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Home My WebLink About191-040 ON OR BEFORE 0 No EMBER 2 200 c:~O~M.n°c PLUGGING & LOCATION CLEARANCE REPORT State of Alaska .ALASKA 0IL & GAS CONSERVATION COMMISSION · · . Memorandum To File: APi No. Well Name Operator Note casing size, wt, depth, cmt vol, & procedure. .~ ~,~, .~ o 14 ,-¢o ' I/O/ Perf intervals - tops Review the well file, and' comment on plugging, well head status, and location clearance - provide loc. clear, code. ~,:,.,.,~,,.-~__. ]~773 ,/ /J~xx C~ & Well hea~ cut off: i ~1~ .- Marker 'post or plate: Location Clearance: Conclusions: Code o ~'-" STATE OF ALASKA --" Plugged Back for Sidetrack ALASK~ OIL AND GAS CONSERVATION CO~viMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG i. Status of Well ........................ Classification of 'Service Well .......... [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number BP Exploration (Alaska) Inc. 91-40 96-074 3. Add'~'~'Ss ......................................... 8. APl Number P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-22148 4. Location of well at surface '~--'--~i~W~.~' 9. Unit or Lease Name 2260' NSL, 2019' EWL, SEC. 31, T11N, R13E "~ "~'"'~%: ~ i'~~ Prudhoe Bay Unit At top of productive interval i~ ~' ........ '~'~ 10. Well Number N/A, ;~ :' ~',-,;~t~ P-21 At total depth :~~~ 11. Field and Pool 2319' SNL, 3505' WEL, SEC. 12, T10N, R12E:~~-~ Prudhoe Bay Field / Prudhoe Bay ,~. Elevation in feet (indicate KB, DF, etc.) ]6. Lease Designation and Serial No. Pool KBE = 92.4'] ADL 028265 ,12. Date Spudded ]13. Date T.D. Reached I 14. Date Comp., Susp., or Aband.115. Water depth, if offshore 116. No. of Completions 03/20/91 04/22/91 04/23/96 ..... N/A MS LI Zero · 17. Total Depth (MD+TVD) 118. Plug Back De'~'~h (MD+TVD)I19. Directional Surveyl20. Depth where SSSV set,_1. Thi'ck~ess of Permaffosl 15173 9172 FTI 14096 8639 ...... .F..Ti .............. []Yes []No I ...... N/A MD| 1900' (Approx.) 221 Type Electric or Other Logs Run ................... MWD 23. CASING, LINER AND CEMENTING RECORD ........ ~ASiNG .... ,~'~TTiNG DEPTH ..... HOLE ............................................ SIZE WT. PER FT. GRADE TOP BOTTOM SIZE CEMENTING RECORD AMOUNT PULLED 20" 91.65# H-40 Surface 110' 30" 280 cuft Arctic Set (Approx.) 13-3/8" 68# NT-80 38' 2997' 17-1/2" 4217 cuft Permafrost 9'5/8" 4~# .............. ~'SCC 37' 1'4621' 12-1/4" 3025 cuft Class'G' '"' ,, 24. Perforations open to Production (MD+TVD of Top an'd Bottom 25. TUBING RECORD and interval, size and number) .......... SIZE DEPTH SET (MD) PACKER SET (MD) None None None MD TVD MD TVD i26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 15173' - 14773' 13'4 SX Class 'G' .... 14773' - 14373' 134 sx Class 'G' 14496' - 14114' 134 sx Class 'G', E-Line Tagged TOC 27. PRODUCTION TEST Date First Production IM'ethod of OperatiOn (Flowing, gas lift, etc.) ........................... Not On Production I .... N/A Date of TeSt Hours Tested PRODUCTION FOR 0'I'L-BBL "G~S-'MCF wAI'ER-BBL CHOKE SIZE I GAS-O~'L RATIo TEST PERIOD I~ I Flow Tubing Casing Pressure CALCULATED ~ OIL-BBL GAS-MCF WATER-BBL OIL GRAViTY-APl (CORR) Press. ;)4-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. ORIGINAL RECEIVED MAY 3 1 1996 Alaska 0tl & Sa~ Con;. Commission Form 10-407 Rev. 07-01-80 Submit In Duplicate '~' Geologic Marks._ 30. Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids recovered Marker Name Depth Depth and gravity, GOR, and time of each phase. ..... Sag River 14601' 8790' Shublik 14635' 8807' Top of Sadlerochit 14842' 8912' 3ii List of Attachments .................................................... Summary of Daily Drilling Reports 32. I hereby certify that th~going i;,~t~'u_e an~correct to the best of my knowledge ~ ~'l~lff~ Signed// ///// /.~ ~///~//~ DanStoltz X/~/' ~ Title Senior Drilling Engineer Date /""' Prepared By Name/Number Terrie Hubble, 564-4628 INSTRUCTIONS GENERAL: This form is designed for submitting a complete and correct well completion report and Icg 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 cementing and the location of the cementing tool. ITEM 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, Other-explain. ITEM 28: If no cores taken, indicate 'none'. RECEIVED MAY ;5 1 1996 Form 10-407 Rev. 07-01-80 Alaska 0tl & Gas Cons. Commission Anchorage SUMMARY OF DALLY OPERATIONS SHARED SERVICES DRILLING - BPX / ARCO Well Name: P-21 A Rig Name: Nabors 18E AFE: 4 P0810 Accept Date: 04/21/96 Spud Date: 04/24/96 Release Date: 05/03/96 Apr 20 1996 (1) Rigged down Drillfloor/Derrick. Held safety meeting. Rigged down Drillfloor / Derrick. Rig moved 100 %. Rigged up Drillfloor / Derrick. Apr 21 1996 (2) Rigged up Drillfloor / Derrick. Rigged up Drillfloor / Derrick. Removed Xmas tree. Apr 22 1996 (3 ) Removed Xmas tree. Rigged up BOP stack. Tested BOP stack. Laid down 40 ft of Tubing. Installed Bore protector. Tested Kelly cocks. Made up BHA no. 1. R.I.H. to 1878 ft. Circulated at 1878 ft. R.I.H. to 2300 ft. Circulated at 2300 ft. Apr 23 1996 (4) Circulated at 2300 ft. R.I.H. to 3000 ft. Serviced Block line. R.I.H. to 14114 ft. xx,x~j Circulated at 14114 ft. Tested Casing. Held drill (Kick (well kill)). Pulled out of hole to 0 ft. Set Permanent packer at 12426 ft with 0 psi. Pulled out of hole to 0 ft. Made up BHA no. 2. Apr 24 1996 (5 ) Made up BHA no. 2. R.I.H. to 12410 ft. Circulated at 12407 ft. Milled Casing at 12424 ft. Apr 25 1996 (6 ) Milled Casing at 12440 ft. Circulated at 12440 ft. Pulled out of hole to 250 ft. Pulled BHA. Circulated at 30 ft. Made up BHA no. 3. R.I.H. to 12390 ft. Drilled to 12643 ft. Pulled out of hole to 460 ft. Apr 26 1996 (7) Pulled BHA. Removed Bore protector. Made up BHA no. 4. R.I.H. to 3000 ft. Rigged up Block line. R.I.H. to 12390 ft. Drilled to 13440 ft. RECEIVED MAY J 1 1996 AImskm 011 & Gms Cons. Commission Anchorage Operations Summary for: .lA Apr 27 1996 (8) Drilled to 13651 ft. Pulled out of hole to 12581 ft. R.I.H. to 13641 ft. Drilled to 13839 ft. Took MWD survey at 13559 ft. Pulled out of hole to 646 ft. Pulled BHA. Made up BH^ no. 5 . R.I.H. to 12363 ft. Took MWD survey at 12363 ft. R.I.H. to 13829 ft. Apr 28 1996 (9) Drilled to 14676 ft. Worked toolstring at 14676 ft. Drilled to 14799 ft, Apr 29 1996 (10) Drilled to 14898 ft. Cimulated at 14898 ft. Drilled to 14918 ft. Cimulated at 14918 ft. Pulled out of hole to 13000 ft. R.I.H. to 14918 ft. Drilled to 15168 ft. Cimulated at 15168 ft. Pulled out of hole to 646 ft. Apr 30 1996 (11) Pulled BHA. Tested BOP stack. Made up BHA no. 6 . R.I.H. to 5000 ft. Serviced Block line. R.I.H. to 12390 ft. Circulated at 12390 ft. R.I.H. to 15168 ft. Drilled to 15356 ft. Circulated at 15356 ft. Pulled out of hole to 14390 ft. Circulated at 14390 ft. R.I.H, to 15314 ft. Drilled to 15400 ft. May I 1996 (12) Drilled to 15460 ft. Circulated at 15460 ft. Logged hole with LWD: Formation evaluation (FE) from 15430 ft to 15190 ft. Cimulated at 15190 ft. Pulled out of hole to 642 ft. Pulled BHA. Removed Bore protector. Ran HWDP to 500 ft (5 in OD). Laid down 500 ft of HWDP. R.I.H. to 15460 ft. Circulated at 15450 ft. Mixed and pumped slurry- 79 bbl. Displaced slurry- 240 bbl. Pulled Drillpipe in stands to 13685 ft. May 2 1996 (13) Circulated at 13865 ft. Pulled Drillpipe in stands to 12935 ft. Laid down 930 ft of Drillpipe. Ran Drillpipe to 12375 ft (5 in OD). Cimulated at 12375 ft. Ran Drillpipe in stands to 14597 ft. Circulated at 14597 ft. Laid down 1667 ft of Drillpipe. Circulated at 12930 ft. Laid down 330 ft of Drillpipe. Mixed and pumped slurry - 43 bbl. Pulled Drillpipe in stands to 11187 ft. Circulated at 11187 ft. Serviced Block line. Circulated at 11187 ft. May 3 1996 (14) Circulated at 11187 ft. Ran Drillpipe in stands to 12226 fi, Circulated at 12226 ft. Tested Casing - Via annulus. Laid down 10205 ft of Drillpipe. Circulated at 2021 ft. Laid down 2020 ft of Drillpipe. Ran Tubing to 61.13 ft (3.5 in OD). Tested Hanger plug. Rigged down BOP stack. May 4 1996 (15) Installed Xmas tree. Tested Adapter spool. Serviced Fluid system. Page 2 RECEIVED MAY 3 1 1996 Alaska 0tl & ~as Con~, Commission Anchorage STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon /~, ~ Suspend __ Operation Shutdown__ Re-enter suspended well __ Alter casing __ Repair well __ Plugging __ Time extension __ Stimulate __ Change approved program __ Pull tubing Variance __ Perforate __ Other x Plugback for Sidetrack 2. Name of Operator 5. Type of Well: 6. Datum elevation (DF or KB) BP Exploration Development x KBE =92.4' feet Exploratory __ 3. Address Stratigraphic__ 7, Unit or Property name P. O. Box 196612, Anchorage, Alaska 99519-6612 Service__ Prudhoe Bay Unit 4. Location of well at surface 8. Well number 3019' SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval N/A At effective depth N/A At total depth 2319' SNL, 3505' WEL, SEC. 12, TION, R12E P-21 (22-12-10-12) 9. Permit number 91-40 10. APl number 50- 029-22148 11. Field/Pool Prudhoe Bay Field/Oil Pool 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Length Structural Conductor 110' Surface 2967' Intermediate 14590' Production Liner Perforation depth: measured none 15173' feet Plugs (measured) 9172' feet BKB 14096 feet Junk (measured) 8639 feet Size Cemented 20' 280 cu fl Arctic Set 13-3/8" 4292 cuft Permafrost 9-5/8" 3315 cuft Class G true vertical none Tubing (size, grade, and measured depth) none Packers and SSSV (type and measured depth) none 15173'-14773' (134 sx);14773'-14373' (134 Sx) & 14496'-14096 (134 sx) Measured depth True vertical depth bkb 131' 131' 2997' 2670' 14619' 8891' RECEIVF. D A!~sl.'.a Oil & Gas Cot, s. 13. Attachments Description summary of proposal × Detailed operations program BOP sketch 14. Estimated date for commencing operation April5, 1996 16. If proposal was verbally approved Name of approver Date approved 15. Status of well classification as: Oil Gas Suspended x Service 17. I hereby~i~y that the ~:~'e~in~) ue and correct to the best of my knowledge. ( / Signed ,~'/~'~1 ~ Title SeniorDrillingEngineer - "-' 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- I Approval NO. Approved by order of the Commission Form 10-403 Rev 06/15/88 ~]aviri W. Jnhn,stnn C,® C m ' -6 o missioner Pate~----~-I/~ ~ SUBMIT IN TRIPLICATE P-21 Application for Sundry Change of Status The Application for Sundry for well P-21 is to change the status of the well from a "Training and Test Well" to a "Plugback for Sidetrack". The original well was drilled and suspended in April 1991. Cement plugs were spotted in the 8-1/2" open hole section from the Sag River through the Sadlerochit formations. A drill pipe tag located the top of cement at 14496' MD, 125' MD above the 9-5/8" casing shoe set at 14621' MD (Top of Sag River). An additional cement plug was set from 14496' MD to approximately 14096' MD. The cement plug was tested to 3000 psi for 15 minutes, however, a tag of the top of cement was never done. Below is the procedure to prepare for sidetrack well P-21A: 1. Test the 9-5/8" mandrel packoff to 5000 psi. . With an AOGCC representative on location to witness the operation, R/U E-line and tag the top of the cement to verify cement is at approximately 14,096' MD. 3. Freeze protect top 2200' MD with diesel. . Bleed tubing and annuli pressures to zero. Set i-VVC.i;n the tubing hanger and test from below to 1000 psi. Secure well. -, Remove the well house. If necessary, level the pad and dig out the cellar. PERMIT ~ACGCC Individual Well Geological Materials Inventory DATA T DATA_PLUS Page · 1 Da~ i " ~ ,, i 01/12/95 RUN DATE_RE CVD 91-040 4883 ,~T 14625-15173 ALL MWD LOGS I 05/21/91 91-040 91-040 91-040 91-040 91-040 407 ~ COMP DATE:05/06/91 DWOP ~R 03/20-04/14/91 SURVEY ,/R 0-14545 MWD TELECO SURVEY "/R 414-14545 MWD GREATLAND SURVEY ~ 0.00-15173 GCT SCHLUM. 91-040 DGR/CNP/SFD/CAL ~L 14625-15'173 1-2 DGR/EWR/FXE '4 14625-15173 91-040 1-2 07/30/93 0'7/30/93 05/21/91 05/21/91 05/21/91 05/21/91 05/21/91 91-040 DGR/EWR/FXE/CNP/jL 8731-9098... /SFD/CAL 1-2 05/21/91 Are dry ditch samples required? Was the well cored? yes ~<~ Analysis & description re~d? O Received?~ Are well tests required[%l yes Well is in compliance Initial COMMENTS yes ~ And received? ~ yes no STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown Stimulate Plugging Perforate . Pull tubing Alter casing Repair well Other x service-training/testing ~'~ 6. Datum elevation (DF or KB) 2. Name of Operator BP Exploration 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 3019' SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval N/A At effective depth N/A At total depth 2319' SNL, 3505' WEL, SEC. 12, TION, R12E 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical 5. Type of Well: Development X KBE =92.4' feet Exploratory Stratigraphic 7. Unit or Property name service Prudhoe Bay Unit 8. Well number P-21(22-12-10-12) 9. Permit number/approval number 91-40 10. APl number 5O- 029-22148 11. Field/Pool Prudhoe Bay Field/Oil Pool 15173' feet Plugs (measured) 9172' feet BKB n/a feet Junk (measured) feet 15173'- 14773' (134 sx); 14773'- 14373' (134 Sx) & 14496'-14096 (134 sx) Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: Length 80' 2967' 1459O' measured none Size Cemented 20' 13-3/8" 4292 cuft Permafrost 9-5/8" 3315 cu ft Class G Measured depth True vertical depth bkb 131' 131' 2997' 2670' 14620' 8892' true vertical none Tubing (size, grade, and measured depth) none Packers and SSSV (type and measured depth) none 13. Stimulation or cement squeeze summary Intervals treated (measured) A~chorage Treatment description including volumes used and final pressure 14. Prior to well operation Subsequent to operation Reoresentative Daily Average Production or Injection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure 15. Attachments 16. Status of well classification as: Copies of Logs and Surveys run Daily Report of Well Operations Oil Gas Suspended x 17. I hereby certify that the,f, orfgoing~ trt~and correct to the best of my knowledge. Signed ~i..~~ Title Drilling! Engineering Supervisor Form 10-404 Rev 06/15/88 Service SUBMIT IN DUPLICATE .2' .. RECEi V. ED ~.4A ~' 2 7 ~99t Alaska Off & Gas Cons. (.;ul~rnission Anchorage :/EWE DRILLING PRr, r~r:~ AM WELL BORE D!AGR, , WELL P-21 [22-1 2-1 0-1 2] ,o. 20" Conduclor One joint of 4-112" Tubing 110' 13-3/8" 68# NT-80 Butlress 4292 cu. ft. Permafrost 2997' 9-5/8" 47# NT-80S NSCC · Top of Cement .Plugs 14096' 9-518" CASING: 14620' 3315 cu.tt. Class G J U ~ ~ 0 ^iaska 0it & ua,~ Cons. Anchorago 8-112" Hole TD 15173' STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOUP LETION REPORT AND LOG 1. Status of Well Classification of Service Well OIL [] GAS I-1 SUSPENDED [] ABANDONED [] SERVICE [] Training_ & te~tipg well 2. Name of Operator 7. Permit Number BP Exploration ,,, ~ 91-40 3. Address Uj..~ICi~jjl~ i B. APINumber P. O. Box 196612, Anchorage, Alaska 99519-6612 5o-029-22148 4. Location of well at surface ' ' ' ~ ~ 9. Unil or Lease Name 2260' NSL, 2019' EWL, SEC. 31, T11N, R13~ ~.._I',~-'~ Prudhoe Bay Unit At Top Producing Interval N/A ~ 11. Field and Pool At Total Depth~..~ --~m~..~:----- j~ . Prudhoe Bay Field/Prudhoe Bay Pool 2319' SNL, 3505' WEL, SEC. 12, TION, R12E'~'"''''~'~ 5. Elevation in feet (indicate KB, DF, etc.) J6. Lease Designation and Sedal No. KBE 92.4' I ADL 28265 12. Date Spudded 13. Date T.D. Reached 14. Date Comp., Susp. or Aband. J15. Water Depth, il ollshore J16. No. of Completions 3/20/91 4/22/91 5/6/91I N/A feet MSL I Zero 17. Total Depth (MD+TVD) 18. Plug Back Depth (MD+TVD', 19. Directional Survey ~20. Depth where SSSV set ~21. Thickness of Permafrost 15173' MD/9172' TVD 14096' MD/8639' TVD YES [] NO []! None feet UD ! 1900'(Approx.) 22. Type Electric or Other Logs Run MWD 23. CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD CASING SIZE WT. PER FT. GRADE TOP BOTTOM HOLE SIZE CEMENTlqG RECORD AMOUNT PULLED 20" 91.65# H-40 Surface 110' 30" 2do cu f~ Ar~cset (Approx.) 13-3/8" 68# NT-80 38' 2997' 17-1/2" 4217cu ft Permafrost 9-5/8" 47# NSCC 37' 14621' 12-1/4" 3025 cuft Class "G" 24. Perforations open to Production (MD+TVD of Top and Bottom and 25. TUBING RECORD interval, size and number) SIZE DEPTH SET (MD) PACKER SET (MDt None None None 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 15173'-14773' 134 SX Class "G" 14773'-14373' 134 sx Class "G" 14496'-14096' 134 sx Class "G" Freeze protected w/150 bbls dry crude 27. PRODUCTION TEST Date First Production IMethod of Operation (Flowing, gas lift, etc.) Not on production I N/A Date of Test Hours Tested PRODUCTION FOR OIL-BBL GAS-MCF WATER-BBL CHOKESIZE ~GAS-OIL RATIO TEST PERIOD I~ Flow Tubing Casing Pressure CALCULATED~ OIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-APl (corr) Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, lractures, apparent dips, and presence of oil, gas or water. Submit core chips. Form 10-407 Submit in duplicate Rev. 7-1-80 CONTINUED ON REVERSE SIDE , 29. 30. GEOLOGIC MARKERS FORMATION TESTS NAME Include interval tested, pressure data, all fluids recovered and gravity, MEAS. DEPTH TRUE VERT. DEPTH GOR, and time of each phase. BKB Subsea Sag River 14601' 8790' Shublik 14635' 8807' Top Sadlerochit 14842' 8912' 31. LIST OF ATTACHMENTS ¢,, ,~,, ,i-,~ '*~4 o 32. I hereby cerlify lhat the foregoing is true and correct to lhe 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 elevation (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 BP/AAI SHARED SERVICE DAILY OPERATIONS PAGE: 1 WELL: P-21 BOROUGH: NORTH SLOPE UNIT: PRUDHOE BAY FIELD: PRUDHOE BAY LEASE: APl: 50- PERMIT: APPROVAL: ACCEPT: 03/20/91 01:00 SPUD: 03/20/91 09:45 RELEASE: OPERATION: DRLG RIG: Audi 2 WO/C RIG: Audi2 03/20/91 ( 1) MIRU Spud well @ 09:45 3/20. 03/21/91 drlg to 1078' 03/22/91 drlg to 2246', circ, w/I survey, trip for BHA & bit -ream f/2150'-2246', drlg f/2246'-2468' 03/23/91 drlg f/2468'-2688', c/o swivel pkg. drlg to 3020', p/u dp for stab in job, poh, r/u & rih w/13- 3/8" csg, r/u howco equip & rih. 03/24/91 rih w/howco stab in tool, circ dp capacity, test lines to 3000# & cmt 13-3/8", poh, cmt top job, r/u head & bop's & test & install wear ring, r/u BHA & rih to 2954', test csg to 3000#, drlg cmt & float equip. 2954'-3020'. drlg f/3020'-3030', run FIT using 9.2 ppg mud @ 2700' TVD, drlg f/3030'-3365'. 03/25/91 drl to 5369'. 03/26/91 drlg & survey to 7090'. 03/27/91 drlg to 7672'. 03/28/91 drlg to 9603'. 03/29/91 drlg to 10421' 03/30/91 drlg to 11150'. 03/31/91 drlg to 11831', test bop's & install wear ring, rih 04/01/91 unplug bead recovery unit, drlg w/l-deg, mtr & surveys 04/02/91 drlg & survey, lub rig, drlg. 04/03/91 drlg to 13404' 04/04/91 drlg to 14002', p/u steering tool assemb. 04/05/91 orient dy. dril, rih to shoe, repair hydromatic over riding clutch, serv. rig, drlg w/steering tool. 04/06/91 drlg to 14626', short trip, ream motor run f/14002'-bottom, circ hi-vis sweep, poh & work tight hole. 04/07/91 Poh to 9463'-tight hole, rih, circ hi-vis sweep, poh to hwdp, chg rams to 9-5/8", poh & I/d bha, pull wear ring, r/u & run 9-5/8" csg. 04/08/91 run 9-5/8" csg, circ & cmt, install & test packoff, install 5" rams & test bop's, chg brake pads, p/u bha & sperry sun mwd tools. 04/09/91 rih & tag cmt @ 14349', attempt to rotate, hi torque, drlg cmt to float collar @ 14501', test csg @ 3000# ok, drlg float equip. & 10' new hole, cbu, disp w/polyer-brine mud. 04/10/91 attempt to drill high torque, circ & add beads to system, drl to 14678', circ, lub rig, poh to p/u kelly, rih. 04/11/91 drlg to 15173', circ, circ & log w/MWD to 15173', circ, r/u to log - gyro. 04/12/91 rih w/dc's & hwdp, poh, r/u 15 jts 3-1/2" dp & plug catcher rih, circ @ 9-5/8" shoe, rih to 15173', wash last 10', test lines to 3000 psi, pump water, displace cmt, poh to 14773', cbu. r/u cmt head & pump #1 & 2 cmt plugs, poh, cbu. 04/13/91 test plugs, woc, test plugs - no test, p/u dp, rih, serv. rig, rih, p/u dp-tag plug @ 14496', circ. pump H20-test lines- pump plug #3. circ & WOC. 04/14/91 test cmt plug to 3000 psi, poh, displace upper 2000' w/diesel-150 bbls, poh, I/d dp, pull wear bushing, Ind tbg hgr w/1 jt tbg in spool- install 2-way check valve, n/d bop's, install adp. flange & test, inject waste fluid & freeze prot. 13-3/8" x 9-5/8" annulus, clean mud tanks & cellar. 0If ~61~4t SUB - S URFA CE DIRECTIONAL SURVEY r~ UIDANCE ~ ONTINUOUS ~ OOL RECEiVEb ;4lasl~aoil& Gas Cons. 'Anchorage Company BP EXPLORATION Well Name P-21 (22-12-10-12)) (2260' FSL, 2019' FWL~_SEC 31~. T11N, R13E) Field/Location PRUDHOE BAY, NORTH SLOPE, ALASKA Job Reference No. 7451O Locjqed By: PORTER ~ate ~ Date 12-APR-91 Computed By DEES I I I I III I I II II I I I II I I II I II II I I II I I * SCHLUMBERGER * GCT DIRECTIONAL SURVEY CUSTOMER LISTING FOR BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA SURVEY DATE: 12-APR-1991 ENGINEER: K. PORTER METHODS OF COMPUTATION TOOL LOCATION: INTERPOLATION: VERTICAL SECTION: TANGENTIAL- LINEAR HORIZ. DIST. Averaged deviation and azimuth PROJECTED ONTO A TARGET AZIMUTH OF SOUTH 28 DEG 40 MIN WEST COMPUTATION DATE: 19-APR-91 PAGE 1 BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA DATE OF SURVEY: 12-APR-1991 KELLY BUSHING ELEVATION: 92.40 FT ENGINEER: K. PORTER INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTh DEPTH DEPTH DEPTH DEG MIN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ, DEPARTURE SECTION SEVERITY NORTH/SOUTh EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 0 O0 100 O0 200 O0 300 O0 400 O0 500 O0 600 O0 700 oo 800 O0 900 O0 0 O0 100 O0 200 O0 299 99 399 99 499 98 599 90 699 54 798 73 897 39 -92 40 7 60 107 60 207 59 307 59 407 507 607 706 8o4 0 0 N 0 0 E 0 7 S 14 46 W 0 5 N 46 44 E 0 6 S 52 21W 0 19 S 33 17 W 58 1 26 S 31 12 W 50 3 32 S 27 36 W 14 6 6 S 19 4 ~,' 33 8 25 S 16 1 W 99 10 19 S 19 44 W 0 O0 0 11 0 15 0 17 0 51 1 82 5 86 14 13 26 55 42 50 0 O0 0 07 0 22 0 O0 0 40 1 36 2 10 3 22 2 19 2 02 0 O0 N 0 08 S 0 18 S 0 16 S 0 44 S 1 58 S 5 09 S 12 76 S 24 90 S 40 39 S 0 O0 E 0 07 W 0 03 E 0 05 W 0 26 W 0 89 w 291 W 6 12 W 9 14 0.00 N 0 0 E 0 11 S 41 5,4 W 0 19 S 9 12 E 0 17 S 17 50 w 0 51 S 29 59 W 1 82 S 29 19 w 5 86 S 29 ,44 w 14.15 S 25 38 w 81 W 26.76 S 21 30 W 72 W 42.99 S 20 1 W 1000 O0 1100 1200 1300 1400 1500 1600 1700 1800 1900 995.45 903.05 12 16 O0 1092.87 1000.47 14 17 O0 1189.21 1096.81 16 39 O0 1284.53 1192.13 18 27 O0 1378.68 1286.28 20 52 O0 1471.65 1379.25 22 21 O0 1563.45 1471.05 24 19 O0 1654.04 1561.64 25 46 O0 1743.39 1650.99 27 38 O0 1831.16 1738.76 29 43 S 21 46'W S 22 37 W S 24 11 W S 25 9 w S 26 13 w s 27 12 w S 25 31 w S 23 52 w S 23 17 w 338 S 22 48 w 385 61 89 84 31 110,96 141 12 174 76 211 56 251 17 293 40 10 79 1 45 3 47 2 17 201 1 84 1 8O 2 18 1 68 1 92 201 58.64 S 79.57 S 30 104.12 S 40 131.58 S 53 161.92 S 68 194.78 S 84 230.25 S 102 268.82 S 119 309.96 S 137 354.O8 S 156 21 76 W 62 55 S 20 21 W 21 W 85 12 S 20 47 W 87 W 111 85 S 21 26 W 50 W 142 04 S 22 7 W 13 W 175 67 S 22 49 W 76 W 212 42 S 23 31 W 42 W 252 01 S 23 59 W 92 W 294.35 S 24 2 W 86 W 339.24 S 23 59 W 56 W 387.15 S 23 51 W 2000 O0 1917 21 1824 81 31 19 2100 2200 2300 2400 2500 26OO 27O0 2800 2900 00_ 2002 O0 2085 O0 2167 O0 2248 O0 2327 O0 24O3 O0 2474 O0 2542 O0 2608 O4 1909 63 1993 62 2075 31 2155 57 2235 12 2310 07 2381 45 2450 22 2515 S 23 2 W 436 46 64 32 40 S 23 1 W 489 23 34 2 S 21 17 W 543 22 35 47 S 21 41 W 600 91 36 29 S 23 10 W 659 17 38 52 S 23 54 W 719 72 43 7 S 24 4 W 785 67 46 7 S 23 56 W 855 05 47 44 S 23 39 W 928 82 49 59 S 23 20 W 1003 17 68 45 16 88 14 36 06 07 1 24 1 52 1 62 1 72 1 70 3 33 4.29 1.52 2.46 2.01 401 01 S 176 36 W 438 07 S 23 44 W 449 5OO 553 6O8 664 724 788 855 924 68 S 197 57 S 217 86 S 238 50 S 261 35 S 285 16 S 312 54 S 340 31 S 370 39 S 400 21 W 491 77 W 545 62 W 6O3 07 W 662 51W 723 13 W 788 76 W 859 18 W 931 19 W 1007 02 S 23 41W 89 S 23 31W 08 S 23 18 W 14 S 23 13 W 10 S 23 15 W 57 S 23 19 W 02 S 23 22 W 98 S 23 24 W 30 S 23 25 W 3000 O0 2671 53 2579.13 51 16 3100 3200 3300 3400 3500 3600 37O0 3800 3900 O0 2733 .00 2794 O0 2854 O0 2915 O0 2976 O0 3037 O0 3099 O0 3160 O0 3222 46 2641.06 52 6 40 2702.00 52 51 88 2762.48 52 41 64 2823.24 52 28 59 2884.19 52 23 77 2945.37 52 15 10 3006.70 52 4 86 3068.46 51 42 93 3130.53 51 25 S 23 28 w 1080 14 S 23 37 w 1158 34 S 23 44 w 1237 33 S 23 49 w 1316 67 S 23 52 w 1395 82 S 23 51 w 1474 81 S 23 46 w 1553 63 S 23 42 w 1632 32 S 23 43 w 1710.68 S 23 49 w 1788 79 0 99 0 46 0 55 0 20 0 03 0 24 015 0 62 0 10 0 37 995 46 S 430 84 ~/ 1084 70 S 23 24 W 1067 44 S 462 1140 06 S 494 1212 93 S 526 1285 58 S 558 1358 08 S 590 1430 46 S 622 1502 78 S 653 1574.80 S 685 1646.57 S 717 21W 1163 04 W 1242 14 W 1322 26 W 1401 32 W 1480 23 W 1559 98 W 1638 59 W 1717 16 W 1795 21 S 23 25 W 5O S 23 26 W 13 S 23 27 W 56 S 23 28 W 83 S 23 3O W 93 S 23 31 W 92 S 23 31 W 57 S 23 32 W 97 S 23 32 W COMPUTATION DATE: 19-APR-91 PAGE 2 BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA DATE OF SURVEY: 12-APR-1991 KELLY BUSHING ELEVATION: 92.40 FT ENGINEER: K. PORTER INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTh FEET DEG/IO0 FEET FEET FEET DEG 4000 O0 3285.32 3192.92 51 19 4100 4200 4300 4400 4500 4600 4700 48OO 4900 O0 3348.31 3255.91 50 51 O0 3410.02 3317,62 53 11 O0 3467.92 3375 52 56 4 O0 3521.83 3429 43 58 28 O0 3573.97 3481 57 58 38 O0 3626.19 3533 79 58 23 O0 3678.80 3586 40 58 17 O0 3731.62 3639 22 58 7 O0 3784.49 3692 09 58 15 S 23 52 W 1866 67 S 23 48 w 1944 S 23 33 w 2022 S 23 18 w 2103 S 23 24 W 2187 S 23 43 w 2272 S 23 5O w 2357 S 23 53 W 2442 S 24 1 w 2526 S 24 t7 w 2611 O6 44 62 47 46 43 18 8O 41 0.39 0.61 3.16 2.89 1 .05 0.70 0.09 0.26 O.69 1 .06 1718 04 S 748 76 w 1874 12 S 23 33 w 1789 1861 1935 2013 2091 2169 2247 2324 2402 09 S 780 15 S 811 96 S 844 28 S 877 52 S 911 55 S 945 33 S 980 95S 1014 40 S 1049 15 W 1951 74 W 203O 12 W 2111 48 ~ 2196 54 W 2281 96 W 2366 34 W 2451 79 W 2536 51W 2621 79 S 23 34 W 47 S 23 34 W 98 S 23 34 W 20 S 23 33 W 53 S 23 33 W 81 S 23 33 W 85 S 23 34 W 76 S 23 35 W 64 S 23 36 W 5000 O0 3837.19 3744 79 58 2 5100 5200 5300 5400 5500 5600 5700 5800 5900 O0 3889.86 3797 O0 3941.93 3849 O0 3993.18 3900 O0 4044.45 3952 O0 4094.94 4002 O0 4144.54 4052 O0 4194.13 4101 O0 4243.19 4150 O0 4292.51 4200 46 58 31 53 58 42 78 59 15 05 59 16 54 60 11 14 6O 20 73 60 24 79 60 37 11 60 21 S 24 23 W 2696 16 S 24 19 W 2780 S 24 28 W 2866 S 24 41W 2951 S 24 39 W 3037 S 25 10 W 3123 S 25 17 W 3210 S 25 54 w 3296 S 26 3 W 3383 S 26 8 W 3470 92 06 70 36 48 15 86 91 81 0 O6 1 t 0 0 1 0 1 0 0 2479 83 S 1084.55 W 2706 62 S 23 37 W 55 2557 46 2635 31 2713 77 2791 22 2869 42 2948 20 3026 52 3104 14 3182 27 S 1119.59 W 2791 06 S 1154.77 W 2876 15 S 1190.46 W 2962 16 S 1226.33 W 3048 50 S 1262.57 W 3134 06 S 1299.57 W 3221 43 S 1336.98 W 3308 73 S 1375.21 W 3395 85 S 1413.47 W 3482 61 S 23 39 W 98 S 23 40 W 84 S 23 41 W 69 S 23 43 W 98 S 23 45 W 79 S 23 47 W 59 S 23 50 W 66 S 23 53 W 59 S 23 57 W 6000 O0 4342 11 4249 71 60 19 6100 6200 6300 6400 6500 660O 6700 6800 6900 O0 4391 O0 4440 O0 4489 O0 4538 O0 4587 O0 4636 O0 4685 O0 4734 O0 4784 56 4299 53 4348 39 4396 27 4445 20 4494 10 4543 16 4592 71 4642 37 4691 16 60 26 13 60 49 99 60 46 87 60 41 80 60 41 70 60 42 76 60 30 31 60 97 60 19 S 26 10 w 3557 56 S 26 14 w 3644 S 26 39 W 3731 S 26 40 W 3818 S 26 45 W 3905 S 27 5 w 3993 S 27 10 w 4080 S 27 25 W 4167 S 27 58 W 4254 S 27 53 W 4341 39 52 72 9O O7 27 38 23 O2 081 071 0 42 0 22 0 0 0 0 0 0 3260 79 S 1451 76 W 3569 36 S 24 0 W 3338 3416 3494 63 3572 32 3650 57 3728 92 3805 19 3882 50 3959 81 S 1490 06 W 3656 87 S t528 90 W 3743 85 S 1568 05 W 3830 80 S 1607 20 W 3917 56 S 1646 70 W 4004 22 S 1686 43 W 4091 69 S 1726 33 W 4178 58 S 1766.72 W 4265 29 S 1807.33 W 4352 22 S 24 3 W 33 S 24 6 W 50 S 24 10 W 66 S 24 13 W 77 S 24 17 W 90 S 24 20 W 93 S 24 24 W 64 S 24 28 W 29 S 24 32 W 7000.00 4833 63 4741 23 60 39 7100.00 4882 7200.C[~ 4933 7300.00 4984 7400.00 5035 7500.00 5O85 7600.00 5136 7700.00 5187 7800.00 5238 7900.O0 5289 69 4790 04 4840 23 4891 24 4942 95 4993 67 5044 39 5094 59 5146 85 5197 29 60 27 64 59 11 83 59 16 84 59 35 55 59 20 27 59 45 99 59 17 19 59 15 45 58 52 S 27 54 W 4428 04 S 27 52 W 4515 S 27 55 W 4601 S 27 57 W 4687 S 28 3 W 4773 S 28 18 W 4859 S 28 18 W 4945 S 28 9 W 5032 S 27 44 W 5117 S 27 25 W 5203 17 56 45 46 65 83 01 90 75 0.44 4036 18 S 1848.10 W 4439 17 S 24 36 W 0.23 4113 0.21 4189 0.36 4265 0.31 4341 0.31 4417 O.22 4493 0.79 4569 0.15 4645 1.80 4721 20 S 1888.84 W 4526 57 S 1929.26 W 4612 47 S 1969.48 W 4698 42 S 2009.86 W 4784 42 S 2050.50 W 4870 29 S 2091.38 W 4956 22 S 2132.16 W 5042 12 S 2172.38 W 5128 22 S 2212.14 W 5213 17 S 24 40 W 43 S 24 44 W 20 S 24 47 W 08 S 24 51 W 13 S 24 54 W 16 S 24 58 W 21 S 25 1W O0 S 25 4 W 78 S 25 6 W COMPUTATION DATE: 19-APR-91 PAGE 3 BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA DATE OF SURVEY: 12-APR-1991 KELLY BUSHING ELEVATION: 92.40 FT ENGINEER: K. PORTER INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH DEPTH DEPTH DEPTH LEG MIN DEG MIN FEET LEG/lO0 FEET FEET FEET DEG MIN 8000.00 5341 88 5249.48 58 40 S 27 8 W 5289 12 8100.00 5394 8200.00 5447 8300.00 5500 8400.00 5554 8500.00 5607 8600.00 5661 8700.00 5715 8800.00 5770 8900.00 5826 34 5301.94 58 15 S 26 50 W 5374 27 5354.87 57 58 S 26 40 W 5459 59 5408.19 57 33 S 26 28 W 5543 09 5461.69 57 41 S 26 17 W 5627 75 5515.35 57 28 S 26 13 W 5712 65 5569.25 57 10 S 26 0 W 5796 98 5623.58 56 45 S 25 44 W 5880 84 5678.44 56 34 S 25 37 W 5963 23 5733.83 56 14 S 25 27 W 6046 0 96 4797 13 S 2251 26 W 5299 12 S 25 8 W 22 0 01 0 56 0 98 0 29 0 43 0 28 0 77 0 91 0 51 4873 42 4948 78 5024 5O 5100 51 5175 35 5251 47 5327 76 5402 29 5477 O0 S 2289 78 S 2328 45 S 2365 13 S 2403 83 S 2440 48 S 2477 02 S 2514 39 S 2550 88 W 5384 03 W 5469 88 W 5553 42 W 5638 72 W 5722 75 W 5806 37 W 5890 56 W 5974 53 S 2586.43 W 6057 21 S 25 10 W 02 S 25 12 W 60 S 25 13 W 06 S 25 14 W 44 S 25 15 W 65 S 25 16 W 60 S 25 16 W 21 S 25 16 W 47 S 25 17 W 9000.00 5881 92 5789.52 56 5 S 25 20 W 6129.83 9100.00 5937 95 5845.55 55 48 S 25 9 W 6212.51 9200.00 5994 40 5902,00 55 30 S 25 7 W 6294.90 9300.00 6051 05 5958.65 55 40 S 25 4 W 6377.14 9400.00 6107 15 6014.75 56 3 S 25 15 W 6459.76 9500.00 6162 84 6070.44 56 17 S 25 16 W 6542.67 9600.00 6218 40 6126.00 56 9 S 25 29 W 6625.68 9700.00 6274.17 6181.77 56 3 S 25 48 W 6708.57 9800.00 6330.09 6237.69 55 58 S 26 8 W 6791.38 9900.00 6386.20 6293.80 55 53 S 26 22 W 6874.08 0 55 5552,56 S 2622 04 W 6140 53 S 25 17 W 55 5627.48 S 2657 77 5702.22 S 2692 78 5776.87 S 2727 07 5851.81 S 2762 52 5926.94 S 2797 49 6002.08 S 2833 49 6076.91 S 2869 55 6151.45 S 2905 45 6225.69 S 2942 37 W 6223 35 S 25 17 W 41 W 6305 90 S 25 17 W 30 W 6388 30 S 25 16 W 47 W 6471 08 S 25 16 W 88 W 6554 14 S 25 16 W 49 W 6637.29 S 25 16 W 40 W 6720.29 S 25 17 W 68 W 6803.19 S 25 17 W 29 W 6885.95 S 25 18 W 10000 O0 6442 23 6349 83 56 2 S 26 37 W 6956 85 10100 10200 10300 10400 10500 10600 10700 10800 10900 O0 6498 O0 6553 O0 6608 O0 6662 O0 6716 O0 6770 O0 6825 O0 6880 O0 6937 09 6405 69 56 8 S 26 51 W 7039 47 6461 07 56 39 S 26 55 W 7122 03 6515 63 57 5 S 26 53 W 7206 27 6569 87 57 12 S 26 55 W 7290 43 6624 03 57 10 S 26 56 W 7374 72 6678 32 57 3 S 27 12 W 7458 40 6733.00 56 40 S 27 37 W 7542 75 6788.35 56 1 S 28 35 W 7625 39 6844.99 55 8 S 29 12 W 7708 75 ,97 73 71 73 68 38 66 O7 0 52 6299.83 S 2979.22 W 6968.76 S 25 19 W 56 6373.93 S 3016,50 W 7051.68 S 25 20 W 79 6448.19 S 3054,15 W 7134.92 S 25 21 W 11 6522.93 S 3092 06 W 7218.69 S 25 22 W 23 6597.86 S 3130 07 W 7302,67 S 25 23 W 24 6672.82 S 3168 11 W 7386.71 S 25 24 W 34 6747.61 S 3206 31 W 7470.65 S 25 25 W 86 6822.00 S 3244 73 W 7554.33 S 25 26 W 57 6895.46 S 3283 97 W 7637.53 S 25 28 W 94 6967.62 S 3323 77 W 7719.79 S 25 30 W 11000 O0 6995.06 6902.66 54 31 S 29 37 W 7789.76 11100 11200 11300 11400 11500 11600 11700 11800 11900 O0 7053.20 6960.80 54 33 S 30 20 W 7871.10 O0 7111.00 7018.60 54 34 S 30 56 W 7952.65 O0 7169.35 7076 95 54 6 S 31 29 W 8033.79 O0 7227.94 7135 54 53 55 S 32 33 W 8114.68 O0 7287.37 7194 97 53 10 S 33 2 W 8194.90 O0 7347.59 7255 19 52 40 S 33 34 W 8274.47 O0 7408.68 7316 28 52 5 S 34 19 W 8353.30 O0 7470.27 7377 87 52 7 S 35 10 W 8431.64 O0 7529.83 7437 43 55 1 S 35 12 W 8511.43 0.48 7038.78 S 3363.91 W 7801 30 S 25 33 W 0.99 7109.29 S 3404.50 W 7882 42 S 25 35 W 0.98 7179.51 S 3446.07 W 7963 71 S 25 38 W 0.89 7248.98 S 3488.13 W 8044 55 S 25 42 W 1.16 7317.68 S 3531.11 W 8125 09 S 25 46 W 0.50 7385.27 S 3574.70 W 8204 92 S 25 50 W 0.79 7452.00 S 3618.52 W 8284 08 S 25 54 W 0.68 7517.67 S 3662.74 W 8362 48 S 25 59 W 1.55 7582.41 S 3707.62 W 8440.35 S 26 3 W 3.02 7648.05 S 3753.90 W 8519.65 S 26 9 W COMPUTATION DATE: 19-APR-91 PAGE 4 BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA DATE OF SURVEY: 12-APR-1991 KELLY BUSHING ELEVATION: 92.40 FT ENGINEER: K. PORTER INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 12000 O0 7585 58 7493 18 56 49 12100 12200 12300 12400 12500 12600 12700 12800 12900 O0 7639 O0 7691 O0 7742 O0 7792 O0 7843 O0 7892 O0 7942 O0 7991 O0 804O 60 7547 81 7599 71 7650 73 7700 02 7750 96 7800 42 7850 90 7899 57 7948 20 57 53 41 59 0 31 59 45 33 60 6 62 59 45 56 60 18 02 60 20 50 6O 35 17 61 12 S 35 48 w 8593 87 S 37 1 W 8677 S 36 46 W 8761 S 37 18 W 8846 S 35 36 W 8932 S 34 40 W 9018 S 36 8 W 9104 S 36 46 W 9190 S 36 44 W 9276 S 38 11W 9363 21 69 76 59 53 56 62 72 04 1 65 2 1 2 1 1 1 1 7715 73 S 3801.95 W 8601 59 S 26 14 W 17 7783 94 7851 94 7920 40 7989 75 8061 21 8131 55 8201 44 8271 41 8340 27 S 3852.15 W 8684 80 S 3902.93 W 8768 13 S 3955.27 W 8852 99 S 4006.42 W 8938 O0 S 4055.71 W 9023 58 S 4105.93 W 9109 27 S 4157.87 W 9195 20 S 4209.45 W 9280 53 S 4262.59 W 9366 37 S 26 20 W 33 S 26 26 W 83 S 26 32 W 20 S 26 38 W 77 S 26 42 W 41 S 26 47 W 04 S 26 53 W S 26 58 W 65 S 27 4 W 13000 O0 8088.83 7996.43 60 39 13100 O0 8138.33 8045.93 60 21 13200 O0 8188.32 8095.92 59 13 13300 O0 8239.72 8147.32 59 9 13400 O0 8290.98 8198.58 59 13 13500 O0 8342.17 8249.77 59 9 13600 O0 8393.47 8301.07 59 8 13700 O0 8445.02 8352.62 59 0 13800.00 8496.19 8403.79 59 39 13900.00 8546.21 8453.81 60 19 S 36 36 w 9449 5O S 36 25 W 9535 S 34 35 w 9621 S 35 38 W 9706 S 37 51W 9791 S 38 56 W 9876 S 39 58 W 9960 S 41 7 W 10044 S 4t 50 W 10128 S 42 23 w 10212 67 57 87 87 53 85 70 47 69 3 57 1 2 1 1 0 1 0 1 1 8409.67 S 4316.35 W 9452 69 S 27 10 W 50 8479.97 S 4367.41 W 9538 65 8550.10 S 4418.22 W 9624 88 8620.57 S 4467.12 W 9709 55 8689.37 S 4518.47 W 9793 79 8756.67 S 4571.88 W 9878 40 8822.95 S 4626.41 W 9962 58 8888.06 S 4682.11 W10045 03 8952.41 S 4739.04 W10129 39 9016.67 S 4797.09 W10213 56 S 27 15 W 18 S 27 20 W 24 S 27 24 W .97 S 27 28 W 32 S 27 34 W 34 S 27 40 W 89 S 27 47 W 37 S 27 54 W 34 S 28 1W 14000.00 8595.t7 8502.77 61 18 14100 O0 8641.18 8548 78 62 58 14200 14300 14400 14500 14600 14700 14800 14900 O0 8688.11 8595 O0 8735.66 8643 O0 8782.57 8690 O0 8831,29 8738 O0 8881.64 8789 O0 8932.29 8839 O0 8982.94 8890 O0 9033.59 8941 71 61 17 26 62 15 17 61 28 89 60 6 24 59 34 89 59 34 54 59 34 19 59 34 S 42 59 W 10297 29 S 41 38 W 10383 S 4O 3 W 10469 S 37 23 W 1O556 S 38 37 W 10643 S 40 3 W 10729 S 41 2 W 10813 S 41 2 W 10898 S 41 2 W 10982 S 41 2 W 11066 54 89 43 7O 46 93 16 38 61 291 2 0 2 3 1 0 0 0 0 9080.78 S 4856.19 W10297 72 S 28 8 W 06 9146.38 S 4915.99 W10383 65 9213.32 S 4973.58 W10470 41 9281.71 S 5028 88 W10556 46 9351.81 S 5082 59 W10643 63 9419.16 S 5138 18 W10729 O0 9484.60 S 5194 57 W10813 O0 9549.66 S 5251 16 W10898 O0 9614.71 S 5307 75 W10982 O0 9679.76 S 5364 34 Wl1066 80 S 28 15 W 04 S 28 22 W 51 S 28 27 W 73 S 28 31 W 47 S 28 37 W 94 S 28 43 W 19 S 28 48 W 48 S 28 54 W 80 S 29 0 W 15000.00 9084.25 8991.85 59 34 15100.00 9134.90 9042.50 59 34 15173.00 9171.87 9079.47 59 34 S 41 2 W 11150.83 S 41 2 W 11235.05 S 41 2 W 11296.54 0.00 9744.81 S 5420.93 W11151.14 S 29 5 W 0.00 9809.87 S 5477.52 Wl1235.51 S 29 11 W 0.00 9857.36 S 5518.84 W11297.12 S 29 15 W COMPUTATION DATE: 19-APR-91 PAGE 5 BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA DATE OF SURVEY: 12-APR-1991 KELLY BUSHING ELEVATION: 92.40 FT INTERPOLATED VALUES FOR EVEN 1000 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN DEG MIN ENGINEER: K. PORTER VERTICAL DOGLEG RECTANGUEAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WES} DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 0 O0 O0 995 O0 1917 O0 2671 O0 3285 O0 3837 O0 4342 O0 4833 oo 5341 O0 5881 0 0 N 0 0 E 0 O0 89 46 14 67 16 56 04 12 83 0 O0 1000 2000 30O0 4000 5000 6O0O 70O0 8000 9000 -92.40 45 903.05 12 16 S 21 46 W 61 21 1824.81 31 19 S 23 2 W 436 53 2579.13 51 16 S 23 28 W 1080 32 3192.92 51 19 S 23 52 W 1866 19 3744.79 58 2 S 24 23 w 2696 11 4249.71 60 19 S 26 10 w 3557 63 4741.23 60 39 S 27 54 W 4428 88 5249.48 58 40 S 27 8 W 5289 92 5789.52 56 5 S 25 20 W 6129 10000 O0 6442 23 6349.83 56 2 11000 O0 6995 06 6902.66 54 31 12000 O0 7585 58 7493.18 56 49 13000 O0 8088 83 7996.43 60 39 14000 O0 8595 17 8502.77 61 18 15000 O0 9084 25 8991.85 59 34 15173 O0 9171 87 9079.47 59 34 S 26 37 W 6956.85 S 29 37 W 7789.76 S 35 48 W 8593.87 S 36 36 W 9449.50 S 42 59 W 10297.29 S 41 2 W 11150.83 S 41 2 W 11296.54 0 O0 1 45 1 24 0 99 0 39 0 O6 0 81 0 44 0 96 0 55 0 O0 N 58 401 995 1718 2479 3260 4036 4797 5552 64 S 21 76 W 62 01 S 176 36 W 438 46 S 430 84 W 1084 04 S 748 76 W 1874 83 S 1084 55 W 2706 79 S 1451.76 W 3569 18 S 1848.10 W 4439 13 S 2251.26 W 5299 56 S 2622.04 W 6140 0 O0 E 0 O0 N 0 0 E 55 S 20 21W 07 S 23 44 W 70 S 23 24 W 12 S 23 33 W 62 S 23 37 W 36 s 24 0 w 17 S 24 36 w 12 S 25 8 w 53 S 25 17 W 0.52 0 1 .65 3.57 2.91 0.00 0.00 6299.83 S 2979.22 W 6968 76 S 25 19 W 7038.78 S 3363.91 W 7801 30 S 25 33 W 7715.73 S 3801.95 W 8601 59 S 26 14 W 8409.67 S 4316.35 W 9452 69 S 27 10 W 9080.78 S 4856.19 W10297 72 S 28 8 W 9744.81 S 5420.93 Wl1151 14 S 29 5 W 9857.36 S 5518.84 W11297 12 S 29 15 W COMPUTATION DATE: 19-APR-91 PAGE 6 BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA DATE OF SURVEY: 12-APR-1991 KELLY BUSHING ELEVATION: 92.40 FT ENGINEER: K. PORTER INTERPOLATED VALUES FOR EVEN 100 FEET OF SUB-SEA DEPTH TRUE SUB-SEA COURSE VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE MEASURED VERTICAL VERTICAL DEVIATION AZIMUT~ SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH DEPTH DEPTH DEPTH DEG MIN DEG MIN FEET DEG/tO0 FEET FEET FEET DEG 0.00 0.00 92.4o 92.40 192.40 192.40 292.41 292.40 392.41 392.40 492.41 492.40 592.49 592.40 692.82 692.40 793.61 792.40 894.93 892.40 -92.40 0 0 N 0 0 E 0.00 0 6 S 23 4 W 100.00 0 5 N 62 49 E 200.00 0 6 - S 54 0 W 300.00 0 17 S 32 52 W 400.00 1 18 S 30 46 W 500.00 3 22 S 28 15 W 600.00 5 52 S 19 35 W 700.00 8 16 S 16 1 W 800.00 10 13 S 19 33 W 0 O0 0 09 0 16 0 15 0 47 1 64 541 13 39 25 64 41 61 0 O0 016 0 24 0 O0 001 1 82 2 22 3 38 2 56 1 88 0 1 4 12 24 39 0 O0 N 0 07 S 0 19 S 0 15 S 41 S 43 S 69 S O5 S O0 S 54 S 0 O0 E 0 07 W 0 02 E 0 0 04 W 0 0 23 W 0 0 80 W 1 2 70 w 5 5 87 W 13 9 55 W 25 14.41 W 42 0.00 N 0 0 E 0 10 S 45 24 W 19 S 6 19 E 16 S 15 0 W 47 S 29 42 W 64 S 29 9 W S 29 53 W 41 S 25 59 W 83 S 21 42 W 09 S 20 2 W 996.87 1099 52 1092 1203 33 1192 1308 31 1292 1414 70 1392 1522 47 1492 1631 83 1592 1742 74 1692 1555 6O 1792 1971 01 1892 992 40 900.00 12 13 40 1000.00 14 16 40 1100.00 16 43 40 1200.00 18 39 40 1300.00 21 7 40 1400.00 22 46 40 1500.00 24 49 40 1600.00 26 30 40 1700.00 28 44 40 1800.00 30 58 S 21 45 W 61.23 S 22 36 W 84.19 S 24 13 W 111.92 S 25 16 W 143.77 S 26 21 W 180.02 S 26 59 W 220.17 S 24 33 W 264.38 S 23 37 W 312.16 S 22 55 W 364.25 S 22 54 W 421.54 1 42 351 2 t5 2 40 1 58 2 08 1 68 1 50 2 23 1 15 58 03 S 79 104 133 166 202 242 286 334 387 21.51 W 61 88 S 20 20 W 46 S 30.17 W 85 99 S 41.26 W 112 98 S 54.63 W 144 64 S 70.46 W 180 44 S 88.68 W 221 25 S 108.02 W 265 06 S 127.50 W 313 13 S 148.16 W 365 20 S 170.51 W 423 O0 S 20 47 W 81 S 21 27 W 69 S 22 11W 93 S 22 55 W 02 S 23 39 W 24 S 24 2 W 19 S 24 t W 50 S 23 55 W 08 S 23 46 W 2088.56 1992.40 1900 O0 32 31 2208.18 2092.40 2000 2330.62 2192.40 2100 2455.22 2292.40 2200 2585.36 2392.40 2300 2726.53 2492.40 2400 2875.54 2592.40 2500 3033.48 2692.40 2600 3196.69 2792.40 2700 3361.81 2892.40 2800 O0 34 10 O0 36 10 O0 37 37 O0 42 29 oo 46 3O O0 49 27 O0 51 36 O0 52 50 O0 52 33 S 23 9 w 483.04 S 21 15 w 548.23 S 22 1 w 618.31 S 23 44 w 692.27 S 24 4 w 775.21 S 23 52 w 874.48 S 23 24 W 984.49 S 23 34 W 1106.21 S 23 44 W 1234.70 S 23 52 W 1365.62 1 49 1 62 1 20 2 34 471 1 32 241 1 08 0 63 0 32 44z 5O4 570 639 715 8O6 907 1019 1137 1257 02 S 194.80 W 484, 87 S 23 41 W 84 S 219.44 W 550 56 S 245.32 W 621 O0 S 274.32 W 695 06 S 308.07 W 778 08 S 348.53 W 878 26 S 392.79 W 988 47 S 441.29 W 1110 64 S 492.98 W 1239 87 S 546.00 W 1371 46 S 23 30 W 06 S 23 16 W 39 S 23 14 W 60 S 23 18 W 20 S 23 23 W 64 S 23 25 W 88 S 23 24 W 87 S 23 26 W 26 S 23 28 W 3525 88 2992.40 2900 O0 52 18 3689 3850 4011 4170 4344 4535 4725 4915 5104 09 3092.40 3000 91 3192.40 3100 32 3292.40 3200 89 3392 40 3300 55 3492 40 3400 39 3592 40 3500 84 3692 40 3600 05 3792 40 3700 87 3892 40 3800 O0 52 7 O0 51 42 O0 51 15 O0 52 21 O0 57 17 O0 58 35 O0 58 11 O0 58 24 O0 58 33 S 23 50 w 1495 23 S 23 41W 1623 S 23 45 W 1750 S 23 52 W 1875 S 23 38 W 1999 S 23 20 W 2140 S 23 49 W 2302 S 23 54 W 2464 S 24 19 W 2624 S 24 18 W 2785 74 49 46 37 67 56 07 18 06 0 35 0 43 0 64 0 93 2 63 2 77 0 39 0 97 0 66 1 43 1376.82 S 598 59 W 1501 32 S 23 30 W 1494.90 S 650 1611.39 S 701 1726.12 S 752 1839.92 S 802 1970.14 S 858 2119.17 S 923 2267.42 S 989 2414.07 S 1054 2561.05 S 1121 52 W 1630 66 W 1757 34 W 1882 47 W 2007 85 W 2149 72 W 2311 24 W 2473 78 W 2634 30 W 2795 31 S 23 31 W 53 S 23 32 W 95 S 23 33 W 30 S 23 34 W 20 S 23 33 W 74 S 23 33 W 82 S 23 34 W 44 S 23 36 W 77 S 23 39 W BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA COMPUTATION DATE: 19-APR-91 PAGE 7 DATE OF SURVEY: 12-APR-1991 KELLY BUSHING ELEVATION: 92.40 FT ENGINEER: K. PORTER INTERPOLATED VALUES FOR EVEN 100 FEET OF SUB-SEA DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN 5298 47 3992.40 3900 O0 59 16 5494 5696 5899 6101 6306 6510 6714 6916 7119 88 4092.40 4000 51 4192.40 4100 77 4292,40 4200 70 4392.40 4300 17 4492.40 4400 61 4592.40 4500 68 4692.40 4600 24 4792,40 4700 62 4892.40 4800 O0 60 9 O0 60 22 O0 60 21 O0 60 27 O0 60 46 O0 60 41 O0 60 26 O0 60 22 O0 60 16 7315 98 4992.40 4900 O0 59 16 7512 64 5092.40 5000 7709 80 5192.40 5100 7904 91 5292 40 5200 8096 33 5392 40 5300 8284 74 5492 40 5400 8471 45 5592 40 5500 8656.72 5692 40 5600 8839.03 5792 40 5700 9018.77 5892 40 5800 O0 59 20 O0 59 14 O0 58 48 O0 58 16 O0 57 35 O0 57 30 O0 57 11 O0 56 24 O0 56 1 9196 47 5992.40 5900 O0 55 31 9373 9553 9732 9911 1O089 10271 10455 10639 10820 61 6092.40 6000 O0 55 58 25 6192.40 6100 O0 56 15 61 6292.40 6200 O0 56 0 05 6392 40 6300 O0 55 54 80 6492 40 6400 O0 56 6 25 6592 40 6500.00 57 3 65 6692 40 6600.00 57 14 78 6792 40 6700.00 56 53 77 6892 40 6800.00 55 45 10995 43 6992 40 6900.00 54 32 11167 11339 11508 11673 11836 12012 12201 12399 12598 85 7092 4O 7192 40 7292 48 7392 31 7492 46 7592 15 7692 34 7792 87 7892 40 7000.00 54 43 40 7100.00 54 13 40 7200.00 53 8 40 7300.00 52 12 40 7400.00 52 54 40 7500.00 56 55 40 7600.00 59 0 40 7700.00 60 6 40 7800.00 60 18 VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH DEG MIN FEET S 24 41 W 2950 39 S 25 9 W 3119 04 S 25 52 W 3293 83 S 26 8 W 3470 61 S 26 t4 W 3645 87 S 26 40 W 3824 10 S 27 6 W 4002 32 S 27 30 W 4180 15 S 27 55 W 4355 14 S 27 53 W 4532 21 S 27 58 W 4701.19 $ 28 19 W 4870.52 S 28 6 W 5040.43 S 27 24 W 5207.95 S 26 51 W 5371 10 S 26 30 W 5530 69 S 26 14 W 5688 23 S 25 52 W 5844 04 S 25 32 W 5996 26 S 25 18 W 6145 37 S 25 8 W 629t 99 S 25 12 W 6437 92 S 25 22 W 6586 89 S 25 53 W 6735 58 S 26 24 W 6883 22 S 26 49 W 7031 28 S 26 53 W 7182 62 S 26 55 W 7337 47 S 27 15 W 7492 02 S 28 43 W 7642.86 S 29 36 W 7786.04 S 30 46 W 7926.45 S 31 56 W 8065.69 S 33 5 W 8201.60 S 34 9 W 8332.46 S 35 14 W 8460.24 S 36 1 W 8604.22 S 36 47 W 8762.67 S 35 37 W 8932.02 S 36 7 W 9103.59 DEG/IO0 FEET FEET FEET DEG 0.33 1.49 2865 1.16 3023 0.14 3182 0.71 3340 0.18 3499 0.25 3658 0.66 3817 0.42 3971 1.36 4128 2711 96 S 1189.91 W 2961.52 S 23 41 W 48 S 1260.69 W 3130.54 S 23 45 W 70 S 1335.66 W 3305.56 S 23 50 W 67 S 1413.39 W 3482.40 S 23 57 W 13 S 1490.72 W 3657 69 S 24 3 W 66 S 1570.46 W 3835 88 S 24 10 W 80 S 1650.91 W 4014 02 S 24 17 W 02 S 1732.22 W 4191 68 S 24 25 W 77 S 1813.94 W 4366 38 S 24 33 W 27 S 1896.81 W 4543 19 S 24 41 W 0.46 4277.60 S 1975.92 W 4711.91 S 24 48 W 0.19 4427.00 S 2055.65 W 4880.99 S 24 54 W 0.70 4576.64 S 2136.12 W 5050 61 S 25 1 W 1.64 4724.95 S 2214.07 W 5217 97 S 25 6 W 0.46 4870.22 S 2288.47 W 5381 09 S 25 10 W 1.00 5012.92 S 2360.14 W 5540 72 S 25 13 W 0.39 5154.23 S 2430.08 W 5698 36 S 25 15 W 0.71 5294.34 S 2498.59 W 5854 32 S 25 16 W 0.52 5431.74 S 2564.60 W 6006 74 S 25 16 W 0.78 5566.64 S 2628.70 W 6156 10 S 25 17 W 0.71 0 56 5832.01 S 2753.15 W 6449 0 26 5966.98 S 2816.81 W 6598 0 50 6101.25 S 2881.19 W 6747 0 43 6233.88 S 2946.35 W 6895 0 50 6366.37 S 3012.68 W 7043 0 17 6501.40 S 3081.16 W 7194 0 09 6639.57 S 3151.24 W 7349 0 46 6777.26 S 3221,56 W 7503 1.49 6910.55 S 3292.21 W 7654 5699.58 S 2691.17 W 6302 99 S 25 17 W 20 S 25 16 W 43 $ 25 16 W 33 S 25 17 W 09 S 25 18 W 21 S 25 19 W 57 S 25 21W 44 S 25 23 W 98 S 25 25 W 70 S 25 28 W 0.51 0.46 1.15 0.41 0.64 2.90 1 .70 1 .96 1 .34 1.19 7035.54 S 3362.06 W 7797 58 S 25 33 W 7156.99 S 3432.63 W 7937 7276.16 S 3504.93 W 8076 7390.90 S 3578,36 W 8211 7500.36 S 3650.96 W 8341 7605.94 S 3724,21 W 8468 7724.19 S 3808.05 W 8611 7852.59 S 3903.52 W 8769 7989.52 S 4006.08 W 8937 8130.79 S 4105.35 W 9108 60 S 25 37 W 32 S 25 43 W 58 S 25 5O W 75 S 25 57 W 77 S 26 5 W 87 S 26 15 W 30 S 26 26 W 63 S 26 38 W 44 S 26 47 W COMPUTATION DATE: 19-APR-91 PAGE 8 BP EXPLORATION P-21 (22-12-10-12) PRUDHOE BAY NORTH SLOPE, ALASKA DATE OF SURVEY: 12-APR-1991 KELLY BUSHING ELEVATION: 92.40 FT ENGINEER: K. PORTER INTERPOLATED VALUES FOR EVEN 100 FEET OF SUB-SEA DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 12801 01 7992 40 7900.00 60 36 13007 13207 13402 13597 13792 13994 14208 14420 14621 26 8092 96 8192 76 8292 92 8392 50 8492 24 8592 94 8692 54 8792 24 8892 40 BO00.O0 60 32 40 8100.00 59 6 40 8200,00 59 13 40 8300.00 59 8 40 8400.00 59 35 40 8500.00 61 9 40 8600.00 61 13 40 8700.00 61 21 40 8800.00 59 34 S 36 45 W 9277.59 S 36 22 W 9455.76 S 34 26 W 9628.37 S 37 54 W 9794.21 S 39 57 W 9959.t0 S 41 48 W 10122.16 S 42 58 W 10292.40 S 40 3 W 10477.58 S 39 10 W 10661.45 S 41 2 W 10831.82 1 . 44 3.23 1 .82 1 .51 1 40 2 63 041 1 93 0 O0 8271 90 S 4209 98 W 9281.61 S 26 58 W 8414 8555 8691 8821 8947 9077 9219 9365 9498 76 S 4320 73 S 4422 25 S 4519 58 S 4625 56 S 4734 08 S 4852 32 S 4978 84 S 5093 42 S 5206 10 W 9458.94 S 27 11 W 09 W 9630.96 S 27 20 W 93 W 9796.30 S 27 29 W 26 W 9960 59 S 27 40 W 72 W10123 08 S 27 53 W 75 W10292 84 S 28 8 W 63 W10477 72 S 28 22 W 91 W10661 47 S 28 32 W 59 W10831 83 S 28 44 W 14818.67 8992.40 8900.00 59 34 15016.10 9092.40 9000.00 59 34 15173.00 9171.87 9079.47 59 34 S 41 2 W 10998.11 S 41 2 W 11164.39 S 41 2 W 11296.54 0.00 0.00 0.00 9626.85 S 5318.32 W10998.22 S 28 55 W 9755.29 S 5430.04 Wl1164.72 S 29 6 W 9857.36 S 5518.84 Wl1297.12 S 29 15 W SCHLUMBERGER O I RE C T I ONAL SURVE Y COMPANY BP EXPLORAT I ON WELL P-21 (22-12-10-12) FI ELD PRUOHOE BAY COUNTRY USA RUN ONE DATE LOOOED i2 - APR - 9i REFERENCE 74510 ~ELL: P-21 (22-12-10-12) (2260' FSL, 2019" FWL, SEC 31, T11N, R13E) :)RIZONTAL PROJECTION 4000 2000 -2000 -4000 -8000 -8000 REF 74510 SCALE = 1/2000 IN/FT · q-j-~4-.-4--+--v4.--~--6--k.~--4---.;.-+-+--½.-~--4.-4 ...... ½--+-+4--+.+-+-+-+.-.--1...¢'--1-1.-~-.1.-+-.,..-3 ...... 4-.+-+.1---t-..4.-1--+--.~ ...... ?-.+.+.-t.i.-+.-3.-.~. ....... ~:'--1.'"'.:'-+"t"-??:-"; ....... ?:...?..-r...t.-.t...?.-:--.? .... 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T-f"f'T .... f'?f'ff ..... fff"?i ....... t"f"f'~'"T'ff"+'+-f ..... f"f'+'ff"~"+'ff"'f'+" "'+"f"+'ff"T'ff"~'-?"+ ...... ~-T'ff"+",'"fff"T'ff ....... "-t'i-'-t-'~ ...... t--t"t--t--~'il~n'~--i'-i-"~ ....... t't't-H-?'H'-~ ...... f'?"f-h?"f'i"?"i ....... f'"H"?-h??-f"f'"'f'?"?t'?"t"-?'~ ........ ?t"f'l"?'"f"? ........ ~"'?':"r'?'"f"?'~ .... PROJECTION ON VERTICAL PLANE 209. - 2'9. SCRLED IN VERTICAL DEPTHS HORIZ SCALE = 1/2000 IN/FT O It l G I iV,4 L GREAT LAND DIRECTIONAL DRILLING, INC. REPORT OF SUB-SURFACE DIRECTIONAL SURVEY BP EXPLORATION (ALASKA), INC. COMPANY P-21 WELL NAME PRUDHOE BAY LOCATION AL391D16 MWD o4/15/91 JOB NUMBER TYPE SURVEY · DIRECTIONAL LYNN HENSLEY SUPERVISOR NAME TITLE /~D~TE S I GNATURE DEPTH INTERVAL 414 FT. 14545 FT. FROM TO 03/19/91 04/05/91 DATE SURVEY TAKEN FROM TO THIS IS A RECORD OF A SUB-SURFACE SURVEY OF YOUR WELL WE HAVE RETAINED A COPY OF YOUR SURVEY REPORT IN OUR FILES FOR YOUR CONVENIENCE; HOWEVER, SHOULD YOU SO DESIRE, ALL COPIES OF THE SURVEY REPORT WILL BE FORWARDED TO YOU ON WRITTEN REQUEST. ALL SURVEYS ARE KEPT IN A LOCKED FILE AND ARE HELD IN STRICTEST CONFIDENCE. qate ~ I~ RECEIVED Alaska Oi~ & Gas C;o~s. Anchorage ~REAT LAND .~lient .... : ?ield ..... : Yell ...... : ~ection at: ~ngineer..: MEAS DEPTH 414 505 594 685 777 DIRECTIONAL DRILLING, BP EXPLORATION PRUDHOE BAY P-21 S,27.44,W LYNN HENSLEY INCLN ANGLE 0.30 1.10 3.70 5.'80 8.00 867 9 956 11 1049 12 1141 15 1231 17 1325 19 1420 21 1514 22 1608 25 1702 25 1796 27 1890 29 1984 31 2081 31 2172 33 2279 35 · Survey Codes iPP21D Sl. 17) VERTICAL-DEPTHS BKB SUB-SEA INC. SECTION DISTNCE 414.0 321.6 -0.6 505.0 412.6 -0.0 593.9 501.5 3.6 684.6 592.2 11.2 775.9 683.5 22.1 .60 864.9 772.5 35.6 , .30 952.4 860.0 51.6 .70 1043.3 950.9 70.8 .20 1132.6 1040.2 92.8 .40 1219.0 1126.6 118.0 .20 1308.2 1'215.8 147.4 .10 1397.4 1305.0 180.1. .70 1484.6 1392.2 215.1 .00 1570.6 1478.2 253.1 .40 1655.7 1563.3 293.0 RECORD OF SURVEY DIRECTION BEARING N 86.30 E S 41.30 W S 32.80 W S 22.30 W S 14.90 W 04/19/91 S 17.00 W S 23.30 W S 20.20 W S 21.90 W S 22.30 W Computation...: Survey Date...: RKB Elevation.: Reference ..... : Magnetic Dcln.: RADIUS OF CURVATURE 04/05/91 92.40 ft 30.00 E S 24.40 W S 24.70 W S 25.80 W S 23.70 W S 22.30 W RELATIVE-COORDINATES FROM-WELL-HEAD 0.1 N 1.1 E 0.7 S 1.5 E 3.7 S 0.8 W 10.4 S 4.3 W 20.8 S 7.8 W 34.1 S 11.6 W 49.2 S 17.1 W 67.2 S 24.3 W 87.9 S 32.3 W 111.3 S 41.8 W 138.4 S 53.5 W 168.1 S 67.0 W 199.8 S 82.0 W 234.3 S 97.9 W 271.2 S 113.6 W .70 1739.7 1647.3 334.8 S 22.30 W 310.1 S 129.5 W .20 1822.4 1730.0 379.4 S 21.20 W 351.6 S 146.1 W .40 1903.5 1811.1 426.6 S 21.60 W 395.8 S 163.4 W .70 1986.2 1893.8 477.1 S 23.00 W 442.8 S 182.6 W .30 2062.9 1970.5 525.8 S 20.90 W 488.1 S 200.9 W .20 2151.4 2059.0 585.7 S 21.90 W : 3/MWD 544.2 S 222.9 W CLOSURE DL DISTNCE BEARING /100 1.1 N 86.30 E 0.07 1.6 S 64.09 E 0.88 3.8 S 11.91 W 2.92 11.2 S 22.35 W 2.31 22.2 S 20.49 W 2.40 36.0 S 18.75 W 1.78 52.1 S 19.18 W 1.93 71.4 S 19.88 W 1.51 93.6 S 20.16 W 2.72 118.8 S 20.57 W 2.44 148.3 S 21.12 W 1.93 181.0 S 21.74 W 2.00 216.0 S 22.31 W 1.71 254.0 S 22.68 W 2.48 294.0 S 22.72 W 0.51 336.0 S 22.67 W 2.45 380.8 S 22.56 W 1.62 428.2 S 22.43 W 2.34 479.0 S 22.42 W 0.50 527.8 S 22.37 W 1.89 588.0 S 22.27 W 1.80 '-21 MEAS INCLN DEPTH ANGLE VERTICAL-DEPTHS BKB SUB-SEA 2374 35.90 2228.7 2136.3 2468 37.40 2304.1 2211.7 2562 40.90 2377.0 2284.6 2656 44.80 2445.9 2353.5 2750 46.30 2511.7 2419.3 2844 48.30 2575.4 2483.0 2938 50.40 2636.7 2544.3 3023 51.70 2690.1 2597.7 3118 52.30 2748.6 2656.2 3213 53.00 2806.2 2713.8 3307 52.60 2863.1 2770.7 3401 52.50 ~920.2 2827.8 3495 52.40 2977.5 2885.1 3589 52.20 3035.0 2942.6 3684 52.10 3093.3 3000.9 3778 51.70 3151.3 3058.9 3872 51.50 3209.7 3117.3 3967 51.30 3268.9 3176.5 4060 50.90 3327.3 3234.9 4154 51.50 3386.2 3293.8 4248 54.30 3442.9 3350.5 4342 57.00 3496.0 3403.6 4437 58.70 3546.5 3454.1 4531 58.60 3595.4 3503.0 4626 58.30 3645.1 3552.7 4719 58.20 3694.1 3601.7 ~Survey Codes: 3/MWD RECORD OF SURVEY SECTION DISTNCE DIRECTION BEARING RELATIVE-COORDINATES FROM-WELL-HEAD 640.6 S 21.20 W 595.5 S 243.2 W 696.4 S 22.60 W 647.6 S 264.1 W 755.6 ,S 22.60 W 702.4 S 286.9 W 819.3 S 23.70 W 761.2 S 312.0 W 886.2 S 22.30 W 822.9 S 338.3 W S 24.00 W 886.4 S 365.4 W S 23.00 W 951.8 S 393.9 W S 23.30 W 1012.6 S 419.8 W S 23.30 W 1081.4 S 449.4 W S 23.30 W 1150.7 S 479.3 W ~955.1 1026.2 1092.2 1166.8 1242.1 1316.7 S 21.90 W 1219.8 S 508.1 W 1391.1 S 23.00 W 1288.8 S 536.6 W 1465.4 S 22.60 W 1357.5 S 565.5 W 1539.5 S 22.60 W 1426.2 S 594.1 W 1614.2 S 22.30 W 1495.5 S 622.7 W 1687.9 1761.4 1835.6 1907.8 1980.8 S 23.30 W S 24.00 W S 24.40 W S 23.30 W S 22.30 W S 21.60 W S 21.20 W S 23.00 W S 23.30 W S 23.70 W 2055.4 2132.6 2212.7 2292.7 2373.5 Page 2 CLOSURE DISTNCE BEARING 643.3 S 22.21 W 699.4 S 22.19 W 758.7 S 22.22 W 822.6 S 22.29 W 889.7 S 22.35 W 958.8 S 22.40 W 1030.1 S 22.48 W 1096.2 S 22.52 W 1171.0 S 22.57 W 1246.6 S 22.61 W 04/19/91 1321.4 S 22.61 W 1396.1 S 22.60 W 1470.6 S 22.61 W 1545.0 S 22.61 W 1620.0 S 22.61 W 1563.7 S 651.4 W 1693.9 S 22.61 W 1631.2 S 680.9 W 1767.6 S 22.66 W 1698.9 S 711.3 W 1841.8 S 22.72 W 1765.1 S 740.6 W 1914.2 S 22.76 W 1832.6 S 769.0 W 1987.4 S 22.76 W 1902.2 S 797.0 W 2062.4 S 22.73 W 1974.4 S 825.3 W 2140.0 S 22.69 W 2048.9 S 855.6 W 2220.4 S 22.66 W 2122.7 S 887.2 W 2300.7 S 22.68 W 2197.0 S 919.4 W 2381.6 S 22.71 W 2452.4 S 23.30 W 2269.5 S 951.0 W 2460.7 S 22.73 W DL /loo 0.78 1.69 3.72 4.19 1.78 2.35 2.32 1.54 0.63 0.74 1.03 0.74 0.29 0.21 0.22 0.78 0.50 0.33 0.83 0.91 3.02 2.89 2.26 0.26 0.44 0.33 -21 RECORD OF SURVEY Page 3 04/19/91 MEAS INCLN DEPTH ANGLE 4819 58~.00 4913 58.50 5007 58.10 .5095 58.60 ~5192 58.50 5290 59.20 5384 59.20 5478 60.10 5572 60.00 5667 60.10 5767 60.60 5861 60.40 5956 60.30 6043 60.20 6138 60.60 6231 60.60 6325 60.70 6419 60.60 6521 60.60 6615 60.60 6710 60.40 6804 59.70 6897 60.30 6973 60.60 7073 60.50 7169 59.20 VERTICAL-DEPTHS BKB SUB-SEA SECTION DISTNCE DIRECTION BEARING RELATIVE-COORDINATES FROM-WELL-HEAD 3746.9 3654.5 2537.1 S 23.70 W 2347.4 S 984.8 W 3796.4 3704.0 '2616.9 S 24.00 W 2420.5 S 1017.1 W 3845.8 3753.4 2696.7 S 23.30 W 2493.7 S 1049.2 W 3892.0 3799.6 2771.4 S 24.00 W 2562.3 S 1079.3 W 3942.6 3850.2 2854.0 S 23.70 W 2638.0 S 1112.7 W 3993.3 3900.9 2937.7 S 23.70 W 2714.8 S 1146.4 W 4041.4 3949.0 3018.3 S 23.70 W 2788.8 S 1178.9 W 4088.9 3996.5 3099.2 S 24.00 W 2862.9 S 1211.7 W 4135.8 4043.4 3180.6 S 24.70 W 2937.1 S 1245.3 W 4183.2 4090.8 3262.8 S 24.40 W 3012.0 S 1279.5 W 4232.7 4140.3 3349.5 4279.0 4186.6 3431.2 4326.0 4233.6 3513.7 4369.2 4276.8 3589.1 4416.1 4323.7 3671.6 S 24.00 W 3091.3 S 1315.1 W S 24.40 W 3165.9 S 1348.6 W S 24.40 W 3241.1 S 1382.7 W S 24.70 W 3309.8 S 1414.1 W S 25.40 ~ 3384.6 S 1449.1 W S 27.00 W 3457.3 S 1484.9 W S 27.50 W 3530.2 S 1522.4 W S 26.10 W 3603.3 S 1559.3 W S 26.10 W 3683.1 S 1598.4 W S 26.50 W 3756.5 S 1634.7 W 4461.7 4369.3 3752.6 4507.8 4415.4 3834.6 4553.9 4461.5 3916.5 4604.0 4511.6 4005.3 4650.1 4557.7 4087.2 4696.9 4604.5 4169.9 S 26.80 W 3830.4 S 1671.8 W 4743.8 4651.4 4251.3 S 27.50 W 3902.9 S 1709.0 W 4790.3 4697.9 4331.9 S 26.80 W 3974.6 S 1745.7 W 4827.8 4735.4 4398.0 S 25.80 W 4033.8 S 1775.0 W 4877.0 4784.6 4485.0 S 25.80 W 4112.2 S 1812.9 W 4925.2 4832.8 4568.0 S 26.80 W 4186.6 S 1849.7 W CLOSURE DL DISTNCE BEARING /100 2545.6 S 22.76 W 0.35 2625.5 S 22.79 W 0.58 2705.5 S 22.82 W 0.68 2780.4 S 22.84 W 0.81 2863.1 S 22.87 W 0.25 2947.0 S 22.89 W 0.71 3027.7 S 22.92 W 0.00 3108.8 S 22.94 W 0.99 3190.2 S 22.98 W 0.57 3272.5 S 23.02 W 0.26 3359.4 S 23.05 W 0.58 3441.2 S 23.07 W 0.39 3523.7 S 23.10 W 0.11 3599.2 S 23.13 W 0.28 3681.8 S 23.18 W 0.70 3762.7 S 23.24 W 1.31 3844.5 S 23.33 W 0.42 3926.2 S 23.40 W 1.14 4015.0 S 23.46 W 0.00 4096.8 S 23.52 W 0.32 4179.4 S 23.58 W 0.32 4260.7 S 23.65 W 0.93 4341.0 S 23.71 W 0.86 4407.1 S 23.75 W 1.07 4494.1 S 23.79 W 0.10 4577.0 S 23.84 W 1.56 iurvey Codes: 3/MWD -21 MEAS INCLN DEPTH ANGLE VERTICAL-DEPTHS BKB SUB-SEA RECORD OF SURVEY SECTION DISTNCE DIRECTION BEARING RELATIVE-COORDINATEs FROM-WELL-HEAD 7263 59.10 4973.4 4881.0 4648.7 S 27.90 W 4258.3 S 1886.8 W 7356 59.40 5020.9 4928.5 4728.6 S 25.80 W 4329.6 S 1922.9 W 7450 59.50 5068.7 4976.3 4809.5 S 25.80 W 4402.5 S 1958.1 W 7633 59.60 5161.5 5069.1 4967.3 S 27.50 W 4543.5 S 2028.9 W 7726 59.20 5208.8 5116.4 5047.3 S 27.50 W 4614.5 S 2065.8 W 7826 59.10 5260.1 5167.7 5133.2 S 28.20 W 4690.4 S 2105.9 W 7919 58.60 5308.2 5215.8 5212.8 S 26.50 W 4761.1 S 2142.5 W 8013 58.40 5357.3 5264.9 5292.9 S 26.50 W 4832.8 S 2178.2 W 8108 58.20 5407.2 5314.8 5373.7 S 26.50 W 4905.2 S 2214.3 W 8202 57.80 5457.0 5364.6 5453.4 S 25.40 W 4976.8 S 2249.2 W 8295 57.60 5506.7 5414.3 5532.0 S 26.50 W 5047.5 S 2283.6 W 8388 57.70 5556.5 5464.1 5610.5 S 25.40 W 5118.2 S 2318.0 W 8487 57.60 5609.5 5517.1 5694.1 S 25.10 W 5193.8 S 2353.6 W 8581 57.30 5660.0 5567.6 5773.2 S 24.70 W 5265.7 S 2387.0 W 8672 57.00 5709.4 5617.0 5849.6 S 24.40 W 5335.2 S 2418.8 W 8764 56.70 5759.7 5667.3 5926.5 S 24.70 W 5405.3 S 2450.8 W 8857 56.30 5811.0 5718.6 6004.0 S 24.40 W 5475.8 S 2483.0 W 8951 56.10 5863.3 5770.9 6082.0 S 24.70 W 5546.9 S 2515.5 W 9044 55.90 5915.3 5822.9 6158.9 S 23.00 W 5617.4 S 2546.6 W 9145 55.60 5972.2 5879.8 6242.2 S 23.70 W 5694.0 S 2579.7 W 9237 55.40 6024.3 5931.9 6317.9 S 24.70 W 9331 55.80 6077.4 5985.0 6395.4 S 25.80 W 9425 56.20 6130.0 6037.6 6473.3 S 24.70 W 9519 56.40 6182.1 6089.7 6551.4 S 24.40 W 9613 56.20 6234.3 6141.9 6629.5 S 24.00 W 9715 56.10 6291.1 6198.7 6714.0 S 24.70 W 5763.2 S 2610.8 W 5833.3 S 2643.9 W 5903.8 S 2677.1 W 5975.0 S 2709.6 W 6046.3 S 2741.7 W 6123.5 S 2776.6 W Page 4 04/19/91 CLOSURE DL DISTNCE BEARING /100 4657.6 S 23.90 W 0.87 4737.4 S 23.95 W 1.70 4818.3 S 23.98 W 0.11 4975.9 S 24.06 W 0.69 5055.8 S 24.12 W 0.43 5141.5 S 24.18 W 0.53 5221.0 S 24.23 W 1.44 5301.0 S 24.26 W 0.21 5381.8 S 24.30 W 0.21 5461.5 S 24.32 W 0.94 5540.1 S 24.34 W 0.87 5618.6 S 24.37 W 0.85 5702.2 S 24.38 W 0.24 5781.5 S 24.39 W 0.44 5857.9 S 24.39 W 0.40 5934.9 S 24.39 W 0.40 6012.5 S 24.39 W 0.48 6090.6 S 24.39 W 0.31 6167.7 S 24.39 W 1.27 6251.2 S 24.37 W 0.56 6327.0 S 24.37 W 0.77 6404.5 S 24.38 W 0.91 6482.4 S 24.39 W 0.91 6560.7 S 24.39 W 0.31 6638.9 S 24.39 W 0.36 6723.6 S 24.39 W 0.48 Survey Codes: 3/MWD -21 MEAS INCLN DEPTH ANGLE VERTICAL-DEPTHS BKB SUB-SEA 9806 56.00 6341.9 6249.5 9900 55.90 6394.5 6302.1 9994 56.10 6447.1 6354.7 10075 56.10 6492.3 6399.9 10170 56.50 6545.0 6452.6 10264 57.00 6596.5 6504.1 10359 57.20 6648.1 6555.7 10454 57.40 6699.5 6607.1 10548 57.10 6750.3 6657.9 10642 57.00 6801.4 6709.0 10736 56.60 6852.9 6760.5 10830 55.70 6905.3 6812.9 10978 54.80 6'989.6 6897.2 11070 54.70 7042.7 6950.3 11165 55.00 7097.4 7005.0 11259 54.50 7151.7 7059.3 11353 54.50 7206.3 7113.9 11447 54.00 7261.2 7168.8 11539 53.30 7315.7 7223.3 11633 52.70 7372.3 7279.9 11724 52.30 7427.7 7335.3 11827 52.60 7490.4 7398.0 11920 55.90 7544.8 7452.4 12012 57.10 7595.5 7503.1 12106 58.30 7645.8 7553.4 SECTION DISTNCE 6789.5 6867.3 6945.2 7012.4 7091.4 RECORD OF SURVEY 7170.0 7249.7 7329.6 7408.7 7487.5 7566.2 7644.2 7765.8 7840.9 7918.5 7995.1 8071.6 8147.7 8221.6 8296.5 8368.4 8449.5 8524.5 8600.7 8679.4 DIRECTION BEARING RELATIVE-COORDINATES FROM-WELL-HEAD S 25.10 W 6191.9 S 2808.4 W S 25.40 W 6262.4 S 2841.6 W S 25.10 W 6332.9 S 2874.8 W S 27.20 W 6393.2 S 2904.5 W S 25.80 W 6463.9 S 2939.7 W S 26.10 W 6534.6 S 2974.1 W S 26.50 W 6606.1 S 3009.5 W S 25.40 W 6678.0 S 3044.5 W S 25.80 W 6749.3 S 3078.6 W S 26.50 W 6820.1 S 3113.4 W S 28.20 W 6890.0 S 3149.5 W S 28.20 W 6958.8 S 3186.4 W S 29.30 W 7065.4 S 3244.9 W S 29.30 W 7130.9 S 3281.7 W S 30.70 W 7198.2 S 3320.5 W S 30.00 W 7264.4 S 3359.3 W S 31.10 W 7330.3 S 3398.2 W S 31.40 W 7395.5 S 3437.8 W S 31.80 W 7458.6 S 3476.6 W S .31.40 W 7522.6 S 3515.9 W S 33.50 W S 33.90 W S 33.90 W S 34.90 W S 36.00 W 12200 59.20 7694.5 7602.1 8758.9 S 35.60 W ~urvey Codes: 3/MWD 7583.5 S 3554.7 W 7651.4 S 3600.0 W 7714.1 S 3642.1 W 7777.4 S 3685.4 W 7842.1 S 3731.5 W 7907.3 S 3778.5 W Page 5 04/19/91 CLOSURE DL DISTNCE BEARING /100 6799.0 S 24.40 W 0.32 6876.9 S 24.41 W 0.24 6954.8 S 24.42 W 0.31 7022.0 S 24.43 W 1.79 7101.0 S 24.46 W 1.11 7179.6 S 24.47 W 0.58 7259.3 S 24.49 W 0.36 7339.2 S 24.51 W 0.85 7418.3 S 24.52 W 0.44 7497.1 S 24.54 W 0.53 7575.7 S 24.57 W 1.33 7653.6 S 24.60 W 0.96 7774.9 S 24.67 W 0.78 7849.8 S 24.71 W 0.11 7927.1 S 24.76 W 1.04 8003.5 S 24.82 W 0.73 8079.7 S 24.87 W 0.78 8155.5 S 24.93 W 0.57 8229.1 S 24.99 W 0.81 8303.7 S 25.05 W 0.69 8375.3 S 25.11 W 1.51 8456.0 S 25.20 W 0.38 8530.6 S 25.27 W 3.55 8606.4 S 25.35 W 1.51 8684.6 S 25.45 W 1.53 8763.7 S 25.54 W 1.01 -21 RECORD OF SURVEY Page 6 04/19/91 MEAS INCLN DEPTH ANGLE VERTICAL-DEPTHS BKB SUB-SEA SECTION DISTNCE 12293 59.90 7741.7 7649.3 8838.0 12387 60.60 7788.3 7695.9 8918.7 12481 59.90 7835.0 7742.6 8999.7 12576 60.50 7882.2 7789.8 9081.5 12669 60.70 7927.8 7835.4 9161.8 12761 60.60 7972.9 7880.5 9241.2 12855 61.30 8018.6 7926.2 9322.5 12948 61.70 8062.9 7970,5 9403.1 13041 60.60 8107.8 8015.4 9483.6 13135 60.70 8153.9 8061.5 9564.7 13230 59.30 8201.4 8109.0 9646.3 13319 59.50 8246.7 8154.3 9722.4 13426 59.50 8301.0 8208.6 9813.5 13518 59.20 8347.9 8255.5 9891.1 13612 59.10 8396.1 8303.7 9970.2 13706 59.00 8444.4 8352.0 10049.0 13798 59.70 8491.3 8398.9 10126.2 13892 60.40 8538.3 8445.9 10205.4 13981 61.00 8581.8 8489.4 10280.5 14075 63.50 8625.6 8533.2 10361.1 DIRECTION BEARING RELATIVE-COORDINATES FROM-WELL-HEAD S 37.40 W 7971.7 S 3826.2 W S 34.60 W 8037.7 S 3874.1 W S 34.60 W 8104.9 S 3920.5 W S 34.60 W 8172.8 S 3967.3 W, S 35.60 W 8239.1 S 4013.9 W S .34.90 W S 36.70 W S 37.40 W S 34.90 W S ,36.30 W S 33.20 W S 34.90 W S 38.10 W S 38.80 W S 39.50 W CLOSURE DISTNCE BEARING 8842.4 S 25.64 8922.7 S 25.73 9003.3 S 25.81 9084.8 S 25.89 9164.8 S 25.97 8304.6 S 4060.2 W 9243.9 S 26.05 8371.2 S 4108.2 W 9324.9 S 26.14 8436.4 S 4157.5 W 9405.2 S 26.23 8502.2 S 4205.5 W 9485.4 S 26.32 8568.8 S 4253.2 W 9566.3 S 26.40 8636.4 S 4300.1 W 9647.7 S 26.47 8699.9 S 4343.0 W 9723.7 S 26.53 8774.0 S 4397.8 W 9814.5 S 26.62 8836.0 S 4447.0 W 9891.9 S 26.72 8898.5 S 4498.0 W 9970.8 S 26.82 S 39.80 W 8960.6 S 4549.4 W 10049.4 S 26.92 S 40.50 W 9021.1 S 4600.5 W 10126.4 S 27.02 S 41.30 W 9082.7 S 4653.8 W 10205.5 S 27.13 S 42.70 W 9140.3 S 4705.7 W 10280.6 S 27.24 S 40.90 W 9202.4 S 4761.2 W 10361.1 S 27.36 14168 61.70 8668.4 8576.0 10441.5 S 40.20 W 14261 61.90 8712.3 8619.9 10521.6 S 38.80 W 14353 62.30 8755.4 8663.0 10601.5 S 37.70 W 14447 61.00 8800.0 8707.6 10682.7 S 39.10 W 14545 59.20 8848.9 8756.5 10765.4 S 42.10 W 9265.1 S 4814.8 W 9328.3 S 4867.0 W 9392.2 S 4917.3 W 9457.0 S 4968.7 W 9521.5 S 5024.0 W W W W W W W W W W W W W W W W 10441.5 S 27.46 10521.7 S 27.55 10601.6 S 27.63 10682.8 S 27.72 10765.7 S 27.82 W W W W W DL /lOO 1.63 2.38 0.74 0.63 0.85 0.59 1.65 0.72 2.36 1.14 2.83 1.44 2.22 0.65 0.56 0.26 0.95 0.98 1.38 3.07 2.02 1.19 1.03 1.79 2.91 Survey Codes: 3/MWD '. -21 Page 7 DATA INTERPOLATED FOR 100 FT SUBSEA INTERVAL 04/19/91 UBSEA EPTH 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 MEAS DEPTH 492 592 693 794 895 997 1099 1203 1308 1415 1522 1632 1743 . 1856 1971 2088 2207 2329 2453 2583 2722 2870 3027 3190 3355 INCLN TVD MD-TVD VERT DIRECTION ANGLE BKB DIFF CRRT BEARING 0.99 492 0 0 N 72.44 E 3.66 592 0 0 S 32.94 W 5.99 692 0 0 S 21.67 W 8.30 792 1 1 S 15.29 W 10.13 892 3 1 S 18.98 W 11.92 992 4 2 S 21.94 W 14.07 1092 7 3 S 21.13 W 16.72 1192 11 4 S 22.18 W 18.88 1292 16 5 S 24.03 W 20.99 1392 22 6 S 24.68 W 22.91 1492 30 8 S 25.61 W 25.10 1592 40 10 S 23.34 W 26.4'0 1692 50 11 S 22.30 W 28.65 1792 63 13 S 21.60 W 31.10 1892 79 15 S 21.54 W 31.83 1992 96 17 S 22.83 W 33.93 2092 115 19 S 21.23 W 35.57 2192 137 22 S 21.53 W 37.17 2292 161 24 S 22.38 W 41.75 2392 190 29 S 22.84 W 45.86 2492 230 40 S 22.71 W 48.87 2592 277 47 S 23.73 W 51.72 2692 334 57 S 23.30 W 52.83 2792 398 63 S 23.30 W 52.55 2892 463 65 S 22.46 W RELATIVE COORDINATES FROM WELL HEAD 0.23 N 1.95 E 3.60 S 0.72 W 11.10 S 4.56 W 23.10 S 8.39 W 38.62 S 13.04 W 56.80 S 20.28 W 78.09 S 28.40 W 103.71 S 38.67 W 133.37 S 51.21 W 166.37 S 66.24 W 202.77 S 83.42 W 243.69 S 101.98 W 287.69 S 120.32 W 336.22 S 140.04 W 389.52 S 160.91 W 446.30 S 184.14 W 506.38 S 207.96 W 571.23 S 233.67 W 639.38.S 260.71 W 714.89 S 292.15 W 804.40 S 330.58 W 904.01 S 373.19 W 1015.27 S 420.98 W 1133.92 S 472.08 W 1255.34 S 522.57 W 2900 3519 52.35 2992 527 64 S 22.60 W 1375.35 S 572.89 W -21 Page DATA INTERPOLATED FOR 100 FT SUBSEA INTERVAL 8 04/19/91 UBSEA EPTH 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000 4100 4200 4300 4400 4500 4600 4700 4800 4900 5000 5100 5200 5300 5400 MEAS DEPTH 3683 3844 4004 4164 4335 4525 4716 4905 5096 5288 5485 5685 5888 6090 6294 6497 6701 6901 7104 7300 7497 7694 7889 8080 8268 INCLN TVD MD-TVD VERT DIRECTION ANGLE BKB DIFF CRRT BEARING 52.10 3092 590 63 S 22.30 W 51.56 3192 652 62 S 23.79 W 51.14 3292 712 60 S 23.96 W 51.80 3392 772 59 S 22.23 W 56.81 3492 843 '72 S 21.23 W 58.61 3592 933 90 S 23.28 W 58.20 3692 1023 91 S 23.31 W 58.46 3792 1113 90 S 23.98 W 58.60 3892 1203 90 S 24.00 W 59.19 3992 1296 92 S 23.70 W 60.09 4092 1393 97 S 24.05 W 60.19 4192 1493 100 S 24.33 W 60.~7 4292 1596 103 S 24.40 W 60.40 4392 1697 102 S 25.05 W · 60.67 4492 1801 104 S 27.33 W 60.60 4592 1905 104 S 26.10 W 60.42 4692 2009 103 S 26.77 W 60.32 4792 2109 100 S 26.74 W 60.08 4892 2212 103 S 26.12 W 59.22 4992 2308 96 S 27.06 W 59.53 5092 2404 97 S 26.23 W 59.34 5192 2502 97 S 27.50 W 58.76 5292 2596 95 S 27.06 W 58.26 5392 2687 91 S 26.50 W 57.66 5492 2776 88 S 26.18 W RELATIVE COORDINATES FROM WELL HEAD 1494.45 S 622.27 W 1611.30 S 672.11 W 1725.53 S 723.30 W 1839.82 S 771.95 W 1969.29 S 823.35 W 2118.17 S 885.19 W 2267.02 S 949.90 W 2414.53 S 1014.50 W 2563.01 S 1079.57 W 2713.50 S 1145.87 W 2868.52 S 1214.19 W 3026.55 S 1286.06 W 3187.38 S 1358.38 W 3346.75 S 1431.26 W 3505.80 S 1509.75 W 3664.67 S 1589.40 W 3823.36 S 1668.24 W 3977.82 S 1747.36 W 4136.54 S 1824.75 W 4286.57 S 1901.46 W 4438.66 S 1975.74 W 4590.04 S 2053.08 W 4737.94 S 2130.80 W 4883.75 S 2203.63 W 5027.27 S 2273.56 W 5500 8455 57.63 5592 2863 87 S 25.20 W 5169.46 S 2342.21 W P-21 Page 9 DATA INTERPOLATED FOR 100 FT SUBSEA INTERVAL 04/19/91 SUBSEA MEAS INCLN TVD DEPTH DEPTH ANGLE BKB MD-TVD VERT DIRECTION RELATIVE COORDINATES DIFF CRRT BEARING FROM WELL HEAD 5600 8641 57.10 5692 5700 8823 56.44 5792 5800 9003 55.99 5892 5900 9181 55.52 5992 6000 9358 55.91 6092 6100 9538 56.36 6192 6200 9717 56.10 6292 6300 9896 55.90 6392 6400 10075 56.10 6492 6500 10256 56.96 6592 6600 10441 57.37 6692 6700 10625 57.02 6792 6800 10807 55.92 6892 6900 10983 54.79 6992 7000 11156 54.97 7092 2948 86 S 24.50 W 5311.34 S 2407.91 W 3031 83 S 24.51 W 5450.31 S 2471.39 W 3111 80 S 23.75 W 5586.24 S 2533.16 W 3188 78 S ~24.09 W 5721.00 S 2591.66 W ~3265 77 S 25.49 W 5853.29 S 2653.45 W 3345 80 S 24.32 W~' 5989.05 S 2715.99 W 3425 80 S 24.71 W 6125.24 S 2777.41 W 3504 79 S 25.39 W 6259.52 S 2840.25 W 3583 79 S 27.20 W 6393.36 S 2904.55 W 3664 81 S 26.08 W 6528.91 S 2971.34 W 3749 84 S 25.55 W 6668.06 S 3039.72 W 3833 84 S 26.38 W 6807.65 S 3107.19 W 3915 82 S 28.20 W 6942.08 S 3177.46 W 3990 76 S 29.30 W 7068.82 S 3246.82 W 4064 73 S 30.57 W 7192.01 S 3316.85 W 7100 11329 54.50 7192 7200 11500 53.60 7292 7300 11666 52.55 7392 7400 11830 52.71 7492 7500 12006 57.02 7592 7600 12196 59.16 7692 7700 12395 60.54 7792 7800 12597 60.54 7892 7900 12801 60.90 7992 8000 13009 60.97 8092 4137 73 S 30.82 W 7313.67 S 3388.20 W 4207 71 S 31.63 W 7431.91 S 3460.06 W 4274 66 S 32.17 W 7544.99 S 3529.80 W 4338 64 S 33.90 W 7653.58 S 3601.40 W 4414 76 S 34.84 W 7773.40 S 3682.62 W 4503 90 S 35.62 W 7904.37 S 3776.40 W 4603 99 S 34.60 W 8043.71 S 3878.25 W 4704 101 S 34.82 W 8187.65 S 3977.60 W 4808 104 S 35.66 W 8332.95 S 4080.25 W 4917 109 S 35.75 W 8479.71 S 4189.59 W 8100 13212 59.56 8192 5020 103 S 33.78 W 8623.72 S 4291.71 W Page 10 DATA INTERPOLATED FOR 100 FT SUBSEA INTERVAL o4/19/91 ~UBSEA MEAS INCLN )EPTH DEPTH ANGLE TVD BKB 8200 13409 59.50 8292 8300 13605 59.11 8392 8400 13800 59.72 8492 8500 14003 61.59 8592 8600 14219 61.81 8692 8700 14431 61.22 8792 MD-TVD .VERT DIRECTION RELATIVE COORDINATES DIFF CRRT BEARING FROM WELL HEAD 5117 97 S 37.59 W 8762.45 S 4388.87 W 5212 96 S 39.45 W 8893.77 S 4494.06 W 5308 95 S 40.52 W 9022.49 S 4601.64 W 5411 103 S 42.28 W 9154.59 S 4718.77 W 5526 116 S 39.44 W 9299.42 S 4843.46 W 5639 112 S 38.87 W 9446.28 S 4960.01 W ~-21 " Page 11 DATA INTERPOLATED FOR 1000 FT MEASURED DEPTH INTERVAL o4/19/91 MEAS INCLN VERT-DEPTHS SECT DIRECTION REL-COORDINATES CLOSURE DEPTH ANGLE BKB SUB-S DIST BEARING FROM-WELLHEAD DIST BEARING 1000 11.96 995 903 60 S 21.83 W 57 S 2000 31.45 1917 1825 435 S 21.83 W 404 S 3000 51.35 2676 2583 1074 S 23.22 W 996 S 4000 51.16 3290 3197 1861 S 24.01 W 1722 S 5000 58.13 3842 3750 2691 S 23.35 W 2488 S DL/ 100 21 W 61 S 19.68 W 1.5 166 W 437 S 22.42 W ~0.5 413 W 1078 S 22.51 W 1.5 722 W 1868 S 22.74 W 0.8 1047 W 2700 S 22.82 W 0.7 6000 60.25 4348 4255 3552 S 24.55 W 3276 S 7000 60.57 4841 4749 4421 S 25.80 W 4055 S 8000 58.43 5350 5258 5282 S 26.50 W 4823 S 9000 55.99 5891 5798 6123 S 23.80 W 5584 S 10000, 56.10 6450 6358 6950 S 25.26 W 6337 S 1~000 54.78 7002' 6910 7784 S 29.30 W 7081 S 12000 56.94 7589 7497 8591 S 34.77 W 7769 S 13000 61.08 8088 7995 9448 S 36.00 W 8473 S 14000 61.51 8591 8499 10297 S 42.34 W 9153 S 1399 W 3562 S 23.12 W 0.3 1785 W 4431 S 23.76 W 0.1 2173 W 5290 S 24.26 W 0.2 2532 W 6131 S 24.39 W 1.3 2877 W 6960 S 24.42 W 1.8 3254 W 7793 S 24.68 W 0.1 3680 W 8596 S 25.34 W 1.5 4185 W 9450 S 26.28 W 2.4 4717 W 10297 S 27.27 W 3.0 T V- D <KB>O 5OO lo00 i500 2000 2500 3000 3500 4000 4500 5000 5500 8000 6500 7000 7500 8000 8500 VERTICAL SECTION VIEW BP EXPLORATION Section at: S 27 44 W , ! TVD Scale t inch = 1000 feet j A) KB 0 0 ' "I B) TD 14545 8849 i0765 "' " §000 iO00 INCLN 0.00 .20 0 iooo 2000 3000 4000 5000 6000 7000 Booo 9000 100o0 Section Departure land Di?~ctional L~?~'llin~, l'nc. Harker Iden~Ifica~ion ND N/S A! KB 0 0 N 0 8) TO ~4545 952! S 5024 PLAN VIEW BP EXPLORATION P-2~ CLOSURE ..... : 10766 ft S 27.82 DECLINATION.' 30.00 E SCALE · 1 inch = ~500 feet DRAWN ' 04/15/91 750 · ' 0 ~ 750 t500 2250 3000 3750 4500 5250 6000 675O 7500 8250 go00 975O 8250 7500 6750 6000 5250 4500 3750 3000 2250 t500 750 0 750 <- NEST · EAST -> TELEED Teleco Oilfield Sm I S of Alaska Inc. 6116 Nielsen Way Anchorage, AK 99502 (907) 562-2646 April 11, 1991 ORIGINAL JOB #813 BP EXPLORATION (ALASKA) INC. WELL: P-21 PRUDHOE BAY RIG: AUD #2 Attached please find a copy of the computer calculated MWD directional surveys for the above mentioned well. Teleco appreciates this opportunity to provide service to BP Exploration (Alaska) Inc. Teleco is committed to providing the highest quality MWD Service and we would welcome any comments or questions concerning these surveys or any of our other services. Sincerely, Jonathan G. Mapes Field Operations Supervisor JGM/el Enclosures RECEIVE[) r~4AY 2 1 ]99~ AJas~a Oil & Gas Cons. bui','!missto,~ ;Anchorage A ,~¢~I~T COMPANY TELECO OILFIELD SERVICES SURVEY CALCULATIONS Date 91-APR~IL-$ Company: BP EXPLORATION Well: P-21 Location: North Slope Rig: AUDI 2 TELECO Job # Grid Correction: Magnetic Declination: Total grid correction: Proposed Direction: 813TAK 0.0° 30.0° 30.0° 207.4 ° MINIMUM CURVATURE CALCULATION Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' Teleco MWD Surveys 0 0 0.0 0.0 0.00 -0.00 0.00N 0.00E 0.00 N 45.00E 0.00 414 414 0.3 86.3 414.00 -0.57 0.07N 1.0SE 1.09 N 86.06E 0.07 505 91 1.1 221.3 504.99 0.16 0.57S 0.74E 0.93 S 52.72E 1.46 594 89 3.7 212.8 593.91 3.85 3.62S 1.38W 3.88 S 20.80W 2.94 685 91 5.8 202.3 684.59 11.35 10.35S 4.71W 11.37 S 24.49W 2.49 PAGE 1 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' ******************************************************************************************************* 777 92 8.0 194.9 775.92 22.24 20.84S 8.12W 22.37 S 21.30W 2.58 867 90 9.6 197.0 864.86 35.74 34.08S 11.93W 36.11 S 19.30W 1.80 956 89 11.3 203.3 952.38 51.74 49.19S 17.55W 52.22 S 19.64W .2.30 1049 93 12.7 200.2 1043.35 70.97 67.15S 24.69W 71.54 S 20.19W 1.66 1141 92 15.2 201.9 1132.63 93.01 87.83S 32.68W 93.72 S 20.41W 2.75 1231 90 17.4 202.3 1219.01 118.16 111.23S 42.19W 118.97 S 20.77W 2.45 1325 94 19.2 204.4 1308.25 147.60 138.32S 53.91W 148.45 S 21.29W 2.04 1420 95 21.1 204.7 1397.43 180.28 168.08S 67.51W 181.13 S 21.88W 2.00 1514 94 22.7 205.8 1484.64 215.31 199.78S 82.47W 216.14 S 22.43W 1.76 1608 94 25.0 203.7 1570.61 253.28 234.31S 98.36W 254.12 S 22.77W 2.62 1702 94 25.4 202.3 1655.66 293.18 271.16S 113.99W 294.15 S 22.80W 0.76 1796 94 27.7 202.3 1739.74 335.03 310.03S 129.93W 336.16 S 22.74W 2.45 1890 94 29.2 201.2 1822.39 379.58 351.63S 146.52W 380.93 S 22.62W 1.69 1984 94 31.4 201.6 1903.54 426.74 395.78S 163.83W 428.34 S 22.49W 2.35 PAGE 2 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' 2081 97 31.7 203.0 1986.21 477.29 442.73S 183.09W 479.10 S 22.47W 0.82 2172 91 33.3 200.9 2062.95 525.95 488.08S 201.35W 527.98 S 22.42W 2.15 2279 107 35.2 201.9 2151.40 585.84 544.14S 223.33W 588.19 S 22.31W 1.85 2374 95 35 9 201.2 2228.69 640.78 595 51S 243.62W 643.42 S 22.25W 0.85 2468 94 37.4 202.6 2304.10 696.62 647.56S 264.56W 699 52 S 22.22W 1.83 2562 94 40.9 202.6 2376.99 755.75 702.35S 287.36W 758.86 S 22.25W 3.72 2656 94 44.8 203.7 2445.89 819.48 761.10S 312.51W 822.76 S 22.32W 4.22 2750 94 46.3 202.3 2511.72 886.38 822.87S 338.71W 889.86 S 22.37W 1.92 2844 94 48.3 204.0 2575.46 955.26 886.37S 365.89W 958.92 S 22.43W 2.51 2938 94 50.4 203.0 2636.70 1026.41 951.77S 394.33W 1030.22 S 22.50W 2.38 3023 85 51.7 203.3 2690.13 1092.32 1012.55S 420.32W 1096.32 S 22.54W 1.55 3118 95 52.3 203.3 2748.62 1166.99 1081.30S 449.93W 1171.18 S 22.59W 0.63 3213 95 53.0 203.3 2806.25 1242.32 1150.67S 479.81W 1246.70 S 22.64W 0.75 PAGE 3 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' 3307 94 52.6 201.9 2863.07 1316.92 1219.79S 508.58W 1321.57 S 22.63W 1.26 3401 94 52.5 203.0 2920.23 1391.27 1288.76S 537.09W 1396.19 S 22.62W 0.94 3495 94 52.4 202.6 2977.52 1465.55 1357.46S 565.97W 1470.72 S 22.63W 0.36 3589 94 52.2 202.6 3035.01 1539.66 1426.12S 594.55W 1545.09 S 22.63W 0.21 3684 95 52.1 202.3 3093.30 1614.39 1495.45S 623.20W 1620.11 S 22.62W 0.27 3778 94 51.7 203.3 3151.30 1688.11 1563.64S 651.86W 1694.08 S 22.63W 0.94 3872 94 51.5 204.0 3209.69 1761.62 1631.12S 681.42W 1767.73 S 22.67W 0.63 3967 95 51.3 204.4 3268.96 1835.74 1698.83S 711.86W 1841.95 S 22.74W 0.38 4060 93 50.9 203.3 3327.36 1907.98 1765.03S 741.13W 1914.31 S 22.78W 1.02 4154 94 51.5 202.3 3386.26 1980.99 1832.56S 769.51W 1987.57 S 22.78W 1.05 4248 94 54.3 201.6 3442.96 2055.61 1902.09S 797.52W 2062.52 S 22.75W 3.04 4342 94 57.0 201.2 3495.98 2132.78 1974.35S 825.84W 2140.11 S 22.70W 2.90 4437 95 58.7 203.0 3546.53 2212.87 2048.86S 856.11W 2220.53 S 22.68W 2.40 PAGE 4 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' 4531 94 58.6 203.3 3595.44 2292.92 2122.67S 887.68W 2300.81 S 22.69W 0.28 4626 95 58.3 203.7 3645.14 2373..68 2196.91S 919.96W 2381.76 S 22.72W 0 48 4719 93 58.2 203.3 3694.08 2452.58 2269.44S 951.49W 2460.83 S 22.75W 0.38 4819 i00 58.0 203.7 3746.92 2537.28 2347.30S 985.35W 2545.73 S 22.77W 0.39 4913 94 58.5 204.0 3796.38 2617.06 2420.41S 1017.68W 2625.65 S 22.80W 0.59 5007 94 58.1 203.3 3845.77 2696.86 2493.66S 1049.77W 2705.62 S 22.83W 0.77 5095 88 58.6 204.0 3891.95 2771.61 2562.28S 1079.82W 2780.52 S 22.85W 0.89 5192 97 58.5 203.7 3942.56 2854.20 2637.96S 1113.29W 2863.26 S 22.88W 0.29 5290 98 59.2 203.7 3993.25 2937.89 2714.75S 1147.00W 2947.12 S 22.90W 0.71 5384 94 59.2 203.7 4041.38 3018.46 2788.69S 1179.46W 3027.85 S 22.93W 0.00 5478 94 60.1 204.0 4088.88 3099.42 2862.87S 1212.26W 3108.96 S 22.95W 1.00 5572 94 60.0 204.7 4135.80 3180.75 2937.08S 1245.85W 3190.39 S 22.99W 0.64 5667 95 60.1 204.4 4183.22 3262.96 3011.95S 1280.05W 3272.67 S 23.03W 0.29 PAGE 5 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' 5767 100 60.6 204.0 4232.69 3349.73 3091.22S 1315.68W 3359.56 S 23.06W 0.60 5861 94 60.4 204.4 4278.98 3431.41 3165.84S 1349.23W 3441.36 S 23.08W 0.42 5956 95 60.3 204.4 4325.98 3513.86 3241.03S 1383.33W 3523.90 S~23.11W 0.10 6043 87 60.2 204.7 4369.15 3589.30 3309,73S 1414.72W 3599.41 S 23.14W 0.32 6138 95 60.6 205.4 4416.07 3671.82 3384.56S 1449.69W 3681.96 S 23.19W 0.77 6231 93 60.6 207.0 4461.73 3752.82 3457 25S 1485.47W 3762.87 S 23.25W 1.51 6325 94 60.7 207.5 4507.80 3834.76 3530.09S 1522.99W 3844.61 S 23.34W 0.47 6419 94 60.6 206.1 4553.88 3916.68 3603 22S 1559.93W 3926.40 S 23.41W 1.30 6521 102 60.6 206.1 4603.95 4005.52 3683.02S 1599.03W 4015.16 S 23.47W 0.00 6615 94 60.6 206.5 4650.09 4087.40 3756.44S 1635.31W 4096.96 S 23.53W 0.37 6710 95 60.4 206.8 4696.87 4170.08 3830.34S 1672.40W 4179.52 S 23.59W 0.34 6804 94 59.7 207.5 4743.80 4251.52 3902.81S 1709.56W 4260.81 S 23.66W 0.99 6897 93 60.3 206.8 4790.30 4332.06 3974.48S 1746.31W 4341.21 S 23.72W 0.92 PAGE 6 Company- BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' ******************************************************************************************************* 6973 76 60.6 205.8 4827.79~ 4398.16 4033.75S 1775,60W 4407.25 S 23.76W 1.21 7073 100 60.5 205.8 4876.95 4485.20 4112.15S 1813.50W 4494.28 S 23.80W 0.10 7169 96 59.2 206.8 4925.17~ 4568.19 4186.56S 1850.28W 4577.21 S 23.84W 1.63 7263 94 59.1 207.9 4973.37. 4648.89 4258.24S 1887.35W 4657.76 S 23.90W 1.01 7356 93 59.4 205.8 5020.93 4728.81 4329.55S 1923.45W 4737.58 S 23.95W 1.97~ 7450 94 59.5 205.8 5068.71 4809.72 4402.43S 1958.68W 4818.48 S 23.98W 0.11 7633 183 59.6 207.5 5161.45 4967.46 4543.42S 2029.44W 4976.07 S 24.07W 0.80 7726 93 59.2 207.5 5208.79 5047.51 4614.42S 2066 40W 5055.98 S 24.12W 0.43 7826 100 59.1 208.2 5260.07 5133.36 4690.33S 2106.50W 5141.65 S 24.19W 0.61 7919 93 58.6 206.5 5308.18 5212.94 4761.02S 2143.07W 5221.12 S 24.23W 1.65 8013 94 58.4 206.5 5357.30 5293.08 4832.75S 2178.83W 5301.20 S 24.27W 0.21 8108 95 58.2 206.5 5407.22 5373.90 4905.08S 2214.90W 5381.97 S 24.30W 0.21 8202 94 57.8 205.4 5457.03 5453.58 4976.76S 2249.78W 5461.65 S 24.33W 1.08 PAGE 7 Company: BP EXPLORATION, Well: .P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' 8295 93 57.6 206.5 5506.73 5532.16 ~ 5047.44S 2284.18W 5540.23 S 24.35W 1.02 8388 93 57.7 205.4 5556.49 5610.70 5118.08S 2318.56W 5618.76 S 24.37W 1.00 8487 99 57.6 -~-205.1 5609.47 5694.28 ~5193.73S 2354.23W 5702.39 S 24.38W 0.27 8581 94 57.3 204.7 5660.04 5773.43 5265.60S 2387.59W 5781.62 S 24.39W 0.48 8672 91 57.0 204.4 5709.40 5849.79 5335.14S 2419.36W 5858.07 S 24.39W 0.42 8764 92 56.7 204.7 5759.70 5926.72 5405.20S 2451.36W 5935.10 S 24.40W 0.43 8857 93 56.3 204.4 5811.03 6004.17 5475.74S 2483.59W 6012.65 S 24.40W 0.51 8951 94 56.1 204.7 5863.32 6082.19 5546.79S 2516.04W 6090.76 S 24.40W 0.34 9044 93 55.9 203.0 5915.33 6159.13 5617 30S 2547.22W 6167.86 S 24.39W 1.52 9145 101 55.6 203.7 5972.17 6242.40 5693.95S 2580.31W 6251.33 S 24.38W 0.64 9237 92 55.4 204.7 6024.28 6318.10 5763.10S 2611.39W 6327.14 S 24.38W 0.92 9331 94 55.8 205.8 6077.39 6395.60 5833.25S 2644.48W 6404.69 S 24.39W 1.06 9425 94 56.2 204.7 6129.96 6473.47 5903.73S 2677.72W 6482.61 S 24.40W 1.06 PAGE 8 .~Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' 9519 94 56.4 204.4 6182.11 6551.57 5974.87S 2710.21W 6560.81 S 24.40W 0.34 9613 94 56.2 204.0 6234.27 6629.66 6046.20S 2742.28W . 6639.02 S 24.40W 0.41 9715 102 56.1 204.7 6291.08 6714.24 6123.37S ~ 2777.21W 6723.73 S 24.40W 0.57 9806 91 56.0 205.1 6341.90 6789.66 6191.84S 2808.99W 6799.22 S 24.40W 0.38 9900 94 55.9 205.4 6394.52 6867.49 6262.29S 2842.22W 6877.09 S 24.41W 0.29 9994 94 56.1 205.1 6447.09 6945.36 6332.77S 2875.46W 6955.01 S 24.42W 0.34 10075 81 56.1 207.2 6492.27 7012.57 6393.11S 2905.09W 7022.21 S 24.44W 2.15 10170 95 56.5 205.8 6544.98 7091.59 6463.84S 2940.35W 7101.20 S 24.46W 1.30 10264 94 57.0 206.1 6596.51 7170.18 6534.53S 2974.75W 7179.78 S 24.48W 0.60 10359 95 57.2 206.5 6648.11 7249.93 6606.04S 3010.09W 7259.51 S 24.50W 0.41 10454 95 57.4 205.4 6699.43 7329.85 6677.93S 3045.07W 7339.43 S 24.51W 1.00 10548 94 57.1 205.8 6750.28 7408.87 6749.22S 3079.23W 7418.47 S 24.52W 0.48 10642 94 57.0 206.5 6801.40 7487.73 6820.03S 3114.00W 7497.32 S 24.54W 0.63 PAGE 9 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' ******************************************************************************************************* 10736 94. 56.6 208.2 6852.87 7566.38 6889.90S 3150.13W 7575.88 S 24.57W 1.58 10830 94 55.7 208.2 6905.23 7644.44 6958.70S 3187.02W 7653.79 S 24.61W 0.96 10978 148 11070 92 54.8 209.3 6989.59 7766.01 7065.31S 3245.50W 7775.08 S 24.67W 0.86 54.7 209.3 7042.69 7841,10 7130.83S 3282.27W 7849.97 S 24.72W 0.11 11165 95 55.0 210.7 7097.37 7918.70 7198.10S 3321.11W 7927.32 S 24.77W 1.25 11259 94 ~54.5 210.0 7151.62 7995.37 7264.34S 3359.91W 8003.73 S 24.82W 0.81 11353 94 54.5 211.1 7206.21 8071.78 7330.24S 3398.81W 8079.87 S 24.88W 0.94 11447 94 54.0 211.4 7261.12 8147.90 7395.46S 3438.39W 8155.70 S 24.94W 0.58 11539 92 53.3 211.8 7315.64 8221.81 7458.58S 3477.22W 8229.30 S 25.00W 0.85 11633 94 52.7 211.4 7372.21 8296.69 7522.52S 3516.55W 8303.88 S 25.05W 0.72 11724 91 52.3 213.5 7427.61 8368.60 7583.44S 3555.29W 8375.47 S 25.12W 1.88 11827 103 52.6 213.9 7490.39 8449.77 7651.37S 3600.59W 8456.23 S 25.20W 0.42 11920 93 55.9 213.9 7544.72 8524.76 7714.01S 3642.69W 8530.83 S 25.28W 3.55 PAGE 10 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' ******************************************************************************************************* 12012 92 57.1 214.9 7595.49 8600.91 7777 31S 3686.03W 8606.59 S 25.36W 1.59 12106 94 58.3 216.0 7645.72 8679.58 7842.02S 3732.12W 8684.82 S .25.45W 1.62 12200 94 59.2 215.6~ 7694.49 8759.09 7907.20S 3779.13W 8763.88 S 25.54W 1.03 12293 93 59.9 217.4 7741.62 8838.26 7971.64S 3826.82W 8842.60 S 25.64W 1.83 12387 94 60.6 214.6 7788.27 8918.94 8037.66S 3874.78W 8922.88 S 25.74W 2.69 12481 94 59.9 214.6 7834.92 8999.92 8104.83S 3921.12W 9003.53 S 25.82W 0.75 12576 95 60.5 214.6 7882.13 9081.71 8172.69S 3967.93W 9085.01 S 25.90W 0.63 12669 93 60.7 215.6 7927.78 9162.01 8238.98S 4014.52W 9165.00 S 25.98W 0.96 12761 92 60.6 214.9 7972.88 9241.46 8304.46S 4060.80W 9244.14 S 26.06W 0.67 12855 94 61.3 216.7 8018.52 9322.75 8371.10S 4108.87W 9325.14 S 26.14W 1.83 12948 93 61.7 217.4 8062.90 9403.33 8436.33S 4158.11W 9405.40 S 26.24W 0.79 13041 93 60.6 214.9 8107.78 9483.84 8502.09S 4206.17W 9485.64 S 26.32W 2.63 13135 94 60.7 216.3 8153.85 9564.94 8568.71S 4253.86W 9566.52 S 26.40W 1.30 PAGE 11 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' L3230 95 59.3 213.2 8201.36 9646.53 8636.29S 4300.76W 9647.90 S 26.47W 3.19 L3319 89 59.5 214.9 8246.67 9722.62 8699.76S 4343.65W 9723.84 S 26.53W 1.66 k3426 107 59.5 218.1 8300.99 9813.65 8773.85S 4398.48W 9814.64 S 26.63W 2.58 13518 ~3612 92 59.2 218.8 8347.89 9891.34 8835.84S 4447.70W 9892.12 S 26.72W 0.73 94 ~59.1 219.5 8396.09 9970.36 8898.42S 4498.65W 9970.94 S 26.82W 0.65 13706 94 59.0 219.8 8444.43 10049.16 8960.49S 4550.09W 10049.57 S 26.92W 0.29 13798 92 59.7 220.5 8491.32 10126.36 9020.99S 4601.13W 10126.63 S 27.02W 1.00 13892 94 60.4 221.3 8538.25 10205.57 9082.55S 4654.45W 10205.72 S 27.13W 1.05 13981 89 61.0 222.7 8581.80 10280.70 9140.23S 4706.39W 10280.76 S 27.24W 1.53 14075 94 63.5 220.9 8625.56 10361.28 9202.25S 4761.82W 10361.29 S 27.36W 3.14 14168 93 61.7 220.2 8668.36 10441.69 9264.98S 4815.50W 10441.69 S 27.46W 2.05 14261 93 61.9 218.8 8712.31 10521.84 9328.22S 4867.63W 10521.86 S 27.56W 1.34 14353 92 62.3 217.7 8755.36 10601.70 9392.07S 4917.96W 10601.77 S 27.64W 1.14 PAGE 12 Company: BP EXPLORATION, Well: P-21, Location: North Slope, Riq: AUDI 2 Meas Course True Vertical Coordinates Closure Dog Leg Depth Length Incl Azi Vert. Dp. Section N/S E/W Distance Angle Severity feet feet deg deg feet feet feet feet feet deg deg/100' ******************************************************************************************************* 14447 94 '61.0 219.1 8799.99 10682.92 9456.91S 4969.34W 10683.05 S 27.72W 1.90 14545 98 59.2 222.1 8848.84 10765.63 9521.41S 5024.61W 10765.87 S 27.82W 3.23 PAGE 13 TELJCO Oi 1 f ~ e I d PLAN VIEW Sepvice~ 1600 BP EXPLORATION P-21 o'~~ North Slope ~89o AUDI 2 , JOB# 8,3TAK/00 s 2562. ~/ SCALE: ~8~/ 1 inch = 1600 feet 3589 ~/ j 8764 "~ 9237 '~ 10170~ 10642./~/ iii65+~ 1600 3200 4800 co 0 6400 80O0 9600 1~200 12800 8000 6400 4800 3200 1600 0 WEST (ft) 1600 2000 4000 ~6000 i 08000 >lO000 t2000 14000 16000 18000 TEL ~-~00ilfield Sepvices VERTICAL PROJECTION -1000 1000 3000 5000 7000 9000 11000 414 ' .3 deg 867 ' 9.6 deg 1325 ' 19.2 deg 796 ' 27.7 deg .279 ' 35.2 deg ~,x~.44 ' 48.3 deg ~x~.495 ' 52.4 deg ~,~.54 ' 51.5 deg BP EXPLORATION P-21 North Slope AUDI 2 JOB# 813TAK/O0 SCALE: 1 inch = 2000 feet deg 1 .3 (:leg ' 59.01 4545 ' deg 59.2 VERTICAL SECTION (ft) BP EXPLORATION To: Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Date: June 30, 1993 Attention: David W. Johnston Chairman Subject: P-21 Waiver of reouirements 20 AAC 25.110 BP Exporation requests a waiver to the requirements of a bridge plug between 200 feet and 300 feet as required in 20 AAC 25.110 This would enable the well to be utilized as a service well. Potential proposed uses for P-21 as a service well include but are not limited to the following: · Seasoning new E-line by running it in and out of the hole without well head pressure. · Training operators and other personnel on coiled tubing, E-line and slickline operations. · Testing new technology such as inflatable packers · Conducting drills on safety, environmental and Incident Command System procedures. Yours Sincerely, Drilling Engineer Supervisor MS Randy Frazier Well file RECEIVED J U I_ - 2. ~995 Alaska Oil & Gas Cons. CommiSSiOn Anchorage 1. Type of Request: 2. Name of Operator BP Exploration "'~'T" ~ STATE OF ALASKA AI_~..oKA OIL AND GAS CONSERVATION COMMIS$,,-,N APPLICATION FOR SUNDRY APPROVALS Abandon ~ Suspend ~ Operation Shutdown . _. Re-enter suspended well x x Alter casing ~ Repair well~ Plugging '" Time extension ~ Stimulate Change approved program ~ Pull tubing ,, Vadance ~ Perforate ~ 5. Type of Well: 6. Development X Exploratory ~ Stratigraphic 7. Service 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 3019' SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval N/A At effective depth N/A At total depth 2319' SNL, 3505' WEL, SEC. 12, TION, R12E 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Other x Datum elevation (DF or KB) KBE=92.4' feet Unit or Property name Prudhoe Bay Unit 8. Well number P-21(22-12-10-12) 9. Permit number 91-40 10. APl number 50- 029-22148 11. Field/Pool Prudhoe Bay Field~Oil Pool 15173' feet Plugs (measured) 9172' feet BKB n/a feet Junk (measured) feet 15173'- 14 773'(134 sx); 14773'- 14373' (134 Sx) & 14496'-14096 (134 sx) Casing Length Structural Conductor 80' Surface 2967' Intermediate 14590' Production Liner Perforation depth: measured none Size 20' 13-3/8" 9-5/8" true vertical none Tubing (size, grade, and measured depth) none Packers and SSSV (type and measured depth) none Cemented Measured depth True vertical depth bkb 131' 131' 4292 cu ft Permafrost 2997' 2670' 3315 cuft Class G 14620' 8892' RE( EIVED J U L - 2 1993 Alaska Oil & Gas Cons. 6ornn-fissio¢ Anchorage 13. Attachments Description summary of proposal ~ Detailed operations program BOP sketch 14. Estimated date for commencing operation 16. If proposal was verbally approved Oil~ Gas ~ Name of approver Date approved Service 17. I hereby~rtify that the for 9lng is ~~ect to the best of my knowledge. Signed ~'''~-~J~Jb~ ~~~ -- ~'~ Title Drilling Engineering Supervisor FOR COMMISSION USE ONLY 15. Status of well classification as: Suspended x Date ~/~O/~ Conditions of approval: Notify Commission so representative may witness Plug integrity BOP Test~ Location clearance ~ Mechanical Integrity Test ~ Subsequent form required 10- ~'¢)~ Approved by order of the Commission Form 10-403 Rev 06/15/88 Original $~gned By rt a~¢id W I Approval .o.? -., ..... ' ..... '~ Copy ',i-- ? ~" '~ ~; Returned Commissioner-- .... The purpose of this sundry application is to convert well P-21 from a suspended status to a service well. Potential proposed uses for P-21 as a service well include but are not limited to the following: · Seasoning new E-line by running it in and out of the hole without well head pressure. · Training operators and other personnel on coiled tubing, E-line and slickl!rte operations. · Testing new technology such as inflatable packers Conducting drills on safety, environmental and Incident Command System procedures. REEEIVED J U L - ~ ~.99~ Alaska Oil & Gas Cons. Oommissio~ Anchorage '-'-T" STATE OF ALASKA ALAoKA OIL AND GAS CONSERVATION COMMISS,~N APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon__ Alter casing ~ Change approved program 2. Name of Operator BP Exploration Susp~3d xx Operation Shutdown ~ Re-enter suspended well~ Repair well ~ Plugging Time extension ~ Perforate Pull tubing ~ Variance ~ 5. Type of Well: Development X Exploratory ~ Stratigraphic ~ Service O i tt, 4L 15173' feet Plugs (measured) 9172' feet BKB 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 nlm feet Junk (measured) feet 4. Location of well at surface 3019' SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval N/A At effective depth N/A At total depth 2319' SNL, 3505' WEL, SEC. 12, TION, R12E 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Stimulate Other 6. Datum elevation (DF or KB) KBE=92.4' feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number P-21(22-12-10-12) 9. Permit number 91-40 10. APl number 50- 029-22148 11. Field/Pool Prudhoe Bay Field/Oil Pool 15173'- 14773'(134 sx);14773'- 14373' (134 Sx) & 14496'-14096 (134 sx) Casing Length Structural Conductor 80' Surface 2967' Intermediate 14590' Production Liner Perforation depth: measured none Size 20' 13-3/8" 9-5/8" true vertical none Tubing (size, grade, and measured depth) none Packers and SSSV (type and measured depth) none Cemented Measured depth True vertical depth bkb 131' 131' 4292 cu fl Permafrost 2997' 2670' 3315 cu ft Class G 14620' 8892' RE([E[VED d u L - 2 ,Alaska 0il & Gas Cons. c0m~tSs[0t~ Anchorage 13. Attachments Description summary of proposal x Detailed operations program BOP sketch 14. Estimated date for commencing operation 16. If proposal was verbally approved Name of approver Date approved 15. Status of well classification as: Oil x Gas Suspended __ Service 17. I hereby ce~rtify that the foregoing is trNe an~correct to the best of my knowledge. Signed Title Drilling 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-'~¢~ .... Approved by order of the Commission Form 10-403 Rev 06/15/88 Original Signed By t3~vid W. ,Jnhnntnn .* .... .~, w ,.~ ,,,,, v *.,, ~. j, Rc;'~,u rned Commissioner Date SUBMIT IN ~RIPLICATE Well P-21 July 1, 1993 Well P-21 was drilled in March-April, 1991. The anticipated hydrocarbon structure was less than originally predicted due to a TSAD that was 42' deep and an OWC which came in approximately 40' shallow. Our most optimistic geologic assessment yields an OOIP of only 1.4 MMSTB. This is insufficient to make the well economical. As a last option, it was thought that P-21 may have been drilled off structure and therefore, there could be upside potential in a nearby sidetracked well. To better determine the potential of sidetracking P-21, a Gyro Survey was run. The results from the Gyro showed that P-21 was drilled on structure. This additional data, and a local geologic description which shows a sharply truncated triangular drainage area, suggests that there is little upside potential near P-21. The decision was made to not complete the well. A suspension is requested with a waiver for the top plugs to enable the well to be utilized in the future as a testing and training environment. REEE!VED J U L "- ~ t99;~ Alaska Oil & Gas Cons. Commissio~ ;Anchorage 1. Operations performed: Operation shutdown Pull tubing 2. Name of Operator BP Exploration 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 ~KA OIL AND GAS CONSERVATION COMMISS,,,.,,i __l.l~Z~l i~Jl~ ~ l~l~- REPORT OF SUNDRY WELL Stimulate . Plugging Perforate Alter casing Repair well ¢~~Other x suspended .~ 5. Type of Well: "'~~ 6. ~(D'F or KB) Development × KBE-92.4' feet Exploratory Strafigraphic 7. Unit or Property name Service Prudhoe Bay Unit 4. Location of well at surface 3019'SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval N/A At effective depth N/A At total depth 2319' SNL, 3505' WEL, SEC. 12, TION, R12E 12. Present well condition summary Total depth: measured true vertical Effective depth: measured · true vertical 8. Well number P-21(22-12-10-12) 9. Permit number/approval number 91-40 10. AP! number 50- 029-22148 11. Field/Pool Prudhoe Bay Field~Oil Pool Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: 15173' 9172' n/a feet Plugs (measured) feet BKB feet Junk (measured) feet Length 80' 2967' 14590' measured none 15173'-14773' (134 sx);14773'-14373' (134 Sx) & 14496'-14096 (134 sx) Size 20' 13-3/8" 9-5/8" true vertical none Cemented Measured depth True vertical depth bkb 131' 131' 4292 cuft Permafrost 2997' 2670' 3315 cu ft Class G 14620' 8892' Tubing (size, grade, and measured depth) none Packers and SSSV (type and measured depth) none 13. Stimulation or cement squeeze summary Intervals treated (measured) -:. Treatment description including volumes used and final pressure 14. Prior to well operation Subsequent to operation RE( EIVED d:,,:_': - 2 199;5 A[aska Oil & Gas Cons. Oommissio~ Anchorage Representative Daily Average Production or Injection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure 15. Attachments 16. Status of well classification as: Copies of Logs and Surveys run Daily Report of Well Operations Oil X Gas Suspended e foregc~ng is true__~,~d correct to the best of my knowledge. ~,~?~_.~_y_~,~.2 Title Dr//ling En~ineerin~ Supervisor Tubing Pressure Service Date SUBMIT IN DUPLICATE ?~. ~/EWE DRILLING PRO.G__. ;AM WELL BORE DIAGRA,~ WELL P-21 [22-12-10-12'1 RECEIVED It4A ¥ £ 1 t99t Alaska Oil & Gas Gons. 6ummJssJon Anchorage 20" Conductor One joint of 4-1/2" Tubing 110' 13-3/8" 68# NT-80 Bultress 4292 cu. ft. Permafrost 2997' 9-5/8" 47# NT-80S NSCC RECEIVED d U I_ - 2 ~99;~ Alaska Oil &. Gas Cons. 6ommissio~ Anchorage Top of Cement Plugs 14096' ,_ 9-5/8" CASING: 14620' 3315 cu.ft. Class G 8-1/2" Hole TD 15173' BP EXPLORATION ARCO Alaska, Inc. '~~' To: Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Date: June 23, 1993 Attention: David W. Johnston Chairman Subject: P-21 Waiver of requirements 20 AAC 25.110 BP Exporation requests permission to change the status of well P-21 from operation shutdown to a suspended status including a waiver to the requirements of a bridge plug between 200 feet and 300 feet as required in 20 AAC 25.110 This would enable the well to be utilized as a service well. Potential proposed uses for P-21 as a service well include but are not limited to the following: Seasoning new E-line by running it in and out of the hole without well head pressure. Training operators and other personnel on coiled tubing, E-line and slickline operations. Testing new technology such as inflatable packers Conducting drills on safety, environmental and Incident Command System procedures. Yours Sincerely, Bill Kirton Drilling Engineer Supervisor MS CC. Randy Frazier Well file RECEIVED J UN ~ 8 1995 Alaska Oil & Gas Cons. C;ommissio~ Anchorage STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon ~ Suspend __ Operation Shutdown __ Re-enter suspended well Alter casing ~ Repair well~ Plugging Time extension ~ Stimulate ~ Change approved program Pull tubing ~ Variance ~ Perforate ~ Other x x 2. Name of Operator BP Exploration 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 3019' SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval N/A At effective depth N/A At total depth 2319' SNL, 3505' WEL, SEC. 12, TION, R12E 12. Present well condition summary Total depth: measured Effective depth: Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: true vertical measured true vertical Length 80' 2967' 14590' measured e true vertical Tubing (size and measured ~See aaached 5. Type of Well: Development X Exploratory Stratigraphic Service 15173' feet Plugs (measure~ ~ n/a feet Junk (measured) ~ Size~ Ce~nted Measured~th True vertical depth 13'~8" 4292 cu fl Perm~rost 2997' 2670' 9-~" ~15 cu fl Clals G 14620' 8892' ska 0~1 & Cas Cons commi~aio~ Anchorage 6. Datum elevation (DF or KB) KBE,,92.4' feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number .~~-12-10-12) ' 9. Permit n-"~r 9-/-40 q0. APl number \$o- j 11 .~eld/Pool P~/~oe Bay ~eld/Oil Pool Packers and and measured de ) none 13. Attachments 14. Estimated date for summary of Service proposals operation 16. If proposal was verbally approved Detailed operations program 15. Status of well classification as: BOP sketch Oil Gas Name of approver Date approved Service 17. I hereby ce~ify t.h,at ~e fo~goin, g is true and correct to the best of my knowledge. Signed~ "-~ Title Drilling Engineering Supervisor FOR COMMISSION USE ONLY Suspended x Conditions of approval: Notify Commission so representative may witness Plug integrity ~ BOP Test~ Location clearance ~ Mechanical Integrity Test ~ Subsequent form required 10- [ Approval N o/~,.~,_ / Approved by order of the Commission Commissioner Date Form 10-403 Rev 06/15/88 :; SUBMIT IN TRIPLICATE The purpose of this sundry application is to convert well P-21 from a suspended status to a service well. Potential proposed uses for P-21 as a service well include but are not limited to the following: · Seasoning new E-Hne by running it in and out! fie head pressure. · Training operators and other pets coiled slicldine operations. E-line Testing new technology such as inflatable Conducting drills on s~~;~ ~nvir~,~,mental and System procedures. .dent Command well RECEIVED J UN 1 '~ 199~ Alaska Oil & Gas Cons. Oommissio[~ Anchorage BP EXPLORATIOn7~% ^COCO Commissioners R.B. l-razier Supervisor, WF/MI Petroleum Engineering Application for Renewal of Suspension for Well P-21 It h~3 recently come to our a'tte;~don that the approval for suspension of well P-21 expired in May of this year, Well P-.21 was drilled in March-April 1991. It was not compluted, as the anticipated hydrocarbon structure was approximately 80" less than originally'predicted. This made completion'of the well uneconomic. .During the past year, drilling technotngY has advanced such that, in the near future, drilling with coiled tubing could make it economic to drill a horizontal sidetrack from this well. Whereas, with current technology, wc would have to abandon the reserves from this area. For this reason we request permission to leave this well suspended until 1/1/94, We apulugise for the ~nadvertent delay in liting this request. Questions should be directed to Lynda Hutchins at 564-4370, /~~.~incerely, R.B, Frazicr RL CEIVFr Alaska Oil & %., Anchorage ., ALASKA OIL AND GAS CONSERVATION COMMISSION WALTER J. HICKEL, GOVERNOR 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 TELECOPY: (907) 276-7542 March 10, 1993 Randy Frazier, SuperviSor Waterflood/Miscible Flood BP Exploration (Alaska) Inc. P. O. Box 196612 Anchorage, Alaska 99519-6612 Re: Request to renew suspension, PBU P-21 q J Dear Mr. Frazier: On May 22, 1991 the Cmmission approved an operation shutdown of Prudhoe Bay Unit well P-21. The provisions of 20 AAC 25.072 allows for shutdown of well operations for a period of 12 months with no provisions for time extension. Therefore the Commission cannot approve your November 4, 1992 request to extend the shutdown of operation for the P-21 well. However, the Commission would consider an application to suspend the well pursuant to the requirements of 20 AAC 25.110 and any exceptions that may be necessary. If you would care to discuss this further please contact Russ or myself at 279-1433. Sincerely Chairman STATE OF ALASKA '"',LASKA OIL AND GAS CONSERVATION COl'' '3SION APPLIbATION FOR SUNDRY t. PPROVALS 1. Type of Request: Abandon ... Suspend Operation Shutdown ~ Re-enter suspended well Alter casing __ Repair well Plugging _ . Time extension ._,X__ Stimulate Change approved program Pull tubing Variance Perforate ~ Othe~' _ 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 5. Type of Well: Development Exploratory Stratigraphic Service 6. Datum elevation (DF or KB) KBE=92.4 feet 7. Unit or Property name Prudhoe Bay Unit 4. Location of well at surface 3019'SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval 9. N/A 8. Well number P-21(22-12-10-12) Permit number 91-40 At effective depth N/A At total depth 2319' SNL, 3505' WEL, SEC. 12, TION, R12E 10. APl number 50- 029.22148 11. Field/Pool Prudhoe Oil Pool 12. Present well condition summary Total depth: measured true vertical 15'173' feet 9172' feet Plugs (measured) 15173'-14773'(134sx);14773'-14373'(134 Sx) & 14496'- 14096(134 sx) Effective depth: measured true vertical Casing Length Structural -- Conductor 80' Surface 2967' Intermediate 14590' Production Liner Perforation depth: measured none true vertical subsea none Tubing (size, grade, and measured depth) none Packers and SSSV (type and measured depth) none N/A feet Junk (measured) feet Size Cemented 20" 13 3/8" 4292 cuft Permafrost 9 5/8" 3315 cuft C/ass G Measured depth True vertical depth BKB 131' 131' 2997' 267O' 14620' 8892' N 0V - 9 Alaska 0il & Gas Cons. 60mmissior~ A~ch0rage 13. Attachments Description summary of proposal ~ Currently under consideration for Sidetrack Detailed operations program ~ BOP sketch 14. Estimated date for commencing operation January 1994 16. if proposal was verbally approved Oil X Gas Name of approver Date approved Service 17.1 hereby/b~rtify that the f~oi~ i~ true and correct to the best o! my knowledge. Signed ,~~[.~v/¢'~, ~~~/~-~, Title Supervisor, WatedloodOpsEngr O - FOR COMMISSION USE ONLY Conditions of approval: Notify CommissiOn so representative may with'eSS Plug integrity_ BOP Test__ Location clearance __ Mechanical Integrity Test__ Subsequent form required 10- 15. Status of well classification as: Suspended__ Fr' Date IApproval No. Approved by order of the Commission Commissioner Date Form 10-403 Rev 06/15/88 SUBMIT IN TRIPLICATE STATE OF ALASKA A~L ,., ILAND GAS CONSERVATION COMMISSK REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdoWn X Stimulate Plugging Perforate Pull tubing Alter casing Repair well Other 2. Name of Operator BP Exploration 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 3019'SNL, 2987'WEL, SEC. 31, T11N, R13E At top of productive interval N/A At effective depth N/A At total depth 2319' SNL, 3505'WEL, SEC. 12, TION, R12E 12. Present well condition summary Total depth: measured true vertical measured true vertical Effective depth: 5. Type of Well: Development X Exploratory Stratigraphic Service 6. Datum elevation (DF or KB) KBE =92.4' feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number P-21(22-12-10-12) 9. Permit number/approval number 91-40 10. APl number 50 - 029-22148 15173' feet Plugs (measured) 9172' feet BKB n/a feet Junk (measured) feet 11. Field/Pool Prudhoe Bay Field/Oil Pool Casing Length .Structural ~' Conductor 80' Surface 2967' Intermediate 14590' Production Liner Perforation depth: measured none Size 20' 13-3/8" 9-5/8" 15173'-14773' (134 sx);14773'-14373' (134 Sx) & 14496'-14096 (134 sx) true vertical none Tubing (siZe, grade, and measured depth) none Packers and SSSV (type and measured depth) none 13. Stimulation or cement squeeze summary Cemented Measured depth True vertical depth bkb 131' 131' 4292 cu ft Permafrost 2997' 2670' 3315 cu ft Class G 14620' 8892' Intervals trea. ted (measured) Treatment description including volumes used and final pressure 14. Tubing Pressure Prior to well operation Subsequent to operation 15. Attachments Copies of Logs and Surveys run )<. Daily Report of Well Operations × Re.oresentative Daily Average Production or In!ection Data OiI-Bbl Gas-Md Water-Bbl Casing Pressure Service 16. Status of well classification as: Oil × Gas Suspended Date SUBMIT IN DUPLI(~ATE 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed ~;~'~ .,/~/'~/~/~--- Title Drillin~lEn~lineerinclSupervisor Form 10-404 Rev 06/15/88 '~" STATE OF ALASKA ALAS,~^ OIL AND GAS CONSERVATION COMMISSioN REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown X Stimulate Plugging Perforate Pull tubing Alter casing Repair well Other 2. Name of Operator BP Exploration 3. Address P. 0. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 3019' SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval N/A At effective depth N/A At total depth 2319' SNL, 3505'WEL, SEC. 12, TION, R12E 5. Type of Well: Development X Exploratory Stratigraphic Service 6. Datum elevation (DF or KB) KBE =92.4' feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number P-21(22-12-10-12) 9. Permit number/approval number 91-40 10. APl number 50 - O29 -22148 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical 15173' feet Plugs (measured) 9172' feet BKB n/a feet Junk (measured) feet 11. Field/Pool Prudhoe Bay Field/Oil Pool CaSing Length .Structural '~ Conductor 80' Surface 2967' Intermediate 14590' Production Liner Perforation depth: measured none Size 20' 13-3/8" 9-5/8" 15173'- 14773' (134 sx); 14773'-14373' (134 Sx) & 14496'-14096 (134 sx) true vertical none Tubing (size, grade, and measured depth) none Packers and SSSV (type and measured depth) none 13. Stimulation or cement squeeze summary Cemented Measured depth True vertical depth bkb 131' 131' 4292 cuft Permafrost 2997' 2670' 3315 cu ft C/ass G 14620' 8892' RECEIVED Intervals treated (measured) Treatment description including volumes used and final pressure 14. Alaska 0il & Gas G0ns. Anchorage Tubing Pressure Prior to well operation Subsequent to operation 15. Attachments Copies of Logs and Surveys run X Daily Report of Well Operations X Representative Daily Average Production or In!ection Dat~ OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure Service 16. Status of well classification as: Oil X Gas Suspended Date SUBMIT IN DUPLI(~ATE 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Form 10-404 Rev 06/15/88 BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE BAY UNIT As of 0600 Hrs. Tuesday. March 19. 1991 WELL: P-21 (22-12-10-12), AP! No. 50-029-22 Day: -..!1 ." Rig: Depth at 0600 Hrs. = O Ft. AFE Number: 24 Hour Footage = O Ft. AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig ~,2 125396 Current ,,Operation' Summary of Last Move rig to P-21. Moving rig. 24 Hours' Weight g/gal Viscosity Sec. P V. YP Fluid Loss Solids, Temo cc °F Survey Depth Anqle Direction N (+)/S (-) .E(+)AN(-) Dog ,Leg TVD Section Coordinate Coordinate °/100' RECEIVED MAY 2 ] t991 Alaska 0il & Gas Cons. bommissio~ Anchorage Reviewed By: PC, BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE BAY UNIT As of 0600 Hrs. Wednesday, March 20. 1991 WELL: P-21 (22-12-10-12) AP! No. 50-029-22148 Day: 1 Depth at 0600 Hrs. = 24 Hour Footage = Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Ala, ska, United Rig #2 125396 Current Operation: Mix spud mud. Summary_ of Last 24 Hours: Skidded rig to P-21. Accepted rig at 0100 hrs on 3/20/91. Pick up BHA and mix spud mud. MudType . Mud weight Viscosity P V Yp ~ Solids Temo ' #/gal Sec. cc °F Survey Depth Angle Direction TVD N (+)/S (-) E(+)/M/(-) J~ Section Coordinate Coordinate °/100' Reviewed By: .PC, BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE BAY UNIT As of 0600 Hrs. Thursday, March 21, 1991 WELL: P-21 (22-12-10-12), APl No. .: 50-029-22148 Day: 1_ Depth at 0600 Hrs. = 24 Hour Footage = 1..,078 Ft. 968 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125396 Current Operation' Drilling. Summary of Last 24 Hours: Mixed spud mud. Spudded at 0945 hrs on 3/20/91. Drilled to 1078'. Mud Type Mud Weight Viscosity Spud Mud 9.2 #/gal 228 Sec. PV YP Fluid Loss Solids 40 56 9.8 cc 7% Temp 57 OF Survey, Depth Angle. Direction TVD 7 956 11.30 S23.3W 952 N (+)/S (-) E(+)/W(-) Section Coordinate Coordinate 52 -49 -18 pog Leg °/100' 2.30 Reviewed By' PC BP EXPLORATION DAILY DRILLING REPORT: As of 0600 Hrs. Friday. March 22. 1991 WELL: P-21 (22-12-10-12) (ALASKA), INC. PRUDHOE BAY UNIT APl No. 50-029-221 48 Day: 2 Depth at 0600 Hrs. = 24 Hour Footage = 2,468 Ft. 1,39O Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125396 Current Operation' Summary of Last Drilled to 2468'. Drilling ahead. 24 Hours: Mud Tvoe . . Spud Mud Mud Weiaht 9.4 #/gal Viscosity 205 Sec. PV YP Fluid Loss Solids 28 47 12.6 cc 8% Te. mp 57 OF Survey Depth Angle 22 2,374 35.90 Direction S21.2W TVD 2,228 N (+)/S (-) .E(+)/VV(-) Section Coordinate Coordinate 64O -595 -243 Dog Leg 01100' O.8O Reviewed By: P,,C BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRIJDHQE BAY UNIT As of 0600 Hrs. Monda, y. March 25. 1991 WELL: P-21 (22-12-10-12) AP! No. ,,50-029-22148 Day: ,5 Depth at 0600 Hrs. = 72 Hour Footage = 5,369 Ft. 2.901 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 1 25396 Current O0eration: Drilling ahead. Summary of Last 72 Hours: Ran and cemented 13-3/8" casing. NU and tested BOPE. Ddlled float equipment and 10' of new hole. FIT = 13.1 ppg. Ddlled 12-1/4" hole to 5369'. ..Mud 'l'~vpe'-- Mud Weight Viscosity P V YP Fluid Loss Solids Tem.D Dispersed 9.5 #/gal 37 Sec. 9 8 7.2 cc 9% 78 °F .N (+)IS (-) E(+)/W(-) Dog Leg Survey ~ Angle Direction TVD Section Coordinate Coordinate °/100' 50 5,007 58.10 S23.3W 3,844 2,697 -2,494 -1,040 0.70 Reviewed By: PC BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE, BAY UNIT As of 0600 Hrs. T~esday. March 26.1991 WELL: P-2I (22-12-10-12) APl No. .50-029-22148 Day: .6. Depth at 0600 Hrs. = 24 Hour Footage = 7,090, Ft. ,,11721 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = AJask. a United ,Rig #2 125396 Current Operation' Summary_ of Last Drilled to 7090'. Drilling ahead. 24 Hours: Mud Ty0e Dispersed Mud Weight 9.6 #/gal Viscosity 40 Sec. PV yp Fluid Loss Solids Temp 1 0 9 5.4 cc 10% 82 °F Survey Depth 69 6,8O4 Anale -- 59.70 Directi(~n S27.5W 4,742 N (+)/S (-) E(+)./VV(-).. Dog Leg Section Coordinate Coordinate ,°/100' 4,252 -3,903 -1,709 0.90 Reviewed By: PC BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE BAY UNIT As of 0600 Hrs. W~dnesday. March 27. 1991 WELL: P-21 (22-12-10-12) APl No. 50-029-22148 Day: 7_ Depth at 0600 Hrs. = 24 Hour Footage = 8,566 Ft. 1,476 R. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125396 Current Operation' Summary of Last Drilled to 8566'. Drilling ahead. 24 Hours' Mud Tvoe - . Dispersed .Mud Weiaht -- 9.7 #/gal .V_iscosity 42 Sec. PV. YF' Fluid Loss Solids 1 2 8 5.0 cc 1 0% Temo 72 OF Survey Deoth 85 8,300 Anale -- 57.70 Direction S25.5W 5,556 N (+)/S (-) E(+)/W(-) SectiQn Coordinate Coordinate 5,611 -5,118 -2,318 D°g Leg °/100, 1.00 Reviewed By: PC BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: .PRUDHOE BAY UNIT As of 0600 Hrs. Thursday, Ma, rch 28. 1991 WELL: P-21 (22-12-10-12) APl No. 50-029-22148 Day: 8 Depth at 0600 Hrs. = 24 Hour Footage = 9,603 Ft. 1,037 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125396 Current Operation' ,,Summary of Last Drilled to 9603'. Drilling ahead. 24 Hours: Mud Tvae Dispersed Mud Weioht 9.8 #/gal Viscosity 43 Sec. PV yp Fluid Loss Solids 12 11 4.6cc 11.5% Temp 68 OF Survey Death Angle 93 9,145 55.60 Direction S23.TW 5,972 N (+)IS (4 E(+)/W(-) Section Coordinate Coordinate 6,242 -.5,694 -2,580 Dog Leg 0/100~ 0.60- Reviewed By: PC BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: As of 0600 Hrs. Monday. April 1. 1991 WELL: P-21 (22-12-10-12) PRUDHOE BAY UNIT AP! No. 50-029-22148 Day: 12 '~' Depth at 0600 Hrs. = 12.594 Ft. 96 Hour Footage = 2,991 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125396 Current Operation: Drilling ahead. Summary of Last 96 Hours: Drilled 12-1/4" hole to 12594'. Mud Tvoe Dispersed Mud Weiaht -- 10.1 #/gal Viscosity 42 Sec. F'V YB Fluid Loss Solids 14 9 3.8 cc 11.5% Temp 94 OF Survey ~ 128 12,481 An(~le -- 59.90 Direction S34.6W TVD 7,834 N (+)/S (-) E(+)RV(-) Section Coordinate Coordinate 9,000 -8,105 -3,921 Dog Leg °/100' 0.70 Reviewed By: ...PC BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: As of 0600 Hrs. Tuesday, April 2. 1991 WELL: P-21 (22-12-10-12) PRUDHOE BAY UNIT APl No. ,50-029-221 48 Day: 13 Depth at 0600 Hrs. = 13.397 Ft. 24 Hour Footage = 803 Ft. Rig: AFE Number: AFE Amount = Current Costs -- Estimated Final Cost = Alaska United Rig #2 125396 Current Operation: Summary of Last Drilled to 13397'. Drilling ahead. 24 Hours: Mud Type Dispersed Mud Weiaht 10 #/gal Viscosity 40 Sec. PV YP Fluid Loss Solid~ Temp 14 9 3.8 cc 12% 101 °F Survey Depth Angle 134 13,041 60.60 Direction S34.9W 8,107 N (+)/S (-) E(+)/W(-) Dog Leg Section Coordinate Coordinate °/100' 9,484 -8,503 -4,206 2.60 Reviewed By: PC, .,' BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE BAY UNIT As of 0600 Hrs. Wednesday, April 3. 1991 WELL: P-2I (22-12-10-12) APl No. 50-029-221 48 .% Day: .1 4, Depth at 0600 Hrs. = 13,709 Ft. 24 Hour Footage = 31 2 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125396 Current Operation: Drilling 12-1/4" hole. Summary of Last 24 Hours: Drilled 12-1/4" hole with surveys to 13709'. Mud Type Mu.d Weight ..Viscosity Dispersed 10.1 #/gal 42 Sec. PV yP Fluid Loss Solids 15 10 4.2 cc 9 Tem.o OF Survey Depth Angle Direction 140 13,612 59.10 S39.5W TVD 8,394 N (+)IS (-) E(+)/VV(-) Section Coordinate Coordinate 9,971 8,899 4,500 Dog Leg o/100' 1.20 Reviewed By' RIS BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: As of 0600 Hrs. Thursday. April 4. 1991 WELL: P-21 (22-12-10-12), PRUDHOE BAY Id, NIT APl No. 50-029-22148 Day: 15 Depth at 0600 Hrs. = 14.002 Ft. 24 Hour Footage = 293 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125~96 Current Operation: P/U Steering Tool Summary_ of Last_ 24 Hours: Drilled 12-1/4" hole with surveys to 14002'. P/U Steering tool assembly. ,Mud Type Mud Weight Dispersed 10.1 #/gal Viscosity 40 Sec. P V. YP Fluid Loss Solids Temp 11 1 1 4.6 cc ? °F Survey Depth Angle Direction. TVD 143 13,892 60.40 S41.3W 8,537 N (+)/S (-) E(+)/W(-) Dog Leg Section Coordinate Coordinate °/100' 10,206 9,083 4,656 1.00 Reviewed By: RIS BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: As of 0600 Hrs. Friday. April 5. 1991 - WELL: P-21 (22-12-10-12) PRI~DHOE BAY UNIT APl No. 50-029-22148 Day: ,16 Depth at 0600 Hrs. = 24 Hour Footage = 14,387 Ft. 38,5 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125396 Current Operation: Drilling 12-1/4" hole. Summary of Last 24 Hours: Drilled 12-1/4" hole with steering tool with surveys. Mud Type Mud Weiaht Viscosity Dispersed 10.1 #/gal 39 Sec. P V YP Fluid Loss Solids 11 10 4.5 cc Temp 100 °F Survey Depth Anale Direction TVD 146 14,168 61.70 S40.2W 8,667 N (+)/S (-) E(+)/W(-) Section Coordinate Coordinate 10,442 9,265 4,817 Dog Leg °/100' 2.00 Reviewed By: RIS BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE BAY UNIT As of 0600 Hrs. Monday. Aoril 8. 1991 _ WELL: P-2! (22-12-10-12~, APl No. ~0-029-22148 Day: 19 Depth at 0600 Hrs. = 14.626 Ft. 72 Hour Footage = 239 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 _125396 Current Operation' P/U BHA Summary_ of Last 72 Hours' Drilled 12-1/4" hole to 14626'. Ran and cemented 9-5/8" casing. Test BOP's. _Mud Type Dispersed Mud Weight 10.0 #/gat Viscosity 38 Sec. p v ,YP Fluid LQ$$ Solids Temp 11 9 4.6 cc ? 102 °F Survey Depth Angle D. irecti(~nTVD 150 14,545 59.20 S42.1W 8,847 N (+)/S (-) E(+)/W(-) Dog..Leg Section Coordinate Coordinate °/100' 10,767 9,522 5,026 3.20 Reviewed By: RIS BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: As of 0600 Hrs. Tuesday. April 9. 1991 WELL: P-21 (22-12-10-12) PRUDHOE BAY UNIT AP! No. 5O-O29-22148 Day' 20 Depth at 0600 Hrs. = 14,030 Ft. 24 Hour Footage = 1 Q Ft. Rig: AFE Number: AFE Amount = Current Costs -- Estimated Final Cost = ..A. laska United Rig #2 125396 Current Operation: Displace to XCD Polymer Mud. Summary of Last 24 Hours:, Drilled out casing. Displaced to XCD Polymer mud. Mud Type Mud Weight Viscosity XCD Polymer 8.6 Cf/gal 37 Sec. P V YP Fluid Los~ Solids Temo 8 10 9.4 cc 200% 100°F Survey Depth Angle Direction 'J'VQ N (+)/S (-) Ef+}/W(-) Section Coordinate Coordinate Dog Leg o/100' Reviewed By: RI, S, BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE BAY UNIT As of 0600 Hrs. Wednesday. Aaril 10. 1991 WELL: P-21 (22-12-10-12), AP! No. 50-029-22148 Day: 21 Depth at 0600 Hrs. = 24 Hour Footage = 14.678 Ft. 42Ft. Rig: AFE Number: AFE Amount = Current Costs -- Estimated Final Cost = Alaska United,Rig #2 125396 Cu. rrent Operation' RIH Summary of Last 24. Hours: Drilled 8-1/2" hole to 14678' (high torque-added lubrabeads). Picked up kelly. Mud Type Mud Weight Viscosity p V Brine XCD Polymer 8.6 g/gal 36 Sec. 6 ,Y,p Fluid Los~ Solids 9 9.0 cc 200% Temp 80 °F Survey Death Angle Directior) .TVI~ N (+)/S (-) E(+)/W(-) Section Coordinate Ooorqlinate ,.,Dog Leg o/100' Reviewed By: RIS BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: ,pRIdDHOE BAY UNIT As of 0600 Hrs. Thursday, April 11. 1991 WELL: P-21 (22-12-10~:12) APl No. 50-029-221 48 Day: .2.2 Depth at 0600 Hrs. = 15.173 Ft. 24 Hour Footage = 495 Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost -- Alaska United Rig #2 125396 Current Qperation' MWD Logging. Summary of Last 24 Hours: Drilled 8-1/2" hole to 15173' MWD logging repeat pass. Mud Type Brine XCD Polymer Mud Weight 8.7 #/gal Viscosity 37 Sec. p v YP, Fluid Loss Solids 6 10 7.6 cc 250% Temp 90 °F Survey Depth Angle Direction TV[;) N (+)/S (-) E(+)/W(,) Section Ooordinate Ooordinate Dog Leg o/100' Reviewed By' RIS BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: As of 0600 Hrs. Friday. April 12. 1991 WELL: P-21 (22-12-10-12) PRUDHOE BAY UNIT APl No. 50-029-22148 Day: 23 Depth at 0600 Hrs. = 15,173 Ft. 24 Hour Footage = Ft. Rig' AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 1,25396 Current Operation' RIH Summary of Last 24 Hours: Ran MAD logs. Ran Gyro survey. RIH with plug back assembly. Mud Type Brine XCD Polymer ,, ,,,,, Mud Weight 8.7 #/gal Viscosity 36 Sec. P V YP Fluid Loss Solids Temp 6 8 7.4 cc 200% 88 °F Survey Depth Angle Direction TVD N (+)/S (-) E(+)/VV(-) Dog Leg Sectioq Coordinate Coordinate °/100' Reviewed By: .,FILS BP EXPLORATION (ALASKA), INC. DAILY DRILLING REPORT: PRUDHOE BAY UNIT As of 0600 Hrs. Monday. April 15. 1991 WELL: P-21 (22-12-10-12) APl No. 50-029-22148 Day' 26. Depth at 0600 Hrs. = 72 Hour Footage = Ft. Ft. Rig: AFE Number: AFE Amount = Current Costs = Estimated Final Cost = Alaska United Rig #2 125396 Current Operation: Rig Released at 2100 hrs 4/14/91 Summary. of Last 72 HOurs: Plugged back open hole from 15173' to 14096' (three plugs). Tested plug to 3000 psi for 15 mins. Displaced top 2000' to diesel. Landed hanger with one joint of tubing. Installed adapter flange with Otis cap. Freeze protected well. Mud Tv.De Mud Weight Viscosity p V #/gal Sec. yP. Fluid Loss Solids Temp CC °F Survey Depth Angle Direction 'TVD N (+)/S (-) E(+)/W(-), .Dog Leg Section Coordinate Coordinate °/100' Reviewed By: RIS BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 May 15, 1991 Alaska Oil & Gas Conservation Commission 3001 Porcupine Dr. Anchorage, Alaska 99501 Dear Sirs, Re: Prudhoe Bay Unit Well P-21 (22-12-10-12) BP Exploration (Alaska) submits Form 10-403, Appfication for Sundry Approvals, for Well P-21 (22-12-10-12) and respectfully requests approval for shut down of well operations for further reservoir evaluation. Enclosed is a copy of the shutdown procedures. Well operations should resume by approximately year end 1991. If there are any questions, do not hesitate to call Paul Chan at 564-4226. Yours very truly, Bill Kirton Drilling Engineering Supervisor RECEIVED MAY ?- 1 t991 Alaska Oil & Gas Cons. 6ommiss~o~ Anchorage , , STATE OF ALASKA AL ' OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon __ Suspend __ Operation Shutdown X Re-enter suspended well __ Alter casing __ Repair well __ Plugging __ Time extension __ Stimulate __ Change approved program __ Pull tubing __ Variance__ Perforate__ Other __ 2. Name of Operator 5. Type of Well: 6. BP Exploration Development x Exploratory __ 3. Address Stratigraphic__ 7, P. O. Box 196612, Anchorage, Alaska 99519-6612 Service 4. Location of well at surface 8. 3019'SNL, 2987' WEL, SEC. 31, T11N, R13E At top of productive interval 9. Datum elevation (DF or KB) KBE=92.4' feet Unit or Property name Prudhoe Bay Unit Well number P-21 (22-12-10-12) Permit number 91-40 10. APl number 50- 029-22148 11. Field/Pool N/A At effective depth N/A At total depth 2319' SNL, 3505'WEL, SEC. 12, TION, R12E Prudhoe Bay Field/Oil Pool 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical casing Length Structural Conductor 80' Surface 2967' Intermediate 14590' ,Production Liner Perforation depth: measured none 15173' feet Plugs (measured) 9172' feet BKB n/a feet Junk (measured) feet Size Cemented 20' 13-3/8" 4292 cuft Permafrost 9-5/8" 3315 cu ft C/ass G true vertical none Tubing (size, grade, and measured depth) none Packers and SSSV (type and measured depth) none 15173'-14773' (134 sx);14773'-14373' (134 Sx) & 14496'- 14096 (134 sx) Measured depth True vertical depth bkb 131' 131' 2997' 2670' 14620' 8892' RECEIVED MAY 1 199I) Alaska 0il & Gas Cons. Commission Anchorage 13. Attachments Description summary of proposal __ Detailed operations program x BOP sketch 14. EStimated date for commencing operation April14, 1991 16. If proposal was verbally approved Oil X Name of approver M. Minder 4-11-91 Date approved Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed 15. Status of well classification as: Gas Suspended Title Drilling Engineering Supervisor FOR COMMISSION USE ONLY Date Conditions of approval: Notify Commission so representative may witness Plug integrity__ BOP Test Location clearance ~ Mechanical Integrity Test~ Subsequent form required 10- ff'~'7 JApproval No7/.../,,,~-~ ~ Approved by order of the Commission Form 10-403 Rev 06/15/88 ORIGINAL SIGNED BY LONNIE C. SMITH Commissioner ApgroveCt Cog¥ eturned / SUBMIT IN TRIPLICATE BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 Thursday, April 11, 1991 Mike Minder Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska, 99501 Dear Mr Minder, Below for your approval is our proposed plan for "Shutdown of well operations" for well P-21' Well P-21 (22-12-10-12) casing details: 20" conductor @ 110' 13-3/8" 68# NT80 Buttress Casing @ 2997' 9-5/8" 47# NT80S NSCC Casing @ 14,620' 8-1/2" open hole to 15,173' Mud in hole: 8.7 ppg Brine XCD Polymer. Shutdown Procedure: RECEIVED MAY ~ 1 '199~ Aiaska Oil & Gas Cons. Commission Anchorage 1. Set a continuous cement plug from 8-1/2" hole TD (15,173') to 200' above the 9-5/8" shoe (14,620'), (top of cement plug at 14,420'). 2. WOC and pressure test cement plug and 9-5/8" casing to 3,000 psi for 15 minutes. 3. DisPlace the top 2000' of the well to diesel (150 bbls). 4. Land tubing hanger with one joint of 4-1/2" 12.6# L-80 tubing in tubing spool. Install 4-1/2" two way check valve. Nipple down BOP. , Install a 13-5/8" by 4-1/16" adapter flange and a 4-1/16" - 5,000 psi valve with an Otis Tree cap assembly. Pressure test to 5,000 psi. Remove two way check valve, 6. Install a 4-1/2" back pressure valve in the tubing hanger, ensuring that the valve and well head are freeze protected with diesel. BP Exploration (Alaska) Inc. . Down squeeze the 13-3/8" by 9-5/8" casing annulus with dry crude (200 bbls) to freeze protect annulus. 8. Release Rig. The Application for Sundry Approvals (form 10-403), along with the other paper work required by the AOGCC will be submitted as soon as possible. Yours sincerely, / .. Richard H. Reiley Drilling Manager E DRtLLtNG pROG~RAM 20" conductor One joint ot 4-1/2" Tubing 110' 13-3/8" 689 NT-80 Buttress 4292 cu. it. permairost 9-5/8" 47# NT-80S NsCC 2997' R CEIVED MAY 2 1 t99'~ Alaska Oil & Gas Cons. Commission Anchorage Top ot cement plugs 9-5/8" CASING: 3315 cu.tt. CraSS G 8-1/2" Hole TO 14096' 14620' 15173' Memorandum To: Rig Rep AUDI Rig 2 Date: Thu, Apr 11, 1991 From: Larry Driskill RE(EIVED MAY 2 I t99'~ Subject' P-21 SusuPension PrQcedure Alaska0il & GasCons. Commissio~' Anchorage 1. RIH with 15 joints of 3.5" 13.3# DP, a plug catcher, and cross over to 5-1/2" DP. , Batch mix 158 cuft (134 sacks) of liner cement slurry (formulation as per the liner cementing program). Pump 10 bbls water followed by the cement to set a 400' balanced cement plug from TD to 14,773'. Displace with 1.3 bbls water followed by mud. Do not drop the DP plug for the first cement plug. 3. POOH slowly to 14,773', and circulate bottoms up. . Batch mix a second 158 cuff (134 sacks) of liner cement slurry (same formulation). Pump 10 bbls of water followed by the cement to set a second 400' balanced cement plug from 14,773' to 14,373'. Drop drill pipe plug and displace with 1.3 bbls of water followed by mud. 5. Displace DP Plug to plug catcher and shear plug. 6. POOH slowly to 10 stands above top of plug. Circulate bottoms up. POOH to 2000'. 7. WOC and pressure test cement plug and 9-5/8" casing to 3,000 psi for 15 minutes. 8. Displace the top 2000' of the well to diesel (150 bbls). 9. Land tubing hanger with one joint of 4-1/2" 12.6# L-80 tubing in tubing spool. Install 4-1/2" two way check valve. Nipple down BOP. 10. Install a 13-5/8" by 4-1/16" adapter flange and a 4-1/16" - 5,000 psi valve with an Otis Tree cap assembly. Pressure test to 5,000 psi. Remove two way check valve. 11. Install a 4-1/2" back pressure valve in the tubing hanger, ensuring that the valve and well head are freeze protected with diesel. 12. Down squeeze the 13-3/8" by 9-5/8" casing annulus with dry crude (200 bbls) to freeze protect annulus. 13. Release Rig. RECEIVED MAY 2 ] '199~ ^laska 0ii & Gas Cons, uumm~ssio~ Anchorage BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO: ARCO ~._ ~. ..., ~ Date:05~09~91 CHEVRON ~ ~ .~ .,,~t T#:82441 EXXON MOBIL PHILLIPS STATE OF ALASKA TEXACO GEOSCIENCE ARCHIVES BP OPEN HOLE FINAL Enclosed is your copy of the material listed below. If you have any questions, please contact BP Well Records at (907) 564-4~.45. P-21 MWD DGR/CNP/SFD/CAL 04/10/91 #1&2 14625-15173 SPERRY 2"/5" P-21 MWD DGR/EWR/FXE/CNP 04/10/91 #1&2 8731-9098 SPERRY 2"/5" P-21 MWD DGR/EWR/FXE 04/10/91 #1&2 14625-15173 SPERRY 2"/5" *** GEOS/ARCO/EXXON/ARCHIVES ONLY. STATE ONLY: Magnetic Single Shot Directional Survey Date: Gyroscopic Directional Date: Job#: Job#: Inforation Control Well Records LR 2-1 J..Dietz/S. McCurry BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO: ARCO DATE:05/09/91 EXXON T#: 82446 PHILLIPS STATE OF ALASKA ARCHIVES SYSTEM Tape & Transmittal Only BP MAGNETIC LIS TAPE & LISTING Enclosed is your copy of the material listed below. If you have any questions, please contact BP Well Records at (907) 564-4445. MWD EWR/CNPMPT 04/01/91 SPERRY#AKMM910411 1600BP! #1 &2 14625-15173 TAPE POS.#07738 AP1#50-029-22148 Information Control Well Records LR 2-1 J. Dietz/S. McCurry TO: THRU: MEMORANUUM State of Alaska ALASKA OIL AND GAS CONSERVATION COMMISSION . Lonnie C. Smi DATE: May 16, 1991 Commissioner / ~ t' FILE NO: BPX-P21 TELEPHONE NO: SUBJECT: Cement Plugs BPX P-21 Well Permit No. 91-40 Prudhoe Oil Pool FROM: Doug Amos ~ Petroleum Inspector Friday APril 12,1991L I traveled this date from BPX Malguk Well No. 1 to BPX P-21 well to stand by for the pressure test on the open hole and 9 5/8" csg plug. After waiting on cement for 8 hrs., we attempted an integrity test of 3,000 psi on the 15.8 ppg cmt. plug set from 15,173', the hole TD, to 14,373', which would be 347' inside the 9 5/8" csg.. The plug failed this test and Larry Myres BPX rep. requested that we wait another 5 hours and retest at that time. This subsequent test failed as well. S_-aturda¥..ADril._.!3.199!.:. I traveled this date for AAI's West Beach State No.1 well back to BPX P-21 well to witness the pressure test on the second cmt. plug. Before placing the second plug, hard cmt. was tagged at 14,496' the second plug was placed from this depth to 14,096'. The calculated plug length inside the 9 5/8' csg is 524'. Having WOC for 12 · hours the plug was successfully test with 3,000 psi for 15 minutes. Two copies of the BPX Plug Job Cement Summary are attached, one for each plug pumped. In summary I witnessed two cmt plug pressure test at BPX P- 21 well. The first cmt. plug set failed the pressure test. The subsequent cmt. plug set, from 14,496' to 14,096' was successfully tested with 3,000 psi for 15 minutes. Attachment. 02-00lA (Rev. 6/89) 20/ll/MEMO1.PM3 CEMENTING SUMbtARY PLUG JOB PURPOSE OF PLUG .... P'~ ~ ,,@ II ) EXCESS, TOTAL CEbiENT USED WAS , I ~F CU.FT. ( /,3 ~ WITIt OPEN END DRILI, ritE A'r~ /~Z, ~f~., ', C~CUI:5~ ~ O rI:MPED /~ ~BBLS. OF ~ , ~ : /_/ 2~ /q. oy~.. '( ~oo ,). 12'-/ sx.> + . ~ ' ~1/4 z SX.). PRE-WAStl AHEAD. MIXED AND PLrbtPED DISPLACED CEblENT WITH PPG 2 3C HRS. TIIICK TIHE. BBLS. OF_..,~7.~G;. d STARTED MIXING CEMENT AT /~ d~ O }IRS. AT A RATE OF ..... ~ or ~ DRILLPIPE WAS WET0 BPH AND ~ ~ dP0 BPM AND .... //~ 0 AFTF. R DISP],ACINO. PULLED PSI. PSI. DISPLACED AT A RATE- c.I.t. AT / 26'0 ~]~s. STAXDS OF PIPE, AND WAS OUT OF. CALCULATED CEMENT TOP AT .l '7 ~ O .,.. ....... ~fi tlRS.. ,. -,~ CO~,~IENTS: HRS. PULLED DRII.LPIPE TO .? . WAIT ON CEHENT CEMENTING SUMbIARY PLUG JOB RIG ~k/d.) _ Z ...... _ ...... , LAST CASING __] ~, ~ Z ~ ', DRILLED DEPT]t ~,:~_~ ..... ', HOLE SIZE ,,@ II ) Plug q aao^ ...... REQUIRED PLUG LENGTH: FROM. 'l ~ /'] ~ _ ' UP TO ,_/,~, 3 73 .... ' ( CALCULATED CEMENT VOLUME: ~] & ...... CU,FT. i ...... 2~,~ . .. sx.) + EXCESS, TOTAL CEbIENT USED WAS SX.). ,). I'7ITH OPEN END DRILL PIPE AT. /~'/'7.~ ,,_ 1: I:MPED ..... _,/~. BBLS. OF /..]{EAD. bi{XED AND PUMPED Z ~)~'~ C. f a '3.,. ,15 % /7 DISPLACED CEMENT WITH ' CIRCULATED , PRE-WAS}I g/(~ CU.FT. (_._ 2d,~ SX.) OF "'-. CEMENT, WITH · ., ADDITIVES. BBLS. OF ItRS. TIIICK TI.ME. STARTED MIXING CEblENT AT A~.: A RATE OF _ ~ BPM AND ....... ~;~ (~ . PSI. DISPLACED AT A RATE C':F ~ BI'bi AND .... //E2 _(~ PSI. DRILLPIPE WAS WET~ AFTER DISPI,ACING. PULLED .... ~ AND WAS OUT OF. CALCULATED CEMENT TOP AT ._l~,.~.7. 3 HRS. C.I.P. AT 153~ .... SZ^.¥DS OF P PULLED DRII,LPIPE TO · WAlT ON CEbIENT ~ ~4£ S ,Rs.. BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 Thursday, April 11, 1991 Mike Minder Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska, 99501 Dear Mr Minder, Below for your approval is our proposed plan for "Shutdown of well operations" for well P-21' Well P-21 (22-12-10-12) casing details' 20" conductor @ 110' 13-3/8" 68# NT80 Buttress Casing @ 2997' 9-5/8" 47# NT80S NSCC Casing @ 14,620' 8-1/2" open hole to 15,173' Mud in hole: 8.7 ppg Brine XCD Polymer. Shutdown Procedure' . . Set a continuous cement plug from 8-1/2" hole TD (15,173') to 200' above the 9-5/8" shoe (14,620'), (top of cement plug at 14,420'). WOC and pressure test cement plug and 9-5/8" casing to 3,000 psi for 15 minutes. 3. Displace the top 2000' of the well to diesel (150 bbls). 4. Land tubing hanger with one joint of 4-1/2" 12.6# L-80 tubing in tubing spool. Install 4-1/2" two way check valve. Nipple down BOP. o Install a 13-5/8" by 4-1/16" adapter flange and a 4-1/16"- 5,000 psi valve with an Otis Tree cap assembly. Pressure test to 5,000 psi. Remove two way check valve. 6. In~tall a 4-1/2" back pressure valve in the tubing hanger, ensuring that the valve and well head are freeze protected with diesel. BP Exploration (Alaska) Inc. , Down squeeze the 13-3/8" by 9-5/8" casing annulus with dry crude (200 bbls) to freeze protect annulus. 8. Release Rig. The Application for Sundry Approvals (form 10-403), along with the other paper work required by the AOGCC will be submitted as soon as possible. Yours sincerely, Richard H. Reiley Drilling Manager ALASKA OIL AND GAS CONSERVATION COMMISSION · March 19, 1991 WALTER J. HICKEL, GOVERNOR 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 TELECOPY: (907) 276-7542 Bill Kirton PBU Lead Engineer BP Exploration (Alaska) Inc. P. O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Unit P-21 BP Exploration (Alaska) Inc. Permit No. 91-40 Sur.' Loc..3019'SNL, 2987'WEL, Sec. 31, TllN, R13E Btmhole Loc. 2472'SNL, 3183'WEL, Sec. 12, T10N, R12E Dear Mr. Kirton: Enclosed is the approved application for permit to drill the above referenced well. The permit to drill 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. The Commission will advise you of those BOPE tests that it wishes to witness. Sin?erely, ~ <'~Lonnie ~. ~ith, Commissioner Alaska Oil and Gas Conservation Commission dlf/enclosures cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. ALASKA OIL AND GAS CONSERVATION COMMISSION WALTER J. HICKEL, GOVERNOR 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 TELECOPY: (907) 276-7542 March 15, 1991 William Kirton PBU Drilling Engineering Supervisor BP Exploration (Alaska) Inc. P. O. Box 196612 Anchorage, AK 99§19-6612 Dear Mr. Kirton: We have received your letter of March 14, 1991 requesting a waiver to Rule 4(b) of Conservation Order No. 145 for the drilling of future wells on P-pad.· You noted that well P-13 and several subsequent wells drilled from P-pad encountered no gas or abnorma! pressures while drilling surface hole. The Commission has examined the evidence available and hereby waives the requirements of Rule 4(b) of Conservation Order No. 145 for the drilling of future wells from P-pad in the Prudhoe Bay Field. Sincerely, Lonnie t2. Smith Commissioner dIf: MTM BP EXPLORATION March 14, 1991 David W. Johnston Chairman of Commission AOGCC 3001 Porcupine Drive Anchorage, AK 99501 BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 COMM i _ RES. SR ENG r SR EN'G ~ Assr ENG..~..~'[ _L. GEOL ~,~'[rI' STAT '~'E'C~'I~ i"' · - ~ FILE Dear Mr. Johnston, Reference' Rule 20 AAC 25.035 P-13 was the first well drilled at P-pad. A 20" diverter system was used while drilling surface hole. P-13 and subsequent wells drilled at P-pad encountered no gas or abnormal pressures while drilling surface hole. Drilling experience on P-pad indicates that a diverter system in not necessary in drilling surface hole. Therefore, BP Exploration (Alaska) Inc. respectfully requests a waiver to Rule 20 AAC 25.035 requiring a diverter system. Sincerely, Bill Kirton Drilling Engineering Supervisor cc: Paul Chan ~ File 16.2 P-21 Well file MAR 1/, 1991 Alaska Oil ,~ Gas.._C.0n. s, G~mmlS~lIgl ~"'"~"'. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 AAC 25.0O5 la. Type of work Drill [] Redrilll-Illb. Type of well. Exploratory[] Stratigraphic Test [] Development Oil [] Re-Entry [] DeepenI-II Service [] Development Gas [] Single Zone [] Multiple Zone [] 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Ex~loratiorl KBE = 92'f e e t Prudhoe Bay Field/Prudhoe 3. Address 6. Property Designation Bay Pool P. O. Box 196612. Anchoraoe. Alaska 99519-6612 ADL 2~265 4. Location of well at surf-aCe 7. Unit or property Name 11. Type Bond(see 20 AAc 25.025) 3019' SNL, 2987' WEL, SEC. 31, T11N, R13E Prudhoe Bay Unit At top of productive interval 8~. Well number Number 2276'SNL, 3082' WEL, SEC. 12, TION, R12E P-21 (22-12-10-12) 2S100302630-277 At total depth 9. Approximate spud date Amount 2472' SNL, 3183' WEL, SEC. 12, TION, R12E March 19, 1991 $200,000.00 12. Distance to nearest 13. Distance to nearest well 4. Number of acres in property15. Proposed depth(uDandmVD) property line ADL 28289 @ 3183' feet P-20 @ surface/34' feet 2560 15129'MD/9161 'TVDfeet 16. To be completed for deviated wells 17. Anticipated pressure (see 20 AAC 25.035 (e)(2)) Kickoff depth 5oofeet Maximum hole angle 5~'.9 0 Maximum surface 3330 pslg At total depth (TVD) 8800,/43~)0 psl~l 18. Casing program Setting Depth s~ze Specifications Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD M D TVD (include stage data) 20" Cond. 80' Surface 110' 110' 17- ~ /2" 13-3/8" 68# l~~.~o¢~,,t Butt 2958' Surface 2988' 2687' 4165 cu fl Permafrost 12-1/4" 9-5/8" 47# NT80-$ NSCC 14540' Surface 14570' 8865' 3312 cu ft Class G 8-1/2" 7" 26# NT80 NSCC 809' 14320' 8735' 15129' 9161' !256 cu ft Class G 19. To be completed for Redrill, Re-entry, and Deepen Operations. Present well condition summary Total depth: measured feet Plugs (measured) true vertical feet Effective depth: measured feet Junk (measured) true vertical feet Casing Length Size Cemented ,.,.M~Las~lr~iLclld{91~tlil. I-~ True Vertical depth Structural KI:L iV U Conductor Surface · Intermediate ~V~f~ 1 2 ]99[ Production ~ Liner true vertical 20. Attachments Filing fee [] Property plat [] BOP Sketch [] Diverter Sketch [] Drilling program[] Drilling fluid program [] Time vs depth pict [] Refraction analysis [] Seabed report[] 20 AAC 25.050 requirements[] 21. I hereby certify ~that the foregoing is true and correct to the best of my knowledge S,~lned ~-- ~ ~ Title PBU Lead EnEinoor ~///..J.//~y / Date Commission Use Only Permit Number IAPI number IApproval date ISee cover letter ~/- ~<Q 150-(TZ.q.- ~_~---/~ I 03/19/91 Jfor other requirements Conditions of approval Samples required [] Yes .J~No Mud Icg required []Yes ~No Hydrogen sulfide measures [] Yes ~ No Directional survey requ~recl ~ Yes [] No Required working pres~!3re for BOPE ('[~M; 1-13M; J~5M; I-I10M; I-I15M; Other: ~~ ~~~ by order of Approved by . Commissioner ~ne commission Date~~/~ ~q ! Form 10-401 R~. 12-1-85 Submit in triplicate AFE No. 125396 PROPOSED DRILLING AND COMPLETION PROGRAM WELL P-21 [22-12-10-12] PBI,I Install and cement 80' of 20" conductor to surface. The drilling fluid program will consist of an 8.5-9.5 ppg spud mud in the 17-1/2" hole, a 9.0 - 9.7 ppg water base mud in the 12-1/4" hole and a 9.0 ppg water base mud in the 8-1/2" hole. Drill 17-1/2" hole to 3008' MD and cement 13-3/8" 68# NT80CYHE buttress casing to surface. Install blowout prevention equipment consisting of 5000 psi W.P. pipe rams, blind rams, and annular preventer. Maximum possible bottomhole pressure is 4390 psi at 8800' TVDss based on original reservoir pressure. Maximum possible surface pressure is 3330 psi based on a gas column to surface from 8600' TVDss and an oil column to 8800' TVDss. Directionally drill 12-1/4" hole to the 9-5/8" casing point above the Shublik formation. Run 9-5/8" 47# NT-80S NSCC casing to within 10' of 12-1/4" TD and cement with Class G cement around the 9-5/8" shoe. The annulus will be freeze protected by dry crude. Formation leak-off tests will be performed 10' below 13-3/8" casing shoe as per AAC 25.030. ~ &~,f~ ~¢-/~,~ r¢/,~,~ Directionally drill 8-1/2" hole to TD. Run 7" liner from TD to 250' inside 9-5/8" casing shoe and cement using Class G cement. Clean out to 7" float equipment. Change over to NaCl completion fluid. Test casing and lap to 3000 psi. Run 9-5/8" production packer on tubing. Set packer 50' above top of liner. A subsurface safety valve with dual control lines will be placed 100' below base of permafrost. Install and test tree. Displace tubing to diesel. Set and test packer. Fluids incidental to the drilling of a well will be pumped down the 9-5/8" x 13- 3/8" annulus of the well. Tubing Size: 4-1/2", 12.6# L-80, TDS R-3 TBG with 6 GLM's. Tailpipe Size: PC: 2/26/91 4-1/2" TAILPIPE ., ,~ELIMINARY WELL PLaN WELL P-21 [22-12-10-12] PBU 20" Conductor PROPOSED DEPTH BKB 110' Ball Valve 13-3/8" Casing Shoe 17-1/2" Open Hole 2322' 2988 3008' Cement Top 3987' 4-1/2" 12.6# L-80 TDS Tubing with 6 GLM's 9-5/8" Packer 14270' 7" Tieback Assembly 14320' 9-5/8" Shoe 12-1/4" Open Hole 14570' 14580' 7" 26# 13 Cr NSCC Liner 7" PBTD 7" Liner Shoe 8-1/2" Open Hole 15049' 15129' 15129' PRELIMINARY WELL PLAN Well: P-21 [22-12-10-12] PBU AFE NUMBER: 125396 LOCATION: Surface: Target: T.D.: 3019' SNL, 2987' WEL, Sec. 31, T11N, R13E 2276' SNL, 3082' WEL, Sec. 12, T10N, R12E 2472' SNL, 3183' WEL, Sec. 12, T10N, R12E ESTIMATED START: March, 1991 OPR. DAYS TO COMPLETE: 34 CONTRACTOR: Alaska United #2 MAX ANGLE/SECT COURSE/KOP/BUILD RATE: 57.9°/S 27.44° W/500/2.0 Item TVDss. MD(BKB) Mud Wt. 20" CONDUCTOR 13-3/8" SHOE BASE WEST SAK FORMATION IKRU-PBU TOP SAG RIVER SANDSTONE 9-5/8" SHOE TOP SADLEROCHIT TARGET TOTAL DEPTH 110 8.5 2595 2988 9.5 5620 8636 9.0 7295 11788 10.0 8761 14547 10.0 8773 14570 10.0 8871 14754 8.7 8931 14868 8.7 9069 15129 8.7 LOGGING PROGRAM: Open Hole - Record all logs on magnetic tape where applicable. 12-1/4" Hole: 8-1/2" Hole: Cased Hole CBT/CET and Gyro. NONE MWD logging with option to wireline log GR/SP/DIL/BHCS/CNL, GR/CNL/LDT, RFT Perforate after rig release. PC: 2/26/91 3' .5/8", 5000 PSI WP TRIPLE RAM STACK DRILLING ,,, , RISER ANNULAR PREVENTER PIPE RAMS BLIND RAMS 2" KILL LINE DRILLING SPOOL 4" CHOKE LINE HYDRAULIC MANUAL GATE GATE "1 PIPE RAMS ~4SDUA247 [DRANO35]P21_CLOSAP_SHORT7. LtS~ 4 18-FEB-1991 !~:39 --- Closest Approach Analgsis --- Date' 18-FEB-9I Time~ 16:38'58 Search Rmdius= 200 7 DEQR~E LEAD LINE '--For--proposed---well:' P-21 - -[22-12-I0-i2] Location = W-E S-N TVD(SBS) ~--Top-- '63t'307';00 5946989,00 ............ .~.'00 ............................................................. Bottom 6~7545. 15 5~3635~.31 ~06~.00 Note~ .......... All--deptbsin ~eet Below ½ellgBushing WELL IDENT A029-1000200 P-51 'i~---AOa~--1000202 ' AOP.~- 100020~ --P--62 A02~- 1000205 P-63 ............ Closest App;'oach ................................................................ Vertical-----Intersec-ti-on ..................... /PROPOSED\ / NEARBY~, CLOSEST /PROPOSED\ / NEARBY\ VE,~T I TVD DEPART TVD DEPART D I STANCE TVD DEP ART TVD DEP ART D NO COORDINATE POINT5 WITHIN SPECIFIED SEARCH WINDOW NO COORDINATE POINTS WITHIN SPECIFIED SEARCH WINDOW .NO-COORDINATE---POINTS-WITHIN-SPECI~IED--SEARCH-WINDOW NO COORDINATE POINTS WITHIN SPECIFIED SEARCH WINDOW 27 x' P-20 ( A029-220~400 A02~-220~700 P-18il 0.0 0.0 0.0 0.0 34.1 500.0 .............. 0:0 .............. 500.0 .............. 1:5 ................ 68:2 0.2 0.0 0.0 O. 0 104.6 SUMMARY The well which comes closest to the proposed well is' A02c~-2208~00 P-20 ( Closest appeoach distance = 34. 1 ~eet ~:--~-t-OK--OFF--~o~-th i-s-~un - ---500:O--~eet .~4~-~DUA247: [DRANO35]P2i_CLOSAP_SHORT. LISi~ iS-FEB-I~F~i 1&:35 Page -- Closest Approach Anaigsis --- Date. 1B-FEB-=,i Time: 16' 35:23 ~earch Radius= 200 COURSE LINE ---For proposed well' P-21 [22-12-10-12] Location = W-E S-N TVD(SBS) ..... Fop ............. 631307.00 5946989.00 -92.00 Bottom 626276.90 5936890.05 9069.00 Note: .... All.depths in ~eet Below Kellg Bushing (BKB> --- ................................................... Closest Approach .............. Vertical-.intersection WELL IDENT /PROPOSED\ /NEARBY\ CLOSEST /PROPOSED\ /NEARBY\ TVD DEPART TVD DEPART DISTANCE TVD DEPART TVD DEPART VEET I CAL D ! STANC = A029-1000200 P-51 NO COORDINATE POINTS WITHIN SPECIFIED SEARCH WINDOW ..... A029-100020~ P-56 NO COORDINATE POINTS WITHIN SPECIFIED SEARCH WINDOW --NO-COORDINATE POINTS WITHIN-SPECIFIED SEARCH-WINDOW ...................................................................... NO COORDINATE POINTS WITHIN SPECIFIED SEARCH WINDOW 0.0 0.0 0.0 0.0 34. 1 500.0 ................. 0.0 500.0 ............. !: 5 ................ 68.~2 0.2 0.0 0.0 0.0 104.6 SUMMARY The well which comes closest to the proposed well is' A029-2208~00 P-20 ( Closest approach distance = 34. I Feet ----KICK--OFF--~o~--th is-~un ................... 500. 0 Feet -- 5280' 26 12 N PAD 17 10 15 T11N T11N TION No. P-21 LAT. = 70°15'47.767' LONG. = 14~° 56'18.308' ,, ,, Y - 5,946,988,59 A.S.P. X = 631,306.50 ZONE 2,260' FROM SOUTH UNE 2,019' FROM WEST UNE SURVEYOR'S CER,nFICATE I hereby certify that I am prepedy registered and licensed to practice land surveying in the State of Alaska, and that this plat represents a survey made by me or under my supervision, and that all dimensions and other details are correct. D~1991 LS No. _7335 -/ Registered 2 3 PNN~-21 WELL No. P-21 ASBUILT LOCATED IN PROTRACTED SECTION 31, TOWNSHIP 11 NORTH, RANGE 15 EAST, UMIAT MEREDIAN, ALASKA FOR= P.O. BOX 196612 ANCHORAGE, ALASKA 99519-6612 301 DANNER STREET SUITE 200 ANCHORAGE, ALASKA 99518 *~' KMC Jl~l~ 3/10/91 3O 31 W 31 2,019' b T11N T1 ON NO SCALE 3O 31 31 6 P AOP- 21X WELL PAD "P" WELL No. P-21 ASBUILT LOCATED IN PROTRACTED SECTION ,.31, TOWNSHIP 11 NORTH, RANGE 13 EAST, UMIAT MEREDIAN, ALASKA SURVEYED FOR: B.P. EXPLORATION P.O. BOX 196612 ANCHORAGE, ALASKA 99519-6612 SURVEYED BY: ARCTIC SLOPE CONSULTING GROUP ,.301 BANNER STREET SUITE 200 ANCHORAGE, ALASKA 99518 DRAWN BY: KMC ID^TE: .3/10//91 WELL P-21 [22-1 2-1 0-1 2] Cement Calculations 13-3/8" CASING Measured Depth: Basis: Total Cement Vol: 9-5/8"CASING Measured Depth: Basis: Total Cement Vol: Lead Slurry Vol: Tail Slurry Vol: 7" LINER Measured Depth: Basis: Total Cement Vol: 2988' 2 X Annular volume 4165 (cu ft) 14570' 90% Annular Volume to 13-3/8" + 50 cuft 3312 (cu ft) 3022 (cuft) 290 (cuft) 1 5129' (Shoe) 1.5 X Annular volume to 9-5/8" shoe + 150 cuft 256 (cu fi) PC: 2/26/91 r4~O f)d~'$ ro rluO tlg~tr ~ D $O~L TA. IJ t J 50 ' t 0£~1CO · 10 \ / Th(J( 1 - Brandt Dual Tand~n Sidle Shaker 1 - Demoo 6-12" Cone Shale Desander 1- De, nco 4161! w/16 cones & {1) ~ 4Bil w/16 cones (Desilter) 1 - Drilco ~hrospheric Hud Degasser 1- 200 gpm Operating Capacity. Centrifuge 15 - Brandt MA5 Hud li{x Agitators 1- 150 bbl. Trip T .aok 1 - Recording drilling fluid pit level indicator with bot]~ visual and audio warning devices at driller's console - ~.: 1 - Drflling fluid flcx.] sen~or with readout at drlll~..s console ~m ~ov~ ~A~m ~ES NO (1)~ Fee 7~_~ ~/ 1. Is the permit fee attached .......................................... (2 thru 8) (8) (3) Admin ~/d ~/0_~/~_/' 9. ~'(9 thru 13) 10. z~,.~.~. 7-~¢- ~f 11. (10 and 13) 12. 13. (4) Casg (14 thru 22) (23 thru 28) 2. Is well to be located in a defined pool ............................. ~ 3. Is well located proper distance from property line .................. 4. Is well located proper distance from other wells .................... 5. Is sufficient undedicated acreage available in this pool ............ ~._ 6. Is well to be deviated and is wellbore plat included ................ 7. Is operator the only affected party ................................. 8. Can permit be approved before fifteen-day wait ...................... Does operator have a bond in force .................................. Is a conservation order needed ...................................... Is administrative approval needed ................................... Is the lease number appropriate ..................................... ~- ... Does the well have a unique name and number ......................... 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. Is conductor string provided ........................................ Will surface casing protect all zones reasonably expected to serve as an underground source of drinking water ..................... Is enough cement used to circulate on conductor and surface ......... Will cement tie in surface and intermediate or production strings ... Will cement cover all known productive horizons ..................... Will all casing give adequate safety in collapse, tension and burst.. Is this well to be kicked off from an existing wellbore ............. Is old wellbore abandonment procedure included on 10-403 ............ Is adequate wellbore separation proposed ............................ Is a diverter system required ....................................... Is the drilling fluid program schematic and list of equipment adequate~ Are necessary diagrams and descriptions of diverter and BOPE attached. Does BOPE have sufficient pressure rating - Test to ~~ psig .. Does the choke manifold comply w/API RP-53 (May 84) .................. Is the presence of H2S gas probable ................................. (29- thru 31) (6) Add: '1~/.',~' ' ' Geology: Engineering: DWJ~ -LCS rev: 6.011 11/30/90 For 29. 30. 31. 32. exploratory and Stratigraphic wells: Are data presented on potential overpressure zones? ................. Are seismic analysis data presented on shallow gas zones ............ If an offshore loc., are survey results of seabed conditions presented Additional requirements ............................................. INIT IAL GEO. UNIT ON / OFF POOL CLASS STATUS AREA NO. SHORE eo /so zS~z.,, /-o.,'/ 77~ //~so o,,~ ,, Additional Remarks: O ~Z Well History File APPENDIX Information of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history, file. To improve the readability of the Well History file and to simplify finding information, information of this nature is accumulated at the end of the file under APPENDIX. No special effort has been made to chronologically organize this category of information. (NOTE: **** LIS READ **** MAXIMUM RECORD LENGTH - 8192 BYTES) ** REEL HEADER ** SERVICE NAME: SSDS DATE: 91/04/29 ORIGIN OF DATA: P21 REEL NAME: BPX CONTINUATION #: 01 PREVIOUS REEL NAME: COMMENTS: REEL SEQUENCE # 1 Ottl PETROLEUM COMPUTING INC.- LIS FORMAT ** TAPE HEADER ** SERVICE NAME: SSDS DATE: 91/04/29 ORIGIN OF DATA: P21 TAPE NAME: BPX CONTINUATION #: 01 PREVIOUS TAPE NAME: COMMENTS: PETROLEUM COMPUTING INC.- LIS FORMAT 14/4/. ********** END OF FILE (EOF # 1) ********** ** FILE HEADER ** FILE SEQUENCE # 1 FILE NAME: P21.MWD SERVICE NAME: SSDS VERSION #: V 3.26 DATE: 91/04/29 MAX. RECORD LENGTH: 1024 FILE TYPE: EO PREVIOUS FILE NAME: ** COMMENTS ** COMPANY: BP EXPLORATION WELL: P-21 API#: 50-029-22148 LAST RUN: il-MAR-91 LOCATION: 2260' FSL & 2019' FWL, SEC. 31, TWP. llN, RANGE 13E, NORTH SLOPE, ALASKA, USA RIG: AUDI #2 CO. REP.: ZARNDT SSDS ENG.: TILLEY & BROWN COMMENTS >>>> ALL NUCLEAR LOGS ARE CALIPER CORRECTED AND CALCULATED ASSUMING A SANDSTONE MATRIX, FORMATION WATER SALINITY 19,000 PPM CL-, FLUID DENSITY OF 1.0 G/C3. DH SOFTWARE V 3.26~ SURFACE SOFTWARE V 1.22. NO TOOL WEAR FACTORS APPLIED. ** DATA FORMAT SPECIFICATION ** ENTRY BLOCKS TYPE SIZE REP CODE ENTRY 4 1 66 255 0 1 66 DESCRIPTION LOG DIRECTION, DOWN TERMINATOR (NO MORE ENTRIES) DATUM SPECIFICATION BLOCKS NAME SERVICE SERVICE UNIT API API API API FILE SZE PROC SPL REPR ID DEPT ROP MWD RHOB MWD FXD MWD DDD MWD FXN MWD DDN MWD NFO MWD NFl MWD NN0 MWD NN1 MWD FXE MWD DDE MWD EWR MWD GRC MWD NPSC MWD CAL MWD NDIS MWD EDIS MWD DEVI MWD TVD CALC ORDER# LOG TYP CLS MOD NO. LVL CODE FT 0 0 0 0 1 4 0 1 68 FT/H 0 0 0 0 1 4 0 1 68 G/C3 0 0 0 0 1 4 0 1 68 HOUR 0 0 0 0 1 4 0 1 68 PPF 0 0 0 0 1 4 0 1 68 HOUR 0 0 0 0 1 4 0 1 68 PPF 0 0 0 0 1 4 0 1 68 CTS 0 0 0 0 1 4 0 1 68 CTS 0 0 0 0 1 4 0 1 68 CTS 0 0 0 0 1 4 0 1 68 CTS 0 0 0 0 1 4 0 1 68 HOUR 0 0 0 0 1 4 0 1 68 PPF 0 0 0 0 1 4 0 1 68 OHMM 0 0 0 0 1 4 0 1 68 API 0 0 0 0 1 4 0 1 68 P.U. 0 0 0 0 1 4 0 1 68 INCH 0 0 0 0 1 4 0 1 68 FT 0 0 0 0 1 4 0 1 68 FT 0 0 0 0 1 4 0 1 68 DEG 0 0 0 0 1 4 0 1 68 FT 0 0 0 0 1 4 0 1 68 ** DATA FORMAT SPECIFICATION ** ENTRY BLOCKS TYPE SIZE REP CODE ENTRY DESCRIPTION 4 1 66 255 0 1 66 LOG DIRECTION, DOWN TERMINATOR (NO MORE ENTRIES) DATUM SPECIFICATION BLOCKS NAME SERVICE SERVICE UNIT API API API API FILE SZE PROC SPL REPR ID DEPT ROP MWD RHOB MWD FXD MWD DDD MWD FXN MWD DDN MWD NFO MWD NFl MWD NN0 MWD NN1 MWD FXE MWD DDE MWD EWR MWD GRC MWD NPSC MWD CAL MWD NDIS MWD EDIS MWD DEVI MWD TVD CALC ORDER# LOG TYP CLS MOD NO. LVL CODE FT 0 0 0 0 1 4 0 1 68 FT/H 0 0 0 0 1 4 0 1 68 G/C3 0 0 0 0 1 4 0 1 68 HOUR 0 0 0 0 1 4 0 1 68 PPF 0 0 0 0 1 4 0 1 68 HOUR 0 0 0 0 1 4 0 1 68 PPF 0 0 0 0 1 4 0 1 68 CTS 0 0 0 0 1 4 0 1 68 CTS 0 0 0 0 1 4 0 1 68 CTS 0 0 0 0 1 4 0 1 68 CTS 0 0 0 0 1 4 0 1 68 HOUR 0 0 0 0 1 4 0 1 68 PPF 0 0 0 0 1 4 0 1 68 OHMM 0 0 0 0 1 4 0 1 68 API 0 0 0 0 1 4 0 1 68 P.U. 0 0 0 0 1 4 0 1 68 INCH 0 0 0 0 1 4 0 1 68 FT 0 0 0 0 1 4 0 1 68 FT 0 0 0 0 1 4 0 1 68 DEG 0 0 0 0 1 4 0 1 68 FT 0 0 0 0 1 4 0 1 68 ** DATA VERIFICATION (every 100 FT) ** DEPT ROP RHOB FXD DDD FXN DDN NF0 NFl NN0 NN1 FXE DDE EWR GRC NPSC CAL NDIS EDIS DEVI TVD 14250. -999. -999. 000 -999.250 -999.250 -999.250 250 -999.250 -999.250 -999.250 250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 14300. -999. -999. 000 -999.250 -999.250 -999.250 250 -999.250 -999.250 -999.250 250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 14400. 468. 68. 000 370.195 3.250 -999.250 500 469.000 2424.000 2296.000 389 51.711 -999.250 -999.250 .630 -999.250 .789 .279 1.205 4.198 -999.250 -999.250 -999.250 14500. 450. 63. 000 229.420 3.250 -999.250 333 461.000 2274.667 2370.667 024 52.781 -999.250 -999.250 .633 -999.250 .652 1.245 1.538 4.821 -999.250 -999.250 -999.250 14600. 575. 113. 000 364.922 3.250 -999.250 000 553.667 2450.667 2301.333 566 46.644 -999.250 -29.229 -999.250 -999.250 .448 .646 25.000 3.156 -28.344 59.046 8789.961 14700. 871. 90. 000 22.251 2.516 -999.250 000 791.000 3192.000 3272.000 681 24.221 8.418 -91.822 3.226 -999.250 5.882 1.490 50.000 10.533 -86.770 58.678 8841.617 14800. 783. 85. 000 25.162 2.562 -999.250 000 791.000 3192.000 3208.000 198 24.985 8.496 -153.606 7.143 -999.250 3.448 1.649 10.000 8.742 -145.122 57.717 8894.320 14900. 799. 52. 000 151.677 2.501 -999.250 000 695.000 3208.000 3240.000 833 25.077 8.669 -214.500 1.105 -999.250 1.282 .402 6.667 6.755 -203.087 56.734 8948.463 15000. 719. 24. 000 165.874 2.455 -999.250 000 695.000 3480.000 3464.000 261 24.740 8.468 -274.630 2.632 -999.250 .840 .705 2.041 2.348 -261.071 56.578 9003.438 15100. 719. 18. 000 169.792 2.365 -999.250 000 711.000 3288.000 3256.000 132 26.607 8.443 -335.833 10.000 -999.250 6.667 .968 2.778 3.176 -317.735 56.460 9058.602 15200. -999. -999. 000 -999.250 -999.250 -999.250 250 -999.250 -999.250 -999.250 250 -999.250 -999.250 -397.334 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -373.992 56.460 9113.854 ** 167 DATA RECORDS ** FROM 14250.00 TO 15250.00 FT ** FILE TRAILER** FILE NAME: P21.MWD SERVICE NAME: SSDS VERSION #: V 3.26 DATE: 91/04/29 MAX. RECORD LENGTH: FILE TYPE: EO NEXT FILE NAME: 1024 ********** END OF FILE (EOF # 2) ********** ** FILE HEADER ** FILE SEQUENCE # 2 FILE NAME: P21.RPT SERVICE NAME: SSDS VERSION #: V 3.26 DATE: 91/04/29 MAX. RECORD LENGTH: 1024 FILE TYPE: RP PREVIOUS FILE NAME: ** COMMENTS ** REPEAT PASS >>>>>>>>>>>>>>>>>>>>>>>>>>>> 1. REPEAT PASS LOGGED AT 40 - 60 RPM DUE TO HIGH TORQUE ** DATA FORMAT SPECIFICATION ** ENTRY BLOCKS TYPE SIZE REP CODE ENTRY 4 1 66 255 0 1 66 DESCRIPTION LOG DIRECTION, DOWN TERMINATOR (NO MORE ENTRIES) DATUM SPECIFICATION BLOCKS NAME SERVICE SERVICE UNIT API API API API FILE SZE PROC SPL REPR ID DEPT RATE REPEAT RHOB REPEAT FXD REPEAT DDD REPEAT FXN REPEAT DDN REPEAT NF0 REPEAT NFl REPEAT NN0 REPEAT NN1 REPEAT FXE REPEAT DDE REPEAT EWR REPEAT GRC REPEAT CAL REPEAT NPSC REPEAT ORDER# LOG TYP CLS MOD NO. LVL CODE FT 0 0 0 0 2 4 0 1 68 FT/H 0 0 0 0 2 4 0 1 68 G/C3 0 0 0 0 2 4 0 1 68 HOUR 0 0 0 0 2 4 0 1 68 PPF 0 0 0 0 2 4 0 1 68 HOUR 0 0 0 0 2 4 0 1 68 PPF 0 0 0 0 2 4 0 1 68 CTS 0 0 0 0 2 4 0 1 68 CTS 0 0 0 0 2 4 0 1 68 CTS 0 0 0 0 2 4 0 1 68 CTS 0 0 0 0 2 4 0 1 68 HOUR 0 0 0 0 2 4 0 1 68 PPF 0 0 0 0 2 4 0 1 68 OHMM 0 0 0 0 2 4 0 1 68 API 0 0 0 0 2 4 0 1 68 INCH 0 0 0 0 2 4 0 1 68 P.U. 0 0 0 0 2 4 0 1 68 ** DATA FORMAT SPECIFICATION ** ENTRY BLOCKS TYPE SIZE REP CODE ENTRY DESCRIPTION 4 1 66 255 LOG DIRECTION, DOWN 0 1 66 TERMINATOR (NO MORE ENTRIES) DATUM SPECIFICATION BLOCKS NAME SERVICE SERVICE UNIT API API API API FILE SZE PROC SPL REPR ID DEPT RATE REPEAT RHOB REPEAT FXD REPEAT DDD REPEAT FXN REPEAT DDN REPEAT NF0 REPEAT NFl REPEAT NN0 REPEAT NN1 REPEAT FXE REPEAT DDE REPEAT EWR REPEAT GRC REPEAT CAL REPEAT NPSC REPEAT ORDER# LOG TYP CLS MOD NO. LVL CODE FT 0 0 0 0 2 4 0 1 68 FT/H 0 0 0 0 2 4 0 1 68 G/C3 0 0 0 0 2 4 0 1 68 HOUR 0 0 0 0 2 4 0 1 68 PPF 0 0 0 0 2 4 0 1 68 HOUR 0 0 0 0 2 4 0 1 68 PPF 0 0 0 0 2 4 0 1 68 CTS 0 0 0 0 2 4 0 1 68 CTS 0 0 0 0 2 4 0 1 68 CTS 0 0 0 0 2 4 0 1 68 CTS 0 0 0 0 2 4 0 1 68 HOUR 0 0 0 0 2 4 0 1 68 PPF 0 0 0 0 2 4 0 1 68 OHMM 0 0 0 0 2 4 0 1 68 API 0 0 0 0 2 4 0 1 68 INCH 0 0 0 0 2 4 0 1 68 P.U. 0 0 0 0 2 4 0 1 68 ** DATA VERIFICATION (every 100 FT) DEPT RATE RHOB FXD NF0 NFl NN0 NN1 GRC CAL NPSC 14250 -999 -999 .000 -999.250 -999.250 -999.250 .250 -999.250 -999.250 -999.250 .250 -999.250 -999.250 DDD FXN DDN FXE DDE EWR -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 14300 -999 -999 .000 -999.250 -999.250 -999.250 .250 -999.250 -999.250 -999.250 .250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 14400 -999 -999 .000 -999.250 -999.250 -999.250 .250 -999.250 -999.250 -999.250 .250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 14500 -999 -999 .000 -999.250 -999.250 -999.250 .250 -999.250 -999.250 -999.250 .250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 14600 527 89 .000 -999.250 3.233 -999.250 .000 519.000 2184.000 2312.000 .059 8.449 52.136 1.235 -999.250 1.370 55.927 1.419 .491 14700 823 93 .000 169.016 2.493 -999.250 .000 839.000 3080.000 2952.000 .450 8.705 27.400 1.064 -999.250 1.031 17.656 2.128 11.448 14800 755 88 .000 164.776 2.552 -999.250 .000 807.000 2968.000 3072.000 .875 8.442 26.863 1.136 -999.250 12.499 -999.250 14900 775 41 .000 173.150 2.462 -999.250 .000 696.600 3259.200 3265.600 .477 8.639 26.695 1.163 -999.250 10.507 2.128 15000 687 22 .000 295.061 2.465 -999.250 .000 695.000 3208.000 3288.000 .966 8.428 25.637 1.754 -999.250 9.981 2.778 15100 651 17 .000 143.059 2.391 -999.250 .000 695.000 3144.000 3256.000 .848 8.489 26.653 1.235 -999.250 9.271 2.439 15200 -999 -999 .000 -999.250 -999.250 -999.250 .250 -999.250 -999.250 -999.250 .250 -999.250 -999.250 1. 112 9.006 ** 143 DATA RECORDS ** 1.120 5.239 ** FILE TRAILER** FILE NAME: P21.RPT SERVICE NAME: SSDS VERSION #: V 3.26 DATE: 91/04/29 MAX. RECORD LENGTH: FILE TYPE: RP NEXT FILE NAME: 1024 3.030 2.326 1. 192 2.685 ********** END OF FILE (EOF # 3) ********** FROM 14250.00 TO 15250.00 FT -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 ** TAPE TRAILER** SERVICE NAME: SSDS DATE: 91/04/29 ORIGIN OF DATA: P21 TAPE NAME: BPX CONTINUATION #: 01 NEXT TAPE NAME: COMMENTS: PETROLEUM COMPUTING INC.- LIS FORMAT ** REEL TRAILER ** SERVICE NAME: SSDS DATE: 91/04/29 ORIGIN OF DATA: P21 REEL NAME: BPX CONTINUATION #: 01 NEXT REEL NAME: COMMENTS: PETROLEUM COMPUTING INC.- LIS FORMAT ********** TAPE TERMINATED BY REEL TRAILER **********