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Home My WebLink About194-083THE MATERIAL UNDER THIS COVER HAS BEEN MICROFILMED ON OR BEFORE JANUARY 03,2001 M PL A T E IA L U N D W E R T H ISM A R K E R C:LOKKMFILM.DOC PLUGGIN~ & LOCATION CLEA..ANCE Rw, PORT State of Alaska .ALASKA 0IL & GAS CONSERVATION COHMISSION -. Memcrandu_m To File: Well Name Operator ~~C~ Note casing size, wt, depth, cmt vol, & procedure. Review the well file, and-comment on plugging, well head Well head cut off: Marker ~ost or plate: Location Clearance: Code Signed · J STATE OF ALASKA A'EASKA OIL AND GAS CONSERVATION CO~VllSSlON WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1 Status of Well Classification of Service Well OIL E~ GAS E~] SUSPENDED E~ ABANDONED [] SERVICE [~ 2 Nameof Operator 17 Permit Number ARCO Alaska, Inc I 94-83 3 Address 18 APl Number I P.O. Box 100360, Anchorage, AK 99510-0360 j9 10 50-029-21396-02 4 Location of well at sudace 1587' NSL, 998' WEL, Sec 2, T10N, R15E UM At Top Producing Interval 2526' NSL, 2187' WEL, Sec 2, T10N, R15E UM At Total Depth 2224' SNL, 1843' WEL, Sec 2, T10N, R15E UM Unit or Lease Name PRUDHOE BAY UNIT Well Number 9-31B 1 Field and Pool PRUDHOE BAY FIELD 5 Elevation in feet (indicate KB, DF, etc.) I 6 Lease Designation and Serial No. f RKB 50' I ADL 28324 12 Date Spudded 13 Date T.D. Reached 7/20/94. 8/5/94. 17 Total Depth (MD+TVD) 9763' MD / 9048' TVD 18 Plug Back Depth (MD+TVD) 9026' MD / 8710' TVD 14 Date Comp., Susp. or Aband. 4/11/96 (P&A'd). 19 Directional Survey i-I PRUDHOE BAY OiL POOL 15 Water Depth, if offshore 116 No. of Completions N/A feet MSLI 1 J20Depth where SSSV set I21 Thickness of permafrost 2096' feet MDI 1900' (approx) 22 Type Electric or Other Logs Run Directional, GR, & Multi-shot (ran from kickoff at 9407' MD to TD at 9763' MD). 23 CASING SIZE WT. PER FT. 20" 91.5 # 13-3/8" 72 #/68 # 9-5/8" 47.O # 7" GRADE H-40 L-80/K-55 L-80 CASING, LINER AND CEMENTING RECORD HOLE SIZE CEMENTING RECORD AMOUNT PULLED 30" 17-1/2" SE-FI'lNG DEPTH MD TO P Bo'FrOM Surf 111' Surf 2533' Surf 8405' 8234' 9394' 1800 # Polyurethane 2500 sx CS III & 400 sx CS II 12-1/4" 500 sx G & 300 sx CS I 29.0 # L-80/13CR 8-1/2" 264 cuft Class G 24 Perforations o 3en to Production (MD+TVD of To ) and Bottom and interval, size and number) I None. 25 TUBING RECORD SIZE . DEPTH SET (MD) PACKER SET (MD) 4-1/2" 9289' & 8843' 9270' & 8774' 26 ACID, FRACTURE, CEMENT SQUEEZE, ETC DEPTH iNTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 27 Date First Production N/A Date of Test IHours Tested - I ' Flow Tubing ICasing Pressure I Press - PRODUCTION TEST J Method of Operation (Flowing, gas lift, etc.) Plugged & Abandoned: 4/11/96. PRODUCTION FOR TEST PERIOD ¢ CALCULATED 24-HOUR RATE OIL-BBL OIL-BBL GAS-MCF GAS-MCF WATER-BBL WATER-BBL OIL GRAVITY-APl (corr) 28 CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. *NOTE: 9-31B Pre-Sidetrack Plug & Abandonment Operations Summary attached. RECEIVED Alaska Oil & Gas Con~. Commission *NOTE: This Completion Report is submitted as required per the approved Application Sundry (Apprvl # 96-64, of 3/21/96) for Pre-Sidetr,:~C~l~l~,~andonment. Form 10-407 Submit in duplicate Rev. 7-1-80 CONTINUED ON REVERSE -.SIDE GEOLOGIC MARKERS 30. FORMATION TESTS Include interval tested, pressure data, all fluids recoverd and gravity, NAME Top Sadlerochit Top of Zone 3 Top of Zone 2 Top of Zone lB MEAS. DEP _TH 8946' 9068' 9106' 9370' TRUE VERT. DEPTH 8638' 8742' 8773' 8970' GOR, and time of each phase, N/A 31, UST OF ATTACHMENTS Summary of 9-31B Pre-Sidetrack Plug & Abandonment Operations. 32. i hereby certify that the foregoing is true and correct to the best of my knowledge Title Enqineerinq Supervisor INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Item 1' Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. Item 5: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. Item 16 and 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. Item 21' Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). Item 23: Attached supplemental records for this well should show the details of any multiple stage cement- lng and the location of the cementing tool. Item 27: Method of Operation' Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water In- jection, Gas Injection, Shut-in, Other-explain. Item 28: If no cores taken, indicate "none". P~ E C ~ ! V E D Form 10-407 9-31B DESCRIPTION OF WORK COMPLETED PRE-SIDETRACK PLUG & ABANDONMENT OPERATIONS 4/1 1/96: Performed Cement Plugback in preparation for Coiled Tubing Sidetrack Drilling as follows: RIH w/CT cementing nozzle & loaded the wellbore w/Hot Seawater. Tagged PBTD at 9390' MD, then PU & pumped 2 bbls Neat Cement, followed by 20 bbls 17 ppg Class G Cement w 4.5 ppb fibers, to abandon the open perforation intervals located at: 8989 9038 9055 9252 9273 9287 9322 9405 - 9007' MD (Z4) - 9048' MD (Z4) - 9065' MD (Z4) - 9254' MD (Z2) - 9275' MD (Z2) - 9289' MD (Z2) - 9340' MD (Z2) - 9820' MD (Z1 Open Hole) Placed an estimated 2 - 5 bbls of cement behind pipe & attained a maximum squeeze pressure of 600 psi held for one hour. Contaminated cement w/biozan & jetted contaminated cement from wellbore to 9025' MD. PC)OH w/CT. WOC. 4112196' WOC. PT well to 2000 psi; bled down to 1500 psi in 10 minutes. RIH w/milling BHA & tagged top of cement plug at 9026' MD (upper perforation interval still open). Proceeded with 9-31C Coiled Tubing Sidetrack Drilling operations. RECEIVED JUL 1 2 Alask,q Oil & fl~s Cons. Commission Anchorage AO,303 In¢i~'v~'dua i Ue'J '1 (S,... .... ,og'¥ca'l kJater'~'a'i s Inven~or'y F'E Rl','i I T DATA 'T .,F,.ATA~.~,F' L U S 9a,--.08.3 ~+07'~ iR COkiP DATE; 08/'05/9,~ R 07/09-.-.--08/06/~a. 9a.--..083 ~RVEY 9 z~..... 08 :~ ~;'. V E Y ~~1~~SAS L~FT R 939~-.-9~92 A~,IAI3Ri.~.L F,: ANADRIL, L !. 250--10681 9~.~.---083 ~d~{ iE: F L.. 88a. 5~9320 9a.-,083 ~.:'ROD PROF L 891a,~9-36a P aEie ~ ', ..... Pate; 06/08/96 F.-: UN D AT E~?,.' ECVD 09/ 26/ 9t~ 09/26/9a. 09/26/9~ 05/07/96 I I 1 / 0 ~/9 ~ I i 1/0~/ 1 12/' 16/'9~ Ar'e dr"y cli:'lzch samp'l es r'eclu'¥ r'ed? Was the v./e i '1 cor'ed? yes s~'s Ar'e wei '1 tests r"eClU"i'~i"ec~?~, yes~Rece~'v~d'~' Weli "¥s '¥n cornpi'i'ance Z n'l' t '¥a 'i C O~,~,~ EN 1"S yes ~r'ece'i~ved? ~ yes iso yeE~ I t~4~ PA~ HO~ W~LL H~AD IJ]CATION: ~AT(N/-S) 0,00 DEF'(F.J-W) AZIMUTH ~OM ROTARY ?AB~ TIE IN Pt)IHT(TIP) MEASUP~, DEPTH TRUE VERT D~ INCLIHATIOH ~iMUTH LATITUDE(N/-S) D~.q'U~.E(IU-W) ~394,00 898'L00 49,15 32,30 11~,3I -1026,~ ORIG'INAL ,dl~ NC. 2 D]~F'TH t)~TH ft ft ft c/J94.00 ¢.0 0969.® 9407,00 13.0 0997,47 9417.u~ ~0.3 9003.95 94~,~ 5,0 ~07,15 9427,~ 5~0 ~10,26 9437.0(: 9442,00 9447.00 9452,0C, 9457.00 9467.~ 9472.00 9476.~ 9481,00 9486.00 9491,00 9501,00 95i! 9516.00 9521.00 9557.00 9623,~, 9633.00 9648, O0 · 9653.00 9656, O0 9673.00 9678,00 9683,0,0 9693,00 9690.0C ?703.00 5.0 9013,25 5,0 901_8,74 5,0 .°021,23 5.0 90~3.55 5. b 9025,68 5,0 9027,61 5,0 9029,34 5,0 9030,90 4.0 9032,03 5,0 5,0 9034,41 5.0 ~35,37 ~.0 9036,19 5.0 9036,86 5.3 9037.40 5,0 9037,81 5.0 9038,06 5.0 ~38,19 :8.0 9038,55 18.0 ~,3 ~,~,83 57.0 ~,43,91 !C.O 9O44,70 15,0 9045,91 5.0 9~46,32 5,0 5..~ 9047,14 5.0 iK)47,52 5,0 9047.67 5,0 9048,17 5.0 ~048.41 10.0 9048,74 5.0 9048.~ 5,0 i~M8.81 TAI;,'~L~ STATION AZ]~JTH ]~TI?LiDE SECTION INCI~I, K/-S ft deg_. deo ft 435,67 49,15 32.30 1t64,31 44-=;,53 49.50 3.';',3C~ 1172,64 453.15 49.80 3(:.~ 1179.!4 456.~9 50,60 3] ,20 1182,43 460,90 52.30 31,50 1185,77 464.90 54.30 2~,00 1189,19 469,02 56,70 3;.~) 11~,74 473,25.- 59,00 30,:0 1196,4(, 477,58 61,30 2~.~ 1200,16 482,01 63.~ 29,:0 1204,03 486,52 66.00 2~.50 49i,12 68,70 27,60 1212,06 495,80 70.70 Z~.)C) 1216,22 · 500,53 73,00 ~6,80 1220,45 504,35 74.~ 2~,40 1~>3,89 509,16 76,30 26,~) 1228,22 514,01 78.00 2E,50 1232,56 518,89 79,80 26,00 1~,98 523,79 81.40 2~.~0 1241,42 528,70 83,10 ~-,:0 1245,90 533,64 84,40 538,59 &'.',, 30 26,50 1254,88 .5.43..5,6 87.90 27.30 1259,33 548,~ 89.20 ~:c.,~' -01263,76 566,49 8~,50 2el,lO 1279,63 56~4,42 86,80 26,00 1295,50 593,40 86,30 31.20 1303,31 650,24 85,5C, ~],20 135..1,94 660,21 85.40 31.20 1360,47 67~,16 85.30 3],50 1373.24 680,14 85,30 31,~0 1377,48 685,12 85,30 3~,70 1381,72 6~',i0 85,40 31.40 1365,97 695,09 85,80 ~,~0 1~0,2! 700.08 86.30 32,:)0 1394,44 705.07 ~..90 33,00 1396,65 7!0,06 87,40 Z.~ 1402,84 720,~. 88.90 33,~ 1411,19 725.05 89,60 ~.70 1415.35 730.06 90.20 '.~,00 1419.50 ~ 9-31B CT ST.2 D£PA~LF~ DtSPLACEI~T at E/-W ft ft -1026.44 1552,16 -1021,17 15-~,95 -1017,18 1557,~ -1015,21 1558,46 -1013,17 1559,67 AZZFUTH.' ':-i ~.c'O 318,95 319,35 -IOll,OG' 1560,92 319,63 -1008,99 1562,27 -10~.~,,86 1563,70 319,92 -1004,71 156'5,19 32D.¢7 -1002,~ 1566.Z7 -1000,36 1566,43 3.23.37 -~8,19 1570,1 ? 3~ 53 -~6,03 1572,03 3.2D-66 -f~'3,87 1573,94 3~,84 -792, I5 1575,52 E2:).97 -~,~ lb'77,53 32:,I3 -987,62 Ib"79,57 3.21.29 -985,65 1~1,65 32_,45 -?B3,51 1583,80 321.61 -981,40 15&6,01 32:,~ DL~ d~/ lOOft 2,69 11,82 17,14 34,57 41,14 49,78 ~,03 47,16 44,57 51,16 56,50 ~,~ 46,97 37.31 34,11 34,52 -979.28 1586,~ 3.21.';3 27,19 -977.09 1570,42 3Z2,(Y.7 42,91 -974.83 1592,~ 327.-36 35.77 -972,51 1594.63 3~: 42 30.52 -964,03 1602.13 3.23-Cl 3,89 -955,58 1609,60 323,59 -951,14 16i3,47 3.23.06 -~21,69 1636,23 325,72 -?I6,52 1640,3~ 3.25.C3 -~,75 1~,69 326,5I -~6,13 1~6,~ ~_~-E6 -903,52 1650,91 326,82 -~,91 1653,~ 2~.~8 -898,28 16~,17 3~,13 -8~, ~ 1657, ~ 3~7.39 ~,~ 1.40 1,01 2,10 3,94 0,79 16,10 10,~ -8~,24 166'1,47 ,227.~.0 10,77 -B84,76 16~5,6I 3Z7,91 18,02 -~1.98 1~7,~ 325-C7 14,13 -879,19 1~9,72 328,~ 13,~ 3 f~ t~ tt 770~,00 5,0 904~,75 97~3o<~ 5.~ 904~.61 9718,00 ~,0 90~,4I DEPA~:TLBJ~ DIS~'LACEM~]~Tat AZI~LTH DLS ~-W de.o/ ft ft de~ l(~Oft -876,4<, 1671.78 328,3~ ~.10 -873.60 1673,~ ~Z~.5~ 17,~ -870.79 16~.~ 328,70 12.16 : ,; ' .' . ~ , '~-~--L:'*.',i ~':'-,.* .7- ' - - '- , ,'r ~;,. '' ' ' :' ' ' - -_.... -e..,,- .... , .... 1111 E. 80th Ave. Anchorage, Alaska 99518 TEL (907) 349-4511 FAX (907) 349-2487 August 8, 1994 ARCO ALASKA, INC. P.O. Box 100630 Anchorage, AK 99510-0360 Attention: John DeGrey Dear John: O~ I have compiled a summary of Anadrill's performance on DS 9-31B CT ST #2 drilled with Dowell Coil Tubing Unit #2. SERVICES PROVIDED Directional, Gamma Ray and Multi-shot were used from the kickoff at 9407' on 20-JUL- 94 to TD at 9763' on 06-AUG-94. OPERATIONAL STATISTICS SLIM 1/Gamma Ray pumping hours were 115.50 total and the footage made was 488' over a total of 21 SLIM tool runs. Of this footage, 57' represents the first attempt to drill the well before the first plug was set and 75' represents the second attempt to drill the well. A modified survey tool used exclusively for multi-shot modes was used on this well. This tool moves the survey package from 13.5' from the bit to 2.3' from the bit. A total of 8 multi-shot runs were performed on this well, with the gamma ray tool being used on 6 bit runs and the DSS tool being used on 7 bit runs. There was 1 MWD surface equipment failure, 1 MWD gamma ray failure and 1 MWD battery failure associated with this well. Bit runs 1-6 represented the first attempt to drill well #9-3lB. The kickoff point was 9410' with the final TD before plug back being 9467'. The average measured dogleg from the realtime surveys on bit run #1 was 66.00 deg/100'. This was well ahead of the planned objective for the well. Numerous attempts were made to get the multi-shot tool down through the shoe to get a profile of the well. In the end a reaming assembly was used to clean the hole out. This proved ineffective for when the multi-shot tool was run on bit run #6 it showed we had re-entered the old well bore with every survey being at 49 deg. This was far short of the planned objective. The main reason for this was the cement plug that was set was probably not large enough to sustain the action of the reaming/clean out runs. The decision to set the plug was based on the surveys provided by the multi-shOt tool. i~Y 0 7 1996 ~.~.,,_a Oi~ & Gas Cons, Commission, Bit runs 7-9 issued the start of the side track $1 on well $31B. The kickoff depth was at 9416' with the final TD being at 9491'. The downhole orienting sub presented us with situations that delayed the well from being completed. Once the BHA was near bottom the MWD tool would not show a change in the tool face readings even though the pumps were cycled to activate the orienting sub. Indications were the sub was faulty. On bit run #8 a realtime survey produced an angle of 64 deg on bottom. This angle proved we were not building enough based on the planned objective. A multi-shot run was performed once 75' were drilled. The multi-shot surveys indicated that we were not building enough angle. The well profile showed we would need 88 deg/100' to complete the well. The decision was made to cement back and to start the second kick off based on the lack of build made. Bit runs 10-21 issued the start of the side track #2 on well $31B. The kick off depth was at 9407' with the final TD being at 9763'. The first 62' feet of sliding showed we were building at 50 degtl00'. The multi-shot tool showed we had 73 deg at 9474'. In bit run $12 an adjustable bent housing motor was used. After 51' was drilled the angle projected to the bit was between 90-91 degrees. At that point a multi-shot with the gamma ray device was used to determine the profile of the well. The final survey at the bit showed 89.3 degrees at the bit. The gamma ray data determined the depth was offby 18'. On bit run $15 high operating pressures were the order of the day. The high pumping pressures were caused by the new coil tubing that replaced the original tubing was a fraction of an inch smaller and the second reason was the mud started to thicken up. After sea water was pumped to thin. the mud out the operating pressures dropped 500g to 3700 psi. Bit runs 16- 17 were good MWD runs that produced a final realtime angle of 89.4 deg after drilling 115'. Consistent with these two bit runs were variable ROP rates which suggested formation changes at the bit and extensive stacking of weight to the bit. Bit run #19 was a multi-shot run that produced 92.6 deg on bottom. This high angle at the bit coupled with the large depth correction addition of 16' presented us with situations that delayed the well from being completed. The final bit run was started at 9720' at an angle of 92.6 deg. The plan here was to run in the hole with a 1/2 deg adjustable bent housing motor to time ream the low side of the well to reduce the angle from 92.6 deg to 90 deg. After drilling 43' of new hole it was determined that the well was side tracked from the drilled portion. The final depth of the well was 9763' MD (coil tubing measurement). JOB PERFORMANCE DIRECTIONAL A total of 8 multi-shot runs were done on this Well. From these runs 42 surveys were used by the directional driller to determine the profile of DS 9-3 lB CT ST$2. The multi-shot data showed good build rates through the sands. The final survey location was: Survey Depth: 9718' True Vertical Depth: 9048.7' Dr: 92.6 deg Az: 34.2 deg North: 1431.9' Target Section: 745.0' Displace:1675.9' at Az 328.7 deg FORMATION EVALUATION Slim 1/Gamma Ray was used on a limited basis on this well. The log represents a section of the well drilled previously that was logged this _time to try to tie the depth system to some known reference point. On one multi-shot run the gamma ray log showed that the depth system was off by 18'. This was when it was compared to the log from the previous section of the well. Later on in drilling side track #2 the depth was corrected by adding 16' to the TD-depth. The log provided in this end of well report shows the depth fluctuations on both runs. The gamma ray data was gathered in three different methods on this well. Recorded mode, realtime drilling mode and realtime reaming mode were all used to produce the f'mal log. The sixteen foot depth correction is very evident on the section between 9400' to 9500'. Here the comparison of the recorded data to the reaming realtime data is very clear in showing the depth correction. The data was not combined to form one log for one data is recorded and the other data is realtime. The limited use of the gamma ray tool was based on the desire to run in the hole with a very short BHA to complete the well and the difficulty to drill the final part of the well without stacking weight to the bit. The addition of the gamma ray tool would stiffen up the BHA and also move the sensor package farther away from the bit. The DSS package was the BHA of choice on this well. Enclosed please find a copy of the realtime surveys and multi-shot surveys from side track #2, a 5" measured depth gamma ray log, a 5" true vertical depth gamma ray log, a 5" gravity tool face measured depth log and an ASCII f'fle of all of the pertinent drilling data associated with this well are also included in this package. Data backed up from the first two attempts are also included in this report. It goes without saying that ANADRILL appreciates being involved with ARCO ALASKA on these coil tubing jobs. If we can be of further assistance to you on this well or on future directional drilling coil tubing wells then please contact me at 349-4511. Field Service Manager GeoQuest 500 w. International Airport Road Anchorage, AK 99518-1199 ATTN: Sherrie NO. 10167 Company: Alaska Oil & Gas Cons Comm Attn: Larry Grant 3001 Porcupine Drive Anchorage, AK 99501 5/2/96 Field: Prudhoe Bay Anadrill Anadrill Anadrill Floppy Well Job # Log Description Date BL RF Sepia Survey Program Performance Disk Calculation Letter D.S. 9-31B CT ST #2 MWD GAMMA RAY 940805 ~ 1 S I G N E D' ~ ..... [~.~~_ DATE: STATE OF ALASKA ' ALASK/~--'IL AND GAS CONSERVATION C~, ]"MISSION APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon X Suspend Operation shutdown Re-enter suspended well Alter casing Repair well Plugging X Time extension Stimulate Change approved program Pull tubing Variance Perforate Other 2. Name of Operator ARCO Alaska, Inc. 3. Address P.O. Box 100360, Anchorage, AK 99510-0360 4. Location of well at surface 1587' NSL, 998' WEL, Sec. 2, T10N, R15E, UM. At top of productive interval 2526' NSL, 2187' WEL, Sec. 2, T10N, R15E, UM. At effective depth At total depth 2224' SNL, 1843' WEL, Sec. 2, T10N, R15E, UM. 5. Type of Well Development Exploratory Stratigrapbic Service ORIGINAL 6. Datum of elevation(DF or KB) 50' RKB feet 7. Unit or Property Prudhoe Bay Unit 8. Well number 9-31B 9. Permit number 94-83 10. APl number 50 - 029-21396-02 11. Field/Pool Prudhoe Bay Oil Pool 12. Present well condition summary ~..~ ~ ,,....... , ~.. Total depth: measured 9763 feet Plugs(measur~)~-~ ~T~¢(J~ 9405' MD (10'25'94) true vertical 9048 feet Effective depth: measured 9405 feet MA~ ~- 0 1~)9~ true vertical 8996 feet Junk(measured) Alaska 0il & ¢~as Cons. Commission Casing Length Size Cemented Anoh0r¢.ge Measured depth True vertical depth Conductor 111' 20" 1800# Polyurethane 111' 111' Sudace 2483' 13-3/8" 2500 Sx CS III & 400 Sx CS II 2533' 2533' Production 8355' 9-5/8" 500 Sx G & 300 Sx CS I 8405' 8136' Liner 1182' 7" 264 cu ft G 9394' 8988' Perforation depth: measured 8989 - 9007'; 9038 - 9048'; 9055 - 9065'; 9252 - 9254'; 9273 - 9275'; 9287 - 9289'; 9322 - 9340'; Open Hole: 9405 - 9820' true vertical 8679 - 8694'; 8720 - 8728'; 8734 - 8742'; 8889 - 8890'; 8904 - 8905'; 8908 - 8910'; 8934 - 8948'; Open Hole: 8996 - 9048' Tubing (size, grade, and measured depth) 5-1/2", NSCC Tbg @ 37' MD; 4-1/2", 12.6#, 13CR, NSCT Tbg @ 37'-8843' MD; 4-1/2", 12.6#, 13CR, NSCT Tbg @ 9270-9289' MD Packers and SSSV (type and measured depth) Baker SABL-3 Packer @ 8774' MD; Baker Packer @ 9270' MD; Camco TRCF-4A SSSV @ 2096' MD. 13. Attachments Description summary of proposal x 14. Estimated date for commencing operation March 31, 1996 16. If proposal was verbally approved Name of approver Date approved Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed ~'_/{x4~ '~. ~ Title Engineering Supervisor FOR COMMISSION USE ONLY Conditions of approval: Notify Commission so representative may witness Plug integrity ~// BOP Test ~ Location clearance Mechanical Integrity Test ~ Subsequent form required 10- Original Signed By 0avid W, Johnston Approved by order of the Commissioner Detailed operations program 15. Status of well classification as: Oil X Gas Suspended BOP sketch x Date I Approval No./~/'~, ..._ ~' ~' -~u.~roved Copy Date ~A///~ "--.. L SUBMIT IN TRIPLICATE'"'--'~ Commissioner Form 10-403 Rev 06/15/88 SLW cc: JWP. DS 9-31B Intended P&A Procedure Objective: P&A existing interval in preparation for CT sidetracking operations. Intended Procedure · RU coiled tubing unit and tag bottom. · Pump 22 bbls Class 'G', 17 ppg fibered cement. Squeeze existing perforations. Clean cement top to -9070' md. ( expected KOP is 9100' md) WOC, Tag top of cement. March 19, 1996 6 ,5 4 . 2 COILED TUBING UNIT BOP EOUIPMENT 1. ~:)00 PSI 7" WELLHEAD CONNECTOR FLANGE 2. 5000 PSI 4 1/16" PIPE RAMS :3. 5000 PSI 4 1/6" HYDRAULIC SLIPS 4. 5000 PSI 4 1/6" SHEAR RAMS 5. DO00 PSI 4 1/6" BLIND RAMS 6. 5000 PSI 4 1/16" STUIrFINO BOX 3 2 WIRELINE BOP EOUIPMENT 1. 5000 PSI ?" WELLHEAD CONN£CIOR FLANGE 2. 5000 PSI WlRELIN£ RAMS (VARIABLE SIZE) 4. 5000 PSI 4 1/6" FLOW TUBE PACK-OFF 5000 PSI 4 1/6" LUBRICATOR GeoQuest 500 W. International Airport Road Anchorage, AK 99518-1199 ATTN: Sherrie NO. 9149 Company: Alaska Oil & Gas Cons Comm Attn: Larry Grant 3001 Porcupine Drive Anchorage, AK 99501 12/15/94 Field: Prudhoe Bay Well Log Description BL RR Sepia RF Sepia Mylar Floppy Disk I D.s. 1-03 '7 ~/lo pERF RECORD (11-23-94) I 1 ' ~. 2-31 q/---( ~ IBP SETTING RECORD (11-29-94) I 1 ~.~. 3-~2 '~ ~ ~ DUAL ~URST T~T-P U~-24-~4) I 1 D.S. 4-3 ~~ ~O,~ PERF RECORD (11-24-94) I 1 D.S. 4-33~~ 3 ~ PERF RECORD (11-28-94) I I ... o.s. 4-39 ~? RST (~1-27-~4) ~ ~ O.S. 4-48 ~ ~[~ ~_ , PERF RECORD (11-24-94) I 1 D,S. 9-30 ST1 ~ ~ ~ ~ PERF RECORD (11-30-94) 1 1 : D.S. 9-31B ~ ~- O'~'~ PROD PROFILE (11-29-94) I 1 ~.s. ~s-37 ~ ~-"~ 7 ~ STATIC PRESS SURVEY (~-~2-~4) ~ I ,, SIGNED' - Please sign and return one copy of this transmittal to Sherrie at the above address. Thank you. STATE OF ALASKA ALASK/~"!L AND GAS CONSERVATION C .... '.MISSION REPORT OF SUNDRY WELL OP -RATIONS Operations performed' Operation shutdown Stimulate Plugging Perforate X Pull tubing Alter casing Repair well Other 2. Name of Operator ARCO Alaska, Inc. 3. Address P.O. Box 100360, Anchorage, AK 99510-0360 4. Location of well at surface 1587' NSL, 998' WEL, Sec. 2, T10N, R15E, UM At top of productive interval 2526' NSL, 2187' WEL, Sec. 2, T10N, R15E, UM At effective depth At total depth 2224' SNL, 1843' WEL, Sec. 2, T10N, R15E, UM 5. Type of Well Development Exploratory Stratigraphic Service 6. Datum of elevation(DF or KB) 50 RKB 7. Unit or Property Prudhoe Bay Unit 8. Well number 9-31B t, lOV 2 1 1994 Gas Cons, Commissl ~0r'a,;" feet 9. Permit number/approval number 94-83 10. APl number 50 - 029-21396-02 )i~1. Field/Pool Prudhoe Bay Oil Pool 12. Present well condition summary Total depth: measured true vertical 9763 feet 9048 feet Effective depth: measured 9405 feet true vertical 8996 feet Plugs(measured) PBTD Tagged @ 9405' MD (10/25/94) Junk(measured) Casing Length Size Cemented Measured depth True vertical depth Conductor 111' 20" 1800# Polyurethane 111' 111' Sudace 2483' 13-3/8" 2500 sx CS III & 400 sx CS II 2533' 2533' Production 8355' 9-5/8" 500 sx G & 300 sx CS I 8405' 8136' Liner 1182' 7" 264 cuft CIG 9394' 8988' Perforation depth: measured 8989-9007'; 9038-9048'; 9055-9065'; 9252-9254'; 9273-9275'; 9287-9289'; 9322-9340'; Open Hole: 9405-9820' true vertical 8679-8694'; 8720-8728'; 8734-8742'; 8889-8890'; 8904-8905'; 8908-8910'; 8934-8948'; Open Hole: 8996-9048' Tubing (size, grade, and measured depth) 5-1/2", NSCC Tbg @ 37' MD; 4-1/2", 12.6#, 13CR, NSCT Tbg @ 37'-8843' MD; 4-1/2", 12.6#, 13 CR NSCT Tbg @ 9270-9289' MD Packers and SSSV (type and measured depth) Baker SABL-3 Packer @ 8774' MD; Baker Packer @ 9270' MD; Camco TRCF-4A SSSV @ 2096' MD 13. Stimulation or cement squeeze summary Intervals treated(measured) See Attached Treatment description including volumes used and final pressure 14. Prior to well operation Subsequent to operation R_e~oresentative Daily Average Production or Iniection Data OiI-Bbl Gas-Md Water-Bbl Casing Pressure · 78 / 175 6 --- 1720 4293 4479 --- Tubing Pressure 292 328 15. Attachments Copies of Logs and Surveys run Daily Report of Well Operations 16. Status of well classification as: Oil X Gas Suspended Service,,, 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed ~ ~'1 · ~ Title Engineering Supervisor Form 10-404 Rev 06/15/88 cc: KZ, JWP Date II- I&- ¢ ~ SUBMIT IN DUPLICATE~j~ 9-31B PERFORATING OPERATIONS DESCRIPTION OF WORK COMPLETED I 0/24/94: MI RU & PT equipment. Added perforations: 9287- 9289' MD (Z2) 9322 - 9340' MD (Z2) RIH w/perforating gun & shot 20' of add perforations as follows: Ref. Log: GR/CCL 7/8/94. Used a 3-3/8" carrier & shot 4 spf at 60/120 degree phasing. POOH w/perf gun. RD. 1 0~27~94: MIRU & PT equipment. RIH w/perforating gun & shot 42' of add perforations as follows: Added perforations: 8989 - 9007' MD (Z4) Ref. Log: GR/CCL 7/8/94. 9038 - 9048' MD (Z4) 9055 - 9065' MD (Z4) 9252 - 9254' MD (Z2) 9273- 9275' MD (Z2) Used 3-3/8" carriers & shot all intervals at 4 spf, except for 8989 - 9007' shot at 1 spf. POOH w/perf guns; all shots fired. Rigged down. Returned the well to production w/gas lift & obtained a valid welltest. RECEIVED N0V 2 1 1994 0il & Gas Cons. Commission Anchora.. ~ GeoQuest BIX) W. Intemcrllonal Airport Road Anchorage, AK 99518-1199 ATTN: Sherrle NO. 9086 Company: Alaska Oil & Gas Cons Comm , Atln: Larry Grant I 3001 Porcupine Drive Anchorage, AK 99501 11/4~94 · Field: Prudhoe Bay Well Log Descflption BL RR Sepia RF Sepia Mylar , D.S. 4-2A /__ ,-- I iOBT (10-26-94) 1 1 D.S. 4'30 ST1 ~ ~-"-~fi PROD PROFILE (10-29'94) 1 , D.S. 4-40 ~ PROD PROFILE (~10-28-94) 1 1 D.S. 9-31B ~i'L~ --- ~ "~ PERF RECORD (10-27-94) 1 1 D.S. 9-50~,. jC~ (~ GAS LIFT SURVEY (10-26-94) 1 1 D.S. 17-7 ~71 - //,~ [_ PERF RECORD (10-29-94) 1 1 'nr ,, ._ SIGNED: Please sign and return one copy of this transmittal to Sherrle af the above address. Thank you. STATE OF ALASKA 011~, A,~ .~KA OIL AND GAS CONSERVATION C fiSSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG I Status of Well Classlflcallo~ of Se~ce Well OIL ~--~ GAS ~ ~ENDED [---J ABANDO4~D [~] SERVICE [--"] 2 Name of ~tor 7 Permit Number ARCO Alaska, Inc 94-83 3 Address 8 APl Number P.O. Box 100360, Anchorage, AK 99510-0360 50-029-21396-02 4 Locatro~ofwellatsurface 9 Unit or Leese Name PRUDHOE BAY UNIT 1587'NSL, 998'WEL, Sec2, T10N, R15E UM ~ ..................... ~ i 10 We~Number A~ Top Producing IntervaJ 'i ;':~ '~'~! Ii '~ 9-31 g At Total DOP~ :~i ~:' ~ 11 Flekl and Peel 5 Elevalk3n in feet (indicate KB, DE', etc.) :1~8: L~a~ ~on and Ser~ Ne. PRUDHOE BAY OIL POOL RKB 50' ! ADL 28324 1 ~ Dat. Spud~17/20/94. 13 Date T.D. Reachods/5/94. ,14 8/5/94.Date Comp. , susp. ~ Aband. I 1S Waler DOPlI1, If ofl~hOr®N/A feet MS d16 No. o~ Corn plellon$1 17 Total Depth (MD+TVD) 18 Plug Back Depth (MD+TVD) 1 g' DirectienaJ Survey 120 Dep~ where SSSV =el I 21 Thicknes~ of permafrost 9763' MD / 9048' TVD 9485' MD / 9034' 'rVD YES [~ NO ~]I 2096' feet MDI 1900' (approx) 22 Type Electric or Olhe~ Logs Run Directional, GR, & Multi-shot (ran from kickoff at 9407' MD to 'iD at 9763' MD). 23 CASING, LINER AND CEMENTING RECOR~ CASING SIZE WT. PER FT. GRADE TOP BOTTOM HOLE SIZE CEMENTING RECORD AMOUNT PULLED 20' 91.5 # I-I-40 Surf 111' 30' 1800 # Polyurethane 13-3/8' 72 #/68 # L-80/K-55 Surf 2533' 17-1/2' 2500 sx CS III & 400 sx CS II 9-5/8' 47.0 # L-80 Sud 8405' 12-1/4' 500 sx G & 300 ex CS I 7' 29.0 # L-80/13CR 8234' 9394' 8-1/2' 264 cuft Class G 24 Perforations open to Production (MD+TVD of Top and BoMom and 25 'FU~ING RECORD lntewal, sJze and number) SIZE DEPTH SET (MD) PACKER SET {MOI 4-1/2' 9289' & 8843' 9270' & 8774' Open Hole Completion: 9405' - 9763' MD; 8996' - 9048' TVD. 26 ACID, FRACTURE, CEMENT SQUEEZE, ETC DEPTH INTERVAL. IMD) AMOUNT & KIND OF MATERIAL USED 27 PRODUCTION TEST Date First Productlen IMe~od of Operation (Flowing, gas lift, etc.) I Date of Test Hours Tested PRQO~JC~ FOR OIL-BBL GAS-M(:~ WATER-EaL CHOKE SIZE I GAS-OIL RATIO 8~/g4. 3.4 TEST PERIOD I~I 6244 Flow Tubing Casing Pr~ CALCULATED OIL-Bi~. GAS-MCE WATER-BaL OiL GRAVITY-APl (con') Press 275 24-H(XJR RATE I~ ~ 02 aa? ? 26 CORE DATA Brief descripMon of lithology, potash, fractures, ~ent dips and p~esence of oil, gas ¢x water. Submit core chips. RECEIVED 'NOTE: See 9-31A Cement Squeeze and Coiled Tubing Skle~ck Drilling Summary arachod. S E P 2 ~ '~ 4 Alaska 0il & Gas Cons. Commission A~0r~.,~ *NOTE: This Completion Report Is submitlod as reflulrod for the aPla¢OVod Permit To Drill (Permit # 94-83, of 6/16/94) for Collod Tubing Side . ,~ Form 10407 Submit In duplicate Rev. 7-1-80 CONTN. JED CN FiEVERSE SDE 29. ' 30. GECL~ ~ FORMATION TESTS NAME Include interval tested, pressure data, all fluids recoverd and gravity, MEAS. DEPTH TRUE VERT. DEPTH GOR, and time of each phase. Top Sadlerochit 8946' 8638' N/A Top of Zone 3 9068' 8742' Top of Zone 2 9106' 8773' Top of Zone 1 B 9370' 8970' 31. MSTOF A'i'rACHMENTS Summary of 9-31A Cement Sclueeze & Coiled Tubing Sidetrack Drilling Operations. 32. I hereby certify that the foregoing is b~e and correct to the best of my knowledge INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Item 1: Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. Item 5: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. Item 16 and 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. Item 21' Indicate whether from ground level (GL) or other eleval~on (DF, KB, etc.). Item 23: Attached supplemental records for this well should show the details of any multiple stage cement- ing and the location of the cementing tool. Item 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water In- jection, Gas Injection, Shut-in, Other-explain. Item 28: If no cores taken, indicate "none". Form 10-407 9-31B DESCRIPTION OF WORK COMPLETED COILED TUBING SIDETRACK DRILLING 7/20/94: M IRU 2" CTU & PT BOP's. 9405' MD; no progress. RIH w/CT & tagged cement plug top at 9405' MD'. POOH w/CT & MU drilling BHA #1 w/3.75" PDC bit. Attempted to jet past 7/21/94: Drilled from 9405' to 9467' MD. POOH w/BHA. 9412' MD. POOH w/memory tools. RIH w/memory GR survey tools, but could not pass 7122194= MU & RIH w/drilling BHA w/3.75" PDC bit. Drilled from 9400' to 9453' MD. POOH w/BHA; had motor failure. RIH w/memory survey tools, but could not work past 9411' MD restriction. POOH w/memory tools. 7~23/94: RIH w/4.5" blade Underreamer to ream & backream hole between 9404' to 9467' MD. POOH with underreamer. RIH w/memory tools to tag bottom at 9464' MD, then took surveys up to 9394' MD. POOH w/memory survey tools. Survey showed reentry into old wellbore. RIH w/3.5" milling assembly w/2.25" motor. 7~24~94: Ran milling assembly to 9461' MD. POOH w/milling tools, then RIH w/cementing nozzle & pumped in a cement plug to 9390' MD. POOH & waited 14 hours on cement. RIH w/3.75" ND bit w/3.5" motor, & drilled cement plug to 9415' MD. POOH w/BHA. MU & RIH w/drilling BHA w/3.75" PDC bit. Drilled from 9415' to 9476' MD. POOH w/BHA to replace orienting tools. Survey showed 60.3 degrees at 9453' MD. 7125/94: RIH w/drilling BHA w/3.75" PDC bit. Drilled from 9476' to 9491' MD. Took survey at 9470' MD; showed angle at 64.3 degrees. POOH w/tools. RIH w/memory survey to tag bottom at 9494' MD, then surveyed up at 5' intervals. Survey showed BUR of 26'/100, indicating angle build to Iow to hit target. POOH w/survey tools. RIH w/cementing nozzle. 7~26~94: Tagged bottom at 9492' MD, then PU & pumped 5 bbls Class G Cement to plugback the hole from 9494' to 9417' MD. Pressured up to 500 psi & held for I hour. Contaminated cement & jetted out contaminated cement to 9412' MD. POOH w/CT & waited on cement 17 hours. MU & RIH w/drilling BHA w/3.75' PDC bit. Kicked off drilling from 9418' to 9468' MD. POOH w/BHA. RIH with memory survey tools. 7/27/94: Tagged bottom at 9474' MD then surveyed uphole to 9396' MD. POOH w/survey tools. Survey showed 45'/100 build rate. PU & RIH w/drilling BHA w/3.75" PDC bit. Drilled from 9474' to 9525' MD. Surveys while drilling showed 71 degrees at 9463' MD, 79.4 degrees at 9489' MD, & 83.2 degrees at 9500' MD. POOH w/BHA. MU & RIH w/memory MWD GR tool & tagged PBTD at 9527' MD. 7128194= Ran multishot memory survey from 9523' to 9396' MD. POOH w/survey tools. RIH w/SWS GR tools & ran from 9518' to 9180' MD for two passes. POOH w/GR tools. RIH w/jet swirl nozzle to 9518' MD & circulated out biozan to seawater. 7~29~94: Tagged PBTD, then swapped to pumping 221 bt31s Maraseal Gel & placed 210 bbls of Gel behind pipe at 2000 psi max squeeze pressure. POOH w/CT & waited 16 hours for Gel to set up. cont. 9-31A DESCRIPTION OF WORK COMPLETED PRE-COIL TUBING SIDETRACK CEMENT SQUEEZE 7/9/94: Tagged fill at 9377' MD. 711 2/94: RIH w/CT & jetted from 9377' to 9470' MD. Unable to work deeper w/nozzle. Located nozzle at 9350' MD & pumped 3 bbls of Neat Latex Acid Resistive Cement, followed by 5 bbls of Latex Acid Resistive Cement w/1% Polypropylene Fibers (BWOC). Pressured up to 1500 psi for 1 hour to squeeze cement. Rigged down. 7/1 6~94' RIH & tagged hard cement plug top in the 7" liner at 9370' MD. Left the lower wellbore cement squeezed for Coil Tubing Sidetracking of 9-31B. SEP 2 6 1994 oil & Gas cons. commissior~ Ar~chor~t~e 9-31B DESCRIPTION OF WORK COMPLETED COILED TUBING SIDETRACK DRILLING 7/30/94: RIH w/jet swirl nozzle & jetted Gel from the wellbore to TD. Tagged at 9522' MD. to FIo-Pro, then POOH w/CT. MU & RIH w/drilling BHA w/3.75" PDC bit. 9528' MD, but had problems orienting tools. Displaced well over Drilled from 9523' to 7/31/94: POOH w/BHA & replaced orienting sub. 9582' MD. RIH w/BHA w/new sub & drilled horizontal hole from 9524' to 8/1/94: Continued drilling from 9582' to 9590' MD. POOH w/BHA to fix broken motor. RIH w/drilling BHA w/3.75" PDC bit & drilled from 9593' to 9660' MD. Took survey showing angle drop to 85.5 degrees. 8/2194: POOH w/BHA. MU & RIH w/drilling BHA w/3.75" PDC bit. 9657' MD showed 86.6 degree angle. POOH w/BHA. Drilled 9660' to 9721' MD. Survey at 8/3/94: RIH w/multishot survey tools & surveyed up from 9721' to 9500' MD. POOH w/multishot; lost s_urvey. data due_to download problems. Changed out logging equipment & RIH w/multishot survey to PBTD at 9720' MD. Surveyed up from 9720' to 9495' MD. POOH w/survey BHA. ,,, 8/4/94: ~ ~' MU & RIH w/drilling BHA w/3.75" PDC bit. Could not orient tools properly & POOH w/BHA after several attempts. Reran BHA. POOH to fix MWD problems. Reran BHA to PBTD. 8/5/94: Drilled from 9717' to TD at 9763' MD. w/BHA. Survey data at 9708' MD showed 90.4 degree angle. POOH 8/6/94: RIH w/swirl nozzle. Set down at 9425' & washed down to 9485' MD w/2% KCl Slickwater. Unable to wash past 9485' MD; suspect collapsing hole problem. POOH w/CT & swapped well fluid over to Crude. Rigged down & released CT unit. Placed the well on test w/gas lift & obtained a valid welltest. Flow rates tested at 100 - 200 BOPD, w/6% Watercut, & 6200 GOR. Plans to run a 2-7/8" liner in the openhole have been deferred for evaluation of production performance. RECEIVED SEP 2 6 1994 Alaska Oil & Gas Cons. Commission Anchore.¢~e %nadrill Schlumberger 21ient .... : PRUDHOE BAY DRILLING GROUP Field ..... : PRUDHOE BAY DRILL SITE 9 4ell ...... : DS09-31B COILED TUBING ,. 3ection at: '~.2.30 3ngineer..: gAMES TUNNELL Jnits ..... : FEET Computation...: KB Elevation..: Reference ..... : Magnetic Dcln.: 08/11/94 MINIMUM CURVATURE 59.18 ft JOB35203/AFE~3B0514 30. 200 E .kAS INCLN DIRECTION DEPTH ANGLE AZIMUTH 9394 49.15 32.30 9408 49.25 32.30 9413 49.00 30.10 9418 49.80 31.20 9423 50.50 31.50 RECORD OF SURVEY (Calculated from a tie-in station at 9394 MD) VERTICAL-DEPTHS SECTION RELATIVE-COORDINATES BKB SUB-SEA DISTNCE FROM-WELL-HEAD 8989.2 8930.0 435.7 1164.3 N 1026.4 W 8998.3 8939.1 446.3 1173.3 N 1020.8 W 9001.6 8942.4 450.0 1176.5 N 1018.8 W 9004.8 8945.7 453.8 1179.8 N 1016.9 W 9008.1 8948.9 457.7 1183.0 N 1014.9 W Pg: 1 CLOSURE DL DISTNCE AZIMUTH /100 1552.2 318.60 1.28 1555.2 318.98 0.71 1556.3 319.11 33.64 1557.5 319.24 23.13 1558.7 319.37 14.74 2 9428 51.70 31.40 9011.2 8952.0 461.6 1186.4 N 1012.9 W 2 9433 52.90 32.00 9014.2 8955.1 465.5 1189.7 N 1010.8 W 2 9438 54.50 31.20 9017.2 8958.0 469.5 1193.2 N 1008.7 W 2 9443 55.90 30.90 9020.1 8960.9 473.7 1196.7 N 1006.5 W 2 9448 57.50 31.20 9022.8 8963.6 477.8 1200.3 N 1004.4 W 1559.9 319.51 24.05 1561.1 319.65 25.81 1562.4 319.79 34.50 1563.7 319.93 28.43 1565.1 320.08 32.39 2 9453 58.10 31.80 9025.5 8966.3 482.1 1203.9 N 1002.2 W 2 ?~458 60.30 31.20 9028.0 8968.9 486.4 1207.5 N 999.9 W 2 9463 61.80 31.10 9030.5 8971.3 490.7 1211.3 N 997.7 W 2 9468 63.20 34.20 9032.8 8973.6 495.2 1215.0 N 995.3 W 2 9473 64.60 30.60 9035.0 8975.8 499.7 1218.8 N 992.9 W 1566.4 320.22 15.72 1567.8 320.37 45.19 1569.2 320.52 30.05 1570.6 320.68 61.71 1572.0 320.83 70.46 2 9478 66.10 29.20 9037.0 8977.9 504.2 1222.7 N 990.6 W 2 9483 67.30 28.60 9039.0 8979.8 508.8 1226.8 N 988.4 W 2 9488 68.80 31.00 9040.9 8981.7 513.4 1230.8 N 986.1 W 2 9492 70.10 31.30 9042.3 8983.1 517.2 1234.0 N 984.2 W ^Station Types: 2/MULTI SHOT J/PROJECTED ***Grid and magnetic corrections have been applied to these surveys*** (AnadrJ] (c)94 0931B2 B1.52 8:51 AM 1) MULTI-SHOT OF SECOND HOLE 1573.7 320.99 39.34 1575.4 321.14 26.41 1577'.1 321.30 53.68 1578.4 321.43 33.25 RECEIVED OCT - 4- 1994 '~ ..... "~ 0il & Gas Oons. Commission Anadri[l Schlumberger 08/10/94 Client .... : PRUDHOE BAY DRILLING GROUP Field ..... : PRUDHOE BAY DRILL SIT~ 9 Well ...... : DS09-31B COILED TUBING Section at:~[32.30 Engineer.. :~fJAMES TUNNELL Units ..... : FEET Computation...: Survey Date...: KB Elevation..: Reference ..... : Magnetic Dcln.: MINIMUM CURVATURE 08/10/94 59.18 ft JOB35203/AFE~3B0514 30. 200 E S )EAS INCLN DIRECTION C OEPTH ANGLE AZIMUTH J 9394 49.15 32.30 3 9407 49.15 32.30 3 9426 50.40 32.30 3 9433 53 . 80 30 . 60 3 9445 56.40 29.20 (Calculated RECORD OF SURVEY from a tie-in station at 9394 MD) VERTICAL-DEPTHS BKB SUB-SEA SECTION DISTNCE RELATIVE-COORDINATES FROM-WELL-HEAD 8989.2 8930.0 435.7 1164.3 N 1026.4 W 8997.7 8938.5 445.5 1172.6 N 1021.2 W 9009.9 8950.8 460.0 1184.9 N 1013.4 W 9014.2 8955.1 465.5 1189.6 N 1010.6 W 9021.1 8961.9 475.4 1198.1 N 1005.7 W Pg: 1 CLOSURE DL DIS~NCE AZIMUTH /100 1552.2 318.60 1.28 1554.9 318.95 0.00 1559.2 319.46 6.58 1560.9 319.65 52.21 1564.2 319.99 23.68 3 9453 60.30 29.20 9025.3 8966.1 482.2 1204.1 N 1002.3 W 3 9470 64.30 28.90 9033.2 8974.0 497.2 1217.2 N 995.0 W X 9491 64.30 28.90 9042.3 8983.1 516.1 1233.8 N 985.9 W 1566.7 320.22 48.75 1572.2 320.74 23.58 1579.3 321.37 0.00 ^Station Types: 3/MWD J/PROJECTED X/EXTRAPOLATED ***Grid and magnetic corrections have been applied to these surveys*** (Anadril (c)94 0931B2 B1.52 4:50 PM 2) MWD OF SECOND HOLE REC[IV D OCT - 4 '1994 ~.~t~sl~ (iii & Gas Cons. Commission Anchomde JUN ~4 '04 0:50 FROM PD ARCO Alaska, GPO ENO TO AOGCC PAGE,OOl &TO 1529 FAX NUMBER: 907/265-i336 Facstmlie Transmission p,o. Box 100360 Anchorage, Alaska gg610 IN'RUCTIONS: 1) Number ~ 2) Flem=w Step~ 3) Ua~ Only Black Ink 4) UIe Only ~r~~ ~ 'DATE II I1_ LOCATION/R(X~ OOMPANY . .m RECEIVED JUN 2.4 1994 This f~ rrmhine is not ~ordJnuously =tte, r~ If you send a fax and want it ~ up when received, ~i ~ ~ recipient or his/t~ Iilt{~m/. Telex 090-25122 ARCO Alaska AHG I~jal Surface ...... : 1587 FSL 998 Tie-/n/KeV .... ~ 2~5t ~L 2024 ~ar~e~ ....... : 28S3 ~ ~979 100.5~ 1.0180 89.73 10200 89.09 10380 85.45 10400 10SDO 6'7,L6 kma~ill Schlumberger A~aska District 1Lll R~t 80th A~nue ~~O, ~ 99518 (907} 3~9-4~ll Fax 349-2487 DTRECTIONI~ N~LL ~ [or t~RIK)HOE P~%Y DREFJ.ZNG G~OU-P LOCA~O~B - Pd~ASKA ~one: 4 B02 T1ON RISE ~ 7%7~76, ~9 ~943026,83 SO2 ~ RISE ~ 716440.41 5~5300.34 P~OPOSED ~ PR-3FII~ AZI~ BKB ~JB-S DIST 14.09 9039 8979 1131 6.42 9046 ~8~ 11~8 6.42 9046 898~ 1~88 6.42 9046 898~ i730 6.42 904~ 8988 ~830 6,42 90~9 8990 1930 RECEIVED JUN 24 1994 alaska 0il & 6as Cons. Commissio. Anchorage 1168,21 ~ 1024,04 W .72 7163~. 89 59~802,35 LS 0.00 18~4.94 N 921.01 ~ 7~6402.40 59~84,~.35 [~ ~.64 1944.30 ~ ~0V. 83 ~ 716410 . 70 5944~4 3.99 .L~ 0,64 2043.65 N 898.65 M 716419.01 59~5043.62 ~ 0.64 21~2.97 ~ ~87;~9 W ~164,27 .' 31 '59~514~,2i LS 0.~4' 6.42 6.42 9057 8998 2130 2242.25 N 876.31 N ... 716435.61 5945242.77 716440.41 5945300,34 0.64 C) o ]) I o r- -u _-) 6) ITl · 1',3 ALASKA OIL AND GAS CONSERVATION COM~ilSSION WALTER J. HICKEL, GOVERNOR 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 TELECOPY: (907) 276-7542 June 16, 1994 James L. Cawvey Engineering Supervisor ARCO Alaska, Inc. P O Box 100360 Anchorage, AK 99510-0360 Re: Prudhoe Bay Unit DS 9-31B ARCO Alaska, Inc. Permit No. 94-83 Sur. Loc. 1587'NSL, 998'WEL, Sec 2, T10N, R15E, UM Btmnhole Loc. 2751'NSL, ~'WEL, Sec 2, T10N, R15E, UM Dear Mr. Cawvey: Enclosed is the approved application for permit to redrill the above referenced well. The permit to redrill does not exempt you from obtaining additional permits required by law from other governmental agencies, and does not authorize conducting drilling operations until all other required permitting determinations are made. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25 035. Sufficient notice (approximately 24 hours) must be given to allow a representative of the Commission to witness a test of BOPE installed prior to drilling new hole. Notice may be given by contacting the Commission petroleum field inspector on the North Slope pager at 659-3607. David WJ Johnsto] Chairman BY ORDER OF THE COMMISSION dlf/Enclosures cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA ALASr,;A OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 AAC 25.0O5 la. Type of Work Drill _ Redrill X lb. Type of Well Exploratory~ Slratigraphic Test . Development Oil .~. Re-Entry__ Deepen _ Service _ Development Gas __ Single Zone ~ Multiple Zone _ 2.. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool ARCO Alaska, Inc. RKB 50' 3. Address 6. Property Designation P. O. Box 100360, Anchoracje, AK 99510-0360 ADL 28327 Prudhoe Ba¥/Prudhoe Bay Oil 4. Location of well at surlace 7. Unit or property Name 11. Type Bond (see 20 AAC 25.025) 1587' NSL, 998' WEL, Sec 2, T10N, R15E, UM Prudhoe Bev Unit Statewide At top of productive interval 8. Well number Number 2526' NSL, 2187' WEL, Sec 2, T10N, R15E, UM 9-31B #U-630610 At total depth 9. Approximate spud date Amount NSL,~' WEL, Sec 2, T10N, R15E, UM July, 1994 $200,000 12. Distance to nearest 13. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) property line ADL 28324:2491 feet No Close Approach 2560 Acres 10000' MD / 8992' TVD 16. To be completed for deviated wells 17. Anticipated pressure (see 20 AAC 25.035(e)(2)) kickoff depth 9398' MD Maximum hole angle 90° Maximum surface 2100 psig At total depth (TVD1 3500 psig 18. Casing program Salting Deplh size Specification Top Bottom Quantity of cement Hole Casin~ Weic~ht Grade Couplin~ Len~lh MD TVD MD TVD (include sla~le data) 4-3/4" 2-7/8" 6.5 L-80 FL4S 500' 9398 8991 10000 9065 None 19. To be completed for Redrill, Re-entry, and Deepen Operations. Present well condition summary Total depth: measured 9526 feet Plugs (measured) true vertical 9071 feet Effective depth: measured 9407 feet Junk (measured true vertical 8997 feet Casing Length Size Cemented Measured depth True Vertical depth Structural Conductor 1 1 1' 2 0" 1800 sx Polyurethane 1 1 1' 1 1 1' Surface 2483' 13-3/8" 2500 sx CS 111/400 sx CS II 2533' 2533'E( EIVE[ Production 8355' 9-5/8' 500 sx CIG & 300 sx CS I 8405' 8374' - Liner 1 175' 7 ' 264 cuft Gl G 9394' 8989' J,i 14 1994 Pedoration depth: measured Open Hole: 9398 - 9525' ,:,,~, ~ka u,~ & Gas Cons. C0mr~ true vertical Open Hole: 8991 - 9070' Anchorage 20. Attachments Filing fee ~x Property plat __ BOP Sketch ~ Diveder Sketch_ Drilling program ~ Drilling fluid program __ Time vs depth plot _ Refraction analysis ~ Seabed raped _20 AAC 25.050 requirements _ 21. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed Titlle Date Commission Use Only Permit Number APl number Approval date See cover letter for ? ~'/- ~:~.~ 50- O,2..~' -' ~-, ~/,.~ ~'" ~ ~/~ -~-~' ~ "--~'C;'~'~''~ other recluirements · Conditions of approval Samples required .~Y e s .,~ N o Mud log required __ Y e s ,~.- N o Hydrogen sulfide measures~ Y e s '~. N o Directional survey required ,~_ Yes __ N o Required working pressure forBOPE ~2M; ..~ 3M' ~ 5M · ~ 10M' ~ 1 5M 3500 psi forCTU Other:Original Signed By David W. Johnston by order of Approved by Commissioner the commission Date ~/f~::~ cr ssion Form 10-401 Rev. 7-24-89 ~mit in triplicale To: Bob Crandell (AOGCC) Re: 9-31B PERMIT TO DRILL Per our 6/14/94 phone conversation, I have attached in triplicate, the additional attachments requested (Plan & Vertical Section Views for CT Drilling on DS 9-3 lB), to be included with the 9-3 lB PERMIT TO DRILL which was received by your office earlier this month. Regarding the 1-07^ PERMIT, I will locate & send the plan & vertical view attachments ASAP. Sincerely, /John W. Peirce 6/15/94 RECEIVED dUN ] 6 1994 .aiaska Oil & Gas Cons. Commission Anchorage ... CLOSURE ..... : DECLINATION.: SCALE ....... : DRAWN ....... : TUBING (P3) PLAN VIEW 24§9 feet at Azimuth 339,28 30.200 E f inch : 400 feet 06/10/94 I ii i i i ~nadrY J/ SchYumD~rg~r . i mil i ...... __ ,, = , I , i ; , -~ ·, .,. . --T99 ~ '-. JUt 16 ' '" I Anchorag. .... ;--- i ...... ~ ....... ( ....... ! ......... ~ .......... F .,. · ~ I ) ..... ~ .._ .~. ._. )VEST- E&ST -> JUN 10 '94 13:41 TOTAL F', 04 90? 349 2487 PAGE,004 [_- 'PRUDFJOE B ' "DPt' :LLING'-GROup - : ~3 I II II III I Harker l(le,t J fication lIE-TN / ..... I^flGET ..... END OF 8UILO ND BKB SE¢I~ INCL~ ~394 8989 1042 49.)5 gS§B 9046 lIB8 90.00 9556 9~46 ~188 ]0558 9060 2188 88.79 i i · iii LI ~. · II Il I AnadrY ] ]Schlumberger m i ii i LJmlm I ii I illllll_~, i _ _ Dsog-31B COILED TUBING [P3) VERTICAL SECTION VIEN Sectio~ at: 6.42 TVD Scale,' 1 inch: 200 feet Dep Scale,' ) inch = 200 feet Drawn - 06/10/94 600 700 800 gdo JOOO itO0 1Z:R)O 2300 t400 1500 1600 1700 1800 )90~ EO00 2100 2200 23~0 2400 (~,na~lr. ilI Ic19:t O9.'I1FICT3 8),~ J'42 P,q t) Sect ion Depart,u, re .... i m ] i i mm -' ! , PR~DHO, F-BAY DRI ~L:I:NG rqOUP' . . . ! · _ __ iii i · i i i ~4arker IOefltzf ication MD N/S ~1 ~-~., ~op ~ ~ ~o~ DSOB-31B COILED TUBING CLOSURE ' 24~9 feet at ~zimuth D~CLINATION.' 30.200 ~ SCALE ' ] inch = 400 feet DRAWN · 06/10/94 ............. . ~ ~--" ,. .__~ m ' ' ' ' i " ' ! , .. , ,, .' . ~ ~ " , ~ ........ ~ ~ ....... . , ~, ~ .,, , " ~ " ' R ....... ~ ''- ~.,~¢.~,.~¢ ',-.--'~-- Oil & ~as Oo,s.!Oommis on ~ ~ ', ' , l,nchorage ............ " -- ~ .... t ...... ' m r m m m~ ,, ~ ~ ,, ~ ..... ~ "- " " r 3) .28 TOTRL P. 84 JUN 10 '..94 13:4! 907 34:3 2487 PRGE,004 £0 ' 'PRUDHOE BA'¥" DRILLIN6 6RouP i ,,, i,iii -- il , ,,, ,llJl .... ii i i iii -! i '- i i i ! ii Had<er l(le~t i ! ~cat ~on MO 8K~ SEClt~ INCL)I ~,] lIE-IN / KOP 9394 8989 1042 49.{5 BI ..... IBi4OET ..... §558 9046 {188 90.00 C) END OF BULL{) 9558 9046 i188 9q].O0 I)t ]1) {0558 9060 2i88 1t6.79 B .4nadr'i ] ] Schlumberger' DSO9-3iB COILED TUBING VERTICAL SECfION VIEN Sec[ion at: 6.42 T¥O Scale ' ] incIm = 200 feet Be{) Scale ' I inch = 200 feet Dra.n - 06/10/94 I ~ " { ......... i ' I · 1 · Il, i ......... ! ............. ~_q~ ....................... , t % ~ ~, { I , ~ ~ i I ~ ~I : ................ ~ ...............~ -"- ............ ~ .... ' W :. , ...... ~ L I '- ' .... ................ ~ ........................................................................... ~ ........ ~ .................... ........................ j / . I ~ : ~ ' ,, : , ' ~ [0,.., , ~. ~ + I I ! I _ __ i ............................... ~ GO0 YO0 BOO 900 lO00 ~t00 1~0 1300 i400 1500 1600 {700 tSO0 {900 ~000 2100 8800 2300 ~400 Sect ion De~ectuce ii i i Illl , I II 11111 I _ · I II I I I I DS 9-3 lB CT Sidetrack and Completion Intended Procedure OBJECTIVE: Cement squeeze the the open hole. Test squeeze. Directionally drill approximately 500' MD of formation out of the bottom of the 7" liner. Run pre- perforated 2-7/8" liner in the open hole as necessary. INTENDED PROCEDURE: Rig up cementing equipment and cement squeeze the open hole, leaving the cement top at + 9390' MD. 2. Rig up CTU, manifold, and lines. Nipple up BOP's and test. . CTU directionally drill +500' of horizontal section with MWD logging for GR and directional survey. Well will be drilled underbalanced by gas lifting while using 9.0 ppg ProFlo (XanVis) fluid. . Spot Lithium Hypochlorite (bleach) in open hole. Let soak for 2 hours. Displace open hole with 2% KC1. POOH , Run 2 7/8" preperforated and plugged liner with a 4-1/2" GS FN. Top of 2-7/8" liner will be in the 7" x 4 1/2" casing shoe. . POOH and MU nozzle on CT. Lay in acid across liner. Allow to soak for 20 minutes. 7. POOH and RD CTU. 8. Put well on production. Run SSSV. RECEIVED ,J[Jq 1 4 '1994 anchora~a DS 9-31 B CT Sidetrack Horizontal 4-1/Z" Tubing 7" Liner Top 8241' II X Nipple 8757' Packer 8774' SWS Nipple 8832' Tbg Tail 8843' Pkr @ 9Z70' ELM SWS Nipple 9Z83' Tbg' Tail 9Z89' Top of 4-1/2" Shoe @ 9359' 7"x 4-1/2" Conc. Shoe 9398' 9-5/8" Casing Window @ 8400 - 8450' top of 2-7/8" Liner in 4-1/2" Shoe Jt. 4-3/4" Underreamed tpen hole -7/8" Pre-perfed Liner 400 to 500' Gas to well Flowline Optional Trico Skid I.~RetL nsI Pressure Release / Line I Fire Ext. Locations of equipment may be switched if easier to rig-up Trico HP Relief Tank 1502 3" Hardline Standby Equipment SMUaCnti~3o%Centrlfugal~ Pum~ Fire Ext. 300 Bbls 60/40 Suction Manifold Hammer Ups Flan, Flanged Fire Resistant Kelly Hose / Optional Pump Tie-In/ Dual Choke Manifold w/Bypass Flanged Fire Res. Hose Hammer ip~"~ .~oiled Tubing Unit ----- C.T. Pump Tool Racks Fire I Ext. I Trplxi I 60~40 "~'::': .............. '"'="':" ....................... ::,:: ........ I BOPE I i I IBOPEI '""1 Console I Dowell/Anadrill DrillingEquipment Trailer Preferred Major Equipment Layout for CT Drilling in DS 9-31B Drilling Wellhead Detail ~ CT Injector Head Methanol Injection Otis 7" WLA Quick Connect ~ 4-1/16" ID CT BOP Stack ~ 10,I:X)O psi Working Pressure ~~~L__~ Stuffing Box (Pack-Off), 10,000 psi Working Pressure -- 7" R~ser I Pump-In ~ Blind Rams or Combination Cutter/Blinds Cutters or Combination Cutter/Blinds Slip rams Pipe rams Flanged Fire Resistant Kelly Hose To Dual ChokeManifold Flanged Flange Optional m / / Manual Valve HCR ' (28-) 2.0' (24") Tesl Gauge 1.67' (20") Approximate top of Wellhouas Optional: Space with spool pieces or valves to top of wellhouse as shown Alignment Guide Flange Optionally Made-up During Drilling 6"-8" Line To Plant Annular BOP (Hydril), 5-1/8" ID ~ 5,000 psi working pressure 3.167' (38") / 0.29' (3.5") ~ Ram Type Dual Gate BOPE ~ Nlanual over Hydraulic 7-1/16" ID with Pipe/Slip Rams Manual Valves 5.75' (69") 1 1.427' (17-1/8") 0.458' (5.5") t 5.604' (67.25") lop of Pad koYal 0 Mandatory SSV -..- Optional Manual Master Valve or Hydraulic SSV (24.5" for SSV) ~,Tubing Hanger Fire Resistant Kelly Hose to Flange by Hammer Up 1/4 Turn Valve on DS Hardline 10' from Tree 9-5/8" Annulus RECEIVEC; JUN 1,!- 199 13-3/8" Annulus h!~.s,,a (.iii & 6as Ccrls. Corr~rnissior', Anchorage STATE OF ALASKA ALASKA ~'L AND GAS CONSERVATION CO'.~"/IISSION APPLICA-, iON FOR SUNDRY AP,-ROVALS 1. Type of Request: Abandon X Suspend Operation shutdown Re-enter suspended well Alter casing Repair well Plugging ~ Time extension Stimulate Change approved program Pull tubing Vadance Perforate 2. Name of Operator ARCO Alaska~ Inc. 3. Address P.O. Box 100360, Anchorage, AK 99510-0360 5. Type of Well Development Exploratory Stratigraphic Service 4. Location of well at surface 1587' FSL, 988' FEL, Sec. 2, T10N, R15E, UM At top of productive interval 2526' NSL, 2187' WEL, Sec. 2, T10N, R15E, UM At effective depth At total depth 2751' NSL, 2023' WEL, Sec. 2, T10N, R15E, UM RECEIVED JUN 1 4 1994 Alaska 0ii & Gas Cons. Commission Anchorage I~ther 6. Datum of elevation(DF or KB) 54 RKB feet 7. Unit or Property Prudhoe Bay Unit 8. Well number 9-31A 9. Permit number 93-53 10. APl number 50 - 029-21396-01 11. Field/Pool Prudhoe Bay Oil Pool 12. Present well condition summary Total depth: measured true vertical 9452' feet Plugs(measured) 9139 feet Effective depth: measured 9407 feet true vertical 8997 feet junk(measured) Casing Length Size Cemented Conductor 111' 20" 1800 # Polyurethane Surface 2483' 13-3/8" 2500 sx CS III & 400 sx CS II Production 8355' 9-5/8" 500 sx CIG & 300 sx CS I Liner 1175' 7" 246 cuft CIG Measured depth 111' 2533' 8405' 9394' True ve~icaldepth 111' 2533' 8374' 8989' Perforation depth: measured Open Hole: 9398-9525' true vertical Open Hole: 8991-9070' Tubing (size, grade, and measured depth) 4-1/2", 12.6~, 13 CR, NSCT w/Tail @ 9289' MD RECEIVED JUN 1 4 1994 A,~sska 0ii & Gas Cons. C0mmissi0 Anchorage Packers and SSSV (type and measured depth) Baker SABL-3 @ 8774' MD, Camco TRCF-4A SSSV @ 2096' MD 13. Attachments Description summary of proposal X Detailed operations program 15. Status of well classification as: BOP sketch X 14. Estimated date for commencing operation July, 1994 16. If proposal was verbally approved Oil X Gas Name of approver Date approved Service 17. I herf,)by certify that the foregoing is true and correct to the bes of my knowledge. Signed~X,..._~¥...z.~__.~ ~ Title Engineering Supervisor FOR COMMISSION USE ONLY ConditionsUof approval: Notify~Gemrn~sion so representative may witness Plug integrity BOP Test Location clearance Mechanical Integrity Test Subsequent form required 10- Suspended I Approval No~:;~.~_ Approved by order of the Commissioner Commissioner Form 10-403 Rev 06/15/88 1114/9 SLW cc: JED, JWP SUBMIT IN TRIPLICATE WELL PERMIT CHECKLIST COMPANY PROGRAM: exp [] dev~ redrn,,~[ serv [] ADMINISTRATION APPR DATE 1. Permit fee attached .................. ~Y/ N 2. Lease number appropriate ............... ~t,,'~ N 3. Unique well name and number .............. ~ N 4. Well located in a defined pool ............. .~ N 5. Well located proper distance from drlg unit boundary..~ N 6. Well located proper distance from other wells ..... ~ N ' 7. Sufficient acreage available in drilling unit ..... ~ N 8. If deviated, is wellbore plat included ......... Y N ~ 9. Operator only affected party .............. ~ N 10. Operator has appropriate bond in force ......... ~ N 11. Permit can be issued without conservation order .... ~ N 12. Permit can be issued without administrative approval. -'~L~_ N 13. Can permit be approved before 15-day wait ....... ~ N ENGINEERING 14. Conductor string provided ................ Y N 15. Surface casing protects ail known USDWs ......... Y N 16. CMT vol adequate to circulate on conductor & surf csg.. Y Nf 17. CMT vol adequate to tie-in long string to surf csg . . . Y ~ ~ ~ ~ ~ ' . ' /~__~ 18. CMT will cover all known productive horizons ....... Y 19. Casing designs adequate for C, T, B & permafrost ..... 20. Adequate tankage or reserve pit ............. ~ N 21. If a re-drill, has a 10-403 for abndnmnt been approved. $ N 22. Adequate wellbore separation proposed .......... 23. If diverter required, is it adequate ........... 24. Drilling fluid program schematic & equip list adequate .~ N 25. BOPEs adequate .................... .~. N 26. BOPE press rating adequate; test to ~~ psig N 27. Choke manifold complies w/~I ~-53 (May 84) ....... ~---N~ 28. Work will occur without operation shutdown ....... ~ N 29. Is presence of H2S gas probable ............. Y GEOLOGY APPR 30. Permit can be issued w/o hydrogen sulfide measures .... Y 31. Data presented on potential overpressure zones ..... 32. Seismic analysis 9f shallow gas zones ......... 33. Seabed condition survey (if off-shore) ....... /. Y N 34. Contact name/phone for weekly progress reports . . /.. Y N [exploratory only] GEOLOGY: ENGINEERING: COMMISSION: Comments/Instructions: Z HOW/jo - A:~FORMS~.cheklist rev 03/94