Ir* toply Refer To: RP-2-I NOV 41985

Union Oil Con*> of California Attention: Mr. •>. C. Ktb t 500 Fier rive Plata East 4615 Soutruest Freeway Houston, Texas 7/027

Gentleave:

Reference Is arte to your Ini t ial Plan of Exploration received October 21, 1965, for Lease OCS-G 7283, Block 197, High Island Area. This plan Includes the activit ies proposed for Nells A and B.

la accordance with 30 CFR 250.34, revised Debater 13, 1979, and our letter d>ted January 29, 1979, this plan has been determined to be complete as of Novexber 4, 1985, and Is now be1«g considered for approval.

> Your plan control nuflber Is 14-2328 and should be referenced In your cc—unlca-tlon and correspondence conce • | this plan.

Sincerely yours,

(Ong. Sgd.) A. Donald Giroir

Acting Regional Supervisor Rules end Production

bcc: Lease OCS-G 7283 (0PS-3-2) (FILE ROOM) (0PS-3-4 w/Public Info. Copy of the plan (PUBLIC RECORDS ROOM)

MJTolbert:blb:10/23/85 Disk 3A

Union Oil and Oat Division: Gulf Region

Union Oil Company of California 500 Executive Plaza East 4615 Southwest Freeway Houston, Texas 77027 Telephone (713) 621-7600

unien October 15, 1985 ***** a™****" sftvwi

OCT 21 1985

ssnci 3 rJKSUcnow

Minerals Management Service P. O. Box 7966 Metairie, Louisiana 70010

Attention: Nr. D. W. Solanas

RE: Exploratory Plan OCS-G-7 283, Block 197 High Inland Araa Offahore, Taxaa

Gentlemen:

Enclosed in thia package ara seventeen (17) copies of Union Oil Company of California'a Exploratory Plan outlining the propoaed plan for the aubject laaaa in accordunca with 30 CFR 250-34 and letter 08-7 dated January 29, 1979. Five (5) of tha copiea contain proprietary data and ara ao marked. One (1) of the copiea containa the high resolution aurvey data required by NTL No. 83-3 paragraph II-A-5.

I f any additional information ia required, pleaae contact Mr. Tony Stewart at (713) 621-7600, axtanaion 1142.

Sincerely,

UNION OIL COMPANY OP CALIFORNIA

-I*-- L. C. Hebert Diatrict Operatione Manager

LCH/mb

PLAN O: EXPLORATION

CCS-G-728 3, BLOCK 197

HIGH ISLAND AREA, OFFSHORE, TEXAS

Union Oil Company of California proposes to d r i l l two (2) exploratory walla on tha OCS-G-7283, Block 197, High Inland Araa, Offahora, Taxaa. Drilling operations ahould commence in March of 1986 dependant of rig acheduling. Tha walla are designed to teat any and a l l proapectiva aanda which might exiat to a dapth of 12,500' TVD in tha Block (Sea Exhibit No. 1).

Well Data for OCS-G-7283, Block 197 (Exhibit No. 2)

Well No.

A

Depth (TVD)

12,500' SLs BHL l

Location

5000' 750'

FWL a FNL a

3750' 650'

FSL FSL

Time (Daya)

50

12,500* SLs BHL:

5000' 750'

FWL a FWL a

3750' FSL 3650' FSL

50

I f tha exploratory project ia commenced aa planned and the drilling program ia continuoua, thia project ahould be completed i n 10C daya. Whether a l l two (2) walla are drilled w i l l depend upon tha results of tha fir a t wells drilled.

The wells w i l l be drilled utilizing a jack-up rig similar to the one ahown in Exhibit No. 3. The rig wil l be a diesel-electric drilling unit and equipped with pane or sumps to collect grease or other pollutants. Tha liquids will be stored in o i l drums for disposal onahore.

A l l walla drilled for oi l and gaa will be drilled in accordance with 30 CFR 250.34, tha proviaiona of OCS order No. 2 and the stipulations of the oil and gaa lease covering thia block. No garbage, untreated sewage or other aolid waatea ahall be disposed from vessels. A l l aolid combustible wast*, products w i l l be incinerated, taking great care not to endanger tha rig. A l l non-combustible material will be transported to ahore for disposal at our Surfaida f a c i l i t y .

The drilling operatione wil l be serviced from Union's shore base located st Surfside, Texas. The facility has docking f a c i l i t i e s for the aarine equipment that w i l l be used on this lesse. There i a a crane for loading and unloading materials. Union maintains

a small stock of tubular goods on tha pipe rscks. There are slso helicopter pada where personnel and supplies can be loaded to be * flown to and from the rige. The base ie manned 24-hours per day. Goods and services for the offshore operatione are located in the Freeport and Rcuaton araaa and are eaaily transported to this f a c i l i t y by highway and marine transportation (See Exhibit 4).

Union Oil Company of California haa filed an o i l apill contingency plan with the Ninerals Nanagement Service in accordance with OCS Order No. 7. This plan contains the names and telephone numbers of company personnel who will form an emergency response team in the event of an o i l a p i l l . This plan contains procedures for reporting a s p i l l snd for responding to a reported s p i l l . Union Oil Company of California i s a member of Clean Gulf Associates. This association provides for the purchase and maintenance of equipment and materials for use by the members in the clean-up of an o i l s p i l l . Equipment i s presently located at Galveaton and Freeport, Taxes? Cameron, Intracoastal City, Grand Isle and Venice, Louisiana. Some of the equipment available include a shallow water skimmer system with 40-barrel storage cepacity, a fast response open sea and bay system with two (2) 180-barrel tanks used in skimming and storing, a high volume open see skimmer system with 1000-barrel storage capacity. The amount of time required to get to the s p i l l will vary dependent cn the location of company chartered work boats or the a/ailability and location cf work boats for immediate charter. Equipment response time should be within 24 hours of notification.

Exhibit No. 5 ia in compliance with the U.S.G.S. Gulf of Mexico le t t e r 75-8 dated June 1974. This evaluation of bottom drilling hasards was derived from a Multi-sensor Engineering Survey using Sidescan Sonar, Magnometer, and an Acouatic Profiler of Block 197. Based upon presently available geological, geophyeical and archeological information, there are no known shallow d r i l l i n g hazards at the propoeed location of the wells. A copy of the high-resolution survey data from the two lines closest to the propoaed well locatione i s included with one copy of the Plan of Exploration aa per Paragraph II.A.5. of NTL No. 83-3.

Other relevant information and data as required includes the mud component and additive li e t (Exhibit 6) and the Air Quality Statement (Exhibit 7).

r - " M 0 0 ° UNION 1 9 7

OC8-Q-7283

e.ooo ,Nv

TiTJ)^- -V^-.-Oy' PTVO ta.eoo'

1 MX. A A 1

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V - 4 M . M 0 . 0 0 '

EXHIBIT #2

4000'

UNION OIL AND C A S DIVISION UNION OIL CO 0 ' CALirOfttHA TCMAS OrrSHOftf OltTRlCT

HIGH ISLAND BLOCK 197 OFFSHORE, TEXAS PROPOSED LOCATIONS

A l l

1 . LANDRUM IV I D » T « I ' ' l l N O

T.O. ran

• t r

• •

• ••LAN

C L f V A T l O M

DATI

M C * l i « .

rjwtvt. JACK-UP WILING tie

Exhibit 3

PROPOSED OftiCLItfC a PRODUCTION OPCRATlONt

U * i O * Oa C O « » A N T 0 ' C » . " 0 » » « ' A

mm l t . i l (MltT • 0« • A Oy ' O i l C* C*U1 • M * « t * « , V « i « »

-

TYPICAL

OFFSHORE MOBILE DRILLING PLATFORM

INTRODUCTION

The Marathon LeTourneau Cantilevered Substructure Jack-Up ie a triangular shaped hull with three legs snd cylindrical pointed spud cans. The hull ia raised and lowered by electrically driven rack and pinion gears. The platform ia classed by the American Bureau of Shipping as s Self-Elevating Drilling Unit.

PRINCIPLE VESSEL DIMENSIONS:

Bull Length 207 feet Bull Breadth 176 feet Depth of Hull 20 feet Gear Rack Height 24 feet Overall Length of Spud Legs 360 feet Aft Spud Centers 122 feet Centerline of Aft Spuds to Centerline of Bow Spud 120 feet Design Water Depth (Non-Hurricane with 25'

penetration 250 feet Rated Drilling Depth 25,000 feet See Attached Grid for Cantilever Capacitiaa

LIQUID & DRY STORAGE CAPACITIES:

D r i l l Water 3,120 bbla. Fresh Water 982 bbla. Fuel Oil 1,958 bbla. Bulk Mud/Cement (4) 1,925 cu. f t . tanka Liquid Mud 1,200 bbla.

CRANES:

Three Marathon LeTourneau Series PCM-120AS, 45 tons s t 25 feat , boon length 100 feet

QUARTERS:

Air conditioned accomodations for 72 men; two galleys and mars halls; five bed hoapital

ANCHORING SYSTEM:

Windlasses - (4) Marathon LeTourneau Series W-1500TS units with 2500' of 1-1/2" diameter wirerope

Anchors - (4) 10,000 bl. LWT type

HELIPORT:

Sikorsky S-61 capacity or equal

EXHIBIT 3A

TYPICAL EQUIPMENT AND DRILLING INVENTORY

DRAWWORKS:

National 1320-UE Drawworks with sandline drums, emergency rotary drive and a Baylor Model 6032 Eddy Current Brake. Drawworka driven by two D-79 e l e c t r i c motors rated at 2000 hoiating HP.

POWER:

Three EMD 12-645E8 diesel engines. Each engine i s rsted et 1650 continuous HP and drives a 1050 KW 600 volt AC generator.

Five Baylor basic "Thyrig 11" units sre ueed to supply DC power for drilling equipment.

MUD PUMP i :

Two National Model 12P-160 Triplex mud pumpa. Each independently driven by two EMD D-79 e l e c t r i c motors rates at 1600 HP and supercharged by an e l e c t r i c driven 5" x 6" centrifugal pump.

DERRICK, SUBSTRUCTURE AND ACCESSORIES:

Derricks Service 147' high x 30" wide derrick with a s t a t i c hook load capacity of 1,044,000 lbs. with 12" line s strung. One hundred (100) MPH wind load capacity with 160 stands of 4-1/2" OD d r i l l pipe. Nstional type 760-F, 538 ton capacity Crown Block with seven 60" diameter sheaves grooved for 1-3/8" wire l i n e . Adjustable casing stabbing platform.

TRAVELING BLOCK:

National Type 660-H-500 ton traveling block with 6 - 60" diameter sheaves grooved for 1-3/8" wire l i n e .

HOOK:

National Type H-500, 500 ton capacity

SWIVEL:

National Type P-650, 650 ton capacity

ROTARY EQUIPMENT:

National Type C-375 rotary with 37-1/2" table opening independently driven by an EMD D-79 e l e c t r i c motor through a National two speed transmission. Varco drive bushing.

Varco Kelly bushing with wiper assembly.

EXHIBIT 3B

MUD MIXING:

Two 6" x 5" centrifugal mud mixing pumps. Each pump driven by a ^ 100 HP AC e l e c t r i c motor.

MUD SYSTLM:

Three 400 bbl. capacity liquid mud tanks and one 50 bbl. capacity slug tank. A l l active mud tanks equipped with Brandt Model MA-20 mud agitators. One S3-12 Pioneer Desander Unit, three 12" cones. One T16-4 Pioneer Desilter Unit, eixteen 4" cones. One Brandt Model DT Dual Shaker.

DRILL PIPE AND DRILL COLLARS:

9,800 f t . of 4-1/2" O.D. 16.60#/ft. Grade E, Range 2 D r i l l Pipe with 6-1/4" O.D. x 4-1/2" XH T.J.

5,000 f t . of 4-1/2" O.D. 20.00#/ft. Grade G, Range 2 D r i l l Pipe with 6-1/4" O.D. x 4-1/2" XH T.J.

24 - 7" O.D. d r i l l c o l l a r s 30* long 12 - 8" d r i l l collars 30' long 1 - Kelly 5-1/4" HEX by 2-13/16" bore by 40' long with 4-1/2"

I.F. pin 1 (pair) B-J Type DB rotary tongc 3-1/2" to 11-1/4" range 2 - Byron-Jackaon Type GG d r i l l pipe elevatore for 4-1/2" O.D.

d r i l l pipe 1 - Varco DCS-L d r i l l c ollar alips for 8" d r i l l c o l l a r 1 - 4-1/2" - 9-5/8" aafety clamp Varco MP-R 2 - Varco 5" SDXL rotary alips for 4-1/2" d r i l l pipe

BLOWOUT PREVENTERS:

One Cameron 21-1/4" - 2000 psi W.P. type "D": One Cameron 13-5/8" - 5000 pai W.P. type "D"j One Cameron 13-5/8" - 10,000 psi W.P. type "U" single; One Cameron 13-5/8" - 10,000 psi W.P. type "U" double. One 10,000 psi W.P. Choke manifold with two adjustable chokes. Blowout preventers and choke manifold treated for H S service.

Blowout preventer control unit i s s Koomey Model ET25160-3BTM, 3000 psi W.P. accumulator system.

COMMUNICATION EQUIPMENT:

55 channel 25 watt VHF/FM Marine Traneceiver 1 - 350 watt PM Traneceiver 6 - 2 Channel VHF portable radios 1 - 100 wstt FM Transceiver 1 - Inner Communication System with stations strategically

located

SPECIAL EQUIPMENT:

1. Varco PS-12 power s l i p s for 4-1/2" d r i l l pipe 2. Automatic D r i l l e r

EXHIBIT 3C

SPECIAL EQUIPMENT, Cont'd.

3. Mud-Gaii Separator 4. Drilling Recorder 5. Du~l aud linea complete with dual etandpipea and 3" x €0" -

10,000 pa' teat rotary hoses 6. BJ-Hughee cement unit driven by two dual Model 35 DC electric

motors 7. Varco Model 6500 Power Sub 8. Totco pit level and flowline indicator 9. Totco straight hole instrument 0 - 8 10. Totco type "E" NLA 75 weight indicator, DCT-25 tong torque

gsuga, MG50 Pump pressure gsuga, 379-35 Rotary RPM indicator, and 379-31 pump stroke indicators

21. Halliburton heavy duty dieael powered wire line unit with 14,000' of .092" line.

12. OMSCO 6-5/8" 15,000 pai teat upper Kelly valve 13. TIM 10,000 psi test lower Kelly valve 14. Gray inside BOP 15. Drilco E-Z torque hydrsulic csthead 16. Fork l i f t truck for sack aud atorage room 17. Two 400 amp. welding machines and oxygen-acetylene equipment 18. Overshots and Taper taps for contractor furnished d r i l l

string 19. Ons 15,000 psi taat d r i l l pipe ssfety vslve 20. Two Maxim RCF - 7.5 water distillation unite - 15,000 gallons

per day total 21. Baroid 821 Mud taat Kit 22. Air tuggers for use on rig floor and cellar deck ares 23. Ons central air system consisting of two 583 CFM air

compressors, one cold start compressor and one water cooled sfter cooler

24. Diesel angina driven 250 KM emergency AC generstor 25. Baylor Filteron sewage treatment plant 26. Drilco Degasser 27. Spinner-Hawk spinning Wrench 28. 2 - 44 aan Watercraft - Shats covered Life Boats

EXHIBIT 3D

HICH IS. ILK. 1*7 PROSPECT

U f l BAHR* A M *

M * T W J « e « » * M B *

EXHIBIT #1

UNION OIL AND GAS DIVISION UNION OIL CO O f CALIFORNIA - T f I A * 0 P P 9 M O M O l t T N l C l

H I G H I S L A N D B L K 1 9 7 P R O S P E C T

O C S - Q 7 2 8 3 w . D 6 0 '

H IGH I S L A N D AREA O F F S H O R E , T E X A S

VICINITY MAP NrtMMtTBTIM rr I M « r r u mr I MTt

DICK 4 : D j j ^ » |. H. j M 9/fl;5

WATER-BASE LIGNOSULFONATE MUD SYSTEM COMPETITIVE MUD PRODUCTS REVISED 3/17/80

BAROID

Baroid

IMC

Imco Bar

MAGCOBAR MILCHEM

Weighting Material

Magcobar Mil-Bar

DESCRIPTION

Barite (Barium Sulfate)

Aquagel Zeogel

Imco Gel Imco Brinegel

Imco Best

Clays y'Viscosifiers)

Magrogel Salt Gel

Super visbestos

Mil-Gei Salt Water Gel

Wyoming Bentonite Attapulgite clay for

salt water muds. Asbestos Material

Q-Broxin

Carbonox Sodium Chromate

Imco VC-10 Imco Lig Sodium Chromate

Thinners

Spcrsene Tannathin Sodium Chromate

Unical Ligco Sodium Chromate

Ferrochrome Lignosulfonate

Chrome Lignosulfonate Processed Lignite Sodium Chromate

(Chrom Additive for CLS Products)

Cello* Imco-CMC

Fluid Loss Control Agents

Magco-CMC Milchem CMC Sodium Carboxymethyl-cellulose

Lime Caustic Soda

Alkalinity. pH Control Additives

Lime Caustic Soda

Lime Caustic Soda

Lime Caustic Soda

Hydrated Lime Sodium Hydroxide

S.A.P.P.

Bicarbonate of Soda

Imco Phos (SAPP)

Bicarbonate of Soda

Calcium Removers

8.A.P.P.

Bicarbonate of Soda

S.A.P.P.

Bicarbonate of Soda

Sodium Acxd Pyrophosphate

Sodium Bicarbonate

Aluminum Stearate

Aluminum Stearate

Defoamer

Aluminum Aluminum Stearate

Aluminum Stearate

Micatex Wall Nut

Imco Mica Imco Plug

Lost Circulation Materials

Magco Mica Nut Plus

Mil Mica Mil Plug

Mica Flakes (Graded) Ground Walnut Hulls

(Graded)

TRADE NAME

CLS Drispac

COMPANY

.MjSCEfrLAMSOVi PRQPUCTg

Louisiana Mud I filing Specialties, Inc.

DESCRIPTION

Chrome Lignosulfonate - Thinner Polyanlonic Cellulose - Fluid Loss Control

EXHIBIT 6

;

MUD QUANTITIES

On a l l T'nion O il Company of California d r i l l i n g operations from apud-in to protection pipe aetting, a sufficient quantity of bulk weight material s h a l l be kept on location to assure that the entire circulating system density can be increased by 0.5 ppg (minimum * 1500 sacks).

When d r i l l i n g below protection pipe. Union w i l l attempt to maintain a maximum storage on location to assure well control. D r i l l i n g rigs currently employed by Union are li s t e d below with a corresponding bulk weight material storage.

Rig Name Bulk Weight Storage (sacks)

G. A. IV, VI 4000 Blue Water IV 3000 See 15 3000 Marlin 5 3000

Lieted below are the minimum quantities for mud chemicals to be maintained on a l l Union d r i l l i n g locations.

Chemical Quantity (sacks)

Gel 250 Caustic Soda 75 Chrome Lignosulfonate (LLS) 200 Lignite 100

In the event of an emergency, mud euppliea from Surfaide, Texas can be obtained in 8 to 24 hours depending on r i g locations snd availablity of supply boats.

When using Baroid'a Enviromul the minimum quantities of mud chemical to be maintained on location are liated below.

Chemical

Mentor - 28 Invermul - NT E-Z Mul - NT Lime Duratone Geltone Calcium C h l o r i d e D r i l l t r e a t Pet ro tone

Q u a n t i t y (sacks)

100 B a r r e l s 28 (55 G a l . Drums) 28 (55 G a l . Drums) 200 sacks 150 s s c k s 200 s s c k s 300 sacks 30 (5 g s l . cans) 50 eacka

EXHIBIT 6A

AIR QUALITY STATEMENT

The plan of operations f o r the d r i l l i n g of the exploratory wells f o r OCS-G-7283, Block 197, High Island Area i s set out i n the preceding pages.

I t i s expected t o take approximately 100 days t o d r i l l and complete the w e l l . The r i g t o be used t o d r i l l these wells w i l l be a t y p i c a l jack-up r i g . The normal f u e l consumption per day f o r t h i s r i g i s approximately 1800 gallons of d i e s e l . The onshore support base f o r t h i s a c t i v i t y w i l l be Union O i l Company of C a l i f o r n i a shore base located at Surfside, Texas. A l l tr a n s p o r t a t i o n , boats and h e l i c o p t e r s , w i l l be handled from t h i s base.

A i r emission ca l c u l a t i o n s are based on the aforementioned d r i l l i n g timo frame and data from "Compilation of A i r Pollutant Bnission Factors", t h i r d e d i t i o n AP-42, EPA, Tablea 3.3.3-1 and 3.2.1-3. Any a d d i t i o n a l work required w i l l be minimal and r e s u l t i n a i r emissions w e l l below the exemption l e v e l .

EXHIBIT 7

YEAR: 1986 DAYS/YEAR,: 100

PROJECTED AIR EMISSION FOR HIGH ISLAND BLOCK 197

EMISSION SOURCE RUNNING TIME/DAY

TAKEOFFS 6 LANDINGS/DAY

Calculations for 100 Day D r i l l i n g Phase

Dr i l l i n g Rig 24 hrs.

Cargo Boat (In Berth)

Crew Boat (In Berth)

Helicopter

2 hrs.

2 hrs.

Projected Emission

FUEL CONS, GALS./DAY

1800

4

4

100 Day Proj. in •

NOx CO TSP VOC

Sub Total 5778 84420 18360 6030 6750 Pounds

12 188 41 13 15 25% Factor

12 188 41 13 15 Total Pounds

72 228 228 100 208 Total Tons

Emission Rate (Lbs./Day)

5874

1469

EMISSION FACTORS 4/1000 GALS.

S 0 2 NOX CO TSP VOC

31.2 469 102 33.5 37.5

31.2 469 102 33.5 37.5

31.2 469 102 33.5 37.5

.18 .57 .57 .25 .52

Total in Pounds

NOx CO TSP

85024

21256

18670

4668

7343 106280 23338

3.67 53.14 11.67

73.4 1062.8 233.4

VOC

6156 6988

1539 1747

7695 8735

j.85 4.37

76.9 87.4

EXHIBIT 7A Revised 10/85

LEASE/AREA: OCS-G-7283/HIGH ISL. BLOCK: 197 PLATFORM: JACK-UP

EXEMPTION CALCULATIONS

E • 3400 (D 2/3) f o r carbon monoxide

E - 33.3 D for sulfur dioxide, nitrogen total suspended particulates v o l a t i l e organic compounds

oxides, , and

D - 28.8 Statute Miles (152064 f t . )

E - 31949 CO

E - 959 S0 2, NOx, TSP, and VOC

POLLUTANTS

1986 HIGHEST YEAR PROJECTED EMISSIONS

"E" (T/YR.) (T/YR.) EXEMPT

(YES OR NO)

80 ? 959 3.67 YES

NOx 959 53.14 YES

CO 31949 11.67 YES

TSP 959 3.85 YES

VOC 959 4.37 YES

E • The emission exemption amount expressed in tons per year.

D - The distance of the f a c i l i t y from the closest onshore area of a atate expressed in statute miles.

EXHIBIT 7B Revieed 10/85