In Reply k»fer Tc; RP-2-:

Union 011 Company California Attention: Nr. L . r . . Heb^rt SOO Executive Plaia East 4615 Southsr.t Freeway Houston, T«n« 7 7 02/

Gentlemen:

Reference «a<1<- " your In i t ia l Plan Exp'era*Ion received Decenter 5, 19«5, for Lease OCS-G 7285. Mock High Island Area. This plan Includrs the act.1vUl.-s proposed for Metis A, 8, ane C.

in accordance with 30 CFR 2S<'.i4, revise* December 13, l?79, ;nd -cr letter ciated January 29, 1̂ 7sf, thlr olan has been determined tc be ccetplete as of December 19, HB5, and Is now being considered fur approval.

Your plan control number Is H-2362 and w u l d be referenced 1n your c vmaunlca-tior and correspondence concernInq tMs plan.

Sincerity yours.

(Orig. Sgd.) A. Donald Giroir

tetlny Penional Sunenrl sr,r flules and Production

bcc: .Lease XS-G 7?Bf- (OPS-3-2) (FI»F ROOM) (>PS-3-4 w/Publlc Info. Copy of .n? plan (PUBLIC RECORDS ROOM) DO-3 ~

MJTolbert:gcw:12/6/85 DisV 38

Office of Progran, Ssryfces

D E C 2 4 1985

Information Services Section

Union Oil and Gaa Division: Gulf Region

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

uni<§>n November 26, 1985 """" *****

DEC 05 1985

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

Attention: Mr. D. W. Solanas

RE: Exploratory Plan OCS-G-7285, Block 205 High Island Area Offshore, Texas

Gentlemen:

Enclosed i n t h i s package are seventeen (17) copies of Union O i l Company of C a l i f o r n i a ' n Exploratory Plan o u t l i n i n g the proposed plan f o r the subject lease i n accordance with 30 CFR 250-34 and l e t t e r OS-7 dated January 29, 1979. Five (5) of the copies contain proprietary data and are so marked. One (1) of the copies contains the high r e s o l u t i o n survey data required by NTL No. 83-3 paragraph II-A-5.

I f any a d d i t i o n a l information i s required, please contact Nr. Tony Stewart at (713) 621-7600, extension 1142.

Sincerely,

UNION OIL COMPANY OP CALIFORNIA

L. C. Hebert D i s t r i c t Operations Manager

LCH/mb

PLAN OP EXPLORATION

OCS-G-7285, BLOCK 205

HIGH ISLAND AREA, OPPSHORE, TEXAS

Union O i l Company of C a l i f o r n i a proposes t o d r i l l three (3) exploratory wells on the OCS-G-7285. Block 205, Hi..;'. Island Area, Offshore, Texas. D r i l l i n g operations should commence i n March of 1986 dependent r f r i g scheduling. The we. s are designed to t e s t any and a l l prospective sands which might e x i s t t o a depth of 12,500' TVD i n the Block (See Exhibit No. 1 ) .

Well Data f o r OCS-G-7285, Block 205 (See Exhibit No. 2)

Well No. Depth (TVD) Location Time (Days)

A 12,500' SL: BHL:

6150' 4200'

PEL 6 PEL 6

5500' 600'

FNL FNL

80

B 12,500' SL: BHL:

6150' 1150'

PEL & FVL &

5500' 600'

FNL PNL

80

C 12,500' SL: BHL:

6150' 600'

FEL & FEL &

5500' 3000'

FNL FNL

80

I f the exploratory p r o j e c t i s commenced as planned and the d r i l l i n g program i s continuous, t h i s project should * •» completed i n 240 days. Whether a l l three (3) wells are d r i l l e 1 w i l l depend upon the res u l t s of the f i r s t wells d r i l l e d .

The wells w i l l be d r i l l e d u t i l i z i n g a jack-up r i g s i m i l a r t o the one shown i n Exhibit No. 3. The r i g w i l l be a d i e s - i l - e l e c t r i c d r i l l i n g unit and equipped with pans or sumps t o c o l l e c t grease or other p o l l u t a n t s . The l i q u i d s w i l l be stored i n o i l drums f o r disposal onshore.

A l l wells d r i l l e d f o r o i l and gas w i l l be d r i l l e d i n accordance w i t h 30 CFR 250.34, the provisions of OCS order No. 2 and the st i p u l a t i o n s of the o i l and gas lease covering t h i s block. No garbage, untreated sewage or other s o l i d wastes s h a l l be disposed from vessels. A l l s o l i d combustible waste products w i l l be incinerated, taking great care not to endanger the r i g . A l l non-combustible material w i l l be transported to shore f o r disposal at our Surfside f a c i l i t y .

The d r i l l i n g operations w i l l be serviced from Union's shore base located at Sur f t i d e , Texas. The f a c i l i t y has docking f a c i l i t i e s f o r the marine equipment t h a t w i l l be used on t h i s lease. There i s a crane for loading and unloading materials. Union maintains

a small stock of tubular goods on the pipe racks. There are also helicopter pads where personnel and supplies can be loaded to be flown to and from the rigs. The base is manned 24-hours per day.. Goods and services for the offshore operations are located in the Freeport and Houston areas and are easily transported to this f a c i l i t y by highway and marine transportation (See Exhibit 4).

Union Oil Company of California has f i l e d an o i l s p i l l contingency plan with the Minerals Management Service i n accordance with OCS Order No. 7. This plan contains the names and telephone nunbers of company personnel who w i l l form an emergency response team in the event of an o i l s p i l l . This plan contains procedures for reporting a spi.1 and f c r responding to a reported s p i l l . Union Oil Company of Ca ifornia 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 is presently located at Galveston and Freeport, Te.-as; Cameron, Intracoastal City, Grand Isle and Venice, Louis ana. Some of the equipment available include a shallow water skinuner system with 40-barrel storage capacity, a fast response open sea and bay system with two (2) 180-barrel tanks used in skimming and storing, a high volume open sea skimmer system with 1000-barrel storage capacity. The amount of time required to get to the s p i l l w i l l vary dependent on the location of company chartered work boats or the a v a i l a b i l i t y and location of work boats for immediate charter. Equipment response time should be within 24 hours of n o t i f i c a t i o n .

Exhibit No. 5 i s in compliance with the U.S.G.S. Gulf of Mexico letter 75-8 dated June 1974. This evaluation of bottom d r i l l i n g hazards was derived from a Multi-sensor Engineering Survey using Sidescan Sonar, Magnometer, and an Acoustic Profiler of Block 205. Based upon presently available geological, geophysical and archeological information, there are no known shallow d r i l l i n g hazards at tne proposed location of the wells. A copy of the high-resolution survey data from the two lines closest to the proposed well locations i s included with one copy of the Plan of Exploration as per Paragraph II.A.5. of NTL No. 83-3.

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

IT 'A* MML ST •Ufc-p FTVO 18,000' •*,<

rrvo 18.600*

205 UNION OCS-G-7285

8*

5

4*00' v

/ -i / ' prvoSaTSoo'l

- _ - k.

•00 / •

104 Mr

6 . 1 ^ ^ • f f O '

Y-4&3.1*0.00-

Exhibit #2

e**PKIC 9CALC

UNION OIL AND CAS DIVISION UNION OIL co or CAUFOHNI* reiAtorrtMOM DISTINCT

e**PKIC 9CALC

HIGH ISLAND BLOCK 205 OFFSHORE TEXAS PROPOSED LOCATIONS

A.B & C

o tooo1 «000'

£55-

• l « I k t V CO

rvw/u JACK-UP MILLING tie

E x h i b i t #3

PROPOSEO DRILLING ft PRODUCTION OPERATIONS

UNION 0>k C O » M K 0 ' CAk i rOMNIA

f L f V»TIOW

OATC »f, • M I I T c or •

O H i k c t ' • • o t • CuK • ( K t i i t o

A»»»(o i«» O f U * I * « I O i l C» »f Caul • H » M t * « , T t » « i

TYPICAL OFFSHORE MOBILE DI: ILL ING PLATFORM

INTRODUCTION

The Marathon LeTourneau Cantilevered Substructure Jack-Up i s a tr i a n g u l a r shaped h u l l w i th three legs and c y l i n d r i c a l pointed spud cans. The h u l l i s raised and lowered by e l e c t r i c a l l y driven rack and pinion gears. The platform i s classed by the American Bureau of Shipping as a Self-Elevating D r i l l i n g Unit.

PRINCIPLE VESSEL DIMENSIONS:

Hul l Length 207 fe e t B u l l Breadth 176 feet Depth of Hull 20 feet Gear Rack Height 24 feet Overall Length of Spud Legs 360 fe e t A f t Spud Centers 122 feet Centerline of A f t Spuds t o Centerline of Bow I 120 feet Design Water Depth (Non-Hurricane w i t h 25'

penetration 251 fe e t Rated D r i l l i n g Depth 25,000 f e e t See Attached Grid f o r Cantilever Capacities

LIQUID 6 DRY STORAGE CAPACITIES:

D r i l l Water Fresh Water Fuel O i l Bulk Mud/Cement Liquid Mud

3,120 bbls. 982 bbls.

1,958 bbls. (4) 1,925 cu. f t . tanks

1,200 bbls.

CRANES:

Three Marathon LeTourneau Series PCM-120AS, 45 tons at 25 f e e t , boom length 100 feet

QUARTERS:

A i r conditioned accomodations f o r 72 men; two galleys and mess h a l l s ; f i v e bed hos p i t a l ^

ANCHORING SYSTEM:

Windlasses - (4) Marathon LeTourneau Series W-1500TS u n i t s with 2500' of 1-1/2" diameter wirerope

Anchors - (4) 10,000 b l . 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. Drawworks driven by two D-79 e l e c t r i c motors rated at 2000 hoisting HP.

POWER:

Three EMD 12-645E8 diesel engines. Each engine i s rated at 1650 continuous HP and drives a 105C KW 600 volt AC generator.

Pive Baylor basic "Thyrig 11" units are used to supply DC power for d r i l l i n g equipment.

MUD PUMPS:

Two National Model 12P-160 Triplex mud pumps. 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' hign x 30" wide derrick with a s t a t i c hook load capacity of 1,044,000 lbs. with 12" lines strung. One hundred (100) MPH wind load capacity with 180 stands of 4-1/2" OD d r i l l pipe. National 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 w' r assembly.

EXHIBIT 3B

MUD MIXINGl

Two 6" x 5" centrifugal nud mixing pumps. Bach pump driven by • , 100 HP AC e l e c t r i c motor.

MUD SYSTEMt

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 nud agitators. One S3-12 Pioneer Desander Unit, three 12" cones. One T16-4 Pioneer Desilter Unit, sixteen 4" cones. One Brandt Model DT Dual Shaker.

DRILL PIPE AND DRILL COLLARS:

9,800 f t . of 4-1/2" O.D. 16.601/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 llars 30» long 12 - 8" d r i l l c o llars 30' lona 1 - Kelly 5-1/4" HEX by 2-13/i6" bore by 40' long with 4-1/2"

I.P. pin 1 (pair) B-J Type DB rotary tongs 3-1/2" to 11-1/4" range 2 - Byron-Jackson Type GG d r i l l pipe elevators for 4-1/2" O.D.

d r i l l pipe 1 - Varco DCS-L d r i l l collar s l i p s for 8" ' i r i l l c o l l a r 1 - 4-1/2" - 9-5/8" safety clamp Varco MP-R 2 - Varco 5" SDXL rotary s l i p s 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 psi W.P. type "D"; 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 a Koomey Model ET25160-3BTM, 3000 psi W.P. accumulator system.

COMMUNICATION EQUIPMENT:

55 channel 25 watt VHF/FM Marine Transceiver 1 - 350 watt PM Transceiver 6 - 2 Channel VHF portable radios 1 - 100 watt 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-Gas Separator 4. D r i l l i n g Recorder 5. Dual nud l i n e s complete with dual standpipes and 3" x 60" -

10,000 psi t e s t r o t a r y hoses 6. BJ-flughes cement u n i t driven by two dual Model 35 DC e l e c t r i c

motors 7. Varco Model 6500 Power Sub 8. Totco p i t l e v e l and f l o w l i n e i n d i c a t o r 9. Totco s t r a i g h t hole instrument 0 - 8 ro. Totco type "E" WLA 75 weight i n d i c a t o r , DCT-25 tong torque

gauge, MG50 Pump pressure gauge, 379-35 Rotary RPM in d i c a t o r , and 379-31 pump stroke i n d i c a t o r s

11. H a l l i b u r t o n heavy duty d i e s e l powered wire l i n e u n i t with 14,000* of .092" l i n e .

12. OMSCO 6-5/8" 15,000 p s i t e s t upper Kelly valve 13. TIW 10,000 psi t e s t lower K e l l y valve 14. Gray inside BOP 15. D r i l c o E-Z torque hydraulic cathead 16. Pork l i f t truck f o r sack mud storage room 17. Two 400 amp. welding machines and oxygen-acetylene equipment 18. Overshots and Taper taps f o r contractor furnished d r i l l

s t r i n g 19. One 15,000 psi t e s t d r i l l pipe safety valve 20. Two Maxim RCP - 7.5 water d i s t i l l a t i o n u n i t s - 15,000 gallons

per day t o t a l 21. Baroid 821 Mud t e s t K i t 22. A i r tuggers f o r use on r i g f l o o r and c e l l a r deck area 23. One c e n t r a l a i r system consisting of two 583 CFM a i r

compressors, one cold s t a r t compressor and ont water cooled a f t e r cooler

24. Diesel engine driven 250 KW emergency AC generator 25. Baylor F i l t e r o n sewage treatment plant 26. D r i l c o Degasser 27. Spinner-Hawk spinning Wrench 28. 2 - 4 4 man Watercraft - Shatz covered L?fe Boats

EXHIBIT 3D

UNION OIL ANO GAS DIVISION u n i o n OIL CO Of CALIFORNIA - TEXAS 0 * F S M O » C DISTRICT

HIGH ISLAND BLK . 2 0 6 PROSPECT

OC S- G 7 26 5 W.D. 6 2 '

HIGH ISLAND A R E A . O F F S H O R E . T C X A C

VICINITY MAP

MM MU M H I

MATER-BASE LIGNOSULFONATE WU STTEM COMPETITIVE HDD PBODPCTS REVISED 3/12/SO

BAIIOZD IMC

B a r o i d Xaco Bar

MAGCOBAR M1LCBEH

Weighting I t o t a r i a l

Magcot; a r M_l-B.ȣ

DESCRIPTION

B a r i t e (Barium * I f a t e )

Aquagel Zeogel

It.co V . l

Xaco B 4 negel

I»?o Be: t

C l a y 0 l a c o e i f i a r a )

Kagcogel B a i t C a l

S f a r VJsbestoc

Hil-5el Salt Xater Gal

Wyoning Bentonite Attapulgite clay for

• a l t water aud», AsbeBtoa Material

Q-Eroxin

Carbonox Sod lust Chrc i te

Xaco VC-10 Imco L i g Sodiua Chromate

»..' nners

Grtraene Tcr.nathin Sodiua Chroaate

Onical Lig co Sodiua Chroaate

Ferrochrome Ligncaulf onate

Cbrcae Lignosulfonate Processed Lignite Sodiua Chroaate

(Cbroa Additive for CLS Products)

C e l l e x

F l u i d U .» Control Agents

Magco-aiC Milchea CMC Sodiua Carboxymethyl-e e l l u l o n e

Lime C a u s t i c Soda

fc.A.P.P.

B icarbonate Of Soda

L i s * Caustic Soda

Alkalinity, pH Control Additives

Liae Liae Caus.ic Soda Cauntie Soda

' lei urn Removers

Xaco Pbos (6APF!

Bicarbonate of Soda

B . A . P . P .

Bicarbonate c f Soda

S.A.P.P.

Bicarbonate of Soda

Bydrcted Liae Sod! Uli Hydroxide

Sodiua Acid Pyrophosphate

Sodiua Bicarbonate

a l u a i n u * 5 i v -e

Aluainua S t * s r a t e

Defoaaer

Aluainua Steaxat.?

Aluainua Stearate

Aluainua Stearate

Lost Circulation MeterIf _

Micat-«ts Xaco »<lca Magco Mica Ms 1 1><rs Mica Flakes (Graded) Mall But Xaco P.'ug But Plug Mil M n Ground Malnut Bulls

(Graded)

TRADE MAKE

CLS Driapac

COM »AHY

MISCELLABBOUS PBODOCfk

DBSCftXPTiCii

Louisiana Mu 1 Drilling Specialties, Inc.

Chrome L-rnosuifonate - Thinner Polyanic;. c Cellulcee - Pluid Loas Control

BXBXBXT 6

7

MUD yJANTITIES

On a l l Union Oi l Company of California d r i l l i n g operations from spud-in to protection pipe setting, 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 sackr >

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. Drill i n g rigs currently employed by Union are l i s t e d below with a corresponding bulk weight material storage.

Rig Name Bulk Weight Storage (sacks)

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

Listed below are the mii. mum quantities for mud chemicals to be maintained on a l l Union Gr 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 supplies from Surfside, Texas can be obtained in 8 to 24 hours depending on r i g locations and availablity of supply boats.

Wr.en using Baroid' s Enviromul the minimum quar. i t i e s of mud chemical to be maintained on location are list e d below.

Chemical Quantity (sacks)

Mentor - 28 Invermul - WT E-Z Mul - NT Lime Duratone GO tone Calcium Chloride D r i l l treat Petrotone

100 Barrels 28 (55 Gal. Drums) 28 (55 Gal. Drums) 200 sacks 150 sacks 200 sacks 300 sacks 30 (5 gal. cans) 50 sacks

EXHIBIT 6A

AIR QUALITY STATEMENT

The p r , of operations f o r the d r i l l i n g of the exploratory wells f o r *v.S-3-',285, Block 205, High Island Area i s set out i n the precid;ng pages.

T.c i s expec*".*d t o take approximately 240 days t o d r i l l and ccaplete the w e l l . xl.f r i g t o b'. ised t o d r i l l these v e i l s w i l l be a typica. >ok-up r.g. The normal f u e l consumption per day f o r t h i s r i g it? appioximarely 1800 gallons of d i e s e l . TLia onshore support Uase f o r t h i s a c t i v i t y w i l l be Union O i l Cwpany of California s»>ore bcr.e located at Surfside, Texas. A l l transportation, boats ai.i? 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 calculations, art: based on the aforementioned d r i l l i n g time frame and data from "Compilation of A i r Pollutant Emission Factors", t h i r d e d i t i o n AP-42, EPA, Tables 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: 240

PROJECTED AIR EMISSION FOR HIGH ISLAND BLOCK 205

RUNNING TAKEOFFS & FUEL CONS. F.MISSION FACTORS EMISSION SOURCE TIME/DAY LANDINGS/DAY GALS./DAY 4/1000 GALS.

Calculations for 240 Day D r i l l i n g Phase NOx CO TSP VOC

D r i l l i n g Rig 24 hrs. 1800 31.2 469 102 33.5 37.5

Cargo Boat (I n Berth) 2 hrs. 4 31.2 469 102 33.5 37.5

Crew Boat (I n Berth) 2 hrs. 4 31.2 469 102 33.5 37.5

Helicopter 4 .18 .57 .57 .25 .52

Projected Emission 240 Day Proj . i n # Total i n Pounds

S0 2 NOx CO TSP VOC so2 NOx CO TSP VOC

13478 202608 44064 14472 16200 Sub Total Pounds 13711 204056 44807 14776 16771

30 451 98 32 36 25% Factor 3428 51014 11202 3694 4193

30 451

173 547

98 32

547 240

36

499

Total Pounds

Total Tons

17139

8.57

255071

127.54

56009

28.01

18470

9.24

20964

10.48

Emission Rate (Lbs./Day) 71.4 1062.8 233.4 76.9 87.4

EXHIBIT 7A Revised i n / l r ,

LEASE/AREA: OCS-G-7285/HIGH ISLAND BLOCK: 205 PLATFORM: JACKUP

EXEMPTION CALCULATIONS

E - 3400 ( D 2 / 3 )

E « 33.3 D

for carbon monoxide

for sulfur dioxide, nitrogen oxides, t o t a l suspended p a r t i c u l a t e s , and v o l a t i l e organic compounds

D - 28.8 Statute Miles (152,064 f t . )

E - 31949 CO

E • 959 S0 2, NOx, TSP, and VOC

POLLUTANTS "E" (T/YR.)

1986 HIGHEST YEAR PROJECTED EMISSIONS

(T/YR.) EXEMPT

(YES OR NO)

S 02 959 8.57 YES

NOx 959 127.54 YES

CO 31949 28.01 YES

TSP 959 9.24 YES

VOC 959 10.48 YES

E - The emission exemption amount expressed i n tons per year.

D = The distance of the f a c i l i t y trom the closest onshore area of a state expressed i n s t a t u t e miles.

EXHIBIT 7B Revised 10/85