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Home My WebLink About206-041 • • Wallace, Chris D (DOA) From: AK, GWO Well Integrity Engineer <AKGWOWellSiteEnginee@bp.com> Sent: Sunday,July 30, 2017 9:36 AM To: AK, GWO SUPT Well Integrity;AK, OPS GC2 Facility OTL;AK, OPS GC2 Field O&M TL;AK, OPS GC2 OSM;AK, OPS GC2 Wellpad Lead;AK, OPS PCC Ops Lead;AK, OPS Prod Controllers;AK, OPS WELL PAD S;AK, OPS Well Pad SW;Ak, Ops West Area IL;AK, RES GPB East Wells Opt Engr;AK, RES GPB West Wells Opt Engr; Bergene, Matthew; Frankenburg,Amy; Peru, Cale; Rupert, C. Ryan; Shriver,Tyson;Wellman,Julie; Youngmun,Alex;Zoesch, Eric; Regg,James B (DOA) Cc: AK, GWO DHD Well Integrity;AK, GWO Projects Well Integrity;AK, GWO Completions Well Integrity;AK, OPS FF Well Ops Comp Rep;AKIMS App User;Cismoski, Doug A; Daniel, Ryan; Dempsey, David G; Hibbert, Michael;Janowski, Carrie; Montgomery,Travis J; Munk, Corey; Obrigewitch, Beau; O'connor, Katherine; Sternicki, Oliver R;Worthington, Aras J;Wallace, Chris D (DOA);AK, GWO Well Integrity Well Information Subject: OPERABLE: Producer S-121 (PTD#2060410)Well barriers restored All, Producer S-121 (PTD#2060410)was made under evaluation on 6/26/17 for having sustained inner annulus casing pressure above NOL after a pad shut down. Slickline performed a gas lift valve change out on 7/24/17 and the well passed a subsequent warm TIFL on 7/27/17. The well now has two competent barriers and is reclassified as Operable. Work Completed: 1. Downhole Diagnostics:Cold TIFL—Failed 06/25/17 2. Operations: POP well—Completed 07/08/17 3. DHD:Warm TIFL Failed 07/10/17 4. Slickline:Change out orifice gas lift valve—Completed 7/24/17 5. DHD:Warm TIFL- Passed 7/27/17 Please reply with any questions, SCANNED EP 1 8 20 Joshua Stephens Well Integrity Engineer Office: 907-659-8110 Cell: 907-341-9068 WO 1 • Wallace, Chris D (DOA) From: AK, GWO SUPT Well Integrity <AKDCWelllntegrityCoordinator@bp.com> Sent: Wednesday,July 19, 2017 5:16 AM To: AK, OPS GC2 Facility OTL;AK, OPS GC2 Field O&M IL;AK, OPS GC2 OSM;AK, OPS GC2 Wellpad Lead;AK, OPS PCC Ops Lead;AK, OPS Prod Controllers;AK, OPS WELL PAD S; AK, OPS Well Pad SW;Ak, Ops West Area IL;AK, RES GPB East Wells Opt Engr;AK, RES GPB West Wells Opt Engr; Bergene, Matthew; Frankenburg,Amy; Peru, Cale; Rupert, C. Ryan; Shriver,Tyson;Wellman,Julie;Youngmun, Alex;Zoesch, Eric; Regg,James B (DOA) Cc: AK, GWO DHD Well Integrity;AK, GWO Projects Well Integrity;AK, GWO Completions Well Integrity;AK, GWO SUPT Well Integrity;AK, OPS FF Well Ops Comp Rep;AKIMS App User; Cismoski, Doug A; Daniel, Ryan; Dempsey, David G; Hibbert, Michael; Janowski, Carrie; Montgomery,Travis J; Munk, Corey; Obrigewitch, Beau; O'connor, Katherine; Sternicki, Oliver R;Worthington,Aras J;Wallace, Chris D (DOA) Subject: UPDATE 07/19/17: UNDER EVALUATION: Producer S-121 (PTD#2060410) Inner Annulus pressure over NOL All, Online diagnostics on Producer S-121 (PTD#2060410) were delayed due to a pad shut-down.Slickline is scheduled to change out the orifice gas lift valve within the next week.The Under Evaluation clock is reset for an additional 14 days. Work Completed/Plan Forward: 1. Downhole Diagnostics: Cold TIFL—Failed 06/25/17 2. Operations: POP well—Completed 07/08/17 3. DHD: Warm TIFL—Failed 07/10/17 4. Slickline: Change out orifice gas lift valve 5. DHD: Warm TIFL 6. Well Integrity Engineer:Additional Diagnostics as required Please reply if in conflict with proposed plan. Thanks, Adrienne McVey Well Integrity Superintendent—GWO Alaska (Alternate:Jack Lau) 0:(907)659-5102 r� C:(907)943-0296 ��GJ�,u ,[� AUG 0 B ?.0 H:2376 11 �1Yf�� From: AK, GWO We -•rity Engineer Sent: Monday, June 26, 20 :• 9 AM To: AK, OPS GC2 OSM; AK, OPS G '-Id O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Prod Controllers; AK, OPS PCC Ops Lead; AK, OPS EOC Specialists; Cismo Doug A; Daniel, Ryan; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; AK, OPS WELL PAD 5; Young . • Alex; Regg,James B (DOA) (jim.regg@alaska.gov) Cc: AK, GWO DHD Well Integrity; AK, GWO SUPT Well In -• ',, • AK, GWO Well Integrity Well Information;AKIMS App User; Dempsey, David G; Hibbert, Michael; Janowski, Carrie; Mon •- ery,Travis J; Munk, Corey; Obrigewitch, Beau; Sternicki, Oliver R; Worthington, Aras J; 'chris.wallace@alaska.gov' Subject: UNDER EVALUATION: Producer S-121 (PTD# 2060410) Inner Annu • •ressure over NOL 1 • • Wallace, Chris D (DOA) From: AK,GWO Well Integrity Engineer <AKGWOWellSiteEnginee@bp.com> Sent: Monday,June 26, 2017 8:19 AM To: AK, OPS GC2 OSM;AK, OPS GC2 Field O&M IL;AK, OPS GC2 Wellpad Lead;AK, OPS Prod Controllers;AK, OPS PCC Ops Lead;AK, OPS EOC Specialists; Cismoski, Doug A; Daniel, Ryan;AK, RES GPB West Wells Opt Engr;AK, RES GPB East Wells Opt Engr;AK, OPS WELL PAD S;Youngmun, Alex; Regg,James B (DOA) Cc: AK, GWO DHD Well Integrity;AK, GWO SUPT Well Integrity;AK, GWO Well Integrity Well Information;AKIMS App User; Dempsey, David G; Hibbert, Michael;Janowski, Carrie; Montgomery,Travis J; Munk, Corey;Obrigewitch, Beau; Sternicki, Oliver R; Worthington,Aras J;Wallace, Chris D (DOA) Subject: UNDER EVALUATION: Producer S-121 (PTD#2060410) Inner Annulus pressure over NOL All, Gas lifted producer 5-121 (PTD#2060410) inner annulus pressure exceeded NOL on 6/24/17 after a pad shut down. The pressures were reported to be Tubing/Inner/Outer=2010/2010/Opsi. A subsequent cold TIFL failed on 06/25/17 indicating a lack of two competent wellbore barriers. At this time the well is classified as Under Evaluation, and is on the 28 day clock for diagnostics and repairs. Plan Forward: 1. Operations-POP well 2. Down Hole Diagnostics: Perform Warm TIFL 3. Well Integrity Engineer:Additional Diagnostics as needed Please respond with any questions, Joshua Stephens SCAN ! r `�1 f N� Well Integrity Engineer !,..-. Office: 907-659-8110 Cell: 907-341-9068 WO —,..�.ww.....c. 1 Image Project Well History File Cover Page 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. ~~ ~ - ~ (~.~ Well History File Identifier Organizing (done> ^ Two-sided III IIIIII II III II III ^ Rescan Needed III (I'l II II II III III RE CAN Color Items: ^ Greyscale Items: ^ Poor Quality Originals: DI ITAL DATA Diskettes, No, ~, ^ Other, No/Type: OVERSIZED (Scannable) ^ Maps: ^ Other Items Scannable by a Large Scanner OVERSIZED (Non-Scannable) ^ Other: ^ Logs of various kinds: NOTES: ^ Other:: BY: Maria Date: ~ ~ ~ /s/ Project Proofing Ill illlll 11111 II III BY: Maria Date: ~ S /s/ Scanning Preparation ~~ x 30 = + =TOTAL PAGES Count does not include cover sheet) ' n BY: Maria Date: ~ ,~ n ~ lsl J j/ I..~ Production Scanning Stage 1 Page Count from Scanned File: ~~~ (Count does include cover sheet) Page Count Matches Number in Scanning reparation: YES _ BY: Maria Date: /~ 3 Stage 1 If NO in stage 1, page(s) discrepant/ies were found: YES BY: Maria Date: Scanning is complete at this point unless rescanning is required. NO /s/ ~ ~/ I 1 NO 1' iiiumiiuauiii ReScanned BY: Maria Date: /s! Comments about this file: o~a,~.~~~kea iiumiuiiiuuii 10/6/2005 Well History File Cover Page.doc ~~ ~. .~~ - .tire -,~,t~` ~ ~, ~~.. ~. .~ r ~ - `t'~ i . ,. r..G . ~ +~ ~ MICROFILMED 6/30/2010 DO NOT PLACE ANY NEW MATERIAL UNDER THIS PAGE C:\temp\Temporary Internet Files\OLK9\Microfilm_Marker.doc ~ • June 25, 2009 ~ ~~~" ~ ~~~~~ ~~~.~~~.~ Mr. Tom Maunder JUL ~~. 2009 Alaska Oil and Gas Conservation Commission P~,~~~~~ ~~! ~, r~k ~~~~~ C~~nm~~~i~~ 333 West 7th Avenue ~.n~~~~~ ~~ Anchorage, Alaska 99501 Subject: Corrosion Inhibitor Treatments of S-Pad ~~"' /~~/ ~ _' ~ ~' Dear Mr. Maunder, Enclosed please find a spreadsheet with a list of wells from S-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, 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, Anna Dube, at 659-5102. Sincerely, ~~,~~~ '~ ~~,"~L ~ '~j 2G~':~ Torin Roschinger BPXA, Well Integrity Coordinator ~ i BP Exploration (Alaska ) Inc. Surface Casing by Conductor Annulus Cement, Corrosion inhibitor, Sealant Top-oH Report of Sundry Operations (10-404) S-pad ~ ~wte 6/25/2009 Well Name PTD N Initial top of cement Vol. of cement um ed Final top of cement Cement rop otf date Corrosion inhibitor Corcosion inhibitod sealant date ft bbls ft na al S-Ot8 /952020 025 NA 0.25 NA 2.6 5/30/2009 S-02A 1947090 025 NA 025 NA 1.7 5/25/2009 5-03 1811900 1325 NA 13.25 NA 92.65 5/20/2009 S-oa 1830790 0 NA 0 NA o.s 5/25l2009 S-OSA 1951890 0 NA 0 NA 0.9 5/26/2009 S-OB 1821650 0 ° NA 0 NA 0.9 5/26/2009 S-07A 1920980 0 NA 0 NA 0.9 5126I2009 S-OBB 2010520 0 NA 0 NA 0.85 5/27/2009 5-09 1821040 1.5 NA 1.5 NA 9.4 5/3112009 S-10A 1911230 0.5 NA 0.5 NA 3.4 5/31/2009 S-118 1990530 0.25 NA 025 NA 1.7 5/27/2009 S-12A 185i930 0.25 NA 025 NA 1.7 6/t/2009 S-~3 1821350 8 NA 8 NA 55.3 6/1/2009 S-15 1840170 025 NA 025 NA 3 6/2/2009 S-17C 2020070 025 NA 025 NA 2.6 6/1/2009 S-18A 2021630 0.5 NA 0.5 NA 3 &2I2009 S-19 1861160 0.75 NA 0.75 NA 22 5/19l2009 S-20A 2010450 0.25 NA 0.25 NA 73 5/19/2009 5-21 1900470 0.5 NA 0.5 NA 3.4 5/25/2009 S-22B 1970510 0.75 NA 0.75 NA 3 5/19/2009 S-23 1901270 0.25 NA 025 NA 1.7 5/25/2009 S-24B 2031630 0.5 NA 0.5 NA 2.6 5/25/2009 S-25A 1982140 0.5 NA 0.5 NA 2.6 5/25/2009 5-26 7900580 0.75 NA 0.75 NA 3.4 5/26/2009 S-27B 2031680 0.5 NA 0.5 NA 2.6 5/31l2009 S-288 2030020 0.5 NA 0.5 NA 2.6 5/31l2009 S-29AL1 1960120 0 NA 0 NA 0.85 5/27/2009 S-30 7900660 0.5 NA 0.5 NA S.t 5/31/2009 S-31A 1982200 0.5 NA 0.5 NA 3.4 5/26/2009 S32 1901490 0.5 NA 0.5 NA 3.4 5/31l2009 S-a3 1921020 0.5 NA 0.5 NA a.3 5/26/2009 S-34 1921360 0.5 NA 0.5 NA 3.4 5/37/2009 5-35 1921480 0 NA 0 NA .85 in 5/31/2009 5-36 1921160 0.75 NA 0.75 NA 425 5/27/2009 S-37 7 920990 1.25 NA 125 NA 11.9 5/27/2009 S38 1921270 0.25 NA 025 NA 102 5/27/2009 S-41 7960240 1.5 NA 1.5 NA 17.1 5/30/2009 5-42 1960540 0 NA 0 NA 0.9 5/30/2009 5-43 7970530 0.5 NA 0.5 NA 1.7 5/28/2009 5-44 1970070 025 NA 025 NA 1.7 5/28/2009 S•100 2000780 2 NA 2 NA 21.3 5/29/2009 S-~ot 2001150 125 NA 7.25 NA 77.s 5/29/2009 5-102L7 2031560 725 NA 1.25 NA 11.1 5/31/2009 S-703 2001680 1.5 NA 1.5 NA 11.9 5/18/2009 5-104 2001960 1.75 NA 1.75 NA 15.3 5/20/2009 S-105 2001520 4 NA 4 NA 32.7 5/20/2009 S-106 2010120 16.25 NA 1625 NA 174.3 6/2I2009 S-~07 2011130 225 NA 2.25 NA 28.9 5/18/2009 S-t08 2011000 3.5 NA 3.5 NA 40 5I30/2009 5-109 2022450 2 NA 2 NA 27.3 5/30/2009 S-110 2011290 11.75 NA 11.75 NA 98.6 5/30/2009 S-t ~ 7 2050510 2 NA 2 NA 19.6 5/30/2009 S-712 2021350 0 NA 0 NA 0.5 5/30/2009 S473 2021430 175 NA 1.75 NA 22.7 5/18/2009 5-714A 2021980 125 NA 125 NA 102 5/30l2009 S-115 2022300 2.5 NA 2.5 NA 27.2 5/29/2009 5-116 2031810 1.5 NA 1.5 NA t3.6 5/28/2009 5-177 2030120 7.5 NA 1.5 NA i5.3 5/29/2009 S-1~8 2032000 5 NA 5 NA 76.5 5/28/2009 S-179 2047620 1 NA 1 NA 52 5/30/2009 5-120 2031980 5.5 NA 5.5 NA 672 5/29/2009 S•121 2060410 4.5 NA 4.5 NA 53.6 5/28/2009 5-122 2050810 3 NA 3 NA 21.3 5/29/2~9 5-123 2041370 1.5 NA 1.5 NA 20.4 5/2&/2D09 5-124 2067360 1.75 NA 1.75 NA 11.9 5/26/2009 5-~25 2070830 225 NA 225 NA 20.4 5/28/2009 5-126 20710970 125 NA 1.25 NA 15.3 6/1/2009 S-20o 1972390 125 NA 125 NA 14.5 5/28/2009 5-201 2001840 0 NA 0 NA 0.85 6/19/2009 S-2t3A 2042130 2 NA 2 NA 13.6 5/29/2009 5-215 2021540 2 NA 2 NA 18.7 6l1/2009 S-216 2001970 4.75 NA 4.75 NA 51 5/29/2009 5-21~ 2070950 0.25 NA 025 NA t.7 6/1/2009 S-400 2070740 2 NA 2 NA 9.4 5/28/2009 5-401 2060780 i 6 NA 16 NA 99.5 6/2/2009 S-SOa 0 NA 0 NA O.BS 5/28/2009 DATA SUBMITTAL COMPLIANCE REPORT 6/19/2008 Permit to Drill 2060410 Well Name/No. PRUDHOE BAY UN AURO S-121 Operator BP EXPLORATION (ALASKA) INC MD 12533 TVD 6883 Completion Date 5/31/2006 Completion Status 1-OIL Current Status 1-OIL REQUIRED INFORMATION API No. 50-029-23304-00-00 UIC N Mud Log No Samples No Directional Survey r'Ye~ DATA INFORMATION Types Electric or Other Logs Run: DIR / GR, GR /RES / PWD /DEN / NEU, GR /RES ! AZM DEN / NE (data taken from Logs Portion of Master Well Data Maint Well Log Information: Log/ Electr Data Digital Dataset Log Log Run Interval OH / mearrrmi rvumoer Name D Asc Directional Survey Directional Survey D Asc Directional Survey Directional Survey Production " ED C Lis 15376 Induction/Resistivity c,,~L6//g 15376 Induction/Resistivity ~Og 15376 Induction/Resistivity D C Lis 15377 Induction/Resistivity 15377 Induction/Resistivity 15377 Induction/Resistivity scale meaia No Start Stop CH Received Comments 0 12533 Open 9/14/2006 0 12533 Open 9/14/2006 0 10002 Open 9/14/2006 PB 1 0 10002 Open 9/14/2006 PB 1 25 Blu 1 9000 11942 Case 12/7/2006 MEM PPL, GR, CCL, Pres, Temp, Gradio, Spin 6-Nov- 2006 5 42 Case res, TerttR'GT~td'Spm - ov- 29A~-"' 22 10001 Open 8/27/2007 P61 LIS Veri, GR, ROP, FET, DRHO, NPHI w/Graphics in PDS 2 Blu 108 10002 Open 8/27/2007 P61 MD Vision Service 17- May-2006 2 Blu 108 10002 Open 8/27/2007 P61 TVD Vision Service 17-May-2006 22 12532 Open 8/27/2007 LIS Veri, GR, ROP, FET, NPHI, DRHO, w/Graphics in PDS 2 Blu 12 12533 Open 8/27/2007 MD Vision Service 26-May- 2006 2 Blu 12 12533 Open 8/27/2007 TVD Vision Service 26- May-2006 ', Well Cores/Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments DATA SUBMITTAL COMPLIANCE REPORT 6/19/2008 Permit to Drill 2060410 Well Name/No. PRUDHOE BAY UN AURO S-121 Operator BP EXPLORATION (ALASKA) INC MD 12533 TVD 6883 Completion Date 5/31/2006 Completion Status 1-OIL Current Status 1-OIL API No. 50-029-23304-00-00 UIC N ADDITIONAL INFORM~ON Well Cored? Y Daily History Received? N Chips Received? ~"Po-"' Formation Tops ~N Analysis Received? Comments: Compliance Reviewed By: _ _ _ ______ Date: `~ ^"'~/ _ 08/15/07 ~~ Schlum~erger Sehlumberger-bCS 2525 Gambell St, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth Well Job # Log Description NO. 4372 Company: Alaska Oil 8 Gas Cons Comm Altn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Orion Aurora Date BL Color CD 5-121 40013524 OH EDIT MWDILWD 05/26106 2 1 5-121PB1 40013524 OH EDIT MWD/LWD 05/17/06 2 1 L-215 L-215PB1 L-215pB2 40012404 40012404 40012404 OH EDIT MWDILWD OH EDIT MWDILWD () ~ OH EDIT MWDILWD - / 09122105 09/09!05 09/17!05 2 2 2 1 1 1 V-218 L-215 11637325 10913049 CH EDIT PDC GR USIT CH EDIT PDC GR USIT 04/11/07 09I26I05 i 1 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. r s - r Petrotechnical Data Center LR2-1 ~ "' ~ z~ ' 900 E Benson Blvd. `7 ~ ».... - - Anchorage AK 99508-4254 3`~ I ('~ / ry (~ fs "] Date Delivered: ~1~,) $~ ~ t7 A. t 1 } ~I d Schlumberger-DCS 2525 Gambell St, Suite 400 Anchorage, AK 99503-2838 ATTN: Belh Received by: 3 01/22/07 s Schlum~erger Schlumberger•DCS 2525 Gembell St, Suite 400 Anchorage, AK 99503-2938 ATTN: Beth ~~, ~~ Well Job # Log Description NO. 4114 Company: Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Aurora Borealis Orion Date BL Color CD Z-100 10672336 LDWG OH EDIT WIRELINE 12/02105 2 1 V-122 11536192 CH EDIT USIT PDC-GR 01/01107 1 1 5-124 11485868 USIT 11/08/06 1 V-214 17272898 USIT __ 11102/06 1 S-121 11366505 MEM PROD PROFILE 11/06/06 1 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2.1 900 E Benson Blvd. Anchorage AK 99508-4254 Date Delivered. Schlumberger-DCS 2525 Gambell St, Suite 400 Anchorage, AK 99503-2638_ ATTN. Beth .. Received by. em_ „~~~r ~ ~I,II :~I~~1 J 12/06/06 Schtumberger Schlumberger-DCS 2525 Gambell St, Suke 400 Anchorage, AK 99503-2836 ATTN: Beth Well Job A Log Description NO. 4065 Company: Alaska Ofl 8 Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Aurora Orion Prudhoe Bay Date BL Color CD S-288 PBt 40008508 OH EDIT OF MWD/LWD 02/01/03 2 1 I-100 11216288 OH EDIT OF MWDILWD 04/13/06 2 1 L-212 L-212 PB1 L-212 PB2 40011670 40011670 40011670 OH EDIT OF MWDILWD OH EDIT OF MWDILWD OH EDIT OF MWDILWD 04/13/05 03/25/05 04/06105 2 2 2 - 1 1 1 PLEASE ACKNOWLEDGE RECEIPT BV SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E Benson Blvd. Anchorage AK 99506-4254 Date Delivered Schlumbergd~'D~`, ~ i; ,. 2625 Gambe ~S ro l ~0 ~ ti~ ~11J - N Anchorage, 8~ ATTN: Beth Received by: - -• ~- - ~ Yo+N~aye,FAfa(1 • i ~~~-~~ r • • Schlumberger Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatched To: Well No Installation/Rig S-121 Nabors 9ES AOGCC -Librarian Date Dispatched: 14-Jun-O6 Dispatched By: Mauricio Perdomo Data No Of Prints No of Floppies Surveys 2 1 Received By: Please sign and return to: Drilling & Measurements LWD Division / ( ~ (~/~ / ~ 10 2525 Gambell Street, Suite 400 ` ~ ~ ~ U ! ay Anchorage, Alaska 99501 nroseiC~slb.com Fax:907-561-8317 LWD Log Delivery V1.1,10-02-U3 a.~~_a~( • • Schlumberger Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatched To: AOGCC -Librarian Well No S-121PB1 Date Dispatched: 14-Jun-06 Installation/Rig Nabors 9ES Dispatched By: Mauricio Perdomo LWD Log Delivery V1.1,10-02-03 Data No Of Prints No of Floppies Surveys 2 1 Received By: Please sign and return to: Drilling & Measurements LWD Division ~ 2525 6ambell Street, Suite 400 v W v Anchorage, Alaska 99501 nroselC~slb.com Fax: 907-561-8317 ~~ b- ~`< LPG ~~i~~~~ a • STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COM~SION rc.~IVE~ AUG 0 8 200r Alaska Oit ~ Gas C© WELL COMPLETION OR RECOMPLETION REPORT AND LOG ~~}}~~ ~$~ G~rnis$ia~ 088108: Revilsed,~Pu~ o~~erction 1a. Well Status: ®Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended ^ WAG 20AAC25.105 zoAACZS.tto ^ GINJ ^ WINJ ^ WDSPL No. of Completions One Other 1b. Well Class: ®Development ^ Exploratory ^ Stratigraphic ^ Service 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband. 5/31/2006 12. Permit to Drill Number 206-041 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 5/9/2006 13. API Number 50-029-23304-00-00 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 5/25/2006 14. Well Name and Number: PBU S-121 4257 FSL, 4501 FEL, SEC. 35, T12N, R12E, UM Top of Productive Horizon: 4500' FSL, 4495' FEL, SEC. 26, T12N, R12E, UM 8. KB Elevation (ft): 64.2 15. Field /Pool(s): Prudhoe Bay Field /Aurora Pool Total Depth: 2373' FSL, 4386' FEL, SEC. 23, T12N, R12E, UM 9. Plug Back Depth (MD+TVD) 12444 + 6873 Ft 4b. Location of Well (State Sase Piane Coordinates): Surface: x- 618930 y- 5980460 Zone- ASP4 10. Total Depth (MD+TVD) 12533 + 6883 Ft 16. Property Designation: ADL 047448 TPI: x- 618842 y- 5985982 Zone- ASP4 Total Depth: x- 618897 y- 5989137 Zone- ASP4 11. Depth where SSSV set NIA MD 17. Land Use Permit: 18. Directional Survey ®Yes ^ No 19. Water depth, if offshore N/A MSL 20. Thickness of Permafrost 1900' (Approx.) 21. Logs Run: DIR / GR, GR /RES ! PWD /DEN /NEU, GR /RES / AZM DEN /NEU 1 ABI J PWD 22. CASING, LINER AND CEMENTING RECORD CASING SETTING DEPTH MD SETTING DEPTH,TVD HOLE AMOUNT :SIZE Wr. PER FT. GRADE `TOP BOTTOM TOP BOTTt)M SIZE CEMENTING RECORD PULLED 20" 215.5# A-43 Surface 108' Surface 108' 42" 260 sx Arctic Set A rox. 9-5/8" 40# L-80 28' 3404' 28' 2862' 12-1 /4" 565 sx AS Lite, 402 sx Class'G', t5s sx As Lite 7" 26# L- 0 26' 2 ' 6751' 8-3/4" 93 sx LiteCrete, 208 sx'G', 164 sx LiteC, 195 sx'G' 4-1/2" 12.6# L-80 9176' 12528' 6682' 6882' 6-1/8" 404 sx Class'G' 23. Perforations open to Production (MD + TVD of Top and 24; TU81NG RECORD Bottom Interval, Size and Number; if none, state "none"): SIZE DEPTH SET MD PACKER SET MD 2-1/2" Gun Diameter, 6 spf 2-1/2" Gun Diameter, 6 spf 4-1/2", 12.6#, L-80 4755' MD TVD MD TVD 3-1/2", 9.2#, L-80 / 13Cr80 4755' - 9186' 9110' 9360' - 9520' 6756' - 6800' 10530' - 10580' 6816' - 6826' 9570' - 9630' 6810' - 6820' 10950' - 11070' 6829' - 6818' 25 ACID, FRACTURE, CEMENT SOU£EZE, ETC. 9710' - 9840' 6834' - 6837' 11140' - 11250' 6812' - 6808' DEPTH INTERVAL MD AMOUNT & KIND OF MATERIAL USED 9890' - 9940' 6830' - 6823' 11450' - 11490' 6813' - 6815' 9990' 10180' 6815' 6787' 11520' 11560' 6816' 6818' 9364 Set EZSV (P61) - - - - 10200' - 10380' 6785' - 6788' 11600' - 11650' 6820' - 6822' 9346' Set Whipstock (PB1) 10410' - 10500' 6792' - 6810' 11750' - 12000' 6828' - 6844' Freeze Protect with 167 Bbls of Diesel 26. PRODUCTION TEST Date First Production: July 27, 2006 Method of Operation (Flowing, Gas Lift, etc.): Gas Lift Date of Test 7/29/2006 Hours Tested 4 PRODUCTION FOR TEST PERIOD OIL-BBL 883 GAS-MCF 923 WATER-BBL 142 CHOKE SIZE 176° GAS-OIL RATIO 1,045 FIOW TUbing Press. 340 CaSing PreSSUre 1,450 CALCULATED 24-HOUR RATE OIL-BBL 5,295 GAS-MCF 5,535 WATER-BBL 852 OIL GRAVITY-API (CORK) 27. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water (attach separate sheet, if necessary). Submit core chips; if none, state "none". ESL AUG 1 4 20DS None Form 10-407 Revised 12/20 ~ I ~ ~ ~ ~ ~ CONTINUED ON REVERSE SIDE 28. GEOLOGIC MARKS 29. ORMATION TESTS Include and briefly summarize test results. List intervals tested, NAnne MD TVD and attach detailed supporting data as necessary. If no tests were conducted, state "None". Ugnu 4506' 3601' None Ugnu M Sands 6270' 4802' Schrader Bluff N Sandstones 6597' 5026' Schradr Bluff O Sandstones 6759' 5136' Base Schrader Bluff /Top Colville 7210' 5437' HRZ 9282' 6725' Kalubik 9332' 6746' Kuparuk C 9346' 6751' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys 31. I hereby certify that the foregoing is true and correct to the best of my knowledge. ~~ D ~ ~/ Signed Terrie Hubble Title Technical Assistant Date PBU S-121 206-041 Prepared ey NameMumber. Terrie Hubble, 564-4628 Well Number Permit No. / A rOVal NO. Drilling Engineer: Brandon Peltier, 564-5912 INSTRUCTIONS GeNew-~: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITena 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. ITenn 4b: TPI (Top of Producing Interval). ITevn 8: The Ke{ly Bushing eievation in feet above mean low low water. Use same as reference for depth measurements given in other spaces on this form and in any attachments. IreM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). ITeen 20: True vertical thickness. ITeM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. (Tenn 23: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). ITeM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). ITenu 27: If no cores taken, indicate "None". ITenn 29: List all test information. If none, state "None". Form 10-407 Revised 12/2003 Submit Original Only DECEIVED STATE OF ALASKA ALAS~IL AND GAS CONSERVATION CO SIGN JUN 2 9 2006 WELL COMPLETION OR RECOMPLETION REPORT AND LOG 4laska Oil & Gas Cons. Commission Anr_hnrann _ 1 a. Well Status: ®Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended ^ WAG 2oAAC2s.,os 2oAac2s.,,o ^ GINJ ^ WINJ ^ WDSPL No. of Completions One Other 1 b. Well Class: ®Development ^ Exploratory ^ Stratigraphic ^ Service 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband. 5/31/2006 12. Permit to Drill Number 206-041 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 5/9/2006 13. API Number 50-029-23304-00-00 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 5/25/2006 14. Well Name and Number: PBU S-121 4257 FSL, 4501 FEL, SEC. 35, T12N, R12E, UM Top of Productive Horizon: 4500' FSL, 4495' FEL, SEC. 26, T12N, R12E, UM g. KB Elevation (ft): 64.2 15. Field /Pool(s): Prudhoe Bay Field /Aurora Pool Total Depth: 2373' FSL, 4386' FEL, SEC. 23, T12N, R12E, UM 9. Plug Back Depth (MD+TVD) 12444 + 6873 Ft 4b. Location of Well (State Base Plane Coordinates): Surface: x- 618930 y- 5980460 Zone- ASP4 10. Total Depth (MD+TVD) 12533 + 6883 Ft 16. Property Designation: ADL 047448 TPI: x- 618842 y- 5985982 Zone- ASP4 Total Depth: x- 618897 Y- 5989137 Zone- ASP4 11. Depth where SSSV set N/A MD 17. Land Use Permit: 1 if ff h f P f 20 Thi k t 18. Directional Survey ®Yes ^ No ore 9. Water depth, o s N/A MSL erma ros ness o . c 1900' (Approx.) 21. Logs Run: DIR / GR, GR /RES 1 PWD /DEN /NEU, GR /RES / AZM DEN !NEU / ABI /PWD ASING, INER AND EMENTING ECORD CASING ETTING EPTH MD ETTING EPTH ND HOLE MOUNT SIZE WT. PER FT. GRADE OP OTTOM OP OTTOM SIZE CEMENTING RECORD PULLED 20" 215.5# A-43 Surface 108' Surface 108' 42" 260 sx Arctic Set Approx.) 9-5/8" 40# L-80 28' 3404' 28' 2862' 12-1 /4" 565 sx AS Lite, 402 sx Class 'G', , 56 sx AS Lite 7" 26# L-80 26' 9346' 26' 6751' 8-3/4" 93 sx LiteCrete, 208 sx'G', 184 sx Liter, ,95 sx'G' 4-1/2" 12.6# L-80 9176' 12528' 6682' 6882' 6-1/8" 404 sx Class 'G' 23. Perforations open.to Production (MD +TVD of Top and " " 24. TuawG RECORD Bottom Interval, Slze and Number; if none, state none ): SIZE DEPTH SET (MD) PACKER SET (MD) 2-1/2" Gun Diameter, 6 spf 2-1/2" Gun Diameter, 6 spf 4-1/2", 12.6#, L-80 4755' MD TVD MD TVD 3-1/2", 9.2#, L-80 / 13Cr80 4755' - 9186' 9110' 9360' - 9520' 6756' - 6800' 10530' - 10580' 6816' - 6826' 9570' - 9630' 6810' - 6820' 10950' - 11070' 6829' - 6818' 25. ACID, FRACTURE, CEMENT SQUEEZE, ETC. 9710' - 9840' 6834' - 6837' 11140' - 11250' 6812' - 6808' 9940' 6830' 11490' 6813' 6815' 9890' 6823' 11450' DEPTH INTERVAL MD AMOUNT 8c KIND OF MATERIAL USED - - - - 9990' - 10180' 6815' - 6787' 11520' - 11560' 6816' - 6818' 9364 Set EZSV (PB1) 10200' - 10380' 6785' - 6788' 11600' - 11650' 6820' - 6822' 10410' - 10500' 6792' - 6810' 11750' - 12000' 6828' - 6844' g346' Set Whipstock (PB1) Freeze Protect with 167 Bbls of Diesel 26. PRODUCTION TEST Date First Production: Not on Injection Yet Method of Operation (Flowing, Gas Lift, etc.): N/A Date of Test Hours Tested PRODUCTION FOR TEST PERIOD OIL-BBL GAS-McF WATER-BBL CHOKE SIZE GAS-OIL RATIO Flow Tubing PreSS. Casing Pressure CALCULATED 24-HOUR RATE OIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-API (CORK) 27. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water (attach separate sheet, if necessary). Submit core ch~s~if none, state "none". G01!AF4..E'I'li~ None T)+' RB~s ~~~. ,'~~#.. ~ ~ 1006 F1~ Form 10-407 Revised 12/200 ~ ~ ~ O TINUED ON REVERSE SIDE GEOLOGIC MARKE 29' ORMATION TESTS Include and briefly summarize test results. List intervals tested, NAME MD TVD and attach detailed supporting data as necessary. If no tests were conducted, state "None". Ugnu 4506' 3601' None Ugnu M Sands 6270' 4802' Schrader Bluff N Sandstones 6597' 5026' Schradr Bluff O Sandstones 6759' 5136' Base Schrader Bluff /Top Colville 7210' 5437' H RZ 9282' 6725' Kalubik 9332' 6746' Kuparuk C 9346' 6751' 30. List of Attachments: Summary of Daily Drilling Reports, Wetl Schematic Diagram, Surveys 31. I hereby certify that the foregoing is true and correct to the best of my knowledge. ~ ~q ~7a~~~ ~ l Signed Terrie Hubble ~ Title Technical Assistant Date le 564-4628 PBU S-121 206-041 Prepared By Name/Number: Terrie Hubb Well Number Permit No. /Approval No. Drilling Engineer: Brandon Peltier, 564-5912 INSTRUCTIONS GeNeRA~: 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 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. ITeM 4b: TPI (Top of Producing Interval). ITEM 8: The Kelly Bushing elevation in feet above mean low low water. Use same as reference for depth measurements given in other spaces on this form and in any attachments. IreM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). ITeM 20: True vertical thickness. ITeM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. IreM 23: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). IreM 26: Method of Operation: Flowing, Gas lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). ITeM 27: If no cores taken, indicate "None". ITeM 29: List all test information. If none, state "None". Form 10-407 Revised 12/2003 Submit Original Only Printed: 6/5/2006 11:47:25 AM BP EXPLORATION Page 1 of 15 Operations Summary Report Legal Well Name: S-121 Common Well Name: S-121 Spud Date: 5/9/2006 Event Name: DRILL+COMPL ETE Start: 5/6/2006 End: 5/31/2006 Contractor Name: NABOBS ALAS KA DRILLING I Rig Release: 5/31/2006 Rig Name: NABOBS 9ES Rig Number: Date From - To Hours Task ~ Code ~ I NPT j Ph ase ~ Description ofi Operations , -- - _ 5/6/2006 21:00 - 00:00 3.00 MOB N WAIT PRE Release from L-122 RWO. Rig on Standby due to incomplete site preparation. Bridle up the blocks and ready for move. 5/7/2006 00:00 - 11:00 11.00 MOB N WAIT PRE Rig on Standby due to incomplete site preparation -ready for move. 11:00 - 15:00 4.00 MOB N WAIT PRE Rig on Standby waiting on trucks to move rig - Doyon 14. 15:00 - 20:00 5.00 MOB P PRE Move the satellite camp, pits and shop from L pad to S pad. Move the sub off of L-122. 20:00 - 00:00 4.00 MOB P PRE Move the sub off of L-122. Move the sub from L pad to S pad. 5/8/2006 00:00 - 05:00 5.00 MOB P PRE Continue to move the sub from L pad to S pad. MU the surface stack and layout the diverter line while moving the sub. 05:00 - 06:30 1.50 RIGU P PRE Lay mats and herculite. Move in and spot the sub over S-121. 06:30 - 09:00 2.50 RIGU P PRE PJSM. Raise the derrick. Spot the pits and RU the interconnect. Rig accepted at 0900 hours. 09:00 - 13:00 4.00 RIGU P PRE Take on fresh water, bridle down and RU the rig floor. Prep and berm the cellar. Hook up the diverter lines. 13:00 - 19:00 6.00 RIGU P PRE Changeout the 16" air boot to 20" adapter. Cut riser to fit. NU 19:00 - 00:00 I 5.001 RIGU I P I I PRE 5/9/2006 100:00 - 01:30 I 1.501 RIGU I P I I PRE 01:30 - 03:00 1.50 RIGU P PRE 03:00 - 03:30 0.50 RIGU P PRE 03:30 - 04:30 1.00 DRILL P SURF 04:30 - 05:00 0.50 DRILL P SURF 05:00 - 06:00 1.00 DRILL P SURF 06:00 - 06:30 0.50 DRILL P SURF 06:30 - 21:00 14.50 DRILL P SURF 21:00 - 22:00 1.00 DRILL P SURF 22:00 - 00:00 2.00 DRILL P SURF 5/10/2006 00:00 - 01:00 1.00 DRILL P SURF 01:00 - 02:30 1.50 DRILL P SURF 02:30 - 14:00 11.50 DRILL P SURF the riser and dresser sleeve. Install 4" valves. Mix spud mud and strap the drill pipe and BHA. RU rig to high line power. PU and stand back in the derrick 35 stands of 4" HT40 DP. PU and stand back 8 stands of HWDP. Continue to make spud mud. Hold pre-spud meeting with the crew coming on tower at midnight. RU and test the diverter. Witness of the test waived by Jeff Jones of the AOGCC. Test witnessed by BP WSL James Franks and NAD TP Roy Hunt. MU 12-1l4" BHA#1. Rig up Gyro. Fill hole and check for leaks - OK Clean out 20" conductor casing from 71' to 160'. 480 gpm, 500 psi. Spud well and drill ahead directionally with gyro from 160' to 250'. 480 gpm, 500 psi, 60 rpm. POH to BHA. Pick up and make up NM STAB, UBHO, orient MWD, and pick up Jar stand. Run in hole to 250'. Directionally drill with gyro from 250' to 900'. Continue directionally drill with MWD from 900' to 1,746'. 650 gpm, 2,130 psi off, 2,330 psi, on, 60 rpm, 3k TO off, 6k TO on, PU - 90k, SO - 75k, RT - 80k, WOB - 35k. AST - 5.51 hrs, ART - 2.63 hrs. 'Lost 364 bbls of spud mud between depths of 300' to 800'. Losses were at 70-50 bph while drilling and no losses static. Added MIX II Fine & Coarse. No losses after 800'. Circulate 3 1/2 bottoms up @ 650 gpm, 2,050 psi, 80 rpm, 2.8 TO. Monitor well - OK. 9.1 ppg mud weight. POH for BHA from 1,746' to 77'. PU - 90k, SO - 75k. 20k overpull @ 1,340', no other problems. Break out bit and inspect same - OK. Adjust motor housing from 1.83 deg to 1.5 deg. Add NM STAB to drill collar stand. Trip in hole with BHA #2 to 1,655'. Pumped through tight spots at 1,340' and 1,473'. Wash to bottom from 1,655' to 1,746'. Directionally drill from 1,746' to TD C~ 3,413' TMD, 2,868' TVD. Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Page 2 of 15 Operations Summary Report Legal Well Common W Event Nam Contractor Rig Name: Date ! Name: ell Name: e: Name: From - To S-121 S-121 DRILL+C NABOB NABOB Hours j OMPLE S ALASK S 9ES Task TE A DRI Code ~ LING NPT Start I Rig Rig Phase Spud Date: 5/9/2006 : 5/6/2006 End: 5/31/2006 Release: 5/31/2006 Number: Description of Operations 5/10/2006 02:30 - 14:00 11.50 DRILL P SURF 690 gpm, 3,240 psi off, 3,495 on, 80 rpm, 4k TO off, 6k TQ on. PU - 125k, SO - 80k, RT - 95k. AST - 4.72 hrs, ART - 2.63 hrs. Backream 50' prior to connections. 'No mud losses, no hydrates encountered. 14:00 - 15:30 1.50 DRILL P SURF Circulate 3 bottoms up @ 695 gpm, 3,100 psi, 80 rpm, 4k TQ. Monitor well - OK. Mud weight - 9.4 ppg. 15:30 - 16:30 1.00 DRILL P SURF POH from 3,413' to 1,935' without problem. PU - 125k, SO - 80k. Started swabbing and pulling tight @ 1,935'. 16:30 - 17:30 1.00 DRILL P SURF Pump and backream out from 1,935' to 1,561'. 690 gpm, 2,325 psi, 80 rpm, 5k TQ. 17:30 - 18:30 1.00 DRILL P SURF Run in hole from 1,561' to 3,334'. Worked through tight spot @ 2,590'. Washed last stand down from 3,334' to 3,413'. 18:30 - 20:30 2.00 DRILL P SURF Circulate 3 bottoms up @ 690 gpm, 3,140 psi, 80 rpm, 5k TO. Monitor well - OK. Mud weight - 9.3 ppg. 20:30 - 22:00 1.50 DRILL P SURF POH from 3,413' to 1,858' without problem. PU - 125k, SO - 80k. Started swabbing and pulling tight @ 1,935'. Attempt to work through by pumping and no rotation without success. 22:00 - 00:00 2.00 DRILL P SURF Backream from 1,858' to 1,189'. 585 gpm, 1,700 psi, 60 rpm, 3k TQ. Made several attempts at different intervals to pull without pumping without success. 'No mud losses for the day. 5/11/2006 00:00 - 00:30 0.50 DRILL P SURF Continue backreaming from 1,189' to HWDP @ 1,001'. 585 gpm, 1,585 psi, 60 rpm, 3k TO. 00:30 - 01:00 0.50 DRILL P SURF Run in hole from 1,001' to 1,750'. Set down and attempt to work through tight spot. Ream 1 stand from 1,750' to 1,842'. 180 gpm, 440 psi, 40 rpm, 4-12k TO. Started returning large amounts of cuttings back to surface. 01:00 - 01:30 0.50 DRILL P SURF Circulate 2 bottoms up @ 1,842'. 555 gpm, 1,585 psi, 60 rpm, 3.6k TQ. Returned large amounts of sand, clay and wood to surface. 01:30 - 03:00 1.50 DRILL P SURF Attempt to run in hole dry without success. Ream from 1,842' to to 2,028'. Run in hole dry one stand to 2,121'. Ream from 2,121' to 2,215'. Reaming @ 180 gpm, 440 psi, 40 rpm, 4-12k TO. 03:00 - 04:30 1.50 DRILL P SURF Run in hole dry from 2,215' to tight spot @ 2,775'. Pump through briefly @ 2,775' and continue running in hole dry to 3,334'. Washed last stand down from 3,334' to 3,413'. 04:30 - 05:30 1.00 DRILL P SURF Circulate for trip and running casing @ 700 gpm, 3,360 psi, 85 rpm, 6k TO. No significant amount of cuttings returned to surface. Monitor well - OK. 9.3 ppg MW. 05:30 - 06:00 0.50 DRILL P SURF POH from 3,413' to 3,010'. Pull 50k over @ 3,010'. 06:00 - 10:00 4.00 DRILL P SURF Backream from 3,010' to 817'. 650 gpm, 2,670 psi, 80 rpm, 7k TQ, 93k RWT. Started returning large amounts of sand, clay and small pieces of wood to surface. 10:00 - 10:30 0.50 DRILL P SURF Circulate 2 bottoms up until shakers cleaned up. 650 gpm, 1,840 psi, 80 rpm, 3k TQ. 10:30 - 11:30 1.00 DRILL P SURF POH from 817' to 77' without pumping or rotating. Stand back jar and drill collar stands. 11:30 - 12:30 1.00 DRILL P SURF Laydown BHA #2. 12:30 - 13:30 1.00 DRILL P SURF Clear and clean rig floor. Laydown vendor tools to ground. 13:30 - 16:00 2.50 CASE P SURF Rig up to run surface casing. Make dummy run with casing hanger. 16:00 - 22:00 6.00 CASE P SURF PJSM on running casing. Pick up and Baker Lok shoe track. Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Operations Summary Report Page 3 of 15 Legal Well Name: S-121 Common Well Name: S-121 Spud Date: 5/9/2006 Event Name: DRILL+COMPLETE Start: 5/6/2006 End: 5/31/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 5/31/2006 Rig Name: NABOBS 9ES Rig Number: Date From - To ~ Hours ~ Task ~ Code'' NPT 5/11/2006 16:00 - 22:00 ~ 6.00 ~ CASE ~ P 22:00 - 00:00 5/12/2006 100:00 - 07:00 2.00 CASE P 7.001 CASE I P 07:00 - 08:00 1.00 CASE P 08:00 - 10:00 2.00 CEMT P 10:00 - 13:30 3.50 CEMT P 13:30 - 14:30 ~ 1.00 ~ CEMT ~ P Phase ! Description of Operations SURF Fill same and check floats - OK. Continue running in hole with 9 5/8" 40# L-80 BTC surface casing to 2,409'. Set down at 2,409', attempt to work by without pump without success. Started pushing away appx. 1/2 of pipe displacement. Made up casing to mark with 8,500 fUlbs make-up torque using Best-O-Life 2000. Filled every joint with casing fill-up tool. SURF Circulate and work casing down from 2,400' to 2,554' taking weight all the way with occasional 5- 15' clear spots. 170 gpm, 285 psi. Returning large amounts of sand and clay while circulating casing down. *Lost 44 bbls of mud. SURF Circulate and work casing down from 2,554' to 3,373'. Took weight all the way with occasional 5-15' clear spots. 230 gpm, 385 psi. Cuttings returns cleaned up at shakers after midnight. Loss rate 12-7 bph. `Lost 80 bbls of mud from midnight, 124 bbls total on trip in hole. Ran total of 83 joints 9 5/8" 40# L-80 BTC casing, 10' space out pup joint. Float Shoe @ 3,404' Float Collar ~ 3,320' Tam Port Collar @ 1,010' Bowspring Centralizers: 1 on stop ring 5' above shoe on jt. #1 1 on stop ring 5' above float collar 23 on collars on jts #3-25 1 ea 10' above and below Tam Port Collar. SURF Make up cross-over to landing joint. Make up hanger and landing joint, wash down and land casing on depth C~ 3,404'. Laydown casing fill-up tool, blowdown topdrive and make up cement head. SURF Stage pump rate up to 10 bpm, circulate and condition mud for cement job. 650 psi, PU - 175k, SO - 75k, 60 viscosity, 15 YP. Reciprocate pipe in 5 foot strokes due to casing collar hanging up on landing ring. No mud losses during circulation. Held cement PJSM while circulating. SURF Switch over to Dowell. Pump 5 bbls H2O @ 2 bpm, 120 psi, pressure test lines to 3,500 psi - OK. Pump 120 bbls 10.0 ppg MudPush @ 5.1 bpm, 120 psi. Drop bottom plug. Mix and pump 448 bbls, 565 sx, 10.7 ppg ArcticSet Lite lead cement ~ 7.5 bpm, 260 psi ICP, 350 psi FCP. Mix and pump 83 bbls, 400 sx, 15.8 ppg Class "G" cement @ 6 bpm, 470 psi ICP, 260 psi FCP. Shut down and drop top plug and kick out with 10 bbls of H2O @ 5 bpm, 60 psi. Switch over to rig pumps and displace cement with 9.3 ppg mud @ 7 bpm avg @ 150 psi ICP, 590 psi FCP. Bump plug with 1,200 psi @ calculated displacement of 97%. CIP @ 13:15 hr. Bleed off pressure, check floats - OK. Reciprocated casing throughout cement job until casing was set on landing ring 80 bbls of displacement away. Had full returns throughout cementing. Lost 25 bbls during displacement. Did not return any spacer or cement to surface. *No surface broaching on surrounding wells* SURF Rig down casing equipment, change out bales, backout top Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Operations Summary Report Legal Well Name: Common Well Name Event Name: Contractor Name: Rig Name: S-121 S-121 DRILL+COMPLETE NABOBS ALASKA DRILLING I NABORS9ES Date From - To Hours Task i Code 5/12/2006 13:30 - 14:30 1.00 CEMT P 14:30 - 15:00 0.50 CEMT P 15:00 - 16:00 1.00 CEMT P 16:00 - 17:00 1.00 CEMT P 17:00 - 22:00 5.00 CEMT N 22:00 - 00:00 2.00 CEMT P 5/13/2006 100:00 - 00:30 00:30 - 00:45 00:45 - 01:00 01:00 - 03:00 0.50 CEMT P 0.25 CEMT P 0.25 CEMT P 2.00 CEMT P 03:00 - 04:00 04:00 - 07:00 07:00 - 10:00 10:00 - 12:30 12:30 - 13:00 13:00 - 16:00 1.00 CEMT P 3.00 DIVRTR P 3.00 WHSUR P 2.50 BOPSU P 0.50 BOPSU P 3.00 BOPSU P 16:00 - 16:30 0.50. BOPSU~ P 16:30 - 17:00 0.50 DRILL P 17:00 - 18:00 1.00 DRILL P 18:00 - 18:30 0.50 DRILL P INT1 18:30 - 21:00 2.50 DRILL P INT1 21:00 - 22:30 1.50 DRILL P INTi 22:30 - 23:30 1.00 DRILL P INT1 23:30 - 00:00 0.50 DRILL P INT1 5/14!2006 00:00 - 03:00 3.00 DRILL P INT1 03:00 - 04:30 I 1.501 DRILL I P I I INT1 Start: 5/6/2006 Rig Release: 5/31/2006 Rig Number: NPT I Phase SURF SURF SURF SURF WAIT SURF SURF SURF SURF SURF SURF SURF SURF SURF SURF SURF SURF SURF INTi INT1 Page 4 of 15 Spud Date: 5/9/2006 End: 5/31/2006 Description of Operations pup joint on split landing joint. Clear rig floor in preparation for top job. Make up Tam port collar shifting tool. Run in hole with shifting tool on HWDP to 1,011'. Test Tam port collar to 1,000' psi - OK. Bleed off pressure to 500 psi and open Tam port collar. Circulate and condition mud for top job cement. 265 gpm, 415 psi. Circulate at reduced rate while waiting on Dowell due to hours worked with no relief. 89 gpm, 60 psi. Dowell on location filling cement pods and rigging up to cement. Continue circulating at reduced rate. Increase rate to 265 gpm 400 C~ 23:30 hr prior to cement job. Held Top Job PJSM while circulating. Surface cement Top Job. Pump 5 bbls H2O. Pressure test lines to 2,000 psi - OK. Pump 15 bbls H2O, mix and pump 124 bbls, 115 sx 10.7 ppg ArcticSet Lite lead cement ~ 5.5 bpm, 150 psi ICP, 300 psi FCP. Displace cement with 9 bbls H2O. CIP C~ 00:20 hr. Cement returned with 100 bbls away at calculated full gauged hole. Pumped additional 24 bbls cement before displacement. Shift and close Tam Port Collar. Pressure test to 1,000 psi - OK. Jay out of collar and retest to 1,000 psi to verify. Pick up 8 feet and circulate out 1 bbl of cement left in drill pipe @ 12 bpm, 660 psi. Drain cement out of diverter riser and rinse out same. Break out and laydown circulating equipment. POH from 1,004' to surface. Laydown Tam shifting tool. Slowdown surface lines. Make up pup joint on split landing joint. Backout and laydown landing joint. Remove cuttings from drip pan. Nipple down diverter system. Flush annular preventer and knife valve. Change over bell nipple from 20" to 16". Nipple up casing head and tubing spool. Tested head to 1,000 psi - OK. Nipple up BOPE. Install test plug. Rig up to test ROPE. Test BOPE to 250 psi low pressure, 3,500 psi high pressure. Perform Accumulator test (D4). Witnessing of test waived by AOGCC rep. Chuck Scheve. Test witnessed by BP WSL Brian Buzby, NAD TP Kelly Cozby. Rig down and blow down test equipment. Install wear bushing. Pick up single drill pipe from pipe shed to 478'. Cut and slip drilling line 85'. Service topdrive, crown and blocks. POH standing back drill pipe. Pick up single drill pipe from pipe shed to 3,061'. POH standing back drill pipe. Pick up single drill pipe from pipe shed to 957'. POH standing back drill pipe. PJSM on nuclear source. Pick up, make up 8 3/4" (BHA #3). RIH on 4" HWDP to 1,187'. Shallow hole test MWD - OK. Run in hole with BHA #3 on 4" drill pipe from 997' to 3,197' Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Operations Summary Report Legal Well Name: S-121 Common Well Name: S-121 Event Name: DRILL+COMPLETE Contractor Name: NABOBS ALASKA DRILLING Rig Name: NABOBS 9ES Date From - To Hours Task Code NPT 5/14/2006 04:30 - 05:00 0.50 DRILL P 05:00 - 05:30 0.50 DRILL P 05:30 - 06:45 I 1.251 DRILL I P 06:45 - 07:00 0.25 DRILL P 07:00 - 07:30 0.50 DRILL P 07:30 - 08:00 0.50 DRILL P 08:00 - 08:30 0.50 DRILL P 08:30 - 16:30 8.00 DRILL P 16:30 - 17:00 I 0.501 DRILL I P 17:00 - 18:30 I 1.501 DRILL I P 18:30 - 19:30 I 1.001 DRILL I P 19:30 - 00:00 I 4.501 DRILL I P 5/15/2006 100:00 - 00:15 I 0.251 DRILL I P Page 5 of 15 Spud Date: 5/9/2006 Start: 5/6/2006 End: 5/31 /2006 t Rig Release: 5/31/2006 Rig Number: Phase Description of Operations iNT1 Circulate air out of drill pipe and casing. INT1 Pressure test 9 5/8" 40# surface casing to 3,500 psi - 30 minutes - OK. INT1 Wash from 3,197' to float collar on depth at 3,320'. Drill out shoe track from 3,320 to 3,404'. Good cement. Clean out old hole from 3,404' to 3,413'. INT1 Drill 20' new hole from 3,413' to 3,433'. INT1 Displace well to 8.8 ppg LSND mud. 550 gpm, 2,380 psi, 60 rpm, 4.2k TO. INT1 Perform LOT. 3,404' MD, 2,862' TVD, 8.8 ppg MW, 780 psi test pressure = 14.04 EMW. INT1 Obtain benchmarkECD's and slow pump rates. CECD - 9.25 PP9• INT1 Directionally drill 8 3/4" pilot hole from 3,433' to 5,308'. 585 gpm, 2,020 psi off, 2,500 psi on, 80 rpm, 7.2k TO off, 9.2k TO on. PU - 165k, SO - 87k, RT - 113k, WOB - 10-25k. CECD - 9.56 ppg, AECD - 10.34 ppg. INT1 Circulate for ECD's. Pump high vis sweep surface to surface. 10.5 ppg reduced to 10.19 ppg. 585 gpm, 2,050 psi, 80 rpm, 7.2k TO. Slight increase in cuttings when sweep returned to surface. INT1 Directionally drill 8 3/4" pilot hole from 5,308' to 5,691'. 585 gpm, 2,165 psi off, 2,590 psi on, 80 rpm, 7.2k TO off, 9.5k TO on. PU - 165k, SO - 88k, RT - 114k, WOB - 10-25k. CECD - 9.55 ppg, AECD - 10.70 ppg. Backream each stand twice prior to connections. INTi Circulate for ECD's. Pump high vis weighted sweep surface to surface. 10.70 ppg reduced to 10.07 ppg. 585 gpm, 2,150 psi, 80 rpm, 7.2k TO. Sweep brought back big balls of clay to surface. INT1 Directionally drill 8 3/4" pilot hole from 5,691' to 6,170'. 585 gpm, 2,340 psi off, 2,870 psi on, 80 rpm, 6.9k TO off, 8.9k TO on. PU - 165k, SO - 92k, RT - 118k, WOB - 10-20k. CECD - 9.64 ppg, AECD - 10.17 ppg. Backream each stand prior to connections. AST - 5.23 hrs, ART - 1.65 hrs. INT1 Directionally drill 8 3/4" pilot hole from 6,170' to 6,238'. 585 gpm, 2,400 psi off, 2,805 psi on, 80 rpm, 5.5k TO off, 8.2k TO on. PU - 163k, SO - 95k, RT - 120k, WOB - 20k. CECD - 9.64 ppg, AECD - 10.14 ppg. Standpipe washed out at 2" outlet to circulating manifold on rig floor level. 00:15 - 00:45 0.50. DRILL N SFAL INT1 Attempt to POH to shoe to repair stand pipe. Pulled 5 stands to 5,717'. Hole swabbing and pulling over. Unable to pump due to location of washout on standpipe. 00:45 - 01:30 0.75 DRILL N RREP INT1 Repair and test standpipe to 4,000 psi while working pipe slowly. No sticking problems. RIH 5 stands to bottom without problem. 01:30 - 02:30 1.00 DRILL P INT1 Circulate to ensure hole clean prior to drilling ahead. Pumped high vis, weighted sweep surface to surface. 585 gpm, 2,400 psi, 80 rpm, 6.6k TO. Returned large amount of clay early. Calculated cuttings up from 5,787'. CECD - 9.64 ppg, AECD from 10.43 ppg to 9.93 ppg. 02:30 - 12:00 9.50 DRILL P INT1 Directionally drill 8 3/4" pilot hole from 6,238 to 7,396'. 585 Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Operations Summary Report Page 6 of 15 Legal Well Name: S-121 Common Well Name: S-121 Spud Date: 5/9/2006 Event Name: DRILL+COMPLETE Start: 5/6/2006 End: 5/31/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 5/31/2006 Rig Name: NABOBS 9ES Rig Number: Date From - To ; Hours ~ Task Code. NPT ( Phase 5/15/2006 02:30 - 12:00 9.50 DRILL P 12:00 - 00:00 12.00 DRILL P INTi INT1 5/16/2006 100:00 - 01:00 I 1.00 f DRILL (P I I INT1 01:00 - 01:30 0.50 DRILL N SFAL INT1 01:30 - 08:30 7.00 DRILL N RREP INT1 08:30 - 09:30 1.00 DRILL N RREP INT1 09:30 - 10:00 0.50 DRILL P INT1 10:00 - 12:30 2.50 DRILL N RREP INT1 12:30 - 13:00 0.50 DRILL N RREP INTi 13:00 - 00:00 5/17/2006 100:00 - 09:00 11.001 DRILL I P I I INTi 9.001 DRILL I P I I INT1 09:00 - 09:30 0.50 DRILL P INTi 09:30 - 15:30 6.00 DRILL P INT1 Description of Operations gpm, 2,815 psi off, 3,200 psi on, 80 rpm, 7.5k TO off, 9.7k TO on. PU - 160k, SO - 110k, RT - 133k, WOB - 20k. CECD - 9.83 ppg, AECD - 10.37 ppg. Pumped high vis, weighted sweep C~ 6,927'. 30% increase in cuttings with sweep back to surface. Cut ECD's from 10.37 ppg to 10.00 ppg. Tour total = AST - 1.3 hrs, ART - 4 hrs. Directionally drill 8 3/4" pilot hole from 7,396 to 8,515'. 585 gpm, 3,100 psi off, 3,570 psi on, 80 rpm, 6.2k TO off, 9.2k TO on. PU - 176k, SO - 122k, RT - 147k, WOB - 10-15k. CECD - 9.94 ppg, AECD - 10.31 ppg. Pumped high vis, weighted sweep C~ 7,862'. 25% increase in cuttings with sweep back to surface. Cut ECD's from 10.37 ppg to 10.00 ppg. Tour total = AST - 2.93 hrs, ART - 4.72 hrs. Total time for day = AST - 4.23 hrs, ART - 8.72 hrs Directionally drill 8 3!4" pilot hole from 8,515 to 8,627'. 585 gpm, 3,100 psi off, 3,570 psi on, 80 rpm, 6.2k TO off, 9.2k TO on. PU - 176k, SO - 122k, RT - 147k, WOB - 10-15k. CECD - 9.94 ppg, AECD - 10.31 ppg. Circulate and reciprocate with one mud pump while trouble shooting #2 mud pump. 252 gpm, 1150 psi. Found pot cracked on mud end. Monitor well - OK. 9.2 ppg MW. POH to shoe from 8,627' to 3.387' to replace mud end and manifold on mud pump #2. Pulled 3 stands, then started swabbing and pulling over. Continued POH pumping out to shoe. 252 gpm, 1,100 psi. Pressure test pump to 4,000 psi - OK. Circulate bottoms up ~ 560 gpm, 1,925 spi, 60 rpm, 3.5k TO, 93k RWT. AECD from 10.37 ppg to 10.2 ppg. Service topdrive. Run in hole from 3,337' to 8,627'. PU - 175k, SO - 122k. No problems. Circulate bottoms up prior to drilling ahead. 585 gpm, 3,300 psi, 80 rpm, 6.2k TO. CECD - 9.64 ppg, AECD - 10.08 ppg. Directionally drill 8 3/4" pilot hole from 8,627 to 9,262'. 565 gpm, 3,810 psi off, 4,150 psi on, 80 rpm, 6k TO off, 8-9kk TO on. PU - 185k, SO - 118k, RT - 145k, WOB - 10-15k. CECD - 9.94 ppg, AECD - 10.31 ppg. Weighted up mud system 8,850' from 9.4 ppg to 10.6 ppg by adding weighted Spike fluid. Backream every stand prior to connection. CECD - 11.21 ppg, AECD - 11.36. AST - 5.95 hrs, ART - 3.28 hrs. Currently still in Coleville and have not seen expected fault yet. Directionally drill 8 3/4" pilot hole from 9,262' to TD ~ 10,002' MD, 7,005' TVD. 565 gpm, 3,810 psi off, 4,150 psi on, 80 rpm, 6k TO off, 8-kk TO on. PU - 180k, SO - 120k, RT - 145k, WOB - 10-15k. Backream every stand prior to connections. CECD - 11.22 ppg, AECD - 11.36. 'Top of Kuparuk C C~ 9,344'. Start 50 bbl weighted sweep surface to surface 100' prior to TD. Circulate 15 min to move cuttings up hole and away from BHA. Monitor well - OK. 10.6 ppg MW. Backream out of hole from 10,002' to 6,528' putting ghost reamer in casing. 540 gpm, 3,865 psi, 90 rpm, 6.5k TO. Pulled 3 stands without pumping from 6,528' to 6,265'. No problems. Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Operations Summary Report Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: Date .From - To 5/17/2006 '~ 15:30 - 18:30 S-121 S-121 DRILL+COMPLETE NABOBS ALASKA DRILLING I NABOBS 9ES Start: 5/6/2006 Rig Release: 5/31/2006 Rig Number: ` Hours Task ~ Code NPT Phase ~, ~__ _ __ 1 3.OO~DRILL P ~ ~INT1 18:30 - 20:30 2.00 DRILL P INT1 20:30 - 21:00 0.50 DRILL P INT1 21:00 - 21:30 0.50 BOPSU P INT1 21:30 - 22:30 1.00 BOPSU P INT1 22:30 - 23:00 0.50 BOPSU P INT1 23:00 - 00:00 I 1.001 CASE I P I I INT1 5/18/2006 ~ 00:00 - 02:30 ~ 2.50 ~ CASE ~ P ~ ~ INT1 02:30 - 03:30 1.00 ~ CASE ~ P ~ ~ INTi 03:30 - 04:00 ~ 0.50 ~ CASE ~ P ~ ~ INT1 04:00 - 05:00 I 1.001 CASE I N I RREP I INT1 05:00 - 09:00 I 4.001 CASE I P I I INT1 09:00 - 10:00 { 1.001 CASE I P I 1 INT1 10:00 - 00:00 ~ 14.00 ~ CASE ~ P ~ ~ INT1 Page 7 of 15 Spud Date: 5/9/2006 End: 5/31 /2006 Description of Operations Monitor well - OK. Pump dry job. POH from 6,265' to 254'. No problems. PJSM on nuclear source. Laydown BHA #4. Clear and clean rig floor. Pull wear bushing, rinse out BOP stack. Change top pipe rams from 3.5" x 6" VBR's to 7". Pressure test ram door seals to 3,500 psi - OK. Rig down test equipment. Make dummy run with 7" hanger and landing joint. Rig up to run 7" casing. PJSM. Pick up, make up 7" shoe track with Baker Lok. Rig up casing fill-up tool. Check floats - OK. Continue RIH with total of 30 jts 7" 26# L-80 BTC-M casing to 1,227'. BTC-M make up torque - 8,600 ft/Ibs, lubricated with Best-O-Life 2000 NM. Fill every joint with casing fill-up tool. Make up crossover pup joint to TCII. Change to TCII equipment, rig up torque-turn. Continue RIH with 7" 26# L-80 BTC-M x TCII casing to 1,570'. Torque-Turn TCII connections to 10.1 k fUlbs torque. Lubricated connections with Jet Lube Sealguard. Fill every joint. 80 fpm running speed. Change out dump valve on Torque-Turn hydraulic system. Ran 1 joint and had seal failure on casing tongs. Change out tongs. Continue RIH with 7" 26# L-80 BTC-M x TCII casing from 1,610 to shoe @ 3,404'. Fill every joint. 80 fpm running speed. Slowed down prior to reaching shoe when hole started taking small amount of fluid. Lost total of 14 bbls while tripping to the 9 5/8 casing shoe. Circulate 1 112 times bottoms up. 2 bpm, 320 psi. 3 bpm, 410 psi. 6 bpm, 440 psi. PU - 120k, SO - 95k. No mud losses during circulation operations at shoe. Continue RIH with 7" 26# L-80 BTC-M x TCII casing from 3,404' to planned casing depth C 9,993'. 40 fpm running speed. Fill every joint, break circulation every 5 joints, circulate down every 10 joints. Circulated bottoms up ~ -6,500' by circulating down 3 joints slowly. Ran in hole without problems and minimal mud loss. Lost 18 bbls from shoe to bottom, 32 bbls total for trip in. Ran total of: 30 jts BTC-M 219 jts TCII 136 - 7 1/8" x 8 1/4" Rigid Staight Blade Centralizers. Float Shoe @ 9,993' Tops: Float Collar @ 9,949' Baffle Collar C~3 9,908' BTC-M x TCII XO pup @ 8,742' HES Cementer @ 7,820' 5/19/2006 00:00 - 00:30 0.50 CEMT P INT1 Rig down casing fill-up tool, rig up cementing head. Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Page 8 of 15 Operations Summary Report Legal Well Name: S-121 Common W ell Name: S-121 Spud Date: 5/9/2006 Event Nam e: DRILL+C OMPLE TE Start : 5/6/2006 End: 5/31/2006 Contractor Name: NABOB S ALASK A DRI LLING I Rig Release: 5/31/2006 Rig Name: NABOB S 9ES Rig Number: Date ; From - To ' Hours Task Code ! NPT Phase I erations Descri tion of O ; I p p 5/19/2006 00:30 - 04:00 3.50 CEMT P INT1 Break circulation, slowly bringing up pump to rate of 5 bpm, 730 psi ICP, 650 psi FCP. Reciprocate pipe in 15' strokes. PU - 240k, SO - 140k. Circulate and condition mud for total of 4 bottoms up, YP C~ 16. Held cement PJSM while circulating. 04:00 - 07:00 3.00 CEMT P INT1 Line up to Dowell. Pump 5 bbls water. Pressure test lines to 4000 psi. Mix and pump 40 bbls Dowell MudPush II viscosified spacer weighted to 11.0 ppg C~ 4.6 bpm, 560 psi ICP, 490 psi FCP. Drop Bottom Bypass Plug and load top plug in head. Mix and pump 37 bbls Dowell LiteCRETE Cement ~ 12.5 ppg followed by 43.4 bbls Dowell Premium G Cement @ 15.8 ppg. Clean out lines to Tee. Switch to rig. Drop top plug and kick out same with mud. Displace cement with 380 bbls of 10.6 ppg mud. Pumped to catch the falling cement and then maintained 5 bpm, 325 psi ICP, 825 psi FCP. Dropped the rate to 2 bpm 5 bbls. prior to plug reaching the cementer and for the final 40 bbls prior to bumping the plug. 2 bpm, 500 psi ICP, 800 psi, FCP. Bumped plug with 1500 psi with calculated strokes ~ 94%. CIP ~ 06:40 hr. Bleed off pressure and check floats - OK. Load HES Cementer closing plug in cement head. Pressure up to 3,300 psi and shear out ES Cementer. 'Reciprocated pipe throughout cement job until last 11.5 bbls prior to bumping plug' 07:00 - 08:30 1.50 CEMT P INTi Stage pump up to 5 bpm, 645 psi. Circulated 1st bottoms up and dumped 70 bbls of cement contaminated mud. Continue circulate and condition mud for 2nd stage cement for additional bottoms up. 08:30 - 15:00 6.50 CEMT P INT1 Continue circulating at reduced rate while waiting on 1st stage compression strength to reach 500 psi. 1.5 bpm, 235 psi. Brought rate back to 5 bpm, 500 psi for bottoms up prior to 2nd stage cement job. Held cement PJSM while circulating. 15:00 - 17:00 2.00 CEMT P INT1 Line up to Dowell. Pump 5 bbls water. Pressure test lines to 4000 psi. Pump 60 bbls CW-100 unweighted spacer, 5.6 bpm, 590 psi ICP, 720 FCP. Mix and pump 41.4 bbls Dowell MudPush II viscosified spacer weighted to 11.0 ppg @ 4.6 bpm, 630 psi ICP, 580 psi FCP. Mix and pump 73.6 bbls Dowell LiteCRETE Cement @ 12.5 ppg followed by 40.6 bbls Dowell Premium G Cement @ 15.8 ppg. Drop closing plug and kick out same with 5 bbls of water. Switch to rig. Displace cement with 294 bbls of 10.6 ppg mud. Pumped to catch the falling cement and then maintained 5 bpm, 230 psi ICP, 590 psi FCP. Dropped the rate to 2 bpm 5 bbls for the final 40 bbls prior to bumping the plug. 2 bpm, 500 psi ICP, 820 psi, FCP. Bumped plug with 1500 psi with calculated strokes ~ 94%. CIP @ 17:05 hr. Pressure up to 2,600 psi and close ES Cementer. Check for flowback - OK. 17:00 - 18:00 1.00 CEMT P INT1 Slowdown lines, rig down cement and casing equipment. Laydown landing joint. 18:00 - 19:00 1.00 WHSUR P INT1 Install and pressure test 7" x 9 5/8" packoff to 5,000 psi - OK. 19:00 - 19:30 0.50 EVAL P INT1 Perform 9 5/8" x 7" annulus LOT. 2,862 TVD, 10.6 MW, 425 psi, 14.46 EMW. Injected 2.9 bbls ~ 2.5 bpm, 525 psi. 19:30 - 20:30 1.00 BOPSU P INT1 Change top pipe rams from 7" to 3.5" x 6" VBR's. Pressure test door seals to 3,500 psi - OK. Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Operations Summary Report Legal Well Name: S-121 Common We11 Name: S-121 Event Name: DRILL+COMPLETE Contractor Name: NABOBS ALASKA DRILLING Rig Name: NABOBS 9ES Date ~ From- To Hours ~,~Task Code I NPT 5/19/2006 E20:30 - 21:00 ~ 0.50 I BOPSUN P ~ I~ Start: 5/6/2006 Rig Release: 5/31/2006 Rig Number: Phase INT1 21:00 - 21:30 0.50 BOPSU P INT1 21:30 - 22:00 0.50 CASE P INT1 22:00 - 00:00 2.00 CLEAN P WEXIT 5/20/2006 010:00 - 03:00 2.00 CLEAN P ~ WEXIT WEXIT 03:00 - 05:00 2.00 CLEAN P WEXIT 05:00 - 06:30 1.50 CLEAN P WEXIT 06:30 - 07:30 I 1.001 CLEAN I P I I WEXIT 07:30 - 09:00 ~ 1.50 ~ CLEAN ~ P ~ I W EXIT 09:00 - 10:30 I 1.50 ~ CLEAN ~ P ~ ~ W EXIT 10:30-15:00 4.50 CLEAN P WEXIT 15:00 - 16:00 1.00 CLEAN P WEXIT 16:00 - 16:30 I 0.50 I CLEAN I P I I W EXIT 16:30 - 17:00 0.50 STWHIP P WEXIT 17:00-19:00 2.00 STWHIP P WEXIT 19:00 - 20:00 I 1.001 STWHIPI N I DFAL I WEXIT 20:00 - 21:00 I 1.001 STWHIP N DFAL WEXIT 21:00 - 22:30 1.50 STWHIP P WEXIT 22:30 - 23:00 0.50 STWHIP P WEXIT 23:00 - 00:00 1.00 FISH N DFAL WEXIT 5/21/2006 00:00 - 00:30 0.50 FISH N DFAL WEXIT 00:30 - 01:30 1.00 FISH N SFAL WEXIT 01:30 - 02:00 0.50 FISH N HMAN WEXIT 02:00 - 04:00 2.00 FISH N HMAN WEXIT 04:00 - 04:30 0.50 FISH N DFAL WEXIT 04:30 - 09:00 I 4.50 I FISH I N I DFAL I W EXIT 09:00 - 10:00 { 1.00 I FISH N I DFAL I W EXIT Page 9 of 15 Spud Date: 5/9/2006 End: 5/31 /2006 Description of Operations Pressure test door seals to 250 psi low, 3,500 psi high - OK. Pu{I test plug. Install wear bushing, laydown test joint. Change out bales. Pick up and make up cleanout BHA (#4). 6 1i8" bit, 2 junk baskets. Run in hole on drill collars and HWDP to 1,054'. Cut and slip drilling line. Service topdrive. RIH with cleanout assembly picking up dri{I pipe from 1,054' to 3,159'. RIH with cleanout assembly from 3,159' to 7,745. Wash from 7,745' to ES Cementer. Drill out ES Cementer ~ 7,820'. 240 gpm, 1,340' psi, 50 rpm, 9.5k TO off, 12.2k TO on. PU - 176k, SO - 87k. Attempted to RIH, had excessive drag. Pump 25 bb! Duo-vis with Super Sweep surface to surface. Metal, rubber and cement returned prior to sweep reaching surface as rate was brought up to 350 gpm and rpms were increased to 120. When the sweep reached surface, it returned some additional cement and small cuttings. Run in hole from 7,745' to top of baffle collar on depth at 9,908'. Pull up to 9,880' Circulate 2 high vis, Super Sweeps, 25 bbls each ~ 340 gpm, 2,720 psi, 120 rpm, 14.2k-15.4k TO, PU - 230k, SO - 93k, RT - 145k. POH from 9,880' to 1,054'. POH with BHA #4. Laydown junk baskets and bit. Dump junk baskets and recover brass pins and cement. Pressure test 7" casing to 3,500 psi - 30 min - OK. (20 psi loss) Rig up Schlumberger E-line. Make up EZSV packer to GR/CCL tool and RIH. Log and correlate with MWD logs. Set packer at 9,364'. Attempt to release from packer without success. Made numerous attempts to work free working E-line up to 11,000 Ib pull. (Maximum safe pull per SLB - 55% of 20,000 Ib rated line) PJSM with Schlumberger. Rig up clamp and T-bar for rig pull. Pull out of rope socket with 13,000 Ib tension. POH with E-line, rig down Schlumberger. Service topdrive. Pick up fishing tools from ground to rig floor. Strap tools. Make up BHA #5. Unable to make up overshot due to galled. threads. Wait on tools from Baker. Attempt to make up fishing tools. Connection between overshot and extension was egged when making up. Wait on tools from Baker. Make up overshot and extension and trip in hole with DC's and HWDP to 1,040'. RIH with fishing assembly from 1,040' to 9,340'. PU - 250k, SO - 92k without pump. Wash down and swallow fish, bottom out @ 9,351. 85 gpm, 750 psi, PU - 235k, SO - 90k while pumping No increase in pump presssure when swallowing fish. Pick up on string with Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Page 10 of 15 Operations Summary Report Legal Well Name: S-121 Common Well Name: S-121 Spud Date: 5/9/2006 Event Name: DRILL+COMPLETE Start: 5/6/2006 End: 5/31/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 5/31/2006 Rig Name: NABOBS 9ES Rig Number: Date From - To j Hours Task j Code NPT Phase 5/21/2006 09:00 - 10:00 1.00 FISH N DFAL WEXIT 10:00-16:00 6.00 FISH N DFAL WEXIT 16:00 - 17:00 1.00 FISH N DFAL WEXIT 17:00 - 18:00 1.00 STWHIP P WEXIT 18:00-00:00 6.00 STWHIP P WEXIT 5/22/2006 00:00-00:30 0.50 STWHIP P WEXIT 00:30-02:00 1.50 STWHIP P WEXIT 02:00-03:30 1.50 STWHIP P WEXIT 03:30-07:30 4.00 STWHIP P WEXIT 07:30-09:00 1.50 STWHIP P WEXIT 09:00-09:30 0.50 STWHIP P WEXIT 09:30 - 10:30 1.00 STWHIP P WEXIT 10:30 - 14:00 3.50 STWHIP P WEXIT 14:00 - 19:30 5.50 STWHIP P WEXIT 19:30 - 21:00 1.50 STWHIP P WEXIT 21:00 - 21:30 0.50 BOPSU P WEXIT 21:30 - 22:00 0.50 BOPSU P WEXIT 22:00 - 00:00 2.00 BOPSU P WEXIT Description of Operations no indication of overpull. (Pins set to shear C~ 40,000) Made several attempts, without rotary and with rotary, with pump and without pump, working over fish without any indications that fish was latched. POH with BHA #5 from 9,351' to 302'. Stand back drill collars. Fish on! Laydown fish and fishing tools. Clear floor. Pick up Baker G2 Whipstock and milling assembly BHA #6. Run in hole slow with Whipstock/milling assembly from 1,113' to 9,329'. Filled pipe at 1,113' - 4,461' - 7,617'. Orient Whipstock C 28 degrees left of high side. 240 gpm, 2,100 psi, PU - 240k, SO - 90k. Set down on depth at 9,364'. Set down 15k to set anchor, pick up 10k over to verify anchor set. Set down 20k to shear lug. Whipstock set for window depths of: Top of window - 9,346', bottom of window - 9,358'. Pick up and check rotating weight (140k) and torque, 45 rpm, 15.3k TO. Clean mud cleaning equipment. Build 50 bbls high vis spacer and 50 bbls Steel EP Lube pill. Displace well from 10.6 ppg LSND to 9.4 ppg Flo-Pro mud. Pump 50 bbls water followed by 9.4 ppg 10% Steel EP Lube pill and 50 bbls 9.4 ppg high viscosity spacer. Pump new Flo-Pro mud pre-treated with 3% tubes surface to surface at 340 gpm, 2,685 psi. Check rotary torque with new mud back to surface - 45 rpm, 4-5k TO. Acquire slow pump rates. Mill window in 7" 26# casing from 9,346' to 9,358'. 345 gpm, 2,530 psi off, 2,510 psi on, 100 rpm, 4-5k TO off, 5.6k TO on, PU - 153k, SO - 112k, RT - 132k, WOB - 3-5k. Drill 20' of new hole from 9,358' to 9,378'. 345 gpm, 2,420 psi off, 2,530 psi on, 100 rpm, 4-5k TO off, 5.6k TO on, PU - 153k, SO - 112k, RT - 132k, WOB - 5-7k. Work through window several times without problem, with and without pumping. Circulate 25 bbl high viscosity Super Sweep surface to surface. 345 gpm, 2,420 psi, 100 rpm, 5k TO. Returned a 25% increase in metal cuttings with sweep back to surface. Perform FIT. 9,346' MD, 6,751' TVD, 9.4 ppg MW, 570 psi surface pressure = 11.0 ppg EMW. Rig down test equipment, blow down surface lines. PJSM on changing out drilling line. Cut and spool off 1,500' old drilling line. Spool and slip on 1,500' of new drilling line. POH with BHA #6 from 9,346' to 375'. On bottom of stand #3 the connection was unscrewed halfway. Rotate drill string to the right @ 50 rpm, 4.5k TO. Continue POH checking make-up torque on every connection. No other loose connections found. Lay down 9 drill collars, MWD and whipstock mills. Upper mill "in gauge". Clear floor. Pick up BOP stack jet sub, clean out and function BOP stack. Rig up to test BOPE. Pull wear bushing. Make up, install test joint and plug. PJSM on testing BOPE. Test BOPE to 250 psi low pressure, 3,500 psi high pressure. Test witnessed by AOGCC rep. John Crisp, BP WSL Robert French, NAD TP Brian Tiedemann. Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Page 11 of 15 Operations Summary Report Legal Well Name: S-121 Common Well Name: S-121 Spud Date: 5/9/2006 Event Name: DRILL+COMPLETE Start: 5/6/2006 End: 5/31/2006 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 5/31/2006 Rig Name: NABORS 9ES Rig Number: Date ~ From - To Hours ~~ Task ~ Code II, NPT Phase ~_ __ 5/23/2006 ~ 00:00 - 01:30 1.501 BOPSUF~ P ~ ~ W EXIT 01:30 - 02:00 I 0.50 I BOPSUp P I I W EXIT 02:00 - 04:30 I 2.501 DRILL I P I I PROD1 04:30 - 10:30 I 6.001 DRILL I P I I PROD1 10:30 - 11:00 0.50 DRILL P PROD1 11:00 - 12:00 1.00 DRILL P PROD1 12:00 - 00:00 I 12.001 DRILL I P I I PROD1 5/24/2006 100:00 - 00:30 I 0.501 DRILL I P I I PROD1 00:30 - 12:00 I 11.501 DRILL I P I I PROD1 12:00 - 00:00 I 12.001 DRILL I P I I PROD1 5/25/2006 100:00 - 12:00 I 12.001 DRILL I P I I PROD1 12:00 - 19:00 7.00 DRILL P PROD1 19:00 - 00:00 5.00 DRILL P PROD1 5/26/2006 100:00 - 05:30 5.501 DRILL P PROD1 05:30 - 06:30 I 1.001 DRILL I P I I PROD1 06:30 - 10:00 I 3.501 DRILL I P I I PROD1 10:00 - 11:30 I 1.501 DRILL I P I I PROD1 Description of Operations PJSM on testing BOPE in Pre Tour meeting. Finish testing BOPE to 250 psi low pressure, 3,500 psi high pressure. Perform Accumulator test (D4). Test witnessed by AOGCC rep. John Crisp, BP WSL Robert French, NAD TP Brian Tiedemann. Rig down BOP test equipment. Slowdown lines. Install wear bushing. PJSM on BHA and nuclear source. Pick up and make up directional drilling BHA # 7. Bit # 5, 1.5 mud motor, NM STAB, Triple Combo MWD. Load source, pick up 2 NM DC's and jars. Run in hole with BHA # 7 from 217 to 1,558'. Shallow test MWD -good. Continue RIH to 9,263', filling pipe at 4,000' and 6,500'. Take SPR's at 9,263' Service the top drive and the crown. Pump a 50 bbl sweep with 10% Steel Lube EP to coat the casing prior to going into the open hole. Drill 6-1/8" ahead directionally from 9,378' to 10,103', PU - 155k, SO - 115k, ROT - 135k, 2,340 psi on, 1,975 psi off, 6.4k TO on, 3.9 TO off, 280 gpm, 60 rpm, AST - 5.17, ART - 3.24. Pump a 25 bbl hi visc sweep. Saw minor increase in cuttings volume across the shakers. Drill 6-1/8" ahead directionally from 10,103' to 10,754', PU - 156k, SO - 112k, ROT - 132k, 2,540 psi on, 2,050 psi off, 5.3k TO on, 3.3 TO off, 275 gpm, 60 rpm, AST - 5.93, ART - 0.95 Drill 6-1/8" ahead directionally from 10,754' to 11,502', PU - 155k, SO - 115k, ROT - 135k, 2,480 psi on, 2,140 psi off, 5.4k TO on, 3.4 TO off, 275 gpm, 60 rpm, AST - 2.58, ART - 6.2 Drill 6-1/8" hole ahead directionally from 11,502' to 12,157', PU - 153k, SO - 110k, ROT - 132k, 2,580 psi on, 2,300 psi off, 5.9k TO on, 3.7 TO off, 275 gpm, 60 rpm, AST - 2.45, ART - 6.07. Drill 6-1/8" hole ahead directionally from 12,157' to 12,533' (TD), PU - 155k, SO - 115k, ROT - 135k, 2,550 psi on, 2,270 psi off, 5.7k TO on, 4.2 TO off, 275 gpm, 60 rpm, AST - 2.33, ART - 3.28. Circulate a 30 bbl weighted sweep while drilling the last stand down in singles. Saw -10% cuttings volume increase across the shakers. MW in - 9.4 ppg, MW out 9.4 PPg• Backream /MAD Pass from 12,533' to 11,130' - 60 rpm, 275 gpm, 2,130 psi, 600 fph max. Backream /MAD Pass from 11,130' to below the window at 9,460'- 60 rpm, 275 gpm, 2,130 psi. POH across the window to 9,263' without rotation, placing the bit above the whipstock Drop the dart and open up the circ sub. Circulate a bottoms up to ensure the hole is clean - 350 gpm, 1,545 psi, 60 rpm. MW in - 9.4 ppg, MW out - 9.4 ppg. Monitor the well -stable. Pump dry job. POH standing back the 4" DP and 4" HWDP to the top of the jars at 217'. PJSM for laying down BHA #7 and removing the nuclear source. LD jars, xo, circ sub and 2 x nm flex dc's. Remove nuclear source. LD ADN, MWD/LWD, nm stab, bypass sub with float, motor and 6-1/8" HCM406. Bit graded: 0-0-WT-A-X-I-ER-TD Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Page 12 of 15 Operations Summary Report Legal We11 Common W Event Nam Contractor Rig Name: Date Name: ell Name: e: Name: From - To S-121 S-121 DRILL+C NABOB NABOB Hours OMPLE S ALASK S 9ES Task TE A DRI Code LING NPT Start I Rig Rig Phase Spud Date: 5/9/2006 : 5/6/2006 End: 5/31/2006 Release: 5/31/2006 Number: Description of Operations 5/26/2006 11:30 - 12:30 1.00 BOPSU P PRODi Pull wear ring. MU 4.5" test joint and test the bottom set of rams to 250 psi / 3,500 psi -good. Install wear ring. 12:30 - 13:30 1.00 CASE P RUNPRD RU 4.5" liner handling equipment. 13:30 - 21:00 7.50 CASE P RUNPRD PJSM for running 4.5" 12.6# L-80 IBT-M liner. MU shoe tract and RIH, check floats -holding. PU liner to 3,370', filling each joint. All connections below the landing collar have been Bakerloc'd and torqued to mark with 3,600 ftlbs. All other connections utilized BOL 2000 NM thread lubricant and torqued to mark with 3,600 ftlbs. 21:00 - 21:30 0.50 CASE P RUNPRD MU crossover and 1 stand of 4" DP from the derrick to 3,486'. Circulate a liner volume to ensure clear - 215 gpm, 330 psi, PU - 75k, SO - 65k. Take SPR's. 21:30 - 00:00 2.50 CASE P RUNPRD RIH with 4.5" liner on 4" DP and 4" HW DP to 6,241' filling pipe every 10 stands. 5/27/2006 00:00 - 01:30 1.50 CASE P RUNPRD RIH with 4.5" liner on 4" DP and 4" HW DP from 6,241' to 9,263' filling pipe every 10 stands. 01:30 - 03:00 1.50 CASE P RUNPRD MU cement head to single and LD in the pipe shed. Circulate bottoms up to ensure clear prior to going into the open hole - 200 gpm, 770 psi, PU - 150k, SO - 115k. 03:00 - 06:00 3.00 CASE P RUNPRD RIH with 4.5" liner on 4" DP and 4" HWDP from 9,263' to 12,511' filling pipe every 10 stands. MU cement head w/single and 10' dp pup joint. RIH and tag bottom at 12,533', PU - 165k, SO - 115k. 06:00 - 07:30 1.50 CASE P RUNPRD Circulate and condition the mud prior to cement job, staging the pumps up to 210 gpm, 1,240 psi. Hold cementing PJSM and batch up cement while circulating. 07:30 - 08:45 1.25 CEMT P RUNPRD Lined up to Schlumberger. Pumped 5 bbls of fresh water ahead. Shut in and pressure tested the lines to 4,000 psi. Bled off pressure and pumped 20 bbls of CW100 at 5 bpm, ICP - 1,200 psi, FCP - 1,265 psi. Pumped 38 bbls of 10.5 ppg Mudpush II spacer at 5 bpm, ICP - 1,130 psi, FCP - 1,120 psi. Pumped 83 bbls of 15.8 ppg Gasblok cement slurry at 5.3 bpm, ICP - 1,195 psi, FCP - 200 psi. Aligned valves and pumped water to wash the cement lines through a "T" on the rig floor. Lined up to the rig, dropped the dart and displaced with 50 bbls of Perf Pill and 9.4 ppg FloPro drilling fluid. Caught the cement after 40 bbls pumped. Continued the displacement at 5 bpm, ICP - 800 psi. FCP - 1,600 psi. Dropped rate to 2 bpm to observe the dart landing in the liner wiping plug with 90 bbls displaced. Brought the rate back up to 5 bpm, 1,600 psi. the pipe was reciprocated until this point when the hanger prematurely set - 5' off bottom. Continued to displace the well at 5 bpm, FCP - 1,700 psi. Dropped the rate to 2 bpm and bumped the plug with 2,414 stks, 3,500 psi, 96% efficiency. CIP 0840. 08:45 - 09:00 0.25 CASE P RUNPRD Set down 60k. Bled off the pressure and checked the floats - holding. Rotate off of the hanger. PU to verify liner released and to expose the dogs. Pressured up to 1,000 psi while pulling up out of the seals. Observed pressure drop off and circulated -20 bbls up the hole. Rotated down with 25 rpm while slacking off with 50k. Good indication of packer set. 09:00 - 09:30 0.50 CEMT P RUNPRD Pull up and position the bottom of the running tool in the middle of the tieback sleeve. Circulated - 15 bbls of high pH 13.8 ppg Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Page 13 of 15 Operations Summary Report Legal Well Common W Event Nam Contractor Rig Name: Date ` Name: ell Name: e: Name: From - To --- S-121 S-121 DRILL+C NABOB NABOBS Hours - _ OMPLE S ALASK 9ES Task -_ TE A DRI Code LING NPT ~ I Start I Rig Rig Phase Spud Date: 5/9/2006 : 5/6/2006 End: 5/31/2006 ReVease: 5/31/2006 Number: Description of Operations --- - _- - -_ 5/27/2006 09:00 - 09:30 0.50 CEMT P __ RUNPRD cement contaminated mud out of the hole at 8 bpm, 2,250 psi. 09:30 - 10:00 0.50 CEMT P RUNPRD LD cement head and single joint of 4" DP. 10:00 - 12:00 2.00 CASE P RUNPRD Displace the well over to 9.4 ppg KCI brine - 375 gpm, 1,700 psi, PU - 150k, SO - 110k. 12:00 - 13:30 1.50 CASE P RUNPRD Cut and slip 73' of drilling line. Service the top drive, blocks and crown. 13:30 - 18:00 4.50 CASE P RUNPRD POH standing back 4" DP. LD 24 joints of 4" HWDP. Continue to POH standing back 4" DP. 18:00 - 18:30 0.50 CASE P RUNPRD Make service breaks on the liner running tool and LD same. Clear the floor. 18:30 - 19:15 0.75 CASE P RUNPRD Line up and pressure test the 7 " x 4.5" to 3,500 psi. Chart and hold for 30 minutes -good. 19:15 - 20:00 0.75 PERFO P OTHCMP RU the rig floor to run DPC perforating guns. 20:00 - 00:00 4.00 PERFO P OTHCMP PU and RIH with pert guns - 2.5" HSD PowerJet Omega, 6spf to 2,672'. 5/28/2006 00:00 - 01:00 1.00 PERFO P OTHCMP RIH with pert guns picking up 23 joints of 2-7/8" PAC to 3,382' 01:00 - 05:30 4.50 PERFO P OTHCMP Changeout the handling tools and crossover to 4" HT40. RIH with pert guns on 4" HT40 from 3,382 to the landing collar C~3 12,443. Pull back up hole so as to position guns with the bottom shot at 12,000 and the top shot at 9,360 with intermittent blank between. Perforated intervals: 9360 - 9520, 9570 - 9630, 9710 - 9840, 9890 - 9940, 9990 - 10180, 10200 - 10380, 10410 - 10500, 10530 - 10580, 10950 - 11070, 11140 - 11250, 11450 - 11490, 11520 - 11560, 11600 - 11650, 11750 - 12000. 05:30 - 06:00 0.50 PERFO P OTHCMP PJSM. Fire the 2.5" PowerJet Omega 6spf perforating guns with the E-fire system. Observe a drop in fluid level of -4 bbls. 06:00 - 07:30 1.50 PERFO P OTHCMP POH to 9,257' standing back 4" DP to get above the top shot. 07:30 - 08:30 1.00 PERFO P OTHCMP Circulate a bottoms up - 250 gpm, 1,075 psi. Shut down and monitor the well -stable. MW in - 9.4 ppg, MW out - 9.4 ppg 08:30 - 14:00 5.50 PERFO P OTHCMP LD 4" DP from 9,257' to 3,386'. 14:00 - 15:30 1.50 PERFO P OTHCMP RU to LD 2-7/8" DP. LD 23 joints of 2-7/8" PAC from 3,386' to 2,672'. 15:30 - 00:00 8.50 PERFO P OTHCMP PJSM. LD spent perforating guns from 2,672' to 848'. LD 86 of 125 guns. Lost 25 bbls of 9.4 ppg brine since perforating. 5/29/2006 00:00 - 02:30 2.50 PERFO P OTHCMP PJSM. LD remaining spent perforating guns from 848' -all shots fired. Clear and clean the floor. 02:30 - 04:30 2.00 PERFO P OTHCMP Change out the handling equipment. R1H with remaining 60 stands of 4" DP from the derrick. 04:30 - 09:00 4.50 PERFO P OTHCMP LD 180 jts of 4" DP. 09:00 - 10:00 1.00 BOPSU P RUNCMP Pull wear ring. Install test plug and RU to test BOPE with 3.5". 10:00 - 11:00 1.00 BOPSU P RUNCMP Test 3.5" x 6" rams -failed. 11:00 - 13:00 2.00 BOPSU N SFAL RUNCMP Remove the 3.5" x 6" variable rams for inspection. Rebuild and reinstall rams. 13:00 - 13:30 0.50 BOPSU N SFAL RUNCMP Test to 250 psi / 3,500 psi for 5 minutes each -good. 13:30 - 14:00 0.50 BOPSU P RUNCMP Pull the test plug and LD the 3.5" test joint. 14:00 - 15:30 1.50 BUNCO RUNCMP Make dummy run with tubing hanger and landing joint. RU to run 3.5" 9.2# 13CR Vam Top tubulars. RU Halliburton 1-wire spool and sheave. Printed: 6/5/2006 11:47:30 AM BP EXPLORATION Page 14 of 15 Operations Summary Report Legal Well Name: S-121 Common Well Name: S-121 Spud Date: 5/9/2006 Event Name: DRILL+COMPLETE Start: 5/6/2006 End: 5/31/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 5/31/2006 Rig Name: NABOBS 9ES Rig Number: Date !From - To Hours ~ Task !Code NPT ~ Phase Description of Operations - i - - 5/29/2006 15:30 - 23:15 7.75 BUNCO RUNCMP PJSM. PU and RIH with 3.5" chrome completion and jewelry to 1,809' Ran WLEG assy, X nipple (2.813" ID) assy, X nipple (2.813" ID) assy w/RHC-m plug, 7" x 4.5" S-3 packer assy, HES Symphony Gauge carrier assy, X nipple (2.813" ID) assy, HES 'XD' Duro sliding sleeve assy, 2 jts of 3.5" 9.2# 13CR Vam Top, 3.5" x 1" KBG2-9 GLM w/DCK assy, 47 jts of 3.5" 9.2# 13CR Vam Top, 3.5" x 1" KBG2-9 GLM w/DV assy, 1 jt of 3.5" 9.2# 13CR Vam Top and 3.5" IBT-M box x Vam Top pin xo. All connections below the packer were Bakerloc'd, all other connections utilized Jet Lube Seal Guard thread lubricant and were torque-turned to 2,900 ftlbs. Check I-wire continuity every 10 joints. Ran 54 full over the collar Cannon clamps and 7 mid joint halt Cannon clamps on the chrome tubulars. 23:15 - 00:00 0.75 BUNCO RUNCMP Changeout the handling equipment from 13CR, Vam Top tubing to L-80, IBT-m tubing. 5!3012006 00:00 - 04:00 4.00 BUNCO RUNCMP PU and RIH with 3.5" 9.2# L-80 IBT-m tubulars to 4,429'. Ran 26 jts of 3.5" 9.2# L-80 IBT-m, Top, 3.5" x 1" KBG2-9 GLM w/DV assy, 54 jts of 3.5" 9.2# L-80 IBT-m, 3.5" x 1" KBG2-9 GLM w/DV assy, 1 jt of 3.5" 9.2# L-80 IBT-m. All connections utilized BOL2000NM thread lubricant and were torqued to the mark with 2,200 ftlbs. Check I-wire continuity every 10 joints. Ran 83 full over the collar Cannon clamps and 6 mid joint half Cannon clamps over the 3.5" L-80. Ran a total of 81 jts of 3.5" 9.2# L-80 IBT-m tubulars. 04:00 - 09:00 5.00 BUNCO RUNCMP Changeout the handling tools. Crossover, PU and RIH with the 4.5" 12.6# L-80 IBT-m tubulars to 7,006'. All connections utilized BOL2000NM thread lubricant and were torqued to the mark with 2,200 ftlbs. Check I-wire continuity every 10 joints. 09:00 - 09:30 0.50 BUNCO P RUNCMP While picking up the X nipple assy, the elevators did not latch fully allowing the X nipple to fall. Shut down the operations and for investigation and safety meeting. 09:30 - 12:00 2.50 BUNCO RUNCMP Continue PU and RIH with the 4.5" 12.6# L-80 IBT-m tubulars to 9,186'. All connections utilized BOL2000NM thread lubricant and were torqued to the mark with 3,200 ftlbs. Check 1-wire continuity every 10 joints. Ran 116 full over the collar Cannon clamps over the 4.5" L-80. Ran a total of 113 joints of 4.5" 12.6# L-80 IBT-m tubing. 12:00 - 14:30 2.50 BUNCO P RUNCMP Spaceout completion. MU hanger and terminate the I-wire. Feed through and test -good. Land the tubing on the hanger, PU - 135k, SO - 82k. RILDS with 450 ftlbs of torque. 14:30 - 17:30 3.00 BUNCO RUNCMP RU the circulation lines and pump 167 bbls of clean 9.4 ppg brine to clear the tubing, chased by 6 bbls of 9.4 ppg brine with CI and followed with 199 bbls of clean 9.4 ppg brine to spot the CI between the DCK (8,955') and the tubing tail (9,186'). 17:30 - 19:30 2.00 BUNCO RUNCMP Drop 1-5/16" ball and roller stem and allow to seat in the RHC-m plug in the X nipple at 9,135'. Pressure up on the tubing to 3,500 psi to set the packer, chart and hold for 30 minutes -good. Bleed pressure to 1,500 psi. Pressure up on the annulus to 3,500 psi, chart and hold for 30 minutes -good. Bleed off the annular pressure followed by the tubing pressure. Pressure up on the annulus and observe the DCK-3 in the GLM at 8,955 shear with 2,300 psi differential from annulus to tubing. Pump across in both directions -good. LD the landing Printed: 6/5/2006 11:47:30 AM BP EXPLORAT{ON Page 15 of 15 Operations Summary Report Legal Well Name: S-121 Common Well Name: S-121 Spud Date: 5/9/2006 Event Name: DRILL+COMPLETE Start: 5/6/2006 End: 5/31/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 5/31/2006 Rig Name: NABOBS 9ES Rig Number: Date From - To 'Hours Task Code NPT Phase Description of Operations 5/30/2006 17:30 - 19:30 2.00 RUNCO~P RUNCMP joint. Install TWC and test from below with 1,000 psi -good. 19:30 - 21:00 1.50 BOPSU P RUNCMP Pull the mouse hole, remove the riser and remove the 21:00 - 00:00 I 3.001 WHSUR I P 5/31/2006 00:00 - 01:30 1.50 WHSUR P 01:30 - 02:00 0.50 WHSUR P 02:00 - 05:30 3.50 WHSUR P 05:30 - 07:00 I 1.501 W HSUR I P turnbuckles. ND the BOP stack and secure on the pedestal. RUNCMP Dress the hanger and NU the adapter flange. Terminate the I wire through the adapter flange and verify continuity, Test the metal to metal seal to 5,000 psi and hold for 10 minutes -good. RUNCMP NU the temporary tree and test to 5,000 psi -good. RUNCMP RU DSM lubricator and pull TWC. RUNCMP RU LRHOS and freeze protect the well with 167 bbls of diesel. Shut in and allow to u-tube. RUNCMP Install BPV with DSM lubricator and test from below to 1,000 psi -good. Install VR plugs. RD LRHOS. Secure the well. Release the rig to L-51 @ 0700 Printed: 6/5/2006 11:47:30 AM by ~+ ~ ,;,, S-121 PB1 Su Client: BP Exploration Alaska Field: Prudhoe Bay Unit - WOA Structure /Slot: S-PAD / S-121 Well: 5-121 Borehole: S-121P61 UWUAPI#: 500292330470 Survey Name /Date: S-121 PB1 /May 17, 2006 Tort /AHD / DDI / ERD ratio: 168.306° / 6682.27 ft / 6.206 / 0.954 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location LaVLong: N 70.35526849, W 149.03416815 Location Grid N/E Y/X: N 5980460.120 ftUS, E 618929.810 ftUS Grid Convergence Angle: +0.90962563° ort Schlumberger Vertical Section Azimuth: 359.980° Vertical Section Origin: N 0.000 ft, E 0.000 ft TVD Reference Datum: Rotary Table TVD Reference Elevation: 64.20 ft relative to MSL Sea Bed /Ground Level Elevation: 35.70 ft relative to MSL Magnetic Declination: 24.381 ° Total Field Strength: 57592.812 nT Magnetic Dip: 80.893° Declination Date: May 15, 2006 Magnetic Declination Model: BGGM 2005 North Reference: True North Total Corr Mag North -> True North: +24.381 ° Comments Measured Inclination Azimuth Subsea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de tt ft tt n n n tt de oo n nus nus hi I t U.UU U.UU U.UU GYD GC MS 100.00 0.28 150.83 200.00 0.34 118.40 300.00 2.20 78.41 400.00 4.70 77.96 500.00 7.68 85.84 600.00 11.42 87.38 700.00 14.70 89.25 800.00 15.97 88.56 Last GYD GC MS 900.00 18.70 85.34 MWD+IFR+MS 938.29 20.54 84.68 1032.81 23.93 82.79 1126.33 25.98 82.96 1219.27 27.93 77.88 1312.62 28.86 73.42 1405.89 28.84 70.72 1499.71 30.90 65.54 1593.38 30.37 63.22 1685.79 31.54 59.96 1783.07 33.77 54.88 1876.64 36.34 49.56 1968.23 39.07 42.78 2062.85 38.47 37.71 -64.'LU U.UU U.UU U.UU U.UU U.UU U.UU U.UU byrSV4bV.lZ 35.80 100.00 -0.21 0.24 0.24 -0.21 0.12 0.28 5980459.91 135.80 200.00 -0.57 0.77 0.76 -0.57 0.50 0.18 5980459.56 235.77 299.97 -0.32 2.94 2.66 -0.32 2.64 1.95 5980459.84 335.58 399.78 0.91 8.96 8.58 0.92 8.53 2.50 5980461.17 434.99 499.19 2.25 19.72 19.33 2.26 19.20 3.09 5980462.68 533.59 597.79 3.18 36.31 35.90 3.19 35.76 3.75 5980463.88 630.99 695.19 3.79 58.90 58.47 3.81 58.35 3.31 5980464.86 727.42 791.62 4.30 85.35 84.90 4.32 84.79 1.28 5980465.79 822.87 887.07 5.93 115.13 114.68 5.97 114.52 2.89 5980467.91 858.94 923.14 7.05 127.99 127.53 7.09 127.33 4.84 5980469.23 946.42 1010.62 10.98 163.75 163.24 11.04 162.87 3.67 5980473.74 1031.20 1095.40 15.86 203.20 202.65 15.93 202.02 2.19 5980479.25 1114.05 1178.25 22.91 245.31 244.60 23.00 243.51 3.25 5980486.98 1196.18 1260.38 33.92 289.68 288.50 34.02 286.48 2.48 5980498.68 1277.88 1342.08 47.75 334.68 332.75 47.87 329.29 1.40 5980513.21 1359.25 1423.45 65.19 381.38 378.27 65.32 372.59 3.52 5980531.34 1439.84 1504.04 85.80 429.11 424.42 85.95 415.63 1.38 5980552.65 1519.10 1583.30 108.42 476.63 470.12 108.58 457.41 2.21 5980575.93 1601.01 1665.21 136.70 529.09 519.90 136.88 501.56 3.63 5980604.93 1677.62 1741.82 169.64 582.80 569.85 169.83 543.95 4.26 5980638.55 1750.11 1814.31 208.44 638.77 620.37 208.64 584.23 5.42 5980677.99 1823.90 1888.10 253.61 698.00 672.26 253.83 622.50 3.41 5980723.77 b1 C~Ly.t51 IV /V.JOOLbt54y VV 74y.UJ41 bi51b 618929.93 N 70.35526791 W 149.03416719 618930.32 N 70.35526694 W 149.03416410 618932.46 N 70.35526760 W 149.03414671 618938.32 N 70.35527099 W 149.03409890 618948.97 618965.51 618988.08 619014.51 619044.21 619057.00 619092.47 619131.53 619172.91 619215.69 619258.27 619301.29 619343.98 619385.40 619429.09 619470.95 619510.61 619548.15 N 70.35527465 W 149.03401223 N 70.35527721 W 149.03387777 N 70.35527890 W 149.03369440 N 70.35528030 W 149.03347971 N 70.35528480 W 149.03323825 N 70.35528787 W 149.0336 N 70.35529864 W 149.03 N 70.35531200 W 149.03 8 N 70.35533130 W 149.03219086 N 70.35536141 W 149.03184192 N 70.35539924 W 149.03149431 N 70.35544691 W 149.03114272 N 70.35550326 W 149.03079327 N 70.35556507 W 149.03045399 N 70.35564237 W 149.03009544 N 70.35573240 W 149.02975122 N 70.35583842 W 149.02942410 N 70.35596185 W 149.02911336 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121 P61\S-121 PB1 Generated 6/15/2006 3:43 PM Page 1 of 4 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft n n ft ft ft de 00 ft ftUS ftUS 2155.73 37.33 35.38 1891.19 1961.39 299 .42 755.05 721.63 299.65 656.48 1.9/ 598U/7U.12 619581.39 N 70.356U87U2 W 149.02883741 2248.73 38.83 30.24 1970.41 2034.61 347 .60 812.38 770.48 347.84 687.50 3.77 5980818.80 619611.64 N 70.35621867 W 149.02858548 2342.41 42.09 23.39 2041.72 2105.92 401 .82 873.12 820.10 402.07 714.77 5.88 5980873.45 619638.05 N 70.35636682 W 149.02836395 2435.28 42.23 16.21 2110.60 2174.80 460 .39 935.41 868.14 460.64 735.86 5.19 5980932.35 619658.20 N 70.35652682 W 149.02819272 2527.67 41.68 11.70 2179.32 2243.52 520 .29 997.16 913.57 520.55 750.76 3.32 5980992.48 619672.14 N 70.35669048 W 149.02807167 2621.84 42.44 6.56 2249.26 2313.46 582 .53 1060.22 958.32 582.80 760.74 3.74 5981054.87 619681.14 N 70.35686053 W 149.02799056 2715.61 42.50 0.10 2318.46 2382.66 645 .67 1123.50 1000.78 645.93 764.41 4.65 5981118.05 619683.80 N 70.35703301 W 149.02796069 2808.88 43.02 356.04 2386.95 2451.15 708 .93 1186.81 1041.16 709.19 762.27 3.01 5981181.26 619680.66 N 70.35720583 W 149.02797804 2901.98 45.44 347.45 2453.72 2517.92 773 .06 1251.68 1079.27 773.32 752.86 6.94 5981245.23 619670.23 N 70.35738102 W 149.02805441 2995.59 45.31 347.25 2519.47 2583.67 838 .07 1318.31 1117.06 838.33 738.27 0.21 5981309.99 619654.61 N 70.35755861 W 149.02817284 3088.37 47.36 348.00 2583.53 2647.73 903 .63 1385.42 1158.02 903.88 723.89 2.29 5981375.30 619639.20 N 70.35773771 W 149.0 3180.88 47.12 347.85 2646.34 2710.54 970 .05 1453.34 1202.13 970.30 709.68 0.29 5981441.48 619623.94 2 N 70.35791916 W 149.02 3273.98 46.87 348.42 2709.84 2774.04 1036 .68 1521.42 1248.68 1036.93 695.68 0.52 5981507.87 619608.89 N 70.35810118 W 149.02851849 3350.79 47.66 348.19 2761.96 2826.16 1091 .93 1577.84 1288.81 1092.17 684.25 1.05 5981562.92 619596.58 N 70.35825211 W 149.02861133 3437.90 47.42 348.87 2820.77 2884.97 1154 .92 1642.11 1336.13 1155.15 671.47 0.64 5981625.69 619582.80 N 70.35842417 W 149.02871507 3507.41 47.29 347.48 2867.86 2932.06 1204 .96 1693.23 1374.55 1205.19 660.99 1.48 5981675.55 619571.53 N 70.35856088 W 149.02880011 3607.78 47.21 349.04 2935.99 3000.19 1277 .13 1766.94 1431.41 1277.35 645.99 1.14 5981747.46 619555.39 N 70.35875802 W 149.02892185 3703.65 47.54 347.76 3000.92 3065.12 1346 .23 1837.48 1487.32 1346.45 631.81 1.04 5981816.31 619540.11 N 70.35894679 W 149.02903701 3799.01 47.83 347.82 3065.11 3129.31 1415. 15 1907.99 1543.96 1415.37 616.90 0.31 5981884.98 619524.11 N 70.35913507 W 149.02915808 3895.16 47.76 347.80 3129.71 3193.91 1484. 77 1979.21 1602.31 1484.98 601.86 0.07 5981954.34 619507.97 N 70.35932526 W 149.02928017 3990.92 47.76 347.78 3194.08 3258.28 1554. 07 2050.11 1661.38 1554.28 586.86 0.02 5982023.38 619491.88 N 70.35951456 W 149.02940190 4086.86 48.21 346.99 3258.30 3322.50 1623. 63 2121.39 1721.40 1623.83 571.29 0.77 5982092.68 619475.21 N 70.35970459 W 149.02952830 4183.08 48.15 347.11 3322.45 3386.65 1693. 52 2193.09 1782.40 1693.72 555.22 0.11 5982162.29 619458.03 N 70.35989551 W 149.02965877 4279.44 48.39 345.94 3386.59 3450.79 1763. 46 2265.01 1844.02 1763.65 538.47 0.94 5982231.94 619440.17 N 70.36008655 W 149.02979483 4375.97 48.76 346.42 3450.46 3514.66 1833. 75 2337.39 1906.55 1833.93 521.18 0.53 5982301.94 619421.77 N 70.36027857 W 149.02993521 4471.58 48.66 346.89 3513.55 3577.75 1903. 66 2409.22 1969.57 1903.83 504.60 0.38 5982371.56 619404.08 N 70.36046953 W 149.03006984 4567.77 48.25 346.54 3577.35 3641.55 1973. 73 2481.22 2033.34 1973.90 488.05 0.51 5982441.35 619386.43 N 70.36066094 W 149.03020417 4663.10 48.25 346.90 3640.83 3705.03 2042. 95 2552.34 2096.86 2043.12 471.72 0.28 5982510.29 619368.99 N 70.36085005 W 149.03033682 4758.70 48.59 347.21 3704.27 3768.47 2112. 65 2623.85 2161.39 2112.81 455.70 0.43 5982579.72 619351.87 N 70.36104045 W 149.03 0 4855.14 46.99 349.12 3769.07 3833.27 2182. 56 2695.28 2226.82 2182.71 441.03 2.21 5982649.37 619336.10 N 70.36123141 W 149.03 4950.30 47.30 349.01 3833.79 3897.99 2251. 06 2765.04 2291.49 2251.20 427.80 0.34 5982717.64 619321.78 N 70.36141853 W 149.0306 41 5046.35 47.23 348.82 3898.97 3963.17 2320. 29 2835.58 2357.12 2320.44 414.24 0.16 5982786.64 619307.12 N 70.36160767 W 149.03080355 5141.85 47.35 349.60 3963.75 4027.95 2389 .23 2905.76 2422.80 2389.37 401.10 0.61 5982855.35 619292.90 N 70.36179599 W 149.03091022 5236.77 47.48 349.23 4027.98 4092.18 2457 .93 2975.64 2488.54 2458.07 388.26 0.32 5982923.83 619278.97 N 70.36198366 W 149.03101447 5332.53 46.59 352.32 4093.25 4157.45 2527 .08 3045.71 2555.18 2527.22 377.02 2.54 5982992.78 619266.63 N 70.36217257 W 149.03110577 5428.29 46.03 351.64 4159.40 4223.60 2595 .65 3114.95 2621.65 2595.78 367.36 0.78 5983061.18 619255.89 N 70.36235989 W 149.03118420 5524.50 46.03 351.46 4226.19 4290.39 2664 .15 3184.19 2688.11 2664.27 357.18 0.13 5983129.50 619244.63 N 70.36254700 W 149.03126682 5620.13 46.16 351.60 4292.51 4356.71 2732 .30 3253.09 2754.37 2732.42 347.04 0.17 5983197.47 619233.40 N 70.36273318 W 149.03134923 5714.52 46.24 350.90 4357.84 4422.04 2799 .64 3321.22 2819.92 2799.75 336.67 0.54 5983264.62 619221.97 N 70.36291713 W 149.03143339 5810.25 46.09 351.07 4424.14 4488.34 2867 .84 3390.28 2886.41 2867.95 325.85 0.20 5983332.64 619210.07 N 70.36310345 W 149.03152126 5906.81 46.87 350.07 4490.64 4554.84 2936 .91 3460.29 2953.80 2937.02 314.38 1.10 5983401.51 619197.50 N 70.36329214 W 149.03161445 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121 P61\S-121 P81 Generated 6/15/2006 3:43 PM Page 2 of 4 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft tt ft ft ft n n de 100 ft ftUS ftUS 6001.83 47 .50 350.41 4555.21 4619 .41 3005.61 3529.99 3020.91 3005.72 302.56 0.71 5983470.00 619184.59 N 70.36347980 W 149.03171040 6097.79 47 .73 350.70 4619 .90 4684 .10 3075.53 3600.87 3089.36 3075 .63 290.93 0.33 5983539.72 619171.86 N 70.36367081 W 149.03180486 6194.07 46 .60 349.53 4685 .36 4749 .56 3145.09 3671.47 3157.52 3145 .19 278.82 1.47 5983609.07 619158.64 N 70.36386083 W 149.03190323 6289.14 47 .20 349.72 4750 .32 4814 .52 3213.38 3740.89 3224.49 3213 .47 266.32 0.65 5983677.14 619145.06 N 70.36404737 W 149.03200476 6384.31 46 .10 347.20 4815 .65 4879 .85 3281.18 3810.09 3290.97 3281 .27 252.49 2.25 5983744.70 619130.16 N 70.36423258 W 149.03211708 6479.45 46 .48 346.77 4881 .40 4945 .60 3348.19 3878.86 3356.65 3348 27 237.00 0.52 5983811.44 619113.61 N 70.36441563 W 149.03224288 6575.67 46 .79 347.11 4947 .47 5011 .67 3416.34 3948.81 3423.57 3416 .41 221.19 0.41 5983879.32 619096.72 N 70.36460179 W 149.03237127 6668.45 47 .25 347.29 5010 .72 5074 .92 3482.53 4016.69 3488.70 3482 .60 206.15 0.52 5983945.26 619080.64 N 70.36478262 W 149.03249341 6762.77 47 .50 347.53 5074 .59 5138 .79 3550.27 4086.09 3555.47 3550 .33 191.03 0.32 5984012.73 619064.44 N 70.36496766 W 149.03261629 6856.46 47 .77 348.13 5137 .72 5201 .92 3617.94 4155.31 3622.30 3618 .00 176.43 0.55 5984080.16 619048.78 N 70.36515252 W 149.03273482 6950.06 48 .44 348.52 5200 .23 5264 .43 3686.18 4224.99 3689.81 3686 .23 162.34 0.78 5984148.15 619033.60 N 70.36533892 W 149.0 3 7043.79 48. 60 347.94 5262. 31 5326 .51 3754.93 4295.21 3757.89 3754. 98 148.01 0.49 5984216.65 619018.18 3 N 70.36552673 W 149.032 9 7137.83 48. 74 347.74 5324. 41 5388. 61 3823.96 4365.82 3826.33 3824. 01 133.14 0.22 5984285.43 61900222 N 70.36571532 W 149.03308652 7231.80 47. 37 347.89 5387. 22 5451. 42 3892.29 4435.72 3894.13 3892. 33 118.38 1.46 5984353.50 618986.38 N 70.36590195 W 149.03320637 7324.46 47 .29 348.52 5450 .03 5514 .23 3958.98 4503.85 3960.40 3959 .02 104.46 0.51 5984419.96 618971.40 N 70.36608415 W 149.03331950 7417.74 46 .33 347.82 5513 .87 5578 .07 4025.55 4571.85 4026.60 4025 .58 90.52 1.17 5984486.29 618956.41 N 70.36626599 W 149.03343274 7511.22 46 .91 348.41 5578 .07 5642 .27 4092.04 4639.80 4092.78 4092 .07 76.53 0.77 5984552.54 618941.36 N 70.36644763 W 149.03354640 7605.01 47. 57 348.17 5641 .75 5705. 95 4159.47 4708.66 4159.97 4159. 49 62.55 0.73 5984619.73 618926.32 N 70.36663183 W 149.03365994 7697.69 46. 72 349.22 5704. 79 5768. 99 4226.10 4776.60 4226.40 4226. 12 49.23 1.24 5984686.12 618911.94 N 70.36681383 W 149.03376817 7791.51 45. 43 350.87 5769. 87 5834. 07 4292.65 4844.17 4292.83 4292. 66 37.54 1.87 5984752.47 618899.20 N 70.36699563 W 149.03386315 7885.10 45. 49 350.67 5835. 52 5899. 72 4358.50 4910.87 4358.59 4358. 51 26.84 0.17 5984818.13 618887.46 N 70.36717551 W 149.03395008 7977.78 45. 79 354.19 5900. 33 5964. 53 4424.17 4977.13 4424.21 4424. 17 18.12 2.73 5984883.64 618877.69 N 70.36735490 W 149.03402094 8070.26 44. 54 358.23 5965. 54 6029. 74 4489.58 5042.69 4489.60 4489. 58 13.76 3.38 5984948.97 618872.30 N 70.36753359 W 149.03405634 8164.00 44. 13 357.51 6032. 59 6096. 79 4555.04 5108.20 4555.06 4555 .04 11.33 0.69 5985014.38 618868.83 N 70.36771243 W 149.03407611 8258.14 44 .45 357.01 6099 .98 6164 .18 4620.70 5173.94 4620.71 4620 .71 8.18 0.50 5985079.98 618864.64 N 70.36789181 W 149.03410165 8350.99 44 .90 356.20 6166 .01 6230 .21 4685.87 5239.22 4685.87 4685 .87 4.31 0.78 5985145.07 618859.74 N 70.36806984 W 149.03413307 8443.83 46 .63 356.55 6230 .77 6294 .97 4752.25 5305.74 4752.25 4752. 25 0.11 1.88 5985211.37 618854.49 N 70.36825119 W 149.03416722 8535.92 48. 67 358.50 6292 .81 6357. 01 4820.24 5373.79 4820.24 4820. 24 -2.81 2.71 5985279.29 618850.49 N 70.36843692 W 149.03419094 8629.92 51. 46 359.15 6353 .14 6417. 34 4892.30 5445.86 4892.30 4892. 29 -4.28 3.02 5985351.31 618847.87 N 70.36863377 W 149.0 8723.81 56. 05 0.34 6408 .64 6472. 84 4967.99 5521.56 4967.99 4967. 99 -4.59 4.99 5985426.99 618846.36 3 N 70.36884057 W 149.03 8818.16 60. 47 0.20 6458 .26 6522. 46 5048.21 5601.78 5048.21 5048. 21 -4.22 4.69 5985507.19 618845.46 N 70.36905972 W 149.03420238 8911.41 64. 29 359.34 6501. 48 6565. 68 5130.82 5684.38 5130.82 5130. 82 -4.56 4.18 5985589.78 618843.81 N 70.36928539 W 149.03420516 9004.49 63. 12 359.34 6542. 72 6606. 92 5214.26 5767.83 521426 5214. 26 -5.52 1.26 5985673.19. 618841.52 N 70.36951334 W 149.03421297 9097.94 63 .28 0.22 6584 .85 6649 .05 5297.67 5851.24 5297.67 5297 .67 -5.84 0.86 5985756.57 618839.88 N 70.36974121 W 149.03421557 9190.23 66 .52 1.75 6624 .00 6688 .20 5381.22 5934.81 5381.22 5381 .22 -4.39 3.82 5985840.13 618840.00 N 70.36996946 W 149.03420377 9282.96 65 .55 1.65 6661 .66 6725 .86 5465.92 6019.54 5465.92 5465 .92 -1.87 1.05 5985924.85 618841.17 N 70.37020084 W 149.03418334 9376.23 68 .26 0.34 6698 .25 6762 .45 5551.69 6105.33 5551.69 5551 .69 -0.39 3.18 5986010.62 618841.29 N 70.37043516 W 149.03417132 9468.53 67 .66 0.54 6732 .88 6797 .08 5637.24 6190.88 5637.24 5637 .24 0.26 0.68 5986096.17 618840.59 N 70.37066888 W 149.03416598 9562.61 67 .46 0.70 6768 .79 6832 .99 5724.19 6277.84 5724.19 5724 .19 1.20 0.26 5986183.12 618840.15 N 70.37090643 W 149.03415834 9655.60 67 .04 0.50 6804 .75 6868 .95 5809.94 6363.59 5809.94 5809. 94 2.10 0.49 5986268.86 618839.69 N 70.37114069 W 149.03415104 9749.44 66 .95 0.90 6841 .43 6905 .63 5896.31 6449.97 5896.31 5896. 31 3.16 0.40 5986355.23 618839.37 N 70.37137664 W 149.03414246 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121 PB1\S-121 PB1 Generated 6/15/2006 3:43 PM Page 3 of 4 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure n de de ft n n n ft n ft de 00 ft nUS nUS 9843.43 67.02 359.91 6878.18 6942.38 5982.81 6536.48 5982.82 5982.82 3.77 0.97 5986441.73 618838.61 N 70.37161296 W 149.03413749 Last MW D+IFR+MS 9930.49 66.77 0.39 6912.34 6976.54 6062.89 6616.56 6062.89 6062.89 3.98 0.58 5986521.79 618837.55 N 70.37183173 W 149.03413579 TD (Projected) 10002.00 66.77 0.39 6940.55 7004.75 6128.60 6682.27 6128.60 6128.60 4.43 0.00 5986587.49 618836.95 N 70.37201124 W 149.03413215 Legal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 4256 FSL 4502 FEL S35 T12N R12E UM 5980460.12 618929.81 BHL : 5105 FSL 4490 FEL S26 T12N R12E UM 5986587.49 618836.95 • • SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121 PB1\S-121 PB1 Generated 6/15/2006 3:43 PM Page 4 of 4 by ~~~,~ ll. 6:t ~ .j:x ~' ~ ,4 f~ ~ S-121 Survey Report Schlumberger Client: BP Exploration Alaska Field: Prudhoe Bay Unit - WOA Structure /Slot: S-PAD / 5-121 Well: S-121 Borehole: S-121 UWUAPI#: 500292330400 Survey Name /Date: S-121 /May 26, 2006 Tort /AHD / DDI / ERD ratio: 300.826° / 9240.17 ft / 6.704 / 1.343 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location LaULong: N 70.35526849, W 149.03416815 Location Grid N/E YIX: N 5980460.120 ftUS, E 618929.810 ftUS Grid Convergence Angle: +0.90962563° Vertical Section Azimuth: 359.980° Vertical Section Origin: N 0.000 ft, E 0.000 ft ND Reference Datum: Rotary Table ND Reference Elevation: 64.20 ft relative to MSL Sea Bed /Ground Level Elevation: 35.70 ft relative to MSL Magnetic Declination: 24.372° Total Field Strength: 57592.853 nT Magnetic Dip: 80.893° Declination Date: May 24, 2006 Magnetic Declination Model: BGGM 2005 North Reference: True North Total Corr Mag North -> True North: +24.372° Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure n de de n n ft it ft n n de 00 n ftUS nUS Fi I t U.UU U.UU U.UU -t)4.LU V.UU U.UU U.UU V.UU U.UU U.UU U.UU byt5U4bU.1-L GYD GC MS 100.00 0.28 150.83 35.80 100.00 -0.21 0.24 0.24 -0.21 0.12 0.28 5980459.91 200.00 0.34 118.40 135.80 200.00 -0.57 0.77 0.76 -0.57 0.50 0.18 5980459.56 300.00 2.20 78.41 235.77 299.97 -0.32 2.94 2.66 -0.32 2.64 1.95 5980459.84 400.00 4.70 77.96 335.58 399.78 0.91 8.96 8.58 0.92 8.53 2.50 5980461.17 500.00 7.68 85.84 434.99 499.19 2.25 19.72 19.33 2.26 19.20 3.09 5980462.68 600.00 11.42 87.38 533.59 597.79 3.18 36.31 35.90 3.19 35.76 3.75 5980463.88 700.00 14.70 89.25 630.99 695.19 3.79 58.90 58.47 3.81 58.35 3.31 5980464.86 800.00 15.97 88.56 727.42 791.62 4.30 85.35 84.90 4.32 84.79 1.28 5980465.79 Last GYD GC MS 900.00 18.70 85.34 822.87 887.07 5.93 115.13 114.68 5.97 114.52 2.89 5980467.91 MWD+IFR+MS 938.29 20.54 84.68 858.94 923.14 7.05 127.99 127.53 7.09 127.33 4.84 5980469.23 1032.81 23.93 82.79 946.42 1010.62 10.98 163.75 163.24 11.04 162.87 3.67 5980473.74 1126.33 25.98 82.96 1031.20 1095.40 15.86 203.20 202.65 15.93 202.02 2.19 5980479.25 1219.27 27.93 77.88 1114.05 1178.25 22.91 245.31 244.60 23.00 243.51 3.25 5980486.98 1312.62 28.86 73.42 1196.18 1260.38 33.92 289.68 288.50 34.02 286.48 2.48 5980498.68 1405.89 28.84 70.72 1277.88 1342.08 47.75 334.68 332.75 47.87 329.29 1.40 5980513.21 1499.71 30.90 65.54 1359.25 1423.45 65.19 381.38 378.27 65.32 372.59 3.52 5980531.34 1593.38 30.37 63.22 1439.84 1504.04 85.80 429.11 424.42 85.95 415.63 1.38 5980552.65 1685.79 31.54 59.96 1519.10 1583.30 108.42 476.63 470.12 108.58 457.41 2.21 5980575.93 1783.07 33.77 54.88 1601.01 1665.21 136.70 529.09 519.90 136.88 501.56 3.63 5980604.93 1876.64 36.34 49.56 1677.62 1741.82 169.64 582.80 569.85 169.83 543.95 4.26 5980638.55 1968.23 39.07 42.78 1750.11 1814.31 208.44 638.77 620.37 208.64 584.23 5.42 5980677.99 2062.85 38.47 37.71 1823.90 1888.10 253.61 698.00 672.26 253.83 622.50 3.41 5980723.77 blifyL`J.tSI N /U.:ibbCb254y W 14y.U:i47bi510 618929.93 N 70.35526791 W 149.03416719 618930.32 N 70.35526694 W 149.03416410 618932.46 N 70.35526760 W 149.03414671 618938.32 N 70.35527099 W 149.03409890 618948.97 N 70.35527465 W 149.03401223 618965.51 N 70.35527721 W 149.03387777 618988.08 N 70.35527890 W 149.03369440 619014.51 N 70.35528030 W 149.03347971 619044.21 N 70.35528480 W 149.03323825 619057.00 N 70.35528787 W 149.03368 619092.47 N 70.35529864 W 149.03 619131.53 N 70.35531200 W 149.03 8 619172.91 N 70.35533130 W 149.03219086 619215.69 N 70.35536141 W 149.03184192 619258.27 N 70.35539924 W 149.03149431 619301.29 N 70.35544691 W 149.03114272 619343.98 N 70.35550326 W 149.03079327 619385.40 N 70.35556507 W 149.03045399 619429.09 N 70.35564237 W 149.03009544 619470.95 N 70.35573240 W 149.02975122 619510.61 N 70.35583842 W 149.02942410 619548.15 N 70.35596185 W 149.02911336 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121\S-121 Generated 6/15/2006 3:43 PM Page 1 of 6 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de n n ft ft ft ft ft de 100 ft ftUS ftUS 1155. /;f J/.:i:f :ib.:Sif ltSy/.ly lytil .:iy 1yy .41 /bb.US /Ll.ti~ Lyy.tiS t75b.4t5 l.y/ b`JtfU//U.11 li1y5251.;Sy N /U.:SSbUtS/U1 W 14`J.U'LiStS;i/41 2248. 73 38.83 30.24 1970 .41 2034 .61 347 .60 812.38 770.48 347.84 687.50 3.77 5980818.80 619611.64 N 70.35621867 W 149.02858548 2342. 41 42.09 23.39 2041 .72 2105 .92 401 .82 873.12 820.10 402.07 714.77 5.88 5980873.45 619638.05 N 70.35636682 W 149.02836395 2435. 28 42.23 16.21 2110 .60 2174 .80 460. 39 935.41 868.14 460.64 735.86 5.19 5980932.35 619658.20 N 70.35652682 W 149.02819272 2527. 67 41.68 11.70 2179 .32 2243 .52 520. 29 997.16 913.57 520.55 750.76 3.32 5980992.48 619672.14 N 70.35669048 W 149.02807167 2621. 84 42.44 6.56 2249 .26 2313 .46 582. 53 1060.22 958.32 582.80 760.74 3.74 5981054.87 619681.14 N 70.35686053 W 149.02799056 2715. 61 42.50 0.10 2318 .46 2382 .66 645. 67 1123.50 1000.78 645.93 764.41 4.65 5981118.05 619683.80 N 70.35703301 W 149.02796069 2808. 88 43.02 356.04 2386. 95 2451 .15 708. 93 1186.81 1041.16 709.19 762.27 3.01 5981181.26 619680.66 N 70.35720583 W 149.02797804 2901. 98 45.44 347.45 2453. 72 2517. 92 773. 06 1251.68 1079.27 773.32 752.86 6.94 5981245.23 619670.23 N 70.35738102 W 149.02805441 2995. 59 45.31 347.25 2519. 47 2583. 67 838. 07 1318.31 1117.06 838.33 738.27 0.21 5981309.99 619654.61 N 70.35755861 W 149.02817284 3088. 37 47.36 348.00 2583. 53 2647. 73 903. 63 1385.42 1158.02 903.88 723.89 2.29 5981375.30 619639.20 N 70.35773771 W 149.02 2 3180. 88 47.12 347,85 2646 .34 2710 .54 970. 05 1453.34 1202.13 970.30 709.68 0.29 5981441.48 619623.94 N 70.35791916 W 149.02 3273. 98 46.87 348.42 2709 .84 2774 .04 1036. 68 1521.42 1248.68 1036.93 695.68 0.52 5981507.87 619608.89 N 70.35810118 W 149.02851849 3350. 79 47.66 348.19 2761 .96 2826 .16 1091. 93 1577.84 1288.81 1092.17 684.25 1.05 5981562.92 619596.58 N 70.35825211 W 149.02861133 3437. 90 47.42 348.87 2820 .77 2884 .97 1154. 92 1642.11 1336.13 1155.15 671.47 0.64 5981625.69 619582.80 N 70.35842417 W 149.02871507 3507. 41 47.29 347.48 2867 .86 2932 .06 1204. 96 1693.23 1374:55 1205.19 660.99 1.48 5981675.55 619571.53 N 70.35856088 W 149.02880011 3607. 78 47.21 349.04 2935. 99 3000 .19 1277. 13 1766.94 1431.41 1277.35 645.99 1.14 5981747.46 619555.39 N 70.35875802 W 149.02892185 3703. 65 47.54 347.76 3000. 92 3065. 12 1346. 23 1837.48 1487.32 1346.45 631.81 1.04 5981816.31 619540.11 N 70.35894679 W 149.02903701 3799. 01 47.83 347.82 3065. 11 3129. 31 1415. 15 1907.99 1543.96 1415.37 616.90 0.31 5981884.98 619524.11 N 70.35913507 W 149.02915808 3895. 16 47.76 347.80 3129. 71 3193. 91 1484. 77 1979.21 1602.31 1484.98 601.86 0.07 5981954.34 619507.97 N 70.35932526 W 149.02928017 3990. 92 47.76 347.78 3194. 08 3258. 28 1554. 07 2050.11 1661.38 1554.28 586.86 0.02 5982023.38 619491.88 N 70.35951456 W 149.02940190 4086. 86 48.21 346.99 3258. 30 3322. 50 1623. 63 2121.39 1721.40 1623.83 571.29 0.77 5982092.68 619475.21 N 70.35970459 W 149.02952830 4183. 08 48.15 347.11 3322. 45 3386. 65 1693. 52 2193.09 1782.40 1693.72 555.22 0.11 5982162.29 619458.03 N 70.35989551 W 149.02965877 4279. 44 48.39 345.94 3386. 59 3450. 79 1763. 46 2265.01 1844.02 1763.65 538.47 0.94 5982231.94 619440.17 N 70.36008655 W 149.02979483 4375. 97 48.76 346.42 3450. 46 3514. 66 1833. 75 2337.39 1906.55 1833.93 521.18 0.53 5982301.94 619421.77 N 70.36027857 W 149.02993521 4471. 58 48.66 346.89 3513. 55 3577. 75 1903. 66 2409.22 1969.57 1903.83 504.60 0.38 5982371.56 619404.08 N 70.36046953 W 149.03006984 4567. 77 48.25 346.54 3577. 35 3641. 55 1973. 73 2481.22 2033.34 1973.90 488.05 0.51 5982441.35 619386.43 N 70.36066094 W 149.03020417 4663. 10 48.25 346.90 3640 .83 3705 .03 2042. 95 2552.34 2096.86 2043.12 471.72 0.28 5982510.29 619368.99 N 70.36085005 W 149.03033682 4758. 70 48.59 347.21 3704 .27 3768 .47 2112. 65 2623.85 2161.39 2112.81 455.70 0.43 5982579.72 619351.87 N 70.36104045 W 149.0 0 4855. 14 46.99 349.12 3769 .07 3833 .27 2182. 56 2695.28 2226.82 2182.71 441.03 2.21 5982649.37 619336.10 3 N 70.36123141 W 149.03 6 4950. 30 47.30 349.01 3833 .79 3897 .99 2251. 06 2765.04 2291.49 2251.20 427.80 0.34 5982717.64 619321.78 N 70.36141853 W 149.03069341 5046. 35 47.23 348.82 3898 .97 3963 .17 2320. 29 2835.58 2357.12 2320.44 414.24 0.16 5982786.64 619307.12 N 70.36160767 W 149.03080355 5141. 85 47.35 349.60 3963. 75 4027. 95 2389. 23 2905.76 2422.80 2389.37 401.10 0.61 5982855.35 619292.90 N 70.36179599 W 149.03091022 5236. 77 47.48 349.23 4027. 98 4092. 18 2457. 93 2975.64 2488.54 2458.07 388.26 0.32 5982923.83 619278.97 N 70.36198366 W 149.03101447 5332. 53 46.59 352.32 4093. 25 4157. 45 2527. 08 3045.71 2555.18 2527.22 377.02 2.54 5982992.78 619266.63 N 70.36217257 W 149.03110577 5428. 29 46.03 351.64 4159 .40 4223 .60 2595. 65 3114.95 2621.65 2595.78 367.36 0.78 5983061.18 619255.89 N 70.36235989 W 149.03118420 5524. 50 46.03 351.46 4226 .19 4290 .39 2664. 15 3184.19 2688.11 2664.27 357.18 0.13 5983129.50 619244.63 N 70.36254700 W 149.03126682 5620. 13 46.16 351.60 4292. 51 4356. 71 2732. 30 3253.09 2754.37 2732.42 347.04 0.17 5983197.47 619233.40 N 70.36273318 W 149.03134923 5714. 52 46.24 350.90 4357. 84 4422. 04 2799. 64 3321.22 2819.92 2799.75 336.67 0.54 5983264.62 619221.97 N 70.36291713 W 149.03143339 5810. 25 46.09 351.07 4424. 14 4488. 34 2867. 84 3390.28 2886.41 2867.95 325.85 0.20 5983332.64 619210.07 N 70.36310345 W 149.03152126 5906. 81 46.87 350.07 4490. 64 4554. 84 2936. 91 3460.29 2953.80 2937.02 314.38 1.10 5983401.51 619197.50 N 70.36329214 W 149.03161445 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121\S-121 Generated 6/15/2006 3:43 PM Page 2 of 6 Comments Measured Inclination Azimuth Sult-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure n de de ft ft n ft n n ft de 00 n ftUS nUS (iUUI.tS:i 4/.5U 3bU.41 4555.'11 4ti1y.41 :iUUb.(il :i5Ly.yy ~U'LU.yI :iUUS./1 3UL.b(i U./1 5yt5:i4/V.UU 6097. 79 47.73 350.70 4619.90 4684.10 3075.53 3600.87 3089.36 3075.63 290.93 0.33 5983539.72 6194. 07 46.60 349.53 4685.36 4749.56 3145.09 3671.47 3157. 52 3145.19 278.82 1.47 5983609.07 6289. 14 47.20 349.72 4750.32 4814.52 3213.38 3740.89 3224. 49 3213.47 266.32 0.65 5983677.14 6384. 31 46.10 347.20 4815.65 4879.85 3281.18 3810.09 3290. 97 3281.27 252.49 2.25 5983744.70 6479. 45 46.48 346.77 4881.40 4945.60 3348.19 3878.86 3356. 65 3348.27 237.00 0.52 5983811.44 6575. 67 46.79 347.11 4947.47 5011.67 3416.34 3948.81 3423. 57 3416.41 221.19 0.41 5983879.32 6668. 45 47.25 347.29 5010.72 5074.92 3482.53 4016.69 3488. 70 3482.60 206.15 0.52 5983945.26 6762. 77 47.50 347.53 5074.59 5138.79 3550.27 4086.09 3555. 47 3550.33 191.03 0.32 5984012.73 6856. 46 47.77 348.13 5137.72 5201.92 3617.94 4155.31 3622. 30 3618.00 176.43 0.55 5984080.16 6950. 06 48.44 348.52 5200.23 5264.43 3686.18 4224.99 3689. 81 3686.23 162.34 0.78 5984148.15 7043. 79 48.60 347.94 5262.31 5326.51 3754.93 4295.21 3757. 89 3754.98 148.01 0.49 5984216.65 7137. 83 48.74 347.74 5324.41 5388.61 3823.96 4365.82 3826. 33 3824.01 133.14 0.22 5984285.43 7231. 80 47.37 347.89 5387.22 5451.42 3892.29 4435.72 3894. 13 3892.33 118.38 1.46 5984353.50 7324. 46 4729 348.52 5450.03 5514.23 3958.98 4503.85 3960. 40 3959.02 104.46 0.51 5984419.96 7417. 74 46.33 347.82 5513.87 5578.07 4025.55 4571.85 4026. 60 4025.58 90.52 1.17 5984486.29 7511. 22 46.91 348.41 5578.07 5642.27 4092.04 4639.80 4092. 78 4092.07 76.53 0.77 5984552.54 7605. 01 47.57 348.17 5641.75 5705.95 4159.47 4708.66 4159. 97 4159.49 62.55 0.73 5984619.73 7697. 69 46.72 349.22 5704.79 5768.99 4226.10 4776.60 4226. 40 4226.12 49.23 1.24 5984686.12 7791. 51 45.43 350.87 5769.87 5834.07 4292.65 4844.17 4292. 83 4292.66 37.54 1.87 5984752.47 7885. 10 45.49 350.67 5835.52 5899.72 4358.50 4910.87 4358. 59 4358.51 26.84 0.17 5984818.13 7977. 78 45.79 354.19 5900.33 5964.53 4424.17 4977.13 4424. 21 4424.17 18.12 2.73 5984883.64 8070. 26 44.54 358.23 5965.54 6029.74 4489.58 5042.69 4489. 60 4489.58 13.76 3.38 5984948.97 8164. 00 44.13 357.51 6032.59 6096.79 4555.04 5108.20 4555. 06 4555.04 11.33 0.69 5985014.38 8258. 14 44.45 357.01 6099.98 6164.18 4620.70 5173.94 4620. 71 4620.71 8.18 0.50 5985079.98 8350. 99 44.90 356.20 6166.01 6230.21 4685.87 5239.22 4685. 87 4685.87 4.31 0.78 5985145.07 8443. 83 46.63 356.55 6230.77 6294.97 4752.25 5305.74 4752. 25 4752.25 0.11 1.88 5985211.37 8535. 92 48.67 358.50 6292.81 6357.01 4820.24 5373.79 4820. 24 4820.24 -2.81 2.71 5985279.29 8629. 92 51.46 359.15 6353.14 6417.34 4892.30 5445.86 4892. 30 4892.29 -4.28 3.02 5985351.31 8723. 81 56.05 0.34 6408.64 6472.84 4967.99 5521.56 4967. 99 4967.99 -4.59 4.99 5985426.99 8818. 16 60.47 0.20 6458.26 6522.46 5048.21 5601.78 5048. 21 5048.21 -4.22 4.69 5985507.19 8911. 41 64.29 359.34 6501.48 6565.68 5130.82 5684.38 5130. 82 5130.82 -4.56 4.18 5985589.78 9004. 49 63.12 359.34 6542.72 6606.92 5214.26 5767.83 5214. 26 5214.26 -5.52 1.26 5985673.19 9097. 94 63.28 0.22 6584.85 6649.05 5297.67 5851.24 5297. 67 5297.67 -5.84 0.86 5985756.57 9190. 23 66.52 1.75 6624.00 6688.20 5381.22 5934.81 5381. 22 5381.22 -4.39 3.82 5985840.13 Tie-In Survey 9282. 96 65.55 1.65 6661.66 6725.86 5465.92 6019.54 5465. 92 5465.92 -1.87 1.05 5985924.85 Top Whipstock (Blind) 9346. 00 67.38 0.76 6686.84 6751.04 5523.70 6077.33 5523. 70 5523.70 -0.66 3.18 5985982.63 Base Whipstock (Blind) 9358. 00 68.65 0.03 6691.33 6755.53 5534.82 6088.46 5534. 82 5534.82 -0.59 11.99 5985993.76 Inc+Trend 9379. 04 68.39 0.31 6699.03 6763.23 5554.40 6108.04 5554. 40 5554.40 -0.53 1.75 5986013.33 Inc+Trend 9401. 74 70.10 0.62 6707.08 6771.28 5575.63 6129.27 5575. 63 5575.63 -0.35 7.64 5986034.56 Inc+Trend 9433. 22 73.59 1.04 6716.88 6781.08 5605.53 6159.17 5605. 53 5605.53 0.08 11.16 5986064.46 lil`J1t54.5`J N /U.3(i34/ytSU W 14y.V31/lU4U 619171.86 N 70.36367081 W 149.03180486 619158.64 N 70.36386083 W 149.03190323 619145.06 N 70.36404737 W 149.03200476 619130.16 N 70.36423258 W 149.03211708 619113.61 N 70.36441563 W 149.03224288 619096.72 N 70.36460179 W 149.03237127 619080.64 N 70.36478262 W 149.03249341 619064.44 N 70.36496766 W 149.03261629 619048.78 N 70.36515252 W 149.03273482 619033.60 N 70.36533892 W 149.033 619018.18 N 70.36552673 W 149.03 9 619002.22 N 70.36571532 W 149.03308652 618986.38 N 70.36590195 W 149.03320637 618971.40 N 70.36608415 W 149.03331950 618956.41 N 70.36626599 W 149.03343274 618941.36 N 70.36644763 W 149.03354640 618926.32 N 70.36663183 W 149.03365994 618911.94 N 70.36681383 W 149.03376817 618899.20 N 70.36699563 W 149.03386315 618887.46 N 70.36717551 W 149.03395008 618877.69 N 70.36735490 W 149.03402094 618872.30 N 70.36753359 W 149.03405634 618868.83 N 70.36771243 W 149.03407611 618864.64 N 70.36789181 W 149.03410165 618859.74 N 70.36806984 W 149.03413307 618854.49 N 70.36825119 W 149.03416722 618850.49 N 70.36843692 W 149.03419094 618847.87 N 70.36863377 W 149.03 618846.36 N 70.36884057 W 149.03 618845.46 N 70.36905972 W 149.034 38 618843.81 N 70.36928539 W 149.03420516 618841.52 N 70.36951334 W 149.03421297 618839.88 N 70.36974121 W 149.03421557 618840.00 N 70.36996946 W 149.03420377 618841.17 N 70.37020084 W 149.03418334 618841.47 N 70.37035869 W 149.03417350 618841.37 N 70.37038909 W 149.03417288 618841.11 N 70.37044258 W 149.03417241 618840.95 N 70.37050056 W 149.03417100 618840.91 N 70.37058226 W 149.03416747 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121\S-121 Generated 6/15/2006 3:43 PM Page 3 of 6 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft tt ft de 100 ft ttUS ftUS MWD+IFR+MS 9464. 50 76.96 1.46 6724.83 6789.03 5635.77 6189.42 5635.77 5635.77 0.74 10.85 5986094.71 618841.09 N 70.37066488 W 149.03416210 9495. 42 78.66 1.87 6731.36 6795.56 5665.98 6219.64 5665.98 5665.98 1.62 5.65 5986124.93 618841.49 N 70.37074740 W 149.03415497 9526. 78 79.29 1.78 6737.36 6801.56 5696.74 6250.43 5696.75 5696.75 2.60 2.03 5986155.70 618841.98 N 70.37083145 W 149.03414700 9557. 32 79.13 2.12 6743.08 6807.28 5726.73 6280.43 5726.73 5726.73 3.62 1.21 5986185.69 618842.52 N 70.37091336 W 149.03413870 9588. 30 79.58 1.26 6748.80 6813.00 5757.16 6310.87 5757.16 5757.16 4.52 3.09 5986216.13 618842.94 N 70.37099650 W 149.03413141 9618. 71 79.99 1.88 6754.19 6818.39 5787.08 6340.80 5787.08 5787.08 5.34 2.42 5986246.06 618843.28 N 70.37107823 W 149.03412474 9650. 30 80.22 2.27 6759.62 6823.82 5818.18 6371.92 5818.18 5818.18 6.46 1.42 5986277.17 618843.92 N 70.37116319 W 149.03411559 9680. 69 79.94 2.70 6764.86 6829.06 5848.08 6401.86 5848.09 5848.09 7.76 1.67 5986307.09 618844.74 N 70.37124490 W 149.03410504 9711. 91 81.86 2.49 6769.79 6833.99 5878.88 6432.68 5878.89 5878.88 9.16 6.19 5986337.90 618845.65 N 70.37132902 W 149.03409370 9743. 55 85.37 1.71 6773.31 6837.51 5910.29 6464.12 5910.31 5910.30 10.31 11.36 5986369.33 618846.30 N 70.37141485 W 149.03408434 9774. 56 88.82 1.09 6774.88 6839.08 5941.25 6495.09 5941.26 5941.25 11.07 11.30 5986400.29 618846.56 N 70.37149942 W 149.03 9806. 03 92.45 1.02 6774.53 6838.73 5972.71 6526.55 5972.72 5972.71 11.64 11.54 5986431.75 618846.64 N 70.37158536 W 149.03 9 9837. 08 94.70 1.17 6772.60 6836.80 6003.69 6557.54 6003.71 6003.69 12.24 7.26 5986462.73 618846.74 N 70.37167000 W 149.03406867 9867. 51 97.48 0.21 6769.37 6833.57 6033.94 6587.79 6033.96 6033.95 12.60 9.66 5986492.99 618846.63 N 70.37175265 W 149.03406571 9898. 50 98.72 359.62 6765.00 6829.20 6064.62 6618.47 6064.64 6064.63 12.56 4.42 5986523.66 618846.09 N 70.37183646 W 149.03406607 9928. 76 98.90 358.72 6760.37 6824.57 6094.52 6648.38 6094.54 6094.52 12.12 3.00 5986553.55 618845.19 N 70.37191814 W 149.03406959 9964. 23 98.72 357.30 6754.94 6819.14 6129.55 6683.43 6129.56 6129.55 10.91 3.99 5986588.55 618843.41 N 70.37201384 W 149.03407948 9995. 74 98.68 357.68 6750.17 6814.37 6160.67 6714.57 6160.68 6160.67 9.54 1.20 5986619.64 618841.56 N 70.37209885 W 149.03409057 10025. 60 98.78 357.80 6745.64 6809.84 6190.16 6744.09 6190.17 6190.16 8.38 0.52 5986649.10 618839.92 N 70.37217942 W 149.03410002 10056. 07 98.86 358.09 6740.97 6805.17 6220.25 6774.20 6220.26 6220.25 7.30 0.98 5986679.17 618838.37 N 70.37226162 W 149.03410880 10087. 11 98.89 357.33 6736.18 6800.38 6250.89 6804.87 6250.90 6250.90 6.07 2.42 5986709.79 618836.66 N 70.37234534 W 149.03411876 10116. 52 99.07 355.56 6731.59 6795.79 6279.89 6833.92 6279.89 6279.89 4.27 5.98 5986738.75 618834.39 N 70.37242454 W 149.03413339 10148. 09 97.94 354.67 6726.92 6791.12 6311.00 6865.14 6311.00 6311.00 1.61 4.54 5986769.81 618831.24 N 70.37250953 W 149.03415500 10179. 30 96.89 355.44 6722.89 6787.09 6341.83 6896.09 6341.83 6341.83 -1.05 4.16 5986800.59 618828.09 N 70.37259376 W 149.03417668 10209. 49 94.86 355.66 6719.80 6784.00 6371.77 6926.12 6371.77 6371.77 -3.38 6.76 5986830.49 618825.28 N 70.37267555 W 149.03419561 10240. 91 92.48 355.88 6717.79 6781.99 6403.04 6957.47 6403.04 6403.04 -5.70 7.61 5986861.71 618822.47 N 70.37276097 W 149.03421441 10271. 73 90.10 355.52 6717.09 6781.29 6433.76 6988.28 6433.77 6433.76 -8.01 7.81 5986892.39 618819.68 N 70.37284490 W 149.03423318 10301. 98 87.89 355.06 6717.62 6781.82 6463.91 7018.52 6463.91 6463.90 -10.49 7.46 5986922.49 618816.71 N 70.37292725 W 149.03425336 10333. 84 85.80 355.69 6719.38 6783.58 6495.61 7050.33 6495.62 6495.61 -13.06 6.85 5986954.14 618813.65 N 70.37301386 W 149.0 10363. 78 84.22 356.59 6721.98 6786.18 6525.37 7080.16 6525.38 6525.37 -15.06 6.07 5986983.86 618811.17 3 N 70.37309516 W 149.03 10395. 26 82.26 356.75 6725.69 6789.89 6556.58 7111.42 6556.59 6556.57 -16.88 6.25 5987015.04 618808.86 N 70.37318041 W 149.03430529 10427. 17 80.22 356.58 6730.55 6794.75 6588.06 7142.95 6588.08 6588.06 -18.71 6.41 5987046.48 618806.52 N 70.37326642 W 149.03432019 10457. 69 77.87 355.37 6736.35 6800.55 6617.95 7172.92 6617.98 6617.94 -20.82 8.63 5987076.33 618803.95 N 70.37334807 W 149.03433728 10488. 24 77.08 355.92 6742.97 6807.17 6647.69 7202.74 6647.72 6647.68 -23.08 3.13 5987106.02 618801.21 N 70.37342931 W 149.03435568 10520. 28 77.82 356.08 6749.93 6814.13 6678.89 7234.01 6678.93 6678.88 -25.26 2.36 5987137.18 618798.53 N 70.37351454 W 149.03437341 10549. 80 78.31 355.49 6756.04 6820.24 6707.69 7262.89 6707.74 6707.68 -27.38 2.56 5987165.94 618795.95 N 70.37359323 W 149.03439067 10581. 95 78.61 355.39 6762.47 6826.67 6739.09 7294.39 6739.15 6739.08 -29.89 0.98 5987197.30 618792.95 N 70.37367901 W 149.03441102 10614. 35 79.46 355.47 6768.63 6832.83 6770.80 7326.20 6770.87 6770.79 -32.42 2.63 5987228.96 618789.91 N 70.37376563 W 149.03443162 10644. 48 82.80 355.28 6773.28 6837.45 6800.47 7355.97 6800.55 6800.46 -34.82 11.10 5987258.58 618787.04 N 70.37384668 W 149.03445113 10675. 64 85.69 356.75 6776.40 6840.60 6831.39 7386.97 6831.48 6831.38 -36.98 10.39 5987289.47 618784.40 N 70.37393116 W 149.03446863 SurveyEditor Ver SP 1.0 Bld( doc4Ox_56) S-121\S-121\S-121\S-121 Generated 6/15/2006 3:43 PM Page 4 of 6 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft it ft ft ft de 00 ft ftUS ftUS lU/U/.t5L ZS/.ytf ;ib/.4y fi//15.125 ti254L.:525 (i25fi:5.425 /41y.1U 111511:1.528 (iti(i:i.4/ -:i25.by /.415 5y2S/:iG1.5L 10738.38 90.22 358.33 6778.66 6842.86 6894.02 7449.65 6894.12 6894.00 -39.71 7.83 5987352.03 10769.35 92.59 359.15 6777.90 6842.10 6924.97 7480.61 6925.07 6924.95 -40.39 8.10 5987382.96 10801.09 94.21 1.89 6776.02 6840.22 6956.65 7512.29 6956.75 6956.63 -40.10 10.02 5987414.64 10831.54 94.05 3.28 6773.82 6838.02 6986.98 7542.66 6987.08 6986.97 -38.73 4.58 5987445.00 10863.36 94.12 4.02 6771.56 6835.76 7018.66 7574.40 7018.74 7018.65 -36.71 2.33 5987476.70 10895.58 94.33 3.15 6769.18 6833.38 7050.73 7606.54 7050.80 7050.72 -34.70 2.77 5987508.79 10925.75 94.69 3.48 6766.81 6831.01 7080.75 7636.61 7080.82 7080.74 -32.96 1.62 5987538.84 10957.56 94.92 3.02 6764.15 6828.35 7112.40 7668.31 7112.46 7112.39 -31.16 1.61 5987570.51 10988.87 94.91 3.76 6761.46 6825.66 7143.54 7699.50 7143.59 7143.53 -29.32 2.35 5987601.67 11019.02 95.27 3.29 6758.79 6822.99 7173.51 7729.54 7173.56 7173.50 -27.47 1.96 5987631.67 11051.10 95.47 3.54 6755.79 6819.99 7205.39 7761.47 7205.43 7205.39 -25.57 1.00 5987663.57 11081.83 95.75 3.77 6752.78 6816.98 7235.91 7792.06 7235.94 7235.91 -23.62 1.18 5987694.12 11112.15 95.44 2.81 6749.83 6814.03 7266.04 7822.23 7266.06 7266.03 -21.89 3.31 5987724.26 11144.82 93.46 2.53 6747.29 6811.49 7298.57 7854.80 7298.59 7298.57 -20.37 6.12 5987756.82 11175.93 91.58 2.57 6745.92 6810.12 7329.62 7885.88 7329.64 7329.61 -18.99 6.04 5987787.88 11206.40 91.22 1.90 6745.18 6809.38 7360.06 7916.34 7360.07 7360.05 -17.80 2.50 5987818.33 11237.35 91.63 2.57 6744.41 6808.61 7390.97 7947.28 7390.99 7390.97 -16.59 2.54 5987849.26 11268.63 91.66 2.26 6743.51 6807.71 7422.21 7978.55 7422.22 7422.21 -15.28 1.00 5987880.51 11299.70 90.32 3.00 6742.98 6807.18 7453.24 8009.61 7453.25 7453.24 -13.85 4.93 5987911.56 11330.68 88.07 4.31 6743.41 6807.61 7484.15 8040.59 7484.16 7484.15 -11.88 8.40 5987942.50 11362.06 86.90 4.73 6744.79 6808.99 7515.40 8071.94 7515.41 7515.40 -9.41 3.96 5987973.78 11392.31 86.82 4.70 6746.44 6810.64 7545.51 8102.14 7545.51 7545.50 -6.92 0.28 5988003.91 11423.20 87.22 4.06 6748.05 6812.25 7576.26 8132.99 7576.26 757626 -4.57 2.44 5988034.70 11455.56 88.51 5.63 6749.26 6813.46 7608.48 8165.33 7608.48 7608.48 -1.84 6.28 5988066.96 11485.77 87.12 7.05 6750.41 6814.61 7638.48 8195.52 7638.48 7638.48 1.50 6.58 5988097.01 11516.00 88.09 7.69 6751.67 6815.87 7668.44 8225.72 7668.44 7668.44 5.37 3.84 5988127.02 11547,84 86.90 8.19 6753.06 6817.26 7699.94 8257.53 7699.95 7699.94 9.77 4.05 5988158.58 11578.43 87.31 8.70 6754.61 6818.81 7730.16 8288.08 7730.17 7730.16 14.25 2.14 5988188.87 11611.86 87.37 9.45 6756.16 6820.36 7763.13 8321.47 7763.16 7763.14 19.52 2.25 5988221.92 11642.58 87.48 9.56 6757.54 6821.74 7793.40 8352.16 7793.44 7793.40 24.59 0.51 5988252.26 11672.55 87.54 9.52 6758.84 6823.04 7822.92 8382.10 7822.99 7822.93 29.55 0.24 5988281.86 11704.37 86.21 8.75 6760.58 6824.78 7854.29 8413.88 7854.38 7854.30 34.59 4.83 5988313.31 11734.79 85.31 8.96 6762.83 6827.03 7884.26 8444.21 7884.37 7884.28 39.26 3.04 5988343.35 11765.98 85.11 7.34 6765.43 6829.63 7915.03 8475.29 7915.16 7915.04 43.67 5.22 5988374.18 11797.18 85.46 6.94 6767.99 6832.19 7945.88 8506.39 7946.04 7945.89 47.53 1.70 5988405.09 1 i 828.50 85.99 6.76 6770.33 6834.53 7976.89 8537.62 7977.07 7976.90 51.26 1.79 5988436.15 11859.37 86.40 6.72 6772.38 6836.58 8007.47 8568.42 8007.68 8007.49 54.87 1.33 5988466.79 11890.89 86.81 6.74 6774.24 6838.44 8038.72 8599.89 8038.95 8038.74 58.56 1.30 5988498.09 11922.35 87.17 6.33 6775.90 6840.10 8069.93 8631.30 8070.19 8069,95 62.14 1.73 5988529.35 11952.98 87.29 6.39 6777.38 6841.58 8100.34 8661.90 8100.62 8100.36 65.53 0.44 5988559.80 11125/ifL.125 N /U.;S/4U1t52S"L W 14y.U:i44251/5 618780.68 N 70.37410224 W 149.03449080 618779.51 N 70.37418679 W 149.03449634 618779.29 N 70.37427333 W 149.03449401 618780.18 N 70.37435622 W 149.03448288 618781.70 N 70.37444275 W 149.03446645 618783.19 N 70.37453036 W 149.03445012 618784.46 N 70.37461239 W 149.03443599 618785.75 N 70.37469885 W 149.03442138 618787.10 N 70.37478392 W 149.03440639 618788.47 N 70.37486580 W 149.03 618789.87 N 70.37495290 W 149.03 618791.33 N 70.37503628 W 149.03 8 618792.59 N 70.37511858 W 149.03434600 618793.59 N 70.37520746 W 149.03433367 618794.48 N 70.37529228 W 149.03432243 618795.18 N 70.37537543 W 149.03431278 618795.90 N 70.37545990 W 149.03430297 618796.72 N 70.37554524 W 149.03429226 618797.65 N 70.37563001 W 149.03428068 618799.13 N 70.37571446 W 149.03426463 618801.11 N 70.37579984 W 149.03424455 618803.11 N 70.37588207 W 149.03422437 618804.98 N 70.37596610 W 149.03420522 618807.20 N 70.37605412 W 149.03418302 618810.05 N 70.37613609 W 149.03415592 618813.45 N 70.37621792 W 149.03412443 618817.34 N 70.37630398 W 149.03408872 618821.35 N 70.37638654 W 149.03405225 618826.09 N 70.37647662 W 149.03 3 618830.68 N 70.37655931 W 149.0339 824 618835.17 N 70.37663998 W 149.03392790 618839.72 N 70.37672568 W 149.03388690 618843.91 N 70.37680756 W 149.03384894 618847.83 N 70.37689161 W 149.03381312 618851.20 N 70.37697590 W 149.03378170 618854.43 N 70.37706062 W 149.03375142 618857.56 N 70.37714418 W 149.03372203 618860.75 N 70.37722955 W 149.03369206 618863.83 N 70.37731482 W 149.03366299 618866.74 N 70.37739788 W 149.03363544 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121\S-121 Generated 6/15/2006 3:43 PM Page 5 of 6 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft tt tt tt it tt de 00 tt ftUS ttUS 11984.05 87. 64 5.94 6778./5 6842.95 8131.LO 8692.94 8131.51 8131.22 68.86 1.83 5988590./1 618869.58 N 7U .37748L19 W 149.03380834 12015.68 87. 98 5.80 6779 .96 6844.16 8162.64 8724.54 8162.98 8162.66 72.09 1.16 5988622.20 618872.31 N 70 .37756808 W 149.03358206 12046.79 88 .20 5.84 6781 .00 6845.20 8193.57 8755.64 8193.94 8193.59 75.24 0.72 5988653.17 618874.97 N 70 .37765259 W 149.03355643 12078.15 88. 51 6.09 6781 .90 6846.10 8224.74 8786.98 8225.15 8224.77 78.50 1.27 5988684.39 618877.74 N 70 .37773776 W 149.03352995 12109.21 86. 79 4.34 6783. 17 6847.37 8255.64 8818.02 8256.07 8255.67 81.32 7.90 5988715.33 618880.07 N 70. 37782218 W 149.03350701 12140.81 85. 47 2.02 6785. 30 6849.50 8287.12 8849.54 8287.57 8287.15 83.07 8.43 5988746.83 618881.32 N 70. 37790818 W 149.03349279 12172.16 86. 03 2.08 6787. 63 6851.83 8318.36 8880.81 8318,82 8318.39 84.19 1.80 5988778.09 618881.94 N 70 .37799353 W 149.03348370 12203.85 86. 46 2.62 6789 .70 6853.90 8349.96 8912.43 8350.43 8349.99 85.49 2.18 5988809.70 618882.73 N 70. 37807984 W 149.03347315 12234.76 87. 41 1.92 6791. 35 6855.55 8380.80 8943.29 8381.28 8380.83 86.71 3.82 5988840.55 618883.47 N 70. 37816410 W 149.03346321 12266.03 87. 96 2.93 6792. 62 6856.82 8412.01 8974.54 8412.51 8412.05 88.03 3.68 5988871.78 618884.29 N 70. 37824938 W 149.03345246 12297.69 87. 31 3.77 6793. 92 6858.12 8443.59 9006.17 8444.10 8443.62 89.88 3.35 5988903.38 618885.64 N 70. 37833565 W 149.033 3 12327.84 85. 32 3.64 6795. 86 6860.06 8473.62 9036.26 8474.15 8473.65 91.82 6.61 5988933.43 618887.11 N 70. 37841767 W 149.03 12357.71 83. 43 3.83 6798. 79 6862.99 8503.28 9065.98 8503.83 8503.31 93.76 6.36 5988963.12 618888.57 N 70. 37849870 W 149.03 8 12389.62 83. 62 2.88 6802. 39 6866.59 8534.93 9097.69 8535.50 8534.96 95.62 3.02 5988994.79 618889.92 N 70. 37858517 W 149.03339079 12421.57 83. 49 4.32 6805. 97 6870.17 8566.61 9129.44 8567.20 8566.65 97.61 4.50 5989026.50 618891.41 N 70. 37867173 W 149.03337459 12453.66 83. 46 4.12 6809. 62 6873.82 8598.41 9161.32 8599.02 8598.44 99.96 0.63 5989058.33 618893.25 N 70. 37875859 W 149.03335551 Last MWD+IFR+MS 12485.50 83. 70 3.03 6813. 18 6877.38 8629.98 9192.96 8630.62 8630.02 101.93 3.48 5989089.93 618894.72 N 70. 37884486 W 149.03333947 TD (Projected) 12533.00 83. 70 3.03 6818. 39 6882.59 8677.13 9240.17 8677.80 8677.17 104.42 0.00 5989137.11 618896.47 N 70. 37897366 W 149.03331917 Legal Descriation: North ing (Y) [ftUS] Eastin g (X) [ftUSJ Surface : 4256 FS L 4502 FEL S35 T12N R 12E UM 5980460.12 618929.81 BHL : 2373 FS L 4386 FEL S23 T12N R 12E UM 5989137.11 618896.47 • SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-121\S-121\S-121\S-121 Generated 6/15/2006 3:43 PM Page 6 of 6 3 SCHLUMBERGER Survey report Client ...................: BP Exploration (Alaska) Inc. Field ....................: Aurora Well ...................... 5-121PB1 API number ...............: 50-029-23304-60 Engineer .................: I. Hernandez Rig :...................... Nabors 9ES State :.................... Alaska ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS...........: Mason & Taylor ----- Depth reference ---- Permanent datum..........: Depth reference..........: GL above permanent.......: KB above permanent.......: DF above permanent.......: ------------------ Mean Sea Level Driller's Pipe Tally 35.70 ft N/A Top Drive 64.20 ft ----- Vertical section origin---------------- Latitude (+N/S-).........: 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point--------------- Latitude (+N/S-).........: -999.25 ft Departure (+E/W-)......... -999.25 ft Azimuth from Vsect Origin to target: 359.98 degrees N C3 ~' [(c)2006 IDEAL ID10_2C_01] -~ 17-May-2006 16:44:28 Page 1 of 5 Spud date ................. 06-May-06 Last survey date.........: 17-May-06 Total accepted surveys...: 108 MD of first survey.......: 0.00 ft MD of last survey........: 10002.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2005 Magnetic date ............. 08-May-2006 Magnetic field strength..: 57593.05 LAMA Magnetic dec (+E/W-).....: 24.39 degrees Magnetic dip .............. 80.89 degrees ----- MWD survey Reference Criteria --------- Reference G ............... 1002.68 meal Reference H ............... 57593.00 LAMA Reference Dip ............: 80.89 degrees Tolerance of G...........: (+/-) 2.50 meal Tolerance of H............ (+/-)300.00 GAMA Tolerance of Dip.........: (+/-) 0.45 degrees ----- Corrections --------------------------- Magnetic dec (+E/W-).....: 24.39 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 24.39 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=Shell Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction r: • 1 SCHLUMBERGER Survey Report 17-May-2006 16:44:28 Page 2 of 5 --- -------- ------ ------- ------ ------- - -------- -------- -------- -------- ------- ----- - ---- Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool - --- - (ft) -------- (deg) ------ ideg) ------- ift) ------ (ft) ------- (ft) - -------- (ft) -------- (ft) -------- (ft) -------- (deg) ------- 100f) ----- - type ---- -- 1 -------- 0.00 ------ 0.00 ------- 85.00 ------ 0.00 ------- 0.00 - -------- 0.00 -------- 0.00 -------- 0.00 -------- 0.00 ------- 0.00 ----- 0.00 ----- TIP 2 100.00 0.28 150.83 100.00 100.00 -0.21 -0.21 0.12 0.24 150.83 0.28 BP _GYD CT DMS 3 200.00 0.34 118.40 100.00 200.00 -0.57 -0.57 0.50 0.76 138.68 0.18 BP _GYD CT DMS 4 300.00 2.20 78.41 100.00 299.97 -0.32 -0.32 2.64 2.66 96.98 1.95 BP _GYD CT DMS 5 400.00 4.70 77.96 100.00 399.78 0.91 0.92 8.53 8.58 83.86 2.50 BP _GYD CT DMS 6 500.00 7.68 85.84 100.00 499.19 2.25 2.26 19.20 19.33 83.30 3.09 BP _GYD CT DMS 7 600.00 11.42 87.38 100.00 597.79 3.18 3.19 35.76 35.90 84.90 3.75 BP _GYD CT DMS 8 700.00 14.70 89.25 100.00 695.19 3.79 3.81 58.35 58.47 86.26 3.31 BP _GYD CT DMS 9 800.00 15.97 88.56 100.00 791.62 4.30 4.32 84.79 84.90 87.08 1.28 BP _GYD CT DMS 10 900.00 18.70 85.34 100.00 887.07 5.93 5.97 114.52 114.68 87.01 2.89 BP GYD CT DMS 11 938.29 20.54 84.68 38.29 923.14 7.05 7.09 127.33 127.53 86.81 4.84 BP _MWD+IFR+MS 12 1032.81 23.93 82.79 94.52 1010.62 10.98 11.04 162.87 163.24 86.12 3.67 BP _MWD+IFR+MS 13 1126.33 25.98 82.96 93.52 1095.40 15.86 15.93 202.02 202.65 85.49 2.19 BP MWD+IFR+MS ^ 14 1219.27 27.93 77.88 92.94 1178.25 22.91 23.00 243.51 244.60 84.60 3.25 BP MWD+IFR+MS 15 1312.62 28.86 73.42 93.35 1260.38 33.92 34.02 286.48 288.50 83.23 2.48 BP _MWD+IFR+M5 16 1405.89 28.84 70.72 93.27 1342.08 47.75 47.87 329.29 332.75 81.73 1.40 BP _MWD+IFR+MS 17 1499.71 30.90 65.54 93.82 1423.45 65.19 65.32 372.59 378.27 80.06 3.52 BP _MWD+IFR+MS 18 1593.38 30.37 63.22 93.67 1504.04 85.80 85.95 415.63 424.42 78.32 1.38 BP _MWD+IFR+MS 19 1685.79 31.54 59.96 92.41 1583.30 108.42 108.58 457.41 470.12 76.65 2.21 BP _MWD+IFR+MS 20 1783.07 33.77 54.88 97.28 1665.21 136.70 136.88 501.56 519.90 74.74 3.63 BP MWD+IFR+MS _ • 21 1876.64 36.34 49.56 93.57 1741.82 169.64 169.83 543.95 569.85 72.66 4.26 BP MWD+IFR+MS ' 22 1968.23 39.07 42.78 91.59 1814.31 208.44 208.64 584.23 620.37 70.35 5.42 BP MWD+IFR+MS 23 2062.85 38.47 37.71 94.62 1888.10 253.61 253.83 622.50 672.26 67.82 3.41 BP _MWD+IFR+MS 24 2155.73 37.33 35.38 92.88 1961.39 299.42 299.65 656.48 721.63 65.47 1.97 BP_MWD+IFR+MS 25 2248.73 38.83 30.24 93.00 2034.61 347.60 347.84 687.50 770.48 63.16 3.77 BP MWD+IFR+MS 26 2342.41 42.09 23.39 93.68 2105.92 401.82 402.07 714.77 820.10 60.64 5.88 BP MWD+IFR+MS ' 27 2435.28 42.23 16.21 92.87 2174.80 460.39 460.64 735.86 868.14 57.95 5.19 BP MWD+IFR+MS + 28 2527.67 41.68 11.70 92.39 2243.52 520.29 520.55 750.76 913.57 55.26 3.32 BP _ MWD+IFR+MS 29 2621.84 42.44 6.56 94.17 2313.46 582.53 582.80 760.74 958.32 52.54 3.74 BP _MWD+IFR+MS 30 2715.61 42.50 0.10 93.77 2382.66 645.67 645.93 764.41 1000.78 49.80 4.65 BP_MWD+IFR+MS [(c)2 006 IDEAL ID10_2C_ 01] SCHLUMBERGER Survey Report --- -------- ------ ------- ------ ------- 17-May-2006 - -------- 16:44:28 -------- -------- Page -------- 3 of 5 ------- ----- ----- Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) ------- (ft) - -------- (ft) -------- (ft) -------- (ft) -------- (deg) ------- 100f) ----- type ----- --- 31 -------- 2808.88 ------ 43.02 ------- 356.04 ------ 93.27 ------- 2451.15 - -------- 708.93 -------- 709.19 -------- 762.27 -------- 1041.16 ------- 47.07 ----- 3.01 ----- BP_MWD+IFR+MS 32 2901.98 45.44 347.45 93.10 2517.92 773.06 773.32 752.86 1079.27 44.23 6.94 BP_MWD+IFR+MS 33 2995.59 45.31 347.25 93.61 2583.67 838.07 838.33 738.27 1117.06 41.37 0.21 BP_MWD+IFR+MS 34 3088.37 47.36 348.00 92.78 2647.73 903.63 903.88 723.89 1158.02 38.69 2.29 BP_MWD+IFR+MS 35 3180.88 47.12 347.85 92.51 2710.54 970.05 970.30 709.68 1202.13 36.18 0.29 BP MWD+IFR+MS 36 3273.98 46.87 348.42 93.10 2774.04 37 3350.79 47.66 348.19 76.81 2826.16 38 3437.90 47.42 348.87 87.11 2884.97 39 3507.41 47.29 347.48 69.51 2932.06 40 3607.78 47.21 349.04 100.37 3000.19 41 3703.65 47.54 347.76 95.87 3065.12 42 3799.01 47.83 347.82 95.36 3129.31 43 3895.16 47.76 347.80 96.15 3193.91 44 3990.92 47.76 347.78 95.76 3258.28 45 4086.86 48.21 346.99 95.94 3322.50 46 4183.08 48.15 347.11 96.22 3386.65 47 4279.44 48.39 345.94 96.36 3450.79 48 4375.97 48.76 346.42 96.53 3514.66 49 4471.58 48.66 346.89 95.61 3577.75 50 4567.77 48.25 346.54 96.19 3641.55 51 4663.10 48.25 346.90 95.33 3705.03 52 4758.70 48.59 347.21 95.60 3768.47 53 4855.14 46.99 349.12 96.44 3833.27 54 4950.30 47.30 349.01 95.16 3897.99 55 5046.35 47.23 348.82 96.05 3963.17 56 5141.85 47.35 349.60 95.50 4027.95 57 5236.77 47.48 349.23 94.92 4092.18 58 5332.53 46.59 352.32 95.76 4157.45 59 5428.29 46.03 351.64 95.76 4223.60 60 5524.50 46.03 351.46 96.21 4290.39 [(c)2006 IDEAL ID10_2C_ 01] 1036.68 1036.93 1091.93 1092.17 1154.92 1155.15 1204.96 1205.19 1277.13 1277.35 1346.23 1346.45 1415.15 1415.37 1484.77 1484.98 1554.07 1554.28 1623.63 1623.83 1693.52 1693.72 1763.46 1763.65 1833.75 1833.93 1903.65 1903.83 1973.73 1973.90 2042.95 2043.12 2112.65 2112.81 2182.56 2182.71 2251.05 2251.20 2320.29 2320.44 2389.23 2389.37 2457.93 2458.07 2527.08 2527.21 2595.65 2595.78 2664.15 2664.27 695.68 1248.68 684.25 1288.81 671.47 1336.13 660.99 1374.55 645.99 1431.41 631.81 1487.31 616.90 1543.96 601.86 1602.31 586.86 1661.38 571.29 1721.40 555.22 1782.40 538.47 1844.02 521.18 1906.55 504.60 1969.57 488.05 2033.34 471.72 2096.86 455.70 2161.39 441.03 2226.82 427.80 2291.49 414.24 2357.12 401.10 2422.80 388.26 2488.54 377.02 2555.18 367.36 2621.65 357.18 2688.11 33.86 0.52 BP_MWD+IFR+MS 32.07 1.05 BP _MWD+IFR+MS 30.17 0.64 BP _MWD+IFR+MS 28.74 1.48 BP _MWD+IFR+MS 26.83 1.14 BP _MWD+IFR+MS 25.14 1.04 BP _MWD+IFR+MS 23.55 0.31 BP _MWD+IFR+MS 22.06 0.07 BP _MWD+IFR+MS 20.69 0.02 BP _MWD+IFR+MS 19.38 0.77 BP _MWD+IFR+MS 18.15 0.11 BP _MWD+IFR+MS 16.98 0.94 BP _MWD+IFR+MS 15.86 0.53 BP _MWD+IFR+MS 14.84 0.38 BP _MWD+IFR+MS 13.89 0.51 BP MWD+IFR+MS _ 13.00 0.28 BP _MWD+IFR+MS 12.17 0.43 BP _MWD+IFR+MS 11.42 2.21 BP _MWD+IFR+MS 10.76 0.34 BP _MWD+IFR+MS 10.12 0.16 BP _MWD+IFR+MS 9.53 0.61 BP _MWD+IFR+MS 8.98 0.32 BP _MWD+IFR+MS 8.48 2.54 BP _MWD+IFR+MS 8.06 0.78 BP _MWD+IFR+MS 7.64 0.13 BP _MWD+IFR+MS SCHLUMBERGER Survey Report 17-May-2006 16:44:28 Page 4 of 5 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) ------- (ft) - -------- (ft) -------- (ft) -------- (ft) -------- (deg) ------- 100f) ----- type ----- 61 5620.13 46.16 351.60 95.63 4356.71 2732.30 2732.42 347.04 2754.37 7.24 0.17 BP _MWD+IFR+MS 62 5714.52 46.24 350.90 94.39 4422.04 2799.64 2799.75 336.67 2819.92 6.86 0.54 BP _MWD+IFR+MS 63 5810.25 46.09 351.07 95.73 4488.34 2867.84 2867.95 325.85 2886.41 6.48 0.20 BP_MWD+IFR+MS 64 5906.81 46.87 350.07 96.56 4554.84 2936.91 2937.02 314.38 2953.80 6.11 1.10 BP _MWD+IFR+MS 65 6001.83 47.50 350.41 95.02 4619.41 3005.61 3005.72 302.56 3020.91 5.75 0.71 BP MWD+IFR+MS 66 6097.79 47.73 350.70 95.96 4684.10 3075.53 3075.63 290.93 3089.36 5.40 0.33 BP _MWD+IFR+MS 67 6194.07 46.60 349.53 96.28 4749.56 3145.09 3145.19 278.82 3157.52 5.07 1.47 BP_MWD+IFR+MS 68 6289.14 47.20 349.72 95.07 4814.52 3213.38 3213.47 266.32 3224.49 4.74 0.65 BP _MWD+IFR+MS 69 6384.31 46.10 347.20 95.17 4879.85 3281.18 3281.27 252.49 3290.97 4.40 2.25 BP _MWD+IFR+MS 70 6479.45 46.48 346.77 95.14 4945.60 3348.19 3348.27 237.00 3356.65 4.05 0.52 BP _MWD+IFR+MS 71 6575.67 46.79 347.11 96.22 5011.67 3416.33 3416.41 221.19 3423.56 3.70 0.41 BP _MWD+IFR+MS 72 6668.45 47.25 347.29 92.78 5074.92 3482.53 3482.60 206.15 34$8.70 3.39 0.52 BP _MWD+IFR+MS 73 6762.77 47.50 347.53 94.32 5138.79 3550.27 3550.33 191.03 3555.47 3.08 0.32 BP _MWD+IFR+MS 74 6856.46 47.77 348.13 93.69 5201.92 3617.94 3618.00 176.43 3622.30 2.79 0.55 BP _MWD+IFR+MS 75 6950.06 48.44 348.52 93.60 5264.43 3686.18 3686.23 162.34 3689.81 2.52 0.78 BP MWD+IFR+MS 76 7043.79 48.60 347.94 93.73 5326.51 3754.93 3754.98 148.01 3757.89 2.26 0.49 BP _MWD+IFR+MS 77 7137.83 48.74 347.74 94.04 5388.61 3823.96 3824.01 133.14 3826.33 1.99 0.22 BP _MWD+IFR+MS 78 7231.80 47.37 347.89 93.97 5451.42 3892.28 3892.33 118.38 3894.13 1.74 1.46 BP _MWD+IFR+MS 79 7324.46 47.29 348.52 92.66 5514.23 3958.98 3959.02 104.46 3960.40 1.51 0.51 BP _MWD+IFR+MS 80 7417.74 46.33 347.82 93.28 5578.07 4025.55 4025.58 90.52 4026.60 1.29 1.17 BP MWD+IFR+MS 81 7511.22 46.91 348.41 93.48 5642.27 4092.04 4092.07 76.53 4092.78 1.07 0.77 BP_ MWD+IFR+MS 82 7605.01 47.57 348.17 93.79 5705.95 4159.47 4159.49 62.55 4159.96 0.86 0.73 BP _MWD+IFR+MS 83 7697.69 46.72 349.22 92.68 5768.99 4226.10 4226.11 49.23 4226.40 0.67 1.24 BP _MWD+IFR+MS 84 7791.51 45.43 350.87 93.82 5834.07 4292.65 4292.66 37.54 4292.83 0.50 1.87 BP _MWD+IFR+MS 85 7885.10 45.49 350.67 93.59 5899.72 4358.50 4358.51 26.84 4358.59 0.35 0.17 BP MWD+IFR+MS 86 7977.78 45.79 354.19 92.68 5964.53 4424.16 4424.17 18.12 4424.21 0.23 2.73 BP _MWD+IFR+MS 87 8070.26 44.54 358.23 92.48 6029.74 4489.57 4489.58 13.76 4489.60 0.18 3.38 BP_ MWD+IFR+MS 88 8164.00 44.13 357.51 93.74 6096.79 4555.04 4555.04 11.33 4555.06 0.14 0.69 BP_ MWD+IFR+MS 89 8258.14 44.45 357.01 94.14 6164.18 4620.70 4620.70 8.18 4620.71 0.10 0.50 BP _MWD+IFR+MS 90 8350.99 44.90 356.20 92.85 6230.21 4685.87 4685.87 4.31 4685.87 0.05 0.78 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10_2C_ 01] • x SCHLUNIBERGER Survey Rep - --- -------- ------ ort ------- ------ ------- 17-May-2006 - -------- 16:44:28 -------- -------- Page ------- 5 of -------- 5 ----- - ---- Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy # depth angle angle length depth section +N1S- +EIW- displ Azim {degl tool - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) ------- (ft) - -------- (ft) -------- (ft) -------- (ft) ------- (deg) -------- 100f) ----- - type ---- --- 91 -------- 8443.83 ------ 46.63 ------- 356.55 ------ 92.84 ------- 6294.97 - -------- 4752.25 -------- 4752.25 -------- 0.11 ------- 4752.25 -------- 0.00 ----- 1.88 - BP ---- _MWD+IFR+MS 92 8535.92 48.67 358.50 92.09 6357.01 4820.24 4820.24 -2.81 4820.24 359.97 2.71 BP _MWD+IFR+MS 93 8629.92 51.46 359.15 94.00 6417.34 4892.29 4892.29 -4.28 4892.29 359.95 3.02 BP _MWD+IFR+MS 94 8723.81 56.05 0.34 93.89 6472.84 4967.99 4967.99 -4.59 4967.99 359.95 4.99 BP _MWD+IFR+MS 95 8818.16 60.47 0.20 94.35 6522.46 5048.21 5048.21 -4.22 5048.21 359.95 4.69 BP _MWD+IFR+MS 96 8911.41 64.29 359.34 93.25 6565.68 5130.82 5130.82 -4.56 5130.82 359.95 4.18 BP _MWD+IFR+MS 97 9004.49 63.12 359.34 93.08 6606.92 5214.26 5214.26 -5.52 5214.26 359.94 1.26 BP _MWD+IFR+MS 98 9097.94 63.28 0.22 93.45 6649.05 5297.67 5297.67 -5.84 5297.67 359.94 0.86 BP _MWD+IFR+MS 99 9190.23 66.52 1.75 92.29 6688.20 5381.22 5381.22 -4.39 5381.22 359.95 3.82 BP _MWD+IFR+MS 100 9282.96 65.55 1.65 92.73 6725.86 5465.91 5465.91 -1.87 5465.91 359.98 1.05 BP MWD+IFR+MS 101 9376.23 68.26 0.34 93.27 6762.45 5551.69 5551.69 -0.39 5551.69 360.00 3.18 BP _MWD+IFR+MS 102 9468.53 67.66 0.54 92.30 6797.08 5637.24 5637.24 0.26 5637.24 0.00 0.68 BP _MWD+IFR+MS 103 9562.61 67.46 0.70 94.08 6832.99 5724.19 5724.19 1.20 5724.19 0.01 0.26 BP _MWD+IFR+MS 104 9655.60 67.04 0.50 92.99 6868.95 5809.94 5809.94 2.10 5809.94 0.02 0.49 BP _MWD+IFR+MS 105 9749.44 66.95 0.90 93.84 6905.63 5896.31 5896.31 3.16 5896.31 0.03 0.40 BP MWD+IFR+MS 106 9843.43 67.02 359.91 93.99 6942.38 5982.81 5982.81 3.77 5982.81 0.04 0.97 BP_MWD+IFR+MS 107 9930.49 66.77 0.39 87.06 6976.54 6062.89 6062.89 3.98 6062.89 0.04 0.58 BP _MWD+IFR+MS 108 10002.00 66.77 0.39 71.51 7004.75 6128.60 6128.60 4.43 6128.60 0.04 0.00 Projected to TD [(c)2006 IDEAL ID10_2C_01] t SCHLiIMBERGER Survey report Client ...................: BP Exploration (Alaska) Inc. Field ..................... Aurora Well ...................... 5-121 API number ...............: 50-029-23304-00 Engineer .................: G. Samons Rig :...................... Nabors 9ES STATE :.................... Alaska ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS...........: Mason & Taylor ----- Depth reference ---- Permanent datum..........: Depth reference..........: GL above permanent.......: KB above permanent.......: DF above permanent.......: ------------------ Mean Sea Level Driller's Pipe Tally 35.70 ft N/A Top Drive 64.20 ft ----- Vertical section origin---------------- Latitude (+N/S-).........: 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point--------------- Latitude (+N/S-).......... -999.25 ft Departure (+E/W-)........: -999.25 ft Azimuth from Vsect Origin to target: 359.98 degrees a 1 ~, [(c)2006 IDEAL ID10_2C_01] •-- 26-May-2006 Spud date ................. 06-May-06 Last survey date.........: 26-May-06 Total accepted surveys...: 204 MD of first survey.......: 0.00 ft MD of last survey........: 12533.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2005 Magnetic date ............. 23-May-2006 Magnetic field strength..: 57592.68 GAMA Magnetic dec (+E/W-).....: 24.37 degrees Magnetic dip .............: 80.89 degrees ----- MWD survey Reference Reference G ............... Reference H ............... Reference Dip ............. Tolerance of G............ Tolerance of H............ Tolerance of Dip.........: Criteria --------- 1002.68 meal 57592.50 GAMA 80.89 degrees (+/-) 2.50 meal (+/-)300.00 LAMA (+/-) 0.45 degrees ----- Corrections ------------------- Magnetic dec (+E/W-).....: 24.37 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 24.37 degrees (Total az corr = magnetic dec - grid cony) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=Shell Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction • ~J s SCHLUMBERGER Survey Report --- -------- ------ ------- ------ 26 -------- -May-2006 -------- 04:28:19 --------- ------- Page -------- 2 of 8 ------- ----- ----- ------ --- Seq -------- Measured ------ Incl ------- Azimuth ------ Course -------- TVD -------- Vertical --------- Displ ------- Displ -------- Total ------- At ----- DLS ----- Srvy ------ Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) -------- (ft) -------- (ft) --------- (ft) ------- (ft) -------- (deg) ------- 100f) ----- type ----- (deg) ------ --- 1 -------- 0.00 ------ 0.00 ------- 85.00 ------ 0.00 -------- 0.00 -------- 0.00 --------- 0.00 ------- 0.00 -------- 0.00 ------- 0.00 ----- 0.00 ----- TIP ------ None 2 100.00 0.28 150.83 100.00 100.00 -0.21 -0.21 0.12 0.24 150.83 0.28 BP_GYD_ CTD_MS 3 200.00 0.34 118.40 100.00 200.00 -0.57 -0.57 0.50 0.76 138.68 0.18 BP_GYD_ CTD MS 4 300.00 2.20 78.41 100.00 299.97 -0.32 -0.32 2.64 2.66 96.98 1.95 BP_GYD_ CTD_MS 5 400.00 4.70 77.96 100.00 399.78 0.91 0.92 8.53 8.58 83.86 2.50 BP_GYD_ CTD_MS 6 500.00 7.68 85.84 100.00 499.19 2.25 2.26 19.20 19.33 83.30 3.09 BP_GYD_CTD_MS 7 600.00 11.42 87.38 100.00 597.79 3.18 3.19 35.76 35.90 84.90 3.75 BP_ GYD_CTD_MS 8 700.00 14.70 89.25 100.00 695.19 3.79 3.81 58.35 58.47 86.26 3.31 BP_ GYD_CTD_MS 9 800.00 15.97 88.56 100.00 791.62 4.30 4.32 84.79 84.90 87.08 1.28 BP_ GYD_CTD_MS 10 900.00 18.70 85.34 100.00 887.07 5.93 5.97 114.52 114.68 87.01 2.89 BP_ GYD_CTD_MS 11 938.29 20.54 84.68 38.29 923.14 7.05 7.09 127.33 127.53 86.81 4.84 BP_ MWD+IFR+MS 12 1032.81 23.93 82.79 94.52 1010.62 10.98 11.04 162.87 163.24 86.12 3.67 BP_ MWD+IFR+MS 13 1126.33 25.98 82.96 93.52 1095.40 15.86 15.93 202.02 202.65 85.49 2.19 BP MWD+IFR+MS 14 1219.27 27.93 77.88 92.94 1178.25 22.91 23.00 243.51 244.60 84.60 3.25 BP_MWD+IFR+MS 15 1312.62 28.86 73.42 93.35 1260.38 33.92 34.02 286.48 288.50 83.23 2.48 BP_ MWD+IFR+MS 16 1405.89 28.84 70.72 93.27 1342.08 47.75 47.87 329.29 332.75 81.73 1.40 BP_ MWD+IFR+MS 17 1499.71 30.90 65.54 93.82 1423.45 65.19 65.32 372.59 378.27 80.06 3.52 BP_ MWD+IFR+MS 18 1593.38 30.37 63.22 93.67 1504.04 85.80 85.95 415.63 424.42 78.32 1.38 BP_ MWD+IFR+MS 19 1685.79 31.54 59.96 92.41 1583.30 108.42 108.58 457.41 470.12 76.65 2.21 BP_ MWD+IFR+MS 20 1783.07 33.77 54.88 97.28 1665.21 136.70 136.88 501.56 519.90 74.74 3.63 BP MWD+IFR+MS _ 21 1876.64 36.34 49.56 93.57 1741.82 169.64 169.83 543.95 569.85 72.66 4.26 BP_ MWD+IFR+MS 22 1968.23 39.07 42.78 91.59 1814.31 208.44 208.64 584.23 620.37 70.35 5.42 BP_MWD+IFR+MS 23 2062.85 38.47 37.71 94.62 1888.10 253.61 253.83 622.50 672.26 67.82 3.41 BP_ MWD+IFR+MS 24 2155.73 37.33 35.38 92.88 1961.39 299.42 299.65 656.48 721.63 65.47 1.97 BP_ MWD+IFR+MS 25 2248.73 38.83 30.24 93.00 2034.61 347.60 347.84 687.50 770.48 63.16 3.77 BP MWD+IFR+MS 26 2342.41 42.09 23.39 93.68 2105.92 401.82 402.07 714.77 820.10 60.64 5.88 BP_ MWD+IFR+MS 27 2435.28 42.23 16.21 92.87 2174.80 460.39 460.64 735.86 868.14 57.95 5.19 BP_ MWD+IFR+MS 28 2527.67 41.68 11.70 92.39 2243.52 520.29 520.55 750.76 913.57 55.26 3.32 BP_MWD+IFR+MS 29 2621.84 42.44 6.56 94.17 2313.46 582.53 582.80 760.74 958.32 52.54 3.74 BP_ MWD+IFR+MS 30 2715.61 42.50 0.10 93.77 2382.66 645.67 645.93 764.41 1000.78 49.80 4.65 BP_MWD+IFR+MS [(c)2006 IDEAL ID10_2C_ 01] SCHLUMBERGER Survey Report Seq Measured Incl Azimuth # depth angle angle - (ft) (deg) (deg) --- -------- ------ ------- 31 2808.88 43.02 356.04 32 2901.98 45.44 347.45 33 2995.59 45.31 347.25 34 3088.37 47.36 348.00 35 3180.88 47.12 347.85 36 3273.98 46.87 348.42 37 3350.79 47.66 348.19 38 3437.90 47.42 348.87 39 3507.41 47.29 347.48 40 3607.78 47.21 349.04 41 3703.65 47.54 347.76 42 3799.01 47.83 347.82 43 3895.16 47.76 347.80 44 3990.92 47.76 347.78 45 4086.86 48.21 346.99 46 4183.08 48.15 347.11 47 4279.44 48.39 345.94 48 4375.97 48.76 346.42 49 4471.58 48.66 346.89 50 4567.77 48.25 346.54 51 4663.10 48.25 346.90 52 4758.70 48.59 347.21 53 4855.14 46.99 349.12 54 4950.30 47.30 349.01 55 5046.35 47.23 348.82 56 5141.85 47.35 349.60 57 5236.77 47.48 349.23 58 5332.53 46.59 352.32 59 5428.29 46.03 351.64 60 5524.50 46.03 351.46 [(c)2006 IDEAL ID10_2C_01] Course length (ft) 93.27 93.10 93.61 92.78 92.51 93.10 76.81 87.11 69.51 100.37 95.87 95.36 96.15 95.76 95.94 96.22 96.36 96.53 95.61 96.19 95.33 95.60 96.44 95.16 96.05 95.50 94.92 95.76 95.76 96.21 26 TVD depth (ft) 2451.15 2517.92 2583.67 2647.73 2710.54 2774.04 2826.16 2884.97 2932.06 3000.19 3065.12 3129.31 3193.91 3258.28 3322.50 3386.65 3450.79 3514.66 3577.75 3641.55 3705.03 3768.47 3833.27 3897.99 3963.17 4027.95 4092.18 4157.45 4223.60 4290.39 May-2006 04:28:19 Vertical Displ section +N/S- (ft) (ft) 708.93 709.19 773.06 773.32 838.07 838.33 903.63 903.88 970.05 970.30 1036.68 1036.93 1091.93 1092.17 1154.92 1155.15 1204.96 1205.19 1277.13 1277.35 1346.23 1346.45 1415.15 1415.37 1484.77 1484.98 1554.07 1554.28 1623.63 1623.83 1693.52 1693.72 1763.46 1763.65 1833.75 1833.93 1903.65 1903.83 1973.73 1973.90 2042.95 2043.12 2112.65 2112.81 2182.56 2182.71 2251.05 2251.20 2320.29 2320.44 2389.23 2389.37 2457.93 2458.07 2527.08 2527.21 2595.65 2595.78 2664.15 2664.27 Displ +E/W- (ft) 762.27 752.86 738.27 723.89 709.68 695.68 684.25 671.47 660.99 645.99 631.81 616.90 601.86 586.86 571.29 555.22 538.47 521.18 504.60 488.05 471.72 455.70 441.03 427.80 414.24 401.10 388.26 377.02 367.36 357.18 Page Total displ (ft) 1041.16 1079.27 1117.06 1158.02 1202.13 1248.68 1288.81 1336.13 1374.55 1431.41 1487.31 1543.96 1602.31 1661.38 1721.40 1782.40 1844.02 1906.55 1969.57 2033.34 2096.86 2161.39 2226.82 2291.49 2357.12 2422.80 2488.54 2555.18 2621.65 2688.11 3 of 8 At Azim (deg) 47.07 44.23 41.37 38.69 36.18 33.86 32.07 30.17 28.74 26.83 25.14 23.55 22.06 20.69 19.38 18.15 16.98 15.86 14.84 13.89 13.00 12.17 11.42 10.76 10.12 9.53 8.98 8.48 8.06 7.64 DLS (deg/ 100f) 3.01 6.94 0.21 2.29 0.29 0.52 1.05 0.64 1.48 1.14 1.04 0.31 0.07 0.02 0.77 0.11 0.94 0.53 0.38 0.51 0.28 0.43 2.21 0.34 0.16 0.61 0.32 2.54 0.78 0.13 Srvy Tool tool Corr type (deg) BP_MWD+IFR+MS BP_MWD+IFR+MS BP MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS • • S SCHLUMBERGER Survey Report 26-May-2006 04:28:19 Page 4 of 8 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 61 5620.13 46.16 351.60 95.63 4356.71 2732.30 2732.42 347.04 2754.37 7.24 0.17 BP_MWD+IFR+MS 62 5714.52 46.24 350.90 94.39 4422.04 2799.64 2799.75 336.67 2819.92 6.86 0.54 BP _MWD+IFR+MS 63 5810.25 46.09 351.07 95.73 4488.34 2867.84 2867.95 325.85 2886.41 6.48 0.20 BP _MWD+IFR+MS 64 5906.81 46.87 350.07 96.56 4554.84 2936.91 2937.02 314.38 2953.80 6.11 1.10 BP _MWD+IFR+MS 65 6001.83 47.50 350.41 95.02 4619.41 3005.61 3005.72 302.56 3020.91 5.75 0.71 BP _MWD+IFR+MS 66 6097.79 47.73 350.70 95.96 4684.10 3075.53 3075.63 290.93 3089.36 5.40 0.33 BP _MWD+IFR+MS 67 6194.07 46.60 349.53 96.28 4749.56 3145.09 3145.19 278.82 3157.52 5.07 1.47 BP _MWD+IFR+MS 68 6289.14 47.20 349.72 95.07 4814.52 3213.38 3213.47 266.32 3224.49 4.74 0.65 BP _MWD+IFR+MS 69 6384.31 46.10 347.20 95.17 4879.85 3281.18 3281.27 252.49 3290.97 4.40 2.25 BP _MWD+IFR+MS 70 6479.45 46.48 346.77 95.14 4945.60 3348.19 3348.27 237.00 3356.65 4.05 0.52 BP MWD+IFR+MS 71 6575.67 46.79 347.11 96.22 5011.67 3416.33 3416.41 221.19 3423.56 3.70 0.41 BP _MWD+IFR+MS 72 6668.45 47.25 347.29 92.78 5074.92 3482.53 3482.60 206.15 3488.70 3.39 0.52 BP _MWD+IFR+MS 73 6762.77 47.50 347.53 94.32 5138.79 3550.27 3550.33 191.03 3555.47 3.08 0.32 BP _MWD+IFR+MS 74 6856.46 47.77 348.13 93.69 5201.92 3617.94 3618.00 176.43 3622.30 2.79 0.55 BP _MWD+IFR+MS 75 6950.06 48.44 348.52 93.60 5264.43 3686.18 3686.23 162.34 3689.81 2.52 0.78 BP MWD+IFR+MS 76 7043.79 48.60 347.94 93.73 5326.51 3754.93 3754.98 148.01 3757.89 2.26 0.49 BP _MWD+IFR+MS 77 7137.83 48.74 347.74 94.04 5388.61 3823.96 3824.01 133.14 3826.33 1.99 0.22 BP _MWD+IFR+MS 78 7231.80 47.37 347.89 93.97 5451.42 3892.28 3892.33 118.38 3894.13 1.74 1.46 BP _MWD+IFR+MS 79 7324.46 47.29 348.52 92.66 5514.23 3958.98 3959.02 104.46 3960.40 1.51 0.51 BP _MWD+IFR+MS 80 7417.74 46.33 347.82 93.28 5578.07 4025.55 4025.58 90.52 4026.60 1.29 1.17 BP MWD+IFR+MS 81 7511.22 46.91 348.41 93.48 5642.27 4092.04 4092.07 76.53 4092.78 1.07 0.77 BP _MWD+IFR+MS 82 7605.01 47.57 348.17 93.79 5705.95 4159.47 4159.49 62.55 4159.96 0.86 0.73 BP _MWD+IFR+MS 83 7697.69 46.72 349.22 92.68 5768.99 4226.10 4226.11 49.23 4226.40 0.67 1.24 BP _MWD+IFR+MS 84 7791.51 45.43 350.87 93.82 5834.07 4292.65 4292.66 37.54 4292.83 0.50 1.87 BP _MWD+IFR+MS 85 7885.10 45.49 350.67 93.59 5899.72 4358.50 4358.51 26.84 4358.59 0.35 0.17 BP _MWD+IFR+MS 86 7977.78 45.79 354.19 92.68 5964.53 4424.16 4424.17 18.12 4424.21 0.23 2.73 BP _MWD+IFR+MS 87 8070.26 44.54 358.23 92.48 6029.74 4489.57 4489.58 13.76 4489.60 0.18 3.38 BP _MWD+IFR+MS 88 8164.00 44.13 357.51 93.74 6096.79 4555.04 4555.04 11.33 4555.06 0.14 0.69 BP _MWD+IFR+MS 89 8258.14 44.45 357.01 94.14 6164.18 4620.70 4620.70 8.18 4620.71 0.10 0.50 BP _MWD+IFR+MS 90 8350.99 44.90 356.20 92.85 6230.21 4685.87 4685.87 4.31 4685.87 0.05 0.78 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10_2C_ 01] • • SCHLUNIBERGER Survey Report --- -------- ------ ------- ------ ------- 26-May-2006 - -------- 04:28:19 --------- ------- Page -------- 5 of ------- 8 ----- ----- ------ --- Seq -------- Measured ------ Incl ------- Azimuth ------ Course ------- TVD - -------- Vertical --------- Displ ------- Displ -------- Total ------- At ----- DLS ----- ------ Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 91 8443.83 46.63 356.55 92.84 6294.97 4752.25 4752.25 0.11 4752.25 0.00 1.88 BP_MWD+IFR+MS 92 8535.92 48.67 358.50 92.09 6357.01 4820.24 4820.24 -2.81 4820.24 359.97 2.71 BP_MWD+IFR+MS 93 8629.92 51.46 359.15 94.00 6417.34 4892.29 4892.29 -4.28 4892.29 359.95 3.02 BP_MWD+IFR+MS 94 8723.81 56.05 0.34 93.89 6472.84 4967.99 4967.99 -4.59 4967.99 359.95 4.99 BP_MWD+IFR+MS 95 8818.16 60.47 0.20 94.35 6522.46 5048.21 5048.21 -4.22 5048.21 359.95 4.69 BP MWD+IFR+MS 96 8911.41 64.29 359.34 93.25 6565.68 5130.82 5130.82 -4.56 5130.82 359.95 4.18 BP_MWD+IFR+MS • 97 9004.49 63.12 359.34 93.08 6606.92 5214.26 5214.26 -5.52 5214.26 359.94 1.26 BP _MWD+IFR+MS 98 9097.94 63.28 0.22 93.45 6649.05 5297.67 5297.67 -5.84 5297.67 359.94 0.86 BP _MWD+IFR+MS 99 9190.23 66.52 1.75 92.29 6688.20 5381.22 5381.22 -4.39 5381.22 359.95 3.82 BP _MWD+IFR+MS 100 9282.96 65.55 1.65 92.73 6725.86 5465.91 5465.91 -1.87 5465.91 359.98 1.05 BP MWD+IFR+MS 101 9346.00 67.38 0.76 63.04 6751.03 5523.69 5523.69 -0.66 5523.69 359.99 3.18 BP _BLIND 102 9358.00 68.65 0.03 12.00 6755.53 5534.82 5534.82 -0.58 5534.82 359.99 11.99 BP _BLIND 103 9379.04 68.39 0.31 21.04 6763.23 5554.40 5554.40 -0.53 5554.40 359.99 1.75 BP _INC+TREND 104 9401.74 70.10 0.62 22.70 6771.28 5575.63 5575.63 -0.35 5575.63 360.00 7.64 BP _INC+TREND 105 9433.22 73.59 1.04 31.48 6781.08 5605.53 5605.53 0.08 5605.53 0.00 11.16 BP INC+TREND 106 9464.50 76.96 1.46 31.28 6789.03 5635.77 5635.77 0.74 5635.77 0.01 10.85 BP _INC+TREND 107 9495.42 78.66 1.87 30.92 6795.56 5665.98 5665.98 1.62 5665.98 0.02 5.65 BP _MWD+IFR+MS 108 9526.78 79.29 1.78 31.36 6801.56 5696.74 5696.75 2.60 5696.75 0.03 2.03 BP _MWD+IFR+MS 109 9557.32 79.13 2.12 30.54 6807.28 5726.73 5726.73 3.62 5726.73 0.04 1.21 BP _MWD+IFR+MS 110 9588.30 79.58 1.26 30.98 6813.00 5757.16 5757.16 4.52 5757.16 0.04 3.09 BP MWD+IFR+MS _ 111 9618.71 79.99 1.88 30.41 6818.39 5787.07 5787.08 5.34 5787.08 0.05 2.42 BP _MWD+IFR+MS 112 9650.30 80.22 2.27 31.59 6823.82 5818.17 5818.18 6.46 5818.18 0.06 1.42 BP _MWD+IFR+MS 113 9680.69 79.94 2.70 30.39 6829.06 5848.08 5848.08 7.76 5848.09 0.08 1.67 BP MWD+IFR+MS ~ 114 9711.91 81.86 2.49 31.22 6833.99 5878.88 5878.88 9.16 5878.89 0.09 6.19 BP MWD+IFR+MS 115 9743.55 85.37 1.71 31.64 6837.51 5910.29 5910.30 10.31 5910.30 0.10 11.36 BP MWD+IFR+MS 116 9774.56 88.82 1.09 31.01 6839.08 5941.25 5941.25 11.07 5941.26 0.11 11.30 BP _MWD+IFR+MS 117 9806.03 92.45 1.02 31.47 6838.73 5972.71 5972.71 11.65 5972.72 0.11 11.54 BP MWD+IFR+MS ^ 118 9837.08 94.70 1.17 31.05 6836.80 6003.69 6003.69 12.24 6003.70 0.12 7.26 BP MWD+IFR+MS 119 9867.51 97.48 0.21 30.43 6833.57 6033.94 6033.94 12.60 6033.96 0.12 9.66 BP MWD+IFR+MS ~ 120 9898.50 98.72 359.62 30.99 6829.20 6064.62 6064.62 12.56 6064.64 0.12 4.42 BP MWD+IFR+MS [(c)2006 IDEAL ID10_2C_ 01] a SCHLUNIBERGER Survey Report --- -------- ------ ------- ------ ------- 26-May-2006 - -------- 04:28:19 -------- -------- Page -------- 6 of ------- 8 ----- - ---- ------ Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 121 9928.76 98.90 358.72 30.26 6824.57 6094.52 6094.52 12.12 6094.54 0.11 3.00 BP _MWD+IFR+MS 122 9964.23 98.72 357.30 35.47 6819.13 6129.55 6129.55 10.91 6129.56 0.10 3.99 BP _MWD+IFR+MS 123 9995.74 98.68 357.68 31.51 6814.37 6160.67 6160.67 9.54 6160.68 0.09 1.20 BP _MWD+IFR+MS 124 10025.60 98.78 357.80 29.86 6809.84 6190.16 6190.16 8.38 6190.17 0.08 0.52 BP _MWD+IFR+MS 125 10056.07 98.86 358.09 30.47 6805.16 6220.25 6220.25 7.30 6220.26 0.07 0.98 BP _MWD+IFR+MS 126 10087.11 98.89 357.33 31.04 6800.38 6250.89 6250.90 6.07 6250.90 0.06 2.42 BP _MWD+IFR+MS 127 10116.52 99.07 355.56 29.41 6795.78 6279.89 6279.89 4.27 6279.89 0.04 5.98 BP _MWD+IFR+MS 128 10148.09 97.94 354.67 31.57 6791.12 6311.00 6311.00 1.61 6311.00 0.01 4.54 BP _MWD+IFR+MS 129 10179.30 96.89 355.44 31.21 6787.09 6341.83 6341.83 -1.05 6341.83 359.99 4.16 BP_MWD+IFR+MS 130 10209.49 94.86 355.66 30.19 6784.00 6371.77 6371.77 -3.38 6371.77 359.97 6.76 BP MWD+IFR+MS 131 10240.91 92.48 355.88 31.42 6781.99 6403.04 6403.04 -5.70 6403.04 359.95 7.61 BP _MWD+IFR+MS 132 10271.73 90.10 355.52 30.82 6781.29 6433.76 6433.76 -8.01 6433.77 359.93 7.81 BP _MWD+IFR+MS 133 10301.98 87.89 355.06 30.25 6781.82 6463.90 6463.90 -10.49 6463.91 359.91 7.46 BP _MWD+IFR+MS 134 10333.84 85.80 355.69 31.86 6783.58 6495.61 6495.61 -13.05 6495.62 359.88 6.85 BP _MWD+IFR+MS 135 10363.78 84.22 356.59 29.94 6786.18 6525.37 6525.36 -15.06 6525.38 359.87 6.07 BP MWD+IFR+MS 136 10395.26 82.26 356.75 31.48 6789.89 6556.58 6556.57 -16.88 6556.59 359.85 6.25 BP _MWD+IFR+MS 137 10427.17 80.22 356.58 31.91 6794.75 6588.06 6588.05 -18.71 6588.08 359.84 6.41 BP _MWD+IFR+MS 138 10457.69 77.87 355.37 30.52 6800.54 6617.95 6617.94 -20.82 6617.97 359.82 8.63 BP _MWD+IFR+MS 139 10488.24 77.08 355.92 30.55 6807.17 6647.69 6647.68 -23.08 6647.72 359.80 3.13 BP _MWD+IFR+MS 140 10520.28 77.82 356.08 32.04 6814.13 6678.88 6678.88 -25.26 6678.92 359.78 2.36 BP MWD+IFR+MS 141 10549.80 78.31 355.49 29.52 6820.24 6707.69 6707.68 -27.38 6707.74 359.77 2.56 BP _MWD+IFR+MS 142 10581.95 78.61 355.39 32.15 6826.67 6739.09 6739.08 -29.89 6739.15 359.75 0.98 BP _MWD+IFR+MS 143 10614.35 79.46 355.47 32.40 6832.83 6770.80 6770.79 -32.42 6770.86 359.73 2.63 BP _MWD+IFR+MS 144 10644.48 82.80 355.28 30.13 6837.48 6800.47 6800.46 -34.82 6800.55 359.71 11.10 BP _MWD+IFR+MS 145 10675.64 85.69 356.75 31.16 6840.60 6831.39 6831.38 -36.98 6831.48 359.69 10.39 BP MWD+IFR+MS 146 10707.82 87.98 357.49 32.18 6842.38 6863.48 6863.47 -38.59 6863.58 359.68 7.48 BP _MWD+IFR+MS 147 10738.38 90.22 358.33 30.56 6842.86 6894.02 6894.00 -39.70 6894.12 359.67 7.83 BP _MWD+IFR+MS 148 10769.35 92.59 359.15 30.97 6842.10 6924.97 6924.95 -40.39 6925.07 359.67 8.10 BP _MWD+IFR+MS 149 10801.09 94.21 1.89 31.74 6840.22 6956.65 6956.63 -40.10 6956.75 359.67 10.02 BP _MWD+IFR+MS 150 10831.54 94.05 3.28 30.45 6838.02 6986.98 6986.97 -38.73 6987.08 359.68 4.58 BP_MWD+IFR+MS [(c)2 006 IDEAL ID10_2C_ 01] • • 1 SCHLiJNIBERGER Survey Report 26 -May-2006 04:28:19 Page 7 of 8 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) -------- (ft) -------- (ft) -------- (ft) -------- (ft) -------- (deg) ------- 100f) ----- - type (deg) ---- ------ --- 151 -------- 10863.36 ------ 94.12 ------- 4.02 ------ 31.82 -------- 6835.76 -------- 7018.66 -------- 7018.65 -------- -36.71 -------- 7018.74 ------- 359.70 ----- 2.33 - BP ---- ------ _MWD+IFR+MS 152 10895.58 94.33 3.15 32.22 6833.38 7050.73 7050.71 -34.70 7050.80 359.72 2.77 BP _MWD+IFR+MS 153 10925.75 94.69 3.48 30.17 6831.01 7080.75 7080.74 -32.96 7080.82 359.73 1.62 BP _MWD+IFR+MS 154 10957.56 94.92 3.02 31.81 6828.34 7112.40 7112.39 -31.16 7112.46 359.75 1.61 BP_MWD+IFR+MS 155 10988.87 94.91 3.76 31.31 6825.66 7143.54 7143.53 -29.32 7143.59 359.76 2.35 BP MWD+IFR+MS 156 11019.02 95.27 3.29 30.15 6822.99 7173.51 7173.50 -27.47 7173.55 359.78 1.96 BP _MWD+IFR+MS 157 11051.10 95.47 3.54 32.08 6819.98 7205.39 7205.38 -25.57 7205.43 359.80 1.00 BP _MWD+IFR+MS 158 11081.83 95.75 3.77 30.73 6816.98 7235.91 7235.90 -23.62 7235.94 359.81 1.18 BP _MWD+IFR+MS 159 11112.15 95.44 2.81 30.32 6814.02 7266.04 7266.03 -21.89 7266.06 359.83 3.31 BP _MWD+IFR+MS 160 11144.82 93.46 2.53 32.67 6811.49 7298.57 7298.57 -20.37 7298.59 359.84 6.12 BP MWD+IFR+MS 161 11175.93 91.58 2.57 31.11 6810.12 7329.62 7329.61 -18.99 7329.64 359.85 6.04 BP _MWD+IFR+MS 162 11206.40 91.22 1.90 30.47 6809.38 7360.06 7360.05 -17.80 7360.07 359.86 2.50 BP _MWD+IFR+MS 163 11237.35 91.63 2.57 30.95 6808.61 7390.97 7390.97 -16.59 7390.99 359.87 2.54 BP _MWD+IFR+MS 164 11268.63 91.66 2.26 31.28 6807.71 7422.21 7422.21 -15.28 7422.22 359.88 1.00 BP _MWD+IFR+MS 165 11299.70 90.32 3.00 31.07 6807.17 7453.24 7453.24 -13.85 7453.25 359.89 4.93 BP MWD+IFR+MS 166 11330.68 88.07 4.31 30.98 6807.61 7484.15 7484.15 -11.88 7484.16 359.91 8.40 BP _MWD+IFR+MS 167 11362.06 86.90 4.73 31.38 6808.99 7515.40 7515.40 -9.41 7515.41 359.93 3.96 BP _MWD+IFR+MS 168 11392.31 86.82 4.70 30.25 6810.64 7545.51 7545.50 -6.92 7545.51 359.95 0.28 BP _MWD+IFR+MS 169 11423.20 87.22 4.06 30.89 6812.25 7576.26 7576.26 -4.57 7576.26 359.97 2.44 BP _MWD+IFR+MS 170 11455.56 88.51 5.63 32.36 6813.45 7608.48 7608.48 -1.84 7608.48 359.99 6.28 BP MWD+IFR+MS 171 11485.77 87.12 7.05 30.21 6814.61 7638.48 7638.48 1.50 7638.48 0.01 6.58 BP _MWD+IFR+MS 172 11516.00 88.09 7.69 30.23 6815.87 7668.44 7668.44 5.37 7668.44 0.04 3.84 BP _MWD+IFR+MS 173 11547.84 86.90 8.19 31.84 6817.26 7699.94 7699.94 9.77 7699.95 0.07 4.05 BP _MWD+IFR+MS 174 11578.43 87.31 8.70 30.59 6818.81 7730.16 7730.16 14.25 7730.17 0.11 2.14 BP_MWD+IFR+MS 175 11611.86 87.37 9.45 33.43 6820.36 7763.13 7763.14 19.52 7763.16 0.14 2.25 BP MWD+IFR+MS 176 11642.58 87.48 9.56 30.72 6821.74 7793.40 7793.40 24.59 7793.44 0.18 0.51 BP _MWD+IFR+MS 177 11672.55 87.54 9.52 29.97 6823.04 7822.92 7822.93 29.55 7822.99 0.22 0.24 BP_MWD+IFR+MS 178 11704.37 86.21 8.75 31.82 6824.77 7854.29 7854.30 34.59 7854.38 0.25 4.83 BP _MWD+IFR+MS 179 11734.79 85.31 8.96 30.42 6827.02 7884.26 7884.28 39.26 7884.37 0.29 3.04 BP _MWD+IFR+MS 180 11765.98 85.11 7.34 31.19 6829.63 7915.03 7915.04 43.67 7915.16 0.32 5.22 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10_2C_ 01] • • SCHLUMBERGER Survey Report --- -------- ------ ------- ------ 26 -------- -May-2006 -------- 04:28:19 -------- -------- Page -------- 8 of ------- 8 ----- - ---- ------ Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (f t) -------- (ft) -------- (ft) -------- (ft) -------- (ft) -------- (deg) ------- 100f) ----- - type (deg) ---- ------ 181 11797.18 85.46 6.94 31.20 6832.19 7945.88 7945.90 47.53 7946.04 0.34 1.70 BP _MWD+IFR+MS 182 11828.50 85.99 6.76 31.32 6834.53 7976.89 7976.91 51.26 7977.07 0.37 1.79 BP _MWD+IFR+MS 183 11859.37 86.40 6.72 30.87 6836.58 8007.48 8007.49 54.87 8007.68 0.39 1.33 BP _MWD+IFR+MS 184 11890.89 86.81 6.74 31.52 6838.44 8038.72 8038.74 58.56 8038.96 0.42 1.30 BP _MWD+IFR+MS 185 11922.35 87.17 6.33 31.46 6840.09 8069.93 8069.95 62.14 8070.19 0.44 1.73 BP _MWD+IFR+MS 186 11952.98 87.29 6.39 30.63 6841.57 8100.34 8100.36 65.53 8100.63 0.46 0.44 BP _MWD+IFR+MS 187 11984.05 87.64 5.94 31.07 6842.95 8131.20 8131.22 68.86 8131.51 0.49 1.83 BP _MWD+IFR+MS 188 12015.68 87.98 5.80 31.63 6844.16 8162.64 8162.66 72.09 8162.98 0.51 1.16 BP _MWD+IFR+MS 189 12046.79 88.20 5.84 31.11 6845.19 8193.57 8193.59 75.25 8193.94 0.53 0.72 BP _MWD+IFR+MS 190 12078.15 88.51 6.09 31.36 6846.09 8224.74 8224.77 78.50 8225.15 0.55 1.27 BP MWD+IFR+MS 191 12109.21 86.79 4.34 31.06 6847.37 8255.65 8255.67 81.32 8256.08 0.56 7.90 BP _MWD+IFR+MS 192 12140.81 85.47 2.02 31.60 6849.50 8287.12 8287.15 83.07 8287.57 0.57 8.43 BP _MWD+IFR+MS 193 12172.16 86.03 2.08 31.35 6851.82 8318.37 8318.40 84.19 8318.82 0.58 1.80 BP _MWD+IFR+MS 194 12203.85 86.46 2.62 31.69 6853.90 8349.96 8349.99 85.49 8350.43 0.59 2.18 BP _MWD+IFR+MS 195 12234.76 87.41 1.92 30.91 6855.55 8380.80 8380.83 86.71 8381.28 0.59 3.82 BP _MWD+IFR+MS 196 12266.03 87.96 2.93 31.27 6856.81 8412.02 8412.05 88.03 8412.51 0.60 3.68 BP _MWD+IFR+MS 197 12297.69 87.31 3.77 31.66 6858.12 8443.59 8443.63 89.88 8444.11 0.61 3.35 BP _MWD+IFR+MS 198 12327.84 85.32 3.64 30.15 6860.06 8473.62 8473.65 91.83 8474.15 0.62 6.61 BP _MWD+IFR+MS 199 12357.71 83.43 3.83 29.87 6862.99 8503.28 8503.31 93.76 8503.83 0.63 6.36 BP _MWD+IFR+MS 200 12389.62 83.62 2.88 31.91 6866.59 8534.93 8534.96 95.62 8535.50 0.64 3.02 BP _MWD+IFR+MS 201 12421.57 83.49 4.32 31.95 6870.17 8566.61 8566.65 97.61 8567.20 0.65 4.50 BP _MWD+IFR+MS 202 12453.66 83.46 4.12 32.09 6873.82 8598.41 8598.44 99.96 8599.03 0.67 0.63 BP _MWD+IFR+MS 203 12485.50 83.70 3.03 31.84 6877.38 8629.99 8630.02 101.93 8630.62 0.68 3.48 BP _MWD+IFR+MS 204 12533.00 83.70 3.03 47.50 6882.59 8677.13 8677.17 104.42 8677.80 0.69 0.00 Pr ojected TD [(c)2 006 IDEAL ID10_2C_ 01] • • TREE = 4-1/18" t1VELLHEAD = ACTUATOR = FMC N/A KB. ELEV = 64.3' BF. ELEV = 35.8' KOP = _ . _- 300' Max Angle = 99 @ 10Q8T -Datum MD = Datum TVD = • S-121 FROM DRLG -DRAFT 9-5/8" CSG, 40#, L-80, ID = 8.835" H 3404' Minimum ID = 2.813" @ 9044, , 9067, 9135, 9158 4-1/2" TBG, 12.6#, L-80, .0152 bpf, ID = 3.958" 4755' 3-1/2" TBG, 9.2#, L-80, .0087 bpf, ID = 2.992" 7377' PERFORATION SUMMARY REF LOG: LWD 5/26/06 ANGLE AT TOP PERF: 68 Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL ppn/Sqz DATE 2.5" 6 9360 - 9520 O 05!28/06 2.5" 6 9570 - 9630 O 05/28/06 2.5" 6 9710 - 9840 O 05!28106 2.5" 6 9890 - 9940 O 05/28/06 2.5" 6 9990 - 10180 O 05!28/06 2.5" 6 10200 - 10380 O 05!28/06 2.5" 6 10410 -10500 O 05/28/06 2.5" 6 10530 - 10580 O 05!28!06 2.5" 6 10950 - 11070 O 05/28/06 2.5" 6 11140 - 11250 O 05128/06 2.5" 6 11450 - 11490 O 05!28/06 2.5" 6 11520 - 11560 O 05/28/06 2.5" 6 11600 - 11650 O 05/28/06 2.5" 6 11750 - 12000 O 05/28/06 ~ ~ 3-112" TBG, 9.2#, 13-CR80, .0087 bpf, ID = 2.99''-~ 9186' TOP OF 7" BAKER WHIPSTOCK ~-~ 9346' 7" HES EZSV 9384' ~ 7" CSG, 26#, L-80, .0383 bpf, ID = 6.276" ~ S NOTES: **`CHROME TBG`** 2179' {-41/2" HES XNIP, ID = 3.813" 4755' -~4-1/2"x3-112" XO, ID = 2.992" t;AS I IFT MANnRFI S ST MD ND DEV TYPE VLV LATCH PORT DATE 4 4799 3795 47 KBG-2 DMY INT 0 05130!06 3 6537 4986 46 KBG-2 DMY INT 0 05/30/06 2 7450 5600 46 KBG-2 DMY INT 0 05/30(06 1 8955 6585 64 KBG-2 DCK3 INT 0 05/30/06 7877' '~ 3-1/2" 13-CR80 X 3-112" L-80 XO, ID = 2.992" 9044- -~3-1lZ" XD Duro Sliding Sleeve, ID = 2.813 9068' 9088' 3-112" HES X NIP, ID = 2.813" 3-1/2" Symphony Gauge Carrier 9110' 7" X4-1 /2" BAKER S-3 PKR, ID = 3.875" 9135' 9158' 3-1/2" HES X NIP, ID = 2.813" 3-112" HES X NIP, ID = 2.813" 9175' S" X 7" BAKER ZXP PACKER(HMC LNR 9186' 4-112" W LEG. ID = 4.000" PBTD 12443' - 4-112" SOLID LNR, 12.6 #, L-80, ID = 3.958" 12528' 12012' !-iPUP JT W/ RA TAG DATE REV BY COMMENTS DATE REV BY COMMENTS BOREALIS UNIT 05/31!06 9es Drilling completion WELL: S-121 PERMIT No: rL06041 API No: 50-029-23304-00 SEC 35, T12N, R11E, 425T NSL & 4501' WEL BP F,cptoration {Alaska] 7"WINDOW 9346' - 9358 9493' PUP JT W/ RA TAG a e ~ ~ ~ $ j _~ g ~ ~ ~ $ ~ ~' y: ~ ~ ~~ FRANK H. MURKOWSKI, GOVERNOR ,f ,~~~~+ *~ AI~ASSA OIL ~ ~ 333 W. 7TM AVENUE, SUITE 100 CO1~T5ER'QATI011I COM11i15SIO1~T ~`a ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 ' FAX (907) 276-7542 Robert Tirpack Senior Drilling Engineer BP Exploration (Alaska), Inc. PO Box 196612 Anchorage, AK 99519 Re: Prudhoe Bay Field, Aurora Pool, PBU 5-121 BP Exploration (Alaska), Inc. Permit No: 206-041 Surface Location: 4257' FSL, 4501' FEL, SEC. 35, T12N, R12E, UM Bottomhole Location: 2037' FSL, 4418, FEL, SEC. 23, T12N, R12E, UM Dear Mr. Tirpack, Enclosed is the approved application for permit to drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. When providing notice for a representative of the Commission to witnes an required test, contact the Commission's petroleum field inspector at (9 ) 65 -3607 (pager). DATED thi~ day of April, 2006 cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. 4 ~i~ STATE OF ALASKA ALA,~OIL AND GAS CONSERVATION COMMON PERMIT TO DRILL 20 AAC 25.005 ~~-CIE[ 1 a. Type of work ® Drill ^ Redrill ^ Re-Entry 1 b. Current Well Class ^ Exploratory ^ Development Gas ^ Service / ^ Multiple Zone ^ Stratigraphic Test ®Development Oil ^ Single Zone 1 c. Specify if well is propos O~fi~B ^Coalbed Methane ^ Gas Hydrates ^ Shale Gas 2. Operator Name: BP Exploration (Alaska) Inc. 5. Bond: ®Blanket ^ Single Well Bond No. 6194193 11. Well Name and Number: PBU S-121 ~ 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: MD 12176 TVD 6890 12. Field /Pool(s): Prudhoe Bay Field /Aurora Pool 4a. Location of Well (Governmental Section): Surface: 4257' FSL 4501' FEL SEC 35 T12N R12E UM 7. Property Designation: ADL 047448 , , . , , , Top of Productive Horizon: 4908' FSL, 4510' FEL, SEC. 26, T12N, R12E, UM 8. Land Use Permit: 13. Approximate Spud Date: May 1, 2006 r' Total Depth: 2037' FSL, 4418' FEL, SEC. 23, T12N, R12E, UM 9. Acres in Property: 2560 14. Distance to Nearest Property: 3,200' 4b. Location of Well (State Base Plane Coordinates): Surtace: x-618930 -5980460 Zone-ASP4 10. KB Elevation plan (Height above GL): 64,3. feet i5. Distance to Nearest well Within Pool: 1,620' 16. Deviated Wells: Kickoff Depth: 300 feet Maximum Hole Angle: 93.8 de rees 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.05) Downhole: 3532 Surtace: 2839 18. Casin Pr ram: S cations To - Settln D® th -B ottom Quanta of Ceman c.f. or sacks Hole Casin Wei ht Grade Cou lin Len th MD TVD MD TVD includin sta a data 42" 20" 215.5# A-43 Weld 110' Surface Surface -110' -110' 60 sx Arctic Set A rox. 12-1/4" 9-5/8" 40# L-80 BTC 3377' Surtace Surface 3377' 2850' 54 sx AS 1411 sx Class 'G' 8-3/4" 7" 26# L-80 TC-II / BTC•M 10000' Surtace Surtace 10000' 7037 93 sx Class 'G', 438 sx Class 'G' ~ 6-1/8" 4-1/2" 12.6# L-80 IBT-M 2946' 9230' 6711' 12176' 6890' 70 sx Class 'G' ~ 19. PRESE NT WELL CONDITION SUMMARY (To be completed f or RedriltandAe-entry Operations) Total Depth MD (ft): Total Depth TVD (ft): Plugs (measured): Effective Depth MD (ft): Effective Depth TVD (ft): Junk (measured): Casin >Len th .Size Cement Volume MD TVD Conductor /Structural Surface Intermediate i Liner Perforation Depth MD (ft): Perforation Depth TVD (ft): 20. Attachments ®Filing Fee, $100 ^ BOP Sketch ®Drilling Program ^ Time vs Depth Plot ^ Shallow Hazard Analysis ® Property Plat ^ Diverter Sketch ^ Seabed Report ®Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Brandon Peltier, 564-5912 Printed Name Robert Tirpack Title Senior Drilling Engineer Prepared By Nama/Number. Si nature .1~ - Phone 564-4166 Date 3/a ~ Terrie Hubble, 564-4628 Gommiasion Use Onl Permit To Drill Number:,zG~ O API Number. ~1 50- o' L - Z 330 / Permit Approval Date: See cover letter for other requirements Conditions of Approval: If box is checked, well may not be used to explore for, test, or produce Coalbed methane, gas hydrates, or gas contained shales: ~( Samples Req'd: ^ Yes~No Mud Log Req'd: ~ Yes !"'~'o _ HZS Measures: Yes ^ o Directional Survey Req'd: Yes (~,No Other: I ~S~ ~~P~ f~ 3Soo ~ St~ . ~~ 20 /}-~4-c. zs. 0 3 s (~. ~ C ~ 1, a.l t ~--~~t,~,~~ Ro ~w ~ s c~.~,~ w ~~ ~ . APPROVED BY THE COMMISSION Date ~~~ ~~ ,COMMISSIONER Form 10-401 Revised 12/2005 ~ ~ I {~ ~ n ! Submit In Duplicate Well Plan Summary T e of Well roducer or in'ector : Producer Surface Location: 1,023.3 FNL & 4,501.4 FEL, Sec. 35, T12N, R12E X = 618,930 Y = 5,980,460 S-121 Pilot Hole BHL 4,495.9 FEL & 168.0 FNL, Sec 26, T12N, R12E 7" Casin Point X = 618,830 Y = 5,986,594 Z = 6,972 TVD ss S-121 Target Start: 4,509.5 FEL & 371.8 FNL, Sec. 26, T12N, R12E X = 618,820 Y = 5,986,390 Z = 6,775 TVDss S-121 Target End: 4,418.0 FEL & 3,242.5 FNL, Sec. 23, T12N, R12E X = 618,870 Y = 5,988,800 Z = 6,825 TVDss AFE Number: xxxxxxxxx Ri Nabors E GL: 35.8 RT: 28.5' Estimated Start Date: May 01, 2006 O eratin da s to com lete: 23.9 TD: 12,176' TVD: 6,890' Max Inc: 93.8 RTE: 64.3' Well Desi n: Grassroots, Ultra Slim Hole, Aurora Kuparuk Horizontal Producer Well Information Distance to Nearest Property: Distance to Nearest Well in Pool API Number: Well Type: Current Status: Conductor: Estimated BHP: Estimated BHT: Reference Documents Directional Plans: Statement of Requirements ~ ~ Well Name: S-121 3200 ft South of PBU boundary at TD 1620 ft East of S-111 50-029-XXXXX New Well -Aurora Field, Kuparuk Producer No Conductor Set No Conductor Set 3532 psi C~ 6930' TVDss (9.8 ppg EMW) 147 degF ~ 6710' TVDss S-121 PB1 (P2), S-121 (P6) S-121 SOR locked 1/8/2006 L-1231 Permit to Drill Page 1 Formation Markers and Estimated Pore Pressures • Est. Est. Formation Formation Tops To s Uncertainty Commercial Hydrocarbon Bearin Est. Pore Press. Est. Pore Press. Formation (M~) (TVDss) (eet) (Yes/No) (Psi) ( EMW) G1 335 +/- 30' no 149 8.6 SV6 1540 +/- 30' no 685 8.6 Base Permafrost 2110 1870 +/- 30' no 832 8.6 SV5 2458 2130 +/- 30' no 948 8.6 SV4 2702 2325 +/- 30' no 1035 8.6 SV3 3229 2705 +/- 30' no 1204 8.6 SV2 3458 2865 +/- 30' no 1275 8.6 SV1 3960 3205 +/- 30' no 1426 8.6 UG4 4469 3550 +/- 30' no 1598 8.7 UG4A 4550 3590 +/- 30' no 1616 8.7 UG3 5008 3905 +/- 30' no 1757 8.7 UG1 5834 4465 +/- 30' no 2076 8.9 Ma 6247 4750 +/- 30' es 2209 8.9 Mb1 4800 +/- 30' no 2232 8.9 Mb2 4845 +/- 30' no 2253 8.9 Mc 4905 +/- 30' no 2281 8.9 Na 6572 4970 +/- 30' es 2237 8.7 Nb 4985 +/- 30' es 2243 8.7 Nc 5010 +/- 30' no 2255 8.7 OA 6742 5080 +/- 30' es 2261 8.6 OBa 5120 +/- 30' es 2278 8.6 OBd 6986 5250 +/- 30' es -residual 2336 8.6 OBf_Base 7163 5380 +/- 30' no 2394 8.6 CM2 7694 5710 +/- 100' no CM1 Colville Shales 8754 6420 +/- 50' no Fault 1 8780 6435 +/- 100' M.D. -see fault section for details. THRZ 9143 6610 +/- 30' no TKLB 9368 6705 +/- 30' no TKC4 9380 6710 +/- 30' es 3200 9.20 TKC1 B 9663 6830 +/- 50' no LCU Ku aruk B 9900 6930 +/- 50' no 3532 9.8 TD 10000 6980 +/- 50' no Casinq/Tubinq Program Hole Size Csg / Tb O.D. WUFt Grade Conn Burst si Collapse si Length Top MD /TVD Bottom MD /TVD 42" 20" 215.5# A-53 Weld TBD GL TBD 12-~/a" 9 5/e" 40# L-80 BTC 5,750 3,090 3377 GL 3377/2850 8-3/a" 7" 26# L-80 TC-II 7,240 5,410 4876 GL 4876 8-3/a" 7" 26# L-80 BTC-M 7,240 5,410 5124 4876 10000/7037 6-%a" 4-~/z" 12.60# L-80 IBT-M 8,430 7,500 2945 9230/6711 12176/6890 Tubin 4-~/z" 12.60# L-80 IBT-M 8,430 7,500 4783 GL 4783/3800 Tubin 3-'/z" 9.2# L-80 IBT-M 10160 10530 2752 4783/3800 7535/5600 Tubin 3-~/2" 9.2# 13-Cr VTHC 10160 10530 1695 7535/5600 9230/6711 ~•G X0.4 L-1231 Permit to Drill Page 2 ,.. • • Mud Pro ram: 12'/a" Surface Hole Mud Properties: Spud -Freshwater Mud Interval Densit Funnel Vis PV YP FL Chlorides PH Initial 8.5 - 9.2 250-300 20-50 50-70 NC-8.0 <500 8.5-9.0 Base Perm 9.0 - 9.5 300-250 20-45 40-55 8.0 <500 8.5-9.0 Interval TD 9.5 - 9.6 200-250 20-35 35-45 5.0-7.0 <500 8.5-9.0 8 3/a" Intermediate Hole Mud Properties: Freshwater Mud (LSND) Interval Density Funnel Vis PV YP FL pH Chlorides MBT Surface shoe to HRZ 8.8 - 38-50 12-18 26-35 4-6 9.0-9.5 <600 < 20 HRZ to Interval TD 38-50 12-18 24-32 3.0-4.5 9.0-9.5 <600 < 15 6'/8" Injection Hole Mud Properties: Freshwater Mud (Flo Pro SF) Interval Density PV YP LSRV HTHP FL pH Production hole 9.3 - 9.6 8-15 22-28 >20,000 4-6 9.0 - 9.5 Survey and Logging Program: 12-'/a" Hole Section: Surface Gyro MWD /LWD: Dir/GR O en Hole: None Cased hole: None 8-3/a" Hole Section: Sample as required by well site Geologist MWD /LWD: GR / Res /PWD (Real time), Den / Neu (Recorded) O en Hole: None Cased Hole: None 6-'/8" Hole Section: Sample in 50' intervals, MAD pass after TD MWD /LWD: GR / Res / Azm Den / Neu / ABI /PWD (All real time) O en Hole: None Cased Hole: None Surface and Anti-Collision Issues Surface Shut-in Wells: Nearb Wells S-116 S-44 S-118 Center to Center Distance ft 15 15 30 Current Status In'ector Producer SI Producer Production/Injection Rates BPD 1000 0 500 S-116 and S-44 will require surface shut-in and well house removal in order to move over well S-121. There are no wells lying within a quarter mile radius of the horizontal path, from reservoir to TD, of S-121. Close Approach Shut-in Wells: There are NO close approach wells requiring subsurface isolation for this profile. Close Approach Well List (Center to Center distance <100'): Well Name Ctr-Ctr Distance ft Reference MD ft Allowable Deviation ft Precautionary Comment S-214 73.8 557.8 64.5 Use Travelin C tinder G ro S-401 91.4 418.5 83.2 Use Travelin C Tinder G ro S-110 99.8 2326.9 44.0 Use Travelin C tinder G ro S-112 76.3 933.4 58.4 Use Travelin C tinder G ro S-116 15.2 439.8 7.6 Use Travelin C tinder G ro S-118 27.0 739.5 14.1 Use Travelin C tinder G ro S-200 44.4 497.9 36.4 Use Travelin C tinder G ro S-213 88.3 617.7 78.7 Use Travelin C tinder G ro L-123i Permit to Drill Page 3 f • Well Name Ctr-Ctr Distance ft Reference MD ft Allowable Deviation ft Precautionary Comment S-213A .88.1 602.0 78.7 Use Travelin C tinder G ro S-216 59.9 458.5 50.5 Use Travelin C tinder G ro S-42 76.7 450.0 68.7 Use Travelin C tinder G ro S-43 42.7 495.4 34.2 Use Travelin C tinder G ro S-44 14.7 458.0 7.3 Use Travelin C tinder G ro Cement Calculations: Casin Size: 9 5/a" in 40-Ib/ft L-80 BTC -Single Stage Calculations Basis: Lead: 250% excess over gauge hole in permafrost, 40% excess over gauge hole below permafrost Lead TOC: Surface r Tail: 1000' of open hole with 40% excess, plus 80' shoe track Tail TOC: 2377' MD, 1000' MD above the shoe Total Cement Volume: Spacer 80 bbls of Viscosified S er weighted to 10.0 ppg (Mud P II) Lead 439 bbls, 2461 cuft, s1<s 15.7 AS-1 G + adds - ..4 cuft/sk Tail 83 bbls, 472 cuft, sks 15.8 Class G + adds uft/sk Temp BHST = 58° F In the event that cement is not circulated to surface during the initial surface casing cement job, notify the AOGCC of the upcoming remedial cement work for possible witness of cement to surface. Size: 17" 26 Ib/ft L-80 BTC-M x TC-II -Two Stage Calculations Basis: Stage 1: Lead: 1080' o p n hole with 30% excess over gauge hole Lead TOC: 0 ' MD (Stage cementer in CM2) Tail: 1120' o pen hole with 30% excess, plus 80' shoe track Tail TOC: 8880' MD 500' MD above tanned to Ku aruk Stage 2: Lead: 1624' o pe hole with 30% excess Lead TOC: 4 76' D (within 1000' of surface shoe) Tail: 1800' pen hole with 30% excess Tail TOC: 6000' MD 250' MD above Ma Total Cement Volume: Spacer 1: 35 bbls of Viscosified Spacer (Mudpush II Design) Weighted to 10.8 ppg Sta e 1 Lead 38 bbls, 211 cuft, s'12.5 G + Gasblock - .3 uft/sk, Sta e 1 Tail: 42 bbls, 236 cuft, ,0 asks, 15.8 G + Gasblock - .16 uft/sk S acer 2: 35 bbls of Viscosi S acer Mud ush II Desi n Wei hted to 10.8 Sta e 2 Lead 57 bbls, 318 cuft, ks 12.5 G +Gasblok - .3 „cuft/sk Sta e 2 Tail 63 bbls, 352 cuft, 3 'sks 15.8 G +Gasblok -` .1 ~S cuft/sk Temp BHST =147° F ` Casin Size 4-~h" Production Liner Basis: Tail: Based on 2796' of open hole / 50 /° excess + 150' liner lap + 200' excess (4" DP) + 80' shoe track Cement Placement: From shoe to 923 ' MD TOL Total Cement Volume: Lead . -, and sks of Dowell Premium "G" with Gasblok at 15.8 Centralizer Recommendations: 9 5/e" Casing Centralizer Placement a) Run (25) 9 5/8" Bow-spring centralizers attached over the collar of each joint of casing from the casing shoe up to 1,000' MD above the shoe. b) Run 2 bow-spring centralizers on either side of the TAM Port Collar (if run). c) This centralizer program is subject to change due to actual hole conditions. L-123i Permit to Drill Page 4 • 7" String Centralizer Placement a) Place 2 rigid straight blade centralizers back to back at the very bottom of the shoe joint. Do not run any centralizers on the next two full joints. b) With the exception stated above, run one centralizer per joint, floating across the entire joint up to 1000' below the surface casing shoe. 4-~/2" Liner Centralizer Placement a) Place 1 rigid straight blade centralizer on every joint up to two joints from the window. Allow it to float across the entire joint. Well Control Well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind/shear rams, and Annular Preventer will be installed and are capable of handling the maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to 3,500 psi. Due to anticipated surface pressures not exceeding 3,000psi it will not be necessary to have two sets of pipe rams installed at all times. i BOP regular test frequency for S-121 will be 14 days. Diverter, BOPE and drilling fluid system schematics on file with the AOGCC. Intermediate Section • Maximum anticipated BHP: • Maximum surface pressure: • Planned BOP test pressure: • 7" Casing Test: • Leak Off Test - 8-3/4" hole: • Kick Tolerance: • Planned completion fluid: Production Section • Maximum anticipated BHP: • Maximum surface pressure: • Planned BOP test pressure: • 4 ~h" Casing Test: • Integrity Test - 6-'/s" hole: • Kick Tolerance: • Planned completion fluid: Disposal 3,532 psi - Kuparuk B (9.8 ppg EMW @ 6930' TVDss) 2,839 psi -Based on a full column of gas C~ 0.10 psi/ft 3,500 psi/250 psi Rams 2,500 psi/250 psi Annular 3,500 psi ~ 12.4 ppg minimum EMW LOT 20' from 9 5/8' shoe 51.8 bbls with a 10.4 ppg mud with 12.4 ppg LOT Estimated 9.2 ppg Brine / 6.8 ppg Diesel 3,200 psi - Kuparuk C (9.2 ppg @ 6,710' TVDss) 2,529 psi -Based on a full column of gas C~ 0.10 psi/ft 3,500 psi/250 psi Rams 2,500 psi/250 psi Annular / 3,500 psi 11.0 ppg minimum EMW FIT 20' from 7" shoe Infinite with a 9.4 ppg mud with 11.0 ppg LOT Estimated 9.2 ppg Brine / 6.8 ppg Diesel • No annular injection in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS- 04. Any metal cuttings will be sent to the North Slope Borough. • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS-04 for injection. Haul all Class I waste to Pad 3 for disposal. L-1231 Permit to Drill Page 5 • • Drilling Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control A. The Kuparuk C sands are expected to be pressured C«~ 9.2 ppg EMW. The Kuparuk B sands are expected to be pressured C«3 9.8 ppg EMW. 11. Hydrates and Shallow gas A. Gas Hydrates are present at S-pad and have been encountered in wells S-113, S-114, S-106 and S-102 throughout the SV5, SV4 and SV3. Setting casing below the SV3 should keep hydrate exposure from extending past the surface hole. Occasionally hydrates are encountered below the SVi . Recommended practices and precautions for drilling hydrates should be followed in the surface hole. III. Lost Circulation/Breathing A. Low to moderate risk of lost circulation. The most severe case of losses occurred on S-106 where there were no returns during a surface cement job. Consult the LCM decision tree if losses are incurred. B. Keep ECD's <12 ppg EMW to prevent breathing on this well. IV. Kick Tolerance/Integrity Testing A. The 9 5/" casing will be cemented to surface. B. The 7" casing will be cemented with 15.8 Ib/gal tail and 12.0 Ib/gal lead cement to 2876' MD. a. The Kick Tolerance for the surface casing is 8,t3bls with 10.4 ppg mud, 12.4 ppg LOT, and a 9.8 ppg pore pressure. =~_._`'~ C. The 4-'/z" production liner will be cemented with 15.8 ppg tai~ment to the liner top. a. The Kick Tolerance for the intermediate casing i nfinte with 9.4 ppg mud, 11.0 ppg FIT and a 9.2 ppg pore pressure. V. Stuck Pipe A. Stuck pipe has been a problem on two wells on this pad. On S-216 the 9-5/8" surface casing became stuck due to hole geometry. On S-102 stuck drill pipe occurred in the Schrader Bluff Sands, the BHA was not recovered. B. Gravel beds below the Permafrost will tend to slough in when aerated (hydrate cut) mud is being circulated out. Ensure adequate mud viscosity is maintained to avoid stuck pipe situations. C. Tight hole, hole packing-off, and lost returns have been encountered in previous wells on this pad. Pipe sticking tendency is possible if the HRZ shale gives problems. Back reaming at connections and good hole cleaning practices will contribute to favorable hole conditions VI. Hydrogen Sulfide S Pad is n~ designated as an H2S site, however Standard Operating Procedures for H2S precautions should be followed at all times. Recent H2S data from the pad is as follows: Adjacent producers at Surface: VII. Faults S-116 20 ppm `~ S-44 20 ppm ~y Adjacent producers at TD: S-105 20 ppm S-103 20 ppm A. Two faults are expected to be crossed by S-121. Low risk of lost circulation expected with these faults. Details are listed below for reference: Formation Where Encounter Fault MD Intersect TVD ss Intersect Est. Throw Throw Direction Uncertaint Fault #1 - CM-1 8780 6435 40' Southwest +/-100' Fault #2 - Ku aruk Horizontal 11,400 6750 15-20' Southwest +/-100' CONSULT THE S PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION L-123i Permit to Drill Page 6 • • S-121 Drill and Complete Operation Summary Pre-Rig Work: 1. The 5-121 conductor will be set on Slot # -3. 2. Weld an FMC landing ring for the FMC Gen 5 Wellhead on the conductor. 3. If necessary, level the pad and prepare location for rig move. 4. Prepare neighboring wells for the rig move and sim-ops production. Shut in 5-116, 5-118, and 5-44; remove well house as necessary. Rig Operations: 1. MIRU Nabors 9ES. ~,, 2. Nipple up diverter spool and function test diverter. PU 4" DP as required and stand back in derrick. 3. MU 12-1/a" drilling assembly with Dir/GR and directionally drill surface hole to approximately 3,376' MD. The actual surface hole TD will be +/-100' TVD below the top of the SV3 sands. An intermediate wiper/bit trip to surface will be performed prior to exiting the permafrost. 4. Run and cement the 9 5/8", 40.0-1b/ft, L-80, BTC surface casing back to surface. A TAM Port Collar should be on location as a contingency; to be run the casing string only if hole conditions dictate. Bump plug and ensure that floats hold. 5. ND diverter spool and NU casing /tubing head. NU BOPE and test to ,50 si. ~° 6. MU 8-3/a" drilling assembly with Dir/GR/Res/PWD (real time) and Az =~3en/Neu(recorded) and RIH to float collar. Circulate and condition cement contaminated mud. Displace over to new 8.8 ppg LSND mud. Test the 9 5/g" casing to 3,500 psi for 30 minutes. ~`"" 7. Drill new formation to 20' below 9 5/8" shoe and perform LOT. If a 12.4 ppg EMW is not obtained contact ODE. 8. Drill to ± 200' above the HRZ, ensure mud is conditioned and weighted to 10.4 ppg and perform short trip as needed. Ensure pre-reservoir meeting is held highlighting kick tolerance and detection prior to entering the HRZ. 9. Drill ahead to target TD at 10,000' MD, (approx 100' MD below LCU Kup B). ~' 10. Circulate and condition hole, POOH to run casing. Perform wiper trip if hole conditions dictate. 11. Run the 7", 26-1b/ft, L-80, BTC-M x TC-II production casing and cement in 2 stages. Bring TOC to /- 1000' below surface casing shoe by displacing the casing with mud. Bump plug and ensure that float holds. Freeze protect OA. 12. PU 6-'/8" dumb iron assembly and RIH and drill up ES cementer. 13. RU Schlumberger a-line. RIH w/ GR-CCL/JB to float collar. MU 7" EZSV and RIH. Set plug so that Baker window top is at top Kuparuk C sand (9,380' MD). 14. Pressure test casing to 3,500 psi for 30 minutes. ~ 15. MU and RIH w/ 7" Whipstock assembly. Set Whipstock such that window top is at the top of the Kuparuk C sand (9,380' MD). 16. Displace the casing with 9.4 ppg Flo-pro NT mud. Mill Window and drill 20' of new formation. Perform FIT test to 11.0 ppg EMW. POOH and LD milling assembly. 17. MU 6-'/g" build section BHA with MWD / GR / Res /Den / Neu /ABI /PWD (All real time). Build ~ to horizontal. POOH. 18. MU 6-'/8" drilling assembly with MWD / GR / Res /Den / Neu /ABI /PWD (All real time). 19. Drill ahead in Kuparuk C4 and C3 to proposed TD C 12175' MD / 6,890' TVD. MAD pass after TD. L-123i Permit to Drill Page 7 20. Run 4-1/a", 12.6-1b/ft, L-80, IBT-M solid liner. There will be 50' ~ overlap into the 7" intermediate casing. Cement liner as directed. Set liner top packer. R ~ ease from liner and displace well to filtered 9.2 ppg brine and POOH. Test liner to 3500 psi. % 21. PU DPC guns and RIH w/ ~ 1,500' of 2-1/2" Omega PJ 6 spf, 60° phasing perf guns. Tag PBTD for depth control. 22. Run 4-1/a", 12.6-1b/ft, L-80, IBT-M x 3-1/a" 9.2-1b/ft, L-80 x 13-Cr, Vam Top completion w/ Halliburton pressure gauge just above packer. RILD. Set packer and test tubing and annulus to ~ 3,500 psi for 30 minutes. 23. Shear DCK valve and install TWC. 24. Nipple down the BOPE. Nipple up and test the tree to 5,000 psi. Remove TWC. 25. RU hot oil truck. Freeze protect the well. Install BPV in tubing hanger. Install a VR plug in the 7"x 4-1/2" annulus valve and secure the well. Ensure that IA/OA are both protected with two barriers. 26. Rig down and move off. Post-Rig Work: 1. R/U Slickline and pull ball and rod / RHC. 2. Replace the DCK shear valve with a dummy GLV. 3. Pull dummy valves and replace with gas lift valves. 4. Pull VR plug. L-1231 Permit to Drill Page 8 S-1'21 Proposal completion ~ 9 5/8", 40.0#, L-80, 3,377 BTC 4-1/2", 12.6#, L-80, ,.4,800 IBT-M 2,200 HES 4 1/2" 'X' nipple; 1. D. = 3.813" Minimum ID = 2.813" @ 9,130' MD TREE = 4 1/16" CNV WELLHEAD= FMC ACTUATOR = KB. ELEV - LEO T8D CB. ELEV = TBD KOP = -Max Angle = 394' 94° @ 98050' Datum MD = 12,175' Datum TV D = 6,890' GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 1 -9070 6645 65° MMG Dum RK 2 -7600 5600 47 MMG Dum RK 3 -6570 5000 47 MMG Dum RK 4 -4800 3800 47 MMG DCK RK PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: Note: Refer to Production DB for historical perf data 3-1/2", 12.6#, L-80 x 13-G, IBT-Mx 7535 Vam Top Baker 7" X 3 1/2" Prenaer Packer ^'9170 VamTop 9,230 Baker HMC liner hngr, ZXP pkr, w / 9 230 TBs Baker Whip stock, 9,380 (Top of w indow ) HES 7" EZSV 9,400 7", 26.0#, L-80, 10,000 BTGM 9,110 Baker 3 1/2" CMD Sliding Sleeve; I.D. = 2.813" 9,130 HES 3 1/2"'X' nipple; I.D. = 2.813" -9150 HES 3 1/2" BHG w / I Wire to Surface 9,190 HES 3 1/2"'X' nipple; I.D. = 2.813" 9,210 HES 3 1/2"'X' nipple; I.D. = 2.813" TBD Pup W/'RA' Ta TBD Pup W!'RA' Tag 0 o k' a 1/z", 12.s #, I_-so, IsT-M 12,175 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNff WELL: S-121 PERMIT No: API No: BP Exploration (Alaska) ~ ~ Variance Request a ~SSIIe Compliance with AOGCC testing requirements for BOP rams after they have been used in the normal coarse of operations. Re uest The AOGCC is in the process of developing a guideline document clarifiing the intent of the regulations pertaining to function pressure testing ram type BOP's. BPXA requests a variance to the provisions of 20 AAC 25.035 (e)(10)C regarding the function pressure test requirement afiter the use of BOP ram type equipment for other than well control or equivalent purposes, except when the routine use of BOP ram type equipment may have compromised their effectiveness. (Example would be when pipe rams are inadvertently closed on a tool joint during routine operations.) The activities associated with this request will not compromise the integrity of the BOP equipment. Background AOGCC regulations require rams that have been used in the course of primary drilling & completion, workover and through tubing drilling operations be function pressure tested before the next wellbore entry. This is not a new regulation. The intent ofi this regulation is to ensure that ram type equipment has integrity after it has been utilized in a wellbore..:for example; to ensure integrity if a ram was closed on a tool joint. The exact regulation language is: "if BOP sealing ram type equipment has been used, it must be fiunc#ion pressure-tested, before the next wellbore entry, to the required working pressure specified in the approved Permit to Drill, using anon-compressible fluid, except that an annular type preventer need not be tested #o more than 50 percent ofi its rated working pressure;" The pertinent sections are: 20 AAC 25.035 (e)(10)C PRIMARY DRILLING AND COMPLETION; 20 AAC 25.036 (d)(4) THROUGH TUBING DRILLING AND COMPLETION; 20 AAC 25.285 (f)(2) TUBING WORKOVERS: 20 AAC 25.286(e)(1) WORKSTRING SERVICE OPERATIONS This issue has been discussed with Winton Aubert at the AOGCC. The test requirement in the regulation is intended to apply to ram type equipment only. The AOGCC understands that ram type BOP's are utilized for purposes other than well control in the normal coarse ofi operations. The regulations allowing a variance are at 20 AAC 25.035(h) PRIMARY DRILLING AND ~ COMPLETION; 20 AAC 25.036(f) THROUGH TUBING DRILLING AND COMPLETION; 20 AAC 25.285(h) TUBING WORKOVERS; 20 AAC 25.286(g) WORKSTRING SERVICE OPERATIONS...which says generally: 20 AAC 25.035(h)... Upon request of the operator, the commission will, in its discretion, approve a variance (1) from the BOPE requirements in (e) of this section if the variance provides at least an equally effective means of well control; S-PAD 27 26 ~ 25 S PAD _N_ 34 ~ 35 36 PROJECT ~Q~~~~~ AREA ~o T.12N. '` 3 T.11 N. 2 VICINITY MAP N.T.S. '~, d N c0 M n GO CO m ~ ID ID ID m ID ID ~ ~ ~ ~ m ~ m ~ N ~ ~ N ~ N N ~ ~ N ~ ~ ~ m- d d ', _ _ _ _ _ _ _ _ I I I I I 1 1 I I I I I I I I 1 I I I I 1 I I 1 1 I ~ I N N N (~ !n (~ N !n f~ (/I N (n N N (/) In N N !n N N N N !n !n !n f~ d I I I I (n N VI fn I ~ N ~ I N m n ! __ __ _ _ -- - _ _ _ ~-- J O a- z ~~~ ~ z _~ i- z w ~ ~ ~ _ X ' W NOTES: \ LEGEND 1. DATES OF SURVEY: JANUARY 16, 2006. ~- AS-STAKED CONDUCTOR 2. REFERENCE FIELD BOOKS: WO06-01, PGS. 17-20. ^ EXISTING CONDUCTOR 3. COORDINATES ARE ALASKA STATE PLANE, ZONE-4 NAD 27. 4. GEODETIC COORDINATES ARE NAD-27. 5. MPU S-PAD AVERAGE SCALE FACTOR IS: 0.9999165. 6. HORIZONTAL CONTROL IS BASED ON MONUMENTS S-3 & S-4. 7. BASIS OF VERTICAL CONTROL IS OPERATOR MONUMENTATION. ELEVATIONS ARE BP EXPLORATION MEAN SEA LEVEL DATUM. LOCATED WITHIN PROTRACTED SEC. 35. T. 12 N.. R. 12 F_. UMiAT MFRi~iAN. AI ASKA WELL A.S.P. PLANT GEODETIC GEODETIC GROUND SECTION N0. .COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) ELEV. OFFSETS S-121 Y=5,980,459.96 N 1010.00 70'21'18.965' ' " 70.3553500' 35 8' 4,257' FSL X= 618,929.99 E 395.00 149'02 03.000 149.0341631' . 4,501' FEL ° 1''. Kobert UKHWN: K~ b S CHECKED: SPM DATE: 1/16/06 '~~ DRAWING: FltB06 wos 01-80 WOA S-PAD SHEET: ~ ~~~OO Cho doe No. AS-STAKED CONDUCTOR ~ 0 1 18 0 ISSUED FOR AS-STAKED INFORMATION KVM SPN ETtlxrrn w,o uwo vnvE SCALE: ~ ~ ~ B N0. DATE REVISION gy CIIK ~~, ~~ ~~ s 1° = 100 5-121 by Schlumberger S-121 (P61 Proposal Report Date: February 7, 2006 Survey 1 DLS Computation Method: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 359.980° Field: Prudhoe Bay Unit - WOA SUucture 1 Slot: S-PAD / S-121 ~~ Vertical Section Origin: N 0.000 ft, E 0.000 ft ~~ TVD Reference Datum: Rotary Table Well: Plan S-121 ~~~~'~~ Borehole: Plan 5-121 ~B~ TVD Reference Elevation: 64.50 ft relative to MSL Sea Bed 1 Ground Level Elevation: 36.00 ft relative to MSL UWIIAPM: 50029 Magnetic Declination: 24.295° Survey Name 1 Date: 5-121 (P6) I February 7, 2006 Total Field Strength: 57593.198 nT Tort 1 AHD ! DDI 1 ERD ratio: 186.427° / 8862.69 ft 16.465 / 1.286 Magnetic Dip: 80.896° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: August 07, 2006 Location LaULong: N 70.35526815, W 149.03416663 Magnetic Declination Model: BGGM 2005 Location Grid NIE YIX: N 5980460.000 ftUS, E 618930.000 ftUS North Reference: True North Grid Convergence Angle: +0.90962706° Total Corr Mag North a True North: +24.295° Grid Scale Factor: 0.99991607 Local Coordinates Referenced To: WPII Head • Measured Vertical Comments Inclination Azimuth Sub-Sea TVD TVD NS EW DLS Tool Face Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de ft ft ft ft ft de 1100 ft de de 100 ft de 100 ft ttUS ftUS rop vvnipswcx ysau.vu oa.w saa.ao bnu.z'I b//4./l 55/3.Uy 55/3.Uy -1 .Sy U.UU U.UU(i U.UU U.UU bytt6U31.S21 tl9i12f3`J.tib N /U.3/U4y33'I W 14y.U341t3194 Base Whipstock 9393.00 67.08 359.98 6715.49 6779.99 5584.97 5584.97 -1.89 16.00 O.OOG 16.00 0.00 5986043.76 618839.45 N 70.37052576 W 149.03418197 KOP Crv 8.5/100 9405.00 67.08 359.98 6720.16 6784.66 5596.03 5596.03 -1.90 0.00 -9.81 G 0.00 0.00 5986054.81 618839.27 N 70.37055596 W 149.03418200 9500.00 75.04 358.56 6750.97 6815.47 5685.80 5685.80 -3.07 8.50 -9.35G 8.38 -1.49 5986144.55 618836.68 N 70.37080121 W 149.03419151 9600.00 83.43 357.17 6769.63 6834.13 5783.89 5783.88 -6.74 8.50 -9.09G 8.39 -1.39 5986242.55 618831.45 N 70.37106917 W 149.03422132 End Crv 9669.42 89.26 356.24 6774.05 6838.55 5653.02 5853.01 -10.71 8.50 O.OOG 8.39 -1.34 5986311.60 618826.38 N 70.37125802 W 149.03425364 Crv 8/100 9738.49 89.26 356.24 6774.94 6839.44 5921.93 5921.93 -15.24 0.00 15.57G 0.00 0.00 5986380.43 618820.76 N 70.37144629 W 149.03429040 S-121 Tgt 1 9748.09 90.00 356.45 6775.00 6839.50 5931.51 5931.51 -15.85 8.00 16.10G 7.71 2.15 5986390.00 618820.00 N 70.37147246 W 149.03429537 End Crv 9797.44 93.79 357.55 6773.37 6837.87 5980.77 5980.76 -18.43 8.00 O.OOG 7.69 2.22 5986439.20 618816.63 N 70.37160702 W 149.03431637 Crv 8/100 10202.37 93.79 357.55 6746.58 6811.08 6384.44 6384.43 -35.73 0.00 -174.78G 0.00 0.00 5986842.51 618792.93 N 70.37270981 W 149.03445693 S-121 Tgt 2 10249.99 90.00 357.20 6745.00 6809.50 6431.98 6431.96 -37.91 8.00 -176.13G -7.97 -0.73 5986890.00 618790.00 N 70.37283966 W 149.03447466 10300.00 86.01 356.93 6746.74 6811.24 6481.88 6481.87 -40.47 8.00 -176.12G -7.98 -0.54 5986939.85 618786.65 N 70.37297600 W 149.03449545 10400.00 78.03 356.38 6760.62 6825.12 6580.67 6580.65 -46.24 8.00 -176.04G -7.98 -0.55 5987038.52 618779.31 N 70.37324586 W 149.034 End Crv 10438.89 74.92 356.16 6769.71 6834.21 6618.40 6618.38 -48.70 8.00 O.OOG -7.98 -0.57 5987076.21 618776.25 N 70.37334893 W 149.0345 Crv 8.5/100 10498.99 74.92 356.16 6785.34 6849.84 6676.30 6676.28 -52.59 0.00 20.12G 0.00 0.00 5987134.03 618771.44 N 70.37350710 W 149.03459399 10500.00 75.00 356.19 6785.61 6850.11 6677.27 6677.25 -52.66 8.50 20.12G 7.98 3.03 5987135.00 618771.36 N 70.37350976 W 149.03459452 10600.00 83.00 359.12 6804.67 6869.17 6775.26 6775.24 -56.64 8.50 19.55G 8.00 2.94 5987232.91 618765.83 N 70.37377747 W 149.03462687 S-121 Tgt 3 10687.33 90.00 1.60 6810.00 6874.50 6862.36 6862.34 -56.08 8.50 19.46G 8.01 2.84 5987320.00 618765.00 N 70.37401541 W 149.03462236 10700.00 91.02 1.96 6809.89 6874.39 6875.03 6875.01 -55.69 8.50 19.46G 8.01 2.83 5987332.67 618765.19 N 70.37405002 W 149.03461916 End Crv 10724.97 93.02 2.67 6809.01 6873.51 6899.97 6899.95 -54.68 8.50 O.OOG 8.01 2.84 5987357.62 618765.80 N 70.37411814 W 149.03461098 Crv 8/100 11443.36 93.02 2.67 6771.20 6835.70 7616.57 7616.56 -21.30 0.00 146.OOG 0.00 0.00 5988074.61 618787.80 N 70.37607586 W 149.03433970 S-121 Tgt 4 11488.83 90.00 4.70 6770.00 6834.50 7661.92 7661.92 -18.38 8.00 147.62G -6.64 4.47 5988120.00 618790.00 N 70.37619976 W 149.03431596 11500.00 89.25 5.18 6770.07 6834.57 7673.05 7673.04 -17.42 8.00 147.62G -6.76 4.28 5988131.14 618790.78 N 70.37623016 W 149.03430814 End Crv 11560.57 85.16 7.78 6773.03 6837.53 7733.14 7733.14 -10.60 8.00 O.OOG -6.75 4.30 5988191.33 618796.65 N 70.37639434 W 149.03425268 TD / 4-1 /2" Lnr 12175.89 85.16 7.78 6825.00 6889.50 8340.59 8340.62 72.41 0.00 O.OOG 0.00 0.00 5988800.00 618870.00 N 70.37805391 W 149.03357791 WeIlDesign Ver SP 1.0 Bld( docAOx_56) S-121\Plan 5-121\Plan 5-121\S-121 (P6) Generated 2/7/2006 11:50 AM Page 1 of 1 by Schlumberger WELL S-121 (P6) FIELD Prudhoe Bay Unit - WOA STRUCNRE S-PAD Magnetic Parameters Sur!ace Caution NA03] Plaska SMte Platws. Zone 04. US Feet Miscellareous MOEeI' 6GGM 2005 D®'- 80.996' Dale. August U].3W6 NoMUg 5960afi000 M1US GriO COm. b90962]0fi° 5 Sbt. 5-131 NO ReI-. Rgary Table if%5011 above MSLI Mag Dec: 0395" (S. 5]5933nT Eaabp. 61893000 M15 Smk Fad: 0.9999t6p6]6 3000 Plan. 51311P6i Srvy OMe February 0]. 2006 5200 5600 6000 6400 6800 7200 7600 8000 8400 6400 O O C ~ 6800 l0 U ?~ F 7200 I (P2) .....................:..................................:...................................: ..................................:..................................{..................................;..................................;..................................i..................................: i Tap Whipstock Basa Whipstock KOP Crv 8.51100 S-121 Tgt 1 5-721 Tgt 2 ~~iv-$I1bb~ ~ £nd Crv Crv 81700 End Crv 5-~21 Tgt 3 5.121 Tgt 4 End Crv TD 141Y1" lnr Crv 8.51100 End Crv Crv BI100: End Crv u..: touo..u..ao.yu... ..r........ r............. .... .. ..,..uu~...n.r..rr.r, :. .ra........ .~. ...u...... .. ..ru...rr.r..r.~uo.~.un~u~u.u.u.r .r. .r. r.....,.~..~ao:~n~u~u~u.u..l.rr .....................t.........~,~.71CC4........... ,. ................ ......... ;................................ '. ............... .... ........i..... .... ......................t................................... .... ...........................i............................ ....i -121 PB7 (P2) 6400 6800 (P6) 7200 5200 5600 6000 6400 6800 7200 7600 8000 8400 Vertical Section (ft) Azim = 359.98°, Scale = 1(in):400(ft) Origin = 0 N/-S, 0 E/-V by . • Schlumberger WELL FIELD STRUCTURE S-121 (P6) Prudhoe Bay Unit - WOA S-PAD Magnetic Paramelars Surtace Lwal~on NAD2]Naska $N1x Planes. Zone 04, US Feat AllsceAaneous Maley. BGGM 2005 Oq 80996' Dale ~uglrsl 0]. 3006 Lal N]02"6965 Ndtfiing 59g04fi000 SUS GIIG Donv •090962]Ofi' 6~r2r ND ReI Rdary Table !645011 a6ovx MSLI Mag Dec •24295' FG'. 5]69]2nT Lrn~: W1492JO00 Eadvlg 1893000 tt115 Srv4 Fad. 0.9995 t 606)6 5131 !P6) Srvy Dale: Fe6Nary 0]. 3006 -1000 -500 0 500 1000 8500 8000 7500 n n n Z ~ 7000 0 0 c a~ m U ~ 6500 v v v 6000 5500 5000 8500 8000 7500 7000 6500 6000 5500 5000 -1000 -500 0 500 1( c« W Scale = 1(in):500(ft) E »> BP Alaska Anticollision Report r Company: BP Amoco Date: 2!7/2006 Time; 12:06:36 Page: 1 Field: Prudhoe Bay Reference Site: PB S Pad Co-ordinate(NL~) Reference: Well: Plan S-121, Tru e North Reference Well: Plan S-121 Vertical ('CVD) Reference: Plan S-121 64.5 Reference Wellpath: Plan S-121 Db: Oracle ' NO GLOBAL SCAN: Using user defined selection & scan criteria Reference: Principal Plan 8 PLANNED PROGRAM ', Interpolation Method : MD Interval: 20.00 ft Error Model: ISCWSA Ellipse Depth Range: 9380.00 to 12175.89 ft Scan Method: Trav Cylinder North Maximum Radius:10000.00 ft Error Surface: Ellipse + Casing Survey Program for Desnitive Wellpath i Date: 2/7/2006 Validated: No Version: 4 Planned From To Survey Toolcode Tool Name ft ft i 28.50 1000.00 Planned: Plan #2 V1 (0) GYD-GC-SS Gyrodata gyro single shots ~, t 1000.00 9380.00 Planned: Plan #2 Vi (0) MWD+IFR+MS MWD +IFR + Multi Station 9380.00 12175.89 Planned: Plan #6 V1 MWD+IFR+MS MWD +IFR + Multi Station Casing Points 11iD "1'Vll Diameter Hole Size Namc ft ft in in 3376.52 2849.50 9.625 12.250 9 5/8" - 9380.00 6774.71 I 7.000 8.750 7" I 12175.89 6889.50 4.500 6.750 4 1 /2" Summary <--------------- Offset Wellpath --------------> Reference Offset Ctr-Ctr :Vo-Go Allowable Site WeII Wellpath MD MD Distance Area Deviation Warning ft ft ft ft ft ~ r PB S Pad Plan S-121 Plan S-121PB1 V1 Plan: 9380.00 9380.00 0.00 0.66 -0.66 FAIL: NOERRORS ', PB S Pad Plan S-203 Plan S-203 (East) V3 P Out of range PB S Pad Plan S-203 Plan S-203 (West) V5 P Out of range PB S Pad Plan S-208 Plan S-208 VO Plan: S- Out of range i PB S Pad Plan S-214 Plan S-214 V1 Plan: S- Out of range PB S Pad Plan S-401 Plan S-401 V3 Plan: PI Out of range ~ j PB S Pad S-01A S-01A V1 Out of range ' PB S Pad S-01 B S-01 B V1 Out of range PB S Pad S-01 S-01 V1 Out of range PB S Pad S-02AP61 S-02AP61 V1 Out of range PB S Pad S-02A S-02A V1 Out of range ' PB S Pad S-02 S-02 V1 Out of range PB S Pad S-03 S-03 V1 9380.00 12180.00 5352.46 249.22 5103.24 Pass: Major Risk PB S Pad S-04 S-04 V1 Out of range PB S Pad S-05AP61 S-05AP61 V1 Out of range PB S Pad S-05A S-05A V1 Out of range PB S Pad S-05 S-05 V1 Out of range PB S Pad S-06 S-06 V1 Out of range ~i PB S Pad S-07A S-07A V1 Out of range I PB S Pad S-07 S-07 V1 I Out of range PB S Pad S-08 S-08 V1 Out of range i PB S Pad S-08 S-08A V2 Out of range PB S Pad S-08 S-08B V3 Out of range !, PB S Pad S-09 S-09 V1 Out of range I PB S Pad S-100 S-100 V10 Out of range i. PB S Pad S-101 S-101 V3 Out of range PB S Pad S-101 S-101 PB1 V9 Out of range ', PB S Pad S-102 S-102 V11 9855.19 9820.00 4421.29 303.30 4117.99 Pass: Major Risk PB S Pad S-102 S-102L1 VS 9855.19 9820.00 4421.29 302.65 4118.64 Pass: Major Risk PB S Pad S-102 S-102L1 P61 V7 9855.19 9820.00 4421.29 302.54 4118.75 Pass: Major Risk i PB S Pad S-102 S-102PB1 V14 Out of range PB S Pad S-103 S-103 V6 9392.60 9820.00 3335.40 312.43 3022.97 Pass: Major Risk PB S Pad S-104 S-104 V1 Out of range PB S Pad S-105 S-105 V5 Out of range PB S Pad S-106 S-106 V2 10014.43 11360.00 7969.38 230.02 7739.35 Pass: Major Risk l PB S Pad S-106 S-106PB1 V12 i Out of range ~~ PB S Pad S-107 S-107 V36 9787.05 10720.00 6135.05 251.53 5883.52 Pass: Major Risk PB S Pad S-108 S-108 V6 Out of range PB S Pad I S-109 S-109 V8 Out of range I PB S Pad S-109 S-109PB1 V2 Out of range !, PB S Pad S-10APB1 S-10APB1 V1 Out of range ~, BP Alaska Anticollision Report Company: BP Amoco Dare: 2!7/2006 Time: 12:06:36 PaKe: 2 Ficld: Prudhoe Bay Reference Site: PB S Pad Co-ordinate(NE) Reference: Well: Plan S-121, Tru e North Reference Well: Plan S-121 Vertical (TV D) Rcference: Plan S-121 64.5 ~~_ Reference Wellpath: Plan S-121 Db: Oracle ~ Summary ~ ~ <~~_~__~_ O tl'set Wellpath - ------> Reference Offset Ctr-Ctr No-Co Allowable Site Well Wellpath MD MD Distance Area Deviation Warning ft ft ft ft ft ', PB S Pad S-10A S-10A V1 Out of range ~' PB S Pad S-10 S-10 V1 Out of range ', PB S Pad S-110 S-110 V18 Out of range '; ' , PB S Pad S-111 S-111 V10 11552.92 10680.00 1496.31 252.94 1243.37 Pass: Major Risk PB S Pad S-111 S-111 P61 V5 11552.92 10680.00 1496.31 252.73 1243.58 Pass: Major Risk PB S Pad S-111 S-111 P62 V2 11552.92 10680.00 1496.31 252.94 1243.37 Pass: Major Risk PB S Pad S-112 S-112 V20 Out of range PB S Pad S-113 S-113 V14 Out of range PB S Pad S-113 S-113A V3 Out of range PB S Pad S-113 S-1138 V6 Out of range PB S Pad S-114 S-114 V13 Out of range ~ PB S Pad S-114 S-114A V6 Out of range ', PB S Pad S-115 S-115 ST V1 Plan: Plan Out of range PB S Pad S-115 S-115 V7 Out of range ' PB S Pad S-116 S-116 V6 Out of range PB S Pad S-117 S-117 V4 Out of range ' PB S Pad S-118 S-118 V5 Out of range PB S Pad S-119 S-119 V7 10072.66 9460.00 5776.78 238.82 5537.97 Pass: Major Risk PB S Pad S-11 S-11 V4 Out of range ', PB S Pad S-11 S-11 A V1 Out of range PB S Pad S-11 S-11 B V1 Out of range ', PB S Pad S-120 S-120 V4 Out of range PB S Pad S-122 S-122 V9 9843.99 9500.00 1931.85 229.86 1701.98 Pass: Major Risk PB S Pad S-122 S-122PB1 V4 9843.99 9500.00 1931.85 229.54 1702.31 Pass: Major Risk ', PB S Pad S-122 S-122PB2 V2 9843.99 9500.00 1931.85 229.88 1701.97 Pass: Major Risk PB S Pad S-122 S-122PB3 V2 9843.99 9500.00 1931.85 229.86 1701.98 Pass: Major Risk PB S Pad S-123 S-123 V10 Out of range !~ PB S Pad S-12A S-12A V1 Out of range '~ PB S Pad S-12 S-12 V1 Out of range ~ PB S Pad S-13 S-13 V1 Out of range PB S Pad S-14 S-14 V5 Out of range '~ '~ PB S Pad S-14 S-14A V3 Out of range ', PB S Pad S-15 S-15 V2 9380.00 11800.04 3560.01 220.32 3339.69 Pass: Major Risk PB S Pad S-16 S-16 V1 Out of range '~~ PB S Pad S-17 S-17 V1 Out of range ', PB S Pad I S-17 S-17A V1 Out of range ', PB S Pad S-17 S-17AL1 V1 Out of range I PB S Pad S-17 S-17AP61 V1 Out of range !~ PB S Pad S-17 S-17B V1 Out of range ' PB S Pad S-17 S-17C V1 Out of range PB S Pad S-17 S-17CP61 V2 Out of range PB S Pad S-17 S-17CP62 V1 Out of range PB S Pad S-18 S-18 V1 Out of range ' PB S Pad S-18 S-18A V16 Out of range ~~ PB S Pad S-19 S-19 V1 Out of range ~~ PB S Pad S-200 S-200 V1 Out of range PB S Pad S-200 S-200P81 V10 Out of range ~I PB S Pad S-201 S-201 V2 Out of range ', PB S Pad S-201 S-201 PB1 V11 Out of range PB S Pad S-20 S-20 V4 Out of range ' PB S Pad S-20 S-20A V2 Out of range PB S Pad S-213 S-213 V9 Out of range PB S Pad S-213 S-213A V22 Out of range PB S Pad S-213 S-213AL1 V9 Out of range j PB S Pad S-213 S-213AL1-01 V7 Out of range PB S Pad S-213 S-213AL2 V5 Out of range ', PB S Pad S-213 S-213AL3 V7 Out of range ', ~ PB S Pad S-215 S-215 V9 Out of range '~ PB S Pad S-216 S-216 V2 Out of range PB S Pad S-21 S-21 V1 Out of range PB S Pad S-22A S-22A V1 Out of range ; PB S Pad S-226 S-22B V2 Out of range PB S Pad S-22 S-22 V1 Out of range BP Alaska Anticollision Report Company: BP Amoco Field: Prudhoe Bay Reference Sitr. PB S Pad Reference Well: Plan S-121 Reference Wellpath: Plan S-121 Summary <---------- O ffset Wellpath -- -> Site Well Wellpath Date: 2/7/2006 Time: 12:06:36 Page: 3 Co-ordinate(NE) Reference: Well: Plan S-121, True North Vertical (f VD) Reference: Plan S-121 64.5 Dh: Oracle Reference Offset Ctr-Ctr No-Go Allowable MD MD Distance Area Deviation Warning ft ft ft ft ft PB S Pad S-23 S-23 V1 9380.00 11300.00 3096.85 208.74 2888.11 Pass: Major Risk PB S Pad S-24 S-24 V5 Out of range PB S Pad S-24 S-24A V1 Out of range PB S Pad S-24 S-246 V2 Out of range PB S Pad S-25AP61 S-25AP61 V2 Out of range PB S Pad S-25A S-25A V1 Out of range PB S Pad S-25 S-25 V1 Out of range PB S Pad S-26 S-26 V1 Out of range PB S Pad S-27 S-27 V1 Out of range PB S Pad ~ S-27 S-27A V3 Out of range i PB S Pad S-27 S-276 V7 Out of range PB S Pad S-28 S-28 V4 Out of range PB S Pad S-28 S-28A V1 Out of range PB S Pad S-28 S-286 V2 Out of range PB S Pad S-28 S-28BP61 V7 Out of range PB S Pad S-29AL1 S-29AL1 V1 Out of range PB S Pad S-29A Plan S-29AL2 VO Plan: Out of range PB S Pad S-29A S-29A V1 Out of range PB S Pad I S-29 Plan S-296 V1 Plan: S- Out of range ~ PB S Pad S-29 S-29 V1 Out of range ', PB S Pad S-30 S-30 V1 Out of range ', PB S Pad S-31A S-31A V3 9600.00 13038.00 2925.47 208.38 2717.09 Pass: Major Risk ', PB S Pad S-31 S-31 V1 Out of range PB S Pad S-32 S-32 V1 Out of range PB S Pad S-33 S-33 V1 Out of range PB S Pad S-34 S-34 V1 Out of range PB S Pad S-35 S-35 V1 Out of range PB S Pad S-36 S-36 V1 Out of range PB S Pad S-37 S-37 V1 Out of range PB S Pad S-38 S-38 V1 Out of range PB S Pad S-400 S-400 V4 Out of range PB S Pad S-40A S-40A V1 Out of range PB S Pad S-40 S-40 V1 Out of range ' PB S Pad S-41 L1 S-41 L1 V1 9380.00 12060.00 6182.95 330.75 5852.20 Pass: Major Risk PB S Pad S-41 PB1 S-41 PB1 V1 9380.00 11860.00 6024.52 331.56 5692.96 Pass: Major Risk j PB S Pad S-41 S-41 V1 9380.00 12040.00 6165.19 330.37 5834.82 Pass: Major Risk PB S Pad S-42PB1 S-42P61 V1 Out of range PB S Pad S-42 S-42 V2 Out of range PB S Pad S-43L1 S-43L1 V2 Out of range PB S Pad S-43 S-43 V3 Out of range PB S Pad S-44L1 PB1 S-44L1 PB1 V3 Out of range I~ PB S Pad S-44L1 S-44L1 V5 Out of range !~ PB S Pad S-44 S-44 V10 Out of range • • Field: Prudhoe Bay Site: PB S Pad Well: Plan 5-121 Wellpath: Plan 5-121 (oo loo tsu Trnvelling Cylinder Azimu[h (TFO+AZI) [deg] vs Cen[re [o Centre Separntion [(OOfVin] e . Target: 5-121 Poly Site: PB S Pad Drilling Target Conf.: 95% Description: Map Northing: 5986509.00 ft Map Easting :618823.00 ft Latitude: 70°22' 18.471 N Polygon X ft Y ft 1 -172.66 -606.39 2 -254.87 1145.29 3 -31.86 2592.05 4 268.13 2587.29 5 125.11 1139.25 6 187.32 -612.10 Well: Plan S-121 Based on: Planned Program Vertical Depth: 6720.00 ft below Mean Sea Level Local +N/-S: 6050.44 ft Local +E/-W: -10.96 8 _ Longitude: 149°02'03.320_W Map E ft Map N ft 618660.00 5985900.00 618550.00 5987650.00 618750.00 5989100.00 619050.00 5989100.00 618930.00 5987650.00 619020.00 5985900.00 10000 X500 -, -~ I i' ' I ~~ ~; ~~ ~~ ~ ~ i ;' 1 ', CI I !~ '~ !, I!, ~~ I, ~, I~ ,, ~ `~ ~l i~l '~I ~~ 'i ~ '~,~ ,; ~~ ~ ~, ~~ _~ 8 0 0 0 8500 8000 X500 6500 6000 5500 5000 i -, , i ~., . - . . I x _ _ _ _ i ~ i i ~ -- a Y II - - _ < - _' _ . c z ~ G . I I F (n b N ~ ^ N - ~_~ . . ~ ~ i ~ ~ S _.._ I ._ --- I I I I I '. Zt. V Cz-- Z _~5 >i;5 z = _- - ? 3. ~ =<~i,u: x deer= YYxYt z_i%~= ~~f~. a a ~ui;800L] (+)4uoW(-)4lnog by S-121 PB1 Report Date: January 5, 2006 Client: BP Exploration Alaska Field; Prudhoe Bay Unit - WOA Stmaure 1 slot: Well: S-PAD / S-121 ~ ~~' ~~ Plan S-121 Borehole: ~ PIanS-121PB1 UWIIAPI#: 50029 Survey Name 1 Date: S-121 PB1 (P2) I January 5, 2006 Tort I AHD 1 DDI I ERD ratio: 109.648° / 6648.77 ft / 6.015 / 0.945 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feel Location LaHLong: N 70.35526815, W 149.03416663 Location Grid NIE YIX: N 5980460.000 ftUS, E 618930.000 ftUS Grid Convergence Angle: +0.90962706° Schlumberger Proaosal Vertical SecOon Azimuth: 359.980° Vertical Section Origin: N 0.000 ft, E 0.000 ft TVD Reference Datum: Rotary Table TVD Reference Elevation: 64.50 ft relative to MSL Sea Bed 1 Ground Level Elevation: 36.00 ft relative to MSL Magnetic Declination: 24.393° Total Field Strength: 57592.759 nT Magnetic Dip: 80.892° Declination Date: May 04, 2006 Magnetic Declination Model: BGGM 2005 North Reference: True North Total Corr Mag North -> True North: +24.393° Local Coordinates Referenced To: Well Head Measured Vertical Comments Inclination Azimuth Sub-Sea TVD TVD NS EW DLS Tool Face Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de it ft ft ft it de 700 ft de de 100 ft de 1100 ft ftUS ftUS Klt V. UU U.UU tfS .UU -b4.0U U. UU U.UU U.UU U. UU U.UU 2f5.UUM U.UU U.UU b`JtfU4bU. UU t7'ItSy3U.UU N /U. :SbbltitSlb W 14y. U34'Ititi(i~ KOP Bld 1.5/100 300. 00 0.00 85 .00 235.50 300. 00 0.00 0.00 0. 00 0.00 85.OOM 0.00 0.00 5980460. 00 618930.00 N 70. 35526815 W 149. 03416663 Gl 394. 51 1.42 85. 00 330.00 394. 50 0.10 0.10 1. 16 1.50 85.OOM 1.50 0.00 5980460. 12 618931.16 N 70.35526843 W 149. 03415717 Bld 3.5/100 400. 00 1.50 85 .00 335.49 399. 99 0.11 0.11 1. 30 1.50 85.OOM 1.50 0.00 5980460. 13 618931.30 N 70. 35526846 W 149. 03415604 500. 00 5.00 85 .00 435.31 499. 81 0.61 0.61 6. 95 3.50 85.OOM 3.50 0.00 5980460 .72 618936.94 N 70. 35526981 W 149. 03411019 600. 00 8.50 85 .00 534.60 599. 10 1.63 1.63 18. 66 3.50 O.OOG 3.50 0.00 5980461. 93 618948.63 N 70. 35527261 W 149. 03401513 700. 00 12.00 85 .00 632.99 697. 49 3.17 3.18 36. 38 3.50 O.OOG 3.50 0.00 5980463 .76 618966.32 N 70. 35527685 W 149. 03387121 800, 00 15.50 85 .00 730.11 794. 61 5.23 5.25 60. 06 3.50 O.OOG 3.50 0.00 5980466 .21 618989.96 N 70. 35528251 W 149. 03367898 900. 00 19.00 85 .00 825.60 890. 10 7.81 7.84 89. 59 3.50 O.OOG 3.50 0.00 5980469 .26 619019.45 N 70. 35528956 W 149. 03343914 1000. 00 22.50 85 .00 919.10 983. 60 10.88 10.93 124. 88 3.50 O.OOG 3.50 0.00 5980472 .91 619054.68 N 70. 35529800 W 149. 03315260 1100. 00 26.00 85 .00 1010.26 1074. 76 14.45 14.50 165. 79 3.50 O.OOG 3.50 0.00 5980477. 13 619095.53 N 70. 35530777 W 149. 03 2 1200. 00 29.50 85 .00 1098.74 1163. 24 18.49 18.56 212. 17 3.50 O.OOG 3.50 0.00 5980481. 93 619141.83 N 70. 35531885 W 149. 03 4 Crv 3.5/100 1214. 29 30.00 85 .00 1111.15 1175. 65 19.10 19.18 219. 23 3.50 -95.OOG 3.50 0.00 5980482. 66 619148.88 N 70. 35532054 W 149. 032 050 1300. 00 29.87 78 .99 1185.44 1249. 94 25.03 25.13 261. 54 3.50 -89.79G -0.15 -7.01 5980489. 27 619191.09 N 70. 35533678 W 149. 03204293 1400. 00 30.07 71 .99 1272.09 1336. 59 37.52 37.63 309. 83 3.50 -83.73G 0.20 -7.00 5980502. 54 619239.17 N 70. 35537094 W 149. 031 ti5082 1500. 00 30.63 65 .15 1358.41 1422. 91 55.96 56.09 356. 79 3.50 -77.82G 0.56 -6.84 5980521. 74 619285.83 N 70. 35542135 W 149. 03126949 1600. 00 31.54 58 .60 1444.07 1508. 57 80.28 80.42 402. 25 3.50 -72.21 G 0.91 -6.55 5980546. 79 619330.89 N 70. 35548783 W 149. 03090035 1700. 00 32.76 52 .44 1528.76 1593. 26 110.40 110.55 446. 04 3.50 -66.99G 1.22 -6.17 5980577. 61 619374.19 N 70. 35557014 W 149. 03054478 SV6 1749. 23 33.47 49. 56 1570.00 1634. 50 127.32 127.48 466.93 3.50 -64.58G 1.44 -5.84 5980594. 87 619394.81 N 70. 35561638 W 149. 03037511 1800. 00 34.26 46 .71 1612.16 1676. 66 146.19 146.36 487. 99 3.50 -62.21 G 1.57 -5.62 5980614. 08 619415.56 N 70. 35566796 W 149. 03020411 1900. 00 36.01 41 .44 1693.95 1758. 45 187.53 187.72 527. 95 3.50 -57.90G 1.75 -5.27 5980656. 06 619454.86 N 70. 35578093 W 149. 02987961 2000. 00 37.97 36 .62 1773.83 1838. 33 234.27 234.46 565. 77 3.50 -54.05G 1.96 -4.82 5980703. 40 619491.93 N 70. 35590863 W 149. 02957248 End Crv 2046. 19 38.94 34 .54 1810.00 1874. 50 257.63 257.83 582. 48 3.50 O.OOG 2.10 -4.51 5980727. 02 619508.26 N 70. 35597245 W 149. 02943682 WeIlDesign Ver SP 1.0 Bld( doc40x_56) S-121\Plan S-121\Plan S-121P61\S-121P61 (P2) Generated 1/5/2006 10:27 AM Page 1 of 3 Comments Measun:d Inclination Azimuth Sub~Sea TVD TVD Vertical NS EW DLS Tool Face Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft d de ft ft ft ft ft de H00 ft de de 100 ft de 1100 ft ftUS ftUS ttase rerm [770.4/ :ftf.y4 ;i4.b4 7ti(iU.UU 7yL4.bU 1yU.'JU 157.77 (iUb.38 U.UU U.000i U.UU U.UU bytlU/(iU.(ili (i7yb;fU.(i;i N /U.3b(iU6338 W 749.U292bU8U Crv 3.5/100 2174.76 38.94 34.54 1910.00 1974.50 324.18 324.40 628.29 0.00 -91.99G 0.00 0.00 5980794.30 619553.01 N 70.35615430 W 149.02906477 2200.00 38.92 33.13 1929.64 1994.14 337.35 337.57 637.12 3.50 -90.90G -0.09 -5.57 5980807.61 619561.63 N 70.35619029 W 149.02899306 2300.00 39.00 27.56 2007.42 2071.92 391.55 391.79 668.85 3.50 -86.57G 0.08 -5.57 5980862.32 619592.49 N 70.35633839 W 149.02873531 2400.00 39.34 22.05 2084.98 2149.48 448.83 449.07 695.32 3.50 -82.29G 0.34 -5.52 5980920.01 619618.04 N 70.35649489 W 149.02852037 SV5 2458.34 39.65 18.87 2130.00 2194.50 483.58 483.83 708.28 3.50 -79.84G 0.54 -5.44 5980954.97 619630.45 N 70.35658983 W 149.02841508 2500.00 39.93 16.64 2162.01 2226.51 508.97 509.22 716.41 3.50 -78.12G 0.67 -5.37 5980980.48 619638.18 N 70.35665919 W 149.02834905 2600.00 40.77 11.39 2238.24 2302.74 571.74 572.00 732.05 3.50 -74.12G 0.84 -5.25 5981043.50 619652.82 N 70.35683070 W 149.02822197 2700.00 41.84 6.34 2313.38 2377.88 636.92 637.18 742.19 3.50 -70.33G 1.07 -5.05 5981108.82 619661.92 N 70.35700876 W 149.02813963 SV4 2702.17 41.87 6.23 2315.00 2379.50 638.36 638.62 742.35 3.50 -70.25G 1.18 -4.94 5981110.27 619662.05 N 70.35701270 W 149.0281 4 2800.00 43.12 1.52 2387.15 2451.65 704.25 704.51 746.78 3.50 -66.77G 1.28 -4.82 5981176.22 619665.43 N 70.35719272 W 149.02 2900.00 44.60 356.93 2459.27 2523.77 773.50 773.76 745.80 3.50 -63.46G 1.47 -4.58 5981245.43 619663.36 N 70.35738188 W 149.02 3000.00 46.24 352.60 2529.47 2593.97 844.39 844.65 739.27 3.50 -60.42G 1.65 -4.34 5981316.20 619655.70 N 70.35757555 W 149.02816318 End Crv 3062.51 47.35 350.01 2572.27 2636.77 889.42 889.68 732.37 3.50 O.OOG 1.78 -4.14 5981361.12 619648.09 N 70.35769857 W 149.02821916 SV3 3228.91 47.35 350.01 2685.00 2749.50 1009.97 1010.22 711.13 0.00 O.OOG 0.00 0.00 5981481.29 619624.95 N 70.35802789 W 149.02839152 9-5/8" Csg Pt 3376.52 47.35 350.01 2785.00 2849.50 1116.90 1117.15 692.30 0.00 O.OOG 0.00 0.00 5981587.90 619604.42 N 70.35832000 W 149.02854440 SV2 3457.70 47.35 350.01 2840.00 2904.50 1175.72 1175.95 681.94 0.00 O.OOG 0.00 0.00 5981646.53 619593.13 N 70.35848066 W 149.02862850 SV1 3959.56 47.35 350.01 3180.00 3244.50 1539.28 1539.50 617.89 0.00 O.OOG 0.00 0.00 5982008.98 619523.33 N 70.35947385 W 149.02914836 UG4 4468.81 47.35 350.01 3525.00 3589.50 1908.20 1908.39 552.91 0.00 O.OOG 0.00 0.00 5982376.76 619452.50 N 70.36048164 W 149.02967591 UG4A 4549.99 47.35 350.01 3580.00 3644.50 1967.01 1967.20 542.55 0.00 O.OOG 0.00 0.00 5982435.40 619441.21 N 70.36064230 W 149.02976002 UG3 5007.57 47.35 350.01 3890.00 3954.50 2298.50 2298.67 484.16 0.00 O.OOG 0.00 0.00 5982765.87 619377.57 N 70.36154785 W 149.03023411 UG1 5834.17 47.35 350.01 4450.00 4514.50 2897.32 2897.45 378.67 0.00 O.OOG 0.00 0.00 5983362.85 619262.60 N 70.36318368 W 149.03109064 Ma 6247.47 47.35 350.01 4730.00 4794.50 3196.73 3196.84 325.93 0.00 O.OOG 0.00 0.00 5983661.34 619205.12 N 70.36400160 W 149.03151895 Na 6572.21 47.35 350.01 4950.00 5014.50 3431.98 3432.08 284.49 0.00 O.OOG 0.00 0.00 5983895.86 619159.95 N 70.36464424 W 149.03185551 OA 6741.95 47.35 350.01 5065.00 5129.50 3554.95 3555.04 262.83 0.00 O.OOG 0.00 0.00 5984018.46 619136.34 N 70.36498017 W 149.03203144 OBd 6985.51 47.35 350.01 5230.00 5294.50 3731.39 3731.47 231.75 0.00 O.OOG 0.00 0.00 5984194.35 619102.47 N 70.36546215 W 149.03228388 OBf Base 7162.63 47.35 350.01 5350.00 5414.50 3859.70 3859.78 209.15 0.00 O.OOG 0.00 0.00 5984322.28 619077.83 N 70.36581269 W 149.03246748 CM2 7694.02 47.35 350.01 5710.00 5774.50 4244.66 4244.71 141.34 0.00 O.OOG 0.00 0.00 5984706.05 619003.93 N 70.36686428 W 149.0330 32 Crv 4/100 8569.35 47.35 350.01 6303.02 6367.52 4878.78 4878.79 29.63 0.00 28.10G 0.00 0.00 5985338.23 618882.18 N 70.36859655 W 149.031 8600.00 48.44 350.78 6323.56 6388.06 4901.20 4901.21 25.84 4.00 27.58G 3.54 2.52 5985360.58 618878.04 N 70.36865779 W 149.03 3 8700.00 52.01 353.13 6387.54 6452.04 4977.29 4977.29 15.13 4.00 26.08G 3.57 2.35 5985436.48 618866.12 N 70.36886563 W 149.03404366 CM1 8753.91 53.95 354.30 6420.00 6484.50 5020.07 5020.07 10.43 4.00 25.37G 3.60 2.17 5985479.17 618860.73 N 70.36898251 W 149.03408189 Fault 1 8779.69 54.88 354.84 6435.00 6499.50 5040.94 5040.94 8.44 4.00 25.06G 3.62 2.10 5985500.01 618858.42 N 70.36903952 W 149.03409800 8800.00 55.62 355.26 6446.58 6511.08 5057.57 5057.57 7.00 4.00 24.82G 3.63 2.05 5985516.61 618856.72 N 70.36908495 W 149.03410969 8900.00 59.27 357.21 6500.39 6564.89 5141.65 5141.65 1.50 4.00 23.77G 3.65 1.95 5985600.59 618849.88 N 70.36931466 W 149.03415441 9000.00 62.94 359.02 6548.71 6613.21 5229.14 5229.14 -1.35 4.00 22.90G 3.67 1.81 5985688.01 618845.64 N 70.36955365 W 149.03417759 End Crv 9055.85 65.00 359.98 6573.21 6637.71 5279.31 5279.31 -1.79 4.00 O.OOG 3.69 1.72 5985738.17 618844.41 N 70.36969073 W 149.03418111 THRZ 9142.89 65.00 359.98 6610.00 6674.50 5358.20 5358.20 -1.81 0.00 O.OOG 0.00 0.00 5985817.04 618843.13 N 70.36990624 W 149.03418133 S-121PB1 Tgt 1 9355.85 65.00 359.98 6700.00 6764.50 5551.21 5551.21 -1.88 0.00 O.OOG 0.00 0.00 5986010.00 618840.00 N 70.37043352 W 149.03418188 TKLB 9367.68 65.00 359.98 6705.00 6769.50 5561.93 5561.93 -1.88 0.00 O.OOG 0.00 0.00 5986020.72 618839.83 N 70.37046281 W 149.03418191 TKC4 9379.51 65.00 359.98 6710.00 6774.50 5572.65 5572.65 -1.89 0.00 O.OOG 0.00 0.00 5986031.44 618839.65 N 70.37049210 W 149.03418194 WeIlDesign Ver SP 1.0 Bld( doc40x_56) S-121\Plan S-121\Plan S-121P61\S-121PB1 (P2) Generated 1/5/2006 10:27 AM Page 2 of 3 Comments Measured inclination Azimuth Sub-Sea TVD TVD Vertical NS EW DLS Tool Face Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft d de ft ft ft ft ft de 1100 ft de de 1100 ft de 1700 ft ftUS ftUS IFll.7 tf `JOOJ.40 O~.VV JJ`J.`Ji3 bbJV.UU bt!'J4.bU btlLy.`JY bbL`J.yY -1.`Jtf V.UV U.UU(i V.UV V.VU 5`JCbLtSb./J b72ftlJ~.4i3 IV /V.J/77`J~7J W 74`J.VJ47bL00 9846.84 65.00 359.98 6907.50 6972.00 5996.19 5996.19 -2.04 0.00 O.OOG 0.00 0.00 5986454.89 618832.78 N 70.37164917 W 149.03418313 9900.08 65.00 359.98 6930.00 6994.50 6044.44 6044.44 -2.05 0.00 O.OOG 0.00 0.00 5986503.13 618832.00 N 70.37178099 W 149.03418327 LCU/Kup B 9900.10 65.00 359.98 6930.01 6994.51 6044.46 6044.46 -2.05 0.00 O.OOG 0.00 0.00 5986503.15 618832.00 N 70.37178105 W 149.03418327 9999.46 65.00 359.98 6972.00 7036.50 6134.51 6134.51 -2.08 0.00 O.OOG 0.00 0.00 5986593.18 618830.54 N 70.37202705 W 149.03418352 TD / 7" Csg Pt 10000.08 65.00 359.98 6972.26 7036.76 6135.07 6135.07 -2.08 0.00 O.OOG 0.00 0.00 5986593.74 618830.53 N 70.37202858 W 149.03418353 i WeIlDesign Ver SP 1.0 Bld( doc40x_56) S-121 \Plan S-121\Plan S-121 P61\S-121 P61 (P2) Generated 1/5/200610:27 AM Page 3 of 3 by • Schlumberger WELL FIELD STRUCTURE S-121P61 (P2) Prudhoe Bay Unit - WOA S-PAD Afa9nelic Paramelera Surtace LOwlwn NADZ]NaSYa Slate Pbnea. Zone Oa US Fea Miscellarreous M1iw1e1 BGGM 2005 Op 60892° Dale'. May Oa. 2006 Lat. N1021 '6965 NorMeg. 5960e6000 M1US GM Conv b90962]Ofi' Sld. St2' NO ReI. Rdary Tabb lfia.507above MSLI Mag Dec: •2a.393' FS'. 5]592.6 nT Lan. Wta923000 Easli,g. 6t 69J000'lUS Scab Fad 0.99991608]6 Plan S-'2~PB1 IP21 Srvy Dale. Jaaiary 05. 2006 0 1000 2000 3000 4000 5000 6000 0 1000 2000 3000 `o 0 0 C ~' 4000 c~ O 5000 6000 9.518" Csg Pt -.~..-..-.._.._.._.._.. _.. _.~. . 2 . _.. _.. _.._.._.._i. _..-.._.._.._.._.._.._..~.._.._.._.._..-.._..-..-..~.._..-.._..-.._.._.....-..~.._.._.._..-.._.._.._.._. i-.. _.._ ...i ..................................:................................. i..................................i..................................i.................................. c........................................... _.:r.._.._.._.._.._.._.._.._.i_.._.._.._.._.._.._.._ ~._.._.._.._.._.._.._.._..~.._.._.._.._.._.._.._.._..i.._.._.._.._.._ _..i..._.._.._.._.._.._.._.._.i_.._.._ .._.._.. _..r.._..-.._.._..-.._.._.._.t-.._.._.. _.._.._.._.._. aA .._.._.._.._.._.._..~._.._.._.._.._.._.._.._..r..~.._..~.._.._.._.._.._..~.._.._..-.._.._.._.._.._.:-.._.._ _..~.._.._.._.._.._.._.._..-.i-.._..-.._.._.. _.._.._.._i. _.._.. .. .._.._.. _.. _.. ~.._.._.._.._.._.._.._.._..i..~..-..~.._..-.._..~..-..r..-.._.._.._.._.._.._.._.i-.. _.._ ...i..r.~..,~...ww9.,..,~..,......,i...,.......,......................a~..~ ............................i,~.•.,.,•.,..•.. .....u.,.....iKl..l,,...~.,...,.,,...,....~..,..,i.......,...1...........~.....,....a...~.... _ _ ._.._.._.._.._.._.._.._ _.._.._.._.._.._.._.._.._ _.._.._.._.._.._.._.._. _ _.._.._.._.-_.._ .d _ _..-.._.._.._.._.._.._ _.._.._.._.._.._.._.._ _ ._.._ -tease _ _ ._..-.._.._.._..-..-.._ _ ._.._..-..-.._.._..-.._ ..-.._..-.._.._.._.._. _ _.._.._.._.._.._.._.._ _ _. Z _.._.._.._.._ _ ._.._.._.._.._.._.._.._ _ ._.._ crvanoo Fault 1 End Crv 5-121P61~Tgt 1 _._.._.._.._.._.._.._.._.._.s_.._.._.._.._.._.._.._.._._.._.._.._.._.._.._.._. .._.._.._.._.._.._.._ _.._.._.._.._ c~i_.._ _ ._ _.._ ._.._ ._.._ t 7000 - - TD l 7" Csg 5-12' 0 1000 2000 3000 4000 5000 6000 7000 0 1000 2000 3000 4000 5000 6000 Vertical Section (ft) Azim = 359.98°, Scale = 1(in):1000(ft) Origin = 0 N/-S, 0 lJ-V • ~p ~ • Schlumberger WELL FIELD STRUCTURE S-121PB1 (P2) Prudhoe Bay Unit - WOA S-PAD Ma9~reM Paramelars Surface Loralion NAD2] Alaska Slale Planes. bre M. US Feel Miar»Yaneous Model SGGA12005 pq 00092' Dale Alay Ca. 2006 LaL. NI02118965 No~Mng: 5980x60 o011U5 GM COnv: M.90982)Ofi' Sld S-t 21 ND ReI Rdary Tffiblfia 509 aEOVe MSLI ' Mag Dec: •2<.J93' FS "a]5930ni Wta92]000 Easlry. 8109J0009U5 Scala Fah'. 0.9999t0W]e Plan: S-12tP811P2) Svy Dale January 05. 2008 -1600 -800 0 800 1600 6400 5600 4800 4000 n n n Z 0 O c 3200 m m U V V ~ 2400 1600 800 0 -1600 -800 0 800 c« W Scale = 1(in):800(ft) E »> 1600 6400 5600 4800 4000 3200 2400 1600 800 0 • BP i Anticollision Report Company: BP Amoco Date: 1/5/2006 Time: 10:42:55 Page: 1 Field: Prudhoe Bay Reference Site: PB S Pad Co-ordinate(NE) Refe rence: Well: Pla n S-121, Tru e North Reference Well: Plan S-121 Vertical (fVD) Reference: Plan S-121 64.5 Reference H'ellpath: Plan S-121 PB1 Db: Oracle NO GLOBAL SCAN: Using user defined selection & scan criteria Reference: Princi pal Plan & PLANNED PROGRAM Interpolation Method: MD + Stations Interval: 20.00 ft Error Model: ISCWSA Ellipse Depth Range: 28.50 to 10000.08 ft Scan Method: Trav Cylinder North Maximum Radius:10000.00 ft Error Surface: Ellipse + Casing ~! Survey Program for DeSniHve Wellpath i, Date: 12/9/2005 Validated: No Version: 1 Planned From To Survey Toolcode Tool Name ft ft I'~--._.__ _---- _ 28.50 1000.00 ._. ---- _ --_ Planned: Pl - an #2 V1 - GYD-GC-SS ----- ..___. Gyrodata gyro si __-- ngle shots 1000.00 2400.00 Planned: Pl an #2 V1 MWD MWD - Standard IL 1000.00 10000.08 Planned: Pl an #2 V1 MWD+IFR+MS MWD +IFR + Multi Station Casing Points b1D 7'Vll Diameter Holc Size Name ft ft in in 3376.52 2849.50 9 625 12.250 9 5/8" 10000.08 7036.76 7.000 8.750 7" Summary <--~-------- O ffset Wellpath - ---------> Reference Offset Ctr-C.tr No-Co Allowable Site Well Wellpath MD MD Distance .Area Deviation Warning ft _ ft ft ft ft l PB S Pad _ _ Plan S-203 _ Plan S-203 (East) V3 P _ 595.86 620.00 1089.32 12.35 1076.96 Pass: Major Risk PB S Pad Plan S-203 Plan S-203 (West) V5 P 897.83 960.00 1091.43 16.12 1075.31 Pass: Major Risk ', PB S Pad Plan S-208 Plan S-208 VO Plan: S- 1976.17 1840.00 1127.89 49.25 1078.64 Pass: Major Risk PB S Pad Plan S-214 Plan S-214 V1 Plan: S- 557.85 560.00 73.87 9.31 64.56 Pass: Major-Risk ~, PB S Pad Plan S-400 Plan S-400 V3 Plan: PI 419.47 420.00 135.84 8.07 127.77 Pass: Major Risk PB S Pad Plan S-401 Plan S-401 V2 Plan: PI 418.51 420.00 91.46 8.16 8329 Pass: Major Risk ~~ PB S Pad S-01A S-01A V1 376.54 380.00 611.70 9.89 601.81 Pass: Major Risk PB S Pad S-01 B S-01 B V1 372.74 380.00 611.66 9.81 601.85 Pass: Major Risk ~ PB S Pad S-01 S-01 V1 586.03 600.00 609.14 14.15 595.00 Pass: Major Risk ~ PB S Pad S-02AP81 S-02APB1 V1 891.02 900.00 619.49 16.47 603.02 Pass: Major Risk PB S Pad S-02A S-02A V1 891.02 900.00 619.49 16.47 603.02 Pass: Major Risk PB S Pad S-02 S-02 V1 889.86 900.00 619.47 16.45 603.02 Pass: Major Risk PB S Pad S-03 S-03 V1 1112.40 1100.00 628.45 20.31 608.14 Pass: Major Risk PB S Pad S-04 S-04 V1 1260.94 1240.00 624.51 2529 599.22 Pass: Major Risk PB S Pad S-05APB1 S-05APB1 V1 1340.12 1300.00 662.14 26.84 635.31 Pass: Major Risk PB S Pad S-OSA S-05A V1 1340.12 1300.00 662.14 26.84 635.31 Pass: Major Risk PB S Pad S-05 S-05 V1 1336.20 1300.00 662.04 26.71 635.33 Pass: Major Risk PB S Pad S-06 S-06 V1 1410.95 1360.00 696.91 28.58 668.33 Pass: Major Risk PB S Pad S-07A S-07A V1 1451.70 1360.00 721.21 28.53 692.68 Pass: Major Risk PB S Pad S-07 S-07 V1 1451.70 1360.00 721.21 28.53 692.68 Pass: Major Risk PB S Pad S-08 S-08 V1 1568.02 1500.03 784.12 33.83 750.28 Pass: Major Risk PB S Pad S-08 S-08A V2 1568.02 1500.03 784.12 33.83 750.28 I Pass: Major Risk PB S Pad S-08 S-086 V3 1568.02 1500.03 784.12 33.83 750.28 Pass: Major Risk PB S Pad S-09 S-09 V1 1637.49 1560.00 845.30 36.30 809.00 Pass: Major Risk PB S Pad S-100 S-100 V10 360.11 360.00 182.01 6.36 175.65 Pass: Major Risk i PB S Pad S-101 S-101 V3 636.66 640.00 151.41 12.68 138.73 Pass: Major Risk PB S Pad S-101 S-101 PB1 V9 636.66 640.00 151.41 12.73 138.68 Pass: Major Risk i, PB S Pad S-102 S-102 V11 240.29 240.00 196.73 4.64 192.10 Pass: Major Risk PB S Pad S-102 S-102L1 V5 240.29 240.00 196.73 4.64 192.10 Pass: Major Risk II PB S Pad S-102 S-102L1 P61 V7 240.29 240.00 196.73 4.59 192.14 Pass: Major Risk PB S Pad S-102 S-102PB1 V14 240.29 240.00 196.73 4.64 192.10 Pass: Major Risk PB S Pad S-103 S-103 V6 702.35 700.00 315.64 11.30 304.34 Pass: Major Risk PB S Pad S-104 S-104 V1 360.64 360.00 390.84 7.00 383.84 Pass: Major Risk i PB S Pad S-105 S-105 V5 800.54 800.00 379.57 13.82 365.74 Pass: Major Risk ; PB S Pad S-106 S-106 V2 274.31 280.00 346.49 6.12 340.37 Pass: Major Risk PB S Pad S-106 S-106PB1 V12 274.31 280.00 346.49 6.12 340.37 Pass: Major Risk PB S Pad S-107 S-107 V36 455.81 460.00 301.81 9.33 292.48 Pass: Major Risk PB S Pad S-108 S-108 V6 779.87 780.00 254.14 12.78 241.36 Pass: Major Risk ~ PB S Pad S-109 S-109 V8 1803.56 1780.00 175.02 34.56 140.46 Pass:.Major Risk PB S Pad S-109 S-109PB1 V2 1803.56 1780.00 175.02 34.56 140.46 Pass: Major Risk PB S Pad S-10APB1 S-10APB1 V1 1700.00 1620.00 898.20 38.27 859.93 Pass: Major Risk PB S Pad S-10A S-10A V1 1700.00 1620.00 898.22 38.31 859.92 Pass: Major Risk • BP • Anticollision Report Company: BP Amoco Date: 1/5/2006 'time: 10:42:55 l age: 2 Tie1d: Prudhoe Bay Reference Sitr. PB S Pad Co-ordinate(NE) Reference: Well: Plan S-121, Tru e North Reference Well: Plan S-121 Vertical (TVD) Reference: Plan S-1 21 64.5 Reference Wellpath: Plan S-121 P81 Dh: Orade Summary ~ <----_-__ -- Offset Wellpath --- ----> Reference Offset Ctr-Ctr Vo-Go Allowable i Site Well Wellpath MD MD Distance Area Deviation Warning ~ ft ft ft ft ft i PB S Pad S-10 S-10 V1 1700.00 1620.00 898.20 38.27 859.93 Pass: Major Risk I PB S Pad S-110 S-110 V18 2326.97 2240.00 99.84 55.79 44.06 Pass: Major Risk I PB S Pad S-111 S-111 V10 280.08 280.00 272.91 5.23 267.69 Pass: Major Risk !, PB S Pad S-111 S-111 PB1 V5 280.08 280.00 272.91 5.23 267.69 Pass: Major Risk ii PB S Pad S-111 S-111 P62 V2 280.08 280.00 272.91 5.23 267.69 Pass: Major Risk ~ PB S Pad S-112 S-112 V20 933.47 940.00 76.38 17.91 58.48 Pass: Major Risk ~, PB S Pad S-113 S-113 V14 651,52 660.00 289.91 12.84 277.07 Pass: Major Risk PB S Pad S-113 S-113A V3 651.52 660.00 289.91 12.68 277.22 Pass: Major Risk PB S Pad S-113 S-1136 V6 651.52 660.00 289.91 12.68 277.22 Pass: Major Risk '~ PB S Pad S-114 S-114 V13 535.22 540.00 363.90 10.99 352.91 Pass: Major Risk PB S Pad S-114 S-114A V6 535.22 540.00 363.90 10.83 353.07 Pass: Major Risk '~, PB S Pad S-115 S-115 ST V1 Plan: Plan 679.50 680.00 139.15 11.66 127.49 Pass: Major Risk ', PB S Pad S-115 S-115 V7 679.50 680.00 139.15 11.57 127.59 Pass: Major Risk PB S Pad S-116 S-116 V6 439.85 440.00 15.26 7.57 7.69 Pass: Major Risk PB S Pad S-117 S-117 V4 638.95 640.00 118.71 11.57 107.14 Pass: Major Risk PB S Pad S-118 S-118 V5 739.56 740.00 27.01 12.84 14.17 Pass: Major Risk ', PB S Pad S-119 S-119 V7 382.89 380.00 241.99 7.24 234.75 Pass: Major Risk PB S Pad S-11 S-11 V4 1749.28 1660.00 970.27 37.37 932.89 Pass: Major Risk PB S Pad S-11 S-11A V1 1749.77 1660.00 970.28 37.39 932.89 Pass: Major Risk PB S Pad S-11 S-11 B V1 1750.03 1660.00 970.29 37.39 932.89 Pass: Major Risk PB S Pad S-120 S-120 V4 519.38 520.00 103.93 9.79 94.14 Pass: Major Risk PB S Pad S-122 S-122 V9 797.52 800.00 118.27 13.64 104.63 Pass: Major Risk PB S Pad S-122 S-122PB1 V4 797.52 800.00 118.27 13.64 104.63 Pass: Major Risk PB S Pad S-122 S-122P62 V2 797.52 800.00 118.27 13.64 104.63 Pass: Major Risk ', PB S Pad S-122 S-122PB3 V2 797.52 800.00 118.27 13.64 104.63 Pass: Major Risk ', PB S Pad S-123 S-123 V10 1385.61 1280.00 729.49 26.89 702.59 Pass: Major Risk PB S Pad S-12A S-12A V1 1800.00 1680.00 1040.90 41.79 999.10 Pass: Major Risk I, PB S Pad S-12 S-12 V1 1814.77 1720.00 1059.36 45.44 1013.91 Pass: Major Risk I~ PB S Pad S-13 S-13 V1 1853.93 1740.00 1128.39 43.41 1084.98 Pass: Major Risk PB S Pad S-14 S-14 V5 1918.37 1820.00 1200.22 71.83 1128.39 Pass: Major Risk PB S Pad S-14 S-14A V3 1918.37 1820.00 1200.22 71.83 1128.39 Pass: Major Risk ', ', PB S Pad S-15 S-15 V2 429.34 440.00 964.30 10.35 953.95 Pass: Major Risk ~ PB S Pad S-16 S-16 V1 393.60 400.02 1071.31 7.41 1063.90 Pass: Major Risk I PB S Pad ~ S-17 S-17 V1 483.70 499.98 1184.52 10.62 1173.89 Pass: Major Risk '; PB 5 Pad S-17 S-17A V1 483.70 499.98 1184.52 10.62 1173.89 Pass: Major Risk PB S Pad S-17 S-17AL1 V1 483.70 499.98 1184.52 10.62 1173.89 Pass: Major Risk II PB S Pad S-17 S-17AP61 V1 483.70 499.98 1184.52 10.62 1173.89 Pass: Major Risk l PB S Pad S-17 S-176 V1 483.70 499.98 1184.52 10.62 1173.89 i Pass: Major Risk PB S Pad S-17 S-17C V1 483.70 499.98 1184.52 10.47 1174.05 Pass: Major Risk i PB S Pad S-17 S-17CP61 V2 483.70 499.98 1184.52 10.47 1174.05 Pass: Major Risk ', PB S Pad S-17 S-17CPB2 V1 483.70 499.98 1184.52 10.47 1174.05 Pass: Major Risk ~ PB S Pad S-18 S-18 V1 529.63 560.00 1294.58 10.03 1284.55 Pass: Major Risk ~ PB S Pad S-18 S-18A V16 532.30 560.00 1294.66 10.00 1284.66 Pass: Major Risk i PB S Pad ~ S-19 S-19 V1 784.23 800.01 608.50 15.45 593.06 Pass: Major Risk I PB S Pad S-200 S-200 V1 497.99 500.00 44.47 8.03 36.45 Pass: Major Risk I, ~~ PB S Pad S-200 S-200PB1 V10 497.99 500.00 44.47 8.03 36.45 Pass: Major Risk ~ PB S Pad S-201 S-201 V2 280.08 280.00 330.80 5.06 325.75 Pass: Major Risk II PB S Pad S-201 S-201 PB1 V11 280.08 280.00 330.80 5.06 325.75 Pass: Major Risk i PB S Pad S-20 S-20 V4 951.99 960.00 618.72 17.72 601.00 Pass: Major Risk PB S Pad S-20 S-20A V2 951.99 960.00 618.72 17.72 601.00 Pass: Major Risk PB S Pad S-213 S-213 V9 617.70 620.00 88.39 9.61 78.78 Pass: Major Risk PB S Pad S-213 S-213A V22 602.07 600.00 88.15 9.38 78.78 Pass: Major Risk PB S Pad S-213 S-213AL1 V9 602.07 600.00 88.15 9.38 78.78 Pass: Major Risk ', PB S Pad S-213 S-213AL1-01 V7 602.07 600.00 88.15 9.38 78.78 Pass: Major Risk PB S Pad S-213 S-213AL2 V5 602.07 600.00 88.15 9.38 78.78 Pass: Major Risk I, i PB S Pad S-213 S-213AL3 V7 602.07 600.00 88.15 9.38 78.78 Pass: Major Risk I PB S Pad S-215 S-215 V9 647.34 680.00 986.81 11.93 974.88 I Pass: Major Risk PB S Pad S-216 S-216 V2 458.58 460.00 59.94 9.35 50.59 Pass: Major Risk !, PB S Pad S-21 S-21 V1 1146.56 1120.00 630.17 20.81 609.36 Pass: Major Risk j PB S Pad S-22A S-22A V1 612.05 620.00 607.66. 10.59 597.06 Pass: Major Risk PB S Pad S-226 S-226 V2 612.05 620.00 607.66 10.75 596.91 Pass: Major Risk PB S Pad S-22 S-22 V1 612.05 620.00 607.66 10.61 597.05 Pass: Major Risk ~ PB S Pad S-23 S-23 V1 1011.09 1000.00 622.14 17.22 604.92 Pass: Major Risk 1 H i i BP Anticollision Report Company: BP Amoco ['field: Prudhoe Bay Reference Sitr. PB S Pad Reference Well: Plan S-121 Reference Wellpath: Plan S-121 P81 Summart <---------- O ffset Wellpath ---> ~ Site Well Wellpath II PB S Pad S-24 S-24 V5 Date: 1/5/2006 Time: 10:42:55 Page: 3 Co-ordinate(NE) Reference: Well: Plan S-121, True North Vertical (TVD) Reference: Plan S-121 64.5 Db: Oracle Reference Offset Ctr-Ctr 'Vo-Go Allowable MD MD Distance Area Deviation ft ft ft ft ft 1241.19 1220.00 632.11 21.94 610.16 1242.75 1220.00 632.18 22.01 610..17 1242.75 1220.00 632.18 22.01 610.17 1364.00 1360.00 600.71 31.81 568.89 1291.86 1260.00 641.31 23.96 617.35 1291.86 1260.00 641.31 23.96 617.35 1317.14 1280.00 648.10 23.63 624.47 1367.08 1320.00 666.70 26.90 639.80 1367.08 1320.00 666.70 26.74 639.96 1366.57 1320.00 666.69 26.62 640.07 1400.00 1340.00 677.41 27.11 650.30 1400.00 1340.00 677.41 27.11 650.30 1400.00 1340.00 677.41 27.11 650.30 1400.00 1340.00 677.41 27.11 650.30 1590.09 1520.00 796.11 31.90 764.21 1600.00 1520.00 796.29 32.09 764.19 1590.09 1520.00 796.11 31.90 764.21 - 1600.00 1520.00 796.29 32.19 764.10 1590.09 1520.00 796.11 31.90 764.21 1465.98 1400.00 715.03 30.97 684.05 1509.80 1440.00 742.27 29.71 712.55 1509.80 1440.00 742.27 29.71 712.55 1686..81 1600.00 880.30 37.31 842.99 1521.08 1440.00 773.32 30.60 742.72 1700.00 1580.00 952.47 34.33 918.14 1912.16 1960.00 931.71 41.41 890.30 1877.33 1820.00 975.73 42.74 932.99 1900.00 1800.00 988.38 43.44 944.94 1656.86 1580.00 853.75 32.79 820.97 447.60 460.00 1216.62 7.26 1209.36 447.60 460.00 1216.62 7.26 1209.36 667.57 680.00 106.52 11.16 95.36 667.57 680.00 106.52 11.16 95.36 667.57 680.00 106.52 11.16 95.36 450.05 460.00 76.72 7.96 68.76 450.05 460.00 76.72 7.96 68.76 495.45 500.00 42.75 8.54 34.21 495.45 500.00 42.75 8.54 34.21 458.05 460.00 14.72 7.37 7.35 458.05 460.00 14.72 7.37 7.35 458.05 460.00 14.72 7.37 7.35 i~ PB S Pad S-24 S-24A V1 PB S Pad S-24 S-24B V2 ~I PB S Pad S-25APB1 S-25APB1 V2 '; PB S Pad S-25A S-25A V1 ' PB S Pad S-25 S-25 V1 PB S Pad S-26 S-26 V1 PB S Pad S-27 S-27 V1 PB S Pad S-27 S-27A V3 PB S Pad S-27 S-276 V7 PB S Pad S-28 S-28 V4 'I PB S Pad S-28 S-28A V1 PB S Pad S-28 S-286 V2 PB S Pad S-28 S-28BPB1 V7 PB S Pad S-29AL1 S-29AL1 V1 PB S Pad S-29A Plan S-29AL2 VO Plan: PB S Pad S-29A S-29A V1 ', PB S Pad S-29 Ptan S-29B V1 Plan: S I PB S Pad S-29 S-29 V1 PB S Pad S-30 S-30 V1 PB S Pad S-31A S-31AV3 PB S Pad S-31 S-31 V1 PB S Pad S-32 S-32 V1 PB S Pad S-33 S-33 V1 PB S Pad S-34 S-34 V1 PB S Pad S-35 S-35 V1 PB S Pad S-36 S-36 V1 PB S Pad S-37 S-37 V1 PB S Pad S-38 S-38 V1 PB S Pad S-40A S-40A V1 PB S Pad S-40 S-40 V1 PB S Pad S-41L1 S-41L1 V1 PB S Pad S-41 P81 S-41 P61 V1 ~I PB S Pad S-41 S-41 V1 PB S Pad S-42PB1 S-42PB1 V1 PB S Pad S-42 S-42 V2 ~i PB S Pad S-43L1 S-43L1 V2 ', PB S Pad S-43 S-43 V3 ~~ PB S Pad i S-44L1 PB1 S-44L1 PB1 V3 i PB S Pad S-44L1 S-44L1 VS PB S Pad S-44 S-44 V10 Warning / Pass: Major Risk I Pass: Major Risk ~, Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk I Pass: Major Risk I Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk ~ Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk ~ ~ ~i Field: Prudhoe Bay ~ Site: PB S Pad Well: Plan 5-121 ', Wellpath: Plan 5-121PB1 ~i n loo 0 loo Travelling Cylinder Azimuth (TFO+AZI) [deg] vs Centre to Centre Sepemtion [100Nin] v Site: PB S Pad Drilling Target Conf.: 95% Description: Map Northing: 5986010.00 R Map Fasting : 618840.00 ft Latitude: 70°22' 13.561 N Target: S-121PB1 Tgt Well: Plan S-121 Based on: Planned Program Vertical Depth: 6700.00 ft below Mean Sea Level Local +N/-S: 5551.20 ft Local +E/-W: -1.88 ft Longitude: 149°02'03.05 5 W Shape: Circle Radius: 200 ft J __ 6000 ~, 5800 5800 ~~ ,. 500 '~, ~`~,, ~~ 5600 ', ,, ~- ~ 500 ,, .~ ~, ~~. ~ , .- 500 5800 ~~ __ 5200 01 o 0 0 0 0 0 0 , 0 0 0 0 0 0 0 0 , Q ~ ~I i i D o „ • • TERRIE L RUBBLE ss-s~tz5z 263 BP EXPLORATION AK tNC ~~Mastercard Check" PO BOX 196612. MB 7-5 2 ANCHORAGE, AK 99519-6612 J-~>C~~j DATE y~ ORD R OF E ~ $ IC~•a~ bOLLARS First Nation I ank Alaska AnchoraCgel, AK 99.501 ~/////~ 1///~r,',' MEMO ~:L25200060~:99L4~~~6227~~~LS5611' 0263 - ~ • TRANSMITTAL LETTER CHECKLIST WELL NAME ~/~~ ~~~Z. l PTD# 2-GY^~ ~ ~ l Development Service Exploratory Stratigraphic Test Non-Conventional Well Circle Appropriate Letter /Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS TEXT FOR APPROVAL LETTER WHAT (OPTIONS) APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (If last two digits in permit No. API No. 50- - - API number are , between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - -) from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce /inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Please note the following special condition of this permit: Non-Conventional production or production testing of coal bed methane is not allowed Well for (name of welly until after (Company NameZhas designed and implemented a water well testing program to provide baseline data on water quality and quantity. (,Company NameZmust contact the Commission to obtain advance approval of such water well testing ro ram. Rev: 1/25/06 C:Ajody\transmittal_checklist r ~WELL PERMIT CHECKLIST COMPANY BPX WELL NAME PROGRAM Ex lorato EXP _ Develo ment DEV) x Redrill Service SER _ Well bore se p ry( ) p ( _ ( ) g_Annulardisposalparareq No FIELD & POOL PBU Aurora Oil Pool Initial ClasslType / 1-OIL GEOL AREA 820 UNIT No. PBU ON/OFF SHORE On ADMINISTRATION 1. Permit fee attached ........................................................................ ........................ y 2. Lease number appropriaie ............................................................... ........................ y 3. Unique well name and number ......................................................... ........................ y 4. Well located in a tleflned pool ........................................................... ........................ y 5. Well located proper distance from drilling unit boundary ......................... ........................ y 6. Well located proper tlislance from other wells ...................................... ......................... y APPR DATE 7. Sufficient acreage available in drilling unit ........................................... ......................... y RPC 3130!2006 8. If deviated, is wellbore plat included ................................................... ........................ y 9. Operator only affected party ............................................................. ........................ y 10. Operator has appropriate bond in force ............................................. ........................ y 11. Permit can be issued without conservation order ................................. ........................ y 12. Permit can be issued without administrative approval ........................... ........................ y 13. Can permit be approved before 15-day wait ....................................... ........................ y (For Service Well Only) 14. Well located within area and strata authorized by Injection Order # Na (For Service Well Only) 15. All wells within i14 mile area of review identified .................................. ........................ nla (For Service Well Only) 16. Pre-produced injector: duration ofpre-production less than 3 months ..... ......................... Na 17. ACMP Finding of Consistency has been issued for this project ............... ........................ nla ENGINEERING 18. Conductor string pravided .............................................................. ......................... y 20" 110'. 19. Surface casing protects all known USDWs ........................................ ......................... y 20. CMT vol adequate to ~rculaie on conductor & surf csg ......................... ........................ y Ade vote excess. 21. CMT vol adequate to tie-in long siring to surf ag ................................ ......................... n 22. CMT will cover all known productive horizons ..................................... ........................ y 23. Casing designs adequate for C, T, B & permafrost .............................. ......................... y 24. Adequate tankage or reserve pit ...................................................... ........................ y Nabors 9ES. 25. If a retlrill, has a 10-403 for abandonment been approved .................... ........................ nla . New well. 26. Adequate wellbore separation proposed ............................................ ........................ y 27. If diverter required, does it meet regulations ....................................... ........................ y 28. Drilling fluid program schematic & equip list adequate .......................... ........................ y Max MW 10.4 APPR DATE 29. BOPEs, do they meet regulation ...................................................... ........................ y WGA 4!312006 30. BOPE press rating appropriate; test to ........................3500 psig ... ........................ y MSP 2839 si. 31. Choke manifold complies wlAPl RP-53 (May 84) ................................ ........................ y 32. Work will occur without operation shutdown ....................................... ........................ y 33. Is presence of H25 gas probable ..................................................... ........................ n Not an H2S ad. (for Service Well Only) 34. Mechanical condition of wells within AOR verified ................................ ........................ nla GEOLOGY 35. Permit can be issued wlo hydrogen sulfide measures ........................... ........................ n 36. Data presented on potential overpressure zones ................................. ........................ nla APPR DATE 37. Seismic analysis of shallow gas zones .............................................. ........................ Na RPC 3!3012006 38. Seabed condition surrey (ifoff-share) ............................................... ........................ Na 39. Contact namelphone for weekty progress reports (exploratory only) .............................. Na GEOLOGY: ENGINEERING: RES. ENGINEERING: COMMISSION: CommentsAnstructions RPC: SFD: TEM: JDH: CCyT` WGA: MJW: DTS: iii; .t