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197-012
MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Wednesday, October 22, 2025 SUBJECT:Mechanical Integrity Tests TO: FROM:Sully Sullivan P.I. Supervisor Petroleum Inspector NON-CONFIDENTIAL Hilcorp North Slope, LLC N-23A PRUDHOE BAY UNIT N-23A Jim Regg InspectorSrc: Reviewed By: P.I. Suprv Comm ________ JBR 10/22/2025 N-23A 50-029-21725-01-00 197-012-0 W SPT 8117 1970120 2029 448 450 450 450 0 0 0 0 4YRTST P Sully Sullivan 9/8/2025 30 MinPretestInitial15 Min Well Name Type Test Notes: Interval P/F Well Permit Number: Type Inj TVD PTD Test psi API Well Number Inspector Name:PRUDHOE BAY UNIT N-23A Inspection Date: Tubing OA Packer Depth 60 2400 2340 2326IA 45 Min 60 Min Rel Insp Num: Insp Num:mitSTS250910170155 BBL Pumped:5.3 BBL Returned:5.6 Wednesday, October 22, 2025 Page 1 of 1 MEMORANDUM TO: Jim Regg�. 1[) I I I '7.6 Z( P.I. Supervisor 1 FROM: Bob Noble Petroleum Inspector NON -CONFIDENTIAL State of Alaska Alaska Oil and Gas Conservation Commission DATE: Monday, September 20, 2021 SUBJECT: Mechanical Integrity Tests Hilcorp North Slope, LLC N -23A PRUDHOE BAY UNIT N -23A Src: Inspector Reviewed By: P.I. Supry 1IZ Comm Well Name PRUDHOE BAY UNIT N -23A API Well Number 50-029-21725-01-00 Permit Number: 197-012-0 InSp Num: mitRCN210912153944 Rel Insp Num: Inspector Name: Bob Noble Inspection Date: 9/12/2021 Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min ,— — Well N -23A Type In'J W , TVD YP 8117 Tubing 1 412 416 — g -_-73 409 1 -- - _ — PTD 1970120 Type Testi SPT'ITest psi zoz9 IA 2405 23 - BBL ped: 5.6 BBL Returned: 5.6 ' OA 109 366 ' 363 -_ _I Interval - --- -- - 4YRTSTP/Ii L -- P X - Notes: Monday, September 20, 2021 Page 1 of 1 Wallace, Chris D (CED) From: Alaska NS - PB - Field Well Integrity <PBFieldWelllntegrity@hilcorp.com> Sent: Tuesday, October 20, 2020 4:38 PM To: Wallace, Chris D (CED) Cc: Alaska IMS User; Aras Worthington; Bo York; John Menke; Oliver Sternicki; Stan Golis; Regg, James B (CED) Subject: OPERABLE: Injector N-23 (PTD #1970120) Inner Annulus re -pressurization resolved Mr. Wallace, Injector N -23A (PTD # 1970120) passed an MIT -IA to 2966 psi and wellhead techs were able to tighten lock down screws on the tubing spool on 10/07/20. The well has remained on injection and no re -pressurization has been observed. The evidence suggests that the IA re -pressurization was through the wellhead and has now been resolved. The well is now classified as OPERABLE. A 30-426 with the MIT data will be submitted at the end of the month for your records. Please call with any questions or concerns. Ryan Holt Hilcorp Alaska LLC Field Well Integrity/ Compliance Ryan.Holt@Hilcorl).com P:(907)659-5102 M:(907)232-1005 Operator Name:2. Exploratory Development Service 5 Permit to Drill Number:197-012 6.API Number:50-029-21725-01-00 PRUDHOE BAY, PRUDHOE OIL Hilcorp North Slope, LLC 5. Field/Pools:9. Well Name and Number: ADL 0028282 Property Designation (Lease Number):10. 8. PBU N-23A 7.If perforating: What Regulation or Conservation Order governs well spacing in this pool? Will planned perforations require a spacing exception? Stratigraphic Current Well Class:4. Type of Request:1.Abandon Plug Perforations Fracture Stimulate Repair Well Operations shutdown Op Shutdown GAS GSTOR5WAG SPLUG Abandoned Oil WINJ Exploratory Development Stratigraphic 5Service WDSPL 12. Attachments: PRESENT WELL CONDITION SUMMARY 11852 Effective Depth MD: L-80 11. 10/14/2020 Commission Representative: 15. Suspended Contact Name: Oliver Sternicki Contact Email: oliver.sternicki@hilcorp.com Authorized Name: Stan Golis Authorized Title:Operations Manager Authorized Signature: Plug Integrity BOP Test Mechanical Integrity Test Location Clearance Other: Yes No Spacing Exception Required?Subsequent Form Required: Approved by:COMMISSIONER APPROVED BYTHE COMMISSION Date: 5OtherAlter Casing Pull Tubing Conditions of approval: Notify Commission so that a representative may witness Sundry Number: COMMISSION USE ONLY 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approval. Detailed Operations Program Packers and SSSV Type: No SSSV Installed Packers and SSSV MD (ft) and TVD (ft): Perforation Depth MD (ft):Tubing Size: Size Total Depth MD (ft):Total Depth TVD(ft): 8738 Effective Depth TVD:Plugs (MD):Junk (MD): Other Stimulate Re-enter Susp Well Suspend Plug for Redrill Perforate Perforate New Pool 9512 / 8117 No SSSV Installed Date: Liner 2231 4-1/2"9564 - 11795 8160 - 8734 8430 7500 Well Status after proposed work: 16. Verbal Approval: Change Approved Program 32 - 2770 32 - 2689 14. Estimated Date for Commencing Operations: BOP Sketch 29 - 109 Structural 6870 Proposal Summary 13. Well Class after proposed work: 9-5/8" x 4-1/2" TIW HBBP Packer 10570 - 11730 8665 - 8731 4-1/2" 12.6#26 - 9570 Liner 11740 8731 None None 29 - 109 13-3/8" 9-5/8" Contact Phone:(907)564-4891 Date: 4760 80 20"Conductor 2670 GINJ 5 Post Initial Injection MIT Req'd? Yes No 5 Comm. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Surface 1924 5380 Intermediate 9976 29 - 10005 29 - 8530 310 7"9733 - 10043 8301 - 8562 8160 7020 Address:3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 3. No 5Yes Casing Length MD TVD Burst Tubing Grade:Tubing MD (ft):Perforation Depth TVD (ft): Collapse MPSP (psi): Wellbore Schematic Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 03/2020 Approved application is valid for 12 months from the date of approval. Packoff Sealant Squeeze By Samantha Carlisle at 8:49 am, Oct 08, 2020 320-242 Digitally signed by Stan Golis DN: cn=Stan Golis, ou=Users Date: 2020.10.08 06:31:16 - 08'00' Stan Golis 10-404 MGR09OCT20 SFD 10/8/2020 Yesn Required? Comm 10/9/2020 dts 10/9/2020 JLC 10/9/2020 424 RBDMS HEW 11/3/2020 Wellhead Sealant Well: N-23 PTD: 197-012 API: 50-029-21725-01-00 N-23A Packoff Sealant Squeeze Well Integrity Engineer:Oliver Sternicki, (907)350-0759 Operations Engineer Engineer:Brian Glasheen (907)545-1144 Expected Start Date:10/8/2020 History WAG injection well N-23 (PTD# 197-012) began showing signs of IA repressurization on MI on 10/6/2020 and was placed under evaluation. Wellhead diagnostics with the well online have shown that the secondary tubing hanger seals have failed. The tubing was loaded and a passing MIT-IA was conducted on 10/7/2020. Current Status The well was shut in for the MIT-IA on 10/7/2020, but will be placed back on injection for further diagnostics as needed. Objective Repair leaking tubing hanger secondary packoff by injecting sealant/well lock/greenstick packing into the packing port void. Procedure 1. Pack the tubing hanger packing port void with sealant/well lock/greenstick or similar and squeeze to 5000 psi. • • • MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Tuesday,October 17,2017 TO: Jim Regg -� P.I.Supervisor 1°1 7(17 SUBJECT:Mechanical Integrity Tests ( BP EXPLORATION(ALASKA)INC. N-23A FROM: Guy Cook PRUDHOE BAY UNIT N-23A Petroleum Inspector Src: Inspector NON-CONFIDENTIAL Well Name PRUDHOE BAY UNIT N-23A API Well Number 50-029-21725-01-00 Inspector Name: Guy Cook Permit Number: 197-012-0 • Inspection Date: 9/14/2017 Insp Num: mitGDC170914142230 Rel Insp Num: MITOP000006645 Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well N-23A Type Inj W •TVD 8117 ' Tubing 651 651 • 651 - 651 PTD 1970120 Type Test SPT Test psi 2029 - IA 0 2398 . 2353- 2337 BBL Pumped: 10.5 'IBBL Returned: 5.5 OA 30 36 - 36 • 36- Interval Four Year Cycle P/r' Pass ✓ Notes: A triplex pump and bleed trailer were used for testing. Dewatering was injecting into the well during testing. The IA level was lower than anticipated by the crew due to the cold temperature of the well due to it being offiline and being injected into by dewatering only. See' C 461/W �. 'P k1 eje oea_� c Uef.Cc.tr,C scow FEB 2 1 L' Tuesday,October 17,2017 Page 1 of 1 Pgu p (17oiz. Regg, James B (DOA) MIA-ch L-4:'? VI' mil-- &ee►20t t414Z23c1 ' From: AK, GWO Well Integrity Engineer <AKGWOWellSiteEnginee@bp.com> Sent: Friday, October 13, 2017 3:07 PM +,3 7 To: Regg,James B (DOA);AK, GWO Projects Well Integrity Cc: AK, GWO SUPT Well Integrity;Wallace, Chris D (DOA); Brooks, Phoebe L (DOA) Subject: RE: Sept. 2017 MIT Forms Jim; An IA fluid level was obtained on N-23A prior to the state witnessed MIT-IA and the IA fluid level was determined to be near surface. However,the IA fluid level was obtained with the well on produced water injection,with the wellhead temperature at 150 degrees. N-23A was used for pit dewatering this year and the wellhead temp was 48 degrees at the time of dewatering and also at the time of the MIT-IA. There was some thermal cooling during the time from when the IA fluid was obtained and the time of the state witnessed MIT-IA, allowing the fluid level to drop. We can see based off of trends that since the conclusion of the dewatering, the IA is starting to slowly pressure back up due to hotter fluids being injected. q A61144 4bl— Rua (24Cleal PALS- k Let me know if you have any further questions. Thanks. Matt Ross (Alternate: Josh Stephens) Well Integrity Engineering Office 907-659-8110 Cell 907-980-0552 I larmony 4530 From: Regg, James B (DOA) [mailto:jim.reggi alaska.gov] Sent: Thursday, October 12, 2017 11:33 AM To: AK, GWO Projects Well Integrity Cc: AK, GWO SUPT Well Integrity; AK, GWO Well Integrity Engineer; Wallace, Chris D (DOA); Brooks, Phoebe L(DOA) Subject: RE: Sept. 2017 MIT Forms Need some explanation about the PBU N-23A (PTD 1970120) MIT. Test report indicates the IA was on vacuum (pretest) —that seems unusual given the closed annulus, maintaining positive pressure in the annulus (for various reasons) and the criteria in our Guidance Bulletin 10-02B that require the well is to be fluid packed before AOGCC arrives for witnessed MIT. Also provide TIO pressure plot(and temperature, if available) for the past 90 days. Jim Regg Supervisor, Inspections AOGCC 333 W.7th Ave,Suite 100 Anchorage,AK 99501 907-793-1236 CONFIDENTIALITY NOTICE:This e-mail message,including any attachments,contains information from the Alaska Oil and Gas Conservation Commission(AOGCC),State of Alaska and is for the sole use of the intended recipient(s).It may contain confidential and/or privileged information. The unauthorized review,use or disclosure of such information may violate state or federal law.If you are an unintended recipient of this e-mail, 1 • • please delete it,without first saving or forwarding it,and,so that the AOGCC is aware of the mistake in sending it to you,contact Jim Regg at 907- 793-1236 or jim.regg@alaska.gov. From:AK, GWO Projects Well Integrity [mailto:AKDCProiectsWelllntegrityEngineer@bp.com] Sent:Sunday, October 8, 2017 1:21 PM To: Regg,James B (DOA)<jim.regg@alaska.gov>; Wallace, Chris D (DOA) <chris.wallace@alaska.gov>; Brooks, Phoebe L (DOA) <phoebe.brooks@alaska.gov> Cc:AK, GWO SUPT Well Integrity<AKDCWelllntegritvCoordinator@bp.com>; AK, GWO Well Integrity Engineer <AKGWOWeIISiteEnginee@bp.com>; AK, GWO Projects Well Integrity<AKDCProjectsWelllntegritvEngineer@bp.com> Subject:Sept. 2017 MIT Forms All- Attached are the filled out AOGCC MIT forms for tests performed by BP in September of 2017. Well: PTD#: Notes: 14-21A 2051070 4 year MIT-IA A-35 1850510 4 year MIT-IA 09-22 1831730 AA 4E.04 for slow lAxOA communication 09-37 1940280 4 year MIT-IA L-216 2040650 4 year MIT-IA --- N-23A 1970120 4 year MIT-IA NGI-01 1750480 4 year MIT-IA NK-18 1931770 4 year MIT-IA NK-65 2050630 4 year MIT-IA P-03A 1972280 4 year MIT-IA X-29 1931390 4 year MIT-IA X-33 1961440 AA 4F.007 for IA repressurization Thank you, (Ad /i"owa, BP Well Integrity Office: 907-659-5766 Harmony-2377 Global WNio-,!s Cnt 2 • • 4, ..,ri,Lg304S 76 2 'EL, ;, I 1111I v.0 zr, . 4 0 w . , E 0415c 41, 00c00z4,- 8Wit 7 Kr.PO li * •*+* ,.., - .. . . . I ii I • I, C71 Temp,r Mr( •J V . ,, ( I E., • , I , • I 4-- tr.4 c., .-- • , 23 .-- g F4 kl ) .-- £q t I ' g i' F3 i I 8 / t 3 t I, 11 .ti 8 , Ii' if I, 1 1 4 41 ,_ . „ 0 0 -g ci_ g g +., ra cc ._-..' LI— 8 ZS c as r•-• ...—. cu ‘-1 r•I cy) D o• , ‘ 1 v—i ft5 h. 0 CU r-I -a E 0 a) cu 44.44. 10 6 m ,13 z 1 0 l'•.1 t v) , I cij CU r. § § § § 6 _ dIHM Wallace, Chris D (CED) From: Alaska NS - PB - Field Well Integrity<PBFieldWellIntegrity@hilcorp.com> Sent: Tuesday, October 6, 2020 5:52 AM To: Regg, James B (CED) Cc: Wallace, Chris D (CED); Alaska IMS User; Alaska NS - PB - Field Well Integrity; Aras Worthington; Bo York; John Menke; Oliver Sternicki; Stan Golis; Travis Smith - (C) Subject: UNDER EVALUATION: Injector N-23 (PTD #1970120) Inner Annulus re -pressurization Mr. Regg, Injector N -23A (PTD #1970120) was reported to have an anomalous inner annulus casing pressure of 1850psi on 10/5/20. The inner annulus was then bled to 300psi but has shown signs of re -pressurization overnight. The well will be placed under evaluation and is on the 28 day clock for diagnostics. Plan Forward: 1. Tubing hanger packoff test. 2. MIT -IA. 3. Additional diagnostics as needed. Please respond with any questions. Thank you, Eric Dickerman Hilcorp Wellsite Supervisor Office / Cell / Harmony: 659-5102 / 307-250-4013 / 196 • MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE: Monday,September 18,2017 TO: Jim Regg P.I.Supervisor �' efc� ifr `(7 SUBJECT: Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC. N-23A FROM: Guy Cook PRUDHOE BAY UNIT N-23A Petroleum Inspector Src: Inspector Reviewed By: P.I.Supry j-1 NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UNIT N-23A API Well Number 50-029-21725-01-00 Inspector Name: Guy Cook Permit Number: 197-012-0 Inspection Date: 9/14/2017 Insp Num: mitGDC170914142230 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well N-23A Type Inj W' TVD 8117 Tubing 651 651 651 - 651 PTD 1970120 - Type Test SPT Test psi 2029 IA 0 2398 _ 2353 - 2337 • BBL Pumped: 10.5 - BBL Returned: 5.5 OA 30 36 ' 36 • 36 - Interval [ 4YRTST _ P/F P Notes: A triplex pump and bleed trailer were used for testing. Dewatering was injecting into the well during testing. The IA level was lower than anticipated by the crew due to the cold temperature of the well due to it being offlline and being injected into by dewatering only. FEBSCANNED I j Monday,September 18,2017 Page 1 of 1 � \ � s.. THE�STATE e' EEka � ,'. ell . �, .s a oar yr d'. , 'rte.t'_.r A 333 Wes' Seventh Avenue GOVERNOR SEAN PARNELL Anchorage, Alaska 99501-3572 Main. 907.27'2.1433 Fc;x. 9;17.17!,.7:142 SCANNED JUL 1 6 2014 Denise Bailey Production Engineer l Of BP Exploration(Alaska), Inc. 7 Post Office Box 196612 Anchorage, AK 99519 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU N-23A Sundry Number: 314-337 Dear Ms. Bailey: Enclosed is the approved application for sundry approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC an application for reconsideration. A request for reconsideration is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. Sincerely, Cathy P. oerster Chair DATED this 41`3ay of June, 2014. Encl. RECEIVED STATE OF ALASKA MAY 2 9+ 201 ` • ALASKA OIL AND GAS CONSERVATION COMMISSION J iS lid 14- lei— APPLICATION FOR SUNDRY APPROVALS AOGC 20 AAC 25.280 1.Type of Request: Abandon❑ Plug for Redrill❑ Perforate New Pool❑ Repair Well❑ Change Approved Program❑ Suspend❑ Plug Perforations❑' Perforate❑ Pull Tubing❑ Time Extension❑ Operations Shutdown❑ Re-enter Susp.Well❑ Stimulate❑ Alter Casing❑ Other. 5�f pGl t'1 n 2.Operator Name: 4.Current Well Class: 5.Permit to Drill Number. / BP Exploration(Alaska),Inc. Exploratory ❑ Development ❑ 197-012-0 • 147l4-j it- 3.Address: Stratigraphic ❑ Service Q 6.API Number P.O.Box 196612,Anchorage,AK 99519-6612 50-029-21725-01-00 • 7.If perforating: 8.Well Name and Number What Regulation or Conservation Order governs well spacing in this pool? PBU N-23A • Will planned perforations require a spacing exception? Yes ❑ No ❑ 9.Property Designation(Lease Number): 10.Field/Pool(s): ADL0028282 ' PRUDHOE BAY, PRUDHOE OIL • 11. PRESENT WELL CONDITION SUMMARY Total Depth MD(ft): Total Depth TVD(ft): Effective Depth MD(ft): Effective Depth TVD(ft): Plugs(measured): Junk(measured): 11852 • 8738 • 11740 8731 None None Casing Length Size MD ND Burst Collapse Structural Conductor 80 20"Conductor 29-109 29-109 Surface See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Intermediate 9976 9-5/8"47#L-80 29-10005 29-8530.35 6870 4760 Production None None None None None None Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth MD(ft): Perforation Depth ND(ft): Tubing Size: Tubing Grade: Tubing MD(ft): See Attachment See Attachment 4-1/2"12.6#L-80 L-80 26-9570 Packers and SSSV Type: See Attachment for Packer Types Packers and SSSV MD(ft)and TVD(ft): See Attachment for Packer Depths No SSSV Installed No SSSV Installed 12.Attachments: Description Summary of Proposal ❑ 13.Well Class after proposed work: Detailed Operations Program O BOP Sketch ❑ Exploratory ❑ Development ❑ Service 2 • 14.Estimated Date for 15.Well Status after proposed work: Commencing Operations: Oil ❑ Gas ❑ WDSPL ❑ Suspended ❑ 16.Verbal Approval: Date: WINJ ❑ GINJ ❑ WAG Q • Abandoned ❑ Commission Representative: GSTOR ❑ SPLUG ❑ 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Denise Bailey Email Denise.BaileytBP.Com Printed Name Denise Bailey Title Production Engineer Signature Phone 564-4749 Date Prepared by Garry Catron 564-4424 ;i _, 5izapy COMMISSION USE ONLY J Conditions of approval: Notify Commission so that a representative may witness Sundry Number '1\ \- ..2' 31 Plug Integrity ❑ BOP Test ❑ Mechanical Integrity Test ❑ Location Clearance ❑ Other: RBDMS JUN 0 6 2014 Spacing Exception Required? Yes ❑ No Y Subsequent Form Required: ! 4o 4- APPROVED BY � Approved by: P ,, COMMISSIONER THE COMMISSION Date: — y_/ V 7 Form 10-403 Revised 10/2012 aRt( i> a�d for 12 months from the date of approval. Submit Form and Attachments in Duplicate VLF�/4/!+ H L ,Al' .3-7,01, .i - 5:3c-)./ O O O O UC') O (▪p co co co co C)) co Ur J J J J (n a) Q 0 0 0 0 0 0 N Cie _ CD CD OND O p Nr LO f� N N N- U O� s) M 8 M = CO N O Cr) m co N- co Nr co co c as Cn m O M coNco to cocoO In f- O) CD x_ 11.8 CC) 00 H 0 Q O N- CA CA O CD N LOCD N N CO C CI C7) N M N • 00 m " N C)) ta CD O O COm000r- `n � � = a O O N Co o_ • o 1- CA CA M CSD CN CD CD U O CN N6,7) op_ co, 0) N to a L O 000 00D CA 00 O 00 O JJ Cr) J N co'o CO N N co O N- *k CV N- N D N th c-.5 N D) M C N +. (D > CI m 000 C)) CN N ON) a) co) N N- O) J ccW Q CyC F-) 2 Q Q UpceccceW (LZ Z W W WWWE ZZDDD OU Z J J C/) (/) Perforation Attachment ADL0028282 Well Date Perf Code MD Top _ MD Base TVD Top TVD Base N-23A 2/28/97 PER 10570 10590 8665 8666 N-23A 2/28/97 PER 10730 10770 8675 8678 N-23A 2/28/97 PER 10870 - 10890 8685 8687 N-23A 2/28/97 PER 10990 11010 8692 8694 N-23A 2/28/97 PER 11310 11350 8708 8710 N-23A 2/28/97 PER 11490 11510 8716 8717 N-23A 2/28/97 PER 11630 11650 8726 8727 N-23A 2/28/97 PER 11690 11730 8729 8731 AB ABANDONED MIR MECHANICAL ISOLATED REMOVED APF ADD PERF MIS MECHANICAL ISOLATED BPP BRIDGE PLUG PULLED MLK MECHANICAL LEAK BPS BRIDGE PLUG SET OH OPEN HOLE FCO FILL CLEAN OUT STC STRADDLE PACK,CLOSED FIL FILL STO STRADDLE PACK, OPEN SQF SQUEEZE FAILED SPS SAND PLUG SET SQZ SQUEEZE SL SLOTTED LINER PER PERF SPR SAND PLUG REMOVED RPF REPERF Packers and SSV's Attachment ADL0028282 Well Facility Type MD Top_ Description ND Top N-23A PACKER 9511 4-1/2"TIW HBBP Packer 8116 N-23A - PACKER 9570 7" Baker ZXP Top Packer 8165 N-23A PACKER 9580 7" Baker ZXP PKR/HGR 8173 TREE= 6"CM/ WELLF1EAD= MCEVOY N -23A SAP OTES:H2S READINGS AVERAGE 125 ppm ACTUATOR'= BAKER C WHEN_.4 MI.WELL ANGLE>70°@ 10177' COMPOSITE KB. ELEV= 74 6T WRAP REPAIR SH LEAK-DO NOT MIT-OA OVER 1200 PSI BF ELEV= 43.94' DUE TO DESIGNED PRESSURE RATING OF REPAIR&DO KOP= 1900 NOT PUMP MET1-V METH BLEMD INTO OA DUE TO CHEM Max Angle= 94° 10276 INCOMPATIBILITY w/EPDXY RESIN"'DURING COMPLETION, I T'U4S THREADS MCEVOY TBG HGR NECK WERE GALLDED Datum MD= 12039' TRYING TO BACK OUT THE LANDING JT. Datum TVD= 8800'SS 2227' C 41/2"HES X NIP,ID=3.813" _ 13-3/8"CSG,72#,S-95/L-80,ID=12.34711H 2767' I ' 9501' —14-1/2"HES X NIP,ID=3.813" Z9512' —9-5/8"X 4-1/2"TW HBBP PKR ID=3 949" I Minimum ID = 3.725" @ 9558' 4-1/2" HES XN NIPPLE I I 9536' H4-12"HES X NIP,ID=3.813" 9558' —14-12"HES XN NIP,ID=3.725" 9564' H9-5/8"X 7"BKR ZXP LW w/6'TIEBK SLV TOP OFT'TIEBACK LNR H 9564' / 9570' H4-1/7'WLEG, ID=3.958" 4-12"TBG,12.6#, L-80, .0152 bpf, ID=3.958" H 9570' 1/ \— 9572' H ELM)TT LOGGED 0822/99 9594' H9-5/8"X 7"HMC BKR ZXP LTPw I HGR TOP OF T TIEBACK LNR --` 9594' TOP OF 4-12"LNR H 9600' 1-- 9600' --IT'X 412"XO,ID=3.958" TOP OFT'LNR ---1 9733' I . 9733' H9-5/fr X T'BOT HGR/PKR TIEBACK 9-5/8"CSG,47#,L-80,ID=8.681" H 10004' HAI , TOP OF WHIPSTOCK --1 ? 7"LNR 291,L-80 U4S, .0371 bpf,ID=6.184" —� 10072' MIL LOUT WINDOW(N-23A) 10043'-10072' PERFORATION SUMMARY REF LOG. SLB GR_DIL ON 02/19/97 'fes. ANGLE AT TOP PEW.89°@ 10570' _ Note:Refer to Production DB for historical perf data �� SIZE SPF INTERVAL Opn/Sqz DATE I♦N�4�1�/�4�4�/ 2-3/4" 4 10570-10590 0 0228/97 ��������� 2-3/4" 4 10730- 10770 0 0228/97 2-3/4" 4 10870- 10890 0 0228/97 2-3/4" 4 10990- 11010 0 02/28/97 2-3/4" 4 11310-11350 0 02/28/97 �;` 2-3/4" 4 11490- 11510 0 02/28/97 PBTD 11740' va``;;;; 2-3/4" 4 11630- 11650 0 02/28/97 \`` 2-3/4" 4 11690- 11730 0 02/28/97 �;�;;;`;• 4-1/2"LNR, 12.61, L-80, H 11795' ��`;ll'. .0152 bpf, ID=3.953" TD —I 11852' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY WIT 08125187 N18E ORIGINAL COMPLETION 09/23/10 PJC SAFETY NOTE UPDATE WELL: N-23A 07124/90 N1 ES I#JO 03/09/11 TQ/PJC SFTY NOTE(COMPOSITE WRAP) PERMIT No:'1970120 02/27/97 N18E SIDETRACK(N-23A) 04/29/11 PJP/PJC PERF REF LOG UPDATE API No. 50-029-21725-01 10/16/09 CSR/PJC TD DEPTH CORRECTION 01/18/12 TM IJMD ADDED H2S SAFETY NOTE SEC 8, T11 N, R13E 2151'NSL&568'EWL 10/18/09 ?/PJC DRAWING CORRECTIONS 05/14/12 TF'JMD TREE GO(05/11/12) 1027/09 TTW/SV SAFETY NOTE BP Exploration(Alaska) ALASKA WELL ACTIVITY STATEMENT OF REQUIREMENTS (V1.5,DBR,LHD,EAZ 04/11/14) General Information Well Name: N-23A Well Type: WAG Injection Well API Number: 50-029-21725-01 Well Activity Conventional 4 Classification: Activity Description: Set Patch over set of Perforations Cost Code/AFE: Field/Reservoir: PRUDHOE IVISHAK 12 Month Avg IOR, bopd: Job Type: Profile Modification Estimated Cost, $M: / Other regulatory AWGRS Job Scope: PATCH TUBING/LINER None requirements? Sundry Form 10-403 Required? Yes Sundry Form 10-404 Required? Yes Primary Secondary Engineer: Denise Bailey Contact numbers: (907)564-4749 Well Intervention Michael Hibbert Contact numbers: (907)564-4351 Engineer: Lead Engineer: Lea Duong Contact numbers: (907)564-4840 Date Created: May 13,2014 Revisions(date,who,what changed): Current Well Status Information Gas Rate or Water Rate or FTP or Injection Date Oil Rate Injection Rate Gas Injection GOR Choke Setting Gas Lift Rate Pressure (bopd) (bwpd) Rate (scf/stbo) (MMscf/Day) (psi) (MMscf/Day) 4/22/2014 N/A 7,798 N/A N/A N/A N/A 626 Current Status: Operable If not operable or under evaluation, why? Recent H2S (date,ppm) 9/4/1999 30 ppm Maximum Deviation(angle and depth) 10,276'MD Datum depth,ft TVDss 8,800'TVDss Minimum ID and Depth 3.725'@ 9558'MD-4.5'HES XN Nipple Reservoir pressure(date, 8/17/1999 3,334 psi Reservoir temperature,F 172°F psig) Shut in wellhead pressure <2000 psi Known mechanical integrity problems N/A (specifics) Last downhole operation(tate, 11/24/2012: CTU IPROF&SBG operation) Most recent TD tag(date,depth, 11/23/2012: CTU-tagged at 11,642'ctmd with 2'JSN toolstring OD) Comments,well history, N-23A is an Ivishak injector that was sidetracked in 1997. Injection rates range from 2800-8000 bwpd over the background information, last year. An IPROF completed in November,2012 indicated that 90%of the injection was entering the etc: 10,730-70'MD perfs&10%of the injection was entering at 10,870-90'MD. The only previous(PROF in 1999 showed 100%of the injection entering the perforations from 10,730-70'MD. A removable patch will be placed across the perfs from 10,730-70'MD to allow injection into the other perforations,creating increase sweep. Based on the two IPROF's that showed almost all flow for history of well has been through this one set of perfs-will recommend that some MI slugs be injected into N-23A once the patch is set. A Furmanite wrap was installed on 9/23/2009 to repair a SH leak. This limits the pressure for an MIT-OA,but shouldn't impact the planned patch. Prior to setting the patch,a pro-active schmoo be gone will be jetted across the perfs during the coil drift to remove any gunk that has accumulated since the last SBG. The ID through the patch will be large enough to complete a future IPROF to determine new injection intervals. Well Intervention Details Suspected Well Problem: Inefficient sweep of the reservoir due to a suspected high perm.streak in one set of perfs. Specific Intervention or Well Objectives: 1 Cease injection into 10,730-70'MD perforations by placing retrievable patch across the perforations. V 2 Jet Schmoo Be Gone across perfs to clean out some of fill at bottom of well. 3 Key risks,critical issues: Mitigation plan: 1 patch set off depth Flag coil-use appropriate tie-in logs 2 Schmoo Be Gone left in wellbore Displace it into formation 3 Summary Service Line Activity Step# 1 S D&T to deviation with dummy KB packer of 3.70'OD D&T with JSN,pumping Schmoo B Gone across the perfs as per attached procedure. 2 Set retrievable patch across perfs located at 10,730-770'MD. C ** If issues running the dummy KB packer through the XN nipple located at 9558'MD,consider running a left 3 Detailed work scope(If no RP/SOP exists for the intervention type,a well-specific procedure is required in addition to the SOR): 1 C Refer to attached procedure for Schmoo Be Gone&the attached schematic for the patch installation. Refer to RP on Underreaming&Milling and on Setting Bridge Plugs&Packers 2 3 Performance Expectations(may be NA if no change anticipated due to the intervention) Expected Production BOPD: MMSCFD: BWPD: Rates: FTP(psi): Choke setting: Post job POP instructions: Put on injection as per target following job. Attachments- include in separate excel worksheets Required attachments: Current wellbore schematic As needed:Perf form,logging form,well test chart,annotated mini log,annotated log section,tubing/casing tallies,Wellhead info, etc Approvals Management Approval: Date: Wells Approval: Date: • TREE= 8"an/ VM3LHEAD= MCEVOY N-23A A A SAFETY NOTES:H28 READINGS AVERAGE 125 ppm ACTUATOR= BAKFRC L 3H WHEN ON ML WELL ANGLE 70'@ 10177 "COMPOSITE KB EL = 74 67' UE IN WRAP REPAIR SH LEAK-DO NOT MR-OA OVER 1200 PSI BF. B.E1 = 43.94' DTO OESIGEED PRESSURE RATING OF REPAIR&DO o_EvKOP= 1900' NOT PUMP MET-5 METH BLEWINTO OA DUE TO CHEM f'X •Max Angle= 94• 10276' OMPA TIBILITY w/EPDXY RESIN'•"DURING COMB.ETON, Datum MD= 12039' I 7"045 TI E/LA US MCEVOV IBC HON NECK WERE GALLUE:D TRYING TO BACK OUT THE LANDING JT Datum IVO= 8800'SS 2227' 1-1-4-1/2"t-ES X NIP ID=3.813"i 13-3/8"CSG.725,5-95/L-80,ID=12.347" I--f 2767' 9601' 1-i4-1/7'HES X NE,ID=3.813" i 9512' H9-5/8"X4-12"TM/HBBP PKRID 9J49" i Minimum ID=3.725"©9558' 4-1/2"HES XN NIPPLE I I 1 9536' I-i4-12"HES XNIP,ID=3.813" �-- -12ES D= 1 9558' I 4 "HXN NE, 3.725" 1 r LTP 6'TIEBK SLV i TOPOF T TIEBACK LNR i--1 9564' .J�\ 9570' H412'WLEG ID 398' 14-12"TBG,12 65.L-80. 0152 bpf.ID=3 958' I-E 9570' I \- 9572'_J-J aMD TT LOGGED 0822/99 I L 9594'_9-5A8"X 7"HMC BKR ZXP LTPw/HGR I TOP OF 7^TIFRACK I.NR I--{_...9594 ,_[ I TOP OF 4-1/2'LNR I-I-9600'- -1, r 1`r I 9600'..__j-{7'X4-1/2'XO.ID=3� . I TOP or- i---I 9733' t-1111 ar----I 9733'.__1-19=5/8"XT'BOT HGWRCR TIEBACK I 19-5/8"CSG,475.L-80,ID=8_681"3-1......10004'---' Ilk [TOP OF WHIPSTOCK I I ? 7'LNR 295 L-801.145 0371 bpf,0-6.184" 10072' ..- MILLOUT WINDOW(N-23A) 0043' 100/? PERFORA HON SUMMARY REF LOG. SLB GR DIL ON 02/19/97 S ANGLE AT TOP PERF 89'a 10570' ,, Note-Refer to Roductlon DB for historical pert da!:r SEE SPF INTERVAL Opn/5qz DATE *1*1*1�1�1r1�1* , 2-3/4" 4 10570-10590 0 1 02/28/97 , 2-3/4" 4 10730-10770 O 0228/97 , 2-3/4" 4 10870-10890 O 0228/97 , 2-3/4' 4 10990-11010 0 02/28/97 2.3#4" 4 11310-11350 0 0228/97 A=` 2-3/4' 4 11490-11510 0 0228/97 E-P0 .J I I a=��ik L 11740' �....... 2-3/4" 4 11630-11650 O 0228/97 .r`-..r. 2-3/4" 4 1 1680-11730 O 0228/97 ............., a 1/7 NR 12 e3t1, -80 '--L-11795' "%Wm*. 01 b2 bp'.fl':•' /1713__. _.._ f.10_.-I-1 11852' _ DATE REV BY COMMENTS DATE 1 REV BY - COMMENTS PRUDHOE BAY UNIT 08/25/87 N18E ORIGINAL COMPLETION 0923/101 PJC SAFETY NOTE UPDATE J WELL N-23A 07124/90 N1E8 RWO 03/09/11 TO/PJC SF17 NOTE(COMRDSITE WRAP) PERMIT No 1970120 02/27/97 MISE SIDETRACK(N-23A) 04/29/11 PJPIPJC PERF REF LOG UPDATE AR No. 50-029-21725-01 10/16/09 CSR/PJC TD DEPTH CORRECTION 01/1 8/12 TMWJMO ADOED HRS SAFETY NOTE SEC B.T11 N,R13E.2151'NSL&568 EWL -._._ 10/18/09 ?/PJC DRAWING CORRECTIONS 05/14/12 TP/JMJ TREE GO(05/11/12) 1027/09 TTW/SV SAFETY NOTE BP Exploration(Alaska) i`'x Injector M i n i l og 11/23/2012 Last IPROF —1 Techlog Project PBU_GD Well: N-23A Author Laura J.Larson Scale: 1:2500 Date 2/25/2013 Elavaton 74.67 K 634412.81 SPLC Date Country USA Elevaton catum.KB V 5868056 28 conlplet.21 Uete.1991-02-28 000091 Feld Prudhoe Bay Total Depth 11852 Longitude.148 910261 Status State Alaska Coordna-u S,stem-.NAD27AFT Latitude:10.320661 Up11t BPx Company BPXA GR/BM= 1 2 o' 9E��801 Soo PE Info o V 3 —I GR TVDSS MD ,n TVD5.5 RF.S_DEP ol o. BEST.GR (FEET) (FEET) z I HEST.RDEEP 0 0 I:25I10 1:3500 1- 1- 0 API 200 a 1'i I 8450 0.2 MiMM --; - 8460-, - 8520- - - 15NA TSHA `___ - t _t_ 8560— 05118 TSHB -.._ - -10250 + 8590,-10500 �r z r.:. B6 . DD 1 - 2012 IPROF: 90°/0 Set ret ievable 10750 of inj. patch -cross ..?_ e610 : 2012!PROF: 10% 10,730 70' � l_>vY ::— . of inj. perfs ,y -11000- >>•-.,. TSHC - 8620-" ff _ 8630 -11250- _. • PERE j ! S } % 7.fin 8640 11500- IIIIIIII — ' '..t.--H ; 8/22/1999 IPROF 100% injection into Tagged at 11,642' mirr.- 10,730'-10,770' (CCL CTM 11/23/2012 PERF indicates may be shot at 10,755-795 , . III cia..... r JEWELRY LOG PooAcillon Olowfoomaic Somnok:s4,, We. , 2 Company BP EXPLORATION (ALASKA), INC. , I well N-23A1 i o) , co Field PRUDHOE BAY i < c County NORTH SLOPE State ALASKA I cii a — . Surface Loa!Con °WM" 2 w (75 2151' NSL & 568EWL Wombed( i cv -ca 't u) Step Rat* SEC 8 TWP 11N RGE 13E >t. Elm/on c._ permed Oaken MSL Elevaban 0.0 a K.B. 74.42 K .,...40-- 9 5 i Log Measured From R103 ELF. 43/4 8 tr. (3 65 API Seriai Writer 50-029-21725-01 GI 43.77' Ode Aug 2/,1999 Run Mr' iber P gib 11./40 . Der101 L09170 11/65' _ Bottom Logged howl 11.B50' Too Log kiterval 10.400' . •t Hate Sue NIA _ Type ' . Produced Water -- Max Recorded Terri) WA 155 ----- FIELD PRINT Time Wed Reedy 0830 Time Low On Roan 1G20 Eluipment Number DS 2 location Nix&save -- — Recorded By RA Richey I Wenessed By I Kirby Wait Borehole Record 'liking Record Rim Number Be : from _ To Size I 1 A/11 From To - ' 45* 1 12 8 surface WO casing •ecord- ' Size :./11- - oP ;..on 'Surface String 13 34" ..._ . 72 &ewe _ .. 2767 , Rd Stritig — 9 518* 47 &sface 10004 lUner 7" ' — ' 29 9733 - 10043 rimer — 4 1/2" ' '---- 12 8 9580 11/65 - Liner • _ , • ,osoo - 4 Ate■ _� " ; � _ - = 111111 4 -�r • r III r 1 1 ■iii ; I 1:4-7.-4.—__ - - == 4 4.11.1 ; • 0t!4iiiP t 4 • .pimin _ - --4.4-.4 i,f _ ._ - - ''' ELla' ' ' . 10700 MIN ...... , . i 1 1 ,_._.. ., --t--- . _ ! 1 t._ _ - Set patch across perfs ,-� 1 (10,730-10,770'MD) = . 11•11=1111111•111111111111111111111111.111•11=1111111•111111111111111111111111.7...11111C I I • 11111111011110111111111111111 - i r I .* MIN1 I�F-- _ IIIIIMININMMI i t t 7 ...'- ' i---- + t— -...--.T .�_ ,0800 _ ' I----f-- } — + _ .#, • r . Northern Solo tions,.. N-23 Local Knowledge for a +� ••+„ •,.,,•.,,, Extended Reach Multi-Trip Straddle Global Industry Trip 41 CT Set NSAK Ref:15465 • Well No.: N-23 Vendor: Drawn By:CWD FOR INFORMATION ONLY • Requested By: D.Bailey I Baker TT 05-14-14 Description OD ID Length 45-KB-Lower Straddle Packer 10775' Mechanical Set Pkr. 10785' •'J"Hydraulic Setting Tool 3.70" E 2.562" —6.03' Mid Element 4" GS"Snap Latch Receptacle Fishing Neck Up II WLEG Down 30K Shear Release MI III ■■ ..NOTE.. Middle element setting depth is critical for upper space out. Minimum setting depth is 10775'. Maximum setting depth is 10785' 111 I I ■ Total Length TW: The enclosed is conceptual for information only.All feasibility and dimensional data should be verified with the supplying vendor prior to installation, --- .-- Northern Soluhon5.,< ( N-23 Local Knowledge fora �•• ••� .<• ••••. Extended Reach Multi-Trip Straddle Global Industry Trip 42 CT Set -NSAK RPf Ic4f c nn`?xx { Well No.: N-23 Vendor: Drawn By:CWD FOR INFORMATION ONLY Requested By: D.Bailey Baker TT 05-14-14 Description OD ID Length Baker TT Snap Latch Receptacle 3.700" 2.92" —1.00' 4""GS"FNUpx3W'STL P j I BPXA Pup Joint 3.50" 2.992" —10' 3W'STL BxP 1 II BPXA I Pup Joint 3.50" 2.992" —10' 3W"STL BxP I BPXA Pup Joint 3.50" 2.992" —10' 3Ji"STL BxP j i ME ay Collapsed� CoKed Baker Snap Latch Stinger r_�� 13CR.-3',,STL Box With 3"Seal 3.50" 2.375" 2.15' � X-1032 Brass shear screws i ' y #Shear up Total Length TW The enclosed is conceptual for information only.All feasibility and dimensional data should be verified with the . i 1 supplying vendor prior to installation. it • N 23 j LocaloKnowledge for a Northern Solutions., ! GtobatIndustr Extended Reach Multi-Trip Straddle 1 y Trip#3 CT Set dtiAx Well No.: N-23 Vendor: Drawn By:CWD FOR INFORMATION ONLY • Requested By: D.Bailey Baker TT 05-14-14 Description OD ID Length I, H ! -10724' j Mid Element 1111 ! ■. 45-KB"Upper Straddle Packer ; "Hydraulic Set Hybrid" 4"GS Fishing Neck Up 3.70" 2.562" j 5.03" 3 1/2"STL Pin Down 30K Shear Release Upper KB roil be Baker Hydraulic Set Hybrid using Baker"GH-Running Tool —, BPXA 3.50" 2.992" –9-10' 3':'STL Pup Joint II BPXA 3.50" 2.992" –9-10' 3'_"STL Pup Joint • I .80' aIMM Coiiapsed Baker Snap Latch Stinger i I / 13CR.-3':STL Box 1With 3"Seal 3.50" 2.375" 2.15' I X-10132 Brass shear screws a. x.02 #Shear up l 11-1-i Total Length TW: i The enclosed is conceptual for information only.All feasibility and dimensional data sn- Jo Le verified with the supplying vendor prior to installation. • i Schmoo Be Gone Procedure Slickline 1. SL- D&T with 45 KB packer to deviation. Coil 1. MU toolstring with GR/CCL in carrier&3.70"JSN. D&T to TD. Then pump Schmoo Be Gone from TD to top perf as per schedule below (max.treating pressure is 1500 psi): Fluid Depth Volume (bbls) Notes Schmoo Be Gone (SBG) 10,570' MD-tag depth 75 Jet across perfs 10,500' MD - Let SBG soak for 3 hours 1% KCI 10,500' MD 19 Push SBG into formation 10,500' MD - Let SBG soak for 3 hours 1% KCI 10,570' MD - TD 50 Jet across perfs to overflush SBG Coil 2. POOH to 10,700'&flag coil. 3. Set bottom packer @ 10,780'MD**Verify all depths, lengths of tools&tie-in log due to a+1-5'set depth restriction. 4. Run middle&top patch sections. Refer to patch schematics for additional detail. • • MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE: Monday,October 07,2013 TO: Jim Regg P.I.Supervisor I i I 017/13 SUBJECT: Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC N-23A FROM: Jeff Jones PRUDHOE BAY UNIT N-23A Petroleum Inspector Src: Inspector Reviewed By: P.I.Supry�J�'P NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UNIT N-23A API Well Number 50-029-21725-01-00 Inspector Name: JeffJones Permit Number: 197-012-0 Inspection Date: 9/20/2013 Insp Num: mit11130924210455 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well Type Inj TVD 1 IA N-23A W 8117 14 2500 2467 - 1 2459 PTD I 1970120 — ,Type Test SPT;Test psi 2029 OA 234 • ( 528 . 528 ' , 524 - Interval � P/F r 4YRTST 1 P Tubing f 407 - 407 - 410 ! 410 Notes: 1 well inspected,no exceptions noted. , i `,n SCANNED 1J I Monday,October 07,2013 Page 1 of 1 • • Mot N - z3 A P7t 1 /7Ot z� Regg, James B (DOA) From: AK, OPS FF Well Ops Comp Rep [AKOPSFFWeIlOpsCompRep @bp.com] Sent: Friday, May 24, 2013 9:04 AM eee 6/z-4( 1; To: Regg, B (DOA); DOA AOGCC Prudhoe Bay 99. ( ) Y Cc: Redmond, Randy; AK, OPS GC2 Wellpad Lead; AK, OPS GC2 OSM; AK, D &C Well Integrity Coordinator; Daniel, Ryan; Bill, Michael L (ASRC); AK, OPS GC2 Field O &M TL; Starck, Jennifer L; AK, RES GPB West Wells Opt Engr; Hamilton, Gary N Subject: RE: FYI: BPXA PBU Low PSI H2O Injector SVS Defeat - M & N Pad Dear Mr. Regg, As of 5/24/13, N -23A, N -03, M -14, and M -28 SVSs have been returned to normal service. Please contact me with any questions. Thank you, Ryan Hayes (Alt. Lee Hulme) FF Well Ops Compliance Rep SCANNED MAY 3 0 2013 BP Exploration (Alaska) Inc. PBOC - B103 Office: (907) 659 -5332 Cell: (907) 350 -2473 Harmony - 7187 From: AK, OPS FF Well Ops Comp Rep Sent: Thursday, May 23, 2013 9:58 AM To: Regg, James B (DOA); aogcc.inspectors@alaska.gov Cc: Redmond, Randy; AK, OPS GC2 Wellpad Lead; AK, OPS GC2 OSM; AK, D &C Well Integrity Coordinator; Daniel, Ryan; Bill, Michael L (ASRC); AK, OPS GC2 Field O &M TL; Starck, Jennifer L; AK, RES GPB West Wells Opt Engr; Hamilton, Gary N Subject: FYI: BPXA PBU Low PSI H2O Injector SVS Defeat - M & N Pad Dear Mr. Regg, Per AOGCC waiver dated 3/11/13, PBU Oil Pool Low Pressure Water Injectors, BPXA is providing notification that wells N -23A (permit #1970120), N -03 (permit #1700620), M -14 (permit #1801090), and M -28 (permit #1860740) are now operating with their SVS defeated as of 5/23/13. Per the wavier, BPXA has tagged and logged the defeated components, and will notify AOGCC once the SVS is returned to service. Please contact me with any questions. Thank you, Ryan Hayes (Alt. Lee Hulme) FF Well Ops Compliance Rep BP Exploration (Alaska) Inc. PBOC - B103 Office: (907) 659 -5332 Cell: (907) 350 -2473 Harmony - 7187 1 1 N - VVA 1 t'Zz% Regg, James B (DOA) From: AK, OPS FF Well Ops Comp Rep [AKOPSFFWellOpsCompRep @bp.com] Sent: Thursday, May 23, 2013 9:58 AM Q 5(Z To: Regg, James B (DOA); DOA AOGCC Prudhoe Bay ( / Cc: Redmond, Randy; AK, OPS GC2 Wellpad Lead; AK, OPS GC2 OSM; AK, D &C Well Integrity Coordinator; Daniel, Ryan; Bill, Michael L (ASRC); AK, OPS GC2 Field O &M TL; Starck, Jennifer L; AK, RES GPB West Wells Opt Engr; Hamilton, Gary N Subject: FYI: BPXA PBU Low PSI H2O Injector SVS Defeat - M & N Pad Dear Mr. Regg, Per AOGCC waiver dated 3/11/13, PBU Oil Pool Low Pressure Water Injectors, B PXA is providing notification that wells N -23A (permit #1970120), N -03 (permit #1700620), M -14 (permit #1801090), and M -28 (permit #1860740) are now operating with their SVS defeated as of 5/23/13. Per the wavier, BPXA has tagged and logged the defeated components, and will notify AOGCC once the SVS is returned to service. Please contact me with any questions. Thank you, SCANNED MAY 31 2013 Ryan Hayes (Alt. Lee Hulme) FF Well Ops Compliance Rep BP Exploration (Alaska) Inc. PBOC - B103 Office: (907) 659 -5332 Cell: (907) 350 -2473 Harmony - 7187 1 . MEMORANDUM To: Jim Regg ~~ ~ P.I.Supervisor ~(c( ~~~r5'~ ~ FROM: Chuck Scheve Petroleum Inspector State of Alaska • Alaska Oil and Gas Conservation Commission DATE: Thursday, October 15, 2009 SUBJECT: Mechanical Integrity Tests BP EXPLORATION (ALASKA) INC N-23A PRUDHOE BAY UNIT N-23A Src: Inspector NON-CONFIDENTIAL Reviewed By: P.I. Suprv ~~~(~-'_- Comm Well Name: PRUDHOE BAY iJNIT N-23A API Well Number: 50-029-21725-01-00 Inspector Name: Chuck Scheve Insp Num: mitCS091013085628 Permit Number: 197-012-0 Inspection Date: 10/11/2009 Rel Insp Num: Packer Depth Pretest Initial 15 Min. 30 Min. 45 Min. 60 Min. Well N-z3^ ~ Type Inj. ~ W ~ ~811 ~ IA~ 3io zsoo zaso ~zaso P.T. ---~ ~012 ---- 1 YPeTes~sPT ---_1- ~Test psi i - zo29 ~; -- pA zso aso aso aao a~TST p~F P .i Interval Tubing j g~o ~ sso ~ sso sso _ _ Notes: ~~_.d~;~~~~~ ~~'y~ ~ ~~ ~~~~ Thursday, October 15, 2009 Page I of 1 ~ STATE OF ALASKA ~ ALAS IL AND GAS CONSERVATION COMMIS REPORT OF SUNDRY WELL OPERATIONS 1. Operations Abandon ~ Repair Well ~ Plug Pertorations ~ Stimulate~ Other ~ '~ SH REPAIR Performed: Alter Casing ~ Pull Tubing ~ Perforate New Pool ~ Waiver~ Time Extension ~ FURMANITE Change Approved Program ~ Operat. Shutdown ~ Perforate ~ Re ' ter Suspended Well ~ WRqp 2. Operator BP Exploration (Alaska), Inc. 4. Well Class Before Work: 5, Permit to Drill Number: Name: Development ^ Exploratory ' 197-0120 3. Address: P.O. Box 196612 Stratigraphic^ Service ^~ API Number: Anchorage,AK 99519-6612 50-029-21725-01-00 8. Property Designation (Lease Number) : Well Name and Number: , ~ ADLO-028282 ~~~~~~~~ PBU N-23A 10. Field/Pool(s): PRUDHOE BAY FIELD / PRUDHOE BAY POOL Q~ T ~~ ZQ~~ 11. Present Well Condition Summary: ~laska Oil ~ Gas Cans. ~ummi Total Depth measure ~ 11852 feet Plugs (measured) None feet Anchorage true vertical ' 8737.76 feet Junk (measured) None feet Effective Depth measured 11740 feet Packer (measured) 9512' true vertical 8731 feet (true vertical) 8117' Casing Length Size MD TVD Burst Collapse Structural Conductor 110 20" Surface - 110 Surtace - 110 Surface 2769 13-3/8" 72# L-80 Surtace - 2769 Surface - 2688 4930 2670 Intermediate Production 10004 9-5/8" 47# L-80 Surface - 10004 Surface - 8530 6870 4760 Liner 280 7"26# L-80 9763 - 10043 8326 - 8562 7240 5410 Liner 2201 4-1/2" 12.6# L-80 9594 - 11795 8185 - 8734 8430 7500 Pertoration depth: Measured depth: SEE ATTACHMENT -_ _ _ _ True Vertical depth: _ _ _ _ _ Tubing: (size, grade, measured and true vertical depth) 4-1/2' 12.6# L-80 SURFACE - 9570' SURFACE - 9165' Packers and SSSV (type, measured and true verticai depth) 9-5/8"X4-1/2" TIW HBBP PKR 9512' ~ 8117' K P ~ 12. Stimulation or cement squeeze summary: Intervals treated (measured): ~~~;~9~~~ ~~1,~ ~~ ~~' ~ ~Utt.~3 Treatment descriptions including volumes used and finai pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing pressure Prior to well operation: 2853 1418 Subsequent to operation: 8268 904 14. Attachments: . Weli Class after work: Copies of Logs and Surveys Run Exploratory^ Development ^ Service ~ Daily Report of Well Operations X . Well Status after work: Oil Gas W DSPL GS~OR ^ WAG ~ GINJ ^ WINJ ^~ SPLUG ^ 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: N/A Contact Gary Preble Printed Name Gary Preb Title Data Management Engineer Signature ~ Phone 564-4944 Date 10/15/2009 Form 10-404 ~ised 7/2009 ~ ~~,~~"~~ ~r~ ~ ~~~ j ~ Submit Original Only ` l~'rG'o~ 510R N-23A 197-012 PFRF OTTOCHMENT • Sw Name Operation Date Perf Operation Code Meas Depth Top Meas Depth Base Tvd Depth Top Tvd Depth Base N-23A 2/28/97 PER 10,570. 10,590. 8,665.22 8,665.74 N-23A 2/28/97 PER 10,730. 10,770. 8,674.63 8,677.69 N-23A 2/28/97 PER 10,870. 10,890. 8,685.23 8,686.72 N-23A 2/28/97 PER 10,990. 11,010. 8,692.39 8,693.53 N-23A 2/28/97 PER 11,310. 11,350. 8,707.85 8,709.65 N-23A 2/28/97 PER 11,490. 11,510. 8,716.12 8,717.25 N-23A 2/28/97 PER 11,630. 11,650. 8,725.78 8,726.83 N-23A 2/28/97 PER 11,690. 11,730. 8,728.81 8,730.84 AB ABANDONED PER PERF APF ADD PERF RPF REPERF BPP BRIDGE PLUG P ULLED SL SLOTTED LINER BPS BRIDGE PLUG SET SPR SAND PLUG REMOVED FCO FILL CLEAN OUT SPS SAND PLUG SET FIL FILL SQF SQUEEZE FAILED MIR MECHANICAL ISOLATED REMOVED SQZ SQUEEZE MIS MECHANICAL ISOLATED STC STRADDLE PACK, CLOSED MLK MECHANICAL LEAK STO STRADDLE PACK, OPEN OH OPEN HOLE • • • N-23A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY ~ W~ ~ U • ~ 9/22/2009 T/I/O = VACNAC/0. Temp= SI. Assist w/ Furmanite wrap. Keep open bleed on ~' ~ OA. No change in WHPs. Temp in WH=105 degrees. Held open bleed on OA w/ ; j no fluid or noticable gas returns. Furmanite crew removed outer protective layer of ' ~ wrap. Performed BUR on OAP (see log) for 5 hrs w/ OAP increase of 2 psi. Bled ~ ; OAP to 0 psi in 2 min. Monitor 30 min. OAP inchanged. Final WHPs=VAC/VAC/0. ~ ~WV=Closed. SV,SSV,MV=Open. IA,OA=OTG. NOVP. a i , l i E 1 ~ ~ ._ I ~ ~ ~ ~ 9/23/2009 T/I/O=VAC/VAC/3. Temp= SI. WHP's, if needed bleed OA to 0 psi (furmanite ~wrap). Flagged open cellar. No leaks visible from SH. Bled OAP from 3 psi to 0 ~ psi in 20 seconds. Heater is working. j ( F ~ SV,WV=C. MV,SSV=O. IA,OA=OTG. NOVP. t ! ~ ~ ~ I ~ 9/23/2009 1 i ~ TIO=vac/vac/2. SI. Monitor WHPs post Furmanite wrap. No AL line. Integral # installed on IA. On 9-22-09 @ 2130 hrs bled OAP to 0 psi in < 2 mins, monitor for ~ ~ 30 mins with no change in OAP. Final WHPs=vac/vac/0 1 ~ i ~ 1 } ~ ~ I ~ SV,WV=C. SSV,MV=O. IA,OA=OTG. NOVP ~ j ~ 9/24/2009 T/I/O=Vac/Vac/4. Temp=Sl. WHP's, if needed bleed OA to 0 psi (Furmanite wrap). ; Bled OAP from 4 psi to 0 psi in 30 secs (all gas). No visible leaks on SH. Heater is ~ working properly. ~ ~ ~ i [ ~ I I SV, WV=C. SSV, MV=O. IA, OA=OTG. NOVP. ~ ~ ~ ~ 9/24/2009 TIO=vac/vac/3. SI. WHP's, if needed bleed OA to 0 psi (furmanite wrap). OAP increased 3 psi, bled OAP to 0 psi < 1min @ 2130 hrs (9-23-09). Final ~ W HPs=vac/vac/0 ~ ~ ~ ~ SV,WV=C. MV,SSV=O. IA,OA=OTG. NOVP. ~ ~ ~ ~ 3 ~ ~. __..~ ~ __ ' ~ ~ _ __ ___ __._... ~. ~__ _._. ____--- --_- ~ ~ • 9/24/2009 T/I/O=Vac/Vac/5. Temp=Sl. WHPs, if needed bleed OAP to 0 psi (Furmanite ~ wrap). Bled OAP from 5 psi to 0 psi in 45 seconds (gas). No audible or visible signs of an SC leak. Heater installed & working properly ~ ~ i ~ SV, WV=Closed. SSV, MV=Open. IA & OA=OTG. NOVP. ~ ~ 3 ;j ] j 1 ~ ~__.__ ~.._ __ ~ 3 3 i j I .~.~ _ _ ~ ~ ` 9/25/2009 ~T/I/O=Vac/Vac/4. Temp=Sl. Monitor , if needed bleed OA to 0 psi (Furmanite ; ~ wrap). IA companion valve has integral installed. Bled OAP to 0 psi in 45 sec (all ~ ~ gas) @ 07:45 am. No audible or visable signs of leaking of Furmanite wrap. ? 3 Heater installed & working properly. [ i E ~ 1 ~~~ 1SV, WV=Closed. SSV, MV=Open. IA&OA=OTG. NOVP. ~ ~ ~ 9/26/2009i T/I/O = VacNac/5. Temp = SI. WHP's, if needed bleed OA to 0 psi (Furmanite ~ ~ wrap). 2" integral installed on IA. Bled OA from 5 psi to 0 psi in 1 min (all gas) @, ~ 08:20 am. No leaks detected on Furmanite wrap. Heater is working properly. ~ ~ ~ ~ ~ SV, WV = C. SSV, MV = O. IA, OA = OTG. NOVP. ~ ~ ~ i ~ ~ ~ ~ I I 9/26/2009 TIO=vac/vac/4. SI. WHP's, if needed bleed OA to 0 psi (furmanite wrap). OAP ~ increased 4 psi, bled OAP to 0 psi < 1 min @ 2130 hrs (9-25-09) ; , ~ 3 ~ I SV,WV=C. MV,SSV=O. IA,OA=OTG. NOVP. ~ ~ ~ 9/27/2009 ~ ~ T10=vac/vac/4. SI. WHP's, if needed bleed OA to 0 psi (furmanite wrap). OAP increased 4 psi, bled OAP to 0 psi < 1min @ 2230 hrs (9-26-09) . ~ SV,WV=C. MV,SSV=O. IA,OA=OTG. NOVP. 9/27/2009 ~ T/I/O = Vac/Vac/5. Temp = SI. WHP's, if needed bleed OA to 0 psi (Furmanite ? ~ wrap). 2" integral installed on IA. Bled OA from 5 psi to 0 psi in 1 min (all gas) @ j ~ 08:20 am. No leaks detected on Furmanite wra Heater is workin ro erl P• 9 P P Y• j i.~._._._..__~ SV, WV = C. SSV, MV = O. IA, OA = OTG. NOVP. s ______~..._ _ 4 ~ ~ ~~~ 10/4/2009 T/I/0=vac/vac/0 Temp=Sl MIT OA 1200 psi "`PASS*" (Eval SH Leak) Pumped 4.1 ~ ~bbls crude down OA to reach test pressure. 1st 15 min lost 40 psi, 2nd 15 min lost ~ ; 10 psi for a total of 50 psi in 30 min. No indications of leaks around Furmanite ~ ~ wra Bled back -2 bbls. Tags hung on , . a ve positions upon ~ dep ure:SV,WV=closed;SSV,MV,lA,OA=open, operator notified. ~ ~ FW H P's=vac/vac/0 ; ---- -- ~ 10/11/2009 T/I/0= 870/230/310. Temp= Hot AOGCC MIT-IA PASSED to 2500 psi (Witness by , ``_; Chuck Scheve) Pressured up IA to 2500 psi w/ 5.1 bbls 60/40 Meth water. MIT-IA ~ ~ lost 50 psi in 1 st 15 mins and 0 psi in 2nd 15 mins w/ a total loss of 50 psi over 30 ~ ; min test. Bled IAP down. Bled back 3.5 bbls. FWHP's= 880/300/260 "**Annulus ~ ~ casing valves tagged and left open to gauges upon departure.**'` Well left on ~ injection. ~ ~ FLUIDS PUMPED BBLS 5.1 60/40 METH 5.1 TOTAL Tr~F = a^ r.nni W~LFEAD= MCEVOY ACTUATOR = OTIS KB. ELEV = 74.6T BF. ELEV = 43.94' KOP = 1900' Max Angle = 94 @ 10276' Datu m MD = 12039' Datum ND = 8800' SS 13-3/8" CSG, 72#, L-80, ID =12.347" H 276T Minimum ID = 3.725" @ 9558' 4-1/2" HES XN NIPPLE TOP OF 7^ lNR H 9564' 4-1/2" TBG, 12.6ff, L-80, .0152 bpf, ID= 3.958" f--~ 9570' ITOPOF4-1/2"LN2 ~ 35/8" (SG, 47#, L-80, ID= 8.681" H 10004' FERFOR4110N SUVIMARY REF LOG: ~ ON ~ ANGLE AT TOP PERF: 89 @ 10570' Note: Refer to Production DB for h'storical perf data SIZE SPF INTff2VAL O/ z DATE 2-3/4" 4 10570 - 10590 O OZ/28/97 2-3/4" 4 10730 - 10770 O 02/28/97 2-3/4" 4 10870 - 10890 O 02/28/97 2-3/4" 4 10990 - 11010 O 02/28/97 2-3/4" 4 11310 - 11350 O 02/28/97 2-3/4" 4 11490 - 11510 O 02/28/97 2-3/4" 4 11630 - 11650 O 02/28/97 2-3/4" 4 11690 - 11730 O 02/28/97 TOPOFWHIPSTOCK ? \ TOP oF CEMB~lT 10008' BRDGEPLUG 10063' 7" LNF~ 231~ L 80 0371 b f ID= 6 184" 10848' , - , . , p . 4-1/2" LNI~ 12.6#, L-80, .0152 bpf,10 = 3.953" 4-1/2" HES XNIP, ID= 3.813" 9501' H4-1/2" H6 X NIP, ID= 3.813" 9512' ~ 9-5/8" X 41 /2" TNV HBBP FlCR, ID = 3.949" 9536' 9558' 4-1/2" H6 X NIP, ID= 3.813" 4-1 /2" HES XN NIP, D= 3.725" 9564' H9-5/8"X7"BKRZXPPKR/TIEBACKSLV 9570' ~4-1/2" WLEG, ID= 3.958" I 9572' ELMDTTLOGG~08/22/99 9580' TI~ACK SEAL ASSY, ID = 6.276" I 9580' H9-5/8"XT'BKRZXPPI4Z/11EBACKSLV ssoo~ }1~°x a-,iz° xo ~ 9733' 9-5/8" X 7" BOT HGRIPI~ l1EBA pC MLLWTWIMOW 10043'- 10072' ~T~ H 11740' C1ATE REV BY COMNENTS DATE REV BY COMIvENTS OS/25/87 OPoGNAL COMPLETION 02128/97 SIDEfRACKCOMPLETION 03/08/02 RN/TP CORRECTIONS 08/16/03 CMO/1LP KB ELEVATION CORRECTION N 2 3A SAFETY NOTES: DURNG COM PLETION, 7" IJ4S ~ THREADS IN THE MCEVOY TBG HGR NECK W ERE GALLDED TRYING TO BAq( OUT THE LANDWG JT. 70° @ 10777' & 90° @ 10243' PRUDHOEBAY UVff WELL: N-23A P6~MT No: 1970120 API No: 50-029-2172~01 S~ 8, T11 N, R13E, 2151' NSL & 568' EWL BP E~loration (Alaska) OPERABLE: N-23A (PTD #197Q20) Starting Head Leak Mitigated wit~urmanite Wrap Page 1 of 2 ~ Regg, James B (DOA) From: NSU, ADW Well Integrity Engineer (NSUADWWeIIlntegrityEngineer@BP.com] ~ Sent: Sunday, October 04, 2009 10:43 AM ~`~'~ ~l ~ j~'~ To: GPB, Area Mgr West (GC2/WRD); GPB, GC2 OTL; GPB, GC2 Wellpad Lead; GPB, Well Pad MN; Rossberg, R Steven; Engel, Harry R; NSU, ADW Well Operations Supervisor; GPB, Optimization Engr; GPB, Wells Opt Eng; Starck, Jennifer ~; Regg, James B(DOA); Maunder, Thomas E(DOA); Schwartz, Guy L (DOA) Cc: Winslow, Jack L.; NSU, ADW Well Integrity Engineer; Murphy, Gerald L; Preble, Gary B(SAIC) Subject: OPERABLE: N-23A (PTD #1970120) Starting Head Leak Mitigated with Furmanite Wrap All, 1 ~ti-~ Well N-23A (PTD #1970120) has had the startinc~head wr~ped with Furmanite Composite, miti~ating the startinghead leak. The well passed an MITOA to 1200 psi post_wrap with no indications ofi leaks around the wrap. The e as been reclassified as Operable and may be returned to injection. The AOGCC UIC MITIA wiil be ~~ conducted once the well is online and thermally stable. Please let us know if there are any questions. Thank you, Anna ~Du6e, ~~. talt Torin Roschinger) Weli Integrity Coordinatar GPB Vlfells Group . ~~~'~ ~t ~ ~ ~~~~' ~r~#~~~~ Phone: {907) 659-5102 Pag~r: (907) 659-5~l00 x1°!54 From: NSU, ADW Well Integrity Engineer Sent: Tuesday, September 15, 2009 9:03 AM ~ To: GPB, Area Mgr West (GC2/WRD); GPB, GC2 OTL; GPB, GC2 Wellpad Lead; GPB, Well Pad MN; Rossberg, R Steven; Engel, Harry R; NSU, ADW Well Operations Supervisor; GPB, Optimization Engr; GPB, Wells Opt Eng; Starck, Jennifer L; 'Regg, James B(DOA)'; 'Maunder, Thomas E(DOA)'; Schwartz, Guy (DOA) <guy.schwartz@alaska.gov> Cc: Williams, Carrie Subject: NOT OPERABLE: N-23A (PTD #1970120) Starting Head Leak Confirmed AI I, Well N-23A (PTD #1970120) has been confirmed to have a Starting Head leak to atmosphere as evidenced by a small amount of hydrocarbon seeping from the surface casing. The well has been reclassified as Not Operable. The well has been shut-in and freeze protected and will remain so until remedial work is complete. Please let me know if there are any questions. Thank you, Torin Roschinger (alt. Anna Dube) Well Integrity Coordinator Office (907) 659-5102 Cell (406) 570-9630 11 /4/2009 OPERABLE: N-23A (PTD #19~20) Starting Head Leak Mitigated wit~urmanite Wrap Page 2 of 2 Pager (907) 659-5100 Ext. 1154 11 /4/2009 PBU N-23A PTD 1970120 9/5/2009 TIO Pressures a,~oa 3,000 ~1~- Tbg ^ IA 2,000 --~ OA ODA -~-- OOOA 1.000 #~ a~ . . ~ ~ On 06I06l09 06I13l09 06120f09 a6l27109 07i04109 Orl11I09 O1118109 07125109 fl8l~1109 08108l09 08r'15109 OSr2~t09 08I29?tJ9 r ~ TREE = 6" CIW W~LHEAD = MCEVOY A CTUATOR = OTIS KB. ELEV = 74.67' BF. ELEV = 43.94' KOP = 1900' Max Angle = 94 @ 10276' DatumMD= 12039' Datum ND = 8800' SS 13-3/8" CSG, 72#, L-80, ID= 12.347" ~-{ 2767' Minimum ID = 3.725" @ 9558' 4-1/2" HES XN NIPPLE I TOP OF 7" LNR H 9564' 4-1/2" TBG, 12.6#, L-80, .0152 bpf, ID= 3.958" 9570' OF4-1/2" LNR H 9600' 9-5/8" CSG, 47#, L-80, ID= 8.681" ~-{ ~D~QeI' PERFORA~ION SUMMARY REF LOG: ~ ON ~ ANGLE AT TOP PERF: 89 @ 10570' Note: Refer to Production DB for h'storical perf data SIZE SPF INT9~VAL O n/ z DATE 23/4" 4 10570 - 10590 O 02/28/97 2-3/4" 4 10730 - 10770 O 02/28/97 23/4" 4 10870 - 10890 O 02/28/97 2-3/4" 4 10990 - 11010 O 02/28/97 2-3/4" 4 11310 - 11350 O 02/28/97 2-3/4" 4 11490 - 11510 O 02/28/97 2-3/4" 4 11630 - 11650 O 02/28/97 2-3/4" 4 11690 - 11730 0 02/28/97 TOPOFWHIPSTOCK ? ~ TOP OF CEMBVT 10008' BRDGEPLUG 10063' 80 7" LN 29~ L 0 ID 84" ~ , . , - 371 bpf, = 6.1 R 10848 4-1/2" LNR, 12.6#, L-80, .0152 bpf, ID = 3.953" 9501' -j 4-1 /2" HES X NIP, ID = 3.813" I 9512' 9-5/8" X 4-1 /2" T1W HBBP PKR, ID = 3.949" 9536~ 4-1/2" HES X NIP, ID= 3.813" 9558~ 4-1 /2" HES XN NIP, D= 3.725" 9564' 9-5/8"X 7" BKRZXPPKR/~IEBACKSLV 9570~ 4-1 /2" WLEG, ID = 3.958" 9572' ELMD TT LOGG~ 08/22/99 9580' TI~ACK SEAL ASSY, ID = 6.276" ~5$0' 9-5/8"X T' BKRZXPPKR/l1EBACKSLV 9600' 7" X 41 /7' XO 9733~ 9-5/8" X T' BOT HGRIPKR 11EBAqt MLLOUT WINDOW 10043' - 10072' ParD H 11740' Ll4TE REV BY COMNENTS DATE REV BY COMMEfVTS 08/25/87 ORIGINAL COMPLEfION 02128/97 SIDEfRACKCOMPLETION 03/08/02 RN/1P CORRECl10NS 08/16/03 CN10/1L P KB ELEVATION CARRECTION PRUDHOE BAY UNIT WELL: N-23A PffZIVYT No: 1970120 API No: 50-029-21725-01 SEC 8, T11 N, R13E, 2151' NSL & 568' EWL BP Exploration (Alas ka) N 23A SAFENNOTES: DURINGCOMPLETION,7"IJ4S ~ THREADS IN THE MCEVOY TBG HGR NECK W ERE GALLDED TRYING TO BACK OUT THE LANDING JT. 70° @ 10177' & 90° @ 10243' 222T 4-1/2" HES X NIP, ID= 3.813" NOT OPERABLE: N-23A (PT~ 970120) Starting Head Leak Confirm~ Page 1 of 1 Maunder, Thomas E (DOA) From: NSU, ADW Well Integrity Engineer [NSUADWWeIIlntegrityEngineer@BP.com] Sent: Tuesday, September 15, 2009 9:03 AM To: GPB, Area Mgr West (GC2/WRD); GPB, GC2 OTL; GPB, GC2 Wellpad Lead; GPB, Well Pad MN; Rossberg, R Steven; Engel, Harry R; NSU, ADW Well Operations Supervisor; GPB, Optimization Engr; GPB, Welis Opt Eng; Starck, Jennifer L; Regg, James B(DOA); Maunder, Thomas E(DOA); Schwartz, Guy L (DOA) Cc: Williams, Carrie Subject: NOT OPERABLE: N-23A (PTD #1970120) Starting Head Leak Confirmed All, Well N-23A (PTD #1970120) has been confirmed to have a Starting Head leak to atmosphere as evidenced by a small amount of hydrocarbon seeping from the surface casing. The well has been reclassified as Not Operable. The well has been shut-in and freeze protected and will remain so until remedial work is complete. Please let me know if there are any questions. Thank you, Torin Roschinger (alt. Anna Dube) Weit Integrity Coordinator Office (907) 659-5102 Cell (406) 570-9630 Pager (907) 659-5100 Ext. 1154 _ ~° rJ ~ ~ p k, . _ ~ . ~ :.,.r _~' ~. f ~ ki.: 9/15/2009 LTNDER EVALUATION: N-23~TD #1970120) Possible Starting Hea~eak Page 1 of~~ Maunder, Thomas E (DOA) From: NSU, ADW Well Integrity Engineer [NSUADWWeIIlntegrityEngineer@BP.com] Sent: Saturday, September 05, 2009 8:57 AM To: GPB, Area Mgr West (GC2/WRD); GPB, GC2 OTL; GPB, GC2 Wellpad Lead; GPB, Well Pad MN; Rossberg, R Steven; Engel, Harry R; NSU, ADW Weil Operations Supervisor; GPB, Optimization Engr; GPB, Wells Opt Eng; Starck, Jennifer L; Regg, James B(DOA); Maunder, Thomas E(DOA); Schwartz, Guy L(DOA) Cc: NSU, ADW Well Integrity Engineer; Murphy, Gerald L; Williams, Carrie Subject: UNDER EVALUATION: N-23A (PTD #1970120) Possible Starting Head Leak Attachments: N-23A TIO Plot.doc; N-23A.pdf AI I, Well N-23A (PTD #1970120) has been reported to have a possible starting head leak. A UT analysis and MITOA with nitrogen are planned. The well has been reclassified as Under Evaluation and is currently shut-in. It shall remain shut-in until the MITOA results are analyzed. Given the well needs to be online for AOGCC UIC compliance testing, this testing will be completed once the startinghead leak is diagnosed and repaired if needed. A TIO plot and welibore schematic have been included for reference. «N-23A TIO Plot.doc» «N-23A.pdf» Please let us know if you have any questions. Thank you, Anna ~Du6e, ~.~. (alt Torin Roschinger) Well Integrity Coordinator GPB Wells Group Phone: (907) 659-5102 Pager: (907) 659-5100 x1154 From: NSU, ADW Well Integrity Engineer Sent: Thursday, August 13, 2009 10:17 PM To: GPB, Area Mgr West (GC2/WRD); GPB, GC2 OTL; GPB, GC2 Wellpad Lead; GPB, Well Pad MN; Rossberg, R Steven; Engel, Harry R; NSU, ADW Well Operations Supervisor; GPB, Optimization Engr; GPB, Wells Opt Eng; Starck, Jennifer L Cc: NSU, ADW Well Integrity Engineer Subject: UNDER EVALUATION: N-20A (PTD #1961840) Failed TIFL All, Well N-20A (PTD #1961840) failed a TIFL on 08/13/09 due to the overnight BUR. The failed test indicates compromised tubing. Therefore, the well has been reclassified as Under Evaluation and may produce on a 28- day clock. The plan forward is as follows: 1. D: TIFL - FAILED 2. S: Set DGLVs 3. F: MIT-IA to 3000 psi, LLR if fails 9/15/2009 ~ 0 ~ s ;~ LL~ 11 ~ l ~ l Q ~ 0 Jr n~ 0 G LD p O') n~ W +~ ca 0 -r ti 0 A ~ CD G --J ~ ~ O i.0 O V ti O] `.ti ~~ CD O _~ ~J ~n ~ 0 ~ a ~ ~ ~~ ~ ~ m ~ V m ~ ~_ ~ r, 07 ~n ~ c~ ~1 O W ~ N n~ l ~ l.l.l ~ ro ~ fV CJ7 ~~ r~ ~ Z N W 1 N w ~. y 0 0 ~ - = 0 0 0 ~ ~ ~ ~ ° ~ ~ 0 ~ ~ ~ _ 1 V Q ~ N O ~ ~ V ~ .-F ~ I ~ ~ ~ 0 ~ D~ 3 O o D ~ O D D UNDER EVALUATION: N-23~TD #1970120) Possible Starting Hea~eak Page 2 of 2 Please call with any questions or concerns. Thank you, Torirt Roschinger (alt. Anna Dube) Well Integrity Coordinator Office (907) 659-5102 Cell (406) 570-9630 Pager (907) 659-5100 Ext. 1154 9/15/2009 MEMORANDUM TO: Julie Heusser Chairman State of Alaska Alaska Oil and Gas Conservation Commission DATE: August 4, 2001 d/TyNN3 ..,~ SUBJECT: Mechanical Integrity Tests THRU: Tom Maunder/,T~ ~ -(~O.~-- ,.~_,...,,\ BPX P.I. Superviso~"~,.3~ i'~';-~''' ' N Pad N'23A FROM: Chuck Scheve PBU Petroleum Inspector Prudhoe Bay NON- CONFIDENTIAL w~,~I N-2~^ P.T..D.I 197-0.12 Notes: P~,T-D-I , Notes: P.T.D.I w~,I Packer Depth Pretest Initial 15 Min.' 30 Min. "' ' I,ni.I s I'~.v.O. i ~"~ I ~u~,n" ! ~00'1' ~oo I ~0o' Ty~,testI P'ITes~psil 202,~'lCa~ngI 200 1.24801 2420 I 24,401 P/F ,I --Pi I I ' IT.V.D.I iTubingI' i' "I '1 I"nte"'~"l Typetesil IT~si~sil I casing'li ''1 ' ,!, ,! P~: '1 , I I'~¥,e,.~. I '1 ~'.v.,~. I" ' I ,u~,r~ I I i I' 'l'ae~'l' Typetest, I ' ITest psi I, I ,Ca~ ,nO I , · I I I ! P/F I Type testI ' ITest psi l ' I Cas{ng I ' I !' ' '1 , ,I P/F I ' Type test Type INJ. Fluid Codes F = FRESH WATER INJ. G = GAS INJ. S = SALT WATER INJ. N = NOT INJECTING Type Test M= Annulus Monitoring P= Standard Pressure Test R= Intemal Radioactive Tracer Survey A= Temperature Anomaly Survey D= Differential Temperature Test Interval I= Initial Test 4= Four Year Cycle V= Required by Vadance W= Test dudng Workover O= Other (describe in notes) Tsst's Details I traveled to BPXs N Pad and wimessed the 4 year MIT on well N-23A. The pretest robing and casing were observed and found to be stable. The casing was then pressured up to 2480 psi and observed for 30 minutes with this well demonstrating good mechanical integrity. M.I.T.'s performed: 1 Attachments: Number of Failures: _0 Total Time during tests: 1 hour ,cc: MIT report form 5/12/00 L.G. MIT PBU N-23A 8-4-01 CS.xls 8t9/01 THE MATERIAL UNDER THIS COVER HAS BEEN MICROFILMED ON OR BEFORE JANUARY 03,2001, M PL A T E E IA L U N D W E R T H IS M ARK ER C:LORIXMFILM.DOC PERMIT DATA AOGCC Individual Well Geological Materials Inventory T DATA PLUS 97-012 J2~L 97-012 ~,P SET 97-o12 97-012 ~N 97-012 ~CMT VOL 97-012 ~.LDT/CN 97-012 '~BHC/SL 97-012 ~IT 97-012 7683 97-012 NGP-MD 97-012 NGP-TVD 97-012 8000 97-012 MWD SRVY 10-407 DAILY WELL OPS b~'9730-11720 9900-10058 ~9500-9695 ~8580-8656 ~ 8580-8656 ~/~i0270-11682 ~/10270-11682 ~'10270-11697 ~'i0206-11667 ~"'10363-11709 ~'"SCHLUM AIT/BHC 10073-11852 ~LZ 8586-8737 t-~SPERRY GR/ROP Are dry ditch samples required? yes ~ And received? Was the well cored? yes ~,Analysis & description received? Are well tests required? es n~.~~ Received? ._~es~no~ ...... Well is in compliance ~J .~ In~itial COMMENTS Page: 1 Date: 01/21/99 RUN RECVD FINAL 04/11/97 FINAL 04/11/97 ~L 0~/~1/97 FINAL 05/16/97 FINAL 05/16/97 FINAL 05/16/97 FINAL 05/16/97 FINAL 05/16/97 FINAL 05/16/97 FINAL 05/16/97 1 05/16/97 FINAL 06/04/97 FINAL 06/04/97 2-5 06/20/97 06/16/97 yes~-~nD~ sper r /-sLjr ' D I=! I I_1_1 N CS WELL LOG TRANSMITTAL To: State of Alaska June 25, 1997 Alaska Oil and Gas Conservation Comm. Attn.: Lori Taylor 3001 Porcupine Dr. r-~ Anchorage, Alaska 99501 MWD Formation Evaluation Logs - N-23A, AK-MW-70030 The technical data listed below is being submitted herewith. Please acknowledge receipt by returning a signed copy of this transmittal letter to the attention of.' Jan Galvin, Sperry-Sun Drilling Services, 5631 Silverado Way, #G, Anchorage, AK 99518 1 LDWG formatted Disc with verification listing. APl#: 50-029-21725-01. ,JUN 5631 Silverado Way, Suite G · Anchorage, Alaska 99518 · (9.07) 563-3256 · Fax (907) 563-7252 A Dresser Industries, Inc. Company STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Status of Well Classification of Service Well E~ Oil [-] Gas E~] Suspended I~ Abandoned C~ Service 2. Name of Operator 7. Permit Number BP Exploration (Alaska)Inc. 97-12 3. Address 8. APl Number P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21725-01 4. Location of well at surface i '~'~'~,'~'.:~ ,~,.~ r:?;.¥-~' ~ '~-- 9. Unit or Lease Name 2151 NSL, 568' ~L, SEC. 08, T11N, R13E, UPU ~ ~,.-~-~,: : Prudhoe Bay Unit At top of productive inte~al 615' NSL, 2339' WEL, SEC. 06, T11N, R13E, UPU¢;~;--k"4*;~;:~;::~;'¢ '~ ~~~ N-23Ai At total depth ~ .... ~--/~ ~' '¢~~~ 11 . Field and Pool 127' NSL, 1081' WEL, SEC. 06, T11N, R13E, UPU Prudhoe Bay Field / Prudhoe Bay 5. Elevation in feet (indicate KB, DF, etc.) ~6. Lease Designation and Serial No. Pool KBE = 74.67'~ ADL 028282 12. Date Spudded2/10/97 113' Date I'D' Reached I 14' Date C°mp" Susp" °r Aband'l15' water depth' if °fish°re ~ 16' N°' °f C°mpleti°ns2/15/97 2/28/97 N/A MSLI One 17. Total Depth (MD+~D)118. Plug Back Depth (MD+~D)I19. Directional Su~ey ~20. Depth where SSSV set 121. Thickness of Permafrost 11849' 8737 FT~ 11740 8731 FT~ ~Yes ~No (Nipple) MD 1900' (Approx.) 22. Type Electric or Other Logs Run MWD, LWD (DIWFE), AlT, LDT, CNL, BHS, GR, CALP, CBT 23. CASlNG~ LINER AND CEMENTING RECORD CASING SE~ING DEPTH HOLE SIZE WT. PER FT. G~DE TOP BOSOM SIZE CEMENTING RECORD AMOUNT PULLED 20" Conductor Sudace 110' 8 cu yds Concrete 13-3/8" 72¢ L-80 / S-95 Sudace 2769' 17-1/2" 388 cuff Arctic Set II, 93 cuff Arctic Set I 9-5/8" 47¢ L-80 Sudace 10004' 12-1/4" 1464 cu ft Class 'G', 575 cuff Class 'G' 7" 26~ L-80 9763' 10043' 8-1/2" 500 cuff Class 'G' 9-5/8" x 7" x 4-1/2" Tieback Sleeve 9564' 9594' 4-1/2" 12.6¢ L-80 9594' 11795' 6" 420 cuff Class 'G' 24. Perforations open to Production (MD+~D of Top and 25. TUBING RECORD Bottom and inte~al, size and number) S~ZE DEPTH SET (MD) PACKER SET (MD) 2-3/4" Gun Diameter, 4 spf 4-1/2", 12.6¢, L-80 9570' 9512' MD ~D MD ~D 10570' - 10590' 8655' - 8666' 10730' - 10770' 8675' - 8678' 26. AC~D, FRACTURE, CEMENT SQUEEZE, ETC. 10870' - 10890' 8685' - 8687' DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 10990' - 11010' 8692' - 8694' 11310'-11350' 8708'-8710'0RI61NAL Freeze Protect with168 Bbls of Diesel 11490' - 11510' 8716' - 8717' 11630' - 11650' 8726' -8727' 11690'-11730' 8729'- 8731' 27. PRODUCTION TEST Date First Production l Method of Operation (Flowing, gas lift, etc.) March 14, 1997~ Produced Water Injector Date of Test Hours Tested PRODUCTION FOR OIL-DEL GAS-MCF WATER-BEE CHOKE SIZE ~GAs-OIL RATIO I TEST PERIOD Flow Tubing Casing Pressure CALCU~TED OIL-BBL ~GAS-MCF WATER-DEL O~L GRAV~-API (CORR) Press. 24-HOUR RATE 28. CORE DATA ' '' ~ /;~ ~ '~ ~l * Brief description of lithology, porosity, fractures, apparent dips and presence of o~¢~ ¢~,~er.~, 8~core chips. Form 10-407 Rev. 07-01-80 Submit In Duplicate 29. Geologic Markers 30. Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids Marker Name Depth Depth recovered and gravity, GOR, and time of each phase. Sag River 10035' 8555' Shublik 10075' 8587' Top of Sadlerochit 10214' 8656' 31. List of Attachments Summary of Daily Drilling Reports, Surveys 32.,herebycertifythatth(/e/fo//;,g. oin~correcttothebestofmyknowledge ~ 61"1~1 Signed '~;/,¢~ Paul Pdnce ,/~,~ _ Title Senior Drilling Engineer Date ~//?/'~/~) N-23Ai 97-12 Prepared By Name/Number: Terrie Hubb/e, 564-4628 Well Number Permit No, /Approval No, INSTRUCTIONS GENERAL: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITEM 1-' Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. ITEM 5: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. ITEM 16 AND 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. ITEM 21: Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). ITEM 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. ITEM 2?.' Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, Other-explain. ITEM 28: If no cores taken, indicate 'none'. .i?-; :-~.?.~;" i '; -' Form 10~407 Rev. 07-01-80 Facility Date/Time 02 Feb 97 03 Feb 97 04 Feb 97 05 Feb 97 06 Feb 97 07 Feb 97 08 Feb 97 Progress Report PB N Pad Well N-23A Page 1 Rig NaborslSE Date 22May97 15:00-04:30 04:30-06:00 06:00-09:00 09:00-11:00 11:00-12:30 12:30-13:00 13:00-13:30 13:30-18:30 18:30-01:00 01:00-04:30 04:30-06:00 06:00-12:00 12:00-19:00 19:00-03:30 03:30-05:30 05:30-06:00 06:00-18:00 18:00-21:30 21:30-06:00 06:00-06:30 06:30-07:00 07:00-07:30 07:30-08:00 08:00-12:00 12:00-13:00 13:00-13:30 13:30-17:00 17:00-21:00 21:00-01:00 01:00-01:30 01:30-02:00 02:00-03:00 03:00-03:30 03:30-06:00 06:00-09:30 09:30-10:00 10:00-13:00 13:00-14:00 14:00-17:00 17:00-18:00 18:00-21:00 21:00-21:30 21:30-01:00 01:00-02:00 02:00-02:30 02:30-06:00 06:00-09:00 09:00-12:00 12:00-15:30 15:30-17:00 17:00-17:30 17:30-18:30 18:30-19:30 19:30-22:30 Duration 13-1/2 hr 1-1/2 hr 3 hr 2hr 1-1/2 hr 1/2 hr 1/2 hr 5 hr 6-1/2 hr 3-1/2 hr 1-1/2 hr 6hr 7hr 8-1/2 hr 2 hr 1/2 hr 12hr 3-1/2 hr 8-1/2 hr 1/2 hr 1/2 hr 1/2 hr 1/2 hr 4hr lhr 1/2 hr 3-1/2 hr 4hr 4hr 1/2 hr 1/2 hr 1 hr 1/2 hr 2-1/2 hr 3-1/2 hr 1/2 hr 3 hr 1 hr 3 hr lhr 3 hr 1/2 hr 3-1/2 hr 1 hr 1/2 hr 3-1/2 hr 3hr 3 hr 3-1/2 hr 1-1/2 hr 1/2 hr lhr 1 hr 3hr Activity Rig moved 100.00 % Rigged up Service lines Rigged up Service lines (cont...) Fill pits with Seawater Retrieved Xmas tree integral components Cleared Charge pumps Held safety meeting Circulated at 9620.00 ft Rigged up BOP stack Installed BOP stack Pulled Tubing on retrieval string to -0.00 ft Pulled Tubing on retrieval string to -0.00 ft (cont...) Conducted electric cable operations Conducted slickline operations on Slickline equipment - Retrival run Circulated at 9645.00 ft Laid down Tubing of 400.00 ft Laid down 9620.00 ft of Tubing (cont...) Tested BOP stack Singled in drill pipe to 8650.00 ft Singled in drill pipe to 9597.00 ft Washed to 9645.00 ft Worked toolstring at 9645.00 ft Circulated at 9645.00 ft Pulled out of hole to 30.00 ft Made up BHA no. 1 Tested Casing R.I.H. to 9645.00 ft Washed to 9645.00 ft Pulled out of hole to 50.00 ft Pulled BHA Made up BHA no. 2 R.I.H. to 2500.00 ft Serviced Block line R.I.H. to 9645.00 ft Pulled out of hole to -0.00 ft Made up BHA no. 4 R.I.H. to 9645.00 ft Fished at 9645.00 ft Pulled out of hole to -0.00 ft Made up BHA no. 5 R.I.H. to 9645.00 ft Fished at 9645.00 ft Pulled out of hole to -0.00 ft Laid down fish Made up BHA no. 6 R.I.H. to 9659.00 ft Milled Permanent packer at 9659.00 ft Circulated closed in well at 9659.00 ft Pulled out of hole to -0.00 ft Laid down fish R.I.H. to 445.00 ft Pulled BHA Made up BHA no. 7 R.I.H. to 9965.00 ft Facility Date/Time 09 Feb 97 10 Feb 97 11 Feb 97 12 Feb 97 13 Feb 97 Progress Report PB N Pad Well N-23A Page 2 Rig Nabors 18E Date 22 May 97 22:30-00:00 00:00-02:00 02:00-03:00 03:00-06:00 06:00-06:30 06:30-08:30 08:30-11:00 11:00-12:00 12:00-13:00 13:00-14:00 14:00-15:00 15:00-16:00 16:00-16:30 16:30-21:00 21:00-01:30 01:30-02:30 02:30-06:00 06:00-10:30 10:30-12:00 12:00-14:30 14:30-16:00 16:00-17:00 17:00-19:30 19:30-20:00 20:00-20:30 20:30-00:00 00:00-00:30 00:30-06:00 06:00-08:00 08:00-20:00 20:00-21:30 21:30-02:00 02:00-02:30 02:30-03:30 03:30-06:00 06:00-08:00 08:00-14:00 14:00-15:30 15:30-20:00 20:00-21:00 21:00-01:00 01:00-01:15 01:15-02:30 02:30-06:00 06:00-07:00 07:00-07:30 07:30-08:00 08:00-15:00 15:00-16:30 16:30-19:30 19:30-21:00 21:00-21:30 21:30-22:00 22:00-00:00 Duration 1-1/2 hr 2 hr 1 hr 3 hr 1/2 hr 2hr 2-1/2 hr lhr 1 hr lhr 1 hr lhr 1/2 hr 4-1/2 hr 4-1/2 hr lhr 3-1/2 hr 4-1/2 hr 1-1/2 hr 2-1/2 hr 1-1/2 hr lhr 2-1/2 hr 1/2 hr 1/2 hr 3-1/2 hr 1/2 hr 5-1/2 hr 2 hr 12hr 1-1/2 hr 4-1/2 hr 1/2 hr lhr 2-1/2 hr 2 hr 6hr 1-1/2 hr 4-1/2 hr lhr 4hr 1/4 hr 1-1/4 hr 3-1/2 hr 1 hr 1/2 hr 1/2 hr 7 hr 1-1/2 hr 3 hr 1-1/2 hr 1/2 hr 1/2 hr 2hr Activity Circulated at 9686.00 ft Drilled cement to 10074.00 ft Circulated at 10074.00 ft Circulated at 10074.00 ft Circulated at 10074.00 ft Laid down 2015.00 ft of 5in OD drill pipe Pulled out of hole to -0.00 ft Pulled BHA Rigged up Logging/braided cable equipment R.I.H. to 10071.00 ft Set downhole equipment (wireline) Pulled out of hole to -0.00 ft Rigged down Logging/braided cable equipment Made up BHA no. 8 R.I.H. to 10025.00 ft Set tool face ~----~Milled Other sub-surface equipment at 10043.00 ft Milled Casing at 10072.00 ft Circulated at 10072.00 ft Pulled out of hole to 2801.00 ft Pulled BHA Pulled BHA Made up BHA no. 9 R.I.H. to 3500.00 ft Serviced Block line R.I.H. to 10060.00 ft Set tool face Drilled to 10145.00 ft Drilled to 10145.00 ft Drilled to 10532.00 ft Circulated at 10532.00 ft Pulled out of hole to 72.00 ft Pulled BHA Made up BHA no. 10 R.I.H. to 7250.00 ft R.I.H. to 10532.00 ft Drilled to 10702.00 ft Circulated at 10702.00 fi Pulled out of hole to -0.00 ft Pulled BHA Tested BOP stack Held drill (H2S) Made up BHA no. 11 R.I.H. to 8000.00 ft R.I.H. to 8400.00 ft R.I.H. to 10643.00 ft Logged hole with LWD: DIR/FE from 10661.00 ft to 10702.00 ft Drilled to 10899.00 ft Circulated at 10899.00 ft Pulled out of hole to 2742.00 ft Pulled BHA Serviced Drillfloor / Derrick Serviced BOP stack Made up BHA no. 12 Facility Date/Time 14 Feb 97 15 Feb 97 16 Feb 97 17 Feb 97 18 Feb 97 19 Feb 97 20 Feb 97 Progress Report PB N Pad Well N-23A Page 3 Rig Nabors 18E Date 22 May 97 00:00-02:30 02:30-03:30 03:30-06:00 06:00-03:00 03:00-06:00 06:00-07:30 07:30-09:00 09:00-09:30 09:30-11:00 11:00-12:00 12:00-14:30 14:30-20:30 20:30-21:30 21:30-00:30 00:30-04:00 04:00-05:00 05:00-06:00 06:00-07:00 07:00-12:00 12:00-13:00 13:00-16:00 16:00-17:00 17:00-19:30 19:30-02:00 02:00-03:00 03:00-03:30 03:30-04:30 04:30-06:00 06:00-08:30 08:30-09:30 09:30-13:30 13:30-17:30 17:30-22:30 22:30-00:30 00:30-01:00 O1:00-06:00 06:00-16:00 16:00-17:30 17:30-21:30 21:30-02:30 02:30-03:00 03:00-06:00 06:00-09:30 09:30-13:00 13:00-22:00 22:00-00:30 00:30-03:00 03:00-06:00 06:00-08:00 08:00-08:30 08:30-09:00 09:00-11:00 11:00-17:30 17:30-00:00 Duration 2-1/2 hr lhr 2-1/2 hr 21 hr 3hr 1-1/2 hr 1-1/2 hr 1/2 hr 1-1/2 hr lhr 2-1/2 hr 6hr lhr 3hr 3-1/2 hr 1 hr lhr lhr 5hr 1 hr 3hr lhr 2-1/2 hr 6-1/2 hr 1 hr 1/2 hr lhr 1-1/2 hr 2-1/2 hr lhr 4hr 4hr 5hr 2 hr 1/2 hr 5 hr 10 hr 1-1/2 hr 4 hr 5 hr 1/2 hr 3 hr 3-1/2 hr 3-1/2 hr 9 hr 2-1/2 hr 2-1/2 hr 3hr 2 hr 1/2 hr 1/2 hr 2hr 6-1/2 hr 6-1/2 hr Activity R.I.H. to 10850.00 ft Logged hole with LWD: DIR/FE from 10850.00 ft to 10899.00 ft Drilled to 10990.00 ft Drilled to 11849.00 ft Circulated at 11849.00 ft Pulled out of hole to 9525.00 ft Flow check Bullhead well R.I.H. to 11849.00 ft Circulated at 11849.00 ft Circulated at 11849.00 ft Circulated at 10.00 ft Circulated at 11859.00 ft Pulled out of hole to 9525.00 ft Circulated at 10.00 ft Circulated at 9525.00 ft Pulled out of hole to 8150.00 ft Flow check Pulled out of hole to 2742.00 ft Pulled BHA Made up BHA no. 13 Serviced Block line R.I.H. to 9970.00 ft Circulated at 9970.00 ft Circulated at 9970.00 ft Pulled out of hole to 8846.00 ft Circulated at 8846.00 ft Pulled out of hole to 5000.00 ft Pulled out of hole to 40.00 ft Pulled BHA R.I.H. to 7889.00 ft Pulled out of hole to 10.00 ft R.I.H. to 9688.00 ft Circulated at 9688.00 ft R.I.H. to 10080.00 ft Opened hole to 10500.00 ft (6in) Opened hole to 11700.00 ft (6in) Circulated at 11700.00 ft Circulated at 11700.00 ft Pulled out of hole to 60.00 ft Pulled BHA R.I.H. to 6000.00 ft R.I.H. to 9880.00 ft Installed Drilling tool / logs Conducted electric cable operations Conducted electric cable operations Functioned Formation logs Pulled out of hole to 3000.00 ft Pulled out of hole to 97.00 ft (cont...) Removed Bore protector Held safety meeting Ran Casing to 2193.00 ft (4-1/2in OD) Ran Tubing to 2100.00 ft (2-3/8in OD) Ran Casing on landing string to 9800.00 ft Facility Date/Time 21 Feb 97 22 Feb 97 23 Feb 97 24 Feb 97 25 Feb 97 26 Feb 97 PB N Pad 00:00-01:00 01:00-02:30 02:30-05:00 05:00-06:00 06:00-07:00 07:00-07:30 07:30-12:00 12:00-12:30 12:30-20:30 20:30-21:30 21:30-23:00 23:00-00:00 00:00-01:00 01:00-01:30 01:30-06:00 06:00-07:00 07:00-07:30 07:30-10:00 10:00-11:00 11:00-12:00 12:00-13:00 13:00-15:30 15:30-18:30 18:30-21:30 21:30-01:00 01:00-05:30 05:30-06:00 06:00-06:15 06:15-09:30 09:30-10:00 10:00-10:30 10:30-13:30 13:30-14:00 14:00-17:30 17:30-21:00 21:00-00:00 00:00-05:30 05:30-06:00 06:00-09:00 09:00-10:30 10:30-15:30 15:30-16:00 16:00-21:00 21:00-23:30 23:30-05:30 05:30-06:00 06:00-07:30 07:30-11:00 11:00-11:30 11:30-14:30 14:30-19:00 19:00-02:00 02:00-03:00 03:00-05:30 Duration 1 hr 1-1/2 hr 2-1/2 hr lhr lhr 1/2 hr 4-1/2 hr 1/2 hr 8hr lhr 1-1/2 hr 1 hr 1 hr 1/2 hr 4-1/2 hr 1 hr 1/2 hr 2-1/2 hr 1 hr 1 hr lhr 2-1/2 hr 3hr 3hr 3-1/2 hr 4-1/2 hr 1/2 hr 1/4 hr 3-1/4 hr 1/2 hr 1/2 hr 3 hr 1/2 hr 3-1/2 hr 3-1/2 hr 3hr 5-1/2 hr 1/2 hr 3 hr 1-1/2 hr 5 hr 1/2 hr 5hr 2-1/2 hr 6hr 1/2 hr 1-1/2 hr 3-1/2 hr 1/2 hr 3 hr 4-1/2 hr 7hr 1 hr 2-1/2 hr Progress Report Well N-23A Page 4 Rig Nabors 18E Date 22 May 97 Activity Circulated at 9800.00 ft Ran Casing on landing string to 11847.00 ft Circulated at 11847.00 ft Circulated at 11820.00 ft Circulated at 11820.00 ft (cont...) Laid down 63.00 ft of 5in OD drill pipe Circulated at 11750.00 ft Reverse circulated at 9554.00 ft Pulled Drillpipe in stands to 9554.00 ft Retrieved Other sub-surface equipment Ran Casing to 60.00 ft (8in OD) Ran HWDP on landing string to 639.00 ft Ran Liner on landing string to 2500.00 ft Serviced Block line Ran Liner on landing string to 9300.00 ft Ran Liner on landing string to 9500.00 ft (cont...) Ran Liner on landing string to 9564.00 ft Circulated at 11795.00 ft Mixed and pumped slurry - 75.000 bbl Displaced slurry - 187.000 bbl Circulated at 9564.00 ft Circulated at 9300.00 ft Pulled Drillpipe in stands to 9564.00 ft Laid down 2700.00 ft of 3-1/2in OD drill pipe Tested BOP stack Made up BHA no. 16 Tested Kelly cocks Tested Kelly cocks (cont...) R.I.H. to 11550.00 ft Drilled cement to 11630.00 ft Tested Liner - Via annulus and string Drilled cement to 11740.00 ft Tested Liner - Via annulus and string Circulated at 11740.00 ft Pulled out of hole to 2200.00 ft Pulled BHA Conducted electric cable operations Installed Drilling tool / logs Installed Drilling tool / logs (cont...) Retrieved Drilling tool / logs Pulled out of hole to 57.00 ft Installed Toolstring R.I.H. to 9354.00 ft Installed Other sub-surface equipment Ran logs on tubulars Retrieved Cable Retrieved Cable (cont...) Pulled out of hole to 2100.00 ft Serviced Block line Pulled out of hole to -0.00 ft Installed Gun assembly Ran Drillpipe in stands to 11470.00 ft Perforated from 10570.00 ft to 11730.00 ft Circulated at 9405.00 ft Facility Date/Time 27 Feb 97 28 Feb 97 Progress Report PB N Pad Well N-23A Rig Nabors 18E Page 5 Date 22 May 97 05:30-06:00 06:00-15:00 15:00-18:00 18:00-19:30 19:30-06:00 06:00-07:00 07:00-10:00 10:00-15:00 15:00-17:00 17:00-21:00 21:00-23:00 23:00-01:30 01:30-02:30 02:30-04:00 04:00-06:00 Duration 1/2 hr 9 hr 3hr 1-1/2 hr 10-1/2 hr 1 hr 3 hr 5hr 2hr 4 hr 2hr 2-1/2 hr lhr 1-1/2 hr 2hr Activity Laid down 300.00 ft of 5in OD drill pipe Laid down 9350.00 ft of 5in OD drill pipe (cont...) Rigged down sub-surface equipment - Perforating tools Rigged up Top ram Ran Tubing to 9569.00 ft (4-1/2in OD) Rigged up Tubing hanger Circulated at 9565.00 ft Freeze protect well - 168.000 bbl of Diesel Installed Hanger plug Removed BOP stack Cut Drillpipe at -0.00 ft Installed All tree production valves Removed Hanger plug Tested Permanent packer Installed Hanger plug SPERRY-SUN DRILLING SERVICES ANCHORAGE ALASKA PAGE 1 SHARED SERVICES DRILLING PBU / N-23A 5oo2921725oz NORTH SLOPE BOROUGH COMPUTATION DATE: 2/26/97 .. DATE OF SURVEY: 021597 MWD SURVEY JOB NUMBER: AK-MW-70006 KELLY BUSHING ELEV. = 74.67 FT. OPERATOR: BP EXPLORATION TRUE SUB-SEA MEASD VERTICAL VERTICAL DEPTH DEPTH DEPTH COURS INCLN DG MN COURSE DLS TOTAL DIRECTION RECTANGULAR COORDINATES DEGREES DG/100 NORTH/SOUTH EAST/WEST VERT. SECT. 9999.22 8525.34 8450.67 10048.00 8566.44 8491.77 1.0052.74 8570.38 8495.71 10073.00 8586.68 8512.01 10082.72 8594.18 8519.51 32 32 34 37 41 16 54 51 56 5 N 22.30 W .00 3590.32N 2865.90W -4060.59 N 22.60 W 1.33 3614.60N 2875.93W -4079.48 N 22.05 W 41.85 3617.04N 2876.94W -4081.37 N 20.06 W 16.28 3628.26N 2881.25W -4089.80 N 19.22 W 32.87 3634.09N 2883.32W -4094.03 10104.92 8609.98 8535.31 10113.33 8615.46 8540.79 10135.57 8628.45 8553.78 10145.09 8633.29 8558.63 10176.95 8646.80 8572.13 48 4 50 37 57 51 60 55 68 54 N 17.64 W 31.83 3648.86N 2888.23W -4104.43 N 17.14 W 30.65 3654.95N 2890.14W -4108.61 N 15.96 W 32.84 3672.24N 2895.27W -4120.21 N 15.50 W 32.52 3680.13N 2897.49W -4125.39 N 8.80 W 31.45 3708.31N 2903.50W -4142.15 10208.94 8655.43 8580.76 10242.99 8658.42 8583.75 10276.28 8657.34 8582.67 10307.63 8655.86 8581.19 10338.45 8655.05 8580.38 79 45 90 10 93 30 91 54 91 4 N 4.20 W 36.59 3738.86N 2906.95W -4157.50 N .10 W 32.89 3772.70N 2908.21W -4172.16 N 9.80 E 31.36 3805.81N 2905.40W -4182.80 N 20.50 E 34.47 3835.99N 2897.23W -4187.35 N 32.10 E 37.72 3863.56N 2883.60W -4185.86 10370.09 8654.74 8580.07 10401.98 8655.80 8581.13 10433.78 8658.68 8584.01 10466.18 8662.27 8587.60 10483.62 8663.83 8589.16 9O 1 86 10 83 29 83 50 85 55 N 44.80 E 40.27 3888.29N 2863.97W -4177.73 N 56.50 E 38.61 3908.46N 2839.37W -4163.22 N 68.80 E 39.43 3922.99N 2811.30W -4143.28 N 81.80 E 39.89 3931.14N 2780.22W -4118.04 N 87.90 E 36.84 3932.70N 2762.93W -4102.80 10496.17 8664.50 8589.83 10528.11 8664.90 8590.23 10559.70 8664.94 8590.27 10591.33 8665.66 8590.99 10618.26 8666.83 8592.16 87 58 90 34 89 17 88 5 86 55 S 89.00 E 29.54 3932.82N 2750.40W -4091.36 S 78.80 E 32.96 3929.43N 2718.69W -4060.93 S 75.90 E 10.05 3922.51N 2687.87W -4029.92 S 73.40 E 8.77 3914.14N 2657.38W -3998.62 S 71.10 E 9.58 3905.94N 2631.76W -3971.85 10651.37 8668.75 8594.08 10687.94 8671.28 8596.61 10718.84 8673.65 8598.98 10749.73 8676.03 8601.36 10782.40 8678.47 8603.80 86 26 85 35 85 36 85 33 85 51 S 67.80 E 10.05 3894.34N 2600.81W -3938.84 S 65.60 E 6.44 3879.91N 2567.31W -3902.37 S 65.20 E 1.29 3867.08N 2539.30W -3871.57 S 62.20 E 9.68 3853.44N 2511.69W -3840.81 S 59.50 E 8.29 3837.57N 2483.24W -3808.39 10811.39 8680.62 8605.95 10842.50 8682.99 8608.32 10873.29 8685.36 8610.69 10904.33 8687.60 8612.93 10936.41 8689.46 8614.79 85 4O 85 33 85 37 86 5 87 16 S 58.80 E 2.50 3822.75N 2458.42W -3779.72 S 59.10 E 1.03 3806.75N 2431.85W -3748.97 S 58.30 E 2.60 3790.80N 2405.62W -3718.55 S 57.80 E 2.21 3774.42N 2379.35W -3687.93 S 56.10 E 6.46 3756.95N 2352.51W -3656.35 ERRY-SUN DRILLING SERVICES ANCHORAGE ALASKA PAGE SHARED SERVICES DRILLING PBU / N-23A 500292172501 NORTH SLOPE BOROUGH COMPUTATION DATE: 2/26/97 DATE OF SURVEY: 021597 MWD SURVEY JOB NUMBER: AK-MW-70006 KELLY BUSHING ELEV. = 74.67 OPERATOR: BP EXPLORATION FT. TRUE SUB-SEA MEASD VERTICAL VERTICAL DEPTH DEPTH DEPTH COURS INCLN DG MN COURSE DLS TOTAL DIRECTION RECTANGULAR COORDINATES DEGREES DG/100 NORTH/SOUTH EAST/WEST VERT. SECT. 10967.30 8691.02 8616.35 86 56 S 55.10 E 3.41 3739.53N 10998.21 8692.73 8618.06 86 41 S 56.00 E 3.01 3722.07N 11028.95 8694.51 8619.84 86 40 S 55.20 E 2.60 3704.73N 11060.60 8696.21 8621.54 87 10 S 54.70 E 2.25 3686.58N 11091.49 8697.72 8623.05 87 12 S 54.40 E .98 3668.69N 2327.05W -3626.05 2301.60W -3595.75 2276.28W -3565.61 2250.41W -3534.65 2225.28W -3504.46 11122.39 8699.08 8624.42 87 43 S 56.90 E 8.25 3651.27N 11154.44 8700.46 8625.79 87 22 S 58.30 E 4.50 3634.12N 11185.25 8701.90 8627.23 87 15 S 58.40 E .48 3617.97N 11215.79 8703.35 8628.68 87 19 S 58.40 E .19 3601.98N 11246.89 8704.79 8630.12 87 20 S 58.60 E .65 3585.75N 2199.80W -3474.15 2172.76W -3442.52 2146.57W -3412.05 2120.58W -3381.85 2094.09W -3351.08 11278.36 8706.26 8631.59 87 18 S 58.10 E 1.59 3569.25N 11310.89 8707.77 8633.10 87 22 S 57.60 E 1.55 3551.96N 11341.95 8709.17 8634.50 87 26 S 58.10 E 1.62 3535.45N 11373.89 8710.59 8635.92 87 28 S 57.30 E 2.51 3518.40N 11403.69 8711.93 8637.26 87 20 S 57.60 E 1.10 3502.38N 2067.33W -3319.96 2039.82W -3287.83 2013.55W -3257.16 1986.58W -3225.62 1961.49W -3196.22 11435.43 8713.33 8638.66 87 35 S 57.50 E .82 3485.37N 11466.48 8714.77 8640.10 87 5 S 57.50 E 1.58 3468.71N 11498.08 8716.43 8641.76 86 53 S 57.10 E 1.43 3451.66N 11529.38 8718.49 8643.82 85 33 S 57.60 E 4.54 3434.81N 11559.05 8720.80 8646.13 85 30 S 56.80 E 2.70 3418.79N 1934.73W -3164.90 1908'.57W -3134.26 1882.02W -3103.11 1855.72W -3072.28 1830.86W -3043.08 11590.16 8723.18 8648.51 85 44 S 56.40 E 1.50 3401.71N 11621.89 8725.22 8650.55 86 53 S 55.80 E 4.09 3384.05N 11652.76 8726.85 8652.18 87 3 S 55.80 E .55 3366.72N 11684.10 8728.40 8653.73 87 15 S 54.90 E 2.93 3348.93N 11716.15 8730.00 8655.33 87 3 S 55.20 E 1.12 3330.59N 1804.96W -3012.52 1778.68W -2981.38 1753.19W -2951.09 1727.44W -2920.38 1701.20W -2889.00 11748.12 8731.67 8657.00 86 56 S 55.30 E .44 3312.39N 11780.50 8733.43 8658.76 86 48 S 55.60 E 1.04 3294.06N 11852.00 8737.64 8662.97 86 27 S 56.27 E 1.05 3254.08N 1674.97W -2857.69 1648.34W -2825.95 1589.21W -2755.78 THE CALCULATION PROCEDURES ARE BASED ON THE USE OF THREE-DIMENSION MINIMUM CURVATURE METHOD. HORIZONTAL DISPLACEMENT = 3621.41 FEET AT NORTH 26 DEG. 1 MIN. WEST AT MD = 11852 VERTICAL SECTION RELATIVE TO WELL HEAD VERTICAL SECTION COMPUTED ALONG 113.52 DEG. TIE-IN SURVEY AT 9,999.20' MD WINDOW POINT AT 10,048.00' MD ' PROJECTED SURVEY AT 11,852.00' MD S' ~RRY-SLrN DRILLING SERVICES ANCHORAGE ALASKA PAGE 3 SHARED SERVICES DRILLING PBU / N-23A 500292172501 NORTH SLOPE BOROUGH COMPUTATION DATE: 2/26/97 DATE OF SURVEY: 021597 JOB NUMBER: AK-MW-70006 KELLY BUSHING ELEV. = 74.67 FT. OPERATOR: BP EXPLORATION INTERPOLATED VALUES FOR EVEN 1000 FEET OF MEASURED DEPTH TRUE SUB-SEA MEASD VERTICAL VERTICAL DEPTH DEPTH DEPTH TOTAL RECTANGULAR COORDINATES NORTH/SOUTH EAST/WEST MD-TVD VERTICAL DIFFERENCE CORRECTION 9999.22 8525.34 8450.67 3590.32 N 10999.22 8692.79 8618.12 3721.50 N 11852.00 8737.64 8662.97 3254.08 N 2865.90 W 1473.88 2300.77 W 2306.43 832.55 1589.21 W 3114.36 807.93 THE CALCULATION PROCEDURES ARE BASED ON THE USE OF THREE-DIMENSION MINIMUM CURVATURE METHOD. 'RRY-SUN DRILLING SERVICES ANCHORAGE ALASKA ....... PAGE SHARED SERVICES DRILLING DBU / N-23A 500292172501 NORTH SLOPE BOROUGH COMPUTATION DATE: 2/26/97 DATE OF SURVEY: 021597 JOB NUMBER: AK-MW-70006 KELLY BUSHING ELEV. = 74.67 OPERATOR: BP EXPLORATION FT. INTERPOLATED VALUES FOR EVEN 100 FEET OF SUB-SEA DEPTH TRUE SUB-SEA MEASD VERTICAL VERTICAL DEPTH DEPTH DEPTH TOTAL RECTANGULAR COORDINATES NORTH/SOUTH EAST/WEST MD-TVD VERTICAL DIFFERENCE CORRECTION 9999.22 8525.34 8450.67 3590.32 N 2865.90 W 1473.88 10058.03 8574.67 8500.00 3619.91 N 2878.07 W 1483.36 9.48 10732.09 8674.67 8600.00 3861.34 N 2527.40 W 2057.42 574.07 11852.00 8737.64 8662.97 3254.08 N 1589.21 W 3114.36 1056.94 THE CALCULATION PROCEDURES USE A LINEAR INTERPOLATION BETWEEN THE NEAREST 20 FOOT MD (FROM MINIMUM CURVATURE) POINTS WELL LOG TRANSMITTAL To: State of Alaska June 4, 1997 Alaska Oil and Gas Conservation Comm. Attn.: Lori Taylor 3001 Porcupine Drive Anchorage, Alaska 99501 RE: MWD Formation Evaluation Logs N-23A, AK-MW-70030 The technical data listed below is being submitted herewith. Please acknowledge receipt by returning a signed copy of this of this transmittal letter to the attention off Jim Galvin, Sperry-Sun Drilling Services, 5631 Silverado Way, #G, Anchorage, AK 99518 N-23A: 2" x 5" MD Gamma Ray Logs: 50-029-21725-01 2" x 5" TVD Gamma Ray Logs: 50-029-21725-01 1 Blueline 1 Rev Folded Sepia 1 Blueline 1 Rev Folded Sepia 5631 Silverado Way, Suite G · Anchorage, AJaska 99518 ° (9.07) 563-3256 · Fax (907) 563-7252 A Dresser Industries, Inc. Company GeoQuest 500 W. International Airport Road Anchorage, AK 99518-1199 ATTN: Sherrie NO. 11027 Company: Field: Alaska Oil & Gas Cons Comm Attn: Lori Taylor 3001 Porcupine Drive Anchorage, AK 99501 Prudhoe Bay (Open Hole) 5/14/97 Well Job # Log Description Date BL RF Sepia LIS Tape N-23A q:~-- ~(_r; '? L'~.,.,~ _.. 97099 PEX,AIT,BHC 970219 1 N-23A 97099 PEX-AIT 97021 9 1 1 N-23A 97099 PEX-CNL 970219 I 1 N-23A 97099 PEX-LDT/CNL 970219 I 1 N-23A 97099 PEX-BHC 970219 I 1 N-23A 97099 PEX-CEMENT VOLUME LOG 97021 9 I 1 N-23A 97099 SSTVD-AIT 970219 1 1 N-23A 97099 SSTVD-LDT/CNL 97021 9 I I PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotectnical Data Center MB3-3 900 E. Benson Blvd. Anchorage, Alaska 99519-6612 Date Delivered: Schlumberger GeoQuest 500 W. International Airport Road Anchorage, Alaska 99618~1199 Received b~~.~~ ~,~ i'1 L! i i-i1 ~I:.] i[,e [:.]; GeoQuest 500 W. International Airport Road Anchorage, AK 99518-1199 ATTN: Sherrie NO. 10916 Company: Field: Alaska Oil & Gas Cons Corem Attn: Lori Taylor 3001 Porcupine Drive Anchorage, AK 99501 Prudhoe Bay (Cased Hole) 4~7~97 Well Job # Log Description Date BL RF Sepia LIS Tape A-07 LEAK DETECTION 97021 3 1 1 - 19 WHIPSTOCK RECORD 970202 1 1 - 19 GR/CCL/DEPTH DETERMINATION 97021 3 I 1 - 23 A WHIPSTOCK PACKER 970209 1 1 - 29 PERFORATING RECORD 970224 1 1 -03 PRODUCTION PROFILE 97021 5 1 1 J-03 !PERFORATING RECORD 970219 1 1 -04 WHIPSTOCK SET RECORD 970214 1 1 K-07 (23-33-12-14) LEAK DETECTION LOG 970226 I 1 N-23A JET CU'I-i'ER 970204 I 1 N-23A BRIDGE PLUG SET 970209 1 1 N-23A CEMENT BOND LOG 970224 I 1 - 12 PERFORATION RECORD 970211 I 1 Y-01 A GR/COLLAR/JEWELRY LOG 97021 2 1 1 -01 A PERFORATING RECORD 970214 1 1 -20 LEAK DETECTION LOG 970220 I 1 Z-32 .~ ~ ~,.~,-ip__. GR/CCL 970227 1 I 'IL.. oSH ~5' 0'55 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotectnical Data Center MB3-3 900 E. Benson Blvd. Anchorage, Alaska 99519-6612 Date Delivered: ' Schlumberger GeoQuest , ~ 4~, _ ~.~ 500 W. International Airport Road ~ ~,~~ ~% ~~, Anchorage, Alaska 99618-1199 ~ J TONY KNOWLES, GOVERNOR ~I~S~tA OIL ~D GAS CONSERVATION CO~I31ISSIO~Y 3(:;01 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 January 21, 1997 Paul Pr/ce Senior Drilling Enginccr BP Exploration (Alaska), Inc. P O Box 196612 Anchora_oe. AK 99519-6612 Pmdhoe Bay Unit N-23A BP Exploration (Alaska), Inc. Permit No. 97-12 Sur. Loc. 2151'NSL. 568'EWL. Scc. 08. T1 IN. R15E. UM Btmnhol¢ Loc. 50'NSL, 877'WEL, Sec. 06, T! 1N. RI3E. Dcar Mr. Price: Enclosed is the approved application for permit to rcdrill the,above refcrenccd well. The permit to rcdrill docs not exempt you from obtaining additional pcrmits rcquircd by law from othcr goven~-nental agcncics, and docs not authorize conducting drilling opcrations until all othcr required permitting determinations are made. Bloxvout prevention cquipmcnt (BOPE) must bc tcstcd in accordance with 20 AAC 25 035. Sufficient notice (approximately 24 hours) must be given to allmv a rcprcscntativc of thc Commission to witness a test of BOPE installed prior to drilling new hole. Notice may be given bx' contacting the Commission petrolcum field inspector on the North Slopc pager at 65%3607. David W. Johnston Chairman ~",. BY ORDE~ISSION dlf/Enclosures CC: Dcpartmcnt of Fish & Game, Habitat Section w/o cnct. Department of Environmental Conservation w/o cncl. STATE OF ALASKA ' ALASKA'OIL AND GAS CONSERVATION co~MMISSION - PERMIT TO DRILL 20 AAC 25.005 [] Drill [] Redrill 1 lb. Type of well [] Exploratory [] Stratigraphic Test [] Development Oil la. Typeofwork i-IRe-Entry []Deepen~ []Service []Development Gas I-ISingle Zone []Multiple Zone 2. Name of Operator i5. Datum Elevation (DF or KB) 10. Field and Pool BP Exploration (Alaska) Inc. Plan KBE - 73.64' Prudhoe Bay Field / Prudhoe 3. Address 6. Property Designation Bay Pool P.O. Box 196612, Anchorage, Alaska 99519-6612 ADL 028282 4. Location of well at surface 7. Unit or Property Name 11. Type Bond (See 20 AAC 25.025) 2151' NSL, 568' EWL, SEC. 08, T11N, R13E, UPM Prudhoe Bay Unit At top of productive interval 8. Well Number Number 2S100302630-277 669' NSL, 2299' WEL, SEC. 06, T11N, R13E, UPM N-23A At total depth 9. Approximate spud date Amount $200,000.00 50' NSL, 877' WEL, SEC. 06, T11 N, R13E, UPM 01/27/97 12. Distance to nearest property line113. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) ADL 028260, 4028'I No Close Approach 2560 12014' MD / 8774' TVD 16. To be completed for deviated wells 17. Anticipated pressure {see 20 AAC 25.035 (e) (2)} Kick Off Depth 10036' MD Maximum Hole Angle 89.7° Maximum surface 3300 psig, At total depth (TVD) 8800' / 4390 psig 18. Casing Program Setting Depth Size Specifications Top Bottom Quantity of Cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 6" 4-1/2" 12.6# L-80 IBT-Mod 2128' 9886' 8378' 12014' 8774' 220 sx Class 'G' 19. To be completed for Redrill, Re-entry, and Deepen Operations. Present well condition summary JAN Z. l 11997 Total depth: measured 11850 feet Plugs (measured) true vertical 9174 feet Aiaska0il & Gas Cons. C~missi0n Effective depth: measured 10807 feet Junk (measured) true vertical 9144 feet Casing Length Size Cemented MD TVD Structural Conductor 80' 20" 8 cu yds 110' 110' Surface 2739' 13-3/8" 3981 cu ft 2769' 2688' Intermediate 9974' 9-5/8" 2039 cu ft 10004' 8530' Production Liner 1087' 7" 500 cu ft 9763' - 10850' 8326' - 9174' Perforation depth: measured 10190'- 10220' true vertical subsea: 8609' 8634' 20. Attachments [] Filing Fee [] Property Plat [] BOP Sketch [] Diverter Sketch [] Ddlling Program [] Drilling Fluid Program [] Time vs Depth Plot [] Refraction Analysis [] Seabed Report [] 20 AAC 25.050 Requirements Contact Engineer Nam mber: ~a)/id Nakamura, 564-5606 Prepared By Name/Number: Terrie Hubble, 564-4628 th f r g ~n ~ t e and correct to the best of my knowledge ~'% 21. I hereby certify that ' ' ' Signed ~~n~ !~_. ~~ Paul Prince Title Senior Drilling Engineer Date \ z ~/, c[':~L. Commission Use Only Permit Number I APl Number I Approval Date See cover letter ~;~7" '/~-"'I 50- O .7_.. ~'-- .2... / 7.~---~- ~:~-'JI /' "C:~//' '"' ~"7 for other requirements Conditions of Approval: Samples Required [] Yes ~ No Mud Log Required [] Yes ;1~ No Hydrogen Sulfide Measures 'l~'Yes [] No Directional Survey Required ~1~ Yes [] No Required Working Pressure for BOPE [] 2M; []3M; tj~5M; [] 10M; [] 15M Other: ~Ji'lgilqal ~i~.qe~ J:Jy by order of/ ~, (~"~ Approved By 1").2vid W_ .!nh.-.~tnn Commissioner the commission Date 1-o~[- Form 10-401 Rev. 12-01-85 Submit In Triplicate S-7~'7F u,i- ,~L.,~,-,,~, ALASKA O" AND GAS CONSERVATION COMt' ',SION APPLIC TION FOR SUNDRY APPROgAL 1. Type of Request: [] Abandon [] Suspend [] Plugging [] Time Extension [] Perforate [] Alter Casing [] Repair Well [] Pull Tubing [] Variance [] Change Approved Program © Operation Shutdown [] Re-Enter Suspended Well ~ Stimulate [] Other Plug Back for Sidetrack 2. Name of Operator 5. Type of well: 6. BP Exploration (Alaska) Inc. ~ Development ~ Exploratory 7. 3. Address ~ SLr~,. gr~pn~c P.O. Box 196612, Anchorage, Alaska 99519-6612 ,~Service 4. Location of well at surface 8. Datum Elevation (DF or KB) KBE = 74.42' Unit or Property Name Prudhoe Bay Unit Well Number N-23i 2151' NSL, 568' EWL, SEC. 08, T11N, R13E, UPM At top of productive interval 4729' SNL, 2336' WEL, SEC. 06, T11N, R13E, UPM At effective depth 4356' SNL, 2508' WEL, SEC. 06, T11 N, R13E, UPM At total depth 4328' SNL, 2536' WEL, SEC. 06, T11N, R13E, UPM 9. Permit Number 87-47 10. APl Number 50-029-21725 ii. Field and Pool Prudhoe Bay Field / Prudhoe Bay Pool 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Structural Conductor Surface Intermediate Production Liner 11850 feet 9174 feet 10807 feet 9144 feet Length 80' 2739' 9974' 1087' r~.f~ r'~ugs (measured) Junk (measureC) Size 20" 8 cu ');ds 13-3/8" 398 icu ft 9-5/8" 2039 cuft 7" 500 cu ft Cemented MD TVD~-~ ~:0¢.. :~.,: .... 110' · ~-.. 2769' _ 2.,.t~ lOOO4'3~ '\ ~ 853o' 9763'- 0850'. / Perforation depth: measured true vertical 10190'-10220' Squeezed: 10220'-10320', 10344'-10349', 10359'-10364' subsea: 8609'8634' Tubing (size, grade, and measured depth) 7", 26#, L-80 / IJ4S to 9733' Packers and SSSV (type and measured depth) 9-5/8" Baker SABL packer w/25' seal assembly at 9747' 13. Attachments [] Description summary of proposal [] Detailed operations program [] BOP sketch 14. Estimated date for commencing operation January 19, 1997 16. If proposal was verbally approved Name of approver Date approved 15. Status of well classifications as: [] Oil [] Gas [] Suspended Service Water Injection Contact Engineer Nam. ?~Number: f~avid Nakarnura, 564-5606 Prepared By Name/Number: 17. I hereby certify that t~e//fore, gojn/;l ~/4rue~and correct to the best of my knowledge ~ ~/'lf~/,~ ? Signed ,~"1~.~. - _ PaulPrince Title Senior Drilling Engineer Terrie Hubble, 564-4628 Commission Use Only Conditions of Approval: Notify Commissio. p-so representative may.witness i Approval No~,,')_. ~ '/" BOP Test ;~ Location clearance ' '"' '" ~al in~__ Subsequent form required 10- /"7Lo'3 Original ned B D Approved by order of the Commissio~6ft"~-.~-.-..~ ,// "g ¥ Commissioner ate Form 10-403 Rev. 06/15/88 _.,.;,,'~d VV. Johnston . Submit In Triplicate, Approved CoPy I Well Name: I N-23A Redrill Plan Summary Type of Well (producer or injector): I WAG Iniector Surface Location' 2151' FSL 568' FWL Sec 08 T11N R13E Start of Horizontal Location' 669' FSL 2299' FEL Sec 06 T11N R13E End of Horizontal Location: 50' FSL 877' FEL Sec 06 T11N R13E I AFL Number: I 4P0890 I Estimated Start Date: I MD: 112014' I Rig: J Nabors 18E January 27, 1997 I I Operating days to complete: I 21 I mvo= I s774' I I ET-GL I KBE: 29.7' 73.64' Well Design (conventional, slimhole, etc.) I High Angle Sidetrack Objective: I High angle sidetrack to Zone 4 for WAG Iniection I Casin¢/'l'ubinq Proqram: Hole Size Csg! Wt/Ft Grade Conn Length Top Btm Tbg O.D. MD/TVD MD/I'VD 6" 4-1/2" 12.6# L-80 IBT- 2128' 9886'/8378' 12014'/8774' MOD Tubing 4-1/2" 12.6# L-80 IBT- 9886' Surface 9886'/8378' MOD Cement Calculations: I Liner Size: 14-1/2" liner IBasis:I 40% open hole excess, 80' shoe joint and 150' liner lap Total Cement Volume: I 220 I sxs of 15.7 ppg Class G Blend @ 1.1 9 ft3/sx Mud Program: Sidetrack drilling fluid will be used as a milling fluid. Special design'considerations I New Sh~ardril-n mud system will be used to drill 6" high angle I interval Depth Density Marsh Yield 10 sec 10 rain pH Fluid (PPG) Viscosity Point gel gel Loss 9365' 8.8-9.0 50-60 20-35 8-12 18-24 8.5-9.0 <6 12344' 8.8-9.0 50-60 20-35 8-12 18-24 8.5-9.0 <6 Hazards/Concerns Lost Circulation a possibility due to overbalance in Sadlerochit. Differential sticking possible with overbalance situation. Perform/report daily checks on KCI concentrations in Sheardril-n system. High torque may be experienced and should be countered with lubricants KEEP THE CHLORIDE LEVELS BELOW 12,000 PPM. N-23A Permit Information Page 1 Directional: ~MD l'Maximum Hole An~lle: I 89'7° ~ Close Approach Well: No Close Approach Wells Well Control: Well control equipment consisting of 5,000 psi W.P. pipe rams, blind 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 AOGCC. Shared Services Drilling Contact: Contact David Nakamura at (907) 564-5606 to answer any questions concerning Permit to Drill. Drilling Hazards: · Maximum anticipated BHP: · Maximum surface pressure: · Planned Completion Fluid: a. 3784 psi @ 8800' TVDss (8.3 ppg EMW) 2904 psi @ 8800' TVDss 8.5 ppg filtered sea water The drilling fluid program and surface system will conform to the regulations set forth in 20AAC25.003. b. Maximum surface pressure is based on BHP and a full column of gas to TD (0.10 psi/ft). c. The most recent H2S level on this well indicated 277 ppm H2S (maximum 277 ppm). Proper H2S precautions must be followed. d. No hydrocarbon-bearing zones expected above the Sag River formation. e. Stuck pipe and lost circulation problems have occurred on N Pad in the Sag River, Shublik and Sadlerochit formations. Faults have shown to be highly conductive on N Pad. N-23A Permit Information Page 2 N-23A Operations Summary Pre-Ricj Operations Pull the 7" SSSV. Valve is set at 2074' MD. Test the 9-5/8" mandrel packoff to 5,000 psi. Notify David Nakamura at 564-5606 (MB 8-1) of the results of the packoff test or if any concerns arise. . Notify an AOGCC representative prior to commencing plug-back operations. RU CT unit. RIH with coiled tubing to 10308' MD - top of sandback at 10308' MD (bottom perforation at 10220' MD). Lay a cement plug from 10308' to 10070' MD. This will leave cement about 104' above the top perforation (top perforation at 10174' MD). NOTE: Top of cement must be to at least 10074' MD to comply with State regulations of cement being 100' MD above perforations. 0 With an AOGCC representative on location to witness the operation, R/U slickline and tag the top of the cement to verify cement top is at least at 10074' MD. . RIH and cut the 7" L-80 tubing with a jet cutter in the middle of a full joint of tubing above the production packer at approximately 9620' MD. 5. Displace the tubing and wellbore to 8.5 ppg seawater. 6. Freeze protect top 2200' MD with diesel. 7. Bleed tubing and annuli pressures to zero. 8. Set BPV in the tubing hanger and test from below to 1000 psi. Secure well. 9. Remove the well house and flowlines. If necessary, level the pad and dig out the cellar. Rig Operations 1. MIRU drilling rig. Pull BPV. Circulate out freeze protection from inner and outer annuli and recover for future use. Test 9-5/8" mandrel packoff to 5000 psi. 3. Install a TWC and test from below to 1000 psi. N/D the production tree. . N/U BOP. Test BOP to 250/5000 psi against TWC. Test annular preventer to 250/2500 psi. Remove TWC. Send adapter flange and tree to DSM for inspection and repair. . , Pull and lay down the 7" tubing. (Tubing should be jet cut at 9620' MD. Check the location and exact depth of the cut on production handover form) Inspect for NORM. Label tubing as it is laid down with well name and joint number. Install thread protectors on pipe which upon visual inspection appears to be re-usable. If tubing is salvageable, send tubing to Tuboscpoe for inspection. Replace 9-5/8" mandrel if failed test. RIH with overshot assembly. Engage anchor latch at -9620' MD. ~Ja~J~~er "SAB" production packer. N-23A Permit Information Page 3 , . . 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. RIH with PRT assembly. Mill up Baker "SAB" packer at ~ 9661' MD. CBU - beware of any trapped gas below the packer. POOH with packer and tailpipe assembly - Baker packer has a millout extension, therefore, we should be able to mill and fish the packer with the PRT. RIH with bridge plug. Set bridge plug at approximately 10047' MD. This will place the bridge plug 3' below a 7" casing collar. The whipstock will begin to mill out the casing 20' above the bridge plug. Shut in well and test casing to 4000 psi for 30 minutes to ensure casing integrity. NOTE: The inner annulus failed a 2500 psi pressure test on 12/9/96. Therefore, if the casing test fails, will set bridge plug then RIH with 7" seal assembly and 9-5/8" RTTS to test 9-5/8" x 7" casing strings to identify the location of the leak followed by a Schlumberger USIT log. P/U and RIH slowly with a Baker Anchor/VVhipstock assembly with MWD. MWD will be used to align the whipstock to 30° left of highside. The bottom trip anchor will be set by slacking off on the bridge plug. Continue RIH 40' above bridge plug. At this time start pumps and pulse MWD to check whipstock face orientation. Using MWD, align whipstock face to 30° right of high side making sure all excess torque is worked out of string. When proper orientation is achieved slack off with pumps watching for undesired whipstock rotation until bridge plug is tagged. At this point slack off 10 klbs to shear run-in pins on anchor. After pins are sheared pick up 10 klbs over to assure anchor is set. Slack of +45 klbs to shear whipstock from mill. Once sheared from the whipstock, displace well with Sheardril-n drilling fluid. Begin cutting window using only enough WOB and RPM to cut window as smoothly as possible. Continue milling casing and try to make at least 22' of formation, approximately 38' total of milling and drilling from the top of the whipstock. This will allow the full-sized watermelon mill to pass through the window all the way down to the bottom of the window effectively reaming the sidetracked interval. POOH after ensuring the hole is clean and free of metal cuttings. RIH with an 6" steerable assembly with MWD. Kickoff and directionally drill to Zone 4. Continue drilling 6" horizontal hole to TD. RIH with 4-1/2", 12.6#, L-80 solid liner, 7" x 4-1/2" packer/hanger spaced out for a 150' lap and a 2-3/8" inner wash string. Cement liner in place through the inner wash string with the total cement volume based on 40% excess in open hole, 150' lap and 80' shoe volume. Displace the cement with seawater. Bump plug. Set and test liner hanger/packer with 3500 psi. Release from liner top packer/hanger and continue displacing well to seawater. POOH, LD 2-3/8" inner wash string. RIH with 2-3/4" drillpipe conveyed pen' guns and perforate 4-1/2" liner. POOH and lay down guns. RIH with 4-1/2", 12.6#, L-80 completion with SSSV and 7" x 4-1/2" packer. Set TWC valve. Test to 1000 psi. ND BOPs. NU tubing head adapter and tree. Test same to 5000 psi. Pull TVVC valve. Freeze protect well. Set packer and test tubing to 4000 psi. Test tubing annulus to 4000 psi. Set BPV. Release rig. Complete appropriate documentation and handover to Production. N-23A Permit Information Page 4 jan-20-97 04:19P Anad~ill DPC 907 344 2160 P.07 iii m i i __m _ mm N-23A (P6) PLAN V[EW CLOSURE ..... : 3498 feet at Azimuth 335.40 DECLINATION.: +28.439 (E) SCALE .......: ~ inch = 300 feet DRAWN .......: l§ Jan 1997 Marker Ident i f 1cat ion MD N/S E/W B) BUILO OFF WHIPSTOCK $0036 3609 2B74 C) CURVE 3~.5/t00 ~0046 3614 N 2876 0) E~ BUILD ~F W.S. 10046 3614 2876 F) ~VE 3~.5/t00 $0~37 377~" ~885 6) CURVE ~5/t00 ~0~65 3800. ~eSO J) TARGET END / TD 12014 3t80 N t456 Anadr J ] ] $chYumberger 3300 3150 3000 2850 2700 2550 2400 2250 2100 1950 1800 lB50 1500 1350 t200 <- WEST SHARED' CES i ii iiiiii i [ II i DR"T L-I", T NC. i iii I i ii · III Ii · ii I Ana~rJ ]? $chluml~erger _ _ I i m ! I II I N-23A (PC) VERTICAL SECTION VIEW III _ k I I I Section at: t13.52 &NADP:ILL AKA-DP(: Dep Scale.: 1 inch -- 200 feet I F()R P ~RMITTI~IG __ I III II III II I / B} BUILD OFF WHIPSTOCK 10036 B557 -4075 32 ~0-- --- / "% _., , C) CURVE 32.5/t00 ~0046 B565 -4079 33. =--~/ .....~' ' , " j Ol END BUILD OFF W,S. 10237'0046 B6538565-4079 E] END 32,5/~00 CURVE ~0235 'B653 -4t50 89.; J F) CURVE 32,5/100 89.; O- "%- %mm ........................................ ~ ................. 6J CURVE 25/~00 ~0265 8654 -4t57 86.~ , , , , , j ~ . . ~ 'J H) TARGET STA~i ~0265 8654 -4157 86.~ ]) END 25/100 CURVE ~0703 B693 -3887 86.~ 0 .................. JJ TARGET END / TD 12014 B774-2604 86.~ .... 27 g! 2 78 78 -4200 -4t00 -4000 -3900 -3{300 -3700 -3600 -3500 -3400 -3300 -3200 -3|00 -3000 -2900 -2BO0 -2700 -2§00 -2500 -e400 Sect ion Departure m imll n ,,, I Iiii IIII II m · III im im I II I III1! _in i iiiL i III n i iml _ I i i_ i i. in i · m i I 0 I 0 J, Anadrill Schlumberger Alaska District 1111 East 80th Avenue Anchorage, AK 99518 (907) 349-4511 Fax 344-2160 DIRECTIONA~ WELL PLAN for $}~LRED SERVICES DRILLING Well ......... Field ........ : Prudhoe Bay, N-Pad Computation..: Minimum Curvature Units ........ : FEET Surface Lat..: 70.32066622 N Surface Long.: 148.91025996 W Legal Description Surface ...... : 2150 FSL 4712 FEL S08 T11N R13E UM Tie-in ~urvey: 460 FSL 2285 FEL S06 T11N R13E UM Target Start.: 669 FSL 2299 FEL S06 T11N R13E L1M Tgt End / BNL: 50 FSL 877 FEL S06 TllN R13E UM LOCATIONS - ALASKA Zone: 4 X-Coord Y-Coord 634413.00 5968o55.oo~ 6314B3.S0 Sg?ZS93.Z¢ 631465.65 5971802,51 632900,40 597~208.s0 PROPOSED WELL PROFILE STATION M~ASUR~ INCL~ KIN~AR TJD TJB TIE-IN SURVEY 9999.22 32.27 SAG RIVER 10024,47 32,70 DIRECT/ON AZ I MUTH 337.70 337.55 mmmmumlmmmtmmmm=m TVD SUB-SEA 7253,64 7180.00 7973.64 7900.00 8388.64 8315.00 8525.34 84S1.70 8,5'46.64 84?3.00 SECTION DEPART -4060.46 -4070.20 BUILD OFF WHIPSTOCK CURVE 32.5/100 END BUILD OFF W.S, SHUBLIK 10036.40 32.91 10046.40 33.12 10046.40 33,12 10050.00 34.11 10076.06 41.48 10100.00 48,52 337.47 337.]0 337.70 338.85 345,68 350.38 8556.67 8565.05 8565.05 8568.05 8588.64 8605.S~ 8483.03 8491.~i 8491.41 8494.41 8515.00 8531.92 -4074.85 -4078.76 -4078.76 -4080.18 -4090.63 Prepared ..... : 18 Jan 1997 Ver~ sect az,; 113.52 KB elevation.: 73.64 ft Magnetic Dcln: +28.439 (E) Scale Factor.: 0.99992052 Convergence..: +1.02610464 ANADRILL AKA-DPC APPROVED FOR PERMITTING ONLY PLAN mmlmm3mmm~ummmmntmmmmm mmmmmmmmmtaamtmmnmmmmm mmmm mmmm COORDINATES-FROM ~ Zone 4 T~L DL/ WELLHE~ X Y FACE 100 3590.32 N 286S.90 W 631483.50 5971~93.14 11L 3602.86 N 2871.06 W 631478.1'1 5971605.58 llL 1.74 ,, 3608.83 N 2873.53 W 631475.53 5971611.51 30R 1.74 3613,87 N 2875.61 W 631473.37 5971616.51 33R 2.50 3613.87 N 2875,61 W 631473.37 59~1616.51 33R 2.50 3615.72 N 2876.35 W 631472.59 5971618.34 32R 32.50 3630.92 N 2881.13 W 631467.54 5971633.46 27R 32.50 -4100.41 3647.47 N 2884.59 W 631463,78 5971649.94 24R 32.50 0 (Anadrill (c)97 N23AP6 3.0C 2:35 PM P) N-13A (P6~ STATION MEASURED INCLN IDENTIFICATION DEPTH ANGLE mlmmmmm{~mlxmmmmmm{m mmmm{mlm mmmmtl 10150.00 63.65 CURRENT GOC 10196.42 77.95 10200.00 $9.06 END 32.5/100 CURVE 10234.60 89.78 CURVE 3~.5/100 10236.94 89,78 CURVE 25/100 TARGET START TSAD/TZ4B TSADEN END 25/100 CURVE COWC TARGET END / TD TZ3 TZRC TZ2B TOP HOT / OOWC 10250.00 88.25 10265.08 86.50 10265.08 86,50 10265.08 86.50 10265.08 86.50 10300.00 85.79 10350,00 84.94 10400.00 84.33 10450.00 83,98 10500.00 83.93 10550.00 84.16 10600.00 84,68 10650.00 85.44 10700.00 86.42 10703,18 86.49 11279.82 86.49 12014.48 86.49 (Anadrill (c)97 N23AP6 3.0C 2:35 PM P) PROPOSED WELL PROFILE {z~j{mm.m mlmlmilllmmmmmlll DIRECTION VER~IC~-DEPT~$ AZIMUTH TVD SUB-SEA 357.56 8633.41 8559.77 2,68 8648,64 6575.00 3,04 8649.35 8575.71 6,46 8652.72 8579.08 6.46 8652.72 8579.08 mmmmmmj! SECTION DEPART -4120.58 -4137.86 -4139.10 -4150.15 -4150,84 10.42 8652.95 8579.31 -4154.23 15.00 8653.64 8580.00 -4157.06 15,00 8653,64 8580,00 -4157.06 15.00 8653.64 8580.00 -4157.06 15.00 8653,64 8580.00 -4157,06 23.72 8655.99 8582.35 -4159.58 36.23 8660.05 8586.41 -4153.99 48.77 8664.75 8591.11 -4i37,83 61.33 8669.86 8596.22 -4111.87 73,90 8675.15 860i.51 -4077.33 86.47 8680.35 8606,71 -4035,87 99.02 8685,23 8611.59 -3989.43 111.54 8689.5.6 8615.92 -3940.23 124.04 8693,12 8619.48 -3890.60 12~.83 8693.32 8619.68 -3887.48 124.83 124.83 8728.64 8655,00 8773,64 8700.00 8823.64 8750.00 8853,64 8780.00 8893.64 8820.00' -3323.10 -2604.07 9088.64 9015.00 Jan 1997 Page 2 COORDINATES-FROM A~2%SKA Zone 4 TOOL DL/ WELLHEAD X ¥ FACE 100 mm~x~m~ m~mm~m mmm~m m~m~ mmm~ mmm~ 3688.60 N 2888.$0 W 631458,94 5971690.98 20R 32.50 3732.3~ N 2888.52 W 631458.33 5971734.68 18R 32.50 3735.81 N 2888.35 W 631458.45 5971738.19 18R 32.50 3770.06 N 2885,49 W 631460.69 5971772.49 }{S 32.50 3772.40 N 2885,23 W 631460.91 5971774,83 111R 0.00 3785.31 N 2883.32 W 631462.59 5971787.77 111R 32.50 3800.00 N 2880.00 N 631465,64 5971802.51 95R 32.50 3800.00 N 2880.00 W 631465.64 5971802.51 95R 32.50 3800.00 N 2880.00 W 631465.64 5971802.51 95R 32.50 3800.00 N 2880.00 W 631465.64 5971802,51 95R 32.50 3832~84 N 2868.46 W 631476.59 5971835.55 94R 25.00 3875.92 N 2843.62 W 631500.66 5971879.07 93R 25.00 3912.55 N 28i0.05 W 631533.56 5971916.29 92R 25.00 3940.98 N 2769.37 W 631573.73 5971945,44 91R 25.00 3959.88 N 2~23,49 W 631619.26 5971965,15 90R 25.00 3968.33 N 2674,58 W 631668.00 5971974.49 88R 25.00 3965,95 N 2624.98 W 631717.6~ 5971972.99 87R 25.00 3952.85'N 2577.02 W 631765.81 5951960.75 86R 25,00 3929,64 N 2532.99 W 6318107~5 5991938.34 8SR 25.00 3927.85 N 2530.38 w 631812.~9 5971936.59 HS 25.00 3599.13 N 2057.92 W 632291.13 5971616.41 HS 0.00 3180,33.N 1456.00 W 632900.4% 5971208,50 O,00 ANADRILL AKA-DPC APPROVED FOR PERMITI'ING ONLY 0 ~D O ,. ___, ; .~_~. /0t/10t97 / I04.178 VENDOR I I I "' 1,0 9,9 ? CKC 1 q q 9 7 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 4E ATTACHED CHECK IS IN PAYMENT FOR ITEMS DESCRIBED ABOVE. ,,,,"LL PERMIT CHECKLISToo. Y F ELD POOL PROGRAM: expr~ dev [] redrl~serv~ wellbore segr] ann disp para reqr] ADMINISTRATION ENGINEERING 1. Permit fee attached .................. 2. Lease number appropriate ............... 3. Unique well name and number .............. 4. Well located in a defined pool ............. 5. Well locate~ proper distance from drlg unit boundary. . 6. Well located proper distance from other wells ..... 7. Sufficient acreage available in drilling unit ..... 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 ....... REMARKS 14. Conductor string provided ................ Y N 15. Surface casing protects all known USDWs ......... Y N 16. CMT vol adequate to circulate on conductor & surf cng. . Y N 17. CMT vol adequate to tie-in long string to surf cng . . . Y N 18. CMT will cover all known productive horizons ...... ~ N 19. Casing designs adequate for C, T, B & permafrost .... ~J N 20. Adequate tankage or reserve pit ............. ~ N 21. If a re-drill, has a 10-403 for abndnmnt been approved.~ N 22. Adequate wellbore separation proposed .......... ~ N 23. If diverter required, is it adequate .......... .~-~----N--~'~ 24. Drilling fluid program schematic & equip list adequate .~ N 25. BOPEs adequate ............. ,~.. ....... ~ N 26. BOPE press rating adequate; test to .'~ ~ psig.~ N 27. Choke manifold complies w/API RP-53 (May 84) ...... 28. Work will occur without operation shutdown ....... ~ N 29. Is presence of H2S gas probable ............ ~ N GEOLOGY 30. Permit can be, issued w/o hydrogen sulfide measures .... Y N//_ 31. Seismic analysis of shallow gas zones ......... Data presented on potential overpressure zones ..... Y/~ 32. 33. Seabed condition survey (if off-shore) ....... ~ Y N 34. Contact name/phone for weekly progress reports . . ./~. . Y N [exploratory only] GEOLOGY: ENGINEERING: COMMISS ION: · mcm ~',6~ ~----'"- Comments/Instructions: HOW/dlf- A:\FORMS\cheklist rev 01/97 Well HistorY File APPENDIX Information of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history file. To improve the readability of the Well History file and to simplify finding information, information of this nature is accumulated at the end of the file under APPENDIX. No special effort has been made to chronologically organize this category of information. Sperry-Sun Drilling Services LIS Scan Utility Thu Jun 19 11:43:28 1997 Reel Header Service name ............. LISTPE Date ..................... 97/06/19 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Previous Reel Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Tape Header Service name ............. LISTPE Date ..................... 97/06/19 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Previous Tape Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Physical EOF Comment Record TAPE HEADER PRUDHOE BAY UNIT MWD/MAD LOGS WELL NAME: API NUMBER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: MWD RUN 2 AK-MW-70030 J. FOLEY M. JACKSON Date N-23A 500292172501 BP EXPLORATION (TALASKA), INC. SPERRY-SUN DRILLING SERVICES 19-JUN-97 MWD RUN 3 AK-MW-70030 J. FOLEY M. JACKSON MWD RUN 4 AK-MW-70030 J. FOLEY D. HIME JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: MWD RUN 5 AK-MW-70030 J. FOLEY B. MCMANUS 8 liN 13E 2151 568 74.70 73.20 GROUND LEVEL: WELL CASING RECORD 1ST STRING 2ND STRING 3RD STRING PRODUCTION STRING REMARKS: 43.80 OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 6.000 11852.0 1. ALL DEPTHS ARE MEASURED DEPTHS (MD) UNLESS OTHERWISE NOTED. 2. ALL GAMMA RAY DATA (SGRD) IS DOWNHOLE RECORDED. 3. MWD RUN 1 IS DIRECTIONAL ONLY AND IS NOT PRESENTED. 4. MWD RUNS 2 THROUGH 5 ARE DIRECTIONAL WITH SCINTILLATION TYPE GAMMA RAY (NGP) . 5. THIS WELL REACHED A TOTAL DEPTH (TD) OF 11852'MD, 8738'TVD. SROP = SMOOTHED RATE OF PENETRATION WHILE DRILLING. SGRD = SMOOTHED GAMMA RAY. $ File Header Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.000 Comment Record FILE HEADER FILE NUMBER: 1 EDITED MERGED MWD Depth shifted and clipped curves; all bit runs merged. DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH GR 10006.5 11793.0 ROP 10064.0 11854.0 $ BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) BASELINE DEPTH 10006 5 10265 10280 10283 10286 10336 10338 10339 10342 10345 10347 10350 10359 10362 10365 GR 10016.5 5 10275.5 0 10285.5 0 10288.0 5 10293.0 5 10337.0 0 10340.0 5 10341.5 0 10345.0 5 10348.5 5 10351.0 5 10352.5 5 10363.0 0 10367.0 5 10370.5 EQUIVALENT UNSHIFTED DEPTH --- 20372 10374 10376 10382 10388 10390 10391 10394 10406 10416 10418 10422 10429 10449 10454 10466 10468 10490 10678 10679 10682 10689 10692 10695 10699 10701 10706 10707 10797 10804 10819 10823 10827 10832 10836 10840 10847 10855 10857 10877 10881 10889 10927 10930 10938 10949 10956 11114 11128 11140 11219 11222 11233 11240 11256 11370 11374 11379 11384 11419 11475 11476 11478 11479 5 5 5 0 5 0 5 5 5 5 5 0 0 5 5 0 .5 0 0 5 0 0 0 5 5 5 0 0 5 5 0 0 5 0 0 0 0 0 5 0 5 5 0 5 5 5 5 5 5 5 0 5 5 0 0 0 5 0 0 5 0 5 5 0 10375.0 10377.5 10383.0 10387.5 10394.0 10395.O 10396.0 10400.0 10412.5 10423.0 10425.0 10428 0 10433 5 10456 0 10462 0 10473 0 10474 5 10494 5 10682 5 10684.0 10687 5 10695 0 10697 5 10700 0 10703 5 10705 5 10711 5 10714 0 10797 5 10804.5 10833 5 10837 0 10841 0 10848 0 10851 5 10853 0 10856 0 10859 0 10865 0 10881 0 10885.0 10890.5 10929.0 10933.0 10939.5 10952.5 10959.0 11118.0 11131.0 11143.0 11222.0 11224 0 11238 0 11242 0 11259 0 11373 5 11378 0 11382 5 11386 5 11423 5 11479 0 11480 5 11481 5 11482 0 I1500.0 11506.0 11513.5 11526.5 11531 0 11550 0 11554 5 11611 0 11614 5 11618 5 11626 5 11628 0 11631 0 11652 5 11653 5 11662 0 11672 0 11677 0 11854 0 $ 11502 11507 11515 11528 11534 11553 11556 11610 5 11615 5 11619 5 11628.0 11630.5 11633.0 11653.0 11655.0 11661.5 11670.0 11674.5 11851.5 MERGED DATA SOURCE PBU TOOL CODE BIT RUN NO MWD 2 MWD 3 MWD 4 MWD 5 $ REMARKS: MERGED MAIN PASS. $ MERGE TOP MERGE BASE 10073.0 10533.0 10533.0 10706.0 10706.0 10900.0 10900.0 11852.0 Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .liN Max frames per record ............. Undefined Absent value ...................... -999.25 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD FT/H 4 1 68 4 2 GR MWD AAPI 4 1 68 8 3 First Name Min Max Mean Nsam Reading DEPT 10006.5 11854 10930.2 3696 10006.5 RO? 10.05 476.95 99.8868 3581 10064 GR 23.37 970.25 54.8745 3574 10006.5 Last Reading 11854 11854 11793 First Reading For Entire File .......... 10006.5 Last Reading For Entire File ........... 11854 File Trailer Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.002 Physical EOF File Header Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.001 Corament Record FILE HEADER FILE NUMBER: 2 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 2 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10016.5 10476.0 ROP 10074.0 10532.5 $ LOG HEADER DATA DATE LOGGED: il-FEB-97 SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: .0 MAXIMUM ANGLE: .0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT) : BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3) : MSC 1.32 DEP 2.41, NGP 5.74 MEMORY 10533.0 10073.0 10533.0 TOOL NUMBER NGP 279 6.000 6.0 .00 .0 .0 0 .0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MA_X CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .liN Max frames per record ............. Undefined Absent value ...................... -999.25 Depth Units ....................... Datum Specification Block sub-type...0 .000 .000 .000 .000 .6 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 GR MWD 2 AAPI 4 1 68 4 2 ROP MWD 2 FT/H 4 1 68 8 3 .0 First Name Min Max Mean Nsam Reading DEPT 10016.5 10532.5 10274.5 1033 10016.5 GR 24.3 616.63 90.9725 920 10016.5 ROP 10.05 476.95 111.72 918 10074 Last Reading 10532.5 10476 10532.5 First Reading For Entire File .......... 10016.5 Last Reading For Entire File ........... 10532.5 File Trailer Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.003 Physical EOF File Header Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.002 Comment Record FILE HEADER FILE NUMBER: 3 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 3 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10475.5 10649.0 ROP 10534.0 10706.0 $ LOG HEADER DATA DATE LOGGED: 12-FEB-97 SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: 91.0 MAXIMUM ANGLE: 90.6 MSC 1.32 DEP 2.41, NGP 5.74 MEMORY 10706.0 10533.0 10706.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GA/V94A PROBE $ TOOL NUMBER NGP 285 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): 6.000 6.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3) : RESISTIVITY (OHMS4) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: LSND 8.80 55.0 8.8 29000 6.8 .000 .000 .000 .000 44.5 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : .6 REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .liN Max frames per record ............. Undefined Absent value ...................... -999.25 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 GR MWD 3 AAPI 4 1 68 4 2 ROP MWD 3 FT/H 4 1 68 8 3 First Name Min Max Mean Nsam Reading DEPT 10475.5 10706 10590.8 462 10475.5 GR 23.37 445.94 33.1662 348 10475.5 ROP 20.07 226.93 92.6841 345 10534 Last Reading 10706 10649 10706 First Reading For Entire File .......... 10475.5 Last Reading For Entire File ........... 10706 File Trailer Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.004 Physical EOF File Header Service name ............. STSLIB.004 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.003 Comment Record FILE HEADER FILE NUMBER: 4 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 4 DEPTH INCREMENT: .5000 FILE SUmmARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10649.5 ROP 10709.5 $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP 10837.0 10900.0 NATURAL GAMMA PROBE BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3) : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): I~JD AT I~LAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: I~JD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN) : EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .liN Max frames per record ............. Undefined Absent value ...................... -999.25 Depth Units ....................... Datum Specification Block sub-type...0 13-FEB-97 MSC 1.32 DEP 2.41, NGP 5.74 MEMORY 10900.0 10706.0 10900.0 85.6 86.9 TOOL NUMBER NGP279 6.000 6.0 LSND 8.70 56.0 8.6 31000 8.9 .000 .000 .000 .000 49.2 .6 Name Service Order Units Size Nsam Rep Code Offset Channel DEFT FT 4 1 68 GR MWD 4 AAPI 4 1 68 ROP MWD 4 FT/H 4 1 68 0 1 4 2 8 3 Name Min Max Mean Nsam DEFT 10649.5 10900 10774.8 502 GR 23.52 112.17 38.5778 376 ROP 14.6 243.26 72.2706 382 First Last Reading Reading 10649.5 10900 10649.5 10837 10709.5 10900 First Reading For Entire File .......... 10649.5 Last Reading For Entire File ........... 10900 File Trailer Service name ............. STSLIB.004 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.005 Physical EOF File Header Service name ............. STSLIB.005 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.004 Comment Record FILE HEADER FILE NUMBER: 5 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 5 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10838.0 11790.5 ROP 10899.5 11851.5 $ LOG HEADER DATA DATE LOGGED: 15-FEB-97 SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MSC 1.32 DEP 2.41, NGP 5.74 MEMORY 11852.0 10900.0 11852.0 MINIMUM A~GLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL G~ PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT) : BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3) : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ) : REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .liN Max frames per record ............. Undefined Absent value ...................... -999.25 Depth Units ....................... Datum Specification Block sub-type...0 85.5 88.7 TOOL NLrMB ER NGP 325 6.000 6.0 QUIKDRILN 8.80 55.0 8.8 30600 6.0 .000 .000 .000 .000 56.2 .6 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 GR MWD 5 AAPI 4 1 68 4 2 ROP MWD 5 FT/H 4 1 68 8 3 First Name Min Max Mean Nsam Reading DEPT 10838 11851.5 11344.8 2028 10838 GR 24.92 970.25 45.1176 1906 10838 ROP 21.88 437.63 100.871 1905 10899.5 Last Reading 11851.5 11790.5 11851.5 First Reading For Entire File .......... 10838 Last Reading For Entire File ........... 11851.5 File Trailer Service name ............. STSLIB.005 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 97/06/19 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.006 Physical EOF Tape Trailer Service name ............. LISTPE Date ..................... 97/06/19 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Next Tape Name ........... UNKNOWN Comments ................. STS LIS Writing Services Reel Trailer Service name ............. LISTPE Date ..................... 97/06/19 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Next Reel Name ........... UNKNOWN Comments ................. STS LIS Writing Services Library. Library. Scientific Technical Scientific Technical Physical EOF Physical EOF End Of LIS File * ALASKA COMPUTING CENTER * * ............................ * ....... SCHLUMBERGER ....... * ............................ COMPANY NAME : BP EXPLORATION WELL NAME : N-23A FIELD NAME : PRUDHOE BAY BOROUGH : NORTH SLOPE STATE : ALASKA API NOWi~ER : 50-029-21725-01 REFERENCE NO : 97099 LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: **** REEL HEADER **** SERVICE NAME : EDIT DATE : 97/05/12 ORIGIN : FLIC REEL NAME : 97099 CONTINUATION # : PREVIOUS REEL : COGENT : BP EXPLORATION, N-23A, PRUDHOE BAY, API #50-029-21725-01 **** TAPE HEADER **** SERVICE NAME : EDIT DATE : 97/05/12 ORIGIN : FLIC TAPE NAME : 97099 CONTINUATION # : 1 PREVIOUS TAPE : CO~94ENT · BP EXPLORATION, N-23A, PRUDHOE BAY, API #50-029-21725-01 TAPE HEADER Prudhoe Bay OPEN HOLE WIRELINE LOGS WELL NAME: API NUMBER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB~BER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION RUN1 97099 M BAILLIE JIM COPEN SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION(FT FROM MSL O) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD 1ST STRING 2ND STRING N-23A 500292172501 BP EXPLORATION SCHLU~iBERGER WELL SERVICES 12-MAY-97 RUN 2 RU2~ 3 8 llN 13E 2151 568 74.67 43.77 OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) ................................ 6.000 7.000 10037.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 3RD STRING PRODUCTION STRING RE~L~RKS: CONTAINED HEREIN IS THE LDWG FORMATTED DATA ACQUIRED ON BP EXPLO~TION'S N-23A WELL. DATA ACQUIRED ON THIS WELL ARE PLATFORM EXPRESS DENSITY AND NEUTRON, MICROLOG, ARRAY INDUCTION RESISTIVITIES, AND BOREHOLE COMPENSATED SONIC. THIS DATA IS CONSIDERED TO BE THE PRIMARY DEPTH CONTROL. NO REPEAT PASS DATA IS AVAILABLE FOR THIS WELL. $ $ PAGE: **** FILE HEADER **** FILE NAME : EDIT .001 SERVICE : FLIC VERSION : O01CO1 DATE : 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NTJMBER: 1 EDITED OPEN HOLEMAIN PASS Ail tool strings; Depth shifted and clipped curves; all runs merged; no cased hole data. DEPTH INCREMENT: 0.5000 FILE S~Y LDWG TOOL CODE AIT SDN CNT BCS $ BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) START DEPTH STOP DEPTH 11708.0 10364.0 11696.0 10277.0 11681 . 0 10277.0 11664 . 0 10207.0 BASELINE DEPTH $ MERGED DATA SOURCE LDWG TOOL CODE $ REMARKS: .......... EQUIVALENT UNSHIFTED DEPTH .......... AIT SDN CNT BCS ............................ RUN NO. PASS NO. MERGE TOP MERGE BASE THIS FILE CONTAINS THE CLIPPED OPEN HOLE DATA. THIS DATA IS THE PRIMARY DEPTH CONTROL DATA FOR THIS WELL SO NO DEPTH SHIFTING WAS DONE. $ LIS Tape Verification~ ~isting Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 112 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 9 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 0 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 630304 O0 000 O0 0 1 1 1 4 68 0000000000 GR AIT GAPI 630304 O0 000 O0 0 1 1 1 4 68 0000000000 TENS AIT LB 630304 O0 000 O0 0 1 1 1 4 68 0000000000 MRES AIT OHMM 630304 O0 000 O0 0 1 1 1 4 68 0000000000 MTEMAIT DEGF 630304 O0 000 O0 0 1 1 1 4 68 0000000000 DEV SDN DEG 630304 O0 000 O0 0 1 1 1 4 68 0000000000 AFIO AIT OHFff4630304 O0 000 O0 0 1 1 1 4 68 0000000000 AF20 AIT Otk4M 630304 O0 000 O0 0 1 1 1 4 68 0000000000 AF30 AIT OH~4M 630304 O0 000 O0 0 1 1 1 4 68 0000000000 AF60 AIT OHP~I 630304 O0 000 O0 0 1 1 1 4 68 0000000000 AF90 AIT OH~M 630304 O0 000 O0 0 1 1 1 4 68 0000000000 CALl AIT IN 630304 O0 000 O0 0 1 1 1 4 68 0000000000 DT BCS US/F 630304 O0 000 O0 0 1 1 1 4 68 0000000000 NPHI CNT PU-S 630304 O0 000 O0 0 1 1 1 4 68 0000000000 CPHI CNT PU-S 630304 O0 000 O0 0 1 1 1 4 68 0000000000 CNTC CNT CPS 630304 O0 000 O0 0 1 1 1 4 68 0000000000 CFTC CNT CPS 630304 O0 000 O0 0 1 1 1 4 68 0000000000 FCNT CNT CPS 630304 O0 000 O0 0 1 1 1 4 68 0000000000 NCNT CNT CPS 630304 O0 000 O0 0 1 1 1 4 68 0000000000 CRAT CNT 630304 O0 000 O0 0 1 1 1 4 68 0000000000 LIS Tape Verification ~isting Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 4 NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) NRAT CNT 630304 O0 000 O0 0 1 1 1 4 68 0000000000 CALl SDN IN 630304 O0 000 O0 0 1 1 1 4 68 0000000000 DRHO SDN G/C3 630304 O0 000 O0 0 1 1 1 4 68 0000000000 PEF SDN BN/E 630304 O0 000 O0 0 1 1 1 4 68 0000000000 RHOB SDN G/C3 630304 O0 000 O0 0 1 1 1 4 68 0000000000 MINVSDN OH~4M 630304 O0 000 O0 0 1 1 1 4 68 0000000000 i4NOR SDN OH~E4 630304 O0 000 O0 0 1 1 1 4 68 0000000000 MSFL SDN OH~iM 630304 O0 000 O0 0 1 1 1 4 68 0000000000 ** DATA ** DEPT. 11712.000 GR.AIT -999.250 TENS.AIT 1772.000 M~ES.AIT 0.080 MTEM. AIT 176.015 DEV. SDN -999.250 AFiO.AIT -999.250 AF20.AIT -999.250 AF30.AIT -999.250 AF60.AIT -999.250 AF90.AIT -999.250 CAL1.AIT -999.250 DT.BCS -999.250 NPHI.CNT -999.250 CPHI.CNT -999.250 CNTC. CNT -999.250 CFTC. CNT -999.250 FCNT. CNT -999.250 NCNT. CNT -999.250 CRAT. CNT -999.250 NRAT. CNT -999.250 CAL1.SDN -999.250 DRHO.SDN -999.250 PEF. SDN -999.250 RHOB.SDN -999.250 MINV. SDN ~999.250 f~NOR.SDN -999.250 MSFL.SDN -999.250 DEPT. 10207.000 GR.AIT -999.250 TENS.AIT 1479.000 ~i~ES.AIT 0.105 MTEM. AIT -999.250 DEV. SDN 86.111 AFiO.AIT -999.250 AF20.AIT -999.250 AF30.AIT -999.250 AF60.AIT -999.250 AF90.AIT -999.250 CAL1.AIT -999.250 DT.BCS 79.900 NPHI.CNT -999.250 CPHI.CNT -999.250 CNTC. CNT -999.250 CFTC. CNT -999.250 FCNT. CNT -999.250 NCNT. CNT -999.250 CRAT. CNT -999.250 NRAT. CNT -999.250 CAL1.SDN -999.250 DRHO.SDN -999.250 PEF. SDN -999.250 RHOB.SDN -999.250 MINV. SDN -999.250 lciNOR.SDN -999.250 MSFL.SDN -999.250 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .001 SERVICE ' FLIC VERSION : O01CO1 DATE · 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : LIS Tape Verificatidn Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: **** FILE HEADER **** FILE NAME : EDIT .002 SERVICE : FLIC VERSION · O01CO1 DATE : 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : RUN NUMBER: TOOL STRING NUMBER: PASS NUMBER: DEPTH INCREMENT: FILE SUNk~ARY FILE HEADER FILE NUMBER 2 RAW OPEN HOLEMAIN PASS Curves and log header data for each run and tool string in separate files; Tool String #1 fo Sadlerochit run presented first (primary depth control string used to depth shift the Sadler interval) followed by files for other main pass tool strings per run. 1 1 1 0.5000 VENDOR TOOL CODE START DEPTH STOP DEPTH AIT 11708.0 10364.0 PEX 11696.0 10277.0 BHC 11664.0 10207.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME CIRCULATION ENDED: TIME LOGGER ON BOTTOM: TD DRILLER (FT) : TD LOGGER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : LOGGING SPEED (FPHR): 19-FEB-97 8C0-609 2230 18-FEB-97 2200 19-FEB-97 11849.0 11717.0 10207.0 11712.0 1800.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL ~ER BHC ARRAY SONIC SONDE SLS-WA 1427 GR GAR~ffA RAY HTBCC 814 PEX COMP. NEUTRON HGNS-H 850 PEX DENSITY MICORLOG HRCC-B 849 AIT ARRAY INDUCTION AIT-H 122 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) : 6.000 10037.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: LOGGERS CASING DEPTH (FT): 10037.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G) '. MUD VISCOSITY (S): MUD PH: FLUID LOSS (C3): MAXIMUM RECORDED TEMPERATURE (DEGF) : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT): MUD AT BOTTOM HOLE TEMPERATURE (BHT) : MUD FILTRATE AT (MT): MUD FILTRATE AT (BHT) : MUD CAKE AT (MT): MUD CAKE AT (BHT) : BRINE & L~ 8.50 28.0 7.5 187.0 O. 242 O. 242 70.0 70.0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): THERMAL MA TRIX: SANDSTONE MATRIX DENSITY: 2.65 HOLE CORRECTION (IN): 6. 000 TOOL STANDOFF (IN): O. 8 REMARKS: GETTING TO TD WITH DRILL PIPE AND TOOLS TOOK AN INORDINATE AMOUNT OF TIME (13 HRS) , DUE TO SEVERE 35 TO 40 DEG/iO0 FT. DOGLEGS. THE ORIGINAL HOLE WAS DRILLED TO 11852, BUT A HOLE MAKER WAS RUN ONLY TO 11700. THE TLC STRING MADE IT TO 11717 WHERE IT COMPRESSED AND STOPPED PROBABLY PUSHING LCM DOWNHOLE. LOG RUN ON SANDSTONE MATRIX DENSITY 2. 65 G/CC. O. 8" STANDOFFS RUN ON SONIC. TOOL LOST TELEMETRY @ 10258. THIS FILE CONTAINS ALL RAW MAIN LOG DATA SAMPLED AT 0.5'. $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 168 4 66 1 5 66 6 73 7 65 LIS Tape Verification ~isting Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: TYPE REPR CODE VALUE 8 68 O. $ 9 65 FT 11 66 6 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 * * SET TYPE - CHAN * * NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 630304 O0 000 O0 0 2 1 1 4 68 0000000000 GR AIT GAPI 630304 O0 000 O0 0 2 1 1 4 68 0000000000 HGR AIT GAPI 630304 O0 000 O0 0 2 1 1 4 68 0000000000 TENS AIT LB 630304 O0 000 O0 0 2 1 1 4 68 0000000000 MRES AIT OPff4M630304 O0 000 O0 0 2 1 1 4 68 0000000000 MTEMAIT DEGF 630304 O0 000 O0 0 2 1 1 4 68 0000000000 GDEV PEX DEG 630304 O0 000 O0 0 2 1 1 4 68 0000000000 AFiO AIT OH~M 630304 O0 000 O0 0 2 1 1 4 68 0000000000 AF20 AIT OH~ 630304 O0 000 O0 0 2 1 1 4 68 0000000000 AF30 AIT OHMM 630304 O0 000 O0 0 2 1 1 4 68 0000000000 AF60 AIT OHI¢~I630304 O0 000 O0 0 2 1 1 4 68 0000000000 AF90 AIT OH~ 630304 O0 000 O0 0 2 1 1 4 68 0000000000 AIBD AIT IN 630304 O0 000 O0 0 2 1 1 4 68 0000000000 DT BHC US/F 630304 O0 000 O0 0 2 1 1 4 68 0000000000 TT1 BHC US 630304 O0 000 O0 0 2 1 1 4 68 0000000000 TT2 BHC US 630304 O0 000 O0 0 2 1 1 4 68 0000000000 TT3 BHC US 630304 O0 000 O0 0 2 1 1 4 68 0000000000 TT4 BHC US 630304 O0 000 O0 0 2 1 1 4 68 0000000000 NPHI PEX PU 630304 O0 000 O0 0 2 1 1 4 68 0000000000 TNPH PEX PU 630304 O0 000 O0 0 2 1 1 4 68 0000000000 NPOR PEX PU 630304 O0 000 O0 0 2 1 1 4 68 0000000000 CNTC PEX CPS 630304 O0 000 O0 0 2 1 1 4 68 0000000000 CFTC PEX CPS 630304 O0 000 O0 0 2 1 1 4 68 0000000000 TNRA PEX 630304 O0 000 O0 0 2 1 1 4 68 0000000000 RTNR PEX 630304 O0 000 O0 0 2 1 1 4 68 0000000000 RCFT PEX CPS 630304 O0 000 O0 0 2 1 1 4 68 0000000000 RCNT PEX CPS 630304 O0 000 O0 0 2 1 1 4 68 0000000000 HCNT PEX CPS 630304 O0 000 O0 0 2 1 1 4 68 0000000000 HCFT PEX CPS 630304 O0 000 O0 0 2 1 1 4 68 0000000000 RHFT PEX CPS 630304 O0 000 O0 0 2 1 1 4 68 0000000000 RHNT PEX CPS 630304 O0 000 O0 0 2 1 1 4 68 0000000000 HTNP PEX PU 630304 O0 000 O0 0 2 1 1 4 68 0000000000 HNPO PEX PU 630304 O0 000 O0 0 2 1 1 4 68 0000000000 RHOZ PEX G/C3 630304 O0 000 O0 0 2 1 1 4 68 0000000000 HDRA PEX G/C3 630304 O0 000 O0 0 2 1 1 4 68 0000000000 PEFZ PEX 630304 O0 000 O0 0 2 1 1 4 68 0000000000 LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELE~ CODE (HEX) DPHZ PEX PU 630304 H~IN PEX OH~I 630304 H~NO PEX OH~ 630304 RXOZ PEX OH~q 630304 RX08 PEX OH~E4 630304 HCAL PEX IN 630304 O0 000 O0 0 2 1 1 4 68 0000000000 O0 000 O0 0 2 1 1 4 68 0000000000 O0 000 O0 0 2 1 1 4 68 0000000000 O0 000 O0 0 2 1 1 4 68 0000000000 O0 000 O0 0 2 1 1 4 68 0000000000 O0 000 O0 0 2 1 1 4 68 0000000000 * * DA TA * * DEPT. 11712.000 GR.AIT 148.645 HGR.AIT 148.645 TENS.AIT MRES.AIT 0.080 MTEM. AIT 176.015 GDEV. PEX -999.250 AFIO.AIT AF20.AIT 14.607 AF30.AIT 35.707 AF60.AIT 44.782 AF90.AIT AIBD.AIT 5.547 DT.BHC 69.400 TT1.BHC 474.400 TT2.BHC TT3.BHC 484.800 TT4.BHC 353.600 NPHI.PEX 28.224 TNPH. PEX NPOR.PEX 27.655 CNTC. PEX 4538.211 CFTC. PEX 1867.942 TNRA.PEX RTNR.PEX 2.632 RCFT. PEX 1559.950 RCNT. PEX 4165.767 HCNT. PEX HCFT. PEX 1867.942 RHFT. PEX 1559.950 RHNT. PEX 4165.767 HTNP. PEX HNPO. PEX 27.655 RHOZ.PEX -999.250 P~DRA.PEX -999.250 PEFZ.PEX DPHZ.PEX 60721.211 P~4IN. PEX 1.928 H~NO.PEX 2.546 RXOZ.PEX RXO8.PEX 5.147 HCAL.PEX 5.547 DEPT. 10200.000 GR.AIT MRES.AIT 0.107 MTEM. AIT AF20.AIT -999.250 AF30.AIT AIBD.AIT -999.250 DT.BHC TT3.BHC -999.250 TT4.BHC NPOR.PEX 21.481 CNTC.PEX RTNR.PEX 2.066 RCFT. PEX HCFT. PEX -999.250 RHFT. PEX HNPO. PEX -999.250 RHOZ.PEX DPHZ.PEX -999.250 H~IN. PEX RXO8.PEX -999.250 HCAL.PEX 26.971 148.392 -999.250 79.900 -999.250 3527 731 1534 993 -999 250 -999 250 -999 250 -999 250 HGR.AIT -999.250 TENS.AIT GDEV. PEX 86.111 AFiO.AIT AF60.AIT -999.250 AF90.AIT TT1.BHC -999.250 TT2.BHC NPHI.PEX 22.121 TNPH. PEX CFTC. PEX 1759.653 TNR~.PEX RCNT. PEX 3189.708 HCNT. PEX RPiNT. PEX -999.250 HTNP.PEX H2~RA.PEX -999.250 PEFZ.PEX H~NO.PEX -999.250 RXOZ. PEX 1772.000 9.071 36.660 328.000 27.900 2.428 4538.211 27.900 -999.250 5.157 1479.000 -999.250 -999.250 -999.250 21.270 2.049 -999.250 -999.250 -999.250 -999.250 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .002 SERVICE : FLIC VERSION · O01CO1 DATE · 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : LIS Tape Verificatio~isting Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: **** FILE HEADER **** FILE NAME : EDIT .003 SERVICE · FLIC VERSION · O01CO1 DATE · 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : RUN NUMBER: TOOL STRING NUMBER: PASS NUMBER: DEPTH INCREMENT: FILE SUMMARY FILE HEADER FILE NUMBER 3 RAW OPEN HOLE MAIN PASS Curves and log header data for each run and tool string in separate files; Tool String #1 fo Sadlerochit run presented first (primary depth control string used to depth shift the Sadler interval) followed by files for other main pass tool strings per run. 1 1 1 0.1667 VENDOR TOOL CODE START DEPTH STOP DEPTH AIT 11708.0 10364.0 PEX 11696.0 10277.0 BHC 11664.0 10207.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME CIRCULATION ENDED: TIME LOGGER ON BOTTOM: TD DRILLER (FT) : TD LOGGER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : LOGGING SPEED (FPHR): 19-FEB-97 8C0-609 2230 18-FEB-97 2200 19-FEB-97 11849.0 11717.0 10207.0 11712.0 1800.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER BHC ARRAY SONIC SONDE SLS-WA 1427 GR GANk~ARAY HTBCC 814 PEX COMP. NEUTRON HGNS-H 850 PEX DENSITY MICORLOG HRCC-B 849 AIT ARRAY INDUCTION AIT-H 122 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) DRILLERS CASING DEPTH (FT) 6.000 10037.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 10 LOGGERS CASING DEPTH (FT) 10037.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: FLUID LOSS (C3): MAXIMUM RECORDED TEMPERATURE (DEGF) : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT): MUD AT BOTTOM HOLE TEMPERATURE (BHT) : MUD FILTRATE AT (MT): MUD FILTRATE AT (BHT) : MUD CAKE AT (MT): MUD CAKE AT (BHT) : BRINE & LCM 8.50 28.0 7.5 187.0 0.242 O. 242 70.0 70.0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): THERMAL MATRIX: SANDSTONE MATRIX DENSITY: 2.65 HOLE CORRECTION (IN): 6. 000 TOOL STANDOFF (IN): O. 8 REMARKS: GETTING TO TD WITH DRILL PIPE AND TOOLS TOOK AN INORDINATE AMOUNT OF TIME (13 HRS) , DUE TO SEVERE 35 TO 40 DEG/iO0 FT. DOGLEGS. THE ORIGINAL HOLE WAS DRILLED TO 11852, BUT A HOLE MAKER WAS RUN ONLY TO 11700. THE TLC STRING MADE IT TO 11717 WHERE IT COMPRESSED AND STOPPED PROBABLY PUSHING LCM DOWNHOLE. LOG RUN ON SANDSTONE MATRIX DENSITY 2. 65 G/CC. 0.8" STANDOFFS RUN ON SONIC. TOOL LOST TELEMETRY @ 10258. THIS FILE CONTAINS ALL RAW MAIN LOG DATA SAMPLED AT O. 1667'. $ LIS FORMAT DATA ** DATA FORMAT SPECIFICATION RECORD ** * * SET TYPE - 64EB * * TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 80 4 66 ! 5 66 6 73 7 65 LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 11 TYPE REPR CODE VALUE 8 68 0.166 9 65 FT 11 66 12 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 630304 O0 000 O0 0 3 1 1 4 68 0000000000 TT1 BHC US 630304 O0 000 O0 0 3 1 1 4 68 0000000000 TT2 BHC US 630304 O0 000 O0 0 3 1 1 4 68 0000000000 TT3 BHC US 630304 O0 000 O0 0 3 1 1 4 68 0000000000 TT4 BHC US 630304 O0 000 O0 0 3 1 1 4 68 0000000000 HDRA PEX G/C3 630304 O0 000 O0 0 3 1 1 4 68 0000000000 PEFZ PEX 630304 O0 000 O0 0 3 1 1 4 68 0000000000 RHOZ PEX G/C3 630304 O0 000 O0 0 3 1 1 4 68 0000000000 DPHZ PEX PU 630304 O0 000 O0 0 3 1 1 4 68 0000000000 HMIN PEX OH~fl~630304 O0 000 O0 0 3 1 1 4 68 0000000000 HMNO PEX OH~M 630304 O0 000 O0 0 3 1 1 4 68 0000000000 RXOZ PEX OH~M 630304 O0 000 O0 0 3 1 1 4 68 0000000000 RX08 PEX OHMM 630304 O0 000 O0 0 3 1 1 4 68 0000000000 HCNT PEX CPS 630304 O0 000 O0 0 3 1 1 4 68 0000000000 HCFT PEX CPS 630304 O0 000 O0 0 3 1 1 4 68 0000000000 HGR PEX GAPI 630304 O0 000 O0 0 3 1 1 4 68 0000000000 RHFT PEX CPS 630304 O0 000 O0 0 3 1 1 4 68 0000000000 RHNT PEX CPS 630304 O0 000 O0 0 3 1 1 4 68 0000000000 HTNP PEX PU 630304 O0 000 O0 0 3 1 1 4 68 0000000000 HNPO PEX PU 630304 O0 000 O0 0 3 1 1 4 68 0000000000 ** DATA ** DEPT. 11712.000 TT1.BHC 474.400 TT2.BHC 328.000 TT3.BHC TT4.BHC 353.600 HDRA.PEX -999.250 PEFZ.PEX -999.250 RHOZ.PEX DPHZ.PEX 60721.211 HMIN. PEX 1.928 HFiNO.PEX 2.546 RXOZ.PEX RXO8.PEX 5.147 HCNT. PEX 4538.211 HCFT. PEX 1867.942 HGR.PEX RHFT. PEX 1559.950 RHNT.PF~ 4165.767 HTNP.PEX 27.900 HNPO.PEX DEPT. 10200.334 TT1.BHC 511.200 TT2.BHC 363.600 TT3.BHC TT4.BHC 342.400 HDRA.PEX 0.010 PEFZ.PEX 2.577 RHOZ.PEX DPHZ.PEX 23.493 H~IIN. PEX 0.181 HMNO.PEX 0.240 RXOZ.PEX RXO8.PEX 3.747 HCNT. PEX 3518.854 HCFT. PEX 1718.602 HGR.PEX RHFT. PEX 1648.253 RHNT. PEX 3296.250 HTNP.PEX 13.421 HNPO.PEX 484.800 -999.250 5.157 148.645 27.655 514. 400 2. 262 3. 747 25. 494 12. 783 LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 12 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .003 SERVICE · FLIC VERSION · O01CO1 DATE : 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NAME : EDIT .004 SERVICE : FLIC VERSION · O01CO1 DATE : 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : RUN NUMBER: TOOL STRING NUMBER: PASS NUMBER: DEPTH INCREMENT: FILE SURE~ARY FILE HEADER FILE NUMBER 4 RAW OPEN HOLE MAIN PASS Curves and log header data for each run and tool string in separate files; Tool String #1 fo Sadlerochit run presented first (primary depth control string used to depth shift the Sadler interval) followed by files for other main pass tool strings per run. 1 1 1 0.0833 VENDOR TOOL CODE START DEPTH STOP DEPTH AIT 11708.0 10364.0 PEX 11696.0 10277.0 BHC 11664.0 10207.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME CIRCULATION ENDED: TIME LOGGER ON BOTTOM: TD DRILLER (FT) : TD LOGGER (FT) : TOP LOG INTERVAL (FT) : 19-FEB-97 8C0-609 2230 18-FEB-97 2200 19-FEB-97 11849.0 11717.0 10207.0 LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 13 BOTTOM LOG INTERVAL (FT) : LOGGING SPEED (FPHR) : 11712.0 1800.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER BHC ARRAY SONIC SONDE SLS-WA 1427 GR GAMMA RAY HTBCC 814 PEX COMP. NEUTRON HGNS-H 850 PEX DENSITY MICORLOG HRCC-B 849 AIT ARRAY INDUCTION AIT-H 122 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) : LOGGERS CASING DEPTH (FT) : 6. 000 10037.0 10037.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: FLUID LOSS (C3): MAXIMUM RECORDED TEMPERATURE (DEGF) : RESISTIVITY (OH~ff4) AT TEMPERATURE (DEGF) : MUD AT MEASURED TEMPERATURE (MT) '. MUD AT BOTTOM HOLE TEMPERATURE (BHT) : MUD FILTRATE AT (MT): MUD FILTRATE AT (BHT) : MUD CAKE AT (MT): MUD CAKE AT (BHT): BRINE & L~ 8.50 28.0 7.5 187.0 O. 242 70.0 O. 242 70.0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL) : THERMAL MATRIX: SANDSTONE MATRIX DENSITY: 2.65 HOLE CORRECTION (IN) : 6. 000 TOOL STANDOFF (IN): O. 8 REMARKS: GETTING TO TD WITH DRILL PIPE AND TOOLS TOOK AN INORDINATE AMOUNT OF TIME (13 HRS) , DUE TO SEVERE 35 TO 40 DEG/iO0 FT. DOGLEGS. THE ORIGINAL HOLE WAS DRILLED TO 11852, BUT A HOLE MAKER WAS RUN ONLY TO 11700. THE TLC STRING MADE IT TO 11717 WHERE IT COMPRESSED AND STOPPED PROBABLY PUSHING LCM DOWNHOLE. LOG RUN ON SANDSTONE MATRIX DENSITY 2.65 G/CC. 0.8" STANDOFFS RUN ON SONIC. TOOL LOST TELEMETRY @ 10258. THIS FILE CONTAINS ALL RAW MAIN LOG DATA SAMPLED AT O. 0833 '. $ LIS FORMAT DATA LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 14 ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 8 4 66 1 5 66 6 73 7 65 8 68 0.083 9 65 FT 11 66 128 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 * * SET TYPE - CHAN * * NAME SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 630304 O0 000 O0 0 4 1 1 4 68 0000000000 HCAL PEX IN 630304 O0 000 O0 0 4 1 1 4 68 0000000000 ** DATA ** DEPT. 11712.000 HCAL.PEX 5.547 DEPT. 10200. 084 HCAL. PEX 6. 008 ** END OF DATA ** LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 15 **** FILE TRAILER **** FILE NAME : EDIT .004 SERVICE . FLIC VERSION .. O01CO1 DATE · 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NAME : EDIT .005 SERVICE : FLIC VERSION : O01CO1 DATE : 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : RUN NUMBER: TOOL STRING NUMBER: PASS NUMBER: DEPTH INCREMENT: FILE SU~VARY FILE HEADER FILE NUMBER 5 RAW OPEN HOLE MAIN PASS Curves and log header data for each run and tool string in separate files; Tool String #1 fo Sadlerochit run presented first (primary depth control string used to depth shift the Sadler interval) followed by files for other main pass tool strings per run. 1 1 1 0.2500 VENDOR TOOL CODE START DEPTH STOP DEPTH AIT 11708.0 10364.0 PEX 11696.0 10277.0 BHC 11664.0 10207.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME CIRCULATION ENDED: TIME LOGGER ON BOTTOM: TD DRILLER (FT) : TD LOGGER (FT) : TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : LOGGING SPEED (FPHR): TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE 19-FEB-97 8C0-609 2230 18-FEB-97 2200 19-FEB-97 11849.0 11717.0 10207.0 11712.0 1800.0 TOOL NUMBER LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 16 BHC ARRAY SONIC SONDE SLS-WA 1427 GR GANfl~ARAY HTBCC 814 PEX COMP. NEUTRON HGNS-H 850 PEX DENSITY MICORLOG HRCC-B 849 AIT ARRAY INDUCTION AIT-H 122 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLERS CASING DEPTH (FT) : LOGGERS CASING DEPTH (FT): 6. 000 10037.0 10037.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: FLUID LOSS (C3): MAXIMUM RECORDED TEMPERATURE (DEGF) RESISTIVITY (0H~24) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) MUD AT BOTTOM HOLE TEMPERATURE (BHT) MUD FILTRATE AT (MT): MUD FILTRATE AT (BHT) : MUD CAKE AT (MT): MUD CAKE AT (BHT): BRINE & LCM 8.50 28.0 7.5 187.0 O. 242 70.0 O. 242 70.0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): THERMAL MATRIX: SANDSTONE MATRIX DENSITY: 2.65 HOLE CORRECTION (IN): 6. 000 TOOL STANDOFF (IN): O. 8 REMARKS: GETTING TO TD WITH DRILL PIPE AND TOOLS TOOK AN INORDINATE AMOUNT OF TIME (13 HRS), DUE TO SEVERE 35 TO 40 DEG/iO0 FT. DOGLEGS. THE ORIGINAL HOLE WAS DRILLED TO 11852, BUT A HOLE MAKER WAS RUN ONLY TO 11700. THE TLC STRING MADE IT TO 11717 WHERE IT COMPRESSED AND STOPPED PROBABLY PUSHING LCM DO?fl~HOLE. LOG RUN ON SANDSTONE MATRIX DENSITY 2.65 G/CC. 0.8" STANDOFFS RUN ON SONIC. TOOL LOST TELE~!ETRY @ 10258. THIS FILE CONTAINS ALL RAW MAIN LOG DATA SAMPLED AT 0.2500'. $ LIS FORMAT DATA LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 17 ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 28 4 66 1 5 66 6 73 7 65 8 68 0.25 9 65 FT 11 66 36 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAME SERV UNIT SERVICE API API API API FILE NUMB NUA~B SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT 630304 O0 000 O0 0 5 1 1 4 68 0000000000 AFiO AIT OPHV24630304 O0 000 O0 0 5 1 1 4 68 0000000000 AF20 AIT OH~M 630304 O0 000 O0 0 5 1 1 4 68 0000000000 AF30 AIT OH~M630304 O0 000 O0 0 5 1 1 4 68 0000000000 AF60 AIT OHRff4 630304 O0 000 O0 0 5 1 1 4 68 0000000000 AF90 AIT 0HI~4630304 O0 000 O0 0 5 1 1 4 68 0000000000 AIBD AIT IN 630304 O0 000 O0 0 5 1 I 4 68 0000000000 ** DATA ** DEPT. 11712.000 AFiO.AIT 9.071 AF20.AIT 14.607 AF30.AIT AF60.AIT 44.782 AF90.AIT 36.660 AIBD.AIT 5.547 DEPT. 10200.250 AFiO.AIT 7.347 AF20.AIT 4.863 AF30.AIT AF60.AIT 7.506 AF90.AIT 7.096 AIBD.AIT 6.008 35.707 6.217 ** END OF DATA ** LIS Tape Verification Listing Schlumberger Alaska Computing Center 12-MAY-1997 08:58 PAGE: 18 **** FILE TRAILER **** FILE NAME : EDIT .005 SERVICE · FLIC VERSION : O01CO1 DATE : 97/05/12 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** TAPE TRAILER **** SERVICE NAME : EDIT DATE : 97/05/12 ORIGIN : FLIC TAPE NAME : 97099 CONTINUATION # : 1 PREVIOUS TAPE : COGENT : BP EXPLORATION, N-23A, PRUDHOE BAY, API #50-029-21725-01 **** REEL TRAILER **** SERVICE NAME : EDIT DATE · 97/05/12 ORIGIN : FLIC REEL NAME : 97099 CONTINUATION # : PREVIOUS REEL : CO~4ENT · BP EXPLORATION, N-23A, PRUDHOE BAY, API #50-029-21725-01
