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Home My WebLink About201-025 • • Wallace, Chris D (DOA) From: AK, GWO SUPT Well Integrity <AKDCWellIntegrityCoordinator@bp.com> Sent: Tuesday,July 05, 2016 5:24 AM To: AK, OPS GC1 OSM;AK, OPS GC1 Field O&M TL;AK, OPS GC1 Wellpad Lead;AK, OPS GC1 Facility OTL;Cismoski, Doug A; Daniel, Ryan;AK, RES GPB West Wells Opt Engr;AK, RES GPB East Wells Opt Engr;AK, OPS Prod Controllers;Alatalo, Travis;AK, GWO SUPT Slickline;AK, GWO SUPT Special Projects;Wallace, Chris D (DOA) Cc: AK, GWO DHD Well Integrity;AK, GWO Projects Well Integrity;AK, OPS FF Well Ops Comp Rep; Stone, Christopher; Regg,James B (DOA) Subject: OPERABLE: Producer Y-20A(PTD#2010250)TIFL Passed All, Producer Y-20A(PTD#2010250) passed a TIFL on July 4th 2016 demonstrating two competent well barrier envelopes. The well is now classified as Operable. Please call with questions or concerns. Ryan Holt (Afrei rot, i c: e , GBP Alaska Well IGn' bai Weds SCANNED DEC 0 9 2016 VV Organization Office: 907.659.5102 WIC Email:AKDCWellIntegrityCoordinator@bp.com From: K, GWO SUPT Well Integrity Sent: Su :- , July 03, 2016 6:39 AM To: AK, OPS G OSM; AK, OPS GC1 Field O&M TL; AK, OPS GC1 Wellpad Lead; AK, OPS GC1 Facility OTL; Cismoski, Doug A; Daniel, Rya • AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; AK, OPS Prod Controllers; Alatalo,Travis; AK, GAN. PT Slickline; AK, GWO SUPT Special Projects; 'chris.wallace@alaska.gov' Cc: AK, GWO SUPT Well Inte• ' ; AK, GWO DHD Well Integrity; AK, GWO Projects Well Integrity; AK, OPS FF Well Ops Comp Rep; Stone, Christopher; 'R- • James B(DOA) (jim.reog@alaska.gov)' Subject: UNDER EVALUATION: Produ Y-20A (PTD #2010250) Sustained Casing Pressure Inner Annulus All, Producer Y-20A(PTD#2010250)was reported to have h inner annulus pressure 2080 psi over MOASP on June 30th 2016.Operations put the well on production and inner annu s pressure decreased to 1900 psi.The well is now reclassified as Under Evaluation and placed on a 28 day clock to aluate tubing integrity. Plan Forward 1. Downhole Diagnostics:TIFL 2. Well Integrity: Further Diagnostics as Needed Please call with questions or concerns. Ryan Holt (Alternates l cc ( lct) 1 • • Wallace, Chris D (DOA) From: AK, GWO SUPT Well Integrity <AKDCWellIntegrityCoordinator@bp.com> Sent: Sunday, July 03, 2016 6:39 AM To: AK, OPS GC1 OSM; AK, OPS GC1 Field O&M IL; AK, OPS GC1 Wellpad Lead; AK, OPS GC1 Facility OTL; Cismoski, Doug A; Daniel, Ryan; AK, RES GPB West Wells Opt Engr;AK, RES GPB East Wells Opt Engr;AK, OPS Prod Controllers; Alatalo, Travis; AK, GWO SUPT Slickline;AK, GWO SUPT Special Projects;Wallace, Chris D (DOA) Cc: AK, GWO SUPT Well Integrity; AK, GWO DHD Well Integrity; AK, GWO Projects Well Integrity; AK, OPS FF Well Ops Comp Rep; Stone, Christopher; Regg, James B (DOA) Subject: UNDER EVALUATION: Producer Y-20A (PTD#2010250) Sustained Casing Pressure Inner Annulus Attachments: Y-20A TIO 07-03-16.docx All, Producer Y-20A(PTD#2010250) was reported to have high inner annulus pressure 2080 psi over MOASP on June 30th 2016. Operations put the well on production and inner annulus pressure decreased to 1900 psi.The well is now reclassified as Under Evaluation and placed on a 28 day clock to evaluate tubing integrity. Plan Forward 1. Downhole Diagnostics:TIFL 2. Well Integrity: Further Diagnostics as Needed Please call with questions or concerns. Holt BP Alaska-Well Integrity Global Wells Organization Office: 907.659.5102 SCANNED DEC 0 92016 WIC Email:AKDCWeIlIntegrityCoordinator@bp.com 1 • • Y-20A TIO 04/01/16-07/03/16 wo,♦.A IOW - Ttp + 230 Y TOpO %W'% %I 1 Ot;T'N oovli 0,001'11 m1ftt 0fla% mint (*dim %IV% ONfTt 0f'I04 07,03It ImagA' roject Well History File Cover I( ge XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. ~0 l._,-0o~5 Well History File Identifier RESCAN DIGITAL DATA OVERSIZED (Scannable) [] Color items: ~ Diskettes, No. D Maps: o Grayscale items: [] Other, No/Type [] Other items scannable by large scanner ~ Poor Quality Originals: OVERSIZED (Non-Scannable) o Other: [] Logs of various kinds NOTES: Other Project Proofing BY: BEVERLY ROBIN VINCENT SHERYL ~WINDY Scanning Preparation 30 = BY: BEVERLY ROBIN VINCENT SHERYL~INDY Production Scanning Stage I PAGE COUNT FROM SCANNED FILE: ~ PAGE COUNT MATCHES NUMBER IN SCANNING PREPARATION: ,~"_ YES ........... Stage 2 IF NO IN STAGE 1 ~ PAGE(S) DISCREPANCIES WERE FOUND: ................ YES NO (SCANNING IS COMPLETE AT THIS POINT UNLESS SPECIAL ATTENTION IS REQUIRED ON AN INDIVIDUAL PAGE BASIS DUE TO QUALITY, GRAYSCALE OR COLOR IMAGES ) NO RESCANNEDBT: BEVERLY ROBIN VINCENT SHERYL MARIA WINDY DATE: fsf General Notes or Comments about this file: 12110/02Rev3NOTScanned.wpd • PRA_ y -z6A- , 2uluzo Regg, James B (DOA) From: AK, D &C Well Integrity Coordinator [ AKDCWeIIlntegrityCoordinator @bp.com] 9, 4 j "� z Sent: Saturday, April 20, 2013 12:03 PM ' ' To: AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Team Lead; Cismoski, Doug A; Daniel, Ryan; AK, RES GPB West Wells Opt Engr; AK, OPS GC1 OSM; AK, OPS GC1 Field O &M TL; AK, OPS GC1 Facility OTL; AK, OPS GC1 Wellpad Lead; AK, OPS Prod Controllers; AK, OPS Well Pad YP; Schwartz, Guy L (DOA); Regg, James B (DOA) Cc: AK, D &C DHD Well Integrity Engineer; Charles, Marcus A; Climer, Laurie A Subject: UNDER EVAL: Y -20A (PTD #2010250) TxIA Diagnostics All, Producer V-20A (PTD# 2010250) exceeded IA MOASP during a pad shut down. At this time the well will be brought back online Under Evaluation for further diagnostics. Plan Forward: 1. DHD: warm TIFL 2. WIE: further diagnostics as needed. Regards, SCANNED 4"`UL 0 8 201 Laurie Climer (. P ltertacue: ,luck 1)rlhtuti BP Alaska - Well Integrity Coordinator WIC Office: 907.659.5102 WIC Email: AKDCWeIIlntegrityCoordinator@ BP.com From: AK, D &C Well Integrity Coordinator Sent: Sunday, March 31, 2013 8:10 PM To: AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Te. Lead; Cismoski, Doug A; Daniel, Ryan; AK, RES GPB West Wells Opt Engr; AK, OPS GC1 OSM; AK, OPS GC1 Field 07. M TL; AK, OPS GC1 Facility OTL; AK, OPS GC1 Wellpad Lead; AK, OPS Prod Controllers; AK, OPS Well Pad YP; 'Schwa •, Guy L (DOA)'; 'Regg, James B (DOA)' Cc: AK, D &C DHD Well Integrity Engineer; Charles, Marcus A; Climer, Laurie A Subject: NOT OPERABLE: Y -20A (PTD #2010250) IA over MOASP All, Producer Y -20A (PTD# 2010250) was found to have sustaine• asing pressure on 03/31/2013 with TBG /IA /OA being 2100/2120/540 psi. The well failed a subsequent col • IFL. At this time the well has been made Not Operable until it can be brought back online for further diagnostics. A TIO plot and wellbore schematic has been included 'or reference. « File: Y -20A TIO plot 03- 31- 13.docx » « File: -20A schematic.pdf » 1 • P6c& Y -ZA Rit 79) Regg, James B (DOA ze ) From: AK, D &C Well Integrity Coordinator [ AKDCWelllntegrityCoordinator ©bp.com] 'k 411 i i Sent: Sunday, March 31, 2013 8:10 PM 3 To: AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Team Lead; Cismoski, Doug A; Daniel, Ryan; AK, RES GPB West Wells Opt Engr; AK, OPS GC1 OSM; AK, OPS GC1 Field O &M TL; AK, OPS GC1 Facility OTL; AK, OPS GC1 Wellpad Lead; AK, OPS Prod Controllers; AK, OPS Well Pad YP; Schwartz, Guy L (DOA); Regg, James B (DOA) Cc: AK, D &C DHD Well Integrity Engineer; Charles, Marcus A; Climer, Laurie A Subject: NOT OPERABLE: Y -20A (PTD #2010250) IA over MOASP Attachments: Y -20A TIO plot 03- 31- 13.docx; Y -20A schematic.pdf All, Producer Y - 20A (PTD# 2010250) was found to have sustained casing pressure on 03/31/2013 with TBG /IA /OA being 2100/2120/540 psi. The well failed a subsequent cold TIFL. At this time the well has been made Not Operable until it can be brought back online for further diagnostics. A TIO plot and wellbore schematic has been included for reference. «Y - 20A TIO plot 03 31 13.docx» «Y - 20A schematic.pdf» --- Regards, Laurie Climer SCANNED JUL I Q 2013 (Alternate: ,111( :k Di.ssbr•ou;) BP Alaska - Well Integrity Coordinator WIC Office: 907.659.5102 WIC Email: AKDCWellIntegrityCoordinator PBP.com 1 PBU Y -20A PTD # 2010250 03/31/2013 TIO Pressures Plot Well: Y -20 4,000 - • 3,000 - — —Tbg —MI- IA 2,000 - R s.-. -. -At- OA -w.a7 00A — 40-- 000A On 1.000 - 25.13 01/12)13 01/19/13 01126113 02102113 02109;13 02/16/13 02/23/13 03/02/13 03109/13 03116/13 03/23113 033{x'1 J • TREE= 4-1/16" crw WELLHEAD= cm, 'v'-20A SAFEAlloTES: WELL ANGLE> 70° f 12472' ORIGINAL WELLBORE NOT SHOWN BELOW ACTUATOR= BAKER C KBAELEV 78.25 AL1 & AL2 WHIPSTOCK 4-1/2" WLEG STABE) INTO BKR 7" ZXP TI CK SLV CHROME TEM BF. Eta/ = 51 I ,1' - KOP= 850' Max Angle = 97° @ 13797' • I LI 2197' — 4-1/2" HES X NIP, ID = 3.813" Detum Mb = 12189' Datum TV0ss= 113-3/8" CSG, 72#, L-80 NSCT, 10 =12.347" H 3095' _ST IVO WD DEV TYPE VLV LATCH PORT DATE GAS LIFT MANDRELS 6 3548 3004 47 MVGM DMY RK 0 02/26/10 7 SKR LNR TIEBACK, ID= 7? —1 11278' I I 5 4299 3519 46 IVIVCM DOME RK 16 04121/11 19-5/8" X 7" BKR MECHANICAL LTP, ID = ?? — 11287' I 4 6443 5013 49 !MGM DMY RK 0 03/17/11 3 7871 6013 43 IN'OGM DOME RK 16 04/21/11 9-5-8" X 7" BKR LNR HGR, = ?? .-1 11292' I 2 9932 7504 41 NAV/3M DOME RK 16 04121/11 1" 11903 8717 57 1(8G-2 SO `43K 28 12/20/11 FWI-iif WinoitET— 1144 —NOTE ST#1 CAN TAIE EITHER E3K TOP OR INTEG LATCH 19-5/8" CSG, 47#, L-80 BTRS, ID = 8.681" -11465 9-5/8" MILLOUTWNDOW (Y-20A) 11449' - 11465' Minimum ID 1.92" 14617' 2.70' DEPLOYMENT SLEEVE I 11969 7 7" X 4-1 /2" BKR S-3 PKR, ID = 3.875" I 11991' —14-1/2" HES X NIP, ID = 3,813" 12012' I-141/2" HES X NIP, ID = 3613' I 12033 —7" X 5" BKR ZXP LTPw / 7' T1F_BK, ID = 5250' 4-1/2" TBG, 12 6#, CR-80 NSCT, .0152 pbf, ID = 3.958" — 12024' ' 12024' — 4-1/2' VVLEG, ID = 3.958" NN 12050 r X 5" BKR FLEX LOCK LNR NOR, 10-47437" 12059 — 5" x 4-112" X0, ID = 3.958" I7" LNR, 26#, L-80 IBT-M, .0383 bpf, ID = 6.276" H 12216' 1- p '7- '7 ?":50 ps; MILLOUT WNDOW (Y-20A L2) 14603' - 14612' 14-1 rz. COLLAPSED LNR, D 322' N 12911', 12985', 13112' EanAll--:2.7(7'BTT DEROYNENT SLEEVE, ID = 1.920" PERFORATION SUMMARY REF LOG. SP-SUN WVD/GR/RESISTIVITY ROP ON 03/18/01 & BKR HUGHES LVVD ON 11/27/09 1 - 2-3/8" LIIR, 4.4# / 4.44#, L-80 STL, 16454' Note: Refer to Production DB for historical perf data .0039 bpf, ID = 1.995" SIZE SPF 1 INTERVAL Opn/Sqz 1 DATE SEE PAGE 2 FOR PERFORATION INFORMATION MILLOUT WNDOW (Y-20AL1) 15315' - 15322' -20AT 15340 — 2.7T BTT DEPLOYMENT SLEW ID = 1.920" I [FISH - VVHIPSTOCK(04/04/11 RIG) 1— 15928' _ 1 PBTD 17417' 2-3/8" LNR, 4 4# / 4.444#, L-80 STL, 16350' .0039 bpf , ID -= 1.995" 14-1/2" LNR, 12.6#, L-80 NSCT, 0152 bpf, ID = 3.958" —1 17509' • DATE REV BY COM M BITS ‘. DATE REV BY COM M BITS PRUDHOE BAY UNIT 05/31186 AUDI 2 ORIGINAL COMPLETION 05/02/11 GRC,/ PJC KB CORRECTION WELL: Y -20A / AL1/ AL2 03130101 N7ES SIDETRACK (Y-20A) 05/02/11 THY PJC FISH- WS DEPTH CORRECTION. PERMIT No 2010250, 2090810 (820) 11129109 NORDIC 2 CT D SDT RACK (Y-20A L1 & L 06/26/11 JLJ/ PJC GLV C/0 (04/21/11) AR No: 50-029-21587-01(60) (61) 04/05/11 'NORDIC 2 FISH WHIPSTOCK 01/07/12 TN PJC GLV CJO (12/20/11) SEC 33, TI1N, R13E, 1439' FNL & 347' FEL 04/30/11 TI-VPJC TBG DEPTH CORRECTIONS 05129/12 DB/JIVO 4-1/2" CR TBG CORRECTION 05/01/11 PJC GLV CORRECTIONS BP Exploration (Alaska) O _____. * PERFORATION SUMMARY Y-2 0A Fr U.LOG: $P- SUN IIWCVGR/RESISTIVITY ROP ON 03/18/01 AL1 & AL2 ANGLE AT TOP PERE N/A 1 , Note: Refer to Production DB for historical perf data SIZE ' SF I INTERVAL Opn/Sqz DATE Y -20A — 6 12538-12548 0 03/25/01 i l — 6 12558-12580 0 03/25/01 — 6 12880-12890 0 03/25/01 •• 6 13010-13020 0 03/25/01 •• 6 13160-13182 0 03/25/01 — 6 13430-13452 0 03/25/01 •II 6 13730-13752 0 03/25/01 " 6 13930-13952 0 03/25/01 • 6 14020-14042 0 03/25/01 " 6 14170-14192 0 03/25/01 — 6 14206-14230 0 03/25/01 — 6 14258-14280 0 03/25/01 - 6 14340-14362 0 03/25/01 PERFORATION SUMARY 6 14378-14400 0 03/25/01 •• 6 14540-14562 0 03/25/01 •• 6 14590-14612 0 03/25/01 REF LOG: BKR HUGHES LWD ON 11/27/09 — 6 14660-14682 0 03/25/01 -' ANGLE AT TOP PERF: NA — 6 14710-14732 0 03/25/01 Note: Refer to Production DB for historical perf data •• 6 14820-14842 0 03/25/01 SIZE SPF INTERVAL Opn/Sqz ' DATE •• 6 14875-14885 0 03125/01 Y-20A L1 — 6 14908-14930 0 03/25/01 - 2-3/8" SLTD 15342- 16318 0 11/13/09 " 6 14958-14980 0 0325/01 I Y-20A L2 •• 6 14998-15010 0 03/25/01 1 2-3/8" SLTD 14618 - 16105 0 11/25/09 6 15158-15170 0 03125/01 L 2-3/8" _ SLTD 16271 - 16334 0 11/25/09 •• 6 15190-15200 0 03/25/01 — 6 15212-15222 0 03/25/01 • 6 15234-15244 0 03/25/01 I — 6 15256-15266 0 03/25/01 " 6 15310-15332 0 03125/01 — 6 15378-15400 0 03125/01 I ■ " 6 15750-15760 0 03/25/01 " 6 15920-15942 0 03/25/01 6 15968-15990 0 03/25/01 — 6 16310-16332 0 03/25/01 — 6 16370-16392 0 03/25/01 I. • 6 16428-16450 0 03/25/01 6 16570-16582 0 03/25/01 • 6 16810-16820 0 03/25/01 •• 6 16890-16912 0 03/25/01 — 6 16945-16955 0 03/25/01 •• 6 16970-16992 0 03/25/01 " 6 17018-17040 0 03/25/01 " 6 17070-17092 0 03125/01 •• 6 17120-17142 0 03/25/01 — 6 17160-17170 0 03/25/01 " 6 17240-17252 0 03125/01 • 6 17290-17300 0 03/25/01 -20 _ ... — 6 17340-17362 0 03/25/01 : — — — — — A - - - - - - - - -. 6 • 17388-17410 0 03/25/01 "2-1/2" & 2-3/4" SCALLOPPED GUNS 110( • oi* &W DATE ' REV BY' COM MENTS DATE ' REV BY COMMENTS PRUDHOE BAY UNIT 05131186 AUDI 2 ofaciriAL COMPLETION 05/02/11 CRC/ PJC KB CORRECTPON WELL: Y-20A / AL1/AL2 03/30/01 N7ES SIDETRACK (Y-20A) , 05/02/11 THI PJC FISH- WS DEPTH CORRECTION' PERMIT No: 2010250, 2090810 (820) 11129/09 NORDIC 2 CT D SDTRACK (Y-20AL1 & L 06/26/11 JLJ/ PJC GLV CIO (04/21/11) AR No: 50-029-21587-01(60) (61) 04/05/11 NORDIC 2 FISH WHIPSTOCK 01/07/12' TA/ PJC GLV CIO (12/20/11) SEC 33. 111 N, R13E, 1439 FNL & 347' FEL 04/30/11 TH/PJC ' TBG DEPTH CORRECTIONS 05/29/12 DB/J) 4-1/2° CR TBG CORRECTION 05/01/11 _ PJC GLV CORRECTIONS BP Exploration (Alaska) ka) . . 16,ozsz Regg, James B (DOA) From: AK, D &C Well Integrity Coordinator [ AKDCWeIIIntegrityCoordinator @bp.com] 10( c Sent: Friday, October 19, 2012 4:42 PM To: AK, D &C Well Integrity Coordinator; AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Team Lead; Cismoski, Doug A; Daniel, Ryan; AK, RES GPB West Wells Opt Engr; AK, OPS GC1 OSM; AK, OPS GC1 Field O &M TL; AK, OPS GC1 Facility OTL; AK, OPS GC1 Wellpad Lead; AK, OPS Prod Controllers; AK, OPS Well Pad YP; Schwartz, Guy L (DOA); Regg, James B (DOA) Cc: AK, D &C DHD Well Integrity Engineer; Arend, Jon (NORTHERN SOLUTIONS LLC); Fowler, Craig (CH2M HILL); Charles, Marcus A Subject: OPERABLE: Y -20A (PTD #2010250) Tubing Integrity Restored All, Producer Y -20A (PTD # 2010250) passed a TIFL on 10/17/2012 after bringing the well online proving tubing integrity has been restored. The well has been reclassified as Operable. Please call if you have any questions. Thank You, Shane Wills filling in for Gerald Murphy SCANNED APR 0 9 2,513 BP Alaska - Well Integrity Coordinator WIC Office: 907.659.5102 WIC Email: AKDCWe1llntegrityCoordinator ABP.com From: AK, D &C Well Integrity Coordinator Sent: Saturday, October 13, 2012 6:22 AM To: AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Te. Lead; Cismoski, Doug A; Daniel, Ryan; AK, RES GPB West Wells Opt Engr; AK, OPS GC1 OSM; AK, OPS GC1 Field 0: M TL; AK, OPS GC1 Facility OTL; AK, OPS GC1 Wellpad Lead; AK, OPS Prod Controllers; AK, OPS Well Pad YP Cc: AK, D &C DHD Well Integrity Engineer Subject: UNDER EVALUATION: Producers Y -20A & Y -23B Sustained Casing 'ressure During TAR All, The following producers are reclassified to Under Evaluation and ould be placed online so a warm TIFL can be performed. Y -20A (PTD #2010250) Y -23B (PTD #2031640) Thank you, Mehreen Vazir 1 • vt y -20A- Prp Regg, James B (DOA) From: AK, D &C Well Integrity Coordinator [ AKDCWeIllntegrityCoordinator @bp.com] Sent: Saturday, August 11, 2012 9:46 PM X 17 �� 13 /cz To: Schwartz, Guy L (DOA); Regg, James B (DOA); AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Team Lead; Cismoski, Doug A; Daniel, Ryan; AK, RES GPB West Wells Opt Engr; AK, OPS GC1 OSM; AK, OPS GC1 Field O &M TL; AK, OPS GC1 Facility OTL; AK, OPS GC1 Wellpad Lead; AK, OPS Prod Controllers; AK, OPS Well Pad EKG; AK, OPS Well Pad YP Cc: AK, D &C DHD Well Integrity Engineer; Arend, Jon (NORTHERN SOLUTIONS LLC); Ramsay, Gavin; Brown, Don L. Subject: NOT OPERABLE: Producers with Sustained Casing Pressure During TAR All, The following producers were found to have sustained casing pressure on the IA during shutdown for turnaround activity. The immediate action is to perform a TIFL on each of the wells to evaluate for IA repressurization. If the wells fail the TIFL, a follow up email will be sent to the AOGCC for each individual well. K -05D (PTD #2110770) K -12B (PTD #2091430) P -25 (PTD #1970260)�N�� s al?) 0250) "(1 Y -23B (PTD #2031640) All the wells listed above are reclassified as Not Operable until start-up operations commence and are stable or the well passes a pressure test confirming integrity. After start-up, the wells will be reclassified as Under Evaluation with POP parameters to prevent any over - pressure incidents if integrity has not been confirmed. Please call with any questions or concerns. Thank you, Mehreen zir BP Alaska - Well Integrity Coordinator WIC Office: 907.659.5102 WIC Email: AKDCWeIIIntegrityCoordinator PBP.com Direct Cell: 832.651.5253 Direct Email: Mehreen.VazirPBP.com 1 STATE OF ALASKA ALAS AND GAS CONSERVATION COMMIS RECEIVED • REPORT OF SUNDRY WELL OPERA ti �,�� , '1 2 'lilt 1. Operations Performed: ❑ Abandon ® Repair Well ❑ Plug Perforations ❑ Stimulate ❑ r4 ?n i WIS. n mssion ❑ Alter Casing 0 Pull Tubing 0 Perforate New Pool 0 Waiver ■( Other M ..}° "t C ❑ Change Approved Program ❑ Operation Shutdown ❑ Perforate ❑ Time Extension Pull Whipstock 2. Operator Name: 4. Well Class Before Work: 5. Permit To Drill Number: BP Exploration (Alaska) Inc. ® Development ❑ Exploratory ' 201 - 025 3. Address: ❑ Service ❑ Stratigraphic 6. API Number: P.O. Box 196612, Anchorage, Alaska 99519 - 6612 - 50 - 029 - 21587 - 01 - 00 T. Property Designation: 8. Well Name and Number: ADL 028287, 028289 & 047471 • PBU Y - 20A 9. Field / Pool(s): Prudhoe Bay Field / Prudhoe Bay Oil Pool 10. Present well condition summary Total depth: measured 17514' feet Plugs (measured) None feet true vertical 9069' feet Junk (measured) 15928' Effective depth: measured 17417' feet Packer: (measured) 11969' feet true vertical 9059' feet Packer: (true vertical) 8753' feet Casing Length Size MD TVD Burst Collapse Structural Conductor 110' 20" 110' 110' Surface 3055' 13 -3/8" 3095' 2694' 4930 2670 Intermediate 11411' 9 -5/8" 11449' 8463' 6870 4760 Production Liner 938' 7" 11278' - 12216' 8361' - 8894' 7240 5410 Liner 5476' 4 -1/2" 12033' - 17509' 8788' - 9069' 8430 7500 Perforation Depth: Measured Depth: 12538' - 17410' True Vertical Depth: 9037' - 9059' Tubing (size, grade, measured and true vertical depth): 4 - 1/2 ", 12.6# 13Cr80 12024' 8783' Packers and SSSV (type, measured and true vertical depth): 7" x 4 - 1/2" Baker 'S - packer 11969' 8753' 11. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment description including volumes used and final pressure: Pull upper whipstock (from about 14,603'). Attempt to pull lower whipstock (unsuccessfully), push it down hole to about 15,928'. 12. Representative Daily Average Production or Injection Data Oil -Bbl Gas -Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 279 185 1,668 1,380 180 Subsequent to operation: 286 188 3,390 1,620 260 13. Attachments: ❑ Copies of Logs and Surveys run 14. Well Class after work: ❑ Exploratory ® Development ❑ Service ❑ Stratigraphic ® Daily Report of Well Operations ® Well Schematic Diagram 15. Well Status after work: ❑ GINJ e ® Oil ' 0 SUSP ❑ WDSPL ❑ Gas ❑ GSTOR ❑ SPLUG ❑ WAG ❑ WINJ 16. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: Contact Matt Ross, 564 -5782 N/A Printed Name Terrie Hubble Title Drilling Technologist Prepared By Name/Number Signature �� Phone 564 - 4628 Date Z'7��j Terrie Hubble, 564 -4628 Submit Original Only Form 10-404 Revised 10/2010 e a i , i Q 5. 3 •/t • • • "Y-20A, Well History (Pre Rig Work) Date Summary 03/16/11 WELL FLOWING ON ARRIVAL. RUNNING IN HOLE TO SET 4 1/2" SLIP STOP CATCHER. 03/17/11 SET 4 1/2" SLIP STOP @ 7953' SLM. PULLED RK -OGLV FROM STA V #3 @ 7842' SLM (7884' MD). PULLED LGLV'S FROM STA #4 @ 6410' SLM (6456' MD), STA #5 @ 4253' SLM (4312' MD). SET RK- DGLV'S IN STA'S #5, #4, LRS LOADED IA WITH 510 BBLS OF CRUDE. SET DGLV STA #3 . LRS PERFORMED MIT -IA 3000# (FAILED). RUNNING IN HOLE TO PULL SLIP STOP CATCHER. 03/18/11 T /I /O= 1360/150/40 MIT x IA Passed to 3000 psi, MIT x OA to 2000 psi (CTD prep). Pumped 15 bbls crude down the IA to pressure up to 3000 psi. MITx IA to 3000 Psi failed 4 times. On test # 5 the IA lost 40 psi in 1st 15 min and 40 psi in 2nd 15 min. ( Note: extended test to 45 min.) IA lost 0 psi in 3rd 15 min. IA lost a total of 40 psi in the last 30 min of 45 min test. IA Passed. Bleed IA to x Psi. Rig up to OA. 03/18/11 PULLED SLIP STOP CATCHER FROM 7953' SLM. WELL LEFT S/I ON DEPARTURE, PAD OP NOTIFIED. 03/19/11 T /I /O= 1360/150/40 ( MITX OA Passed to 2000 Psi) Continue rigging up to OA. Pulled flooring for access to OA. Pump 4.6 bbls dead crude down OA to achieve a test pressure of 2000 Psi. OA lost 100 Psi in 1st 15 Min and 0 Psi in 2nd 15 Min for a total loss of 100 Psi in 30 Min test. Bled OA to 120 Psi. RDMO. FWHP= 1360/320/120 03/21/11 T /I /O= SSV /0/0, Temp =SI. PPPOT-T (PASS), Pre CTD. PPPOT -T: External check installed. Stung into test port (3500 psi), bled to 0 psi. Functioned LDS, all moved freely (2.25 "). Pumped through void, good returns. Pressured void to 5000 psi for 30 min test, lost 100 psi in 15 min, lost 0 psi in second 15 min (PASS). Bled void to 0 psi. 03/23/11 T /I /O = SSV /10/Vac. Temp = SI. WHP's (Pre CTD). Wellhouse has been pulled and well is demobed. 03/23/11 T /I /O = 1500/0/0 Conduct PJSM. Verified barriers. Rigged up lubricator and tested to 500 psi low and 3500 psi high. (passed) Set 4" CIW H TWC @ 114" w/ 1 -1' ext. Torque all tree flanges to API specifications. (see Iog)(no movement observed) Changed out tapped companion blind with non tapped blind. Rigged lubricator back up with pulling tool. Shell tested tree to 500 psi low and 5000 psi high (passed) Pulled 4" CIW H TWC. Reinstalled tree cap and tested against swab valve to 500 psi low and 3500 psi high (passed) All charted test results in "Field charted tests ". 03/24/11 T /I /O= SSV /0/0 Temp= S /I, Load and Kill Tubing, Freeze Protect (Pre CTD) 03/25/11 Load and Kill Tubing, Freeze Protect (Pre CTD) Pumped 5 bbls of neat meth followed by 40 bbls of 80 °f diesel and 299 bbls of 120° 1% KCL with 40 bbls of 80° diesel freeze protect. Bled WHP's to 0 psi. FWHP's= Vac/0 /0. Page 1 of 1 • • Noilh America - ALASKA ; BP Page 1 of 10' Operation Summary Report Common Well Name: Y -20 1 AFE No Event Type: WORKOVER (WO) Start Date: 3/28/2011 End Date: 4/5/2011 1X4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay Site: PB Y Pad Rig Name /No.: NORDIC 2 Spud Date/Time: 2/20 /2001 12:00:OOAM I Rig Release: 4/5/2011 Rig Contractor: NORDIC CALISTA UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 @89.03ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth j Phase Description of Operations 1 (hr) (ft) 3/28/2011 100:00 - 01:00 1.00 MOB P PRE I RD HANDY BERM. I TIDY RIG AREA. MAKE FINAL PREPARATIONS FOR MOVING RIG OFF OF v -02 1 01:00 - 02:00 1 00 MOB P PRE i PJSM WITH RIG CREW ON MOVING OFF OF WELL V -02. NORDIC FIELD SUPT AND WSL WITNESSED PULLING OFF OF WELL. PAD OPERATOR DECLINED WITNESS. IMOVE RIG OFF OF V -02 AND STAGE IN PREPARATION FOR MOVING TO Y -PAD. REMOVE RIG MATS AND HERCULITE FROM 1. AROUND WELLHEAD. 1 PAI? OPERATOR SIGNS OFF ON WELL WORK 4 PERMIT. ,02:00 - 15:00 P 13.00 MOB P PRE 'HOLD PJSM WITH RIG CREW ON MOVING FROM V -PAD TO Y-PAD. AT W -PAD TURN OFF AT 0600 -HRS. ON Y-PAD AT 1500 -HRS. 1 15:00 - 17:00 2.00 ! MOB ! P PRE PJSM ON SPOTTING RIG OVER WELL. 1 SPOT RIG OVER Y -20. j ACCEPT RIG AT 1700 -HRS. 17:00 - 18 :00 1.00 MOB P PRE 7- RU HANDY BERM AROUND CELLAR. .RU CELLAR EQUIPMENT. 18:00 - 20:30 2.50 BOPSUR P PRE PJSM ON REMOVING TREE CAP AND NU BOP j I STACK. REMOVE TREE CAP. NU BOP STACK. 20:30 - 21:30 1.00 BOPSUR P PRE ' CHANGE OUT 7- 1/16" FLANGE X 7" OTIS 1 CONNECTOR FROM ANNULAR TO I LUBRICATOR. CONNECTOR BELONGS TO SCHLUMBERGER AND WAS DUE FOR ANNUAL INSPECTION. 21:30 PRE MU 7" LUBRICATOR. 23:00 1.50 BOPSUR P BRICATOR. INSTALL CHINA CAP. I � GREASE FLOW CROSS. i FILL STACK WITH COLD WATER. 23:00 - 23:45 0.75 BOPSUR ' P I PRE I RIG EVACUATION DRILL AND AAR. ENTIRE CREW MUSTERED IN SATELLITE OFFICE. DISCUSSED CREW RESPONSE (ALARM WAS HARD TO HEAR IN CELLAR) AND ACCOUNTING FOR ALL PEOPLE ON LOCATION (NO ADDITIONAL PEOPLE ON LOCATION DURING DRILL). CREW RETURNED TO OPS CAB AND HELD PRE SPUD MEETING. DISCUSSED WELL OBJECTIVES AND PLANNED OPERATIONS. ALSO DISCUSS HAZARDS ASSOCIATED WITH HIGH PRESSURE - Y PAD FLOWLINE INCIDENT, ANECDOTAL DISCUSSION OF INCIDENTS DURING PRESSURE TESTING. 23:45 - 00:00 , 0.25 BOPSUR P PRE GET RKB MEASUREMENTS. Printed 4/25/2011 10:57:23AM America -ALASKA BP Page z of i® Operation Summary Report Common Well Name: Y -20 I AFE No Event Type: WORKOVER (WO) I Start Date: 3/28/2011 End Date: 4/5/2011 X4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay ! Site: PB Y Pad Rig Name /No.: NORDIC 2 Spud Date/Time: 2/20/2001 12:00:OOAM Rig Release: 4/5/2011 Rig Contractor: NORDIC CALISTA UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 @89.03ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth I Phase Description of Operations (hr) (ft) 1 PRE T HOLD PJSM ON PERFORMING WEEKLY BOPE 3/29/2011 � 00:00 - 05:50 I 5.8.8 3 BOPSUR P I I I TEST. PERFORM WEEKLY BOPE TEST. TEST TO 250 -PSI LOW AND 3500 -PSI HIGH FOR ALL TESTS. HOLD AND CHART EACH TEST FOR 5- MINUTES. ITEST 2 -3/8" COMBIS, 2 -3/8" X 3 -1/2" VBRS AND [ANNULAR USING 2 -3/8" TEST JT. f ALL TESTS WITNESSED BY NORDIC TOOLPUSHER, AND BP WSL TEST WITNESS WAIVED BY LOU GRIMALDI. BEGIN TAKING ON 8.4 -PPG KCL TO PITS. fre 05.50 16:00 10.17 ; BOPSUR �RD TEST: EQUIPMENT:__ / ,, P PRE PJSM . Ir/ PU INJECTOR AND STAB ONTO WELL CIRCULATE OUT DIESEL FROM COIL THATS LEFT OVER FROM V -02 FP OPPS PT INNER REEL VALVE AND PACK OFFS TO 1 250 PSI LOW AND 3500 PSI HIGH ' 16:00 - 18:30 2.50 BOPSUR P i ' DECOMP 1 RIG UP TWC LUBRICATOR TO PULL TWC. PT 1 LUBRICATOR TO 250 / 3500 PSI, GOOD. TRY TO ENGAGE THREADS OF PULLING TOOL INTO TWC PROFILE, NOT ABLE TO. REMOVE LUBRICATOR FROM WELL AND ADD A SPACER ABOVE THE THREADS ON THE PULLING TOOL. r STAB BACK ON AND PT AGAIN 250 / 3500 PSI, i GOOD. I TV VC, TC, ABOUT 300 PSI UNDERNEATH. 18:30 - 20:15 1.75 BOPSUR P DECOMP FIND METAL SHAVINGS INSIDE THE PROFILE OF THE TWC WHICH PREVENTED THE PULLING TOOL FROM MAKING UP I CORRECTLY THE FIRST TIME RD AND SEND OF DSM LUBRICATOR 20:15 - 20:45 0.50 KILLW P „ DECOMP PJSM FOR WELL KILL OPS 20:45 - 22 :30 1.75 KILLW P I I DECOMP BULL HEAD KILL WELL LEAD IN 5 BBLS McOH, 200 BBLS 2% KCL, 220 . BBLS 8.6 POWER VIS OPEN UP WELL AND 242 PSI WHP / 20 PSI IA / 1 1 5 PSI OA @ 5 BPM 92 PSI WHP @ 65 BBLS IN 5 BPM 125 PSI WHP @ 90 BBLS IN 6 BPM 200 PSI WHP @ 200 BBLS IN SD PUMPS TO SWAP TO GEO VIS - WELL ON VAC 6 BPM IN AND -11 PSI WHP @ 220 BBLS OF MUD IN SD PUMPS AND WELL IS ON VAC 22 :30 - 00 :00 1 1.50 KILLW P I DECOMP PULL NIGHT CAP AFTER 10 MIN OF PUMPS DOWN CAN NOT SEE FLUID TRY TO CATCH FLUID AND ESTABLISH 120+ BPH LOSS RATE NOTIFY ODE AND FIELD SUPERINTENDENT START TO ADD MORE FLO VIS TO SYSTEM I TRY TO KEEP UP WITH LOSSES WHILE I WAITING ON MORE FLUID I I ' TOTAL LOSSES TO FORMATION 650 BBLS + 220 DISPLACED FOR TUBING VOLUME + 58 I 1 BBLS TO FILL COIL Printed 4/25/2011 10:57:23AM e orth America - ALASKA BP Page 3 of 1a ' P Operation Summary Report , Common Well Name: Y -20 AFE No Event Type: WORKOVER (WO) I Start Date: 3/28/2011 i End Date: 4/5/2011 X4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay 1 Site: PB Y Pad Rig Name /No.: NORDIC 2 Spud Date/Time: 2/20/2001 12:00:OOAM Rig Release: 4/5/2011 Rig Contractor: NORDIC CALISTA lUWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 @89.03ft (above Mean Sea Level) Date I From - To Hrs Task I Code 1 NPT I NPT Depth 1 Phase I Description of Operations (hr) (ft) 3/30/2011 00:00 - 01:00 1.00 KILLW P 1 DECOMP CONTINUE TO CIRCULATE ACROSS THE TOP TO KEEP HOLE FULL. WITH LOSSES SLOWLY IMPROVING CURENT LOSS RATE OF - 1 BPM ANOUTHER 290 BBLS ARIVED ON LOCATION 01:00 - 01:20 0.33 FISH P DECOMP PJSM FOR DEPLOYING THE BHA WHILE MAINTAINING HOLE FILL AND WELL CONTROL SCENARIOS 01:20 02:30 1.17 FISH P DECOMP 1 PU AND MU FISHING BHA WITH MODIFIED _ _ HOOK ON INTEQ TOOLS_ 02:30 - 05:15 2.75 FISH , P DECOMP RIH WITH EDC OPEN ATEMPT MAX RATE PUMP ON TIH PER WELL PLAN BUT LOSSES ARE HIGH AND NOTHING OF NOTE ON SHAKERS BRING PUMPS DOWN TO 1.5 BPM/0.82 BPM @ `1047 PSI @ 92 FPM _ , STOP AT 13,888 FT FOR INTEQ TOOL I , ' FAILURE, 1 05:15 - 06:00 ' 0.75 FISH N DFAL :13,892.97 DECOMP I STOP AND TROUBLE SHOOT rCOMMUNICATION FAILURE WITH INTEQ TOOLS 1 Qp = 1.41/33 BPM @ 860 PSI PUMP DOWN HIGH VIS PILL (3 BUCKETS OF FLO VIS TO 50 BBLS) AND TOP OFF PITS FOR TOH. 1 3.05/1.59 BPM © 1760 PSI I LAY IN PILL WHILE POH. _- 06:00 - 09:30 I 3.50 FISH N DFAL 13,89100 DECOMP CONTINUE POOH. ! STOP AT 95 FT AND PUMP 1.04 / 0.73 BPM TO ESTABLISH STATIC LOSS RATE. 1 1 LOSS RATE IS AROUND 20 BBUHR. OPEN CT RISER AT 30 FT EOP, CHECK FOR 13CR ABASION SPOTS ON THE CT. NONE FOUND. PJSM WHILE POOH. 09:30 - 10:00 0.50 FISH N DFAL j � 13,893.00 DECOMP AT SURFACE WITH BHA. TRIP SHEET SHOWS -60 BBLS. I STAND BACK CT INJECTOR AND UD COILTRAK, FISHING TOOLS. ELECTRIC WIRE IS FOUND HANGING DOWN THROUGH THE DBPV ABOUT 2 FT BELOW THE UQC. 10:00 11:00 1.00 FISH 1 N DFAL 13,893.00 DECOMP FILL WELL WITH 5 BBLS. REMOVE LQC AND TEST WIRE, GOOD. 11:00 - 11:50 0.83 FISH N 1 DFAL ', 13,893.00 DECOMP PJSM FOR PUMPING SLACK. CLOSE SWAB AND MASTER VALVE, PUMP SLACK BACKWARDS. 11:50 — -- ' DFAL 13,893.00 DECOMP L WELL W I TH 4 BBLS. 11:50 12:10 0.33 FISH N � I ] � FILL IBLS. PJSM FOR CUTTING CT. 12:10 - 14 :00 1.83 FISH N DFAL 1 13,893.00 DECOMP CUT OFF 95 FT OF CT. PUMP CABLE FORWARD INTO CIRC HOLE IN I FLOOR TO ACCESS THE END OF IT. FILL WELL CONTINUOUSLY ACROSS TOP WHILE WORKING ON CABLE. WELL IS TAKING 15 -25 BBUHR. THERE IS NOW 1.7% SLACK INSIDE THE CT. 14:00 16:30 1 2.50 FISH N ! DFAL 13,893.00 DECOMP INSTALL CT CONNECTOR, PULL TEST TO 33K IS GOOD. INSTALL BHI CABLE HEAD, PT CONNECTOR 1 AND CHECK VALVES, GOOD. M/U BHA #2. Printed 4/25/2011 10:57:23AM rth° America - ALASKA BP Page 4 of 1O Operation Summary Report Common Well Name: Y -20 AFE No Event Type: WORKOVER (WO) 1 Start Date: 3/28/2011 1 End Date: 4/5/2011 X4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay 1 Site: PB Y Pad Rig Name /No.: NORDIC 2 Spud Date/Time: 2/20/2001 12:00:OOAM Rig Release: 4/5/2011 Rig Contractor NORDIC CALISTA UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 @89.03ft (above Mean Sea Level) Date ! From - To Hrs Task 1 Code NPT 1 NPT Depth Phase Description of Operations 1 (hr) 1 I (ft) 16:30 - 19:15 2.75 FISH N DFAL 13,893.00 DECOMP 1RIH BHA #2 - WHIPSTOCK FISHING (ASSEMBLY WITH HOOK. 19:15 - 20:30 1.25 FISH P DECOMP I LOG FOR GR TIE IN FROM 14,460 FT TO 1 14,587 FT MADE - 22 ft CORRECTION i ' 4 i 20:30 - 21:20 0.83 FISH P 1 DECOMP { RIH AND ORIENTATE 180 DEG OUT WITH HOOK HIGH SIDE PORT ON LOW SIDE TO CLEAN OFF WS 1 ; UPWT =44K iSLOW PUMP. RATE @ .84 AND 1050 PSI SLOWLY RIH TO 14,610 FT AND ONLY HAD 1160#'S WOBF. 1 PUH AT 1 FPM Qp = 2.53/1.62 BPM @ 2290 PSI _ REPEAT 2 MORE TIMES WITH 15 DEG OUT TF 21:20 - 22:35 1.25 FISH P DECOMP 1 RIH TO 14610` FT` ORIENTATE HOOK TO TRAY 1 , 'FACE FOR HS TOOL FACE ENGAGEMENT AND ATTEMPT TO LATCH I 1 PU AND APPEARS WE HAVE LATCHED AND 1 PULLED WS FREE! 5.5 K OVER PULL ON 1 1 DHWOB AND PULLING 46 K UP WT STOP PULLING AND ALLOW FOR JARS TO OPEN- LOST SOME WOB BUT CAME BACK 1 1AS'WE PU PUL LING HEAVY I a ORIENTATE TO HOOK UP AND TRAY FACE TO 'LOW SIDE. ? CONTINUE TO T POH AT 6 FPM WHILE LAY IN I ', 40 BBL HIGH VIS PILL AND LOADING PITS PRIOR TO POH ' "" 23 WRAPS LEFT ON REEL WITH EOP @ 1 14,467 FT EST COIL LENGTH @ 15,157 FT ., 22:35 - 00:00 1.42 FISH P DECOMP WITH PITS FULL / PVT = 464 BBLS POOH Qp = 1.2/0.47 BPM @ 1135 PSI 1 9700 FT / 1034 BBLS LOST FOR THE DAY / 1684 TOTAL LOSSES TO DATE POOH FROM 9700 FT - CONTINUE TO 00 2.33 FISH P DECOMP C 3/31/2011 00.00 02:20 33 PJSM FOR LD OF FISHING BHA 02:20 - 03:00 0.67 FISH P DECOMP STOP 60 FT FROM TAG UP 1 I UNSTAB LUBRICATOR AND STRIP OUT, I UNSTAB AND STAND BACK LUBRICATOR SHORT CHAIN BHA OUT OF HOLE - FISH ON! I 1 LD WHIPSTOCK RETRIEVAL HOOK IS DAMAGED, WITH THE I BALL MISSING FROM THE HOOK. LD BHA FISH N DFAL 03:00 - 06:00 3.00 DECOMP CIRCULATE ACROSS THE TOP TO KEEP HOLE FULL WITH NIGHT CAP INSTALLED SEND IN HOOK TO BTT SHOP FOR REPAIRS WAIT ON TOOLS PVT = 370 BBLS WITH 2 1 1 TRUCKS ON LOCATION 06:00 - 08:30 2.50 1 FISH N DFAL DECOMP CONTINUE WAITING ON FISHING TOOL TO BE RE- DRESSED. 08:30 - 10 :30 I 2.00 FISH N DFAL DECOMP I AFTER MORNING CALL, DECISION IS MADE TO USE AN UNSHROUDED, MODIFIED HOOK I I FOR THE WHIPSTOCK RETRIEVAL. SLB MEM LOG TECHNICIAN ARRIVES TO REMOVE PIP TAGS FROM THE WHISTOCK THAT WAS RECOVERED LAST NIGHT. Printed 4/25/2011 10:57:23AM rth America - ALASKA - BP 'Page S of 10 Operation Summary Report Common Well Name: Y -20 i AFE No Event Type: WORKOVER (WO) I Start Date: 3/28/2011 I End Date: 4/5/2011 1 X4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay Site: PB Y Pad Rig Name /No.: NORDIC 2 Spud Date/Time: 2/20/2001 12:00:OOAM I Rig Release: 4/5/2011 Rig Contractor NORDIC CALISTA ! UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 ©89.03ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth I Phase I Description of Operations (hr) (ft) 10:30 - 13:00 2.50 FISH C DECOMP ' SLB TECH IS UNABLE TO REMOVE THE PLUG SEALING THE PIP TAG STORAGE HOLE. CHECK THE WHIPSTOCK FOR NORM (NONE FOUND, ASIDE FROM THE PIP TAG AREA) , THEN OFFLOAD WHIPSTOCK TO SLB SHOP TO REMOVE THE PLUG THERE. DECISION IS MADE TO MAKE A CLEANOUT RUN NEXT. WAIT FOR NOZZLE AND STINGER TO ARRIVE i I FROM BTT. `ODE CREATES FORWARD PLAN AND IT IS APPROVED. 13:00 - 13:20 0.33 FISH C ° DECOMP !PJSM FOR P/U BHA. 13:20 - 16:00 2.67 FISH C DECOMP 1 P/U BHA #3 - 1.98" NOZZLE, STINGER, 10 JTS I PH6, 3'' COILTRAK. _ ` BHA OAL = 380.58 FT. 1 16:00 - 19:20 3.33 FISH C � DECOMP RIH BHA #3. 19:20 20:10 0.83 — - FISH C DECOMP I LOG FOR GR TIE IN WITH -23 FT I CORRECTION AT 14,775 FT CONTINUE TO RIH AT 6 FPM WHILE LOADING 1 PITS ':PVT -460 BBLS - 3.50 FISH C DECOMP ;UP WT = 48.5 K @ 8 FPM @ 15,000 FT IPUMP 4 BPM © 3490 PSI I TAG UP AT 15,285 FT AND MAKE 8 SLOW I PASSES ACROSS WHIPSTOCK MAKE ONE MORE SLOW PASS FROM TAG TO ■ 15,000 FT I DO FLOW TEST WELL IS STILL ON A VAC. - TOOK 1 BBL TO CATCH RETURNS AFTER BEING DOWN ON PUMPS FOR 10 MIN PUMP OUT 30 BBL HIGH VIS SWEEP AND CHASE OUT 123:40 - 00:00 I 0.33 FISH C DECOMP POH PVT ON BOTTOM = 289 BBLS 1 PUMP 4 BPM UNTILL PILL OUT OF HOLE I PVT @ 00:00 270 BBLS / DAILY LOSSES 538 , BBLS / TOTAL LOSSES 2,222 BBLS 4/1/2011 00 00 - 02:50 2.83 FISH C 1 DECOMP PVT 270 BBLS - 2 FULL TRUCKS ON LOCATION I CONTINUE TO POH FROM 14,500 FT I REDUCED PUMP RATE TO .78/.3 BPM @ 730 ' PSI ONCE HIGH VIS SWEEP WAS OUT OF HOLE PJSM FOR LD OF NOZZLE BHA #3 02:50 - 04 :00 1.17 FISH C DECOMP UNSTAB INJECTOR AND STAND BACK ON LEGS PULL BHA #3 WITH ELEVATORS, LD INTEQ, AND STAND BACK 10 JOINTS OF PH 6 MU INTEQ TOOLS AND TEST SAME 04 :00 - 05 :15 1.25 FISH P I DECOMP PJSM FOR MU / PU OF TOOLS PU AND MU BHA #4 WITH MODIFIED HOOK STAB ON INJECTOR AND CATCH RETURNS 05:15 - 08:30 3.25 FISH P DECOMP RIH WITH BHA #4 I PVT =139 BBLS WITH 2 FULL LOADS ON LOCATION Q _ 1.16/1.0 BPM @ 75 FPM 08:30 - 08:45 0.25 I FISH P DECOMP CORRECT -19.5 FT. T OPEN EDC, PUMP 1.02 / 0.75 BPM @ 1090 PSI. 08:45 - 09:00 0.25 FISH P DECOMP I SEVERAL WT CHECKS FROM 15200 FT TO GET A BASELINE FOR DWOB Printed 4/25/2011 10:57:23AM r t America - ALASKA BP ; t: at Operation Summary Report Common Well Name: Y -20 AFE No Event Type: WORKOVER (WO) Start Date: 3/28/2011 i End Date: 4/5/2011 ' O0TKY -E (1,130,583.00 ) Project: Prudhoe Bay Site: PB Y Pad Rig Name /No.: NORDIC 2 Spud Date/Time: 2/20/2001 12:00:OOAM Rig Release: 4/5/2011 Rig Contractor: NORDIC CALISTA I UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 @89.03ft (above Mean Sea Level) Date I From - To I Hrs Task I Code I NPT NPT Depth I Phase 1 Description of Operations ft ■ (hr) 1 -- (ft) 09 :00 - 09:20 ; 0.33 I FISH I P I DECOMP I MAKE FIRST ATTEMPT AT OL TF. I I TAG AT 15284 FT, SET 1K DOWN. PICK UP 10 FT /MIN, WATCH UPHOLE WT AND DWOB FOR I ANY VARIANCE FROM BASELINE j 1 NO INDICATION OF HOOKING WHIPSTOCK. SECOND ATTEMPT IS AT 180L, TAG AT 15284 FT AND ST 1.4K DWOB. 1 i UP WT IS 10K OVER, STOP AND LET JARS FIRE. JARS GO OFF WITH -9K DWOB, WHIPSTOCK S � 1 IS FREE. 09:20 - 09:40 0.33 FISH P DECOMP START PICKING UP 10 FT /MIN, DRAGGING HEAVY ON DWOB AND SURFACE WT. , I START ROLLING. HOOK TO HS TO PUT THE I ! WHIPSTOCK FACE LOW SIDE. 1 AT 15192 FT BHA HANGS UP, -10K ON DWOB. 1THIS IS THE EDC LIMIT WITH IT OPEN. STOP AND SLACK OFF IN 1 FT INCREMENTS TO HOLD THE HOOK IN TENSION. NEED TO 1 I I GET BACK CLOSER TO NEUTRAL WT SO THE EDC CAN BE CLOSED. AT -3 ' 5K CLOSE THE EDC. 09:40 - 16:00 6.33 FISH P DECOMP 1 WITH EDC CLOSED, TENSION LIMIT OF THE 1 BHA IS DOUBLED. I PICK UP TO 10K OVER AGAIN AND POP FREE. CONTINUE PICKING UP, INCREASE SPEED TO 20 FT /MIN TO REDUCE DRAG. 1PERIODIC 5 -10K OVERPULLS THROUGH 1PERFORA O i 1 TI NS. I AT 11900 FT INCREASE POOH SPEED TO 50 I AFT /MIN. 1 , CONTINUE POOH. DWOB CONSTANT 2 -3K TENSION 16:00 17:00 1.00 FISH P DECOMP I OPEN RISER AND POOH FINAL 50 FT. LAY DOWN COILTRAK AND 10 JTS PI-16. WHIPSTOCK IS NOT RECOVERED. - 0.25 FISH P DECOMP PJSM FOR P/U BHA #5. 17:00 17:15 I ' ' 17:15 18:20 1.08 1 1 FISH P DECOMP I, P/U BHA #5 - WHIPSTOCK RETRIEVAL HOOK WITH BALL, SAME AS BHA #1. JARS, 3" COILTRAK. 18:20 - 21:00 'I 2.67 FISH P DECOMP RIH WITH BHA #5 PVT = 210 BBLS I IEDC CLOSED 11,500 FT WT CHECK 43 K UP AND 23 K RIH 1 1 I RUN TO 12,000 FT MAKE A -20 FT ASSUMED CORRECTION TO 11,980 FT (NO LOGS FOR TIE IN THIS HIGH) CONTINUE TO RIH AT 7 FPM 0= 0.6/0.32 BPM HS TOOL FACE OR HOOK UP TO 12,028 FT GOT 4 K DHWOB FAST AND IT ROLLED TOOL FACE TO THE RIGHT. Printed 4/25/2011 10:57:23AM rth America - ALASKA :BP Page 7 of 10 Operation Summary Report Common Well Name: Y -20 I AFE No Event Type: WORKOVER (WO) Start Date: 3/28/2011 1 End Date: 4/5/2011 IX4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay Site: PB Y Pad Rig Name /No.: NORDIC 2 Spud Date/Time: 2/20 /2001 12:00:OOAM Rig Release: 4/5/2011 Rig Contractor: NORDIC CALISTA I UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 @89.03ft (above Mean Sea Level) Date I From - To Hrs Task Code NPT I NPT Depth I Phase Description of Operations (hr) (ft) 1 21:00 - 00:00 3.00 FISH P DECOMP ; -PU SLOW TO 12,000 NOTHING ON 1 -RIH SLOW HS HOOK 12,028.7 FT 1.8 K I -PU SLOW WOB FALLS OFF TO -0.15 # THEN COMES UP TO -0.2 # 11,967 NOT SEEING ANY REEL OVER PULLS OR CT WT I -RIH HS TO 12,028.9 WITH 2.40 # ROTATE HOOK TO LS / PU & NOTHING -RIH LS TAG UP AT 12,028 W 1.4#'S PU , -RIH 270 TF PU -CONTINUE TO REPEAT ON EVERY 10 OF TOOL FACE AND THEN SOME! PVT AT MIDNIGHT IS 445 BBLS / DAILY LOSSES A RE 103 BBLS / TOTAL OF 2325 BBLS 00:00 00:15 0.5 T FISH 4/2/2011 - 2 P DECOMP I PVT =445 BBLS CONTINUE WITH 5 MORE TRY'S FOR WS, WE HAVE NOW CYCLED PIPE 50 TIMES IN THE SAME SPOT. WE NEED TO POH PER SLB ! PRACTICE. 00:15 - 02:45 % 2.50 FISH P 4 DECOMP PVT ON BOTTOM = 443 BBLS POH 1 IPJSM FOR BHA HANDLING WHILE POOH 'TAG UP AND FLOW CHECK WELL - NO FLOW i PVT = 365 BBLS 02:45 03:50 1.08 FISH P DECOMP .. UNSTAB INJECTOR AND STAND BACK I SHORT CHAIN OUT BHA #5 AND LD HOOK I WITH BALL 1 PU SHROUDED HOOK, NO SWIVEL, AND 2 JOINTS OF PH6 TO MOVE LOCATION OF CYCLYLED PIPE WITHOUT HAVING TO CUT ', 1 1 PIPE AND RE -HEAD. PU INJECTOR AND STAB ON, ESTABLISH RETURNS, AND TEST TOOLS TOO S L WONT TEST 03:50 - 04:55 1.08 FISH N DECOMP FLOW CHECK WELL FOR 10 MIN I UNSTAB INJECTOR AND TROUBLE SHOOT I FLOW SUB CHANGE OUT FLOW SUB AND TRY AGAIN I ESTABLISSH CIRCULATION & TEST TOOLS PVT = 349 04:55 07:30 2.58 FISH P ' DECOMP RIH WITH BHA #6 EDC OPEN 07:30 08:40 1.17 FISH P DECOMP CORRECT -20 FT. UP WT AT 12000 FT IS 45K WITH -0.14K DWOB, 10 FT /MIN. I TAG AT 12028 FT, OL TF, DWOB = 1.86K. PICKUP IS 45K, OK DWOB NO LUCK. TAG 12028.2 AT 180L TF, DWOB = 3.8K UP WT I IS 45K, OK DWOB. TAG 12028.2 FT AT 180L TF, DWOB = 2.0K. ROLL TF TO OL. UP WT IS 45K, OK DWOB. TAG 12028 FT AT 90L TF, DWOB = 2.0K. PICK UP WT IS 53K, STOP PICK UP AND ALLOW JARS TO FIRE. JARS FIRE AND WT FALLS OFF TO 45K, OK DWOB. PICKUP 10 FT /MIN. RIH 90L TF, TAG AT 12015 FT WITH 2K DWOB, UP WT IS 45K WITH OK DWOB. RIH 90L TF, TAG AT 11996 FT WITH 3.3K DWOB, UP WT IS 43K. PICK UP AND TAG AT 11996 FT, 90L TF POOH TO CHECK HOOK. Printed 4/25/2011 10:57:23AM rth Arnenca ALASKA BP Page 8 of 101 Operation Surnrnary Report Common Well Name: Y -20 AFE No Event Type: WORKOVER (WO) Start Date: 3/28/2011 j End Date: 4/5/2011 X4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay Site: PB Y Pad 1 Rig Name /No.: NORDIC 2 I Spud Date/Time: 2/20/2001 12:00:OOAM Rig Release: 4/5/2011 Rig Contractor: NORDIC CALISTA I UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 @89.03ft (above Mean Sea Level) Date 1 From - To 1 Hrs Task Code I NPT 1 NPT Depth Phase Description of Operations (hr) I (ft) 08:40 - 12:00 3.33 FISH P 1 DECOMP ! POOH. 12:00 - 13:00 1 1.00 FISH P 1 DECOMP I AT SURFACE, OPEN RISER AND UD COILTRAK AND FISHING TOOLS. _ ' WHIPSTOCK IS NOT RECOVERED. 13:00 - 13:15 I 0.25 FISH P ■ DECOMP AAR FOR UD FISHING TOOLS AND PJSM FOR ;TRIMMING CT. 113:15 - 15:00 1.75 FISH P I DECOMP REMOVE B1-11 CABLE HEAD. RIG UP HYDRAULIC CUTTER AND CUT 130 FT OF CT OFF. INSTALL CT CONNECTOR, PULL TEST TO 30K � IS GOOD.' 15:00 - 17:30 2.50 FISH P DECOMP I INSTALL BHI CABLE HEAD. 1 PT CONNECTOR TO 250 / 3500 PSI, GOOD. • PT CHECK VALVES TO 250 / 2500 PSI, GOOD. 17:30 - 19:45 2.25 FISH P 1 DECOMP RIH BHA #7; SKIRTED GS SPEAR OVERSHOT, JARS, 3" COILTRAK UPWT@.11,900FT= 45K @10FPM I I MAKE A 20 F CORRECTION 19:45 - 20:30 0.75 FISH P DECOMP I -RIH DRY AND NO INDICATION OF TAG ON WHIPSTOCK I [-STOP AT 12,040 FT AND STOP STILL NO WOB - -PU CLEAN NO MEASURE OF OVER PULL UNTIL X NIPPLE AT 12,004 FT THEN HAD II ABOUT 2 K OVER PULL BUT NOTHING ON DH WOB. i - RIH TRYING TO SET DOWN ON SOMETHING { I TO 12,185 FT -STILL NOTHING 20:30 - 00:00 3.50 FISH P DECOMP POH FOR BHA SWAP PVT ON BOTTOM = 242 BBLS PJSM FOR LD OF BHA #7 1 PVT AT TAG UP = 147 BBLS DAILY MUD LOSSES = 231 BBLS /TOTAL OF I I LOSSES = 2556 BBLS ON 4/3/2011 00:00 - 01:00 1.00 FISH P DECOMP LD FISHING BHA #7 AND RECONFIGURE I INTEQ PJSM - MU BHA START TO MU BHA #8 AND FOUND OIL JARS T _ TO BE UNUSABLE 01:00 FISH 02:30 1.50 N WAIT DECOMP WAIT ON NEW JARS FROM BAKER. 02:30 03:00 0.50 FISH P DECOMP BTT BACK WITH NEW JAR MU BHA AND STAB ON INJECTOR TEST TOOLS PVT = 424 BBLS 03:00 - 05:15 2.25 FISH P 1 DECOMP RIH WITH BHA #8 I I EDC OPEN AND Q =27/.5 BPM @ 680 PSI , 1 I RIH TO 12,000 FT AND UP WT = 46 K @ 8 FPM .26 BPM THROUGH EDC RIH TO 12,000 FT MAKE -20 FT CORRECTION TO 11,980 FT 05:15 - 06:00 0.75 FISH P DECOMP CONTINUE IN HOLE SLOW PAST NIPPLES @ 12,004 AND 12,024 FT I RIH @ 78 FPM 22K RIH WT TILL 12,750 I RIH @ 30 FPM @ 22 K , TAG UP AT 12,906 FT AND STACK OUT TO 12,909 FT. - COLLAPSED TUBING AREA PU AND RE STACK AT 90 DEG INTERVALS 0 / 90 /180/270 SET DOWN AND TRY TO ROTATE. Printed 4/25/2011 10:57:23AM America - ALASKA - BP Page 9'of 10 Operation Summary; Report ,, Common Well Name: Y -20 AFE No Event Type: WORKOVER (WO) I Start Date: 3/28/2011 End Date: 4/5/2011 X4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay Site: PB Y Pad I Rig Name /No.: NORDIC 2 1 Spud Date/Time: 2/20/2001 12:00:OOAM I Rig Release: 4/5/2011 Rig Contractor: NORDIC CALISTA , UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 ©89.03ft (above Mean Sea Level) Date 1 From - To Hrs 1 Task Code NPT NPT Depth I Phase I Description of Operations (hr) L (ft) L I 06:00 10:00 4.00 I FISH P I DECOMP POOH. 10:00 - 10:30 j 0.50 FISH P DECOMP T I OPEN CT RISER, PICK UP CT FINAL 100 FT. 10:30 - 11:00 0.50 1 FISH P - -- DECOMP ' UD FISHING TOOLS, WHIPSTOCK NOT RECOVERED. 11:00 - 12:30 1.50 FISH P I DECOMP REMOVE BHI UQC. PUMP SLACK OUT AND CUT OFF 175 FT OF CABLE, LEAVES 73 FT OF EXCESS CABLE, 'ACCORDING TO SLB RECORDS. 'INSTALL BTT CONNECTOR AND PULL TEST I I TO 30K, GOOD.. f PRESSURE TEST CT CONNECTOR TO 3500 PSI, GOOD. -- 12:30 - 15 :00 2.50 FISH P DECOMP I INSTALL NOZZLE AND XO TO CATCH BALL. GET ON WELL AND LAUNCH 5/8" BALL WITH 1200 PSI, CHASE IT AT 2.7 BPM. BALL HITS AFTER 45 BBLS AWAY, REEL f � VOLUME IS58BBLS. 15:00 - 15:15 0.25 1 FISH P 1 DECOMP I PJSM FOR P/U BHA #9. 15:15 - 21:10 5.92 FISH P DECOMP � P/U B #9. 3" SKIRTED GS SPEAR, 5K RUPTURE DISK SUB, 1/2" DISCONNECT, JARS, 80 JTS 1.25" CSH, 5/8" DISCONNECT, DBPV, 4 JTS 2 -3/8" PH6, SWIVEL. CIRCULATE THROUGH CSH AFTER 24 JTS RUN. I BHA OAL - 2653.42 FT. 1 21:10 - 00:00 2.83 FISH P DECOMP I STAB ON AND ESTABLISH CIRCULATION I RIH 0.35/0.64 BPM @ 79 FPM PVT= 287 BBLS RIH TO 12,50 FT MAKE A -20 FT CORRECTION I T O 12,030 FT ' I I 4 K 8F PM AND .33 FT P WT 5 AT 12900 U BPM I CONTINUE IN HOLE AT 40 FPM MIDNIGHT DEPTH IS 13,700 FT WITH PVT = 314 BBLS DAILY LOSSES = 186 BBLS / TOTAL LOSSES = 2742 BBLS 4/4/2011 I 00:00 00:50 1 0.83 FISH P I DECOMP CONTINUE TO RIH SLOW AT 50 FPM PVT =314 BBLS AT 15,000 FT UP WT = 47 K @ 10 FPM & 0.34 BPM CONTINUE IN HOLE AT 15,300 BRING PUMPS UP TO 1.5/1.10 BPM @ 3100 PSI AT 15,926 FT SET DOWN ABOUT 6K ON CT WT 00 :50 - 01 :15 0.42 FISH P I DECOMP -AT 15,926 FT SET DOWN ABOUT 6 K ON CT WT TURN PUMPS OF WITH WOB SIT DOWN A LITTLE MORE TO 12 K CT WT WITH PUMPS I STILL OFF. NOT MOVING ANY. PU TO 47 K AND SET BACK DOWN 2 MORE TIMES WITH EACH TIME FINDING THE SAME FIRM BOTTOM AT 15,928.9 -PU TO 55 K AND WAIT FOR JARS I -AT 57 K JARS GO OFF -PU WT IS 51 K @ 8.7 WITH NO PUMP -PU TO 15,886 FT -RIH AT 40 FPM AND STACK OUT AT 15,928 FT I -CALL AND ADVISE CTD FIELD SUPERINTENDENT OF STATUS. Printed 4/25/2011 10:57:23AM h America - ALASKA - B Pager of t Operation Summary Report Common Well Name: Y -20 AFE No Event Type: WORKOVER (WO) Start Date: 3/28/2011 I End Date: 4/5/2011 X4- 00TKY -E (1,130,583.00 ) Project: Prudhoe Bay Site: PB Y Pad Rig Name /No.: NORDIC 2 Spud Date/Time: 2/20 /2001 12:00:OOAM Rig Release: 4/5/2011 Rig Contractor: NORDIC CALISTA UWI: 500292158700 Active Datum: 28 : 20 4/28/1986 00:00 @89.03ft (above Mean Sea Level) Date 1 From - To Hrs I Task Code 1 NPT 1 NPT Depth ! Phase 1 Description of Operations (hr) (ft) 1 01:15 - 05:10 3.92 FISH P i DECOMP POH KEEPING HOLE FULL ACROSS THE TOP I WITH 200 PSI ON HAND CHOKE PVT = 311 BBLS I II i POH @ 60 FPM NO SIGN OF OVERPULLS ON TOH THROUGH RESTRICIONS AND UP THROUGH 11,900 FT i I I i I 05:10 - 05 25 + 0.25 FISH P DECOMP FLOW CHECK WELL AND PJSM FOR LD OF 1 BHA_ 05:25 - 11:30 6.08 FISH P DECOMP , STAND BACK LD BHA #9 11:30 - 13:00 1.50 RIGD P POST FILL. PITS FOR REEL BD AND BULL HEAD 1 OPPS 13:00 - 17:30 4.50 RIGD P POST BULL HEAD IN CLEAN KCL _ BULL HEAD IN 40 BBLS DIESEL TO FP WELL 17:30 - 18:10 0.67 RIGD P POST 1 PJSM AND CREW CHANGE OUT WITH N2 CREW FOR COIL BLOW DOWN O PPS 118:10 - 21:00 2.83 RIGD P POST IPT N2 LINES TO RIG AT 3500 PSI BLOW DOWN REEL WITH N2 RECOVERING 56.7 BBLS FROM REEL I 1 RD FROM BLOW DOWN OPPS 1 UNSTAB INJECTOR AND CUT OFF CTC WHSUR P POST I PJSM WITH GREASE CREW AND DSM FOR 21:00 - 21:30 0.50 ~TREE SERVICE AND LUBRICATOR RIG UP 21:30 00:00 2.50 WHSUR P POST BRING DSM LUBRICATOR TO FLOOR AND RIG ' I j 1 UP PT LUBRICATOR TO 250/3500 PSI j 1 I ATTEMPT TO SET BPV i L i PVT =0 DAILY LOSSES 260 BBLS / TOTAL LOSSES FOR WELL IS 3002 BBLS OF FLO i PRO 4/5/2011 00:00 - 01:45 1.75 WHSUR P POST I BPV TAGGED SSV WHILE RIH ON I LUBRICATOR CHANGE OUT BPV WITH NEW 1 1 I RE PT LUBRICATOR SET BPV RD LUBRICATOR AND SEND OUT 01:45 02:00 0.25 RIGD P POST PJSM FOR PULLING COIL ACROSS AND _ _ SECURING TO REEL 02:00 - 03:30 1.50 RIGD P POST PU INJECTOR INSTALL GRAPPLE PU COIL ACROSS AND SECURE TO REEL RD GRAPPLE 03:30 - 06:00 2.50 RIGD P POST PJSM - SWAP OUT REELS SWAP REELS OUT NORDIC - CHANGE OUT BOP ELEMENTS 06:00 - 17:00 11.00 RIGD P POST N/D BOP STACK. FILL TREE WITH MEOH. I INSTALL TREE CAP AND PT WITH DIESEL TO I 1 250 / 3500 PSI, GOOD. RELEASE RIG AT 17:00. ALL FURTHER REPORTS ON 02 -12C. Printed 4/25/2011 10:57:23AM TREE= 4- 1/16" CIW 1 SAFETY NO WELL ANGLE> 70° @ 12472' *** WELLHEAD= CIW Y-20A ORIGINAL BORE NOT SHOWN BELOW KB. ELEV ACTUATOR= BAKER 8 03' AL1 &AL2 ZXPTIEBA KS V 4-1/2" INTO BKR 7" CHROM 1 1 MaxAngle = 97° @ 13797' I , 1 2197' I -14 -1/2" HES X NIP, ID= 3.813" I Datum MD = 12189' Datum TVDss= 8800' GAS LIFT MANDRELS 113 -3 /8" CSG, 72 #, L -80 NSCT, ID = 12.347" H 3095' ST MO TVD DEV TYPE VLV LATCH PORT DATE 6 3548 3004 47 MMGM DMY RK 0 02/26/10 17" BKR LNR TIEBACK, ID = ?? 1-1 11278' ( DI 5 4299 3519 46 MMGM DOME RK 16 04/14/11 4 6443 5013 49 MMGM DMY RK 0 03/17/11 19-5/8" X 7" BKR MECHANICAL LTP, ID = ?? H 11287' 1 3 7871 6013 43 MMGM SO RK 20 04/14/11 19 -5 -8" X 7" BKR LNR HGR, ID = ?? I-1 11292' 1-- 2 9932 7504 41 MMGM DMY RK 0 09/26/09 1** 11903 8717 57 KBG -2 DMY **BK 0 09/26/09 WHIPSTOCK (03/03/01) ,� 11449' *"NOTE ST #1 CAN TAKE ETHER BK TOP OR INTEG LATCH 19 -5/8" CSG, 47 #, L-80 BTRS, ID = 8.681" 1-1 -11465 9 -5/8" MILLOUT WINDOW (Y -20A) 11449' - 11465' Minimum ID 1.92" @ 14617' 2.70' DEPLOYMENT SLEEVE 1 11969 I-17" X 4 -1/2" BKR S -3 PKR, ID = 3.875" I 1 11991' H4-1/2" HES X NIP, ID = 3.813" I 1 12012' H4-1/2" HES X NIP, ID = 3.813" 1 12033 H 7" X 5" BKR ZXP LTP w / 7' TIEBK, ID = 5.250" I 14 -112" TBG, 12.6 #, L -80 IBT -M, .0152 pbf, ID = 3.958" I—I 12 12024' 1- 14 -1/2" WLEG, ID = 3.958" I NI 12050 H 7" X 5" BKR FLEX LOCK LNR HGR, ID = 4.438" I 12059 H5" x 4-1/2" XO, ID = 3.958" I 17" LNR, 26 #, L -80 IBT -M, .0383 bpf, ID = 6.276" I--1 12216' I-J ■ 14 -1/2" COLLAPSED LNR, ID = 3.22" H 12911', 12985', 13112' I-> MILLOUT WINDOW (Y- 20AL2) 14603' - 14612' 14617 -J2.70 "BTT DEPLOYMENT SLEEVE, ID = 1.920" I PERFORATION SUMMARY AL2- REF LOG: SP-SUN MWD /GR/RESISTIVITY ROP ON 03/18/01 & BKR HUGHES LWD ON 11/27/09 2 -3/8" LNR, 4.4# / 4.44 #, L -80 STL, -1 16454' 1 Note: Refer to Production DB for historical perf data .0039 bpf, ID = 1.995" SIZE I SPF I INTERVAL 1 Opn /Sqz I DATE SEE PAGE 2 FOR PERFORATION INFORMATION MILLOUT WINDOW (Y- 20AL1) 15315' - 15322' 1 1 1 1 Y-20 U ,. � ( � 15340 - 12.70 "BTT DEPLOYMENT SLEEVE, ID = 1.920" I 1�7 - - -- -- — - -- - -- - -- 1FISH- WHIPSTOCK( H 13`x' - -- -- �� -- - -- - -- - -- 1 PBTD H 17417' ! 2 -3/8" LNR, 4.4# / 4.444 #, L -80 STL, -1 16350' 1 •�•�•�• � 14 -1/2" LNR, 12.6#, L -80 NSCT, .0152 bpf, ID = 3.958" H 17509 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOEBAY UNfT 05/31/86 AUDI 2 ORIGINAL COMPLETION 02/01/11 PJC GLV CORRECTIONS WELL: Y -20A / AL1/ AL2 03/30/01 N7ES SIDETRACK (Y -20A) PERMIT No: 2010250, 2090810 (820) 11/29/09 NORDIC 2 CTD SDTRACK (Y -20AL1 & L2) API No: 50- 029 - 21587 - 01(60) (61) 04/05/11 NORDIC 2 FISH WHIPSTOCK SEC 33, TI1N, R13E, 1439' FNL & 347' FEL 04/22/11 JM/PJC GLV /0 (4/14/11) 04/30/11 TH/PJC TBG DEPTH CORRECTIONS BP Exploration (Alaska) • Y -20A • AL 1 &AL2 PERFORATION SUMMARY REF LOG: SP-SUN MWD /GR/RESISTIVITY ROP ON 03/18/01 ANGLE AT TOP PERF: 76° @ 12538' J I, Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn /Sqz DATE Y -20A ** 6 12538 -12548 0 03/25/01 ** 6 12558 -12580 0 03/25/01 ** 6 12880 -12890 0 03/25/01 i i ** 6 13010 -13020 0 03/25/01 ** 6 13160 -13182 0 03/25/01 ** 6 13430 -13452 0 03/25/01 ** 6 13730 -13752 0 03/25/01 ** 6 13930 -13952 0 03/25/01 ** 6 14020 -14042 0 03/25/01 4 ** 6 14170 -14192 0 03/25/01 ** 6 14208 -14230 0 03/25/01 ** 6 14258 -14280 0 03/25/01 ** 6 14340 -14362 0 03/25/01 ** 6 14378 -14400 0 03/25/01 ** 6 14540 -14562 0 03/25/01 11 ** 6 14590 -14612 0 03/25/01 ** 6 14660 -14682 0 03/25/01 ** 6 14710 -14732 0 03/25/01 ** 6 14820 -14842 0 03/25/01 ** 6 14875 -14885 0 03/25/01 ** 6 14908 -14930 0 03/25/01 ** 6 14958 -14980 0 03/25/01 ** 6 14998 -15010 0 03/25/01 ** 6 15158 -15170 0 03/25/01 ** 6 15190 -15200 0 03/25/01 PERFORATION SUMMARY ** 6 15212 -15222 0 03/25/01 REF LOG: BKR HUGHES LWD ON 11/27/09 ** 6 15234 -15244 0 03/25/01 ANGLE AT TOP PERF: NA ** 6 15256 -15266 0 03/25/01 I • Note: Refer to Production DB for historical perf data ** 6 15310 -15332 0 03/25/01 SIZE SPF INTERVAL Opn /Sqz DATE ** 6 15378 -15400 0 03/25/01 Y -20AL1 ** 6 15750 -15760 0 03/25/01 2 -3/8" SLTD 15342 - 16318 0 11/13/09 ** 6 15920 -15942 0 03/25/01 Y -20AL2 ** 6 15968 -15990 0 03/25/01 2 -3/8" SLTD 14618 - 16105 0 11/25/09 ** 6 16310 -16332 0 03/25/01 2 -3/8" SLTD 16271 - 16334 0 11/25/09 ** 6 16370 -16392 0 03/25/01 ** 6 16428 -16450 0 03/25/01 _ ** 6 16570 -16582 0 03/25/01 = _ _ _ _ _ _AL2 _ ** 6 16810 -16820 0 03/25/01 ** 6 16890 -16912 0 03/25/01 ** 6 16945 -16955 O 03/25/01 ** 6 16970 -16992 0 03/25/01 ** 6 17018 -17040 0 03/25/01 ** 6 17070 -17092 0 03/25/01 ** 6 17120 -17142 0 03/25/01 ** 6 17160 -17170 0 03/25/01 Y-20 ** 6 17240 -17252 0 03/25/01 _ _ ** 6 17290 -17300 0 03/25/01 �' ** 6 17340 -17362 0 03/25/01 ** 6 17388 -17410 0 03/25/01 ■ � • � • � • 4 * *2 -1/2" & 2 -3/4" SCALLOPPED GUNS DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 05/31/86 AUDI 2 ORIGINAL COMPLETION 02/01/11 PJC GLV CORRECTIONS WELL: Y -20A / AL1/ AL2 03/30/01 N7ES SIDETRACK (Y -20A) PERMIT No: 2010250, 2090810 (820) 11/29/09 NORDIC 2 CTD SDTRACK (Y -20AL1 & L2) API No: 50- 029 - 21587- 01(60) (61) 04/05/11 NORDIC 2 FISH WHIPSTOCK SEC 33, TI1N, R13E, 1439' FNL & 347' FEL 04/22/11 JM/PJC GLV C/O (4/14/11) 04/30 /11 TH /PJC TBG DEPTH CORRECTIONS BP Exploration (Alaska) • bp BP Exploration (Alaska) Inc. 4 Attn: Well Integrity Coordinator, PRB -20 Post Office Box 196612 Anchorage, Alaska 99519 -6612 December 20, 2010 2f id WNW .1,4N 2 4 2011 Mr. Tom Maunder Alaska Oil and Gas Conservation Commission, Al 333 West 7th Avenue Anchorage, Alaska 99501 �, M .. r ; SiOR Subject: Corrosion Inhibitor Treatments of GPB Y Pad.. Dear Mr. Maunder, .o Enclosed please find multiple copies of a spreadsheet with a list of wells from Y Pad that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, API and PTD numbers, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10 -404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Jerry Murphy, at 659 -5102. Sincerely, Torin Roschinger BPXA, Well Integrity Coordinator 0 • BP Exploration (Alaska) Inc. Surface Casing by Conductor Annulus Cement, Corrosion inhibitor, Sealant Top -off Report of Sundry Operations (10 -404) Date: 12/20/10 Corrosion Well Initial top of Vol. of cement Final top of Cement top off Corrosion inhibitor/ Name PTD # API # cement pumped cement date inhibitor sealant date ft bbls ft na gal Y -01B 2010760 50029203940200 NA 2.5 NA 8.50 4/11/2010 Y - 02A 2011730 50029203950100 NA 0.1 NA 0.85 4/11/2010 Y - 03A 2042350 50029204110100 NA 2.2 NA 18.70 4/16/2010 Y - 04 1791050 50029204230000 NA 1 NA 5.10 4/11/2010 Y - 05B 2081380 50029204360200 NA 3.3 NA 20.40 4/15/2010 Y - 06A 2042510 50029204310100 NA 0.7 NA 3.40 4/16/2010 Y - 07A 2071050 50029205600100 14.5 2.0 0.3 NA 1.70 8/4/2010 Y - 08A 1880560 50029205720100 NA 4 NA 15.30 8/5/2010 Y -09A 1970830 50029205790100 19 1.5 3.6 NA 17.00 8/4/2010 Y -10A 2042500 50029205870100 19 3.0 8.75 NA 54.40 8/6/2010 Y -11 C 2051640 50029205130300 NA 0.1 NA 0.90 4/14/2010 Y -13 1811120 50029206340000 NA 0.4 NA 3.40 4/15/2010 Y -148 2011010 50029218320200 NA 3.8 NA 20.40 4/10/2010 Y - 15A 2010890 50029209400100 NA 2.1 NA 11.90 4/10/2010 Y -16 1830490 50029209320000 18.8 2.0 1.7 NA 10.20 8/4/2010 Y -18 1830290 50029209160000 _ NA 0.8 NA 5.10 4/9/2010 Y - 19 1880960 50029218570000 NA _ 0.2 NA 0.85 4/15/2010 )Y -20A 2010250 50029215870100 NA 1.5 NA 11.90 4/14/2010 Y - 21A 1950370 50029215740100 NA 0.1 NA 1.70 4/13/2010 Y - 22A 1881150 50029215580100 NA 0.5 NA 3.40 8/4/2010 Y -2313 2031640 50029215900200 NA 1.2 NA 6.80 4/13/2010 Y - 24 1861130 50029216080000 NA 1 NA 6.80 4/12/2010 Y - 25A 2081400 50029218830100 NA 0.3 NA 1.70 4/18/2010 Y - 26A 2010430 50029221910100 NA 0.3 NA 1.70 4/15/2010 Y - 27 1900280 50029220190000 NA 0.5 NA 3.40 4/14/2010 Y -28 1910650 50029221690000 NA 3.5 NA 28.90 4/12/2010 Y - 29A 1960910 50029221230100 NA 0.2 NA 1.70 4/13/2010 Y - 30 1910150 50029221350000 NA 0.5 NA 2.60 4/13/2010 Y - 31 1910560 50029221610000 NA 0.5 NA 3.40 4/12/2010 Y - 32 1910410 50029221490000 NA 0.3 NA 1.70 4/18/2010 Y - 33 1910300 50029221440000 NA 0.9 NA 6.80 4/12/2010 Y -34A 1990040 50029221780100 NA 0.9 NA 5.10 4/11/2010 Y - 35A 2022370 50029221860100 NA 1.5 NA 10.20 4/15/2010 Y - 36 1931310 50029224000000 NA 0.9 NA 5.95 4/10/2010 Y -37A 2020460 50029224030100 NA 0.8 NA 6.00 4/14/2010 • • Page 1 of 1 Saltmarsh, Arthur C (DOA) From: Hubble, Terrie L [Terrie.Hubble@bp.comJ Sent: Monday, February 08, 2010 12:26 PM To: Saltm r~Qrt ~.r ~~D4?1 .~- Subject: PB Y-20A ML / PTD # 201-025 / 09-081 / 209-082 Hi Art, Please reference the following well: Well Name: PBU Y-20A, Y-20AL1, Y-20AL2 Permit #: 201-025 / 209-081 / 209-082 API #: 50-029-21587-01-00 / -60-00 / -61-00 Top Perf Y-20A MD: 12538' Bottom Perf Y-20A MD: 17410' i ~~~ ~ ~ ~C~ii Top Slotted Section Y-20AL1 MD: 15342' Bottom Slotted Section Y-20AL1 MD: 16318' Top Slotted Section Y-20AL2 MD: 14618' Bottom Slotted Section Y-20AL2 MD: 16334' This well began Production on February 1, 2010 Method of Operations is: Gas Lifted Date of Test: 02/06/10 Hours Tested: 8 24-Hour Rate /Oil-Bbl: 1,073 24-Hour Rate /Gas-Mcf: 584 24-Hour Rate /Water-Bbl: 1,533 Test Rate /Oil-Bbl: 358 Test Rate /Gas-Mcf: 195 Test Rate /Water-Bbl: 511 Choke Size: 96 Gas-Oil Ration: 544 Flow Tubing Pressure: 200 Casing Pressure: 1,300 Oii Gravity-APi: 22 2!8;'2010 e e MICROFILMED 07/25/06 DO NOT PLACE ANY NEW MATERIAL UNDER THIS PAGE F:\LaserFiche\CvrPgs _ Inserts\Microfilm _ Marker. doc Permit to Drill 20'10250 MD 17514 _J TVD DATA SUBMITTAL COMPLIANCE REPORT 4116/2003 Well Name/No. PRUDHOE BAY UNIT Y-20A Operator BP EXPLORATION (ALASKA) INC 9069/'~ Completion Dat 3/30/2001~ -~'~- Completion Statu 1-OIL Current Status 1-OIL APl No. 50-029-21587-01-00 UIC N REQUIRED INFORMATION Mud Log N._.~o Sample No Directional Survey DATA INFORMATION Types Electric or Other Logs Run: Well Log Information: Log/ Data Digital Digital Type/,.Media F~,,~ Log Log Run Name Scale Media No (data taken from Logs Portion of Master Well Data Maint) Interval Start Stop OH I Dataset CH Received Number Comments ED ~ Ver LIS Verification Rp~/ Ver LIS Verification ED ~ Cn See Notes Mu~s~ey irectional FINAL Directional FINAL Directional Survey FINAL ,~e~tional Survey FINAL 4/12/2001 MWD Directional Survey Digital data 4/12/2001 MWD Directional Survey Paper Copy 4/12/2001 Directional Survey Paper Copy 4/12/2001 Directional Survey Digital Data 11336 17449 Open 7/2/2002 11336 17449 Open 7/2/2002 11337 17514 .case 12/13/2002 Digital Well Logging Data/ /~ , Rate of Penetration, Du? Gamma Ray, r/' Electromagnetic Wave .,..~__ Resistivity Well Cores/Samples Information: Name Start Interval Stop Sent Received Dataset Number Comments ADDITIONAL INFORMATION Well Cored? Y/~) Chips Received? ~ Analysis Y / N R P.c.~.iv~.d ? Daily History Received? Formation Tops Comments: Permit to Drill 20t 0250 MD 17514 TVD DATA SUBMITTAL COMPLIANCE REPORT 4116/2003 Well Name/No. PRUDHOE BAY UNIT Y-20A Operator BP EXPLORATION (ALASKA) INC 9069 Completion Dat 3/30/2001 Completion Statu 1-OIL Current Status 1-OIL APl No. 50-029-21587-01-00 UIC N Compliance Reviewed By: Date: To: WELL LOG TRANSMITTAL State of Alaska Alaska Oil and Gas Conservation Comm. Attn.: Lisa Weepie 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 September 16, 2002 MWD Formation Evaluation Logs ' Y-20A, AK-MM-10057 Y-20A: Digital Log Images 50-029-21587-01 1 CD Rom PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Sperry-Sun Drilling Services Attn: Jim Galvin 6900 Arctic Blvd. Anchorage, Alaska 99518 BP Exploration (Alaska) Inc. Petro-technical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date: RECEIVED DEC 1 5 2002 ~da~ka 0;~I & Gas Ca~s. Cemmissio~, A~ckom~qe / 0~o WELL LOG TRANSMITTAL To: State of Alaska June 26, 2002 Alaska Oil and Gas Conservation Comm. Attn.' Lisa Weepie 333 West 7th Avenue, Suite 100 Anchorage, Alaska RE: MWD Formation Evaluation Logs Y-20I~ AK-MM-10057 1 LDWG formatted Disc with verification listing. API#: 50-029-21587-01 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Sperry-Sun Drilling Services Attn: Jim Galvin 6900 Arctic Blvd. Anchorage, Alaska 99518 BP Exploration (Alaska) Inc. Petro-Technical Data Center LR2-1 900 E. Benson 'Blvd. Anchorage, Alaska 99508 Date: RECEIVED "" £ .2002 Alask, Oil & Ga~ Cons. Commission An~orage o. ALASKA OIL AND GAS CONSERVATION COMMISSION 1. Status of Well Classification of Service Well [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number BP Exploration (Alaska) Inc. 201-025 3. Address ,8. APl Number P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21587-01 4. Location of well at surface i [,'...i,i'" ' -'.' ': '~. - 9. Unit or Lease Name ,,, Prudhoe Bay Unit 1440' SNL, 347' WEL, SEC. 33, T11N, R13E, UM At top of productive interval At total depth Y-20A 5008' SNL, 4587' WEL, SEC. 04, T10N, R13E, UM 11. Field and Pool 5. Elevation in feet (indicate KB, DF, etc.) 6. Lease Designation and Serial No. Prudhoe Bay Field / Prudhoe Bay Pool KBE -- 78.25' ADL 047471 12. Date Spudded 3/4/2001 113' Date T'D' Reached 114' Date COmp'' Susp'' Or Aband' 3/18/2001 3/30~2001 [ 15. Water depth, if offshore N/A MS L II 16' N°' °f C°mpleti°ns One 17. Total Depth (MD+TVD) 118. Plug Back Depth (MD+TVD) 119. Directional Survey 1 20. Depth where SSSV setI 21. Thickness of Permafrost 17514 9069 FTI 17422 9060 FTI [] Yes [] NoI (Nipple) 2197' MDI 1900' (Approx.) 22. Type Electric or Other Logs Run MWD, GR, RES, PWD, CCL, ABI 23. CASING, LINER AND CEMENTING RECORD CASING SETTING DEPTH HOLE SIZE WT. PER FT. GRADE TOP BOTTOM SIZE CEMENTING RECORD AMOUNT PULLED 20" Insulated Conductor Surface 110' 8 cu },ds Concrete 13-3/8" 72# L-80 40' 3095' 17-1/2" 4389 cu ft Permafrost 9-5/8" 47# L-80 38' 11449' 12-1/4" 920 cu ft Class 'G' 7" 26# L-80 11278' 12216' 8-1/2" 286 cu ft Class 'G' 4-1/2" 12.6# L-80 12038' 17514' 6-1/8" 803 cu ft Class 'G' 24. Perforations op. en to. Producti.on (MD+TVD of Top and 25. TUBING RECORD Bottom and in[ervah size and number) SIZE DEPTH SET (MD) PACKER SET (MD) 2-1/2 & 2-3/4" Gun Diameter, 6 spf 4-1/2", 12.6#, 13Cr80 12024' 11969' MD TVD MD TVD 12538' - 17410' 9037' - 9059' ~EEE~VE~ 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED Freeze Protect with 160 Bbls of Diesel 1 8 2001 ,Alaska Oil & Gas Go'ns. (;ommissim~,, 27. A~lcl~0rag~ PRODUCTION TEST Date First Production Method of Operation (Flowing, gas lift, etc.) April 10, 2001 Gas Lift Date of Test Hours Tested PRODUCTION FOR OIL-BBL GAS-MCF WATER'BBL CHOKE SIZE I GAS-OIL RATIO 5/1/2001 4 TEST PERIOD 2621 3888 762 94.59I 1484 Flow Tubing 3asing Pressure CALCULATED OIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-APl (CORR) Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. Form 10-407 Rev. 07-01-80 Submit In Duplicate 29. Geologic Markers 30. Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids recovered Marker Name Depth Depth and gravity, GOR, and time of each phase. JB 11950' 8743' JA 12054' 8800' Sag River 12208' 8890' Shublik 12237' 8907' Eileen 12370' 8977' Sadlerochit 12387' 8984' 31. List of Attachments: Summary of Dally Drilling Reports, Surveys 32. I hereby certify that the foregOing is true and correct to the best of my knowledge Signed T, rrieHubb,e..,.-~j~~/'~ ' ~ Title TechnicalAssistant Date Y-20A 201-025 Prepared By Name/Number: Terrie Hubble, 564-4628 Well Number Permit No. / Approval No. ~NSTRUCTIONS GENERAL: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITEM 1: Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. ITEM 5,' Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. ITEM 16 AND 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. ITEM 21: Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). ITEM 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. ITEM 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut~In, Other-explain. ITEM 28: If no cores taken, indicate 'none'. Form 10-407 Rev. 07-01-80 BP EXPLORATION page1 of 10 OperatiOns Summa Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: ELEC Rig Name: NABORS 7ES Rig Number: N7ES Date: FrOm-T° Hours TaSk Sub: phase ' DesCriptiOn of Operations Code , 2/27/2001 00:00 - 01:30 1.50 DHEQP DECOMP R/U Schlumberger and RIH w/8.5" gauge ring/junk basket to 11640' elm 01:30 - 05:00 3.50 STWHIP LNR1 M/U 9 5/8" EZSV on wireline, RIH, set at 11,600' elm, had good surface indication that Baker 20 fired, unable to pull wireline free f/EZSV 05:00 - 08:00 3.00 FISH LINE LNR1 PJSM, R/U T-bar to wireline, pull out of cable head w/7K over, POH, recovered wireline, RID Schlumberger, top of fish at 11580' - Baker model 20 w/HES setting sleeve kit 3/2/2001 20:30 - 00:00 3.50 STWHIP JUNK LNR1 PJSM on W/L handling and running Procedures, R/U W/L, RIH w/ GR-CCL-CPST setting tool-9 5~8" CIBP to 11490' 3/3/2001 00:00 - 01:30 1.50 STWHIP JUNK LNR1 Ran strip log, tie-in to Bridge Plug Setting Record log dated 27-Feb-2001, Set ClBP at 11456' ELM(uncorredted W/L Depth), 3' above casing collar, POH w/W/L, PJD ScM RECEI'VED '1 8 2001 .~!,]~ska 0il & Gas Cons. C0mmissior,, Anchorage,~ Printed: 4/12/2001 10:29:13AM BP EXPLORATION Page2 of 10 Operations Summary Report ' Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG Rig Name: NABORS 7ES Rig Number: N7ES Sub Date From ,To HourS Task Code Phase Description of Operations .. 2/20/2001 00:00 - 01:00 1.00 MOB PRE PJSM w/Peak. Secure cellar. 01:00 - 05:30 4.50 MOB PRE Move rig off P-20B. Remove snow from side of road. Moved rig to mile 2 of P pad road. Rear wheel off road. 05:30 - 09:00 3.50 MOB PRE Assessed incident potential. Formed plan, no pipelines or power lines in area. Stabilized rig with D-8 cats. Backed rig into center of road. 09:00 - 10:00 1.00 MOB PRE PJSM. Moved rig to pipeline road. 10:00 - 11:00 1.00 MOB PRE Incident review. Nabors review of how wheel steered off road. Stressed no margin for error on pipeline road, GC-2 areas. 11:00 - 18:00 7.00 MOB PRE Continued rig move to Spine Road, GC-2 road, and on to Y pad. 18:00 - 00:00 6.00 MOB PRE R/U on Y pad and raise derrick while wait on wellhouse removal and pad prep. Moved pits, camp and shop from P pad to Y pad. R/U top drive, rig floor, cattle chute. 2/21/2001 00:00 - 06:00 6.00 RIGU PRE Set matts over well. PJSM. Spot sub base over well. Spot mud pits, shop and camp. Set cuttings tank. Rig accepted 0600 hrs 2/21/2001. 06:00 - 08:30 2.50 RIGU PRE Berm cuttings tank. Secure cellar doors. Hook up pits. Take on seawater. 08:30 - 09:00 0.50 RIGU PRE Held pre-spud safety and environmental meeting. 09:00 - 10:30 1.50 RIGU PRE Installed secondary annular valve on tree. PJU lines to circulate. 10:30 - 11:30 1.00 RIGU PRE R/U lubricator and pulled BPV. 11:30 - 12:30 1.00 RIGU PRE Finished R/U lines to circulate diesel to outside cuttings tank. 12:30 - 20:30 8.00 RIGU PRE Circulate diesel freeze protect from well. Circulate B/U with seawater to pits. 3 BPM, 450 psi. RID Lines. 20:30 - 21:00 0.50 RIGU PRE Installed TWC and tested from below to 750 psi. 21:00 - 22:30 1.50 RIGU PRE N/D adapter flange and tree. Verify hanger threads, ok. Terminate control lines. 22:30 - 00:00 1.50 RIGU PRE N/U BOP's. 2/22/2001 00:00 - 01:30 1.50 RIGU PRE N/U BOP. 01:30 - 07:30 6.00 RIGU PRE Test BOP's. Tested pipe rams, blind rams, hydril, choke and kill line valves, floor safety valves, and choke manifold to 250~3500 psi. (Could not test lower pipe rams, XO in way). Function tested accumulator. Witness of test waived by John Crisp, AOGCC. LID tools, cleared floor. 07:30 - 08:30 1.00 RIGU PRE R/U lubricator and pulled TWC. 08:30 - 10:00 1.50 PULL DECOMP M/U landing jt and screw into hanger. BOLDS. Pulled hanger to rig floor, came free at 185K. PU wt = 155K. 10:00 - 11:00 1.00 PULL DECOMP R/U tongs and HES spooling unit. 11:00 - 23:00 12.00 PULL DECOMP LID landing jt and tubing hanger. Pull completion tubing, spooling balance and control line. Recovered 47 clamps and 2 SS bands. Cont'd L/D 4-1/2" tubing. Recovered 286 jts 4-1/2" BTR tubing + 26.58' cut jt. 23:00 - 00:00 1.00 PULL DECOMP LID tubing tongs and clean rig floor. 2/23/2001 00:00 - 01:00 1.00 PULL DECOMP Clear rig floor. 01:00 - 02:00 1.00 BOPSUF~ DECOMP Tested lower pipe rams to 250~3500 psi. 02:00 - 03:00 1.00 BOPSUI; DECOMP 'Installed wear bushing. 03:00 - 06:00 3.00 PULL DECOMP M/U fishing BHA #1. Overshot/grappel for 4-1/2" tubing stub. 06:00 - 16:00 10.00 PULL DECOMP RIH picking up 4" drill pipe. 16:00- 17:00 1.00 PULL ~DECOMP Got slowpump rates. P/U = 200K, S/O =150K, Rot= 175K, 7K ft-lbs tq. Swallowed and caught fish. 17:00 - 19:00 2.00 PULL 'DECOMP Jarred on fish to increasing increments from 250K to 350K. No good, would not pull out of PBR. 19:00 - 19:30 0.50 PULL DECOMP Performed blind backoff. Printed: 4/12/2001 10:29:13AM BP EXPLORATION Page3 of 10 Operations Summa Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG Rig Name: NABORS 7ES Rig Number: N7ES Sub Date From To Hours Task Code Phase DescriPtion of Operations , 2/23/2001 19:30 - 20:30 1.00 PULL DECOMP CBU. 12 bpm, 1850 psi. 20:30 - 00:00 3.50 PULL DECOMP POH. 2/24/2001 00:00 - 03:00 3.00 PULL DECOMP Finish POH. 03:00 - 03:30 0.50 PULL DECOMP L/D 13.1' cut jt fish. 03:30 - 06:00 2.50 PULL DECOMP P/U BHA #2, 60' washpipe to mill over GLM. 06:00 - 07:00 1.00 PULL DECOMP Cut and slip drilling line. 07:00 - 08:00 1.00 PULL DECOMP Service top drive. 08:00 - 15:30 7.50 PULL DECOMP RIH to 11,577'. 15:30 - 19:30 4.00 PULL DECOMP Wash to 11,629', TOF DPM, and milled over GLM. 19:30 - 21:00 1.50 PULL DECOMP Washed to 11,671' while pumping hi-visc sweep. 12 BPM, 1850 psi. No metal returns. 21:00 - 00:00 3.00 PULL DECOMP POH to 5125' at report time. 2/25/2001 00:00 - 02:30 2.50 PULL DECOMP Finish POH. 02:30 - 03:30 1.00 PULL DECOMP LID 1 jt of washpipe, ring from junk damage near connection. L/D h3illing shoe, medium wear. 03:30 - 04:30 1.00 PULL DECOMP .P/U 3 jts washpipe and new milling shoe. 04:30 - 10:30 6.00 PULL DECOMP RIH to 11,671'. 10:30 - 18:30 8.00 PULL DECOMP Washover tubing f/11,671' to 11,686'. Rotary stalling, 15K fi-lb. Work pipe, attempt to make progress. No forward progress. P/U=205K S/O=145K Rot=185K 18:30 - 21:00 2.50 PULL DECOMP .Pmp dry job and POH to 7788' 21:00 - 22:00 1.00 PULL DECOMP Service top drive, hook up to hi-line power. 22:00 ~ 0.00 PULL DECOMP POH. 2/26/2001 00:00 - 01:00 1.00 PULL DECOMP P, OH. 01:00 - 02:00 1.00 PULL DECOMP LID oil jars, 60' wash pipe, mill shoe. Shoe 100% worn. 02:00 - 04:30 2.50 PULL DECOMP P/U outside cutter fishing BHA. 04:30 - 08:30 4.00 PULL DECOMP RIH tJ 9979'. 08:30 - 09:30 1.00 PULL DECOMP Gut and Slip drilling line. Service top drive. 09:30- 10:00 0.50 PULL DECOMP RIHtoTOF@ 11,629'. 10:00 - 12:00 2.00 PULL DECOMP Wash over fish. P/U and locate collar on pup jt below GLM @11659'. Rotate to cut tbg. 12:00 - 17:00 5.00 PULL DECOMP POH to BHA. 17:00 - 19:00 2.00 PULL DECOMP LID washpipe and BHA to fish. Hang off fish in jt washpipe and tbg cutter. 19:00 - 20:00 1.00 PULL DECOMP ,Closed blind rams and pressured 9-5~8" casing to 3000 psi, could not .inject. Held 3000 psi on chart for casing test, 30 min. Bled off 100 psi. (ok) 20:00 - 22:30 2.50 PULL DECOMP VD fish, washpipe, cutter. Recovered 27.47' GLM & pups, 21.8' of full jt below GLM pup. Partial cut by cutter on pup it. Full jt twisted off, partialy sliced during previous milling. 22:30 - 00:00 1.50 DHEQP DECOMP R/U Schlumberger and RIH w/8.5" gauge ring/junk basket. 2/27/2001 08:00 - 09:30 1.50 FISH LINE LNR1 PJSM, P/U fishing assy - 8 1/8" overshot w/3 5/8" grapple 09:30- 13:30 4.00 FISH LINE LNR1 RIH to 11513', P/U wt 210 k, S/Owt 145 k 13:30 - 14:30 1.00 FISH. LINE LNR1 Brk circ, wash down, tag, engage fish at 11574' dpm, p/u 15 k over, set dn 15 k on fish, P/U, sheared out of EZSV w/15 k over 14:30 - 15:30 1.00 FISH LINE LNR1 Drop dart, open pump out sub, slug pipe 15:30 - 20:30 5.00 FISH LINE LNR1 ;POH to BHA 20:30 - 21:30 1.00 FISH LINE LNR1 LID fish and fishing tools, 100 % recovery of fish 21:30 - 22:00 0.50 FISH LINE LNR1 i Clear and clean rig floor 22:00 - 00:00 2.00 STWHIP LNR1 PJSM, P/U whipstock tools, M/U 9 5/8" Baker btm trip anchor whipstock on 8" starter mill, 8" lower mill, 8 1/2" upper mill, 1 jt of HWDP, bumber Printed: 4/12/2001 10:29:13AM BP EXPLORATION Page4 of 10 Operations Summa Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG Rig Name: NABORS 7ES Rig Number: N7ES Sub Date From-To Hours Task Code Phase DeSCription°f Operations 2/27/2001 22:00 - 00:00 2.00 STWHIP LNR1 sub, float, flex jr, hos 2/28/2001 00:00 - 10:30 10.50 STWHIP LNR1 RIH w/9 5~8" baker btm trip ancher whipstock assy on 4" DP to 11545', est P/U wt 220 k, S/O wt 155 k, circ, orient to 65 R of high side, slacked off, tag EZSV at 11593' DPM, set whipstock w/20 k dn, good surface indication of pins sheared, P/U, pull 5 k over to check anchor set, S/O 45 k dn to shear off whipstock, good surface indication of bolt sheared, Top of whipstock slide at 11570' 10:30 - 13:30 3.00 STWHIP LNR1 PJSM w/all involved personnel on mud displacement, displaced seawater w/11.3 ppg LSND-HT mud at 10 bpm, 1650 -2600 psi, overdisplaced by 200 bbls, mud wt in 11.3 ppg, mud wt out 10.9 ppg 13:30 - 17:00 3.50 STWHIP LNR1 Circ and cond to raise mud wt to 11.3 ppg in/out w/10 bpm at 2625 psi 17:00 - 00:00 7.00 STWHIP LNR1 IV)illing window f/11571' - 11585' w/10.5 bpm at 2850 psi, 120 rpm, 10 - 14 k of torque, p/u 215 k, s/o 155 k, rot 175 k 3/1/2001 00:00 - 04:30 4.50 STVVHIP LNR1 Milling window f/11585' - 11599' w/10 bpm at 2600 psi, 434 gpm, 120 rpm, 10 kwob, 10 - 14 k of torque, p/u 215 k, s/o 155 k, rot 175 k 04:30 - 06:30 2.00 STWHIP LNR1 Circ hole clean w/hi-vis sweep at 10 bpm w/2650 psi while reciprocating and rotating through window, recovered +/- 160 lbs of metal shavings in returns while milling &circ 06:30 - 11:00 4.50 STWHIP LNR1 PJSM on tripping, monitor well, stable, slug pipe, POH to BHA 11:00 - 13:00 2.00 STWHIP LNR1 L/D DC's and mill assy, 8 1/2" upper mill in gauge, all mills looked good 13:00 - 14:00 1.00 STWHIP LNR1 Clear and clean rig floor 14:00 - 15:00 1.00 STVVHIP LNR1 Pull wear bushing, flush out stack ;15:00 - 18:00 3.00 BOPSUF LNR1 PJSM on testing BOPe's, R/U test equipment, Test Bop stack as follows, all rams, valves, annular and lines fl 250 - 3500 psi as per state reg's, RID test equipment, John Crisp w/AOGCC waived witnessing BOP test, choke manifold was tested f/250 -3500 psi while TOH 18:00 - 18:30 0.50 BOPSUF LNR1 Install wear bushing 18:30 - 21:30 3.00 DRILL LNR1 PJSM on handling and running BHA, P/U 1 1/4 degree mtr, 8 1/2" MXC1 bit, MWD-GR-RES-PWD, orient, upload and test MWD, RIH w/ 5" HWDP to 727' 21:30 - 22:00 0.50 DRILL LNR1 Shallow hole test MWD, OK 22:00 - 23:00 1.00 DRILL LNR1 Slip and cut 95' of Drill line 23:00 - 00:00 1.00 DRILL LNR1 Service Top Drive 3/2/2001 00:00 - 04:30 4.50 DRILL LNR1 RIH w/BHA, 1 1/4 degree mtr, 8 1/2" MXC1 bit, MWD-GR-RES-PWD mtr, on 4" DP to 11372' 04:30 - 05:30 1.00 DRILL LNR1 Madd pass tie-in log w/mwd-gr f/11372-11560' 05:30 - 10:30 5.00 DRILL LNR1 Orient mtr to 65 R of HS, attempt to work through window at 11472', no go, many attempts at various orientations, no success 10:30 - 15:00 4.50 DRILL JUNK LNR1 POH to BHA 15:00 - 17:30 2.50 DRILL JUNK LNR1 POH w/BHA, Download MWD, LID BHA, bit was cored out w/all inner row teeth groud smooth to cone 17:30 - 18:30 1.00 STWHIP JUNK LNR1 PJSM on handling BHA, P/U, 9 DC's, std back in derrick 18:30 - 20:30 2.00 STWHIP JUNK LNR1 Performing general rig maintenance while waiting on W/L to arrive on location 3/3/2001 01:30 - 05:00 3.50 STWHIP JUNK LNR1 PJSM, P/U whipstock tools, M/U 9 5/8" Baker btm trip anchor whipstock on 8" starter mill, 8" lower mill, 8 1/2" upper mill, 1 jt of HWDP, bumber sub, float, flex jr, hos, rih w/dc's and hwdp, surface test mwd, ok 05:00 - 14:00 9.00 STWHIP JUNK LNR1 RIH w/9 5/8" baker btm trip ancher whipstock assy on 4" DP to 11420', est P/U wt 206 k, S/O wt 148 k, circ, orient to 58 R of HS, slacked off, tag CIBP at 11474' DPM, set whipstock w/18 k dn, good surface indication of pins sheared, P/U, pull 5 k over to check anchor set, checked orientation at 58 R of HS, S/O 38 k dn to shear off whipstock, good surface indication of bolt sheared, Top of whipstock slide at Printed: 4/12/2001 10:29:13 AM BP EXPLORATION Page5 of 10 Operations Summa Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG Rig Name: NABORS 7ES Rig Number: N7ES Sub Phase Description of Operations ' Date From'To: Hours Task Code · 3/3/2001 05:00- 14:00 9.00 STWHIP JUNK LNR1 11449' 14:00 - 00:00 10.00 S'I'WHIP JUNK LNR1 Milling window f/11449' - 11465', drill formation f/11465'- 11479 (note: undergage hole at 8" f/11470-11479)w/10.5 bpm at 2600 psi, 2-12 k web, 50 - 120 rpm, 445 gpm, 10 - 14,000 ftlbs of torque, p/u 206 k, s/o 148 k, rot 190 k 3/4/2001 00:00 - 02:30 2.50 S'I'WHIP! JUNK LNR1 Circ hole clean w/hi-vis sweep at 10 bpm w/2650 psi while reciprocating and rotating through window w/pumps on & off, recovered +/- 185 lbs of metal shavings in returns while milling & circ 02:30 - 08:30 6.00 STVVHIP JUNK . LNR1 PJSM on tripping, Monitor well, stable, POH to BHA 08:30 - 11:00 2.50 S'I'WHIP JUNK LNR1 POH w/HVVDP, L/D DC's, MWD, Mill ^ssy 11:00 - 11:30 0.50 STWHIP JUNK 'LNR1 Clear and clean rig floor 11:30- 12:00 0.50 STWHIP JUNK LNR1 Pull wear bushing 12:00 - 13:00 1.00 STWHIP JUNK LNR1 Flush out wellhead and bop stack 13:00- 14:00 1.00 STWHIP JUNK LNR1 Run wear bushing 14:00 - 16:30 2.50 DRILL JUNK LNR1 P/U, M/u BHA - 1 1/4 degree motor, MWD-GR-RES-PWD, orient, ; upload, RIH w/BHA to 820', surface test MWD, OK. 16:30 - 17:30 1.00 DRILL JUNK LNR1 ~Cut and slip drill line 17:30 - 18:00 0.50 DRILL JUNK LNR1 Service top drive and crown 18:00 - 23:00 5.00 DRILL JUNK LNR1 RIH to 11372', orient bit to 80 R of HS, slacked off to 11470', washed to 11485', no problems going through window f/11449 - 11465' 23:00 - 23:30 0.50 DRILL LNR1 Drld and survey w/1 1/4 motor, MWD-GR-RES-PWD f/11479 - 11485, AST .25 hrs 23:30 - 00:00 0.50 DRILL LNR1 Clrc at 11485', 9 3/4 bpm 2450 psi, 408 gpm 3/5/2001 00:00 - 00:30 0.50 DRILL LNR1 Circ w/11.3 ppg in/out 00:30 - 01:30 1.00 DRILL LNR1 Perform FIT to 12.4 ppg emw at 11465' md/8482' tvd, pumped 1.6 bbls at 1/4 bpm to 485 psi w/11.3 ppg mw, s/d pumps pressure stabilized at 404 psi in 10 rains, Bled off, rec'd 1.5 bbls 01:30- 16:00 14.50 DRILL LNR1 Drld and survey w/1 1/4 motor, MWD-GR-RES-PWD f/11485- 11934', art 7.3 hrs, ast 4.2 hrs 16:00 - 18:30 2.50 DRILL CIRC LNR1 Pop off leaking on # 1 pump, S/D pump, POH w/1 std, Circ at 11840 - 11741 w/pump # 2 at 105 spin, 1325 psi, 257 gpm, 30 rpm and 6-7000 ftlbs-torq while changing out pop off valve and seat on # 1 pump 18:30 - 00:00 5.50 DRILL LNR1 Drld and survey w/1 1/4 motor, MVVD-GR-RES-PWD f/11934'- 12142', art 4.5 hrs, ast 0 hrs 3/6/2001 00:00 - 01:30 1.50 DRILL LNR1 Drill & survey w/1 1/4 Deg mtr, MWD-GR-RES-PWD, f/12,142' to 12,216' (8 1/2" TD). art = 3/4 Hr ast = 0 Hrs. 01:30 - 03:00 1.50 DRILL LNR1 Circulate hole clean, monitor well - static 03:00 - 04:30 1.50 DRILL LNR1 POH to 11,372'. No hole problems. Monitor well - static. RIH to 12,216' w/no hole problems. 04:30 - 07:00 2.50 DRILL LNR1 Circulate hole clean. Sweep hole w/Hi vis sweep. Spot Hi-vis liner pill. Monitor well - static. 07:00 - 14:30 7.50 DRILL LNR1 POH to 11,372' & monitor well - static. Drop steel rabbit & con't POH & L/D BHA # 4. 14:30 - 15:30 1.00 CASE LNR1 Clear floor & PJU 7" Csg equipment. 15:30 - 18:30 3.00 CASE LNR1 PJSM. RIH w/22 jts 7", 26#, L-80, BTC Csg w/Float shoe, float collar, latch collar, & 4 cent to 943'. Circ liner vlume. 18:30 - 00:00 5.50 CASE LNR1 Con't RIH w/DP (filling every 10 stands) to 11349'. 3/7/2001 00:00 - 01:00 1.00 CASE LNR1 M/U cmt hd, circ at 11349', p/u wt 185 k, s/o wt 140 k 01:00 - 05:00 4.00 CASE LNR1 RIH f/11349 - 12121', tight spot w/30 k set dn wt, attempt to wash dn, packed off, p/u to 12061', brk circ at 3 bpm 470 psi, wash dn to 12143', packed off, work pipe, establish circ, wash dn to 12216' 05:00 - 13:00 8.00 CASE LNR1 Break circ, reciprocating pipe, p/u wt 200 k, s/o wt 140 k, stage pumps up in 1/2 bbl increments to 6 bpm at 1230 psi, packed off to 1900 psi, Printed: 4/12/2001 10:29:13AM BP EXPLORATION Page 6 of 10 Operations Summa Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG Rig Name: NABORS 7ES Rig Number: N7ES Sub Date From - To Hours Task Code Phase Description of Operations .......... 3/7/2001 05:00 - 13:00 8.00 CASE LNR1 worked pipe, brk circ, staged up as above to 5.5 bpm at 1050 psi, packed off to 1500 psi, worked pipe free, did not reciprocate pipe, staged up to 3.5 bpm at 800 psi, packed off to 1500 psi, repeated above while reciprocating pipe to 6 bpm at 1200 psi, packed off, added lubetex to system, worked and reciprocated pipe, brk circ, stage up to 4.5 bpm at 859 -775 psi, circ total of two btm's up 13:00 - 15:00 2.00 CASE LNR1 Cement 7" liner, pump 10 bbls CWl00, 50 bbls of 12.3 ppg mudpushxl, 51 bbls 15.8 ppg cmt slurry (243 sx's Class 'G' cmt w/additives yield 1.17 w/5.086 gal/sx water), displace cmt w/139 bbls of 11.3 ppg mud at 4.5 bpm w/246 - 749 psi, bump plug to 1500 psi, ClP AT 1500hrs on 3/7/01, pressured up to 3800 psi, set liner hgr, check floats, OK., ,full returns through job, reciprocated pipe until spacer rounded shoe, set on btm at 12216', Float shoe at 12215', float collar at 12130, insert landing collar at 12128', liner top pkr/hgr at 11278' 15:00 - 17:00 2.00 CASE LNR1 Released f/liner hgr w/20 turns of RH rotatation, pressured up dn pipe to 800 psi, p/u to circ ports on running tool, circ while weight set top of liner packer wi 70 k below s/o wt, rotate at 10 rpm w/70 k below s/o wt, good surface indication of pkr and dogs on running tool shearing, circ two btms up at 12 bpm, returns had traces of cement strung out for 250 bbls on first btms up, circ hole clean 17:00 - 23:00 6.00 CASE LNR1 Slug pipe, L/D cmt hd, POH, L/D Baker liner hgr running tool, Note: tested choke manifold during trip as per AOGCC reg's 23:00 - 23:30 0.50 BOPSUF LNR1 Pull wear bushing 23:30 - 00:00 0.50 BOPSUF LNR1 Testing BOPe's, AOGCC Jeff Jones wavied witnessing BOP test 3/8/2001 00:00 - 03:00 3.00 BOPSUF LNR1 Tested BOP's, annular, all valves, rams and lines f/250 - 3500 psi, R/D, Jeff Jones w/AOGCC waived witnessing BOP test 03:00 - 03:30 0.50 BOPSUF LNR1 Install wear bushing 03:30 - 04:00 0.50 CASE LNR1 R/U, test 7" x 9 5/8" csg to 1500 psi for 5 rain, comfirming top of liner pkr set 04:00 - 09:00 5.00 DRILL LNR1 M/U 1.5 Motor, Bit, MWD-GR-RES-PWD-ABI, orient, upload MWD, RIH, shallow hole test MWD, OK 09:00 - 10:30 1.50 DRILL LNR1 RIH w/BHA, P/U, 40 Jts of 4" DP to 2147' 10:30 - 11:30 1.00 DRILL LNR1 PJSM, Slip and cut drill line 11:30- 12:30 1.00 DRILL LNR1 Service Top Drive 12:30 - 15:30 3.00 DRILL LNR1 RIH w/BHA, P/U, 158 Jts of 4" DP to 6470, test MWD, OK 15:30 - 18:00 2.50 DRILL LNR1 RIH w/BHA on 4" DP to 12043', tag cmt stringer 18:00 - 19:00 1.00 DRILL LNR1 Wash dn f/12043 - 12080' 19:00 - 19:30 0.50 DRILL LNR1 Circ at 5.5 bpm, 2044 psi, 229 gpm, rotate and reciprocate pipe 19:30 - 20:30 1.00 EVAL LNR1 Pressure test 7"x 9 5/8" csg to 3500 psi w/11.3 ppg mud for 30 mins, OK 20:30 - 21:00 0.50 DRILL LNR1 Wash dn f/12080 - 12127' 21:00 - 23:00 2.00 DRILL LNR1 Drill shoe track to 12210', 5' above float shoe at 12215' 23:00 - 23:30 0.50 DRILL LNR1 Drop ball, pumped dn, open PBL 23:30 - 00:00 0.50 DRILL LNR1 Displace well f/11.3 ppg mud to 8.3 ppg quickdrill at 9 - 10.5 bpm, 1800-2728 psi, 374 - 443 gpm 3/9/2001 00:00 - 02:30 2.50 DRILL LNR1 Con't displace hole f/11.3 ppg mud to a 8.4 ppg Quickdrill mud system. 02:30 - 03:00 0.50 DRILL LNR1 Drop steel ball & close PBL (@ 2400 psi). 03:00 - 05:00 2.00 DRILL LNR1 Clean out remainder of cmt & drill to 12,236' ( 20' of open hole). Art = 1 1/4 Hr & asr = 0. 05:00 - 05:30 0.501 DRILL LNR1 Circulate. 05:30 - 06:00 0.50 DRILL LNR1 Shut in well & perform FIT ( t/508 psi w/8.4ppg mud - 9.5 ppg EMW). 06:00 - 00:00 18.00 DRILL LNR1 Dir drill 6 1/8" hole w/1-1/2 Deg mtr f/12,236' t/12,710' w/ mwd=dir-gr-res-pwd-abi. Art -- 1/4 Hr & Asr = 10 1/2 Hrs. Printed: 4/12/2001 10:29:13AM BP EXPLORATION Page7 of 10 · Operations Summa Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG Rig Name: NABORS 7ES Rig Number: N7ES SUb PhaSe DesCriPtion of oPeratiOns Date i From-To Hours Task Code_ , · , , , 3/10/2001 00:00 - 07:00 7.00 DRILL LNR1 Con't Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/12,710' to 12,909'. MWD = dir-gr-res-pwd-abi. Art = 1/2 Hr & Ast= 3 Hr. (stg wt = 209 up, 140 dn, & 170 rot). 07:00 - 11:00 4.00 DRILL LINE LNR1 Flowline connection between the substructure & pit module developed a hole resulting in +/- 4 bbl discharge of drilling fluid. Clean fluid from ground & install new flowline hose. Reciprocate pipe @ 12,909' (210 up & 140 dn). 11:00 - 22:30 11.50 DRILL LNR1 Con't Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/12,909' to 13,124'. MWD= dir-gr-res-pwd-abi. Art = 1-1/4 Hr & Ast = 4-1/2 Hr.. (stg wt = 195 up, 145 tin, & 170 rot). 22:30 - 00:00 1.50 DRILL LNR1 Pump Hi-vis sweep & cir hole clean. 3/11/2001 00:00 - 01:30 1.50 DRILL LNR1 Con't ~ circulate hole clean with hi-vis sweep. 01:30 - 02:00 0.50 DRILL LNR1 Monitor well- static. Short trip f/13124' to 12,150' (7" csg shoe @ 12,216'). No hole problems. 02:00 - 03:00 1.00 DRILL LNR1 I Service top drive ass'y & crown. Check brake linkage. 03:00 - 03:30 0.50 DRILL LNR1 RIH f/12,150' to TD @ 13,124' - No hole problems. 03:30 - 16:30 13.00 DRILL LNR1 Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/13124' to 13,686'. MWD = dir-gr-res-pwd-abi. Art = 4-1/4 Hr & Ast = 3-3/4 Hr. (stg wt = 200k up, 145k tin, & 170 rot). 16:30 - 21:30 5.00 DRILL LNR1 Work pipe through tight hole & circulate hole clean with hi-vis sweep. 21:30-22:30 1.00 DRILL LNR1 Short trip f/13 686' to 13,095' & return to TD w/no hole problems. 22:30 - 00:00 1.50 DRILL LNR1 Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/13,686' to 13,725'. MWD = dir-gr-res-pwd-abi. Art = 0 Hr & Ast = 1/2 Hr. (stg wt = 195k up, 145k dn,& 172k rot) 3/12/2001 00:00 - 08:30 8.50 DRILL LNR1 Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/13,725' to 13,986'. MWD = dir-gr-res-pwd-abi. Art = 1-1/2 Hr & Ast = 3-3/4 Hr. (stg wt = 195k up, 140k dn, & 165k rot) 08:30 - 14:00 5.50 DRILL LNR1 Work pipe through tight hole & circulate hole clean with hi-vis sweep. 14:00 - 14:30 0.50 DRILL LNR1 Monitor well - static. Short trip f/13,986' to 13,565' with no problems. RIH to TD @ 13,986' with no problems. 14:30 - 17:30 3.00 DRILL LNR1 Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/13986' to 14,028'. MWD = dir-gr-=res-pwd-abi. Art = 0 Hrs & Ast = 3/4 Hrs. (stg wt = 195k up, 142k dn,& 167k rot). 17:30 - 18:30 1.00 DRILL CIRC LNR1 Replace upper air boot on flowline riser. 18:30 - 00:00 5.50 DRILL LNR1 Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/14028' to 14,240'. MWD = dir-gr-res-pwd-abi. Art = 1-1/2 Hrs & Ast = 1-1/2 Hrs. (stg wt = 195k up, 140k tin, & 171k rot). 3/13/2001 00:00 - 00:00 24.00 DRILL LNR1 Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/14,240' to 14,880'. MWD = dir-gr-res-pwd-abi. Art = 6-1/2 Hrs & Ast = 7-3/4 Hrs. (stg wt = 195k up, 135k dn, & 170k rot). 3/14/2001 00:00 - 03:00 3.00 DRILL LNR1 Con't ~ Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/14,880' to 14,963'. MWD = dir-gr-res-pwd-abi. Art = 1/2 Hr & Ast = 1=3/4 Hrs. (stg wt = 195k up, 135 dn, & 170k rot) 03:00 - 05:00 2.00 DRILL LNR1 Circulate hole clean with hi-vis sweep. 05:00 - 06:00 1.00 DRILL LNR1 Monitor wel - static. Short trip f/14,963 to 14,025' with no problems. Monitor well - static. TIH & return to TD w/no problems. 06:00 - 00:00 18.00 DRILL LNR1 Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/14,963' to 15,337'. MWD = dir-gr-res-pwd-abi. Art = 1/4 Hrs & Ast = 5-3/4 Hrs. (Stg wt = 200k up, Printed: 4/12/2001 10:29:13AM BP EXPLORATION Page 8 of 10 Operations Summa Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG Rig Name: NABORS 7ES Rig Number: N7ES Sub Phase Description of Operations Date From-To Hours Task Code 3/14/2001 06:00 - 00:00 18.00 DRILL LNR1 135k dn,& 165k rot). 3/15/2001 00:00 - 18:30 18.50 DRILL LNR1 Con't ~ Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/15,337' to 15,804'. MWD = dir-gr-res-pwd-abi. (stg wt = 205k dn, 135k up, & 170k rot). 18:30 - 21:00 2.50 DRILL LNR1 Circulate hole clean with hi - vis sweep. 21:00 - 23:30 2.50 DRILL LNR1 POH into 7" Csg to 11,786' (7" Csg shoe @ 12,216'). No hole problems. 23:30 - 00:00 0.50 DRILL LNR1 PJSM. Slip & Cut drilling line. 3/16/2001 00:00 - 02:30 2.50 DRILL LNR1 Con't ~ slip and cut drilling line (cut 101'), service top drive & change out hydraulic oil, check brake linkage. 02:30 - 03:00 0.50 DRILL LNR1 Pick up additional 4" DP required to reach TD & stand back same ( 12 its). 03:00 - 05:00 2.00 DRILL LNR1 RIH from 11,786' to 15,804', no hole problems. 05:00- 12:30 7.50 DRILL LNR1 Dir drill 6-1/8" w/1-1/2 Deg mtr f/15,804' to 16,118'. MWD = dir-gr-res-pwd-abi (stg wt = 135k dn, 205k up, & 170k rot). Drill fault #9 @ 16,105. ART= 1-1/2 hr &AST= 1-1/2 hr. 12:30 - 13:30 1.00 DRILL CIRC LNR1 Monitor well - 10 rain loss rate = 6 bbl (36 bph rate). Sweep hole w/40 bbl LCM pill. Monitor well & establish static loss rate @ 4 Bbl/hr. 13:30 - 00:00 10.50 DRILL LNR1 Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/16,118' to 16377'. MWD -- dir-gr-res-pwd-abi. (stg wt = 201k up, 130k dn,& 165k rot) 20 Bbl LCM pill pumped & hole monitored w/static loss of 4 Bbl/hr. 3/17/2001 00:00 - 00:00 24.00 DRILL LNR1 Con't ... Dir drill 6-1/8" hole w/1-1/2 Deg mtr f/16,377 to 17,063'. MWD = dir-gr-res-pwd-abi. (stg wt = 205k up, 125k dn,& 170k rot) Lost circulation rate = 13 Bbl/hr. 3/18/2001 00:00 - 07:00 7.00! DRILL LNR1 Con't ~ Dir drill 6-1/8" w/1-1/2 Deg mtr f/17,063' to TD @ 17,514'. MWD = dir-gr-res-pwd-abi. (stg wt = 205k up, 125k dn,& 170k rot) Art = 4-1/2 Hrs & Ast = 1/2 Hr. Lost circulation rate = 12 - 15 Bbls / Hr. 07:00 - 10:30 3.50 DRILL LNR1 Pump Hi-Vis sweep & circulate & condition hole. 10:30 - 14:00 3.50 DRILL LNR1 Monitor well - static. Short trip f/TD @ 17,514' to 12,092' (7" Csg shoe @ 12,216'). No hole problems. 14:00 - 14:30 0.50 DRILL LNR1 Service top drive. 14:30 - 16:30 2.00 DRILL LNR1 RIH f/12,092 to TD @ 17,514'. No hole problems. 16:30 - 20:00 3.50 DRILL LNR1 Pump Hi-Vis sweep & circulate hole clean. Spot 240 Bbl liner running pill on bottom. 20:00 - 00:00 4.00 DRILL LNR1 Monitor well - no flow. Drop 2-1/4" Rabbit, POOH SLM f/TD @ 17,514' to 11,350'. No hole problems. 3/19/2001 00:00 - 04:30 4.50 DRILL LNR1 Con't ~ POH f/11,350' to 5,350'. 04:30 - 06:00 1.50 DRILL LNR1 PJSM. Slip & cut 86' of drillling line, & adjust brakes. 06:00 - 13:00 7.00 DRILL LNR1 Con't ~ POH laying down excess 4" drill pipe, BHA, & MWD Ass'y. 13:00 - 14:00 1.00 DRILL LNR1 Rig down & secure drill pipe handling tools, & clear floor. 14:00 - 19:00 5.00 DRILL LNR1 Pull wear ring & set test plug. Pressure test BOPE to 250 psi f/5 rain & 3500 psi f/10 min. All BOPE pressure test - OK. 19:00 - 00:00 5.00 DRILL LNR1 PJSM. R/U 4-1/2" Csg handling equipment & run 4-1/2" 12.5#, L-80, NSCT Csg w/float shoe, float collar, & latch collar to 1526'. Operation Inc @ report time. 3/20/2001 00:00 - 06:30 6.50 CASE PROD1 Finished run 139 jts 4-1/2" L-80 NSCT production liner with Baker liner hangedpacker & HR setting tool. 06:30 - 07:00 0.50 CASE PROD1 Circulate liner volume. 07:00 - 08:00 1.00 CASE PROD1 Clear floor of liner running tools. 08:00 - 13:00 5.00 CASE PROD1 RIH w/liner to casing shoe. 13:00 - 13:30 0.50 CASE PROD1 Circulate drill pipe volume. 13:30 - 16:00 2.50 CASE PROD1 Finish RIH w/liner. Tagged up on depth. 16:00 - 17:30 1.50 CASE PROD1 Circulate and condition mud. Reciprocated liner, 230K up, 150K down. 17:30 - 18:00 0.50 CASE PROD1 Held PJSM w/Peak, Dowell, rig personnel. 18:00 - 20:30 2.50 CASE PROD1 P/U cement head and circulate while batch mixing cement. Printed: 4/12/2001 10:29:13AM BP EXPLORATION Page9 of 10 Operations Summary Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG :Rig Name: NABORS 7ES Rig Number: N7ES Sub Date From-To Hours Task Code Phase Description of OperationS ...... 3/20/2001 20:30 - 22:30 2.00 CASE PROD1 Test lines to 5000 psi. Pmp 20 bbls preflush and 50 bbls Mud Push spacer at 10.0 ppg. Pmp 143 bbls class G cmt @ 15.8 ppg. Displaced with 130 bbls perf pill and 73 bbls seawater. Reciprocated while spacer and 20 bbls cmt at shoe, set liner on btm. Bumped plug at calc'd volume, had full returns during displacement. Floats held. CIP 2230 hrs 3/20/01. 22:30 - 23:00 0.50 CASE PROD1 Pressure to 4200 psi to release HR running tool. P/U to release dogs, set down 70K to set packer. Rotate on packer. Pressure to 500 psi, P/U 30' to clear packoff and circulate 150 spm to clear cmt from top of 3acker. 23:00 - 00:00 1.00 CASE . PROD1 Circulate out excess cmt at 200 spm. Displace well to seawater. 3/21/2001 00:00 - 01:30 1.50 CASE PROD1 Circ well to clean seawater. Obtained 10 bbls cmt in returns. 01:30 - 08:00 6.50 CASE PROD1 L/D cmt head. POH. L/D liner running tools. 08:00 - 09:00 1.00 CASE PROD1 Closed blind rams and tested casing to 3500 psi, OK. 09:00 - 10:30 1.50 CASE PROD1 Serviced top drive and grease torque tube. 10:30 - 12:00 1.50 CASE PROD1 P/U 2-7/8" Navidril assembly and 3.75" cmt mill. Load 2-3/8" HT SL90 drill pipe in pipe shed. 12:00 - 13:00 1.00 CASE PROD1 =RJU hyd tongs to M/U drill pipe. 13:00 - 18:30 5.50 CASE PROD1 Single in 2-3/8" drill pipe. 18:30 - 19:00 0.50 CASE PROD1 L/D hyd tongs. Clear floor. ~19:00 - 00:00 5.00 CASE PROD1 P/U jars, RIH on 4" drill pipe. Tagged possible TOL @ 12,024'. RIH to 12,436'. Took 5K wt, work pipe several times. Wash thru obstruction to 12,466'. 160K up, 115K down. 13/22/2001 00:00 - 04:00 4.00 CASE PROD1 RIH. Taking 5K, wash thru obstruction @ 12,436'-12,466'. RIH. Wash thru @ 13,785'. RIH to 14,472'. Set down 10K. Unable to circ. POH to 14,147'. Unable to move up or down. Drill string plugged. Rotate free, regain circ. 04:00 - 09:00 5.00 CASE PROD1 POH to above liner top @ 11,998'. Establish circulation, 3 BPM. 1730 psi. RIH. Attempted to break circ @ 12,466'. Drill string plugged. Work pipe, attempt to unplug drill string. POH to top of liner. 09:00 - 10:00 1.00 CASE PROD1 Dropped 3/4" ball and attempt to open circ sub on top of motor. No Go. 10:00 - 14:30 4.50 CASE PROD1 POH wet to 5430'. 14:30 - 17:00 2.50 CASE PROD1 Slip and cut line. Service top drive. 17:00 - 18:00 1.00 CASE PROD1 R/U hydraulic tongs, belly line to stand back 2-3/8" drill pipe. 18:00 - 23:00 5.00 CASE PROD1 POH, stand back 2-3/8" drill pipe. 23:00 - 00:00 1.00 CASE PROD1 L/D Navidril motor, mill. Completely plugged with cement. 3/23/2001 00:00 - 01:00 1.00 CASE PROD1 P/U motor and 3.70" cmt mill. 01:00 - 04:30 3.50 CASE PROD1 RIH stds 2-3/8" drill pipe. 04:30 - 09:30 5.00 CASE PROD1 RIH 4" drill pipe to 12,308'. TOL @ 12,032'. TQ at liner to 3500 fi-lb. 09:30 - 10:30 1.00 CASE PROD1 Washed f/12,308' - 12,655'. 170K up, 110K dn, 47 spm, 1300 psi. 10:30 - 13:30 3.00 CASE PROD1 RIH. 10K to 20K drag. Work thru, 46 spin, 1300 psi. Tagged landing collar 5' high @ 17,417'. 13:30 - 14:00 0.50 CASE PROD1 Drop 3/4" ball and pump to shear sub. Sheared sub. 14:00 - 17:30 3.50 CASE PROD1 CBU, 7 bpm. Spotted 130 bls perf pill in 4-1/2" liner. 17:30 - 20:30 3.00 CASE :PROD1 POH to top 4-1/2" liner. 20:30 - 00:00 3.50 CASE :PROD1 Displace hole to clean seawater. 5.5 bpm, 3590 psi. 3/24/2001 00:00 - 03:30 3.50 CASE PROD1 POH std back 4" drill pipe to 5467'. 03:30 - 08:30 5.00 CASE PROD1 L/D 2-3/8" drill pipe. 08:30 - 09:30 1.00 PERF COMP Service top drive. 09:30 - 10:30 1.00 PERF COMP Load perf guns in pipe shed. 10:30 - 11:00 0.50 PERF COMP Held safety meeting prior to P/U perf guns. 11:00 - 17:30 6.50 PERF COMP P/U 4893' of perf guns and spacers. Printed: 4/12/2001 10:29:13AM BP EXPLORATION Page 10 of 10 Operations Summary Report Legal Well Name: Y-20 Common Well Name: Y-20A Spud Date: 2/20/2001 Event Name: REENTER & COMPLETE Start: 2/20/2001 End: 3/30/2001 Contractor Name: NABORS Rig Release: 3/30/2001 Group: RIG Rig Name: NABORS 7ES Rig Number: N7ES Sub Phase Description of OperatiOns Date From-T° Hours Task Code ,3/24/2001 17:30 - 20:00 2.50 PERF COMP P/U 18 jts 2-7~8" Fox tbg. 20:00 - 00:00 4.00 PERF COMP RIH w/perf guns on 4" drill pipe to 12,084'. 160K up, 110K down 3/25/2001 00:00 - 03:00 3.00 PERF COMP RIH wi perf guns, tagged landing collar on depth @ 17,417'. 03:00 - 04:00 1.00 PERF COMP Closed hydril and pressured to 3000 psi. Guns fired. Perforated interval 17,410' - 12,538' with 2-1/2" and 2-3/4" guns 6 spf as per 10 page perf detail. 04:00 - 06:30 2.50 PERF COMP POH w/perf guns to above 4-1/2" liner top. Monitor hole, taking 12 bph seawater to perfs. 06:30 - 00:00 17.50 PERF COMP Troubleshoot excessive noise in drawworks. Bearings baldy worn, jack shaft 80/1000 out of round. Replace shaft and bearing assembly. All jobs performed with PJSM. 3/26/2001 00:00 - 00:00 24.00 PERF COMP Replace jack shaft and bearing assembly in drawworks. Loosing 10 bph to perfs, cumulative loss 435 bbls seawater. 3/27/2001 00:00 - 18:30 18.50 PERF DRAW COMP Cont. repairng Drwks shaft. Load test-okay. Average losses 10 bbl/hr. 18:30 - 00:00 5.50 PERF COMP TOH, L/D DP, Lost 246 bbls in last 24 hrs, Cum. losses 676 bbls. 3/28/2001 00:00 - 01:30 1.50 PERF COMP Finish LD DP, tbg to 5,019'. Held PJSM for puling perf gns. 01:30 - 16:30 15.00 PERF COMP LD 2-3/4" and 2-1/2" perf guns - all shots fired. 16:30 - 17:30 1.00 PERF COMP Cut and slip drill line, service rig. 17:30 - 23:00 5.50 PERF COMP Lay down 4" drill pipe and pull the wear ring. 23:00 - 00:00 1.00 RUNCO~ COMP RU tbg running equipment, held PJSM. Lost 181 bbls in 24 hrs, 857 bbls cummulative total losses. 3/29/2001 00:00 - 01:30 1.50 RUNCO~ COMP Held PJSM and RU tbg running equipment. 01:30 - 06:30 5.00 RUNCO~ COMP Run CMPL Assembly, 4-1/2", 13 CR80, NSCT tbg, with 4000 ft-lb MU torque. Inspected GLM. 06:30 - 07:00 0.50 RUNCO~ COMP Serviced Top Drive and adjusted hydraulic brakes. 07:00 - 20:00 13.00 RUNCOr COMP Cont. run 4-1/2", 13 CR80, NSCT tbg, with 4000 fi-lb MU torque. 20:00 - 22:00 2.00 RUNCO~ COMP Space out and land tbg. Tail at 12,036' 22:00 - 00:00 2.00 RUNCOk COMP RU to pump, and reverse cir¢ at 3 BPM and 150 psi. Fluid losses 2-4 bbl/hr, cummulative = 901 bbls. 3/30/2001 00:00 - 03:30 3.50 RUNCOk COMP Cont. Rev. Circulate Brine + inhib. @ 3 BPM 03:30 - 05:30 2.00 RUNCOIt COMP Held PJSM, drop ball and rod. Pressure up on tbg to 3500 psi and set pkr at 11985'. Bleed tbg pressure to 1500 psi, pressure up annulus to 3500 and test pkr for 30 min, okay. Bleed off tbg pressure and shear RP. 05:30 - 06:00 0.50 RUNCOIt COMP Lay down landing jt, set TWC and test to 2500 psi - okay. 06:00 - 09:30 3.50 RUNCOIt COMP Blow down test pressure, held PJSM, ND BOPE. 09:30 - 14:30 5.00 RUNCOIt COMP NU adaptor flange and tree, test adaptor flange to 5000# for 10 min - okay. Fill tree with diesel and test to 5000# - okay. 14:30 - 15:30 1.00 RUNCOIt COMP RU lubricator and pull TVVC. 15:30 - 19:30 4.00 RUNCOIt COMP RU Hot Oil service, pump 160 bbls of diesel freeze protector, allow to U-tube. 19:30 - 20:30 1.00 RUNCOIt COMP Set BPV and test to 2500# - okay, blow down lines. 20:30 - 22:00 1.50 RUNCOIt COMP Clean pits, remove secondary Annular valve and secure cellar. RIG RELEASE: 10 PM 3/30/2001 Printed: 4/12/2001 10:29:13AM 10-Apr-01 AOGCC 333 W. 7th Ave. Suite 100 Anchorage, AK 99501 Definitive Survey Re: Distribution of Survey Data for Well Y-20A Dear Dear SidMadam: Enclosed are two survey hard copies and 1 disk RECEIVED API 12. 2001 Tie-on Survey: 11,433.07' MD Window / Kickoff Survey: 11,449.00' MD Projected Survey: 17,514.00' MD (if applicable Please call me at 273-3545 if you have any questions or concerns. Regards, William T. Allen Survey Manager Attachment(s) DEFINITIVE North Slope Alaska Alaska Drilling & Wells PBU_WOA Y Pad, Slot Y-20 Y-20A Job No. AKZZlO079, Surveyed: ~8 March, 200~ SURVEY REPORT April, Your Ref: AP!500292~ 5870~ Surface Coordinates: 5948809.00 N, 644470.00 E (7¢ ~6' 03.~8~0" N, Kelly Bushing: 78.25ft above Mean Sea Level ~48° 49' 54.3057" W) RECEIVED r¥1A¥ ~1 E~ 2001 /:~,laska Oil & Ga.s Cons, Commission Anchorage DRILLING SERVICES A Halliburton Company Survey Ref: svy10782 Sperry-Sun Drilling Services Survey Report for Y-20A Your Ref: APi500292158701 Job No. AKZZlO079, Surveyed: '18 March; 200'1 DEFiNiTiVE North Slope Alaska Measured Depth (ft) Incl. Azim. Sub-Sea Depth (fi) Vertical Depth (ft) 11433.07 53.520 235.040 8375.36 8453.61 11449.00 53.560 235.130 8384.82 8463.07 11487.31 55.590 237.670 8407.03 8485.28 11526.80 56.180 240.270 8429.18 8507.43 11557.57 55.990 242.280 8446.35 8524.60 11586.53 55.960 244.160 8462.56 8540.81 11617.10 55.730 246.130 8479.72 8557.97 11647.55 55.570 247.980 8496.90 8575.15 11679.75 55.230 248.530 8515.19 8593.44 11710.88 55.070 248.710 8532.98 8611.23 11773.30 55.220 249.080 8568.65 8646.90 11807.67 57.220 245.740 8587.76 8666.01 11838.68 57.870 246.180 8604.40 8682.65 11867.21 57.730 246.630 8619.61 8697.86 11960.87 56.880 245.490 8670.20 8748.45 12052.99 55.600 249.520 8721.41 8799.66 12147.02 54.090 250.900 8775.55 8853.80 12237.57 53.970 252.010 8828.73 8906.98 12266.80 54.860 249.110 8845.75 8924.00 12296.42 57.360 246.890 8862.26 8940.51 12331.72 60.820 242.930 8880.40 8958.65 12361.99 62.190 240.010 8894.84 8973.09 12396.34 64.690 239.040 8910.20 8988.45 12427.50 66.580 234.840 8923.06 9001.31 12456.46 69.100 234.410 8933.98 9012.23 12486.57 71.340 231.000 8944.17 9022.42 12520.58 74.430 228.010 8954.18 9032.43 12548.88 76.210 226.360 8961.35 9039.60 12583.07 78.920 225.060 8968.72 9046.97 12613.36 81.660 222.490 8973.83 9052.08 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 5042.71S 5185.58W 5943667.70 N 639382.16 E 5050.04 S 5196.08W 5943660.17 N 639371.79 E 5067.31S 5222.08W 5943642.41 N 639346.13 E 5084.16 S 5250.10W 5943625.02 N 639318.44E 5096.43 S 5272.49W 5943612.32 N 639296.29 E 5107.24 S 5293.91W 5943601.10 N 639275.08 E 5117.87 S 5316.87W 5943590.03 N 639252.33 E 5127.67 S 5340.01W -5943579.79 N 639229.38 E 5137.49 S 5364.63W 5943569.50 N 639204.95 E 5146.81S 5388.42W 5943559.73 N 639181.35 E 5165.25 S 5436.21W 5943540.37 N 639133.92 E 5176.23 S 5462.57W 5943528.89 N 639107.77 E 5186.89 S 5486.47W 5943517.77 N 639084.09 E 5196.55 S 5508.59W 5943507.69 N 639062.15 E 5228.53 S 5580.63W 5943474.33 N 638990.74E 5257.84 S 5651.36W 5943443.67 N 638920.59 E 5283.88 S 5723.69W 5943416.25 N 638848.77E 5307.19 S 5793.16W 5943391.61 N 638779.76 E 5315..10 S 5815.58W 5943383.27 N 638757.50 E 5324.31S '5838.37W 5943373.62 N 638734.89 E 5337.17 S 5865.77W 5943360.24N 638707.74E 5349.88 S 5889.14W 5943347.09 N 638684.62 E 5365.46 S 5915.62W 5943331.00 N 638658.44E 5380.94 S 5939.39W 5943315.06 N 638634.97 E 5396.47 S 5961.26W 5943299.12 N 638613.40 E 5413.64 S 5983.79W 5943281.52 N 638591.21E 5434.75 S 6008.50W 5943259.94 N 638566.91E 5453.35 S 6028.58W 5943240.95 N 638547.19 E 5476.67 S 6052.47W 5943217:19 N 638523.75 E 5498.22 S 6073.12W 5943195.24 N 638503.52 E Dogleg Rate (°/100ft) 0.52 7.57 5.65 5.46 5.38 5.39 5.04 1.76 0.70 0.54 9.95 2.41 1.42 1.37 3.89 2.00 1.00 8.62 10.48 13.73 9.61 7.70 13.69 8.81 13.00 12.37 8.45 8.75 12.32 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 2206.31 2208.20 2212.08 2214.70 2215.72 2215.86 2215.16 2213.63 2211.46 2209.21 2204.44 2202.54 2201.44 2200.24 2196.80 2191.55 2182.66 2172.59 2169.70 2167.80 2167.11 2168.08 2170.25 2173.53 2177.69 2183.03 2190.93 2198.65 2208.89 2218.99 Tie On Point AK-6 BP_IFR-AK Window Point April, 2001 - 17:05 Page 2 of 7 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A Your Ref: AP!50029215870'1 Job No. AKZZ'iO079, Surveyed: 'i8 March, 200'i North Slope Alaska Measured Depth (ft) Incl. 12640.83 83.520 220.620 12676.55 86.860 218.290 12707.38 90.310 217.040 12733.99 91.420 215.860 12770.35 92.580 211.540 12800.73 93.010 209.970 12827.64 92.770 208.170 12864.26 90.990 207.240 12890.96 90.060 205.190 12923.43 90.000 204.530 12957.84 89.570 202.400 12988.06 90.060 201.220 13016.91 90.310 199.610 13050.05 92.400 197.270 13081.04 93.010 196.090 Sub-Sea Depth (ft) 8977.37 8980.36 8981.12 8980.72 8979.45 8977.97 8976.62 8975.41 8975.17 8975.15 8975.28 8975.38 8975.29 8974.5O 8973.04 Vertical Depth (ft) 9055.62 9058.61 9059.37 9058.97 9057.70 9056.22 9054.87 9053.66 9053.42 9053.40 9053.53 9053.63 9053.54 9052.75 9051.29 13107.08 94.120 195.340 8971.42 9049.67 13140.54 94.870 192.420 8968.80 9047.05 13174.55 93.570 187.470 8966.29 9044.54 13202.55 93.390 185.390 8964.59 9042.84 13231.75 93.260 184.490 8962.90 9041.15 13267.29 92.710 181.320 8961.05 9039.30 13294.13 92.710 180.630 8959.78 9038.03 13330.34 90.920 176.420 8958.63 9036.88 13361.23 89.140 173.100 8958.62 9036.87 13390.50 89.080 172.310 8959.07 9037.32 13486.37 89.450 171.720 8960.30 9038.55 13576.84 89.140 170.240 8961.41 9039.66 13611.11 89.450 170.020 8961.84 9040.09 13641.14 89.690 169.670 8962.06 9040.31 13665.96 90.620 170.490 8961.99 9040.24 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 5518.60 S 6091.19W 5943174.51 N 638485.84E 5546.08 S 6113.80W 5943146.60 N 638463.76 E 5570.48 S 6132.63W 5943121.85 N 638445.40 E 5591.88 S 6148.44W 5943100.15 N 638430.01 E 5622.10 S 6168.60W 5943069.55 N 638410.44E 5648.18 S 6184.11W 5943043.18 N 638395.42 E 5671.67 S 6197.17W 5943019.44 N 638382.82 E 5704.07 S 6214.19W 5942986.72 N 638366.43 E 5728.02 S 6225.98W 5942962.55 N 638355.10 E 5757.48 S 6239.63W 5942932.83 N 638342.02 E 5789.04 S 6253.33W 5942901.01 N 638328.92 E 5817.10 S 6264.56W 5942872.74 N 638318.24E 5844.14 S 6274.62W 5942845.52 N 638308.69 E 5875.56 S 6285.10W 5942813.90 N 638298.82 E 5905.21 S 6293.98W 5942784.08 N 638290.51 E 5930.23 S 6301.02W 5942758.93 N 638283.95 E 5962.61S 6309.02W 5942726.41N 638276.57 E 5996.01S 6314.88W 5942692.90 N 638271.36 E 6023.78 S 6318.01W 5942665.08 N 638268.76E 6052.82 S 6320.52W 5942635.99 N 638266.81E 6088.26 S 6322.32W 5942600.52 N 638265.69 E 6115.07 S 6322.77W 5942573.71N 638265.75 E 6151.24 S 6321.84W 5942537.57 N 638267.37 E 6181.99 S 6319.02W 5942506.87 N 638270.79 E 6211.02 S 6315.30W 5942477.92 N 638275.06 E 6305.96 S 6301.99W 5942383.26 N 638290.19 E 6395.30 S 6287.81W 5942294.21N 638306.09 E 6429.06 S 6281.93W 5942260.57 N 638312.61E 6458.62 S 6276.64W 5942231.11 N 638318.47 E 6483.06 S 6272.36W 5942206.75 N 638323.21 E Dogleg Rate (°/'~OOft) 9.56 11.39 11.90 6.09 12.29 5.35 6.74 5.48 8.43 2.04 6.31 4.23 5.65 9.47 4.28 5.14 8.98 15.01 7.44 3.11 9.04 2.57 12.63 12.19 2.71 0.73 1.67 1.11 1.41 5.00 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 2229.20 2243.74 2257.19 2269.32 2287.40 2303.84 2319.06 2340.50 2356.69 2377.00 2399.16 2419.28 2439.01 2462.48 2485.07 2504.34 2529.77 2557.07 2580.54 2605.43 2636.36 2660.16 2692.96 2721.76 2749.40 2840.33 2926.65 2959.49 2988.31 3012.11 April, 2001 - 17:05 Page 3 of 7 DriliQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A Your Ref: APi500292158701 Job No, AKZZIO079, Surveyed: ~8 March, 200~ North Slope Alaska Measured Depth (ft) Sub-Sea Depth (ft) Vertical Local Coordinates Depth Northings Eastings Northings (ft) (ft) (ft) (ft) 13704.46 94.740 172.020 8960.19 9038.44 13734.86 96.720 172.130 8957.16 9035.41 13759.49 97.030 171.400 8954.21 9032.46 13797.21 97.280 170.780 8949.51 9027.76 13828.20 95.920 173.090 8945.95 9024.20 13855.36 94.310 175.250 8943.53 9021.78 13876.00 92.710 177.230 8942.26 9020.51 13919.00 91.350 178.940 8940.74 9018.99 13947.21 90.860 180.520 8940.20 9018.45 14041.66 96.530 186.920 8934.11 9012.36 14075.44 96.780 186.300 8930.19 9008.44 14105.92 96.960 186.560 8926.55 9004.80 14134.34 96.480 188.380 8923.22 9001.47 14168.89 95.170 190.610 8919.71 8997.96 14200.00 93.880 191.740 8917.26 8995.51 14225.88 93.940 192.800 8915.49 8993.74 14321.25 93.450 192.550 8909.35 8987.60 14413.74 93.020 193.650 8904.13 8982.38 14445.91 93.630 194.840 8902.26 8980.51 14480.54 93.820 193.910 8900.01 8978.26 14506.63 95.110 193.670 8897.98 8976.23 14603.20 93.200 189.510 8890.98 8969.23 14697.02 85.010 183.680 8892.45 8970.70 14774.74 84.330 181.820 8899.67 8977.92 14824.05 83.030 177.960 8905.10 8983.35 14854.40 82.900 177.380 8908.81 8987.06 14880.97 82.970 175.740 8912.08 8990.33 14916.38 82.910 172.490 8916.44 8994.69 14947.06 82.910 171.900 8920.22 8998.47 14972.88 83.340 170.350 8923.31 9001.56 Global Coordinates Eastings (ft) 6521.07 S 6266.52W 5942168.87 N 638329.79 E 6551.02 S 6262.35W 5942139.00 N 638334.53 E 6575.22 S 6258.84W 5942114.87 N 638338.50 E 6612.20 S 6253.05W 5942078.01 N 638345.00 E 6642.68 S 6248.73W 5942047.62 N 638349.91 E 6669.59 S 6245.98W 5942020.77 N 638353.17 E 6690.14 S 6244.63W 5942000.25 N 638354.91 E 6733.09 S 6243.20W 5941957.34 N 638357.17 E 6761.29 S 6243.06W 5941929.14 N 638357.85 E 6855.26 S 6249.16W 5941835.07 N 638353.56 E 6888.59 S 6253.02W 5941801.67 N 638350.34E 6918.66 S 6256.41W 5941771.54 N 638347.53 E 6946.64 S 6260.08W 5941743.50 N 638344.39 E 6980.54 S 6265.75W 5941709.49 N 638339.38 E 7010.96 S 6271.76W 5941678.96 N 638333.95 E 7036.19 S 6277.24W 5941653.63 N 638328.95 E 7129.05 S 6298.13W 5941560.40 N 638309.85 E 7218.98 S 6319.06W 5941470.07 N 638290.65 E 7250.11S 6326.96W 5941438.80 N 638283.35 E 7283.59 S 6335.54W 5941405.17 N 638275.41E 7308.85 S 6341.74W 5941379.79 N 638269.70 E 7403.18 S 6361.08W 5941285.11 N 638252.17 E 7496.24 S 6371.84W 5941191.85 N 638243.19 E 7573.53 S 6375.56W 5941114.50 N 638240.97 E 7622.53 S 6375.47W 5941065.52 N 638242.00 E 7652.63 S 6374.24W 5941035.45 N 638243.80 E 7678.95 S 6372.66W 5941009.16 N 638245.89 E 7713.90 S 6369.06W 5940974.29 N 638250.16 E 7744.06 S 6364.92W 5940944.21 N 638254.87 E 7769.39 S 6360.97W 5940918.96 N 638259.31E Dogleg Rate (°/~OOff) 11.41 6.52 3.20 1.76 8.61 9.89 12.32 5.08 5.86 9.04 1.97 1.03 6.58 7.46 5.50 4.09 0.58 1.28 4.15 2.74 5.03 4.73 10.71 2.54 8.21 1.94 6.13 9.11 1.91 6.19 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 3O48.74 3077.42 3100.65 3136.34 3165.55 3190.87 3209.87 3248.97 3274.28 3355.71 3383.83 3409.25 3432.67 3460.50 3485.06 3505.21 3579.05 3650.26 3674.61 3700.77 3720.63 3796.47 3875.01 3942.57 3986.48 4013.98 4O38.25 4071.15 4100.00 4124.43 April, 2001.17:05 Page 4 of 7 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A Your Ref: AP!500292158701 Job No. AKZZfO079, Surveyed: f8 March, 200f North Slope Alaska Measured Depth (ft) Sub-Sea Depth (ft) Vertical Depth (ft) 15005.06 84.150 166.790 8926.82 9005.07 15040.06 84.520 166.320 8930.28 9008.53 15068.26 84.700 165.470 8932.92 9011.17 15104.26 84.200 164.090 8936.41 9014.66 15134.96 83.830 161.710 8939.61 9017.86 15163.66 83.840 159.860 8942.69 9020.94 15197.83 82.840 156.400 8946.65 9024.90 15228.10 82.290 154.400 8950.57 9028.82 15257.36 82.090 151.350 8954.55 9032.80 15290.72 82.850 148.480 8958.92 9037.17 15319.95 '83.030 144.610 8962.52 9040.77 15346.46 83.340 142.680 8965.66 9043.91 15383.13 84.890 139.790 8969.42 9047.67 15413.00 86.060 136.520 8971.78 9050.03 15440.27 86.310 134.000 8973.59 9051.84 15475.91 86.920 129.080 8975.70 9053.95 15506.78 86.610 125.880 8977.44 9055.69 15532.34 87.600 124.330 8978.73 9056.98 15572.27 89.320 121.180 8979.81 9058.06 15601.15 89.750 120.960 8980.04 9058.29 15630.53 92.150 120.840 8979.55 9057.80 15662.88 93.080 119.530 8978.08 9056.33 15695.68 93.070 116.780 8976.32 9054.57 15724.54 93.630 114.770 8974.63 9052.88 15758.25 93.390 113.300 8972.57 9050.82 15788.98 93.880 112.530 8970.62 9048.87 15816.54 94.500 110.770 8968.61 9046.86 15851.15 94.620 108.820 8965.85 9044.10 15881.92 94.440 108.370 8963.42 9041.67 15911.48 94.680 106.860 8961.07 9039.32 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 7800.74 S 6354.63W 5940887.74 N 638266.25 E 7834.61S 6346.53W 5940854.03 N 638275.00 E 7861.84 S 6339.69W 5940826.94 N 638282.36 E 7896.42 S 6330.28W 5940792.55 N 638292.43 E 7925.60 S 6321.30W 5940763.55 N 638301.96 E 7952.54 S 6311.91W 5940736.79 N 638311.87 E 7984.03 S 6299.27W 5940705.55 N 638325.11E 8011.32 S 6286.78W 5940678.50 N 638338.13 E 8037.12 S 6273.57W 5940652.96 N 638351.84E 8065.73 S 6256.99W 5940624.67 N 638368.96 E 8089.93 S 6241.00W 5940600.79 N 638385.41 E 8111.13 S 6225.40W 5940579.89 N 638401.42 E 8139.56 S 6202.56W 5940551.90 N 638424.79 E 8161.74 S 6182.70W 5940530.10 N 638445.08 E 8181.07 S 6163.55W 5940511.15 N 638464.60 E 8204.65 S 6136.92W 5940488.08 N 638491.67 E 8223.41S 6112.47W 5940469.80 N 638516.48 E 8238.08 S 6091.59W 5940455.53 N 638537.64E 8259.68 S 6058.02W 5940434.58 N 638571.61 E 8274.58 S 6033.29W 5940420.15 N 638596.63 E 8289.67 S 6008.08W 5940405.56 N 638622.12 E 8305.91S 5980.15W 5940389.85 N 638650.36 E 8321.37 S 5951.27W 5940374.95 N 638679.52 E 8333.89 S 5925.33W 5940362.92 N 638705.70 E 8347.60 S 5894.60W 5940349.81 N 638736.69 E 8359.54 S 5866.36W 5940338.42 N 638765.16 E 8369.68 S 5840.81W 5940328.77 N 638790.89 E 8381.36 S 5808.35W 5940317.71 N 638823.57 E 8391.14 S 5779.28W 5940308.49 N 638852.83 E 8400.06 S 5751.19W 5940300.11 N 638881.08 E Dogleg Rate (°/'~OOft) 11.28 1.70 3.07 4.06 7.80 6.41 10.47 6.80 10.35 8.83 13.15 7.32 8.91 11.59 9.27 13.89 10.40 7.19 8.99 1.67 8.18 4.96 8.37 7.22 4.41 2.97 6.75 5.63 1.57 5.16 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 4155.33 4189.26 4216.69 4251.84 4281.96 4310.27 4344.09 4374.09 4403.07 4436.08 4464.86 4490.79 4526.42 4555.12 4580.95 4613.93 4641.61 4664.05 4698.33 4722.69 4747.41 4774.40 4801.09 4823.86 4849.82 4873.09 4893.54 4918.45 4940.16 4960.65 April, 2001 - ~7:05 Page 5 of 7 DdllQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A Yo ur Ref: AP!500292'i 58 70'1 Job No. AKZZ'I O079, Surveyed: 18 March, 2001 North Slope Alaska Measured Sub-Sea Vertical Depth Incl. Azim. Depth Depth (ft) (ft) (ft) Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 15946.10 94.620 106.290 8958.27 9036.52 8409.90 S 5718.12 W 5940290.90 N 638914.33 E 16006.18 95.170 105.570 8953.14 9031.39 8426.33 S 5660.56 W 5940275.58 N 638972.20 E 16097.77 95.800 104.650 8944.38 9022.63 8450.10 S 5572.54 W 5940253.51 N 639060.66 E 16133.98 95.790 105.900 8940.73 9018.98 8459.59 S 5537.79 W 5940244.69 N 639095.58 E 16164.90 95.980 105.750 8937.56 9015.81 8467.98 S 5508.20 W 5940236.87 N 639125.33 E 16191.40 95.800 107.500 8934.84 9013.09 8475.52 S 5482.94 W 5940229.82 N 639150.73 E 16286.22 92.520 110.650 8927.96 9006.21 8506.42 S 5393.59 W 5940200.63 N 639240.66 E 16379.19 92.590 110.110 8923.81 9002.06 8538.77 S 5306.53 W 5940169.97 N 639328.32 E 16473.23 93.020 110.450 8919.21 8997.46 8571.32 S 5218.42 W 5940139.11 N 639417.04 E 16564.99 92.030 110.440 8915.17 8993.42 8603.34 S 5132.53 W 5940108.74 N 639503.53 E 16658.94 90.680 110.340 8912.95 8991.20 8636.07 S 5044.49 W 5940077.71 N 639592.18 E 16753.48 88.030 109.750 8914.01 8992.26 8668.47 S 4955.69 W 5940047.02 N 639681.58 E 16847.27 83.900 105.420 8920.61 8998.86 8696.73 S 4866.55 W 5940020.48 N 639771.25 E 16925.89 82.230 102.720 8930.11 9008.36 8715.70 S 4790.86 W 5940002.96 N 639847.29 E 16972.69 83.040 103.930 8936.11 9014.36 8726.40 S 4745.69 W 5939993.13 N 639892.65 E 17026.39 82.910 104.120 8942.68 9020.93 8739.31 S 4693.98 W 5939981.21 N 639944.60 E 17129.15 84.270 102.800 8954.15 9032.40 8763.08 S 4594.68 W 5939959.35 N 640044.35 E 17222.56 84.580 103.060 8963.22 9041.47 8783.88 S 4504.07 W 5939940.29 N 640135.34 E 17315.61 84.700 103.020 8971.92 9050.17 8804.79 S 4413.81 W 5939921.13 N 640225.98 E 17409.69 84.770 102.630 8980.55 9058.80 8825.58 S 4322.47 W 5939902.09 N 640317.71 E 17439.53 84.270 102.600 8983.40 9061.65 8832.07 S 4293.48 W 5939896.16 N 640346.81 E 17514.00 84.270 102.600 8990.83 9069.08 8848.23 S 4221.17 W 5939881.39 N 640419.42 E All data is in Feet unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are relative to Well Reference. Northings and Eastings are relative to Well Reference. Magnetic Declination at Surface is 26.646° (25-Feb-01) The Dogleg Severity is in Degrees per 100 feet. Vertical Section is from Well Reference and calculated along an Azimuth of 153.560° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 17514.00ft., Dogleg Rate (°/100ft) 1.65 1.50 1.21 3.43 0.78 6.60 4.79 0.59 0.58 1.08 1.44 2.87 6.37 4.02 3.09 0.43 1.84 0.43 0.14 0.42 1.68 0.00 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 4984.19 5O24.53 5085.00 5108.97 5129.65 5147.65 5215.11 5282.83 5351.21 5418.13 5486.63 5555.18 5620.18 5670.87 5700.56 5735.15 5800.65 5859.62 5918.52 5977.81 5996.53 6043.20 Projected Survey April, 2001 - 17:05 Page 6 of 7 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A Your Ref: APi500292158701 Job No. AKZZfO079, Surveyed: f8 March, 200f North Slope Alaska The Bottom Hole Displacement is 9803.54ft., in the Direction of 205.504° (True). Alaska Drilling & Wells PBU WOA Y Pad Comments Measured Station Coordinates Depth TVD Northings Eastings (ft) (ft) (ft) (ft) 11433.07 8453.61 5042.71 S 5185.58 W 11449.00 8463.07 5050.04 S 5196.08 W 17514.00 9069.08 8848.23 S 4221.17 W Comment Tie On Point Window Point Projected Survey Survey tool program for Y-20A From To Measured Vertical Measured Vertical Depth Depth Depth Depth. (ft) (ft) (fi) (ft) 0.00 0.00 11433.07 8453.61 11433.07 8453.61 17514.00 9069.08 Survey Tool Description AK-1 BP_HG (Y-20) AK-6 BP_IFR-AK (Y-20A) ~10 April, 2001 - f7:05 Page 7 of 7 DriilQuest 2.00.08.005 North Slope Alaska Alaska Drilling & Wells PBU_WOA Y Pad, Slot Y-20 Y-20A MWD Job No. AKMMfO057, Surveyed: 18 March, 2001 SURVEY REPORT April, Your Ref: AP1 500292158701 Surface Coordinates: 5948809.00 N, 644470.00 E (70° 16' 03.1810" N, 148° 49' 54.3057" Kelly Bushing: 78.25ft above Mean Sea Level RECEIVED tv~/~.Y ~i 8 2001 Oil & Gas Cor~s. Oomrl~ission A~chorago DRILLING SERVICES; A Halliburton Company Survey Ref: svy10783 Sperry-Sun Drilling Services Survey Report for Y-20A MWD Your Ref: AP! 500292158701 Job No. AKMMlO057, Surveyed: 18 March, 200~ North Slope Alaska Measured Depth (ft) Incl. Sub-Sea Depth (ft) Vertical Local Coordinates Global Coordinates Depth Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) (ft) 11433.07 53.520 235.040 8375.36 8453.61 11449.00 53.560 235.130 8384.82 8463.07 11487.31 55.590 237.670 8407.03 8485.28 11526.80 56.180 240.270 8429.18 8507.43 11557.57 55.990 242.280 8446.35 8524.60 11586.53 55.960 244.160 11617.10 55.730 245.120 11647.55 55.570 248.070 11679.75 55.230 248.680 11710.88 55.070 249.080 11773.30 55.220 249.440 11807.67 57.220 245.950 11838.68 57.870 246.420 11867.21 57.730 246.840 11960.87 56.880 245.820 8462.56 8479.72 8496.90 8515.19 8532.98 8568.65 8587.76 8604.41 8619.61 8670.20 8721.41 8775.55 8828.74 8845.75 8862.26 12052.99 55.600 249.920 12147.02 54.090 251.310 12237.57 53.970 252.260 12266.80 54.860 249.490 12296.42 57.360 247.150 8540.81 8557.97 8575.15 8593.44 8611.23 8646.90 8666.01 8682.66 8697.86 8748.45 8799.66 8853.8O 8906.99 8924.00 8940.51 12331.72 60.820 243.150 8880.40 8958.65 12361.99 62.190 240.230 8894.84 8973.09 12396.34 64.690 239.260 8910.20 8988.45 12427.50 66.580 235.060 8923.06 9001.31 12456.46 69.100 234.650 8933.98 9012.23 12486.57 71.340 231.370 8944.17 9022.42 12520.58 74.430 228.250 8954.18 9032.43 12548.88 76.210 226.600 8961.36 9039.61 12583.07 78.920 225.290 8968.72 9046.97 12613.36 81.660 222.750 8973.83 9052.08 5042.71 S 5185.58W 5943667.70 N 639382.16 E 5050.04 S 5196.08W 5943660.17 N 639371.79 E 5067.31S 5222.08W 5943642.41N 639346.13 E 5084.16 S 5250.10W 5943625.02 N 639318.44 E 5096.43 S 5272.49W 5943612.32 N 639296.29 E 5107.24 S 5293.91W 5943601.10 N 639275.08 E 5118.08 S 5316.77W 5943589.83 N 639252.43 E 5128.06 S 5339.84W 5943579.40 N 639229.56 E 5137.83 S 5364.48W 5943569.16 N 639205.11 E 5147.03 S 5388.31W 5943559.50 N 639181.46 E 5165.17 S 5436.21W 5943540.45 N 639133.92 E 5176.02 S 5462.63W 5943529.10 N 639107.71E 5186.59 S 5486.57W 5943518.07 N 639083.98 E 5196.16 S 5508.73W 5943508.07 N 639062.01E 5227.80 S 5580.92W 5943475.05 N 638990.44E 5256.66 S 5651.83W 5943444.84 N 638920.10 E 5282.19 S 5724.34W 5943417.93 N 638848.09 E 5305.09 S 5793.95W 5943393.69 N 638778.93 E 5312.88 S 5816.41W 5943385.47 N 638756.63 E 5321.97 S 5839.25W 5943375.94 N 638733.97 E 5334.71S 5866.71W 5943362.68 N 638706.75 E 5347.33 S 5890.12W 5943349.62 N 638683.59 E 5362.81S 5916.66W 5943333.63 N 638657.35 E 5378.20 S 5940.50W 5943317.78 N 638633.81E 5393.64 S 5962.42W 5943301.92 N 638612.19 E 5410.69 S 5985.05W 5943284.44 N 638589.90 E 5431.67 S 6009.87W 5943262.99 N 638565.48 E 5450.19 S 6030.02W 5943244.09 N 638545.69 E 5473.40 S 6054.01W 5943220.42 N 638522.14 E 5494.87 S 6074.75W 5943198.56 N 638501.82 E Dogleg Rate (°/~OOft) 0.52 7.57 5.65 5.46 5.38 2.71 8.02 1.88 1.17 0.53 10.25 2.46 1.34 1.29 3.95 2.01 0.86 8.29 10.69 13.80 9.61 7.70 13.69 8.80 12.66 12.63 8.45 8.76 12.25 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 2206.31 2208.20 2212.08 2214.70 2215.72 2215.86 2215.38 2214.05 2211.83 2209.46 2204.37 2202.32 2201.12 2199.83 2196.02 2190.29 2180.85 2170.37 2167.35 2165.31 2164.49 2165.36 2167.41 2170.58 2174.64 2179.83 2187.57 2195.17 2205.28 2215.27 Tie On Point MWD Magnetic Window Point 10 April, 2001 - 17:04 Page 2 of 7 DriilQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A MWD Your Ref: AP1 500292158701 Job No. AKMMt O057, Surveyed: ~ 8 March, 200f North Slope Alaska Measured Depth (ft) Azim. Sub-Sea Depth (ft) Vertical Depth (ft) 12640.83 83.520 220.930 8977.37 9055.62 12676.55 86.860 218.300 8980.36 9058.61 12707.38 90.310 216.970 8981.13 9059.38 12733.99 91.420 215.910 8980.72 9058.97 12770.35 92.580 211.070 8979.45 9057.70 12800.73 93.010 210.170 8977.97 9056.22 12827.64 92.770 208.300 8976.62 9054.87 12864.26 90.990 207.450 8975.41 9053.66 12890.96 90.060 205.410 8975.17 9053.42 12923.43 90.000 204.860 8975.15 9053.40 12957.84 89.570 202.750 8975.28 9053.53 12988.06 90.060 201.520 8975.38 9053.63 13016.91 90.310 199.910 8975.29 9053.54 13050.05 92.400 197.350 8974.50 9052.75 13081.04 93.010 196.170 8973.04 9051.29 13107.08 94.120 195.430 8971.42 9049.67 13140.54 94.870 192.460 8968.80 9047.05 13174.55 93.570 187.510 8966.29 9044.54 13202.55 93.390 185.480 8964.59 9042.84 13231.75 93.260 184.560 8962.90 9041.15 13267.29 92.710 181.420 8961.05 9039.30 13294.13 92.710 180.760 8959.78 9038.03 13330.34 90.920 176.760 8958.63 9036.88 13361.23 89.140 173.470 8958.62 9036.87 13390.50 89.080 172.710 8959.07 9037.32 13486.37 89.450 172.220 8960.30 9038.55 13576.84 89.140 170.800 8961.41 9039.66 13611.11 89.450 170.480 8961.84 9040.09 13641.14 89.690 169.780 8962.06 9040.31 13665.96 90.620 170.930 8961.99 9040.24 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 5515.16 S 6092.92W 5943177.92 N 638484.04 E 5542.58 S 6115.61W 5943150.07 N 638461.88 E 5566.98 S 6134.43W 5943125.31N 638443.54 E 5588.39 S 6150.23W 5943103.61N 638428.15 E 5618.68 S 6170.28W 5943072.94 N 638408.69 E 5644.79 S 6185.73W 5943046.53 N 638393.74 E 5668.24 S 6198.86W 5943022.83 N 638381.07 E 5700.60 S 6215.97W 5942990.16 N 638364.58 E 5724.50 S 6227.85W 5942966.03 N 638353.16 E 5753.90 S 6241.64W 5942936.37 N 638339.93 E 5785.38 S 6255.53W 5942904.63 N 638326.65 E 5813.37 S 6266.92W 5942876.43 N 638315.80 E 5840.36 S 6277.12W 5942849.25 N 638306.12 E 5871.75 S 6287.71W 5942817.66 N 638296.14 E 5901.39 S 6296.63W 5942787.86 N 638287.79 E 5926.39 S 6303.71W 5942762.72 N 638281.19 E 5958.76 S 6311.75W 5942730.20 N 638273.77 E 5992.16 S 6317.62W 5942696.70 N 638268.54E 6019.92 S 6320.79W 5942668.88 N 638265.91 E 6048.96 S 6323.34W 5942639.80 N 638263.92 E 6084.40 S 6325.19W 5942604.33 N 638262,75 E 6111.21S 6325.70W 5942577.52 N 638262.75 E 6147.38 S 6324.91W 5942541.37 N 638264.23 E 6178.15 S 6322.28W 5942510.65 N 638267.45 E 6207.21S 6318.76W 5942481.67 N 638271.53 E 6302.24 S 6306.19W 5942386.90 N 638285.92 E 6391.71S 6292.84W 5942297.70 N 638300.99 E 6425.52 S 6287.26W 5942264.00 N 638307.21E 6455.10 S 6282.12W 5942234.52 N 638312.92 E 6479.57 S 6277.96W 5942210.14 N 638317.55 E Dogleg Rate (°/~OOft) 9.43 11.88 11.99 5.77 13.68 3.28 7.00 5.39 8.40 1.70 6.26 4.38 5.65 9.97 4.28 5.12 9.13 15.01 7.27 3.18 8.96 2.46 12.10 12.11 2.60 0.64 1.61 1.30 2.46 5.96 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 2225.35 2239.79 2253.26 2265.39 2283.59 2300.09 2315.25 2336.60 2352.71 2372.89 2394.89 2414.89 2434.51 2457.90 2480.47 2499.71 2525.11 2552.39 2575.85 2600.72 2631.62 2655.40 2688.14 2716.86 2744.44 2835.14 2921.19 2953.95 2982.73 3006.49 April, 200t - 17:04 Page 3 of 7 DrillOuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A MWD Your Ref: AP1 500292158701 Job No. AKMMfO0$7, Surveyed: f8 March, 200~ North Slope Alaska Measured Depth (ft) Azim. Sub-Sea Depth (ft) Vertical Local Coordinates Global Coordinates Depth Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) (ft) 13704.46 94.740 172.080 8960.19 9038.44 13734.86 96.720 171.950 8957.16 9035.41 13759.49 97.030 171.340 8954.21 9032.46 13797.21 97.280 170.870 8949.51 9027.76 13828.20 95.920 173.300 8945.95 9024.20 13855.36 94.310 175.430 8943.53 9021.78 13876.00 92.710 177.360 8942.27 9020.52 13919.00 91.350 178.920 8940.74 9018.99 13947.21 90.860 180.980 8940.20 9018.45 14041.66 96.530 187.230 8934.11 9012.36 14075.44 96.780 186.700 8930.19 9008.44 14105.92 '96.960 186.910 8926.55 9004.80 14134.34 96.480 188.730 8923.22 9001.47 14168.89 95.170 191.780 8919.71 8997.96 14200.00 93.880 192.990 8917.26 8995.51 14225.88 93.940 193.990 8915.49 8993.74 14321.25 93.450 192.730 8909.35 8987.60 14413.74 93.020 193.640 8904.t3 8982.38 14445.91 93.630 194.620 8902.26 8980.51 14480.54 93.820 193.930 8900.01 8978.26 14506.63 95.110 193.650 8897.98 8976.23 14603.20 93.200 189.860 8890.98 8969.23 14697.02 85.010 183.880 8892.45 8970.70 14774.74 84.330 182.380 8899.67 8977.92 14824.05 83.030 177.980 8905.10 8983.35 14854.40 82.900 177.470 8908.82 8987.07 14880.97 82.970 175.800 8912.08 8990.33 14916.38 82.910 172.760 8916.44 8994.69 14947.06 82.910 172.170 8920.22 8998.47 14972.88 83.340 170.620 8923.32 9001.57 6517.60 S 6272.28W 5942172.23 N 638323.96 E 6547.55 S 6268.08W 5942142.36 N 638328.74E 6571.75 S 6264.52W 5942118.24 N 638332.75 E 6608.72 S 6258.74W 5942081.38 N 638339.25 E 6639.21S 6254.50W 5942050.98 N 638344.07 E 6666.13 S 6251.84W 5942024.11 N 638347.24 E 6686.69 S 6250.55W 5942003.58 N 638348.93 E 6729.64 S 6249.15W 5941960.67 N 638351.15 E 6757.84 S 6249.13W 5941932.47 N 638351.72 E 6851.77 S 6255.85W 5941838.43 N 638346.80 E 6885.07 S 6259.92W 5941805.06 N 638343.37 E 6915.12 S 6263.51W 5941774.95 N 638340.36 E 6943.08 S 6267.35W 5941746.92 N 638337.06 E 6976.90 S 6273.47W 5941712.99 N 638331.59 E 7007.19 S 6280.12W 5941682.58 N 638325.52 E 7032.30 S 6286.14W 5941657.36 N 638319.98 E 7124.89 S 6308.13W 5941564.36 N 638299.77 E 7214.80 S 6329.19W 5941474.06 N 638280.43 E 7245.94 S 6337.03W 5941442.78 N 638273.19 E 7279.43 S 6345.56W 5941409.13 N 638265.32 E 7304.69 S 6351.76W 5941383.75 N 638259.60 E 7398.97 S 6371.37W 5941289.12 N 638241.80 E 7491.98 S 6382.58W 5941195.91 N 638232.38 E 7569.24 S 6386.81W 5941118.58 N 638229.64E 7618.24 S 6386.96W 5941069.59 N 638230.42 E 7648.34 S 6385.77W 5941039.52 N 638232.19 E 7674.66 S 6384.22W 5941013.23 N 638234.24 E 7709.62 S 6380.72W 5940978.34 N 638238.42 E 7739.81S 6376.73W 5940948.24 N 638242.99 E 7765.15 S 6372.89W 5940922.97 N 638247.31 E Dogleg Rate (°/'~OOft) 11.11 6.53 2.76 1.40 8.94 9.81 12.13 4.81 7.50 8.92 1.73 0.90 6.58 9.57 5.68 3.86 1.41 1.09 3.58 2.06 5.06 4.39 10.81 2.11 9.25 1.72 6.24 8.52 1.91 6.19 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 3043.07 3071.76 3095.01 3130.69 3159.88 3185.16 3204.15 3243.22 3268.49 3349.60 3377.61 3402.91 3426.24 3453.80 3477.96 3497.76 3570.87 3642.00 3666.39 3692.59 3712.44 3788.12 3866.42 3933.72 3977.52 4005.00 4029.26 4062.12 4090.93 4115.33 April, 2001 - 17:04 Page 4 of 7 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A MWD Your Ref: AP1 500292158701 Job No. AKMMfO057, Surveyed: f8 March, 2001 North Slope Alaska Measured Depth (ft) Sub-Sea Depth (ft) Vertical Depth (ft) 15005.06 84.150 166.940 8926.82 9005.07 15040.06 84.520 166.790 8930.28 9008.53 15068.26 84.700 165.830 8932.93 9011.18 15104.26 84.200 164.540 8936.41 9014.66 15134.96 83.830 162.180 8939.61 9017.86 15163.66 83.840 160.270 8942.69 9020.94 15197.83 82.840 156.740 8946.66 9024.91 15228.10 82.290 154.370 8950.57 9028.82 15257.36 82.090 151.690 8954.55 9032.80 15290.72 82.850 149.100 8958.92 9037.17 15319.95 83.030 145.390 8962.52 9040.77 15346.46 83.340 143.830 8965.66 9043.91 15383.13 84.890 140.860 8969.42 9047.67 15413.00 86.060 135.550 8971.78 9050.03 15440.27 86.310 136.640 8973.60 9051.85 15475.91 86.920 128.280 8975.70 9053.95 15506.78 86.610 122.770 8977.45 9055.70 15532.34 87.600 121.530 8978.74 9056.99 15572.27 89.320 125.830 8979.81 9058.06 15601.15 89.750 121.010 8980.05 9058.30 15630.53 92.150 124.400 8979.56 9057.81 · 15662.88 93.080 120.850 8978.08 9056.33 15695.68 93.070 120.710 8976.32 9054.57 15724.54 93.630 119.070 8974.64 9052.89 15758.25 93.390 108.780 8972.57 9050.82 15788.98 93.880 106.270 8970.62 9048.87 15816.54 94,500 107.530 8968.61 9046.86 15851.15 94.620 112.180 8965.85 9044.10 15881.92 94.440 109.790 8963.42 9041.67 15911.48 94.680 110.280 8961.07 9039.32 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 7796.52 S 6366.67W 5940891.73 N 638254.13 E 7830.44 S 6358.75W 5940857.97 N 638262.70 E 7857.72 S 6352.11W 5940830.82 N 638269.86 E 7892.36 S 6342.95W 5940796.37 N 638279.69 E 7921.61S 6334.20W 5940767.29 N 638288.99 E 7948.62 S 6325.02W 5940740.45 N 638298.69 E 7980.20 S 6312.59W 5940709.12 N 638311.73 E 8007.52 S 6300.17W 5940682.05 N 638324.67 E 8033.35 S 6287.02W 5940656.47 N 638338.31E 8062.10 S 6270.68W 5940628.04 N 638355.20 E 8086.50 S 6254.99W 5940603.95 N 638371.35 E 8107.95 S 6239.75W 5940582.79 N 638387.01 E 8136.83 S 6217.47W 5940554.35 N 638409.84 E 8159.02 S 6197.63W 5940532.54 N 638430.10 E 8178.62 S 6178.76W 5940513.30 N 638449.34 E 8202.62 S 6152.53W 5940489.82 N 638476.02 E 8220.52 S 6127.46W 5940472.40 N 638501.43 E 8234.10 S 6105.85W 5940459.23 N 638523.30 E 8256.23 S 6072.64W 5940437.74 N 638556.93 E 8272.13 S 6048.55W 5940422.31N 638581.32 E 8288.00 S 6023.83W 5940406.92 N 638606.34 E 8305.42 S 5996.62W 5940390.02 N 638633.88 E 8322.18 S 5968.48W 5940373.80 N 638662.34 E 8336.54 S 5943.50W 5940359.93 N 638687.58 E 8350.17 S 5912.79W 5940346.89 N 638718.55 E 8359.40 S 5883.55W 5940338.22 N 638747.97 E 8367.39 S 5857.25W 5940330.74 N 638774.41 E 8379.11S 5824.81W 5940319.65 N 638807.07 E 8390.09 S 5796.17W 5940309.22 N 638835.92 E 8400.18 S 5768.49W 5940299.66 N 638863.79 E Dogleg Rate (o/,~oort) 11.64 1.14 3.45 3.83 7.74 6.62 10.67 7.97 9.10 8.03 12.61 5.96 9.10 18.15 4.09 23.48 17.85 6.20 11.59 16.76 14,14 11.33 0.43 6.00 3O.48 8.31 5.08 13.40 7.77 1.84 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 4146.19 4180.08 4207.47 4242.56 4272.65 4300.92 4334.73 4364.73 4393.71 4426.73 4455.56 4481.56 4517.33 4546.04 4571.99 4605.15 4632.35 4654.13 4688.73 4713.70 4738.91 4766.63 4794.17 4818.14 4844.02 4865.31 4884.17 4909.10 4931.69 4953.06 April, 2001 - 17:04 Page 5 of 7 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A MWD Your Ref: AP1 500292'15870~ Job No. AKMMlO057, Surveyed: ~8 March, 200~ North Slope Alaska Measured Sub-Sea Vertical Depth Incl, Azim. Depth Depth (ft) (ft) (ft) Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 15946.10 94.620 106.470 8958.26 9036.51 8411.06 S 5735.75 W 5940289.41 N 638896.73 E 16006.18 95.170 108.510 8953.14 9031.39 8429.05 S 5678.66 W 5940272.52 N 638954.16 E 16097.77 95.800 105.980 8944,38 9022.63 8456.08 S 5591.59 W 5940247.17 N 639041.72 E 16133.98 95.790 106.170 8940.72 9018.97 8466.05 S 5556.97 W 5940237.86 N 639076.53 E 16164.90 95.980 105.580 8937.55 9015.80 8474.46 S 5527.39 W 5940230.02 N 639106.27 E 16191.40 95.800 108.220 8934.83 9013.08 8482.13 S 5502.17 W 5940222.84 N 639131.63 E 16286.22 92.520 118.710 8927.94 9006.19 8519.74 S 5415.56 W 5940186.89 N 639218.94 E 16379.19 92.590 113.330 8923.79 9002.04 8560.47 S 5332.13 W 5940147.77 N 639303.14 E 16473.23 93.020 110.090 8919.19 8997.44 8595.21 S 5244.88 W 5940114.71 N 639391.04 E 16564.99 92.030 101.750 8915.14 8993.39 8620.33 S 5156.80 W 5940091.29 N 639479.59 E 16658.94 90.680 109.190 8912.91 8991.16 8645.37 S 5066.35W 5940067.99 N 639570.50 E 16753.48 88.030 110.570 8913.98 8992.23 8677.51 S 4977.46W 5940037.56 N 639660.00 E 16847.27 83.900 103.280 8920.58 8998.83 8704.74 S 4888.04W 5940012.06 N 639749.92 E 16925.89 82.230 102.000 8930.08 9008.33 8721.82 S 4811.89W 5939996.44 N 639826.38 E 16972.69 83.040 102.000 8936.08 9014.33 8731.46 S 4766.49W 5939987.67 N 639871.96 E 17026.39 82.910 102.190 8942.64 9020.89 8742.63 S 4714.37W 5939977.50 N 639924.28 E 17129.15 84.270 101.130 8954.12 9032.37 8763.27 S 4614.37W 5939958.79 N 640024.66 E 17222.56 84.580 100.600 8963.19 9041.44 8780.79 S 4523.07W 5939943.02 N 640116.28 E 17315.61 84.700 100.830 8971.88 9050.13 8798.02 S 4432.04W 5939927.55 N 640207.63 E 17409.69 84.770 101.380 8980.52 9058.77 8816.06 S 4340.11W 5939911.27 N 640299.88 E 17439.53 84.270 99.940 8983.37 9061.62 8821.56 S 4310.92W 5939906.34 N 640329.17 E 17514.00 84.270 99.940 8990.80 9069.05 8834.35 S 4237.93W 5939894.95 N 640402.39 E All data is in Feet unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are relative to Well Reference. Northings and Eastings are relative to Well Reference. Magnetic Declination at Surface is 26.645° (25-Feb-01) The Dogleg Severity is in Degrees per 100 feet. Vertical Section is from Well Reference and calculated along an Azimuth of 153.560° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 17514.00ft., Dogleg Rate (°/100ft) 10.97 3.50 2.83 _0.52 2.00 9.93 11.56 5.78 3.47 9.14 8.05 3.16 8.92 2.67 1.73 0.43 1.67 0.66 0.28 0.59 5.09 0.00 Alaska Drilling & Wells PBU WOA Y Pad Vertical Section Comment 4977.37 5018.90 5081.87 5106.21 5126.92 5145.01 5217.25 5290.87 5360.83 5422.53 5485.23 5553.59 5617.78 5666.98 5695.84 5729.04 5792.05 5848.39 5904.34 5961.43 5979.35 6023.30 Projected Survey April, 2001 - 17:04 Page 6 of 7 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for Y-20A MWD Your Ref: AP1 500292158701 Job No. AKMMlO057, Surveyed: ~8 March, 200~ North Slope Alaska The Bottom Hole Displacement is 9798.25ft., in the Direction of 205.628° (True). Alaska Drilling & Wells PBU WOA Y Pad Comments Measured Station Coordinates Depth TVD Northings Eastings (ft) (ft) (ft) (ft) 11433.07 8453.61 5042.71 S 5185.58W 11449.00 8463.07 5050.04 S 5196.08W 17514.00 9069.05 8834.35 S 4237.93W Comment Tie On Point Window Point Projected Survey Survey tool program for Y-20A MWD From To Measured Vertical Measured Vertical Depth Depth Depth Depth (ft) (ft) (ft) (ft) 0.00 0.00 11433.07 8453.61 11433.07 8453.61 17514.00 9069.05 Survey Tool Description AK-1 BP_HG (Y-20) MWD Magnetic (Y-20A MWD) April, 2001 - 17:04 Page 7 of 7 DrillQuest 2.00.08.005 Re: Changes to Y-20A Permit #201-025 Subject: Re: Changes to Y-20A Permi~~~~E~ Date: Tue, 27 Feb 2001 11:33:40-0~-'- From: Tom Maunder <tom_maunder@admin.state,ak.us> To: "Sherritt, Allen" <SherriJA@BP.com> CC: "Bunch, Anthony S" <bunchas@BP.com>, "Stone, Dan M" <StoneDM@BP.com> Allen, Thanks for the head up regarding the changing situation on Y-20 and Y-20A. We have discussed the progress or lack thereof of the intended pre-rig abandonment and the subsequent intent to accomplish the task during decompletion. The operational path has continued to the current situation where as you note, the condition of the remainder of the original completion is such that additional progress is unlikely. Your proposed changes to the plans are acceptable. As you note, the abandonment of the lower portion of the Y-20 wellbore will be accomplished with a combination of the bridge plug, liner cement and liner top packer. Good luck with your operations. Call with any questions. Tom Maunder "Sherritt, Allen" wrote: :> :> :> :> :> :> :> :> :> :> :> As per our conversation, the following is an outline of the required changes to the Y-20 P&A and Y-20A forward Program, (Sundry #301-019, Permit #201-025.) The decompletion of the existing 4 1/2" tubing, to the proposed depth of 12,300' MD, was unsuccessful The decision has been made to cease decompletion operations and sidetrack above the original kick. off point. The current tubing stump is at 11,657' MD, leaving collapsed tubing @ 11,727' MD and a fish across the production packer @ 12430' MD. An attempt to inject into Y-20 was unsuccessful, however the integrity of the 9 5/8" casing was confirmed, as the 9 5/8" casing held 3000 psi for 30 minutes. The P&A "bullhead" cement job can not be accomplished without the ability to inject into the original well bore. Therefore an EZSV/bridge plug, 7" 150' liner lap cement and g 5/8" x 7" liner top packer will be used to fulfill the Y-20 P&A requirements. A bridge plug has been set @ 11,640' MD, putting the new KOP @ 11,600' MD. Forward plan is to set a whipstock, kick-off drilling out into the Kingak JD formation, holding angle @ -55 degs. The 6 1/2" hole will TD in a siltstone just above the Sag River Formation, @ -12,220' MD / 8817' TVDss, (-620' of 8 1/2"to be drilled.) There are no proposed faults in this interval and lost circulation is not expected. An FIT to 12.5 ppg will be performed after drilling 20' of new formation, (307 bbl kick tolerance.) A 7" 26# L-60 drilling liner will be run from 12,220' MD tied back into the 9 5/8" casing to 11,450' MD, (150' liner lap.) The liner will be cemented in place with ~41 bbls of f5.6 ppg class G cement. This will provide 1 of 2 2/27/01 11:33 AM Re: Changes to Y-20A Permit ~r201-025 > sufficient excess to ensure cement across the liner top packer, @ 11,450' > MD. > Drilling out the 7" shoe, the new directional plan will tie into the > odginal Y-20A plan at Target point #1. The BHL, targets and trajectory are > unchanged from this point forward. There is only a minor change to the > cement volumes required on the 4 1/2" liner, (<10 bbls.) > As we discussed, with the potential of lost circulation in the 6 1/8" hole > and the probability of having to perform a down squeeze "top job" on the 4 > 1/2" liner lap to achieve the P&A, the 7" cement job will provide a more > reliable solution for the P&A of ¥-20. > Hopefully i have covered everything, if you have any questions, comments or > concerns, give me a shout. As soon as I have completed the "new" proposed > completion drawing, ! will fax you a copy. > > Thanks, > > Allen Sherritt > BP Alaska Drilling and Wells >, > * (907) 564-5204 (Direct) * (907) 564-4040 (Fax) > * (907) 240-8070 (Mobile) > * sherrija@bp.com * MB 6-3 / 651B Tom Maunder <tom maunder~,admin.state.ak, us> Petroleum Engineer Alaska Oil and Gas Conservation Commission 2 of 2 2/27/01 11:33 AM ~l~k OIL ~ GA~ CO~SERYATIO~ COMMISSIO~ TONY KNOWLES, GOVERNOR 333 W. 7TM AVENUE, SUITE 100 ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Lowell Crane Senior Drilling Engineer BP Exploration (Alaska) Inc. P O Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Unit Y-20A BP Exploration (Alaska) Inc. Permit No: 201-025 Sur Loc: 1440'SNL, 347'WEL, Sec. 33, T11N, R13E, UM Btmhole Loc. 911'NSL, 4212'WEL, Sec. 4, T10N, R13E, UM Dear Mr. Crane: Enclosed is the approved application for permit to redrill the above referenced well. The permit to redrill does not exempt you from obtaining additional permits required by law from other governmental agencies, and does not authorize conducting drilling operations until all other required permitting determinations are made. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25035. Sufficient notice (approximately 24 hours) must be given to allow a representative of the Commission to witness a test of BOPE installed prior to drilling new hole. Notice may be given by contacting the Commission petroleum field inspector on the North Slope pager at 659-3607. Sincerely, Commissioner BY ORDER OF THE COMMISSION DATED this ~'~'~ day of February, 2001 dlf/Enclosures cc: Department offish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o end. ALASKa(, STATE OF ALASKA ,~ IL AND GAS CONSERVATION COM~..~SION PERMIT TO DRILL 20 AAC 25.005 / I [] Exploratory [;~,Stratigraphic Test i"Vl'Develop'ment Oil 1 a. Type of work [][] Re-EntryDrill []l"~'RedrillDeepen ~ 1 b. Type of well [] Service [] Development Gas [] .~.~ngle Zone .-~-~ [] Multiple Zone 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exploration (Alaska) Inc. Plan RKB = 79.8' Prudhoe Bay Field / Prudhoe 3. Address 6..Prpperty Designation Bay Pool P.O. Box 196612, Anchorage, Alaska 99519-6612 ~ z,~, Z_~z~.AD-L 047471 ' '~ ~ -'~ N 4. Location of well at sudace 7. Unit or P¢ope~y ame 11. Type Bond (See 20 AAC 25.025) 1440' SNL, 347' WEL, SEC. 33, T11N, R13E, UM Prudhoe Bay Unit At top of productive inte~al 8. Well Number 3153' NSL, 1386' WEL, SEC. 05, T10N, R13E, UM Y-20A Number 2S100302630-277 At total depth 9. Approximate spud date 911' NSL, 4212' WEL, SEC. 04, T10N, R13E, UM 0~10/01 Amount $200,000.00 , 12. Distance to nearest prope~y line ~13. Distance to nearest well 14. Number of acres in prope~y 15. Proposed depth (MD and ~D) APL 028287, 911' MD~ No Close Approach 2560 18210' MD / 9062' ~D 16. To be completed for deviated wells 17. Anticipated pressure [see 20 AAC 25.035 (e) (2)} Kick Off Depth 12220' MD Maximum Hole Angle 93.9 o Maximum sudace 2506 psig, At total depth (TVD) 8800'/3386 psig 18. Casing Program Specifications Setting Depth Size To 3 Bottom Quantity of Cement Hole C~sinq Weiqht Grade Coupling Length MD TVD MD ~D (include sta~e data) 6-1/8" 4-1/2" 12.6ff L-80 BTC-M 6160' 12070' 8829' 18210' 9062' 860 cuff Class'G' , , , ,, ........ , , , , ,, ,,, 19. To be completed for Redrill, Re-ent~, and Deepen Operations. Present well condition summa~ Total depth: measured 13866 feet Plugs (measured) true ve~ical 9012 feet Effective depth: measured 13866 feet Junk (measured) Obstruction in tubing at 11740' (Approx.) (02/97) true vedical 9012 feet Camco Fish at 12359' (06/87) Casing Length Size Cemented MD TVD Structural Conductor 110' 20" 8 cu yds Concrete 110' 110' Sudace 3095' 13-3/8" 4389 cuff Permafrost 3095' 2697' Intermediate Production 12656 9-5/8" 920 cuff Class 'G' 12646' 8981' Liner 1436' 4-1/2" Uncemented Slotted Liner 12430' - 13866' 8946' - 9012' RECEIVED Perforation depth: measured Slotted Inte~al: 12659'- 13823' J~N ~ 6 true ve~ical Slotted Inte~al: 8983' - 9011' A~aska Oil & Gas Cons. Commission Anchnmn~ 20. Attachments M Filing Fee ~ Prope~y Plat ~ BOP Sketch ~ Dive~r Sketch ~ Drilling Program ~ Drilling Fluid Program ~ Time vs Depth Plot ~ Refraction Analysis ~ Seabed Repo~ ~ 20 AAC 25.050 Requirements Contact Engineer Name/Number: Allen Sherri~, 5~-5204 Prepared By Name/Number: Terrie Hubble, 564-4628 21. I hereby ce~ify t~t th~ fo(~.~~and c~ect to the"'best of my knowledge ' ' , / ' ' Signed Lowe,, Crane ~/~ ~~~ Title Senior Drilling Engineer Date · ';~' ~":~: ~ ~,~ ~.'~,. ",::.~:'?' '.~,.... ~' ..'~:~.~'~ ~; ~,. :~ :~,~,.: ~...;: ?:' ::,,~: ;. '":, :~ ~.. :~:~,,~ ~ ~".~ ~.;.,.'.'.,~;~.:~ F' .~ ',:~:~,:~.C~'~i~i~:h :U~".~t~ .~"~: '..~. ~',. i:.,; :;~ ~.:. :. :....: :~: ::~,: ,,~.. ~.~. :,~ ,~:::. ::;:r' ~,. ~;,,~.:' 4."..~ :': :':~.:'~:;~' :: '..: ~ .... :..:/' ::;:;; :~' ';~ Permit'""' Number' ' " ' ' ""' ';'~'"'"'"""'_1 APl Number""'("" "~;' "'"""'"""/"' '"'" "~ ' '""""' I'"' '"'""""'Approval"'Date' ' ' I See' ' "cover' le'{t"'er "' ' ' " ~'~ -' ~ ~1 50-029-21587~1~ ~ I I for other requirements Conditions of Approval: Samples Required ~ Yes .~o Mud Log Required ~ Yes .~o Hydrogen Sulfide Measures .~es ~ No Directional Su~ey Required ~es ~ No Required Working Pressure for DOPE ~ 2K ~3K ~ 4K ~ 5K ~ 10K ~ 15K ~ 3.5K psi for CTU Other: by order of Approved By Commissioner the commission Date ., Form 10-401 Rev. 12-01-85 Submit In Triplicate I Well Name: I Y-20A Drill and Complete Plan Summary Type of Well (service / producer /injector): I Producer Surface Location: Target Location: Sadlerochit Zone 4 sands Bottom Hole Location: X = 644,470 Y = 5,948,809 1440' SNL 347'WEL S33T11N R13E X = 638279.00 Y = 5,942,727.00 3153' FSL 1386' FEL S05, TION, R13E X = 640,780.00 Y = 5,940,530.00 911' FSL 4212' FEL S04, T10N, R13E Umiat Umiat Umiat I AFE Number: 14P1434 t Estimated Start Date: 12/10/2001 IUD= 118,210' I I TVD= 19062' I Rig: I Nabors7ES I Operating days to complete' 119.6 I I BF/MS: 151.1' I I RKB: 179.8' I Well Design (conventional, slimhole, etc.): I Ultra Slimhole Horizontal Sidetrack I Objective:I Sadlerochit Formation (Target Zone 4) Mud Program: Production nterval Mud Properties: QUIKDRILn 6 1/8" hole ! Density Plastic Yield Point tau0 LSRV FluidLoss (ppg) Vis(cp) (lb/100ftz) (ib/-~'-~-(~ft2) ~H Ca -- cc's/3Omin Milling 8.4-8.5 5 - 8 25 - 35 5 - 8 < 20 K 8.5 - 9.0 <100 <10 Production 8,4-8.5 5-8 20-28 5-8 <20K 8.5-9.0 <100 <10 Directional: KOP: 112220' Maximum Hole Angle: Close Approach Wells: 93.9° at 13220' MD There are no close approach wells other than the abandoned Y-20 wellbore. The Y-20A wellpath will cross under the existing Y-20 at - 13,159' MD with -55' center-to- center distance. Logging Program: Production Hole Y-20A Permit to Drill IDrilling: MWD / GR / Res / PWD / ABI Open Hole: None Cased Hole: None RECEIVED JAN ?, 6 ZOO1 Alaska Oil & Gas Cons. Commission Anchorage Page 1 Formation Markers: Formation Tops MDbkb TVDss Estimated pore pressure, PPG Sag River 12200 8817 8.0 ppg. Kick off point 12,220' Shublik 12304 8833 8.0 ppg Top Sadlerochit 12548 8897 7.2 ppg Zone 4 TD 18210 8986 7.4 ppg Casin I/Tubing Proqram: Hole Csg! Wt/Ft Grade Conn Length Top Btm Size Tbg O.D. MDrrVD MD/TVD bkb Existing 20" 91.5# H-40 WLD 109' GL 109/109 Existing 13-3/8" 72# L-80 BTRS 3095' GL 3095'/2697' Existing 9-5/8" 47# L-80 BTRS 12220' GL 12220'/8890' 6-1/8" 4-1/2" 12.6# L-80 BTC-M 6160' 12070'/8829' 18210'/9062' Tubing 4-1/2" 12.6# L-80 BTC-M 12070' GL 12070'/8829' Cement Calculations: Casin~l Size 14-1/2" Production Liner I Basis: I Lead' None Tail: Based on 5990' open hole volume + 30% excess + 80' shoe track volume + 150' liner lap + 200' above liner top. Tail TOC: At -12070' MD (8829' TVDbkb) Liner Top. IT°talCementV°lume: I Tail 1153bbl/860f¢/562sks°fD°wellClassGat15'8pPgand1.53cf/sk. Well Control: Well control equipment consisting of 5000 psi working pressure pipe rams(2), blind/shear rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Based upon calculations below BOP equipment will be tested to 3000 psi Diverter, BOPE and drilling fluid system schematics on file with the AOGCC. Production Interval- . Maximum anticipated BHP: · Maximum surface pressure: 3386 psi @ 8800' TVDss - Sadlelochit Zone 4 Sands 2506 psi @ surface (based on BHP and a full column of gas from TD @ 0.10 psi/ft) · Planned BOP test pressure: 3000 psi (required for casing test) · Planned completion fluid: 8.6 ppg seawater/6.8 ppg Diesel RECEIVED Y-20A Permit to Drill JAN ~ 6 ;~001 Alaska 0il & Gas Cons. Commission Anchorage Page 2 Drilling Hazards/Contingencies: (See also hazards identified following the Procedure Summary) HYDROGEN SULFIDE - H2S · Standard Operating Procedures for H2S precautions will be followed at all times. The highest level of H2S recently measured on Y-pad in the last 12 months was on Y- 19 (100 ppm in March, 2000) · The closest wells to Y-20, with H2S readings, are Y-37, (50 ppm) and Y-19, (80 ppm). Both were measured in September, 2000. The closest bottom location to the planned Y-20A sidetrack is Y-29. This well measured 10 ppm in November, 2000. DRILLING CLOSE APPROACH' There are no close approach issues, other then the abandoned Y-20 wellbore. The Y-20A well path will cross under the existing Y-20 at - 13,159' MD with -55' center-to-center distance. This crossing point will occur at the horizontal landing point, ~55' TVD below the Y-20 well bore. The Y-20 production interval will be P&A'd during rig operations prior to drilling the Y-20A sidetrack. Disposal: · No annular pumping in this well. · Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS-04. · Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS- 04 for injection. Haul all Class I wastes to Pad 3 for disposal. DRILL AND COMPLETE PROCEDURE SUMMARY Pre-Rig Work: 1. O Perform injection test to confirm injection rates for up coming rig P&A. T x IA are in communication due to collapsed tubing at 11,740' MD. Note: The results of this test will determine required rig P&A operations for Sundry application. Please schedule this test at your earliest convenience. Wait for Approved Sundry prior to completing the remainder of pre-rig work. . RU slickline and drift tubing for upcoming tubing cut. RU E-line. Chemical cut the 4¥2" L-80 tubing at +/-11,706' MD (as per the 5/29/86 Tubing Summary, this is -will leave a 7' stump from the first full joint of 4-1/2" tubing immediately above the Otis Sliding Sleeve). On 5130197, a video log was run to assess the tubing obstruction at -11,723' MD. The video showed an egged shaped collar in the 10' pup joint immediately above the Otis Sliding sleeve and the 10' pup joint immediately below the sleeve was collapsed. 4. O Displace the well to clean seawater by circulating down tubing through the tubing cut. Continue to circulate until clean seawater returns to surface. Freeze protect top 2200' MD with diesel. The well should not be left with methanol as a freeze protect fluid, diesel only. RECEIVED Y-20A Permit to Drill JAN 2 2001 Page 3 Alaska Oil & Gas Cons. Commission Anchorag. e 5. 0 6. 0 Note: The integrity of the 9 5/8" annulus cannot be confirmed due to open perforations and the collapsed tubing. The 9 5/8" will be tested with the rig. Test the 9-5/8" mandrel packoff and tubing hanger seals to 5000 psi for 30 minutes. Bleed tubing and annuli pressures to zero. Set a BPV in the tubing hanger and test from below to 1000 psi. Secure well. Remove the well house and flowlines. If necessary, level the pad. Please provide total well preparation cost on the handover form. Ri_ Or erations: 1. MIRU Nabors 7ES. 2. Circulate out freeze protection and displace well to seawater. Set TWC. 3. Nipple down tree. Nipple up and test BOPE. 4. Pull and lay down 4-1/2" tubing from E-line chemical cut at -11,706' MD. 5. RIH with 100' of washpipe with overshot and outside cutter. Washover tubing and perform outside cut below collapsed tubing at -11,757'. POOH. 6. RIH 4" DP and 550' of washpipe with overshot and outside cutter. Washover tubing and perform outside cut on tubing at -12,300'. POOH. 7. RIH 4" DP and full gauge mill to -12,300', (tag tubing stump.) POOH. * Notify the field AOGCC representative with intent to plug and abandon * 8. RIH and set 9-5/8" EZSV to position top of whipstock at +12,220' MD. PU out of EZSV and test 9 5/8" casing to 3000 psi for 30 min. 9. Sting into EZSV with running tool, establish injection below packer and displace 33 bbls cement (includes 5 bbls for squeeze into formation.) POOH and lay down running tools. 10. RIH with 9-5/8" Baker bottom-trip anchor whipstock assembly. Orient whipstock as 60° right of HS and set on bridge plug. Mill and dress window in 9-5/8" casing at -12220' MD. POOH. 11. RIH with 6-1/8" drilling assembly (MWD/GR/Res) to whipstock. Perform FIT to 9.5 ppg. Kickoff and drill the 6-1/8" production section as per directional plan in Zone 4, to an estimated TD of +18,210' MD (9062' TVD). 12. Run and cement a 4-1/2" 12.6# production liner, fully cemented into the 9-5/8" casing liner lap, -12,070' MD. Displace well to clean seawater. POOH. 13. Test the 4-1/2" x 9-5/8" casing from the 4-1/2" landing collar to surface to 3000 psi for 30 minutes.. 14. RIH with 2-1/2" perf guns conveyed on 2-3/8" X 4-1/2" DP. Perforate ±1500' of selected interval w/ ±600 psi overbalance to the reservoir. Monitor well and POOH LD DP. 15. Run 4-1/2", 12.6# L-80 completion tying into the 4-1/2" liner top. 16. Set packer and test the tubing to 3500 psi and annulus to 3000 psi for 30 minutes. 17. Nipple down the BOPE. Nipple up and test the tree to 5000 psi. 18. Freeze protect the well to -2200' and secure the well. 19. Rig down and move off. RECEIVED JAN g Z001 Alaska Oil & Gas Cons. Comrnission Anchorage Y-20A Permit to Drill Page 4 Post-Rig Work: 1. MIRU slickline. Pull the ball and rod / RHC plug from 'X' nipple below the new production packer. Install gas lift valves. Estimated Pre-Rig Start: 01/29/01 Estimated Spud Date: 02/10/01 Allen Sherritt Alaska Drilling & Wells 564--5204 mailto:sherriia @ BP.com RECEIVED J/~N 2 6 Z001 Alaska Oil & Gas Cons, Commission Anchorage Y-20A Permit to Drill Page 5 Job 1- MIRU Hazards and Contingencies > Wells Y-27, (40.7') and Y-11, (34.4') are not required to be shut-in for the rig to move on to well Y-20. Reference RPs 4° "Drilling/Workover Close Proximity Surface and Subsurface Wells Procedure" Operational Specifics Job 2: Decomplete Well Hazards and Contingencies > Tubing will be cut during pre-rig operations at - 11,706' MD. Two additional trips will be required to remove the remainder of tubing below the kick off depth. An EZSV will be utilized to bullhead cement for the Y-20 P&A. If injection cannot be established, cement across the liner lap and the liner top packer will be critical for the P&A of Y-20. A down squeeze cement job may be required prior to setting the liner top packer to ensure cement across the liner lap. Other then the collapsed joint at 11,740' MD, the tubing should be in relatively good shape. Reference RPs 4. De-Completions Operational Specifics Job 3: Run Whipstock Hazards and Contingencies ~ Critical whipstock is positioned below the top of the Sag River formation, 12,220' MD (8817' TVDss), to avoid any Kingak shale exposure. Reference RPs RECEIVED Operational Specifics JAN 2, 6 2001 Alaska Oil & Gas Cons. Commission Anchorage Job 7: Drillinq Production Hole - 6 1/8" Hazards and Contingencies ~ There are 12 possible fault crossings in the Y-20A horizontal polygon. With the exception of faults 4, 5, 11 and 12, the well path crosses the faults in as optimal an Y-20A Permit to Drill Page 6 orientation as possible. The risk of lost circulation is mitigated by crossing these faults where they are perpendicular to regional stresses, near the TSAD taking advantage of additional clay smearing in the fault plane from overlying Shublik formation, and away from intersections and tip-outs. The well path will pass near fault "tip" zones associated with faults 4 and 5. Geo- steering to the east within the target polygon as the well approaches fault 4 will allow crossing fault 4 at a considerably cleaner break and should completely bypass the tip- out zone of fault 5. The orientation of faults 11 and 12 favor conductivity and lost circulation because they are both parallel to the major regional stress and are therefore likely to gap open. To mitigate this risk, consideration will first be given to stopping short if economic reserves have been observed. Evidence for either of these faults is poor, so if drilling to TD is deemed necessary, geo-steering to the north side of the polygon will optimize standoff from both of these faults. A Lost CircUlation Decision tree has been provided for use in the event of fluid losses. If losses become severe and cannot be mitigated, early TD and/or suspension of the well will be considered. Reference RPs Operational Specifics Job 9: Case and Cement Production Liner - 4 1/2" Hazards and Contingencies ~ If the bulhead P&A of Y-20 is unsuccessful, cement across the liner lap will be critical for meeting the P&A requirements for the Y-20 production hole. If significant losses are encountered during the primary cement job or no cement returns are seen after bumping the plug, a top job on the liner lap will be performed prior to setting the liner top packer. Reference RPs Operational Specifics RECEIVED JAN ~ ~ 2001 Alaska 0il & Gas Cons. Commission Anchorage Job 10: DPC Perforate Well Hazards and Contingencies ~ -1500' of DPC perforating guns will be run to perforate the -6000' 4 Y2" liner. To help mitigate sticking the guns, the well will be perforated overbalanced using 8.6 ppg seawater and 8.5 ppg QUIKDRILn high vis. Perf. pill Reference RPs Y-20A Permit to Drill Page 7 Operational Specifics Job 12: Run Completion Hazards and Contingencies ~ No hazards specific to this well have been identified for this phase of the well construction. Reference RPs Operational Specifics Job 13: ND/NU/Release Riq Hazards and Contingencies ~ No hazards specific to this well have been identified for this phase of the well construction. Reference RPs Operational Specifics RECEIVED J~N ~ 6 ZOO1 Alaska Oil & Gas Cons. Commission Anchorage Y-20A Permit to Drill Page 8 TREE: 4" CIW WELLHEAD: GRAY ACTUATOR: AXELSON SMALL CMT'd -- 13-3/8"' 72#/fl' I I L-80, BTRS '095 IKOP 1: 400' I ANGLE:43° to 54° 4-1/2", 12.6#/ft, L-80, IPC Ab MOD BUTT TUBING TUBING ID: 3.958" CAPACITY: 0.0152 BBL/FT WARNING ! Obstructed Tubing 11,740' WARNING ! 6/26/87 CAMCO FISH IN HOLE @ 12359 WLM -SEE TELEX FOP, DESCRIPTION Y-20 KB. ELEV = 89.03° Bf. ELEV = 51.13' SSSV LANDING NIPPLEI ~149' I (OTIS)(3.813" ID) GAS LIFT MANDRELS (OTIS LBD W/RA LATCH) N" MU(BK~) TVDSS 8 3523 2901 7 6443 4926 6 8370 6286 5 9498 7094 4 10157 7585 3 10891 8049 2 11549 8436 1 11656 8502 SLIDING SLEEVE 4-1/2" OTIS I 11723' I (3.813" MIN. ID) 4-1/2 .... X" NIPPLE , (OTIS) (3.813" ID) I 11777' 4-1/2" "X" NIPPLE (OTIS)(3.813" ID) I 11817' Tubing Seal Assy I 12418' 9-5/8" PACKER I 12430, (TIW) 9-5/8", 47#/ft, L-80, BTRS I12646. I'-- & NSCC MAXIMUM HOLE DEV: 88° at 13,800' DEV AT 8800 TVD 72 ° DEV AT 13866' TD IS 88° Solid 4 1/2" - 13.5#L-80 AB Mod. BTR Liner 4-1/2" , 13.6#/ft, NB FL 4S, SLOTTED LINER SLOTTED LINER DEPTHS TOP: 12659' BOTOM: 13823' HORIZONTAL SLOTTED LINER Ala~ COMMENTS COMPLETION PUT ON MACINTOSH Tubing Obstruction / Old Fish PC Revision PRUDHOE BAY UNIT WELL: Y-20(5-10-13) APl NO: 50-029-21587 SEC 33; TN 11; RGE 13 BP Exploration (Alaska) ECEiVED :a Oil & Gas Cons. Commission Anchorage TREE: 4" CIW - 5M WELLHEAD: Gray - 5M Y A Proposed COmpletion GL Elevation = 30.2' Nabors 7ES RKB = 59.5' 4-1/2" 'X' Landing Nipple with 3.813" seal bore. i 2200' I 13 3/8", 72 #/ft, L-80 BTRS I 3095' 13 3/8" x 9 5/8", Cement and Arctic Pack. 4-1/2" x 1-1/2" Camco 'MMG' Gas Lift Mandrels with handling pups installed above and below. ....................... 9~_S_LJFT..MAND~E. LS ............. i ......... --fY!:). - ........................ _S!z.e ............... _V. __al_v_e._.~ yP_e 1 i , 1-1/2, RP Shear 1-1/2" DV /I r (or ljt above 1-1/2" DV - ; packer) !R CE VED J/~N ~ 6 Z001 Alaska Oi~ & Gas Cons. Commission Anchorage 4-1/2" 12.6# L-80, IBT Mod Tubing 9 5/8" x 4 1/2" Baker'S' Production Packer ". @ -11900' MD 4-1/2" 'X' Landing Nipple with 3.813" seal bore. 4-1/2" 'X' Landing Nipple with 3.813" seal bore. 4-1/2" WireLine Entry Guide spaced-out into liner top. 4-1/2" Liner ZXP top packer and Flexlock hanger. Window Milled from Whipstock Top of Window at +/- 12200' MD EZSV set at +/-12220' MD TOC at +/-12220' MD TOF at +/-12359' MD LinerTop at I 12430' 9-5/8", 47 #/ft, L80, BTRS 1 12646' I & NSCC Slotted Liner at +/-12659' MD to 13,823'MD 4-1/2" 12.6 #/ft, L-80, I 13,866' I 4-1/2" 12.6 #/ft, L-80, IBT-Mod I +/-18221' I Horizontal Sidetrack into Zone 4 Sands PRUDHOE BAY UNIT WELL: Y-20A APl #: 50-029-21587-01 ...... D_a_t_e ............. .,R.. _.evis_ d., by ............... _.C..._o__m_.m_e__n.__t~ .... 1_/_810_!_ .......... J._A_S_ ..................... .P r_ .o.p..o.s..e...d..c._o...._m.p!9.ti.o..n ....................... North Slope Alaska Alaska Drilling & Wells Proposal Data for Y-20A Wp02 Vertical Odgin: VVel Horizontal ~: V~I Measurement Units: Nor~ Refere~e: True North ¥~rtical 8e~ion ~: 0.00 N,O.O~ Depl~ Dei~h ~.cUon R=~e 12220.0072,800229.603 8~9.46 M$7.6~ 8 5681.00W 1212.16 12260.0074.099234.424 8900.86 S481.24 8 $711.21 W1214.15 12364.6874.877247.439 8928.97 $$30.11 8 5799.17 W1203. ,',~ 12.00 12652.0574.877, 247.439 9~03.94 5636.55 8 6055.36 W1143.98 0.00 13086.1193.514189.0~0 9051.83 5961.98 g 6306.74 W1266-37 14.00 13219.6693.959170.268 9043.05 6094.65 $ 6305.90 W 1375.53 14.00 13672,4393.959170.268 9011.79 6539.8a 8 6229.54W 1 ,'~3.99 0.00 13930.1393.9~0196.100 8993.83 6794.24 8 6243.70 W1984.36 ]0`00 14071.4793.645210.262 8984.48 6923.65 8 6299.08 W2058.52 10.~0 14362.5393.645210.262 8965.98 7174.~4 8 6445.46 W2180.08 0.00 14565.2~87.0~0191.100 8964.83 7363.21 8 6516-67W 2293. ,'~ 10.00 14786.59$1.815169.469 8986.65 7582.09 -~6517.94 W2472.34 10.00 15105.4681.815169.469 9032,05 7892.408 6460.Z6 W2759.62 0`00 15512.0292.008130.000 9054.83 8235.31 8 6239.36W 3155.75 10.00 15730`2592..~O10~166 9046.06 8340.67 S 6069.96W 3350.69 ]0`00 16782.4492.540I0~.!66 8999.43 866&38 $ 50rll.19W4192.01 0`00 17069.5686.91080.000 9000.83 86~.63 8 478T.79 W4371.14 10,~ 1 ,n'257.50 84;.925 6L 1 ,'~9011.03 8626.54 8 4611Jgw 4421.35 10`00 18129.9086.9~ 61.1,'~ 9057.8~ 8206.578 3~1~.36W 4515.10 18209.9086.92561.178 9062,12 816&06 8 37~.~7W 4523.?0 0`00 Current Well Proper'des Well: Y-20A WP02 Horizontal Coordinates: Ref. Global Coordinates: 5G48809.00 N, 644470.00 E Ref. Structure Reference:331.00 N, 3271.92 W Ref. Geographical Coordinates: 70° 16' 03.1810" N, 211° 10' 0&6943" E 79.83ft above Mean Sea Level 79.83ff above ~mucture Reference RKB Elevation: Measurement Units: ft PBU_WOA Y Pad I DrillQuesf Y-20A WP02 RE Single Well Target Data for Y-20A WP02 North Reference: True Norlh Units: Feet J~ Alaska Oil Coordinate TVD Northings Eaetlngs Target Norlhlngs Easllngs Target Name PF~ TVD ss ASP Y ASP X Shape Fault 1 Eal~d Point 8993.37 8913,54 5943075.00 N 638566.00 E 5619.64 S 6012.96 W Point Fault 2 Fmfxy Point 9027.17 894?.34 5943007.00 lq 638445.00 E 5685.30 S 6135.24 W Point Fault 3 Enby Point 9029.94 8950.11 5942454.00 N 638239.00 E 6234.25 S 6351.~2 W Point Fault 5 Ent~3, Point 8977.23 8897.40 5941702.00 lq 638127.00 E 6983.96 S 6478.23 W Point Fault 6 Ent~- Point 9035.25 8955.42 5940819.00 N 638160.00 E 7867.43 S 6462.18 W Point Fault 8 Entry Point 9036.8~ 8957.05 5940294.00 N 638755.00 E 8403.75 S 5877.36 W Poin! Po~, Fanlt 10 Entry Point 9001,73 8921.90 5940059.00 N 639520.00 E 8653.39 S 5117.01 W Point Poss. Fault 11 Entry Point 9035.59 8955.76 5940323.00 N 640421.00 E 8406.73 S 4211.11W Point Po~. Fault 12 Enh-y Point 9055.12 8975.29 5940503.00 lq 640733.00 E 8232.75 S 3895.72 W Point Po~. Fault 4 Eaby Point 9001.56 8921.73 5942039.00 lq 638177.00 E 6647.98 $ 6421.77 WPoint Po~. Fault 7 Enlzy Point 9052.46 8972.63 5940416.00 N 638428.00 E 8275.50 S 6201.96 W Point Po~. Fault 9 Enby Point 9026.38 8946.55 5940223.00 lq 638984.00 E 8479.13 $ 5649.77 WPo:mt Y-20A Polygon Enl~j' Point 9051.83 897.2.00 5942727.00 N 638279.00 E 5962.06 S 6306.58 W Polygon Y-20AT1 Eaf~r Point 9051.83 8972.00 5942727.00 N 638279.00 E 5962.06 S 6306.58 W Point Y-20A T2 Entry Point 8993.83 8914.00 5941896.00 N 638358.00 E 6794.43 S 6243.55 W Point Y-20AT3 Ent~ Point 8964.83 8885.00 5941322.00 N 638096.00 E 7363.29 S 6516.51W Point Y-20A T4 Eatry Point 9054.83 8975.00 5940455.00 N 638370.00 E 8235.39 $ 6259.20 W Point Y-2OAT5 Entvj Point 90~0.83 8921.00 5940030.00 N 639850.00 E g6~.72 S 4797.63 W Point Y-20A T6 En~y' Point 9057.83 8978.00 5940530.00 N 6407g0.00 E 8206.66 S 3848.21 W Point ~' - ~ ......... 1 : g=' .topant., Liner .gO' MD z TVD 200 1600 2000 2400 2800 3200 3600 4000 4400 4800 CEiVED Gas Cons. . , ~11 ~ ~ 9200 Scale: linch = 400ft Vertical Section Section Azimuth: 145.000° (True North) ~l~er~r~f-~-~. I North Slope Alaska DRILI. IN{$ SERVlr'ES ..~=~; ~aska Drilling & Wells PBU WOA Y Pad Y-20A WP02 I DrillQuestTM -5400 - -6000 - -6600 - .~ -7200 - Z -7800 -8400 - ~ -9000 - F~ 2 Fmdt 3 ' I -6900 Fttt~lt l Exit ~ 12.000~1100ft, 75.000~' TF: 12220.00ft MD, 8889.46ft TVD Dir ¢~ 12.000~ll00ft: 12260.00ft MD, 8900.86ft TVD 12364.68ff MD, 8,q28.97ft TVD Dir(~ 14.000~1100ft: 1265Z05ff MD, 9003.94ffTVD Dh': 13219.66ft MD, 9043.05ft TVD Dir¢~ 10.000~ll00ft: 13672.43ft MD, 9011.79ftTVD 14071.47ft MD, 8984.48ff TVD Dir (~ 10.000°ll00ft: 14362.53ft MD, 896~.98ft TVD End Dh': 14786.59ft MD, 8986.65ff I'VD Proposal Data for Y-20A Wp02 Vertical Origin · Well Horizontal Origin: Well Measurement Units: tt North Reference: True North Dogleg severity: Degrees per 100 feet Vmfical Section Azimuth: 145.000° Vertical Section Description: Well Vertical Sec'don Origin: 0.00 N,O.00 E Measured Incl, Azim. Vertical Norlhings Easfing$ Vertical Dogleg Depth Depth Section Rate 12220.~0 72.800 229.603 8889.46 5457.65 S 5681.00 W 1212.16 12260.00 74.099 234.424 8900.86 5481.24 $ 5711.21 W 1214.15 12.00 12364.68 74.877 247.439 8928.97 5530.11 S 5799.17 W 1203.73 12.00 12652.05 74.877 247.439 9003.94 5636.55 S 6055.36 W ! 143.98 0.00 130~6.11 93.514 189.000 9051.83 5961.98 S 6306.74 W 1266.37 14.00 13219.66 93.959 170.268 9043.05 6094.65 S 6305.90 W 1375.53 14.00 13672.43 93,959 170.268 9011.79 6539.83 S 6229.54 W 1783.99 0.00 13930.13 93.900 196.100 8993.83 6794.34 S 6243.70 W 1984.36 10.00 14071.47 93.645 210.262 8984.48 6923.65 S 6299.08 W 2058.52 10.00 14362.53 93.645 210.262 8965.98 7174.54 S 6445.46 W 2180.08 0.00 14565.25 87.000 191.100 8964.83 7363.21 S 6516.67 W 2293.78 10.00 14786.59 81.815 169.469 8986.65 7582.09 S 6517.94 W 2472.34 !0.00 15105.46 81.815 169.469 9032.05 7890--40 S 6460.26 W 2759.62 0.00 15512.02 92.008 130.000 9054.83 8235.31 S 6259.36 W 3155.75 10.00 15730.25 92.540 108.166 9046.06 8340.67 S 6069.96 W 3350.69 10.00 16782.44 92.540 108.166 8999.43 8668.38 S 5071.19 W 4192.01 0.00 17069.56 86.910 80.000 9000.83 g6gg.63 S 4787.79 W 4371.14 10.00 17257.50 86.925 61.178 9011.03 8626.54 S 4611.59 W 4421.35 10.00 18129.90 86.92-5 61.178 9057.83 8206.57 S 3848.36 W 4515.10 0.00 0.00 18209.90 86.925 61.178 9062.12 8168.06 S 3778.37 W 4523.70 ~¢~'- .do ~- ~ _,,x,~o- cun'ent welm Properties .,~° ,~,.~' .,,.~' ~" ~.~'- __ ....... .,~@'~ ' _ ¢ .,~?'- ~'¢' ,,~..'"~' Well: Y-20A WPS ~,0~ _Q.%~y,l,v · ..~..,Co~- _~O, ~,ge~ Hodzomal C°°rdinatas: ~ n~.t~. _~of~o-- .,~.t .~p,- .~o~ Ref. Global Coon]in-ales: 5948809.00 N, 644470.00 E dxc.' ,~?' .o..,(t,-- Ref. Slruclure Rdemnce: 331.05 N, 3271.92 W ~d~ ~ ~x~ @ ~..d~O* Ref. Geographical Coordinates: 41/2' Liner 18209.90' MD 9062.12' TVD 70' 16' 03.1810" N, 211' 10' 05.6943' E 79.83fl above Mean Sea Level 79.83fl above Slmcture Reference North Reference: Tree North Units: Feet Fattlt 8 P~ F~ 9 Po~. Ftutlt IO P~ Fmdt 11 RECEIVED I -6300 Scale: linch = 600ft JAN g 6 ?001 I I ! I -5700 -5100 -4500 -3900 ^laska Oil & Gas Cons. Commission Easting$ Reference is True North Anchorage Sper, y-Sun Drilling Se, vices Proposal Data. Y-20A WPS- Y-20A Wp02 I MD ] Delta Inclin. Azimuth TVD Delta Northings Eastings Dogleg Toolface I (ft)I MD (fi) (°) (°) (ft) TVD (fi) (fi) (ft) (°/100ft) (o) -1112220.00! 72,800 229.603 8889.46 ........ 5457.658 5681.00Wl 2 I 12260.00i 40.00 74.099 234.424 8900.86 11.40 548!.24S 5711.21W 12.0001 75.000 3 12364.68 104.68 74.877 247,439 8928,97 28.11 5530,11 S 5799.17W 12.000 88.208 4 12652.05 287.37 74,877 247,439 9003.94 74.97 5636.55S 6055,36W 0.000 0,000 5 13086.11 434.06 93.514 189.000 9051.83 47~89 5961.98 S 6306.74 W 14.000 292,943 6 13219.66 133.55 93.959 170.268 9043,05 -8.78 6094,655 6305.90W 14.000 271.966 7 13672.43 452.76 93.959 170,268 9011,79 -31,26 6539.83S 6229.54W 0.000 0,000 8 13930.13 257,70 93.900 196.100 8993.83 -17.96 6794.34 $ 6243.70 W 10.000 89.228 9 14071.47 141.34 93.645 210.262 8984.48 -9.35 6923.65 S 6299.08 W 10.000 90.561 10 14362.53 291.06 93.645 210,262. 8965,98 -18~50 7174.54 S' 6445,46 W 0,000 0.000 11 14565.25 202.71 87.000 191.100 8964.83 ,1.15 7363.21 S 6516.67 W 10.000 251.106 12 14786.59 221,34 81,815 169,469 8986.65 21.82 7562.09 S 6517.94W 10.000 255.550 13 15105.46 31&87 81,815 169.469 ' 9032.05". ·45..40 '7892.40 S' 6460.26'W'. .0~000 0.000 .. 14 15512.02 ' 406.56. 92.008 130.000 9054.83 ' ··22.78 8235.31 S 6259.36 W i0.000 '" ··282,817 15 15730.25:2i8.23 92,540 .... 108,'i66" '9046,06 . ....'.';.8.77 ': 8340;67 S'..'6069;98W 10.000· .' 27!.818 '16. 16782.44 1052,19 92.540 ""108;i66'.: B999~43'.'. '..46;64.:';.~8:.38S"'507'~i:19W · 0;000:. ':..:i... 0.000. · i7'' 17069.56 ".287.12 86.910· SO.O00:'9000.83 · .. ···!:40' 8688.63S' 4787.79w' 10.000····.!258.854 1.8 .17257,50 '. 187~=94 86;925 '"::.6i;178:..90~1i.03' ': : ::. '!0;20. '. 8626.54s ' .4611.59.w:' 10.000 ':...2691534 19 '18129~90: ·872.40 :86;925. ... 6·i·.1.78 9057.83 .' 46~80. 8206.57 s 3848.36 w.' .. 0,000 ':. ....0,000 20 1.8209901 8000{ 86925t '.'61'i.78I.' 9062'12!' ': .=~' ;429t 8'16806s~:'377837w' 0000[' '¥:.0000'! 12 January, 2001 - 14:46 - 1 - DrilfQuest North Slope Alaska Alaska Drilling & Wells PBU_WOA Y Pad Y-20A WPS- Y-20A Wp02 PROPOSAL REPORT 12 January, 2001 Surface Coordinates: 5948809.00 N, 644470.00 E (70° 16' 03.1810" N, 211° 10' 05.6943" E) Kelly Bushing: 79.83ft above Mean Sea Level - '1 .... N Vll~ A Halliburton Company Proposal Ref: pro9861 RECEIVED J/~N 2, 6 2001 Alaska Oil & Gas Cons. Commission Anchorage North Slope Alaska Measured Depth (ft) Incl. Azim. Sub-Sea Depth (ft) Vertical Depth (ft) 12220.00 72.800 229.603 8809.63 8889.46 12245.51 73.615 232.686 8817.00 8896.83 12260.00 74.099 234.424 8821.03 8900.86 12300.00 74.306 239.408 8831.92 8911.75 12303.98 74.332 239.903 8833.00 8912.83 12364.68 74.877 247.439 8849.14 8928.97 12400.00 74.877 247.439 8858.35 8938.18 12475.32 74.877 247.439 8878.00 8957.83 12500.00 74.877 247.439 8884.44 8964.27 12548.15 74.877 247.439 8897.00 8976.83 12600.00 74.877 247.439 8910.53 8990.36 12632.48 74.877 247.439 8919.00 8998.83 12652.05 74.877 247.439 8924.11 9003.94 12700.00 76.478 240.710 8935.98 9015.81 12800.00 80.355 226.974 8956.15 9035.98 12900.00 84.761 213.568 8969.16 9048.99 13000.00 89.446 200.355 8974.23 9054.06 13086.11 93.514 189.000 8972.00 9051.83 13100.00 93.579 187.053 8971.14 9050.97 13200.00 93.919 173.027 8964.57 9044.40 13219.66 93.959 170.268 8963.22 9043.05 Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 13300.00 93.959 170.268 8957.67 9037.50 13400.00 93.959 170.268 8950.77 9030.60 13500.00 93.959 170.268 8943.87 9023.70 13600.00 93.959 170.268 8936.96 9016.79 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 5457.65 S 5681.00 W 5943243.32 N 638894.79 E 5472.97 S 5700.02 W 5943227.64 N 638876.07 E 5481.24 S 5711.21 W 5943219.16 N 638865.03 E 5502.24 S 5743.45 W 5943197.55 N 6,388,33.21 E 5504.18 S 5745.75 W 5943195.55 N 638829.94 E 5530.11 S 5799.17 W 5943168.62 N 638778.03 E 5543.19 S 5830.65 W 5943154.93 N 638746.80 E 5571.09 S 5897.80 W 5943125.75 N 638680.21 E 5580.23 S 5919.80 W 5943116.19 N 638658.38 E 5598.06 $ 5962.72 W 5943097.54 N 638615.81 E 5617.27 S 6008.95 W 5943077.45 N 638569.96 E 5629.29 S 6037.90 W 5943064.87 N 638541.24 E 5636.55 $ 6055.36 W 5943057.28 N 638523.93 E 5656.85 S 6097.10 W 5943036.18 N 638482.58 E 5714.56 S 6175.93 W 5942976.97 N 638404.88 E 5790.06 S 6239.82 W 5942900.26 N 638342.45 E 5878.86 S 6284.96 W 5942810.60 N 638299.02 E 5961.98 S 6306.74 W 5942727.08 N 638278.64 E 5975.70 S 6308.68 W 5942713.32 N 638277.17 E 6075.24 S 6308.75 W 5942613.81 N 638279.01 E 6094.65 S 6305.90 W 5942594.46 N 638282.23 E 6173.64 S 6292.35 W 5942515.74 N 638297.29 E 6271.96 S 6275.46 W 5942417.76 N 638316.04 E 6370.29 S 6258.62 W 5942319.77 N 638334.79 E 6468.61 S 6241.76 W 5942221.79 N 638353.54 E Dogleg Rate (°/lOOft) 12.00 12.00 Alaska Drilling & Wells PBU_WOA Y Pad Vertical Section Comment 1212.16 ST Exit @ 12.000°/100ft, 75.000° TF: 12220.00ft MD, ~ 8889.46ft TVD 1213.80 Sag River 1214.15 Continue Dir @ 12.00°/100ft : 12260.00ft MD, 8900.86ft TVD 12.00 1212.86 12.00 1212.55 Shu~ik 12.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14.00 14.00 14.00 14.00 14.00 14.00 14.00 14.00 0.00 0.00 0.00 0.00 1203.73 1196.39 1180.73 1175.60 1165.58 1154.80 1148.05 1143.98 1136.67 1138.72 1163.92 1210.78 1266.37 1276.50 1358.00 1375.53 1448.00 1538.22 1628.44 1718.65 End Dir: 12364.68ftMD,8928.97ftTVD Z4 crest, reinvert Top Sadlerochit Z4 crest, reinvert Begin Dir @ 14.00°/100ft : 12652.05ft MD, 9003.94ft TVD Z41and, inve~ End Dir: 13219.66ffMD,9043.05ffTVD 12 January, 2001 - 14:48 Page 2 of 11 DrillQuest 2.00.06 RECE vl::u Alaska 0il & Gas Cons. Commission Anchorage North Slope Alaska Measured Depth (ft) Incl. Azim. Sub-Sea Depth (ft) Vertical Depth (fi) 13672.43 93.959 170.268 8931.96 9011.79 13700.00 93.991 173.031 8930.05 9009.88 13800.00 94.031 183.056 8923.04 9002.87 13900.00 93.949 193.080 8916.06 8995.89 13930.13 93.900 196.100 8914.00 8993.83 14000.00 93.803 203.102 8909.30 8989.13 14071.47 93.645 210.262 8904.65 8984.48 14100.00 93.645 210.262 8902.84 8982.67 14200.00 93.645 210.262 8896.48 8976.31 14300.00 93.645 210.262 8890.13 8969.96 14362.53 93.645 210.262 8886.15 8965.98 14400.00 92.425 206.715 8884.17 8964.00 14500.00 89.138 197.268 8882.80 8962.63 14565.25 87.000 191.100 8885.00 8964.83 14600.00 86.138 187.727 8887.08 8966.91 14700.00 83.744 177.979 8895.92 8975.75 14786.59 81.815 169.469 8906.82 8986.65 14800.00 81.815 169.469 8908.73 8988.56 14900.00 81.815 169.469 8922.97 9002.80 15000.00 81.815 169.469 8937.20 9017.03 15100.00 81.815 169.469 8951.44 9031.27 15105.46 81.815 169.469 8952.22 9032.05 15200.00 84.009 160.202 8963.91 9043.74 15300.00 86.496 150.482 8972.21 9052.04 15400.00 89.083 140.815 8976.07 9055.90 Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 6539.83 S 6229.54 W 5942150.82 N 638367.12 E 6567.04 S 6225.55 W 5942123.69 N 636371.63 E 6666.61 S 6222.15 W 5942024.21 N 638376.94 E 6765.25 $ 6236.13 W 5941925.31 N 638364.86 E 6794.34 S 6243.70 W 5941896.08 N 638357.84 E 6859.97 S 6267.07 W 5941830.02 N 638335.74 E 6923.65 $ 6299.08 W 5941765.73 N 638304.96 E 6948.25 S 6313.42 W 5941740.87 N 638291.09 E 7034.44 S 6363.72 W 5941653.72 N 638242.46 E 7120.64 S 6414.01 W 5941566.57 N 638193.83 E 7174.54 S 6445.46 W 5941512.08 N 638163.42 E 7207.42 S 6463.30 W 5941478.86 N 638146.21 E 7300.02 S 6500.70 W 5941 385.56 N 638110.60 E 7363.21 $ 6516.67 W 5941322.08 N 638095.64 E 7397.43 S 6522.34 W 5941287.76 N 638090.63 E 7496.78 S 6527.31 W 5941188.33 N 638087.77 E 7562.09 S 6517.94 W 5941103.22 N 638098.77 E 7595.14 S 6515.52 W 5941090.22 N 638101.45 E 7692.45 S 6497.43 W 5940993.27 N 638121.40 E 7789.77 S 6479.34 W 5940896.32 N 638141.35 E 7887.08 S 6461.25 W 5940799.37 N 638161.31 E 7892.40 S 6460.26 W 5940794.08 N 638162.40 E 7982.63 S 6435.73 W 5940704.12 N 638188.66 E 8073.28 S 6394.19 W 5940614.49 N 638231.92 E 8155.67 S 6337.87 W 5940533.20 N 638289.81 E Dogleg Rate (°/100ft) 0.00 10.00 10.00 10.00 10.00 10.00 10.00 0.00 0.00 0.00 0.00 10.00 10.00 10.00 10.00 10.00 10.00 0.00 0.00 0.00 0.00 0.00 10.00 10.00 10.00 Alaska Drilling & Wells PBU_WOA Y Pad Vertical Section Comment 1784.00 1808.58 1892.o9 1964.87 1964.36 2024.71 2058.52 2o7o.44 2112.20 2153.96 2180.o8 2196.78 2251.18 2293.78 2318.55 2397.09 2472.35 2464.43 2574.52 2664.61 2754.70 2759.62 2847.77 2945.69 3045.48 Begin Dir @ 10.00°/100ft 13672.43ft MD, 9011.79fi TVD End Dir: 1 4071.47ftMD,8984.48ftTVD Begin Dir @ 10.00°/10Oft : 14362.53ft MD, 8965.98ft TVD End Dir: 14786.59ftM D,8986.65ft'I'VD Begin Dir @ 10.00°/10Oft 15105.46ft MD, 9032.05ft TVD 12 January, 2001 - 14:48 Page 3 of 11 DrillQuest 2.00.06 RECEIVED JI N 6 2001 Alaska Oil & Gas Cons. Commission Anchorage North Slope Alaska Measured Sub-Sea Vertical Depth Incl. Azim. Depth Depth (fi) (ft) (fi) 15500.00 91.698 131.161 8975.39 9055.22 15512.02 92.008 130.000 8975.00 9054.83 15600.00 92.263 121.1 99 8971.72 9051.55 15700.00 92.487 111.1 93 8967.56 9047.39 15730.25 92.540 108.166 8966.23 9046.06 15800.00 92.540 108.166 8963.14 9042.97 15900.00 92.540 108.166 8958.71 9038.54 16000.00 92.540 108.166 8954.28 9034.11 16100.00 92.540 108.166 8949.84 9029.67 16200.00 92.540 108.166 8945.41 9025.24 16300.00 92.540 108.166 8940.98 9020.81 16400.00 92.540 108.166 8936.55 9016.38 16500.00 92.540 108.166 8932.11 9011.94 16600.00 92.540 108.166 8927.68 9007.51 16700.00 92.540 108.166 8923.25 9003.08 16782.44 92.540 108.166 8919.60 8999.43 16800.00 92.200 106.442 8918.87 8998.70 16900.00 90.232 96.635 8916.74 8996.57 17000.00 88.257 86.830 8918.06 8997.89 17069,56 86.910 80.000 8921.00 9(X)0.83 17100.00 86.890 76.951 8922.65 9002.48 17200.00 86.885 66.936 8928.09 9007,92 17257.50 86.925 61.1 78 8931.20 9011.03 17300.00 86.925 61.1 78 8933.48 9013.31 17400.00 86.925 61.1 78 8938.84 9018.67 Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (fi) (ft) (ft) 8227.50 S 6268.48 W 5940462.72 N 638360.57 E 8235.31 S 6259.36 W 5940455.08 N 638369.84 E 8286.44 S 6187.94 W 5940405.33 N 638442.23 E 8330.49 S 6098.41 W 5940383.01 N 638532.59 E 8340.67 $ 6069.96 W 5940353.38 N 638561.23 E 8362.39 S 6003.75 W 5940332.93 N 638627.85 E 8393.54 S 5908.82 W 5940303.61 N 638723.35 E 8424.68 $ 5613.90 W 5940274.29 N 638818.85 E 8455.63 S 5718.98 W 5940244.97 N 638914.36 E 8486.98 S 5624.06 W 5940215.65 N 639009.86 E 8518.12 S 5529.13 W 5940186.33 N 639105.36 E 8549.27 S 5434.21 W 5940157.01 N 639200.86 E 8580.41 S 5339.29 W 5940127.70 N 639296.37 E 8611.56 S 5244.37 W 5940098.38 N 639391.87 E 8642.71 S 5149.44 W 5940069.06 N 639487.37 E 8668.38 S 5071.1 9 W 5940044.89 N 639566.10 E 8673.60 S 5054.44 W 5940039.99 N 639582.95 E 8693.57 S 4956.61 W 5940021.90 N 639681.15 E 8696.59 S 4856.79 W 5940020.80 N 639781.01 E 8688.63 S 4787.79 W 5940030.08 N 639849.64 E 8682.56 S 4758.01 W 5940036.73 N 639879,50 E 8651.65 S 4663.20 W 5940069.45 N 639973.70 E 8626.54 S 4611.59 W 5940095.54 N 640024.82 E 8606.08 S 4574.41 W 5940116.71 N 640061.60 E 8557.94 S 4486.92 W 5940166.52 N 640148.15 E Dogleg Rate (°/100ft) 10.00 10.00 10.00 10.00 10.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 0.00 0.00 Alaska Drilling & Wells PBU_WOA Y Pad Vertical Section Comment 3144.12 3155.75 3238.6o 3326.o4 3350.69 3406.46 3486.42 3566.38 3646.34 3726.3o 3806.26 3886.22 3966.17 4046.13 4126.09 41 92.Ol 4205.89 4278.36 4338.09 4371.1 5 4383.25 4412.32 4421.35 4425.92 4436.66 End Dir: 15730.25ftMD,9046.06ftTVD Begin Dir @ 10.00°/100ft · 16782.44ft MD, 8999.43ft TVD End Dir: 17257.50ffMD,9011.03ftTVD 12 January, 2001 - 14:48 Page 4 of 11 DrillQuest 2,00,06 RECEIVED Alaska Oil & Gas Cons. Commission Anchorage North Slope Alaska Measured Sub-Sea Vertical Depth Incl. Azim. Depth Depth (ft) (ft) (ft) Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (fi) (ft) 17500.00 86.925 61.1 78 8944.21 9024.04 8509.80 S 4399.44 W 5940216.33 N 640234.69 E 17600.00 86.925 61.1 78 8949.57 9029.40 8461.66 S 4311.95 W 5940266.14 N 640321.24 E 17700.00 86.925 61.1 78 8954.94 9034.77 8413.52 $ 4224.46 W 5940315.95 N 640407.78 E 17800.00 86.925 61.178 8960.30 9040.13 8365.38 S 4136.98 W 5940365.76 N 640494.33 E 17900.00 86.925 61.1 78 8965.67 9045.50 8317.24 $ 4049.49 W 5940415.57 N 640580.88 E 18000.00 86.925 61.1 78 8971.03 9050.86 8269.10 S 3962.01 W 5940465.38 N 640667.42 E 18036.69 86.925 61.178 8973.00 9052.83 8251.44 S 3929.91 W 5940483.66 N 640699.17 E 18100.00 86.925 61.178 8976.40 9056.23 8220.96 S 3874.52 W 5940515.19 N 640753.97 E 18129.90 86.925 61.1 78 8978.00 9057.83 8206.57 S 3848.36 W 5940530.09 N 640779.85 E 18200.00 86.925 61.1 78 8981.76 9061.59 8172.82 S 3787.03 W 5940565.00 N 640840.51 E 18209.90 86.925 61.178 8982.29 9062.12 8168.06 S 3778.37 W 5940569.93 N 640849.08 E All data is in feet unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are relative to Well. Northings and Eastings are relative to Well. The Dogleg Severity is in Degrees per 100 feet. Vertical Section is from Well and calculated along an Azimuth of 145.000° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 18209.90ft., The Bottom Hole Displacement is 8999.62ft., in the Direction of 204.824° (True). Dogleg Rate (°llOOft) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Alaska Drilling & Wells PBU_WOA Y Pad Vertical Section Comment 4447.41 4458.16 4468.9o 4479.65 4490.39 4501.14 4505.08 4511.89 4515.10 4522.63 4523.7o Z4 land, invert Total Depth at 18209.gOft 41/2" Liner 12 January, 2001 - 14:48 Page 5 of 11 DrillQuest 2.00.06 RECEIVED J/~N 2, 6 2001 Alaska Oil & Gas Cons. Commission Anchorage North Slope Alaska Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 Alaska Drilling & Wells PBU_WOA Y Pad Comments Measured Station Coordinates Depth TVD Northings Eastings (ft) (ft) (ft) (ft) 12220.00 8889.46 5457.65 S 5681.00 W 12260.00 8900.86 5481.24 S 5711.21 W 12364.68 8928.97 5530.11 S 5799.17 W 12652.05 9003.94 5636.55 S 6055.36 W 13219.66 9043.05 6094.65 S 6305.90 W 13672.43 9011.79 6539.83 S 6229.54 W 14071.47 8984.46 6923.65 S 6299.08 W 14362.53 8965.98 7174.54 $ 6445.46 W 14786.59 8986.65 7582.09 S 6517.94 W 15105.46 9032.05 7892.40 S 6460.26 W 15730.25 9046.06 8340.67 S 6069.95 W 16782.44 8999.43 8668.38 S 5071.19 W 17257.50 9011.03 8626.54 S 4611.59 W 18209.90 9062.12 8168.06 S 3778.37 W Comment ST Exit @ 12.000°/100ft, 75.000° TF: 12220.00ff MD, 8889.46ft TVD Continue Dir @ 12.00°/100ft : 12260.00ftMD, 8900.86flTVD End Dir: 12364.68ftMD,8928.97ftTVD Begin Dir @ 14.00°/100ft : 12652.05ft MD, 9003.94ftTVD End Dir: 13219.66flMD,9043.05ftTVD Begin Dir @ 10.00°/100ft : 13672.43ft MD, 9011.79ftTVD End Dir: 1 4071.47ftMD,8984.48ftTVD Begin Dir @ 10.00°/100ft : 14362.53ftMD, 8965.98ftTVD End Dir: 14786.59flMD,8986.65ftTVD Begin Dir @ 10.00°/100ft : 15105.46ft MD, 9032.05ftTVD End Dir: 15730.25ftMD,9046.06ftTVD Begin Dir @ 10.00°/100ft : 16782.44ft MD, 8999.43ftTVD End Dir: 17257.50ftMD,9011.03ftTVD Total Depth at 18209.90ft 12 January, 2001 - 14:48 Page 6 of 11 DrillQuest 2.00.06 North Slope Alaska Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 Alaska Drilling & Wells PBU_WOA Y Pad Formation Tops Measured Vertical Sub-Sea Depth Depth Depth Northings (n) (ft) (ft) (fi) 12245.51 8896.83 8817.00 5472.97 S 12303.98 8912.83 8833.00 5504.18 S 12475.32 8957.83 8878.00 5571.09 S 12548.15 8976.83 8897.00 5598.06 S 12632.48 8998.63 8919.00 5629.29 S 13086.11 9051.83 8972.00 5961.98 S 18036.69 9052.63 8973.00 8251.44 S Eastings Dip Dip Dir. Formation Name (ft) Deg. Deg. 5700.02 W 0.000 1.100 Sag River 5746.75 W 0.000 1.100 Shublik 5897.80 W 0.000 1.100 Z4 crest, reinvert 5962.72 W 0.000 1.100 Top Sadlerochit 6037.90 W 0.000 1.100 Z4 crest, reinvert 6306.74 W 0.000 1.100 Z4 land, invert 3929.91 W 0.000 1.100 Z4 land, invert Casing details From Measured Vertical Depth Depth (ft) (ft) 12220.01 8889.46 TO Measured Vertical Depth Depth (~t) (ft) 18209.90 9062.12 Casing Detail 4 1/2" Liner 12 January, 2001 - 14:48 Page 7 of 11 DrillQuest 2.00.06 Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 North Slope Alaska Alaska Drilling & Wells PBU_WOA Y Pad Targets associated with this wellpath Target Name Fault I Fault 2 Fault 3 Fault 5 Fault 6 Fault8 Poss. Fault 10 Poss. Fault 11 Poss. Fault12 Poss. FauE 4 Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: GeographicaJ Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Target Entry Coordinates TVD Northings Eastings (ft) (ft) (ft) 8993.37 8913.54 9027.17 8947.34 9029.94 8950.11 8977.23 8897.40 9035.25 8955.42 9036.88 8957.05 9001.73 8921.90 9035.59 8955.76 9055.12 8975.29 9001.56 8921.73 70° 70° 70° 70° 70° Target Target Shape Type 70° 70° 70° 70° 70° 5619.64 S 6012.96 W Point 5943075.00 N 638566.00 E 15' 07.8842' N 211 ° 07' 10.7928" E 5685.30 S 6135.24 W Point 5943007.00 N 638445.00 E 15' 07.2373' N 211 ° 07' 07.2375' E 6234.25 S 6351.82 W Point 5942454.00 N 638239.00 E 15' 01.8363' N 211 ° 07' 00.9514" E 6983.96 S 6478.23 W Point 5941702.00 N 638127.00 E 14' 54.4612' N 211 ° 06' 57.2935" E 7867.43 S 6462.18 W Point 5940819.00 N 638160.00 E 14' 45.7718' N 211 ° 06' 57.7823" E 8403.75 S 5877.36 W Point 5940294.00 N 638755.00 E 14'40.5014' N 211°07' 14.8002" E 8653.39 S 5117.01 W Point 5940059.00 N 639520.00 E 14' 38.0515' N 211° 07' 36.9136" E 8406.73 S 4211.11 W Point 5940323.00 N 640421.00 E 14' 40.4831' N 211° 08' 03.2494" E 8232.75 S 3895.72 W Point 5940503.00 N 640733.00 E 14' 42.1960" N 211° 08' 12.4174" E 6647.98 S 6421.77 W Point 5942039.00 N 638177.00 E 14' 57.7663' N 211° 06' 58.9271" E Geological Geological Geological Geological Geological Geological Geological Geological Geological Geological 12 January, 2001 - 14:48 Page 8 of 11 DrillQuest 2.00.06 Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 North Slope Alaska Target Name Target Entry Coordinates 'I'VD Northings Eastings (ft) (ft) (ft) Alaska Drilling & Wells PBU_WOA Y Pad Target Target Shape Type Targets associated with this wellpath (Continued) Poss. Fault 7 Poss. Fault 9 Y-20A Polygon Mean Sea Level/Global Coordinates: Geographical C(xm:fmates: Mean Sea Level/Global Coordinates: GeographicaJ Coordinates: Mean Sea Level/Global Coordinates: Geographical Coorcr~mtes: Target Boundary Point #1 #2 #3 #4 #5 #6 #7 ~8 #9 #10 #11 #12 #13 #14 Mean Sea Level/GlobaJ Coordinates #1 #2 ~3 #4 #5 #6 #7 9052.46 8275.50 S 6201.96 W 8972.63 5940416.00 N 638428.00 E 70° 14' 41.7603" N 211 ° 07' 05.3589" E 9026.38 8479.13 S 5649.77 W 8946.55 5940223.00 N 638964.00 E 70° 14'39.7617" N 211°07'21.4196" E 9051.83 5962.06 S 6306.58 W 8972.00 5942727.00 N 638279.00 E 70° 15'04.5138" N 211° 07'02.2603" E 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 9051.83 8972.00 8972.00 8972.00 8972.00 8972.00 8972.00 8972.00 8972.00 5353.60 S 5803.81 W 5694.31 S 6395.46 W 6369.51 S 6443.43 W 7667.90 S 6644.38 W 8434.51 S 6307.03 W 8879.63 S 4794.30 W 8704.78 S 4002.80 W 8167.47 S 3753.44 W 7875.01 S 3930.86 W 8468.59 S 4946.44 W 8215.37 $ 5999.77 W 7309.95 S 6221.44 W 5876.50 S 6074.90 W 5569.42 S 5554.91 W 5943345.00N 638770.00E 5942993.00 N 638185.00E 5942317.00N 638150.00E 5941015.00 N 637974.00E 5940255.00N 638326.00E 5939839.00N 639647.00E 5940029.00N 640635.00E 5940571.00 N 640874.00E Point Geological Point Geological P~ygo. Geok)g~aJ 12 January, 2001 - 14:48 Page 9 of 11 DrillQuest 2.00.06 Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 North Slope Alaska Target Name Y-20A T1 Y-20A T2 Y-20A T3 Y-20A T4 Y-20A T5 Y-20A T6 z ~9 #10 #11 #12 #13 #14 Geographical Coordinates #1 #2 #3 #4 #5 #6 #7 #8 ~9 #10 #11 #12 #13 #14 Mean Sea Level/Global Coor~nates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coo~nates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Mean Sea Level/Global Coordinates: Geographical Coordinates: Target Entry Coordinates TVD Northings Eastings (fi) (ft) (ft) 8972.00 5940860.00 N 640691.00 E 8972.00 5940247.00 N 639685.00 E 8972.00 5940480.00 N 638629.00 E 8972.00 5941381.00 N 638390.00 E 8972.00 5942817.00 N 638509.00 E 8972.00 5943134.00 N 639023.00 E 9051.83 8972.00 8993.83 8914.00 8964.83 8885.00 9054.83 8975.00 9000.83 8921.00 9057.83 70° 15' 10.5024" N 211 o 07' 16.8703" E 70° 15' 07.1466' N 211 ° 06' 59.6686" E 70° 15'00.5051" N 211006'58.2902" E 70° 14' 47.7328' N 211 ° 06' 52,4789' E 70° 14' 40,1954" N 211 ° 07' 02.3076' E 70° 14' 35.8284" N 211 o 07' 46.3011" E 70° 14' 37.5526" N 211 ° 08' 09.3112" E 70° 14' 42.8388" N 211 ° 08' 16.5536" E 70° 14' 45.7144' N 211 ° 08' 11,3902" E 70° 14'39,8702" N 211°07'41.8116" E 70° 14' 42.3533" N 211 ° 07' 11.2366" E 70° 14' 51.2570' N 211 ° 07' 04,7694" E 70° 15' 05.3573" N 211 ° 07' 08.9971' E 70° 15'08.3816' N 211°07'24.1152" E 5962.06 S 6306.58 W 5942727.00 N 638279.00 E 70° 15' 04.5138" N 211° 07' 02.2603" E 6794.43 $ 6243.55 W 5941896.00 N 638358.00 E 70° 14' 58.3274" N 211 o 07' 04.1140" E 7363.29 S 6516.51 W 5941322.00 N 638096.00 E 70° 14' 50.7299" N 211 o 06' 56.1896" E 8235.39 S 6259.20 W 5940455.00 N 638370.00 E 70° 14' 42.1543" N 211° 07' 03.6935" E 8688.72 S 4787.63 W 5940030.00 N 639850.00 E 70° 14' 37.7061" N 211° 07' 46.4913" E 8206.66 S 3848.21 W Alaska Drilling & Wells PBU_WOA Y Pad Target Target Shape Type Point Current Target Point Geological Point Geological Point Geological Point Geological Point Geological 12 January, 2001 - 14:48 Page 10 of 11 DrillQuest 2.00.06 Sperry-Sun Drilling Services Proposal Report for Y-20A WPS- Y-20A Wp02 North Slope Alaska Target Name Mean Sea Level/Global Coordinates: Geographical Coordinates: Target Entry Coordinates TVD Northings Fastings (ft) (ft) (ft) 8978.00 5940530.00 N 640780.00 E 70° 14' 42.4529' N 211° 08' 13.7985" E Alaska Drilling & Wells PBU_WOA Y Pad ~r~t Ta~et Sha~ Type DrillQuest 2.00.06 12 January, 2001- 14:48 Page 11 of 11 Sperry-Sun Anticollision Report Company: BP Amoco Field: PrudhoeBay Reference Site: PBY Pad Reference Well: Y-20 Reference Wellpath: Plan Y-20A hie: 01/12/2001 Time: 16:56:55 Co-or~lmte(N~) Refeream: Well: Y-20, True North V~ (TVD) Reference: Y-20A plan 79.8 Db: Oracle GLOBAL SCAN APPLIED: All wellpaths within 200% 100/1000 of reference. There are 'I'BB~l~mMIs in this fBldh: Y-20A WP02 & NOT PLANNED PR(D, Interpolation Method: MD Interval: 100.0000 ff Error Model: ISCWSA Ellipse Depth Range: 12220.0000 to 18209.9000 ft Scan Method: Trav Cylinder North Maximum Radinst0000.0000 ft Error Surface: Ellipse + Casing Casing Points MD TVD Diameter ' Hole Size .Name , ft ft in .. in . . 9062.1253 4.5000 6.1200 Case2 Plan: Y-20A WP02 Date Composed: 01/10/2001 Version: 1 Principal: Yes Tied-to: From: Definitive Path Summary < ................. J .... Offset Wellpath ....... ?-,.r?=,,.,:~" ....... ' .' '. 'Re~erenee' Offset... Ctr-Ctr No-Go' . Allowable..." ' ..... ·. Site' ' .. Well . · ...'. '.. '.welll~ath" ~ . " MD~ ' ' .'MD ~i!...Distance'Areal .Deviation. ' Warning · .. ... . . .' · ..' " · ' · ::i' 'i::'.".".' ''."':'. 'i. · .... 'fi:.'...'": '.ft.': .'... '~:ff~."..'...'fi: ..: '.' ft,.:.' ".."..' : · . .. . :... .. . · ... PB Y Pad Y-09APB1 Y-09APB1 V2 PB Y Pad Y-09A Y-09A V2 PB Y Pad Y-09 Y-09 V1 PB Y Pad Y-10 Y-10 V1 PB Y Pad Y-1 lA Y-1 lA V1 PB Y Pad Y-11BPB1 Y-11BPB1 V2 PB Y Pad Y-11B Y-1 lB V1 PB Y Pad Y-11 Y-11 V1 PB Y Pad Y-12 Y-12 V1 PB Y Pad Y-13 Y-13 V1 PB Y Pad Y-19 Y-19 V1 PB Y Pad Y-20 Y-20 V2 PB Y Pad Y-21A Y-21A V1 PB Y Pad Y-21 Y-21 V1 PB Y Pad Y-22A Y-22A V3 Plan: Definit PB Y Pad Y-22 Y-22 V1 PB Y Pad Y-24 Y-24 V2 PB Y Pad Y-25 Y-25 V1 PB Y Pad Y-26 Y-26 V1 PB Y Pad Y-27 Y-27 V1 PB Y Pad Y-29A Y-29A V2 PB Y Pad Y-29 Y-29 V1 PB Y Pad Y-37 Y-37 V1 RECEIVED 12290.309512300.0000 JAN 8 6; 2001 Alaska Oil & Gas Cons, Commission Anchorage 5.1476208.7498 -202.2206 17720.845813500.00001020.5694406.3575 629.4567 12762.512112600.00001552.1606402.53621160.9029 FAIL: Major Risk Pass: Major Risk Pass: Major Risk Site: PB Y Pad Well: Y-20 Rule Assigned: Major Risk Wellpath: Y-20 V2 Inter-site Error: 0.0000 ff ':" ". R~fe'renee ".: .'. ':' ; :::" ':Offset. "'i ".i!. '. ;. '...":~MaJ°r.Axis':'.':; ;':.': "..'.. ':::'.;'.. :.;': 'ii.:!.i:.: :i .":~ ! :.:i':'. :: '"".:i .'Ctr, ctr: =No'.Go" . 'Allowable''. .: :.. 'i.......' .' ':...... · :MD;..' ii".. ! TVD.' ... :: '. MD '." .'. :: .TVD ".. i' .!:g~g'. '...Offset.." .T/O+AZI' TFO~HS ':Casing' :'.': ~ta~e .:Area. '... ": Deviation ': ".warning. :'..' .'." . .ft,. ::... '.....~t"." ': '. '~t" ....,...:': :.~::.'~' .::...::.:~t,..'!:..:: ":':'ft,' .... :':i'~', :: '",/~;',i'.,.'"':!:' in'..:.::,'."!:..:.~ :i:::,i:~t. ',.:,' .':,.../::ift': .,'... · '~'. :.'.. '~..:'. '. "'.'..... · .:: .. 8909.128112300.00008917.5444 0.0000 58.4080 157.30 279.10 8934.292412400.0000 8939.9600 -0.2315 56.3391 164.50 277.06 8959.087512500.0000 8957.9721 -0.2239 56.4180 167.56 280.13 8983.726912600.0000 8974.0593 -0.2131 56.5219 169.50 282.06 9010.054612700.0000 8989.3430 -0.4588 57.5657 168.13 284.07 9039.764912800.00008999.9743 1.6644 59.9176 154.39 290.63 9053.295912900.0000 9005.0159 -1.3515 56.9657 143.08 298.37 9052.192413000.0000 9004.6103 -6.0828 52.2511 145.36 315.55 9047.174213100.0000 9002.7277-10.3345 48.0022 190.47 11.68 9043.453613200.0000 9000.6258-13.2053 45.1295 230.89 59.80 9039.755113300.0000 8998.8533-13.4083 44.9391 244.09 73.82 9035.970613400.0000 8998.0347-13.3026 45.0549 249.84 79.57 9032.086413500.0000 8999.7945-13.1844 45.1753 253.28 83.01 9028.160713600.0000 9003.5209-13.0499 45.3092 255.66 85.39 9024.130913700.0000 9007.1317-12.9024 45.4682 257.27 87.00 9.6250 5.1476208.7498 -202.2206 FAIL 9.6250 29.783~08.1164 - 177.7520 FAIL 9.6250 60.7824208.2369 -146.0616 FAIL 9.6250 93.5526208.3375 - 112.7003 FAIL 4.5000 126.970~E08.1745 -78.2975 FAIL 4.5000 140.613cP18.1747 -69.9416 FAIL 4.5000 121.043PP08.0927 -72.1455 FAIL 4.5000 79.6659208.6539 -81.3870 FAIL 4.5000 54.9025209.1552 -106.8451 FAIL 4.5000 103.692CE09.0793 -105.3624 FAIL 4.5000 180.2564209.4359 -27.6030 FAIL 4.5000 261.016PP09.7687 55.1759 Pass 4.5000 341.710CE09.7797 137.7352 Pass 4.5000 422.4368210.0730 219.5999 Pass 4.5000 502.594(E10.1033 300.7693 Pass ;RAM Sperry-Sun Anticomsion Report Company: BP Amoco Date: 01/12/2001 , Time: 16:56:55 Field: Prudhoe Bay Reference Site: PB Y Pad CO-Ordim~te(NE) Refereace: Welk Y,20, True North Refereaee Well: Y-20 Vertiml (TVD) Reference: Y-20A plan 79.8 Reference Wellpath: Plan Y-20A Page: 2 Db: Oracle Site: PB Y Pad Well: Y-20 Rule Assigned: Major Risk Wellpath: Y-20 V2 Inter-Site Error: 0.0000 Reference Offset Semi'Major Axis Ctr-Ctr No-Go Allowable MD TVD MD TVD. Ref Offset TFO+AZ! TFo-HS Casing Distance Area l~viation ft ft ft ft ft ft deg · in , ft ft ft Warning 9020,031313800.0000 9010,3497-12,7298 45.6528 258,41 88,14 6.0000 582.3428210,4885 380,8121 Pass 9017.321613866,0000 9012,4458-12.6140 45,6992 258.99 88,73 635,0358~22,0461 420,9746 Pass Site: PB Y Pad Well: Y-24 Rule Assigned: Major Risk Wellpath: Y-24 V2 Inter-Site Error: 0.0000 ft , :i': Referent .... ,:, ,', ~ ~i ,::,~t,,,,:~ ,~:: ~::;.::h:,:!',Semi~Majol, AXis :,~:~,~,~,:~::?:::~,:,,~::,: 'ii,~:¥:,,::~ ~,~5: ,:~: ;: :~t,r~Ctr :::: No-Go.,'7~:, :: AllOwable': ::: ':::::,,, :i,:,, :,,,~, ::'i' :,:' ?::MD · TVD . MD .' ' TVD .. :: Ref 'OffSet .. TFO~AZI' TFO-HS Casing: . DLStam~e Area ' Deviation: Warning ' · ft .ft ff ' ..:i ft:... '. :. ,ff' '...,..deg, '.. '.deg... 'in.. ".. "iff:'.'" ' 'ff' ..' .... ff.'. '.. · '. 9061,388612700.0000 8564,2497 63,3019 54,2902 355,21 294,03 9058,107012800,0000 8637,5151 63,0464 54.7385 352.24 291,06 9054,871012900,0000 8711,5667 62,8109 55,1796 348,99 287,82 9051,665413000,0000 8786,2612 62,5865 55,6166 345,46 264,28 9048.429913100,0000 8860,7023 62.3764 56,0592 341,69 280,51 14 9045,223613200,0000 8936,0811 62,1754 58,4965 337,63 276,45 9042,115413300,0000 9013,4372 61,9999 56,9179 333,27 272.09 9039,011013400,0000 9091,0109 61,8323 57,3395 328,77 267,59 9035,890913500,0000 9168,4722 61,6776 57,7645 324,21 263,04 9034,330813550,0000 9207.2029 61,6033 57.9772 321,93 260,75 1244,5327402,2290 891,4222 Pass 1197,1041402.7955 837.0332 Pass 1153,1829403,0433 786,2280 Pass 1113,8120403,6698 740,2895 Pass 1079,8749404.0303 700,4023 Pass 1053,2481404,4030 668,7079 Pass 1035,0528405,1302 646,6533 Pass 1024,1742405,5568 633.5339 Pass 1020,5694406,3575 629,4567 Pass 1021,1950406,4427 630,5374 Pass Site: PB Y Pad Well: Y-27 Rule Assigned: Major Risk Wellpath: Y-27 V1 Inter-Site Error: 0.0000 ft 8959,051611900,0000 8199,228056,6031 57,3926 308,65 61,21 8983,138612000,00008260,1257 56,7063 58,0602 309,75 62.32 9003,93832100,0000 8322,2041 56,8183 58,7283 310,95 63,51 9009,784012200,0000 8385,4281 57,7229 59,8182 309,89 65,68 9015.813~2300,00006450,1302 58.5416 60.7574 308.80 68.09 9021,468012400,0000 8515,4337 59,1886 61,5124 307.83 70,59 9026,727312500,0000 8581,0999 59,6632 62,0598 306,95 73,15 9029,204612600,0000 8646,6131 59,8148 62,6028 307,51 75,43 9031,571512700,0000 8712,6147 59,9661 63,0848 308,15 77,78 9035,982512800,0000 8779.1304 60,0992 63.2317 307,45 80,48 9039,943612900,0000 8645,8351 60,0661 63,1755 306,72 83,13 9039,943613000,00008912,802060,0661 63,7934 308,34 85,25 9043,44033100,0000 8980,9057 59,8718 63,4757 308,08 87,84 9045,037B3200,0000 9050,1353 59,6943 63,5124 308,69 90,16 9046.460113300,0000 9119,2500 59,5229 63,5308 309,27 92,37 9047,890913400,0000 9188,2041 59,2649 63,4213 309,59 94,50 9048,990~3500,0000 9257,1408 59,0277 63,3599 310,06 96,49 9048,990~3556,49009296,0831 59,0277 63,6673 311.06 97.49 1635,1631380,28101288,3464 Pass 1613,0018382,94371262.0391 Pass 1591.4440385,54561236,1983 Pass 1573,1783390,81421209,3523 Pass 1559,9034395,20651187,6990 Pass 1551,9061398,59641172,1213 Pass 1649,1074400,83791162,8039 Pass 1552,1606402,53621160,9029 Pass 1561,8901404,04401166,1122 Pass 1577,9681404,03901178,6781 Pass 1600,9368403,03351199,6429 Pass 1630,3352404,84921226,1593 Pass 1664,4099404,17901260.4435 Pass 1702,7379404,14261298,6042 Pass 1745,7405404,04141342,0805 Pass 1793,0924403,29451391,1881 Pass 1844,2192402,70931444,2737 Pass 1874.7390403.63051474.3285 Pass RECEIVED AJagk2 Oil R, P~9_~ ConE. Comn;icc!cn Anchorage WIlL D~TAILS Name +N/-S +E/-W Notthieg Eas~g La~t~e Longitude Sbt Y-203.~1.8443-.~273,0941 .5948F~d~.00~0 614470.0~D 70:16'03.298N 148~49'54,262W ANTI-COLLISION SE'ITINGS Interpolation Method'.MD Interval: 100.0000 Del:~h Range Rom: 12220.0000To: 182_09.9000 Maximum Range: 5000.0000 Reference: Plan: Y-20A WP02 SURVEy PROGRAM Deplh Fm Depth To Sur,,'e'y/Plan 19920.0~018209.9000 Planned: Y-20A ~ VI Tool ~243 From Colottr To MD 0 ' 500 500 1000 1000 1500 1500 2500 2500 3500 3500 5000 5000 7500 7500 10000 1000 . '-1333 ~ From Colour To MD 0 500 5OO 1000 1000 1500 1500 250O 25OO 3500 3500 5000 5000 7500 7500 10000 10000 .... 50000 90 Travelling Cylinder Azimuth (TFO+AZI) [deg] vs Centre to Centre Separation [ 10043 --243 RECEIVED JAN 2 6 ZOO/ Alaska Oil & Gas Cons, Commission Anchorage Travelling Cylinder Azimuth (TFO+AZI) [deg] vs Centre to Centre Separation [ 100ft/in] WI~IJ.PATll Lq ~AII,S Pbn Y-20A Paten! We~a~: T~e on MD:. 1 'rs20.0030 Ref. Dalm~t Y-20A plaa V.~n ' ' ~i~D ~ Y~BI ~APBI~ ~rR~k Y.OgA (Y..09^). Major Risk Y-09 (Y.09), Ma~t Risk Y-10 (Y-10). Major Risk Y-I I A (Y-I I A), Major Risk Y-IIBPBI (Y-IIBPBI), Major Risk Y-lIB(Y-lIB), Major Risk Y-II (Y-I I). Major Rhk Y-12 (Y- 12). Major Risk Y-13 fY- I.I). Major Risk Y-19 (Y-19). Major Risk Y-20 (Y-20), NOERRORS Y-21A (Y-21A). Major Risk Y-21 (y-21), Major Risk Y-.'r2A (Y-22^), Major Rbk Y-2~ {Y-22). Major Rhk Y-24 (Y-24). Major Risk Y-25 (y.2.~ Ma)n Risk Y.26 (Y.26). Major Risk Y-27 (Y-2'/), Major Risk Y-29A (Y-29A),Major Ri~k Y-29 {Y-29L Major Risk Y-}7 {Y-3'/), Major Risk Pan Y-20A Y-2OA WPO2 Plan: Y.20A WPO2 tY-20'Ptm Y-2OA) Crealed By: Peach I~dlztvsm Dale: 01/lOr~ ~x~[d: Dale: Red,wed: Dale: SECTION I~TA~S Sec MD loc Azi TVD +N/-S +E/-W II'rr~0-00~O ~ls! -.- -! 8889.4582 -5457.5870-5681.01-11 12260J]~00 · sJJl · · i! 89~0.8585 -5481,1683 -5711.2304 .~ 1~'464..6800 :-='I I I-al 8928.9662 -5530.0352 -5'/99.1853 4 1265Zfi~0 ."- II I l-Il 9~3~9.'~7 -5636.4712 "6055.372=7 5 13~6.1100" .I,I e. sial 9051.8341 -5961.90~9 -6306.?592 1~19.(:~00 .... ,sD ,-, =.eD 9043.0529 ,.6~)4...n692 -6305.9173 136T2_.4.~0 .... aD .'~-41 9011.79~ -6539.7-e~6 1~930.130~----as! ,,e. sad 8993.8258 -679-1_'~:61 ~243.7236 9 14071.47~0- '-%-! ,--D898-L:1819 ~a923.5798 ~a299.0996 I0 14362.5300 ·-": .D ~ - nD 8965.9T/9 -717~.-'1695 -6445.4840 II 14565.2500- sss~ ., ssD g964.82tSg -7763.1387 -6516A931 12 14786.59ff}- -, .D '.. v-aD 8~fi.6-169 -7582,0162 -6517.965A 13 15105.4600-! 1, .D --. ,~-aD 90.~2.0444 -7892_..12_17 -6460~8~0 14 15512.0200 - a~a , .. assa 9054.~ -82352373 -62593788 15 15730.9.2500-- ' .sa -,..-~a, SOt6.0614 -8-'MO_e~42 -6~69.9733 16 16'/82.44~0 :- - ~sa I..-~o 8999.-131'/ -g~L:ll~4 -5071~9096 17 17069.56~0~ - sa,e ,rills 9~00.8377 -868R5611 -1787.8102 18 172.57.50~0 n - ~a ,aa 9011.0355 -86.'~x4726 19 18129.9(~O n - -, ' ~, ~O57.8338 -82O65O2.7 20 18209.~(~0 '.- -' -' ' '.a~ 9~62.1~3 -8167.9910 -3778.392-1 DL~ 1'FaceV,~: Tars~ 0,00 0.0~0733&-1152 1 I.'96 74.9342 7372.50,~ 12.00 8&212~ 7,L~3.7821 0.~O 0.0000 76.~.9411 14.00 271.9674 8178.8986 0.00 0.(3000 85:~.8952 10.00 89.2286 871r'/.8306 I0.00 90_~603 8928.4445 0.~0 0.~000 92-17.60g/ I0.O0 .~ql.l(~M 9~.18.7418 I0.00 ~5.5501 9617,92~7 0,00 O.C~O0 9~75.3426 I0.1~O 2~2.8163 10102.2~5 I0.00 271.,8184 10118.3271 0.~1 0.(~0~30 9996.4435 I0.00 2.~.85~3 9895.83~6 O.00 O.0{~O 906.t.910R 0.(30 0.00~0 ,q9993735 Y-20A Lost circulation. . Subject: Y-20A Lost circulation. Date: Tue, 6 Feb 2001 19:54:05 -0600 From: "Sherritt, Allen" <SherriJA@BP.com> To: "Tom Maunder (E-mail)" <Tom_Maunder@admin.state.ak.us> Tom, Sorry for the delay in getting this to you .... You shouldn't have called so early in the morning. The coffee had not yet kicked in. Anyway, please find attached the Y-20A Lost Circulation Flow Chart. The two boxes you can't read are ..... "Are losses fault related?" Something in the conversion to Power Point. As you can see from the chart, Iow to medium losses will be treated with our conventional methods, Barafibre and Baracarb LCM pills. Additionally, we will utilize Ml's Form-A-Set AK pill on severe losses. The Coil Tubing Drilling operation has had very good success reducing/stopping significant lost circulation events with Ml's pill. If the bottom completely drops out, we have available Y-11B, (30' away) and Y-10 (-,120' away) as sources for produced water. As far as the fault classification. I have inserted the "Risk Discussion" for Y-20A, which outlines the logic behind our directional approach for the target polygon. To access bypassed oil targets, Y-20A may potentially cross 12 faults and will maximize the vertical section exposed. With the exception of faults 4, 5, 11, and 12 (see seismic continuity base map, SOR, and further discussion below), the well path crosses the faults in as optimal an orientation as possible. The risk of lost circulation is mitigated by crossing these faults where they are perpendicular to regional stresses, near TSAD to take advantage of additional clay smearing in the fault plane from the overlying Shublik formation, and away from fault intersections or tip outs. The well path currently passes near fault tip out zones associated with faults 4 and 5. Geosteering to the east within the target polygon as the well approaches fault 4 will allow crossing fault 4 at a considerably cleaner break and should completely bypass the tip out zone of fault 5 before reconnecting with the well plan north of crossing fault 6. The orientation of possible faults 11 and 12 favors conductivity and lost circulation because they are both parallel to the major regional stress and are therefore likely to be gapped open. To mitigate this risk, consideration will first be given to stopping short if economic reserves have been observed. Evidence for either of these actually being faults is poor based on the dim discontinuities observed on the seismic continuity base map. Nevertheless, if drilling to TD is deemed necessary, geosteering to the north side of the polygon may be employed to optimize placement of the well and provide standoff from both of these faults. Considering the number of faults potentially to be crossed, and the structural complexity of the area, the risk of lost circulation is assessed as 7 on a scale of 1-10. Bottom line we are optimizing our fault drilling by, avoiding where practical, steering away from fault tip outs, crossing perpendicular to the I of 2 2/9/01 10:05 AM Y-20A Lost circulation. fault plane and avoiding faults Which are parallel to the maximum regional stresses. The "continuity data" referred to above is a method by which the seismic data is processed through an algorithm in attempt to fine tune the resolution of the seismic data. Half of the faults designated here probably would not have been identified as possible faults back in 1998. Additionally, 9 of the 12 faults are 10' - 15' throw, which is right at the edge of seismic data resolution, (with 5 to 6 of them being classified as "possible" faults.) I cannot do justice to the process and theory behind the "Continuity" data in just a few words. If you are interested in more details about what the G&G teams are doing, I can speak with Stuart Montague about providing you with a larger more concise overview. <<lost circ.ppt>> Thanks, Allen Sherritt BP Alaska Drilling and Wells * (907) 564-5204 (Direct) * (907) 240-8070 (Mobile) * sherrija@bp.com * (907) 564-4040 (Fax) * MB 6-3/681B r ' Name: lost circ.ppt ~lost circ. ppt Type: Microsoft PowerPoint Show (application/vnd.ms-powerpoint) Encoding: base64 2 of 2 2/9/01 10:05 AM Losses Lost Circulation Flow Chart: Y-20A (see Reoommended Lost Circulation Prooedures for thorough disoussion) Seepage Partial 10-20 bbllhr static 20-60 bbl/hr static ¥ a~ ~lh d¶r ,011SaXc~rer ,Be ~°~ i ~ ~ noted below. Treat Active System with I 5 sx/hr Barofibre Y Y Pump 50 ppb LCM pill (volume will be based upon loss rate): 10 ppb Baroseal (F) 10 ppb Baroseal (M) 20 ppb Barofibre 10 ppb OM seal I Pump MI FORM-A-SET pill (volume will be based upon loss rateJ. Clean-out es required to drill ahead. A second pill may be required based upon suc- cess I impact of first. l If dynamic loss is still >30 bbllhr a decision will be m ado if additional LCM treatments are to be made. ITreat Active System with 10 sxlhr Barofibre Pump 60 ppb LCM pill (volume will be based upon I~ss rate): 10 ppb Berose,l (F) 10 ppb Baroseal (M) 20 ppb Barofibre 10 ppb OM seal 10 ppb Walnut {Fl If dynamic loss is still >30 bbl/hr a decision will be made if addition- al LCM treatments are to be made. tDrill across fault as noted below, i I Pump LCM pJllthrough the bit [volumewglbe based upon loss rate): t0 ppb Baracarb [25J 10 ppb BeT, acarb (150) 10 ppb Baracarb (600) I If losses continue Pump LCM pig through the bit lvolume will be based on loss rate): 20-25 ppb Baroseei (F) If losses continue Pump LCM pi# through the PBL Sub (volume wiilbe based on loss rate): 80- 100 ppb OM Sesl Pump MI FO RM.A-SET pill lvolume will be based upon loss rate). Clean-out as required to drill ahead. A second pill may be requked based upon suc. cessi impact of first. If dynamic loss is still >30 bbl/hr a decision will be made to proceed with additional LCM treatments orto POOH for 'Dumb' BHA and DOB2C pill. Severe 60.200 bbl/hr static I Drill across fault as noted below. I Pump conventional LCM pigs [Beracarb, Barosenl, and OM Seal as described in the Fault related Partial losses tree to the faR. Pump MI FORM-h-~I~T pill Ivolume wilt be based upon loss rate). Clean-out ss required to drift ahead. A sec- ond pill may be required based upon success I impact of first. Pump MI FORM.A.SET pill to allow POH (volume will be based upon losses and suc- cass of initial pills) I Plan to pump 30 to 50 bbl DOB2C pill as per Dowell recommendation when back on bottom. Total >200 bbl/hr , Pump MI FORM.A.SET pill to allow POH (volume will be based upon loss rate). I IPOH, PU Dumb BHA I I Plan to pump 50 to 80 bbl DOB2C pill as per Dowell recommendation when back on bottom. Plan to pump a second 50 to 80 bbl DOB2C pill if massive losses continue. Note: If losses are fault related, ddll across fault I to 1.5 times the length of the throw before treating losses. Estimated fault throws are listed in the well plan. Form-A-Set use is planned for the first fault crossing if losses are encountered. Its use on subsequent losses will depend on its performance during the first use. O01809661 VENDOR ALASKAO I LA O0 DATE INVOICE / CREDIT MEMO DESCRIPTION GROSS DISCOUNT NET 122100 CK122100F 100. oo i00. O0 PYMT ;OMMENTS: Pe~ nit To Dmill HANDL:[NQ INST: S/H - Te~ie Hub~;le X4628 · HE AWACHED CHECK IS IN PAYME~ FOR ~MS DE~RIBED ABOV~ ,1 OO. OO 1 OO. OO :FiRST'~ATIO~L. BANI~ ~F AS~I. ~AND "":'::: ' '" .... ~i~IATE:, b~ ".~: ~' .:' :: ':' ',:, '. ,:::M ::,,,::' N~ION~.:~I~ ~K .... ':;'h ,: :: .::.:..:':.::...::..? ~EEVE[~D, O'RiO ,' .'. ",. :" "::::::';':::' ".:?::;;~:3~'~::~.::',:. .:'~' ..':?' ....~..,. . PAY oNE iHu~:E~!ii': &';~:,i~/1 O0 '~' ,'::~'~: DOLLAR ".~:~, .......... ~:~:' .:~!i:;:;:'- .:! . DATE I:'''''''~'~''' 12/2e/oo I'":" $~.oo. ooJ · :i;:: :i :: "; ; i: NQ.'..T':iVA.LID:::.,.::..~. AFTER 120 DAYS ii '?.' AK 99,501 ANCHORAQE ii" &8oqr=r==ll. m-'om., , , WELL PERMIT CHECKLIST FIELD & POOL ADMINISTRATION APPR DATE I COMPANY. .~F ' WELL NAME y-Z-~/~ PRO'GRAM: exp dev '/"redrll' v/ aery INIT CLASS ~L./ ~'~_.,~//---- ENGINEERING 1. Permit fee attached. 2. Lease number approl:;d;at;~." :~.' 3. Unique well name and number .................. 4. Well located in a defined pool .................. 5. Well located proper distance from ddlling 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 canbe issued without administrative approval ...... 13. Can permit be approved before 15-day wait ........... 14. Conductor string provided ................... 15. Surface casing protects all known USDWs ........... 16. CMT vol adequate to circulate on conductor & surf csg ..... wellbore sag ann. disposal para req GEOL AREA _~?[~) UNIT# ~)//~_~TZ) ON/OFF SHORE N VU) GEOLOGY APPR DATE 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. CMT vol adequate to tie-in long string to surf csg ........ CMT will cover all known productive horizons. Casing designs adequate for C, T, B & permafrost. Adequate tankage or reserve pit ........... ~ ~ ~ ~ ~ NN ~:~,.~%-~\N:;; ~X'[' . If a re-drill, has a 10-403 for abandonment been approved... Adequate weilbore separation proposed ....... ~ ...... ¢,.~,~,,.'~-,,~*~ .,.,~.\\ c~t-~ %~. If diverter required, does it meet regulations .......... Drilling .fluid program schematic & equip list adequate ..... DOPEs, do they meet regulation ................ ~ N . c,, ~ ' ' DOPE press rating appropriate; test to '~(,__~ psig. ~ N ~,~,~k~::' ~.~'~w~,~.'~-~ ~ ~(~ ~% ~, ' Choke manifold complies w/APl RP-53 (May 84) ......... Work will occur without operation shutdown...... ..... Is presence of H2S gas probable ................. Y (~)' Permit can be issued w/o hydrogen sulfide measures ...... ..y~ ~.: Z..~ ,,~z.<~,,,~_~ ,/'fifi-?,,,.~ ,~z-5 ~.. ~~, ~/'..~( ,,~--c.~~~ ~'-,-,-, Data presented on potential overpressure zones ....... ("Y~_~ ¥',.. Seismic analysis of shallow gas zones ............. .,~ Seabed condition survey (if off-shore) . . ._,~ r~ Y N -~, '/~,~-J' ~7, Z-. A, 'Z,'¢' ,:, -~-,,\ , ~ ~ ~/ ' Contact name/phone for weekly progr;s; ;e~ort;; ~'e;~/7 only] Y , t..: /~ '.: . ANNULAR DISPOSAL35. With proper cementing records, this plan (A) will contain waste in a suitable receiving zonei ....... Y N APPR DATE (B) will not contaminate freshwater; or cause drilling waste... Y N to surface; (C) will not impair mechanical integrity of the well used for disposal; Y N (D) will not damage producing formation or impair recovery from a Y N pool; and (E). will not circumvent 20 AAC 25.252 or 20 AAC 25.412. Y. N GEOLOGY: ENGINEERING: UIC/Annular COMMISSION: CO TS~ Comments/Instructions: O Z O c:\msoffice\wordian\diana\checklist (rev. 11/01//00) 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 simptify finding information, informati;3n 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. $Derry-Sun Drilling Services LIS Scan Utilisy SRevision: 3 $ kzsLib $Revision: 4 S Tue Jun 11 15:10:45 2002 Reel Header Service name ............. LISTPE Date ..................... 02/06/1! Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Previous Reel Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Tape Header Service name ............. LISTPE Date ..................... 02/06/11 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Previous Tape Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services 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: # SURFACE LOCATION SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: # WELL CASING RECORD MWD RUN 4 AK-MM-10057 R. KRELL R. BORDES Y-20A 500292158701 BP Exploration (Alaska), Inc. Sperry Sun Il-JUN-02 MWD RUN 5 AK-MM-10057 M. HANIK J. RALL 33 llN 13E 1440 347 .00 78.25 49.75 OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) lST STRING 9.625 11449.0 2ND STRING 8.500 7.000 12216.0 3RD STRING PRODUCTION STRING REMARKS: 1. ALL DEPTHS ARE MEASURED DEPTHS (MD) UNLESS OTHERWISE STATED. MWD RUN 1 IS USED TO SET A WHIPSTOCK AND MILL WINDOW AND IS NOT PRESENTED. MWE RUN 2 IS DIREC?-2I<AL WiTH DUAL GANLU~A .RAY ~DGR' UTILiZiNG GEIGER MUELLER TUBE DETECT3RS ANT ELECTRO¥~AGNETiC WAVE RESISTIVITY PHASE 4 (EWR4". NO DRZLLiX3 WAS .~--~.'OF~.'.ED ON THiS RUN. MWD RUN 3 IS USED TS SET A WHIPSTOCK AND MILL WINDOW AND iS NOT PRESENTED. MWD RUNS 4 AND 5 ARE DiRECTiONAL WITH DUAL GAb94A RAY iDGR] UTILIZING GEIGER MUELLER TUBE DETECTORS AND ELECTROMAGNETIC WAVE RESISTIVITY PHASE 4 (EWR4). A MADPASS FOR GAM/V~A RAY (SGRC) WAS PERFORMED WHILE TRIPPING IN THE HOLE ON MWD RUN 2 FROM 11336' MD, 8396' TVD TO 11449' MD, 8463' TVD. THIS DATA WAS APPENDED TO THE TOP OF MWD RUN 4. 7. GAMMA RAY (SGRC) FROM 11336' MD, 8396' TVD TO 11449' .MD, 8463' TVD IS LOGGED BEHIND CASING. 8. GAM~J~ RAY (SGRC) IS LOGGED BEHIND CASING FROM 12180' MD, 8873' TVD TO 12216' MD, 8894' TVD. RESISTIVITY DATA (EWR4) IS LOGGED BEHIND CASING FROM 12173' MD, 8869' TVD 12216' MD, 8894' TVD. 9. DEPTH SHIFTING / CORRECTION WAIVED PER THE EMAIL FROM .?'."~iii'D. SCNORR FOR A. FRANKENBERG OF 10/15/01. MWD cONSIDERED PDC. THIS WELL KICKS OFF FROM Y-20 AT 11449' MD, 8463' TVD (TOP OF WHIPSTOCK). ALL MWD LOG AND HEADER DATA RETAINS THE ORIGINAL DRILLER'S DEPTH REFERENCE 10. MWD RUNS 2 - 5 REPRESENT WELL Y-20A WITH API % 50-029-21587-01. THIS WELL REACHED A TOTAL DEPTH OF 17514' MD, 9069' TVD. SROP = SMOOTHED RATE OF PENETRATION SGRC = SMOOTHED GAMMA RAY COMBINED SEXP = SMOOTHED PHASE SHIFT DERIVED RESISTIVITY ( EXTRA SHALLOW SPACING SESP = SMOOTHED PHASE SHIFT DERIVED RESISTIVITY ( SHALLOW SPACING ) SEMP = SMOOTHED PHASE SHIFT DERIVED RESISTIVITY ( MEDIUM SPACING ) SEDP = SMOOTHED PHASE SHIFT DERIVED RESISTIVITY ( DEEP SPACING ) SFXE = SMOOTHED FORMATION EXPOSURE TIME $ File Header Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/06/11 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 S U.~I,~A RY PBU TOOL CODE RPE ?,PM RPS FET ROP $ BASELINE CURVE FOR SHIFTS: START DEPTH 11336 5 11440 0 11440 C 11440 0 11440 C 11449 5 11479 5 CURVE SHIFT DATA (MEASURED DEPTH} STC.? Z'EPTH i74&9.~ 17456.~ 174~6.[ 17456.0 17~14.3 EQUIVALENT UNSHiFTED DEPTH BASELINE DEPTH $ MERGED DATA SOURCE PBU TOOL CODE BIT RUN NO MERGE TOP MWD 4 11336.5 MWD 5 12216.5 $ # REMARKS: MERGED MAIN PASS. $ 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 Depth Units .......... ' ............. Datum Specification Block sub-type...0 ~{ERGE BASE 12216.0 17514.0 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 API 4 1 68 8 3 RPX MWD OHMM 4 1 68 12 4 RPS MWD OHMM 4 1 68 16 5 RPM MWD OHMM 4 1 68 20 6 RPD MWD OHMM 4 1 68 24 7 FET MWD HR 4 1 68 28 8 Name Service Unit Min Max Mean Nsam DEPT FT 11336.5 17514 14425.3 12356 ROP MWD FT/H 0.45 791.55 71.5852 12070 GR MWD API 15.97 627.55 60.024 12227 RPX MWD OHMM 0.23 2000 31.4119 12033 RPS MWD OHMM 0.46 2000 15.9368 12033 RPM MWD OHMM 0.74 2000 23.6398 12033 RPD MWD OHMM. 0.28 2000 23.1662 12033 FET MWD HR 0.39 79.71 2.97475 12014 First Reading For Entire File .......... 11336.5 Last Reading For Entire File ........... 17514 File Trailer Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/06/11 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.002 First Reading 11336.5 11479.5 11336.5 11440 11440 11440 11440 11449.5 Last Reading 17514 17514 17449.5 17456 17456 17456 17456 17456 Phvsica! EOF File Header Service name ............. Service Sub Level Name... Version Number ........... i.C.0 Date of Generanion ....... 02/06/ii Maximum. Physical Record..65535 File True ................ LC .. Previous Tile Name ....... STSLiB.001 Comment Record FILE HEADER FILE NUMBER: 2 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 11336.5 12180.0 RPX 11440.0 12172.5 RPD 11440.0 12172.5 R?S 11440.0 12172.5 RPM 11440.0 12172.5 FET 11449.5 12172.5 ROP 11479.5 12216.0 $ LOG HEADER DATA DATE LOGGED: 06-MAR-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite 4.05.5 DOWNHOLE SOFTWARE'VERSION: 65,44 DATA TYPE (MEMORy OR REAL-TIME): Memory TD DRILLER (FT): 12216.0 TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: 53.6 MAXIMUM ANGLE: 57.9 # TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY P01886HWRG6 EWR4 ELECTROMAG. RESIS. 4 P01886HWRG6 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): 8.500 DRILLER'S CASING DEPTH (FT): 12216.0 # BOREHOLE CONDITIONS MUD TYPE: LSND HT MUD DENSITY (LB/G): 11.30 MUD VISCOSITY S): 46.0 MUD PH: 9.2 MUD CHLORIDES PPM): 1400 FLUID LOSS (C3 : 2.5 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF} MUD AT MEASURED TEMPERATURE (MT): 2.400 70.0 MUD AT MAX CIRCULATING TERMPERATURE: 1.060 167.0 MUD FILTRATE AT MT: 1.400 70.0 MUD CAKE AT MT: 1.500 70.0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFE (IN): EWR FREQUENCY (HZ): RE~RKS: Data Format SPecification Record Data Record Type .................. 3 Data Specification Block Type ..... ~ Logging Direction ................. Down Optical log depth units ........... Feet Data Keference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...C Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 ! 68 ROP MWD040 FT/H 4 1 68 GR MWD040 API 4 1 68 RPX MWD040 OHMM 4 1 68 RPS MWD040 OHMM 4 i 68 RPM MWD040 OHMM 4 1 68 RPD MWD040 OHMM 4 1 68 FET MWD040 HR 4 1 68 0 1 4 2 8 3 12 4 16 5 20 6 24 7 28 8 Name Service Unit Min Max DEPT FT 11336.5 12216 RO? MWD040 FT/H 0.48 230.87 GR MWD040 API 45.6 155.84 RPX MWD040 OHMM 1 1586.2 RPS MWD040 OHMM 1.36 1586.76 RPM MWD040 OHMM 1.44 2000 RPD MWD040 OHMM 0.9 2000 FET MWD040 HR 0,7 34.73 Mean 11776.3 52.5884 108.85 5.'51872 5.44634 8.87958 50.7345 2.66473 First Reading For Entire File .......... 11336.5 Last Reading For Entire File ........... 12216 File Trailer Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/06/11 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.003 Nsam 1760 1474 1688 1466 1466 1466 1466. 1447 First Reading 11336.5 11479.5 11336.5 11440 11440 11440 11440 11449.5 Last Reading 12216 12216 12180 12172.5 12172.5 12172.5 12172.5 12172.5 Physical EOF File Header Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/06/11 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.002 Comment Record FILE HEADER FILE NUMBER: 3 RAW MWD Curves and icc 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 RPD 12173.0 17456.0 ROP $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SSFTWARE 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 DGR DUAL GAMMA RAY EWR4 ELECTROMAG. RESIS. 4 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): 17456.[ 1-449.~ 18-MAR-0i Insite 4.05.5 65.44 Memory 17514.0 ' 54.0 97.3 TOOL NUMBER PB01876HA4 PB01876HA4 6.125 BOREHOLE CONDITIONS MUD TYPE: QUIKDRIL-N MUD DENSITY (LB/G): 8.50 MUD VISCOSITY (S):' 41.0 MUD PH: 9~2 MUD CHLORIDES (PPM): 700 FLUID LOSS (C3): 8.0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): 1.500 MUD AT MAX CIRCULATING TERMPERATURE: .555 MUD FILTRATE AT MT: 1.700 MUD CAKE AT MT: 1.800 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 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 MWD050 FT/H 4 1 68 4 2 GR MWD050 API 4 1 68 8 3 RPX MWD050 OHMM 4 1 68 12 4 RPS MWD050 OHMM 4 1 68 16 5 RPM MWD050 OHMM 4 1 68 20 6 RPD MWD050 OHMM 4 1 68 24 7 72.0 206.0 72.0 72.0 ?E? MWD050 >.'~ 4 ' 6S 28 8 Name Service DEPT FT ROP M~'DO50 FT/H GR MWD050 RPX MWD050 OH_MIZ. RPS MWD050 OH~{ RPM MWD050 OH~{ RPD MWD050 OH~M. FET MWD050 HR !2!c3 0.45 15 97 0 23 0 74 0 28 0 39 i~514 791.55 627.55 2000 200C 2000 1933.1 79.71 First Reading Fcr Entire File .......... 12173 Last Reading For Entire File ........... 17514 File Trailer Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/06/11 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.004 Mean Nsam 14843.5 10683 74 2278 10596 :~ 2036 10539 35 0042 10567 17 3922 10567 25 6876 10567 '9 3416 10567 3 0172 10567 First Last Reading Readlng 12173 17514 12216.5 17514 12180.5 17449.5 12173 17456 12173 17456 12173 17456 12173 17456 12173 17456 Physical EOF Tape Trailer Service name ............. LISTPE Date ................. . .... 02/06/11 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Next Tape Name ........... UNKNOWN Comments ................. STS LIS Writing Library. Reel Trailer Service name ............. LISTPE Date ..................... 02/06/11 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Next Reel Name ........... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Scientific Technical Services Physical EOF Physical EOF End Of LIS File