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Home My WebLink About189-042MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: Julie Heusser, Commissioner DATE: April 21, 2001 THRU: Tom Maunder, P. I. Supervisor FROM: Lou Gdmaldi, SUBJECT: Petroleum Inspector SVS Tests BPX Z-pad Prudhoe Bay Field Saturday, April 21, 2001; I witnessed the three-month SVS retests on BPX Z pad in the Western Operating Area of the Prudhoe Bay Field. Merv Liddelow performed the SVS tests today. The test results (one SSV Failure) are noted on the accompanied SVS test spreadsheet. All well houses were in "OK" condition. This was the first experience I have had with the new SV control system on Z pad and found it to operate quite well. The temperatures today were somewhat mild +15 and it remains to be-seen how the will hold u next cold ( ) : . , . y p dudng winter's season. WellS Z-5 and Z-8 had slow clOsing SSV's (+ 2 minutes), Merv called the Automation crew and these were being worked on before I left the pad. The pad is being used as a staging area for some pipeline fabrication and has some equipment and material stored on it. This was kept for the most part neat and orderly. .SUMMARY: I witnessed the three-month SVS retests on Z pad in the Prudhoe Bay Field. 20 wells, 40 components, Onefailure,. 2;4% 34 Wellhouse inspections, no problems. Attachmen.ts: SVS PBU Z pad 4-21-01 LG.XLS NON-CONFIDENTIAL SVS PBU Z pad 4-21-0'1 LG Alaska Oil and Gas Conservation Commission Safety Valve System Test Report Operator: BPX ~,, Operator Rep: Merv Lidd¢low AOGCC Rep: Lou Grimaldi Submitted By: Lou G. Date: Field/Unit/Pad: ..Pm...dhoe Ba..y. Field, Z p~ Separator psi: LPS 159 HPS 21-Apr i i i i i i ii i .. i . I, i . . . I i ii ! i i Well Permit Separ Set L/P Test Test Test Date Oil, WAG, GIN J, Numbe,r Number PSi, PSI Trip Code Code Code ,Passed GaS or CYCLE Z-01 1880660 I59 '12~' 125 ..... P '1~' " z-02A 1960430 ............................ Z-'0~ ' "1971310' 159 125 i'15 " e ~ ...... z-04 1891230 Z-'05 1900780 ' '159 '~125 " 155 P 'e ........... z-06 " '1880320 ' 159 ' 155 " '155 P' e ....... · Z'07A 1931100 Z-08A ' 1931280 '159 ..... 1'25 120! "P P ....... z-09 8,9085o ,, Z-10 1891160 Z-'I 1 '" 190'0720 159 '125 ' ' 125 P"' P ....... Z_12 .... 1891020 " ............ Z-13 ' 1900940:" 1'59! 12~ "'125 " 1~" e ....... Z-14A 1980510i z_ l 5 ] 880'880 , Z'i6' ' i920120 'i59 ' ' 12'5 125 p P ' z-17 ' 18913'9o{ "159 ......... i2'5 125 'p ...... p ........ z-18 i8~09601 ........ , , , , , , , Z-19 1920230 Z-20 1881000 Z-21 189045~0 159 ' 1'~'5 ' '155 'P 'P ....... Z-22B" i~60350 " 1'59 125 115 ....e P "' Z-23A'" i950430 159 125 125 p P ' '' z-24 18~0180 159 125 125 P ,. 4, r~,~-.3'~ ~'\~' N? "' z,25 1881590 159 125 125 P P z-26 1890520 159' '125 125 'P ..... P ..... z-27'" 1960510 ' i59 - 125 125 t; P " z-28- 1881270 z-29 1890650 "159 1'25 120 P P ......... z-30 1900230 159 125i 120 P P z-31 1881120 Z-'32B 1970340 1'59 ' 125' 125 ' p " e ........ z-33A 1890050 z-35 1980930 ~Z-38 1980600 159 125 120 ' P P ............... RJF 1/16/01 Page 1 of 2 SVS PBU Z pad 4-21-11.~ ~_G Well Number Wells: .... i L Permit Number 20 "separ- 'Set · PSI PSI Trip Components: Test' ] 'Test ! Test I - Date I wn , Code I Code [ Code ] Passed [ GAS orCYCLE I 40 Failures: I Failure Rate: 2.50% ~ Remarks: Z,5 & 8 Long closure times on SSV. RJF 1/16/01 Page 2 of 2 SVS PBU Z pad 4-21-01 LG PLUGGI~.= & LOCATION RF, PORT State of Alaska .ALASKA. 0IL & GAS CONSER%-ATION COMI4ISSION -. .OTD Ro. Lease Memcrandu_m To File: =: '/IqoO, Abnd Date Completed 2err i~=az~za!s - tops: Review the well file, and-c~,-ent on plugging, well head loc. c ear code. sUatus, and iocation c!earanc~ - ~rovide~,~ ~ ~ ~, Well head cut o'~: Code · o STATE OF ALASKA ALAf:,r¢, OIL AND GAS CONSERVATION CO,v,MISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG Plugged Back for Sidetrack 1. Status of Well Classification of Service Well [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number BP Exploration (Alaska) Inc. 189-042 300-178 3. Address 8. APl Number P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21938-00 4. Location of well at surface ,.";:~i'~ 9. Unit or Lease Name 71 At 9'top S NL, 1669'of productive E WL,intervaiSEC. 19, T11N, R12E, U M~ ~ ~'"'"~'%~~1*~ II P rudhoe ._ Bay Unit ~'~:~" ' "'10. Well NumS~r At total depth i i~:i." Z-21 4487' NSL, 2316' EWL, SEC. 18, T11N, R12E, UM i 1. Field and Pool 5. Elevation in feet (indicate KB, DF, etc.) 6. Lease Designation and Serial No. Prudhoe Bay Field / Prudhoe Bay Pool KBE = 91.82' ADL 028262 12. Date Spudded 04/19/1989 ! 13' Date T'D' Reached I14' Date cOmp'' susp'' Or Aband' 05/06/1989 12/4/2000 I15' water depth' if OffshOre N/A MSL II 16' N°' °f C°mpleti°ns Zero 17. Total Depth (MD+TVD) 118. Plug Back Depth (MD+TVD) 119. Directional Survey] 20. Depth where SSSV set1 21. Thickness of Permafrost 11400 9193 FTI 11052 8934 FTI [] Yes [] NoI N/A MD] 1900' (Approx.) 22. Type Electric or Other Logs Run DIFL, LDT / CNL - Raw Poro, BHC / AL-GR 23. CASING, LINER AND CEMENTING RECORD CASING SETTING DEPTH HOLE SIZE WT. PER FT. GRADE TOP BOTTOM SIZE CEMENTING RECORD AMOUNT PULLED 20" Conductor Surface 110' 13-3/8" 68# L-80 Surface 2657' 17-1/2" 3684 cu ft Permafrost 9-5/8" 47# NT80S Surface 10528' 12-1/4" 2268 cu ft Class 'G' 7" 26# L-80 10259' 11400' 8-1/2" 378 cuft Class 'G' 24. Perforations open to Production (MD+TVD of Top and 25. TUBING RECORD Bottom and interval, size and number) SIZE DEPTH SET (MD) PACKER SET (MD) None 3-1/2", 9.2#, 13Cr 10088' - 10294' 10123' & 10217' MD TVD MD TVD 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 9937' Set EZSV with Whipstock on Top 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 OIL-BBL GAS-MCF WATER-BBL CHOKE SIZE ~ GAS-OIL RATIO TEST PERIOD I Flow Tubing Casing Pressure CALCULATED OIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-APl (CORR) Press. 24-Hour RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. Form 10-407 Rev. 07-01-80 Submit In Duplicate 29. Geologic Markers 30. Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids recovered Marker Name Depth Depth and gravity, GOR, and time of each phase. Sag River 10526' 8556' Shublik A 10562' 8581' Sadlerochit / Zone 4 10773' 8732' ~, P iq: I "~' "° ~n, ? n 'ar!r,. - , 31. List ol ^ttachment$: Summar~ of Daily Drilling Reports 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed Terrie Hubble ,.,,,~,/~ ~ Title Technical Assistant Date (~-. { 7" (~ / Z-21 189-042 300-178 Prepared By Name/Number: Terrie Hubble, 564-4628 Well Number Permit No. / Approval No. 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 cementing and the location of the cementing tool. ITEM 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, Other-explain. ITEM 28: If no cores taken, indicate 'none'. Form 10-407 Rev. 07-01-80 OFqiGIIIAL Well: Z-21A Accept: 12/01/00 Field: Prudhoe Bay Spud: 12/06/00 APl: 50-029-21938-01 Release: 12/14/00 Permit: 200-101 Ri~l: Nabors 7ES PRE-RIG WORK 10~26~O0 Tag hard bottom with nozzle at 10261' (CTMS), unable to go deeper, unable to inject. RIH with motor and 2.72" mill. 10/27/00 Tag obstruction at 10266' with 2.70" junk mill. No progress after several hard stalls. Clean pick up. POH with mill. Mill is under gauge (approximately 2.65). Freeze protect well. 10/28/00 Tagged unknown obstruction at 10234' sim with Lib origin still unknown. 11/12/OO Investigate problem in the tail pipe. Ran 2.5" drive down bailer. Sat down at 10196' sim, worked through, RIH to 10225' sim. No sample, bailer bottom tore up. Ran 2.625 cen/ 2.5 Lib. Sat down at 10196' sim. Work through. RIH to 10227' wlm. Impression of parted / collapsed pipe (?). (Also has unidentifiable marking in middle of block.) Turned Lib and bailer bottom in to supervisor. 11/14~00 Rig up, arm cutter, RIH with cutter. Tie into SWS jewelry log. Cut the middle of the first joint above upper packer at approximately 10085'. Positive indication of shot. Tubing pressure came up to 900#. POOH, rig down, move off. POST RIG WORK 01/07/01 Drifted tubing with 2.5 dummy gun and T.E.L., unable to locate tubing tail. Tagged at 10875' sim. 01/11101 Found TD at 10874' elm, top of cement at 10317' at liner top. 03/04/01 MIRU, drift coil. Pick up 2.5" down jet nozzle and DCV's. RIH and clean out down to TD at 11063' ctm. Freeze protect to 2500' with 60/40. 03/05/01 Run SCMT for cement bond and jewelry log. 03/11101 Run 2-1/2" Powerjet - Shot at 6 spf, total of 61 shots. Perf interval was 10858' to 10868'. BP EXPLORATION Page 1 of 5 , operati°ns Summa Report , Legal Well Name: Z-21 Common Well Name: Z-21A Spud Date: 4/19/1989 Event Name: REENTER & COMPLETE Start: 12/1/2000 End: 12/14/2000 Contractor Name: NABORS Rig Release: 12/14/2000 Group: RIG Rig Name: NABORS 7ES Rig Number: ~ ~: Sub ph~ : ; :::Date From:~TO ;Hours TaskCode ;.~.,.,,,e Description of Operations 11/30/2000 00:00 - 03:00 3.00 MOB PRE PJSM,PJD Floor, Disconnect Hoses & Lines to Pits, UnPin TD, L/D Cattle Chute, Remove Hand Rails & Steps, Move Camp & Pits From M17A to Z21A 03:00 - 06:30 3.50 MOB PRE PJSM, Remove Pins, Lower Derrick, Lift Cellar Doors, PUll Off of Well 06:30 - 16:30 10.00 MOB PRE Move Sub Base From M Pad to Z Pad, Crossed Kuparuk River Bridges 16:30 - 19:00 2.50 MOB PRE Lay Rig Mats, Spot Sub Over Z21A 19:00 - 22:00 3.00 MOB PRE Set Shop & Pits, Replace Flowline, Set Camp 22:00 - 00:00 2.00 MOB PRE PJSM; Raise Derrick & Pin, Pin Cattle Chute 12/1/2000 00:00- 04:30 4.50 MOB PRE PJU, Drlg Unit 04:30 - 05:00 0.50 MOB PRE Pre Spud Safety Mtg, Review Check List 05:00 - 07:30 2.50 WHSUR DECOMP N/U Secondary Annulus Valve on Wellhead, PJU For Circ 07:30 - 09:00 1.50 WHSUR DECOMP Pull TWC With Lubricator, Had to Steam Wellhead to Melt Ice, Plug in Same 09:00 - 15:30 6.50 WHSUR DECOMP Displace Diesel Freeze Protection & Seawater to 8.8 ppg NaCI Brine @ 4.5 BPM @ 350 psi 15:30 - 16:30 1.00 WHSUR DECOMP Set TWC & Test from below to 2000 psi 16:30 - 18:30 2.00 WHSUR DECOMP Blow Down Lines, N/D Tree & Adapter 18:30 - 19:00 0.50 WHSUR DECOMP Pull SBMS Seal & Terminate Twin Control Lines 19:00- 22:30 3.50 WHSUR DECOMP N/U BOP 22:30 - 23:00 0.50 WHSUR DECOMP Jack & Level Sub 23:00 - 00:00 1.00 WHSUi; DECOMP R/U Test Equipment, Prep to Test BOP 12/2/2000 00:00 - 04:00 4.00 BOPSUF DECOMP Test BOPs, All Lines, Valves Etc to 250 5 Minutes, 3500 10 Minutes. Could not test lower pipe rams, XO in way. 04:00 - 05:00 1.00 BOPSUI; DECOMP L/D Test Joint 05:00 - 06:00 1.00 BOPSUF DECOMP PJU DSM Lubricator, Pull TWC 06:00 - 07:30 1.50 PULL DECOMP BOLDS, Screw Into HGR, Pull HGR to Floor w/112K Max, Flow Check Well, Static 07:30- 09:30 2.00 PULL DECOMP PJU CR Equipment, PJSM 09:30 - 00:00 14.50 PULL DECOMP Pull 321 Jts 3.5" 9.2# 13Cr80 NSCT R-2 Tbg, SSSV, Recovered 58 SS Bands, 5 GLMs & 13.51' of Jet Cut Jnt, NORM Inspect 12/3/2000 00:00 - 00:30 0.50 PULL DECOMP Finish L/D 3.5" TBG; 321 Jts 3.5" 9.3~ 13Cr80 NSCT R-2; SSSV, 5 GLM Assy & 13.51' Cut Jt, 58 SSBands Norm Inspect All. Calc TOF 10088 00:30 - 01:30 1.00 PULL DECOMP PJD Chrome Tbg Tools 01:30 - 02:00 0.50 PULL DECOMP Clean Rig Floor 02:00 - 03:00 1.00 BOPSUIq DECOMP M/U Test Plug, Set in Wellhead, Test Lower Pipe Rams( 2 7/8 X 5" VBR) to 250 Low, 5 Min, 3500 Hi, 10 Minutes, Pull Test Plug, Set Wear Ring 03:00 - 05:00 2.00 CLEAN DECOMP P/U BHA # 1, RIH to 963 05:00 - 06:00 1.00 CLEAN DECOMP Service Top Drive 06:00 - 07:00 1.00 CLEAN DECOMP Cut & Slip Drill Line 07:00 - 14:00 7.00 CLEAN DECOMP RIH, Picking Up 4" DP to 10024 14:00 - 15:00 1.00 CLEAN DECOMP Circ Hi Vis Sweep 12 BPM ~ 1950 psi, PU 215K, SO 172K, RT 185K, 20 RPM @ 5K ft/#, Small Amount Sand in Returns 15:00 - 15:30 0.50 CLEAN DECOMP Pump Dry Job, Blow Down Top Drive 15:30 - 20:30 5.00 CLEAN DECOMP POH with BHA #1 20:30 - 21:00 0.50 CLEAN DECOMP Clear Rig Floor 21:00 - 23:00 2.00 CLEAN DECOMP PJSM, PJU Sheaves, High Wind Conditions, PJU Schlumberger 23:00 - 00:00 1.00 CLEAN DECOMP RIH with GPJCCL/EZSV, Correlate with Atlas Compensated Neutron-Gamma Ray & Tie in W/Kingak "JD" 12/4/2000 00:00 - 03:30 3.50 CLEAN DECOMP Continue Run GPJCCL & EZSV BP, Set @ 9937 (2' above Csg Collar), POH WL PJSM, P,/D Schlumberger 03:30 - 04:00 0.50 CLEAN DECOMP Close Blind Rams, Pressure Test BP & Csg to 3500 psi, 30 Min Printed: 1/12/2001 4:31:50 PM BP EXPLORATION Page 2 of 5 Operations Summary Report .. · · Legal Well Name: Z-21 Common Well Name: Z-21A Spud Date: 4/19/1989 Event Name: REENTER & COMPLETE Start: 12/1/2000 End: 12/14/2000 Contractor Name: NABORS Rig Release: 12/14/2000 Group: RIG Rig Name: NABORS 7ES Rig Number: Date FrOm, T° Hours. Task sub phaSe Description of Operations Code 12/4/2000 04:00 - 07:30 3.50 STWHIP LNR1 P/U BHA # 2, RIH to 1057 07:30 - 08:00 0.50 STVVHIP LNR1 Service Top Drive 08:00 - 08:30 0.50 STWHIP LNR1 Install Guide (removed for BHA M/U) 08:30 - 09:30 1.00 STWHIP LNR1 RIH to 2550, Test MWD 09:30 - 11:30 2.00 STWHIP LNR1 RIH to 6000' Fill Pipe 11:30 - 14:00 2.50 STWHIP LNR1 RIH to 9923 14:00 - 15:30 1.50 STWHIP LNR1 Break Cir¢, Orient WS, Tag BP@ 9939, 210K Up, 175K Down, Orient WS to 80R of Highside, Set Whipstock Anchor to 18K, Test Pull 5K, Shear Off WS w/40K (TOW 9916/BOW 9932 15:30 - 18:00 2.50 STWHIP LNR1 Displace 8.8 Brine with 25 bbl Hi Vis Weighted Spacer to 9.6#/gal, Chased with 10.9 LSND Mud @ 8 BPM 18:00 - 00:00 6.00 STWHIP LNR1 Milling Window f/9916-9929, WeB 8-10, RPM 120, Torque 9000, Pump Rate 416 gpm, 2200 psi 12/5/2000 00:00 - 05:00 5.00 STWHIP LNR1 Continued to mill window in 9 5~8" casing to 9934 ft. and drilled formation to 9949 ft. Worked and reamed mill thru window with no drag or torque. Pumped Hi-Lo sweep. 05:00 - 05:30 0.50 STWHIP LNR1 Conducted FIT to 670 psi with no leakoff. EMW FIT at 9934 ft. MD ( 8125 ft. TVD) - 12.49 ppg. 05:30 - 06:00 0.50 STWHIP LNR1 Pump dry job. 06:00 - 09:00 3.00 STWHIP LNR1 POOH with drill pipe. 09:00 - 11:00 2.00 STWHIP LNR1 Laid down whipstock mill BHA. Mills were 8 1/2" OD gauge. 11:00 - 13:00 2.00 STWHIP LNR1 Cleared drill floor of tools. Pulled wear ring. Flushed BOP stack. Set wear ring. 13:00 - 13:30 0.50 DRILL LNR1 Calibrated Sperry Sun depth tracking equipment. 13:30 - 15:30 2.00 DRILL LNR1 Picked up and made up directional drilling BHA #2. 15:30 - 17:30 2.00 DRILL LNR1 Picked up 21 joints HWDP. 17:30 - 20:00 2.50 DRILL LNR1 RIH to 8300 ft. Filled drill pipe. 20:00 - 21:30 1.50 DRILL LNR1 PJSM. Slipped and cut 80 ft. drill line. Serviced top drive. 21:30 - 00:00 2.50 DRILL LNR1 MAD PASS logged interval 9700 ft. to 9917 ft. 12/6/2000 00:00 - 00:30 0.50 DRILL LNR1 Finish running MAD pass log to maximum bit depth of 9944 ft. 00:30 - 12:00 11.50 DRILL LNR1 Directionally drilled from 9949 ft. to 10, 120 ft. AST - 7 hrs; ART - 1 hr. 12:00 o 13:00 1.00 DRILL LNR1 Cleaned suction screens on mud pumps. 13:00 - 23:00 10.00 DRILL LNR1 Directionally drilled to 10,458 ft. base of Kingak/Top of Sag River. Final P rate - 18 ft/hr. AST - 2.5 hrs; ART - 6.5 hrs. 23:00 - 00:00 1.00 DRILL LNR1 Pump hi vis sweep while CBU for geological samples. 12/7/2000 00:00 - 00:30 0.50 DRILL LNR1 Finished circulating bottoms up for geological samples and circulated sweep to surface. 00:30 - 01:30 1.00 DRILL LNR1 Made wiper trip to 9916 ft. Had no drag out or in. Had no fill back on bottom. 01:30 - 03:30 2.00 DRILL LNR1 Circulated hi vis sweep surface to surface. Rotated and reciprocated drill pipe while circulating at 550 gpm. Conditioned mud to run liner. Spotted 50 barrel liner running mud pill in interval 9750-10,458 ft. 03:30 - 04:00 0.50 DRILL LNR1 Dropped ESS survey for JORPS. 04:00 - 08:00 4.00 DRILL LNR1 POOH w/drill pipe. 08:00 - 09:30 1.50 DRILL LNR1 Laid down direction BHA. 09:30 - 10:30 1.00 CASE LNR1 Cleared rig floor and rigged up casing handling equipment. 10:30 - 12:00 1.50 CASE LNR1 -leld PJSM with Nabors casing. Made up 7" shoe joints and tested. 12:00 - 13:30 1.50 CASE LNR1 RIH picking up 7" casing liner. Made up Baker liner hanger. 13:30 o 14:00 0.50 CASE LNR1 Filled liner and drill pipe and circulated. 14:00 - 21:00 7.00 CASE LNR1 :{IH with 7" liner on 4" drill pipe. Made up cementing head on single. 21:00 - 22:00 1.00 CASE LNR1 Circulated liner volume with shoe at 9878 ft. 22:00 - 23:00 1.00 CASE LNR1 Finished RIH with liner to 10,458 ft. Had to wash last 20 ft. to bottom. Printed: 1112/2001 4:31:50 PM Re: Z-2 ~ P&A Problems and Plans Subject: Re: Z-21 P&A Problems and Plans [ ~ % _ (,~ L~ Date: Mon, 13 Nov 2000 16:26:04-0900 From: Blair Wondzell <blair_wondzell~admin.state.ak.us> Organization: State of Alaska, Dept of Admin, Oil 8: Gas To: "Isaacson, William S" <IsaacsWS~BP.com> CC: Tom Maunder <tom_maunder~admin.state.ak.us> Bill, Tom and I looked at your proposal and noted that you had tried to pump by the obstruction with 2400 psig surface pressure with no loss. cemented liner lap will provide attitional barriers. to abandon and side track without setting a cement plug. Good Luck, Blair Wondzell, 11/13/00. In addition your bridge plug and the We agree with your propsal to proceed "Isaacson, William S" wrote: <<Z-llA Change to Sundry Plans. doc>> William S. Isaacson Alaska Drilling & Wells Phone: (907) 564-5521 Fax: (907) 564-4040 E-mail: IsaacsWSSBP. corn > Name: Z-21A Change to Sundry Plans.doc > Z-21A Change to Sundry Plans.doc Type: Microsoft Word Document ( app l i ca ti on /mswo rd ) > Encoding: base64 afl 11/13/00 4:26 PM Z-21 P&,~-' Problems and Plans Subject: Z-21 P&A Problems and Plans Date: Mon, 13 Nov 2000 18:54:39 -0600 From: "Isaacson, William S" <IsaacsWS~BP.com> To: "Blair Wondzell (E-mail)" <blair_wondzell~admin. state.ak.us> <<Z-21A Change to Sundry Plans.doc>> William S. Isaacson Alaska Drilling & Wells Phone: (907) 564-5521 Fax: (907) 564-4040 E-mail: IsaacsWS@BP.com ~Z-2 lA Change to Sundry Plans.doc ............ Name:..z_21A. change to .Sundry Type: Microsoft Word Document (application/msword)i Encoding: base64 1 ofl 11/13/00 4:18 PM ROW BP AI. JW~KA ImnuN~ & WIEL~ Mr. Blair Wondzell Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, AK 99501 (907) 279-1433 (907) 276-7542 (fax) November 13, 2000 Re: Change to PBU Well Z-21A P&A Plan (Approved Sundry #300-178) Dear Mr. Wondzell, As per our telephone conversation earlier today, we have been experiencing difficulties with P&A operations on the existing perforations of PBU Well Z-21. This letter is to provide you with an understanding of the current condition of well Z-21 and to provide a general outline of our proposed path forward. As per the approved 'Application for Sundry Approval' (Permit #200-101), the plan was to P&A the existing perforations by laying in cement with coiled tubing as per standard PBU operations. Coiled tubing was moved onto the well and after cleaning out several feet of fill in the 3-1/2" tubing, a hard restriction was encountered in the 3-1/2" tailpipe just below the bottom 9-5/8" production packer. An attempt to establish injection was made, however the wellbore pressured up to 2400 psi without any signs of leak-off. A motor and mill were then run in the hole on coiled tubing, however no progress was made at cleaning-out the restriction. Plans were made to cut the 3-1/2" tailpipe and allow it to fall downhole, providing access to the 7" liner and perforations. A wireline collar Iocator log was run and found the restriction to be right at the bottom of the lower production packer, therefore not allowing enough room to make the tubing cut. The proposed path forward is to abandon attempts to access the existing perforations and use barriers created in the upcoming sidetrack operations to complete the P&A. Those barriers will include a bridge plug set in the 9-5/8" casing and cement from the 7" liner cement job. The plan is to cut the 3-1/2" tubing above the two production packers at ~10,090' MD. The rig would then move on and set a bridge plug on wireline at .,-9924' MD. The well will then be sidetracked and a 7" liner cemented back into the 9-5/8" casing. Please see the attached diagrams for details. If you have any questions or require any additional information on this matter, please contact me at 564-5521. Sincerely, William S. Isaacson Drilling Engineer BP Alaska Drilling & Wells I TREE: 4-!/16" - 5M CtW Chrome WELLHEAD: 13 5/'8" - 5M FMC Z-21A Proposed Completion II Base Flange Elevation = 57.42' Nabors 7ES RKB = 84.12' 13-3/8", 68 #Iff, L-80, BTC 3-1/2" Gas Lift Mandrels with handling pups installed, .~ GAS LIFr MANDRELS 'f'VD Size Valve Type f--1 2 3 4 , 6 i _ 3334' 4834' 5834' 6684' 7534' 8330' or 1 jt abovepkr assy 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2" RP Shear DV DV DV DV DV 3-112" 9.2# 13Cr-80, NSCT Tubing (rerun what was pulled from 1he well) BAKER 7" x g-5/8" LTner Tie Back Sleeve ZXP Liner Top Packer 'HMC' Hydraulic Liner Hanger Window Milled [rom Whipstock Top of Window at +/-9,900' MD Bridge Plug set at +/-9924' MD ~ Pre-Rig Tubing Cut at +/-10,090' Top 9-5/8" Production Packer at +I-10,123' 7" Liner Top L10,260;I 9-5/8", 47 #/fi, L80, NSCC 1 i6,~2.' I Production Packer not allowing access to perforations. Perforatlons from 10, 996' to 11,166' Top Hard Fill tagged al 11,052' MD 7", 26 #/ft, LB0, BTC-Mod I 11,400' I 3-I/2' 'X' Landing Nipple wiih 2.8~3" seal bore. 7" x 3-1/2" Baker '$-3' Production Packer 3-112" 'X' Landing Nipple wi[h 2.813" seal bore, 3-1/2' 'XN' Landing Nipple with 2.813" seal bore aPd 2.75" No,Go ID. 3,1/2' Wi,aLine Entry Guide spaced-out into 4.1/2" liner tie-back ,~leeve, I +/-10,325' IBAKER 5"x 7' Tie Back Sleeve ZXP Liner Top Packer 'HMC' Hydraulic Liner Hangar +1-10,477' I 7", 26 #/ft, L-80, BTC-Mod Plug Back Depth I +/,11~,1:i0' I 4-1/2-12.o #/fi, 13Cr-80, N$CT [ +/.11,1'94' I Date Rev By Comments 11/13/00 WSI Proposed Completion PRUDHOE BAY UNIT WELL: Z-21A APl NO' 50-029-21938-01 Shared Services Drilling i~;.,~,,!~ ~! ...... ~~! l]./lg/2UOU 10:4U FAX HO'/ b04 4U4U ii i TREE: 4" CIW WELLHEAD: FMC ACTUATOR: BAKER Z-21 Current Status I! SSSV LANDING NIPPLE I 2191' . (OTIS){ 2.75" ID) 13-3/8", 68 ~f/ff, ~ ~ L-80, BTRS i~-v~, i [T3-1/2~', 9.2#/ft, 130R, NSCT, TUBING UBING ID: 2.992" CAPACITY: 0.0087 BBL/FT tCOMMENTS FROM RWO. CO~PLET,O. ~O WAS .O~ NIPPLES MAY BE C~RODEO W/L~ELE~ DAT~O Fill and Junk in 3-1/2" tailpipe blocking access to perforation. Junk fills 3-1/2" tailpipe up to bottom of lower production packer. 7" LINER MCMURRY GLM's (3.5"xl,5") (FMHO)(RK LATCHES) NO.I ~D(BK~') J TVD,~ J DEV7 -sl3079' ]2986' j8° 4J6303' j5494' ]48° 3J8532' J6990' J 41° 21s5 ' 177e6' 143° 3.5" 'X'NIPPLE ~ ~ - I 0, 23'i -- 9-518" PACKER J10,217'] 3,5" 'g' NIPPLE J 10,283 ;],, ~.~" TBe TA~L [ 10,294'~ (OTIS)( 2.992 "ID) ~ (ELMD) _ 9-5/8", 47#/fi, J10,528' J~ L-80, NSCC MARKER JOINT j 10,874'J PERFORATION SUMMARY REF LOG: $W$ - BHCS - 5-07-89 ~IZE sPF INTERVAL C =EN/SQZ'D 2 1/8" 10,996- 11022' OPEN/5-7-94 2 1/8" 11,o30-11,040' OPENI8-10-90 2 1/8" 11,052 - 11,088' " " 5" 11,088- 11,115' OPEN/5-11-89 5" 11,125- 11,135' " " 2 1/8" 11,135- 11,166' OPEN/8-10-90 05/07/89 5-7-94 4-4-95 OET ON DEPTH WITH BHC 05/0X7/89 OVER PERF. INTERVAL 4 4 PBTD111,359;'1 ~ ?", ~ #/., L-~o, BTRS j 11,400'[ ' DATE ! REV, BY COMMENTS ! IN1TIAL COMP, PAB ! ADD PERF I M. LINDER RWO-DOYON 16 11-13-00 ~ WSI Revised I ',,,~ LINER CORRSION VIDEO CAMERA 5/17/98 HARD BOTTOM CTMD 4/13/98 111052'] , PRUDHOE BAY UNIT WELL:Z-21(31-18-11-12), APl NO: 50-029-21938 SEC 18i TN 11N; RGE 12E BP Exploration (Ala§..k...a)~ ..... ~,: ~_.. ~..: ..... STATE OF ALASKA - ALASK-*-'~'~IL AND GAS CONSERVATION COM"%SSION c¢~r.~o''{ ,~,,-PLICATION FOR SUNDRY APPRO~, ,,.. 1. Type of Request: [] Abandon [] Suspend [] Plugging I-1 Time Extension [] Perforate [] Alter Casing [] Repair Well [] Pull Tubing [] Variance [] Other [] Change Approved Program [] Operation Shutdown [] Re-Enter Suspended Well [] Stimulate Plug Back for Sidetrack 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P.O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface ~' J~ '-'/' 719' SNL, 1669' EWL, SEC. 19, T11 N, R12E, UM At top of productive interval 4154' NSL, 2052' EWL, SEC. 18, T11N, R12E, UM At effective depth 4298' NSL, 2179' EWL, SEC. 18, T11 N, R12E, UM At total depth 4487' NSL, 2316' EWL, SEC. 18, T11 N, R12E, UM 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Structural Conductor Surface Intermediate Production Liner 11400 feet 9193 feet 5. Type of well: [] Development [] Exploratory [] Stratigraphic [] Service RECEIVED JUL 0 7 0it & G~s Co~s. O(~mis~ Plugs (measured) 11052 feet Junk (measured) Fill at 11052' (04/98) 6. Datum Elevation (DF or KB) KBE = 91.82' 7. Unit or Property Name Prudhoe Bay Unit 8. Well Number Z-21 9. Permit Nu~er 189-042 10. APl Number ./,' 50- 029-21938-00 11. Field and Pool Prudhoe Bay Field / Prudhoe Bay Pool 8934 feet ORIGINAL Length Size Cemented MD TVD 110' 20" 110' 110' 2657' 13-3/8" 3684 cu ft Permafrost 2657' 2657' 10528' 9-5/8" 2268 cuft Class 'G' 10528' 8557' 1141' 7" 378 cu ft Class 'G' 10259' - 11400' 8364' - 9193' Perforation depth: measured true vertical 10996'-11022', i1030'-11040', 11052'-11088', 11088'-11115', 11125'-11135', 11135'-11166'! 8894' - 8913', 8919'- 8926', 8934' - 8961', 8961' - 8980', 8988' - 8995', 8995' - 9018' Tubing (size, grade, and measured depth) 3-1/2", 9.2#, 13Cr to 10294' Packers and SSSV (type and measured depth) 9-5/8" TIW 'HBBP-T' packer at 10123'; 9-5/8" TIW packer at 10217'; HES 'XDB' SSSVLN at 2191' 13. Attachments [] Description Summary of Proposal [] Detailed Operations Program [] BOP Sketch 14. Estimated date for commencing operation July 7, 2000 16. If proBo_~sal was verbally approved Date Approved 15. Status of well classifications as: [] Oil [] Gas [] Suspended Service Contact Engineer Name/Number: ~i/I Isaacson, 564-5521 Prepared By Name/Number: Michael Williams, 564-4657 17. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed Dan Stone ~.---- '~'~o ~ Title Senior Drilling Engineer Date "'//12 ) ~ ~""' J'"~ r 'oval ..... Plug integrity '.~_ BOPTest ~. Location clearance__ I pp Mechanical lnte~,it~est ~bse~rm required 10-i,~ Approved by order of the Commissioj;~///~J/-'~-'"'"'"~~ ~.ogro'~eC[ ?~0~¥. Commissioner Form 10-403 Rev. 06/15/88 ---v-- /.,,~.,- / o,e't~f~ 0 Date Submit In Triplicate A re.d rv ces rilling To: From: Subject: Reference: BP Exploration / ARCO Alaska Inc. Blair Wondzell - AOGCC Date: June 30, 2000 William Isaacson Z-21 Application for Sundry Permit - P&A for Sidetrack Operations APl #50-029-21938 Sundry approval is requested for the proposed DS Z-21 perforation P&A. The well is currently shut-in due to high GOR production, resulting from a severely corroded liner which looks to be split near the OGOC. The poor mechanical condition of the liner limits cost effective wellwork or workover options, and therefore a sidetrack was proposed. The sidetrack will replace the current wellbore with a conventional wellbore approximately 300 feet from the original well, to recover the remaining Z-21 and surrounding area reserves. The sidetrack is currently scheduled for Nabors 9ES beginning around July 22®. The pre-rig work for this sidetrack is planned to begin as soon as the attached Application for Sundry is approved. Below is an outline of the proposed P&A and sidetrack operations. Pre-Riq Work: * Notify the field AOGCC representative with intent to plug and abandon * 1. RIH with CTU and clean out fill down to hard bottom at 11,052' MD (tagged with CTU 4/13/98). Based upon prior attempts, coil will not be able to get deeper than 11,052' MD, however, if possible continue to wash down to bottom perforation depth. Perform a cement P&A using 15.8 ppg class 'G' cement with adequate cement volume to fill the 7" liner from top of fill to ~10,575', plus squeeze 5 bbls to the perforations. Estimated minimum cement volume needed is 23.3 barrels. Use aggregate as required to aid in plugging the perfs. Circulate well clean above cement plug. NOTE: For AOGCC compliance the minimum top of cement must extend 100' above the top perforation. However, for Z-21A sidetrack operations the top cement should extend uphole to allow the cement plug to be used as a base for the bottom trip whipstock assembly. Do not bring cement above 10,550' MD and circulate well as clean as possible on top of the cement plug. 2. Rig up slickline, tag and document top of cement and drift tubing for upcoming tubing cut. 3. Liquid pack the 9-5/8" x 3-1/2" annulus to surface. Test the integrity of the cement plug and 9-5/8" casing by simultaneously pressure testing both the tubing and 9-5/8" annulus to 3000 psi for 30 minutes. Increase tubing pressure prior to the 9-5/8" annulus to avoid possibility of tubing collapse. 4. Cut the 3Y2" 13Cr-80 tubing at 10,119' MD (as per the 4/3/95 Tubing Summary, this is ~7' down into the 9.37' pup immediately on top of the TIW 'HB-BP-T' packer). Placement of this cut is critical. 5. Displace the well to clean seawater by circulating down tubing through the tubing cut. Continue to circulate until clean seawater returns to surface. Freeze protect top 2200' MD with diesel. The well should not be left with methanol as a freeze protect fluid, diesel only. 6. Test the FMC 9-5/8" mandrel packoff and tubing hanger seals to 5000 psi for 30 minutes. 7. Bleed tubing and annuli pressures to zero. Set a BPV in the tubing hanger and test from below to 1000 psi. Secure well. 8. Remove the well house and flowlines. If necessary, level the pad. Please provide total well preparation JUL 0 7 cu(. 1 0il & Gas CODS. 00tarnished Rig Operations: 1. MIRU Nabors 9ES. 2. Circulate out freeze protection and displace well to seawater. Set TWC. 3. Nipple down tree. Nipple up and test BOPE. 4. Pull and lay down 3-1/2" tubing from E-line cut and above. 5. MU 9-5/8" packer milling assembly and RIH on 4" DP. Mill the upper TIW 'HB-BP-T' permanent packer. POOH. PU spear for 3-1/2" tubing and RIH. Latch into 3-1/2" tubing and fish remaining completion equipment from above the second TIW packer / slickstick assembly. PU overshot for slickstick and RIH. Latch slickstick and rotate latch assembly free from packer. POOH with slickstick assembly. PU 9-5/8" packer mill assembly with hydraulic PRT and RIH. Mill the lower TIW permanent packer until it drops. Recover tailpipe assembly using PRT and millout extension below packer. POOH and lay down all remaining compleiton equipment. MU 6" bit on window milling assembly and RIH to top of cement in 7" liner. Dress top of cement as required and use MWD GR to correlate top of cement to planned kick-off depth. 10. RIH with 7" Baker bottom-trip anchor whipstock assembly (equipped with spacer tube as required to position whipstock at planned KOP and set whipstock on cement plug). Orient whipstock as desired and set on cement plug. Mill window in 7" casing at -10,530' MD. POOH. 11. Kick-off and drill the 6-1/8" production section as per directional plan to an estimated TD of 11,246' MD (9144' TVD). RU E-line and run GR/Res/Neu/Den/Sonic logs to TD. Run and cement a 4 Y=", 12.6# solid production liner throughout the 6-1/8" wellbore, bringing the liner top back into the 9-5/8" casing. Displace well to clean seawater. POOH LD DP. Test the 4-1/2" and 9-5/8" casing from the 4-1/2" landing collar to surface to 3000 psi for 30 minutes.. Run 3-1/2", 12.6# 13Cr-80 completion tying into the 4-1/2" liner top. Set packer and test the tubing to 3500 psi and annulus to 3000 psi for 30 minutes. Nipple down the BOPE. Nipple up and test the tree to 5000 psi. Freeze protect the well to -2200' and secure the well. Rig down and move off. . . . . 12. 13. 14. 15. 16. 17. 18. 19. Post-Ri~l Work: 1. MIRU slickline. Pull the ball and rod / RHC plug from 'X' nipple below the new production packer. Install gas lift valves. 2. Perforate -75' of Zone 4 with E-line conveyed guns. Estimated Pre-rig Start Date: Estimated Spud Date: William Isaacson Operations Drilling Engineer 564-5521 07/10/00 07/22/00 Cons. Oorn~s.~ott TREE: 4" CIW WELLHEAD: FMC ACTUATOR: BAKER 13-3/8", 68 #/ft, I ~)~.-/,I L-80, BTRS IKOP: 2900' MAX ANGLE: 53° @ 7400' 3-1/2", 9.2#/ft, 13CR, NSCT, TUBING TUBING ID: 2.992" CAPACITY: 0.0087 BBL/FT COMMENTS FROM RWO. NOTE: LOWER TIW PACKER IS FROM ORIGINAL COMPLETION AND WAS NOT RETREIVED DURING THE RWO. THE LOWER TAILPIPE AND TWO "X" NIPPLES MAY BE CORRODED AND LEAK. SEE W/L TELEX DATED 2/27/95. TOPOF [10,260, l J 7" LINER 9-5/8", 47#/ft, [10,528, I ~ L-80, NSCC Z-21 Current Status KB. ELEV = 91.82' BF. ELEV = 57.42' SSSVLANDING N~PPLE I 2191' I (OTIS)( 2.75" ID) IN5 MCMURRY GLM's (3.5"xl.5") (FMHO)(RK LATCHES) O'IMD(BKB) I TVDss I DEV. I3079' 12986', I s° 4163o3' 15494, 148° 318532' 1699o 141° 219599' 17786' 143° , I O., I 3.5" 'X'NIPPLE -- (OTIS) (2.75" ~D) 110~111'1 9-5/8" TIW PACKER (HBBP-T)(3.92" iD) I 10,123' I 3.5" 'X' NIPPLE ~ (OTIS) ( 2.75" ID) DUMMY SEAL ASSY. [ j w/o SEALS 12' LONG 10,195' 9-5/8" PACKER (TIW)( 4.00" ID) J10,217' J 3.5" 'X' NIPPLE ~ (OTIS) (2.75" ID) J 10,261'J 3.5" 'X' NIPPLE (OTIS) ( 2.75" ID) J 10,283' J 3.5"TBG TAIL 110,294'I (OTIS)( 2.992 "ID) (ELMD) 110,294' J MARKER JOINT 1 10,874'I PERFORATION SUMMARY REF LOG: SWS - BHCS - 5-07-89 SIZE 21/8" 2 1/8" 2 1/8" 5" 5" SPF 6 4 4 4 4 INTERVAL 0 PEN/SQZ'D 10,996 - 11022' 11,030 - 11,040' 11,052 - 11,088' 11,088- 11,115' 11,125- 11,135' OPEN/5-7-94 OPEN/8-10-90 . OPEN/5-11-89 . LINER CORRSION VIDEO CAMERA 5/17/98 2 1/8" 4 11,135- 11,166' OPEN/8-10-90 CET ON DEPTH WITH BHC 05/07/89 OVER PERF. INTERVAL PBTD I 11,359' I -- 7", 26 #/ft, L-80, BTRS I 11,400' I -- DATE 05~07/89 5-7-94 4-4-95 4-13-98 REV. BY COMMENTS INITIAL COMP. PAB ADD PERF M. LINDER RWO-DOYON 16 JTP :{evised JUL 0 Oil & Gas C~$. PRUDHOE BAY UNIT WE L L:Z-21 (31-18-11-12) APl NO: 50-029-21938 SEC 18~ TN 11N~ RGE 12E BP Exploration (Alaska) HARD BOTTOM I 11052'I CTMD 4/13/98 TREE: 4" CIW WELLHEAD: FMC ACTUATOR: BAKER 13-318", 68#/ft,~ ~12657'1 L-80, BTRS 3-1/2", 9.2#/ft,13CR, NSCT, TUBING TUBING ID: 2.992" CAPACITY: 0.0087 BBL/FT Proposed Pre-Rig(oTis)(SSSV LANDING 2.75" ,D) NIPPLE BF.KB' ELEV = 91.82'ELEV, j 21 = 57.42'91, MCMURRY GLM's (3.5"xl.5") (FMHO)(RK LATCHES) qO. MD(BKB) I TVDss I DEV. 5 3079' 12986' I 8° 63o3' 1 4 4',o oso ' I4ao 2 9599' 17786' I 43° 999 , Pre-Rig 3-1/2" tubing cut at -10,119' MD T OPOF 110,260'1 7" LINER 9-5/8", 47#/ft, 110,528, I ~ L-80, NSCC Top of Pre-Rig P&A Cement at -10,575' MD 3.5" 'X'NIPPLE (OTIS) (2.75" ID) 9-5/8" TIW PACKER (HBBP-T)(3.92" ID) 3.5" 'X' NIPPLE (OTIS) ( 2.75" ID) DUMMY SEAL ASSY. W/O SEALS 12' LONG -- 9-5/8" PACKER (TIW)( 4.00" ID) 3.5" 'X' NIPPLE (OTIS) (2.75" ID) 3.5" 'X' NIPPLE (OTIS) ( 2.75" ID) 3.5" TBG TAIL (OTIS)( 2.992 "ID) (ELMD) MARKER JOINT 10,111'I 10~123' I 10,180'I 10,195'I 10,217' I 10~261' 10,283' 10,294' 10~294'I PERFORATION SUMMARY REF LOG: SWS - BHCS - 5-07-89 SIZE 2 1/8" 2 1/8" 2 1/8" 5' 5" ~F INTERVAL C 10,996- 11022' 11,030 - 11,040' 11,052 - 11,088' 11,088- 11,115' 11,125- 11,135' PEN/SQZ'D OPEN/5-7-94 OPEN/8-10-90 . OPEN/5-11-89 , . LINER CORRSION VIDEO CAMERA 5/17/98 HARD BOTTOM CTMD 4/13/98 2 1/8" 11,135 - 11,166' OPEN/8-10-90 CET ON DEPTH WITH BHC 05/07/89 OVER PERF. INTERVAL PBTD I 11,359' 7", 26 #/ft, L-80, BTRS I 11,400' I DATE 05/07/89 5-7-94 4-4-95 4-13-98 REV. BY COMMENTS INITIAL COMP. PAB ADD PERF VI. LINDER RWO-DOYON 16 JTP :levised JUL 0 daska 0il & Gas C0~s. PRUDHOE BAY UNIT 11052'I SEC 18i TN 11N~ RGE 12E BP Exploration (Alaska) WE LL: Z-21 (31-18-11-12) APl NO: 50-029-21938 TREE: 4-1/16" - 5M CIW Chrome WELLHEAD: 13 5/8" - 5M FMC Z-21A Proposed Completion Base Flange Elevation = 57.42' Nabors 7ES RKB = 84.12' 3-1/2" 'X' Landing Nipple with 2.813' seal bore. I 2150' 13-3/8", 68 Cf/fi, L-80, BTC 3-1/2' Gas Lift Mandrels with handling pups installed. GAS LIFT MANDRELS MD - ! 'SiZe 1 TBD 2 TBD 3 TBD 4 TBD 5 TBD 1" 1" 1" 1" 1-1/2" Valve Type RP Shear DV DV DV DV JUL 0 7 2,1~:!: ) 7" LinerTop 110'260'1 9-5/8", 47 Cf/fi, L80, NSCC 110,528'I 3-1/2" 9.2# 13Cr-80, NSCT Tubing (rerun what was pulled from the well) 3-1/2" 'X' Landing Nipple with 2.813" seal bore. 9-5/8' x 4-1/2" Baker 'S-3' Production Packer with crossover pups to 3-1/2" 3-1/2" 'XN' Landing Nipple with 2.813" seal bore and 2.75' No-Go ID. 3-1/2" WireLine Entry Guide spaced-out into 4-1/2" liner tie-back sleeve. +/.10,050,I BAKER 7" x 9-5/8' Liner Tie Back Sleeve ZXP Liner Top Packer 'Flex Lock' Hydraulic Liner Hanger Crossover to 4-1/2" 13Cr-80 NSCT Window Milled from Whipstock Top of Window at +/-10,530' MD Top Cement P&A Plug dressed to +/-10,590' MD Perforations from 10,996' to 11,166' Top Hard Fill tagged at 11,052' MD Plug Back Depth I +/-11,160' I 4-1/2" 12.6 Cf/fi, 13Cr-80, NSCT I +/'11,246' I 7", 26 Cf/fi, L80, BTC-Mod I 11,400' Date Rev By Comments 06/30/00 WSI Proposed Completion PRUDHOE BAY UNIT WELL: Z-21A APl NO: 50-029-21938-01 Shared Services Drilling STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown Stimulate__ Plugging__ Pull tubing × Alter casing __ Repair well __ Perforate__ Other__ 2. Name of Operator BP Exploration 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 719' SNL, 1669' EWL, SEC. 19, T11N, R12E At top of productive interval 1126' SNL, 2054' EWL, SEC. 18, T11N, R12E At effective depth 829' SNL, 2293' EWL, SEC. 18, T11N, R12E At total depth 793' SNL, 2317' EWL, SEC. 18, T11N, R12E 5. Type of Well: Development X Exploratory __ Stratigraphic Service __ 6. Datum elevation (DF or KB) KBE = 91.82 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-21 (31-18-11-12) 9. Permit number/approval number 89-42/Conservation order #258 10. APl number 50- 029-21938 11. Field/Pool Prudhoe Bay Field/Oil Pool 12. Present well condition summary Total depth: measured true vertical 11400 feet Plugs (measured) 9193 feet Effective depth: measured true vertical 11334 feet 9144 feet Junk (measured) fill @ 11334' MD (9/89) Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: measured Length true vertical Tubing (size, grade, and measured depth) Size Cemented Measured depth 3-1/2", 13CR80 tubing to 10209' MD True vertical depth 0il & Gas Cons. Commission Anchora ~ Packers and SSSV (type and measured depth) 9-5/8" TIW "HBBP-T" packer @ 10123' MD; HES "XDB" SVLN SSSV @ 2191' MD 13. Stimulation or Cement squeeze summary Intervals treated (measured) Treatment description including volumes used and final pressure 14. Prior to well operation Subsequent to operation Representative Daily Average Production or Injection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure 15. Attachments Copies of Logs and Surveys run __ Daily Report of Well Operations x 16. Status of well classification as: Oil x Gas Suspended Service 17, I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed ?J~f ~-~-.~ Title Drillin~lEn~lineerSupervisor Form 10-404 Rev 06/15/8E~ (~J ' Date SUBMIT IN DUPLICATE BP/AAI SHARED SERVICE DAILY OPERATION ~ PAGE: 1 WELL: Z-21 BOROUGH: NORTH SLOPE UNIT: PRUDHOE BAY FIELD: PRUDHOE BAY LEASE: API: 50- PERMIT: APPROVAL: ACCEPT: SPUD: RELEASE: OPERATION: DRLG RIG: DOYON 16 WO/C RIG: DOYON 16 03/28/95 (1) TD: 0 PB: 0 MOVING TO DRILL SITE MW: 0.0 MOVE RIG F/DS 4 T/ Z PAD. APPROX 3 MILES F/Z-PAD @ 6AM 3/28. 03/29/95 (2) TD:ll400 PB:11398 03/30/95 (3) TD:ll400 PB:11398 TESTING BOPE MW: 0.0 COMPLETED MOVING RIG F/DS 4 T/Z PAD. REMOVED BOOSTER WHEELS, RAISED DERRICK, SPOTTED RIG OVER WELL Z-21. SHIMMED RIG. SPOTTED SLOP TANK. RU T/OPERATE. RIG ACCEPTED @13:00 HRS ON 3/28. STARTED TAKING ON 8.8 PPG BRINE IN PITS WHILE SPOTTED/BERMED/FILLED TIGER TANKS. RU T/CIRC. HELD SAFETY MEETING. RU LUBRICATOR. PULLED BPV. RD LUBRICATOR. HELD SPILL & FIRE DRILLS. CIRC OUT DIESEL FREEZE PROTECTION THRU OPEN CHOKE DIRECTLY INTO THE VAC TRUCK DUE T/HIGH WINDS. CIRC HOLE VOL. MONITORED WELL. STATIC. SET TIW 2-WAY CHECK VALVE & TEST T/100PSI. OK. ND X-MAS TREE, ADAPTOR FLANGE, TESTED PACK-OFF T/5000PSI. DID NOT PASS ACHIEVE TEST. NU BOPE. MODIFIED THE BELL NIPPLE, FLOW LINE. HELD H2S DRILL. TESTED BOPE T/250/5000PSI. WITNESS WAIVED BY J. SPAULDING OF THE AOGCC. POOH LD COMP STRING MW: 0.0 COMPLETED TESTING BOPE T/250/5000PSI. ANNULAR T/250/2500PSI. CHANGED OUT ONE, REBUILT ONE CHOKE MANIFOLD VALVE. WITNESS OF TEST WAS WAIVED BY AOGCC REP: JOHN SPAULDING. CLEARED RIG FLOOR. RU LUBRICATOR, PULLED TWC VALVE. RD LUBRICATOR. MONITORED WELL. STATIC. MU LANDING JT. BOLDS. PU HANGER. FREE @96,000 LBS. PU WT IS 82,000 LBS. CIRC HOLE VOL. NO GAS NOTED ON BTTMS UP. MONITORED WELL. STATIC. PULLED HANGER T/FLOOR. LD. POOH LD 3.5" TDS R2 TBG T/SSSV. LD SSSV. RD HES CONTROL LINE SPOOLING EQUIPMENT. OD OF TBG WAS BADLY COATED W/ASPHALT TYPE SUBSTANCE. DIFFUCULT T/HANDLE, CLEAN. NO EXCESSIVE CORROSION NOTED T/SSSV. MU 9-5/8" BAKER STORM PAKER T/STRING. RIH. SET PACKER @ 29' RT. TESTED T/500 PSI. BLED OFF 13-5/8" X 9-5/8" ANNULUS. CHANGED OUT PACK-OFF. TESTED PACKOFF T/5000PSI. GOOD TEST. RECOVERED PACKER, STRING, LD PACKER. CONTINUE POOH LAYING DOWN THE COMPLETION STRING. WELL : Z-21 OPERATION: ~RIG : DOYON 16 PAGE: 2 03/31/95 (4) TD:ll400 PB:11398 04/01/95 (5) TD:l1400 PB:11398 04/02/95 (6) TD:ll400 PB:11398 POOH W/OVERSHOT ASSY MW: 0.0 COMPLETED POOH LD 3.5" COMPLETION STRING. RECOVERED ALL COMPONENTS DOWN T/CUT @10163(ELM) 316 FULL JTS OF 3.5" TBG, 6 GLM ASSY, SSSV ASSY, 34 CLAMPS, 4 BANDS OF THE TBG WERE BADLY CORRODED. WORSE W/DEPTH. OD OF TBG CLEANED UP W/DEPTH. AFTER 100+ JTS PULLED, THERE WAS LITTLE BUILD UP. RD TBG HANDLING EQUIP. CLEANED FLOOR AREA. RAN WEAR BUSHING. LOADED PIPE SHED W/5" DP, 6-1/4" DC. PU 8-1/8" OVERSHOT ASSY W/3.5" BASKET GRAPPLE. MU BHA. RIH PU 5" DP T/TOF @ 10164 (DPM). MU KELLY. WASHED OVER FISH F/10164 T/10174. ENGAGED FISH. PU T/85000LBS. OVERPULL. JARRED FISH LOOSE. OVERSHOT ON SLICK. SLICK PINNED @85000 LBS ON PU. CIRC BU. NO GAS NOTED ON BU/MONITORED WELL. STATIC. STARTING T/POOH W/8-1/8" O/S ASSY. RIH W/WASH PIPE MW: 0.0 COMPLETED POOH W/8-1/8" OVERSHOT ASSY. RELEASED OS F/FISH. LD FISH. RECOVERED CUTOFF SECTION OF 3.5" TBG, "X" NIPPLE, 10' PUP JT. TBG COLLAR OFF THE 3.5" PUP JT WHICH FORMS THE TOP OF THE PCKR OVERSHOT ASSY. THREADS SHEARED OFF IN THE BOX. BLACK, SCALLY CRUD WAS PACKED IN THE 8-1/8" OS GRAPPLE & GUIDE ETC. CLEANED & REDRESSED OS W/3.5" BASKET GRAPPLE. MU 8-18" OS. MU BHA. RIH T/TOF @ 10197. MU KELLY. WORKED OS OVER FISH. PU T/ABOUT 2000 LB WT INCREASE. RIH W/PUMP ON. HAD PRESS INCREASE. PU. CBU. GAS ON BU. CBU THRU CHOKE. MONITORED THE WELL, STATIC. POOH W/8-1/8" OS ASSY. COLD CUT XO PUP JT. LD OS. RECOVERED ALL REMAINING PACKER OS ASSY. HELD SPILL, FIRE & H2S DRILLS. REVIEWED PROCEDURES F/DRILLS. PU 8-1/8" WASH PIPE W/SHOE. MU 9-5/8" CASG SCRAPER. MU BHA & RIH. POOH W/TEST PKR MW: 0.0 COMPLETED RIH W/8-1/8 WASH PIPE, 9-5/8" CASG SCRAPER ASSY T/APPROX TOP OF SLICK STICK @ 10209. MU KELLY. WORKED OVER SLICK STICK. WASHED DOWN T/BTTM OF ASSY @ 10221. CIRC ON BTTM. WORKED WASH PIPE F/10209 T/10221. PUMPED HI VIS SWEEP. CIRC OUT. RECOVERED BLACK SCALLY CRUD ON BU. WELL WAS STATIC. POOH W/WASH PIPE, SCRAPER ASSY. LD ALL BHA COMPNENTS. CLEANED FLOOR AREA. PU 9-5/8" BAKER TEST PKR. RIH ON 5" DP T/10169. SET PKR @ 10169. TESTED CSG T/3500PSI/30 MIN. GOOD TEST. APPROX 20 PSI BLEED OFF OVER PERIOD. RELEASED TEST PACKER. CBU. MONITOR THE WELL. STATIC. POOH W/TEST PCKR. RACKED BACK 50 STNDS OF 5" DP. CONT. POOH W/TEST PKR, LD 5" DP. RECEIVED MAY 25 1995 Alaska Oil & Gas Cons. Commission Anchora?, WELL : Z-21 OPERATION: RIG : DOYON 16 PAGE: 3 04/03/95 (7) TD:l1400 PB:11398 04/04/95 (8) TD:l1400 PB:11398 RUN COMPLETION STRING MW: 0.0 COMPLETED POOH W/TEST PKR. LD 5" DP. LD PKR. PULLED WEAR BUSHING. RU T/RUN COMPLETION. HELD SFTY MTG. RAN 3.5" 9.2# 13CR80 NSCT R2 COMPLETION STRING T/SSSV. MU SSSV. HU CONTROL LINES. TESTED T/5000. GOOD TEST. CONTINUE RIH W/3.5" COMPLETION STRING. HAVE RUN 294 OUT OF 325 JOINTS OF 3.5" TBG RIG RELEASED MW: 0.0 CON'T RIH W/3.5" COMPLETION STRING T/APPROX TBG HNGR DEPTH. MU CIRC HD, LINES ON SPACE OUT JT. LOWERED STRING OVER EXISTING SLICK STICK W/PUMP ON. GOOD PRESS INDICATION O/S OVER SLICK STICK. LOWERED STRING T/SWALLOW ENTIRE 12' OF STICK. O/S BOTTOMED OUT AFTER 12'. PU 2' & SPACE OUT. MU TBG HANGER, LNDG JT. T/STRING. HU CL. TESTED LINES T/5000PSI. OK. CIRC HOLE T/INHIBITED 8.8PPG BRINE. LANDED HANGER IN TBG SPOOL. RILDS. LD LNDG JT. SET BPV. TEST T/150PSI F/BTTM. RD COMPLETION RUNNING EQUIP. ND BOPE. NU ADPTR FLNG, XMAS TREE, HU CL. TESTED EACH COMPONENT T/5000PSI. GOOD TESTS. RU LUBRICATOR, PULL BPV. RD LUBRICATOR. DROPPED BALL, ROD. PRESS DOWN TBG T/SET PACKER, TEST TBG. REPAIRED SURFACE LEAK. HAD INDICATION PRIOR T/LEAK THAT TIW 9.625" X 4.5" PKR SHEARED @1700PSI. PKR SET @ 10123. CON'T ATTEMPT T/TEST TBG. PRESS BLEEDING OFF @ RATE OF 160PSI PER MIN. INSPECTED SURFACE LINES. NO FURTHER LEAKS ARE APPARENT. NO RETURNS NOTED ON ANNULUS. CON'T HOLDING PRESS ON TBG WHILE PRESSURING ANNULUS T/3700PSI/30 MIN. GOOD TEST. SUSPECT RHC PLUG, SEAT OR BALL. BLEED OFF PRESS. PRESS ANNUL T/2200PSI T/SHEAR OUT RP VALVE. FREEZE PROTECT WELL T/2000 W/DIESEL. SECURE THE WELL & LOCATION & RELEASE @ 0400 ON 4/4/95 SIGNATURE: (drilling superintendent) DATE: RECEIVED MAY 25 1995 Alaska 0il & Gas Cons. Commission Anchorage STATE Of ALASKA ,-"'"-"~KA OIL AND GAS CONSERVATION COMMIr'-"3N REPOR'I OF SUNDRY WELL O , RATIONS 1. Operations performed: Operation shutdown Stimulate Plugging Pull tubing Alter casing Repair well Perforate X Other × 2. Name of Operator BP Exploration (Alaska)/nc. 3. Address P. 0. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 719' SNL, 1669' EWL, SEC. 19, T11N, R12E, UPM At top of productive interval 1126' SNL, 2054' EWL, SEC. 18, T11N, R12E, UPM At effective depth 829' SNL, 2293' EWL, SEC. 18, T11N, R12E, UPM At total depth 793' SNL, 2317' EWL, SEC. 18, T11N, R12E, UPM 5. Type of Well: Development X 'Exploratory Stratigraphic Service 6. Datum elevation (DF or KB) KBE= 91.82 AMSL feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-21 (31-18-11-12) PBU 9. Permit number/approval number 89-42 / 94-286 10. APl number 50- 029-21938 11. Field/Pool Prudhoe Oil Pool 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Length Structural -- Conductor 110 S u rf ac e 2622 Intermediate 10493 Production -- Liner 1141 Perforation depth: measured 11400 feet BKB 9193 feet 11334 feet BKB 9144 feet Plugs (measured) Junk (measured) fill at 11398'MD (01/91) Size Cemented Measured depth True vertical depth BKB 20 145 145 13 3/8 3684 c.f. 2657 2657 9 5/8 2268 c.f. 10528 8557 7 378 c.f. 10259-11400 8364-9193 11088' - 11115', 11125' - 11135', 11030'-11040', 11052'-11088', 11135'-11166' true vertical subsea 8869'-8926' (Five intervals) Tubing (size, grade, and measured depth) 3 1/2"L-80 to 10218'with 3 1/2" tailpipe to 10295' Packers and SSSV (type and measured depth) 9 5/8" TIWpacker at 10218~ 3 1/2" SSSV at 2093' RECEIVED 13. Stimulation or cement squeeze summary see attachment Intervals treated (measured) Treatment description including volumes used and final pressure MAY - 5 1995 A!aska 0il & Gas Cons. Commission Anchora ~ 14. Prior to well operation Subsequent to operation Representative Daily Average Production or Injection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure 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 c.ertify that the.,fomgoing i.s true and correct to the best of my knowledge. Signed ~..,~,~' ~,,~ ~//'~' Title Senior TechnicalAssistant II Form 10-404 Rev 06/15/8~ Date ..~//~,~..5 SUBMIT IN DUPLICATE WELL Z-21(31-18-11-12) Addperf Permit #94-286 5/07/94 The following additional interval were perforated using 2 1/8" guns, 6 SPF, 0° orientation and 0° phasing. 10996'-l1022'MD Z-21 successfully re-ran new tubing string with Rig Doyon 16 on 4/4/95. Annulus pressure tested to 3700 psi. RECEIVED MAY - 5 1995 Alaska Oil & Gas Cons. Commission Anch0ra ~. LARRY GRANT Attn. ALASKA OIL + GAS CONSERVATION 3001 PORCUPINE DRIVE ANCHORAGE AK, 99501. Date: 28 March 1995 Transmittal of Data Sent by: MAIL Dear Sir/Madam, Enclosed, please find the data as described below: WELL DESCRIPTION 1 PLS/STP FINAL BL+RF 1 PLS FINAL BL+RF 1 CCL FINAL BL+RF Run ~ 1 Run # 1 · Run # 1 ECC No. 5603.06 5718.06 5780.06 Please sign and return to: Attn. Rodney D. Paulson Atlas Wireline Services 5600 B Street Suite 201 Anchorage, AK 99518 Or FAX to (907) 563-7803 Received by: Date: Please sign and return to; Petrotechnical Data ~= + BP Exoloration (Alaska) In~ ~at~ "-- ~' '~ ~._1~0 ..... ., ~ .. ~as~ Oil & Gas Cons. Commission ~chomoe 1. Type of Request: STATE OF ALASKA ALAS?-'NL AND GAS CONSERVATION COMMISSK' APPLICA'I,,JN FOR SUNDRY APPnOVALS Abandon __ Suspend __ Alter casing __ Repair well __ Change approved program 5. Type of Well: Development X Exploratory __ Stratigraphic __ Serv~e Operation Shutdown __ Re-enter suspended well Plugging __ Time extension .__ Stimulate __ Pull tubing __ Variance X Perforate __ Other__ 6. Datum elevation (DF or KB) KBE = 91.82 AMSL 7. Unit or Property name Prudhoe Bay Unit 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 719'SNL, 1669'EWL, SEC. 19, T11N, R12E, UPM At top of productive interval 1126' SNL, 2054' EWL, SEC. 18, T11N, R12E, UPM At effective depth 829'SNL, 2293' EWL, SEC. 18, T11N, R12E, UPM At total depth 793' SNL, 2317' EWL, SEC. 18, T11N, R12E, UPM ORIGINAL Well number Z-21 (31-18-11-12) PBU 9. Permit number 89-42 10. APl number 50- 029-21938 11. Field/Pool Prudhoe Oil Pool feet 12. Present well condition summary Total depth: measured true vertical 11400 feet BKB 9193 feet Effective depth: measured 11334 feet true vertical BKB 9144 feet Plugs (measured) Junk (measured) fill at 11398' MD (01/91) Casing Length Size Structural -- Conductor 110 20 Surface 2622 13 3/8 Intermediate 10493 9 5/8 Production -- Liner 1141 7 Perforation depth: Cemented 3684 c.f. 2268 c.f. Measured depth 145 2657 10528 378 c.f. 10259-11400 measured 11088'-11115~ 11125'-11135~11030c11040~11052'-11088~11135c11166' true vertical subsea 8869'-8926' (Five intervals) Tubing (size, grade, and measured depth) 3 1/2"L-80 to 10218' with 3 1/2"tailpipe to 10295' True vertical depth BKB 145 2657 8557 8364-9193 Packers and SSSV (type and measured depth) 9 5/8" TlW packer at 10218'; 3 1/2" SSSV at 2093' RECEIVED OCT -~ ',994 Aiaska Oil & Gas Corm. Commissi Anchor~.~e 13. Attachments Description summary of proposal × Detailed operations program __ BOP sketch 14. Estimated date for commencing operation J 15. Status of well classification as: 16. If proposal was verbally approved ] Oil X Gas __ Name of approver .~ Date approved Service 17. I hereby c,~t-i~y that the,,fc~r~going i~rue and correct to the best of my knowledge. · / /i' -/i/ i: - Signed /,,___ ./~'~-- ~ cz/b>{: {/~%./~),,.V, ~.'-:' Title Supe,isor Gravi~ Drainage FOR COMMISSION USE ONLY Suspended Conditions of approval: Notify Commission so representative may witness Plug integrity ~ BOP Test ~ Location clearance Date Mechanical Integrity Test Subsequent form required 10- /,j ~ Original Signed By I Approval No.? ?,.. 2., ~ ~' Approved by order of the Commissi~vid W, Johnston Commissioner Date ! ~/,'F0£9 ? I SUBMIT IN{ TRII~LICATE Form 10-403 Rev 06/15/88 Approved Copy Returned PROPOSED REMEDIAL OPERATIONS FOR PRUDHOE BAY WELL Z-21 (31- 18-11-12) TO ADDRESS THE LOSS OF TUBING INTEGRITY DUE TO SEVERE CORROSION ACROSS THE TUBING/CASING PACKER AND TAILPIPE. A. OBTAIN A PRODUCTION VARIANCE FROM THE AOGCC. B. MOVE WORKOVER RIG ONTO WELL Z-21 AND PULL CORRODED PRODUCTION TUBING & PACKER. C. RUN NEW PRODUCTION TUBING & PACKER INTO Z-21 WITH WORKOVER RIG. D. NOTIFY AOGCC OF THE RETURN TO NORMAL OPERATING CONDITIONS. -MARK SAUVE (564-5407) W & Z-PAD ENGINEER, PRUDHOE BAY OPERATIONS ENGINEERING Gas Cons. Commissim'~ Anchor~,?, Please sign ana r~uul-~ -~. Petroteohnioal Data Ce--~er BP Exploration (Alaska, Inc 900 East Benson Boulevard Anchorage, Alaska 99508 Received by . ~ +=~8~LASKA OIL & GAS CONSERVATION COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: 20 July 1994 RE: ~, Transmittal of Data Sent by: ANCHORAGE EXPRS Dear. Sir/Madam, Enclosed, please find the data as described below: WELL # DESCRIPTION R-16 (24-28-12-13) 1 GR/JEWL. FINAL BL I~LS STP FINAL BL ~ ~R/JE~. RF SEPZA /T P~.S sTP RF SEPIa H-13 (22-11-13) /~CL/PERF FINAL BL 1 ~CL/PERF RF SEPIA l~~PL S LE~KDET FINAL BL S LEAKDET RF SEPIA ~~ W-08 (11-26-11-12) ..FPFC/PERF FINAL BL 1 PFC/PERF RF SEPIA %~~ W-27 (32-20-11-12) ~.~ PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA ~Sq x-01 (14-5-10-14) /1 PLS LEAKDET FINAL BL 1 PLS LEAK. RF SEPIA ECC No. Run # 1 Run # 1 Run # 1 Run # 1- Run # 1 Run # 1 3889.05 6090.02 Run # 1 Run # 1 5780.05 Run # 1 Run # 1 4117.05 Run # 1 Run # 1 4529.02 Run # 1 Run ~ 1 3986.02 RECEIVEb Please sign and return to: Atlas Wireline Services 5600 B Street Suite 201 Anchorage, AK 99518 Attn. Rodney D. Paulson Received by: Alaska Oil & ~as Cons. C°rnrnissiorl Anchorage Date: ALASKA OIL & GAS CONSERVATION COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: 15 May 1994 Transmittal of Data Sent by: U.S. MAIL Dear Sir/Madam, Enclosed, please find the data as described below: WELL ~ DESCRIPTION E-02 (34-06-11-14) ~- 4L Z-21 C-07 (31-24-11-13) 5q~-25 ~-32 (42-20-11-13) ~ PLS/SPNR FINAL BL 1 PLS/SPNR RF SEPIA ~ PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA ~ DTEMP/GR FINAL BL 1 DTEMP/GR RF SEPIA / PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA /1 PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA ~.-~H-26 (23-16-11-13) ~--IOL Z-12 (21-30-11-12) ,-~ PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA '~ PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA /1 PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA /1 PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA Cont/ ECC No. Run # 1 Run ~ 1 5938.01 Run # 1 Run # 1 5780.04 Run # 1 Run ~ 1 4166.03 Run # 1 Run ~ 1 3838.02 Run # 1 Run # 1 6170.03 Run # 1 Run # 1 4892.01 Run # 1 Run # 1 4031.02 Run # 1 Run # 1 6083.07 Run # 1 Run # 1 2187.04 ALASKA OIL & GAS CONSERVATION COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: 7 February 1994 RE: Transmittal of Data ECC #: 5780.03 Data: PL Dear Sir/Madam, · Reference: BP Z-21 ~"~Z PRUDHOE BAY NORTH SLOPE, AK Enclosed, please find the data as described below: Prints/Films: 1 1 Sent by U.S. MAIL PLS LEAK. FINAL BL PLS~LEAK.~ FINAL RF Run # 1 Run # 1 Please sign and return to: Atlas Wireline Services Petrophysical Services 5600 B Street Suite 201 Anchorage, AK 99518 Attn. Rodney D. Paulson Received by: Date: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown Stimulate X Plugging Perforate Pull tubing Alter casing Repair well Other 2. Name of Operator 5. Type of Well: 6. Datum elevation (DF or KB)"~/.,,- BP Exploration (Alaska) Inc. KBE = 91.82 AMSL~feet 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 719'SNL, 1669' EWL, SEC. 19, T11N, R12E, UPM At top of productive interval 1126' SNL, 2054' EWL, SEC. 18, T11N, R12E, UPM At effective depth 829' SNL, 2293' EWL, SEC. 18, T11N, R12E, UPM At total depth 793' SNL, 2317' EWL, SEC. 18, T11N, R12E, UPM 12. Present well condition summary Total depth: Effective depth: Development X Exploratory Stratigraphic 7. Unit or Property name Service Prudhoe Bay Unit 8. Well number Z-21 (31-18-11-12) PBU 9. Permit number/approval number 89-42/ 10. APl number 50- 029-21938 11. Field/Pool Prudhoe Oil Pool measured 11400feet Plugs (measured) true vertical BKB 9193feet measured 11334feet Junk (measured) true vertical BKB 9144feet fill at 11398'MD (01/91) Casing Length Size Cemented Measured depth Structural -- Conductor 110 20 145 Surface 2622 13 3/8 3684 c.f. 2657 Intermediate 10493 9 5/8 2268 c.f. 10528 Production -- Liner 1141 7 378 c.f. 10259-11400 Perforation depth: measured 11088'- 11115', 11125'- 11135',11030'-11040',11052'-11088',11135'-11166' True vertical depth BKB 145 2657 8557 8364-9193 true vertical subsea 8869'-8926' (Five intervals) Tubing (size, grade, and measured depth) 3 1/2" L-80 to 10218' with 3 1/2" tailpipe to 10295' Packers and SSSV (type and measured depth) 9 5/8" TIW packer at 10218'; 3 1/2" SSSV at 2093' ECEIVED 13. Stimulation or cement squeeze summary see attachment Intervals treated (measured) Treatment description including volumes used and final pressure M AR 1 5 t99 Alaska 0il & Gas Cons. C0mmiss[o~ Anchorage 14. Prior to well operation Subsequent to operation Re.Dresentative Daily Average Production or Iniection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure 950 411 109 0 1630 2033 617 825 Tubing Pressure 260 373 15. Attachments 16. Status of well classification as: Copies of Logs and Surveys run Daily Report of Well Operations Oil X Gas Suspended. 17. I hereby certify that the foregoin(~ is true and correct to the best of my knowledge. Signed L~ rLrt,~.~.v'~ ~f,, "~ (-,~j*-~ Title Senior Technical Assistant, Form 10-404 R~v' 06/15/88 ! Service Date 3/'/~/q~ SUBMIT IN DUPLICATE WEL]L Z-21 (31-18-11-12) PBU BULLHEAD HCL TUBING WASH OPERATION A Bullhead HCL Tubing wash was performed January 2, 1991, followed by a B OHCL on January 04, 1991. Bullhead summary as follows: 500 Gals of 15% HCL W/10% Xylene 78.5 Bbls of filtered SW. BOHCL summary as follows: 143 BB1S 10% HCL w/.4% CI-25, 6% NE-41, .2% MS-10 and 150 #'s F-210 36 BBls diesel W/5% MS-10 120 BBls SW W/.2% Inflow 45 600 5/8" Ball diverters. A Scale Inhibitor treatment was performed on February 10, 1991. Summary is as follows: 923 Bbls SW 145 Bbls SI W/OSR 10-1/2 Bbls 50/50 DSL/Xylene 47 Bbls diesel. fjh' 10/14/92 RECEIVED MAR 1 5 1993 Alaska Oil & Gas Cons. Commissk)~ Anchorage STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISsiON REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown Stimulate Plugging Perforate X Pull tubing Alter casing Repair well Other 5. Type of Well: I 6. Datum elevation (DF or KB')-~ Development X I KBE-- 91.82 AIV~eet Exploratory Stratigraphic 7. Unit or Property name Service, Prudhoe Bay Unit 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 719' SNL, 1669' EWL, SEC. 19, T11N, R12E, UPM At top of productive interval 1126' SNL, 2054' EWL, SEC. 18, T11N, R12E, UPM At effective depth 829' SNL, 2293' EWL, SEC. 18, T11N, R12E, UPM At total depth 793' SNL, 2317' EWL, SEC. 18, T11N, R12E, UPM 12. Present well condition summary Total depth: measured true vertical 11400feet BKB 9193feet Plugs (measured) 8. Well number Z-21 (31-18-11-12) PBU 9. Permit number/approval number 89-42/90-615 10. APl number 50- 029-21938 11. Field/Pool Prudhoe Oil Pool Effective depth: measured true vertical 11334feet BKB 9144feet Junk (measured) fill at 11398'MD (01/91) Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: Length measured .. 110 2622 10493 __ 1141 Size Cemented 20 13 3/8 3684 c.f. 9 5/8 2268 c.f. 7 378c. f. Measured depth 145 2657 10528 10259-11400 11088'-11115~ 11125'-11135~11030~11040~11052s11088~11135~11166' True verticaldepth BKB 145 2657 8557 8364-9193 true vertical subsea 8869~8926' (Five ~tervals) Tubing (size, grade, and measured depth) 3 1/2" L-80 to 10218' with 3 1/2" tailpipe to 10295' Packers and SSSV (type and measured depth) 9 5/8" TIWpacker at 10218'; 3 1/2" SSSV at 2093' 13. Stimulation or cement squeeze summary see attachment Intervals treated (measured) Treatment description including volumes used and final pressure 14. Prior to well operation Subsequent to operation Re.~resentative Daily Average Production or Injection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure 1140 635 191 0 2130 1848 357 0 Tubing Pressure 249 294 15. Attachments 16. Status of well classification as: Copies of Logs and Surveys run Daily Report of Well Operations., Oil X Gas ........ Suspended 17. I hereby certify that the foregoine, is true and correct to the best of my knowledge. Signed ~' , ~ Title Senior TechnicalAssistant I Form 10-404 Rev 06/15/88 -// Service Date :~/~/F.~' SUBMIT IN DUI~LI6ATE WELL Z-21(31-18-11-12) ADDPERF Approval#90-615 8/10/90 The following perf were added using 2 1/8" guns, 0° phasing. 11030'- 11040' MD BKB 4 SPF 11052'- 11088' MD BKB 4 SPF 11135'- 11166' MD BKB 4 SPF fjh 3/6/93 BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 DATE: 11/23/92 T# 84101 BP CH LOGS Enclosed is your copy of the materials listed below. If you have any questions, please contact BP Well Records at (907) 564-4004. G-12 ~/' ~ CCL 11/15/92 #1 R-25 ~Z-~ CCL 11/17/92 ~1 U-07¢~.~o ~STATIC_ ¢ r6/wP3 11/16/92 ~1 Z-18 ~-~(STATIC) ~~ 11/17/92 ~1 Z-21 ~_~STATIC) ~ 11/17/92 ~1 9100.00-10468.00 ATLAS 5 " 10100.00-10860.00 ATLAS 5 " 9545.00- 9714.00 ATLAS " 13050.00-13809.00 ATLAS " 10100.00-11082.00 ATLAS " Information Control Well Records . RE EiVED DEC ] 8 1992 '~mska Oil & Gas Cons. Commission Anchorage BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO: DISTRIBUTION Date :08/14/90 T# :81492 FROM: SUBJECT: Information Control Well Records LR2-1 BP CASED HOLE FINALS Enclosed is your copy of the matedal listed below. If you have any questions, please contact BP Well Records at (907) 564-4445. B-26 PFC 08/11/90 #1 10887-11225 Atlas 5" G-09 CCL 08/09/90 #1 9867-10253 Atlas 5" J-08 CL 08/10/90 #1 12050-12210 Atlas 5" W-27 PFC 08/09/90 #1 11253-11404 Atlas 5" Z-06 CL 08/09/90 #1 9830-10320 Atlas 5" Z-21 PFC 08/10/90 #1 10963-11195 Atlas 5" Distribution: ARCO CHEVRON EXXON GEOSCIENCES MOBIL PHILLIPS ARCHIVES STATE OF ALASKA Ab-,,.,KA OIL AND GAS CONSERVATION COMMIS~,,~N APPLICATION FOR SUNDRY APPROVAL 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 8. Operation Shutdown ~ Re-enter suspended well ~ Plugging Time extension ~ Stimulate .. Pull tubing __ Variance Perforate x Other~ ,,, 5. Type of Well: 6. Datum elevation (DF or KB) Development x KBE = 91.82 AMSL feet Exploratory ' Stratigraphic~ 7. Unit or Property name service ~ Prudhoe Bay Unit Well number Z-21 (31-18-11-12) PBU 9. Permit number 89-42 10. APl number 50- 029-21938 11. Field/Pool Prudhoe Oil Pool 719' SNL, 1669' EWL, SEC. 19, T11N, R12E, UPM At top of productive interval 1126' SNL, 2054' EWL, SEC. 18, T11N, R12E, UPM At effective depth 829' SNL, 2293' EWL, SEC. 18, T11N, R12E, UPM At total depth 793'SNL, 2317'EWL, SEC. 18, T11N, R12E, UPM 12. Present well condition summary Total depth: measured 11400 feet Plugs (measured) true vertical BKB 9193 feet Effective depth: measured 11334 feet true vertical BKB 9144 feet Junk (measured) fill at 11334'MD (09/89) Casing Length Size Cemented Measured depth True vertical depth Structural -- BKB Conductor 110 20 145 145 Surface 2622 13 3/8 3684 c.f. 2657 2657 Intermediate 10493 9 5/8 2268 c.f. 10528 8557 Production -- Liner 1141 7 378 c.f. 10259-11400 8364-9193 Perforation depth: measured 11030'-11040', 11052'-11088',1088'- 11115', 11125'- 11135', 11135'-11166' RECEIVED true vertical subsea 8919'-8998' (five intervals) Tubing (size, grade, and measured depth) 3 1/2"L-80 to 10218'with3 1/2" tailpipe to 10295' AUG o Oil & (;as Co,Is. Packers and SSSV (type and measured depth) 9 5/8" TlW packer at 10218'; 3 1/2" SSS V at 2093' i ~'~L' ~lll~I101'a..~. '''~ 13. Attachments Description summary of proposal X Detailed operations program BOP sketch X 14. Estimated date for commencing operation August 1990 16. If proposal was verbally approved Name of approver Russ Douglas 7/25/90 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 Supervisor Peripheral & EOA FOR COMMISSION USE ONLY Date Conditions of approval: Notify Commission so representative may witness Plug integrity ~ BOP Test~ Location clearance ~ Mechanical Integrity Test~ Subsequent form required 10- Approved by order of the Commission Form 10-403 Rev 06/15/88 WELL Z-21 (31-18-11-12~ PBU ADD'L. PERFORATION OPERATIONS The following additional perforations will be shot in two phases using 2-1/8" strip guns at 4 spf, 0 deg phasing. 11030' - 11040' MD BKB 11052' - 11088' MD BKB 11135' - 11166' MD BKB All depths are referenced to BHCS, 5/7/89. The well will be returned to production immediately following perforating operations, then tested. mr:7/27/90 BOWEN PAL;KOFF FLOW TUBES & PACKOFF }-'--- HAND GREASE SEAL FLOWTUBE PUMP FLOWLINE ~ FLOWLINE VALVE GREASE LINE RISER GREASE ' MANIFOLD GREASE PUMP ,,,-GREASE RESERVOIR BOP BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 November 3, 1989 Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Attention: Mr. C. V. Chatterton Well Z-21 (31-18-11-12) PBU Gentlemen: Enclosed, in duplicate, is Form 10-404, Report of Sundry Well Operations, for the above-named well. This contains our subsequent report of stimulating the well. Yours very truly, Manager Production Engineering JAB: JAM Enclosures (4) cc: L. Burke (MB12-1) Well Records (LR2-1) w/10 Well File STATE OF ALASKA - -, A,_ .JKA OIL AND GAS CONSERVATION COMMk ,.)N REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown Stimulate X Plugging Pull tubing Alter casing 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 719' SNL, 1669' EWL, SEC. 19, T11N, R12E, UPM At top of productive interval 1126' SNL, 2054' EWL, SEC. 18, T11N, R12E, UPM At effective depth 829' SNL, 2293' EWL, SEC. 18, T11N, R12E, UPM At total depth 793'SNL, 2317'EWL, SEC. 18, T11N, R12E, UPM 12. Present well condition summary Total depth: measured 11400 feet true vertical BKB 9193feet Repair well 5. Type of Well: Development X Exploratory Stratigraphic Service Plugs (measured) Perforate Other 6. Datum elevation (DF or KB) KBE = 91.82 AMSL feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-21 (31-18-11-12) PBU 9. Permit number/approval number 89-42 / 9-839 10. APl number 50- 029-21938 11. Field/Pool Prudhoe Oil Pool Effective depth: measured 11334 feet true vertical BKB 91644feet Junk (measured) fill at 11334' MD (09/89) Casing Length Size Cemented Measured depth Structural -- Conductor 110 20 145 Surface 2622 13 3/8 3684 c.f. 2657 Intermediate 10493 9 5/8 2268 c.f. 10528 Production -- Liner 1141 7 378 c.f. 10259-11400 Perforation depth: measured 11088'. 11115', 11125'- 11135' True vertical depth BKB 145 2657 8557 8364-9193 true vertical subsea 8869'-8903' (two intervals) Tubing (size, grade, and measured depth) 3 1/2"L-80 to 10218' with 3 1/2" tailpipe to 10295' Packers and SSSV (type and measured depth) 95/8" TlW packer at 10218';3 1/2" SSSV at 2093' 13. Stimulation or cement squeeze summary 14. see attachment Intervals treated (measured) Treatment description including volumes used and final pressure Reoresentative Daily Average Production or Injection D~ta /~i :;~!.';,~-~.~ ~ OiI-Bbl Gas-Md Water-Bbl Casing Pressure Tubing Pressure Prior to well operation 1650 1177 66 0 263 Subsequent to operation 2360 1523 128 0 272 15. Attachments 16. Status of well classification as: Copies of Logs and Surveys run Daily Report of Well Operations X Oil X Gas Suspended Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed(~~~/L~ ~"~~ Title FOrm 1~4~)4 Rev 06/15/88 - - ' ~/~r Manager Production EngineeringSUBMITDateIN DUPLICATE~II'/. ~ WELL Z-21 (31-1~-11-12~ PBU STIMULATION REPORT A diagnostic backflush followed by a clay acid treatment was performed on the following perforated intervals in Well Z-21. 11088' - 11115' MD BKB 11125' - 11135' MD BKB The backflush, performed September 21, 1989, consisted of 616 bbls. of treated seawater bullheaded at maximum rate. The well was returned slowly to production, then tested. The following clay acid treatment was pumped October 1, 1989, via coiled tubing: a) b) c) d) e) f) g) h) i) j) k) 12 bbls. Arctic diesel preflush 10 bbls. 10% HCI 4 bbls. diverter 10 bbls. 10% HCI 4 bbls. diverter 29 bbls. 10% HCI 72 bbls. 6% HCI-1.5% HF 36 bbls. 3% NH4C1 85 bbls. 8% HBF4 10 bbls. xylene Displaced from coiled tubing with 24 bbls. diesel The well was left shut in for two hours, then returned to production and tested. jm 10/6/89 BP EXPLORATION BP Ex~)lorat~on (Alaska) Inc. 900 East Benson Boulevara P.O. Box 196612 Ancl~orage, Alaska 99519-6612 (907) 561-5111 TO: HOUSTON ARCO CHEVRON EXXON TEXACO MOBIL ARCHIVES DATE: 10/06/89 Tg: 80454 BP FINAL DATA - PRESSURE SURVEY DATA Enclosed is your copy of the material listed below. If you have any questions, please contact BP Well Records at (907) 564-4445. ~"~C-31 BHP Pressure Report 09/21/89 Camco J GC-3D BHP Pressure Report 09/25/89 Camco '"'~GC-3D BHP Pressure Report 09/24/89 Camco ~'~"J-07 BHP Pressure Report 09/23/89 Camco '"'~W-03 BHP Pressure Report 09/21/89 Camco Z-09 BHP Pressure Report 09/24/89 Camco Information Control R Well Records LR 2-1 J. Dietz/S. McCurry Anchorage BP EXPLORATION September 18, 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-21 (31-18-11-12) PBU Gentlemen: Enclosed, in triplicate, is Form 10-403, Application for Sundry Approvals, for the above-named well. This contains our proposal to stimulate the well. Yours very truly, J. A. Bragg Manager Production Engineering JAM: JAM Enclosures (9) cc: L. Burke (MB12-1) Well File RECEIVED sEP ! e 1989 ~nchorage r---.. STATE OF ALASKA ~ , SKA OIL AND GAS CONSERVATION COMMi )N 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 operation Shutdown__ Re-enter suspended well__ Plugging Time extension__ Stimulate x Pull tubing __ Variance Perforate__ Other__ 6. Datum ele~/ation (DF or KB) KBE = 91.82 AMSL feet 5. Type of Well: Development x Exploratory ~ Stratigraphic ~ Service 4. Location of well at surface 719' SNL, 1669' EWL, SEC. 19, T11N, R12E, UPM At top of productive interval 1126' SNL, 2054' EWL, SEC. 18, T11N, R12E, UPM At effective depth 815' SNL, 2302' EWL, SEC. 18, T11N, R12E, UPM At total depth 793' SNL, 2317' EWL, SEC. 18, T11N, R12E, UPM 12. Present well condition summary Total depth: measured 11400 feet true vertical BKB 9193 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-21 (31-18-11-12) PBU 9. Permit number 89-42 10. APl number 50- 029-21938 Field/Pool Prudhoe Oil Pool 11. Plugs (measured) Effective depth: measured 11359 feet Junk (measured) true vertical BKB 9162 feet Casing Length Size Cemented Measured depth True vertical depth Structural -- BKB Conductor 110 20 145 145 Surface 2622 13 3/8 3684 C. fo 2657 2657 Intermediate 10493 9 5/8 2268 c.f. 10528 8557 Production -- Liner 1141 7 378 c.f. 10259-11400 8364-9193 Perforation depth: measured 11088'-11115', 11125'-11135' R E~2~ ~¥~' .L t"~'i~ true vertical subsea 8869'-8903' (two intervals) Tubing (size, grade, and measured depth) 3 1/2" L-80 to 10218' with 3 1/2" tailpipe to 10295' /: laska Oil & Gas CoL Packers and SSSV (type and measured depth) 9 5/8" TlW packer at 10218'; 3 1/2" SSSV at 2093' AllCh0]~0 '13. Attacl~ments Description summary of proposal X Detailed operations program BOP sketch 14. Estimated date for commencing operation I 15. Status of well classification as: September 1989 ' 16. 'Ii pr¥osal was verbally approved Oil X Gas ~ Suspended ~ Name of approver Date approved Service 17. I hereby cert~ th, at the~oing is,[rue and correct to the best of my knowledge. ~ ...Signed ~..~~/~.4~.,~ ..~ Title ManagerProductionEnf~ineering ./~/?~//~ ~ Date ~' ~// ' FOR COMMISSION USE ONLY Conditions of approval: Notify Commission so representative may witness ! AP~ rc~v. ad No. ~..._ ,~/~::~ Commissioner Date Plug integrity ~ BOP Test Mechanical Integrity Test__ Approved by order of the Commission Form 10-403 Rev 06/15/88 Location clearance Subsequent form required 10- ORIGINAL SIGNED BY t. ONNIE C. SMITH SUBMIT IN TRIPLICATE WELL Z-21 (31-18-11-12] PBU STIMULATION PROPOSAL A diagnostic backflush followed by a contingent clay or mud acid treatment is proposed for the following perforated intervals in Well Z-21. 11088' - 11115' MD BKB 11125' - 11135' MD BKB The backflush will consist of 600 bbls. of treated seawater bullheaded at maximum rate. The well will be returned slowly to production, then tested. If results of the backflush identify fines migration, the following clay acid treatment will be pumped via coiled tubing: a) b) c) d) e) f) g) h) i) J) k) 12 bbls. Arctic diesel preflush 10 bbls. 10% HC1 4 bbls. diverter 10 bbls. 10% HC1 4 bbls. diverter 28 bbls. 10% HC1 71 bbls. 6% HCl-l.5% HF 36 bbls. 3% NH4C1 83 bbls. 8% HBF4 10 bbls. xylene Displace from coiled tubing with diesel The well will be left shut in for two hours, then returned to production and tested. If the results of the backflush show no moveable fines, the following mud acid treatment will be pumped via coiled tubing: a) b) c) d) e) f) g) h) i) J) k) 12 bbls. Arctic diesel preflush 10 bbls. 10% HC1 4 bbls. diverter 15 bbls. 10% HC1 4 bbls. diverter 23 bbls. 10% HC1 119 bbls. 6% HCl-l.5% HF 119 bbls. 3% NH4C1 12 bbls. Arctic diesel post-flush 10 bbls. xylene Displace from coiled tubing with diesel The well will be returned to production slowly, then tested. RECEIVED Ar~chora~ jm 9/14/89 Coiled Tubing Blow-Out-Preventers Coiled Tubing Pack-Off 2~ Blind Rams Cutter Rams Chicksan (Kill Line) ) ( Slips Pipe Rams Pump-In Sub (C irc ula te/R e turns ) W ell Head sw~ v~,v~ R~< ~ ~ Ancho~a!)0 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 ! MOBIL PHILLIPS STATE OF ALASKA GEOSCIENCES RESERVOIR ARCHIVES Date: 07/17/89 Tf: 80171 BP CASED HOLE FINAL LOGS The following material is being receipt by signing a copy of thi D-21 E-05 E-16 F-09 GC-iE M-29 R-16 x-06 Z-21 Z-23 Z-23 Z-23 Z-32 A-03 Perf-R 07/05/89 Prod-F 06/29/89 Prod-F 06/30/89 TMD 07/04/89 Completion 07/06/89 Perf-R 07/09/89 PFC 07/06/89 Inj 07/02/89 Prod-F 06/27/89 CET 07/05/89 Perf-R ,07/05/89 CBT 07/05/89 PITS 06/30/89 CCL 07/01/89 submitted herewith. Please acknowledge s letter and returning it to this office: 9900-11204 Sch 5" 9700-10053 Camco 5" 8700-9340 Camco 5" 9400-10050 HLS 5" 4650-5650 Sch 5" 9560-9970 Sch 5" 11150-11406 Atlas 5" 11900-12650 Camco 5" 10850-11359 Camco 5" 8872-9748 Sch 5" 9552-9592 Sch 5" 8872-9748 Sch 5" 10900-11270 Camco 5" 9200-12008 Camco 5" Received: Date: Information Control Well Records LR2-1 J. Dietz/S. McCurry BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 June 27, 1989 Alaska Oil & Gas Conservation Commission 3001 Porcupine Dr. Anchorage, Alaska 99501 Attn: Mr. C. V. Chatterton Well Z-21 (31-18-11-12) 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) Jan Martin (MB 9-4) Well Records w/10 Well File UN 2 9 ]989 & Cas Cons. C0,~lmj8~[~ Anchorage :.,'- STATE OF ALASKA ALASK~ oIL AND GAS CONSERVATION C,,JMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Status of Well Classification of Servic9 Weft OIL [] GAS. Eli SUSPENDED [] ABANDONED [] SERVICE [] ....... 2. Name of Operator 7. Permit Number BP Exploration 89-42 3. Address 8. APl Number P. O. Box 196612, Anchora~le, Alaska 99519-6612 5o- 029-21938 4'. Locati~n of well at surface ' ' 9. Unit or Lease Name 719' SNL, 3283' WEL, SEC. 19, T11N, R12E~"~f 10.Prudh°ewell NumberBay Unit At Top Producing Interval ~---.,~ Z-21 (31-18-11-12) 1123' SNL, 2898' WEL, SEC. 18, T11N, R12E . 11. Field and Pool At Total Depth Prudhoe Bay Fie/d/Prudhoe Bay Pool 791' SNL, 2634' WEL, SEC. 18, T11N, R12E 5. Elevation in feet (indicate KB, DF, etc.) 6. Lease Designation and Serial No. KBE = 91.82' . ADL 28262 112. Date 'Spudded' 13. Date T.D. Reached 14. Date Comp., St~sp. or Aband. 115. Water Depth, il offshore 16. No. of Completions 04/19/89 05/06/89 05/12/89I N/A feet MSL One 17. Total Depth (MD+TVD) 18. Plug Back Depth (MD+TVD) 19. Directional Survey 120. Depth where SSSV set 21. Thickness of Permafrost 11400'MD/9193'TVD 11359'MD/9162'TVD YES [] NO []I 2093feet MD 1892' 22. Type Electric or Oiher Logs Run ,. DIFL,. LD T/CNL - Raw Poro, BHC/AL-GR 23. CASING, LINER AND CEMENTING RECORD sETTING DEPTH MD CASING SIZE WT. PER FT. GRADE TOP BOTTOM HOLE SIZE CEMENTING RECORD AMOUNT PULLED ,,. 20" Conductor Surface 110' .... 13-3/8" 68t/ L-80 Surface 2657' 17-1/2" 3684 cu ft Permafrost 9-5/8' 47tt NTSOS S'ufrace 10528' 12-i/4" 2268 cu ft Class G 7" 26It L-80 102.59' 11400' 8-1/2" 378 cu ft Class G :54. 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) Schlumberger 5" @ 4 spf 321/2" 9.211 L-80 ' ~ 0295' 10218' w/tailpipe MD TVDss 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. 11088'-11115' 8869'-8889' DEPTH INTERVAL (MD) AMOUNT & K'IND OF MATERIAL USED 11125'-11135' 8896'-8903' 13-3/8"x 9-5/8" Down squeezed annulus w/175 bbls Dr)/Crude. , . 27. PRODUCTION TEST Date First Production Method of Operation (Flowing, gas lift, etc.) .May 11, 1989 F/owing Date of Test Hours 'Tested TEsTPRODUCTIONpERIOD FOR~ ©IL-BBL GAS-MCF WATER-BBL CHOKE SIZE GAS-OIL RATIO Flow Tubing Casing Pressure CALCULATED OIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-APl (corr) Press. .~4-HOUR RATE I~ 28. ' ' CORE DATA Briel description of lithology, porosity, fractures, apparent dips, and presence of oil, gas or water. Submit core chips. RECEIVED J !J N 2 9 ]989 ~\ta:;,<. ~,. ,~ oas Cons. 601~111118~..~1 Anchorage ,,. Form 10-407 Rev. 7-1-80 CONTINUED ON REVERSE SIDE Submit in duplicate 29. 30. GEOLOGIC MARKERS FORMATION TESTS NAME Include interval tested, pressure data, all lluids recovered and gravity, MEAS. DEPTH TRUE VERT. DEPTH GOR, and time of each phase. SAG 10526' 8556' SHUBLIK A 10562' 8581' ZONE 4 10773' 8732' 31. LIST OF ATTACHMENTS 32. I hereby certify that the foregoing is true and correct to the best of my knowledge ~) Signed . Title Drilling Engineering Supervisor Date ~/~x'//~-'~ //?~f-/ 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 Daily Drilling Report-- Prudhoe Bay Unit April 18, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: Day: 24- Hour Ftg: Current Operation: Skidding to Z-21. Mud Type: SURVEY WT: VIS: PV: YP: ~ ANGLI~ D,, IRECTION Solids: Temp: · COORDINATES, DLS BP ~;~..OR~N Rig: Audi 2 Well: Z-21 (31-18-11-12) Daily Drilling Report -- Prudhoe Bay Unit April 19, 1989 at 0600 hrs AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 439' Day: -1 24- Hour Ftg: 322' Current Operation: Tripping for bit. Accepted rig 1400 hrs. 4-18-89. Spud @ 0001 hrs. 4-19-89. Drilled 17-1/2" hole to 439'. Mud Type: SPUD MUD WT: 9.5 VIS:220 PV: 15 YP: 55 FL: 10.2 Solids: 5.0 Temp: 49 °F SURVEy MD ANqlLE DIRECTION TVD SECTION COORDINATES DLS BP EXP/..OR~N Daily Drilling Report-- Prudhoe Bay Unit April 20, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 1650' Day: 1 24- Hour Ftg: 1211' Current Operation: Drilling, Drilled 17-1/2" hole to 1650'. Mud Type: SPUD $1.rRVE¥ MD 'WT: 9.65 VIS: 88 PV: 19 ANGLE DIREr'ION TVD YP: 29 FL: 14.5 SECTIQN Solids: 6.5 Temp: 73 °F COORDINATES DLS BP EXI~.OR,~ION Rig: Audi 2 Well: Z-21 (31-18-11-12) Daily Drilling Report-- Prudhoe Bay Unit April 21, 1989 at 0600 hrs AFE 45 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 2675' Day: 2 24- Hour Ftg: 1025' Current Operation: Lay down landing joint and cement head. Drilled 17-1/2" hole to 2675' TD. Ran and cemented 13-3/8" casing. Mud Type: SPUD WT: 10.2 VIS:48 PV: 16 YP: 14 FL: 12 SURVEY MD, ANGLE DIRE~FIQN TVD SECTION Solids: 9 Temp: 66 °F COORDINATES DL$. BP EXPLOR~N Daily Drilling Report -- Prudhoe Bay Unit April 24, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 4549' Day: 5 72- Hour Ftg: 1874' Current Operation: POH for BHA charge. Tested BOP and casing. Cleaned out cement and float equipment. Drilled 12-1/4" to 3758'. Lost motor in hole. Sidetrack hole from 3460' to 3493'. Drilled 12-1/4" hole to 4549'. ' Mud Type: DISPERSED WT: 9.75 SURVEY ,MD,, ANGLE VIS: 44 PV: 13 YP: 7 FL: 9.4 Solids: 8.8 Temp: DIRECTION TVD SECTION COORDINATES 75°F DLS I~ EXI~OR~;i'iON Daily Drilling Report -- Prudhoe Bay Unit April 25, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 6044' Day: 6 24- Hour Ftg: 1495' Current Operation: RIH w/bit. Drilled 12-1/4" hole to 6044'. Mud Type: DISPERSED WT: 9.7 SURVEY ,MD ANGLE VIS: 41 PV: 13 DIRE~I~QN TVD YP: 12 FL: 8.8 SECTION Solids: 9.5 Temp: 85 °F COORDINATES DLS BP EXPLOR~N Daily Drilling Report -- Prudhoe Bay Unit April 26, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 6481' Day: 7 24- Hour Ftg: 437' Current Operation: POH from BI-IA change. Drilled 12-1/4" hole to 6481'. Mud Type: DISPERSED WT: 9.9 SURVEY MD ANGLE VIS: 44 PV: 14 YP: 10 FL: 6.8 DIRECTION TVD SECTION Solids: 10.4 Temp: COORDINATES 75°F DLS BP EXPLOR.~TION Daily Drilling Report -- Prudhoe Bay Unit April 27, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 7135' Day: 8 24- Hour Ftg: 654' Current Operation: POH for bit. Drilled 12-1/4" hole to 7135'. Mud Type: DISPERSED WT: 10.5 SURVEY MD ANGLE VIS: 52 PV: 18 DIRECTION TVD YP: 14 FL: 5.0 SECTION Solids: 12 Temp: 79 cF COORDINATES DLS !~ ~Oq. OR~'~N Ug: Audi 2 ~rell: Z-21 (31-18-11-12) Daily Drilling Report -- Prudhoe Bay Unit April 28, 1989 at 0600 hrs AFE # 120922 APE 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 7405' Day: 9 24- Hour Ftg: 270' 2urrent Operation: Drilled 12-1/4" hole to 7405'. Mud Type: DISPERSED WT: 10.5 SURVEY MD ANGLE VIS: 53 PV: 19 DIRE~I'ION TVD YP: 13 FL: 4.8 SECTION Solids: 12 Temp: °F COORDINATES, DLS BP EXPLOR,~'iON Daily Drilling Report -- Prudhoe Bay Unit May 1, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 9150' Day: 12 72- Hour Ftg: 1745' Current Operation: Drilling 12-1/4" hole. Drilled 12-1/4" hole to 9150'. Mud Type: DISPERSED WT: 10.5 ~IJRVEY MD ANGLE VIS: 40 PV: 13 YP: 8 FL: 4.8 DmEGTION TVI) SE~WIQN Solids: 12.5 Temp: COORDINATES 90°F DL$ BP EXIR..OR~N Daily Drilling Report -- Prudhoe Bay Unit May 2, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 9470' Day: 13 24- Hour Ftg: 320' Current Operation: Drilling. Drilled 12-1/4" hole to 9470'. Mud Type: DISPERSED WT: 10.5 VIS: 38 PV: 13 SURVEY MD ANGLE DIRE(~WION TVD YP: 9 FL: 4.4 SECTION Solids: 12 Temp: COORDn',rATE$ . 96 °F DLS BP EXPLORgrlON Daily Drilling Report -- Prudhoe Bay Unit May 3, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 10020' Day: 14 24- Hour Ftg: 550' Current Operation: Drilling. Drilled 12-1/4" hole to 10020'. Mud Type: DISPERSED WT: 10.5 SURVEY MD ANGLE VIS: 39 PV: 11 DIRECTION TVD YP: 9 FL: 4.0 SECTION Solids: 12 Temp: 97 °F COORDINATES DLS. BP EXPLOR, M'ION Daily Drilling Report -- Prudhoe Bay Unit May 4, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 10532' Day: 15 24- Hour Ftg: 512' Current Operation: Short trip for 9-5/8". Drilled 12-1/4" hole to 10532'. Mud Type: DISPERSED WT: 10.5 ~URVEY .MD ANGLE VIS:39 PV: 13 YP: 10 FL: 5.4 DIRECTION TVD SECTION Solids: 12 Temp: 102 °F COORDINATES DLS BP EXPLOFIN'ION Daily Drilling Report-- Prudhoe Bay Unit May 5, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 APL 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 10532' Day: 16 24- Hour Ftg: 0 Current Operation: Rig down tools and landing joing. Ran and cemented 9-5/8" casing. Mud Type: DISPERSED WT: 10.6 VIS: 44 PV: 19 SURVEY MD ,,A. NGLE DIRE~'TIQN TVD YP: 11 FL: 5.0 SECTION Solids: 13 Temp: 86 °F COORDINATES DLS. BP EXPLORN'ION Daily Drilling Report -- Prudhoe Bay Unit May 8, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 11400' Day: 19 72- Hour Ftg: 1008' Current Operation: RIH with 7" liner. Tested BOP's. RIH and tested 9-5/8" casing to 3000 lbs. Cleaned out cement to %5/8" shoe and drilled 8-1/2" hole to 11400' TD. Ran logs. Mud Type: DISPERSED WT: 9.5 SURVEY MD ANGLE VIS: 42 PV: 12 YP: 9 FL: 6.4 Solids: 6.5 Temp: DIRECTION TVD. SECTION COORDINATES 92°F DLS BP EXPLORMION Daily Drilling Report -- Prudhoe Bay Unit May 10, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 11400' Day: 21 24- Hour Ftg: 11359' Current Operation: POH for cased hole logs. Drilled cement and landing collar to 11359' PBTD. Displace hole to 9.1 ppg brine. casing to 3000 psi. Test Mud Type: BRINE SURVEY MD WT: 9.1 VIS: PV: YP: FL: Solids: Temp: ANGLE DIREL'TION TVD SECTION COORDINATES DL$ BP EXPLOR~N Daily Drilling Report .- Prudhoe Bay Unit May 11, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 11400' Day: 22 24- Hour Ftg: 0 Current Operation: Perforating. POH. RU Schlumberger and mn logs. Perforate 11125'-11135' and 11107'-11115'. Mud Type: BRINE WT: 9.1 VIS: PV: YP: FL: Solids: Temp: °F SURVEY MD ANGLE DIRE~7I~QN TVD. SECTION .~OQRDINATES DLS. BP EX~.OR.~'I~N Daily Drilling Report -- Prudhoe Bay Unit May 12, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: 0600 Depth: 11400' Day: 23 24- Hour Ftg: 0' Current Operation: Set wireline plug in tailpipe. Perforate 11088'-11107'. RD Schlumberger. Run 3-1/2" tubing. ND BOP's. Install tree and test to 5000 psi. Mud Type: BRINE SURVEY MD WT: 9.1 VIS: PV: YP: FL: Solids: Temp: °F ANGLE DIRECTION TVD SECTION COORDINATES, DLS Bi~ EXPLOR~N Daily Drilling Report-- Prudhoe Bay Unit May 15, 1989 at 0600 hrs Rig: Audi 2 Well: Z-21 (31-18-11-12) AFE # 120922 API: 50-029-21938 AFE Amount: Current Amount: Current Operation: 0600 Depth: 11359' PBTD Day: 24 48- Hour Ftg: 0 Downsqueezed 13-3/8" X 9-5/8" annulus with dry crude. Released rig 1200 hrs. 5-12-89. Mud Type: BRINE SURVEY MI) WT: 9.1 VIS: PV: YP: FL: Solids: Temp: °F ANGLE DIRE~'TION TVD SECTION COORDINATES BLS SUB-~URFACE DIRECTIONAL ~URVEY F'~UIDANCE r~']ONTINUOUS Uate _L, lC) ....... f~OOL Company Well Name Field/Location PRUDHOE BAY, RECEIVED Alas.k,., .J,~ ~ ~as Cons. fl P F. X P 1_ 13 R A T T 0 N Anchorage. Z-2l (31-18-11-12){71,9' SNL, 1669' EWE;SEC 19~TllN,R12E NORTH S~QPE ALASKA Job Reference No. 73337 Logoed By: BARBA Date lO-MAY-89 Computed By: KOHRING * SCHLUMEERGER * GCT DIRECTIONAL SIJRVE¥ CUSTOMER LISTIhG FOR BP EXPLORaTIO~ Z-Z1 (31-18-11-12) OF CO~PUT~TIO~ TCOL lOC~lION: I~TERPOL~TION: ~ERTICAL SECIION: T~NGEhTIAL- LINEA~ H£RIZ. £IST. PRU~HEE BAY NCRTH SLOFE~ ~LASKA SURVEY DATE: l O-M~Y-89 ENGINEER: BARBA ~VERAGED r~EVI~TIO~ ANE AZIMUTh PROJECTED ONTO ~ TARGET ~ZIMl~TH CF NORTH DEG 50 MIN E~ST BP EXPLORATI£fl Z-21 631-18-11-12) PRUOPOE EAY NORTH SLOPEr ALASK~ COMPbT~TION DATE: 19-MAY-89 PAGE 1 DATE OF SURVEY: lO-MAY-BO KELLY ~L'SHIhG ELEVATION: 91.82 FT ENGINEER: BAREA INTERPCLATED VJL~ES FOR EVEN 100 FEET OF MEASURED CEPTF TRLE SUB-SEA COURSE MEASUflED VERTICAL VERIICAL DE¥IATION AZIMUTH DEPlH DEPTH DEPTH DEG MIN EEG MIN 0.00 C.O0 -91.82 0 0 N 0 0 E 100.00 100.10 8.28 0 3 N 85 0 E 200.00 20C.10 108.28 {2 6 N 61 52 E 300.00 30C.10 208.28 0 10 N 53 49 E 400.00 40C.10 308.28 0 10 N 20 19 E 500.00 50C.10 408.28 0 9 N 20 51 W 600.00 600.10 508.28 0 g N 42 46 W 700.00 700.10 '608.28 {2 B N 68 40 W 800.00 800.10 708.28 {3 8 S 88 54 W 900.00 90C.10 808.28 0 B S 60 7 W 1000.00 1000.10 908.28 1100.00 1100.10 1008.28 1200.00 1200.10 llOB.ZB 1300.00 1300.10 1208.28 1400.00 140C.10 1308.28 1500.00 150¢ .09 1408.27 1600.00 160C .09 1508.27 1700.00 170{3.09 16618.27 1800.00 1800.08 1708.26 1900.00 190{3.08 1808.26 0 8 S 18 17 W {3 B S 19 19 E 0 10 S Z~l 23 E G 15 S 64 45 E 0 14 S 82 59 E (] 16 S 71 44 E 0 20 S 70 1Z E {3 37 S 81 52 E C 27 N 7~ 40 E O 22 N 71 53 E 12000.00 2000 -08 1908.26 2100.00 2100.08 2008.26 2200.00 2200.08 2108.26 2300.00 2300.08 2208.26 2400.00 240C .07 2308.25 2500.00 250C .07 2408.25 2600.00 260£ .07 25~,8.25 2700.00 2700.07 2508.25 2800.00 280C .07 2708.25 2900.00 290C.04 2808.12 0 21 N 73 39 E C 18 N 84 14 E C 17 S 81 lB E 018 S B1 49 E C 9 S 82 12 E C 2 S 2! 36 E 0 15 S 2 37 W O 34 S 25 12 W C 22 S 23 45 W 2 39 N ~ B E 3000.00 2995.72 zgc7.9U 6 2 3100.00 309E.83 3007.01 g 0 3200.00 319'/.07 3105.25 12 20 3300.00 3294.29 3202.4./ 14 39 3400.00 339C.61 3298.79 16 20 3500.00 3486.51 33c, 4.6q 16 17 3600.00 3582.58 34c~ 0.76 16 1 3700.00 367E.61 3586.79 16 30 3800.00 3774.08 36H2.26 1~ 19 3900.00 386~.19 3776.37 21 25 N 2 56 E N 3 21 E N I 13 E N I 53 E N I 45 E N 2 17 E N 4 1 E N N 9 21 E N 4 52 E VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SO~TH EAST/WEST DIST. AZIMUTH FEET DEG/1CO FEET FEET FEET DEG MIN 0.00 0.00 0.00 N 0.00 E -0.01 0.00 {3.02 S 0.06 E 0.08 0.00 Q.05 N 0.18 E 0.24 0.00 0.20 N 0.39 E 0.50 0.23 {3.44 N 0.57 E 0.79 0.00 C.73 N 0.55 E 1.01 0.00 {3.97 N 0.39 E 1.16 O.O0 1.14 N 0.19 E 1.19 0.10 1.21 N 0.06 W 1.08 0.00 1.13 N 0.30 W 0.86 0.00 0.92 N 0.44 W 0.62 0.15 0.69 N 0.47 W 0.40 0.05 ~.45 N 0.36 W 0.25 0.00 {3.25 N 0.04 W 0.20 0.04 0.16 N 0.40 E 0.18 0.00 {2'.08 N 0.86 E 0.05 0.00 {3.11 S 1.37 E -0.03 0.03 0.30 S 2.26 0.09 0.34 {2.29 S 3.17 E 0.35 0.12 {2.11 S 3.85 E 0.59 0.16 {3-06 N 4.46 E 0.78 0.07 O.1B N 5.03 E 0.84 O.S1 C.19 N 5.50 E 0.86 0.25 C.14 N 6.07 E 0.84 0.13 0.07 N 6.48 E O.B2 0.02 C.03 N 6.~4 E 0.51 0.00 C.30 S 6.72 E -0.22 0.54 1.00 S '6.51 E -1.07 0.42 1.81 S 6.13 E 0.47 2.66 0.26 S 6.06 E 8.24 2.88 2.53 N 21.46 2.S8 20.74 N 39.95 2.18 35.28 N 63.26 1.80 62.67 N 90.02 1.17 8S.52 N 118.26 0.'/0 117.85 N 145.94 0.68 145.55 N 173.82 1.33 17].33 N 2{23.54 2.59 202.77 N 237.30 4.28 23~.23 N 0.00 N 0 0 E 0.07 S 70 36 E 0.19 N 73 44 E ) 0.44 N 62 52 E ' 0.72 N 52 15 E 0.92 N 37 6 E 1.05 N 21 58 E 1.16 N 9 lg E 1.21 N 2 5'/ W 1.17 N 1~ 56 W 1.02 N 25 1S W 0.83 N 34 41 W 0.57 N 38 51 W 0.26 N 9 54 W 0.43 N 68 22 E 0.86 N 84 38 E 1.37 S 85 26 E 2.28 S 82 23 E 3.19 S 84 ~+7 E ' 3.85 S 8B lg E 4.46 N 89 12 E 5.03 N 87 56 E 5.50 N 88 6.07 N 88 39 E 6.48 N 89 24 E 6.64 N 89 43 E 6.72 S 87 28 E 6.58 S 81 15 E 6.39 S 73 30 E 6.06 S 8? 35 E 6.41 E 9.89 N 40 25 E 7.25 E 21.97 N 19 16 E 8.00 E 40.09 N 11 30 E 8.69 E 63.27 N 7 53 E 9.50 E 90.03 N 5 3 E 10.51 E 118.32 N 5 5 E 11.98 E 146.05 N 4 42 E 14.49 E 173.93 k 4 46 E 18.57 E 203.62 N 5 14 E 23.14 E 237.36 N 5 35 E EP EXPLORATICN Z-21 (31-18-11-12) PRUDFOE EAY kORTP SLCPE, ALASKA COMPLTaTION DATE: 19-MAY- 89 KELLY DATE OF SURVEY: BL~ SHING ELEVATION: ENGINEER: PAGE 2 lO-MAY-89 91.82 FT BARBA INTERPCLATED VALLES FOR TR~E SUB-SEA MEASUREO VERTICAL VERTICAL DEPTH DEPTH DEPTH 4000.00 3955.81 3867.99 4100.00 4048.28 3956.4d 4200.00 4134.43 4042.61 4300.00 4216.76 4124.94 4400.00 4294.20 4202.38 4500.00 436'/.21 4225.39 4600.00 443d~.40 4344.58 4700.00 4504.65 4412.83 4800.00 4572.48 4480.6~ 4900.00 463S.84 4548.02 5000.00 470f.70 4614.88 5100.00 4773.25 4681./+3 5200.00 483~J ,47 4747.65 5300.00 4905.87 4814.05 5400.00 4972.73 4880.91 5500.00 503~ .96 4948.14 5600.00 5102.58 5015.76 5700.00 5175.56 5083.74 5800.00 5243.71 5151.89 5900.00 5312.00 5220.18 4) 000.00 538C.70 5288.88 6100.00 544cj .21 5357.39 ~200.00 5516.86 5¢25.04 6300.00 5583.93 5492.11 6400.00 565C.34 5558.52 6500.00 5712.52 5625.71 6600.00 5785.44 56':23.62 6700.00 5853.82 57~:2. O0 6800.00 5922.72 5830.9C 6900.00 5992.11 5900.25 7000.00 6061.98 5970.16 7100.00 6132.22 6040.40 7200.00 6201.54 6109.72 7300.00 626'/.47 6175.65 7400.00 632~ .50 6237.69 7500.00 638cj .48 6297.66 7600.00 645C.62 6358.80 7700.00 6513.06 6421.25 7800.00 6576.51 6484.69 7900.00 6641.09 6549.22 EVEN 100 FEET OF MEASURED CEPTt COURSE VERTICAL OUGLEG RECTANGULAR {]E~IJTION aZIMUTH SECTION SEVERITY ~ORTN/SOLTH OE(~ MIW CEG MIN FEET DEG/IO0 FEET 25 47 N 0 53 W 29 18 N 0 11 W 32 6 N I 23 W 37 0 N 5 29 W 41 13 N 1 0 W 45 0 N 7 9 W 46 57 N 7 13 W 47 2 N 7 41 W 47 28 N 7 54 W 47 55 N ') 57 W 48 7 N 8 12 W 48 27 N 8 30 W 4~ 32 N B 38 W 48 12 N 8 46 W 47 56 N 8 5 8 W 47 29 N 9 2 W 47 18 N 9 20 W 47 7 N q 28 W 46 58 N S 34 W 46 47 N S 34 W 46 29 N 9 41 W 47 10 N 10 3 W 47 36 N 10 4~ W 4H 11 N 11 6 W 4E 20 N E 43 W 47 24 N 2 41 W 4.1 3 N 2 5 W 4~ 39 N 2 22 W 46 14 N 2 34 W 45 52 N 2 44 W 277.09 4.91 276..20 N 323.24 2.10 322.74 N 373.59 4.66 373.50 N 429.32 5.38 430.06 N 490.8] 3.85 492.87 N 557.12 3.'17 56C.64 N 627.17 0.30 632.27 N 697.99 0.66 704.74 N 769.09 0.36 77'/.55 N 840.54 0.44 850.74 N 912.40 984.43 1056.66 1128.70 1200.28 1271.49 1342.31 1412.71 1482.93 1553.01 1622.69 1692.47 1762.80 1833.43 1904.81 1977.18 2049.68 2121.73 2193.25 2264.27 2334.79 2404.92 2476.00 2550.50 2628.47 2708.10 2786.84 2864.57 2941.55 3017.62 45 29 N 2 56 W 45 20 N 3 OW 47 17 N 2 0 W 5{3 10 N 0 13 E 53 5 N 1 12 E 52 51 N I 7 E 51 46 N 1 8 E 5C 58 N 1 23 E 5C 11 N ! 49 E 4S 22 N 2 14 E COOREINATES HORIZ. DEPARTURE EAST/WEST DIST. AZIMUTH FEET FEET DEG MIN 24.00 E 277.24 N 4 58 E 23.47 E 323.59 N 4 $ E 23.03 E 374.21 N 3 31 E 19.46 E 430.51 N 2 35 E 12.34 E 493.03 N 1 26 E 3.89 E 560.66 N 0 23 E 5.10 W 632.30 N 0 27 W 14.59 W 704.89 N I 11 W 24.55 W 777.93 N 1 48 W 34.76 W 851.45 N 2 20 W 0.33 924.36 0.44 998.21 0.09 1072.30 0.44 1146.22 0.15 1215.69 0.25 1292.80 0.87 1365.53 0.23 1437.88 0.18 15113.05 0.62 1582.09 N 45.21 W 925.47 N 2 48 W N 56.07 W 999.78 N 3 12 W N 67.25 W 1074.41 N 3 35 W N 78.58 W 1148.91 N 3 55 W N 90.05 W 1223.01 N 4 13 W N 101.65 W 1296.79 N 4 29 W N 113.38 W 1370.23 N 4 44 W N 125.39 W 1443.34 N 4 59 W N 137.50 W 1516.30 N 5 12 W N 149.64 W 1589.15 N 5 24 W 0.54 1653.73 1.05 1725.50 0.59 179.1.93 0-18 1870.76 5.14 1944.28 2.32 201.1.99 0.44 2091.33 0.53 2164.24 0.43 2236.65 0.35 2308.58 161.80 W 1661.62 N 5 35 W 174.25 W 1734.28 N 5 45 W 187.56 W 1807.69 N 5 57 W 201.64 W 1881.59 N 6 9 W 215.17 W 1956.15 N 6 18 W 222.02 W 2030.16 N 6 16 W 224.80 W 2103.38 N 6 8 W 227.62 W 2176.18 N 6 O W 230.78 W 2248.53 N 5 53 W 234.12 W 2320.42 N 5 47 W 0.35 2380.04 N 0.61 2451.12 N 3.51 2523.10 N 3.35 2598.26 N 1.50 2676.66 N 1.15 275(.67 N 0.88 2835.78 N 0.74 2913.87 N 1.11 1991.13 N 0.97 306'/.43 N 237.66 W 2391.87 N 5 42 W 241.38 W 2462.97 N 5 37 W 244.71 W 2534.94 N 5 32 W 2~5.80 W 2609.86 N 5 24 W 244.69 W 2687.83 N 5 13 W 243.05 W 276'/.36 N 5 2 W 241.49 W 2846.05 N 4 52 W 239.79 W 2923.72 h 4 42 W 237.59 W 3000.55 N 4 32 W 234.90 W 3076.~,1 N 4 22 W BP EXPLDRATICN Z-21 ¢31-18-11-12) PRUDHOE BAY NORTF SLOPE, ALASKa TRLE MEASURED VERTICAL DEPTH DEFTN 8000.00 6706.59 8100.00 677-: .29 8200.00 6842.20 8300.00 6912.84 8400.00 6984.80 8500.00 7057.95 8600.00 7132.78 8700.00 720E .31 8800.00 7284.13 8900.00 735S .81 9000.00 7434.90 9100.00 751C .40 9200.00 758E 9300.00 766C .39 9400.00 773.q .36 9500.00 7805.95 9600.00 7878.97 9700.00 7952.19 9800.00 8026.01 9900.00 810C .00 10000.00 8173.82 10100.00 824l 10200.00 832C .79 10300.00 8392.73 10400.00 8465.80 10500.00 8531.35 10600.00 860f o32 10700.00 867S .64 10800.00 8751.79 10900.00 8824.35 CDMPLTaTION CATE: 19-MAY-89 11000,00 8896 11100.00 8965.52 llZO0.O0 904] .42 11300.00 911E .09 11400.00 9192.97 INTERPCLaTED V~LUES FOR EVEN 100 SUB- SEA COURSE VERTICAL VERTICAL DEVIATION aZIMUTH SECTION OEPTH DEG MIN CEG MIN FEET 6614.77 6681 6750,,38 6821.02 6892.98 6966,13 7040.96 7116.49 7192.31 7267.99 40 48 N 2 44 E 3092.97 47 21 N 2 48 E 3167.28 45 36 N 2 52 E 3239.56 44 30 N 3 44 E 3310.20 4~ 30 N 4 39 E 3379.56 42 18 N 6 5 E 3447.72 41 2 N d 36 E 3514.05 4(] 51 N '/ 12 E 35'/9.59 40 36 N 8 9 E 3644.78 41 9 N 9 30 E 3710.10 7343.08 7418.58 7494.20 7568.57 7641.54 7714.13 7787.15 7860.37 79_q4.1S 8008.1E 41 17 N 10 26 E 3776.05 4C 37 N 11 25 E 3841.45 41 20 N 11 40 E 3906.65 42 32 N 11 37 E 3973.26 43 32 N 12 20 E 4041.38 43 15 N 18 25 E 4109.42 4'~ 6 N 24 53 E 4175.29 42 38 N 2E 31 E 4239.69 42 13 N 27 45 E 4302.96 42 20 N 29 2 E 4365.51 8082.00 8155.57 8228.97 8301.91 8373.98 844 5.53 8516.5C 8587.82 8659.97 8732.53 42 31 N 30 13 E 4427.72 42 45 N 31 52 E 4489.53 42 45 N 33 32 E 4550.62 4~ 36 N 34 38 E 4611.42 44 1Z N )7 25 E 4672.03 44 27 N 41 28 E 4730.85 44 56 N 43 1 5 E 4787.97 44 7 N 43 54 E 4844.13 43 32 N 43 9 E 4899.57 4] 28 N 41 33 E 4955.56 88C5.06 8877.70 8951.60 9026.27 9101.15 43 34 N 40 5 E 5012.64 42 56 N 37 49 E 5070.77 41 57 N 35 42 E 5129.22 41 30 N 34 44 E 5187.78 41 30 N 34 44 E 5246.35 FEET DOGL SEVE DEG/ KELLY CF MEASURED DEPTh EG RECTANGULAR RITY NORTF/SOUTH 100 FEET DAlE OF SURVEY: BLSHING ELEVATION: ENGINEER: 1.06 3142,92 N 1.88 3211.33 N 1.53 3289.71 N 1.31 336~.37 N 1.29 342c..62 N 1.85 3497.50 N 0.66 3563.42 N 0.62 3628.49 N 0.]0 3693.10 N 1.=-mS 3751.70 N 0.80 3822.74 N 0.82 3887.12 N 1.36 3951.21 N 1.18 4016.68 N 2.12 4083.61 N 6.00 4150.01 N 2.04 4213.27 N 1.16 4274.57 N 0.54 4334.61 N 0.74 4393.76 N PaGE 3 10-MAY-89 91.82 FT 8ARBA 231.60 W 3151,45 N 4 12 W 228.01 W 3225.40 N 4 3 ~ 224.46 W 3297.35 N 3 54 t 220.43 W 3367.59 N 3 45 W 215.37 W 3436.38 N 3 35 W 209.00 W 3503.74 N 3 25 W 201.63 W 3569.12 N 3 14 W 193.77 W 3633.66 N 3 3 W 185.05 W 3697.73 N 2 52 W 175.09 W 3761.78 N 2 40 W 163.59 W 3826.24 N Z 27 W 151.16 W 3890.05 N 2 13 W 137.97 W 3953.61 N I 59 W 124.49 W 4018.61 N 1 46 W 110.51 W 4085.10 N 1 33 W 92.76 W 4151.05 N 1 16 W 67.09 W 4213.80 N 0 54 W 37.41 W 4274.73 N 0 30 W 6.66 W 4334.61 N 0 5 W 25.38 E 4393.83 N 0 19 E .84 4452.42 .46 4510.49 .32 4567.61 .SI 4624.25 .82 4680.42 .94 4734.33 .S4 4786.14 .73 4836.91 .13 4887.01 .02 4937.84 58.70 E 4452.81 N 0 45 E 93.55 E 4511.46 K 1 11 E 130.28 E 4569.47 N I 38 E 168.6.4 E 4627.32 k Z 5 E 209.25 E 4685.09 N Z 3] E 253.66 E 4741.12 N 3 4 E 301.39 E 4795.62 h 3 36 E ]49.71 E 4849.54 N 4 8 E 397.50 E 4903.15 N 4 35 E 443.87 E 4957.75 N 5 ~ E .27 4985.93 .61 504].28 · 19 5097.33 .00 5151.71 · 00 5204.17 N 488.89 E 5013.82 N 5 35 E N 532.20 E 5071.29 N 6 I E N 572.42 E 5129.37 N 6 24 E N 610.72 E 5187.78 I~ 6 45 E N 648.49 E 5246.40 N 7 6 E COORCINATES HORIZ. DEPARTURE EAST/WE.ST DIST. AZIMUTH FEET FEET DEG MIN COHPLTaTION {3a, TE: 19-MAY-89 PAGE 4 EP EXPLDRATICN Z-21 C31-18-I 1-12) FRUDHOE BAY kORTF SLQPEm ALASKA DATE OF SURVEY: lO-HAY-89 KELLY BLSHING ELEVATION: 91.82 FT ENGIkEER: BARBA INIERPELATE9 VJLLES FOR EVEN 1000 FEET OF PEASLRED DEPlH TRLE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEJIAT/ON aZIMUTH DEPTH DEPTH DEPTH DEC- ~I~ VERTICAL D~GLEC- RECTANGULAR COORCINATES HORIZ. DEPARTURE SECTION SEVERITY ~ORTN/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 0.00 C .00 -91.82 0 0 1000.00 1000.10 908.28 0 8 2000.00 2000.08 1908.24 0 21 3000.00 299S.72 2907.90 4 2 4000.00 3955.81 3847.99 25 47 5000.00 4'/04.70 4614-88 4000.00 538{3.70 5288.813 44 29 7000.00 6061.98 5970.14 44 29 8000.00 6704.59 6614.7'/ 44 48 9000.00 7434.90 7343.08 41 17 N 0 0 E 0.00 S 1E 17 W 0.86 N 7.q 39 E 0.59 N 2 56 E 8.24 N C 53 W 277.09 N 8 12 W 912.40 N $ 41 W 1622.69 N 2 56 W 2334.79 N 2 44 E 3092.97 N 10 26 E 3776.05 0.00 0.00 0.16 2.88 4.92 0.33 .0.54 0.35 1.06 0.80 0.00 N 0.00 E 0.00 N 0 0 E 0.92 N 0.44 W 1.02 N 25 19 V ~, C.06 N 4.46 E 4.46 N 89 12 , , '/-53 N 6.41 E 9.89 N 40 25 E" 274.20 N 24.00 E 277.24 N 4 58 E 924.36 N 45.21 W 925.47 N 2 4.8 W 1653.73 N 161.80 W 1661.62 N 5 35 W 2380.04 N 237.66 W 2391.87 N 5 42 W 3142.92 N 231.60 W 3151.45 N 4 12 W 3822.74 N 163.59 W 3826.24 N 2 27 W 10000.00 8173.82 8082.0C 42 31 11000.00 889~E.88 8805.0d 43 34 11400.00 9192.97 9101.15 41 30 N 3C 13 E 4427.72 N 4(I 5 E 5012.64 N 34 44 E 5246.35 0.84 1.27 0.00 4452.42 N 58.70 E 4452.81 N 0 45 E 4,98cj.93 N 488.89 E 5013.B2 N 5 3E E 5204.17 N .448.49 E 5246.40 N 7 6 E BP EXPLO~ATICN Z-21 (31-18-11-12) PRUDHOE BAY kORTI~ SLOPEr ALASKA CDMPLTaTIDN O.&TE: 19-MAY-89 PaGE 5 DATE OF SURVEY: lO-t~AY-89 KELLY BLSHING ELEVATION: 91.82 FT ENGINEER: BARBA ]NTERPCJLaTED V,OLIJES FOR EVEN 100 FEET £F SIJB-SEA DEPTH TRbE SUB-SEA COURSE MEASURED VERTZCaL VERTICAL DEVIaTiON JZIMUTH DEPTH DEFTH DEPTH DEG MIN EF~C- MIN 0.00 C.O0 -S1.82 91.72 91.82 0.00 191.72 191.82 lCO.O0 291.72 291.82 200.00 391.72 391.82 300.00 491.72 491.82 400.00 591.72 591.82 500.00 691.72 691.82 600.00 791.72 791.82 700.00 891.72 891.82 800.00 991.72 991 ..82 900.00 1091.72 1091.82 1000.00 1191.72 1191.82 1100.00 1291.72 1291.82 1200.00 1391.72 1391.82 1300. O0 1491.73 1491.82 1400.00 1591.73 1591.82 1500.0C 1691.73 1691.82 1600.00 1791.74 1791.82 1700.00 1891.74 1891.82 1800.0~ 1991.74 1991.82 1900.00 2091.74 2091.82 2000.00 2191.74 2191.82 2100.00 2291.74 2291.82 2200.00 2391.75 2391.82 2300.00 2491.75 2491.82 2400.00 2591.75 2591.82 2500.00 2691.75 2691.82 2600.00 2791.75 2791.82 2700.00 2891.77 2891.82 2800.00 2992.06 2991.82 29(~ O. O(! ~ 49 3092.91 3091.82 3000.00 8 48 3194.62 3191.B2 3100.00 12 12 3297.45 3291.82 3200.00 14 36 3401.26 3391.82 3300.00 16 21 3505.54 3491.82 3400.00 1d 15 3609.61 3591.82 3500.00 16 1 3713.78 3691.82 3600.00 16 39 3818.71 3791.82 3700.00 1E 47 3925.52 3891.82 3800.00 22 25 N 2 29 E N 3 25 E N I 11 E N 1 53 E N 1 45 E N 2 20 E N 4 14 E N E 40 E N 9 20 E N 2 47 E VERTICAL DCGLEG RECTANGULAR COORDINATES HDRIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DZST. AZIMUTH FEET DEG/IOO FEET FEET FEET DEG HIN 0.00 0.~0 0.00 N 0.00 E -0.02 0.00 0.02 S 0.06 E 0.07 0.00 0.05 N 0.17 E 0.23 0.00 0.18 N 0.37 E 0.48 0.11 0.42 N 0.56 E 0.77 0.05 0.71 N 0.56 E 0.99 0.00 0.95 N 0.41 E 1.15 0.00 1.14 N 0.21 E 1.19 0.02 1.21 N 0.04 W 1.09 0.00 1.14 N 0.28 W 0.88 0.00 0.94 N 0.43 W 0.64 0.28 0.71 N 0.48 W 0.42 0.17 0.46 N 0.37 W 0.26 0.00 C.27 N 0.08 W 0.20 0.00 0.16 N 0.36 E 0.19 0.00 ~.09 N 0.82 E 0.07 O.O0 0.09 S 1.32 E -0.03 0.13 C.29 S 2.17 E 0.07 0.36 0.30 S 3.11 E 0.32 0.03 ~.13 S 3.79 E 0.57 0.08 0.05 N 4.41 E 0.77 0.17 0.18 N 4.98 E 0.85 0.43 0.20 N 5.46 E 0.86 0.19 C.15 N 6.02 E 0.84 0.00 0.07 N 6.46 E 0.83 0.00 C.04 N 6.64 E 0.54 0.02 0.26 S 6.72 E -0.14 0.42 0.93 S 6.54 E -1.02 0.04 1.76 S 6.15 E 0.11 3.10 0.61 S 6.02 E 0.00 N 0 C E 0.06 S 67 41 E ~, 0.18 N 74 4~ E 0.41 N 63 28 E 0.69 N 53 12 E 0.91 N 38 21 E 1'04 N 23 8 E 1.16 N 10 22 E 1.21 N I 57 W 1.17 N 13 57 W 1.04 k 24 32 W 0.85 N 34 16 W 0.60 N 38 52 W 0.28 N 16 4 W 0.40 N 65 59 E 0.83 N 83 35 E 1.33 S 86 I E 2.19 S 82 26 E 3.12 S 84 28 E 3.80 S 88 3 E 4.41 N 89 22 E 4.99 N 87 58 E 5.47 N 87 56 E 6.03 N 88 35 E 6.46 N 89 22 E 6.64 N 89 40 E 6.72 S 87 47 E 6.60 S 81 56 E 6.40 S 73 59 E 6.06 S 84 13 E 7.41 2.37 d.70 N 20. 3'/ 2.70 1S.65 N 38.80 2.87 38.12 N 62.61 1.77 62.02 N 90.37 1.15 8~.88 N 119.82 0.69 119.41 N 148.60 O.E5 148.20 N 177.74 1.53 171.22 N 209.49 2.92 208.66 N 246.91 5.07 245.84 N 6.37 E 9.24 N 43 33 E 7.19 E 20.93 N 20 5 E 7.97 E 38.94 k 11 48 E 8.67 E 62.6Z N 7 57 E 9.51 E 90.38 N 6 2 E 10.57 E 119.88 N 5 3 E 12.18 E 148.70 N 4 41 E 14.93 E 177.85 N ~ 48 E 19.51 E 209.57 N 5 20 E 23.68 E 246.98 N 5 30 E COMPUTATION DATE: 19-MAY-89 BP EXPLORATION Z-21 C31-18-11-123 PRUDNOE 8AY NORTF SLOPEr ALASKA KELLY DATE BLSHING OF SURVE Y: ELEVATION: ENGINEER: ME TR~E ASUR ED YERTZCAL DEPTH DEPTH 4035.77 3991.82 4150.19 4091.82 4269.14 4191.82 4396.83 4291.82 4535.17 4391.82 4681.16 4491.82 4828.65 4591.82 4977.71 4691.82 5128.01 4791.82 5278.90 4891.82 5428.48 4991.82 5576.73 5091.82 5723.89 5191.82 5870.49 5291.82 6016.15 5391.82 6162.90 5491.82 6311.83 5591.82 (461.92 5691.82 6609.37 5791.82 6755.24 5891.82 6899.58 5991.82 7042.52 6091.82 7185.73 6191.82 7338.52 6291 7503.87 6391.82 7666.16 6491.82 7823.87 6591.82 ?977.56 6691.82 8127.20 6791.82 8270.42 6891.82 8409.68 6991.82 8545.50 7091 8678.18 7191.82 8810.13 7291 8942.60 7391 g075.47 7431.82 9207.72 7591 9342.86 7691.~2 9480.59 7791 9617.58 7891.82 INTERPCLATED VALUES FOR SUB-SEA COURSE VERIICAL DENIATION aZIMUTH DEPTH DEG MI) ~EG MIN 3900.00 2"/ 23 N 0 57 W 40130.00 .30 26 N 0 16 W 4100.00 35 26 N 4 20 W 4200.00 41 5 N 6 59 W 4300.00 46 4 N 1 7 W 4400.00 46 56 N 7 37 W 4500.00 4'/ 32 N '/ 57 W 4600.00 48 5 N 8 9 W 4700.00 48 32 N 8 34 W 4800.00 4~) 18 N 8 44 W 4900.00 4'/ 53 5000.00 4'/ 25 5100.00 47 5 5ZO0.OO 46 54 53(} O. Ol: 46 29 5400.00 4'/ 29 5500.00 4E 16 5600.00 47 40 5700.00 41 1 58()0.00 46 26 N 9 0 W N 9 14 W N 9 29 W N 9 34 W N 9 42 W N 10 30 W N 11 8 W N 4 28 W N 2 6 W N 2 30 W 5900.00 45 52 6000.0(2 45 22 6100.00 46 53 6200.00 51 23 6300.00 52 49 6400.00 51 13 650o.oo 45 58 6600.00 4E 58 67C0.00 46 51 6800.0{3 44 49 N 2 44 W N 3 0 W N 2 15 W N 0 46 E N 1 7 E N I 16 E N 1 54 E N 2 40 E N 2 48 E N 3 28 E 6900.00 43 25 70C0.0{3 41 34 7100.0C 4C 54 7200.00 4C ?7 73C0.0C 41 24 74C0.0C 4C 46 75(10.0C 4! 26 7600.0C 4~_ 5 7700.00 43 22 78C0.00 43 5 N 4 48 N 621 N 1 3 N E 15 N c. 5q N 1111 N 11 39 N 11 39 N 16 51 N 25 22 EVEN 100 VERTICAL SECTION FEET 292.88 348.02 411.52 488.81 581.49 684.64 789.52 896.37 1004.65 1113.53 '1220.62 1325.85 1429.51 1532.35 1633.92 1736.68 1841.81 1949.5'/ 2056.46 2161.30 2263.97 2364.65 2465.69 2580.16 2711.17 2838.35 2959.79 3076.12 3187.14 3289.42 ~386.22 3473.11 3565.30 3651.37 2738.18 3825.48 3911.72 4002.30 4096.36 4186.70 FEET OF SUB-SEA DEPTH DOGLEG RECTANGULAR COORD SEVERITY NORTH/SOkTH EAST/ DEG/IO0 FEET FEET INATES flORIZ. WEST DIST. FEET 4.17 292.13 N 23.7 2.69 34'/.71 N 23.3 5.76 411.96 N 20.9 3-$7 490.80 N 12.5 2.58 585.57 N 0.7 0.64 691.08 N 12.7 0.47 798.47 N 27.4 0.-=4 901.93 N 42.8 0.25 1018.95 N 59.1 0.42 1130.65 N 76.1 5 E 293.10 N 8 E 348.50 N 9 E 412.49 N 9 E 490.96 N 7 E 585.57 N 5 W 691.19 N 6 W 798.94 N 5 W 908.95 N 8 W 1020.67 N 8 W 1133.22 N 0.32 124C.57 N 93.3 0.'/9 1348.63 N 110.6 0.33 1455.15 N 128.2 0.43 1560.86 N 146.0 0.53 1665.27 N 163.7 0.61 177i.03 N 182.5 0.86 1875.40 N 203.3 4../1 1985.96 N 220.2 0.48 2098.19 N 225.0 0.45 2204.30 N 229.3 PAGE 6 10-MA¥-89 91.82 FT BaRBA 0.25 2300.28 N 234.1 0.23 241C.29 N 239.2 3.35 2512.67 N 244.3 3.39 2628.10 N 245.5 1.14 275S.75 N 242.9 0.81 288./. 53 N 240.4 1.02 3009.43 N 236.9 0.63 3126.05 N 232.4 1.18 3231.22 N 227.0 1.23 3330,.60 N 221.7 DEPARTURE AZIMUTH DEG MIN 1.36 3436.26 N 1.48 352'1.71 N 0.4 8 3614 . 31 0.74 36 9cJ .63 N 0.65 3785.41 N 0.~6 3871.41 N 1.41 3956.19 N 1.]6 4045.~2 N 5.69 41 31.33 N 1.44 4224.15 N 4 38 E 3 50 E 255[ 1 28 E 0 4 E 1 3 W I 58 W 2 42 W 3 19 W 3 51 W 5 W 1244.08 N 4 18 W 2 W 1353.16 N 4 41 W 7 W 1460.79 N 5 2 W 6 W 1567-,68 N 5 20 W 7 W 1673.31 N 5 36 W 2 W 1780.41 N 5 53 W 3 W 1890.37 N 6 10 W 4 W 2002.11 N 6 18 W 4 W 2110.23 N 6 7 W 4 W 2216.20 N 5 56 W 0 W 2320.12 N 5 47 W 3 W 2422.14 N 5 40 W 2 W 2524.52 N 5 33 !~, 4 W 2639.55 N 5 20 W 9 W 2770.43 N 5 1 W 0 W 2897.52 N 4 45 W 9 W 3018.75 N 4 30 W 0 W 3134.67 N 4 15 W 4 W 3245.17 N 4 0 W 2 W 3346.95 h 3 47 W 214.83 W 3~42.97 205.69 W 3533.70 195.53 W 3619.60 184.12 W 3704.20 170.32 W 3789.24 154.29 W 3874.48 136.94 W 3958.56 118.61 W 4046.96 96.81 W 4138.47 ,62.01 W 4224.60 3 34 W h 2 20 W h 3 5 W N 2 50 W N 2 34 W N 2 16 W N 1 58 W N 1 40 W N I ZOW N 0 50 W COMPLTaTION DRTE: 19-MAY-89 PaGE 7 BP EXPLORATICN Z-21 C31-18-11-12) PRUDI~ gE EAY NORTF SLOPEr ALASKA DATE OF SURVEY: lO-MAY-89 KELLY BLSHIkG ELEVATION: ~1.82 FT ENGINEER: 8.a RBA INTERPCLATED VALUES FOR EVEN 100 FEET OF SCB-SEA DEPTH TRIJE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION ~ZIMUTH DEPTH DEFTH DEPTH DE~ HIE EEG FIN VERTICAL OCGLEG RECTANGULAR COORgINATES HORIZ. DEPARIURE SECTION SEVERITY kORTI'/SOIJTH EAST/WEST DIST. AZIMUIH FEET DEG/ZO0 FEET FEET FEET DEG MIN 9753.76 7991.82 7900.00 42 21 9888.93 8091.81 8000.00 42 20 10024.44 8191.82 8lO0.OO 42 33 10160.55 8291.82 8200.00 42 46 10297.37 8391.82 83{30.00 43 35 10436.33 8491.82 84{30.00 44 20 10576.69 8591.82 8500.00 44 57 10716.95 8691.87 8600.00 44 0 10855.18 8791.82 87C0.00 4] 26 10993.02 8891.82 8800.00 42 33 N 27 10 E 4273.82 N 28 55 E 43§8.61 N 30 32 E 4442.87 N 32 56 E 4526.62 N 34 36 E 4609.82 N 38 49 E 4693.7! N 43 12 E 4774.70 N 43 54 E 4853.54 N 42 15 5 4930.32 N 40 13 E 5008.61 0.90 0.86 1.17 0 2.'/6 0.95 0 1.17 1.24 430d.98 N 21.01 W 4307.03 N 0 16 W 4387.24 N 21.76 E 4387.30 N 0 17 E 446E.67 N 67.06 E 4467.18 N 0 51 E j 4545.20 N 115.61 E 4546.67 N 1 27 E ' 4622.75 N 167.62 E 4~25.79 N 2 4 E 4700.38 N 224.88 E 4705.76 N 2 44 E 4774.13 N 290.11 E 4782.94 N 3 28 E 4845.41 N 357.88 E ~858.60 N 4 13 E 4914.89 N 423.29 E 4933.08 N 4 55 E 498E.25 N 4~5.79 E 5009.86 N 5 33 E 11130.33 8991.82 8900.00 42 31 11264.92 9091.82 9000.00 41 37 11400.00 9192.97 9101.15 41 30 N 37 3 E 5088.49 N 34 57 E 51~7.25 N 34 44 E 5246.35 2.06 1.15 0.00 505S.63 N 544.67 E 5088.86 N 5 8 6 5132.63 N 597.44 E 5167.28 N 6 38 E 520~.17 N ~48.49 E 5246.40 N 7 6 E SCHLUMBERGER O I REC T I ONAL SURV E Y COMPANY BP EXPLORAT ! 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"'?"'?"'?"'? ~ ! I ~ ~ ~ ~ ........ ,~"'?"?"?"' t "' ?"'? -'?"'? ! ~ ! ! ! ~ ~ ~ ....... ?"'? "'?"-:'"' ?"'? "'?'" ?"'"~ ~ ~ I ~ ...... ?'"? ""~"'? "'~'"? ""~'"'?"'"~'"1~ "'? "'? "'"~ "' ? '"?'" ? "'? '" ? ~ i i ! I ~ ~ '. ~ / ! ~ ~ -" I -" i ] ~"' ? ....... ?'"?"'?~'? ~ ! ! ! I ] i ~ ~ "'I'"'?"'?'"?"'? 7000 7. PROJECTION ON VERTICAL PLANE 7. - 187. $CALEO IN VERTICAL DEPTI-~ HORIZ SCALE = I/1000 IN/FT [ TE£ECO1 Teleco Oilfield Se~..ss of Alaska Inc. 6116 Nielson Way Anchorage, AK 99502 (907) 562-2646 May 5, 1989 JOB #695 BP EXPLORATION (ALASKA) INC. WELL: Z-21 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 A .~lll,'t COMPANY TELECO OILFIELD SERVICES JOB #695 SURVEY CALCULATIONS Date Page Company: BP EXP. Well: Z-21 Location: EWE Rig: AUD #2 TELECO Job # 695 TAK Grid Correction: Magnetic Declination: Total Correction: Proposed Direction: 0.00 degrees 30.80 degrees 30.80 degrees 9.07 degrees RADIUS OF CURVATURE CALCULATION MEAS DIRECTION TRUE VERTICAL COORDINATES CLOSURE DOG LEG DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION N/S E/W DIST ANGLE SEVERITY feet deg deg deg/min feet feet feet feet feet deg deg/100' **************************************************************************************************** 'TIE-IN 2650.00 0.7 221.0 S 41 00 W 2649.92 5.97 1.64S 9.81E 9.94 S 80.509E 0.000 TELECO MWD 3336.00 15.5 2.7 N 02 42 E 3328.82 71.88 71.87N 5.73E 72.10 N 4.564E 2.564 3517.00 15.7 3.4 N 03 24 E 3503.12 120.42 120.61N 8.33E 120.90 N 3.953E 0.192 3702.00 16.3 7.6 N 07 36 E 3680.91 171.44 171.50N 13.23E 172.01 N 4.413E 0.685 3141.00 10.5 3.0 N 03 00 E 3138.88 28.28 28.07N 3.55E 28..30 N 7.221E 3.136 2927.00 3.7 3.4 N 03 24 E 2926.67 1.82 1.51N 2.07E 2.56 N 53.791E 1.591 TELECO Job # 695 TAK 4/MAY/89 Page 2 MEAS DIRECTION TRUE VERTICAL COORDINATES CLOSURE DOG LEG DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION N/S E/W DIST ANGLE SEVERITY feet deg deg deg/min feet feet feet feet feet deg deg/100' **************************************************************************************************** 3876.00 20.6 7.9 N 07 54 E 3845.88 226.61 226.18N 20.67E 227.12 N 5.223E 2.524 3970.00 24.5 0.9 N 00 54 E 3932.65 262.58 262.16N 23.44E 263.20 N 5.111E 4.955 4061.00 28.7 2.3 N 02 18 E 4013.97 303.03 302.94N 24.58E 303.94 N 4.640E 4.764 4152.00 30.0 1.6 N 01 36 E 4093.25 347.35 347.58N 26.10E 348.56 N 4.295E 1.382 4246.00 34.3 358.1 N 01 54 W 4172.82 396.70 397.58N 25.97E 398.43 N 3.738E 4.983 4371.00 39.9 354.2 N 05 48 W 4272.48 470.15 472.77N 20.91E 473.23 N 2.533E 4.857 4463.00 43.4 354.6 N 05 24 W 4341.21 529.29 533.61N 14.94E 533.82 N 1.605E 3.815 4559.00 46.9 354.6 N 05 23 W 4408.90 595.18 601.35N 8.56E 601.41 N 0.816E 3.646 4743.00 46.8 353.2 N 06 48 W 4534.74 724.74 734.82N 5.68W 734.84 N 0.443W 0.562 4928.00 47.6 353.2 N 06 47 W 4660.44 855.35 869.64N 21.69W 869.91 N 1.429W 0.433 5111.00 48.3 353.2 N 06 48 W 4783.01 986.10 1004.61N 37.73W 1005.32 N 2.151W 0.382 5390.00 47.6 352.8 N 07 12 W 4969.87 1185.18 1210.24N 62.97W 1211.87 N 2.979W 0.273 5670.00 47.0 353.5 N 06 30 W 5159.76 1383.05 1414.54N 87.51W 1417.24 N 3.540W 0.282 5948.00 46.7 352.8 N 07 12 W 5349.88 1578.09 1615.90N 111.70W 1619.76 N 3.955W 0.213 6132.00 47.4 351.4 N 08 36 W 5475.25 1706.90 1749.30N 130.21W 1754.14 N 4.257W 0.674 6321.00 48.2 350.0 N 10 00 W 5602.21 1839.77 1887.46N 152.84W 1893.64 N 4.630W 0.693 6423.00 48.1 356.3 N 03 42 W 5670.26 1912.79 1962.86N 161.89W 1969.52 N 4.715W 4.601 TELECO Job # 695 TAK 4/MAY/S 9 Page 3 MEAS DIRECTION TRUE VERTICAL COORDINATES CLOSURE DOG LEG DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION N/S E/W DIST ANGLE SEVERITY feet deg deg deg/min feet feet feet feet feet deg deg/100 ' **************************************************************************************************** 6698.00 46.8 359.9 N 00 06 W 5856.22 2111.64 2165.30N 168.61W 2171.85 N 4.453W 1.074 6981.00 45.6 359.9 N 00 05 W 6052.09 2313.30 2369.55N 168.89W 2375.56 N 4.077W 0.424 7261.00 49.0 1.6 N 01 36 E 6241.95 2516.87 2575.27N 166.18W 2580.63 N 3.692W 1.293 7355.00 51.9 3.7 N 03 42 E 6301.80 2588.89 2647.66N 162.83W 2652.66 N 3.519W 3.533 7548.00 52.3 2.7 N 02 42 E 6420.23 2740.47 2799.80N 154.32W 2804.05 N 3.155W 0.482 7737.00 50.6 3.0 N 03 00 E 6537.78 2887.59 2947.61N 146.96W 2951.27 N 2.854W 0.908 7924.00 49.2 4.1 N 04 06 E 6658.12 3030.05 3090.46N 138.10W 3093.55 N 2.559W 0.915 8208.00 45.4 4.8 N 04 48 E 6850.68 3238.05 3298.51N 8395.00 43.7 6.2 N 06 12 E 6983.94 3368.97 3429.08N 121.91W 3300.76 N 109.34W 3430.83 N 2.117W 1.350 1.826W 1.050 8568.00 41.3 7.9 N 07 54 E 7111.48 3485.76 3545.06N 94.99W 3546.34 N 1.535W 1.538 8767.00 40.6 9.7 N 09 42 E 7261.78 3616.18 3673.95N 75.04W 3674.71 N 1.170W 0.689 9049.00 41.0 11.8 N 11 48 E 7475.25 3800.35 3854.96N 40.67W 3855.18 N 0.605W 0.507 9238.00 41.7 11.8 N 11 48 E 7617.13 3925.08 3977.19N 15.11W 3977.22 N 0.218W 0.370 9411.00 43.5 14.6 N 14 36 E 7744.47 4041.86 4091.18N 11.62E 4091.20 N 0.163E 1.508 9506.00 43.2 21.7 N 21 42 E 7813.55 4106.21 4153.11N 31.93E 4153.23 N 0.441E 5.138 9707.00 42.6 28.7 N 28 42 E 7960.79 4237.57 4276.83N 90.15E 4277.78 N 1.208E 2.389 9895.00 42.4 30.1 N 30 06 E 8099.40 4356.66 4387.48N 152.49E 4390.13 N 1.991E 0.514 TELECO Job # 695 TAK 4/MAY/89 Page 4 MEAS DIRECTION TRUE VERTICAL COORDINATES CLOSURE DOG LEG DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION N/S E/W DIST ANGLE SEVERITY feet deg deg deg/min feet feet feet feet feet deg deg/100' 10176.00 42.8 34.7 N 34 42 E 8306.24 4531.26 4548.03N 254.38E 4555.14 N 3.201E 1.117 10269.00 43.4 36.8 N 36 48 E 8374.14 4588.04 4599.60N 291.50E 4608.83 N 3.626E 1.672 10363.00 44.0 38.5 N 38 30 E 8442.10 4645.07 4651.01N 331.17E 4662.79 N 4.073E 1.403 10479.00 44.3 41.7 N 41 42 E 8525.33 4714.29 4712.81N 383.21E 4728.36 N 4.649E 1.939 CL~U 0 i I ~ i m i d S~.rv ~ c~s VERTICAL PROCECTION 0 2000 9000 50OO 5000 7000 go00 10000 i ~ 000 1000 2000 3000 4.000 5000 6000 VERTIC^L SECTION (?t) cas z~O00 ; SO0 800 EAST (-Ft) GREAT LAND DIRECTIONAL DRILLING INC. REPORT OF SUB-SURFACE DIRECTIONAL SURVEY mmmmmmmmmmmmmmmm~mm~~~~~~~~~ BP EXPLORATION # Z-21 i~.~ ........................ ................. WELL NAME WEST EILEEN LOCATION AL489-D16 SINGLE SHOT & MWD 5/15/89 JOB NUMBER TYPE SURVEY DATE DIRECTIONAL ..~ ,'-'T'-.. TOM DUlU-N SUPERVISOR mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmNemmmmmmm~mmmmmm NAME T I TLE B I GNATURE 531 FT 10479 FT mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm DEPTH INTERVAL FROM TO 4/17/89 5/04/89 ,mmmmmmmmmmmm 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 1 ~aska Oi~ & Gas ~ons. GREAT LAND DIRECTIONAL. DRILL.]NG~ Client .............. : BP EXPLORATION Well ................ : WEST E]LEEN ~ Z-2] Vertical Section at.: N 9.07 E Magnetic Declination: 30 deg 48 m]n E Data file name ...... : B:WZ21D.DAT RECORD OF SURVEY (We]] assumed vertical to MD of 5115185 Computation: RAD]US OF CURVATURE Su=vey date: 4/21/89 Method ..... : SINGLE SHOT & MWD RKB Height.: 91.8 ft 0.0! MEAS DRIFT TRUVERT SUBSEA SECT]ON D]RECTION RELAT]VE COORDINATES ANGL.E FROM WELL.-HEAD ~PTH DG MN DEPTH DEPTH D]ST 0 O 0 0.00 -91.88 0.00 N 0.00 E 0.00 N 531 0 0 531.00 439.18 0.00 N 0.00 E 0.00 N 995 0 0 995.00 903.18 0.00 N 0.00 E 0.00 N ]475 0 30 1474.99 1383.]7 1.88 N 35.00 E 1.72 N ~0~0 0 ~S 2019.9~ 1928.].4 ~.~0 S 75.00 E 3.&2 N 0.00 E 0.00 E 0.00 E 1.20 E &.4S E 2~73 0 30 2q72.93 2381.]1 2~50 0 ~S 2~49.92 2558.].0 2927 3 ~8 292~.~7 283~.85 31~1 10 30 3138.89 3047.07 333~ 15 30 3328.83 3237.01 1.86 S l&.O0 E 0.01 S 41.00 W :1.91 N 3.40 E 28.39 N 3.00 E 71.98 N 2.70 E 0.31 N 1.50 S 1.&7 N 28.25 N 72.05 N 9.82 E 9.~2 E !.66 E 3.]5 E 5.33 E 3517 IS 48 3503.12 3411.30 3702 ]& 18 3680.9] 3589.09 387& 20 42 3845.87 375q.05 3970 24 30 3932.~ 38~+0.82 120.54 N 3.40 E 171.58 N 7.60 E 226.76 N 7.90 E 262.74 N 0.90 E 303.20 N 2.30 E 120.80 N 171.70 N 226.~0 N 262.38 N 303.18 N 7.93 E 12.83 E 20.27 E 23. OZ~ E 24.18 E 4152 30 0 4093.23 4001.41 ~2~t6 34 18 4:172.80 4080.98 ~+371 39 S~ 4272.46 4180.6~ 1tS59 ~6 S~ q408.89 ~317.07 3~7.52 N 1.60 E 396.88 N 1.90 W 470.33 N 5.80 W 529.47 N 5.40 W 595.3& N 5.40 W 347.82 N 397.82 N k73.0] N S33.85 N 601.60 N 2S.70 E 25.57 E 20.51 E 1~. S~ E 8.1~ E ~743 46 ~8 iS34.73 ~4~2.91 724.92 N 6.80 W 735.07 N ~928 ~7 3~ ~&~0.42 45~8.~0 855.~8 N ~.80 W 8&9.8~ N 5111 48 18 ~782.99 ~691.17 986.19 N .6.80 W 100~.79 N S390 47 3~ qg~9.8& ~878.04 1185.27 N 7.20 W 1210.~2 N S&70 A7 0 S159.7~ S0~7.92 1383.15 N ~.SO W 1411.72 N 6.13 W 22.20 W 38.29 W 63.53 W 88.08 W CLOSURE DISTANCE DG MN S 0.00 N 0 0 0 E 0.00 N 0 0 0 E 0.00 N 0 0 0 E 2_ 09 N 35 0 0 E 7.~0 N 60 39 8 E 9.82 N 88 ]0 40 E 9.53 S 80 S8 28 E 2.3~ N 4~ S3 7 E 28.42 N 6 21 32 E 72.2~t N 4 13 47 E 121.O& N 3 ~S 14 E 172.18 N ~ 16 21 E 227.30 N S 6 59 E 2&3.39 N S :1 6 E 30q.14 N ~ 33 36 E 3~8.77 N 4 13 33 E 398.6~t N 3 40 39 E 473.45 N 2 28 58 E 534.05 N ] 33 38 E 601.65 N 0 46 31E 735.10 N 0 28 39 W 870.1~ N I 27 12 W 1005.52 N 2 10 56 W 1212.08 N 3 0 17 W ]4:17.46 N 3 33 ~tS W DOG L. EC deg/1.00 O.OOC O.OOO O.OOC O. IOA O. OZld O. OSE 0.141 ]. 12~4 3.13] 2. 566 O. 16E O. 32A 2. 525 A. 735 1. 332 ~. 72E ~. 66C 3.81C 3. 0.4.0E O. ~32 0. 382 O. 262 O. 252 WEST EIL.EEN 17 Z--21 S/15/89 RECORD OF SURVEY MEAS DRIFT TRUVERT SUBSEA SECTION DEPTH DG NN DEPTH DEPTH DIST 5948 h6 42 5349.87 5258.05 1578.19 N 7.20 W 1616.09 N 6132 47 24 5475.24 5383.42 1707.00 N 8.60 W 1749.49 N 4321 48 12 5602.19 5510.37 1839.87 N 10.00 W 1887.65 N ,423 48 6 5670.24 5578.42 1912.90 N 3.70 W 1963.05 N 6698 46 48 5856.20 5764.38 2111.75 N 0.10 W 2165.49 N DIRECTION RELATIVE COORDINATES ANGLE FRON WELL-HEAD 112.27 W 130.78 W 153.40 W 162.46 W 169.18 W 698] 45 36 6052.08 5960.26 2313.39 N 0.10 W 2369.75 N 726] 49 0 6241.93 6150.11 2516.97 N ].60 E 2575.47 N 7355 51 54 6301.78 6209.96 2588.98 N 3.70 E 2647.86 N 7548 52 24 6420.21 6328.39 2740.57 N 2.70 E 2800.02 N 7?37 50 42 653?.?3 64h5.91 2887.71 N 3.00 E 2947.84 N 169.53 W 166.84 W 2.63.49 W 154.98 W 147.62 W 792q ~9 12 6658.05 6566.23 3030.]9 N 4.10 E 3090.71 N 8808 45 24 6850.61 6758.79 3238.19 N 4.80 E 3298.75 N 8395 h3 42 6983.87 6892.05 3369.]1 N 6.20 E 3429.33 N 8568 4] 18 7111.41 7019.59 3485.90 N 7.90 E 3545.31 N 8767 40 36 726].71 7].69.89 3616.32 N 9.70 E 3674.19 N 138.76 W 122.57 W 110.00 W 95.65 W 75.70 W 9049 41 0 7475.].8 7383.36 3800.49 N 11.80 E 3855.21N ~238 42. 42 7&17.06 7S2S.2~ 392S.22 N 11.80 E 3977.44 N ~S06 43 12 7814.80 7722.98 ~104.2S N 21.70 E 41S0.43 N 9707 42 36 79~2.04 7870.22 423S.61 N 28.70 E ~274.1S N 9895 42 24 8100.65 8008.83 ~354.70 N 30.]0 E 438~.80 N 41.33 W 15.80 W 36.27 E 94.49 E 156.83 E 10176 42 48 8307.50 8215.68 4529.31 N 34.70 E 4545.35 N 10269 43 24 8375.40 8283.58 4586.08 N 36.80 E 4596.92 N 20363 44 0 8443.36 8351.54 4643.11 N 38.50 E 4648.34 N 10479 4~ 18 8526.59 8434.77 4712.70 N 40.70 E 4710.59 N 258.72 E 295.85 E 335.51E 387.01E CL.OSURE DISTANCE DG MN S 1619.99 N 3 S8 26 W ]754.37 N 4 16 30 W 1893.88 N 4 38 46 W 1969.76 N 4 43 52 W 2172.09 N h 28 2 W 2375.80 N 4 S 31 W 2580.87 N 3 42 23 W 2652.90 N 3 31 59 W 2804.30 N 3 10 S W 2951.54 N 2 52 1W 3093.82 N 2 34 14 W 3301.03 N 2 7 41W 3431.09 N 1 50 14 W 3546.60 N ]. 32 44 W 3674.97 N I 10 49 W 3855.43 N 0 36 51W 3977.47 N 0 13 39 W ~].50.59 N 0 30 2 E ~275.20 N I 15 59 E ~387.6] N 2 2 54 E 4552.71 N 3 IS 28 E 4606.43 N 3 40 56 E 4660.43 N 4 7 42 E 4726.46 N 4 41 48 E DOG L. EC de.g/lOC O. 177- O. 563 O. 59C 3. 422 O. 84 ~ O. 42A ]. 262 3.38.~ 0. 906 O. 87[ 1. 342 O. 97~ 1. 452 O. 52[ O. O. 37( 1.815 1. O. 3SE 0. 765 1.24~ 1.08~ 0.96~ WEST EILEEN ~ Z-21 DATA ]NTERPOL.ATED FOR EVEN 100 FEET OF SUBSEA DEPTH S/~S/8~ MEAS. DEPTH ]92 ( 3~2 TRU VERT SUB SEA MD-TVD VERTICAl.. DEPTH DEPTH DIFF. CORRECT 92 0 0 0 192 ]00 0 0 2~2 200 0 0 392 300 0 0 ~2 ~00 0 0 S92 S92 SO0 0 0 ~92 692 ~00 0 0 792 792 700 0 0 892 892 800 0 0 992 992 900 0 0 1092 1192 ]292 1392 ]492 ]792 ]892 1992 2792 2892 2993 1092 1000 0 0 1192 1100 0 0 ].292 1200 0 0 1392 1300 0 0 1492 1400 0 0 1592 1500 0 0 ].~92 1~00 0 0 ]792 1700 0 0 1892 1800 0 0 ].992 1900 0 0 2092 2000 0 0 2192 2100 0 0 2292 2200 0 0 2392 2300 0 0 2~92 2~00 0 0 2592 2500 2~92 2~00 2792 2700 2892 2800 2992 2900 RELATIVE COORDINATES FROM WELL--HEAD 0.00 N 0.00 E 0.00 N 0.00 E 0.00 N 0.00 E 0.00 N 0.00 E 0.00 N 0.00 E 0.00 N 0.00 E 0.00 N 0.00 E 0.00 N 0.00 E 0.00 N 0.00 E 0.00 N 0.00 E 0.35 N 0.2/~ E 0.70 N 0.49 E 1.0~ N 0.74 E 1.J, 2 N 0.99 E 1.77 N 1..3~ E 2.]2 N 2.33 E 2.J~8 N 3.29 E 2.83 N q.2S E 3.18 N 5.21 E 3.53 N c~.18 E 3.10 N c~.98 E 2.37 N 7.73 E 1.6~ N 8.i~7 E 0.91 N 9.21 E O. 12 N 9.77 E 0.90 S 9.55 E ].02 S 8.2~, E 0.13 N S.Z~h E 1.27 N 2.~4 E 9.83 N 2.12 E WEST EIL. EEN ff Z..P1 DATA INTERPOLATED FOR EVEN ]00 FEET OF SUBSEA DEPTH S/15/89 MEAS. DL:PTH 3094 3195 3298 34 01 3[,505 3809 37]4 3819 3928 4038 4150 4270 4397 4535 4880 4827 4975 5124 5273 5422 5570 5717 S883 6010 6].57 6306 6{503 {5749 6894 TRU VERT SUB SEA MD--TVD VERTICAL. DEPTH DEPTH DIFF. CORRECT 3092 3000 2 1 3192 3100 3 1 3292 3200 6 3 3392 3300 9 3 3492 3400 ]3 4 3592 3500 ].7 4 3{592 3{500 22 S 3792 3700 27 S 3892 3800 34 7 3992 3900 44 10 4092 4000 S8 14 4192 4100 78 20 4292 4200 lOS 27 4392 4300 143 38 4492 4400 188 45 4592 4500 235 -47 4{592 4{500 283 48 4792 4700 332 49 4892 4800 381 49 4992 4900 430 49 S092 SO00 478 48 5]92 5100 S25 47 S292 S200 S71 4{5 S392 5300 {518 47 5492 S400 665 47 5592 SSO0 714 49 S692 S600 763 49 S792 5700 811 48 5892 5800 857 46 S992 S900 902 45 RELATIVE COORDINATES FRON WELL--HEAD 22.35 N 2.82 E 40.45 N 3.7{5 E 63.51 N 4.90 E 89.{57 N 6.27 E 117.{54 N 7.?8 E 146.20 N ]0.37 E 175.32 N 13.32 E 208.48 N 17.83 E 245.45 N 21.74 E 292.07 N 23.87 E 347.03 N 25.{57 E 412.17 N 24.{50 E 490.15 N i8.83 E S84.52 N 9.75 E 689.56 N 1.2{5 W 796.30 N 13.43 W 904.42 N 2{5.32 W 1014.51 N 39.48 W ]124.SS N 52.99 W ].234. OS N &{5.37 W 1341. {54 N 1448.70 N 1554.61 N 1660.73 N 1767. S4 N 79.30 W 92.16 W 04.88 W 18.46 W ~33.73 W 1876.37 N 1986.54 N 2095.40 N 2202.{53 N 2306.9] N 151.56 W 163.24 W 166.85 W 169.24 W ]69.42 W WEST EIL. EEN ~ Z--21 DATA ]NTERPOLATED FOR EVEN 100 FEET OF SUBSEA DEPTH 5/15/89 MEAS. TRU VERT SUB SEA MD-TVD VERTICAL DEPTH DEPTH DEPTH DIFF. CORRECT 70hO 6092 6000 9~8 ~6 7187 6192 6100 995 47 7339 6292 6200 1047 52 ~~ ZS02 6392 6300 1110 63 7663 6492 6~00 1171 6] 7821 797/, 8121 8266 8406 8674 8807 8939 9071 9204 9339 9611 9883 ]0019 ]01SS ~0292 ]0431 6592 6500 ].229 58 6692 6600 1282 S3 6792 6700 ]329 47 6892 6800 1374 45 6992 6900 1414 40 7092 7000 1449 35 7192 7100 ]482 33 7292 7200 1515 33 7392 7300 1547 32 7h92 7400 1579 32 7592 7500 1612 33 7692 7600 1647 35 7792 7700 1683 36 7892 7800 1719 36 7992 7900 1755 3~ 8092 8000 ]791 36 8192 8100 1827 36 8292 8200 18~3 36 8392 8300 1900 37 8~92 8~00 ]939 39 RELATIVE COORDINATES FROM WELL-HEAD 2412.81N 2521.17 N 2635.81N 2763.55 N 2890.10 N 168.97 W ]67.55 W 3.64.05 W 157.02 W 1SO.SO W 3012.07 N 3127.19 N 323G.23 N 3339.13 N 3436.56 N ].43.61~ 135.92 ]27. SI ]18.68 ]09. ].0 3527.~9 N 3&14.26 N 3699.73 N 3784.52 N 3869.55 N 97.86 W 84.98 W 70.85 W 54.75 W 38.34 W 3955.69 N 4042.84 N 4130.32 N 4215.]4 N 4297.92 N 20.3~ W 3.88 E 30.21 E 66.72 E 107.88 E 4377.75 N 4455. S7 N 4533.19 N 4&09.35 N 4~84.58 N 152.86 E 201.7~ E 251. O0 E 305. q3 E 365. SO E WEST EILEEN 1/ Z.-21 DATA INTERPOLATED FOR EVEN 1000 FEET OF MEASURED DEPTH S/15/8~ MEAS. TRU VERT SUB SEA DEPTH DEPTH DEPTH ]000 ~000 ~08 2000 2000 1908 3000 2999 2907 hO00 3959 38~7 SO00 4709 4617 ~000 5385 S293 7000 6065 5973 8000 67]0 6618 9000 7~38 73~6 lO000 8]78 8086 RELATIVE COORDINATES FROM WEI..L.-HEAD 0.02 N 0.01 E 3.55 N 6.25 E 10.7~ N 2.17 E 275.83 N 23.42 E 922.9~ N 28.53 W 16S3.79 N 2383.71 N 31J, 6.38 N 3823.7~5 N z~4~4.80 N 117.S0 W 1~9.3S W 13~.43 W h7.30 W 19~.9] E iOOO 1500 ......................... t ...................................... ! ............ 3000 3500 4000 45OO 5O0O 550O 6000 6500 7000 7500 8000 8500 9000 -500 VER-rlCAL SECTION BP EXPLORATION WEST EILEEN # ~-21 SECTION AT N 9.07 E TVD SCALE: ~. inch = lO00 feet DEP SCALE: i inch = lO00 feat DRAWN : 5/15/B9 Harken Identification I~ TVD DER:IT ~J KB 0 0 0 BI TD ~0479 BSF/ 47~3 ",4. / ' ' I 500 ~000 i500 2000 2500 3000 3500 4000 4500 5000 5500 00§ o00g o09E 000~ 00~1: 0o0~ 00~ 0o0~ 00~ O00E OOgE 000£ 00§ 009 00o~ O09T 0002 O0§Z 000£ 009£ 000~ 0009 OOGG 0009 OOG9 ~,a@:; O00'f, = qDu'T ~ flap O8'Og :NOIJ.¥NIqD_q~ L' t7 N q,~ gELIz :_-q~-JflSO-13 ~-Z # N~q-li~ NOIlYt~OqdX~ ................................................................. o o o Z.i:k~o O/LL 01,( UOTq. e:~l J TII,,mP! ,. BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO: HOUSTON DATE: 05/18/89 ARCO T9: 80066 CHEVRON EXXON MOBIL PHILLIPS STATE OF ALASKA GEOSCIENCES 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-21 DIFL 05/07/89 81 10506-11394 Atlas 2"/5" Z-21 LDT/CNL-Raw/Poro 05/07/89 ~1 7830-11336 Atlas Z-21 BHC/AL-GR 05/07/89 91 10506-11366 Atlas 2"/5" STATE ONLY: Magnetic Single Shot Directional Survey Gyroscopic Directional Surve, Received: Date: DIRECTIONAL SURVEYS Date: J~: Date: __~.__~___~ ~ ~~ormation Control ? .... Well Records LR 2-1 ~8~S~{~0~&[~as{}0~s, U01[~a~S:]~0~J' D[etz/S. McCurry BP EXPLORATION HOUSTON ARCO CUIEVRON E~S~ON TEXACO TO: MOBIL PHILLIPS STATE OF AIJkSKA GEOSCIENCES RESERVOIR REFERENCE: ARCHIVES iBP'CASED EOLE ~ LOGS BP Ex01o~at,on (Alaska) 900 East Benson Bouleva~l P.O. Box 196612 Anchomg~ Alaska 9951~6612 (907} 561-5111 Date: 05-18-89 80068 The following material Is being submiT?ed herewith. Please acknowledge receip? by signing a copy of this leJ-~er and returning It to this office: F-35 Perf 05-12-89 91 11524-11946 Sch 5" F-35 CBT 05-12-89 #1 11090-11952 Sch '5" Z-21 CBT 05-10-89 91 10267-11331 Sch 5" Z-21 CET 05-10-89 ~1 10267-11348 Sch 5" Z-21 COMP 05-11-89.__ #1 10790-11250 Scb, 5" Rece [ ved Shirley R. McCurry I NFORMAT ~ ON CONTROL Weii Records kR2-1 BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO ARCO EXXON PHI LL/-RS · -....,,, ~OF ALASKA~ Date: 05/18/89 Tg: 80070 SYSTEM Tape ARCHIVES & Transmittal Only 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-21 OH/MWD/Mag Tape 03/06/89 #- 9325-11830 TP~ 06465 Teleco#TAK691 1600bpi API950-029-21929 Z-21 OH/DIFL/BHC/CNL 05/07/89 #- 7810-11432 TP~ 06466 Atlas Ecc#3812 1600bpi API~ 50-029-21938 Received: Date: Information Control Well Records LR2-1 J. Dietz/S. McCurry TelecoDv: PERIOD OF CONFIDENTIALITY DATE OF COMPLETION, SUSPENSION OR ABANDONMENT 30-DAY FILING DATE RELEASE DATE COMMENTS B.RPC. 02 (05/89) nX, truly .yours, i :' ,'/ /. C. V. Chatterton Chaiman of ~la~ka 0~1 and Gas Conseruae~on BY O~ER OF THE COMMISSION dlf Enclosure cc: 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 April 10, 1989 Alaska Oil & Gas Conservation Commission 3001 Porcupine Dr. Anchorage, Alaska 99501 Attn: Mr. C. V. Chatterton Well Z-21 (3!.-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, 1. O. Stao~ PBU Drilling Engineering Supervisor TOS/KTH CC; Shawn Babbitt Well File STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 2O AAC 25.005 i'a. Type of won Drill [] RedrillOIlb. Type of well. Exploratoryl-I Stratigraphic Testl-i Development Oil[i] Re-Entry [] DeepenOI Service [] ' Development Gas [] Single Zone 1'-! Multiple Zone [] 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exl~loration KBE = 92 feet Prudhoe Bay Field/Prudhoe 3. Address 6. Property Designation Bay Pool P. O. BQ.x 196612_ Anchoring. Alaska gg51g-6612 AD/- 2RPR2 4. Location of well at surf,~ce 7. Unit or property Name 111. Type Bond(see 2o AAC 25.02S) 719' SNL, 3283' WEL, SEC. 19, T11N, R12E Prudhoe Bay Unit At top of productive interval 8. Well number Number 780' SNL 2430' WEL, SEC. 18, ,T11N, R12E Z-21 (31-18-11-12) 2S100302630-277 At total depth 9. Approximate spud date Amount 581' SNL, 2399' WEL, SEC. 18, T11N, R12E April 19, 1989 $200,000.00 12. Distance to nearest 13, Distance to nearest well 4. Number of acres in property15. Proposed depth(MOan~TVO) property line ADL 28245/2550 feet CHEVTR/89.4 feet 2560 11358' MD/9162' TVDfeet 16. To be completed for deviated wells 17. Anticipated pressure (see 20 AAC 25.o35 (e)(2)) Kickoff depth 2800 feet Maximum hole an~jle 45,4g Maximum surface 3330 pelg At total depth (TVD) ~800/4._~g0 psl~ 18. Casing program Specifications Setting Depth s~ze Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 20" Cond. 80' Surface 110' 110' 17-1/2" 13-3/8" 68# L-80 Butt 2622' Surface 2652' 2652' 3684 cu ft Permafrost 12-1/4" 9-5/8" 47# NTaO.S~ NSCC 10489' Surface 10519' 8574' 2268 cu ft Class G 8-1/2" 7" 26# L-80 IJ4S 1089' 10269' 8398' 11358' 9162' 310 cu ft Class G , , 'i 9. 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 Surface Intermediate : Production - .. Liner Perforation depth: measured true vertical ~0. Attachments Filing fee [] Property plat [] BOP Sketch [] Diverter Sketch [] Drilling program[] iDrillincj fluid program [] Time vs depth plot [] Refraction analysis [] Seabed report[] 20 AAC 25.050 requirements l-I ,2..~1(~..~ hereby certify that the foregoing is true and correct to the best of my knowledge ~igned ~='~ Title PBU Drilling Engineering Supervisor Date ;p,"_ ~,_ ~,,? '" / Commission Use Only Permit Number IAPI number IApproval date ISee cover letter ~?'-¢,2-. 15°'(::3~- ~-/?--~ ¢I '",";/~' ~/89 Ifor other requirements Conditibr~s of approval Samples req.uired [] Yes ,~No Mud log required. [] Yes ~l~'No Hydrogen sulfide measures [] Yes/~_No Directional, survey requ~re~ ~;~[Yes [] No Required workingj3r, e~sure~for BC~ ~ 2M; 1-13M; ,~[5M; !-!10M; I-!15M; Other: ~~~. Approved by Commissioner ~ne commission Ddt Form 10-401 R~ 12-1-85 " ;ate AFE No. 120922 PROPOSED DRILLING AND COMPLETION PROGRAM WELL Z-21 [31-18-11-121 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 with a sliding sleeve. Set packer 50' above top of liner. A subsurface safety valve with dual control lines will be placed 50' 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 6 GLM's. Tailpipe Size: 3-1/2" Tailpipe SDB: 3-31-89 PROPOSED DOWNHOLE DIAGRAM WELLZ-21 [31-18-11-12] 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" 9.245 L-80 EUE 8 Rd A/B MOD. Butt IPC Tubing with 6 GLM's 9-5/8" Packer 10219 7" Tieback Assembly 10269 9-5/8" Shoe 10519 12-1/4" Open Hole 10529 7" 2655 L-80 IJ4S Liner 7" PBTD " 11318 7" Liner Shoe 11358 8-1/2" Open Hole 11358 SDB' 3-31-89 B.O.P. STACK CONFIGURATION 1~-5/8 IN. TRIPLE RAH STACK 5;000 PSi WP DRILLING ANNULAR PREVENTER . PIPE I RAMS 2 IN. ICILL LIHE J I ! I I BL I ND RAMS I DRILLING SPOOL I PIPE RAMS i, j. 4 IN. CHOICE LINE GATE GATE ! / FLOWLINE DRILLING RISER 2O" 2OO0 PSI WP A~TNUI~Jt PRE~NTOR DIVERTER SYSTk-M DETAIL DRILL. DEPT. April 1982 10 3/4" Hydra,~ c closes. 10" DIV'ERTER [OUND L~ DRILLING SPOOL 20" CONDUCTOR PIPE NOTE: DIVERTER~INE HAS TWO DIRECTION DISCHARGE ~CAPABILITY AFTER LEAVING RIG SUB-BASES. SURFACE HOLE DIVERTER SYSTEM 10 3/4" manual ~otterfly valves ~ 10 3/4" 55~ Buttress 10.3/4" Hydraulic operated Butterfly valve ~ 20" Diverter Spcol w/10 3/4" Two lines venting 90° apart in direction~ that insure safe down wind venting, and extending to a point at least 100' (feet~ from any potential source of ignition. NOTES 1. Ail pipe connections 150# ANSI Flanges or welded connections and secured to prevent movement. 2. Manual 10-3/4" butterfly valves mechanically connected to insure that one valve is fail- safe open at all times. 3. All turns are 90° (degrees) and targeted. NORTH WELL Ne Z- 21 SURFACE LOCATION ILAT. · 7'0° 17' 54. 250' LONG, · 149° !1" 42. 376" i Y · 5 , 959,360.12 I X · 599,:589 O0 I ' A.S.P. ZO NE 4 ?,9' 1669' FROM N. LINE SECT. FROM 11'. LINE SECT. T. 19' T. II T. II T. I0 0 t .CALE : I i ( MILES ,WELL PAD 'Z' _-,,,,.'~_........._,'q.e,"l, ' CERTIFICATE OF SURVEYOR: · _~"o:' ~ ..'Y t. LIELL N° Z- 21 AS-BUILT , .E.E.. CE.T,,'Y T.AT , A,. ,'.O,'ERL', ~" .:'49:I.H. ~ "..*//. LO=ATED ,N LAN:) SURVEYING Il THE STATE OF AL.~SKA :.~ ~.?;: ~, B~**-~o,*o *lomulich ,,'~ SURVEYED FOR : AND THAT THIS PLAT REPRESENTS A a ,.r % L.~. ~/y. o....~ / ~"TANDIItiRD ALASKA PRODUCTIOrq CO. lily SUC~R*V'iSIOH, AND THAT ALL DIMENSIONS "~-/' ,R~'PARED .~ I AND OTHER DETAILS &R.~E CORRECT. KUUKPIK - ~ .... ' / '-- I {,~,%,j~qk,,,~b,~ ' : DATE: NOV. {0,86 ',~,***~**,~-~ ,'~-~- .... ~, NOv. zo.,~ TECHNICAL SERV. INC. : * DRAWN BY IT S~R~/EYOR -- DATE: ,tHr,v ..... m NW CORN. OF SECT. 19 · · · · · · 1669' SUMP INORTH LINE iF' SECTION 19 o · · · · · I' ' U SUMP lOl?# SHEET 2 OF 2 666666666666666666666666 Digital Eooipment Co~poration - VAX/VMS Version V4. 7 666666666666666666666666 66666666666666666666666666666666666~66666666666b6666666666666666666666666666666~666666666666666666666666 _$45DUAI24: [DRANO28]Z21_CLOSAP_SHORT7. LIS; 1 28-MAR-1989' 15:35 --- Closest Appeoach Anaigsis --- Date~ 28-MAR-89 Time: 15:35'04 Seaech Radius= 200 7 DEGREE LEAD LINE Foe peoposed well; Z-21 [3i-i8-1i-12] Location = W-E S-N TVD(SBS) B°~T°Ptom 5~38~L O0 5c75~7360. O0 -~. O0 5~51~. ~4 5964738. 57 8~65~ O0 Notel All depths in ~eet Belo~ Kellg Bushin9 (BKB) Closest App~omch WELL IDENT /PROPOSED\ /NEARBY\ CLOSEST TVD DEPART TVD DEPART DISTANCE A0~9-~051100 CHEVTR 7491.8 3790.4 7468.4 3087.6 A0~-~184400 Z-14 100.0 0.0 i00.0 0.4 A0~9-~184~00 Z-15 1100.2 0~0 iI00.0 ~. 8 343. 1 A029-2I~0200 Z-25 900.6 0.0 900.0 5, 6 138. 1 Vertical Intersection /PROPOSED\ /NEARBY\ TVD DEPART TVD SUMMARY The ~ell which comes closest to the p~oposed well is: A02~-2051100 CHEVTR Closest approach distance = KICK OFF Poe this Tun = 8~.4 ~eet 2800.0 Peet DEPART Page i VERTICAL DISTANCE FFFFFFFFFF FFFFFFFFF~ ~FFFFF==-F' _$45DUA124: [DRANO28]Z21_CLOSAP_SHORT. LIS; I 28-MAR-198:~ 15:34 --- Closest Approach Analgsis --- Date: 28-MAR-8~ Time: 15:33:59 Sea,ch Radius= 200 COURSE LINE Foe p?oposed well' Z-21 [31-18-11-12] Location = W-E S-N TVD(SBS) Top 5~389.00 5~5~360.00 -~2.00 Bottom 600166.80 5964683.46 8965.00 Note: Ali depths in Ceet Below Kellg Bushing Closest Apple@ch WELL IDENT /PROPOSED\ /NEARBY\ TVD DEPART TVD DEPART A029-2051100 CHEVTR 7471.8 3770.1 7460.6 3081.0 A029-2184400 Z-14 I00.0 0.0 100.0 0.4 A029-2184900 Z-15 1100.2 0.0 1100.0 ~ 8 A02~-2185900 Z-20 1500.6 0.0 1500.0 5.7 A029-2190200 Z-25 900.6 0.0 ~00.0 5. 6 CLOSEST DISTANCE 551. 2 322.9 343.1 476.1 138.1 Ve~ticai Inte~section /PROPOSED\ /NEARBY\ TVD DEPART TVD SUMMARY The well which comes closest to the p~oposed well is' A02~--21~0200 Z-25 Closest approach distance = KICK OFF ¢o~ this ~un = 138. i ~eet 2800.0 feet DEPART Page 1 VERTICAL DISTANC;E MUD WEIGHT CALCULATIONS WI~LL Z-21 (31-18-11-12~ Mud Wt. (8-1/2" Hole): P Sag River: P Sadlerochit: P Top Sadlerochit: OB Sag River: OB Top Sadlerochit: Current GOC: 9-5/8" Casing Pt. Top Sag River Top Sadlerochit 9.5 ppg. 4029 psi. 4060 psi. at 8800' TVDSS 4044 psi. 196 psi. 190 psi. 8868' TVDBKB 8574' TVDBKB 8581' TVDBKB 8749' TVDBKB Cement Colculations 13-3/8" CASING Measured Depth: Basis: Total Cement Vol: 9-5/8"CASING Measured Depth: Basis: Total Cement Vol: Lead Slurry Vol: Tail Slurry Vol: 7" LINER Measured Depth: Basis: Total Cement Vol: 2652' 2 X Annular volume 3684 (cu ft) 3961 Sx Permafrost @ 0.93 Cu ft/Sk 10519' 90% Annular Volume to 13-3/8" + 50 cu ft 2268 (cuft) 1348 (cuft) 713 Sx G+8% @ 1.89 Cu ft/Sk 920 (cuft) 800 Sx Neat G @ 1.15 Cu ft/Sk 11358' 1.5 X Annular volume to 9-5/8" shoe + 150 cu fi 310 (cuft) 263 Sx Neat G @ 1.18 Cu ft/Sk SDB: 3-31-89 in~x,,~c, PLJ H P*~ ,, :iL I' SOCT~O~J SuC'T~O~ U ~_.L_t. IMclD PL,Ir~P$ ro T~,~ i - ~ 6-~" Con~ ~h~le D~s~der 1- Be. taco 416H w/16 cones & (l) Demco 48H w/16 cones (Desilter) 1 - Drilco Atmospheric Mud Degasser D£~¢o I,Z 3 50 ~ 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 Ir~U~ I 1- Drilling fluid flow s.~,e~s~ or with readout at drill%~.',s console CHECK LIST FOR NEW WELL PERMITS ITEM APPROVE DATE (2 thru 8) (3) admin ~p~'_ 9. · (9 thru 10. (10 and 13) 12. 13. (4) Cas~ (14 thru 22) (23 thru 28) ( 6 ) 0 TH E R .~fC q/~//~ (29 thru 31) (6) Add: GeologM: DWJ ~ Engi~neerin~: LcS BEW rev: 01/30/89 6.011 . 3. 4. 5 6 7 8 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. For 29. 30. 31. 32. Company ~ YES Is the permit fee attached .................................... , ..... Is well to be located in a defined pool ............................. Is we~l] located proper distance from property line .................. Is We~,~ located proper distance from other wells ................ '.... is suz~iCient undedicated acreage available in this pool ............ Is well to be deviated and is wellbore plat included ................ Is operator the only affected party ................................. Can permit be approved before fifteen-day wait ...................... Does operator have a bond in force .................................. Is a conservation order needed ...................................... Is administrative approval needed ................................... Is the lease number appropriate ..................................... -~- Does the well have a unique name and number ......................... Is conductor string provided ........................................ Will surface casing protect all zones reasonably expected to serve as an underground source of drinking water ..................... Is enough cement used to circulate on conductor and surface ......... Will cement tie in surface and intermediate or production strings ... Will cement cover all known productive horizons ..................... Will all casing give adequate safety in collapse, tension and burst.. Is this well to be kicked off from an existing wellbore ............. Is old wellbore abandonment procedure included on 10-403 ............ Is adequate wellbore separation proposed ............................ Is a diverter system required ....................................... Is the drilling fluid program schematic and list of equipment adequate,~ Are necessary diagrams and descriptions of diverter and BOPE attached. Does BOPE have sufficient pressure rating - Test to~-'~ psig .. Does the choke manifold comply w/API RP-53 (May 84) .................. Is the presence of H2S gas probable ................................. exploratory and Stratigraphic wells: Are data presented on potential overpressure zones? ................. Are seismic analysis data presented on shallow gas zones ............ If an offshore loc., are survey results of seabed conditions presented-- Additional requirements ............................................. Additional Remarks: INITIAL GEO. UNIT ON/OFF POOL CLASS STATUS AREA NO. SHORE Lease & Well No. /~9~ 2~2~.2_ NO REMARKS o ~z Well History File APPENDIX Information of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history file. To improve the readability of the Well History file and to simplify finding information, information, of this nature is accumulated at the end of the file under APPENDIX: No special'effort has been made to chronologically organize this category of information. PROGRAM: LISCAN REVISION: 5.1 PART NUMBER: WS790-PE32 Stemt of eXecUtion:: Mon 14 MAY 89 7:43a **** REEL HEADER **** LIS 89107105 ATLAS 01 'LIS CUSTOMER LIBRARY TAPE' **** TAPE H:ADER **** LIS 3812 01 "'OPEN HOLE WITH OI¢L, BHC, CN POR. RAW DATA ~ CASED HOLE CN.' FILE # 1 MAIN .001 **** FILE H=ADER~ **~* 1024 CN NN FN COUN STAT : B° =XPLORATION : PRUDMOE BAY : PRUDHOE BAY : NORTH SLOPE : ALASKA Z-2l . FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME TAPE DEPTH UNiT : FT 15 CURVES : NAME 1 SD 2 GR CODE S~MPLE# UNIT 68 1 MV 68 1 ~I BYTES 4 5 RFOC 68 1 OHMM 4 6 R!LM 68 1 OHMM 4 7 R!LD 68 I OHMM 4 8 CSSN 68 1 CTS 4 ~ CLSN 68 1 CTS 4. 0 CAL 68 I iN 4 ! CHT 68 1 LB 4 2 AC 68 I MSFT ~ 3 CN 68 I PCT 4 4 CNC 68 1 PCT 4 5 CILD 68 I MMHO ~ , DATA RECORD DEPTH RFOC CAL CILD 11432.000 0,2000000 6.000000 3.000000 11382,000 5.920611 -7.921870 305,2466 11332.000 3.710626 -7.865022 503,0833 11232.000. 4.00729! -8.479671 651.4985 11232.000 8.746500 -8.784.588 216.2547 11 182.000 5.792721 8.831253 291.7688 11132.000 9,029354 -8,800003 134,5554 11082.000 16,67624 -8.737560 62.82802 11032.000 14.66790 (TYPE# O) SP RiLM CHT -80.00000 0,2000000 300.0000 -11.98204 3.580861 -11748,83 -32,25334 2.180816 -11748.83 -65.45802 1,685650 -11748,83 -36.52945 4.973112 -11748.83 -49.67281 3.306346 -11748.83 -54,63330 5.$24.732 -11748.83 -42.03082 12.96350 -11748.83 -12,06436 9.376637 966 BYTES * GR RTLO,, AC 0.0000000 333,3333 50.00000 0.0000000 3,276040 75.25360 31.25121 1.987742 76.62283 21.77760 I ,534923 85.63715 26.00739 4.624176 72,29279 21,84998 3.427371 86.61813 20.74451 7,431884 83.67197 23.07022 15,91647 81,4224~ 43,97667 10.11~32 TTEN CSSN CN 4500.000 50.00000 O.O000OO0 5930.215 50.00000 0,0000000 6014.188 305.5935 18.18242 6260.055 284.2791 20.26801 6007.352 373.2075 13.06519 6049.355 292.4487 19.79327 6054.484 303.1357 19.22705 6063.039 334.6719 14.98900 6087.871 322.1152 SPD CLSN CNC O.O0000OO 0.0000000 O.O000OO0 18.99811 O.O000COO 0.0000000 18.99811 121 .2~63 22.18242 18.99'Jll 105.4:)02 24.26801 18.99311 178.8653 17.06519 18.99811 110.1517 23.79327 18.99511 116.2619 23. 22705 9.999001 148.7611 18.93900 31. 99683 143.8936 109~2.000 18'.64777 -8.800003 47.66042 1~932.000 17.85507 -8.815628 105.1795 108~2.000 22.83295 -8.800003 36.62134 10832.000 24.49449 -$.800003 37.86140 1078.2.000 33.73322 -8.768753 39.12144 10732.000 38.24655 -8.778759 55.92018, 10682,000 105.2351 -8,800173 17,~24~5 10 632.000 16.q5613 8.799376 73.98335 10582,000 2~7,3444 -8,788t22 12,~6647 10532.000 7.261361 -8.800003 142.2718 10482.000 0,2000000 6,000000 3,000000 10432,000 0.2000000 6,000000 3.000000 -2.Q. 58592 14.27708 -11748.83 1.219695 7.648499 -11748.83 -67.27975 18.67465 -11748.83 -65.61694 17.55766 -11748.83 -56.90672 P_4.5~615 -11748.83 0.1212192 12.89112 -11748.83 18.05754 54,37309 -11745,83 -0.2586401 13.30862 -11748.83 -47,31578 47,00117 -11748.,83 -40.36807 6.98920Z -11748.83 -92,'41487 10030,00 300,0000 -80,00000 0,2000000 300,0000 TOTAL DAT& RECORDS : 137 32.23080 20.98177 83.19679 62.82436 9.507553 68.86484 34.65749 27.3~647 87.00392 35.84238 26.41211 78.85115 60.16432 25.56142 88,09456 118,7959 17,88263 63,80~49 382,6489 55.78908 60.56010 97.20676 13.51655 83.16846 79.6.1877 81.5~304 55.01057 125,~115 7.028800 81,26228 70,80779 333.3333 79.22226 70.13881 333.3333 50.00000 5977.922 300.5918 18.93370 5991.629 336.6257 16.28363 5998.078 320.0427 15.19733 5939.465 316.9541 15.45306 5963.023 306.3081 16.10063 5914.617 360.597~ 11.65976 6084.566 339.3730 14.01419 5882.988 249.1307 24.82950 5705.695 502.1738 4.55B000 6120.152 259.9282 18.86600 4500,000 143,~208 49,43382 4500,000 140,1742 59,62802 32.~B750 116.3881 22.93370 32.23260 142.6,]64 20.28363 22.10699 141 .1522 19.19733 20.99791 133.4687 19.45300 12.10800 130..5921 20.10063 13.99560 183.3525 15.65976 13.99860 156.6003 18.01419 13.99860 81.02441 28.~2950 13.99,:360 374. ,0785 8.557999 14.10783 100.8659 22.86600 0. 0003000 30,48790 53,43382 0.0000030 27.16760 63.~2802 FILE # REPT ,002 2 **** FiLE HEADER 1024 FORMAT RECORD (TYPE# 64) ONE DEPTH PER :RAME DEPTH UNIT : FT 15 CURVES : NAME COD 1 SP 68 2 GR 68 3 TTEN 68 4 SPD 68 5 RFOC 68 6 RILM 6~ 7 RILD 68 8 CSSN 68 9 CLSN 88 0 CAL 68 I CHT 68 2 ac 68 3 CN 68 4 CNC 68 5 CILD 68 E SAMPLE# UN:IT I MV: 1 I LB 1 F/MM I OHMM 1 OHMM 1 OHMM 1 CTS 1 CTS 1 IN 1 LB I MSFT I PCT I PCT 1 MMHO 5Y 4 4 4 4 4 4 4 4 4 4 4 4 4 4 TES * D 114 -9 -9 -9 113 5 -1 3 113 3 5 112 3 ~TA RECORD EPTH :OC AL ILO 32.000 99.2500 99.2500 99.2500 82.000 .738311 .160645 01,6072 32.000 .826915 7224002 06.5413 82.000 .927486 (TYPE# O) SP RILM CHT -999,2500 -999,2500 -999,2500 -2t .28615 3.553637 -117~8.83 -32.94246 2.149655 -11748.83 -50.37535 I .690258 966 BYTES * GR RILO AC -999,2500 -999,2500 -999,2500 0.0000000 3.315571 75.09799 35.02744 1.974173 76.43001 24.87891 1.530433 TTEN CSSN CN -999.2500 -099,2500 -999.2500 5973.133 50.00000 0.0000000 5959.988. 314.3110 19.30412 6173.422 281.0383 SPD CLSN CNC -999,2500 -999.2500 -999.2500 21,997:]0 0.0000000 O.O0000OO 23.99700 120.24c)0 23.30412 23.99760 105.8o26 11232.000 $ .'670967 -t .518461 217.6t8,5 1 t I 82. 000 5.971610 -1.856951 2~6.3113 11132.000 9.091505 -2.4O080? 133.6988 11052.000 16.31525 -2.073313 61.55310 11 032.000 14.78245 2.946407 !05.3164 1 0982. 18.~2280 -3.453013 47.74413 10 932.000 15.~8567 3.770101 105.2566 10882.000 21.67436 -4.303026 38.376~3 10832.000 23.Q1502 -4.27004~ 38.31627 10782.000 34.00066 -4.~58919 41.o7566 10732.000 41.34450 -5.302645 5?.63306 10682.000 97.81673 -6.054731 17.Q0465 10632.0C0 i8.23206 -6.366:325 -~1.61136 4.954424 -11748.83 -52.65550 3.31 8577 -1174.',8.83 -61.81z~t6 5..872025 -11748.83 -52.92264 12.72834 -t17~8.83 -36.37790 9.272982 -11748.83 -49.08936 14.23971 -11748.~3 1.$38540 S.40596$ -11748.83 -37.25366 18.0780Q -11748.83 -48.14366 17.71806 -11748.83 -41.43321 24.37622 -11748.83 -1 5.11 045 t2.56615 -117~8.83 -9 143~22 I ~ 50.72995 -11748.83 -0.3997451 13.50726 -!1748.~3 27.03102 4.595197 72.34045 21.7~03~ 3.492702 86.76483 22.95158 7.479497 $3.4331~ 20.~7685 16.2z, 612 81.50505 44.59042 9.495195 7~.14912 30.825~7 20.9.~498 83.35381 60.56653 9.500593 67.33052 41.68553 26.05739 87.09570 38.1157~ 26.09857 7~.56615 65.1.860~ 23.82332 90.07055 115.1533 17.351:1 5 ~2.67374 373.9104 55.85139 62.22383 98.46150 13.84093 84.68608 5989.~14 364.1201 11.65732 5957.387 291.0085 19.74934 6049.172 302.0356 19.4026~ 6208.906 337.5479 16.27223 6062.875 318.6377 1~.47162 5953.988 299.5173 18.9183,8 5870.945 356.6226 17.53735 5971.156 311.9849 16.33650 5883.453 31 5. 7861 16.85732 5965.984 304.5364 14.94347 5918.441 350.3105 11.4587z. 6081.051 337.3774 14.9889~ 5~47.902 255.9074 24.47847 23.99760 185.1635 15.65732 23.99760 109.7619 23.74934 23.9¢760 115.1876 23.40262 23.99760 143.1357 20.27223 24.99750 144.4473 18.47162 24.¢~7~0 116.0300 22.91335 20.20320 144.6734 21.53735 24.99750 131.9920 20.33650 16.76250 131.1599 20.85732 19.99800 135.5982 18.94347 15.99840 179.6936 15.45874 22.99770 149.~640 18.98894 22.99770 84.01900 28.47847 1~5 3 1 105 7 -6 1 104 O. 6 1'34 O. 6 3 82. 000 -5 . 1 88879 84.74631 5684. 254 1 5 . 99,~40 41 . 6892 46.68930 80. 14795 51 9. 581 5 384. 9954 . 584412 -11748.83 55.31107 4. 66941 9 8,. 6,6941 8 2.47692 32.000 -53.13162 I 29. 7498 5806. 723 1 5. 99840 . 241042 6.628305 7.0711 64 271.7878 97.95 .~79 . 257650 -11 748.83 79. 56093 2t . 21 774 25 . 21 774 41.4t94 82.000 -116.8477 69.88676 4500.000 0.0000000 2000000 0.2000000 333.3333 143.3011 28.04590 .000000 300.0000 72.91347 58.33063 62.33063 .000000 32.000 -80.00000 67.0§813 4500.000 0.0000000 2000000 O.ZO00000 333.3333 140.6555 27.93561 .000000 300.0000 50.00000 56.46942 60.46'942 .000000 TOTAL DATA RECORDS STARTING TAPE DEPTH FILE TRAILER **** : 137 = 11432.00 ENDING TAPE DEPT.H 10408.00 FILE CHCN · ,,, 3 **** .003 PILE HEADER 1024 FORMAT RECORD (TYPE~ . 64) ONE DEPTH PER FRAME TAP:~ O=PTH:~ UNiT : FT 15 CURVES : NAME CODE I SP 68 2 GR 68 3 TTEN 68 4 SDD 68 5 RFOC 68 6 DILM ,58 7 RILD 68 8 CSSN 68 9 CLSN 68 10 CAL 68 1! C.HT 68 12 AC 68 13 CN 68 14 CNC 68 15 ,~"ILO 68 SAMPLE# 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 UNIT MV API LB F/MM OHMM O.HMM O.H MM CTS CTS IN LB ~SFT PCT PCT MM.HO BYTES 4 4 4 4 4 4 4 4 4 4 4 4 4 4 DEPTH ' R OC C~L CILD 10586.000 0.~000000 6.000000 0.0000000 10536.000 2.056887 6.983171 494.0¢90 10486.000 2.254072 27.79733 536.9237 10436.000 2.247448 27.~3536 537.636? 10356.000 2.257154 33.26288 539.4099 10336.000 2.247774 13.19352 538.4219 10286.000 2.240347 4! .43948 536.6521 10236.000 2.241750 11.71479 539.8281 10186.000 2.260153 13.41366 539.25'~0 10136.000 Z .74~59 25.69,%47 540.7441 10086.000 2.247975 20.317~9 538.6577 10036.000 2.256596 37.86610 SP RILM CHT -80.00000 0.2000000 300.0000 -33.48940 2.007504 -10901 .20 -86.48717 1.867692 -10915.54 -100.0539 1.862702 -10869.02 -85.99841 1.836443 -10919.65 -93.50212 1.864846 -10874.64 -103.6350 1.872260 -10839.52 -107.3715 1.858416 -10853.24 -119.5733 1.852713 -10882.03 -163.5790 1.858412 -10857.56 -174.7732 I .856130 -10869.84 -194.7996 !.858273 -10877.52 GR RILD 0.0000000 0.2000000 50.00000 O.O00OO00 2.020206 193.5672 77.60461 1.862445 249.9750 69.08202 t.859992 701.1655 56.71536 I .353878 660.1411 68.66121 1.857280 539.6152 65.97528 1.863404 767.6904 65.48222 I .852442 786.1411 69.78549 1.854397 714.5271 65.85741 1.849303 706.3242 62.18242 t. 8c64665 556.3628 '=:0 07'994 I ·851859 264.4617 TTEN CSSN CN 4500.003 50.00000 0.0000000 5968.355 50.00000 O.O000000 5684.203 137.8613 62.69666 5628.996 141.2731 60.75783 5633.547 145.0697 66.49524 5597.~87 138.9816 60.14748 5563.027 138.1080 70.84079 5555.563 135.5816 56.87Z41 5500.563 134.4509 72.44290 5456.746 138.215,~ 53.95681 ~488 4~8 156.1552 44.81921 5443.551 161.1858 39.33812 SPD CLSN CNC C.O000000 O.O00000O O.O00000O 31.99680 O.O000OOO 0.0000000 34.99651 26.62204 66.6966b 34.'99651 27.29112 ,54.75783 35.99640 26.89474 70.49524 34.99651 27.12398, 64.14745 35.76060 24.95898 74.$4079 35.85719 26,85291 60.87241 35.88719 24.t3332 76.44290 34.99651 28.06576 57.96681 35.70060 35.07341 48.31923 34.99651 38.836'~0 43.33812 '9986,000 2.247153 25,34729 539.5605 9936,000 2,260201 48,56999 538.5178 9886.000 2,255709 59,31737 542,4873 9836,000 2,250379 1'7,02995 539,1719 9756.000 2,247387 26,32495 539,3567 9736.000 2,253690 26,66425 538,7749 9656,000 2.241088 -10.47256 540.4858 9636.000 2,270005 25,77872 539,4395 9586,000 2,243415 56,37830 539,2119 9536,000 2.260750 71,50285 540,3604 9486.000 2.263083 -8,944256 539,5393 9436,000 2.266953 3~.87527 9386.000 2.270155 68,38584 538,4021 -182,5703 I .859596 -10909,68 -171,9799 I ,850919 -10872.85 -165,6452 I ,849193 -10879,35 -160,9616 1,862287 -10865,86 -160,2843 1,863840 -10866,50 -163,680_~ I ,$64040 -10874,23 -182,1153 I ,854672 -1 0899,67 -193,6935 1 ,874277 -10833,10 -160,9229 1,860106 -10914,52 -149,7943 1,869326 -10921 ,0~ -127.9077 1,874476 -10895,05 -104.$801 1. 848060 -10859.55 -107,1018 1,860807 -10864,97 57,75090 1,853360 527,9946 47,46599 1,856949 720,8130 54,65474 I ,843361 223,4485 55.09297 1.854696 817.6060 ~7,67351 1.854060 699,4956 72,47569 1,856063 824,3083 72,47406 1.850187 625,1973 67.69737 1,85377.6 502,1843 65,14075 1,854558 859,8057 62,93925 1,850616 948,3367 59.53914 I ,$53433 134,5845 48,06671 1.852282 924,8950 50,70747 1,857347 708,994t 5394.773 1 51,31 34 38.61241 5384,805 168,2961 39,77502 5378,035 152,0066 51.02495 5311,367 158,2119 43,12506 530~+,031 154,6469 45,43597 5240,555 141,2640 52,57819 5198,914 138,7130 48,80428 5171.992 140,5~50 57,99831 5114,531 141,4561 62,26019 5006.125 134,3218 70,14502 4997.516 144,4897 47,58328 4960.230 149,9064 44.03137 4928.953 146,2341 48.8.~21.~ 34.99651 36,,$5832 42.61241 34.99651 40,~1878 43.77502 41.99580 31,79630 55,02495 41.99550 36.45317 47,12505 41.99580 34,4~545 49.43597 41,99580 29,09225 56,57819 42.99571 29.63437 52.80429 42.99571 27.67058 61.99831 ~2.99571 27,27156 66,26021 42.c~9571 24,47940 74.14502 42.99571 31.45068 51,58328 ~2.99571 33,$1140 48,03137 42,99571 31 52.35219 2,230-538 5.335714 541,0~66 9286,000 2,23397~ 27,44593 540.67~ 9236,000 2,266737 35,00026 540.7041 9156,000 2,262229 41,95567 540.5396 9136,000 2,254239 75,07593 539.9238 9086,000 2,268182 -2,112350 542,1743 9036,000 Z,257026 55,97713 541.0t59 89~6,000 2,265663 42,63472 542.3188 8936,000 2,256254 36,20859 539,7439 8886,000 2,264978 32.79605 540,1763 $836.000 2,273~62 3~ :~3~6 541,5427 $78~,000 2.265638 36,34076 540,8518 8736.000 2.263698 34.10234 538.7065 1.849402 -10919,05 -214,3189 t ,867912 -10929,64 -233,0425 1,861268 -10819,$6 -225,1865 1,856844 -10939,44 -238.7039 1.863700 -10896.04 -194,5791 I ,862455 -109~0,1 0 -177,8011 1, $597~38 -10860,94 -174.4403 I .857170 -1(]856.79 -180,3471 1.863424 -10912,22 -199,5547 I ,859371 -10866,17 -173,5473 I .858172 -1~94,62 -156,6093 I ,$59230 -10916,02 -155,7743 t,867013 -10873,41 1.$48338 ~25.4536 46,41579 I ,849529 825,2231 43.10487 1.8494~1 809.6885 46,56395 1,850003 893,4033 42,69965 1,852113 55,11380 59,31334 1,844425 865,5667 62.09821 1,848374 921,2034 58,97713 1,843934 647,4966 60,35066 I ,852731 690,5999 63,75584 1,$512~8 479,0300 66.39410 1.846577 643,6357 59,76263 1,84~935 866,9314 59,99118 1,856298 732,1743 154.3612 40.29753 4909,168 157,830~ 33,54936 4943,191 161.7222 36.39771 z~920,094 156,5946 36,96135 487.~,836 149,6425 43,50835 4867,059 131.5686 53.11378 4819.645 138,3562 64,06042 4759,602 133.9267 56,95949 4697,625 146.1224 55,82069 4729.652 137,6058 46.84593 4676.914 139.1465 46,13611 4672,215 139,0481 50,6891 5 4660.734 133,6078 54.3~665 37.29039 44.2~753 42.99571 42,03735 37.54936 42,9~571 40.~3898 40.39771 c2.g9571 39.~¢$09 40.96136 42.99571 34.41785 47.50835 42.99571 27.00279 57.1137~ 42.99571 26.11737 68.060~2 44.10481 26.50526 60.9~94~ 44,10451 29.34125 59.82069 43.9~561 30.01018 50.84593 44.10481 30.60135 50.13611 43.99561 29.16116 54.68915 43.99561 27.22856 58.34666 21.11174 53,6.7522 $636.000 2.263614 39.66222 539.8191 8586.000 2.268001 29.4086:6 539.5559 8536.000 2.263457 49.87941 538.8450 8436.000 2.269931 33.19168 538.1910 8436.000 2.261137 31.5495! 2.265015 48.42567 539.1135 8336.000 2.267294 13.41830 538.1111 8286.000 2.271570 1.500828 540.7676 8236.000 2.261024 -10.98564 536.1975 8t86.000 2.265114 40.06049 539.2131 8136.000 2.266500 22.84119 539.6375 8086.000 2.301306 73.62015 539.366? -10917.02 -155.3701 I .865376 -10875.79 -144.9~55 1.866775 -10847.64 -144.6630 1.866808 -10906.30 -132.5004 t.866809 -10887.54 -139.6602 1 · 86 ,;~ -10875.18 -167.2682 1.865355 -10799.52 -194.8235 1.867282 -10914.32 -157.3542 1 .870793 -10893.30 -191 .1278 t .876131 -10913.50 -149.0306 1.863626 -10912.04 -154.6785 1.870746 -10859.87 -170.0851 1.880502 -10799.47 675.0664 54.33740 1.852472 848.9448 52.36333 I .853376 749.6841 64.83484 1.355822 465.3606 58.71408 I .858073 870.1592 50.00554 1.847259 627.4600 53.83368 1.854897 722.3340 58.52628 1.858353 983.5234 62.44981 t.849223 174.2886 63.37328 1.864985 690.6~14 56.61816 I .854554 836.8159 50.30954 1.853096 846.225,~ 52.80151 1.854026 562.1194 51.71077 4579.395 141.2695 49.27454 4560.953 136.8890 51.54384 4521.152 136.8427 52.4162~ 4448.'934 133.2043 59.11116 4399.32~ 139.2~32 54.27356 4396.453 138.9631 50.86356 4341.527 140.2072 44.70793 4296.070 136.4157 55.4143~ 4287.344 134.5868 54.10~54 4301.004 133.0014 50.65501 4245.934 143.5938 45.74380 4201.426 135.0400 49.34067 55.71077 44.88631 30.04942 53.27455 43.99561 2~.42216 55.54584 43.~9561 2B.34238 56.41620 43.~9561 25.94171 63.11116 43.~9561 28.51183 58.27356 43.90561 29.08566 54.86856 43.99561 31.42572 48.70793 44.99550 27.42744 5c~. 41434 44.99550 27.42712 58.10454 44 095~0 28.2~736 54.6¢~01 44.99550 31.77876 49.74380 44.99550 28.98264 53.34067 8036.000 -203,1 285 34,75674 z, 1 92. 262 44. 99550 538.1177 7986.000 ~.269744 87,145~8 537.6370 -197.09t6 1 .877746 -10784.84 47.95215 I .$59991 969.5732 4116.051 1 46.31 50 51 .53284 30.63326 55.53254 7936.000 -163.5013 85.45708 4106.797 44.99550 2.279231 1.873498 1.862537 128.3679 25.22710 44.0999~ -10526.32 8~6.6121 5~.00993 62.00993 536.902! 7886.0~0 -178.76~$ 83.29626 4051.7~6 ~4.99550 2.232925 t.866697 1.854t9~ 135.8320 26.06493 -8.877958 -10517.$1 915.9739 62.05225 66.052~5 539.3186 7836.000 -80.00000 106.9387 4500.000 O.OCO0000 0.2000000 0.2000000 0.2000000 137.6073 27.16869 6.000000 300.0000 50.00000 60.32980 64.32980 0.0000000 TOTAL DAT~ RECORDS STARTING TAPE DEPTH ~ILE TRAILER **** : 371 = 10586.00 ENOING TAPE DEPTH 7810.00 **** TAPE TR/IILER .LIS 89/07/05 3812 01 TOTAL RECORDS IN THIS LOGICAL TAPE : 658 **** REEL LIS 89/07/05 &TLAS 01 TRAILER **** TOTAL RECORDS IN THIS LOGICAL REEL : TOTAL R:CORDS iN THIS PHYSICAL REEL: End of execUtion: Mon 14 MAY 89 Elapsed execution time = 3 minutes, 7:47e 26.0 659 659 seconds. SYSTEM RETURN CODE = 0