may 01, 2020 oil lease name index listing page 1 (olm003) · 4/30/2020 · adams ranch...

MAY 01, 2020 OIL LEASE NAME INDEX LISTING PAGE 1 (OLM003)

DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ REEVES PEARSALL (AUSTIN CHALK) LEEXUS OIL LLC 12813 (S.A.H.) V.H. HRBACEK W. P. HOLLOWAY (BUDA) EXXCEL OPERATING COMPANY 04024 A RANCH UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19110 A. WINANS SOMERSET CALFAS OIL, LLC 10790 A.D.D. CORPORATION MARCELINA CREEK (AUSTIN CHALK) SARITA ENERGY RESOURCES, LTD. 06857 A.D.D. CORPORATION MARCELINA CREEK (BUDA) SARITA ENERGY RESOURCES, LTD. 18305 AARON PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19804 AARON, CHAS. SOMERSET GREAT PLAINS RESOURCES, INC. 11296 ABBOT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17068 ABEL 'A' TOM TOM (GEORGETOWN) DYAD PETROLEUM COMPANY 17304 ACADIA A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19085 ACADIA B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19099 ACADIA C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19086 ACADIA D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19087 ACADIA F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19447 ACADIA G EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19467 ACADIA H EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19479 ACHTERBERG, ANTON LA VERNIA PRODUCTION RESOURCES, INC. 00825 ACKER HAGIST RANCH, NORTH (ARGO 2500) CIMARRON ENGINEERING, LLC 11914 ACLETO CREEK WATERFLOOD UNIT ACLETO CREEK (POTH A) JIMCO ENERGY INC. 09051 ADA HAMMOND HEIRS HAMMOND (SAN MIGUEL NO 4) ARRCO OPERATING, LLC - 14643 ADAM, C. A. ECKERT GINCO OPERATING CO. 00543 ADAMEK UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 17005 ADAMITZ LEMING (2934 SAND) GINCO OPERATING CO. 08789 ADAMITZ, W.A. -C- LEMING (2934 SAND) JB OIL & GAS WELL SERVICE 08872 ADAMITZ, WALLACE L. LEMING (2934 SAND) BRITANCO, L.L.C. 08374 ADAMITZ, WALLACE L. LEMING (2934 SAND) M & C OPERATING, LLC 08737 ADAMS PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 12921 ADAMS 'A' ADAMS (BUDA) ACTIVA RESOURCES, LLC 18508 ADAMS RANCH "D" ADAMS (NAVARRO, UPPER) ACTIVA RESOURCES, LLC 06040 ADAMS 1 DALE-MCBRIDE ARAMIS, LLC 04104 ADAMS 3 BATEMAN (AUSTIN CHALK) ARAMIS, LLC 13549 ADAMS, CLARA SOMERSET U. D. MAN, INC. 02549 ADAMS, FRANKIE CHRISTINE, SE. (WILCOX) THOMAS EXPLORATION & DEVEL., INC 04705 ADAMS, IDA B., ETAL PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03468 ADAMS, SAM DARST CREEK STROUD/BARKER INC. 08347 ADAMSON TURNEY AMERICAN RESOURCES, INC. 18863 ADAMSON 'A' TURNEY PNP OPERATING COMPANY LLC 19060 ADCOCK, ALONZO KAYE (NAVARRO) SOURCE PETROLEUM INC. 01918 ADDISON AVERY BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 15485 ADDISON AVERY RED HAWK (EAGLE FORD) STRAND ENERGY, L.C. 15484 ADELE DUBOSE EAGLEVILLE (EAGLE FORD-1) VERDUN OIL & GAS LLC 15914 ADELE DUBOSE UNIT A EAGLEVILLE (EAGLE FORD-1) VERDUN OIL & GAS LLC 17053 ADELINE BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 13929 ADKINS TAYLOR-INA BLACK MAC OIL, INC. 12302 AERY EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 15836 AGUILAR FAIRFIELD DRACHEN OIL COMPANY 14584 AGUILAR, CIRILDO FAIRFIELD CALK, ROGER D. 07670 AGUIRRE, LEONARDO B. SOMERSET PETROSAURUS, INC. 11207 AHLHORN NAJVAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15973 AHRENS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17791


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ AHRENS, STANLEY E. LA VERNIA DONOCO OIL COMPANY 05851 AK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18125 ALAMO NATL BNK., TRUSTEE JACK FROST (CROCKETT) AMERICAN PATRIOT OPERATING CORP. 03424 ALAMO PRODUCTIONS, INC. FAIRFIELD RLU OPERATING, LLC 18213 ALC RANCH BRISCOE RANCH (EAGLEFORD) TRINITY OPERATING (USG), LLC 18580 ALCORTA, M & B SOMERSET PETROSAURUS, INC. 06609 ALDERMAN RANCH EF CARRIZO SILVERBOW RESOURCES OPER, LLC 15654 ALDRIDGE NURSERY, INC. FAIRFIELD GREAT PLAINS RESOURCES, INC. 09561 ALDRIDGE, R. C. FAIRFIELD GREAT PLAINS RESOURCES, INC. 05468 ALDRIDGE, R.C. -B- FAIRFIELD GINCO OPERATING CO. 06282 ALDRIDGE, ROBBIE MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 10178 ALENE CHARLOTTE (NAVARRO) ROLAND OIL COMPANY 03314 ALEXANDER BATEMAN (AUSTIN CHALK) ALEXANDER ROYALTY COMPANY 07975 ALEXANDER BATEMAN (AUSTIN CHALK) G & A OPERATING COMPANY, LLC 16432 ALEXANDER BUCHANAN OILTEX, LLC 03612 ALEXANDER DALE-MCBRIDE FIELD OPERATING COMPANY, INC. 11819 ALEXANDER DALE-MCBRIDE G & A OPERATING COMPANY, LLC 15903 ALEXANDER DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 13529 ALEXANDER -A- BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 12347 ALEXANDER -A- DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 13661 ALEXANDER -A- FENTRESS (1750) AUSTIN OPERATING, LLC. 09457 ALEXANDER #3 BATEMAN (AUSTIN CHALK) G & A OPERATING COMPANY, LLC 15056 ALEXANDER "B" PLUM CREEK, N. (DALE LIME) HIGHER STANDARD OIL COMPANY,INC. 11349 ALEXANDER A FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 18618 ALEXANDER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17504 ALEXANDER, C. BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 08213 ALEXANDER, C. D. BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 03388 ALEXANDER, E.C. BATEMAN (AUSTIN CHALK) MEB, LLC 13015 ALEXANDER, E.C. BUCHANAN DARST CREEK OIL COMPANY 06386 ALEXANDER, E.C. DALE-MCBRIDE E & W SERVICES, INC. 12055 ALEXANDER, E.C. DALE-MCBRIDE FIELD OPERATING COMPANY, INC. 11701 ALEXANDER, KATHLEEN JONES FLORESVILLE, E. (POTH B 2800) LP OPERATING, LLC 03735 ALEXANDER, W.L. BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 09198 ALEXANDER,C. BATEMAN (AUSTIN CHALK) ALEXANDER ROYALTY COMPANY 17563 ALEXIS PEARSALL (AUSTIN CHALK) HOLLEY OIL COMPANY, LLC 14626 ALFORD EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 16275 ALFORD PEACH CREEK (AUSTIN CHALK) CREATIVE OIL & GAS OPERATING,LLC 06829 ALFORD, ROY MINERVA-ROCKDALE CANON OIL AND GAS 05846 ALI UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17996 ALI-O UNIT PILGRIM (AUSTIN CHALK) PROGAS OPERATING, INC 12224 ALINE WILLIAMS PEARSALL (BUDA LIME) CHEYENNE PETROLEUM COMPANY 17873 ALINE WILLIAMS UNIT A BRISCOE RANCH (EAGLEFORD) CHEYENNE PETROLEUM COMPANY 15831 ALKEK TWO M (GEORGETOWN) ASHTOLA EXPLORATION COMPANY,INC. 12759 ALLALA-GARCIA PEARSALL (AUSTIN CHALK) HILL PRODUCTION COMPANY NO. 2 13158 ALLAR SEIDEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17014 ALLEE PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14888 ALLEE DIM C BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15577 ALLEE UNIT A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15313 ALLEE UNIT B BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15563 ALLEE UNIT D BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15407 ALLEE UNIT E BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15320


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ALLEE-BOWMAN UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14974 ALLEN PANDORA, NW (AUSTIN CHALK) TIZA ENERGY, INC. 12250 ALLEN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15906 ALLEN SALT FLAT B. J. P. OPERATING 02629 ALLEN & TILLER SALT FLAT B. J. P. OPERATING 01525 ALLEN MCM EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 15559 ALLEN MCM EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 19414 ALLEN PAGEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16692 ALLEN TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16691 ALLEN UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17714 ALLEN, ALICE SALT FLAT B. J. P. OPERATING 01449 ALLEN, J. E. -A- LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03671 ALLEN, J. E. -B- LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 02272 ALLEN, J.E. 'A' WILDCAT TEXAS PETROLEUM INVESTMENT CO. 13797 ALLEN, VIRGIL ET AL SALT FLAT CAIN, LESLIE L. 06231 ALLERKAMP PEARSALL (BUDA LIME) BIGFOOT OIL LLC 18345 ALLERKAMP, ERNEST E. PEARSALL (NAVARRO SAND) BIGFOOT OIL LLC 14516 ALLISON, J.P. SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 08140 ALONZO PEELER A UNIT WILDCAT EOG RESOURCES, INC. 17680 ALONZO, CLARENCE MINERVA-ROCKDALE FULLSPIKE ENERGY LLC 02391 ALPHA SWD AUSTIN PIERCE (AUSTIN CHALK) DILWORTH SWD, LLC 16340 ALPHA WARE BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 15792 ALSTON, GEORGE ET AL ACLETO CREEK (POTH B) JIMCO ENERGY INC. 09508 ALTA VISTA UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16946 ALTITO A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16117 ALTITO A 18C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18671 ALTITO A 19A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17848 ALTITO A 19B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17849 ALTITO A 19C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18112 ALTITO A 21B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17850 ALTITO A 22B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17851 ALTITO A 23A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17841 ALTITO A 23B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18672 ALTITO A 25A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19850 ALTITO A 27A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18375 ALTITO A 27B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19672 ALTITO A 2728 ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19684 ALTITO A 28A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19003 ALTITO A 28B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19682 ALTITO A 2819 ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19744 ALTITO A 2827 ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19683 ALTITO A 30A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18362 ALTITO A 30B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18717 ALTITO A-1 EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17859 ALTITO B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16963 ALTITO B 13A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19332 ALTITO B 302C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18150 ALTITO B 302D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18749 ALTITO B 32A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17862 ALTITO B 32B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18339 ALTITO B 6C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19790


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ALTITO B 6D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19755 ALTITO B 7A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18921 ALTITO B 7B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19350 ALTITO B 7C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18770 ALTITO B 7D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17869 ALTITO B 8D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18598 ALTITO C EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16852 ALTITO D EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17797 ALTITO D 17A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18871 ALTITO D 18A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17814 ALTITO D 18B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17790 ALTITO D 302A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17278 ALTSMAN BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 12172 ALTSMAN, CHARLES "B" BATEMAN (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13283 ALVARADO FAIRFIELD GREAT PLAINS RESOURCES, INC. 12228 ALVARADO, J. FAIRFIELD GENIE OIL COMPANY "A" 10496 ALVIN BLALACK 77 PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17951 ALVIN MOCZYGEMBA A EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16682 AMBROSE URBANCZYK EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17287 AMERICAN ENERGY MANN PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 12880 AMERICAN QUARTER 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18523 AMERITEX-ROMA ELAINE PALMERAS (OLMOS) OILTON RESOURCES, INC. 13792 AMG CHATO 25 C SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14927 AMMANN EFS BRISCOE RANCH (EAGLEFORD) ATLAS OPERATING LLC 18374 ANDERSON NIXON SUMMIT ENERGY OPERATING, CO. 14002 ANDERSON PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 15091 ANDERSON PECAN GAP (5050) ARBOL RESOURCES, INC. 19018 ANDERSON 'A' UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18368 ANDERSON 'B' UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18369 ANDERSON UNIT DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 18344 ANDERSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17589 ANDERSON-RAEMAY A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18380 ANDERSON-RAEMAY B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18383 ANDERSON-RAEMAY C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18798 ANDERSON-ROD UNIT DIM BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 18133 ANDERSON-STONE DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15630 ANDERSON-STONE UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17875 ANDERSON, C. (CHEVRON) DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02722 ANDERSON, C. (CHEVRON) DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02775 ANDERSON, C. 1H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14646 ANDERSON, C. 2-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14876 ANDERSON, C.W. STAPLES CALTEX ENERGY CO. 06964 ANDERSON, CERSEY DARST CREEK (BUDA) GARRISON LTD. 02763 ANDERSON, JAMES D. SOMERSET GREAT PLAINS RESOURCES, INC. 10871 ANDERSON, L. DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02756 ANDERSON, L. DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02797 ANDERSON, NILE N. SPILLER AUSTIN OPERATING, LLC. 01677 ANDERSON, TOM DARST CREEK (BUDA) P.S.N. PETROLEUM, INC. 03179 ANGEL -B- MINERVA-ROCKDALE C-D OIL COMPANY, INC. 13595 ANGEL -B- MINERVA-ROCKDALE VICEROY PETROLEUM, LP 14792 ANGEL ARMS STOCKDALE (CARRIZO) WHITEHALL ROYALTY LLC 18681


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ANGELL, J. MINERVA-ROCKDALE C-D OIL COMPANY, INC. 03121 ANGERMILLER, E.L. TAYLOR-INA PETRO LIONS, LLC 09893 ANGUS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18616 ANIKEN PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18241 ANIOL EAGLEVILLE (EAGLE FORD-1) RICKAWAY ENERGY, CORP. 16374 ANNA NIXON IPACT 12305 ANNA LOUISA PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19690 ANNIE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15948 ANNPICK PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17469 ANSCO TRUST ET AL JOURDANTON (RECKLAW) WSM 08578 ANTEATER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18342 ANTHONY EAST UNIT 1 EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16085 ANTHONY FOREST PRODUCTS A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 17056 ANTHONY WEST UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16169 ANTON URBANCZYK EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16461 ANTRIM COOK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18144 AOUDAD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15528 APOLLO 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18572 APPALOOSA 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19253 APPALOOSA 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19233 APPALOOSA 3H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19234 APPALOOSA 4H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19237 APPLE CELLAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17187 APPLING 9A SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14822 APPLING 902 SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14857 APPLING-RABB DUNLAP TEXSTAR OIL & GAS, LLC 00514 APPLING, C. D. SPILLER DELRAY OIL, INC. 01692 APPLING, C. F. DUNLAP B. J. P. OPERATING 00524 APPLING, C. F. DUNLAP SHEFTS & SHEFTS, INC. 00526 APPLING, C. F. /RABB/ DUNLAP K AND R OPERATING 03675 APPLING, C. F. ESTATE DUNLAP K AND R OPERATING 02028 APPLING, C. O., ESTATE SPILLER QUEST EMG, INC. 01680 APPLING, CARL W. DARST CREEK (BUDA) GAUGE OIL COMPANY 02755 APPLING, COLLIE DUNLAP KIDD PRODUCTION CO. 02150 APPLING, COLLIE B. DUNLAP SHEFTS & SHEFTS, INC. 03802 APPLING, GUS SPILLER PRONTO SERVICES 01690 APPLING, HESTER DUNLAP COLBY PRODUCTION RESOURCES, LLC 03803 APPLING, ROSS DUNLAP SHEFTS & SHEFTS, INC. 03804 APPLING, W. A. SPILLER EAGLE FORD OIL CO., INC. 01694 APPLING, W. A. SPILLER GINCO OPERATING CO. 01667 APPLING, W.A. -A- SPILLER TRI-W OIL 05356 APPLING, WILLIE DUNLAP AUSTIN OPERATING, LLC. 03703 APPLING, WILLIE, -B- DUNLAP AUSTIN OPERATING, LLC. 03891 APRICOT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18908 ARABIAN 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18627 ARABIAN 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18628 ARAIZA, KEVIN S. FIRST SHOT (AUSTIN CHALK) WOOLDRIDGE OIL & GAS 12885 ARC-LARK JACOB BULL OIL COMPANY, LLC 15011 ARCHES A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19935 ARCHES B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19903 ARCHES C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19899


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ARCHES D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19904 ARENA ROJA DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16100 ARENA ROJA HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19169 ARENA ROJA HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19170 ARENA ROJA HC3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19182 ARENA ROJA HC4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19171 ARENA ROJA HC5 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19162 ARENA ROJA UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16139 ARLEDGE RANCH UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16362 ARMINIUS ENERGY TRUST BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15274 ARMINIUS ENERGY TRUST INDIO TANKS (PEARSALL) VENADO OPERATING COMPANY LLC 17386 ARMSTRONG SOMERSET PETROSAURUS, INC. 11150 ARMSTRONG HORIZONTAL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18812 ARMSTRONG UNIT FAIRFIELD PETRO LIONS, LLC 06358 ARMSTRONG/KLEMCKE UNIT SOMERSET CALK OIL COMPANY 07624 ARMSTRONG, ARTHUR JR. SOMERSET GINCO OPERATING CO. 07945 ARNOLD PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04743 ARNOLD & ZAESKE UNIT SUTIL (BUDA) BLOEMER OIL AND GAS 05932 ARNOLD -A- PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04793 ARNOLD A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15942 ARNOLD AB ALLOC E EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19745 ARNOLD AB ALLOC F EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19753 ARNOLD AB ALLOC G EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19746 ARNOLD AB ALLOC H EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19748 ARNOLD AB ALLOC I EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19749 ARNOLD AB ALLOCATION A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18931 ARNOLD AB ALLOCATION B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18930 ARNOLD AB ALLOCATION C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18949 ARNOLD AB ALLOCATION D EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18932 ARNOLD B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15943 ARNOLD C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16243 ARNOLD C-D ALLOC B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19750 ARNOLD C-D ALLOC C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19751 ARNOLD C-D ALLOC. A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19747 ARNOLD D UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16303 ARROW HEAD SALT FLAT MEB, LLC 14771 ARROW-HILDEBRAND #4 PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 13724 ARROYO ROBLE LEONA (ELAINE) GENESIS ST OPERATING LLC 15324 ARTHUR UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16722 ARZ UNIT G DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16144 ASH, LOUISE KENS (SERPENTINE) R & S OIL PRODUCTION CO. 10351 ASHER MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 08953 ASHERTON BRISCOE RANCH (EAGLEFORD) LONESTAR OPERATING, LLC 19509 ASHERTON NORTH UNIT BRISCOE RANCH (EAGLEFORD) LONESTAR OPERATING, LLC 17037 ASHERTON SOUTH UNIT BRISCOE RANCH (EAGLEFORD) LONESTAR OPERATING, LLC 17038 ASHERTON SWD BRISCOE RANCH (EAGLEFORD) PRODUCED WATER TRANSFER1 LLC 18593 ASHERTON SWD J.F.S. SW(OLMOS 4120) PRODUCED WATER TRANSFER1 LLC 18704 ASHERTON UNIT A BRISCOE RANCH (EAGLEFORD) PROTEGE ENERGY III LLC 17161 ASHERTON W BRISCOE RANCH (EAGLEFORD) LONESTAR OPERATING, LLC 19510 ASHLEY, CHARLES MILANO (PECAN GAP) PEMBERTON, W. C. OIL CO., INC. 06457 ASSEMBLY OF GOD CHURCH UNIT SALT FLAT KIDD PRODUCTION CO. 03062


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ASTRO, GARCIA PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 06518 ASTROS A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19862 ASTROS B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19855 ASTROS C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19856 ASTROS D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19863 ATASCOSA SWD FASHING (EDWARDS LIME -B-) MILESTONE ENVIRO SERVICES, LLC 17047 ATASCOSA SWD JOURDANTON NGL WATERSOLUTIONS EAGLEFORD,LLC 17180 ATASCOSA 601 UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 15863 ATKINSON, ELLEN LOMA ALTA CARBURANTE EXPLORATION CO, LTD. 00970 ATKINSON, J. W. LOMA ALTA CARBURANTE EXPLORATION CO, LTD. 00971 ATKINSON, J.W. LOMA ALTA (WILCOX) CARBURANTE EXPLORATION CO, LTD. 13754 ATKINSON, J.W. -C- LOMA ALTA (WILCOX) CARBURANTE EXPLORATION CO, LTD. 00972 ATLANTIC A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19810 ATWOOD WILDCAT WOODHAM OIL CORPORATION 12119 ATWOOD, KIRBY JEANIE (SERPENTINE) ATLAS OPERATING LLC 05291 AUBIN, C.T. PALMER (CARRIZO) SULO OIL COMPANY 05653 AUSTIN EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15461 AUSTIN, A. W. FAIRFIELD OVERSTREET, JAMIE L 09654 AVANT -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10965 AVANT -B- SOMERSET GREAT PLAINS RESOURCES, INC. 10966 AVANT -C- SOMERSET GREAT PLAINS RESOURCES, INC. 10967 AVANT -D- SOMERSET GREAT PLAINS RESOURCES, INC. 10968 AVANT -E- SOMERSET GREAT PLAINS RESOURCES, INC. 11307 AVANT -F- SOMERSET GREAT PLAINS RESOURCES, INC. 11156 AVANT NORTH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17140 AVANT NORTH UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18960 AVANT NORTH UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17158 AVANT-MASSEY PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12609 AVANT-MASSEY "A" PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12658 AVANT, J.R. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 12275 AVOCADO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18959 AXIS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15723 AXIS UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18961 AYALA, ARTURO PEARSALL (AUSTIN CHALK) CHIODO CORP. 07426 AYERS LA VERNIA LAMBECK PETROLEUM, LLC 11798 AZTEC BETTY A TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 17182 AZTEC GE TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 17202 AZTEC HAASS TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 19784 AZTEC MOEBIUS TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 17378 AZTEC OSCAR C TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 17137 AZTEC OSCAR D TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 17222 AZTEC WILSON 'P' UNIT 2 TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 16536 AZTEC WILSON K TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 18819 AZTEC WILSON P TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 16279 AZTEC-SCHMIDT S TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 15590 AZTEC-SCHWEERS TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 15358 AZTEC-WILSON A TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 15683 AZTEC-WOODS ADAMS (BUDA) TEXAS SECONDARY OIL CORPORATION 15519 B.J. TOWNES UNIT LYTTON SPRINGS ROYAL TEXAS PETROLEUM 14362 B&B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15464 BABAN MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 16350


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BADGER UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18353 BAENZIGER-ADCOCK UNIT NIXON ALCOR ENERGY, INC. 12438 BAGBY, J.H. PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 12490 BAGGETT BIG WELLS (SAN MIGUEL) RILEY EXPLORATION, LLC 04594 BAGGETT, J. B. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 12580 BAGGETT, JEFF PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 05414 BAGGETT, JOHN B EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15486 BAGGETT, JOHN B. BIG WELLS (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 04280 BAGGETT, JOHN B. -A- PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 05177 BAGGETT, JOHN B. -B- PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 05623 BAILEY-ADAMS LULING-BRANYON AUSTIN OPERATING, LLC. 06189 BAILEY, E.N. SOMERSET PETROSAURUS, INC. 10833 BAILEY, EVERETT N. SOMERSET PETROSAURUS, INC. 10832 BAILEY, J.M. -A- SOMERSET RAINER ENERGY, INC. 10753 BAILEY, J.M. -B- SOMERSET STOKES, O. K. 10754 BAILEY, JAMES TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01718 BAILEY, JAMES & REGINA TAYLOR-INA CVS PRODUCTION, LLC. 07061 BAILEY, JAMES JR. TAYLOR-INA TAMPKE SERVICE CO. 09770 BAILEY, JAMES M. SOMERSET PETROSAURUS, INC. 11208 BAILEY, JOHN E. FAIRFIELD GREAT PLAINS RESOURCES, INC. 06221 BAIN PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 15977 BAIN PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05550 BAIN, F. L. PANDORA, NW (AUSTIN CHALK) SR OIL AND GAS, L.L.C. 11788 BAIN, FRANK L. REDING (POTH -B-) JIMCO ENERGY INC. 03527 BAIN, J.H. EAGLEVILLE (EAGLE FORD-1) ORIGIN PRODUCTION GROUP LLC 18830 BAIN, J.H. NIXON ORIGIN PRODUCTION GROUP LLC 12312 BAIN, J.H. NIXON (BUDA) ORIGIN PRODUCTION GROUP LLC 14082 BAIN, J.H. JR. PRESSLY-CAPT (POTH B) PRESSLY OIL INTEREST, INC. 11868 BAIN, T. W. BIG FOOT MAVERICK ENERGY GROUP, INC. 00082 BAIN, TRAVIS W. BIG FOOT 100 C & H OIL AND GAS, LLC 00044 BAIRD HEIRS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16258 BAIRS SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 07769 BAKER WILDCAT WESTERN ENERGY GROUP, LLC 14723 BAKER NIXON AP TEXAS ENERGY, INC. 13955 BAKER SOMERSET EVERETT OIL, INC. 11442 BAKER -C- SOMERSET EVERETT OIL, INC. 11745 BAKER -C- SOMERSET JB OIL & GAS WELL SERVICE 12181 BAKER "A" DUNLAP GREAT PLAINS RESOURCES, INC. 03847 BAKER "8" LIZARD CREEK (PETTUS) WAGNER OIL COMPANY 13940 BAKER DEFOREST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16046 BAKER NO. 2 SOMERSET JB OIL & GAS WELL SERVICE 12191 BAKER TRACT -A- SOMERSET GREAT PLAINS RESOURCES, INC. 11908 BAKER TRACT -B- SOMERSET GREAT PLAINS RESOURCES, INC. 12045 BAKER, A. J. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01055 BAKER, C. S. NIXON SUMMIT ENERGY OPERATING, CO. 11762 BAKER, CHARLES BIG FOOT MAVERICK ENERGY GROUP, INC. 00083 BAKER, D. D. DARST CREEK (BUDA) GARRISON LTD. 02735 BAKER, E.M. SOMERSET GASSCO PETROLEUM CORPORATION 11642 BAKER, E.M. -B- SOMERSET PETRO-TEX ENERGY & EXPL.CO.,INC. 12111 BAKER, E.M. "A" SOMERSET PAISANO PRODUCTION, INC. 11899 BAKER, FRANCIS LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 07970


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BAKER, LACY PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 05308 BAKER, TOM H., -C- DUNLAP GREAT PLAINS RESOURCES, INC. 03903 BALCH, M. W. MINERVA-ROCKDALE NORTH TEXAS ENERGY,INC. 08171 BALL, H. A. FAIRFIELD CRYSTAL RESOURCES, INC 02535 BALL, J. J. IMOGENE, S. (CARRIZO) BAY ROCK OPERATING COMPANY 00694 BALL, JAMES LA VERNIA THREE J ENERGY, INC. 00842 BALL, SAM LA VERNIA BRAC OIL 00837 BALLARD -B- DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 11734 BALLARD "B" DALE-MCBRIDE DELANEY OIL AND GAS COMPANY 13814 BALLARD, DON DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 12038 BALLARD, LURLINE DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 12063 BALSER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17646 BANANA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18721 BANDERA ALKEK TWO M (GEORGETOWN) ESPADA OPERATING LLC 14411 BANDERA-ALKEK M.F. JAKE LAWLESS (EDWARDS LIME) ESPADA OPERATING LLC 15212 BANDY LULING-BRANYON OILTEX, LLC 10044 BANDY "A" SPILLER BAIR'S LEASE SERVICE, INC. 06060 BANDY "B" SPILLER BAIR'S LEASE SERVICE, INC. 06322 BANDY, L. R. SPILLER DELRAY OIL, INC. 01670 BANKHEAD EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 15499 BANKHEAD-HOLMES EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 15531 BANRICH BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 18815 BAPTIST CEMETERY SOMERSET JAMCO OIL 02916 BAPTIST FOUNDATION EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16858 BAR INVERTED T UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15567 BAR NONE EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15594 BAR NONE MARCELINA CREEK (AUSTIN CHALK) RECOIL RESOURCES OPERATING, INC. 18728 BAR NONE C EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16754 BAR NONE E EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16172 BAR NONE F EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16095 BARBARA B B B (OLMOS A) DIMMIT COUNTY SWD, LLC 18564 BARBER, S. L. LOVELL DALE-MCBRIDE CALISTOGA ENERGY RESERVES, LLC 04111 BARCLAY CHITTIM (GEORGETOWN) TXCO RESOURCES INC. 09144 BARGER RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16648 BARGFREDE, W. LA VERNIA TEXAS COASTAL RESOURCES LLC 00860 BARING EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16696 BARKER SOMERSET GREAT PLAINS RESOURCES, INC. 11154 BARKER -B- SOMERSET TRANSAMERICA ENERGY CORP. 10971 BARKER -S- SOMERSET GREAT PLAINS RESOURCES, INC. 10942 BARKER, PERRY SOMERSET GREAT PLAINS RESOURCES, INC. 07335 BARKLEY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17060 BARLITE, INC. FAIRFIELD DRACHEN OIL COMPANY 09690 BARNES WILDCAT BLACK JACK SERVICES, L.L.C. 13757 BARNES, P.H. SOMERSET UNDERBRINK OIL 07543 BARNES, W.J. MARCELINA CREEK (BUDA) PONTIAC OIL, INC. 12958 BARNETT, W.L. ET AL PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 13405 BARNHART (EF) EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15397 BARNHART (EF) A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16380 BARNHART (EF) B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17065 BARNHART (EF) C EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16599 BARNHART (EF) D EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17171


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BARNHART (EF) E EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17165 BARNHART (EF) G EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17334 BARNHART (EF) H EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16813 BARNHART (EF) J EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17483 BARNHART (EF) K EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17273 BARNHART (EF) L EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17333 BARNHART "A" FIRST SHOT (AUSTIN CHALK) BARNHART CO. 13092 BARNHART NORTH WILDCAT MARATHON OIL EF LLC 19335 BARNHART NORTH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16007 BARNHART UNIT C EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16248 BARR, M.B. CHICON LAKE M B OIL 07683 BARRE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17308 BARRERA, CARLOS M. CHICON LAKE 3B RANCH 07206 BARRETT UNIT PEARSALL (AUSTIN CHALK) SEDCO RESOURCES INC 12779 BARRIER PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18710 BARRY -C- FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 07249 BARTA PILGRIM (AUSTIN CHALK) BYRD OPERATING COMPANY 11834 BARTLETT BATESVILLE (BRACERO) WILLIAMSON OPERATING CO. 04270 BARTLETT TRUST -A- BATESVILLE, SW. (SAN MIGUEL) GOLDEN CHILD, INC. 04797 BARTLETT, CINDY GALBA (BARTOSH) ATASCOSA EXPLORATION, LLC 14903 BARTLETT, D.J. SOMERSET PETROSAURUS, INC. 10901 BARTLING, H. F. LARREMORE CENTEX PIPE & EQUIPMENT, INC. 00809 BASHAM EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 15374 BASIN LEONA PEARSALL (AUSTIN CHALK) QUATRO OIL AND GAS, INC. 12482 BASIN-LORI PEARSALL (AUSTIN CHALK) QUATRO OIL AND GAS, INC. 12476 BASIN-SCOTTY PEARSALL (AUSTIN CHALK) BASIN RESOURCES CORPORATION 12618 BASIN-VEARL SNEED PEARSALL (AUSTIN CHALK) QUATRO OIL AND GAS, INC. 12574 BASKIN, A.H. ET AL MINERVA-ROCKDALE RUBAC TECHNICAL SERVICES 06687 BASSETT UNIT DUNLAP OFFSPRING WELL SALVAGE 07882 BASSI-ALLISON SALT FLAT BAIR'S LEASE SERVICE, INC. 09664 BASSI-BOHANAN SALT FLAT EAGLE FORD OIL CO., INC. 07433 BASSI-ERIN SALT FLAT EAGLE FORD OIL CO., INC. 06491 BASSI-GARRETT SALT FLAT EAGLE FORD OIL CO., INC. 07122 BASSI-KILGORE SALT FLAT BAIR'S LEASE SERVICE, INC. 08371 BASSI-MAXWELL SALT FLAT EAGLE FORD OIL CO., INC. 07245 BASSI, AL. SALT FLAT BAIR'S LEASE SERVICE, INC. 07290 BATEMAN (AUSTIN CHALK) UNIT BATEMAN (AUSTIN CHALK) MAGNUM OILFIELD SERVICES LLC 08490 BATEMAN NAUERT BATEMAN (AUSTIN CHALK) ARMADA RESOURCES CORPORATION 19024 BATEMAN SEIDEL BATEMAN (AUSTIN CHALK) ARMADA RESOURCES CORPORATION 19026 BATEMAN VOIGT BATEMAN (AUSTIN CHALK) ARMADA RESOURCES CORPORATION 19025 BATES -B- MINERVA-ROCKDALE CHISHOLM OIL INVESTMENTS 09283 BATES, HUBERT L. FLORESVILLE, S. (AUSTIN CHALK) DOMINION PRODUCTION COMPANY, LLC 10110 BATES, R. M. MINERVA-ROCKDALE NAVARRO EXPLORATION CO., INC. 06124 BATESVILLE FARMING CO JUDGE MILLS (ANACACHO) OILTON RESOURCES, INC. 07550 BATTE PEMBERTON (NAVARRO) RIMROCK PETROLEUM, INC. 07500 BATTE-HICKMAN WILDCAT COLBY OF NEVADA, INC. 12634 BATTE-HICKMAN MILANO (EAGLEFORD) CXL ENERGY LLC 19295 BATTE-HICKMAN W.C. FINCH (SIMSBORO 1900) CXL ENERGY LLC 19538 BATTE, MARY BELLE MINERVA-ROCKDALE CHISHOLM OIL INVESTMENTS 03190 BATTE, R.L. MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 09384 BATY SWD PEARSALL (AUSTIN CHALK) CINCO OPERATING COMPANY, LLC 18065


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BATY-HEITZ UNIT PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 18053 BAUER LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16078 BAUER, FRITZ MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01190 BAUERLE UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19189 BAYLOR MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 16376 BAYOU ROUGE UNIT A ZAV BRISCOE RANCH (EAGLEFORD) L & J EXPLORATION, LLC 16132 BAYOU ROUGE UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15611 BAYOU ROUGE UNIT C ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15629 BAYOU ROUGE UNIT G ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16907 BAYOU ROUGE UNIT I ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16894 BB UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17292 BBOG BURNS PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 18955 BEALE, BOB ET UX PEACH CREEK (AUSTIN CHALK) ATLAS FUEL SUPPLY, LTD. 13241 BEALL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17307 BEAR CLAUSE ALLOC A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19501 BEAR CLAUSE ALLOC B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19502 BEAR CLAUSE ALLOC C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19524 BEAR CLAUSE ALLOC D EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19505 BEAR CLAUSE ALLOC E EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19506 BEAR CLAUSE RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17052 BEAR CLAUSE RANCH B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18497 BEAR CLAUSE RANCH NORTH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18106 BEAR CLAUSE RANCH SOUTH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15337 BEARD CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 04077 BEARD M-E (T-535) CHEROKEE (NAVARRO) VICEROY PETROLEUM, LP 14363 BEARD, HENRY B. A.W.P. (OLMOS) TREK RESOURCES, INC. 10451 BEARD, L. ET AL CHEROKEE (NAVARRO) TEN-KEY INC. 04128 BEATY, C. H. LYTTON SPRINGS GAUGE OIL COMPANY 01162 BEATY, C. H., ETAL LYTTON SPRINGS GAUGE OIL COMPANY 01155 BEATY, CLYDE LYTTON SPRINGS GAUGE OIL COMPANY 03695 BEATY, CLYDE H. LYTTON SPRINGS ROSE ET AL OIL CO., INC. 01163 BEAUMAR DARST CREEK (BUDA) PRODUCTION RESOURCES, INC. 18920 BECK UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 15693 BECK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17129 BECK, K. L. ECKERT BRIGHT HAWK OPERATING COMPANY 14242 BECK, K. L. ECKERT GINCO OPERATING CO. 00541 BECKMAN, M. A. TWO FINGERS, S. (WILCOX 5550) VIRTEX OPERATING COMPANY, INC. 14434 BEDFORD PHOENIX TDS CARROL SOUTHRIDGE OPERATING COMPANY 14992 BEELER EAGLEVILLE (EAGLE FORD-1) CONTANGO RESOURCES, INC. 16363 BEELER PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 19681 BEELER PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 17577 BEELER RANCH PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19362 BEELER UNIT A PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 18698 BEELER UNIT C PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 18794 BEELER UNIT D PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 18801 BEELER UNIT E PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 18786 BEELER UNIT F PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 18777 BEELER UNIT H PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 18784 BEELER, R. F. PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05236 BEELER, R. F. "A" PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05654 BEELER, R. F. "C" PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 13184


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BEEVER PEARSALL (AUSTIN CHALK) LEMON, RICHARD G. 06708 BEEVER PEARSALL (AUSTIN CHALK) OMBER PETROLEUM & ENERGY CORP. 04678 BEEVER FARMS INC C DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 17932 BEEVER/LITTLE PEARSALL (AUSTIN CHALK) TEXAN PRODUCTION COMPANY, INC. 08218 BEHLEN-STEPHENS 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17244 BEHLEN-TALLEY 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17233 BEHRENS, CHARLES LA VERNIA DOEGE, DONALD 05878 BEHRENS, CHARLES LA VERNIA (AUSTIN CHALK) STEBAR ENERGY CORPORATION 08875 BEK UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16379 BEL UNIT FAIRFIELD PARK AVENUE RESOURCES, INC. 06370 BELL SALT FLAT, WEST E. T. OIL COMPANY 06676 BELL UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16307 BELL UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16146 BELL, EDDIE SOMERSET CALK OIL COMPANY 10909 BELL, RUFUS D. KAYE (NAVARRO) THREE J ENERGY, INC. 02324 BELLOWS WILDCAT LOIN ENERGY CORPORATION 14720 BELLOWS COOKE, WEST (OLMOS) BEACHTEX OIL COMPANY, LLC 14865 BELT, W.A. -III- PECAN GAP (5050) BELMAR OIL & GAS, INC. 10198 BELT, W.A. III MILBUR (NAVARRO) BELMAR OIL & GAS, INC. 10397 BELTRAN UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18582 BENAVIDES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18114 BENDELE EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 17988 BENDELE, A. H. TAYLOR-INA OILEX INT'L INVESTMENTS, INC. 03439 BENDELE, HELEN, ETAL TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01720 BENDELE, HENRY TAYLOR-INA AMELIA EXPLORATION LLC 03602 BENDELE, W. A. TAYLOR-INA CARDINAL ENERGY COMPANY 03617 BENDER MINERVA-ROCKDALE RWA, LLC 16357 BENGSTON, AUGUSTA, EST. NEW SWEDEN ELECTRAGAS, INC. 01285 BENHAM, C. G., FEE SALT FLAT SHEFTS & SHEFTS, INC. 03027 BENKE BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18048 BENKE, JOHN PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12592 BENNER, HERBERT SALT FLAT KIDD PRODUCTION CO. 02918 BENNETT PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 12714 BENNETT PEARSALL (AUSTIN CHALK) LONE STAR OPERATING COMPANY 13190 BENNETT PEARSALL (AUSTIN CHALK) TEKNA SYNERGY CORPORATION 13753 BENNETT SOMERSET PETROSAURUS, INC. 10974 BENNETT BROS -A- PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12534 BENNETT BROS. PEARSALL (AUSTIN CHALK) LONE STAR OPERATING COMPANY 12873 BENNETT BROS. PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12768 BENNETT BROS. -B- PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12535 BENNETT-MORALES UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 04820 BENNETT-SHINER UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14474 BENSON SOMERSET MORE TEXAS OIL 12042 BENSON MINERALS SOMERSET UNDERBRINK OIL 10750 BERDOLL PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 12944 BERDOLL DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16620 BERDOLL UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16456 BERGEY-BOENING UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15704 BERMUDA PEARSALL (AUSTIN CHALK) AMPAK OIL COMPANY 13043 BERMUDA PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15176 BERRY EZZELL ORCA OPERATING COMPANY, LLC 17678


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BERRY PEARSALL (BUDA, S.) D90 ENERGY, LLC 18294 BERRY FAMILY RANCHES BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15408 BERRY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18323 BERRY-HOUSE FAIRFIELD OILEX INT'L INVESTMENTS, INC. 07570 BERRY-LEHMAN "A" PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12208 BERRY, J.H. PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12495 BERRY, JOE PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 06512 BERTA UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16850 BERYL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15515 BETA SWD AUSTIN PIERCE (AUSTIN CHALK) AGUA LIBRE MIDSTREAM LLC 17138 BETCHAN MINERVA-ROCKDALE S&JB, LLC 10597 BETCO-AVANT UNIT PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13801 BETHARD, B.E. MINERVA-ROCKDALE BABCO OIL & GAS, LLC 11500 BETTY BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 12135 BETTY BULLOH (NAVARRO) VICEROY PETROLEUM, LP 17258 BETTY PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15235 BETTY SUE BIRD A FRODEIN (GEORGETOWN) ORIGIN PRODUCTION COMPANY, INC. 13049 BETTY SUE BIRD B ACLETO CREEK (POTH B) ORIGIN PRODUCTION COMPANY, INC. 07251 BETTY SUE BIRD C ACLETO CREEK (POTH C) ORIGIN PRODUCTION COMPANY, INC. 08667 BETTY WILSON BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15288 BH UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 19319 BIEDIGER CHICON LAKE RLU OPERATING, LLC 18276 BIEDIGER, FERDINAND BIG FOOT OILEX INT'L INVESTMENTS, INC. 14074 BIESENBACH FAIRFIELD SIMCO OIL, LLC 10708 BIG EYE UNIT WILDCAT TREADSTONE ENERGY PRTNR OP, LLC 14328 BIG FOOT OLMOS -B- UNIT BIG FOOT U.S. JIMOIL CORPORATION 04023 BIG FOOT OLMOS B SAND UNIT BIG FOOT MAVERICK ENERGY GROUP, INC. 03380 BIG FOOT OLMOS D SAND UNIT BIG FOOT (OLMOS D-3 SAND) MAVERICK ENERGY GROUP, INC. 14988 BIG KAHUNA UNIT PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13942 BIG SNAKE WIPFF WIPFF (GEORGETOWN 2000) FLINT INTERESTS, LLC 04049 BIG SONNY PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 18625 BIG WELLS /SAN MIGUEL/ UNIT BIG WELLS (SAN MIGUEL) TRINITY OPERATING (USG), LLC 04421 BIG WELLS LO. SAN MIGUEL UNIT BIG WELLS(SAN MIGUEL, LO., EAST) TRINITY OPERATING (USG), LLC 04208 BIG WELLS SOUTH A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18274 BIG WELLS SOUTH DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15593 BIG WELLS SOUTH HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19649 BIG WELLS SOUTH HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19648 BIG WELLS SOUTH HC3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19647 BIG WELLS SOUTH UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18263 BIG WELLS SOUTH UNIT 10 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19671 BIG WELLS SOUTH UNIT 11 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18742 BIG WELLS SOUTH UNIT 12 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18746 BIG WELLS SOUTH UNIT 13 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18745 BIG WELLS SOUTH UNIT 14 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18883 BIG WELLS SOUTH UNIT 15 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18884 BIG WELLS SOUTH UNIT 16 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18894 BIG WELLS SOUTH UNIT 17 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18879 BIG WELLS SOUTH UNIT 2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18255 BIG WELLS SOUTH UNIT 3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18880 BIG WELLS SOUTH UNIT 4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18881 BIG WELLS SOUTH UNIT 6 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19572


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BIG WELLS SOUTH UNIT 7 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19567 BIG WELLS SOUTH UNIT 8 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19604 BIG WELLS UNIT PEARSALL (AUSTIN CHALK) KILLAM OIL CO., LTD. 16019 BIGFOOT BIG FOOT (GEORGETOWN) LP OPERATING, LLC 19940 BIGGS, A.F. SALT FLAT, WEST CENTEX PIPE & EQUIPMENT, INC. 06913 BIGGS, A.W. SALT FLAT TXLA ENERGY, INC. 08320 BIGHORN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18275 BIGHORN UNIT INDIO TANKS (PEARSALL) EOG RESOURCES, INC. 17117 BILBO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18350 BILL WILSON ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16843 BILLIE ANN SERBIN (WILCOX) SHELDON RESOURCES, L.P. 11931 BILLINGS FIRST SHOT (AUSTIN CHALK) CLARON CORPORATION 13592 BILLINGS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16971 BILLINGS, A. A.W.P. (OLMOS) XTO ENERGY INC. 09278 BILLY HINDES-NORTH UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 17566 BILLY HINDES-SOUTH UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16923 BILSKY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15720 BILSKY-BRISTOL UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15858 BILSKY-BROWN UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15845 BIRD-KING-HALL UNIT STOCKDALE, N. (CHALK, UPPER) ALCOR ENERGY, INC. 13921 BIRD-LORENZ ACLETO CREEK (POTH B) PACE OIL AND GAS COMPANY 09066 BIRD-LORENZ UNIT NIXON ALCOR ENERGY, INC. 14210 BIRD-LORENZ UNIT PANDORA, NW (AUSTIN CHALK) DULA PRODUCTION, LLC 12090 BIRDWELL UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18752 BIRY TRACT II TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 04541 BIRY TRSCT III TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 10207 BIRY, ALFRED TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06119 BIRY, FRANK TAYLOR-INA FUEGO ENERGY, LLC 06405 BIRY, FRANK -A- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06585 BIRY, FRANK -H- TAYLOR-INA NAILS OPERATING COMPANY LLC 04508 BIRY, FRANK B TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05751 BIRY, FRANK C. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05752 BISON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17151 BLACK, OSCAR MINERVA-ROCKDALE PRICE OPERATING, LLC 02401 BLACK, R.L. LA VERNIA PRODUCTION RESOURCES, INC. 06020 BLACKBERRY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19198 BLACKBUCK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15724 BLACKBURN WILDCAT RHD HOLDINGS, L.L.C. 14044 BLACKBURN-TRAMMELL MILBUR, N. (WILCOX 2660) VICEROY PETROLEUM, LP 03836 BLACKBURN, CLIFF MILBUR, N. (WILCOX 2660) CXL ENERGY LLC 09437 BLACKMAR, JIM FEE DUNLAP EAGLE FORD OIL CO., INC. 07688 BLACKMON PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18651 BLACKMON UNIT BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15582 BLACKSTONE EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 16970 BLACKWELL, JOE E. -A- LULING-BRANYON GINCO OPERATING CO. 01112 BLACKWELL, RAYMOND LULING-BRANYON LTX OIL COMPANY, L.L.C. 01111 BLACKWELL, S. M. LULING (EDWARDS) SOTOL ENERGY, INC. 02477 BLACKWELL, S. M. LULING-BRANYON SOTOL ENERGY, INC. 04847 BLACKWELL, S.M. -B- LULING-BRANYON SOTOL ENERGY, INC. 08489 BLAHA UNIT EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 18925 BLAHA-DILWORTH (SA) EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 17960


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BLAHA-DILWORTH (SA-2) EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 17961 BLAIN NIXON EVERGREEN OPERATING CO., LTD. 09035 BLAKE, JAMES V., JR., ET AL FLORESVILLE, EAST CHANDLER, RANDALL 03609 BLAKELY, AGNES MILANO (PECAN GAP) CXL ENERGY LLC 14576 BLAKEWAY 1 C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18980 BLAKEWAY HC1 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19307 BLAKEWAY HC2 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19293 BLAKEWAY HC4 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19266 BLAKEWAY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15387 BLAKEWAY UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15739 BLAKEWAY UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16246 BLAKEWAY UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16455 BLAKEWAY UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16128 BLAKEWAY UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16412 BLAKEWAY UNIT H DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16655 BLAKEWAY UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16468 BLAKEWAY 1 D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19006 BLAKEWAY 2 D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19007 BLAKEWAY 3 D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19017 BLAKEWAY 4 A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18988 BLAKEWAY, ALBERTA BLAKEWAY (DIXON SAND) TDW EXPLORATION, LLC 07993 BLALACK, ALVAN W. JR. "A" PEARSALL (AUSTIN CHALK) BOBCAT OPERATING 05199 BLALACK, ALVIN W. JR. "B" PEARSALL (AUSTIN CHALK) BOBCAT OPERATING 12845 BLANCHE M. WALL ET AL MILANO (PECAN GAP) CXL ENERGY LLC 14469 BLANCO UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18601 BLAND, S.C. MINERVA-ROCKDALE BLAND, S.C. 06647 BLANTON, M. W. FAIRFIELD DIAMOND TRADING & PIPELINE CORP 02311 BLAS-REYES PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18617 BLESBOK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17726 BLM A.W.P. (OLMOS) XTO ENERGY INC. 13952 BLOCH, ERICH LA VERNIA PERKINS, EUGENE O. 05988 BLOCK #19 UNIT #1 SALT FLAT BUBBA LYNN CRUDE 02967 BLOCK #22-ALEX #1 SALT FLAT W.W. ENERGY 03067 BLOCK #33-WATKINS #1 SALT FLAT W.W. ENERGY 03088 BLOCK #34-LEARY #1 SALT FLAT W.W. ENERGY 03054 BLOCK #35 SALT FLAT W.W. ENERGY 03141 BLOCK #36 SALT FLAT W.W. ENERGY 03048 BLOCK #38 SALT FLAT W.W. ENERGY 03155 BLOCK #56 SALT FLAT SHEFTS & SHEFTS, INC. 03124 BLOCK A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18665 BLOCK 37-UNIT #1 SALT FLAT W.W. ENERGY 03116 BLOCK 39 SALT FLAT SHEFTS & SHEFTS, INC. 11547 BLOCK 69 SALT FLAT SHEFTS & SHEFTS, INC. 11410 BLOCK 75 UNIT SALT FLAT SHEFTS & SHEFTS, INC. 07867 BLOCK 76 SALT FLAT SHEFTS & SHEFTS, INC. 10093 BLOCK 88 SALT FLAT SHEFTS & SHEFTS, INC. 11674 BLOCK, ERIC LA VERNIA PERKINS, EUGENE O. 00821 BLOCK, ERICH LA VERNIA SOURCE PETROLEUM INC. 00929 BLT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16449 BLT UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16315 BLUDAU EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17061


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BLUE EYES UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS OPERATING LLC 17391 BLUE STAR 604 SANER RANCH (SAN MIGUEL) BLUE STAR OPERATING COMPANY 14873 BLUE STAR-LIBERTY 35 SACATOSA (GEORGETOWN) SHELL WESTERN E&P 15078 BLUEJACK 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19264 BLUEJACK 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19235 BLUMBERG FIRST SHOT (AUSTIN CHALK) COX & COX PRODUCTION CO. 13675 BLUMBERG NIXON DARTEX ENERGY CORPORATION 12448 BLUMBERG ZION HILL (AUSTIN CHALK) LIVELY EXPLORATION COMPANY 17277 BMW, LTD GIDDINGS (AUSTIN CHALK-1) FIRST ROCK, INC. 07453 BNB PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 15090 BOB HINDES EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 16313 BOB ROTH UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16649 BOBBITT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16674 BOBBITT UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16918 BOBBITT UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16920 BOBCAT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 18643 BOBCAT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17441 BOCANEGRA MINERVA-ROCKDALE RED OAK OIL COMPANY, LLC 18828 BODINE - JOSLIN DUNLAP B. J. P. OPERATING 03813 BOEDEKER LEASE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16089 BOENIG, R. L. FAIRFIELD PETRO LIONS, LLC 15868 BOENIG, R.L. FAIRFIELD PARK AVENUE RESOURCES, INC. 04557 BOENING MARCELINA CREEK (BUDA) FIRST ROCK, INC. 17896 BOENING BROS. DAIRY SUTIL (REEF) FIRST ROCK, INC. 08438 BOENING UNIT MARCELINA CREEK (AUSTIN CHALK) RECOIL RESOURCES OPERATING, INC. 19964 BOHANNAN DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15625 BOHL, ANNIE BIG FOOT U.S. JIMOIL CORPORATION 00071 BOHL, ANNIE BIG FOOT (OLMOS D-3 SAND) U.S. JIMOIL CORPORATION 11479 BOHL, EDWARD A. CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 08517 BOHL, EDWARD A. FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 09875 BOHL, EDWARD A. -C- CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 12203 BOHLS NOACK CUTRER ENERGY 10419 BOLDT TRACT -A- SOMERSET U. D. MAN, INC. 11697 BOLDT, ANGELINA LINNE (POTH -A- SAND) PRODUCTION RESOURCES, INC. 00966 BOLL FRO BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17440 BOLL-CALVERT UNIT FRO BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19290 BOMBA, J. B. IMOGENE, SOUTHEAST GUINN OPERATING COMPANY, LLC 00703 BONANZA SOMERSET PAISANO PRODUCTION, INC. 10770 BOND FAIRFIELD 338 OIL & GAS, INC. 16392 BOND PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15716 BOND TAYLOR-INA 338 OIL & GAS, INC. 18035 BOND, FLOYD C. TAYLOR-INA GHISELLI OIL, INC. 02975 BONGO HUNTER UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17192 BONGO NORTH UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17259 BONGO SOUTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18346 BONHAM EZZELL SAN CAJO OIL COMPANY 00566 BONILLA-WILLIAMS EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17514 BONILLAS RANCH -A- SOMERSET LOPEZ, HECTOR S. 11124 BONILLAS RANCH -B- SOMERSET LOPEZ, HECTOR S. 11125 BONITO A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19828 BONITO B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19830


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BONORDEN, MALCOLM KINGSBURY (BUDA LIME) GINCO OPERATING CO. 05829 BOOTH NIXON DARTEX ENERGY CORPORATION 13027 BOOTH RANCH PEARSALL (AUSTIN CHALK) VENADO OPERATING COMPANY LLC 12451 BOOTH UNIT PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 14450 BOOTH-BEELER PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 14616 BOOTH-WEAVER PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 12677 BOOTH, F. I. -C- PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05255 BOOTH, F. I. "D" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05697 BOOTH, W PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 14569 BOOTHE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15952 BORCHERS PEACH CREEK (AUSTIN CHALK) MARANATHA OIL COMPANY 14349 BORCHERS KOENNING UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15920 BORCHERS TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15889 BORCHERS-BORCHERS UNIT PEACH CREEK (AUSTIN CHALK) SRJC ENTERPRISES, LLC 12747 BORCHERS, M. J. ET. AL. PEACH CREEK (AUSTIN CHALK) MARANATHA OIL COMPANY 13120 BORCHERS, O EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16124 BORDOVSKY, J. S. "A" BIG FOOT (OLMOS D-3 SAND) WATSON ENERGY INVESTMENTS, LLC 04373 BOREN BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 12021 BORGFELD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15254 BOSELEY, MINNIE HELEN I. KAYE (NAVARRO) PRODUCTION RESOURCES, INC. 08628 BOSQUE UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18482 BOUCHER UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13543 BOULDIN EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15773 BOULDIN GIDDINGS (AUSTIN CHALK-1) CARTER, J.E. ENERGY, INC. 07349 BOULDIN TRUST 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17444 BOULDIN TRUST 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16745 BOULDIN TRUST-ROWELL EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17234 BOULDIN TRUST-TINSLEY EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18000 BOULDIN-MANFORD EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16942 BOULDIN-MANFORD-MOOS (AW1) EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18162 BOULDIN-MANFORD-MOOS (AW2) EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18167 BOULDIN-TINSLEY-RAEKE EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18174 BOULDIN, COLLIS CHRISTIAN (6800) PONTIAC OIL, INC. 12809 BOULDIN, PAULINE BOULDIN (RECKLAW B) SEGER RANCH OIL CO. 11506 BOULDIN, PAULINE OIL UNIT #1 BOULDIN (1730) SEGER RANCH OIL CO. 04838 BOWDEN, O.M. LULING-BRANYON EXXCEL OPERATING COMPANY 12281 BOWERS, RUTH M. PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 13148 BOWIE -F- BUCHANAN CARDOZO TECHNOLOGIES, INC. 08071 BOWIE,-A- BUCHANAN CARDOZO TECHNOLOGIES, INC. 07628 BOWLES-NANCE UNIT PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 13560 BOWMAN PEARSALL (AUSTIN CHALK) BOTASCH OPERATING, LLC 14872 BOWMAN -A- PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 15230 BOWMAN A 211 BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19499 BOWMAN A 231 BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19694 BOWMAN A 234 BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19165 BOWMAN A 235 BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19726 BOWMAN B 231 BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19164 BOWMAN EAST EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 16726 BOWMAN EAST 304 EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 19891 BOWMAN EAST 305 EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 19919 BOWMAN EAST 306 EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 19923


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BOWMAN RANCH THIRTEEN (AUSTIN) SEAGO PETROLEUM, INC. 12879 BOWMAN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 18356 BOWMAN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 18583 BOWMAN WEST EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 17472 BOWMAN 6 PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17456 BOWMAN 68 UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17625 BOWMAN 7 PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17750 BOWMAN 82 UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17578 BOWMAN-ANDERSON UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17453 BOWMAN-GOMEZ UNIT 69 PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17612 BOWMAN-MINX UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17623 BOWMAN-SPEAS UNIT 67 PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17619 BOWMAN-STANDIFER UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17438 BOWMAN-YOUNG UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17704 BOWMAN, MCLEAN "B" GOOD LUCK (SAN MIGUEL) SPRI OIL & GAS, LLC 05859 BOWMAN, RUTH M. BIG FOOT PRIDE ENERGY COMPANY 00115 BOWMAN, RUTH MCLEAN PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14856 BOWMAN, RUTH MCLEAN THIRTEEN, EAST (3650 OLMOS) PINTO OIL CO. 05968 BOX PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15712 BOYD PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17412 BOYD BROS BIG FOOT JB OIL & GAS WELL SERVICE 09851 BOYD, G. G. PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 05350 BOYLES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16029 BOYSEN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16107 BOZARTH BUCHANAN X STONE ENERGY LLC. 02094 BOZARTH, T. M. BUCHANAN GREAT PLAINS RESOURCES, INC. 00139 BOZKA EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15546 BOZO RANCH DUNLAP BLACKMAR, JIM OIL OPERATOR 11498 BRACERO TRANSPORTATION CO. BRACERO (ELAINE) FINLEY RESOURCES, INC. 04510 BRACERO TRANSPORTATION CO., INC. BRACERO (SEG 3 ELAINE UPPER) FINLEY RESOURCES, INC. 03061 BRACERO TRANSPORTATION CO., INC. BRACERO (SEG 4 ELAINE UPPER) FINLEY RESOURCES, INC. 03923 BRACEWELL, FRANK "A' PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 13868 BRACEWELL, FRANK "B" PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 13869 BRACKEN EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 15838 BRACKEN "D" A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14342 BRACKEN "G" A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 09169 BRACKEN "H" A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14237 BRACKEN "I" A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 12182 BRACKEN EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 19663 BRACKEN ET AL A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 08288 BRACKEN RANCH A.W.P. (OLMOS) AWP OPERATING COMPANY 08593 BRADBERRY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16603 BRADLEY-KEVIL MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 08481 BRADY, T. H. PENA CREEK (SAN MIGUEL 3RD) IMPERATOR OPERATING, LLC 04335 BRADY, T. H. ESTATE PENA CREEK (SAN MIGUEL 3RD) IMPERATOR OPERATING, LLC 04441 BRAMAN JACOB GLG OIL & GAS CORP. 00709 BRAMAN JACOB HARVEY, K. S. 02826 BRAND ET AL MILANO (AUSTIN CHALK) ERNEST OPERATING COMPANY 05858 BRAND, E. C. IMOGENE, SOUTHEAST BRYMER CONTRACTING INCORPORATED 02586 BRANDER SOMERSET BRANDER, SAM H. 11595 BRANDT, HERBERT C. SOMERSET PETROSAURUS, INC. 10831


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BRANTLEY UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16896 BRANYON 40 ACRE -B- LULING-BRANYON AUSTIN OPERATING, LLC. 01132 BRANYON, F. M. LULING-BRANYON BENNETT, PATRICIA 01050 BRANYON, F. M. -A- LULING-BRANYON BENNETT, PATRICIA 01008 BRANYON, F. M. -B- LULING-BRANYON BENNETT, PATRICIA 01009 BRANYON, F. M. /15 AC. TR./ LULING-BRANYON BENNETT, PATRICIA 01010 BRANYON, W. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01056 BRAUCHLE PEARSALL (AUSTIN CHALK) JEM ENERGY 13088 BRAUNE A.W.P. (OLMOS) AWP OPERATING COMPANY 12344 BRAWLEY, F. LULING-BRANYON CASTILLO OIL COMPANY LLC 06683 BRAY PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14741 BRAY PENA CREEK (SAN MIGUEL 3RD) ENDEAVOR NATURAL GAS, LP 19950 BRAY, EALEN PENA CREEK (SAN MIGUEL 3RD) IMPERATOR OPERATING, LLC 04268 BRAY, EALEN -SJ- PENA CREEK (SAN MIGUEL 3RD) OIL, GAS, ETC. LLC 04513 BRAZOS UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18590 BREAZEALE PEARSALL (AUSTIN CHALK) OLMOS PARTNERS, INC. 13012 BREAZEALE SOMERSET PAISANO PRODUCTION, INC. 11436 BREAZEALE, J.L. SOMERSET EISE OIL, INC. 10834 BREAZEALE, J.L. ET UX SOMERSET EISE OIL, INC. 10781 BREAZEALE, SEEKER SOMERSET EISE OIL, INC. 10841 BREHM "A" ECKERT BRIGHT HAWK OPERATING COMPANY 15815 BREHM, A. C. ECKERT GINCO OPERATING CO. 00544 BREHM, L. ECKERT LUCROS INTERNATIONAL CORPORATION 00545 BREHM, M. ECKERT BRIGHT HAWK OPERATING COMPANY 15153 BREITZIEK LA VERNIA CAL-WACO OIL CO. INC. 08113 BREITZKE, L. COOKSEY DOEGE, DONALD 05467 BRET UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18271 BREWER 36 AC. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 01167 BREWER, ETAL, MRS. M. L. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 01154 BREWER, H. A. LYTTON SPRINGS DARST CREEK OIL COMPANY 01151 BREWER, M. L. LYTTON SPRINGS DARST CREEK OIL COMPANY 01156 BREWER, M. L. LYTTON SPRINGS GAUGE OIL COMPANY 01147 BREWER, M. L. -T- LYTTON SPRINGS DARST CREEK OIL COMPANY 01152 BREWER, M. L., MRS., ETAL -A- LYTTON SPRINGS DARST CREEK OIL COMPANY 02973 BREWER, M. L., MRS., ETAL -B- LYTTON SPRINGS DARST CREEK OIL COMPANY 02974 BRICE, MARY -A- UNIT BATESVILLE, SOUTH (ANACACHO) CW DALCAN MANAGEMENT SVCS, LTD. 06657 BRIDGERS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16953 BRIDGES, A. C. DUNLAP GREAT PLAINS RESOURCES, INC. 03931 BRIDGES, A. C. SALT FLAT W.W. ENERGY 01531 BRIDWELL LIMITED UNIT WILDCAT SN OPERATING, LLC 15988 BRIDWELL LIMITED UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15457 BRIETZKE, A. LA VERNIA CIVRON PETROLEUM RES., LLC 00921 BRIETZKE, ALBERT LA VERNIA DONOCO OIL COMPANY 00890 BRIETZKE, WALTER C. LA VERNIA ALCORN ENERGY, L.L.C. 03783 BRIGGS BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 15532 BRIGGS SOMERSET CALAME, RICHARD 10799 BRIGGS RANCH EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15446 BRIGGS RANCH D & E UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19192 BRIGGS UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16176 BRIGGS UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16130 BRIGGS UNIT C BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17098


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BRIGGS UNIT D BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17310 BRIGGS UNIT E BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17772 BRIGGS UNIT F BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17826 BRIGGS UNIT G BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18886 BRIGGS UNIT J BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 19081 BRIGGS UNIT K BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 19424 BRIGGS ZAPP ALLOCATION C EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19951 BRIGGS ZAPP ALLOCATION D EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19959 BRIGGS, A.K. SOMERSET CALAME, RICHARD 13774 BRINKLEY TREBMAL (SERPENTINE) MAGNUM OILFIELD SERVICES LLC 14380 BRINKMEYER -A- BEYERSVILLE, SW. BLACK JACK SERVICES, L.L.C. 03799 BRINSON, S. A. -A- IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 04338 BRISCO EAGLEVILLE (EAGLE FORD-1) BXP OPERATING, LLC 16790 BRISCOE BRISCOE RANCH (OLMOS) FLINT OAK ENERGY, LLC 14599 BRISCOE (5140) BRISCOE RANCH (OLMOS) FLINT OAK ENERGY, LLC 14732 BRISCOE -A- SOMERSET PETROSAURUS, INC. 11494 BRISCOE -B- SOMERSET PETROSAURUS, INC. 11362 BRISCOE "B" BRISCOE RANCH (OLMOS) CRIMSON ENERGY PTNRS III, L.L.C. 14816 BRISCOE CARLA RANCH BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 15238 BRISCOE CARLA RANCH UNIT A BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19302 BRISCOE CARLA RANCH UNIT B BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19513 BRISCOE CATARINA WEST BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19523 BRISCOE COCHINA EAST RANCH BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 15203 BRISCOE COCHINA WEST RANCH BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 15234 BRISCOE DICKERSON SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15880 BRISCOE ETAL SECTION 89 BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15443 BRISCOE ETAL SECTION 91 BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15444 BRISCOE G LORENZO (AUSTIN CHALK) SM ENERGY COMPANY 19954 BRISCOE METCALF UNIT BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19507 BRISCOE RANCH "A" WILDCAT FLINT OAK ENERGY, LLC 14724 BRISCOE RANCH ETAL SECTION 57 BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15223 BRISCOE RANCH ETAL SECTION 63 BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15373 BRISCOE RANCH UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16047 BRISCOE RANCH UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16406 BRISCOE RANCH UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16311 BRISCOE-MCKNIGHT BRISCOE RANCH (EAGLEFORD) EL TORO RESOURCES LLC 15128 BRISCOE-MCKNIGHT LORENZO (AUSTIN CHALK) EL TORO RESOURCES LLC 19225 BRISCOE-SANER CHITTIM (AUSTIN CHALK) PATTERSON ENERGY CORPORATION 14368 BRISCOE-SANER CHITTIM (GEORGETOWN) PATTERSON ENERGY CORPORATION 14449 BRISCOE-SANER M.F. JAKE LAWLESS (EDWARDS LIME) PATTERSON ENERGY CORPORATION 14807 BRISCOE-SANER PRICKLY PEAR (GLEN ROSE) PATTERSON ENERGY CORPORATION 14397 BRISCOE-SANER TWO M (GEORGETOWN) PATTERSON ENERGY CORPORATION 15133 BRISCOE, DOLPH "C" BRISCOE RANCH (OLMOS) FLINT OAK ENERGY, LLC 14745 BRISCOE, JOE E. SOMERSET PETROSAURUS, INC. 06318 BRISCOE, MARTHA SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15009 BRISCOE, MARTHA -A- SALT FLAT DST OIL COMPANY 01493 BRISCOE, MARTHA -B- SALT FLAT DST OIL COMPANY 01999 BRISCOE, MARTHA -C- SALT FLAT FLAMINGO OIL & GAS 03535 BRISCOE, TRAP -A- 100 ACRES SALT FLAT FLAMINGO OIL & GAS 01465 BRISCOE, TRAP -B- SALT FLAT EAGLE FORD OIL CO., INC. 03491 BRISCOE, TRAP 56 ACRES SALT FLAT GUINN OIL COMPANY 01466


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BRISTER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18683 BRITE LEG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17207 BRITE, ROY A. SOMERSET SOUTHWEST LOOP 1604, LTD. 11120 BROCKENBUSH -B- MINERVA-ROCKDALE LA PLATA OPERATING CO., INC. 10340 BROKEN ARROW RANCH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16105 BROKEN ARROW RANCH UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16289 BROKEN ARROW RANCH UNIT D LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16106 BROLL EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 16774 BRONSON-FRANCIS-SLATER UNIT SALT FLAT RODENBERG-WALKER 03213 BRONSON-FRANCIS-SLATER-A- SALT FLAT RODENBERG-WALKER 03260 BROOKS, DENNIS MINERVA-ROCKDALE UBETCO, INC. 13055 BROS UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16764 BROTHERS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15253 BROWN WILDCAT PROPERTY DEVELOPMENT GROUP, INC. 14388 BROWN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15565 BROWN FAIRFIELD PREMIER MINERALS, INC. 17934 BROWN LULING-BRANYON EAGLE FORD OIL CO., INC. 03200 BROWN PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 06129 BROWN PEARSALL (OLMOS -A-) DIMMIT COUNTY SWD, LLC 15870 BROWN SALT FLAT IRON ORCHARD OPERATING LLC 07870 BROWN "A" PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 05763 BROWN ESTATE BUCHANAN GAUGE OIL COMPANY 00140 BROWN ESTATE SOMERSET SEAGULL OPERATING CO., INC. 11227 BROWN INVESTMENTS EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16284 BROWN TRUST EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15756 BROWN TRUST-SHINING STAR ALLC D EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19203 BROWN TRUST-SHINING STAR ALLC E EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19204 BROWN TRUST-SHINING STAR ALLC F EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19205 BROWN TRUST-SHINING STAR ALLC G EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19206 BROWN TRUST-SHINING STAR ALLC H EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19210 BROWN TRUST-SHINING STAR ALLC I EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19211 BROWN TRUST-SHINING STAR ALLC J EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19212 BROWN TRUST-SHINING STAR ALLC K EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19213 BROWN TRUST-SHINING STAR ALLC L EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19214 BROWN TRUST-SHINING STAR ALLC M EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19215 BROWN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17416 BROWN UNIT SALT FLAT, WEST GOG FIELDS, INC. 13645 BROWN UNIT B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17519 BROWN UNIT C EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17520 BROWN UNIT D EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17521 BROWN UNIT E EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17522 BROWN UNIT F EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17523 BROWN-BAHLMANN UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15861 BROWN/DEVAUGHN SALT FLAT COMANCHE WELL SERVICE CORP. 08350 BROWN, ALICIA FAIRFIELD CALK, ROGER D. 08569 BROWN, G. L. CHARLOTTE (NAVARRO) FREEMAN, J. L., OPER. 04648 BROWN, GUY LULING-BRANYON EAGLE FORD OIL CO., INC. 06526 BROWN, HAL -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 00993 BROWN, HAL -C- LULING-BRANYON EAGLE FORD OIL CO., INC. 03977 BROWN, HAL -D- LULING-BRANYON EAGLE FORD OIL CO., INC. 01011 BROWN, HAL -E- LULING-BRANYON EAGLE FORD OIL CO., INC. 01012


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BROWN, HORACE SOMERSET PRODUCTION RESOURCES, INC. 10897 BROWN, HORACE SOMERSET SEAGULL OPERATING CO., INC. 11218 BROWN, J. J. BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 03355 BROWN, J. J. BUCHANAN W.W. ENERGY 00156 BROWN, J. T. ET AL UNIT SALT FLAT, WEST E. T. OIL COMPANY 06713 BROWN, JACK JR. FLORESVILLE, EAST CALTEX ENERGY CO. 05956 BROWN, JAMES CHICON LAKE GENIE OIL COMPANY 09970 BROWN, JAMES R. STULTING HARRIER HOLDINGS, LTD. 05502 BROWN, JIM, ETAL SALT FLAT SHEFTS & SHEFTS, INC. 03028 BROWN, JOE MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 02770 BROWN, OLGA CHICON LAKE RLU OIL & GAS, INC. 00298 BROWN, R.E., JR. ET UX SALT FLAT SHWJ OIL & GAS CO., INC. 05605 BROWN, REEVES A-69 MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 02587 BROWN, SADIE TENNEY CREEK IRON ORCHARD OPERATING LLC 06406 BROWN, T. H. LULING-BRANYON EAGLE FORD OIL CO., INC. 03673 BROWN, T. HARRY LULING-BRANYON BENNETT, PATRICIA 06132 BROWN, T. HARRY LULING-BRANYON G & G OIL 00994 BROWN, T. HARRY -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 06372 BROWN, T. HARRY -A- LULING-BRANYON G & G OIL 10587 BROWN, T. HARRY -A- LULING-BRANYON SHEFTS & SHEFTS, INC. 11325 BROWN, T. HARRY -B- LULING-BRANYON G & G OIL 11326 BROWN, T. HARRY -C- LULING-BRANYON SHEFTS & SHEFTS, INC. 11327 BROWN, T. R. LULING-BRANYON EAGLE FORD OIL CO., INC. 01862 BROWN, T.H. LULING-BRANYON G & G OIL 14814 BROWN, T.H. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 12383 BROWNE, HAL, 2.77 ACRES LULING-BRANYON SHEFTS & SHEFTS, INC. 00992 BROWNLOW BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15294 BRUCE WEAVER PEARSALL (BUDA, S.) WCS OIL & GAS CORPORATION 17948 BRUNDAGE PEARSALL (AUSTIN CHALK) THALMANN, DAVID VAC SERVICE INC 13021 BRUNDAGE-IVY UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 14940 BRUNDRETT EAGLE UNIT BRISCOE RANCH (EAGLEFORD) MUELLER EXPLORATION, INC. 15921 BRUNS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17280 BRUNS UNIT FULCHER (EDWARDS A) 2 D OIL & GAS LLC 14162 BRUNS-MILLER UNIT CHRISTIAN (6800) MODERN EXPLORATION, INC. 13167 BRUNS-MILLER UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 15447 BRUTON, DEWEY ETUX FAIRFIELD DIAMOND TRADING & PIPELINE CORP 02181 BRYAN, E.S. SUTIL (BUDA) SEDCO RESOURCES INC 06403 BRYAN, GLEN SOMERSET U. D. MAN, INC. 10957 BRYMER EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16269 BUBBA GOODWIN EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16891 BUBBLING OVER PEARSALL (AUSTIN CHALK) PAYROCK II, LLC 19429 BUCHANAN PEARSALL (BUDA, S.) TRINITY OPERATING (USG), LLC 17742 BUCHANAN -B- UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 14838 BUCHANAN, JOHN F. -A- PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 13173 BUCHHOLTZ, A.M. DUNLAP BLACKMAR, JIM OIL OPERATOR 06732 BUCHHOLTZ, A.M. DUNLAP NAPOLEON WATER WORKS 10248 BUCHSENSCHUTZ, R. SOMERSET GREAT PLAINS RESOURCES, INC. 10761 BUCHSENSCHUTZ, R. -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10806 BUCK PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 19573 BUCK PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19440 BUCKINGHAM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17626


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BUCKLEY, CLIFFORD ET AL PEARSALL (AUSTIN CHALK) VANCO OIL & GAS CORP. 12412 BUCKLEY, CLIFFORD ETAL PEARSALL (AUSTIN CHALK) D.J.F. SERVICES, INC. 13742 BUERGER PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05629 BUERGER, LENA PEARSALL (AUSTIN CHALK) HUGHES, DAN A. COMPANY, L.P. 05567 BUERGER, LENA PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 14743 BUFFALO HUNTER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16976 BUFFETT YBAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18363 BUFFLEHEAD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17055 BUFKIN, JAMES T. TENNEY CREEK STAR OIL, LLC 06109 BUGAI, L.J. -A- LA VERNIA THREE J ENERGY, INC. 06000 BUICK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17766 BULLOCK SALT FLAT TRINITY ENVIRO SWD I, L.L.C. 10051 BULLSEYE UNIT BRISCOE RANCH (EAGLEFORD) ATLAS OPERATING LLC 18889 BULLSEYE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17792 BUNCH, JOE LULING-BRANYON E & W OIL, INC. 03385 BUNCH, JOE "A" LULING-BRANYON E & W OIL, INC. 03461 BUNCH, JOE "C" LULING-BRANYON E & W OIL, INC. 01048 BUNDRICK KAYE (NAVARRO) QUEST RESEARCH & DEV. CORP. 11934 BUNDRICK, D. K. KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 01880 BUNDRICK, V. HASSE (BUDA) PETROLIA DRILLING CORP. 08179 BUNDRICK, V. HIGGINS, NE (AUSTIN CHALK) VAN WINKLE OIL 07161 BUNTIN DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16333 BURCHARD, LOUIS H. OIL UNIT PEACH CREEK (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 07464 BURDITT, DALE LULING-BRANYON TEXSTAR OIL & GAS, LLC 08935 BUREAU OF ECONOMIC GEOLOGY WILDCAT REGENCY ENERGY, INC. 14611 BURGADA A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19971 BURGARD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18161 BURKETT, FRED E. KYOTE GINCO OPERATING CO. 09164 BURKHARDT-SKILES MAC SIMON ET AL EZZELL SAN CAJO OIL COMPANY 00571 BURKHARDT, KATIE PRUITT, N. (4500) BRYMER CONTRACTING INCORPORATED 11978 BURKHARDT, KATIE PRUITT, S. (ESCONDIDO) HOME PETROLEUM CORP. 08822 BURLESON DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 17569 BURLESON PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 19345 BURLESON COUNTY OIL -A- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 10153 BURLESON COUNTY OIL CO. MILBUR (NAVARRO) LEXINGTON FINANCIAL SERVICES,INC 10002 BURLESON-COKER PEARSALL (AUSTIN CHALK) HOLLUB, LAMBERT DRILLING COMPANY 04684 BURNAL, BAKER NIXON L & L PIPE & SUPPLY INC. 07659 BURNETT PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 13085 BURNS MINERVA-ROCKDALE EDMONDS, JERRY 07801 BURNS -A- PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 12447 BURNS "D-F-STATE UNIT PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 13562 BURNS "D" PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 13276 BURNS "E-D-F STATE" UNIT PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 13379 BURNS "H" UNIT PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 12952 BURNS EAGLEFORD B UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19177 BURNS EAGLEFORD C UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 18933 BURNS EAGLEFORD D UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 18924 BURNS EAGLEFORD E UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19020 BURNS HEIRS PEARSALL (AUSTIN CHALK) CORE E & P CORP. 12271 BURNS RANCH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18854 BURNS RANCH EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15409


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BURNS RANCH PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 14858 BURNS RANCH A BRISCOE RANCH (EAGLEFORD) EP ENERGY E&P COMPANY, L.P. 15361 BURNS RANCH A PEARSALL (BUDA LIME) EP ENERGY E&P COMPANY, L.P. 15699 BURNS RANCH T BRISCOE RANCH (EAGLEFORD) TEXAS AMERICAN RESOURCES COMPANY 19610 BURNS RANCH T PEARSALL (BUDA LIME) TEXAS AMERICAN RESOURCES COMPANY 19605 BURNS RANCH-B- PEARSALL (AUSTIN CHALK) CALLON (EAGLE FORD) LLC 12683 BURNS-EAGLEFORD A EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 18492 BURNS, "D" PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 13690 BURNS, ANN BIG FOOT CREATIVE OIL AND GAS OP II, LLC 04430 BURNS, ANN -A- BIG FOOT CREATIVE OIL AND GAS OP II, LLC 12014 BURNS, ELLA KYOTE BIGFOOT OIL LLC 00801 BURNS, JANE BIG FOOT WATSON ENERGY INVESTMENTS, LLC 00088 BURNS, JANE BIG FOOT (OLMOS D-3 SAND) DIAMOND ENERGY SERVICES, LP 00118 BURNS, JANE -A- BIG FOOT WATSON ENERGY INVESTMENTS, LLC 00089 BURNS, JANE -B- BIG FOOT CREATIVE OIL AND GAS OP II, LLC 00063 BURNS, JANE -B- KYOTE BIGFOOT OIL LLC 00802 BURNS, JANE -C- BIG FOOT CREATIVE OIL AND GAS OP II, LLC 00064 BURNS, JANE -C- BIG FOOT WATSON ENERGY INVESTMENTS, LLC 00091 BURNS, JANE -C- KYOTE DIAMOND ENERGY SERVICES, LP 14310 BURNS, JANE -D- BIG FOOT CREATIVE OIL AND GAS OP II, LLC 04449 BURNS, JANE -E- BIG FOOT CREATIVE OIL AND GAS OP II, LLC 04551 BURNS, JANE A BIG FOOT (OLMOS D-3 SAND) DIAMOND ENERGY SERVICES, LP 14885 BURR SALT FLAT, WEST EAGLE FORD OIL CO., INC. 06800 BURR C TWO M (GEORGETOWN) FIELD PETROLEUM CORP. 14955 BURR C 8-231XH UNIT TWO M (GEORGETOWN) FIELD PETROLEUM CORP. 15710 BURR-BROWN -C- SALT FLAT E. T. OIL COMPANY 05935 BURR, J. K. EST. WIPFF (GEORGETOWN 2190) FLINT INTERESTS, LLC 04162 BURRIS, CARLYN SALT FLAT BURRIS OPERATING CO. 09681 BURRIS, CARLYN -A- SALT FLAT PETROSAURUS, INC. 09682 BURROW UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16475 BURSELL -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10978 BURSELL -B- SOMERSET GREAT PLAINS RESOURCES, INC. 10979 BURTON-BARNES-BUTLER PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12560 BUSCH, R. D. BURMIL (2400 WILCOX) ROSENTHAL, STANLEY H. 13502 BUSCH, R. D. W.C. FINCH (SIMSBORO 1900) ROSENTHAL, STANLEY H. 13631 BUSCH, R.D. BURMIL (2600 WILCOX) ROSENTHAL, STANLEY H. 13630 BUSH MINERVA-ROCKDALE JACK OPERATING 16568 BUSH, E. M. SOMERSET PETRO LIONS, LLC 02455 BUSH, E.M. -A- SOMERSET PETRO LIONS, LLC 10656 BUSH, ED. SOMERSET PETRO LIONS, LLC 10860 BUTLER EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 15522 BUTLER MILBUR (NAVARRO) MICRO OPERATING, INC. 10195 BUTLER, MILTON C. SUTIL (AUSTIN) FIRST ROCK, INC. 06619 BUTTERFLY DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16437 BUTTS & SAWYER PLEASANTON, S. (EDWARDS) DAYLIGHT PETROLEUM LLC 15017 BUTTS & SAWYER PLEASANTON, SOUTH (EDWARDS LIME) DAYLIGHT PETROLEUM LLC 14135 BUTTS & SAWYER/MOSBACHER PLEASANTON, S. (ANACACHO) DAYLIGHT PETROLEUM LLC 14716 BV PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 15811 BYERLY-STRAIT UNIT DIM BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 18319 BYERLY, RADFORD BIG WELLS(SAN MIGUEL, LO., EAST) QUATRO OIL AND GAS, INC. 04205 BYNUM, J. S. -A- COUGHRAN (AUSTIN CHALK) DEASON OIL & GAS INTERESTS 04006


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BYRD BUDA A AMMANN (BUDA) TERRAFINA ENERGY, LLC 18858 BYRD BUDA B AMMANN (BUDA) TERRAFINA ENERGY, LLC 18785 BYRD RANCH EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15482 BYRD UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18348 BYRD UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18351 BYRD UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18337 BYRD UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18349 BYRD UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18558 BYRD UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18555 BYRD 2-H MARCELINA CREEK (AUSTIN CHALK) ARRIOLA OPERATING & CONSLTG INC. 12983 BYRD, CHESTER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01057 BYRD, CLARA LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 07971 BYRD, K.W. MARCELINA CREEK (AUSTIN CHALK) ENR OPERATING, LLC 10561 BYRD, LEE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03169 BYRD, LEE FEE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01060 BYROM, E. SOMERSET MORE TEXAS OIL 11119 BYROM, E. E. CROWN, E. (NAVARRO) CENTEX DEVELOPMENT 03782 BYROM, M.H. CROWN, E. (NAVARRO) EXXCEL OPERATING COMPANY 00398 C & V WEBB DRUMMOND (EDWARDS 1800) BENCHMARK TEXAS PETROLEUM, LLC. 16424 C N COOKE WILDCAT SANDMAN EXPLORATION, L.L.C. 19893 C R RANCH UNIT LULING-BRANYON NORTH SOUTH OIL, LLC 17332 C. E. SCULL, JR. ET AL UNIT LA VERNIA (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13364 C. M. RACKEL BURMIL (2600 WILCOX) HAMMAN OIL & REFINING COMPANY 17711 C. SMITH "B" SALT FLAT NORTH SOUTH OIL, LLC 14914 C.E.SCULL,JR.-G- GLENN POTH (POTH SAND) ELAM OIL COMPANY LLC 14142 C.PFEIL-C.KELLNER-C.HUMMEL PSA EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19583 C-WILLOW DAIRY INC "C" LA VERNIA TANGLEHEAD OPERATING, LLC 09934 CAB UNIT JOURDANTON (BUDA) MURPHY EXPL. & PROD. CO. - USA 18422 CACTUS PEARSALL (OLMOS -A-) SELECT ENERGY SERVICES, LLC 14900 CACTUS ROSE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17461 CACY-SAUER FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 09305 CADENHEAD UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17343 CAFFARELLI ESTATE PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 05296 CAG-ARISTIDES PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12943 CAG-BYERLY PEARSALL (AUSTIN CHALK) RANGER O & G OPERATING, LLC 12692 CAG-LANG-14-2 PEARSALL (AUSTIN CHALK) CAG PETROLEUM CORP. 12376 CAG-LANG-200 PEARSALL (AUSTIN CHALK) CAG PETROLEUM CORP. 12570 CAGE RANCH COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 15139 CAGE RANCH 63 COMANCHE-HALSELL (6500) PATTERSON ENERGY CORPORATION 14874 CAGE-BRISCOE "B" 337H UNIT COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 14765 CAGE-BRISCOE B COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 14800 CAGE-BRISCOE B 128H UNIT COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 14979 CAGE-BRISCOE B 138H UNIT COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 14960 CAGE-BRISCOE B 545H UNIT COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 14867 CAGE-BRISCOE B145 UNIT COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 14624 CAGE-BRISCOE C COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 14764 CAGE-BRISCOE C 259H UNIT COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 14972 CAGE-WEST B COMANCHE-HALSELL (6500) EL TORO RESOURCES LLC 15137 CAGE-WEST B PENA CREEK (GEORGETOWN) EL TORO RESOURCES LLC 15061 CAGE, R.C. "45" CAGE RANCH (EAGLEFORD) STACHA, EDDY A. 06210 CAIN A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17231


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CAIN, J. D. SALT FLAT BUBBA LYNN CRUDE 03013 CAIN, J. D. SALT FLAT CASTILLO OIL COMPANY LLC 02945 CAIN, JOSEPH A. FAIRFIELD GREAT PLAINS RESOURCES, INC. 06843 CALAME BIG FOOT H & M PETROLEUM CORPORATION 14246 CALAME CORN (OLMOS D-2) CALAME, JACK 14390 CALAME PRUE RANCH (ANACACHO FB-1) LP OPERATING, LLC 19190 CALAME A BIG FOOT PROPERTY DEVELOPMENT GROUP, INC. 15054 CALDARKO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17417 CALDWELL COUNTY LULING-BRANYON CASTILLO OIL COMPANY LLC 03560 CALDWELL, T.J. JIM SMITH THRALL OPERATING COMPANY, INC. 08090 CALK, E. W. SOMERSET CALK OPERATING, LLC 10893 CALKINS EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16716 CALKINS-KOTHMANN PEARSALL (AUSTIN CHALK) VENADO OPERATING COMPANY LLC 15201 CALKINS-KOTHMANN UNIT NO. 2 BACKDRAFT (OLMOS) VENADO OPERATING COMPANY LLC 17606 CALLAHAN, M. W. LULING-BRANYON MEB, LLC 03717 CALLAHAN, M. W., -A- LULING-BRANYON MEB, LLC 03808 CALLIHAN LULING-BRANYON EAGLE FORD OIL CO., INC. 03206 CALLIHAN, DOROTHY LULING-BRANYON SOTOL ENERGY, INC. 05390 CALLIHAN, J. G. LULING-BRANYON M & M PETROLEM, INC. 02165 CALLIHAN, JIM LULING-BRANYON GINCO OPERATING CO. 03448 CALLIHAN, JIM G. LULING-BRANYON GEOMEG ENERGY OPERATING CO., LLC 03549 CALLIHAN, M. W. LULING-BRANYON MEB, LLC 02522 CALLIHAN, M. W. LULING-BRANYON MEB, LLC 04606 CALLIHAN, M. W. -A- LULING-BRANYON MEB, LLC 06371 CALLIHAN, M. W. -C- LULING-BRANYON MEB, LLC 13294 CALLIHAN, M.W. LULING-BRANYON MEB, LLC 06360 CALLIHAN, M.W. -B- LULING-BRANYON MEB, LLC 10664 CALLIHAN, W. M. LULING-BRANYON MEB, LLC 00995 CALLIHAN, W. M. -A- LULING-BRANYON CASTILLO OIL COMPANY LLC 00987 CALLIHAN, W. M. -C- LULING-BRANYON CASTILLO OIL COMPANY LLC 01052 CALTON, A. D. MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 01229 CALVERT PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 16076 CALVERT SUTIL (REEF) SEGURO WELL SERVICE, INC. 09740 CALVERT FARMS PECAN GAP (5050) ARBOL RESOURCES, INC. 19285 CALVERT RANCH FRO BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17100 CALVIN, CHARLES MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 02407 CAMARO A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17323 CAMARO B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17099 CAMBER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16808 CAMERO, FRANK SOMERSET SOUTHWEST LOOP 1604, LTD. 10873 CAMP TRUST C.J.P. (REEF) MORE TEXAS OIL 09345 CAMP TRUST -A- C.J.P. (REEF) MORE TEXAS OIL 11406 CAMPBELL PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 14057 CAMPBELL VELMA (ESCONDID0) CORE E & P CORP. 09464 CAMPION, RALPH L. PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 12953 CANAL, H. & K. FAIRFIELD CRYSTAL RESOURCES, INC 02265 CANNAN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14695 CANNAN PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 13402 CANNON, E. H. PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 04734 CANNONADE RANCH PILGRIM (AUSTIN CHALK) PENN VIRGINIA OIL & GAS, L.P. 12947 CANNONADE RANCH NORTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15524


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CANNONADE RANCH SOUTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15926 CANNONADE RANCH SOUTH INDIO TANKS (PEARSALL) PENN VIRGINIA OIL & GAS, L.P. 17768 CANNONADE RANCH SOUTH UNIT NO. 1 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18153 CANTINA TRI BAR (OLMOS) FLETCHER OPERATING, LLC 14902 CANTU WILDCAT STX 13768 CANTU MARKAS (SERPENTINE REEF) STX 13700 CANTU PEARSALL (AUSTIN CHALK) OGOG OPERATING, LLC 12392 CANTU-HENDERSON PEARSALL (AUSTIN CHALK) OGOG OPERATING, LLC 16116 CANVASBACK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17010 CAP UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 17401 CAPITOL THOMPSON II PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 13602 CAPITOL THOMPSON III PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 13657 CAPITOL THOMPSON III PEARSALL (BUDA LIME) EAGLE FORD OIL CO., INC. 14430 CARACARA UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 19962 CARDWELL MINUTEMEN (GEORGETOWN) R. H. ENERGY CO., INC. 12076 CARDWELL 52 1/2 AC. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 01168 CARDWELL, A. T. LYTTON SPRINGS DARST CREEK OIL COMPANY 01158 CARDWELL, A. T., 44 AC. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 01165 CARDWELL, F. A. LYTTON SPRINGS DARST CREEK OIL COMPANY 01153 CARDWELL, F. A., 18 AC. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 01166 CARDWELL, L. A. LYTTON SPRINGS DARST CREEK OIL COMPANY 01149 CARDWELL, WILLIE LYTTON SPRINGS CARDWELL'S U BAR OIL 10563 CARDWELL, WILLIE -A- MCMILLEN (DALE LM.-SERPENTINE MC. W. K. W. & T. INVESTMENTS 06059 CARIBOU EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17211 CARL SAMPLE EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17754 CARLA SOUTH SPUR UNIT A BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19286 CARLA SWD BRISCOE RANCH (EAGLEFORD) CHOYA OPERATING, LLC 18177 CARLA UNIT GIDDINGS (AUSTIN CHALK-1) CJ TEJAS ENERGY, LLC 07257 CARLSON 'C' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15994 CARLSON "A" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15398 CARLSON "B" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15846 CARNES CHRISTIAN (6800) RADIUS OPERATING, LLC 10626 CARNES 'B' PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 18188 CARNES "A" PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14508 CARNES "B" PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14510 CARNES "B" PEARSALL (BUDA LIME) PERDIDO ENERGY, LLC 15908 CARNES FARMS, INC. LEE RANCH (SAN MIGUEL 1850) JL RESOURCES, LLC 17518 CARNES POOLED UNIT SOMERSET SEEKER OIL COMPANY, INCORPORATED 10842 CARNES 302 BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19897 CARNES 303 BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19898 CARNES-REGENTS UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19914 CARNES, LEE PILGRIM (NAVARRO) GLADE OPERATING, LLC 06669 CAROLPICK PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18034 CAROLYN PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19134 CAROLYN SOMERSET EVERETT OIL, INC. 11280 CARON UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18526 CARON UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18667 CARPENTER PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17617 CARR, L.C. KAYE (NAVARRO) JGC OIL CO. 02251 CARRASCO A204 BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19476 CARRICO PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05538


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CARRIZO SPRINGS SWD EVERGREEN FARMS (AUSTIN CHALK) BASIC ENERGY SERVICES, L.P. 16480 CARRIZO SWD PEARSALL (AUSTIN CHALK) TW SWD OPERATOR, LLC 17674 CARROL, VERNON FAIRFIELD STARR OPERATING COMPANY 01981 CARROLL MARCELINA CREEK (BUDA) DENNIS, L.W. & ASSOCIATES, INC. 11409 CARROLL PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12512 CARROLL PEARSALL (AUSTIN CHALK) QUEST RESEARCH & DEV. CORP. 12974 CARROLL UNIT COST (BUDA) J.W. SERVICE COMPANY 08035 CARROLL, JOHN TRUSTEE MARCELINA CREEK (AUSTIN CHALK) AMPAK OIL COMPANY 13935 CARSON BRISCOE RANCH (EAGLEFORD) XOG OPERATING LLC 16368 CARSON A EAGLEVILLE (EAGLE FORD-1) DEVON ENERGY PRODUCTION CO, L.P. 16082 CARTER CHICON LAKE GROTHUES, G B OIL 09477 CARTER EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 15931 CARTER SALT FLAT CARTER CATTLE & CRUDE COMPANY 01494 CARTER SPILLER TEXSTAR OIL & GAS, LLC 03676 CARTER -A- SOMERSET SEAGULL OPERATING CO., INC. 11238 CARTER -B- SALT FLAT CARTER CATTLE & CRUDE COMPANY 02048 CARTER "E" SOMERSET SEAGULL OPERATING CO., INC. 11136 CARTER UNIT SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15102 CARTER, A. J. DUNLAP TEXSTAR OIL & GAS, LLC 03822 CARTER, ANNETTE BONDALE LA VERNIA ENERGON3 11456 CARTER, E. L., -A- DUNLAP KIDD PRODUCTION CO. 03707 CARTER, ELWOOD -A- SPILLER TEXSTAR OIL & GAS, LLC 06764 CARTER, ELWOOD -B- SPILLER QUEST EMG, INC. 13031 CARTER, KATHLEEN E. FAIRFIELD GREAT PLAINS RESOURCES, INC. 07780 CARTER, N. J. LULING-BRANYON TEXSTAR OIL & GAS, LLC 01955 CARTER, R. W. SALT FLAT M & J PRODUCTION COMPANY 02005 CARTER, R. W. SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 14965 CARTER, R. W. -A- SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15035 CARTER, R. W. -A- SALT FLAT BAY CITY DRILLING CO. INC. 02030 CARTER, ROBERT W. SALT FLAT B-3 OIL CO. 01872 CARTER, ROBERT W., -A- SALT FLAT B-3 OIL CO. 01501 CARTER, W. L. PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 04593 CARTRIGHT, H.G. LULING-BRANYON RIDGELING WELL SALVAGE 06979 CARTWRIGHT LULING-BRANYON EAGLE FORD OIL CO., INC. 03845 CARTWRIGHT TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 14734 CARTWRIGHT TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 14993 CARTWRIGHT WASHBURN, WEST (WILCOX LO.) BUFFALO OIL CORP. 04249 CARTWRIGHT -A- WASHBURN, WEST (WILCOX 5100) BUFFALO OIL CORP. 12060 CARTWRIGHT -A- WASHBURN, WEST (5270) BUFFALO OIL CORP. 05099 CARTWRIGHT "A" COOKE RANCH (OLMOS) LEWIS PETRO PROPERTIES, INC. 14915 CARTWRIGHT, A. M. LULING-BRANYON EAGLE FORD OIL CO., INC. 03493 CARTWRIGHT, A. M. -C- LULING-BRANYON EAGLE FORD OIL CO., INC. 02840 CARTWRIGHT, A. M. "D" LULING-BRANYON EAGLE FORD OIL CO., INC. 03614 CARTWRIGHT, A. M. SWD LULING-BRANYON EAGLE FORD OIL CO., INC. 14239 CARTWRIGHT, A.M. LULING-BRANYON EAGLE FORD OIL CO., INC. 02709 CARTWRIGHT, A.M. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 02829 CARTWRIGHT, A.M. "A" LULING-BRANYON EAGLE FORD OIL CO., INC. 05855 CARTWRIGHT, H. G. LULING-BRANYON RIDGELING WELL SALVAGE 03967 CARUTHERS, TEX SOMERSET UNDERBRINK OIL 01611 CARVER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16263 CASANO SOMERSET GLOVER OIL, INC. 11092


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CASARES SOMERSET K2 PETROLEUM, INC. 11110 CASARES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15372 CASARES UNIT MARCELINA CREEK (BUDA) PONTIAC OIL, INC. 11417 CASH UNIT PLUM CREEK (SERPENTINE) H & K OIL COMPANY (A) 15013 CASH UNIT PLUM CREEK, N. (DALE LIME) H & K OIL COMPANY (A) 12298 CASHEN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18308 CASIAS, JIMMIE SOMERSET CASIAS OIL WELL SERVICE, INC. 10736 CASIAS, JIMMIE SOMERSET CASIAS OIL WELL SERVICE, INC. 10772 CASIAS, ROBERT A. SOMERSET GREAT PLAINS RESOURCES, INC. 10773 CASPARIS MINERVA-ROCKDALE SMITH, L C PRODUCTION 07745 CASPIAN A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19811 CASSIN UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17232 CASSIN, MRS. S. D. S. ET AL BATESVILLE, SW. (SAN MIGUEL) CORE E & P CORP. 05278 CAST BATEMAN (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13548 CAST BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 10054 CAST BUCHANAN MEB, LLC 12133 CAST -X- BATEMAN (AUSTIN CHALK) AUSTIN OPERATING, LLC. 13593 CAST/DINGES BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13481 CAST/DINGES "A" BATEMAN (AUSTIN CHALK) AUSTIN OPERATING, LLC. 13520 CAST, G. BATEMAN (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13341 CAST,GRADY BUCHANAN AUSTIN OPERATING, LLC. 04327 CASTANEDA FAIRFIELD HASLETT, TERRY E. 11530 CASTELLANO, NIEVES FAIRFIELD CRYSTAL RESOURCES, INC 01982 CASTELLAW-HUNDLEY PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 15096 CASTER, CLEMMIE DUNLAP TEXSTAR OIL & GAS, LLC 00533 CASTILLO, RAUL FAIRFIELD CALK, ROGER D. 07694 CASTO UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16788 CASTO UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16704 CAT EYES UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS OPERATING LLC 18221 CAT RANCH SWD BRISCOE RANCH (EAGLEFORD) CHOYA OPERATING, LLC 18115 CAT-DILLEY SWD PEARSALL (AUSTIN CHALK) TRINITY ENVIRO SWD I, L.L.C. 15949 CATARINA RANCH SWD BRISCOE RANCH (EAGLEFORD) CHOYA OPERATING, LLC 19765 CATARINA SWD J.F.S. SW(OLMOS 4120) HECKMANN WATER RESOURCES(CVR)INC 15552 CATFISH UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19263 CATY UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 17263 CAVAZOS, EMILIO ET AL SCHAFER-BROWN (ANACACHO) MILLENNIUM PETRO-PHYSICS, INC. 12326 CAVIL, TYRENA MINERVA-ROCKDALE ROCKDALE PARTNERS, L.L.C. 01230 CB UNIT INDIO TANKS (PEARSALL) MURPHY EXPL. & PROD. CO. - USA 17584 CBH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18135 CDV-WILLIAMS PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12992 CELLMAR SNOGA (TAYLOR OLMOS) BRITANCO, L.L.C. 12187 CEN-TEX #2 WILDCAT CEN-TEX PETROLEUM CO. 12297 CENIZO PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18525 CENIZO RANCH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15636 CENIZO-ALC UNIT PEARSALL (AUSTIN CHALK) STEPHENS PRODUCTION COMPANY 17693 CENTAVO LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16110 CENTAVO UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16519 CENTAVO UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16541 CENTRAL NATIONAL TENNEY CREEK E & C OPERATING LLC 10157 CENTRAL NATIONAL/BARE RIDGE TENNEY CREEK E & C OPERATING LLC 09506 CERVANTES, ERNESTO G. FAIRFIELD CRYSTAL RESOURCES, INC 02132


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CERVANTES, REYES E. ET UX FAIRFIELD GINCO OPERATING CO. 08186 CES CARRIZO YARD EVERGREEN FARMS, NE. (1ST OLMOS) COMPLETE ENERGY SERVICES, INC. 15829 CESAK, JOSEPH B. MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 06855 CHACHALACA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18418 CHACON, ERNEST D. & JESUS E. SOMERSET SYJ OIL & GAS, INC. 03188 CHAD PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 18965 CHADDOCK, DOROTHY MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 01268 CHADWICK, J. H. KAYE (NAVARRO) JGC OIL CO. 01875 CHAMOIS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16579 CHANDLER A MARCELINA CREEK (BUDA) RECOIL RESOURCES OPERATING, INC. 17487 CHANDLER, BYRON COSMOPOLITAN (AUSTIN CHALK) MEXAMERICAN WELL SERVICE CORP. 12299 CHANEY, TOM FEE FAIRFIELD CIVRON PETROLEUM RES., LLC 11878 CHAPA UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15970 CHAPAL, FRED R. FAIRFIELD STARR OPERATING COMPANY 02453 CHAPAROSSA A CHITTIM (EAGLEFORD) ESPADA OPERATING LLC 15227 CHAPARROSA BRISCOE RANCH (EAGLEFORD) ESPADA OPERATING LLC 15490 CHAPARROSA "A" WILDCAT ESPADA OPERATING LLC 15228 CHAPARROSA "A" LORENZO (AUSTIN CHALK) CW DALCAN MANAGEMENT SVCS, LTD. 15816 CHAPARROSA "D" BRISCOE RANCH (EAGLEFORD) BPX OPERATING COMPANY 15327 CHAPARROSA F WILDCAT ESPADA OPERATING LLC 17361 CHAPIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17102 CHAPMAN LULING-BRANYON GREAT PLAINS RESOURCES, INC. 01036 CHAPMAN SOMERSET GREAT PLAINS RESOURCES, INC. 11098 CHAPMAN PFEIL UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15659 CHAPMAN ROTHE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15604 CHAPMAN-ABBOTT UNIT CHAPMAN ABBOTT GENESIS WELL SERVICE 09246 CHAPMAN-PFEIL ALLOCATION EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 18361 CHAPMAN-PFEIL 1H PSA EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19585 CHAPMAN-PFEIL 2H PSA EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19696 CHAPMAN-PFEIL 4H PSA EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19591 CHAPMAN, ANNA WILDCAT RHD HOLDINGS, L.L.C. 14282 CHAPMAN, GEORGE R. LULING-BRANYON GINCO OPERATING CO. 02491 CHAPMAN, GEORGE R. -A- LULING-BRANYON GINCO OPERATING CO. 03559 CHAPMAN, GEORGE R. -B- LULING-BRANYON GINCO OPERATING CO. 03524 CHAPMAN, GEORGE R., -A- LULING-BRANYON GINCO OPERATING CO. 03246 CHAPMAN, H. H. LULING-BRANYON IRONROCK ENERGY CORPORATION 03631 CHAPMAN, J. D. "A" LULING-BRANYON NORTH SOUTH OIL, LLC 06471 CHARLES B PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18929 CHARLOTTE WATERFLOOD UNIT NO. 2 CHARLOTTE (NAVARRO) REC, LLC 03274 CHARLOTTE WATERFLOOD UNIT NO. 3 CHARLOTTE (NAVARRO) REC, LLC 03404 CHARLOTTE WATERFLOOD UNIT NO. 4 CHARLOTTE (NAVARRO) REC, LLC 03275 CHATO SUN T S H (OLMOS) FLETCHER OPERATING, LLC 14931 CHATO A SUN T S H (OLMOS) FLETCHER OPERATING, LLC 14943 CHAVEZ, ANTONIO MINERVA-ROCKDALE C-D OIL COMPANY, INC. 06395 CHEAPSIDE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17492 CHECKMATE SOMERSET GREAT PLAINS RESOURCES, INC. 11753 CHERRY-BILSKY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15737 CHERRY-TURK UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15866 CHERRY, PETER PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05500 CHERRY, PETER -A- PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05773 CHERRY, PETER -B- PALMER (WILCOX) ORIGIN PRODUCTION COMPANY, INC. 05673


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CHERRY, PETER ET UX PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05251 CHESSHER DARST CREEK (BUDA) ENERGY 2000, INC. 14230 CHESTER UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19265 CHEVY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17358 CHEW, H. W. LULING-BRANYON YNEW CORPORATION 00998 CHICON CREEK COMANCHE-HALSELL (6500) RIO-TEX, INC. 14898 CHILDRESS EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 16875 CHILDRESS, W. A. KAYE (NAVARRO) STRUTHOFF ENERGY, L.L.C. 02073 CHILDRESS, W. A. -A- KAYE (NAVARRO) STRUTHOFF ENERGY, L.L.C. 02397 CHILIPITIN, LTD. AUSTIN PIERCE (AUSTIN CHALK) VENADO OPERATING COMPANY LLC 17249 CHILIPITIN, LTD. BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16162 CHILIPITIN, LTD. INDIO TANKS (PEARSALL) VENADO OPERATING COMPANY LLC 17190 CHIMERA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17866 CHITTIM WILDCAT BLACKBRUSH O & G, LLC 15069 CHITTIM WILDCAT CMR ENERGY, L.P. 14746 CHITTIM CHITTIM (AUSTIN CHALK) ESCO OIL OPERATING COMPANY LLC 14297 CHITTIM CHITTIM (BUDA) ESCO OIL OPERATING COMPANY LLC 14367 CHITTIM CHITTIM (GEORGETOWN) ESCO OIL OPERATING COMPANY LLC 14268 CHITTIM "B" WILDCAT CMR ENERGY, L.P. 14689 CHITTIM HEIRS WILDCAT BLACKBRUSH O & G, LLC 18753 CHITTIM HEIRS BRISCOE RANCH (EAGLEFORD) BLACKBRUSH O & G, LLC 16989 CHITTIM HEIRS INDIO TANKS (PEARSALL) BLACKBRUSH O & G, LLC 17376 CHITTIM HEIRS PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 18588 CHITTIM RANCH WILDCAT ESCO OIL OPERATING COMPANY LLC 14221 CHITTIM RANCH 28 WILDCAT BIG SHELL OIL & GAS, INC. 16114 CHITTIM RANCH 56 CHITTIM (GEORGETOWN) BIG SHELL OIL & GAS, INC. 17398 CHITTIM RANCH 80 WILDCAT BIG SHELL OIL & GAS, INC. 17406 CHITTIM RANCH 80 M.F. JAKE LAWLESS (EDWARDS LIME) OIL-LYMPIA OIL AND GAS INC. 16011 CHITTIM-141 CHITTIM (BUDA) MAVERICK MUDLOGGING 13238 CHITTIM, ANNIE E. CHITTIM (BUDA) CONWAY ENERGY OPER SERVICES INC. 02335 CHITTIM, ANNIE E. CHITTIM,E. (GEORGETOWN) ESCO OIL OPERATING COMPANY LLC 08396 CHITTIM, MARSTELLA, MRS. CHITTIM (BUDA) CONWAY ENERGY OPER SERVICES INC. 03462 CHITTIM, N. J. SACATOSA (SAN MIGUEL #1 SAND) CONOCOPHILLIPS COMPANY 02082 CHITTIM, N.J. SACATOSA (OLMOS) CONOCOPHILLIPS COMPANY 14291 CHITTIM, N.J. SACATOSA (SAN MIGUEL #5 SD.) CONOCOPHILLIPS COMPANY 15010 CHRISTIAN-DUBOSE UNIT SATURN (NAVARRO) FAIR OIL, LTD. 10629 CHRISTIAN, BUCK NEW SWEDEN THRALL OPERATING COMPANY, INC. 01286 CHRISTIAN, HENRY E. -A- CHRISTIAN (6800) GALILEE OIL INVESTMENTS LLC 07021 CHRISTIAN,H.E. CHRISTIAN (6800) TRI-FORCE EXPLORATION, L.L.C. 17840 CHUKAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16978 CHUMCHAL-LITTLEFIELD UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16013 CHUPICK CHUPICK (OLMOS -A-) STARBURST ENERGY, INC. 11427 CHUPICK, JOHN F. -C- CHUPICK (OLMOS -A-) STARBURST ENERGY, INC. 11428 CHURCH DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17470 CHURCH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17336 CHYLEK, E.M. CHARLOTTE (NAVARRO) REC, LLC 03276 CIBILDAK FAIRFIELD SIMCO OIL, LLC 12068 CIERVO SUN T S H (OLMOS) FLETCHER OPERATING, LLC 14922 CINCO J RANCH C EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16826 CINCO J RANCH G EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16810 CINCO J RANCH J EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16931


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CINCO J. RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15504 CINCO J. RANCH LTD UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17856 CINCO RANCH COMANCHE-HALSELL (6500) SAXET PETROLEUM, INC. 15036 CINCO RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15466 CINCO RANCH D EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16267 CINCO RANCH E EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17342 CINCO RANCH H EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16266 CINCO RANCH I EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16757 CINTRA I SOMERSET PETRO LIONS, LLC 10788 CIRCLE 'T' PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15048 CIRCLE AC RANCH UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16897 CIRCLE T BRISCOE RANCH (EAGLEFORD) SAGE ENERGY COMPANY 15287 CIRCLE T RANCH UNIT A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15432 CIRCLE T UNIT A EAGLEVILLE (EAGLE FORD-1) EXCO OPERATING COMPANY, LP 15389 CITY OF GONZALES UNIT PEACH CREEK (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 08042 CLACK, JAMES PEACH CREEK (AUSTIN CHALK) ATLAS FUEL SUPPLY, LTD. 07079 CLACK, JAMES D. JR. ET AL PEACH CREEK (AUSTIN CHALK) LOW-END OIL LLC 07408 CLARK LULING-BRANYON NORTH SOUTH OIL, LLC 15992 CLARK LULING BRANYON R 40 EXC NORTH SOUTH OIL, LLC 19353 CLARK MINERVA-ROCKDALE ALLIED OPERATING TEXAS, LLC 17505 CLARK C EAGLEVILLE (EAGLE FORD-1) DEVON ENERGY PRODUCTION CO, L.P. 15702 CLARK-BOWER OIL UNIT LARREMORE BENCHMARK TEXAS PETROLEUM, LLC. 17345 CLARK, BILL /65 ACRE/ LULING-BRANYON EAGLE FORD OIL CO., INC. 01013 CLARK, MINNIE W., ETAL WINTER GARDEN, E. ( 3-D SAND) OSAGE OIL & GAS CO. 02222 CLARK, SALLIE LULING-BRANYON EAGLE FORD OIL CO., INC. 01134 CLARK, SALLIE LULING-BRANYON GINCO OPERATING CO. 01990 CLARK, SALLIE, ESTATE LULING-BRANYON AUSTIN OPERATING, LLC. 03463 CLARK, W. P. ETAL LULING-BRANYON ATKINSON, L. G., LLC 02194 CLARK, W. S. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 04014 CLAUNCH CALLIHAM ELDON OIL CO. 00162 CLAUNCH, B. C. CALLIHAM ELDON OIL CO. 00175 CLAY DAVIS UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18490 CLAYTIE PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 13475 CLAYTON, ROBERT MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 08674 CLEMENT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17252 CLEMENT, W. W. CHARLOTTE (NAVARRO) REC, LLC 03277 CLICK, ORAN PALMER (POTH-B) LA VERNIA OIL 08037 CLICK, ROGER W. PALMER (POTH-B) SYJ OIL & GAS, INC. 05289 CLICK,ROGER W. PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05683 CLIFT, BEN W. "A" LA VERNIA UPLAND OPERATING, LLC 00874 CLIFT, J. D. LA VERNIA THREE J ENERGY, INC. 00868 CLIFT, J.D. -A- LA VERNIA ALCORN ENERGY, L.L.C. 06292 CLINE SOMERSET RAINER ENERGY, INC. 11281 CLINE -D- SOMERSET PETROSAURUS, INC. 10941 CLINE, ROBERT M. SOMERSET RAINER ENERGY, INC. 10972 CLINE, ROBERT M. -A- SOMERSET RAINER ENERGY, INC. 11282 CLINE, ROBERT M. -B- SOMERSET RAINER ENERGY, INC. 11284 CLINE, ROBERT M. -E- SOMERSET RAINER ENERGY, INC. 11317 CLINE, ROBERT M. #4 SOMERSET RAINER ENERGY, INC. 11309 CLINE, ROBERT M.-C- SOMERSET RAINER ENERGY, INC. 11285 CLINGINGSMITH DALE-MCBRIDE HAZELETT OIL, INC. 04098


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CLINGINGSMITH "A" DALE-MCBRIDE HAZELETT OIL, INC. 12699 CLSCM, LTD EAGLEVILLE (EAGLE FORD-1) LEWIS PETRO PROPERTIES, INC. 18040 CLUM, SHIRLEY L. SOMERSET 3-L DRILLING 11311 CLYBURN UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18102 CLYDE PEARSALL (AUSTIN CHALK) BARBEE, R.L. OPERATING, INC. 12987 CLYDESDALE BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19296 CLYDESDALE 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18897 CLYDESDALE 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19151 CLYDESDALE 3H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19114 CME UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15500 CMWW A BRISCOE RANCH (EAGLEFORD) PROTEGE ENERGY III LLC 15262 CMWW A DIM (ALLOCATION) BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18088 CMWW B BRISCOE RANCH (EAGLEFORD) PROTEGE ENERGY III LLC 15242 CMWW B DIM (ALLOCATION) BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18089 CMWW C DIM (ALLOCATION) BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18090 CMWW D DIM (ALLOCATION) BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18091 CMWW HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19976 CMWW HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19989 CMWW HC3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19953 CMWW UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16937 CMWW UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16838 CMWW UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16522 CN UNIT EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 18999 COATES TRUST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15648 COBB LULING-BRANYON AUSTIN OPERATING, LLC. 04005 COBB LEASE UNIT #1-CARTER CHICON LAKE RLU OIL & GAS, INC. 05874 COBB LEASE UNIT #1-MENDOZA CHICON LAKE RLU OIL & GAS, INC. 06489 COBB LEASE UNIT #1-OBAYA-CLARK CHICON LAKE RLU OIL & GAS, INC. 08619 COBB LEASE UNIT #1-STEWART CHICON LAKE RLU OIL & GAS, INC. 08649 COBB, J. F. LULING-BRANYON NORTEX OIL & GAS CORP. 03456 COBB, SAM MINERVA-ROCKDALE COOMER OIL COMPANY 06648 COBRA EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15782 COBRA B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16349 COCHINA SWD BRISCOE RANCH (EAGLEFORD) CHOYA OPERATING, LLC 19028 COCHINA SWD BRISCOE RANCH (EAGLEFORD) CHOYA OPERATING, LLC 19773 COCONUT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18512 COFFIELD MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04390 COFFIELD MINERVA-ROCKDALE ENDURO OIL COMPANY INC. 12243 COFFIELD MINERVA-ROCKDALE PRICE OPERATING, LLC 11856 COFFIELD -A- MILBUR (NAVARRO) LEONARD, J. A. 04330 COFFIELD -B- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04331 COFFIELD -C- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04332 COFFIELD -G- CHEROKEE (NAVARRO) DASH PRODUCTION COMPANY, INC. 04663 COFFIELD -W- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04365 COFFIELD "A" MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04396 COFFIELD CROTCH MILBUR, N. (WILCOX 2660) THREE FORKS OPERATING CO, LLC 15015 COFFIELD ESTATE CHEROKEE (NAVARRO) VICEROY PETROLEUM, LP 09869 COFFIELD UNIT MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04296 COFFIELD-CAMP PECAN GAP (5050) BETRO, INC. 12163 COFFIELD-COOK UNIT BULLOH (NAVARRO) VICEROY PETROLEUM, LP 07129 COFFIELD-HENSLEY DIXIE (NAVARRO B) ERNEST OPERATING COMPANY 11993


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ COFFIELD-STEWART CHEROKEE (NAVARRO) DASH PRODUCTION COMPANY, INC. 12355 COFFIELD-WRIGHT UNIT BULLOH (NAVARRO) VICEROY PETROLEUM, LP 07744 COFFIELD/CULPEPPER -A- MINERVA-ROCKDALE EC OIL CO. 10172 COFFIELD, H. H. MILBUR (NAVARRO) WOOD, GEORGE 04289 COFFIELD, H. H. MILBUR, SW (WILCOX 2800) VICEROY PETROLEUM, LP 03979 COFFIELD, H. H. -A- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04299 COFFIELD, H. H. -A- MINERVA-ROCKDALE SIERRA MINERALS, INC. 01192 COFFIELD, H. H. -B- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04294 COFFIELD, H. H. -B- MINERVA-ROCKDALE SIERRA MINERALS, INC. 01238 COFFIELD, H. H., UNIT MILBUR (WILCOX 2760) SHELDON RESOURCES, L.P. 03774 COFFIELD, H.H. - HILL A MILBUR (NAVARRO) VICEROY PETROLEUM, LP 07595 COFFIELD, H.H. ESTATE MINERVA-ROCKDALE EC OIL CO. 09564 COFFIELD, J. F. MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01225 COFFIELD, MARTIN MILBUR, N. (WILCOX 2660) VICEROY PETROLEUM, LP 04429 COFFIELD, T. R. MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 08998 COFFIELD, T. R. -A- MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 09799 COFFLAND, LEWIS F. SOMERSET CALK OIL COMPANY 07998 COG PEACH CREEK (AUSTIN CHALK) NOBEL PETROLEUM USA INC. 19334 COKER, CHESNEY PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12522 COLBERT, JACK MIDWAY (2300 OIL) RED OAK OIL COMPANY, LLC 10050 COLDEWEY SUTIL (REEF) SEGURO WELL SERVICE, INC. 11954 COLDING, KATE SALT FLAT PETROSAURUS, INC. 02359 COLDIRON PECAN GAP (5050) SHELDON RESOURCES, L.P. 11989 COLDIRON, A. MILBUR, N. (WILCOX 2660) SHELDON RESOURCES, L.P. 03848 COLE, MYRTLE MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 09986 COLE, MYRTLE MARIE MINERVA-ROCKDALE C-D OIL COMPANY, INC. 10008 COLEMAN BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 16926 COLEMAN PEARSALL (AUSTIN CHALK) MOODY OIL CO. 04997 COLEMAN UNIT ZAV A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17776 COLEMAN UNIT ZAV C BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 18315 COLEMAN UNIT ZAV E BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 18314 COLEMAN ZAV B BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17910 COLEMAN ZAV D BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17448 COLLEY MINERVA-ROCKDALE C-D OIL COMPANY, INC. 09211 COLLINS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17906 COLLINS/MCDONALD MARSHA DIRNETT, INC. 13717 COLLINS, CLARENCE C. COOKSEY CRYSTAL RESOURCES, INC 01960 COLLINS, CLARENCE C. REASOR (COOKSEY SAND) CRYSTAL RESOURCES, INC 02081 COLT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17858 COLUNGA SOMERSET TEXAS SECONDARY OIL CORPORATION 10747 COLWELL-COOK 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16860 COLWELL-COOK 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16861 COLWELL-RAWLS 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16990 COLWELL-RAWLS 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16863 COLWELL, DOYLE JAYHAWK (AUSTIN CHALK) CHALLENGER OIL INC 05201 COMAL UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18606 COMANCHE WILDCAT CMR ENERGY, L.P. 14748 COMANCHE BRISCOE RANCH (EAGLEFORD) EL TORO RESOURCES LLC 19224 COMANCHE LORENZO (AUSTIN CHALK) EL TORO RESOURCES LLC 19142 COMANCHE RANCH WILDCAT EL TORO RESOURCES LLC 14490 COMANCHE RANCH COMANCHE-HALSELL (6500) CMR ENERGY, L.P. 14381


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------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ COMANCHE RANCH PENA CREEK (GEORGETOWN) EL TORO RESOURCES LLC 14849 COMANCHE SM HUGH FITZSIMMONS (SAN MIGUEL) EL TORO RESOURCES LLC 18953 COMET UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18684 COMMERCE UNIT ZAV B BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19916 CONCORD OIL CO. WILDCAT MIDWAY DRILLING CO. 17362 CONE-DUBOSE UNIT CHRISTIAN (6800) LONESTAR OPERATING, LLC 13216 CONLEY SALT FLAT CASTILLO OIL COMPANY LLC 08511 CONLEY SALT FLAT, WEST EAGLE FORD OIL CO., INC. 08805 CONLEY SALT FLAT, WEST S & T SALVAGE 07959 CONLEY -C- SALT FLAT CASTILLO OIL COMPANY LLC 12157 CONLEY -CC- SALT FLAT CASTILLO OIL COMPANY LLC 12158 CONLEY "B" SALT FLAT CASTILLO OIL COMPANY LLC 12156 CONLEY HICKMAN SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15695 CONLEY UNIT SALT FLAT SHWJ OIL & GAS CO., INC. 10558 CONLEY/ARCO DUNLAP S & T SALVAGE 10385 CONLEY/ARCO #7 DUNLAP S & T SALVAGE 11470 CONLEY/ARCO 3&4 DUNLAP S & T SALVAGE 11735 CONLEY, LILLIAN DUNLAP COLBY PRODUCTION RESOURCES, LLC 03769 CONLEY, O. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01510 CONN-NOAH UNIT GOOD LUCK (SAN MIGUEL) ARRCO OPERATING, LLC - 04184 CONN, M. W. GOOD LUCK (SAN MIGUEL) TRACKER OIL & GAS, INC. 04190 CONNELL-WRIGHT A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18991 CONNELL-WRIGHT B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18989 CONNOLLY, JETT TENNEY CREEK HAZELETT LEASE SERVICE, INC. 03231 CONRAD, ALEX J. FAIRFIELD GINCO OPERATING CO. 08323 CONSTANZO FAIRFIELD GREAT PLAINS RESOURCES, INC. 11781 CONSTANZO, TONY FAIRFIELD SONORA OIL COMPANY 12357 CONTINENTAL PEARSALL (AUSTIN CHALK) LONE STAR OPERATING COMPANY 12816 COOK BULLOH (NAVARRO) VICEROY PETROLEUM, LP 08198 COOK EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16094 COOK PEARSALL (AUSTIN CHALK) TEXOKAN OPERATING, INC. 12611 COOK PILGRIM (AUSTIN CHALK) EHNOT ENGINEERING COMPANY 13452 COOK E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19787 COOK F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19795 COOK G EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19788 COOK H EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19789 COOK UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15797 COOK UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15762 COOK UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18247 COOK-CHANDLER EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16737 COOK-HENRY EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16938 COOK-MANFORD TRUST EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17804 COOK-PARITY MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 09671 COOK-PRICE MANFORD 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17971 COOK-PRICE MANFORD 1 SMILEY (AUSTIN CHALK) AUTERRA OPERATING, LLC 17982 COOK-TEXSTAR MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 09670 COOK, E. M. MINERVA-ROCKDALE TT OPERATING, LLC 03465 COOK, L.D. MAG (AUSTIN CHALK) SHIDLER, MARK L., INC. 12969 COOK, ZELDA WILDCAT WINCHESTER OIL & GAS LLC 19066 COOK, ZELDA MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 01253 COOKE TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 14680


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ COOKE TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 15103 COOKE A TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 15668 COOKE, C. N. COOKE RANCH (OLMOS) LEWIS PETRO PROPERTIES, INC. 14780 COOKE, C. N. TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 14941 COOKE, C.N. "A" COOKE (WILCOX 5130, WEST) TRACKER OIL & GAS, INC. 05971 COOKE, C.N. "C" COOKE (WILCOX 4100, W. RES. 2) TRACKER OIL & GAS, INC. 06072 COOKE, ETHYL P. COOKE (WILCOX 4300) TARINA OIL COMPANY 08059 COOKE, ETHYL P. G.U. 'A' EAGLEVILLE (EAGLE FORD-1) LEWIS PETRO PROPERTIES, INC. 18714 COOKE, GEORGE H. SALT FLAT B. J. P. OPERATING 04605 COOKE, TRAVIS C. -A- SALT FLAT WTXR OPERATING (TEXAS), INC. 04922 COOKE, TRAVIS C. "B" SALT FLAT WTXR OPERATING (TEXAS), INC. 05710 COOKE, TRAVIS C. ET AL SALT FLAT WTXR OPERATING (TEXAS), INC. 02579 COONS, ALBERT O. COOKSEY B W M PRODUCING CO. 00314 COOPER MINERVA-ROCKDALE SIERRA MINERALS, INC. 01246 COOPER SALT FLAT, WEST IAO ENERGY, LLC 06720 COOPER -A- SOMERSET GREAT PLAINS RESOURCES, INC. 11671 COOPER -B- SOMERSET CRYSTAL RESOURCES, INC 10981 COOPER -F- SOMERSET GREAT PLAINS RESOURCES, INC. 10983 COOPER -I- SOMERSET GREAT PLAINS RESOURCES, INC. 11131 COOPER -K- SOMERSET GREAT PLAINS RESOURCES, INC. 10986 COOPER -N- SOMERSET GREAT PLAINS RESOURCES, INC. 11364 COOPER -O- SOMERSET GREAT PLAINS RESOURCES, INC. 11366 COOPER -P- SOMERSET GREAT PLAINS RESOURCES, INC. 10987 COOPER -P-2 SOMERSET GREAT PLAINS RESOURCES, INC. 11537 COOPER -P-3 SOMERSET GREAT PLAINS RESOURCES, INC. 11538 COOPER -T- SOMERSET GREAT PLAINS RESOURCES, INC. 11073 COOPER -Y- SOMERSET GREAT PLAINS RESOURCES, INC. 10989 COOPER UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 06418 COOPER W SOMERSET GREAT PLAINS RESOURCES, INC. 11807 COOPER-J- SOMERSET CRYSTAL RESOURCES, INC 10985 COOPWOOD SALT FLAT W.W. ENERGY 10699 COPELAND KARNES FIRST SHOT (AUSTIN CHALK) LONESTAR OPERATING, LLC 13598 COPELAND UNIT SALT FLAT OFFSPRING WELL SALVAGE 03071 COPELAND-GSI #1H FIRST SHOT (AUSTIN CHALK) MILESTONE SMILEY, LLC 12758 COPELAND, C. FIRST SHOT (AUSTIN CHALK) MAGNOLIA OIL & GAS OPERATING LLC 12690 COPELAND, R. P. "A" BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 15107 COPPEDGE PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 16443 COPPS ET AL EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15352 COPPS ET AL #1 PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 13313 COPPS LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15915 COQUAT EZZELL SAN CAJO OIL COMPANY 00568 CORA MALONE SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15469 CORBIN PEARSALL (AUSTIN CHALK) MUELLER EXPLORATION, INC. 15260 CORBIN PEARSALL (BUDA, S.) MUELLER EXPLORATION, INC. 17525 CORLEY DARST CREEK (BUDA) ENERGY 2000, INC. 14229 CORLEY DARST CREEK (BUDA) GINCO OPERATING CO. 03710 CORNELIUS, P. F. JR. ZION HILL (AUSTIN CHALK) ZION OIL & GAS INC. 12697 CORNER S RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17210 CORNER S RANCH MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16040 CORNER S RANCH WEST MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17467 CORNETT ELAINE, W. (SAN MIGUEL) CML EXPLORATION, LLC 19882


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CORNETT PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17130 CORNFIELD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15934 CORONA LA VERNIA FUEGO ENERGY, LLC 06751 CORONA, JOHN MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 11408 CORPORA CHEROKEE (EAGLE FORD) CXL ENERGY LLC 18272 CORPORA CHEROKEE (NAVARRO) CXL ENERGY LLC 18902 CORSAIR 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18573 CORTEZ 'C' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16608 CORTEZ 'D' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16610 CORTEZ 'E' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16800 CORTEZ 'F' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16804 CORTEZ 'G' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16812 CORTEZ "A" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15834 CORTEZ "B" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15832 CORVETTE A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17018 CORVETTE C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16641 COSEY-DORN -A- LULING-BRANYON SOTOL ENERGY, INC. 07057 COSEY-DORN -B- LULING-BRANYON SOTOL ENERGY, INC. 07273 COSTATEX FEE LULING-BRANYON CLICK ENERGY COMPANY 01121 COTTEN CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 04287 COTULLA EAST SWD EAGLEVILLE (EAGLE FORD-1) NGL WATERSOLUTIONS EAGLEFORD,LLC 18597 COTULLA EAST UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18534 COTULLA SWD EAGLEVILLE (EAGLE FORD-1) NGL WATERSOLUTIONS EAGLEFORD,LLC 16676 COUES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17410 COULTER -B- MINERVA-ROCKDALE RED OAK OIL COMPANY, LLC 01182 COULTER -P- MINERVA-ROCKDALE VICEROY PETROLEUM, LP 01267 COUNTISS DAN COUNTISS (WRIGHT SAND) HAWTHORN ENERGY PARTNERS, LLC 14323 COUNTISS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15787 COUNTISS SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14533 COUNTISS PS1 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18939 COUNTISS PS2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18938 COUNTISS PS3 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18937 COUNTISS PS4 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18940 COUNTISS UNIT I EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16290 COUNTISS UNIT II EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16433 COUNTISS UNIT III EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17159 COURAND, JOSEPH A. PLEASANTON, S. (CARRIZO SAND) GUINN OPERATING COMPANY, LLC 01386 COUSER, J.A. KYOTE GINCO OPERATING CO. 09562 COUSINS COUSINS (SLICK-WILCOX) MAVERICK ENERGY & DEV. CORP. 14284 COVELL, MATILDA H., ETAL GAS RIDGE R.D. OIL COMPANY 00638 COVER LA VERNIA TANGLEHEAD OPERATING, LLC 06265 COVERT HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 19146 COVERT PENA CREEK (SAN MIGUEL 3RD) ENDEAVOR NATURAL GAS, LP 19917 COVERT A PENA CREEK (SAN MIGUEL 3RD) ENDEAVOR NATURAL GAS, LP 19881 COVERT, F. M. NCT A-4 PENA CREEK (SAN MIGUEL 2ND) 3-G OPERATING COMPANY 04618 COVERT, F. M. NCT A-4 PENA CREEK (SAN MIGUEL 3RD) 3-G OPERATING COMPANY 04544 COVERT, F. M. NCT B-4 PENA CREEK (SAN MIGUEL 3RD) 3-G OPERATING COMPANY 04414 COVERT, F.M. MCT B-3 PENA CREEK (SAN MIGUEL 3RD) 3-G OPERATING COMPANY 04545 COVEY CHAPEL PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 07331 COWAN, C. M. KAYE (NAVARRO) PRODUCTION RESOURCES, INC. 00773 COWARD, H. H. IMOGENE (BUDA) PEARL, BILL H. PRODUCTIONS, INC. 05618


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ COWARD, H. H. -B- /ACT. #1/ IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 00690 COWARD, H. H. -B- /ACT. #2/ IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 00691 COWARD, H. H., -B- ACC. #2 IMOGENE, SOUTHEAST BRYMER CONTRACTING INCORPORATED 02892 COWARD, H. H., ACT. #1 IMOGENE (ESCONDIDO A) PEARL, BILL H. PRODUCTIONS, INC. 03925 COWARD, H.H. IMOGENE (ESCONDIDO B) PEARL, BILL H. PRODUCTIONS, INC. 07860 COWARD, H.H. A/C 4 IMOGENE PEARL, BILL H. PRODUCTIONS, INC. 06918 COWDEN, W. L. CHARLOTTE, NORTH 3-L DRILLING 04054 COWEY, J. M. GIDDINGS (AUSTIN CHALK-1) ATLAS FUEL SUPPLY, LTD. 07403 COX EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15496 COX SALT FLAT EAGLE FORD OIL CO., INC. 06469 COX, L. L. LULING-BRANYON EAGLE FORD OIL CO., INC. 01139 CPK UNIT EAGLEVILLE (EAGLE FORD-1) DIRNETT, INC. 19191 CR RANCH UNIT LULING BRANYON R 40 EXC NORTH SOUTH OIL, LLC 19333 CR 298 UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17473 CRABB RANCH EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 15770 CRABB RANCH A BUDA CLAY (BUDA) LONESTAR OPERATING, LLC 18634 CRAIG EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16101 CRANDALL UNIT SALT FLAT BAIR'S LEASE SERVICE, INC. 06872 CRAVEN EL VIEJO (SERPENTINE) MEB, LLC 18720 CRAWFORD PEARSALL (AUSTIN CHALK) ENCINO OPERATING COMPANY, INC. 12882 CRAWFORD RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16817 CRAWFORD RANCH B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17540 CRAWFORD RANCH C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17542 CRAWFORD, DAVID MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 12148 CRAWFORD, GLADYS DALE-MCBRIDE HAZELETT OIL, INC. 13577 CRAWFORD, LEONARD FAIRFIELD PETRO LIONS, LLC 07375 CREE EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 17449 CREEK EAGLEVILLE (EAGLE FORD-1) BOSQUE DISPOSAL SYSTEMS, LLC 17881 CREEK FAIRFIELD CALK, ROGER D. 07695 CRENSHAW 27 AC. LULING-BRANYON AUSTIN OPERATING, LLC. 04003 CRENSHAW 37 AC. LULING-BRANYON AUSTIN OPERATING, LLC. 04027 CRENSHAW, L. LYTTON SPRINGS GUNN, H. L. OIL CO. 05758 CRIMSON ALLOCATION #1 EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19533 CRIMSON ALLOCATION #2 EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19534 CRIMSON ALLOCATION #3 EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19535 CRIMSON ALLOCATION #5 EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19536 CRIMSON ALLOCATION #6 EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19874 CRIMSON ALLOCATION 4 EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19539 CRISP, WILLARD E. 26 ATLEE (OLMOS) LEWIS PETRO PROPERTIES, INC. 15041 CRISWELL-PAVELKA LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16238 CROC UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18032 CROCE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17972 CROMWELL WILDCAT CHEYENNE PETROLEUM COMPANY 15859 CROMWELL EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15595 CROSBY UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 19158 CROSS S PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16613 CROSS-SCHULZE UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 13859 CROSSHAIR UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16638 CROSSHAIR UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15984 CROSSHAIR UNIT III DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16244 CROUCH WILDCAT BENCHMARK TEXAS PETROLEUM, LLC. 17133


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CROUCH BIG FOOT BENCHMARK TEXAS PETROLEUM, LLC. 16372 CROUCH CROWN, E. (NAVARRO) RICKAWAY ENERGY, CORP. 10028 CROUCH, TOMMY LEMING (2934 SAND) STRATA STAR PETROLEUM CORP. 09061 CROW HC1 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19413 CROW HC2 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19381 CROW HC3 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19396 CROW HC4 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19397 CROW HC5 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19379 CROW HC6 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19380 CROW UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16803 CROW UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16734 CROW UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16776 CROW UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16659 CROW UNIT V LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16645 CROWTHER CLOETER (WILCOX 5800) TARE RESOURCES, LLC 14887 CROWTHER KYOTE CREATIVE OIL AND GAS OP II, LLC 10368 CROZIER WILLIAMSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16122 CRUNK-CASKEY UNIT CHRISTIAN (6800) PONTIAC OIL, INC. 12803 CRUZ, LEO SOMERSET DRACHEN OIL COMPANY 06610 CST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17160 CT PEARSALL (BUDA, S.) CML EXPLORATION, LLC 19894 CUDE, W. T. BUCHANAN W.W. ENERGY 00157 CUDE, W. T. -A- BUCHANAN ENHANCED RS, INC. 00141 CUDE, W. T. -B- BUCHANAN ENHANCED RS, INC. 00142 CUDE, W. T. -C- BUCHANAN ENHANCED RS, INC. 00143 CUDE, W. T. -D- BUCHANAN ENHANCED RS, INC. 00144 CUDE, W.T. BUCHANAN ENHANCED RS, INC. 04907 CUELLAR EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17015 CUEVAS-MCNAB FAIRFIELD OILEX INT'L INVESTMENTS, INC. 09782 CULPEPPER EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15996 CULPEPPER MINERVA-ROCKDALE CAN'T COMPLAIN OPERATING CO. 17647 CULPEPPER UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 15742 CULPEPPER UNIT NO. 2 EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 17874 CULPEPPER UNIT NO. 3 EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 17870 CULPEPPER 1H UNIT PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 16214 CULPEPPER 2H UNIT PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 16115 CULPEPPER-A- SMILEY, SE (AUSTIN CHALK) WILSON, BILLY R. 07313 CULPEPPER-COFFIELD MINERVA-ROCKDALE PENROD OIL COMPANY OF TEXAS, INC 09250 CULPEPPER, CURTIS L. PEARSALL (AUSTIN CHALK) WOOLDRIDGE OIL & GAS 05104 CUMBERLAND FAIRFIELD CUMBERLAND, CHARLIE 08778 CUMMINGS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19244 CUMPIAN, A. G. BIG FOOT STARBURST ENERGY, INC. 02441 CUNDIEFF HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 18998 CUNDIEFF A HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 19723 CUNNINGHAM FAIRFIELD CALK, ROGER D. 07982 CUNNINGHAM GIDDINGS (AUSTIN CHALK-1) TREADSTONE ENERGY PRTNR OP, LLC 14028 CUNNINGHAM UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 10936 CUNNINGHAM, O. J. MINERVA-ROCKDALE NORTHLAND PETROLEUM, LLC 09907 CURTIS A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18631 CURTIS B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18626 CUSACK FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 14147


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CUSACK CLAMPIT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15258 CUSACK CLAMPIT UNIT SMILEY (AUSTIN CHALK) EOG RESOURCES, INC. 18867 CUSACK RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15368 CUTTER CREEK EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15518 CUTTER CREEK 'A' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16281 CUTTER CREEK 'B' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16282 CW DALCAN MANAGEMENT SVCS, LTD FENTRESS (1750) CW DALCAN MANAGEMENT SVCS, LTD. 18915 CYCLONE EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 18831 CYCLONE PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 12904 CYCLONE PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 13856 CYCLONE 'D-M' UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19431 CYCLONE A EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19048 CYCLONE B EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19043 CYCLONE E UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19155 CYCLONE F UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19154 C4 RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16002 D H UNIT INDIO TANKS (PEARSALL) MURPHY EXPL. & PROD. CO. - USA 17179 D. FOREMAN UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15726 D.G. TILLER LULING-BRANYON EAGLE FORD OIL CO., INC. 17930 D.G. TILLER SALT FLAT (EDWARDS) REO OPERATING LLC 15807 D.G. TILLER -A- SALT FLAT (EDWARDS) PRO FIELD SERVICES, INC. 19276 D.L. RANCH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16356 D&L OIL PRODUCERS CO. LA VERNIA D. & L. OIL PRODUCING CO. 08043 DAILEY SALT FLAT B & S OPERATING COMPANY LLC 18080 DAISY BUCHANAN MEB, LLC 13762 DALE PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18382 DALE LIMESTONE UNIT DALE-MCBRIDE EXOIL RESOURCES, INC. 04380 DALE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18175 DALKOWITZ, CYRIL CROWN, E. (NAVARRO) 3-L DRILLING 00337 DALL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17880 DALROS-HJH FAIRFIELD GINCO OPERATING CO. 12093 DALROS, DON E. FAIRFIELD SONORA OIL COMPANY 05426 DALTREY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17059 DALY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17847 DAND AND CO UNIT A LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16143 DAND AND CO UNIT I B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15974 DAND AND CO UNIT II B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16157 DANDO LA VERNIA DOEGE, DONALD 07213 DANNELLY DANNELLY (AUSTIN CHALK) JOE R. CHEATHAM OIL COMPANY 10377 DANNELLY, N. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 11737 DARBY FEE MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 13723 DARBY, LEE ROY MIDWAY (2300 OIL) SHELDON RESOURCES, L.P. 12145 DAUCHY WEST FENTRESS (1750) BOB-KAT OIL CO. 12056 DAUNTLESS 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19124 DAUNTLESS 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19128 DAVENPORT SALT FLAT NORTH AMERICAN DRILLING CORP 03636 DAVENPORT NORTH PASTURE SALT FLAT JAD OIL, INC. 09328 DAVENPORT UNIT NIXON GALILEE OIL INVESTMENTS LLC 13503 DAVENPORT, FRED BENTON CITY (ANACACHO) LONGSHOT ENERGY LLC 15279 DAVID HOLDSWORTH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15619 DAVID RIHN, JR. FAIRFIELD OVERSTREET, JAMIE L 02471


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DAVIDSON BEAR CREEK AMERICAN EAGLE RESOURCES, INC. 03184 DAVIDSON, D. A. PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12844 DAVIDSON, G. BIG FOOT CREATIVE OIL AND GAS OP II, LLC 00113 DAVIDSON, G.O. KYOTE CREATIVE OIL AND GAS OP II, LLC 11056 DAVIDSON, GAYLON O. KYOTE GINCO OPERATING CO. 10521 DAVIES, S. B. PEARSALL (AUSTIN CHALK) MAVERICK ENERGY GROUP, INC. 04744 DAVIES, S.B. ET AL PEARSALL (NAVARRO SAND) MAVERICK ENERGY GROUP, INC. 07022 DAVILLA, JAMES, ETAL, UNIT 1 SALT FLAT KIDD PRODUCTION CO. 02977 DAVIS C.J.P. (REEF) CRYSTAL RESOURCES, INC 10544 DAVIS LINDSEY, S.E.(NAVARRO) CHRISTILIN PETROLEUM CORPORATION 09803 DAVIS - MCCRARY TRUST WILDCAT QUORUM ENERGY COMPANY 15877 DAVIS -A- SALT FLAT B. J. P. OPERATING 01457 DAVIS -B- SALT FLAT B. J. P. OPERATING 01458 DAVIS A EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17042 DAVIS B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17088 DAVIS B - WILSON SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15350 DAVIS EAST UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 19948 DAVIS HORD "77" GULFSTAR (CANYON) GULFSTAR PROPERTIES, INC. 15085 DAVIS RANCH EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 16816 DAVIS UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 19073 DAVIS UNIT EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 18049 DAVIS UNIT WSW FIRST SHOT (AUSTIN CHALK) EARTHSTONE OPERATING, LLC 19113 DAVIS-MCCRARY PROPERTY TRUST EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 15414 DAVIS/SUNSHINE SOMERSET RAMPAGE EXPLORATION, INC. 08457 DAVIS, EUREL ETAL LYTTON SPRINGS MULTIPAY ENERGY, INC. 05879 DAVIS, J. J. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01511 DAVIS, J. J. EST. SALT FLAT PRIORITY OIL COMPANY LLC 01477 DAVIS, J. J. ESTATE SALT FLAT (EDWARDS) PRIORITY OIL COMPANY LLC 15177 DAVIS, J. J. ESTATE -A- SALT FLAT (EDWARDS) INDEPENDENCE OIL & GAS, LLC 19896 DAVIS, M. M. -B- CHARLOTTE (NAVARRO) REC, LLC 03278 DAVIS, M.M. CHARLOTTE (NAVARRO) BLEDSOE, R.K. TRUST OIL OPERATOR 05337 DAVIS, MILTON C.J.P. (REEF) RAMPAGE EXPLORATION, INC. 09476 DAVIS, MILTON -B- CROWN, E. (NAVARRO) MAZCO ENERGY LLC 10572 DAVIS, RUTH PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12432 DAVIS, RUTH DAKIN PEARSALL (AUSTIN CHALK) BLOCK "T" PETROLEUM, INC. 06958 DAVIS, SADIE SALT FLAT BURRIS OPERATING CO. 09697 DAVIS, W. F. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01461 DAVIS, W. F. SALT FLAT JAVELINA OIL & GAS CO. 02937 DAVIS, W. F. -C- SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01512 DAVIS, W. F., -B- SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 03832 DAVIS, W. T. SPILLER DELRAY OIL, INC. 01679 DAVIS, WESTON, UNIT SALT FLAT BAIR'S LEASE SERVICE, INC. 02950 DAWE -B- PILGRIM (AUSTIN CHALK) J.W. SERVICE COMPANY 13450 DAWLEAN RICHARDSON EAGLEVILLE (EAGLE FORD-1) ROSEWOOD RESOURCES, INC. 19842 DAY RANCH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17262 DAY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18020 DAY, DAN ET AL LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 10278 DE LA GARZA EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16326 DEAGEN, BILL & SONS LTD -B- KAYE (NAVARRO) TANGLEHEAD OPERATING, LLC 07302 DEAR DALE-MCBRIDE MEB, LLC 18104 DEATLEY-GRIFFIN UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15660


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DEATLEY-HOLLUB UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15673 DEATLEY-MAY UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15637 DEATLEY-MAY UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15681 DEBBIE MORRIS EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17655 DEDMAN BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 15793 DELAFUENTE-TRENDA SOMERSET GINCO OPERATING CO. 11903 DELAO, OPHELIA FAIRFIELD CALK, ROGER D. 07669 DELEON-BOYD BEAR CREEK RED BIRD PETROLEUM CORP. 11919 DEMMER, H. C. FIRST SHOT (AUSTIN CHALK) GENESIS WELL SERVICE 13063 DEMPSEY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17353 DENISON SALT FLAT OCCIDENTAL ENERGY COMPANY, INC. 07647 DENISON, J.E. FAIRFIELD OILEX INT'L INVESTMENTS, INC. 08523 DENMAN -A- DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02736 DENMAN -A- DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02784 DENMAN -C- DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02737 DENMAN -C- DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02785 DENMAN C 3H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14683 DENMAN C 2H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14697 DENMAN, C 1H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14657 DENMAN, DAN J. DARST CREEK (BUDA) DELRAY OIL, INC. 02949 DENMAN, DAN J., -B- DARST CREEK (BUDA) DELRAY OIL, INC. 02809 DENMAN, G. M. DARST CREEK (BUDA) DJ EXPLORATION, INC. 02822 DENMAN, G.M. JR. DARST CREEK (BUDA) GARRISON LTD. 07452 DENMAN, GILBERT M., JR., ET AL DARST CREEK (BUDA) DELRAY OIL, INC. 03907 DENMAN, L. G. EST. DARST CREEK (BUDA) DELRAY OIL, INC. 02815 DENMAN,DAN J. DARST CREEK (EDWARDS) DELRAY OIL, INC. 05630 DENNING, GEO. A. LA VERNIA CALTEX ENERGY CO. 05992 DENNING, H. F. ACLETO CREEK (POTH SAND) HUNT, W. F. 00001 DENNIS DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16452 DENNIS UNIT B DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16121 DENNIS UNIT D DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16472 DENNIS-DUBE JEANIE (SERPENTINE) ATLAS OPERATING LLC 04784 DENNY, FRANK CHICON LAKE RLU OIL & GAS, INC. 06941 DERBY RANCH PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 17338 DERBY SOUTH C EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19955 DERBY SOUTH H EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19960 DERWARD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17125 DESMUKE -Z- CROWN, E. (NAVARRO) JB OIL & GAS WELL SERVICE 10573 DESOTO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17367 DESPAIN, GENE LA VERNIA TEXAS SECONDARY OIL CORPORATION 05959 DESPAIN, I. DALE-MCBRIDE U-P ENGINEERING 06164 DESPAIN, W. E. LA VERNIA W.W. ENERGY 01821 DEVERS SOMERSET SEAGULL OPERATING CO., INC. 11237 DEVIL'S WATERHOLE UNIT DEVILS WATER HOLE (7000) RAMTEX ENERGY LLC 03996 DEVINEY, ADDIS LULING-BRANYON GINCO OPERATING CO. 02532 DHARMA UNIT JOURDANTON (BUDA) EOG RESOURCES, INC. 18522 DIAL PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17690 DIAMOND H RANCH BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 15205 DIAMOND H STATE BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 15206 DIAMOND H STATE UNIT A BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 17654 DIAMOND H STATE UNIT B BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 18802


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DIAMOND H STATE UNIT D BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19494 DIAMOND HEAD -A- C.J.P. (REEF) CALK, ROGER D. 09729 DIAMOND HEAD -B- C.J.P. (REEF) CALK, ROGER D. 09984 DIAMOND J UNIT A MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17354 DIAMONDBACK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17821 DIAS, LUCILLE CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 06429 DIAZ ESPADA MISSION KERR, JONATHAN ALLAN 00564 DIAZ UNIT MONKSFIELD (350 SAND) ROOT DRILLING COMPANY 11826 DIAZ, P.A. FAIRFIELD CLOVER OIL & GAS, INC. 08594 DICKE DICKE (LOWER WRIGHT) ORO RESOURCES, LLC 14472 DICKE DICKE (WALES SAND) ORO RESOURCES, LLC 14639 DICKE A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17767 DICKE B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17915 DICKE C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17763 DICKENS SOMERSET SEEKER OIL COMPANY, INCORPORATED 11259 DICKENS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18066 DICKERSON, CLAUDE SALT FLAT FLAMINGO OIL & GAS 02126 DICKERSON, WALTER E. ESTATE BIG FOOT WSM 08092 DICKIE, F. H. DICKE (WRIGHT SAND) ORO RESOURCES, LLC 14492 DICKIE, F. H. WRIGHT HOOK (WALES SAND) ORO RESOURCES, LLC 14647 DICKINSON A.W.P. (OLMOS) SUTTON PRODUCING CORP. 09302 DICKINSON B A.W.P. (OLMOS) SUTTON PRODUCING CORP. 18001 DICKINSON UNIT F EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15676 DICKINSON, J.H. A.W.P. (OLMOS) SUTTON PRODUCING CORP. 17501 DICKSON PEARSALL (AUSTIN CHALK) STONEGATE OPERATORS, INC. 05545 DICKSON-ALLEN EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15521 DICKSON, R.D. PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05465 DIECKOW, C. JR. LA VERNIA 3-L DRILLING 05761 DIESTE UNIT EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 17853 DIETRICH NIXON (BUDA) HUNTWOOD RESOURCES, LLC 18352 DIETZE UNIT A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15872 DIKES ESTATE PILGRIM (AUSTIN CHALK) BEDFORD OIL & GAS, INC. 13395 DILLARD PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18538 DILLEY UNIT -A- PEARSALL (AUSTIN CHALK) 2 D OIL & GAS LLC 12601 DILLEY UNIT "C" PEARSALL (AUSTIN CHALK) RCLJ CONSTRUCTION, INC. 14782 DILLEY UNIT "C" PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12988 DILLEY-SWD PEARSALL (AUSTIN CHALK) TREE OPERATING, LLC 17914 DILLON-HALL-A- SALT FLAT J & B ENERGY CO.,INC. 08174 DILLON-HALL-B- SALT FLAT PETROSAURUS, INC. 09761 DILLON, B. W. -A- CATARINA, E. (OLMOS A) L & J EXPLORATION, LLC 04811 DILWORTH DILWORTH (CARRIZO) HUGHES, DAN A. COMPANY, L.P. 14012 DILWORTH EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 16928 DILWORTH RANCH EAGLEVILLE (EAGLE FORD-1) ROSEWOOD RESOURCES, INC. 19732 DILWORTH, FRANCES EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15438 DILWORTH, J.C. ET AL DILWORTH RANCH (MULA) WALKING X OIL CO. 08075 DIMMIT S-4 PEARSALL (AUSTIN CHALK) KILLAM OIL CO., LTD. 15634 DIMMIT WOODS PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13274 DIMMIT-WOOD PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 14562 DIMMIT-WOOD UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14596 DINGES BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13588 DINGES BUCHANAN AUSTIN OPERATING, LLC. 06974


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DINGES BUCHANAN TRINIDAD PETROLEUM, INC. 11608 DINGES A-1 BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13819 DINGES-B- BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13658 DINGES, M. Y. DALE-MCBRIDE C. JACKSON CLARK INVESTMENTS 04106 DINGES, M.C. BUCHANAN FOYORO ENERGY, LLC 13459 DINGES, M.Y. -A- DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 11927 DINGES, W. E. BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13550 DINGES, W. E. BUCHANAN AUSTIN OPERATING, LLC. 01899 DINGES, W. E. -A- BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13998 DINGES, W. E. -C- BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13999 DINGES, W.E. -D- BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13601 DINGES, W.E. -F- BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 14003 DINGES, W.E. 'Z' BATEMAN (AUSTIN CHALK) AUSTIN OPERATING, LLC. 13457 DINSMOOR IMOGENE, EAST (EDWARDS LIME) CHAPARRAL NATURAL RESOURCES,INC. 15021 DINSMOOR -B- DINSMOOR (CARRIZO) BAY ROCK OPERATING COMPANY 00511 DINSMOOR, NELLE DINSMOOR (CARRIZO) BAY ROCK OPERATING COMPANY 00510 DINSMOOR, NELLE DINSMOOR (QUEEN CITY) BAY ROCK OPERATING COMPANY 00512 DISCHER, H.A. A.W.P. (OLMOS) XTO ENERGY INC. 09153 DISCHER, H.A. -A- A.W.P. (OLMOS) XTO ENERGY INC. 09507 DISMUKES SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 07958 DISMUKES "A" SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 06449 DISMUKES, E. L. ELAINE (5100) WHITE MARLIN OPERATING CO, LLC 14448 DISMUKES, E.L. ELAINE (OLMOS) WHITE MARLIN OPERATING CO, LLC 03357 DISTRICT SHINER SWD EAGLEVILLE (EAGLE FORD-1) NGL WATERSOLUTIONS EAGLEFORD,LLC 18206 DITTMAR & HASKELL LINNE (POTH -A- SAND) GAUNTT, INC. 00959 DIVIN/WILHITE LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 08241 DIVIN, L. V. LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 10528 DIVIN, L.V. #5 LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 10367 DIVIN, L.V. ET AL -A- LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 08257 DIVIN, MICHAEL -A- LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 08276 DIVIN, TONY LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 08266 DIVIN, TONY -A- LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 06502 DIVIN, TONY POOL UNIT LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 07614 DIVIN,L.V./KELPETRO LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 07947 DIX & MCKEAN (CHEVRON) DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02723 DIX & MCKEAN C DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02777 DIX -B- DARST CREEK (BUDA) YORK E & P, LLC 02715 DIX -D- DARST CREEK (BUDA) GINCO OPERATING CO. 02714 DIX B DARST CREEK (BUDA) ENERGY 2000, INC. 14226 DIX C DARST CREEK (BUDA) ENERGY 2000, INC. 14227 DIX MCKEAN B 2H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14498 DIX MCKEAN B 7H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 18254 DIX-MCKEAN "B" UNIT DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02745 DIX-MCKEAN "B" UNIT DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02788 DIX, THOMAS (CHEVRON) DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02724 DIX, THOMAS 'A' DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02750 DIX, THOMAS 'A' DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02791 DIX, THOMAS C DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02778 DK EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17293 DK SOUTH EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 18813 DK UNIT EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 18277


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18329 DOB JAMES SOMERSET RAOL COMPANY, THE 01604 DOBBY A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19483 DOBBY B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19577 DOBBY C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19578 DOBBY D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19575 DOBBY E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19574 DOBBY F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19592 DOBIE MARTIN UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 17131 DODSON SAND PILE (AUSTIN CHALK) RIO-TEX, INC. 15143 DOEGE, A. LA VERNIA DONOCO OIL COMPANY 02320 DOEGE, ALBERT LA VERNIA AGAPE ENERGY INC. 04554 DOEGE, ALFRED LA VERNIA LA VERNIA OIL 00850 DOEGE, EDWARD LA VERNIA DONOCO OIL COMPANY 12176 DOEGE, EMIL LA VERNIA UPLAND OPERATING, LLC 05937 DOEGE, EMIL -A- LA VERNIA UPLAND OPERATING, LLC 05940 DOEGE, EMIL -B- LA VERNIA SOURCE PETROLEUM INC. 02436 DOEGE, EMIL -B- LA VERNIA UPLAND OPERATING, LLC 06216 DOEGE, ERNEST LA VERNIA J.A.G. OIL & GAS 07211 DOEGE, HARRY LA VERNIA J.A.G. OIL & GAS 02202 DOEGE, HERMAN LA VERNIA DONOCO OIL COMPANY 11383 DOEGE, RICHARD LA VERNIA DOEGE, DONALD 02875 DOEGE, RICHARD LA VERNIA DONOCO OIL COMPANY 00836 DOEGE, WARD LA VERNIA LEVANT ENERGY LLC 08857 DOEGE, WILBERT LA VERNIA DOEGE, DONALD 07212 DOLAN, EMILY WINTER GARDEN (OLMOS) DOUBLE EAGLE PETROLEUM CORP 05443 DOLLARHIDE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17468 DOLLINGER THRALL THRALL OPERATING COMPANY, INC. 01735 DOMINGUEZ OIL UNIT CROWN, E. (NAVARRO) PARK AVENUE RESOURCES, INC. 11527 DONAHO, W.T. ET AL FLORESVILLE, E. (POTH B 2800) TRIPLE H PRODUCTION 04954 DONNELL 'B' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15847 DONNELL 'C' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15995 DONNELL "A" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15645 DONNELL LOWE PASTURE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15935 DONNELL MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16306 DOOLEY A SOMERSET BETA OIL CORPORATION 15808 DOOLEY AA SOMERSET BETA OIL CORPORATION 15809 DOOLEY B SOMERSET BETA OIL CORPORATION 16036 DOOLEY, ROSALIE SHAW -A- SOMERSET BETA OIL CORPORATION 10836 DOOLEY, ROSALIE SHAW -C- SOMERSET PRODUCTION RESOURCES, INC. 11182 DOOLEY, ROSALIE SHAW B SOMERSET PRODUCTION RESOURCES, INC. 11723 DOOLIN DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18754 DOOLIN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17731 DORFMEISTER, L. CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 03024 DORMAN-SMITH -A- MINERVA-ROCKDALE JFC CONSTRUCTION LLC 11717 DORMAN-SMITH -B- MINERVA-ROCKDALE JFC CONSTRUCTION LLC 11716 DORN UNIT DUNLAP BLACKMAR, JIM OIL OPERATOR 08003 DORN-REECE UNIT LULING-BRANYON SOTOL ENERGY, INC. 13824 DORN, JAMES LULING-BRANYON SOTOL ENERGY, INC. 01118 DORN, LEROY J. DUNLAP KIDD PRODUCTION CO. 06757 DOROTHY SPRINGS EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16789


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DOROTHY SPRINGS B EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17206 DOROTHY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17423 DOROUGH UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16409 DORSET-TILLER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01064 DOSS BULLOH (POTH) E P C OIL & GAS, INC. 08132 DOSSETT A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19172 DOSSETT B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19168 DOSSETT C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19219 DOSSETT D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19255 DOSSETT E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19229 DOSSETT F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19256 DOSSETT G EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19260 DOSSETT H EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19279 DOSSETT J EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19445 DOSSETT K EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19453 DOSSETT L EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19468 DOSSETT N EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19454 DOSSETT P EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19459 DOSSETT Q EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19455 DOSSETT R EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19869 DOSSETT S EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19852 DOSSETT T EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19870 DOSSETT U EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19878 DOSSETT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16750 DOTTIE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17381 DOUBLE BARREL UNIT PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 12925 DOUBLE DEUCE BULLOH (POTH) DOUBLE DEUCE OPERATING 12666 DOUBLE DEUCE BRAVO BULLOH (POTH) DOUBLE DEUCE OPERATING 13116 DOUBLE DEUCE CHARLIE BULLOH (POTH) DOUBLE DEUCE OPERATING 13117 DOUBLE J UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18885 DOUBLE K EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17230 DOUBLE K SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 15698 DOUBLE K NORTH SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14899 DOUBLE K UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18164 DOUBLE K UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18166 DOUBLE T RANCH EAGLEVILLE (EAGLE FORD-1) ROSEWOOD RESOURCES, INC. 19347 DOUBLE T RANCH FIRST SHOT (AUSTIN CHALK) ROSEWOOD RESOURCES, INC. 19273 DOUGHERTY LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17167 DOUGHERTY UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17170 DOUGHERTY UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17172 DOVE SOMERSET SEAGULL OPERATING CO., INC. 11229 DOWDA, JAMES SOMERSET GREAT PLAINS RESOURCES, INC. 11145 DOWDY, A. E. DARST CREEK (BUDA) DELRAY OIL, INC. 02716 DOWDY, A. E. DARST CREEK (BUDA) SIGNAL OIL AND GAS COMPANY 02711 DOWDY, A. E. DARST CREEK (EDWARDS) SIGNAL OIL AND GAS COMPANY 14358 DOWDY, A. E. -C- DARST CREEK (BUDA) DELRAY OIL, INC. 02757 DOWDY, A. E. -C- DARST CREEK (EDWARDS) DELRAY OIL, INC. 02798 DOWDY, A. E., -B- DARST CREEK (BUDA) DELRAY OIL, INC. 03844 DOWDY, MRS. A. E. -A- DARST CREEK (BUDA) GARRISON LTD. 02738 DOWELL, LULING UNIT #6 SALT FLAT CASTILLO OIL COMPANY LLC 03032 DOWNES, L.E. TAYLOR-INA OILEX INT'L INVESTMENTS, INC. 07293


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DOWNIE SOMERSET SEAGULL OPERATING CO., INC. 11234 DOWNING, DOUGLAS V. BEAR CREEK DOWNING, MARK 00031 DOYLE UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17919 DP UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 18387 DRAKE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17596 DRAKE-BORCHERS UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17245 DRESCH SOMERSET SEEKER OIL COMPANY, INCORPORATED 12209 DRESCH, EDWARD SOMERSET PAISANO PRODUCTION, INC. 11272 DREYER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15930 DREYFUS, JACK J. WILDCAT SHWJ OIL & GAS CO., INC. 12331 DRIGGS, J. P. CAMPANA, SOUTH TRIUM, LTD. 00178 DRIGGS, J. P. CAMPANA, SOUTH (CHERNOSKY) TRIUM, LTD. 02573 DRISCOLE, B.W. BEAR CREEK FIVE STAR OPERATING COMPANY 11491 DROUGHT, ANN G. PENA CREEK (SAN MIGUEL 3RD) IMPERATOR OPERATING, LLC 04324 DRYDEN, E. J. CHICON LAKE RLU OIL & GAS, INC. 00300 DUAL ZONE PILOSA (GLEN ROSE) TX ENERGY SERVICES, LLC 16216 DUBE ET AL V. DESHAZO (ANACACHO) WOODHAM OIL CORPORATION 09890 DUBOIS WILDCAT CXL ENERGY LLC 19532 DUBOIS, BOYCE L. PEMBERTON (NAVARRO) VICEROY PETROLEUM, LP 04574 DUBOSE EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15406 DUBOSE PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12800 DUBOSE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16627 DUBOSE UNIT NO. 2 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16967 DUBOSE UNIT NO.1 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16929 DUBOSE-DAUCHY FENTRESS (1750) BOB-KAT OIL CO. 11355 DUBOSE, BLAXTON CHRISTIAN (6800) TEXATRON PETROLEUM LLC 13124 DUBOSE, GEORGIA, ET AL DUBOSE (EDWARDS -A-) SONITT PETROLEUM CORP. 03150 DUBOSE, J. M. PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 06707 DUCHO UNIT PEACH CREEK (AUSTIN CHALK) FORD, DON H. & ASSOC. 07774 DUGT, BEN CINDY ANN (BUDA) CIBOLO ENERGY OPERATING, INC. 10434 DUKE TENNEY CREEK CASTILLO OIL COMPANY LLC 11542 DUKE BOYS 3 SALT FLAT, WEST BLACKMAR, JIM OIL OPERATOR 11736 DUKE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17876 DUKE, CHARLES SOMERSET THOMAS EXPLORATION & DEVEL., INC 11094 DUKE, LEON B SALT FLAT, WEST G & D OIL COMPANY 09914 DUKES, L. B. ETAL MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01231 DULANEY, FRED JOURDANTON (QUEEN CITY) GUINN OPERATING COMPANY, LLC 19775 DULLNIG UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16493 DULLNIG UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16458 DULLNIG UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16370 DULLNIG UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16310 DULLNIG UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16685 DULLNIG UNIT G DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16471 DUNBAR TURNEY PNP OPERATING COMPANY LLC 19094 DUNBAR B TURNEY PNP OPERATING COMPANY LLC 19193 DUNBAR C TURNEY EXA OIL AND GAS LLC 19695 DUNCAN, W.F. SPILLER GINCO OPERATING CO. 06963 DUNE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17966 DUNKLE PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16234 DUNLAP PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16453 DUNLAP PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 18584


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DUNLAP, MRS. N. L., EST. -A- DUNLAP LLT ENERGY, INC. 00523 DUNLAP, N. L., MRS., EST. -B- DUNLAP LLT ENERGY, INC. 02481 DUNLAP, SAM PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 06604 DUNLAP, SAMUEL C. ET AL PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 05675 DUNLAP, SAMUEL C. III BIG WELLS(SAN MIGUEL, LO., EAST) SABINAL RESOURCES, INC. 04266 DUNN EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16773 DUNN PEARSALL (AUSTIN CHALK) NEWTON CORP.,THE 13540 DUNN-SCHNEIDER 1 EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 19889 DUNN, A.M. PEARSALL (AUSTIN CHALK) NEWTON CORP.,THE 12624 DUNN, ANNE DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 15127 DUREN CROWN, E. (NAVARRO) EXXCEL OPERATING COMPANY 10455 DUREN & RICHTER -B- IMOGENE, SOUTHEAST BRYMER CONTRACTING INCORPORATED 00702 DUREN & RICHTER ACT. #1 IMOGENE PEARL, BILL H. PRODUCTIONS, INC. 00673 DUREN & RICHTER ACT. #2 IMOGENE PEARL, BILL H. PRODUCTIONS, INC. 00674 DUREN & RICHTER ACT. #3 IMOGENE PEARL, BILL H. PRODUCTIONS, INC. 00675 DUREN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18130 DUSEK A.W.P. (OLMOS) XTO ENERGY INC. 09353 DUSEK EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17153 DUTCH EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 17515 DVR 'A' EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16814 DVR 'B' EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15955 DVR 'D' EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16416 DYC -A- PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 12371 DYE, C. F. SALT FLAT DST OIL COMPANY 01495 DYESS PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16233 DYESS, DALE LA VERNIA DOEGE, DONALD 08610 DYMKE MINERVA-ROCKDALE TESUQUE OIL & GAS LLC 01198 DYMKE, RONALD P., ETAL MINERVA-ROCKDALE PRICE OPERATING, LLC 02337 DZIUK B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17271 DZIUK C EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17270 DZIUK C - RCT B 1 EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 19782 DZUIK, CHARLES MARCELINA CREEK (AUSTIN CHALK) SARITA ENERGY RESOURCES, LTD. 08231 E S I # 3 - KNAPEK THRALL BLACK JACK SERVICES, L.L.C. 14464 E. BAKER 'A' BAKER (2500) FIELD PETROLEUM CORP. 17586 E. E. SMITH UNIT 1 FIRST SHOT (AUSTIN CHALK) EARTHSTONE OPERATING, LLC 12959 E. E. SMITH UNIT 2 FIRST SHOT (AUSTIN CHALK) EARTHSTONE OPERATING, LLC 13083 E. F. JOHNSON WILDCAT HIGHER STANDARD OIL COMPANY,INC. 17548 E. FLORESVILLE /POTH SAND/ UNIT FLORESVILLE, EAST A & C OIL COMPANY, LLC 03392 E.E. SMITH UNIT 3 FIRST SHOT (AUSTIN CHALK) MODERN EXPLORATION, INC. 13152 E-F 1893 UNIT DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16309 EAGLE EYES UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS OPERATING LLC 17739 EALAND PEARSALL (AUSTIN CHALK) DRISCOLL S.W.D. INC. 10034 EARDLEY BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 18842 EARDLEY PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14079 EARNEST, W. A. PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05073 EARNESTINE WILDCAT AB RESERVE, LLC 19016 EARTH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18295 EARWOOD JEANIE (SERPENTINE) ATLAS OPERATING LLC 08089 EASH, RICHARD L. SOMERSET U. D. MAN, INC. 07664 EAST CENTRAL DEV. TRACT ONE LA VERNIA DOEGE, DONALD 07566 EAST CROWN, EAST /NAVARRO/ UNIT CROWN, E. (NAVARRO) HUNTERS CREEK OIL & GAS 03395


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ EAST ELROY UNIT ELROY, EAST ELECTRAGAS, INC. 04137 EAST PENA CREEK UNIT PENA CREEK (OLMOS 2350) FLINT OAK ENERGY, LLC 14089 EAST PENA CREEK UNIT PENA CREEK (SAN MIGUEL 3RD) FLINT OAK ENERGY, LLC 04317 EASTWOOD CHEROKEE (NAVARRO) DASH PRODUCTION COMPANY, INC. 17736 EASTWOOD-JOHNSON MILBUR (NAVARRO) DASH PRODUCTION COMPANY, INC. 07183 EASTWOOD, E. -A- SOMERSET PETROSAURUS, INC. 02246 EASTWOOD, E. -B- SOMERSET U. D. MAN, INC. 02011 EASTWOOD, E. T. SOMERSET CALAME, RICHARD 03927 EBROM MARCELINA CREEK (AUSTIN CHALK) DOMINION PRODUCTION COMPANY, LLC 15170 EC NORTH UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 18962 EC SOUTH UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19531 ECD UNIT SOMERSET GINCO OPERATING CO. 10835 ECD UNIT-B- SOMERSET GINCO OPERATING CO. 11320 ECHTLE B CHICON LAKE OJT, LLC 18697 ECHTLE, FRANCIS CHICON LAKE OJT, LLC 02442 ECKOLS -C- DARST CREEK (BUDA) OCCIDENTAL ENERGY COMPANY, INC. 02732 ECKOLS, OLEVIA LA VERNIA ALCORN RESOURCES, LLC 05428 EDDIE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17506 EDGAR LIPPE 'A' PLUM CREEK (SERPENTINE) H & K OIL COMPANY (A) 19178 EDMUND TOM 01 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 15750 EDMUND TOM 02 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 15751 EDRINGTON HIDDEN VALLEY (SAN MIGUEL) WILLIAMSON OPERATING CO. 05724 EDSEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17077 EDWARD HOSEK UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17393 EDWARD, J.W. -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10793 EDWARDS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16141 EDWARDS EAGLEVILLE (EAGLE FORD-1) MAGNOLIA OIL & GAS OPERATING LLC 17940 EDWARDS SOMERSET SEAGULL OPERATING CO., INC. 11236 EDWARDS A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15571 EDWARDS SWD A.W.P. (OLMOS) SPARKMAN ENERGY, LLC 18917 EDWARDS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15442 EDWARDS UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16377 EDWARDS UNIT LA VERNIA, WEST (AUSTIN CHALK) ATTIS OPERATING I INC. 13912 EDWARDS UNIT SALT FLAT E. T. OIL COMPANY 06347 EDWARDS UNIT A EAGLEVILLE (EAGLE FORD-1) MAGNOLIA OIL & GAS OPERATING LLC 18675 EGGER, MARVIN JORDAN (NAVARRO B) BETRO, INC. 05651 EHRIG-GRAUKE UNIT PEACH CREEK (BUDA) TALARIA OIL & GAS LLC 18547 EICHMAN, F. F. KAYE (NAVARRO) JOHANSON OIL 02219 EILEEN PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19942 EISSLER GUADALUPE BEND (AUSTIN CHALK) CHIODO CORP. 13734 EKLUND SALT FLAT GREAT PLAINS RESOURCES, INC. 03568 EKLUND -K- SALT FLAT JAD OIL, INC. 09454 EKLUND CONSOLIDATED SALT FLAT JAD OIL, INC. 06754 EKLUND SOUTH SALT FLAT NORTH AMERICAN DRILLING CORP 19444 EKLUND, CARL SALT FLAT GREAT PLAINS RESOURCES, INC. 03824 EKLUND, CARL -A- SALT FLAT H & W ENERGY 06272 EKLUND, CARL -D- SALT FLAT JAD OIL, INC. 06549 EKLUND, CARL C. SALT FLAT JAD OIL, INC. 07868 EKLUND, CARL JR SALT FLAT COMANCHE WELL SERVICE CORP. 09969 EKLUND, CARL JR. SALT FLAT OSYKA OIL & GAS, INC. 11700 EKLUND, CARL, -A- SALT FLAT GREAT PLAINS RESOURCES, INC. 03880


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ EKLUND, CARL, JR. SALT FLAT GREAT PLAINS RESOURCES, INC. 02978 EKLUND, KATHEEN -C- SALT FLAT H & W ENERGY 06321 EKLUND, KATHLEEN -B- SALT FLAT BRUSHY CREEK OIL CO. 06296 EL CID -A- PEARSALL (AUSTIN CHALK) BUSH, MARK A. OIL AND GAS INC. 05394 EL CID -C- PEARSALL (AUSTIN CHALK) BUSH, MARK A. OIL AND GAS INC. 13804 EL REGALO BUCKHORN BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 15998 EL VIEJO GOTEBO KID (VOLCANICS) PROPERTY DEVELOPMENT GROUP, INC. 14038 ELAINE (5100) UNIT ELAINE (5100) WHITE MARLIN OPERATING CO, LLC 07143 ELAINE FIELD /SAN MIGUEL/ UNIT ELAINE (SAN MIGUEL) WHITE MARLIN OPERATING CO, LLC 03356 ELAND UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16382 ELDER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17749 ELDRIDGE UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 12641 ELDS EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17936 ELI R. HUFFMAN JR. EAGLEVILLE (EAGLE FORD-1) ROSEWOOD RESOURCES, INC. 19270 ELIJAH MARCELINA CREEK (BUDA) G & K OPERATING, LLC 12131 ELIOTT, R.E. A.W.P. (OLMOS) XTO ENERGY INC. 07650 ELIZABETH PEARSALL (BUDA, S.) STEPHENS PRODUCTION COMPANY 17664 ELIZONDO-DUNCAN UNIT FAIRFIELD CRYSTAL RESOURCES, INC 02349 ELIZONDO, LUCIUS LA VERNIA LEASE & WELL SERVICE, INC. 02673 ELK RANCH WILDCAT HALLIBURTON ENERGY SERVICES, INC 19514 ELK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17433 ELKINS, A. NIXON CRYSTAL RESOURCES, INC 12207 ELKINS, ALEX ACLETO CREEK (POTH A) P.S.N. PETROLEUM, INC. 09758 ELKINS, JESSE ACLETO CREEK (POTH A) WTXR OPERATING (TEXAS), INC. 06908 ELKINS, JESSE ACLETO CREEK (POTH B) WTXR OPERATING (TEXAS), INC. 06838 ELKINS, JESSE ACLETO CREEK (POTH C) WTXR OPERATING (TEXAS), INC. 06909 ELKINS, JESSE -B- ACLETO CREEK (POTH B) WTXR OPERATING (TEXAS), INC. 07516 ELKINS, JESSE -B- ACLETO CREEK (POTH C) WTXR OPERATING (TEXAS), INC. 07314 ELKINS, JESSE -C- ACLETO CREEK (POTH A) WTXR OPERATING (TEXAS), INC. 08253 ELLEDGE EL INDIO, N.(OLMOS) WOLF, DARYL OIL 11057 ELLIS PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 14224 ELLISON LULING-BRANYON NORTH SOUTH OIL, LLC 18145 ELLISON LULING-BRANYON PETROSAURUS, INC. 01129 ELLISON LULING BRANYON R 40 EXC NORTH SOUTH OIL, LLC 19355 ELLISON SALT FLAT GREAT PLAINS RESOURCES, INC. 08552 ELLISON LONE STAR LULING-BRANYON TX LONE STAR OPERATING CO, LLC 15145 ELLISON, A. KAYE (NAVARRO) MEB, LLC 02111 ELLISON, ALBERT KAYE (POTH) MEB, LLC 02501 ELLISON, ROGER TENNEY CREEK IRON ORCHARD OPERATING LLC 08478 ELLISON, W. LULING-BRANYON BAIR'S LEASE SERVICE, INC. 09405 ELLISON, W. M. LULING-BRANYON PRONTO SERVICES 01046 ELLISON, WALTER LULING-BRANYON AUSTIN OPERATING, LLC. 06254 ELLISON, WALTER LULING-BRANYON MEB, LLC 06255 ELLISON, WALTER -B- LULING-BRANYON OCCIDENTAL ENERGY COMPANY, INC. 06853 ELLISON, WALTER -D- LULING-BRANYON GINCO OPERATING CO. 02318 ELMAN MINERVA-ROCKDALE RED OAK OIL COMPANY, LLC 18679 ELVIRA PILGRIM (AUSTIN CHALK) K & L OIL, LLC 13423 ELWOOD CARTER C SPILLER TEXSTAR OIL & GAS, LLC 09895 EMERSON BUCHANAN FOYORO ENERGY, LLC 12343 EMIL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17945 EMLEY FAIRFIELD LONGSHOT ENERGY LLC 19199


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ EMLEY, WILLIAM E. CHICON LAKE LONGSHOT ENERGY LLC 06147 EMMA TARTT EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 16032 EMOGENE UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13359 ENCINA-COLEMAN PEARSALL (AUSTIN CHALK) CLARON CORPORATION 12864 ENGELKE, ALVIN SPILLER TEXSTAR OIL & GAS, LLC 01674 ENGELKE, AUGUST SPILLER RUJO 02568 ENGELKE, AUGUST SPILLER WHITFIELD, W. C. JR. TRUST 03708 ENGELKE, OTTO SPILLER EAGLE FORD OIL CO., INC. 03511 ENGELKE, VERNON SPILLER GINCO OPERATING CO. 03362 ENGELKE, VERNON SPILLER TEXSTAR OIL & GAS, LLC 01675 ENGLER SWD BRISCOE RANCH (EAGLEFORD) PRODUCED WATER TRANSFER1 LLC 17452 ENGLISH-SPARKS UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 10786 ENGLISH, D.E. ET AL PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 05116 EPPRIGHT, J. T. CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 03267 EPPRIGHT, M. W. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 03473 EPPRIGHT, M. W., -B- LYTTON SPRINGS EAGLE FORD OIL CO., INC. 03726 EPPRIGHT, M. W., -C- LYTTON SPRINGS EAGLE FORD OIL CO., INC. 03732 EPSTEIN-BALBOA -A- FAIRFIELD CALK, ROGER D. 09492 EPSTEIN, JEROME FAIRFIELD GREAT PLAINS RESOURCES, INC. 06580 EPSTEIN, SADIE SALT FLAT LULING WELL SERVICE 02857 EPSTEIN, SADIE ETAL UNIT SALT FLAT LULING WELL SERVICE 03135 ERCP MINERALS EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19471 ERMIS JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 17508 ERNEST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18184 ERNST SOMERSET SEAGULL OPERATING CO., INC. 11233 ERNST -A- SOMERSET SEAGULL OPERATING CO., INC. 11239 ERNST -D- SOMERSET SEAGULL OPERATING CO., INC. 11248 ERNST -E- SOMERSET SEAGULL OPERATING CO., INC. 11249 ERNST -F- SOMERSET SEAGULL OPERATING CO., INC. 11251 ERNST -G- SOMERSET SEAGULL OPERATING CO., INC. 11250 ERNST LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16501 ERNST UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16496 ERNST UNIT D LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16228 ERNST, GEORGE SOMERSET LANDOR OIL CO. 03111 ERNST, HERBERT SOMERSET FIVE STAR OPERATING COMPANY 10991 ERNST, HERBERT -C- SOMERSET GREAT PLAINS RESOURCES, INC. 10992 ERNST, KATIE L. SOMERSET PETROSAURUS, INC. 03113 ERTZNER, FRED LA VERNIA TANGLEHEAD OPERATING, LLC 11544 ERVIN, ET AL PEACH CREEK (BUDA) DOMINION PRODUCTION COMPANY, LLC 15119 ESCHENBURG MARCELINA CREEK (AUSTIN CHALK) CEI OPERATING LLC 16271 ESCHENBURG MARCELINA CREEK (BUDA) AERIE ENERGY 14852 ESCHENBURG MARCELINA CREEK (BUDA) CEI OPERATING LLC 14233 ESCHENBURG-POLLOK EAGLEVILLE (EAGLE FORD-1) SANTA ROSA OPERATING, LLC 19002 ESCHENBURG, ET AL UNIT MARCELINA CREEK (AUSTIN CHALK) AERIE ENERGY 13569 ESCHENBURG, R.L. II ET. AL. MARCELINA CREEK (AUSTIN CHALK) CEI OPERATING LLC 09175 ESCONDIDO BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 16959 ESCONDIDO PENA CREEK (GEORGETOWN) BUFFCO PRODUCTION INC. 18546 ESI #1 - KNAPEK THRALL BLACK JACK SERVICES, L.L.C. 14455 ESMA JEAN WARD TRUST EAGLEVILLE (EAGLE FORD-1) ROSEWOOD RESOURCES, INC. 19218 ESPADA UNIT MONKSFIELD (350 SAND) ROOT DRILLING COMPANY 11740 ESPANTOSA LAKE UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14818


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ESPANTOSA LAKE UNIT G DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16890 ESPARZA UNIT WEINERT (BUDA) EVEREST RESOURCE COMPANY 18216 ESPERANZA A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19831 ESPERANZA B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19832 ESPERANZA C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19835 ESSE EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16491 ESSE-SMITH RANCH UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15650 ESSE-SMITH RANCH UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15670 ESTRADA, ELGARIO M. SOMERSET GREAT PLAINS RESOURCES, INC. 10993 ET EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16135 ETHRIDGE -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 01037 ETHRIDGE -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 04469 EUBANK, BLANCH -B- BLANCH (OLMOS) HAMILTON, J. R. 02577 EUERS, MELVIN BATEMAN (AUSTIN CHALK) MEB, LLC 10014 EUSTACE HINDES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16008 EUSTACE TOWNSEND UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15781 EVA COE CHRISTINE, SE. (WILCOX) RICKAWAY ENERGY, CORP. 14963 EVANS EF A EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 19945 EVANS TX OSAGE EF A EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 19941 EVANS, GEO. N. -B- SOMERSET TEXAS SECONDARY OIL CORPORATION 10896 EVANS, HENRIETTA FAIRFIELD HASLETT, TERRY E. 10682 EVANS, JOHN A. DARST CREEK (BUDA) DJ EXPLORATION, INC. 08367 EVANS, JOHN A. DARST CREEK (EDWARDS) DJ EXPLORATION, INC. 08623 EVANS, WORTH WORTH EVANS (GLEN ROSE) H I S OIL CO. 09832 EVANS,LESTER J. & LETTIE B. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06427 EVELYN WHEELER EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16345 EVERGLADES A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19579 EVERGLADES B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19656 EVERGLADES C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19640 EVERGLADES D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19933 EVERGLADES E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19657 EVERGREEN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15318 EWALD/HURT UNIT PEARSALL (AUSTIN CHALK) DISCOVERY PETROLEUM, L.L.C. 12391 EWING, ROBERT PALMER (POTH-B) LT OIL LLC 06161 EXCALIBER/ FALCON LEAL PLEASANTON (EDWARDS LIME) EXCALIBUR E & P, LLC 17865 EXCALIBUR/FALCON BURGER WILDCAT EXCALIBUR E & P, LLC 17351 EXCALIBUR/FALCON BURGER PLEASANTON (EDWARDS LIME) EXCALIBUR E & P, LLC 17928 EXELCO EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15588 EXXON CHARLOTTE (AUSTIN CHALK) RICKAWAY ENERGY, CORP. 13928 EZZELL, F.M. ETAL PALMER (POTH-B) WTXR OPERATING (TEXAS), INC. 05084 EZZELL, ROSE DRAGOON CREEK (GOVT. WELLS, UP.) WOOD, C.W. 03626 F CRAIN EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 15449 F.N.B.T. "A" BIG WELLS (SAN MIGUEL) UNITEX OIL & GAS, L.L.C. 05746 F&M ENGINEERING, INC LA VERNIA KUBENA, WESLEY T. 06097 FAIR JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 17642 FAIRCHILD, J.M. DUNLAP PETROSAURUS, INC. 06200 FAIRWAY PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05890 FAITH BONITA A UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17953 FAITH BONITA B UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17898 FAITH BONITA D UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15769 FAITH BONITA J UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17886


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FAITH BONITA N UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17885 FAITH BONITA O UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17884 FAITH BONITA P UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17954 FAITH BONITA Q UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17902 FAITH BONITA U UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18563 FAITH SAN PEDRO AA UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18341 FAITH SAN PEDRO FF UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18539 FAITH SAN PEDRO J UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16617 FAITH SAN PEDRO V UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18372 FAITH SAN PEDRO X UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16646 FAITH SANDY A UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18208 FAITH SANDY B UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18267 FAITH SANDY C UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18262 FAITH TORO C UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19521 FAITH TORO D UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19522 FAITH TORO DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19090 FAITH TORO M UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19519 FAITH TORO N UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19520 FAITH TORO P UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19547 FAITH TORO Q UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19570 FAITH TORO R UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19556 FAITH TORO S UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19568 FAITH TORO T UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19566 FAITH TORO U UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19541 FAITH TORO V UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19542 FAITH TORO W UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19557 FAITH TORO X UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19546 FAITH-BONITA BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15584 FAITH-BONITA F UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16043 FAITH-BONITA I UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17882 FAITH-RINCON WILDCAT CHESAPEAKE OPERATING, L.L.C. 19932 FAITH-SAN PEDRO BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15317 FAITH-SAN PEDRO A UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15675 FAITH-SAN PEDRO DD UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17911 FAITH-SAN PEDRO E UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16528 FAITH-SAN PEDRO F UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16619 FAITH-SAN PEDRO I UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16527 FAITH-SAN PEDRO K UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18444 FAITH-SAN PEDRO L UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18447 FAITH-SAN PEDRO Y UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18354 FAITH-SAN PEDRO Z UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18376 FAITH-SANDY BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15626 FAITH-TORO B UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16260 FAITH-TORO K UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16760 FAITH-YANA BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15564 FAITH-YANA BB UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19112 FAITH-YANA D UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15658 FAITH-YANA S UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19105 FAITH-YANA T UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19106 FAITH-YANA U UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19136 FAITH-YANA V UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19121


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FAITH-YANA Z UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19120 FAJITA UNIT SOMERSET PAISANO PRODUCTION, INC. 10767 FAKTOR EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16514 FALKNER-JUERGEN ET UX. MILANO, EAST (BUDA) ERNEST OPERATING COMPANY 05755 FALLOW UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15896 FALOR, ALLEN LA VERNIA FALOR, ALLEN C. 06463 FALOR, HIRAM LA VERNIA ALCORN RESOURCES, LLC 00828 FALSETTE RANCH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17552 FALSETTE RANCH UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17550 FALSETTE RANCH WEST LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17509 FANCHER FAIRFIELD CALK, ROGER D. 08799 FANNIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17871 FANSLER, LORRAINE TRI BAR (OLMOS) VIRTEX OPERATING COMPANY, INC. 16981 FANSLER, LORRAINE TRI BAR, NORTH (OLMOS) VIRTEX OPERATING COMPANY, INC. 10394 FARIAS SWD PENA CREEK (GEORGETOWN) R360 ENV SOLUTIONS OF TX, LLC 18229 FARNER A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19554 FARNER B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19553 FARNER C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19555 FARNIK EAGLEVILLE (EAGLE FORD-1) RICKAWAY ENERGY, CORP. 15892 FARRAN SOMERSET GREAT PLAINS RESOURCES, INC. 11548 FARRAN SOMERSET PAISANO PRODUCTION, INC. 10759 FARRAN SOMERSET U. D. MAN, INC. 10779 FARRAN SOMERSET UNDERBRINK OIL 10865 FARRAN, W. W. ANCHORAGE ESSEX & ARMSTRONG 00013 FARRAR-CAMPION EAGLEVILLE (EAGLE FORD-1) DIAMOND M DRLG & EXPL CO. 18052 FARRAR-CAMPION PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 15083 FARRELL, V. A. CHARLOTTE (NAVARRO) WSM 03284 FASELER, ROBERT A. ET UX ADAMS (BUDA) ACTIVA RESOURCES, LLC 05552 FAUST DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16044 FEDC-LINCOLN SASPAMCO P.S.N. PETROLEUM, INC. 13527 FEDERAL ROYALTY CO., ETAL -A- SOMERSET PETROSAURUS, INC. 02084 FEDERAL ROYALTY CO., ETAL -B- SOMERSET PETROSAURUS, INC. 01614 FEE MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14092 FEE MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01199 FEHNER, ODIS MAG (BUDA) 2 D OIL & GAS LLC 07594 FELISA VALDEZ CHICON LAKE RLU OPERATING, LLC 18719 FELPS BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 15441 FELPS COMANCHE-HALSELL (6500) RIO-TEX, INC. 15121 FELPS "A" BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 16943 FELUX EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15802 FELUX, JOE JR. POTH, EAST (AUSTIN CHALK) CHISHOLM OIL & GAS, LC 07175 FERDINAND FIRST SHOT (AUSTIN CHALK) RECOIL RESOURCES OPERATING, INC. 18061 FERDINAND UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17720 FERGUSON PEARSALL (AUSTIN CHALK) FERGUSON OIL & GAS INC. 04749 FERGUSON PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 16567 FERGUSON-MCKNIGHT BRISCOE RANCH (EAGLEFORD) EL TORO RESOURCES LLC 15263 FERGUSON-MCKNIGHT LORENZO (AUSTIN CHALK) EL TORO RESOURCES LLC 19361 FERGUSON-MCKNIGHT PEARSALL (AUSTIN CHALK) EL TORO RESOURCES LLC 14905 FERGUSON, R. E. CHARLOTTE (NAVARRO) 3-L DRILLING 03313 FERNANDEZ UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17628 FERNANDEZ, RICARDO TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06726


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FERRELL SOMERSET R W RANCH 10751 FERRY, SARAH E. PLEASANTON (CARRIZO SAND) GUINN OPERATING COMPANY, LLC 01377 FERRY, SARAH E. UNIT PLEASANTON (EDWARDS LIME 8100) SNG OPERATING, LLC 13961 FEUGE, ORSON -A- HASSE (BUDA) STEINDORF, BERT OIL & GAS CO. 13485 FF CHEAPSIDE SWD EAGLEVILLE (EAGLE FORD-1) EVX MIDSTREAM PARTNERS II LLC 16352 FF DILLEY SWD PEARSALL (AUSTIN CHALK) PRODUCED WATER TRANSFER1 LLC 16249 FF FASHING SWD EAGLEVILLE (EAGLE FORD-1) EVX MIDSTREAM PARTNERS II LLC 17700 FIEDLER FIEDLER BROTHERS MILLENNIUM PETRO-PHYSICS, INC. 14985 FIEDLER BROTHERS FIEDLER BROTHERS TRACKER OIL & GAS, INC. 09390 FIEDLER BROTHERS LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16393 FIEDLER BROTHERS UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16203 FIEDLER UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16535 FIELDER DALE-MCBRIDE FOYORO ENERGY, LLC 13603 FIELDER, A. H. LULING-BRANYON AUSTIN OPERATING, LLC. 03724 FIELDER, W. M., ETAL LULING-BRANYON TURNER, GLEN 01044 FIELDER,A.H. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 08661 FIELDS, F. L. -C- LULING-BRANYON FIELD OPERATING COMPANY, INC. 03259 FIELDS, F.L. ETAL "B" LULING-BRANYON FIELD OPERATING COMPANY, INC. 03714 FIELDS, FRANCES -A- DUNLAP GEOMEG ENERGY OPERATING CO., LLC 12080 FIELDS, FRANCIS L., ETAL "A" LULING-BRANYON E & W OIL, INC. 03682 FIELDS, J. T. LULING-BRANYON ENHANCED RS, INC. 01065 FIELDS, J. T. -A- LULING-BRANYON ENHANCED RS, INC. 03678 FIELDS, J.T. - BERRY LULING-BRANYON ENHANCED RS, INC. 08480 FIELDS, J.T. "S.W." LULING-BRANYON ENHANCED RS, INC. 14109 FILCH A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19491 FILCH B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19451 FILCH C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19452 FILCH D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19472 FILCH E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19448 FILCH F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19449 FILCH G EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19450 FINCH-BIRD UNIT NIXON JIMCO ENERGY INC. 11976 FINCH, BEULAH ET AL PRUITT, S.E. (ESCONDIDO) 3-L DRILLING 11881 FINCH, BEULAH, ETAL PRUITT, SE. (OLMOS) 3-L DRILLING 01420 FINCH, C. E. PRUITT, SE. (OLMOS) MAVERICK ENERGY GROUP, INC. 01905 FINCH, S. P. GALBA (CARRIZO) WSM 00621 FINCH, W.& C SOMERSET KOKO ENTERPRISES 10918 FINCK, O.H. SOMERSET GREAT PLAINS RESOURCES, INC. 10995 FINK PILGRIM (AUSTIN CHALK) CADDO ENERGY CO., INC. 13424 FINK, WM. FAIRFIELD QUINTANILLA, TONY C. 02536 FIRST LOCKHART NATIONAL BANK LULING-BRANYON E-P OIL CO. INC. 00988 FIRST LOCKHART NATIONAL BANK -A- LULING-BRANYON E-P OIL CO. INC. 05885 FIRST LOCKHART NATIONAL BANK -B- LULING-BRANYON E-P OIL CO. INC. 09290 FIRST LOCKHART NATIONAL BANK -C- LULING-BRANYON E-P OIL CO. INC. 09291 FIRST STATE BANK OF LOCKHART LULING-BRANYON E-P OIL CO. INC. 06230 FIRST STATE BANK OF LOCKHART LULING-BRANYON J & W OIL COMPANY 00989 FISBECK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17437 FISCHER BUCHANAN CALISTOGA ENERGY RESERVES, LLC 13352 FISCHER, M. F. DALE-MCBRIDE CALISTOGA ENERGY RESERVES, LLC 06383 FISHER ET AL UNIT JOURDANTON (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 19159 FISHER, GEO. N. AND MARIE MINERVA-ROCKDALE CHMELAR, EUGENE OIL & GAS 10227


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FISHER, GROVER JAYEDDIE, SOUTH PETROSAURUS, INC. 09058 FISHER, J. E. MINERVA-ROCKDALE PRICE OPERATING, LLC 02679 FITZPATRICK WIPFF (GEORGETOWN) JANCO OPERATING 11884 FITZSIMMONS "A" HUGH FITZSIMONS (OLMOS) PRIME OPERATING COMPANY 14178 FITZSIMMONS 25 HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 14341 FITZSIMMONS, HUGH "A" HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 14145 FIVE F EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16072 FIVE MILE UNIT FIVE MILE (WILCOX, UPPER) JET BLACK OIL, INC. 14313 FLAMMENWERFER UNIT EAGLEVILLE (EAGLE FORD-1) VERDUN OIL & GAS LLC 19473 FLAT CREEK DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16565 FLAT CREEK UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15982 FLAT CREEK UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16168 FLAT CREEK UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16327 FLAT CREEK UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16334 FLAT CREEK UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16195 FLAT CREEK UNIT G DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16561 FLAT CREEK UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16487 FLEEMAN NICKS LAND & CATTLE CO. KAYE (NAVARRO) JOHANSON OIL 09660 FLEMING, E. J. ETAL SALT FLAT GAUGE OIL COMPANY 01450 FLEMING, L. DARST CREEK (BUDA) AMERICAN CASCADE ENERGY, INC. 08074 FLEMING, L. DARST CREEK (EDWARDS) GREAT PLAINS RESOURCES, INC. 09571 FLETCHER UNIT SALT FLAT CASTILLO OIL COMPANY LLC 02983 FLICK UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17214 FLIELLER, CLIFTON CINDY ANN (AUSTIN CHALK, OIL) NORDSTRAND ENGINEERING, INC. 07652 FLORA WEBB UNIT JOURDANTON (RECKLAW) WSM 06796 FLORES EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15505 FLORES PEARSALL (BUDA LIME) TRINITY OPERATING (USG), LLC 17607 FLORES UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 15775 FLORES, GEORGE P. FAIRFIELD GREAT PLAINS RESOURCES, INC. 09723 FLORES, JUAN KAYE (NAVARRO) WOLFE OIL COMPANY 01903 FLOWER PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16956 FLOY GRAY SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 18850 FLOYD LA VERNIA PRODUCTION RESOURCES, INC. 19660 FLOYD PEACH CREEK (AUSTIN CHALK) BARNETT ENERGY, INC. 08482 FLOYD PEACH CREEK (AUSTIN CHALK) CHALLENGER OIL INC 06856 FLOYD TILLER SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15430 FLOYD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17062 FLOYD-BARNETT EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17481 FLOYD-FITZGERALD EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17474 FLOYD-PARKER EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17460 FLYING G PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15019 FLYING G RANCH PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 19912 FLYING G UNIT DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17478 FOERSTER, A. W. KAYE (NAVARRO) ENERGON3 00778 FOERSTER, A. W. KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 04472 FOERSTER, A. W., /FEE/ KAYE (NAVARRO) SOURCE PETROLEUM INC. 01857 FOERSTER, PAUL DAVIS (EDWARDS 7481) JENEX PETROLEUM CORPORATION 09281 FOERSTER, PAUL KAYE (NAVARRO) PRODUCTION RESOURCES, INC. 03946 FOGERTY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17815 FOGLE, J.H. SALT FLAT LULING WELL SERVICE 08022 FOGMT UNIT A BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 18658


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FOHN, E. L. -A- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01725 FOHN, EDWARD UNIT II TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06432 FOLEY MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15746 FOLEY, NORMENT LEONA (ELAINE) WELDON CORPORATION 06379 FORD BUCHANAN BEDFORD OIL & GAS, INC. 13692 FORD MOTOR CO. UNIT SALT FLAT OFFSPRING WELL SALVAGE 03073 FORD, DON H. SALT FLAT B. J. P. OPERATING 03686 FORD, GLADYS E. KAYE (NAVARRO) GONZALES, M. G. 01869 FOREMAN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17995 FOREST OAK SOMERSET PETROSAURUS, INC. 05994 FORISTER/ KING LOST MULE (AUSTIN CHALK) HAWKEYE OIL & GAS CORPORATION 12651 FORREST OAKS SOMERSET KIMBERJAY OIL & GAS COMPANY 11789 FORREST OAKS -A- SOMERSET PETRO LIONS, LLC 11414 FORREST OAKS -B- SOMERSET PETROSAURUS, INC. 11554 FORREST WHEELER EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15520 FORREST WHEELER 'A' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16678 FORREST WHEELER 'B' EAGLEVILLE (EAGLE FORD-1) BPX OPERATING COMPANY 18100 FORREST WHEELER 'B' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 17204 FORREST WHEELER 'C' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16832 FORREST WHEELER 'D' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 17218 FORREST WHEELER 'E' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 17205 FORSHAGE, ERWIN DARST CREEK (BUDA) GARRISON LTD. 02721 FORTIER, A. J. SOMERSET PETRO LIONS, LLC 07908 FORTNER, HATTIE ET AL LA VERNIA DOEGE, DONALD 07328 FOSTER A.W.P. (OLMOS) XTO ENERGY INC. 08262 FOSTER BIG FOOT CREATIVE OIL AND GAS OP II, LLC 04385 FOSTER FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 02046 FOSTER -A- A.W.P. (OLMOS) XTO ENERGY INC. 09521 FOSTER, CURTIS BULLOH (NAVARRO) PAL DRILLING COMPANY 05798 FOSTER, ESTER BULLOH (POTH) CADDO ENERGY CO., INC. 04642 FOSTER, GEORGE SOMERSET D.C. OIL 09821 FOSTER, J. ESTATE SUN T S H (OLMOS) FLETCHER OPERATING, LLC 14945 FOSTER, J.R. FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 07668 FOUR CORNERS RANCH-UNIT 'A' BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18146 FOUR CORNERS RANCH-UNIT 'B' BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18355 FOUR K PARTNERS EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16262 FOUSHEE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16113 FOUSHEE-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16134 FOWLER FENTRESS (1750) OFFSPRING WELL SALVAGE 09618 FOWLER SOMERSET B.J.F. PROD. 09195 FOWLER VAS II SOMERSET PETROSAURUS, INC. 13670 FOWLER, B. K. SOMERSET PETROSAURUS, INC. 01616 FOWLER, B. K. -B- SOMERSET PETROSAURUS, INC. 01617 FOWLER, B. K., ETAL -C- SOMERSET PETROSAURUS, INC. 01618 FOWLER, B. K., ETAL -D- SOMERSET PETROSAURUS, INC. 01619 FOWLER, F.J. SOMERSET GREAT PLAINS RESOURCES, INC. 10855 FOWLER, FLOYD J. SOMERSET PETROSAURUS, INC. 05716 FOWLER, IMA SOMERSET PETROSAURUS, INC. 10857 FOWLER, IMA -B- SOMERSET GREAT PLAINS RESOURCES, INC. 06459 FOWLER, IMA -C- SOMERSET CALK OIL COMPANY 10764 FOWLER, IMA ET AL SOMERSET GREAT PLAINS RESOURCES, INC. 10807


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FOWLER, J. W. SOMERSET PETRO LIONS, LLC 10829 FOWLER, SAM J. -A- SOMERSET CALK OIL COMPANY 10763 FOWLERTON A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18659 FOWLERTON B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18739 FOWLERTON C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18740 FOWLERTON SWD EAGLEVILLE (EAGLE FORD-1) EVX MIDSTREAM PARTNERS LLC 17257 FOX CREEK EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15332 FOX CREEK RANCH "A" EAGLEVILLE (EAGLE FORD-1) GULFTEX ENERGY, LLC 15413 FOX CREEK UNIT G EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15890 FRAIR, O.L. FAIRFIELD FAR, INC. 06750 FRAMPTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17279 FRANCIS, S. J. LULING-BRANYON CENTEX OIL & GAS 03068 FRANCISCO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16820 FRANGER FAIRFIELD FIVE STAR ENERGY OPERATIONS 00585 FRANGER FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 09951 FRANGER "A" FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 09949 FRANGER, HENRY F. FAIRFIELD CRYSTAL RESOURCES, INC 00599 FRANK JOURDANTON (SPARTA SAND) PRESSLY OIL INTEREST, INC. 19759 FRANK SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 07830 FRANK DAVIS SALT FLAT PRIORITY OIL COMPANY LLC 02217 FRANK, W. O. SALT FLAT BAIR'S LEASE SERVICE, INC. 03097 FRANKLIN A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16161 FRANKLIN B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16572 FRANKLIN C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16569 FRANKLIN D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17110 FRANKLIN UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16707 FRANKS, E.W. LA VERNIA LOTT PRODUCTION COMPANY 08232 FRANKS, G.W. ET AL PEARSALL (AUSTIN CHALK) FRANKS, GEORGE WILLIAM 12520 FRANKS, JULIAN -B- PEARSALL (AUSTIN CHALK) ATLAS ENERGY CORPORATION (DEL.) 05206 FRANKS, W.O -B- SALT FLAT, WEST E. T. OIL COMPANY 08777 FRANKS, W.O. -A- SALT FLAT, WEST E. T. OIL COMPANY 08727 FRAZIER, E. TAYLOR-INA CIVCO OPERATING LLC 03040 FRAZIER, HAROLD E. A.W.P. (OLMOS) XTO ENERGY INC. 11705 FREEDOM PRODUCTION UNIT MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 15198 FREEMAN MAG (AUSTIN CHALK) EOG RESOURCES, INC. 06117 FREEMAN-FREEMAN UNIT CHRISTIAN (6800) DOMINION PRODUCTION COMPANY, LLC 12998 FREEMAN, CHARLES SALT FLAT PRIORITY OIL COMPANY LLC 08986 FREEMAN, E. L. WILDCAT BRUNS, H. D., 1970 OIL CO 04423 FRIESENHAHN PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17997 FRIESENHAHN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17694 FRIESENHAHN-BUDNIK SOMERSET UNDERBRINK OIL 13287 FRIESENHAHN, M.J. #1 MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 07986 FRIESENHAHN, M.J. #2 MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 09230 FRIESENHAHN, NORBERT RINEHART (AUSTIN CHALK) QUEST RESEARCH & DEV. CORP. 01429 FRIESS 'A' TURNEY TEXAS SECONDARY OIL CORPORATION 19739 FRIESS BROTHERS TURNEY PNP OPERATING COMPANY LLC 07393 FRIO COUNTY SCHOOL LAND PEARSALL (AUSTIN CHALK) DSD-FRIO ENVIRONMENTAL, INC. 16058 FRIO LAND AND CATTLE BRISCOE RANCH (EAGLEFORD) BLACKBRUSH O & G, LLC 15476 FRIO RIVER RANCH EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16868 FRIO SWD PEARSALL (AUSTIN CHALK) MILESTONE ENVIRO SERVICES, LLC 17224 FRIO-TEX UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18509


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FRISBIE UNIT EAGLEVILLE (EAGLE FORD-1) DEVON ENERGY PRODUCTION CO, L.P. 15649 FRODO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17969 FROST BANK UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17890 FROST NATIONAL BANK TRUSTEE DENT INGRAM (OLMOS 5) OILTON RESOURCES, INC. 12903 FROST NATL BANK, TR. -B- BIG WELLS(SAN MIGUEL, LO., EAST) BOTASCH OPERATING, LLC 04926 FRY LULING-BRANYON FRY, JOHNNY R. 10243 FTR RANCH LTD WILDCAT HIGHER STANDARD OIL COMPANY,INC. 17535 FUCHS "D" THRALL JMR RESOURCES LLC 13510 FUCHS, FRITZ -A- THRALL P&F OPERATIONS, LLC 01736 FUCHS, FRITZ -B- THRALL JMR RESOURCES LLC 01737 FUCHS, FRITZ -C- THRALL JMR RESOURCES LLC 01738 FULLER SOMERSET PETROLEUM OILFIELD SERVICES INC. 01622 FULLER #1 PEARSALL (AUSTIN CHALK) CENTEX DEVELOPMENT 12966 FULPS, J. M. LULING-BRANYON GEOMEG ENERGY OPERATING CO., LLC 14290 FULPS, J. M. LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 01021 FUNK LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16740 FUNK UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16771 FURTHER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17348 FUSSELL, J.H. CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 09616 FUSSELL, J.H. CHEROKEE (NAVARRO) TESUQUE OIL & GAS LLC 07879 FUSSELL, R. R. CHEROKEE (NAVARRO) BETRO, INC. 04083 G.L. HAYES EF A EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 19876 G.L. HAYES EF B EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 19875 G.L. HAYES EF UNIT EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 19489 G&D - WILSON A SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 10469 GABRIEL ROSS LEE (AUSTIN CHALK) UNITED OPERATING, LLC 13370 GABRIEL A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19607 GABRIEL B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19620 GABRIEL C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19621 GABRIEL D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19622 GABRIEL, J. ROSSER (SERPENTINE) UNITED OPERATING, LLC 13803 GADWALL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17480 GAENZEL EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16725 GAIL PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19021 GAINES, THELKA SOMERSET SOUTHWEST LOOP 1604, LTD. 10898 GALAHAD EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17718 GALAN PEARSALL (AUSTIN CHALK) PETRO HERN COMPANY 12640 GALAN, ENRIQUE M. PEARSALL (AUSTIN CHALK) CRW PRODUCING CO. 04861 GALAPAGOS A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19843 GALAPAGOS B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19844 GALAPAGOS C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19845 GALAXY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18816 GALILEO 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18737 GALINDO, CLEMENTE SOMERSET RAINER ENERGY, INC. 10826 GALINDO, FRED SOMERSET UNDERBRINK OIL 09330 GALINDO, FRED -A- SOMERSET PAISANO PRODUCTION, INC. 13416 GALINDO, FRED/SALAZAR; SELSA R. SOMERSET CALK OIL COMPANY 07999 GALLANT, JAMES A. MANZANAS (ELLENBURGER) LEGACY ENERGY SERVICES 13973 GALM UNIT A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15297 GALM UNIT B BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15602 GANDALF UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18473


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GANDRE CHRISTIAN (6800) CEI OPERATING LLC 12051 GANN FESTERVAN EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 16632 GAP 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18934 GARCIA KENS (SERPENTINE) R & S OIL PRODUCTION CO. 08451 GARCIA PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13000 GARCIA SOMERSET FIVE STAR OPERATING COMPANY 10996 GARCIA -B- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 08800 GARCIA A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18653 GARCIA B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18656 GARCIA C-D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19072 GARCIA HC1 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19637 GARCIA HC2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19618 GARCIA HC3 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19646 GARCIA HC4 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19626 GARCIA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17175 GARCIA UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16230 GARCIA UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16386 GARCIA UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16191 GARCIA, A. C. SOMERSET PETROSAURUS, INC. 01623 GARCIA, JAMES DARST CREEK (BUDA) R & S OIL PRODUCTION CO. 06006 GARCIA, JAMES V. KENS (SERPENTINE) OFFSPRING WELL SALVAGE 13841 GARCIA, JAMES V. KENS (SERPENTINE) R & S OIL PRODUCTION CO. 10279 GARCIA, SANTOS SOMERSET UNDERBRINK OIL 10844 GARDENDALE A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16285 GARDENDALE B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16287 GARDENDALE C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16457 GARDENDALE D UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16530 GARDENDALE E UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16459 GARDENDALE F UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16533 GARDENDALE G UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16547 GARDENDALE-GIERISCH ALLOCATION A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18973 GARDENDALE-GIERISCH ALLOCATION B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18974 GARDENDALE-GIERISCH ALLOCATION C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18975 GARDENDALE-GIERISCH ALLOCATION D EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19023 GARDIEN EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16298 GARDIEN, KENT JR. DUBOSE, NE. (EDWARDS -A-) BC OPERATING, INC. 04291 GARDNER, E.S. CARRIZO, W. (2700 OLMOS) TORNADO ENERGY 08631 GARDNER, ET AL EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15497 GARLAND UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18006 GARNER MT. EDEN (CARRIZO-WILCOX, UP.) BASTROP ENERGY GROUP 14081 GARNER & SMITH MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01241 GARNER, E. G. TENNEY CREEK ALLTEX OPERATING COMPANY 07721 GARNER, JOHN N. PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 05374 GARRETT-SMITH EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17631 GARRISON PILGRIM (AUSTIN CHALK) ATTIS OPERATING I INC. 13438 GARWOOD LULING BRANYON R 40 EXC NORTH SOUTH OIL, LLC 19320 GARWOOD, R. P. LULING-BRANYON EAGLE FORD OIL CO., INC. 03633 GARWOOD, ROBERT P. LULING-BRANYON TEN-KEY INC. 08792 GARY EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17908 GARY PENA CREEK (GEORGETOWN) EL INDIO ENERGY LLC 14797 GARY B PENA CREEK (GEORGETOWN) EL INDIO ENERGY LLC 19367


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GARY, M.E. EL INDIO, N.(OLMOS) MAVERICK OSAGE OIL COMPANY, INC. 11653 GARZA CARLOTA (GEORGETOWN) GARZA OIL & GAS LLC 17013 GARZA FAIRFIELD PREMIER MINERALS, INC. 18222 GARZA (R) FAIRFIELD DRACHEN OIL COMPANY 14479 GARZA B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16824 GARZA B-JLH LIC C-E ALLOC D EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19720 GARZA RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16329 GARZA UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16549 GARZA-KODACK UNIT NO. 1 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16969 GARZA, RAYMOND SOMERSET GINCO OPERATING CO. 10766 GATES SOMERSET K.A. BARNES OIL & GAS OPER, LLC 14030 GATES O TR2 CATARINA, SW. (OLMOS) LEWIS PETRO PROPERTIES, INC. 14824 GATES RANCH CATARINA, SW. (OLMOS) LEWIS PETRO PROPERTIES, INC. 14359 GATES RANCH GATES CATARINA LEWIS PETRO PROPERTIES, INC. 04647 GATES, BONNIE PEARSALL (AUSTIN CHALK) GATES OPERATING COMPANY 12675 GATES, J. L. CHARLOTTE (NAVARRO) JM CALK OPERATING, LLC 03316 GATHINGS/HAECKER LA VERNIA G6 ENTERPRISES 07195 GATLIN PILGRIM (BUDA) LONESTAR OPERATING, LLC 12597 GAWLIK EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16170 GAWLIK B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16296 GAWLIK NORTH UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 19969 GAWLIK SOUTH UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 19970 GAYLE OMEGA "1985" SOMERSET GREAT PLAINS RESOURCES, INC. 11448 GAYLE, SUSIE KNIGHT SOMERSET GREAT PLAINS RESOURCES, INC. 09223 GAZELLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17983 GEARY WATTS LAS EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 15757 GEARY WATTS-STRAIT LAS EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 19797 GEARY, A. F. LULING-BRANYON GINCO OPERATING CO. 03953 GEARY, A. F., -A- LULING-BRANYON GINCO OPERATING CO. 01127 GEBERT-MUMME UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16818 GEMINI 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18727 GENE PALMIERI CHICON LAKE RLU OPERATING, LLC 18385 GENTRY A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14884 GENTRY 'A' A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 17733 GENTRY RANCH A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 18092 GEORG EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 15526 GEORG UNIT 3 FIRST SHOT (AUSTIN CHALK) TEXATRON PETROLEUM LLC 14175 GEORGE GU A EAGLEVILLE (EAGLE FORD-1) LEWIS PETRO PROPERTIES, INC. 18676 GEORGE LONG B EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 16177 GEORGE MACKEY RIDDLE MULTIPAY ENERGY, INC. 19063 GEORGE R. BROWN DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 17666 GEORGE UNIT FIRST SHOT (AUSTIN CHALK) TEXATRON PETROLEUM LLC 14179 GEORGE UNIT 1 FIRST SHOT (AUSTIN CHALK) TEXATRON PETROLEUM LLC 13177 GEORGE, BURTON O. BIG WELLS (SAN MIGUEL) 1776 ENERGY OPERATORS, LLC 14400 GEORGE, BURTON O. JR. PEARSALL (AUSTIN CHALK) 1776 ENERGY OPERATORS, LLC 12835 GEORGE, ELIZABETH ET AL BLACK ROCK (SAN MIGUEL) BROWN, JOHN OIL CO. 08176 GERACI J.Y.F. (BUDA) BODDEN PRODUCTION 07861 GERACI MARCELINA CREEK (AUSTIN CHALK) BODDEN PRODUCTION 13045 GERACI II J.Y.F. (BUDA) BODDEN PRODUCTION 12016 GERDES, G.H. -A- SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 06986 GERDES, GARWOOD MINERVA-ROCKDALE TEJAS EXPLORATION INC. 07142


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GERHARDT, HAIDEE SOMERSET PETROSAURUS, INC. 03365 GERKE EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 18333 GERKE HC1 LAS B2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19625 GERKE HC2 LAS B2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19669 GERKE HC6 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19668 GERKE HC7 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19624 GERKE UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16718 GERKE UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16713 GERLICH-TAYLOR LA VERNIA SMITH/A.P.H. VENTURE 08479 GERLICH, JOE LA VERNIA TEXAS BISON PETROLEUM 05067 GEROLD SWD EAGLEVILLE (EAGLE FORD-1) PRODUCED WATER TRANSFER1 LLC 18095 GERTH, R. -A- LA VERNIA RAMPAGE EXPLORATION, INC. 07784 GERTH, RENO LA VERNIA RAMPAGE EXPLORATION, INC. 06884 GESCHEIDLE, ELVIN PEACH CREEK (AUSTIN CHALK) CEI OPERATING LLC 18856 GESCHEIDLE, ELVIN PEACH CREEK (BUDA) DOMINION PRODUCTION COMPANY, LLC 15210 GEYER SOMERSET GREAT PLAINS RESOURCES, INC. 10769 GEYER -A- SOMERSET PETROLEUM OILFIELD SERVICES INC. 11189 GEYER -B- SOMERSET PETROLEUM OILFIELD SERVICES INC. 11190 GEYER -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11118 GEYER -D- SOMERSET PETROSAURUS, INC. 11000 GEYER/LEHMBERG SOMERSET BAYSHORE OPERATING COMPANY 11121 GEYER/LEHMBERG -B- SOMERSET BAYSHORE OPERATING COMPANY 11123 GEYER, FRANK CHARLOTTE, NORTH BLUE QUAIL OIL CO. 04677 GEYER, FRANK A. CHARLOTTE, NORTH RICKAWAY ENERGY, CORP. 07750 GHOST TOWN UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18239 GIBBONS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18251 GIBSON DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16343 GIBSON SOUTH DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16219 GIBSON SOUTH UNIT 0 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19492 GIBSON SOUTH UNIT 1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19493 GIBSON SOUTH UNIT 10 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19395 GIBSON SOUTH UNIT 10 DIM LORENZO (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 19344 GIBSON SOUTH UNIT 11 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18025 GIBSON SOUTH UNIT 12 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18026 GIBSON SOUTH UNIT 13 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18027 GIBSON SOUTH UNIT 14 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18440 GIBSON SOUTH UNIT 15 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18450 GIBSON SOUTH UNIT 16 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18477 GIBSON SOUTH UNIT 17 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18453 GIBSON SOUTH UNIT 18 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18445 GIBSON SOUTH UNIT 19 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18446 GIBSON SOUTH UNIT 2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19496 GIBSON SOUTH UNIT 20 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19404 GIBSON SOUTH UNIT 3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19089 GIBSON SOUTH UNIT 4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19057 GIBSON SOUTH UNIT 5 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19056 GIBSON SOUTH UNIT 6 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19416 GIBSON SOUTH UNIT 6 DIM LORENZO (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 19284 GIBSON SOUTH UNIT 7 DIM LORENZO (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 19283 GIBSON SOUTH UNIT 8 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17447 GIBSON SOUTH UNIT 9 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19394


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GIBSON SOUTH UNIT 9 DIM LORENZO (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 19282 GIBSON UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16684 GIBSON UNIT 1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19943 GIBSON UNIT 2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19913 GIDEON, T. C. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01066 GIDLEY PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12787 GIERISCH UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17545 GIERISCH UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16602 GIESE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15848 GIESE-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15913 GIL PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15714 GILBERT FAIRFIELD RPG OPERATING LLC 11623 GILBERT MARSHA SKYTOP OIL & GAS 07134 GILBERT NORTH UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16886 GILBERT-LUNA A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17228 GILBERT-LUNA B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17261 GILBERT-MORELLO A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18958 GILBERT-MORELLO B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18966 GILL TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16665 GILLETT SWD FIRST SHOT (AUSTIN CHALK) EVX MIDSTREAM PARTNERS II LLC 16756 GILLIAM GINNY JOHNSON (NAVARRO A) SELLERS LEASE SERVICE, INC. 11579 GILLIAM MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 17833 GILLILAND SOMERSET GLOBAL TRAINING ACADEMY, INC. 10734 GILLILAND I PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13245 GILLILAND II PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13315 GINN-FOSTER LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 11711 GISE, LAWRENCE PEARSALL (AUSTIN CHALK) NAVAJO EXPLORATION, INC. 12765 GLACIER A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19658 GLACIER B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19670 GLACIER C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19651 GLASS EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17027 GLASS B1 HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 19443 GLASS B2 HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 19477 GLASS, J. DUNLAP G & D PETROLEUM CO. 08076 GLASS, WILLIAM B. PEACH CREEK (AUSTIN CHALK) TIDELANDS PRODUCTION, INC. 12458 GLASSCOCK DOS ARROYOS (SAN MIGUEL) RETAMA OIL CORPORATION 05455 GLASSCOCK RANCH EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 16383 GLASSCOCK RANCH A PEARSALL (AUSTIN CHALK) MATADOR PRODUCTION COMPANY 09813 GLASSCOCK, LETA LETA (OLMOS) MATADOR PRODUCTION COMPANY 09289 GLASSCOCK, LETA LETA (SAN MIGUEL) MATADOR PRODUCTION COMPANY 09912 GLASSCOCK, V.J. ET AL DEVILS RIVER (PALUXY) PETRO IMPERIAL CORP. 02545 GLAZNER, EDGAR R. PEARSALL (AUSTIN CHALK) MID-WESTERN OPERATING COMPANY 11947 GLAZNER, EDGAR R. PEARSALL (AUSTIN CHALK) MID-WESTERN OPERATING COMPANY 12401 GLEN LUMPKINS MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 17149 GLENDALE SCHOOL LULING-BRANYON EAGLE FORD OIL CO., INC. 01017 GLENDALE SCHOOL LULING-BRANYON E & P OIL & GAS COMPANY 03823 GLENEWINKLE UNIT CINDY ANN (AUSTIN CHALK, OIL) NORDSTRAND ENGINEERING, INC. 13925 GLORIA WHEELER 'C' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16664 GLORIA WHEELER 'D' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16668 GLORIA WHEELER 'E' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16670 GLORIA WHEELER 'F' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 17713


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GLORIA WHEELER "A" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15671 GLORIA WHEELER "B" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15647 GLORIANA POTH -A- UNIT GLORIANA (POTH -A-) FORT WORTH NATURAL GAS, INC. 03992 GLOVER SALT FLAT, WEST E. T. OIL COMPANY 06634 GLOVER -A- SALT FLAT, WEST E. T. OIL COMPANY 07101 GLOVER UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15529 GLOVER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17608 GLOVER-RAYES A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15527 GLOVER-RAYES ALLOC A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19609 GLOVER-RAYES B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15925 GLOVER-SADLER SOMERSET SEEKER OIL COMPANY, INCORPORATED 11263 GLOVER, VANCE SALT FLAT, WEST E. T. OIL COMPANY 06633 GOBBLER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16257 GODDEN, AMZI TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05515 GODDEN, C.C. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06769 GOFORTH SWD PEARSALL (AUSTIN CHALK) SELECT ENERGY SERVICES, LLC 12424 GOLDEN EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 16084 GOLDEN MCKEAN 1H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14685 GOLDEN-MCKEAN LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01084 GOLDENEYE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17009 GOLLUM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18484 GOMEZ SOMERSET SEAGULL OPERATING CO., INC. 10881 GOMEZ -A- SOMERSET SEAGULL OPERATING CO., INC. 10887 GOMILLION LYTTON SPRINGS GAUGE OIL COMPANY 01164 GOMILLION ESTATE LYTTON SPRINGS D-III PETROLEUM, INC. 11472 GOMILLION, F. A. LYTTON SPRINGS DARST CREEK OIL COMPANY 01159 GOMILLION, F. A. LYTTON SPRINGS GAUGE OIL COMPANY 01161 GOMILLION, F. A., 60 AC. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 01148 GOMO LA VERNIA ENERGON3 09267 GONZALES A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 15042 GONZALES EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15814 GONZALES JOURDANTON (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 17687 GONZALES JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 17462 GONZALES MINERVA-ROCKDALE TRUSTAR OPERATING COMPANY INC. 19222 GONZALES PEARSALL (BUDA, S.) CML EXPLORATION, LLC 19439 GONZALES ET AL UNIT PEARSALL (AUSTIN CHALK) PROGENIES OPERATING LLC 14535 GONZALES SWD EAGLEVILLE (EAGLE FORD-1) NGL WATERSOLUTIONS EAGLEFORD,LLC 15615 GONZALES, RUDY H. DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 08803 GONZALES, SANTIAGO SOMERSET GREAT PLAINS RESOURCES, INC. 11051 GONZALES, SANTIAGO -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11052 GONZALES, SANTIAGO ET UX, ET AL SOMERSET GREAT PLAINS RESOURCES, INC. 07246 GONZALEZ UNIT A DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15689 GONZO PEACH CREEK (AUSTIN CHALK) JWO ENERGY, LLC 18388 GONZO HUNTER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15700 GONZO NORTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15322 GONZO SOUTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16995 GONZO UNIT A EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 17283 GONZO UNIT B EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 17294 GONZO UNIT E EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 17621 GOOD PEARSALL (AUSTIN CHALK) PRO FIELD SERVICES, INC. 10614 GOOD PEARSALL (AUSTIN CHALK) TERRAFINA ENERGY, LLC 12413


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GOOD -A- PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 07580 GOODE, ADDIE BELL PEACH CREEK (AUSTIN CHALK) PIE OPERATING, LLC 17435 GOODE, ADDIE BELL PEACH CREEK (EDWARDS) PIE OPERATING, LLC 16223 GOODWIN BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16056 GOODWIN EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16476 GOODWIN, N. L. LEMING (2934 SAND) WSM 09542 GOODWYN, A.B. SOMERSET CALK OPERATING, LLC 01653 GOOSE PEARSALL (BUDA, S.) TRINITY OPERATING (USG), LLC 19100 GORDEN KAYE (NAVARRO) CALTEX ENERGY CO. 02390 GORDEN "P-5" SOMERSET EMERALD BAY ENERGY, INC. 11177 GORDEN S. -A- SOMERSET PETROSAURUS, INC. 11001 GORDON A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18122 GORDON B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17807 GORDON C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17808 GORDON TRUST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15893 GORDON, L. KAYE (NAVARRO) CALTEX ENERGY CO. 01891 GORGON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17000 GORZELL, BEN KATHLEEN ANN (REEF) UNDERBRINK OIL 11558 GOSSETT ADAMS (BUDA) BLACK CREEK OIL COMPANY, LLC 05197 GOSSETT ADAMS (NAVARRO, UPPER) BLACK CREEK OIL COMPANY, LLC 18645 GOSSETT-SHANNON PLEASANTON, E. (ESCONDIDO) MAZCO ENERGY LLC 14694 GOSSETT, JO LE PLEASANTON, SE. (EDWARDS) WILEY LEASE CO., LTD. 12259 GOTT, SAM FAIRFIELD CALK, ROGER D. 08247 GOUGER PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12390 GPC GEMINI BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16992 GPC PAN AM BRISCOE RANCH (EAGLEFORD) PERDIDO ENERGY, LLC 15362 GPC PEDRO MORALES UNIT BRISCOE RANCH (EAGLEFORD) PERDIDO ENERGY, LLC 15651 GRABENER - PAYNE UNIT MILBUR (NAVARRO) MUTUAL OIL OF AMERICA, INC. 04351 GRACE UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 17709 GRAEF, STEPHEN B. WILDCAT GRAEF, STEPHEN B. 09186 GRAHAM PILGRIM (AUSTIN CHALK) AUTERRA OPERATING, LLC 15653 GRAHAM UNIT EAGLEVILLE (EAGLE FORD-1) TRI-FORCE EXPLORATION, L.L.C. 17854 GRAHAM-ASHLEY UNIT MILANO (GEORGETOWN) EXPLORATION TECHNIQUES INC. 09256 GRAHAM-DEBAULT UNIT CHEROKEE (EAGLE FORD) CXL ENERGY LLC 15220 GRAHAM-ELKINS SALT FLAT TEN-KEY INC. 08788 GRAHAM, A.N. CHEROKEE (NAVARRO) MICRO OPERATING, INC. 04675 GRAHAM, A.N. -B- CHEROKEE (NAVARRO) MICRO OPERATING, INC. 04812 GRAHAM, J. J. UNIT SALT FLAT KIDD PRODUCTION CO. 03087 GRAN TORINO A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16708 GRANBERG VERNA (ANACACHO) SEEKER OIL COMPANY, INCORPORATED 03000 GRAND SLAM UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13843 GRANDBERRY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16939 GRASS FARM UNIT BRISCOE RANCH (EAGLEFORD) ATLAS OPERATING LLC 15752 GRAY UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16739 GRAY UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16700 GRAY, CLARA UNIT -1- TAYLOR-INA PRODUCTION RESOURCES, INC. 04731 GRAY, FLOY SALT FLAT ENHANCED RS, INC. 01522 GRAY, FLOY -A- SALT FLAT B. J. P. OPERATING 01496 GRAY, FLOY -C- SALT FLAT B-3 OIL CO. 01480 GRAY, FLOYD SALT FLAT J. H. W. INC. 05297 GRAY, G.C. -A- DARST CREEK (EDWARDS) OCCIDENTAL ENERGY COMPANY, INC. 07934


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GRAY, JOHN F. SOMERSET RAINER ENERGY, INC. 11201 GRAYBURG-MCKEAN LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01073 GRAYLEAF 1H BRISCOE RANCH (EAGLEFORD) ROSEWOOD RESOURCES, INC. 18748 GREEN SWAIM EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 15764 GREEN, NOBLE J. CHICON LAKE RLU OPERATING, LLC 10061 GREEN, NOBLE J. I CHICON LAKE K.A. BARNES OIL & GAS OPER, LLC 08252 GREENWOOD, JAMES SPILLER DELRAY OIL, INC. 01672 GREINER, FRED P. DUNLAP GEOMEG ENERGY OPERATING CO., LLC 03841 GREINER, R. A. MILL CREEK PETROSAURUS, INC. 10363 GRELLE, BRIAN LA PRYOR (SAN MIGUEL) CIVCO OPERATING LLC 14918 GREY REEF UNIT NO. 1 WILDCAT TREADSTONE ENERGY PRTNR OP, LLC 14331 GRIFFIN FIRST SHOT (AUSTIN CHALK) LONESTAR OPERATING, LLC 13618 GRIFFIN OIL UNIT PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 13001 GRIFFIN-CHAPEL AME CHURCH MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 01180 GRIFFIN-DEATLEY UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15690 GRIFFIN-DEATLEY UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15606 GRIFFIN-RUDDOCK OIL UNIT PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 13480 GRIFFITH SOMERSET GREAT PLAINS RESOURCES, INC. 11007 GRIFFITH -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11152 GRIFFITH, B.J. SOMERSET GREAT PLAINS RESOURCES, INC. 07480 GRINGITA DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16908 GRINGITA UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17493 GRINGITA UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16916 GRISSOM PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16955 GROCE, J. G. ET AL PENA CREEK (SAN MIGUEL 3RD) IMPERATOR OPERATING, LLC 04323 GROSS, J. C. MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01273 GROSS, JOSEPH CHICON LAKE SHOOTIN STAR OIL, L.L.C. 02224 GROSSIE PEARSALL (AUSTIN CHALK) MUELLER EXPLORATION, INC. 16208 GROTHUES,G B OIL #1 FAIRFIELD GROTHUES, G B OIL 02660 GROTHUES,G B OIL #2 FAIRFIELD GROTHUES, G B OIL 06188 GROUSE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17868 GROUSE A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17925 GRUBBS & HOLLOWAY FAIRFIELD RLU OIL & GAS, INC. 04742 GRUBBS, W.E. ET AL LA VERNIA TANGLEHEAD OPERATING, LLC 00831 GRUN, W. J. GLENN POTH (POTH SAND) ENERGON3 14143 GSH UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15642 GUADALUPE CO. TURMAN DARST CREEK (BUDA) H & K OIL COMPANY (A) 02819 GUADALUPE UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18615 GUADALUPE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15916 GUAJARDO, AGUSTINE FAIRFIELD GREAT PLAINS RESOURCES, INC. 06694 GUAJILLO WILDCAT BLACKBIRD OIL & GAS, LLC. 16211 GUAJILLO TAYLOR-INA BLACKBIRD OIL & GAS, LLC. 18082 GUAJILLO EAST EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17741 GUAJILLO UNIT 16 NORTH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19500 GUAJILLO UNIT 16 SOUTH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 18907 GUAJILLO UNIT 7 SOUTH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19095 GUAJILLO UNIT 8 NORTH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19403 GUAJILLO UNIT 8 SOUTH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19278 GUAJILLO UNIT 9 NORTH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 18235 GUAJILLO WEST EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19097 GUBBELS EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17917


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GUBBELS SAN MIGUEL CREEK (AUSTIN CHALK) ENERQUEST OPERATING L.L.C. 15059 GUBBELS SAN MIGUEL CREEK (WILCOX CONS.) ENERQUEST OPERATING L.L.C. 14669 GUBBELS UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18101 GUBBELS UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18640 GUBBELS UNIT C EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 19014 GUBBELS UNIT D EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18893 GUENTHER SOMERSET SEAGULL OPERATING CO., INC. 10880 GUENTHER -A- SOMERSET SEAGULL OPERATING CO., INC. 10888 GUERRA, SOLOMON SOMERSET SOUTHWEST LOOP 1604, LTD. 10872 GUINN, H.B. LULING-BRANYON GUINN OIL COMPANY 09719 GULLEY, T. R. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 12713 GUNN MIDWAY (2300 OIL) SHELDON RESOURCES, L.P. 14377 GUS T. BROWN LULING-BRANYON ENHANCED RS, INC. 05380 GUTIEREZ, J. I. FENTRESS (1750) LAHOMA PROPERTIES, INC. 14023 GUTIERREZ, FELIPE SOMERSET TIKI OIL & GAS, LLC 07438 GUTIERREZ, INEZ SOMERSET PETROSAURUS, INC. 06473 GUTIERREZ, INEZ -B- SOMERSET PETROSAURUS, INC. 09806 GUTIERREZ, ROBERT MARTIN HEIRS (ESCONDIDO) VIRTEX OPERATING COMPANY, INC. 10393 GUTIERREZ, ROBERT TRI BAR (OLMOS) VIRTEX OPERATING COMPANY, INC. 16980 GUTIERREZ, ROBERT TRI BAR, NORTH (OLMOS) VIRTEX OPERATING COMPANY, INC. 10418 GUTTMAN A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16400 GUTTMAN ALLOCATION A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19895 GUTTMAN B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17295 GUTTMAN PSA EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19890 GUY BOB FRO BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 18291 GUY BOB UNIT FRO BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19415 GW-SCULL, A. GLENN POTH (POTH SAND) ELAM OIL COMPANY LLC 14119 GWE - WILMETH PEARSALL (AUSTIN CHALK) SEDCO RESOURCES INC 13301 H & O PEARSALL (NAVARRO SAND) BIGFOOT OIL LLC 13954 H & P PARTNERS ACLETO CREEK (POTH A) H & P PARTNERSHIP 14114 H WILSON UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16801 H WILSON UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16783 H. A. STILES THRALL P&F OPERATIONS, LLC 17835 H. D. STOREY UNIT STOREY (3940) VIRTEX OPERATING COMPANY, INC. 14034 H. E. STUMBERG, JR. BRISCOE RANCH (EAGLEFORD) CHOYA OPERATING, LLC 17072 H. MOCZYGEMBA A EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16855 H. WILLIE 2-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14978 H.A. GRAY, ET AL UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16098 H.E. UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16182 H.E.RICHTER BRISCOE RANCH (EAGLEFORD) BRITANCO, L.L.C. 19058 H.F.S. EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15293 H.O.P.E #I NIXON, EAST (6100) CEI OPERATING LLC 06300 H&F PROPERTIES -C- ALLIGATOR SLOUGH (ELAINE) LIVE OAK GAS COMPANY 06997 H&F PROPERTIES -CB- UNIT ALLIGATOR SLOUGH (ELAINE) MCDAY ENERGY CORP. 07626 H&F PROPERTIES -E- ALLIGATOR SLOUGH (ELAINE) DIVERSIFIED O&G PROD. CO., INC. 06152 H&F PROPERTIES "CC" ALLIGATOR SLOUGH (ELAINE) MCDAY ENERGY CORP. 08472 H&F PROPERTIES "CE" UNIT ALLIGATOR SLOUGH (BRACERO) OFFSPRING WELL SALVAGE 12578 H&F PROPERTIES "E-I" ALLIGATOR SLOUGH (ELAINE) MCDAY ENERGY CORP. 13988 H&F PROPERTIES "E-II" ALLIGATOR SLOUGH (ELAINE) BP PROD. CORP. 13989 H&F PROPERTIES "EB" UNIT ALLIGATOR SLOUGH (ELAINE) MCDAY ENERGY CORP. 06428 H&F PROPERTIES 38-37 BRACERO, NE. (2ND OLMOS) MCDAY ENERGY CORP. 12801


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ H-OIL COMPANY LULING-BRANYON OFFSPRING WELL SALVAGE 04506 HAASS, JEANNE C. TAYLOR-INA TAMPKE SERVICE CO. 05518 HAASS, PAUL F. JR. "A" DUNLAP LECHUZA OIL & GAS, LLC 03797 HAASS, R. R. TAYLOR-INA NEV-TEX OIL & GAS, INC. 02168 HABERMACHER, CHARLES A. KAYE (NAVARRO) SAN MIGUEL EXPLORATION COMPANY 10546 HABY PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16153 HABY-MANGOLD CHICON LAKE GENIE OIL COMPANY 10327 HABY, ERIC -A- TAYLOR-INA SWEETFIELD INVESTMENTS, INC. 08963 HACKBERRY UNIT SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 07943 HAECKER FAIRFIELD PREMIER MINERALS, INC. 17533 HAECKER, JACK LA VERNIA G6 ENTERPRISES 09369 HAEGELIN, ALBERT A. TAYLOR-INA WIGINGTON, ROBERT & SONS 12144 HAESE EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15467 HAGAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18822 HAGEN EF EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15296 HAGEN RANCH PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 13832 HAGEN RANCH UNIT PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 12996 HAGGARD -BRS- FAIRFIELD HAGGARD OPERATING GROUP/OIL 11444 HAGGARD -JRJ- FAIRFIELD HAGGARD OPERATING GROUP/OIL 11323 HAGGARD -TPA- FAIRFIELD HAGGARD OPERATING GROUP/OIL 11438 HAGGARD RANCH FAIRFIELD HAGGARD OPERATING GROUP/OIL 09968 HAGGARD-HARBO "1985" FAIRFIELD HAGGARD OPERATING GROUP/OIL 11403 HAGIST LOMA ALTA (WILCOX C) BRITANCO, L.L.C. 19308 HAGIST RANCH LOMA ALTA (WILCOX) BRITANCO, L.L.C. 15818 HAGIST RANCH LOMA ALTA (WILCOX F) CANNAN, MORRIS 04147 HAGIST RANCH -F- LOMA ALTA (WILCOX C) BRITANCO, L.L.C. 19291 HAGIST RANCH, INC. SAN JOSE DOWNING, PATRICK H. 02393 HAIRRELL, GLADYS TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05830 HAIRRELL, GLADYS -C- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05946 HAIRSTON C UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19807 HALBARDIER UNIT ECKERT BRIGHT HAWK OPERATING COMPANY 15130 HALE FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 15202 HALE, BILLY FIGHT & HOLLER (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 14559 HALE, CLARENCE FAIRFIELD RPG OPERATING LLC 07571 HALEY PEARSALL (BUDA, S.) HUGHES, DAN A. COMPANY, L.P. 18587 HALEY-TARH PEARSALL (BUDA, S.) TRINITY OPERATING (USG), LLC 17784 HALEY, C.R. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 12421 HALEY, MARY FIRST SHOT (AUSTIN CHALK) BES, ENVIRONMENTAL SERVICES,INC. 13198 HALFF & OPPENHEIMER PEARSALL (BUDA LIME) BIGFOOT OIL LLC 14165 HALFF & OPPENHEIMER PEARSALL (NAVARRO SAND) BIGFOOT OIL LLC 01364 HALFF & OPPENHEIMER -C- PEARSALL (AUSTIN CHALK) MAVERICK ENERGY GROUP, INC. 04586 HALL-MANNING EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 18030 HALL, DILLON SALT FLAT PETROSAURUS, INC. 09367 HALL, DILLON SALT FLAT RAFTER-J OIL COMPANY, INC. 08947 HALL, LEE A. CHICON LAKE WILSON L. S. 05207 HALL, RAY W. MATTHEWS MAGNUM OILFIELD SERVICES LLC 01175 HALM, BONNYE H. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 07704 HALSELL HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 18882 HALSELL PENA CREEK (SAN MIGUEL 3RD) ENDEAVOR NATURAL GAS, LP 19794 HALSELL SACATOSA (SAN MIGUEL #1 SAND) SEAGULL OPERATING CO., INC. 02655 HALSELL (40) SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 06553


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HALSELL A HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 19050 HALSELL RANCH -99- SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 14374 HALSELL-UNION SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 03943 HAMBY LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 10396 HAMBY -A- LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 10411 HAMBY -B- LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 13038 HAMBY -C- LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 10487 HAMBY -D- LEMING (2934 SAND) M & C OPERATING, LLC 10684 HAMILTON EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15568 HAMILTON MINERVA-ROCKDALE RED OAK OIL COMPANY, LLC 01202 HAMILTON -B- HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON OIL INC. 06881 HAMILTON "4C" HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON OIL INC. 13708 HAMILTON FEE HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON, J. R. 03742 HAMILTON RANCH HUGH FITZSIMMONS (SAN MIGUEL) SEAGULL OPERATING CO., INC. 13709 HAMILTON RANCH -50- PEARSALL (AUSTIN CHALK) HAMILTON, J. R. 12767 HAMILTON RANCH "A" HUGH FITZSIMMONS (SAN MIGUEL) SEAGULL OPERATING CO., INC. 06882 HAMILTON RANCH A HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 17339 HAMILTON RANCH AB HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 18087 HAMILTON RANCH AC HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 18098 HAMILTON RANCH B HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 19174 HAMILTON RANCH C HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 19140 HAMILTON UNIT A BRISCOE RANCH (EAGLEFORD) EL TORO RESOURCES LLC 19357 HAMILTON 1C HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON OIL INC. 13710 HAMILTON 3C HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON OIL INC. 13711 HAMILTON, GRACE SALT FLAT LEFT BEHIND RECOVERY, LLC 15734 HAMILTON, J. R. PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12764 HAMMAN SALT FLAT, WEST DJ EXPLORATION, INC. 06824 HAMMERHEAD DUNLAP BAIR'S LEASE SERVICE, INC. 15052 HAMMOND, ADA E. -B- HAMMOND (SAN MIGUEL NO 4) ARRCO OPERATING, LLC - 04165 HANING DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15959 HANING UNIT A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16849 HANING UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16898 HANSEN AC UNIT FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 16022 HANSEN KULLIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15402 HANSEN, ANTON WINTER GARDEN (OLMOS) SPUR OPERATING CO. 05444 HANSON, J.M. SALT FLAT (EDWARDS) HOLLUB, LAMBERT DRILLING COMPANY 13982 HANSON, R.B. SOMERSET GREAT PLAINS RESOURCES, INC. 10930 HAPP, JOHN FAIRFIELD HODGE, C. ENERGY INC. 08297 HARBER-BILLIE MIDWAY (2300 OIL) PETRO DELTA 12047 HARBER, V.F. A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 12363 HARDEMAN LULING-BRANYON IRON ORCHARD OPERATING LLC 06739 HARDEMAN-TURNER UNIT DUNLAP BLACKMAR, JIM OIL OPERATOR 06612 HARDEMAN, E. J. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01077 HARDEMAN, E. J., EST. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 03031 HARDEMAN, J. W. LULING-BRANYON CW DALCAN MANAGEMENT SVCS, LTD. 07983 HARDEMAN, L.A. DUNLAP BLACKMAR, JIM OIL OPERATOR 06357 HARDER, E.L. ET AL ACEITUNA (HARPER SD.) HUGHES RESOURCES, INC. 10471 HARDIN UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15828 HARDIN UNIT B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19141 HARDIN UNIT B EAGLEVILLE (EAGLE FORD-1) SN OPERATING, LLC 19144 HARDIN-RAYES UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15533


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HARDIN-SLAUGHTER UNIT SCOTTY (BARTOSH SAND) GREENWERKS OUTDOOR SERVICES LLC 01939 HARDIN, A. T. SCOTTY (BARTOSH SAND) GREENWERKS OUTDOOR SERVICES LLC 01568 HARDIN, A. T. STOCKDALE, W. (CHALK, UPPER) CROSSROADS MINERAL PROD., L.L.C. 03816 HARDIN, ETHEL STOCKDALE, W. (CHALK, UPPER) BRITANCO, L.L.C. 03875 HARDIN, T.Y. ESTATE LITTLE MAX (POTH SAND) DULA PRODUCTION, LLC 05728 HARDING UNIT NIXON AMPAK OIL COMPANY 14053 HARDY PEARSALL (AUSTIN CHALK) STP PRODUCTION, LLC 12375 HARDY GUS -D- SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 07610 HARDY, B. B. FLORESVILLE, E. (MIDWAY) A & C OIL COMPANY, LLC 04505 HARDY, GUS SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 11600 HARDY, GUS -A- SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 11601 HARDY, GUS -A- SALT FLAT LUTEX OIL, LTD. 07677 HARDY, GUS -B- SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 11602 HARDY, GUS -C- SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 08203 HARDY, GUS -D- SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 14129 HARDY, GUS -F- SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 05151 HARDY, SILVAN SOMERSET U. D. MAN, INC. 10964 HARGIS BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 18890 HARGROVE -C- BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 17650 HARGROVE RIVER B BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 17924 HARLAN A BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 19527 HARLAN RK BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 18196 HARLAN, R. K. PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 16215 HARLE COOKE RANCH (OLMOS) LEWIS PETRO PROPERTIES, INC. 14779 HARPER RANCH BRISCOE RANCH (EAGLEFORD) CALLON (EAGLE FORD) LLC 15968 HARPER RANCH PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17938 HARPER UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18535 HARPER UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16166 HARPER UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16511 HARPOLE, E. J. HARPOLE (OLMOS) STREIB, G.W. 04575 HARPOLE, E. J. HARPOLE (SAN MIGUEL) STREIB, G.W. 04534 HARRELL, W.M. CHARLOTTE (NAVARRO) EXXCEL OPERATING COMPANY 05164 HARRIS BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 18724 HARRIS EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18661 HARRIS EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 15840 HARRIS JOHN DEERING (AUSTIN CHALK) GINCO OPERATING CO. 03988 HARRIS PEARSALL (AUSTIN CHALK) OGOG OPERATING, LLC 15063 HARRIS PEARSALL (AUSTIN CHALK) RIO-TEX, INC. 12449 HARRIS PEARSALL (AUSTIN CHALK) VIA OIL COMPANY 13056 HARRIS "A" BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 18950 HARRIS "D" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05985 HARRIS A PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 05017 HARRIS A POOLED UNIT PEARSALL (AUSTIN CHALK) CHURCHILL OPERATING, LLC 13079 HARRIS B EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 17024 HARRIS OIL UNIT WILDCAT TXCO RESOURCES INC. 14921 HARRIS-G- PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 06861 HARRIS-LANCASTER PEARSALL (AUSTIN CHALK) AMERICAN DISPOSAL SERVICES,LTD 17715 HARRIS-MEYERS PEARSALL (AUSTIN CHALK) ENHANCED RS, INC. 13542 HARRIS-MEYERS -A- PEARSALL (AUSTIN CHALK) ENHANCED RS, INC. 13648 HARRIS, FREDERICK PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 13293 HARRIS, GARLAND V. SPILLER DELRAY OIL, INC. 01952


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HARRIS, GARLAND V. -A- LULING-BRANYON DELRAY OIL, INC. 03420 HARRIS, HARTFIELD, BROOKS -D- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 11455 HARRIS, HERMAN LULING-BRANYON ENERGON3 18904 HARRIS, HERMAN LULING-BRANYON GREAT PLAINS RESOURCES, INC. 03370 HARRIS, HERMAN -A- LULING-BRANYON WHITEHALL ROYALTY LLC 08502 HARRIS, J.W. -A- PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12479 HARRIS, J.W. -C- PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12462 HARRIS, JOHN W. (MEYERS) PEARSALL (AUSTIN CHALK) ENHANCED RS, INC. 12562 HARRIS, JULIA PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 15241 HARRIS, JULIA -A- PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 12329 HARRIS, MARTIN SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14424 HARRISON PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13778 HARRISON SALT FLAT, WEST E. T. OIL COMPANY 06805 HARRISON-DIX DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02931 HARRISON-DIX DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02792 HARRISON-VOGEL UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 18365 HARRISON, ROY S. SALT FLAT T. A. W. COMPANY 06309 HARROUN & HARROUN FEE FAIRFIELD NU OIL CO., INC. 02431 HART OIL UNIT PEACH CREEK (AUSTIN CHALK) EXPRESS OIL CO. 13061 HART, C. E. SPEARS (REKLAW) BLACKWELL, LOYD B. 02036 HART, HENRY COW CREEK (HOEGEMEYER 6548) HYTECH ENERGY CORPORATION 04667 HARTFIEL WILDCAT MAVERICK ENERGY & DEV. CORP. 14604 HARTFIELD LA VERNIA GREAT PLAINS RESOURCES, INC. 12052 HARTFIELD, F. -D- LA VERNIA ENERGON3 06209 HARTFIELD, F. ET AL -B- LA VERNIA ENERGON3 06057 HARTFIELD, FRAZIER LA VERNIA QUEST RESEARCH & DEV. CORP. 02314 HARTFIELD, FRAZIER -A- LA VERNIA ENERGON3 00866 HARTFIELD, LOLA LA VERNIA DONOCO OIL COMPANY 00839 HARTFIELD, LOLA LA VERNIA DONOCO OIL COMPANY 02860 HARTFIELD, MILLIE LA VERNIA DONOCO OIL COMPANY 00838 HARTFIELD, MILLIE LA VERNIA DONOCO OIL COMPANY 02672 HARTFIELD, MILLIE LA VERNIA EAGLE FORD OIL CO., INC. 11452 HARTFIELD, NEIMAH LA VERNIA DONOCO OIL COMPANY 02423 HARTMAN UNIT AC FASHING (AUSTIN CHALK) MARATHON OIL EF LLC 17838 HARTMAN, A. LA VERNIA DOEGE, DONALD 06464 HARTMANN EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15731 HARTMANN-EILERT EAGLEVILLE (EAGLE FORD-1) CL&F OPERATING LLC 17574 HARTMANN, ALVIN LA VERNIA DOEGE, DONALD 10109 HARTUNG C.J.P. (REEF) PRESSLY OIL INTEREST, INC. 09366 HARTUNG -A- C.J.P. (REEF) PRESSLY OIL INTEREST, INC. 09977 HARTUNG -A- SOMERSET SEAGULL OPERATING CO., INC. 01651 HARTUNG -D- C.J.P. (REEF) SEAGULL OPERATING CO., INC. 10073 HARTUNG HEIRS SOMERSET MORE TEXAS OIL 10740 HARTUNG HEIRS/PICKENS SOMERSET GREEN STAR 10758 HARTUNG HEIRS/PICKENS -B- SOMERSET GREEN STAR 08728 HARVEY JOHNSON EF UNIT EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 18201 HASKETT JUDGE MILLS (BRACERO - OIL) VICEROY PETROLEUM, LP 10610 HASLETT, MARTHA LOU CAMP FAIRFIELD HASLETT, TERRY E. 07924 HASSE SUTIL (REEF) TOBIN, MARK T. 11765 HASSE, W. C. BOWMAN (CARRIZO) AARONMARK SERVICES, LLC 00132 HASSE, W. C. -A- BOWMAN (CARRIZO) AARONMARK SERVICES, LLC 02020


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HASSE, W. C. -B- BOWMAN (CARRIZO) AARONMARK SERVICES, LLC 02021 HASSELL CHRISTIAN (6800) MCRAE DRILLING, INC. 13298 HASTINGS TENNEY CREEK BARROW, WILLIAM R. INTERESTS 08024 HASTINGS -B- ACLETO CREEK (POTH B) RED B OIL 09649 HASTINGS, DORA GLEN HUMMEL, SW. (POTH B) WTXR OPERATING (TEXAS), INC. 03613 HASTINGS, W. C., JR. GLEN HUMMEL (POTH -B-) ENERGON3 03541 HAT CREEK HM 05 INDIO TANKS (PEARSALL) D90 ENERGY, LLC 18845 HATCH DIM BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 15353 HATCH DIM "C" BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19998 HATCH EAST DIM BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 15597 HATCH RANCH PEARSALL (AUSTIN CHALK) BHEC CORPORATION 13312 HATCH UNIT A BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 17168 HATCH, G.W. PEARSALL (AUSTIN CHALK) GULF OIL & REFINING COMPANY 12304 HATCHETT, J. SOMERSET TEXAS SECONDARY OIL CORPORATION 10933 HATHAWAY, T C LA VERNIA ALCORN ENERGY, L.L.C. 05913 HATHAWAY, T. C. LA VERNIA SOURCE PETROLEUM INC. 00858 HAUG-KIESCHNICK AC UNIT 33 PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17609 HAUG-KIESCHNICK UNIT 33 BRISCOE RANCH (EAGLEFORD) TRINITY OPERATING (USG), LLC 15779 HAUG-KRUEGER AC UNIT 33 PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17861 HAUG-KRUEGER UNIT NO. 33 BRISCOE RANCH (EAGLEFORD) TRINITY OPERATING (USG), LLC 15753 HAUSSER BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 17183 HAVERKAMP, KENNETH MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 01183 HAVERLAH A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 19873 HAVERLAH B EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 19918 HAVERLAH, LUCILLE HASSE (BUDA) K & R OIL INC. 09502 HAWKBILL UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18487 HAWKEYE EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19323 HAWKEYE C EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19644 HAWKEYE D EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 19643 HAWKINS PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12465 HAWKINS -A- PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12848 HAWN DICKSON EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15705 HAWN HOLT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15380 HAYDEN, CLINTON LEMING (2934 SAND) GINCO OPERATING CO. 08938 HAYDENS EAGLEVILLE (EAGLE FORD-1) BXP OPERATING, LLC 17863 HAYES UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16125 HAYES, G. L. CARRIZO SILVERBOW RESOURCES OPER, LLC 15194 HAYES, G. L. EF EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 15379 HAYNES EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15269 HAYNES 'A' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15917 HB UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16255 HBC UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17373 HBR BRISCOE RANCH (EAGLEFORD) BRC OPERATING COMPANY LLC 15824 HBR PEARSALL (BUDA, S.) BRC OPERATING COMPANY LLC 17901 HCE BB 01 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18633 HCE BB 03 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18635 HCE BB 05 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18730 HCE BB 05N BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 19080 HCE BB 05S BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 19079 HCE CR 01 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18791 HCE HM 03N BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 19767


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HCE HM 03S BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 19768 HCE HM 04 BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 18945 HCE HM 05 BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 19133 HCE HM 06 BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 19337 HCE HM 07 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18734 HCE HM 08 PEARSALL (BUDA, S.) D90 ENERGY, LLC 17712 HCE HM 09 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18646 HCE HM 10 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18660 HCE HT 01 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18654 HCE HT 02 BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 18829 HCE HT 02 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18495 HCE HT 03 PEARSALL (BUDA, S.) D90 ENERGY, LLC 18652 HCE JN 01 BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 19148 HCE ST 01 BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 18969 HCE ST 02 BRISCOE RANCH (EAGLEFORD) D90 ENERGY, LLC 19764 HEARD BOWER CENTRAL UNIT EAGLEVILLE (EAGLE FORD-1) TEAL OPERATING, LLC 15822 HEARD BOWER EAST UNIT EAGLEVILLE (EAGLE FORD-1) TEAL OPERATING, LLC 15799 HEARD BOWER WEST UNIT EAGLEVILLE (EAGLE FORD-1) TEAL OPERATING, LLC 15760 HEARNE DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16198 HEARNE UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16616 HEBBE COUPLAND, E. (SERPENTINE) BACHMEYER, MARVIN 04652 HEBERER, GUS SOMERSET K.A. BARNES OIL & GAS OPER, LLC 10931 HEDGEHOG UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18357 HEFFERNAN A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17001 HEFFERNAN B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17113 HEICKMAN SOMERSET RAINER ENERGY, INC. 10748 HEICKMAN -A- SOMERSET SEAGULL OPERATING CO., INC. 10840 HEICKMAN, W. M. SOMERSET SEAGULL OPERATING CO., INC. 04079 HEILIGMAN, JIMMIE ET AL BILL RICHARDSON (ESCONDIDO) 3 W INVESTMENTS LLC 10580 HEINEN, D. D. COUGHRAN (AUSTIN CHALK) LPG ENERGY COMPANY 05209 HEINEN, D.D. HOLLOWAY, EAST (BUDA) LPG ENERGY COMPANY 05131 HEINSOHN-KREBS OIL UNIT MARCELINA CREEK (AUSTIN CHALK) RENCO ENTERPRISES 08881 HEIRHOLZER, CLIFFORD HIGGINS (ESCONDIDO) RICKAWAY ENERGY, CORP. 09177 HEIRHOLZER, J.C. ET AL SUTIL (REEF) PUMP-N-PRODUCTION, LLC 06269 HEISER PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 17926 HEISER UNIT PEARSALL (AUSTIN CHALK) SOUTH COAST OIL & GAS CO. 12705 HEITMAN, JOSEPH J. MINERVA-ROCKDALE WIGGINS OIL CO. 07147 HEITZ PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 16411 HEITZ PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19400 HEITZ 302 PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 17732 HEITZ 303 PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 16293 HEITZ, B.M. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 12350 HELMCAMP KING UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17173 HELMCAMP KING UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17217 HELMCAMP STATE DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16346 HELMCAMP STATE HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19559 HELMCAMP STATE UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16332 HELMCAMP STATE UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16300 HELMCAMP STATE UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16299 HEMINGWAY A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19813 HEMINGWAY B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19817


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HEMINGWAY C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19818 HEMINGWAY D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19819 HEMME METCALFE FENTRESS (1750) CASTILLO OIL COMPANY LLC 15290 HEMPHILL, CLAYTON ET AL RIDDLE MULTIPAY ENERGY, INC. 18826 HENDERSON CLAY (BUDA) FRAZIER EXPLORATION PARTNERS,LLC 18906 HENDERSON PEARSALL (AUSTIN CHALK) CHRISTICO PETROLEUM COMPANY 12915 HENDERSON WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01768 HENDERSON - STATE CAMPANA, SOUTH CAMCO SALTWATER TRANSPORT,L.L.C. 15058 HENDERSON -A-2- MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 10722 HENDERSON -B- MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 10197 HENDERSON -B- WEIGANG ACOCK/ANAQUA OPERATING CO., LP 14218 HENDERSON -B- (MPM) MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 10163 HENDERSON, JOHN -A- MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 09580 HENDERSON, JOHN ETAL MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 01203 HENDES SOMERSET GREAT PLAINS RESOURCES, INC. 10956 HENDES-KRAUSE SOMERSET U. D. MAN, INC. 11415 HENDRIX UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18799 HENICKE, O.A. SALT FLAT NEXUS OIL AND GAS 06492 HENKE UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15596 HENKE UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15598 HENKE-WILHELM UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15857 HENKE-WILHELM UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15964 HENKHAUS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15680 HENLEY SOMERSET SEAGULL OPERATING CO., INC. 11220 HENNIG EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 17636 HENNING UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15789 HENRICHSON HC1 E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18993 HENRICHSON HC1 F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18995 HENRICHSON HC2 E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18976 HENRICHSON HC2 F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18987 HENRICHSON HC3 F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19368 HENRICHSON HC4 F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19342 HENRICHSON UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15535 HENRICHSON UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15583 HENRICHSON UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15961 HENRICHSON UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16133 HENRICHSON UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16508 HENRICHSON UNIT G DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16633 HENRICHSON UNIT H DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16510 HENRY A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 15184 HENRY A.W.P. (OLMOS) ROYKO OIL COMPANY 15109 HENRY CROWN, E. (NAVARRO) SEAGULL OPERATING CO., INC. 08664 HENRY FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 06421 HENRY MINERVA-ROCKDALE CAN'T COMPLAIN OPERATING CO. 01247 HENRY EF EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 15929 HENRY HOLDSWORTH UNIT ZAV PEARSALL (BUDA, S.) EXCO OPERATING COMPANY, LP 18561 HENRY SOUTH, EDNA GIBBONS A.W.P. (OLMOS) TREK RESOURCES, INC. 08926 HENRY SOUTH, EDNA GIBBONS A.W.P. (WILCOX) TREK RESOURCES, INC. 14651 HENRY SOUTH, EDNA GIBBONS A.W.P. (WILCOX 6200) TREK RESOURCES, INC. 17374 HENRY 65 BIG WELLS, NE. (OLMOS) TRINITY OPERATING (USG), LLC 17855 HENRY, A.L. A.W.P. (OLMOS) XTO ENERGY INC. 09421


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HENRY, D. M. CHARLOTTE (NAVARRO) ROLAND OIL COMPANY 05608 HENRY, D.M. -C- II CROWN, E. (NAVARRO) NINEVEH CORP. 09964 HENRY, E.M. "C" HENRY, NE. (CARRIZO, 3650) SUE-ANN OPERATING, L.C. 12935 HENRY, G. W. PATTY HUTT (WILCOX) BAR V ENERGY LLC 07064 HENRY, G. W. -B- PATTY HUTT (WILCOX) SOUTH TEXAS OILFIELD SOL, LLC 14948 HENRY, GEO PATTY HUTT (WILCOX) 2 D OIL & GAS LLC 14934 HENRY, J. B. HENRY (CARRIZO B-3) SUE-ANN OPERATING, L.C. 02584 HENRY, J. B. -B- CHARLOTTE (NAVARRO) WEN-BE 03289 HENRY, J.B. HENRY (WALES "A" SAND) SUE-ANN OPERATING, L.C. 12277 HENRY, WM. O. CHUPICK (OLMOS -A-) INLAND OCEAN, INC. 14005 HENRY,EDNA GIBBENS A.W.P. (OLMOS) TREK RESOURCES, INC. 10191 HENRY,WILLIAM MINERVA-ROCKDALE OPEN CHOKE EXPLORATION, LLC 09525 HENSON UNIT EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 17048 HERBER, EMMERT CHICON LAKE DENPAC CORPORATION 02526 HERBER, EMMERT -A- CHICON LAKE DENPAC CORPORATION 01854 HERBST BRISCOE RANCH (EAGLEFORD) AGERON ENERGY, LLC 19433 HERBST UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16206 HERBST UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16118 HERBST-MAY UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16065 HERMANN HATCH UNIT DIM BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 16292 HERMES SALT FLAT BARROW, WILLIAM R. INTERESTS 08812 HERMES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17497 HERNANDEZ -A- SOMERSET PAISANO PRODUCTION, INC. 10843 HERNANDEZ-CIOLETTI PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 16428 HERNANDEZ, ELENA SOMERSET STERLING INV. GROUP & ASSC., INC 12188 HERNANDEZ, I.G. SOMERSET GREAT PLAINS RESOURCES, INC. 10863 HERNDON-HENSLEY DIXIE (NAVARRO B) ERNEST OPERATING COMPANY 11882 HERNDON-HENSLEY MIDWAY (2300 OIL) ERNEST OPERATING COMPANY 12237 HERRERA, GREGORIO SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14690 HERRERA, GREGORIO ET AL SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14708 HERRERA, MARTIN GALBA (NAVARRO) STARBURST ENERGY, INC. 06325 HERRING-HOLLOWAY TAYLOR-INA PRODUCTION RESOURCES, INC. 01710 HERRMANN RONNIE (QUEEN CITY SAND) H & H PETROLEUM, LLC 14995 HERWIG PEARSALL (AUSTIN CHALK) KIDD PRODUCTION CO. 07012 HERZER, J.F. -A- WILDCAT DRILLPRO PRODUCTION 12221 HICKEY ADAMS (BUDA) ACTIVA RESOURCES, LLC 15174 HICKEY TAYLOR-INA ACTIVA RESOURCES, LLC 15417 HICKEY, A. STACY (OLMOS -A-) NEUMANN OIL & GAS, LLC 01695 HICKEY, EUGENE LA VERNIA HICKEY, EUGENE 00826 HICKEY, WILLIAM STACY (OLMOS -A-) NEUMANN OIL & GAS, LLC 13897 HICKMAN, W. W. -A- SALT FLAT JAVELINA OIL & GAS CO. 03968 HICKMAN, W. W. -B- SALT FLAT JAVELINA OIL & GAS CO. 01524 HICKS, K.D. ET AL SOMERSET GREAT PLAINS RESOURCES, INC. 10787 HICKS, KENNETH D. ET AL SOMERSET BLACK JACK SERVICES, L.L.C. 10817 HIDEAWAY RANCH BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18596 HIDEAWAY RANCH A2 UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18870 HIDEAWAY RANCH A3 UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18903 HIDEAWAY RANCH E1 UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18827 HIDEAWAY RANCH E2 UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18898 HIDEAWAY RANCH E3 UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18911 HIDEAWAY RANCH NORTH BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 19698


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HIDEAWAY RANCH UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18806 HIERHOLZER RETZLOFF UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15621 HIERHOLZER SEEWALD UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15599 HIERHOLZER UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15669 HIERHOLZER 7 BRS BOWMAN (REKLAW) AARONMARK SERVICES, LLC 14277 HIERHOLZER 7 GMK BOWMAN (REKLAW) AARONMARK SERVICES, LLC 14278 HIERHOLZER-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15923 HIERHOLZER, ALTON BOWMAN (REKLAW) EUROPEAN-SOUTHWEST CO. 06501 HIERHOLZER, ALTON HIGGINS LEE DRLG & DEVELP 07811 HIERHOLZER, ALTON HIGGINS (ESCONDIDO) WSM 08703 HIERHOLZER, C. H. BOWMAN (CARRIZO) AARONMARK SERVICES, LLC 02115 HIERHOLZER, C.H. HIGGINS (ESCONDIDO) WSM 08704 HIERHOLZER, CLIFFORD BOWMAN (REKLAW) SOUTHWEST PRODUCTION MGMT. CO. 01969 HIERHOLZER, CLIFFORD HIGGINS WSM 08393 HIERHOLZER, J.C. HIGGINS RED HORSE PETROLEUM 07406 HIERHOLZER, OTTO -A- HIGGINS WSM 08871 HIGGINS, G. P. & L. KAYE (NAVARRO) EMBREY OIL PRODUCTION CO. 03914 HIGGINS, MRS. C. C. CHARLOTTE (NAVARRO) WSM 03292 HIGGINS, PAT KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 02338 HIGGINS, PAT KAYE (NAVARRO) SOURCE PETROLEUM INC. 02339 HIGGINS, PATILLO JR. KAYE (NAVARRO) J.A.G. OIL & GAS 06224 HIGGINS, PATILLO JR. KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 02039 HIGHLAND MINERALS INC. PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 08115 HIGHROLLER KARNES SWD B FIRST SHOT (AUSTIN CHALK) NGL WATERSOLUTIONS EAGLEFORD,LLC 17023 HILBIG OIL UNIT NO. 1 LENTZ LOWER COLORADO RIVER AUTHORITY 13771 HILBRICH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16414 HILD LA VERNIA (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13758 HILDEBRAND PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 13559 HILDEBRAND PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12719 HILDEBRAND PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 12480 HILDEBRAND SWD PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 12686 HILDEBRAND, IRA PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 07486 HILDERBRAND, R. E. FAIRFIELD STARR OPERATING COMPANY 02186 HILEMAN PEARSALL (AUSTIN CHALK) CENTEX DEVELOPMENT 12444 HILL EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17329 HILL EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15551 HILL KYOTE CREATIVE OIL AND GAS OP II, LLC 11687 HILL PILGRIM (AUSTIN CHALK) PACE OIL AND GAS COMPANY 13431 HILL "A" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15610 HILL "B" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15605 HILL SA EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 17927 HILL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15401 HILL-REED SALT FLAT EAGLE FORD OIL CO., INC. 05729 HILL-REED UNIT #3 SALT FLAT, WEST PETROSAURUS, INC. 15539 HILL, BESSIE EZZELL MESSY OIL AND GAS, LLC 00573 HILL, J.W. FENTRESS (1750) AUSTIN OPERATING, LLC. 09884 HILSCHER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18172 HINDES DAVIS (EDWARDS 7481) JENEX PETROLEUM CORPORATION 09572 HINDES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15662 HINDES UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18499 HINDES UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18491


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HINDES-LIVE OAK UNIT INDIO TANKS (PEARSALL) VENADO OPERATING COMPANY LLC 17385 HINDES, BOB -B- BOB HINDES (2100 SEG. B) BRYMER, JACK CONTR. SERV. 03170 HINDMAN NO. 2 PILGRIM (AUSTIN CHALK) WTXR OPERATING (TEXAS), INC. 14648 HINDS, ADDIE SALT FLAT EAGLE FORD OIL CO., INC. 01526 HINDS, ADDIE SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 16192 HINDS, ADDIE -E- SALT FLAT EAGLE FORD OIL CO., INC. 04492 HINDS, ADDIE ESTATE SALT FLAT GINCO OPERATING CO. 01503 HINDS, ADDIE, ETAL -A- SALT FLAT CASTILLO OIL COMPANY LLC 03705 HINDS, ADDIE, ETAL -B- SALT FLAT IPACT 03706 HINDS, ADDIE, ETAL -C- SALT FLAT CASTILLO OIL COMPANY LLC 03740 HINDS, B.T. SALT FLAT RAFTER-J OIL COMPANY, INC. 07708 HINDS, F. C. SALT FLAT NORTH AMERICAN DRILLING CORP 03421 HINDS, F.C -A- TENNEY CREEK COMANCHE WELL SERVICE CORP. 04646 HINDS, F.C. SALT FLAT IVYYELLOWROSE ENERGY, LLC 09039 HINDS, F.C. -H- TENNEY CREEK CENTEX OIL & GAS 07485 HINDS, FLOYD C. SALT FLAT NORTH AMERICAN DRILLING CORP 06961 HINDS, FLOYD C. SALT FLAT NORTH AMERICAN DRILLING CORP 08837 HINER UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16573 HINER UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16577 HINER UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16523 HINES UNIT PILGRIM (AUSTIN CHALK) GALILEE OIL INVESTMENTS LLC 07013 HINKEL EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 15839 HINOJOSA EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16010 HINOJOSA A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16887 HINTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16984 HINTON, R.S. -A- SOMERSET GREAT PLAINS RESOURCES, INC. 08206 HINTON, R.S. -B- SOMERSET GREAT PLAINS RESOURCES, INC. 08207 HIPPENSTEAL UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16441 HIPPO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17701 HIRAM FALOR LA VERNIA PERKINS, EUGENE O. 14635 HIRSCH SWD JOURDANTON PRODUCED WATER TRANSFER1 LLC 16079 HIRSCH UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18591 HITCHCOCK -A- SAINT THIRTEEN (OLMOS NO. 1) L & J EXPLORATION, LLC 14642 HITZFELDER CORN (OLMOS D-2) PROPERTY DEVELOPMENT GROUP, INC. 02605 HITZFELDER PRUE RANCH (ANACACHO) PROPERTY DEVELOPMENT GROUP, INC. 14137 HITZFELDER PRUE RANCH (OLMOS A) PROPERTY DEVELOPMENT GROUP, INC. 14211 HITZFELDER PRUE RANCH (OLMOS B) PROPERTY DEVELOPMENT GROUP, INC. 14250 HITZFELDER PRUE RANCH (SERPENTINE) PROPERTY DEVELOPMENT GROUP, INC. 14212 HITZFELDER PRUE RANCH (2500 OLMOS) PROPERTY DEVELOPMENT GROUP, INC. 14274 HIXON EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15312 HIXON KINSEL B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18732 HIXON KINSEL C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18767 HIXON PROPERTIES, INC. MONKSFIELD (350 SAND) MDF OIL COMPANY 09000 HIXON TROUT D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18437 HIXON-CARDEN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16772 HIXON-CARDEN A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17770 HIXON-KINSEL A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18743 HIXON-LARSON 'A' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16149 HIXON-LARSON 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16151 HIXON-LARSON 'C' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16159 HIXON-STATE OF TEXAS UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17752


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HIXON-TROUT A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17346 HIXON-TROUT B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16775 HIXON-TROUT C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17284 HJ HEMME ET AL. FENTRESS (1750) CASTILLO OIL COMPANY LLC 18427 HKH ALLOCATION #1 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18759 HKH ALLOCATION #2 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18760 HKH ALLOCATION #3 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18703 HKH ALLOCATION #4 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18810 HKHR ALLOCATION #5 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18769 HKHR ALLOCATION #6 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18789 HKHR ALLOCATION #7 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18795 HKHR ALLOCATION #8 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18811 HOBART UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18396 HOBBS, WILLIS E. CHEROKEE (NAVARRO) CXL ENERGY LLC 08904 HODDE, A.W. HODDE (WALES SAND) EAGLE OIL & GAS CO. 14644 HODEL 81 WILDCAT APACHE CORPORATION 15200 HODGE DUNLAP BLACKMAR, JIM OIL OPERATOR 09573 HOELSCHER, I.L. EL INDIO, N.(OLMOS) WOLF, DARYL OIL 11398 HOERMANN, SYDNEY LA VERNIA HOERMANN, S. E. 06039 HOFF G UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17832 HOFF H UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17831 HOFF RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15255 HOFF RANCH UNIT "A" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15270 HOFF RANCH UNIT "B" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15433 HOFF RANCH UNIT "C" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15434 HOFF RANCH UNIT "D" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15435 HOFF RANCH UNIT "F" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15436 HOFFMAN WILDCAT MID-WESTERN OIL & GAS, INC. 12074 HOFFMAN FIRST SHOT (AUSTIN CHALK) LRH MANAGEMENT, LLC 14316 HOFFMAN, ADOLPH SOMERSET PETROSAURUS, INC. 10868 HOFFMAN, FRANK H. SOMERSET PETROSAURUS, INC. 03140 HOFFMAN, HERMAN SOMERSET PETROSAURUS, INC. 03197 HOFFMAN, LILLIE DARST CREEK (BUDA) CT ADAMS JR., LLC 03180 HOGAN -A- MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 06083 HOGAN -C- MINERVA-ROCKDALE PENROD OIL COMPANY OF TEXAS, INC 07689 HOGAN "B" MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 06228 HOGAN A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19956 HOGAN B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19983 HOGAN C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19957 HOGAN UNIT MILBUR, N. (WILCOX 2660) SHELDON RESOURCES, L.P. 14817 HOGAN-SMITH-GARNER MINERVA-ROCKDALE YANAHOSA, INC. 13795 HOGAN, W. P. MILBUR, N. (WILCOX 2660) SHELDON RESOURCES, L.P. 03853 HOGAN, W.P. MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 10524 HOHMANN, PHILIP SOMERSET SEAGULL OPERATING CO., INC. 03677 HOKE SPILLER OILTEX, LLC 03606 HOLCOMB-BRANNING LARREMORE CENTEX PIPE & EQUIPMENT, INC. 00810 HOLCOMBE-WALSTON KAYE (NAVARRO) PRODUCTION RESOURCES, INC. 01842 HOLDSWORTH INDIO, WEST (SAN MIGUEL) INLAND OCEAN, INC. 18833 HOLDSWORTH HOMESTEAD ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16353 HOLDSWORTH NELSON TRUST ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16889 HOLDSWORTH TRUST WILDCAT EXCO OPERATING COMPANY, LP 18624


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HOLDSWORTH UNIT A BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 19084 HOLDSWORTH UNIT B BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 19083 HOLDSWORTH, DAVID INDIO (SAN MIGUEL) ALAMO OPERATING COMPANY, L. C. 14836 HOLDSWORTH, DAVID INDIO, WEST (OLMOS) ALAMO OPERATING COMPANY, L. C. 17439 HOLIDAY GASPER (ATKINSON SAND) RBR OPERATING, INC. 13958 HOLLAN BUCK WHEAT (WALES) OUTLINE OIL COMPANY LLC 14964 HOLLER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18134 HOLLEY, A.H. MINERVA-ROCKDALE T. D. S. 06487 HOLLOWAY, H. RIDDLE JOE R. CHEATHAM OIL COMPANY 09467 HOLLUB UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15722 HOLMES EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 15517 HOLMES UNIT FRODEIN (GEORGETOWN) P.S.N. PETROLEUM, INC. 11685 HOLMES UNIT STOCKDALE, NE (EDWARDS) ALCOR ENERGY, INC. 11837 HOLSTEIN, R.J. UNIT PANDORA, NW (AUSTIN CHALK) CRYSTAL RESOURCES, INC 11964 HOLUB FIRST SHOT (AUSTIN CHALK) CEI OPERATING LLC 13253 HOLUB, ERNEST SOMERSET GREAT PLAINS RESOURCES, INC. 06896 HOLUBAR DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15823 HONEY BADGER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15937 HOOD CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 11907 HOOD, CHARLES W. CACHE (OLMOS SHALLOW) HOOD, CHARLES W. 06968 HOOD, LLOYD E. SOMERSET PETROSAURUS, INC. 11290 HOOKER, H. SOMERSET PETROSAURUS, INC. 10322 HOOTER, HERBERT L. SOMERSET E.A.T.E. OPERATING 11082 HOOTER, HERBERT L. -B- SOMERSET E.A.T.E. OPERATING 11083 HOOVER TENNEY CREEK IRON ORCHARD OPERATING LLC 07445 HOOVER, CHARLES W. MARCELINA CREEK (AUSTIN CHALK) TEN-KEY INC. 13687 HOPPER UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16597 HOPPER, MARGARET GASPER (ATKINSON SAND) RIO-TEX, INC. 15168 HOPPER, MARGARET ET AL GASPER (ATKINSON SAND) RBR OPERATING, INC. 13975 HORNER RANCH WILDCAT INTERCITY MANAGEMENT CORP. 05186 HORNSBY UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17992 HORSE LOT MINERVA-ROCKDALE RWA, LLC 03173 HORTENCIA OLIVARRI PLEASANTON, E. (BUDA) MELLO-DY RESOURCES, LLC 17728 HORTON A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 10705 HORTON - JCB A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 13300 HORTON -A-(AMAX) A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 10408 HORTON -M- A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 09764 HORTON BALLARD A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 10663 HORTON M EF EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19508 HORTON R P (TROY BALLARD) A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 09318 HORTON RANCH A.W.P. (OLMOS) AWP OPERATING COMPANY 12162 HORTON RANCH A.W.P. (OLMOS) AWP OPERATING COMPANY 14112 HORTON, J. L. MINERVA-ROCKDALE JACK OPERATING 03736 HORTON, R P NO. 18 A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 13933 HORTON, R P NO. 22 A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14070 HORTON, R.P. A.W.P. (OLMOS) WHITE OAK OPERATING COMPANY LLC 09423 HORTON, R.P. A.W.P. (OLMOS) XTO ENERGY INC. 08057 HORTON, R.P. -A- A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 12394 HORTON, R.P. -C- A.W.P. (OLMOS) XTO ENERGY INC. 10239 HORTON, R.P. ET AL A.W.P. (OLMOS) XTO ENERGY INC. 09249 HOSEK MARCELINA CREEK (BUDA) TEXAS LAND OPERATING, LLC 10320


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HOSEK UNIT CINDY ANN (AUSTIN CHALK, OIL) ALCOR ENERGY, INC. 13207 HOSEK UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15706 HOSKINS SOPHIA (WILCOX CONSOL.) TEXOZ E&P I, INC. 18311 HOSKINS EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16335 HOSKINS UNIT A.W.P. (OLMOS) TEXOZ E&P I, INC. 15189 HOSKINS-CURRY UNIT GIDDINGS (AUSTIN CHALK-1) UNION DOMINION OIL CORPORATION 06937 HOSKINS-TX EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 19044 HOSTETTER SWD HOSTETTER, N. (PETTUS) BLACKBEARD OPERATING, LLC 11566 HOUSE, H. D. EZZELL SAN CAJO OIL COMPANY 02648 HOUSING AUTHORITY UNITY SALT FLAT SHEFTS & SHEFTS, INC. 09620 HOVENCAMP UNIT BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19436 HOWARD ALLEN 01 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17212 HOWARD, EDNA PEARL PRUITT, SE. (OLMOS) TEXAS EMPIRE PETROLEUM CORP. 01419 HOWE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19659 HOWELL LA VERNIA THREE J ENERGY, INC. 17590 HOWELL LEASE #1 LA VERNIA (AUSTIN CHALK) HOWELL CRANE & RIGGING, INC. 06034 HOWELL LEASE #2 LA VERNIA HOWELL CRANE & RIGGING, INC. 07100 HOWELL LEASE #3 (S) LA VERNIA HOWELL CRANE & RIGGING, INC. 02102 HOWETT BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 15772 HOWETT DOS ARROYOS (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 05226 HOWETT UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17101 HOWETT UNIT ZAV F BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16715 HOWETT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 18015 HOWETT-PETTY UNIT 1 DOS ARROYOS (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 10256 HOWETT, M. DOS ARROYOS (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 15881 HOWITZER EAGLEVILLE (EAGLE FORD-1) VERDUN OIL & GAS LLC 19480 HOYLE-KOTHMANN DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16512 HOYLE, L. DUNLAP BAIR'S LEASE SERVICE, INC. 03812 HOYLE, MONA PEARSALL (AUSTIN CHALK) SEASON OIL & GAS 12723 HR COTULLA SWD EAGLEVILLE (EAGLE FORD-1) NGL WATERSOLUTIONS EAGLEFORD,LLC 19868 HRH THOMPSOM PEARSALL (AUSTIN CHALK) TEXAS OIL AND GAS OPERATING, LLC 05039 HRNCIR EAGLEVILLE (EAGLE FORD-1) BXP OPERATING, LLC 17074 HRNCIR, A.K. BOULDIN (2200) VOMELA RESOURCES INC. 12083 HUBBARD A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16367 HUBBARD B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16399 HUBBARD C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16506 HUBBARD OMEGA "1985" SOMERSET GREAT PLAINS RESOURCES, INC. 11476 HUBBARD. VAS II SOMERSET GREAT PLAINS RESOURCES, INC. 11477 HUBBARD-HARBO SOMERSET GREAT PLAINS RESOURCES, INC. 11421 HUBBARD, WILLA-HARBO "1985" SOMERSET GREAT PLAINS RESOURCES, INC. 11422 HUBBERD WILDCAT STARR OPERATING COMPANY 12807 HUBBERD EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16026 HUBBERD 'A' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16016 HUBER PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16197 HUBER ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16595 HUBER-PERRY MILBUR (NAVARRO) CXL ENERGY LLC 11339 HUCK EST. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 12477 HUCK-BACH UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 13261 HUCK-HARRINGTON PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 13161 HUDGENS, ERNEST SALT FLAT EAGLE FORD OIL CO., INC. 08016 HUDSON BULLOH (POTH) CADDO ENERGY CO., INC. 05407


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HUEBINGER, R. J. LA VERNIA (190 SAND) PRODUCTION RESOURCES, INC. 04562 HUEBINGER, R. J. LINNE (POTH -A- SAND) PRODUCTION RESOURCES, INC. 02403 HUEBINGER, R.H. LA VERNIA HUEBINGER, R. H. 00881 HUETTEL-BROWN PECAN GAP (5050) COPESTONE OPERATING, LLC 11860 HUFF ET AL LULING-BRANYON GINCO OPERATING CO. 08314 HUFF-TRAMMELL UNIT WILDCAT CXL ENERGY LLC 17949 HUFF, CHARLES LULING-BRANYON SHEFTS & SHEFTS, INC. 05864 HUFF, CURTIS L. DUNLAP EAGLE FORD OIL CO., INC. 06976 HUFFMAN UNIT #1RE PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 13065 HUGGINS-MANFORD EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17962 HUGH A FITZSIMONS, ET AL HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 11382 HUGHES PEG (AUSTIN CHALK) JONES, R. M. 02310 HUGHES UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19461 HUGHES-ASHBROOK 'A' ESTHER (GEORGETOWN) HUGHES, DAN A. COMPANY, L.P. 16229 HUGHES-CANTU PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 12411 HUGHES, NORTH PEARSALL (AUSTIN CHALK) NAILS OPERATING COMPANY LLC 12506 HUGHES, R. T. -A- SOMERSET GREAT PLAINS RESOURCES, INC. 01626 HUGO ASTRO PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 06305 HUGO HEIRS PEARSALL (AUSTIN CHALK) CENIZA PETROLEUM, INC. 12459 HUGO II PEARSALL (AUSTIN CHALK) CORE E & P CORP. 12415 HUGO-BAKER PEARSALL (AUSTIN CHALK) MAVERICK ENERGY GROUP, INC. 12896 HUMAN UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16654 HUMMEL COST (BUDA) GALILEE OIL INVESTMENTS LLC 15070 HUMMEL, ELLA PILGRIM (AUSTIN CHALK) SANTANA ENERGY SERVICES, LLC 13439 HUMMEL, GLENN, POTH -A- UNIT GLEN HUMMEL (POTH) FORT WORTH NATURAL GAS, INC. 03858 HUNDLEY EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15248 HUNTER EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 15759 HUNTER B EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 17020 HUNTER, B.V. PEARSALL (AUSTIN CHALK) CONCHO OILFIELD SERV & OPER CO. 04952 HUNTER, HELEN CRAIN LEMING (2934 SAND) STRATA STAR PETROLEUM CORP. 09165 HURLEY, EUGENE LA VERNIA HOWELL CRANE & RIGGING, INC. 00843 HURLEY, EUGENE LA VERNIA HOWELL CRANE & RIGGING, INC. 00883 HURLEY, EUGENE LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00862 HURLEY, EUGENE -A- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00863 HURLEY, EUGENE -B- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00864 HURLEY, GLENN SALT FLAT OFFSPRING WELL SALVAGE 02941 HURRICANE UNIT EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 19269 HURRICANE-BOWMAN ALLOCATION EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 19274 HURRIKAIN PEARSALL (BUDA LIME) KAIN PETROLEUM, LLC 16463 HURT DEWVILLE (POTH) EXPRESS OIL CO. 09674 HURT PEACH CREEK (AUSTIN CHALK) PIE OPERATING, LLC 17315 HURT & TARTT WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01769 HURT, ARTHUR "B" PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 06035 HURT, G. R. ET AL CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 04179 HURT, ROBBY MOUNTAIN HOME (ELLENBURGER 3730) BROKEN H OIL 07841 HURT, W. T. WEIGANG WILCO ENERGY, J.V. 13309 HUTZLER -A- TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 03665 HUTZLER "C" TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 05883 HW WISEMAN LA VERNIA PRODUCTION RESOURCES, INC. 18817 HWY 16 SWD A EAGLEVILLE (EAGLE FORD-1) C&E PRODUCTION, LLC 18557 HYATT PLUM CREEK (SERPENTINE) HYATT, RICKY E. 12342


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HYDE WILDCAT MUSKEGON DEVELOPMENT COMPANY 15971 HYDE HACKBERRY CREEK (4300) MUSKEGON DEVELOPMENT COMPANY 04754 HYENA EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16769 HYMAN FAIRFIELD FIVE STAR ENERGY OPERATIONS 02172 HYMANS FARM -B- FAIRFIELD FIVE STAR ENERGY OPERATIONS 02092 ILEY, GEORGE R. ET AL MAG (AUSTIN CHALK) CRYSTAL RESOURCES, INC 13747 ILFREY & WILKERSON -B- SOMERSET PETROSAURUS, INC. 09212 ILTIS, MATHILDA FAIRFIELD SIMCO OIL, LLC 11378 IMHOFF KINGSBURY (BUDA LIME) PRODUCTION RESOURCES, INC. 17299 IMPALA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17820 INCE EAGLEVILLE (EAGLE FORD-1) CL&F OPERATING LLC 16351 INDIGO A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 20013 INDIGO B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 20014 INGRAM/BOWMAN DENT INGRAM (OLMOS 1) L & J EXPLORATION, LLC 11832 IRA HILDEBRAND UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14969 IRISH-SEELIGSON UNIT PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 18273 IRONWOOD BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18636 IRONWOOD A2 UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18865 IRONWOOD A3 UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18855 IRONWOOD A4 UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18899 IRONWOOD UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 18843 IRVIN EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15841 IRVIN A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16202 IRVIN B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16205 IRVIN C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16204 IRVIN D UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17697 IRVIN E UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17698 IRVIN EAST EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15575 IRVIN F UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17696 IRVIN FAMILY WILDCAT CHEYENNE PETROLEUM COMPANY 15813 IRVIN FAMILY UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15729 IRVIN FAMILY UNIT B EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15999 IRVIN FAMILY UNIT C EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 18055 IRVIN FAMILY UNIT D EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 16381 IRVIN G UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17699 IRVIN H UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17753 IRVIN H-I ALLOCATION A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19045 IRVIN H-I ALLOCATION B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19047 IRVIN H-I ALLOCATION C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19046 IRVIN I UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17751 IRVIN J UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17484 IRVIN MINERALS SOUTH EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 17116 IRVIN WEST EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17695 IRWIN TAYLOR-INA LONGSHOT ENERGY LLC 06441 ISABELLA UNIT PEACH CREEK (AUSTIN CHALK) PRODUCTION RESOURCES, INC. 10727 IVEY RANCH DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18018 J AVANT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16880 J AVANT UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16231 J C DAVIS UNIT BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19442 J D FENNER UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17025 J D FENNER UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16733


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ J D FENNER UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16735 J RAYES EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15534 J TYLER UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16594 J TYLER UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16786 J W UNIT PANDORA, NW (AUSTIN CHALK) ALCOR ENERGY, INC. 13566 J W UNIT #2 PANDORA, NW (AUSTIN CHALK) LAMBECK PETROLEUM, LLC 13888 J. A. SCHORP EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 18060 J. B. NORTHCUTT SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15471 J. B. NORTHCUTT A SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 18765 J. BEELER PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19529 J. KOEHLER, NORTH SOMERSET PETROSAURUS, INC. 10655 J. L. NEW SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 18680 J. N. WILSON K TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 17377 J. PEELER A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18978 J. R. CARTER DUNLAP ENHANCED RS, INC. 19069 J. RAYES A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15557 J. RAYES B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15548 J. S. CORPORA CHEROKEE (NAVARRO) CXL ENERGY LLC 19125 J. T. FIELDS B LULING-BRANYON ENHANCED RS, INC. 18793 J.B. BAGGETT-JONES PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 14662 J.C. HENRY EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 16921 J.C. WILLIAMS HEIRS INDIO TANKS (PEARSALL) VENADO OPERATING COMPANY LLC 17156 J.J. PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19763 J.J. PEELER A.W.P. (OLMOS) TEXEGY OPERATING COMPANY LLC 17830 J.M. PRESTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16991 J&M HOLDSWORTH UNIT ZAV F BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17543 J&M HOLDSWORTH UNIT ZAV G BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17495 J&M HOLDSWORTH ZAV BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 18279 JABEZ MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 01226 JACK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17660 JACKEL -A- SOMERSET GREAT PLAINS RESOURCES, INC. 11084 JACKEL -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11085 JACKEL -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11086 JACKEL -D- SOMERSET GREAT PLAINS RESOURCES, INC. 11088 JACKEL -E- SOMERSET GREAT PLAINS RESOURCES, INC. 11089 JACKEL, C.J. FAIRFIELD DIAMOND TRADING & PIPELINE CORP 09150 JACKPOT UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13977 JACKSON OIL CO CHICON LAKE JACKSON COMPANY 03771 JACKSON, A. B. -A- SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01513 JACKSON, BILL PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12645 JACKSON, ET AL - BLUE QUAIL UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 17188 JACKSON, ET AL-BOBWHITE UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18421 JACKSON, LILLIAN SALT FLAT OCCIDENTAL ENERGY COMPANY, INC. 02980 JACKSON, SAM ET AL LA VERNIA RAMPAGE EXPLORATION, INC. 07219 JACOB DE LA O 14-A CHICON LAKE RLU OIL & GAS, INC. 09861 JACOBY FAIRFIELD CALK, ROGER D. 09216 JAHNS, EDDIE DARST CREEK (BUDA) CALTEX ENERGY CO. 06271 JAHNS, EDDIE -A- DARST CREEK (BUDA) CALTEX ENERGY CO. 02953 JAHNS, EDDIE A DARST CREEK (BUDA) CALTEX ENERGY CO. 06198 JAM EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 16837 JAMBERS BBJ, N. (WILCOX 5700) OMEGA ENERGY, LLC 10674


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JAMBERS EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 15725 JAMBERS, GEORGE T. CLOETER (WILCOX 5800) REPUBLIC RESOURCES, LLC. 13838 JAMES PEARSALL (AUSTIN CHALK) AMPAK OIL COMPANY 14809 JAMES PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 13641 JAMES WIATREK EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16297 JAMES, F.C. SOMERSET RAOL COMPANY, THE 11319 JAMES, J. W. SOMERSET JAMCO OIL 01599 JAMES, J.W. SOMERSET RAOL COMPANY, THE 11202 JAMES, L. M. SOMERSET U. D. MAN, INC. 01627 JAMES, MARY L. ETAL SOMERSET U. D. MAN, INC. 01628 JAMES, THOMAS C. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 10595 JAMES, WM. SOMERSET U. D. MAN, INC. 02697 JAMESTOWN A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19392 JAMESTOWN B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19377 JAMESTOWN C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19378 JANEK MARCELINA CREEK (AUSTIN CHALK) PONTIAC OIL, INC. 09983 JANET UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17002 JANICE J SOMERSET PETRO-TEX ENERGY & EXPL.CO.,INC. 11288 JANICE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18136 JANICKE, FRANK TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 07019 JANIE D SOMERSET EVERETT OIL, INC. 01652 JANOTA FIVE MILE (WILCOX, UPPER) CENTEX DEVELOPMENT 09666 JANSZEN SOUTHTON OILEX INT'L INVESTMENTS, INC. 01664 JANSZEN, ERWIN ECKERT GINCO OPERATING CO. 04501 JARRATT LOS ANGELES (3800) GENESIS WELL SERVICE 08642 JARRATT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16807 JARUTOWICZ, ANTON KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 01937 JARUTOWITZ KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 06304 JARZOMBEK EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15774 JARZOMBEK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16112 JARZOMBEK UNIT MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 18642 JARZOMBEK UNIT POTH, EAST (AUSTIN CHALK) FIRST ROCK, INC. 07098 JARZOMBEK, ALFRED UNIT -A- POTH, EAST (AUSTIN CHALK) FIRST ROCK, INC. 07427 JARZOMBEK, VINCENT CINDY ANN (AUSTIN CHALK, OIL) NORDSTRAND ENGINEERING, INC. 12867 JASIK EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16622 JASIK RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19432 JASIK UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 14597 JASIK, A.J. ET UX LEMING (2934 SAND) JB OIL & GAS WELL SERVICE 09377 JASIK, EMMA LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 11482 JASIK, EMMA -A- LEMING (2934 SAND) BRITANCO, L.L.C. 11562 JASIK, L.A. LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 08972 JASIK, S. LEMING (2934 SAND) JB OIL & GAS WELL SERVICE 08507 JASIK, STANLEY J. LEMING (NAVARRO SAND) JB OIL & GAS WELL SERVICE 09902 JASKINIA EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16884 JASKINIA POTH, NW. (BUDA) BAYSHORE OPERATING CORP., L.L.C. 05343 JASKINIA, FRED MARCELINA CREEK (BUDA) SCHROEDER OIL PROPERTIES 09182 JASON UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18205 JAVELINA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17058 JAY HARPOLE BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15850 JB EAST UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18047 JB WEST UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18058


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JBGS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15348 JBGS UNIT EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15334 JC MARTIN SUN T S H (OLMOS) GUARDIAN ENERGY OPERATING CO LLC 18501 JCA OIL CHICON LAKE JCA OIL CO. 17637 JE & LC RODRIGUEZ UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16732 JE & LC RODRIGUEZ UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16571 JE & LC RODRIGUEZ UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16474 JEA A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15391 JEA B EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15286 JEA HC1 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19196 JEA HC11 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19258 JEA HC12 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19259 JEA HC13 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19261 JEA HC14 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19262 JEA HC15 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19309 JEA HC17 LAS Q2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19245 JEA HC18 LAS Q2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19249 JEA HC19 LAS Q2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19257 JEA HC2 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19197 JEA HC20 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19239 JEA HC21 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19246 JEA HC22 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19250 JEA HC23 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19247 JEA HC24 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19183 JEA HC25 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19184 JEA HC27 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19240 JEA HC3 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19216 JEA HC30 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19267 JEA HC31 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19226 JEA HC32 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19227 JEA HC33 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19228 JEA HC34 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19217 JEA HC35 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19310 JEA HC36 LAS G2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19195 JEA HC4 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19185 JEA HC5 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19220 JEA HC6 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19200 JEA HC7 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19187 JEA HC8 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19201 JEA HC9 LAS G2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19188 JEA UNIT D EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15978 JEA UNIT E EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15941 JEA UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17086 JEA UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16607 JEA UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17094 JEA UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17120 JEA UNIT IX LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16831 JEA UNIT L LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16045 JEA UNIT V LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16120 JEA UNIT VI LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17093 JEA UNIT VII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17111


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JEA UNIT VIII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16913 JEA UNIT X LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17087 JEA UNIT XI LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16840 JEA UNIT XII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17109 JEA UNIT XIII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16839 JEA UNIT XIV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17108 JEA UNIT XV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16881 JEA UNIT XVI LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17107 JEA UNIT XVII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16914 JEA WEST UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16759 JEA WEST UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16761 JEANES EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 16390 JEFF MOORE -B- DALE-MCBRIDE HAZELETT OIL, INC. 14436 JEFFREY EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16064 JEFFREY -B- MINERVA-ROCKDALE COMPREHENSIVE RESEARCH BUR, INC. 09749 JELKS FENTRESS (1750) BENCHMARK TEXAS PETROLEUM, LLC. 16232 JENDRUSCH BARNES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15463 JENDRUSCH GEROLD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15344 JENDRZEY UNIT MARCELINA CREEK (AUSTIN CHALK) PROGENIES OPERATING LLC 15798 JENKINS PARMER (PALUXY) SNAP EXPLORATION COMPANY, LLC 18804 JENKINS SOMERSET RED CHALK RESOURCES LLC 10746 JENKINS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16947 JENKINS, C. SOMERSET GREAT PLAINS RESOURCES, INC. 11277 JENKINS, O.R. LULING-BRANYON OIL & PETROLEUM OF MID-TEX 09834 JENKINS, R.D. MINERVA-ROCKDALE JENKINS, R. D. 08989 JENNINGS UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15873 JEREMY B. PETERS FAMILY TRUST EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15911 JERRY JOHNSTON DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15620 JESSICA PEARSALL (BUDA, S.) CML EXPLORATION, LLC 17789 JETERO INVESTMENTS COMPANY JETERO (SAN MIGUEL) JENNINGS EXPLORATION COMPANY 07491 JETERO-BOOTH PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 14520 JETT, A. M. MINERVA-ROCKDALE VICEROY PETROLEUM, LP 03036 JETTON, LESTER CHICON LAKE GENIE OIL COMPANY 06940 JEZISEK MILANO, SOUTH (AUSTIN CHALK) WASTE MGMT MILAM PROPERTY, LLC 07706 JIM DAVIS UNIT PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 12642 JIMMY UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 17426 JIMMY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18237 JJ HENRY HC1 UNIT II EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19778 JJ HENRY HC1 UNIT IV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19272 JJ HENRY HC1 UNIT V EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19791 JJ HENRY HC1 UNIT VI EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19780 JJ HENRY HC1 UNIT X EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19722 JJ HENRY HC2 UNIT II EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19781 JJ HENRY HC2 UNIT IV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19207 JJ HENRY HC2 UNIT VI EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19786 JJ HENRY HC2 UNIT X EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19719 JJ HENRY HC3 UNIT IV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19208 JJ HENRY HC3 UNIT VI EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19841 JJ HENRY HC4 UNIT IV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19338 JJ HENRY HC4 UNIT VI EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19785 JJ HENRY IX EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16462


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JJ HENRY UNIT I EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17554 JJ HENRY UNIT II EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15345 JJ HENRY UNIT III EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15574 JJ HENRY UNIT IV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16598 JJ HENRY UNIT V EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16454 JJ HENRY UNIT VI EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16748 JJ HENRY UNIT VII EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16431 JJ HENRY UNIT VIII EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16744 JJ HENRY UNIT X EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17115 JL RESOURCES CHUPICK (OLMOS -A-) RICKAWAY ENERGY, CORP. 17057 JLH LIC A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15885 JLH LIC B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16091 JLH LIC B-C-E-F ALLOC F EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19721 JLH LIC C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16152 JLH LIC C-E ALLOC E EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19699 JLH LIC D UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16254 JLH LIC E UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16975 JLH LIC F UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17007 JLH LIC G UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16927 JMAK JACOB BULL OIL COMPANY, LLC 15075 JMH ZAV AMMANN (BUDA) SN OPERATING, LLC 18370 JN TYLER UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16614 JN TYLER UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16625 JOANNE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18944 JOASH MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 02891 JOB, ALFRED SOMERSET PETROSAURUS, INC. 07611 JOB, ALFRED -A- SOMERSET PETROSAURUS, INC. 08605 JOE PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15666 JOE H. BUNCH "AB" LULING-BRANYON E & W OIL, INC. 09083 JOE HINDES 'C' UNIT EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 16730 JOE HINDES 'D' UNIT EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 16743 JOE HINDES 'E' UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16950 JOE HINDES 'F' UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16957 JOE HINDES 'G' UNIT EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 17921 JOE HINDES "A" UNIT EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 15663 JOE HINDES "B" UNIT EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 15718 JOECKEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18014 JOEY SMITH EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15483 JOHN CASHEN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18540 JOHN HOLDSWORTH UNIT ZAV PEARSALL (BUDA, S.) SN OPERATING, LLC 18562 JOHN JR UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17017 JOHN OPPENHEIMER UNIT PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 17686 JOHN STRAIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15329 JOHN VON GONTEN MINERVA-ROCKDALE VON GONTEN, JOHN SCOTT 18543 JOHNS, HAM, FEE LULING-BRANYON ATKINSON, L. G., LLC 03791 JOHNS, OTTO WEAVER & OLSON (POTH) PUMP-N-PRODUCTION, LLC 03108 JOHNSON MARCELINA CREEK (AUSTIN CHALK) BAYSHORE OPERATING CORP., L.L.C. 18780 JOHNSON PEARSALL (AUSTIN CHALK) BUFFCO PRODUCTION INC. 12922 JOHNSON PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12619 JOHNSON PEARSALL (AUSTIN CHALK) STRATCO OPERATING CO., INC. 13209 JOHNSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17465


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JOHNSON UNIT MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 08823 JOHNSON UNIT ZION HILL (AUSTIN CHALK) COBRA OIL & GAS CORPORATION 18878 JOHNSON-KINSEL 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16635 JOHNSON-KINSEL 'D' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16148 JOHNSON-KINSEL A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16690 JOHNSON-KINSEL C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16150 JOHNSON-KINSEL E UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16138 JOHNSON-THREADGILL UNIT SALT FLAT, WEST E. T. OIL COMPANY 06635 JOHNSON, ANDREW PENA CREEK (SAN MIGUEL 3RD) HAMILTON, CLAY 04356 JOHNSON, C.D. KYOTE JOHNSON BROTHERS OIL 00800 JOHNSON, CLARA "A" SOMERSET SEEKER OIL COMPANY, INCORPORATED 13679 JOHNSON, CLARA "B" SOMERSET SEEKER OIL COMPANY, INCORPORATED 13355 JOHNSON, CLARA V. SOMERSET GREAT PLAINS RESOURCES, INC. 11295 JOHNSON, E.F. FENTRESS (1750) DELANEY OIL AND GAS COMPANY 13829 JOHNSON, GEORGE LUND WELPETCO, INC. 08742 JOHNSON, MARY B. SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15298 JOHNSON, MARY B. -A- SALT FLAT B-3 OIL CO. 01481 JOHNSON, MARY B. -B- SALT FLAT JAVELINA OIL & GAS CO. 01482 JOHNSON, MARY B. ET AL SALT FLAT GINCO OPERATING CO. 03435 JOHNSON, MAYNE GUNN ET AL DILWORTH SOUTH (BUDA) SEGURO WELL SERVICE, INC. 07139 JOHNSON, PAULINE DOS ARROYOS (SAN MIGUEL) RETAMA OIL CORPORATION 04909 JOHNSON, T. C. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 03199 JOHNSON, W. R. CHARLOTTE (NAVARRO) REC, LLC 03293 JOHNSON"1" PEARSALL (AUSTIN CHALK) TEXRON OPERATING, LLC 17679 JOHNSTON BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15786 JOHNSTON PEARSALL (AUSTIN CHALK) DIAMOND ENERGY SERVICES, LP 12644 JOHNSTON & PARR UNIT LITTLE NEW YORK SELLERS LEASE SERVICE, INC. 10127 JOHNSTON -A- PEARSALL (AUSTIN CHALK) DIAMOND ENERGY SERVICES, LP 12907 JOHNSTON -B- PEARSALL (AUSTIN CHALK) DIAMOND ENERGY SERVICES, LP 12938 JOHNSTON -P- PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 04773 JOHNSTON ENTERPRISES DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15771 JOHNSTON HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19702 JOHNSTON HC4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19703 JOHNSTON HC5 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19631 JOHNSTON RANCH PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17738 JOHNSTON-LANE M.E.I (WILCOX 4300) EXPRESS OIL CO. 13847 JOHNSTON-OSAGE UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 18103 JOHNSTON-OSAGE UNIT B PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 18312 JOHNSTON, JAMES PEARSALL (AUSTIN CHALK) JEM ENERGY 12743 JOHNSTON, JOE H. LITTLE NEW YORK SELLERS LEASE SERVICE, INC. 09193 JOLLEY, A. W. LARREMORE CENTEX PIPE & EQUIPMENT, INC. 00811 JONES PEARSALL (AUSTIN CHALK) NAVAJO EXPLORATION, INC. 13839 JONES-MCGLOTHLIN FAIRFIELD CALK, ROGER D. 06911 JONES, BEATRICE PRUITT, S. (ESCONDIDO) WSM 08821 JONES, BEATRICE PRUITT, S. (ESCONDIDO 4200) WSM 09023 JONES, BURRELL PRUITT, S. (ESCONDIDO) BLEDSOE, R.K. TRUST OIL OPERATOR 09607 JONES, C. L. SR. MARSHA L.O. OIL & GAS, LLC 05421 JONES, C. L., SR. MARSHA L.O. OIL & GAS, LLC 13725 JONES, CHAS. N. LA VERNIA (190 SAND) TABER, ALAN R. 02698 JONES, E. B. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 05267 JONES, E. B. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 12370


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JONES, G. PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 12653 JONES, H.J. PRUITT PEARL, BILL H. PRODUCTIONS, INC. 11647 JONES, J & J GAS RIDGE PLASCENCIA, LUIS E 00639 JONES, J. H. -B- PRUITT PEARL, BILL H. PRODUCTIONS, INC. 01401 JONES, LESTER H., ET AL SOMERSET RED CHALK RESOURCES LLC 03383 JONES, MARY LOU PEACH CREEK (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 07011 JONES, NEWT PEARSALL (AUSTIN CHALK) FRIO OIL & GAS, LTD. 05575 JONES, R.C. UNIT SALT FLAT, WEST OCCIDENTAL ENERGY COMPANY, INC. 07060 JONES, W.J. -A- TENNEY CREEK TEXARODA DRILLING CO., INC. 08373 JONOTA PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 09087 JONSSON PERLITZ C PILOSA, EAST (2ND SAN MIGUEL) TEXOKAN OPERATING, INC. 14317 JONSSON-PERLITZ PILOSA, EAST (2ND SAN MIGUEL) METIS ENERGY LLC 19186 JONSSON-PERLITZ "B" PILOSA, EAST (2ND SAN MIGUEL) BOTASCH OPERATING, LLC 10297 JONSSON-PERLITZ "C" PILOSA, EAST (2ND SAN MIGUEL) TEXOKAN OPERATING, INC. 14315 JONSSON-PERLITZ RANCH PILOSA, EAST (2ND SAN MIGUEL) TEXOKAN OPERATING, INC. 14085 JOPLIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18796 JORDAN LUCKEY DOSS (TAYLOR) NAVALO 18994 JORDAN-WOODWARD UNIT PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03499 JORDAN, M. JORDAN (NAVARRO B) VICEROY PETROLEUM, LP 10526 JOSEPH PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19401 JOSHUA TREE A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19175 JOSHUA TREE B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19176 JOSHUA TREE C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19179 JOSHUA TREE D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19426 JOSHUA TREE E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19382 JOSHUA TREE F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19384 JOSHUA TREE G EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19653 JOSHUA TREE H EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19650 JOSHUA TREE J EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19654 JOYCE KEY NIXON, EAST (6100) GALILEE OIL INVESTMENTS LLC 04864 JP RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15976 JP RANCH C EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16005 JP RANCH D EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16006 JP RANCH F EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16781 JR HAMILTON BRISCOE RANCH (EAGLEFORD) EL TORO RESOURCES LLC 18818 JRED BRISCOE RANCH (EAGLEFORD) ACTIVA RESOURCES, LLC 19704 JRED HUGH FITZSIMMONS (SAN MIGUEL) ACTIVA RESOURCES, LLC 19582 JRED PEARSALL (BUDA, S.) CML EXPLORATION, LLC 17846 JRED RANCH BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15247 JRED RANCH B BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15357 JTN UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17045 JUNE BUG UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19096 JUNG, CARMEN EVERGREEN FARMS, NE. (1ST OLMOS) SANDY SWD, LLC 14776 JUNGMAN, GEO. CHICON LAKE OJT, LLC 02022 JUPE 'A' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15912 JUSTIN LEMING (2934 SAND) W.W. ENERGY 10507 JUSTIN TOM 01 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 15749 JUTSON, ARVA L. MINERVA-ROCKDALE DORADO OFFSHORE, LLC 08044 JUTSON, ARVA LEE MINERVA-ROCKDALE DORADO OFFSHORE, LLC 08656 JUTSON, ARVA LEE A-1 MINERVA-ROCKDALE DORADO OFFSHORE, LLC 09579 JV SWD EAGLEVILLE (EAGLE FORD-1) C&E PRODUCTION, LLC 18805


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ K RANCH LOS COMPADRES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18113 K. KOHLLEPPEL CHICON LAKE RLU OPERATING, LLC 18764 K. KOTARA EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16276 K.M. RANCH EAGLEVILLE (EAGLE FORD-1) CONTANGO RESOURCES, INC. 15631 KAF UNIT KATHLEEN ANN (REEF) CIBOLO ENERGY OPERATING, INC. 13923 KAHN MARCELINA CREEK (BUDA) KING'S KID OIL CO., THE 08497 KAIN PEARSALL (AUSTIN CHALK) KAIN PETROLEUM, LLC 14739 KAIN "A" PEARSALL (AUSTIN CHALK) KAIN PETROLEUM, LLC 15003 KAISER BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13830 KAISER DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 04094 KAISER JUNIOR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17201 KAISER SENIOR A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17371 KAISER SENIOR B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17355 KAISER SENIOR C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17568 KAISER SENIOR D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17319 KALLIO, R.J. PEARSALL (AUSTIN CHALK) MISSION RIVER SYSTEMS, INC. 12680 KAMINSKI, HERMAN PRUSKE (BUDA) EXXCEL OPERATING COMPANY 12000 KANSU RED EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17974 KAPAVIK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17347 KARNEI, LENARD SUTIL (REEF) CRYSTAL RESOURCES, INC 06500 KASPAR PILGRIM (AUSTIN CHALK) VICEROY PETROLEUM, LP 14281 KASPER MARTINEZ SUN T S H (OLMOS) KASPER OIL & GAS II, L.L.C. 15384 KASPER UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18155 KASPER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17326 KASPER, DON PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 05707 KASSNER MID-FREDDY HUT (WRIGHT) EAGLE OIL & GAS CO. 14656 KASSNER ENERGY MANAGEMENT, LLC FREDDY HUTT (WILCOX) OUTLINE OIL COMPANY LLC 04406 KASSNER ENERGY MANAGEMENT, LLC FREDDY HUTT, SOUTH (WILCOX) OUTLINE OIL COMPANY LLC 06042 KASSNER ENERGY MANAGEMENT,LLC FREDDY HUTT, SOUTH (WILCOX) OUTLINE OIL COMPANY LLC 13983 KATHERINE BROWN UNIT BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19742 KAYSER, R. F. NIXON AMPAK OIL COMPANY 13941 KEBODEAUX, H.J. SOMERSET QUEST RESEARCH & DEV. CORP. 11276 KEELAND-HILDEBRAND LA VERNIA J&J OIL 00851 KEELAND, W. E. LA VERNIA ALCORN ENERGY, L.L.C. 10403 KEELING, GEORGE W. FAIRFIELD CALK, ROGER D. 06899 KEEN MINERVA-ROCKDALE VICEROY PETROLEUM, LP 19088 KEILMANN, LOUIS R. FAIRFIELD EVERETT OIL, INC. 06307 KELFER DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16302 KELLER CHICON LAKE RPG OPERATING LLC 17413 KELLER EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16954 KELLER EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15958 KELLER FAIRFIELD RPG OPERATING LLC 18317 KELLER HASSE (BUDA) VAMARIE, INC. 09111 KELLER PENA CREEK (SAN MIGUEL 3RD) TXCO RESOURCES INC. 14894 KELLER SOMERSET GREAT PLAINS RESOURCES, INC. 11635 KELLER B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15972 KELLER, EMMA FAIRFIELD CRYSTAL RESOURCES, INC 02149 KELLEY LULING-BRANYON EAGLE FORD OIL CO., INC. 01138 KELLEY WILSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15919 KELLEY-PEREZ LULING-BRANYON EAGLE FORD OIL CO., INC. 02327 KELLEY, CHARLIE LULING-BRANYON EAGLE FORD OIL CO., INC. 03645


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KELLEY, CHARLIE -A- LULING-BRANYON OCCIDENTAL ENERGY COMPANY, INC. 09563 KELLEY, J. J. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 01038 KELLNER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18637 KELLNER-JONAS UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15566 KELLNER-MCMAHON UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15562 KELLNER, ETTA L. FASHING (AUSTIN CHALK) PROTEGE ENERGY III LLC 14628 KELLY AUSTIN PIERCE (AUSTIN CHALK) SHIDLER, MARK L., INC. 15217 KELLY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17420 KELLY, J.J. -A- LULING-BRANYON GREAT PLAINS RESOURCES, INC. 06887 KELLY, J.J. -B- LULING-BRANYON GREAT PLAINS RESOURCES, INC. 06860 KEMPEN, A.A. SOMERSET GINCO OPERATING CO. 10927 KENNEDY, H.H. & M.W. MIDWAY (2300 OIL) CADDO ENERGY CO., INC. 12137 KENNEY "B" SOMERSET SEEKER OIL COMPANY, INCORPORATED 13204 KENNEY-SHELTON SOMERSET PRODUCTION RESOURCES, INC. 18820 KENNEY, ALBERT & JOHN SOMERSET PETROSAURUS, INC. 02824 KENNEY, W. P. SOMERSET GREAT PLAINS RESOURCES, INC. 03043 KENNY, WILLIAM PYRON ET UX SOMERSET PRODUCTION RESOURCES, INC. 11757 KERLICK FIRST SHOT (AUSTIN CHALK) EVX MIDSTREAM PARTNERS II LLC 13636 KERLIN WILDCAT PAY-DIRT PETROLEUM 14279 KERNER CARSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15523 KERR EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 16196 KERR, L. A. SOMERSET RICKAWAY ENERGY, CORP. 11155 KERRCO'S "STERLING RANCH" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12834 KERSH HC1 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19665 KERSH HC2 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19623 KERSH HC3 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19615 KERSH HC4 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19633 KERSH HC5 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19614 KERSH HC8 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19735 KERSH UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17717 KERSH UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17722 KERSH UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16698 KERSH UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16702 KERSH UNIT V LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17707 KESTREL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16369 KETCHBAW UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16080 KEVIN UNIT NIXON ROYKO OIL COMPANY 14069 KEY MINERVA-ROCKDALE SOUTHWEST RESOURCES, INC. 19194 KEYSTONE RANCH PEARSALL (AUSTIN CHALK) OILFIELD CLEANTECH WATER REC LLC 14071 KEYSTONE RANCH -A- PEARSALL (AUSTIN CHALK) OILFIELD CLEANTECH WATER REC LLC 05204 KEYSTONE/KEYSTONE RANCH PEARSALL (AUSTIN CHALK) OILFIELD CLEANTECH WATER REC LLC 13870 KHALSA SASPAMCO BLACK LAGOON OIL, L.L.C. 11412 KIDD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17033 KIDDER "A" SUTIL (BUDA) FIRST ROCK, INC. 14294 KIEFER PEARSALL (AUSTIN CHALK) MAVERICK ENERGY GROUP, INC. 13016 KIEFER, CHESTER WINDMILL CREEK (ESCONDIDO) BOLLINGER DRILLING CO. 09351 KIES EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16083 KIFER-LESTER EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16669 KIFER, L. H. PILGRIM (AUSTIN CHALK) KIDD PRODUCTION CO. 13394 KIFER, ROZELLA PILGRIM (AUSTIN CHALK) BARON ENERGY INC. 13417 KILBURN-BYRD SOMERSET K.A. BARNES OIL & GAS OPER, LLC 14031


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KILEY PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19402 KILLIAN NIXON IPACT 13932 KILLOUGH, BILLY A. A.W.P. (OLMOS) XTO ENERGY INC. 08964 KILMAN, RAY CHEROKEE (AUSTIN CHALK, LO.) CXL ENERGY LLC 05288 KILMER, ERNEST -A- JONES COVER, DONALD R. 11821 KIM DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16447 KIMBALL EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17191 KINAST, FRANK X. BATESVILLE, SOUTH (SAN MIGUEL) DIAMOND ENERGY SERVICES, LP 04431 KINAST, FRANK X. -A- BATESVILLE,SOUTH(SAN MIGUEL,SEGA CW DALCAN MANAGEMENT SVCS, LTD. 07062 KINAST, FRANK X. -B- BATESVILLE, SOUTH (ANACACHO) CW DALCAN MANAGEMENT SVCS, LTD. 07448 KINCAID PEARSALL (AUSTIN CHALK) MUELLER EXPLORATION, INC. 15333 KINCAID 195 WIPFF (GEORGETOWN) PEACOCK O & G PROPERTIES, LTD. 19883 KING DRUMMOND (AUSTIN 1400) BEDFORD OIL & GAS, INC. 13971 KING PANDORA, NW (AUSTIN CHALK) OUTLINE OIL CORP. 11462 KING PEARSALL (AUSTIN CHALK) C6 OPERATING, L.L.C. 18768 KING PEARSALL (AUSTIN CHALK) DRISCOLL S.W.D. INC. 12679 KING PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 05516 KING BROTHERS A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18051 KING BROTHERS B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18056 KING BROTHERS C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18057 KING BROTHERS D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18086 KING FEHNER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15509 KING UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16444 KING UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16469 KING UNIT C BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 19104 KING UNIT D BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 19126 KING UNIT E BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16948 KING UNIT G BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16917 KING-ERB UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18607 KING-ERB UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18012 KING-ERB UNIT C BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18857 KING-ERB UNIT D BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 19376 KING-HALL ESTATE NIXON ALCOR ENERGY, INC. 13990 KING-HALL ESTATE NIXON TEXAS SOUTH OPERATING CO, INC. 17178 KING-HALL ESTATE -A- STOCKDALE (AUSTIN CHALK) TEXAS SOUTH OPERATING CO, INC. 07503 KING, DON FAIRFIELD PARK AVENUE RESOURCES, INC. 06201 KING, HOWARD L. BEAR CREEK CAL OIL COMPANY 09894 KING, J. H. CHICON LAKE RLU OPERATING, LLC 00301 KING, J. T. KAYE (NAVARRO) CADDELL WELL SERVICE, INC. 02220 KING, J.H. KING -E- PEARSALL (AUSTIN CHALK) C6 OPERATING, L.L.C. 09748 KING, RUFUS MAG (AUSTIN CHALK) LACY 03, LLC 11999 KING, RUFUS -A- PILGRIM (AUSTIN CHALK) DEE-JAY EXPLORATION COMPANY 06868 KING, RUFUS "A" PILGRIM (BUDA) DEE-JAY EXPLORATION COMPANY 12893 KING,W.H. KAYE (NAVARRO) THREE J ENERGY, INC. 09943 KINGPIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18696 KINGSBERY BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 17004 KINNARD PEARSALL (AUSTIN CHALK) RILEY EXPLORATION, LLC 14944 KINNARD, OLGA PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 13258 KINSEL MUIL BURK ROYALTY CO., LTD. 12317 KINSEL "B" MUIL BURK ROYALTY CO., LTD. 14373 KINSEL BROWN UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16621


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KINSEL BROWN UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16640 KINSEL EARNEST UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16591 KINSEL EARNEST UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16589 KINSEL HQ UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16578 KINSEL HQ UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16823 KINSEL LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16145 KINSEL MILLETT UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16237 KINSEL MILLETT UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16513 KINSEL RR UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16883 KINSEL RR UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16988 KINSEL RR UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16872 KINSEL RR UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16866 KINSEL, E. A. MUIL (QUEEN CITY SAND) ATASCOSA PRODUCTION COMPANY, INC 01277 KINSEY COPPS UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16324 KINSEY COPPS UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16679 KINSLEY UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16834 KIRBY PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18875 KIRBY, AMY CHICON LAKE MORE TEXAS OIL 06692 KIRCHOFF EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16836 KIRK 35H PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 12956 KIRK, T.A. ET UX CARRIZO, S. (OLMOS 2370) HAMILTON, CLAY 05682 KITTIE WILDCAT ANGEL LAND CO., INC. 13564 KIWI UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18849 KKL UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17316 KKL UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16762 KKL UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16805 KKL UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17141 KKL UNIT V EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16867 KKL UNIT VI LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17142 KKL UNIT VII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16763 KLATTENHOFF UNIT LAS EAGLEVILLE (EAGLE FORD-1) INPEX EAGLE FORD, LLC 16136 KLEIMANN PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19427 KLEIN-SANCHEZ PEARSALL (AUSTIN CHALK) COX & COX PRODUCTION CO. 12703 KLEIN, M. T. DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02751 KLEIN, M. T. DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02793 KLEIN, M. T. -A- DARST CREEK (BUDA) ALLTEX OPERATING COMPANY 02881 KLEIN, M. T. -B- DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 04195 KLEINSCHMIDT, A. LA VERNIA TEXAS COASTAL RESOURCES LLC 00884 KLEMCKE -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11008 KLEMCKE -M- SOMERSET GREAT PLAINS RESOURCES, INC. 11009 KLEMCKE, AMELIA SOMERSET CALK OIL COMPANY 10741 KLEMCKE, THEKLA -B- SOMERSET CALK OIL COMPANY 07334 KLEMKE, FRED SOMERSET SEAGULL OPERATING CO., INC. 06498 KLEPAC EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15347 KLOPEK PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12417 KLOPEK, A. PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12153 KLOPEK, AL PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 04950 KLUTH SOUTHTON OILEX INT'L INVESTMENTS, INC. 09495 KLUTTS BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 12120 KM NORTH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15963 KM SOUTH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17123


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KM-COMMERCE UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 20010 KM-MILLER UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 18398 KM-WINTERBOTHAM UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19418 KNAPEK THRALL MALISH OPERATING, LLC 17734 KNAPP, LEO LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 06094 KNAPP, O. L. SOMERSET PETROSAURUS, INC. 03926 KNAPP, O.L. SOMERSET CALK OIL COMPANY 10854 KNAPPICK PEARSALL (AUSTIN CHALK) RCLJ CONSTRUCTION, INC. 12594 KNAPPICK SOMERSET CALK OIL COMPANY 10743 KNEUPPER, OTTWIN MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 07389 KNICKERBOCKER, J. -A- DUNLAP COLBY PRODUCTION RESOURCES, LLC 03860 KNIGHT SOMERSET SEAGULL OPERATING CO., INC. 03566 KNIGHT "B" SOMERSET SEAGULL OPERATING CO., INC. 11141 KNIGHT "C" SOMERSET SEAGULL OPERATING CO., INC. 11487 KNIGHT, ARCHIE SOMERSET UNDERBRINK OIL 10929 KNJ UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17803 KNOBLOCH DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02712 KNOBLOCH A DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02799 KNOBLOCH B - DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02800 KNOBLOCH OIL (EMPIRE) DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02771 KNOBLOCH, C. DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02754 KNOBLOCH, C. DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02796 KNOBLOCH, C. (CHEVRON) DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02779 KNOBLOCH, C. -A- DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02758 KNOBLOCH, C. -A- 05-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14521 KNOBLOCH, C. -B- DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02759 KNODEL -D- DARST CREEK (BUDA) ALLTEX OPERATING COMPANY 14481 KNODEL, ANNIE DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 02906 KNODEL, ANNIE DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02752 KNODEL, ANNIE DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02794 KNODEL, ANNIE, -B- DARST CREEK (BUDA) ALLTEX OPERATING COMPANY 03129 KNODEL, ANNIE, -C- DARST CREEK (BUDA) ALLTEX OPERATING COMPANY 03660 KNODEL, ANNIE, -D- DARST CREEK (BUDA) ALLTEX OPERATING COMPANY 04194 KNOPP, EDNA MAE TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06252 KNOX, ARTHUR SALT FLAT, WEST LUDWIG OIL EXPLORATIONS INC 07364 KOCH SOMERSET EVERETT OIL, INC. 11139 KOCH SOMERSET SEAGULL OPERATING CO., INC. 11225 KOCH - DILLEY STATION WILDCAT HARVEST MIDSTREAM COMPANY 14728 KODIAK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17208 KOEHLER CHICON LAKE PETRO LIONS, LLC 12278 KOEHLER LULING-BRANYON AUSTIN OPERATING, LLC. 01144 KOEHLER LULING-BRANYON CASTILLO OIL COMPANY LLC 12744 KOEHLER LULING-BRANYON GINCO OPERATING CO. 01029 KOEHLER SOMERSET EVERETT OIL, INC. 11140 KOEHLER SOMERSET K2 PETROLEUM, INC. 11114 KOEHLER SOMERSET SEAGULL OPERATING CO., INC. 11243 KOEHLER, A. -A-3- SOMERSET TRANSAMERICA ENERGY CORP. 11018 KOEHLER, A&V SOMERSET GREAT PLAINS RESOURCES, INC. 06993 KOEHLER, ARTHUR J. SOMERSET GREAT PLAINS RESOURCES, INC. 10963 KOEHLER, FRANK LULING-BRANYON CASTILLO OIL COMPANY LLC 02685 KOEHLER, FRANK LULING-BRANYON EAGLE FORD OIL CO., INC. 05887


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KOEHLER, FRANK -A- LULING-BRANYON CASTILLO OIL COMPANY LLC 00996 KOEHLER, FRANK -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 01113 KOEHLER, FRANK -B- LULING-BRANYON CASTILLO OIL COMPANY LLC 02519 KOEHLER, FRANK -C- LULING-BRANYON CASTILLO OIL COMPANY LLC 03531 KOEHLER, FRANK "A" LULING-BRANYON EAGLE FORD OIL CO., INC. 05893 KOEHLER, J SOUTH SOMERSET PETROSAURUS, INC. 11627 KOEHLER, J. SOMERSET GINCO OPERATING CO. 01631 KOEHLER, O.L. SOMERSET GREAT PLAINS RESOURCES, INC. 10961 KOEHLER, OTILLIE SOMERSET GREAT PLAINS RESOURCES, INC. 06994 KOEHOLER SOMERSET PETROSAURUS, INC. 11015 KOEMEL, J. J. CHARLOTTE (NAVARRO) GINCO OPERATING CO. 03270 KOEMEL, J.J. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 07020 KOENIG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16695 KOENIG, VICTOR SUTIL (BUDA) STOCKMAN PETROLEUM COMPANY 06130 KOENIG, W.E. FAIRFIELD CALK, ROGER D. 08550 KOENING, HERBERT LA VERNIA DOEGE, DONALD 08988 KOENNING UNIT EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15394 KOEPP, BILLY A LA VERNIA GLEN DOEGE OIL & GAS 06049 KOEPP, ERIC LA VERNIA LONGSHOT ENERGY LLC 05757 KOI UNIT ROSS LEE (AUSTIN CHALK) UNITED OPERATING, LLC 14842 KOKEL UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16017 KOLAR EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 15656 KOLENDA B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16658 KOLINEK EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15580 KOLLMAN, JOHN & GINNY COOKSEY DOEGE, DONALD 13205 KOLLODZIEJ MARCELINA CREEK (AUSTIN CHALK) BODDEN PRODUCTION 07824 KOLM UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16987 KOLODZIE, WILLIAM LA VERNIA TANGLEHEAD OPERATING, LLC 06883 KONE BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 15474 KONE UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18912 KONE UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18913 KOONSEN WILDCAT WINCHESTER OIL & GAS LLC 19067 KOONSEN MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 01242 KORN BIG WELLS (SAN MIGUEL) SPRI OIL & GAS, LLC 19289 KORN A BIG WELLS (SAN MIGUEL) SPRI OIL & GAS, LLC 19771 KORNFUEHRER LULING-BRANYON NORTH SOUTH OIL, LLC 17330 KORNFUEHRER LULING BRANYON R 40 EXC NORTH SOUTH OIL, LLC 19356 KORUS A VAS II SOMERSET GREAT PLAINS RESOURCES, INC. 11449 KORUS OMEGA SOMERSET GREAT PLAINS RESOURCES, INC. 11429 KORUS, C. F. -D- DINSMOOR (CARRIZO) GUINN OPERATING COMPANY, LLC 00509 KORZEKWA UNIT WEINERT (BUDA) EVEREST RESOURCE COMPANY 18520 KOSKA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17366 KOSUB CHICON LAKE K OIL COMPANY 09535 KOSUB UNIT LA VERNIA, WEST (AUSTIN CHALK) ATTIS OPERATING I INC. 14496 KOSUB-HEWELL EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17475 KOTARA EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16061 KOTARA - KOLENDA B 2 EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 19504 KOTARA CARTER UNIT INDIO TANKS (PEARSALL) EOG RESOURCES, INC. 17118 KOTARA D EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16556 KOTARA, EMIL J. ET AL LYSSY (CARRIZO -D-) TEXSTAR DRILLING, INC. 14422 KOTARA, ET AL LYSSY (2100 STRINGER) TEXSTAR DRILLING, INC. 16178


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KOTHMAN -C- PENA CREEK (SAN MIGUEL 3RD) HAMILTON, CLAY 04410 KOTHMAN-BARNARD PENA CREEK (SAN MIGUEL 2ND) HAMILTON, J. R. 14759 KOTHMAN, I. O. PENA CREEK (SAN MIGUEL 3RD) 4 SWIFT SERVICE LLC 04364 KOTHMAN, I.O.K. PENA CREEK (OLMOS 2350) FLINT OAK ENERGY, LLC 11910 KOTHMANN BACKDRAFT (OLMOS) VENADO OPERATING COMPANY LLC 15002 KOTHMANN UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15784 KOTHMANN 301 BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19526 KOTHMANN 302 BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19565 KOTHMANN 303 BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19612 KOTHMANN-KERR BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16777 KOTHMANN-KERR UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16876 KOTHMANN-RANCH WILDCAT VENADO OPERATING COMPANY LLC 17558 KOTHMANN-RANCH BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15735 KOTHMANN, E. B. CHARLOTTE, SW. (OLMOS, UP.) VAC-U-LIFT PRODUCTION CO.,INC. 03489 KOTZEBUE PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 17063 KOTZUR UNIT MARCELINA CREEK (AUSTIN CHALK) GIDDINGS PIPE & SUPPLY, INC. 07532 KOURS, SOUTH SOMERSET GREAT PLAINS RESOURCES, INC. 11021 KOWALIK UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16465 KOWALIK UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16467 KOWR ALLOCATION #1 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19406 KOWRS ALLOCATION #2 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19405 KOWRS ALLOCATION #3 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19422 KOWRS ALLOCATION #4 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19409 KOWRS ALLOCATION #5 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19419 KOZLOW, CAROLINE LULING-BRANYON LEFT BEHIND RECOVERY, LLC 15730 KRAATZ, LOUIS MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 03990 KRAWETZ -A- PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12420 KRAWETZ RANCH A UNIT BRISCOE RANCH (EAGLEFORD) CALLON (EAGLE FORD) LLC 16068 KRELL ACLETO CREEK (POTH B) JOHANSON OIL 14812 KRELL -A- ACLETO CREEK (POTH C) RAINER ENERGY, INC. 09650 KRELL BROTHERS ACLETO CREEK (POTH B) RAINER ENERGY, INC. 09624 KRELL, W.L. HOLSTEIN (POTH B, LO.) RAINER ENERGY, INC. 03981 KRISJENN RANCH SWD PEARSALL (AUSTIN CHALK) C&E PRODUCTION, LLC 17813 KROLL, JOHN C. MARCELINA CREEK (AUSTIN CHALK) SYLVAN ENERGY, LLC 09432 KRUEGER-HOELSCHER UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16529 KRUEGER-ZUNKER UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16366 KRUEGER, W.A. ET AL MILBUR (NAVARRO) BETRO, INC. 05845 KRUPESH MINERVA-ROCKDALE MK EXPLORATIONS, LLC 19388 KRUPESH MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 19064 KRUSE, ROSE M. MARCELINA CREEK (BUDA) NORDSTRAND ENGINEERING, INC. 12290 KUBACAK PEARSALL (AUSTIN CHALK) HALE, JIM 10353 KUBIAK, DAN -A- MINERVA-ROCKDALE DSW PRODUCTION CORP. 05888 KUDU UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16977 KUENSTLER -A- SOMERSET SEEKER OIL COMPANY, INCORPORATED 11775 KUENSTLER, C.J. SOMERSET SEEKER OIL COMPANY, INCORPORATED 08683 KUHLMAN, GEORGE REASOR (COOKSEY SAND) KOCH, I. ERNEST 02070 KUHN WILDCAT PRODUCTION RESOURCES, INC. 18639 KUHN KINGSBURY (EDWARDS) PRODUCTION RESOURCES, INC. 18910 KUHN KINGSBURY, S. (BUDA LIME) PRODUCTION RESOURCES, INC. 19639 KUHN KINGSBURY, W. (AUSTIN CHALK) PRODUCTION RESOURCES, INC. 18923 KUHN SWD KINGSBURY (BUDA LIME) PRODUCTION RESOURCES, INC. 18064


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KUHNEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18183 KUNTSCHIK PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 12530 KUNTSCHIK-ROEBER PILGRIM (AUSTIN CHALK) ORIGIN PRODUCTION GROUP LLC 15708 KURZ SOMERSET SEAGULL OPERATING CO., INC. 11232 KURZ -A- SOMERSET BRANDER, SAM H. 11108 KURZ -A- SOMERSET SEAGULL OPERATING CO., INC. 11222 KURZ -B- SOMERSET SEAGULL OPERATING CO., INC. 11226 KURZ -C- SOMERSET SEAGULL OPERATING CO., INC. 11240 KURZ, BEE T., ETAL SOMERSET DOWNING, MARK 03219 KURZ, EVA -7A- SOMERSET GREAT PLAINS RESOURCES, INC. 12839 KURZ, GARY SOMERSET BRANDER, SAM H. 11109 KURZ, R.G. JR. SOMERSET VARGAS OIL & GAS 08684 KURZ#2 SOMERSET PETROSAURUS, INC. 18343 KUSAK UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16259 KUTAC UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17390 KUYKENDALL EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16435 KUYKENDALL RANCH EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 16358 KUYKENDALL UNIT EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 16694 KYLE GOOD LUCK (SAN MIGUEL) BOLIN, D. M. 06434 KYLIE UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17080 KYNETTE, P. CAMPANA, SOUTH ATLAS OPERATING LLC 00177 KYNETTE, P. CAMPANA, SOUTH (ARGO) ATLAS OPERATING LLC 11982 L & J LEE UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18031 L KELLNER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17039 L. S. U. BURGER PLEASANTON (EDWARDS LIME) EXCALIBUR E & P, LLC 14067 L. S. U. LEAL PLEASANTON (EDWARDS LIME) SNG OPERATING, LLC 14068 L.S.U. FERRY PLEASANTON (EDWARDS LIME) RICKAWAY ENERGY, CORP. 14128 L.S.U. FERRY PLEASANTON (EDWARDS LIME) SNG OPERATING, LLC 14257 LA BANDERA RANCH BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 15233 LA BANDERA RANCH HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 17340 LA BANDERA RANCH UNIT A BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 17166 LA BANDERA RANCH UNIT C BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19642 LA CORONA RANCH EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 16962 LA CORONA RANCH UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 16545 LA GRANGE SOMERSET UNDERBRINK OIL 01632 LA GRANGE, ETHEL W. SOMERSET PETROSAURUS, INC. 03191 LA JOLLA CORP PIEDRA CALIENTE (10900) SURE FLOW OIL & GAS, INC. 14633 LA MASTER WILDCAT SERPENTINE OIL CO. 12246 LA MOTA ZAV BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17759 LA ROSITA PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14994 LABAY, LOUIS MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 08120 LABAY, LOUIS (A) MINERVA-ROCKDALE NORTHLAND PETROLEUM, LLC 10221 LABUS UNIT MARCELINA CREEK (BUDA) OILSTONE OPERATING, LLC 09919 LABUS, FRANK MARCELINA CREEK (AUSTIN CHALK) JEM ENERGY 06645 LABUS, PROSPER MARCELINA CREEK (BUDA) FIRST ROCK, INC. 14249 LACKEY DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 13882 LACKEY DALE-MCBRIDE HAZELETT OIL, INC. 12027 LACKEY -A- DALE-MCBRIDE MEB, LLC 04113 LACKEY FIVE PEARSALL (BUDA, S.) CML EXPLORATION, LLC 19988 LACKEY, C. L. -B- DALE-MCBRIDE EXOIL RESOURCES, INC. 04114 LACKEY, C.L. "C" DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 05670


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LACKEY, C.L. "O" DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 13905 LACKEY, E. T. DALE-MCBRIDE HAZELETT OIL, INC. 04099 LACKEY, V. LULING-BRANYON ATKINSON, L. G., LLC 06684 LADUKE, A.C. PEARSALL (AUSTIN CHALK) COX & COX PRODUCTION CO. 12527 LAGUNILLAS CAMP EAGLEVILLE (EAGLE FORD-1) PETROEDGE OPERATING IV LLC 15701 LAMASTUS NIXON BLUE RIVER INC. 14997 LAMASTUS STOCKDALE, EAST (BUDA) BLUE RIVER INC. 14935 LAMBECK NIXON ALCOR ENERGY, INC. 12832 LAMBECK PANDORA, NW (AUSTIN CHALK) ALCOR ENERGY, INC. 11581 LAMBECK PANDORA, NW (AUSTIN CHALK) SUMMIT ENERGY OPERATING, CO. 15244 LAMBECK, A.H. JR. ET UX -A- ACLETO CREEK (POTH B) SILVER FALLS PETROLEUM CORP. 10517 LAMKIN, W. H. FAIRFIELD CRYSTAL RESOURCES, INC 02464 LAMM, ROBERT P. CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 02856 LAMMERTS PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 05478 LAMMERTS A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15411 LAMON, JOSEPH CHICON LAKE GENIE OIL COMPANY 00296 LAMPKIN, J. L. MINERVA-ROCKDALE STEDMAN OIL & GAS CO. 05759 LAMZA SWD FIRST SHOT (AUSTIN CHALK) CWR MANAGEMENT LLC 15709 LAMZA, CHAS. ET AL MARCELINA CREEK (AUSTIN CHALK) SHIKAR OPERATING CO. 08882 LANCASTER AGI DERBY (GLEN ROSE H2S DISPOSAL) SOUTHCROSS MIDSTREAM UTILITY, LP 16344 LANCASTER C PEARSALL (BUDA LIME) PERDIDO ENERGY, LLC 15875 LANCELOT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18401 LANDER PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19135 LANDGREBE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15481 LANDRUM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18009 LANDRUM, WILLIS L. SOMERSET EVERETT OIL, INC. 10795 LANFORD, P.B. SOMERSET GREAT PLAINS RESOURCES, INC. 08638 LANFORD, S. T. TAYLOR-INA PARK AVENUE RESOURCES, INC. 05142 LANG PEARSALL (BUDA, S.) MUELLER EXPLORATION, INC. 17442 LANG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17644 LANG UNIT INDIO TANKS (PEARSALL) EOG RESOURCES, INC. 17119 LANG, JESSE ET UX FAIRFIELD LANG, JESSE W. 08543 LANGE -A- A.W.P. (OLMOS) XTO ENERGY INC. 11827 LANGE E EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16993 LANGE, E. A.W.P. (OLMOS) XTO ENERGY INC. 08131 LANGE, L. F. WILDCAT RHD HOLDINGS, L.L.C. 14261 LANGLEY-ALLBRIGHT FENTRESS (1750) CHAPARRAL NATURAL RESOURCES,INC. 14938 LANGLEY-ALLBRIGHT FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 18621 LANGLEY, R. A.-PORTER, E. SOMERSET LUCROS INTERNATIONAL CORPORATION 03746 LANSFORD PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15502 LAQUE -A- SOMERSET PETROLEUM OILFIELD SERVICES INC. 11187 LAQUE -C- SOMERSET PETROSAURUS, INC. 10944 LARA, QUENTIN FAIRFIELD CRYSTAL RESOURCES, INC 01997 LARISON UNIT SALT FLAT OCCIDENTAL ENERGY COMPANY, INC. 09140 LARK JACOB LS OIL 00716 LARK JACOB TEXAS SECONDARY OIL CORPORATION 10716 LARK "D-E-F" JACOB GINCO OPERATING CO. 03980 LARK -A- JACOB INDIAN OIL LTD. 11345 LARK -A- JACOB LS OIL 11752 LARK -G- JACOB GINCO OPERATING CO. 02187 LARK /80 AC./ JACOB INDIAN OIL LTD. 00712


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LARK "B" JACOB LS OIL 13311 LARK NORTH JACOB BULL OIL COMPANY, LLC 11876 LARK NORTH JACOB BULL OIL COMPANY, LLC 15073 LARK RANCH EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 16551 LARRY BLAKEWAY (DIXON SAND) TEXOWA, LLC 14517 LARS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17382 LARSON LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15954 LARSON UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16096 LAS VEGAS RANCH BIG WELLS (SAN MIGUEL) TRINITY OPERATING (USG), LLC 09683 LAS VEGAS RANCH PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 12368 LASHLEY SUTIL (REEF) DRUM OIL & GAS, INC. 09588 LASITER, A.L. A.W.P. (OLMOS) XTO ENERGY INC. 09422 LASITER, HUBERT -A- PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14248 LASITER, M.L. BIG WELLS (SAN MIGUEL) BLUESTAR ENERGY, INC. 13695 LASKOWSKI MARCELINA CREEK (AUSTIN CHALK) GLOBAL XRC CORP 14156 LASKOWSKI C EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16972 LASKOWSKI OIL UNIT M.J.M. (WILCOX 3750) GREENWERKS OUTDOOR SERVICES LLC 14101 LASKOWSKI, A WILDCAT PREVAIL ENERGY, INCORPORATED 14264 LASKOWSKI, ANTON M.J.M. (WILCOX 3750) GINCO OPERATING CO. 04219 LASSETER & EPPRIGHT EAGLEVILLE (EAGLE FORD-1) ROSETTA RESOURCES OPERATING LP 16629 LASSETER & EPPRIGHT J UNIT BRISCOE RANCH (EAGLEFORD) ROSETTA RESOURCES OPERATING LP 17771 LASSETER & EPPRIGHT UNIT A BRISCOE RANCH (EAGLEFORD) ROSETTA RESOURCES OPERATING LP 16738 LASSETER & EPPRIGHT UNIT B BRISCOE RANCH (EAGLEFORD) ROSETTA RESOURCES OPERATING LP 17031 LASSETER & EPPRIGHT UNIT K BRISCOE RANCH (EAGLEFORD) ROSETTA RESOURCES OPERATING LP 19008 LATHAM MCKNIGHT HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 18756 LATHAM-MCKNIGHT WILDCAT EL TORO RESOURCES LLC 18964 LATHAM-MCKNIGHT BRISCOE RANCH (EAGLEFORD) EL TORO RESOURCES LLC 18922 LATHAM-MCKNIGHT LORENZO (AUSTIN CHALK) EL TORO RESOURCES LLC 19167 LAUGHLIN-COOK EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16331 LAUGHLIN-RAWLS EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18180 LAURETTE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17659 LAVACA UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18605 LAVENDER-THIEDE PEACH CREEK (AUSTIN CHALK) PENN VIRGINIA OIL & GAS, L.P. 13677 LAWLER, MAURICE NORTH LULING-BRANYON GREAT PLAINS RESOURCES, INC. 13849 LAWLEY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17536 LAWRENCE NIXON L & L PIPE & SUPPLY INC. 08129 LAWRENCE PEACH CREEK (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 08365 LAWSON WEST LAWSON WEST (REEF) FUEGO ENERGY, LLC 14789 LAWSON, OSCAR W. FAIRFIELD AZX PETROLEUM 07589 LAY LULING-BRANYON B & S OPERATING COMPANY LLC 18524 LAY WEST UNIT EAGLEVILLE (EAGLE FORD-1) MAGNOLIA OIL & GAS OPERATING LLC 19180 LAY, LEON LULING-BRANYON LAY, WARREN LEON 03603 LAY, LEON -A- LULING-BRANYON B & S OPERATING COMPANY LLC 15257 LAYLA SWD EAGLEVILLE (EAGLE FORD-1) GOODNIGHT MIDSTREAM PERMIAN, LLC 19147 LAYTON -A- A.W.P. (OLMOS) XTO ENERGY INC. 10500 LAYTON A EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18751 LAZY A COTULLA BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15213 LAZY A COTULLA UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18825 LAZY A COTULLA UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16847 LAZY A COTULLA UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16846 LAZY SEVEN RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16014


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LAZY SEVEN RANCH B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16034 LEA SWD PEARSALL (OLMOS -A-) NGL WATERSOLUTIONS EAGLEFORD,LLC 15833 LEARY TRUST PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14936 LEASMAN-HALL UNIT PANDORA, NW (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 12335 LEASMAN, M.L. PANDORA, NW (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 11886 LEASMAN, MARY LOU ACLETO CREEK (POTH B) MAGNUM OILFIELD SERVICES LLC 07920 LECHWE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18451 LEDWIG PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 13751 LEDWIG EAST UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16683 LEDWIG EAST UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16802 LEDWIG EAST UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16806 LEDWIG EAST UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16747 LEDWIG KINSEY UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17143 LEDWIG KINSEY UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16842 LEDWIG KINSEY UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16869 LEDWIG LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16793 LEDWIG 34H PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 12710 LEE EAST END SOMERSET PRODUCTION RESOURCES, INC. 11621 LEE RANCH WILDCAT TEXAS SOUTHERN RESOURCES, INC. 13565 LEE WHEELER -C- A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 15415 LEE, W.T., SR. SOMERSET PRODUCTION RESOURCES, INC. 11390 LEFEVRE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16712 LEGACY/REYNAUD-WEST PEARSALL (AUSTIN CHALK) SJTC HOLDINGS, INC. 13651 LEHMAN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16544 LEHMAN LULING-BRANYON AUSTIN OPERATING, LLC. 04222 LEHMAN PEARSALL (AUSTIN CHALK) COHORT PETROLEUM MANAGEMENT, LLC 12533 LEHMAN A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18619 LEHMAN B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18834 LEHMAN BF ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19938 LEHMAN B2 ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19645 LEHMAN D ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19729 LEHMAN D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18248 LEHMAN E UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17573 LEHMAN F UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19872 LEHMAN, REED S. GRAIN CO. SOUTHTON OILEX INT'L INVESTMENTS, INC. 09463 LEHMANN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16652 LEHMANN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16644 LEHMANN, O., ETAL LULING-BRANYON AUSTIN OPERATING, LLC. 03100 LEHMBERG SOMERSET GREAT PLAINS RESOURCES, INC. 11274 LEIGHTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18111 LEMON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18148 LENERT, GEORGE E. JOURDANTON VIRTEX OPERATING COMPANY, INC. 00737 LENERT, GEORGE E. JOURDANTON (NIXON SAND) HD OIL COMPANY 00757 LENERT, GEORGE E. JOURDANTON (QUEEN CITY) HD OIL COMPANY 00762 LENERT, GEORGE E. JOURDANTON (SPARTA SAND) HD OIL COMPANY 00767 LENNON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17090 LENNON, J. J. NIXON AMPAK OIL COMPANY 13946 LENZ LA VERNIA DONOCO OIL COMPANY 02915 LENZ, ADOLF -B- LA VERNIA J.A.G. OIL & GAS 00822 LENZ, ADOLPH LA VERNIA DOEGE, HARRY P. 00895 LENZ, ADOLPH -A- LA VERNIA THREE J ENERGY, INC. 06204


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LENZ, ADOLPH -X- LA VERNIA THREE J ENERGY, INC. 08429 LENZ, J. -A- LA VERNIA J.A.G. OIL & GAS 10023 LENZ, JAMES C. LA VERNIA J.A.G. OIL & GAS 00835 LENZ, LOUIS LA VERNIA DONOCO OIL COMPANY 04639 LENZ, LOUIS II LA VERNIA DONOCO OIL COMPANY 00840 LEPORI UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16562 LEPORI UNIT SMILEY (AUSTIN CHALK) EOG RESOURCES, INC. 18873 LEPPARD EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 18306 LEPPARD "C" PEARSALL (AUSTIN CHALK) JOHNSON SANFORD OP CO., LTD 13059 LEPPARD RANCH "B" PEARSALL (AUSTIN CHALK) JOHNSON SANFORD OP CO., LTD 12951 LEPPARD, ANNIE MAE PEARSALL (AUSTIN CHALK) JOHNSON SANFORD OP CO., LTD 11331 LEPPERT, E. G. CHICON LAKE FOUR FORTY ONE OIL CO. 06185 LERMA UNIT PANDORA, NW (AUSTIN CHALK) PRODUCTION RESOURCES, INC. 13886 LERMA UNIT STOCKDALE, N. (CHALK, UPPER) PRODUCTION RESOURCES, INC. 11944 LESLIE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17425 LESLIE, VERA PEARSALL (AUSTIN CHALK) TEXAN PRODUCTION COMPANY, INC. 13454 LESLIE, VERA C. PEARSALL (AUSTIN CHALK) D. AND Y. YUNK PRODUCTIONS 05808 LESSOR FIRST SHOT (AUSTIN CHALK) BARNETT ENERGY, INC. 12991 LESSOR A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16451 LESSOR B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16687 LESSOR C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17588 LESSOR D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17288 LESTER POWERS UNIT EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 19138 LESTER RANCH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15918 LESTER UNIT PILGRIM (AUSTIN CHALK) BARON ENERGY INC. 13600 LESTER-BRUNS UNIT CHRISTIAN (6800) MODERN EXPLORATION, INC. 13193 LESTER-RICOCHET EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16618 LESTER-RICOCHET 2 SMILEY (AUSTIN CHALK) AUTERRA OPERATING, LLC 17975 LESTER, J.B. MAG (BUDA) LONESTAR OPERATING, LLC 11580 LESTER, T.E. PILGRIM (AUSTIN CHALK) BARON ENERGY INC. 13418 LESTER, THOMAS E JR EAGLEVILLE (EAGLE FORD-1) CL&F OPERATING LLC 17134 LEVINE, BEN- LEEDS, L.D. EL INDIO, N. (OLMOS A-11) JANCO OPERATING 10553 LEWIS BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 18073 LEWIS EAGLEVILLE (EAGLE FORD-1) CL&F OPERATING LLC 16398 LEWIS RIMROCK (CANYON 4100) RIO-TEX, INC. 14447 LEWIS SAN MIGUEL CREEK (WILCOX CONS.) ENERQUEST OPERATING L.L.C. 14675 LEWIS UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 16102 LEWIS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17388 LEWIS, RAY FAIRFIELD GREAT PLAINS RESOURCES, INC. 09261 LEWIS, W&L SOMERSET GREAT PLAINS RESOURCES, INC. 10953 LEWTON 203 PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14420 LEY SOMERSET TEJONES OPERATING CORPORATION 11932 LEYENDECKER LULING BRANYON R 40 EXC NORTH SOUTH OIL, LLC 19330 LEYENDECKER, R. F. LULING-BRANYON LTX OIL COMPANY, L.L.C. 02256 LEYENDECKER, R. F. LULING BRANYON R 40 EXC NORTH SOUTH OIL, LLC 19352 LEYENDECKER, R. F. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 01123 LEYENDECKER, R. F. "A" LULING-BRANYON EAGLE FORD OIL CO., INC. 02203 LIBERATORE RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16552 LIBERATORE RANCH B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16403 LIBERSAT EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 19032 LIBERSAT, MAY A.W.P. (OLMOS) SOUTHWEST ROYALTIES, INC. 10413


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LIEBE-HOUSE -A- FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 12588 LIEBE-HOUSE -B- FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 12603 LIEBE-HOUSE A FAIRFIELD SIMCO OIL, LLC 07002 LIEBE-HOUSE 18 FAIRFIELD SIMCO OIL, LLC 13718 LIESMAN EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 17185 LIGHT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15316 LIGHT MINERALS SAGE CREEK, W. (2ND OLMOS A-3) LIGHTNING OIL COMPANY 14312 LIGHT RANCH BRISCOE RANCH (EAGLEFORD) VERDUN OIL & GAS LLC 15336 LIGHTNING UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18941 LIGHTSEY, K. TENNEY CREEK B-G OPERATING INC. 08668 LILLY BEAR CREEK CAL OIL COMPANY 17264 LIME UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18149 LIMMER UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16711 LIND, LESLIE KIMBRO ALTEX PETROLEUM, INC. 07802 LINDHOLM JAKE HAMON (EDRINGTON SAND) TEXEGY OPERATING COMPANY LLC 17958 LINDHOLM, STEVE RHODE RANCH, SOUTH (2990) H-M RESOURCE MANAGEMENT, INC. 08361 LINNE, O. W. LINNE (POTH -A- SAND) GAUNTT, INC. 00964 LINNE,O.W.,-A- LINNE, S. (POTH -A- SAND) GAUNTT, INC. 04447 LINNSTAEDTER MILANO (GEORGETOWN) VICEROY PETROLEUM, LP 06520 LINNSTAEDTER, VERNON E. CHEROKEE (NACATOCH) VICEROY PETROLEUM, LP 05611 LINSCOMB, ETAL, UNIT 1 SALT FLAT BAIR'S LEASE SERVICE, INC. 02976 LION UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17725 LIPPE-HYATT UNIT PLUM CREEK (AUSTIN CHALK) H & K OIL COMPANY (A) 08551 LITTLE DARLIN #2 PLUM CREEK (AUSTIN CHALK) H & K OIL COMPANY (A) 11739 LITTLE L & C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15250 LITTLE MINERALS PALMERAS (OLMOS) FIELD PETROLEUM CORP. 17748 LITTLE MINERALS -A- PALMERAS (OLMOS) FIELD PETROLEUM CORP. 17839 LITTLE REATA UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17503 LITTLE SONNY PEARSALL (AUSTIN CHALK) INGRAM, J. OIL & GAS, INC. 13744 LITTLE 179 PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14035 LITTLE-DUKES UNIT DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16272 LITTLE, JESSE A. SOMERSET GREAT PLAINS RESOURCES, INC. 06419 LITTLE, VIRGINIA L. PEARSALL (NAVARRO SAND) BIGFOOT OIL LLC 01370 LIVENGOOD LULING-BRANYON IRONROCK ENERGY CORPORATION 03553 LIZANA EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15339 LIZANA UNIT EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15703 LLM NORTH BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 19495 LLM SOUTH BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 19132 LLM UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17477 LLM ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15624 LLM ZAV SOUTH BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18771 LLOYD HURT A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 19879 LLOYD HURT AC-C LORENZO (AUSTIN CHALK) MATADOR PRODUCTION COMPANY 19877 LLOYD HURT B EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 19887 LLOYD HURT C EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 19888 LLOYD HURT D EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 19880 LOCKE PARTNERSHIP EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16241 LOCKE UNIT IMOGENE (ESCONDIDO A) ENDEAVOR NATURAL GAS, LP 17648 LOCKHART, PAUL A. JR. SOMERSET TEXAS SECONDARY OIL CORPORATION 10899 LOCKHART, PAUL A. SR. SOMERSET TEXAS SECONDARY OIL CORPORATION 10900 LOCKWOOD, A. M. HORN (5300 SAND) PEARL, BILL H. PRODUCTIONS, INC. 02226


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LOCKWOOD, A.M. CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 10074 LOCUS, TERRA LA VERNIA G & J ENERGY 09733 LOESSBERG -B- FAIRFIELD CRYSTAL RESOURCES, INC 06048 LOESSBERG "C" FAIRFIELD CRYSTAL RESOURCES, INC 06172 LOEWENSTEIN MINERVA-ROCKDALE PRICE OPERATING, LLC 01188 LOFTON RIDDLE HERITAGE ENERGY, INC. (NV) 14243 LOGAN, J.C. COST (BUDA) EXPRESS OIL CO. 07553 LOKEY, K.R. NIXON, SE (AUSTIN CHALK) LEMON, RICHARD G. 10603 LOMA VISTA ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16882 LONE OAK GROCERY EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15989 LONESTAR OPERATING SWD PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 18888 LONESTAR UNIT PLEASANTON (EDWARDS LIME) EXCALIBUR E & P, LLC 14090 LONG SOMERSET EVERETT OIL, INC. 11972 LONG, J.Y. SOMERSET GREAT PLAINS RESOURCES, INC. 12175 LONGCOPE-PRATT SPILLER GEOMEG ENERGY OPERATING CO., LLC 09116 LONGCOPE-PRATT -A- SPILLER GEOMEG ENERGY OPERATING CO., LLC 08721 LONGCOPE-PRATT -B- SPILLER GEOMEG ENERGY OPERATING CO., LLC 09117 LONGCOPE"B"--PRATT"A" SPILLER GEOMEG ENERGY OPERATING CO., LLC 08903 LONGHORN PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 15280 LONGHORN PEARSALL (BUDA LIME) TRINITY OPERATING (USG), LLC 17427 LONGHORN A EAGLE FORD POOLED UT EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19760 LONGORIA, THOS.,ET.UX. SOMERSET EVERETT OIL, INC. 06436 LOOMIS UNIT WILDCAT EOG RESOURCES, INC. 17564 LOOMIS, JOE PILGRIM (AUSTIN CHALK) BARON ENERGY INC. 14998 LOPEZ SOMERSET GREAT PLAINS RESOURCES, INC. 11023 LOPEZ UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18394 LOPEZ UNIT A LORENZO (AUSTIN CHALK) MURPHY EXPL. & PROD. CO. - USA 18887 LOPEZ, JULIAN SALT FLAT LUTEX OIL, LTD. 03102 LOPEZ, L.L. FAIRFIELD GINCO OPERATING CO. 06652 LOPEZ, MARTIN ALFRED HIGGINS GEO-GRAPHIC PRODUCTION, INC. 14110 LOPEZ, TOMASA RANGEL SALT FLAT SHEFTS & SHEFTS, INC. 03026 LORD A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15886 LORD C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16979 LORD D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16360 LORD-RIEDEL EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 19991 LORENZ NIXON SUMMIT ENERGY OPERATING, CO. 13956 LORENZ, J. P. /WEST/ ACLETO CREEK (POTH SAND) SWIESS & THOMAS 00002 LORENZ, W. W. NIXON ALCOR ENERGY, INC. 11774 LORENZ, W. W. STOCKDALE, EAST (CHALK, UPPER) SLINGSHOT OIL & GAS 11823 LORENZ, W.W. UNIT NIXON AP TEXAS ENERGY, INC. 11843 LOS ANGELES SWD LOS ANGELES (4800) NGL WATERSOLUTIONS EAGLEFORD,LLC 15644 LOS ANGELES UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15990 LOSOYA SOMERSET GREAT PLAINS RESOURCES, INC. 10935 LOTHRINGER BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 19871 LOTHRINGER PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 19441 LOTTIE LEE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16446 LOTTIE LEE B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16851 LOTTIE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16821 LOVE, EDNA CHEROKEE (NAVARRO) CXL ENERGY LLC 07682 LOVE, EDNA MILBUR (POTH) CXL ENERGY LLC 05717 LOVE, JOHN DUNLAP GARRISON LTD. 08002


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LOVE, JOHN L. DUNLAP GARRISON LTD. 06454 LOVE, JOHN L. -A- DUNLAP GARRISON LTD. 07834 LOVE, JOHN L. -C- DUNLAP GARRISON LTD. 12399 LOVE, L. W. CHEROKEE (NAVARRO) CXL ENERGY LLC 15215 LOVE, L. W. MILBUR (POTH) CXL ENERGY LLC 15214 LOVE, R. B. CHARLOTTE (NAVARRO) JM CALK OPERATING, LLC 03317 LOVELADY, GARY -B- LA VERNIA ALCORN ENERGY, L.L.C. 06852 LOVELL DALE-MCBRIDE R & S OIL PRODUCTION CO. 13840 LOW, N.R. DUNLAP AUSTIN OPERATING, LLC. 06410 LOWE PASTURE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16277 LOWE PASTURE A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18807 LOWE, SAMMY A. CHICON LAKE RLU OIL & GAS, INC. 07749 LOWERY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16964 LOWMAN, R. P. STAPLES AUSTIN OPERATING, LLC. 06328 LOWMAN, R.G. STAPLES AUSTIN OPERATING, LLC. 06281 LOZANO, HECTOR KYOTE LAHOMA PROPERTIES, INC. 10366 LOZANO, HECTOR C. KYOTE WSM 08603 LPO CALAME BIG FOOT LP OPERATING, LLC 19230 LSR UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19248 LSWT INDIO TANKS (PEARSALL) CINCO OIL & GAS, LLC 17897 LT PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18916 LUBEL UNIT #1 SOMERSET PETRO-TEX ENERGY & EXPL.CO.,INC. 12132 LUBIANSKI, EMIL COOKSEY FARMER, DON 06839 LUCAS TENNEY CREEK AUSTIN OPERATING, LLC. 08208 LUCAS 'B' EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15895 LUCAS 'C' EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15882 LUCAS "A" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15778 LUCAS, A.L. -A- MINERVA-ROCKDALE MIS-TEX OIL CORPORATION 08613 LUCE, ABE LULING-BRANYON GEOMEG ENERGY OPERATING CO., LLC 14289 LUCE, ABE LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 01143 LUCHERK UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 19997 LUCI LABAY MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 17184 LUCKSINGER, PAUL LADY SHARON (DALE LIME) JOE R. CHEATHAM OIL COMPANY 13350 LUCY ALDERMAN A FAIRFIELD COPESTONE OPERATING, LLC 18707 LUCY ALDERMAN B FAIRFIELD COPESTONE OPERATING, LLC 18735 LUCY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17174 LUDDEKE, HERMAN LA VERNIA ALCORN RESOURCES, LLC 06016 LUEDERS SOMERSET GREAT PLAINS RESOURCES, INC. 11255 LUEDERS-PEGG UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 11262 LUETGE MINERVA-ROCKDALE PETRO DELTA 01250 LUETGE, LOUIS UNIT BULLOH (NAVARRO) MICRO OPERATING, INC. 05692 LUETGE, O. F. MINERVA-ROCKDALE PRICE OPERATING, LLC 01186 LUFFEL BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15292 LUJAN, EMILIA -B- CHARLOTTE (AUSTIN CHALK) J.P. OIL COMPANY, INC. 03266 LUJAN, EMILIA -B- CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 03268 LUJAN, N. R. CHARLOTTE, NORTH 3-L DRILLING 03997 LUKER, CARL S. FAIRFIELD LUKER, CARL S. 10482 LULING AIRPORT DUNLAP GEOMEG ENERGY OPERATING CO., LLC 12474 LULING AIRPORT DUNLAP PRONTO SERVICES 03138 LULING COUNTRY CLUB SALT FLAT, WEST E. T. OIL COMPANY 06825 LULING FOUNDATION SALT FLAT BAIR'S LEASE SERVICE, INC. 02989


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LULING FOUNDATION SALT FLAT, WEST ARMIDILLO OIL COMPANY 07829 LULING FOUNDATION SPILLER PRONTO SERVICES 01685 LULING FOUNDATION, THE SALT FLAT ARMIDILLO OIL COMPANY 02986 LULING TOWNSITE UNIT SALT FLAT REDSKIN OIL LLC 03187 LULING TOWNSITE UNIT NO. 2 SALT FLAT BLALACK, JAMES WILLIAM 03189 LULING UNIT #2 SALT FLAT CASTILLO OIL COMPANY LLC 02951 LULING UNIT #3 SALT FLAT CASTILLO OIL COMPANY LLC 02984 LULING UNIT #4 SALT FLAT CASTILLO OIL COMPANY LLC 02981 LULING UNIT #5 SALT FLAT CASTILLO OIL COMPANY LLC 02960 LULING UNIT #8 SALT FLAT CASTILLO OIL COMPANY LLC 02985 LUMPKINS, GEO. B. MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 03070 LUNA, MONICO PRUITT, S. (ESCONDIDO) HOME PETROLEUM CORP. 09036 LUNDGREN, FRED JR. WILDCAT LUNDGREN, FRED, JR. 09712 LUPE, JOHN B. -B- BIG WELLS (SAN MIGUEL) OVERSTREET, JAMIE L 05165 LUPE, JOHN B. -D- BIG WELLS (SAN MIGUEL) OVERSTREET, JAMIE L 14183 LUPE, JOHN B. -E- BIG WELLS (SAN MIGUEL) BLUESTAR ENERGY, INC. 14186 LUPE, JOHN B. A BIG WELLS (SAN MIGUEL) OVERSTREET, JAMIE L 14166 LUPE, JOHN B. C BIG WELLS (SAN MIGUEL) OVERSTREET, JAMIE L 14167 LVF SCHIFFERS MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 11969 LYDA/GOSE SOMERSET RAMPAGE EXPLORATION, INC. 08486 LYDA/GOSE -A- SOMERSET RAMPAGE EXPLORATION, INC. 08542 LYDA/MCG SOMERSET RAMPAGE EXPLORATION, INC. 08156 LYDA/TERP UNIT -A- SOMERSET RAMPAGE EXPLORATION, INC. 08031 LYDA/TERP UNIT -B- SOMERSET RAMPAGE EXPLORATION, INC. 08032 LYDA, GERALD SOMERSET RAMPAGE EXPLORATION, INC. 06363 LYDA, GERALD UNIT -C- SOMERSET RAMPAGE EXPLORATION, INC. 08106 LYDA, GERALD UNIT -D- SOMERSET RAMPAGE EXPLORATION, INC. 08291 LYDA, GERALD UNIT -E- SOMERSET RAMPAGE EXPLORATION, INC. 08458 LYDA, GERALD UNIT -F- SOMERSET RAMPAGE EXPLORATION, INC. 08459 LYDA, GERALD UNIT -G- SOMERSET RAMPAGE EXPLORATION, INC. 08626 LYDA, GERALD UNIT -W- SOMERSET RAMPAGE EXPLORATION, INC. 09505 LYDIA NIXON THREE J ENERGY, INC. 12201 LYDIA NIXON (AUSTIN CHALK, LO.) THREE J ENERGY, INC. 14451 LYNN, BEATRICE ACLETO CREEK (POTH A) TRIPLE H PRODUCTION 10518 LYNX UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17743 LYONS SOMERSET GREAT PLAINS RESOURCES, INC. 07103 LYONS -A- SOMERSET GREAT PLAINS RESOURCES, INC. 11025 LYONS -D- SOMERSET GREAT PLAINS RESOURCES, INC. 11026 LYONS, PAUL, UNIT SOMERSET 3-L DRILLING 03510 LYSSY JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 17476 LYSSY A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18003 LYSSY B EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18128 LYSSY 709 TRI BAR (OLMOS) LEWIS PETRO PROPERTIES, INC. 17407 LYSSY 720 TRI BAR (OLMOS) LEWIS PETRO PROPERTIES, INC. 17409 LYSSY-DEERING MARCELINA CREEK (BUDA) SEI OPERATING, LLC 18228 LYSSY, KENNETH FAIRFIELD GINCO OPERATING CO. 05745 LYSSY, MARY LYSSY (CARRIZO -D-) TEXSTAR DRILLING, INC. 08311 LYSSY, MARY LYSSY (2100 STRINGER) TEXSTAR DRILLING, INC. 04848 LYTLE UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17760 M & M FRANK LEASE LYTTON SPRINGS L.O. OIL & GAS, LLC 11771 M AND M CATTLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17372


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ M. E. HOLDSWORTH NELSON TRUST WILDCAT EXCO OPERATING COMPANY, LP 17837 MAALI EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15395 MACDIARMID ALLOCATION A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19727 MACDIARMID ALLOCATION B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19728 MACDIARMID ALLOCATION C EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19743 MACDIARMID ALLOCATION D EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19740 MACDIARMID ALLOCATION E EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19770 MACINTYRE, J.A. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 03731 MACINTYRE, JOHN A. LULING-BRANYON EAGLE FORD OIL CO., INC. 01124 MACKEY DARST CREEK (BUDA) GINCO OPERATING CO. 03878 MACKIN, J. TENNEY CREEK B & S OPERATING COMPANY LLC 08440 MACO DAVIS UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18600 MAD J UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18609 MADDOX, LORENE LA VERNIA XSTOR ENERGY, LLC 06280 MADDOX, W. D. LA VERNIA ALCORN RESOURCES, LLC 00886 MADDOX, W. D. -A- LA VERNIA ALCORN RESOURCES, LLC 00887 MADDOX, W. D. -B- LA VERNIA ALCORN RESOURCES, LLC 00885 MADGE SHANKLIN WILDCAT MEGAWEST ENERGY TEXAS CORP. 14973 MADISON "A" MARSHA WESTSTAR PETROLEUM CORPORATION 13735 MAGEE PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 18620 MAGNUSON, H. J. KIMBRO MCCLOSKEY, ROBERT A. 00786 MAGOULAS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17396 MAHAN EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17240 MAHAN SOMERSET RAINER ENERGY, INC. 10798 MAHAN "A" SOMERSET RAINER ENERGY, INC. 10805 MAHAN SOUTH EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16062 MAHAN SWD EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 19027 MAHAN-COLWELL EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17238 MAHAN, T. J. SOMERSET SEAGULL OPERATING CO., INC. 03442 MAHAN, T.J. -A- SOMERSET SEAGULL OPERATING CO., INC. 10884 MAHLER, E. W. FAIRFIELD DIAMOND TRADING & PIPELINE CORP 02133 MAHONEY SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14870 MAHONEY UNIT EAGLEVILLE (EAGLE FORD-1) ENERQUEST OPERATING L.L.C. 16728 MAHULA, LEE H. JONES CLEAR WATER OIL & GAS CORP. 10520 MAILAHN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17920 MAK MARTIN SA 24 EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18772 MAK MARTIN SA 25 EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18773 MAK MARTIN SA 28 EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18778 MAK MARTIN SA 29 EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18776 MAK MARTIN SA 61 EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18766 MAK MARTIN SA 62 EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18774 MAK RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16015 MAKERS EAGLEVILLE (EAGLE FORD-1) BXP OPERATING, LLC 17836 MALAER DARST CREEK (BUDA) DJ EXPLORATION, INC. 02741 MALATEK PILGRIM (AUSTIN CHALK) BYRD OPERATING COMPANY 12819 MALATEK, JOE PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 07036 MALCHER, R. W. POTH, NORTH (AUSTIN CHALK) K & R OIL INC. 05739 MALDONADO, JOSE S. FAIRFIELD MORE TEXAS OIL 06629 MALEY LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16484 MALEY UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18045 MALISH NOACK MALISH OPERATING, LLC 18847


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MALLARD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17464 MALLARD, T.B. "B" BIG FOOT BALCONES OIL CO., INC. 05648 MALONE, C., -A- SALT FLAT LUTEX OIL, LTD. 03086 MALONE, CHESTER LA VERNIA MALONE OIL PRODUCTION 06205 MALONE, CORA LULING-BRANYON AUSTIN OPERATING, LLC. 01027 MALONE, CORA SALT FLAT B. J. P. OPERATING 01470 MALONE, CORA SALT FLAT LUTEX OIL, LTD. 02936 MALONE, CORA ESTATE SALT FLAT OCCIDENTAL ENERGY COMPANY, INC. 01532 MALONE, R. W. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01515 MALTSBERGER EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15381 MALTSBERGER PEARSALL (AUSTIN CHALK) EP ENERGY E&P COMPANY, L.P. 19892 MALTSBERGER HIXON ALLOCATION A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19992 MALTSBERGER HIXON ALLOCATION B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19993 MALTSBERGER HIXON ALLOCATION C EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 20012 MALTSBERGER HIXON C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18377 MALTSBERGER HIXON E UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18859 MALTSBERGER NORTH EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19730 MALTSBERGER NORTHCUT UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17325 MALTSBERGER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18147 MALTSBERGER UNIT A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19774 MALTSBERGER UNIT A-1 EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19967 MALTSBERGER UNIT A-2 EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19776 MALTSBERGER UNIT A-3 EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19783 MALTSBERGER UNIT B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19243 MALTSBERGER UNIT C EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19251 MALTSBERGER UNIT D EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19387 MALTSBERGER UNIT E EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19734 MALTSBERGER-DB TRUST EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19718 MALVEN, CHAS. W. SOMERSET PETROSAURUS, INC. 03251 MALVERN, CHARLES SOMERSET PETROSAURUS, INC. 10869 MANDEL, ANTON -A- DARST CREEK (BUDA) CALTEX ENERGY CO. 06622 MANDUJANO, ALFONZO SOMERSET MANDUJANO, ALFONSO, JR. 11275 MANFORD RANCH-CHANDLER 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17083 MANFORD RANCH-CHANDLER 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17084 MANFORD RANCH-HENRY 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17085 MANFORD RANCH-HENRY 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17097 MANFORD, T.D. -G- SMILEY, SE (AUSTIN CHALK) ENERGETICS OPERATING COMPANY 07479 MANGO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18575 MANGOLD, H. FAIRFIELD FREEMAN, J. L., OPER. 09992 MANGROVE A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19687 MANGROVE B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19673 MANGROVE C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19707 MANGROVE D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19674 MANGUM UNIT FIRST SHOT (AUSTIN CHALK) EVERGREEN OPERATING CO., LTD. 19737 MANGUM, ET.AL. V. DESHAZO (ANACACHO) ATLAS OPERATING LLC 13686 MANION-JAGGE SOMERSET BETA OIL CORPORATION 07159 MANN PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 17957 MANN PLEASANTON, E. (ESCON FLT B5000) BRYMER CONTRACTING INCORPORATED 09873 MANN "B" PEARSALL (AUSTIN CHALK) STRATCO OPERATING CO., INC. 13270 MANN "C" PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 13060 MANN AC PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 17618


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MANN-MOPAC UNIT PLEASANTON, E. (EDWARDS) PEARL, BILL H. PRODUCTIONS, INC. 09566 MANN-NEUMANN UNIT PEARSALL (AUSTIN CHALK) FIRSTRIKE ENERGY CORPORATION 19563 MANN-SAN MIGUEL PEARSALL (AUSTIN CHALK) ROCK SOLID OPERATING, LLC 15050 MANN, ED -A- PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 05265 MANN, EDWARD STACY (OLMOS -A-) NEUMANN OIL & GAS, LLC 01697 MANNAS AND JOHNSTON -A- PEARSALL (AUSTIN CHALK) MCRAE HORIZONTAL DRILLING, INC. 04755 MANNING EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16087 MANNING UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17987 MANNING, R. V. SPILLER AUSTIN OPERATING, LLC. 03358 MAPLES, J. E. ECKERT LUCROS INTERNATIONAL CORPORATION 00546 MAR RANCH EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 19005 MARBACH SOMERSET PETROSAURUS, INC. 10819 MARBURGER PEARSALL (AUSTIN CHALK) OILFIELD EXPLORATION SWD #1 10525 MARCEE PEACH CREEK (AUSTIN CHALK) UNITED OPERATING, LLC 14924 MARCUS SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14546 MARGARET ANDERSON CARVER-KALLISON PRODUCTION RESOURCES, INC. 18846 MARGARITA PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12962 MARGUERITE PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16477 MARIA PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 12788 MARIETTA UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 17747 MARINES, L. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01081 MARK & SANDRA LORENZO (AUSTIN CHALK) SANCHEZ OIL & GAS CORPORATION 17164 MARK & SANDRA UNIT BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16060 MARK BROWN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15844 MARMION UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16877 MARMION-THORNHILL HC1 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19961 MARMION-THORNHILL HC2 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19977 MARPAT SOMERSET PRODUCTION RESOURCES, INC. 18821 MARPAT B SOMERSET PRODUCTION RESOURCES, INC. 18927 MARPAT C SOMERSET PRODUCTION RESOURCES, INC. 18928 MARPICK PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17691 MARRS MCLEAN BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15864 MARRS MCLEAN BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 17169 MARRS MCLEAN PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 16221 MARS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17724 MARSH PLEASANTON, E. (EDWARDS) R & B OIL COMPANY, LLC 14932 MARSH, WOODROW PLEASANTON, E. (BUDA) R & B OIL COMPANY, LLC 14891 MARSH, WOODROW PLEASANTON, E. (EDWARDS) PEARL, BILL H. PRODUCTIONS, INC. 08797 MARSHALL SOMERSET OIL PRODUCTION SERVICE 11231 MARSHALL, MORRIS A.W.P. (OLMOS) AWP OPERATING COMPANY 11928 MARSHALL, T. R. UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15249 MARTHA BRISCOE SWD SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 16336 MARTIN BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 09780 MARTIN -A- SOMERSET PETROSAURUS, INC. 11367 MARTIN 'A' 9 SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14751 MARTIN MAK D EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 19143 MARTIN MASON EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15356 MARTIN MASON B EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15437 MARTIN MASON UNIT D EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15420 MARTIN MASON UNIT E EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15425 MARTIN MASON UNIT K EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16434


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MARTIN MASON UNIT N EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15426 MARTIN MASON UNIT P EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17488 MARTIN MASON UNIT Q EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17802 MARTIN MASON UNIT U EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16466 MARTIN RANCH A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 15980 MARTIN RANCH B EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 15932 MARTIN RANCH C EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 19157 MARTIN TR. 2 SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14587 MARTIN TR. 4 SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14752 MARTIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15965 MARTIN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16582 MARTIN-MASON RANCH UNIT A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15510 MARTIN, B. SCOTTY (BARTOSH SAND) GREENWERKS OUTDOOR SERVICES LLC 01570 MARTIN, C. F. SOMERSET PETROSAURUS, INC. 05506 MARTIN, J. C. SUN T S H (OLMOS) FLETCHER OPERATING, LLC 18507 MARTIN, J.C. (BUFFALO) COOKE, WEST (OLMOS) FLETCHER OPERATING, LLC 05663 MARTIN, JIM LA PARITA CORE E & P CORP. 09901 MARTIN, W. R. BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 03218 MARTIN, W. R., ETAL BATEMAN R & S OIL PRODUCTION CO. 00018 MARTINDALE EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15458 MARTINDALE LOS ANGELES (3800) EXPRESS OIL CO. 13967 MARTINDALE TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 18412 MARTINDALE JARRATT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16791 MARTINDALE L & C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15967 MARTINDALE ORNDOFF UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16187 MARTINDALE STOREY TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 17976 MARTINEZ A EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19980 MARTINEZ DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15826 MARTINEZ ET AL SOMERSET PETRO LIONS, LLC 10752 MARTINEZ UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16097 MARTINEZ-NORMAN SUTIL (AUSTIN) OMNI OPERATING COMPANY(A) 13251 MARTINEZ, ADELA FAIRFIELD CALK, ROGER D. 06156 MARTINEZ, RENATO FLORESVILLE, S. (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 10683 MARY ELLEN HOLDSWORTH HOLDSWORTH (BRACERO SEG 1) INLAND OCEAN, INC. 19341 MARY ELLEN HOLDSWORTH HOLDSWORTH (ELAINE UP SEG 1) INLAND OCEAN, INC. 19123 MARY GARY EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17429 MARY MARTHA CHRISTIAN (6800) GALILEE OIL INVESTMENTS LLC 10062 MASSARO UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18586 MASSENGALE MINERVA-ROCKDALE DISSMORE RESOURCES INTL., LLC 11896 MASSEY CHILDREN PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12526 MASSEY, CARLTON PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 04823 MASSEY, CECIL TENNEY CREEK CLAY-WES CO. 08351 MASSEY, MARVIN M. JR. FAIRFIELD NAILS OPERATING COMPANY LLC 06695 MASSIE WEST-TAGG MASSIE WEST (PALUXY) MWWD OPERATOR, LLC 19974 MASTERS SOMERSET SEEKER OIL COMPANY, INCORPORATED 11261 MASUR, E.B. LULING-BRANYON EVENING OIL SERVICES, INC. 07169 MATFLOWER INVESTMENTS CO. ROCKY CREEK (ESCONDIDO) IMPERATOR OPERATING, LLC 14095 MATHIS-BRACEWELL PEARSALL (AUSTIN CHALK) HARRIS ENERGY CORP. 12614 MATKIN EZZELL SAN CAJO OIL COMPANY 00569 MATOCHA A.W.P. (OLMOS) WHITE OAK OPERATING COMPANY LLC 10316 MATOCHA A.W.P. (WALES) WHITE OAK OPERATING COMPANY LLC 12003


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MATT DAVIS, JR. BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18378 MATTECK, CARL NOACK TRACKER OIL & GAS, INC. 01294 MATTHEWS BRISCOE RANCH (EAGLEFORD) EEZ OPERATING INC. 18192 MATTHEWS DAVIS (EDWARDS 7481) JENCO PETROLEUM CORPORATION 08905 MATTHEWS INDIO TANKS (PEARSALL) FIRST ROCK, INC. 18901 MATTHEWS LITTLE TOM (SAN MIGUEL C.E.) RHD HOLDINGS, L.L.C. 18868 MATTHEWS SALT FLAT DARST CREEK OIL COMPANY 02154 MATTHEWS NORTH UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 18595 MATTHEWS SOUTH UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 18569 MATTHEWS, NED PRYOR RANCH, WEST (ELAINE) HOUSTON OIL FIELDS CO. 05598 MATTKE, ALBERT LA VERNIA THREE J ENERGY, INC. 00847 MATTKE, ALBERT -A- LA VERNIA THREE J ENERGY, INC. 10477 MATTKE, C.J. -A- MAPLE HUGHES (BURTON 1550) LAKE CHEROKEE PRODUCTION, LLC 08280 MATTKE, C.J. -B- MAPLE HUGHES (BURTON 1550) LAKE CHEROKEE PRODUCTION, LLC 10269 MATTKE, C.J. ET AL MAPLE HUGHES (BURTON 1550) LAKE CHEROKEE PRODUCTION, LLC 07672 MATULA, ROBERT DEBBY (MIRANDO UP) TEXAS SECONDARY OIL CORPORATION 06365 MATZIG, FRITZ MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 09527 MATZIG, OTTO MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 09053 MAUCH UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15455 MAUCH-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16427 MAUCH-KRUEGER UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15687 MAUCH-TOM UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15685 MAUERMAN MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 07329 MAUERMAN -A- MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 08545 MAUERMANN MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 04530 MAUERMANN -B- MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 08119 MAUND RANCH 26 UNIT BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 18210 MAUND RANCH 27 UNIT BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19421 MAVERICK PEARSALL (BUDA, S.) TRINITY OPERATING (USG), LLC 19103 MAY GIRLS EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16413 MAY HERITAGE TRUST, THE LA VERNIA 3-L DRILLING 06581 MAY-CHAPMAN EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16009 MAY, D.C. SOMERSET GREAT PLAINS RESOURCES, INC. 10919 MAY, FRANCIS LA VERNIA FALOR, ALLEN C. 06607 MAYFLOWER INVESTMENT CO. PENA CREEK (SAN MIGUEL 3RD) IMPERATOR OPERATING, LLC 04321 MAYHEW, GUY CHICON LAKE CIVRON PETROLEUM RES., LLC 02188 MAYO PEARSALL (AUSTIN CHALK) ARRCO OPERATING, LLC - 05056 MAYS LA VERNIA (AUSTIN CHALK) TEXSTAR OIL & GAS, LLC 18644 MB ADAMS GOOD LUCK (SAN MIGUEL) SPRI OIL & GAS, LLC 18284 MB KORN GOOD LUCK (SAN MIGUEL) SPRI OIL & GAS, LLC 05805 MBA UNIT BULLOH (NAVARRO) VICEROY PETROLEUM, LP 17335 MBF LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16057 MCADA EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17824 MCADAMS BULLOH (NAVARRO) DOUBLE DEUCE OPERATING 12668 MCAFEE PEARSALL (AUSTIN CHALK) CB OIL GROUP, LLC 13034 MCANELLY, JAMES W. ET UX ADAMS (BUDA) MCANELLY OIL CO. 05553 MCBRIDE, A. K. CHARLOTTE (NAVARRO) REC, LLC 03296 MCBRIDE, FLOSSIE ET AL CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 08054 MCBROOM, KERR SOMERSET MCBROOM, BETTY J. 10894 MCCAIN SOMERSET SOUTHWEST LOOP 1604, LTD. 11216 MCCAIN -A- SOMERSET SOUTHWEST LOOP 1604, LTD. 11228


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MCCAIN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16445 MCCAIN, L.W. SOMERSET GLOBAL TRAINING ACADEMY, INC. 11101 MCCAIN, L.W. -A- TRACT 3 SOMERSET PETROSAURUS, INC. 10783 MCCARLEY HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19693 MCCARLEY HC3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19667 MCCARLEY HC4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19677 MCCARLEY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16765 MCCARLEY UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16768 MCCARLEY, A. B. GOOD LUCK (SAN MIGUEL) HAMILTON, CLAY 05328 MCCARLEY, GEORGE GOOD LUCK (SAN MIGUEL) EXXCEL OPERATING COMPANY 04214 MCCARTY 'A' UNIT INDIO TANKS (PEARSALL) PETROEDGE OPERATING IV LLC 17513 MCCARTY RANCH A EAGLEVILLE (EAGLE FORD-1) PETROEDGE OPERATING IV LLC 19298 MCCARTY RANCH B EAGLEVILLE (EAGLE FORD-1) PETROEDGE OPERATING IV LLC 19315 MCCARTY RANCH C EAGLEVILLE (EAGLE FORD-1) PETROEDGE OPERATING IV LLC 19322 MCCELVEY UNIT LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16348 MCCLANAHAN SALT FLAT GREAT PLAINS RESOURCES, INC. 08781 MCCLAUGHERTY A.W.P. (OLMOS) AWP OPERATING COMPANY 08641 MCCLAUGHERTY A EF EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 16314 MCCLAUGHERTY, I. O. A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 15027 MCCLAUGHERTY, L.S. -A- A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 08405 MCCLEESE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16667 MCCLELLAN -C- MINERVA-ROCKDALE CAN'T COMPLAIN OPERATING CO. 01209 MCCLELLAN /S & T/ MINERVA-ROCKDALE CAN'T COMPLAIN OPERATING CO. 01210 MCCLENDON, LOULA BELL ELAINE, W. (SAN MIGUEL) REGENCY ENERGY, INC. 10151 MCCLURE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15641 MCCOLLUM A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16430 MCCOLLUM, A. W. -A- DUNLAP OCCIDENTAL ENERGY COMPANY, INC. 08065 MCCOMAS UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18570 MCCOMAS UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18574 MCCOMAS UNIT C EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18533 MCCOMAS UNIT D EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18530 MCCOMAS UNIT E EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18542 MCCOMB SAINT THIRTEEN (OLMOS NO. 1) L & J EXPLORATION, LLC 19038 MCCONNELL BUCHANAN RED SHELL INC 03496 MCCONNELL, AFTON M., A BUCHANAN EAGLE FORD OIL CO., INC. 00145 MCCONNELL, AFTON, -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 03588 MCCORMICK, T. Y. MINERVA-ROCKDALE SMITH, L. C. 01265 MCCORVEY BUCHANAN RESOURCE EXPL & PROD, INC. 11959 MCCORVEY -A- BUCHANAN RESOURCE EXPL & PROD, INC. 12019 MCCORVEY "C" BUCHANAN RESOURCE EXPL & PROD, INC. 13775 MCCORVEY, ALLAN BUCHANAN RESOURCE EXPL & PROD, INC. 12130 MCCORVEY, CLARENE BUCHANAN IAO ENERGY, LLC 13668 MCCOY PEARSALL (AUSTIN CHALK) CAG PETROLEUM CORP. 12571 MCCOY, JANICE PILGRIM (AUSTIN CHALK) ZANTANA RESOURCES 13434 MCCRORY, W. W. LULING-BRANYON GEOMEG ENERGY OPERATING CO., LLC 00991 MCCRORY, W. W. -B- LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 01040 MCCRURY, C.T. STAPLES AERO, INC. 11683 MCCULLOUGH SOMERSET SOUTHWEST LOOP 1604, LTD. 11230 MCCURDY, LEE BUCHANAN YNEW CORPORATION 00138 MCDANIEL FAIRFIELD PETRO LIONS, LLC 09925 MCDANIEL, H. E. PALMER (POTH-B) LT OIL LLC 05774


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MCDANIEL, H.E. PALMER (POTH SAND) LAKE CHEROKEE PRODUCTION, LLC 06084 MCDANIEL, H.E. PALMER (WILCOX) LAKE CHEROKEE PRODUCTION, LLC 06661 MCDANIEL, H.E. WARNCKE (CARRIZO) LAKE CHEROKEE PRODUCTION, LLC 06150 MCDANIEL, H.E. "B" SIESTA LAKE (BARTOSH) DAVISON, T. C. 06191 MCDONALD FAIRFIELD CALK, ROGER D. 08223 MCDONALD JOURDANTON, WEST (ESCONDIDO) WATSON ENERGY INVESTMENTS, LLC 06374 MCDONALD MARSHA GINCO OPERATING CO. 12356 MCDONALD -A- PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12905 MCDONALD/COLEMAN MARSHA DIRNETT, INC. 13727 MCDONALD, COLLIN MARSHA L.O. OIL & GAS, LLC 13716 MCDONALD, MARTIN MARSHA DIRNETT, INC. 13726 MCDONALD, MARTIN MARSHA GINCO OPERATING CO. 01173 MCDONALD, MARTIN -A- MARSHA GINCO OPERATING CO. 10596 MCDONALD, MARTIN -B- MARSHA GINCO OPERATING CO. 12407 MCDONALD, ROLAND & BRENDA SOMERSET PETRO LIONS, LLC 10765 MCDONALD, W.M. TOUCHSTONE (OLMOS -A-) OFFSPRING WELL SALVAGE 12001 MCDONOUGH UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16580 MCDONOUGH UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16583 MCDOWELL, E. T. CAMPANA, SOUTH TRIUM, LTD. 00180 MCELROY, C. E. FAIRFIELD GREAT PLAINS RESOURCES, INC. 02134 MCEVER KENS (SERPENTINE) MG EXPLORATION, INC. 11703 MCEVER KENS (SERPENTINE) R & S OIL PRODUCTION CO. 13392 MCEVER -A- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 13248 MCEVER -E- KENS (SERPENTINE) COMANCHE WELL SERVICE CORP. 10564 MCEVER, C.D. -A- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 07192 MCEVER, C.D. -B- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 07193 MCEVER,C.D. -D- KENS (SERPENTINE) THRALL OPERATING COMPANY, INC. 09068 MCFADIN HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19001 MCFADIN HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19012 MCFADIN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16518 MCFADIN UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16650 MCFADIN UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16643 MCFARLANE PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04704 MCFAULL MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 17199 MCGALL STRIPPER DALE-MCBRIDE GREAT PLAINS RESOURCES, INC. 06632 MCGARY, R. F. MINERVA-ROCKDALE ACE FIELD SERVICES, INC. 03550 MCGINTY SCHICK BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 19077 MCGINTY UNIT EAGLEVILLE (EAGLE FORD-1) ROSETTA RESOURCES OPERATING LP 18340 MCGINTY-AVERY MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04409 MCGREGOR, A. F. MINERVA-ROCKDALE C-D OIL COMPANY, INC. 03125 MCGREGOR, T. MINERVA-ROCKDALE C-D OIL COMPANY, INC. 02876 MCKEAN-MPTM LULING-BRANYON CENTEX PIPE & EQUIPMENT, INC. 10142 MCKEAN, A. J. & J. M. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01082 MCKEAN, M. MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 08403 MCKEAN,A.J. & J.M. LULING-BRANYON (1700) TEXAS PETROLEUM INVESTMENT CO. 05947 MCKEAN,A.J.&J.M. -A- /137.50AC./ LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01083 MCKEE UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16483 MCKENZIE EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15587 MCKENZIE FOLEY UNIT A MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16830 MCKENZIE FOLEY UNIT B MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16587 MCKENZIE HC1 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19326


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MCKENZIE HC10 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19287 MCKENZIE HC11 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19369 MCKENZIE HC2 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19327 MCKENZIE HC3 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19349 MCKENZIE HC4 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19328 MCKENZIE HC7 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19311 MCKENZIE HC8 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19331 MCKENZIE HC9 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19288 MCKENZIE UNIT A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15721 MCKENZIE UNIT F EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16495 MCKENZIE UNIT H EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16509 MCKENZIE UNIT I EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15950 MCKENZIE UNIT J EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15622 MCKENZIE UNIT L EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16283 MCKENZIE UNIT O EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15904 MCKENZIE-FOLEY HC1 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19324 MCKENZIE-FOLEY HC2 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19325 MCKENZIE-FOLEY HC3 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19297 MCKENZIE-FOLEY HC4 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19312 MCKENZIE-FOLEY HC5 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19313 MCKENZIE-FOLEY HC6 MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19437 MCKENZIE-HANS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18127 MCKINLEY PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17909 MCKINLEY-CARTER UNIT PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 13186 MCKINLEY, A.E. PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 13201 MCKINLEY, LELA PEARSALL (AUSTIN CHALK) KALER ENERGY CORP. 13861 MCKINLEY, LELA PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 04836 MCKINLEY, W. W. -A- PEARSALL (AUSTIN CHALK) KALER ENERGY CORP. 08756 MCKINLEY, W.W. "C" PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 11457 MCKINNEY EAGLEVILLE (EAGLE FORD-1) HUGHES, DAN A. COMPANY, L.P. 16188 MCKINNEY KENS (SERPENTINE) R & S OIL PRODUCTION CO. 10386 MCKINNEY PEARSALL (AUSTIN CHALK) AMAC ENERGY, L.L.C. 18548 MCKINNEY, C. H. & T. O. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01085 MCKNIGHT CARRIZO, S. (AUSTIN CHALK) DEMAREE, BILLIE L. 05650 MCKNIGHT -A- WINTER GARDEN (OLMOS) UHC PETROLEUM CORPORATION 05438 MCKNIGHT -B- WINTER GARDEN (OLMOS) DOUBLE EAGLE PETROLEUM CORP 05440 MCKNIGHT E. WINTER GARDEN (OLMOS) DOUBLE EAGLE PETROLEUM CORP 14161 MCKNIGHT, S.A., TRUSTEE PEARSALL (AUSTIN CHALK) ENDEAVOR NATURAL GAS, LP 07948 MCLAUGHLIN, STEVEN FAIRFIELD DRACHEN OIL COMPANY 08255 MCLEAN BRISCOE RANCH (EAGLEFORD) AGERON ENERGY, LLC 19130 MCLEAN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14877 MCLEAN-BOWMAN -A- BIG WELLS (SAN MIGUEL) UNITEX OIL & GAS, L.L.C. 04177 MCLEAN-BOWMAN -B- BIG WELLS (SAN MIGUEL) UNITEX OIL & GAS, L.L.C. 04171 MCLEAN-BOWMAN -B- BIG WELLS(SAN MIGUEL, LO., EAST) UNITEX OIL & GAS, L.L.C. 04267 MCLEAN-BOWMAN -C- GOOD LUCK (SAN MIGUEL) GARDNER OIL & GAS CO. 08368 MCLEAN-BOWMAN -D- GOOD LUCK (SAN MIGUEL) OILTON RESOURCES, INC. 08530 MCLEAN-BOWMAN "B" BIG WELLS (SAN MIGUEL) BOTASCH OPERATING, LLC 14961 MCLEAN, MARRS CHARLOTTE (NAVARRO) JM CALK OPERATING, LLC 03318 MCLEAN, MARRS H.G.L. (ELAINE SAND) THALMANN, DAVID VAC SERVICE INC 05753 MCLERRAN -B- MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 09979 MCLERRAN, GRAHAM MINERVA-ROCKDALE UBETCO, INC. 13685


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MCLERRAN, J.H. -A- MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 09904 MCMAHAN, S. F. LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 03738 MCMAHON LA VERNIA J.A.G. OIL & GAS 08026 MCMAHON, JOHN LA VERNIA J.A.G. OIL & GAS 05911 MCMAHON, JOHN "A" LA VERNIA J.A.G. OIL & GAS 06103 MCMANUS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17286 MCMANUS, D. C. AUSTIN PIERCE (AUSTIN CHALK) JET OIL PRODUCERS, INC. 04375 MCMANUS, D.C. MAG (AUSTIN CHALK) DELAWARE LAND CO. 10117 MCMILLAN HOG FARM -A- MINERVA-ROCKDALE FISHER, STANLEY NOEL 09736 MCMULLEN SWD EAGLEVILLE (EAGLE FORD-1) NGL WATERSOLUTIONS EAGLEFORD,LLC 16071 MCNEEL, W. W., JR. SPILLER DELRAY OIL, INC. 01914 MCOSKER SOMERSET EVERETT OIL, INC. 11138 MCOSKER SOMERSET GREAT PLAINS RESOURCES, INC. 10904 MCOSKER SOMERSET SEAGULL OPERATING CO., INC. 11244 MCOSKER -B- SOMERSET GREAT PLAINS RESOURCES, INC. 10905 MCOSKER -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11388 MCQUINN UNIT MINERVA-ROCKDALE RED OAK OIL COMPANY, LLC 18835 MCRAE/ORYX KIEFER-BISSETT PEARSALL (AUSTIN CHALK) WOOLDRIDGE OIL & GAS 13469 MCROREY UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18022 MCROREY UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17942 MCROREY UNIT III DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18042 MCVEA/WILSON PILGRIM (AUSTIN CHALK) FINALY RESOURCES LLC 12466 MCVOY, A. A. MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 01239 MCWILLIAMS HEIRS A BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 17799 MCWILLIAMS HEIRS A DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 15060 MCWILLIAMS-O'NEILL EF BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 19838 MCWILLIAMS-SOT-SARTAIN EF BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 19731 MCWILLIAMS, CORY PEARSALL (AUSTIN CHALK) SEAGO PETROLEUM, INC. 01309 MCWILLIAMS, GLENN TAYLOR-INA BLACK MAC OIL, INC. 06690 ME-YOU EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17947 MEAD, J. SOMERSET VARGAS OIL & GAS 08719 MEAD, MILTON O. SOMERSET PETROSAURUS, INC. 10762 MEAD, R.A. SOMERSET VARGAS OIL & GAS 10818 MEADOR, O.E. BIG FOOT OILEX INT'L INVESTMENTS, INC. 14094 MEADOWS, R.R. CROWN, E. (NAVARRO) CRYSTAL RESOURCES, INC 14052 MEAGAN FAIRFIELD PREMIER MINERALS, INC. 17671 MEDFORD LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16104 MEDFORD UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16328 MEDFORD UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16719 MEDIA LUNA UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18537 MEDINA IRR. FARMS -A- CHICON LAKE RLU OPERATING, LLC 00302 MEDINA SWD PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 13781 MEDINA UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17152 MEDLEN, R. M. BUCHANAN YNEW CORPORATION 00137 MEDLIN, R. M. BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 00146 MEEK WAITZ UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16576 MEEKS SWD FASHING (EDWARDS LIME -B-) MILESTONE ENVIRO SERVICES, LLC 18307 MEHAFFEY DIXIE (NAVARRO B) VICEROY PETROLEUM, LP 11822 MEHAFFEY GINNY JOHNSON (NAVARRO A) VICEROY PETROLEUM, LP 10388 MEHAFFEY, L.C. S GINNY JOHNSON (NAVARRO A) SELLERS LEASE SERVICE, INC. 12164 MEIER, VICTOR C CHICON LAKE DENPAC CORPORATION 02072


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MEIGS UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15946 MEINERS EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 18021 MEINERS RANCH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16119 MEINERS RANCH UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16126 MEINERS RANCH UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16473 MEINERS RANCH UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16184 MEINERS RANCH UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15997 MEISKE, ROY J. WILDCAT CUTRER ENERGY 11864 MEISKE, ROY J. NOACK CUTRER ENERGY 10503 MEISSNER LA VERNIA 3-L DRILLING 08081 MEISTER, JUDY C. LULING-BRANYON MEISTER, JUDY C. 07132 MELINDA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17600 MELLENBRUCH ALLOCATION A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19725 MELLENBRUCH ALLOCATION B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19724 MELLENBRUCH SWD LOS ANGELES (4800) PRODUCED WATER TRANSFER1 LLC 15922 MELLENBRUCH UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18655 MELLENBRUCH UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16069 MELLENBRUCH, JULIA WASHBURN, NORTH (WILCOX -M- SD.) MELLENBRUCH, JULIA 04914 MELLENCAMP UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17394 MELMS ESTATE PEARSALL (AUSTIN CHALK) BIGFOOT OIL LLC 07560 MELMS ESTATE PEARSALL (NAVARRO SAND) BIGFOOT OIL LLC 08013 MELON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17775 MELTON, W. B. TAYLOR-INA BRIAR HOLLOW ENERGY COMPANY 03413 MELTON, W. B. TAYLOR-INA KLAEGER OPERATING COMPANY, LLC 02551 MELTON, W. B. TAYLOR-INA TEHUACANA CRUDE OIL, LLC 01998 MENCHACA FAIRFIELD CALK OIL COMPANY 09765 MENCHACA FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 11939 MENCHACA FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 12596 MENCHACA FAIRFIELD MORE TEXAS OIL 12286 MENCHACA FAIRFIELD PREMIER MINERALS, INC. 17670 MENCHACA, A.G. FAIRFIELD GINCO OPERATING CO. 08740 MENDEZ UNIT SALT FLAT, WEST T. A. W. COMPANY 09518 MENDEZ, ENRIQUE KAYE (NAVARRO) JOHANSON OIL 01940 MENDOZA, LUCIANO DILLEY (AUSTIN CHALK) AMPAK OIL COMPANY 07687 MENELEY PEACH CREEK (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 12694 MENKE MINERVA-ROCKDALE RWA, LLC 16932 MENKE MINERVA-ROCKDALE 94 OPERATING, LP 07136 MENN UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17128 MENOTTI UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18171 MENOTTI UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18141 MERCER 3H UNIT LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 18712 MERCER-TABOR UNIT LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 10427 MERCER, A.-MERCER, M., UNIT NO.1 LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03619 MERCER, ALF LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01086 MERCER, F. M. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01087 MERCER, MATTIE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01088 MERCER, MILLS LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01089 MERCER, W. F. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01090 MERCER, W. M. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01091 MERCER, W.F. 2H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14595 MERCER, WILLIAM P. UNIT MAG (AUSTIN CHALK) LACY 03, LLC 05411


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MERCER,W.F.-MERCER,W.M., UNIT#1 LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03620 MERCIER EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16131 MERCIER-CARAWAY 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17613 MERCIER-CARAWAY2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17064 MERCIER-HENRY 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17162 MERCIER-HENRY 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17032 MERCURY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18225 MERCURY 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18914 MERCURY 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18919 MERGANSER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17984 MERIDETH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18909 MERIT-RVS OIL UNIT PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 13211 MERIWETHER, HENNIE ETAL SALT FLAT (EDWARDS) L. S. K. L. OIL CO. 13980 MERIWETHER, HENNIE, ETAL SALT FLAT L. S. K. L. OIL CO. 01491 MERKA LARREMORE BENCHMARK TEXAS PETROLEUM, LLC. 18687 MERLIN EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18007 MERRITT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15451 MERRITT SOUTH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15618 MERRIWEATHER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 19564 MERRIWEATHER, JOHN LULING-BRANYON E & W OIL, INC. 01032 MERRIWEATHER, M. SALT FLAT B. J. P. OPERATING 01471 MERRIWETHER SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15682 MERRIWETHER SOUTH SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 16127 MERRIWETHER, M. SALT FLAT LUTEX OIL, LTD. 01504 MESQUITE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16288 MET A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19464 MET B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19497 MET C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19498 METEOR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18578 METZGER, H.L. MONKSFIELD (350 SAND) SORTO, PETERS GOD 09643 METZLER LULING-BRANYON GREAT PLAINS RESOURCES, INC. 08524 METZLER, JACK LULING-BRANYON BLACKMAR, JIM OIL OPERATOR 19399 MEYER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15549 MEYER-B- TAYLOR-INA PARK AVENUE RESOURCES, INC. 08380 MGS UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18762 MH PLEASANTON SWD IMOGENE, EAST (EDWARDS LIME) TRU-RESOURCES, LLC 17124 MICHAEL KOEPP LA VERNIA PRODUCTION RESOURCES, INC. 19411 MICHAEL WHEELER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17502 MIDDLE MCCOWEN EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15638 MIDDLETON PETROLEUM TAYLOR-INA TEHUACANA CRUDE OIL, LLC 03335 MIDDLETON PETROLEUM A TAYLOR-INA TEHUACANA CRUDE OIL, LLC 14219 MIDDLETON PETROLEUM B TAYLOR-INA TEHUACANA CRUDE OIL, LLC 14220 MIDDLETON-SACHS A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17144 MIDWAY ELAINE (SAN MIGUEL) LANE, LLOYD L. 14195 MIEARS -F- DALE-MCBRIDE MEB, LLC 11667 MIEARS, A. J. BUCHANAN YNEW CORPORATION 00151 MIERS, W. L. -B- JACK FLASH (ELLENBURGER) HENRY PETROLEUM LLC 14314 MIESCH - ST. KATRINA NINE YEAR (GEORGETOWN) STONEGATE OPERATORS, INC. 13937 MIESCH A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18397 MIESCH B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18386 MIGL SOMERSET MORE TEXAS OIL 10910


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MIKE VEGA UNIT BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19619 MILDRED UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18075 MILES ADDITION UNIT SALT FLAT OFFSPRING WELL SALVAGE 03060 MILLER BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 17899 MILLER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16312 MILLER FAIRFIELD LONGSHOT ENERGY LLC 18872 MILLER SASPAMCO P.S.N. PETROLEUM, INC. 13532 MILLER SOMERSET FIVE STAR OPERATING COMPANY 04028 MILLER A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17411 MILLER B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17657 MILLER BROS -B- JOURDANTON (RECKLAW) BRYMER CONTRACTING INCORPORATED 10380 MILLER BROS -B- JOURDANTON (RECKLAW) LISSNER, LINDY 09391 MILLER BROS. JOURDANTON (RECKLAW) MAZCO ENERGY LLC 08595 MILLER C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18224 MILLER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16997 MILLER UNIT JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 17529 MILLER UNIT NO. 2 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17510 MILLER UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19231 MILLER-DRINKARD PEARSALL (AUSTIN CHALK) WCS OIL & GAS CORPORATION 12802 MILLER-WAGNER "121-A" CROSS "S" RANCH (SAN MIGUEL) FLEUR-DAVID 13310 MILLER-WAGNER 121 ELAINE, N. (5250) FLEUR-DAVID 12622 MILLER, CECIL SOMERSET GREAT PLAINS RESOURCES, INC. 11147 MILLER, D. FAIRFIELD CALK OIL COMPANY 11361 MILLER, J. SOUTHTON SECOND CHANCE 10019 MILLER, M. SOMERSET GREAT PLAINS RESOURCES, INC. 01636 MILLER, RAND DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 03850 MILLER, RAND DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02753 MILLER, RAND DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 06323 MILLER, RAND -42- DARST CREEK (BUDA) E. T. OIL COMPANY 07889 MILLER, RAND TRACT 1 DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 02717 MILLER, RAND TRACT 2 DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 02718 MILLER, RAND TRACT 3 DARST CREEK (BUDA) GARRISON LTD. 02719 MILLER, RAND TRACT 4 DARST CREEK (BUDA) E. T. OIL COMPANY 13820 MILLETT A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18713 MILLETT B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18669 MILLETT C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19051 MILLS PANDORA, NW (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 12647 MILLS PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 17780 MILLS OIL UNIT PILGRIM (AUSTIN CHALK) DOMINION PRODUCTION COMPANY, LLC 15114 MILLS UNIT PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 13681 MILLS-WOOD UNIT PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 17511 MILLS, E.C. HASSE (BUDA) ROBERTS & HAMMACK INC. 10231 MILLS, J. C. PEARSALL (AUSTIN CHALK) STRATCO OPERATING CO., INC. 04669 MILLS, J. C. -A- PEARSALL (AUSTIN CHALK) MOODY OIL CO. 04613 MILLS, J. T. KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 00774 MILLS, L. H. KAYE (NAVARRO) PRODUCTION RESOURCES, INC. 00772 MILLS, MARY ALICE PEARSALL (AUSTIN CHALK) THALMANN, DAVID VAC SERVICE INC 12416 MILTON HINES PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 16179 MILWARD, BYRON FAIRFIELD CALK, ROGER D. 07806 MINIX, K.W. FAIRFIELD K. V. D. OIL COMPANY 01838 MINOTEX/BENKE -B- CHARLOTTE, WEST MINERAL RESOURCES, INCORPORATED 13642


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------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MINOTEX/BENKE 'A' CHARLOTTE, WEST MINERAL RESOURCES, INCORPORATED 00294 MIRELES, JESUS SOMERSET PETROSAURUS, INC. 10858 MIRELES, JOHNNIE MINERVA-ROCKDALE PRICE OPERATING, LLC 02996 MISS LAUREN WILDCAT SATURN RESOURCES, LLC 19438 MITCHELL WILDCAT VISION OIL AND GAS LLC 19485 MITCHELL SOMERSET SEAGULL OPERATING CO., INC. 03547 MITCHELL TENNEY CREEK B & S OPERATING COMPANY LLC 08521 MITCHELL "C" SOMERSET SEAGULL OPERATING CO., INC. 11137 MITCHELL "87" WILDCAT MEGAWEST ENERGY TEXAS CORP. 14982 MITCHELL B SOMERSET K.A. BARNES OIL & GAS OPER, LLC 15860 MITCHELL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15576 MITCHELL/QUINNEY UNIT STOCKDALE (CARRIZO) GREENWERKS OUTDOOR SERVICES LLC 14307 MITCHELL, BILLY SOMERSET PETROSAURUS, INC. 11294 MITCHELL, J. C. TENNEY CREEK GREAT PLAINS RESOURCES, INC. 03650 MIURA EAGLEVILLE (EAGLE FORD-1) ALMS ENERGY, LLC 18016 MKS SWD BRISCOE RANCH (EAGLEFORD) MKS SERVICES, LLC 18249 MKS SWD PEARSALL (AUSTIN CHALK) MKS SERVICES, LLC 17290 MMH WILDCAT CUTRER ENERGY 11863 MOBIL WHEELER A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 12309 MOBILE MINERALS ESTATE PEARSALL (AUSTIN CHALK) SINGLETON, W. 09545 MOCKINGBIRD MOCKINGBIRD (H2S DISPOSAL) MOCKINGBIRD MDSTRM GAS SVCS, LLC 18093 MOCZYGEMBA EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15462 MOCZYGEMBA LYSSY (CARRIZO -D-) REXCOM, INC. 14060 MOCZYGEMBA A-436 EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16550 MOCZYGEMBA B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16705 MOCZYGEMBA, C. MARCELINA CREEK (AUSTIN CHALK) PONTIAC OIL, INC. 08020 MOEBIUS, F. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01728 MOEHNKE, CARL NOACK BLACK JACK SERVICES, L.L.C. 13997 MOEHRING MINERVA-ROCKDALE CHISHOLM OIL INVESTMENTS 10369 MOESKER EAGLEVILLE (EAGLE FORD-1) BXP OPERATING, LLC 16693 MOLAK PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15111 MOLNOSKEY, JOE PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 12057 MONARCH TENNEY CREEK CASTILLO OIL COMPANY LLC 11598 MONTAGUE CATTLE CO. CHEROKEE (AUSTIN CHALK, LO.) UNITED PRODUCTION CO., INC. 04499 MONTAGUE CATTLE CO. CHEROKEE (NAVARRO) SAN DIA PRODUCING COMPANY 04461 MONTAGUE CATTLE CO. CHEROKEE (NAVARRO, LO.) SAN DIA PRODUCING COMPANY 08370 MONTE LENOSO BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 19738 MONTE LENOSO FRO BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15623 MONTE LENOSO FRO C BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19736 MONTEITH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16753 MONTEMAYOR BRISCOE RANCH (EAGLEFORD) REDEMPTION OIL & GAS, LLC 15377 MONTEMAYOR PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17757 MONTEZ-DRYDEN CHICON LAKE RLU OIL & GAS, INC. 05644 MONTGOMERY UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16671 MONTGOMERY, DUDLEY ACLETO CREEK (POTH B) LA VERNIA OIL 10472 MONTGOMERY, DUDLEY NIXON OILTON RESOURCES, INC. 13589 MONTGOMERY, E. F. ACLETO CREEK (POTH A) ATTIS OPERATING I INC. 10210 MONTGOMERY, E. F. SCOTTY (BARTOSH SAND) ALCOR ENERGY, INC. 10010 MONTGOMERY, E. F. -A- ACLETO CREEK (POTH SAND) LORENZ & BOSANKO 00005 MONTGOMERY,VALERIE LA VERNIA ENERGON3 03379 MONTSANKO NIXON ATTIS OPERATING I INC. 12318


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------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MOODY RANCH MINERVA-ROCKDALE 12013 OIL TEXAS, LLC 19588 MOODY, IVIE MINERVA-ROCKDALE EXCALIBUR E & P, LLC 01258 MOON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18226 MOONEY, ISAAC DUNLAP BLACKMAR, JIM OIL OPERATOR 06388 MOONLIGHT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17892 MOORE MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 01222 MOORE 2 NIXON THOMAS, MIKE 13291 MOORE, CHALMERS LA VERNIA DONOCO OIL COMPANY 09018 MOORE, J. -A- DALE-MCBRIDE HAZELETT OIL, INC. 11643 MOORE, JEFF DALE-MCBRIDE HAZELETT OIL, INC. 04100 MOORE, JEFF DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 11446 MOORE, MAGGIE LULING-BRANYON RODESSA OPERATING COMPANY 01033 MOORE, MAGGIE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01092 MOORE, MARLIN LULING-BRANYON GINCO OPERATING CO. 03912 MOORE, MARLIN LULING-BRANYON RED SHELL INC 00984 MOORE, MARLIN -C- LULING-BRANYON RED SHELL INC 03464 MOORE, MARLIN W. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 00999 MOORE, MARLIN W. -A- LULING-BRANYON RED SHELL INC 00985 MOORE, MARLIN W. -B- LULING-BRANYON RED SHELL INC 02569 MOORE, MARLIN W. -F- LULING-BRANYON RED SHELL INC 03520 MOORE, O. T. DALE-MCBRIDE HAZELETT OIL, INC. 04101 MOORE, R.V. PEARSALL (AUSTIN CHALK) COX & COX PRODUCTION CO. 13319 MOORE, S. H. BUCHANAN GREAT PLAINS RESOURCES, INC. 02139 MOORE, W. D. DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 04108 MOOS UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18186 MOOS UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18242 MOOS-BOULDIN TRUST (AW1) EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18158 MOOS-BOULDIN TRUST (AW2) EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18194 MOOS-COOK EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16631 MOOSE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17150 MORA BEAR CREEK BENCHMARK TEXAS PETROLEUM, LLC. 17557 MORALES RANCH PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 13811 MORALES-TURNHAM UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14513 MORALES, FELIX H. A.W.P. (OLMOS) XTO ENERGY INC. 08006 MORALES, FRED PEARSALL (NAVARRO SAND) BLACKBRUSH O & G, LLC 14269 MORALES, PEDRO PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 04872 MORALES, PEDRO PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 14665 MORELAND PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15088 MORENO SALT FLAT, WEST KIDD PRODUCTION CO. 08835 MORGAN SOMERSET GREAT PLAINS RESOURCES, INC. 11194 MORGAN-EGGERS UNIT CHEROKEE (NACATOCH) BETRO, INC. 06245 MORGAN-KNIGHT UNIT CHEROKEE (AUSTIN CHALK, LO.) ERNEST OPERATING COMPANY 05767 MORGAN, MARY MILANO (PECAN GAP) VICEROY PETROLEUM, LP 09081 MORGAN, T. ET AL A.W.P. (OLMOS) XTO ENERGY INC. 08934 MORIN, LEOPOLDO PEARSALL (AUSTIN CHALK) CENTEX DEVELOPMENT 12838 MORO CREEK BRISCOE RANCH (EAGLEFORD) PROTEGE ENERGY III LLC 15370 MORO CREEK PSA 2 BRISCOE RANCH (EAGLEFORD) PROTEGE ENERGY III LLC 18108 MORO CREEK PSA 3 BRISCOE RANCH (EAGLEFORD) PROTEGE ENERGY III LLC 18109 MORO CREEK RANCH CATCLAW (OLMOS) MCR OPERATING GROUP 08707 MORRILL BBJ, N. (WILCOX 5700) OMEGA ENERGY, LLC 15067 MORRILL GAS-X, N. (WALES) PETROTX OPERATING, LLC 14538


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MORRILL GAS-X, SHALLOW (CARRIZO) PETROTX OPERATING, LLC 14781 MORRILL RANCH EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16035 MORRILL RANCH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18761 MORRILL UNIT E EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 18290 MORRILL UNIT G EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 18567 MORRILL UNIT H EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 19518 MORRILL UNIT I EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 19544 MORRIS EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17459 MORRIS NIXON ATTIS OPERATING I INC. 12568 MORRIS -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11214 MORRIS -C- SOMERSET TEXAS SECONDARY OIL CORPORATION 11763 MORRIS -D- SOMERSET CRYSTAL RESOURCES, INC 11440 MORRIS -D- SOMERSET PAISANO PRODUCTION, INC. 11027 MORRIS "C" SOMERSET SEEKER OIL COMPANY, INCORPORATED 12736 MORRIS TRUST PEARSALL (AUSTIN CHALK) STRATCO OPERATING CO., INC. 12704 MORRIS-MAHAN EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17645 MORRIS, BEULAH SOMERSET GREAT PLAINS RESOURCES, INC. 10508 MORRIS, BEULAH -A- SOMERSET SEEKER OIL COMPANY, INCORPORATED 11933 MORRIS, BEULAH -B- SOMERSET SEEKER OIL COMPANY, INCORPORATED 12154 MORRIS, C.A. LA VERNIA PRODUCTION RESOURCES, INC. 06158 MORRISON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18019 MORROW PEARSALL (AUSTIN CHALK) D. AND Y. YUNK PRODUCTIONS 12789 MORROW, T. C. PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 04733 MOSES SALT FLAT AUSTIN OPERATING, LLC. 01472 MOSES & BAGGETT SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 14055 MOSES & BAGGETT -A- SALT FLAT B-3 OIL CO. 01483 MOSES & BAGGETT -B- SALT FLAT B-3 OIL CO. 01484 MOSES -A- SALT FLAT PRIORITY OIL COMPANY LLC 03333 MOSES AND BAGGETT -A- SALT FLAT RUJO 01448 MOSES BAGGETT 'A' SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 17197 MOSES-WATSON SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15871 MOSES, BONNIE SALT FLAT B-3 OIL CO. 03672 MOSES, C.V. SALT FLAT CASTILLO OIL COMPANY LLC 11625 MOSES, E. I. SALT FLAT B-3 OIL CO. 01505 MOSES, I. E. -A- SALT FLAT OILTEX, LLC 01452 MOSES, I. E.-MATTHEWS SALT FLAT DARST CREEK OIL COMPANY 02195 MOSES, WILLIE "A" SALT FLAT (EDWARDS) PRIORITY OIL COMPANY LLC 13981 MOSIER, A. T. SALT FLAT EMBASSY WELL SERVICE, LLC 05966 MOSS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17723 MOSTYN EAGLEVILLE (EAGLE FORD-1) MODERN EXPLORATION, INC. 15273 MOSTYN SANER RANCH (SAN MIGUEL) PETROSAND ENERGY, INC. 15199 MOTEN GIDDINGS (AUSTIN CHALK-1) BYNG ENERGY GROUP, INC. 10290 MOURSUND UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17817 MOY EAGLEVILLE (EAGLE FORD-1) SEGURO WELL SERVICE, INC. 15487 MOY, R.F. SUTIL (AUSTIN) SEGURO WELL SERVICE, INC. 17430 MOY, R.F. SUTIL (REEF) SEGURO WELL SERVICE, INC. 06196 MUDD UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16825 MUECK, LAWRENCE MINERVA-ROCKDALE CARBONIT EXPLORATION, INC. 06788 MUELLER, FRITZ LA VERNIA TRANSIERRA EXPLORATION CORP. 00946 MUELLER, HULDA, ETAL GAS RIDGE R.D. OIL COMPANY 00641 MUENCHOW, A.E. LA VERNIA MIDSTATES CORPORATION 07414


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MUENZLER MAG (AUSTIN CHALK) FIRST ROCK, INC. 09601 MUIL, CHARLES MUIL (CARRIZO SAND) JJRS INVESTMENTS INC. 01276 MUIL, CHAS. MUIL (QUEEN CITY SAND) JJRS INVESTMENTS INC. 01280 MUIR, JOHN UNIT NIXON NEWSTAR OIL & GAS COMPANY, INC. 13846 MULLENS SOMERSET BRANDER, SAM H. 11597 MULLENS SOMERSET GREAT PLAINS RESOURCES, INC. 11028 MULLENS "GMK" SOMERSET GREAT PLAINS RESOURCES, INC. 11467 MULLINS -C- BEAR CREEK CAL OIL COMPANY 10255 MUMME PARTNERS UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16291 MUMME RANCH EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15385 MUMME RANCH ALLOCATION A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19752 MUMME RANCH ALLOCATION B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19662 MUMME RANCH ALLOCATION C EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19685 MUMME RANCH ALLOCATION F EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19909 MUMME RANCH ALLOCATION G EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19911 MUMME-CEARLEY B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15991 MUMME-CEARLEY UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16033 MUMME-LA SALLE UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17145 MUMME-REED UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17146 MUMME-TCU UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16479 MUNGER, MILDRED FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 02010 MUNK & SAN ANTONIO COTTON MILL SOUTHTON SOUTHWEST BAILER PUMP CO. 01666 MUNOZ SOMERSET GREAT PLAINS RESOURCES, INC. 07439 MUNOZ, FAUSTINO CROWN, E. (NAVARRO) BAYSHORE OPERATING CORP., L.L.C. 14990 MUNSON RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15489 MURIEL UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17235 MURPHY GOTEBO KID (ANACACHO-SERPENTINE) PROPERTY DEVELOPMENT GROUP, INC. 14017 MURPHY FAMILY CHEROKEE (EAGLE FORD) CIMROD, LLC 18041 MURPHY RANCH GOTEBO KID (ANACACHO-SERPENTINE) RHD HOLDINGS, L.L.C. 14024 MURPHY UNIT I MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16305 MURPHY UNIT II MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16319 MURRAY EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 16666 MURRAY -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11031 MURRAY -C- SOMERSET FIVE STAR OPERATING COMPANY 11032 MURRY SOMERSET GREAT PLAINS RESOURCES, INC. 11029 MUSKOX EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17242 MUSSER, W.M. JR. FAIRFIELD GREAT PLAINS RESOURCES, INC. 07620 MUSTANG EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16408 MUSTANG RANCH BRISCOE RANCH (EAGLEFORD) BPX OPERATING COMPANY 15266 MUSTANG RANCH PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19364 MUSTANG RANCH C BRISCOE RANCH (EAGLEFORD) BPX OPERATING COMPANY 15267 MUSTANG 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18722 MUSTANG 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18726 MUTZ SWD DICKE (WALES SAND) NGL WATERSOLUTIONS EAGLEFORD,LLC 18168 MYERS PENA CREEK (SAN MIGUEL 2ND) FLINT OAK ENERGY, LLC 14608 MYERS, M. SOMERSET SALADO OIL CO. 10777 MYRTA PEARSALL (AUSTIN CHALK) STEPHENS PRODUCTION COMPANY 19446 MYRTA PEARSALL (BUDA, S.) AGERON ENERGY, LLC 19370 MYRTIS EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17779 MYRTLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16949 N BAUERLE A UNIT BRISCOE RANCH (EAGLEFORD) AGERON ENERGY, LLC 19512


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ N BAUERLE UNIT BRISCOE RANCH (EAGLEFORD) AGERON ENERGY, LLC 18905 NADEN UNIT CROWN, E. (NAVARRO) BAYLOR OPERATING, LLC 16081 NAEGELI BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15323 NAEGELI HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19571 NAEGELI HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19635 NAEGELI HC3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19636 NAEGELIN SOMERSET 338 OIL & GAS, INC. 05257 NAEGELIN, JOHN E. FAIRFIELD CALK, ROGER D. 07256 NAEGELIN, JOHN JR. SOMERSET CALK OIL COMPANY 11102 NAGEL, MILDRED ET AL UNIT PEACH CREEK (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 10604 NANCE UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 14174 NANCE, O. N. PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 15154 NANCY FAIRFIELD PREMIER MINERALS, INC. 17672 NANCY SATURN (NAVARRO) DIAMOND M DRLG & EXPL CO. 18674 NANCY EDMUND - ET A PSA EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 19937 NANCY EDMUND UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16218 NANCY EDMUND-ET B PSA EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 19936 NANCY EDMUND-ET C PSA EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 19947 NATAL UNIT FAIRFIELD PETRO LIONS, LLC 08017 NATALIE SWD CARRIZO, S. (OLMOS 2400) BOSQUE DISPOSAL SYSTEMS, LLC 15697 NAVARRO UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15969 NAVARRO UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15979 NAYLOR JONES UNIT 85 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16570 NAYLOR JONES A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15340 NAYLOR JONES B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16819 NAYLOR JONES C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17528 NAYLOR JONES D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18741 NAYLOR JONES E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18723 NAYLOR JONES F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18747 NAYLOR JONES UNIT 10 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17595 NAYLOR JONES UNIT 100 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18289 NAYLOR JONES UNIT 102 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18461 NAYLOR JONES UNIT 103 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18214 NAYLOR JONES UNIT 105 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15692 NAYLOR JONES UNIT 106 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17303 NAYLOR JONES UNIT 107 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17309 NAYLOR JONES UNIT 11 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18414 NAYLOR JONES UNIT 12 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18420 NAYLOR JONES UNIT 121 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17541 NAYLOR JONES UNIT 127 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17735 NAYLOR JONES UNIT 13 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18415 NAYLOR JONES UNIT 14 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18217 NAYLOR JONES UNIT 141 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16871 NAYLOR JONES UNIT 145 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17370 NAYLOR JONES UNIT 15 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18223 NAYLOR JONES UNIT 151 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18744 NAYLOR JONES UNIT 155 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16724 NAYLOR JONES UNIT 159 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18725 NAYLOR JONES UNIT 16 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18085 NAYLOR JONES UNIT 169 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17516 NAYLOR JONES UNIT 17 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18151


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ NAYLOR JONES UNIT 17 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18701 NAYLOR JONES UNIT 177 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18159 NAYLOR JONES UNIT 18 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18236 NAYLOR JONES UNIT 183 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17383 NAYLOR JONES UNIT 185 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18028 NAYLOR JONES UNIT 19 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18455 NAYLOR JONES UNIT 2 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18413 NAYLOR JONES UNIT 205 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17822 NAYLOR JONES UNIT 21 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18510 NAYLOR JONES UNIT 21 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18511 NAYLOR JONES UNIT 24 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18434 NAYLOR JONES UNIT 26 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18486 NAYLOR JONES UNIT 28 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18662 NAYLOR JONES UNIT 29 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18485 NAYLOR JONES UNIT 3 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18215 NAYLOR JONES UNIT 30 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18454 NAYLOR JONES UNIT 31 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18668 NAYLOR JONES UNIT 32 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18808 NAYLOR JONES UNIT 33 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18456 NAYLOR JONES UNIT 33 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18457 NAYLOR JONES UNIT 34 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18465 NAYLOR JONES UNIT 34 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18299 NAYLOR JONES UNIT 35 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18458 NAYLOR JONES UNIT 35 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18469 NAYLOR JONES UNIT 36 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18234 NAYLOR JONES UNIT 37 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18466 NAYLOR JONES UNIT 38 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18576 NAYLOR JONES UNIT 39 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18331 NAYLOR JONES UNIT 40 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18266 NAYLOR JONES UNIT 42 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17301 NAYLOR JONES UNIT 43 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15795 NAYLOR JONES UNIT 43 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17539 NAYLOR JONES UNIT 44 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16952 NAYLOR JONES UNIT 44 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17322 NAYLOR JONES UNIT 46 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17941 NAYLOR JONES UNIT 48 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16497 NAYLOR JONES UNIT 48W EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16499 NAYLOR JONES UNIT 49 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18338 NAYLOR JONES UNIT 5 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18330 NAYLOR JONES UNIT 5 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18320 NAYLOR JONES UNIT 50 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18029 NAYLOR JONES UNIT 51 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17773 NAYLOR JONES UNIT 52 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18632 NAYLOR JONES UNIT 53 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18467 NAYLOR JONES UNIT 54 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18110 NAYLOR JONES UNIT 55 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18076 NAYLOR JONES UNIT 56 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17774 NAYLOR JONES UNIT 57 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18043 NAYLOR JONES UNIT 58 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18116 NAYLOR JONES UNIT 59 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16387 NAYLOR JONES UNIT 59 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16410


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ NAYLOR JONES UNIT 6 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18419 NAYLOR JONES UNIT 60 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16766 NAYLOR JONES UNIT 61 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17765 NAYLOR JONES UNIT 63 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16158 NAYLOR JONES UNIT 68 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17964 NAYLOR JONES UNIT 69 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18409 NAYLOR JONES UNIT 7 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17970 NAYLOR JONES UNIT 7 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18706 NAYLOR JONES UNIT 70 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16709 NAYLOR JONES UNIT 71 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17907 NAYLOR JONES UNIT 72 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18209 NAYLOR JONES UNIT 78 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18252 NAYLOR JONES UNIT 79 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18258 NAYLOR JONES UNIT 8 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18435 NAYLOR JONES UNIT 8 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18011 NAYLOR JONES UNIT 80 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18685 NAYLOR JONES UNIT 81 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18718 NAYLOR JONES UNIT 84 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17400 NAYLOR JONES UNIT 86 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15741 NAYLOR JONES UNIT 87 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18176 NAYLOR JONES UNIT 88 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18246 NAYLOR JONES UNIT 9 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17526 NAYLOR JONES UNIT 91 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17418 NAYLOR JONES UNIT 92 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17829 NAYLOR JONES UNIT 93 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18124 NAYLOR JONES UNIT 94 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18335 NAYLOR JONES UNIT 95 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15342 NAYLOR JONES UNIT 96 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15477 NAYLOR JONES UNIT 98 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15586 NAYLOR JONES UNIT 99 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15478 NEAL PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12970 NEAL PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12781 NEAL PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17979 NEAL TRUST UNIT PEARSALL (AUSTIN CHALK) OGOG OPERATING, LLC 17593 NEAL UNIT PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 17431 NECHES UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18602 NEEDMORE NEEDMORE (OLMOS) PLO'S OIL & GAS 05850 NEETS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17402 NEIHAUS-ISAACS MINERVA-ROCKDALE CAP OPERATING INC. 01252 NELIUS, J. BUCHANAN MEB, LLC 13336 NELL, EMMA PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13629 NELSON MINERVA-ROCKDALE RAYMOND, WM. C. 18823 NELSON PEACH CREEK (AUSTIN CHALK) FORD, DON H. & ASSOC. 15392 NELSON -C- PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 12353 NELSON "A" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13609 NELSON UNIT A BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 18877 NELSON ZELLA EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16189 NELSON-DOEGE, FRANK LA VERNIA DOEGE, DONALD 07214 NELSON-FIELDER BUCHANAN FOYORO ENERGY, LLC 09891 NELSON, COURTNEY, ET AL WILDCAT ENDURO OIL COMPANY INC. 12241 NELSON, STANLEY DUNLAP BAIR'S LEASE SERVICE, INC. 08226


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ NEMEC TOM TOM (GEORGETOWN) BRITNIC OIL & GAS, INC. 17620 NENTWICH, HENRY FAIRFIELD GINCO OPERATING CO. 06809 NENTWICH, J. FAIRFIELD SIMCO OIL, LLC 10675 NENTWICH, JOSEPH H. FAIRFIELD SIMCO OIL, LLC 09622 NEPTUNE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18238 NET UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17764 NET-BROS A PSA EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 20011 NET-BROS B PSA EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 19981 NEUBAUER-STANUSH LA VERNIA, WEST (AUSTIN CHALK) ATTIS OPERATING I INC. 14270 NEUMAN BROTHERS, ET AL BEAR CREEK SCHAFER OIL CO., INC. 12295 NEUMAN, CLARA T. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01900 NEUMANN TOUCHSTONE (OLMOS -A-) BAYLOR OPERATING, LLC 15208 NEUMANN, OTILLIE BIG FOOT NEUMANN OIL COMPANY 00112 NEUMANN, V. H. TAYLOR-INA PRODUCTION RESOURCES, INC. 01865 NEUMANN, V. H. -B- TAYLOR-INA PRODUCTION RESOURCES, INC. 01959 NEUSE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18024 NEUSE UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16075 NEVELS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17356 NEW WITTMAN PEARSALL (AUSTIN CHALK) RCLJ CONSTRUCTION, INC. 12731 NEW, J. L. SALT FLAT PETROSAURUS, INC. 05002 NEW, J. L. ET AL SALT FLAT IRON ORCHARD OPERATING LLC 01523 NEW, J. W. ETAL SALT FLAT R & S OIL PRODUCTION CO. 05436 NEW, J.W. SALT FLAT B H & C OPERATING COMPANY, INC. 07381 NEW, MOLLIE SALT FLAT PETROSAURUS, INC. 09348 NEW, W. H. SALT FLAT GAUGE OIL COMPANY 01467 NEWMAN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15460 NEWMAN EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 17241 NEWMAN -A- SOMERSET SEAGULL OPERATING CO., INC. 10886 NEWMAN BROWN TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18641 NEWMAN, C. SOMERSET SEAGULL OPERATING CO., INC. 10882 NEWMAN, LEE R. CHICON LAKE 3B RANCH 03772 NEWSOM PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12980 NEWSOM PEARSALL (AUSTIN CHALK) SN OPERATING, LLC 17225 NEWSOM PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 16688 NEWSOM "A" PEARSALL (AUSTIN CHALK) EXPRESS OIL CO. 13078 NEWSOM "B" PEARSALL (AUSTIN CHALK) CONWAY ENERGY OPER SERVICES INC. 13196 NEWSOM-RIGGAN PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12994 NEWSOM-RIGGAN "A" PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 13256 NEWTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17482 NEWTON, W. R. CHEROKEE (NAVARRO) MICRO OPERATING, INC. 05402 NEWTONVILLE EAST UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 16586 NEWTONVILLE NORTH UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 16538 NEWTONVILLE UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 15646 NGL COTULLA #2 SWD EAGLEVILLE (EAGLE FORD-1) NGL WATERSOLUTIONS EAGLEFORD,LLC 18046 NHL BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15553 NIBLING EAST UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18296 NIBLING WEST UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18407 NICHOLAS, MARY NAT PEARSALL (AUSTIN CHALK) W.G. INVESTMENT 08913 NICHOLS A.W.P. (OLMOS) SBOG, LLC 18866 NICHOLS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15573 NICHOLS -B- SOMERSET GREAT PLAINS RESOURCES, INC. 10782


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ NICHOLS AWP A.W.P. (OLMOS) AWP OPERATING COMPANY 16003 NICHOLS STATE UNIT A.W.P. (OLMOS) SBOG, LLC 17769 NICHOLS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17436 NICHOLS-THOMPSON C.J.P. (REEF) PRESSLY OIL INTEREST, INC. 09055 NICHOLS, G. ACLETO CREEK (POTH SAND) P.S.N. PETROLEUM, INC. 09319 NICHOLS, LUCY SOMERSET GREAT PLAINS RESOURCES, INC. 10874 NICHOLS, LUCY SOMERSET PETROSAURUS, INC. 10856 NICHOLS, LUCY -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10875 NICHOLSON PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 15876 NICOSON 68 WILDCAT APACHE CORPORATION 15161 NIESTROY EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15640 NIESTROY - JENDRUSCH 2 EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 19511 NILGAI UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17823 NINA UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18074 NITE SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 07734 NIXON FAIRFIELD CALK, ROGER D. 09389 NIXON NIXON EVX MIDSTREAM PARTNERS II LLC 16751 NIXON SUTTON (NAVARRO SAND) WSM 06768 NIXON & DILLARD -E- FAIR RAY WOOLDRIDGE OIL & GAS 09082 NIXON -4- PEACH CREEK (AUSTIN CHALK) GALILEE OIL INVESTMENTS LLC 08539 NIXON SWD NIXON TRINITY ENVIRO SWD I, L.L.C. 16998 NIXON-DILLARD WILDCAT TRISTAR OIL & GAS 13993 NIXON-DILLARD CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 10075 NIXON-DILLARD PRUITT, S. (ESCONDIDO) MG EXPLORATION, INC. 09209 NIXON, B. K. -B- CHARLOTTE (NAVARRO) REC, LLC 03301 NNJ COHO A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19826 NNJ COHO B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19846 NNJ COHO C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19847 NNJ COHO D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19848 NOACK BULLOH (NAVARRO) VICEROY PETROLEUM, LP 04418 NOACK GIDDINGS (AUSTIN CHALK-1) TEX-LEE OPERATING COMPANY 07490 NOACK -A- BULLOH (NAVARRO) VICEROY PETROLEUM, LP 08239 NOACK FARMS MINERVA-ROCKDALE WHITEHEAD RESOURCES, LTD. 16355 NOAH, T. R. BIG WELLS (SAN MIGUEL) DOUBLECHEK OPERATING 04237 NOAH, T.R. -A- GOOD LUCK (SAN MIGUEL) DOUBLECHEK OPERATING 06821 NOCKENUT GLEN HUMMEL (BARTOSH) RIO-TEX, INC. 18861 NOCKENUT GLEN HUMMEL, SW. (POTH B) RIO-TEX, INC. 18952 NOCKENUT PRESSLY-CAPT (POTH B) RIO-TEX, INC. 19108 NOHRA BUCHANAN R & S OIL PRODUCTION CO. 07519 NOLTE DUBOSE (EDWARDS -A-) MAGNOLIA OIL & GAS OPERATING LLC 03063 NORDIA GRANDE FIRST SHOT (AUSTIN CHALK) MAGNOLIA OIL & GAS OPERATING LLC 14245 NORDIA GRANDE -A- FIRST SHOT (AUSTIN CHALK) MAGNOLIA OIL & GAS OPERATING LLC 14260 NORDIA GRANDE "C" FIRST SHOT (AUSTIN CHALK) MAGNOLIA OIL & GAS OPERATING LLC 14299 NORDIA GRANDE "D" FIRST SHOT (AUSTIN CHALK) MAGNOLIA OIL & GAS OPERATING LLC 14298 NORMA JEANNE BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 19641 NOROMA UNIT 1 BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19679 NOROMA UNIT 2 BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19678 NOROMA UNIT 3 BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19680 NORRIS SMILEY (BUDA) DOMINION PRODUCTION COMPANY, LLC 15089 NORRIS A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19816 NORRIS B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19806


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ NORRIS C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19808 NORRIS D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19853 NORRIS E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19861 NORRIS F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19854 NORRIS G EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19849 NORTH ALLEN DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19552 NORTH CHARLOTTE PEARSALL (AUSTIN CHALK) COMPLETE ENERGY SERVICES, INC. 17562 NORTH CHARLOTTE FIELD UNIT CHARLOTTE, NORTH ROLAND OIL COMPANY 03220 NORTH ROGERS UNIT II BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19339 NORTH ROGERS UNIT III BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19340 NORTH ROGERS UNIT IV BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19360 NORTH ROGERS UNIT IX BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19358 NORTH ROGERS UNIT V BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19372 NORTH ROGERS UNIT VI BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19428 NORTH ROGERS UNIT VII BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19343 NORTH ROGERS UNIT VIII BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19359 NORTH, HAL DUNLAP BLACKMAR, JIM OIL OPERATOR 07298 NORTH, MARY HEIRS DUNLAP PETROSAURUS, INC. 07299 NORTHCUT A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 16021 NORTHCUT B EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 16364 NORTHCUT BA SA EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18023 NORTHCUTT -A- SALT FLAT BAIR'S LEASE SERVICE, INC. 01527 NORTHCUTT -B- SALT FLAT BAIR'S LEASE SERVICE, INC. 01528 NORTHCUTT DYE SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15696 NORTHCUTT, J. B. SALT FLAT BAIR'S LEASE SERVICE, INC. 01502 NORTHCUTT, J. B. -A- SALT FLAT BAIR'S LEASE SERVICE, INC. 05220 NORTHCUTT, J. B. -A- SALT FLAT OILTEX, LLC 04143 NORTHCUTT, J. L. SALT FLAT B. J. P. OPERATING 04134 NORTHCUTT, J. L. SALT FLAT M & J PRODUCTION COMPANY 01455 NORTHCUTT, J. L. SALT FLAT (EDWARDS) B. J. P. OPERATING 13979 NORTHCUTT, LULA SALT FLAT IRON ORCHARD OPERATING LLC 02810 NORTHCUTT, R.A. TENNEY CREEK B & S OPERATING COMPANY LLC 08771 NORTHWAY PEARSALL (AUSTIN CHALK) TEKNA SYNERGY CORPORATION 13135 NORTON, R.W. BANDERA TANK, WEST (2500) WILLIAMSON OPERATING CO. 09958 NORWOOD, IRA CHICON LAKE PARK AVENUE RESOURCES, INC. 02610 NOVOSAD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17364 NOVOSAD UNIT SMILEY (AUSTIN CHALK) EOG RESOURCES, INC. 18874 NOWLIN, T. P. BIG FOOT JB OIL & GAS WELL SERVICE 00045 NOWLIN, T. P. DOBSON (NAVARRO SAND) JB OIL & GAS WELL SERVICE 14335 NOWOTNY UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16902 NUECES LAND & LIVESTOCK CO. -B- RODRIQUEZ (SHALLOW) BOOMERANG OIL & GAS LLC 01437 NUECES LAND & LIVESTOCK CO. -B- RODRIQUEZ (SHALLOW) GGG OIL COMPANY, LTD. 18983 NUECES LAND & LIVESTOCK CO. -E- RODRIQUEZ (SHALLOW) GGG OIL COMPANY, LTD. 01435 NUECES LAND & LIVESTOCK CO. "F" RODRIQUEZ (SHALLOW) GGG OIL COMPANY, LTD. 12906 NUGENT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17403 NUNLEY SACATOSA (GEORGETOWN) CONOCOPHILLIPS COMPANY 14893 NUNLEY SACATOSA (GEORGETOWN) SHELL WESTERN E&P 14679 NWR EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15277 NWR WEST EAGLEVILLE (EAGLE FORD-1) PETROEDGE OPERATING IV LLC 19139 NWR WEST C EAGLEVILLE (EAGLE FORD-1) PETROEDGE OPERATING IV LLC 19152 NWR WEST D EAGLEVILLE (EAGLE FORD-1) PETROEDGE OPERATING IV LLC 19153


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ O. BORCHERS C EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17226 O. BORCHERS D EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16439 O. BORCHERS E EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17221 O.C. FEE SOMERSET GREAT PLAINS RESOURCES, INC. 11151 O'BRIEN -B- SOMERSET TRANSAMERICA ENERGY CORP. 11034 O'BRIEN -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11035 O'BRIEN -D- SOMERSET PAISANO PRODUCTION, INC. 11103 O'BRIEN, E.M. SOMERSET GREAT PLAINS RESOURCES, INC. 11306 O'CONNELL A EAGLEVILLE (EAGLE FORD-1) PROTEGE ENERGY III LLC 18360 O'CONNOR PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04615 O'NEAL MINERVA-ROCKDALE ROCKDALE PARTNERS, L.L.C. 01224 O'NEAL, E.H. -B- MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 08537 O'NEILL-BIEL UNIT DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 17785 OAK ISLAND -A- SOMERSET EVERETT OIL, INC. 11191 OBANION, J. T., DR. SPILLER DELRAY OIL, INC. 01683 OBREGON PEARSALL (AUSTIN CHALK) CORE E & P CORP. 07149 OBREGON PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 13188 OBREGON SALT FLAT LULING WELL SERVICE 02970 OBREGON B DUNLAP LULING WELL SERVICE 03825 OBREGON-A SALT FLAT LULING WELL SERVICE 07277 OCELOT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17597 OCHS -BRS- FAIRFIELD LONE STAR OPERATING COMPANY 11615 OCHS -TPA- FAIRFIELD LONE STAR OPERATING COMPANY 11613 OCKER D.A. & R.L. MARCELINA CREEK (AUSTIN CHALK) BAYLOR OPERATING, LLC 07602 OCKER, D.A. & R.L MARCELINA CREEK (BUDA) BAYLOR OPERATING, LLC 07047 OEHLER MARSHA ENERGY EQUITY, INC. 07135 OFFER PEARSALL (AUSTIN CHALK) KINLAW OIL CORPORATION 13463 OFFIELD MARTINDALE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15717 OHLHAUSEN FAIRFIELD CRYSTAL RESOURCES, INC 06900 OLA-FLAKE MINERVA-ROCKDALE VICEROY PETROLEUM, LP 02872 OLD RIVER RANCH DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15560 OLDJAMIE OIL SOMERSET CALK, ROGER D. 10143 OLENICK, CLAUDE W. FLORESVILLE, S. (AUSTIN CHALK) WRD OIL, LLC 07265 OLIVEIRA EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16930 OLIVER UNIT WHIPLASH (AUSTIN CHALK) ALCOR ENERGY, INC. 13412 OLJE GROUP WARDLAW TEXAS SECONDARY OIL CORPORATION 19944 OLLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16822 OLSON-TUCKER WHEELER (OLMOS) CLEARLY PETROLEUM, LLC 09665 OLSON, L.H.&S.A. SASPAMCO CONSORT RESOURCES INC. 07886 OLSON, R. H. HIGHGROVE (AUSTIN CHALK) MEB, LLC 12701 OLYMPIC A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18979 OLYMPIC B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18990 OLYMPIC C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18992 OLYMPIC D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18996 OLYMPIC E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19457 OLYMPIC F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19462 OLYMPIC G EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19463 OLYMPIC H EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19465 OLYMPIC J EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19466 OMBER H PEARSALL (AUSTIN CHALK) SEAGO PETROLEUM, INC. 13118 OMEGA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18790


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ OPEILA A EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16680 OPPENHEIMER PEARSALL (AUSTIN CHALK) BIGFOOT OIL LLC 12716 OPPENHEIMER A BRISCOE RANCH (EAGLEFORD) BLACKBRUSH O & G, LLC 16520 OPPENHEIMER A PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 16210 OPPENHEIMER AB UNIT PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 18154 OPPENHEIMER UNIT PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 16758 OPPENHEIMER-CALVERT UNIT PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 14398 OPPENHEIMER, JESSIE D. BIG FOOT WATSON ENERGY INVESTMENTS, LLC 00096 ORANGE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18577 ORGAIN HEIRS CEDAR CREEK GEOMEG ENERGY OPERATING CO., LLC 13208 ORION EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18459 ORION 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18571 ORO NEGRO UNIT 5 EAGLEVILLE (EAGLE FORD-1) GEOSOUTHERN ENERGY CORPORATION 17640 ORR, ROBERT BULLOH (NAVARRO) VICEROY PETROLEUM, LP 04479 ORR, ROBERT C. BULLOH (NAVARRO) VICEROY PETROLEUM, LP 09325 ORTIZ UNIT MINERVA-ROCKDALE WALKER OPERATING COMPANY 19963 ORTMAN SOUTHTON OILEX INT'L INVESTMENTS, INC. 09611 ORTMANN UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17389 ORTS, H. P. A-4 UNIT MAG (AUSTIN CHALK) LACY 03, LLC 05597 ORTS, H. P. B MAG (AUSTIN CHALK) LACY 03, LLC 12795 ORTS, H.P. -B- MAG (AUSTIN CHALK) LACY 03, LLC 05026 OSAGE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17599 OSAGE-FORSTER CARLOTA (GEORGETOWN) MISSION RIVER SYSTEMS, INC. 12475 OSAGE-RAMIREZ CARLOTA (GEORGETOWN) MAVERICK OSAGE OIL COMPANY, INC. 12039 OSBORNE, ROBERT NIXON ALCOR ENERGY, INC. 13831 OSCAR WOOD PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 17572 OSPREY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17246 OSTEEN, W. N. DALE-MCBRIDE HAZELETT OIL, INC. 04102 OSTRICH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18245 OTTO EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15450 OTTO LIEKE FASHING (EDWARDS LIME -B-) EXCALIBUR E & P, LLC 16752 OTTO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16612 OTTO, FRIEDA KAYE (NAVARRO) QUEST RESEARCH & DEV. CORP. 06275 OTTO, FRIEDA E. KAYE (NAVARRO) RAINER ENERGY, INC. 10667 OTTO, MAX WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01771 OVERTON, EARL COOKSEY MGR RESOURCES 06443 OWENS GRINDLE MINERVA-ROCKDALE SOUTHWEST RESOURCES, INC. 19223 OWENS, VAUGHN AND WILMA MILBUR (NAVARRO) CXL ENERGY LLC 14567 OYERVIDES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15399 OZEMA MARTIN HEIRS (ESCONDIDO) VIRTEX OPERATING COMPANY, INC. 10237 OZZY A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19906 OZZY B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19907 OZZY C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19908 P-H UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 15014 PACHECO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17719 PACHECO, JOEL G. JR. FAIRFIELD GENIE OIL COMPANY "A" 09797 PAGE CHEROKEE (NAVARRO) ERNEST OPERATING COMPANY 11342 PAGE, HOLLAND LULING-BRANYON BOB-KAT OIL CO. 02384 PAISANO UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 17990 PALM PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19434 PALM ENTERPRISE, INC. PALMERAS (OLMOS) OILTON RESOURCES, INC. 04348


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PALM, EDWIN H. FAIRFIELD PMP 09354 PALMER BROTHERS LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 07352 PALMER 28 AC. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 01169 PALMER, LUCY, 28 AC. LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 01170 PALMERAS -A- PALMERAS (OLMOS) OILTON RESOURCES, INC. 10549 PALMERAS,INC.FEE PALMERAS (OLMOS) LITTLE OIL & GAS, INC. 09961 PALO ALTO SOMERSET FIVE STAR OPERATING COMPANY 11037 PALOMA RANCH EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 19091 PALOMA-HORTON A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 12881 PALOMA-HORTON QUINTANILLA A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14345 PALOMINO LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15960 PALS RANCH PEARSALL (AUSTIN CHALK) SIEN OPERATING COMPANY, LLC 12379 PALS RANCH PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 15068 PALS RANCH PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 18371 PANCHO EAST UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 19070 PANCHO WEST UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18968 PANCOAST, R.F. COOKSEY COVER, DONALD R. 06096 PANTHER HOLLOW UNIT 1 BRISCOE RANCH (EAGLEFORD) SBOG, LLC 18694 PAPA UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18182 PAPE, CHARLES SOMERSET RAINER ENERGY, INC. 12467 PAPE, LOUIS P. SOMERSET RAINER ENERGY, INC. 11200 PARAMORE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17106 PARISH, R. A. DARST CREEK (BUDA) GARRISON LTD. 02764 PARISH, R. A. NCT-1 DARST CREEK (BUDA) SIGNAL OIL AND GAS COMPANY 02760 PARK, C. R. STOCKDALE (POTH A) P.S.N. PETROLEUM, INC. 05406 PARK, C.R. STOCKDALE (CARRIZO) LA VERNIA OIL 05869 PARKER, DELTON MINERVA-ROCKDALE HILL, NATHANIEL ALLEN 10089 PARKER, G.K. GOOD LUCK (SAN MIGUEL) PRESTIDGE, SHERYL 06244 PARKER, H.L. JR. SMILEY, SE (AUSTIN CHALK) KIDD PRODUCTION CO. 07478 PARKER, HOBSON NIXON KIDD PRODUCTION CO. 13787 PARKER, MARY ET AL PILGRIM (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 13429 PARKS ET AL PILGRIM (AUSTIN CHALK) CRYSTAL RESOURCES, INC 13436 PARKWAY PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 18957 PARR WILDCAT DIAMOND M DRLG & EXPL CO. 19515 PARR EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 15591 PARR LITTLE NEW YORK SELLERS LEASE SERVICE, INC. 08546 PARSONAGE UNIT WAELDER, SOUTH (ESCONDIDO) PREMIUM EXPLORATION COMPANY 11459 PARSONS SOMERSET MATLA INC. 11129 PAT UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17893 PATRICIA PEACH CREEK (AUSTIN CHALK) TOLTECH OIL & GAS, INC.-HOUSTON 11776 PATRICK MOCZYGEMBA EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16226 PATRICK MOCZYGEMBA B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16531 PATRICK MOCZYGEMBA C EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16827 PATRICK MOCZYGEMBA D EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16828 PATRICK WEST BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15326 PATRICK, WILLIAM PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 12437 PATTERSON DUBOSE EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17016 PATTERSON/NEALE PEARSALL (AUSTIN CHALK) WESTERN FIELD EXPLORATION, INC. 12628 PATTESON EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16247 PATTESON 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17485 PATTESON 3 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18137


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PATTESON 4 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18156 PATTESON 5 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18152 PATTESON-PIGOTT EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18129 PATTESON-ROWELL 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17581 PATTILLO NIXON PROGAS OPERATING, INC 06555 PATTON LULING-BRANYON S & T SALVAGE 03482 PATTON SALT FLAT RUJO 03089 PATTON, H.C. SOMERSET YORK, WILLIAM A. 10889 PATTON, J. O. LULING-BRANYON EAGLE FORD OIL CO., INC. 01115 PATTON, J. O., EST. LULING-BRANYON SHEFTS & SHEFTS, INC. 02493 PAVELKA UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16140 PAWELEK MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14785 PAWELEK MOY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15479 PAWELEK UNIT MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14197 PAWELEK, L. J., ET UX PAWELEK (AUSTIN CHALK) FIRST ROCK, INC. 04729 PAWLIK-RODRIGUEZ UNIT EAGLEVILLE (EAGLE FORD-1) MAGNOLIA OIL & GAS OPERATING LLC 18862 PAYNE BULLOH (POTH) CADDO ENERGY CO., INC. 05334 PAYNE MILBUR (NAVARRO) AUSTIN RIDGE ENERGY CORPORATION 04352 PAYNE, JOHN LA VERNIA DOEGE, DONALD 07116 PAYSINGER, W. H. INDEPENDENCE (STRAY 3350) BRIDGER OIL INC. 03893 PC PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18682 PC EAST UNIT EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 19238 PC WEST UNIT EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 19221 PC-Q EF EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 15261 PEACH ORCHARD UNIT NO. I FAIRFIELD CRYSTAL RESOURCES, INC 09134 PEACH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18478 PEACOCK MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16681 PEAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18716 PEARCE EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 17633 PEARCE PEARSALL (AUSTIN CHALK) LEEXUS OIL LLC 15026 PEARMON, J. M. LULING-BRANYON EAGLE FORD OIL CO., INC. 01135 PEARSALL PARTNERS/GLG W.A.CARNES PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 12439 PEARSALL SWD TOALSON (OLMOS -A-) NGL WATERSOLUTIONS EAGLEFORD,LLC 15578 PEARSALL-ADAMS PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 12728 PEARSALL, T J EAGLEVILLE (EAGLE FORD-1) BLACKBRUSH O & G, LLC 15545 PEARSON 'C' MINERVA-ROCKDALE ALLIED OPERATING TEXAS, LLC 17507 PEARSON, R.L. -A- PIERSON (SERPENTINE 1500) GREAT PLAINS RESOURCES, INC. 12103 PEARSON, W.T. MINERVA-ROCKDALE TRUSTAR OPERATING COMPANY INC. 10045 PECAN GAP(5050) PECAN GAP (5050) DUAL S PRODUCTION LLC 18002 PECAN GROVE PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19013 PECAN TREE SWD ELAINE, W. (SAN MIGUEL) SELECT ENERGY SERVICES, LLC 15304 PECK PEACH CREEK (AUSTIN CHALK) NOVO ENERGY RESOURCES 10616 PECK, H.J. PEACH CREEK (AUSTIN CHALK) NOVO ENERGY RESOURCES 07137 PEDERNALES UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18604 PEELER A.W.P. (OLMOS) TEXEGY OPERATING COMPANY LLC 16373 PEELER CROWTHER (JAMBERS) KALER ENERGY CORP. 14636 PEELER CROWTHER (5600) KALER ENERGY CORP. 14678 PEELER EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 18304 PEELER JOURDANTON (CARRIZO SAND) PULLIN LEASE SERVICE, INC. 14717 PEELER JOURDANTON (QUEEN CITY) PULLIN LEASE SERVICE, INC. 14271 PEELER LEFT HOOK (WALES) ORO RESOURCES, LLC 14573


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PEELER LEFT HOOK (WRIGHT) ORO RESOURCES, LLC 14558 PEELER LEFT HOOK (WRIGHT) RICKAWAY ENERGY, CORP. 15148 PEELER SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14715 PEELER WRIGHT HOOK (WALES SAND) ORO RESOURCES, LLC 14445 PEELER WRIGHT HOOK (WRIGHT SAND) ORO RESOURCES, LLC 14440 PEELER WRIGHT HOOK (WRIGHT SAND) RICKAWAY ENERGY, CORP. 15209 PEELER C SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14540 PEELER EFS A.W.P. (OLMOS) TEXEGY OPERATING COMPANY LLC 19802 PEELER EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16338 PEELER MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16507 PEELER NE UNIT A EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 18327 PEELER NE UNIT B EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 18332 PEELER RANCH EAGLEVILLE (EAGLE FORD-1) DEWBRE PETROLEUM CORPORATION 15472 PEELER RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15251 PEELER RANCH B EAGLEVILLE (EAGLE FORD-1) DEWBRE PETROLEUM CORPORATION 17494 PEELER RANCH EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16559 PEELER RANCH MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16864 PEELER RANCH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15252 PEELER SMEC A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17028 PEELER SW INDIO TANKS (PEARSALL) CINCO OIL & GAS, LLC 17177 PEELER UNIT A.W.P. (OLMOS) TEXEGY OPERATING COMPANY LLC 19137 PEELER UNIT I MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18517 PEELER UNIT II MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18496 PEELER UNIT III MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18502 PEELER, A.M. PEELER, N. (WILCOX 4500) L & L INVESTMENTS 05891 PEELER, GRAVES CROWTHER (JAMBERS) BRYMER CONTRACTING INCORPORATED 14033 PEELER, GRAVES PEELER RANCH (WALES) BRYMER CONTRACTING INCORPORATED 14059 PEIKERT -AD- SALT FLAT, WEST IAO ENERGY, LLC 12253 PEIKERT -B- SALT FLAT, WEST IAO ENERGY, LLC 11464 PEIKERT -C- SALT FLAT, WEST IAO ENERGY, LLC 10339 PEIKERT -DA- SALT FLAT, WEST IAO ENERGY, LLC 12252 PEIKERT -F- SALT FLAT, WEST PETROSAURUS, INC. 07226 PEIKERT -H- SALT FLAT, WEST IAO ENERGY, LLC 06903 PEIKERT -N- SALT FLAT, WEST PETROSAURUS, INC. 06906 PEIKERT -P- SALT FLAT, WEST PETROSAURUS, INC. 07623 PEIKERT "A" SALT FLAT PETROSAURUS, INC. 06470 PEIKERT "E" SALT FLAT, WEST PETROSAURUS, INC. 09710 PEIKERT "FA" SALT FLAT, WEST PETROSAURUS, INC. 13828 PEIKERT-C2- SALT FLAT, WEST PETROSAURUS, INC. 08825 PEIKERT-G- SALT FLAT, WEST PETROSAURUS, INC. 07648 PEIKERT, QUINN SALT FLAT PETROSAURUS, INC. 05493 PEN RANCH UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 19839 PENA LOS ANGELES (4800) EVX MIDSTREAM PARTNERS LLC 16322 PENA MARCELINA CREEK (AUSTIN CHALK) BAYLOR OPERATING, LLC 13153 PENA A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 17239 PENA A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18736 PENA B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19389 PENA B UNIT EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18552 PENA C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19994 PENA CREEK I BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15375 PENA CREEK III BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15311


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PENA CREEK III UNIT A EAGLEVILLE (EAGLE FORD-1) EXCO OPERATING COMPANY, LP 15360 PENA CREEK III UNIT C BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15423 PENA CREEK III UNIT E BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15554 PENA CREEK UNIT PENA CREEK (OLMOS 2400) FLINT OAK ENERGY, LLC 12022 PENA CREEK UNIT PENA CREEK (SAN MIGUEL 3RD) FLINT OAK ENERGY, LLC 06557 PENA D UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19995 PENA KOTHMAN LORENZO (AUSTIN CHALK) EL TORO RESOURCES LLC 19851 PENA NORTH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19351 PENA SOUTH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16575 PENA SOUTH-JLH LIC A ALLOC A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19628 PENA SOUTH-JLH LIC A ALLOC B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19629 PENA SOUTH-JLH LIC A ALLOC C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19630 PENA SWD EAGLEVILLE (EAGLE FORD-1) EVX MIDSTREAM PARTNERS LLC 19920 PENA-BUTTS UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16059 PENA-PENA LOS ANGELES (4800) EVX MIDSTREAM PARTNERS LLC 16037 PENA-WINFIELD A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16088 PENA, C. PEARSALL (AUSTIN CHALK) MATADOR PRODUCTION COMPANY 05004 PENA, CRUZ WINTER GARDEN (OLMOS) DOUBLE EAGLE PETROLEUM CORP 06091 PENFOLD WINTER GARDEN, E. ( SAN MIGUEL) BETA OIL CORPORATION 08997 PENNINGTON UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16425 PENSHORN, HARVEY G. LA VERNIA TANGLEHEAD OPERATING, LLC 10631 PENSHORN, THEKLA LA VERNIA J.A.G. OIL & GAS 11924 PENSHORN, THEKLA LA VERNIA TANGLEHEAD OPERATING, LLC 00875 PENSHORNE, A. LA VERNIA RAMPAGE EXPLORATION, INC. 06885 PERALES SOMERSET PERALES, EUGENE E.-EVELYN T. 10828 PERCHERON 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19252 PERDIZ UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16697 PERKINS EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15427 PERKINS OIL UNIT PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 13263 PERKINS, JESSIE PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 10315 PERLITZ-WRANGLER PILOSA (OLMOS) MUNOZ FARMS OPERATING CO., LLC 14677 PERLITZ-WRANGLER PILOSA, EAST (2ND SAN MIGUEL) CENTAUR EXPLORATION LLC 14621 PERLITZ, JONSSON GRIFFIN PILOSA, EAST (2ND SAN MIGUEL) ESPADA OPERATING LLC 07764 PERRIGO-WITHERSPOON A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16194 PERRIGO-WITHERSPOON B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16220 PERRY MINERVA-ROCKDALE CAMINO REAL TECHNOLOGIES INC 09693 PERRY SOMERSET K.A. BARNES OIL & GAS OPER, LLC 10932 PERRY "C" MINERVA-ROCKDALE C-D OIL COMPANY, INC. 14653 PERRY A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19952 PERRY, D. H. MILBUR (NAVARRO) THREE FORKS OPERATING CO, LLC 04129 PERRY, E. F. TENNEY CREEK GEOMEG ENERGY OPERATING CO., LLC 05274 PERRY, E. F., ETAL TENNEY CREEK GINCO OPERATING CO. 03522 PERRY, J. O. SALT FLAT GAUGE OIL COMPANY 02175 PERRY, P. H. PECAN GAP (5050) CXL ENERGY LLC 14645 PERRY, P. H. -A- MILBUR (NAVARRO) CXL ENERGY LLC 04293 PERRY, P. H. -A- MINERVA-ROCKDALE CAMINO REAL TECHNOLOGIES INC 09114 PERRY, P. H., JR. MILBUR, N. (WILCOX 2660) THREE FORKS OPERATING CO, LLC 03876 PERRY, P.H. JR. PECAN GAP (5050) CXL ENERGY LLC 09883 PERSIMMON UNIT BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19652 PES TEST WELL WILDCAT PIONEER ENERGY SERVICES CORP. 18079 PESL PILCHER (AUSTIN CHALK) D & S PETROLEUM, INC. 12926


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PETER EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15495 PETER GIBSON WILDCAT HOUSTON GULF ENERGY CORPORATION 19127 PETERS STACY (OLMOS -A-) PREMIER MINERALS, INC. 17375 PETERS FAMILY TRUST (ALLOCATION) EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16163 PETERS UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16090 PETERS UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16200 PETERS, M. C. & E. E. STACY (OLMOS -A-) MAZCO ENERGY LLC 01700 PETERS, VICTOR F. JR. FAIRFIELD AVM OIL ENTERPRISES 07883 PETERSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17716 PETRO PARDS BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16031 PETROFORCE-BRUCE MINERVA-ROCKDALE TRUSTAR OPERATING COMPANY INC. 18278 PETROFORCE-CARMONA MINERVA-ROCKDALE TRUSTAR OPERATING COMPANY INC. 17663 PETROFORCE-WALTER MINERVA-ROCKDALE TRUSTAR OPERATING COMPANY INC. 18288 PETTIT PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 07815 PETTIT, EDWARD YORK ET AL UNIT FAIRFIELD GENIE OIL COMPANY "A" 08945 PETTUS EAGLEVILLE (EAGLE FORD-1) CL&F OPERATING LLC 17560 PETTUS (SA) EAGLEVILLE (EAGLE FORD-1) CL&F OPERATING LLC 17968 PETTY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17903 PETTY, O.S. CATARINA, SW (SAN MIGUEL,OIL) PETROPOINT ENERGY OPERATING, LLC 14386 PEVEHOUSE, ET AL MINERVA-ROCKDALE ENDURO OIL COMPANY INC. 12192 PEVERETT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18212 PFEIFFER PEARSALL (AUSTIN CHALK) WCS OIL & GAS CORPORATION 14262 PFEIFFER PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18081 PFEIL KHAN (AUSTIN CHALK) CEI OPERATING LLC 14077 PFEIL KHAN (AUSTIN CHALK) CROSSROADS MINERAL PROD., L.L.C. 19078 PFEIL NIXON STATIA ENTERPRISES, INC 13791 PFEIL UNIT MARCELINA CREEK (BUDA) EVEREST RESOURCE COMPANY 18779 PFIEFFER, M. LITTIG MINT ENERGY, INC. 08100 PFLUGER EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 17904 PFLUGER WASHBURN, NORTH (WILCOX -M- SD.) SUTTON PRODUCING CORP. 14046 PFLUGER UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15547 PFLUGER, W. E. WASHBURN, NORTH (WILCOX -M- SD.) PRECISION PETRO CORP. 02378 PFLUGER, W. E., -B- WASHBURN, NORTH (WILCOX -M- SD.) PRECISION PETRO CORP. 02582 PGE BROWNE LORENZO (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 19101 PHEASANT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16256 PHELAN EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17544 PHILLIP C. JAMES ET AL UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 13519 PHILLIPS MINERVA-ROCKDALE ROCKDALE PARTNERS, L.L.C. 01254 PHILLIPS, GERALD B. WHERRY & GREEN (REKLAW) KENTEX PETROLEUM INC. 01781 PHOENIX UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17320 PHZ UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15550 PICKENS PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15667 PICKENS -C- SOMERSET GREEN STAR 09494 PICKENS 'B' NORTH BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 17812 PICKENS RANCH PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15800 PICKENS RANCH PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13647 PICKENS ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15711 PICKENS-WEAVER PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19481 PICKENS, J.Z. ET AL SOMERSET CALK OIL COMPANY 08360 PICKENS, STAGE SOMERSET CRYSTAL RESOURCES, INC 11040 PICKENS, STAGE -A- SOMERSET FIVE STAR OPERATING COMPANY 11650


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PICKENS, STAGE -B- SOMERSET CRYSTAL RESOURCES, INC 11651 PICKENS, STAGE -C- SOMERSET FIVE STAR OPERATING COMPANY 10950 PICKENS, STAGE -D- SOMERSET GREAT PLAINS RESOURCES, INC. 11076 PICKENS, STAGE -E- SOMERSET GREAT PLAINS RESOURCES, INC. 11077 PICKENS, STAGE -F- SOMERSET CRYSTAL RESOURCES, INC 11041 PICKWILL PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17276 PIEKERT -EQ- SALT FLAT, WEST PETROSAURUS, INC. 07177 PIENIAZEK, GEORGE COOKSEY DOEGE, DONALD 10650 PIENIAZEK, TEDDY JONES B & B OIL DEVELOPMENT 08753 PIENIAZEK, WALTER COOKSEY KOCH, I. ERNEST 05732 PIERCE FAIRFIELD 338 OIL & GAS, INC. 17181 PIERCE, J. M., ESTATE SPILLER GINCO OPERATING CO. 01682 PIERCE, JAMES TAYLOR-INA GHISELLI OIL, INC. 03077 PIERCE, JOHN R. DUNLAP BAIR'S LEASE SERVICE, INC. 09936 PIERCE, JOHN R. DUNLAP RED SHELL INC 03877 PIERCE, JOHN R. -B- DUNLAP GINCO OPERATING CO. 04261 PIERCE, JOHN R. "B" DUNLAP BAIR'S LEASE SERVICE, INC. 13913 PILCHER LYTTON SPRINGS D & S PETROLEUM, INC. 12464 PILCHER/EVANS LYTTON SPRINGS D & S PETROLEUM, INC. 12633 PILGRIM UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 19074 PILGRIM UNIT WSW FIRST SHOT (AUSTIN CHALK) EARTHSTONE OPERATING, LLC 19111 PILGRIM, FLOYD SOMERSET PETROSAURUS, INC. 10867 PINKY SUN T S H (OLMOS) FLETCHER OPERATING, LLC 14942 PINNACLES A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19580 PINNACLES B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19581 PINTAIL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15962 PINYON PINE A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19241 PINYON PINE B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19242 PINYON PINE C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19107 PIPES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17816 PIRATE 'M' UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 18638 PIRATE 'N' UNIT EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 18622 PIRATE A EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17746 PIRATE B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17598 PIRATE K EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17825 PIRATE L EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17842 PISTOL UNIT BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15330 PITMAN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16417 PITMAN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16489 PLANT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17282 PLEASANTON, E. (ESCONDIDO UNIT) PLEASANTON, E. (ESCONDIDO) EAGLE FORD OIL CO., INC. 04491 PLECKER EZZELL SAN CAJO OIL COMPANY 00570 PLOCEK UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15758 PLOCEK UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15957 PLOCH SASPAMCO SR OIL AND GAS, L.L.C. 13058 PLOCH, MARY R. TRUST SASPAMCO SR OIL AND GAS, L.L.C. 14013 PLOEGER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17313 PLOMERO UNIT C EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 17798 PLUM CRAZY MINERVA-ROCKDALE TESUQUE OIL & GAS LLC 18838 PLUM CREEK TENNEY CREEK LTX OIL COMPANY, L.L.C. 11768 PLUTO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18243


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PMI FOSTER FAIRFIELD PREMIER MINERALS, INC. 17673 POAGE SOMERSET GREAT PLAINS RESOURCES, INC. 11660 POCO MAS RANCH HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19613 POCO MAS RANCH HC3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19676 POCO MAS RANCH HC4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19689 POCO MAS RANCH HC5 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19632 POCO MAS RANCH HC6 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19688 POCO MAS RANCH HC8 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19716 POCO MAS RANCH UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16209 POCO MAS RANCH UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16903 POCO MAS RANCH UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16936 POCO MAS RANCH UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16626 POCO MAS RANCH UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16167 POENISCH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15556 POENITZ LA VERNIA PRODUCTION RESOURCES, INC. 17805 POENITZ, HELMUT LA VERNIA J.A.G. OIL & GAS 03052 POENITZ, HELMUT LA VERNIA PRODUCTION RESOURCES, INC. 00876 POERNER, A. FAIRFIELD BETA OIL CORPORATION 06203 POERNER, LOUISE FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 07327 POGUE CROWN, E. (NAVARRO) CRYSTAL RESOURCES, INC 14051 POGUE, C.P. FAIRFIELD OILEX INT'L INVESTMENTS, INC. 08097 POLAN EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 15516 POLASEK, ALLEN SOMERSET PETRO LIONS, LLC 11205 POLOCEK PEARSALL (AUSTIN CHALK) ARRCO OPERATING, LLC - 12955 POLOCEK ET AL PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12851 POLZER CHEROKEE (AUSTIN CHALK, LO.) CIMROD, LLC 16500 POLZER, EUGENE CHEROKEE (NAVARRO) VICEROY PETROLEUM, LP 05607 POOLE SOMERSET TEJONES OPERATING CORPORATION 11686 POOLEY, A. L. SPILLER DELRAY OIL, INC. 01693 POPE FAIRFIELD DRACHEN OIL COMPANY 07853 POPE SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 18647 POPE, B. J. UNIT KELLY LYNNE (ANACHCHO) PUMP-N-PRODUCTION, LLC 11880 POPE, B. J. UNIT STOCKDALE, EAST (CHALK, LOWER) PUMP-N-PRODUCTION, LLC 11916 POPE, W.I. SALT FLAT GAUGE OIL COMPANY 12173 PORCUPINE UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18336 PORTER, FLOYD R. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 12741 POSEY DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02761 POSEY DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02802 POSEY NIXON BJT OIL COMPANY, INC 12138 POSEY NIXON DULA PRODUCTION, LLC 15193 POSEY & BAKER (CHEVRON) DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02726 POSEY & BAKER (CHEVRON) DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02780 POSEY BAKER 3H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14602 POSEY UNIT NIXON P.S.N. PETROLEUM, INC. 13575 POSEY, W. R. -B- DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 02816 POSEY, W.R. -B- DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 08001 POULTRY SALT FLAT LULING WELL SERVICE 08503 POUND, W. E. CHARLOTTE (NAVARRO) REC, LLC 03302 POWELL BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 16925 POWELL JEANIE (SERPENTINE) WOODHAM OIL CORPORATION 08975 POWELL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17434


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ POWELL UNIT ZAV A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17450 POWELL UNIT ZAV B BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17451 POWELL, C. Y., JR. -B- LENTZ MEB, LLC 14996 POWELL, C.Y. JR. LENTZ XOPHI ENERGY, LLC 05689 POWERS EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 15776 POWERS E UNIT EAGLEVILLE (EAGLE FORD-1) EQUINOR TEXAS ONSHORE PROP LLC 19979 POWERS G UNIT EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 18648 POWERS UNIT EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 16273 POWERS-SWAIM UNIT SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 16710 POWERS, J.M. KAYE (NAVARRO) THREE J ENERGY, INC. 05901 PRASSEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17977 PRATER, JOSEPH SOMERSET GREAT PLAINS RESOURCES, INC. 11278 PRATT MINERVA-ROCKDALE BETRO, INC. 15093 PRATT, R. T. SPILLER NORTEX OIL & GAS CORP. 03352 PRATT, R. T. -A- SPILLER INTER GLOBAL TEXAS OIL & GAS LLC 03353 PRATT, R. T., -A- SPILLER WIEGAND BROS, DRLG. CO. 03471 PRATT, S.G. MINERVA-ROCKDALE CAP OPERATING INC. 05778 PRESIDIO RANCH UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16701 PRESSLEY CHICON LAKE PARK AVENUE RESOURCES, INC. 11866 PRESTAGE PEARSALL (AUSTIN CHALK) PRIME OPERATING COMPANY 14930 PRESTON FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 14187 PRESTON PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18755 PRESTON A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16436 PREWITT, T. BULLOH (NAVARRO) MAG ENERGY 10247 PRICE "B" EL INDIO, N.(OLMOS) ALLTEX EXPLORATION, INC. 11458 PRICE, ROBERT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 12717 PRIEST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17634 PRIEST-TRINKLE BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 19958 PRINCE MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15727 PRITCHETT PEARSALL (AUSTIN CHALK) EL TORO RESOURCES LLC 16342 PROCTOR, G W 3-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14452 PROCTOR, G. W. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01093 PROCTOR, G. W. 4-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14589 PROCTOR, GENE PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 12621 PRONGHORN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16999 PROTHRO, JOHN E. BARBARAS PATCH (SAN MIGUEL) MORE TEXAS OIL 03443 PRUETT MINERVA-ROCKDALE JET-TEX OIL & GAS, LLC 10235 PRUITT, E. J. CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 03269 PRUITT, E. J. -D- CROWN, E. (NAVARRO) MAZCO ENERGY LLC 00343 PRUITT, E. J. -E- PRUITT JPW ENERGY, L.L.C. 01404 PRUITT, E. J. -E- PRUITT, SE. (OLMOS) MAZCO ENERGY LLC 01417 PRUITT, E. J. D2 CROWN, E. (NAVARRO) MAVERICK ENERGY GROUP, INC. 13964 PRUITT, E.J. CHARLOTTE (EDWARDS LIME, SEG. B) J.P. OIL COMPANY, INC. 09763 PRUITT, E.J. D2 CROWN, E. (NAVARRO) ORIGIN PRODUCTION COMPANY, INC. 15812 PRUITT, E.J. E5 PRUITT, SE. (OLMOS) JENEX PETROLEUM CORPORATION 13965 PRUSKI SOMERSET CRYSTAL RESOURCES, INC 11099 PRUSKI UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17092 PRYOR RANCH BRISCOE RANCH (EAGLEFORD) MCDAY ENERGY CORP. 15396 PRYOR RANCH PEARSALL (BUDA LIME) MCDAY ENERGY CORP. 15661 PRYOR RANCH WINN-DULCE (BRACERO-OIL) MCDAY ENERGY CORP. 08653 PRYOR RANCH WINN-DULCE (DEL MONTE) MCDAY ENERGY CORP. 14868


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PRYOR RANCH WINN-DULCE (DEL MONTE-OIL) MCDAY ENERGY CORP. 08655 PRYOR RANCH WINN-DULCE (ELAINE) MCDAY ENERGY CORP. 07902 PRYOR-PICKENS LILLIE MARIE (SAN MIGUEL) VIRTEX OPERATING COMPANY, INC. 06462 PRYOR, IKE T. ET AL -B- PRYOR RANCH, WEST (ELAINE) CUATRO PETRO CORP. 05398 PRYOR, IKE T. III ET AL LILLIE MARIE (SAN MIGUEL) LONGHORN OIL PROPERTIES, INC. 13596 PRYOR, IKE T. III ET AL LILLIE MARIE (SAN MIGUEL) VIRTEX OPERATING COMPANY, INC. 10321 PSENCIK UNIT KELLY LYNNE (ANACHCHO) PREVAIL ENERGY, INCORPORATED 13809 PT UNIT B EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 16794 PTD UNIT #1 SOMERSET QUEST RESEARCH & DEV. CORP. 13203 PUDGE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16720 PUENTE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17973 PULSAR EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18750 PUMPKIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18715 PURCELL, C. E. DUNLAP GINCO OPERATING CO. 03737 PURCELL, C. E. SPILLER GINCO OPERATING CO. 03354 PURCELL, C. E. "B" SPILLER GINCO OPERATING CO. 02182 PURCELL, C.E. SPILLER LULING O&G LLC 10024 PURSCH-MARSHALL EAGLEVILLE (EAGLE FORD-1) AGERON ENERGY, LLC 16301 PURSCH, WOODY A.W.P. (OLMOS) AWP OPERATING COMPANY 12235 PURVIS FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 10489 PURVIS, JAMES LOUIS FAIRFIELD GENIE OIL COMPANY "A" 06844 PURYEAR, O. B. IMOGENE, SOUTHEAST BRYMER CONTRACTING INCORPORATED 00705 PUTMAN, P. W., ETAL SOMERSET PETROSAURUS, INC. 01638 PW UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17368 PYRON CHICON LAKE RPG OPERATING LLC 17019 PYRON, A. M. SOMERSET GREAT PLAINS RESOURCES, INC. 01639 Q KIEL EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17067 Q-BALLARD EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17114 Q-JCB-A A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14564 QUAIL EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16592 QUESADA SOMERSET GREAT PLAINS RESOURCES, INC. 11042 QUESADA -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10945 QUETZAL A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19864 QUETZAL B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19865 QUETZAL C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19866 QUETZAL D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19867 QUINTANILLA A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 15117 QUINTANILLA EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16574 QUINTANILLA - JCB A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14334 QUINTANILLA -B- A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14598 QUINTANILLA CCR EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16915 QUINTANILLA FBH A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 15132 QUINTANILLA FBH A.W.P. (WILCOX 6200) CLEARLY PETROLEUM, LLC 15231 QUINTANILLA MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16600 QUINTANILLA ME-YOU EF EAGLEVILLE (EAGLE FORD-1) EL DORADO GAS & OIL, INC. 15366 QUINTANILLA NO. 6 A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14225 QUINTANILLA OL A.W.P. (OLMOS) TEXOZ E&P I, INC. 18178 QUINTANILLA PEACOCK HC1 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19793 QUINTANILLA SAN MIGUEL A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14296 QUINTANILLA SMEF EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16909 QUINTANILLA TEAL HC1 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19792


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ QUINTANILLA TEAL HC2 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19829 QUINTANILLA TEAL UNIT I MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16532 QUINTANILLA UNIT A MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19761 QUINTANILLA-BALLARD A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 11699 QUINTANILLA-WHITE EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17455 QUINTANILLA, LEO TRUSTEE A.W.P. (OLMOS) AWP OPERATING COMPANY 13970 QUINTANILLA, T.C. FAIRFIELD QUINTANILLA, TONY C. 07854 QUINTANILLA, T.C. -B- FAIRFIELD QUINTANILLA, TONY C. 08256 R R PRINCE RANCH SWD, LTD EAGLEVILLE (EAGLE FORD-1) EVX MIDSTREAM PARTNERS LLC 17081 R. A. KNIGHT PEARSALL (BUDA LIME) TEXAS INTERNATIONAL RESOURCE LLC 18851 R. COLLUM JR PEACH CREEK (AUSTIN CHALK) PIE OPERATING, LLC 17314 R. D. TUCKER UNIT PILGRIM (AUSTIN CHALK) TRISUN ENERGY SERVICES LLC 15071 R. HENRY EAGLEVILLE (EAGLE FORD-1) AGERON ENERGY, LLC 17860 R. L. MINOR PEARSALL (BUDA, S.) TEXAS INTERNATIONAL RESOURCE LLC 19000 R. L. SCHAEFER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15688 R. MAY A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16012 R. MAY B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16361 R. MAY B-GUAJILLO UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17935 R. MTZ UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16339 R. V. S. OIL UNIT NO. 3 PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 13084 R. WASHINGTON UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16365 R.H. PICKENS, ET AL 'A' INDIO TANKS (PEARSALL) VENADO OPERATING COMPANY LLC 17392 R.H. PICKENS, ET AL 'B' INDIO TANKS (PEARSALL) VENADO OPERATING COMPANY LLC 17567 R.H. PICKENS, ET AL "A" BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15405 R.H. PICKENS, ET AL "B" BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15473 R.H. PICKENS, ET AL A8 UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15608 R.H. PICKENS, ET AL A9 UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 16147 R.H. PICKENS, ET AL B19 UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 17328 R.H. PICKENS, ET AL B20 UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 17327 R.H. PICKENS, ET AL, A7 BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15609 R.V.S. PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 12856 R.V.S. OIL UNIT PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 12889 RAABE MARCELINA CREEK (AUSTIN CHALK) SEDCO RESOURCES INC 13143 RABB, BESSIE DUNLAP AUSTIN OPERATING, LLC. 07569 RABB, BESSIE DUNLAP SHEFTS & SHEFTS, INC. 03805 RABB, D. D. ESTATE STULTING JAD OIL, INC. 05547 RABB, W. DUNLAP K AND R OPERATING 08382 RABKE SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14794 RABKE-MASPERO OIL UNIT SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14916 RABKE-MASPERO UNIT SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14770 RABKE, HENRY SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14897 RACCOON CREEK 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18589 RACKLEY, HENRY CHICON LAKE RLU OIL & GAS, INC. 00304 RACKLEY, HENRY OIL UNIT CHICON LAKE RLU OIL & GAS, INC. 11359 RACKLEY, LEE W. BEAR CREEK STRICKER DRILLING CO., INC. 05819 RAEMAY-HINER ALLOCATION A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18982 RAEMAY-HINER ALLOCATION B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18985 RAFTER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16111 RAINDROP B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19711 RAINDROP C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19712 RAINDROP D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19713


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ RAINDROP E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19714 RAINDROP UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18462 RAINE, J. R. INDEPENDENCE, WEST (OLMOS) BRIDGER OIL INC. 14330 RAINE, J.R. INDEPENDENCE, WEST (OLMOS 3900) BRIDGER OIL INC. 07209 RAINEY UNIT PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 15907 RAKOWITZ UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18017 RAKOWITZ UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16543 RAKOWITZ UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18359 RALL, GEORGE E. CHICON LAKE GENIE OIL COMPANY 07130 RALLY EAGLE BRISCOE RANCH (EAGLEFORD) MUELLER EXPLORATION, INC. 15508 RALLY PETROLEUM PEARSALL (AUSTIN CHALK) MUELLER EXPLORATION, INC. 15167 RALLY PETROLEUM PEARSALL (BUDA, S.) MUELLER EXPLORATION, INC. 17524 RALPH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16985 RALPH PEARSALL (AUSTIN CHALK) AMPAK OIL COMPANY 13330 RALPH & SONS FARMS, INC FAIRFIELD RLU OPERATING, LLC 19346 RALPH EDWARDS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16025 RAMBIE SOMERSET GREAT PLAINS RESOURCES, INC. 11090 RAMIREZ ALTA VISTA RAMIREZ, VALENTE 07518 RAMIREZ MONKSFIELD (350 SAND) RAMIREZ, VALENTE 11958 RAMIREZ DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15985 RAMSEY WILDCAT CASHFLOW EXPLORATION, INC. 12866 RAMSEY-FAULKNER 'A' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16308 RAMSEY-FAULKNER 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16450 RAMSEY-FAULKNER 'C' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16492 RAMSEY-LARSON 'A' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16092 RAMSEY-LARSON 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16270 RAMSEY-LARSON 'C' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16347 RAMZINSKI UNIT NIXON ORIGIN PROD CO GONZALES PROP LLC 13892 RAMZINSKI, JOHN COOKSEY THREE J ENERGY, INC. 00307 RANCHO D LA TIERRA ROJA EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15679 RANCHO DE ANCHO L.P. EAGLEVILLE (EAGLE FORD-1) CL&F OPERATING LLC 17103 RANCHO DE LA TIERRA ROJA EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15728 RANCHO HC 1 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19490 RANCHO RINCON BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 15940 RANCHO TIERRA ROJA HC1 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19383 RANCHO TRES HIJOS EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15386 RANCHO TRES HIJOS "A" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15540 RANCHO TRES HIJOS "B" EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16558 RANCHO TRES HIJOS ALLOCATION B EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19968 RANCHO UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16051 RANCHO UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16554 RANFT DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 14223 RANFT, J. H. EST. DARST CREEK (BUDA) DJ EXPLORATION, INC. 04041 RANGEL UNIT A ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15570 RANGER BEALL RANCH BRISCOE RANCH (EAGLEFORD) LONESTAR OPERATING, LLC 15378 RANGERS A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19666 RANGERS B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19692 RANGERS C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19700 RANKIN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15927 RANKIN PEARSALL (BUDA LIME) FRIO, INC. 12586 RASMUSSEN UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16525


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ RATHJEN A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15801 RATHJEN B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15788 RATHJEN C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16548 RAUSCHHUBER BIG FOOT BENCHMARK TEXAS PETROLEUM, LLC. 10059 RAUSCHHUBER, EMORY BIG FOOT BENCHMARK TEXAS PETROLEUM, LLC. 06364 RAY BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16055 RAYMOND FEE MINERVA-ROCKDALE RAYMOND, WM. C. 14158 RB AVANT UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15733 RCJ CO.,INC. FAIRFIELD QUEST RESEARCH & DEV. CORP. 09639 RCR-HINTON UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17318 RCR-WYATT UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17651 RCRS-FLETCHER UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18316 RCRS-JANE EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 18347 RCT A EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16706 RCT B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16673 RDG UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 18951 REAL, HAROLD FLORESVILLE, EAST P.S.N. PETROLEUM, INC. 06102 REAMS, WAYNE -A- STOCKDALE (CARRIZO) P.S.N. PETROLEUM, INC. 06568 REBA UNIT PANDORA, NW (AUSTIN CHALK) P.S.N. PETROLEUM, INC. 12274 RECOIL GAWLIK EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15821 RECTOR FENTRESS (1750) BOB-KAT OIL CO. 10170 RECTOR -A- FENTRESS (1750) BOB-KAT OIL CO. 10349 RED RANCH EFS BRISCOE RANCH (EAGLEFORD) ATLAS OPERATING LLC 18977 RED STAG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15936 REDFISH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17365 REDHEAD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16951 REDING, C. M. REDING (POTH SAND) SYJ OIL & GAS, INC. 03371 REDWOOD A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18972 REDWOOD B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18970 REDWOOD C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18971 REDWOOD D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19474 REDWOOD E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19475 REDWOOD F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19486 REED EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 16323 REED -A- SALT FLAT, WEST OILTEX, LLC 10174 REED -AA- SALT FLAT, WEST STAR OIL, LLC 10183 REED -BB- SALT FLAT, WEST PETROSAURUS, INC. 10156 REED -BBB- SALT FLAT, WEST PETROSAURUS, INC. 10298 REED -C- SALT FLAT, WEST PETROSAURUS, INC. 10259 REED ADDITION UNIT SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 07932 REED CONSOLIDATED SALT FLAT, WEST PETROSAURUS, INC. 07188 REED-MACKEY LULING-BRANYON GREAT PLAINS RESOURCES, INC. 03745 REED, FRANK EST. SALT FLAT PETROSAURUS, INC. 05420 REED, FRANKIE DUNLAP (SERPENTINE) R & S OIL PRODUCTION CO. 00539 REED, N. W. SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 09656 REED, N. W. -B- SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 09657 REED, N.W. SALT FLAT, WEST OILTEX, LLC 07501 REED,F SALT FLAT, WEST PETROSAURUS, INC. 06802 REEH RINEHART (AUSTIN CHALK) MORE TEXAS OIL 01871 REEH, ADOLPH SOMERSET TEXAS SECONDARY OIL CORPORATION 10803 REESE SWD CHARLOTTE, S. (EDWARDS) R360 ENV SOLUTIONS OF TX, LLC 15899


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ REID EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16835 REID B EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16703 REILLY EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16048 REILLY EL INDIO, N.(OLMOS) TEXOKAN OPERATING, INC. 09575 REIMHERR, ROBERT N. CHICON LAKE GENIE OIL COMPANY 07976 REINHARD-ZIENTEK PEARSALL (BUDA, S.) SAGE ENERGY COMPANY 18096 REITZER SOMERSET GREAT PLAINS RESOURCES, INC. 10943 REITZER, JOEL SOMERSET GREAT PLAINS RESOURCES, INC. 07816 REMINGTON 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18781 REMINGTON 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18782 RENEE PEACH CREEK (AUSTIN CHALK) AV-TECH RESOURCES CORPORATION 09941 REPUBLIC-COUNTISS DAN COUNTISS (WRIGHT SAND) REPUBLIC RESOURCES, LLC. 14444 RETZLOFF TOM-MAY PSA A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19586 RETZLOFF TOM-MAY PSA B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19815 RETZLOFF TOM-MAY PSA C EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19608 RETZLOFF-MAY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15694 RETZLOFF-TOM UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19777 REYES PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 15086 REYES, A. CEDAR CREEK GEOMEG ENERGY OPERATING CO., LLC 00194 REYES, MARGARITO FAIRFIELD HODGE, C. ENERGY INC. 09171 RHEINLANDER FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 14703 RHEINLANDER, F. T. FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 15160 RHEW NIXON LP OPERATING, LLC 19348 RHINO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17703 RHINO-FOWLERTON 97 SWD EAGLEVILLE (EAGLE FORD-1) RHINO OPERATING COMPANY, LLC 16054 RHINO-TILDEN 306 SWD A.W.P. (OLMOS) RHINO OPERATING COMPANY, LLC 17095 RHODES PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 18948 RHODES, J. E. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 03768 RHODES, J.E. "S" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06404 RHODES, JAMES, ETAL TENNEY CREEK SHUMAKE OIL 01734 RIBEYE UNIT BRISCOE RANCH (EAGLEFORD) ATLAS OPERATING LLC 18072 RICE PANDORA, NW (AUSTIN CHALK) JEMCO PRODUCTION, INC 12608 RICE, ROBERT M. PANDORA, NW (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 08290 RICHARD PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18585 RICHARD THRASHER MINERVA-ROCKDALE RICHARD'S TEXAS TEA 18832 RICHARDS IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 03453 RICHARDSON PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16224 RICHARDSON, BISHOP LA VERNIA PRODUCTION RESOURCES, INC. 07567 RICHTER EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 17219 RICHTER W. P. HOLLOWAY (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04139 RICHTER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17537 RICHTER UNIT POTH, EAST (AUSTIN CHALK) TRIVISTA OPERATING LLC 08809 RICHTER UNIT WEINERT (BUDA) EVEREST RESOURCE COMPANY 18189 RICHTER UNIT A ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16553 RICHTER UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17215 RICHTER, ALEX & VERA PAWELEK (AUSTIN CHALK) GINCO OPERATING CO. 13844 RICHTER, EMMA F. SOMERSET GREAT PLAINS RESOURCES, INC. 10913 RICHTER, H. E. FASHING (AUSTIN CHALK) VICEROY PETROLEUM, LP 14259 RICHTER, KATE IMOGENE, S. (CARRIZO) TRAVELERS OIL & GAS, INC. 00700 RICHTER, KATIE IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 00693 RICHTER, KATIE ET AL IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 14853


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ RICHTER, PAUL ACLETO CREEK (POTH A) PRODUCTION RESOURCES, INC. 11531 RICK -A- SOMERSET PETROSAURUS, INC. 11044 RICKS, E. ET AL SOMERSET GREAT PLAINS RESOURCES, INC. 10808 RIDDLE FAIRFIELD DRACHEN OIL COMPANY 06367 RIDDLE "A" BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 13260 RIDDLE, C.L. BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 12102 RIDDLE, E. BUCHANAN DARST CREEK OIL COMPANY 07384 RIDDLE, GEORGE -A- MINERVA-ROCKDALE RUBAC TECHNICAL SERVICES 09310 RIDDLE, J.M. BUCHANAN AUSTIN OPERATING, LLC. 10276 RIDDLE, W. C. RIDDLE LSA OPERATING 04573 RIDDLE, W. H. LYTTON SPRINGS DARST CREEK OIL COMPANY 01160 RIDDLE, W. M. BATEMAN MEB, LLC 00022 RIEGER OTTO "A" MATTHEWS NORTH TEXAS ENERGY,INC. 14004 RIEGER, OTTO MATTHEWS NORTH TEXAS ENERGY,INC. 01174 RIELLY, R. W. MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 11773 RIFF TAYLOR-INA RIFF, OLGA 06508 RIGGAN PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12771 RIGGAN PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12782 RIGGAN PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 17079 RIGGAN "A" PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 12875 RIGGAN-BREAZEALE UNIT PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03207 RIGGAN, J. M. PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03177 RIGGAN, J. M., -A- PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03203 RIGGAN, J.M. PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 12100 RIGGAN, J.M. JR. PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 09786 RIGGS -C- PEARSALL (AUSTIN CHALK) STARR OPERATING COMPANY 08202 RIGGS -F- PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 08173 RIGGS "E" PEARSALL (AUSTIN CHALK) SOUTH TEXAS OPERATING COMPANY 14749 RIGGS "G" PEARSALL (AUSTIN CHALK) SOUTH TEXAS OPERATING COMPANY 09768 RIGHTMER, JOHN W. LA VERNIA RIGHTMER, JOHN W. 09255 RIHN, DAVID TAYLOR-INA LONGSHOT ENERGY LLC 10065 RILEY -B- SOMERSET PRODUCTION RESOURCES, INC. 11169 RILEY -C- SOMERSET PRODUCTION RESOURCES, INC. 11173 RILEY POTTS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17551 RILEY, G. PLEASANTON, E. (BUDA) BRYMER CONTRACTING INCORPORATED 10364 RILEY, J.C. SOMERSET PARKER, G.R. COMPANY, INC 10821 RILEY, MARY ELLA SHAW -A- SOMERSET BETA OIL CORPORATION 10837 RILEY, MARY ELLA SHAW -AP- SOMERSET PRODUCTION RESOURCES, INC. 10824 RIO GRANDE UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18599 RIO MEDINA FARMS -A- SOUTHTON MARTINEZ OIL & GAS LLC 09529 RIO NUECES PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 18379 RIOJAS FAIRFIELD HODGE, C. ENERGY INC. 09747 RIOS, LAURA LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01095 RIOS, R. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01096 RIPPEY PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 13573 RIPPEY -A- BIG FOOT LEASE ROLLOVER OPERATIONS, INC. 14376 RISINGER BRISCOE RANCH (EAGLEFORD) EL TORO RESOURCES LLC 19022 RISINGER LORENZO (AUSTIN CHALK) EL TORO RESOURCES LLC 19972 RITCHIE PEARSALL (AUSTIN CHALK) RITCHIE, H. G. JR. 04979 RITCHIE -C- PEARSALL (AUSTIN CHALK) RITCHIE, H. G. JR. 09606 RITCHIE "C-2" PEARSALL (AUSTIN CHALK) RITCHIE, H. G. JR. 12516


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ RITCHIE FARMS EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15315 RITCHIE FARMS A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19593 RITCHIE FARMS B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19594 RITCHIE FARMS C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17793 RITCHIE FARMS D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19595 RITCHIE FARMS E UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19596 RITCHIE FARMS F UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17794 RITCHIE FARMS G UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19597 RITCHIE FARMS H UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19484 RITCHIE FARMS I UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19598 RITCHIE FARMS J UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18260 RITCHIE FARMS K UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19599 RITCHIE FARMS L UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19503 RITCHIE FARMS M UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19600 RITCHIE FARMS N UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18531 RITCHIE FARMS O UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19601 RITCHIE FARMS P UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18579 RITCHIE FARMS Q UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19602 RITCHIE FARMS R UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19487 RITCHIE FARMS S UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19603 RITCHIE FARMS T UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18686 RITCHIE FARMS U UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18432 RITCHIE FARMS UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16486 RITCHIE FARMS W UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18699 RITCHIE-TALLEY UNIT NIXON ATTIS OPERATING I INC. 09032 RITCHIE, H. G. JR. PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 05126 RITCHIE, H. G. JR. -A- PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 05238 RIVAS SOMERSET PETROSAURUS, INC. 11264 RIVER LOWE RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15581 RLT UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17471 RLT UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17531 RNG UNIT WELL EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 16317 RNR YBAR EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18059 ROAMEL, P. "B" DARST CREEK (BUDA) GARRISON LTD. 04342 ROAMEL, P. "A" DARST CREEK (BUDA) GARRISON LTD. 02743 ROAMEL, P. "C" DARST CREEK (EDWARDS) GARRISON LTD. 02803 ROARK ARNOLD-WELDON (WRIGHT) REPUBLIC RESOURCES, LLC. 14190 ROARK MINERVA-ROCKDALE JENKINS, R. D. 01255 ROARK, H. M. ARNOLD-WELDON (WRIGHT S SEG) WYNN-CROSBY OPERATING, LTD. 03929 ROBERT HINDES EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16077 ROBERT J.S. SMITH EAGLEVILLE (EAGLE FORD-1) ROSEWOOD RESOURCES, INC. 19281 ROBERT KOTARA EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16974 ROBERT PRICE -A- PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 15491 ROBERT PRICE -A-2 UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 14747 ROBERT PRICE 59 PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 18498 ROBERT WALKER UNIT ZAV A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17819 ROBERT WALKER UNIT ZAV B BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17827 ROBERTS MIDWAY (2300 OIL) RED OAK OIL COMPANY, LLC 14042 ROBERTS PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 12928 ROBERTS PEARSALL (BUDA LIME) CHESAPEAKE OPERATING, L.L.C. 15171 ROBERTS FEE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01101


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ROBERTS UNIT MONKSFIELD (350 SAND) ROOT DRILLING COMPANY 10577 ROBERTS, BENTON PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 13231 ROBERTS, FRANK LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01099 ROBERTS, J. BOB MIDWAY (2300 OIL) SHELDON RESOURCES, L.P. 11795 ROBERTS, J. M. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01100 ROBERTS, JESSE I. KAYE (NAVARRO) CASTILLO OIL COMPANY LLC 01958 ROBERTS, K. PEARSALL (AUSTIN CHALK) VICEROY PETROLEUM, LP 12450 ROBERTS, KATIE ET AL PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 12895 ROBERTS, KATIE ET AL PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 05344 ROBERTS, VIVIAN DARST CREEK (BUDA) GARRISON LTD. 04515 ROBERTSON SALT FLAT, WEST CASTILLO OIL COMPANY LLC 08806 ROBERTSON UNIT EAGLEVILLE (EAGLE FORD-1) BXP OPERATING, LLC 18429 ROBERTSON, HARRY SOMERSET U. D. MAN, INC. 10774 ROBERTSON, K.E. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 13741 ROBERTSON, R.H. SOMERSET SPAIN OIL COMPANY 10794 ROBERTSON, R.H. -A- SOMERSET SPAIN OIL COMPANY 10797 ROBERTSON, R.H. -B- SOMERSET SPAIN OIL COMPANY 12257 ROBINSON BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13848 ROBINSON DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 13891 ROBINSON I DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 13950 ROBINSON, J. A. TRUST CHRISTINE, SE. (WILCOX) KEBO OIL & GAS, INC. 04837 ROBLES, JULIO KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 00769 ROBLES, S. C. SCOTTY (BARTOSH SAND) GREENWERKS OUTDOOR SERVICES LLC 01571 ROBUCK -A- BUCHANAN YNEW CORPORATION 12018 ROBUCK, BERRY LULING-BRANYON J. H. W. INC. 04566 ROBUCK, M. BUCHANAN YNEW CORPORATION 12017 ROCHE, LUCY BIG FOOT MAVERICK ENERGY GROUP, INC. 06251 ROCHE, LUCY BIG FOOT (OLMOS D-3 SAND) WATSON ENERGY INVESTMENTS, LLC 00122 ROCHESTER 11 ACRES SALT FLAT, WEST FINALY RESOURCES LLC 06725 ROCHESTER-B- SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 06723 ROCHESTER, J. #4 SALT FLAT EAGLE FORD OIL CO., INC. 06450 ROCHESTER, J. UNIT SALT FLAT PETROSAURUS, INC. 06467 ROCHESTER, JOHNNY SALT FLAT, WEST EAGLE FORD OIL CO., INC. 06715 ROCK CREEK RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15652 ROCKDALE IND. SCHOOL DIST. MINERVA-ROCKDALE AB RESERVE, LLC 02204 ROCKDALE STATE BK. "A" MILBUR (NAVARRO) BETRO, INC. 05921 ROCKPILE RANCH PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 15113 ROCKY COMFORT-HIXON EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15928 ROCKY COMFORT-HIXON A ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19930 ROCKY COMFORT-HIXON B ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19934 ROD, R.J. (BOB) PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 13881 ROD, R.J. (BOB) -A- PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 12393 RODENBERG LULING-BRANYON B & S OPERATING COMPANY LLC 03693 RODENBERG -A- LULING-BRANYON LEFT BEHIND RECOVERY, LLC 17669 RODENBERG, ALTON T. DUNLAP SHEFTS & SHEFTS, INC. 07618 RODENBERG, ALTON T. DUNLAP T. A. W. COMPANY 06842 RODENBERG, ALTON T. SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 07591 RODENBERG, ALTON T. -A- DUNLAP EAGLE FORD OIL CO., INC. 13715 RODENBERG, ANDREW J. LULING-BRANYON GINCO OPERATING CO. 03166 RODENBERG, MRS. IDA -B- LULING-BRANYON FIELD OPERATING COMPANY, INC. 03688 RODENBURG, ALTON T DUNLAP GREAT PLAINS RESOURCES, INC. 06836


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ RODENBURG, ALTON T. DUNLAP GEOMEG ENERGY OPERATING CO., LLC 06841 RODRIGUEZ CHICON LAKE GENIE OIL COMPANY 02922 RODRIGUEZ FAIRFIELD LONGSHOT ENERGY LLC 12117 RODRIGUEZ, AUGUSTIN SOMERSET PETROSAURUS, INC. 03217 RODRIGUEZ, MARIO E. CHICON LAKE EVERETT OIL, INC. 07371 RODRIGUEZ, ROBERTO S. CHICON LAKE EVERETT OIL, INC. 06515 RODRIQUEZ /SHALLOW/ FLD. UNIT RODRIQUEZ (SHALLOW) BOOMERANG OIL & GAS LLC 03450 RODRIQUEZ /SHALLOW/ FLD. UNIT RODRIQUEZ (SHALLOW) GGG OIL COMPANY, LTD. 18954 ROEBUCK, M. LULING-BRANYON RED SHELL INC 02405 ROEGELEIN FAIRFIELD GREAT PLAINS RESOURCES, INC. 08078 ROEMER WEAVER & OLSON (POTH) PUMP-N-PRODUCTION, LLC 11351 ROEMER, IDA WEAVER & OLSON (POTH) PUMP-N-PRODUCTION, LLC 02585 ROGERS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15428 ROGERS FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 09599 ROGERS MAPLE HUGHES (BURTON 1550) PRODUCTION RESOURCES, INC. 11399 ROGERS -B- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 08836 ROGERS DENTONIO 29 UNIT BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19756 ROGERS DENTONIO 31 UNIT BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19318 ROGERS THEO KYOTE BRITANCO, L.L.C. 15079 ROGERS, C. C. UNIT -1- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 03398 ROGERS, F.H. FAIRFIELD AAA OIL COMPANY 06435 ROGERS, THEO -A- KYOTE SEAGULL OPERATING CO., INC. 07803 ROGERS, THEO "A" KYOTE WATSON ENERGY INVESTMENTS, LLC 14021 ROGERS, THEO "C" KYOTE DISCOVERY PETROLEUM, L.L.C. 14015 ROGERS, THEO "D" KYOTE WATSON ENERGY INVESTMENTS, LLC 14020 ROGERS, THEO. -A- KYOTE TOMAHAWK PETROLEUM 00803 ROJO UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 14103 ROLAND P RIDDLE ARIZONA OIL 14806 ROLAND, P. RIDDLE H - A ENERGY, INC. 11820 ROLLERT-WADDELL (MANFORD) DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 07655 ROLLERT/MANFORD KENS (SERPENTINE) AUSTIN OPERATING, LLC. 13867 ROLLERT, B. P. LULING-BRANYON RBR OPERATING, INC. 01141 RONALD ELAINE, W. (SAN MIGUEL) CML EXPLORATION, LLC 17530 ROOF, JOHN H. FAIRFIELD CIVRON PETROLEUM RES., LLC 08209 ROOS, LORENE WILLIS COUSINS (QUEEN CITY 5740) PEARL, BILL H. PRODUCTIONS, INC. 04487 ROOT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17404 ROOT, JOHN PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 12146 ROSE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17415 ROSEBROCK, ALFRED LA VERNIA QUEST RESEARCH & DEV. CORP. 02484 ROSEMARIE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17963 ROSENAUER STACY (OLMOS -A-) BAYLOR OPERATING, LLC 15305 ROSENAUER, MATTIE BIG FOOT WATSON ENERGY INVESTMENTS, LLC 00037 ROSKYDAL, DONALD LA VERNIA ROSKYDAL, LAVERNE 08080 ROSS, A. DUNLAP KIDD PRODUCTION CO. 03809 ROSS, C. E. DUNLAP COLBY PRODUCTION RESOURCES, LLC 03806 ROSS, C. P. LULING-BRANYON B-3 OIL CO. 01042 ROSS, C. P. LULING-BRANYON GINCO OPERATING CO. 01119 ROSS, C. P. -A- LULING-BRANYON LIF-TEX OIL RECOVERY, INC. 03146 ROSS, C.E. -B- DUNLAP CENTEX PIPE & EQUIPMENT, INC. 06947 ROSS, C.E. -C- DUNLAP EAGLE FORD OIL CO., INC. 07317 ROSS, C.P. -A- LULING-BRANYON GINCO OPERATING CO. 11357


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ROSS, ETTA SALT FLAT SHEFTS & SHEFTS, INC. 03084 ROSSER, T I #2 ROSSER (SERPENTINE) UNITED OPERATING, LLC 09386 ROSSER, T.I. #4 ROSSER (SERPENTINE) UNITED OPERATING, LLC 10063 ROSSOW-BRZOZOWSKI 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17236 ROSSOW-BRZOZOWSKI 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17237 ROUGEOU UNIT SALT FLAT OFFSPRING WELL SALVAGE 02895 ROUNTREE WILDCAT WINCHESTER OIL & GAS LLC 19068 ROUNTREE MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 01214 ROUSE, NANNIE T. LINNE, S. (POTH -A- SAND) PRODUCTION RESOURCES, INC. 03715 ROWELL-CHANDLER EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17639 ROWELL-COLWELL EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16142 ROWELL-SPRINGS EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17656 ROXANA UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16066 RSI ATASCOSA SWD EAGLEVILLE (EAGLE FORD-1) SOUTH TEXAS OILFIELD SOL, LLC 16240 RTH UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16780 RUBIES DREAM UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16723 RUBIES DREAM UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16609 RUBIO, BENITO FAIRFIELD FAR, INC. 06640 RUBOTTOM, ETAL, UNIT SALT FLAT OFFSPRING WELL SALVAGE 03074 RUBY RUTH A EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17445 RUBY RUTH B EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17745 RUCKER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18705 RUDDOCK VACCINATING SERVICE PILGRIM (AUSTIN CHALK) MARANATHA OIL COMPANY 14808 RUDDOCK, UPTON PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 12977 RUDELOFF, ADOLPH LA VERNIA THREE J ENERGY, INC. 06283 RUDOLPH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17359 RUIZ UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16660 RUIZ UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16663 RUMFIELD, W.J. PEARSALL (AUSTIN CHALK) LONE STAR OPERATING COMPANY 05153 RUPLE FARMS PRUITT, N. (4500) 3 W INVESTMENTS LLC 12147 RUPLE FARMS PRUITT, S.E. (ESCONDIDO) 3 W INVESTMENTS LLC 09596 RUPLE FARMS PRUITT, SE. (OLMOS) 3 W INVESTMENTS LLC 09582 RUSHING, PAUL E. SOUTHTON RUSHING OIL CO. 06192 RUSKIN BEAR CREEK LR PETROLEUM 00026 RUSSELL BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 17614 RUSSELL MINERVA-ROCKDALE BABCO OIL & GAS, LLC 11983 RUSSELL PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18549 RUSSELL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18250 RUSSELL, WILLIAM A. FAIRFIELD CALK, ROGER D. 07374 RUTH PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15684 RUTHERFORD, BILL JOURDANTON (RECKLAW) STRATA STAR PETROLEUM CORP. 09052 RUTHERFORD, MARTIN LEMING (2934 SAND) STARBURST ENERGY, INC. 09543 RUTHERFORD, MARTIN ESTATE LEMING (2934 SAND) GEM OIL & GAS COMPANY 11324 RUTHERFORD, W. C "A" A.W.P. (OLMOS) XTO ENERGY INC. 08659 RUTHERFORD, W.C. EST. A.W.P. (OLMOS) XTO ENERGY INC. 08109 RUTHPICK PEARSALL (BUDA, S.) CML EXPLORATION, LLC 18472 RVR EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16742 RWC UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17380 RYAN CLOETER (WILCOX 5800) TARE RESOURCES, LLC 14810 RYAN, W. J. CHARLOTTE (NAVARRO) RICKAWAY ENERGY, CORP. 05449 RYCHLIK UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 16070


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ S & H TRUST EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17198 S & H TRUST UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17189 S BAUERLE UNIT BRISCOE RANCH (EAGLEFORD) AGERON ENERGY, LLC 19131 S BEEVER ET AL DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16419 S HERBST UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16798 S HERBST UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16799 S MCKNIGHT PEARSALL (AUSTIN CHALK) D90 ENERGY, LLC 18293 S MCKNIGHT A PEARSALL (BUDA, S.) D90 ENERGY, LLC 18692 S MCKNIGHT B PEARSALL (AUSTIN CHALK) D90 ENERGY, LLC 18664 S MCKNIGHT C PEARSALL (AUSTIN CHALK) D90 ENERGY, LLC 18663 S P J S T LODGE JOURDANTON VIRTEX OPERATING COMPANY, INC. 14549 S. DUDERSTADT EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15494 S. KING UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15453 S. T. S. /SOUTH TEXAS SYNDICATE/ WASHBURN, EAST (4800) S & T SALVAGE 02935 S.A.U.G.R. RY. DINSMOOR (CARRIZO) RAY JR. CO., INC. 00508 SABCO AUTUMN PEARSALL (AUSTIN CHALK) WHITE MARLIN OPERATING CO, LLC 12941 SABCO ELAINE AC ELAINE (AUSTIN CHALK) WHITE MARLIN OPERATING CO, LLC 16429 SABCO ELAINE AC 99 ELAINE (AUSTIN CHALK) WHITE MARLIN OPERATING CO, LLC 17267 SABCO ELAINE SM ELAINE (OLMOS) WHITE MARLIN OPERATING CO, LLC 19762 SABRE CLIP UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18038 SACHS-CURTIS B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17195 SACHS-TRUST A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17194 SADA FAIRFIELD CALK OIL COMPANY 10545 SADDLEBRED 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18527 SAENGER-HOFFMAN UNIT SOMERSET PETROSAURUS, INC. 03351 SAGO BOWERS PEARSALL (AUSTIN CHALK) OILTON RESOURCES, INC. 12463 SAKO UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16540 SAKO-WATSON UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16865 SAKO-WATSON UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16746 SAL MAR "B" SOMERSET GREAT PLAINS RESOURCES, INC. 11420 SAL-MAR -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11515 SAL-MAR UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 10838 SALAS FAIRFIELD APACHE OIL COMPANY 06551 SALDANA, RAUL SOMERSET SOUTHWEST LOOP 1604, LTD. 16922 SALINAS UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16911 SALINAS UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16874 SALINAS UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16784 SALINAS UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16782 SALINAS, DANIEL SOMERSET ASTRO ENERGY 10895 SALINAS, DANIEL & ESIDRO SOMERSET ASTRO ENERGY 10958 SALLIE CLARK ESTATE -B- LULING-BRANYON AUSTIN OPERATING, LLC. 04133 SALLIS BOULDIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16779 SAM BALL 'B' LA VERNIA TEXAS SECONDARY OIL CORPORATION 19758 SAMKAT EFS BRISCOE RANCH (EAGLEFORD) CALIENTE OIL LLC 18326 SAMPLE BAROS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16129 SAMPLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16605 SAMPLE UNIT STOCKDALE, EAST (CHALK, UPPER) BJT OIL COMPANY, INC 14027 SAMPLE-VANA EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16330 SAMPLE, JOHN A EAGLEVILLE (EAGLE FORD-1) CL&F OPERATING LLC 17432 SAMUEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18424 SAMUELS, LESLIE P. PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 07777


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SAMUELS, LESLIE P. -B- PEARSALL (AUSTIN CHALK) L & J EXPLORATION, LLC 13036 SAN AMBROSIA A HUGH FITZSIMMONS (SAN MIGUEL) SM ENERGY COMPANY 19611 SAN ANTONIO A1100 BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19691 SAN ANTONIO A1100 B BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 19812 SAN ANTONIO COTTON MILL SOUTHTON OILEX INT'L INVESTMENTS, INC. 01657 SAN ANTONIO COTTON MILL -A- SOUTHTON OILEX INT'L INVESTMENTS, INC. 01660 SAN MARCOS UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18430 SAN MIGUEL A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16630 SAN MIGUEL B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16295 SAN MIGUEL C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17127 SAN MIGUEL D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16727 SAN MIGUEL RANCH EF EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 15513 SAN MIGUEL RANCH OL A.W.P. (OLMOS) SILVERBOW RESOURCES OPER, LLC 15367 SAN PEDRO RANCH HUGH FITZSIMONS (OLMOS) PRIME OPERATING COMPANY 04761 SAN PEDRO RANCH HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 14952 SAN PEDRO RANCH HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 04762 SAN PEDRO RANCH AC FITZ (AUSTIN CHALK) PRIME OPERATING COMPANY 05544 SAN PEDRO RANCH DS HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 02543 SAN PEDRO RANCH-CONOCO HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 04325 SAN SABA UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18603 SANCHEZ & GONZALES SOMERSET GREAT PLAINS RESOURCES, INC. 11049 SANCHEZ & GONZALES -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11050 SANCHEZ & GONZALES, O.C. SOMERSET GREAT PLAINS RESOURCES, INC. 11149 SANCHEZ/GONZALES UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 07247 SANCHEZ, B. UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 11080 SANDEEN, JOHN JOURDANTON VIRTEX OPERATING COMPANY, INC. 00740 SANDEEN, JOHN JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 13732 SANDERS FARM MINERVA-ROCKDALE ERNEST OPERATING COMPANY 07069 SANER RANCH WILDCAT PROTEGE ENERGY III LLC 15131 SANER RANCH SANER RANCH (SAN MIGUEL) PROTEGE ENERGY III LLC 14947 SANFORD UNIT DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15589 SANJAC UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16796 SANTA ANN 1 MINERVA-ROCKDALE NORTHLAND PETROLEUM, LLC 19329 SANTA CRUZ REALTY, ET AL UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15400 SANTA CRUZ-TEN MILE UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 17900 SANTANA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18004 SANTELLAN UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16534 SANTOSCOY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16717 SARAH E. FERRY UNIT-BLOCK 13 PLEASANTON (EDWARDS LIME 8100) JPW ENERGY, L.L.C. 13992 SARAH MCFADIN BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19638 SARAH-EMILY PEARSALL (AUSTIN CHALK) D. AND Y. YUNK PRODUCTIONS 13278 SARTAIN ASSETS LTD OIL UNIT PEARSALL (AUSTIN CHALK) C6 OPERATING, L.L.C. 16481 SASSER, STUART -A- PLEASANTON, E. (EDWARDS) PEARL, BILL H. PRODUCTIONS, INC. 09644 SAUER, OLGA FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 02065 SAUNDERS, J.J. PRUITT PEARL, BILL H. PRODUCTIONS, INC. 11646 SAUNDERS, SUSIE BIG FOOT MAVERICK ENERGY GROUP, INC. 00038 SAUNDERS, SUSIE D BIG FOOT (OLMOS D-3 SAND) MAVERICK ENERGY GROUP, INC. 15057 SAVANNAH BIG WELLS(SAN MIGUEL, LO., EAST) RCLJ CONSTRUCTION, INC. 13495 SAWYER, N.C. FAIRFIELD PREMIER MINERALS, INC. 09282 SAYLEE RANCH SWD MANTI KUDU SOUTH SAYLEE SERVICES, LLC 16294 SAYLEE SOUTH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16027


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SAYRE UNIT EAGLEVILLE (EAGLE FORD-1) EARTHSTONE OPERATING, LLC 19363 SBR A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14305 SBR "C" A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14841 SCARBOROUGH CALLIHAM ELDON OIL CO. 15169 SCHAAF, JOHN W. JORDAN (NAVARRO B) VICEROY PETROLEUM, LP 14293 SCHACKEL, ANNIE ET AL SALT FLAT IRON ORCHARD OPERATING LLC 03341 SCHACKEL, JAKE SALT FLAT OCCIDENTAL ENERGY COMPANY, INC. 06493 SCHAEFFER, T. LARREMORE MAVERICK ENERGY GROUP, INC. 00813 SCHAUER, F. T. PILGRIM (BUDA) CEI OPERATING LLC 13009 SCHAUER, MONROE UNIT MAG (AUSTIN CHALK) FIRST ROCK, INC. 10281 SCHAUTTEET, R. TAYLOR-INA KLAEGER OPERATING COMPANY, LLC 06112 SCHEFFLER EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16934 SCHELLER, H. A. BIG FOOT MAVERICK ENERGY GROUP, INC. 00102 SCHENKEL WILDCAT PNP OPERATING COMPANY LLC 18824 SCHENKEL TURNEY PNP OPERATING COMPANY LLC 19766 SCHENKEL/TURNEY TURNEY MORTIMER PRODUCTION COMPANY 03407 SCHERTZ/SANCHEZ LA VERNIA PRODUCTION RESOURCES, INC. 09045 SCHERTZ, ELTON LA VERNIA PRODUCTION RESOURCES, INC. 00940 SCHESKE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18280 SCHIEFELBEIN, RUDOLF E. NIXON, SE (AUSTIN CHALK) MESSY OIL AND GAS, LLC 13476 SCHIEVELBEIN, B. -A- LA VERNIA SCHIEVELBEIN, BRYAN O. 10042 SCHIEVELBIEN, ALBERT LA VERNIA TANGLEHEAD OPERATING, LLC 06012 SCHIFFERS MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14383 SCHIFFERS RANCH MARCELINA CREEK (BUDA) FIRST ROCK, INC. 12316 SCHIFFERS RANCH -A- MARCELINA CREEK (BUDA) FIRST ROCK, INC. 12110 SCHIFFERS, MOBERLEY SUTIL (AUSTIN) FIRST ROCK, INC. 14172 SCHLATHER, MAX LINNE (POTH -A- SAND) PRODUCTION RESOURCES, INC. 10488 SCHMIDT BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13842 SCHMIDT PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 12920 SCHMIDT SOMERSET SEAGULL OPERATING CO., INC. 11223 SCHMIDT -A- SOMERSET SEAGULL OPERATING CO., INC. 11219 SCHMIDT, BETTIE "S" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01882 SCHMIDT, BETTYE TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02495 SCHMIDT, BETTYE -B- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01713 SCHMIDT, G.E. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 07141 SCHMIDT, IRA G., MRS. TAYLOR-INA KLAEGER OPERATING COMPANY, LLC 01712 SCHMIDT, IRA G., MRS. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02458 SCHMIDT, J.D. UNIT I TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06701 SCHMIDT, LENORA TAYLOR-INA PRODUCTION RESOURCES, INC. 01723 SCHMIDT, LENORA -B- TAYLOR-INA PRODUCTION RESOURCES, INC. 10480 SCHMIDT, O. K. TAYLOR-INA PRODUCTION RESOURCES, INC. 04146 SCHMIDT, OSCAR TAYLOR-INA PRODUCTION RESOURCES, INC. 01724 SCHMIDT, OSCAR "C" TAYLOR-INA PRODUCTION RESOURCES, INC. 14991 SCHMIDT, OSCAR B TAYLOR-INA PRODUCTION RESOURCES, INC. 14565 SCHNEEBELI, EARL DIXIE (NAVARRO B) SELLERS LEASE SERVICE, INC. 11497 SCHNEEBELI, EARL MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 17579 SCHNEEBELI, KITTIE MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 12211 SCHNEIDER -A- MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 01269 SCHNEIDER, ERNEST MINERVA-ROCKDALE PRICE OPERATING, LLC 02596 SCHNEIDER, GEORGE P. FAIRFIELD CALK, ROGER D. 07484 SCHNEIDER, HELEN MARCELINA CREEK (AUSTIN CHALK) TEXAS, LES & CO. 12025


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SCHNEIDER, KASEY LA VERNIA PRODUCTION RESOURCES, INC. 19655 SCHNEIDER,F.H.J. LARREMORE NETWORK SYSTEMS OGP CORP. 00814 SCHNITZ, ELAINE LA VERNIA DONOCO OIL COMPANY 08557 SCHNITZ, HARLEY D. LA VERNIA THREE J ENERGY, INC. 02176 SCHOELLER, KATE WILDCAT OILTON RESOURCES, INC. 14585 SCHOMBURG UNIT PEACH CREEK (BUDA) ADAIR & BALLINGER PETRO., INC. 12097 SCHORP EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 15754 SCHORP EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 18560 SCHORP 'A' EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 18077 SCHORP 'B' EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 19801 SCHORP 301 EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 19741 SCHORP-WHITE RANCH, LTD. BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18303 SCHORP-WHITE RANCH, LTD. 12H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19115 SCHORP-WHITE RANCH, LTD. 13H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19116 SCHORP-WHITE RANCH, LTD. 14H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19117 SCHORP-WHITE RANCH, LTD. 15H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19119 SCHORP-WHITE RANCH, LTD. 16H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19118 SCHORP, FRANK EST. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 12672 SCHORSCH "A" JOURDANTON VIRTEX OPERATING COMPANY, INC. 14801 SCHORSCH, HENRY JOURDANTON (CARRIZO SAND) MILLER, W. C. OPERATING COMPANY 00755 SCHOTT BEAR CREEK P.S.N. PETROLEUM, INC. 13689 SCHRADER-THIEDE PEACH CREEK (AUSTIN CHALK) PENN VIRGINIA OIL & GAS, L.P. 12948 SCHRAFFL LA VERNIA HOERMANN, S. E. 00848 SCHRAUB, ED. LA VERNIA ALCORN RESOURCES, LLC 00889 SCHROEDER BUCHANAN RED SHELL INC 00136 SCHROEDER W. P. HOLLOWAY (NAVARRO) SCHROEDER OIL PROPERTIES 09456 SCHROEDER-CHAPMAN UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15555 SCHROEDER-MEDLEN BUCHANAN YNEW CORPORATION 12082 SCHUBERT, A. H. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01102 SCHUCH-KINGSBERY BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 18044 SCHUCHARDT, ALBERT PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 06480 SCHUELING, AUGUST TAYLOR-INA FASELER, HERB 10066 SCHULTEA MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 18391 SCHULZE GIDDINGS (AUSTIN CHALK-1) BYNG ENERGY GROUP, INC. 10293 SCHULZE-SCOTT A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16405 SCHULZE-SCOTT B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18050 SCHULZE-SCOTT C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16961 SCHULZE-WATTS UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 18083 SCHULZE, WALTER J. PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 13170 SCHUMANN, A. O. WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01772 SCHUMANN, A. O. WEIGANG, WEST (CARRIZO) ACOCK/ANAQUA OPERATING CO., LP 15224 SCHUMANN, H. A. WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01773 SCHUMANN, H. A. -B- WEIGANG ACOCK/ANAQUA OPERATING CO., LP 14240 SCHUPP DAVIS EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17105 SCHWAB BEAR CREEK ACTIVA RESOURCES, LLC 18097 SCHWAMP MINERVA-ROCKDALE TRUSTAR OPERATING COMPANY INC. 16359 SCHWEERS, M. F. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01714 SCHWOPE LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15945 SCHWOPE NORTH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17317 SCHWOPE SOUTH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16870 SCOGGIN, W.B. ET AL FAIRFIELD GREAT PLAINS RESOURCES, INC. 07168


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SCOTT MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04391 SCOTT FOUNDATION CAMPANA, SOUTH CIMARRON ENGINEERING, LLC 13963 SCOTT FOUNDATION CAMPANA, SOUTH (CHERNOSKY) CIMARRON ENGINEERING, LLC 13949 SCOTT FOUNDATION CAMPANA, S. (GOVT. WELLS SD.) CIMARRON ENGINEERING, LLC 13853 SCOTT SCHULZE EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16049 SCOTT-WILKINSON J UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16396 SCOTT-WILKINSON K UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18117 SCOTT-WILKINSON L UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18121 SCOTT-WILKINSON M UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18425 SCOTT-WILKINSON N UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18120 SCOTT-WILKINSON O UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18118 SCOTT-WILKINSON P UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18556 SCOTT-WILKINSON Q UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17302 SCOTT-WILKINSON R UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18554 SCOTT-WILKINSON S UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18119 SCOTT, D. A. MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04269 SCOTT, DAVE ET AL MILBUR (NAVARRO) SELLERS LEASE SERVICE, INC. 04412 SCREAMING EAGLE EAGLEVILLE (EAGLE FORD-1) CLEANTEX OILFIELD SERVICES, LLC 16422 SCREAMING EAGLE B EAGLEVILLE (EAGLE FORD-1) CHURCHILL OPERATING, LLC 17965 SCREAMING EAGLE B6 EAGLEVILLE (EAGLE FORD-1) CHURCHILL OPERATING, LLC 19860 SCULL LA VERNIA FAR, INC. 00877 SCULL-SHAW ET AL UNIT LA VERNIA (AUSTIN CHALK) OFFSPRING WELL SALVAGE 13524 SCULL, ALICE WARREN LA VERNIA ELAM OIL COMPANY LLC 02284 SCULL, ALICE WARREN LA VERNIA KOCH, I. ERNEST 00922 SCULL, C. E. LA VERNIA J.A.G. OIL & GAS 09577 SCULL, C. E. LA VERNIA STELLER ENERGY & INVESTMENT CORP 00878 SCULL, C. E. EST., DR. LA VERNIA ELAM OIL COMPANY LLC 00911 SCULL, C. E. JR. LA VERNIA ELAM OIL COMPANY LLC 05939 SCULL, C. E. JR. -B- LA VERNIA ELAM OIL COMPANY LLC 09886 SCWJ ALLOCATION #5 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19420 SEAGO MINERVA-ROCKDALE DOUBLE DEUCE OPERATING 09779 SEAHORN, LOTTIE KAYE (NAVARRO) CALTEX ENERGY CO. 02095 SEAL LEHMAN A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17040 SEAL-LEHMAN B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17049 SEAL-PERRIGO ALLOC. A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19314 SEAL-SOTO ALLOCATION A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19053 SEAL-SOTO ALLOCATION B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19030 SEAL-SOTO ALLOCATION C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19029 SEAL-SOTO ALLOCATION D EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19054 SEAL-SOTO ALLOCATION E EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19055 SEEWALD EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16371 SEFCIK, MRS. V. LAGRONE CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 04436 SEFFEL SOMERSET SEAGULL OPERATING CO., INC. 11215 SEFFEL -A- SOMERSET SEAGULL OPERATING CO., INC. 11217 SEGGERN THRALL THRALL OPERATING COMPANY, INC. 04930 SEGUIN RANCH PARTNERSHIP GUADALUPE BEND (AUSTIN CHALK) P.S.N. PETROLEUM, INC. 13772 SEGURA MONKSFIELD (350 SAND) R.D. OIL COMPANY 08743 SEIDEL EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17043 SEIDEL-GONZALEZ EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17044 SEIDEL, H. SOMERSET PETROSAURUS, INC. 10847 SEIFERT, MARVIN LEMING (2934 SAND) GINCO OPERATING CO. 07698


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SEIFFERT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17946 SEILER, LEE ROY PALMER (POTH-B) LA VERNIA OIL 07330 SEIVERS, W. A. LULING-BRANYON OCCIDENTAL ENERGY COMPANY, INC. 03366 SEKULA A EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16672 SEKULA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17073 SELMAN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17424 SELZER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18037 SEQUOIA B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19664 SEQUOIA C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19686 SEQUOIA D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19548 SEQUOIA L EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19982 SEQUOIA M EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19985 SEQUOIA N EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19986 SERENA RANCH HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 18614 SES FRIO SWD PEARSALL (OLMOS -A-) SELECT ENERGY SERVICES, LLC 15842 SHAAF-MOSLEY UNIT MILANO (GEORGETOWN) PEMBERTON, W. C. OIL CO., INC. 10541 SHACKELFORD BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 18814 SHADOW PEARSALL (AUSTIN CHALK) COX & COX PRODUCTION CO. 12428 SHADROCK, H. B. FAIRFIELD CIVRON PETROLEUM RES., LLC 10481 SHAMROCK, H. H. MINERVA-ROCKDALE FULLSPIKE ENERGY LLC 01191 SHANKLE PEARSALL (AUSTIN CHALK) FRIO OIL & GAS, LTD. 13275 SHANKLIN LEASE SPILLER EAGLE FORD OIL CO., INC. 02928 SHANKLIN, H. S. SPILLER DELRAY OIL, INC. 01953 SHANKLIN, HARVEY S. SPILLER PRONTO SERVICES 01686 SHANKLIN, SOULI WILDCAT MEGAWEST ENERGY TEXAS CORP. 14957 SHANKLIN, W. R. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01103 SHANKLIN, W. R. "P" LULING-BRANYON ENHANCED RS, INC. 08430 SHANKLIN, W.R. LULING-BRANYON (1700) TEXAS PETROLEUM INVESTMENT CO. 11508 SHANKLIN, W.R. SPILLER EAGLE FORD OIL CO., INC. 07917 SHANNON B PEARSALL (AUSTIN CHALK) DRISCOLL S.W.D. INC. 12494 SHANNON EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16859 SHANNON HOPE WILDCAT SED ENERGY INC. 19516 SHANNON, P. A.W.P. (OLMOS) TREK RESOURCES, INC. 09772 SHAPER SOMERSET GREAT PLAINS RESOURCES, INC. 11058 SHARON T SOMERSET PETRO-TEX ENERGY & EXPL.CO.,INC. 12245 SHARPTAIL A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18195 SHARPTAIL B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18185 SHAW SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 08408 SHAW SOMERSET SEAGULL OPERATING CO., INC. 10883 SHAW -A- SOMERSET SEAGULL OPERATING CO., INC. 10885 SHAW, ROBERT SOMERSET CALK OIL COMPANY 11352 SHAW, ROBERT SOMERSET PARKER, G.R. COMPANY, INC 10822 SHAW, ROBERT -AAA- SOMERSET BETA OIL CORPORATION 11760 SHAW, ROBERT A SOMERSET PRODUCTION RESOURCES, INC. 11758 SHAW, ROBERT B SOMERSET PRODUCTION RESOURCES, INC. 11721 SHAW, ROBERT C SOMERSET PRODUCTION RESOURCES, INC. 11179 SHEARER, J. M. JR. (MIT) PEARSALL (AUSTIN CHALK) FORTUNE OPERATING, INC. 13051 SHEARRER UNIT EAGLEVILLE (EAGLE FORD-1) CM TX PRODUCTION, LLC 16833 SHEDROCK, WALTER LA VERNIA TANGLEHEAD OPERATING, LLC 11545 SHEELEY, JOHN LULING-BRANYON GINCO OPERATING CO. 03770 SHEELEY, JOHN LULING-BRANYON M & S RESOURCES,LLC 15259


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SHEEPFOOT 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18545 SHEFFIELD RANCH A WEINERT (BUDA) VENADO OPERATING COMPANY LLC 16325 SHELBY C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18426 SHELBY, L. UNIT GUADALUPE BEND (AUSTIN CHALK) LT OIL LLC 12617 SHELTON CHRISTIAN (6800) D. SHEL OIL, INC. 06531 SHELTON -A- MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 01237 SHELTON, HOWARD PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 04608 SHELTON, J. W. MINERVA-ROCKDALE ACE FIELD SERVICES, INC. 03663 SHENKIR EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 18126 SHENKIR, H. A.W.P. (OLMOS) XTO ENERGY INC. 09228 SHENKIR, H. -A- A.W.P. (OLMOS) XTO ENERGY INC. 10539 SHEPARD, H. L. MINERVA-ROCKDALE SMITH, L C PRODUCTION 03562 SHERWOOD SOMERSET MORE TEXAS OIL 11629 SHINER HEIRS "A" PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 13387 SHINER HEIRS SWD PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14712 SHINER RANCH BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19275 SHINER RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15849 SHINER RANCH PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 12693 SHINER RANCH PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 04933 SHINER RANCH PEARSALL (BUDA LIME) PERDIDO ENERGY, LLC 15878 SHINER RANCH -A- PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 04702 SHINER RANCH -B- PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 04721 SHINER RANCH -B- PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14370 SHINER RANCH -B- PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 14962 SHINER RANCH -C- PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 11582 SHINER RANCH "A" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05726 SHINER RANCH "A" PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 14890 SHINER RANCH 101 PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13806 SHINER RANCH 8 PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13807 SHINER RANCH-S HUNTER SA 1 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 19905 SHINER RANCH-S HUNTER SA 2 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 19902 SHINER-MORALES PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 12486 SHINING STAR RANCH EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15346 SHIRE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18408 SHIRLEY ZAIONTZ EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16460 SHK UNIT AMMANN (BUDA) MURPHY EXPL. & PROD. CO. - USA 18198 SHOFNER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18292 SHOOK CELESTE-FAY (OLMOS 3-C) TEXOKAN OPERATING, INC. 14524 SHOOK PEARSALL (AUSTIN CHALK) EL TORO RESOURCES LLC 14714 SHOOK EFS BRISCOE RANCH (EAGLEFORD) ATLAS OPERATING LLC 15493 SHORT EAGLEVILLE (EAGLE FORD-1) LEWIS PETRO PROPERTIES, INC. 17758 SHOVELER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17981 SHOWN, GUY PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 05020 SHOWN, W. GUY JR. PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 12337 SHUHART-MUELLER ET AL UNIT LA VERNIA (AUSTIN CHALK) OFFSPRING WELL SALVAGE 13579 SHUHART, D. V. JR. LA VERNIA (AUSTIN CHALK CREVICE) OFFSPRING WELL SALVAGE 13128 SHULLANBERGER TAYLOR-INA BLACKBIRD OIL & GAS, LLC. 08449 SHUT EYE UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS OPERATING LLC 19098 SIBLEY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18367 SIDDONS OL CARRIZO SILVERBOW RESOURCES OPER, LLC 15966 SIEGELE EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17266


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SIEVERS, W.A. LULING-BRANYON E & W OIL, INC. 05096 SIKA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15763 SILVA PEARSALL (AUSTIN CHALK) KIDD PRODUCTION CO. 08526 SILVA -C- SOMERSET EMERALD BAY ENERGY, INC. 11166 SILVA -D- SOMERSET GREAT PLAINS RESOURCES, INC. 11192 SILVA UNIT DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16555 SILVERADO EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17843 SILVERADO RANCH MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16485 SILVERBRITE A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19834 SILVERBRITE B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19840 SILVERBRITE C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19836 SILVERBRITE D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19837 SIMMONS SUBDIVISION UNIT EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 16637 SIMMONS, CELINE GALBA (ESCONDIDA -B-) ATASCOSA EXPLORATION, LLC 15016 SIMMONS, IKE STULTING SELLERS LEASE SERVICE, INC. 01704 SIMMONS, L.R. CARRIZO, W (OLMOS) EAGLE ENERGY RESOURCES, LLC 10424 SIMMONS, LEROY MINERVA-ROCKDALE ANACACHO RESOURCES, INC. 10422 SIMONS-WEST MASSIE WEST (PALUXY) RESERVOIR ENERGY, LLC 15031 SIMS, FRANK L. PLEASANTON, S. (CARRIZO SAND) BOMAR RESOURCES, INC. 09867 SINGER, STEVEN DALE-MCBRIDE MEB, LLC 07686 SISTER SUE PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 13003 SIVERT VELMA (ESCONDID0) EDCO PRODUCTION INC 06330 SJM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16749 SJW EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15768 SKEETER UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 17006 SKINNER, W. I. BULLOH (POTH) ERNEST OPERATING COMPANY 09433 SKLOSS, EMIL -SWD- PRUSKE (BUDA) 2 D OIL & GAS LLC 08634 SKROBARCEK, P. J. -B- LA VERNIA DOEGE, DONALD 04740 SKROBARCEK, P.J. LA VERNIA DOEGE, DONALD 00915 SKYE UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 19525 SLADEK, A. NOACK MAGNUM OILFIELD SERVICES LLC 01292 SLADEK, EUGENE NOACK MAGNUM OILFIELD SERVICES LLC 01290 SLOT WILDCAT SCHLUMBERGER TECHNOLOGY CORP. 15105 SLOVER-BEEVER UNIT PEARSALL (AUSTIN CHALK) D. AND Y. YUNK PRODUCTIONS 06481 SLUDER, J. -B- LA VERNIA RAMPAGE EXPLORATION, INC. 07789 SLUDER, JAMES LA VERNIA RAMPAGE EXPLORATION, INC. 07115 SLUDER, JAMES -A- LA VERNIA RAMPAGE EXPLORATION, INC. 07222 SLYTHERIN A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19528 SLYTHERIN B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19584 SLYTHERIN C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19576 SLYTHERIN D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19589 SMART UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16960 SMELLEY, J. W. CROWN, E. (NAVARRO) OVERSTREET, JAMIE L 00332 SMITH WILDCAT DORRIS PETROLEUM, INC. 12635 SMITH (R) FAIRFIELD DRACHEN OIL COMPANY 14478 SMITH -A- BEBE (AUSTIN CHALK) GALILEE OIL INVESTMENTS LLC 07041 SMITH -A- DUNLAP AUSTIN OPERATING, LLC. 08764 SMITH A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16388 SMITH B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16389 SMITH B UNIT SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15173 SMITH HEIRS SALT FLAT NORTH SOUTH OIL, LLC 14829


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SMITH HEIRS SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 14820 SMITH NORTHCUTT SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15431 SMITH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16024 SMITH UNIT SALT FLAT, WEST T. A. W. COMPANY 08305 SMITH UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16893 SMITH-EHLINGER KYOTE GINCO OPERATING CO. 09392 SMITH-KNANDEL 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17046 SMITH-TINSLEY 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17054 SMITH-WEST UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17034 SMITH, C. -A- SALT FLAT GUINN OIL COMPANY 01529 SMITH, C. -B- SALT FLAT GUINN OIL COMPANY 01530 SMITH, C. "B" SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 14866 SMITH, COPE FAIRFIELD CRYSTAL RESOURCES, INC 02136 SMITH, E. E. FIRST SHOT (AUSTIN CHALK) CLARON CORPORATION 13667 SMITH, ET AL EL VIEJO (SERPENTINE) HANCORP, INC. 12067 SMITH, GUY MUIL (QUEEN CITY SAND) WEEKS, C. W. 01278 SMITH, HORACE -A- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00865 SMITH, HORACE -B- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 01844 SMITH, J. -B- SALT FLAT B. J. P. OPERATING 01517 SMITH, JOEY WILDCAT RILEY EXPLORATION, LLC 15810 SMITH, JOEY PEARSALL (AUSTIN CHALK) 1776 ENERGY OPERATORS, LLC 12585 SMITH, LEROY LA VERNIA (AUSTIN CHALK CREVICE) MIDSTATES CORPORATION 10254 SMITH, LUTHER LA VERNIA RAINER ENERGY, INC. 00827 SMITH, ORTELL FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 15285 SMITH, POWIE LA VERNIA VILLARREAL, VICTOR P. 00925 SMITH, R.L. SALT FLAT EAGLE FORD OIL CO., INC. 07869 SMITH, W. HRS. SALT FLAT NORTH SOUTH OIL, LLC 01508 SMOKEY CLARK MILANO, EAST (BUDA) VICEROY PETROLEUM, LP 18783 SMOTHERS-GONZALES SOMERSET GREAT PLAINS RESOURCES, INC. 10911 SMR JV EF EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 15843 SNAKE EYES UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS OPERATING LLC 17582 SNEED BUCHANAN X STONE ENERGY LLC. 03131 SNEED -A- BUCHANAN RED SHELL INC 13662 SNOGA MARCELINA CREEK (AUSTIN CHALK) DOMINION PRODUCTION COMPANY, LLC 15232 SNOGA MCCLAIN (BUDA) EXXCEL OPERATING COMPANY 05405 SNOOTS PRUE RANCH (ANACACHO) LP OPERATING, LLC 19772 SNOW UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17291 SNOWDEN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17627 SNOWDEN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17321 SNOWDEN UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17629 SNOWFLAKE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18423 SNOWMASS DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16524 SNOWMASS HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19717 SNOWMASS HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19757 SNOWMASS HC7 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19708 SNOWMASS HC8 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19709 SNOWMASS UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17399 SO. TEX. SYNDICATE LEASE #39 WASHBURN RANCH,W.(WILCX 5100,W.) PYLE PETROLEUM, INC. 03947 SO. TEXAS SYNDICATE -A- BIG MULE (5500 SAND) TRACKER OIL & GAS, INC. 08894 SO. TEXAS SYNDICATE #39 WASHBURN RANCH (5500 SD. W) PYLE PETROLEUM, INC. 14348 SOCKEYE A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19820


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SOCKEYE B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19821 SOCKEYE C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19822 SOCKEYE D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19823 SOCKEYE E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19824 SOECHTING DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16521 SOECHTING STATE HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19417 SOECHTING STATE HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19423 SOECHTING STATE UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16623 SOECHTING UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16502 SOECHTING UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16615 SOECHTING UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16624 SOLA VACA NORTE BRISCOE RANCH (EAGLEFORD) U.S. ENERGY DEVELOPMENT CORP 19798 SOLANSKY PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16185 SOLIZ BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 16585 SOMERSET BUILDERS TAYLOR UNIT SOMERSET 3-L DRILLING 03452 SOMMER, O. A. /100AC./ LA VERNIA DOEGE, DONALD 03261 SOUTH PENA CREEK UNIT PENA CREEK (SAN MIGUEL 3RD) FLINT OAK ENERGY, LLC 10690 SOUTH SPUR B BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19705 SOUTH SPUR RANCH BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19410 SOUTH SPUR STATE BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 15207 SOUTH SPUR UNIT B BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19301 SOUTH TEXAS SYNDICATE BIG MULE (5500 SAND) HOUSTON GULF ENERGY CORPORATION 14907 SOUTH TEXAS SYNDICATE JACK FROST (CROCKETT) AMERICAN PATRIOT OPERATING CORP. 03224 SOUTH TEXAS SYNDICATE RODRIQUEZ NORTH (SHALLOW) ESTA COMPANY, INC. 07837 SOUTH TEXAS SYNDICATE WASHBURN RANCH (WILCOX 5200) TRACKER OIL & GAS, INC. 08600 SOUTH TEXAS SYNDICATE WASHBURN RANCH (5450) OILTON RESOURCES, INC. 04191 SOUTH TEXAS SYNDICATE WASHBURN RANCH,W. (WILCOX 5330W) TRACKER OIL & GAS, INC. 09024 SOUTH TEXAS SYNDICATE -A- GREEN BRANCH TERRAFINA ENERGY, LLC 14547 SOUTH TEXAS SYNDICATE -A- GREEN BRANCH (QUEEN CITY) TERRAFINA ENERGY, LLC 06497 SOUTH TEXAS SYNDICATE -A- GREEN BRANCH (4600) TERRAFINA ENERGY, LLC 06008 SOUTH TEXAS SYNDICATE -A- GREEN BRANCH (5500) TERRAFINA ENERGY, LLC 14577 SOUTH TEXAS SYNDICATE -A- WASHBURN, EAST (4600) BUFFALO OIL CORP. 07066 SOUTH TEXAS SYNDICATE -B- CAMARON RANCH (QUEEN CITY) TERRAFINA ENERGY, LLC 04971 SOUTH TEXAS SYNDICATE -B- JOURDANTON (SPARTA SAND) TERRAFINA ENERGY, LLC 14580 SOUTH TEXAS SYNDICATE -B- LITTLE ALAMO TERRAFINA ENERGY, LLC 03694 SOUTH TEXAS SYNDICATE -C- GREEN BRANCH (4600) TERRAFINA ENERGY, LLC 09882 SOUTH TEXAS SYNDICATE -113- WASHBURN RANCH, WEST (5450) TRACKER OIL & GAS, INC. 08450 SOUTH TEXAS SYNDICATE -490 TELEPHONE POST (5450 SAND) TRACKER OIL & GAS, INC. 10437 SOUTHERN HUNTER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15278 SOUTHERN HUNTER-AMBER(SA) UNIT 1 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 19299 SOUTHERN HUNTER-AMBER(SA) UNIT 2 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 19300 SOUTHERN PACIFIC CO. SALT FLAT M & S RESOURCES,LLC 03172 SOVEIDA-OBREGON PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12876 SPAHN FARMS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15376 SPAHNMAN UNIT FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 16212 SPANISH EYES UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS OPERATING LLC 17721 SPARKS -A- SOMERSET PAISANO PRODUCTION, INC. 10757 SPARKS, CECIL SOMERSET PAISANO PRODUCTION, INC. 11441 SPARKS, CECIL R. ET UX SOMERSET RAINER ENERGY, INC. 10816 SPAULDING, J. R. MINERVA-ROCKDALE ACE FIELD SERVICES, INC. 09064 SPEAR POINT 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18775


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SPEARS SOMERSET CIVRON PETROLEUM RES., LLC 11563 SPEER UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14881 SPENCER MINERVA-ROCKDALE TESUQUE OIL & GAS LLC 18836 SPENCER WSW WILDCAT EARTHSTONE OPERATING, LLC 16378 SPENCER, D. D. SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 07016 SPICE HOSTETTER (ARGO) KEBO OIL & GAS, INC. 11780 SPIECKERMANN, ALMA PILGRIM (AUSTIN CHALK) ZACHRY EXPLORATION, INC. 12077 SPINACH ELAINE UNIT SPINACH (ELAINE) RICKAWAY ENERGY, CORP. 10149 SPITFIRE 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18738 SPJ TRUST WILDCAT PRODUCTION RESOURCES, INC. 19996 SPR UNIT A HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 17594 SPR-PRIME UNIT A HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 17344 SPR-PRIME UNIT B HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 18282 SPRADLIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16797 SPRAGUE, DELIA DUNLAP KIDD PRODUCTION CO. 11512 SPRINGBOK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17499 SPRINGS-PATTESON (AW1) EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18163 SPRINGS-PATTESON (AW2) EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18173 SPRINGS-ROWELL (AW1) EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18211 SPRINGS-ROWELL (AW2) EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18169 SPRINGS, GILBERT F. LA VERNIA LOTT PRODUCTION COMPANY 06055 SPRINGSTEEN D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19478 SPRINGSTEEN E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19803 SPRINGSTEEN F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19833 SP5 A.W.P. (OLMOS) BLACKBRUSH O & G, LLC 17337 SP5 AW A A.W.P. (OLMOS) BLACKBRUSH O & G, LLC 18107 SQUARE, BLANCH SALT FLAT W.W. ENERGY 03133 SRALLA UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16001 SSU ALLOCATION #1 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18757 SSU ALLOCATION #2 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18758 SSU ALLOCATION #3 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18693 SSU ALLOCATION #4 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 18688 ST JOHN SOMERSET GREAT PLAINS RESOURCES, INC. 11148 ST JOHN-ROD UNIT DIM BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 18132 ST. JOHN, S. SOMERSET GREAT PLAINS RESOURCES, INC. 01643 ST. LOUIS UNION TRUST CO. RODRIQUEZ (SHALLOW) BOOMERANG OIL & GAS LLC 01434 ST. NATL. BK. OF CORPUS CHRISTI CHARLOTTE (NAVARRO) FREEMAN, J. L., OPER. 03320 STACY NIXON ALCOR ENERGY, INC. 12605 STACY PEARSALL (AUSTIN CHALK) FINALY RESOURCES LLC 07643 STACY & SONS ET AL UNIT PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13547 STACY, W.E. & SON PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 12523 STAFFORD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15894 STAFFORD-KERCHO JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 18677 STAIR-PROCTOR UNIT 1 LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03685 STAIR, O. F. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01105 STAIR, O.F. LULING-BRANYON (1700) TEXAS PETROLEUM INVESTMENT CO. 10171 STANDIFER UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17305 STANDIFER-STONE, M.L. PEARSALL (AUSTIN CHALK) RILEY EXPLORATION, LLC 12870 STANDIFER, DOYLE EST. PEARSALL (AUSTIN CHALK) BOTASCH OPERATING, LLC 13002 STANDIFER, E. T. BIG WELLS, E. (UPPER SAN MIGUEL) KEY ENERGY SERVICES, LLC 11816 STANFIELD SOMERSET SEAGULL OPERATING CO., INC. 03389


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ STANFIELD, ETAL, UNIT SALT FLAT OFFSPRING WELL SALVAGE 03075 STANGER-TEST MINERVA-ROCKDALE STANGER, F.H. SHANE 19543 STANISLAW, JOE ESTATE CHEROKEE (NAVARRO) CXL ENERGY LLC 09296 STAPP, W.E. JOURDANTON (RECKLAW) RALYN CORP. 08011 STAR FIRE RANCH EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 18763 STARBOARD BIG FOOT (OLMOS D-3 SAND) CREATIVE OIL AND GAS OP II, LLC 16063 STARLIGHT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17922 STARR-PEP LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 04874 STARR, VALLEN LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 03699 STARR, VAUEN -A- LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 04011 STARRAK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17104 STATE SPILLER DELRAY OIL, INC. 03174 STATE OF TEXAS & MILLS, L. H. KAYE (NAVARRO) PRODUCTION RESOURCES, INC. 02171 STATON, C.D. TENNEY CREEK RED SHELL INC 09408 STE A.W.P. (OLMOS) BLACKBRUSH O & G, LLC 18328 STEDMAN, H.H. MINERVA-ROCKDALE STEDMAN OIL & GAS CO. 05704 STEELE SOMERSET BEAULAH LAND OIL COMPANY 10891 STEELHEAD A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 20015 STEEN SCRUGGS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16030 STEEN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15480 STEGLICH, J. C. SERBIN (WILCOX) SHELDON RESOURCES, L.P. 11971 STEIN UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18500 STEIN UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18480 STEINLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17446 STEINLE-PHILLIPS UNIT JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 17571 STEINLE, A. N. -B- CHARLOTTE (NAVARRO) ROLAND OIL COMPANY 03307 STEINLE, LEON JOURDANTON VIRTEX OPERATING COMPANY, INC. 13470 STELLA PENN HOSTETTER, N. (GOV'T. WELLS,3RD) BLACKBEARD OPERATING, LLC 17950 STEPAN KOVAR (NAVARRO) CENTEX DEVELOPMENT 06301 STEPHEN YBAR EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18405 STEPHENSON LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16699 STEPHENSON UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17443 STEPHENSON,MARGARET PEARSALL (AUSTIN CHALK) CORE E & P CORP. 12167 STEUBING UNIT B BRISCOE RANCH (EAGLEFORD) EL TORO RESOURCES LLC 18876 STEVENS, R. W. SOMERSET PETROSAURUS, INC. 05953 STEWART PEARSALL (AUSTIN CHALK) COCKRELL PRODUCTION CO., INC. 15635 STEWART - MICHAEL UNIT PEARSALL (AUSTIN CHALK) COCKRELL PRODUCTION CO., INC. 16563 STEWART - MICHAEL 2H UNIT PEARSALL (AUSTIN CHALK) COCKRELL PRODUCTION CO., INC. 16397 STEWART-FINLEY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15686 STEWART-GIESE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15600 STEWART-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16385 STEWART-MENEFEE UNIT III PEARSALL (AUSTIN CHALK) CALTEX ENERGY CO. 13317 STEWART-MENEFEE UNIT IV PEARSALL (AUSTIN CHALK) CALTEX ENERGY CO. 12638 STEWART, C. SUTIL (BUDA) REAVIS, TOMMY 08142 STEWART, MINNIE SCOTTY (BARTOSH SAND) GREENWERKS OUTDOOR SERVICES LLC 01572 STIEGLER, HAROLD TAYLOR-INA S.O.C. INVESTORS, INC. 08445 STIEREN, GEORGIA LA VERNIA ALCORN RESOURCES, LLC 08417 STILES, H. A. THRALL THRALL OPERATING COMPANY, INC. 01739 STILLS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18700 STING RAY A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16983 STOBAUGH-DAWE EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17121


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ STOBAUGH-SMITH EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17122 STOCK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17496 STOCK, DORIS LA VERNIA THREE J ENERGY, INC. 06519 STOCKARD SOMERSET SST ENERGY CO., LLC 10864 STOCKHORST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17944 STOELTJE MARCELINA CREEK (AUSTIN CHALK) CEI OPERATING LLC 15196 STOKES, O.K. SOMERSET MAGNUM OILFIELD SERVICES LLC 11292 STOLLE ET AL GAS UNIT FASHING (EDWARDS LIME -A-) XTO ENERGY INC. 14493 STONE EL INDIO, N.(OLMOS) WILLIAMSON OPERATING CO. 11829 STONE RANCH WILDCAT JOINT RESOURCES COMPANY 14774 STONE RANCH-BADGER BRISCOE RANCH (EAGLEFORD) VISION STONE PETROLEUM, LLC 18325 STONE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18460 STONE UNIT EAGLEVILLE (EAGLE FORD-1) INPEX EAGLE FORD, LLC 16686 STONE-SCHUBLE EAGLEVILLE (EAGLE FORD-1) INPEX EAGLE FORD, LLC 18170 STONE-SCHUBLE A EAGLEVILLE (EAGLE FORD-1) INPEX EAGLE FORD, LLC 19706 STONEGATE RANCH SWD BRISCOE RANCH (EAGLEFORD) CRIMSON ENERGY PARTNERS IV, LLC 18131 STOPPELBERG WILDCAT CREATIVE OIL AND GAS OP II, LLC 15066 STOREY EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16156 STOREY STOREY, S. (WILCOX 5450) ESCONDIDO RESOURCES OPER CO, LLC 15001 STOREY & REED STOREY, S. (WILCOX 5450) OILTON RESOURCES, INC. 13854 STOREY B UNIT TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 18505 STOREY NO 1 TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 14953 STOREY NO 2 TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 18503 STOREY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18010 STOREY UNIT A TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 17929 STOREY UNIT B TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 18416 STOREY-PEEBLES UNIT TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 17998 STOREY-REED EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15439 STOREY, H. D. STOREY (5250) VIRTEX OPERATING COMPANY, INC. 04231 STOREY, H. D. STOREY (5600) VIRTEX OPERATING COMPANY, INC. 04244 STOREY, HELEN CARRIZO BUFFALO OIL CORP. 12244 STORM WRK (JACKSON 2250) NEWMAN OPERATING COMPANY 14308 STORY RANCH WILDCAT STORY NRG LLC 16879 STORY RANCH EAGLEVILLE (EAGLE FORD-1) STORY NRG LLC 16448 STORY RANCH 3 EAGLEVILLE (EAGLE FORD-1) STORY NRG LLC 17781 STORY RANCH 4 EAGLEVILLE (EAGLE FORD-1) STORY NRG LLC 17782 STOUP, ESTATE OF THELMA B. FAIRFIELD EXXCEL OPERATING COMPANY 03759 STOUP, H. C. FAIRFIELD DIAMOND TRADING & PIPELINE CORP 02184 STOUP, HUGH C. FAIRFIELD EXXCEL OPERATING COMPANY 06390 STOUT PEARSALL (AUSTIN CHALK) MUELLER EXPLORATION, INC. 15343 STOUT PEARSALL (BUDA, S.) MUELLER EXPLORATION, INC. 17454 STOUT -A- PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 13743 STOUT "A" PEARSALL (AUSTIN CHALK) MUELLER EXPLORATION, INC. 06671 STRAIT PEARSALL (AUSTIN CHALK) STP PRODUCTION, LLC 14494 STRAWBERRY A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19385 STRAWBERRY B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19386 STRAWBERRY C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19587 STRAWBERRY D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19634 STRAWBRIDGE CHEROKEE (AUSTIN CHALK, LO.) SLAWSON EXPLORATION COMPANY, INC 18544 STREETMAN, H. S. LA VERNIA ALCORN RESOURCES, LLC 00869 STREETMAN, H. S. "A" LA VERNIA ALCORN RESOURCES, LLC 00823


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ STRELSKY -33- MINERVA-ROCKDALE PENROD OIL COMPANY OF TEXAS, INC 01218 STREY, E. LA VERNIA PERKINS, EUGENE O. 06506 STREY, ELTON F. LA VERNIA TANGLEHEAD OPERATING, LLC 06335 STROUD LA VERNIA, WEST (AUSTIN CHALK) PULLIN LEASE SERVICE, INC. 13746 STROUD, H. C. SCOTTY (BARTOSH SAND) GREENWERKS OUTDOOR SERVICES LLC 01573 STROUD, W. KAYE (NAVARRO) THREE J ENERGY, INC. 00770 STRUNK ECKERT GINCO OPERATING CO. 00540 STS A.W.P. (OLMOS) BLACKBRUSH O & G, LLC 14821 STS -D- BIG MULE (5500 SAND) F M OIL CO. 08865 STS A - 1391 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 15678 STS A - 692 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 15804 STS AW A A.W.P. (OLMOS) BLACKBRUSH O & G, LLC 18199 STS NORTH UNIT 10 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17706 STS NORTH UNIT 11 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17730 STS NORTH UNIT 12 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17710 STS NORTH UNIT 13 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17658 STS NORTH UNIT 14 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17649 STS NORTH UNIT 15 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17923 STS NORTH UNIT 16 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17993 STS NORTH UNIT 17 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17762 STS NORTH UNIT 18 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17756 STS NORTH UNIT 19 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17857 STS NORTH UNIT 2 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17575 STS NORTH UNIT 20 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 18300 STS NORTH UNIT 21 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 18285 STS NORTH UNIT 22 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 18298 STS NORTH UNIT 23 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 18493 STS NORTH UNIT 3 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17959 STS NORTH UNIT 4 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17755 STS NORTH UNIT 5 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17289 STS NORTH UNIT 6 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17297 STS NORTH UNIT 7 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17778 STS NORTH UNIT 8 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17414 STS NORTH UNIT 9 EAGLEVILLE (EAGLE FORD-1) CASTLEROCK OPERATING, LLC 17576 STS UNIT A.W.P. (OLMOS) BLACKBRUSH O & G, LLC 16402 STS-E- BIG MULE (5500 SAND) TRACKER OIL & GAS, INC. 09199 STUART-NELSON UNIT SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 07944 STUBBLEFIELD WILDCAT JANCO OPERATING 12457 STUBBLEFIELD SOMERSET GREAT PLAINS RESOURCES, INC. 10809 STUBBLEFIELD SOMERSET GREEN STAR 10756 STUBBLEFIELD-BREAZEALE -A- SOMERSET EISE OIL, INC. 11059 STUBBLEFIELD-BREAZEALE -B- SOMERSET EISE OIL, INC. 11060 STUBBLEFIELD-BREAZEALE -C- SOMERSET EMERALD BAY ENERGY, INC. 11165 STUBBLEFIELD-BREAZEALE -D- SOMERSET EISE OIL, INC. 11257 STUBBLEFIELD-BREAZEALE -F- SOMERSET EISE OIL, INC. 11061 STUBBLEFIELD-BREAZEALE CC SOMERSET EMERALD BAY ENERGY, INC. 11855 STUBBLEFIELD, DAVID C. SOMERSET EISE OIL, INC. 10780 STULTING, N. C. STULTING SELLERS LEASE SERVICE, INC. 01705 STUMBERG ESTATE BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16109 STUMBERG ESTATE UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18892 STUMBERG ESTATE UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18891


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ STUMBERG ESTATE UNIT C BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 19163 STUMBERG ESTATE UNIT D BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 19371 STUMBERG ESTATE UNIT E BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 19156 STUMBERG RANCH BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 15309 STUMBERG RANCH CATARINA MAG (AUSTIN CHALK) TEXOKAN OPERATING, INC. 13518 STUMBERG RANCH UNIT C BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 18657 STUMBERG RANCH UNIT D BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19814 STUMBERG RANCH UNIT E BRISCOE RANCH (EAGLEFORD) SN EF MAVERICK, LLC 19627 STUMBERG STATE DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16252 STUMBERG STATE UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16337 STUMBERG STATE UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16239 STUMBERG 83 SWD BRISCOE RANCH (EAGLEFORD) CHOYA OPERATING, LLC 19733 STUMBERG-KING UNIT BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 18581 STYLES, HERMAN LULING-BRANYON OFFSPRING WELL SALVAGE 07124 STYLES, P. A. LULING-BRANYON SHWJ OIL & GAS CO., INC. 03332 SUGARLAND PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15164 SUGARLAND DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15585 SULAK, T. MINERVA-ROCKDALE CAMINO REAL TECHNOLOGIES INC 08658 SULLIVAN SOUTHTON SULLIVAN, SAMUEL 10555 SULTENFUSS HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19037 SULTENFUSS HC2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19039 SULTENFUSS HC3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19040 SULTENFUSS HC4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19062 SULTENFUSS HC5 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19033 SULTENFUSS HC6 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19041 SULTENFUSS UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16546 SULTENFUSS, LAWRENCE F. GOOD LUCK (SAN MIGUEL) GARDNER OIL & GAS CO. 04241 SUMBERA LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16844 SUMBERA UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16845 SUN MARK EXPLORATION SALT FLAT, WEST CASTILLO OIL COMPANY LLC 07875 SUNFLOWER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16809 SUNSHINE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18900 SUTPHEN, CHARLES M. OIL UNIT FLORESVILLE, S. (AUSTIN CHALK) PLUM OIL & GAS 08122 SUTTON SUSSEX E. CROWN FLOOD UNI CROWN, E. (NAVARRO) ROLAND OIL COMPANY 03387 SUTTON, NELL ESTATE VELMA (ESCONDID0) WSM 09084 SUZANNE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17662 SVOBODA, J.A. DUNLAP EAGLE FORD OIL CO., INC. 09662 SWAIM EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 15429 SWAIM MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15874 SWAIM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15897 SWAIM UNIT I MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15627 SWAIM 58 SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 15172 SWAIM 60 SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 17761 SWAIM-WHEELER-DOUBLE K UNIT SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 15211 SWD #7 O/A SALVAGE DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02982 SWEENEY, CAMILLE PEARSALL (AUSTIN CHALK) U.S.A. PLUGGING COMPANY 13240 SWEENEY, CAMILLE TOUCHSTONE (OLMOS -A-) U.S.A. PLUGGING COMPANY 12964 SWEET UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15349 SWENSON EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 15388 SWENSON KUDU, NORTH (WALES) MANTI OPERATING COMPANY 14843 SWENSON 'A' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16787


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SWENSON 'B' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16966 SWENSON 'C' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 16108 SWENSON, ARTHUR A. KIMBRO ALTEX PETROLEUM, INC. 07114 SWIENTEK, THEODORE CINDY ANN (AUSTIN CHALK, OIL) ALCOR ENERGY, INC. 08401 SWIGART -B- LULING-BRANYON GINCO OPERATING CO. 10567 SWIGART "12" LULING-BRANYON M & S OIL INC. 09156 SWIGART SWD LULING-BRANYON GINCO OPERATING CO. 10598 SWIGART, -E- LULING-BRANYON GINCO OPERATING CO. 11543 SWIGGART, T.E. LULING-BRANYON GINCO OPERATING CO. 08724 SWR A.W.P. (OLMOS) DORADO DRILLING, INC. 14343 SWR "B" A.W.P. (OLMOS) DORADO DRILLING, INC. 14214 SYDNEY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16862 SZALWINSKI UNIT MARCELINA CREEK (AUSTIN CHALK) RECOIL RESOURCES OPERATING, INC. 07028 T CATTLE COMPANY PEARSALL (BUDA, S.) BUFFCO PRODUCTION INC. 19398 T KIRK UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17324 T.R.U. UNIT W.C. FINCH (SIMSBORO 1900) SHELDON RESOURCES, L.P. 12071 TABOR, ELSIE M. SOMERSET WALLIS ENERGY, INC. 10771 TABOR, W. H. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01107 TACO UNIT SOMERSET PAISANO PRODUCTION, INC. 10768 TADLOCK, A. U. -A- DARST CREEK (BUDA) GARRISON LTD. 02823 TADLOCK, A. U. -C- DARST CREEK (BUDA) GARRISON LTD. 02748 TADLOCK, H. H., -B- DARST CREEK (BUDA) DJ EXPLORATION, INC. 02747 TADLOCK, H. H., ETAL DARST CREEK (BUDA) GARRISON LTD. 02720 TAG UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15719 TALBUTT PEARSALL (AUSTIN CHALK) TEXOKAN OPERATING, INC. 12829 TALBUTT TRUST EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15514 TALBUTT TRUST C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17991 TALBUTT UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 17352 TALLEY BIG FOOT CREATIVE OIL AND GAS OP II, LLC 09653 TALLEY DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 06113 TALLEY -B- DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 12285 TALLEY "X" DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 14860 TALLEY-A- DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 12284 TALLEY, E. H. DALE-MCBRIDE HAZELETT OIL, INC. 04103 TALLEY, J. W. NIXON BARON ENERGY INC. 07939 TALLY UNIT FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 14786 TAMPKE, BILL TAYLOR-INA TAMPKE SERVICE CO. 14507 TANGERINE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18702 TARPON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16634 TATE, GORDEN TATE BIG FOOT OILEX INT'L INVESTMENTS, INC. 14093 TAUBER UNIT A DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16375 TAUBER UNIT C DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16639 TAUBER UNIT D DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16588 TAUBER UNIT E DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16490 TAUCH, DAVID R. ET UX WAELDER, SOUTH (ESCONDIDO) PREMIUM EXPLORATION COMPANY 10550 TAYLOR MINERVA-ROCKDALE TEJAS EXPLORATION INC. 09139 TAYLOR SOMERSET RED CHALK RESOURCES LLC 12709 TAYLOR 'V' SOMERSET QUEST RESEARCH & DEV. CORP. 10866 TAYLOR BUTTS UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18324 TAYLOR UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16274 TAYLOR-CARRICO UNIT BRISCOE RANCH (EAGLEFORD) AGERON ENERGY, LLC 19407


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ TAYLOR-KING ANDY BROWN (BUDA) OUTLINE OIL CORP. 12280 TAYLOR/BERRY PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 13272 TAYLOR, H.D. A.W.P. (OLMOS) XTO ENERGY INC. 09248 TAYLOR, KENNETH E. SOMERSET QUEST RESEARCH & DEV. CORP. 03662 TAYLOR, LARRY SALT FLAT B & S OPERATING COMPANY LLC 09179 TE GONZALES SWD PEACH CREEK (AUSTIN CHALK) CWR MANAGEMENT LLC 17306 TE PILGRIM SWD PILGRIM (AUSTIN CHALK) CWR MANAGEMENT LLC 18393 TE YORKTOWN SWD DUBOSE (EDWARDS -A-) GOODNIGHT MIDSTREAM PERMIAN, LLC 17546 TEAGUE UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16935 TEAL -P- A.W.P. (OLMOS) WHITE OAK OPERATING COMPANY LLC 10458 TEAL E EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18399 TEAL MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16557 TEAL RANCH EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 15536 TEAL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17591 TEAL UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18433 TEAL UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18200 TEAL UNIT C EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18179 TEAL UNIT D EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18204 TEAL-HOSKINS A EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 19031 TEAL-HOSKINS B EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 19035 TEAL-HOSKINS EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 19036 TEAM BANK FIRST SHOT (AUSTIN CHALK) CEI OPERATING LLC 13638 TEAS, MITTIE LULING-BRANYON E & W OIL, INC. 01117 TEAS, MITTIE /15.0 ACRES/ LULING-BRANYON AUSTIN OPERATING, LLC. 01116 TEJAS DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16721 TEJAS UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16878 TEMPERO, MABEL ACLETO CREEK (POTH SAND) LORENZ & BOSANKO 09303 TENAMPA FAIRFIELD DRACHEN OIL COMPANY 14583 TENBERG BIRDWELL UNIT JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 18521 TENBERG, G. F. FIVE MILE (WILCOX, UPPER) CENTEX DEVELOPMENT 14878 TERRA LOCUS SERVICE -A- LA VERNIA J.A.G. OIL & GAS 10086 TERRELL, H. A. LULING-BRANYON OILTEX, LLC 03942 TERRY, C.E. MINERVA-ROCKDALE TEJAS EXPLORATION INC. 11963 TEXAS A&M UNIT BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19715 TEXAS CHRISTIAN UNIVERSITY -A- STOREY (5150) BUFFALO OIL CORP. 07441 TEXAS OSAGE ET AL ELAINE (AUSTIN CHALK) WHITE MARLIN OPERATING CO, LLC 17285 TEXAS POWER & LIGHT MINERVA-ROCKDALE PENROD OIL COMPANY OF TEXAS, INC 10435 TEXAS POWER & LIGHT COMPANY MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 07356 TEXAS TEA PILGRIM (AUSTIN CHALK) TEXATRON PETROLEUM LLC 13911 TEXAS TWO STEP EAGLEVILLE (EAGLE FORD-1) MODERN EXPLORATION, INC. 15272 TEXAS-OSAGE LORENZO (AUSTIN CHALK) SANCHEZ OIL & GAS CORPORATION 15116 TEXRON - HOWETT DOS ARROYOS (SAN MIGUEL) TEXRON OPERATING, LLC 17466 TG UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15835 THALMANN BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15289 THALMANN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15501 THAXTON SASPAMCO DIAMONDBACK OIL COMPANY 10085 THE KIRK PLACE MINERVA-ROCKDALE DORADO OFFSHORE, LLC 19973 THELMA BRITE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15691 THERIOT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16606 THETFORD A.W.P. (OLMOS) WHITE OAK OPERATING COMPANY LLC 09921 THIEL MARTIN EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 18559


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ THIEL, C.C. SOMERSET GREAT PLAINS RESOURCES, INC. 11095 THIEL, M.C. SOMERSET GREAT PLAINS RESOURCES, INC. 11204 THIER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16741 THOMAS & WHITTINGTON DUNLAP B. J. P. OPERATING 03615 THOMAS & WHITTINGTON DUNLAP EAGLE FORD OIL CO., INC. 03895 THOMAS & WHITTINGTON -B- DUNLAP B. J. P. OPERATING 00521 THOMAS & WHITTINGTON -D- DUNLAP SHEFTS & SHEFTS, INC. 08064 THOMAS & WHITTINGTON FEE DUNLAP SHEFTS & SHEFTS, INC. 03684 THOMAS CROZIER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16053 THOMAS UNIT BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15452 THOMAS-HARDEMAN LULING-BRANYON AUSTIN OPERATING, LLC. 01025 THOMAS, HILTON O. ACLETO CREEK (POTH B) ALCOR ENERGY, INC. 06973 THOMAS, HILTON O. -B- ACLETO CREEK (POTH C) P.S.N. PETROLEUM, INC. 08263 THOMPSON PEACH CREEK (AUSTIN CHALK) EXPRESS OIL CO. 07118 THOMPSON PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14742 THOMPSON PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 05037 THOMPSON #1 PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 12410 THOMPSON "A" PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 13139 THOMPSON A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17186 THOMPSON B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17405 THOMPSON C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17428 THOMPSON D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17457 THOMPSON RANCH BRISCOE RANCH (EAGLEFORD) ROSEWOOD RESOURCES, INC. 15853 THOMPSON UNIT PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14845 THOMPSON-NICHOLS SOMERSET GREAT PLAINS RESOURCES, INC. 08261 THOMPSON, B.F. PRUITT PEARL, BILL H. PRODUCTIONS, INC. 11649 THOMPSON, C. SPILLER GINCO OPERATING CO. 03501 THOMPSON, C. M. STACY (OLMOS -A-) MAZCO ENERGY LLC 01892 THOMPSON, C. M., -B- STACY (OLMOS -A-) MAZCO ENERGY LLC 03065 THOMPSON, C. S. -A- BIG FOOT MAVERICK ENERGY GROUP, INC. 00107 THOMPSON, C.R. BIG FOOT OILEX INT'L INVESTMENTS, INC. 14061 THOMPSON, C.R. "A" BIG FOOT OILEX INT'L INVESTMENTS, INC. 14062 THOMPSON, C.R. "B" BIG FOOT OILEX INT'L INVESTMENTS, INC. 14063 THOMPSON, C.R. "C" BIG FOOT OILEX INT'L INVESTMENTS, INC. 14064 THOMPSON, C.R. "D" BIG FOOT OILEX INT'L INVESTMENTS, INC. 14065 THOMPSON, CAROLYN A. RONNIE (QUEEN CITY SAND) HINES, ARNOLD L. 11859 THOMPSON, DENNIS BIG FOOT WATSON ENERGY INVESTMENTS, LLC 00108 THOMPSON, F. B. CHARLOTTE (NAVARRO) WSM 03308 THOMPSON, GEORGE LA VERNIA AGAPE ENERGY INC. 04921 THOMPSON, J. C., JR. PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 15243 THOMPSON, JUNE KYOTE GINCO OPERATING CO. 09715 THOMPSON, PATTY UNIT I PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 12579 THOMPSON, WEBB -B- BIG FOOT MAVERICK ENERGY GROUP, INC. 00111 THOMPSON, WEBB -B- BIG FOOT (OLMOS D-3 SAND) DIAMOND ENERGY SERVICES, LP 00123 THOMS MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14402 THOMS -C- MARCELINA CREEK (BUDA) FIRST ROCK, INC. 13517 THORNE, LULA O., EST SOMERSET PETROSAURUS, INC. 03340 THORNHILL UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16651 THORNTON EAGLEVILLE (EAGLE FORD-1) LEWIS PETRO PROPERTIES, INC. 18219 THORNTON FIEDLER BROTHERS LEWIS PETRO PROPERTIES, INC. 09511 THOROGOOD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18261


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ THOROUGHBRED 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18528 THREADGILL L BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 13544 THREADGILL, ETAL MINERVA-ROCKDALE NAVARRO EXPLORATION CO., INC. 03498 THREADGILL, R. V. BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 13307 THREADGILL, R. V. -C- BATEMAN (AUSTIN CHALK) ALL IN ENERGY PRODUCTION, LLP 12227 THREADGILL, R.V. -B- BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 12206 THREADGILL,V. DALE-MCBRIDE R & S OIL PRODUCTION CO. 10205 THUNDER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18936 THURMAN NORTH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15614 THURMAN, A.V. FAIRFIELD GREAT PLAINS RESOURCES, INC. 10218 TIBETAN RED UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18468 TICK, STEVE SOMERSET GREAT PLAINS RESOURCES, INC. 01644 TICK, STEVE SOMERSET PETROSAURUS, INC. 10947 TIDWELL EAST ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16636 TILDEN GPI TILDEN, S. (WILCOX H2S DISPOSAL) ETC TEXAS P/L, LTD 14827 TILDEN HWY 72 EAGLEVILLE (EAGLE FORD-1) EVX MIDSTREAM PARTNERS LLC 17227 TILDEN UNIT EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 19049 TILLER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14461 TILLER #1 PEARSALL (AUSTIN CHALK) HILL PRODUCTION COMPANY NO. 2 11419 TILLER-BRISCOE "D" SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15032 TILLER, D. G. SALT FLAT EAGLE FORD OIL CO., INC. 01462 TILLER, D. G. (SCULLY) SALT FLAT EAGLE FORD OIL CO., INC. 14519 TILLER, D. G. -A- SALT FLAT EAGLE FORD OIL CO., INC. 01463 TILLER, FLOYD SALT FLAT B. J. P. OPERATING 01475 TILLER, FLOYD SALT FLAT STAR OIL, LLC 02968 TILLER, FLOYD -A- SALT FLAT OILTEX, LLC 01488 TILLER, J. B. SALT FLAT DST OIL COMPANY 01498 TILLER, J. B. SALT FLAT JAVELINA OIL & GAS CO. 01485 TILLER, J. B. SALT FLAT OILTEX, LLC 01443 TILLER, J. R. SALT FLAT DST OIL COMPANY 01499 TILLER, J. R. SALT FLAT FLAMINGO OIL & GAS 11747 TILLER, J. R. -C- SALT FLAT OILTEX, LLC 01486 TILLER, J. R., -B- TENNEY CREEK COTTON OIL CO. 03637 TILLER, J.R. SALT FLAT DST OIL COMPANY 11718 TILLER, J.R. -C- SALT FLAT JAVELINA OIL & GAS CO. 14731 TILLER, JOE B., MRS. SALT FLAT W.W. ENERGY 03017 TILLER, L. L. DUNLAP LLT ENERGY, INC. 11950 TILLER, M. SALT FLAT HARDIN ENERGY CO., INC. 01456 TILLER, T. A. SALT FLAT AUSTIN OPERATING, LLC. 01487 TILLER, T. A. SALT FLAT NORTH SOUTH OIL, LLC 14911 TILLER, T. A. SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 14831 TILLER, W. J. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01108 TILLER, W. M. SALT FLAT B. J. P. OPERATING 01489 TILLEY, D. DUNLAP BAIR'S LEASE SERVICE, INC. 03789 TILLY EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19910 TIMMONS BRUSHY CREEK (SERPENTINE) CADDO ENERGY CO., INC. 05301 TINSLEY EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16222 TINSLEY "A" PILGRIM (AUSTIN CHALK) MEXAMERICAN WELL SERVICE CORP. 13442 TINSLEY-BARNETT EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 18062 TINSLEY-BARNETT SMILEY (AUSTIN CHALK) AUTERRA OPERATING, LLC 18099 TINSLEY-COOK 1 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16941


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ TINSLEY-COOK 2 EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16973 TINSLEY-LAWLEY EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16099 TINSLEY-RAEKE EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16245 TINSLEY-VANA EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16174 TINSLEY-WILLIAMS EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 17041 TIRO UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18036 TITZMAN STOCKDALE, S. (AUSTIN CHALK) CALOCO ENERGY, INC. 07504 TITZMAN, AUGUST L. OIL UNIT STOCKDALE, S. (AUSTIN CHALK) PONTIAC OIL, INC. 07248 TITZMAN, TITIAN CINDY ANN (AUSTIN CHALK, OIL) JENEX PETROLEUM CORPORATION 11692 TLAPEK PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14956 TOALSON PEARSALL (AUSTIN CHALK) TRANS-CANADA ENTRPRSES OF TX INC 08326 TOALSON "B" PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 12656 TOALSON "C" PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 12999 TOCQUIGNY EFS BRISCOE RANCH (EAGLEFORD) ATLAS OPERATING LLC 15862 TOCQUIGNY UNIT HUGH FITZSIMMONS (SAN MIGUEL) ATLAS OPERATING LLC 18610 TOCQUIGNY, R.O. PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 12739 TOM EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15898 TOM A UNIT EAGLEVILLE (EAGLE FORD-1) PROTEGE ENERGY III LLC 18094 TOM FAMILY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16478 TOM HANKS EF EAGLEVILLE (EAGLE FORD-1) VERDUN OIL & GAS LLC 16996 TOM UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16023 TOM-SMITH UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17689 TOM-SMITH UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 18809 TOMAHAWK I MCCLAIN (AUSTIN CHALK) TOMAHAWK PETROLEUM 04808 TOMATO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18800 TOMBLIN, R.W. KYOTE CREATIVE OIL AND GAS OP II, LLC 10421 TONDRE, CLINT CHICON LAKE TONDRE, CLINT 00299 TONDRE, OSCAR L. FAIRFIELD CRYSTAL RESOURCES, INC 02440 TORRES, A. SOMERSET PETROSAURUS, INC. 08813 TORRES, M.R. FAIRFIELD GREAT PLAINS RESOURCES, INC. 08415 TORTUGA BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19277 TORTUGA B UNIT PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 12425 TORTUGA C PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 14711 TORTUGA UNIT PEARSALL (AUSTIN CHALK) CONTANGO RESOURCES, INC. 14664 TOWERS DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16662 TOWNS ADDITION UNIT-WATTS SALT FLAT GOODMAN, D. W. 03153 TOWNSEND EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18240 TOWNSEND, M.E. -A- SOMERSET PETROSAURUS, INC. 11132 TOWNSEND, S. G. CROWN, E. (NAVARRO) STARBURST ENERGY, INC. 00334 TRADITIONS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16910 TRAMMELL, H. S. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01110 TRANSUE, JIM LA VERNIA PRODUCTION RESOURCES, INC. 09578 TRAPP BRISCOE "A" TENNEY CREEK IRON ORCHARD OPERATING LLC 03460 TRAPP VAS II SOMERSET FAR, INC. 11622 TRAPP, LOUIS E. JR. SOMERSET GREAT PLAINS RESOURCES, INC. 10870 TRAPPE MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 09692 TRAPPE -A- MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 10112 TRAYLOR NORTH BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15412 TRAYLOR SOUTH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15766 TRAYLOR UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17112 TRAYLOR UNIT ZAV L BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 18230


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ TRAYLOR UNIT ZAV M BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17867 TRAYLOR UNIT ZAV N BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17653 TRAYLOR WEST BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17796 TRAYLOR WEST ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15993 TRAYLOR WEST ZAV G BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17795 TREFF, PAUL STOREY, E. (5350 FRIO) OILTON RESOURCES, INC. 08868 TRES VAQUERO SWD BRISCOE RANCH (EAGLEFORD) C&E PRODUCTION, LLC 18220 TREVINO SASPAMCO DARICO OIL & GAS CO. 07989 TREVINO & SONS PEARSALL (AUSTIN CHALK) FINALY RESOURCES LLC 13788 TREVINO UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17176 TREVINO, JESSE M. SASPAMCO DARICO OIL & GAS CO. 04376 TREVINO, SHORTY PEARSALL (AUSTIN CHALK) SRJC ENTERPRISES, LLC 13046 TRI-FORCE CHRISTIAN CHRISTIAN (6800) GALILEE OIL INVESTMENTS LLC 17918 TRI-FORCE FLOYD EAGLEVILLE (EAGLE FORD-1) TRI-FORCE EXPLORATION, L.L.C. 18203 TRIGO UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16415 TRINITY UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18592 TRIPLE J PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14795 TRISTAN, P. SPILLER INTER GLOBAL TEXAS OIL & GAS LLC 13669 TROELL, C. T. PLEASANTON, S. (CARRIZO SAND) MAZCO ENERGY LLC 01385 TROELL, CHARLES T. PLEASANTON, S. (CARRIZO SAND) MAZCO ENERGY LLC 01387 TROELL, CHARLES T. -A- PLEASANTON, S. (CARRIZO SAND) MAZCO ENERGY LLC 01389 TROELL, CHAS. T. PLEASANTON, S. (CARRIZO SAND) MAZCO ENERGY LLC 01380 TROELL, CHAS. T. PLEASANTON, S. (QUEEN CITY) MAZCO ENERGY LLC 01393 TROELL, CHAS. T. PLEASANTON, S. (SPARTA) MAZCO ENERGY LLC 02923 TROTTER PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15715 TS-WINTERBOTHAM UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19754 TSCHIRHART, L. PEARSALL (AUSTIN CHALK) CHAPARRAL NATURAL RESOURCES,INC. 12461 TT RANCH UNIT A LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16601 TT RANCH UNIT B LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16560 TUCKER A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 10077 TUCKER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17458 TULE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17937 TULL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17311 TUMLINSON BLAKEWAY (OLMOS A) MCDAY ENERGY CORP. 11353 TUMLINSON -B- MINERVA-ROCKDALE PRICE OPERATING, LLC 10529 TUMLINSON LANDCASTLE MINERVA-ROCKDALE PRICE OPERATING, LLC 17331 TUMLINSON UNIT BLAKEWAY (DIXON SAND) TEXOWA, LLC 06494 TUMLINSON UNIT #8 BLAKEWAY (DIXON SAND) TEXOWA, LLC 10607 TUMLINSON-COFFIELD UNIT #1 BLAKEWAY (DIXON SAND) TEXOWA, LLC 10606 TUMLINSON, BERTA UNIT BLAKEWAY (DIXON SAND) ANACONDA OIL & GAS 06202 TUMLINSON, MAUDE, ET AL MINERVA-ROCKDALE PRICE OPERATING, LLC 03608 TURDUCKEN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17635 TURK-WILLIAMS SA A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19915 TURK-WILLIAMS SA B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 20005 TURK-WILLIAMS SA C EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19966 TURK-WILLIAMS UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15938 TURMAN BRISCOE RANCH (EAGLEFORD) TRINITY OPERATING (USG), LLC 15855 TURMAN PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 17705 TURMAN UNIT PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 15275 TURNAM-HIGGINS KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 07191 TURNBOW UNIT EAST EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17994


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ TURNBOW UNIT WEST EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18013 TURNER DUNLAP B.O. OIL COMPANY 03965 TURNER, JESSE, JR., ETAL DUNLAP B.O. OIL COMPANY 00515 TURNER, L.M. JR. SOMERSET TURNER, L. M. JR. 11301 TURNER, R. M. -A- SALT FLAT DARST CREEK OIL COMPANY 02538 TURNER, R. M. -B- SALT FLAT DARST CREEK OIL COMPANY 02330 TURNEY BRISCOE RANCH (EAGLEFORD) XOG OPERATING LLC 16286 TURNEY RANCH TURNEY SAGUARO PETROLEUM, LLC 18708 TURNEY-WINN WILDCAT JANCO OPERATING 12378 TURNEY, PAUL, MRS., RANCH -A- TURNEY FRIESS, HAROLD TURNEY 03408 TURNHAM PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 05614 TURNHAM-ASTRO NCT-1 PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 06858 TURNHAM, J.C. PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 05163 TURNY RANCH LEASE TURNEY BONFIRE OPERATING LLC 18381 TWIN VALLEY -A- UNIT SOMERSET CHARITA 11572 TWIN VALLEY -B- UNIT SOMERSET CHARITA 12062 TWIN VALLEY -E- UNIT SOMERSET GINCO OPERATING CO. 11064 TWIN VALLEY "C" UNIT SOMERSET CHARITA 11605 TXSO RICHTER UNIT STOCKDALE (AUSTIN CHALK) TEXAS SOUTH OPERATING CO, INC. 19661 TYLER EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 15506 TYLER SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14735 TYLER "B" SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14435 TYLER RANCH A.W.P. (OLMOS) TEXEGY OPERATING COMPANY LLC 15064 TYLER RANCH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17069 TYLER RANCH EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 15498 TYLER UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16265 TYLER UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16320 TYLER UNIT C EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16321 TYLER UNIT D EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16853 TYLER UNIT E EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16904 TYLER UNIT F EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17135 TYLER UNIT H EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17070 TYLER, J. W., ET UX BULLOH (NAVARRO) VICEROY PETROLEUM, LP 04644 TYREE, S.B. PILGRIM (AUSTIN CHALK) J.W. SERVICE COMPANY 13419 ULLMAN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15328 UNCLE BUCK MINERVA-ROCKDALE S.L.&B. OIL CO. 10653 UNDERWOOD W.C. FINCH (SIMSBORO 1900) SHELDON RESOURCES, L.P. 11691 UNO MAS -B- STRICKHAUSEN (OLMOS TRI-BAR) FIRST ROCK, INC. 10693 UNSELL, EDWIN E. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 04792 URBAN HEIRS PEARSALL (BUDA, S.) TOTAL ENERGY PARTNERS (TX), LLC 18792 URBAN, MILTON PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 12978 URBANCZYK EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16171 URBANCZYK EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 15465 URIBE, ALICIA SOMERSET GREAT PLAINS RESOURCES, INC. 10928 VALCHER, EMMA VISTO (AUSTIN) DOMINION PRODUCTION COMPANY, LLC 11519 VALENTA PILGRIM (AUSTIN CHALK) BYRD OPERATING COMPANY 12794 VALLEY WELLS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15561 VALLEY WELLS HC 2 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19550 VALLEY WELLS HC1 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19549 VALLEY WELLS HC10 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20003 VALLEY WELLS HC3 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19551


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ VALLEY WELLS HC4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19561 VALLEY WELLS HC5 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19569 VALLEY WELLS HC6 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19560 VALLEY WELLS HC7 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19540 VALLEY WELLS HC8 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20001 VALLEY WELLS HC9 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20002 VALLEY WELLS STATE UT 23 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19456 VALLEY WELLS STATE UT 24 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19458 VALLEY WELLS UNIT 10 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17681 VALLEY WELLS UNIT 11 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17682 VALLEY WELLS UNIT 12 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17683 VALLEY WELLS UNIT 13 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17684 VALLEY WELLS UNIT 14 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18532 VALLEY WELLS UNIT 15 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18536 VALLEY WELLS UNIT 16 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18529 VALLEY WELLS UNIT 17 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18483 VALLEY WELLS UNIT 18 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18481 VALLEY WELLS UNIT 19 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18474 VALLEY WELLS UNIT 20 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16945 VALLEY WELLS UNIT 21 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18479 VALLEY WELLS UNIT 22 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16944 VALLEY WELLS UNIT 23 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19075 VALLEY WELLS UNIT 24 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19076 VALLEY WELLS UNIT 25 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19537 VALLEY WELLS UNIT 26 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19965 VALLEY WELLS UNIT 27 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19987 VALLEY WELLS UNIT 28 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20009 VALLEY WELLS UNIT 29 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20004 VALLEY WELLS UNIT 30 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20000 VALLEY WELLS UNIT 31 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19999 VALLEY WELLS UNIT 32 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20006 VALLEY WELLS UNIT 33 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20007 VALLEY WELLS UNIT 34 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 20008 VALLEY WELLS UNIT 35 HC1 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19990 VALLEY WELLS UNIT 4 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18443 VALLEY WELLS UNIT 5 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18438 VALLEY WELLS UNIT 6 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18436 VALLEY WELLS UNIT 7 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18439 VALLEY WELLS UNIT 8 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17810 VALOIS BATEMAN (AUSTIN CHALK) RANNIC INC. 09450 VALYN CLARA BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 19173 VAN AUTRY LA VERNIA AUTRY, ALLEN 08768 VAN AUTRY, TRACT 2 LA VERNIA AUTRY, ALLEN 10731 VAN CLEVE UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16888 VAN CLEVE UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16611 VAN CLEVE UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 17527 VAN CLEVE, C. PILOSA, EAST (2ND SAN MIGUEL) TEXOKAN OPERATING, INC. 05918 VAN CLEVE, D.F. PILOSA, EAST (2ND SAN MIGUEL) CUATRO PETRO CORP. 12013 VAN CLEVE, E.C. PILOSA, EAST (2ND SAN MIGUEL) CUATRO PETRO CORP. 05558 VAN CLEVE, JACK PILOSA, EAST (2ND SAN MIGUEL) WILLIAMSON OPERATING CO. 05920 VAN CLEVE, JACK "B" PILOSA, EAST (2ND SAN MIGUEL) HAMPTON ENERGY CORPORATION 05926


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ VAN DALSEM "16" EL INDIO, N.(OLMOS) BETA OIL CORPORATION 11725 VAN HORN, VALON TENNEY CREEK B & S OPERATING COMPANY LLC 08040 VAN WINKLE, JIMMY L. SUTIL (REEF) SEGURO WELL SERVICE, INC. 05954 VAN WINKLE,JIMMY L. SUTIL (BUDA) SEGURO WELL SERVICE, INC. 06474 VAN ZANDT, C.C. FAIRFIELD MORE TEXAS OIL 06391 VANN, D. M. BUCHANAN CARDOZO TECHNOLOGIES, INC. 11835 VANN, D. M. BUCHANAN M & S RESOURCES,LLC 06382 VANN, D.M. BUCHANAN CARDOZO TECHNOLOGIES, INC. 05977 VARNER, A. J. LA VERNIA DOEGE, DONALD 03480 VARNER, A. J. LA VERNIA J.A.G. OIL & GAS 00942 VARNER, A. J. -A- LA VERNIA STRATEGIC ENERGY ALLIANCE LLC 00872 VARNER, A. J. -B- LA VERNIA PRODUCTION RESOURCES, INC. 00873 VASBINDER, J.H. LA VERNIA AGAPE ENERGY INC. 07862 VAUGHAN ESTATE PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04604 VAUGHN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17585 VELTEN, E.C. UNIT SOMERSET EVERETT OIL, INC. 09008 VELVET-WALSTON KAYE (NAVARRO) GAT-MAN PETRO INC. 06616 VENADO SUN T S H (OLMOS) FLETCHER OPERATING, LLC 14926 VENADO TRI BAR (OLMOS) FLETCHER OPERATING, LLC 14826 VENADO BROS. A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18068 VENADO BROS. B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18067 VENADO BROS. C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18140 VENADO BROS. D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18231 VENETIA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18142 VENUS-WILSON PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 14155 VERHEUL B BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15424 VERHEUL UNIT A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15418 VERLANDER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15953 VERMILLION PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 18869 VERNA PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15182 VERNON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16994 VERNOR, RUBY PILGRIM (AUSTIN CHALK) WILSON, BILLY R. 14895 VESPER ASSOCIATES DIM B BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16073 VESPER ASSOCIATES UNIT A LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 17341 VESPER DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15569 VESPER UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19150 VESPER UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19149 VESPER UNIT III DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19181 VESPER UNIT IV DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19202 VESPER UNIT V DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19209 VESPUCCI A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19799 VESPUCCI B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19796 VESSELS, R.P.-TERRY MINERVA-ROCKDALE DORADO OFFSHORE, LLC 09240 VESTER UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19901 VESTRING, ET AL UNIT CEBOLLA (3660) JENNINGS EXPLORATION COMPANY 14244 VICK & YOUNGBLOOD LULING-BRANYON AUSTIN OPERATING, LLC. 03551 VICKERS-BRAUNE EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16341 VICKERY, ARTIE DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 04096 VICKI MILLER MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 18256 VICTORIA NATIONAL BANK KAYE (POTH) SMITH & PHILLIPS AND DILLON 02547 VION BRISCOE RANCH (EAGLEFORD) VERDUN OIL & GAS LLC 15601


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ VIVION GU BRISCOE RANCH (EAGLEFORD) VERDUN OIL & GAS LLC 17787 VIVION UNIT A BRISCOE RANCH (EAGLEFORD) VERDUN OIL & GAS LLC 18565 VIVION UNIT B BRISCOE RANCH (EAGLEFORD) VERDUN OIL & GAS LLC 19321 VOGEL PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 13080 VOIGT, CARROLL CARROL ASANTE OPERATING COMPANY, LLC 06160 VOIGT,RENO LA VERNIA FUEGO ENERGY, LLC 06537 VOLKMAN/DOTTIE LA VERNIA W D WELL SERVICE 05809 VOLKMAN, HATTIE LA VERNIA ALCORN ENERGY, L.L.C. 05836 VOLKMANN, ALFRED LA VERNIA GREAT PLAINS RESOURCES, INC. 10146 VOLTZ UNIT A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15314 VOLTZ UNIT B BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15335 VON GONTEN, ROY LEE MINERVA-ROCKDALE EILAND & VON GONTEN 05898 VON GONTEN, ROY LEE MINERVA-ROCKDALE VON GONTEN, ROY L. 03047 VON ORMY LAND & CATTLE -A- SOMERSET PETROSAURUS, INC. 11303 VON ORMY LAND & CATTLE CO. SOMERSET PETROSAURUS, INC. 11302 VON ORMY LAND & CATTLE CO. -B- SOMERSET PETROSAURUS, INC. 11291 VON ROSENBERG UNIT A DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15612 VON SICHART DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 18431 VORPAHL, ELEANOR LA VERNIA PRODUCTION RESOURCES, INC. 06173 VORPAHL, MARTIN LA VERNIA TANGLEHEAD OPERATING, LLC 00879 VORPAHL, OTTO LA VERNIA PRODUCTION RESOURCES, INC. 06038 VORPHAL, MARTIN LA VERNIA J.A.G. OIL & GAS 11925 VORPHAL, ROBERT LA VERNIA PRODUCTION RESOURCES, INC. 05741 VORPHAL, WILL FLOYD LA VERNIA PRODUCTION RESOURCES, INC. 05647 VOSS "D" PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 13166 VOTAW SAINT THIRTEEN (OLMOS NO. 1) L & J EXPLORATION, LLC 11935 VOTAW "A" SAINT THIRTEEN (OLMOS NO. 1) L & J EXPLORATION, LLC 15028 VOTAW "B" SAINT THIRTEEN (OLMOS NO. 1) L & J EXPLORATION, LLC 18997 VOTAW B BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 17740 VOTAW DIM BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 15975 VOTAW UNIT BRISCOE RANCH (EAGLEFORD) SN OPERATING, LLC 19102 VOTAW UNIT A DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16642 VOTAW, LARRY SAINT THIRTEEN (OLMOS NO. 2) L & J EXPLORATION, LLC 12372 VRANA DOBROWOLSKI (7400 BUDA) WILEY ENERGY SERVICES, LLC 11761 VRANA, BEN FIVE MILE (WILCOX, UPPER) IPACT 14879 VYVLECKA JOURDANTON (RECKLAW) PRESSLY OIL INTEREST, INC. 00764 VYVLECKA, JOE VYVLECKA (CARRIZO) PRESSLY OIL INTEREST, INC. 06343 W JANCA UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16505 W T SANDLIN UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16590 W. E. STACY & SONS ET AL PEARSALL (AUSTIN CHALK) VERMILLION PRODUCTION, INC. 12853 W. R. MARTIN BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 15933 W. SMITH B-A-MCS PSA EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19558 W.E. STAPP IMOGENE WILEY LEASE CO., LTD. 17281 W.H.NEW SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 17692 W.J. TILLER 3-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14980 W.T. HURT UNIT EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19939 W.W.R. INC. CHICON LAKE GENIE OIL COMPANY 10423 WAGLEY-DAVENPORT SCHUBERT (AUSTIN CHALK) GUEDRY, MARK 13303 WAGLEY-MCCULLOUGH DRUMMOND (AUSTIN 1400) GUEDRY, MARK 13659 WAGNER FARMS PEARSALL (AUSTIN CHALK) PRIME OPERATING COMPANY 14705 WAITERS PINK SR.,ET UX LA VERNIA TANGLEHEAD OPERATING, LLC 07742


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WAITERS, JOHN T. LA VERNIA TANGLEHEAD OPERATING, LLC 07181 WALDRIP, DIBRELL STAPLES VT OIL 08959 WALK A JAM A-HERMANN HC1 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19931 WALK A JAM A-HERMANN HC2 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19900 WALK A JAM B-HERMANN HC1 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19927 WALK A JAM B-HERMANN HC2 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19926 WALK A JAM C-E HC1 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19928 WALK A JAM C-E HC2 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19949 WALK A JAM D-F HC1 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19975 WALK A JAM D-F HC2 BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 19978 WALK A JAM UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15790 WALK A JAM UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16515 WALK A JAM UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16516 WALK A JAM UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16494 WALK A JAM UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16517 WALK A JAM UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16656 WALKER DUNLAP IRON ORCHARD OPERATING LLC 06926 WALKER EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17008 WALKER EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 16857 WALKER KAYE (NAVARRO) WALKER, HARREL L. 08676 WALKER MILANO, SOUTH (AUSTIN CHALK) ALLIED OPERATING TEXAS, LLC 17931 WALKER TAYLOR-INA PRODUCTION RESOURCES, INC. 18321 WALKER -A- DUNLAP SHWJ OIL & GAS CO., INC. 10348 WALKER 'B' KAYE (NAVARRO) JOHANSON OIL 17298 WALKER BROS. SALT FLAT JAVELINA OIL & GAS CO. 01490 WALKER-C- DUNLAP OILTEX, LLC 07419 WALKER-PEARSON MILBUR (NAVARRO) SHELDON RESOURCES, L.P. 05804 WALKER, C.R. SALT FLAT OILTEX, LLC 11918 WALKER, G. C. DUNLAP GEOMEG ENERGY OPERATING CO., LLC 03855 WALKER, G. C. DUNLAP GINCO OPERATING CO. 02659 WALKER, H. L. - STATE OF TEXAS KAYE (NAVARRO) CALTEX ENERGY CO. 01870 WALKER, MRS. G. C. -B- DUNLAP GREAT PLAINS RESOURCES, INC. 04260 WALKER, P. L. DUNLAP GINCO OPERATING CO. 03905 WALKER, W. B. -A- SALT FLAT DARST CREEK OIL COMPANY 02271 WALKER, W.B. SALT FLAT OILTEX, LLC 11824 WALKER, W.C. A.W.P. (OLMOS) TREK RESOURCES, INC. 10209 WALL MARCELINA CREEK (AUSTIN CHALK) CEI OPERATING LLC 15657 WALL MARCELINA CREEK (BUDA) CEI OPERATING LLC 15197 WALLACE, G.D. JACK FLASH (ELLENBURGER) HENRY PETROLEUM LLC 13972 WALLER, M L MILANO (PECAN GAP) CXL ENERGY LLC 14719 WALLY UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17357 WALLY UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17272 WALNUT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16103 WALSTON, WILLIS KAYE (NAVARRO) PRODUCTION RESOURCES, INC. 01917 WALTHER CHICON LAKE GENIE OIL COMPANY 09713 WALTOM, LILLIAN VELMA (ESCONDID0) CORE E & P CORP. 08687 WALTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18283 WALTON, C. A. ET AL DARST CREEK (BUDA) HASTON OIL COMPANY 05410 WALTON, LILLIAN VELMA (BUDA LIME) CORE E & P CORP. 10461 WALTON, S.L. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05770 WANJURA CHICON LAKE RPG OPERATING LLC 17955


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WARD LA VERNIA LEVANT ENERGY LLC 00934 WARD E EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 16093 WARD ET AL SMILEY, SE (AUSTIN CHALK) P.E.C.I. OPERATORS, INC. 07584 WARD F EAGLEVILLE (EAGLE FORD-1) LONESTAR OPERATING, LLC 16584 WARD-BILLINGS FIRST SHOT (AUSTIN CHALK) ROSEWOOD RESOURCES, INC. 13225 WARD-RIHA PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 15018 WARD-WENDLAND TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02155 WARD, ALEXANDER J. E.R. BOUNDS (ESCONDIDO) BOUNDS, ROBERT S. 10128 WARD, H. W. LA VERNIA UPLAND OPERATING, LLC 03226 WARD, J. W., JR. CHICON LAKE GENIE OIL COMPANY 15020 WARD, J. W., JR. CHICON LAKE WARD, J. W. III 01868 WARDLAW WARDLAW ACCORD GR ENERGY INC 16912 WARDLAW, L. J. ESTATE -A- WARDLAW UHC PETROLEUM CORPORATION 08108 WARDLAW, L. J. II WARDLAW UHC PETROLEUM CORPORATION 09788 WARE BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15572 WARE HC1 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19809 WARE HC2 LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 19825 WARE UNIT C BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15879 WARE UNIT D BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15854 WARE, ALPHA TORCH (KING) MAVERICK ENERGY GROUP, INC. 02421 WARE, ALPHA TORCH (OLMOS 4) MAVERICK ENERGY GROUP, INC. 14054 WARE, ALPHA TORCH (SAN MIGUEL G) MAVERICK ENERGY GROUP, INC. 14047 WARE, ALPHA TORCH (SERPENTINE) JENEX PETROLEUM CORPORATION 05649 WAREING EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15511 WAREING A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17913 WAREING ALLOCATION EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18623 WAREING ALLOCATION B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19254 WAREING 71A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15852 WAREING 76A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15617 WAREING 76B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15639 WARNCKE-JOSLIN -A- DUNLAP TEXSTAR OIL & GAS, LLC 03795 WARNCKE-JOSLIN -B- DUNLAP AUSTIN OPERATING, LLC. 13306 WARNCKE, ELTON LA VERNIA QUEST RESEARCH & DEV. CORP. 03372 WARNCKE, F. W. LA VERNIA QUEST RESEARCH & DEV. CORP. 03350 WARNER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17727 WARNKEN EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15459 WARNKEN B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16470 WARNKEN C EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16770 WARTHOG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16593 WASH, WALTER LINNE (POTH -A- SAND) GAUNTT, INC. 00963 WASHBURN RANCH 02 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17498 WASHBURN RANCH 03 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16067 WASHINGTON EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16050 WATERMELON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18986 WATKINS-MERCER FENTRESS (1750) MCMINN OPERATING COMPANY, INC. 10535 WATKINS, MAY ACLETO CREEK (POTH B) IB OIL COMPANY, LLC 10515 WATKINS, MAY ACLETO CREEK (POTH C) TRIPLE H PRODUCTION 10362 WATKINS, MAY ET AL ACLETO CREEK (POTH B) TRIPLE H PRODUCTION 07395 WATKINS, SARA LULING-BRANYON GREAT PLAINS RESOURCES, INC. 02959 WATSON SALT FLAT RUJO 03039 WATSON CAMP TRUST SOMERSET CALK OIL COMPANY 08260


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WATSON UNIT SALT FLAT OFFSPRING WELL SALVAGE 03079 WATSON, J. P. SALT FLAT SHALE OPERATING CO. 01445 WATSON, J.P. -A- SALT FLAT GAUGE OIL COMPANY 12346 WATSON, MARTIN LULING-BRANYON MA-STELL INC 09429 WATSON, RUSSELL & PAULA CHICON LAKE MCGUIRE, JOE INC. 11885 WATT FARM WILDCAT SCHLUMBERGER TECHNOLOGY CORP. 14854 WATTS BRISCOE RANCH (EAGLEFORD) TRINITY OPERATING (USG), LLC 17029 WATTS PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 15271 WATTS-TEXAS AMERICAN UNIT 29 BRISCOE RANCH (EAGLEFORD) TRINITY OPERATING (USG), LLC 17030 WATTS, H.L. CHARLOTTE (NAVARRO) WEN-BE 10686 WATTS, OTTO SOMERSET GREAT PLAINS RESOURCES, INC. 06666 WATTS, R.D. SALT FLAT, WEST EAGLE FORD OIL CO., INC. 09222 WATTS, WILLIE JOE DUNLAP STELLFLUG, TERRY L., D.C. 11337 WATTS, WILLIE JOE -A- DUNLAP STELLFLUG, TERRY L., D.C. 08395 WATTS, WILLIE JOE -B- DUNLAP STELLFLUG, TERRY L., D.C. 08561 WATUSI UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17986 WAUKESHA-PEARCE SANER RANCH (SAN MIGUEL) KREMCO OIL LLC 19562 WAYNE BRINKLEY CHEROKEE (NAVARRO) CXL ENERGY LLC 17676 WEAKLEY, JORDON ESTATE UNIT DUNLAP BLACKMAR, JIM OIL OPERATOR 08295 WEATHERSBY PEARSALL (AUSTIN CHALK) MCDAY ENERGY CORP. 04896 WEAVER, W. G. SALT FLAT LUTEX OIL, LTD. 03069 WEBB PENA CREEK (SAN MIGUEL 2ND) FLINT OAK ENERGY, LLC 14351 WEBB SOMERSET MORE TEXAS OIL 10760 WEBB -A- BENTON CITY S, (ANACACHO) SEEKER OIL COMPANY, INCORPORATED 06658 WEBB OIL UNIT II DRUMMOND (AUSTIN 1400) BENCHMARK TEXAS PETROLEUM, LLC. 03964 WEBB OIL UNIT II DRUMMOND (EDWARDS 1800) BENCHMARK TEXAS PETROLEUM, LLC. 15817 WEBB OIL UNIT III DRUMMOND (AUSTIN 1400) MK EXPLORATIONS, LLC 19425 WEBB OIL UNIT III DRUMMOND (EDWARDS 1800) MK EXPLORATIONS, LLC 18733 WEBB UNIT SALT FLAT SHEFTS & SHEFTS, INC. 08484 WEBB-A- SOMERSET PETROSAURUS, INC. 11365 WEBB, EDGAR KAYE (NAVARRO) PRODUCTION RESOURCES, INC. 00776 WEBB, ERNEST LULING-BRANYON GINCO OPERATING CO. 04183 WEBB, FLORA JOURDANTON (QUEEN CITY) WSM 07113 WEBB, MAX L. SALT FLAT IRON ORCHARD OPERATING LLC 02927 WEBB, MAX L. B SALT FLAT M. B. ENERGY, LLC 07476 WEBB, MAX L., -B- SALT FLAT IRON ORCHARD OPERATING LLC 03346 WEBB, R. DRUMMOND (AUSTIN 1400) CAVALIER OIL & GAS, INC. 03902 WEBB, REUBEN DRUMMOND (AUSTIN 1400) LSA OPERATING 04483 WEBB, RUEBEN DRUMMOND (AUSTIN 1400) JOE R. CHEATHAM OIL COMPANY 15445 WEBB, RUEBEN DRUMMOND (EDWARDS 1800) JOE R. CHEATHAM OIL COMPANY 05794 WEBB, T.C. SOMERSET QUINTANILLA, TONY C. 10810 WEBB, T.C. -A- SOMERSET K2 PETROLEUM, INC. 11116 WEBB, T.C. -A- SOMERSET QUINTANILLA, TONY C. 13273 WEBB, TOM BROWN SALT FLAT GINCO OPERATING CO. 07392 WEBB, TOMMY C. -B- SOMERSET QUINTANILLA, TONY C. 13496 WEBB, TOMMY C. -C- SOMERSET QUINTANILLA, TONY C. 10811 WEBBER, HILDA ADAMS (BUDA) SULO OIL COMPANY 05495 WEBER AC UNIT FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 15905 WEBER, L.G. PILOSA, EAST (2ND SAN MIGUEL) PICOSA, L.L.C. 07956 WEDDINGTON, ADELINE FASHING (EDWARDS LIME -A-) TENNECO OIL CO. 02683 WEED UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18410


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WEEKS, M.N. PEARSALL (AUSTIN CHALK) LTS OIL & GAS A 12430 WEIGANG, G. F. WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01776 WEIMER UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15785 WEIMER UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16137 WEIMERS, ALFRED B. -A- TAYLOR-INA CIVRON PETROLEUM RES., LLC 05795 WEINSTROM PETROLEUM TAYLOR-INA WEINSTROM PETROLEUM 05385 WEINSTROM, HERBERT & JANET ELAIN TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06420 WEIR-RAMBIE SOMERSET EVERETT OIL, INC. 09341 WEIR-RAMBIE SOMERSET PETRO LIONS, LLC 06756 WEISSLER -B- TAYLOR-INA SIERRA BLANCA PETRO. ENERGY,INC. 12170 WEISSLER, A. C. TAYLOR-INA OUACHITA OIL & GAS CO. 04583 WELDON SCHORP UNIT "A" BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 15404 WELDON SCHORP WEST UNIT LORENZO (AUSTIN CHALK) VENADO OPERATING COMPANY LLC 19122 WELLS-TOUCHSTONE SOMERSET PETROLEUM OILFIELD SERVICES INC. 01649 WELLS, ED. SOMERSET GINCO OPERATING CO. 01646 WELLS, ED. M. -A- SOMERSET GINCO OPERATING CO. 01647 WELLS, ED. M. TRUST SOMERSET GINCO OPERATING CO. 03984 WELLS, J. W. NIXON ALCOR ENERGY, INC. 11951 WELLS, R.L. SOMERSET GREAT PLAINS RESOURCES, INC. 10954 WENDLANDT-MASSENGALE LYTTON SPRINGS JOE R. CHEATHAM OIL COMPANY 10490 WENZEL, BENNIE -A- MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 02499 WENZEL, BENNIE -B- MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 03900 WERCHAN, R.B WRIGHT SPILLER CENTEX PIPE & EQUIPMENT, INC. 09274 WERNETTE, LOUIS J. TAYLOR-INA WERNETTE, LOUIS J. 02404 WESLEY SWAIM EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 15986 WESLEY SWAIM UNIT EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 17203 WEST JOURDANTON UNIT JOURDANTON, WEST (ESCONDIDO) WATSON ENERGY INVESTMENTS, LLC 14105 WEST PENA A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18138 WEST PENA B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18139 WEST PENA C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18218 WEST PENA D UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18301 WEST RANCH WILDCAT RIMFIRE LAND & CATTLE CO. 14659 WEST RASMUSSEN UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16895 WEST SHINER RANCH PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 12616 WEST UNIT WILDCAT SCHAARON INTERNATIONAL ENERGY 12174 WEST Y-BAR EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 17602 WEST, MARY PILOSA, NORTH (2ND SAN MIGUEL) J M FOUR PRODUCTION 05950 WEST, MASSIE MASSIE WEST (PALUXY) MWWD OPERATOR, LLC 02592 WEST, MASSIE 'A' MASSIE WEST (PALUXY) SYNERGY-WEST EXPLORATION CO LLC 18428 WEST, MASSIE 'B' MASSIE WEST (PALUXY) SYNERGY-WEST EXPLORATION CO LLC 18411 WESTBROOK SALT FLAT EAGLE FORD OIL CO., INC. 08474 WESTBROOK, W. G. CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 04180 WESTHOFF SWD EAGLEVILLE (EAGLE FORD-1) EVX MIDSTREAM PARTNERS II LLC 16661 WESTWIND UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15607 WETHERBEE, CHARLES F. TRUSTEE -A PEARSALL (AUSTIN CHALK) MISSION RIVER SYSTEMS, INC. 07306 WF UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17296 WHARNCLIFFE 1H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18630 WHARNCLIFFE 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18649 WHATABURGER CATARINA, E. (OLMOS A) L & J EXPLORATION, LLC 14037 WHATLEY, NELDA BATEMAN (AUSTIN CHALK) MEB, LLC 09067 WHEELER A.W.P. (OLMOS) WHITE OAK OPERATING COMPANY LLC 09922


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WHEELER A.W.P. (WILCOX 6200) WHITE OAK OPERATING COMPANY LLC 14416 WHEELER DILWORTH, S.E. (WILCOX SUTTON) 2 D OIL & GAS LLC 14989 WHEELER DILWORTH, SE (WILCOX 6500) DARK HORSE PRODUCING OF TX, L.P. 15191 WHEELER DILWORTH, SE (WILCOX 6500) SUTTON PRODUCING CORP. 11869 WHEELER DILWORTH, SE (WILCOX 6500) TEXRON OPERATING, LLC 17489 WHEELER EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15325 WHEELER SAN MIGUEL CREEK (WILCOX CONS.) EAGLE OIL & GAS CO. 14707 WHEELER EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16848 WHEELER FOLEY UNIT A MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16657 WHEELER OL A.W.P. (OLMOS) TEXOZ E&P I, INC. 17887 WHEELER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17916 WHEELER-WHITE EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17229 WHEELER, CLIFTON SAN MIGUEL CREEK (WILCOX CONS.) ENERQUEST OPERATING L.L.C. 14666 WHEELER, E., MRS. SCOTTY (BARTOSH SAND) GREENWERKS OUTDOOR SERVICES LLC 01567 WHEELER, KAREN A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14886 WHEELER, KAREN -A- WHEELER (OLMOS) CLEARLY PETROLEUM, LLC 04868 WHEELER, LEE A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 11912 WHEELER, LEE SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 15076 WHEELER, LEE -A- A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 12225 WHEELER, LEE -B- A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14696 WHEELER, LEE A-2 A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 15100 WHEELER, MARY ANN A.W.P. (OLMOS) WHEELER, JOHN D. 11402 WHEELER, N. A.W.P. (OLMOS) XTO ENERGY INC. 08893 WHEELER, ROY G. ET AL VELMA (ESCONDID0) WSM 09122 WHEILES, RUTH J. FAIRFIELD DRACHEN OIL COMPANY 08946 WHERRY & GREEN UNIT WHERRY & GREEN (REKLAW) BRYMER CONTRACTING INCORPORATED 14201 WHIDDON SMILEY (AUSTIN CHALK) AUTERRA OPERATING, LLC 18157 WHITE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16250 WHITE MARLIN PEARSALL (BUDA, S.) CML EXPLORATION, LLC 19393 WHITE TAIL UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 16074 WHITE, C. CAMPBELL FAIRFIELD DRACHEN OIL COMPANY 09796 WHITE, C. CAMPBELL FAIRFIELD DRACHEN OIL COMPANY 11637 WHITE, E. B. LULING-BRANYON GINCO OPERATING CO. 03414 WHITE, ELI FAIRFIELD D.C. OIL 06776 WHITECOTTON PEARSALL (AUSTIN CHALK) PINTO OIL CO. 13413 WHITECOTTON UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14889 WHITECOTTON UNIT A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15421 WHITEHEAD WARDLAW WALT (PALUXY) RIO-TEX, INC. 18848 WHITEHEAD WARDLAW WARDLAW RIO-TEX, INC. 18449 WHITEHEAD, CINDY E. WILDCAT BRONCO-MEDINA OIL CO., INC. 11948 WHITEHURST A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14138 WHITETAIL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15891 WHITLEY PEARSALL (AUSTIN CHALK) KRC OPERATING, LLC 19946 WHITLEY SERBIN (WILCOX) SHELDON RESOURCES, L.P. 12128 WHITLEY-DUBOSE UNIT INDIO TANKS (PEARSALL) EARTHSTONE OPERATING, LLC 17777 WHITLEY, ARTH S. SOMERSET BRANDER, SAM H. 11413 WHITLEY, C., ETAL SPILLER QUEST EMG, INC. 03653 WHITMIRE, W.A. A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 12190 WHITTINGTON PENA CREEK (GEORGETOWN) CML EXPLORATION, LLC 19390 WHITWELL PEARSALL (AUSTIN CHALK) STONEGATE OPERATORS, INC. 05144 WHITWELL A EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 19827


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WHITWELL A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17622 WHITWELL B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17603 WHITWELL C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17605 WHITWELL D UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18417 WHITWELL E UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17604 WHITWELL F UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18181 WHITWELL G EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 20016 WHITWELL G UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18568 WHITWELL H UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18506 WHITWELL I UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18513 WHITWELL J UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18514 WHITWELL K UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18515 WHITWELL L UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 19061 WHITWELL M UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18695 WHITWELL N UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18470 WHITWELL O UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 18516 WHITWORTH WILDCAT ATERRA EXPLORATION, LLC 17553 WHYBURN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15888 WIATREK MARCELINA CREEK (AUSTIN CHALK) CEI OPERATING LLC 15222 WICKHAM, J. E. GOOD LUCK (SAN MIGUEL) ARRCO OPERATING, LLC - 06811 WICKHAM, JOHN E. BIG WELLS (SAN MIGUEL) THALMANN, DAVID VAC SERVICE INC 04398 WICKHAM, JOHN E. GOOD LUCK (SAN MIGUEL) THALMANN, DAVID VAC SERVICE INC 04149 WIDGEON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16892 WIEDING, HUGO -B- LA VERNIA ALCORN RESOURCES, LLC 01845 WIEDING, HUGO -E- LA VERNIA KOCH, I. ERNEST 02638 WIEDING, HUGO -F- LA VERNIA KOCH, I. ERNEST 03814 WIEDING, L. LA VERNIA MIDSTATES CORPORATION 07599 WIEMERS SOMERSET GREAT PLAINS RESOURCES, INC. 11067 WIEMERS, C.T. -A- SOMERSET PETROSAURUS, INC. 11211 WIER PEARSALL (AUSTIN CHALK) WSM 12528 WIER-RAMBIE SOMERSET GREAT PLAINS RESOURCES, INC. 11065 WILDE TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16986 WILDER, A.E. HOSEK (POTH, LO. -A-) H & P PARTNERSHIP 10498 WILEY NIXON ORIGIN PRODUCTION GROUP LLC 13342 WILEY -C- NIXON ORIGIN PRODUCTION GROUP LLC 12121 WILEY, E.G. ACLETO CREEK (POTH B) TRIPLE H PRODUCTION 09449 WILEY, G.A. NIXON JOHNSON OIL & GAS 07144 WILHELM-SMITH UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16354 WILKE SWD FIRST SHOT (AUSTIN CHALK) TRINITY ENVIRO SWD I, L.L.C. 13265 WILKE 2 WILDCAT APACHE CORPORATION 15159 WILLARD, E.K. CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 09617 WILLE, H. DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02762 WILLE, H. DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02805 WILLE, HENRY DARST CREEK (BUDA) GARRISON LTD. 02744 WILLEFORD KAYE (NAVARRO) ALCORN ENERGY, L.L.C. 14578 WILLEFORD, D. L. KAYE (NAVARRO) KOCH, I. ERNEST 01841 WILLEFORD, DELBERT KAYE (NAVARRO) JARUTOWICZ OIL COMPANY 06779 WILLERSON PEARSALL (BUDA, S.) D90 ENERGY, LLC 17685 WILLEY, JESSE V LA VERNIA MATTKE, PAUL 06143 WILLIAM E. EMLEY CHICON LAKE LONGSHOT ENERGY LLC 18935 WILLIAM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16965


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WILLIAMS GOLDFINCH (AUSTIN CHALK) RICKAWAY ENERGY, CORP. 14999 WILLIAMS PEARSALL (AUSTIN CHALK) 3 W INVESTMENTS LLC 12519 WILLIAMS SALT FLAT CASTILLO OIL COMPANY LLC 03033 WILLIAMS UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16426 WILLIAMS UNIT PATTY HUTT (WILCOX) WSM 04776 WILLIAMS-BUTTLES PEARSALL (AUSTIN CHALK) SIERRA PETROLEUM CO. 13138 WILLIAMS, G. -A- A.W.P. (OLMOS) XTO ENERGY INC. 12125 WILLIAMS, GENEVIEVE PEARSALL (AUSTIN CHALK) SOUTH COAST OIL & GAS CO. 06277 WILLIAMS, GRANT LA VERNIA SOURCE PETROLEUM INC. 09704 WILLIAMS, GRANT H. A.W.P. (OLMOS) XTO ENERGY INC. 08987 WILLIAMS, GRANT H. -A- A.W.P. (OLMOS) XTO ENERGY INC. 10516 WILLIAMS, H. UNIT SALT FLAT, WEST R & S OIL PRODUCTION CO. 07431 WILLIAMS, HOWARD COMANCHE CREEK (ERSKINE SD.) MILLENNIUM PETRO-PHYSICS, INC. 02696 WILLIAMS, J. T. TENNEY CREEK RED SHELL INC 07991 WILLIAMS, L.P. CARRIZO, NORTH (AUSTIN CHALK) THALMANN, DAVID VAC SERVICE INC 05180 WILLIAMS, LOLA SMITH SALT FLAT OCCIDENTAL ENERGY COMPANY, INC. 03009 WILLIAMS, MARY ISABELLA FREDDY HUTT, SOUTH (WILCOX) WSM 13994 WILLIAMS, MARY ISABELLA -A- PATTY HUTT (WILCOX) WSM 05664 WILLIAMS, MINNIE E. SOMERSET GREAT PLAINS RESOURCES, INC. 01650 WILLIAMS, MINNIE E. SOMERSET PETROSAURUS, INC. 10946 WILLIAMS, S. MARSHA L.O. OIL & GAS, LLC 10552 WILLIAMS, SOPHIA MARSHA L.O. OIL & GAS, LLC 13606 WILLIE NELSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17632 WILLIE-JOHN CHENAULT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17479 WILLIE, E.M. MINERVA-ROCKDALE MEXIA OIL & GAS, INC. 07146 WILLIE, H. 3-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 15024 WILLIE, HENRY -A- DARST CREEK (BUDA) GARRISON LTD. 02713 WILLIE, HENRY -B- DARST CREEK (BUDA) TEXSTAR OIL & GAS, LLC 02765 WILLMAN, PAUL DARST CREEK (BUDA) DJ EXPLORATION, INC. 08494 WILLMON PILOSA, EAST (2ND SAN MIGUEL) WITHERSPOON OIL COMPANY 05930 WILLOUGHBY, R.B. LEONA (ELAINE) STRATA STAR PETROLEUM CORP. 06074 WILLOW 2H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19236 WILLOW 3H BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 19271 WILLWY, JESSE "A" LA VERNIA MATTKE, PAUL 00871 WILMETH B PEARSALL (BUDA LIME) TEXAS OIL AND GAS OPERATING, LLC 19042 WILSON CROWN, E. (NAVARRO) BAYLOR OPERATING, LLC 16181 WILSON CROWN, E. (NAVARRO) BRITANCO, L.L.C. 15393 WILSON EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 15507 WILSON EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16564 WILSON EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 15755 WILSON SALT FLAT HOLLUB, LAMBERT DRILLING COMPANY 06576 WILSON - MALONE SALT FLAT (EDWARDS) NORTH SOUTH OIL, LLC 15939 WILSON -A- DARST CREEK (BUDA) GINCO OPERATING CO. 02739 WILSON -A- SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 08807 WILSON -B- DARST CREEK (BUDA) GINCO OPERATING CO. 02740 WILSON BROTHERS UNIT EAGLEVILLE (EAGLE FORD-1) CINCO OIL & GAS, LLC 18553 WILSON RANCH EAGLEVILLE (EAGLE FORD-1) CRIMSON ENERGY PARTNERS IV, LLC 17905 WILSON TERTIARY UNIT TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 15166 WILSON TRACTS DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16193 WILSON UNIT PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14087 WILSON UNIT 1 BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19145


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WILSON UNIT 2 BRISCOE RANCH (EAGLEFORD) FREEDOM PRODUCTION, INC. 19160 WILSON-RIDGE UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 12445 WILSON, A.H. TAYLOR-INA UNIVERSITY OF TX AT AUSTIN, THE 11559 WILSON, DALLAS DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 04046 WILSON, DALLAS 1H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14684 WILSON, F.W. SALT FLAT IRON ORCHARD OPERATING LLC 06376 WILSON, GAIL CROWN, E. (NAVARRO) EXXCEL OPERATING COMPANY 05259 WILSON, H. J. FLORESVILLE, E. (POTH B 2800) TRIPLE H PRODUCTION 03757 WILSON, J. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01519 WILSON, J. ET UX UNIT SALT FLAT LUTEX OIL, LTD. 12193 WILSON, J. ET UX UNIT SALT FLAT R & S OIL PRODUCTION CO. 10609 WILSON, J. M. IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 00692 WILSON, J. N. TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 01719 WILSON, J. N. TAYLOR-INA PRODUCTION RESOURCES, INC. 02189 WILSON, J. N. TAYLOR-INA RORICO OIL COMPANY 01722 WILSON, J. N. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02052 WILSON, J. N. -B- TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 02018 WILSON, J. N. -B- TAYLOR-INA PRODUCTION RESOURCES, INC. 01829 WILSON, J. N. -C- TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 02032 WILSON, J. N. "G" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02379 WILSON, J. N. "H" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02101 WILSON, J. N. "P" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01879 WILSON, J. N., -A- TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 02948 WILSON, J. T. CROWN, E. (NAVARRO) WSM 00367 WILSON, J. T. PEARSALL (AUSTIN CHALK) STONEGATE PRODUCTION COMPANY,LLC 14582 WILSON, J.A. CROWN, E. (NAVARRO) EXXCEL OPERATING COMPANY 00364 WILSON, J.T. PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 11906 WILSON, JAMES A. PEARSALL (AUSTIN CHALK) AMPAK OIL COMPANY 12473 WILSON, JAMES ET AL -A- B B B (OLMOS A) BRYMER CONTRACTING INCORPORATED 11877 WILSON, JESSE JR. PLUS FIVE JONICE (BUDA) RATHBUN PRODUCTION SERVICE INC. 06211 WILSON, JOHN A. -C- II CROWN, E. (NAVARRO) NINEVEH CORP. 09966 WILSON, JOHN A. JR. CROWN, E. (NAVARRO) ORTIZ, JOSE & SONS 03331 WILSON, JOS., -A- SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 03143 WILSON, STELLA CROWN, E. (NAVARRO) WTXR OPERATING (TEXAS), INC. 00368 WILSON, THOMAS DUNLAP GEOMEG ENERGY OPERATING CO., LLC 06808 WILSON, VIOLA SMITHVILLE (AUSTIN CHALK) TEX-LEE OPERATING COMPANY 05566 WILTGEN, CARTER DEL MONTE R.B.S. OIL & GAS INC. 08388 WIMBERLEY, W. H. MINERVA-ROCKDALE NORTHLAND PETROLEUM, LLC 09438 WIMBERLY DEV. CORP. -A- TAYLOR-INA BLACK MAC OIL, INC. 06677 WINANS LIVING TRUST SOMERSET PETRO LIONS, LLC 10800 WINANS, ANDREW SOMERSET CALFAS OIL, LLC 10791 WINBORN, R.F. A.W.P. (OLMOS) XTO ENERGY INC. 09677 WINDFALL UNIT PILGRIM (AUSTIN CHALK) TEXATRON PETROLEUM LLC 13948 WINDSOR UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16438 WINDSOR UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16440 WINDWEHEN-NORTHCUTT EAGLEVILLE (EAGLE FORD-1) AUTERRA OPERATING, LLC 16729 WINFIELD A UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16278 WINFIELD B UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16304 WINFIELD C UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 16173 WINFIELD-RAEMAY ALLOCATION A EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18947 WINFIELD-RAEMAY ALLOCATION B EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18942


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WINFIELD-RAEMAY ALLOCATION C EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18943 WINFIELD-RAEMAY ALLOCATION D EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 18946 WINFIELD-RAEMAY ALLOCATION E EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19305 WINFIELD-RAEMAY ALLOCATION F EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19306 WINFIELD-RAEMAY ALLOCATION G EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19317 WINFIELD-RAEMAY ALLOCATION H EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19304 WINKENWERDER, B.R. PEACH CREEK (AUSTIN CHALK) P-R-O MANAGEMENT, INC. 11681 WINKLER UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16854 WINN SOMERSET PETROSAURUS, INC. 11068 WINN RANCH EAGLE (AUSTIN CHALK) WINN EXPLORATION CO., INC. 06782 WINN RANCH EAGLE (EAGLE FORD) WINN EXPLORATION CO., INC. 05244 WINN RANCH EAGLE (1200) WINN EXPLORATION CO., INC. 04062 WINN RANCH EAGLE (3460) WINN EXPLORATION CO., INC. 08169 WINN RANCH EAGLE PASS (EAGLEFORD) WINN EXPLORATION CO., INC. 03544 WINSHIP HUGH FITZSIMMONS (SAN MIGUEL) ENDEAVOR NATURAL GAS, LP 18984 WINSLOW SUN T S H (OLMOS) FLETCHER OPERATING, LLC 14896 WINTERBOTHAM ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15744 WINTERBOTHAM-COMMERCE UNIT BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19616 WINTERBOTHAM-TN UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 19779 WINTERS, ALYSE PRUITT PEARL, BILL H. PRODUCTIONS, INC. 11648 WINTERS, ALYSE PRUITT, S. (ESCONDIDO) PEARL, BILL H. PRODUCTIONS, INC. 09204 WINTERSHALL-GERKE UNIT "A" PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 13086 WINTERSHALL-MEINERS PEARSALL (AUSTIN CHALK) LONESTAR OPERATING, LLC 13243 WINTON UNIT PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, L.L.C. 15049 WIPFF, KARL WIPFF (GEORGETOWN 2090-A) SHAW, T. G. OIL COMPANY, LTD. 04470 WISDOM SOMERSET RALYN CORP. 11694 WISEMAN PLEASANTON, E. (EDWARDS) PEARL, BILL H. PRODUCTIONS, INC. 09792 WISEMAN, H. W. LA VERNIA TANGLEHEAD OPERATING, LLC 00912 WISHERT, LOVETT H. LA VERNIA PRODUCTION RESOURCES, INC. 00880 WISHERT, LOVETTE H. -A- LA VERNIA MOJ ENERGY, L.L.C. 07421 WITHERS HONCHO-MAGUELLITOS (1300) FIRST UNITED OIL & GAS CORP. 07822 WITHERS, LOIS LULING-BRANYON FIELD OPERATING COMPANY, INC. 03683 WITHERS, LOIS LULING-BRANYON FIELD OPERATING COMPANY, INC. 07353 WITHERSPOON SOMERSET CALK OIL COMPANY 10742 WITHERSPOON -A- PILOSA, EAST (2ND SAN MIGUEL) WITHERSPOON OIL COMPANY 14096 WITHERSPOON -B- PILOSA, EAST (2ND SAN MIGUEL) WITHERSPOON OIL COMPANY 14097 WITTE, ELTON LA VERNIA THREE J ENERGY, INC. 06359 WITTE, ELTON (A) LA VERNIA THREE J ENERGY, INC. 05793 WITTER, C.L.UNIT A DALE-MCBRIDE EAGLE FORD OIL CO., INC. 04340 WK GU 12 EAGLEVILLE (EAGLE FORD-1) BPX OPERATING COMPANY 17089 WK UNIT 16 EAGLEVILLE (EAGLE FORD-1) BPX OPERATING COMPANY 17251 WLS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18005 WN UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 18518 WOELFEL NOACK MAGNUM OILFIELD SERVICES LLC 16020 WOLFE, ELLA MAE PEARSALL (AUSTIN CHALK) GODSEY & RILEY 06548 WONDRA, MELVIN FAIRFIELD GREAT PLAINS RESOURCES, INC. 10584 WONG-STOREY TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES OPER CO, LLC 18063 WOOD UNIT B PEARSALL (BUDA, S.) CONTANGO RESOURCES, INC. 18550 WOOD UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16906 WOOD, MAE LOU SOMERSET GREAT PLAINS RESOURCES, INC. 11096 WOOD, MAE LUE SOMERSET PETROSAURUS, INC. 05862


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WOOD, ROBERT W. ET AL -A- ADAMS (BUDA) TEXAS SECONDARY OIL CORPORATION 04970 WOOD, WELDON KENS (SERPENTINE) R & S OIL PRODUCTION CO. 10211 WOODARD, MAGGIE MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 09320 WOODBURY LORENZO (AUSTIN CHALK) SN OPERATING, LLC 17274 WOODS, G.T. JORDAN (NAVARRO B) SHELDON RESOURCES, L.P. 12559 WOODS, HENRY CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 04262 WOODS, HENRY I CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 11393 WOODS, RAY CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 14730 WOODS, RAY CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 04048 WOODWARD A.W.P. (OLMOS) FIRST ROCK, INC. 18448 WOODWARD PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16394 WOODWARD PEARSALL (AUSTIN CHALK) CONWAY ENERGY OPER SERVICES INC. 13232 WOODWARD A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15419 WOODWARD EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 18926 WOOTTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17051 WORDEN UNIT EAGLEVILLE (EAGLE FORD-1) ATLAS EAGLE FORD OPER CO, LLC 18078 WR "A" A.W.P. (OLMOS) DORADO DRILLING, INC. 14216 WR "K" A.W.P. (OLMOS) DORADO DRILLING, INC. 14125 WR "L" UNIT A.W.P. (OLMOS) DORADO DRILLING, INC. 14126 WRIGHT PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 14213 WRIGHT PEARSALL (AUSTIN CHALK) SOTEX OIL & GAS CORP. 07276 WRIGHT PILGRIM (AUSTIN CHALK) CEI OPERATING LLC 13074 WRIGHT RANCH EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 15655 WRIGHT RANCH PEARSALL (AUSTIN CHALK) BHEC CORPORATION 12659 WRIGHT RANCH E UNIT EAGLEVILLE (EAGLE FORD-1) CALLON (EAGLE FORD) LLC 19408 WRIGHT-AVANT "A" UNIT PEARSALL (AUSTIN CHALK) CALLON (EAGLE FORD) LLC 13187 WRIGHT-AVANT UNIT PEARSALL (AUSTIN CHALK) CALLON (EAGLE FORD) LLC 13140 WRIGHT-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17021 WRIGHT-KEATHLEY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16201 WRIGHT-MASON MOLLIE (AUSTIN CHALK) BOBCAT OPERATING 11688 WRIGHT, -B- SPILLER TRI-W OIL 03959 WRIGHT, E. KYOTE CREATIVE OIL AND GAS OP II, LLC 10111 WRIGHT, EMILY SOMERSET PETROSAURUS, INC. 11144 WRIGHT, EMORY KYOTE B-F SERVICE COMPANY 06737 WRIGHT, GOLDIE SPILLER OCCIDENTAL ENERGY COMPANY, INC. 09028 WRIGHT, H.R. PEARSALL (AUSTIN CHALK) CALLON (EAGLE FORD) LLC 12136 WRIGHT, J. D. SALT FLAT OILTEX, LLC 01476 WRIGHT, J. D. -A- SALT FLAT B-3 OIL CO. 04059 WRIGHT, JEFF SPILLER DELRAY OIL, INC. 03110 WRIGHT, P. SPILLER GINCO OPERATING CO. 03518 WRIGHT, PIERCE SPILLER GREAT PLAINS RESOURCES, INC. 01676 WRIGHT, PIERCE -A- SPILLER GREAT PLAINS RESOURCES, INC. 02001 WRIGHT, PIERCE EST. -B- SPILLER IRON ORCHARD OPERATING LLC 03422 WRIGHT, W. A. SPILLER GINCO OPERATING CO. 01668 WRIGHT, W. A. -A- SPILLER TRI-W OIL 01850 WRIGHT, W.A. -C- SPILLER TRI-W OIL 07440 WRK WRK (JACKSON 2250) NEWMAN OPERATING COMPANY 14375 WRY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 18008 WSRU ALLOCATION #1 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19391 WSRU ALLOCATION #2 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19373 WSRU ALLOCATION #3 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19374


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WSRU ALLOCATION #4 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19375 WSRU ALLOCATION #5 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19430 WSRU ALLOCATION #6 EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 19412 WTMB GADDIS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16442 WYATT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17397 WYATT, EDDIE LA VERNIA TANGLEHEAD OPERATING, LLC 00893 WYATT, GEORGE L. CHICON LAKE GENIE OIL COMPANY 02148 WYE RANCH 01 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16940 WYE RANCH 02 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16982 WYE RANCH 03 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17253 WYE RANCH 04 EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17255 WYMAN EAGLEVILLE (EAGLE FORD-1) LRH MANAGEMENT, LLC 18334 Y BAR CARRIZO SILVERBOW RESOURCES OPER, LLC 15664 Y BAR EF EAGLEVILLE (EAGLE FORD-1) SILVERBOW RESOURCES OPER, LLC 15440 Y BAR MCM EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16919 Y BAR RANCH EAGLEVILLE (EAGLE FORD-1) REPSOL OIL & GAS USA, LLC 15837 Y-BAR EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 15530 Y-BAR EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 17601 Y-BAR 'A' EAGLEVILLE (EAGLE FORD-1) TRINITY OPERATING (USG), LLC 17872 Y-BAR EAST EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18084 Y-BAR EAST UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18270 Y-BAR UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17978 Y-BAR UNIT C EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18268 Y-BAR WEST EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18302 Y-BAR WEST UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 18287 YAKESCH MILANO (GEORGETOWN) ALLIED OPERATING TEXAS, LLC 17155 YAKESCH PEARSALL (BUDA, S.) ALLIED OPERATING TEXAS, LLC 17702 YANCEY, J.W. CROWN, E. (NAVARRO) STARBURST ENERGY, INC. 05973 YANCY CROWN, E. (NAVARRO) BAYLOR OPERATING, LLC 15080 YANCY A CROWN, E. (NAVARRO) BAYLOR OPERATING, LLC 15163 YANCY B CROWN, E. (NAVARRO) BAYLOR OPERATING, LLC 15162 YANCY SWD PEARSALL (AUSTIN CHALK) BAYLOR OPERATING, LLC 15245 YANKEES A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19921 YANKEES B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19922 YANKEES D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19924 YANKEES E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19925 YANKEES F EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19929 YARBROUGH BRISCOE RANCH (EAGLEFORD) TRINITY OPERATING (USG), LLC 19092 YARBROUGH PEARSALL (AUSTIN CHALK) TRINITY OPERATING (USG), LLC 18967 YARBROUGH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15745 YEAGER, EWELL CHARLOTTE (NAVARRO) REC, LLC 03310 YEAGER, V. HASSE (BUDA) SEDCO RESOURCES INC 07798 YELLOWFIN A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19460 YELLOWFIN B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19482 YELLOWFIN C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19488 YELLOWFIN D EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19469 YELLOWFIN E EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19470 YO RANCH SWD EAGLEVILLE (EAGLE FORD-1) OILFIELD CLEANTECH WATER REC LLC 18452 YOAST YOAST CIBOLO ENERGY OPERATING, INC. 15030 YOLANDA VILLARREAL PEARSALL (AUSTIN CHALK) ALAMO OPERATING COMPANY, L. C. 15713 YOSKO A EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16829


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ YOSKO B EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 16767 YOSKO B MARCELINA CREEK (AUSTIN CHALK) RECOIL RESOURCES OPERATING, INC. 19545 YOUNG FAIRFIELD CIVRON PETROLEUM RES., LLC 18318 YOUNG LULING BRANYON R 40 EXC NORTH SOUTH OIL, LLC 19354 YOUNG, CHESTER LULING-BRANYON SHEFTS & SHEFTS, INC. 01047 YOUNG, DANIEL LA VERNIA DONOCO OIL COMPANY 10007 YOUNG, J. M. LULING-BRANYON EAGLE FORD OIL CO., INC. 03641 YOUNG, J. M. LULING-BRANYON E & W OIL, INC. 01035 YOUNG, J. M. LULING-BRANYON GINCO OPERATING CO. 02068 YOUNG, J. M. LULING-BRANYON SHEFTS & SHEFTS, INC. 02475 YOUNG, J. M. -A- LULING-BRANYON GINCO OPERATING CO. 01133 YOUNG, J. M. -B- LULING-BRANYON GINCO OPERATING CO. 04202 YOUNG, J. M., -C- LULING-BRANYON GINCO OPERATING CO. 03887 YOUNG, J. M.,-50 AC. LULING-BRANYON E & W OIL, INC. 04497 YOUNG, T. C. FAIRFIELD CRYSTAL RESOURCES, INC 02446 YOUNGBLOOD MINERVA-ROCKDALE WINCHESTER OIL & GAS LLC 01244 YOUNGBLOOD, J.W. MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 08357 YTUARTE -A- SOMERSET SEAGULL OPERATING CO., INC. 03567 YTURRI BRS -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11404 YTURRI GOTHAM SOMERSET GREAT PLAINS RESOURCES, INC. 11518 YTURRI-HARBO "1985" SOMERSET GREAT PLAINS RESOURCES, INC. 11389 ZACHRY FAIRFIELD BARNES OIL COMPANY 01944 ZAIONTZ EAGLEVILLE (EAGLE FORD-1) RECOIL RESOURCES OPERATING, INC. 15803 ZALMANEK, J. W. MILBUR (POTH) CXL ENERGY LLC 15081 ZAMORA UNIT I A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15983 ZAMORA UNIT II A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16165 ZAMORA WEST UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16175 ZAPPE COUSINS (QUEEN CITY 5740) NEWMAN OPERATING COMPANY 14311 ZAPPE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15321 ZAVADIL PILGRIM (AUSTIN CHALK) GALILEE OIL INVESTMENTS LLC 14701 ZAVADIL, LOUIS PILGRIM (AUSTIN CHALK) LONESTAR OPERATING, LLC 05695 ZAVALA ELAINE, N. (SAN MIGUEL SAND) BOTASCH OPERATING, LLC 12726 ZAVISCH A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 12066 ZAVISCH -A- A.W.P. (OLMOS) CLEARLY PETROLEUM, LLC 14506 ZAVISCH -751- WHEELER-MAG (1200) AURORA RESOURCES CORPORATION 07367 ZC UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 18309 ZCW EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15765 ZCW UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17096 ZCW UNIT B EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 16004 ZCW UNIT C EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 18313 ZEDLER DARST CREEK (BUDA) ENERGY 2000, INC. 14228 ZEDLER DARST CREEK (BUDA) GINCO OPERATING CO. 04016 ZEDLER SALT FLAT IRON ORCHARD OPERATING LLC 02883 ZEDLER "A" DARST CREEK (BUDA) OCCIDENTAL ENERGY COMPANY, INC. 02733 ZELLA CROMWELL RANCH AUSTIN PIERCE (AUSTIN CHALK) VENADO OPERATING COMPANY LLC 15240 ZELLA CROMWELL RANCH EAGLEVILLE (EAGLE FORD-1) VENADO OPERATING COMPANY LLC 15351 ZEPEDA EL VIEJO (SERPENTINE) MEB, LLC 17783 ZEPEDA, FERNANDO PEARSALL (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 05306 ZIDEK-MIKES UNIT NICKEL (AUSTIN CHALK) CHALLENGER OIL 06375 ZIENTEK NORTH UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 16041 ZIENTEK UNIT A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15707


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ZIENTEK UNIT B BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, L.L.C. 15613 ZIMMERELE, CLARA C. TAYLOR-INA GINCO OPERATING CO. 10613 ZIMMERMAN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16227 ZION A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19858 ZION B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19859 ZION C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 19857 ZIZINIA EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15884 ZLS EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 17026 ZOBOROSKI, FRED DARST CREEK (BUDA) GREAT PLAINS RESOURCES, INC. 03514 ZR UNIT "B" A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14241 ZR UNIT "C" A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14280 ZR UNIT "D" A.W.P. (OLMOS) EL DORADO GAS & OIL, INC. 14217 ZRZAVY UNIT BRISCOE RANCH (EAGLEFORD) VENADO OPERATING COMPANY LLC 18191 ZUEHL, EDGAR LA VERNIA PETRO-SHELL, INC. 10291 1ST LOCKHART NATIONAL BANK LULING-BRANYON WESTSTAR PETROLEUM CORPORATION 09481 3C UNIT PEARSALL (AUSTIN CHALK) VANCO OIL & GAS CORP. 16225 7K UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16183 7K UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16190 7K UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16841 7K UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16236 7K UNIT V LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 16235 74 RANCH SPECIAL UNIT EAST EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17193 74 RANCH SPECIAL UNIT WEST EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17708 74 RANCH-GUAJILLO UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 19590 76 RANCH MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, L.L.C. 15603 8OZARTH, MATTIE BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 03396 89 RANCH BIG WELLS (SAN MIGUEL) JB OIL & GAS WELL SERVICE 14725 89 RANCH PEARSALL (AUSTIN CHALK) JB OIL & GAS WELL SERVICE 12643

may 01, 2020 oil lease name index listing page 1 (olm003) · 4/30/2020 · adams ranch...

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