In Reply J e t e r To: RP-2-1' OCT 1 2 1984

Cit. Service 1 end &as Corporetion Attend j * : Nr. R. S. Hut ton, J r . Post Office Bex 27870 Houston, Texts 77227

Beetle***:

Reference I t steee to vour Init io! Pltn of Exploration recti ved October 9, 1984, for leese OCS-6 0X136, Block 607, Mategorda Island Arte. This plan Ixcltdes the actlvwitt proposed fer Wells A through J .

In accordance with 30 CPR 2S0.34. r\ .ted Dtcteaer 13, 1979, tnd otr letter dated January 29, 1979, thit pltn Has teet tetereined i t be ceeaplete ts of Oc Otter 12, 1994, ted I t now being considered fer approval.

Tour plot control noxottr 1s N-18S5 tnd should he referenced in veer ceetuuulca-tlon tnd correspondence concerning this pltn.

Sincerely yours.

(Ong. Sgd.) D.W. Solanas

0. M. Soltnas Regional Supervisor Rules tnd Productitn

bcc: .Lease XS-6 6038 (OPS-2-3) ( F I U ROOM) CnPS-?-$ g/Public Info. Copy of the pltn (PUBLIC RECORDS ROOM)

DO-3

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

Program l t r * *

OCT \ q«^d*Wanagen^

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* * * * * * ttAMGCMCWT M M *

OCT 0 ^ 084

«UUS ANU PROOUCTION

Plan of Exploration CITIES SERVICE OIL ANU GAS CORPORATION

A ISLAND BLOCK 6

October 4, 1984

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

Houston, Texas 77227 (713) 850-6218

PLAN OF EXPLORATION CITIES SERVICE OIL AND GAS CORPORATION

MATAGORDA ISLAND BLOCK 607 • OCS-G-6038

DESCRIPTION OF WORK TO BE PERFORMED

This Plan of" Exploration provides for the drilling of ten v e i i s .

COMMENCEMENT DATE

Drilling is scheduled to commence October 20, 1984.

TIME TJ COMPLETE EACH PHASE

The average time to d r i l l a well is 60 days.

TOTAL TIME TO COMPLETE PROPOSAL

Exploratory operations may last up to 5 years.

SHALLOW HAZARDS REPORT

The geophysical data inspected for interpretation to determine shallow hazards and magnetic anomalies consisted of;

1. 1.0 second, 100 m i l l i s e c . / t i m i n g l i n e s i n g l e trace sparker data

2. 3.5 KHZ scaled subbottom prof i l er

3. 150 meter per channel side scan sonar data

4. precis ion depth recorder

5. magnetometer

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

The shal low hazards report for this block has been provided to MMS.

STRUCTURE MAP

A s t r u c t u r e map of the appropriate sands with prospective well locations i s appended in proprietary copies.

WELL LOCATTONfi

A map showing surface locations, TVD (in proprietary copies), BHL (in - proprietary copies) is appended."

A map showing the location of the lease block re lat ive to the shoreline is appended.

ONSHORE SUPPORT BASE FACILITY

Our Ingleside, Texas shore base w i l l be util ized for this operation. No expansion or additional hiring wi l l be required.

QIL SPILL CONTINGENCY PLAM

An approved updated copy of Cities Service "Oil Spi l l Con­tingency Plan" is on f i l e with the MMS in Metairie, Louisiana. The shorebase in Ingleside, Texas w i l l be used for a base of operations in the event of a s p i l l . O i l s p i l l equipment i s ava i lab le in Corpus C h r i s t i , Texas and could be deployed in 20 hours.

MUD ADDITIVES

A l i s t of mud additives is appended.

Water depth varies from 93* along the northwestern corner of the block to a maximum of 110' at th? southeast corner of the block.

DRILLING RIG

A description of a jackup dri l l ing rig typical of the rigs which might be used along with a l i s t of pollution prevention equipment i s appended.

AIR EMISSIONS

Drilling Bias Allowing an average of 60 days for each well, i t is estimated

that a maximum of 3 exploratory wells would be d r i l l e d in any one calendar year. U t i l i z i n g table 4-3 of EPA 450/3-77-026 report ent i t l ed "Atmospheric Emissions from Offshore Oi l and Gas Development and Production" that provides a scenario of a 30-day, 10,000' wel l , the following gaseous emissions would be generated.

Discharge (Metric Tons)

One Well Yearly

ml 15.6 46.8

so 1.4 4.2

HC .6 1.8

CO 2.4 7.2

Particulates ? ?

EXEMPTIONS

The proposed location i s approximately 47 miles south-southeast from the neares t s h o r e l i n e . The emission exemption (E) for the various pollutants i s as follows:

CO E - 3400 ( 2 4 ) 2 / 3 » 28,289 tons/year

NOx

S 0 2

VOC E - 33.3 (24) - 799 tons/year

Comparing the emiss ions from the d r i l l i n g r i g with the exemptions, we are well within the l i m i t s , so no further analysis i s necessary.

HATER TRANSPORTATION

Work Boat 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.

flrew ftoafr

1200 hp x .75 (load factor) x 15 hrs/trip x 18 trips/mo x 2 mos

«= 486,000 hp/hr.

DISCHARGE (METRIC TONS/WELL)

I 12.42

.85

HC .42

CO 2.74

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

AJR_TBMSPQBT&XXQN

An average round t r i p time f o r a 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 . Neither of EPA's AP-42 nor 450/3-77-026 present data on a s ingle 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 resu 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 emissions f rom t h i s exploratory program.

ENVIRONMENTAL REPQRI

An environmental repor t i s not r equ i r ed .

CZM consis tency i s not requ i red .

LEASE STIPULATIONS.

Matagorda I s l and Block 607 has lease s t i p u l a t i o n #1 . C i t i e s Service has compl ied or w i l l comply w i t h t h i s s t i p u l a t i o n . No new or unusua l t echno logy i s to be used f o r exp lo ra t i on on t h i s block.

>

NON-PROPRIETARY APPENDIX

Well Location raap

Lease block location map

Nud additives

Drilling rig description

. I • MUD COMPONENT LIST

PRODUCT

l a r i t e Jentoni te Sub Bentoni te K >

•Ligi* i t e M o d i i i c d L i g n i t e Hematite Calcium Cargonate Sodium Hydroxide Sodium Chloride M o d i f i e d Lignosulfonate Chrome-Free Lignosulfonate 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 Calcium Hydroxide S e p i o l i t e Sodium Carbonate Sodium Bicarbonate M o d i f i e d Tannin Quebracho Compound Ground Mica Calcium Su l fa t e A t t a p u l g i t e Sodium Carboxymethyl Cellulose-Regular Grade Asbestos Fibers Sodium Chromate Sodium Tetraphosphate Sodium Canboxy Cel lulose Sodium Polycry la te Polyanionic Cellulose Organic Polymer Aluminum Stearate Non-Hydrocarbon Defoamer Detergent

Processed Hydrocarbons Number 2 Diesel Organic Esters Water Dispers ib le Asphalts Oi l D i spe r s ib l e Asphalts Graphi te Lubricants

Non-^onic E m u l s i f i e r s Anionic Surfac tants Sodium A l k y l A r y l Sulfonate Alcohol Base Defoamer F l o c u l a t i i i g Agent Paraformaldehyde Mineral O i l Emulsifiers Visconsif i e r s Organophilic Clay O i l Soluble Surfactants Fatty Acids Sulfonates Asphaltic Materials

El«« 0.0' I

MOBIL DRILLING RIG EQUIPMENT LIST

The f o l l o w i n g i s an equipment, ruater ial and personnel l i s t

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

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

pound API s t a t i c hook load capaci ty w i th t r a v e l i n g

b l o c k g u i d e and seven (7) 60" sheave c r o w n .

Crown b lock a lso includes core l i n e and a i r h o i s t

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

2. Cont inen ta 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 i v e n by three (3) 1,000

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

catheads, sandrael assembly mounted on the drawworks.

3. O i l w e l l 37-1/2" rotary driven by 1,000 hp D.C. motor.

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

5. 7 50 Ton t r a v e l i n g block - C.E. MA-60-6-1-3/8.

6. 500 Ton ro t a 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) Fa i 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 ed 1,600 hp @ 720

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

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

eng ine ) .

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11. One (1) Aqua-Chem 300 g a l l o n per hour, f r e s h water

H ker. - *

12. Two (2) Le K # Tourneau S e r i e s PCM-12Q AS cranes with

100 1 booms - rated 25 tons at 50 1 and 40 tons at 26'.

13. 10,000' of 5" O.D. 19.5# Grade E Range 3 D r i l l pipe

with 6-3/8" O.D. 18° taper tool joints with 5" X-hole

j o i n t s .

14. 5 ,000 r of 5" O.D. 19.5# Grade X-105 Range 3 d r i l l

pipe with 6-3/8" O.D. 38° taper tool j o i n t s with 5"

X-hole jo ints .

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

regular connections.

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

17. One (1) Varco Model 6500 kel ly spinner.

18. Halliburton Unit Model HT-400 with r e c i r c u l a t i n g mixer

provided Halliburton does service work.

19. Schlumberger un i t .

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

21. Swaco-Degaeser.

22. One (1) Pioneer Model T10-4 Des i l t er , One (1) Pioneer

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

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

24. One (1) adjustable stabbing board.

25. One (1) w i r e l i n e measuring device with minimum of

14,000' of 0.092 l i n e .

26. One (1) mud gas separator.

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

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

LWS Shaffer double blowout preventer. One (1) 13-5/8"

5,0C0 psi W.P. GK H 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 c l o s i n g a l l blowout preventers and having

a pump which automat ica l ly 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 itration

equipment and sand content equipment.

30. Crew complement on r ig 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 ) One (1) r i g mechanic (12 hours per day)

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

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

combination (12 hours per day)

( i ) Commissary crew

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31. Marine telephone and FM radio

3fc. 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 mm

when they are no t work ing t h e i r normal working hours

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

J3. 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 o f

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

by ca te re r fo r 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 t o 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. Personnel t r a n s f e r net to be used i n con junc 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 2 - 3 / 8 " ,

5

i 9-5/8", 7-5/8", 7", 5-1/2", and 5" inserts.

43. | I One ( l f l 3 * 3 / 8 " 350 ten casing spider w i t h 13-3/8"

' 9-5/8", 7-5/8", 7", 5-1/2" and 5" inserts. mm I

44. Fishing tools as follows:

One (1) taper tap with 6-3/8" O.D. box 4-1/2 I F connec­

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

OMC 8-7/8" O.D. Overshot with 4-1/2 I F connection.

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

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

Controls: 5" and 6-3/8"

45. Lubricants for r i g and machinery.

46. Normal rig operating supplies.

47. Two (2) 28-man Whittaker Corporation Bruker S u r v i v a l

systems complete with launch and recovery system and

p la t forn .

48. Capacit ies:

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)

Living quarters with f a c i l i t i e s 59 men

49. Two (2) - 330 amp r e c t i f i e r welding machines.

50. Pall T r i n i t y MPT-1250 sewage treatment plant.

51. : One (1) fork l i f t truck.

52. j I Three (3f-Philadelphia Model PTERO mud mixers.

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

choke.

54. Handling tools for Contrac tor ' s d r i l l pipe ar.d 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 75 a i r compressors.

56. Onboard sanitat ion 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 pol lut ion.

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 any needs that may a r i s e .