In Reply Kefor To: 8P-2-1 JUL 1 -.365

Sun txp l »ret1-ei and Production Coapany A t ten t ion : Mr. Alfred B. Inrwood Posv Off ice fio* 1101 Houston, Te*as 77?r>I

Gentlearn:

Referenc- is aale to your I n i t i a l Plan of Exploration received Junf 17, 19o5, for U a « fC3-u 6217, Blocic A-411, High I fiend Area, Tl i i* pier tncluocs tho a c t i v i t i e s proposed tor M t l l l A through L.

In accordance with 30 CFR 250.34, revl see' Decwfctr 13, 1*79, amt ,>ur le t te r dated January 29, 1979, th is plan has b*.:n date rained to hp cnanlet* at of July 1 , 1985, aed 1s now ***im considered for approval.

Your plan control nuaber is r.-217u and should be rfferencud in y Kir ctxTCunt ca­t i on and correspondence conccmi:«p th is plan.

Sincerely your>,

ieRiG.saD >n*LPHj MCUNCON

0. U. Solanas Peotonal Supervisor •ui. s «nd productlen

bcc: Least XS-G 6217 (OPS-3-2) (FILE ROOM) lOPS-3-4 u/Pubttc In fo . Copy of the plan (PUBLIC PLXORDS ROOM)

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Sun Product ion Operat ion* Div is ion OH .!•.».-Disliu I

" £ 3 Sun E»plormion and Product ion Company i.'i. ' i MMdu.niaatM Lam* I'O H o . 1*4)1

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Jur.e 5. 1985

Mr. 0. U. Solanas Regional Supervisor Rules and Production Minerals Management Service P. 0. Box 7944 Metairie, Louisiana 70010

Gentlemen:

Sun Exploration and Production Company hereby submits a Plan of Ex­ploration for the subject lease In accordance with the provisions of 30 CFR 250.34 for your approval.

Nine copies of th is plan are enclosed, f i ve proprietary and four for public informalion.

Re: Plan of Exploration High Island, South Addition Block A-411, 0CS-G-6217

Sincerely,

ABN:rpb

Enclosures

t

Progra Sarvicaj

JUL 5 1905

Records Management .Section

PLAN OF EXPLORATION

OCS G 6217

HIGH ISLAND, SOUTH ADDITION BLOCK A-411

SUN EXPLORATION AND PRODUCTION COMPANY

May 31, 1985

Contact:

A. B. Norwood Sun Exploration and Production Company

P. 0. Box 1501 Houston, Texas 77251-1501

(713) 531-2158

TABLE OF CONTENTS

Description of Work

Shallow Hazards Statements

Area Location Maps

Base Support Faci l i ty Data

Vicinity Map

Environmental Safeguards

List of Mud Additives

Description of D r i l l i n g Rig

Air Quality Computations

Geological and Geophysical Data

Shallow Hazard Survey Report

SUN EXPLORATION AND PRODUCTION COMPANY PLAN OF EXPLORATION

High Island South Addition Block A-411

This Exploration Plan for High Is land, South Addition Block A-411 has been prepared 1n accordance wi th 30 CFR 250.34-1, Gulf of Mexico OCS Orders and Notice to Lessees No. 83-3.

This Block was leased in 1983. Geophysical a c t i v i t i e s have been conducted and the f i r s t exploratory well could begin as early as January 1 , 1986 subject to the a v a i l a b i l i t y of a d r i l l i n g r i g , approval of th is Explorat ion Plan, approval of an EPA NPDES permit and the required permit to d r i l l .

This p lan calls for d r i l l i n g up to f ive exploratory wells to provide an e a r l y determination of the presence of hydrocarbons on this t rac t . The w e l l s w i l l be dr i l led to depths up to 10,000'.

The f i r s t well could be spudded approximately January 1 , 1986. Dr i l l i ng of add i t i ona l wells w i l l be scheduled based on resul ts of previously d r i l l e d wel ls . Well locat ion data and d r i l l i n g time for each well 1s located with the geological Information.

The t en ta t i ve surface locations of the f ive wel ls to be dr i l l ed are:

WELL SURFACE LOCATION

A 4500' FWL 6600' FNL B 4500' FEL 7400' FNL C 2400' FEL 3600' FNL D 4300' FEL 2000' FNL E 7800' FWL 4000* FNL

Three copies of the Shallow Hazards Survey Report are Included with t h i s plan of exploration.

The attached Shallow Hazards Reports Indicate that the proposed surface locat ions are free of surface fau l ts , seafloor anomalies, or gas accumulations.

Subject SHALLOW GEOHAZARDS AT THE PROPOSED WELLSITES ON HIGH ISLAND AREA SOUTH ADDITION, BLOCK A-411. OCS-G-6217

In terof f ice Correspondence

Date Apri l 9 , 1985

Locat ion Gulf of Mexico and East Coast D i s t r i c t

From P. E. Chaney, J r .

To A. B. Norwood

A high resolution mult i-sensor survey was conducted over the ent ire Block during July 1984. The survey disclosed a smooth seafloor with no Indicat ions of surface fau l t i ng or shallow gas accumulation at any of the following locations:

Location Coordinates

A 4500* FWL ft

8 4500' FEL ft

C 2400' FEL ft

D 4300' FEL ft

E 7800' FWL ft

6600' FNL, Block A-411

7400' FNL, Block A-411

3600' FSL, Block A-411

2000 'FSL, Block A-411

4000' FSL, Block A-411

The multi-sensor data were examined by Mr. Robert J. Floyd for sites of archeological interest and no specif ic human habitation si tes were ev ident from the data.

Preston E. Chaney, J r . Manager of Geophysics Gul f of Mexico and East Coast D is t r ic t

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Sun Exploration & Production Co. OCS-G-6217

High Island Blk. A-411 Plan of Exploration

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ENVI RONMENTAL - SAF EGUARDS

Sun Exploration and Production Company (Sun) w i l l adhere to a l l applicable environmental standards of the EPA, MMS and U.S. Coast Guard. Sun 1s a member of Clean Gulf Associates (CGA) and w i l l u t i l i ze the i r equipment and the manpower and expertise of Peterson Maritime Services, Inc. as well as other specia l is ts 1n pol lut ion control and clean up as needed.

Existing o i l s p i l l cleanup equipment wi th beach protection and bird cleaning station are a l l within a few hours ca l l in the event of a s p i l l . This equipment Is maintained on standby and in a ready state at CGA locations at Grand I s l e , Louisiana; Houma, Louisiana; Intra Coastal Ci ty , Louisiana; Cameron, Louisiana; Galveston, Texas and Rockport, Texas.

The average response times (Including load-out and t ravel) for the major pieces of o i l s p i l l containment and clean-up equipment available ( i . e . . Fast Response Skimmer Systems I and I I , Containment Boom, Radio System, Saucer Type Skimmers, Boat Spray System, e tc . ) are projected as follows:

The response times for larger equipment (High Volume, Open Sea Skimmer System - Hoss Barge) and/or smaller equipment w i l l vary considerably according to the point of o r ig in , type of transportation, weather condi­t ions, etc.

A copy of Sun's Oi l Spi l l Alert Procedure for the Gulf of Mexico 1s on f i l e with the U.S. MMS off ices in the Gulf of Mexico area. Sun Intends to u t i l i ze Peterson Maritime Services, Inc. for cleanup operations should an o i l sp i l l occur.

Sun wi l l not dispose of well f l u ids containing free o i l into the Gulf of Mexico. Any f l u i d containing free o i l w i l l be brought to shore for oroper disposal. A l l solid wastes w i l l be disposed of as per OCS Order No. 7. Sun's personnel w i l l be Instructed in the techniques of equipment maintenance and operation relat ive to pol lut ion prevention, and pol lut ion inspections w i l l be performed as per OCS Order No.7.

Sun's base of operations in case of ar o i l sp i l l 1s the emergency response center 1n our o f f i ces at Houston, Tex. s. Field personnel w i l l be dispatched from our base support f a c i l i t y at Sabine PdSS, Texas.

Location Hours

Cameron, Louisiana Intra-Coastal City, Louisiana Galveston, Texas Houma, Louisiana Grand Is l - , Louisiana Venice, Louisiana Rockport, Texa.

14 14 17 18 21 24 29

OTHER DATA AND INFORMATION

The onshore support base for these proposed development operations w i l l be Sun's ex is t ing offshore embarkation terminal at Sabine Pass, Texas. This present (since 1973) oifshore support terminal encompasses a tota l area of 4.25 acres and Includes an of f ice building with small Inside storage area; pipe and equipment storage yard, i . dock, bulk mud storage, diesel fuel storage, and bulk cement ste.a** and a large warehouse.

Travel routes for boats w i l l be from Sabine Pass, Texas to the Sea Buoy (18 ni les) then d i rec t ly to High Island, South Addition Block A-411 surface locat ion .

Helicopters w i l l use the most d i rec t route feasible. Boat and helicopter t r ips to High Island, South Addition Block A-411 w i l l pro­bably occur on an average of three t r i ps per week to transport personnel and/or supplies.

AIR QUALITY CALCULATIONS

An Air Quality Calculations report Is attached. The results of th is report show that the amount of emissions expected for th is ac t i v i t y are below the exemption amount and that further review 1s not required i n accordance with 30 CFR 250.57- 1(d).

DESCRIPTION

DRILLING MUD MATERIALS

TRADE NAMES BAROID IMCO MAGCO BAR MILCHEM

Barn id Imco Bar Magco Bar Mi l -Bar Nu-Dense Dens1m1x Mil-Dense

Bar-Gain Aquagel Imco Gel Magcogel Mi l -Ge l Zenogel Rr inegel Sa l t Gel Sa l t Water Gel XC Polymer XC Polymer XC Polymer XC Polymer Cel lex Imco CMC Magco CMC CMC PAC-R Drispac Poly-Pac Drispac Impermex Imco Loid My-Lo-Jel M i l s tarch Dextr id Permalold Permastarch Perma-Lose Carbonox Imco L l g Tannathin Ligco CC-16 Imco Thin Caus t i -L ig Llgcon Durenex Poly-RX Resinex Chemtrol-X K-L i g

Poly-RX XKB-LIG

Q-Broxin VC-10 Spersene Uni-Cal QB-II RD-2000 Magco CF: Uni-Cal S.E.A. Con Det Imco MD D-D Mi l chem DO Barv is Saf -V is X Ce l los l ze W0-21 Micatex Imco Myca Magco Myca Mllmica Wall nut Imco Plug Nut Plug Mi l Plug

B a r i t e Hemat i te I l m e n l t e Ben ton i t e A t t a p u l g i t e Organic Polymer Sodium Carboxymethyl Ce l l u l ose Poly An ion ic Cel lulose Pre-Gelat1n1zed Starch Non-Fermenting Oranic Polymer L i g n i t e Caus t i c i zed L ign i te Polymer/Resin Blend Potassium L ign i te Chrome Lignosul fonate Chrome-Free L ignosul fonate Detergent Hydroxyeth ly Cel lu lose Ground Mica Walnut She l ls

SPECIALTY MUD PRODUCTS

DESCRIPTION TRADE NAME MANUFACTURER

Minera l O i l w/Sur factant M inera l O i l w/G1lson1te ft Su r f ac tan t s Dlatomaceous Earth M o d i f i e d Tannin P o l y v i n y l Acetate-Mael 1c Anhydr ide Co-Polymer Blended Lost C i r c u l a t i o n Ma te r i a l C e l l u l o s e Fiber Sodium Polyaery la te

B i tw ise r

D iespha l t /Spot ty Diacel M Desco

Ben-Ex Kwik-Seal Ven-Fyber 201 WL-100

COMMERCIAL CHEMICALS

Major Chemical Co.

Major Chemical Co. D r i l l i n g Spec ia l t i es Co. D r i l l i n g Spec ia l t i e s Co.

Rotary D r i l l i n g Services Rotary D r i l l i n g Services Venture Chemical Co. Kel co Rotary

Sodium Chromate Sodium Hydroxide (Caustic soda) Sodium Carbonate (Soda ash) Sodium Bicarbonate Calcium Hydroxide (Lime) Sodium Chlor ide ( S a l t ) Potassium Chlor ide Calcium Ch lo r ide Aluminum Stearate Graphite

EXPLORATION PLAN

EXPLORATORY DRILLING RIG with

SAFETY AND POLLUTION-PREVENT UN EQUIPMENT

A jackup d r i l l i n g r i g , such as the Rowan-Fort Worth w i l l be used to conduct exploratory d r i l l i ng on our shallow water OCS leases. Attached Is a schematic of this r ig wi th a drawing of the surface diverter system for r i g safety In accordance wi th OCS Order No. 2. A 11st follows of the r i g ' s blowout preventer system for safety and pol lu t ion prevention as requ i red by OCS Orders 2 and 7.

1 27 1/2" Regan type KFDJ-2OO0 Diverter System, 2000 psi WP.

1 13 5/8" Shaffer annular, 500 psi WP.

1 13 5/8" Cameron Type U, 10,000 psi WP; 2 pipe rams and one b l ind ram; BOP's actuated w/one 280 ga l , 3000 psl accumulator w/tontrol console at d r i l l e r ' s stat ion and

one remote located.

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AIR QUALITY INFORMATION

Information required by 30 CFR 250.57-1 Is Included for the f a c i l i t y described In this Plan of Exploration.

The calculations made under the provisions of 30 CFR 2b0.57-l(d) ind ica te that the f a c i l i t y Is exempt from fur ther qual i ty review. The information and calculations are attained.

AIR QUALITY CALCULATIONS FOR DRILLING OPERATIONS

HIGH ISLAND SOUTH ADDITION BLOCK A-411

Using Rowan #021 as a typical jack-up rig. 4 Cat. D-399T engines rated at 1440 BHP. Assume dr i l l ing operations 365 days/yr.

Fuel Consumption: A. Drilling Operations:

0.39#/BHP/hr. 0.39 x 1440 • 561.61/hr. X oaj • 79 gal/hr.

4 x 79 » 24 - 7584 gal/day

B. Transportation:

1250 gal /day for work boats and helicopters

C. Total fuel use • 8834 gal/day

Projected Emissions • Particulates (TSP) 8834 gaj[ x (365 days) x (*33.6 lbs (ton)

day 1000 gaT~?0WTbs • 54 tons

y .

Sulphur Oxides (SOx): 8834 x 365 x *31.2 x 1 • 50.3 tons

"ITO 2TO yr.

Nitrous Oxides (NOx): 8834 x 365 x M69 x 1 • 756 tons

TOT TDUO yr.

Hydrocarbons (HC): 8834 x 365 x «37.S x 1 - 60.46 tons

"TOT ITO ~yrT

Carbon Monoxide (CO): 8834 x 365 x * 10? x 1 - 164.44 tons

TOT OTO" ~yr7

•A i r emission factors obtained from EPA AP-42 Appendix C, Supplement No. 9

Block HI A-411 1s 65 miles from Pt. "Oster". (nearest land).

SUMMARY OF EXEMPTION CALCULATION INFORMATION

Projected Emissions Po l lu tant Formula O(mlles) *E"(T/yr) Em1ss1ons(T/yr) E

TSP E-33.3D 65 2164 54.01 Yes

so2 E-33.30 65 2164 50.3 Yes

1*33.30 65 2164 756 Yes

MC E-33.3D 65 2164 60.46 Yes

CO E-3400D 2/3 65 54,965 164.44 Yes

Sun txplorat ion and Production Company, as Operator, believes this Information submitted separately from Exploration Plan for OCS 6 6217 High Is land, South Addition Block A-411 to be exempt from disclosure. Sun requests that the data and information enclosed herewith be dispersed for use only by the United States Government.

Geological Information provided Includes:

1 . Well location p la t .

2 . Structural maps.

3. Cross section.

4 . Tentative Dr i l l i ng Schedule