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186-192
MICROFILMED 9/28/00 DO NOT PLACE ANY NEW MATERIAL UNDER THIS PAGE PLUGGING & LOCATION CLEAR~u~CE REPORT State of Alaska Memcrandu=m To File: APi No. Well Na~e ALASKA OIL & GAS CONSERVATION COHMISSION Note casing s~ze, wt, dep~, ~t vol, a procedure. F3-j c~ '1o Ih.S---- Review the well file, and-comment on plugging, well head Well head cut off: '~'~t~(~);;. " Marker 'post or plate LOcation Clearance: Conclusions: ,,,/~',~'~~ 0 '-'0 Code 9 ~-~ STATE OF ALASKA ALASK, ~'IL AND GAS CONSERVATION C ~,MISSION WI:::! ! COMPI I::TION OR RI:COMP LI::TION REPORT AND LOG 1. Status of Well Classification of Service Well OIL [] GAS [] SUSPEI~DED [] ABANDONED [] SERVICE [] 2. Name of Operator 7. Permit Number BP Exploration 86-192 3. Address 8. APl Number P. 0. Box 196612, Anchorage, Alaska 99519-6612 5 o . 029-21680 4. Location of well at surface ~""'~- ............. 9. Unit or Lease Name 2542' NSL, 1973'WEL, Sec. 12, T1 ln, R13E, UM ,~,:~.t~.~, Prudhoe Bay Unit At Top Producing Interval i G-25 2042' NSL, 1769'WEL, Sec. 12, T11N, R13E, UM ~ F,~_._,,~ 11. Field and Pool At Total Depth ................ Prudhoe Bay Field/Prudhoe Bay Pool 333'NSL, 1117' WEL, Sec. 12, T11N, R13E, 5. Elevation in feet (indicate KB, DF, etc.) 16. Lease Designation and Serial No. 71.69 KB I 28280 12. Date Spudded 13. Date T.D. Reached 14. Date Comp., Susp. or Aband. 115. Water Depth, if offshore 116. No. of Completions 2/4/96I N/A feet USE I Zero 17. Total Depth (MD+TVD) 18. Plug Back Depth (MD+TVD) 19. Directional Survey 120. Depth where SSSV set 121. Thickness of Permafrost 8709' 8410'TVD YES [] NO []I N/A feet MD I 1900 appx 22. Type Electric or Other Logs Run 23. CASING, LINER AND CEMENTING RECOI~) SE'I-rING DEPTH MD CASING SIZE WT. PER FT. GRADE TOP BOTTOM HOLE SIZE CEMENTING RECOF~ AMOUNT PULLED 20" Surface 110' 9 c.y. 13 3/8" 72# L-80 Surface 2002' 17 1/2 3723 c.f. 13 3/8" 72# S-95 2002' 2695 17 1/2 9 5/8" 47# L-8ONSCC Surface 4221' 12 1/4" 575 c.f. 9 5/8" 47# L-8OButt 4221' 8666 12 1/4" 5 1/2" 17# TC4S 8432 10641 8 1/2" 850 c.f. 24. Perforations open to Production (MD+TVD of Top and Bottom and 25. TUBING RECORD interval, size and number) SIZE DEPTH SET (MD) PACKER SET (MD) N/A 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED retainer @ 9811' 84c. f Class "G" 800psi 6 c.f. Class "G" above retainer _~7. PRODUCTION TEST Date First Production IMethod of Operation (Flowing, gas lift, etc.) I Not on Production Date of Test Hours Tested PRODUCTION FOR OIL-BBL GAS-MCF INATER-BBL CHOKESIZE IGAS-OIL RATIO I TEST PERIOD Flow Tubing Casing Pressure CALCULATED OIL-BBL GAS-MCF INATER-BBL OIL GRAVITY-APl (corr) Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips, and presence ot oil, gas or water. Submit core chips. RECEIVED ORIGINAL Al~lm 011 & Ga~ Con~, Commi$$1~ Submit in duplicate Form 10-407 Rev. 7-1-80 CONTINUED ON REVERSE SIDE ,,~ .--~. 30. GEOLOGIC MARKER' RMATION TESTS NAME Include interval tested, pressure data, all fluids recovered and gravity, MEAS. DEPTH TRUE VERT. DEPTH GOR, and time of each phase. Sag 8542 8446 Shublik 8589 8482 Sadlerochit 8689 8557 '~1. LIST OF ATTACHMENTS =,, 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed ~ ~ ~ Title Coiled Tubino TechnicalAssistant Date 5/1/1996 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 operations Well G-23 Set whipstock / mill window 2/3/96 Pump 300 bbls filtered sea water. Inj was 5 BPM/900 psi. RIH with Baker K-1 cement retainer to 9800'. PUH to ball drop. Retainer not moving up. Able to move down. Set retainer @ 9811. Secure well for the night. 2/4/96 RIH w/stinger. Stab into retainer. Pump 15 bbls cement. Squeeze pressure built approx. 800 psi w/14 bbls below the retainer, 2 bbls behind pipe. Unstabbed and laid in 1 bbl cement above the retainer. Freeze protected tree to 150'. Freeze protected flowline. Cement = Class G w/ .52% FL-33, .1% CD-32, .34% R-11, I ghp FP-6L - 58 cc fluid loss, 6 hr TT. 2/7/96 BHA #1:. Picked up BHA #1 w/1-3/4" flex jt and dimple nose carbide mill. Tagged whipstock shallow. Tagged top at 8705' Milled to 8706.7'. Pull flex joint. BHA #2: Tagged @ 8705.5'. Reamed to 8708.7'.: Top of whipstock at 8705.3'. Top of window at 8706.5'. Bottom at 8709.7'. Window is only 3.2' long. 2/8/96 BHA#3: Tagged top of tray at 8697 Ft. Sat down at 8700.7 Ft. Mill 5.5" liner with formation mill and 2 string reamers from 8701 - 8706 ft CTD. Drill open hole from 8706 - 8720 ft CTD.Left 7.5 ft fish on bottom. Drilex motor shaft looking up, 1.875" OD. 0.80" ID. Top of fish at 8712 ft. Rig up wireline to fish BHA. Latch and pull fish. RECOVER 100% OF FISH. 2/9/96 BHA #4: Tagged at 8717' (down). Circulated clean seawater to clean tubing for downhole camera, freeze protected tubing, flowline and CT. Rig down CTU. Well left S/I. Will run downhole camera on 2/11/96. RECEIVED MAY 1 7 1996 Alaska 0tl & Gas Con;. Commission Anchorage LARRY GRANT Attn. ALASKA OIL + GAS CONSERVATION 3001 PORCUPINE DRIVE ANCHORAGE AK, 99501. Date: 16 February 1996 Transmittal of Data Sent by: HAND CARRY Dear Sir/Madam, Enclosed, please find the data as described below: WELL # DESCRIPTION 1 PLS FINAL BL+RF I PDK FINAL BL+RF I TEMP LOG FINAL BL+RF i PLS FINAL BL+RF 1 PFC/PERF FINAL BL+RF '1 pLs FINAL BL+RF I GR/CCL FINAL BL+RF Run # 1 Run # 1 Run $ 1 Run # 1 Run $ 1 Run $ 1 Run # 1 Run # 1 Run # 1 Run # 1 ECC No. 604.06 3561.04 3986.05 5062.01 5653.07 6054.06 6299.04 6454.01 6592.00 Please sign and return to: Attn. Rodney D. Paulson Western Atlas Logging Services · ,?- ....... ,~ ................ ........... ' ~. ..... 5600.B Street * .... : . Suite 201 ' ': '~::~ i:/:**¥'~'_; :' ~Ch°rage, AK 99518 ................. ~// / ............ Or--FAX.t/to ,(907) 563-7803 Received by: ~~/ /~~ Date: ~ EXl~L01~Ill0N IBP Exploration (Alaska) 900 E. Benson Blvd POB 196612 Anchorage, AK, 99519 907 561 5111 Date: Jan 22, 1995 To: Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 ~...~.,,~i~'V ~,,,, Attention' Re: Blair Wondzell Senior Petroleum Engineer Well G-23 Prep for CT Sidetrack Well G-23 is scheduled for a through tubing sidetrack to be drilled with coiled tubing. The following summarizes the procedure required to prepare G-23 for sidetracking and is submitted as an attachment to Form 10-403. 1. Perform tubing integrity test. 2. Drift tubing and liner with a 3.7" OD, 20 ft long drift. 3. Run Kinley caliper over the proposed whipstock interval to confirm condition. 4. 5. 6. . liner Rig up CTU and drift well with dummy bent housing motor. Set cement retainer on e-line at 9800 ft (50 ft above straddle) assembly. RU CT service unit. RIH with 1.3/4" coil and sting into retainer. Squeeze 14 bbls of cement below the retainer to fill the calculated volume from the bottom perforation @ 10,540' to bottom of retainer @ 9,852'. Rig up e-line unit and set whipstock.. RU CT service unit and mill window in liner. CT Drilling Engineer cc: Well File Petrotechnical Data Center ..... STATE OF ALASKA ALA OIL AND GAS CONSERVATION COMMISSI,.., ~ APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon __ Suspend __ Operation Shutdown __ Re-enter suspended well .__ Alter casing __ Repair well Plugging × Time extension __ Stimulate __ Change approved program __ Pull tubing __ Variance __ Perforate __ Other __ 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 2542'NSL, 1973'WEL, SEC. 12, T11N, R13E, UPM At top of productive interval 2042'NSL, 1769' WEL, SEC. 12, T11N, R13E, UPM 5. Type of Well: Development x Exploratory __ Stratigraphic Service At effective depth 374'NSL, 1131' WEL, SEC. 12, T11N, R13E, UPM At total depth 333'NSL, 1117'WEL, SEC. 12, T11N, R13E, UPM 12. Present well condition summary Total depth: measured 10641 true vertical ORIGINAL feet BKB 9058 feet Plugs (measured) 6. Datum elevation (DF or KB) KBE = 71.69 AMSL feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number G-23 Permit number 86-192 10. APl number 50- 029-21680 11. Field/Pool Prudhoe 0il Pool Effective depth: measured 10598 feet true vertical BKB 9053 feet Junk (measured) Casing Length Size Structural -- Conductor 110 20 Surface 2659 13 3/8 Intermediate 8630 9 5/8 Production -- Liner 2209 5 1/2 Perforation depth: measured 9930'- 10075', 10165'- 10540 Cemented 9 c.y. 3723 c.f. 575 c.f. Measured depth 146 2695 8666 True vertical depth BKB 146 2695 8540 850~ 8432-10641 8358-9058 true vertical subsea 8920'- 8978' (two intervals) Tubing (size, grade, and measured depth) JAN?- ;51996 5 1/2" L-80 stabbed into top of 5 1/2" liner (:~;,~. Cons. Commissior, Packers and SSSV (type and measured depth) A~as[..:a Oil & "' s 9 5/8" TlWpacker at 8306'; 5 1/2" SSSVat 2073' A~choraf. je 13. A~achments Description summary of proposal × Detailed operations program__ BOP sketch X 14. Estimated date for commencing operation 1/25/96 16. If proposal was verbally approved Name of approver Date approved 15. Status of well classification as: Oil__ Gas__ Suspended__ Service 17. I hereby certify~at the foregoing is true and correct to the best of my knowledge. Signed ~,/~~- Title Coiled Tubing Drifting Engineer FOR COMMISSION USE ONLY Date /~//~' / / Conditions of approval: Notify Commission so representative may witness I Approva, No. ~ - 0 I~- Plug integrity ,X. BOP Test__ Location clearance__ Mechanical Integrity Test ,~ .Su. bse. quent form required 10--~17. ~i~/~ Approved, Copy, David W. JohnSon. Approved by order of the Commission Co~ml~tu.~r .... Date Form 10-403 Rev 06/15/88 SUBMIT IN TRIPLICATE TREE: CAMERON 6" WELLHEAD: McEVOY ACTUATOR: AX£1..$ON G-23 HIGH ANGLE WELL Proposed Cement Squeeze KB. ELEV = 71.69 BF. ELEV = 35.24 SSSV LANDING NIPPLE I 2'072 I (OTIS)(4.562" ID) 13-3/8", 72#/ft, I2'695 I L-80, BTRS 9-5/8", 47#/ft, L-80, NSSC 5-1/2", 17#/ft, L-80, IJ4S TUBING TUBING ID: 4.892" CAPACITY: 0.0233 BBL/FT KOP: 7000 50° @ 8600 59° @ 8700 70° @ 8800 MAX ANGLE: 84° PERFORATION SUMMARY REF LOG: GR/CCL 1-8-87 INTERVAL IOPEN/SQZ'D Straddled Open 9930-10075 10165-10540 9-5/8", 47#/ft, I 8,665 L-80, BTRS GAS LIFT MANDRELS ((;:;Al ~lCO W/RK LATCHI N~ MD(BKB) TVDss 6 2999 3062 5 5032 5095 4 6454 6518 3 7452 7440 2 8062 8024 1 8164 8117 5-1/2" SLIDING SLEEVE OTIS XA (4.562" MIN. ID) 8,2221 TUBING SEAL ASSY. J 8,281 I (PBR) 9-5/8" PACKER (TIW HBBP) J 8,306J 5-1/2", 17#/ft, L-80 5-1/2 .... X" NIPPLE . (OTIS) (4.562" ID) J 8,346 I 5-1/2" "XN" NIPPLE I 8'387 I (OTIS) (Milled Out ID 4.51 ") TIW SEAL ASSBLY I (WITHOUT SEALS) 8,424 ~ TOP OFS-1/2" LINER I 8'4311 TIW SEAL NIPPLE I 8,4361 EXTERNAL CASING PACKER 5-1/2" PACKER (Baker "Retrieva DA") 2-7/8", 6.5#/ft, L-80, 8rd, EUE TUBING ID: 2.441 ", Cap: 0.0058 BPF 9,7091 9,852 ker Model K-1 Cement Retainer Squeeze Cement 2-7/8 .... XN" NIPPLE (OTIS) (Min. ID 2.250") 5-1/2" PACKER (Bake r "Retrieva DA") W/Anchor Seal Assembly 10,115 10,120 PBTD J 5-1/2" , 17#/ft, L-80, IJ4S I 4.892" ID 0.0233 BPF 10,598 10,641 Warning: Do Not Pump Fluids below 120°F into well. Anchor Assembly may shear. LARRY GRANT Attn. ALASKA OIL + GAS CONSERVATION 3001 PORCUPINE DRIVE ANCHORAGE AK, 99501. Date: 11 July 1995 RE: Transmittal of Data Sent by: PRIORITY MAIL Dear Sir/Madam, Enclosed, please find the data as described below: WELL G-23 DESCRIPTION 1 PLS FINAL BL+RF 1 PLS/STP FINAL BL+RF 1 PLS/STATIC FNL BL+RF 1 PLS/STP FINAL BL+RF 1 PLS/STP FINAL BL+RR ECC No. Run # 1 3771.05 Run # 1 5779.02 Run # 1 5992.03 Run # 1 6052.03 Run # 1 6454.00 Please sign and return to:Atlas Attn. Wirellm~R°dney D.~viPaulson eet ce~.~s~ .... JUL / Anchorage, AK 99518 · Or to (907) 563-7803 ~aska0i~&G~$~°ds'~°l~mi$$i°~ Anchorage Received by: Date: BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (g07) 561-5111 TO HOUSTON ARCO CHEVRON EXXON MOBIL' PHILLIPS STATE OF ALASKA GEOSCIENCES RESERVOIR ARCHIVES BP CASED HOLE FINAL LOGS Date: 07/28/89 T~: 80205 The following material is being submitted herewith. Please acknowledge receipt by signing a copy of this letter and returning it to this office: A-22 Completion 07/12/89 91 10654-11923 Sch 5' A-25 Completion 07/14,/89 91 ~!!995-!2747 Sch 5" E-28 CTU Prod 07/16/89 #1 10211-12247 Sch 5' F-23 Prod 07/18/89 91 11000-12285 Sch 5' G-18 Collar 07/19/89 91 10070-10448 Atlas 5" G-23 TDT-P 07/14/89 #1 8508-10552 Sch 5" H-26 Completion 07/14/89 ~1 8784-9984 - Sch 5' J-08 Perf-R 07/18/89 ~1 12000-12420 Sch 5' J-14 Perf-R 07/19/89 ~1 10280-10524 Sch 5" J-22 Completion 07/15/89. 91 9288-10481 Sch 5" Received: Date: Information Control Well Records LR2-1 J. Dietz/S. McCurry Standard Alaska Production Compan~ _.r~ 900 East Benson Bou d P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 STANDARD ALASKA PRODUCTION April 25, 1988 Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Attention: Mr. C. V. Chatterton Well G-23 (44-12-11-13) 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, JAB: JAM ~'J"~ Enclosures (4) J. L. Haas (MB12-1) Well Records (LR2-1) w/10 G-23 Well File J~ i~. BragS' Manager Production Engineering A unit of the original Standard Oil Company Founded in Cleveland Ohio in 1870. Operation performed: Operation shutdown [] Stimulate , ' STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Plugging [] Perforate [] Pull tubing [] Alter casing [] Other [] 2. Name of Operator Standard Alaska Production Company 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 2542' NSL, 1973' WEL, SEC. 12, T11N, RISE, UPM At top of productive interval 2042'NSL, 1769'WEL, SEC. 12, T11N, R13E, UPM At effective depth $74'NSL, 1131' WEL, SEC. 12, T11N, R13E, UPM At total depth 333'NSL, 1117'WEL, SEC. 12, T11N, R13E, UPM 5. Datum elevation (DF or KB) KBE = 71.69 AMSL feet S. Unit or Property name Prudhoe Bay Unit 7. Well number G-23 (44-12-11-13) PBU 8. Approval number 8-277 9. APl number 5 0 - 029-21680 10. Pool Prudhoe Oil Pool 1. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Length Structural -- Conductor 110 S u rface 2659 I nte rmed late 8630 Production -- Liner 2209 Perforation depth: measured 10641 feet BKB 9058 feet 10598 feet BKB 9053 feet Size Plugs (measured) Junk (measured) Cemented 9 c.y. 3723 c.f. 575 c.f. 20 13 3/8 9 5/8 5 1/2 850 c.f. 9930'- 10075', 10165'- 10540' true vertical subsea 8920' - 8978' (two intervals) Tubing (size, grade and measured depth) 5 1/2" L-80 stabbed into top of 5 1/2" liner Measured depth 146 2695 8666 8432-10641 True Vertical depth BKB 146 2695 854O 8358-9058 Packers and SSSV (type and measured depth) 9 5/8" TIWpacker at 8306'; 5 1/2" SSSV at 2073' 2. Stimulation or cement squeeze summary Intervals treated (measured) Treatment description including volumes used and final pressure , Prior to well operation Subsequent to operation Representative Daily Average Production or In!ection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure 2150 1529 5 0 328O 2217 41 0 Tubing Pressure 444 493 4. Attachments Daily Report of Well Operations [] Copies of Logs and Surveys Run [] 5. I hereby certify that the foregoing is true and correct to the best of my knowledge S'i~g~e~d ~JJ~~._. TitleManagerProductionEngineering :orm 10-404' Rev. ~1~2-1-85 ' ~ Date ,~,Z2-.~00 Submit in Duplicatu Well G-23 (44-12-11-13) PBU STIMULATION OPERATIONS A bullheaded mud acid treatment was performed April 12, 1988 on the following perforated intervals in Well G-23. 9930' - 10075' MD BKB 10165' - 10540' MD BKB The treatment fluids consisted of the following: 200 bbls. 15% HC1 400 bbls. 6% HC1 - 1.5% HF 188 bbls. diesel overflush The treatment fluids were displaced to the perforations with 200 bbls. dead crude. The well was returned immediately to production and tested. jm 4/14/88 BP EXPLORATION HOUSTON ARCO CHEVRON E~2~ON TEXACO MOBIL PHILLIPS STATE OF ALASKA ARCHIVES 1 NDEXED BP EXl01oration (Alaska) Inc. ----"'- 900 East Benson Boulevard P.O. Box 196612 Ancllorage. Alaska 99519-6612 (907) 561-5111 Date: _ 04-19-89 79983 REFERENCE: BP FL~AL DATA - PRESSURE SURVEY DATA The roi lowing material is being submi3Wred herewith. Please acknowledge receipt by signing a copy of this .let-l'er and r,'e-t'ur.nlng It to this office: ~E-25 'G-23 ~ H-29 ~ R-08 x R-10 ~ W-O1 "W-06 'W-17 "W-25 "W-29 'W-37 - W-38 ' W-40 -Y-14 - Y-19 Z-OI ~ Z-08 * Z-14 ~Z-28 Static Gradient Static Gradient Static Gradient Flowing Gradient Flowing Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient Static Gradient 03-31-89 03-31-89 04-06-89 03-10-89 03-10-89 04-10-89 04-02-89 04-10-89 03-31-89 04-01-89 03-31-89 04-01-89 03-30-89 04-02-89 04-01-89 04-02-89 04-06-89 04-03-89 04-03-89 04,-04-89 Camco Camco Camco Camco Camco Camco Camco Camco Camco Camco Camco Camco Camco Camco Camco x'~ ..... ,.,~-W,nis.si0 0/~ camco n ,.:b.. F F Rece I veal Date Shirley R. McCurry INFORMATION CONTROL Well Recor,ds LR2-1 Stc~ndard Alaska ..... Production Company 900 East Benson Boulevard P.O. Box 196612 Anchorage, ALaska 99519-6612 (907) 561-5111 STANDARD ALASKA PRODUCTION April -8, 1988 Alaska 0il & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Attention: Mr. C. V. Chatterton Well G-23 (44-12-11-13) 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, JAB:JAM~~ Enclosures (6) J. L. Haas (MB12-1) G-23 Well File anager Production Engineeri g Alaska Oil & Gas Cons. Anchorage A unit of the original Standard Oil Company Founded in Cleveland, Ohio, in 1870. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 1. Type of Request: Abandon [] Suspend [] Operation Shutdown [] Re-enter suspended well [] Alter casing [] Time extension [] Change approved program [] Plugging [] Stimulate [] Pull tubing [] Amend order [] Perforate [] Other [] 2. Name of Operator Standard Alaska Production Company 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 2542' NSL, 1973' WEL, SEC. 12, T11N, R13E, UPM At top of productive interval 2042' NSL, 1769'WEL, SEC. 12, T11N, R13E, UPM At effective depth 374'NSL, 1131' WEL, SEC. 12, T11N, R13E, UPM At total depth 333'NSL, 1117'WEL, SEC. 12, T11N, R13E, UPM 5. Datum elevation (DF or KB) KBE = 71.69 AMSL feet 6. Unit or Property name Prudhoe Bay Unit 7. Well number G-23 (44-12-11-13) PBU 8. Permit number 86-192 9. APl number 5 0 - 029-21680 10. Pool Prudhoe Oil Pool 1. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Length Structural -- Conductor 110 S u rface 2659 Intermediate 8630 Production -- Liner 2209 Perforation depth: measured 10641 feet BKB 9058 feet 10598 feet BKB 9053 feet Size Plugs (measured) Junk (measured) Cemented 9 c.y. 3723 c.f. 575 c.f. 2O 13 3/8 9 5/8 5 1/2 850 c.f. 9930'- 10075', 10165'- 10540' true vertical subsea 8920'- 8978' (two intervals) Tubing (size, grade and measured depth) 5 1/2" L-80 stabbed into top of 5 1/2" liner Measured depth 146 2695 8666 8432-10641 Packers and SSSV (type and measured depth) 9 5/8" TlWpacker at 8306'; 5 1/2" SSSV at 2073' True Vertical depth BKB 146 2695 8540 8358-9058 RECEIVED APE 1 ~ 1988 Alaska 0ii & Gas Cons. Commission Anchorage 12. Attachments Description summary of proposal [] Detailed operations program [] BOP sketch 3. Estimated date for commencing operation April 1988 4. If proposal was verbally approved Name of approver Date approved ;5. I hereby/3c~rtify that t~e.f~oregoing is true and correct to the best of my knowledge Signe.,~~~ ,/"~-'~,-) ~ TitlecommissionManagerusePrOductiOnonly Engineering Conditions of approval Notify commission so representative may witness IApproval No. [] Plug integrity- [] BOP Test [] Location clearance I ~,pOroved Copy Returned ~ Commissioner ORIGINAL SIGNED BY Approved by LONNIE C. SMITH Form 10-403 Rev 12-1-85 by order of the commission / Submit in triplicate Well G-23 (44-12-11-13) PBU STIMULATION PROPOSAL A bullheaded mud acid treatment is proposed for the following perforated intervals in Well G-23. 9930' - 10075' MD BKB 10165' - 10540' MD BKB The treatment fluids will consist of the following: 200 bbls. 15% HC1 400 bbls. 6% HC1 - 1.5% HF 200 bbls. diesel overflush The treatment fluids will be displaced to the perforations with dead crude. The well will be returned to production immediately following the treatment; then tested. The well will be nitrogen lifted, if necessary. jm 3/25/88 RECEIVED APR 1 4 1988 Alaska Oil & Gas Cons. Comm~loo Anchorage '~' B-13 ~ ¢-9 ~j~_;1A ' "~· K-13 -.~ R-2 R-23 INDEXED DALLAS ARCO c~[:v~o~ STANDARD ALASKA PRODUCTION E]O(ON TEXACO D.te: 01/06/88 TO: MOBIL TI: 78391 PHILLIPS STATE OF ALASKA GEOSCIENCES REFERENCE: SAPC CASED HOLE FINAL LOGS The following material is being submitted herewith. Please acknowledge receipt by slgning a copy of this letter and returning it to this office: CCL/?erf. 11/19/87 #1 10590-10'750 GO 5" CCL/Perf. 11/21/87 #1 9500-9800 GO 5" CNL/GR 12/28/87 #1 11830-12216 SCH 5" Spinner/TEMP/Hydro on coil tubing 11/21-22/87 #1 9750-10515 GO Plug setting & Tubing Puncher Record CCL/Perf. 11/29/87 Completion Record 12/29/87 X-Y CALIPER 11/26/87 CCL/Perf. 11/19/87 Squeeze Perf. Record 12/23/87 12/30/87 #1 3450-3734 Sch #1 9600-9832 GO 5" #1 10765-11972 Sch 5" #1 10400-11710 GO 5" #1 9500-9900 GO 5" #1 11192-12138 SCH 5" f! 5" Rece i ved Date Alas[~ Oil & Gas Cons. Commission Anchorage A un,I Ot the o,g~ot $londo,d OI Co,-pony Founded ,. Cle.elond. Oh,o. ,,, 1870 Victoria Aidridge ~ NFOR~/J ON CONTROL Wel I Records LR2-1 Production Company, 900 Eo$1 [~en~on ~Oule PO. Bo~ 19601~ Anchoroge. Alosl, o 99519 6012 (9071 .~64-.~ I I I TO: DALI~\S ARCO CHEVRON E~XON TEXACO MOBIL PHILLIPS STATE OF ALASKA ' GEOSC IENCES INDEXED STANDARD ALASKA PRODUCTION Date: 04/27/87 TI: 77844 REFERENCE: SAPC CASED HOLE FINAL LOGS The following material is being submitted herewith. Please acknowledge receipt by signlng a copy of this letter and returning It to thls offlce: B-8 D- 21 G- 23 G- 23 G- 23 G- 23 G- 23 G- 23 G- 26 H-19 M-14 Reperf ora ti.on Record Perf. Record C. H. CNL GCT CBT GR Correlation GR Gun Position CET CBT Pr od. Spinner Water Inj. Survey 04/18/87 #3 9400-9775 Sch. 2" 04/16/87 # 2 10800-11259Sch. 5" 01/11/87 ~1 8370-10512 Sch. 5" 01/27/87 #1 0-9061 Sch. 5" 01/11/87 #1 8370-10542 Sch. 5" 01/08/87 #1 7779-10301 Sch. 5" 01/13/87 #1 7750-8810 Sch. 5" 01/11/87 ~1 8370-10563 Sch. 5" 01/11/87 #- 9200-10582 Sch. 5" 04/13/87 #1 10100-11 286Sch. 5" 04/17/87 #1 10060-10540Sch. 5" ~ec~ived Date Ce lina Plack I NFORMAT I ON CONTROL Wel I Records LR2-1 Auml of the ofeg,nol Slondo,d (~1 Compeiny Founded in Clevelond. Oh,o. ,n 1870 Stan~dard Alaska P~6duclion Company 900 East Benson Boulev~ P.O. Box 196612 Anchotoge. Alaska 99519-6612 1907) 564.511 I INDEXED DALLAS ARCO CHEVRON EXXON Date: 02/20/87 TEXAC 0 77781 TO: T#: MOBIL PHILLIPS STATE OF ALASKA STANDARD ALASKA PRODUCTION REFERENCE: SAPC FINAL DATA - PRESSURE SURVEY DATA The following material Is being submitted herewith. Please acknowledge receipt by signing a copy of this letter and returning it to this office: G-23 Blip Data sheet 02/05/87 Camco G-23 Step Rate Data 02/2-5/87 Camco G-27 BHP Data sheet 11/04/86 Dres G-31 HP Pressure BU 03/05/87 Sch (log form) Rece I ved - ~.~,~,,~~ ~? 'i~f / ) Victoria Aldridge CONIROL ate /~'- ~ ~. .(.,~.~. Well Records LR2-1 o~nde~t ,n ( levelond,~ ,n 1870 ' ~ ~ ....... TO: DALLAS ARCO CHEVRON EXXON TEXACO MOBIL PHILLIPS STATE OF ALASKA GEOSC IENCES INDEXED STANDARD ALASKA PRODUCTION Do*e: 02/24/87 TI: 77739 REFERENCE: SAPC CASED HOLE FINAL LOGS The following material is being submlJ-fed herewith. Please acknowledge receipt by signing a copy of this letter and returning It to this office: - A-16 A-17 B-12 B-12 B-19 B-19 E-7 G-23 J-6 M-2 R-2 R-6 S-14 S-20 T-7 Injection Profile Injection Profile DFT Cont. Flow & CCL Cont. Flow Completion Record CCL/Perf. GR/CC~ Packer Setting 01127187 01130187 01128187 0~/28/87 01126/87 02/15/87 02101187 02/02/87 o2/13/87 Cont. Flow/Injection Profile 01/ Cont. Flow 02/06/87 Injection Profile 02/9-10/87 Cont. Flow 02/03/87 Production Profile 02/01/87 Injection Profile 01/29/87 #1 9900-11000 Camco 5" #1 10000-10300 Camco 5" #3 8850-9300 GO 5" #3 8850-9300 GO 5" #1 9350-9700 GO 5" #1 9200-9718 Sch 5" #1 9100-9432 GO 5" #2 8100-9203 Camco 5" #1 10030-11350 Sch 5" 28/87 #1 9700-10010 GO 5" #1 9390-9640 GO 5" #1 9900-10200 Camco 5" #1 10150-10900 GO 5" #2 9150-9750 Camco 5" #1 9200-9550 Camco 5" Rece i ved Date. A un;t ol the ~ig;nol S~ondo,d O~1 Company four,deal ,n C~.elo~. ~m. m 1870 ~~3,k'~ ~ ~;' '~-:;"//'~'""-'~/ ~ Victoria Aldridge ~v,; ~: ~ -': " ' INFORMATION CONTROL ~ ~;~ Wel I Records LR2-1 / ~.,..,-~:.: ............ . .... ,., .,. ,*" *' ""i '" :':? ALASKA OIL AND GAS CONSERVATION COMMISSION Telecopy No. (907) 276-7542 February 20, 1987 ADMINISTRATIVE APPROVAL NO. 213.7 Re: Productivity profile waivers Prudhoe Bay Unit (PBU) wells B-26, B-28, F-23 and G-23. ,Mr. T. N. Tyler, Manager Reservoir Operations & Production Engineering Standard Alaska Production Company P. O. Box 196612 Anchorage, AK 99519-6612 Dear Mr. Tyler: We have received your letter of February 13, 1987 requesting productivity profile waivers for PBU wells B-26, B-28, F-23 and G-23. - The Commission hereby 'waives the productivity profiles of PBU wells F-23 and G-23 due to the inability of conventional 'tools to reach the production intervals in these high angle wells. The productivity profile in PBU well B-28 is hereby waived as the well is producing from only one interval, and the survey would not provide additional data. The production profile required in PBU well B-26 is hereby postponed until after a scheduled gas shut-off has been performed. Sincerely, · Commissioner BY ORDER OF THE COMMISSION jo/3.AA213 Standard Alaska Production Company 900 East Ben$on Boule P.O. Box 196612 Anchorage. Alaska 99519-6612 (907) 564-511 ! INDEXED DALLAS ARCO CHEVRON EXXON TO: TEXACO MARATHON MOBIL PHILLIP. S STATE OF ALASKA ~EOSCIENCES REFERENOE: STANDARD ALASKA PRODUCTION Date: 01/19/87 77669 Tt: SAPC OPEN HOLE FINAL LOGS The following material is being submitted herewith. Please acknowledge recelp* by slgnlng a copy of thls letter and returnlng It to this office: DAL/UNIT/STATE: ~'-~G-23 MWD Resistivity w/Gamma plus Directional G-23 MWD Resistivity w/Gamma plus Directional Telec° 2" & 5" Teleco 2" & 5" TVD STATE ONLY: Magnetic Single Shot Directional Survey Gyroscopic Directional Survey Received Dale DIRECTIONAL SURVEYS Date: 1-5-87 Job#:AL1286D43 Date: 1~27-87 Job#: 72178 Victoria Aldridge INFORMATION CONTROL Well Records LR2-1 A un,l ot Ihe onginol Stando,d C),I Co,,,pony founded ,n Cle,,elond. Oh,o. m 1870 STATE OF ALASKA -~ G 23 HIGH ANGLE WELL ALASKA v~L AND GAS CONSERVATION CC,,tMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Status of Well Classification of Service Well OIL I~ GAS [] SUSPENDED [] ABANDONED [] SERVICE [] 2. Name of Operator 7. Permit Number Standard Alaska Production Company 86-192 3. Address 8. APl Number P. O. Box 196612 Anchoraqe Alaska 99519-6612 _50-029-21680 4. Location of well at surface 'J LOCATtOI'~,' ~ '" ii). Unit or Lease Name 2738' SNL, 1973' WEL, Sec 12, TllN, R13E Vr~F.:IFIED Prudhoe Bay Unit At Top Producing Interval ~ ~3. Well Number 3238' SNL, 1769' WEL, Sec 12, TllN, R13E ~_ .... . _._~-23 (44-12-11-13) At Total Depth 11. Field and Pool 4947' SNL, 1117' WEL, Sec 12, TllNo R13E Prudhoe Bay Field 5. Elevation in feet (indicate KB, DF, etc.) I 6. Lease Designation and Serial No. Prudhoe Bay Pool KBE = 71.69'I ADL 28280 12. Date Spudded 13. Date T.D. Reached 14. Date Comp., Susp. or Aband. 115. Water Depth, if offshore 16. No. of Completions 12-21-86 1-5-87 1-15-87I N/A feet MSt one 17. Total Depth (MD+TVD) 18.plUg Back Depth(MD+TVD) 19. Directional Survey I 20. Depth where SSSV set 21. Thickness of Permafrost 10641'MD 9058'TVD 10598"MD 9053'TVD YES~k NO []I 2073 feet MD 2022 ' 22. Type Electric or Other Logs Run MWD Resistivity w/ Gamma plus Directional MD & TVD 23. CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD CASING SIZE WT. PER FT. GRADE iTOP BOTTOM HOLE SIZE CEMENTING RECORD AMOUNT PULLED 20" Cond~:ctor Surface 110' 9 cu. yds. concrete 13-3/8" 72# L-80 Surface 2002" 17%" 3258 cu. ft. Permafz'ost E followed.-]~y 13-3/8" 72# S-,95 2002" 2695" 117%" 465 cu.ft. PermaJ'rost 9~5/8'' 47# L-80 NSC¢ Surface 4221' 12%" 9-5/8" 47# L-80 Butt 4221' 8666' 12%" 575 cu. ft. .-Class G %'/ 1% CFR-2+0.08% 5-1/2" 17~ TC4S 8432 ', 10641 '~ . az ,. · -. .. ~ 850 cu,ft. Class G.5% Halad344+.16% L SIZE DEPTH SET (MD) PACKER SET (MD) I ~" ,1 , ,5~ 17# L-80 8440'MD 8305 MD Tub. Butt. 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. PERFORATED INTERVALS; 9930 ' -10075 'MD DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 10165'- 10540'MD 9,,.-5/8" x 13-3/8" Annulus downsqueeze with 300 sks Permafrost C followed bv 125 bbl.q dry P. rl]d~ , 27. PRODUCTION TEST Date First Production I Method of Operation (Flowing, gas lift, etc.) I Date of Test Hours Tested PRODUCTION FOR OIL-BBL GAS-MCF WATER-BBL CHOKE SIZE IGAS-OILRATIO TEST PERIOD ~ Flow Tubing Casing Pressure CALCULATED OIL-BBL GAS-I~CF WATER-BBL OIL GRAVITY-APl (corr) Press. 24-HOUR RATE ~ · 28. CORE DATA Brief descript on of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. RECEIVED FEB I 1 1987 Naska 0il & Gas Cons. Commissiori Anchorage , Form 10-407 Submit in duplicate Rev. 7-1-80 CONTINUED ON REVERSE SIDE 29. ~,. 3O. 'GEOLOGIC MARK'ER'~ " "'FORMATION TESTS. NAME Include interval tested, pressure data, all fluids recovered and gravity, MEAS. DEPTH TRUE VERT. DEPTH GOR, and time of each phase. Sag. 8542 ' 8446 ' Shublik A 8589' 8482 ' Zone .~ 8689' 8557" (Top Ivishak/ Sadlerocnit) 31. LIST OF ATTACHMENTS 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Division Drilling Signed~' ~ ' ~ TitleEngineer Date INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Item 1' Classification of Service Wells' Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. Item 5: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. Item 16 and 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. Item 21' Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). Item 23: Attached supplemental records for this well should show the details of any multiple stage cement- lng and the location of the cementing tool. Item 27' Method of Operation' Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water In- jection, Gas Injection, Shut-in, Other-explain. Item 28: If no cores taken, indicate "none". Form 10-407 SAPC Daily Drilling Report -- PBU December 22, 1986 at 0600 hours Rig' AUDI #2 Well' G-23 (34-12-11-13) AFE # 120530 0600 Depth' 835' Day: -1 24-Hour Ftg: 835' Water Used: llO0 Current Operation' Drilling 17-1/2" hole. Accept rig at 1200 hrs. 12/21/86. Spud G-23 at 1530 hrs. 12/21/86. Drilling 17-1/2" hole at 835'. MUD TYPE-SPUD WT-8.7 VIS:lBO PV'12 YP-56 FL-14 SOLIDS:3.5 TEMP:61 °F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS ,,, 141 2h' FEB 1 1 19B7 Oil & Gas Oons. Gommission Anchor~g~ SAPC Daily Drilling Report -- PBU December 23, 1986 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 2256' Day: 1 24-Hour Ftg: 1421 ' Water Used: Current Operation: Drilling 17-1/2" hole. Drill to 1102'. Trip for bit. Drilling at 2256'. MUD TYPE-SPUD WT:9.5 VIS:124 PV:18 YP:39 FL:13.2 SOLIDS:9 TEMP:71 °F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 141 2h: commiSSiOn SAPC Daily Drilling Report -- PBU December 24, 1986 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) · AFE # 120530 0600 Depth: 2715' Day: 3 24-Hour Ftg: 459' Water Used: 1200 Current Operation: Nipple up BOPs. Drill to 2715' Short trip. POH. Ran 13-3/8" casing to 2695' and cemented with ~654 sks Permafrost E followed by 500 sks Permafrost. NU BOPE. MUD TYPE-Non-Dis WT:8.9 VIS:40 PV:8 YP:8 FL:23.6 SOLIDS:4 TEMP:°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 1412h: SAPC Daily Drilling Report -- PBU December 25, 1986 at 0600 hours Rig: AUDI #2 Well: G-23 !34-12-11-13) AFE # 120.530 0600 PeDth: 3950' Day: 4 24-Hour Ftg: 1235' Water Ilsed: 200 Current Operation: Drilling. Test BOPE. P. IH. Test casing to 3000 psi. Drill cement, float equipment and new hole to 2730'. Ran FIT to .77 psi/ft. Drilling at 39 50'. MUD TYPE-DISP WT:9.2 VIS:30 PV:4 YP:4 FL:16.8 SOLIDS:7 TEMP:70°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 11 2966 .6 N23.1E 2965 3.54 1 3.0& 12 3161 .2 N4.4W 3160 2.78 1.67 2.93 13 3447 .2 N49.gw 3446 1.92 2.50 2.99 14 3730 .1 S2W 3729 2.38 2.7 2.0 141 2h: SAPC Daily [1ri 1 ling Report -- PBU December 26, 1986 at 0600 hours Rig: AUDI //2 Well: G-23 I34-12-11-13) AFE # 120530 0600 Depth: 5260' Day: 5 24-Hour Ftg: 1310' Water Used: 200 Current Operation: Trip. Drill to 4532'. Trip for bit. Drill to 5260'. Trip for bit. MUD TYPE-N-DISP WT:9.3 VIS:34 PV:9 YP:7 FL:7.6 SOLIDS:7.2 TEMP:72°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS ,,, 15 4109 .1 N38. SW 4108 2.39 2.4 1.4 16 4487 . 2 N37.8W 4486 1.14 3.4 . 6 17 4764 . 3 N38.2E 4763 2.5 4. $ 1 . 4 18 51 50 . 4 S85.9E 51 49 2.2 3.4 3.8 1 41 2h: SAPC Daily Drilling Report -- PBU December 27, 1986 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 6300' Day: 6 24-Hour Ftg: 1040' Water Used: 200 Current Operation: Drilling. 'Drill to 5843'. Trip for bit. Drilling at 6300'. MUD TYPE-N-DISP WT:9.3 VIS:36 PV:IO YP:8 FL:8 SOLIDS:7 TEMP:74°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 19 5514 1.3 N34.3E 5513 2.9 20 5703 1.8 N38.2E 5702 5.8 21 5798 2.2 N13.6E 5796 11.0 22 5889 1.9 N15.6E 5897 14.0 5.7 9.8 15.5 19.0 8.6 11.6 11.0 11.9 141 2h: SAPC Daily Drilling Report -- PBU December 28, 1986 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 6930' Day: 7 24-Hour Ftg: 630' Water Used: 300 Current Operation: Trip. Drill to 6390'. Trip for bit. Drill to 6930'. Trip for bit and BHA. MUD TYPE-DISP WT:9.5 VIS:40 PV:12 YP:IO FL:7.6 SOLIDS:8.7 TEMP:82°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 23 6182 .8 N15E 6181 16 22 15 24 6562 0 N1 5E 6561 16 22 1 5 141 2h: SAPC Daily Orilling Report -- PBU December 29, 1986 at 0600 hours Rig' AUDI //2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 7275' Day: 8 24-Hour Ftg: 345' Water Used: 300 Current Operation: Drilling w/motor. Orient and drill with mud motor to 7054'. Trip for BHA. Dynadrilling at 7275'. MUD TYPE-DISP WT:9.7 VIS:35 PV:8 YP:6 FL:7.2 SOLIDS:lO.2 TEMP:86°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 25 6885 . 5 S9W 6884 - 20 25 10 26 6961 1.3 S12.8E 6960 -19 24 l0 27 7149 5.4 S28.6E 7147 -18 14 15 141 2h: SAPC Daily Drilling Report -- PBU December 30, 1986 at 0600 hours Rig: AUDI #2 Well: G-23 I34-12-11-13) AFE # 120530 0600 Depth: 7887' Day: 9 24-Hour Ft§: 61 2' Water Used: 300 Current Operation: Trip for BHA change. Dynadrilled to 7583'. Trip for bit. Dynadrill to 7887'. Trip for bit and BHA. MUD TYPE-DISP WT:9.7 VIS:36 PV:12 YP:IO FL:7.8 SOLIDS:lO.2 TEMP:88°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS ,. 28 7341 9.1 S24E 7337 15 8 25 29 7309 11.7 S23E 7501 25 35 37 30 7622 13.8 S22.6E 761 3 71 58 47 31 7810 1 6.8 S21.6E 7794 1 20 1 04 66 141 2h: SAPC Daily Drilling Report -- PBU December 31, 1986 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 8262' Day: 10 24-Hour Ftg: 375' Water Used: llO0 Current Operation: RIH w/ Dynadrill. Trip for bit and BHA. Ream Dynadrill run. Drill to 8262'. Trip for bit and BHA. MUD TYPE-DISP WT:9.9 VIS:37 PV:ll YP:9 FL:7.2 SOLIDS:Il.5 TEMP:°F SURVEY MD ANGLE DIRECTION TVD SECTION, COORDINATES DLS 32 7927 19.1 S19.8E 7905 156 138 79 33 8048 23.1 S18E 8019 200 179 93 3.3 34 8142 26.1 S15.6E 8104 239 217 104 3.4 35 8234 28.5 S14.9E 8186 281 258 115 2.6 1412h: Rig: AUDI #2 Well: G-23 ~34-12-11-13) SAPC Daily Drilling Report -- PBU January l, 1987 at 0600 hours AFE # 120530 0600 Depth: 8590' Day: ll 24-Hour Ftg: 328' Water Used: 1300 Current Operation: Wash and ream to bottom. Dynadrill to 8590'. Trip for bit and BHA. Ream 8262' to 8590'. MUD TYPE-DISP WT:9.9 VIS:36 PV:IO YP:8 FL:6.8 SOLIDS:Il.5 TEMP: °F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES 36 8379 32.2 S20.9E 8312 354 325 143 37 8502 37.6 S18.1E 8413 424 391 166 1 41 2h: DLS 3.3 Rig: AUDI #2 Well: G-23 (34-12-11-13) SAPC Daily Drilling Report -- PBU January 2, 1987 at 0600 hours AFE # 120530 0600 Depth: 8680' Day: 12 24-Hour Ftg: 90' Water Used: 1200 Current Operation: Setting 9-5/8" packoff. Drill to 8680' Short trip. POH. Ran 9-5/8" casing to 8665' and cemented with ~00 sks Class G. MUD TYPE-DISP WT:IO VIS:39 PV:12 YP:8 FL:6.8 SOLIDS:12 TEMP: °F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES 38 8657 42.5 S21.6E 8532 524 485 200 1412h: DLS 3.5 SAPC Daily Drilling Report -- PBII January 3, 1987 at 0600 hours Rig' AUDI #2 Well- G-23 (34-12-11-13) AFF. # 120530 0600 Depth' 9202' Day' 13 24-Hour Ftg' 522' Water Used: 1500 Current Operation- POH. Test 9-5/8" packoff. Test BOPE. Drill LC and 50' cement. Test casing to 3000 psi. Drill to 9202'. Trip for bit and BHA. MUD TYPE-DISP WT:9.0 VIS:33 PV:4 YP:3 FL'12.6 SOLIDS'7 TEMP:°F SURVEY MD ANGLE DIRECTION T~D SECTION COORDINATES 39 8770 46.1 S26.2E 8613 602 557 232 40 8865 50.9 S27.9E 8676 673 620 264 41 8959 56~ 1 S27~ 9E 8732 747 687 300 42 9053 61.2 S29.7E 8780 826 757 338 43 9148 66.8 S30.7E 8822 910 831 381 DLS 4.3 5.2 5.5 5,6 5.9 141 2h' SAPC Daily Drilling Report -- PBU January 4, 1987 at 0600 hours Rig: AUDI #2 Well: G-23 {34-12-11-13) AFE # 120530 0600 Depth: 9729' Day: 14 24-Hour Ftg: 527' Water Used: 1200 Current Operation: Ream to BTM f/9202 Drill with motor to 9723'. Trip for bit and BHA. Ream motor run. MUD TYPE-DISP WT:9.0 VIS:34 PV:4 YP:6 FL:6;4 SOLIDS:6 TEMP:81°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES 44 9270 70~6 S26.9E 8867 1022 931 436 45 9365 72.6 S21.9E 8896 lll2 lO13 473 46 9460 72.4 S21 . gE 8925 1202 1097 507 47 9554 78.5 S19.8E 8949 1293 1182 539 48 9644 83~ 7 S17.7E 8962 1382 1266 568 DLS 141 2h: SAPC Daily Drilling Report -- PBU January 5. 1987 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 10,562' Day: 15 24-Hour Ftg: 833' Water Used: 700 Current Operation: Drilling. Drilling at 10,$62'. MUD TYPE-DISP WT:9.2 VIS:37 PV:IO YP:5 FL:7.6 SOLIDS:7 TEMP:96°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES 49 9729 85.8 S15.6E 8970 1467 1347 592 $0 9947 85.3 S16E 8987 1679 1552 650 $1 10037 85.2 S17, 4E 8995 1773 1642 677 52 1 O132 85.1 Sl 6.3E 9003 1868 1733 105 53 10226 84.2 S17.4E go12 1961 1822 732 54 10321 84 S17E 9021 2056 1 913 760 55 lO41 5 84.2 S16j 4E 9031 '2149 2002 787 DLS 1 41 2h: SAPC Daily Drilling Report -- PBU January 6, 1987 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 10,641' Day: 16 24-Hour Ftg: 79' Water Used: 1200 Current Operation: POH. Drill to 10,641'. Short trip. POH. Ran 5-1/2" liner. Rotated, reciprocated and cemented with 720 sks Class G. Inflated ECP. POH. MUD TYPE-DISP WT:9.3 VIS:41 PV:ll YP:7 FL:7.2 SOLIDS:7.5 TEMP:°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 56 10510 83.9 Sl 8.4E 9041 2244 2092 81 6 57 10604 84.1 S18.4E 9051 2337 2181 846 58 10641 84.1 S18.4E 9055 2374 2215 858 141 2h: SAPC Daily Drilling Report -- PB~I January 7, 1987 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 10,641' Day: 17 24-Hour Ftg: ' Water Used: 300 Current Operation: Trip. POH with setting tool. RIH and clean out cement from 7646' to TOL at 8431'. CBU. POH. RIH with 4-3/4" bit. MUD TYPE-DISP WT:8.6 VIS:36 PV:5 YP:16 FL:40 SOLIDS:.3 TEMP:°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 1412h: SAPC F)aily Drillin.q P. eport -- PBU January 8, 1987 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 10,598' Day: 1 8 24-Hour Ftg: ' Water Used: 200 Current Operation: Trip. RIH. Test lap to 3000 psi. Clean out cement inside liner. Drill LC and cement to 10,598. Test liner to 3000 psi. RU Schlumberger and ran GR/CCL thru drill pipe. POH. MUD TYPE-DISP WT:8.8 VIS:36 PV:4 YP:6 FL:31 SOLIDS:4.5 TEMP:°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 1412h: SAPC Daily Drilling Report -- PBIJ January 9, 1987 at 0600 hours Rig: AUDI //2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 10,598' Day: 19 24-Hour Ftg: ' Water Used: 300 Current Operation: Displace hole. POH. RIH with mill and polish tie back recepticle. POH. RIH with 4-3/4" bit and casing scraper. CBU. Displace hole with 9.4 ppg NaC1. MUD TYPE-DISP WT:8.8 VIS:36 PV:5 YP:6 FL:29 SOLIDS:4.5 TEMP:°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 141 2h: SAPC Daily Drilling Report -- PBU January 10, 1987 at 0600 hours Rig: AUDI #2 Well: G-23 (34-12-11-13) AFE # 120530 0600 Depth: 10,641' Day: 20 24-Hour Ftg: ' Water Used: 300 Current Operation: Trip. Reverse circulate 9.4 ppg NaC1. Test liner to 3000 psi. POH. Test BOPE. Rig up Schlumberger DP conveyed CBT/CET/CNL. RIH. Logging tools Quit. POH. MUD TYPE-NaC1 WT:9.4 VIS: PV: YP: FL: SOLIDS: TEMP:°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 1 41 2h: SAPC Daily Drilling Report -- PBU January ll, 1987 at 0600 hours Rig' AUDI #2 Well' G-23 134-12-11-13) AFE # 120530 0600 Depth' 10,641' Day' 21 24-Hour Ftg' ' Water Used' 300 Current Operation' Trip. Rebuild docking head. RIH on drill pipe. Wireline shorted out. POH. Repair l~gging tools. RIH on drill pipe. Pump down cable head. Line shorted out. POH drill pipe. MUD TYPE-NaC1 WT:9.4 VIS' PV' YP' FL' SOLIDS' TEMP'°F SURVEY ~ID ANGLE DIRECTION TVD SECTION COORDINATES DLS , , 141 2h' SAPC Daily Drilling Report -- PBU January 12, 1987 at 0600 hours Rig' AUDI #2 Well' G-23 134-12-11-13) AFE # 120530 0600 Depth' 10,641' Day: 22 24-Hour Ftg' ' Water Used' 300 Current Operation' Trip. POH. Replace logging tools. RIH and logged CBT/CET/CNL. POH. RIH with bit and scraper. MUD TYPE-NaC1 WT:9.4 VIS- PV- YP' FL' SOLIDS' TEMP'°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 141 2h- SAPC Daily Drilling Report -- PBU January 13, 1987 at 0600 hours Rig- AUDI #2 Well- G-23 (34-12-11-13) AFE # 120530 0600 Depth' 10,641' Day' 23 24-Hour Ftg' ' Water Used' 300 Current Operation' Trip. RIH. Displace with 8.6 ppg filtered seawater. POH. RIH and clean out liner tie-back sleeve. POH. PU and RIH perforating guns on drill pipe. MUD TYPE-Sea Water WT-8.6 VIS' PV' YP' FL' SOLIDS' TEMP'°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 141 2h- SAPC Daily Drilling Report -- PBU January 14, 1987 at 0600 hours Rig' AUDI #2 Well' G-23 (34-12-11-13) AFE # 120530 0600 Depth' 10,641' Day' 24 24-Hour Ftg' ' Water Used' 600 Current Operation' POH Lay down DP. RIH with perforating guns. Ran GR tie in log. Fired guns. Produced well. Reverse and kill well. POH. Well taking 1 to 1.5 BPM. MUD TYPE-Sea Water WT'8.5 VIS'26 PV' YP' FL' SOLIDS' TEMP'68°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 141 2h- SAP£ Daily Drilling Report -- PBU January 15, 1987 at 0600 hours Rig' AUDI #2 Well' G-23 (34-1 2-11-13) AFE # 120530 0600 Depth' 10,641' Day' 25 24-Hour Ftg' ' Water Used' 400 Current Operation- Test 6" production tree. POH perforating guns. Ran 5-1/2" tubing with 6 GLM. ND BOPE. NIJ tree and test'to 5000 psi. MUD TYPE-Sea Water WT'8.5 VIS'26 PV- YP- FL' SOLIDS' TEMP'°F SURVEY MD ~4GLE DIRECTION TVD SECTION COORDINATES DLS 141 2h' SAPC Daily Drilling Report -- PBU January 16, 1987 at 0600 hours Rig: AL1DI #2 Well: G-23 (34-12-11-13) AF£ # 120530 0600 Depth: 10,598' Day: 26 24-Hour Ftg: ' Water Used: Current Operation: Prepare for rig move. Set plug in X nipple. Set packer. Test annulus to 2000 psi. Open sliding sleeve. Displace tubing to diesel. Close sliding sleeve. Test annulus to 2000 psi. Pull plug. Installed SSSV. Downsqueezed annulus with 300 sks Permafrost C followed by 125 bbls crude. Set BPV. Released rig at 2400 hrs. 1/15/87. MUD TYPE- WT: VIS: PV: YP: FL: SOLIDS: TEMP:°F SURVEY MD ANGLE DIRECTION TVD SECTION COORDINATES DLS 1 41 2h: GREAT LAND DIRECTIONAL DRILLING INC. F~EF'ORT OF SUB-SURFACE DIRECTIONAL. SURVEY STANDARD OIL PRODUCTION COMF'ANY C' E! ?! F: ?, i"-i Y G F'AD WELL F:'RtJDHOE BAY LYNN HENSLEY DIRECTIONAL SUF'ERVISOR .,.~, ;~.~. 'l" I i" L.. ii !~ ill C; i'q ?'~ f' U ;:.i ['i 0 FT 10641 FT Jif:: E F:' 'i" J"J Z .~'-~ "i' E t:;,'. U ~ L. ':' "" ~'''~ .. 12-20-86 1-5-87 .... , ,'-~ ~', 1~:. !'! I::' J~;~ i"~ f"t 'i' I.i) ill) ~'-":i "J"J::' ',."i~!..i J';~ I,.j tiil ¥ '"' '" '"' ...... . .. THIS IS A RECORD OF A SUD-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 8E I::'ORWARDFD TO TOt] ON WRITTEN REQUEST. ALL SURVEYS ARE KEPT IN fi LOCKED F~L.E ~ND ARE HELD iN STRICTEST FEB 1 ] i 87 GREAT LAND E}IRECTIONAL DRILLING,INC -5-87 C1 lent. .............. : STANDARD ALASKA PRODUCTION C:O. Wc.:l t - G PAD WEI_L Closur. e Di~:-ec. tiori - S I¢.i5 E Mctqr,etic. Declinotior~- 3]. deq 30 r,',in E Do. tot f i 16 thdrfle - B-523. DAf RECORD OF SURVEY IWelt assumed vet-rico. 1 F: o m p u t ct t il o n - Suz've¥ date.- Method - RKB Fie i ~4h t_.. - t,o 0.0i RADIUS OF CURVATURE MWD & SS 72.0 ft ,-- -, tnt ~c* - _._ _ MEAS OR I F T TP, UVER-F o _ E_,oEA SEf-: T l ON D l RECT l ON DEPTH [)G MN DEPTli [)EPTH DIST ANGLE 0 0 0 0.00 -72.00 0.00 N 0.00 E 167 0 0 :1~7.00 95.00 0.00 N 0.00 E . - ~ q ]. _ :[630 0 0 :1630 O0 1~=_b O0 0 O0 N 0 O0 E :1814 0 15 :1824_00 :1742.00 0.~2 S S7.00 E 200R ...... 0 15 2003 O0 19":t~ .... O0 o 93 .,c 65.00 E RE[_ATIVE COORDINATES FROM WELL-IlEA[) CLOSURE DISTANCE DC:; MFd.. ..,c: N 0 0 0 F N 0 0 0 E N 0 0 0 E SS7 0 0 E S 59 .q-1 24 E 0.00 N 0_00 E 0.00 0 .. O0 N O. O0 E O. O0 0. O0 N 0. O0 E 0 _ O0 0.22 S 0.34 E 0.40 0 62 e i 04 E I 22 DOG LEG d e q ~ 0 0. ouu F'O0 0.000 0 _ 000 238 :[ 0 0 .o-o ¢; :[. 0 -_ . . ' S ~_:.,d 0 2309 ()fO i 69 0.00 E __ · ~ . -. .. '~ .- ~ ..... ~¢NN¢d, 0 0 2696. gO =0¢z4. O0 2 _ 69 N 00g E 2/74"' 0 36 2773.99 27()~.99 :t.'-°~, N 22.00 E 2966 0 ~,°~ 2965_~°.-~ 2893.98 --0.12 N 23.~0 E °:16:1~, 0 12 3160= _.°8~, 3088.98 -1_30 N 4.40 W ;t oo ~- :t -48 E :t or: 0.90 S 2.63 E 2.86 U 94 N o 40 E P S9 - . ~ ~ . ~ . o 29 N -o 62 E 3 48 :: . U 43C'. 0. 000 0. 769' 0.000 O. 20[5 3447 0:12 3446.?8 337q.98 -2.27 N 49.70 W :q73o 0 6 3729 98 :~657 ga --_-, oo n 2 O0 W 4109 0 6 4~08.98 , -o-- . ...... 4q87 0 12 4486_97 4414.97 -3.16 N 37.80 W 4764 0 18 4763.97 4691.97 -4.22 N 38.20 E [31§0 0 24 Si49_96 S07Y.96 -4.41 S 85.90 E SS~,"~ i 18 .5513_92 S441.92 -S.O0 N 34.30 E o, i ~ S702 8~ 5630 85 -7 ~0 N 38 20 E S~ ~ ~ S797_79 S725.79 -20.23 N 13.60 E 6~ ~0 ~ 6~8~.65 6~09.~S -~8.62 N ~S.00 E 68~ ~ ~ 6884.63 6812.63 -20.69 S 9.00 W '7:t~ S 24 7148_26 7076.26 -8.61 S 28.60 E 3.I6 N ~_°.18 E 3.83 o ~:t N i 63 E ~ 34 2.75 N 1.iS E 2.98 ~_,°.53 N 0.54 E 3.$7 4.65 N 0.54 E 4.69 S.57 N 2.6:1 E 6.1S 7.82_ N 7.2d E 10.67 11.94 N 10.28 E 14.90 N 11.72 E 18.95 24.6q N 14.20 E 28.44 27.84 N IS. 06 E 31.6S 27.S7 N 16.33 E 32.04 26.38 N 16.37 E 3:1.0S :[6_lq N 20.2~ E 25.89 .rS. 57' S 30. '77 N 34 36 57 E N 29 IS S9 E N 22 38 32 E N 839:17 E N 638 0.000 0. 0 '-' fi F.', 0_ 0.03,:5 0.02,.'t-, 0 ~t ~ . O. 423 0. 365 O. 1.58 0.093 1. 053 2. 182 PAD WELL 1-5-87 MEAS E P T H 7[507 7622 '~10 7927 8048 £_ 8234 8379 50= 8637 8770 8959 9053 =.-- 148 9270 9365 9460 95[54 9644 100:737 10132_ ;i O,_.,...o TM o -- 10321 10-415 105510 10605 10641 DR i Fl' I'RUV[:RT SUBSFA SECT I ON DO MN DEPTH DEF'-FIt DIST 1:[ 42 7501 or: ~z~ oo ~ 29 13 48 7614..12 7542.:[2 70.~1 ..... pm. ~2 772.3.42. :[20.15 :t9 6 7906.72 7834 _ 72 :136. :[9 23 ~'; 80:19. S9 7947. S9 299.74 2¢5 6 8105.04 8033.04 238.83 oc, :'40 8.186.79 4 28 .92 ,_o ._. , 8:1:[ .79 0 · 32_".,.= ~ 83:1. '1 ...... 90 82:39 90 .ri.q4 13 37 36 84.12.74 83~0.74 4-24- _ ~7 -qB 30 81531.35 8459.3S [!,24. :IS 4,4 6 86 J. 2.2 .1 8554 0.2{ l 602.76 S0 54 8675. '14 8603. :l..q 673.23 S6 ,..,-'-- 87.3:1 . 04 ._, ,..,n tq r: -,v,_,: .04 7,57 .89 61 12 8779.9.3 8707.9.3 827. O0 66 48 8~32.:I. 5[5 8749.5[-5 920.77 70 .~r; 8863 86 o.:~c-~ 86 10==_79 72 36 8895. BE, "- ~-" . . W8~3 85 22:[2 52 72 24 8924. ~1 8852. q:i IEOB. 02 78 30 p~no. 02 .~.- .g 8876. OB 2293.92 83 42 8962.94 8889.9q 1382_ 80 85 48 8969.72 8897.72 1467..33 ~S 18 8986.24 89:14.24 1679.3~ om 8994 ....... d,u 22 _1.1 8922 1:1 177= 9n 8~_, A_ '~O0,_. ...... 2~ 89nf) 24 2868 .%1 84 22 9020.90 8938.90 1962.02 84 0 902_0_67 8948.67 2056. g6 84 12. 9030..33 8958..233 2149.9.1 8:3 54 9040.28 8968. :[8 22~4.38 84 6 9050 _ 0 :[ 897(3.0.1 2337_ 85 ~34 6 9053_ 8 :[ ;SIPS .1.8 .1 2374.65 RECORD OF SURVEY REC"f I ON ANGLE 23 :q0 E 22. E,O E 2:1_80 E :[9. AO E :18 O0 E RELAT I VE COORD I NA'FES [:ROM WELL-ttFAD 33.02 S .q2.99 E 56_39 S 52.(38 E 102.3q S 71.S4 E :13o 07 ~ ,~ o9 E 277 27 o 98 fl F} E S 26.20 E =/. E.',O E · ...J _ f . . - S 29_70 E S .30.70 E S 15.60 E S '16_00 E S 17.,kO E S 16.30 E o 17_40 E S '17.00 E S :1.7.40 E S 18.40 E S '18_40 E S :18_ 40 E 557.30 S 232_ 60 E 620. 68 o"" 264 . ,..,:,~o E 687.46 S 300.:18 E 757.79 S 338.82_, E 831.55 S 381.7'7 E Ct ASUFIE DOG ~ F'-:- - .- t- ~.--~..2 DI S'[ANCE [)G MN S deq/iO() 54.20 S 52 28 26 E 1.566 77.30 S 43 9 BO E 1_826 224 87 ::~F~ S7 2.1 E 2 [:c,,- .160.06 S 31 46 34 E I )'3 2n':,,~ .... 75 S 29 1 orc~, E ._q_314 2-!'_.q :1. :133 ._% 2. 7 3 4 S E 3.2_ 30 282.56 S 2..5 18 3.9 E 2.6:14 425.47 S 2?3 4 41 E 4.47:i .t32t:_.. .... h:~ S~_~_°° 27 6r).. ~ E~" _ -,,_'~°'---,~ 603.87 S 2.2. 39 14 E "3.833 o- c 532 750.14 S 23 830.09 S 24 915_00 S . _ o,c. 5 ?."'4:1 _ :12{ S q ,_,,.: :1 E :l 028. :.'3_ 6 1013.18 S 473.7.3 E :1128.46 :1.097. ,_..,or: S 507. 5°._, E 1208 .94. -oo 539 89 E -I299 67 11=,,__ 2:q e 1266.39 S 568.46 E 1388. :I3 'I347.48 S 592.71 E -1472.08 :[5131 _ 8:1 S 650_ 5::3 E :1682_ 65 1642.~49 S 677.74 E 1776.82 17.'..--},3.09 S 705_ 18 E :1871.06 · - "'D'D c'* 18,_,_. ~6 o 732_ . BO E 1.9~q . ;27 1912.93 S 760.25 E 2058.46 2002 ~- .=,:~ o 787.90 E 21[.51.69 poop :16 S ........ ~46. O0 2:[80 .... 87 s-~ 846 4[-; E 2"-'~547,_,_. .37 221F;_. 79 ,_,c'- ,_..,° r: '::'._, ,_, . 0,:'5 E 23'Z,":; . :i::3 S 25 7 :l E 4.1,47 S 2[-:,3 33 E r.:, '~b S 24 49 2i E O_ S 24 32 42 E ,.'3.835 S 24 10 ,_,_,°'-'n E 6.22:1 S 2.3 44 3S E o 22 44 38 E S 22 o~ o.1 E S 22 8 27 E S 2.1 SB 2~ E 3_ 0 :I. 467 1.1S4 1.507-3 S 2.-1 40 27 E S 2I 28 48 E S 2:1 29 4,:3 E S 2.1 '12 45 E S 2:[ 20 8 E 0 _ ,',,,67 0 _ 472 1. 0.2:113 0. 000 G PAD WELL DATA '[NTERPOt_ATED FOR EVEN 100 FEET 01= SLB.,..3EA DEPTH 1-5-87 MEAS. DEPT tt 72 172 q'72 772 8'72 972 :I 072 1:172 &_ f~._ :i 3;"'2 ].472 :I 6'72 1872 :I972 L _'T) '...3 ",/ £- ~ f £2 2772 2972 TRU VER-[ SUI3 SEA MD-TVD [) f_--- P 1" H DEP -f' H D I FF. "',"'2 0 0 172 100 0 ,_~_ 200 0 372 300 0 -',,, 72 400 0 VERTtCA[_ CORRECT 0 0 0 0 0 RELAT I VE E:OORD I NATEES FROM WELL-ttEAD 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 O..O0 E .[572 500 0 0 0.00 N 0.00 E 672 ,:500 0 0 0.00 N 0.00 IE 77::-2_' 700 0 0 0.00 N 0 _ Of.) E 872 800 0 0 0.00 N 0.00 E 9'72 900 0 0 0.00 N 0.00 E i072 :i :172 :1272 :t --.:2,-.,-, o :147' 2 !000 0 0 -110 O 0 0 1200 0 0 17300 0 0 1~{ O0 0 0 11500 0 0 1600 0 0 1700 0 0 1800 0 0 1900 0 0 2000 O 0 ='1riO 0 0 t.-_ _ ,._,_ 00 0 f~ 2300 0 0 24 O0 0 0 2500 0 0 2600 0 0 2700 0 0 2800 0 0 2900 0 0 -t t.~'7, :_~ .L~.- i' 1672 1772 1872 1972 2072 2:172 2272 237° ,- 2572 £_ i' fL 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 0.71 S 1.32 E 0.72 S 1.61 E O.6,h o ~' :[.79 E 0 53 c- i 83 E 1.28 S 1.48 E 1.28 S 1.48 E i 28e i 48 E 0.92 S 1.34 E 0.0~ N 2.0:1 E I 02 N '-~ 43 Er PAD WELL ~t23 DATA INTERPOLATED FOR EVEN 100 FEET OF SUBSEA DEP~It MEAS_ DE P TH :3072 3172_ 3272 3472 3772 :_d U ! ,u 397;2 ~. 072 6:172 -g272 5372 -g~72 h672 4772 ~872 .g o 72 E, 072 [3172 5272 5372 E. 672 S772 5872 TRU VERT DE P T H 3072 3472 C-J6'Z2 3772 39'72 4072 4 172 4[572 4672 ~772 o-- 5 r;} 72 .%172 .52'72 F~-_~7-~ 54 '72 S S 72 S772 S872 SUB SEA MD--TVD DE:P T H D i FF. 53 000 0 ._,~:[00 0 53200 0 o-_,O 0 0 3500 0 VERI' ICAL RELATIVE COORDINATES CORRECT FROM WELL-HEEAD 0 1.83 N 2.63 E 0 'de.33 N 2.62 E ~..:_,.'-_~ N ~'~. 53 E 0 ~. 20 N ° 11 E 3 S 00 0 0 3600 0 0 :'-37 00 0 0 3800 0 0 3900 0 0 · "-l, 000 0 0 -.'.'.~ 100 0 0 ~200 0 0 z+ 300 0 0 q5 O0 0 0 450'0 0 0 4 ,:'_400 0 0 qTO0 0 0 · ~800 0 0 qgO0 0 0 SO00 0 0 5100 0 0 5200 0 0 5300 0 0 5400 0 0 SBO0 0 0 5600 0 0 5700 0 0 5800 0 0 [5900 0 0 3.7q N 0.30 E 3_86 N 0.11 W q.69 N 0..t37 E r: ld. N 0 8z~ E 5.73 N 1.00 E 6.37 N 1.03 EE 5. 56 N ~°. 78 E 5.69 N 3.77 E 6_20 N S_ll E 7.22 N 6_62 E 8.98 N 8.03 E 11.32 N 9.51 E 13.98 N 11.42 E 17.50 N :t2.34 E 20.q7 N :13.03 F_ G ~AD WEL DATA INTERPO[_ATED FOR EVEN 100 FEEET OF SUBSEA DEPTtt MEAS. DEPTH 6 :t72 e~272 6372 647TM 6572 6672 6772 6(.372 6972 7073 7:173 7274 737F.; '7477 t ,__,,.J ~_ 7786 789:l 7F-"97 8106 c, ..-:~ 17 8452 8579 TRU VERT DEPTH 6t372 6 :I 72 -tg._ f g 6372 6472 6572 .~-- ..,-" "-'~' ,'5772 6872 6972 7072 7 :t. 72 727~ 7'o72 7472 7572 7672 7972 8072 8172 a'37~ 8472 SUB SEEA MD-TVD DEPTtt DI FF. c50 O0 0 ,5:100 0 6200 0 6 [300 0 ,.'5, 4 00 0 VERTICAL CORRECT 0 0 0 0 0 ,:5 S 00 0 0 6600 0 0 6700 0 0 6800 0 0 6900 0 0 700 O 7:1 O 0 7200. 7300 7400 7500 7 2 760'0 10 3 7700 14 4 7800 19 c 7900 25 6 8000 34 9 8100 45 ,.,,_c' ~ ,.,n 0 8300 80 19 8 4 00 10 7 27 a714__ ~ ~- ~'-~ 8500 14 8860 8,.:.572 8600 18(3 9008 ,_,,ow°,,_ 8700 266 ...... ts,:, ~_ BSO 0 4:1.7 9758 8972 8900 786 3S 4,:5 78 :1.51 369 RELAI"I VF C:OORDINATES FROM WE:t_L-ttEAD ~ 82 N i3 .q6 E 24.5,:5` N 13.93 E 25.75 N :14.50 E 26.72 N 't4.76 E 27.43 N 14.95 E 27.8.'_'-3 N iS. 07 E :',c . 29 _ c,J N 14 9.4 E 2 (:3.S3 N 514.44 E ,:~c, 30 N I° 88 E 26.1:1 N 16.43 E oI -~,o N 17 84 E 14.09 N ~"-'1.37 E 3.73 N 27.43 E 1[0.(50 S 33.22 E 27.37 S 40.80 E 47.:[:[ S 49.:[2 E 70.04 S S8.61 E 9S.6S u 69.S8 E 1 *-'* t - --r--. .... ~q.8',' b WU 74 E 158.79 o ¢' 92.70 EE 199_ 49 S IOS. 9:'4__ E 2--'+/. 7~_ S 1:1.9 09 E ,_,u,_.31 S :[35 08 E 36,2.99 S 151.3_.41 E 437_32 S 182.57 E S21.17 S 215.73 E 6:17.42 S 263.18 E 746. 21...o"-' .._,,.._.,,.._'°°° . 28 E 947.42 S 444.96 E 137E,.76 S 600.62 E G PAD WELl {/23 · DATA INTERF'OLATED FOR EVEN 1000 FEEET OF MEASURED DEPTH MEAS TRU VERT SL[., SEA DE P T ii DE F' T H DE P'f H :[ 000 :t 000 928 2000 2000 1928 3000 3000 4000 4 000 5000 S000 4928 6000 6000 [5928 7000 7000 69-'28 8000 7975 '7903 9000 87[53 868 :[ 0000 8991 89 :I.9 RELATIVE COORDINATES FROM WELL-14EAD 0.00 N 0.00 E 0.6:1` ,_., ~-' 1 . OS E i 27 N "-~ q'~ E ~ L ~ -,.-,t i5.':2I N 1.02 E 2.5. 159. 717. ld07. :tS N 13_:I. 9 E 2~:_._, N I,.'-:; .66 tE c-,oS ~:3 lfl E 8:1,S 3:[6.5:t E 2_,'6 S 666.88 E HORIZONTAL VIEW STANDARD ALASKA PRODUCTION CO. G PAD WELL #23 CLOSUR~ 2376 ft S 2t.2 E DECLINATION: 31.50 de§ E SCALE: t inch: 400 feet DRAWN: 1-5-87 200 200 400 800 iO00 :t400 t800 2000 2200 2400 ~600 200 0 200 400 600 BO0 tO00 i200 t400 t600 tSO0 2000 2200 600 i200 2400 3O00 3600 4200 48O0 5400 6000 6600 7200 7800 8400 9O00 9600 iO~O0 i0800 -6O0 VERTICAL SECTION STANDARD ALASKA PRODUCTION CO. .................. G PAD NELL #23 SECTION AT S I9.15 E ...................... TVD SCALE · t inch = t200 feet DEP SCALE · I inch = t200 feet ..... ~ ............. DRAWN ' t-5-87 I~m~' lamttft~ttffi ffi 1YO DI!PlIT .............. - _ .... 0 600 i200 i800 2400 3000 3600 4200 4800 5400 6000 6600 Depar'tuPe SUB-SURFACE DIRECTIONAL SURVEY' FEB 1 1 1987 Alaska Oil & Gas Cons, Commission Anchora9~ ~UIDANCE ~'~ONTINUOUS ~-~OOL Company ..... STANDARD ALASKA PRODUCTION COM, PANY WoJl mamo ,G-23(34-12-11-1.31(2738' SNL,1973" WELmSEC 12,TllN,R13E) Field/Location PRUDHOE BAY, NORTH S'LOPI~, ALA~;~A _ JOb Reference No. 72]78 JOHNSON RECEIVED FEB 1 ] 198/ Anchorage Date 27-JAN-87 Computed By: KRUWELL GCT DIRECTIONAL SURVEY CUSTOMER LISTING FOR STANDARD ALASKA PRODUCTION CO G-25 PRDDHOE BAY NORTH SLOPE~ALASKA SURVEY DATE: 27-JAN-B7 ENGINEER: G. J~HNSON M=THODS OF COMPUTATION TOOL LOC~TION: TANGENTIAL= AVERAGED DEVIATION AND AZIMUTH INTERPOLATION: LINEAR VERTICAL SECTION: HORIZ. DIST. PROJECTED ONTO A ~ARGET AZIMUTH OF SOUTH 19 OEG 6 MIN EAST DAT~ FROM SURFACE TO 9048~ ACQUIRED WITH TANGENTIAL METHOD FROM SCHLUMBERGER GCT TOOL. DATA FROM 9053' TO DRILLERS TO 10641' ACQUIRED WITH RADIUS OF CURVATURE METRO0 FROM TELECO MEASUREO WHILE DRILLING SURVEY. MWD DATA TIED TO GCT DATA AT DEPTH COMPUTATION DATE: 2-FEB-87 PAGE STANDARD ALASKA PRODUCTION CO G-23 PRUDHOE BAY NORTH SLOPE,ALASKA DATE OF SURVEY: 27-JAN-87 KELLY BUSHING ELEVATION: 71.69 FT' ENGINEER: G. JOHNSON INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL. DEViATION AZIMUTH OEPTH DEPTH 0.00 0.00 100.00 100.00 200.00 200,00 300.00 300.00 400.00 400.00 500.00 500.00 600.00 600.00 700.00 700.00 800,00 800,00 900.00 900.00 1000.00 1000.00 928.31 1100.00 1100.00 1028.31 1200.00 1200.00 1128.31 1300.00 1300.00 1228.31 1400.00 1400.00 1328.31 1500.00 1500.00 1428.31 1600.00 1600.00 1528.31 1700.00 1700.00 1628.31 1800.00 1799.99 1728.30 1900.00 1899.99 1828.30 DEPTH DEG MIN , -71.69 . 0 0 28.31 0 5 128.31 0 4 228,31 0 5 328,31 0 6 428,31. 0 9 528.31 '0 9 628,31 728.31 0 8 828.31 0 7 0 4 0 8 0 8 0 7 0 3 0 1 0 15 0 i0 0 18 0 4 VERTICAL DOGLEG RECTANGULAR COORDINATES HDRIZ. DEPARTURE SECTION SEVERITY NORTH/SDU~TH EASl/WEST ~IST. AZIMUTH 2000.00 1999.99 1928.30 2100.00 2099.99 2028.30 2200.00 2199.99 2128.30 2300.00 2299.99 2228.30 2400.00 2399.99 2328.30 2500.00 2499.99 2428.30 2600.00 2599.99 2528.30 2700.00 2699.99 2628.30 2800.00 2~99.99 2728.30 2900.00 2~99.99 2828.30 3100.00 3~99 28.29 zoo.oo ' oo.oo 3400,00 9 - '3'328.29 3500,00 9 ~§,29 oo.oo 3700.00 ~99· , 3800,00 37 , ,29 3900.00 38 __~,.98 3828.29 0 8 0 11 0 2 0 13 0 12 0 6 0 6 015 0 23 0 30 0 18 0 15 0 2.1 0 20 015 0 14 0 10 0 10 0 0 10 DEG MIN FEET DEG/lOO FEET FEET N 0 0 E 0.00 0~00 0.00 N 0.00 S 75 20 W -0.15 0,32 0.06 N 0.29 N 80 18 E -0.09 0.18 0.00 N 0.26 S 59 36 E -0.04 0.12 0.00 S 0.14 S 30 12 W 0',11 0,27 0,15 S 0.08 N 66 5 W 0,07 0,18 0.19 S 0,31 N 39 21 ~ -0.15 0.08 0.02 S 0.52 N 38 6 W -0,40 0.05 0.19 N 0,69 N 15 19 W -0.66 0.13 0.42 N 0,82 N 65 53 f -0.85 0.21 0.63 N 0.77 S 27 45 W -0,77 0,29 0,59 N 0,64 S 84 43 W -0.76 0.13 0.52 N 0.82 S 51 18 W -0,76 0,37 0,44 N 1,04 S 23 43 E -0,58 0,18 0,24 N 1,07 N 33 18 E -0.48 0.16 0.18 N 0.95 N 15 40 W -0,58 0,15 0,27 N 0.98 S 9 10 E '-0,43 0,19 0,14 N 0,92 S 24 2'3 W -0.04 0.14 0.28 S 0.94 S 39 36 E 0.20 0,10 0,50 S 0,84 S 24 15 E 0.59 0.28 0.85 S 0.66 S 34 9 E S 55 9 E S 47 13 E S 74 59 E S 57 12 E S 30 36 E N 5 23 E N 47 43 E N 28 1 E N 14 28 E N 18 51 E N 1 51 E N 11 58 W N 11 10 W N 30 52 W N 44 7 W N 35 26 W N 56 26 W S 18 50 W N 47 34 W FEET OEG MIN 0.00 N 0 0 E 0.30 N 77 50 W 0.26 N 88 55 W 0.14 S 89 33 W 0.17 S 28 9 W 0.36 S 58 53 ~ :i 0.52 S 87 36 k 0,71 N 74 29 W 0.92 N 63 1I W I, O0 N 50 37 W 0,87 N 47 14 W 0,97 N 57 21 W 1,13 N 66 56 W 1,10 N 77 15 W 0,97 N 79 34 W 1.02 N 74 34 W 0.93 N 81 21 W 0.99 S 73 24 W 0.97 S 59 2 ~ 1.08 S 37 36 W 0.85 0.85 1,04 S 0.41 1o07 0.18 1.18 S 0.15 1.25 0.22 1.33 S 0.01 1,38 0,12 1,37 S 0.24 1,62 0,10 1,52 S 0,56 1,89 0,35 1,72 S 0.80 1.95 0.27 1.76 S 0.8~ 1.77 0.28 1.50 S 1.07 1,45 0,36 1,03 S 1.43 0,83 0,26 0.28 S 1.73 0,14 0,21 0,50 N 1,89 -0,30 0,09 1,00 N 1,95 -0,81 0,52 1,52 N 1,91 -1.50 0.19 2.21 N 1.80 -1.97 0.09 2.67 N 1.68 -2.36 0.21 3.01 N 1.48 -2.73 0.92 3.31 N 1.21 -2.94 0.10 3.45 N 0.96 -3,05 0,48 3,52 N 0,c~4 -3.16 0,3.9 3,55 N 0,60 1.12 S Z1 31 W 1,19 S 7 23 W 1.33 S 0 22 W 1.3'9 S 9 47 E 1.62 S ZO 14 E 1.90 S 24 51 E 1.96 S 2O 10 E 1.84 S 35 30 E 1.76 S 54 7 E 1,76 S 80 z;7 E 1.95 N 75 3 E 2.19 N 62 55 E 2.44 N 51 31 E 2.~5 N 3~ 14 E 3.15 N 32 11 E 3.35 N 25 8 E 3.52 N ZO 9 E 3.55 N 15 32 E 3.62 N 13 24 f 3.60 N 9 33 E STANDARD ALASKA PRODUCTION G-23 PRUDHOE BAY NORTH SLOPE,ALASKA CO COMPUTATION OATE: 2-FEB-87 iNTERPOLATED VALUES FOR dVEN 100 TRuE SUB-SEA MEASURED VERTICAL VERTICAL DEPTH DEPTH DEPTH 4000.00 3999.98 3928.29 4100.00 4099.98 4028.29 ~200.00 4199.98 4128.29 4300.00 4299.98 4228.29 4400.00 4399.95 4328.29 4500.00 4499.98 4428.29 4600.00 4599.98 4528.29 4700.00 4699.98 4628.29 4800.00 4799.98 4728.29 4900.00 4899.98 4828.29 5000.00 4999.98 4928.29 5100.00 5099.97 5028.28 5200.00 5199.97 5128.28 5300.00 5299.97 5228.28 5400.00 5399.96 5328.27 5500.00 5499.93 5428.24 5600.00 5599.89 5528,20 5700.00 5699.83 5628.14 5800.00 5799.76 5728.07 5900,00 5899.69 5828.00 6000.00 5999.64 5927.95 6100.00 6099.62 6027.93 6200.00 6199.61 6127.92 6300.00 6299.61 6227.92 6400.00 6399.61 6327.92 6500.00 6499.61 6427.92 6600.00 6599.6i 6527.92 6700.00 6699.61 6627.92 6800.00 6799.60 6727.91 6900.00 6899.60 6827.91 7000.00 6999.58 6927.89 7100.00 7099.44 7027.75 7200.00 7198.95 7127.26 7300.00 7298.06 7226.37 7400.00 7396.79 7325.10 7500.00 7495.08 7423.39 7600.00 7592.77 7521.05 7700.00 7889.70 7618.01 7800.00 7785.86 7714.17 7900.00 7881.28 7809.59 ~COURSE VERTICAL DEVIATION AZIMUTH SECTION DEG MIN DEG MIN FEET ~0 5 N 17 17 E -3.40 0 1 S 68 25 E -3.42 0 3 S 37 36 W -3.38 0 15 N 45 53 W -3.66 0 8 N 44 4~ E -3.89 0~ 15 N 38 54 W -4.27 0 7 N 40 53 E -4.47 0 9 N 59 53 ~ -4.55 0 10 N 70 58 E -4.55 0 7 N 69 31 E -4.56 0 3 N 88 1 E -4.54 0 25 N 86 26 E -4.46 0 27 N 76 27 E -4.31 0 33 N 59 40 E -4.34 ! 8 N 37 14 E -4.97 1 28 N 32 37 E -6.35 1 44 N 27 5 E -8.10 2 4 N 18 ll E -10.64 2 17 N 16 5 E -13.78 ! 57 N '14 53 E -16.97 1 18 N 14 54 E -19.31 0 57 N 11 38 E -20.98 0 37 N I1 36 E -22.19 0 22 N 11 24 E -22.96 0 16 N 0 13 E -23.44 0 8 S 47 39 W -23.70 0 15 S 52 20 W -23.53 0 23 S 45 44 W -23.39 0 30 S 26 57 W -22.93 0 39 S 22 36 W -22.23 1 41 S 13 57 E -20.61 4 14 S 31 0 E -15.60 6 44 S 26 3 E -5.91 8 25 S 23 58 E 7.30 9 48 S 23 39 E 23.12 11 35 S 22 25 E 41.49 13 13 S 22 29 E 62.83 15 8 S 23 3 E 87.31 16 38 S 22 30 E 114.69 18 17 S 21 36 E 144.56 FEE DOG SEV BEG T OF LEG ERITY /100 DATE OF SURVEY: KELLY BUSHING ELEVATION: ENGINEER: MEASURED DEPTH RECTANGULAR COORDINATES' HORIZ. NORTH/SOUTH EAST/WEST 'DIST. FEET FEET F~ET 0.23 3.77 N 0.50 E 3.80 0.02 3.81 N 0.58 E 3.86 0.20 3.78 N 0.60 E 3.83 0.05 3.98 N 0.33 E 4.00 0.14 4.19 N 0.23 E 4.20 0.18 4.55 N 0.09 E 4.55 0.15 4.75 N 0.05 E 4.75 0.I7 4.90 N 0.25 E 4.91 0.03 5.00 N 0.54 E 5.03 0.26 5.10 N 0.80 E 5.16 0.12 5.12 N 0.92 E 5.20 0.04 5.21 N 1.43 E 5.41 0.14 5.32 N 2.1~ E 5.75 0.37 5.63 N 2.99 E 6.37 0.63 6.64 N 4.01 E 7.76 0.12 8.57 N 5.33 E 10.10 0.79 10.91 N 6.75 E 12.82 0.42 14.04 N $.01 E 16.16 0.14 17.74 N 9.12 E 19.95 1.34 21.45 N 10.08 E 23.70 0.62 0.11 0.36 0.31 0.15 0.12 0.58 0.09 0.26 0.23 2.24 2.90 1.65 0.97 1.04 1.74 2.23 1.71 1.49 2.43 24.18 N 10.82 E 26.50 26.12 N 11.32 E 25.47 27.51 N 11.64 E 29.87 28.39 N 11.83 E 30.76 28.92 N 11.90 E 31.27 29.18 N 11.82 E 31.4~ 28.94 N 11.64 E 31.19 28.63 N 11.18 E 30.74 27.99 N 10.76 E 29.99 27.10 N 10.31 E 28.99 25.35 N 10.21 E 27.33 20.83 N 12.47 E 24.28 12.21 N 17.19 E 21.08 0.14 N 22.72 E 22.72 14.38 S 29.11 E 32.47 31.32 S 36.36 E 47.99 51.07 S 44.53 E 67.7~ 73.69 S 54.02 E 91.37 98.98 S 64.65 E 118.22 126.70 S 75.88 E 147.69 PAGE Z 27-jAN-87 71.69 FT G. JOHNSON DEPARTUR~ AZIMUTM DEG MIN N 7 g9 E N 8 37 E N 9 4 E N 4 45 E N 3 7 E N 1 11 E N 0 33 E N 2 55 E N 6 9 E N 8 55 E N 10 8 E N 15 21 E N 22 19 E N 27 55 E N 31 5 E N 31 53 E N 31 44 E N 29 42 E N 27 13 E N 25 gE N 24 6 E N 23 25 E N 22 55 E N 22 36 E N 22 21 E N 22 2 E N 21 54 E N 21 20 E N 21 1~ N 20 50 E N 21 56 E N 3O 54 E N 54 36 E N 89 38 E S 65 42 E S 49 15 E S 41 5 E S 36 14 E S 33 9 E S 30 54 E STANDARD ALASKA PRODUCTION CD G-23 PRUDMOE BAY NORTH SLOPE,ALASKA COMPUTATION DATE: 2-F~8-87 PA'GE 3 O~T~ OF SURVEY: Z7-JAN-87 KELLY BUSHING ELEVATION: 71.69 FT ENGINEER: G. JONNSON INTERPGLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN 8000,00 7975,41 7903,72 ~ 21 16 8100,00 8067,61 7995,92" 24 24 8200.00 8157.60 8085.91 27 17 8300.00 8245,40 8173.71 2941 8400.00 8331.12 8259.43 32 45 8500.00 8413.00 8341.31 37 1 8600.00 8490.42 8418.73 41 2 8700.00 8564.66 8492.97' 43' 9 8800.00 8635.11 8563.42 47 26 8900.00 8699.29 8627.60 52 44 9000,00 8755.97 8684.28 57 57 DEG MIN S 18 30 E S 16 38 E S 14 59 E S 18 4 E S 20 35 E S 18 10 E S 21 16 E S 24 15 E S 25 58 E S 27 47 E VERTICAL DOGLEG RECTANGULAR COORDINATES MORIZ, DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET OEG/IO0 FEET FEET FEET' DEG MIN 178.27 3.05 216.94 3.27 260.44 3.30 308.20 2.73 359.66 3.70 417.02 4.39 480.26 3.39 547.13 4.09 617.63 4.74 693.53 5.74 S 29 16 E 774,76 158,38 S 8'7,42 E 180,90 S 28 53 E 195,27 S 99,08 E 218,97 S 26 54 237,25 S 110,78 E 261,84 S 25 I E 283.30 S 123.74 E 309.15 S 23 35 E 331.57 S 141.62 E 360.55 S 23 7 E 385.70 S 160.59 E 417.80 S 22 36 F 445.28 S 181.82 E 480.97 S 22 12 507.16 S Z07.47 E 547.96 S 22 14 E 571,25 S 237,87 E 618,79 S ZZ 36 639.53 S 272.63 E 695.22 S 23 5 E 6,08 711,85 S 312,02 E 77?,23 .S 23 40 E 9053,00 ~* TIE IN POINT GOING FROM GCT TO MWD DATA (SEE 'INTERPOLATED VALUES FOR CHOSEN HORIZONS), 9100,00 8802,63 8730,94 63 44 9200,00 8843,78 8772,09 68 25 9300.00 8878.67 8806.98 71 13 9400,00 8909.74 8838.05 72 31 9500.00 8937.84 8666.15 74 59 9600.00 8958.50 8886.81 81 9 9700.00 8970.49 8898.80 84 43 9800.00 8979.01 8907.32 85 36 9900.00 8986.85 8915.16 85 23 S 30 15 E 859.11 S 29 4 E 950.95 S 25 19 E 1043.53 S 21 53 E 1138.25 S 21 0 E 1234.11 S 18 43 E 1331.78 S 16 49 E 1430.92 S 15 59 E 1530.44 S 15 59 E 1629.97 5.45 5.24 4.62 3.50 3.04 6.52 4.26 1.32 0.22 786.26 S 354.91 E 882.65 S 24 17 E 867.53 S 400.89 E 955.68 S 24 48 E 950.57 S 444.02 E 10~9.16 S 2~ 2 E 1037.68 S 481.92 E 1144.13 S 24 54 E 1126.97 S 517.03 E 1239-91 S 24 38 E 1218.84 S 550.21 ~ 1337.27 S' 24 17 ~ 1313.33 S 580.3~ E 14~5.83 S 23 50 E 1408.87 S 608.54 E 1534.68 S 23 21 E 1504.69 S 636.02 E 1633.59 S 22 54 E 10000.00 8995.02 8923.33 85 14 10100.00 9003.41 8931.71 85 ~ 10200.00 9012.47 8940.78 84 26 10300.00 9022.53 8950.8W 84 2 10400.00 9032.77 8961.08 84 10 10500.00 9043.16 8971.47 83 55 10600.00 9053.58 8981.89 84 5 10641.00 9057.80 8986.11 84 5 S 16 51 E 1729,51 S 16 56 E 1829,09 S 17 12 E 1928,63 S 17 5 E 2028,09 S 17 20 E 2127.50 S 18 17 E 2226,92 S 18 24 E 2326,36 S 18 24 E 2367.14 0.99 0.99 1.08 0.63 0.11 0.98 0'. 26 0.00 1600,27 S 664,17 E 1732,53 S 22 32 E 1695,62 S 693.17 E 1831,83 S 22 14 E 1790.84 S 722,37 E 1931.05 S 21 58 E 1885,94 S 751,72 E 2030.24 S 21 43 = 1980.95 S 781,14 E 2129.40 S 21 31 E 2075,.64 S 811,53 E 2228,64 S 21 21 E 2170,03 S 842,84 E 2327,96 S 21 13 E 2208,72 S 855.72 E 2368,69 S 21 10 E STANDARD ALASKA PRODUCTION CO G-23 PRUDHOE BAY NORTH SLOPE,ALASKA COMPUTATION DA'T E: 2-FEB-87 PaGE DATE OF SURVEY: ZT-JAN-87. KELLY BUSHING ELEVATION: 71.69 FT ENGINEER: G. JOHNSON INTERPOLATED VALUES FOR EVEN 1000 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION 4ZIMDTM OEPTH DEPTH DEPTH .DEG MIN DEG MIN 0.00 0.00 -71.69 O' 0 1000.00 1000.00 928.31 0 4 2000.00 1999.99 1928.30 0 8 3000.00 2999.98 2928.29 0 18 4000.00 3999.98 3928.29 O' 5 5000.00 4999.98 4928.29 0 3 6000.00 5999.64 5927.95 1 18 7000.00 6999.58 6927.89 i 41 8000.00 7975.41 7903.72 21 16 9000.00 8755.97 8684.28 57 57 VERTICAL DOGLEG 'RECTANGULAR COORDINATES HOR'IZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEGtlO0 FEET FEET FEET OEG MIN N 0 0 E 0.00 0.00 0.00 N 0.00 S 27 45 W -0.77 0.29 0.59 N 0.6~+ S 34 9 E 0.85 0o~5 1.04 S 0.41 N 18 51 E 0.14 0.21 0.50 N 1.89 N 17 17 E -3.40 0.23 3.77 N 0.50 N 88 1 ~ -4.54 0.12 5.12 N 0.92 N 14 54 E -19.3I 0.62 24.18 N 10.82 S 13 57 E -20.61 2.24 25.35 N 10.21 S 18 30 E 178.27 3.05 158.38 S S 29 16 E 774.76 6.08 0.00 N 0 0 E 0.87 N 47 14 W 1.12 S 21 31 ~ 1.95 N 75 3 E 3.80 N 7 29 E 5.20 N 10 8 26.50 N 24 6 ~ 27.33 N 21 56 E 87.42 E 180.90 S ga 53 E 711.85 S 312.02 E 777.23 S 23 40 E 9053.00 ~$~ TIE IN POINT GOING FROM GCT TO MWD DATA (SEE INTERPOLATED VALUES FOR CHOSEN HORIZONS). g~:X~ 10000.00 8995.02 8923.33 85 14 S 16 51 E 1729.51 0.99 1600.27 S 664.17 E 1732.63 S 22 32 E 10641.00 9057.80 8986.11 84 5 S 18 24 E 2367.14 0.00 2208.72 S 855.7~ E 2368.69 S 21 10 E COMPUTATION O~TE: 2-FEB-87 PAGE STANDARD ALASKA PRODUCTION CO G-23 PRUDHOE BAY NORTH SLOPE~ALASKA DATE OF SURVEY: 2T-JAN 87 . KELLY ~USHING ELEVATION: 71.69 FT ENGINEER: G, JOHNSON INTERPOLATED VALUES FOR EVEN 100 FEET OF SUB-SEA DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ, DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST, AZIMUTH FEET gEG/IO0 FEET FEiT FEET DEG MIN 0.00 0,00 -71.69 ' 0 0 N 0 0 E 71,69 71,69 0,00 0 I0 N 80 19 W 171.69 171,69 100.00 03 S 62 7 E 271,69 271,69 200.00 0 4 S 78 47 E 371.69 371.69 300.00 0 6 .S 1 45 W 471.69 471.69 400.00 08 N 88 54 W 571.69 571.69 500.00 0 9 N 48 58 W 671.69 671.69 600.00 0 9 N 36 40 W 771,69 771,69 TO0,O0 0 9 N 26 37 W 871.69 871.69 800.00 0 8 N 31 58 E 0.00 0.00 0.00 N 0.00 E -0.13 0.35 0.06 N 0.23 W -0.10 0.12 0.01 N 0.29 W -0,07 0.14 0.01 N 0.17 W 0,07 0,21 0.10 S 0,06 W 0.12 0,25 0,20 S 0.23 W -0.08 0.09 0.08 S 0.47 W -0.33 0.05 0.13 N 0.64 W -0.59 0.13 0.35 N 0.80 W -0.83 0.36 0.59 N 0.82 W 0,00 N 0 0 E 0,24 N 75 36 W 0,29 N 87 57 W 0.17 N. 85 19 W 0,12 S 33 58 W 0,31 S 48 46 ~ '~ 0.48 S 80 42 N 0.65 N 78 21 W 0,87 N 66 29 W 1,01 N 54 11 W 971.69 971,69 900.00 1071,69 1071,69 1000,00 1171.69 1171,69 1100,00 1271.69 1271.69 1200.00 1371.69 1371.69 1300.00 1471.69 1471.69 1400.00 1571.69 1571.69 1500.00 1671,69 1671,69 1600.00 1771.69 1771.69 1700.00 1871.70 1871.69 1800.00 0 4 S 36 41 E 0 7 S 74 25 W 0 8 S 71 0 W 0 7 S 16 7 E 0 4 S 83 1 E 0 3 N 27 44 W 0 9 S 27 44 E 013 S 8 38 W 0 10 S 52 59 E 0 10 S 10 9 E -0.80 0,26 0,62 N 0.64 -0,74 0,26 0,53 N 0.75 -0.77 0,10 0,47 N 0.98 -0,64 0,08 0,30 N' 1.09 -0,48 0,20 0,16 N 0,98 -0.55 0.08 0.25 N 0.97 -0.54 0.66 0.24 N 0.9,5 -0.12 0.32 0.19 S 0.91 0.08 0.75 0.41 S 0,93 0.54 0.92 0.80 S 0.67 0.90 N 45 52 %q 0.92 N 54 47 W I · 09 N 64 17 W 1.13 N 74 40 W 0.99 N 80 26 ~ 1.00 N 75 36 W 0,98 N 75 31 W 0.93 S 78 6 W 1.02 S 66 13 W 1.04 S 39 36 W 1971.70 1971.69 1900,00 2071,70 2071.69 2000,00 2171.70 2171.69 2100.00 2271.70 2271.69 2200.00 2371,70 2371.69 2300.00 2471.70 2471.69 2400.00 2571.70 2571.69 2500.00 2671.70 2671.69 2600.00 2771.70 2771.69 2700.00 2871.70 2871.69 2800.00 0 14 S 48 59 E 0 14 S 56 51 E 0 5 S 27 50 E 0 14 S 73 33 E 0 12 S 61 41 E 0 9 S 47 0 E 0 2 N 77 34 E 0 13 N 46 44 E 0 21 N 34 20 E 0 29 N 19 2 E 0.76 0.23 0.96 S 0.47 0,98 O,1Z 1,12 S 0.24 1,22 O.1B 1,30 S 0,03 1.31 0.24 1.34 S 0.12 1.55 0.07 1.47 S 0.48 1.82 0.16 1.67 S 0.75 1.97 0.33 1.79 S 0.86 1.82 0.14 1.58 S 0.99 1.56 0.13 1.19 S 1.33 1.04 0.25 0.52 S 1.66 1.07 S 26 7 W 1.15 S 1Z 16 W 1.30 S 1 10 w 1.35 S 5 18 E 1.55 S 17 54 E 1.83 S 24 21 E 1.98 $ 25 34 E 1.86 S 31 55 E 1.79 S 46 16 E 1.74 $ 72 30 E 2971,71 2971,69 2900.00 3071.71 3071.69 3000.00 3171.71 3171.69 3100.00 3271.71 3271.69 3200.00 3371.71 3371.69 3300.00 3471.71 3471.69 3400.00 3571.71 3571.69, 3500.00 3671.71 3671.69 3600.00 3771.71 3771.69 3700.00 3871.71 3871.69 3800.00 0 27 N 11 33 E 0 17 N 3 24 E 0 19 N 6 22 W 0 23 N 7 57 W 0 13 N 17 !1 W 0 12 N 21 35 W 0 12 N 43 35 W 0 9 N 65 21 W 0 4 S 22 58 E 0 I0 N 72 1 W 0.29 0.83 0.33 N 1.8. -0.17 0.20 0.86 N 1.95 -0.65 0.02 1.36 N 1.94 -1.32 0.19 2.03 N 1.83 -1.84 0.78 2.55 N 1.73 -2.26 0.68 2.93 N 1.54 -2.64 0.05 3.23 N 1.27 -2.88 0.11 3.40 N 1.03 -3.08 1.16 3.56 N 0.85 -3.09 0.31 3.50 N 0.67 1.87 N 79 43 6 2,13 N 66 13 E 2.37 N 54 54 E 2.73 N 42 8 E 3.09 N 34 11 E 3.31 N 27 44 5 3.47 N 21 29 E 3.56 N 16 49 E 3.b6 N 13 25 E 3.56 N 10 50 E COMPUTATION 0ATE: STANDARD ALASKA PRODUCTION G-23 PRUOHOE BAY NORTH SLOPE,ALASKA CO TRU MEASURED VERTI DEPTH OEP INTERPOLATEO VALUES FOR E SUB-SEA COURSE CAL VERTICAL DEVIATION AZIMUTH TH OEPTH DEG MIN DEG MIN 3900.00 ~'0 '7 N 10 45 W 4000.00 0 3 N 81 25 E 4100.00 ' 0 1 S 16 24 E 4200.00 0 15 N 47 52 W 4300.00 0 6 N 38 24 E 4400.00 0 1'5 N 32 31 W 4500.00 0 5 N 22 10 E 4600.00 0 10 N 54 41 E 4?00.00 0 11 N 76 6 E 4800.00 0 8 N 64 ? E 3971.71 3971.69 4071.71 4071.69 4171.71 4171.69 4271.71 4271.69 4371.71 4371.69 4471.71 4471.69 4571.71 4571.69 4671.71 4671.69 4771.71 4771.69 4871.71 4871.69 EVEN VERTIC SECTI FEE 2-FE8-87 4971.71 4971.69 5071.72 5071.69 5171.72 5171.69 5271.72 5271.69 5371.73 5371.69 54?1.75 5471.69 5571.79 5571.69 5671.83 5671.59 5771.91 5771.69 5871.99 5871.69 5972.04 5971.69 6072.06 6071.69 6172.07 6171.69 6272.08 6271.69 6372.08 6371.69 6472.08 6471.69 6572.08 6571.69 6672.08 6671.69 6772.08 6771.69 6872.09 6871.69 6972.10 6971.69 7072.18 7071.69 7172.56 7171.69 7273.35 7271.69 7374.53 7371.69 7476.14 7471.69 7578.38 7571.69 7681.35 7671.69 7785.22 7771.69 7889.91 7871.69 4900.00 0 2 N 85 i0 E 5000.00 0 26 N 86 25 E 5100.00 0 26 N 80 5 E 5200.00 0 30 N 65 27 E 5300.00 0 57 N 41 4 E 5400.00 1 25 N 33 48 E 5500.00 1 36 N 30 41 E 5600.00 2 0 N 20 33 E 5700.00 2 15 N 16 8 E 5800.00 2 9 N 13 21 E 5900.00 1 29 N 14 ZO E 6000.00 I 4 N 13 34 E 6100.00 0 44 N 12 32 E 6200.00 0 27 N 11 55 E 0300.00 0 20 N 7 14 E 6400.00 0 9 N 44 41 W 6500.00 0 10 .S 21 58 W 6600.00 0 19 S 51 13 W 6700.00 0 27 S 30 31 W 6800.00 0 36 S 25 51 W 6900.00 I 13 S I 46 E 7000.00 3 28 S 29 21 E 7100.00 6 lb S 27 26 E 7200.00 8 6 S 23 54 E 7300.00 9 30 S 23 43 = 7400.00 11 9 S 22 46 E 7500.00 12 47 S 22 31 E 7600.00 14 48 S 23 0 E 7700.00 10 25 S 22 39 E 7800.00 18 4 S 21 45 E 100 FEET AL C, OGL ON SEVE T DE G/ KELLY OF SOB-SEA DEPTH EG RECTANGULAR RITY NORTH/SDUTH 100 FEET -3.35 0.27 3.71 N -3.42 0.33 3.82 N -3.39 0.14 3.80 N -3.54 0.65 3.89 N -3'.86 0.15 4.15 N -4.14 0.08 4'44 N -4.44 0.08 4.71 N -4.53 0.14 4.86 N -4.55 0.12 4.98 N -4.55 0.30 5.07 N DATE DF SURVEY: BUSHING ELEVATION: ENGINEER: PAGE 6 2T-JAN-S7 71.69 FT G. JOHNSON COORDINATES MORIZ. DEPARTURE EAST/WEST DIST. AZIMUTH FEET FEET DEG MIN 0.49 ~ 3.75 N 7 34 E 0.56 E 3,86 N 8 23 0.61 E 3.85 N 9 6 0.42 E 3.91 N 6 9 E 0.19 E 4.15 N 2 33 E 0.17 E 4.44 N 2 10 O.OZ E 4.71 N 0 0.19 E 4.86 N 2 11 0.46 E 5.00 N 5 13 0.75 E 5.12 N 8 22 5.20 N 9 51 E 5.34 N 13 9 E 5.63 N ZO 26 E 6.16 N 26 32 E 7.24 N 30 32 E 9.38 N 31 49 E 12.00 N 31 55 E 15.18 N 30 2.3 E 18.85 N 27 52 ~ 22.70 N 25 41 E 25.82 N 24 20 E 28.00 N 23 36 E 29.55 N 23 3 E 30.55 N 22 41 E 31.14 N 22 27 E 31.52 N 22 9 ~ 31.29 N 21 57 E 30.90 N 21 28 E 30.22 N Z1 4 E 29.30 N 20 52 E 27.93 N Z1 11 6 25.23 N 27 10 E 21.78 N 46 29 E 21.46 N 80 12 E 29.32 S 69 5 E 43.83 S 52 1 E 63.16 S 42 29 E 86.69 S 36 58 E 114.09 $ 33 32 E 144.58 S 31 6 E -4.55 0.02 5.12 N 0.89 -4.52 0.12 5.20 N 1.22 -4.34 0.14 5.27 N 1.97 -4.31 0.21 5.51 N 2.75 -4.69 0.80 6.24 N 3.6~ -5.91 0.34 7.97 N 4.95 -7.55 0.58 10.19 N 6.35 -9.86 0.32 13.09 N 7.68 -12.86 0.33 16.66 N 8.81 -16.11 0.31 20.45 N 9.84 -18.75 0.77 23.53 N 10.65 -20.57 1.13 25.66 N 11.22 -21.90 0.41 27.19 N 11.57 -22.78 0.34 28.19 N 11.78 -23.30 1.30 28.78 N 11.90 -23.69 1.63 29.19 N 11.89 -23.59 0.26 29.02 N 11.70 -23.47 0.63 28.75 N 11.31 -23.09 0.19 28.20 N 10.87 -22.45 0.16 27.38 N 10.44 -21.30 1.80 26.04 N 10.10 -17.44 2.66 22.45 N 11.52 -9.00 2.11 15.00 N 15.80 3.47 1.38 3.65 N 21.17 18.85 1.34 10.46 S 27.39 36.79 2.32 26.96 S 34.55 57.97 1.87 46.57 S 42.67 82.51 1.93 69.26 S 52.13 110.49 1.42 95.10 S 63.03 141.42 1o98 ~ 123.78 S 74.71 STANDARD ALASKA PRODUCTION CO G-23 PRUDMOE BAY NORTH SLOPEDALAS.KA COMPUTATION DATE: 2-FEB-ST PAGE 7 DATE OF SURVEY: IT-JAN-87 KELLY BUSHING ELEVATION: 71.69 FT ENGINEER: G. JOHNSON INTERPCLATED VALUES FOR EVEN 100 FEET OF SUB-SEA DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG M'IN DEG MIN 7996.01 7971.69 7900.00 21 · 9 8104.48 8071.69 8000.00 24 32 8215.90 8171.69 8100.00 27 44 8330.31 8271.69 8200.00 ~30 ,19 8448.93 8371.69 8300.00 34 ~57 8575.30 8471.69 8400.00 40 19 8709.66 8571.69 8500.00 43 30 8855.60 8671.69 8600.00 50: 24 9030.36 8771.69 8700.00 59 37 VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/iO0 FEET FEET FEET DEG MIN S 18 36 E 176.82 3.12 S 16 33 E 218.79 3.36 S 14 51 E 267.77 2.42 S 19 57 E 323.29 5.28 S 19 21 E 386.99 3.94 S 20 29 E 464.16 3.92 S 24 33 E 553.72 4.37 S 27 5 E 659.13 5.82 S 29 42 E 800.31 6.42 157.01 S 86.96 E 179.49 S 28 58 e 197.04 S 99.61 E 220.79 S 26 ~9 E 244.36 S 112.6~ : 269.08 S 24 45 E 297.58 S 128.65 E 324.20 S 23 22 E 357.27 S 150.94 E 387.85 S 22 54 E 430.24 S 176.07 E 464.87 S 22 15 E 513.19 S 210.20 E 554.57 S 22 16 E 608.67 S 256.60 E 650.55 S 22 51 E 734.46 S 324.80 E 803.07 S 23 51 E 9053.00 ~ TIE IN POINT GOING FROM GCT TO MWD DATA (SEE INTERPOLATED VALUES FOR CHOSEN HORIZONS). 9277.89 ~871.69 8800.00 70 45 9712.96 8971.69 8900.00 84 57 10641.00 9057.80 8986.11 84 5 S 26 29 E 1022.66 S 16 37 E 1443.81 S 18 24 E 2367.14 ~.35 3.81 0.00 931.48 S 435.36 E 1028.20 S 25 3 E 1325.67 S 584.0'7 E 1448.64 S 23 46 E 2208.72 S 855.72 E 1368.69 S 21 10 E SCHLUMBER©ER O I RECT I ONAL SURVEY COMPANY STANDARD ALASKA PRODUCTION WELL 0-23 FI ELD PRUOHOE BAY COUNTRY USA RUN ! 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SCALED IN VERTICAL BEPTHS HORIZ SCALE = 1/S00 IN/FT TELECO Teleco Oilfield Set, ,s of Alaska Inc. 6116 Nielson Way Anchorage, AK 99502 (907) 562-2646 January 9, 1987 JOB #554 STANDARD ALASKA PRODUCTION CO. WELL: G-23 PRUDHOE BAY RIG: AUD #2 Please find attached a copy of the computer calculated MWD directional surveys for the above mentioned well. We at Teleco appreciate this opportunity to provide service to Standard Alaska Production Company. Teleco is committed to providing the highest quality of service and we would welcome any comments or questions concerning these surveys or any of our other services. Sincerely, Pat Havard Field Service Supervisor PH/el Enclosures A ~'1' COMPANY TELECO OILFIELD SERVICES JOB 554 TAK SURVEY CALCULATIONS Date 01/07/87 Page 1 Company: SAPC Well: G-23 Location: PRUDHOE BAY Rig: AUD#2 TELECO Job # 554 TAK Grid Correction: Magnetic Declination: Total Correction: Proposed Direction: 0.00 degrees 31.50 degrees 31.50 degrees 160.90 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 2696%0 0~ 2774~°~$ ~01~ 2210 N 22 00 E 2966.~0o ~ 23 1 N 23 06 E o 3161 00~' 0.2 355·6 N 04 24 W · 3447'00 ~ 0.2 310.3 N 49 42 W 0.0 N 00 00 E 2695.00 TELECO MWD 2772.99 2964.98 3159.98 3445.98 1.85 1.22S 2.11E 2.43 S 59.964E 0.000 1.48 0.81S 2.18E 2.33 S 69.583E 0.757 -0.01 1.04N 2.96E 3.13 N 70.605E 0.000 -1.20 2.37N 3.17E 3.96 N 53.260E 0.222 -2.16 3.23N 2.73E 4.24 N 40.194E 0.054 3730.00 0.1 182.0 S 02 00 W 3728.98 -2.11 3.00N 2.19E 3.71 N 36.210E 0.097 TELECO Job # 554 TAK 01/07/87 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' 4109.00 0.1 321.5 N 38 30 W 4107.98 -2.12 2.84N 1.71E 3.31 N 31.084E 0.050 4487.00 0.2 322.2 N 37 48 W 4485.97 -3.05 3.61N 1.10E 3.77 N 17.031E 0.028 4764.00 0.3 38.2 N 38 12 E 4762.97 -4.11 4.73N 1.11E 4.86 N 13.195E 0.115 5150.00 0.4 94.1 S 85 54 E 5148.96 -4.29 5.64N 3.17E 6.47 N 29.323E 0.088 5514.00 1.3 38.2 N 38 12 E 5512.92 -4.72 7.74N 7.91E 11.07 N 45.628E 0.309 5703.00 1.8 16.4 N 16 24 E 5701.85 -8.23 12.26N 10.24E 15.98 N 39.887E 0.405 5798.00 2.2 13.6 N 13 36 E 5796.79 -10.98 15.46N ll.10E 19.04 N 35.685E 0.433 5899.00 1.9 15.3 N 15 18 E 5897.73 -13.99 18.96N 12.00E 22.44 N 32.343E 0.303 5993.00 1.3 9.0 N 09 00 E 5991.69 -16.23 21.52N 12.56E 24.92 N 30.260E 0.664 6182.00 0.8 15.7 N 15 42 E 6180.66 -19.18 24.90N 13.30E 28.23 N 28.101E 0.272 6562.00 0.2 246.3 S 66 18 W 6560.64 -21.48 26.65N 11.29E 28.94 N 22.969E 0.247 6885.00 0.5 189.4 S 09 24 W 6883.64 -20.45 25.15N 10.13E 27.12 N 21.943E 0.132 6961.00 1.3 167.2 S 12 48 E 6959.63 -19.32 23.97N 10.17E 26.04 N 22.990E 1.130 7054.00 3.2 149.3 S 30 42 E 7052.55 -15.69 20.59N ll.51E 23.59 N 29.217E 2.154 7149.00 5.4 151.4 S 28 36 E 7147.28 -8.69 14.40N 15.04E 20.82 N 46.237E 2.322 7341.00 9.1 156.0 S 24 00 E 7337.71 15.33 7.30S 25.77E 26.78 S 74.171E 1.949 7507.00 11.7 156.7 S 23 18 E 7500.97 45.20 34.75S 37.79E 51.34 S 47.398E 1.568 TELECO Job # 554 TAK 01/07/87 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' **************************************************************************************************** 7622.00 13.8 157.4 S 22 36 E 7613.12 70.52 58.12S 47.68E 75.18 S 39.367E 1.831 7810.00 16.8 158.4 S 21 36 E 7794.44 120.06 104.08S 66.34E 123.43 S 32.516E 1.602 7927.00 19.1 160.2 S 19 48 E 7905.74 156.10 137.80S 79.09E 158.89 S 29.853E 2.022 8048.00 23.1 162.0 S 18 00 E 8018.60 199.65 179.00S 93.19E 201.81 S 27.503E 3.349 8142.00 26.1 164.4 S 15 36 E 8104.06 238.74 216.46S 104.50E 240.37 S 25.771E 3.363 8237.00 28.5 165.1 S 14 54 E 8188.47 282.21 258.49S 115.96E 283.31 S 24.162E 2.549 8379.00 32.2 159.1 S 20 54 E 8310.99 353.90 326.72S 138.00E 354.67 S 22.898E 3.366 8502.00 37.6 161.9 S 18 06 E 8411.83 424.23 393.03S 161.48E 424.91 S 22.336E 4.578 8657.00 42.5 158.4 S 21 36 E 8530.45 523.92 486.80S 195.33E 524.53 S 21.864E 3.478 8770.00 46.1 153.8 S 26 12 E 8611.31 602.53 558.92S 227.29E 603.37 S 22.130E 4.268 8865.00 50.9 152.1 S 27 54 E 8674.24 672.97 622.27S 259.64E 674.26 S 22.648E 5.227 8959.00 56.1 152.1 S 27 54 E 8730.13 747.62 689.04S 294.95E 749.52 S 23.174E 5.532 9053.00 61.2 150.3 S 29 42 E 8779.02 826.72 759.36S 333.60E 829.41 S 23.717E 5.666 9148.00 66.8 149.3 S 30 42 E 8820.65 910.48 833.13S 376.54E 914.27 S 24.321E 5.970 9270.00 70.6 153.1 S 26 54 E 8864.96 1022.48' 932.70S 431.28E 1027.59 S 24.816E 4.257 9365.00 72.6 158.1 S 21 54 E 8894.94 1112.20 1014.76S 468.50E 1117.69 S 24.782E 5.419 9460.00 72.4 158.1 S 21 54 E 8923.51 1202.70 1098.85S 502.25E 1208.19 S 24.564E 0.220 TELECO Job # 554 TAK 01/07/87 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 ' 9554.00 78.5 160.2 S 19 48 E 8947.11 1293.60 1183.83S 534.62E 1298.95 S 24.304E 6.840 9644.00 83.7 162.3 S 17 42 E 8961.03 1382.47 1267.99S 563.19E 1387.44 S 23.949E 6.220 9753.00 85.7 164.0 S 16 00 E 8971.10 1490.92 1371.86S 594.64E 1495.19 S 23.435E 2.404 9848.00 85.5 164.0 S 16 00 E 8978.39 1585.50 1462.93S 620.71E 1589.16 S 22.991E 0.220 9942.00 85.3 164.0 S 16 00 E 8985.93 1679.06 1553.01S 646.49E 1682.20 S 22.601E 0.223 10037.00 85.2 162.6 S 17 24 E 8993.79 1773.65 1643.69S 673.69E 1776.40 S 22.287E 1.472 10132.00 85.1 163.3 S 16 42 E 9001.83 1868.25 1734.19S 701.45E 1870.68 S 22.022E 0.743 10226.00 84.2 162.6 S 17 24 E 9010.59 1961.78 1823.67S 728.89E 1963.93 S 21.786E 1.211 10321.00 84.0 163.0 S 17 00 E 9020.35 2056.22 1913.94S 756.83E 2058.14 S 21.575E 0.469 10415.00 84.2 162.6 S 17 24 E 9030.01 2149.68 2003.26S 784.48E 2151.39 S 21.385E 0.474 10510.00 83.9 161.6 S 18 24 E 9039.86 2244.14 2093.17S 813.52E 2245.71 S 21.239E 1.094 10604.00 84.1 161.6 S 18 24 E 9049.68 2337.62 2181.90S 842.98E 2339.08 S 21.124E 0.223 TEL~CO 0 i 1 ~ i ~ 1 d Smrv i c~s PLAN VIEW 400 400 800 1200 1600 2000 2400 280O ;9200 O 400 800 1200 1600 2000 2400 EAST (~t) TELLCO Oil~imld Smr'viom$ VERT I CAL PROJECT I ON - 1000 0 ! 000 2000 3000 4000 5000 2000 . ~ ..~_~._~ ........ ~_~.-.~ .... ~ .... ~___~..,.~_ __7~~_.:~~~:~~~ ~~~;U~ ~~['~7~" ~.,c~._~.e_.~ _Lr/~'K~L'~'--~'&"-~~ L_ .~ ...~t. &'-_ I, ! J, .~_[__'.JL__LI J/ : t, i J ~ J i J j i ~ j ~ ij I~ ~ I ~ I i I ~ J [ . I t / , ., ~ , ,, .= ..... l ......... ~_ __LL ................................ Lr: ~'J~'F ~a, 4-%-;* i'~~- -~ ! '-;' I~ ~'-I .... ' .... q ~'--, .... ~ F.. J .i ; ' i "~ .,~__ ~., ~-' 'i a'--~ 9*~ ~,' i , ,* j ~"' :, , , ~ : I '~ , ~ I / , I ~ j ~j [-', -- 1 .... ~I ~ ...... ~ I i --~-'-~' i-- U~~---I--~--~4-~'-- ~-i--~-.-~ .... P-i ..... ~--~--"~-~'~--'~--~- ~ ~--k--~ ...... ~--S .... ~-.+ .... ~.-?-~..~ ~-~ --4---- ~ .... 4-+ ........ ~-q--4-- 3000 4000 5ooo 8000 7000 8000 go00 lO000 llO00 VERTICAL SECTION (~t) ARCO EXXON STANDARD AL ASKA PRODI..JCTION Date: 01/19/87 RI): PHILLIPS Ti: 77665 STAT~. OF AK PDBY Systems (Transmittal Only) SAPC MAGNETIC LIS TAPES & LISTINGS The following material is being subnitted herewith. Please acknowledge receipt by - signing a copy of this letter and returning it to this office: *G-23 CH CNL 01/11/87 #1 Sch #72167 Tape Pos. #05046 [ "~ Alaska Oil & Gas Cons. Commission \ , Anchorage * EXXON: An Asterisk (*) ~t to a li/ting above means you should have received the Tape(s) and s) directly from tile respective service company. Please confirm this. Received Date Victoria Aldridge INFO~%ATION Well Records December 18, 1986 Mr. R. $. Allan Division Drilling Engineer Standard Alaska Production Company P.O. Box 196612 Anchorage, Alaska 99519-6612 Telecopy: (907) 276-7542 Re: Prudhoe Bay Unit G-23 Standard Alaska. Production Company Permit No. 86-192 Sur. Loc. 2738'SNL, 1973'WEL, Sec. 12, TllN, R13E, I~. Btmhole Loc. 5018'S5rL, llSi'WEL, Sec. 12, TllN, R13E, UM. Dear Mr. Allan: Enclosed is the approved application for permit to drill the above referenced well. The permit to drill does not indemnify you from the probable need to obtain additional permits required by law from other governmental agencies prior to commencing operations at the well site. To aid us in scheduling field work, please notify this office 24 hours prior to commencing installation of the blowout prevention equipment so that a representative of the Commission may be present to witness testing of the equipment before the surface casing shoe is drilled. Where a diverter system is required, please also notify this office 24 hours prior to commencing equipment installation so that the Commission may witness testing before drilling below the shoe of the conductor pipe. trt~l~u~s,, C. V. Chatter'ton Chairman of Alaska Oil and Gas Conservation Commission BY ORDER OF nE CO~-~ISSION dlf Enclosure cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. Mr. Doug L. Lowery STATE OF ALASKA ALASKA Oil AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 AAC 25.005 HTGH ANGLE i la. Type of work Drill [] Redrill FII lb. Type of well. Exploratory [] Stratigraphic Test [] Development Oil [] Re-Entry [] Deepen[]1 Service [] Developement Gas [] Single Zone [] Multiple Zone [] ~! 2. Name of Operator 5, Datum Elevation (DF or KB) 10. Field and Pool ~Standard Alaska Production company 72' KBE feet Prudhoe Bay F~eld 3. Address 6. Property Designation Prudhoe Bay Oil Pool P. O. Box 196612, Anchorage, AK 99519-6612 ADL 28280 :~ 4. Location of well at surface 7. Unit or property Name 11. Type Bond(see 20AAC 25.025) · 2738' SNL, 1973' WEL, Sec. 12, TllN, R13E Prudhoe Bay Unit At top of productive interval 8. Well nurpber Number 4100' SNL, 1500' WEL, Sec, 12, TllN, R13E G-23 (34-12-11-13) K-00683449-G-14 At total depth 9. Approximate spud date Amount · 5018' SNL, 1181' WEL, Sec. 12, TllN, R13E December 22, 1986 $200,000.00 I 12. Distance to nearest 13. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) property line 10664' MD ADL 28304 1500 feet 35' feet 2560 8985' TVD feet i 16. To be comoleted for,deviated yells 17. Anticipated pressure (see 20 AAC 25.035 (eX2)) 8800 TVDSS : Kickoff depth#1 693(~eet 2161:~aximum hole angle o Maximum surface 3300 psig At total depth (TVD) 4390 psig 18. Casing pr6(~ra76 .... Setting Depth size Specifications Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 20" CondUctor 80 Surfac~ 110 110 9 cu. vds. concrete 17-1/2" 13-3/8" 72# L-80 Butt. 2049' Surface 2079 2079 17-1/2" 13-3/8" 72# S-95 Butt. 601' 2079' 2079 26S0 2680 3'123 cu. ft. Permafro 12-1/4" 9-5/8" 47# L-80 NSCC 4498 ' Surface 4498 4498 [2-1/4" 9-5/8" 47# L-80 Butt. 4173' 4498' 4498 8671 8477 575 cu. ft. Class G 8-1/2" 5-1/2" 17# L-80 TC4S 2243' 8421' 8352'10664' 8985' 835';cu. ft. Class G 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 20. Attachments Filing fee ~ Property plat I~ BOP Sketch [] Diverter Sketch E_] Drilling program Drilling flUid program ~ Time vs depth plot [] Refraction analysis Q Seabed report E] 20 AAC 25.050 requirements 21. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed (~.. C~. ~ Title Division Drillinq Enqineer , Commission Use Only iA~Pnl numt~9-21680 I [ See cover letter Permit Num~6~_ 192 Apprf f§t )86 for other requirements Conditions of approval Samples required ~ Yes I~, No Mud log required L-] Yes r2~No Hydrogen sulfide measures [] Yes [] No Directional.survey required ~Yes ~ No Required working,,c'rL~o~ure for BOP. F~J.;~; .j~ 3J~, I~ 5M; ~ 10M; [~! 15M Other: / /,.,,.-,)'~ /~//~//// ! ~./ ¢~ ~ by order of Approved by ~ -... Commissioner the commission Date . . PROPOSED DRILLING AND COMPLETION PROGRAM WELL G-23 (34-12-11-13) PBU High Angle Install and cement 80' of 20" conductor to surface. The drilling fluid program will consist of an 8.5-9.5 ppg spud mud in the 17-1/2" hole, a 9.0-9.7 ppg water base mud in the 12-1/4" hole and a 9.1 ppg water base mud in the 8-1/2" hole. Drill 17-1/2" hole to 2700' and cement 13-3/8" L-80/S-95 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 3300 psi based on a gas column to surface from 8600' TVDss and an oil column to 8800' TVDss. Directionally drill 12-1/4" hole to the 9-5/8" casing point above the Sadlerochit Sandstone. Run 9-5/8" 47# L-80 mixed string of Buttress and NSCC to within 5' of 12-1/4" TD and cement in two stages: First stage using Class G cement around the 9-5/8" shoe. The second stage to be downsqueezed in the 13-3/8" x 9-5/8" annulus followed by nonfreezing fluid. Directionally drill 8-1/2" hole maintaining an 85° hole angle from 9689' MD to TD. Log 8-1/2" hole with drillpipe conveyed logging tools. Run 5-1/2" liner from 250' inside 9-5/8" casing shoe to T.D. and cement using Class G cement. Rotate and reciprocate liner during cementing. Clean out to 5-1/2" float equipment. Test casing and lap to 3000 psi. Displace mud with NaC1 completion fluid. Run and retrieve perforating guns on drill pipe or tubing. Run 9-5/8" production packer on internal plastic coated tubing with gas lift mandrels and 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 through sliding sleeve. Set and test packer. Suspend well for perforating subsequent to rig release. Tubing Size: Tailpipe: 5-1/2" 17.0# L-80 A/B Mod, BUTT, IPC with 6 GLM's 5-1/2" 17.0# L-80 BUTT Note: Perforate with tubing conveyed guns. JWB/pm/0807D/6-26-86 PROPOSED ~OLE DIAGRAM WELL G-23 [ 34-12-11-13 ] PROPOSED DEPTH ' BKB 20" Conductor 110 Ball Valve 2072 13 3/8" Casing Shoe 17 1/2" Open Hole 2680 2700 PBU 1/2", 17~O'.#, b-80, A/B .Mod, BUTt IPC Tu6ing w/6 C4J~ ~9.~/~." Packer, .8.371 ~'TiebackAsse.mbly 8421 9:5/8" Casing ,Shoe 12 1/4" Hole ~" PBTD ~ Lzner -Shoe . 1/2" Open Hole 10624 10664 10664 JWB: 8-DEC-86 l , B.O.P. STACK CONFIGURATION 13-S/8 IN. TRIPLE RAM STACK SO00 PSI WP DRILLING ANNULAR PREVENTER I I P I PE RAMS ! 1 BLIND RAMS I ! 2 IN. KILL LINE GATE GATE DRILLING SPOOL PIPE RAMS 4 IN. CHOKE LINE I GATE GATE o2 I 12 I -1 .4¢ t~t l' ) ' : I LAT = 7~19'~,4Y' X= 658,~ o~ [ ~ole. I "= 400' o~1 . ~RTION OF T IIN.,R. 13~. I ' ~octice ~ ~vlying in ~e $~te of Alaska and that this repre.nfl o ,ocat, n .urvey ~ t~ .,,pad ~n o~ the .ell thereon. Thi~ ~urvey was ~de by me or under my .u~er~O~ and all dimen.ionl and oth..taill are c.r.t, e~tom '.. Iocatio~ ~ furni.hed ~ ~her~. ~te Surveyor VW.E. LOCoIId in Surveyed for AI.~ IN~. ADDED G-25 IHL(Prell~led) ADDED G-24 IHL (Prllel#) ADOED G-21 IHL (Pro,e#4) ADDED e-25 ALI. IOTTOM tyed I)y- F. M~ LINDSEY & LAND I HY~ORk,~NIC ro tlUD 1 - Brandt Dual Tandem Shale Shaker 1 - Demco 6-i2" Cone Shale Desander 1- Demco 416H w/16 cones & (1) Demco 48H w/16 cones (Desilter) 1 - Drilco Atmospheric Mud Degasser · i- 2~C)0 ~ O~::~ratfi. ng Capacity. Centrifuge 3.5 - ~.'randt ~A5 ~d ML× ~qLt. ators 1 - Recording drilling fluid pit level indicator with both visual and audio warning devices at driller's console O£~sc o Il ~ r~IFLO~ TO 7o with readout at. console CSLECK LIST FOR l~q4 WE~L PERMITS ITEM APPROVE DATE (2) 4. 5. 6. 7. 8. (4) Casg (14 thr~ 22)' (23 thru 28) (6) O'II-I~ /~,~.. (29 thru 31) (6) Add: Company YES the permit fee attached .......................................... Is well to be located in a defined pool ............................. Is well located proper distance from property line.............,..... Is well located proper distance from, other wells .... Is sufficient undedicated acreage available in this pool ............ Is well to be deviated and is wellbore plat included ................ Lease & Well No. NO Is operator the only affected party ................................. Can permit be approved before fifteen-day wait ...................... e 10. 11. 12. 13. Does operator have a bond in force .................................. ('"~,..-- Is a conservation order needed ...................................... Is administrative approval needed ................................... Is the lease number appropriate ..................................... Does the well have a unique name and number ......................... ~-' 14. 15 16 17 18 19 20. 21. 22. Is conductor string provided ............ : .......................... Will surface casing protect fresh water zones ...................... Is enough cement used to circulate on conductor and surface ........ Will cement tie in surface and intermediate or production strings .. Will ceraent 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 abandor~nent procedure included on 10-403 ........... Is adequate wellbore separation proposed ........................... 23. 24. 25. 26. 27. 28. For 29. 30. 31. Is a diverter system required ....................................... Is the drilling fluid program schematic ond list of equipment adequate Are necessary diagrams and descriptions of diverter and BOPE attached. Does BOPE have sufficient pressure rating - Test to ,6'OOC) 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 32. Additional requirements ............................................. Geology,: ~VA ~ Engine ~ering: LCS ~-':" ~W rev: 07/18/86 POOL INITIAL ~[ CEO. CI~S STATUS AREA UNIT NO. I IS.Po ON/OFF SHORE 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 roadability 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. V~R:FZC~'T:~N L:STiNS VO '310.H02 V'ERi~iCATiC;~ LiSTr>!3. ~4G~ i k¢,~ ;ILE HEADER ~;:;',-' :ILE NAME :EDIT .;ERVlC:._ NA'4E, : /ERSiON ~ )AT'E : fl~XiMUM LENGTH : 1024 :iLE TYP~ ~REVIOUS FILE : ~:~k iNFO'MAi'ION RECL:RO .OCi COD:. 3N : STaNDeR.'_., '~LA.SKA P~:ODUCTION CU. OOO OOO 030 06 4N : G-23 000 000 004 06,5 :N : PRUDHOE B~Y 000 000 0t2 06,:5 RANG: l 3 E 000 000 004 06 /O'SN: lIN 000 000 004 065 5~CT:~ 1~ 000 000 002 COUN: NORTH SLOOE 000 000 012 STAT: ALASKA OOO O00 nO6 MN~M CO~,~TE NT S ONi T TY ~E C~T E S I ZE COD V? OlO.M02 VE;RIF!C~Ti~Jh LiSTiN; P~G6 2 2 '.,! ~ ~ ELL = ',uN =CNS, D~TE L,SGS:~ : il ~m' T H~LST~AE ~S~NS : 9 ~25" SU:q.~AC:: - '~67i 'C=l~-:c~ .,~ : '].500" S'"~::FACE~ T~-= I~A~'.,_~ 'Ym~ FLUID : ~..~/CL-~'N/~R 5~'IN~2 ~it S!Z~ = 6.125" Sr~LUNSEF,.';$F.~,., - L.,,..,Gq'~ ... INCt_LtP. ED_ ',4~T~'"' .. Tn!q.~ ~,.,.,.a, GN;T!C_ TAPE. : SIZE i i .,".'AT ',tNE OM SPECIFICATION M SERVICE SE:qVi'~,~ i D ~.3 R '.2, E R }EPt 'q R .~ T ~NR~ "4 C N L -CNL CNL CNL CNL C ,,",,IL r.~ NL C NL L~NIT, .&Pl. ~IPl &Pl. LOS TY°= CLASS FT O0 OOC., OO GA~I O0 310 Oi OO ~ZO Ol 03 000 00 C ? 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