In Reply infer To: RP-2-1 6

Sohlo Petrol euu Coapany Attention: Hr. Cory M. Kerlin Post Office Box 51468 Lafayette. Louisiana 7GM>5

Gentlemen:

Reference 1s code to your Supplemental Plen of Exploration received FeOruery 5. 1966. attended Feoruery 12. 1986. for Loose OCS-G 5644. Slock 290. Sooth Tlnbeller Aroa. This plan Includes tho act ivi t ie* vroposeo for Hells 0. E. and F.

Ia Accordance with 30 Cfk 250.34. revised Decoder 13. 1479. and oor letter oatec January 29. 1979. this plan has ooon oeteralneo to be complete as jf February 26. 1966. and is now being considered for approval.

Your plan control nuefcer 1s S-1800 and should bo referenced in your casteunlcatlon and co respondence concerning this plan.

Sincerel; /ours.

<°"t Sgd ) A. OBMM

Acting Reu'ona) Supervisor Rules and Production

bcc: Lease OCS-G 5644 (OPS-3-2) (FILE ROOM) 1 B f c f c i W/PMOUC Info.^opy of the plan (FUEL. REC.)

rUTolbert:gcw:2/26/86 Olsk U

. A . A . I r n tow***!* mos

O l C«NTf» f TATION

February Itf, 1986

MMMU MANAJjrMfNT p u g ,

FEB 12 1936

Re: Corrections to Supplement P1»n of Exploration OCb-G-5644, Wells 0. f & F Offshore Louisiana

Oear Nr. Talbot:

Per your telephone cal l today, attached are the corrected pages for the abovt referenced Supplemental Plan of Exploration.

Thank you .or your assistance. I f you net 1 anything fur ther, please contact Sharla Blckley at (318) 989-4200 at your convenience.

Sincerel.*,

Cary wi Ker l in Regulatory Supervisor Lafayette D i s t r i c t

• O H I O ] SOHIO PETROLEUM COMPANY

Nr. Michael Talbot Minerals Management Service P. 0 . Box 7944 M e t a i r i e , LA 70010-7944

/org Attachments

LIST OF ATTACHMENTS

A. Description of Dr i l l i ng JMg

B. Let ters from Sohlo Regional Geophysicist

C v i d n i t y & Well Location Plats

D. Structure Maps & Geologic Cross Sections

E. D r i l l i n g Mud Components

F. Projected Air Emission Schedule

Supplemental Plan of Exploration South T1«ba1ler Block 290 Page 4

(B) L i s t of Hud Components

Attachment E 1s a l i s t of the proposed dr i l l ing mud components and

addit ives, includlnq the common and chemical trade name of each

addit ive.

(C) ftfsepus {Missions,

Exploratory drilling operations will be conducted from the surface

s i t e s described In Section (Iv) using the mobile dri l l ing unit des­

cribed In Section (11). Operations will be of a msxlmum duration of

two hundred seventy (270) days.

At the d.-il' site, gaseous emissions will be generated by the rig en­

gines, the ettendant work boat, stand-by boat, crew boat, and helicop­

t e r , and the production testing of possible prospective reservoirs.

Gaseous emissions at the dock site In Venice, Louisiana, will be gener-

eted by the work boat, crew boat and helicopter. Onshore staging for

th is operation will be from existing f a c i l i t i e s , so there w i " be no

signif icant Increase In emissions for this activity. Projected emis­

sions from this act ivi ty have been calculated and are presented 1r.

Attachment F entitled "Projected A1r Emission Schedule".

(0) Coastal Zone Hanagement (CZH) Consistencv Certification

An Environmental Report and Consistency Certification was Included 1n

the Init ial POE. Proposed activities described In this Supplemental

POE wil l also be conducted 1n a manner consistent with Louisiana's

approved CZH programs.

OR ILLING MUO COMPONENTS

SOHIO PETROLEUM COMPANY

Products of IMCO Services ere l isted in this program Equivalent or comparable products are available from NL Baroid, Magcobar and Miichem.

TRADE NAME COMPOSITION

IMCO GEL Western Bentonlte; A natural occurring element containing plates of Si l ica I alumina ( Inert)

IMCO SURLIFT Pre-shaped, wet processed, hlgii density chrysotlle asbestos (a native calcium magnesium si l icate)

IMCO GELEX Co-polymer of polyvinyl ace­tate A malel'- anhydride

IMCO FLOX Polyacrylamide

IMCO POLY RX Proprietary blend containing modified Ugnosulfonates A modified lignite

IMCO RO-III Proprietary blend containing modified Ugnosulfonates A modified lignite I chromate

IMCO C-CORR An organic filming amine

IMCO XO; An Inorganic compound of the b isu l f i t e family

IMCO BAR Mined barite (Ground barium sulfate)

CAUSTIC SOOA Sodium Hydroxide

IMCO LIG L igni te , ground A refined

SOOA ASH Sodium carbonate

for i l lustration purposes, other service companies, SJC.T as

PURPOSE

Primary wall building, f i l ­trate contrln, I suspending agent for water base dri l l ing f luid.

Viscoslfler for upper-hole fluids

Bentonite extender

Selective flocculant to remove dri l led solids from mud

Stabt"ty I f i l t rate control of high temperature dri l l ing fluids

Thinner & f i l t rate control for water base dri l l ing fluids

corrosion inhibitor A oxygen scavenger

Oxygen scavenger

Weighting agent

Alkalinity control

Thinner I water loss tontro'

Removing hardness (calcium)

ATTACHMENT E

SOHIO] SOHIO PETROLEUM COMPANY LOUISIANA « ) W

f i a c i •>••••

January 31, 1986

•"^ttajH "^erunrr

Offshore Operations Support U.S. Dept. of the I n t e r i o r Minerals Management Service P. 0. Box 7944

Mr. 0. W. Solanas, Regional Supervisor FEB 05 /seg

Metair ie, LA 70010-7944

Re: Supplemental Plan of Exploration South Timbalier Block 290 OCS-G-5644, Uelis 0, E & F Offshore Louisiana

Oear Mr. Solanas:

Please find enclosed f i ve (5) Confidential and six (6) Public Infomation copies of the Supplemental r>1an of Exploration (POE) for the above referenced project . Accompanying th is POE are one (1) set of processed seismic l ine data o f fse t t ing each wel l locat ion. Two (2) copies of the Haza.d Study for South Timbalier Block 290 were previously submitted with the i n i t i a l POE on January 3, 1985.

I f you have questions or require addi t ional Information, please ca l l Sharla BUkley at (318) 989-4200.

Sincerely,

Cary wl Kerlin Regulatory Supervisor Lafayette District

SFB/brg

Attachments

c: Mr. W. D. Harris

PUBLIC INFORMATION

SUPPLEMENTAL PLAN OF EXPLORATION

SOHIO PETROLEUM COMPANY

OCS-G-5644

SOUTH TIMBALIER BLOCK ?90

OFFSHORE LOUISIANA

January 31, 1986

LIST OF ATTACHMENTS

A. Description of D r i l l i n g R1g

B. Letters from Sohio Regional Geophysicist

C. V i d n i t y A Well Location Plats

0. Structure Maps A Geologic Cross Sections

E. Projected Air Emission Schedule

SUPPLEMENTAL PLAN OF EXPLORATION

SOUTH TUBAL l i f t BLOCK 290

OCS-G-5644

OFrSHORE LOUISIANA

Pursuant to tho requi rements of 30 CFR 2 5 0 . 2 3 . 1 , Sohio Petroleum Company

s u b m i t s the fo l low ing Supplemental Plan of E x p l o r a t i o n (POE) f o r South Timba­

i l e r B lock 290.

( 1 ) EXPLORATION ACTIVITY

The proposed e x p l o r a t i o n a c t i v i t y f o r the sub jec t t r a c t cons is ts of d r i l l ­

i n g W e l l s " 0 . E A F \ I n a d d i t i o n to the th ree (3 ) we l l s covered In the i n i ­

t i a l POE. The est imated t ime t o d r i l l t h i s w e l l i s about two hundred seventy

( 2 7 0 ) days , wi th a March 3. 1986. a n t i c i p a t e d spudding date .

(11) PROPOSED DRILLING RIG

Soh lo present ly has under cont rac t the M a r l i n 7 semi-submersible d r i l l i n g

r i g , wh ich w i l l be used f o r t h i s p r o j e c t . This r i g i s capable cf d r i l l i n g t o

2 5 , 0 0 0 ' i n water depths of 1 ,000 ' . S p e c i f i c a t i o n s and drawing of t h i s r i g ' s

d i v e r t e r and BOP system a re enclosed as Attachment A.

(111) GEOPHYSICAL WORK

A l l o f the geophysical work preparatory t o I n i t i a t i o n of exp lo ra to r y opera­

t i o n s has been completed. A v e l o c i t y survey may be run on these w e l l s when

t o t a l depth has been reached. No other geophys ica l work i s planned unless

d a t a obtained from d r i l l i n g operat ions necess i ta tes a d d i t i o n a l d e f i n i t i o n

d e t a i l from convent ional r e f l e c t i o n seismic methods.

Supplemental Plan of Explorat ion South Timbailer Block 290 Page 2

A shallow hazard report ent i t led "hazard Study Blocks 290 A 291 South

Timbal ier Area, and Block 781. 782, 824 and 825 Ewing Banks Area" was orepared

by John Chance A Assoc., Inc. and two (2) copies were previously submitted

w i t h the I n i t i a l POE on January 3. 1985.

The South Timbalier Block 290 Hazard Study has been reviewed by Mr. Jack

Golden, Sohlo's Regional Geophysicist. Attachment 8 are le t ters from Mr.

Golden in which he agrees wi th John Chance's conclusions and addresses shallow

hazards at the "0, E A F" wel l sites in South Timbailer Block 290.

Attachment C-1 1s a v i c i n i t y map depict ing the subject t r ac t ' s posit ion

r e l a t i v e to the Louisiana shoreline. No new onshore f a d 1'.ties w i l l be re­

qu i red for d r i l l i ng the proposed exploratory wells Existing service company

f a c i l i t i e s in the Venice, Louisiana Area have suf f ic ient capacity to accommo­

date th is project without modification or expansion.

Attachment C-2 shows the proposed surface location for Well " 0 " , which w i l l

be d r i l l e d as a d i rec t iona l hole. Bottom Hole Location is shown on Confiden­

t i a l copies only. Wells "E A F" w i l l be d r i l l e d as straight holes. The to ta l

depth , water depth and surface locations for each well is as fo l lows:

(1v l VICINITY ANO LOCATION MAPS

Well "0" TO: Mater Depth: Surface Locat ion:

13.500' 430'

13,200 FNL 1 2 . ' . ^ ' FEL

PUBLIC INFORMATION

Supplemental Plan of E x p l o r a t i o n South T l r b a l l e r Block 290 Page 3

J: Water Oepth: Surface L o c a t i o n :

13,500 428

12,COO' FNL 8.675' FEL

we l l "F" TO: 12,000

410 Water D^pth: Surface L o c a t i o n : 10.680' FNL

14.280' FEL

( v ) STRUCTURE MAPS MND CROSS SECTIONS

Structure maps and c ross -sec t i ons are inc luded i n the f i v e (5) conf i d e n t i a l

cop ies of t h i s Plan as Attachments -1 th rough 0-4. Depths shown on c ross -

sec t i ons and s t r u c t u r e maps are sub-sea measurements.

(A) Oi l S p i l l Cont ingency Plan

Sohio Petroleum Company 1s a member of Clean Gulf Associates (CGA) and

would J t l l i z e t h e t o r g a n i z a t i o n ' s equipment t o c lean up an o i l s p i l l .

The c losest CGA bases are at Grand I s l e , Venice and Houma. Lou is iana ,

respec t i ve l y . Response times f o r CGA c c is t Response Uni ts rom these

loca t ions , w o j l d be 10, 12 and 13 hours r espec t i ve l y Manpower ta

operate the CGA's equipment would be provided by Pete'son Mar i t ime,

Services, I n c . . whose personnel are t r a i n e d f o r o i l s p i l l c lean up

operat ions. S o h l o ' s superv isory personnel would d i r e c t the clean up

operations u n t i l success fu l l y completed. Add i t i ona l d e t a i l s can be

found in S o h l o ' s 1985 O i l S p i l l Contingency Plan which has been

approved by the M ine ra l s Management Serv i ce .

( v i ) OTHLR R E I E V K . T DATA

Supplemental Plan of Exploration South Timbalier Rloek 290 Pagt 4

(B) List of Mud Comoonf t i

Attachment E Is a Hst of tht proposed drilling mud components and

additives, including the common and chemical trade name of each

additive.

(C) Gaseous Emissions

Exploratory drilling operations will be conducted from the surface

sites described 1n Section (iv) using the mobile drilling unit des­

cribed in Section (11). Operations will be of a maximum duration of

two hundred seventy (270) days.

At the drill site, gaseous emissions will be generated by the rig en­

gines, the attendant work boat, stand-by boat, crew boat, and helicop­

ter, and the production testing of possible prospective reservoirs.

Gaseous emissions at the dock site 1n Venice, Louisiana, will be gener­

ated by the work boat, crew boat and helicopter. Onshore staging for

this operation will be from existing facilities, so there will be no

significant increase in emissions for this activity. Projected emis­

sions from this activity have been calculated and are presented In

Attachment E entitled "Projected A1r Emission Schedule".

(0) Coastal Zone Management (CZM) Consistency Certification

An Environmental Report and Consistency Certification was Included in

the initial POE. Proposed activities described in this Supplemental

POE will also be conducted in a manner consistent with Louisiana's

approved CZM programs.

Marlin

The MARLIN NO 7 a column stabilized semi-submersibie drilling vessel n one ol the largest and most versatile offshore dniimg rigs aver ouiit Capable of opwratiig m 1.000-ft water o«rpth m almost all sea conditions theMARuN s o f carries the certification of hoth the American Bureau ol Shipping and i m Umted States Coast Guaid Designed to afford ample storaoe capacity to' suooi'es a n j built with air conditi j - e d quarters for 70 persons ihe ng can operate for a con-jideraoie period of '• "e without servicing f 'om the shore

A t t a c ' w n t A

GENERAL INFORMATION

P R I N C I P A L PARTS

The Martin No 7 consists ot three principal parts

1 The lower hulls, two barge-Shaped members which provide bouyancy while under tow. stability while on location, and storage for fuel oil and ' ' ' i l l water whi le drilling

2. The platform, a barge-like design, offers support for the derrick substructure, ell dril l ing machinery, and the quarters for 70 persons.

3. The six cylindrical columns join the lower hulls to the platfonn as well as offer space for chain lockers and atorage of bulk mud and cement.

C L A S S I F I C A T I O N

1 The vessel is constructed with accordance to rules of the American Bureau of Shipping as of June 1973. and carries the classification of Al Column Stabilized Drilling Unit In addition, all mooring equipment shall be ABS certified and snail be classified M

2. In addition, the vessel is constructed to meet the applicable regulations of the USCG. SOLAS. Inter­national Load Line Regulations, and US Public Health Service.

PRINCIPAL DIMENSIONS

LOWER HULLS:

LENGTH 330

WIOTH 40*

DEPTH 23'

SEPARATION: 125'

PLATFORM:

LENGTH: 222*

WIOTH 175"

DEPTH 16"

HELIPORT: LENGTH 83' WIDTH 83"

MAX LOAO 150 1b per square foot CYLINDRICAL COLUMNS: D'AMETER 30

HEIGHT Such as to give 110' bot­tom of lower hull to bot­tom of platform and 126' bottom of lower hull to main deck of plat form

FACILITIES & EQUIPMENT

STORAGE FACILITIES 4 Dril l water tanks with t capacity of 10.000 barrels

2 Potable water tanks with a total capacity of 1.500 barrels

2 Fuel-oi l tanks with a total capacity of 4.000 barrels

2 Fuel-oi l day tanks wth a capacity of 1.600 gallons

1 Lube oil tank with a total capacity ol 45 barrels

4 Act ive mud pits with a capacity of 2.000 barrels

6 Preaaure tanks with 11.500 cubic feet of total capacity Any of these tanks can be used for either bari te or cement A dual pneumatic pressure transfer system assists the loading, unloading, and transfer of bulk materials A surge tank and weigh­

ing scale are provided for the mixing of bulk barite Storage area of 1.500 square feet can be allocated to sacked cement and barite

2 Pipe racks with total area of 10.900 square feet The drill pipe rack covers 8.000 squr.re feet, while the remaining 2.900 square feet are used for riser pipe storage

2 Manitowoc 135-ton vicon torque converter pedestal-type iiftcranes with i20 long booms

QUARTERS

Air conditioned quaners for seventy persons, including one galley, one pantry, one chill walk-in reefer, control room and hospital Maximum occupancy of each stateroom is four persons The

M A R L I N NO. 7 CONT. - Page 2

Mii-Hiii

galley, arranged lor caletena-styie service, is equipped with all the most modern equipment, including such items as a charcoal grill and steam table

A large recreation room, furmshad with a coior television and card table, is provided for off-duty personnel

Comple te laundry facilities, including two washers, two dryers and one extractor, are furnished for crew conver ?nce

A complete control room is located adjacent to the heliport on top of the quarters to provide unlimited visibi l i ty of almost all portions of the rig From here, th rough dual electrical mimic panels, one person can moni tor and control the vessel's posit ion and stability, in add i t ion, this person also has access to the remote shu tdown controls for the B.O.P. system.

Al l spaces within quarters are lit by means of mercury vapor floodlights and a small, wall mounted, f luorescent reading lamp is located over tha head of each ber th .

A gaitron.cs five-party phone system is installed for comple te communication with all parts of the vessel

A Demco model WT-500QC waste treatment plant, wi th capaci ty to service eighty persons and handle up to 5.000 gallons per day of sewage waate. is provided

A T r i t o n Model FW-100001 watermaker is incorporated into the saltwater system to produce up to 440 gallons per hour of fresh** ater uaing waste heat from tne dieeel engines.

S A F E T Y EQUIPMENT

2 AfJOrine Safety Equipment thirty-foot covered life­boats, each capable of carrying 04 persona, are prov ided. Powered by 40 HP Westerbeke Oiesei Engine with hydraulic starter, theae boats are capable of speeds up to 10 knots. Each boal is equ ipped with food and water in waterproof com part ments for survival of three days.

2 ?0- per son life rafts

8 R ing buoys

80 Li fe preservers

i General alarm system

1 Dry chemical-type fire fighting system

1 Light water-type fire fighting system

25 i s - i b portable C 0 | fire extinguishers.

7 S-lb portable dry powder extinguishers

1 100-lb dry chemical wheel-mounted extinguisher on hei ipon

2 Breathing apparatus

2 Fire fighting suits

1 Resusotator

2 Stretchers for 206 and Boelkol helicopter

2 Stretchers - Stokes Navy Type

1 Green rescue transport splint

6 Hand fire axes

1 Fog signal

1 Set obstruction lights

MOORING 4 Model 500030 dual anchor chain windlasses

compieta with wildcat assemblies for 3" anchor chain; two air actuated friction band brakes; two slow soeed bull gears: two air actuated SAE spline clutches; two air actuated chain stoppers: two electrical Selsyn-type footage counter senders: two sets of installation load cells. Each dual wind­lass unit includes one EMO 0-79 traction motor with coupling, one motor oack-stopping brake: and one gear box.

1 Remote windlass control console to operate four dual windlasses. Model 500 030. from the barge control room complete with a mimic panel of the vessel.

« Local windlass control consoles for controlling and monitoring pneunatic and elect neal functions for one dual windlass. Each is enclosed within a 6' x 6' fiberglass house, and elevated to a height of approximately 4' off tha main deck. Located just behind each dual windlass, the console is in a position to give sn unobstructed view of both wild­cats and the spline clutch.

1 Electronic anchor line tension indicating and recort ing system for an eight-point mooring system, incorporating the new Baylor modified electronic load ceils

1 Complete vessel position indicating and recording syste r • consisting of Honeywell RS-505 dual channel acoustic position indicator system as described in data sheet 1861. including

1 Control indicator unit with position monitor • 'arm.

1 Dual signal processor cabinet with automatic channel switching.

i Oual vertical reference unit

1 Four channel output buffer jard for roll, pitch, and X. Y. position recording or remote display

4 Hydrophones each with 300' of waterproof cable

2 Subsea reference beacons with rechargeable battery packs

Provisions for recording hole position

A N C H O R S ANO CHAINS 8 4000' continuous lengths 3" stud link oil rig quality

certificated anchor chain manufactured in Japan

a Proof Test — 693.000 Ibs.

b Break Load Test — 1.045.000 lbs

C Total Weight Approximately — 2.497.400 lbs

d. Studs welded both ends.

16 Approximately 30.000 lbs Baldt moorfast certifi­cated anchors adiustable for 34* or 50* fluke angle

8 8' diameter x tO' long. 4 watertight compartment buoys with stay bars.

8 Sets of 2" buoy pendant lines consisting of 4 200' lengths and 2 100' length each

BALLAST CONTROL ANO WEATHER OATA 1 Ballast control and tank gauging system, a com­

plete console with vessel mimic panel to include the following

a. Ballast control system.

b Tank gauging system.

Weather data consisting of:

1 Model 14457 wind speed and direction in­dicating and recording system with deck-mounted readout and recorder

1 Model 13528 wave profile recording system

* Model 15373 vessel heave indicating and recording system

1 Model 21015 pitch and roll recording system

DRILLING PUMPS ANO M U O SYSTEM

2 National Typa 12P-1S0. 7'/ 4" tnpiex single-acting slush pumps Each unit ia powered by two EMD Model 0-79 electric motors Each pump is equip­ped with s suction dampener and a Hydrii Type K-20-5000 pu'sation dampener

3 Mission 6 x 8 centrifugal pumps with 12" impel­lers used for mud mixing, desilting and degassing These pumps are coupled to a 75-HP 1.800 RPM. 3-phase 60-cycle 230/460 vol? TEFC motor

? Washdown and drill water pump units each con-Sating of 2" x 3" M-ssion centrifugal pump with 7 ' y impeller connected with 40-HP. 3600 RPM. 3-phase. 60-cycle. 230/460 volt "Marine Type" motor

2 Mission 6" x 6" centrifugal pumps coupled with 50-HP motor to precharge the National tnpiax mud pumps

4 Model 74-Q-15 "Lightnin" heavy-duty mud agitators, complete with 15-HP1150 RPM. 3-phase. 60-cycle. 230/460 volt, explosion-proof motor.

1 Model NS-1 "Lightnin" chemical minor coupled with %-HP. 1750 RPM. single-phase. 115 volt, explosion-proof motor.

1 Hutchison-Hayes model 54860-DV Rumba Shale Shaker

2 Goodall rotary hoses. 37," x 75'. 10,000 psi test with standard 4" API male connections

2 Model T16-4" Pioneer SHtmaster units consisting of 16 DSC 40o CV Siltmaster 4" cyclones with replaceable poiyurethane bladders

1 Swaco total degasser

HOIST ING EQUIPMENT

1 National Tyne 1625 OE drawworks complete with standard equipment rated at 3.000 input HP. This drawworks unit is equipped wtth sand reel assembly complete with capacity of 30.000' of • V line. Orawworks is driven by two EMO 079MB electric motors it also includes ELMAGCO standard Model 7838 eddy current brake. Provision in dual motor drawworks <*"• 4 to provide for later addition of a third motor i • me field

1 National power brake unit with brake control stand and necessary intermediate pneumatic controls for 6-B Micromatic Orillmg Control and Crown-O-Matic Block Protector

1 1%" « 7500' flexcore rotary drilling line

1 * / „ " « 15.000' galvanized 6 x 7 sand line.

1 National Type C495 rotary complete with rec­tangular base and guard. 49%" table opening. 65 centerline spacing. 750-ton static load rating, powered by EMC-D79 motor Rotary to be coupled

M A R L I N N O 7 C O N T • P a g e 4

t o a National Transmiss ion A r r a n g e m e n t " C " Comp le te wilh shaft ing, c o u p l i n g s , a n d coup l ing spacer to provide two s p e e d s h i f t i n g with no reverse gearing

1 Va rco Type MPCH h inged p m d r i ve Master Casmg B u i h i n g

1 Ve rco »36S0 Type 27-HOP ro l l e r ke l iy bush ing

1 Spl i ' -<asing bushing. V a r c o a 10167 to ' i t C495

ro tary with insert for 20" O O c a s i n g .

1 160' x 40' base » 18' t op T - L e g D y n a m i c derr ick bo l ted construct ion, c o m p i e t a w i t h A325 h igh -s t rength bolts snd A n c o l o c k o u t s Derr ick has a ra ted static hook load c a p a c i t y o f i 000 ooo lb. per A P I standard 4E wi th 12 l ines s t r u n g t o the travel ing b lock Dead man is N a t i o n a l t y p e wire to be posi t ioned outside derr ick l e g .

1 Spec ia l Crown block r e q u i r e d t o span 18' beam centers (wster table) w i t h f a s t l i n e outs ide of derr ick Block consists of 9 — 6 0 " sheaves arranged w i t h 5 down and w i th 2 f s a t h n e a n d 2 deadl ine sheaves topside at skewed a n g l e s Ca t l i ne sheaves shal l be bronze bushed.

1 Rucker Motion C o m p e n s a t o r Assemb ly . Model 18/400. 18' compensa t ion s t r o k e 400.000 Ibs compensat ion hook c a p a c i t y at 2 .300 psi (2.400 psi rs ted) . over 300' m i n i m u m r e s p o n s e speed, c o m ­p le te with necessary a i r p r e e e u r e vessels dr i l lers con t ro l panel, and air c o m p r e s s o r s .

1 Nat iona l Type 660-H-SOO t r a v e l i n g Mock rated at 500- ton capacity and i n t e g r a l l y m o u n t e d w i th in the Rucker compensator

i Nat iona l Type "H-500" h o o k c o m p l e t e w i th conven­t iona l bail and rated at 5 0 0 - t o n capac i t y .

1 Nat iona l Type P-SOCT s w i v e l . 703483 comple te w i t h standard bail. 500 - ton r a t i n g

1 L a m b hydraulic p ipe h a n d l i n g h a n d to be mounted mvened in derrick over d r a w w o r k s Designed to hand le all tubular mater ia l f r o m 3 V," d r i l l p ipe to 24" r iser pipe at a m a x i m u m r a d i u s a r m of 26 capable of 180* of rotat ion

1 Model TCB Koomey C r o w n - o - m a t i c for Nat ional drawworks

1 Hex keliy. SV," x 3VT x 54" l o n g ove ra l l . 5 V work ing space. " V 0 0 top upse t w i t h 6 % " API L M Box. 6 V O 0 bot tom upset w i t h 4 % " I D R H pin down

1 O M S C O 6% API box a n d p m . 15.000 ps. kel iy valve

1 Foster Ai r Power kel iy spinner Type 77

2 Va rco S3754 5" type ' SOXL" ex t ra l ong dr i l l p ipe s l ips

1 Va rco «2503 type "OCS-L " dr i l l co l lar sl ip, 6 \ to 8V«" range

1 Dr i l l co l la r s l ip Varco #2507 w i t h c i rcu la r bu t tons for 6 " t o 9%" col lars

2 L o w e r ke l iy .afety valves for 5 " X H dr i l l p ipe

i E lec t r ic 092 w i re l ine uni t

1 Dr i l l co l la r s l ip Varco »2550 w i t h c i rcu la r bu t tons l o r 5V, " t o 7" col lars

1 C a a i n g s l ip Varco *5329. mu l t i - segmen t , w i th c i r c u l a r bu t t ons for 20/* O.D. caa ing .

1 Inser t b o w l . Varco #8810 for 1 3 % ' a n d 11 */ 4" cas ing

1 C a s i n g s l ip Varco "5313. mu l t i - segmen t , w i th c i r cu la r bu t tons for 13%" O D cas ing

1 Inser t bow l . Varco #6609 for 10V." and 9*4" O D c a s i n g

1 C a s i n g sl ip Varco ' 5307 . mu l t i - segmen t wi th c i r cu la r bu t tons for < 3 \ cas ing

1 Ro ta , y s l ip Vsrco #4134. c o m p l e t e w i t h 7" inserts for 7 " O .D . cas ing .

1 V a r c o 500- ton i 3 V s l ip - type e levator body, sir-m a n u a l ope rs ted . comp le te w i t h necessary guides a n d s l i p assembl ies.

1 Set l ink adapter for uae w i t h 500- ton cas ing elevator l i nks .

1 Set B J 500- ton x 144" l ong e levator l inks

1 (2) 2%~ • 132" elevator l inks . 350 - ton ra t ing

1 B J Z i p l i f t assembly w i th elevator, l inks , and don head

2 B J t y p e " G G " center la tch e levator for 5" O 0 dn i i p i pe

1 V a r c o Mode* 10 a i r -powered s p m m n g wrench ngnt a n d left ro ta t ion , comp le te w i th ro l le rs for any one s ize d r i l l p ipe

1 (2) B J t ype ' D B " rotary tongs 3%" to 17" range

1 V a r c o "33013 MP-R" dr i l l co l la r safety c lan.p

i B J w i re l ine gu ide assembly c o m p l e t e

i B J w i re l ine gu ide hand l i ng assembly comple te

1 4AR K i n g wire l ine s t r ipper

MARLIN NO. 7 CONT • Pagt 5

1 4SC King circulating nead with 5" x X-hol* connection

1 Gray inside B C P

MARINE SYSTEM EQUIPMENT

2 1 % " Cameron 2000 pal WP B.O.P. Stack

i Collet connector Model 70 hydraulic with 2 l % " 2000 psi WP RX-73 face to face M6 clamp hub top including .IX gasket, with ST/STL lined ring grooves anc manual override.

1 Blowout preventer. Cameron Type "U" sirtgle unit 21%" 2000 psi WP with RX-73 face to face #18 clamp hub with two 3%" SOOO psi WP BX-1S4 clamp hub outlets assembled with shear rams, with wedgeiocks. snd balance chambers with ST/STL lined ring grooves.

1 Hydrii blowout preventer. 2 1 % " 2000 psi WP clamp hi-b bottom and studded top with ST/STL lined ring grooves and all standard accessories.

1 Spool adapter. 21 %~ 2000 psi WP RX-73 face to face •18 flange bottom and 2 1 % " 2000 psi WP "AX" clamp hub top

24" Riser System

1 Collet connector Model 70 hydrsulic with 2 1 % " 2000 psi WP RX-73 face to face «16 clamp hub top with AX gasket and manual override ST/STL lined ring grooves.

20 Riser pipe 24" O D x %" wail with RCK riser con­nector ends. 50* long with integral 3%" choke and kill lines X-52.

1 Riser pipe 24" 0.0. x %" wall with RCK riser con­nector ends. 40' long with integrsi choke and kill line.

3 Assorted riser pipe lengths.

1 Telescoping |omt 24" Marine Conductor with RCK box riser connector bottom and type "R" pin riser connector top, 45' stroke with remote pressure operated seal with integral 3%" choke and kill lines rated tor 10.000 psi WP

1 Ball |0int 2 i%" 2000 psi WP RX-73 clamp hub bottom x 24" Type RCK box riser connector top. 10* deflection pressure balanced

13%" Cameron 10.000 pel WP B.n.P. stack

1 Collet connector Model 70 hydraulic with 13%" 10.000 psi WP BX-159 clamp hub top including AX gasket with ST/STL lined ring grooves with manual unlock

1 Blowout preventer. Cameron Type "U" double unit 13%" 10.000 psi WP with BX-159 clamp hub top and bottom with four 3%" 10.000 psi WP BX-154 clamp hub outlets assembled with shear rams in top unit and pipe rams m bottom unit witn wedgeiocks and balance chambers with ST/STL 'med ring grooves

1 Blowout preventer. Cameron Type "U" double unit 13% 10.000 psi WP BX-159 clamp hub top and bottom with four 3%" 10.000 psi WP BX-154 clamp hub outlets with wedgeiocks and balance chambers with ST/STL lined ring grooves and 5" pipe rams in both cavities.

1 Blowout preventer. Cameron Type "A" 13%" 5.000 pal BX -159 clamp hub bottom with studded top with ST/STL lined ring grooves and all standard accessories. 5000 pal WP.

1 Spool adapter. 13%" 5000 pai WP BX-180 flanged bottom and 13%" 10.000 pai WP AX damp hub top with ST/STL lined ring grooves

10" Riser System

1 Collet connector Model 70 hydraulic 13%" 10.000 psi W ° BX-159 clamp hub top and manual override including AX gasket with ST/STL lined ring grooves.

1 Ball joint i j % " 10.000 psi WP BX-15 clamp hub bottom and 16" RCK box riser connector top. 10* deflection and pressure balanced.

20 Riser pipe 16" x %" wall with RCK riser connector encs 50' long with integral 3%" choke and kill lines X-5.? pipe

4 Asserted riser pipe lengths.

1 Telescoping joint 16" Marine with RCK riser con­nector bottom end type "R" pin riser connector top. 45' stroke with remote operated seal with integral 3%" choke and kill lines

C A M E R O N SUBSEA HYDRAULIC CONTROL SYSTEM FOR OFFSHORE DRILLING UNIT

1 Combination air and electric 3000 osi WP automatic pump-accumulator unit consisting of following components mounted on heavy-duty structural steel skids complete with all necessary mani­folding:

a Accumulator package consisting of eight Model NSCUA-35-3 3300 ps. WP USCG approved hydro-pneumatic accumulators

M A R L I N NO 7 C O N T - P a g *

b 300-gaiion Uu«3 reservoi r

c 100-gaiion soluble o i l rese rvo i r complete

2 1 500 capacity subsea h o s e reels mounted on heavy-duty structural s teel f l oo r s tand Two 1000' lengths of subsea c o n t r o 1 h o s e reel , each subsea hose containing one i " l O s u p p l y hose and one h o s e consisting of t h i r t y - n i ne V n " I D pi lot hoses

2 Subsea hydraulic ret r ievable c o n t r o l pod. each p o d con ta ins sufficient valves a n d man i fo ld ing to opera te all B O P f u n c t i o n s *o provide 100*4 redundance Al l 4-way va lves are 3-posi t ion. spr ing-center type for i s o l a t i o n of any g iven f u n c t i o n . Al l pod c o n n e c t o r s are retractable, p a c k i n g type

1 E m e r g e n c y p o w e r b a t t e r y p o w e r p a c k a g e c o m p l e t e with bat tery c h a r g e r and automat ic sw i t ch i ng components in even t of loss of h g e lec t r i ca l power

1 10.000 psi choke, k i l l m a n i f o l d wi th one CIW pos i t ive , one CIW ad ius tab ie c h o k e l ine, two l ines e q u i p p e d with CIW a u t o m a t i c d r i l l i n g chckes and o n e 3" circulating line Al l t i nes a re connec ted in to a gas separator unit

D I V E R T E R S Y S T E M

1 R e g a n support sys tem, t e l e ? - e p i c joint Type K F O S . nom. 24" x 4 9 % " r o t a r y t ab l e comple te wi th f l o w l ine housing in tegra l d i v e r t e r bal l |omt and r i se r p in

1 S u p p o r t ring: Type KFOS c o m p l e t e w i th 4 hydraul ic r o t a t i n g dogs snd 4 h y d r a u l i c l a t c h i n g dogs.

1 H a n d l i n g tool, diverter a s s e m b l y : T y p e HT-2 . nom. 2 4 "

S U B S E A B.O.P. S T O R A G E A N D H A N D L I N G E Q U I P M E N T

2 Hydrau l iea l l y operated b l o w o u t preventer storage s k i d s which also serve as a s u p p o r t i n g spider for c o n n e c t i n g the two c o m p o n e n t s of the 13V," subsea stack One sk id is e q u i p p e d w i th test and s t o r a g e stumps lor the 13V, ' B O P stack ano the s e c o n d skid is equ ipped w i t h a test and storage s t u m p for the 21 V«" B O P s tack

1 100- ton capacity overhead t r o l l e y un i t for assist m h a n d l i n g and connec t ion of s u b s e a B O P stacks

R I S E R T E N S I O N E R S Y S T E M — 6 4 0 . 0 0 0 L B S .

4 O u a l compact t e n s i o n e r s — e x t e n d e d life model 80 000 ibs 50 wire l ine t rave l IV . " d iameter wire

l ine g rooves . 65 O 0 specia l Rucke r sheaves wi th taper roi 'er bear ings Pucker long- l i fe , oasy ma in ­tenance cy l inder

4 G u i d e l ine tensioner—16.000 lbs. 40' wi re lme travel . 28 O D special Pucker sheaves V dia­meter w i re lme grooves Pucker l ong- i . e easy ma in tenance cy l inder

4 Ingerso l l -Rand air compressor w i t h Output Of 15 c f m at 2500 psi to prov ide air l o r r iser tens ioners . gu ide l i ne tensioners. and dr i l l s t r i ng compensa to r .

M A I N P O W E R S Y S T E M

2 E M O M o d e l M016E8 . 1400-KW. 675 vo l t . AC diesel e lec t r i c mar ine dr i l l i ng power un i t , i n c l u d i n g EMO A20-6 generator .

1 EMO Mode l M 0 1 2 E 8 . 1050-KW. 675 volt diesel e lec t r i c mar ine dn l l i ng power un i t , i n c l u d i n g EMO M o d e l A 20-6 generator

13 EMO D- 79MB OC dr i l l i ng mo to r s w i t h 480-V TEFC b lower moto rs

1 C a t e r p i i l a r - G E diesel e iec tnc set for emergency use Drives a GE gene 'a to r as f o l l ows 250-KW. 312-KVA c u s t o m 8000 AC genera to r . 480 volt mar ine

1 Elect r ic Mach ine ry C o . 5 uni t M o d e l Thy r i g SCR DC d r i l l i ng con t ro l sys tem.

1 C o m p l e t e Hunt Dynece i l f i l t ra t ion air c leaner sys tem fo r all E M D eng ines and m o t o r s

2 J o y M o d e l TA565&WW4 Twis ta i r Rotary Screw packages de l iver ing 565 c f m at 125 ps i fo r a to ta l of 1130 c f m free air

D R I L L E R S R E M O T E C O N T R O L H O U S E

1 C o m p l e t e se l f -conta ined i e m o t e d r i l l i ng - o n t r o l house l ocs ted on derr ick f loor Th is a l lows .tnl ler a sh i r t -s leeve env i ronment m w h i c h — f r o m oi ther s i t t i ng or s tand ing pos i t i on—he can mon i t o r r i d c o n t r o l the fo l l ow ing sys tems

a B O P shu tdowns and con t ro l s

b D r i l l i ng opera t ion

c M u d sys tems

d M o t i o n compensa to r con t ro l s

D R I L L P I P E

I 12.000' s t r ing of 5" Grade E dr i l l p ipe , cons is t ing of 275 lomts of 5 O O 19 50 lb G r a d e E range 3 seam ess API in terna l -ex terna l upse t d r i l l p ipe wi th

MARLIN NO. 7 CONT - Pag* 7

6%" O 0 Hugh** fiashweid :ool |omts with 5" « h o ' * connection* and 16* taper elevator shoulder and with 6%" 0 0 > 3V," I D Hughes fiashweid tool |Oints with X-hole connections. 18* taper elevator shoulder

1 3.OCX)' string ol 5" Grade G drill pipe consisting ol 69 |omts ot 5" 0 0 l 9 50it> Grade G range 3. seam­less API internal-external upset drill pipe

14 7* / 4 ~OD x 2'Vu" I 0 x 43' long ani l collars 6 \ ' ' API reg boa • pin connections zip grooved lor slips and elevators hard band between grooves

14 7" O O x 2 ' V I.O. x 43' long drill collars 5" x-hole box x pm connections zip grooved for slips snd etevators hard band between grooves.

14 6 ' / 4 " O.O x 2'V.a" I 0 x 43' long dri l l collars. 4%" x-hole box x pin connections zip grooved tor slips end elevators hard band between grooves

P U M P S

2 Bi lge pump units consisting of Mariow Model 4E3BEL. 4" x 6". self-priming centrifugal pump, wi th 12" impeller Onven by 20-HP 1.860 PPM. 3-phase. 60-cycle. 230/460 volt. TEFC. "Marine Duty' ' motor Pates 360 gpm at 102' TOH

4 Ballast pump units consisting of Crane-Deming double suction centrilugal pump. 12" x 10" x 14%" bronze fitted, and dnven by 75-HP. 1.660 RPM. 3-phase 60-cycle. 230/400 volt TEFC vertical moto> Rated 3.500 gpm at 70' TOH

2 Fire water pumpa each consisting of 3" x 4" Mission centr i fugal pump with 6%" bronze impeller, coupled with 75-HP. 3.600 RPM. 3-phase 60-cycle. 230/400 volt motor.

1 Brake-cooling system consisting of a 2" x 3" Mission pump coupled with 15-HP explosion-proof motor Th* assembly is jsed for brake cooling on t h * drawworks

4 Diesel fuel and waste oil pump units each con­sisting of Worthington rctary pumps. Model 6GAUM coupled to a 5-HP. 1 800 RPM. 3-phase 460 volt motor pump rated at 50 gpm at 25 psig

2 Sea water pumps consisting of a 6" x 6" Mission centr i fugal pump with 12" impeller connected to 75 HP. 1.600 RPM. 3-phas*. 60-cyde. 230/460 volt TEFC motor

2 Model S-3005 potable fresh water sets including the following

2 15AH-268-DP pumps driven by t 750 RPM 3-phase 60-cyde 230/460 volt motors capable of 45 gpm at 160 TOH

1 TS3156 tank set io include 1—315-gaiion galvanized receiver

FISHING TOOLS

1 Complete set of fishing tools for contractor furnished downhole tools

PAINTING AND SURFACE PROTECTION

Hulls

Above the 16' water line the hull is sandblasted, primed with zinc, and coated with an epoxy color coat

All interior access spaces and pump rooms sre blasted primed and epoxy color coated as called form the spiCifications

Ban tst and dmi water tanks are cleaned and coated with Etcard Type 2

Fuel Ml tanks are cleaned and left bare

C o l u m n

All columns and bracing are blasted, primed, and epoxy color coated Chain lockers are cleaned and given one coat of fish oil P-Tank room has been wirebrushed primed, and then coated with enamel

Pletform

All exterior surfaces are sandblasted, primed with zmc. and coated with an epoxy coating

AH mtenor work spaces have been cleaned with wire brush. pnm*d and coated with an enamel.

interior of mud pits has been coated with coal-tar eooxy

Potable water tanks have been finished out with 12 mil epo«y

RENTAL EQUIPMENT

i Halliburton t<vin HT-400 Cement pump sxid E.v • pump is driven by an EMO 0-79 OC motor and •*> equipped with a relief valve set at 12.000 pn

DIVERTED ARRANGEMENT FT.AKJ MAgLIKJ MO 1

t

DIVERTER PANEL " DRILLEP CONSOLE

MAJUIN NO. 7

GAUGES

INCREASE DECREASE O

OPEN

o RETRACT

O RETRACT

O RETRACT

c RETRACT

c OPEN

o OPEN

o OPEN

o OPEN

o CLOSE

o EXTEND

O EXTEND

o EXTEND

c EXTEND

o CLOSE

O CLOSE

O CLOiE

C CLOSE

DIVERTER PACKER

LOCK DOWN DOGS

INSERT PACKER LOCK DOWN DOGS

SUPPORT RING ROT DOGS

SUPPORT RING DOGS

FLOWLINE SEAL

DISCHARGE STB.

SHALE SHAKER

DISCHARGE PORT

D R I L L I N G NODE:

DIVERTER PACKER I N OPEN P O S I T I O N , PORT AND STARBOARD DISCHARGE VALVES ZM CLOSE POSITION, SHALE SHAKER VA.VE I N OPEN POSITION. INSERT PACKER LOCK DOWN DOGS EXTENDED.

FUNCTION I :

CLOSE DIVERTER PACKER - AUTOMATICALLY OPENS PORT AND STARBOARD DISCHARGE VALVES AND CLOSES VALVE TO SHALE SHAKER.

AFTER FUNCTION I :

TO DIRECT FLOW, I T W I L L PE NECESSARY TO FUNCTION EACH VALVE I N D I V I D U A L L Y .

S O H I O PETROLEUM COMPANY

TO: Ray Broussard DATE: January 23, 1986 Lafayette

PROM: Jack Golden

SUBJECT: Sit* Clearance - South Tiaballer 290 (OCS-C-5644) Propoaed "0" Location

Culf Coaat Division Jeophyslcists conclude that no ale.nl fl-.ant ahallow dri l l ing hazarda exlat within SOO fear of the South Tiaballer *90 "D" location (13,200' FNL, 12-500* FEL; W.D. 430').

-suits and report of a ahallow hazard survey conducted by John E. Chance saoclatea for Sohio Petroleua Coapany over tract 290 hava been reviewed,

asi are In agreeaent with their findings and conclude that:

1) No obstructions are observed on the ae- floor within 500 feet of the proposed location.

2) Selsalc data Indicate a thick sequence of parallel beda (over 1,500 feet) dipping southeastward at approximately 40 feet par s i l e .

3) No faults or gas accumulations are observed within ttu. upper 1,500 feat below aud line at the propoaed location.

Attachments consist cf annotated copies of the SMS, pinger, and rainisleeve records for lined 32 and 51 of the hasard survey.

cc: D. Balalnger u. Harris J . Strasen (w/attachment;) R. Boyce B. Cohn M. Keeae J . Dorter A. MacKeon (w/attachment:,;

972L/AM/acw ATTACHMENT B

S O H I O P E T R C L t U M C O M P A N Y

TO: Ray Broussard Lafayette

DATE: January 23,

FROM: Jack Golden

SUBJECT: Slta Claaranca - South Tiaballer 290 (OCS-C-5644) Proposed "E" Location

Culf Coaat Division Geophysicists conclude that no significant shallow dri l line, hasards ss ls t within SOO fsst of the South Tiaballer 290 E" Location (12,000* FNL. 8,67;* FEL: W.D. 428').

The results and report of a shallow hazard aurvav conducted by John E. Chance and Associates for Sohlo Petroieue Coapany over tract 290 have bean reviewed. We ara In egreeaent with their findings and conclude that:

1) No obstructions are observed on the sea floor within 300 feet of t.-proposed location.

2) Seisaic data Indicate a chick, sequence of parallel beds (over 1,500 feet-dipping southeastward at approxiaataly 40 feet per al io .

3) 'io faults or rtas accuaulatlons ar* observed within the upper 1.300 feet below audlln* st the proposed location.

Attachments consist of annotated copies of tha SMS, pinger, and oinlsiecve records for lines 36 and 51 ui the hazard survey.

J . Strasen (w/attachaents) R. Boyce B. Cohn i . Naasa J . Dotter A. HscKeon (w/attachaents)

cc: D. Balalnger D. Harris

972L/AM/scw ATTAChTTENT B

S O H I O P E T R O L E U M C O M P A N Y

TO: Ray Broussard Lafayette

DATE: January 23, 1986

FROM: Jack Golden

SUBJECT: Site Clearance - South Tiaballer 290 (OCS-G-5644) Propoaed "F* Location

Gulf Coaat Division Geophysicists conclude that no significant shallow d r i l l i n g hasarda exist within 500 feet of the South Tiaballer 290 "F" location (10,680' FNL, 14,280' FEL; W.D. 410').

The reaulta and report of a shallow hazard survey conducted by John E. Chance and Aaaoclates for Sohio Petroleum Coapany over tract 290 have been reviewed. Wa are ln agrceaent with their findings and conclude that:

1) No obstructions are observed on the sea floor within 500 feet of che proposed location.

2) Seisaic data Indicate a thick sequence of parallel beda (over 1,500 feet; dipping southeastward i t approxlaately 40 feet per al le .

3) No faults or gaa accumulations are observed within che upper 1.500 feet below mudline at the proposed location.

Attachments consist of annotated copies of the SMS, pinger, and minialeev* reco-ds for lines 31 and 50 of the hazard survey.

J . Strasen (w/attachaents) R. Boyce B. Cohn M. Nease J . Dottsr A. MacKeon (w/attachaents)

cc: D. Balsinger D. Harris

972L/AM/acw ATTACH*TENT B

o r STUOY AREA •LOCKS * M B t t i . SOUTH TIMBALIER AREA •LOCKS T t i . T t t . t t 4 . t t t B B M . EWING BANK AREA

REGIONAL MAP

SOHIO OCS-G-5644

290

O

P.T.O.-12.000'

TT

O P.T4«-13.500'

P.T^-13.500' T.V.O.

-LEGEN0-

O PR0P0SE0 WELL LOCATIONS LOCATION - E * i 12.000'FNL. 8.875'FEL LOCATION - P - I I0.680TNL. t * W 6 0 m LOCATION T T i lJiOO'FWL. 12.5COTEL BHL LOC TTt 14,335m. 11.720'FEL

PUBLIC INFORMATION A T T A O f t N T c"2

K « U r-tooo-

BLOCK 290

HCLL Lt»TWO V . V I T tMVISCDi

SUPPLEMENTAL

AIR QUALITY REVIEW For

Soutn Timbailer Slock 290 OCS-G-5644

Sohlo Petroleum Company 363 Ambassador Caffery

Lafayette, Louisiana 70508

* * *

Submitted To Cary Ker l in

Regulatory Supervisor

January '0, 1986

* « *

Prepared by: JOHN E. CHANCE a ASSOCIATED INC.

Regulatory and Environmental Division Lafayette, Louisiana Project No. 86-8015

John E. Chance at Assoc., Ino.

ATTACHMENT E

PROJECTED AIR EMISSION SCHEDULE FOR EXPLORATION PROJECT

I . General Infortaat'on

Location of Faci l i ty - South Tiabal ler Block 290 Name of Rlg/Plat fom - Seal-Submersible Owner/Operator - Sohlo Petroleua Coapany Address - 3639 Ambassador Caffery

Lafayette. Louisiana 70608

Contact Person - Cary Ker l in Regulatory Supervisor

Project Start Date - March L, 1986 Project Enc Date - Deceaber 1 , 1986

Total well Footage to be D r i l l ed - 39,000 Distance Offshore - 60.0 miles

I I . Findings of Air Quality Review

As per DOI-MMS regulations th is facH1*y 1s exeapt from fur ther a i r quality review as I t has been determined tnat l^s operation w i l l not have a s ign i f icant adverse environmental impact on a i r qua l i t y .

I I I . Total Emissions at R1g/P1atform

Allowable Projected Emission Emitted Emissions Emissions Status Substance (tons/yr) ( tons/yr) (OK/NG)

CO 0*109.05 22.6 OK

so2 1998.0002 1.7 OK

*>* 1998.0002 141.8 OK

VX 1998.0002 7.3 OK

TSP 1998.0002 .1 OK

John E. Chanco A Assoc., Ino.

IV. Total Supply 4 Crew Boat Emissions at Venice, Louisiana

Emitted Projected Status Substance (s) Emissions (OK/NG 1

CO 16.7 OK

so2 * *

N0X 117.03 OX

VOC 6.3 OK

TSP * *

V. Total Helicopter Emissions at Venice, Louisiana

Emitted Projected Status Substance (s) Emissions (OK/NG)

(tons/yr)

CO 2.2 OK

so2 .07 OK

.2 OK

VOC .2 OK

TSP .1 OK

VI. Transportation Services Oata

Supply Boats (3000 hp) Port - Venice, Louisiana Hal t ing Time - 10 hrs./day Trips Per Week - 5

Crew Boats (2500 hp) Port - Venice, Louisiana Waiting Time - 4 hrs. Trips Per Week - 5

John E. Chance at Ammoo^ Inc.

Hel i'r ou te rs Base - Venice, Louisiana Trips Per Week - 10

Other (Explain) - N/A

•The EPA does not provide SO- arid TSP emission factors for boats

nor does I t provide TSP emission factors for d r i l l i n g .

V I I . Factors Used In Calculations

Emission Factors for Power Generation

Emitted D r i l l i n g Substance(s) ( lb /hp-hr)

CO .0042

S02 .0019

N0X .028

VOC .00095

Eraisson Factors for Helicopters and Boats

Emitted Helicopters Boats Substance ( s i (Ib/englne-LTO) ( lb /ga l )

CO 5.7 .059d

so* .IP

N0X .57 .4196

VOC .52 .0226

TS. .25 *

Other Factors

D r i l l i n g Power Generation - 60 h p - h r / f t Fuel Co--umpt1on by Boats - .0959 gal/KU-hr

John E. Chance & Assoc., inc.

VIII . Methodol ogy

Rig/Platform - horsepower-hour method Boats - horsepower-hour method Helicopters - landing/takeoff ILTO) cycle method

IX. References

D r l l l l n y -EPA-450/3-77-0*6 (June 1977) - "Atmospheric Emissions From Offshore Oil Development and Production", pp. 81-92.

Boats and Helicopters - EPA Report AP-42 - "Compilation of Air Pol lutant Emission Factors", 3rd ed i t i on , (August 1977), pp. 116, 125, 127.

* The EPA does not provide S02 and TSP emission factors for boats

nor does i t provide TSP emission factors for d r i l l i n g .

John E. Chanco at Assoc.. Ino.