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Home My WebLink About189-058 ON OR BEFORE ocTOBER 24 2000 lc-ap~m LOCATION CLEARANCE REPORT State of Alaska OIL AND GAS CONSERVATION COMMISSION Memorandum To File: API No. Well Name Operator Location ~'D L.- O~F~GiL Abnd Date Compl e ted Note casing size, wt, depth, cmt vol, & procedure. ~ c.~:/3-~/~ ~Z' ~ ~d' ~,-5 7 Perf intervals - tops: Review the well file, and comment on plugging, status, and location clearance - provide loc. Plugs: well head clear, code. Well head cut off: Marker post or plate: Location Clearance: Conclusions: Code Signed Date STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMP LETION REPORT AND LOG 1. Status of Well Classification of Service Well OIL [] GAS [] SUSPENDED [] ABANDONED [] SERVICE [] Pluooed back for redrill 2. Name of Operator 7. Permit Number BP Exploration 89-58 3. Address 8. APl Number P. O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21950 4. Location of well at surface 9. Unit or Lease Name 4560' NSL, 3214' WEL, SEC. 19, T11N, R12E~____.__: i'DDCATIOI~ ,~ Prudhoe Bay Unit ii ~ ' 10. Well Number At Top Producing Interval~! i Z-23 877' NSL, 2394' WEL, SEC. 18, T11N, R12E !' ' i 11. Field and Pool At Total Depth . f Prudhoe Bay Field/Prudhoe Bay Pool 1038' NSL, 2312' WEL, SEC. 18, T11N, R12E 5. Elevation in feet (indicate KB, DF, etc.) 6. Lease Designation and Serial No. RKB = 81' ADL 028262 12. Date Spudded 13. Date T.D. Reached 14. Date Comp., Susp. or Aband. 115. Water Depth, if offshore 16. No. of Completions 6/7/89 6/30/89 04/17/95I N/A feet MSL Zero 17. Total Depth (MD+TVD) 18. Plug Back Depth (MD+TVD ,19. Directional Survey 120. Depth where SSSV set 121. Thickness of Permafrost 9809'MD/9186' TVD 9764' MD/9152' TVD YES [] NO [] None feet MD 1900' (Approx.) 22. Type Electric or Other Logs Run BNCS, CNL/Poro, DIFL/GR, FMT 23. CASING, LINER AND CEMENTING RECORD SE'I-rING DEPTH MD CASING SIZE WT. PER FT. GRADE TOP BOTTOM HOLE SIZE CEMENTING RECORD AMOUNT PULLED 20" Conductor Surface 117' 13-3/8" 68# L-80 Surface 2657' 17-1/2" 3684 cuft Permafrost 9-5/8" 47# NTSOS Surface 9125' 12-1/4" 1894 cuft C/ass G 5-1/2" 17# L-80 8871' 9809' 8-1/2" 541 cu ft 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 (MD) None 9009', 9428', 9630' None . - 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 0CT '1 9 1995 9468'- 9520' 100 sx 'G', Squeezed at 2900psi 8696' EZS V, 95 sx 'G' Squeezed below Alas~t ut~ & 6as Cons, Coma~[t;iJ3 Kick-off Plug, 200 sx 'G' N~chorage 27. PRODUCTION TEST Date First Production Method of Operation (Flowing, gas lift, etc.) Not on production N/A Date of Test Hours Tested PRODUCTION FOR OlL-BBL GAS-MCF WATER-BBL CHOKESIZE IGAS-OIL RATIO TEST PERIOD I Flow Tubing Casing Pressure CALCULATED DIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-APl (corr) Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, 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. SAG 9122' 8661' SHUBLIK A 9157' 8688' ZONE 4 9327' 8819' 0¢1 I 9 1995 .N~J~ ~1 .& Gas Cons. Commission .... ~' N~ch0rage 31. LIST OF A'I-I'ACHMENTS 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed ~ Y ~f-~,v,... Title SeniorOril/ingEngineer DatelO'']''~''(?''~ 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: Z-23A BOROUGH: NORTH SLOPE UNIT: PRUDHOE BAY FIELD: PRUDHOE BAY LEASE: API: 50- PERMIT: APPROVAL: ACCEPT: 04/17/95 11:59 SPUD: RELEASE: OPERATION: DRLG RIG: DOYON 16 WO/C RIG: DOYON 16 04/18/95 ( 1) TD: 9809 PB: 9519 04/19/95 ( 2) TD: 9809 PB: 9519 INSTALL TWC MW: 0.0 MOVE RIG NEAR CAMP. CHANGE OUT #2 MOTOR DUE T/MECHANACAL PROBLEMS. INSTALL NEW HARRISBURG SHALE SHAKER. THE NEW SHAKER SHOULD HANDLE 50% MORE CUTTINGS. RU MOVING SYSTEM & FRONT BEAMS. LAY HERCULITE & MATS ON WELL Z-23A AND CHANGE THE PUMP.LINERS T/7" SPOT RIG OVER THE WELL. LEVEL UP & SHIM. TAKE ON BRINE WATER IN THE PITS. ACCEPT THE RIG ON 4/17 @ MIDNIGHT. SPOT TIGER TANKS & SLOP TANK. SPOT ANADRILL UNIT. RU LUBRICATOR & PULL THE BPV. RD LUB. CIRC OUT DIESEL FREEZE PROTECTION F/TBG & ANNULS. PUMP FULL CIRC. MONITOR WELL & INSTALL THE TWC. PREPARE T/TEST RAMS MW: 0.0 CREW CHANGE. SERVICE THE RIG. HELD SFTY MTG. NU/ND TREE & BOPE. TEST TWC T/350 PSI. ND TREE. NU BOPE. MU 3.5" TDS LND'G JT INTO HNGR. TEST BOPE 250/5000PSI. ANNULAR T/250/2500 PSI. RU LUB. PULL TWC TEST WINESSED BY JOHN SPAULDING W/AOGCC. PU LNDG JT. MU INTO HNGR. BOLDS & UNSEAT THE HNGR. CBU. NO GAS. LOSING APPROX 44 BPH. SPOT 20 BBLS LCM PILL ON BOTTOM. RU & LD 3.5" COMP. STRING. LD SSSV. RECOVERED 31 PROTECTORS & 4 SS BANDS ON CL. TBG LOOKS GOOD. LOSING 10 T/12 BPH. BRINEWATER T/HOLE. CLEAR FLOOR & LD CASG TOOLS. PU 5" TEST JT & TEST PLUG T/TEST LOWER RAMS. OCT 1 9 ]995 A~aska Oil & Gas Cons. Commission Anchorage WELL : Z-23A OPERATION: RIG : DOYON 16 PAGE: 2 04/20/95 ( 3) TD: 9809 PB: 8696 04/21/95 ( 4) TD: 9809 PB: 8696 CHANGING OUT TBG SPOOL MW: 0.0 COMPLETE CHANGING OUT THE BTTM RAMS T/4-1/2" X 7" RAMS. TESTED RAMS'T/250/5000 PSI. RAN WEAR BUSHING. PU 9-5/8" EZSV. MU T/RUNNING TOOL. RIH ON 50 STNDS 5" DP F/DERRICK. CON'T. RIH PU 5" DP T/TOF @ 8705 (DPM). MU CIRC HD, LINES. PU T/8696. SET EZSV @8696. STING INTO RETAINER, EST. INJ RATE oF 3 BPM @ 600 PSI W/9.2 PPG BRINE. UNSTING. BATCH MIX CMT. HELD SFTY OPS MTG. PUMPED 5 BBLS FW. TEST LINES T/4000 PSI. PUMP 5 BBLS FW. PUMPED 20 BBLS (100 SX) OF 15.8 PPG G CMT SLURRY W/ADDITIVES. PUMP 5 BBLS FW. SPOTTED SLURRY T/200' ABOVE STINGER W/RIG PUMPS. STING IN. SQUEEZ OFF EXISTING PERFS. ISP 620 PSI @ 3BPM. FSP 2900 PSI @1.4 BPM. UNSTING. (ALL CMT PUMPED IS BELOW THE RETAINER) POOH 2 STNDS DP. REV. CIRC STRING CLEAN. TEST CASG T/3500 PSI F/30 MIN, OK. HAD 20 PSI BLEED OFF OVER TEST PERIOD. RD HD LINES. MU 9-5/8" STORM PKR. RIH T/28' RT. SET STORM PKR. TEST T/500 PSI. PULLED WEAR BUSHING. MU PACKOFF PULLING, RUNNING TOOL. CHANGED OUT PACKOFF. TEST PACKOFF. COULDN'T GET TEST ON PACK-OFF. WOULD NOT HOLD PRESS. ND BOP@ TOP OF TBG SPOOL. PULL PACKOFF. INSPECT POLISHED STUB, TBG HD. NO VISUAL PROBLEM APPARENT. RESET PACK-OFF. WOULD NOT TEST.' FLUID PUMPING OUT AROUND 1/3 OF THE CIRCUMFERENCE @ THE ToP. PULLED PACKOFF. CHANGED OUT TBG SPOOL. CUTTING WINDOW MW: 0.0 COMPLETED CHANGING OUT THE TBG SPOOL. INSTALLED MODIFIED PACK-OFF. TESTED PACKOFF T/5000PSI. OK. NU BOPE. TESTED BODY T/5000. OK. RETRIEVED STORM PACKER, STRING & LD STORM PCKR. POOH W/EZSV RUNNING TOOL. LD. PU SERIES 7200 SECTION MILL ASSY~ MU BHA. RIH T/TOP EZSV @ 8696. DISPLACED HOLE OVER T/9.9 PPG MILLING FLUID. SPOTTED 80 BBLS OF 18 PPG HI VIS PILL ON BTTM. POOH LD DP T/APPROX WINDOW DEPTH @ 7462. BROKE CIRC @ PLANNED MILLING RATE. CHANGED OUT SHAKER SCREENS T/HANDLE REQ'D FLOW RATE. LOCATED CASG COLLAR @7467 (DPM). LOWERED SECTION MILL T/7472. INITIATED WINDOW CUT @ 7472. CUT T/7486. GOOD METAL RECOVERY @ SHAKER. WELL : Z-23A OPERATION: RIG : DOYON 16 PAGE: 3 04/22/95 ( 5) TD: 9809 PB: 8696 04/23/95 (6) TD: 9809 PB: 8696 CUTTING WINDOW MW: 0.0 MILLED THE SECTION F/7486 T/7489. JETTED FLOWLINE. PLUGGED. DISMANTLED, UNPLUGGED THE FLOW LINE OF METAL CUTTINGS. MILLED SECTION F/7489 T/KELLY DOWN @ 7501. JETTED FLOW LINE @5' INTERVALS. PU & WORK MILL INTO CASING @ THE TOP OF THE WINDOW. SUSPECTED BLADES JAMMED OPEN. CBU T/CLEAN HOLE. CLEAN LINES, SURFACE EQUIP. MADE CONNECTION. BROKE CIRC. COULD NOT GET THE BLADES ON THE MILL T/OPEN. WORKED STRING/MILL-BLADES WOULDN'T OPEN. POOH T/INSPECT THE SECTION MILL. FOUND THE BLADES WERE BENT, JAMMED INTO BODY W/METAL UNDER BLADES. LD SECTION MILL. MU NEW SERIES 7200S SECTION MILL. (3BLADES) MU BHA & RIH T/5000. SLIP & CUT DL. RIH W/MILL T/BTTM OF WINDOW SECTION @7501' CONTINUED MILLING SECTION F/7501 T/7523'. CBU. JETTED FLOW LINE @5' INTERVALS. GOOD METAL RETURNS. TOTAL WINDOW CUT = 51'. PU K/O BHA MW: 0.0 MILLED'SECTION F/7523 T/TD OF WINDOW @7527. TOTAL WINDOW CUT = 55' GOOD METAL RECOVERY THROUGHOUT THE OPERATION. CBU. WORKED MILL THRU WINDOW SECTION. PU INTO CASING. DROPPED BALL. CBU THRU TOP SUB. CLEANED SURFACE LINES, EQUIP. POOH W/SECTION MILL. BLADES ARE 40% WORN. LD MILL. PU MULE SHOE SUB. MU T/5" DP. RIH T/7627, 100' BELOW THE WINDOW, CIRC T/CONDITION MUD & HOLE F/CMT. CIRC @ REDUCED RATE DUE T/HEAD GASKET FAILURE ON BATCH TRUCK. BATCH MIXED CMT, HELD SFTY & OPT. MTG. RIGGED IN BJ. TESTED LINES T/2500 PSI. SET 200 SX OF 17 PPG G BALANCED CMT PLUG F/7627 T/7272. BROKE OUT LINES. POOH 5 STNDS OF DP T/7157. REV. CIRC HOLE CLEAN. SLIGHT CMT CONTAMINATED MUD ON BU ONLY. HESITATED SQUEEZED WINDOW. FSP 2000PSI. BLED OFF T/1850 PSI IN 30 MIN. SQUEEZED AWAY TOTAL OF 1 BBL CMT. POOH W/MULE SHOE SUB. LD 39 JTS OF EXCESS 5" DP. 'LD MS SUB. MU MIX SUB T/KELLY. FLUSH STACK THROUGHLY. SET TEST PLUG. OPENED DOOR T/CHECK F/METAL. NONE. CHANGED OUT LINERS T/6.5" WHILE FLUSHING. CHECKED STACK. BODY TESTED BOP STACK T/5000. LD TEST PLUG. PU K/O BHA. OCT 19 1995 Alaska Oil & Gas Cons. Commissior~ Anchorage MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: David Joh~ Chairman DATE: April 18, 1995 THRU: Blair Wondzell, ~'~7~ FILE NO: ~,/~ P. I. Supervisor FROM: John Spaulding,V,~ SUBJECT: Petroleum Insp AIILDRCD.doc BOPE Test Doyon 16 BPX / PBU / Z-23 Prudhoe Oil Pool P.T.D. 89-58 ,.,Tuesday April 187 1995: I witnessed the BOPE test on Doyon Rig 16, BPX / PBU well Z.-23. The AOGCC BOPE test report is attached for reference. The rig is preparing to pull the production tubing and sidetrack the well. The lower set of pipe rams were not tested at this time due to the tubing head adaptor being in the way of closing the rams. As soon as the tubing is pulled and prior to drilling the sidetrack the lower set of pipe rams and the upper and lower kelly cocks will be tested. Testing went very well with no failures observed. The rig and the surrounding area is well layed out with very good access to the rig. Summary: i witnessed the BOPE test on Doyon rig 16 with no failures, 3 hour test time. Attachment: AIILDRCD.XLS STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION BOPE Test Report OPERATION: Drlg: Drlg Contractor: Operator: Well Name: Casing Size: 9-5/8", 5.5" Test: Initial X Workover: X Doyon Rig No. 16 PTD # BPX Rep.: Z-23 Rig Rep.: Set @ 9125', 9809' Location: Sec. Weekly Other DATE: 4/18/95 Rig Ph.# 659-4610 Everett Potter Wayne Stotts 18 T. l l N R. 12E Meridian Umiat Test MISC. INSPECTIONS: Location Gen.: ok Housekeeping: ok PTD On Location yes Standing Order Posted (Gen) yes Well Sign yes Drl. Rig yes Hazard Sec. yes FLOOR SAFETY VALVES: Upper Kelly / IBOP Lower Kelly / IBOP Ball Type Inside BOP Quan. Pressure P/F I 500/5,000 I 500/5,000 BOP STACK: Annular Preventer Pipe Rams Lower Pipe Rams Blind Rams Choke Ln. Valves HCR Valves Kill Line Valves Check Valve Quan. Test Press. 1 300/3,000 I 500/5,000 500/5,000 500/5,000 2 500/5,000 1 500/5,000 P/F P P P P P P N/A CHOKE MANIFOLD: No. Valves No. Flanges Manual Chokes Hydraulic Chokes Test Pressure 14 5OO/5, OOO 43 500/5,000 Functioned Functioned P/F P P P P ACCUMULATOR SYSTEM: System Pressure 3,000 I P PressureAfter Closure ~,600 I P MUD SYSTEM: Visual Alarm 200 psi Attained After Closure minutes 28 sec. Trip Tank ok ok System Pressure Attained I minutes 43 sec. Pit Level Indicators ok ok Blind Switch Covers: Master: yes Remote: yes Flow Indicator ok ok Nitgn. Btl's: 6 Ea. Average Meth Gas Detector ok ok 2300 Psig. H2S Gas Detector ok ok Number of Failures: 0 ,Test Time: 3.0 Hours. Number of valves tested 18 Repair or Replacement of Failed Equipment will be made within 0 days. Notify the Inspector and follow with Written or Faxed verification to the AOGCC Commission Office at: Fax No. 276-7542 Inspector North Slope Pager No. 659-3607 or 3687 If your call is not returned by the inspector within 12 hours please contact the P. I. Supervisor at 279-1433 REMARKS: The lower pipe rams, upper and lower kelly cocks were not able to be tested until the production tubing and hanger were removed from the well. Distribution: orig-Well File c - Oper./Rig c- Database c - Trip Rpt File c - Inspl~l~{'L (Eev. 12/94) STATE WITNESS REQUIRED? YES NO 24 HOUR NOTICE GIVEN YES NO ~illl Waived By: Witnessed By: )RCD.XLS STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon x Suspend __ Operation Shutdown __ Re-enter suspended well .__ Alter casing __ Repair well __ Plugging x Time extension Stimulate __ Change approved program __ Pull tubing __ Variance __ Perforate __ Other__ Plugback for redrill 2. Name of Operator 5. Type of Well: 6. Datum elevation (DF or KB) BP Exploration Development x KBE- 92 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 720' SNL, 3213' WEL, SEC. 19, T11N, R12E At top of productive interval 4403' SNL, 2394' WEL, SEC. 18, T11N, R12E At effective depth At total depth 4242' SNL, 2312' WEL, SEC. 18, T11N, R12E Z-23 (34-18-11-12) 9. Permit number 89-58 10. APl number 50- 029-21950 11. Field/Pool Prudhoe Bay Field/Oil Pool feet 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical 9809 feet Plugs (measured) 9315 feet (BKB) 9704 feet Junk (measured) 9211 feet (BKB) Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: Length Size Cemented Measured depth 82' 20" 118' 2621' 13-3/8" 3684 cu ft Permafrost 2657' 9089' 9-5/8" 1894 cu ft Class G 9125' 937' 5-1/2" 541 cuft Class G 9809' measured 9468'-9509', 9512'-9520' (Open) 9552'-9592' (Squeezed) true vertical 8990'-9029', 9033'-9040' (Open) 9070'-9108' (Squeezed) Tubing (size, grade, and measured depth) 3-1/2" 9.2# L-80 to 8873' True vertical depth 118' 2657' 8663' RECEIVED /~PR - 4 1995 & Gas Cons. Commission Anchorage Packers and SSSV (type and measured depth) Three CTC Formation Packers @ 9010'; 9427' and 9631'; SSSV @ 2075' 13. Attachments Description summary of proposal x Detailed operations program __ BOP sketch 14. Estimated date for commencing operation 4/10/95 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 certify that the foregoing is true and correct to the best of my knowledge. Signed Title Drilling Engineer Supervisor FOR COMMISSION USE ONLY Conditions of approval: NOtify Commission so representative may witness Plug integrity f 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 $1GNE:D RUSSELL A. D01 Date I Approval NO. c:~._._ ~¢:~7 ~pproved Copy Returned cq// z. '/ ommissioner Date SUBMIT IN TRIPLICATE . . , , . , , , Z-23 P&A SUMMARY PROCEDURE Pre-rig work: Complete pre-rig annular communications diagnostics and packoff test to evaluate the presence or absence of annular communication. Cut tubing. Kill well. Freeze protect. MIRU rig. Pull BPV. Circulate out freeze protection fluid. Insure packoff has been tested. If not, have Drill Site Maintenance test packoff. Set TWC. ND tree and tubing head adapter. NU BOP's. Test BOP's to 5000 psi. Test annular to 250/2500 psi. Pull tree test plug and BPV. Note AOGCC witness or waiver on the morning report. Pull and lay down ~-1/2" tubing. Note on the morning report the visual condition of the tubing. TIH w/EZSV & set same above stub at approximately 8750'. Squeeze perfs (9468-9520') w/lO0 sx (1.15 yield) mixed at 15.8 ppg below retainer, Cement volume is calculated as follows: Retainer @ 8710' 3-1/2" tubing stub @ 8720' 9-5/8" 4 7# 3-1/2" 9.3# 5-1/2" 17# 8710'-8720' 8720'-8872' 8872'-9620' (ft)(ft3/ft) (ft3) (10')(0.4110) = 4.11 (152)(0.04883) = 7.42 (748)(0.1305) = 97.61 Total: 109.14 Sx Cmt = 109.14/1,15 = 95 sx Test the 9-5/8" casing to 3500 psi for ten minutes. Replace packoff if pre-rig PPPOT failed. RECEIVED APR - 4 199§ Alaska 0il & Gas Cons. Commission Anchorage Redrill Plan Summary Page 4 TREE: 3-1/8"- 5,000psi, FMC ACUATOR: Baker CAC WELLHEAD: 13-5/8"- 5,000psi, FMC Z-23 KB ELEV: 91.74 ft. BF ELEV: 55.36 ft. 13-3/8", 68#/ft, L-80, Btrs. 2,657' TUBING: 3-1/2", 9.2#/ft, L-80, TDS, Non-IPC I.D. = 2.992" Drift = 2.867" Capacity = 0.00871 bbl/ft 5-1/2" liner tie-back sleeve (5.75" I.D.) TOP OF 5-1/2" I LINER I 8,872' 9-5/8", 47#/ft, NT-80S, NSCC 9,125' PERFORATION SUMMARY REF. LOG: EWR 7/1/89 INTERVAL STATUS 9468-9509 9512-9520 9552-9592 OPEN OPEN SQZ'D 1 1/2" O D S/O G LV DROPPED 6/26/90 PBTD 5-1/2", 17#/ft, L- 80, TC4S I 9,764' 9,809' DATE 10/18/89 COMMENTS Initial Completion SSSV Landing Nipple I 2,075' Otis, (2.750" Min. I.D.) I Gas Lift Mandrels, (Camco) 1-1/2", R__~K Latch No. MD-BKB TVDss ANG 2,990' 2898 01 5~127' 5034 01 6~505' 6402 13 7~376' 7197 32 8~000' 7693 38 8.560' RIRR 37 8,743' 8278 38 3-1/2" Otis "X" Nipple 2.750" Min. I.D. Seal Assy. (TIW) I (SBR, 12' Long) (5.438" I.D.) 9-5/8" Packer TIW (HBBP) (4.00" O.D.) 8,773' 8,795' 3-1/2", 9.2#/ft, L-80, TDS, Tailpipe 3-1/2" Otis "X" Nipple 2.750" Min. I.D. 3-1/2" Otis "X" Nipple 8,860' 2.750" Min. I.D. 3-1/2" WLEG 8,872' (Landed in liner hanger tie- back sleeve) (5.25" O.D.) I ELMD I 8,872 EXTERNAL I CASING PACKER 9,009' (CTC) (34' long) "~-- MARKER JOINT I 9,403' I EXTERNAL ~ CASING PACKER 9,428' APR ,- 4 1995 ~Jit & Gas Cons. Commission Anchora~!e ,~._._ EXTERNAL CASING PACKER (CTC) (34' long) 9,630' ~'~'FISH- PERF GUN BULLNOSE (21/8 GUN 7" LONG.) PRUDHOE BAY WELL: Z- 23(34-18-11-12) APl NO. 50-029-21950 SEC. 19, T-11 N, R-12E BP EXPLORATION (ALASKA)Inc. STATE OF ALASKA AL~,.,KA OIL AND GAS CONSERVATION COMMISb,-,N REPOR, T OF SUNDRY WELL OPERATIONS 31)eration, stimulate Plugging Perforate Pull tubing Alter casing Repair well Other X 1. Operations performed: Operation shutdown 2. Name of Operator 5. Type of Well: 6. Datum elevation (DF or KB) BP Exploration (Alaska)/nc. 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 720' SNL, 1739' EWL, SEC. 19, T11N, R12E, UPM At top of productive interval 713'NSL, 2417' WEL, SEC. 18, T11N, R12E, UPM At effective depth 927' NSL, 2391' WEL, SEC. 18, T11N, R12E, UPM At total depth 950' NSL, 2215' WEL, SEC. 18, T11N, R12E, UPM Development X Exploratory Stratigraphic Service KBE = 91.74 AMSL feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-23 (34-18-11-12) PBU 9. Permit number/approval number 89-58/9-999 10. APl number 50- 029-21950 11. Field/Pool Prudhoe 0il Pool 12. Present well condition summary Total depth: measured true vertical 9809feet BKB 9186feet Effective depth: measured 9764feet true vertical BKB 9152feet Plugs (measured) Junk (measured) Casing Length Size Cemented Measured depth True vertical depth Structural -- BKB Conductor 80 20 117 117 Surface 2620 13 3/8 3697 c.f. 2657 2657 Intermediate 9088 9 5/8 1894 c.f. 9125 8664 Production -- Liner 937 5 1/2 541 c.f. 8872-9809 8469-9186 Perforation depth: measured 9552'- 9592' true vertical subsea 8898'-8929' Tubing (size, grade, and measured depth) 3 1/2" L-80 to 8796' with 3 1/2" tailpipe landed in liner hanger tieback sleeve at 8873' Packers and SSSV (type and measured depth) 13. Stimulation or cement squeeze summary See Attachment Intervals treated (measured) Treatment description including volumes used and final pressure 9 5/8" TIWHBBPpacker at 8796'; 3 1/2" SSSVat 2075' (3) external casing packers at 9009', 9428', 9630' ~ ~ ~ ~ i \1 F ~ APR - 1 199 Alaska 0il & Gas Cons. comm~sS~O~ Anchorage 14. Prior to well operation Subsequent to operation Representative Daily Average Production or Injection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure S.L S.L Tubing Pressure 15. Attachments Copies of Logs and Surveys run Daily Report of Well Operations 16. Status of well classification as: Oil X Gas Suspended Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Si~lned ~,~ . Title Senior Technica/Assistant I Form 10-40~ Rev 06/15/88 /- Date ~.~/,~ ~/~,.~ SUBMIT IN DLI~LIO/AYE. WELL Z-23(34-18-11-12) Non-RigWorkOver Approval#9-999 1 2/29/8 9 A NRWO CTUWO was performed using the following fluids: 158 bbls Prod. H20 to circulate well 5 bbls EFF H20(Spacer) 15 bbls Cement 34 bbls EFF H20 18 bbls GEL 163 bbls PW to Displace and Rev Out Class G Cement: FL32.53%, CD31 .2%, Rll .25%, A-2.2%, FP6L 1 GAL Well Cleaned Out to 9700 FT. Gas Cap to 3000 FT. Leave well with 1750 PSI S/I Pressure fjh 3/29/93 RE( EJVED APR - 1 199~ Alaska Oil & Gas Cons. Colnmissi°''~' Anchorage BP EXPLORATION BP Exploration (Alaska) Inc.. 900 East Benson Boulevan3 PO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO: DISTRIBUTION Date: 10/16/90 T#:81597 FROM' SUBJECT: Information Control Well Records LR2-1 BP CASED HOLE FINAL,~ Enclosed is your copy of the matedal listed below. If you have any questions, please contact BP Well Records at (907) 564-4445. /'G'~05 COLLAR 10/12/90 #1 10900-11168 ATLAS 5" ...(~05 GR 10/12/90 #1 10800-11043 ATLAS 5" INJ 09/28/90 #1 9550-9895 CAMCO 5" INJ 09/28/90 #1 10650-10845 CAMCO 5" INJ 09/25/90 #1 8450-9887 CAMCO 5" ~7-~:~5 PROD-F 09/26/90 #1 9800-10174 CAMCO 5" .Z--~3 PERF 10/10/90 #1 9300-9684 SCH 5" Distribution: ARCO CHEVRON EXXON GEOSCIENCES MOBIL PHILLIPS RESERVOIR ARCHIVES RECEIVED Alaska 011 & G~ Cops. Con~ BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO, Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 To: From: Subject: DISTRUBUTION Information Control Well Records LR2rl,, B~..,gASED,,HOLE FINAL LOGS Date: 04/25/90 · Transmittals.'. 81078 · .. ~ -;.. ,'. , ,. Enclosed is your questions, please .. ,. copy of the material listed below.' If contact BP Well Records at (907) 564-4445. you have any E-26 R-13 W-24 W-37 Z-23 Z-25 Spinner/Temp PRDO-F CCL Spinner/Temp PERF Temp/PITS 12/15/89 #1 9300-9670 12/19/89 #1 9600-9956 12/21/89 #1 8750-9100 12/14/89 #1 9800-10228 12/12/89 #1 9383-9731 12/17/89 #1 i1250-11735 HLS 5" HLS 5" HLS 5" HLS 5" HLS 5" HLS 5" Distribution: ARCO CHEVRON EX]fON GEOSCIENCES MOBIL PHILLIPS APR g ,5 1990 Anchomlle BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 To: Distribution Date: 01/09/90 Transmittal: 80774 From: Information Control Well Records LR2-1 Subject: BP CASED HOLE FINAL LOGS Enclosed is your copy of the material listed below. If you have any questions, please contact BP Well Records at (907) 564-4445. D-18 Perf 01/03/90 91 10680-11278 Sch 5" Z-23 Perf 01/04/90 ~1 9000-9717 Sch 5' Distribution: ARCO C~EVRON EXXON GEOSCIENCES MOBIL PHILLIPS RESERVOIR ARCHIVES BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 To: Distribution Date: 11/28/89 · ,~ · Transmittal: 80628 From: Information Control Well Records LR2-1 Subject: BP CASED HOLE FINAL LOGS Enclosed is your copy of the material listed below. If you have any questions, please contact BP Well Records at (907) 564-4445. G-32 CNL 11/24/89 ~1 8750-89542 Atlas 5" J-18 CNL 11/25/89 #1 11900-12756 Atlas J-21 CNL 11/23/89 #1 9060-9684 Atlas R-05i CCL 11/25/89 91 9000-9176 Atlas Z-23 CCL 11/21/89 ~i 9200-9705 Atlas Distribution: ARCO CHEVRON EXXON GEOSCIENCES HOUSTON MOBIL PHILLIPS ARCHIVES BP EXPLORATION November 13, 1989 BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Attention: Mr. C. V. Chatterton Well Z-23 (34-18-11-12) PBU Gentlemen: Enclosed, in triplicate, is Form 10-403, Application for Sundry Approvals, for the above-named well. This contains our proposal to perform a cement squeeze and reperforation of the well. Yours very truly, Manager Production Engineering JAM: JAM Enclosures (9) cc: L. Burke (MB12-1) Well File RECEIVED NOV 1 ~ 1989 '~,~t~a Oil.& Gas Cons. Commis$io~ ~ Anchora~ STATE OF ALASKA AL...~, OIL AND GAS CONSERVATION COMMI,5,...~N ~.. ~ ~ F APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon ~ Suspend Alter casing ~ Repair well _ Change approved program 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 720' SNL, 1739' EWL, SEC. 19, T11N, RI2E, UPM At top of productive interval 713' NSL, 2417' WEL, SEC,. 18, T11N, R12E, UPM At effective depth 927' NSL, 2391' WEL, SEC. 18, T11N, R12E, UPM At total depth 950' NSL, 2215' WEL, SEC. 18, T11N, R12E, UPM 12. Present well condition summary Total depth: measured 9809 feet true vertical BKB 9186 feet Operation Shutdown ~ Plugging ~ Pull tubing ~ Variance __ 5. Type of Well: Development x Exploratory ~ Stratlgraphlc ~ Service Re-enter suspended well Time extension Stimulate Perforate Other X 6. Datum elevation (DF or KB) KBE ,, 91.74 AMSL feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-23 (34-18-11-12) PBU 9. Permit number 89-58 10. APl number 50- 029-21950 11. Field/Pool Prudhoe Oil Pool RECEIVED Plugs (measured) Effective depth: measured 9764 feet Junk (measured) ~OV ~. ~ ]989 true vertical BKB 9152 feet .!-~s~: ~jJ & Gas C013S. Com~i$~ Casing Length Size Cemented Measured depth Tru~l~l~epth Structural -- BKB Conductor 80 20 117 117 Surface 2620 13 3/8 3697 c.f. 2657 2657 Intermediate 9088 9 5/8 1894 c.f. 9125 8664 Production Liner 937 5 1/2 541 c.f. 8872-9809 6469-9186 Perforation depth: measured 9552'. 9592' true vertical subset 8898'-8929' Tubing (size, grade, and measured depth) 3 1/2"L-80 to 8796' with 3 1/2" tailpipe landed in liner hanger tieback sleeve at 8873' Packers and SSSV (type and measured depth) 9 5/8" TIW HBBP packer at 8796'; 3 1/2" SSS V at 2075' (3) external casing packers at 9009', 9428', 9630' 13. Attachments Description summary of proposal 3( Detailed operations program BOP sketch 14. Estimated date for commencing operation 15. Status of well classification as: November 1989 16. If proposal was verbally approved Oil × Gas ~ Suspended Name of approver Date approved Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Sit, ned (~~ ~/'~~ Title Manac~ler Production En~lineerin~l /// ///,./ FOR COMMISSION USE ONLY Condi~j(~ns of approval: Notify Commission so representative may witness Plug integrity ~ BOP Test ~ Location clearance ~ Mechanical Integrity Test ~ Subsequent form required 10- ~-~o/(' Approved by order of the Commission Form 10-403 Rev 06/15/88 ORIGINAL SIGNED BY I Approv, a, No. i1./ -/ · . ...... · .... ~m~issi°ner Date SUBMIT IN TRIPLICATE Z-23 General Procedure for CTU Squeeze October 18, 1989 , , . , . Move in CTU. Pump 15 barrels of Class G cement across Zone 3 perforations and perform walking squeeze. Dilute 1:1 with Bio-zan polymer, pump 10 bbl polymer plug, then reverse out contaminated slurry and plug. Perform inflow test. Resqueeze as necessary. Perforate as follows' Interval SPF 9512-9520' 4 Comments test perfs to measure extent of water saturation 9468-9500' 4 9468-9509' 4 9468-95OO' 4 shoot IFF test perfs produce oil at WC<30% shoot IFF test perfs produce oil at WC>30% shoot IFF test perfs produce oil at WC>90% If the test perfs produce at a WC>90%, the test perfs will be isolated with a bridge plug and the .remaining proposed interval perforated (9468-9500' MD). 6. Put well on production and obtain well test as soon as production stabilizes. Coiled Tubing Blow-Out-Preventers Coiled Tubing Pack-Off Blind Rams Cutter Rams 2" Chicksan (Kill Line) Slips J===~ Pipe Rams Pump-in Sub (C ircula te/R e turns ) W ell Head Swab Valve BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907} 561-5111 To: Distribution Date: 08/24/89 Transmittal: 80297 From: Information Control Well Records LR2-1 Subject: BP CASED EOLE FINAL LOGS Enclosed is your copy of the material listed below. If you have any questions, please contact BP Well Records at (907)564-4445. F-01 CCL 08/08/89 92 8600-9138 Camco F-03 Leak Der. 08/12/89 91 1360-11147 Camco M-04 PROD-F 08/11/89 91 3050-11632 Camco 5" Y-17 PROD-F 08/10/89 93 2900-10476 Camco Z-23 PITS 08/14/89 ~1 9400-9760 Camco 5" Distribution: ARCO CHEVRON EXXON GEOSCIENCES EOUSTON MOBIL PHILLIPS ARC~IVES BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O, Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO: HOUSTON 'ARCO CHEVRON EXXON TEXACO MOBIL PHILLIPS ARCHIVES DATE: 08-08-89 Tf: 80249 BP FINAL DATA - PRESSURE SURVEY DATA The following material is being submitted herewith. Please acknowledge receipt by signing a copy of this letter and returning it to this office G-18 Bottom-Hole Pressure Survey 07-12-89 50-029-20620 Z-23 Bottom-Hole Pressure Survey 07-15-89 50-029-21950 Received: Date: Information Control Well Records LR 2-1 J. Dietz/S. McCurry BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO, Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO: HOUSTON ARCO CHEVRON ~EXXON MOBIL PHILLIPS STATE! iOF iALASKA GEOSCIENCES DATE: 24-JUL-89 T4:80199 ARCHIVES BP OPEN HOLE FINAL LOGS The following material ie being submitted herewith. Please acknowledge receipt by siging a copy of this letter and returing it to this office: HOU/UNIT/STATE: Z-23 CNL PORO 01-JUL-89 #1 9117-9808 SPERRY Z-23 CNL PORO 01-JUL-89 41 8569-9099 SPERRY 5" Z-23 EWR GR 01-JUL-89 #1 9117-9808 SPERRY 2"/5" Z-23 EWR GR 01-JUL-89 41 8569-9099 SPERRY 5" STATE ONLY: DIRECTIONAL SURVEYS Magnetic Single Shot Directional Survey Date: Job4: Gyroscopic Directional Survey D JaCob4: Received: on Control Well Recor Date: 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 August 18, 1989 Alaska Oil & Gas Conservation Commission 3001 Porcupine Dr. Anchorage, Alaska 99501 Attn' Mr. C. V. Chatterton Well Z-23 (34-18-11-12) PBU Enclosed, in duplicate, is form 10-407, our Report of Well Completion for the above named well. This information reflects the current condition and status of the well. Also enclosed are two copies each of daily drilling reports, directional and gyroscopic surveys, and open hole logs. Yours very truly, J. G. Vidrine Drilling Engineering Supervisor JGV/KTH Enclosures (4) J. Martin (MB 9-4) Well Records w/10 Well File RECEIVED Alaska Oil & Gas Cons. Corn~lisSfOll ' '~.. ~chorage - ALASK~ OIL AND GAS CONSERVATION ,.. AMISSI WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Status of Well Classification of Service Well OIL [] GAS [] SUSPENDED [] ABANDONED [] SERVICE [] 2. Name of Operator 7. Permit Number BP Exploration 89-58 3. Address 8. APl Number P. O. Box 196612, Anchora~Te, Alaska 99519-6612 50- 029-21950 4. Location of well at surface , . ~ _~,~..,~.-.,.,.__.. 9. Unit or Lease Name 720' SNL, 3213' WEL, SEC. 19, T11N, R12E~[ [.o¢-,,A'rlON,S ~ Prudhoe Bay Unit At Top Producing Interval Well Number 4566'SNL, 2417' WEL, SEC. 18, T11N, R12E ~. 11. Field and Pool At Total Depth i~r - i.';;~.M-_ Prudhoe Bay Field/Prudhoe Bay Pool 4329' SNL, 2215' WEL, SEC. 18, T11N, R12E 5. Elevation in feet (indicate KB, DF, etc.) 16. Lease Designation and Serial No. KBE = 91.74' I ADL 28262 12. Date Spudded 13. Date T.D. Reached 14. Date Comp., Susp. or Aband.~__.. 115. Water Depth, if offshore 116. No. of Completions 6/7189 6/30189 ~ NIA feet MSL One 17. Total Depth (MD+TVD) 18. Plug Back Depth (MD+TVD) 19. Directiona') Survey 120. Depth where SSSV set ]21. Thickness of Permafrost 9.809'MD/9186' TVD 9764'MD/9152' TVD YES [] NO [] ] 2075 feet MD ] 1892' 22. Type Electric or Other Logs Run .... .CNL/Poro, ~.qR OR 23. CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD CASING SIZE WT. PER FT. GRADE TOP Be'FI'OM HOLE SIZE CEMENTING RECORD AMOUNT PULLED 20" Conductor Surface 117' 13-3/8" 68# L-80 Surface 2657' 17-1/2" 3697 cu fl Permafrost 9-5/8" 47# NTSOS Surface 9125' 12-1/4" 1894 cu fl Class G 5-1/2" 17# L-80 8871' 9809' 8-1/2" 541 cuft Class G 24. Pedorations open to Production (MD+TVD of Top and Bottom and 25. TUBING RECORD interval, size and number) SIZE DEPTH SET (MD) PACKER SET (MD) Schlumberger3-3~8"@ 4 spf 3-1/2" 9.2# L-80 8873' 9-5/8"@ 8796' MD TVDss (3) External CTC @ 9010'; 9427'; 9631' 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. 9552' - 9592' 8898' - 8929' DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 13-3/8" X 9-5/8" Down Squeezed Annulus with 175 BBLS Dry Crude. 27. PRODUCTION TEST D'aie First Production JMethod of Operation (Flowing, gas lift, etc.) July5, 1989 [ Flowin~l Date of Test Hours Tested ~PRODUCTION FOR OIL-BBL GAS-MCF WATER-BBL CHOKE SITF JGAS-OIL RATIO TEST PERIOD Flow Tubing Casing Pressure CALCULATED OIL-BBL GAS-MCF ~ATER-BBL OIL GRAVITY-APl (corr) Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips, and presence of oil, gas or water. Submit core chips. RECEIVED AUG 2 2 t989 Naska 0ii & Gas Cons. Commlssl011 ' ~ Anchorage Form 10-407 Submit in duplicate Rev. 7-1-80 CONTINUED ON REVERSE SIDE 29. ~ -, ~ 30. ~,¢: ~~IC MARKERS vlATION TESTS NAME Include interval tested, pressure data, all fluids recovered and gravity, MEAS. DEPTH TRUE VERT. DEPTH GOR, and time of each phase. SAG 9122' 8661' SHUBLIK A 9157' 8688' ZONE 4 9327' 8819' 31. LIST OF ATTACHMENTS 32. I hereby certify that the foregoing is true and correct to the best of my knowledge ~ Signed ~'~' 7/::,,~' ,~(~ t/ Title Drilling Engineering Supervisor Date /'¢//'/z¢/(~' 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 EX]q. ORJ~'ION Daily Drilling Report -- Prudhoe Bay Unit June 7, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 620' Day: 0 24- Hour Ftg: 0 Current Operation: Drilling. Accepted rig 1500 hrs. 6-6-89. Spudded well 0100 hrs. 6-7-89. Drilled 17-1/2" hole to 620'. Mud Type: SPUD WT: 9.6 VIS: 175 PV: 35 YP: 33 FL: 9.4 Solids: 7 Temp: .SURVEY MD . ANGLE . DIRECTION ,TVD SECTION. ,COORDINATES 47~F Daily Drilling Report -- Prudhoe Bay Unit June 8, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 2460' Day: 1 24- Hour Ftg: 1840' Current Operation:' Drilling. Drilled 17-1/2" hole to 2460'. MudType: SPUD WT: 10.4 VIS:60 PV:28 $~RVEY MD ANGLE DIREr'ION,. TVD YP: 17 FL: 6.8 SECTION Solids: 9.5 Temp: COORDINATES_ oF DLS. BP EXPLOR~;i'ION Daily Drilling Report-- Prudhoe Bay Unit June 9, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 2677' Day: 2 24- Hour Ftg: 217' Current Operation: Rig up to test BOP's. Drill 17-1/2" hole to 2677'. Run and cement 13-3/8" casing. Nipple up and test BOP's. Mud Type: NON DISP SUR,VEY MD WT: 10.4 VIS:58 PV:25 YP: 15 FL:7.5 Solids:9.5 Temp: ANGLE DIRECTION TVD · SECTION COORDINATES. 64 °F DLS. BP EXPLORATION Daily Drilling Report-- Prudhoe Bay Unit June 12, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 5800' Day: 5 72- Hour Ftg: 3123' Current Operation: Working stuck pipe. RU and test BOP's. Cleaned out float equipment and cement. Drilled 12-1/4" hole to 5800' KOP. Circulate pill. POH, hole tight and swabbing. Mud Type: DISP SURVEY MD WT: 10.1 VIS:39 PV: 18 ANGLE DIRECTION TVD YP: 9 FL: 4.6 SECTION Solids: 10.5 Temp: COORDINATES. 84 °F DLS BP EXPLORATK~N Daily Drilling Report -- Prudhoe Bay Unit June 13, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 5800' Day: 6 24- HourFtg: 0 Current Operation: RIH to screw into fish. Working stuck pipe. Mud Type: DISP SURVEY MD WT: 10.1 ANGLE VIS: 48 PV: 18 YP: 6 FL: 4 DIRECTION TVD SECTION Solids: 10.5 Temp: °F COORDINATES DLS BP EXPLOR~N o Daily Drilling Report -- Prudh°e Bay Unit June 14, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 5800' Day: 7 24- Hour Ftg: 0 Current Operation: Tripping out. Jar on fish. Pipe parted damaging top drive. Repair top drive. Mud Type: DISP ,SVRVEY ,MD WT: 10.05 VIS:57 PV: 17 YP: 6 FL: 10.2 AN(3LE DIRE~'TIQN TVD SE~'TIQN Solids: 10.2 Temp: COORDINATES 59°F DL$, BP EXPLORN'ION Daily Drilling Report -- Prudhoe Bay Unit June 15, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 5800' Day: 8 24- Hour Ftg: 0 Current Operation: POH. POH with fishing string. RIH with 3-1/2" drillpipe. RU Halliburton and cement with 500 sk Class G (Top of fish @ 4216'). Mud Type: DISP SURVEY ~ WT: 10 VIS: 48 PV: 13 YP: 4 FL: 4.6 Solids: 10 Temp: .,ANGLE DIRECTION TVD SECIION COORDINATES 60°F ,DLS BP EX~ORN'iON Daily Drilling Report-- Prudhoe Bay Unit June 16, 1989 at 0600 hrs Rig: Audi #2 Well. Z-23 (34'18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 3700' Day: 9 24- Hour Ftg: 156' Current Operation: Dyna drilling. Test BOP's. R.IH to 3440'. Ream good cement to 3544'. RIH with mud motor to 3544'. Dyna drilling. Mud Type: DISPERSED WT: 10 SURVEY MD ANGLE VIS: 45 PV: 13 YP: 6 FL: 5.2 Solids: 10 Temp: 60 °F DIRECTION TVD SE~q'ION COORDINATES DLS BP EXIq. ORNION Rig: Audi #2 Well: Z-23 (34-18-11-12) Daily Drilling Report-- Prudhoe Bay Unit June 19, 1989 at 0600 hrs AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 5915' Day: 12 72- HourFtg: 2215' Current Operation: Drilling. Sidetrack old hole @ 4029'. Drilled 12-1/4" hole to 5915'. Mud Type: DISPERSED WT: 10.2 VIS: 45 PV: 19 SURVEY MD ANGLE DIRECTION TVD YP: 9 FL: 4.2 SE~'TION Solids: 11 Temp' 92 °F COORDINATES DL$ BP EXPLOR~N Daily Drilling Report -- Prudhoe Bay Unit June 20, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 6533' Day: 13 24- Hour Ftg: 618' Current Operation: Change BHA. Drilled 12-1/4" hole to 6533'. Mud Type: DISPERSED WT: 10.4 SURVEY MD ANGLE VIS: 53 PV: 23 YP: 10 FL: 3.8 DIRE~'TIQN ~ SECTION Solids: 12.5 Temp: 95 °F COORDINATES DLS BP EXPLORKriON Rig: Audi #2 Well: Z-23 (34-18-11-12) Daily Drilling Report -- Prudhoe Bay Unit June 21, 1989 at 0600 hrs AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 6845' Day: 14 24- Hour Ftg: 312' Current Operation:' Drilling. Drilled 12-1/4" hole to 6845'. Mud Type: DISPENSED WT: 10.4 $12'RVEY MD ANGLE VIS:58 PV: 17 YP: 7 FL: 4.0 DIRE~I"IQN TVD SECTION Solids: 12.8 Temp: COORDINATES 85°F DLS Bi~ EXFLORN~ON Daily Drilling Report -- Prudhoe Bay Unit June 22, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 7209' Day: 15 24- Hour Ftg: 364' Current Operation: Drilling. Drilled 12-1/4" hole to 7209'. Mud Type:DISPERSED WT: 10.4 VIS:45 PV:22 SURVEY MD ANGLE DIRE~WIQN TVD YP: 14 FL: 3.8 SECTION Solids: 12.5 Temp: 94 °F COORDINATES DL$ BP EXPLOR~N Daily Drilling Report-- Prudhoe Bay Unit June 23, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 7683' Day: 16 24- Hour Ftg: 474' Current Operation: Drilled 12-1/4" hole to 7683'. Mud Type: DISP ,SURVEY MD WT: 10.4 VIS:41 PV: 16 ANGLE. DIRECTION TVD YP: 10 FL: 3.4 SEmi'ION Solids: 12.5 Temp: 90 °F COORDINATES DL$ BP EXPLOR~N Daily Drilling Report -- Prudhoe Bay Unit June 26, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 Al)I: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 9133' Day: 19 72- Hour Ftg: 1450' Current Operation: Testing 9-5/8" pack-off. Drilled 12-1/4" hole to 9133' TD. Ran and cemented 9-5/8" casing. Mud Type: DISP ~,URVE¥ MD WT: 10.4 VIS:37 PV: 12 ANGLE DIRECTION TVD YP: 7 FL: 3.4 SECTION Solids: 12 Temp: 95 °F COORDINATES DLS BP EXPLOR~N Daily Drilling Report -- Prudhoe Bay Unit June 27, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 9259' Day: 20 24- Hour Ftg: 126' Current Operation: Drilling. Tested packoff, failed twice. Tested BOP's. Tested packoff to 5000g - OK. R_IH. Tested casing to 3000 psi. - OK. Drilled out float equipment and cement. Drilled 8-1/2" hole to 9259'. Mud Type: DISP WT: 9.5 VIS: 36 PV: 9 YP: 4 FL: 7.0 Solids: 8.5 Temp: 75 °F ANGLE DIRECTION TVD SECTIQN COORDINATES DLS BP EXPLORN'K~N Rig: Audi #2 W~ll: Z-23 (34-18-11-12) Daily Drilling Report-- Prudhoe Bay Unit June 28, 1989 at 0600 hrs AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 9584' Day: 21 24- Hour Ftg: 325' Current Operation: Spot LCM pill. Drilled 8-1/2" hole to 9584'. Mud Type: DISPERSED WT: 9.4 SURVEY MD ANGLE VIS:38 PV:9 DIRE~'TIQN TVD YP: 5 FL: 7.2 SECTION Solids: 8.5 Temp: COORDINATES. oF DL$ BP EXPLORN'ION Daily Drilling Report -- Prudhoe Bay Unit June 29, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 9627' Day: 22 24- Hour Ftg: 43' Current Operation: Circulating mix mud and LCM. Mix mud to 9.3 ppg with 45 #fobl LCM. Plugged bit. POH (losing 2 BPM). Cut MW to 9.1 ppg. RIH with bit (no jets). Bring LCM to 55#fobl (losing 1/2 BPM). Drilled 8-1/2" hole to 9627'. Mud Type: DISPERSED WT: 9.1 SURVEY MD ANGLE VIS: 47 PV: 11 YP: 6 FL: 5.2 Solids: 7.5 Temp: °F .DIRECTION TVD SECTION COORDINATES DLS · BP EXPLOR.~'iON Daily Drilling Report-- Prudhoe Bay Unit June 30, 1989 at 0600 hrs' Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 9809 Day: 23 24- Hour Ftg: 182' Current Operation: Circulate and build volume with LCM. POH to 9-5/8" shoe and repair top drive. Lower MW to 9 ppg and spot LCM pill (100% mud returns). Dh/led 8-1/2" hole to 9809' and started losing mud. Mud Type: NON DISP SURVEY MI) WT: 9.1 VIS: 58 PV: 14 YP: 8 FL: 8.8 Solids: 7 Temp: AN(3LE DIREGrION ,TVD, SECTION COORDINATES 77°F DL$. Daily Drilling Report-- Prudhoe Bay Unit July 5, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Ctn'rent Amount: 0600 Depth: 9809'TD Day: 28 120- Hour Ftg: 0 Current Operation: Laying down drill pipe. RU Halliburton and spot 16 bbl. of Flo-check. @ 9808'. POH. Picked up Baroid MWD and logged from 9125' to 9808'. Ran and cemented 5-1/2" liner with 3 CTC packers. Drilled out cement and float equipment. Tested liner lap to 3000 psi. Displace to 9.0 ppg brine. Mud Type: BRINE SURVEY MD, WT: 9.0 VIS: PV: YP: FL: Solids: Temp: °F AN(~LE DIRE~'IQN TVD SE~FIQN COQRDINATE$ DL$ BP EXFLORKIION Daily Drilling Report-- Prudhoe Bay Unit July 6, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 9809' Day: 29 24- Hour Ftg: 0 Current Operation: Run 3-1/2" robing. Ran logs and perforated from 9552' to 9592'. Mud Type: BRINE SURVEY MD WT: 9.0 VIS: PV: YP: AN(~LE DIRE~'YIQN TVD SECTION Solids: Temp: ~F COORDINATES DL$ BP EXPLORKilON Daily Drilling Report -- Prudhoe Bay Unit July 7, 1989 at 0600 hrs Rig: Audi #2 Well: Z-23 (34-18-11-12) AFE # 120953 API: 50-029-21950 AFE Amount: Current Amount: 0600 Depth: 9809' Day: 30 24- Hour Ftg: 0 Current Operation: Rig move to Z-29. Ran 3-1/2" tubing. ND BOP's. Tested tree to 5000 psi. Displaced 13-3/8" X 9-5/8" annulus with 50 bbls diesel. Released rig 0600 hrs. 7-7-89. Mud Type: SURVEY WT: VIS: PV: YP: FL: ANGLE D1RE~ON TVD SECTION Solids: Temp: °F COORDINATES DL$ Teleco Oilfield Se, J of Alaska Inc. 6116 Nielson Way Anchorage, AK 99502 (907) 562-2646 June 26, 1989 Jos #703 BP EXPLORATION (ALASKA) INC. WELL: Z-23 EILEEN WEST END 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 RECEIVED : ~chorage A ,~Ut? COMPANY TELECO OILFIELD SERVICES SURVEY CALCULATIONS Date 6'25-89 Company: B.P. EXPLORATION Well: Z-23 ST Location: WEST END EILEEN Rig: AUD #2 TELECO Job # 703 Grid Correction: 0.0° Magnetic Declination: 30.3° Total grid correction: 30.3° Proposed Direction: 27.0° 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' TIE IN TO GREAT LAND DIRECTIONAL DRILLING SINGLE SHOT 3510 0 0.3 133.0 3509.74 -1.43 13.33S 23.01E 26.59 S 59.92E 0.00 TELECO MWD SURVEYS 3641 131 2.6 325.6 3640.70 -0.08 11.07S 21.54E 24.22 S 62.79E 2.17 3823 182 5.0 329.5 3822.28 6.16 0.82S 15.17E 15.20 S 86.91E 1.33 3919 96 3.7 330.5 3918.01 10.12 5.49N 11.52E 12.76 N 64.52E 1.37 3981 62 2.7 329.5 3979.91 12.01 8.49N 9.79E 12.96 N 49.08E 1.62 RECEIVED AUG 2 2198-9 Alaska Oil & Gas Cons. Commissl'01i Anchorage PAGE 1 ComDany: B.P. EXPLORATION, Well: Z-23 ST, Location: WEST END EILEEN, Riq: AUD ~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' 4207 226 1.6 289.1 4205.76 14.44 14.11N 4.11E 14.70 N 16.24E 0.80 4484 277 2.0 252.8 4482.63 10.52 13.94N 4.18W 14.55 N 16.71W 0.43 4671 187 1.3 244.4 4669.55 6.55 12.05N 9.23W 15.18 N 37.45W 0.40 4856 185 0.6 251.4 4854.52 4.19 10.84N 12.04W 16.20 N 48.02W 0.38 5044 188 0.9 227.5 5042.51 2.10 9.52N 14.06W 16.98 N 55.89W 0.23 5138 94 0.6 227.5 5136.50 0.95 8.69N 14.97W 17.31 N 59.86W 0.32 5325 187 0.7 250.4 5323.49 -0.80 7.65N 16.77W 18.43 N 65.48W 0.15 5509 184 1.1 236.7 5507.46 -3.15 6.30N 19.30W '20.31 N 71.92W 0.25 5784 275 1.0 234.2 5782.42 -7.60 3.43N 23.47W 23.72 N 81.68W 0.04 5876 92 1.8 1.5 5874.40 -7.02 4.40N 24.09W 24.49 N 79.64W 2.76 5971 95 4.5 15.5 5969.25 -2.02 9.49N 23.06W 24.94 N 67.63W 2.93 6065 94 6.6 22.6 6062.81 6.98 18.03N 20.00W 26.93 N 47.96W 2.35 6159 94 8.4 21.2 6156.00 19.20 29.42N 15.44W 33.22 N 27.69W 1.92 6253 94 10.6 21.2 6248.70 34.63 43.88N 9.83W 44.97 N 12.62W 2.34 PAGE 2 Company: B.P. EXPLORATION,.Well: Z-23 ST, Location: WEST END EILEEN, Riq: AUD #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' 6347 94 12.0 20.5 6340.88 52.95 61.11N 3.28W 61.19 N 3.07W 1.51 6441 94 13.7 23.6 6432.52 73.78 80.47N 4.61E 80.60 N 3.28E 1.94 6505 64 14.9 25.7 6494.53 89.58 94.83N ll.21E 95.49 N 6.74E 2.04 6595 90 15.7 27.5 6581.34 113.32 116.06N 21.85E 118.09 N 10.66E 1.03 6737 142 18.7 29.2 6716.98 155.29 152.98N 41.83E 158.59 N 15.29E 2.14 6814 77 20.7 28.9 6789.47 181.23 175.67N 54.43E 183.91 N 17.22E 2.60 6910 96 23.3 25.7 6878.47 217.17 207.64N 70.87E 219.40 N 18.85E 2.98 7087 177 27.1 20.8 7038.62 292.29 276.90N 100.38E 294.53 N 19.93E 2.45 7208 121 28.7 18.3 7145.55 348.41 330.25N 119.29E 351.14 N 19.86E 1.64 7303 95 30.9 20.8 7227.99 395.21 374.72N 135.12E 398.34 N 19.83E 2.66 7397 94 33.0 21.5 7307.74 444.70 421.11N 153.07E 448.07 N 19.98E 2.28 7491 94 34.8 23.3 7385.76 496.96 469.58N 173.07E 500.46 N 20.23E 2.18 7585 94 36.9 25.0 7461.94 551.94 519.80N 195.61E 555.38 N 20.62E 2.48 PAGE 3 Company: B.P. EXPLORATION,. Well: Z,23 ST, Location: WEST END EILEEN, RiG: AUD #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' 7774 189 38.9 26.4 7611.08 668.00 624.38N 245.99E 671.09 N 21.50E 1.15 7962 188 38.3 28.5 7758.01 785.27 728.46N 300.04E 787.83 N 22.39E 0.77 8151 189 38.2 28.2 7906.43 902.24 831.43N 355.60E 904.29 N 23.16E 0.11 8338 187 38.4 31.0 8053.20 1018.00 932.18N 412.85E 1019.51 N 23.89E 0.94 8620 282 37.7 36.3 8275.32 1190.51 1076.77N 509.05E 1191.04 N 25.30E 1.18 8903 283 39.4 39.8 8496.67 1363.52 1215.54N 617.79E 1363.52 N 26.94E 0.98 9073 170 39.4 42.3 8628.04 1468.19 1296.90N 688.64E 1468.39 N 27.97E 0.93 PAGE 4 · -lO00 3000 TEL~,.O Oilfield Services VERTICAL PROJECTION `1000 2000 3000 4000 5000 4000 5O00 ~6000 n7000 >8000 9OO0 10000 1~000 '12000 3510 ' ,25 Oeg 3823 ' 5,01 deg 4207 ' 1.6 Oeg 4484 ' 2.01 deg 4856 ' .6 deg 5138 ' .6 deg 5509 ' 1.1 deg 5784 ' 1.01 deg 6065 6.6 deg B.P. EXPLORATION Z-23 ST WEST END EILEEN AUD #2 JOB# 703/00 SCALE: ] inch = 1000 feet 6347 ' 12.01 deg -~ 6595 ' 15.7 deg -~6814 ' 20.7 deg -~7087 ' 27.1 deg -]~397 ' 33.01 deg -~74 ' 38.9 deg -~.51 ' 38.2 deg deg VERTICAL SECTION (ft) TEL~_JO 0 i 1 f i e 1 d PLAN VIE~ Service5 1600 B.P. EXPLORATION Z-23 ST WEST END EILEEN AUD #2 + JOB# 703/00 9o73 ' SCALE: + 1 inch = 200 feet, 3 ' /8620 ' / 7962 ' ~ 7sss_, ~ 7491. ' 7397 ' J7303 ' 7208' ~ 6441' '1400 lO00 8OO 600 400 200 2O0 Z O 30 -4 ZE 200 0 200 400 600 800 EAST(ft) lO00 GREAT LAND DIRECTIONAL DRILLING INC. REPORT OF SUB-SURFACE DIRECTIONAL SURVEY BP EXPLORATION # Z-23 WELL NAME WEST EILEEN LOCATION AL689-D24 SINGLE SHOT & MWD 6/26/89 JOB NUMBER TYPE SURVEY DATE DIRECTIONAL ~__~__' TOM DUNN SUPERVISOR NAME T I TLE S I GNATURE 620 FT 9073 FT DEPTH INTERVAL FROM TO 6/05/89 6/25/89 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. RECEIVED AUG 2 21989 Alaska Oil & Gas Cons. Commission Annhnrnn~ GREAT LAND DIRECTIONAL DRILLING,INC Cl~er, t - BP EXPLORATION Well ................ : IdEST EILEEN ff Z-23 Vest,co] Section at.- N 27.00 E nato fJ]e name - B-WZ23D.DAT RECORD OF SURVEY Computation- RADIUS OF CURVATURE Survey date- 8/05/87 Method ..... : SINGLE SHOT & MidD RKB Hetght_- 91.7 ft' MEAS DR I FT TRUVERT SUBSEA SECT ION DEP'I't4 DG MN DEPTH DI:PTH DIST DIRECTION RELATIVE COORDINATES ANGLE FROM WELL-tiEAD 820 1120 1815 2120 2857 0 15 820.00 528.28 0 45 1119.98 1028.24 1 0 1814.92 1523.18 1 0 2119.84 2028.10 1 0 2658.76 2585.02 -1.32 S ~0.00 W -5.38 S 15.00 E -~.35 N 85.00 E -1.75 N 88.00 E -2.28 S 25.00 E 1.0~ S 0.87 id 5.13 S 1_78 W 9.13 S 3.92 E 8.43 S 12.71E 12.91S 20.31E 2953 3510 3823 3917 0 0 2~52.75 2861.01 0 15 3509.74 3418.00 2 3d 3640.69 35h8.95 5 0 3822.28 3730.5h 3 42 39.18.00 382~.2~ -1_10 N 0.00 E -1.43 S 47.00 E 0.82 N 34.40 id 8.84 N 29.50 id 10.88 N 29.50 W 12.51S 22.13 E 13.33 S 23.01 E 11.89 S 24.89 E i.~8 S 18.31E 4.88 N 14.73 E 3981 4207 4484 4871 4858 2 42 3979.90 3888.1~ 1 38 4205.74 41.14.00 2 0 4482_¢0 4390.88 1 18 4669.53 4577.79 0 38 4854.50 4782.76 12.74 N 30. SO 14.51 N 70.90 10.75 S 72.80 8.73 S 64.40 4.41 S 71.40 7.68 N 13.00 E '12.94 N 8.57 E 13.08 N 1.98 W 11.1_'1. N 8.99 W 9.96 N 9.83 W S138 SSO? S784 5876 597'1 0 38 S138.48 S044.74 1 8 5507_44 5415.70 1 0 5782.40 S690.68 1 48 5874.37 S782.63 4 30 5989.22 S877.48 1.¢4 S 47.S0 W -3.04 S 58.70 W -7.47 S S4.20 W -7.44 N 1. SO E -2.51 N 15. SO E 8.47 N 12.36 W S.09 N 16.89 W 2.24 N 20.84 W 3.08 N 22.45 W 8.23 N ~'al.68 W 8085 6 36 8082.77 S97'1.03 61S9 8 24 81SS.96 8084.22 8253 10 38 6248.87 6156.93 8347 12 0 8340.84 6249.10 8441 13 42 8432.48 6340.74 6.49 N 22.60 E 18.71 N 21.20 E 34.15 N 21.20 E S2.48 N 20.S0 E 73.28 N 23.80 E 18.82 N 18.71W 28.20 N 14.14 W 42.67 N 8.53 id S9.88 N 1.97 W 79.25 N 5.88 E CLOSURE DOG LE( DISTANCE DG MN S de, '~0( 1.35 S hO 0 0 W 0.04( S.43 S 19 8 3 W 0..10( 9.93 S 23 15 43 E O.OS: '15.25 S S6 25 44 E 0.00( 24.08 S S7 33 '13 E 0.00~ 25.42 S 60 31 27 E 26.60 S S9 S4 43 E 27.4I S 64 17 30 E 18.39 S 84 49 33 E 15.45 N 72 22 34 E 0,33~ O, 045 1.31.c- 1.3SZ 15.10 N 59 28 9 E lq.SI N 26 56 3 E 13.23 N 8 37 12 W 13.13 N 32 10 13 W 1~.00 N 4h 37 25 1.61.- O. 0 I45 O. :BT~_ 14.98 N SS 33 S8 W 17.45 N 73 I S2 W 20.96 N 83 52 35 W 22.66 N 82 10 44 W 23.19 N 89 12 15 W 0.00] O. 135 O. 03d O. 88C 2. 844 25.1~ N 48 2 SS W 31.55 N 26 37 18 W 43.51 N 11 18 4 W 59.91 N I 53 7 W 79.47 N 4 14 25 E 2.23~ 1.915 2.34C 1.818 WES'F EILEEN ~ Z-.23 6128189 RECORD OF SURVEY MEAS DRIFT TRUVERT SUBSEA SECTION OEPTH DG MN DEPTtt DEPTIt DIST DIRECTION RELATIVE COORDINATES ANGLE FROM WELL-HEAD :[55.80 N 29.20 E 2'!7.77 N 25.70 E 292.93 N 20.80 E 349.07 N 18.30 E 395.88 N 20.80 E 6737 ~B 42 6716.64 6624.90 6910 23 18 6878.11 6786.37 7087 27 6 7038.23 69~6.49 7208 28 42 7145.16 7053.42 7303 R0 54 7227.80 7135.88 153.17 N 42.57 E 208.18 N 71.14 E 277.37 N 100.87 E 330.72 N 119.81E 375_21 N 135.61 E 7397 33 0 7307.35 7215.61 7491 34 48 7385.37 7293_83 7585 36 54 746]..58 7369.82 7774 38 54 7810.89 7518.95 7962 38 18 7757.61 7865.87 445.36 N 21.S0 E 497.61 N 23.30 E 552.59 N 25.00 E 668.65 N 26.40 E 785.93 N 28.50 E 421.60 N 470.08 N B20 09 N 824.90 N 728 98 N 153.58 E 173.53 E 196.06 E 246. ~,0 E 300.46 E 8151 38 12 7906.04 7814.30 902.91 N 28.20 E 831.95 N 8338 38 24 8052.79 7981.05 1018.68 N 31.00 E 932.72 N 8620 37 42 8274.86 8183.12 1191.25 N 36.30 E 1077.35 N 8903 39 24 8496_17 8404.43 1364.32 N 39.80 E 1216.21N 9073 39 24 8627.S4 8535.80 1468.98 N 42.30 E 1297.57 N 358.03 E 413.27 E 509.S4 E 618.23 E 689.08 E CLOSURE DISTANCE DG MN S :1.58.97 N iS 3] S3 E 219.98 N I8 52 0 E 295.14 N 19 59 4 E 351.76 N 19 54 52 E 398.98 N 19 52 17 E 448.69 N 20 0 47 E 501.07 N 20 15 46 E 558.01 N 20 38 SO E 671.72 N 2] 31 10 E 788.47 N 22 24 0 E 904.93 N 23 10 S E 1020.17 N 23 53 SO E 1191.77 N 2S 18 ~4 E 1364.32 N 26 56 43 E 1489.17 N 27 S8 15 E DOG deg/lO~ 1.70~ 2.67! t--- . 2. ~ 01~ o 321 ~.-. 1.09i 0. O. O8: O. O. 0.78( O. 59; WEST EIL.EEN ff Z-23 DATA INTERPOLATED FOR EVEN 100 FEET OF SUBSEA DEPTtt 6126189 MEAS. DEPTFI 192 292 392 TRU VERT SUB SEA MD-TVD VERTICAL DEPTH DEPTtt DIFF. CORRECT 92 0 0 0 I~ 100 0 0 292 200 0 0 392 300 0 0 ~92 ~00 0 0 592 592 500 0 0 692 692 600 0 0 792 792 700 0 0 892 892 800 0 0 992 992 900 0 0 1092 1192 1292 1392 1492 1592 1692 1792 1892 1992 2092 2192 22.6 2392 2492 2592 2892 2792 2892 2992 1092 1000 0 0 1192 1100 0 0 1292 1200 0 0 I392 1300 0 0 1492 1400 0 0 1592 1500 0 0 1892 1600 0 0 1792 1700 0 0 1892 1800 0 0 1992 1900 0 0 2092 2000 0 0 2192 2100 0 0 2292 2200 0 0 2392 2300 0 0 2492 2400 0 0 2592 2500 0 0 2892 2600 0 0 2792 2700 0 0 2892 2800 0 0 2992 2900 0 0 RELATIVE COORDINATES FROM WELL.-ttEAD 0.00 0_00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.62 S 1_00 W 2.z~4 S 1.18 W 3.28 S- 1.36 W z~_08 S 1.54 W 4.90 S 1.73 W 5.71 S 0.95 W 6.52 S 0.20 E 7.33 S 1_35 E fl. 13 S 2.50 E 8.94 S 3_66 E 9.02 S 5.26 E 8.88 S 7_00 E 8.75 S 8.74 E 8.61 S 10.48 E 8 z~7 S 12 o-~ E 9.03 S :13.73 E 9.87 S 15.14 E 10.70 S 18.88 E 11.53 S 17.97 E 12.37 S 19.39 E 12.86 S 20.52 E 12.73 S 21.14 E 12.59 S 21.75 E 12.56 S 22.19 E WES'[ EILEEN N Z-23 DATA INTERPOLATED FOR EVEN 100 FEET OF SUBSEA DEPTH MEAS. TRU VERT SUB SEA MD-TVD VERTZCAL DEPTH DEPTt4 DEPTH DIFF. CORRECT 3092 3192 3292 3392 3492 3592 3692 3792 3893 3993 4093 4293 4393 4593 4693 ~793 ~893 4993 5093 5193 5293 5393 5493 5593 5693 5793 5893 G99~ 3092 3000 0 0 3192 3100 0 0 3292 3200 0 0 3392 3300 0 0 3492 3400 0 0 3592 3500 3892 3800 3792 3700 3892 3800 3992 3900 40.,_ 4000 1 0 4192 4100 I 0 " 4292 4200 1 0 4392 4300 I 0 4492 4400 1 0 4592 4500 I 0 4692 4600 1 0 4792 4700 1 0 4892 4800 1 0 4992 4900 1 0 S092 SO00 1 0 S192 S100 1 0 S292 S200 1 0 S392 S300 1 0 S492 S400 1 O SS92 SSO0 1 0 S892 SSOO ] 0 S792 S700 1 0 S892 S800 I 0 S~p RgO0 o :l. RELATIVE CU_RDINATES FROM WELL-HEAD 12.7i S 22_3S E 12.88 S 22.S1 E 13.. 01 o ~' ,_~_°° .87 E :].3. 118S 22.83 E 13.31 S 22.99 E 12.43 S 24.07 E 9.01 S 22.90 E 3.38 S 19.39 E 2.94 N 1S.71 E 7.95 N 12.88 E 10.28 N 9.82 E 12.81 N 8.97 E 12.98 N 3.92 E 13.03 N 0.83 E 12.98 N 2.23 W 11.93 N 4.91 W 10.98 N 7.33 W 10_3S N 8.87 W 9.76 N 10.16 W 9.24 N 11.08 W 8.71 N 11_98 W 7.97 N 13.00 W 7.08 N 14.17 W 8.1S N 15.34 W 5.24 N 16.51 W 4.22 N i7.97 3.18 N 19.48 2.32 N 21.01 4.03 N 22.31 10.30 N ,_°0.96 WEST EILEEN N Z-23 DATA INTERPOLATED FOR EVEN 100 FEET OF SUBSEA DEPTH 6126189 MEAS. TRU VERT SUB SEA MD-TVD VERTICAL DEP'[H DEPTH DEPTH DIFF. CORRECT 8094 82.~7 '6503 6607 6711 6817 6925 7036 7148 7282 7379 7499 7823 7750 7878 8005 8133 8260 8387 8514 8642 8769 8897 6092 6000 2 0 6192 6100 3 1 6292 6200 5 o 6392 6300 7 2 6492 6400 11 4 8592 6500 15 2+ 6892 8600 19 4 6792 8700 25 6 6892 8800 33 8 6992 6900 44 1~ 7092 7000 56 12 7192 7100 70 14 7292 7200 87 17 7392 7300 107 20 7492 7400 131 24 7592 7500 ~58 27 7692 7600 186 28 7792 7700 213 27 7892 7800 241 28 7992 7900 268 27 8092 8000 295 27 8192 8100 322 27 8292 8200 350 28 8392 8300 377 27 8492 8400 405 28 RELATIVE COORDINATES FROM ~EL..L-HEAD °0 36 N 17 29 W 33.79 N 11.97 W 50.71 N 5.48 W 70.64 N 2.39 E 94.67 N 13.53 E 120.68 N 26.44 E 146.89 N 39.35 E 178.75 N 55.85 E 214.06 N 73.67 E 257.28 N 92.24 E 304.07 N 110.35 E 355.86 N 128.74 E 412.51N 150.04 E 474.28 N 175.42 E 541_46 N 208.24 E 611.61 N 682.32 N 752_ 85 N 822.03 N 890.80 N 240.00 E 278.22 E 313.24 E 350.67 E 389.45 E 958.08 N 1023.22 N 1087.94 N 1150.~8 N 1213.42 N 430.15 E 473. S1 E S17.84 E S88. ~4 E 618. OS E 9027 8592 8500 435 30 1275.40 N 889.77 E WEST EILEEN ~ Z-23 DATA INTERPOLATED FOR EVEN 1000 FEET OF MEASURED DEPTH 8128i8~ MEAS. TRU VERT SUB SEA DEPTH DEPTH DEPTH RELATIVE COORDINATES FROM WELL-HEAD 8000 5998 5906 10.88 N 20.76 W ?000 8960 6868 243.3S N 88.2S E 8000 7787 7695 7h9.68 N 311.64 E ~000 8571 8J~79 ~262.63 N 658.66 E 1000 1000 908 A.1S S 1.56 W 2000 2000 1908 8.60 S 10.62 E 3000 3000 2908 :12.58 S 22.20 E ~000 3999 3907 8.12 N 12.46 E 5000 h998 4906 9.20 N 11.12 W lO00 r ........................................................ i500 ~- ........................................... ~ ...................................... 2000 2500 3sooi T 4000 4500 5000 5500 6000 I 6500 .......... ~-- --- , \ 7000 .............. \ 7500 .................... 8000 8500 9000 -500 VERTICAL SECTION {BP EXPLORATION NEST EIL. EEN # 7_-2_3 SECTION Al' N 2!7.00 E TYD SCALE: 1 inch = tO00 feet DEP SCALE' 1 inch = 1000 feet FJRANN ' 6/26/89 Mar'ken Identtftcatton ND TVD DEPRT B) ll3 9073 86'P1~ i469 / ! o soo ~ooo tsoo aooo ~.soo 3000 .~soo 4000 4~oo sooo ssoo '3epar'tur'e Harker Identification ND TVD DEPRT ~J~ 0 0 0 BP EXPLORATZON ~EST EILEEN # Z-23 CLOSURE: 1469 ft N 28.0 E DECLZNATZON: 30.30 deg E SCALE: 1 inch = 300 feet BRA~N: 6126189 HORIZONTAL VIE~ i950 lBO0 i650 i350 i200 1050 900 75O 600 450 300 /z'ir% ................. I t .......................... i ! 150 0 150 300 450 600 7~0 900 iO~O i200 i3~0 i500 t6~0 I I I II I I II I I II I I I I I II I DIRECTIONAL SURVEY ~UIDANCE [~ONTINUOUS ~-~'~OOL RECEIVED AUG 2 2 ~989 Alaska Oil & Gas Cons. CommisS[OI1 Anchorage Company, .BP E X P L. O. E.,A,T,,I. ,0, N. ........ Well Name z-23,I34-18-].1-12/l,,720', SNL~.3213' W,EL,SE, C ]9,,T. 11N,R12E) Field/Location PRUDH,.OE, BAY~ NORT. H ..SLOPE, A. LA. SKA ,, . Job Reference Nq. Date 73393 5-JUL-89 Lo_~g..~L~y~. Computed B~ WEBER KOHR[NG I I I I[_ II I ! I GCT DIRECTIONAL SURVEY CUSTOMER LISTING FOR ~P EXPLORATION Z-23 (34-18-11-12) PRUDHOE 8AY NO~TH SLOPE, ALASKA SURVEY DATE: 05-JUL-BO ENGINEER: WEBER METHODS OF COMPUTATION TOOL LOCATION: TANGENTIAL- AVERAGED DEVIATION AND AZIMUTH INTERPOLATION: LINEAR VERTICAL SECTION: HORIZ. DIST. PROJECTED ONTO A TARGET AZIMUTH DF NORTH 30 DEG 34 MIN EAST COMPUTATION DATE: 13-JUL-89 PAGE I BP EXPLDEAT[ON Z-23 (3~-18-11-123 PR'UDHOE BAY NORTH SLOPE· ALASKA TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL OEVIATION AZIMUTH DEPTH DEPTH DEPTH OEG MIN DEG MIN DATE OF SURVEY: 05-JUL-89 KELLY BUSHING ELEVATION: 91.74 FT. ENGINEER: WESER . INTERPCLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH . VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 0.00 0.00 -91.74 0 0 N 0 0 E 0.00 0.00 0.00 N 0.00 E 100.00 100.00 8.26 0 21 S 83 54 W -0.08 0.45 0.14 N 0:39 W 200.00 200.00 108.26 0 15 S 36 22 W -0.49 0.00 0.12 S 0.75 W 300.00 300.00 208.26 0 11 S 45 35 W -0.85 0.00 0.40 S 1.00 W 400.00 400.00 308.26 0 18 S 35 57 W -1.27 0.00 0.72 S 1.28 W 500.00 499.99 ¢'08.25 0 19 S 24 4 W -1.85 0.16 1.22 S 1.56 W 600.00 599.99 508.25 0 19 S 14 27 W -2..37 0.01 1.72 S 1.74 W 700.00 699.99 608.25 0 15 S 10 4 E -2.81 O.OO 2.22 S 1.76 W 800.00 799.99 708.25 0 13 S 23 28 E -3.07 0.00 2.60 S 1.65 W 900.00 899.99 808.25 0 12 S 27 29 E -3.28 0.00 2.93 S 1.49 W 1000.00 999.99 908.2:5 1100.00 1099.99 1008.25 1200.00 1199.99 1109.25 1300.00 1299.98 1208.24 1400.00 1399.98 1308.24 1500.00 1499.98 1408.24 1600.00 1599.97 1508.23 1700.00 1699.95 1608.21 1800.00 1799.92 1708.18 1900.00 1899.89 1.808.15 2000.00 1999.88 1908.14 2100.00 2099.86 2008.12 2200.00 21'99.84 2108.10 2300.00 2299.92 2208.08 2400.00 2399.81 2308.07 2500.00 2499.80 2408.06 2600.00 2599.79 2508.05 2700.00 2699.79 2608.05 2800.00 2799.78 2708.04 2900.00 2899.78 2808.04 0 12 S 28 23 E -3.47 0.00 3.24 S 1.33 W 0 9 S 7 3 E -3.66 0.00 3.52 S 1.22 W 0 26 S 14 26 E -4.10 0.00 4.10 S 1.12 W 0 25 S 22 33 E -4.60 0.39 4.82 S 0.89 W 0 17' S 70 21 E -4.74 0.25 5.19 S 0.54 W 0 38 S 84 34 E -4.50 0.83 5.31 S 0.15 E I 3 N 89 34 E -3.76 0.26 5.33 S 1.63 E I 20 N 86 15 E -2.61 0.00 5.25 S 3.75 E I 21 N 83 25 E -1.lB 0.00 5.00 S 6.15 E I 8 N 80 33 E 0.17 0.13 4.69 S 8.28 E I 8 N 77 29 E 1.46 0.00 4.34 S 10.21 E I 9 N 77 39 E 2.84 0.36 3.88 S 12.16 E I 6 N 84 43 E 4.07 0.00 3.59 S 14.08 E 0 57 N 89 2 E 5.10 0.58 3.49 5 15.95 E 0 40 S 70 41 E 5.65 0.91 3.63 S 17.26 E 0 43 S ,59 44 E 5.95 0.00 3.98 S 18.45 E 0 37 S 60 5 E 6.08 0.15 4.47 S 19.53 E 0 46 S 49 2.3 E 5.98 0.46 5.10 S 20.40 E 0 30 S 34 22 E 5.71 0.27 5.88 S 21.19 E 0 24 S 13 I E 5.24 0.24 6.63 S 21.54 E 0 24 S 2 21 E 4.64 0.24 7.37 S 21.61 E 0 1,3 S 9 3 W 4.10 0.10 7.97 S 21.57 E 0 16 S 18 7 W 3.66 0.64 8.42 S 21.46 E 0 11 S 6 54 W 3.27 0.00 8.84 S 21.41 E 0 11 S 14 43 E 2.99 0.28 9.15 S 21.36 E 0 18 S 25 56 E 2.72 0.09 9.51 S 21.45 E I 16 N 14 3 W 2.99 4.51 9.21 S 21.49 E 4 5 N 29 27 W 5.78 2.37 4.69 S 19.30 E 5 2 N 33 15 W 9.66 0.08 2.38 N 14.99 E 4 1¢ N 31 9 W 13.42 2.83 9.40 N 10.48 E 3000.00 2999.78 2908.04 3100.00 3099.77 3008.03 3200.00 3199.77 3108.03 3300.00 3299.77 3208.03 3400.00 3399.77 3308.03 3500.00 3499.77 3¢08.03 3600.00 3599.77 3508.03 3700.00 3699.63 3607.89 3800.00 3799.29 3707.55 3900.00 3898.94 3307.20 0.00 N 0 0 E 0.42 N 69 4,9 W 0.76 S 80 50 W 1.07 S 68 18 1' 1.47 S 60 38 ~ 1.98 S 51 56 W 2.45 S 45 13 W 2.84 S 38 24 W 3.08 S 32 20 W 3.29 S 26 56 W 3.50 S 22 14 W 3.73 S 19 9 W 4.25 S 15 19 W 4.90 S 10 25 W 5.21 S 5 57 W 5.31 S I 36 E 5.58 S 17 0 E 6.45 S 35 34 E 7.92 S 50 53 E 9.52 S 60 2'9 E 11.09 S 66 59 E 12.77 S 72 17 E 14.53 S 75 42 E 16.33 S 77 39 E 17.64 S 78 8 .r ~ 18.88 S 77 49 E ' 20.03 S 77 7 E 21.03 S 75 58 E ZI.99 S 74 29 E 22.53 S 72 53 E 22.83 S 71 10 E 23.00 S 69 43 E 23.05 S 68 35 E ;73.17 S 67' 34 E 23.2¢ S 66 49 E 23.46 S 66 5 E 23.38 S 66 47 E 19.86 S 76 21 E 15.17 N 80 59 E 14.07 N 48 7 E COMPUTATION DATE: 13-JUL-89 PAGE 2 BP EXPLORATION Z-23 (34-18-11-12) PRUDHOE BAY NORTH SLOPE, ALASKA DATE OF SURVEY: 05-JUL-89 KELLY BUSHING ELEVATION: 91.74 FT ENGINEER= WEBER INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE NEASURED VERTICAL VERTICAL DEVIA'TION AZIHUTH DEPTH DEPTH DEPTH DEG #IN DEG M[N 4000.00 3998.78 3907.06 4100.00 4098.72 4006.98 4200.00 4198.68 4106.94 4300.00 4298.63 4206.89 4400.00 4398.56 6306.82 4500.00 4498.49 4'406.75 4600.00 4598.46 4506.72 4700.00 ~698.43 4606.69 4800.00 4798.42 4706.68 4900.00 4898.42 4806.68 222 N 32 214 I 44 N 37 3 !4 I 35 N 6] 40 W I 53 S 8843 W 2 18 S 78 45 W I 41 S 73 57 W 126 S 75 014 I 6 S 77 58 N 0 44 S 78 22 W 0 33 S 73 34 W 5000.00 4~998.41 4906.67 5100.00 5098.41 5006.67 5200.00 5198.60 5106.66 5300.00 5298.40 5206.66 5400.00 5398.39 5306.65 5500.00 5498.38 5406.64 5600.00 5598.37 5506.63 5700.00 5698.35 5606.61 5800.00 5798.34 5706.60 5900.00 5898.33 5806.59 0 36 S 58 59 14 0 30 S 60 14 W 0 3O S 58 3;' N 0 27 S 69 17 14 0 41 S 60 14 14 0 58 S 56 50 W I 5 S 55 10 W 0 50 S 54 29 W 0 40 S 57 41 W 2 9 N 2 37. W 6000.00 5998.07 5906.33 5 10 6100.00 6097.47 6005.73 7 18 6200.00 6196.44 6104.70 9 22 6300.00 6294.79 6203.05 11 16 6400.00 6392.54 6300.80 13 1 6500.00 6489.59 6397.85 14 51 6600.00 65,~5.92 6494.18 16 15 6700.00 6681.48 6589.74 18 7 6800.00 6775.87 6684.13 20 29 6900.00 6868.76 6777.02 22 52 7000.00 6960.19 6868.45 25 1 7100.00 7049.88 6958.14 27 18 7200.00 7138.07 7046.33 28 58 7300.00 7224.64 7132.90 31 6 7400.00 7309.31 7217.57 33 9 7500.00 7392.01 7300.27 35 16 7600.00 7672.61 7380.87 37 25 7700.00 7551.06 7459.32 38 53 7800.00 7628.82 7537.08 38 57 7900.00 7706.80 7615.06 38 34 N ZO 20 E N 24 6 E N 21 31 E N 20 0 E N 21 0 E N 24 59 E N 26 58 E N 28 27 E N 28 4:8 E N 26 17 E VERTICAL DOGLEG REC'TANGUL~R COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/NEST DIST. AZIMUTH FEET OEG/100 FEET FEET FEET DEG MIN 16.08 1.42 14.19 N 7.60 E 17.61 0.53 17.10 N 5.69 E 18.31 1.35 19.03 N 3.78 E 17.26 0.91 19.58 N 0.78 E 14.97 0.41 19.13 N 2.97 W 12.38 0.42 18.20 N 6.47 W 10.44 0.44 17.49 N 9.09 W 8.90 0.57 16.94 N 11.17 W 7.99 0.52 16.73 N 12.63 W 7.15 0.07 16.37 N 13.66 W 6.25 0.32 15.89 N 14.62 W 5.41 0.00 15.41 N 15.48 W 6.67 0.24 15.02 N 16.25 W 4.02 0.00 14.70 N 16.99 W 3.03 0.00 14.14 N 17.99 W 1.90 0.54 13.49 N 19.12 W 0.27 0.00 12.49 N 20.62 W -1.38 0.12 11.43 N 22.08 W -2.64 0.67 10.65 N 23.23 W -2.15 5.52 11.56 N 23.81 W 4.53 1.52 18.36 N 15.31 2.12 28.46 N 29.43 2.78 41.63 N 47.25 1.25 58.55 N 67.96 1.96 78.31 N 91.85 1.70 100.47 N 118.57 1.56 124.55 N 147.99 2.24 150.61 N 180.98 2.57 179.54 N 217.92 2.75 212.27 N N 22 24 E 258.15 2.99 N 19 35 E 301.71 2.13 N 18 37 E 347.88 1.92 N 20 11 E 396.96 2.36 N 21 53 E 449.41 2.10 N 23 15 E 505.09 2.20 N 24 57 E 563.87 2.48 N 26 31 E 625.67 0.76 N 27 12 E 688.41 0.42 N 27 25 E 750.91 0.59 16.10 N 28 10 E 18.02 N 18 24 E 19.40 N 11 15 E 19.60 N 2 18 E 19.36 N 8 49 W 19.32 N 19 35 19.71 N 27 28 W 20.29 N 33 25 W 20.96 N 37 3 21.32 N 39 50 W 21.59 N 42 38 W 21.84 N 45 7 W 22.13 N 47 15 W 22.47 N 49 9 W 22.88 N 51 50 W 23.60 N 54 47 W 24.10 N 58 48 W 24.86 N 62 38 W 25.55 N 65 23 W 26.47 N 64 6 W 22.17 W 28.78 N 50 23 W 18.09 W 33.72 N 32 27 W 12.62 W 43.50 N 16 52 W 6.24. W 58.89 N 6 5 W 1.04 E 78.31 N 0 46 E 10.48 E 101.02 N 5 57 E 22.27 E 126.53 N 10 8 E 35.98 E 154.85 N 13 26 E 51.88 E 186.88 N 16 7 E 69.11 E 223.23 N 18 2 E 249.20 N 85.70 E 263.52 N 18 59 E 290.47 N 101.46 E 307.68 N 19 15 E 335.10 N 116.69 E 354.83 N 19 12 E 382.30 N 133.28 E 404.87 N 19 13 E 431.94 N 152.37 E 458.02 N 19 26 E 483.83 N 173.99 E 514.16 N 19 47 E 537.89 N 198.05 E 573.19 N 20 13 E 593.69 N 225.09 E 634.92 N 20 46 E 669.76 N 253.53 E 697.47 N 21 19 E 705.39 N 282.23 E 759.76 N 21 48 E COMPUTATION DATE: 13-JUL-B9 PAGE 3 BP EXPLORATION Z-23 C34-18-11-12) PRUDHOE BAY NORTH SLOPEr ALASKA DATE OF SURVEY: 05-JUL-89 KELLY BUSHING ELEVATION: 91.74 FT . ENGINEER: WEBER INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE qEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH OEG #IN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. OEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG HIN 8000.00 7785.16 7693.42 38 17 8100.00 7863.63 7771.89 38 24 8200.00 7941.93 7850.19 38 34 8300.00 8020.05 7928.31 38 36 8400.00 8098.48 8006.74 38 1 8500.00 817T.57 8085.83 37 33 a600.O0 8256.81 8165.07 37 43 8700.00 8335.55 8243.81 38 27 8800.00 8413.20 8321.46 39 35 8900.00 8490.06 8398-32 39 21 N Z7 56 E 812.97 N 28 13 E 874.90 N 28 47 E 937.06 N 30 15 E 999.46 N 32 17 E 1061.50 N 34 2Z E 1122..62 N 35 26 E 1183.43 N 36 26 E 1244.81 N 37 18 E 1307.43 N 38 31 E 1370.87 0.16 0.20 0.7¢ 1.22 1.60 1.02 0.74 1.24 1.95 0,98 760.¢0 N 311.12 E 821.59 N 22 15 E 815.09 N 340.30 E 883.28 N 22 40 E 869.78 N 369.94 E 945.18 N 23 2 E 924.15 N 400.59 E 1007.24 N 23 26 E ~ 977.17 N 432.81 E 1068.73 N 23 53 E 1028.29 N 466.45 E 1129.14 N 24 24 E 1078.29 N 501.38 E 1189.15 N 24 56 E 1128.20 N 537.56 E 1249.72 N 25 29 E 1178.59 N 575.38 E 1311.54 N 26 '1 E 1229.07 N 614.68 E 1374.20 N 26 34 E 9000.00 8567.29 8475.55 39 31 9100.00 8644.49 8552.75 39 30 9200.00 B7Z1.41 8629.67 39 54 9300.00 8798.11 8706.37 39 58 9400.00 8874.48 8782.74 40 27 9500.00 8950.54 8858.80 40 23 9600.00 9026.95 8935.21 40 1 9700°00 9103.31 9011.57 40 35 9800.00 9179.14 9087.40 40 41 9809.00 9185.96 9094.?.2 40 41 N 40 26 E 1433.64 N ¢2 24 E 1496.04 N 42 39 E 1558.54 N 42 39 E 1621.26 N 42 7 E 1684.45 N 41 7 E 1748.15 N 39 50 E 1811.70 N 39 12 E 1875.50 N 39 11 E 1939.94 N 39 11 E 1945.74 1.44 0.88 0.31 0.52 0.51 1.19 1.21 9.43 0.00 0.00 1278.13 N 655.03 E 1436.21 N 27 8 E 1325.76 N 697.11 E 1497.86 N 27 44 E 1372.78 N 740.39 E 1559.71 N 28 20 E 1419.92 N 783.91 E 1621.94 N 28 54 E 1467.61 N 827.42 E 1684.79 N 29 25 E 1516.09 N 870.60 E 1748.28 N 29 52 E 1565.20 N 912.43 E 1811.73 N 30 14 E 1615.04 N 953.49 E 1875.50 N 30 33 E 1665.58 N 99~.63 E 1939.96 N 30 51 E 1670.13 N 998.34 E 1945.77 N 30 52 E COHPUTAT[ON DATE; 13-JUL-89 PAGE EP EXPLORATION Z-23 C34-18-11-12) PRUDHOE B~¥ NORTH SLOPE. ALASKA DATE OF SURVEY: OS-JUL-89 KELLY BUSHING ELEVATION: 91.74 FT ENGINEER: WEBER INTERPOLATED VALUES FOR EVEN 1000 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG #IN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECT[ON SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 0o00 0.00 ~91.74 0 0 1000.00 999.99 908.25 0 12 2000.00 1999.88 1908.14 I 8 3000.00 2999.78 2908.04 0 24 4000°00 3998.78 3907.04 2 22 5000°00 ¢998.4! 4906.67 0 36 6000.00 5998°07 5906.33 5 10 7000.00 6960.19 6868°45 25 1 8000.00 7785.[6 7693°42 38 17 9000.00 8567.29 8&75.55 39 31 N 0 0 E S 28 23 E N 77 29 E S 2 21 E N 32 2 W S 58 $9 W N 20 20 E N 22 24 E N 27 56 E 0.00 0o00 0.00 N -3.47 0.00 3.24 S 1.46 0.00 4.34 S 4.64 0.24 7.37 S 16.08 1.42 14.19 N 6.25 0.32 15.89 N 4.53 1°52 18.36 N ZSa.15 2.99 2~9.20 N 812.97 0.16 N 40 26 E 1433°64 0.00 E 0.00 N 0 0 E 1.33 W 3.50 S 22 14 W 10.21 E 11.09 S 66 59 E 21.61 E 22.83 S 71 10 E \ 7.60 E 16.10 N 28 10 E , 14.62 W 21.59 N 42 38 W 22.17 W 28.7B N 50 23 W 85.70 E 263.52 N 10 59 E 760.40 N 311.12 E 821.59 N 22 15. E 1278.13 N 655.03 E 1436.21 N 27 8 E 9809°00 9185.96 9094.22 40 41 N 39 11 E 1945.74 0.00 1670,,,13 N 998.34 E 1945.77 N 30 52 E · COMPUTATION DATE: 13-JUL-89 PAGE 5 BP EXPLORATION Z-23 (34-18-11-12) PRUDHOE BAY NORTH SLOPE~ ALASKA TRUE SUB-SEA COURSE 4EASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH OEPTH DEG MIN DEG DATE OF SURVEY: 05-JUL-B9 KELLY BUSHING 'ELEVATION: 91.74 FT ENGINEER: WEBER INTERPOLATED VALUES FOR EVEN 100 FEET OF SU~-SEA DEPTH VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 0.00 0.00 -91.74 0 0 N 0 0 E 0.00 0.00 0.00 N 0.00 E 91.74 91.74 0.00 0 22 N 89 50 W -0.05 0.50 0.15 N 0.34 W 191.74 191.74 100.00 0 15 S 36 28 W -0.45 0.00 0.09 S 0.73 W 291.74 291.74 ZO0.O0 0 11 S 45 40 W -0.82 0.00 0.38. S 0.98 W 391.74 391.74 300.00 0 18 S 36 53 W -1.23 0.00 0.69 S 1.26 W 491.75 491.74 400.00 0 20 S 25 Z W -1.80 0.03 1.18 S 1.54 W 591.75 591.74 500.00 0 19 S 15 21 W -2.32 0.00 1.68 S 1.72 W 691.75 691.74 600.00 0 15 S B 44 E -2.78 0.00 2.19 S 1.77 W 791.75 791.74 700.00 0 13 S 23 22 E -3.06 0.00 2.57 S 1.66 W 891.75 891.74 8'00.00 0 12 S 26 45 E -3.27 0.00 2.90 S 1.50 W 991.75 991.74 900.00 1091.75 1091.74 1000.00 1191.75 1191.74 1100.00 1291.76 1291.74 1,200.00 1391.76 1391.74 1300.00 1491.76 1491.74 1400.00 1591.77 1591.74 1500.00 1691.79 1691.74 1600.00 1791.82 1791.74 1700.00 1891.84 1891.74 1800.00 1991.86 1991.74 1900.00 2091.88 2091.74 2000.00 2.191.90 2191.74 2100.00 2291.92 2291.74 2200.00 2391.93 2391.74 2300.00 2491.94 2491.74 2400.00 2591.94 2591.74 2500.00 2691.95 2691.74 2600.00 2791.96 2791.74 2700.00 2891.96 2891.74 2800.00 0 11 S 27 49 E -3.45 0.00 3.22 S 1.34 W 0 9 S 7 58 E -3.64 0.00 3.50 S 1.23 W 0 25 S 13 44 E -4.06 0.00 4.04 S 1.14 W 0 26 S 21 16 E -4.57 0.47 4.77 S 0.91 W 0 16 S 57 21 E -4.75 0.02 5.17 S O.5B W 0 34 S 83 37 E -4.53 0.74 5.30 S 0.06 E I I N 89 41 E -3.84 0.42 5.34 S 1.48 E I 20 N 86 49 E -2.72 0.00 5.26 S 3.56 E I 22 N 83 27 E -1.30 0.00 5.02 S 5.96 E I B N 80 27 ~ 0.07 0.04 4.72 S 8.12 E 1 B N 78 6 E 1.35 0.00 4.37 S 10.05 E 1 11 N 77 57 E 2.73 0.35 3.92 S 12.00 E I 5 N 84 15 E 3.98 0.00 3.60 S 13.92 E I 0 N 88 44 F. 5.03 0.57 3.49 S 15.81 E 0 38 S 71 55 E 5.63 0.74 3.60 S 17.17 E 0 43 S 70 32 E 5.93 0.04 3.95 S 19.36 E 0 37 S 61 19 E 6.08 0.17 4.42 S 19.45 E 0 44 S 49 33 E 6.00 0.58 5.03 S 20.32 E 0 31 S 36 17 E 5.74 0.29 5.82 S 21.15 E 0 25 S 14 47 E 5.28 0.21 6.57 S 21.52 E 0 27 S 4 54 E 4.69 0.77 7.31 S 21.60 0 20 S 7 15 W 4.14 0.24 7.93 S 21.58 0 15 S 19 43 W 3.70 0.46 8.38 S 21.47 0 11 S 5 23 W 3.30 0.00 8.82 S 21.42 0 12 S 10 1Z E 3.00 0.46 9.12 S 21.36 0 19 S 24 I E 2.74 0.10 9.47 S 21.43 0 56 N 11 3 W 2. BB 3.74 9.36 S 21.52 3 54 N 29 6 W 5.50 2.80 5.18 S 19.58 5 2 N 33 5 W 9.37 0.19 1.82 N 15.35 4 24 N 31 42 W 13.16 2.35 8.93 N 10.76 2991.96 2991.74 2900.00 3091.97 3091.74 3000.00 3191.97 3191.74 3100.00 3291.97 3291.74 3200.00 3391.97 3391.74 3300.00 3491.97 3491.74 3400.00 3591.97 3591.74 3500.00 3692.09 3691.74 3600.00 3792.42 3791.74 3700.00 3892.78 3891.74 3800.00 0.00 N 0 0 E 0.37 N 66 43 W 0.74 S 82 48 W 1.05 S 68 51 W 1.43 S 61 21 W 1.94 S 52 34 W 2.41 S 45 46 W 2.81 S 38 56 W 3.06 S 32 49 W 3.27 S 27 21 W 3.49 S 22 35 W 3.71 S 19 17 W 4.20 $ 15 43 W 4.85 S 10 48 W 5.20 S 6 22 W 5.30 S 0 42 E 5.54 S 15 33 E 6.36 S 34 7 E 7.79 S 49 52 E 9.39 S 59 51 E 10.96 S 66 30 E 12.62 S 71 55 E 14.38 S 75 29 E 16.19 S 77 32 E 17.55 S 78 10 E 18.78 S 77 52 E 19.95 S 77 11 E 20.94 S 76 5 E 21.94 S 74 36 E 22.50 S 73 I E 22.80 S 71 19 E 22.99 S 69 49 E 23.05 S 68 40 E 23.16 S 67 37 E 23.22 S 66 52 E 23.43 $ 66 9 E 23.47 S 66 29 E 20.25 S 75 11 E 15.45 N 83 14 E 13.98 N 50 20 E COMPUTATION DATE: 13-JUL-89 PAGE 6 8P EXPLORATION Z-23 C34- 18-11-12) PRUDHOE 8AY NORTH SLOPE~ ALASKA DATE OF SURVEY: 05-JUL-89 KELLY B.USH[NG ELEVATION: 91.74 FT ENGINEER: WEBER INTERPOLATED VALUES FOR EVEN 100 FEET QF SUB-SEA DEPTH TRUE SUB-SEA COURSE IEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH OEG MIN DEG 3992.96 3991.74 3900.00 4093.02 4091.74 4000.00 4193.06 ,4191.74 4,.100.00 4293.10 4291.74 ¢ZO0. O0 4393.17 4391.74 4300.00 4493.24 4491.74 4400.00 4593.28 4591.74 4500.00 4693.31 4691.74 4600.00 4793.32 4791.74 4700.00 4893.32 4891.74 4800.00 228 N 32 I W I 46 N 36 21 W I 33 N 59 26 W I 50 S 90 0 W 2 19 S 79 28 W I 43 S 74 4 W I 26 S 75 16 W I 6 S 77 44 W 0 44 S 8O 47 W 0 33 S 72 9 W 4993.33 4991.74 4900.00 5093.33 5091.74 5000.00 5193.34 5191.74 5100.00 5293.34 5291.74 5200.00 5393.35 5391.74 5300.00 5493.35 5491.74 5400.00 5593.37 5591.74 5500.00 5693.39 5691.74 5600.00 5793.40 5791.74 5700.00 5893.41 5891.74 5800.00 0 37 S 58 48 W 0 31 S 60 9 W 0 31 S 56 11 W 0 27 S 69 18 W 0 40 S 60 6 W 0 56 S 57 5 W I 4 S 55 15 W 0 51 S 54 41 W 0 4?. S 57 14 W 151 N 5 24 W 5993.65 5991.74 5900.00 5 6094.23 6091.74 6000.00 7 12 6195.24 6191.74 6100.00 9 14 6296.90 6291.74 6700.00 11 1.3 6399.18 6391.74 6300.00 13 0 6502.23 6491.74 6400.00 14 53 6606.06 6591.74 6500.00 16 21 6710.81 6691.74 6600.00 18 21 6816.96 6791.74 6700.00 20 55 6924.97 6891.74 6800.00 23 22 7034.96 6991.74 6900.00 25 55 7147.28 7091.74 7000. O0 28 6 7261.75 7191.74 7100.00 30 16 7379.07 7291.74 7200.00 32 44 7499.67 7391.74 7300.00 35 15 7624.21 7491.74 7400.00 37 55 7752.30 7591.74 7500.00 39 0 7880.73 7691.74 7600.00 38 38 8008.38 7791.74 7700.00 38 16 8135.88 7891.74 7800.00 38 25 N 20 4 E N 24 7 E N 21 36 E N 20 2 E N 20 59 E N 25 2 E N 27 3 E N 28 35 E N 28 37 E N 25 gE VERTICAL DOGLEG RECTANGULAR COORO:NATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 15.95 1.60 13.94 N 7.75 E 17.53 0.55 16.93 N 5.81 E 18.31 1.67 18.93 N 3.95 E 17.38 0.85 19.58 N 1.01 E 15.15 0.39 19.19 N 2.70 W 12.52 0.48 18.25 N 6.28 W 10.55 0.38 17.53 N 8.94 W 8.99 0.60 16.97 N 11.05 W 8.04 0.54 16.74 N 12.54 W 7.20 0.25 16.39 N 13.59 W 6.31 0.23 15.92 N 14.56 W 5.46 0.00 15.44 N 15.42 W 4.72 0.01 15.05 N 16.20 W 4.06 0.00 14.7Z N 16.95 W 3.10 0.00 14.18 N 17.92 W 2.00 0.61 13.55 N 19.02 W 0.38 0.00 12.56 N 20.52 W -1.29 0.44 11.49 N 22.00 W -2.57 0.52 10.69 N 23.16 W -2.33 4.80 11.35 N 23.80 W 15.95 N 29 5 E 17.90 N 18 57 E 19.34 N 11 46 E 19.61 N 2 57 E ~, 19.38 N 8 0 W 19.31 N 19 0 W 19.68 N 27 0 W 20.25 N 33 5 W 20.92 N 36 50 W 21.29 N 39 40 W 3.98 1.59 17.83 N 14.59 1.98 27.80 N 28.67 2.92 40.91 N 46.66 1.29 57.99 N 67.78 1.93 78.14 N 92.42 1.68 100.99 N 120.25 1.59 126.05 N 151.39 2.27 153.60 It 186.96 2.60 184.79 N 227.67 2.53 221.07 N 21.58 N 42 27 W 21.83 N 44 58 W 22.11 N 47 6 W 22.44 N 49 I W 22.85 N 51 39 W 23.36 N 54 32 W 24.05 N 58 32 W 24.82 N 62 25 W 25.51 N 65 13 W 26.36 N 64 30 W N 21 21 E 273.02 2.81 N 18 42 E 323.26 1.71 N 19 29 E 377.79 2.41 N 21 33 E 438.19 2.15 N 23 14 E 50¢.90 2.20 N 25 26 E 578.65 2.41 N 26 57 E 658.47 0.40 N 27 19 E 738.91 0 · 62 N 27 58 E 818.15 0.22 N 28 20 E 897.17 0.24 22.36 W 28.60 N 51 2.6 W 18.39 W 33.33 N 33 29 W 12.90 W 42.90 N 17 30 W 6.44 W 58.35 N 6 20 W 0.97 E 78.14 N 0 43 E 10.73 E 101.56 N 6 4 E 23.03 E 128.14 N 10 21 E 37.61 E 1.58.14 N 13 45 E 54.75 E 192.73 N 16 30 E 73.37 E 232.93 N 18 22 E 263.16 N 91.29 E 278.55 N 19 8 E 311.25 N 108.66 E 329.67 N 19 15 E 363.95 N 126.66 E 385.36 N 19 11 E 421.38 N 148.18 E 4~6.57 N 19 22 E 483.66 N 173.92 E 513.98 N 19 47 E 551.30 N 204.40 E 587.98 N 20 21 E 623.05 N 239.88 E 667.63 N 21 3 E 694.72 N 276.70 E 747.80 N 21 43 E 764.99 N 313.55 E 826.75 N 22 17 E 834.72 N 350.87 E 905.46 N 22 48 E C. OHP'UTATION DATE: 13-JUL-89 PAGE 7 BP EXPLORATION Z-23 (34-18-11-12) PRUOHOE BAY NORTH SLOPEr ALASKA DATE OF SURVEY: OS-JUL-89 KELLY BUSHING ELEVATION: 91.74 FT ENGINEER: WEBER INTERPOLATED VALUES FOR EVEN 100 FEET DF SUB-SEA DEPTH TRUE SUB-SEA COURSE 4EASURED VERTZCAL VERTZCAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH OEG MIN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET ~EET DEG MIN 8263,76 7991.74 7900.00 38 39 8391.44 80'91.76 8000.00 38 5 8517.87 8191.74 8100o00 37 32 8644.23 8291.74 8200.00 38 0 8772.20 8391.74 8300.00 39 20 8902.17 ~491.74 8400.00 39 20 9031.68 8591.74 8500.00 39 26 9161.35 8691.74 8600.00 39 49 9291.69 8791.74 8700.00 39 57 9422.69 B891.74 8800.00 40 31 N 29 36 E 976.84 N 32 6 E 1056.22 N 34 3'7 E 1133.48 N 35 52 E 1210.46 N 37 6 E 1289.88 N 38 31 E 1372.24 N 41 7 E 1453.47 N 42 41 E 1534.32 N 42 41 E 1616.04 N 41 58 E 1698.89 1.05 1.55 O.TO 1.12 1.42 0.96 1.38 0.66 0.43 0.5Z 904.54 N 389.32 E 984.76 N 23 17 E 972.70 N 430.00 E 1063.51 N 23 51 E 1037.26 N 472.62 E 1139.86 N 24 30 E 1100.34 N 517.19 E 1215.83 N 25 10 E ~ 1164.52 N 564.70 E 1294.22 N 25 52 E 1230.15 N 615.54 E 1375.55 N 26 35 E 1293.39 N 668.19 E 1455.79 N 27 19 E 1354.57 N 723.60 E 1535.72 N 28 7 E 1416.00 N 780.29 E 1616.76 N 28 51 E 1478.55 N B37.29 E 1699.17 N 29 31 E 9553.99 8991.74 8900.00 40 9 9684.82 9091.74 9000.00 40 11 9809..00 9185.96 9094.22 40 41 N 40 22 E 1782.49 N 39 18 E 1865.78 N 39 11 E 1945.74 0.96 1.85 0.00 1542.54 N 893.36 E 1782.56 N 30 5 E 1607.43 N 947.27 E 1865.78 N 30 31 E 1670.13 N 998.34 E 1945.77 N 30 52 E SCHLUMBERGER D I RECT I ONRL SURVEY COMPANY BP EXPLORAT I ON WELL Z-23 (34-18-11-12) FI ELD PRUDHOE BAY COUNTRY USA RUN ONE DATE LOOOED OS - JUL - 89 REFERENCE 733SS -L' 20' Z-2~ SNL, (34'- 18- 11-12) 3213" WEL, SEC 19, 'T11N, R12E) HORIZONTAL PROJECTION NORTH 2000 2S00. ~000 1500 1000 500 -~00 SOUTH -~ ! 000 - ! 500 HEST REF ?BBSS SCALE : l/SO0 IN/FT ~...~..~...i..,~...~...;...~..4 ...... ~....~..4-~...~...~..4...i...~ ........ ~--.~-.4...;.-.~-..~-~..4....~ ....... ~...~..4..4-.L--~.-.~..4.,.~ ...... ~...~..4...~.-.i..4..4....~...i ....... ~..~ ~. i ~ ~ ~ ~ ...... ~ ...~ i ~. i ~. ~ ~ . ~ : '"H'"H"i'"'?'"H'"'~ ........ 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L.~..L..~:::: ...... ~...;...~...~::: ~ ......... : ~.4...~-'...~-~...;~ ...... -H--*%~-~+%+.t---t ...... ~-+.-t--+--*.--*---t--+-+--t--+%---H-H-?H-H-H-~ ....... ~---H-H.H-?H.H.%-~ ....... .... f"f"f"h'-'f'f"f"~ ...... H'-f"f"f"f"f"H ...... ~t-~hn~f?-~'--~---t'--?--~---'~---f'i--~-"f'i"'~ ....... f"f'"?'t"??"? ...... 7~""~'"'?'?'"~'"?'"?"'~ ...... 3OO0 31.' PROJECTION ON VERTICAL PLANE 31, - 211. SCALED IN VERTICAL DEPTHS HORIZ SCALE = I/SO0 IN/FT BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5nl To ARCO EXXON PEILLIPS STATE OF ALASKA Date: 24-JUL-89 T~: 80200 SYSTEM Tape & Transmittal Only ARCHIVES BP MAGNETIC LIS TAPE & LISTING , , The following material is being submitted herewith. Please acknowledge receipt by signing a copy of this letter and returning it to this office: W-09 OH/MWD 24-JUN-89 91 14635-15432 SPERRY%89-06-09AK 1600bpi API%50-029-21947 Z-23 OH/MWD il-JUL-89 %~ 9125-9808 SPERRY%89-06-11 1600bpi API%50-029-21950 Tape Pos.#06537 Tape Pos.%06538 Received: Date: Information control Well Records LR2-1 J. Dietz/S. McCurry BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO, Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO HOUSTON ARCO CHEVRON EXXON MOB I L PHILLIPS STATE OF ALASKA GEOSCIENCES RES ERVO IR ARCHIVES Date: 07/17/89 T#: 80171 BP CASED HOLE FINAL LOGS The following material is being suDmitted herewith. Please acknowledge receipt by signing a copy of this letter and returning it to this office: D-21 Perf-R 07/05/89 E-05 Prod-F 06/29/89 E-16 Prod-F 06/30/89 F-09 TMD 07/04/89 GC-iE Completion 07/06/89 M-29 Perf-R 07/09/89 R-16 PFC 07/06/89 X-0~ Inj 07/02/89 Z-21 Prod-F 06/27/89 Z-23 CET 07/05/89 Z-23 Perf-R 07/05/89 Z-23 CBT 07/05/89 'Z-32 PITS 06/30/89 A-03 CCL 07/01/89 91 9900-11204 Sch 5" #1 9700-10053 Camco 5" 91 8700-9340 Camco ~1 9400-10050 HLS 5" ~1 4650-5650 Scb 5" ~1 9560-9970 Scb #1 11150-11406 Atlas 5" ~1 11900-12650 Camco #1 10850-11359 Camco 5" ~1 8872-9748 Scb 5" #1 9552-9592 Sch 5" ~1 8872-9748 Scb 5" #1 10900-11270 Camco 5" ~1 9200-12008 Camco Received: Date: Information Control Well Records LR2-1 J. Dietz/S. McCurry BP EXPLORATION July 19, 1989 C. V. Chatterton, Chairman Oil and Gas Conservation Commission State of Alaska 3001 Porcupine Drive Anchorage, Ak. 99501 Dear Mr. Chatterton: BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 · ' ~'~ '""i ~'"'"'" . . BP Exploration is requesting administrative approval, as outlined on Conservation Order No. 213, Rule 2, to waive productivity profile requirements for two new wells. A waiver is requested for the following wells perforated in one single interval: Z-23 (31' TVD), Z-26 (21.' TVD). In these cases, the value of obtaining a production profile would be limited. We are monitoring the production behavior of these wells. If production characteristics change sufficiently to warrant some kind of remedial work, we would obtain any required production logs at that time. If you require further information, please contact S. L. Bryant at (907) 564-4203. Very truly yours, TBG:DMH:dmh CC; R.E. MacDougal (Exxon) D.F. Scheve (ARCo) D.D. Smith (ARCo) R.E. 6.1 BP EXPLORATION BP Explo~,J~nE~laska) Inc. 900 East §~n~"' CuJ~ r~ Anchorage, Alaska 99519-66f2~ (907) 561-5111 July 7, 1989 Alaska Oil & Gas Conservation Commission 3001 Porcupine Dr. Anchorage, Alaska 99501 Attention' Mr. C. V. Chatterton Gentlemen' Well Z-23 (34-18-11-12) Enclosed, in triplicate, is form 10-403, Application for Sundry Approvals, for the above-named well. This information reflects our intent to change the liner from 7" 26# L-80 IJ4S to 5-1/2" 17# L-80 TC4S. Yours very truly, J. G. Vidrine Drilling Engineering Supervisor JGV/KTH Enclosures cc' J. Martin (MB 9-4) Prudhoe Production Engineers Well Records w/10 Well File STATE OF ALASKA · '~ .,-, ,sKA OIL AND GAS CONSERVATION COM ..... 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 x Pull tubing ~ Variance__ Perforate__ Other__ 2. Name of Operator BP Exploration 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 720' SNL, 3213' WEL, SEC. 19, T11N, R12E At top of productive interval 4403' SNL, 2394' WEL, SEC. 18, T11N, R12E At effective depth At total depth 4242' SNL, 2312' WEL, SEC. 18, T11N, R12E 5. Type of Well: Development X Exploratory __ Stratigraphic __ Service 6. Datum elevation (DF or KB) KBE- 92 feet 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical 9809 feet Plugs (measured) 9315 feet (BKB) 9704 feet Junk (measured) 9211 feet (BKB) 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-23 (34-18-11-12) 9. Permit number 89-58 10. APl number 50- 029-21950 11. Field/Pool Prudhoe Bay Field~Oil Pool Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: Length Size Cemented 82' 20" 2621' 13-3/8" 3684 cu ft Permafrost 9089' 9-5/8" 1894 cu fl Class G 937' 5-1/2" 541 cu fl Class G measured Well not perforated as of 6/29/89. true vertical Tubing (size, grade, and measured depth)3-1~2" 9.2# L-80 to 8873' Measured depth True vertical depth 118' 118' 2657' 2657' 9125' 8663' 9809' 9315' Packers and SSSV (type and measured depth) Three CTC Formation Packers @ 9010'; 9427' and 9631',i~ ~!~ 2075' 13. Attachments Description summary of proposal__ Detailed operations program __ BOP sketch __ None 14. Estimated date for commencing operation (run 5-1/2" liner) June 30, 1989 16. If proposal was verbally approved Name of approver Mike Minder 6/29/89 Date approved 15. Status of well classification as: Oil X Gas Suspended__ Service 17. I hereby certify that the foregoingjs true and correct to the best of my knowledge. Signed ~~~,~ Title CompletionEngineeringSupervisor ~ - FOR COMMISSION USE ONLY Conditions of approval: Notify Commission so representative may witness Plug integrity ~ BOP Test Location clearance ~ Mechanical Integrity Test Subseauent form re_~re.d.10- ~/~ Z/ -- ORIGINAL SIGNED BY LONNIE C. SMITH Approved by order of the Commission Date 7///~/~/ I AP Pr° v,a I.. ' '"'~Re~rned '' Commissioner Date '//¢0¢ ~; FOrm 10-403 Rev 06/15/88 SUBMIT IN TRIPLICATE May 31, 1989 Telecopy No. (907) 276-7542 J G Vidrine, Supv PBU Drtg Engineering BP Exploration (Alaska) inc P 0 Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Unit Z-23 BP Exploration (Alaska) Inc Permit # 89-58 Surf Loc 720'SNL, 3213'WEL, Sec 19, TllN, R12E, UM Btmhole Loc 4242'SNL, 2312'WEL, Sec 18, TllN, R12E, Dear Mr Vidrine: 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 do~s not authorize conducting drilling operations until all other required permitting determinations are made. To aid us in scheduling field work, please notify this office 24 hours prior to commencing installation of the blowout prevention equipment so that a representative of the Co~nission may be present to witness testing of the equipment before the surface casing shoe is drilled. Where a diverter system is required, please also notify this office 24 hours prior to commencing equipment installation so that the Commission may witness testing before drilling below the shoe of the conductor pipe. Very truly, yours, i~ ?~,? ~ ~.,., ...... ~: , iJ~onnie C Smith Co~nissioner Alaska Oil and Gas Conservation Commission BY ORDER OF THE COPR~ISSION jo Enclosure Department of Fish & Game, Habitat Section - w/o encl Department of Environmental Conservation- w/o encl BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 May 26, 1989 Alaska Oil & Gas Conservation Commission 3001 Porcupine Dr. Anchorage, Alaska 99501 Attn' Mr. C. V. Chatterton Well Z-23 (34-18-11-12) PBU Enclosed, in triplicate, is form 10-401, our Application for Permit to drill the above-named well. Also included are the attachments noted on the permit form and our check in the amount of $100.00 to cover the permit filing fee. Yours very truly, G. Vidrine lling Engineering Supervisor JGV/KTH cc' Shawn Babbitt Well File RECEIVED MAY 2 6 ]989 Alaska 0ii & Gas Cons. Commissioa Anchorage "~ STATE OF ALASKA -' · ALASKA (JIL AND GAS CONSERVATION COMIvllSSlON PERMIT TO DRILL 2O AAC 25.OO5 fla. Type of work Drill [] Redrilll'-Illb. Type of well. Exploratoryl-! Stratigraphic Testl-I Development OilE] Re-Entry [] DeepenFII Service [] Development Gas [] Single Zone [] Multiple Zone[] 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Ex~/or~tion KBE = 92 feet Prudhoe Bay Field/Prudhoe !3. Address 6. Property Designation Bay Pool P. O. Box 196~12. Anchorac/e. Al~k~ g9519-~12 ADL 2,~262 4. Location of weil at surf,.ce 7. Unit or property Name 11. Type Bond(see 20 AAC 25.025) 720' SNL, 3213' WEL, SEC. 19, T11N, R12E Prudhoe Bay Unit At top of productive interval 8. Well number Number 4403' SNL, 2394' WEL, SEC. 18, T11N, R12E Z-23 (34-18-11-12) 2S100302630-277 At total depth 9. Approximate spud date Amount 4242' SNL, 2312' WEL, SEC. 18, T11N, R12E June 1, 1989 $200,000.00 12. Distance to nearest 13. Distance to nearest well 4. Number of acres in property15. Proposed depth(UDandTVD) property line ADL 28245/2637 feet Z-24 35 feet 2560 9844' MD / 9197' TVDfeet 16. To be completed for deviated wells 17. Anticipated pressure (see 20 ^^c 25.035 (e)(2)) Kickoff depth 6000 feet Maximum hole an.~le 400 Maximum surface 3330 pslg At total depth (TVD) 8800' // 439{~ ps, l~l 18. caSing program Setting Depth s~ze Specifications Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 20" Cond. 80' Surface 110' 17-1/2" 13-3/8" 68# L-80 Butt 2622' Surface 2652' 2652' 3684 cu ft Permafrost !2-1./4" 9-5/8" 47# !N.T80S NSCC 9162' Surface 9192' 8696' 1894 cu ft Class G 8-1/2" 7" 26# L-80 IJ4S 902' 8942' 8504' 9844' 9197' 1274 cu ft C/ass 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 Measured depth True Vertical depth Structural Conductor SurfaceRECEIVED Intermediate Production ~,1~ ~ 6 ]989 Liner Perforation depth: measured Naska 0ii & Gas Cons. commissi0[~ true vertical Anchorage 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[] 3 hereb~.~c~~t/,h_~ foregoing is true and correct to the best of my knowledge igned ~, ~ ///'~./.~,..,9 Title PBU Drilling Engineering Supervisor Date ' //' - Commission Use Only Permit Nur~(ber IAPI number IApproval date See cover letter ' ~_~ [5o- oZ?.-;[l?~O [ 0.5/31/89 for other requirements Conditions of approval Samples required [] Yes ~ No Mud Icg required []Yes [] No Hydrogen sulfide measures [] Yes ~ No Direction~ survey require0 ,l~ Yes [] No · qu,red p ess ,or O OlO ' Other:,.~ /L.,J~ ~ by order of Approved by ,,, /~,~ L. " Commissioner ,ne commission Date Form 10-401 Re~.' 12-1-85 ~ Submit in triplicate AFE No. 120953 PROPOSED DRILLING AND COMPLETION PROGRAM WELL Z-23 [34-18-11-121 PBU Install and cement 80' of 20" conductor to surface. Install 20" diverter. The Drilling fluid program will consist of an 9.5 - 10.0 ppg spud mud in the 17- 1/2" hole, a 9.5 - 10.4 ppg water base mud in the 12-1/4" hole and a 9.5 ppg water base mud in the 8-1/2" hole. Drill 17-1/2" hole to 2672' and cement 13-3/8" L-80 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 at the Sag River Sandstone. Run 9-5/8" 47# NT80-S NSCC casing to within 10' of 12-1/4" TD and cement using Class G cement around the 9-5/8" shoe. The 13-3/8" x 9-5/8" annulus will be freeze protected with dry crude. 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 9.5 ppg. filtered NaCL completion fluid. Test casing and lap to 3000 psi. Perforate well with wireline conveyed guns. Run 9-5/8" production packer on 3.5" tubing. Set packer 50' above top of liner. A subsurface safety valve with dual control lines will be placed below base of permafrost. Install and test Xmas tree. Displace tubing to diesel. Set and test packer. Tubing Size: 3-1/2", 9.2# L-80 EUE 8 Round A/B Mod IPC TBG with 7 GLM's. Tailpipe Size: 3-1/2" Tailpipe SDB: 5-25-89 RECEIVED MAY 2 6 1989 Alaska 0il & Gas Cons. Commissioa · _A~qchorage PROPOSED DOWNHOLE DIAGRAM WELL Z-23 [34-18-11-12] PBU/EWE PROPOSED DEPTH BKB 20" Conductor 110 Ball Valve 2100 13-3/8" Casing Shoe 17-1/2" Open Hole 2652 2672 3-1/2" 9.2# L-80 EUE 8 Rd A/B MOD. Butt IPC Tubing with 7 GLM's 9-5/8" Packer 8892 7" Tieback Assembly 8942 9-5/8" Shoe 9192 12-1/4" Open Hole 9202 7" 26# L-80 IJ4S Liner 7" PBTD 7" Liner Shoe 8-1/2" Open Hole R£C[IV£D lglA¥ 2 6 1989 Alaska 0ii & Gas Gens. commission 9804 9844 9844 SDB: 5-8-89 B.O.P. STACK CONFIGURATION 13-5/8 IN. TRIPLE RAM STACK 5000 PSI WP DRILLING ANNULAR PREVENTER 2 IN. KILL LINE GATE GATE j , ! ! PIPE RAMS ! 1 j. L 1 BLIND RAMS I I DRILLING SPOOL I J 4 IN. CHOKE LINE J GATE GATE PIPE RAMS [ I IRECEiVED MAY 2 6 1989 Alaska Oil & Gas Cons. Commission Anchorage SURFACE HOLE DIVERTER SYSTEM Two lines venting 90 deg. apart in directions that ensure safe down wind venting, and ex- tending to a point at least 100' from any potential source of ignition. 10" Full Opening Valves 35' or as required 43' Dresser Sleeve 10" Diverter Line 1. All pipe connections 150# ANSI Flanges or welded connections and secured to prevent movement. 2. Manual 10" t~ valves mechanically connected to ensure that one valve is fail-safe open at all times. 3. All turns are 90 deg. and targeted. 10" Full opening ball valve w/Hydraulic Actuator Cellar 20" Diverter Spool w/10" Side Outlet RECEIVED IAY 2 6 1989 Alaska 0il & ~as Cons. Commissi0rl Anchorage JWB 2/20/89 NORTH WELL Ne Z-2:5 · SURFACE LOCATION I LAT. · 70° 17' 54. 240" LONG, · 149° II ' 40 . 333" Y · X · 5, 959, 360.03 A.S.P. 599 , 459.07 ZONE 4 720' FROM N. LINE SECT 19 1739' FROM W. LINE SECT. 19 T. II N. T. ION. T. II N. lC:ALE : 0 I l 1 ( MILES TW. 'C' RECEIVED MAY 2 6 ]989 Alaska Oil & Gas Cons. Commission Anchorage CERTIFICATE OF SURVEYOR: I HEREBY CERTIFY THAT I AM PROPERLY REGISTERED AND LICENSED TO PRACTICE LAND SURVEYIN6 !~1 THE STATE OF ALASKA AND THAT THIS PLAT REPRESENTS A LOCATION SURVEY MAD~ BY ME OR UNDER MY ~JPERVIS~ON, AND THAT ALL DIMENSIONS AND OTHER DE~~¢ CORRECT. *_'~'1~'~'''''~'~'''/ -- .NOV. 20,86 SURVEYOR DATE: OF ,4 SHEET I'OF 2 WELL PAD 'Z' ii WELL N° Z- 23 AS-BUILT __ LOCATED IN PROTRACTED SECT. 19 , T. II N. , R. 12 £, U, M. SURVEYED FOR : ~I'AN[:~UI~D ALASKA I:~C)DuETIO~J CO. PREPARED BY : KUUKPIK - TECHNICAL SER¥o INC. PRUDHOE BAY OFFICE DATE: NOV. 20,86 DRAWN BY: AT. CNKD. BY: R,H. NORTH LINE OF SECTION ICJ o NW CORN. OF SECT. 19 SUM P 1739' · · · · · · · · · · · · · · · · N ~ ~ ~ N N F4 N N N -- C~J p3 q' K') ~ F-* ID O~ ~ SUMP l NORTH 1 RECEIVE ~,~IAY 2 6 198 Al~sk~ 0il & Gas Cons. Co Anchorage SHEET 2 OF 2 D WELL PAD 'Z* J ,WELL Ne Z-23 Al-BUILT ~mis~.~.~ ... LOCATED IN SEC"[ 18, T. II ~., R.I~Ir,U,M. , · , SURVEYED FOR : ST'AJ~ID~RD AL,,~ J:~TJO~ O~. PI~PAIqED 8'1' : I DATE: IIOV. 3~O, 86 KUUKPIK - T*KCHNICAL SERV. INC. DRAWN R~': B.*~ PRUDHOE J&¥ (~Flr|¢g C#KD. ri': R.N. _$45DUAI24: [DRANO28]Z23_CLOSAP_SHORT7, LIS; 1 Sea,ch Radius= 200 7 DEQREE LEAD LINE For p~oposed well: Z-~3 [34-18-11-12] Location = W-E S-N TVD(SBS) Top 599459.00 5959360.00 -92.00 Bottom 600077,25 5961131.78 8990.00 5-MAY-1989 16:38 --- Closest Approach Analgsis --- Date: O-MAY-89 Time: 16:38:11 Note: All depths in Feet Below Kellg Bushing (BKB) Closest Approach WELL IDENT /PROPOSED\ /NEARBY\ TVD DEPART TVD DEPART AO~9-~184400 Z-14 100. 0 O. 0 100. 0 O. 4 A0~9-~184900 Z-15 1100. ~ O. 0 1100. 0 -q. 8 AO~9-~185900 Z-~O 1500. 6 O. 0 1500. 0 5. 7 Z--qO 842. 7 O. 0 842. I 4. ~ A02~-~ 191700 Z--~4 O. 3 O, 0 O. 0 O. 0 SUMMARY The well which comes closest to the proposed well is: A02~-21~1700 Z-24 Closest approach distance = K~CK OFF For this run = 35.0 Feet 6000.0 Feet CLOSEST DISTANCE 287.1 302.~ 419.6 68.2 ~5.0 Vertical Intersection /PROPOSED\ /NEARBY\ TVD DEPART TVD DEP AR T Page 1 VER 1 .... ~L · DISTANCE ., _$4$DUA 124: [ DRANO28 ] Z23_CLOSAP_SHOR T. L ! S ~ 1 Seaech Radius= 200 COURSE LINE Fo~ peoposed well: Z-23 [34-18-11-12] Location = W-E S-N TVD(SBS) Top 599459.00 59593&0.00 Bottom 500288.~7 ~951043,23 8990.00 5-MAY-1989 15:37 --- Closest Approach Analgsis --- Date: 5-MAY-89 Time: 15:37:27 Note: All depths in Peet Below Kellg Bushing Closest Approach WELL IDENT /PROPOSED\ /NEARBY\ TVD DEPART TVD DEPART A029-2184400 Z-14 100. 0 O. 0 100. 0 O. 4 A029-2184900 Z-15 1100. 2 O. 0 1100. 0 2. 8 A029-2185900 Z-20 1500. 5 O. 0 1500. 0 5. 7 A029-2190200 Z-25 842. 7 O. 0 842. 1 4. 9 A029-2191700 Z-24 O. 3 O. 0 O. 0 O. 0 SUMMARY The well which comes closest to the p~oposed well is: A0~9-2191700 Z-24 CLOSEST DISTANCE 287.1 302.2 419.5 58.2 35.0 Vertical Intersection /PROPOSED\ /NEARBY\ TVD DEPART TVD DEPART Page 1 8052.0 1018.4 471~.6 ~89.4 -3331.8 7573.4 619.7 4449.3 505.0 -3123.8 .VE~TICA~ · DISTANCE Closest approach distance = KICK OFF ~o~ this Tun = 35.0 ~eet &O00. O ~eet ror^L ~URFAC£ YOL~,/rl;: Jz,iq &.~L 1'o 'D£~C o I.Z 3 $0 ~. ~0 rRIFLO~ TRA! 1 - Brandt Dual Tandem Shale Shaker 1 - Demco 6-12" Cone Shale Desander 1 - Demoo 416H w/16 cones & (1) ~ 48H w/16 cones (Desilter) 1 - Drilco Atmospheric Mud Degasser 1- 200 gpm Operating Capacity. Centrifuge 15 - Brandt MA5 Mud Mix Agitators 1- 150 bbl. Trip. Tank 1 - Recording drilling fluid pit level indicator with both visual and audio warning devices at driller' s console 1 - Drflling fluid flow s.~,a~s~ or · · °lS with readout at console MUD WEIGHT CALCULATIONS WELL Z-23 (34-18-11-12~ Mud Wt. (8-1/2" Hole): P Sag River: P SadIerochit: P Top Sadlerochit: OB Sag River: OB Top Sadlerochit: 9-5/8" Casing Pt. Top Sag River Top Sadlerochit 9.5 ppg. 4010 psi. 4030 psi. at 8800' TVDSS 4025 psi. 199 psi. 273 psi. 8696' TVDBKB 8704' TVDBKB 8877' TVDBKB 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: 2652' 2 X Annular volume 3684 (cuft) 3961 Sx Permafrost @ 0.93 Cu ft/Sk 9192' 90% Annular Volume to 13-3/8" + 50 cuft 1894 (cuft) 974 (cuft) 516 Sx G+8% @ 1.89 Cu ft/Sk 920 (cuft) 800 Sx Neat G @ 1.15 Cu ft/Sk 9844' 1.5 X Annular volume to 9-5/8" shoe + 150 cuft 274 (cuft) 232 Sx Neat G @ 1.18 Cu ft/Sk SDB: 5-25-89 vlAY 2 6 Alaska Oil & ~;~s Cons. Anct~orago CHECK LIST FOR NEW WELL PERMITS ITEM APPROVE DATE (2) Loc (2 thru 8) (8) (3) Admi= ~ ._~/~/~ 9. (9 thru 15) ' ' 10. (10 and 13) 12. 13. (4) (14 thru 22) (s) OPE (23 thru 28) (29 thru 31) ' (6) Add: Geolo g7: EnEi~eering: rev: 01/30/89 6.011 Company ~. ~ ~ ~.~.~.~,',,, Lease & / YES Is the permit fee attached .......................................... ~ Well No...~O~ NO REMARKS 2, Is well to be located in a defined pool ............................. ._v~_ __ 3. Is well located proper distance from property line .................. ,.rf~_~ ....... 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 ...................... ~' 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. For 29. 30. 31. 32. 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 ......................... ~ 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 ~dP~Pd~ psig .. Does the choke manifold comply w/API RP-53 (May 84) .................. Is the presence of H2S gas probable ................................. explorato~ ~d Stratigraphic wells: Are data presented on potential overpressure zones? ................. Are seismic ~alysis data presented on shallow gas zones ............ If an offshore loc., are survey results of seabed conditions presented / Additional requirements ........................................... ~ Additional -~ INITIAL "' GEd. uN'IT ON/OFF POOL CLASS STATUS AREA NO. SHORE ,. c¥o/.5o / -o,'.o 0 /t TO OX/ 0 Well Histo.ry 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. 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