In Reply Refer To: HP-r-1

TXP Operating Cu.ip«itv Attentive.- Mr, John Rosata. Or. Post Off:... rtu* 1396 Houston, Texas 77Z'A

Gentl enen:

Re.arencc U iaco co your Suj piemen tal Plan of EKp] oration receive.I Kerch 6. Y»< >. «i.ienue<j Kerch IC. !986. for Least OCS-C 4998. Block 5Gi. Kateyerua Island Area. Thfi pi AH Includes M « actlvlM-s proposed fur Well 3.

In eccorcano Miih 30 CFR 260.34. revlseo Dexevber 13. 1979. eno our letter lateC January ?9, 1979. th i t ;-lan has been uetervlned to be complete as of Urch 14. 19%. anc! is now . t i n * considered for approval.

Your plen coiurol 'iuiu>er Is S-1009 aitvi ^houlu be reft-renter. In your COlWftftllfcttIon ano lorrespunaonc* concerning this plan.

Sincerely ; a i s ,

» * Sgd.) A. DonaM Ci.

Acting National SuiervHor Rules anc Product ion

bcc: Lease OCS-C 4991) (OPS-3-^ (f ilE P.OOH) (OPS 3-4 -/Public Info. t\ny of the plan ami £R (POOL.REC;

ADGobert.au*. :3/12/36 TXP4998 Disk la

Pre,0'

l n f ( ; ( i i

tMHUlun

1

TXP Operating Company A Lknhed Partnership I n t o r i . j f cynon Compan, Maiiagaaj Oanarai Pa rmt

2BOO Poll Oak BouMtud • o n . . U96 Mou i l oo T n a t 77151 713 4 3 9 2000

UNITED STATES DEPARTMENT OF THE INTERIOR M i n e r a l s Management Service 434 Imper i a l O f f i c e B u i l d i n g 3301 North Causeway Boulevard M e t a i r i e , Louisiana 70010

Dear Ms. Gobert:

In response to your telephone request of March 06, 1986, please f i n d e ight (8 ) copies of the V i c i n i t y hap on the subject b lock .

Should you have an.- questions regaiding the above, please contact the undersigned at (713) 439-3502.

S i n c e r e l y ,

TXP OPERATINC; COMPANY a l i m i t e d par tnership By: Transco Explora t ion Company

i t B Managing Ceneral Partner

March 07, I98t>

At tent Ion i Ms. An«le Gobert

RegardIng Matagorda I s l and Block * 89 OCS-C 4998 Plan of E x p l o r a t i o n V i c i n i t y Map

John Rosa:.., J r . - Supervisor Regula tory and Environmental A f l a l r s

/ LSB E n c i n s u r e s

MATAGORDA ISLAM AREA tffVtJRE I t AS

BLOCK 58S V C M T r PU»T

H I W H W t» . err.

TXP Operating Company A L i m i t e d Par tne rsh ip h n m Eaptaraaan Compan/. Managing O r a m h r M

2800 Post Oak Bowie.«'d P. 0 Bo« 1396 H o u i i u " Taiaa 7725) 713 439 7000

March 04, 1986

UNITED STATES DEPARTMENT OF THE INTERIOR Minerals Management Service Post Office Box 7944 3301 North Causeway Boulevard M e t a i r i e , Louisiana 70010

ATTN: A. Donald G i r o i r Regional Supervisor Rules and Production Gulf of Mexico - OCS Area

RE: Supplemental Plan of Ex p l o r a t i o n MATAGORDA ISLAND BLOCK 589 OCS-G 4998

Gentlemen:

TXP Operating Company r e s p e c t f u l l y submits f o r your review and u l t i m a t e approval the attached Supplemental Plan of Exploration f o r the abova referenced Block.

I t i s anticipa* that a r i g w i l l be ready to spud on or about October 01, 1986; therefore, Transco n tests your a p p r o i I at the e a r l i e s t possible date.

Should you have any questions regarding the above, please contact the undersigned at (713) 439-3502 at your e a r l i e s t convenience.

Sincerely,

TXP OPERATING COMPANY a l i m i t e d par tnersh ip By:__Transco E x p l o r a t i o n Company

I t s Ma na g lug J i c m m r ^ Partner

Joha Rosata, J r . - Supervisor Regulatory and Environmental A f f a i r s

/LSB Enclosures.- (5) Copies of Supplemental POE (Con f ident a 1 )

(3) Copies of Supplemental POE (Pub l i c I n f o r m a t i o n )

CC: UNITED STATES DEPARTMFNT OF THE INTERXGR Minerals Management Service 115 C i r c l e Way Lake Jackson, Texas 77566

A t t e n t i o n : Mr. Jack C. Sandridge

SUPPLEMENTAL PLAN OP EXPLORATION

BLOCK 589

MATACORDA ISLAND AREA

OCS-C 4998

TXP OPERATIN! COMPANY

Post Office Box 1396

Houston, Texas 77251

DESIGNATED COMPANY CONTACT

Mr. John Rosara, Jr. Supervisor - Regulatory and Environmental Affairs

Houston, Texas 77251

Telephone! (713) 439-3502

TABLE OP CONTENTS

SECTION

Proposed Type and Sequence of A c t i v i t i e s I

(a ) D e s c r i p t i o n of D r i l l i n g Vessel

( b ) T r i l l i n g Mud Components and Add i t ives

( c ) O i l S p i l l Contingency Plan

( d ) Onshore Base F a c i l i t i e s

•t) Support Vessels and Frequency of Travel

Proposed Explora tory Well Locat ions I I

Geo log ica l a:id Seismic Supplements I l l

Shallow Hazards Statement IV

Pro jec ted A i r Emissions V

PROPOSED TYPE AMD SEQUENCE OP ACTIVITIES MATACORDA ISLAND BLOCK 589

SUPPLEMENTAL PLAN OP EXPLORATION

TXP Operating Company was awarded Matagorda Island Biock 589 (OCS-C

4998) i n thc OCS Federal Texas Lease Sale i n Febr.ia-- 1982.

Transco has d r i l l e d one (1) well i n Matagorda Block 589 from a surface

l o c a t i o n of 500' FNL and 7620* FEL of the subject block, which was plugged

and abandoned or 03-10-83. Transco now proposes to d r i l l one (1) a d d i t i o n a l

e x p l o r a t o r y well to test the sands as i d e n t i f i e d i n the Geological Supplement

(Section I I I ) .

The surface location f o r Well "B" w i l l be d r i l l e d at 500' FNL and 4850'

FEL of Block 589. The approximate time frame f o r d r i l l i n g t h i s one ( I ) a d d i t i o n a l

e x p l o r a t o r y well is as fo l l o w s :

WELL DRILLINC COMPLETION ABANDONMENT*

"B" 100 Days 15 Days N/A

Time included in d r i l l i n g phase of operations.

Onshore support operations should commence approximately sevtn (7) days

p r i o r t o d r i l l i n g r a t i o n s . Transco plans CO I n i t i a t e operations In the

f o u r t h quarter of 1986. I t i s a n t i c i p a t e d that a r i g w i l l be ready to spud

the "B" w e l l on or about October 01, 1986. Exploratory operations should

be completed on the referenced block w i t h i n the f i r s t quarter of 1987.

The exploratory work i s to be done w i t h a jack-up type mobile d r i l l i n g

r i g . Attached is a schematic of the t y p i c a l jack-up r i g a n t i c i p a t e d to be

used. The r i g w i l l be equipped w i t h t y p i c a l p o l l u t i o n c o n t r o l equipment

i n c l u d i n g , but not l i m i t e d t o , deck drains, sumps, d r i p pans and sewerage

treatment f a c i l i t i e s .

Attached is a schematic of the d i v e r t e r system planned tc be u t i l i z e d

f o r w e l l c o n t r o l during the exploratory program. A l i s t of mud a d d i t i v e s

i s a l s o attached i n conformance w i t h the n o n - p o l l u t i o n requirements of OCS

Order No. 2.

The shore base for t h i s lease w i l l be Transco's service f a c i l i t y located

in I n g l e s i d e , Texas. Included i n the f a c i l i t i e s are a c e n t r a l warehouse,

o f f i c e b u i l d i n g , pipe rack area, three concrete helipads, f u e l storage tanks,

waste water treament p l a n t , parking areas and appropriate f i r e - f i g h t i n g equipment.

No a d d i t i o n a l onshore space w i l l be required at t h i s time.

Various service f a c i l i t i e s such as mud companies, dock soace, warehouses

and heli p a d s are found at I n g l e s i d e . E x i s t i n g f a c i l i t i e s are judged ad qua to

f o r h a n d l i n g various a c t i v i t i e s .

Both helicopters and boats w i l l be used in the transportation network.

Dependent on weather conditions, travel routes w i l l be the most feasible.

A crewboat, workboat and standby boat w i l l be u t i l i z e d . The la t t e r w i l l

be anchored near the r i g for the duration of the project. I t is estimated

that the boats w i l l average one round t r i p every day, and the helicopter

should average ten trips weekly.

The Oil S p i l l Contingency Plan for TXP Operating Company, revised in

September 1985, was approved by the MMS on October 15, 1985.

Transco i s a member of Clean Gulf Associates. In the event of a s p i l l ,

Clean Gulf Associates equipment, consisting of skimmers, booms and spray

systems, could arrive at the designated area within 12 to 15 hours of n o t i f i c i a t i o n

from the shore base located in Ingleside, Texas.

A l l d r i l l i n g operations w i l l be conducted in a safe manner, and w i l l

be supervised by a qualified Transco r«\ resentative on the r i g at a l l times.

£itt * ICS-

fr* •

• n Me'icoater Oe:* * 71 '*tSL

V

be

Vots-iSO "s-'cJ MuO Line - .

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END ELEV-' I

P L A N & E L E V A T I O N

T Y P I C A L J A C K - U P DRILL ING STRU TURE

MATAGORDA ISLAND BLOCK 589

, SCALE A P P L I C A T I O N BY T R A N S C O

E X P L O R A T I O N C O M P A N Y

Ve.itline is vented to Starboard and Portcide of rig

500 psi hosa to starboard

3C7 20' ANNULAR

Oa p s i hose

Li

8* HYDRAULIC VALVE

Hydnl ana " Hydraulic Valve ccr.:rc!3 work simuitar.cous - Hydrsl cloce Valve Coon

\ to p o r t

S" HYDRAULIC VALVE

j TRANSCO EXPLORATION CO

DIVERTER SYSTEM

MATAGORDA ISLAND BLOCK 589

( f

I . ITEMS USED ON A ROUTINE BASIS;

M'.'O h CC^LETION FLU:? COMPONENTS &

•3DITIVES

T R A D E N A M E S

IMCO

I r c o Bar l a co Gel l ace L i g R D - i l i C a u s t i c loda A l u a i n u a

S tea ra t e L i a e l a co T h i n Soda Ash

B i c a r b P o l y Rx T r r p MD

)bao

3.AP.0TD K! ICHEM MACCCEA.,> DESCRIPTION

B a r i t e / 5 a r c I d Aquagel Carbonox Q-5roxia Ca..^- .. • Soda AluainuO

Steara te Li=e CC-16 Soda Ash

Bicarb Durenex Can De t . D. f e a r e r

3 a r i t e / M i l b a r B a r i t c / M a g c o M r i l i l g e l Magccgel L5 gco Tannai.-.in Ur.i Cal Sperccne Caustic Soda • Caustic Soda AJ.uri.nua Alur.i.iua

S t t a r a t e Stearate L i r e Liae Ligcon XP-20 Soda A_i!-. Soda Ash

Bic-.rb Bicarb Cr -crol-X Res-r.ex

K. o. D-r LD-,3 Mag-.-al

B&ri*-' < r a r i u a S u l f a t e ) B'.. vn i M Lig-. .tc

»' - „ignosulfo;-.ate SOU L.:- Hydroxide A.1 urr.j nua

F*>aratc IfIc:_ua Hydroxide Modified L i g n i t e

Sodiua Carbonate Bicarbonate of Soda

Selected Polymer Bl." "J Deterge-.t Defoarcer (Usua.ll- ^icn.-baje. )

I I . ITEMS SED LESS FRiOllNTLY:

DMS A k t a f l o s DKS CMS I c c o Lo id Inperacx H i l s t a r r . i My Lo Gel CMC Ce l lex CMC CMC

Cypan Cypan Cypan Cypan Pera-aioid Dex t r t d PerTTj-Lcso Poly Sa l Dr i spac Drispac Drispac D r i - pac Cyp Cyp Cyp Cyp K M Z / S u p c r d r i l H M I / S u p e r d r i l HMI/S- p e r d r l l H M Z / S u p c r d r i l

Black Magic Black Magic BlacK '. c Black Magic Super s±x Supermlx

$-.><'•: Cupermix

L u b r i k l e e n T--rq T r i a L a b r i s f l l Magolube laco Myca Mica Tux M i l - K i c a Ma go-Mica I - c o P lug V a i l - N u t M i l Plug Nut Plug

I r o n i t c I r o n i t e I r o n 1tc I i c n i t c

- M l Card -

Separan Separan Separan Separan

Nonionic Mud S u r f a c t a n t P r e g e l i - t i n i z e d SLa'*ch Sodiua Carboxy Methyl

C e l l u l o s e Sodiua P o i y a c r y l a t e Organic Polymer Po l y a n i o n i c C e l l u l o s e Cyosum (Plas - of P a r i s ) C i l s o n i t e ( t - 2 r ) -

Natu r a l Hyd- '-.cvbon + Wet t ing Ag^-:t

Mud Ccnccntrare f o r spo t t i ng f l u i d

Crr-cnic L u b r i c a n t Mica-Flakes Ci^und V'alaut or o h e r

nu t h u l l s F v n t h e t i c I r o a O x i d i , H2

Jcavcnger Y.l 'i Scavenger ( Z i n c

Carbonate) Polyacrylanl r?e I ' o l y n e r

ATTACSSItUI t?

>CjBB S USED LESS FR r rVENTLY: (CONTINUED)

Sale SAPP

Salt SAT?

KCL KCL

I I I . OIT BASE MUD:

Salt SAPP Shale Trol KCL

Sal t SAP?

KCL

•*- .ua C h l o r i d e S.mi. .-. A c i d F/ropnosp"- t e •; Juao 'AJuminura C c pound h o t a s ^ i i n C h l o r i d e

IMCO BAROID

l a c o Spot Skot Free

Kenol -S

Ken-Gel

r Xea- Cal -L

InvernL1

Geltot.e

MILCHEM

M i l - F r e e

Carbo-Tec

Carbo-Gel

MACCOBAR

Pipe Lax

O i l f a z e 6 V e r t o i l

VC-69

OIL BASE

SFT 1 Supertax

DE-CRIPTION

DV-33

03 Gel

SA-A7

Chea W

f m l z i . f i » r s f o r S h o t t i n g f l u i d s

E a u l s i f i e r s , g e l l i ' i r agents m d f l u i • l o s s agents f o r o i l cuds

C ' g a n i p h i l l i c c l a y s v i s c o s i f y i -

A i . ' h a l t i c V i s c o s i f i e r

Organic w e t f a g a >e*tt J

F l u i d l o s s agents

D r i l l t r e a t Ca.bo-Mui

•v*R Duratone Carbe-Tro l

I V . PUM?-D0'.^ & INHI3IT0S FLUID:

Norco No. 6 Refined O i l & No. 2 Di ' . se l + 1Z-3Z C o r r o s i o n I n h i b i t o r s .

V . MET-iCD OF DISPOSAL:

A l * nud add i t i ve s . i l l be disposed of overboard i n t o the f. t l f o f Me:;ico a f t e r d i l u t i c o f f r e s h or s t a ^ i t e - , / f l u i d c o n t a i n i n g f r e e o i l w i l l be t r a n s p o r t e d t o l a n d f o r d i s p o s a l . >

x=28836l7.99 ' G O R 0 A

Y=243522.24 LATxze-ze'za.zio' .0 ;G=96 •'4^58.065•

X=288S715.81 Y r l 5 0 4 8 0 . 8 0

8 ' rSL'R LOC 2 / •'-2^03705.81

/ > *14^80.00 / LAT =28M2'59.26«i*

LONG^G' t t ' l l ^L r

X«2«e 555.81 *« ! r , . 50.00

589

r<EN BLK.

> '425 '.00 LA 1 «2J*H'45.B4«r L0N0s^6'12'47.992<

=t 74640.00 X=2S05555.ei

I h e r e o y ce r+ l *> +1 o t r t e above p la t c o r r e c t y r v f t e c r u Ha p r o p o s e d l o c o t ' o n .

DAV!" M. ADAMS Reg. r T o f . Engineer, Reg. No. 55144 Phone 439-3285 Hous -cn , Texas

^Wf TRANSCO LXPlORAT' iN COMPAQ £• V t SuteifS r j •># 1IUN&CO f «RCY CXmPklCI

4CO0 60on

». * TAG 31 .LA ISLAND AF«E« OFFSHORE TE <AS

BLOCK 58$

SURFACE LOCATION

WEL'. 2

TXP Operating Company Tran sco £ x pi or.- io n Company, Managing General Partner

280U °c»t Oik Boulevard P O o« 1396 Houstcn. TCIJ* 77251 713 4 : J 2000

Febnary 20, 1986

United States Department of the I n t e r i o r Geological Surve P. 0. Box 794/ Meta i r i e , LA 10010

Matagorda Block 589 OCS-G 4998, We1 I #2

Gentlemen:

This l e t r e r i s in reference t o Transco's lease OCS-G 4998, Matagorda Block 589 shai'.ow hazard review. Transco has d r i l l e d one well on the block and proposes to d r i l l a second w e l l at a surface l o c a t i o n of 500' FNL, 4850' FEL of block 589. Based on the data gathered by Racal Decca Survey Inc. the surface l o c a t i o n i s clear of any shallow hazards, nan made hazard? or p r e - h i s t o r i c s i t e s . Transco i s i n concurrence wi h Racal Decca Sur"eys Inc. 1n evaluation of the block.

n

Senior Geologist

HMB/cr.

PROJECTED k i t EMISSIONS

MA ioCORDA IS LA. V) IVLOCK 589 OCS-O 4*98

S»rPPlK«PKTAL FLAN OF EXPLORATION

The Supplemental Exploratory P1 ?n for Matagorda Island Block 589 describes d r i l l i n g , comp. 'ion and/or abandonu'-nt operations Operations are expected to continue for a period of approxiti.jtely 115 days on one (1) well. The projected air emissions calculated on an annual basis are as follows:

MAJOR SOURCES (OFFSHORE)

(EMISSIONS IN LBS/DAY) * TOr'S PER YEAR **

rox co voc TSP so 2

Power used aboard d r i l l i n g ves sp l , approximate f u ^ t - 201.29 A3.57 6.86 14.38 13.39 - g i d r i l l e d 12,500 (11.57) ( 2 . - U (0 .93 ) (0 .83) (0 .77 )

* Based on 60 h p h r / f t . from Table 4 -3 , "Atmosph. r i c Emissions from Offshore O i l and Gas Development aod P roduc t ion" , EPA Report No.

50/3-77-026, June 1°77.

** Emission f a c t o r s f r r . - . r . b l e 3 . 3 . 3 - 1 , " " o m p i l a t i o n o f A i r P o l l u t a n t Emission Fac to r s" . Th i rd E d i t i o n , .PA Report AP-42, August 1977.

WING* SOURCE (OFFSHORE):

1. Helicopters used in these operation; are expected to make 173 rou-.td t r i t s during the project, bas -d on approximately .'0 round Tips weekly (or 1.5 round trip's daily*.

2. Workboats and crevboats may use 115. 'HQ -jallons of fuel for exploratory operat.'o s '..-.ed on using approxim ._t-1) 1,000 gallons per day at most

3. Incite; i f r s are expected ;o burn 14.38 tons of pape.- waste during the project, based on burning approximately ?SO pounds of waste per day.

EMISSION IN TONS PER PROJECT *** NOX CO VOC TSP SO,

16 z9 4.55 1.63 0.27 1.25

*** Tables > 2 .1 -3 , 3 .2 .3-1 and 2 . 1 - . 'Comoi la t ion o f A i r P o l l u t a n t Emissions Fac tors" , Th i rd Edit -n iFA Report AP-2, August 1977.

Projected A i r Emissions Matagorda Island Block 589, OCS-G 4998 Page 2

TOTAL ALL SOURCES (OfPSHORE):

NOX CO VOC TSP S02

MAJOR 11 57 2 51 0 93 0 .83 0.77 MINOR 16 29 u 55 1 63 0 27 1.25

TOTAL 27 86 7 06 2 56 1 . '0 2.02

ONSHORE SOURCES;

Th' se should be about the same as minor -.ources unless new f a c i l i t i e s are i n s t i l l e d at the Ingleside shore base. No a d d i t i o n a l f a c i l i t i e s are required or planned at t h i s time.

EMISSION EXEMPTION DETERMiNAT ON

Prop sed exploratory operations i n Matagorda Island Block 589 are located approximately 15 statute miles from the c l o s t s t onshore area. The onshore support base for t h i s a c t i v i t y i s located i n Ingleside, Texas.

For CO: # - 1400D = 20,678 tons per year.

Fc. 10X, VOC, TSP, SO,: • 33.3D - 500 tons per year.

These a i r emissions for operations associated w i t h the proposed Exploral Plan for Matagorda Island 589 are believed to be conservative; that i s , actua'. emissions should be less than i n d i c a t e d . Even so, the indi c a t e d emission rates are q u i t e small. Considering the lack of p o l l u t i o n in off s h o r e ambient a i r , the r e l a t i v e l y long distance of the subject block o f f s h o r e , and e r e l a t i v e l y short duration of these emissions, any p o t e n t i a l e f f e c t s fror the omissions must be considered i n s i g n i f i c a n t .