OPT J ? 7981

L ies Service Ci l and Gas ation Attention: . R. S. Huttc . . . Box 27570

Houston, Texas 77227

Gentlemen: Reference 1s made to your I n i t i a l Plan of Exploration received October 9, 1984, for Lease OCS-G 6030, Block A-139, Mustang Island Area. This plan Includes the ac t i v i t ies proposed for Wells A through H.

In accordance wi th 30 CFR 250.34, revised December 13, 1979, and our l e t te r dated January 29, 1979, th is plan has been determined to be complete as of October 12, 1984, and 1s now being considered for approval.

Your plan control number is N-1854 and should be referenced in your communica­t ion and correspondence concerning th is plan.

Sincerely yours,

Ultm

D. W. Solanas Regional Supervisor [ £ 7 Rules and Production

bcc: Lease OCS-G 6030 (OPS-2-3) (FILE ROOM) (Of S-2-5 ^ZPjibTJc_lllfO-. Copy of the plan (PUBLIC RECORDS ROOM)

DO-3

ADGobert:gtj :10/10/84 Disk 3a

- \ In Reply Refer To: RP-2-1'

Office of Pro* am Services

OCT 1 5 1984 Records Management

.Section

OCT OH Q84 ,UUi' - "oner*,

Plan of Exploration CITIES SERVICE OIL AND GAS CORPORATION

MUSTANG ISLAND BLOCK A-139 OCS-G-6030

Office of October 4, 1984 Program Strvct*

OCT 1 5 1984

Records Management .Section

W i l l i a m M. Jamieson P.O. Box 27570

Houston. Texas 77227 (713) 850-6218

PLAN OF EXPLORATION CITIES SERVICE OIL AND GAS CORPORATION

MUSTANG ISLAND BLOCK A-139 , OCS-G-6030 1 •

DESCRIPTION OF WORK TO BE PERFORMED

This Plan of Exploration provides for the d r i l l i n g of wells.

COMMENCEMENT DATE

D r i l l i n g i s scheduled to commence October 20, 1984.

TIME TO COMPLETE EACH PHASE

The average time to d r i l l a well is 120 days.

TOTAL TIKE TQ COMPLETE PPQPQSAL

Exploratory operations may last up to 5 years.

SHALLOW HAZARDS REPORT

The geophysical data inspected f o r in te rpre ta t ion to determine shal low hazards and magnetic anomalies consis ted o f :

1 . 1.0 s e c o n d . 100 m i l l i s e c . / t i m i n g sparker data

l i n e s i n g l e t r a c e

2. 3.5 KHZ scaled subbottom p r o f i l e r

3. 150 meter per channel side scan sonar data

4. p r ec i s ion depth recorder

5. magnetometer

A l l d r i l l i n g s i t e s are f r e e and c l e a r of shallow d r i l l i n g hazards w i t h i n 500 f e e t and do not pose any unusual d r i l l i n g problems.

The sha l l ow hazards r epor t f o r *.ais block has been provided t o MMS.

STRUCTURE MAP

A s t r i c t u r e map of the a p p r o p r i a t e sands wi th prospect ive w e l l locat ions i s appended i n p r o p r i e t a r y copies .

!

WELL LOCATIONS

A raap showing surface l o c a t i o n s . TVD ( in^propr ie ta ry copies). arldlBHL ( i n p rop r i e t a ry copies) i s appended.

' A map showing the l o c a t i o n o f the lease block r e l a t i v e to the shore l ine i s appended.

ONSHORE SUPPORT BASE FACILITY

Our Ingleside, Texas shore base w i l l be u t i l i z e d for thi s operation. No expansion or additional h i r i n g w i l l be required.

OIL SPILL CONTINGENCY PLAN

An approved updated copy of C i t i e s Service " O i l S p i l l Con­tingency Plan" i s on f i l e w i t h the MMS i n M e t a i r i e , L o u i s i a n a . The shorebase i n I n g l e s i d e . Texas w i l l be used f o r a base of ope ra t ions i n the event of a s p i l l . O i l s p i l l equ ipmen t i s a v a i l a b l e i n Corpus C h r i s t i . Texas and c o u l d be deployed i n 20 hours.

MUD ADDITIVES

A l i s t of mud addit-.ives i s appended.

Water depth v a r i e s f r o m 290' along the northwestern corner of the b l o c k t o a maximum o f 334' a t the southeas t corner o f the block.

A d e s c r i p t i o n of a j a c k u p d r i l l i n g r i g t y p i c a l of the r i g s which might be used a long w i t h a l i s t o f p o l l u t i o n p r e v e n t i o n equipment i s appended.

AIR EMISSIONS

D r i l l i n g Els^

Allowing an average of 120 days for each well, i t is estimates that a maximum of 3 exploratory wells would be d r i l l e d i n any one calendar >ear. U t i l i z i n g table 4-3 of EPA 450/3-77-026 report e n t i t l e d "Atmospheric Emissions from Offshore O i l and Gas Development and Production" that provides a scenario of a 30-day, 10,000' w e l l , the f o l l o w i n g gaseous emissions would be generated.

D;

Discharge (Metric Tons)

One Well Yearly

31.2

2.8

93.6

8.4

HC 1.2 3.6

CO 4.8 14.4

P a r t i c u l a t e s ? ?

EXEMPTIONS.

The proposed l o c a t i o n i s approximately 47 miles south-southeast f rom the nea re s t s h o r e l i n e . The emiss ion e x e m p t i o n (E) f o r the various p o l l u t a n t s i s as f o l l o w s :

CO E • 3400 ( 4 7 ) 2 / 3 « 44,280 tons/year

VOC E - 33.3 (47) - 1,565 tons/year

Compar ing the e m i s s i o n s f rom the d r i l l i n g r i g w i t h the exemptions, we are w e l l w i t h i n the l i m i t s , so no f u r t h e r analysis i s necessary.

WATER TRANSPORTATION

2000 hp x .75 (load factor) x 38 h r s / t r i p x 12 trips/mo x 2 mos

« 1,368,000 hp/hr.

CjL5M_aflat

1200 hp x .75 ( load f a c t o r ) x 15 h r s / t r i p x 18 t r ips /mo x 2 mos

« 486,000 hp/hr .

DISCHARGE (METRIC TONS/WELL)

12.42

SO 2 .85

HC .42

CO 2.74

Par t i cu la t e s ?

•TION

An average round t r i p t ime f o r «?. hel icopter to the exploratory r i g would be 1 hour . A l l o w i n g 1 t r i p each day , t h e r e w o u l d be 180 hours f l y i n g t ime per w e l l . Nei ther of EPA's AP-42 nor 450/3-77-026 present data on a s ing le engine he l i cop te r i n f l i g h t . The l i m i t e d number of f l i g h t s and short f l y i n g time w i l l undoubtedly r e su l t i n n e g l i g i b l e a d d i t i o n s to o v e r a l l emiss ions f r o m t h i s exploratory program.

ENVIRONMENTAL REPORT

An environmental report i s not r equ i r ed .

CZM CONSISTENCY

CZM consistency i s not r equ i red .

i.EASE STIPULATIONS

Mustang I s l a n d Block A-139 has lease s t i p u l a t i o n s #1 and 13. C i t i e s Se rv ice has compl i ed or w i l l comply w i t h both o f these s t i p u l a t i o n s . No new or unusual technology i s to be used f o r exp lo ra t ion on th i s b lock .

A - 1 3 9

OD.E'

O A . B . C

7 795

6000 OSL /

11,979 M0«4 11,628'TVO 3900

OFFSHORE TEXAS MUSTANG IS. AREA A-139

W E L L L O C A T I O N S SCALE

NON-PROPRIETARY APPENDIX

Well Location map

Lease block location map

Mud additives

D r i l l i n g r i g description

S 7 6 J , A S'O

1 MUD COMPONENT LIST

j

I PRODUCT

B i r i t e B e n t o n i t e Sub B e n t o n i t e L i g n i t e

M o d i f i e d L i g n i t e Hemat i t e Calc ium Cargonate Sodium H y d r o x i d e Sodium C h l o r i d e M o d i f i e d L i g n o s u l f o n a t e Chrome-Free L i g n o s u l f o n a t e Guar Gum Nut S h e l l s M o d i f i e d L i g n i t e B a c t e r i a l l y Produced Polymer Calc ium H y d r o x i d e S e p i o l i t e Sodium Carbonate Sodium B i c a r b o n a t e M o d i f i e d T a n n i n Quebracho Compound Ground Mica Calc ium S u l f a t e A t t a p u l g i t e Sodium Carboxymethy l C e l l u l o s e - R e g u l a r Grade Asbestos F i b e r s Sodium Chromate Sodium Te t r aphospha t e Sodium Canboxy C e l l u l o s e Sodium P o l y c r y l a t e P o l y a n i o n i c C e l l u l o s e Organic Polymer Aluminum S t e a r a t e Non-Hydrocarbon Defoamer Detergent Processed Hydrocarbons N ir.ber 2 D i e s e l Organic Esters

Water Dispersible Asphalts Oil Dispersible Asphalts

Graphite Lubricants

Non-Ionic Emulsifiers

Anionic Surfactants Sodium A l k y l A r y l Sulfonate Alcohol Base Defoamer Floculating Agent Paraformaldehyde

Mineral O i l Emu 1s i f i e r s Viscons i f i ers Orsanophilic Clay Oil Soluble Surfactants

Fatty Acids Sulfonates Asphaltic Materials

I •

€!•* 0.0'

X u d L i f t *

MOBIL DRILLING RIG EQUIPMENT LIST

The fo^ l lowiny i s an equipment, mate: * . i l and personnel 1st

a jackup r i g t y p i c a l of the r i g s tha t might be used:

1 . ^ontinental-Emsco 40' x 147' d e r r i c k with 1,000,000

pound API s t a t i c hook load capacity wi th t r a v e l i n g

b l o c k gu ide and seven (7) 60" sheave c r o w n .

Crown block also includes core l i n e and a i r h o i s t

shelves grooved f o r 9/16" l i n e and c a t l i n e sheave.

2. Co. i t inenta l -Emsco C-3 type 2 drawworks grooved

f o r 1-3/8" d r i l l l i n e , d r iven by three (3) 1,000

hp D.C. motors w i t h V-200 Parmac hydromatic brake,

catheads, sandreel assembly mounted on ths drawworks.

3. Oi lwe l l 37-1/2" rotary driven by 1,00 0 hp D.C. motor.

4. 650 Ton swivel - C.E. L-650.

5. 750 Ton t r a v e l i n g block - C.E. MA-60-6-1-3/8.

6. 500 Ton ro ta ry hook B . J .

7. Dual shale shaker - Rumba Model 102.

8. Two (2) C.E. F-1300 t r i p l e x mud pumps, each d r i v e n

by a 1,300 hp D.C. motor w i t h C.E. PD-5 p u l s a t i o n

dampeners.

9. Three (3) M i s s i o n 6 x 8R c e n t r i f u g a l mud mix and

super charge pumps wi th 75 hp A.C. motors.

10. Three (3) Fai rbanks-Morse 10 c y l i n d e r Model 38DS-1/8

opposed p i s t o n e n g i n e s , each r a t e d 1,600 hp @ 720

rpm d r i v i n g s i x (6) 1,600 KW D.C. generators and three

(3) 1,000 KW a l t e r n a t o r s (one engine i s a u x i l i a r y

engine) .

,1 11 . \ ° f l e ( ! ) Aq.ua-Chem 3 00 g a l l o n per hour ^fresh water

nfaker.

1 2 . .Two (2) L e T o u r n e a u Ser ies PCM-120 AS cranes w i t h

100' booms - ra ted 25 tons at 50' and 40 tons at 26*.

13. 10,000* o f 5" O.D. 19.5# Grade E Range 3 D r i l l p ipe

w i t h 6 -3 /8" O.D. 18° taper t o o l j o i n t s w i t h 5" X-hole

j o i n t s .

1 4 . 5 ,000* o f 5" O.D. 19.5# Grade X-105 Range 3 d r i i l

p i p e w i t h 6 -3 /8" O.D. 18° taper t o o l j o i n t s w i t h 5"

X-hole j o i n t s .

15. Twenty-one (21) 7-3/4" d r i l l c o l l a r s w i t h 6-5/8

regular connections.

16. One (?) 5-1/4" Hex k e l l y .

17. One (1) Varco Model 6500 k e l l y spinner.

18. H a l l i b u r t o n Uni t Moael HT-400 w i t h r e c i r c u l a t i n g mixer

provided H a l l i b u r t o n does service work.

19. Schlumberger u n i t .

20. Pit-O-Graph Uni t and one (1) Flo-sho.

2 1 . Swaco-Degasser.

22. One (1) Pioneer Model T10-4 D e s i l t e r , One (1) Pioneer

Model T16- D e s i l t e r .

23. One (1) Pioneer Model S3-12 Desander.

24. One (1) ad jus tab le stabbing board.

2 5 . One (1) w i r e l i n e measu r ing dev ice w i t h rainimum of

14,000' of 0.092 l i n e .

26. One (1) mud gas separator .

3

T J . One (1) 13-5/8" 5 ,000 ps i W.P. LWS S h a f f e r s i n g l e

blowout p r e v e n t e r . One (1) 13-5/8" 5,000 ps i W.P.

LWS Shaf fer double blowout preventer. One (1) 13-5/8" h .

5,000 psi W.P. GK l y d r i l l , with extra element.

One (1) 20" 3 ,000 p s i W. P. MSP 2 ,000 Hydr i l with

21-1/4" I . D .

Pipe Rams for Contractor's d r i l l pipe.

28. Accumulator unit (150 gallon capacity, 3,000 psi W.P.)

capable of closing a l l blowout preventers and having

a pump which automatically keeps accumulator up to

rated working pressure, with e l e c t r i c master and remote

panel.

29. Regular Baroid mud balance, water loss machine, t i t r a t i o n

equipment and sand content equipment.

30. Crew complement on r i g at a l l times.

(a) One (1) toolpusher

(b) Two (2) f i v e (5) men d r i l l i n g crews (12 hours

per day)

(c) Seven (7) roustabouts (12 hours per day)

(d) Two (2) motormen (12 hours per day)

(e) One (1) welder (12 hours per day)

(f ) Cne (1) r i g mechanic (12 hours per day)

(g) One (1) el e c t r i c i a n (12 hours per day)

(h) Two (2) crane o p e r a t o r / r o u s t a b o u t pusher

combination (12 hours pet day)

( i ) Commissary crew

4

31'. Marine telephone ar 1 FM radio

^2j. C o n t r a c t o r s h a l l f u r n i s h r i g l a b o r at the scheduled

o v e r t i m e ra tes f o r work done f o r O p e r a t o r ' s b e n e f i t

when they are not work ing t h e i r normal working nours

of 6 a.m. to 6 p.m.

33. Casing pro tec tors i n surface pipe s a t i s f a c t o r y

to Operator when Con t r ac to r - fu rn i shed pipe i s i n use.

34. Crew q u a r t e r s and commissary ( i n c l u d i n g q u a r t e r i n g

and f e e d i n g n o t i n excess o f t h r e e (3) O p e r a t o r

p e r s o n n e l ) . A l l O p e r a t o r p e r s o n n e l i n excess of

•:hree (3) an a l l t h i r d par ty personnel w i l l be charged

by ca te re r Lor meals or lodging so f u r n i s h e d .

35. One (1) c i r c u l a t i n g head w i t h 3,000 p s i working capaci ty

w i t h a 5" X-hole p i n and a connection f o r hose.

36. One (1) ins ide blowout preventer to f i t 5" d r i l l p ipe

f u r n i s h e d wi th r i g .

37. S u f f i c i e n t Coast Guard approved l i f e jackets f o r a l l

persons aboard r i g .

38. Pe r sonne l t r a n s f e r net to be used i n conjunc t ion w i t h

cranes.

39. F a c i l i t i e s t o l o a d c a s i n g , m a t e r i a l s and s u p p l i e s

onto or o f f r i g .

40. B i t subs f o r d r i l l c o l l a r s f u r n i s h e d w i t h r i g w i t h

6-5/8" regular connections.

41 . Saver subs fo r 5-1/4" Hex k e l l y .

42. One (1) 13-3/8" 350 ton casing e l e v a t o r w i t h 1 3 - 3 / 8 " ,

9-5/8", 7-5/8", 7", 5-1/?', and 5" i n s e r t s . - -~ •

43. One" (1) 13-3/8" 350 ton casing spider w i t h 13-3/8"

9-5/8", 7-5/8", 7", 5-1/2" anid 5" i n s e r t s .

44. Fishing tools as f o l l o w s :

One (1) taper tap wi t h 6-3/8" O.D. box 4-1/2 IF connec­

t i o n , taper from 2-1/2" to 4-1/2".

OMC 8-7/8" O.D. Overshot w i t h 4-1/2 IF connection.

Basket grapples: 5" and 6-3/8"

S p i r a l grapples: 7-3/4" and 7-5/8"

Controls: 5" an 6-3/8"

45. Lubricants for r i g and machinery.

46. Normal r i g operating supplies.

47. Two (2) 28-man Whittaker C o r p o r a t i o n Bruker S u r v i v a l

systems complete w i t h launch and recovery system and

platform.

48. Capacities:

Fuel 3,000 bbls.

Potable Water 1,000 bbls.

D r i l l Water 7,200 bbls.

Bulk mud 3,120 cu. f t .

Bulk cement 4,160 cu. f t .

Liquid mud 1,200 bbls

Sack storage 130 tons (approximate)

Li v i n g quarters w i t h f a c i l i t i e s 59 men

49. Two (2) - 33C amp r e c t i f i e r welding machines.

50. P a l l T r i n i t y MPT-1250 sewage treatment plant.

6

31. One (1) fork l i f t truck.

52. Three" \3) Philadelphia Model PTERO mud mixers.

53. Choke, manifold ( 5 ,000 ps i ) with remote c o n t r o l l e d

choke.

54. Handling tools for C o n t r a c t o r ' s d r i l l pipe and d r i l l

c o l l a r s .

55. Compressed a i r system (125 psi) with two (2) Ingersol

Rand Model 7 5 a i r compressors.

56. Onboard sanitation treatment f a c i l i t i e s for domestic

wastes.

57. Drip pans under a l l equipment which could be source

of pollution.

58. Blowout p r e v e n t e r s and a s s o c i a t e d equipment of an

adequate pressure rating to contain anticipated pressures.

59. Mud monitoring equipment.

60. Adequate capac i ty for mud, weight material and cement

to meet auy needs that may a r i s e .