jul 29, 2021 railroad commission of texas page 159 …

JUL 29, 2021 RAILROAD COMMISSION OF TEXAS PAGE 159 LEASE NAME INDEX LISTING (GSM019) DISTRICT 02

------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FOUR WAY RANCH 22 LOLITA, DEEP (SIMPSON 8500) MCGOWAN WORKING PARTNERS, INC. 250487 'BULL REDFISH' UNIT 5 PANTHER REEF, SW. (FRIO G-1) LAMAR OIL & GAS, INC. 280204 'BULL REDFISH' UNIT 6 PANTHER REEF (FRIO CONS.) LAMAR OIL & GAS, INC. 283708 A. BANDUCH C 6H EAGLEVILLE (EAGLE FORD-2) BPX OPERATING COMPANY 288597 A. ETZLER GAS UNIT 2 MONT (WILCOX 10,900) CAPITAL STAR OIL & GAS, INC. 286594 A. VAUGHN UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263785 A. VAUGHN UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273490 A. VAUGHN UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 285540 A. VAUGHN UNIT A 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 286169 A. VAUGHN UNIT A 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 286178 A.G. HENKES GAS UNIT 2 MONT (WILCOX 10,900) CAPITAL STAR OIL & GAS, INC. 281628 A.G. HENKES GAS UNIT 3 MONT (WILCOX 10,900) CAPITAL STAR OIL & GAS, INC. 282919 A.G. HENKES GAS UNIT 4 MONT (WILCOX 10,900) CAPITAL STAR OIL & GAS, INC. 284848 ABBOTT, S. A. 5 LOLITA, DEEP (SIMPSON 8500) MCGOWAN WORKING PARTNERS, INC. 121497 ABRAMEIT 1 WEESATCHE, NE. (WILCOX 10,030) KEBO OIL & GAS, INC. 174876 ABRAMEIT 2 CONSOLIDATED (WILCOX 10500) KEBO OIL & GAS, INC. 181326 ACE WALKER NO.1 2ST FT. MERRILL, NORTH (11800) JAMEX, INC. 198096 ADAMEK UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 274673 ADAMEK UNIT 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 285563 ADIX UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 274297 ADIX UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 275766 ADIX UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288342 ADIX UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288378 ADIX UNIT A 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288343 ADIX UNIT A 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288334 ADIX UNIT A 701 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290861 ADIX UNIT A 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 289041 ADIX UNIT A 702 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 288781 AFFLERBACH 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 263733 AFFLERBACH 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268534 AGNES WEST 6 VICTORIA TT OPERATING, LLC 263859 ALAMO NATIONAL BANK 1 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 076579 ALBERT GORDON GAS UNIT 6 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 193185 ALBERT SAGER GAS UNIT 5 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 232055 ALBERT SAGER GAS UNIT 6 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 238005 ALBERT SMOLIK UNIT 1 5 WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 161752 ALBERTA GAYLE 11 MAURBRO (5530) KD ENERGY, LLC 229707 ALBRECHT 1 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 286327 ALBRECHT 1 WEESATCHE, NE. (HOLT FB A) HURD ENTERPRISES, LTD. 188997 ALBRECHT 1A BRANDT HURD ENTERPRISES, LTD. 212127 ALBRECHT 3 WEESATCHE, NE. (WILCOX) HURD ENTERPRISES, LTD. 286114 ALBRECHT 4 MISSION VALLEY, W.(WILCOX 10600) TRANSPACIFIC ENERGY, LLC 179346 ALBRECHT 5 MISSION VALLEY, W.(WILCOX 10600) TRANSPACIFIC ENERGY, LLC 228590 ALBRECHT, A. M. 1 C BOYCE (RECKLAW) NOG PRODUCTION & OPERATING LLC 000963 ALBRECHT, A. M. 1 T BOYCE (WILCOX C SLICK) NOG PRODUCTION & OPERATING LLC 000977 ALBRECHT, ARCO V. 1 CABEZA CREEK, S. (BEAUCHAMP) DEWBRE PETROLEUM CORPORATION 119189 ALBRECHT, EMMETT 1 WEESATCHE, NE. (HOLT FB A) HURD ENTERPRISES, LTD. 268023 ALBRECHT, ESTELLE 1 JOBAR (YEGUA) TIDEWATER MINERALS CORPORATION 167796 ALBRECHT, P. A. 1 BOYCE (PETTUS) BAYPORT OPERATING, INC. 079808 ALBRECHT, P. A. -B- 1 BOYCE (RECKLAW) BAYPORT OPERATING, INC. 090941 ALBRECHT, V. 3 JOBAR (YEGUA) ROCK RESOURCES, INC. 249870


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ALDIS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264227 ALEXANDER GAS UNIT 1 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 255054 ALEXANDER GAS UNIT 1 2 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 267294 ALEXANDER 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267012 ALEXANDER 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268794 ALEXANDER 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271858 ALEXANDER 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271721 ALEXANDER 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271811 ALEXANDER-WESSENDORFF 1 (SA) A3 A 3H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 288099 ALEXANDER-WESSENDORFF 1 (SA) A3 A 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288097 ALEXANDER-WESSENDORFF 1 (SA) A4 A 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287829 ALEXANDER-WESSENDORFF 1 (SA) A5 A 5H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 288185 ALEXANDER-WESSENDORFF 1 (SA) A6 A 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287858 ALEXANDER-WESSENDORFF 2 (SA) A1 A 1H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 288406 ALEXANDER-WESSENDORFF 2 (SA) A1 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288376 ALEXANDER-WESSENDORFF 2 (SA) A2 A 2H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 287664 ALEXANDER-WESSENDORFF 2 (SA) A2 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287639 ALEXANDER, M. S., ET AL 1 SPEARY (WILCOX 9500) P1 ENERGY, LLC 004228 ALGEA GAS UNIT 2 ORANGEDALE (LULING, LOWER) WAGNER OIL COMPANY 147028 ALGEA GAS UNIT 3 THEIS, SOUTH(SLICK FIRST) MAGNUM ENGINEERING COMPANY 212589 ALLEN 1 PROVIDENT CITY (2400) MOSAIC OIL LLC 135474 ALLEN 1A PROVIDENT CITY (2400) MOSAIC OIL LLC 140819 ALLEN GAS UNIT 1 PROVIDENT CITY (WILCOX 9,100) HILCORP ENERGY COMPANY 289358 ALLEN, B. 1 RAMIRENA (Y- 5) MAROCO 136947 ALLEN, B. 2 RAMIRENA (Y- 5) HAMMIT PETROLEO 129253 ALLEN, B. 3 E RAMIRENA (Y-15A) MAROCO 003849 ALLEN, B. 3 G RAMIRENA (Y- 5) MAROCO 003848 ALTMAN 1 BOYCE (HOCKLEY) ESTATE OF JAMES L. NELSON 145726 ALTMAN 1 BOYCE (RECKLAW) ESTATE OF JAMES L. NELSON 218021 ALTMAN F 2 BOYCE (PETTUS) ESTATE OF JAMES L. NELSON 111335 ALTMAN, WILLIAM B. 1 BOYCE (RECKLAW) ESTATE OF JAMES L. NELSON 089864 ALTMAN, WM. 2 BOYCE (RECKLAW) ESTATE OF JAMES L. NELSON 098996 ALUMINUM COMPANY OF AMERICA FEE 9 LAVACA BAY (F-40-B) NEUMIN PRODUCTION COMPANY 113423 ALVARADO 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268861 AMANDA OLSON GAS UNIT 3 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 175045 AMANDA OLSON GAS UNIT 4 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 190049 AMANDA OLSON GAS UNIT 5 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 192590 AMANDA OLSON GAS UNIT 6 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 193241 AMOCO FEE 2 LOST FORK (YEGUA 6500) TAG OPERATING COMPANY, INC. 139127 ANDERSON A 2R MONT (WILCOX 10640) CAPITAL STAR OIL & GAS, INC. 282194 ANDERSON, MARY ALICE ET AL "A" 3 FAGAN (1900) MARAN OIL COMPANY 269190 ANDERSON, MARY ALICE ET AL "A" 3 FAGAN (2350) MARAN OIL COMPANY 147085 ANGERSTEIN, E. F. UNIT #2 2 U COOK, S. (WILCOX, LO. 10,850) AURORA RESOURCES CORPORATION 034489 ANGERSTEIN, H O 1 COTTONWOOD CREEK, S. (FRIO 2300) MAGNUM PRODUCING, LP 207897 ANN 1 TELFERNER, NORTH (3600 FRIO) CML EXPLORATION, LLC 272726 ANN FRIAR THOMAS 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285856 ANN FRIAR THOMAS 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285862 ANN FRIAR THOMAS 3H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285863 ANN FRIAR THOMAS 4H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285864 ANN FRIAR THOMAS 5H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285875 ANN FRIAR THOMAS 6H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285876


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ANNIE REILLY ET VIR 13 GRETA (L- 8) HILCORP ENERGY COMPANY 281422 ANNIE REILLY ET VIR 17 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 272304 APPELT GAS UNIT 1 L WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 229830 APPELT GAS UNIT 1 U WORD (WILCOX, LOWER) SULPHUR RIVER EXPLORATION, INC. 251413 APPELT GAS UNIT 2 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 233311 APPELT GAS UNIT 3 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 234774 APPLING 1 APPLING DEEP (FRIO) PROGENIES OPERATING LLC 216627 APPLING FARMS 1 VIENNA (8450) MAGNUM PRODUCING, LP 181968 APPLING-STOVALL 1A APPLING (SEG 5 7500) KAISER-FRANCIS OIL COMPANY 267693 ARC - THOMSON - BARROW 3 BURKES RIDGE (VKSBG 4800) AURORA RESOURCES CORPORATION 229827 ARC THOMSON-BARROW 5 LAURA THOMSON,S.E. (CHAMBERLAIN) AURORA RESOURCES CORPORATION 280559 ARCO COOLEY 3 MISSION VALLEY,W(WCX 10600 SEG2) ENDEAVOR NATURAL GAS, LP 115707 ARCO COOLEY 4 MISSION VALLEY, W.(WILCOX 10600) ENDEAVOR NATURAL GAS, LP 182781 ARCO SANGER ESTATE 2 MOUNTAIN VIEW (WILCOX 9350) WAGNER OIL COMPANY 111042 ARCO SANGER ESTATE 3 MOUNTAIN VIEW (WILCOX 10400) WAGNER OIL COMPANY 113560 ARNDT A 9H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283619 ARNDT A 10H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283624 ARNDT A 11H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283655 ARNDT A 13H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283368 ARNECKE 1 WEESATCHE, SW. (YEGUA 4750) SADDLE LAKE ENERGY, LLC 201408 ARNECKE A 1 WILDCAT SADDLE LAKE ENERGY, LLC 274972 ARNOLD 1 OAKVILLE (WILCOX CONS.) WELDER EXPLORATION & PROD., INC. 235468 ARNOLD UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263531 ARNOLD UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272855 ARNOLD UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266453 ARNOLD UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269842 ARNOLD, DENNIS ET AL 2 GOTTSCHALT (RECKLAW 7300) PROGENIES OPERATING LLC 001736 ARNOLD, KARL G. 1 MINERAL, WEST (FRIO) TRANS WEST OIL & GAS, INC. 071174 ARTHUR RICHTER GAS UNIT 1 GEORGE WEST, WEST (7900) AURORA RESOURCES CORPORATION 001712 ASHLAND GAS UNIT 1 CAESAR, SOUTH (5650) RINCON PETROLEUM CORPORATION 190807 ASHLAND-EBERSTADT A 1 CAESAR, E. (5800) EQUIPMENT HOT LINE 124335 ATKINSON FIELD GAS UNIT #2 1 ATKINSON (4250) KEBO OIL & GAS, INC. 048063 ATKINSON FIELD GAS UNIT #4 2 ATKINSON (4250) KEBO OIL & GAS, INC. 054088 ATKINSON GAS STORAGE 1 ATKINSON (4250) KEBO OIL & GAS, INC. 184137 ATKINSON, MARY E. 1 RICHARD ADCOCK (5500) MARWELL PETROLEUM LTD PARTNRSHIP 003970 ATKINSON, W. H. 1 GREEN (QUEEN CITY) MERI-TECH PRODUCTION CO., INC. 095538 ATKINSON, W. H. 3 GREEN, E. (QUEEN CITY) MERI-TECH PRODUCTION CO., INC. 100094 ATKINSON, W.H. 920 1 GREEN, E. (QUEEN CITY) MERI-TECH PRODUCTION CO., INC. 140237 ATOKA-GOHLKE 1 SPEARY, EAST (WILCOX 9800) MASTODON OPERATING COMPANY, LLC 207018 AUNT AUDREY 1 YOWARD (9200) BRITANCO, L.L.C. 223302 AUSTIN, P. R. 6 POWDERHORN (2-A) BEP OPERATING, LLC 145421 B. B. GAYLE 14 C CLIP (3580) J&G OIL & GAS 249998 B. B. GAYLE 14 T CLIP (VICKSBURG, LOWER) J&G OIL & GAS 242789 B. U. - SPIELHAGEN 2 BURNELL (SLICK, UPPER) FLETCHER OPERATING, LLC 097907 B. U. LULING-BOYCE A 24 BURNELL (SLICK) FLETCHER OPERATING, LLC 044495 B. U. MAGNOLIA-INGRAM 1 BURNELL (SLICK) FLETCHER OPERATING, LLC 039706 B. U. PAN AMERICAN-SPIELHAGEN 9 BURNELL (SLICK) FLETCHER OPERATING, LLC 046170 B. U. STANOLIND-SPIELHAGAN 8 BURNELL (REKLAW) FLETCHER OPERATING, LLC 022796 B. U.-AMOCO-SPIELHAGEN 12 BURNELL (SLICK, UPPER) FLETCHER OPERATING, LLC 074279 B. U.-LULING-BOYCE B 26 BURNELL (LULING) WELDER EXPLORATION & PROD., INC. 001046 B. U.-MOBIL-STIEREN 1 BURNELL (LULING) WAGNER OIL COMPANY 038057


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ B. U.-STANOLIND-LYONS 6 BURNELL (SLICK) FLETCHER OPERATING, LLC 062616 B. U.-UNION-HALL 1 BURNELL (LULING) WAGNER OIL COMPANY 001054 B. U.-UNION-NORTON-SPIELHAGEN 2 BURNELL (REKLAW) FLETCHER OPERATING, LLC 001029 B.U. PAN AMERICAN - RUHMAN B3 BURNELL (SLICK) FLETCHER OPERATING, LLC 151430 B.U. UNION-NORTON-SPIELHAGEN 1 BURNELL (REKLAW) FLETCHER OPERATING, LLC 258528 B.U.-BOYCE W 1 BURNELL (REKLAW) FLETCHER OPERATING, LLC 177896 B&D 1 SPEAKS, SW (MIDDLE WILCOX-CONS.) RINCON PETROLEUM CORPORATION 277508 BABB 3R EL TORO MAX, W. (EY-2) ATLAS OPERATING LLC 273964 BABER 1 PROVIDENT CITY (WILCOX 9970) HILCORP ENERGY COMPANY 135076 BADE 1 SECOND CHANCE (ROEDER) J.W. SERVICE COMPANY 155041 BAECKER 1 C ANDER, SOUTH (2300) MOORE OIL & GAS, INC. 089299 BAILEY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269105 BAILEY-RETZLOFF UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270325 BAILEY-RETZLOFF UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268957 BAILEY-RETZLOFF UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269282 BAILEY-RETZLOFF UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282415 BAILEY-RETZLOFF UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282416 BAILEY-RETZLOFF UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282420 BAILEY-RETZLOFF UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283205 BAILEY-RETZLOFF UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281178 BAILEY-RETZLOFF UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281179 BAILEY-RETZLOFF UNIT 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280519 BAILEY-RETZLOFF UNIT 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280327 BAILEY-RETZLOFF UNIT 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280328 BAILEY-RETZLOFF UNIT 13H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280250 BAILEY-RETZLOFF UNIT 14H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279839 BAILEY-RETZLOFF UNIT 508H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280943 BAILEY-RETZLOFF UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 282647 BAILEY-RETZLOFF UNIT AC 7H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280523 BAILEY-RETZLOFF UNIT AC 9H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279990 BAILEY-RETZLOFF UNIT AC 10H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280030 BAILEY-RETZLOFF UNIT AC 11H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280029 BAILEY-RETZLOFF UNIT AC 12H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280525 BAILEY, IVA 2 SIBLEY (3250) RAWHIDE OPERATING, INC. 234331 BAKER 1 GOLIAD, WEST (10,600 SD) VAQUERO OPERATING 139234 BAKER FAMILY TRUST 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 245465 BAKER FAMILY TRUST 2 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 255356 BAKER FAMILY TRUST 3 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 255736 BAKER FAMILY TRUST 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271610 BAKER FAMILY TRUST 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288679 BAKER FAMILY TRUST 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288830 BAKER FAMILY TRUST 7 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288683 BAKER FAMILY TRUST 8 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 289324 BAKER FAMILY TRUST 9 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288887 BAKER FAMILY TRUST 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 288785 BAKER FAMILY TRUST 702 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 288729 BAKER-BARNES 1 GATA (WILCOX 12500) REO OPERATING LLC 179898 BAKER-BARNES 2 GATA (WILCOX 12500) LAVACA RIVER OPERATING CO., LLC 177891 BAKER, E. 2 MIKESKA (MASSIVE WILCOX) PROLINE ENERGY RESOURCES INC 175922 BAKER, EARL 1A BAKER (WILCOX 10000) MAGNUM PRODUCING, LP 127436 BALLARD 1 WILDCAT WELDER EXPLORATION & PROD., INC. 239253


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BALLARD 1 RUDMAN (CANNAN SD. 9720) WELDER EXPLORATION & PROD., INC. 227236 BALLARD, CLAUDE 1 RUDMAN (CANNAN SD. 9720) FLETCHER OPERATING, LLC 225140 BAMMERT 3 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 200768 BAMMERT 4 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 207638 BAMMERT 5 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 206412 BAMMERT 6 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 215482 BAMMERT -B- 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 215772 BAMMERT A 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 220205 BARBER 1 BLANCO CREEK (FRIO 4700-CARTER) CORE E & P CORP. 137030 BARBER RANCH 2 BLANCO CREEK (6600) MOMENTUM ENERGY CORPORATION 184139 BARBOZA UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264095 BARBOZA UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271132 BARBOZA UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271148 BARBOZA UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270944 BARBOZA UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270866 BARBOZA UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280727 BARBOZA UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288627 BARBOZA UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283542 BARBOZA UNIT 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283544 BARBOZA UNIT 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283545 BARBOZA UNIT 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283552 BARBOZA UNIT 13H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287802 BARBOZA UNIT 502H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280728 BARBOZA UNIT AC 8H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 283553 BARBOZA UNIT AC 13H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 282452 BARBOZA UNIT AC 14H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 286665 BARGMANN TRUST UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266766 BARGMANN TRUST UNIT B 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282675 BARGMANN TRUST UNIT B 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282894 BARGMANN TRUST UNIT B 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282423 BARGMANN TRUST UNIT B 15 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282461 BARGMANN TRUST UNIT B 15 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 282453 BARGMANN TRUST UNIT B 20 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282438 BARGMANN TRUST UNIT B 22 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282867 BARGMANN TRUST UNIT B 22 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 282912 BARNES 1 GATA (14,100 SAND) VIPER S.W.D., LLC 247281 BARNES, LEON 2 GATA (WILCOX 11,800 SAND) XTO ENERGY INC. 253217 BARNES, LEON 2 GATA (WILCOX 12500) XTO ENERGY INC. 174114 BARNES, LEON 3 WILDCAT XTO ENERGY INC. 200940 BARNES, LEON 3 GATA (WILCOX 11,800 SAND) XTO ENERGY INC. 198831 BARNES, LEON 3 GATA (WILCOX 12500) XTO ENERGY INC. 174746 BARNES, LEON 4 GATA (WILCOX 12500) XTO ENERGY INC. 174748 BARNES, LEON 6-L GATA (WILCOX 12500) XTO ENERGY INC. 177114 BARNES, LEON 6-U GATA (WILCOX 10,600) XTO ENERGY INC. 178858 BARNETT, P. M. UNIT 1 KELLERS CREEK, S. (8850) PONTIAC OIL, INC. 134558 BARRE 1 GUN POINT (WILCOX MIDDLE, 11000) WAGNER OIL COMPANY 215306 BARROW 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266958 BARROW 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 269567 BARROW 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 270125 BARROW 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 269397 BARROW 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276230


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BARROW 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276235 BARROW 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276335 BARROW 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276448 BARRY 2 ARNECKEVILLE, S (Y-7) FLETCHER OPERATING, LLC 237717 BARTLETT 1 OAKVILLE (MID WILCOX 9200) FAULCONER, VERNON E., INC. 159357 BARTLETT 2 OAKVILLE (MID WILCOX 9200) FAULCONER, VERNON E., INC. 166666 BASES LOADED 1 CHOATE, S. (WILCOX 8500) MARWELL PETROLEUM LTD PARTNRSHIP 182578 BASS, M. F. 1 PRIDHAM LAKE (1560) CXL ENERGY LLC 069561 BASS, M. F. 3 PRIDHAM LAKE (2450) CXL ENERGY LLC 069563 BAST, C. H. - MINERAL UNIT 1 MINERAL (MACKHANK, LO.) RINCON PETROLEUM CORPORATION 070765 BATEMAN 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269103 BATEY-POWELL GAS UNIT 1 REA-GOL (13800 SD) GAITHER PETROLEUM CORPORATION 211683 BAUER 1 MCFADDIN, NORTH (6000) AGOIL, INC. 089414 BAUER, CLAIRE MARY ET VIR 4-C TOM OCONNOR (4200) HILCORP ENERGY COMPANY 145883 BAUER, MADDELINE ET AL 1 HEYSER (3550) VIOLA PROD., INC. 118427 BAUER, MARY CLAIRE ET VIR 4-T TOM O'CONNOR (5350 SAND) HILCORP ENERGY COMPANY 137860 BAUER, MARY CLAIRE ET VIR 6 GRETA (L- 6 WEST) HILCORP ENERGY COMPANY 212571 BAUMANN GAS UNIT 1H WARMSLEY, S. (10550) FAULCONER, VERNON E., INC. 251990 BAUMANN GAS UNIT 2H WARMSLEY, S. (10550) FAULCONER, VERNON E., INC. 250086 BAUMANN UNIT A DEW 1H EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 273143 BAUMANN UNIT A DEW 2H EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 273146 BAYLOR UNIVERSITY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269564 BBG MIXON UNIT 6H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287896 BBG MIXON UNIT 8H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287920 BBG MIXON UNIT 9H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 286517 BBG MIXON UNIT 9H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 286244 BBG MIXON UNIT 10H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 285302 BBG MIXON UNIT 11H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 286518 BBG MIXON UNIT 11H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 285670 BBG MIXON UNIT 17H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 288246 BBG MIXON UNIT 18H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 287084 BBG MIXON UNIT 18H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 285671 BBG MIXON UNIT 19H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 286916 BBG MIXON UNIT 19H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 286645 BEACHAMP 3 ALBRECHT (HOCKLEY) PHILLIP, DAVID MARTIN 116878 BEALL ESTATE 1 LAGARTO (2300) FORAN, LESTER, TRUSTEE 002573 BEAMON, R. E. ET AL 1 EL TORO, SOUTH (5650 SD.) VOTAW PRODUCTION COMPANY LLC 114616 BEAR CREEK RANCH 2 SINGLETON, E. (HOCKLEY) BELLOWS OPERATING CO., L. C. 157869 BEARDSLEY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266286 BEASLEY 1 YOUGEEN, SOUTH (3200) WELDER EXPLORATION & PROD., INC. 184646 BECK 1 HAILEY (PETTUS) CONTINENTAL EXPLORATION, L.L.C. 168725 BEDNORZ 2 WILDCAT RAVEN FOREST OPERATING, LLC 276789 BEGO 1 ALKEK, WEST (FRIO 3700) NORTH SHORE ENERGY, L.L.C. 190577 BEGO 1 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 152752 BEGO 4 ALKEK, WEST (FRIO 3850) CRESTON PETROLEUM CORP. 175330 BEGO GAS UNIT 1-C BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 168118 BEGO GAS UNIT 3 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 214441 BEGO TRUST 1H KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 162278 BEHRENS GAS UNIT 1 4 BRANDT (PETTUS-CM CONS.) RAVEN FOREST OPERATING, LLC 106730 BELICEK 1 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 213441 BELICEK 3 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 237634


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BELITZ 1 BELITZ (9000 WILCOX) FLETCHER OPERATING, LLC 207991 BELITZ, HENRY 1 BELITZ (9000 WILCOX) BETTIS, BOYLE & STOVALL 125162 BELL, W. T. GAS UNIT 2 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 205709 BELL, W. T. GAS UNIT 3 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 207937 BELL, W. T. GAS UNIT 4 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 212472 BELL, W. T. GAS UNIT 5 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 216697 BELL, W. T. GAS UNIT 6 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 216418 BELL, W. T. GAS UNIT 7 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 219810 BELL, W. T. GAS UNIT 8 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 221829 BENHAM 4 PAWNEE, S. (WILCOX) ENSIGN OPERATING LLC 282730 BENHAM GAS UNIT A 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 205681 BENHAM GAS UNIT A 2 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 212328 BENHAM, ERNA P. GAS UNIT 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 069020 BENHAM, ERNA P. GAS UNIT 5 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 212330 BENNER 5 WILDCAT TMR EXPLORATION, INC. 224353 BENNER, WILLIAM 1 PROVIDENT CITY (SOUTH YEGUA K) TMR EXPLORATION, INC. 151107 BENNER, WM. 1 PROVIDENT CITY (WILCOX 9,000) TMR EXPLORATION, INC. 003833 BENNER, WM. 4 PROVIDENT CITY (FRIO 3550) TMR EXPLORATION, INC. 279422 BENNER, WM. 4 PROVIDENT CITY (WILCOX B) TMR EXPLORATION, INC. 192568 BENNETT 2 LA SALLE (6300) DOUBLE PLAY OIL & GAS, INC 226799 BENNETT 3 LA SALLE (6550) DOUBLE PLAY OIL & GAS, INC 238234 BENNETT 4 LA SALLE (6310) DOUBLE PLAY OIL & GAS, INC 244760 BENNETT 5 LA SALLE (6600) DOUBLE PLAY OIL & GAS, INC 249354 BENNETT STATE 1 MIKESKA (10280) VT VISTATEX ENERGY LLC 111599 BENNETT STATE 5 MIKESKA (10500) VT VISTATEX ENERGY LLC 126558 BENNETT STATE GAS UNIT 2 MIKESKA (10500) VT VISTATEX ENERGY LLC 112998 BENNETT STATE GAS UNIT 3 MIKESKA (10500) VT VISTATEX ENERGY LLC 116557 BENNETT-STATE G.U. 4 MIKESKA (YEGUA 4990) VT VISTATEX ENERGY LLC 136001 BENNETT, ET AL 1 LA SALLE (5300) DOUBLE PLAY OIL & GAS, INC 278447 BENNETT, ET AL 6 LA SALLE (6530) DOUBLE PLAY OIL & GAS, INC 251098 BENNETT, ET AL 7 LA SALLE, NE. (6500) DOUBLE PLAY OIL & GAS, INC 257329 BENNETT, ET AL 8 LA SALLE, N. (6300) DOUBLE PLAY OIL & GAS, INC 258714 BENNETT, J. M. "R" 2 WEST RANCH (WARD) ALLEGIANT RESOURCES, LLC 205829 BENNETT, L.L. ET AL GAS UNIT 1 LIMES (WILCOX 9900) SANDEL OPERATING COMPANY 100334 BENNETT, W. H. 2 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 121539 BENNETT, W. H. 4 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 058370 BENNETT, W. H. 6 HEYSER (5400 #2) FREDCO 071445 BENNETT, W. H. 7 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 122643 BENNETT, W. H. 9 HEYSER (5400 #3) MCGOWAN WORKING PARTNERS, INC. 061285 BENNETT, W. H. 11 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 121223 BENNETT, W. H. 16 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 051674 BENNETT, W. H. 17 HEYSER (6300) FREDCO 159365 BENNETT, W. H. 20 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 057105 BENNETT, W. H. A 2 HEYSER (8300) MCGOWAN WORKING PARTNERS, INC. 154262 BENNETT, W. H. (PF) 1 HEYSER (5400 #2) FREDCO 090798 BENNETT, W. H. (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089490 BENNETT, W.H. 8 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 124198 BERGER 1 MAETZE (2600) EAGLEFORD OPERATING, INC. 099940 BERRY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268096 BERTHA ANDERSON GAS UNIT 1R HALLETTSVILLE, SOUTH (ANDERSON) CAPITAL STAR OIL & GAS, INC. 071799 BERTHA ANDERSON GAS UNIT 3 MONT (WILCOX 10640) CAPITAL STAR OIL & GAS, INC. 286560


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BERTHA ANDERSON GAS UNIT 4 MONT (WILCOX 10640) CAPITAL STAR OIL & GAS, INC. 288214 BERTHA ANDERSON GAS UNIT 5 MONT (WILCOX 10,900) CAPITAL STAR OIL & GAS, INC. 290264 BESSIE HACKNEY UNIT 1 SPEARY (ROEDER 9100) P1 ENERGY, LLC 233673 BEST-FENNER UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289125 BEST-HUTH UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289136 BETHKE 1 MARSHALL (MIDDLE WILCOX) NOG PRODUCTION & OPERATING LLC 249063 BETHKE 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 216449 BETHKE 2 MARSHALL (MIDDLE WILCOX) NOG PRODUCTION & OPERATING LLC 266666 BETHKE ROUDON GAS UNIT 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 247279 BETTY KENNEDY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268756 BETTY KENNEDY UNIT A 1MW SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266485 BETTY KENNEDY UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268789 BETTY KENNEDY UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 267401 BETTY KENNEDY UNIT A 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269507 BETTY KENNEDY UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268797 BETTY KENNEDY UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272412 BEV-ZAN 1 CABEZA CREEK, SOUTH (M. W. 8300) NOG PRODUCTION & OPERATING LLC 207246 BEV-ZAN 2 CABEZA CREEK, S. (RECKLAW 7700) NOG PRODUCTION & OPERATING LLC 229791 BEYNON 4381 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 242927 BIEMER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266117 BIG EASY 1 WEESATCHE, NE. (HOLT FB A) KEBO OIL & GAS, INC. 191774 BIG OAK A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 269044 BIG OAK C 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284633 BIG OAK C 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284634 BIG TWELVE 1 BIG 12 (YEGUA AY-3) SUE-ANN OPERATING, L.C. 198400 BING 1 SPEAKS, S.W. (12010) MAGNUM PRODUCING, LP 133437 BIRD 1 OAKVILLE (WILCOX CONS.) PROLINE ENERGY RESOURCES INC 235003 BISSETT, CLARK 2 HOCKLEY (4630) WELDER EXPLORATION & PROD., INC. 104814 BLACKBURN 2 BERCLAIR, SOUTH (2300) DEWBRE PETROLEUM CORPORATION 220410 BLACKBURN 3 WILDCAT DEWBRE PETROLEUM CORPORATION 206481 BLACKBURN 4 BERCLAIR, SOUTH (2300) DEWBRE PETROLEUM CORPORATION 200799 BLACKBURN 47 BERCLAIR (VICKSBURG, SOUTHEAST) B.P. PRODUCTIONS INC. 164208 BLACKJACK UNIT 'B' 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285877 BLACKJACK UNIT 'B' 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285878 BLACKJACK UNIT D 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285756 BLACKJACK UNIT D 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285757 BLACKJACK UNIT D 3H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285879 BLACKJACK UNIT D 4H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285880 BLACKJACK UNIT D 5H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285881 BLACKJACK UNIT D 6H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285882 BLACKJACK UNIT E 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274533 BLACKWELL 1H KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 161807 BLACKWELL 2 KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 169128 BLACKWELL A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 263809 BLACKWELL A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281908 BLACKWELL A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281910 BLACKWELL A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281939 BLACKWELL A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281943 BLACKWELL A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281904 BLACKWELL A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282035 BLACKWELL A 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282080


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BLACKWELL GAS UNIT 1 D 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268541 BLACKWELL GAS UNIT 1 D 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268219 BLACKWELL GAS UNIT 2 1 KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 250715 BLACKWELL GAS UNIT 2 2 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 265486 BLACKWELL GAS UNIT 2 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268459 BLACKWELL GAS UNIT 2 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272516 BLACKWELL GAS UNIT 2 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 274904 BLACKWELL TRUST GAS UNIT 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 212281 BLACKWELL TRUST GAS UNIT 2 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 217905 BLACKWELL TRUST GAS UNIT 3 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 223762 BLACKWELL TRUST GAS UNIT 4 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 226817 BLACKWELL TRUST GAS UNIT 5 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 231207 BLACKWELL-EYHORN (SA) B6 B 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284142 BLACKWELL-EYHORN (SA) B7 B 7H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284087 BLACKWELL-EYHORN (SA) B8 B 8H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283974 BLACKWELL, W. A. GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266169 BLAIN, LOVEL A III 2 GUN POINT (WILCOX LOWER, GRAY) URBAN OIL & GAS GROUP, LLC 119308 BLAIN, LOVEL A. III 2 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 260758 BLANCO 1 MARSHALL (MIDDLE WILCOX) VAQUERO OPERATING 218933 BLOCK 75 UNIT 1 CLAYTON (BLOCK 85 SD) HEDRICK PRODUCTION INC. 099252 BLOCK 75 UNIT 2 CLAYTON (MASSIVE) HEDRICK PRODUCTION INC. 281627 BLOCK 75 UNIT 2 CLAYTON (WILCOX 7360) HEDRICK PRODUCTION INC. 263461 BLOCK 75 UNIT 3 CLAYTON (SLICK 6500) HEDRICK PRODUCTION INC. 198181 BLOCK 75 UNIT 3-L CLAYTON (MASSIVE) HEDRICK PRODUCTION INC. 171548 BLOCK 75 UNIT 3-U CLAYTON (BLOCK 75 SD) HEDRICK PRODUCTION INC. 137182 BLOCK 75 UNIT 4 CLAYTON (WILCOX 7360) HEDRICK PRODUCTION INC. 240043 BLOCK 76 UNIT 2 CLAYTON (BLOCK 72 SD.) HEDRICK PRODUCTION INC. 203533 BLOCK 76 UNIT 2 CLAYTON (WILCOX 7360) HEDRICK PRODUCTION INC. 130278 BLOCK 76 UNIT 3 CLAYTON (WILCOX 7360) HEDRICK PRODUCTION INC. 133397 BLOCK 85 UNIT 3 CLAYTON (BLOCK 85 SD) HEDRICK PRODUCTION INC. 169313 BLOCK 85 UNIT 4 CLAYTON (WILCOX 7360) HEDRICK PRODUCTION INC. 139134 BLOCK 86 UNIT 2 CLAYTON (MASSIVE) HEDRICK PRODUCTION INC. 191444 BLOCK 86 UNIT 2 L CLAYTON (BLOCK 86 SD) HEDRICK PRODUCTION INC. 057692 BLOCK 86 UNIT 2-U CLAYTON (BLOCK 85 SD) HEDRICK PRODUCTION INC. 183237 BLOCK 86 UNIT 4 CLAYTON (BLOCK 75 SD) HEDRICK PRODUCTION INC. 195692 BLOCK 86 UNIT 4 CLAYTON (BLOCK 85 SD) HEDRICK PRODUCTION INC. 144903 BLOCK 86 UNIT #3 3 CLAYTON (MASSIVE) HEDRICK PRODUCTION INC. 176647 BLUDAU, L. A. UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 102953 BLUDAU, L. A. UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 166965 BLUHM GU1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268540 BLUHM UNIT 2 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 188518 BLUNTZER 1 MELROSE (9500) NOG PRODUCTION & OPERATING LLC 200770 BLUNTZER 1 WEESATCHE, WEST (MACKHANK) NOG PRODUCTION & OPERATING LLC 284057 BMB INVESTMENTS 1ST BENBOW (WILCOX 10,000) MAGNUM PRODUCING, LP 272206 BODDEN 1 GEORGE WEST, WEST (10200) KEBO OIL & GAS, INC. 257101 BODDEN FROST GAS UNIT 1 2 L GEORGE WEST, WEST (10200) SANDEL OPERATING COMPANY 100977 BODDEN FROST GAS UNIT 1 2 U GEORGE WEST, WEST (9500) SANDEL OPERATING COMPANY 100629 BODDEN FROST GAS UNIT 1 3 L FANT (WILCOX 10200) SANDEL OPERATING COMPANY 103176 BODDEN FROST GAS UNIT 1 3 U FANT (WILCOX 9500) SANDEL OPERATING COMPANY 103175 BODDEN-FROST GAS UNIT 1 4 FANT (WILCOX 9500) SANDEL OPERATING COMPANY 251488 BODDEN-FROST GU 1 4 FANT (WILCOX 10000) SANDEL OPERATING COMPANY 166869


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BOEHL 1R POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 279073 BOEHL 2 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 238215 BOENIG 1 LA ROSA, NORTH (5700) PATRICO OIL CO. 002465 BOENING UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 271613 BOENING UNIT 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276331 BOENING UNIT 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288232 BOENING UNIT 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288201 BOENING UNIT 6L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288772 BOENING UNIT 6U DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288774 BOENING UNIT A 1H EAGLEVILLE (EAGLE FORD-2) TEAL OPERATING, LLC 269263 BOERM, MINNIE 1 SPEARY (WILCOX 9500) OKIE OPERATING COMPANY, LTD. 022963 BOLDT 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266960 BOLDT 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266363 BOLDT 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276615 BOLDT 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276234 BOLDT 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276233 BOLDT 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276347 BOLDT 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276228 BOLDT 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276348 BOLDT, F. T., UNIT 1 YORKTOWN (7100) KARNEI, HARLAN OIL & GAS CO. 086652 BOLLAND 1 BOLLAND RANCH, S. (PETTUS 4590) CORENERGY OPERATING GROUP, LLC 171222 BOLLAND RANCH 2 BOLLAND RANCH, S. (PETTUS 4590) TEPCO ENGINEERING 095248 BOLLAND, ERNEST 1 BOLLAND RANCH, S. (PETTUS 4590) TEPCO ENGINEERING 108050 BOLTING, GEORGIA FAYE ET AL 1 SPEARY, EAST (WILCOX 9800) MARWELL PETROLEUM LTD PARTNRSHIP 109550 BONILLA 1 MIKESKA (MASSIVE WILCOX) PROLINE ENERGY RESOURCES INC 177149 BONNER, R. R. 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089896 BONNER, R. R. 3 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 002101 BONNER, R. R. 6 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 057551 BONNER, R. R. 7 HEYSER (GRETA STRINGER) MCGOWAN WORKING PARTNERS, INC. 052083 BONNER, R. R. (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 091316 BONORDEN 1 PROVIDENT CITY (FRIO 3100) KWS OIL & GAS, LLC 211771 BONORDEN GAS UNIT 2 HALLETTSVILLE, E.(MIDDLE WILCOX) SULPHUR RIVER EXPLORATION, INC. 194175 BONORDEN GAS UNIT 3 L HALLETTSVILLE, E.(MIDDLE WILCOX) SULPHUR RIVER EXPLORATION, INC. 204254 BONORDEN GAS UNIT 3-U HALLETTSVILLE, E.(MIDDLE WILCOX) SULPHUR RIVER EXPLORATION, INC. 170621 BONORDEN GAS UNIT 4 HALLETTSVILLE, E.(MIDDLE WILCOX) SULPHUR RIVER EXPLORATION, INC. 224488 BONORDEN GAS UNIT 5 HALLETTSVILLE, E.(MIDDLE WILCOX) SULPHUR RIVER EXPLORATION, INC. 248812 BONORDEN GAS UNIT 6 HALLETTSVILLE, E.(MIDDLE WILCOX) SULPHUR RIVER EXPLORATION, INC. 231756 BONORDEN-CLARK GAS UNIT 1 PROVIDENT CITY (WILCOX 8,600) MARWELL PETROLEUM LTD PARTNRSHIP 003803 BOONE SWD 1 MONTEOLA (EDWARDS) REPSOL OIL & GAS USA, LLC 067270 BOOTHE 1 BRUSHY CREEK, S. (WILCOX 13900) BUFFCO PRODUCTION INC. 181299 BOOTHE GAS UNIT 1 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 224292 BOOTHE GAS UNIT NO 1 2 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 229964 BOOTHE UNIT 1 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 257633 BORCH-WALLIS-STEIN ULW A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289948 BORCHARDT STEINMANN USW B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289883 BORCHARDT STEINMANN USW C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289877 BORCHARDT STEINMANN USW D 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289879 BORCHERS 1 BORCHERS (5700 YEGUA) HYDROCARBON OPERATING, INC. 273424 BORCHERS 4 BORCHERS (1370) BLUE WING ENERGY, INC. 102632 BORCHERS 02 BORCHERS (5700 YEGUA) HYDROCARBON OPERATING, INC. 269114 BORCHERS 04 BORCHERS (4160) HYDROCARBON OPERATING, INC. 283569


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BORCHERS 15 BORCHERS (2850) VAQUERO OPERATING 143102 BORCHERS , WILLIAM 11 BORCHERS, SOUTH (1300) VAQUERO OPERATING 140967 BORCHERS "B" 3 MORALES, NORTH (1910) MAGNUM PRODUCING, LP 227768 BORCHERS A114 1 THE RAPTURE (DELTA) HUNT OIL COMPANY 232468 BORCHERS A19 1 THE RAPTURE (DELTA) HUNT OIL COMPANY 218851 BORCHERS ESTATE 1 BORCHERS, SOUTH (1300) BLUE WING ENERGY, INC. 078981 BORCHERS ESTATE 2 BORCHERS (2100) BLUE WING ENERGY, INC. 227972 BORCHERS ESTATE 2 BORCHERS (2200) BLUE WING ENERGY, INC. 131569 BORCHERS ESTATE 4B BORCHERS (2130) BLUE WING ENERGY, INC. 226811 BORCHERS ESTATE 13 BORCHERS (1370) BLUE WING ENERGY, INC. 105820 BORCHERS ESTATE 15 BORCHERS (2100) BLUE WING ENERGY, INC. 241168 BORCHERS ESTATE 16 BORCHERS (3070) BLUE WING ENERGY, INC. 144646 BORCHERS ESTATE 17 BORCHERS (3250) BLUE WING ENERGY, INC. 167856 BORCHERS, O. R. -A- 2 MORALES, NORTH (1250) BRINKERHOFF OIL COMPANY 096493 BORCHERS, VIVIAN 2 BENBOW (LOWER WILCOX A) HYDROCARBON OPERATING, INC. 132903 BORCHERS, VIVIAN 2 BENBOW (LOWER WILCOX B) RAMTEX ENERGY LLC 115899 BORCHERS, VIVIAN 4 BENBOW (LOWER WILCOX A) HYDROCARBON OPERATING, INC. 118196 BORCHERS, VIVIAN 5 BENBOW (LOWER WILCOX A) HYDROCARBON OPERATING, INC. 133395 BORCHERS, VIVIAN 10 ESPERANZA (3150) HYDROCARBON OPERATING, INC. 212772 BORCHERS, VIVIAN ET AL 6 BENBOW (LOWER WILCOX A) HYDROCARBON OPERATING, INC. 123397 BORCHERS, VIVIAN ET AL 8 BENBOW (LOWER WILCOX A) HYDROCARBON OPERATING, INC. 128596 BORCHERS, VIVIAN ETAL UNIT 2 7 BENBOW (LOWER WILCOX B) HYDROCARBON OPERATING, INC. 126099 BORCHERS, VIVIAN UNIT ET AL 1 BENBOW (LOWER WILCOX A) HYDROCARBON OPERATING, INC. 114619 BORCHERS, WILLIAM 1 BORCHERS (5700 YEGUA) PETRA OLEUM CORP. 223451 BORCHERS, WILLIAM 1 BORCHERS (8500) PETRA OLEUM CORP. 194117 BORCHERS, WILLIAM 1 BORCHERS, EAST (1250) VAQUERO OPERATING 129016 BORCHERS, WILLIAM 3 BORCHERS (3250) VAQUERO OPERATING 055983 BORCHERS, WILLIAM 4 BORCHERS, EAST (1250) VAQUERO OPERATING 092847 BORCHERS, WILLIAM 6 C BORCHERS (1900) VAQUERO OPERATING 061353 BORCHERS, WILLIAM 6 T BORCHERS (FRIO CATAHOULA) VAQUERO OPERATING 056006 BORCHERS, WILLIAM 14 BORCHERS (1500) VAQUERO OPERATING 135593 BORCHERS, WILLIAM 15 BORCHERS (2130) VAQUERO OPERATING 148640 BORCHERS, WILLIAM 15 BORCHERS, SOUTH (1900) VAQUERO OPERATING 231275 BORCHERS, WILLIAM 15 C BORCHERS (1500) VAQUERO OPERATING 070406 BORCHERS, WILLIAM 21 BORCHERS, SOUTH (1300) VAQUERO OPERATING 129027 BORCHERS, WILLIAM 29 BORCHERS (870) VAQUERO OPERATING 149545 BORCHERS, WILLIAM 29 BORCHERS, NORTH (650) VAQUERO OPERATING 232804 BORCHERS, WILLIAM 30 BORCHERS (3550) VAQUERO OPERATING 273881 BORCHERS, WILLIAM 30 BORCHERS (3950) VAQUERO OPERATING 130922 BORCHERS, WILLIAM 31 BORCHERS (3350) VAQUERO OPERATING 273879 BORCHERS, WILLIAM 31 BORCHERS (3600) VAQUERO OPERATING 227333 BORCHERS, WILLIAM 32 BORCHERS (2850) VAQUERO OPERATING 273878 BORCHERS, WILLIAM 32 BORCHERS (3950) VAQUERO OPERATING 231192 BORCHERS, WILLIAM -B- 3 BORCHERS (3800) BLUE WING ENERGY, INC. 254697 BORCHERS, WILLIAM -B- 5 BORCHERS (4160) VAQUERO OPERATING 256309 BORCHERS, WILLIAM A. 10 WILDCAT VAQUERO OPERATING 171208 BORCHERS, WILLIAM-A 10 BORCHERS (1370) VAQUERO OPERATING 177981 BORCHERS, WILLIAMS 13 BORCHERS (870) VAQUERO OPERATING 129012 BORCHERS, WM. 5 BORCHERS, NORTH (650) VAQUERO OPERATING 139533 BORDOVSKY UNIT 1 PANNA MARIA (CARRIZO) PROPERTY DEVELOPMENT GROUP, INC. 208024 BORROUM "B" 1 PLUMMER-WILCOX (8500) SUN EXPLORATION, INC. 105767


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BOSWELL 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268947 BOSWELL 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269573 BOWER 1 CHARCO, SE. (MASSIVE LOWER 8750) RAMTEX ENERGY LLC 262129 BOWERS, RUTH MCLEAN/FROST BANK 1 WILDCAT CORDELE DEVELOPMENT CORPORATION 174369 BOWMAN 1 MCCASKILL (LOWER WILCOX) ATASCA RESOURCES, INC. 199915 BOYCE, C.W. 3 BURNELL (2870) WELDER EXPLORATION & PROD., INC. 241969 BOYCE, W. W. 11 BOYCE (SLICK) ESTATE OF JAMES L. NELSON 195358 BOYCE, W. W. 14 BOYCE, SOUTH (PETTUS) ESTATE OF JAMES L. NELSON 092849 BOYD FAMILY TRUST 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 264351 BOYD FAMILY TRUST 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270126 BOYD FAMILY TRUST 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269407 BOYD FAMILY TRUST 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270127 BOYD, ALEX 1 SHERIFF (F-1) FORMATION RESOURCES LLC 134156 BOYD, ALEX 2 SHERIFF (F-3) FORMATION RESOURCES LLC 134157 BOYD, ALEX 3 L SHERIFF (F-2) FORMATION RESOURCES LLC 033747 BOYD, ALEX 3 U SHERIFF (F-1) FORMATION RESOURCES LLC 034229 BOYD, C. H. 5 SHERIFF (F-3) FORMATION RESOURCES LLC 033749 BOYD, CHARLIE H. 1 SHERIFF (F-4) FORMATION RESOURCES LLC 231505 BOYD, FRANK 1 SHERIFF (F-4) FORMATION RESOURCES LLC 183155 BOYD, FRANK 2 SHERIFF (CONSOLIDATED) FORMATION RESOURCES LLC 171260 BOYD, H. C. 1 SHERIFF (F-4) TRINIDAD RESOURCES, LLC 038893 BOYD, HENRY C. 3 SHERIFF (CONSOLIDATED) TRINIDAD RESOURCES, LLC 151661 BOYSEN A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265069 BOYSEN B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263776 BRADFORD 1 BTSA (YEGUA 4594) MAGNUM PRODUCING, LP 258014 BRADFORD 1 NORMANNA, E. (FRIO) MAGNUM PRODUCING, LP 286124 BRAMAN -A- 1 WILDCAT T-C OIL COMPANY, LLC 265197 BRAMAN -A- 2 BRAMAN (8300) T-C OIL COMPANY, LLC 286087 BRAMAN -D- 2 BRAMAN (8000) T-C OIL COMPANY, LLC 288971 BRANDL 1 PLACEDO, EAST (5960) STEWARDSHIP RESOURCES 281664 BRANDT, G. H. 1 BRANDT (YEGUA 4700) ADAMS, JOE D., TRUSTEE 084304 BRANDT, G. H. 3 BRANDT (YEGUA 4700) ADAMS, JOE D., TRUSTEE 072067 BRASHEAR ET AL 3 MINERAL, N. (800) EXPANDING EXPLORATION INC. 084040 BRASHEAR ET AL UNIT 1 MINERAL, NORTH (9750) NOG PRODUCTION & OPERATING LLC 124093 BRAZZEAL 1H EAGLEVILLE (EAGLE FORD-2) ROCKY CREEK RESOURCES, LLC 289157 BREEDEN 1-L WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 164554 BREEDEN 1-U WEESATCHE, NE. (WILCOX 10,030) RAMTEX ENERGY LLC 164552 BREEDEN, P. H. 1 BREEDEN (4600 YEGUA) SURE FLOW OIL & GAS, INC. 001015 BRICE UNIT 2 WORD, N. (7550) SULPHUR RIVER EXPLORATION, INC. 158427 BRINKOETER 1Q BURNELL (BRINKOETER) CHANDLER OIL & GAS, LLC 139304 BRINKOETER 10 BURNELL, SOUTH (1000) CHANDLER OIL & GAS, LLC 129956 BRINKOETER, H. C. 1 YOWARD, SW. (SLICK) ROCK RESOURCES, INC. 256869 BRINKOETER, W. H. Q 2 C BURNELL (SLICK) CHANDLER OIL & GAS, LLC 049051 BROOKING-SEALE UNIT 1 SWAN LAKE (6135) ACOCK/ANAQUA OPERATING CO., LP 191741 BROOKING, G. T. 45 SWAN LAKE (7100) ACOCK/ANAQUA OPERATING CO., LP 240758 BROOKING, GARLAND T. 2 BROOKING (8650) UNOSO OPERATING COMPANY L.L.C. 091214 BROOKING, M. T. #2 2 SOUTHERN COMFORT (FRIO) CORUM OPERATING COMPANY, LLC 269676 BROOKING, M.M. 1 SOUTHERN COMFORT (FRIO) CORUM PRODUCTION COMPANY 127084 BROOKING, M.M. 2 SOUTHERN COMFORT (FRIO) CORUM PRODUCTION COMPANY 135003 BROOKS TRUST 2 CADIZ (QUEEN CITY) DIRKS PETROLEUM COMPANY 251222 BROOKS TRUST NO.2 G.U.#2 2 CADIZ, NORTH (SLICK-WILCOX) DIRKS PETROLEUM COMPANY 181122


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BROUGHTON GAS UNIT O/A 1 YORKTOWN (WILCOX 9,900) PROLINE ENERGY RESOURCES INC 045514 BROWN 1 COLETTO CREEK, S. (3030) KLOTZMAN, M. S. EXPLORATION CO. 185948 BROWN 1 NORBEE S. (YEGUA 4800) HEADWATERS ENERGY PARTNERS, LLC 281616 BROWN 6 BEEVILLE, W. (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 263008 BROWN 12 NORBEE, S.E. (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 267866 BROWN 18 NORBEE (HOCKLEY 3700) HEADWATERS ENERGY PARTNERS, LLC 287930 BROWN C 15 NORBEE, S.E. (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 284400 BROWN GAS UNIT 1 NORBEE (SLICK) WAGNER OIL COMPANY 146734 BROWN GAS UNIT #1 1 L NORBEE (MACKHANK) HYDROCARBON HORIZONS, INC. 035447 BROWN GAS UNIT #1 1 U NORBEE (LULING, 1ST) WAGNER OIL COMPANY 035446 BROWN H 1 NORBEE, S.E. (4230) HEADWATERS ENERGY PARTNERS, LLC 281449 BROWN H 1A NORBEE (3400) HEADWATERS ENERGY PARTNERS, LLC 269248 BROWN H 3 BEEVILLE, W. (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 272968 BROWN UNIT 10 NORBEE (GEOLOGIC) HEADWATERS ENERGY PARTNERS, LLC 269243 BROWN, AUSTIN 6 HOLZMARK, E. (10,300) VISION OIL AND GAS LLC 228044 BROWN, ED 1 HOLZMARK, E. (10,300) VISION OIL AND GAS LLC 207642 BRUNS 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 260240 BRUNS 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268521 BRUNS 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268655 BRUNS 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268525 BRUNS 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 274457 BRUNS 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 274456 BRUNS 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271611 BRUNS 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 274455 BRUSHY CREEK 1 DRY HOLLOW (WILCOX MASSIVE EAST) PROLINE ENERGY RESOURCES INC 162212 BRUSHY CREEK GAS UNIT 9 BRUSHY CREEK, NORTH (FRIO 2750) KEY ENERGY SERVICES, LLC 172158 BRUSHY CREEK GAS UNIT 11 HOPE (VICKSBURG 3200) WANDOO ENERGY, LLC 183346 BRUSHY CREEK GAS UNIT 14 BRUSHY CREEK (FRIO 2900) WANDOO ENERGY, LLC 188629 BRUSHY CREEK GAS UNIT 15 HOPE (MIOCENE 2900) WANDOO ENERGY, LLC 190693 BRUSHY CREEK GAS UNIT 17 HOPE (MIOCENE 2700) WANDOO ENERGY, LLC 265946 BRUSHY CREEK GAS UNIT 18 BRUSHY CREEK (WILCOX -S-1-11200) WANDOO ENERGY, LLC 188920 BRUSHY CREEK GAS UNIT 21 BRUSHY CREEK (WILCOX -S-1-11200) WANDOO ENERGY, LLC 171215 BRUSHY CREEK GAS UNIT 22 HOPE (VICKSBURG 3200) WANDOO ENERGY, LLC 254219 BRYSCH 1 LIMES (WILCOX F-2) KEBO OIL & GAS, INC. 254913 BRYSCH 1 PANNA MARIA (EDWARDS) VALIDUS NRG AQUILAS ASSETCO LLC 258318 BRYSCH GAS UNIT 1H WARMSLEY, S. (10550) FAULCONER, VERNON E., INC. 255666 BRYSCH GAS UNIT 2 1 GEORGE WEST, WEST (10200) SANDEL OPERATING COMPANY 113782 BRYSCH GAS UNIT 2 2 FANT (WILCOX 10000) SANDEL OPERATING COMPANY 164061 BRYSCH GAS UNIT 2 3 L GEORGE WEST, WEST (10200) SANDEL OPERATING COMPANY 104467 BRYSCH GAS UNIT 2 3 U GEORGE WEST, WEST (9500) SANDEL OPERATING COMPANY 104096 BRYSCH, ALFRED 1 GEORGE WEST, WEST (8500) SANDEL OPERATING COMPANY 177942 BTK 1 CAMPBELL CREEK (9700) LAVACA CANYON PETROLEUM LLC 286946 BTK 2 CAMPBELL CREEK (9300) LAVACA CANYON PETROLEUM LLC 288493 BTK 2 CAMPBELL CREEK (9700) LAVACA CANYON PETROLEUM LLC 288692 BU ANDERSON-PRICHARD-TENBERG 2 CAUSEY (WILCOX 8700) FLETCHER OPERATING, LLC 245943 BU TOM SLICK 3 WILDCAT FLETCHER OPERATING, LLC 210451 BUCH GAS UNIT 1 WARMSLEY (VAUGHN) FLETCHER OPERATING, LLC 238238 BUCHHORN 1H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 272594 BUCHHORN 2H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 276115 BUCHHORN 3H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 274670 BUCHHORN 4H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 287670


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BUCHHORN 5H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 287671 BUCHHORN 6H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 287672 BUCHHORN B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264147 BUCHHORN GAS UNIT 1H WARMSLEY, S. (10550) FAULCONER, VERNON E., INC. 250898 BUCKERT 2 A-B-R, NE. (2150) L & L INVESTMENTS 078976 BUCKERT, T. A. 1 A-B-R, NE. (WILCOX 2ND, MASS.) L & L INVESTMENTS 074843 BUCKNER FOUNDATION 1 LIONS (CORONA CONSOLIDATED) FLINT INTERESTS, LLC 219921 BUEHRING UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289133 BUEHRING UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279601 BUEHRING UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279602 BUES, HENRY GAS UNIT 2 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 129736 BUES, HENRY GAS UNIT 14 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 222985 BUHLER 2 TELFERNER (4600) FIELD PETROLEUM CORP. 180964 BUHLER 33 PLACEDO (5720) ALLEGIANT RESOURCES, LLC 154573 BUHLER "A" 1 IDA WEITZ (3800) FIELD PETROLEUM CORP. 230789 BUHLER "B" 1 TELFERNER, NORTH (2050) FIELD PETROLEUM CORP. 242928 BUJNOCH 2 VIENNA (FRIO 3300) SOUNDLOGIC PROD. & EXPLOR., LLC 171752 BUJNOCH-HEIRS 1 WORD (WILCOX, LOWER) TRIO CONSULTING & MANAGEMENT,LLC 283929 BUJNOCH-HENDERSON 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 267873 BULL REDFISH UNIT 1 PANTHER REEF (FRIO G-1) LAMAR OIL & GAS, INC. 266900 BULL REDFISH UNIT 2 PANTHER REEF (FRIO CONS.) LAMAR OIL & GAS, INC. 274876 BULL REDFISH UNIT 3 PANTHER REEF (FRIO G-1) LAMAR OIL & GAS, INC. 279961 BUMBLE BEE 1H SUGARKANE (EAGLE FORD) ROSEWOOD RESOURCES, INC. 289149 BUNCH 2 BLANCONIA (2750) ANDERSON OIL LTD. 282264 BUNDICK 2 SARCO CREEK (2800) T-C OIL COMPANY, LLC 200172 BUNDICK 2 SARCO CREEK (4500) T-C OIL COMPANY, LLC 197477 BURDITT, ALLEN L. 5 LA WARD, NORTH (4700) ABACO OPERATING, LLC 184658 BURDITT, LOUISE 2 WILDCAT FORMATION RESOURCES LLC 151425 BURES 1 GANADO (FRIO 4-D) VIPER S.W.D., LLC 250099 BURES 1 MUSTANG CREEK, EAST (6150) VIPER S.W.D., LLC 164049 BURGESS UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266270 BURGESS UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277482 BURGESS UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277533 BURGESS UNIT A 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277534 BURNS GAS UNIT 2 CLAY WEST (WILCOX LOWER) WAGNER OIL COMPANY 158332 BURNS GAS UNIT NO 1 1 MORAY (EDWARDS) ENSIGN OPERATING LLC 236152 BURNS GAS UNIT NO 1 2 MORAY (EDWARDS) ENSIGN OPERATING LLC 235538 BURNS GAS UNIT NO 1 3 MORAY (EDWARDS) ENSIGN OPERATING LLC 237044 BURNS 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268180 BURNS, FINDLEY H. 1C WOOD HIGH (5300) DRIVER OIL & GAS, INC. 075706 BURNS, KITTY 1A TREY PET. I OMEGA ENERGY, LLC 119777 BURRIS 54 1 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 262993 BURROWS GAS UNIT 1 OCONNOR RANCH (FRIO CONS.) AMERICO ENERGY RESOURCES, LLC 195992 BURTON, BILLY JOE 1 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 076580 BUTLER A-304 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 259222 BUTLER A-304-BRYSCH USW 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 287204 BUTLER A-304-BRYSCH USW A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 287175 BUTLER A-304-BRYSCH USW B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 287203 BUTLER A-304-BRYSCH USW C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 286583 BUTLER A-304-BRYSCH USW D 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 286582 BUTLER A-304-BRYSCH USW E 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 287144


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BUTLER D - GOHLKE A USW 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 288754 BUTLER D - GOHLKE A USW A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288429 BUTLER D - GOHLKE A USW B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288430 BUTLER D - GOHLKE A USW C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288431 BUTLER UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 263744 BUTLER UNIT B 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 277555 BUTLER UNIT C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268773 BUTLER UNIT D 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 265330 BUTLER UNIT D 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 278361 BUZZARD VISTA A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266688 BUZZARD VISTA A D 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277554 BUZZARD VISTA A D 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283405 BUZZARD VISTA A D 7H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283524 BYERLY A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266811 BYERLY A - CASKEY B SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288289 BYERLY A - POKLUDA A SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285732 BYERLY A - POKLUDA A SA 2 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285846 BYERLY A - POKLUDA A SA 3 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285733 BYERLY A - POKLUDA A SA 4 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285734 BYERLY A - POKLUDA A SA 5 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285735 BYLES, J. C. "A" ET AL 1 CAESAR, SOUTH (MASSIVE) STONE TRUCKING COMPANY, INC. 180993 C.E. HEARD "B" 20 HEARD RANCH (FRIO Z) SUE-ANN OPERATING, L.C. 230418 C.E. HEARD "B" 28 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 230335 C.E. HEARD "B" 34 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 230518 CALLAGHAN 1 WILDCAT WELDER EXPLORATION & PROD., INC. 219742 CALLAWAY 2 MORALES (2280) TIDEWATER MINERALS CORPORATION 225631 CALLAWAY #2 1 MORALES (2710) CHAPARRAL ENERGY, L.L.C. 179374 CAMERON 1 CAMERON-ALLEN (FRIO 4000) WALLIS ENERGY, INC. 125765 CAMPBELL 2 MORALES (2540) TIDEWATER MINERALS CORPORATION 238942 CANERDAY 1 EL TORO (6300) SHANLEY OIL COMPANY 099406 CARL 1 YOUGEEN, SOUTH (3550) PROLINE ENERGY RESOURCES INC 067143 CARLYON GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 258598 CARMICHAEL 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 201843 CARMICHAEL 1 MARSHALL, EAST (WILCOX 9410) REMORA OPERATING, LLC 106939 CARMICHAEL 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 207929 CARMICHAEL 2 MARSHALL, EAST (YEGUA 5523) REMORA OPERATING, LLC 126215 CARMICHAEL 3 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 207936 CARMICHAEL 4 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 214433 CARMICHAEL 5 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 215767 CARMICHAEL 6 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 216717 CARMICHAEL A 1 WILDCAT REMORA OPERATING, LLC 228644 CARMICHAEL A 2 MARSHALL, EAST (YEGUA 5300) REMORA OPERATING, LLC 134979 CAROTHERS 1 COLOGNE (4300) AMPAK OIL COMPANY 180844 CARPENTER 1 NURSERY (YEGUA 5700) CML EXPLORATION, LLC 234357 CARPENTER 1 THEIS, SOUTH(SLICK FIRST) CXL ENERGY LLC 210769 CARPENTER 2 THEIS, SOUTH(SLICK FIRST) CXL ENERGY LLC 218491 CARPENTER 3 BEEVILLE, NORTH (YEGUA 4900) HEADWATERS ENERGY PARTNERS, LLC 283598 CARPENTER 4 HEALEY (YEGUA 4824) HEADWATERS ENERGY PARTNERS, LLC 270936 CARPENTER, J. R. 1 SINGLETON (3950) CHESNUTT OIL & GAS, INC. 092153 CARROLL 1 BALFOUR (YEGUA 4800) B D PRODUCTION CO., INC. 233396 CARROLL RETZLOFF 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267639


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CARROLL RETZLOFF 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268800 CARROLL-MCMANUS 4 BRUSHY CREEK (WILCOX -S-1-11200) BUFFCO PRODUCTION INC. 176015 CARROLL-MCMANUS 2 2 BRUSHY CREEK (WILCOX -S-1-11200) BUFFCO PRODUCTION INC. 170197 CARROLL-MCMANUS 3 3 BRUSHY CREEK (WILCOX -S-1-11200) BUFFCO PRODUCTION INC. 172676 CARTER, A. J. III 1 THOMASTON (YEGUA 5200) CAMOIL, INC. 117081 CARTER, WILL T. 2 WARMSLEY, S. (10550) FLETCHER OPERATING, LLC 242492 CARTWRIGHT RANCH 1 LAGARTO CREEK (YEGUA) ROYAL PRODUCTION COMPANY, INC. 258153 CARTWRIGHT RANCH 3 MOUNT LUCAS (COOK MTN. 5700) ROYAL PRODUCTION COMPANY, INC. 260575 CARTWRIGHT RANCH 9 MOUNT LUCAS (COOK MTN. 5700) ROYAL PRODUCTION COMPANY, INC. 274358 CARTWRIGHT RANCH 10 MOUNT LUCAS (2500) ROYAL PRODUCTION COMPANY, INC. 290364 CARTWRIGHT RANCH 14 MOUNT LUCAS (COOK MTN. 5800) ROYAL PRODUCTION COMPANY, INC. 286955 CARTWRIGHT RANCH 15 MOUNT LUCAS (COOK MTN. 5800) ROYAL PRODUCTION COMPANY, INC. 287919 CARTWRIGHT RANCH 16 C MOUNT LUCAS (COOK MTN. 5700) ROYAL PRODUCTION COMPANY, INC. 288759 CARTWRIGHT RANCH 16 T MOUNT LUCAS (COOK MTN. 5800) ROYAL PRODUCTION COMPANY, INC. 288776 CARTWRIGHT RANCH 17 MOUNT LUCAS (COOK MTN. 5800) ROYAL PRODUCTION COMPANY, INC. 290256 CARTWRIGHT RANCH 18 MOUNT LUCAS (COOK MTN. 5800) ROYAL PRODUCTION COMPANY, INC. 290639 CARTWRIGHT, HOLMAN 4 MOUNT LUCAS (2100) ROYAL PRODUCTION COMPANY, INC. 003215 CASA UNIT 1D COQUAT (LULING) PROLINE ENERGY RESOURCES INC 248545 CASCADIA #2 1 PERDIDO CREEK (YEGUA) MERCY OIL AND GAS, LP 184329 CASKEY A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264533 CASKEY A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287889 CASKEY A -CASKEY B SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288544 CASKEY B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265196 CASKEY B 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287929 CASKEY B - MIGURA B SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288492 CASKEY B - MIGURA B SA 2 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287890 CASKEY B - MIGURA B SA 3 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288262 CASKIDS-TEXSTAR-MCDOWELL 1 KENEDY, SW. (SLIGO) PROEX ENERGY MANAGEMENT, L.L.C. 152476 CAT-KENEDY SWD 1 SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264998 CBCB&G UNIT 1 RAY-WILCOX (WALTON MASSIVE) BRITANCO, L.L.C. 121518 CEF-CRISP A AC SA 1 1H SUGARKANE (AUSTIN CHALK) BPX OPERATING COMPANY 289678 CEI UNIT 4H ERNIE BAKER (PECAN GAP) EOG RESOURCES, INC. 269147 CHANDLER 1 SPEARY (HACKNEY 8600) REPSOL OIL & GAS USA, LLC 242490 CHANDLER GAS UNIT 1H WARMSLEY, S. (10550) FAULCONER, VERNON E., INC. 250013 CHANDLER UNIT 2 YOAKUM (WILCOX 8,200) UNIT PETROLEUM COMPANY 093072 CHANDLER UNIT 3 YOAKUM (WILCOX 7300) UNIT PETROLEUM COMPANY 285865 CHAPMAN BROTHERS 1 POEHLER (COOK MT.) NELSON, JAMES L. 257145 CHAPMAN BROTHERS 1 POEHLER (YEGUA 4700) ESTATE OF JAMES L. NELSON 214134 CHAPMAN, M. (SUN) 1 POEHLER (MASSIVE 8250) ESTATE OF JAMES L. NELSON 140424 CHAPMAN, M.M. ET UX 1 POEHLER (YEGUA -B-) ESTATE OF JAMES L. NELSON 155084 CHARLES 1 SARTWELLE, WEST (YEGUA 5600) DEWBRE PETROLEUM CORPORATION 186977 CHARLES 2 LAVACA RIVER (YEGUA) DEWBRE PETROLEUM CORPORATION 188178 CHARLES KUESTER A-207 A 2 HELEN GOHLKE ( YEGUA K) B.P. PRODUCTIONS INC. 203365 CHARLES NICHOLS GAS UNIT 1 ISAACKS (EDWARDS) ENSIGN OPERATING LLC 220988 CHARLES RIEDESEL GU 1 1 DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 256547 CHARLES RIEDESEL GU 1 2 DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272165 CHARLES RIEDESEL GU 1 3 DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271815 CHARLES W. SCHILHAB, ET AL 2 C SPEAKS, SW. (FRIO 2800) TREK RESOURCES, INC. 285347 CHARLES W. SCHILHAB, ET AL 2 T SECLUSION (COCKFIELD 6100) TREK RESOURCES, INC. 285303 CHARLEY JACOBS GAS UNIT 2 HELEN GOHLKE, E. (11060) FAULCONER, VERNON E., INC. 184593 CHAROLAIS 1 BRUSHY CREEK, N. (YEGUA 4800) PREMIER MINERALS, INC. 214397


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CHESNUTT GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 260239 CHESNUTT 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 256597 CHESNUTT 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 258430 CHICOLETE CREEK 1 BORCHERS, EAST (1250) MAGNUM PRODUCING, LP 250887 CHILDREN'S WESTON UNIT 1HR SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273128 CHILDREN'S WESTON UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273486 CHILDREN'S WESTON UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 272730 CHILDREN'S-WESTON UNIT 15H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282421 CHILDREN'S-WESTON UNIT 503H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282384 CHILDREN'S-WESTON UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279743 CHILDREN'S-WESTON UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 273438 CHILDREN'S-WESTON UNIT AC 10H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280206 CHILDREN'S-WESTON UNIT AC 12H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280205 CHOATE 1 GOEBEL (9600) REMORA OPERATING, LLC 240597 CHOATE 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266115 CHOATE 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270922 CHOATE 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269398 CHOATE 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273096 CHOATE 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271597 CHOATE 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278302 CHOATE 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278303 CHOATE 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278304 CHOATE 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278305 CHOATE 01 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278306 CHOATE 01 11H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278308 CHOATE 01 12H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278464 CHOATE 01 13H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278309 CHOATE 01 14H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278592 CHUMCHAL UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 271347 CHUMCHAL UNIT 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276301 CHUMCHAL UNIT 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 275079 CHUMCHAL UNIT 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 275764 CHUMCHAL UNIT 6L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288866 CHUMCHAL UNIT 7L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288867 CIACCIO A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266746 CITY OF INEZ NO. 1 GAS UNIT 1B INEZ (FRIO 5200) GEONATURAL RESOURCES, INC. 188907 CLARK 1 SPEAKS, SW. (3980) O'TOOL OIL & GAS, LLC 284662 CLARK GAS UNIT 1 WARMSLEY (KORTH) FLETCHER OPERATING, LLC 215517 CLARK GAS UNIT II 1 CHRISTMAS, DEEP (WILCOX 10800) FLETCHER OPERATING, LLC 223305 CLARK GAS UNIT II 1 CHRISTMAS, SOUTH (GANSON) FLETCHER OPERATING, LLC 288291 CLARK, GARY 1 CLARK (MAGNOLIA) PIE OPERATING, LLC 198517 CLARK, TOM 1 HYSAW (EDWARDS) INPEX EAGLE FORD, LLC 002258 CLARKSON 1 TEJAS (FRIO 4450) CHARRO OPERATING, L.L.C. 290459 CLARKSON 1 TEJAS (FRIO 4800) CHARRO OPERATING, L.L.C. 287654 CLAUDE BLACKWELL GAS UNIT 1 MORAY (EDWARDS) ENSIGN OPERATING LLC 239425 CLAUDE BLACKWELL GAS UNIT NO 1 2 MORAY (EDWARDS) ENSIGN OPERATING LLC 253398 CLAUDE BLACKWELL GAS UNIT NO 1 3 MORAY (EDWARDS) ENSIGN OPERATING LLC 245440 CLAUDE E. HEARD ET AL 2G GRETA (O-1-B) HILCORP ENERGY COMPANY 257876 CLAUDE E. HEARD ET AL 19 GRETA (O-1-B) HILCORP ENERGY COMPANY 250234 CLAUDE E. HEARD ET AL 34 GRETA (L-13) HILCORP ENERGY COMPANY 263226 CLAUDE E. HEARD ET AL 42 GRETA (O-1) HILCORP ENERGY COMPANY 269828


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CLAY CLARK 2 WORD, N. (7200) SULPHUR RIVER EXPLORATION, INC. 283178 CLAY PASTURE -A- 2 MCFADDIN (2000) T-C OIL COMPANY, LLC 241918 CLAY PASTURE -A- 5 MCFADDIN (2000) T-C OIL COMPANY, LLC 236296 CLAY PASTURE -A- 6 ANAQUA (2650) T-C OIL COMPANY, LLC 233743 CLAY PASTURE -B- STATE UNIT 1 ANAQUA (1700) T-C OIL COMPANY, LLC 234356 CLAY PASTURE -B- STATE UNIT 1 ANAQUA (1900) T-C OIL COMPANY, LLC 250866 CLAY PASTURE -B- STATE UNIT 1 ANAQUA (2960) T-C OIL COMPANY, LLC 274504 CLAY PASTURE -B- STATE UNIT 12 ANAQUA (3275) T-C OIL COMPANY, LLC 244869 CLAY PASTURE -B- STATE UNIT 13LT ANAQUA (1900) T-C OIL COMPANY, LLC 242933 CLAY PASTURE -B- STATE UNIT 13UT ANAQUA (1700) T-C OIL COMPANY, LLC 242931 CLAY WEST A 2 CLAY WEST S. (QUEEN CITY) KEBO OIL & GAS, INC. 187006 CLAY, NONA 1 CAESAR, SOUTH (WILCOX 9770) FLETCHER OPERATING, LLC 198742 CLAY, NONA 1 CAUSEY (11,100) VISION OIL AND GAS LLC 204115 CLAYTON BLOCK 86 UNIT 4 CLAYTON (BLOCK 72 SD.) HEDRICK PRODUCTION INC. 263367 CLAYTON NORTH UNIT 1 SIMMONS CITY (GOVT. WELLS) REPUBLIC RESOURCES, LLC. 253086 CLAYTON NORTH UNIT 2 WILDCAT REPUBLIC RESOURCES, LLC. 254205 CLEMENT HEARD 1 GRETA (L-12) HILCORP ENERGY COMPANY 257067 CLEMENT HEARD 5 GRETA (L- 3) HILCORP ENERGY COMPANY 290991 CLEMENT HEARD 13 GRETA (L-15) HILCORP ENERGY COMPANY 259996 CLEMENT HEARD 30 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 247337 CLEMENT HEARD 35 TOM O'CONNOR (5410) HILCORP ENERGY COMPANY 260691 CLEMENT, G. S. 5 D TEXANA (5350) PEGASUS OPERATING, INC. 053107 CLEMENT, G. S. 5 H TEXANA (6300) COOK, LEO D. 053663 CLEMENT, GEO. 5 F TEXANA (6400) COOK, LEO D. 036916 CLEMENTS, G. S. 9 TEXANA (5500, LOWER) PEGASUS OPERATING, INC. 148054 CLEMENTS, GEORGE S 7 TEXANA (6320) PEGASUS OPERATING, INC. 230681 CLEMENTS, GEORGE S. 5 H TEXANA (6500 FRIO) COOK, LEO D. 036014 CLIFF FROMME 1 DALLAS HUSKY, NE. (MASSIVE WX) WELDER EXPLORATION & PROD., INC. 236080 CLIFF FROMME 2 DALLAS HUSKY, NE. (MASSIVE WX) WELDER EXPLORATION & PROD., INC. 244430 CLIFFORD F. SPIES GAS UNIT 1 4 YORKTOWN, S (WILCOX 11100) MAGNUM PRODUCING, LP 174916 CLINTON 1 GOLIAD, WEST (1 ST MASSIVE) VAQUERO OPERATING 209665 CLINTON 1 GOLIAD, WEST (2ND MASSIVE) VAQUERO OPERATING 198392 CLINTON 1 OLD BUZZARD (WILCOX) VAQUERO OPERATING 169417 COASTAL BEND CADDIS 1 BRUSHY CREEK (WILCOX -S-1-11200) ARRINGTON OIL&GAS OPERATING LLC 280171 COCKE AND GOODRICH UNIT 1 HELEN GOHLKE, SW. (WILCOX CONS.) SUE-ANN OPERATING, L.C. 134136 COFFIN-SARGENT UNIT 1 MT. LUCAS (HOCKLEY, UP.) WELDER EXPLORATION & PROD., INC. 284422 COHN 1 MUY BUENO (9800) LIGHTNING OIL COMPANY 230357 COHN 9 BIG OAK (FRIO 2000) LIGHTNING OIL COMPANY 200621 COLE, EMMETT 1 KELLERS CREEK, S. (7312) PONTIAC OIL, INC. 127031 COLETO CATTLE, LTD, ET AL 1 CHARCO, SE.(WILCOX, MIDDLE 9700) JONES, L. E. OPERATING, INC. 190566 COLETO POINT 1 MISSION VALLEY, W. (WILCOX G) WHITE OAK OPERATING COMPANY LLC 176813 COLETO POINT 2 MISSION VALLEY, W. (WILCOX G) WHITE OAK OPERATING COMPANY LLC 207640 COLETO POINT 3 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 274860 COLLE UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276648 COLLIER 14 BEEVILLE, NORTH (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 257064 COLLIER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268181 COLLINS-MCDOWELL 2 KENEDY, CENTRAL (EDWARDS) MOMENTUM ENERGY CORPORATION 192305 COLLINS, CHRISTINE ET VIR 1 RIC-JOHN (FRIO 2900) CLARON CORPORATION 124173 COLLINS, MICHAEL 1 COTTONWOOD CREEK, S. (FRIO 3050) CASKIDS OPERATING COMPANY 231805 COLMAN 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 270909 COLVIN UNIT A 1 WILDCAT BURLINGTON RESOURCES O & G CO LP 266293


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ COLVIN UNIT A 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 266294 COLVIN UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266263 COLVIN UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 278936 COLVIN UNIT A 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 279438 COLVIN UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266285 COLVIN UNIT B 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277739 COLVIN UNIT B 8 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 281092 COLVIN UNIT B 11 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 281521 COMANCHE 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288396 CONNIFF UNIT A 1H EAGLEVILLE (EAGLE FORD-2) ZAZA ENERGY, LLC 267301 COOK 2-C GOWITT (YEGUA 4575) ESTATE OF JAMES L. NELSON 174406 COOK 2-T GOWITT (COOK MOUNTAIN) NELSON, JAMES L. 175413 COOK - FENNER UNIT 1 SNEEZY (YEGUA) RELENTLESS PERMIAN OPERATING LLC 265328 COOK GAS UNIT NO 1 1 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 259558 COOK, J.G 9 HEYSER (5400 #2) BAYLOR OPERATING, LLC 128123 COOK, J.G. 1 HEYSER (3900) BAYLOR OPERATING, LLC 130162 COOLEY M. E. 3 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 174766 COOLEY, M. E. 1 MISSION VALLEY, WEST (MASSIVE-1) WHITE OAK OPERATING COMPANY LLC 194567 COOLEY, M. E. 1 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 171763 COOLEY, M. E. 2 MISSION VALLEY, W (WILCOX 10800) WHITE OAK OPERATING COMPANY LLC 239250 COOLEY, M. E. 5 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 177148 COOLEY, M. E. 7 MISSION VALLEY, W. (MASS WILCOX) WHITE OAK OPERATING COMPANY LLC 178472 COOLEY, M. E. 10 MISSION VALLEY, W.(WILCOX 10600) ENDEAVOR NATURAL GAS, LP 202636 COOLEY, M. E. 13 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 198951 COOLEY, M. E. 14 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 198956 COOLEY, M. E. 15 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 203616 COOLEY, M.E. 6 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 180502 COOLEY, M.E. 11 MISSION VALLEY (8300) WHITE OAK OPERATING COMPANY LLC 218789 COOLEY, M.E. 12 MISSION VALLEY (WILCOX 9000) WHITE OAK OPERATING COMPANY LLC 216505 COPANO GAS UNIT 38 TOM OCONNOR (4200) T-C OIL COMPANY, LLC 258672 CORGEY 1 MCCASKILL (LOWER WILCOX) OMEGA ENERGY, LLC 207247 COSTLOW GAS UNIT NO. 1 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268205 COUTRET, A. JR. 1 U ALBRECHT (YEGUA) WISEMAN, WILLIAM M. 000537 COX 3 PAISANO CREEK (PETTUS) SALT CREEK PRODUCTION, INC. 171598 COX BAY STATE TRACT NO. 59 1 MAUDE B. TRAYLOR (F-41-61, DEEP) REMORA OPERATING, LLC 128647 COY CITY GAS UNIT O/A 401 COY CITY (7800 -D-) LOVACA GATHERING COMPANY 001444 COY CITY SWD 1 COY CITY (7100) PILOT WATER SOLUTIONS SWD LLC 277720 CRAFT 1 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 280521 CRANDALL, RUBIE 2 CRANDALL RUBIE (WILCOX CONS.) XTO ENERGY INC. 269032 CRANDALL, RUBIE 3 CRANDALL RUBIE (MAGNOLIA) XTO ENERGY INC. 192831 CRANDALL, RUBIE 3 CRANDALL RUBIE (WILCOX CONS.) XTO ENERGY INC. 206762 CRANDALL, RUBIE 4 WILDCAT XTO ENERGY INC. 209265 CRANDALL, RUBIE 4 CRANDALL RUBIE (L. SIBLEY SAND) XTO ENERGY INC. 202798 CRANDALL, RUBY 1 CRANDALL RUBIE (MAGNOLIA) XTO ENERGY INC. 184431 CRANZ 14 SPEAKS, SW. (WILCOX 11960) HYDROCARBON OPERATING, INC. 118126 CRAVENS, E.T. 8 GANADO, WEST (5200) ALLEGIANT RESOURCES, LLC 155877 CRAVENS, LLC FEE 1A CIRCLE -A- (2600) CRAVENS ENERGY MGMT, LLC 001154 CRAVENS, LLC FEE 3 CIRCLE -A- (2600) CRAVENS ENERGY MGMT, LLC 098059 CREWS GAS UNIT 1 AUSTIN, W. (10600) SCORPION OIL & GAS, LLC 178236 CREWS GAS UNIT 2 WILDCAT SCORPION OIL & GAS, LLC 189444 CREWS GAS UNIT 3 GOLIAD, WEST (2ND MASSIVE) SCORPION OIL & GAS, LLC 241861


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CREWS GAS UNIT 4 GOLIAD, WEST (MACHANK) SCORPION OIL & GAS, LLC 243872 CREWS UNIT 1H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266739 CREWS UNIT 2H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266779 CREWS UNIT 3H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266708 CREWS UNIT 4H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 270874 CREWS UNIT 5H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287651 CREWS UNIT 6H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287652 CREWS UNIT 7H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287653 CREWS UNIT 8H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287655 CREWS UNIT 9H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287656 CREWS UNIT 10H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287657 CRISP B AC-CREWS A AC SA 3 3H SUGARKANE (AUSTIN CHALK) BPX OPERATING COMPANY 289640 CRISP B-CREWS A SA 2 2H EAGLEVILLE (EAGLE FORD-2) BPX OPERATING COMPANY 289680 CROCKER, P. P. G.U. #1 1 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 100766 CROCKER, P. P. G.U. #1 2 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 102246 CROCKER, PATRICIA PERKINS 2 SOL WEST (SECOND MACKHANK) ENCINO EXPLORATION, INC. 093602 CROCKER, PATRICIA PERKINS A 1 BRASLAU, E. (2ND MASSIVE) ENCINO EXPLORATION, INC. 095634 CROCKER, PATRICIA PERKINS A 2 BRASLAU, E. (2ND MASSIVE) ENCINO EXPLORATION, INC. 091837 CROSSROADS UNIT 2H EAGLEVILLE (EAGLE FORD-2) EOG RESOURCES, INC. 290483 CROSSROADS UNIT 3H EAGLEVILLE (EAGLE FORD-2) EOG RESOURCES, INC. 290485 CROSSROADS UNIT 4H EAGLEVILLE (EAGLE FORD-2) EOG RESOURCES, INC. 290388 CROSSROADS UNIT 5H EAGLEVILLE (EAGLE FORD-2) EOG RESOURCES, INC. 290389 CROSSROADS UNIT 6H EAGLEVILLE (EAGLE FORD-2) EOG RESOURCES, INC. 290390 CROSSROADS UNIT 7H EAGLEVILLE (EAGLE FORD-2) EOG RESOURCES, INC. 290393 CROSSROADS UNIT 8H EAGLEVILLE (EAGLE FORD-2) EOG RESOURCES, INC. 290394 CROSSROADS UNIT 9H EAGLEVILLE (EAGLE FORD-2) EOG RESOURCES, INC. 290400 CROW A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 261062 CROW A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266110 CROW A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266822 CROW A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289345 CROW A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289364 CROW A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289348 CROW A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289365 CROW A 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289349 CROW A 9H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289367 CROW A 10H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289196 CROW A 11H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289193 CROW A 12H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289194 CROW A 13H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289195 CROW A 14H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289197 CROW A 15H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289209 CROW A 16H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289210 CROW A 17H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289211 CROW A 18H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289344 CROW A 19H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289225 CROW A 20H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289233 CROW A AC 2H SUGARKANE (AUSTIN CHALK) DEVON ENERGY PRODUCTION CO, L.P. 289235 CROWN 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 167057 CUERO SWD 1 DE WITT (EAGLE FORD SHALE) EVX MIDSTREAM PARTNERS II LLC 272909 CUERO SWD 1 MORAY (EDWARDS) EVX MIDSTREAM PARTNERS II LLC 265940 CULBERSON-PATTESON UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289303


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CULLEN TRUST 1 SARTWELLE, W. (WILCOX 2) REPUBLIC RESOURCES, LLC. 264269 CULLI-MCKAY 1 SINGLETON (PETTUS) HEADWATERS ENERGY PARTNERS, LLC 286049 CUNNINGHAM 1 A-B-R (MACKHANK 8500) NOG PRODUCTION & OPERATING LLC 286542 CUNNINGHAM 1 MARSHALL (MIDDLE WILCOX) NOG PRODUCTION & OPERATING LLC 197435 CURRER, G. W. GAS UNIT 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 064111 CURTIS FOESTER 2 MAGNOLIA BEACH (8700) ATLAS OPERATING LLC 250710 CUSACK GAS UNIT 1 1 MORAY (EDWARDS) ENSIGN OPERATING LLC 263820 CUTBIRTH 1 POWDER RIVER (CONSOLIDATED) CXL ENERGY LLC 226043 CUTBIRTH 2 POWDER RIVER (CONSOLIDATED) CXL ENERGY LLC 238216 CUTBIRTH UNIT 1 WILDCAT COASTAL EXPL. & DEV. CORP. 186445 D BAKER UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264000 D BAKER UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266296 D BAKER UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 274458 D BAKER UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 274459 D BAKER UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 275694 D BAKER UNIT A 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282714 D BAKER UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266283 D. BOOTHE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268546 D. LAMBERT 1 KOENIG, NORTH (WILCOX MIGURA) TEXRON OPERATING, LLC 249472 D. MORTON 1 SECLUSION (COCKFIELD 6100) TREK RESOURCES, INC. 281828 D. WARZECHA A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 268555 D. WARZECHA A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282074 D. WARZECHA A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282075 D. WARZECHA A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282282 D. WARZECHA A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282082 D. WARZECHA A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282081 DAGG RANCH 1 DRY HOLLOW (UPPER ROCHELLE) MERIT ENERGY COMPANY 198350 DAGG RANCH 1 DRY HOLLOW (WILCOX MASSIVE) MERIT ENERGY COMPANY 198347 DANA 1 H. THOMAS (CATAHOULA 2800) VAQUERO OPERATING 252941 DANFORTH 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 188952 DANFORTH-DYE 3 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 212169 DANFORTH-DYE 4 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 215296 DARWIN DUDERSTADT 1 BRANDT (2750) UNIT PETROLEUM COMPANY 283695 DAVENPORT UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289124 DAVID SAENZ 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268533 DAVILA UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268657 DAVILA UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266118 DAVILA UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281711 DAVILA UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281713 DAVILA UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281714 DAVILA UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281715 DAVILA UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281716 DAVILA UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285062 DAVILA UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285060 DAVILA UNIT 13H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283206 DAVILA UNIT 14H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283247 DAVILA UNIT 22H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283554 DAVILA UNIT 23H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283248 DAVILA UNIT 501H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281717 DAVILA UNIT 503H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281718 DAVILA UNIT 505H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281719


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DAVILA UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 282001 DAVILA UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 281870 DAVILA UNIT AC 6H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 284824 DAVILA UNIT AC 8H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 283517 DAVILA UNIT AC 25H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 281871 DAVILA-GRAHAM UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270119 DAVILA-GRAHAM UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270323 DAVILA-GRAHAM UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282379 DAVILA-GRAHAM UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288015 DAVILA-GRAHAM UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288025 DAVILA-GRAHAM UNIT 503H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282380 DAVILA-GRAHAM UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 282401 DAVILA-GRAHAM UNIT AC 6H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 282382 DAVILA-GRAHAM-KOWALIK SA 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290378 DAVILA-MOBIL A-KENNEDY UNIT SA 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290372 DAVILA-WESTON HENKE UNIT SA A 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290479 DAVILA-WESTON HENKE UNIT SA B 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290471 DAVILA-WESTON HENKE UNIT SA C 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290444 DAVIS 1 WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 164234 DAVIS 2 WEESATCHE, NE. (WILCOX 10,030) RAMTEX ENERGY LLC 168353 DAVIS 3 WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 169888 DAVIS UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260301 DAVIS 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267246 DAVIS 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267655 DAVIS 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280503 DAVIS 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278847 DAVIS 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 279018 DAVIS 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280366 DAVIS 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280155 DAVIS 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289503 DAVIS 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289505 DAVIS 01 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289506 DAVIS 01 11H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 288673 DAVIS, N. B. 7 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 176337 DAVIS, NONA B. 48 YOUGEEN (STILLWELL 4100) WELDER EXPLORATION & PROD., INC. 004842 DAVIS, NONA BERRY YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 259864 DAVIS, NONA BERRY 11 YOUGEEN WELDER EXPLORATION & PROD., INC. 252946 DAVIS, NONA BERRY 20 YOUGEEN WELDER EXPLORATION & PROD., INC. 252954 DAVIS, NONA BERRY 28 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 225640 DAVIS, NONA BERRY 42 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 258433 DAVIS, NONA BERRY 45 YOUGEEN WELDER EXPLORATION & PROD., INC. 253255 DAVIS, NONA BERRY 47 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 226047 DAVIS, NONA BERRY 58 YOUGEEN (STILLWELL 4100) WELDER EXPLORATION & PROD., INC. 234230 DAVIS, NONA BERRY 59 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 231283 DAVIS, NONA BERRY 61 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 240560 DAVIS, NONA BERRY 62 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 233288 DAVIS, NONA BERRY 64 YOUGEEN WELDER EXPLORATION & PROD., INC. 247677 DAVIS, NONA BERRY 65 YOUGEEN (STILLWELL 4100) WELDER EXPLORATION & PROD., INC. 259272 DAVIS, NONA BERRY 65 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 262208 DAVIS, NONA BERRY 67 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 262151 DAVIS, NONA BERRY 69 YOUGEEN (PETERS, MIDDLE) WELDER EXPLORATION & PROD., INC. 269207


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DAVIS, NONA BERRY 71 YOUGEEN WELDER EXPLORATION & PROD., INC. 269976 DAVIS, NONA BERRY 72 YOUGEEN (PETERS, MIDDLE) WELDER EXPLORATION & PROD., INC. 269206 DAVIS, NONA BERRY 73 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 272579 DE LA GARZA GAS UNIT 1 L MARSHALL (MIDDLE WILCOX) RINCON PETROLEUM CORPORATION 226885 DE LA GARZA GAS UNIT 1 U GLADYS POWELL (8000) RINCON PETROLEUM CORPORATION 225275 DEAN 6 TELFERNER, EAST (5150 FRIO) ACOCK/ANAQUA OPERATING CO., LP 288119 DEAVERS, D. F. -A- 1 VICTORIA (4000) R & S SERVICES 034390 DEBILL 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266221 DEBILL 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268939 DEBILL 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271602 DEBILL 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271129 DEBILL 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271131 DEBILL 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271598 DEBILL 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271407 DEBILL 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271836 DEBILL 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271854 DEBILL 01 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277166 DEBILL 01 11H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277218 DEBILL 01 12H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278037 DEBILL 01 13H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276622 DEBILL 01 14H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276625 DEBILL 01 15H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280518 DEBILL 01 16H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280439 DEBILL 01 17H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280440 DEBILL 01 18H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280451 DEBILL 01 19H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280383 DEBILL 01 20H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280444 DEBILL 01 21H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280438 DEBORD GAS UNIT 1 KINKLER (5700) FINALY RESOURCES LLC 256120 DEEDRA-LORI (SA) UNIT 3 3H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287039 DEEDRA-LORI (SA) UNIT 4 4H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287666 DEGOLYER 9 POWDERHORN, SOUTH (3900) TORRENT OIL LLC 282171 DEHNERT UNIT 1 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 211534 DEHNERT UNIT 2 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 221923 DEHNERT UNIT 3 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 231735 DEMMER-ATZENHOFFER GAS UNIT 1 BELITZ (9200) REMORA OPERATING, LLC 038440 DENA FOREHAND 2H SUGARKANE (EAGLE FORD) PROLINE ENERGY RESOURCES INC 264458 DENNEY 1 MOOSE OIL & GAS (FRIO 2775) SOUNDLOGIC PROD. & EXPLOR., LLC 163090 DENNIS O'CONNOR ET AL -L- L 13 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 188455 DENNIS O'CONNOR ET AL -L- L 57 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 217977 DENNIS O'CONNOR ET AL -L- L 58 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 187120 DENNIS O'CONNOR ET AL -N- N 6 HUFF (2150) T-C OIL COMPANY, LLC 210062 DEVINE PROSPECT 1 BRUSHY CREEK (WILCOX -S-1-11200) WANDOO ENERGY, LLC 275683 DEWBRE-JOHNSON UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286289 DEWITT COUNTY HWY 87 1 DE WITT (EAGLE FORD SHALE) 2 D OIL & GAS LLC 263753 DICKSON ALLEN 1H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287781 DICKSON FOUNDATION GU 1 PROVIDENT CITY (WILCOX 11,900) HILCORP ENERGY COMPANY 288390 DICKSON FOUNDATION GU 2 HOUND DOG (MID. WILCOX 12000) HILCORP ENERGY COMPANY 232239 DICKSON-ALLEN UNIT 27H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 290342 DICKSON-ALLEN UNIT 27H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 290347 DICKSON, R. FOUNDATION 1 HOUND DOG (MID. WILCOX 12000) SEVENBAR RESOURCES, LLC 216386


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DICKSON, R. FOUNDATION 2 PROVIDENT CITY NE (LWR WX. CONS) SEVENBAR RESOURCES, LLC 225644 DIEBEL "B" 1 SALEM (3750) INNOVATIVE ENERGY SERVICES, INC. 210048 DIEBEL "C" 1 SALEM (3750) INNOVATIVE ENERGY SERVICES, INC. 217781 DIEBEL "D" 1 SALEM (3880) INNOVATIVE ENERGY SERVICES, INC. 207868 DIEBEL, ALFRED UNIT 1 BRANDT (WILCOX 11100) COASTLINE EXPLORATION, INC. 131923 DIETZEL 1 PRIDHAM LAKE (4210) STRATA OPERATING, INC. 284287 DIETZEL, N. L. 1 COLETTO CREEK (3600) DESANA DEVELOPMENT CORPORATION 144353 DILWORTH GAS UNIT 4 KARON (MACKHANK) FOURTH FLOOR OPERATING LLC 124043 DILWORTH GAS UNIT 4 KARON (SLICK) FOURTH FLOOR OPERATING LLC 175942 DILWORTH UNIT-WN 2AL KARON (MACKHANK) FOURTH FLOOR OPERATING LLC 119743 DILWORTH UNIT-WN 2AU KARON (SLICK) FOURTH FLOOR OPERATING LLC 002317 DILWORTH UNIT-WN 3 KARON (SLICK) FOURTH FLOOR OPERATING LLC 042748 DIMON SWD 1A MUY BUENO (9800) MAGNUM PRODUCING, LP 192708 DINCANS, A. T. JR. 2 TORO GRANDE (9000 SD) BLUE WING ENERGY, INC. 175969 DIRECT ASSETS UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 268162 DIRECT ASSETS UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 260314 DIRECT ASSETS UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278992 DIRECT ASSETS UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277123 DIRECT ASSETS UNIT 504H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284088 DIRECT ASSETS UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279863 DIRECT ASSETS UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279778 DIRECT ASSETS UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 277567 DIRECT ASSETS UNIT AC 5H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279166 DIRECT ASSETS UNIT AC 7H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 288187 DIRECT ASSETS UNIT AC 9H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275700 DIRKS 2 TULETA, SOUTH (HOCKLEY 3450) INLAND OCEAN, INC. 211113 DIRKS - MAYFIELD 1 TULETA, SOUTH (HOCKLEY 3450) INLAND OCEAN, INC. 200551 DLUGOSCH 1 YORKTOWN (7200) C.F.O., INC. 164631 DLUGOSCH 1H WARMSLEY, S. (10550) ATLAS OPERATING LLC 259313 DLUGOSCH 1H WARMSLEY, S. (10550) WHITING OIL AND GAS CORPORATION 248298 DLUGOSCH 3 YORKTOWN (7200) 5-D OPERATING INC 166238 DLUGOSCH A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 267300 DLUGOSCH A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281911 DLUGOSCH A 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281909 DLUGOSCH GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 261081 DLUGOSCH, PHILLIP 1 COOK (WILCOX 9400) B.P. PRODUCTIONS INC. 135416 DOBIE 2 JACKSON RANCH (YEGUA 5300) VAQUERO OPERATING 236792 DOBIE 3 DINERO, W. (4300) VAQUERO OPERATING 236805 DOBIE HEIRS 1 DINERO, W. (YEGUA 5300) SALT CREEK PRODUCTION, INC. 117865 DOBIE RANCH 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259025 DOBIE RANCH 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272371 DOBIE RANCH 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 278589 DOC-N/RR-C UNIT 1 HUFF (2900) T-C OIL COMPANY, LLC 261876 DOHMANN 2 POWDER RIVER (CONSOLIDATED) CXL ENERGY LLC 226042 DOHMANN "A" 4 WEESATCHE, SW. (COOK MT. 5300) NOG PRODUCTION & OPERATING LLC 234520 DOHMANN 80 2 WEESATCHE, S. ( COOK MT. 5300) NOG PRODUCTION & OPERATING LLC 280085 DOLAN 1A DOLAN (HOSTETTER) TIDEWATER MINERALS CORPORATION 102613 DOLORES 1 WORD, N. (EDWARDS) PROLINE ENERGY RESOURCES INC 228026 DOMINION FEE 1 HOLZMARK (11100, C2) XTO ENERGY INC. 211703 DOMINION FEE 2 HOLZMARK (10800) XTO ENERGY INC. 218589 DONAHUE 1 TULETA, WEST (3300) MILLENNIUM EXPLORATION CO. LLC 285761


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DONDLINGER, UNIT 1 BORCHERS, SOUTH (3500) MCDANIEL, D. L. 072735 DONNELLY 2 WORD (WILCOX, LOWER) TRIO CONSULTING & MANAGEMENT,LLC 279374 DONOGHUE GAS UNIT 5-E 1 OCONNOR RANCH (FRIO CONS.) APACHE CORPORATION 198013 DOPSLAUF 2 VIENNA (8400) COASTAL INVESTMENTS INC. 074541 DOROTHY NICHOLSON UNIT II 2 CLAYTON (SLICK 6450) KENNE EXPLORATION, INC. 148323 DOROTHY WALTERS 1 WILDCAT OVERTON PARK OIL & GAS LP 216730 DOROTIK G. U. 1R BORCHERS, SOUTH (3600) MAGNUM PRODUCING, LP 270531 DORRIS GAS UNIT 3 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 168422 DOS HOMBRES 1 B GEORGE WEST, W. (QUEEN CITY,LO.) SANDEL OPERATING COMPANY 201438 DOS PESOS RANCH 1 RAMIRENA (4900) CIMARRON ENGINEERING, LLC 283529 DOUBLE SEVENS 1 TYNAN (3600) GREAT TEXAS CRUDE INC. 174422 DOUBLE T 1 GAS UNIT 1 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 242691 DOUGHERTY-STRIEBECK 1 ELMS DEEP (8400) FIELD PETROLEUM CORP. 214353 DOUGHERTY-STRIEBECK 1 MOUNTAIN VIEW, N. (8100) DEGUELLO OPERATING LLC 235847 DOUGLAS 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 259979 DOUGLAS 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266388 DOUGLAS 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280459 DOUGLAS 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280456 DOUGLAS 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280457 DOUGLAS 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281232 DOUGLAS 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268094 DOVALINA GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266172 DOW 3 PROVIDENT CITY (3960, EAST) HOWARD EXPLORATION, INC. 268467 DOWELL, M. E. 4 PROVIDENT CITY, NE. (3390) B D PRODUCTION CO., INC. 273045 DREIER SWD 1 EDNA GORDON (FRIO 3260) SCORPION OIL & GAS, LLC 232974 DRELLEK UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288784 DREYER, WILLIAM 2 MISSION VALLEY (10,220) UNION GAS OPERATING COMPANY 179397 DREYER, WILLIAM 3 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 179765 DREYER, WILLIAM 4 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 206419 DROMGOOLE 'B' UNIT 3H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287661 DROMGOOLE 'B' UNIT 4H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287784 DROMGOOLE 'B' UNIT 7H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287785 DROMGOOLE 'B' UNIT 8H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 289757 DROMGOOLE "A" UNIT 1H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287782 DROMGOOLE "A" UNIT 2H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287658 DROMGOOLE "A" UNIT 3H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287659 DROMGOOLE "A" UNIT 4H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287783 DROMGOOLE "A" UNIT 5H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 289756 DROMGOOLE "A" UNIT 6H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287660 DRUMMOND, J. H. 3 WEST RANCH (GLASSCOCK) HILCORP ENERGY COMPANY 270513 DRUMMOND, J.H. 1E WEST RANCH (5000) ETABA OPERATING COMPANY 128671 DRUMMOND, J.H. 6 WEST RANCH (WARD) HILCORP ENERGY COMPANY 102146 DRUSHEL 1 BIG 12 (11,900) PETRODOME OPERATING, LLC 177233 DRUSHEL 1R CARMICHAEL (WILLIAM) PETRO-SMITH OPERATING LLC 214376 DRUSHEL 6AT CORDELE (4600) P&B PETROLEUM LLC 131366 DRUSHEL -A- 10 CORDELE ( 2550) P&B PETROLEUM LLC 129986 DRUSHEL -B- 5 CORDELE (1750 PINHEAD) P&B PETROLEUM LLC 131574 DRUSHEL -B- 6 CORDELE, WEST (TIGER) P&B PETROLEUM LLC 001407 DRUSHEL -B- 7 C CORDELE, W. (CLONE) P&B PETROLEUM LLC 130671 DRUSHEL -B- 7 T CORDELE, WEST (TRAYLOR, UPPER) P&B PETROLEUM LLC 130672 DRUSHEL -B- 14 CORDELE (1750 PINHEAD) P&B PETROLEUM LLC 131623


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DRUSHEL -B- 15 CORDELE ( 2550) P&B PETROLEUM LLC 135296 DRUSHEL S.G. -A- 14 CORDELE (2600) P&B PETROLEUM LLC 127268 DRUSHEL, S. G. 2A CORDELE (4000) P&B PETROLEUM LLC 133400 DRUSHEL, S. G. 9 CORDELE (3980) P&B PETROLEUM LLC 145054 DRUSHEL, S. G. 10 CORDELE (3825) P&B PETROLEUM LLC 146757 DRUSHEL, S. G. 15 CORDELE (M-2U) P&B PETROLEUM LLC 148726 DRUSHEL, S. G. "A" 16 CORDELE, WEST (TRAYLOR, LOWER) P&B PETROLEUM LLC 138315 DRUSHEL, S.G. 5 CORDELE (M-1U) P&B PETROLEUM LLC 131370 DRUSHEL, S.G. 6AC CORDELE, W. (CATAHOULA KARYN) P&B PETROLEUM LLC 131747 DRUSHEL, S.G. -A- 1 CORDELE (2610) P&B PETROLEUM LLC 129601 DRUSHELL, S. G. -A- O/A 3 CORDELE (M-1U) P&B PETROLEUM LLC 084313 DRY HOLLOW SWD 1 DRY HOLLOW (WILCOX MASSIVE) MERIT ENERGY COMPANY 176499 DUBOSE, GRADY & THAMES, LUCILLE 2 MINERAL, WEST (FRIO) CORDELE DEVELOPMENT CORPORATION 160700 DUDERSTADT 2 A MARSHALL (FRIO II B) CABEZA OIL AND GAS, LLC 213134 DUDERSTADT TRUST 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266387 DUDERSTADT 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 260466 DUDERSTADT-FROMME UNIT 1 BRANDT (RECKLAW) ESTATE OF JAMES L. NELSON 103948 DUDERSTADT, DARWIN 1 BRANDT (YEGUA 4700) UNIT PETROLEUM COMPANY 081659 DUDERSTADT, J. B. 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 232872 DUDERSTADT, J. B. 3 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 245525 DUGAT, LENA ET AL 2 COSDEN, WEST (VICKSBURG, UPPER) STARK PETROLEUM 118079 DUGGER, CHARLOTTE 3 TRAYLOR (8200) FULLER, ANCIL T. 126023 DUKE RANCH -F- 1 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 212605 DUKE RANCH -G- 1 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 235658 DUKE RANCH -K- 2 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 236290 DUKE RANCH -K- 2 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 220799 DUKE RANCH -M 3 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 220684 DUKE RANCH -M- 1 TEJAS (FRIO 5000) T-C OIL COMPANY, LLC 235661 DUKE RANCH -M- 2 TEJAS (FRIO 5000) T-C OIL COMPANY, LLC 255703 DUKE RANCH -M- 2 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 214431 DUKE RANCH -M- 3 TEJAS (FRIO 4600) T-C OIL COMPANY, LLC 255664 DUKE RANCH -S- 1 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 220279 DUKE RANCH -T- 1 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 212604 DUKE RANCH -V- 1 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 214365 DUKE RANCH -W- 1 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 216602 DUKE RANCH -10- 1 TEJAS (FRIO 5000) T-C OIL COMPANY, LLC 257650 DUKE RANCH -10- 1 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 220567 DUKE RANCH "F" 1 TEJAS (STRAY SAND) T-C OIL COMPANY, LLC 261263 DULLYE 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 259501 DULLYE 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280261 DULLYE 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280264 DULLYE 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280263 DUNN 1ST COQUAT (10500) PROLINE ENERGY RESOURCES INC 247652 DUNN 3 COQUAT (10500) PROLINE ENERGY RESOURCES INC 236813 DUNN "A" 1 DUNN (SLICK-WILCOX) 2 D OIL & GAS LLC 151556 DUNWOODY, CHARLES 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 129275 DUNWOODY, CHARLES 5 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 092602 DUNWOODY, CHARLES 6 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 129271 DUNWOODY, CHARLES 10 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 055372 DUNWOODY, CHARLES 13 HEYSER (F-39) MCGOWAN WORKING PARTNERS, INC. 129098 DUNWOODY, CHARLES 15 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 129277


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DUNWOODY, CHARLES 16 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 127343 DUNWOODY, CHARLES S. 14 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 090349 DUNWOODY, CHARLES S. 17 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089895 DUNWOODY, CHARLES S. (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089496 DUTY 1 NORMANNA, E. (FRIO) CHANDLER OIL & GAS, LLC 187895 DUTY 2 NORMANNA, E. (FRIO) CHANDLER OIL & GAS, LLC 163343 DUTY GAS UNIT 3 U MAXINE, EAST (9100) FOURTH FLOOR OPERATING LLC 115714 DUTY GAS UNIT 3-L MAXINE, EAST (9500) FOURTH FLOOR OPERATING LLC 159161 DUTY GAS UNIT 4 MAXINE, E. (10,000) FOURTH FLOOR OPERATING LLC 175658 DUTY GAS UNIT 5-C MAXINE, EAST (MACKHANK) FOURTH FLOOR OPERATING LLC 097328 DUTY GAS UNIT 5-T MAXINE, EAST (MASSIVE) FOURTH FLOOR OPERATING LLC 180278 DUTY GAS UNIT 5-T MAXINE, EAST (MASSIVE, LO.) FOURTH FLOOR OPERATING LLC 173834 DUTY, H.O. GAS UNIT 2 MAXINE, EAST (8400) FOURTH FLOOR OPERATING LLC 129327 DWORACZYK 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 263957 DWORACZYK 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268714 DWORACZYK 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268713 DWORACZYK 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268666 DWORACZYK 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271293 DWORACZYK 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272946 DWORACZYK 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272910 DWORACZYK 01 11H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281414 DWORACZYK 01 12H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281386 DWORACZYK 01 13H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281116 DZIUK A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 269043 E. BAKER GAS UNIT 3 MIKESKA (2ND TOM LYNE) PROLINE ENERGY RESOURCES INC 175924 E. BAKER GAS UNIT 4 MIKESKA (2ND TOM LYNE) PROLINE ENERGY RESOURCES INC 226073 E. BUTLER A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265520 E. BUTLER A 15H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288545 E. BUTLER A AC 1H SUGARKANE (AUSTIN CHALK) DEVON ENERGY PRODUCTION CO, L.P. 288546 E. HENKE 1 WEESATCHE, WEST (COOK MT.) ESTATE OF JAMES L. NELSON 242488 E. J. HOFFER 1 HALLETTSVILLE, S. (YEGUA 3650) TRIO CONSULTING & MANAGEMENT,LLC 280465 E. JOHNSON GAS UNIT 1-E 1 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 110781 E. L. MCCOLLUM ET AL UNIT 1 HELEN GOHLKE (WILCOX, LO.) VALENCE OPERATING COMPANY 068157 E. L. MCCOLLUM GAS UNIT 3 HELEN GOHLKE (WILCOX, LO.) VALENCE OPERATING COMPANY 248220 E. L. MCCOLLUM GAS UNIT 4 HELEN GOHLKE, SW. (WILCOX CONS.) VALENCE OPERATING COMPANY 258701 E. R. BLACKWELL GAS UNIT 1 1 KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 236294 E. WASKOW UNIT 1 KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 067138 E. YATES GAS UNIT 1 MORALES, N. (9250) KEBO OIL & GAS, INC. 162985 E.P.C. G U 1A 1 PROVIDENT CITY NE (LWR WX. CONS) HILCORP ENERGY COMPANY 188312 E.P.C. GU 1 2 PROVIDENT CITY (WILCOX 13000) HILCORP ENERGY COMPANY 290260 E.P.C. GU 1 2 PROVIDENT CITY NE (LWR WX. CONS) HILCORP ENERGY COMPANY 196997 E.P.C. GU 1 3 PROVIDENT CITY NE (LWR WX. CONS) HILCORP ENERGY COMPANY 222486 E.R.RHODES TRUST GAS UNIT 1 1 R KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 220782 EARNEST GAS UNIT 1 2 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 260956 EARNEST GAS UNIT 1 A 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 273083 EARP 1 COLOGNE (4800) PREMIER MINERALS, INC. 206436 EASLEY UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 258260 EASLEY UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278350 EASLEY UNIT 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286564 EASLEY UNIT 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286563 EASLEY UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279740


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ EASLEY UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 286206 EASLEY-HOLLMAN UNIT PSA 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286725 EAST HALLETTSVILLE GAS UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 138274 EAST HALLETTSVILLE GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 145402 EAST MAXINE UNIT 1 1 MAXINE, EAST (MASSIVE, LO.) BRITANCO, L.L.C. 070760 EAVES 1 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 173469 EAVES 3 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 179359 EAVES 5 SPEAKS, SW (MIDDLE WILCOX-CONS.) COASTAL PLAINS ENERGY, INC. 219896 EAVES 6 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 220979 EBERSTADT 1 CAESAR, SOUTH (WILCOX 9770) BRITANCO, L.L.C. 255700 EBERSTADT 4 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 208133 EBERSTADT 7 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 221072 EBERSTADT 10 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 239795 EBERSTADT 11 CAESAR, SOUTH (3060) ANDERSON OIL LTD. 248616 EBERSTADT 12 CAESAR, N. (PETTUS) ANDERSON OIL LTD. 254799 EBERSTADT 14 CAESAR, N. (PETTUS) ANDERSON OIL LTD. 256146 EBERSTADT 15 CAESAR, N. (PETTUS) ANDERSON OIL LTD. 258713 ECKHARDT RANCH GU1 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 275594 ED AND JACQUIE YANTA UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268970 EDGAR SMITH 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266389 EDLER, J. B. 25 C YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 211845 EDLER, J. B. 25 T YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 211840 EDLER, J. B. 28 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 231280 EDLER, J. B. 35 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 240437 EDLER, J. B. 37 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 240441 EDLER, J. B. 38 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 270857 EDLER, J. B. 39 YOUGEEN (PETERS, MIDDLE) WELDER EXPLORATION & PROD., INC. 272211 EDLER, J. B. 41 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 270484 EDLER, J.B. 14 YOUGEEN WELDER EXPLORATION & PROD., INC. 248343 EDLER, J.B. 20 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 258955 EDLER, J.B. 24 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 259886 EDLER, J.B. 26 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 262719 EDLER, J.B. 26 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 231281 EDLER, J.B. 29 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 253826 EDLER, J.B. 30 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 253841 EDLER, J.B. 32 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 252951 EDLER, J.B. 33 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 259322 EDLER, J.B. 36 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 259320 EDLER, J.B. 40 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 272213 EDLER, J.B, 23 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 183644 EDWARD H. SEIFERT, ET UX 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 194166 EDWARD KESELING GAS UNIT 1 1 YORKTOWN, NE. (EDWARDS) ENSIGN OPERATING LLC 247814 EDWARD ROEDER 02 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266403 EDWARD ROEDER 02 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271406 EDWARD ROEDER 02 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271327 EDWARD ROEDER 02 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271534 EDWARD ROEDER 03 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266401 EDWARDS 1 WILDCAT MERIT ENERGY COMPANY 183233 EDWARDS 1 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 245434 EDWARDS 1 MEDIO CREEK (4300) T-C OIL COMPANY, LLC 255115 EDWARDS 2 MEDIO CREEK, EAST (2900) T-C OIL COMPANY, LLC 255742


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ EDWARDS 3 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 256080 EDWARDS 10H EAGLEVILLE (EAGLE FORD-2) BPX OPERATING COMPANY 288389 EDWARDS GAS UNIT 1 DRY HOLLOW (WILCOX MASSIVE) MERIT ENERGY COMPANY 181571 EDWARDS GAS UNIT 1 DRY HOLLOW (WILCOX MASSIVE) MERIT ENERGY COMPANY 280476 EDWARDS GAS UNIT 2 DRY HOLLOW (ROCHELLE SAND) MERIT ENERGY COMPANY 184523 EDWARDS GAS UNIT 2 DRY HOLLOW (UPPER ROCHELLE) MERIT ENERGY COMPANY 184533 EDWARDS GAS UNIT 2 DRY HOLLOW (WILCOX MASSIVE) MERIT ENERGY COMPANY 184428 EDWARDS GAS UNIT 3 DRY HOLLOW (WILCOX LAMPLEY) MERIT ENERGY COMPANY 221963 EDWARDS GAS UNIT 3 DRY HOLLOW (13,900 WILCOX) MERIT ENERGY COMPANY 191554 EDWARDS GAS UNIT 4 DRY HOLLOW (13,900 WILCOX) MERIT ENERGY COMPANY 192439 EDWARDS GAS UNIT 5 DRY HOLLOW (WILCOX LAMPLEY) MERIT ENERGY COMPANY 218473 EDWARDS GAS UNIT 5 DRY HOLLOW (13,900 WILCOX) MERIT ENERGY COMPANY 198402 EGG-JUNKER ET AL UNIT 2 C ARNECKEVILLE (FRIO 2620) NELSON, JAMES L. 077813 EGG-JUNKER ET AL UNIT 2 T ARNECKEVILLE (YEGUA 4870) ESTATE OF JAMES L. NELSON 077252 EGG-JUNKER ET AL UNIT 3 ARNECKEVILLE (YEGUA 4870) ESTATE OF JAMES L. NELSON 078781 EICHHORN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266810 EICHHORN GAS UNIT 1 DRY HOLLOW (11024) B D PRODUCTION CO., INC. 245567 EICHHORN GAS UNIT 1 YORKTOWN, NE. (EDWARDS) ENSIGN OPERATING LLC 234204 EICHMAN - LANGE GAS UNIT 3 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 219387 EICHMAN GAS UNIT 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 211723 EICHMANN-LANGE GAS UNIT 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 212776 EILERS, W. A. 2 WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 090041 EILERS, W. A. 2H WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 185712 EILERS, W.A. 3H WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 217936 EILERS, WILLIAM A. 1 WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 086991 EINKAUF GAS UNIT 1 HALLETTSVILLE, SOUTH (ANDERSON) VALENCE OPERATING COMPANY 077822 EKSTRUM 1 PRIDHAM LAKE (1560) STRATA OPERATING, INC. 285565 EL OSO CATTLE COMPANY 24 MARY ELLEN OCONNOR (3100) DOLPHIN PETROLEUM, LP 154721 EL PASO NATURAL GAS 1 CHAPA, EAST (9500) A + INVESTMENTS A TEXAS LLC 140659 EL PASO NATURAL GAS 2 CHAPA (JACKSON 2100) DISCOVERY PETROLEUM, L.L.C. 046950 EL PASO NATURAL GAS 5 CHAPA, EAST (9800) TIDEWATER MINERALS CORPORATION 126974 EL PASO NATURAL GAS 10 CHAPA, WEST (LULING) TIDEWATER MINERALS CORPORATION 144228 EL PASO NATURAL GAS UNIT 6 CHAPA, EAST (12,400) A + INVESTMENTS A TEXAS LLC 172853 ELEANOR 1 SALEM (3425) APV MCCAMEY LLC 178459 ELENA HAUN GAS UNIT 2 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 233519 ELENA HAUN GAS UNIT 3 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 233522 ELIZABETH GAS UNIT 2 SPEARY (ROEDER 9100) P1 ENERGY, LLC 220609 ELIZABETH GAS UNIT 3 SPEARY (ROEDER 9100) P1 ENERGY, LLC 220623 ELIZONDO 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267756 ELIZONDO 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268838 ELIZONDO 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 288631 ELIZONDO 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 288632 ELIZONDO 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 288639 ELIZONDO 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 288634 ELLIOTT UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268798 ELLIS 2 PLACEDO, EAST (5840) ACOCK/ANAQUA OPERATING CO., LP 262454 ELLROY KARNEI UNIT 3 LIONS (CORONA CONSOLIDATED) BLUEFIN RESOURCES LLC 215100 ELLROY KARNEI UNIT 3 LIONS (CORONA CONSOLIDATED) BLUEFIN RESOURCES LLC 215566 ELLROY KARNEI UNIT 4 LIONS (CORONA CONSOLIDATED) BLUEFIN RESOURCES LLC 224969 ELS 1 C CABEZA CREEK (PETTUS) ESTATE OF JAMES L. NELSON 219274 ELS 1 T CABEZA CREEK (YEGUA) ESTATE OF JAMES L. NELSON 219277


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ELS, EMIL 1 BOYCE (WILCOX C SLICK) ESTATE OF JAMES L. NELSON 000980 ELS, EMIL 2 BOYCE (RECKLAW) ESTATE OF JAMES L. NELSON 000964 ELS, EMIL 2 BOYCE (WILCOX C SLICK) ESTATE OF JAMES L. NELSON 100333 ELS, EMIL 3 BOYCE (PETTUS) ADVANTAGE OIL & GAS, INC. 076174 ELS, HENRY 1 MELROSE (SLICK-WILCOX) ESTATE OF JAMES L. NELSON 038984 ENCINA 1 DALLAS HUSKY (WILCOX 9000) WELDER EXPLORATION & PROD., INC. 201724 ENCINA 2 DALLAS HUSKY (WILCOX 9000) WELDER EXPLORATION & PROD., INC. 206598 ENCINA 3 DALLAS HUSKY (WILCOX 9000) WELDER EXPLORATION & PROD., INC. 227686 ENGEL 1 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 285644 ENGEL GAS UNIT 2 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 287059 ENGELKING UNIT 2 TULETA, WEST (9570) BRITANCO, L.L.C. 125807 ENGLISH-WITTENBURG UNIT 1 BRIGHT FALCON (YEGUA 9600) DARTEX ENERGY CORPORATION 284815 ENKE 1 WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 165844 ERHARD 1 WORD, N. (8100) TRIO CONSULTING & MANAGEMENT,LLC 233653 ERIC & DEREK 2 BURNELL (PETTUS 3500) WELDER EXPLORATION & PROD., INC. 198535 ERICSON CLARK 1Y MAXINE, EAST (8400) SANDEL OPERATING COMPANY 223255 ERNA P. BENHAM GAS UNIT 7 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 250761 ERP, W. E. 1 PLUMMER-WILCOX (RECKLAW) ALLTEX OPERATING COMPANY 043178 ERP, W. E. 4 PLUMMER-WILCOX (RECKLAW) ALLTEX OPERATING COMPANY 059029 ERP, W. E. 5 PLUMMER-WILCOX (RECKLAW) ALLTEX OPERATING COMPANY 043611 ESCONDIDO CREEK 2 KAWITT (YEGUA) NATIONAL SURFACE & MINERALS, LLC 257117 ESCONDIDO CREEK 3 KAWITT (YEGUA) NATIONAL SURFACE & MINERALS, LLC 264510 ESCONDIDO CREEK 4 KAWITT (YEGUA) NATIONAL SURFACE & MINERALS, LLC 281452 ESCONDIDO CREEK 5 KAWITT (YEGUA) NATIONAL SURFACE & MINERALS, LLC 283970 ESCONDIDO CREEK GAS UNIT 1 SPEARY (MYHAND 8400) REPSOL OIL & GAS USA, LLC 220854 ESCONDIDO CREEK GAS UNIT 1 1 KAWITT (YEGUA) NATIONAL SURFACE & MINERALS, LLC 246135 ESCONDIDO CREEK GAS UNIT 1 1X SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 258143 ESCONDIDO CREEK GAS UNIT 1 B 1H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 288682 ESCONDIDO CREEK GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288669 ESCONDIDO CREEK GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266854 ESCONDIDO CREEK GAS UNIT 1 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288656 ESCONDIDO CREEK GAS UNIT 1 B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288670 ESCONDIDO CREEK GAS UNIT 1 B 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288657 ESCONDIDO CREEK RIVER RANCH GU 1 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 254915 ESCONDIDO CREEK-EVANGELINE (SA) D 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 271700 ESCONDIDO CREEK-WESS 3 (SA) B7 B 7H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288659 ESCONDIDO CREEK-WESS 3 (SA) B8 B 8H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 289646 ESCONDIDO CREEK-WESS 3 (SA) B8 B 8H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288672 ESCONDIDO CRK-EVANGELINE (SA) B2 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288655 ESKEW EAST 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 258137 ESKEW EAST 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272125 ESKEW EAST 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276095 ESKEW EAST 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276762 ESKEW EAST 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276763 ESKEW EAST 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276823 ESKEW EAST 7 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276997 ESKEW NORTH UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 256977 ESKEW NORTH UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 279843 ESKEW NORTH UNIT 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 279844 ESKEW NORTH UNIT 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 280381 ESKEW WEST UNIT 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258559


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ESKEW WEST UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 254315 ESKEW WEST UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269841 ESKEW WEST UNIT 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 285297 ESKEW WEST UNIT 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 285064 ESKEW WEST UNIT 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 285051 ESKEW WEST UNIT 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 284827 ESKEW WEST UNIT 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 285412 ESKEW WEST UNIT 702 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 284950 ESTELLE ROLF GAS UNIT NO 2 3 KENEDY, SW. (EDWARDS) ENSIGN OPERATING LLC 120698 ESTELLE ROLF GAS UNIT NO. 2 5 KENEDY, SW. (EDWARDS) ENSIGN OPERATING LLC 131972 ESTHER JACOBS GAS UNIT # 2 2 HOPE (WILCOX MASSIVE) KEBO OIL & GAS, INC. 188969 ESTHER JACOBS GAS UNIT #1 1 HOPE (WILCOX MASSIVE) KEBO OIL & GAS, INC. 176771 ESTHER JACOBS GAS UNIT #1 2 HOPE (WILCOX MASSIVE) KEBO OIL & GAS, INC. 202894 ESTHER JACOBS GAS UNIT #2 1 HOPE (WILCOX MASSIVE) KEBO OIL & GAS, INC. 182037 ETZLER, A. GAS UNIT 1 HALLETTSVILLE, SOUTH (ANDERSON) CAPITAL STAR OIL & GAS, INC. 077411 EVANGELINE GAS UNIT 1 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 249492 EVANS 1 CONQUISTADOR (SHORT SAND) TRIO CONSULTING & MANAGEMENT,LLC 287006 EVANS 1 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 269854 EVANS 1 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 262233 EVANS 2 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 264283 EVANS ENERGY LLC. S. BRASLAU 1 WILDCAT EVANS, S. LAVON JR. OPER. CO. 284575 EWALT, MARGIE 1 LITTLE JOHN (3970) ADVANTAGE OIL & GAS, INC. 087136 EYHORN GAS UNIT 1 1 KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 257673 EYHORN GAS UNIT 1 4 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 259630 EYHORN GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280343 EYHORN GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280396 EYHORN GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280364 EYHORN GAS UNIT 1 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280365 EYHORN GAS UNIT 1 B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280367 EYHORN GAS UNIT 1 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266141 EYHORN-BEGO TRUST (SA) D 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276384 EYHORN-BEGO TRUST (SA) D 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276733 EYHORN-BEGO TRUST (SA) D 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276944 EYHORN-BEGO TRUST (SA) E 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272590 F. MALEK UNIT D 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 257514 F. MALEK UNIT D 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270443 F. MALEK UNIT D 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 289985 F. MALEK UNIT D 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 289986 F. MALEK UNIT D 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 289992 F. MALEK UNIT D 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290278 F. MALEK UNIT D 7 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290279 F. MALEK UNIT D 8 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290097 F. MALEK UNIT L 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 264260 F. MALEK UNIT L 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266297 F. MALEK UNIT L 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270418 F. MALEK UNIT M 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263578 F. MALEK UNIT R 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263541 F. MALEK UNIT R 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270478 F. MALEK UNIT U 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266265 F. MALEK UNIT Y 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266478 F. SOBOTIK GAS UNIT # 1 5 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167878


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ F. SOBOTIK GAS UNIT #1 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 165406 F. SOBOTIK GAS UNIT #1 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167950 F.JOHNSON-J.TSCHIRHART 10H PSA 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287170 F.V.W. HEARD 6 GRETA (0-5-B) GRETA OPERATING COMPANY LLC 216126 FAGAN 1 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 078390 FAGAN 12 MCFADDIN (2500) ALLEGIANT RESOURCES, LLC 285169 FAGAN 16 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 286366 FAGAN 18 MCFADDIN (2750) ALLEGIANT RESOURCES, LLC 258978 FAGAN 18 MCFADDIN (5400 UPPER) ALLEGIANT RESOURCES, LLC 252334 FAGAN 20 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 285036 FAGAN 20 MCFADDIN (5050) ALLEGIANT RESOURCES, LLC 272718 FAGAN 32 MCFADDIN (3200) ALLEGIANT RESOURCES, LLC 251945 FAGAN -L- 6 FAGAN (3000) ANDERSON OIL LTD. 054618 FAGAN -M- 6 FAGAN (2100) ANDERSON OIL LTD. 123551 FAGAN -N- 2 FAGAN (2100) ANDERSON OIL LTD. 090951 FAGAN "A" A 4 MCFADDIN (5400 UPPER) ALLEGIANT RESOURCES, LLC 253009 FAGAN C 13 MCFADDIN (5150) ALLEGIANT RESOURCES, LLC 274293 FAGAN C 13 MCFADDIN (5300) ALLEGIANT RESOURCES, LLC 274194 FAGAN EST. -M- 2 FAGAN (2900) ANDERSON OIL LTD. 051442 FAGAN M 10 FAGAN (8050) ANDERSON OIL LTD. 277256 FAIN-BECK GAS UNIT 1 SAN DOMINGO (7700) SYDSON ENERGY, INC. 004068 FALKS GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268722 FALKS GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287637 FALKS GAS UNIT 1 C 2H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 287638 FALKS GAS UNIT 1 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288095 FALKS GAS UNIT 1 C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287861 FALKS GAS UNIT 1 C 5H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 288274 FALKS GAS UNIT 1 C 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288096 FALKS GAS UNIT 1 D 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272372 FALKS GAS UNIT 1 D 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 275116 FALKS GAS UNIT 1 D 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 275121 FAT TIRE 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 239499 FAVOR 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269534 FEE 2 CLARKSON (FRIO 5050) SHAY, MARY AGNES POWER 033946 FENNER 1 BRUSHY CREEK (FRIO 4200) COASTLINE EXPLORATION, INC. 256879 FENNER UNIT 1 THE PRINCE (YEGUA) RELENTLESS PERMIAN OPERATING LLC 262870 FENNER-BRIDGE FEE 1 FENNER (4120) BREITBURN OPERATING L.P. 141934 FERRELL "A" A 9 RAMIRENA (Y- 5) MOSBACHER ENERGY COMPANY 206758 FERRELL, D. L. 2 MOLINA (YEGUA) CORENERGY OPERATING GROUP, LLC 181497 FERRELL, I. A 9 RAMIRENA (Y-15A) MOSBACHER ENERGY COMPANY 203156 FERRY 1 YOAKUM, SE. (8900) AGUA LIBRE MIDSTREAM LLC 205588 FIELDS KLOTH 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266631 FIELDS UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 272180 FIELDS UNIT 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 272432 FIELDS UNIT 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 274668 FIELDS UNIT 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 274669 FIFER GAS UNIT 4 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 228146 FIFER UNIT 1 BIG OAK (WILCOX 10500) REMORA OPERATING, LLC 203219 FIFER UNIT 2 BIG OAK (WILCOX 10500) REMORA OPERATING, LLC 207791 FIMBEL 1 TELFERNER, EAST (4400) INNOVATIVE ENERGY SERVICES, INC. 203514 FIMBEL, EDWIN 2 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 128061


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FIMBEL, MARION & LA VERNIA JUNE 5 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 216498 FIMBEL, MARION & LAVERNIA JUNE 1 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 164667 FIMBEL, MARION & LAVERNIA JUNE 2 TELFERNER, NORTH (1330) CORDELE DEVELOPMENT CORPORATION 196592 FIMBEL, MARION & LAVERNIA JUNE 7 TELFERNER, NORTH (3600 FRIO) CORDELE DEVELOPMENT CORPORATION 227350 FIMBLE, EDWIN C. 1 TELFERNER, NORTH (1150) CORDELE DEVELOPMENT CORPORATION 211146 FINGER ESTATE 1 HOLZMARK (PETTUS) CONTINENTAL EXPLORATION, L.L.C. 235431 FINNEY-BARKER UNIT 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 270337 FINNEY-BARKER UNIT 2H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 270332 FIRST NATIONAL BANK OF GOLIAD 2 CABEZA CREEK, S. (RECKLAW 7700) APEX ENERGY, INC. 044420 FISHBECK 1 WORD, N. (7600) TRIO CONSULTING & MANAGEMENT,LLC 269116 FISHER A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 267627 FISHER B 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282140 FISHER B 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281919 FISHER B 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281931 FISHER B 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281927 FISHER B 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281928 FISHER C 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281958 FISHER C 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281959 FISHER C 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281957 FISHER C 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283372 FISHER C 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283359 FISHER C 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281966 FISHER C 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281956 FISHER C 9H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287772 FITZHENRY 1R ESPERANZA (TIPS) XTO ENERGY INC. 283367 FIVE STAR UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285500 FIVE STAR UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 285529 FLAME GAS UNIT 1 PAWNEE (EDWARDS) REPSOL OIL & GAS USA, LLC 245447 FOEGELLE G. U. 1 PANNA MARIA (EDWARDS) BLACKBRUSH O & G, LLC 033376 FOLEY 1 S SUNSET (MASSIVE-WILCOX) SOUTHERN RESOURCE COMPANY 254602 FORD GAS UNIT NO 1 1 YOAKUM (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 248930 FORSHAGE-HOWELL UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268772 FORSHAGE-HOWELL UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266362 FORSHAGE-HOWELL UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268771 FORSHAGE-HOWELL UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278349 FORSHAGE-HOWELL UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279841 FORSHAGE-HOWELL UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280131 FORSHAGE-HOWELL UNIT 503H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281078 FORSHAGE-HOWELL UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279714 FORSHAGE-HOWELL UNIT AC 11H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280179 FORSHAGE-HOWELL UNIT AC 12H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279126 FORT WORTH NATIONAL BANK 0001W BUCHEL (AUSTIN) 2 D OIL & GAS LLC 279774 FORT WORTH NATL. BK GU #1 1 BUCHEL (EDWARDS) ENSIGN OPERATING LLC 066437 FOSTER 1 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 230267 FOSTER UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265037 FOSTER UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277100 FOSTER UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277121 FOSTER UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277097 FOSTER UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277098 FOSTER UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277099 FOSTER UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288783


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FOSTER UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288719 FOSTER UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289223 FOSTER UNIT 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285564 FOSTER UNIT 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285539 FOSTER UNIT 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285281 FOSTER UNIT 502H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288703 FOSTER UNIT 504H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289222 FOSTER UNIT 505H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285556 FOSTER UNIT 507H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285305 FOSTER UNIT 508H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280185 FOSTER UNIT 509H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279840 FOSTER UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265038 FOSTER UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 288718 FOSTER UNIT AC 5H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 285916 FOSTER UNIT AC 9H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280471 FOSTER UNIT AC 10H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280526 FOSTER UNIT AC 11H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280492 FOSTER, WM. C. 3 MOONEY, E.(YEGUA 5450) MARWELL PETROLEUM LTD PARTNRSHIP 085771 FOSTERS 1 TIGER BEND (WILCOX) LGDC CORPORATION 229787 FOUR WAY RANCH 12 LOLITA, DEEP (MCMAHAN ZONE) MCGOWAN WORKING PARTNERS, INC. 252944 FOUR WAY RANCH 25 LOLITA, DEEP (7000 ZONE) MCGOWAN WORKING PARTNERS, INC. 254842 FOWLKES UNIT 1 DAVO (FRIO 2970) GREENSTONE ENERGY, LLC 216741 FOX 3 BLANCONIA (4000 SINTON) DYNAMIC PRODUCTION, INC. 289767 FOX, J. E. ET AL 6 CAESAR, SOUTH (5650) RINCON PETROLEUM CORPORATION 184610 FOX, W. J. 1 REFUGIO-FOX (5000) ANDERSON OIL LTD. 003898 FOX, W. J. 12 GRETA (L- 5) HILCORP ENERGY COMPANY 001819 FOX, W. J. "A" A 40 REFUGIO-FOX (1675) HILCORP ENERGY COMPANY 207253 FOX, W. J. "B" 30 GRETA (L- 5-A) HILCORP ENERGY COMPANY 228277 FOX, W. J. "B" 38 HYNES RANCH (FB-50) HILCORP ENERGY COMPANY 216253 FRANCES 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288791 FRANCIS WILSON 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267659 FRANEK 1 NOODLERONI (FRIO) VAQUERO OPERATING 151108 FRANK GU 1 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 273604 FRANK GU 2 DRY HOLLOW (WILCOX MASSIVE) MERIT ENERGY COMPANY 247347 FRANK GU 3 DRY HOLLOW (11024) MERIT ENERGY COMPANY 281641 FRANK GU 3 DRY HOLLOW (WILCOX MASSIVE) MERIT ENERGY COMPANY 246349 FRANK GU 3 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281465 FRANK GU 4 GARRETT (WILCOX A-1) MERIT ENERGY COMPANY 281354 FRANK MALEK 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271162 FRANK MALEK 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268940 FRANK MALEK 03 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268943 FRANK MALEK 04 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269687 FRANK MALEK 05 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269679 FRANK MALEK 05 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273110 FRANK MALEK 05 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272382 FRANK MALEK 05 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273021 FRANK MALEK 05 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272532 FRANK MALEK 06 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270302 FRANKE 1 JOBAR (YEGUA) MODERN EXPLORATION, INC. 236572 FRANKE JOHNSON-PATINO 4H PSA AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 287230 FRANKE JOHNSON-PATINO 7H PSA 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287163


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FRANKE UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 264903 FRANKE UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 259887 FRANKE UNIT 1H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266736 FRANKE UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280325 FRANKE UNIT 2H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 268223 FRANKE UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273078 FRANKE UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273079 FRANKE UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273081 FRANKE UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274278 FRANKE UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280326 FRANKE UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281772 FRANKE UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281773 FRANKE UNIT 501H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282002 FRANKE UNIT 502H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281774 FRANKE UNIT 503H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281775 FRANKE UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 282542 FRANKE UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 282336 FRANKE UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 274360 FRANKE UNIT AC 7H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 282424 FRANKE 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269562 FRANKE-FOSTER-PATINO SA10 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290456 FRANKE-FOSTER-PATINO SA11 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290455 FRANKE-JOHNSON UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280324 FRANKE-JOHNSON UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268958 FRANKE-JOHNSON UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268780 FRANKE-JOHNSON UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277287 FRANKE-JOHNSON UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277284 FRANKE-JOHNSON UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277620 FRANKE-JOHNSON UNIT 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285185 FRANKE-JOHNSON UNIT 13H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284802 FRANKE-JOHNSON UNIT 15H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285301 FRANKE-JOHNSON UNIT 16H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284179 FRANKE-JOHNSON UNIT 17H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284048 FRANKE-JOHNSON UNIT 18H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284524 FRANKE-JOHNSON UNIT 19H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284527 FRANKE-JOHNSON UNIT 20H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284528 FRANKE-JOHNSON UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279213 FRANKE-JOHNSON UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279234 FRANKE-JOHNSON UNIT AC 8H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 285263 FRANKE-JOHNSON UNIT AC 12H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 285186 FRANKE-JOHNSON UNIT AC 16H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 284525 FRANKE, WAYNE 1 MAETZE (3145) ESTATE OF JAMES L. NELSON 176240 FRANKLIN-VANCE UNIT 1 TEXANA, NORTH (FRIO 6900) MISSION RIVER SYSTEMS, INC. 149069 FRANZ UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266699 FRANZ UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266835 FRANZ UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276665 FRANZ UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276664 FRANZ-COWEY ORCA USW A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290050 FRANZ-COWEY ORCA USW B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290051 FRANZ-COWEY ORCA USW C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290111 FRANZ-COWEY ORCA USW D 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290053


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FRANZ-COWEY ORCA USW E 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290054 FRANZ-COWEY ORCA USW F 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290095 FRED BUCHEL GAS UNIT NO 1 3 MORAY (EDWARDS) ENSIGN OPERATING LLC 246339 FREE UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264896 FREE UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275765 FREE UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275768 FREE UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275769 FREE UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275771 FREE UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283128 FREE UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282613 FREE UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282731 FREE UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282732 FREE UNIT 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285187 FREE UNIT 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284752 FREE UNIT 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284751 FREELAND, J. M. 9 L COSDEN, WEST (WILCOX 8300) WELDER EXPLORATION & PROD., INC. 037711 FREEMAN 1 FORT MERRILL (YEGUA) DOUBLE PLAY OIL & GAS, INC 244339 FREEMAN 1 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 181727 FREEMAN 2 FT. MERRILL, NORTH (11800) BLUE WING ENERGY, INC. 242634 FREEMAN 2 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 216548 FREEMAN 4 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 185348 FREEMAN 4 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 185236 FREEMAN 5 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 177964 FREEMAN 6 SPEAKS, SW. (2500) MERIT ENERGY COMPANY 226857 FREEMAN 8 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 180374 FREEMAN 9 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 191255 FREEMAN 12 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 228183 FREEMAN 13 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 270823 FREEMAN 14 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 254390 FREEMAN, LYNELL 1 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 289356 FREEMAN, LYNELL 1 SPEAKS (16250 WILCOX) MERIT ENERGY COMPANY 250879 FREEMEN 2 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 177539 FRENCH ESTATE 1 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 173382 FRENCH ESTATE 3 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 192199 FRERICHS, F. L. 2 SHERIFF, WEST (FRIO 9000) TEXAS INDEPENDENT EXPLOR LTD. 139303 FREUDE UNIT 1 YOAKUM (8600) UNIT PETROLEUM COMPANY 141028 FRIAR-THOMAS 1 CARTER THOMAS (THIRD YEGUA) PACE OIL AND GAS COMPANY 163878 FRIAR-THOMAS G. U. #2 1 FRIAR RANCH, S. (CONSOLIDATED) D AND J OPERATING, LLC 174683 FRIAR-THOMAS G.U. #2 2 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 175941 FRIAR, A. 5 HELEN GOHLKE, W. (YEGUA LOWER) CAMOIL, INC. 148215 FRIAR, A. 7 HELEN GOHLKE ( YEGUA K) MOSAIC OIL LLC 152585 FRIAR, ALFRED "A" 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 216135 FRIAR, THOMAS 1 HELEN GOHLKE ( YEGUA K) MOSAIC OIL LLC 155170 FRIAR, THOMAS 2 HELEN GOHLKE ( YEGUA K) FIELD PETROLEUM CORP. 172084 FRIEDEL A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267638 FRIEDEL B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267921 FRIEDRICHS 1 MISSION VALLEY, W. (WILCOX G) VAQUERO OPERATING 277447 FRIEDRICHS GAS UNIT 1 FLINTSTONE (CRETACEOUS CHALK) ENSIGN OPERATING LLC 254465 FRIEDRICHS GAS UNIT NO. 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266419 FRIEDRICHS-HARSDORFF 1 ARNECKEVILLE (WILCOX A 8150) STUART, H. A. 000783 FRIEDRICKS, O. J. 1 WILHELM (2180) LOW-END OIL LLC 046504


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FRITZ WEISE GU "A" 2 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 233951 FROMME 1 BRANDT (WILCOX 9800) ESTATE OF JAMES L. NELSON 135925 FROMME, L. C. 1 GOLIAD, NORTH (2650) GINTHER, WARREN & GINTHER 001727 FRUEDE 2H YOAKUM (EDWARDS) UNIT PETROLEUM COMPANY 248624 FT. WORTH NATIONAL BANK #3 HMTF 3 BUCHEL (EDWARDS) ENSIGN OPERATING LLC 144645 FUCHS, BEATRICE 1 GUN POINT (WILCOX LOWER, GRAY) URBAN OIL & GAS GROUP, LLC 280391 FUCHS, BEATRICE 1 GUN POINT, S. (WILCOX, LOWER) URBAN OIL & GAS GROUP, LLC 237204 FULL SAIL 1 WORD, N. (EDWARDS) LGDC CORPORATION 230520 FULLER 1 MARSHALL (MIDDLE WILCOX) NOG PRODUCTION & OPERATING LLC 223745 FULLER - NEWTON, ET AL 1 HORDES CREEK (WILCOX CONS.) TEXAS GULF PRODUCTION CO. LLC 219200 FULLER-NEWTON ET AL 2 WAYNO BUENO (WILCOX MASSIVE) TEXAS GULF PRODUCTION CO. LLC 220588 FVW HEARD 3 GRETA (F-3 WEST) GRETA OPERATING COMPANY LLC 207785 G KLEIN C D-WSCH A ULW A 1 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 289731 G KLEIN C D-WSCH A ULW B 1 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 289192 G KLEIN C D-WSCH A ULW C 1 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 289732 G. J. TIPS GAS UNIT 1 KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 079465 G.B.R.A. 2 COLLETOVILLE CREEK (VICKS. 4100) B.P. PRODUCTIONS INC. 233589 GABRYSCH 3 GABRYSCH (5450) BEARD OIL COMPANY, LLC 281456 GAIDA A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266759 GALLINIPPER UNIT 3604 LAVACA BAY (F-46) NEUMIN PRODUCTION COMPANY 247105 GAMBLE GULLY GAS UNIT #1 1 GAMBLE GULLY (UP. SLICK SD.) DIRKS PETROLEUM COMPANY 082391 GAMBLE GULLY GAS UNIT #1 2 GAMBLE GULLY (UP. SLICK SD.) DIRKS PETROLEUM COMPANY 138151 GAMBLE GULLY GAS UNIT #5 1 GAMBLE GULLY (LULING) DIRKS PETROLEUM COMPANY 185068 GAMBLE GULLY GAS UNIT #5 2 L GAMBLE GULLY, SW. (7100) DIRKS PETROLEUM COMPANY 229444 GAMBLE GULLY GAS UNIT #5 2 S GAMBLE GULLY (SLICK SAND) DIRKS PETROLEUM COMPANY 228148 GANO GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 261758 GANO-DLUGOSCH (SA) A1 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284795 GANO-DLUGOSCH (SA) A2 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284791 GANO-DLUGOSCH (SA) A3 A 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284792 GANO-DLUGOSCH (SA) A4 A 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284793 GANO-DLUGOSCH (SA) A5 A 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284794 GAP BAND 2H SUGARKANE (EAGLE FORD) CALDERA OPERATING COMPANY LLC 284177 GARCITAS CREEK GU 1 INEZ (FRIO 5200) INNOVATIVE ENERGY SERVICES, INC. 207825 GARCITAS RANCH "A" 2 GARCITAS CREEK (6032) ATLAS OPERATING LLC 201436 GARDNER 1 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 267694 GARNER 1 WILDCAT REPUBLIC RESOURCES, LLC. 252933 GARNER 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 254215 GARNER 2R MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 288695 GARRETT 1 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281520 GARRETT 1 SUGARKANE (CRETACEOUS) EVX MIDSTREAM PARTNERS II LLC 266923 GARRETT 2 DRY HOLLOW (11024) MERIT ENERGY COMPANY 281673 GARRETT 2 DRY HOLLOW (WILCOX DAGG, NE) MERIT ENERGY COMPANY 281643 GARRETT 2 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281612 GARRETT 2 ESPERANZA (8800) MERIT ENERGY COMPANY 281638 GARRETT GAS UNIT 2H YOAKUM (EDWARDS) ATLAS OPERATING LLC 180883 GARVEL 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 264459 GARVEL 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268778 GARVEL 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268946 GARVEL 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268642 GARVEL 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280292 GARVEL 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280293


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ GARVEL 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280295 GARVEL 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280641 GARY-ENGLAND GAS UNIT 1 WARMSLEY (10,350) FLETCHER OPERATING, LLC 230774 GARY-ENGLAND GAS UNIT 1 WARMSLEY, S. (LOWER MIGURA) FLETCHER OPERATING, LLC 255351 GAS UNIT #1 (F-2 SAND) 2 SHERIFF (CONSOLIDATED) TRINIDAD RESOURCES, LLC 170016 GAUNTT, RUBY 1 C MONSON (QUEEN CITY) ARETE OPERATING COMPANY, LLC 050809 GAUNTT, RUBY 3 MONSON (QUEEN CITY) ARETE OPERATING COMPANY, LLC 212777 GAUS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266824 GAYLE 1 WILDCAT BLACKBRUSH O & G, LLC 206069 GAYLE UNIT 1 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 210529 GAYLE UNIT 2 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 212486 GAYLE UNIT 3 WILDCAT TRANSPACIFIC ENERGY, LLC 231737 GAYLE, ALBERTA 12-D WILDCAT KD ENERGY, LLC 170275 GAYLE, B. B. 1 HEINZEVILLE (RECKLAW) REMORA OPERATING, LLC 197432 GAYLE, B. B. 10 CLIP (FRIO UPPER) J&G OIL & GAS 145202 GB 1 NURSERY, S. (4130) CML EXPLORATION, LLC 254524 GEFFERT GAS UNIT NO. 2 1 A FANT, S. (WILCOX 11300) SANDEL OPERATING COMPANY 112470 GEFFERT GAS UNIT NO. 2 2 CHARLINE (FORNEY) SANDEL OPERATING COMPANY 225242 GEMELOS 'B' 2 WILDCAT MILLENNIUM EXPLORATION CO. LLC 289755 GENTRY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267412 GEO - HOPE 5 HOPE (FRIO 3079) CXL ENERGY LLC 192492 GEO-GOLDENROD 6 WILDCAT GEONATURAL RESOURCES, INC. 207266 GEO-GOLDENROD 04 COUSIN (4100) PITCHFORK OIL & GAS, INC. 202573 GEO-GOLDENROD 05 MORALES (4360) GEONATURAL RESOURCES, INC. 202574 GEO-HOPE 1 HOPE, NE. (3100) CXL ENERGY LLC 190690 GEO-HOPE 2 HOPE (VICKSBURG 3200) CXL ENERGY LLC 190683 GEO-HOPE 3 HOPE (MIOCENE 2500) CXL ENERGY LLC 190685 GEO-HOPE 4 HOPE (MIOCENE 3300) GEONATURAL RESOURCES, INC. 192499 GEORGE WEST ESTATE 6 L FANT (WILCOX 10200) BYNG ENERGY GROUP, INC. 104082 GEORGE WEST ESTATE 6 U FANT (WILCOX 9500) BYNG ENERGY GROUP, INC. 104083 GEORGIA HOFF, ET. AL. 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 200771 GEORGIA MAE GRAHMANN GAS UNIT 2 1 JANSKY (10350) SULPHUR RIVER EXPLORATION, INC. 101606 GEP, LP / GOFF MINERAL TRUST 4 ELBERT GOFF (3700) GOLDENROD GAS, INC. 252902 GEP, LP/GOFF MINERAL TRUST 5 ELBERT GOFF (FRIO 4230) GOLDENROD GAS, INC. 249711 GERALD 1 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 224841 GERALD BURKE SCHULZ 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269392 GERALD BURKE SCHULZ 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269645 GERDES 1 JANSKY (10600) ESCONDIDO PETROLEUM COMPANY, INC 206473 GERDES 1 MONT (WILCOX 10640) TRIO CONSULTING & MANAGEMENT,LLC 207663 GERDES "A" UNIT 1 WORD (8900) TRIO CONSULTING & MANAGEMENT,LLC 222462 GERDES UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 271792 GERDES UNIT 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 272177 GERDES UNIT 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 275125 GERDES UNIT 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 275126 GERDES UNIT 5H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288224 GERDES UNIT 6H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288225 GERDES-LANGHOFF 1L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 289035 GERDES-RATHKAMP 1L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 289147 GERHARDT & OTTILLIA BRUNS 2W RIC-JOHN (3250) TEXXCO ENERGY SERVICES INC 224709 GERLICH GAS UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 101286 GERLICH GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 106483


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ GERLICH GAS UNIT 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167415 GERLICH GAS UNIT 5 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 166989 GERLICH WILCOX GAS UNIT 3 WILDCAT CAPITAL STAR OIL & GAS, INC. 163350 GFL/CRUZ 0001GF PANNA MARIA (CARRIZO) ECTERO SOUTHWEST, LLC 269322 GILL 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268941 GILL, CLAUDIA 2 TULETA, WEST (HOCKLEY 3100) BRITANCO, L.L.C. 184625 GILL, CLAUDIA P. 1 TULETA, WEST (VICKSBURG G) BRITANCO, L.L.C. 188044 GILLETT 1 COQUAT (12700) PROLINE ENERGY RESOURCES INC 195480 GILLETT 2 COQUAT (12700) PROLINE ENERGY RESOURCES INC 202653 GILLIGAN 1 VIRGIL (YEGUA 5350) WELDER EXPLORATION & PROD., INC. 256149 GILLIGAN 2 VIRGIL (YEGUA 5350) WELDER EXPLORATION & PROD., INC. 262984 GINGERICH, GEORGE C. 1D DIRKS (1850) BRITANCO, L.L.C. 190456 GINGERICH, GEORGE C. 2D TULETA, WEST (HOCKLEY 3100) BRITANCO, L.L.C. 112508 GIPS 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 260289 GISLER-ESCAMILLA 1ST RUNGE, E. (ROEDER) 2 D OIL & GAS LLC 239818 GKT-COLLINS EF UNIT 1H SUGARKANE (EAGLE FORD) SILVERBOW RESOURCES OPER, LLC 285048 GKT-MAP EF UNIT 1H SUGARKANE (EAGLE FORD) SILVERBOW RESOURCES OPER, LLC 284149 GKT-MAP EF UNIT 2H SUGARKANE (EAGLE FORD) SILVERBOW RESOURCES OPER, LLC 285697 GLASER 1 MAYO (5655) JONES & ALLEN 120181 GLEINSER 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 229151 GLOOR 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266423 GODFREY 2 HOUDMAN (WILCOX 8200) KEBO OIL & GAS, INC. 256247 GODFREY 3 HOUDMAN (WILCOX 8200) KEBO OIL & GAS, INC. 261734 GODFREY 4 HOUDMAN (WILCOX 8200) KEBO OIL & GAS, INC. 264518 GODFREY BRYSCH GAS UNIT 2 1 GEORGE WEST, WEST (10500) SANDEL OPERATING COMPANY 096618 GODFREY NELSON GAS UNIT 1 HOUDMANN-BUXKAMPER (9950) KEBO OIL & GAS, INC. 248652 GODFREY, PAWLIK GAS UNIT 2 L MAXINE, EAST (MATULA) FAULCONER, VERNON E., INC. 117969 GODFREY, PAWLIK GAS UNIT 2 U MAXINE, EAST (8700) FAULCONER, VERNON E., INC. 119467 GOEBEL, O. A. HEIRS 2 GOEBEL (9600) KALER ENERGY CORP. 247301 GOEHRING 1 BRANDT, N. (REKLAW) RAVEN FOREST OPERATING, LLC 125495 GOEHRING, ROBERT F. 1 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 238153 GOEHRING, ROBERT F. 3 BRANDT, N. (REKLAW) RAVEN FOREST OPERATING, LLC 129349 GOFF 1 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 212052 GOFF 2 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 213895 GOFF A 1 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 216113 GOFF MINERAL TRUST 1 GOLDENROD CREEK (GOFF) J&G OIL & GAS 184797 GOHLKE DEEP GAS UNIT 1 KULAWIK (1ST ROEDER) CIMROD, LLC 150336 GOHLKE UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266697 GOHLKE UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270234 GOHLKE UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276287 GOHMERT GAS UNIT #1 1 BUCHEL (EDWARDS) ENSIGN OPERATING LLC 076401 GOING, WINNIE MADGE GAS UNIT 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 203952 GOING, WINNIE MADGE GAS UNIT 2 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 209738 GOLDEN ROD 1 PROVIDENT CITY NE (LWR WX. CONS) HILCORP ENERGY COMPANY 289748 GOLDEN ROD GAS UNIT 1 PROVIDENT CITY (WILCOX 7) HILCORP ENERGY COMPANY 263204 GOLDSTON, W. L. JR. ET AL 1 LAKE PLACEDO (5590) ELLSWORTH, H. P. O&G PROPERTIES 147546 GOLIAD NAVAL AIR STATION 1 DALLAS HUSKY, NE. (HET) WELDER EXPLORATION & PROD., INC. 250759 GOLSCH-EDWARDS GAS UNIT 3 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 108309 GONZALES UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263685 GONZALES, FELICE 1 HELEN GOHLKE, SW. (WILCOX CONS.) SYDRI OPERATING, LLC 129362 GONZALES, MAURO ESTATE 9 HELEN GOHLKE, SW. (WILCOX CONS.) SYDRI OPERATING, LLC 124189


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ GOOD PHELAN 1H EAGLEVILLE (EAGLE FORD-2) ROSEWOOD RESOURCES, INC. 288720 GOOD PHELAN 2H EAGLEVILLE (EAGLE FORD-2) ROSEWOOD RESOURCES, INC. 288721 GOODRICH-POINDEXTER UNIT 01 HOPE (MIOCENE 1500) HYDROCARBON OPERATING, INC. 286947 GORDIN ESTATE 3 LA WARD, NORTH (5500) JURA ENERGY OPERATING LLC 145982 GORDIN ESTATE 7 WILDCAT JURA ENERGY OPERATING LLC 155880 GORDIN ESTATE 25 LA WARD, NORTH JURA ENERGY OPERATING LLC 103664 GORDIN ESTATE 31 LA WARD, NORTH (5800 -A-) JURA ENERGY OPERATING LLC 254482 GORDIN ESTATE 31 LA WARD, NORTH (5900) JURA ENERGY OPERATING LLC 211132 GORDIN ESTATE 33 LA WARD, NORTH (5500) JURA ENERGY OPERATING LLC 141104 GORDIN ESTATE 35 LA WARD, NORTH JURA ENERGY OPERATING LLC 137861 GORDIN ESTATE 38 LA WARD, NORTH (5600) JURA ENERGY OPERATING LLC 158715 GORDON 3 COLOGNE (1400) EXPRESS OIL CO. 230148 GORDON G. U. 4 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 171216 GORDON GAS UNIT 8 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 214168 GORDON GAS UNIT 9 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 238768 GORDON TALK GAS UNIT 1 MALO DOMINGO (WILCOX 10800) WHITE MARLIN OPERATING CO, LLC 092924 GORDON, ALBERT 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 058334 GORDON, GEORGE E. 2 COLOGNE (1950) EXPRESS OIL CO. 198630 GOREE 1 MINERAL, WEST (11000) BRITANCO, L.L.C. 228510 GOREE, AUDREY C. 1D YOWARD (9200) BRITANCO, L.L.C. 084251 GOS 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288748 GOSSETT UNIT 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 271735 GOTT 3 HOPE, NE. (2700) STRATCO OPERATING CO., INC. 220705 GOTT "A" 1 HOPE (MIOCENE 2950) STRATCO OPERATING CO., INC. 229333 GRAEF GAS UNIT 1 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268200 GRAEF GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277738 GRAEF GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277736 GRAEF GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277742 GRAEF GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287830 GRAEF GAS UNIT 1 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287860 GRAEF GAS UNIT 1 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287687 GRAEF GAS UNIT 1 C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287718 GRAEF GAS UNIT 1 C 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287831 GRAEF GAS UNIT 1 C 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287719 GRAFE, MARY 1 GOOD HOPE (WICK 10100) BRITANCO, L.L.C. 123030 GRAHAM 1 CORDELE, WEST (2600) GREAT TEXAS CRUDE INC. 175657 GRAHMANN UNIT A 1H EAGLEVILLE (EAGLE FORD-2) ZAZA ENERGY, LLC 269150 GRANBERRY 1 WORD (WILCOX, LOWER) TRIO CONSULTING & MANAGEMENT,LLC 287233 GRANBERRY A 1 PAISANO CREEK (YEGUA) APEX ENERGY, INC. 272362 GRANBERRY-JACKSON 1 FT. MERRILL, NORTH (11800) JAMEX, INC. 220211 GRANBERRY, W. M. GAS UNIT 1 SWEET HOME (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 102145 GRANT 1 SUGARKANE (CRETACEOUS) EVX MIDSTREAM PARTNERS II LLC 265539 GRANT-CANNAN 1 BERCLAIR (LULING) WELDER EXPLORATION & PROD., INC. 186795 GRANT, JACK 1G BERCLAIR (WILCOX 10,400) WELDER EXPLORATION & PROD., INC. 141227 GRAVES 6 WESTHOFF (COMBINED ASSOCIATED) ACOCK/ANAQUA OPERATING CO., LP 234225 GRAVES, T.A. 2 LA WARD, NORTH (5800 -A-) ACOCK/ANAQUA OPERATING CO., LP 198620 GREEN GAS UNIT 1 CHRISTMAS (12300) FLETCHER OPERATING, LLC 220059 GREEN GAS UNIT 1 CHRISTMAS, SOUTH (GANSON) FLETCHER OPERATING, LLC 263745 GREEN GAS UNIT 2 WARMSLEY (VAUGHN) FLETCHER OPERATING, LLC 235671 GREEN, E. E. 2 COSDEN, WEST (WILCOX 7800) NOG PRODUCTION & OPERATING LLC 033595 GREEN, HELEN 1 CAUSEY (11,100) VISION OIL AND GAS LLC 222200


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ GREEN, HELEN 1 GARDEN (MIDDLE WILCOX) VISION OIL AND GAS LLC 224274 GREER 1 FLYING -M- (FRIO 4925) BLUE WING ENERGY, INC. 244755 GREIVE UNIT 6H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 287440 GREMMELL 1B PETTUS, WEST (1100) CHANDLER OIL & GAS, LLC 171775 GRESHAM GAS UNIT 2 FRANCITAS (FRIO 8600) DALLAS PETROLEUM GROUP, LLC 272687 GRIFFITH 1 BERKOW (VICKSBURG STRINGER) L & F DRILLING CO., INC. (1) 110373 GRISSOM 1 CAESAR, SOUTH (9600) FLETCHER OPERATING, LLC 193795 GRIZZLE 1 WILDCAT BLAKENERGY OPERATING, LLC 259532 GRIZZLE 1 BEGO (CONSOLIDATED) BLAKENERGY OPERATING, LLC 214517 GROBERG, F. 1 STEWART (6700 FRIO) KD ENERGY, LLC 131511 GROSS MIXON USW A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290921 GROSS MIXON USW B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290922 GROSS MIXON USW D 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290995 GROSS MIXON USW E 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 290884 GROSS MIXON USW F 702 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 290874 GROSS UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259788 GROSS UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270873 GROSSMAN, SIMON 1 GAMBLE GULLY (QUEEN CITY) DIRKS PETROLEUM COMPANY 071443 GRUETZMACHER 2 WEESATCHE, WEST (10,400) NOG PRODUCTION & OPERATING LLC 170642 GUEVARA A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265749 GUEVARA B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 267074 GUEVARA B 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289852 GUEVARA B 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289865 GUEVARA B 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289854 GUEVARA B AC 1H SUGARKANE (AUSTIN CHALK) DEVON ENERGY PRODUCTION CO, L.P. 289866 GUMM, LUCILLE 1 ALBRECHT (REKLAW) RAMTEX ENERGY LLC 194637 GUS TIPS GAS UNIT 1 1 KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 244761 GUS TIPS GAS UNIT 1 2 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 257651 GUS TIPS GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 264995 GUS TIPS GAS UNIT 1 D 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280955 GUS TIPS-RUNGE 1 D 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281276 GUS TIPS-RUNGE 1 D 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281313 GUS TIPS-RUNGE 1 (SA) C2 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284335 GUS TIPS-RUNGE 1 (SA) C3 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284455 GUS TIPS-RUNGE 1 (SA) C4 C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284456 GUS TIPS-RUNGE 1 (SA) D4 D 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288491 GUS TIPS-RUNGE 1 (SA) D5 D 5H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 288496 GWOSDZ A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282141 GWOSDZ A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282722 GWOSDZ A 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282955 GWOSDZ A 10H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282779 GWOSDZ A 14H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282993 GWOSDZ UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268558 H & P 2 ELOISE (6760) BLUE WING ENERGY, INC. 260674 H J SCHULZ 5H GAS UNIT 3 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 232332 H SCHULZ 4H GAS UNIT 2 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 226839 H SISTERS A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266749 H SISTERS A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284104 H SISTERS A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283751 H SISTERS A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284068 H SISTERS A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283752


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ H SISTERS A 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283755 H SISTERS B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 268544 H SISTERS B 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283754 H SISTERS B 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283982 H SISTERS B 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284055 H SISTERS B 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284056 H SISTERS B 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283756 H SISTERS B 9H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283757 H SISTERS B 10H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284053 H SISTERS B 11H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284054 H SISTERS B 12H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284050 H. J. SCHULZ 5H GAS UNIT 2 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 229704 H. MUELLER 18A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282071 H. MUELLER 18A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281905 H. T. CHAPMAN 04 01H SUGARKANE (EAGLE FORD) SEA EAGLE FORD, LLC 267247 HACKBARTH 1 LA WARD, NORTH (6300) ACOCK/ANAQUA OPERATING CO., LP 284661 HACKBARTH 2D WESTHOFF (COMBINED ASSOCIATED) ACOCK/ANAQUA OPERATING CO., LP 247519 HACKBARTH 5 WESTHOFF (COMBINED ASSOCIATED) ACOCK/ANAQUA OPERATING CO., LP 250766 HACKBARTH-BURES 1 LA WARD, NORTH (5700) ACOCK/ANAQUA OPERATING CO., LP 284591 HACKNEY, BESSIE 2 SPEARY (WILCOX 9500) P1 ENERGY, LLC 217745 HACKNEY, BESSIE UNIT 1 SPEARY (WILCOX 9500) P1 ENERGY, LLC 128113 HACKNEY, JOHN A. 1 SPEARY (HACKNEY 8600) P1 ENERGY, LLC 146563 HAHN 3 LONG MOTT, EAST (7100) KEBO OIL & GAS, INC. 272632 HAHN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264159 HAHN DEW 1H EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 268704 HAHN DEW 2H EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 273147 HAHN DEW 3H EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 273149 HAHN, O. F. 1 COLOMA CREEK, NORTH (7600) CREST PETROLEUM, LLC 061398 HAHN, O.F. 3 L COLOMA CREEK, NORTH (8400) CREST PETROLEUM, LLC 072875 HAHN, O.F. 3 U COLOMA CREEK, NORTH (8300) HAHN, OSCAR 072874 HAILEY 1 MIKESKA (PETTUS) CORENERGY OPERATING GROUP, LLC 173074 HAILEY 2 MIKESKA (PETTUS) CORENERGY OPERATING GROUP, LLC 174436 HALEPESKA GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 260868 HALEPESKA GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277731 HALEPESKA GAS UNIT 1 A 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277733 HALEPESKA GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266166 HALEPESKA GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 274139 HALEPESKA GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 278984 HALL 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 222962 HALL 1 TULETA, WEST (SLICK-WILCOX 7500) BRITANCO, L.L.C. 004514 HALL, IMOGENE 6 U TULETA, WEST (VICKSBURG G) BRITANCO, L.L.C. 114166 HALL, IMOGENE 8 TULETA, WEST (VICKSBURG G) BRITANCO, L.L.C. 284505 HAMILTON 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285884 HAMILTON A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266859 HAMILTON A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282077 HAMILTON A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282078 HAMILTON A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281953 HAMILTON A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282085 HAMILTON A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282088 HAMILTON GAS UNIT NO 1 1 MORAY (EDWARDS) ENSIGN OPERATING LLC 264151 HAMILTON TRUST A 405 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276972


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HAMILTON TRUST A-405 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 259352 HAMILTON TRUST A-405 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270246 HAMILTON TRUST A-405 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 277479 HAMILTON TRUST A-405 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 277480 HAMILTON TRUST A-405 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 277910 HAMILTON TRUST A-405 8 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 277912 HAMILTON TRUST A-405 9 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 277905 HAMILTON TRUST UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 260706 HAMILTON TRUST UNIT C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 261182 HAMILTON TRUST UNIT C 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270930 HAMILTON TRUST UNIT C 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270903 HAMILTON TRUST UNIT C 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 272310 HAMILTON TRUST UNIT D 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 263687 HAMILTON TRUST UNIT D 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270249 HAMILTON TRUST UNIT D 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276976 HAMILTON TRUST UNIT D 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276923 HAMILTON WALLIS 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 271734 HAMMAN 1H SUGARKANE (EAGLE FORD) PROLINE ENERGY RESOURCES INC 264456 HAMMAN & ANDERSON 7 HORDES CREEK (LULING) WYNN-CROSBY OPERATING, LTD. 279010 HAMMAN & ANDERSON 8 HORDES CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 226493 HAMMAN & ANDERSON GAS UNIT 3 4 HORDES CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 195472 HANCOCK -I- 1 PROVIDENT CITY (WILCOX 12,500) COASTAL PLAINS ENERGY, INC. 088467 HANCOCK "H" 2 PROVIDENT CITY (WILCOX 10800) COASTAL PLAINS ENERGY, INC. 257223 HANCOCK ESTATE "B" 2 PROVIDENT CITY (WILCOX 12,500) COASTAL PLAINS ENERGY, INC. 163129 HANCOCK GU #1 7 PROVIDENT CITY (WILCOX 14,000) XTO ENERGY INC. 221079 HANCOCK GU 1 1R PROVIDENT CITY (WILCOX 11,900) XTO ENERGY INC. 232304 HANCOCK, D.W. A 4 CLAREVILLE (HOCKLEY 4500) H&G OIL & GAS COMPANY, INC. 100147 HANCOCK, ET AL G.U. 1 PROVIDENT CITY (WILCOX 14,000) XTO ENERGY INC. 156186 HANCOCK, EVA RUTH 1 PROVIDENT CITY (WILCOX 14800 SD) XTO ENERGY INC. 186323 HANCOCK, JOHN W. SR. 1 PROVIDENT CITY (WILCOX 16,300) XTO ENERGY INC. 182556 HANCOCK, JOHN W. SR. A 2 WILDCAT XTO ENERGY INC. 188641 HANDY 02 0101H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 258773 HANDY 02 0102H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271400 HANDY 02 0103H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269118 HANDY 02 0104H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269134 HANDY 02 0105H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270407 HANDY 02 0106H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271809 HANDY 02 0107H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271600 HANDY 02 0201H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270294 HANDY 02 0202H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269682 HANDY 02 0203H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269681 HANDY 02 0204H SUGARKANE (AUSTIN CHALK) ENSIGN OPERATING LLC 272139 HANDY 02 0204H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270921 HANDY 02 0205H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269109 HANDY 02 0206H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269115 HANDY 02 0207H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269196 HANDY-ROARK UNIT 1 BERCLAIR, SW. (3300) T-C OIL COMPANY, LLC 257901 HANNA, ROSS 5 MAYO (3575) KD ENERGY, LLC 134994 HANSEN A 1 H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 270648 HARDESTY UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264514 HARDT, E. B. 3 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 076581


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HARING 1 MCCASKILL (LOWER WILCOX) TIDEWATER MINERALS CORPORATION 192592 HARITHAS, ANN W. 6 SARCO CREEK (2800) T-C OIL COMPANY, LLC 159372 HARKINS 6 C CIRCLE -A- (4230) CHARRO OPERATING, L.L.C. 128618 HARKINS ESTATE 1 DINERO, WEST (HOCKLEY 4900) CASKIDS OPERATING COMPANY 231909 HARLAN METTING 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 259857 HARLAN METTING 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266033 HARLAN METTING 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280294 HARLAN METTING 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280297 HARLAN METTING 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280309 HARLAN METTING 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280298 HARLAN METTING 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280316 HARLAN METTING 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280317 HARLAN METTING 01 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280318 HARLAN NELSON 1 HOUDMAN (WILCOX 8200) KEBO OIL & GAS, INC. 258706 HAROLD GOHMERT 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268964 HARPER 1 CADENCE RELIANCE (WILCOX) FAULCONER, VERNON E., INC. 212495 HARPER 2 CHARCO, SE. (WILCOX 9600) FAULCONER, VERNON E., INC. 223733 HARRIS -N- 2 HARRIS, NE. (MASSIVE SEG. C) STRATCO OPERATING CO., INC. 118346 HARRIS PEARL -A- MACKHANK G.U. 4 HARRIS (WILCOX-MACKHANK) UNIT PETROLEUM COMPANY 090136 HARRIS-SKAGGS UNIT 1 CLAYTON (950) MACERO MINERALS, INC. 099341 HARRISON ET AL GAS UNIT 1 NORDHEIM, SW. (11,400) BAY ROCK OPERATING COMPANY 188223 HARRY SCHULTZ 1 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 215289 HARRY SCHULZ 2 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 229986 HARTMAN A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264847 HARTMAN A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287626 HARTMAN A 9H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287627 HARTMAN A 10H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287645 HARTMAN A 11H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287628 HARTMAN A 12H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287646 HARTMAN A 13H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287776 HARTMAN UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264314 HARTMAN UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266872 HARTMAN, VICTOR -A- 1 ARNECKEVILLE (YEGUA 5260) ARCH OIL & GAS, LLC 131249 HARTMAN, W. 1 ARNECKEVILLE (WILCOX A 7700) CXL ENERGY LLC 136463 HARTT 5 WILDCAT PROPERTY PRODUCING CO. 178782 HARTT G.U. 1 1 PROVIDENT CITY (WILCOX 11,900) HILCORP ENERGY COMPANY 192163 HARTT UNIT 6 PROVIDENT CITY (FRIO) PROPERTY PRODUCING CO. 182517 HARTT, J. 1 PROVIDENT CITY (YEGUA 5400) PROPERTY PRODUCING CO. 089037 HARTT, JAMES 2 PHILLIPS-MEAD (MIOCENE 1850) PROPERTY PRODUCING CO. 061605 HARTZENDORF 1 SLIVA, SOUTHWEST (3600) TEXAS SOUTHERN PETROLEUM CORP. 243894 HARVEY RENGER GAS UNIT 2 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 216425 HARVEY RENGER GAS UNIT 3 SPEAKS, SW. (SIMPSON) MERIT ENERGY COMPANY 269896 HARVEY RENGER GAS UNIT 4 SPEAKS, SW. (SIMPSON) MERIT ENERGY COMPANY 274357 HARVEY RENGER GAS UNIT 5 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 223464 HARVEY RENGER GAS UNIT 6 SPEAKS, SW. (SIMPSON) MERIT ENERGY COMPANY 274191 HARVEY RENGER GAS UNIT 07 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 236574 HARVEY RENGER GAS UNIT NO. 1 1 RYAN (WILCOX 10,600) MERIT ENERGY COMPANY 242627 HARVEY, J.H. ESTATE 3 VIENNA (FRIO 3000) MOOSE OPERATING CO., INC. 157888 HASDORFF "A" 1 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 203210 HASDORFF "A" 3 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 214304 HATCHETT, N. P. 3 CLAYTON (BLOCK 86 SD) HEDRICK PRODUCTION INC. 061608


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HATHAWAY EDWARDS GAS UNIT 2 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 082190 HAUGLUM 3H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285845 HAUGLUM 4H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285614 HAUGLUM 5H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285750 HAUGLUM 7H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285751 HAUGLUM 8H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285909 HAUGLUM 10H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285753 HAUGLUM 11H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285754 HAUGLUM 12H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285742 HAUGLUM 13H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285755 HAUGLUM 14H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285910 HAUGLUM 15H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285847 HAUGLUM A 1H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285911 HAUGLUM A 2H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285743 HAUGLUM B 1H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285760 HAUGLUM B 2H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285745 HAUGLUM B 3H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285848 HAUGLUM B 4H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285861 HAUGLUM D 2H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285914 HAUGLUM D 3H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 286172 HAUGLUM D 4H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285915 HAUGLUM D 5H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 286341 HAUN, ELENA ET AL 1 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 172634 HAUSMANN 1 FANNIN, NORTH (3650) MERCY OIL AND GAS, LP 229087 HAUSMANN, ET. AL. 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 203160 HAVEMAN TRUST 01 3H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 288863 HAVEMAN TRUST 01 4H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289824 HAVEMAN TRUST 01 5H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289842 HAVEMAN TRUST 01 5HR SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289836 HAVEMAN TRUST 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268234 HAVEMAN TRUST 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271495 HAVEMAN 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 259859 HAVEMAN 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269680 HAVEMAN 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280386 HAVEMAN 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280552 HAVEMAN 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280393 HAVEMAN 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280507 HAWES, EMILY P. 2D HAWES (BASAL MIOCENE) MATAGORDA RESOURCES CO., INC. 117363 HAWKINS A 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 226762 HAWKINS DEEP GAS UNIT 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 201842 HAWKINS DEEP GU 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 218321 HAWKINS DEEP GU 3 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 231503 HAWKINS SHALLOW G. U. 1 MARSHALL, S.W. (MIOCENE 2350) REMORA OPERATING, LLC 200546 HAWKINS SHALLOW GAS UNIT 2 MARSHALL (FRIO II B) REMORA OPERATING, LLC 202724 HAY 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268708 HAYNES G.U. 1 NURSERY, S. (3625) SOUNDLOGIC PROD. & EXPLOR., LLC 140762 HAYNES, EMMA 1 U EMMA HAYNES (RECKLAW) SIRTEX OIL IND. 001528 HEALEY 1 HEALEY (PETTUS) APEX ENERGY, INC. 195239 HEARD 1 MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 209545 HEARD 1 MEDIO CREEK (4300) PALEO OIL COMPANY LLC 234182 HEARD 1 WEESATCHE, SOUTH ( YEGUA 5000) BRITANCO, L.L.C. 114897


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HEARD 2 REFUGIO-FOX (6300) G. & M. ENERGY COMPANY 086341 HEARD 2 REFUGIO HEARD (6200) ACOCK/ANAQUA OPERATING CO., LP 229847 HEARD UNIT 2 MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 214303 HEARD UNIT 3R MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 220593 HEARD-TEX 2 GRETA (O-1) GRETA OPERATING COMPANY LLC 175379 HEARD, A. W. J. 2 REFUGIO HEARD (5600) CLR GAUGING CORP. 063576 HEARD, C. E. -B- 8 HEARD RANCH (4000) SUE-ANN OPERATING, L.C. 034895 HEARD, C. E. 'B' 30 HEARD RANCH (3890) SUE-ANN OPERATING, L.C. 282439 HEARD, C. E. 'B' 35 HEARD RANCH (4050) SUE-ANN OPERATING, L.C. 266677 HEARD, C. E. 'B' 36 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 269857 HEARD, C. E. 'B' 41 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 269853 HEARD, C. E. 'B' 48 HEARD RANCH (3875) SUE-ANN OPERATING, L.C. 283148 HEARD, C. E. 'B' 49 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 284740 HEARD, C. E. 'B' (3650) 6 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 151101 HEARD, C. E. "B" 1 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 236033 HEARD, C. E. "B" 3 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 139800 HEARD, C. E. "B" 8 U HEARD RANCH (3900) SUE-ANN OPERATING, L.C. 034755 HEARD, C. E. "B" 11 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 124470 HEARD, C. E. "B" 16 HEARD RANCH (3900) SUE-ANN OPERATING, L.C. 118604 HEARD, C. E. "B" 17 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 212412 HEARD, C. E. "B" 18 HEARD RANCH (2900) SUE-ANN OPERATING, L.C. 205538 HEARD, C. E. "B" 19 HEARD RANCH (2900) SUE-ANN OPERATING, L.C. 237019 HEARD, C. E. "B" 21 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 215104 HEARD, C. E. "B" 23 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 223044 HEARD, C. E. "B" 24 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 270511 HEARD, C. E. "B" 25 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 270512 HEARD, C. E. "B" 25 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 225492 HEARD, C. E. "B" 26 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 223043 HEARD, C. E. "B" 30 HEARD RANCH (4300) SUE-ANN OPERATING, L.C. 230419 HEARD, C. E. "B" 31 HEARD RANCH (4600) SUE-ANN OPERATING, L.C. 230422 HEARD, C. E. "B" 32 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 269320 HEARD, C. E. "B" 37 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 232897 HEARD, C. E. "B" 38 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 232874 HEARD, C. E. "B" 39 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 235984 HEARD, C. E. "B" 47 HEARD RANCH (3500) SUE-ANN OPERATING, L.C. 242489 HEARD, C.E. -B- 5 HEARD RANCH (4300) SUE-ANN OPERATING, L.C. 124816 HEARD, C.E. 'B' 43 HEARD RANCH (3550) SUE-ANN OPERATING, L.C. 282539 HEARD, C.E. "B" 9 HEARD RANCH (4300) SUE-ANN OPERATING, L.C. 044896 HEARD, C.E. "B" 10 HEARD RANCH (2900) SUE-ANN OPERATING, L.C. 068265 HEARD, C.E. "B" 22 HEARD RANCH (4500) SUE-ANN OPERATING, L.C. 215103 HEARD, C.E. "B" 24 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 247600 HEARD, C.E. "B" 27 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 233420 HEARD, C.E. "B" 43 HEARD RANCH (4400) SUE-ANN OPERATING, L.C. 235987 HEARD, CE 'B' 46 HEARD RANCH (2900) SUE-ANN OPERATING, L.C. 266678 HEARD, CLAUDE E. ET AL 7 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 253969 HEARD, CLAUDE E. ET AL 9 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 147369 HEARD, CLAUDE E. ET AL 10 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 263007 HEARD, CLAUDE E. ET AL 11 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 286598 HEARD, CLAUDE E. ET AL 12 TOM O'CONNOR (4830) HILCORP ENERGY COMPANY 263640 HEARD, CLAUDE E. ET AL 13 TOM O'CONNOR (2830) HILCORP ENERGY COMPANY 232645 HEARD, CLAUDE E. ET AL 17 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 280203


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HEARD, CLAUDE E. ET AL 17 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 263639 HEARD, CLAUDE E., ET AL 28 GRETA (L- 8) HILCORP ENERGY COMPANY 237049 HEARD, CLEMENT 1SG GRETA (L- 5) HILCORP ENERGY COMPANY 052278 HEARD, CLEMENT 3G TOM OCONNOR (3900) HILCORP ENERGY COMPANY 250402 HEARD, CLEMENT 11 TOM OCONNOR (5440) HILCORP ENERGY COMPANY 070302 HEARD, CLEMENT 14D TOM OCONNOR (4200) HILCORP ENERGY COMPANY 167023 HEARD, CLEMENT 15 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 137592 HEARD, CLEMENT 17 GRETA (O-4) HILCORP ENERGY COMPANY 107213 HEARD, CLEMENT 19 TOM OCONNOR (6750) HILCORP ENERGY COMPANY 229716 HEARD, CLEMENT 21 TOM OCONNOR (5425 SAND) HILCORP ENERGY COMPANY 229397 HEARD, CLEMENT 23 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 250772 HEARD, CLEMENT 26 TOM OCONNOR HILCORP ENERGY COMPANY 255716 HEARD, CLEMENT 35 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 257242 HEARD, F. V. W. 22 GRETA (O-4) DORCHESTER OPERATING COMPANY LLC 122957 HEARD, FANNIE V. W. 26 GRETA (C-1) DORCHESTER OPERATING COMPANY LLC 149872 HEARD, FANNIE V. W. 34 GRETA (6050) DORCHESTER OPERATING COMPANY LLC 232769 HEARD, FANNIE V. W. MRS. 4G TOM OCONNOR (3550) HILCORP ENERGY COMPANY 220944 HEARD, FANNIE V. W. MRS. 18 TOM OCONNOR (5500 SAND) HILCORP ENERGY COMPANY 207236 HEARD, FANNIE V. W. MRS. 51 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 236991 HEARD, FANNIE V. W. MRS. 52 TOM OCONNOR HILCORP ENERGY COMPANY 139125 HEARD, FANNIE V. W. MRS. 64 D GRETA (L- 8) HILCORP ENERGY COMPANY 053249 HEARD, FANNIE V. W. MRS. 64J GRETA (L- 7 SOUTH) HILCORP ENERGY COMPANY 178487 HEARD, FANNIE V. W. MRS. 66 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 139252 HEARD, FANNIE V. W. MRS. 67 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 159454 HEARD, FANNIE V. W. MRS. 70 TOM OCONNOR (4050) HILCORP ENERGY COMPANY 069867 HEARD, FANNIE V. W. MRS. 71 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 151873 HEARD, FANNIE V. W. MRS. 90 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 136936 HEARD, FANNIE V. W., MRS. 72 TOM OCONNOR (3550) HILCORP ENERGY COMPANY 219867 HEARD, FANNIE V.W. 24 GRETA (C-5) DORCHESTER OPERATING COMPANY LLC 130665 HEARD, FANNIE V.W. 30 GRETA (C-2) DORCHESTER OPERATING COMPANY LLC 264846 HEARD, FANNIE V.W. MRS. 1 TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 255440 HEARD, FANNIE V.W. MRS. 3 TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 190430 HEARD, FANNIE V.W. MRS. 7G TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 274512 HEARD, FANNIE V.W. MRS. 19 TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 259998 HEARD, FANNIE V.W. MRS. 41 TOM OCONNOR (3250) HILCORP ENERGY COMPANY 281173 HEARD, FANNIE V.W. MRS. 45 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 229839 HEARD, FANNIE V.W. MRS. 50 TOM O'CONNOR(4900) HILCORP ENERGY COMPANY 150604 HEARD, FANNIE V.W. MRS. 51 TOM OCONNOR (3600) HILCORP ENERGY COMPANY 261241 HEARD, FANNIE V.W. MRS. 62 TOM OCONNOR (3900) HILCORP ENERGY COMPANY 004415 HEARD, FANNIE V.W. MRS. 64 F TOM OCONNOR (3900) HILCORP ENERGY COMPANY 004416 HEARD, FANNIE V.W. MRS. 69 TOM OCONNOR (3900) HILCORP ENERGY COMPANY 217522 HEARD, FANNIE V.W. MRS. 85 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 220895 HEARD, FANNIE V.W. MRS. 88 TOM O'CONNOR (2830) HILCORP ENERGY COMPANY 250229 HEARD, FANNIE V.W. MRS. 93 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 234347 HEARD, FANNIE V.W. MRS. 95 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 221832 HEARD, FANNIE V.W. MRS. 102 TOM OCONNOR HILCORP ENERGY COMPANY 151521 HEARD, FANNIE V.W. MRS. 106 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 247655 HEARD, FANNIE V.W. MRS. 116 TOM O'CONNOR (3100) HILCORP ENERGY COMPANY 282168 HEARD, FANNIE, V. W. MRS. 79 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 237037 HEARD, GEORGIA 3 HEARD RANCH (3700) SANTA ROSA OPERATING, LLC 001984 HEARD, GEORGIA MRS. 10 HEARD RANCH (4300) PALEO OIL COMPANY LLC 052678


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HEARD, IRA -A- 2 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 155871 HEARD, IRA "A" 13 GRETA (L- 8) HILCORP ENERGY COMPANY 226072 HEARD, J. F. B. 3 GRETA, NORTH (6100) GRETA OPERATING COMPANY LLC 218347 HEARD, J. F. B. 5 A GRETA (C-5) GRETA OPERATING COMPANY LLC 146737 HEARD, J. F. B. 8 GRETA (C-1-A, NORTH) DORCHESTER OPERATING COMPANY LLC 271573 HEARD, J. F. B. 17 GRETA (C-1) GRETA OPERATING COMPANY LLC 145449 HEARD, J. F. B. 19 GRETA (O-4) DORCHESTER OPERATING COMPANY LLC 116282 HEARD, J. F. B. 21 T GRETA (F-2 WEST) DORCHESTER OPERATING COMPANY LLC 001927 HEARD, J. F. B. - TEX 9 GRETA (L-13) GRETA OPERATING COMPANY LLC 176706 HEARD, J.F.B. 9 GRETA (O-4) DORCHESTER OPERATING COMPANY LLC 127386 HEARD, J.F.B. 16 GRETA (O-4) DORCHESTER OPERATING COMPANY LLC 146698 HEARD, J.F.B. 25 GRETA (C-5) DORCHESTER OPERATING COMPANY LLC 128689 HEARD, J.F.B. 27 GRETA (O-4) DORCHESTER OPERATING COMPANY LLC 127391 HEARD, MRS. FANNIE V. M. 89 GRETA (O-2 SOUTH) HILCORP ENERGY COMPANY 192702 HEARD, MRS. FANNIE V. W. 3 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 174395 HEARD, MRS. FANNIE V. W. 81 TOM OCONNOR (3250) HILCORP ENERGY COMPANY 195722 HEARD, V. E. 6 SARCO CREEK, W. (FRIO 4600) CHARRO OPERATING, L.L.C. 121479 HEARD,C.E "B" 33 HEARD RANCH (3650) SUE-ANN OPERATING, L.C. 230423 HEIMER, LOIS 1 MOULTON (JACKSON) SOUTHERN OIL & GAS CO, LTD. 075224 HEINRICH HEIRS 1 WEESATCHE, NE. (HOLT FB A) TRI-UNION DEVELOPMENT CORP. 187703 HEINRICH, HENRY 2 HORADAM (2200 MIOCENE) JMM ENERGY LLC 157644 HELDENFELS 1 WILDCAT WELDER EXPLORATION & PROD., INC. 283374 HELM - ARBURN UNIT 2 GARDEN (MIDDLE WILCOX) VISION OIL AND GAS LLC 219859 HELM-ARBURN UNIT 3 CAUSEY (11,100) VISION OIL AND GAS LLC 245473 HELM-ARBURN UNIT 3 GARDEN (MIDDLE WILCOX) VISION OIL AND GAS LLC 257877 HELWEG, ALVIN 1 PRIDHAM LAKE (OAKVILLE) JAD OIL, INC. 140331 HEMBY UNIT 'A' 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285934 HEMBY UNIT 'A' 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285935 HEMBY UNIT 'A' 3H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285939 HEMBY UNIT 'A' 4H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285940 HEMBY UNIT 'A' 5H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285941 HEMBY UNIT 'A' 6H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285942 HEMBY UNIT B 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285949 HEMBY UNIT B 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288628 HEMBY UNIT B 501H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288925 HEMBY UNIT B AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280681 HEMBY UNIT B AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280682 HEMBY UNIT B AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279745 HENDERSON 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285950 HENDERSON 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285951 HENDERSON 4H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285952 HENDERSON 5H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285953 HENDERSON 6H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285954 HENDERSON 7H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285995 HENDERSON 8H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285996 HENDERSON 9H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285998 HENDERSON 10H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285999 HENDERSON 13 PLACEDO (4700) ALLEGIANT RESOURCES, LLC 175905 HENDERSON ET AL GAS UNIT 2 THE RAPTURE (MAGNOLIA) HOME PETROLEUM CORP. 208259 HENDERSON ET AL GAS UNIT 3 THE RAPTURE (MAGNOLIA) HOME PETROLEUM CORP. 212164 HENDERSON, ET AL GAS UNIT 2 THE RAPTURE (DELTA) HOME PETROLEUM CORP. 204737


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HENKE 1 HALLETTSVILLE, SOUTH (WX. 6900) TRIO CONSULTING & MANAGEMENT,LLC 269111 HENKE, E. 1 ENKE (MIOCENE 2100) NELSON, JAMES L. 083153 HENKES, A. G. GAS UNIT 1 HALLETTSVILLE, SOUTH (ANDERSON) CAPITAL STAR OIL & GAS, INC. 074489 HENLEY GU 1 HOPE (14,000) KALER ENERGY CORP. 198764 HENLEY GU 2 WILDCAT KALER ENERGY CORP. 205462 HENLEY GU 2 HOPE (14,000) KALER ENERGY CORP. 202541 HENLEY GU 4 HOPE (14,000) KALER ENERGY CORP. 205695 HENLEY GU 6 HOPE (WILCOX MASSIVE) KALER ENERGY CORP. 290658 HENLEY GU 7 BRUSHY CREEK (WILCOX -S-1-11200) KALER ENERGY CORP. 257080 HENNEKE-WASKOW GAS UNIT 1 KAWITT (SECOND ROEDER) REPSOL OIL & GAS USA, LLC 217626 HENNEKE-WASKOW GAS UNIT 2 SPEARY (ROEDER 9100) REPSOL OIL & GAS USA, LLC 220851 HENNIG 1 GAFFNEY, SW. (4900) CHARRO OPERATING, L.L.C. 263354 HENRY BUES GAS UNIT 3 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 142065 HENRY BUES GAS UNIT 6 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 147266 HENRY BUES GAS UNIT 7 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 149882 HENRY BUES GAS UNIT 8 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 187329 HENRY BUES GAS UNIT 9 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 190050 HENRY BUES GAS UNIT 10 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 205879 HENRY BUES GAS UNIT 11 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 208366 HENRY BUES GAS UNIT 12 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 218206 HENRY BUES GAS UNIT 13 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 221523 HENRY BUES GAS UNIT 15 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 227338 HENSON GAS UNIT 1H YOAKUM (EDWARDS) ATLAS OPERATING LLC 176160 HENSON GAS UNIT 2H YOAKUM (EDWARDS) ATLAS OPERATING LLC 179325 HENSON GAS UNIT 3H YOAKUM (EDWARDS) ATLAS OPERATING LLC 244340 HENZE, MARY 1 HENZE (SLICK) ELLIOTT OIL & GAS OPERATING CO. 002068 HERLIN, JEAN T. 1 FRANCITAS (MIOCENE B) PITCHFORK OIL & GAS, INC. 152751 HERLIN, JEAN T. 6 CARANCAHUA CREEK, E (MIOCENE B) PITCHFORK OIL & GAS, INC. 074391 HERMES UNIT 1 HALLETTSVILLE, E.(MIDDLE WILCOX) MASCOT OIL COMPANY 266493 HERREJON 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268777 HERREJON 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274637 HERREJON 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274638 HERREJON 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273700 HERRING "A" 1 CLAYTON (LULING) TETON PETROLEUM CORPORATION 155090 HERRING RANCH 4 CLAYTON (QUEEN CITY UPPER) AMPAK OIL COMPANY 217983 HERRING RANCH 5502 CLAYTON (QUEEN CITY) AMPAK OIL COMPANY 131543 HERRING RANCH 6402 CLAYTON (WILCOX 7370-HERRING SD) MOORINGSPORT ENERGY PROD. CO. 132993 HERRING RANCH -A- 5501 CLAYTON (QUEEN CITY) SURE FLOW OIL & GAS, INC. 120218 HERRING RANCH BLOCK 55 4 CLAYTON (WILCOX 7370-HERRING SD) MOORINGSPORT ENERGY PROD. CO. 135709 HERRING RANCH 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269501 HERRING RANCH 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268661 HERRING RANCH 03 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268770 HERRING RANCH 04 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268945 HERRING RANCH 67 2 MAXINE, EAST (MATULA) SM OPERATING COMPANY LLC 235608 HERRING RANCH 67 2 MAXINE, EAST (8700) SM OPERATING COMPANY LLC 156866 HERRING RANCH 67 2 MAXINE, EAST (9700) SM OPERATING COMPANY LLC 178915 HERRING RANCH 67-1 1 MAXINE, EAST (8700) SM OPERATING COMPANY LLC 102317 HERSCHEL FULBRIGHT GAS UNIT 2 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 233762 HERSCHEL FULBRIGHT GU 1 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 221418 HERSCHEL FULBRIGHT 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267963 HERSCHEL FULBRIGHT 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271812


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HESTER, CARL T. 1 HEINZEVILLE (RECKLAW) RAMTEX ENERGY LLC 107201 HESTER, CARL T. 2 HEINZEVILLE (RECKLAW) RAMTEX ENERGY LLC 207664 HEWITT 2 TELFERNER (2200) FIELD PETROLEUM CORP. 194689 HEWITT 6 TELFERNER, NORTH (2500) FIELD PETROLEUM CORP. 255196 HEWITT "A" 8 TELFERNER (2200) FIELD PETROLEUM CORP. 203207 HEWITT "B" 9 TELFERNER, EAST (4400) FIELD PETROLEUM CORP. 203660 HEYSER EST. 1 CANDACE (2070) VEGA EXPLORATION, INC. 210000 HEYSER EST. 2 CANDACE (2070) VEGA EXPLORATION, INC. 237014 HICKS 1 TORO GRANDE, N.E. (9300 SD.) FIELD PETROLEUM CORP. 251107 HILBRICH 1 MCCASKILL (WILCOX L-3) TIDEWATER MINERALS CORPORATION 181499 HILBRICH 2 MCCASKILL (LOWER WILCOX) TIDEWATER MINERALS CORPORATION 191553 HILBRICH 3 MCCASKILL (LOWER WILCOX) TIDEWATER MINERALS CORPORATION 192597 HILBRICH 4 MCCASKILL (LOWER WILCOX) TIDEWATER MINERALS CORPORATION 194654 HILBRICH-SELLER 3 L MCCASKILL (WILCOX SLICK 7400) MARWELL PETROLEUM LTD PARTNRSHIP 092726 HILBRICH-SELLERS 3 U MCCASKILL (REKLAW 2ND) MARWELL PETROLEUM LTD PARTNRSHIP 075358 HILBRICH-SELLERS -B- 2 BIRDIE (7100 CARRIZZO) MARWELL PETROLEUM LTD PARTNRSHIP 119960 HILDA DAGG 1 DRY HOLLOW (WILCOX MASSIVE) MERIT ENERGY COMPANY 276677 HILDA DAGG 1 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 278676 HILDA DAGG GAS UNIT 2 1 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 277337 HILL - ROSE GAS UNIT 1 CAESAR, SOUTH (9600) FLETCHER OPERATING, LLC 198739 HILL-ROSE GAS UNIT 2 C COSDEN, WEST (WILCOX 9500) FLETCHER OPERATING, LLC 216255 HILL-ROSE GAS UNIT 2 T CAESAR, SOUTH (9600) FLETCHER OPERATING, LLC 219744 HILLYER, MAUDE K. 2 GABRYSCH (6290) BEARD OIL COMPANY, LLC 258175 HILMER KOOPMANN A 274 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 259552 HILMER KOOPMANN A 274 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 278316 HILMER KOOPMANN A 274 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 280713 HILMER KOOPMANN A 274 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 280714 HILMER KOOPMANN A 274 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 280750 HILMER KOOPMANN A 274 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 280856 HINES 1 OAKVILLE (MID WILCOX 9200) FAULCONER, VERNON E., INC. 173017 HINES, E. A. 1 TEXAM (WILCOX 7600) SIMS, JIM 141080 HINOJOSA A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266753 HINTON 1 OAKVILLE (WILCOX CONS.) WELDER EXPLORATION & PROD., INC. 244405 HINZE UNIT 1H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 288950 HINZE UNIT 2H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287773 HINZE UNIT 3H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287806 HINZE UNIT 4H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 289111 HK RANCH 2 KEERAN, EAST (5470) DAYLIGHT PETROLEUM LLC 208191 HLAVINKA UNIT 4R ARROYO ROJO (BALLARD) EXPRESS OIL CO. 183219 HLAVINKA, RUBY M. 2 ARROYO ROJO (FRIO 6000) EXPRESS OIL CO. 176191 HLAVINKA, RUBY M. 3 ARROYO ROJO (BALLARD) EXPRESS OIL CO. 141844 HOBBS 1 GATA (WILCOX 11,400 LOWER SD.) TEXAS INDEPENDENT EXPLOR LTD. 262027 HOBBS, B. J. 1 L SPEAKS, N. (3185 SD) CIMARRON ENGINEERING, LLC 074564 HOBBS, B. J. 1 U SPEAKS N. (FRIO UPPER) CIMARRON ENGINEERING, LLC 074573 HOBBS, B. J. 6 PROVIDENT CITY (YEGUA) CIMARRON ENGINEERING, LLC 250628 HOBBS, BILLY JOE 2 SPEAKS ( 1800) CIMARRON ENGINEERING, LLC 200549 HODGE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267978 HOERMANN UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 270400 HOERMANN UNIT 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276210 HOERMANN UNIT 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 285842 HOERMANN UNIT 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 286378


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HOFF 1 MISSION VALLEY, W.(WILCOX 10600) TRANSPACIFIC ENERGY, LLC 228641 HOFF 7 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 220803 HOFF B 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 220639 HOFF B 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 216246 HOFF-CALHOUN 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 223530 HOFF, GEORGIA ET AL 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 195043 HOFF, LOUIS 7 MAETZE (3300) UNOCO 002879 HOFFER 1 WILDCAT MASCOT OIL COMPANY 267067 HOFFER 1 TIGER BEND (FRIO 1350) LAVACA RIVER OPERATING CO., LLC 254175 HOFFER 2 TIGER BEND (FRIO 1350) XTO ENERGY INC. 193478 HOFFER, LEO GAS UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 102241 HOFFER, LEO GAS UNIT 2 HALLETTSVILLE, E.(MIDDLE WILCOX) CAPITAL STAR OIL & GAS, INC. 284691 HOFFER, LEO GAS UNIT 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167063 HOFFMAN RANCH 1 MARSHALL (MIDDLE WILCOX) PALEO OIL COMPANY LLC 187607 HOLCHAK, STEPHEN J. III ET AL 1 BOYCE (WILCOX A) RAVEN FOREST OPERATING, LLC 091835 HOLLINGSWORTH, L. R. -B- 5 MORALES (FRIO E) ASSOCIATED MINERALS INTEREST 121874 HOLLMAN UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 261242 HOLLMAN UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284943 HOLLMAN UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284945 HOLLMAN UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284946 HOLLMAN UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279880 HOLLMAN UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278844 HOLLMAN UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278985 HOLLMAN UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284156 HOLLMAN UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284273 HOLLMAN UNIT 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284159 HOLLMAN UNIT 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289275 HOLLMAN UNIT 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289273 HOLLMAN UNIT 13H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289274 HOLLMAN UNIT 15H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280524 HOLLMAN UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280517 HOLLMAN UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 285018 HOLLMAN UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280060 HOLLMAN UNIT AC 5H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280062 HOLLMAN UNIT AC 10H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 281233 HOLLMAN UNIT AC 11H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280474 HOLLMAN UNIT AC 12H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 281443 HOLLMAN UNIT AC 14H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280520 HOLT, A. G. 1 HOCKLEY (4720) WELDER EXPLORATION & PROD., INC. 108202 HOLZHEAUSER "A" 1 EL TORO BUENO (AY-3) FAULCONER, VERNON E., INC. 232704 HOLZMARK 1 HOLZMARK (LULING) TRIDENT CORPORATION 155733 HOLZMARK 1-R HOLZMARK, E. (SLICK) TRIDENT CORPORATION 231492 HOLZMARK 4 HOLZMARK (PETTUS) TRIDENT CORPORATION 195114 HOMEYER 1 KENEDY, CENTRAL (EDWARDS) ENSIGN OPERATING LLC 135068 HOOKS GAS UNIT 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270007 HOOKS NO. 2 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268559 HOOKS NO. 2 208 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284240 HOOKS NO. 2 209 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284241 HOOKS NO. 2 211 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284279 HOOKS NO. 2 212 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284277 HOOKS NO. 2 213 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284278


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HOOKS NO. 4 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266867 HOOKS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266272 HOOKS 3 UNIT 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268561 HOOKS 4-HARDESTY A USW A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289422 HOOKS 4-HARDESTY A USW B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289188 HOOKS 4-HARDESTY A USW C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289206 HOOKS 4-HARDESTY A USW D 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289337 HOPE SCHORLEMER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267697 HOPE SCHORLEMER 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272472 HOPE SCHORLEMER 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272499 HOPE SCHORLEMER 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272500 HOPE SCHORLEMER 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272501 HOPE SCHORLEMER 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272502 HOPE SCHORLEMER 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272503 HOPE SCHORLEMER 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272504 HOPE SCHORLEMER 01 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272505 HOPE SCHORLEMER 01 10H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277187 HOPE SCHORLEMER 01 11H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277238 HOPE SCHORLEMER 01 12H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277193 HOPE 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 258428 HOPE 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268665 HOPE 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268707 HOPE 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268951 HOPE 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280801 HOPE 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277495 HOPE 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 278593 HORADAM BROS. 1 HORADAM (2200 MIOCENE) HENRY HORADAM FAMILY LP 163792 HORSE THIEF HOLLOW GAS UNIT 1 YANTA (WILCOX LOWER) RAMTEX ENERGY LLC 202572 HORSE THIEF 438 1 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 258652 HOUDMANN 1 LIMES, S. (WILCOX 10750) MARWELL PETROLEUM LTD PARTNRSHIP 115247 HOUDMANN-BUXKAMPER GAS UNIT 2 MAXINE, EAST (8400) BAY ROCK OPERATING COMPANY 183193 HOUDMANN-BUXKAMPER GAS UNIT 3 MAXINE, EAST (8400) BAY ROCK OPERATING COMPANY 225521 HOUSE MOTHERLODE UNIT 1 1H SUGARKANE (EAGLE FORD) BPX OPERATING COMPANY 268791 HOUSE 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269406 HOWARD, V. B. 1 OAKVILLE (MID WILCOX 9200) FAULCONER, VERNON E., INC. 169750 HOYT GENTRY GAS UNIT 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 217776 HRP 4 THIGPEN (CATAHOULA) RBC ENERGY SERVICES, LLC 270981 HUBER 1 COLETTO CREEK, S. (CATAHOULA) KLOTZMAN, M. S. EXPLORATION CO. 124449 HUBER UNIT 1 COLETTO CREEK, S. (4820) FOUNDATION OIL COMPANY, INC. 257632 HUDDLESTON, H. UNIT 1 MORRIS DYE (2370) PLAZA OIL & GAS, INC. 123480 HUGHES 2 BEEVILLE, WEST (3540) HEADWATERS ENERGY PARTNERS, LLC 269311 HUGHES GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268542 HULQUIST, M. 8 D GANADO (3700) KD ENERGY, LLC 069400 HULTQUIST, M. 8 J GANADO (V-3) KD ENERGY, LLC 036257 HULTQUIST, M. 9 H GANADO (F- 7-B) KD ENERGY, LLC 091852 HUNTER 1 ALDRETE AND CARBAJAL (WILCOX) WELDER EXPLORATION & PROD., INC. 191961 HYDE 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 260386 HYNES 7 PAPALOTE, E. (4885) MAGNUM PRODUCING, LP 111037 HYNES 8 C PAPALOTE, E. (5400) MAGNUM PRODUCING, LP 112065 HYNES - SPILLER 4 LONG MOTT, SOUTH (FRIO, LOWER) RAWHIDE OPERATING, INC. 161262 HYNES, J. 1 PAPALOTE (5200) SPINDLETOP DRILLING CO. 120908


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HYNES, J. A. 26 PAPALOTE (5200) SPINDLETOP DRILLING CO. 182923 HYNES, J. A. 26 PAPALOTE (5200) SPINDLETOP DRILLING CO. 184129 HYNES, JAMES AGNES 2 MASSINGILL, S. (4590 SD.) SPINDLETOP DRILLING CO. 128350 HYNES, JAMES AGNES 3 MASSINGILL, S. (4590 SD.) SPINDLETOP DRILLING CO. 032945 HYNES, JAMES AGNES 4 MASSINGILL, S. (4600 FB B) SPINDLETOP DRILLING CO. 033039 HYNES, JAMES AGNES 22 MASSINGILL, S. (4625 SD.) SPINDLETOP DRILLING CO. 129347 HYNES, JAMIE -C- 3 REFUGIO HEARD (1600) COX & COX PRODUCTION CO. 068968 HYNES, PHIL A 1 REFUGIO NEW (2000) WALLIS ENERGY, INC. 061074 I. T. TAYLOR, ET. AL. 1 TORO GRANDE (7800 YEGUA) ATLAS OPERATING LLC 238236 IAN GAS UNIT 1 SPEARY (ROEDER 9100) REPSOL OIL & GAS USA, LLC 220694 IBROM A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 268011 IBROM A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281907 IBROM A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281906 IBROM B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 268020 IBROM B 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282946 IDEUS 3 GOTTSCHALT (THIRD YEGUA) ESTATE OF JAMES L. NELSON 182522 IDEUS UNIT 3 SLICK, EAST (2-7600) NELSON, JAMES L. 103293 IDEUS UNIT 3 WEESATCHE, WEST (LULING) ESTATE OF JAMES L. NELSON 161801 IMOGENE HALL UNIT 3 TULETA, WEST (HOCKLEY 3100) BRITANCO, L.L.C. 146765 IMOGENE HALL UNIT 6 TULETA, WEST (HOCKLEY 3100) BRITANCO, L.L.C. 184229 IMOGENE HALL UNIT 10 TULETA, WEST (HOCKLEY 3100) BRITANCO, L.L.C. 188809 INGLE 3 BEEVILLE, W. (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 278795 INGRAM, RUTH 2 SPEARY (MYHAND 8400) REPSOL OIL & GAS USA, LLC 038378 IVAS SMITH 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267259 IVAS SMITH 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276917 IVAS SMITH 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277808 IVAS SMITH 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277769 IVAS SMITH 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267414 J B DUDERSTADT 2 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 235319 J WALLIS UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268792 J. B. DUDERSTADT 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267759 J. C. BYLES UNIT 2 COSDEN, WEST (WILCOX 9500) RINCON PETROLEUM CORPORATION 210314 J. HERMANN C 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281903 J. HERMANN C (AW) 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281902 J. J. O'BRIEN B 8 GRETA (5780) GRETA OPERATING COMPANY LLC 260704 J. M. O'BRIEN 'A' 7 GRETA (L- 3) DEWBRE PETROLEUM CORPORATION 271694 J. MOTT 3 YOAKUM (WILCOX 7300) FOUNDATION ENERGY MANAGEMENT LLC 086434 J. RUHMANN GAS UNIT 1-E 1 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 110780 J. RUHMANN GAS UNIT 1-E 2 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 144512 J. W. JOHNSON GU 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 267970 J. W. MCCLELLAND G. U. #2 1 LIMES (WILCOX 9500) AWP OPERATING COMPANY 148924 J. W. MCCLELLAND G. U. #2 1 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 267641 J. WALLIS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266268 J.C. BYLES UNIT 3 COSDEN, WEST (WILCOX 9500) RINCON PETROLEUM CORPORATION 217810 J.W. MCCLELLAND ET AL UNIT #1 2 LIMES (WILCOX F-1) SANDEL OPERATING COMPANY 149008 J-HERMANN B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266683 J-HERMANN C 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264515 J-HERMANN D 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265750 J-HERMANN E 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267107 JABLONSKI 1 MEYERSVILLE, NORTH (MASSIVE I) B.P. PRODUCTIONS INC. 210238 JABLONSKI UNIT 2 BRANDT (2200) SOCO GAS PROPERTIES 110075


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ JABLONSKI UNIT 3 BRANDT (WILCOX 7500) MIDSTATES CORPORATION 123280 JACKSON 1 PETTUS LEACH (4390) SALT CREEK PRODUCTION, INC. 227390 JACKSON, KATHLEEN 1 AUSTIN (NITA) SIANA OIL & GAS 180466 JACOB 1 MISSION VALLEY, W (WILCOX 10200) WHITE OAK OPERATING COMPANY LLC 178817 JACOB 1 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 172699 JACOB 2 MISSION VALLEY, W (WILCOX 10200) WHITE OAK OPERATING COMPANY LLC 184289 JACOB 3 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 187798 JACOB 5 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 247298 JACOB 6 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 243880 JACOB GAS UNIT 2 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 198574 JACOBS 1 HOPE (MIOCENE 2550) MODERN EXPLORATION, INC. 221482 JACOBS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263746 JACOBS ET AL UNIT 1 ESPERANZA (8800) ZACHRY EXPLORATION, LLC 265012 JACOBS GAS UNIT 1 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 204033 JACOBS RANCH 1 THE RAPTURE (12700 SAND) XTO ENERGY INC. 185660 JACOBS RANCH 5 THE RAPTURE (WILCOX) XTO ENERGY INC. 238225 JACOBS RANCH 7 THE RAPTURE (WILCOX) XTO ENERGY INC. 276118 JACOBS RANCH 7 THE RAPTURE (WILCOX 12400) XTO ENERGY INC. 237709 JACOBS RANCH 12 THE RAPTURE (ROEDER SAND) XTO ENERGY INC. 226377 JACOBS RANCH 12 THE RAPTURE (WILCOX GLADNEY) XTO ENERGY INC. 232258 JACOBS RANCH 12 THE RAPTURE (12700 SAND) XTO ENERGY INC. 214498 JACOBS, CHARLES 1 HELEN GOHLKE, E. (WILCOX A-1) DOUBLE PLAY OIL & GAS, INC 058702 JAMES GANO 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267752 JAMES GANO 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266356 JAMES GANO 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280299 JAMES GANO 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280296 JAMES GANO 01 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280310 JAMES RODEN GAS UNIT 1 LAVACA RIVER (1700) RISE PETROLEUM INVESTMENTS LLC 239422 JAMES STAPLES, JR. 1 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 265533 JANAK 1 WORD, N. (EDWARDS) PROLINE ENERGY RESOURCES INC 224598 JANAK UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 271124 JANAK UNIT 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 273210 JANAK UNIT 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 273528 JANAK UNIT 5H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 272780 JANAK UNIT 7L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288870 JANAK-LOOS 6L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288871 JANK 1 MILBY CREEK (12,900) RAMTEX ENERGY LLC 187502 JANK 1 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 200735 JANK 3 MISSION VALLEY, W.(WILCOX 10600) WHITE OAK OPERATING COMPANY LLC 226227 JANSKY UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268776 JANSKY UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 277274 JANSKY UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266817 JANSSEN 1 WARMSLEY, S. (LOWER MIGURA) FLETCHER OPERATING, LLC 226501 JANSSEN -A- 1 L RUNGE, E. (MIGURA 10850) PROEX ENERGY MANAGEMENT, L.L.C. 062358 JANSSEN -A- 1 U RUNGE, E. (ROEDER, FB-B) PROEX ENERGY MANAGEMENT, L.L.C. 062357 JANSSEN GAS UNIT 1 JANSSEN (9950) SANDEL OPERATING COMPANY 109270 JANSSEN GAS UNIT 2 JANSSEN, E. (9750) SANDEL OPERATING COMPANY 118124 JANSSEN GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266143 JANSSEN GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266144 JANSSEN 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268010 JANSSEN, N. F. 1 A NURSERY, SE. (1100) WARRIOR OIL & GAS CORPORATION 104735


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ JD MINERALS 1 BIRDIE (WILCOX 11,750) NOG PRODUCTION & OPERATING LLC 161130 JERRY HOUSE UNIT A 3H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285922 JERRY HOUSE UNIT A 4H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285924 JERRY HOUSE UNIT A 5H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 286120 JERRY HOUSE UNIT B 1H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 286276 JERRY HOUSE UNIT B 2H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 287218 JERRY HOUSE UNIT B 3H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 286328 JERRY HOUSE UNIT B 4H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 277330 JERRY HOUSE UNIT C 1H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285925 JERRY HOUSE UNIT C 2H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285929 JERRY HOUSE UNIT C 3H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285932 JERRY HOUSE UNIT C 4H EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 285933 JM OBRIEN "A" 9 GRETA (6200, SOUTH) GRETA OPERATING COMPANY LLC 214405 JO ANN MUELLER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268658 JOHN FRIEND WEBRE 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269637 JOHNSON GAS UNIT 1 FLINTSTONE (CRETACEOUS CHALK) ENSIGN OPERATING LLC 224342 JOHNSON GAS UNIT NO.1 2 DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 260237 JOHNSON TRUST 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 260388 JOHNSON-PATINO-TSCHIRHART 8H PSA 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287145 JOHNSON-TSCHIRHART UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268960 JOHNSON, E. L. 1 PALO ALTO, N. (6800) LOW-END OIL LLC 055134 JOHNSON, ELMER 8 LOLITA (MEGATANE) MCGOWAN WORKING PARTNERS, INC. 060124 JOHNSTON 1 TULETA, EAST (LULING) GAITHER PETROLEUM CORPORATION 256366 JOHNSTON GAS UNIT #2 1 PAWNEE (EDWARDS) REPSOL OIL & GAS USA, LLC 259707 JOHNSTON GAS UNIT 1 1 PAWNEE (EDWARDS) REPSOL OIL & GAS USA, LLC 244796 JOHNSTON GAS UNIT 2 2 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 260032 JOHNSTON GAS UNIT 3 1 PAWNEE (EDWARDS) REPSOL OIL & GAS USA, LLC 245337 JONES, F. E. 4 L UNA WEST (6700) OSYKA PERMIAN, LLC 077167 JONES, F. E. 9 UNA WEST (S-SAND) OSYKA PERMIAN, LLC 159796 JORDAN A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264956 JORDAN A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285647 JORDAN A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288568 JORDAN A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288571 JORDAN A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285648 JORDAN A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288820 JORDAN A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288722 JORDAN A- JORDAN B SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288826 JORDAN A- JORDAN B SA 2 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288766 JORDAN A- JORDAN B SA 3 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288767 JORDAN A- JORDAN B SA 4 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288590 JORDAN A- JORDAN B SA 5 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288564 JORDAN A- JORDAN B SA 6 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288786 JORDAN B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265194 JORDAN B 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285739 JORDAN B 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288569 JORDAN B 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288598 JORDAN B 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285632 JORDAN B 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288608 JORDAN B 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288725 JOSHUA 1 COLETTO CREEK, SOUTH (4000) STRATA OPERATING, INC. 280153 JOSHUA 1 COLOGNE (4600) STRATA OPERATING, INC. 284941


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ JOSTES 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 155294 JOSTES 3 TYNAN, EAST (2240) GREAT TEXAS CRUDE INC. 181611 JUDD-TURNER A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 267263 JUDD-TURNER A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282072 JUDD-TURNER A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282073 JULIA MOTT GAS UNIT NO. 1 7 H YOAKUM (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 215069 JULIA MOTT GAS UNIT NO. 1 7H WILDCAT FOUNDATION ENERGY MANAGEMENT LLC 280541 JULIA MOTT GAS UNIT NO. 2A 4H YOAKUM (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 178893 JULIA MOTT GAS UNIT NO. 3 5 YOAKUM (WILCOX 7300) FOUNDATION ENERGY MANAGEMENT LLC 183677 JULIA MOTT GAS UNIT NO. 3 5 YOAKUM (WILCOX 7450) FOUNDATION ENERGY MANAGEMENT LLC 280535 JULIA MOTT GAS UNIT NO.1 8 YOAKUM (EDWARDS) LEWIS PETRO PROPERTIES, INC. 229082 JULIE 3H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 286105 JULIE 3H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 285643 JULIUS TECHNIK 4 HALLETTSVILLE (8750) INLAND OCEAN, INC. 270263 JULIUS TECHNIK (7700) GAS UNIT 1 HALLETTSVILLE (7700) INLAND OCEAN, INC. 118652 JUNKER, EMILIE ET AL UNIT 1 ARNECKEVILLE (YEGUA 5260) ESTATE OF JAMES L. NELSON 121763 JUNKER, EMILIE ET AL UNIT 3 ARNECKEVILLE (YEGUA 5260) ESTATE OF JAMES L. NELSON 078977 JUSTEN, ELIZABETH 1 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 225815 JUSTEN, ELIZABETH 2 POWDER RIVER (CONSOLIDATED) CXL ENERGY LLC 227395 JUSTEN, ELIZABETH 3 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 225663 JUSTEN, ELIZABETH 4 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 226487 JUSTEN, ELIZABETH 5R POWDER RIVER (CONSOLIDATED) CXL ENERGY LLC 094192 K-SISTERS GAS UNIT 1H WARMSLEY, S. (10550) DORADO DRILLING, INC. 253159 KAHANEK, WM. D., ET AL 1 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 138353 KAINER, CHARLES G. 2 PERSON (EDWARDS) WOOD ENERGY INC. 047846 KAISER UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 272179 KAISER UNIT 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 274666 KAISER UNIT 5H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 272596 KALLINA 1H WARMSLEY, S. (10550) FAULCONER, VERNON E., INC. 249119 KALLINA 2H WARMSLEY, S. (10550) FAULCONER, VERNON E., INC. 247729 KALLUS 1 CORDELE, W. (JOANNE) NEW CENTURY EXPLORATION, INC. 288294 KALLUS 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 275698 KALLUS-ROSE 1 JACK STARR (FRIO 5050) WHITING OIL AND GAS CORPORATION 161067 KAREN KENNEDY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266284 KAREN KENNEDY UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272854 KAREN KENNEDY UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271125 KARL 1H YOAKUM (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 179899 KARNEI, ELLROY UNIT 1 LIONS (CORONA CONSOLIDATED) BLUEFIN RESOURCES LLC 209155 KARNEI, ELLROY UNIT 2 LIONS (CORONA CONSOLIDATED) BLUEFIN RESOURCES LLC 212578 KARNEI, ELLROY UNIT 2 LIONS (CORONA, LOWER) BLUEFIN RESOURCES LLC 209157 KARNEI, NORMAN 3 BRANDT (PETTUS-CM CONS.) RAVEN FOREST OPERATING, LLC 289171 KARON LULING UNIT 39 KARON (LULING) FOURTH FLOOR OPERATING LLC 151942 KARON LULING UNIT 40 KARON (LULING) FOURTH FLOOR OPERATING LLC 153674 KARON LULING UNIT 41 KARON (LULING) FOURTH FLOOR OPERATING LLC 156839 KARON UNIT 1 KARON (LULING) FOURTH FLOOR OPERATING LLC 115060 KARON UNIT 3 KARON (LULING) FOURTH FLOOR OPERATING LLC 056522 KARON UNIT 8 KARON (LULING) FOURTH FLOOR OPERATING LLC 056525 KARON UNIT 14 KARON (LULING) FOURTH FLOOR OPERATING LLC 061316 KARON UNIT 18 KARON (LULING) FOURTH FLOOR OPERATING LLC 090483 KARON UNIT 22 KARON (LULING) FOURTH FLOOR OPERATING LLC 107984 KARON UNIT 23 KARON (LULING) FOURTH FLOOR OPERATING LLC 061318


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KARON UNIT 25 KARON (LULING) FOURTH FLOOR OPERATING LLC 056530 KARON UNIT 27 KARON (LULING) FOURTH FLOOR OPERATING LLC 090484 KARON UNIT 28 KARON (LULING) FOURTH FLOOR OPERATING LLC 090485 KARON UNIT 29 KARON (LULING) FOURTH FLOOR OPERATING LLC 056531 KARON UNIT 31 KARON (LULING) FOURTH FLOOR OPERATING LLC 061319 KARON UNIT 32 KARON (LULING) FOURTH FLOOR OPERATING LLC 093975 KARON UNIT 36 KARON (LULING) FOURTH FLOOR OPERATING LLC 083210 KARON UNIT 37 KARON (LULING) FOURTH FLOOR OPERATING LLC 061321 KARON UNIT 38 KARON (LULING) FOURTH FLOOR OPERATING LLC 087564 KARON-SLICK UNIT 1 KARON (SLICK) FOURTH FLOOR OPERATING LLC 002316 KATHLEEN JACKSON UNIT 2 AUSTIN (WILCOX 12,300) SIANA OIL & GAS 223785 KATHLEEN JACKSON UNIT 3 AUSTIN (WILCOX 12,300) SIANA OIL & GAS 242118 KATHLEEN JACKSON UNIT 4 AUSTIN (WILCOX 12,300) SIANA OIL & GAS 229869 KATZFEY 2 ALIMAR (HOCKLEY "C") MCGOWAN WORKING PARTNERS, INC. 160524 KAUP UNIT 1 LARGO NAVIDAD (6560) ZACHRY EXPLORATION, LLC 240638 KAY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276921 KEACH GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 257602 KEACH GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 267121 KEACH GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 274140 KEACH GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 273114 KEACH GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276930 KEACH GAS UNIT 1 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277031 KEACH GAS UNIT 1 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277033 KEACH GAS UNIT 1 C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277194 KEAHEY-MEYER 1 T GOTTSCHALT (RECKLAW 7300) NELSON, JAMES L. 113841 KEATING GAS UNIT 1 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 233341 KEERAN 4 KOONTZ (4700) DAYLIGHT PETROLEUM LLC 215229 KEERAN 5 KOONTZ (5500) DAYLIGHT PETROLEUM LLC 130287 KEERAN 14 KOONTZ (4680) DAYLIGHT PETROLEUM LLC 269778 KEERAN 19 KOONTZ (4750) DAYLIGHT PETROLEUM LLC 275804 KEERAN "A" 32 KEERAN (3900) FRIO RESOURCES, LLC 188983 KEERAN "A" 33 KEERAN, NORTH (4000 MIOCENE) FRIO RESOURCES, LLC 134146 KEERAN "A" 37 KEERAN (3900) FRIO RESOURCES, LLC 180667 KEERAN "A" 38-C KOONTZ (3200) FRIO RESOURCES, LLC 142516 KEERAN "A" 38-T KEERAN (5500) FRIO RESOURCES, LLC 142519 KEERAN ESTATE 7 KOONTZ (4680) DAYLIGHT PETROLEUM LLC 121871 KEERAN ESTATE 12 KEERAN (5200) DAYLIGHT PETROLEUM LLC 280180 KEERAN RANCH 1 H. C. KOONTZ (5460) GBS OIL & GAS, LLC 133303 KEERAN RANCH 2 U KEERAN (5830) BULL OIL COMPANY, LLC 167015 KEERAN RANCH 9 KEERAN (5500) REMORA MANAGEMENT, LLC 168115 KEERAN RANCH 14 KEERAN REMORA MANAGEMENT, LLC 170693 KEERAN RANCH 20 KEERAN (6400) REMORA MANAGEMENT, LLC 190719 KEERAN RANCH 21 KEERAN (6200) REMORA MANAGEMENT, LLC 204461 KEERAN RANCH C 2 KEERAN, SOUTHEAST (3350) GBS OIL & GAS, LLC 206934 KEERAN, UNION 10 KEERAN (6400) REMORA MANAGEMENT, LLC 161803 KELLAM 2H SUGARKANE (EAGLE FORD) PROLINE ENERGY RESOURCES INC 261774 KELLER 1 CANNAN, E. (10300 WILCOX) VISION OIL AND GAS LLC 217085 KELLERS BAY STATE GAS UNIT 19 F MAG. BEACH-KELLERS BAY (FOESTER) CHESAPEAKE OPERATING, L.L.C. 047888 KELLEY GAS UNIT 3 SPEAKS, S. (LOWER WILCOX) MERIT ENERGY COMPANY 193142 KELLEY GAS UNIT 4 SPEAKS, S. (LOWER WILCOX) MERIT ENERGY COMPANY 195741 KELLEY GAS UNIT 5 SPEAKS, S. (LOWER WILCOX) MERIT ENERGY COMPANY 226380


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KELLEY, MYRA 1 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 230259 KELLY GAS UNIT 1 THEIS, SOUTH(SLICK FIRST) WELDER EXPLORATION & PROD., INC. 225891 KELLY UNIT 4 EBEN HABEN (2500) PREMIER MINERALS, INC. 178230 KENEDY CORPORATION GAS UNIT 1 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 274452 KENEDY CORPORATION GAS UNIT 1(A) B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 275060 KENNEDY 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259784 KENNEDY 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 244929 KENNEDY 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 275592 KENNEDY 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 275593 KENNEDY 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 275688 KENNEDY 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270339 KENNEDY 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276630 KENNEDY 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269375 KENNEDY 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276670 KENNEDY 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279729 KENNEDY 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284983 KENNEDY 13H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281497 KENNEDY 14H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283131 KENNEDY 15H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283133 KENNEDY 16H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283160 KENNEDY 319H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280400 KENNEDY 320H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279836 KENNEDY 512H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281498 KENNEDY 513H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281725 KENNEDY 514H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281415 KENNEDY 519H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279837 KENNEDY-OLSON ESSE 2H PSA 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286293 KENNEDY-OLSON ESSE 3H PSA 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286316 KENNEDY-OLSON ESSE 6H PSA 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286508 KENNEDY-OLSON ESSE 7H PSA 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286294 KENNEDY-OLSON ESSE 8H PSA 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286576 KENRUBYLIE A 8H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 276401 KENRUBYLIE A 8H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276117 KENRUBYLIE A 9H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276399 KENRUBYLIE A 10H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276646 KENRUBYLIE A 11H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276647 KENTUCKY-FAGAN 7 FAGAN (MATT 2150) ANDERSON OIL LTD. 163811 KERLICK 1 HENZE (WILCOX 9700) LONE OAK ENERGY INC 149700 KEY, J. T. 2 SHERIFF (F-3) FORMATION RESOURCES LLC 152530 KICKENDAHL UNIT 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 256985 KICKENDAHL UNIT 1 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282076 KICKENDAHL UNIT 1 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282079 KICKENDAHL UNIT 1 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282083 KICKENDAHL UNIT 1 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282084 KILROY-TIPTON 1 ORD (WILCOX J-1 SAND) MAGNUM PRODUCING, LP 132690 KINGERY, F. G. 1 HARRIS (WILCOX-12050) HURD ENTERPRISES, LTD. 105343 KIRCHER 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 157870 KIRK 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 260295 KIRK 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268006 KIRKWOOD 1 SALEM (3750) BEACH OIL & GAS, INC. 177989 KLEINE 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267704


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KLEINE 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 269532 KLEINE 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280770 KLEINE 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280626 KLEINE 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280624 KLEINE 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280648 KLEINE 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280649 KLEINE 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280653 KLIMITCHEK 1 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 223532 KLIMITCHEK 1R SPEAKS, SE. (1800) FIRSTRIKE ENERGY CORPORATION 288833 KLIMITCHEK 2 RYAN (WILCOX 10,600) MERIT ENERGY COMPANY 223289 KLIMITCHEK 4 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 240435 KLIMITCHEK 4 RYAN (WILCOX 10,600) MERIT ENERGY COMPANY 238777 KLIMITCHEK G.U. 1 3 RENGER (WILCOX 10300) MERIT ENERGY COMPANY 278668 KLIMITCHEK-HOBBS UNIT 1 LAVACA RIVER (2100) SOUNDLOGIC PROD. & EXPLOR., LLC 216203 KLIMITCHEK, CARL 2 SPEAKS ( 1800) MOOSE OPERATING CO., INC. 222029 KLIMITCHEK, FRANKLIN GAS UNIT 1 SPEAKS (1900 W) MOOSE OPERATING CO., INC. 222024 KLINGEMAN, FRED 1 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 073528 KLINGMAN, FRED 1 ATKINSON (4250) KEBO OIL & GAS, INC. 054385 KLM 1 RENGER (WILCOX 12600) GEOSOUTHERN OPERATING II, LLC 278880 KLOESEL UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 285748 KNANDEL GAS UNIT 1 WARMSLEY, S. (10550) FLETCHER OPERATING, LLC 221679 KNANDEL GAS UNIT 2 WARMSLEY, S. (10550) FLETCHER OPERATING, LLC 221807 KNANDEL GAS UNIT 3H WARMSLEY, S. (10550) FLETCHER OPERATING, LLC 229699 KNAPE 1 VIENNA (FRIO 2520) REPUBLIC RESOURCES, LLC. 194873 KNEBEL 1 VIENNA (FRIO 2950) MOOSE OPERATING CO., INC. 168352 KNIGHT 1 PROVIDENT CITY (4000, EAST) CAMOIL, INC. 154194 KNIGHT #1 1 CANNAN, SOUTH (2300) BRAZOS PRODUCTION SERVICES, INC. 188934 KNIGHT ET AL 1 WILDCAT NORTH SHORE ENERGY, L.L.C. 179408 KNIGHT RANCH 1 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 221776 KNIGHT RANCH 2 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 226046 KNIGHT RANCH 3 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 229624 KNIGHT RANCH 4 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 246677 KNIGHT RANCH 6 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 240762 KNIGHT RANCH 7 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 244756 KNIGHT-TURNBOW GAS UNIT 1 RUDMAN (CANNAN SD. 9720) VISION OIL AND GAS LLC 231133 KNIPLING GAS UNIT 1 SHERIFF, EAST (8348 FRIO) XOG OPERATING LLC 148749 KNIPLING GAS UNIT 1 SHERIFF, E. (8400 FRIO STRINGER) XOG OPERATING LLC 177933 KNIPLING GAS UNIT 2 SHERIFF, EAST (8000) XOG OPERATING LLC 225508 KNIPLING GAS UNIT 3 SHERIFF, EAST (8250) XOG OPERATING LLC 169934 KNIPLING GAS UNIT 3 SHERIFF, EAST (8340) XOG OPERATING LLC 174353 KNIPLING GAS UNIT 3 SHERIFF, EAST (8530) XOG OPERATING LLC 105152 KNOX MILLER 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 265495 KOCUREK GAS UNIT 1 1 PAWNEE (EDWARDS) REPSOL OIL & GAS USA, LLC 247187 KOEMEL 2 GAMBLE GULLY (LULING) DIRKS PETROLEUM COMPANY 221538 KOENIG UNIT "B" 1 KOENIG, NORTH (10,800) KLOTZMAN, M. S. EXPLORATION CO. 173789 KOENIG, EDWARD F 1 CUERO, S (BLK. 111 10,000) BOYD & MCWILLIAMS ENERGY GROUP 107713 KOERNER UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270442 KOERNER UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276631 KOERNER UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272134 KOERNER UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272094 KOHUTEK 1 NURSERY (3400) GARRISON LTD. 244927


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KOHUTEK "B" 2 NURSERY (3400) GARRISON LTD. 257204 KOLAR, E. E. 1 VIENNA (WILCOX, MIDDLE U) OVERTON PARK OIL & GAS LP 004605 KOLAR, ED 5 VIENNA (WILCOX, MIDDLE U) OVERTON PARK OIL & GAS LP 129394 KOLAR, ED 6 VIENNA (WILCOX, MIDDLE U) OVERTON PARK OIL & GAS LP 139118 KOLAR, ED 7 VIENNA (WILCOX, MIDDLE U) OVERTON PARK OIL & GAS LP 143866 KOLAR, ED 8 VIENNA (WILCOX, MIDDLE U) OVERTON PARK OIL & GAS LP 148410 KOLAR, ED 9 VIENNA (WILCOX, MIDDLE U) OVERTON PARK OIL & GAS LP 145603 KOLAR, ED 10 VIENNA (8400) OVERTON PARK OIL & GAS LP 147706 KOLAR, ED 14 VIENNA (WILCOX, MIDDLE U) OVERTON PARK OIL & GAS LP 147341 KOLIBA 1 MCFADDIN, NORTH (5000) STACY, A. D. INC. 140432 KOLO-NELLER-RHODES TRUST B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280934 KOLO-NELLER-RHODES TRUST B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280935 KOLO-NELLER-RHODES TRUST B 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280936 KOLO-NELLER-RHODES TRUST (SA) B3 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284344 KOLO-NELLER_RHODES TRUST (SA) B2 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284426 KOLODZIEJZCYK UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 265406 KOLODZIEJZCYK UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270217 KONRAD 1 SALEM (3180) INNOVATIVE ENERGY SERVICES, INC. 209668 KOONTZ -C- 2 SARCO CREEK, WEST (4300) WAGNER OIL COMPANY 126684 KOONTZ "B" 3 SARCO CREEK, W. (FRIO 4600) WAGNER OIL COMPANY 114889 KOOP 1 WESTHOFF (COMBINED ASSOCIATED) PROGENIES OPERATING LLC 258520 KOOP ET AL GAS UNIT 1 WILDCAT WYNN-CROSBY OPERATING, LTD. 244868 KOOPMAN O1 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267753 KOOPMAN 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 283181 KOOPMAN 01 - LANG 01 D 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 290763 KOOPMAN 01 - LANG 01 F 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 290801 KOOPMAN 01 - LANG 01 H 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 290781 KOOPMAN-LANG (A) 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 283612 KOOPMANN (ALLOCATION) 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 274000 KOSUB UNIT 1H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266703 KOSUB UNIT 2H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266864 KOSUB UNIT 3H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266846 KOSUB UNIT 4H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 268754 KOSUB UNIT 5H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 268734 KOSUB UNIT 6H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 280778 KOSUB UNIT 7H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 280897 KOSUB UNIT 8H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 281426 KOTARA-RIDLEY UNIT 1H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266693 KOTARA-RIDLEY UNIT 2H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266692 KOTARA-RIDLEY UNIT 3H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266687 KOTARA-RIDLEY UNIT 4H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266752 KOTARA-RIDLEY UNIT 5H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 268744 KOTARA-RIDLEY UNIT 6H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 268746 KOTARA-RIDLEY UNIT 7H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 268832 KOTARA-RIDLEY UNIT 16H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 288752 KOTARA-RIDLEY UNIT 16H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287966 KOTARA-RIDLEY UNIT 17H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 289261 KOTARA-RIDLEY UNIT 17H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287967 KOTARA-RIDLEY UNIT 21H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 283839 KOTARA-RIDLEY UNIT 23H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 286216 KOTARA-RIDLEY UNIT 24H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 286189


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KOWALIK 228-1R 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265799 KOWALIK 228-1R 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288734 KOWALIK 228-1R AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275704 KOWALIK 228-1R AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 288629 KOWALIK 228-1R AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 281072 KOZIELSKI UNIT 1H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 271603 KOZIELSKI UNIT 2H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 271719 KOZIELSKI UNIT 3H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 271729 KOZIELSKI UNIT 4H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 271727 KRAMER #3 1 LITTLE KENTUCKY (FRIO 5800) J POSEY OPERATING LLC 054128 KRANER UNIT A 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264872 KRANER UNIT A 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276674 KRANER UNIT A 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277622 KRANER UNIT A AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276752 KRANER UNIT A AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279046 KRANER UNIT A AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 277347 KRANER UNIT B 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264927 KRANER UNIT B 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265820 KRANER UNIT B 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274450 KRANER UNIT B 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275078 KRANER UNIT B AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275849 KRANER UNIT B AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275701 KRANER UNIT B AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 277624 KRAUSE 1 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 272581 KRAUSE 2 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 259319 KRAUSE A 1 EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 255061 KRAUSE B 1 EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 257509 KRAUSE B 11H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287771 KRAUSE B 13H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287935 KRAUSE GU1 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 269693 KRAUSE GU1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284572 KRAUSE GU1 A 3H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 285827 KRAUSE GU1 A 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284996 KRISTEK GAS UNIT 1 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 091617 KRISTEK GAS UNIT 2 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 131575 KRISTEK GAS UNIT 3 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 145193 KRISTEK GAS UNIT 4 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 145250 KRISTEK GAS UNIT 5 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 227841 KRUEGER 1 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 262002 KRUEGER UNIT 1 COTTONWOOD CREEK, S. (ROEDER) TRANS-PECOS RESOURCES, INC. 149162 KRUPALA, E. J. GAS UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 091825 KRUPALA, E. J. GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 101781 KRUPALA, E. J. GAS UNIT 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 117970 KRUPALA, E.J. GAS UNIT 1 WORD, N. (5800) CAPITAL STAR OIL & GAS, INC. 275526 KRUPALA, E.J. GAS UNIT 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 152748 KRUSE, NICHOLAUS 2 CLAYTON (SLICK 6450) GREATER SOONER HOLDINGS, INC. 150403 KUBECKA, P. F. HEIRS GAS UNIT 1 CORDELE, EAST (2900) CORDELE DEVELOPMENT CORPORATION 263679 KUBENA GAS UNIT 1 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 093566 KUBENA GAS UNIT 2 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 140335 KUBENA WILCOX GAS UNIT 4 WILDCAT SULPHUR RIVER EXPLORATION, INC. 165387 KUBENA WILCOX GAS UNIT 4 HALLETSVILLE (SIMMONS) SULPHUR RIVER EXPLORATION, INC. 165291


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KUENSTLER 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 209460 KUESTER 1 BRUSHY CREEK, S. (WILCOX 13900) CAMOIL, INC. 232905 KUESTER 1 KASPER, S. (KNAVE) OVERTON PARK OIL & GAS LP 144275 KUESTER OCHOA 4 HOPE (WILCOX MASSIVE) WANDOO ENERGY, LLC 228308 KUESTER UNIT 1H YOAKUM (EDWARDS) ATLAS OPERATING LLC 162215 KUESTER UNIT 2H YOAKUM (EDWARDS) ATLAS OPERATING LLC 169016 KUESTER-OCHOA 1 BRUSHY CREEK (WILCOX -S-1-11200) WANDOO ENERGY, LLC 189325 KUESTER-OCHOA 2 BRUSHY CREEK (WILCOX -S-1-11200) WANDOO ENERGY, LLC 191828 KUESTER, CHARLES 21 HELEN GOHLKE (FRIO 3150) B.P. PRODUCTIONS INC. 279871 KULAWIK 2 YORKTOWN (WILCOX 11,000 LO.) P1 ENERGY, LLC 150592 KULAWIK 3 YORKTOWN (WILCOX 11,000 LO.) P1 ENERGY, LLC 177060 KULAWIK 3 YORKTOWN, SOUTH (ROEDER) P1 ENERGY, LLC 163101 KUNDE UNIT A G 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258555 KUNDE UNIT A G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 225297 KUNDE UNIT A G 3 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258556 KUNDE UNIT A G 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 249741 KURETSCH, RAYMOND 1A GANADO, WEST ALLEGIANT RESOURCES, LLC 177176 KURETSCH, RAYMOND 2A GANADO, WEST (5150) ALLEGIANT RESOURCES, LLC 180960 KURTZ 1 CONQUISTADOR (JANAK SAND) SEDONA OIL & GAS CORP. 255395 L. KASKIE GAS UNIT 1 PROVIDENT CITY (WILCOX 13,800) HILCORP ENERGY COMPANY 183121 L. KASKIE GAS UNIT 2 PROVIDENT CITY (WILCOX 7) HILCORP ENERGY COMPANY 221339 L. KASKIE GAS UNIT 2 PROVIDENT CITY (WILCOX 13,800) HILCORP ENERGY COMPANY 190667 L. M. DIEMER 4 HEYSER (F-34) OMEGA ALPHA RESOURCES, LLC 257304 L. M. DIEMER 4 HEYSER (F-36) OMEGA ALPHA RESOURCES, LLC 257502 L. M. DIEMER 4 HEYSER (F-37) OMEGA ALPHA RESOURCES, LLC 257306 L. M. DIEMER 4 HEYSER (F-38) OMEGA ALPHA RESOURCES, LLC 257309 L. M. DIEMER 4 HEYSER (F-39) OMEGA ALPHA RESOURCES, LLC 257314 L. M. DIEMER 4 HEYSER (F-40) OMEGA ALPHA RESOURCES, LLC 257315 L. M. DIEMER 4 HEYSER (F-41) OMEGA ALPHA RESOURCES, LLC 257299 L. M. DIEMER 4 HEYSER (F-44) OMEGA ALPHA RESOURCES, LLC 257503 L. M. DIEMER 4 HEYSER (F-47) OMEGA ALPHA RESOURCES, LLC 257504 L. RANCH CO. -A- 43 F LOLITA (MINER SAND) MCGOWAN WORKING PARTNERS, INC. 063392 L.B. HAILEY UNIT 1H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 264506 L.B. HAILEY UNIT 2H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 264360 L.B. HAILEY UNIT 3H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 268795 L.B. HAILEY UNIT 6H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 285579 L.B. HAILEY UNIT 9H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 289145 L.B. HAILEY UNIT 9H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 288533 L.B. HAILEY UNIT 10H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 288975 L.B. HAILEY UNIT 10H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 288560 L.B. HAILEY UNIT 11H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 288929 L.B. HAILEY UNIT 11H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 288596 L.B. HAILEY UNIT 17H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 290276 L.B. HAILEY UNIT 18H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 290096 L.B. HAILEY UNIT 26H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 289069 L.B. HAILEY UNIT 26H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 288753 L.B. HAILEY UNIT 28H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 288797 L.B. HAILEY UNIT 28H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 286231 L.B. HAILEY UNIT 30H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 285580 L.B. HAILEY UNIT 31H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 290277 L.B. HAILEY UNIT 32H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 290885


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ L.B. HAILEY UNIT 32H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 290303 LA QUE SE FUE 1 MATTHEW GEORGE (FRIO 1980) SLIMHOLE ENGINEERING CO., INC. 148202 LA ROSA GAS UNIT 28 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 094307 LA ROSA UNIT 12 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 151068 LA ROSA UNIT 20 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 125934 LA ROSA UNIT 22 LA ROSA (5300) REMORA MANAGEMENT, LLC 052613 LA ROSA UNIT 24 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 083006 LA ROSA UNIT 27 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 151666 LA ROSA UNIT 41 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 153463 LA ROSA UNIT 43 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 156848 LA ROSA UNIT 45 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 162114 LA ROSA UNIT 46 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 187879 LA ROSA UNIT 47 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 179328 LA ROSA UNIT 48 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 192706 LA ROSA UNIT 49 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 188460 LA ROSA UNIT 51 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 195993 LA ROSA UNIT 52 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 198744 LA ROSA UNIT 54 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 224340 LA ROSA UNIT 56 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 231112 LA SILLIMAN 16 GANADO (V-5) KD ENERGY, LLC 273439 LABUS, J. V. 3 PANNA MARIA (EDWARDS) INPEX EAGLE FORD, LLC 133296 LACKEY UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264289 LACKEY UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266488 LAKE PLACEDO SWD 1 PLACEDO (5770) ACOCK/ANAQUA OPERATING CO., LP 262418 LAKE SCHWARTZ A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 271716 LAKE SCHWARTZ A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 271195 LAKESIDE 1 EL TORO (5250) SUE-ANN OPERATING, L.C. 194106 LAMB UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268978 LAMBERT 4 TOM OCONNOR (3500) DEVON ENERGY PRODUCTION CO, L.P. 004411 LAMBERT G 9 TOM OCONNOR (5100, EAST) HILCORP ENERGY COMPANY 004464 LAMBERT GAS UNIT 4 REFUGIO-FOX (GRIFFITH D) HILCORP ENERGY COMPANY 225897 LAMBERT GAS UNIT 32 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 279470 LAMBERT GAS UNIT 53 TOM OCONNOR (5100, EAST) HILCORP ENERGY COMPANY 260642 LAMBERT GAS UNIT 70 TOM O'CONNOR (4830) HILCORP ENERGY COMPANY 261056 LAMBERT GAS UNIT 71 TOM OCONNOR (5050, EAST) HILCORP ENERGY COMPANY 202726 LAMBERT GAS UNIT 85 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 244412 LAMBERT GAS UNIT 87 GRETA, DEEP (5500) HILCORP ENERGY COMPANY 225225 LAMBERT GAS UNIT 109 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 206528 LAMBERT GAS UNIT 111 GRETA (L- 4) HILCORP ENERGY COMPANY 263368 LAMBERT GAS UNIT 118 GRETA (L- 6 WEST) HILCORP ENERGY COMPANY 227198 LAMBERT GAS UNIT 125 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 234396 LAMBERT GAS UNIT 130 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 268041 LAMBERT GAS UNIT 150 TOM OCONNOR (7930) HILCORP ENERGY COMPANY 267700 LAMBERT GAS UNIT 211R TOM OCONNOR (5050, EAST) HILCORP ENERGY COMPANY 280723 LAMBERT GAS UNIT 213 TOM OCONNOR (7930) HILCORP ENERGY COMPANY 234216 LAMBERT GAS UNIT 213 TOM OCONNOR (7930) HILCORP ENERGY COMPANY 274195 LAMBERT GAS UNIT H 32 TOM OCONNOR (5615) HILCORP ENERGY COMPANY 259862 LAMBERT GAS UNIT H 61 TOM OCONNOR (5050, EAST) HILCORP ENERGY COMPANY 219870 LAMBERT GAS UNIT H109 GRETA (L-15) HILCORP ENERGY COMPANY 261171 LAMBERT-ROSE 2 REFUGIO-FOX (1675) HILCORP ENERGY COMPANY 262874 LAMBERT-WOOD 1 C SARCO CREEK (4700) WAGNER OIL COMPANY 123846


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LAMBERT-WOOD 7 SARCO CREEK (4700) WAGNER OIL COMPANY 134154 LAMBERT, J. A. 8 REFUGIO OLD (2400) WALLIS ENERGY, INC. 063138 LAMBERT, J. A. 9 REFUGIO NEW (1900) WALLIS ENERGY, INC. 066561 LAMBERT, M. F. 31 TOM OCONNOR (5680) HILCORP ENERGY COMPANY 061689 LAMBERT, M. F. 62 H REFUGIO-FOX (2600) HILCORP ENERGY COMPANY 146091 LAMBERT, M. F. 66 TOM OCONNOR (3900) HILCORP ENERGY COMPANY 209879 LAMBERT, M. F. 134 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 156622 LAMBERT, M. F. 155 TOM OCONNOR HILCORP ENERGY COMPANY 231079 LAMBERT, M. F. 211 WILDCAT HILCORP ENERGY COMPANY 221136 LAMBERT, M. F. B 1 GRETA (2950) HILCORP ENERGY COMPANY 182636 LAMBERT, M. F. B 2D REFUGIO-FOX (1675) HILCORP ENERGY COMPANY 183403 LAMBERT, M. F. B 2F WILDCAT HILCORP ENERGY COMPANY 189310 LAMBERT, M. F. B 2F REFUGIO-FOX (5500) HILCORP ENERGY COMPANY 159376 LAMBERT, M. F. G 2 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 058823 LAMBERT, M. F. G 8 TOM OCONNOR (5100, EAST) HILCORP ENERGY COMPANY 038501 LAMBERT, M. F. G 13 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 036882 LAMBERT, M. F. H 97 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 093703 LAMBERT, M. F. H133 REFUGIO-FOX (2480) HILCORP ENERGY COMPANY 173335 LAMBERT, M. F. H133-T SIENE BEAN (5150) HILCORP ENERGY COMPANY 162255 LAMBERT, M. F. U 86 GRETA (4400) HILCORP ENERGY COMPANY 067677 LAMBERT, M.F. H 64 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 214261 LAMBERT, MARY F. -E- E 3 TOM O'CONNOR (4830) HILCORP ENERGY COMPANY 117390 LAMPLEY, O. A. GU 4 DRY HOLLOW, NORTH (11,024) MERIT ENERGY COMPANY 277120 LANDER, O. M. 6 HEYSER (GRETA STRINGER) MCGOWAN WORKING PARTNERS, INC. 134113 LANDER, O. M. -B- 16 HEYSER, EAST (8040) MCGOWAN WORKING PARTNERS, INC. 116530 LANDER, O. M. "A" 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 055330 LANDER, O.M. -B- 18 HEYSER, EAST (8350) MCGOWAN WORKING PARTNERS, INC. 125123 LANDGREBE 2 BRANDT, N. (REKLAW) CHANDLER OIL & GAS, LLC 144046 LANDGREBE A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265523 LANDGREBE A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286234 LANDGREBE A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286590 LANDGREBE A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286235 LANDGREBE A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286217 LANDGREBE A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286218 LANDGREBE A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286236 LANDGREBE A 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286592 LANDGREBE, ERWIN 1 BRANDT (RECKLAW) BRITANCO, L.L.C. 143109 LANE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266390 LANE B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266391 LANGE, LARRY 1 CARTER THOMAS (THIRD YEGUA) MODERN EXPLORATION, INC. 203115 LANGHAM 3 FT. MERRILL, NORTH (11800) JAMEX, INC. 262438 LANGHAM 4 FT. MERRILL, NORTH (11800) JAMEX, INC. 264844 LANGHOFF UNIT A 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 271117 LANGHOFF UNIT A 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 275763 LANGHOFF UNIT A 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 275165 LANGHOFF UNIT A 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276302 LANGHOFF UNIT A 8L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288768 LANGHOFF UNIT A 9L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288773 LANGHOFF UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266701 LANGHOFF UNIT B 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 286534 LANGLEY UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 273529


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LANIK A 1 EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 256982 LANIK B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 259780 LARAMI, LTD 1 JOBAR (YEGUA) DEWBRE PETROLEUM CORPORATION 192591 LAROSA UNIT 16 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 137173 LAROSA UNIT 19 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 149158 LAROSA UNIT 22 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 149017 LAROSA UNIT 30 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 122254 LAROSA UNIT 37 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 149211 LAROSA UNIT 38 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 151047 LASCA BUTLER SEARCY TRUST 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258558 LASCA BUTLER SEARCY TRUST 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 254301 LASCA BUTLER-ESKEW NORTH USW 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 283548 LEACH 1 BIG 12 (YEGUA AY-3) EVEREST RESOURCE COMPANY 264530 LEDWIG GAS UNIT 1 YORKTOWN, NE. (WILCOX 8950) CHALLENGER OIL 118985 LEE 1 NURSERY (3500) PROPERTY DEVELOPMENT GROUP, INC. 255819 LEGACY TRUST 03 SPEAKS, SW. (WILCOX -A-) HYDROCARBON OPERATING, INC. 283279 LEHMAN & RICHARDS 1 POESTA CREEK (2750) SIDELINE ENERGY INC. 127769 LEMKE 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 263952 LEMMONS GAS UNIT 1 C WARMSLEY (MACKHANK) FLETCHER OPERATING, LLC 215581 LEMMONS GAS UNIT 1 T WARMSLEY (VAUGHN) FLETCHER OPERATING, LLC 215583 LEMMONS GAS UNIT 2 CHRISTMAS, SOUTH (GANSON) FLETCHER OPERATING, LLC 217992 LEMMONS GAS UNIT 2 WARMSLEY (VAUGHN) FLETCHER OPERATING, LLC 238779 LENNOX, EMMA B. -A- 2 C KITTY BURNS ( QUEEN CITY) MARWELL PETROLEUM LTD PARTNRSHIP 048483 LENTZ 1 ELOISE (5800) ACOCK/ANAQUA OPERATING CO., LP 290641 LENTZ 1 C VIC-WITT (3300) APEX ENERGY, INC. 215071 LENTZ 1 T THOMASTON (YEGUA 5230) APEX ENERGY, INC. 215073 LENTZ 2 ELOISE (6760) ACOCK/ANAQUA OPERATING CO., LP 288674 LENTZ 3 ELOISE (6760) ACOCK/ANAQUA OPERATING CO., LP 290673 LENTZ, E. M. B 1 ELOISE (JUDI 5700) RAWHIDE OPERATING, INC. 158611 LENTZ, EVELYN 1 ELOISE, SW. (KERFOOT 6040) CORUM PRODUCTION COMPANY 245574 LEONARD KUENSTLER GAS UNIT 1 STINGRAY (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 225004 LEPPARD GU 2 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 221103 LEPPARD, J. A. 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 064753 LESKE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264465 LESKE-LOTT UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289620 LESKE-LOTT UNIT 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286278 LESKE-LOTT UNIT 3H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286279 LESKE-LOTT UNIT 4H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286321 LESKE-LOTT UNIT 5H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286290 LESKE-LOTT UNIT 6H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288013 LESKE-LOTT UNIT 7H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288014 LESKE-LOTT UNIT 8H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286005 LESLIE PLOEGER NO. 2 GU 2 BORCHERS DEEP (FREEMAN SAND) XTO ENERGY INC. 199088 LEVI PULLIN UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277285 LEWIS 2 MONSON (QUEEN CITY) ARETE OPERATING COMPANY, LLC 206853 LEY 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 272175 LFW 3 DINERO, W. (4300) WELDER EXPLORATION & PROD., INC. 257631 LINDER,RAY 1 BALFOUR, NE. (YEGUA 4950) EVEREST RESOURCE COMPANY 223865 LINDHOLM 1 MAXINE, EAST (MASSIVE, LO.) BRITANCO, L.L.C. 071091 LINDHOLM, CHARLES 1 MAXINE, NE (8000) MAGNUM PRODUCING, LP 052283 LISKA 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266426


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LISKA 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 275061 LISKA 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 275122 LISKA 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 275062 LISKA 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 275065 LISKA 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274643 LISKA 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274644 LISKA 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274645 LISKA 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274646 LISKA 01 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276894 LISKA 01 11H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274647 LISKA 01 12H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280556 LISKA 01 13H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280766 LISKA 01 14H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280767 LISKA 01 15H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280781 LISKA 01 16H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280782 LISKA 01 17H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280768 LISKA 01 18H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280597 LISKA 01 19H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280598 LISKA 01 20H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280595 LISKA 01 21H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280769 LISKA 01 22H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280633 LISKA 01 23H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280634 LITTLE JOHN 1 C BEEVILLE, NORTH (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 232156 LITTLETON, J. B. 1 U EL TORO (5700) OSYKA PERMIAN, LLC 133269 LIVE BEE UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269843 LIVE BEE UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270917 LIVE BEE 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269846 LIVE BEE 03 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268917 LIVE OAK PARTNERS 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270526 LIVE OAK PARTNERS 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278461 LIVE OAK PARTNERS 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278843 LIVE OAK PARTNERS 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278463 LIVE OAK PARTNERS 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272426 LIVE OAK PARTNERS 02 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272398 LIVE OAK PARTNERS 02 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272423 LIVE OAK SWD 1 OAKVILLE (WILCOX CONS.) TRISUN ENERGY SERVICES LLC 271623 LIVINGSTON GAS UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259781 LIVINGSTON GAS UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268999 LIVINGSTON GAS UNIT 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 279611 LJ 2 JACKSON RANCH (YEGUA 5300) CIMARRON ENGINEERING, LLC 288676 LOCKWOOD, M. G. 1 SAN ANTONIO BAY, N. (D-5) CREST PETROLEUM, LLC 112255 LOCKWOOD, M. G. 2 L SAN ANTONIO BAY, N. (D-3) CREST PETROLEUM, LLC 004051 LOCKWOOD, M. G. 2 U SAN ANTONIO BAY, N. (D 1-2) CREST PETROLEUM, LLC 004049 LOCKWOOD, M. G. 3 L SAN ANTONIO BAY, N. (E-1) CREST PETROLEUM, LLC 004054 LOCKWOOD, M. G. 3 U SAN ANTONIO BAY, N. (D-3) CREST PETROLEUM, LLC 004052 LONG 8 FRED LONG (HOCKLEY 3850) LONG, FRED E. 197467 LONG 13 SINGLETON (1900) ENCO EXPLORATION COMPANY 283437 LONG 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 258285 LONG 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270364 LONG 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269195 LONG 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270584


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LONGS RIVER 1 WEARDEN RANCH (3750) O'TOOL OIL & GAS, LLC 266679 LOOS UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 271118 LOOS UNIT 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276275 LOOS UNIT 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276303 LOOS UNIT 8H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276293 LOOS UNIT 9H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 287445 LOOS UNIT 10H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 287894 LOOS UNIT 11L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288992 LOOS UNIT 12L DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 288931 LOUISE STRAUBE 02 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266430 LOUISE STRAUBE 02 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281417 LOUISE STRAUBE 02 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281181 LOUISE STRAUBE 02 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281176 LOUISE STRAUBE 02 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281183 LOUISE STRAUBE 02 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281184 LOUISE STRAUBE 02 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281182 LOVE GAS UNIT 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 232816 LOVE UNIT 1H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 263665 LOVE UNIT 2H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 263666 LOVE UNIT 3H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 287786 LOVE UNIT 4H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266814 LOVE UNIT 5H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266709 LOVE UNIT 6H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 266710 LOVE UNIT 18H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 286233 LOVE UNIT 29H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 286326 LOVEL A BLAIN III GAS UNIT 4 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 228086 LOVEL A BLAIN III GAS UNIT 5 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 238228 LOVEL A. BLAIN III GAS UNIT 3 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 122511 LOVETT 1 FRANCITAS (F-15-A) GARRISON LTD. 250389 LOVETT EST. 3 FRANCITAS (F-16) VOTAW PRODUCTION COMPANY LLC 054940 LOVETT EST. 4 FRANCITAS (FRIO 8600) VOTAW PRODUCTION COMPANY LLC 054941 LOVETT ESTATE 1 FRANCITAS (-A- SAND) VOTAW PRODUCTION COMPANY LLC 001583 LOWER YEGUA EAST 1 HOPE (MIOCENE 2660) BIG LAKE CORPORATION 217065 LP BUTLER B 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281940 LP BUTLER B 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281934 LP-BUTLER A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 263747 LP-BUTLER A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288990 LP-BUTLER A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289253 LP-BUTLER A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285961 LP-BUTLER A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285974 LP-BUTLER A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288989 LP-BUTLER A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289053 LP-BUTLER A 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288987 LP-BUTLER A 9H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285976 LP-BUTLER A 10H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285977 LP-BUTLER A 11H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288868 LP-BUTLER A 12H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288988 LP-BUTLER A 13H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288869 LP-BUTLER A- JORDAN A SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 289055 LP-BUTLER B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264152 LUBINSKI 1 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 236289


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LUBINSKI 2 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 257228 LUKER 2 BRANDT (WILCOX 9800) U1 RANCH OIL 225148 LUKER 2 T WEESATCHE, NE. (HOLT FB A) U1 RANCH OIL 185552 LUKER 2-C WEESATCHE, NE. (WILCOX) U1 RANCH OIL 186421 LUKER 3 T WEESATCHE, NE. (HOLT FB A) U1 RANCH OIL 188974 LUKER 3-C WEESATCHE, NE. (WILCOX) U1 RANCH OIL 186395 LUKER, B. J ET AL 1 HARREL (SLICK) U1 RANCH OIL 134123 LUKER, B. J. 1 WESER (RECKLAW 7560) U1 RANCH OIL 177976 LUKER, B.J. 1 BRANDT, S. (BRANDT 7485) U1 RANCH OIL 098998 LULING-BOYCE A 25 BURNELL (SLICK) FLETCHER OPERATING, LLC 037402 LUNA UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 259817 LUNA UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268976 LUNA UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275446 LUNA UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275449 LUNA UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275248 LUNA UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277619 LUNA UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276261 LUNA UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276279 LUNA UNIT 14H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277286 LUNA UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265151 LUNA UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 285883 LUNA UNIT AC 10H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279823 LUNA UNIT AC 11H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279825 LUNA UNIT AC 14H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 278055 LUNDSCHEN-NEESE 1 WILDCAT CIMAREX ENERGY CO. OF COLORADO 163367 LYMAN A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 267045 LYMAN A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284995 LYMAN A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284808 LYMAN A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284818 LYMAN A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 284849 LYNE GAS UNIT -A- 3 CHARLINE (FORNEY) BAY ROCK OPERATING COMPANY 101345 LYNE GAS UNIT "A" 6 CHARLINE (FORNEY) BAY ROCK OPERATING COMPANY 180277 LYNE, T. J. 22LT TOM LYNE, N. (WILCOX 10,000) REMORA OPERATING, LLC 155286 LYNE, T. J. 22UT TOM LYNE, N. (WILCOX 9350) REMORA OPERATING, LLC 155997 LYNE, T. J. -A- 15 CLAY WEST (MASSIVE WILCOX 10600) REMORA OPERATING, LLC 107072 LYNES, J. R. ET AL 1 SPRING CREEK, N. (COLE) NEW HORIZON INVESTMENTS LTD. 055375 LYONS 2 SPEARY (2600) ENPOWER RESOURCES INC. 161574 M & O GAS UNIT 8 F GANADO (F-16) KD ENERGY, LLC 036262 M & O GAS UNIT 8 G GANADO (F-18) KD ENERGY, LLC 036258 M & O GAS UNIT (OH8) 17 GANADO (3700) KD ENERGY, LLC 220112 M L & I GAS UNIT 20 F GANADO (F- 4-C SEG 2) KD ENERGY, LLC 115989 M. CUSACK A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 268029 M. CUSACK B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 268027 M. CUSACK B 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281936 M. CUSACK B 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281944 M. E. O'CONNOR D 1 REFUGIO OLD (6200) T-C OIL COMPANY, LLC 290391 M. F. LAMBERT 151 151 TOM OCONNOR (6280) HILCORP ENERGY COMPANY 258066 M. KOOPMANN UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266281 M. KOOPMANN UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282947 M. KOOPMANN UNIT A 201 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282723 M. KOOPMANN UNIT A 202 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282926


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ M. KOOPMANN UNIT A 203 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282763 M. KOOPMANN UNIT A 204 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 282932 M.A. WESLEY 1 KOENIG, NORTH (WILCOX MIGURA) TEXRON OPERATING, LLC 249474 M.D.J. 1 NURSERY (3500) APEX ENERGY, INC. 245941 M&P RANCH LLC 1 SWINNEY SWITCH (HOCKLEY, SECOND) WELDER EXPLORATION & PROD., INC. 255296 MA 206 C 1-C HELEN GOHLKE (VICKSBURG 3800) DFG OIL & GAS, LLC 170674 MA 206 C 1-T HELEN GOHLKE (VICKSBURG 3900) DFG OIL & GAS, LLC 170678 MACHICEK UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 272419 MAD KING UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289918 MAGARIGAL GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 273092 MAGARIGAL GAS UNIT 1 A 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 267716 MAGARIGAL GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272519 MAGARIGAL GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272090 MAGGIE BRANCH 4 GANADO (3800) KD ENERGY, LLC 143857 MAGGIE MCNEILL B 1 C. A. WINN (YEGUA 5320) SUE-ANN OPERATING, L.C. 269256 MAGUGLIN UNIT 3 COQUAT (10500) PROLINE ENERGY RESOURCES INC 219215 MAGUGLIN UNIT 4 COQUAT (12700) PROLINE ENERGY RESOURCES INC 206488 MAGUGLIN UNIT 5 COQUAT (12700) PROLINE ENERGY RESOURCES INC 207943 MAGUGLIN, GEORGE 1 COQUAT (12700) PROLINE ENERGY RESOURCES INC 099506 MALONE 3 BEEVILLE, NORTH (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 283121 MALONE 8 BEEVILLE, NORTH (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 283438 MALONE 12 BEEVILLE (2700) HEADWATERS ENERGY PARTNERS, LLC 280562 MALONE 15 SINGLETON (HOCKLEY 3800) HEADWATERS ENERGY PARTNERS, LLC 262238 MALONE -A- 1 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 245435 MALONE -A- 1 MEDIO CREEK (4100) T-C OIL COMPANY, LLC 262028 MALONE -B- 1 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 245928 MALONE -C- 1 MEDIO CREEK (4100) T-C OIL COMPANY, LLC 245438 MALONE -D- 1 MEDIO CREEK (4100) T-C OIL COMPANY, LLC 253345 MALONE, GRACE FOX ET AL 3 MALONE (4500) COLEMANITE, INC. 128697 MALONE, SID 2 NORMANNA, S. (2050) DISCOVERY PETROLEUM, L.L.C. 089641 MANGIONE 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268531 MANGIONE 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269542 MANGIONE 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273140 MANGIONE 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272380 MANGIONE 01 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273141 MANGIONE 01 12H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272381 MANSKER "A" 2 CAUSEY (11,100) FLETCHER OPERATING, LLC 184812 MARALDO A403 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 250474 MARBERRY 7 U MCFADDIN (1875) ALLEGIANT RESOURCES, LLC 052505 MARBERRY 20 MCFADDIN (2450) ALLEGIANT RESOURCES, LLC 272723 MARBERRY 25 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 284450 MARBERRY "B" 4 MCFADDIN (2900) ALLEGIANT RESOURCES, LLC 141534 MARIE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263750 MARILOU MCCAMPBELL 4 UNA WEST (S-SAND) OSYKA PERMIAN, LLC 253915 MARION & LA VERNIA JUNE FIMBEL 4 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 219597 MARION & LA VERNIA JUNE FIMBEL 6 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 219409 MARK KATZFEY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 259685 MARKS 1 R TERRELL POINT (3915) WESTERN ENERGY GROUP, LLC 256617 MARLENE OLSON 2 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 255738 MARLENE OLSON 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272136 MARLENE OLSON 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277553


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MARLENE OLSON 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277686 MARLENE OLSON 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277729 MARLENE OLSON 7 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277730 MARLER-SLAUGHTER-RHODES (SA) B1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284343 MARSHALL "B" 1 SLICK, S. (WILCOX "J") ESTATE OF JAMES L. NELSON 200715 MARSHALL, H. T. 3 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 136637 MARSHALL, H. T. (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 090791 MARSHALL, H.T. 8 HEYSER (F-37) MCGOWAN WORKING PARTNERS, INC. 134971 MARSHALL, WILLIAM 1 BOYCE (HOCKLEY) ESTATE OF JAMES L. NELSON 142659 MARTIN 1 CLAY WEST (WILCOX 10400) JAMEX, INC. 259051 MARTIN 1 CLAY WEST (WILCOX 10,750) FIELD PETROLEUM CORP. 192478 MARTIN 1 SHARONLEE (SLIGO) DYNAMIC PRODUCTION, INC. 235990 MARTIN UNIT 2 THEIS, SOUTH(SLICK FIRST) MAGNUM PRODUCING, LP 220079 MARTIN, M. E. 1 AUSTIN (WILCOX 12,300) SIANA OIL & GAS 229876 MARTIN, MARY 1 GOLIAD, N. (3250) AMPAK OIL COMPANY 193749 MARTINSON 1 TULETA (YEGUA 4060) BRITANCO, L.L.C. 185602 MARTINSON 2 TULETA (YEGUA 4060) BRITANCO, L.L.C. 184648 MARY ALICE ANDERSON ET AL-A- A 10 FAGAN (2150) MARAN OIL COMPANY 274356 MARY ALICE ANDERSON, ET AL -A- A 14 FAGAN (3350) MARAN OIL COMPANY 290421 MARY ALICE JONES 1 MURRY'S MAGIC (YEGUA) CIMARRON ENGINEERING, LLC 256072 MARY B. GOLSCH GAS UNIT 1 HALLETTSVILLE, EAST (9800) SULPHUR RIVER EXPLORATION, INC. 113228 MARY B. GOLSCH GAS UNIT 1 4 HALLETTSVILLE, EAST (9800) SULPHUR RIVER EXPLORATION, INC. 109231 MARY CLAIRE BAUER ET VIR 10 TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 255287 MARY F. LAMBERT "EA" A 8 TOM O'CONNOR (5350 SAND) HILCORP ENERGY COMPANY 254174 MATEJEK GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268013 MATEJEK 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 263988 MATEJEK 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271616 MATEJEK 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271617 MATEJEK 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271618 MATEJEK 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271615 MATEJEK 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 278991 MATEJEK 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280330 MATEJEK 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280344 MATEJEK 01 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 278594 MATEJEK 01 10H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 278596 MATKIN SUGARKANE UNIT 1 1H SUGARKANE (EAGLE FORD) BPX OPERATING COMPANY 266698 MATKIN, W. C. ESTATE - WN 2 CLAYTON (SLICK 6450) GREATER SOONER HOLDINGS, INC. 153670 MATTHEW-KUESTER 18 L HELEN GOHLKE ( WILCOX B-2) PETRODOME OPERATING, LLC 002034 MATTHEW-KUESTER 18 U HELEN GOHLKE ( WILCOX A-1) PETRODOME OPERATING, LLC 059775 MATTHEWS 1 BRUSHY CREEK, S. (WILCOX 13900) BUFFCO PRODUCTION INC. 171515 MATTHEWS 2 BRUSHY CREEK, S. (WILCOX 13900) BUFFCO PRODUCTION INC. 176365 MATTHEWS-KUESTER 7 HELEN GOHLKE ( YEGUA K) PETRODOME OPERATING, LLC 171759 MATULA GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 263548 MATULA, ROBERT 2 MAXINE, EAST (8700) SM OPERATING COMPANY LLC 137952 MAUDE B TRAYLOR 8 MAUDE B. TRAYLOR, NORTH (28) ALLEGIANT RESOURCES, LLC 290617 MAUDE B. TRAYLOR 2 MAUDE B. TRAYLOR (F-41-61, DEEP) ALLEGIANT RESOURCES, LLC 259742 MAUDE B. TRAYLOR 44 MAUDE B. TRAYLOR (F-41-61, DEEP) WAGNER OIL COMPANY 251312 MAUDE B. TRAYLOR "B" 9 MAUDE B. TRAYLOR (F-41-61, DEEP) ALLEGIANT RESOURCES, LLC 237664 MAUDE TRAYLOR A 5 MAUDE B. TRAYLOR (F-41-61, DEEP) REMORA OPERATING, LLC 233423 MAUDE TRAYLOR A 6 MAUDE B. TRAYLOR (F-41-61, DEEP) REMORA OPERATING, LLC 245519 MAUDE WILLIAMS ET AL -A- 40 TOM OCONNOR (3550) HILCORP ENERGY COMPANY 286558


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MAUDE WILLIAMS ET AL 'A' 31 GRETA (L- 8) HILCORP ENERGY COMPANY 281164 MAUDE WILLIAMS ET AL 'A' 52 TOM OCONNOR HILCORP ENERGY COMPANY 281614 MAUDE WILLIAMS ET AL 'A' D 21 LAKE PASTURE (FS 559) HILCORP ENERGY COMPANY 281753 MAUDE WILLIAMS ET AL 'A' D111 LAKE PASTURE (M-295) HILCORP ENERGY COMPANY 287568 MAUDE WILLIAMS ET AL 'A' D146 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 288183 MAUDE WILLIAMS ET AL 'A' D189 LAKE PASTURE (E-282) HILCORP ENERGY COMPANY 278067 MAUDE WILLIAMS ET AL 'B' 17 GRETA (L- 4) HILCORP ENERGY COMPANY 284603 MAUDE WILLIAMS ET AL 'B' 36 TOM OCONNOR (2050) HILCORP ENERGY COMPANY 281674 MAUDE WILLIAMS ET AL "A" 25 GRETA (L- 4) HILCORP ENERGY COMPANY 250330 MAUDE WILLIAMS ET AL "A" D 2G LAKE PASTURE (E-244) HILCORP ENERGY COMPANY 284625 MAUDE WILLIAMS ET AL "A" D 5 LAKE PASTURE (FS-536) HILCORP ENERGY COMPANY 254094 MAUDE WILLIAMS ET AL "A" D 6 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 263355 MAUDE WILLIAMS ET AL "A" D 41 LAKE PASTURE (E-282) HILCORP ENERGY COMPANY 231400 MAUDE WILLIAMS ET AL "A" D 45 LAKE PASTURE (E-279) HILCORP ENERGY COMPANY 245523 MAUDE WILLIAMS ET AL "A" D 46 LAKE PASTURE (M-307) HILCORP ENERGY COMPANY 256712 MAUDE WILLIAMS ET AL "A" D 83 LAKE PASTURE (FS-534) HILCORP ENERGY COMPANY 254530 MAUDE WILLIAMS ET AL "A" D 87 LAKE PASTURE (FS-538) HILCORP ENERGY COMPANY 261124 MAUDE WILLIAMS ET AL "A" D146 LAKE PASTURE (M-348) HILCORP ENERGY COMPANY 237875 MAUDE WILLIAMS ET AL "A" D162 LAKE PASTURE (E-219) HILCORP ENERGY COMPANY 260576 MAUDE WILLIAMS ET AL "B" 38 GRETA (L-15) HILCORP ENERGY COMPANY 252509 MAUDE WILLIAMS, ET AL -B- 36 TOM O'CONNOR (2830) HILCORP ENERGY COMPANY 143855 MAURBRO FIELD/MARG/UNIT #1 1007 MAURBRO KD ENERGY, LLC 158909 MAURBRO FIELD/MARG/UNIT NO.1 1406 MAURBRO KD ENERGY, LLC 159444 MAURITZ, H. & TRUST 1 MAURITZ (5700) FREDCO 074620 MAURITZ, T. N. 6 GANADO, WEST ALLEGIANT RESOURCES, LLC 085592 MAURITZ, T.N. 8 GANADO, WEST (5900) ALLEGIANT RESOURCES, LLC 148417 MAURTIZ, T.N. 7 GANADO, WEST (5200) ALLEGIANT RESOURCES, LLC 164450 MAY B UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270327 MAY B UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 272778 MAY B UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 272525 MAY B UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273487 MAY B UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 272779 MAY B UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277623 MAY B UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277101 MAY B UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279630 MAY B UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 279559 MAY B UNIT 13H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285056 MAY B UNIT 16H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284883 MAY B UNIT 17H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284987 MAY B UNIT 18H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284535 MAY B UNIT 21H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284536 MAY B UNIT 22H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284540 MAY B UNIT 23H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284047 MAY B UNIT 24H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283429 MAY B UNIT 25H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284541 MAY B UNIT 26H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283249 MAY B UNIT 27H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283250 MAY B UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279244 MAY B UNIT AC 2HR SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 277566 MAY B UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280394 MAY B UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280084


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MAY B UNIT AC 22H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 284871 MAY B UNIT AC 24H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 283516 MAY UNIT 1 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 259818 MAY UNIT 1 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 267657 MAY UNIT 1 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278783 MAY UNIT 1 AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265086 MAY UNIT 1 AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 284431 MAY UNIT 1 AC 11H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289340 MAY UNIT 1 AC 12H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279829 MAYFIELD 1 LIONS (CORONA CONSOLIDATED) BLUEFIN RESOURCES LLC 219309 MAYFIELD, P. O. 1 BOYCE (PETTUS) ADVANTAGE OIL & GAS, INC. 173250 MAYWALD 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269411 MC CARN A 5H SUGARKANE (EAGLE FORD) BPX OPERATING COMPANY 266844 MC CARN B 1H SUGARKANE (EAGLE FORD) BPX OPERATING COMPANY 266847 MC FADDIN 514 MCFADDIN (2200) ALLEGIANT RESOURCES, LLC 212480 MC FADDIN 1069 MCFADDIN (5500) ALLEGIANT RESOURCES, LLC 207458 MCALISTER UNIT 1H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 265430 MCALISTER UNIT 2H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 267295 MCALISTER UNIT 4H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 265431 MCALISTER UNIT 5H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 268799 MCALISTER UNIT 6H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 269026 MCALISTER UNIT 7H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 270435 MCALISTER UNIT 8H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 270230 MCALISTER UNIT 9H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 281768 MCALISTER UNIT 10H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 280543 MCALISTER UNIT 11H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 281770 MCALISTER UNIT 12H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 281771 MCALISTER UNIT 20H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 285020 MCALISTER UNIT 23H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 284928 MCALISTER UNIT 24H SUGARKANE (EAGLE FORD) VALIDUS NRG AQUILAS ASSETCO LLC 285080 MCCABE 1 HOPE (WILCOX MASSIVE) WANDOO ENERGY, LLC 222195 MCCABE 1R SAWFISH (WILCOX 10400) HURD ENTERPRISES, LTD. 290271 MCCABE 2 SAWFISH (WILCOX 10400) HURD ENTERPRISES, LTD. 290827 MCCAMPBELL, MARILOU 14 UNA WEST (6700) OSYKA PERMIAN, LLC 151000 MCCAMPBELL, MARILOU 15 UNA WEST (6200) OSYKA PERMIAN, LLC 163328 MCCAN 5B WELDER RANCH (5670) CXL ENERGY LLC 168792 MCCAN 9 MCFADDIN, NORTH (5600) FLETCHER OPERATING, LLC 288865 MCCAN 25 MCFADDIN, NORTH (3200) FLETCHER OPERATING, LLC 289582 MCCAN R 1 T MCFADDIN, NORTH (5350) FLETCHER OPERATING, LLC 259551 MCCAN R 1C MCFADDIN, NORTH (4900) FLETCHER OPERATING, LLC 259549 MCCAN R 2 MCFADDIN, NORTH (5200) FLETCHER OPERATING, LLC 261911 MCCAN R 3 MCFADDIN, NORTH (5100 -B-) FLETCHER OPERATING, LLC 265468 MCCAN T 2 MCFADDIN, NORTH (5600) FLETCHER OPERATING, LLC 253259 MCCAN T 3 MCFADDIN, NORTH (6350) FLETCHER OPERATING, LLC 231310 MCCAN T 5 MCFADDIN, NORTH (5350) FLETCHER OPERATING, LLC 232306 MCCAN T 6 MCFADDIN, NORTH (5680) FLETCHER OPERATING, LLC 253269 MCCAN T 8 MCFADDIN, NORTH (5400) FLETCHER OPERATING, LLC 246666 MCCAN, C. K. JR. "B" 6 SALEM (3525) CXL ENERGY LLC 173784 MCCAN, C. K. JR. "C" 6 SALEM (1100) CXL ENERGY LLC 135419 MCCAN, C. K. JR. ET AL 29 SALEM (1800) DAYLIGHT PETROLEUM LLC 207901 MCCAN, C. K. JR. ET AL 30 SALEM (860) DAYLIGHT PETROLEUM LLC 213953


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCCAN, C. K. JR. ET AL "A" 2 SALEM (3700) DAYLIGHT PETROLEUM LLC 108138 MCCAN, C. K. JR. ET AL "A" NCT 1 SALEM (1420) DAYLIGHT PETROLEUM LLC 109437 MCCAN, C.K. JR. ET AL "A" NCT 37 SALEM (3950) DAYLIGHT PETROLEUM LLC 155138 MCCAN, C.K. JR. ET AL "C" 1 SALEM (1600) CXL ENERGY LLC 141990 MCCAN, C.K. JR. ET AL "C" 9 SALEM (1300) CXL ENERGY LLC 149759 MCCAN, C.K. JR., ET AL "B" 1 SALEM (1500) CXL ENERGY LLC 167812 MCCAN, JR. ET AL 26 SALEM (1300) DAYLIGHT PETROLEUM LLC 133732 MCCANN SWD T 1 MCFADDIN, NORTH (4500) FLETCHER OPERATING, LLC 275833 MCCASLIN, C. L. 24-F RAMIRENA, SW. (YEGUA 7, SEG B-1) CIMARRON ENGINEERING, LLC 147032 MCCASLIN, CHARLES L. 18-D RAMIRENA, SW (JACKSON STRAY) CIMARRON ENGINEERING, LLC 158260 MCCLANAHAN 1H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 273046 MCCLANAHAN 2H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 272378 MCCLANAHAN 3H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 272154 MCCLANAHAN 4H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 272375 MCCLANAHAN 5H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 272991 MCCLANAHAN GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 260241 MCCLANAHAN GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 278185 MCCLANAHAN GAS UNIT 1 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 278286 MCCLANAHAN GAS UNIT 1 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 278297 MCCLANAHAN GAS UNIT 1 C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 278301 MCCLANAHAN GAS UNIT 1 C 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 278184 MCCLANAHAN-BLACKWELL 2 (SA) B4 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287126 MCCLANAHAN-BLACKWELL 2 (SA) B5 B 5H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 287124 MCCLANAHAN-BLACKWELL 2 (SA) B5 B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287081 MCCLANAHAN-BLACKWELL 2 (SA) B6 B 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 286599 MCCLELLAND 15 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 089642 MCCLELLAND 16 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 159385 MCCLELLAND 17 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 098082 MCCLELLAND 18 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 102307 MCCLELLAND 19 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 103095 MCCLELLAND 20 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 106489 MCCLELLAND 22 OAKVILLE (WILCOX 7700) WAGNER OIL COMPANY 283645 MCCLELLAND 24 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 142820 MCCLELLAND 26 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 159375 MCCLELLAND 27 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 178937 MCCLELLAND 28 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 178941 MCCLELLAND 29 OAKVILLE (SLICK -A-) WAGNER OIL COMPANY 287477 MCCLELLAND 30 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 182939 MCCLELLAND "C" 1 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 099695 MCCLELLAND "C" 2 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 101274 MCCLELLAND "C" 4 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 145721 MCCLELLAND "E" 1 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 106843 MCCLELLAND G. U. "B" 1 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 095340 MCCLELLAND G. U. "B" 2 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 099694 MCCLENDON 4 TRES TOROS (HOCKLEY) GENESIS WELL SERVICE 197367 MCCORD 2 INEZ (FRIO 4700) GEONATURAL RESOURCES, INC. 188166 MCCOY 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 245957 MCCOY GAS UNIT 2 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 254354 MCCOY UNIT A 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286007 MCCOY UNIT A 3H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286008 MCCRORY 1 T GANADO (FRIO 6620) MAMEROW ENERGY CORP 123162


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCCRORY, W.W. 6 GANADO (5400) MAMEROW ENERGY CORP 125306 MCDONALD, A.B. 1 SHERIFF, EAST (8530) XOG OPERATING LLC 107773 MCDOWELL 1 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 214981 MCDOWELL 2 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 216081 MCDOWELL 4 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 250403 MCDOWELL "A" 1 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 235002 MCDOWELL "A" 2 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 247338 MCDOWELL SWD 1D KENEDY, SW. (SLIGO) CWR MANAGEMENT LLC 212748 MCELROY 1 VIENNA (FRIO 3300) ACT OPERATING, INC. 171747 MCELVEEN, H.O. 1 L EL TORO, SW. (6300) OSYKA PERMIAN, LLC 135787 MCEWANS 1 HALLETTSVILLE (10,150) LGDC CORPORATION 256310 MCEWANS 1 WORD, N. (EDWARDS) LGDC CORPORATION 251466 MCFADDIN 4 MCFADDIN (3400) ALLEGIANT RESOURCES, LLC 190671 MCFADDIN 5 MCFADDIN (3200) ALLEGIANT RESOURCES, LLC 205465 MCFADDIN 6 MCFADDIN (3000) ALLEGIANT RESOURCES, LLC 244740 MCFADDIN 6 MCFADDIN (3430) ALLEGIANT RESOURCES, LLC 201224 MCFADDIN 19 MCFADDIN (GRETA STRINGER) ALLEGIANT RESOURCES, LLC 080714 MCFADDIN 55 MCFADDIN (4050) ALLEGIANT RESOURCES, LLC 153659 MCFADDIN 59 MCFADDIN (2500) ALLEGIANT RESOURCES, LLC 145850 MCFADDIN 117 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 144051 MCFADDIN 121 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 154506 MCFADDIN 122 MCFADDIN (2200) ALLEGIANT RESOURCES, LLC 155290 MCFADDIN 123 MCFADDIN (1900) ALLEGIANT RESOURCES, LLC 043528 MCFADDIN 126 MCFADDIN (3500) ALLEGIANT RESOURCES, LLC 153689 MCFADDIN 129 MCFADDIN (2900) ALLEGIANT RESOURCES, LLC 153690 MCFADDIN 131 MCFADDIN (2200) ALLEGIANT RESOURCES, LLC 031592 MCFADDIN 138 MCFADDIN (2500) ALLEGIANT RESOURCES, LLC 149529 MCFADDIN 140 MCFADDIN (5000) ALLEGIANT RESOURCES, LLC 002773 MCFADDIN 145 MCFADDIN (3300) ALLEGIANT RESOURCES, LLC 192353 MCFADDIN 145 MCFADDIN (4050) ALLEGIANT RESOURCES, LLC 125001 MCFADDIN 146 MCFADDIN (2900) ALLEGIANT RESOURCES, LLC 168089 MCFADDIN 153 MCFADDIN (2900) ALLEGIANT RESOURCES, LLC 174700 MCFADDIN 156 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 287760 MCFADDIN 157 MCFADDIN (2600) ALLEGIANT RESOURCES, LLC 280303 MCFADDIN 158 MCFADDIN (3400) ALLEGIANT RESOURCES, LLC 116177 MCFADDIN 159 MCFADDIN (5700) ALLEGIANT RESOURCES, LLC 146767 MCFADDIN 161 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 287149 MCFADDIN 164 MCFADDIN (3400) ALLEGIANT RESOURCES, LLC 286666 MCFADDIN 172 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 286097 MCFADDIN 179 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 220556 MCFADDIN 180 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 285889 MCFADDIN 182 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 247617 MCFADDIN 185 MCFADDIN (3200) ALLEGIANT RESOURCES, LLC 280304 MCFADDIN 187 MCFADDIN (5720) ALLEGIANT RESOURCES, LLC 269595 MCFADDIN 193H MCFADDIN (TOM OCONNOR) ALLEGIANT RESOURCES, LLC 290519 MCFADDIN 199D MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 282838 MCFADDIN 506 MCFADDIN (3100) ALLEGIANT RESOURCES, LLC 161748 MCFADDIN 512 MCFADDIN (1900) ALLEGIANT RESOURCES, LLC 046870 MCFADDIN 515 MCFADDIN (3300) ALLEGIANT RESOURCES, LLC 151041 MCFADDIN 971 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 283628 MCFADDIN 974 MCFADDIN (2500) ALLEGIANT RESOURCES, LLC 269673


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCFADDIN C 2 MCFADDIN (2500) ALLEGIANT RESOURCES, LLC 244451 MCFADDIN K 68 MCFADDIN (3600) ALLEGIANT RESOURCES, LLC 282907 MCFADDIN 1062 MCFADDIN (5500) ALLEGIANT RESOURCES, LLC 207118 MCFADDIN -A- 7 MCFADDIN, NORTH (4800 GAS) AMERICO ENERGY RESOURCES, LLC 142292 MCFADDIN -A- 12 C MCFADDIN, NW. (2090) AMERICO ENERGY RESOURCES, LLC 057966 MCFADDIN -A- 12 T MCFADDIN, NW. (6050) AMERICO ENERGY RESOURCES, LLC 057967 MCFADDIN -A- 24 E MCFADDIN, NORTH (4800 GAS) AMERICO ENERGY RESOURCES, LLC 085113 MCFADDIN -A- 31 MCFADDIN, NW. (2090) AMERICO ENERGY RESOURCES, LLC 058234 MCFADDIN -A- 44 MCFADDIN, NW. (2000) AMERICO ENERGY RESOURCES, LLC 099021 MCFADDIN -A- 61 MCFADDIN, N. W. (4800) AMERICO ENERGY RESOURCES, LLC 145091 MCFADDIN -A- 64 MCFADDIN, NORTH (5400) AMERICO ENERGY RESOURCES, LLC 151960 MCFADDIN -A- 65 MCFADDIN, NORTH (5350) AMERICO ENERGY RESOURCES, LLC 160255 MCFADDIN -A- 66 MCFADDIN, NORTH (5040) AMERICO ENERGY RESOURCES, LLC 162223 MCFADDIN -A- 67 MCFADDIN, NORTH (3750) AMERICO ENERGY RESOURCES, LLC 173466 MCFADDIN -A- 69 MCFADDIN, NW. (4950) AMERICO ENERGY RESOURCES, LLC 190412 MCFADDIN -A- 74 MCFADDIN, NORTH (5100) AMERICO ENERGY RESOURCES, LLC 261290 MCFADDIN -A- 78 MCFADDIN, NORTH (5300 -A-) AMERICO ENERGY RESOURCES, LLC 267054 MCFADDIN -A- A 58 MCFADDIN, NORTH (4200) AMERICO ENERGY RESOURCES, LLC 141507 MCFADDIN -A- A 72 MCFADDIN, NORTH (6100) AMERICO ENERGY RESOURCES, LLC 250049 MCFADDIN -A- A 73 MCFADDIN, NORTH (5040) AMERICO ENERGY RESOURCES, LLC 250603 MCFADDIN /B/ 4 KAY CREEK (1750) URBAN OIL & GAS GROUP, LLC 207757 MCFADDIN 'A' 1 KAY CREEK (1950) URBAN OIL & GAS GROUP, LLC 193221 MCFADDIN 'A' 17 KAY CREEK (1750) URBAN OIL & GAS GROUP, LLC 214445 MCFADDIN "A" 18 MCFADDIN (1800) URBAN OIL & GAS GROUP, LLC 163822 MCFADDIN "A" 29 MCFADDIN (1800) URBAN OIL & GAS GROUP, LLC 163820 MCFADDIN "A" 36 KAY CREEK (1750) URBAN OIL & GAS GROUP, LLC 218446 MCFADDIN "A" 36 F KAY CREEK (2950) URBAN OIL & GAS GROUP, LLC 132172 MCFADDIN "A" 43 MCFADDIN (2500) URBAN OIL & GAS GROUP, LLC 254988 MCFADDIN "A" 45 U KAY CREEK (2800) URBAN OIL & GAS GROUP, LLC 199976 MCFADDIN A A 71 MCFADDIN, NORTH (5600) AMERICO ENERGY RESOURCES, LLC 251460 MCFADDIN A- 46 KAY CREEK (1950) URBAN OIL & GAS GROUP, LLC 212443 MCFADDIN, A. M. A 13 MCFADDIN, EAST (5250) AMERICO ENERGY RESOURCES, LLC 171524 MCFADDIN, A. M. A 16 MCFADDIN, EAST (5250) AMERICO ENERGY RESOURCES, LLC 150399 MCFADDIN, A. M. A 18U MCFADDIN, EAST (5725) AMERICO ENERGY RESOURCES, LLC 171525 MCFADDIN, A. M. A 19 MCFADDIN, EAST (3700) AMERICO ENERGY RESOURCES, LLC 203415 MCFADDIN, A. M. A 27 MCFADDIN, EAST (5300) AMERICO ENERGY RESOURCES, LLC 094475 MCFADDIN, A. M. A 47 MCFADDIN, NORTH (5665) AMERICO ENERGY RESOURCES, LLC 111418 MCFADDIN, A. M. A 49 MCFADDIN, EAST (5250) AMERICO ENERGY RESOURCES, LLC 074621 MCFADDIN, A.M. A 9 MCFADDIN, EAST (5725) AMERICO ENERGY RESOURCES, LLC 113189 MCFADDIN, J. A. 45 KAY CREEK (2950) URBAN OIL & GAS GROUP, LLC 266057 MCFADDIN, J. A. 134 MCFADDIN (2200) ALLEGIANT RESOURCES, LLC 002719 MCFADDIN, J. A. -A- 59 MCFADDIN, NORTH (5100) AMERICO ENERGY RESOURCES, LLC 174677 MCFADDIN, J.A. A 44 KAY CREEK (2400) URBAN OIL & GAS GROUP, LLC 269479 MCFADDIN, J.A. A 44 T KAY CREEK (3500) URBAN OIL & GAS GROUP, LLC 198521 MCFALL-KERBY 5 RUDMAN, W. (LULING 6790) DAYLIGHT PETROLEUM LLC 213252 MCKAY 1 BEEVILLE, W. (HOCKLEY) HEADWATERS ENERGY PARTNERS, LLC 283475 MCKINNEY, J. E. 3 PETTUS, SE. (WILCOX 7650) MAGNUM PRODUCING, LP 164068 MCKINNEY, J. E. 5 PETTUS, S.E. (1360) MAGNUM PRODUCING, LP 182045 MCKINNEY, RICKI 1 THOMASTON (YEGUA 4800) CAMOIL, INC. 073103 MCLENDON, J. B. 1 BLOOMINGTON (GRETA STRINGER) TRANT, SAM 000927 MCMANUS SHALLOW UNIT 1 BALFOUR (YEGUA 2950) B D PRODUCTION CO., INC. 233577


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCMANUS UNIT 1 HOPE (WILCOX MASSIVE) B D PRODUCTION CO., INC. 229728 MCMANUS, C. B. ET AL 3A HOPE (VICKSBURG 3200) B D PRODUCTION CO., INC. 171262 MCMANUS, CARROLL 1 BRUSHY CREEK (WILCOX -S-1-11200) BUFFCO PRODUCTION INC. 166826 MCMULLEN OIL & ROYALTY 1 LABUS (EDWARDS, UPPER) OKY INVESTMENTS, INC. 126562 MCNEIL 1 DINERO, W. (WILCOX 13600) CBN OPERATING CORP. 172263 MCNEIL 4 DINERO, W. (WILCOX 13600) CBN OPERATING CORP. 180781 MCNEIL GAS UNIT 1 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 233952 MCNEILL 1A JACKSON RANCH (YEGUA 5250) SUE-ANN OPERATING, L.C. 206511 MCNEILL 2 DINERO, WEST (PETTUS) RODESSA OPERATING COMPANY 181975 MCNEILL 3 D PARKTEX (HOCKLEY, UPPER) DOUBLE PLAY OIL & GAS, INC 244747 MCNEILL G 2 DINERO, W. (YEGUA 5300) APEX ENERGY, INC. 258804 MCNEILL (BROOKS) 1 PARKTEX (HOCKLEY, UPPER) DOUBLE PLAY OIL & GAS, INC 272719 MCNEILL (BROOKS) B 1 PARKTEX (HOCKLEY, UPPER) DOUBLE PLAY OIL & GAS, INC 280617 MCNEILL C 1 DINERO, WEST (HOCKLEY) APEX ENERGY, INC. 212347 MCNEILL CATTLE CO. 1 NURSERY, SW. (3230) APEX ENERGY, INC. 255057 MCNEILL EAST 1 JACKSON RANCH (YEGUA 5250) APEX ENERGY, INC. 221415 MCNEILL F 2 JACKSON RANCH (YEGUA 5300) APEX ENERGY, INC. 225500 MCNEILL GAS UNIT NO 1 2 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 239424 MCNEILL H 1 PAISANO CREEK (YEGUA) DOUBLE PLAY OIL & GAS, INC 272361 MCNEILL H 2 PAISANO CREEK (YEGUA) DOUBLE PLAY OIL & GAS, INC 283280 MCNEILL UNIT 1 MCGOWN (PETTUS UPPER) DOUBLE PLAY OIL & GAS, INC 238793 MCNEILL WEST 1 PARKTEX (HOCKLEY, UPPER) DOUBLE PLAY OIL & GAS, INC 255104 MCNEILL WEST UNIT 1 JACKSON RANCH (YEGUA 5440) DOUBLE PLAY OIL & GAS, INC 277174 MCNEILL, ANNA MAY 1 MCNEILL (YEGUA 5800) DOUBLE PLAY OIL & GAS, INC 116318 MCNEILL, WADE 1B PAISANO CREEK, E. (3200) APEX ENERGY, INC. 242423 MCNEILL, WADE "A" 1 JACKSON RANCH (YEGUA 5250) DOUBLE PLAY OIL & GAS, INC 226426 MCSWEEN 101 1 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 257156 MEDIO RANCH 1 BLANCONIA (FRIO 5100) DYNAMIC PRODUCTION, INC. 284984 MEEK 2 ELMER KOLLE (BOB 3400) GAITHER PETROLEUM CORPORATION 217530 MEEK 2 ELMER KOLLE (SANDY 3500) GAITHER PETROLEUM CORPORATION 214886 MEEK 3 SALEM, EAST (2400) GAITHER PETROLEUM CORPORATION 214419 MEEK A 1 SALEM, S.E. (2400) GAITHER PETROLEUM CORPORATION 239477 MEEKS 1 WILDCAT PIONEER NATURAL RES. USA, INC. 224344 MEGHAN J 2 YOAKUM, N. (UPR. WILCOX) EVX MIDSTREAM PARTNERS II LLC 276278 MEIDER 1 BOYCE (BEDNORZ) RINCON PETROLEUM CORPORATION 217310 MEIDER 3 COQUAT (10500) PROLINE ENERGY RESOURCES INC 117175 MEIDER 101 COQUAT (SLICK) MAGNUM PRODUCING, LP 221008 MEIDER DEEP GAS UNIT 5 COQUAT (11,300) PROLINE ENERGY RESOURCES INC 217919 MEIDER G. U. 4 COQUAT (MEIDER A, DEEP) PROLINE ENERGY RESOURCES INC 204264 MEIDER G.U. 4 4 COQUAT (10500) PROLINE ENERGY RESOURCES INC 204265 MEIDER GAS UNIT 2 COQUAT (MEIDER A, DEEP) PROLINE ENERGY RESOURCES INC 115245 MEIDER GAS UNIT 2LT COQUAT (10500) PROLINE ENERGY RESOURCES INC 107419 MEIDER GAS UNIT 6 COQUAT (10500) PROLINE ENERGY RESOURCES INC 248906 MEIDER GAS UNIT 7A COQUAT (MEIDER A, DEEP) PROLINE ENERGY RESOURCES INC 209670 MEIDER SU 1 COQUAT (MEIDER A, DEEP) PROLINE ENERGY RESOURCES INC 208595 MEIDER SU 2 COQUAT (MASSIVE SERIES) PROLINE ENERGY RESOURCES INC 226481 MEIDER SU ET AL GAS UNIT 3 COQUAT (10500) PROLINE ENERGY RESOURCES INC 237957 MEINERT UNIT 1 VIENNA (FRIO 2850) WHITE TIGER PRODUCTION 274834 MELINDA 1 WEESATCHE, NE. (WILCOX) REMORA OPERATING, LLC 190826 MELNAR, FRED EST. UNIT 2 WORD (EDWARDS) FLETCHER OPERATING, LLC 100240 MELNAR, FRED ESTATE 1 WORD (EDWARDS) FLETCHER OPERATING, LLC 087617


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MELNAR, FRED ESTATE 4 WORD (EDWARDS) FLETCHER OPERATING, LLC 223240 MELNAR, FRED ESTATE 5 WORD (EDWARDS) FLETCHER OPERATING, LLC 220953 MELNAR, VICTOR 1 WORD,N(8300) FLETCHER OPERATING, LLC 154980 MENEFEE 7 TEXANA, NORTH (5850) SEQUOIA FOSSIL FUELS, INC. 112729 MENGERS, WILBER 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 160540 MENNING 1 FOSS-BROWN (WILCOX) MAGNUM PRODUCING, LP 245422 MENNING A-129 1 THE RAPTURE (MAGNOLIA) MAGNUM PRODUCING, LP 264004 MENSIK 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 265657 MENSIK 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268659 MENSIK 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271814 MENSIK 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273139 MENSIK 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272140 MERTZ GAS UNIT NO 2 4 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 231247 MERTZ GAS UNIT NO 2 9 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 249035 MERTZ GAS UNIT NO. 2 2 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 234184 METTING NEUTZLER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 259779 METTING NEUTZLER 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272186 METTING NEUTZLER 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271737 METTING NEUTZLER 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 273118 METTING NEUTZLER 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280879 METTING NEUTZLER 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280847 METTING NEUTZLER 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280848 METTING NEUTZLER 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280849 METTING NEUTZLER 01 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280880 METTING NEUTZLER 01 10H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280881 METTING NEUTZLER 01 11H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280910 METTING NEUTZLER 01 12H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 288654 METTING NEUTZLER 01 13H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 289875 METTING NEUTZLER 01 14H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 288626 METTING NEUTZLER 01 16H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 288563 METTING NEUTZLER 01 17H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280855 METTING NEUTZLER 01 18H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280957 METZ 1 WEESATCHE, WEST (MELROSE) JETCO EXPLORATION, INC. 113787 MEYER 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271438 MEYER, H. 1 MAYO (3600) EAST TEXAS PRODUCTION MGT. INC 150732 MEYER, OTTO 1 GANADO (3700) KWS OIL & GAS, LLC 151423 MICHAEL 1 COLOGNE (3890) AMPAK OIL COMPANY 242920 MICHAEL 2 COLOGNE (4700) AMPAK OIL COMPANY 240555 MICHAEL 3 COLOGNE (4040) AMPAK OIL COMPANY 240567 MICHOT, MRS. KATE B. 2 SHERIFF (F-2) TRINIDAD RESOURCES, LLC 077388 MIDWAY 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 170268 MIDWAY 2 TYNAN (3600) GREAT TEXAS CRUDE INC. 170974 MIDWAY 3 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 176657 MIGL MITCHELL 3 SPEAKS, SW. (MAGNOLIA) XTO ENERGY INC. 214568 MIGL-MITCHELL 1 SPEAKS, SW. (WILCOX -A-) XTO ENERGY INC. 254604 MIGL-MITCHELL 3 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 170015 MIGL-MITCHELL 4 SPEAKS, SW (MIDDLE WILCOX-CONS.) XTO ENERGY INC. 258263 MIGL-MITCHELL 4 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 170720 MIGL-MITCHELL 5 SPEAKS, SW. (MAGNOLIA) XTO ENERGY INC. 172630 MIGL-MITCHELL 6 SPEAKS, SW (MIDDLE WILCOX-CONS.) XTO ENERGY INC. 181491 MIGL-QUINN 1 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 186761


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MIGL-QUINN 2 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 166858 MIGL-QUINN 2A SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 173089 MIGL-QUINN 3A SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 174765 MIGL-QUINN 4 SPEAKS, SW. (SIMPSON) CONTANGO RESOURCES, INC. 184664 MIGL-QUINN 5 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 174113 MIGL-QUINN 9 SPEAKS, SW. (MAGNOLIA) CONTANGO RESOURCES, INC. 242924 MIGL-QUINN 9 SPEAKS, SW. (SIMPSON) CONTANGO RESOURCES, INC. 254732 MIGUELITA SCANIO 14 REFUGIO-FOX (6600) ACOCK/ANAQUA OPERATING CO., LP 269669 MIGUELITA SCANIO 17 REFUGIO-FOX (3300) ACOCK/ANAQUA OPERATING CO., LP 284790 MIGUELITA SCANIO 20 REFUGIO-FOX (6600) ACOCK/ANAQUA OPERATING CO., LP 244399 MIGUELITA SCANIO 22 TOM OCONNOR (6470) ACOCK/ANAQUA OPERATING CO., LP 282648 MIGUELITA SCANIO 31 REFUGIO-FOX (6450 STRINGER) ACOCK/ANAQUA OPERATING CO., LP 290745 MIGUELITA SCANIO 32 REFUGIO OLD (6200) ACOCK/ANAQUA OPERATING CO., LP 290877 MIGUELITA SCANIO 33 REFUGIO HYNES (6400) ACOCK/ANAQUA OPERATING CO., LP 282743 MIGUELITA SCANIO 36 REFUGIO OLD (6300) ACOCK/ANAQUA OPERATING CO., LP 281284 MIGURA 1 EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 252842 MIGURA A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 259772 MIGURA A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283193 MIGURA A 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283194 MIGURA B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266757 MIGURA B 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288711 MIGURA B - CASKEY B SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288559 MIGURA B - CASKEY B SA 2 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288290 MIGURA B - CASKEY B SA 3 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288527 MIGURA B - CASKEY B SA 4 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288308 MIGURA B - CASKEY B SA 5 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288306 MIGURA B - CASKEY B SA 6 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288307 MIGURA B - CASKEY B SA 7 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288366 MIGURA B - CASKEY B SA 8 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288309 MIGURA B - LANIK A SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288712 MIGURA B - LANIK A SA 2 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 288305 MIKE STAUSS 26 MAURBRO (CMV SAND) KD ENERGY, LLC 280647 MIKE STAUSS 26 MAURBRO (DINGER SAND) KD ENERGY, LLC 261788 MIKULENKA, V.L. OIL UNIT 1 U WORD, N (8050) CAPITAL STAR OIL & GAS, INC. 290047 MILAGROS RANCH 1 HEARD RANCH (4300) PALEO OIL COMPANY LLC 250755 MILAGROS RANCH 4 HEARD RANCH (4400) PALEO OIL COMPANY LLC 266613 MILAGROS RANCH Y 1 HEARD RANCH (3500) PALEO OIL COMPANY LLC 281293 MILLER 1 CAESAR (HOCKLEY 2170) TEXACAL, INC. 105834 MILLER 1 OAKVILLE (WILCOX CONS.) SOUTHERN RESOURCE COMPANY 223626 MILLER 001 PROVIDENT CITY (FRIO 3175) TMR EXPLORATION, INC. 282201 MILLER ALBRECHT UNIT 1 A MISSION VALLEY, WEST (MASSIVE-1) TRANSPACIFIC ENERGY, LLC 003428 MILLER-ALLEN GAS UNIT 1 PROVIDENT CITY (WILCOX 13000) HILCORP ENERGY COMPANY 289268 MILLER-ALLEN GAS UNIT 1 PROVIDENT CITY NE (LWR WX. CONS) HILCORP ENERGY COMPANY 184594 MILLER-THOMAS GAS UNIT 1 COTTONWOOD CREEK, S. (FRIO 3050) CASKIDS OPERATING COMPANY 251499 MILNER 1 HELEN GOHLKE, SW. (YEGUA CONS.) REMORA OPERATING, LLC 281833 MISSION VALLEY 1 MISSION VALLEY (10,220) MODERN EXPLORATION, INC. 261990 MITCHELL 2 MUDHILL (HOCKLEY) NOG PRODUCTION & OPERATING LLC 252149 MITCHELL, JOHN N. 2 L MISSION RIVER (6300) HIGH PLAINS GAS SYSTEMS, INC. 031072 MIXON 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 287513 MIXON UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260304 MIXON UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270237


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MIXON UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270245 MIXON 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266452 MIZE, R. N. 1 COLOGNE (2800) AMPAK OIL COMPANY 173228 MM BROOKING #3 3 SOUTHERN COMFORT (FRIO) CORUM OPERATING COMPANY, LLC 272724 MOBIL C-D-W.WESTON PSA 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287296 MOBIL UNIT A 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271425 MOBIL UNIT A 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271426 MOBIL UNIT A 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271428 MOBIL UNIT B 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270927 MOBIL UNIT B 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270565 MOBIL UNIT B 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278772 MOBIL UNIT B 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277283 MOBIL UNIT B 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277680 MOBIL UNIT B 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277681 MOBIL UNIT B AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 274682 MOBIL UNIT B AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 274688 MOBIL UNIT B AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289302 MOBIL UNIT B AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279744 MOBIL UNIT C 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269119 MOBIL UNIT C 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270485 MOBIL UNIT C 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276772 MOBIL UNIT C 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276773 MOBIL UNIT C 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276260 MOBIL UNIT C 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276072 MOBIL UNIT C 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276747 MOBIL UNIT D 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268748 MOBIL UNIT D 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274573 MOBIL UNIT D 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276774 MOBIL UNIT D 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278587 MOBIL UNIT D 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278717 MOBIL UNIT D 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278588 MOBIL UNIT D AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276396 MOBIL UNIT D AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276361 MOBIL UNIT D AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276367 MOBIL UNIT D AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280059 MOBIL UNIT D AC 5H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279864 MOBIL UNIT D AC 6H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279954 MOC A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268536 MOC B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268024 MOC C 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268019 MOCZYGEMBA, C.J.,UNIT 1 PANNA MARIA (EDWARDS) MAGNOLIA OIL & GAS OPERATING LLC 188111 MOCZYGEMBA, J. S. 1 PANNA MARIA (EDWARDS) GULFTEX ENERGY, LLC 033542 MOCZYGEMBA, R. J. NCT-2 5 PANNA MARIA (EDWARDS) ENERQUEST OPERATING L.L.C. 038971 MOLNOSKEY, VICTOR 1 MOULTON (JACKSON) SOUTHERN OIL & GAS CO, LTD. 072663 MOLSON 1 TIGER BEND (WILCOX) LGDC CORPORATION 221864 MONECKE, BERTHA 1 SPEARY (WILCOX 9500) P1 ENERGY, LLC 022964 MONSON 2 MONSON (QUEEN CITY) ARETE OPERATING COMPANY, LLC 222479 MONSON 4 MONSON (QUEEN CITY) ARETE OPERATING COMPANY, LLC 220900 MONSON UNIT 1H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287745 MONSON UNIT 2H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287746 MONSON UNIT 4H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287747


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MONSON UNIT 5H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287748 MONSON UNIT 9H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287749 MONTE VON ROSENBERG G. U. #1 11 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 175291 MONTEOLA GAS UNIT 1 WILDCAT REPSOL OIL & GAS USA, LLC 250648 MOODY RANCH 1 MOODY RANCH PITCHFORK OIL & GAS, INC. 066521 MOODY RANCH 1 MOODY RANCH (7300) PITCHFORK OIL & GAS, INC. 242152 MOORE-STAFFORD 1 MORALES, NORTH (WILCOX) ATLAS OPERATING LLC 254487 MORGAN UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 258278 MORGAN UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270279 MORGAN UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269192 MORGAN UNIT 501H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288026 MORGAN UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275972 MORGAN UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289741 MORGAN UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 288426 MORGAN UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 288436 MORGAN UNIT AC 6H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 283162 MORITZ, WILLIE H. GAS UNIT 1 MEYERSVILLE (MASSIVE I) MARWELL PETROLEUM LTD PARTNRSHIP 003171 MORRILL UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273131 MORRILL UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273135 MORRILL UNIT C 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273530 MORRIS 1 NORMANNA (HOCKLEY 3525) TARE RESOURCES, LLC 247498 MORROW GAS UNIT NO 1 1 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 246338 MORTON 2 WAYSIDE (FRIO 3700) VIPER S.W.D., LLC 257636 MOTL UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266816 MOTL UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266843 MOTT, JULIA GAS UNIT 1H YOAKUM (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 070281 MOTT, JULIA GAS UNIT #5 9 YOAKUM (WILCOX 7450) FOUNDATION ENERGY MANAGEMENT LLC 212209 MOTT, JULIA GAS UNIT NO.2A 2 YOAKUM (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 084420 MOTT, JULIA GAS UNIT 2A 6H YOAKUM (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 208887 MOUNTAIN VIEW RANCH 1H DE WITT (EAGLE FORD SHALE) ROSEWOOD RESOURCES, INC. 290849 MOY A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 269565 MOY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 264723 MOY UNIT A 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 279842 MRS FANNIE V W HEARD 68 GRETA (L-15) HILCORP ENERGY COMPANY 230684 MRS. FANNIE V. W. HEARD 39 GRETA (L-15) HILCORP ENERGY COMPANY 253334 MRS. FANNIE V. W. HEARD 4G GRETA (L-10) HILCORP ENERGY COMPANY 282652 MRS. FANNIE V. W. HEARD 4G GRETA (L-14 NORTH) HILCORP ENERGY COMPANY 281280 MRS. FANNIE V. W. HEARD 39 GRETA (L- 4) HILCORP ENERGY COMPANY 282409 MRS. FANNIE V. W. HEARD 57 TOM OCONNOR (5250) HILCORP ENERGY COMPANY 280797 MRS. FANNIE V. W. HEARD 73 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 263649 MRS. FANNIE V. W. HEARD 87 GRETA (L- 8) HILCORP ENERGY COMPANY 256512 MRS. FANNIE V. W. HEARD 92 GRETA (O-1-B) HILCORP ENERGY COMPANY 256514 MRS. FANNIE V. W. HEARD 99 GRETA (G-2) HILCORP ENERGY COMPANY 279959 MUECKE 1 BOYCE (HOCKLEY) ESTATE OF JAMES L. NELSON 143106 MUELLER 1 COLETTO CREEK (2100) PETRA OLEUM CORP. 269187 MUELLER 1 KEMPER, EAST (5650) EVEREST RESOURCE COMPANY 213269 MUELLER 1 KOERTH (WILCOX 11150) SHIDLER, MARK L., INC. 230779 MUELLER 2 KOERTH (WILCOX 11150) SHIDLER, MARK L., INC. 242786 MUELLER FAMILY 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 265507 MUELLER GAS UNIT 2 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 112256 MUELLER GAS UNIT 3 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 116315


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MUELLER GAS UNIT 4 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 153703 MUELLER GAS UNIT 5 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 161425 MUELLER GAS UNIT 6 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 164428 MUELLER GAS UNIT 7 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 212477 MUELLER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 265662 MUELLER, A. W. HEIRS 1-C GREEN LAKE, WEST (8850) TEXAS INDEPENDENT EXPLOR LTD. 175302 MUELLER, A.W. HEIRS 1-T GREEN LAKE, WEST (SHERIFF #3) TEXAS INDEPENDENT EXPLOR LTD. 138708 MUENICH 2 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 230767 MUENICH 3 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 231752 MUENICH 4 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 234214 MUIR C 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282356 MUIR D 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 262037 MUIR D 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 270725 MUIR D 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281945 MURPHY-FRANKE-FOSTER SA 12H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290748 MURPHY-SINCLAIR UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 267436 MURPHY-SINCLAIR UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270324 MURPHY-SINCLAIR UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274454 MURPHY-SINCLAIR UNIT 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277102 MURPHY-SINCLAIR UNIT 301H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277324 MURPHY-SINCLAIR UNIT 302H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281553 MURPHY-SINCLAIR UNIT 303H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281522 MURPHY-SINCLAIR UNIT 501H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277122 MURPHY-SINCLAIR UNIT 502H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281558 MURPHY-SINCLAIR UNIT 503H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281554 MURPHY-SINCLAIR UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 281710 MURPHY-SINCLAIR UNIT AC 8H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279605 MURPHY-SINCLAIR UNIT AC 9H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279201 MUSICK - LP BUTLER A SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286222 MUSICK - LP BUTLER A SA 2 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286223 MUSICK A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281942 MUSICK A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281941 MUSICK A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281937 MUSSELMAN 1 SAWFISH (EDWARDS) ENSIGN OPERATING LLC 233767 MUSSELMAN 1 WOLF DEN (10800 SAND) WHITE OAK OPERATING COMPANY LLC 231667 MUSSELMAN 5 SALEM (1900) B.P. PRODUCTIONS INC. 276040 MUSSELMAN C 1 SALEM, EAST (2600 MIOCENE) GAITHER PETROLEUM CORPORATION 231650 MUSSELMAN D 1 SALEM, EAST (2600 MIOCENE) GAITHER PETROLEUM CORPORATION 239400 MUSSELMAN GU 1 SALEM, S.E. (2930) GAITHER PETROLEUM CORPORATION 239397 MUSSELMAN RANCHES 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 262896 MUSSELMAN RANCHES, INC. 1 RAMBLER (MIGURA) BUFFCO PRODUCTION INC. 170612 MUSSELMAN RANCHES, INC. 2 WILDCAT DARTEX ENERGY CORPORATION 180655 MUSSELMAN RANCHES, INC. 2 WILDCAT DARTEX ENERGY CORPORATION 180656 MUSSELMAN RANCHES, INC. 2 RAMBLER (MIGURA) BUFFCO PRODUCTION INC. 174128 MUTCHLER-ROTH UNIT 2 TULETA, WEST (HOCKLEY 3100) INLAND OCEAN, INC. 216488 MVR WILCOX GAS UNIT 11 WORD (WILCOX, LOWER) CAPITAL STAR OIL & GAS, INC. 277806 MYRA KELLEY 04 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 260383 MYRA KELLEY 05 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268197 MYRA KELLEY 06 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267658 MYRA SUE KELLEY GAS UNIT NO 3 1 MORAY (EDWARDS) ENSIGN OPERATING LLC 236866 MYRA SUE KELLEY GAS UNIT NO 3 2 MORAY (EDWARDS) ENSIGN OPERATING LLC 243873


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MYRA SUE KELLEY GAS UNIT NO 3 4 MORAY (EDWARDS) ENSIGN OPERATING LLC 255162 MYRA SUE KELLEY GAS UNIT 3 3 MORAY (EDWARDS) ENSIGN OPERATING LLC 239213 N STEINMANN UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266815 N STEINMANN UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266818 N STEINMANN UNIT B 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290417 N STEINMANN UNIT B 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 290336 N. P. U. (SCARBOROUGH 3) 35 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 166831 N.P.C. GAS UNIT 1 PROVIDENT CITY (WILCOX 12,000) HILCORP ENERGY COMPANY 190261 N.P.U. (DROOMGOOLE 1) 47 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 228715 N.P.U. (RAY 98) 39 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 173609 N.P.U. (SCARBOROUGH 4) 49 TULSITA-WILCOX ( SLICK) FLETCHER OPERATING, LLC 233563 NANCE 9 PLACEDO, EAST (5200) IWR OPERATING, LLC 166158 NANCY STEWART 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 259861 NANCY STEWART 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269558 NANCY STEWART 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269551 NANCY STEWART 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269560 NATHO A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263734 NATHO B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 267091 NATHO B 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281854 NATHO B 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281947 NATHO B 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282139 NATHO B 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281962 NATHO B 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281913 NATHO B 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281961 NAVIDAD RIVER ET AL 1 WESTHOFF (COMBINED ASSOCIATED) PROGENIES OPERATING LLC 280430 NAVIDAD RIVER ET AL 5 WESTHOFF (COMBINED ASSOCIATED) PROGENIES OPERATING LLC 252924 NAVIDAD RIVER UNIT 2R WESTHOFF (COMBINED ASSOCIATED) PROGENIES OPERATING LLC 234220 NEIMANN, EMIL 9 BONNIE VIEW (4200 D-1) MISSION RIVER SYSTEMS, INC. 000943 NELLER GAS UNIT 1 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 250464 NELLER GAS UNIT 1 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 271164 NELLER GAS UNIT 1 C 1H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 282196 NELLER GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281532 NELLER GAS UNIT 1 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281754 NELLER GAS UNIT 1 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281507 NELLER GAS UNIT 1 D 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283728 NELLER-ELIZONDO (SA) D2 D 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284523 NELLER-ELIZONDO (SA) D3 D 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284566 NELLER-ELIZONDO-RUNGE 2 (SA) D4 D 4H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 288606 NELLER-ELIZONDO-RUNGE 2 (SA) D4 D 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288621 NELLER-ELIZONDO-RUNGE 2 (SA) D5 D 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288810 NELLER-RHODES TRUST (SA) A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 273126 NELLER-RUNGE 1-RUNGE 2 (SA) D7 D 7H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288561 NELLER-RUNGE 2 (SA) D6 D 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288458 NELSON 1 HOLZMARK (PETTUS) DOUBLE PLAY OIL & GAS, INC 290234 NELSON 2 CLAYTON (WILCOX 6875) INLAND OCEAN, INC. 241153 NELSON 4 CLAYTON (WILCOX 6875) INLAND OCEAN, INC. 234239 NELSON, C. S. 3 GEORGE WEST, WEST (9500) SANDEL OPERATING COMPANY 272720 NELSON, C. S. 4 LIMES (WILCOX 9500) SANDEL OPERATING COMPANY 094293 NELSON, C. S. 5 LIMES (WILCOX 9900) SANDEL OPERATING COMPANY 094294 NELSON, C. S. 6 LIMES (WILCOX F-1) SANDEL OPERATING COMPANY 208013 NELSON, C. S. 9 LIMES (WILCOX F-2) SANDEL OPERATING COMPANY 208131


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ NELSON, C. S. 11 GEORGE WEST, WEST (10430) SANDEL OPERATING COMPANY 174924 NELSON, C. S. 12 GEORGE WEST, WEST (10430) SANDEL OPERATING COMPANY 217590 NELSON, C. S. 8 GEORGE WEST, WEST (9500) SANDEL OPERATING COMPANY 152286 NELSON, C. S. TRUST ET AL 7 LIMES (WILCOX F-1) SANDEL OPERATING COMPANY 147165 NELSON, M. B. 1 GEORGE WEST, SOUTH (FRIO -N-) E. & R. OIL COMPANY 001706 NEUHAUS 1 A VIENNA (WILCOX, MIDDLE U) OVERTON PARK OIL & GAS LP 231359 NEUHAUS UNIT 2 WORD (5800) SULPHUR RIVER EXPLORATION, INC. 176025 NEUHAUS UNIT 2 C WORD, N. (7400) SULPHUR RIVER EXPLORATION, INC. 058374 NEUHAUS UNIT 3 WORD, N. (7550) SULPHUR RIVER EXPLORATION, INC. 283531 NEUHAUS UNIT 3 WORD, N. (7800) SULPHUR RIVER EXPLORATION, INC. 198943 NEUHAUS UNIT 4 WORD, N. (7800) SULPHUR RIVER EXPLORATION, INC. 286162 NEUHAUS-SANDRA 1 PROVIDENT CITY (WILCOX 9,500) TMR EXPLORATION, INC. 188882 NEUHAUS-SANDRA 2 PROVIDENT CITY (WILCOX A-1) TMR EXPLORATION, INC. 283499 NEUHAUS, E. A. 1 PROVIDENT CITY (WILCOX 8,600) TMR EXPLORATION, INC. 003808 NEUHAUS, E. T. 2 PROVIDENT CITY (WILCOX 13000) HILCORP ENERGY COMPANY 181921 NEUHAUS, E. T. 7 PROVIDENT CITY (WILCOX A-1) TMR EXPLORATION, INC. 101815 NEUHAUS, E.T. 1 PROVIDENT CITY NE (LWR WX. CONS) HILCORP ENERGY COMPANY 236103 NEUHAUS, E.T. 2 PROVIDENT CITY (WILCOX W-0) HILCORP ENERGY COMPANY 221330 NEUHAUS, E.T. 2 PROVIDENT CITY (WILCOX 11,900) HILCORP ENERGY COMPANY 286523 NEUHAUS, F. W. 1 PROVIDENT CITY (WILCOX 8,500) TMR EXPLORATION, INC. 003800 NEUHAUS, F. W. 2 PROVIDENT CITY (WILCOX 8,500) TMR EXPLORATION, INC. 003801 NEUHAUS, F. W. 3 PROVIDENT CITY (WILCOX 8,500) TMR EXPLORATION, INC. 003802 NEUHAUS, F. W. 3 PROVIDENT CITY (YEGUA L-2) TMR EXPLORATION, INC. 137493 NEUHAUS, F. W. 4 PROVIDENT CITY (YEGUA L-Z EAST) TMR EXPLORATION, INC. 161515 NEUHAUS, F. W. 6A PROVIDENT CITY (FRIO 3175) TMR EXPLORATION, INC. 188608 NEUHAUS, F. W. 11D PROVIDENT CITY (5800) TMR EXPLORATION, INC. 062062 NEUHAUS, F. W. 14 PROVIDENT CITY (FRIO 2610) TMR EXPLORATION, INC. 284258 NEUHAUS, F. W. 15 PROVIDENT CITY (YEGUA 5700) TMR EXPLORATION, INC. 283105 NEUHAUS, F.W. 3 PROVIDENT CITY (FRIO 3550) TMR EXPLORATION, INC. 278334 NEUHAUS, F.W. 6 L PROVIDENT CITY (YEGUA -M-) TMR EXPLORATION, INC. 290937 NEUHAUS, F.W. 7 PROVIDENT CITY (FRIO 3100) FIELDWOOD ONSHORE LLC 283917 NEUHAUS, F.W. 9 PROVIDENT CITY (FRIO 3100) TMR EXPLORATION, INC. 279198 NEUHAUS, F.W.. 2 PROVIDENT CITY (YEGUA -P-) TMR EXPLORATION, INC. 281447 NEW 4R JOHNSTONE (MIDDLE FRIO) BLUE WING ENERGY, INC. 281191 NEW-HENDERSON UNIT 1 MONT (WILCOX 10640) TRIO CONSULTING & MANAGEMENT,LLC 216104 NEWBERRY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266458 NEWTON GOHMERT 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 265688 NICHOLS A UNIT 2H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287815 NICHOLS A UNIT 11H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 288034 NICHOLS A UNIT 12H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 288076 NICHOLS GAS UNIT 1 1 PAWNEE (EDWARDS) REPSOL OIL & GAS USA, LLC 220257 NICHOLS 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269684 NICHOLS, J. T. GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 265493 NICHOLSON 2 CLAYTON (MACKHANK 1) GREATER SOONER HOLDINGS, INC. 219495 NICHOLSON, DOROTHY 1 CLAYTON (SLICK 6450) GREATER SOONER HOLDINGS, INC. 149858 NICHOLSON, DOROTHY 4 CLAYTON, NE. (QUEEN CITY -C-) GREATER SOONER HOLDINGS, INC. 163136 NIEMANN 2 LA ROSA (4800) GARDNER, J. B. 061358 NIEMANN, EMIL 3 BONNIE VIEW (4250) MISSION RIVER SYSTEMS, INC. 127314 NIEMANN, EMIL 4 BONNIE VIEW (F-3950) MISSION RIVER SYSTEMS, INC. 127313 NITSCH UNIT 'B' 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270335 NITSCH UNIT 'B' 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270336


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ NITSCH UNIT A 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264924 NITSCH UNIT A 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286204 NITSCH UNIT A 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286205 NITSCH UNIT A 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276798 NITSCH UNIT A 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277549 NITSCH UNIT A 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276797 NITSCH UNIT A 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276796 NITSCH UNIT A 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278187 NITSCH UNIT A 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278348 NITSCH UNIT A 14H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284510 NITSCH UNIT A 15H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284533 NITSCH UNIT A 16H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284534 NITSCH UNIT A 310H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278188 NITSCH UNIT A 313H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278190 NITSCH UNIT A 509H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278192 NITSCH UNIT A 512H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278347 NITSCH UNIT A-B PSA 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286577 NITSCH UNIT B 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 282616 NITSCH UNIT B 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283534 NOLEN, H. 1 SECLUSION (COCKFIELD 6100) CENIZA PETROLEUM, INC. 145765 NONA BERRY DAVIS 60 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 233241 NORDHEIM GAS UNIT 2H KAWITT (EDWARDS) ATLAS OPERATING LLC 247342 NORRELL 2 WEESATCHE,WEST (HOLT SAND 10880) KEBO OIL & GAS, INC. 106627 NORTH PROVIDENT CITY G.U. 2 PROVIDENT CITY (WILCOX 13000) HILCORP ENERGY COMPANY 255266 NPU ( MUDD, O A -A1) 26 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 158906 NPU ( PORTER -3) 18 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 041006 NPU ( PORTER-1) 3 TULSITA-WILCOX ( LULING) FLETCHER OPERATING, LLC 004536 NPU ( RAY -1 ) 12 TULSITA-WILCOX ( SLICK) FLETCHER OPERATING, LLC 004545 NPU ( RAY -10U ) 28 U TULSITA-WILCOX ( 7,600 LOWER) FLETCHER OPERATING, LLC 074988 NPU ( RAY -5) 22 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 086170 NPU ( RAY -96 ) 34 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 163134 NPU ( UNION-PORTER -1 ) 27 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 160795 NPU (H&D-NIEHAUS -1) 25 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 158812 NPU (MUDD, O J -1 ) 16 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 004525 NPU (MUDD, O.A. 3) 43 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 220915 NPU (MUDD, O.A. 3) 43 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 221089 NPU (MUDD, O.J. - 2) 38 TULSITA-WILCOX (7,900) FLETCHER OPERATING, LLC 219850 NPU (MUDD, OJ-2) 38 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 136127 NPU (O A MUDD 4A) 46 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 246204 NPU (O A MUDD 6A) 59 TULSITA-WILCOX (7,900) FLETCHER OPERATING, LLC 233417 NPU (O A MUDD 7-A) 60 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 233790 NPU (O A MUDD 8A) 64 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 253940 NPU (O A MUDD 9A) 65 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 253952 NPU (O.A. MUDD 5-A) 55 TULSITA-WILCOX (7,900) FLETCHER OPERATING, LLC 257879 NPU (O.J. MUDD 3) 61 TULSITA-WILCOX (8000) FLETCHER OPERATING, LLC 257803 NPU (PORTER -4L) 10-L TULSITA-WILCOX ( LULING) FLETCHER OPERATING, LLC 146750 NPU (PORTER -4U ) 10-U TULSITA-WILCOX ( 7,700) FLETCHER OPERATING, LLC 073338 NPU (PORTER 5) 2 TULSITA-WILCOX ( 7,600 LOWER) FLETCHER OPERATING, LLC 287878 NPU (PORTER 6) 42 TULSITA-WILCOX ( MASSIVE) FLETCHER OPERATING, LLC 287757 NPU (PORTER-5) 2 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 145440 NPU (RAY -10L ) 28 L TULSITA-WILCOX ( 7,700) FLETCHER OPERATING, LLC 074989


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ NPU (RAY -12 ) 23 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 139059 NPU (RAY -4 ) 21 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 084417 NPU (RAY -7 ) 32 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 033901 NPU (RAY 106) 41 C TULSITA-WILCOX ( MASSIVE) FLETCHER OPERATING, LLC 219831 NPU (RAY 106-T) 41 T TULSITA-WILCOX ( 7,700) FLETCHER OPERATING, LLC 200187 NPU (RAY 109) 44 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 220892 NPU (RAY 110) 45 TULSITA-WILCOX ( SLICK) FLETCHER OPERATING, LLC 229713 NPU (RAY 112) 56 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 232873 NPU (RAY 114) 51 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 231199 NPU (RAY 118) 53 TULSITA-WILCOX ( 7,600 LOWER) FLETCHER OPERATING, LLC 234178 NPU (RAY 119) 54 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 244745 NPU (RAY 121) 57 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 233422 NPU (ROCKHILL SMITH 1) 62 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 233780 NPU (SCARBOROUGH -1) 19 TULSITA-WILCOX ( SLICK) FLETCHER OPERATING, LLC 266675 NPU (SCARBOROUGH -2) 9 TULSITA-WILCOX ( MACKHANK) FLETCHER OPERATING, LLC 262819 NPU (SMITH-2) 37 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 130383 NPU (SPIELHAGEN -A1 ) 20 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 076384 NPU (SPIELHAGEN -A2) 8 TULSITA-WILCOX ( LULING) FLETCHER OPERATING, LLC 063426 NPU (UNION-RAY -59 ) 24 TULSITA-WILCOX ( 6800 REKLAW) FLETCHER OPERATING, LLC 143376 NPU (UNION-SPIELHAGAN-1) 6 TULSITA-WILCOX ( LULING) FLETCHER OPERATING, LLC 039719 NSE KLIMITCHEK MEGAN 1 SPEAKS (3100) NORTH SHORE ENERGY, L.L.C. 240169 NSE KLIMITCHEK MEGAN 2 HOPE (JACOBS 2980) NORTH SHORE ENERGY, L.L.C. 235953 NSE O'BRIEN 2 BLANCONIA (FOX SAND) NORTH SHORE ENERGY, L.L.C. 234648 NSE O'BRIEN 5 BLANCONIA (4960) NORTH SHORE ENERGY, L.L.C. 247294 NSE-HARKINS 1 SARCO CREEK, WEST (4650) NORTH SHORE ENERGY, L.L.C. 256872 O. A. LAMPLEY GAS UNIT #1 14 DRY HOLLOW (ROCHELLE SAND) MERIT ENERGY COMPANY 188640 O. A. LAMPLEY GU 1 1 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281319 O. A. LAMPLEY GU 1 6 DRY HOLLOW (11024) MERIT ENERGY COMPANY 281642 O. A. LAMPLEY GU 1 6 DRY HOLLOW (WILCOX LAMPLEY) MERIT ENERGY COMPANY 281672 O. A. LAMPLEY GU 1 6 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281362 O. A. LAMPLEY GU 1 7 DRY HOLLOW (11024) MERIT ENERGY COMPANY 281618 O. A. LAMPLEY GU 1 7 DRY HOLLOW (ROCHELLE SAND) MERIT ENERGY COMPANY 173951 O. A. LAMPLEY GU 1 7 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281586 O. A. LAMPLEY GU 1 8 DRY HOLLOW (ROCHELLE SAND) MERIT ENERGY COMPANY 175280 O. A. LAMPLEY GU 1 8 DRY HOLLOW (UPPER ROCHELLE) MERIT ENERGY COMPANY 218985 O. A. LAMPLEY GU 1 9 DRY HOLLOW (WILCOX LAMPLEY) MERIT ENERGY COMPANY 277235 O. A. LAMPLEY GU 1 11 DRY HOLLOW (11024) MERIT ENERGY COMPANY 281464 O. A. LAMPLEY GU 1 11 DRY HOLLOW (WILCOX LAMPLEY) MERIT ENERGY COMPANY 281602 O. A. LAMPLEY GU 1 11 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281379 O. A. LAMPLEY GU 1 12 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 278670 O. A. LAMPLEY GU 1 13 DRY HOLLOW (UPPER ROCHELLE) MERIT ENERGY COMPANY 178752 O. A. LAMPLEY GU 1 13 DRY HOLLOW (WILCOX DAGG, NE) MERIT ENERGY COMPANY 237961 O. A. LAMPLEY GU 1 16 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281631 O. M. LANDER UNIT 2 U HEYSER (8100) AURORA RESOURCES CORPORATION 117867 O. TERRY 1 HOPE, NE. (2700) STRATCO OPERATING CO., INC. 215874 O.A. LAMPLEY GU 1 5 DRY HOLLOW (ROCHELLE SAND) MERIT ENERGY COMPANY 171822 O.A. LAMPLEY GU 1 5 DRY HOLLOW (UPPER ROCHELLE) MERIT ENERGY COMPANY 176842 O.A. LAMPLEY GU 1 9 DRY HOLLOW (11024) MERIT ENERGY COMPANY 279477 O.M. LANDER UNIT 2L HEYSER (8200) AURORA RESOURCES CORPORATION 142816 O' BRIEN 1 HEARD RANCH (FRIO Z) PALEO OIL COMPANY LLC 256909 O'BRIEN 1 BLANCONIA (FOX SAND) ANDERSON OIL LTD. 249213


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ O'BRIEN 1 BLANCONIA (2850) ANDERSON OIL LTD. 234332 O'BRIEN 1 MURPHY SISTERS (FRIO 3600) GARRISON LTD. 233330 O'BRIEN 2 BLANCONIA (4450) ANDERSON OIL LTD. 240501 O'BRIEN 3 BLANCONIA (3650) ANDERSON OIL LTD. 267661 O'BRIEN - MORRIS UNIT 1 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 260688 O'BRIEN - MORRIS UNIT 1 MEDIO CREEK (3800) T-C OIL COMPANY, LLC 245437 O'BRIEN - MORRIS UNIT 1 MEDIO CREEK (4100) T-C OIL COMPANY, LLC 254723 O'BRIEN -C- UNIT 1 BLANCONIA (3700) T-C OIL COMPANY, LLC 265198 O'BRIEN -C- UNIT 1 MEDIO CREEK (3350) T-C OIL COMPANY, LLC 269205 O'BRIEN -C- UNIT 1 MEDIO CREEK (3900) T-C OIL COMPANY, LLC 259773 O'BRIEN "J&L", J. M. 1J GRETA (O-4) GRETA OPERATING COMPANY LLC 133722 O'BRIEN B (S), J.M. 2 GRETA (L- 5) GRETA OPERATING COMPANY LLC 143399 O'BRIEN RANCH 1A MURPHY SISTERS (FRIO 3600) WELDER EXPLORATION & PROD., INC. 225506 O'BRIEN RANCH 1B MURPHY SISTERS (FRIO 3600) WELDER EXPLORATION & PROD., INC. 225504 O'BRIEN, J J 2 REFUGIO OLD (4800) EAGLEFORD OPERATING, INC. 247288 O'BRIEN, J. B. "B" 4 I GRETA (O-1) GRETA OPERATING COMPANY LLC 144527 O'BRIEN, J. J. 6 GRETA (L-10) GRETA OPERATING COMPANY LLC 177556 O'BRIEN, J. J. C 4 GRETA (5800) GRETA OPERATING COMPANY LLC 190694 O'BRIEN, J. J. A 2 GRETA (L- 3) GRETA OPERATING COMPANY LLC 147922 O'BRIEN, J. J. A 6 GRETA (L- 6 WEST) GRETA OPERATING COMPANY LLC 156924 O'BRIEN, J. J. A 9 GRETA (F-1 WEST) GRETA OPERATING COMPANY LLC 196518 O'BRIEN, J. J. A (S) 7 GRETA (O-1) GRETA OPERATING COMPANY LLC 144838 O'BRIEN, J. J. A(S) 6 GRETA (L- 8) GRETA OPERATING COMPANY LLC 159371 O'BRIEN, J. J. C (P) 2 GRETA (L- 5) GRETA OPERATING COMPANY LLC 137754 O'BRIEN, J. M. D 6 GRETA (O-3) GRETA OPERATING COMPANY LLC 193265 O'BRIEN, J. M. -A- 3 GRETA (C-1) GRETA OPERATING COMPANY LLC 175300 O'BRIEN, J. M. 'A' 10 GRETA (L- 7 SOUTH) DEWBRE PETROLEUM CORPORATION 171612 O'BRIEN, J. M. 'A' G 3 GRETA (C-5) DEWBRE PETROLEUM CORPORATION 175296 O'BRIEN, J. M. 'B' 2 GRETA (C-5) GRETA OPERATING COMPANY LLC 161080 O'BRIEN, J. M. "B" 214 GRETA, DEEP (5360) DORCHESTER OPERATING COMPANY LLC 192311 O'BRIEN, J. M. "E" 6 GRETA, W. (6300) GRETA OPERATING COMPANY LLC 231786 O'BRIEN, J. M. C 7 GRETA (L- 5) GRETA OPERATING COMPANY LLC 157868 O'BRIEN, J.J. A 1 REFUGIO OLD EAGLEFORD OPERATING, INC. 135473 O'BRIEN, J.J. "B" 2 GRETA (2460) GRETA OPERATING COMPANY LLC 137761 O'BRIEN, J.J. A (S) 8 GRETA (L- 9) GRETA OPERATING COMPANY LLC 157058 O'BRIEN, J.M. 312A GRETA (C-2) DORCHESTER OPERATING COMPANY LLC 256500 O'BRIEN, J.M. -A- 6 C GRETA (O-1) GRETA OPERATING COMPANY LLC 101469 O'BRIEN, J.M. -A- 6 T GRETA (O-2 NORTH) GRETA OPERATING COMPANY LLC 101491 O'BRIEN, J.M. A 7 GRETA (O-3) GRETA OPERATING COMPANY LLC 147933 O'BRIEN, J.M. A-2 2 GRETA (L- 2) GRETA OPERATING COMPANY LLC 141804 O'BRIEN, J.M. B 6-T GRETA (O-3) GRETA OPERATING COMPANY LLC 154152 O'BRIEN, J.M. C 1 GRETA (L- 5) GRETA OPERATING COMPANY LLC 141944 O'BRIEN, J.M. D 2 GRETA (O-5) GRETA OPERATING COMPANY LLC 147384 O'BRIEN, J.M. D&E "D" 3 GRETA (L- 6 WEST) GRETA OPERATING COMPANY LLC 141066 O'BRIEN, J.M. D&E "E" 1 GRETA (L-15) GRETA OPERATING COMPANY LLC 155985 O'BRIEN, J.M. J&L "L" 1 GRETA (L- 5) GRETA OPERATING COMPANY LLC 141695 O'CONNER-MILLER 3 BRIGHT FALCON (YEGUA 10,300) ATLAS OPERATING LLC 272693 O'CONNER, THOMAS 1 GRETA (L- 5) GRETA OPERATING COMPANY LLC 135280 O'CONNOR 5 WILDCAT MIDWAY DRILLING CO. 282793 O'CONNOR 14 HUFF (5500) T-C OIL COMPANY, LLC 212404 O'CONNOR 35D HUFF (2400) T-C OIL COMPANY, LLC 152158


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ O'CONNOR 52 HUFF (3600) T-C OIL COMPANY, LLC 239247 O'CONNOR 60 HUFF (2800) T-C OIL COMPANY, LLC 214396 O'CONNOR 60 T-C (5600) T-C OIL COMPANY, LLC 160794 O'CONNOR 64 HUFF (4400) T-C OIL COMPANY, LLC 165388 O'CONNOR 65 HUFF ( 403) T-C OIL COMPANY, LLC 143839 O'CONNOR 69 HUFF (5250) T-C OIL COMPANY, LLC 258061 O'CONNOR 74 HUFF ( 403) T-C OIL COMPANY, LLC 214301 O'CONNOR 76X HUFF (2200) T-C OIL COMPANY, LLC 230793 O'CONNOR 78 HUFF (2800) T-C OIL COMPANY, LLC 210746 O'CONNOR 80 HUFF (5000) T-C OIL COMPANY, LLC 288532 O'CONNOR -H- H 34 HUFF (2600) T-C OIL COMPANY, LLC 288592 O'CONNOR -H- H 34 HUFF (2800) T-C OIL COMPANY, LLC 257660 O'CONNOR "H" H 17 HUFF (3000) T-C OIL COMPANY, LLC 170750 O'CONNOR "H" H 28 MCFADDIN (3900) T-C OIL COMPANY, LLC 149137 O'CONNOR RANCH 1 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 208141 O'CONNOR RANCH 14 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 212468 O'CONNOR RANCH 15 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 212439 O'CONNOR RANCH 16 OCONNOR RANCH, S. (VICKSBURG) PROLINE ENERGY RESOURCES INC 237221 O'CONNOR RANCH 22 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 250444 O'CONNOR RANCH 23 OCONNOR RANCH, S. (VICKSBURG) PROLINE ENERGY RESOURCES INC 219796 O'CONNOR RANCH 27 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 214373 O'CONNOR RANCH 28 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 216256 O'CONNOR RANCH 35 OLD BUZZARD (WILCOX) PROLINE ENERGY RESOURCES INC 238785 O'CONNOR RANCH 37 AUSTIN, W. (UPPER WILCOX B) PROLINE ENERGY RESOURCES INC 241858 O'CONNOR RANCH 38 OLD BUZZARD (WILCOX) PROLINE ENERGY RESOURCES INC 232108 O'CONNOR RANCH 41 OLD BUZZARD (WILCOX) PROLINE ENERGY RESOURCES INC 232105 O'CONNOR RANCH "A" 1-L OCONNOR RANCH, S. (VICKSBURG) PROLINE ENERGY RESOURCES INC 177564 O'CONNOR RANCH "A" 1-U OCONNOR RANCH, S. (FRIO 1) PROLINE ENERGY RESOURCES INC 177560 O'CONNOR RANCH "B" 1 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 180382 O'CONNOR RANCH "B" 2 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 180241 O'CONNOR RANCH "B" 5 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 181495 O'CONNOR RANCH "C" 2 OCONNOR RANCH, S. (VICKSBURG) PROLINE ENERGY RESOURCES INC 186988 O'CONNOR RANCH "R" 3 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 180882 O'CONNOR RANCH "T" 1 OCONNOR RANCH (FRIO CONS.) PROLINE ENERGY RESOURCES INC 180921 O'CONNOR-MILLER 1 EL TORO MAX (AY-3) GAITHER PETROLEUM CORPORATION 165213 O'CONNOR-MILLER 3 EL TORO MAX (AY-3) ATLAS OPERATING LLC 169316 O'CONNOR, DENNIS ET AL -D- 7 TERRELL POINT (2800) T-C OIL COMPANY, LLC 179819 O'CONNOR, DENNIS ET AL -L- L 15 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 220087 O'CONNOR, DENNIS ET AL -L- L 25 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 223481 O'CONNOR, DENNIS ET AL -L- L 32 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 198753 O'CONNOR, DENNIS ET AL -L- L 38 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 225270 O'CONNOR, DENNIS ET AL -L- L 56 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 221948 O'CONNOR, DENNIS ET AL -L- L 59 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 225472 O'CONNOR, DENNIS ET AL -L- L 75 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 221943 O'CONNOR, DENNIS ET AL -N- N 13 HUFF (3250) T-C OIL COMPANY, LLC 200149 O'CONNOR, DENNIS ET AL -N- N 14 HUFF (3400) T-C OIL COMPANY, LLC 197260 O'CONNOR, DENNIS ET AL "D" D 6 TERRELL POINT (3600) T-C OIL COMPANY, LLC 097113 O'CONNOR, DENNIS ETAL "L" 25 LAKE PASTURE (H-484) T-C OIL COMPANY, LLC 134535 O'CONNOR, M. V. ESTATE "C" 6 TRAIN WRECK (6000 SD.) CHARRO OPERATING, L.L.C. 224771 O'CONNOR, THOMAS (AMOCO) 2 GRETA (5270) GRETA OPERATING COMPANY LLC 205584 O'CONNOR, THOMAS -A- 13 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 180991


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ O'CONNOR, THOMAS -A- 34 TOM O'CONNOR (4830) HILCORP ENERGY COMPANY 157803 O'CONNOR, THOMAS -A- 42 TOM O'CONNOR (4840) HILCORP ENERGY COMPANY 223466 O'CONNOR, THOMAS -A- 43 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 183195 O'CONNOR, THOMAS -A- 45 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 139323 O'CONNOR, THOMAS -A- 47 TOM OCONNOR (5425 SAND) HILCORP ENERGY COMPANY 142081 O'CONNOR, THOMAS -A- 74 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 143490 O'CONNOR, THOMAS -A- 92 TOM O'CONNOR(4900) HILCORP ENERGY COMPANY 137686 O'CONNOR, THOMAS -A- 113 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 161310 O'CONNOR, THOMAS -C- 10 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 179384 O'CONNOR, THOMAS -C- 11 TOM O'CONNOR (5410) HILCORP ENERGY COMPANY 180778 O'CONNOR, THOMAS -C- 13 TOM OCONNOR (5100, EAST) HILCORP ENERGY COMPANY 194119 O'CONNOR, THOMAS -C- 32 TOM OCONNOR (5440) HILCORP ENERGY COMPANY 286807 O'CONNOR, THOMAS -C- 40 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 166198 O'CONNOR, THOMAS -C- 42-L TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 188439 O'CONNOR, THOMAS -C- 92 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 270822 O'CONNOR, THOMAS -D- 9 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 198788 O'CONNOR, THOMAS 'A' 19 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 188900 O'CONNOR, THOMAS 'B' 13 MARY ELLEN OCONNOR (FT-5) HILCORP ENERGY COMPANY 179411 O'CONNOR, THOMAS 'B' 44D MARY ELLEN OCONNOR (H-117) HILCORP ENERGY COMPANY 175309 O'CONNOR, THOMAS 'C' 58 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 176352 O'CONNOR, THOMAS 'C' 60 GRETA (L-15) HILCORP ENERGY COMPANY 161263 O'CONNOR, THOMAS "A" 24 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 192125 O'CONNOR, THOMAS "A" 32 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 187875 O'CONNOR, THOMAS "A" 65 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 269860 O'CONNOR, THOMAS "B" 16 MARY ELLEN OCONNOR (H-117) HILCORP ENERGY COMPANY 146764 O'CONNOR, THOMAS "B" 35 MARY ELLEN OCONNOR (FQ-40 SAND) HILCORP ENERGY COMPANY 228252 O'CONNOR, THOMAS "C" 4G TOM OCONNOR (4200) HILCORP ENERGY COMPANY 267316 O'CONNOR, THOMAS "C" 5G TOM O'CONNOR (3400) HILCORP ENERGY COMPANY 229080 O'CONNOR, THOMAS "C" 6G TOM OCONNOR HILCORP ENERGY COMPANY 229789 O'CONNOR, THOMAS "C" 6G TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 182617 O'CONNOR, THOMAS "C" 19 GRETA (L-10) HILCORP ENERGY COMPANY 234338 O'CONNOR, THOMAS "C" 42-U TOM OCONNOR (4200) HILCORP ENERGY COMPANY 188183 O'CONNOR, THOMAS "C" 51 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 223041 O'CONNOR, THOMAS "C" 68 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 219427 O'CONNOR, TOM 2 GRETA (L- 2) GRETA OPERATING COMPANY LLC 144641 O'CONNOR, TOM 4 GRETA (O-4) DORCHESTER OPERATING COMPANY LLC 277046 O'CONNOR, TOM 11 GRETA (L- 3) GRETA OPERATING COMPANY LLC 149039 O'CONNOR, TOM 13 GRETA (O-7) GRETA OPERATING COMPANY LLC 147972 O'CONNOR, TOM (5800 SD) FLD UNIT J102 TOM OCONNOR (5800) HILCORP ENERGY COMPANY 107705 O'NEAL GAS UNIT 3 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 142061 O'NEAL GAS UNIT 4 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 162214 O'NEAL GAS UNIT 5 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 180567 O'NEAL GAS UNIT 6 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 184041 O'NEAL GAS UNIT 7 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 185262 O'NEAL GAS UNIT 8 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 198032 O'NEAL GAS UNIT 9 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 207950 O'NEAL GAS UNIT 11 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 221106 O'NEAL GAS UNIT 12 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 227348 O'NEAL GAS UNIT 13 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 232512 O'NEAL GAS UNIT 14 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 236912 OAKVILLE-HINTON G.U. 1 OAKVILLE (WILCOX CONS.) WELDER EXPLORATION & PROD., INC. 247162


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ OBRIEN, J. J. 201 REFUGIO OLD EMERALD OIL & GAS LC 225547 OBRIEN, J. J. -B- 1 B BLANCONIA (4700) JTB OIL COMPANY, INC. 033086 OBRIEN, J. J. -B- 3 GRETA (L- 8) GRETA OPERATING COMPANY LLC 055319 OBRIEN, J. M. 302 GRETA (O-4) DORCHESTER OPERATING COMPANY LLC 118851 OBRIEN, J. M. 308 GRETA (O-4) DORCHESTER OPERATING COMPANY LLC 116281 OBRIEN, J. M. -A- 5 C GRETA (O-7) GRETA OPERATING COMPANY LLC 048272 OBRIEN, J. M. -A- 5 T GRETA (C-1) GRETA OPERATING COMPANY LLC 048271 OBRIEN, J. M. -A- 8 C GRETA (900) GRETA OPERATING COMPANY LLC 085208 OBRIEN, J. M. -A- 8 T GRETA (1250) GRETA OPERATING COMPANY LLC 085256 OBRIEN, J. M. -B- 4 E GRETA (O-4) GRETA OPERATING COMPANY LLC 055578 OBRIEN, J. M. -B- 5 C GRETA (900) GRETA OPERATING COMPANY LLC 082794 OBRIEN, J. M. -B- 5 T GRETA (1250) GRETA OPERATING COMPANY LLC 082795 OBRIEN, J. M. -B- 11 C GRETA (900) GRETA OPERATING COMPANY LLC 099595 OBRIEN, J. M. -B- 11 T GRETA (1300) GRETA OPERATING COMPANY LLC 085106 OBRIEN, J. M. -B- 202 GRETA (C-5) DORCHESTER OPERATING COMPANY LLC 108307 OBRIEN, J. M. -B- B 4 G GRETA (C-1) GRETA OPERATING COMPANY LLC 074461 OBRIEN, J. M. -D- 3 D GRETA (L- 3) GRETA OPERATING COMPANY LLC 052765 OBRIEN, J. M. -D- 3 H GRETA (L- 5) GRETA OPERATING COMPANY LLC 052766 OBRIEN, J. M. D & E 5 GRETA, DEEP (5600) GRETA OPERATING COMPANY LLC 106112 OBRIEN, J. M. D & E E 3 D GRETA (L- 5) GRETA OPERATING COMPANY LLC 053584 OBRIEN, J. M., D & E E 3 F GRETA (L- 3) GRETA OPERATING COMPANY LLC 049777 OBRIEN, J. M., D & E E 3 H GRETA (L-15) GRETA OPERATING COMPANY LLC 038088 OBRIEN, J.M. -H- 3 GRETA (L- 8) GRETA OPERATING COMPANY LLC 132945 OBRIEN,J.M.-B-(GAS PROD.AREA-B-) 6 C GRETA (L-13) GRETA OPERATING COMPANY LLC 074593 OCONNOR 58 HUFF ( 403) T-C OIL COMPANY, LLC 124700 OCONNOR 61 MCFADDIN (5250) T-C OIL COMPANY, LLC 119997 OCONNOR -H- H 5 HUFF (4400) T-C OIL COMPANY, LLC 068268 OCONNOR, DENNIS ET AL -D- D 7 TERRELL POINT (CATAHOULA) T-C OIL COMPANY, LLC 045179 OCONNOR, DENNIS ET AL -L- L 33 LAKE PASTURE (M-295) T-C OIL COMPANY, LLC 058160 OCONNOR, M. E. 21 MARY ELLEN OCONNOR (FS-1) DOLPHIN PETROLEUM, LP 045119 OCONNOR, MARY ELLEN 28 U MARY ELLEN OCONNOR (FQ-25) DOLPHIN PETROLEUM, LP 049774 OCONNOR, MARY ELLEN 32 MARY ELLEN OCONNOR (D-1) DOLPHIN PETROLEUM, LP 079074 OCONNOR, MARY ELLEN 53 MARY ELLEN OCONNOR (5000) DOLPHIN PETROLEUM, LP 130673 OCONNOR, THOMAS -A- 112 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 116554 OCONNOR, TOM 5 GRETA (F-2 WEST) GRETA OPERATING COMPANY LLC 001924 ODAM 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 221544 OEHLKE A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282005 OEHLKE A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281900 OEHLKE A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282006 OEHLKE A 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282007 OEHLKE A 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281861 OEHLKE A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281915 OEHLKE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265235 OELSCHLEGEL GU 1 TYNAN (FRIO 3700, LO.) FAUCETTE, E. W. 083970 OETKEN 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266477 OETKEN 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280402 OETKEN 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280398 OETKEN 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280399 OETKEN 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280422 OETKEN 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280373 OETKEN 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280374


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ OETKEN 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280375 OHRT-ALBRECHT 1 MISSION VALLEY (10,220) UNION GAS OPERATING COMPANY 181425 OHRT-HEINOLD 1 MISSION VALLEY (10,220) UNION GAS OPERATING COMPANY 180862 OLIVER A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 258092 OLIVER D 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264536 OLSON-BAKER UNIT 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 250483 OLSON-BAKER UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269840 OLSON-BAKER UNIT 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271130 OLSON-ESSE UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266116 OLSON-ESSE UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269502 ONEAL GAS UNIT 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 003545 ONEAL GAS UNIT 2 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 063496 OPIELA 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270647 OREILLY, ELLA A 1 PAPALOTE (4600) WESTERN OIL FIELDS, INC. 003519 ORMAND A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263749 ORO NEGRO UNIT 2 1 DE WITT (EAGLE FORD SHALE) GEOSOUTHERN ENERGY CORPORATION 265524 ORR 1 SLIVA (2100) WELDER EXPLORATION & PROD., INC. 272901 OVERBY 2E PAWNEE (EDWARDS) ENSIGN OPERATING LLC 237660 OVERPASS 1 EL TORO MAX (AY-3) SUE-ANN OPERATING, L.C. 205594 OWENS UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263546 P CRAIN UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268806 P. CRAIN UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266287 P. CRAIN UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284352 P. CRAIN UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284351 P. CRAIN UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284289 P. CRAIN UNIT A 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284348 P. CRAIN UNIT A 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284347 P. CRAIN UNIT A 101 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284288 P. FRISBIE A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266782 P. FRISBIE B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265671 P. FRISBIE B 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281916 P. FRISBIE B 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281917 P. FRISBIE B 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281918 PAGAN 1 MIKESKA, NW. (7800) PROLINE ENERGY RESOURCES INC 238783 PAGAN, JOHN S. 1 MIKESKA (WILCOX) ROYKO OIL COMPANY 146363 PAGE 1 COSDEN, WEST (VICKSBURG, UPPER) WELDER EXPLORATION & PROD., INC. 264407 PAGE UNIT #2 1 COSDEN, WEST (MACKHANK) WELDER EXPLORATION & PROD., INC. 277206 PAGE/MINERAL UNIT 5 MINERAL (MASSIVE) RINCON PETROLEUM CORPORATION 126926 PAGE, C. E. 13 COSDEN, W. (HOCKLEY LOWER) DARTEX ENERGY CORPORATION 118289 PAGE, GLADYS 1 COSDEN (Z-12) WELDER EXPLORATION & PROD., INC. 099255 PAGEL, C. C. 1 WILDCAT CORENERGY OPERATING GROUP, LLC 177187 PALRANG, D. A. GAS UNIT 1 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 086431 PALRANG, D. A. GAS UNIT 2 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 105749 PALRANG, D. A. GAS UNIT 3 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 169137 PALRANG, D. A. GAS UNIT 4 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 173087 PANCHO UNIT 1 HELEN GOHLKE (MIOCENE 1450) DAYLIGHT PETROLEUM LLC 257081 PANTEL, NELSON 1 WEBER, S. (1170) HOCHHEIM ENTERPRISES INC. 129974 PARGMANN 1 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 192052 PARKER 2 JACKSON RANCH (YEGUA 5400) WELDER EXPLORATION & PROD., INC. 167419 PARKER FRISBIE 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266455 PARKER, EMILY H. 1 L DINERO, W. (5600) CBN OPERATING CORP. 082790


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ PARKER, EMILY H. 1 U DINERO, W. (4300) CBN OPERATING CORP. 082789 PARKS 2 FANNIN, SOUTH (TOBY) A & R RESOURCES 151587 PARMA 1 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 235537 PARMA 2 FIFTEEN MILE CREEK (WILCOX) UNIT PETROLEUM COMPANY 241972 PATINO UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265042 PATINO UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 259794 PATTESON ESTATE 3 WILDCAT MAGNUM PRODUCING, LP 213445 PATTESON RANCH 1 PATTESON RANCH (MACKHANK) MAGNUM PRODUCING, LP 098372 PATTON 2 SAINT ARMO (MACKHANK) VENTEX OPERATING CORP. 228250 PATTON UNIT 3 SAINT ARMO (WILCOX, LOWER STEVE) VENTEX OPERATING CORP. 258747 PAVLISKA 1 CAMPBELL CREEK (8450) MASCOT OIL COMPANY 126368 PAWALEK, M. M. 1 YOUGEEN, S. (FRIO 3650) OMEGA ENERGY, LLC 113313 PAWLIK 1 KENDALL (9250 WILCOX) HURD ENTERPRISES, LTD. 290935 PAWLIK GODFREY GAS UNIT #2 3 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 229452 PAWLIK GODFREY GAS UNIT NO. 2 4 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 245424 PAWLIK GODFREY GAS UNIT NO. 2 5 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 249409 PAWLIK GODFREY GAS UNIT NO. 2 6 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 257927 PAWLIK GU 1 2 FANT (WILCOX 10000) SANDEL OPERATING COMPANY 177635 PAWLIK GU 1 2 FANT, S. (WILCOX 10760) SANDEL OPERATING COMPANY 098582 PAWLIK GU 1 3 FANT (WILCOX 10000) SANDEL OPERATING COMPANY 223259 PAWLIK GU1 3 FANT, S. (WILCOX 11300) SANDEL OPERATING COMPANY 176660 PAWLIK-GODFREY GU 1 MAXINE, EAST (8700) FAULCONER, VERNON E., INC. 151516 PEARCE 1 HOPE (WILCOX MASSIVE) WANDOO ENERGY, LLC 224620 PEDERNALES 1 COTTONWOOD CREEK,E. (MIDDLE WX.) MARWELL PETROLEUM LTD PARTNRSHIP 193766 PEDERNALES UNIT 3 COTTONWOOD CREEK,E. (MIDDLE WX.) MARWELL PETROLEUM LTD PARTNRSHIP 193769 PEDRAZA 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268513 PEEBLES 1 GEORGE WEST, WEST (10430) SANDEL OPERATING COMPANY 200556 PEEBLES A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267089 PEEBLES A 3H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 269014 PEEBLES A 4H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 290979 PEEBLES A 5H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 290996 PEEBLES A 6H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 290997 PEEBLES A 9H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 291013 PEREIRA 2 DIAL (HOCKLEY 3380) OFFSPRING WELL SALVAGE 104466 PEREIRA, F. R. 4 HORDES CREEK (LULING) PEGASUS PETROLEUM CORPORATION 043221 PEREZ 1 COLETTO CREEK, SOUTH (3000) AMPAK OIL COMPANY 213341 PEREZ 2 COLOGNE (1050) AMPAK OIL COMPANY 175418 PEREZ 3 COLETTO CREEK, SOUTH (4000) AMPAK OIL COMPANY 281216 PEREZ 4 COLETTO CREEK, SOUTH (4400) AMPAK OIL COMPANY 281218 PEREZ, FELIPE 2 HOCKLEY (3535) BRITANCO, L.L.C. 184232 PERIERA 1 HORDES CREEK, SOUTH (1950) BLUE WING ENERGY, INC. 256285 PERSON, OTHA D. 8 PERSON (EDWARDS) MAGNOLIA OIL & GAS OPERATING LLC 216675 PETERS COLE 1 EL TORO MAX (AY-3) ATLAS OPERATING LLC 268204 PETERS/SKLAR 1 EL TORO MAX (AY-3) ATLAS OPERATING LLC 169129 PETERSON 1 ALDRETE AND CARBAJAL (WILCOX) REMORA OPERATING, LLC 200077 PETERSON 1 COSDEN (Z-12) VISION OIL AND GAS LLC 240418 PETERSON 1 GARDEN (MIDDLE WILCOX) VISION OIL AND GAS LLC 226243 PETERSON 2 ALDRETE AND CARBAJAL (WILCOX) REMORA OPERATING, LLC 229958 PETTER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267037 PETTUS 51 CABEZA CREEK (8060) NOG PRODUCTION & OPERATING LLC 192182 PETTUS 55 CABEZA CREEK (PETTUS) NOG PRODUCTION & OPERATING LLC 153911


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ PETTUS HEIRS 3 RIVERDALE (MASSIVE FIRST-WILCOX) MAGNUM PRODUCING, LP 184558 PETTUS HEIRS 5 MUY BUENO (9800) MAGNUM PRODUCING, LP 198005 PETTUS UNIT 12 CABEZA CREEK (YEGUA) NOG PRODUCTION & OPERATING LLC 076496 PETTUS UNIT 13 CABEZA CREEK (REKLAW, LO.) NOG PRODUCTION & OPERATING LLC 001075 PETTUS UNIT 21 CABEZA CREEK (YEGUA) NOG PRODUCTION & OPERATING LLC 077405 PETTUS UNIT 22 CABEZA CREEK (COOK MTN.) NOG PRODUCTION & OPERATING LLC 071798 PETTUS UNIT 32 CABEZA CREEK (REKLAW) NOG PRODUCTION & OPERATING LLC 190661 PETTUS UNIT 39 CABEZA CREEK (WILCOX MACKANK) NOG PRODUCTION & OPERATING LLC 142482 PETTUS UNIT 42 CABEZA CREEK (COOK MTN., W) NOG PRODUCTION & OPERATING LLC 074258 PETTUS UNIT 44 CABEZA CREEK (PETTUS) NOG PRODUCTION & OPERATING LLC 220096 PETTUS UNIT 52 CABEZA CREEK (REKLAW) NOG PRODUCTION & OPERATING LLC 190450 PETTUS UNIT 54 CABEZA CREEK (REKLAW, LO.) NOG PRODUCTION & OPERATING LLC 149071 PETTUS UNIT 54 CABEZA CREEK (YEGUA) NOG PRODUCTION & OPERATING LLC 187979 PETTUS, R. M. ET AL 1 HORDES CREEK (WILCOX CONS.) TEXAS GULF PRODUCTION CO. LLC 237077 PETTUS, W. W. HEIRS 1 MUY BUENO (WILCOX J) MAGNUM PRODUCING, LP 172874 PETTUS, W. W. HEIRS 1 MUY BUENO (9800) MAGNUM PRODUCING, LP 180461 PFEIFER GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 265491 PFEIFER UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289126 PHILLIP A. MCKINNEY GAS UNIT 1 MCKINNEY (WILCOX) MAGNUM PRODUCING, LP 253815 PHILLIPPE GU1 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 278530 PHILLIPPE GU1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277671 PHILLIPPE GU1 A 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 278586 PHILLIPPE GU1 A 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277732 PHILLIPPE GU1 A 5H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 277809 PHILLIPPE GU1 A 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277734 PHILLIPPE GU1 A 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277783 PHILLIPPE GU1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266852 PHILLIPPE GU1 B 4H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 282270 PHILLIPPE GU1 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281492 PHILLIPPE GU1 B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281288 PHILLIPPE GU1 B 6H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 282190 PHILLIPPE GU1 B 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281721 PHILLIPS 1 MEYERSVILLE, E. (3220) ARCH OIL & GAS, LLC 145255 PHOENIX 1 YORKTOWN (WILCOX 10100) PHOENIX MIDSTREAM, LLC 270957 PICKERING AND ROOS 42 PLACEDO (4000 CATAHOULA) ALLEGIANT RESOURCES, LLC 167091 PICKETT GAS UNIT 1 1 SAN MARCOS (AUSTIN CHALK) ENSIGN OPERATING LLC 259567 PIEGSA, P. 1 VICTORIA, DEEP (CATAHOULA) MONTEREY OIL COMPANY 004591 PILGREEN 2ST SPEAKS, SW. (WILCOX 9560) CONTANGO RESOURCES, INC. 192593 PILGREEN 3 SPEAKS, SW. (MAGNOLIA) CONTANGO RESOURCES, INC. 171218 PILGREEN 3 SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 177125 PILGREEN 4R SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 164727 PILGREEN 5 SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 174660 PILGREEN 6 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 173023 PILGREEN 7 SPEAKS, SW. (MAGNOLIA) CONTANGO RESOURCES, INC. 176547 PILGREEN 8 SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 199470 PILGREEN 9 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 186752 PILGREEN 9 SPEAKS, SW. (SIMPSON) CONTANGO RESOURCES, INC. 181133 PILGREEN 11 SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 182525 PILGREEN 13 SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 191829 PILGREEN 14 SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 179361 PILGREEN 15 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 251964


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ PINSON SLAUGHTER UNIT 3 SPEARY (ROEDER 8800) REPSOL OIL & GAS USA, LLC 217968 PINSON SLAUGHTER UNIT 4 LYONS (4TH ROEDER) REPSOL OIL & GAS USA, LLC 214868 PITTMAN 1 WEESATCHE, SOUTH (FRIO 1200) COASTLINE EXPLORATION, INC. 209888 PITTMAN 1A WEESATCHE, SOUTH (WILCOX 9150) MIDSTATES CORPORATION 135289 PITTMAN 2 POWDER RIVER (CONSOLIDATED) COASTLINE EXPLORATION, INC. 244421 PITTMAN 3 GOLIAD, WEST (WILCOX) LIGHTNING OIL COMPANY 254336 PITTS 3 SPEAKS, S. (LOWER WILCOX) MERIT ENERGY COMPANY 198091 PLACEDO RANCH 1 PLACEDO (6400) ACOCK/ANAQUA OPERATING CO., LP 248810 PLACEDO RANCH 2 PLACEDO (5770) ACOCK/ANAQUA OPERATING CO., LP 253238 PLACEDO RANCH 5 PLACEDO (5880) ACOCK/ANAQUA OPERATING CO., LP 262399 PLACEDO RANCH 7 PLACEDO, EAST (5960) ACOCK/ANAQUA OPERATING CO., LP 269520 PLOEGER, LESLIE 1 BORCHERS DEEP (BUSHEL) XTO ENERGY INC. 178549 PLOMERO RANCH 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 256501 PLOMERO RANCH 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259018 PLOMERO RANCH 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268755 PMT UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265354 POEHLER 3 POEHLER (COOK MT 5130) ESTATE OF JAMES L. NELSON 168386 POETTER 1 CHRISTMAS (12300) FAULCONER, VERNON E., INC. 247291 POGUE UNIT A 9DC SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 287231 POGUE UNIT A G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266273 POHL, O. A. 1 SPEAKS, SW. (FRIO) HORNE, RANSOM, JR. 061422 POHL,H. A. 2 WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 088965 POHLER A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 268030 POKLUDA A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286100 POKLUDA A - BYERLY A SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286098 POKLUDA A - BYERLY A SA 2 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286099 POKLUDA A - BYERLY A SA 3 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286322 POKLUDA A - RAYES A (AW) 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 261095 POPE 1 HOPE (MIOCENE 2730) HYDROCARBON OPERATING, INC. 287485 PORCHE 3 BRIGHT FALCON (YEGUA 9600) DECKER OPERATING CO., L.L.C. 177660 POST 1 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 187209 POST 2 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 200362 POST 3 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 205898 POST 4 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 209472 POSTEL 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267757 POTH UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 274460 POWDERHORN CO. 12 POWDERHORN, SE. (MIOCENE C) BEP OPERATING, LLC 045235 POWDERHORN RANCH 18 POWDERHORN (2) BEP OPERATING, LLC 141105 POWELL, GENTRY 1 MESCALERO (WILCOX J SAND) B.P. PRODUCTIONS INC. 234181 POWELL, GENTRY T. -A- 3 HORDES CREEK (4870) NOG PRODUCTION & OPERATING LLC 101605 POWER, PHIL 10 REFUGIO OLD (V-3) EAGLEFORD OPERATING, INC. 037517 POWERS 3 REFUGIO OLD (5600) EAGLEFORD OPERATING, INC. 003960 POWERS, JAMES 1 GANADO, WEST (5200) ALLEGIANT RESOURCES, LLC 155075 POZZI UNIT 1 COLETTO CREEK, SOUTH (4000 FRIO) KALER ENERGY CORP. 283115 PRASEK 139 1 DOLAN (LULING SAND) TIDEWATER MINERALS CORPORATION 198382 PREISS, ARLIS 2 FANNIN, NORTH (3180) IPR ENERGY PARTNERS, LLC 147627 PRESSLEY, EDMONIA 12 CORDELE W. (4270 BECKY) CORDELE DEVELOPMENT CORPORATION 151370 PRESSLEY, EDMONIA ESTATE 1 CORDELE, SE. (3050 CATAHOULA) CORDELE DEVELOPMENT CORPORATION 001399 PRESSLY 1 B CORDELE, SE. (3050 CATAHOULA) CORDELE DEVELOPMENT CORPORATION 069693 PRESSLY, EDMONIA 14 CORDELE, EAST (2900) CORDELE DEVELOPMENT CORPORATION 234524 PRESSLY, EDMONIA 14 CORDELE W. (4270 BECKY) CORDELE DEVELOPMENT CORPORATION 226842


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ PREWITT 2 CONSOLIDATED (WILCOX 10500) KEBO OIL & GAS, INC. 177512 PREWITT 3A WEESATCHE, NE. (HOLT FB A) EVEREST RESOURCE COMPANY 205331 PREWITT, DONALD F. ET. UX. 1 WEESATCHE, SOUTH (WILCOX) EVEREST RESOURCE COMPANY 150036 PRIBYL 10 COLETTO CREEK (2350) PETRA OLEUM CORP. 199964 PRIBYL 12 COLETTO CREEK (2300) PETRA OLEUM CORP. 257736 PRICE, J. 1 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 203386 PRICE, J. 2 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 216100 PRIDGEN ET AL 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 249182 PRIDGEN ET AL A-690 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 248707 PRIESS, A. 2 FANNIN, NORTH (3750) KTC OIL ENTERPRISES, LLC 141226 PROVIDENT CITY G.U. 15 PROVIDENT CITY (WILCOX 11,900) HILCORP ENERGY COMPANY 256520 PROVIDENT CITY G.U. 16 PROVIDENT CITY NE (LWR WX. CONS) HILCORP ENERGY COMPANY 231135 PROVIDENT CITY GAS UNIT 1 PROVIDENT CITY (WILCOX 11,500) HILCORP ENERGY COMPANY 220696 PROVIDENT CITY GAS UNIT 5 PROVIDENT CITY (WILCOX 8,600) TMR EXPLORATION, INC. 003809 PROVIDENT CITY GAS UNIT 6 PROVIDENT CITY (WILCOX 8,600) TMR EXPLORATION, INC. 003810 PROVIDENT CITY UNIT 1 PROVIDENT CITY (WILCOX 8,600) TMR EXPLORATION, INC. 003812 PROVIDENT MINERALS G.U. 1 PROVIDENT CITY (WILCOX 7) HILCORP ENERGY COMPANY 198439 PROVIDENT MINERALS GAS UNIT 2 PROVIDENT CITY (WILCOX 13700) HILCORP ENERGY COMPANY 163829 PROVIDENT MINERALS GU 2 PROVIDENT CITY (WILCOX 13000) HILCORP ENERGY COMPANY 280478 PUCKETT 1 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 223476 PULLIN UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266490 PULLIN UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271527 PULLIN UNIT B 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288906 PULLIN UNIT B 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288813 PULLIN UNIT B 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288814 PULLIN UNIT B 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288815 PULLIN UNIT B 7 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288825 PULLIN UNIT B 8 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288905 PUSTEJOVSKY 1 PANNA MARIA (EDWARDS) BLACKBRUSH O & G, LLC 130286 PUTNAM GAS UNIT 1 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 209859 PYLE, H. B. 4 PROVIDENT CITY (FRIO 2980) TMR EXPLORATION, INC. 178253 PYLE, WILLIAM 1 ATKINSON (KLINGEMAN) ESTATE OF JAMES L. NELSON 083147 QUAIL RIDGE/STATE UNIT 3906 LAVACA BAY (F-46) NEUMIN PRODUCTION COMPANY 275993 QVS 1D OAKVILLE (QUEEN CITY 5350) KEY ENERGY SERVICES, LLC 198249 R BORCHARDT UNIT A 2 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 268564 R BORCHARDT UNIT C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264315 R. BORCHARDT UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266269 R. BORCHARDT UNIT B 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 280729 R. BORCHARDT UNIT B 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 280730 R. BORCHARDT UNIT B 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 280857 R. GREEN 1 WARMSLEY (VAUGHN) FLETCHER OPERATING, LLC 264785 R. RUHMANN GAS UNIT 2-E 1 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 112637 R. RUHMANN GAS UNIT 2-E 2 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 213720 R. S. I. 2 WOODSBORO (4900) KEBO OIL & GAS, INC. 272660 R.D.F. 1 PROVIDENT CITY (FRIO -C-) HILCORP ENERGY COMPANY 290099 RABE GAS UNIT 1 NORMANNA (CONSOLIDATED) HYDROCARBON OPERATING, INC. 167216 RAGSDALE UNIT A 3 VIENNA (FRIO 3000) MOOSE OPERATING CO., INC. 147725 RAINOSEK 1 WORD, N. (EDWARDS) TRIO CONSULTING & MANAGEMENT,LLC 099888 RAMSEY 1 ALBRECHT (REKLAW) ESTATE OF JAMES L. NELSON 031580 RAMSEY 1 MARSHALL (MIDDLE WILCOX) BUFFCO PRODUCTION INC. 191190 RAMSEY B 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 195501


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ RAMSEY, GRACE 2A MCKEE (PETTUS) 2 D OIL & GAS LLC 143368 RANCHO GRANDE TRUST NO. 1 AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 268211 RANCHO GRANDE TRUST UNIT NO. 1 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 261448 RANCHO SALADO 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259786 RANCHO SALADO 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 288572 RANCHO SALADO EAST UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266280 RANCHO SALADO EAST UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 279612 RANDOW GAS UNIT #1 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 089718 RANDOW GAS UNIT #1 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 095647 RANDOW, H. C. GAS UNIT NO. 1 3 WORD (WILCOX, LOWER) CAPITAL STAR OIL & GAS, INC. 275678 RANDOW, H. C. GAS UNIT NO. 1 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 121519 RANEY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 260384 RAPIDO 1 ERNIE BAKER (PECAN GAP) OKY INVESTMENTS, INC. 177622 RAPP 1 FREEMAN (PETTUS 4600) DEWBRE PETROLEUM CORPORATION 232252 RATH 1 ARNECKEVILLE (HILLER 10900) KENNE EXPLORATION, INC. 124492 RATHKAMP UNIT 1H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276090 RATHKAMP UNIT 2H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 271614 RATHKAMP UNIT 3H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 275166 RATHKAMP UNIT 4H DE WITT (EAGLE FORD SHALE) TEAL OPERATING, LLC 276304 RATHKAMP, AUGUST 1 C SPEARY (ROEDER 9100) OKIE OPERATING COMPANY, LTD. 031995 RATHKAMP, AUGUST 1 T SPEARY (WILCOX 9500) OKIE OPERATING COMPANY, LTD. 022970 RATLIFF 1R MAYO (5460) PITCHFORK OIL & GAS, INC. 150131 RATLIFF 2 MAYO (5655) PITCHFORK OIL & GAS, INC. 158292 RATLIFF, GENE -C- 4 MAYO (5300 FRIO) PITCHFORK OIL & GAS, INC. 063894 RAU 1 BRANDT (PETTUS-CM CONS.) UNIT PETROLEUM COMPANY 239361 RAU 1 WESER (RECKLAW 7560) ESTATE OF JAMES L. NELSON 139306 RAU, CHARLES 9 PROVIDENT CITY, NE (3050) TMR EXPLORATION, INC. 207948 RAY 111 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 228874 RAY 124 TULSITA-WILCOX (MWC) FLETCHER OPERATING, LLC 232140 RAY, G. A. 91 PETTUS (8950) FLETCHER OPERATING, LLC 095430 RAY, GEORGE 1 PETTUS, E. (REKLAW) PRIDE ENERGY COMPANY 132744 RAY, GEORGE 2-C PETTUS, E. (LULING) PRIDE ENERGY COMPANY 141620 RAY, GEORGE 2-T PETTUS, E. (MACKHANK) PRIDE ENERGY COMPANY 141137 RAY, GEORGE 3 PETTUS, E. (LULING) PRIDE ENERGY COMPANY 142398 RAY, GEORGE 4LT PETTUS, E. (MACKHANK) PRIDE ENERGY COMPANY 144386 RAY, GEORGE 4UT PETTUS, E. (THIRD LULING) PRIDE ENERGY COMPANY 144369 RAY, GEORGE 5 PETTUS, E. (A-2 WILCOX) PRIDE ENERGY COMPANY 144763 RAY, GEORGE 6 PETTUS, E. (THIRD LULING) PRIDE ENERGY COMPANY 145643 RAY, GEORGE A 103 D KERR (REKLAW) FLETCHER OPERATING, LLC 207110 RAY, GEORGE A. 1 RAY SYDSON ENERGY, INC. 121232 RAY, GEORGE A. 2 RAY SYDSON ENERGY, INC. 131576 RAY, GEORGE A. 79 KERR (REKLAW) FLETCHER OPERATING, LLC 055776 RAY, GEORGE A. 89 KERR (REKLAW) FLETCHER OPERATING, LLC 137563 RAY, GEORGE A. 93 KERR (7600) FLETCHER OPERATING, LLC 153123 RAY, GEORGE A. 99 D TULSITA-WILCOX ( SLICK) FLETCHER OPERATING, LLC 220989 RAY, GEORGE A. 99 F KERR (LULING) FLETCHER OPERATING, LLC 219741 RAY, GEORGE A. 99-D KERR (8200) FLETCHER OPERATING, LLC 181054 RAY, GEORGE A. 99-F KERR (MASSIVE) FLETCHER OPERATING, LLC 181073 RAY, GEORGE A. 100-D KERR (MASSIVE) FLETCHER OPERATING, LLC 180248 RAY, GEORGE A. 100-F KERR (7910) FLETCHER OPERATING, LLC 180476 RAY, GEORGE A. 101 KERR (LULING) FLETCHER OPERATING, LLC 183627


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ RAY, GEORGE A. 103 F TULSITA-WILCOX ( MACKHANK) FLETCHER OPERATING, LLC 221626 RAY, GEORGE A. 104 KERR (LULING) FLETCHER OPERATING, LLC 185398 RAY, GEORGE A. 104 KERR (7910) FLETCHER OPERATING, LLC 221274 RAY, GEORGE A. 108 TULSITA-WILCOX ( SLICK) FLETCHER OPERATING, LLC 210454 RAY, GEORGE A. ET UX 2 PEYTON (YEGUA) THIRD COAST ENERGY, INC. 175939 RAY, J. W. JR. 1 J. W. RAY (2000) DELEON PARTNERS, LTD. 082495 RAYES A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 263754 RAYES A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285740 RAYES A - POKLUDA A SA 1 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285656 RAYES A - POKLUDA A SA 2 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285657 RAYES A - POKLUDA A SA 3 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285704 RAYES A - POKLUDA A SA 4 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285664 RAYES A - POKLUDA A SA 5 5H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285885 RAYES A - POKLUDA A SA 6 6H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285658 RAYES A - POKLUDA A SA 7 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285659 RAYES A - POKLUDA A SA 8 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 285886 REA, W. L. 1 REFUGIO OLD (1750) JETGAS COMPANY 030933 REA, W. L. 4 REFUGIO HEARD (4500) MISSION RIVER SYSTEMS, INC. 003912 REAGAN GAS UNIT 1 TEXAM (WILCOX 7600) DOGWOOD OPERATING COMPANY, INC. 207892 REAGAN, L. A. 1 OAKVILLE, E. (WILCOX 9400) FOURTH FLOOR OPERATING LLC 105760 REAGAN, L. A. 1 TEXAM (QUEEN CITY) WEEK-END OIL COMPANY 082124 REAGAN, L. A. 3 OAKVILLE-WILCOX (SLICK) ORIGIN PRODUCTION GROUP LLC 083541 REAGAN, ROBERT ET AL 5T OAKVILLE (1550) JJRS INVESTMENTS INC. 153095 REAGAN, ROBERT H. 7 OAKVILLE-WILCOX (LULING) TT OPERATING, LLC 147008 REAGAN, ROBERT H. ET AL 9 OAKVILLE-WILCOX (LULING) TT OPERATING, LLC 147114 REAGAN, ROBERT H. ETAL 5 C OAKVILLE, SOUTH (QUEEN CITY) TT OPERATING, LLC 127915 REAMY 1 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 192051 RED BARON A 1 EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 290133 RED BARON B 2 EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 290129 RED BARON C 3 EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 290131 RED BARON D 4 EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 290130 RED BARON E 5 EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 290132 RED BARON F 6 EAGLEVILLE (EAGLE FORD-2) VERDUN OIL & GAS LLC 290127 RED WOLF SW 1 1SW YOAKUM (6400) MINES POWER, LLC 265498 REED, D. M. 2 CABEZA CREEK, S. (SLICK WILCOX) AURORA RESOURCES CORPORATION 001092 REED, S. H. 1 CABEZA CREEK, SOUTH (M. W. 8300) PEARL, BILL H. PRODUCTIONS, INC. 043780 REED, S. H. 3 CABEZA CREEK, SOUTH (PETTUS) PEARL, BILL H. PRODUCTIONS, INC. 172384 REED, S. H. 3 CABEZA CREEK, S. (YEGUA 4747) PEARL, BILL H. PRODUCTIONS, INC. 147496 REED, T. M. 1 CABEZA CREEK, S. (RECKLAW 7700) NOG PRODUCTION & OPERATING LLC 061265 REEVES, C. -A- 1 COLOGNE (1600) KIRKPATRICK, JOHN OIL LLC 130285 REEVES, C. "A" 2 COLOGNE (2870) KIRKPATRICK, JOHN OIL LLC 153645 REGMUND FAMILY TRUST GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 262069 REGMUND FAMILY TRUST GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 285786 REGMUND FAMILY TRUST GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 285836 REGMUND FAMILY TRUST GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268683 REGMUND GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 260243 REGMUND GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268100 REGMUND GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 276663 REGMUND GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277035 REGMUND GAS UNIT 1 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277315 REGMUND GAS UNIT 1 B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277195


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ REGMUND GAS UNIT 1 B 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277676 REHM 1 WILDCAT ALTA MESA SERVICES, LP 275702 REHM 1 MONT (WILCOX 10,900) ATLAS OPERATING LLC 276787 REID 1R HOPE (MIOCENE 1250) RISE PETROLEUM INVESTMENTS LLC 263676 REIFFERT -A- G. U. 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 173618 REIFFERT "D" 4 REIFFERT (YEGUA 5600) B D PRODUCTION CO., INC. 214750 REIFFERT-THOMAS G. U. #1 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 171298 REIFFERT-THOMAS G.U. #1 2 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 174104 REILLY 1 PHIL POWER (5200) CHARRO OPERATING, L.L.C. 288311 REILLY, ANNIE ET VIR 2GD GRETA (L-12) HILCORP ENERGY COMPANY 227875 REILLY, ANNIE ET VIR 2GF TOM OCONNOR (3900) HILCORP ENERGY COMPANY 031640 REILLY, ANNIE ET VIR 3 TOM OCONNOR (3900, SOUTH) HILCORP ENERGY COMPANY 210665 REILLY, ANNIE ET VIR 3G TOM O'CONNOR (3560) HILCORP ENERGY COMPANY 144485 REILLY, ANNIE ET VIR 10D TOM O'CONNOR (3560) HILCORP ENERGY COMPANY 220110 REILLY, ANNIE ET VIR 12 TOM O'CONNOR (3560) HILCORP ENERGY COMPANY 279872 REILLY, ANNIE ET VIR 12 TOM OCONNOR (3900) HILCORP ENERGY COMPANY 261055 REILLY, ANNIE ET VIR 13 TOM OCONNOR (3250) HILCORP ENERGY COMPANY 279870 REILLY, ANNIE ET VIR 22 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 270563 REMMERS 4-U NORDHEIM, SW. (12,000) ARCADIA OPERATING, LLC 141728 REMMERS (DEEP) 4-L NORDHEIM, SW. (12,750) ARCADIA OPERATING, LLC 141726 REMMERS (DEEP) 6 NORDHEIM, SW. (12,600) ARCADIA OPERATING, LLC 197946 REMMERS (DEEP) 7 NORDHEIM, SW. (12,600) ARCADIA OPERATING, LLC 196959 REMMERS (DEEP) 8 NORDHEIM, SW. (12,600) ARCADIA OPERATING, LLC 205831 REMMERS (DEEP) 8 NORDHEIM, SW. (12,600) ARCADIA OPERATING, LLC 274887 REMMERS (DEEP) GAS UNIT 3 NORDHEIM, SW. (11,600) ARCADIA OPERATING, LLC 209487 REMMERS, ELLIE ET AL 1 PENA (YEGUA 4700) B D PRODUCTION CO., INC. 127148 RENGER 1 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 245446 RENGER, HARVEY GAS UNIT 4 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 222045 REPKA-KILGORE 1 KOONTZ (4750) DAYLIGHT PETROLEUM LLC 280940 RESPONDEK 1 BUCHEL (AUSTIN) MASTODON OPERATING COMPANY, LLC 216680 RESSMAN 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 259855 RESSMAN 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 265659 RESSMAN 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277496 RESSMAN 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277497 RESSMAN 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277502 RESSMAN 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 279020 RESSMAN 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277498 RESSMAN 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276691 RESSMAN 01 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277510 RESSMAN 01 10H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277511 RESSMAN 01 11H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277515 REUTTER 1 WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 165024 REUTTER-DOHMANN UNIT 2 WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 170068 REXER 1 PROVIDENT CITY (WILCOX 11,900) SLANT OPERATING, LLC 259252 REXER-TUSA UNIT 2 PROVIDENT CITY (WILCOX 10800) SLANT OPERATING, LLC 266314 REYNOLDS GAS UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 261735 REYNOLDS GAS UNIT 1 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289565 REYNOLDS GAS UNIT 1 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289745 REYNOLDS GAS UNIT 1 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289564 REYNOLDS GAS UNIT 1 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289484 REYNOLDS GAS UNIT 1 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289566


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ REYNOLDS GAS UNIT 1 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 289567 REYNOLDS GAS UNIT 1 9H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290092 REYNOLDS GAS UNIT 1 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278457 REYNOLDS GAS UNIT 3 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289743 REYNOLDS GAS UNIT 3 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289744 REYNOLDS GAS UNIT 3 3H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 288733 REYNOLDS GAS UNIT 3 501H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289286 REYNOLDS UNIT 1 AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289742 REYNOLDS, MARY A. 21 RAMIRENA, SW.(SEC. B, JACKSON 3) CIMARRON ENGINEERING, LLC 159823 REYNOLDS, MARY A. 25 RAMIRENA, SW(YEGUA 4, SEG. C) CIMARRON ENGINEERING, LLC 182543 REYNOLDS, MARY A. 31 D RAMIRENA, SW. (YEGUA #2 SD.) CIMARRON ENGINEERING, LLC 080410 REYNOLDS, MARY A. 36 RAMIRENA, SW. (YEGUA #2 SD.) CIMARRON ENGINEERING, LLC 098691 REYNOLDS, MARY A. 40 RAMERINA, SW. (D-80) CIMARRON ENGINEERING, LLC 181724 RHODE, D.W. 2 TEXAM (COLE) ORIGIN PRODUCTION GROUP LLC 152853 RHODES TRUST 1 KAWITT (EDWARDS) P1 ENERGY, LLC 168731 RHODES TRUST 3H KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 209648 RHODES, V. E. GAS UNIT #1 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 077478 RHODES, V. E. GAS UNIT #1 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 101737 RHODES, V. E. GAS UNIT NO. 1 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 079955 RHODES, V.E. GAS UNIT NO. 1 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 157793 RICE, EUGENE 2 YOAKUM (3RD 8250 UPPER) UNIT PETROLEUM COMPANY 074995 RICHARD M. LUCAS ET AL -A- 1 BERCLAIR, E. (FRIO MIDDLE) T-C OIL COMPANY, LLC 261870 RICHARDSON, LOYD 1 FANNIN, SOUTH (TAG) WINCHESTER ENERGY OPERATING CO. 110622 RICHTER 1 MAXINE, EAST (9800) KEBO OIL & GAS, INC. 257225 RICKS LIVING TRUST GU 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268490 RICKS LIVING TRUST GU2 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268702 RIDLEY FARMS 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266584 RIDLEY FARMS 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266586 RIDLEY FARMS 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289844 RIDLEY FARMS 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289845 RIDLEY FARMS 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289846 RIDLEY FARMS 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289847 RIDLEY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 263530 RIDLEY 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268662 RIDLEY 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269546 RIDLEY 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 282526 RIDLEY 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271813 RIDLEY 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271605 RIEDEL, MARTHA ANN 1 SLICK (YEGUA 4760) CIBOLO ENERGY OPERATING, INC. 138304 RIEDEL, W. H. 1 SLICK (YEGUA 4760) CIBOLO ENERGY OPERATING, INC. 142829 RIEDEL, W. T. ET AL 1 SLICK, NE. (7600) CIBOLO ENERGY OPERATING, INC. 187327 RIEDEL, W.H. 2 SLICK (PETTUS) CIBOLO ENERGY OPERATING, INC. 130963 RIEDESEL 02 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267713 RIEDESEL 02 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271736 RIEMENSCHNEIDER 1 FIFTEEN MILE CREEK (WILCOX) MAGNUM PRODUCING, LP 192476 RIGGLE 1 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 279636 RIGGLE 2 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 270488 RIGGS, GERTRUDE 1 KAREN BEAUCHAMP (2100) PARAMONT, INC. 031419 RIGGS, GERTRUDE 3 KAREN BEAUCHAMP (2626) PARAMONT, INC. 121475 RIGGS, GERTRUDE 3 KAREN BEAUCHAMP (2700) MORGAN & RIGGS PRODUCING, INC. 076256 RISER 1 BURIED TREASURE (THIRD TOM LYNE) PROLINE ENERGY RESOURCES INC 238213


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ RISER 4 MOUNTAIN VIEW (WILCOX 9350) HURD ENTERPRISES, LTD. 274178 RISER A 1 TEXAM (WILCOX 7600) HURD ENTERPRISES, LTD. 280550 RISER, E. L. 1 MOUNTAIN VIEW (WILCOX 9350) WAGNER OIL COMPANY 102242 RISER, E. L. 2 MOUNTAIN VIEW (SAND 4) WAGNER OIL COMPANY 109083 RISER, E. L. 3 MOUNTAIN VIEW (WILCOX 9500) WAGNER OIL COMPANY 180191 RIVER RANCH 16 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 206515 RIVER RANCH 19 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 206514 RIVER RANCH 23 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 206520 RIVER RANCH -C- 1 HUFF (2200) T-C OIL COMPANY, LLC 241970 RIVER RANCH -D- 1 VIDAURI, NORTH (5500) T-C OIL COMPANY, LLC 242785 RIVER RANCH "F" 42 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 247728 RIVERDALE 2 WAYNO BUENO (8650 WILCOX SD.) NITRO OIL & GAS, LLC 189496 RIVERDALE GAS UNIT NO. 1 1 WAYNO BUENO (WILCOX MASSIVE) RAMTEX ENERGY LLC 190783 RIVERDALE GAS UNIT NO. 1 3 ALBRECHT (SLICK) NITRO OIL & GAS, LLC 191228 ROARK G. U. "A" 3 OAKVILLE, SOUTH (L. SLICK) WAGNER OIL COMPANY 153704 ROARK, G. U. "A" 2 OAKVILLE (WILCOX CONS.) WAGNER OIL COMPANY 101275 ROB & VAN RAMSEY UNIT 1 MUY BUENO (10904) LIGHTNING OIL COMPANY 255445 ROBBINS 4 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 258723 ROBBINS 7 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 271741 ROBBINS, F.S. (MFMU 1301) 1 LA WARD, NORTH (4700) KD ENERGY, LLC 205543 ROBERT BOWMAN UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280468 ROBERT BOWMAN UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280469 ROBERT BOWMAN UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280472 ROBERT CRAWLEY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 255805 ROBERT GRUNDER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267709 ROBERT HEARD GAS UNIT 2A REFUGIO-FOX (3300) G. & M. ENERGY COMPANY 106953 ROBERTS 1 STRAUCH-WILCOX (VELA) SHOREHAM OIL & GAS COMPANY, INC. 149128 ROBERTS UNIT 1 INEZ (8600) TRANS-PECOS RESOURCES, INC. 136164 ROBERTS, MORRIS ET AL 2 C DIRKS (HOCKLEY 2700) BRITANCO, L.L.C. 117177 ROBERTS, MORRIS ET AL 2 T DIRKS (HOCKLEY 3300) BRITANCO, L.L.C. 117179 ROBERTS, REAGAN 1 CIRCLE -A- (2600) BLANCONIA PRODUCING CORPORATION 083492 ROBERTSON 1 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 185705 ROBERTSON 1 SPEAKS, NW. (WILCOX 12,800) GAPP OIL & GAS, LLC 239493 ROBERTSON 2 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 191230 ROBERTSON 3 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 194148 ROBERTSON 3 SPEAKS (16250 WILCOX) MERIT ENERGY COMPANY 192291 ROBERTSON 5 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 198793 ROBERTSON 5 SPEAKS (16250 WILCOX) MERIT ENERGY COMPANY 205212 ROBERTSON 7 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 196923 ROBERTSON 7 SPEAKS (16250 WILCOX) MERIT ENERGY COMPANY 199050 ROBERTSON 8 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 204870 ROBERTSON 8 SPEAKS (16250 WILCOX) MERIT ENERGY COMPANY 205327 ROBERTSON 9 SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 211844 ROBERTSON 9 SPEAKS (16250 WILCOX) MERIT ENERGY COMPANY 211843 ROBERTSON 10 R SPEAKS (12700 WILCOX) MERIT ENERGY COMPANY 221971 ROBERTSON -F- 9R SPEAKS, SW. (3000) XTO ENERGY INC. 199101 ROBERTSON-ROSS UNIT #1 1 MAYO KD ENERGY, LLC 099941 ROBINSON 1 COLLIER, NORTH (ROBINSON) INNOVATIVE ENERGY SERVICES, INC. 271037 ROBINSON 1B TULETA, WEST (VICKSBURG G) BRITANCO, L.L.C. 116155 ROBINSON 2 WILDCAT PROLINE ENERGY RESOURCES INC 195474 ROBINSON 2 COLLIER (4000) INNOVATIVE ENERGY SERVICES, INC. 207812


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ROBINSON 5B TULETA (CATAHOULA "A" 1230) BRITANCO, L.L.C. 190259 ROBINSON 5B TULETA, WEST (HOCKLEY 3100) BRITANCO, L.L.C. 177978 ROBINSON-REAVES 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 185702 ROBINSON-REAVES 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 216437 ROBINSON-REAVES 3 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 225528 ROBINSON-REAVES 4 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 216446 ROBINSON-REAVES 5 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 227715 ROBINSON, D. E. 4 HOCKLEY (3535) BRITANCO, L.L.C. 101468 ROBINSON, VELMA 1 COLLIER (2200) ATLANTIC & GULF-WESTERN PET CORP 054684 ROBINSON, VELMA 2 MORALES (1750) ATLANTIC & GULF-WESTERN PET CORP 081065 ROBINSON, VELMA 3 C COLLIER (3800 FRIO) ATLANTIC & GULF-WESTERN PET CORP 081148 ROBINSON, VELMA 3 T COLLIER, EAST (MIOCENE) ATLANTIC & GULF-WESTERN PET CORP 119642 ROBINSON, VELMA 4 MORALES (1500) ALS PRODUCTION CO. 078066 ROCHE 1 ROCHE, S. (CHAMBERLAIN) SALIDA EXPLORATION, LLC 227407 ROCHE 2 CACTUS (SINTON) DAYLIGHT PETROLEUM LLC 175285 ROCHE 2 ROCHE, S. (CHAMBERLAIN) SALIDA EXPLORATION, LLC 231460 ROCHE 4R CACTUS (FRIO MASSIVE) SALIDA EXPLORATION, LLC 258523 ROCHE 11 ROCHE, S. (CHAMBERLAIN) SALIDA EXPLORATION, LLC 267474 ROCHE 12 ROCHE, S. (CHAMBERLAIN) HILCORP ENERGY COMPANY 188215 ROCHE, KATHERINE D. 1 ROCHE, WEST (GRIFFITH) ENERGY INTERNATIONAL 073571 ROCHELLE 1 DRY HOLLOW (GILSTRAP) PROLINE ENERGY RESOURCES INC 203594 ROCHELLE 2 DRY HOLLOW (RAINBOW SAND) PROLINE ENERGY RESOURCES INC 172034 ROCHELLE 3 DRY HOLLOW (ROCHELLE SAND) PROLINE ENERGY RESOURCES INC 174438 ROCHELLE 4 DRY HOLLOW (RAINBOW SAND) PROLINE ENERGY RESOURCES INC 212420 ROCHELLE 4 DRY HOLLOW (13,900 WILCOX) PROLINE ENERGY RESOURCES INC 183156 ROCHELLE 5 DRY HOLLOW (14100 WILCOX) PROLINE ENERGY RESOURCES INC 202584 ROCHELLE 6 DRY HOLLOW (13,900 WILCOX) PROLINE ENERGY RESOURCES INC 197995 ROCHELLE 7 DRY HOLLOW (13,900 WILCOX) PROLINE ENERGY RESOURCES INC 197996 ROCHELLE GAS UNIT 1R DRY HOLLOW (WILCOX DAGG, NE) PROLINE ENERGY RESOURCES INC 231373 ROCHELLE GAS UNIT 9 DRY HOLLOW (GILSTRAP) PROLINE ENERGY RESOURCES INC 238034 RODEN 1 LAVACA RIVER (1700) RISE PETROLEUM INVESTMENTS LLC 232912 RODEN 2 LAVACA RIVER (1700) RISE PETROLEUM INVESTMENTS LLC 235958 RODEN 4 HOPE (MIOCENE 2500) RISE PETROLEUM INVESTMENTS LLC 257536 RODEN GAS UNIT 3 LAVACA RIVER (1700) RISE PETROLEUM INVESTMENTS LLC 240424 RODEN GAS UNIT NO.1 1 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 228682 RODEN GAS UNIT 1 2 ALGENY (WILCOX 9600) MERIT ENERGY COMPANY 274680 RODEN GAS UNIT 1 3 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 232827 RODEN GAS UNIT 1 4 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 234533 RODEN GU 1 5 RENGER (WILCOX 12600) MERIT ENERGY COMPANY 242112 RODGERS 1 NEIGHBORHOOD (LOWER WILCOX) MERIT ENERGY COMPANY 234586 RODGERS GAS UNIT NO.1 2 NEIGHBORHOOD (LOWER WILCOX) MERIT ENERGY COMPANY 234756 RODGERS GU 1 3 NEIGHBORHOOD (LOWER WILCOX) MERIT ENERGY COMPANY 252110 RODGERS GU 1 3 SPEAKS, NW. (WILCOX 12,800) MERIT ENERGY COMPANY 277255 ROEDER GAS UNIT 1 WARMSLEY, S. (10550) FLETCHER OPERATING, LLC 229961 ROEHL GAS UNIT NO. 1 1 YORKTOWN, NE. (EDWARDS) ENSIGN OPERATING LLC 263858 ROGER 1R DREYER (VICKSBURG 3600) PREMIER MINERALS, INC. 191812 ROGERS 1 EL TORO BUENO (AY-3) EVEREST RESOURCE COMPANY 280083 ROKOHL SLICK SAND GAS UNIT 1 KARON (SLICK) FOURTH FLOOR OPERATING LLC 002313 ROKOHL-TEAGUE 1 GOEBEL (9600) REMORA OPERATING, LLC 251091 ROOKE 5 REFUGIO NEW (5190) ACOCK/ANAQUA OPERATING CO., LP 288967 ROOKE 7 LA ROSA (6750, ABOVE, GAS) BLUE WING ENERGY, INC. 211808


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ROOKE SOUTH M 01 LA ROSA (6750, BELOW, GAS) REMORA MANAGEMENT, LLC 266001 ROOKE, B. D. 1A LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 170056 ROOKE, B. D. C 3 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 170076 ROOKE, B. D. C 6 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 177969 ROOKE, B. D. C 8 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 190662 ROOKE, P. H. 15 REFUGIO, NEW (3220) 38 OIL & GAS, L.L.C. 063675 ROOKE, P. H. 16 REFUGIO NEW (1100) 38 OIL & GAS, L.L.C. 150985 ROOKE, P. H. 24 REFUGIO NEW (3600) 38 OIL & GAS, L.L.C. 220070 ROOKE, P. H. 43 REFUGIO NEW (1900) ACOCK/ANAQUA OPERATING CO., LP 142788 ROOKE, P. H. 47 REFUGIO NEW (1900) 38 OIL & GAS, L.L.C. 052529 ROOKE, P. H. 48 REFUGIO NEW (2000) 38 OIL & GAS, L.L.C. 221412 ROOKE, P. H. 62 REFUGIO NEW (1450) 38 OIL & GAS, L.L.C. 064959 ROOKE, P.H. 21 REFUGIO NEW (1900) 38 OIL & GAS, L.L.C. 126381 ROOKE, P.H. 60 REFUGIO NEW (4850) 38 OIL & GAS, L.L.C. 152490 ROOS 33 PLACEDO, W. (5420) ALLEGIANT RESOURCES, LLC 115590 ROOS 45 PLACEDO (4000 CATAHOULA) ALLEGIANT RESOURCES, LLC 239395 ROOS 49 PLACEDO (6100 FRIO) ALLEGIANT RESOURCES, LLC 119996 RORI ALBERT 4 SUBLIME, WEST (MIDWAY, U.) LONE OAK ENERGY INC 282296 ROSE FAMILY, ET. AL. 1 EL TORO MAX (AY-3) ATLAS OPERATING LLC 235993 ROSE-SAMPLE 1 EL TORO MAX (AY-3) ATLAS OPERATING LLC 245565 ROSENBAUM, O.&R. 1 A TYNAN (1300) GULF SANDS OIL CO. 104352 ROSS GAS UNIT 1 GANADO (S-4) KD ENERGY, LLC 047144 ROSS GAS UNIT 3 GANADO (3800) KD ENERGY, LLC 001647 ROSS, H. (GU) 9 GANADO (3700) KD ENERGY, LLC 179103 ROTH, ROSA ET AL 1 TULETA, WEST (SLICK-WILCOX 7500) CANNAN, MORRIS 004512 ROUDON 1 ALBRECHT (HOCKLEY) B.P. PRODUCTIONS INC. 284825 ROUDON 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 188866 ROUDON A 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 220796 ROUDON RANCH 1 KAREN BEAUCHAMP (2600) RICARDO OIL & GAS INC. 211712 ROUSE, FAY 1 PROVIDENT CITY (WILCOX 9,000) TMR EXPLORATION, INC. 003834 ROUSE, FAY 2 PROVIDENT CITY (WILCOX 9,000) TMR EXPLORATION, INC. 003835 ROUSE, FAY 4 PROVIDENT CITY (WILCOX 12,100) TMR EXPLORATION, INC. 169799 ROUSE, FAY 5 PROVIDENT CITY (FRIO 3410) TMR EXPLORATION, INC. 199094 ROY ESSE 01 01H SUGARKANE (EAGLE FORD) SEA EAGLE FORD, LLC 259888 ROYAL 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 167058 ROYAL 2 TYNAN (3600) GREAT TEXAS CRUDE INC. 173189 ROYAL UNIT A 001 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266821 ROYAL UNIT A-SMITH (SA) C1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288745 ROYAL UNIT A-SMITH (SA) C2 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288746 ROYAL UNIT A-SMITH (SA) C3 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288747 ROYAL UNIT B 1 DE WITT (EAGLE FORD SHALE) REPSOL OIL & GAS USA, LLC 266836 RUBEN SAENZ 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268523 RUBOTTOM 1 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 265661 RUCKMAN MONITOR WELL 1 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 262720 RUHMANN UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266279 RUNGE TOWN SITE GAS UNIT 1 1 DE WITT (EAGLE FORD SHALE) REPSOL OIL & GAS USA, LLC 266145 RUNGE 2 A 1H DE WITT (EAGLE FORD SHALE) REPSOL OIL & GAS USA, LLC 280452 RUNGE 2 A 3H DE WITT (EAGLE FORD SHALE) REPSOL OIL & GAS USA, LLC 280410 RUNGE 2 A 4H DE WITT (EAGLE FORD SHALE) REPSOL OIL & GAS USA, LLC 281480 RUNGE 2 (SL) A 2H DE WITT (EAGLE FORD SHALE) REPSOL OIL & GAS USA, LLC 281630 RUPPERT GAS UNIT 1 1 KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 244788


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ RUPPERT GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 269838 RUPPERT-RIPPS (SA) B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277737 RUPPERT-RIPPS (SA) B1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284427 RUPPERT-RIPPS (SA) B2 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284108 RUSCHHAUPT GAS UNIT 1 BULLOCK'S CHURCH, S. (10,000) XOG OPERATING LLC 176759 RUSCHHAUPT, W. H. JR. -A- 1 MEYERSVILLE, EAST (8225) MARWELL PETROLEUM LTD PARTNRSHIP 047992 RUSH, D.M. 1 BULLOCK'S CHURCH, S. (10,000) MARWELL PETROLEUM LTD PARTNRSHIP 256844 RUTH CARSON 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266590 RUTH UNITAS UNIT 2 GEORGE WEST, EAST (QUEEN CITY) PROLINE ENERGY RESOURCES INC 213259 RYALS 1 REFUGIO HEARD (5600) ACOCK/ANAQUA OPERATING CO., LP 255828 RYALS -A- 2 REFUGIO OLD (6300) EAGLEFORD OPERATING, INC. 003967 RYALS ESTATE -P- 5 REFUGIO OLD (5600) EAGLEFORD OPERATING, INC. 037001 RYALS, JOHN ESTATE -A- P 1 REFUGIO OLD BAYOU COMPANY, THE 106040 RYALS, N. J. 11 REFUGIO OLD (3400) STARRETT, C. E. 034434 RYALS, PEARSON EST. 1 REFUGIO OLD (V-3) EAGLEFORD OPERATING, INC. 003957 RYALS, SHELLY 7 REFUGIO OLD (3400) WYRICK & HUGHES 003953 RYAN 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269880 RYAN, NOLAN 1 CLAYTON (QUEEN CITY) AURORA RESOURCES CORPORATION 223841 S. WALLIS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264987 S. WALLIS UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270872 S. WALLIS UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270902 S. WALLIS UNIT A 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270869 SAGER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 260235 SAGER, ALBERT H. 1 GUN POINT (WILCOX LOWER, GRAY) URBAN OIL & GAS GROUP, LLC 115578 SALINAS, J. 6 COLOGNE (2870) BIG LAKE CORPORATION 196194 SALINAS, J. 7 COLOGNE (1400) BIG LAKE CORPORATION 203116 SALINAS, J. 10 COLOGNE (4000) BIG LAKE CORPORATION 200761 SALINAS, J. 10 T COLOGNE (4100) BIG LAKE CORPORATION 200767 SALINAS, J. 14 COLOGNE (4040) BIG LAKE CORPORATION 220607 SALYER "A" 1 MAETZE (3030) SALYER, MONTE C. 103917 SALYER-SHERMAN UNIT 1ST AUSTIN (NITA) SIANA OIL & GAS 245521 SAMPLE 1 BRIGHT FALCON (YEGUA 9900) DECKER OPERATING CO., L.L.C. 288959 SAMPLES 1 YOAKUM (LOWER WILCOX) UNIT PETROLEUM COMPANY 211477 SAMSEL (WILCOX 9950') GAS UNIT 1 MALO DOMINGO (WILCOX 9950) WHITE MARLIN OPERATING CO, LLC 262191 SAN CHRISTOVAL RANCH UNIT 'C' 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265821 SAN CHRISTOVAL RANCH UNIT 'C' 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265822 SAN CHRISTOVAL RANCH UNIT "A" 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265421 SAN CHRISTOVAL RANCH UNIT A AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289283 SAN CHRISTOVAL RANCH UNIT A AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289284 SAN CHRISTOVAL RANCH UNIT A AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289282 SAN CHRISTOVAL RANCH UNIT A AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 288640 SAN CHRISTOVAL RANCH UNIT C 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288011 SAN CHRISTOVAL RANCH UNIT C 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 285741 SAN CHRISTOVAL RANCH UNIT C 502H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278792 SAN CHRISTOVAL RANCH UNIT C AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280200 SAN CHRISTOVAL RANCH UNIT C AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279977 SAN CHRISTOVAL RANCH UNIT C-G SA 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 286317 SAN CHRISTOVAL RANCH UNIT E 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271496 SAN CHRISTOVAL RANCH UNIT E 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271733 SAN CHRISTOVAL RANCH UNIT E 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271497 SAN CHRISTOVAL RANCH UNIT E 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271810


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SAN CHRISTOVAL RANCH UNIT F 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271599 SAN CHRISTOVAL RANCH UNIT F 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271671 SAN CHRISTOVAL RANCH UNIT F 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271672 SAN CHRISTOVAL RANCH UNIT G 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271494 SAN CHRISTOVAL RANCH UNIT G 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271228 SAN CHRISTOVAL RANCH UNIT G 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288668 SAN CHRISTOVAL RANCH UNIT G 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288702 SAN CHRISTOVAL RANCH UNIT G 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280466 SAN CHRISTOVAL RANCH UNIT G 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277846 SAN CHRISTOVAL RANCH UNIT G 10H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278174 SAN CHRISTOVAL RANCH UNIT G 309H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277848 SAN CHRISTOVAL RANCH UNIT G 506H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 281442 SAN CHRISTOVAL RANCH UNIT G 508H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278025 SAN CHRISTOVAL RANCH UNIT G 511H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 278024 SAN CHRISTOVAL RANCH UNIT G AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 288701 SAN CHRISTOVAL RANCH UNIT G AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 281503 SAN CHRISTOVAL RANCH UNIT G AC 5H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279955 SANDHOP 1 WITTE (LF-123) KRAM ENERGY 207505 SANGER ESTATE 7 MOUNTAIN VIEW (WILCOX 10400) WAGNER OIL COMPANY 159451 SANGER HEIRS 1 CLOETER (7300) ANDERSON PETRO-EQUIPMENT, INC. 100913 SANGER HEIRS 1 SOUTH MOUNTAIN VIEW (SLICK A) GOUGER OIL COMPANY, LLC 276006 SANGER HEIRS 1 SOUTH MOUNTAIN VIEW (LULING L-4) BRANDER, SAM H. 266045 SANGER HEIRS 1 C SIERRA VISTA (SLICK A) MIDSTATES CORPORATION 043312 SANGER HEIRS 1 T SIERRA VISTA (SLICK B) MIDSTATES CORPORATION 043313 SANGER HEIRS 2 CLOETER (1700) ANDERSON PETRO-EQUIPMENT, INC. 104027 SANGER HEIRS 391 1 SANGER, SOUTH (2ND TOM LYNE) BLUEBONNET OIL & GAS 110561 SANGER HEIRS 391 2 SANGER, SOUTH (2ND TOM LYNE) BLUEBONNET OIL & GAS 175634 SANGER HEIRS 391 3 DIAMOND T (2800) BLUEBONNET OIL & GAS 112643 SANGER HEIRS 391 4LT SANGER, SOUTH (2ND TOM LYNE) BLUEBONNET OIL & GAS 116097 SANGER HEIRS 391 4UT DIAMOND T (1ST. TOM LYNE) BLUEBONNET OIL & GAS 119951 SANGER HEIRS 392 1LT SANGER, SOUTH (2ND TOM LYNE) BLUEBONNET OIL & GAS 114492 SANGER HEIRS 392 1UT DIAMOND T (1ST. TOM LYNE) BLUEBONNET OIL & GAS 118975 SAPPINGTON FARMS 1 LA SALLE (6110) DOUBLE PLAY OIL & GAS, INC 255242 SARTWELLE 7 CRANDALL RUBIE (MAGNOLIA) HUGOTON OPERATING COMPANY, INC. 265068 SARTWELLE F & Y UNIT 1 SPEAKS, SW. (2500) GREAT TEXAS CRUDE INC. 216214 SAUNDERS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270216 SAUNDERS UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270236 SAUNDERS UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288736 SAUNDERS UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288764 SAUNDERS UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288765 SAUNDERS UNIT A 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288782 SAUNDERS UNIT A 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288630 SAUNDERS UNIT A 8 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288728 SAUNDERS UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 269197 SAUNDERS UNIT B 1MW DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268844 SAUNDERS UNIT B 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268989 SAUNDERS UNIT B 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 269017 SAUNDERS UNIT B 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 286238 SAUNDERS UNIT B 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 286475 SAUNDERS UNIT B 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 286248 SAUNDERS UNIT B 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 286249


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SAUNDERS UNIT B 8 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 286312 SAUNDERS UNIT B 9 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 286662 SCANIO / SHELTON 6 MISSION RIVER (8300 VKSBG) HIGH PLAINS GAS SYSTEMS, INC. 223050 SCANIO SHELTON 3 MISSION RIVER (6100) ACOCK/ANAQUA OPERATING CO., LP 252998 SCANIO SHELTON 5 MISSION RIVER (6400) ACOCK/ANAQUA OPERATING CO., LP 222184 SCANIO SHELTON 10 MISSION RIVER (6300) ACOCK/ANAQUA OPERATING CO., LP 290184 SCANIO-HAWN 1 MISSION RIVER (8400) HIGH PLAINS GAS SYSTEMS, INC. 235535 SCANIO/ SHELTON 7 MISSION RIVER (8200) HIGH PLAINS GAS SYSTEMS, INC. 254386 SCANIO/SHELTON 1 MISSION RIVER (5800) ACOCK/ANAQUA OPERATING CO., LP 208522 SCANIO/SHELTON 2 MISSION RIVER (6200) HIGH PLAINS GAS SYSTEMS, INC. 207036 SCANIO/SHELTON 3 MISSION RIVER (6300) HIGH PLAINS GAS SYSTEMS, INC. 205432 SCANIO/SHELTON 4 MISSION RIVER (4200) HIGH PLAINS GAS SYSTEMS, INC. 234536 SCANIO/SHELTON 4 MISSION RIVER (6400) HIGH PLAINS GAS SYSTEMS, INC. 207859 SCANIO/SHELTON 5 MISSION RIVER (5800) HIGH PLAINS GAS SYSTEMS, INC. 226852 SCANIO/SHELTON 7 MISSION RIVER (8400) HIGH PLAINS GAS SYSTEMS, INC. 221611 SCANIO/SHELTON 8 MISSION RIVER (8400) HIGH PLAINS GAS SYSTEMS, INC. 234544 SCANIO/SHELTON 10 MISSION RIVER (7200) HIGH PLAINS GAS SYSTEMS, INC. 243787 SCANIO/SHELTON 11 MISSION RIVER (8400) ACOCK/ANAQUA OPERATING CO., LP 250577 SCANIO/SHELTON 12 MISSION RIVER (8300 VKSBG) HIGH PLAINS GAS SYSTEMS, INC. 241967 SCANIO/SHELTON 13 MISSION RIVER (6000) ACOCK/ANAQUA OPERATING CO., LP 272900 SCANIO/SHELTON 15 MISSION RIVER (8300 VKSBG) MANTLE OIL & GAS, LLC 280581 SCANIO, M 6 TOM OCONNOR (7930) ACOCK/ANAQUA OPERATING CO., LP 198456 SCANIO, M "B" 1 REFUGIO-FOX (4900) ACOCK/ANAQUA OPERATING CO., LP 114263 SCANIO, M. 2D REFUGIO-FOX (KWA SAND) ACOCK/ANAQUA OPERATING CO., LP 189411 SCANIO, MIGUELITA 2 REFUGIO-FOX (6300 A) ACOCK/ANAQUA OPERATING CO., LP 132936 SCANIO, MIGUELITA 4 REFUGIO-FOX (6220) ACOCK/ANAQUA OPERATING CO., LP 185226 SCANIO, MIGUELITA 8 REFUGIO-FOX (6100) ACOCK/ANAQUA OPERATING CO., LP 200166 SCANIO, MIGUELITA 10 REFUGIO-FOX (6600) ACOCK/ANAQUA OPERATING CO., LP 207964 SCANIO, MIGUELITA 16 REFUGIO-FOX (6750) ACOCK/ANAQUA OPERATING CO., LP 233636 SCANIO, MIGUELITA 18 REFUGIO OLD (6550 FRIO) ACOCK/ANAQUA OPERATING CO., LP 234584 SCANIO, MIGUELITA 29 REFUGIO-FOX (6300 A) ACOCK/ANAQUA OPERATING CO., LP 280122 SCHAEFER, E. C. 1 U COTTONWOOD CREEK, S. (MACKHANK) MAGNUM PRODUCING, LP 042458 SCHAEFER, E. C. 5 COTTONWOOD CREEK, S (FRIO 2800) MAGNUM PRODUCING, LP 145447 SCHENDEL 1 SAINT ARMO (MACKHANK) VENTEX OPERATING CORP. 207971 SCHENDEL 2 HERNDON (3000 FRIO) VENTEX OPERATING CORP. 220922 SCHENDEL A 1 A SAINT ARMO (MACKHANK) VENTEX OPERATING CORP. 220090 SCHENDEL A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264794 SCHENDEL A 2 SAINT ARMO (MACKHANK) VENTEX OPERATING CORP. 222473 SCHENDEL A 2 SAINT ARMO (WILCOX, LOWER STEVE) VENTEX OPERATING CORP. 255165 SCHENDEL UNIT A G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259783 SCHENDEL UNIT A G 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270247 SCHENDEL UNIT A 189 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266838 SCHENDEL UNIT A 189 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 285496 SCHENDEL UNIT A 189 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 284660 SCHENDEL UNIT A 189 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 284831 SCHENDEL UNIT A 189 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 284822 SCHENDEL UNIT A-189 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259776 SCHENDEL 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266591 SCHENDEL 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266599 SCHENDEL 02 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268512 SCHENDEL 02 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270128


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SCHENDEL 02 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269688 SCHENDEL 02 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271847 SCHENDEL 02 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272093 SCHENDEL 02 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272127 SCHENDEL 02 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276209 SCHENDEL 02 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274640 SCHENDEL 02 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276876 SCHENDEL 02 11H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274641 SCHENDEL 02 12H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 274642 SCHENDEL 02 13H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276874 SCHENDEL 02 14H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280486 SCHENDEL 02 15H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281119 SCHENDEL 02 16H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281061 SCHENDEL-DOUGLAS 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284328 SCHENDEL-DOUGLAS 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284329 SCHENDEL-DOUGLAS 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284293 SCHENDEL-DOUGLAS 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284330 SCHENDEL-DOUGLAS 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284339 SCHENDEL-DOUGLAS 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284176 SCHENDEL-DOUGLAS 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284237 SCHERER 1 TELFERNER (2500) FIELD PETROLEUM CORP. 209725 SCHERER 1 WAYSIDE CHAPEL (YEGUA) RELENTLESS PERMIAN OPERATING LLC 269578 SCHERER 2 WAYSIDE CHAPEL (YEGUA) AURORA RESOURCES CORPORATION 275527 SCHILHAB 1 SECLUSION (COCKFIELD 6100) GARRISON LTD. 229727 SCHINDLER 1 INEZ (FRIO 5200) GEONATURAL RESOURCES, INC. 192216 SCHIRMER "C-120" 1 BONNIE VIEW (5300) REMORA MANAGEMENT, LLC 169259 SCHIRMER C-120 3 BONNIE VIEW (5700) REMORA MANAGEMENT, LLC 272659 SCHIRMER-BUCK 'A' UNIT 1 BONNIE VIEW (5300) REMORA MANAGEMENT, LLC 285566 SCHIRMER-BUCK UNIT 1 BONNIE VIEW (4700) REMORA MANAGEMENT, LLC 285628 SCHIRMER-BUCK UNIT 1 BONNIE VIEW (5500) REMORA MANAGEMENT, LLC 184604 SCHIRMER, HENRY 12 BONNIE VIEW (5600) REMORA MANAGEMENT, LLC 193180 SCHIRMER, HENRY 18 BONNIE VIEW (4700) REMORA MANAGEMENT, LLC 286550 SCHMELTZER 1 COLOGNE (3890) AMPAK OIL COMPANY 181884 SCHMELTZER-JOHN UNIT "A" 2 COLOGNE (4300) AMPAK OIL COMPANY 202557 SCHMELTZER-JOHNS UNIT 1 COLETTO CREEK (1400 MIOCENE) AMPAK OIL COMPANY 139246 SCHMIDT FAMILY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266034 SCHMIDT FAMILY 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270360 SCHMIDT FAMILY 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268944 SCHMIDT GAS UNIT 1 ALBRECHT CREEK (WILCOX 9780) NOG PRODUCTION & OPERATING LLC 238237 SCHOMBURG-NAVIDAD RIVER UNIT 4 WESTHOFF (COMBINED ASSOCIATED) PROGENIES OPERATING LLC 278940 SCHORLEMER 02 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268709 SCHORLEMER 02 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268515 SCHORLEMER 02 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268710 SCHORLEMER 02 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276089 SCHORLEMER 02 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272520 SCHORLEMER 02 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 273162 SCHORLEMER 02 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 272473 SCHORLEMER 02 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281057 SCHORLEMER 02 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277911 SCHORLEMER 02 10H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277913 SCHORLEMER 02 11H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 277964


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SCHOVAJSA, E. H. 13 PLACEDO, EAST (4700) ALLEGIANT RESOURCES, LLC 156621 SCHRADE UNIT 1ST CAESAR, SOUTH (WILCOX 9770) FLETCHER OPERATING, LLC 193060 SCHRADE-DAHL G.U. 2 CAESAR, SOUTH (WILCOX 9770) FLETCHER OPERATING, LLC 195635 SCHRADE-DAHL UNIT 1ST CAESAR, SOUTH (WILCOX 10450) FLETCHER OPERATING, LLC 189912 SCHREINER K. W. 4 TOM LYNE, N. (WILCOX 9350) WAGNER OIL COMPANY 155029 SCHREINER RANCH TRUST II 2 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 144885 SCHREINER RANCH TRUST II 3 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 144503 SCHREINER RANCH TRUST II 5 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 141656 SCHREINER RANCH TRUST II 6 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 234406 SCHREINER RANCH TRUST II 9 LIMES (WILCOX F-2) SANDEL OPERATING COMPANY 161355 SCHREINER, K. W. 2-U TOM LYNE, N. (WILCOX 9350) WAGNER OIL COMPANY 150982 SCHREINER, K. W. F 2L TOM LYNE, N. (WILCOX 10,250) WAGNER OIL COMPANY 157505 SCHREINER, K.W. 1 TOM LYNE, N. (WILCOX 10,000) WAGNER OIL COMPANY 130181 SCHROEDER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268026 SCHROEDER G. U. 3 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 212872 SCHROEDER GAS UNIT 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 197341 SCHROEDER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 264855 SCHROEDER 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268775 SCHROEDER 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281416 SCHROEDER 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281419 SCHROEDER 01 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281122 SCHROEDER 01 10H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281295 SCHROEDER 01 11H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 281613 SCHUECH, IRMA "B" 2 TW (FRIO 5830) ALLEGIANT RESOURCES, LLC 152485 SCHULLE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266686 SCHULTE 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260390 SCHULTE 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272316 SCHULTHEISS GAS UNIT 1 HELEN GOHLKE (WILCOX, LO. B) FLETCHER OPERATING, LLC 231075 SCHULTZ, L. P. 4 HEYSER (3900) MCGOWAN WORKING PARTNERS, INC. 077414 SCHULTZ, L. P. 7 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 046613 SCHULTZ, L. P. 10 HEYSER (4300) MCGOWAN WORKING PARTNERS, INC. 002091 SCHULTZ, L.P. 3 HEYSER (4400) C.W. PICKERING, INC. 150593 SCHULTZE 1 L CADENCE RELIANCE (WILCOX) PROLINE ENERGY RESOURCES INC 202627 SCHULTZE 1 U CHARCO, SE. (WILCOX 9600) PROLINE ENERGY RESOURCES INC 213663 SCHULTZE 2 CHARCO, S. (WILCOX 9300) PROLINE ENERGY RESOURCES INC 219610 SCHULZ 1 SCHULZ (EDWARDS) BROWNING, LANDON 080573 SCHULZ ESTATE 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268802 SCHULZ ESTATE 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268836 SCHULZ FAMILY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 270399 SCHULZ TRUST 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269686 SCHULZ UNIT 2H THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 165379 SCHULZ 2-H GAS UNIT 3 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 231500 SCHULZ 3-H GAS UNIT 2 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 232515 SCHULZ, HARRY 3 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 234600 SCHULZ, J. GERALD 1 SCHULZ (EDWARDS) BROWNING, LANDON 086339 SCOTT 1 MCCASKILL (LOWER WILCOX) UNITED TEXAS OIL LLC 192557 SCOTT 1 THOMASTON (WILCOX 7800) CAMOIL, INC. 192653 SCOTT 1 THOMASTON (WILCOX 8750) MOSAIC OIL LLC 188206 SCOTT 2 MCCASKILL (WILCOX L-3) UNITED TEXAS OIL LLC 283159 SCOTT 3 MCCASKILL (WILCOX L-3) UNITED TEXAS OIL LLC 283155 SCOTT 3 NORMANNA, S. (2050) MCGUFFIN, JOE S. INC. 074975


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SCOTT RANCH 1A NORMANNA, S. (2050) DISCOVERY PETROLEUM, L.L.C. 110596 SCR G-MOBIL C SA 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288798 SCR UNIT "B" (ALLOCATION) 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264869 SEA BISCUIT 1 MAYO (3575) ROCA PRODUCTION, INC. 259149 SEALE 1 FRIENDSHIP CHURCH (3700) HEADWATERS ENERGY PARTNERS, LLC 264798 SEALE 5 NORBEE (3400) HEADWATERS ENERGY PARTNERS, LLC 262184 SEALE, SAM D. 1 SWAN LAKE (6000) ACOCK/ANAQUA OPERATING CO., LP 184359 SEALE, SAM D. 4 SWAN LAKE, N. (5925) ACOCK/ANAQUA OPERATING CO., LP 123230 SEALE, SAM D. III 1 WILDCAT ACOCK/ANAQUA OPERATING CO., LP 163237 SEALE, SAM D. III 4 SWAN LAKE (5900) ACOCK/ANAQUA OPERATING CO., LP 164214 SEE 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 208005 SEE 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 226755 SEIDEL UNIT A 5 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 272314 SEIDEL UNIT A 8 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 286056 SEIDEL UNIT A 10 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 286532 SEIDEL UNIT A 11 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 286531 SEIDEL UNIT A 12 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 286342 SEIDEL UNIT A 13 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 286140 SEIDEL UNIT A 14 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 286057 SEIDEL UNIT A 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 287147 SEIDEL UNIT C 701 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 290818 SEIFERT B 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281964 SEIFERT, EDWARD H. ET UX 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 193281 SEIFFERT 3 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 206438 SEILER GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 259557 SEILER GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288742 SEILER GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288717 SEILER GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288743 SEILER GAS UNIT 1 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288744 SEILER GAS UNIT 1 B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288513 SEILER GAS UNIT 1 B 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 288562 SEILER, FRIEDA 1 ARNECKEVILLE, S. (Y-6) MARWELL PETROLEUM LTD PARTNRSHIP 111262 SEIM, AGNES 1 YORKTOWN, N (EDWARDS 13850) CIMROD, LLC 233244 SELLS , W. M. HEIRS 1 APPLING (SEG 1 7500) CORUM PRODUCTION COMPANY 000660 SELLS, KATHERINE MAUDE 1 APPLING, N. (MELBOURNE, UPPER) CORUM PRODUCTION COMPANY 173264 SELLS, KATHERINE MAUDE 1 APPLING, N. (8000) CORUM PRODUCTION COMPANY 205602 SELLS, KATHERINE MAUDE 2 APPLING, N. (MELBOURNE, LOWER) CORUM PRODUCTION COMPANY 059206 SELLS, KATHERINE MAUDE 4 APPLING, N. (8000) CORUM PRODUCTION COMPANY 135557 SFS UNIT 16 1H EAGLEVILLE (EAGLE FORD-2) BPX OPERATING COMPANY 271121 SHARONLEE (SWD) 1 SHARONLEE (SLIGO) WAGNER OIL COMPANY 127105 SHAW SMITH 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 261075 SHAW/RAY 1 JOE FINGER (CATAHOULA) OSYKA OIL & GAS, INC. 172006 SHAW/RAY 02 JOE FINGER (CATAHOULA) DRILL-CO., INC. 192631 SHAW, JOHN 1 SAN DOMINGO, S. (1250) OSYKA OIL & GAS, INC. 151505 SHAY 1 PHIL POWER (5050 FRIO) GULF COAST OPER. & ENG., INC. 129633 SHAY 1 REFUGIO OLD (6550 FRIO) ACOCK/ANAQUA OPERATING CO., LP 221898 SHAY 2 CIRCLE -A- (5100) CHARRO OPERATING, L.L.C. 221743 SHAY 'B' 2 PHIL POWER (4870) CHARRO OPERATING, L.L.C. 272318 SHAY 'B' 2 PHIL POWER, NORTH (MIOCENE A) CHARRO OPERATING, L.L.C. 280116 SHAY "D" 5 PHIL POWER (4870) REMORA OPERATING, LLC 167853 SHAY TRACT 3 3 TEJAS (FRIO 5000) CHARRO OPERATING, L.L.C. 228737


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SHAY, WALLACE 1 CLARKSON (FRIO 4450) BAYOU COMPANY, THE 102931 SHEFCIK ET AL GAS UNIT 1 BRUSHY CREEK (WILCOX CONS.) TALOS GULF COAST ONSHORE LLC 219751 SHEFCIK ET AL GAS UNIT 2 BRUSHY CREEK (WILCOX CONS.) TALOS GULF COAST ONSHORE LLC 262186 SHEFCIK ET AL GAS UNIT 3 BRUSHY CREEK (WILCOX CONS.) TALOS GULF COAST ONSHORE LLC 220084 SHELLY GRIFFITH A 2 PAPALOTE, W. (GRIFFITH RANCH) LEGACY EXPLORATION, INC. 137843 SHELLY UNIT 1H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 281963 SHELLY, T. P. 7 REFUGIO HEARD (4600) WYRICK & HUGHES 003914 SHELTON 11 WILDCAT KEBO OIL & GAS, INC. 265952 SHELTON H 1 D HYNES RANCH (6800) HILCORP ENERGY COMPANY 280726 SHELTON HEIRS 3 PLACEDO, EAST (6200 SAND) ACOCK/ANAQUA OPERATING CO., LP 217369 SHELTON/HEIRS 2 PLACEDO (5200) ACOCK/ANAQUA OPERATING CO., LP 247720 SHELTON, BEN 10 BEN SHELTON (7350) FINALY RESOURCES LLC 177912 SHELTON, BEN 11 BEN SHELTON (6400) FINALY RESOURCES LLC 194133 SHELTON, BEN -A- 1 PLACEDO, EAST (6000, STRAY) ACOCK/ANAQUA OPERATING CO., LP 188445 SHELTON, BEN -A- 2 BEN SHELTON (6650) ACOCK/ANAQUA OPERATING CO., LP 170666 SHELTON, BEN -A- 4 PLACEDO, EAST (5600 SD.) ACOCK/ANAQUA OPERATING CO., LP 177973 SHELTON, J. ISABELLA B 3 MISSION RIVER (6000) ACOCK/ANAQUA OPERATING CO., LP 190357 SHELTON, J. ISABELLA B 11 MISSION RIVER (5800) ACOCK/ANAQUA OPERATING CO., LP 059027 SHELTON, J. ISABELLA -D- B 2 MISSION RIVER (6100) HIGH PLAINS GAS SYSTEMS, INC. 187985 SHELTON, NANCY 2 PLACEDO (6050) ALLEGIANT RESOURCES, LLC 176044 SHEPPARD A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264158 SHEPPARD GAS UNIT 2 BUCHEL (EDWARDS) ENSIGN OPERATING LLC 148430 SHINER 1 HALLETTSVILLE, S. (YEGUA 3650) LGDC CORPORATION 245905 SHINER UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 287429 SHINER UNIT C 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286009 SHIRLEY STEFFEK 1 BRESLAU (WILCOX 8395) MASCOT OIL COMPANY 286197 SHOFNER, W. A. 1 SHERIFF (F-3) REMORA MANAGEMENT, LLC 033750 SHOFNER, W. A. 3 SHERIFF (F-1) REMORA MANAGEMENT, LLC 044475 SHOFNER, W. A. 9 SHERIFF (F-2) REMORA MANAGEMENT, LLC 033748 SHOFNER, W. A. 13 SHERIFF (F-2) REMORA MANAGEMENT, LLC 134155 SHOFNER, W.A. 2 SHERIFF (CONSOLIDATED) REMORA MANAGEMENT, LLC 151889 SIBLEY ESTATE 5 ESPERANZA (12000 SAND) XTO ENERGY INC. 175323 SIBLEY ESTATE 6 ESPERANZA (YEGUA) XTO ENERGY INC. 175908 SIBLEY ESTATE 10 WILDCAT XTO ENERGY INC. 181632 SIBLEY ESTATE 11 ESPERANZA (WILCOX 7800) XTO ENERGY INC. 269091 SIENKIEWICS UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 262109 SIENKIEWICZ UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290538 SIENKIEWICZ UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268782 SIENKIEWICZ UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266858 SIENKIEWICZ UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 284097 SIENKIEWICZ UNIT 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277548 SIENKIEWICZ UNIT 504H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 283778 SIENKIEWICZ UNIT 505H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 290481 SIENKIEWICZ UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 283163 SIENKIEWICZ UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 283164 SIENKIEWICZ UNIT AC 9H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 279741 SIEVERS 1 L CEDAR BRUSH (3RD MASSIVE WILCOX) APV MCCAMEY LLC 132550 SIEVERS 1 U CEDAR BRUSH (WILCOX) APV MCCAMEY LLC 132573 SIEVERS 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 261037 SIEVERS 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268942 SIEVERS, EDWALD ET AL 3 C HOLLY (VICKSBURG 3900) WILSON HYDROCARBON INC. 078999


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SIEVERS, EDWALD ET AL 3 T HOLLY (COOK MOUNTAIN 5150) WILSON HYDROCARBON INC. 078998 SILLIMAN GAS UNIT 1 C GANADO (3700 -A-) KD ENERGY, LLC 001644 SILLIMAN GAS UNIT 1 T GANADO (4000) KD ENERGY, LLC 001653 SILLIMAN GAS UNIT 5 GANADO, DEEP (5650) KD ENERGY, LLC 236787 SILLIMAN GAS UNIT 12 H GANADO (3800) KD ENERGY, LLC 254064 SILLIMAN GAS UNIT 15 GANADO (5270) KD ENERGY, LLC 162199 SILLS 2 NURSERY (YEGUA 5700) INLAND OCEAN, INC. 282422 SIMEK-COOK UNIT 1 YOAKUM (WILCOX 7300) ATLAS OPERATING LLC 221061 SIMMONS GAS UNIT 1 AUSTIN (NITA) SCORPION OIL & GAS, LLC 169091 SIMMONS GAS UNIT 1-L AUSTIN (WILCOX MASSIVE E) SCORPION OIL & GAS, LLC 185204 SIMMONS GAS UNIT 1-U AUSTIN (WILCOX MASSIVE) SCORPION OIL & GAS, LLC 174752 SIMMONS GAS UNIT 2 AUSTIN (WILCOX MASSIVE E) SCORPION OIL & GAS, LLC 185198 SIMMONS GAS UNIT 4-L AUSTIN (WILCOX MASSIVE E) SCORPION OIL & GAS, LLC 182772 SIMMONS GAS UNIT 4-U AUSTIN (WILCOX MASSIVE) SCORPION OIL & GAS, LLC 182490 SIMMONS GAS UNIT 5 L AUSTIN (WILCOX MASSIVE E) SCORPION OIL & GAS, LLC 198686 SIMMONS GAS UNIT 5-L AUSTIN (WILCOX G-9TH AUSTIN) SCORPION OIL & GAS, LLC 180294 SIMMONS GAS UNIT 5-U AUSTIN (WILCOX MASSIVE) SCORPION OIL & GAS, LLC 180299 SIMMONS GAS UNIT 6 AUSTIN (WILCOX MASSIVE) SIANA OIL & GAS 228545 SIMMONS GAS UNIT 7 AUSTIN (WILCOX MASSIVE) SCORPION OIL & GAS, LLC 237080 SIMMONS GAS UNIT 2 AUSTIN (WILCOX MASSIVE) SCORPION OIL & GAS, LLC 200929 SIMMONS SUBDIVISION UNIT 1 SHARONLEE (SLIGO) DYNAMIC PRODUCTION, INC. 254612 SIMMONS UNIT 1 WEESATCHE, NE. (LITTLE SAND) UNITED TEXAS OIL LLC 220875 SIMONS-VANCE 1 WESTHOFF (COMBINED ASSOCIATED) MAGNUM PRODUCING, LP 280417 SIMONS, M. K. 3 F TEXANA (6550) MCDANIEL, D. L. 034783 SIMONS, M. K. 3 I TEXANA (6450) MCDANIEL, D. L. 034836 SIMONS, T. K. 1 TEXANA, NORTH (5800) SEQUOIA FOSSIL FUELS, INC. 034930 SIMONS, T. K. 2 TEXANA, NORTH (5550) SEQUOIA FOSSIL FUELS, INC. 165416 SIMPSON 1 CHRISTMAS (12300) FAULCONER, VERNON E., INC. 245470 SIMPSON -G- 4 PRIDHAM LAKE, SOUTH (FRIO 4300) MANDARIN OIL & GAS COMPANY 116984 SINAST GAS UNIT 1 CHRISTMAS, DEEP (WILCOX 10400) FLETCHER OPERATING, LLC 223862 SINAST GAS UNIT 1 WARMSLEY (VAUGHN) FLETCHER OPERATING, LLC 288751 SINAST GAS UNIT 2 WARMSLEY (VAUGHN) FLETCHER OPERATING, LLC 255291 SINAST GAS UNIT 3 CHRISTMAS, SOUTH (GANSON) FLETCHER OPERATING, LLC 230791 SINCLAIR HUNT 1 STRAUCH-WILCOX (SLICK 7900) WALLIS ENERGY, INC. 140098 SINOR RANCH 5 SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 254906 SINOR RANCH G. U. 4 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 238212 SINOR RANCH 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266603 SINOR RANCH 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266500 SINOR RANCH 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267764 SINOR RANCH 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267845 SINOR RANCH 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269191 SIPPEL 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266604 SISSION-FRIO 1 MISSION VALLEY, W. (1350 STRAY) TRANSPACIFIC ENERGY, LLC 288124 SISSON GAS UNIT 1 MISSION VALLEY, W.(WILCOX 10600) TRANSPACIFIC ENERGY, LLC 229832 SIXJAY 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 124560 SJI 1 OAKVILLE (WILCOX CONS.) KEBO OIL & GAS, INC. 261786 SJOBERG 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 259885 SKAGGS BLOCK 84 1 CLAYTON (BLOCK 86 SD) HEDRICK PRODUCTION INC. 128170 SLAUGHTER GAS UNIT 1 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 254486 SLAUGHTER GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 270608 SLAUGHTER GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 269198


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SLAUGHTER GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 269011 SLAUGHTER-RHODES TRUST C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280732 SLAUGHTER-RHODES TRUST C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280733 SLAUGHTER-RHODES TRUST C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280734 SLAUGHTER-RHODES TRUST C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283784 SLAUGHTER-RHODES TRUST (SA) C5 C 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284246 SLAZENGER FRIO 1 MORALES (3260) BNP PETROLEUM CORPORATION 250785 SLICK SAND OIL UNIT 23 TULSITA-WILCOX MISSION RIVER SYSTEMS, INC. 225819 SLICK SAND OIL UNIT 24 TULSITA-WILCOX MISSION RIVER SYSTEMS, INC. 225825 SLONE B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266748 SMAJSTRLA UNIT 1R WELDER RANCH (2950) MOSAIC OIL LLC 151159 SMITH GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 261021 SMITH-CAROTHERS 1 COLOGNE (4550) AMPAK OIL COMPANY 217485 SMITH, ALICE B. 1 L ARROYO ROJO (BURGHER) EXPRESS OIL CO. 112636 SMITH, ALICE B. 1 U ARROYO ROJO (BALLARD) EXPRESS OIL CO. 112635 SMITH, ALICE B. 2 ARROYO ROJO (BALLARD) EXPRESS OIL CO. 138265 SMITH, JACK 1 WEESATCHE,WEST (HOLT SAND 10880) SUE-ANN OPERATING, L.C. 105753 SMITH, M. E. 1 FREEMAN (PETTUS 4600) SALT CREEK PRODUCTION, INC. 188222 SMITH, M. L. M. 4 ANNA BARRE (-J-) APEX ENERGY, INC. 111795 SMITH, MARY LEE 1 AMADOR (MIOCENE 800) WALLIS ENERGY, INC. 093829 SMITH, V. GAS UNIT 1 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 103566 SMITH, V. GAS UNIT 2 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167836 SMITH, WILCOX VIRGINIA P. GU 1 WORD, N. (J-33) CAPITAL STAR OIL & GAS, INC. 145903 SMOLIK 2 WORD, N. (8500) TRIO CONSULTING & MANAGEMENT,LLC 245469 SMOLIK 'A' 3 WORD N. (9300) TRIO CONSULTING & MANAGEMENT,LLC 257124 SMOLIK 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267656 SMOLIK 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267747 SMOLIK 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267748 SMOLIK 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 289996 SMOLIK 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 290084 SMOLIK 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 290085 SMOLIK 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 290094 SMOLIK, ALBERT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 101798 SMOLIK, ALBERT 2 WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 087460 SMOLIK, ALBERT 3 WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 096320 SMOLIK, ALBERT 4 WORD, N. (EDWARDS) FOUNDATION ENERGY MANAGEMENT LLC 101678 SMOTHERS 1 RENGER (WILCOX 7900) MERIT ENERGY COMPANY 213290 SMOTHERS 3 SPEAKS (3200) MOOSE OPERATING CO., INC. 174769 SMOTHERS 4 SPEAKS (2200) MOOSE OPERATING CO., INC. 170226 SOBOTIK, F. GAS UNIT #1 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 083971 SOBOTIK, F. GAS UNIT #1 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 088607 SOCONY MOBIL OIL COMPANY FEE 1 CLAYTON (BLOCK 86 SD) HEDRICK PRODUCTION INC. 107770 SOUTH TEXAS CHILDRENS HOME 1 MINERAL, NORTH (9750) WOFFORD, C. J. 101273 SOUTHERN STATES 1 SWINNEY SWITCH, EAST(YEGUA 6100) WELDER EXPLORATION & PROD., INC. 265526 SPACEK UNIT 1 HELEN GOHLKE (MIDDLE WILCOX) MAGNUM PRODUCING, LP 290069 SPACEK, FRANK 11 GANADO, WEST (5100) ALLEGIANT RESOURCES, LLC 158569 SPARKMAN, PORTER 1WI MINERAL, NORTH (9750) NOG PRODUCTION & OPERATING LLC 129066 SPEAR REYNOLDS UNIT A G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260033 SPEARY FAMILY TRUST UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268979 SPEARY FAMILY TRUST UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277538 SPEARY FAMILY TRUST UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277540


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SPEARY FAMILY TRUST UNIT A 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277547 SPEARY FAMILY TRUST UNIT A 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277728 SPEARY GAS UNIT 1 SPEARY (ROEDER 9100) P1 ENERGY, LLC 030566 SPECIAL 1 TYNAN, EAST (3100) GREAT TEXAS CRUDE INC. 178889 SPIEKERMAN, E. J. 1 SLIVA (2800) NEW HORIZON INVESTMENTS LTD. 164694 SPIEKERMAN, H. F. 1 SLIVA (3600) NEW HORIZON INVESTMENTS LTD. 004152 SPIELHAGEN, B. U. 14 BURNELL (WILCOX 7800) FLETCHER OPERATING, LLC 186468 SPIES, CLIFFORD F. G. U. #1 1 YORKTOWN, S (WILCOX 11100) MAGNUM PRODUCING, LP 053255 SPIES, CLIFFORD F. G. U. #1 2 YORKTOWN, S (WILCOX 11100) MAGNUM PRODUCING, LP 059225 SPIES, CLIFFORD F. G. U. #2 1 YORKTOWN, SOUTH (ROEDER) MAGNUM PRODUCING, LP 138470 SPILLER GAS UNIT 1R LONG MOTT, SOUTH (FRIO, UPPER) RAWHIDE OPERATING, INC. 166235 SPILLER, CLAUDIE 3 LONG MOTT, SOUTH (FRIO, LOWER) RAWHIDE OPERATING, INC. 059694 SPINDLETOP 2 NORMANNA (CONSOLIDATED) SPINDLETOP OIL & GAS COMPANY 220065 SPINDLETOP GAS UNIT 1 NORMANNA (CONSOLIDATED) GULFSTAR PROPERTIES, INC. 207222 SPINN UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266841 SPINN UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271443 SPRADLEY, G. B. 1 RAMIRENA, N. (PETTUS) ELLIOTT OIL & GAS OPERATING CO. 050159 SPRENCEL "A" UNIT 1H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287787 SPRENCEL "A" UNIT 2H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287809 SPRENCEL "A" UNIT 4H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 289758 SPRENCEL "A" UNIT 5H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287816 SPRENCEL "A" UNIT 6H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287818 SPRENCEL "B" UNIT 1H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287968 SPUR T GAS UNIT 2 KUESTER (WILCOX 8070) FINLEY RESOURCES, INC. 253882 ST. JOHNS HEIRS 1 WOODSBORO (BOENIG) M. E. OPERATING 041111 STACK, B. 2 LOLITA (MITCHELL ZONE) MCGOWAN WORKING PARTNERS, INC. 041834 STAFFORD 3 LA WARD, NE. (6800) OBLAEN RESOURCES LLC 279439 STANCH-BAR-CRAIN-FRAN A ULW A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288635 STANCH-BAR-CRAIN-FRAN ULW B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288914 STANCHOS A-P. CRAIN A USW A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289045 STANCHOS A-P. CRAIN A USW B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 289047 STANCHOS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268805 STANCHOS UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266876 STANCHOS UNIT A 10 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 288965 STANCHOS, VIOLA "A" 1 RUNGE, E. (HACKNEY) PROEX ENERGY MANAGEMENT, L.L.C. 222452 STANFORD, FRED S. 1 L TORO GRANDE (FB-A, 9200 SD.) BARCO OIL & GAS CO. 126345 STANFORD, FRED S. 1 U TORO GRANDE (FB-B, 8800 YEGUA) BARCO OIL & GAS CO. 126346 STANGE 1 F COLLETOVILLE CREEK (MIOCENE 1100 CML EXPLORATION, LLC 223485 STANGE 1D COLLETOVILLE CREEK (CATAH. 2450) CML EXPLORATION, LLC 250559 STAPLES 1 TULETA, N (WILCOX 9200) SAXUM OIL & GAS, LLC 219857 STAPLES, J. JR. 1 TULETA (4400) SAXUM OIL & GAS, LLC 175984 STAPLES, J. JR. 2 TULETA (4400) SAXUM OIL & GAS, LLC 194719 STAPLES, J. JR. 3 TULETA, SOUTH (1250) SAXUM OIL & GAS, LLC 214165 STAPLES, J. JR. 4 TULETA, SOUTH (2050) SAXUM OIL & GAS, LLC 213988 STARR-GUNN 1 HELM (PETTUS) WELDER EXPLORATION & PROD., INC. 278333 STATE OF TEXAS 33724 5AU POWDERHORN (3) BEP OPERATING, LLC 151394 STATE OF TEXAS 33724 18 POWDERHORN (3) BEP OPERATING, LLC 219040 STATE OF TEXAS 33724 19 POWDERHORN (5200 SAND) BEP OPERATING, LLC 187388 STATE TRACT -210- 6 GRASS ISLAND (FARWELL -R-) TORRENT OIL LLC 183621 STATE TRACT D 1 WILDCAT H T P PRODUCING COMPANY 230291 STATE TRACT 100 1 MOSQUITO POINT, N. (FRIO F) LAMAR OIL & GAS, INC. 266396


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ STATE TRACT 105 11 MATAGORDA BAY (2100) HIGH ISLAND GAS LLC 150659 STATE TRACT 106, S/2 1 MATAGORDA BAY (2600) HIGH ISLAND GAS LLC 184227 STATE TRACT 141 1 SOUTHPAW (MIOCENE 6000) COASTLAND OPERATIONS, LLC 174711 STATE TRACT 150 2 MATAGORDA BAY (BOL MEX) SONTERRA OPERATING, INC. 216125 STATE TRACT 150-1 1ST MATAGORDA BAY (BOL MEX) SONTERRA OPERATING, INC. 252274 STATE TRACT 209 1 APPLING, NORTH (MELBOURNE) CORUM OPERATING COMPANY, LLC 263470 STATE TRACT 224 1 GRASS ISLAND (SALURIA -D-) TORRENT OIL LLC 181012 STATE TRACT 254 1 APPLING DEEP, SW (FRIO) PROGENIES OPERATING LLC 217956 STATE TRACT 45 1 ZOLLER, EAST (FRIO -F-) GULF E&P LTD 185209 STATE TRACT 59 2 MAUDE B. TRAYLOR (F-41-61, DEEP) REMORA OPERATING, LLC 229647 STATE TRACT 596-L NE/4 3 SHERMAN OFFSHORE (1700) GULF ENERGY EXPLORATION CORP. 255449 STATE TRACT 629-L SW/4 1UT MATAGORDA BLOCK 629 (4300) WHITE MARLIN OPERATING CO, LLC 092197 STATE TRACT 629-L SW/4 4 MATAGORDA BLOCK 629 (4300) WHITE MARLIN OPERATING CO, LLC 106159 STATE TRACT 659-L NW/4 3 L MATAGORDA BLOCK 629 (PLAYA B) WHITE MARLIN OPERATING CO, LLC 157076 STATE TRACT 707-S 1 U SHERMAN OFFSHORE (3900) GULF ENERGY EXPLORATION CORP. 060757 STATE TRACT 72 1 SAN ANTONIO BAY, N. (D-3) CREST PETROLEUM, LLC 047204 STATE TRACT 720-S 2-L SHERMAN OFFSHORE, W. (4000) GULF ENERGY EXPLORATION CORP. 125218 STATE TRACT 720-S 2-U SHERMAN OFFSHORE, W.(1700 MIO.) GULF ENERGY EXPLORATION CORP. 149096 STATE TRACT 77 1 MAUDE B. TRAYLOR (7700) RINCON PETROLEUM CORPORATION 255118 STATE TRACT 89 2 PANTHER REEF, S.W. (FRIO H-2) NEUMIN PRODUCTION COMPANY 198833 STATE TRACT 89 002 PANTHER REEF, S.W. (FRIO G-3) LAMAR OIL & GAS, INC. 269199 STAUSS 1 HOCKLEY (3535) CHANDLER OIL & GAS, LLC 188810 STAUSS 1 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 232263 STAUSS 1 TULETA, W. (12910) BRITANCO, L.L.C. 244744 STAUSS 2 TULETA, WEST (VICKSBURG G) CHANDLER OIL & GAS, LLC 184659 STAUSS-NELSON 1 TULETA, WEST (VICKSBURG F) CHANDLER OIL & GAS, LLC 184290 STAUSS-NELSON 1 TULETA, WEST (VICKSBURG G) BRITANCO, L.L.C. 182555 STAUSS, IDA ET AL UNIT 1 C RAY-WILCOX (LULING) BRITANCO, L.L.C. 003860 STAUSS, IDA ET AL UNIT 1 T RAY-WILCOX (MASSIVE 1ST) BRITANCO, L.L.C. 003865 STAUSS, IDA ET AL UNIT 2 RAY-WILCOX (WALTON MASSIVE) BRITANCO, L.L.C. 003867 STCH 1 MARSHALL (FRIO 3000) MODERN EXPLORATION, INC. 205517 STEED, J. E. 5 BURNELL (SLICK) WELDER EXPLORATION & PROD., INC. 223076 STEELE PARTNERS B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264783 STEELE PARTNERS B 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281922 STEELE PARTNERS B 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281923 STEFANIE UNIT 1 DE WITT (EAGLE FORD SHALE) PENN VIRGINIA OIL & GAS, L.P. 263763 STEFFEK UNIT 1 BRESLAU (WILCOX 8395) MASCOT OIL COMPANY 266064 STEINDORF 1 WILDCAT ELLIOTT OIL & GAS OPERATING CO. 272354 STEINMAN 6 PROVIDENT CITY, NE (3050) TMR EXPLORATION, INC. 282712 STEINMAN 6 PROVIDENT CITY, NE. (3390) TMR EXPLORATION, INC. 247726 STEINMAN, ALFRED 2 PROVIDENT CITY (MIOCENE) TMR EXPLORATION, INC. 284755 STEINMAN, ALFRED 3 PROVIDENT CITY (MIOCENE 2040) TMR EXPLORATION, INC. 179363 STEINMANN 2H YOAKUM (EDWARDS) ATLAS OPERATING LLC 171588 STEINMANN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267475 STEINMANN A 2H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267476 STEINMANN ESTATE 1 BRUSHY CREEK (WILCOX -S-1-11200) BUFFCO PRODUCTION INC. 173808 STEINMANN ESTATE GAS UNIT #1 1 BRUSHY CREEK, S. (WILCOX 13900) BUFFCO PRODUCTION INC. 178808 STEINOCHER GAS UNIT 1 WORD, N. (7200) CAPITAL STAR OIL & GAS, INC. 149730 STERNBERG, MAGGIE 1 SPEAKS, S. (LOWER WILCOX) MERIT ENERGY COMPANY 198693 STEWART 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268511 STILES GAS UNIT 1 MORAY (EDWARDS) ENSIGN OPERATING LLC 236034


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ STILES GAS UNIT "A" 1 MORAY (EDWARDS) ENSIGN OPERATING LLC 237662 STILES GAS UNIT "A" NO 1 2 MORAY (EDWARDS) ENSIGN OPERATING LLC 245441 STILES GAS UNIT NO 1 3 MORAY (EDWARDS) ENSIGN OPERATING LLC 252026 STOCKTON GAS UNIT 1 REA-GOL (13300 SD) GAITHER PETROLEUM CORPORATION 241167 STOCKTON GAS UNIT 1 1 PAWNEE (EDWARDS) REPSOL OIL & GAS USA, LLC 250361 STOLDT 1 ANNA BARRE, N. (YEGUA 5260) A & D EXPLORATION COMPANY 176165 STOLTE GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 265096 STOLTZFUS 6 TULETA, WEST (3300) STAPLES, JAMES W. PROD. CO. 118371 STOLTZFUS, C. B. 3 FORTITUDE (800) TYLER, EARL W. 069941 STOVALL 1 CRANDALL RUBIE (WILCOX CONS.) CONTANGO RESOURCES, INC. 200146 STOVALL 2 CRANDALL RUBIE (MAGNOLIA) CONTANGO RESOURCES, INC. 192576 STOVALL 3 CRANDALL RUBIE (WILCOX CONS.) CONTANGO RESOURCES, INC. 221466 STRADER UNIT 1 RUDMAN (CANNAN SD. 9720) FLETCHER OPERATING, LLC 228741 STRAUBE UNIT 1H KAWITT (EDWARDS) REPSOL OIL & GAS USA, LLC 219963 STRAUBE UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266780 STRAUBE UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 269503 STRAUBE UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 278311 STRAUBE UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284223 STRAUBE UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 283180 STRAUBE UNIT A 6 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 283370 STRAUBE UNIT A 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 284577 STRAUBE 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 261038 STRAUBE 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 268667 STRAUBE 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280511 STRAUBE 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280458 STRAUBE 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280384 STRAUBE 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280385 STRAUBE 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280505 STRAUCH 1 STRAUCH-WILCOX (9600) FLETCHER OPERATING, LLC 245917 STRAUCH 1 STRAUCH-WILCOX (10800) FLETCHER OPERATING, LLC 213963 STRAUSS 24 MAURBRO (PRITCHETT) KD ENERGY, LLC 256612 STRENK A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265469 STRENK A 10H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 282727 STRENK A 12H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283126 STRENK A 14H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 283135 STRIDDE-SMITH GAS UNIT 1 GOEBEL (9600) KALER ENERGY CORP. 255446 STRIEBECK, W. H. JR. 1 L ELMS (SLICK, LOWER) OMEGA ENERGY, LLC 001519 STRIEBECK, W. H. JR. 1 U ELMS (SLICK, UPPER) OMEGA ENERGY, LLC 001516 STRIEBER 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 264856 STRIKE TWO 1 CHOATE, S. (WILCOX 8500) MARWELL PETROLEUM LTD PARTNRSHIP 179407 STRMISKA GAS UNIT 1 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 271606 STRMISKA GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 271126 STRMISKA GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280380 STRMISKA GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 279834 STRMISKA GAS UNIT 1 B 3H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 280392 STRMISKA GAS UNIT 1 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 280184 STRONG GAS UNIT 1 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 164492 STRONG GAS UNIT 2 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 169126 STRONG GAS UNIT 3 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 166374 STRONG GAS UNIT 4 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 169254 STRONG GAS UNIT 6 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 190858


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ STRONG GAS UNIT 8 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 192192 STRONG GAS UNIT 9 BEGO (CONSOLIDATED) TRANSPACIFIC ENERGY, LLC 203413 STULGIS A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 265508 SUGAR -A- 1 YOUGEEN, WEST (3800) SUGAREK FARMS 100764 SUGAREK 1 WILDCAT OMEGA ENERGY, LLC 151640 SUGAREK 2 YOUGEEN (STILLWELL 4100) OMEGA ENERGY, LLC 157889 SUGAREK 3 YOUGEEN (STILLWELL 4100) OMEGA ENERGY, LLC 159364 SUGAREK, ED 1 YOUGEEN (STILLWELL 4150) WELDER EXPLORATION & PROD., INC. 269316 SULLIVAN UNIT 8 MAXINE, EAST (9100) GOUGER OIL COMPANY, LLC 221029 SULLIVAN UNIT 10 MAXINE, EAST (9100) GOUGER OIL COMPANY, LLC 149025 SULLIVAN UNIT 11 MAXINE, EAST (8700) GOUGER OIL COMPANY, LLC 149739 SULLIVAN UNIT 12 MAXINE, EAST (9100) GOUGER OIL COMPANY, LLC 250834 SULLIVAN UNIT 13T MAXINE, EAST (8700) GOUGER OIL COMPANY, LLC 138099 SULLIVAN, JAMES D. 9 MAXINE, EAST (8700) GOUGER OIL COMPANY, LLC 146943 SUSTR, JIM J. UNIT 1 MOULTON (JACKSON) SOUTHERN OIL & GAS CO, LTD. 075225 SWAN SEALE 1 SWAN LAKE (8700, FB-W) ACOCK/ANAQUA OPERATING CO., LP 280160 SWANSON ET AL 2A TEXAM (COLE) ORIGIN PRODUCTION GROUP LLC 123680 SWETLICK 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268916 SWICKHEIMER 2 JOBAR (YEGUA) TIDEWATER MINERALS CORPORATION 168737 SWICKHEIMER A 1 BEGO (CONSOLIDATED) BLAKENERGY OPERATING, LLC 178738 SWICKHEIMER, G. G. ESTATE 1 AUSTIN (NITA) TRANSPACIFIC ENERGY, LLC 186780 SWIERC 3 TOM LYNE, EAST (BASAL LULING) D90 ENERGY, LLC 249432 SWIERC G. U. 1-C TOM LYNE, EAST (WILCOX 8400) D90 ENERGY, LLC 161997 SWIERC G. U. 1T TOM LYNE, EAST (SLICK) D90 ENERGY, LLC 193210 SWIERC G. U. 2 TOM LYNE (LULING 8800 EAST) D90 ENERGY, LLC 178849 SWIERC G.U. 4 TOM LYNNE, EAST (1ST MAS. STRGR) D90 ENERGY, LLC 217640 SWIERC SWD 1 TOM LYNE (LULING 8800) D90 ENERGY, LLC 187063 SWIFT UNIT 1 BEEVILLE, NORTH (YEGUA 4900) HEADWATERS ENERGY PARTNERS, LLC 279048 SWISHER 1 COQUAT (12700) PROLINE ENERGY RESOURCES INC 240703 SYRING, R. J. 2 KENEDY, CENTRAL (EDWARDS) JONES, EDWIN M. OIL CO. 134421 T BIRD UNIT 1H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 260636 T BIRD UNIT 2H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 271336 T BIRD UNIT 3H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 271350 T BIRD UNIT 4H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 271348 T BIRD UNIT 5H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 271442 T BIRD UNIT 6H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 277790 T BIRD UNIT 7H SUGARKANE (EAGLE FORD) LONESTAR OPERATING, LLC 277791 T. L. G. 1 BERCLAIR (LULING) WELDER EXPLORATION & PROD., INC. 203164 T.K.E. UNIT 1 TOM LYNE, NE. (HOCKLEY E) AWP OPERATING COMPANY 239144 T.L.G. 2 WILDCAT WELDER EXPLORATION & PROD., INC. 263804 T-C OIL CO. -O'CONNOR 65 LAKE PASTURE (E-279) T-C OIL COMPANY, LLC 261265 T-C OIL CO. -O'CONNOR 65 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 225512 T-C OIL CO.-O'CONNER 30 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 189304 T-C OIL CO.-O'CONNOR 3 LAKE PASTURE (FS-545) T-C OIL COMPANY, LLC 194589 T-C OIL CO.-O'CONNOR 63 LAKE PASTURE (L-202) T-C OIL COMPANY, LLC 239367 T-C OIL CO.-O'CONNOR 84 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 222237 T-C OIL CO.-OCONNOR 21 LAKE PASTURE (FS-503) T-C OIL COMPANY, LLC 002595 T-C OIL CO.-OCONNOR 44 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 061345 T-C OIL CO.-OCONNOR 60 LAKE PASTURE (M-330) T-C OIL COMPANY, LLC 114875 T-C OIL CO.-OCONNOR 64 LAKE PASTURE (FS-503) T-C OIL COMPANY, LLC 126467 T-C OIL COMPANY-O'CONNOR 4-L LAKE PASTURE (FS-545) T-C OIL COMPANY, LLC 138805


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ T-C OIL COMPANY-O'CONNOR 4-U LAKE PASTURE (FS-523) T-C OIL COMPANY, LLC 138332 TABOR GAS UNIT 1 PORTER, N. (REKLAW) BAY ROCK OPERATING COMPANY 059484 TALK GAS UNIT 2 MALO DOMINGO (TALK D) WHITE MARLIN OPERATING CO, LLC 109272 TALK GAS UNIT 2 MALO DOMINGO (WILCOX 10650) WHITE MARLIN OPERATING CO, LLC 280888 TALK GAS UNIT 2 MALO DOMINGO (WILCOX 10800) WHITE MARLIN OPERATING CO, LLC 280868 TAYLOR 1 POWDER RIVER (CONSOLIDATED) CXL ENERGY LLC 226432 TAYLOR 2 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 226479 TAYLOR FARMS, INC. 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260245 TAYLOR FARMS, INC. 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272307 TAYLOR FARMS, INC. 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277535 TAYLOR FARMS, INC. 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277536 TE KENEDY SWD 1 SUGARKANE (EAGLE FORD) PILOT WATER SOLUTIONS SWD LLC 265860 TECHNIK 5 CAMPBELL CREEK (9700) INLAND OCEAN, INC. 271492 TECHNIK 6 CAMPBELL CREEK (9700) INLAND OCEAN, INC. 279465 TECHNIK, JULIUS UNIT #2 2 CHARLIE DAUBERT (9700) INLAND OCEAN, INC. 121019 TEN CATE 2 C LOLITA (5800) MCGOWAN WORKING PARTNERS, INC. 002650 TERRELL 1 DALLAS HUSKY, NE. (MACKHANK) CML EXPLORATION, LLC 257555 TERRELL -B- 7 COLETTO CREEK (2600) PETRA OLEUM CORP. 200071 TERRELL -B- 10 COLETTO CREEK (2350) PETRA OLEUM CORP. 274359 TERRELL A 6 COLETTO CREEK (4550) PETRA OLEUM CORP. 138313 TERRELL, ETTA "A" 17 TERRELL POINT (4050) RINCON PETROLEUM CORPORATION 177212 TERRELL, ETTA C. 4 COLETTO CREEK (2300) PETRA OLEUM CORP. 202781 TERRELL, ETTA E 16 COLETTO CREEK (4550) PETRA OLEUM CORP. 221969 TERRY-GOTT 1D CLARKS CREEK (MIOCENE) STRATCO OPERATING CO., INC. 229756 TERRY-GOTT GAS UNIT 2 HOPE (VICKSBURG 3200) STRATCO OPERATING CO., INC. 228063 TERRY-GUTIERREZ UNIT 2 HOPE, NE. (1100) STRATCO OPERATING CO., INC. 238232 TEXACO PEL-TEX SCHREINER TRUST 1 SHARONLEE, N.E. (SLIGO) WAGNER OIL COMPANY 122850 TEXACO-PEL-TEX BLANCHE HERRING 1 SHARONLEE (SLIGO) UMMA RESOURCES, LLC 117743 THIELE GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 267309 THIEME 1 MEYERSVILLE, E. (3000) ARCH OIL & GAS, LLC 175416 THIEME 3 MEYERSVILLE, E. (3100) ARCH OIL & GAS, LLC 184333 THIEME GAS UNIT 1 1A SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 257844 THIEME GAS UNIT 1 1H MORAY (EDWARDS) ENSIGN OPERATING LLC 262900 THIEME GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266142 THIEME GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 267630 THOMAS DUHON UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286010 THOMAS O'CONNOR 17 GRETA (3490) GRETA OPERATING COMPANY LLC 285166 THOMAS O'CONNOR -C- 41 TOM OCONNOR (5500 SAND) HILCORP ENERGY COMPANY 282400 THOMAS O'CONNOR 'A' 71 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 271491 THOMAS O'CONNOR 'C' 48 TOM OCONNOR (5250) HILCORP ENERGY COMPANY 281113 THOMAS O'CONNOR "B" 32 MARY ELLEN OCONNOR (FT-18 SAND) HILCORP ENERGY COMPANY 257764 THOMAS O'CONNOR "C" 50 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 267124 THOMAS O'CONNOR "C" 66 GRETA (L-10) HILCORP ENERGY COMPANY 261017 THOMAS, ANNE 4 WEESATCHE,WEST (HOLT SAND 10880) KEBO OIL & GAS, INC. 108593 THOMAS, ANNE 5 WEESATCHE, WEST (10700) KEBO OIL & GAS, INC. 113191 THOMAS, ANNE FRIAR 1 WILDCAT FLETCHER OPERATING, LLC 248630 THOMAS, ANNE FRIAR 1 KOENIG, NORTH (10,800) FLETCHER OPERATING, LLC 289536 THREE RIVERS GAS UNIT 1 1 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 262915 THREE RIVERS GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 267564 THREE RIVERS SWD 2 THREE RIVERS (EDWARDS) ENSIGN OPERATING LLC 237846 THREE SISTERS 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 259504


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ THREE SISTERS 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267710 THREE SISTERS 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267862 THREE SISTERS 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267864 THREE SISTERS 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266605 THREE SISTERS 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268690 THREE SISTERS 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 265494 THREE SISTERS 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268550 THREE SISTERS 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 267708 THREE SISTERS 01 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269581 THREE SISTERS 01 11H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268743 THREE SISTERS 01 12H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268740 THREE SISTERS 01 13H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268739 THREE SISTERS 01 14H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268653 THREE SISTERS 01 15H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273532 THREE SISTERS 01 16H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273705 THREE SISTERS 01 17H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273013 THREE SISTERS 01 18H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 273488 THREE SISTERS 01 19H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278973 THREE SISTERS 01 20H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 275851 THREE SISTERS 01 21H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 275247 THREE SISTERS 01 22H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276908 THREE SISTERS 01 23H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276822 THREE SISTERS 01 24H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276909 THREE SISTERS 01 25H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276915 THREE SISTERS 01 26H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276916 THREE SISTERS 01 27H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276991 THREE SISTERS 01 29H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284182 THREE SISTERS 01 30H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 284091 THREE SISTERS 01 34H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281147 THREE SISTERS 01 35H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281177 THREE SISTERS 01 37H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281098 THREE SISTERS 01 38H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281242 THREE SISTERS 01 39H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281138 THREE SISTERS 01 40H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281142 THREE SISTERS 01 43H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 286619 THREE SISTERS 01 45H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 287797 THUNDERBIRD 1 R BIG 12 (11,900) SUE-ANN OPERATING, L.C. 246671 THWING GAS UNIT 1 OCONNOR RANCH (FRIO CONS.) AMERICO ENERGY RESOURCES, LLC 198541 TIETZ 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 270914 TINDOL UNIT 1 GEORGE WEST, WEST (10430) KAISER-FRANCIS OIL COMPANY 111972 TIPTON 2 ORD (WILCOX J-1 SAND) MAGNUM PRODUCING, LP 189915 TIPTON, IDA E. 2 BOYCE (RECKLAW) ESTATE OF JAMES L. NELSON 000972 TITTIZER 2 TORO GRANDE (9000 SD) MARQUEE CORPORATION 277478 TITTIZER UNIT 1 TORO GRANDE (8700 SD) MARQUEE CORPORATION 273436 TOLLET, CHAS. 2 BERCLAIR (2100) WOLFE, HAROLD E. 000847 TOM LYNE 3 TOM LYNE, N. (WILCOX 10,700) REMORA OPERATING, LLC 190179 TOM O'CONNOR(5600 FOOT SAND)UNIT W203B TOM O'CONNOR (5600 FOOT SAND) HILCORP ENERGY COMPANY 192700 TOM O'CONNOR(5600 FOOT SAND)UNIT W523B TOM O'CONNOR (5600 FOOT SAND) HILCORP ENERGY COMPANY 282265 TOM OCONNOR (5800) FIELD UNIT Q842W GRETA (L- 2) HILCORP ENERGY COMPANY 087746 TOM-HOLLAND 1 TYNAN (1300) GULF SANDS OIL CO. 127298 TOM, BETTY 1 TYNAN (2520) CHP OIL & GAS COMPANY, L.C. 143157


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ TOMASEK GAS UNIT 1 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 003546 TOMASEK GAS UNIT 3 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 141991 TOMASEK GAS UNIT 3SW PAWNEE (EDWARDS) ENSIGN OPERATING LLC 237844 TOMASEK GAS UNIT 4 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 147064 TOMASEK GAS UNIT 5 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 178453 TOMASEK GAS UNIT 6 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 180893 TOMASEK GAS UNIT 7 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 185265 TOMASEK GAS UNIT 9 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 253305 TOMASEK GAS UNIT 10 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 247126 TOMASEK GAS UNIT 11 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 249344 TOMASEK GU 8 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 220284 TONEY, M. H. 36D WEST RANCH (3800) HILCORP ENERGY COMPANY 237557 TONEY, M. H. 77 D WEST RANCH (WARD) HILCORP ENERGY COMPANY 069560 TONEY, M. H. MRS. 73 WEST RANCH (WARD) HILCORP ENERGY COMPANY 233537 TONEY, M. H., MRS. 82 D WEST RANCH (TONEY) HILCORP ENERGY COMPANY 253229 TONEY, MRS. M. H. 20 WEST RANCH (3470) HILCORP ENERGY COMPANY 100627 TOSTENSON GAS UNIT 3 TULETA, WEST (HOCKLEY 3100) BRITANCO, L.L.C. 273603 TOSTENSON, A. O. UNIT #1 1 TULETA-WILCOX, SOUTH (LULING) BRITANCO, L.L.C. 004505 TPR SCHOVAJASA "A" 1 PLACEDO (6700) ALLEGIANT RESOURCES, LLC 210505 TRAYLOR 1 PROVIDENT CITY (WILCOX 8,800) B D PRODUCTION CO., INC. 126973 TRAYLOR ESTATE 1 EL TORO BUENO (AY-3) FAULCONER, VERNON E., INC. 239970 TRAYLOR-MILLER 1 PROVIDENT CITY (MIOCENE 2040) TMR EXPLORATION, INC. 283323 TRAYLOR-MILLER 2 PROVIDENT CITY (YEGUA -P-) TMR EXPLORATION, INC. 194124 TRAYLOR, A.V. 9 PROVIDENT CITY (YEGUA L) TMR EXPLORATION, INC. 139511 TRAYLOR, ALMA V. 2 PROVIDENT CITY (FRIO 3100) TMR EXPLORATION, INC. 170653 TRAYLOR, ALMA V. 6 PROVIDENT CITY (FRIO 3410) TMR EXPLORATION, INC. 170625 TRAYLOR, ALMA V. 7 PROVIDENT CITY (FRIO 2610) TMR EXPLORATION, INC. 282246 TRAYLOR, M. B., EST. 3 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 233313 TRAYLOR, M.B. "B" 5 MAUDE B. TRAYLOR, CENTRAL (40) ALLEGIANT RESOURCES, LLC 158527 TRAYLOR, M.B. EST. 2 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 127387 TRAYLOR, M.B. ESTATE 1 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 154264 TRAYLOR, M.B., EST. 2 MAUDE B. TRAYLOR (8150 SAND) WHITE MARLIN OPERATING CO, LLC 237206 TRAYLOR, MAUDE 14 MAUDE B. TRAYLOR, NORTH (30) ALLEGIANT RESOURCES, LLC 210541 TRAYLOR, MAUDE A 1 MAUDE B. TRAYLOR (F-41-61, DEEP) REMORA OPERATING, LLC 225770 TRAYLOR, MAUDE A 2 MAUDE B. TRAYLOR (F-41-61, DEEP) REMORA OPERATING, LLC 226803 TRAYLOR, MAUDE A 3ST MAUDE B. TRAYLOR (F-41-61, DEEP) REMORA OPERATING, LLC 239220 TRAYLOR, MAUDE B 3 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 230380 TRAYLOR, MAUDE B 4 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 248874 TRAYLOR, MAUDE B. 1 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 106827 TRAYLOR, MAUDE B. 1 MAUDE B. TRAYLOR, NORTH (43) ALLEGIANT RESOURCES, LLC 129631 TRAYLOR, MAUDE B. 3 MAUDE B. TRAYLOR, NORTH (85) ALLEGIANT RESOURCES, LLC 157815 TRAYLOR, MAUDE B. 6 MAUDE B. TRAYLOR (7200) WAGNER OIL COMPANY 046118 TRAYLOR, MAUDE B. 7 MAUDE B. TRAYLOR, NORTH (28) ALLEGIANT RESOURCES, LLC 061402 TRAYLOR, MAUDE B. 9 MAUDE B. TRAYLOR (7500) WAGNER OIL COMPANY 203117 TRAYLOR, MAUDE B. 10 MAUDE B. TRAYLOR, NORTH (40) ALLEGIANT RESOURCES, LLC 133415 TRAYLOR, MAUDE B. 12 MAUDE B. TRAYLOR, NORTH (43) ALLEGIANT RESOURCES, LLC 200557 TRAYLOR, MAUDE B. 13 MAUDE B. TRAYLOR, NORTH (80) ALLEGIANT RESOURCES, LLC 151098 TRAYLOR, MAUDE B. 25 OLIVIA (7500, UPPER) WAGNER OIL COMPANY 202247 TRAYLOR, MAUDE B. 26 MAUDE B. TRAYLOR (8300 SAND) WAGNER OIL COMPANY 283378 TRAYLOR, MAUDE B. 27-L MAUDE B. TRAYLOR (F-41-61, DEEP) WAGNER OIL COMPANY 148603 TRAYLOR, MAUDE B. 29 MAUDE B. TRAYLOR (7700) WAGNER OIL COMPANY 198232


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ TRAYLOR, MAUDE B. 30 MAUDE B. TRAYLOR (7700) WAGNER OIL COMPANY 181999 TRAYLOR, MAUDE B. 30C MAUDE B. TRAYLOR, S. (BECK, LO.) WAGNER OIL COMPANY 162579 TRAYLOR, MAUDE B. 36 MAUDE B. TRAYLOR (F-41-61, DEEP) WAGNER OIL COMPANY 166338 TRAYLOR, MAUDE B. 39 MAUDE B. TRAYLOR (7700) WAGNER OIL COMPANY 211823 TRAYLOR, MAUDE B. 42 MAUDE B. TRAYLOR (F-41-61, DEEP) WAGNER OIL COMPANY 232884 TRAYLOR, MAUDE B. 45 MAUDE B. TRAYLOR (OATS) WAGNER OIL COMPANY 256605 TRAYLOR, MAUDE B. "B" 8 MAUDE B. TRAYLOR (F-41-61, DEEP) ALLEGIANT RESOURCES, LLC 233750 TRAYLOR, MAUDE B. "B" 10 MAUDE B. TRAYLOR (F-41-61, DEEP) ALLEGIANT RESOURCES, LLC 248628 TRAYLOR, MAUDE B. "B" B 6 MAUDE B. TRAYLOR, NORTH (44) ALLEGIANT RESOURCES, LLC 168333 TRAYLOR, MAUDE B. MRS. 7 MAUDE B. TRAYLOR (F-41-61, DEEP) REMORA OPERATING, LLC 119772 TRAYLOR, T. P. -B- 4 HEYSER (4400) C.W. PICKERING, INC. 046943 TRAYLOR, T. P. -B- 5 HEYSER (4400) C.W. PICKERING, INC. 055750 TRAYLOR, T. P. -B- 7 HEYSER (4300) MCGOWAN WORKING PARTNERS, INC. 002092 TRAYLOR, T. P. -B- 8 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 091185 TRAYLOR, T. P. -B- 20 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089901 TRAYLOR, T. P. -B- 21 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 044114 TRAYLOR, T. P. -B- 26 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089903 TRAYLOR, T. P. -B- 59 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089906 TRAYLOR, T. P. -B- (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 090796 TRAYLOR, T. P. ETAL "B" 58 HEYSER MCGOWAN WORKING PARTNERS, INC. 168255 TRAYLOR, W. L. "D" 8 MAUDE B. TRAYLOR, NORTH (28) ALLEGIANT RESOURCES, LLC 231336 TREVINO 1 REFUGIO OLD (5300) MISSION RIVER SYSTEMS, INC. 177961 TRIAL 1 FRED LONG (HOCKLEY 3850) HEADWATERS ENERGY PARTNERS, LLC 281213 TRIAL 2 NORBEE (HOCKLEY 3700) HEADWATERS ENERGY PARTNERS, LLC 257813 TRIAL UNIT 3 BEEVILLE, NORTH (2150) HEADWATERS ENERGY PARTNERS, LLC 282179 TRULL 3 SPEAKS, SW. (3400) COASTAL PLAINS ENERGY, INC. 189315 TRULL 4 SPEAKS, SW. (FRIO) COASTAL PLAINS ENERGY, INC. 221823 TRULL 5 SPEAKS, S.W. (3600) COASTAL PLAINS ENERGY, INC. 221820 TRULL GAS UNIT 1 FRANCITAS (FRIO 8600) DALLAS PETROLEUM GROUP, LLC 281245 TRULL, B. W. 1 SPEAKS, SW. (WILCOX -A-) COASTAL PLAINS ENERGY, INC. 004205 TRULL, B. W. 2 SPEAKS, SW. (WILCOX -A-) COASTAL PLAINS ENERGY, INC. 117922 TRULL, R.B. 3 CARANCAHUA CREEK, E (MIOCENE B) PROLINE ENERGY RESOURCES INC 073374 TULLIS 1 TOM LYNE, NE (SLICK) AWP OPERATING COMPANY 219633 TULLIS 1 C TOM LYNE NE. (HOCKLEY) AWP OPERATING COMPANY 076878 TULLIS -C- 1 TOM LYNE NE. (HOCKLEY) AWP OPERATING COMPANY 070191 TULLIS 216 3 TOM LYNE, NE. (HOCKLEY E) AWP OPERATING COMPANY 280831 TULSITA RAY 94 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 275680 TUMLINSON 1 BEGO (CONSOLIDATED) BLAKENERGY OPERATING, LLC 224197 TUNISON, F. V. NCT-1 17 MAYO (5300 FRIO) KD ENERGY, LLC 030585 TUNISON, F. V. NCT-1 19F GANADO (3900) KD ENERGY, LLC 096099 TUNISON, F. V. NCT-1 22F GANADO (4000) KD ENERGY, LLC 181982 TUNISON, F.V. NCT-1 22 H GANADO (4170) KD ENERGY, LLC 092873 TUNISON, F.V. NCT-1 27 GANADO (3900) KD ENERGY, LLC 093193 TURNBOW 1 RUDMAN (CANNAN SD. 9720) BRAZOS PRODUCTION SERVICES, INC. 164433 TURNBOW 2 RUDMAN (CANNAN SD. 9720) FLETCHER OPERATING, LLC 229400 TURNBULL UNIT A 10H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289308 TURNBULL UNIT A 11H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289129 TURNBULL UNIT B 2H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286292 TURNBULL UNIT D 18H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 270840 TURNBULL UNIT E 5H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289134 TURNBULL UNIT G 15H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289312


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ TURNBULL UNIT H 14H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289311 TURNER GAS UNIT 3 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 191433 TURNER GAS UNIT 3 YOAKUM (DEERSLAYER SAND) UNIT PETROLEUM COMPANY 224970 TURNER GAS UNIT 5 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 196809 TURNER GAS UNIT 8 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 205878 TURNER GAS UNIT 9 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 214410 TURNER GAS UNIT 13 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 232931 TURNER GU 7 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 202563 TURNER GU 10 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 215298 TURNER GU 11 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 221105 TURNER GU 12 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 220292 TURNER UNIT 1 YOAKUM (WILCOX 8300) UNIT PETROLEUM COMPANY 132395 TURNER, E. A. "D" 3 WEST RANCH (FRIO 383) ALLEGIANT RESOURCES, LLC 172144 TURNER, S. E. GAS UNIT 2 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 069021 TUSA, T. S. 1 PROVIDENT CITY (FRIO -A-) TMR EXPLORATION, INC. 145100 TUSA, T. S. 2 PROVIDENT CITY (FRIO -A-) TMR EXPLORATION, INC. 157153 TUSA, T. S. 4 PROVIDENT CITY (FRIO -A-) TMR EXPLORATION, INC. 168734 TUSA, T. S. JR. 1 PROVIDENT CITY (WILCOX 11,900) TMR EXPLORATION, INC. 170003 ULCAK-EDWARDS GAS UNIT 1 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 095081 ULRICH A EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 291023 ULRICH A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264531 ULRICH A 4H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 291022 ULRICH A 7H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 291020 UNDERWOOD ESTATE 1 SUBLIME, WEST (MIDWAY, U.) BALLARD EXPLORATION COMPANY,INC. 269437 UNION 1 HOPE (FRIO 2950) GARRISON LTD. 245572 UNITAS, RUTH 1 GEORGE WEST, EAST (QUEEN CITY) PROLINE ENERGY RESOURCES INC 195910 UNITED SWD 2R SPEAKS, S.W. (2600) CONTANGO RESOURCES, INC. 192228 UNLIMITED RESOURCES 2 CLAYTON, NORTH (5780 SLICK) WEBB COUNTY UNLIMITED RES., LLC 265264 UPCHURCH 1 SPEAKS, SW. (RAINBOW) CONTANGO RESOURCES, INC. 169365 UPCHURCH, Z. 1 SPEAKS, SW. (WILCOX -A-) COASTAL PLAINS ENERGY, INC. 004204 URBAN-FOERSTER UNIT 1 POEHLER (SLICK-WILCOX 8000) ESTATE OF JAMES L. NELSON 089214 URBANCZYK A#1 1 PERSON (EDWARDS) MISSION RIVER SYSTEMS, INC. 180212 URRUTIA UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 260389 URRUTIA UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277687 URRUTIA UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280333 URRUTIA UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280546 URRUTIA UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280336 URRUTIA UNIT 501H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280335 URRUTIA UNIT 502H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280337 URRUTIA UNIT 506H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 280334 URRUTIA UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280467 URRUTIA UNIT AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280405 URRUTIA UNIT AC 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 289285 URRUTIA UNIT AC 5H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 280406 USZYNSKI GAS UNIT 1 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 256606 USZYNSKI-FURLOW (SA) B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 277351 USZYNSKI-FURLOW (SA) C 1 C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 285815 USZYNSKI-FURLOW (SA) C 2 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 286086 USZYNSKI-FURLOW (SA) C 3 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 285992 USZYNSKI-FURLOW (SA) C 4 C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 286133 USZYNSKI-FURLOW (SA) D1 D 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283667


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ USZYNSKI-FURLOW (SA) D2 D 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283546 USZYNSKI-FURLOW (SA) D3 D 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283404 USZYNSKI-FURLOW (SA) D4 D 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 283406 VANDENBERG & HILL 16 PLACEDO, EAST (5200) ACOCK/ANAQUA OPERATING CO., LP 095769 VANDENBERG & HILL 20 PLACEDO, EAST (4000) ACOCK/ANAQUA OPERATING CO., LP 134425 VANDENBERG & HILL 29 PLACEDO, EAST (5200) ACOCK/ANAQUA OPERATING CO., LP 192156 VANDENBERG & HILL 34 PLACEDO, EAST ACOCK/ANAQUA OPERATING CO., LP 205532 VANDENBERG & HILL 36 PLACEDO, EAST (5500 A) ACOCK/ANAQUA OPERATING CO., LP 281946 VANDENBERG & HILL 37 PLACEDO, EAST (5840) ACOCK/ANAQUA OPERATING CO., LP 211328 VANDENBERG, M. T. 11 HEYSER (2670 SAND) MCGOWAN WORKING PARTNERS, INC. 101559 VANDENBERGE & HILL 6 PLACEDO, EAST (3525) ACOCK/ANAQUA OPERATING CO., LP 106152 VANDENBERGE & HILL 10 PLACEDO (5300 SINTON) ACOCK/ANAQUA OPERATING CO., LP 145173 VANDENBERGE & HILL 11 PLACEDO, EAST (4000) ACOCK/ANAQUA OPERATING CO., LP 149145 VANDENBERGE & HILL 42 PLACEDO, EAST (6400) ACOCK/ANAQUA OPERATING CO., LP 290858 VANDENBERGE & HILL 48 PLACEDO, EAST (5500 A) ACOCK/ANAQUA OPERATING CO., LP 290708 VANDENBERGE & HILL SWD 30R PLACEDO, EAST (4700) ACOCK/ANAQUA OPERATING CO., LP 265345 VANDENBERGE, M. T. 12 HEYSER (F-37) MCGOWAN WORKING PARTNERS, INC. 088641 VANDENBERGE, M.T. 14 HEYSER (F-37) MCGOWAN WORKING PARTNERS, INC. 130359 VANDERBILT STATE 2 WEST RANCH (MITCHELL) HILCORP ENERGY COMPANY 061563 VANDERBILT STATE 17 WILDCAT HILCORP ENERGY COMPANY 155704 VANDERBILT STATE 28 WEST RANCH (BENNVIEW, NE.) HILCORP ENERGY COMPANY 184249 VANDERBILT STATE -B- 7 WEST RANCH (WARD) HILCORP ENERGY COMPANY 207291 VANDERBILT STATE -B- 10 WEST RANCH (FRIO 383) HILCORP ENERGY COMPANY 254348 VAQUERO 1 ROB WELDER (WILCOX 9100) PROLINE ENERGY RESOURCES INC 252942 VAQUERO "A" A 2 WELDER RANCH PROLINE ENERGY RESOURCES INC 252483 VASBINDER A AC 1H SUGARKANE (AUSTIN CHALK) DEVON ENERGY PRODUCTION CO, L.P. 287442 VESELY 1 DRY HOLLOW (13,900 WILCOX) MERIT ENERGY COMPANY 198767 VESELY GU 1 2 WILDCAT MERIT ENERGY COMPANY 281974 VESELY GU 1 2 DRY HOLLOW (WILCOX MIDDLE) MERIT ENERGY COMPANY 281585 VICKERS GAS UNIT 1 A 1H DE WITT (EAGLE FORD SHALE) REPSOL OIL & GAS USA, LLC 268217 VICTORIA REGIONAL AIRPORT 1 TELFERNER (4600) FIELD PETROLEUM CORP. 184371 VICTORIA REGIONAL AIRPORT 3 TELFERNER (4600) FIELD PETROLEUM CORP. 192017 VIDAURI "F" 10 VIDAURI (5800) CHARRO OPERATING, L.L.C. 281767 VIDAURI "F" 25 GRETA, NORTH (6500 SD.) CHARRO OPERATING, L.L.C. 244750 VIKING 2 SPEAKS, SW. (WILCOX 11,200) MARQUEE CORPORATION 257143 VINCENT, KENNETH Z. 2 VIDAURI, WEST (4800) VANCE, S.R. 004593 VINCIK, ADOLPH 1 EL TORO, SW. (5830) OSYKA PERMIAN, LLC 177898 VINCIK, ADOLPH 2 L EL TORO, SW. (7000) OSYKA PERMIAN, LLC 053761 VIVIAN BORCHERS UNIT 2 14 BENBOW (LOWER WILCOX A) HYDROCARBON OPERATING, INC. 245250 VOELKEL 1 WARMSLEY (VAUGHN) FLETCHER OPERATING, LLC 229653 VOELKEL 2 NORDHEIM (PETTUS) FLETCHER OPERATING, LLC 246694 VOELKEL GAS UNIT 2H WARMSLEY, S. (10550) FAULCONER, VERNON E., INC. 246892 VON ROSENBERG, MONTE GAS UNIT 1D WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 077595 VON ROSENBERG, MONTE GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 074545 VON ROSENBERG, MONTE GAS UNIT #1 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 076036 VON ROSENBERG, MONTE GAS UNIT #1 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 097122 VON ROSENBERG, MONTE GAS UNIT #1 6 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 113561 VON ROSENBERG, MONTE GAS UNIT 1 10 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 135009 W. A. BLACKWELL GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 273093 W. J. FOX 'A' 16 REFUGIO-FOX (4600) HILCORP ENERGY COMPANY 287621 W. J. FOX 'A' 16 REFUGIO-FOX (4700) HILCORP ENERGY COMPANY 272306


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ W. J. FOX 'A' 20 REFUGIO-FOX (3940) HILCORP ENERGY COMPANY 273209 W. J. FOX 'A' 44 REFUGIO-FOX (1675) HILCORP ENERGY COMPANY 272721 W. T. BELL GAS UNIT 1A JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 230406 W. T. BELL GAS UNIT 9 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 225246 W. T. BELL GAS UNIT 10 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 227723 W. T. BELL GAS UNIT 11 JENNIE BELL (WILCOX 11500) REMORA OPERATING, LLC 229732 WADE 1 HOPE (WILCOX 9350) ESCONDIDO PETROLEUM COMPANY, INC 250456 WADE MCNEILL SOUTH 1 JACKSON RANCH (YEGUA 5250) APEX ENERGY, INC. 257866 WAGNER A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 263810 WAGNER A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281924 WAGNER B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 264992 WAGNER B 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287506 WAGNER B 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281925 WAGNER B 8H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287508 WAGNER B 9H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287586 WAGNER B 11H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287507 WAGNER B 12H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 287509 WAGNER GAS UNIT 1H KAWITT (EDWARDS) ATLAS OPERATING LLC 072897 WAGNER GAS UNIT 2 H KAWITT (EDWARDS) ATLAS OPERATING LLC 212224 WALKER, ACE 4 WILDCAT JAMEX, INC. 226827 WALLACE 1 MEYERSVILLE, E. (3000) ARCH OIL & GAS, LLC 137536 WALLIS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265660 WALSTON-PETTUS 1 DALLAS HUSKY, NE. (MACKHANK) WELDER EXPLORATION & PROD., INC. 236915 WALSTON-PETTUS A 3 DALLAS HUSKY, NE. (MASSIVE WX) WELDER EXPLORATION & PROD., INC. 242641 WALTER DIETZEL 0001 COLLETOVILLE CREEK (FRIO 3800) B.P. PRODUCTIONS INC. 258242 WALTER WERNLI 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271138 WALTERS, DOROTHY 2 VIENNA (WILCOX, MIDDLE U) TEXAS INDEPENDENT EXPLOR LTD. 154952 WALTERS, DOROTHY 3 PROVIDENT CITY (2150) TMR EXPLORATION, INC. 178245 WALTERS, DOROTHY 4 PROVIDENT CITY (YEGUA Y-1) TMR EXPLORATION, INC. 282717 WALTERS, DOROTHY 4-C PROVIDENT CITY (YEGUA 5770) TMR EXPLORATION, INC. 152258 WALTERS, DOROTHY 4-T PROVIDENT CITY (5800) TMR EXPLORATION, INC. 152259 WALTERS, DOROTHY 6 PROVIDENT CITY (FRIO 2750) TMR EXPLORATION, INC. 168751 WALTON 1 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 263092 WALTON 2 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 265536 WARLING 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 265013 WARLING 01 02H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276392 WARLING 01 03H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 276393 WARLING 01 04H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 279019 WARLING 01 05H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 273207 WARLING 01 06H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 275911 WARLING 01 07H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 278360 WARLING 01 08H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280368 WARLING 01 09H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280506 WARLING 01 10H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 280371 WARNER (SL) 01 16H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281350 WARNER (SL) 01 18H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281352 WARNER 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268095 WARNER 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271806 WARNER 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271726 WARNER 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278299 WARNER 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278300


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WARNER 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278298 WARNER 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278591 WARNER 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278193 WARNER 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278194 WARNER 01 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278323 WARNER 01 11H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 278295 WARNER 01 12H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 280911 WARNER 01 13H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281118 WARNER 01 14H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281418 WARNER 01 15H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281444 WARNER 01 17H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 281274 WARNKEN, LENA 2 PLACEDO, EAST (5600 SD.) ALLEGIANT RESOURCES, LLC 109552 WARWAS A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281899 WARWAS A 2H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286221 WARWAS A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 286593 WARZECHA 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 266606 WASKOW (WILCOX) GAS UNIT 2 KAWITT (SECOND ROEDER) REPSOL OIL & GAS USA, LLC 210503 WASKOW, HENRY A 1 NORDHEIM (WILCOX 9900) COWRIE ENERGY LLC 089213 WATSON 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268524 WATT 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268676 WATT 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269376 WATTS-GISLER 1 MISSION VALLEY (10,220) UNION GAS OPERATING COMPANY 177966 WATTS-GISLER 2 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 203504 WATTS-GISLER 3 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 203502 WAYNE 1 TELFERNER, NORTH (3600 FRIO) CML EXPLORATION, LLC 289855 WAYNE O. ZENGERLE GAS UNIT 5 GUN POINT, S. (WILCOX, LOWER) URBAN OIL & GAS GROUP, LLC 233643 WAYNE, JOHN 1 TYNAN, EAST (2240) GREAT TEXAS CRUDE INC. 169335 WEARDEN 1 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 219217 WEARDEN 1 WEARDEN (4450) VAQUERO OPERATING 230673 WEARDEN 2 WEARDEN (4450) VAQUERO OPERATING 229496 WEARDEN B 1 C WEARDEN (FRIO) VAQUERO OPERATING 251052 WEARDEN B 1 T WEARDEN (4450) VAQUERO OPERATING 251053 WEARDEN BFE 1 CORDELE, EAST (2800) VAQUERO OPERATING 219455 WEATHERSBY 1 MOUNT LUCAS, N.W. (HOCKLEY-A-) DENNIS, L.W. & ASSOCIATES, INC. 107086 WEBB, OLLIE -A- 3 WESER (RECKLAW 7600) ADVANTAGE OIL & GAS, INC. 035035 WEBERNICK ET AL GAS UNIT 1 BRUSHY CREEK (WILCOX CONS.) TALOS GULF COAST ONSHORE LLC 219620 WEBERNICK ET AL GAS UNIT 2 BRUSHY CREEK (WILCOX CONS.) TALOS GULF COAST ONSHORE LLC 221239 WEBERNICK G.U. 1 BRUSHY CREEK (WILCOX CONS.) PETRO-SMITH OPERATING LLC 124054 WEBERNICK UNIT 1 BRUSHY CREEK (WILCOX CONS.) TRI-C RESOURCES, LLC 210142 WEBERNICK-GOFF 1 BRUSHY CREEK (WILCOX CONS.) TRI-C RESOURCES, LLC 210147 WEED 1 WEED (LOWER FRIO) REMORA OPERATING, LLC 218584 WEED A 1 FRANCITAS, SOUTH (10,100) TEXAS INDEPENDENT EXPLOR LTD. 245483 WEED, J. F. 20 FRANCITAS, SOUTH ( 9,850) TEXAS INDEPENDENT EXPLOR LTD. 234410 WEISE 2 WEESATCHE, WEST (COOK MT.) SUE-ANN OPERATING, L.C. 196686 WEISE, ANNIE 1 WEESATCHE, W. (J SAND) SUE-ANN OPERATING, L.C. 210500 WEISE, BRUCE 1 WEESATCHE, WEST (COOK MT.) COASTLINE EXPLORATION, INC. 212488 WEISE, FRITZ 1 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 208012 WEISE, FRITZ 2 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 212577 WEISE, FRITZ 3 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 243806 WEISE, FRITZ 4 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 231382 WEISE, FRITZ 9 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 236999


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WEISE, FRITZ GU "A" 1 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 219641 WEISE, FRITZ GU "A" 3 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 235582 WEISE, FRITZ GU "A" 4 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 232875 WEISE, FRITZ GU "A" 7 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 241841 WEISE, FRITZ GU "A" 10 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 242925 WELDER 1 KATIE WELDER (F-4) B&L EXPLORATION, L.L.C. 275703 WELDER 3 SHERIFF (9400) B&L EXPLORATION, L.L.C. 281978 WELDER 4 SHERIFF (9400) B&L EXPLORATION, L.L.C. 282697 WELDER 6 SHERIFF (9400) B&L EXPLORATION, L.L.C. 285642 WELDER 8 SHERIFF (9400) B&L EXPLORATION, L.L.C. 286101 WELDER 58D HEYSER (3900) B&L RESOURCES, L.L.C. 285039 WELDER - COLE 1 DANIEL RANCH (YEGUA) SURE FLOW OIL & GAS, INC. 159805 WELDER 'J' 36 VIDAURI, NORTH (3200) REMORA OPERATING, LLC 281650 WELDER "A" 53 HEYSER (F-34) B&L RESOURCES, L.L.C. 172865 WELDER "A" 53 HEYSER (5400 #1) B&L RESOURCES, L.L.C. 172562 WELDER "B" 3 VIDAURI (2760) REMORA OPERATING, LLC 160760 WELDER "B" 3 VIDAURI, WEST (4800) REMORA OPERATING, LLC 158433 WELDER "B" 10 KATIE WELDER (G-13) B&L RESOURCES, L.L.C. 216683 WELDER "B" 12U HEYSER (F-34) B&L RESOURCES, L.L.C. 143119 WELDER "B" 13-L KATIE WELDER (K-3) B&L RESOURCES, L.L.C. 144064 WELDER B 12 L HEYSER, SE. (6250) B&L RESOURCES, L.L.C. 133407 WELDER B 16 HEYSER, SE. (6250) B&L RESOURCES, L.L.C. 141138 WELDER C 187 LA ROSA, SOUTH (FRIO 8300 B) MCGOWAN WORKING PARTNERS, INC. 209910 WELDER HEIRS "A" A 5 HELEN GOHLKE ( FRIO 3250) FINLEY RESOURCES, INC. 172717 WELDER HEIRS "E" 2 NURSERY, SE. (900) FINLEY RESOURCES, INC. 164642 WELDER HEIRS TC 1 GRETA, NORTH (6440) CHARRO OPERATING, L.L.C. 284331 WELDER RANCH A 2 MARSHALL (MIDDLE WILCOX) PROLINE ENERGY RESOURCES INC 222477 WELDER-CLIBURN 3C MOSQUITO POINT, NE. (FRIO G-2) HENDRIK'S HOLDING USA LTD. 061276 WELDER-COLE 3 DANIEL RANCH (YEGUA) SURE FLOW OIL & GAS, INC. 175895 WELDER, E. H. MRS. 6 HEYSER (5400 #2) B&L RESOURCES, L.L.C. 090355 WELDER, E. H. MRS. 16 HEYSER (5400 #1) B&L RESOURCES, L.L.C. 138292 WELDER, JANE 1 CAMERON-ALLEN (FRIO 4000) SWOPE CORP. 132081 WELDER, M S EST 14 MARCADO CREEK (4290 FRIO) FIELD PETROLEUM CORP. 208147 WELDER, M. S. EST. 5 NOMECO (4360 FRIO) FIELD PETROLEUM CORP. 173804 WELDER, M. S. EST. 10 PATRICIA (2800 CATAHOULA) FIELD PETROLEUM CORP. 189327 WELDER, M. S. EST. 20 PATRICIA (MASSIVE CATAHOULA) FIELD PETROLEUM CORP. 200773 WELDER, M.S. ESTATE 24 PATRICIA, S. (FRIO 4150) FIELD PETROLEUM CORP. 223541 WELDER, MINNIE EST 15 MARCADO CREEK (4290 FRIO) FIELD PETROLEUM CORP. 221031 WELDER, P. H. -A- 6 D HEYSER (5400 #2) B&L RESOURCES, L.L.C. 090361 WELDER, P. H. -A- 9 HEYSER (5400 #2) B&L RESOURCES, L.L.C. 100559 WELDER, P. H. -A- 11 HEYSER (5400 #2) B&L RESOURCES, L.L.C. 090363 WELDER, P. H. -A- 14 HEYSER (5400 #2) B&L RESOURCES, L.L.C. 090365 WELDER, P. H. -B- 13 HEYSER (5400 #2) B&L RESOURCES, L.L.C. 090368 WELDER, P. H. -C- 4 HEYSER (5400 #2) FREDCO 130936 WELDER, P. H. -C- 5 HEYSER (5400 #2) FREDCO 060569 WELDER, P. H. -C- (PF) 1 HEYSER (5400 #2) FREDCO 090801 WELDER, P. H. 'A' 10 HEYSER (5400 #1) B&L RESOURCES, L.L.C. 140657 WELDER, P. H. 'A' 13 HEYSER (5400 #1) B&L RESOURCES, L.L.C. 139894 WELDER, P. H. "B" 7 HEYSER (3400) B&L RESOURCES, L.L.C. 181634 WELDER, P. H.-C- 14 HEYSER (3900) FREDCO 045858 WELDER, P.H -C- 15 HEYSER (5400 #1) FREDCO 131493


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WELDER, P.H. -C- 2D HEYSER (3900) FREDCO 128537 WELDER, P.H. -C- 8 HEYSER (GRETA STRINGER) FREDCO 203202 WELDER, P.H. -C- 16 HEYSER (4400) FREDCO 131628 WELDER, P.H. "A" 2 HEYSER (5400 #1) B&L RESOURCES, L.L.C. 135157 WELDER, P.H. "C" 6 HEYSER (5400 #1) FREDCO 148647 WELDER, P.H. "C" 7 HEYSER (4400) FREDCO 162516 WELDER, P.H. "C" 12 HEYSER (5400 #1) B&L EXPLORATION, L.L.C. 145852 WELDER, PATRICK H. 5 WELDER RANCH (5300) PROLINE ENERGY RESOURCES INC 265973 WELDER, PATRICK H. -A- 35 HEYSER (F-34) B&L RESOURCES, L.L.C. 114992 WELDER, PATRICK H. -A- 41 HEYSER (F-40) B&L RESOURCES, L.L.C. 113506 WELDER, PATRICK H. -A- 51 D HEYSER (3900) B&L RESOURCES, L.L.C. 112885 WELDER, PATRICK H. 'A' 6-F HEYSER (5400 #1) B&L RESOURCES, L.L.C. 138667 WELDER, ROB DUNE ENERGY 1 MCFADDIN (5700) PROLINE ENERGY RESOURCES INC 207651 WELHAUSEN A 1 WILDCAT PENN VIRGINIA OIL & GAS, L.P. 265202 WELHAUSEN A 2H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287936 WELHAUSEN A 3H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287960 WELHAUSEN A 4H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287961 WELHAUSEN A 7H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287964 WELHAUSEN A 8H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287990 WELHAUSEN B 1H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287808 WELHAUSEN B 2H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287587 WELHAUSEN B 3H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287588 WELHAUSEN B 4H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287590 WELHAUSEN B 5H EAGLEVILLE (EAGLE FORD-2) PENN VIRGINIA OIL & GAS, L.P. 287591 WENDT 1 YOAKUM, N. (UPR. WILCOX) SHIDLER, MARK L., INC. 198016 WERNLI UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266480 WERNLI UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272413 WERNLI 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268779 WESS 4-SLAUGHTER-RT (SA) C3 C 3H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 286318 WESS 4-SLAUGHTER-RT (SA) C3 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 285851 WESS 4-SLAUGHTER-RT (SA) C4 C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 285817 WESS 4-SLAUGHTER-RT (SA) C7 C 7H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 286907 WESS 4-SLGTR- ECRR (SA) B6 B 6H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 287141 WESS 4-SLGTR-ECRR (SA) B4 B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287118 WESS 4-SLGTR-ECRR (SA) B5 B 5H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 288101 WESS 4-SLGTR-ECRR (SA) B5 B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 287274 WESS 4-SLGTR-ECRR-RT (SA) C5 C 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 285819 WESSENDORFF A UNIT 2H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287819 WESSENDORFF A UNIT 3H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287838 WESSENDORFF A UNIT 4H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287970 WESSENDORFF A UNIT 5H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287984 WESSENDORFF A UNIT 6H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287987 WESSENDORFF A UNIT 7H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287988 WESSENDORFF A UNIT 8H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 289920 WESSENDORFF A UNIT 9H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 289921 WESSENDORFF A UNIT 10H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287895 WESSENDORFF A UNIT 11H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287996 WESSENDORFF A UNIT 12H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287997 WESSENDORFF A UNIT 13H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 288033 WESSENDORFF A UNIT 14H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 287995 WESSENDORFF A UNIT 15H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 288074


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WESSENDORFF A UNIT 17H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 284333 WESSENDORFF A UNIT 18H EAGLEVILLE (EAGLE FORD-2) VALIDUS NRG AQUILAS ASSETCO LLC 284796 WESSENDORFF A UNIT 18H SUGARKANE (AUSTIN CHALK) VALIDUS NRG AQUILAS ASSETCO LLC 290124 WESSENDORFF GAS UNIT 1 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 222947 WESSENDORFF GAS UNIT 1 2 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 249352 WESSENDORFF GAS UNIT 2 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 227682 WESSENDORFF GAS UNIT 3 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 244741 WESSENDORFF GAS UNIT 4 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 244751 WESSENDORFF GAS UNIT 4 2 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 245387 WESSENDORFF GAS UNIT 5 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 253110 WESSENDORFF GAS UNIT 5 2 SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 265092 WESSENDORFF GAS UNIT 6 1 SPEARY (EDWARDS) REPSOL OIL & GAS USA, LLC 244762 WESSENDORFF GAS UNIT 6 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 266140 WESSENDORFF 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266608 WESSENDORFF 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269540 WESSENDORFF 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269548 WESSENDORFF 01 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 269547 WESSENDORFF 01 05H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272373 WESSENDORFF 01 06H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272383 WESSENDORFF 01 07H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272374 WESSENDORFF 01 08H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277845 WESSENDORFF 01 09H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277781 WESSENDORFF 01 10H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277810 WESSENDORFF 01 11H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277735 WESSENDORFF 01 12H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 277970 WESSENDORFF 02 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266609 WESSENDORFF 02 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271720 WESSENDORFF 02 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271423 WESSENDORFF 02 04H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 271207 WESSENDORFF 3-ESCONDIDO CREEK (S B 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 271702 WESSENDORFF 4-SLAUGHTER (SA) B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 270218 WESSENDORFF 4-SLAUGHTER (SA) B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 270219 WESSENDORFF 5-ALEX-WESS 2 (SA) A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 274434 WESSENDORFF 5-ALEX-WESS 2 (SA) A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 274290 WESSENDORFF 5-MAGARIGAL (SA) B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272515 WESSENDORFF 5-WESS 7-WESS 2 (SA) A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272512 WESSENDORFF 5-WESSENDORFF 2 (SA) C 5H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 282126 WESSENDORFF 5-WESSENDORFF 2 (SA) C 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 282124 WESSENDORFF 5-WESSENDORFF 7 (SA) B 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 268975 WESSENDORFF 5-WESSENDORFF 7 (SA) C 1H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 282258 WESSENDORFF 5-WESSENDORFF 7 (SA) C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 281468 WESSENDORFF 5-WESSENDORFF 7 (SA) C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 282101 WESSENDORFF 5-WESSENDORFF 7 (SA) C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 282120 WESSENDORFF 5-WESSENDORFF 7 (SA) C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 282123 WESSENDORFF 6-WESSENDORFF 1 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272513 WESSENDORFF 6-WESSENDORFF 1 (SA) C 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272709 WESSENDORFF 6-WESSENDORFF 1 (SA) C 5H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 275368 WESSENDORFF 6-WESSENDORFF 1 (SA) D 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 273130 WESSENDORFF 6-WESSENDORFF 1 (SA) D 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272674 WESSENDORFF 6-WESSENDORFF 8 (SA) C 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272675 WESSENDORFF 6-WESSENDORFF 8 (SA) C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 274951


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WESSENDORFF3-ESCONDIDO CREEK (SA B 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 272511 WESSENDORFF3-ESCONDIDO CREEK (SA B 6H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 271808 WESSON & COX 2 LOLITA (TONEY ZONE) MCGOWAN WORKING PARTNERS, INC. 121471 WEST 1 NURSERY (2800) CAMOIL, INC. 088602 WEST 1 PROVIDENT CITY (FRIO 3260) TMR EXPLORATION, INC. 173015 WEST 3 LIMES (WILCOX 7900) INLAND OCEAN, INC. 232116 WEST RANCH -A- 13 WEST RANCH (WARD) HILCORP ENERGY COMPANY 194705 WEST RANCH -A- 16 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 051199 WEST RANCH -A- 29 WEST RANCH (WARD) HILCORP ENERGY COMPANY 205337 WEST RANCH -A- 32 WEST RANCH (VANDERBILT SAND) HILCORP ENERGY COMPANY 139746 WEST RANCH -A- 35 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 212289 WEST RANCH -A- 42 WEST RANCH (WARD) HILCORP ENERGY COMPANY 203552 WEST RANCH -A- 47 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214458 WEST RANCH -A- 54 WEST RANCH (TONEY) HILCORP ENERGY COMPANY 059309 WEST RANCH -A- 72 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 144535 WEST RANCH -A- 75 WEST RANCH (80-A) HILCORP ENERGY COMPANY 281485 WEST RANCH -A- 76 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 147676 WEST RANCH -A- 103 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 142731 WEST RANCH -A- 109 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 151651 WEST RANCH -A- 116 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 085921 WEST RANCH -A- 127 WEST RANCH (TONEY) HILCORP ENERGY COMPANY 290233 WEST RANCH -A- 137 WEST RANCH (WARD) HILCORP ENERGY COMPANY 228980 WEST RANCH -A- 140 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200838 WEST RANCH -A- 145 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200921 WEST RANCH -A- 155 WEST RANCH (WARD) HILCORP ENERGY COMPANY 111110 WEST RANCH -A- 161 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 233185 WEST RANCH -A- 162 WEST RANCH (WARD) HILCORP ENERGY COMPANY 199966 WEST RANCH -A- 165 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200825 WEST RANCH -A- 171 WEST RANCH (WARD) HILCORP ENERGY COMPANY 228982 WEST RANCH -A- 174 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 158871 WEST RANCH -A- 175 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 158870 WEST RANCH -A- 180 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 110403 WEST RANCH -A- 188 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 139852 WEST RANCH -A- 202 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200756 WEST RANCH -A- 213 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200908 WEST RANCH -A- 215 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 133734 WEST RANCH -A- 225 WEST RANCH (WARD) HILCORP ENERGY COMPANY 202825 WEST RANCH -A- 242 WEST RANCH (WARD) HILCORP ENERGY COMPANY 288437 WEST RANCH -A- 257 U WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 043037 WEST RANCH -A- 269 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 284677 WEST RANCH -A- 278 WEST RANCH (WARD) HILCORP ENERGY COMPANY 114885 WEST RANCH -A- 279 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 245393 WEST RANCH -A- 287 WEST RANCH (WARD) HILCORP ENERGY COMPANY 184360 WEST RANCH -A- 288 WEST RANCH (ARMSTRONG) HILCORP ENERGY COMPANY 147983 WEST RANCH -A- 302 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200209 WEST RANCH -A- 305 WEST RANCH (WARD) HILCORP ENERGY COMPANY 109255 WEST RANCH -A- 310 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 288775 WEST RANCH -A- 328 WEST RANCH (WARD) HILCORP ENERGY COMPANY 212261 WEST RANCH -A- 333 WEST RANCH (WARD) HILCORP ENERGY COMPANY 228988 WEST RANCH -A- 334 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200909 WEST RANCH -A- 342 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 212779


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WEST RANCH -A- 346 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 206746 WEST RANCH -A- 349 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 271763 WEST RANCH -A- 349 WEST RANCH (WARD) HILCORP ENERGY COMPANY 190446 WEST RANCH -A- 351 WEST RANCH (ARMSTRONG) HILCORP ENERGY COMPANY 250218 WEST RANCH -A- 358 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 132587 WEST RANCH -A- 360 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 220113 WEST RANCH -A- 363 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 229486 WEST RANCH -A- 364 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214462 WEST RANCH -A- 368 WEST RANCH (WARD) HILCORP ENERGY COMPANY 194726 WEST RANCH -A- 372 WEST RANCH (MENEFEE 5500) HILCORP ENERGY COMPANY 232871 WEST RANCH -A- 375 L WEST RANCH (WARD) HILCORP ENERGY COMPANY 114005 WEST RANCH -A- 376 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214060 WEST RANCH -A- 377 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214446 WEST RANCH -A- 378 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 235328 WEST RANCH -A- 384 WEST RANCH (ARMSTRONG) HILCORP ENERGY COMPANY 145258 WEST RANCH -A- 384 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 206749 WEST RANCH -A- 389 WEST RANCH (WARD) HILCORP ENERGY COMPANY 121517 WEST RANCH -A- 391 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 206745 WEST RANCH -A- 413 WEST RANCH (WARD) HILCORP ENERGY COMPANY 203538 WEST RANCH -A- 415 WEST RANCH (80-A) HILCORP ENERGY COMPANY 281486 WEST RANCH -A- 429 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 158914 WEST RANCH -A- 430 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214463 WEST RANCH -A- 433 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 230810 WEST RANCH -A- 453 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200820 WEST RANCH -A- 455 WEST RANCH (80-A) HILCORP ENERGY COMPANY 280571 WEST RANCH -A- 460 WEST RANCH (WARD) HILCORP ENERGY COMPANY 209721 WEST RANCH -A- 472 WEST RANCH (WARD) HILCORP ENERGY COMPANY 190308 WEST RANCH -A- 483 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 109076 WEST RANCH -A- 485 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200526 WEST RANCH -A- 489 WEST RANCH (80-A) HILCORP ENERGY COMPANY 281632 WEST RANCH -A- 493 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 230655 WEST RANCH -A- 494 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214470 WEST RANCH -A- 495 WEST RANCH (WARD) HILCORP ENERGY COMPANY 184632 WEST RANCH -A- 499 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 108139 WEST RANCH -A- 502 WEST RANCH (WARD) HILCORP ENERGY COMPANY 205519 WEST RANCH -A- 503 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 141390 WEST RANCH -A- 504 WEST RANCH (WARD) HILCORP ENERGY COMPANY 206736 WEST RANCH -A- 510 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 149063 WEST RANCH -A- 513 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 135481 WEST RANCH -A- 520 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 146173 WEST RANCH -A- 520 WEST RANCH (80-A) HILCORP ENERGY COMPANY 280572 WEST RANCH -A- 523 WEST RANCH (WARD) HILCORP ENERGY COMPANY 199049 WEST RANCH -A- 528 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 155740 WEST RANCH -A- 531 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 160719 WEST RANCH -A- 540 H WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 250900 WEST RANCH 'A' 336 WEST RANCH (MUSQUEZ) HILCORP ENERGY COMPANY 159362 WEST RANCH 'A' 522 WEST RANCH (TONEY) HILCORP ENERGY COMPANY 146234 WEST RANCH "A" 112 WEST RANCH (3800) HILCORP ENERGY COMPANY 137599 WEST RANCH "A" 344 WEST RANCH (3800) HILCORP ENERGY COMPANY 135480 WEST RANCH "A" 357 WEST RANCH (3800) HILCORP ENERGY COMPANY 120538 WEST RANCH "A" 447 WEST RANCH (FRIO 449) HILCORP ENERGY COMPANY 097778


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WEST RANCH "A" 448 WEST RANCH (DIXON SAND) HILCORP ENERGY COMPANY 109256 WEST RANCH STATE O & G UNIT #1 5 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 155621 WEST RANCH STATE OIL & GAS UNIT1 15 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 148606 WEST RANCH STATE OIL & GAS UNIT1 18 WEST RANCH, S. (FRIO 7200) HILCORP ENERGY COMPANY 262922 WEST RANCH STATE OIL & GAS UT. 2 2 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 156826 WEST RANCH STATE OIL & GAS UT. 2 3 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 155600 WEST, CLAY 1 KITTY BURNS (10,400) KEBO OIL & GAS, INC. 232942 WEST, CLAY 2 KITTY BURNS ( WILCOX UPPER) KEBO OIL & GAS, INC. 207896 WEST, GEORGE ESTATE 1 GEORGE WEST, WEST (7500 WILCOX) BYNG ENERGY GROUP, INC. 040776 WEST, GEORGE ESTATE 3 U GEORGE WEST, WEST (8300) THREE C EXPLORATION, LLC 083676 WEST, GEORGE ESTATE 4 GEORGE WEST, WEST (10900 WILCOX) BYNG ENERGY GROUP, INC. 152273 WEST, GEORGE ESTATE 5 GEORGE WEST, WEST (7300) PRIDE ENERGY COMPANY 155947 WEST, JOHN 1 NURSERY, S. (1000) MOSAIC OIL LLC 064284 WESTHOFF RANCH 1 TEXANA, N. (FRIO 6175) ALAMO OPERATING COMPANY, L. C. 269677 WESTHOFF SWD 1 DE WITT (EAGLE FORD SHALE) CWR MANAGEMENT LLC 265668 WESTHOFF, A. E. 1 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 162254 WESTHOFF, A. E. 2 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 155763 WESTHOFF, A. E. 4 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 196683 WESTHOFF, A. E. 6 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 194618 WESTHOFF, A. E. 7 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 200918 WESTHOFF, A. E. 9 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 203592 WESTHOFF, A. E. 17 WESTHOFF (COMBINED ASSOCIATED) PROLINE ENERGY RESOURCES INC 221934 WESTON GAS UNIT 1 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 274914 WESTON GAS UNIT 1 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270338 WESTON GAS UNIT 1 10H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 270480 WESTON GAS UNIT 1 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270393 WESTON GAS UNIT 1 12H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 270975 WESTON-HENKE UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270486 WHIDDON 3 NORBEE (GEOLOGIC) HEADWATERS ENERGY PARTNERS, LLC 283263 WHIDDON-SEGER GAS UNIT 2 SKIDMORE, WEST (4500) POCO LLC 250646 WHIDDON-SEGER GAS UNIT 3 WILDCAT POCO LLC 281482 WHIPP 1 MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 216661 WHITE 1 COOK (9730) THUNDERBIRD ENERGY, INC. 137095 WHITE, S. L. 1 FRIAR RANCH, S. (CONSOLIDATED) FLETCHER OPERATING, LLC 237085 WHITESIDE 335 1 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 262992 WHITFIELD 2 NORDHEIM, SW. (11,400) ARCADIA OPERATING, LLC 252967 WICK 1 WORD (WILCOX, LOWER) TRIO CONSULTING & MANAGEMENT,LLC 284951 WICK GAS UNIT 1 SWEET HOME (EDWARDS) LEWIS PETRO PROPERTIES, INC. 225155 WICK UNIT 1 GOOD HOPE (WICK 10100) BRITANCO, L.L.C. 122617 WICKER, E. H. 1 TEN-TEN (FRIO 3600) DURANGO RESOURCES CORP. 172086 WICKER, E. H. B 1 TEN-TEN (FRIO 3600) DURANGO RESOURCES CORP. 176130 WIEDING 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268549 WIEDING-WESTON UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266839 WIEDING-WESTON UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275693 WIEDING-WESTON UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 277621 WIEDING-WESTON UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288134 WIEDING-WESTON UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288102 WIEDING-WESTON UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288103 WIEDING-WESTON UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 288104 WIEDING-WESTON UNIT 14H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287294 WIEDING-WESTON UNIT 15H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287295


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WIEDING-WESTON UNIT 16H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287308 WIEDING-WESTON UNIT 17H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 287309 WIEDING-WESTON UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276362 WIEDING-WESTON UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276368 WIGGINS, A.C. ET AL 1 YORKTOWN (WILCOX 10100) FAULCONER, VERNON E., INC. 111415 WILBUR EDEN 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268843 WILBUR EDEN 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 275609 WILBUR EDEN 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 276872 WILBURN 2 SWINNEY SWITCH (HOCKLEY, UPPER) TEXAS SOUTHERN PETROLEUM CORP. 223777 WILBURN-RUTLEDGE UNIT 1 SWINNEY SWITCH (HOCKLEY, UPPER) WELDER EXPLORATION & PROD., INC. 256102 WILCOX HALLETTSVILLE GAS UNIT 1 HALLETSVILLE (SIMMONS) CAPITAL STAR OIL & GAS, INC. 142681 WILD UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264715 WILD UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 273521 WILD UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 279668 WILD UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 279879 WILD 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 267976 WILHELM, J. B. GAS UNIT 1 WILHELM (FRIO 3100) NORTEX OIL & GAS CORP. 004743 WILKINSON 1 BERCLAIR (LULING) WELDER EXPLORATION & PROD., INC. 259995 WILKINSON, BERTHA & CARLYYLE -B- 1 BERCLAIR (2100) WILKINSON, ROBERT P. 000846 WILLBERN 1 PORTER PREMIUM EXPLORATION COMPANY 112738 WILLBERN-BUEGELER UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270334 WILLEFORD, B. R. 1 SCHWARTZ (700) WILLEFORD, BILLY RAY 004101 WILLEKE UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 265472 WILLEKE UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266823 WILLEKE UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290837 WILLEKE UNIT A 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290838 WILLEKE UNIT A 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290863 WILLEKE UNIT A 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290831 WILLEKE UNIT A 7 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290862 WILLEKE UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268699 WILLEKE UNIT B 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 283173 WILLEMIN 1 COLLETOVILLE CREEK (CATAH. 2450) DESANA DEVELOPMENT CORPORATION 198576 WILLIAM HOLLAND 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268839 WILLIAM KELLY 01 01H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 266610 WILLIAM KELLY 01 02H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 268954 WILLIAM KELLY 01 03H SUGARKANE (EAGLE FORD) ENSIGN OPERATING LLC 272352 WILLIAMS 1 HOPE (WILCOX MASSIVE) SALT CREEK PRODUCTION, INC. 235534 WILLIAMS 1 TERRYVILLE (4800) NEW CENTURY EXPLORATION, INC. 216497 WILLIAMS 1D HOPE (WILCOX 8800) MESSY OIL AND GAS, LLC 175395 WILLIAMS A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 263755 WILLIAMS A 3H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 281965 WILLIAMS B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267042 WILLIAMS-BUCHHOLZ 1 COLOGNE (2100) STRATA OPERATING, INC. 288336 WILLIAMS-BUCHHOLZ 1 COLOGNE (4950) STRATA OPERATING, INC. 284236 WILLIAMS, C. M. 1 HOPE (WILCOX MASSIVE) NORTH AMERICAN DRILLING CORP 220624 WILLIAMS, MAUDDE ET AL "A" D 27 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 221265 WILLIAMS, MAUDE ET AL "A" D 87 LAKE PASTURE (H-495) HILCORP ENERGY COMPANY 282921 WILLIAMS, MAUDE ET AL -A- 4 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 215224 WILLIAMS, MAUDE ET AL -A- 10 LAKE PASTURE (FS-509) HILCORP ENERGY COMPANY 043430 WILLIAMS, MAUDE ET AL -A- 14 LAKE PASTURE (E-221) HILCORP ENERGY COMPANY 086351 WILLIAMS, MAUDE ET AL -A- 26 TOM O'CONNOR(4900) HILCORP ENERGY COMPANY 163135


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WILLIAMS, MAUDE ET AL -A- 35 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 176646 WILLIAMS, MAUDE ET AL -A- 37 TOM OCONNOR (5050, EAST) HILCORP ENERGY COMPANY 210577 WILLIAMS, MAUDE ET AL -A- 60 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 170973 WILLIAMS, MAUDE ET AL -A- 67 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 081723 WILLIAMS, MAUDE ET AL -A- 76 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 135290 WILLIAMS, MAUDE ET AL -A- 77 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 171177 WILLIAMS, MAUDE ET AL -A- 78 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 136550 WILLIAMS, MAUDE ET AL -A- 83 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 282313 WILLIAMS, MAUDE ET AL -A- D 54 D LAKE PASTURE (E-221) HILCORP ENERGY COMPANY 090092 WILLIAMS, MAUDE ET AL -A- D 54 J LAKE PASTURE (M-307) HILCORP ENERGY COMPANY 080490 WILLIAMS, MAUDE ET AL -A- D 60 LAKE PASTURE (FS-545) HILCORP ENERGY COMPANY 123972 WILLIAMS, MAUDE ET AL -A- D 75 H LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 002584 WILLIAMS, MAUDE ET AL -A- D 92 D LAKE PASTURE (E-233) HILCORP ENERGY COMPANY 105213 WILLIAMS, MAUDE ET AL -A- D 92 F LAKE PASTURE (E-288) HILCORP ENERGY COMPANY 105214 WILLIAMS, MAUDE ET AL -A- D 92 H LAKE PASTURE (E-293) HILCORP ENERGY COMPANY 105215 WILLIAMS, MAUDE ET AL -A- D103 F LAKE PASTURE (E-282) HILCORP ENERGY COMPANY 086293 WILLIAMS, MAUDE ET AL -A- D106 F LAKE PASTURE (E-288) HILCORP ENERGY COMPANY 083423 WILLIAMS, MAUDE ET AL -A- D108 D LAKE PASTURE (E-293) HILCORP ENERGY COMPANY 080485 WILLIAMS, MAUDE ET AL -A- D108 F LAKE PASTURE (M-295) HILCORP ENERGY COMPANY 064547 WILLIAMS, MAUDE ET AL -B- 2 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 259993 WILLIAMS, MAUDE ET AL 'A' D 17 LAKE PASTURE (M-318) HILCORP ENERGY COMPANY 171736 WILLIAMS, MAUDE ET AL 'A' D 20 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 176369 WILLIAMS, MAUDE ET AL 'A' D 34-D LAKE PASTURE (FS-523) HILCORP ENERGY COMPANY 178482 WILLIAMS, MAUDE ET AL 'A' D 40 LAKE PASTURE (E-275) HILCORP ENERGY COMPANY 288405 WILLIAMS, MAUDE ET AL 'A' D 54F LAKE PASTURE (E-235) HILCORP ENERGY COMPANY 171638 WILLIAMS, MAUDE ET AL 'A' D106 H LAKE PASTURE (H-484) HILCORP ENERGY COMPANY 135657 WILLIAMS, MAUDE ET AL 'A' D107 F LAKE PASTURE (E-235) HILCORP ENERGY COMPANY 174397 WILLIAMS, MAUDE ET AL 'A' D110D LAKE PASTURE (H-484) HILCORP ENERGY COMPANY 285050 WILLIAMS, MAUDE ET AL 'A' D110H LAKE PASTURE (H-484) HILCORP ENERGY COMPANY 145887 WILLIAMS, MAUDE ET AL 'A' D114 LAKE PASTURE (E-264) HILCORP ENERGY COMPANY 288182 WILLIAMS, MAUDE ET AL 'A' D120 LAKE PASTURE (M-338) HILCORP ENERGY COMPANY 268051 WILLIAMS, MAUDE ET AL "A" 7 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 181575 WILLIAMS, MAUDE ET AL "A" D 1G LAKE PASTURE (M-338) HILCORP ENERGY COMPANY 212510 WILLIAMS, MAUDE ET AL "A" D 3G LAKE PASTURE (H-495) HILCORP ENERGY COMPANY 258522 WILLIAMS, MAUDE ET AL "A" D 9 LAKE PASTURE (L-206) HILCORP ENERGY COMPANY 282893 WILLIAMS, MAUDE ET AL "A" D 10 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 156796 WILLIAMS, MAUDE ET AL "A" D 12 LAKE PASTURE (L-200) HILCORP ENERGY COMPANY 282956 WILLIAMS, MAUDE ET AL "A" D 15 LAKE PASTURE (E-284) HILCORP ENERGY COMPANY 216805 WILLIAMS, MAUDE ET AL "A" D 16 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 221964 WILLIAMS, MAUDE ET AL "A" D 16 LAKE PASTURE (E-259) HILCORP ENERGY COMPANY 284280 WILLIAMS, MAUDE ET AL "A" D 22 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 225515 WILLIAMS, MAUDE ET AL "A" D 32F LAKE PASTURE (M-325) HILCORP ENERGY COMPANY 160706 WILLIAMS, MAUDE ET AL "A" D 34 F LAKE PASTURE (E-259) HILCORP ENERGY COMPANY 112901 WILLIAMS, MAUDE ET AL "A" D 57 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 237232 WILLIAMS, MAUDE ET AL "A" D 59 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 225901 WILLIAMS, MAUDE ET AL "A" D 61 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 161853 WILLIAMS, MAUDE ET AL "A" D 64 LAKE PASTURE (E-264) HILCORP ENERGY COMPANY 282376 WILLIAMS, MAUDE ET AL "A" D 64 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 206559 WILLIAMS, MAUDE ET AL "A" D 72 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 225051 WILLIAMS, MAUDE ET AL "A" D 75D LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 183230 WILLIAMS, MAUDE ET AL "A" D 80 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 127581


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WILLIAMS, MAUDE ET AL "A" D 81 LAKE PASTURE (M-358) HILCORP ENERGY COMPANY 231414 WILLIAMS, MAUDE ET AL "A" D 84 LAKE PASTURE (FT-690) HILCORP ENERGY COMPANY 239232 WILLIAMS, MAUDE ET AL "A" D 89 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 225068 WILLIAMS, MAUDE ET AL "A" D 97 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 129359 WILLIAMS, MAUDE ET AL "A" D103D LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 190737 WILLIAMS, MAUDE ET AL "A" D106D LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 191219 WILLIAMS, MAUDE ET AL "A" D107 D LAKE PASTURE (FS-545) HILCORP ENERGY COMPANY 152954 WILLIAMS, MAUDE ET AL "A" D107 H LAKE PASTURE (L-200) HILCORP ENERGY COMPANY 116636 WILLIAMS, MAUDE ET AL "A" D107D LAKE PASTURE (M-358) HILCORP ENERGY COMPANY 235864 WILLIAMS, MAUDE ET AL "A" D117 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 244759 WILLIAMS, MAUDE ET AL "A" D118 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 282318 WILLIAMS, MAUDE ET AL "A" D122 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 282709 WILLIAMS, MAUDE ET AL "A" D122 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 217537 WILLIAMS, MAUDE ET AL "A" D123 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 156173 WILLIAMS, MAUDE ET AL "A" D126 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 289495 WILLIAMS, MAUDE ET AL "A" D128 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 234919 WILLIAMS, MAUDE ET AL "A" D128 LAKE PASTURE (E-259) HILCORP ENERGY COMPANY 282206 WILLIAMS, MAUDE ET AL "A" D130 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 212185 WILLIAMS, MAUDE ET AL "A" D135 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 260558 WILLIAMS, MAUDE ET AL "A" D136 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 161854 WILLIAMS, MAUDE ET AL "A" D138 LAKE PASTURE (E-273) HILCORP ENERGY COMPANY 162401 WILLIAMS, MAUDE ET AL "A" D140 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 206493 WILLIAMS, MAUDE ET AL "A" D154 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 237758 WILLIAMS, MAUDE ET AL "A" D154 LAKE PASTURE (L-206) HILCORP ENERGY COMPANY 282390 WILLIAMS, MAUDE ET AL "A" D164 LAKE PASTURE (M-358) HILCORP ENERGY COMPANY 226854 WILLIAMS, MAUDE ET AL "A" D166 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 220062 WILLIAMS, MAUDE ET AL "A" D179 LAKE PASTURE (E-264) HILCORP ENERGY COMPANY 283523 WILLIAMS, MAUDE ET AL "A" D181 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 206553 WILLIAMS, MAUDE ET AL "A" D184 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 228640 WILLIAMS, MAUDE ET AL "A" D189 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 228530 WILLIAMS, MAUDE ET AL "A" D195 LAKE PASTURE (E-259) HILCORP ENERGY COMPANY 261172 WILLIAMS, MAUDE ET AL "A" D197 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 282317 WILLIAMS, MAUDE ET AL "A" D203 LAKE PASTURE (VICKSBURG 8100) HILCORP ENERGY COMPANY 214334 WILLIAMS, MAUDE ET AL "A" D204 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 239871 WILLIAMS, MAUDE ET AL "A" D54 H LAKE PASTURE (E-244) HILCORP ENERGY COMPANY 158418 WILLIAMS, MAUDE ET AL "B" 10 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 195374 WILLMS GU 1 SLICK, S. (WILCOX "J") RAVEN FOREST OPERATING, LLC 282183 WILSON HEARD -B- 8 TOM OCONNOR (6300) HILCORP ENERGY COMPANY 261303 WILSON, WILLIETT UNIT 1 SHERIFF EAST (8400) WOOLVERINE PRODUCTION COMPANY 060670 WINDBERG, DALHART 1 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 198681 WINDBERG, DALHART 2 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 199096 WINDBERG, DALHART 3 MARSHALL (MIDDLE WILCOX) REMORA OPERATING, LLC 200642 WINDHAM A 1H SUGARKANE (EAGLE FORD) BPX OPERATING COMPANY 260385 WINFORD EXTENDER CADDIS 1 BRUSHY CREEK (WILCOX -S-1-11200) ARRINGTON OIL&GAS OPERATING LLC 256381 WINFORD EXTENDER CADDIS A 2 BRUSHY CREEK (WILCOX -S-1-11200) ARRINGTON OIL&GAS OPERATING LLC 264415 WINGO 1 FLASH GORDON (3490) AMPAK OIL COMPANY 219622 WINNIE MADGE GOING GAS UNIT 3 PAWNEE (EDWARDS) ENSIGN OPERATING LLC 233614 WINSAUER, ALBERT 1 LITTLE JOHN (2900) GULF SANDS OIL CO. 094553 WITHERS 1 TULETA, WEST (HOCKLEY 3100) INLAND OCEAN, INC. 200550 WITT, THEODORE A. 1 HARRIS (TARA) TEXXCO ENERGY SERVICES INC 129569 WITTE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267046


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WLP 4 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 161248 WLP 5 G LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 046979 WLP G 3 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 187888 WLP G 9 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 180383 WOFFORD GAS UNIT 1 TYL (WILCOX 9550) WOFFORD, C. J. 187320 WOFFORD, R.L. 1 SLICK (PETTUS) SALVADOR OIL, LLC 130075 WOLF-COWLING "A" 2 KOERTH (WILCOX 11150) TRIO CONSULTING & MANAGEMENT,LLC 246334 WOLF, WALTER 1 ARNECKEVILLE (WOLF) RAMTEX ENERGY LLC 172067 WOLFF UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266266 WOLFF UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273491 WOLTERS, R. E. 1 MINOAK (SLICK 7300) ROCK RESOURCES, INC. 064534 WOMACK, J. Y. 1 MCFADDIN, NORTH (5200) AMERICO ENERGY RESOURCES, LLC 190352 WOMACK, W. 3 MCFADDIN, EAST (5610) AMERICO ENERGY RESOURCES, LLC 183828 WOOD 1 BLANCONIA, S.E. (2700) FREEHOL-E GAS COMPANY 105342 WOOD 1D CLAYTON, NORTH (5780 SLICK) 2 D OIL & GAS LLC 262140 WOOD 67-C SARCO CREEK (5000) CHARRO OPERATING, L.L.C. 182277 WOOD 77 SARCO CREEK (5000) CHARRO OPERATING, L.L.C. 191194 WOOD 81 SARCO CREEK (4100) CHARRO OPERATING, L.L.C. 182275 WOOD 93 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 212522 WOOD "H" 87 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 190438 WOOD RIVER RANCH 'B' 5 WOODSBORO (6200) KEBO OIL & GAS, INC. 286621 WOOD, CARRIE 34-C SARCO CREEK (2800) CHARRO OPERATING, L.L.C. 160369 WOOD, CARRIE 34-T SARCO CREEK (4500) CHARRO OPERATING, L.L.C. 163054 WOOD, CARRIE G. 36-C SARCO CREEK (4100) CHARRO OPERATING, L.L.C. 156537 WOOD, CARRIE G. 36-T SARCO CREEK (4240) CHARRO OPERATING, L.L.C. 160543 WOOD, CARRIE G. 63 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 190198 WOOD, L. EST "C" 5 WOODSBORO, WEST (3500 MIOCENE) MOMENTUM ENERGY CORPORATION 175039 WOOD, L. EST. "C" 6 WOODSBORO (5000 A) MOMENTUM ENERGY CORPORATION 194696 WOODRUFF 1 NURSERY (YEGUA 5700) EVEREST RESOURCE COMPANY 262893 WOODRUFF 3 NURSERY (YEGUA 5700) B.P. PRODUCTIONS INC. 169356 WOODS 1 MAYO (5930) PROLINE ENERGY RESOURCES INC 162504 WORLEY 7 BRANDT (PETTUS-CM CONS.) RAVEN FOREST OPERATING, LLC 285494 WORLEY GU 3 EMMA HAYNES (11,400 WILCOX) RAVEN FOREST OPERATING, LLC 282440 WORLEY, JAMES 1 GOTTSCHALT (PETTUS) PITCHFORK OIL & GAS, INC. 156128 WORSHAM GAS UNIT 1 AUSTIN, W. (UPPER WILCOX B) SCORPION OIL & GAS, LLC 177614 WOYTEK EDWARDS GAS UNIT 3H WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 224375 WOYTEK-EDWARDS 2 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 104738 WOYTEK-EDWARDS UNIT 1E WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 090502 WRIGHT MATERIALS INC 3 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 220033 WRIGHT MATERIALS INC. 1 WEESATCHE, NE. (HOLT FB A) UNITED TEXAS OIL LLC 285492 WRIGHT MATERIALS INC. 2 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 233310 WRIGHT MATERIALS INC. 9 LIONS (CORONA CONSOLIDATED) UNITED TEXAS OIL LLC 237637 WRIGHT MATERIALS INC. UNIT 1 SLICK, S. (WILCOX "J") RAVEN FOREST OPERATING, LLC 096917 WTU HALL 4 TULETA, WEST (9570) BRITANCO, L.L.C. 137905 WTU HALL 5 TULETA, WEST (SLICK-WILCOX 7500) BRITANCO, L.L.C. 169299 WTU ROBINSON 5 TULETA, WEST (SLICK-WILCOX 7900) BRITANCO, L.L.C. 209990 WTU-GILL 1 TULETA, WEST (SLICK-WILCOX 7900) BRITANCO, L.L.C. 255898 WUENSCH 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 265971 WYCHE 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 286291 WYNNE 2 WILDCAT MATAGORDA RESOURCES CO., INC. 231748 WYNNE GAS UNIT 2 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 094865


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WYNNE GAS UNIT 3 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 111417 WYNNE GAS UNIT 4 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 120138 WYNNE GAS UNIT 5 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 139857 WYNNE GAS UNIT 6 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 145076 WYNNE GAS UNIT 7 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 145245 WYNNE GAS UNIT 8 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 153586 WYNNE GAS UNIT 9 WORD, N. (EDWARDS) SULPHUR RIVER EXPLORATION, INC. 170258 YANTA A AC-CREWS B AC SA 1 1H SUGARKANE (AUSTIN CHALK) BPX OPERATING COMPANY 289656 YANTA A AC-CREWS B AC SA 3 3H SUGARKANE (AUSTIN CHALK) BPX OPERATING COMPANY 290090 YANTA A-CREWS B SA 1 1H EAGLEVILLE (EAGLE FORD-2) BPX OPERATING COMPANY 289608 YANTA CATTLE CO. 1 WILDCAT TIKI OIL & GAS, LLC 215070 YANTA CATTLE CO. A-288 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260701 YANTA CATTLE CO. A-288 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259789 YANTA CATTLE CO. A-288 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 285142 YANTA CENTRAL 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 262174 YANTA CENTRAL 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 261900 YANTA CENTRAL UNIT 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290428 YANTA CENTRAL UNIT 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290281 YANTA CENTRAL UNIT 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290429 YANTA 2-REIMAN ULW A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290282 YANTA 2-REIMAN ULW B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290283 YANTA 2-REIMAN ULW C 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 290285 YAUSSI B 20 CORDELE, WEST (JOE) N S P OPERATING GROUP LLC 159960 YAUSSI -A- 13 C CORDELE (1750 PINHEAD) N S P OPERATING GROUP LLC 131624 YAUSSI -A- 13 T CHULA VISTA (1800' SAND) N S P OPERATING GROUP LLC 132634 YAUSSI -B- B 8 CORDELE (1750 PINHEAD) N S P OPERATING GROUP LLC 130974 YAUSSI "A" 6 CORDELE, W. (CLONE) N S P OPERATING GROUP LLC 141055 YAUSSI "A" 7 CORDELE, WEST (TRAYLOR, UPPER) N S P OPERATING GROUP LLC 139806 YAUSSI B 19 CORDELE, WEST (STRAY 3000) N S P OPERATING GROUP LLC 161316 YAUSSI B SWD 1 CORDELE, W. (3730) N S P OPERATING GROUP LLC 131025 YEGUA EAST 1 HOPE (MIOCENE 2970) BIG LAKE CORPORATION 235974 YEGUA EAST 1 C HOPE (FRIO 3079) BIG LAKE CORPORATION 216492 YEGUA EAST 1 T HOPE (YEGUA 4850) BIG LAKE CORPORATION 216501 YEGUA EAST 2 HOPE (MIOCENE 2660) BIG LAKE CORPORATION 232310 YENDREY 1 BIG 12 (YEGUA AY-3) SUE-ANN OPERATING, L.C. 168912 YNA 1 HOPE (WILCOX 7700) ATLAS OPERATING LLC 280779 YORK 1 HOLZMARK (PETTUS 4150) CHANDLER OIL & GAS, LLC 199482 YORK 1 HOLZMARK (WHITSETT) CHANDLER OIL & GAS, LLC 256923 YORK 2-C REDMAR (HOCKLEY D) AMERICAN SHORELINE, INC. 198930 YOUNG GAS UNIT 1 A 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284453 YOUNG GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284286 YOUNG GAS UNIT 1 A 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 270568 YOUNG GAS UNIT 1 A 4H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 284425 YOUNG GAS UNIT 1 A 5H SUGARKANE (AUSTIN CHALK) REPSOL OIL & GAS USA, LLC 284567 YOUNG GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 275682 YOUNG GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 275451 YOUNG GAS UNIT 1 C 2H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 286059 YOUNG GAS UNIT 1 C 3H SUGARKANE (EAGLE FORD) REPSOL OIL & GAS USA, LLC 286058 YOWARD 8 YOWARD (8275) BAR D OIL CORPORATION 087256 ZAESKE-ECKOLS UNIT 1H EAGLEVILLE (EAGLE FORD-2) MARATHON OIL EF LLC 289128 ZALMAN 3 SPEAKS, SW (MIDDLE WILCOX-CONS.) CONTANGO RESOURCES, INC. 185148


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ZALMAN 4 SPEAKS, SW. (SIMPSON) CONTANGO RESOURCES, INC. 204004 ZENGERLE 1 BRANDT (WILCOX DEEP) MAGNUM PRODUCING, LP 200152 ZENGERLE 3 ARNECKEVILLE (FRIO 2520) ARCH OIL & GAS, LLC 163945 ZENGERLE, WAYNE O. 2 ARNECKEVILLE (YEGUA 5290) URBAN OIL & GAS GROUP, LLC 085032 ZIEGLER A 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 275720 ZIMMER 4 E COLETTO CREEK (2300) PETRA OLEUM CORP. 257202 ZIMMER, J. 2 COLETTO CREEK (2100) PETRA OLEUM CORP. 166822 ZIMMER, JOHN 8 COLETTO CREEK (1450) PETRA OLEUM CORP. 166256 ZIMMER, JOHN 9 COLETTO CREEK (2100) PETRA OLEUM CORP. 053136 ZIMMERMAN 01 01H DE WITT (EAGLE FORD SHALE) ENSIGN OPERATING LLC 271351 ZORILLA-MALONE 2 PALO ALTO (6400) ACOCK/ANAQUA OPERATING CO., LP 290640 ZORILLA-MALONE SWD 1 UNA WEST (4250) ACOCK/ANAQUA OPERATING CO., LP 287874 ZUNIGA GAS UNIT 1 PAWNEE (EDWARDS) REPSOL OIL & GAS USA, LLC 221593 1893 OIL & GAS, LTD. UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266481 1893 OIL & GAS, LTD. UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270915 1893 OIL & GAS, LTD. UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266282 1893 OIL & GAS, LTD. UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271846 1893 OIL & GAS, LTD. UNIT B 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277557 1893 OIL & GAS, LTD. UNIT B 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277537 1893 OIL & GAS, LTD. UNIT B 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277677 1893 OIL & GAS, LTD. UNIT B 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 277539 1893 OIL & GAS, LTD. UNIT B 8 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 280260 1893 OIL & GAS, LTD. UNIT B 9 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 280258 1893 OIL & GAS, LTD. UNIT B 10 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 280259 1893 OIL & GAS, LTD. UNIT D 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271530 1893 OIL & GAS, LTD. UNIT D 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271609 1893 OIL & GAS, LTD. UNIT D 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276922 1893 OIL & GAS, LTD. UNIT E 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266451 1893 OIL & GAS, LTD. UNIT G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268796 1893 OIL & GAS, LTD. UNIT H 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270228 1893 OIL & GAS, LTD. UNIT I 1 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 270899 1893 OIL & GAS, LTD. UNIT J 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271607 1893 OIL & GAS, LTD., UNIT E 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272137 7Y 1 PROVIDENT CITY (WILCOX A-1) RINCON PETROLEUM CORPORATION 272722

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