Alaska Logo
Department of Commerce, Community, and Economic Development
Alaska Oil and Gas Conservation
Commission
Loading...
HomeMy WebLinkAbout198-257 ALASKA OIL AND GAS CONSERVA~ION CO~SSION TONY KNOWLES, GOVERNOR 333 W. 7'~ AVENUE, SUITE 100 ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Fritz Gunkel, Manager Drilling BP Exploration (Alaska) Inc. PO Box 196612 Anchorage AK 99519 Re: Cancelled or Expired PTD's. Dear Gunkel' September 6, 2001 The Alaska Oil and Gas Conservation Commission ("AOGCC") approved the following referenced permit to drills. The AOGCC has a long-standing policy of releasing cancelled or expired permits two years from the date the application was approved by the AOGCC. The following files are scheduled to be released October 1,2001. Permit to Drill No.'s: 97-047 98-019 99-002 97-056 98-050 99-009 97-082 98-135 97-090 98-154 97-100 98-155 97-121 98-164 97-159 98-167 97-191 98-177 98-210 98-211 98-223 98-236 98-257 98-261 Sincerely, Memorandum State of Alaska Oil and Gas Conservation Commission To: Well File 198-257 DATE January 8, 2001 Re: Expired Permit Action WELL: Prudhoe Bay Unit S-23AXX APl # 50-029-22088-95 Permit Issued: 01/08/1999 This memo will remain at the front of the subject well file. Our adopted conventions for assigning APl numbers, permit numbers and well names did not specifically address expired or cancelled permits. This omission h as caused some inconsistencies in the treatment of these kinds of applications for permit to drill. Operators have asked us to adopt formal procedures for this class of permit application in order to prevent future database disparities. If a permit expires or is cancelled by an operator, the permit number of the subject permit will remain unchanged. The APl number and in some instances the well name reflect the number of preexisting redrills and or multilaterals in a well. In order to prevent confusing a cancelled or expired permit with an active Well or multilateral these case sensitive well identifiers will be changed for expired and cancelled applications for permits to drill. The APl number for this cancelled or expired permit is modified so the eleven and twelfth digits is -95. The well number for a cancelled or expired permit is modified with an appended XX. EXPIRED PERMITS ARE RELEASABLE 2 years from the date on the application was issued by the commission, unless the operator ask for extended confidentiality. AOGCC database has been changed to reflect these changes to this permit. Stero McMains Statistical Technician TONY KNOWLE$, GOVEFINOFI ALAS~ OIL AND GAS CONSERVATION COMMISSION 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 January 7, 1999 Dan Stone Engineering Supervisor BP Exploration (Alaska) Inc. P O Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Unit S-23A BP Exploration (Alaska) Inc. Permit No: 98-257 Sur Loc: 1631'SNL, 4336'WEL, Sec. 35, T12N, R12E, UM Btmhole Loc. 1464'SNL, 896'EWL, Sec. 26, T12N, R12E, UM Dear Mr. Stone: Enclosed is the approved application for permit to redrill the above referenced well. The permit to redrill does not exempt you from obtaining additional permits required by law from other governmental agencies, and does not authorize conducting drilling operations until all other required permitting determinations are made. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25 035. Sufficient notice (approximately 24 hours) must be given to allow a representative of the Commission to witness a test of BOPE installed prior to drilling new hole. Notice ma3' be given by contacting the Commission petroleum field inspector on the North Slope pager at 659-3607. · Robert N. Christenson, P. E. Chairman BY ORDER OF THE COMMISSION dlf/Enclosures CC: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. ALASK,[, .~IL AND GAS CONSERVATION C viMISSION PERMIT TO DRILL 20 AAC 25.005 la. Type of work [] Drill [] Redrill Ilb. Type of well [] Exploratory [] Stratigraphic Test [] Development Oil [] Re-Entry [] DeepenI [] Service [] Development Gas [] Single Zone [] Multiple Zone 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exploration (Alaska) Inc. Plan RKB = 63.58 Prudhoe Bay Field / Prudhoe 3. Address 6. Property Designation Bay Pool P.O. Box 196612, Anchorage, Alaska 99519-6612 ADL 028257 4. Location of well at surface 7. Unit or Property Name 11. Type Bond (See 20 AAC 25.025) 1631' SNL, 4336' WEL, SEC. 35, T12N, R12E, UM Prudhoe Bay Unit At top of productive interval 8. Well Number Number 2S100302630-277 3820' SNL, 5010' EWL, SEC. 27, T12N, R12E, UM S-23A At total depth 9. Approximate spud date Amount $200,000.00 1464' SNL, 896' EWL, SEC. 26, T12N, R12E, UM 01/07/98 12. Distance to nearest property line113. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) ADL 028258, 896'I . No Close Approach 2560 12403' MD / 8823' TVD 16. To be completed for deviated wells 17. Anticipated pressure {see 20 AAC 25.035 (e) (2)} Kick Off Depth 3900' MD Maximum Hole Angle 102° i Maximum surface 2325 psig, At total depth (TVD) 8750' / 3200 psig 18. Casing Program Setting Depth Size Specifications Top Bottom ..... Quantity. of C.e...ment .... ................ , .............. Hole Casing Weighi ......... Grade Coupling Length MD TVD MD TVD (include stage data) 8-1/2" 7" 26# L-80 BTC-M 5937' 3750' 3720' 9687' 8744' 546 sx Class 'G' 6" 4-1/2" 12.6# L-80 IBT-M 2866' 9537' 8620' 12403' 8823' unCemented Slotted Liner 19. To be comPleted for Redrill, Re-entry, and Deepen operations. Present well condition summary Total depth: measured 11634 feet Plugs (measured) true vertical 9224 feet Effective depth: measured 11583 feet Junk(measured) true vertical 9189 feet Casing Length Size Cemented M D TVD Structural Conductor 110' 20" 139' '139' Surface 2673' 13-3/8" 2255 cu ft Arcticset III & II 2702' 2667' Intermediate 10899' 9-5/8" 1515 cuft Class 'G' 10928' 8697' Production Liner 942' 7" 266 cuft Class 'G' 10692' - 11624' 8526' ~ 9183' Perforation depth: measured 11165' - 11408' (five intervals) true vertical subsea 8832' - 9003' '~'01'~iiachments [] Filing Fee [] Property Plat [] BOP Sketch [] giVerter [] Drilling Fluid Program [] Time vs Depth Plot [] Refraction Analysis [] Seabed Report [] 207'~i,:.¢~;~;Q~50 Requirements ............................... Contact Engineer Name/Number: C. Michael Jackson, 564-5480 Prepared By Name/Number: Terrie Hubble, 564-4628 21. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed ~-__.'"¢-n., ~ Dan Stone Title Engineering Supervisor Date Commission Use Only "Permit Number APl Number' [ ApprovaI. LDate.../., I See cover lett,r ?~-- 2_~" ~ 50-029-22088-0! .. //-. ~ - ~'~/ for other requirements Conditions of Approval: Samples Required I-'lYes ~No Mud Log Required []Yes I~l No Hydrogen Sulfide Measures ~Yes [] No Directional Survey Required [2qYes [] No Required Working Pressure for BOPE []2K; 1--13K; [] 4K; J~ 5K; [] 10K; [] 15K Other: ORIGINAL SIGNED BY by order of ...Approved By Robert N. C;hr. isten$0" Commissioner the commission Date/~ S"-..~'~' Form 10-401 Rev. 12-01-85 Submit In Triplicate I Well Name: IS-23A Sidetrack Plan Summary I Type of Redrill (producer or injector): Producer(Sag River) Surface Location: 1631' FNL, 943' FWL, S35 T12N R12E Umiat Target Location: 3820' FNL, 5010' FWL, S27 T12N R12E Umiat Bottom Hole Location: 1464' FNL, 896' FWL, S26 T12N R12E Umiat I AFE Number: 14P1204 I I Estimated Start Date: 101/07/98 I MD: 112,403' I I TVD: 18823' I I Rig: I Nabors 7ES I Operating days to complete: 130 I BE/USE= 135,73'1 IRKS= 163.58' I Well Design (conventional, slimhole, etc.): I Horizontal Sidetrack I Obiective: I Offset producer for Sag River pattern injection established by S-31Ai. Mud Program: Intermediate ~ud Properties: LSND 8.5" hole section I Density (ppg) Funnel vis Yield Point 10 sec gel 10 min gel pH Fluid Loss 10.5-11.0 45-50 12-15 4-8 8-12 9-10 6-9 Production Mud Properties: Quickdril-n 16" hole section Density (ppg) Funnel vis LSRV LSR YP pH 8.6 - 8.8 45-65 >45,000 cP 10-20 8.5-9.0 Directional: KOP: I 3900' MD Maximum Hole Angle: Close Approach Well: 102° @ 10,057'(8815' TVD) None Logging Program: Intermediate Production Hole(Horizontal) Drilling: MWD / GR Open Hole: None Drilling: MWD / GR / Resistivity Open Hole: Platform Express + Sonic S-24Ai Permit to Drill Formation Markers: Formation Tops MD TVDss Comments Base Permafrost 1875' SV3 / T5 2750' SV1 / T3 3150' UG4 / K15-C1 3900' 3515' Kick Off Point in 9-5/8" UG1 / UgS 4300' Hydrocarbon bearing WS1 / West Sak 4990' CM3 / K12 5180' HRZ 6500' Kuparuk 6600' Hydrocarbon bearing LCU 6650' Miluveach 6785' Top Kin~lak(H) 7540' TJG 7540' TJF 7720' THE 7940 TJD 8100' TJC 8400' TJB 8450' TJA 8525' Sag River 8630' Target sands. Estimated at 3200 psi(7.13 EMW) Shublik 8677' Zone 4 8777' Zone 3 8960' Not Penetrated Zone 2 9010' Not Penetrated HOT 9001' Not Penetrated OOWC 9020' Not Penetrated Casin¢ i/'l'ubinq Proqram: Hole Csg! Wt/Ft Grade Conn Length Top Btm Size Tbg O.D. MD/TVD MD/I'VD 8.5" 7" 26# L-80 BTC-M 5937' 3750'/3720' 9687'/8744' 6" 4 1/2" 12.6# L-80 IBT-M 2866' 9537'/8620' 12,403'/8823' Tubincj 4 1/2" 12.6# L-80 IBT-M 9537' 0/0 9537'/8620' Cement Calculations: Kickoff Plug I Cased / Open hole I Basis: Based on 200' of 9-5/8" casing volume above the section, 50' of 12-1/4" milled section and 100' of 9-5/8" casing below the section. TOC: At -3700' md(3580' TVD, 3513' TVDss) Total Cement Volume: I Tail 132 bbl/180 ftc/181 sks of Halliburton Premium 'G' at I 1 17 ppg and 0.99 cf/sk. Liner Size 17" Intermediate I Basis: Lead: Based on 4787' open hole above tail with 100% excess and 150' liner lap. Lead TOC: At top of liner -3750' md(3720' TVD, 3656' TVDss). Tail: Based on 80' shoe track and 1000' of open hole with 30% excess. Tail TOC: At 8687' md(7904' TVD, 7840' TVDss). S-24Ai Permit to Drill Total Cement Volume: Lead 220 bbl/ 1235 ft~ / 381 sk of Halliburton Premium 'G' at 11.0 ppg and 3.24 cf/sk. Tail 34 bbl/190 ft~ / 165 sk of Halliburton Premium 'G' at 15.8 ppcj and 1.15 cf/sk. Liner Size 14 1/2" Production I Basis: Tail: None. The production liner is planned as slotted over the entire length. A 'Bonzai' or combination solid/slotted production liner will be the contingency dependent on faults or losses. Total Cement Volume: I Tail I None- slotted liner. Well Control: Well control equipment consisting of 5000 psi working pressure pipe rams(2), blind/shear rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Diverter, BOPE and drilling fluid system schematics on file with the AOGCC. · Maximum anticipated BHP' 3200 psi @ 8750' TVDss - Zone 4 · Maximum surface pressure: 2325 psi @ surface (based on BHP and a full column of gas from TD @ 0.10 psi/ft) · Planned completion fluid: 8.5 ppg Seawater / 6.8 ppg Diesel Drilling Hazards/Contingencies · None DRILLING CLOSE APPROACH: INTERMEDIATE SECTION: · The Kingak shale is considered mechanically unstable over 50° inclination. The 5787' intermediate section will be drilled at inclinations up to 32° with mud asphalt products added for reduced shale reactivity. · Gas cut mud has been observed in the Ugnu(3800' TVDss) and Kuparuk(6500' TVDss) which will be controlled with appropriate mud weights. In addition, tight hole conditions have been encountered in the Kingak shales at 7400' TVDss. Mud weights as high as 11.0 ppg and the addition of shale stabilizers may be required. · The kick tolerance for the 8.5" open hole section would be 38 bbls assuming an influx at 9687' TD. This is a worst case scenario based on a 9.0 ppg pore pressure gradient and a fracture gradient of 11.0 ppg with a 11.0 ppg mud in the hole. PRODUCTION SECTION: S-24Ai Permit to Drill · Stuck pipe has not been recorded in the production interval but differential sticking will be a problem if loss circulation is occurring. · The kick tolerance for the 7" shoe would be an infinite influx(annular volume) assuming an influx at the 12,403' TD. This is a worst case scenario based on a 7.2 ppg pore pressure and a minimum fracture gradient of 10.0 ppg with a 8.5 ppg mud in the hole. Disposal No annular injection in this well. Cuttings Handling: Cuttings should be hauled to the ball mill at CC-2A. Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to CC-2A for injection. Haul all Class I wastes to Pad 3 for disposal. In addition, haul all cuttings from drilling operations to CC-2A for disposal, except any metal cuttings which will be sent to the North Slope Borough. SUMMARY SIDETRACK PROCEDURES Pre-Riq Work: , Perform a cement P&A of 15.8 ppg class 'G' cement with adequate cement volume to cover the 7" liner from PBTD at 11,582' to a minimum of 100' above the top perforation at 11,165' plus squeeze 5 bbls to the perforations. Estimated cement volume needed is 25 barrels. A full bore P&A is recommended but is at the discretion of the Wells Group. There are no GLM's in the completion string. Note: Top of cement must be at a minimum of 9734' for AOGCC compliance. Top of cement may extend into the tubing as long as it does not interfere with the tubing cutting operations. 2. Rig up slickline, tag and document top of cement. 3. Cut the 4 1/2,' L-80 tubing in the middle of a full joint of tubing at 4600'. This cut will not be fished and is at the discretion of the Wells Group as to chemical or jet cut. The 4-1/2" tubing is internally plastic coated TDS, 4. Test the FMC 9-5/8" mandrel packoff and tubing hanger seals to 5000 psi for 30 minutes. 5. Test the casing against the cement plug to 3000 psi for 30 minutes. Freeze protect top 2200' MD with diesel. Ensure the cut is successful and communication exists between casing/tubing to avoid tubing collapse. 6. Bleed tubing and annuli pressures to zero. Set a BPV in the tubing hanger and test from below to 1000 psi. Secure well. 7. Remove the well house and flowlines. If necessary, level the pad. Please provide total well preparation cost on the handover form. Riq Operations: 1. MIRU Nabors7ES 2. Circulate out freeze protection. Set TWC. 3. Nipple down tree. Nipple up and test BOPE. 4. Pull 4-1/2" tubing. 5. Make up an 8.5" bridge plug on drill pipe and set at 4200'. 6. Weight test the bridge plug and pressure test the casing to 3000 psi for 30 minutes. S-24Ai Permit to Drill 7. Displace the well to milling fluid and spot a 18 ppg pill from the bridge plug to the milled section. 8. RIH with 9-5/8" Baker section mill assembly and mill a 50' window from 3900' to 3950'. 9. RIH with a mule shoe to 100' below the base of the section and spot a 17 ppg balanced cement plug from 100' below the section to 200' above the section. 10. Kick-off drilling the 8-1/2" intermediate section to TSag @ _+9687' md(8744' TVD). 11. Run and cement a 7", 26# intermediate liner with a minimum of 150' liner lap in the 9-5/8". 12. Test the 7" and the 9-5/8" casing from the 7" landing collar to surface to 3000 psi for 30 minutes. 13. Drill the 6" production section building 34°/100' to horizontal targeting the Sag River sands(8744' TVD) to an estimated depth of 12,403' md(8823' TVD). 14. Run a 4-1/2", 12.6# slotted production liner throughout the 6" wellbore. A Bonzai(solid/cemented and slotted) liner will be a contingency dependent on the amount of drilled 15. 16. 17. 18. 19. 20. 21. 22. Run a USIT / CBT on e-line as deep as possible logging the 4.5" and 7" cement bond for 1000' above the top of the 4.5" liner. Test the 4-1/2", 7" and 9-5/8" casing from the 4-1/2" landing collar to surface to 4000 psi for 30 minutes. The 4-1/2" production liner will be perforated with DPC 2.75" guns on a 400 psi under balance. Perforating intervals to be determined after reviewing logs. Run 4-1/2" NSCT L-80 completion tying into the 4-1/2" liner. Test the tubing to 3500 psi and annulus to 3500 psi for 30 minutes with 2000 psi on the tubing. Nipple down the BOPE. Nipple up and test the tree to 5000 psi. Freeze protect the well to ~2200' and secure the well. Rig down and move off. Estimated Pre-rig Start Date: 12/24/98 Estimated Spud Date: 01/07/98 C. Michael Jackson 564-5486 12/15/98 S-24Ai Permit to Drill Shared Services Drilling Well: S.23A Wp2 ] DrillQuest' -1600 -800 0 800 1600 2400 3200 PropoBa~ Data for ~-23A Wp2 V'or~clJ O~tn:" W~l ............. ~h~,~:' ~'~ " V~ ~ O~ Well ~.j~ V~~: 0,~ N,0.~ E ~ 4S21~t 2~ 305,918 ~503~ 314.81 N 192~W 31ZI3 ~ . o ~ ~ 4361~1 ~.~ ~0f918 ~262~ ~80.91 ~ 28).8J W 37~,~ 0.~ ~ ~ ~ 9M4'93 84,~ 14.~ 8830.77 32~.03 N 121037 W ~208,03 34,~ ~'~ 7olM Dep~; ~ ~403.37fl MD, ~a,~lt ~ ~ ~ ~959',10 ~OiO ~7.4~ 883036 3325.~ ~ IIU,18 W 3~08,47 ~ /~ ~6,~1 96,0J0 17.472 8830,~ ~332,~ ~ ll80,~W 331f41 ~ / ~ . 10~41.29 ~02,2~R ~,61B Flail6 3690J0 N ~0,12 W 3674,92 0,~ ~ - 'DIr *~761 89fl MD ~ 2Blt-- ~ ~,u~ / I)~61,g9 88365 36,816 880128 4933,22 N d38.67 W 492630 ~ ...... ~ / / ~ ~-~T~ 17~,42 ~.~ ~.~N, ~IBO,~W 59~I67,a2N, e17873.tBE ~ / ~ / / 8.2~ T~ 6670,~ a7~,~ aeaa,19 N, l~,g~ W 69~7~4.13 N, elate,42 E ~ / ~ / / ~23AT4~ G-2~T4N a73S,~ ethane 4021.36N, ~tS,tOW 6~eeT,SeN.~laSt4.~3E ~ / ~ / ~gl,~l~O ~T~ aT~00 ~23.6B ~4e,SSN ~.42W 6~a~OON, 81eOOS,00E ~ / .... / / SURFACE LOCATION PLOT DATE: 15-DE~98 ,.,.,~,,~ ,-~,, .n,,h~._.,,....,~. ONLY _ ~~ KOP:SI~DIr Q,~*i~: ~,~ MD, 4.~ ~ I I I I '1 I -" SURFACE ~OCATION PLoT DATE: 15-DEC-98 Haam~lC~ma:l~'~l#: ~7085~.0~N 61910Q,OOE 0~: 3~oe fi ~(CBG) -- o~le Gymm ~ ~O~ ~lki Stab PIi~I ~ 4, US F~ ~m~ By; ,. 3200 2400 160C 80O -1600 -800 0 800 1600 2400 3200 Scale: linch = 800ft Eastings Reference is True Nor Shared Services Drilling Well: $-23A Wp2 I DrillQuest" KOP $ 81t,~ Pit e e,ffio'/lool[: 3f)oo 0OIL MD, $0H.H(L WD DJ': 4 I~1,O Iii }dO, 4e~ ~l[ 1'VD End :)ir. 47a~L24fl hiD, 4 (,~,~fl TVD Vanical O~igin; wen Hodzonbl Origiq;Wail MaaSuromenl Unlls: tt NC:~l.h Rataranc~: True Norlll Proposal Dam for S-23A Wp2 Dogleg sevarily: Degrees per lOOfl VallJcaJ Se~on Az/llxl~: 0.7gn' VarticOl SOClI~ Desctlptlon: Wall Votiioel Sacuon Odgln: 0,00 N,O,O0 E Measured lncl, Azim, Vortical NOttrtl~JS Eas~Ing; VcrfitalDegleg Deflfll Depth $¢cUon Rata 3000.o0 2~.I~1 33.~,80~~,854.04 235.45 N 4121.~1 28.0ffi~05,918 4050.38 ~14.81 N ~61.~1 2~.~ 30~,~1~ 426Z29 380.91 N 4735.24 32,9J0 342.03~ 45~6.9~ 530,23 N P687,59 32.910 342.054 ~744.58 3080.74 N 9854,9~ ~,~ Il.ltD 8830,~7 3225,03 N ~05~.lO g6~10 17.4~ 8830,76 3325.09 N ~6,~8 96.010 17.472 85~0,ffi lll2.~ N 1~57,21 1~.202 13.618 8815,63 3418.14N 10~43.2~1~.2~ 13,6t8 8755.16 )6g0.10N 1{~6.75 90.~ 13,9~ 87~3.58 3886.1~ N 10~.93 8i98~ 31,931 K744.40 41~.15 N 11~26.1585.~8~ ~1.9~1 ~7~8.5~ 4~21,3~ N 11761,8988.3~5 36.R 16 8805,28 403~,22 N 1~03,37 88.365 3~.S16 8823,58 544~.55 N 126.27 %' 233.6R 192.56 W ,112, Z36.000 283,81 W 376,96 0,000 3~7.06 w 524,85 5,~ 1217.(M W 3072.66 0,0~) 1210~7 w 3208.03 11~2.18 W 330~,47 12.~B 11$I~ W 340g,08 10~0,12 W 3674.72 104 I,~3 W3~7 t.4~6.~ 515,1~ W 4813.~ 0,0~ 4~.67 W 4~26fl0 54.42 W 5445,20 O.OCX) .,, PROPOSAL TARGET SUMMARY 8681,~ BT44.SR 8089#4 N, 1217.04 W ~82~25,00 N, GI7R40.O0 E 8768,42 ~0,00~,~N, tla0.0OW 59~3167.~2Nr 81787~,18 E a610.~07~.S0 ~86,19N~ 1041.03W St)H3724.13 N, 610~2.~2 E BTaG.~G760.06 4021.36 N~ 515,19 w 5084~57.5G N, G19G14.23 E ~T60~0~,~;r~o.~u a~ ~4,42 WG085300,00 N, 6180G~,00; SURFACE LOCATION PLOT DATE: 15-DEC-98 Hor}zonLa) Ooord~naloa = 5D79855.o0 N, Gl g I ~.Oa 65 fl Rf ( ~ ~3.~a fl RKO · Court. La Sy~la~: fl~27 ~aa~l StaLe Planes, ~)~i 4, US FOOL Oh0¢kccl RV; ,~lxOved Dy,. ONLY 72 I '1 400 1200 2000 Scale: linch = 800fi 7' ¢o~ln~ E//$§.O0 I 2800 3600 4400 5200 Vertical Section section Azimuth: 0,790° (Tru, Prudhoe Bay Unit Measured Sub-Sea Vertical Depth Incl. Az~m, Depth Depth (fi) (ft) ([t) 3g00.O0 29.191 3,33.805 3791.36 3654-94 ~.01) 27,~18 321.510 3879,26. 3942-~ 4100,00 27.868 308.670 3987.71 4031,29 4121.61 28.000 305.918 3986.80 4050.38 4200.00 28.000 305.918 4056°02 4.[19.60 4300.00 28.000 305.918 4'[44.3'[ 4207.89 436"~.61 26-000 305.918 4f96-71 4262.29 4400.00 28.021 310,086 4232.61 4296.19 4500.00 28.636 320_474- 4320.69 438427 4600.00 30.013 330.3CO 4407.92 4471.50 4.700.00 32.055 339.164 4493,r~5 4557,23 4-735.24 32.910 342.034 4523.38 4586-96 4800.CO 3~-910 342.034 4,577.75 4641.33 4~00.00 32.910 342.034 4661.70 4725.28 5900.06 32.910 342.034 4745.65 4609.23 510B.00 32.910 342J334 4629.60 4893.18 52~.00 32.910 342.034 4913.56 4977.14 5300.00 32.910 342.034 4997.51 506 !.09 5400.00 32.9f0 342.034 5081.46 5145.04 5500.00 32.9f0 342.034 5f65.4.[ 5228.99 5600.00 32.910 342.(Y:"J~ 5249.37 5312.95 5700.00 32.910 342.034 5333.32 5396.90 5800.00 32.910 342.034 5417.27 .5480.85 5900.00 32.910 3 _~,034 5501.22 5564.80 6000.~3 32.910 342.034 5585.18 5648.76 6100,C~3 32.910 342.034 5569.13 5732.7'[ 6200.00 32.910 342.034 5753.0~ 5818.66 6300.03 32.910 3,42.034 5637.03 5900.6'[ 6400.00 32.910 342.034 5920.99 5984.57 6500.00 32.910 342-034 6004.94 6068.52 Sperry-Sun Drilling Services Proposal Report for S-23A Wp2 Local Coordinates Nodhings Easlings (ft) (ft) Global Coordinates Northings East/rigs (ft) (ft) Alaska State Plane Zone 4 FOP, PLAXttlNG PURPOSES S~Eon Comm 235.45 N 126.27 W 5980088.4T N 618976.D0 E 275.71 N 151.65 W 5960128.26 N 618949.99 E 308.68 N ~[84,51 W 5980160.71 N 616916.61 E 314.61 N .[92.56 W 5980'[86.71 N 611~08.46 E 336.40 Iq 222_36 W 5980.[87.82 N 616878.32 E 363.94 N 260.38 W 5980214~75 N b"18839.87 E $80.9I N 283.81 W 5980231.35 N b-'Z8816.18 E 3cJ1.~9 N 298.01 W 5980242.2.9 N 618801.79 E 425.60 N 331.28 W 5980275.26 N 618768.00 E 465.83 ~1 358.94- W 5980315.07 N 616739.70 E 512~-'3~ N 380.78 W 59603b'1.2.7 N 618717.12 E 530.23 N 387.01~W 5980379.01 N 618710.56 E 563.70 N 397.91 W 5980412.31 N 616699.18 E 615.39 N 414.67 W 5980463.72 Iq 618681.60 E 557.07 I~ 431.43 W 5980515.13 N 618664.02 E 718.75 N 4.48.19 W 5980566.53 N 6.[6645.44 E 770.43 N 464.95 W 5980617,94 N 6.[8628.86 E 822.I2 N 481.71 W 5980669,35 N 618611 ~.B E 873.80 N 498.47 W 5980720.76 N 618593,70 E 925.48 N 515.23 W 5980772.17 N 618576.12 E 977.16 N 53.[.99 W 5980823.58 N 618558.55 E 1028.85 N 548.75 W 5980874.99 N 618540.97 E 1080~53 N 565.51 W 5980926.40 N 618523.39 E 1132,21 N 58225 W 5980977.81 N 616505.8t E 1183.89 N 599.0Z W 5981029.22 N 618488.23 E 1235.58 N 615.78 W 5981080.63 N 618470.65 E 126726 N 632.54 W 5981132.04 N 618453.07 E 1338.94 N o 649.30 W 5981183.45 N 6f8435.50 E 1390.83 N 666.06 W 5981234.86 I'~ 618417.92 E 1442.31 N 682.82 W 5981286..27 N 618400.,34 E 233.68 6.00D 273,59 6.000 306.11 6J)O0 312.13 0.O00 333.30 0.000 360~ 0.000 378.98 5.000 5.O00 420..~.:J 5.000 460.84. 5,000 607.09 5.000 524,85 0.000 556.16 0.000 609.61 0.000 681.08 0,000 712.50 O,OOO 763.95 0.000 815.40 0.000 866.8,~ 0,000 918,29 0.000 969,74 0.000 1021.16 9.000 1072.63 0.000 1124.0B 0.000 1175.52 0.000 1226.97 0.000 1278.42 0.00,9 1 329.86 0.000 138'1.31 0.000 *[432.76 KOP: Stari Dir @ 6.000'1100ff: 3900.00R MD, 3854.9411'rvd End Dir: 4121.61ff MD, 4050.38ft 'FVD Stall Dir @ 5.000"I100~t: 4361.61fl MD, 4262.2911 't-VD End Dir: 4735.24ff MD, 4586.96ff 'I-VD Con~'nued... December, 19~6- 15:33 - 1 - Dr/I/Quest Prudhoe Bay Unit Measured Sub-Sea Vertical Depth Incl. Azim. Depth Depth (it) 0t) 66013.00 37-9T0 342.0~..4 6088-89 6152.47 67'00.00 32.910 342.034 6172.84 6236.42 6B00.0D 37_910 342.034 6256-80 6320.35 6gOO.B0 37_.910 342.034 6340.75 6404.33 700D.gO 37-910 342.034 6424.70 6488.28 7100.00 32.910 342.034 6500.65 6572-23 7200.00 32.910 342.034 6592.61 6656.19 7211.42 32.910 342.034 6602,19 6665.77 7244.54- 32.810 342.034 6630.00 6693.58 7300.00 32.810 342.034 6676.56 6740.14 7400.00 32.910 342.034 6760.51 6S24.09 7500.00 32.910 342.034 6844.46 6998.04 7600.00 32.910 342.034 6928.42 6~97_00 7700.00 32.910 342.034 7012.37 7075.95 7800.00 32.910 342.034 70~8.32 7159.90 7800.00 32.910 342.034 7'~80.27 7243.85 8000.00 ,.-32.910 34-2.034 7264.23 7327.81 8100.01) 32.910 342.0'34 7348.18 7411.76 8133.14 32.910 342.(Y.~ 7376.00 7439.58 8200.00 32.910 342.034 7432.13 7495.71 6300.00 32.910 342.034 7516.08 7579.66 8400.00 32.910 342.034 7600.04 7663.62 6500.00 32.910 342.034 7683.99 7747.57 8600.00 32.910 34?-034 7767.94 7831.52 8700.00 32.910 342.034 7851.89 7915.47 8800.00 32.910 342.034 7935.85 7999.43 8900.00 32.910 342.034 8019-50 8083.38 S000.00 32.910 342.034 8103.75 8167.33 9100.00 32.910 342.034 8187.71 8251.29 9200.00 32.910 342.O34 8271.66 6335,24 Sperry-Sun Drilling Services Proposal Report for S-23A Wp2 Local Coordinates Northings Easfings (ft) (It} Global Coordinates Dogleg Vertical Northings Easlings Rate Se~tlon (fi) (it) (°/~0~) (it) puRpos~s~ State Plane Zone4 1493,89 N 899.55 W 1545.67 N 718.34 W 1597.36 N 733.10 W 1648.04 N 749.86 W 1700.72 N 766.62 W 1752.40 N 783.38 W 1804-.09 N 800.I3 W ~808.89 N 802.05 W ~827.11 N 807.80 W 1855.77 N 816.89 W 1907.45 N 833-85 W 1959.13 N 850.41 W 2010.52 N 867.17 W 208250 N 883.93 W 2114.18 N 900.69 W 2165.87 N 9f 7.45 W 2217,55 N 934.21 W 2269.23 N 950.S7 W 2286.36 iq 956-52 W 2320~91 N 967.73 W 2372.60 N 984.49 W 2424.28 Iq f 001.25 W 2475.96 N I018.00 W 2527.64. N 1034.76 W 2579.33 N I051.52 W 263t.01 N 1068.28 W 2682.69 N 1085-04 W 2734.37 N 1101.80 W o 2788.06 N 1118.55 W 2837.74 N 1135.32 W 5981337.68 N 618382.76 E 0.000 1484.20 5981389.09 N 618365.18 E 0.000 1535.65 5981440.50 N 618347.60 E 0.000 1587.10 5981491.91 N 618330.02 E 0.000 1638.54 598154332 N 6183t2.44 E 0.009 1689.99 5981594-7:3 N 618294.87 E 0.00O t74-1.44 5981F;~tG.14 N 615277.29 E 0.0~0 1792.88 5981652.01 N 618E75.2.8 E 0.000 1798.76 5981669-04 N 618269.46 E 0.000 T815.80 5961697.55 N 618259.7! E 0.00O 1844.33 5981740.9§ N 618247_.13 E 0.000 1695.78 5981800.37 N 618224.55 E 0.000 1947.22 5981851.78 N 618205.97 E 0.000 1990.67 5~381903.19 N 818189,39 E O.OOO 2050.12 5981~54.60 N 618171.81 E O.OOO 210~.56 5982005.0i N 618154.24 E 0.000 2153.01 5982057.42 N 618136.66 E O.OOO 2204.46 5982108.83 N 618119.08 E 0,0'00 22:55.90 5982125.86 N 61811325 E 0.0{30 2272.95 5~82160.24 N 816101.50 E 0.000 2307.35 5982211.65 N 618083.92 E 0.000 2358.80 5982263.06 N 618066.34 E 0.000 2410.24 5982314.46 N 618048.76 E 0.980 2461.69 5982385.87 N 618031.18 E 0.000 2513.14 5982417.26 N 618013.61 E D.000 2564.55 5982468.69 N 61799G.03 E 0.000 2616.03 5902520.10 N 617978.45 E 0.000 2667.48 5982571 ~51 N 617980-87 E 0.000 2718.92 5902622.92 N 617943.29 E 0.000 2770.37 5982674.33 N 617925.7I E 0.000 2821.82 SaW ~' 37-910° Inclination on 342.034" AzJ'muth LCU KINGAK Continued... 15 Decer~ber, 19E8 - t5:33 - 2- DrJllQuest Prudhoe Bay Unit Measured Depth Incl. (it) Az{m. Deplh (it) Vertical Local Coordinates Depth Norlhings Fastings (it) (ft) 9300.00 32.910 342.034 8355.6~[ 8419.19 940{3.00 32.910 342.034 8439.56 8503.14 9500.00 32.910 342.034 8523.52 8587.10 9600.00 32.910 342.034 8607.47 8671.05 9687.59 32.910 342.034 8681.00 1~'44.58 9700.00 36.278 346.,517 8591.22: 8754.80 9750.99 51--278 359.252: 8728.00 8791 9800.00 66.539 7.116 8759.28 8816.84 9654.93 84.000 14.O30 8767.19 8830.77 9900.00 89.196 15.503 8769.67 8833.45 9959.10 96.010 17.472 ~767.18 8830.76 9966~36 96.010 17.472 8765,42 8830.00 10g0O,OI) 98.308 '[6.(]61 8762.2;3 8825.8;I 1095721 102.202 '[3.618 875:2.05 8815.63 10100.00 102.202 t3.618 8743.00 8806.58 102(30.00 102.202 I3.618 8721,87 8785.45 I0300.00 102.202 13.618 8700.73 8764.31 10343.29 102.202 13.618 8691.58 8755.16 10400.00 98.601 13.724 8681.25 8744.83 10500.00 92.804 13.906 8671.14 8734.72 ~0546.75 99.§00 13.990 8670,00 8733.58 10600~00 89.290 17.~05 8670,33 8733.91 10700.00 67.964 22.958 8672.73 8736.3'[ 10800.00 86.659 26.621 8677.42 8741-00 10852-93 85.982 31.93~ 8680.82 8744.40 Sperry-Sun Drilling Servicesn_ 0~LY PBU~OA S Pad Global Coordinat~ Degl~ Vertical N~hings Eastings RMe Se~fon Comment 2889.42: N 1152-08 W 5982725.74 N 617908.13 E O.00O 2873.26 2941.11 N 1168.84 W 5962777'.15 N 617690.55 E 0.000 2924.71 2992.79 N 1185.60 W 598262~ N 617572.98 E 0.0D0 2976.~6 3(]44.47 N 1202.36 W 5982879~fl7 N 617855.40 E 0.0DO 3027.60 308~J.74 N 1217.04 W 5962925,00 N 617640.00 E 0.DOD 3072.66 3096.52 N 12~8.93 W 5982931.75 N 617638.00 E 34.000 3079.42 313;1.35 N 1222.74- W 5982966.51 N 617833.64 E 34.090 3114.19 3173.06 N 12.20.19 W 5963008-26 N 617835.53 E 34.000 3155.94 3225.03 N 1210.37 W 598,3060.38 N 617844.51 E 34.000 3208.03 3268.52 N 1198.92 W 5983104.05 N 617855~7 E 12.000 3251-88 3325.09 N 1182.18 W 5903160.88 N 617871.11 E 12.O00 3308.47 3332.(30 N 1180.00 W 5983167.82 N 617873.18 E 0.0D0 3315.4I 3363.94N 1170.38 W 5983199.91 N 6178§2-2:9 E 8,000 3347.48 34-18.34 N 1155.95 W 5983254.53 N 617895,85 E 8.000 3402.08 3458.98 N 1146.'[1 W 5963295.33 N 617905,05 E 0.00D 3442.86 3553.98 N 1123.09 W 5983390.68 N 617926.55 E 0.000 3538.16 3648.97 N 1100.08 W 5993486.02 N 617948,05 E 0,000 3633.46 36cJ0.10 N 1090.12 W 5983527.30 N 617957.36 E 0,00D 3674.72 3744.27 N 1076.94 W 5983581.67 N 617969.67 E 6.000 3729.06 3840.83 N 1053.20 W 5983678.60 N 617991.88 E 6.000 3825.95 3886.19 N 1041.93 W 5983724.13 N 618002.42 E 6.000 36~71-45 3937.48 N 1027.66 W 5983775.65 N 618015.87 E 6.000 3922.94 4031.86 N 993.43 W 5983670.06 N 618048,60 E 6.000 4017-28 4125:[8 N 949.84 W 5983969.56 N 618090.76 E 6.000 4107.70 4166.75 N 923.13 W 5984006.55 N 618116.74 E 6.G00 4153.63 Start Dir ~ 34.000°/100ff: 9687.59ff MD, 8744.58ft TVD 1 arget: S-23A T1N, Geologica SHUBLIi( Dir R~e Decrease @ 12.000°/100[t: 9854.93fl MD, 8830.77ff TVD Enc[ D[r: 9959,10ft MD, 8630.761l TV~) Start Dir @ 8.000°llO0ft: 9966.38lt MD, 8830.00ft TVD Target: S-23A T2N, Geolo§~cal Er~d D[r: 10057-21ff MD, 8815.63ft TVD Start DI~ {~ 6.000°/100ft: 10343.29tt MD, 8755.16~t TVD Target; S-23A'I'3N, Geological End Dir: 10852.93ft MD, 8744.40ft TVD Continued... 15 December, 1-998 o 15:33 -3 ~ Dr/t/Quest Prudhoe Bay Unit Measured Depth Incl. Az[m. Sperry-Sun Drilling Services Dogleg Rate Sub-Sea Vertical Local Coordinates Global Coordinates Depfft Depth Northings Eastings Northfngs Eastings (ft) m} (ft} (ft} (ft) Vertical Section Comment p [ p0 .aska S'ate P'ane Zone 4 PBU_WOA S Pad 10900.00 85.982 31.931 8684.12 8747.70 4206=.60 N 898.30 W 11000.00 85.982 31.931 8691.13 6'754.71 4291.2.B N 845.54. W 11100.00 85.:982 31.931 8698.I3 8761.71 4375.92 N 792.78 W 11200.00 85.:982 31.931 8705.14 8768.72 4460.58 N 740.02 W 11239.54 85.:982 31,931 8707.91 8771.49 4494.05 N 719.16 W 1'[300.00 85,982 31.931 8712.15 8775.73 4545.24 N 687.26 W ~[1400.00 85.982 31.931 8719.15 6782.73 4629.0;) N 634.50 W '[1500.00 85.982 31.931 8726.16 8789.74 4714.56 N 581'.74 W 11600.00 85.982 31.931 8733.17 8796.76 4799.22 N 528.98 W 11626.15 85.982 31.931 8735.00 8798.58 4821.36 N 515.19 W 11700.00 87.276 34.591 8739.:34 8602.92 4883.00 N 474.76 W 11761.89 88.365 3S.816 8741.70 8605.28 4933.22 N 438.67 W 11800.00 88.365 36.816 8742.78 8806.36 4963.71 N 415.84 W 11900.00 88.365 36.816 8745.64 8809.22 5043.74 N 355.94 W 12000.00 88.365 36.816 8748.49 8812.07 5123.76 N 296.04 W 12082.63 88.365 36.816 8750.85 8814.43 5169.89 N 246.54 W 12100.00 86.365 36.816 8751.34 8814.92 5203.78 N 236.14 W 12200.00 88.365 36.816 8754.20 8817.78 5283.81 N 176,24 W 12300.00 88.365 36.816 8757.05 8820.63 5383.83 N 116.34 W 12400.00 88.365 35.816 8759.90 8823.413 5443.86 N 56.44 W 12403.37 88.365 36.8~6 8760.00 8823.56 5446.55 N 54.42 W 5964046.79 N 618140.94 E 59841~?_.~7 N 618192.35 E 5964217.76 N 618243.75 E 59643~-~ N 618295.18 E 59643~'7.05 N 618315.49 E 59~36S.74 N 618346.57 E 5984474.23 N 618397.97 E 5984559.72 N 618449.36 E 5984645.2:0 N 618500.79 E 5984667.56 N 618514.2.3 E 598472:9.83 N 618553.67 E 5984780.62 N 618588.96 E 5984811.47 N 618611.30 E 5984892.44 N 618669.92 E 5984973.41 N 618728.54 E 5985040.31 N 618776.98 E 598505~.37 N 618787.16 E 5985135.34 N 618845.78 E 5985216.30 N 618904.40 E 5985297~T/N 618963.02 E 5985300.00 N 618965.00 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 4.000 4.000 o.00o o.o0o o.ooo 0.000 0.000 0.000 O.000 0.000 4193.81 427:9.19 4964.57 4483.71 4535.33 4620.71 4706.09 4791.47 4813.80 ~26.70 49~.51 5038.~ 5119.19 5185.99 ~00.03 ~80.88 5361.72 5~2.~ 5~5.29 Sail @ 85.982~ Inclination on 31.931 ' Azlmuk5 TSlaad Dir ~ 4.000°/100R.: 1 ~162.6.15ft MD 8798.58flTVD rgek S-23A T4N, Geo{oglcm ' End D[r: 11761.89t~ MD, 8805.28ft TVD Sail @ 88.365' Incllnat~n on 35.816' AzImuih Total De;~h: 124D3.37~t MD 8823.58ft ']'VD 4 1/2' Litter ' Target: $-23A T5N, Geological AJI data is in feet unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are rel;~t[ve to Well Northings and Eastings are relative to Well. Magnetic Declination at Sudsce is 0.000° (21-Oct-98) The Dogleg Severity is in Degrees per 100ff. Vertical Section is from Well and calculated along an Azimuth of 0.790° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 12403.37ft., December, 19~78 - 15:33 - 4 - Ori/IQuesr Sperry-Sun Drilling Services Proposal Report for S-23A Wp2 Prudhoe Bay Unit The Bottom Hole Displacement is 5446.83ft., in the Direction of 359.428° (True). Comments Measured Depth 3<J00.00 4-121.61 4361.61 4735.24 7211.42 9687.59 9959.10 9966.38 10{:~7.21 10343.29 16'852.93 11230.5¢ 11626.I5 11761.89 12082.63 12403.37 Station 'rVD (It) 3854.94 4050.38 4262.29 4586.96 6665.7-/ 6744.59 8830.77 8830.76 8830.0~3 8815,63 Coordinates North[rigs East/rigs (ft) (fi:) 235.45 N 125.28 W 314.81 N 192.56 W 380.91 N 263.61 W 530.23 N 387.08 W 1809.99 N 802.05 W 308:9.74 N 1217.04 W ,3225.03 N 1210.37 W 3325.00 N 1182.17 W 3332.00 N 1180.00 W 3418.34 N 1155.96 W 8755.16 3690.09 N '~090.12 W 8744.40 4166.75 N 923.13 W 877'1.49 4494.05 N 719.16 W 8798.58 4821.36 N 515.19 W 8805.28 4933.21 N 438.67 W 8814.43 5189,69 N 246.54 W 8823.56 5446.55 N 54.Zl2 W Comment KOP: S~art Dir @ 6.0~0°/100ft: 3900.00fl MD, 3854.94ft TVD End Dir: 4-121.6'111. MD, 4050.38ftTVD S~art Dir @ 5.090'/101)ft: 436~.61ft MD, 4262,29ff 'I-VD End Dir: 4735.241t MD, 4586.96ffTVD Sail @ 32.910' laclinaEon ~n 342.034' Azimu~ Start D~r @ 34.000°/10Dft: 9687.59~t MD, 8744.58E TVD D[r Rate Decrease {~ 12.00D=J100ff: 9854.93~ MD, 8830.77fl TVD E~]d Di~: 9959.11~t MD, 8B30.7611 TVD Start D[r @ 8.000°/10Oft: 9966.,38t1. MD, 8830.00ff TVD End D]~: 10057~.1ff MD, 8815.6311TVD Start Dir @ 6.000°1100ff: 10343.2~ MD, 8755.16ft TVD End Dir: 10&52.9~ MD, 8744.40E'i-VD Sari @ 85~82.° Irmlinalion on 31.931° Azimuth Slad Dir @ 4.0O0°J'100fl: 11626.15fl MD, 8798.58fl TVD End Dir: 11761,89ft MD, 8805.?_.8~t TVD Sail @ 88.365° Irrcl~nati~n on 36.816° Azimuth Total Depth: t2403.371~ k~D, 8823.58ft']'VD Alaska State Plane Zone 4 PBU_WOA S Pad Co,~linued... 15December, 199E - 15:33 - 5 - Dr/l/Quest Prudhoe Bay Unit Formation Tops Measured Vertical Sub-Sea Depth Depth Depth Northings (ft) (n) (ft) 7244.54 6693.58 6630.00 1827.11 N 8133.14 7439.58 7376.00 2286.36 N 9687,59 8744.58 8661.00 3089.74 N g750.g9 8791.58 8728.00 3131.35 N Casing details From To Measured Vertical Measured Yeti[cai Depth Depth Depth Depth (ft) (f't) (ft) (ft) 410D,00 4031,29 9587.59 8744.58 <SurfAce> <Surface> 12403.37 88,23.58 Targets associated with this wellpa~h Target Name S-23A Po[y Sperry-Sun Drifting Services Proposal Report for S-23A Wp2 Alaska State Plane Zone 4 PBU_WOA S Pad Eastings (ft) 807.60 W g55.52 W 1217.04 W 1222.74 W Formation Name LCU KINGAK SAGR SHUBL1K P[ANNI tG PU POSE ; 0NIY Casing Detail 7' Casing 4 1/2' Llne~ Target Enlry Coordinates TVD Northings Eastings (ft) (ft) (fi) 8763.58 3130.54 N 1581.43 W k~,ean Sea Level/Global Coo~dinales: 8700.C-0 5982960.00 N 617475.00 E Geographical Cooldinates: 70" 21' 43.7774' N 210" 57' 15.6162' E Targat Boundary Point #1 8763.58 3130.54 N 1581.43 W #2 8763.58 4579.0D N 970.33 W #3 8763.58 5545.74 N 253.87 W ~4 8763.58 5366.57 N 132.33 E #5 8763.58 4159.83 N 647.95 W ~6 8763.58 2948.34 N 1130.27 W Target Shape Poison Target Type Geological Con,hued... 15 December, 1~9E - 15:33 -6- DrillQuest Prudhoe Bay Unit Target Name Targets associated with this weilpath (Continued) S-23ATfN S-23A T2N S-23A T3N S-23A T4N S-23A TSN Sperry-Sun Drilling Services Proposal Report for S-23A Wp2 FOI COPY PL/[NNlt ,16 PURPOSES O LY Target TVD Mean Se~ Level/Global Co~fes ~1 ~2 ~3 ~4 fl5 ~6 Geographical Coordinates #1 #3 ;74 W6 Mea~ Sea LeYe~/Global Coordinates: GeographicaJ Coordinales: Mea;~ Sea LeveVGIobal Coordinales: Geographical Coordinales: Mean Sea LeveVG~Dbal Coordinales: Geographical Coordlnale~.. Mean Sea LeveYG[obal C~ordinMes: Geographical CoordJrmles: Mean Sea Level/Global Coordinales: Geog;~-phical Coordinales: 8700.00 8700.00 8700.O0 8700.00 8700.00 8700.00 8744.50 8681.00 8~530,00 8766.42 8733,58 8670.00 8790.50 8735.00 8823.58 8760.0D Alaska State Plane Zone 4 PBU_WOA S Pad Entry Coord[nales Nm'things Eastings (~t) (ft) Target Target Shape Type 5982~60.00 N 617475.00 E 5984418.00 N 618063.00 E 598539 $.00 N 6 ! 8764.00 E 5985223.00 N 619153,00 E 5984004.00 N 618392,00 E 5982785.00 N 6~7929.00 E 70° 21' 43.7774' N 210' 57-15.6162' E 70' 21' 58,0251' N 210' 57'33,4618' E 70° 22' 07.5342' N 210' 57-,54.4371' E 70° 22' 05.7720' N 210' 58' 05,7347' E 70~ 21' 53.9025' N 210' 57- 42.9123' E 7o° 21' 41,9862- N 210' 57' 28.81D7' E 3089.74 N 1217.04 W Point 5982925.{)0 N 617840,00 E 70° 21' 43.3768' N 210' 57' 26~.726' E 3,332.00 N 1180.00 W Point 5983167.82 N 617873.18 E 70~ 21' 45,7597' N 210' 57-27.3547' E 3886.19 N 1041.93 W Point 5983724.13 N 5]8002.42 E 70°21'51.2107- N 210' 57' 31.3903' E 4821.36 N 515.19 W Point 5984667.56 N 618514.23 E 70°22'00.4093' N 210' 57'46.7941' E 5446.55 N 54,42 W Point 5985303.00 N 618965.00 E 70° 22' 06.5557' N 21 O' 58' 0D.2717' E Geo:oglcal Geo,'ogical Geo[oglc&l Geo[ogical Geological December, 1,998 - 15:33 - 7 - DriilQuest TREE: 4-1,16"-5M C,W ( S'23 KB. ELEV= :,,.,,o ACTUATOR: OTIS SSSV LANDING NIPPLE I 2109 13-3/8", 68#/ft, ~1 '~ (Otis)(3.813" ID) E, BTRS CMT'd- ?"YI'!~ W! !-1/~" 1~,8 ! AT~.I-I) ! 5 3165 3100 4 5919 5200 _[__ 3 8397 6892 I--"-;,I ~- ~ ~o.o~ , ~o~ I MAX ANGLE: 520 I · TDS ~0.-,.0 ~.,~ ! I -1-- "'~ .... sws" ~,.... CAPACITY: 0.0152 BBUFT | (PARKER) (3.813" ~D) ' 10618 I/"^"""~u~'"~ I ~o~. ~ ANCHOR ' ~ r r~__ ~-~." .AC... I ~ --_ (Baker) (3.99" ID) I 10625 I I T - 4-1/2", 12.6 #/ft, L-80 TAILPIPE = = ~ - 4-1/2 .... SWS" NIPPLE LT;:)nPe~3fH;Inw I , .,o,., ~,er ' ' I--t-- - 4-',~, .... XN"N,,:',:',,: I .I I (OTIS) (3.725" ID) 10702 9'5'8"' 47#'ft' I I J ' '1 ~' - 4'I/2''WLEG I10713 NT-80S, NSCC I 10928 I ~ I ~ (ELMD) I 10738 MARKER JOINT I 11113 PERFORATION SUMMARY REF: LOG: MWD ESITIV.10/10/90 SIZE SPF INTERVAL OPEI I/SQZ'D 3-3/8 4 11165-11172 OPEN 3-3/8 6 11165-11172 OPEN / 11-91 ~ NOTE: 3"FLOWLINE IN SKID 3-3/8 6 11182-11220 OPEN / 11-91 I ~ PORTIONS OF THIS WELL'S 3-3/8 4 11182-11294 OPEN ~ FLOWLINE ARE 3" AND 3-3/8 4 11304-11354 OPEN F SUBJECT TO EROSION. THE 3-3/8 4 11364-11386 OPEN I GC SHOULD BE NOTIFIED OF 3-3/8 4 11396-11408 OPEN I ANY WELL OPERATION I WHICH COULD INCREASE I FLOW OR EROSION RATES. PBTD I 11582 I . 7", 26 #/ft, .L-80, BTRS [ 11634 J DATE REV. BY COMMENTS PRUDHOE BAY UNIT 10-16-90 DFF INITIAL OMPLETION WELL: S-23(42-27-12-121 11-o5-9o RAB INITIAL PERFORATIONS APl NO: 50-029-22082-00 11/29/9o CUM ADDED TBG TAILELMD SEC 35:T1 2N' RG1 2E 11/19/91 RQM ADDED FRAC PERFS BP EXPLORATION GAS LIFT MANDRELS 'C3TI~ W/ 1-1/"P" R,8 I ATRI-,r~ · .H-° MD(BY.B) .-D/Dss 5 3165 3100 4 5919 5200 3 8397 6892 2 1 O4O3 83O2 1 10589 8432 S-23 Wellhead: E~F / MSL = 35.73' Nabors 7ES: K~ / MSL ~ 'X' Nipple ~ 2200' --~ 7', 26# L-80 E~TC-Mod Liner Top -- 4-t/2', I2.~, L-~0 IBT-Nlod Tubing 7" x 4,5" Baker Packer 4~1/2", 12.6# L-80 IBT-Mod Slotted Production Liner Shoe @ TSag Shoe Sqz'd Perforations: 11,165' - 1 t,408' 12/t6/98 PBTD ~ 7" 26# L-80 ~ COMMENTS Proposed Completion PRUDHOE BAY UNiT APJ NO: 50~029~22082-01 SEC 35; TI~N; R12E BP Exploration Alaska hared ervices rilling WELL NAME S-23A DRILLING PERMIT/SUNDRY/PRE-RIG COVER SHEET IThe attached work cannot commence without obtaining the required signatures in I the "APPROVAL TO PROCEED" section at the bottom of this cover sheet. I "APPROVAL TO PROCEED" will signify AOGCC approval has been received. This cover sheet is aoolicable to: (only one category per cover sheet) DRILLING PERMIT [~'] Permit Documentation Prepared: ODE:~,,'X'X.~ qb_ . Date: '~t~ Permit Applica~rfon Re-view{pea: SDE/ES: ~-, --r,o. ~ Date: }d~6to~ ! Permit ~M~plicatipp S~]b~aj~t~ed: vclf-'/-~'"I/Iq TA: '~_~]~t_.~ ~ Date: [-~ SUNDRY NOTICE D Sundry Documentation Prepared: ODE: Date: [~ Sundry Application Reviewed: SDE/ES: Date: ID Sundry Application Submitted: TA: Date: NOTE: G ! NI~DRY IS FOR PRE-RIG WORK, USE ' PRE-RIG WORK SECTION AT BELOW LEFT AND CHECK "ABANDON" BOX BELOW ~'] PRE-RIG WORK Reason for Sundry (Check all that aooly) D E3 Pre-Rig Memo Reviewed: SDE/ES: Date: Pre-Rig Memo Sent to Slope: ODE: Date:~ Pre-Rig Sundry Documentation Prepared: ODE: Date: Pre-Rig Sundry Application Reviewed: SDE/ES: Date: Pre-Rig Sundry Application Submitted: TA: Date:~ Abandon Alter Casing Suspend Repair Well Plugging Pull Tubing Variance Other(Explain): APPROVAL TO PROCEED Change Approved Program Operation Shutdown Re-enter Suspended Well Time Extension Perforate Stimulate ;J "'" 'i'"~ I Approved AOGCC Permit/Sundry Received TA: Date: I Approval to Commence Operations SDE/ES: Date: VEN~R ALASKAST14 O0 "' DATE INVOICE / CREDIT MEMO DESCRIPTION GROSS DISCOUNT NET 091 ~c~B CKOc) 15c2~ I 100. O0 100. O0 HANDLINg INST: S/H TERRI HUBBLE X462B *TI'ACHED CHECK IS IN PAYMENT FOR ~TEMS DESCRIBED ABOVE. ~. OO ,, O0 1 OO- OO BP EXPLORATION (ALASKA), INC. P.O, BOX 196612 ANCHORAGE, ALASKA 99519-6612 FIRST NATIONAL BANK OF ASHLAND AN AFFILIATE OF NATIONAL CITY BANK CLEVELAND, OHIO 56-389 412 No., H 142929 CONSOLIDATED COMMERCIAL ACCOUNT 00142929 PAY To Th e O'rd e'r Ot~ ONE HUNDRED & OO/1OO~~~~~~~~~~ US DOLLAR ALASKA STATE DEPT OF REVENUE 3OO1 PORCUPINE DR ANCHORAGE' AK ~501-3120 DATE AMOUNT I $1°°'°°1 'NOT VALID AFTER 120 DAYS FIELD & POOL ADMINISTRATION ,., wELL ~i~,ME ./~_~__~. ,~'~"**~__. '~ ,,,~ ' ' pRo~RAI~= exp I-I dev~l~l' redrll-'~ serv r-I wellbore segl, ann. disposal para reqll GEOL AREA _ ~"~,,,'",~ UNIT# ,,'/,,,'"~'~"<:::~ ON/OFF SHORE r'~,~.-~__ ENGINEERING 1. Permit fee attached ....................... 2. Lease number appropriate ................... 3. Unique well name and number .................. 4. Well located in a defined pool .................. 5. Well Iocaled proper distance from drilling unit boundary .... 6. Well Iocaled proper distance from other wells .......... 7. Sufficienl acreage available in drilling [init ............ 8. If deviated, is wellbore plat included ............... 9. Operator only affected party ................... 10. Operator has appropriate bond in force ............. 11. Permit can be issued without conservation order ........ 12. Permit can be issued without administrative approval ...... 13. Can permit be approved before 15-day wait ........... N N --Y--N- ~ N ~ N ~ N APPR DATE Y N Comments/Instructions: 14. Conductor string provided ................... 15. Su[face casing protects all known USDWs ........... 16. CMT vol adequate to circulate on conductor & surf csg ..... 17. CMT vol adequate to tie-in long string to surf csg ........ ,y, N 18. CMT will cover all known productive horizons .......... ~ N 19. Casing designs adequate for C, T, B & permafrost ....... {~) N 20. Adequate tankage or reserve pit ................. 21. If a re-drill, has a ~0-403 for abandonment been approved... 22. Adequate wellbore separation proposed ............. (~ N 23. If diverter required, does it meet regulations .......... 24. Drilling fluid program schematic & equip list adequate ..... 25. BOPEs, do they meet regulation ................ 26. BOPE press rating appropriate; test to ,MoOO psig. (~ N 27. Choke manifold complies w/APl RP-53 (May 84) ........ ~ N 28. Work will occur without operation shutdown ........... 29. Is presence of H2S gas probable ................. GEOLOGY 30. Permit can be issued wlo hydrogen sulfide measures ..... Y N 31. Data presented on potential overpressure zones ....... ~Y 32. Seismic analysis of shallow gas zones. ' ~YY i N ~'L.-,-', //. 33. Seabed condition survey (if off-shore) ........... . . . Y N ' ' APPR D T 34. Co,ntacl.nam. e/phon.e.for weekly progress reports ....... / D,~_~_~. l exp,ora,ory omyj ANNULAR DISPOSAL 35. With proper cementing records, this plan (~was_te in _a suitable rece~ .... Y N APPR DATE (B) will not con a ' ; ca[me drilling waste... Y N to,s..~urface; ~ (C) wi~"~egrity of the well us~"~~e -disposal; Y N (r)) w' . amage producing formation or impair recovery from a pool; and (E) .will no.t circu .m,.vent 2~ A_A_.C 25.252 or 20 AAC 25.412. Y N GEOLOGY: ENGINEERING: Ul_C/Anr~lar COMMISSION: R . _ BEW~j.~.I~./r,,?~ WM'~---~" DWJ ,/ ~ M:cheklisl rev 05129198 cflf C, \m~¢'~ffi('n~w(~rdinr~X¢flnl *.\, I ~r, I, h',l