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205-136
• 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. ~~~ - ~3 ~ Well History File Identifier Organizing (done) RESCAN ^ Color Items: ^ Greyscale Items: ^ Poor Quality Originals: ^ Other: o,.o,aae uiuiiiiiiiiiiuu DIGITAL DATA ~iskettes, No. ~, ^ Other, No/Type: Re,~a~~eeaee iimmiuiumi OVERSIZED (Scannable) ^ Maps: ^ Other Items Scannable by a Large Scanner OVERSIZED (Non-Scannable) ^ Logs of various kinds: NOTES: BY: Maria Date: ~ ^ Other:: /s/ Project Proofing III II~IIIIIIII II III BY: Maria Date: /s/ Scanning Preparation ~ x 30 = ~~ + ~ =TOTAL PAGES~~ BY: Ma i _ D t ~ (Count does not include cover sheet) / / 4 1 I - r a a e: s I Production Scanning III II Ill (I III I I III Stage 1 Page Count from Scanned File: (Count does include cover sheet) Page Count Matches Number in Scanning Preparation: 1~! YES NO BY: Maria Date: ~ /J. ~ ~ 8 /s! ~/ Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: /s/ Scanning is complete at this point unless rescanning is required. II I II ~I II III II I I III ReScanned BY: Maria Date: /s/ Comments about this file: Quality Checked III +I II'I III II'I ICI 10/6/2005 Well History File Cover Page.doc • BP Exploration (Alaska) Inc. Attn: Well Integrity Coordinator, PRB-20 Post Office Box 196612 Anchorage, Alaska 99519-6612 ~~ S ~f 46` P:';.~~~d~+~`r L:x~~.;,' j,1 ~ ~t ~.. a~` ~.~~~~~, August 14, 2009 bp ~;: ~~~~~~~ Mr. Tom Maunder Alaska Oil and Gas Conservation Commission 333 West 7th Avenue Anchorage, Alaska 99501 Subject: Corrosion Inhibitor Treatments of GPB L-Pad Dear Mr. Maunder, 0 C T 0 5 2009 ~IasYca Uii ~ Gas Cons. Gommi~gion Anchorage ~,a~-- ~~ ~ ~ ~ ~D Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB L- Pad that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, API and PTD numbers, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Anna Dube, at 659-5102. Sincerely, ~ Torin Roschinger BPXA, Well Integrity Coordinator ~ • BP Exploration (Alaska ) Inc. Surtace Casing by Conductor Mnulus Cement, Corrosion inhibitor, Sealant Top-off Report of Sundry Operations (10-404) Date L pad 8/13/2009 Well Name PTD # API # Initial to of cement Vol. of cement um ed Final top of cement Cement top off date Corrosion inhibitor Corrosion inhibitoN sealant date ft bbls ft na al L-01 2010720 50029230110000 NA 6 NA 61.2 6/25/2009 L-02A 2041490 50029230480100 NA 1.4 NA 14.5 6/27/2009 L-03 2051030 50029232690000 NA 2.8 NA 24.7 6/25/2009 L-04 2061200 50029233190000 NA 1.7 NA 15.3 6/25/2009 L-100 1980550 50029228580100 NA 6.2 NA 57.8 6/29/2009 L-101 1980320 50029228650000 NA 3.3 NA 30.6 6/29/2009 L•102 2020360 50029230710000 37' NA Need To Job? NA L-103 2021390 50029231010000 NA 1.6 NA 10.2 6/26/2009 L-104 2012380 50029230600000 NA 3.5 NA 47.6 5/6/2009 L-105 2020580 50029230750000 NA 1.75 NA 24.65 5/6/2009 L-106 2012230 50029230550000 NA 2.75 NA 28.05 5/6/2009 L-107 2011510 50029230360000 NA 4.8 NA 57.8 5/6/2009 L-108 2021090 50029230900000 NA 1.2 NA 13.8 6/25/2009 L-109 2012010 50029230460000 NA 2.9 NA 32.3 6/27/2009 1-110 2011230 50029230280000 NA 27 NA 3162 6/29/2009 L•111 2020300 50029230690000 NA 4.7 NA 54.4 6/29/2009 L-112 2022290 50029231290000 NA 5.5 NA 51 6/27/2009 L-114A 2051120 50029230320100 NA 2.5 NA 25.5 6/29/2009 L-115 2011400 50029230350000 NA 0.5 NA 3.4 6/27/2009 L-116 2011160 50029230250000 NA 5 NA 54.4 6/28/2009 L-117 2011670 50029230390100 NA 2.9 NA 28.9 6/27/2009 L-118 2011870 50029230430000 NA 1.4 NA 75.3 6/27/2009 L-119 2020640 50029230770000 NA 2.25 NA 28.9 5/6/2009 L-120 2020060 50029230640000 NA 0.75 NA 6.8 5/S/2009 L-121A 2030390 50029231380100 NA 22 NA 25.5 6/27/2009 L-122 2030510 50029231470000 NA 2 NA 20.4 6/27/2009 L-123 2051940 50029232900000 NA 2 NA 18.7 6/27/2009 L-124 2050430 50029232550000 NA 1.8 NA 17 6/27/2009 L-200 2040010 50029231910000 NA 1.8 NA 13.5 6/26/2009 L-201 2040460 50029232020000 NA 1.75 NA 15.3 5/6/2009 L-202 2041960 50029232290000 NA 2 NA 17 6/26/2009 L-204 2060920 50029233140000 NA 1.5 NA 5.95 5/6/2009 L-205 2080530 50029233880000 NA 1 NA 12.75 1H0/2009 L-210 2031990 50029231870000 NA 3.25 NA 31.4 5/5/2009 L-211 2040290 50029231970000 NA 1.8 NA 17 6/27/2009 L-212 2050300 50029232520000 NA 1.8 NA 17 6/26/2009 L-213 2060530 50029233080000 NA 2 NA 17 6l25/2009 L-214A 2060270 50029232580100 NA 0.25 NA 10.2 5/6/2009 L-215 2051270 50029232740000 NA 1.5 NA 30.6 5/6/2009 L-216 2040650 50029232060000 NA 1.3 NA 11.9 6/26/2009 L-217 2060750 50029233120000 late bbckin conductor NA NA L-218 2051190 50029232720000 NA 1.7 NA 15.3 6/27/2009 L-219 2071480 50029233760000 surtace NA NA L-220 2080470 50029233870000 NA 2 NA 20.4 6/28/2009 L-221 2080310 50029233850000 NA 1.7 NA 162 6/25/2009 L-250 2051520 500292328t0000 NA 3.4 NA 34 6/26/2009 1-50 2051360 50029232770000 NA 1.8 NA 20.4 6/27/2009 L-51 2060590 50029233090000 NA 1.8 NA 17 6/27/2009 • • v~ 3 Vie,. a1 u ~ 7 DATA SUBMITTAL COMPLIANCE REPORT 11 /23/2007 Permit to Drill 2051360 Well Name/No. PRUDHOE BAY UN PBU L-50 Operator BP EXPLORATION (ALASKA) INC MD 12814 TVD 8695 Completion Date 10/23/2005 Completion Status 1-OIL Current Status 1-OIL REQUIRED INFORMATION Samples IVo DATA INFORMATION Types Electric or Other Logs Run: MWD / GR, MWD / GR / PWD /RES, MWD / GR /RES /DEN / NEU Well Log Information: Log/ Electr Data Digital Dataset Log Log Run led/Frmt Number Name Scale Media No API No. 50-029-23277-00-00 UIC N Directional (data taken from Logs Portion of Master Well Data Maint Interval OH / Start Stop CH Received Comments Asc Directional Survey Directional Survey Asc Directional Survey Directional Survey Induction/Resistivity Mud Log No Induction/Resistivity Pds 13865 Induction/Resistivity l~r§ 13919 See Notes ED C Pds 13919 See Notes 0 12814 Open 10/31/2005 Final 0 12814 Open 10/31/2005 Final 0 12628 Open 10/31/2005 PB 1 Final 0 12628 Open 10/31/2005 PB 1 Final 2 Blu 3 108 12814 5/8/2006 TVD Log Composite Recoded Mode FIELD Print 29-Sep-2005 2 Blu 3 108 12814 5/8/2006 MD Log Composite Recoded Mode FIELD Print 29-Sep-2005 2 3 108 12814 5/8/2006 TVD & MD Log Composite Recoded Mode FIELD Print 29-Sep-2005 2 Blu 1 108 12628 Open 5/24/2006 Measured Depth Log/Field Print PB 16-Oct-2005 2 1 108 12628 Open 5/24/2006 Measured Depth Log/Field Print PB 16-Oct-2005 Well Cores/Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments DATA SUBMITTAL COMPLIANCE REPORT 11 /23/2007 Permit to Drill 2051360 Well Name/No. PRUDHOE BAY UN PBU L-50 Operator BP EXPLORATION (ALASKA) INC API No. 50-029-23277-00-00 MD 12814 TVD 8695 Completion Date 10/23/2005 Completion Status 1-OIL Current Status 1-OIL UIC N ADDITIONAL INFORMATION Well Cored? Y / N Daily History Received? Y / N Chips Received? Y / N Formation Tops ~N Analysis Y / N Received? Comments: Compliance Reviewed 13y: Date: i Sehlum~erger Alaska Data 8 Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth wou ~„ti e ~''~Y '~ ~ 2006 ~~~~ ~ ~... new.. ..r:.... N0.3812 Company: State of Alaska Alaska Oil 8 Gas Cons Comm Attn: Helen Warman 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay n.•. e~ 05/19/06 D-23A 10942207 MCNL (~ - 04/22/05 1 ~ ~ ,~_,, L3-08 11136738 RST ~{ - ~ 11/04/05 1 1 L3-08 11212839 RST - ~~-f'~' 03/29/06 1 1 03-14A 11212846 USIT L~;, :. ~ 04/24106 1 D.S.3-09 11212840 USIT . Lt -u~1 03/31/06 1 D.S. 15-17 11221562 SCMT i SL(- 04/10106 1 NGI-08 11225958 USIT ' ! ~SC'_ 1'Zj ~ - (~. 04/11/06 1 D.S. 01-04A N!A USIT ` (5 05/06!06 1 12-08C 11221571 USIT ~.t; ~ - 05/06/06 AGI-07 11221569 USIT -S L t 9 , _ ~~'} 05/05/06 1 E-15B 11212857 USIT _ • ~{ 05/18/06 1 L-50P61 40012467 OH LDWG EDIT OF MWD/LWD - 10/18/05 1 1 Petrotechnical Oata Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 HiasKa uata ~ conswnng services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth t ~-- sles~ds~ ~~ l Sed~mm~er~er ~ ~ ~~~...YYY NO. 3773 Alaska Data & Consulting Services ~~ Company: State of Alaska 2525 Gambeii Street, Suite a0o Alaska Oil & Gas Cons Comm Anchorage, AK 99503-2838 Attn: Helen Warman ATTN: Beth 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Well Job # Lo Descri lion Date BL Color CD 05/01/06 L-50 40012467 OH LDWG EDIT OF MWDILWD 10118/05 2 1 18-13 11225959 USIT 04113/08 1 D.S.15-49A 11211378 SCMT 04107/06 1 02-096 11258693 SCMT 04/08/08 1 P2-11A 11285926 SCMT 04120106 1 PWDW2-1 10563132 TEMPERATURE LOG 02/15/03 1 J-25 10560274 LDL 06120103 1 W-29 10672333 LDL 10/28/03 1 W-25 11072872 LDL 07114/05 1 R-O6A 10572081 LDL 02128/03 1 N-21A 10703973 LDL 02115104 1 PWDW2-1 10580235 LDL 03101/03 1 Alaska Data & Consulting Services Petrotechnical Data Center LR2-1 2525 Gambell Street, Suite 400 900 E. Benson Blvd. Anchorage, AK 99503-2838 Anchorage, Alaska 99508 ATTN: Beth C, • STATE OF ALASKA l ` ~Y ALASKA IL AND GAS CONSERVATION COMION WELL COMPLETION OR RECOMPLETION REPORT AND LOG Revised: 12/29/05, Put on Production 1a. Well Status: ®Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended ^ WAG 2oAACZ5.~o5 20AAC25.110 ^ GINJ ^ WINJ ^ WDSPL No. of Completions One Other ib. Well Class: ®Development ^ Exploratory ^ Stratigraphic ^ Service 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband. 10/23/2005 12. Permit to Drill Number 205-136 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 9/29/2005 13. API Number 50-029-23277-00-00 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 10/18/2005 14. Well Name and Number: PBU L-50 2350 FSL, 3830 FEL, SEC. 34, T12N, R11 E, UM Top of Productive Horizon: 1593' FSL, 2723' FEL, SEC. 34, T12N, R11 E, UM g• KB Elevation (ft): 76.3' 15. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay Pool Total Depth: 1217' FSL, 4429' FEL, SEC. 35, T12N, R11 E, UM 9. Plug Back Depth (MD+TVD) 12814 + 8695 Ft 4b. Location of Well (State Base Plane Coordinates): Surtace: x- 583087 y- 5978070 Zone- ASP4 10. Total Depth (MD+TVD) 12814 + 8C~ Ft ~ Pro ation: ,~ 028238 _ TPI: x- 584203 y- 5977326 Zone- ASP4 Total Depth: x- 587782 Y- 5976991 Zone- ASP4 11 • Depth where SSSV set None MD ! ~ ~~ Lan Permit: ~~ --- ------------ - `-~ 18. Directional Survey ®Yes ^ No 19. Water depth, if offshore N/A MSL rST~c , ermafrost 1 ~~j(Approx.) 21. Logs Run: MWD / GR, MWD / GR / PWD /RES, MWD / GR /RES /DEN / NEU 2. ASING, LINER AND EMENTING RECORD CASING ETiING EPTH MD ETTING EPTH`TVD HOLE OUNT SIZE WT. PER FT. GRADE OP OTTOM OP TTOM SIZE CEMENTING RECORD PULLED 20" 91.5# H-40 Surtace 108' Surface 108' 42" 60 sx Arctic Set A rox. 9-5/8" 40# L-80 28' 2573' 28' 2573' 12-1/4" 370 sx AS Lite, 295 sx Class 'G' 7" 26# L-80 26' 9206' 26' 8618' 8-3/4" 303 sx 'G' 182 sx 'G', 146 sx 'G' 4-1/2" 12.6# L-80 9061' 12520' 8549' 8673' 6-1/8" Uncemented Slotted Liner 23. Pertorations open to Produc tion (MD + TV D of Top and, " ' 24: TuetluG RECORD Bottom Interval, Size and Number; if none, state none ): SIZE DEPTH SET (MD) PACKER SET (MD) 4-1/2" Slotted Section 3-1/2", 9.2#, L-80 9060' 8990' MD TVD MD TVD 9219' - 12396' 8622' - 8666 `Zrj; ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL MD AMOUNT Si KIND OF MATERIAL USED Freeze Protect w/ 81 Bbls of Diesel 26. PRODUCTION TEST Date First Production: November 15, 2005 Method of Operation (Flowing, Gas Lift, etc.): Flowing Date of Test Hours Tested No Test Yet PRODUCTION FOR TEST PERIOD OIL-BBL GAS-McF WATER-BBL CHOKE $IZE 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 chips; if none, state "none". None ~~V1S1 ~~~ ,~Af~ ~ ~ 2006 Form 10-407 Revised 12/2003 CONTINUED ON REVERSE $IDE a ~. 2$ GEOLOGIC MARKERS 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 2790 2790' None Ugnu M 3939 3939' Schrader Bluff N 4185' 4183' Schrader Bluff O 4337 4333' Base Schrader Bluff /Top Colville 4663' 4653' HRZ 6274' 6239' Kalubik 6500' 6461' Kuparuk D 6627' 6586' Kuparuk C 6650' 6609' Kuparuk B 6822' 6779' Kuparuk A 6962' 6916' Miluveach 7047' 6999' Kingak 7724 7618' Sag River 9209' 8619' Kingak 12533' 8674' Sag River 12796' 8694' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys, Surface Location As-Built 31. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed t D t T h i l A i t - Titl °2 (°~' a e n ss s an e ec ca Terrie Hubble l ! lcw PBU L-50 205-136 Prepared By Namemlumber.• Terrie Hubble, 564-4628 Well Number Permit No. / A royal No. Dulling Engineer: Scott Kolstad, 564-5347 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. ITeM 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. ITeM 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). 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 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMION WELL COMPLETION OR RECOMPLETION REPORT AND LOG ~~~ V ~~ ~~~~~~ a~~ ~ Cans, Comin>`f~sion 1a. Well Status: ®Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended ^ WAG zoaaczs.~os zoaaczs.,,o ^ GINJ ^ WINJ ^ WDSPL No. of Completions One Other ib. Well Class: ®Deveiopment ^ Exploratory ^ Stratigraphic ^ Service 2. Operator Name: BP Exploration (Alaska] Inc. 5. Date Comp., Susp., or Aband. 10/23/2005 12. Permit to Drill Number 205-136 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 9/29/2005 13. API Number 50-029-23277-00-00 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 10/18/2005 14. Well Name and Number: PBU L-50 2350 FSL, 3830 FEL, SEC. 34, T12N, Ri 1 E, UM Top of Productive Horizon: 1593' FSL, 2723' FEL, SEC. 34, T12N, R11 E, UM g, KB Elevation (ft): 76.3' 15. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay Pool Total Depth: 1217' FSL, 4429' FEL, SEC. 35, T12N, R11E, UM 9. Plug Back Depth (MD+TVD) 12814 + 8695 Ft 4b. Location of Well (State Base Plane Coordinates): Surface: x- 583087 y- 5978070 Zone- ASP4 10. Total Depth (MD+TVD) 12814 + 8695 Ft 16. Property Designation: ADL 028238 TPi: x- 584203 y- 5977326 Zone- ASP4 Total Depth: x- 587782 Y- 5976991 Zone- ASP4 11 • Depth where SSSV set None MD 17. Land Use Permit: ---~--~ -------~---~-- -~----~------- f h ff Thi f P f t k 20 18. Directional Survey ®Yes ^ No ore 19. Water depth, i s o N/A MSL erma ros ness o . c 1900' (Approx.) 21. Logs Run: MWD/GR, MWD/GR/PWD/RES, MWD/GR/RES/DEN/NEU 2. ASING, LINER AND EMENTING RECORD (:ASING ETTIN(i EPTH MD'' ETTIN(i PTH TYD {-TOLE AMOUNT $12E WT. PER FT. GRADE OP_ TTOM OP TTQM SIZE CEMENTING RECORD PULLED 20" 91.5# H-40 Surface 108' Surface 108' 42" 60 sx Arctic Set A rox. 9-5/8" 40# L-80 28' 2573' 28' 2573' 12-1/4" 70 sx AS Lite, 295 sx Class 'G' 7" 26# L-80 26' 9206' 26' 8618' 8-3/4" 303 sx 'G', 182 sx 'G', 146 sx 'G' 4-1/2" 12.6# L-80 9061' 12520' 8549' 8673' 6-1/8" Uncemented Slotted Liner 23. Perforations open to Produc tion (MD + TV D of Top and " " 24, TUBING RECORD Bottom Interval, Size and Number; if none, state none ): SIZE DEPTH SET (MD) PACKER SET (MD) 4-1/2" Slotted Section 3-1/2", 9.2#, L-80 9060' 8990' MD TVD MD TVD 9219' - 12396' 8622' - 8666' 25;' ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL MD AMOUNT & KIND OF MATERIAL USED Freeze Protect w/ 81 Bbls of Diesel 26. PRODUCTION TEST Date First Production: Not on Production Yet Method of Operation (Flowing, Gas Lift, etc.): N/A Date of Test Hours Tested PRODUCTION FOR TEST PERI00 OIL-BBL GAS-MCF WATER-BBL CHOKE SIZE GAS-OIL RATIO Flow Tubing PreSS. Casing Pressure CALCULATED 24-HOUR RATE OIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-API (CORK) Z7. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water (attach separate sheet, if necessary). Submit core chips; if none, state "none". None ~, , ~ ~~~ =~ ~~$ ~~ NCU 8 _~1 I"J Form 10-407 Revised 12/200 ~ ~ ~ ~'~ ~~INUED ON REVERSE $IDE r 28 GEOLOGIC MARKERS 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 2790 2790' None Ugnu M 3939 3939' Schrader Bluff N 4185' 4183' Schrader Bluff O 4337 4333' Base Schrader Bluff /Top Colville 4663' 4653' H RZ 6274' 6239' Kalubik 6500' 6461' Kuparuk D 6627' 6586' Kuparuk C 6650' 6609' Kuparuk B 6822' 6779' Kuparuk A .6962' 6916' Miluveach 7047' 6999' Kingak 7724 7618' Sag River 9209' 8619' Kingak 12533' 8674' Sag River 12796' 8694' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys, Surface Location As-Built 31. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed Terrie Hubble Title Technical Assistant Date - O~~ ~S PBU L-50 205-136 Prepared By Name/Number• Terlie Hubble, 564-4628 Well Number Permit No. / A royal No. Drilling Engineer: Scott Kolstad, 564-5347 INSTRUCTIONS GENERAL: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITEM ia: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Satt 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. ITeM 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. ITEM 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 Litt, 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: 10/24/2005 7:35:14 AM • BP EXPLORATION Page 1 of 14 Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 Event Name: DRILL+COMPL ETE Contractor Name: NABOBS ALAS KA DRILLING I Rig Name: NABOBS 9ES Date i From - To ~'~ Hours ~ Task ~' Code ~'~ NPT 9/28/2005 -- 06:00 - 07:00 - 1.00 _ MOB - P f 07:00 - 08:00 1.00 MOB P f 08:00 - 10:30 2.50 MOB P f 10:30 - 11:00 0.50 MOB P f 1 i:00 - 20:00 I 9.001 RIGU I P 20:00 - 21:00 1.00 RIGU P 21:00 - 22:00 1.00 RIGU P 22:00 - 00:00 I 2.001 RIGU I P 9/29/2005 00:00 - 03:30 3.50 RIGU P 03:30 - 04:30 1.00 RIGU P 04:30 - 05:00 I 0.501 BOPSUR P 05:00 - 06:00 1.00 BOPSU P 06:00 - 08:30 2.50 DRILL P 08:30 - 09:30 1.00 DRILL P 09:30 - 12:00 2.50 DRILL P 12:00 - 16:00 ~ 4.00 ~ DRILL P 16:00 - 17:00 1.00 DRILL P 17:00 - 18:00 1.00 DRILL P 18:00 - 19:30 ~ 1.50 ~ DRILL ~ N WAIT ~ SURF 19:30 - 20:00 0.50 DRILL P SURF 20:00 - 00:00 4.00 DRILL P SURF 9/30/2005 ~ 00:00 - 02:00 ~ 2.001 DRILL ~ P ~ ~ SURF 02:00 - 03:30 1.50 DRILL P SURF 03:30 - 22:00 18.50 DRILL P SURF Spud Date: 9/29/2005 Start: 9/28/2005 End: 10/23/2005 Rig Release: 10/23/2005 Rig Number: Phase Description of Operations j _ _ _ - __- RE Move pits around pad. RE Move satelite camp to opposite end of pad. RE Move rig sub base around pad, spot over L-50, lay rig mats RE Spot mud pits. Accept rig for L-50 operations @ 11:00 hr, 9/28/2005. NU surface annular BOP and diverter system, mix spud mud, load pipe shed with 4" HT-40 DP and HWDP. Flange bolt holes wouldn't line up due to well houses on one side and flow line stand on the other. Rig up floor to pick up drill pipe. Attempt to pick up drill pipe. Tagged ice plug @ 36'. LD drill pipe. ND dresser sleave. Loosen and turn annular BOP to line up bolt holes and move diverter lin away from flow line stand. Continue NU surface diverter system. Pick up bit, NBSTB, XO, and 2 joints of drill pipe to drill out ice plug. Perform diverter test. 'Witness of test waived by AOGCC rep Lou Grimaldi. Fill hole and check for leaks, repair small leak on annular BOP. Clear ice plug from conductor pipe. Pick up drill pipe and HWDP. Stand back in derrick. Make up jar stand, 7" collar stand, rack in derrick. Make up 12 1/4" BHA #1. Bit, PDM w/ 1.5 deg ABH, MWD. Orient MWD Pre Spud Meeting. Directionally drill from 101' to 360'. 80 rpm, 2k WOB, 400 ft/Ibs torque. 700 gpm, 980 psi. PRE PRE PRE PRE PRE PRE PRE PRE SURF SURF SURF SURF Spud L-50 12 1/4" Surface Hole @ 12:45 hr, 9/29/2005 POH from 360' to 171'. PU jar stand and RIH. Directionaly drill from 360' to 543'. 80 rpm, 2k WOB, 400 ft/Ibs torque. 700 gpm, 980 psi. 3 Super suckers stuck behind Nordic 1 rig move. Circulate bottoms up X 3. 680 gpm, 1010 psi, 80 rpm, 600 tq. Reduce circulation rate to 307 gpm, 360 psi, 0 rpm, oriented toolface @ 150 magnetic. Rig up Gyro Data. Gyro survey. Directionally drill from 543' to 727'. PU - 71 k, SO - 68k, 80 rpm, 5k WOB, torque on - 1400, torque off - 500, 700 gpm, 1380 psi off, 1450 psi on. AST - .84 hr, ART - 4.66 hr. Directionally drill 12 1/4" surface hole from 727' to 1,003'. PU - 74k, SO - 72k, ROT - 75k, 700 gpm, 1650 psi off, 1780 psi on, off TO - 780, on TO - 1300, 80 rpm, WOB - 8-10k. Gyro multi-shots. Rig down Gyro Data. Directionally drill 12 1/4" surface hole from 1,003' to casing point @ 2,582'. PU - 96k, SO - 95k, ROT - 96k, 700 gpm, 2,840 psi off, 2,425 psi on, off TO - 1000, on TO - 2,300, 80 rpm, WOB -20-25k. AST - 3.5 hrs, ART - 11.04 hrs. Encountered hydrates from 1,550' to TD. TD 12 1/4" surface hole @21:45 hr, 9/30/2005. SURF SURF Printed: 10/24/2005 7:35:23 AM • BP EXPLORATION Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 Event Name: DRILL+COMPLETE Contractor Name: NABOBS ALASKA DRILLING Rig Name: NABOBS 9ES Date ~~'; From - To Hours ', Task I Code NPT 9/30/2005 22:00 - 23:00 1.00 y DRILL P 23:00 - 00:00 I 1.001 DRILL I P Start: 9/28/2005 Rig Release: 10/23/2005 Rig Number: Phase SURF SURF 10/1/2005 00:00 - 01:00 1.00 DRILL P SURF 01:00 - 02:30 1.50 DRILL P SURF 02:30 - 03:30 1.00 DRILL P SURF 03:30 - 04:00 0.50 CASE P SURF 04:00 - 06:00 2.00 CASE P SURF 06:00 - 11:00 5.00 CASE P SURF Page 2 of 14 Spud Date: 9/29/2005 End: 10/23/2005 Description of Operations Circulate bottoms up X 3 @ 700 gpm, 2430 psi, 80 rpm, 2250 Wlbs torque Monitor well - Ok. POH to run 9 5/8" surface casing from 2,582' to 1,214'. PU - 100k, SO - 98k. No drag, no problems. Continue POH with directional BHA #1 from 1,214' to 265' Break bit, lay down MWD, motor, NMLC, 2 NMSTB, XO, UBHO. Hole losing 30 bph. Clear floor of vendor tools, clean floor. Make dummy run with 9 5/8" casing hanger. Rig up to run surface casing. PJSM. PU 9-5/8" 40# L-80 BTC casing shoe track. Check float equipment - OK. Continue RIH without problems to 2,573. MU hanger and land. PU - 135k, SO - 110k. Lost 200 bbls mud from 02:30 hr. Ran total of 60 Jts 9 5/8" 40# L-80 BTC casing (8.75 special drift). Torque each connection to 9,000# utilizing Best-o-life 2000 NM thread lubricant. The float equipment has been Bakerlok'd. 11:00 - 12:00 I 1.001 CEMT I P I I SURF 12:00 - 15:00 3.001 CEMT P SURF 15:00 - 17:00 I 2.001 CEMT I P I I SURF FS @ 2573' FC @ 2483' Tam Port Collar @ 993' 25 bowstring centralizers Lay down Frank's fill-up tool, blow down top drive, Make up cement head and lines. Circulate and condition mud for cement job. Stage pumps to 9 bpm, 400 psi, PU - 135k, SO - 124k. Reciprocated casing 10' strokes through out circulation. PJSM. Pump 5 bbls H2O, shut down, test lines to 3,500 psi - OK. Pump 20 bbls CW 100 spacer @ 6.5 bpm, FCP - 130 psi. Shut down. Pump 75 bbls 10.1 ppg MUDPUSH II spacer @ 6.5 bpm, FCP - 100 psi. Shut down. Drop bottom plug. Pump 370 bbls class "G" 10.7ppg Lead cement slurry @ 8 bpm, FCP - 280 psi. Pump 62.5 bbls class "G" 15.8 ppg Tail cement slurry @ 5 bpm, FCP - 300 psi. Shut down. Drop top plug, kick out with 10 bbls H2O. Pump with rig pumps and displace cement @ 10 bpm, FCP - 1600 psi. Slow pumps to 3 bpm prior to plug bump, land casing. FCP - 600 psi Bump plug with calculated volume with 2,000 psi. Bleed of pressure, check floats - OK CIP @ 16:55 hr. Reciprocated casing through out cement job until displacing Printed: 10/24/2005 7:35:23 AM BP EXPLORATION Page 3 of 14 Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 Spud Date: 9/29/2005 Event Name: DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 Rig Name: NABOBS 9ES Rig Number: Date ' From - To ' Hours ', Task ~ Code ; NPT Phase ' Description of Operations 10/1/2005 15:00 - 17:00 2.00 CEMT P -- SURF - - last 20 bbls prior to plug bump. Returned 45 bbls cement to surface. 17:00 - 18:30 1.50 CEMT P SURF Rig down cementing and casing equipment, flush surface stack, clean out under rotary table. 18:30 - 21:30 3.00 DIVRTR P SURF Nipple down diverter, surface BOP. Change out drilling nipple. 21:30 - 22:30 1.00 BOPSU P SURF Install casing head. Test MM seal to 1,000 psi - 10 min - OK 22:30 - 00:00 1.50 BOPSU P SURF Nipple up 5M BOPE. 10/2/2005 00:00 - 01:30 1.50 BOPSU P SURF Continue nipple up BOPE 01:30 - 02:00 0.50 BOPSU P SURF Change out long bails to short bails. 02:00 - 02:30 0.50 BOPSU SURF Rig up to test BOPE. 02:30 - 05:30 3.00 BOPSU P SURF Test BOPE to 250 psi low, 3,500 psi high. Witness of test waived by AOGCC rep. John Crisp. Test witnessed by BP rep Robert French, Nabors Toolpusher Brian Tiedemann. 05:30 - 06:00 0.50 BOPSU P SURF Rig down test equipment, install wear bushing. 06:00 - 09:00 3.00 DRILL P INT1 Pick up 69 joints 4" HT-40 drill pipe to 2,147'. 09:00 - 10:00 1.00 DRILL P INTi POH from 2,147' standing drill pipe in derrick. 10:00 - 12:00 2.00 DRILL P INT1 Pick up 69 joints 4" HT-40 drill pipe to 2,146'. 12:00 - 13:00 1.00 DRILL P INTi POH from 2,146' standing drill pipe in derrick. 13:00 - 14:00 1.00 DRILL P INTi Pick up 33 joints 4" HT-40 drill pipe to 1,026'. 14:00 - 14:30 0.50 DRILL P INT1 POH from 1,026' standing drill pipe in derrick. 14:30 - 17:00 2.50 DRILL P INT1 Pick up 8 3/4" directional BHA #2 to 275' 17:00 - 18:00 1.00 DRILL P INT1 RIH with 8 stds HWDP to 1,011'. Shallow hole test MWD. Tested Tam Port Collar to 1000 psi - 5 min - OK. 18:00 - 19:00 1.00 DRILL P INT1 RIH. Pick up 18 joints 4" HT-40 drill pipe, make up bottom ghost reamer, pick up 15 joints 4" HT-40 drill pipe to 2,043'. 19:00 - 19:30 0.50 DRILL P INTi Service top drive, crown, blocks, attach blower hose. 19:30 - 20:00 0.50 DRILL P INTi RIH to 2,324'. Circulate air out of drill pipe. 20:00 - 21:00 1.00 CASE P INT1 Test 9 5/8" surface casing to 3,500 psi - 30 min - 0 pressure loss. 21:00 - 23:00 2.00 DRILL P INTi Wash from 2,324' to top of FC on depth @ 2,483'. Drill float equipment, cement, rat hole. Drill 20' of new hole from 2,582' to 2,602'. PU - 95k, SO - 91 k, RW - 94k, 500 gpm, 1600 psi - on, 1,650 psi -off, 40 rpm, TO - 1,600 -off, 1,700 -off. ART - .08 hr. 23:00 - 00:00 1.00 DRILL P INT1 Displace hole from 9.4 ppg mud to new 8.8 ppg LSND mud @ 500 gpm, 1600 psi. 10/3/2005 00:00 - 00:30 0.50 DRILL P INT1 Pull the bit inside the surface shoe and perform LOT to 14.59 ppg EMW with 8.8 ppg fluid, 2,573' TVD, and 775 psi surface pressure. 00:30 - 01:00 0.50 DRILL P INTi Circulate and condition mud. Obtain benchmark ECD - 9.17 ppg. 580 gpm, 950 psi, 80 rpm. 01:00 - 00:00 23.00 DRILL P INT1 Directionally drill 8-3/4" from 2,602' to 5,631' - PU - 140k, SO - 133k, ROT - 139k, WOB - 15k, 580 gpm, 2,260 psi on bottom, 2,000 psi off bottom, 80 rpm, TO on 3-4k, TO off - 2k, Calc ECD - 9.69 ppg, Actual ECD - 9.82 ppg. AST - 3.06 hrs., ART - 11.93 hrs. Backream each stand before connection. 10!412005 00:00 - 00:00 24.00 DRILL P INT1 Directionally drill 8 3/4" hole from 5,631' to 7,185' MD, 7,135 TVD. PU - 167k, SO - 150k, ROT - 159k, WOB - 15-25k, 576 gpm, 3,400 psi on bottom, 3,130 psi off bottom, 80 rpm, TO on 5.5k, TO off - 3k, Calc ECD - 10.87 ppg, Actual ECD - 11.05 ppg. ART - 13.05 hrs., AST - 5.47 hrs. Backream each stand before connection. Mud weighted up to 10.4 ppg @ 5,692' Printed: 10/24/2005 7:35:23 AM s BP EXPLORATION Page 4 of 14 Operations Summary Report Legal Well Name: Common Well Name Event Name: Contractor Name: Rig Name: L-50 L-50 Spud Date: 9/29/2005 DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 NABOBS 9ES Rig Number: Date 1 From - To Hours ~ Task ~ Code ~', NPT l ~_ _- 10/5/2005 00:00 - 00:00 24.00 DRILL P 10/6/2005 00:00 - 16:30 16.50 DRILL P 16:30 - 00:00 10/7/2005 ~ 00:00 - 00:30 00:30 - 05:00 05:00 - 05:30 05:30 - 07:00 07:00 - 12:30 12:30 - 16:30 7.501 DRILL I P Phase I~, Description of Operations INTi Directionally drill 8 3/4" hole from 7,185' to 8,156' MD, 7,927' TVD. PU - 172k, SO - 151 k, ROT - 164k, WOB - 10-20k, 500 gpm, 3,530 psi on bottom, 3,300 psi. off bottom, 80 rpm, TO on 5.5k, TO off - 3.5k, Calc ECD - 12.24 ppg, Actual ECD - 12.5 ppg. AST - 11 hrs., ART - 4.8 hrs. Backream each stand before connection, slow pump on down stroke to 75% pump rate. "Started seeping mud @ 7400' appx 25 bph. Strung in Mix II med @ 6 sx/hr. Mud loses have decreased to 6 bph. Lost total of 199 bbls. INTi Directionally drill 8 3/4" hole from 8,156' to 9,195 MD', 8,615' TVD. PU - 193k, SO - 1502k, ROT - 168k, WOB - 10-20k, 500 gpm, 3,720 psi on bottom, 3,570 psi off bottom, 80 rpm, TO on 5.5k, TQ off - 4k, Calc ECD - 12.27 ppg, Actual ECD - 12.29 ppg, AST - 5.9 hrs, ART - 7.39 hrs. Backream each stand before connection, slow pump on down stroke to 75% pump rate. INTi Circulate for samples after drilling 5' increments from 9,195'-9,200', 9,200'-9,205', 9,205'-9,210'. 500 gpm, 3,470 psi, 100 rpm, 4k torque, PU - 193k, SO - 150k, RW - 168 k. Calc ECD - 12.27 ppg, Actual ECD - 12.18 ppg. AST - 5.9 hrs, ART - 7.39 hrs. Circulated between X 2.5 and X 5 bottoms up for sample intervals. TD 8 7/5" intermediate hole @ 9,210' MD, 8,619' TVD @ 23:00 hrs, 10/6/2005 0.50 DRILL P INT1 Continue circulate for samples @ 9,210'. 500 gpm, 3,479 psi, 100 rpm, 4k torque, PU - 193k, SO - 150k, RT - 168k. Calc ECD - 12.27 ppg, Actual ECD - 12.18 ppg. Unable to confirm geology with samples. Confirmed with log correlations that shows that TD is in the silted transition zone just above the Sag. 4.50 DRILL P INT1 Short trip. POH from 9,210' to 2,512'. PU - 210k, SO - 155k without pump. Pulled 25k over @ 7,800' to 7,766' bit depth, 2,574' to 2,540 top Ghost reamer depth. Work through OK, wipe same. No other problems to 9 5/8" casing shoe. Started losing 1 bbl over 5 stand calculated displacement after upper ghost reamer went above shoe. No other problems. 0.50 DRILL P INTi Circulate dry job out of hole. 1.50 DRILL P INTi Service rig. Cut and slip drilling line, service top drive, block, crown, drawworks, check brakes. 5.50 DRILL P INT1 RIH from 2,512' to 9,210' Hit bridge @ 7,642'. Work down to 7813. (Hole still taking weight) Ream down with 425 GPM @ 60 RPM from 7,813' to to 8,306'. Continued RIH dry, from 8,306' to 9,146'. Washed/ream from 9,146' to bottom @ 9,210' Lots of wall cake and cuttings seen while reaming down. ECD's in the 12.5 to 12.6 range while reaming. "Dump 290 bbls. of mud while circulating out wall cake saturated returns." 4.00 DRILL P INT1 Circulate and condition mud. Stage pumps up from 425 GPM to 500 gpm, while watching ECD's. (Maximum ECD's seen during circulation was 12.6). Once ECD's were below 12.4, a Printed: 10/24/2005 7:35:23 AM • BP EXPLORATION Operations Summary Report Page 5 of 14 Legal Well Name: L-50 Common W ell Name: L-50 Spud Date: 9/29/2005 Event Nam e: DRILL+C OMPLE TE Start : 9/28/2005 End: 10/23/2005 Contractor Name: NABOR S ALASK A DRI LLING I Rig Release: 10/23/2005 Rig Name: NABOR S 9ES Rig Number: Date ', From - To Hours ~! Task ~, Code II NPT ' Phase ' ~, Description of Operations 10/7/2005 12:30 - 16:30 4.00 DRILL P INT1 30 BBL. weighted, Hi-Vis sweep was pumped S-S while rotating and reciprocating string at 100 RPM and 510 GPM. Some cavings and larger mud balls were seen at surface with weighted sweep). Parameters: 3,950 psi, 100 rpm, 4.5k tq, PU - 195k, SO - 165k, RT - 161 k, Calc ECD - 12.27 ppg, Act ECD - 12.33 Returned a lot of material on initial bottoms up. Circulated until ECD less than 12.3 ppg. Blend in 290 bbls 11.8 ppg. new mud treated with 2% tubes. Spot 200 bbls. of mud treated with additional 2% tubes to cover the shale intervals from bottom to 7000 +30%. 16:30 - 19:00 2.50 DRILL P INTi POH from 9,210' to 1,011'. Layed down both ghost reamers. PU - 210k, SO - 155k without pump. Tripped good all the way. 19:00 - 22:p0 3.00 DRILL P INT1 Lay down 8 3/4" drilling BHA #2. 22:00 - 22:30 0.50 DRILL P INT1 Clear floor of BHA tools. 22:30 - 00:00 1.50 CASE P INTi Change from short bails to long bails. Flush BOP stack. 10/8/2005 00:00 - 01:30 1.50 CASE P INT1 Pull wear bushing, install test plug. Change upper pipe rams from 3.5" x 6" VBR to 7". Test door seals to 3,500 psi. Pull test plug 01:30 - 03:00 1.50 ~ CASE P INT1 Rig up to run 7" casing. Make dummy run with 7" hanger. 03:00 - 08:00 5.00 CASE P INT1 PJSM. Pick up, make up shoe and float collar joint, install baffle on top of float collar, RIH with joint #2. Rig up Franks fill up tool. Pick up, make up joint #3 with landing collar. Fill pipe and check floats - OK. Baker Lok'd all connections below landing collar. Used Best-O Life 2000 NM thread compound. Torqued connections to 8,000 fUlbs average. Fill pipe every joint with fill up tool. 1 centralizer, free floating on odd # jts from jt. #53-149. 2 centralizers, free floating with stop ring locked in mid joint on even # jts. from jt. #54-150. RIH with 7" 26# L-80 BTC-M intermediate casing to 1,250', started pushing mud away. Hole static with pipe stationary. Reduce running speed and continue RIH to shoe @ 2,573' 08:00 - 09:00 1.00 CASE P INT1 Circulate 1.5 times bottoms up by staging pumps up to 5 bpm, 280 psi, PU - 96k, SO - 94k. Lost 9 bbls circulating. 09:00 - 17:00 8.00 CASE P INT1 Continue RIH with 7" casing from 2,573' to 3,782'. Circulated from 3,782' S joints @ 2 bpm, 5 min each to 3,952'. RIH from 3,952' to 5,196'. Attempt circulating down 3 jts to 5,279'. No circulation. POH to 5,113', attempting to circulate on the up stroke. No circulation. Check static losses @ 30 bph by filling annulus. 17:00 - 20:00 3.00 CASE N DPRB INT1 Build 11.8 ppg mud volume and mix LCM to 30 ppb. Mixed 11.8 ppg mud with LCM to fill annulus and mixed new 11.8 ppg for filling 7" casing. Build total mud volume to 300+ bbls before starting back in hole. Monitored mud losses in annulus while building volume. Losses started @ 30 bph and slowed down to 24 bph by 20:00. 20:00 - 00:00 4.00 CASE P INT1 Continue RIH from 5,113' to 6,860' filling annulus with 11.8 ppg LCM treated mud. Loss rate @ 27 bph. Lost total of 221 bbls for casing job up to midnight. 10/9/2005. 00:00 - 04:00 4.00 CASE P INT1 Continue RIH with 7" 26# L-80 BTC-M casing. Attempt circulation from 6,860' to 7,028'. Had partial circulation on last Printed: 10/24/2005 7:35:23 AM • BP EXPLORATION Page 6 of 14 Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 Spud Date: 9/29/2005 Event Name: DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 Rig Name: NABOBS 9ES Rig Number: I Date From - To Hours Task ,Code Phase - -_ _ _ . NPT L- _' 10/9/2005 100:00 - 04:00 I 4.001 CASE I P I I INTi 04:00 - 04:30 I 0.501 CASE I P I I INT1 04:30 - 06:00 I 1.501 CASE { P I I INT1 06:00 - 08:00 ~ 2.001 CASE ~ P ~ ~ INT1 08:00 - 11:00 I 3.001 CEMT I P I I INT1 11:00 - 13:30 I 2.501 CEMT I P I I INT1 13:30 - 14:30 ~ 1.00 ~ CEMT ~ P ~ ~ INTi Description of Operations joint by working on the up stroke. Pumped 80 bbls away. Continue RIH from 7,028' to 9,000'. Started taking weight, +-50k ~ 9,000'. Work down without pumping to 9,180'. Pick up landing joint with hanger and land casing @ 9,206'. Loss rate slowed down to 15 bph. Ran total of 220 jts of 7" 26# L-80 BTC-M casing. FS @ 9206' FC @ 9162' LC C~3 9118' Cementer @ 4919' 148 Rigid Straight Bladed Centralizers 51 Stop Rings Rig down Franks fill up tool, rig up cement head and cement lines. Attempt to establish circulation with 1 bpm, stage up to 2 bpm, 350 psi with 2 % partial returns. Back down pump rate to 1 bpm, 190 psi. Lost 180 bbls to 0600 hr. 401 bbls total for casing run. Stage pumps up from 1 to 5 bbls. per minute while hole attempts to packoff. Pumped a total of 275 bbls. of mud away while cleaning lower section of hole for 1st stage cement. (Seeing app. 5% returns when pumps are at 5 BPM.) Offload 290 bbls. of new mud and blend into active. Water back system to 11 ppg. to give a surface volume of 400 prior to beginning cement job. PJSM with Dowell. Slow pumps to 30 SPM during PJSM. Shut down pumps while waiting for Dowell to batch mix. Pump 5 bbls. of water and test lines to 4,000. Drop bottom plug and load top plug. Pump 35 bbls. mud push at 12.2 ppg. followed by 107 bbls. lead cement C~3 12.5 ppg and 38 bbls. of 15.8 ppg tail. Drop top plug and kick out with 5 bbls. water. Switch to rig and displace at 5 BPM slowing rate as cemenl went around the corner. Began packing off after 60 bbls. of lead had rounded the corner. Slowed the pumps back to 50 SPM for remainder of job. Bumped plug at calculated displacement with 95% effeciency. (App. 2% returns while pumping job) Showed good lift pressure buildup after the cement went around the corner. Pressure went from 275 PSI to 1050 while pumping 145 bbls. CIP @ 10:40. Load closing plug for 2nd stage job in head. Pressure up casing to 3650 and shear open cementer. Observed returns back as pressure released from the sheared cementer into the annulus. Circulate annulus at 3 BPM. Losses at 50%. (Only have 90 bbls. of surface volume) Begin watering system back to 10 ppg while reducing circulating rate to 2 bpm. Increase rate slowly as pit volume allows. Loss rate improving as watered back 1 ippg. mud inside begins to fill backside. Increase rate to 5 bpm as 10 ppg mud fills backside. Circulate at full returns. At app. 6800 strokes (Bottoms up stks 2332) there were signs of cement back to the surface. (PH increase and cement odors) Pump 5 bbls. water, 35 bbls. Mudpush @ 12.2 ppg followed by 52 bbls. 12.5 ppg. cement. Kick out closing plug with 5 bbls of water and displace with rig pumps to calculated strokes. Pumped cement at 5 bbls per minutes once it went around the Printed: 10/24/2005 7:35:23 AM • BP EXPLORATION Operations Summary Report Page 7 of 14 Legal Well Name: L-50 Common Well Name: L-50 Spud Date: 9/29/2005 Event Name: DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 Rig Name: NABOBS 9ES Rig Number: Date iii From - To Hours ~ Task ~' Code NPT ' Phase Description of Operations 10/9/2005 13:30 - 14:30 1.00 CEMT I P ~ INTi corner to within 10 bbls. of bump, then slowed to 2 bpm. 14:30 - 16:30 ~ 2.001 CEMT I P 16:30 - 18:00 1.50 CEMT P 18:00 - 19:30 1.50 CEMT P 19:30 - 21:00 1.50 DRILL P 21:00 - 00:00 3.00 DRILL P 10/10/2005 100:00 - 01:30 I 1.501 DRILL I P 01:30 - 02:30 1.00 DRILL P 02:30 - 04:00 1.50 DRILL P 04:00 - 06:30 2.50 DRILL P 06:30 - 07:30 1.00 DRILL P 07:30 - 09:30 2.00 DRILL P 09:30 - 10:30 1.00 DRILL P 10:30 - 11:30 1.00 DRILL P 11:30 - 12:00 I 0.501 DRILL I P 12:00 - 13:00 I 1.001 DRILL I P Pressure up to 1650 and close cementer. CIP @ 14:20 hrs INT1 Lay down landing joint. Install and test packoff to 5,000 psi for 15 minutes. Perform LOT down 9 5/8 X 7 annulus with 11.8 ppg. MW. The TVD was C~3 2573 and took 250 PSI surface pressure to break yielding a 13.65 EMW. Pump 4 bbls. away down the annulus to confirm infectivity. INTi Change top pipe rams from 7" to 3.5" x 6" VBR. INTi Rig up and test top pipe rams to 250 psi, 3500 psi. Rig down test equipment, install wear bushing. PROD1 Pick up, make up 6 1/8" casing cleanout BHA #3 assembly. PROD1 RIH, picking up 4" HT-40 drill pipe to 3,289'. Pumped 2 bbls mud every 2 hours down 9 5/8" X 7" annulus 3 bpm, 450 psi PROD1 Continue RIH with casing clean out assembly BHA #3, picking up 4" HT-40 drill pipe to 4,875' PROD1 Rig up and pressure test 7" casing from surface to 4,919', 3,500 psi - 10 min - OK. 'Compression strength had reached 500 psi ~ 20:45 hrs, 10/9/2005, 1700 psi @ 01:30 hrs, 10/10/2005, PRODi Drill out HES cementer @ 4,919' - 4921. PU - 121 k, SO - 112k, RT - 112k, WOB - 5-10k, 240 gpm, 770 psi, 40 rpm, 1.4k torque. PROD1 Mix and pump dry job for TIH. RIH from 4,921' to 9,077' PROD1 Rig up and pressure test 7" casing to 3,500 psi - 30 min - 0 loss. Rig down. PROD1 Wash down from 9,077' to top of landing collar @ 9,118'. Drill out landing collar, float collar, and cement to 9,171'. PU - 181 k, SO - 141 k, RT - 161 k, WOB - 5-10k, 250 gpm, 1750 psi, 40 rpm, 6k torque on bottom, 3.4k off bottom. Attempt to make a connection. Mud backflowing up the drill pipe due to heavier mud on backside. PROD1 Circulate out 11 ppg mud. PROD1 Continue clean out shoe track to within 5' of shoe to 9,201'. PU - 181 k, SO - 141 k, RT - 161 k, WOB - 5-10k, 250 gpm, 1750 psi, 40 rpm, 6k torque on bottom, 3.4k off bottom. PROD1 Circulate bottoms up C~3 500 gpm, 3185 psi, 60 rpm, 4.3k torque. PROD1 Reverse circulate out old mud with fresh water ~ 6 bpm, 1400 psi. Pumped 331 bbls water. Sim opps: Injected 50 bbls 11 ppg mud down 9 5/8" X 7" annulus @ 1.9 bpm, 500 psi. 13:00 - 15:00 2.00 DRILL P PROD1 Rig up to circulate the long way and pump 50 bbls "Clean Up" pill, 30 bbls LVT spacer, and 325 bbls 9.6 ppg Versapro MOBM @ 356 gpm, 1680 psi, 120 rpm, 6.1 k torque. FCP - 2,550 psi, 356 gpm, 3.2k final torque. Sim opps: Freeze protected 9 5/8" annulus with 65 bbls, 60 deg dead crude @ 2 bpm. FCP - 1200 psi. SIP - 950 psi. 15:00 - 15:30 0.50 DRILL P PROD1 Clean out remainder of shoe track and old hole to 9,210'. PU - 185k, SO - 162k, RT - 153k, 315 gpm, 2,220 psi, 100 rpm, 3.1 k Printed: 10/24/2005 7:35:23 AM ,J BP EXPLORATION Page 8 of 14 Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 Spud Date: 9/29/2005 Event Name: DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 Rig Name: NABOBS 9ES Rig Number: Date !From - To Hours ' Task ~ Code ! NPT '~ Phase 10/10/2005 15:00 - 15:30 0.50 DRILL P PROD1 15:30 - 16:30 1.00 DRILL P PRODi 16:30 - 20:00 3.50 DRILL P PROD1 20:00 - 20:30 0.50 DRILL P PROD1 20:30 - 21:00 0.50 DRILL P PROD1 21:00 - 22:30 1.50 DRILL P PROD1 22:30 - 00:00 1.50 DRILL P PROD1 10/11/2005 00:00 - 02:00 2.00 DRILL P PROD1 02:00 - 02:30 0.50 DRILL P PROD1 02:30 - 03:00 0.50 DRILL P PROD1 03:00 - 03:30 0.50 DRILL P PROD1 03:30 -04:30 1.00 DRILL P PROD1 04:30 - 06:00 1.50 DRILL P PROD1 06:00 - 07:30 1.50 DRILL P PROD1 07:30 - 11:00 3.50 DRILL P PROD1 11:00 - 12:00 1.00 DRILL P PROD1 12:00 - 16:30 4.50 BOPSU P PROD1 16:30 - 18:30 2.00 DRILL P PROD1 18:30 - 22:00 3.50 DRILL P PROD1 22:00 - 00:00 2.00 DRILL P PROD1 10/12/2005 00:00 - 00:00 24.00 DRILL P PROD1 10/13/2005 00:00 - 00:30 0.50 DRILL P PROD1 00:30 - 01:15 0.75 DRILL N DPRB PROD1 01:15 - 01:45 0.50 DRILL N DPRB PROD1 01:45 - 02:15 0.50 DRILL N DPRB PROD1 02:15 - 05:30 3.25 DRILL P PROD1 Description of Operations torque. Circulate bottoms up @ 315 gpm, 2250 psi, 100 rpm, 3.2k torque. POH from 9,210' to 215'. Lay down BHA #3, (6) 4.75" DC's, bit sub, 6 1/8" used bit. Clean rig floor of MOBM. Pick up, make up 6 1/8" drilling assembly BHA #4 with 2.29 ABH motor, MWD-LW D, 2 NMDC, circ sub, x-over, jar, 24 HWDP. Shallow hole test MWD RIH with BHA #4 on 4" HT-40 drill pipe from 989' to 4,152' RIH with BHA #4 on 4" HT-40 drill pipe from 4,152" to 9,100' Service top drive, blocks, crown. Fill pipe, break circulation, obtain SPR's, orient high side. Directionally drill new 6 1/8" hole from 9,210' to 9,230'. PU - 191k, SO - 153k, WOB - 10k, 240 gpm, 2,320 psi on bottom, 2,280 psi off. POH from 9,230' to shoe. Circulate 10 min for FIT. Perform FIT to EMVV of 11.5 ppg (850 psi w/ 9.6 ppg mud, 8,618' TVD) Directionally drill 6 1/8" hole from 9,230' to 9,273'. PU - 191 k, SO - 153k, WOB - 10k, 240 gpm, 2,320 psi on bottom, 2,280 psi off. CBU - 290 GPM C~ 3045 psi, drop dart & open circ. sub, pump dry job. POH to BHA w/ correct displacement. Stand back HWDP, Jars & flex clrs. L/D MWD & Motor. P/u test jt, pull wear bushing. Test all BOPE to 250 psi. -Low & 3500 psi. -High. No failures. Witness of test waived by Jeff Jones, AOGCC. Test witnessed by Alan Madsen, BP WSL & Kelly Cozby, NAD Toolpusher. R/D test equip, blow down all lines & install wear bushing. P/U & M/U BHA # 5 with 1.5 deg. Motor. Load nuclear sources. Surface test - OK. RIH, filling pipe every 3000', to 9174'. Slip & cut 96 tt. of drilling line. Service & lubrcate Draworks and Top Drive. Directional drill 6 1/8" hole from 9,273' to 10,292'. 275 GPM 3125 psi. WOB = 5 to 10K, Torque On =6400, Torque Off = 5100, Rot C~? 60 RPM, P/U Wt. = 181 K, S/O Wt. = 142K, ROT Wt =161 K. Lost 10 Bbls mud making connection @ 10,292. Begin mixing LCM pill. Directional drill ahead (slide) from 10,292' to 10,307' while spotting 22 bbls of 50 Ib/bbl Safe-carb pil in open hole above bit.(Pill = 10 ppb S/C 20, 20 ppb S/C 250, 20 ppb S/C 500). Losses increased to 3 bbl /min at end. Total 47 bbls lost. POH 13 stands to shoe. Hole took 3 bbls. Monitor well. 1st 15 min.- losses @ 6 Bbls / Hr. 2nd 15 min.- losses @ 4 bbls / hr. RIH to 10, 292'. Wash to bottom Q 10,307' Directional drill ahead from 10,307' to 10,418'. Losses up to 30 Bbls Hr. Stringing in one sack Safe-Garb every 5 minutes - alternating between Safe-carb 250 & Safe - Carb 500.Loss rate increased to 120 Bbbls / Hr. Pump 20 Bbll LCM pill followed by additional 30 Bbl piI This 50 Ib /bbl pill consisted of 20 ppb Printed: 10/24/2005 7:35:23 AM BP EXPLORATION Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 Event Name: DRILL+COMPLETE Contractor Name: NABOBS ALASKA DRILLING Rig Name: NABOBS 9ES Date From - To Hours Task ,Code NPT 10/13/2005 102:15 - 05:30 3.251 DRILL P Start: 9/28/2005 Rig Release: 10/23/2005 Rig Number: Phase PROD1 05:30 - 06:00 I 0.501 DRILL I N I DPRB I PRODi 06:00 - 07:00 1.00 DRILL N DPRB PROD1 07:00 - 08:30 1.50 DRILL N DPRB PROD1 08:30 - 09:00 0.50 DRILL P PROD1 09:00 - 14:00 5.00 DRILL N DPRB PROD1 14:00 - 19:30 I 5.501 DRILL I N I DPRB I PROD1 19:30 - 20:00 I 0.501 DRILL I N I DPRB I PRODi 20:00 - 00:00 I 4.001 DRILL I P I I PROD1 10/14/2005 100:00 - 18:00 I 18.001 DRILL I P I I PROD1 18:00 - 19:00 I 1.001 DRILL I N I DPRB I PROD1 19:00 - 20:00 I 1.001 DRILL I N I DPRB I PROD1 20:00 - 21:00 1.00 DRILL N DPRB PROD1 21:00 - 22:30 1.50 DRILL N DPRB PROD1 22:30 - 23:30 I 1.001 DRILL I N I DPRB I PROD1 23:30 - 00:00 I 0.501 DRILL I P I I PROD1 10/15/2005 ~ 00:00 - 05:15 ~ 5.25 ~ DRILL ~ P ~ ~ PROD1 Page 9 of 14 Spud Date: 9/29/2005 End: 10/23/2005 Description of Operations S/C 250, 20 ppbl S/C 500 & 10 ppb S/C 40. Losses @ 94 bbls / Hr. NOTE: Mud plant mixing 290 bbls Versa-Pro OBM. Spot another 25 BBIs of 50 ppb Safe- carb Pill (same mixture as above) across loss zone. POH to 9900'. Reciprocate string Circulate @ 250 GPM - 2250 psi above loss zone. Losses = 83 BPH. Spot another 25 bbl, 50 ppbl LCM Pill with same formula as above. Losses 28 BPH while spotting this pill. POH to shoe - static losses = 6 BPH. Service Top Drive. Build 100 Bbls VersaPro OBM while waiting on delivery of mud from plant. Circulate across the top of hole with losses of 6 BPH. RIH to 10,250. Spot 25 Bbl, pill with the following mixture: 15 ppb. Mix II Med., 10 ppb Mix II coarse, 10 ppb G-Seal, 10 ppb Safe- Carb 250 & 5 ppb Nut plug Medium. POH above loss zone to 9500' & circ @ 250 GPM. Losses 24 BPH.RIH to 10,250' & repeat same procedure & pill recipe. Resume circulation. Losses down to 12.5 BPH. RIH. Tag LCM bridge @ 12,292'. Wash through w/ no problem & continue to bottom @ 10,418'. Directioal drill from 10,418 to 10,562. 250 GPM @ 2730 psi. Adding one sack of SafeCarb every 5 minutes: alternating SafeCarb 500 &SafeCarb 250. Losses @ 15 BPH. Directional drill 6 1/8" hole from 10,562' to 11,440'. 250 GPM @ 2775 psi. WOB = 5 to 10K, Torque On = 6800, Torque Off = 5600, Rot @ 60 RPM, P/U Wt. = 186K, S/O Wt. = 133K, ROT Wt =161 K. Losses @ 8 BPH. Survey every 30'. Rotate through every slide to log Density. At 11,440': String torqued up & lost 1000 psi pump pressure. P/U string -fluid out of sight. Pump down annulus & DS to fill hole. Iniial loss 90 BBIs. Mix LCM Pill. Spot 50 Bbl, 50 PPB LCM Pill with same mixture that was successful healing 1st. fault. - 15 ppb. Mix II Med., 10 ppb Mix II coarse, 10 ppb G-Seal, 10 ppb Safe- Carb 250 & 5 ppb Nut plug Medium. Regained circulation with 12 bbls of pill pumped. Drill ahead to 11,443', hopeing to further open fault for LCM. Lost 29 Bbls spotting pill. POH 10 stands to 10,560'. Circulate -staging up pumps to 265 GPM @ 2560 psi. Initial losses 30 BPH reducing down to 8 BPH. RIH to 11,414' .Wash down to bottom @ 11,440' orienting for slide. Directional drill from 11,443' to 11,468'. All slide, 250 GPM @ 2780 psi. Losses = 18 BPH. Again adding alternating sacks of SafeCarb 250 & 500 every 5 minutes. Directional drill 6 1/8" hole from 11,468' to 11,678'. 250 GPM @ 2900 psi. WOB = 5 to 10K, Torque On = 7000, Torque Off = 5600, Rot @ 60 RPM, P/U Wt. = 186K, S/O Wt. = 133K, ROT Wt =161 K. Losses started @ 18 BPH, reduced to 2 BPH. Adding alternating sacks of SafeCarb 250 & 500 - 1 sack every 5 minutes. Survey every 30'. Rotate through every slide to log Printed: 10/24/2005 7:35:23 AM • BP EXPLORAT{ON Page 10 of 14 Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 Spud Date: 9/29/2005 Event Name: DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 Rig Name: .NABOBS 9ES Rig Number: Hours ' Task ate ~ rom - To - 10/15/2005 00:00 - 05:15 ~ 5.25 DRILL 05:15 - 06:00 0.75 DRILL 06:00 - 07:00 I 1.001 DRILL 07:00 - 09:00 2.00 DRILL 09:00 - 10:00 1.00 DRILL 10:00 - 12:30 2.50 DRILL 12:30 - 13:00 0.50 DRILL 13:00 - 14:00 1.00 DRILL 14:00 - 15:00 1.00 DRILL 15:00 - 15:30 0.50 DRILL 15:30 - 16:30 1.00 DRILL 16:30 - 17:00 0.50 DRILL Code ? : NPT ~! Phase ~ Description of Operations P PROD1 Density. N DPRB PROD1 At 11,672' torqued up to 8K, followed by drilling break. Losses suddenly jumped up to 2 BPM. Stopped drilling, picked up off bottom & crirculating over top to determine static loss rate 60 BPH. N DPRB PROD1 Spot 37 Bbls , 50 PPB LCM pill @ following formula: 15 ppb. Mix II Med., 10 ppb Mix II coarse, 10 ppb G-Seal, 10 ppb Safe- Carb 250 & 5 ppb Nut plug Medium. Dlill from 11,678' to 11,690 while pumping pill trying to expose full fault. N DPRB PROD1 POH idling pump so as not to swab to 10,130'. N DPRB PROD1 Stage up pumps to 192 GPM @ 1500 psi. Rotate @ 60 RPM & reciprocate string. 80 BPH losses. N DPRB PROD1 Circulate across top while reciprocating string. Change out suction valve rubbers on pits which OBM had disintegrated. Lost 8 Bbls. N DPRB PROD1 Establish circulation @ 200 GPM, 1660 psi. Loss rate @ 64 BPH. N DPRB RROD1 RIH to 11,601' slowly -losses of 5 Bbls. N DPRB PROD1 Spot 29 Bbl, 50 PPB LCM pill same mixture as above. Drill to 11,694 while pill in string. When pill at bit: ramp pumps up to 260 GPM to work pill into loss zone. N DPRB PROD1 POH to 11,132' working pipe. N DPRB PROD1 Stage pumps up to 270 GPM, 2820 psi. Loss rate 24 BPH N DPRB PROD1 RIH to 11,601'. Stage pumps up to 250 GPM @ 2660 psi. String in LCM mix as above less Safe Carb.Losses @ 24 BPH. 17:00 - 00:00 I 7.001 DRILL I P 10/16/2005 100:00 - 16:00 I 16.001 DRILL I P 16:00 - 16:30 0.50 DRILL P 16:30 - 17:00 0.50 DRILL P 17:00 - 18:30 I 1.501 DRILL I P 18:30 - 19:30 1.00 DRILL P 19:30 - 00:00 4.50 DRILL P 10/17!2005 100:00 - 04:00 I 4.001 DRILL 1 P PROD1 Directional drill 6 1/8" hole from 11,694' to 11,922'. 250 GPM @ 2980 psi. WOB = 5 to 10K, Torque On = 5700, Torque Off = 4600, Rot @ 60 RPM, P/U Wt. = 182K, S/O Wt. = 137K, ROT Wt =160K. Adding LCM continuously through hopper same mixture as above less SafeCarb. Losses 30 to 35 BPH. Discontinued LCM additions @ 22:00 hrs. to clean annulus and minimize ECD'. Losses @ 35 BPH. Survey every 30'. Rotate through every slide to log Density. PROD1 Directional drill 6 1/8" hole from 11,922' to 12,611'. 250 GPM @ 2775 psi. WOB = 5 to 10K, Torque On = 7000, Torque Off = 6400, Rot @ 60 RPM, P/U Wt. = 201 K, S/O Wt. = 118K, ROT Wt =158K. Losses @ 30 - 35 BPH Began adding alternating sacks of SafeCarb 250 & 500 - 1 sack every 5 minutes @ 16:00 Hrs .Losses @ i8 BPH. Survey every 30'. Rotate through every slide to log Density. Geologist detected fault @ 12,540'. PROD1 Mad pass through fault @ Geologist request. PROD1 Slide from 12,611 to 12,628 per Geologist. Same parameters as above. PROD1 Circulate for samples @ Geologist request. Determined that we faulted into the Kingak. Anchorage Geology want to pull up and open hole sidetrack. Discussed w/ ODE. PROD1 Pump out of hole to 11,934'. PROD1 Trench from 11,934' to 11,974' for open hole sidetrack @ 250 GPm - 2445 psi. PROD1 Completed trenching and attempted to time drill for sidetrack @ 11,974'. Not sucessful -stacking out- getting wall stuck due Printed: 10/24/2005 7:35:23 AM • BP EXPLORATfON Page 11 of 14 Operations Summary Report Legal Wefl Name: L-50 Common Well Name: L-50 Spud Date: 9/29/2005 Event Name: DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 Rig Name: NABOBS 9ES Rig Number: Date ~ From - To Hours Task Code I NPT Phase Description of Operations _ _ _ 10/17/2005 100:00 -04:00 4.00 DRILL P PROD1 to hole tortuosity. 104:00 - 12:00 8.00 DRILL P PROD1 Rotate, build ledge @ 11,977' then time drill @ 3 ft/Hr from 11,977' to 11,992' & @ 6 ft/Hr from 11,992' to 11999'.. Losses down to a steady 13 Bbls / Hr. since 01:00 Hrs. 12:00 - 00:00 12.00 DRILL P PROD1 Directional drill 6 1/8" hole from 11,999' to 12,337'. 250 GPM @ 3000 psi. WOB = 5 to 10K, Torque On = 7000, Torque Off = 6400, Rot @ 60 RPM, P/U Wt. = 188K, S/O Wt. = 123K, ROT Wt =156K. Losses 13 to 15 BPH until) 2300 Hrs.- losses up to 26 BPH. Begin adding one sack of Calcium Carbonate every 10 minutes -alternating between SafeCarb 250 & 500. Survey every 30'. Rotate through every slide to log Density. 10/18/2005 00:00 - 02:30 2.50 DRILL P PROD1 Directional drill 6 1/8" hole from 12,337' to 12,425'. 250 GPM @ 3,000 psi. WOB = 5 to 10K, Torque On = 7,000, Torque Off = 6,400, Rot @ 60 RPM, P/U Wt. = 188K, S/O Wt. = 123K, ROT Wt =156K. Loss rate increased from 25 bph to 30 BPH. Adding one sack of Calcium Carbonate every 5 minutes - alternating between SafeCarb 250 & 500. Survey every 30'. Rotate through every slide to log Density. 02:30 - 06:30 4.00 DRILL P PRODi Directional drill 6 1/8" hole from 12,425' to 12,540'. 250 GPM @ 3100 psi. WOB = 5 to 10K, Torque On = 7,800, Torque Off = 6,800, Rot @ 60 RPM, P/U Wt. = 190K, S/O Wt. = 110K, ROT Wt =156K. Losses up to 36 BPH. Adding one sack of Calcium Carbonate every 5 minutes -alternating between SafeCarb 250 & 500. Survey every 30'. Rotate through every slide to log Density. 'Sag fault crossed @ 12,533' back into Kingak. Determined to drill ahead in Kingak to locate Sag River top 06:30 - 12:00 5.50 DRILL P PROD1 Directional drill 6 1J8" hole to locate Sag River top from 12,540' to 12,814'. 250 GPM @ 3130 psi. WOB = 5 to 10K, Torque On = 6,200, Torque Off = 5,600, Rot @ 60 RPM, P/U Wt. = 198K, S/O Wt. = 110K, ROT Wt =156K. AST - 1.76 hrs, ART - 3.81 hrs. Losses @ 36 BPH. Adding one sack of Calcium Carbonate every 5 minutes -alternating between SafeCarb 250 & 500. Survey every 30'. Rotate through every slide to log Density. Drilled to what may have been Sag River based on ROP break and possible Sag R sand in cuttings 12:00 - 14:30 2.50 DRILL N DPRB PROD1 Attempt to make connection. Backreamed prior to connection up to 12,729', pulled 25K over with an increase of torque to 12,000. Annulus packed off with no returns. Work pipe and establish drill string rotation, but no circulation. Work pipe from 12,729' to 12,505'. Decision made to terminate well early due to fault. 'TD L-50 Sidetrack @ 11:45 hrs 10/18/2005 14:30 - 15:30 1.00 DRILL P PROD1 Establish circulation and circulate bottoms up @ 12,505' by staging pumps to 210 gpm, 2145 psi, 65 rpm, 5,500 torque. Loss rate @ 80 bph. 15:30 - 20:30 5.00 DRILL P PROD1 Backream from 12,505' to 9,547'. 210 gpm, 1,980 psi, 65 rpm, 6,500 torque. No rotary from 9,547' to 9,206' per Directional Driller. Loss rate slowed to 31 bph. 20:30 - 22:00 1.50 DRILL P PROD1 Monitor well for 10 min. Well static. Circulate bottoms up @ 233 gpm, 1,960 psi, reciprocate and rotate @ 60 rpm. Loss rate @ 30 bph Printed: 10/24/2005 7:35:23 AM • BP EXPLORATION Page 12 of 14 Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 Spud Date: 9/29/2005 Event Name: DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 Rig Name: NABOBS 9ES Rig Number: Date !From - To Hours Task 'Code NPT Phase 'i Description of Operations -~I _ - -- -- - - - - 10/18/2005 ~ 22:00 - 22:30 I 0.50 ~ DRILL ~ P~ 22:30 - 00:00 1.50 DRILL P 10/19/2005 00:00 - 02:00 2.00 DRILL P 02:00 - 04:00 2.00 DRILL P 04:00 - 05:00 1.00 DRILL P 05:00 - 05:30 0.50 CASE P 05:30 - 09:30 4.00 CASE P 09:30 - 10:00 0.50 CASE P 10:00 - 14:30 4.50 CASE P 14:30 - 17:00 2.50 CASE P 17:00 - 18:00 I 1.001 CASE I P 18:00 - 19:30 1.50 CASE P 19:30 - 21:00 1.50 CASE N 21:00 - 00:00 3.00 CASE P 10/20/2005 00:00 - 05:30 5.50 CASE P 05:30 - 07:30 2.00 CASE P 07:30 - 08:30 1.00 CASE P 08:30 - 12:00 3.50 CASE P I PROD1 Monitor well for 10 min. Well static. Drop 2.937" ball and shear circulating sub @ 1100 psi. Pump dry job. PROD1 POH from 9,206' to 6,933'. Loss rate @ 30 bph. PROD1 POH from 6,933' to 225'. Loss rate @ 30 bph. PROD1 PJSM on nuclear source and BHA. Lay down BHA #5. PROD1 Clear rig floor of vendor tools and OBM. RUNPRD Rig up to run 4.5" 12.6# L-80 BTC slotted liner. RUNPRD PJSM. RIH with 4.5"slotted liner assembly to 3,473'. Used BOL 2000 NM, torqued IBT connections to 3,400 ftlbs, BTC connections to 3,800 ftlbs Ran total of 82 jts 4.5" 12.6# L-80 BTC slotted liner 5 jts 4.5" 12.6# L-80 IBT solid liner 87 joints total. 1 "Swell" packer, 2 solid jts up from float shoe Baker 5" x 7" HMC Liner hanger with 3 solid jts. below. Baker 5" x 7" ZXP liner top packer with i 1 ft Tieback sleeve RUNPRD Rig down casing equipment. Make up running tool, check liner weight - 75k RUNPRD RIH with 4.5" slotted liner on 4" HT-40 drill pipe from 3,473' to 9,187' @ 2 minutes per stand. Lost pipe displacement before reaching 7" casing shoe. Break and verify circulation. 2 bpm - 320 psi, 3 bpm - 475 psi. RUNPRD Continue RIH from 9,187' to 12,456' @ 35 fpm to minimize losses. No problems otherwise. RUNPRD Set liner on depth @ 12,520'. PU - 205k, SO - 146k. Drop 29/32" ball and pump down 58 bbls @ 3 bpm, 700 psi. Pump 14 bbls @ reduced pump rate of 1.5 bpm, 360 psi. Seat ball, pressure up to 4000 psi, set down 46k to set liner hanger. Pick up to set lugs to 185k. Set down 35k and set ZXP packer. Rotate 2 minutes, verify release. Pick up to 205k to close PPIT tool. Pressure up annulus to 2500 psi and test liner top packer - OK. Pressure up to 4180 to shear ball seat. FS @ 12,520' Swell Packer @ 12,407' Bottom of slotted liner @ 12,396' Top of slotted liner @ 9,219' Top of ZXP liner top pack w/ 11 ft Tieback sleeve @ 9,060' 146' of liner lap 3 centralizers, 2 stop rings RUNPRD Monitor well, pump dry job and POH laying down 4" HT-40 drill pipe from 9,060' to 8,083' MISC RUNPRD Rig crew labor dispute meeting with NAD management, Dave Hebert and Belinda Wilson. RUNPRD Continue to POH, laying down drill pipe from 8,083' to 6,062' Static mud losses @ 6 bph RUNPRD Continue POH laying down 4" HT-40 drill pipe from 6,062' to surface. Lay down liner running tool. RUNPRD RIH with 43 stands 4" HT-40 drill pipe to 4,000'. RUNPRD Cut & slip drilling line, inspect rotary brake and main brakes. Service drawworks & top drive. RUNPRD POH, laying down drill pipe from 4,000" to surface. Printed: 10/24/2005 7:35:23 AM BP EXPLORATION Page 13 of 14 Operations Summary Report Legal Well Name: Common Well Name Event Name: Contractor Name: Rig Name: L-50 L-50 Spud Date: 9/29/2005 DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 NABOBS ALASKA DRILLING I Rig Release: 10/23/2005 NABOBS 9ES Rig Number: Date From - To ~ Hours Task Code 10/20/2005 12:00 - 12:30 0.50 CASE P 12:30 - 13:00 0.50 BUNCO 13:00 - 13:30 0.50 BUNCO 13:30 - 00:00 10.50 BUNCO 10/21/2005 00:00 - 03:00 3.00 BUNCO NPT Phase I' Description of Operations RUNPRD Clean and clear rig floor. RUNCMP Pull wear bushing, make dummy run with tubing hanger. RUNCMP Rig up to run 3.5" completion assembly. RUNCMP RIH with 3.5" 9.2# L-80 IBT-M completion assembly. Baker Lok tail pipe assembly below Baker 'S-3' packer. Make up torque - 3,200 ft/Ibs. Used Best 0 Life 2000NM thread lubricant. RUNCMP Continue RIH with 3.5" completion string from 7,049' to bottom of tie back sleeve @ 9,067'. Tagged 4' high 03:00 - 04:00 1.00 BUNCO RUNCMP Space out tubing and land same. WLEG 4' inside of tie back sleeve Ran 281 joints of 3.5" 9.2# L-80 IBT-M tubing, (2) 3.5" 9.2# L-80 IBT-M space out pups. 3.5" WLEG: 2.905" ID - 9060' 3.5" HES 'X' Nipple: 2.813" ID - 9036' 3.5" HES 'X' Nipple: 2.813" ID w/PX Plug - 9015' 7" X 4.5" Baker 'S-3' Hyd. Set Packer - 8990' 3.5" HES 'X' Nipple: 2.813" ID - 8968' GLM #1 - 3.5" X 1.5" MMG w/DCR-1 Shear & RKP Latch - 8814' GLM #2 - 3.5" X 1.5" MMG-W w/Dummy & RK latch - 7890' GLM #3 - 3.5" X 1.5" MMG-W w/Dummy & RK latch - 6995' GLM #4 - 3.5" X 1.5" MMG-W w/Dummy & RK latch - 6114' GLM #5 - 3.5" X 1.5" MMG-W w/Dummy & RK latch - 5222' GLM #6 - 3.5" X 1.5" MMG-W w/Dummy & RK latch - 4209' GLM #7 - 3.5" X 1.5" MMG-W wfDummy & RK latch - 2392' 3.5" HES 'X' Nipple: 2.813" ID - 2000' FMC 4.5" Tbg. Hanger (4.5" TC-II Lift Threads) 04:00 - 10:00 6.00 BUNCO RUNCMP PJSM w/ SLB slick line. Rig up slick line lubricator, pump in sub on landing joint. RU slick line. 10:00 - 15:00 5.00 BUNCO RUNCMP Slick line run #1: RIH with 1 3/4" PX prong, attempt to set plug @ 9,015'. POH, prong still attached. 15:00 - 21:30 6.50 BUNCO RUNCMP Slick line run #2: Drop 1 3/4" PX prong. RIH with 2.95" gauge ring, spangler jars, oil jars and roller sinker bars. Beat PX prong down with GR assy. POH, stand back lubricator. 21:30 - 23:00 1.50 BUNCO RUNCMP Set Baker 'S-3' packer with 3,500 psi. Hold pressure for tubing test - 30 min - 90 psi loss. Bleed pressure down to 2,500 psi. Pressure test tubing annulus and packer to 3,500 psi - 30 min - i 00 psi loss. Bleed annulus pressure to 0 psi, bleed tubing pressure to 0 psi. 23:00 - 00:00 1.00 BUNCO . RUNCMP Rig up SLB slick line to pull DCR shear valve @ 8,814' 10/22/2005 00:00 - 03:00 3.00 BUNCO RUNCMP Slick line run #3: RIH to pull DCR shear valve @ 8,814'. Attempt to pull valve. POH without valve. Change out pulling tool. 03:00 - 07:30 4.50 BUNCO RUNCMP Slick line run #4: RIH to pull DCR shear valve @ 8,814'. POH with valve. Rig down slick line. 07:30 - 08:00 0.50 BUNCO RUNCMP Set 2-way-check in tubing hanger. Test from below to 1000 psi - OK. 08:00 - 10:00 2.00 WHSUR P WHDTRE Remove long bails. Clean and service top drive. Clean OBM from rig floor and BOPE. Printed: 10/24/2005 7:35:23 AM BP EXPLORATION Page 14 of 14 Operations Summary Report Legal Well Name: L-50 Common Well Name: L-50 .Spud Date: 9/29/2005 Event Name: DRILL+COMPLETE Start: 9/28/2005 End: 10/23/2005 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 10/23/2005 Rig Name: NABORS 9ES Rig Number: Date I From - To Hours ', Task Cod e', NPT Phase Description of Operations 10/22/2005 10:00 - 12:00 2.00 WHSUR P WHDTRE Nipple down BOPE, remove mouse hole. 12:00 - 15:00 3.00 WHSUR P WHDTRE Nipple up tree adapter and tree. Test metal to metal hanger seal to 5000 psi - 10 min - OK. Test adaptor and tree to 5000 psi. OK. 15:00 - 15:30 0.50 WHSUR P WHDTRE Rig up DSM lubricator. Pull 2-way-check 15:30 - 16:00 0.50 WHSUR P WHDTRE PJSM. Rig up circulating lines to tree. 16:00 - 19:00 3.00 WHSUR P WHDTRE Displace OBM to seawater by reverse circulating 30 bbls LVT (mineral oil), 50 bbls seawater treated with Safesurf-O (soap), 450 bbls clean seawater, and 50 bbls corrosion inhibited seawater. Pumped @ICP - 1100 psi - 4 bpm. FCP - 500 psi - 5 bpm. 19:00 - 21:30 2.50 WHSUR P WHDTRE PJSM with LRHOS. Freeze protect well by reverse circulating 81 bbls of 75 deg diesel. Pumped @ICP - 200 psi - 1 bpm. FCP 450 psi - 2 bpm. SIP - 350 psi. U-tube diesel to tubing. SIP - 100 psi. 21:30 - 00:00 2.50 WHSUR P WHDTRE Install BPV with DSM lubricator. Test to 1000 psi from below - OK. Remove double annulus valves, install VR plugs in IA & OA. Rig down LRHOS &DSM. Secure tree for rig move to L-250. Secure Diverter BOP in cellar. Continue clean OBM from mud pits. (Started C~ 21:30 hrs). 10/23/2005 00:00 - 06:00 6.00 WHSUR WHDTRE Continue clean OBM from mud pits. Bottom of the pits were clogged with LCM. Release rig for move to L-250 C~J 06:00 hr 10/23/2005 Printed: 10/24/2005 7:35:23 AM L-50PB1 Su Client: BP Exploration Alaska Field: Prudhoe Bay Unit - WOA Structure I Slot: L-PAD / S-D well: L-50 Borehole: L-50P61 UWVAPI#: 500292327770 Survey Name /Date: L-50PB1 /October 17, 2005 Tort IAHD / DDI / ERD ratio: 270.996° / 5342.35 ft / 6.324 / 0.616 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location LaUlong: N 70 21 0.216, W 14919 31.563 Location Grid N/E Y/X: N 5978070.340 ftUS, E 583086.840 ftUS Grid Convergence Angle: +0.63528569° Grid Scale Factor: 0.99990784 Report ~;~~u~~'"~~~~~ Vertical Section Azimuth: 103.300° Vertical Section Origin: N 0.000 ft, E 0.000 ft TVD Reference Datum: Rotary Table TVD Reference Elevation: 76.30 ft relative to MSL Sea Bed /Ground Level Elevation: 47.80 ft relative to MSL Magnetic Declination: 24.462° Total Field Strength: 57576.290 nT Magnetic Dip: 80.846° Declination Date: October 03, 2005 Magnetic Declination Model: BGGM 2005 North Reference: True North Total Corr Mag North -> True North: +24.462° Local Coordinates Referenced To: Well Head Comments Measured Inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de h ft ft ft ft ft ft de 100 ft ftUS ftUS Hlt U.VU U.UV U.UU -/b.3V U.UU U.UU V.UU U.VV V.UU V.VV V.VV by/t3V/V.34 b233V25b.254 IV /VYl V.GIb VV 14y 1y31.bbJ First GYD GC SS 100.00 0.30 289.54 23.70 100.00 -0.26 0.26 0.26 0.09 -0.25 0.30 5978070.42 583086.59 N 70 21 0.217 W 149 19 31.570 200.00 0.32 320.67 123.70 200.00 -0.74 0.79 0.78 0.39 -0.67 0.17 5978070.72 583086.17 N 70 21 0.220 W 149 19 31.582 300.00 0.50 297.17 223.70 300.00 -1.39 1.50 1.48 0.81 -1.24 0.24 5978071.13 583085.60 N 70 21 0.224 W 149 19 31.599 400.00 0.43 286.18 323.69 399.99 -2.19 2.30 2.27 1.11 -1.98 0.11 5978071.43 583084.84 N 70 21 0.227 W 149 19 31.621 500.00 0.94 189.73 423.69 499.99 -2.51 3.28 2.52 0.41 -2.48 1.08 5978070.72 583084.35 N 70 21 0.220 W 149 19 31.635 600.00 1.23 181.26 523.67 599.97 -2.24 5.17 3.03 -1.48 -2.65 0.33 5978068.84 583084.21 N 70 21 0.202 W 149 19 31.640 700.00 1.07 185.17 623.65 699.95 -1.88 7.17 4.44 -3.48 -2.75 0.18 5978066.83 583084.13 N 70 21 0.182 W 149 19 31.643 Last GYD GC SS 800.00 0.77 181.04 723.64 799.94 -1.60 8.78 5.82 -5.08 -2.85 0.31 5978065.23 583084.05 N 70 21 0.166 W 149 19 31.646 Last GYD GC SS 900.00 0.88 190.06 823.63 899.93 -1.42 10.21 7.16 -6.51 -3.00 0.17 5978063.80 583083.92 N 70 21 0.152 W 149 19 31.650 First MWD+IFR+MS 945.18 1.09 197.08 868.80 945.10 -1.43 10.99 7.93 -7.26 -3.18 0.54 5978063.05 583083.74 N 70 21 0.145 W 149 6 1039.41 1.27 201.69 963.01 1039.31 -1.64 12.93 9.86 -9.09 -3.83 0.22 5978061.21 583083.11 N 70 21 1 0.127 W 149 1 5 1133.72 1.23 185.83 1057.30 1133.60 -1.66 14.97 11.88 -11.07 -4.32 0.37 5978059.23 583082.64 N 70 21 0.107 W 149 19 9 1226:68 0.53 118.00 1150.25 1226.55 -1.11 16.26 12.91 -12.26 -4.04 1.23 5978058.04 583082.93 N 70 21 0.096 W 149 19 31.681 1320.78 0.69 107.88 1244.34 1320.64 -0.13 17.26 13.02 -12.64 -3.12 0.20 5978057.67 583083.86 N 70 21 0.092 W 149 19 31.654 1413.98 0.80 90.14 1337.53 1413.83 1.06 18.47 12.96 -12.81 -1.93 0.27 5978057.51 583085.05 N 70 21 0.090 W 14919 31.619 1507.43 1.60 8.48 1430.97 1507.27 1.59 20.14 11.57 -11.52 -1.09 1.80 5978058.81 583085.88 N 70 21 0.103 W 149 19 31.595 1599.25 1.66 5.30 1522.75 1599.05 1.30 22.75 8.96 -8.93 -0.78 0.12 5978061.40 583086.16 N 70 21 0.128 W 149 19 31.585 1693.74 1.68 10.81 1617.20 1693.50 1.05 25.51 6.22 -6.21 -0.39 0.17 5978064.13 583086.52 N 70 21 0.155 W 149 19 31.574 1787.52 1.64 14.04 1710.94 1787.24 1.00 28.22 3.56 -3.56 0.19 0.11 5978066.79 583087.07 N 70 21 0.181 W 149 19 31.557 1880.60 1.53 6.04 1803.99 1880.29 0.86 30.79 1.21 -1.03 0.65 0.27 5978069:32 583087.50 N 70 21 0.206 W 149 19 31.544 1974.52 0.94 249.19 1897.89 1974.19 0.07 32.25 0.08 -0.05 0.06 2.26 5978070.29 583086.90 N 70 21 0.216 W 149 19 31.561 2067.28 0.68 241.45 1990.64 2066.94 -0.97 33.56 1.2$ -0.59 -1.14 0.30 5978069.74 583085.71 N 70 21 0.210 W 149 19 31.596 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50P61\L-50P61 Generated 11/22/2005 2:33 PM Page 1 of 6 Measured Vertical Along Hole Comments Inclination Azimuth Sub-Sea ND TVD Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de h ft ft ft ft ft ft de 100 ft ftUS ftUS Z1 tlU.4U U.b/ L:iU.U/ "CUiS:i./6 "L1t7U.Ut7 -1./1 ~4.6b L.3I -I.ZU -Z.U4 U.14 b`J/tSU6y.1G btS3U254.tt1 N /U Ll V.LV4 VV 14y ly 31.6Z"L 2254.67 0.52 66.96 2178.03 2254.33 -1.69 35.17 2.49 -1.39 -2.07 1.25 5978068.93 583084,79 N 70 21 0.202 W 149 19 31.623 2348.15 0.80 71.67 2271.50 2347.80 -0.80 36.25 1.47 -1.02 -1.06 0.30 5978069.31 583085.79 N 70 21 0.206 W 149 19 31.594 2440.98 0.69 75.59 2364.32 2440.62 0.25 37.46 0.68 -0.67 0.10 0.13 5978069.67 583086.94 N 70 21 0.210 W 149 19 31.560 2524.51 0.73 67.87 2447.85 2524.15 1.13 38.49 1.13 -0.35 1.08 0.12 5978070.00 583087.92 N 70 21 0.213 W 149 19 31.531 2629.34 0.59 75.13 2552.67 2628.97 2.15 39.70 2.22 0.04 2.22 0.16 5978070.41 583089.06 N 70 21 0.217 W 149 19 31.498 2723.23 0.45 263.88 2646.56 2722.86 2.23 40.14 2.32 0.13 2.32 1.10 5978070.49 583089.16 N 70 21 0.217 W 149 19 31.495 2816.93 0.62 252.44 2740.25 2816.55 1.44 41.01 1.47 -0.07 1.47 0.21 5978070.29 583088.31 N 70 21 0.215 W 149 19 31.520 2909.70 0.69 241.55 2833.02 2909.32 0.60 42.07 0.69 -0.48 0.50 0.15 5978069.86 583087.34 N 70 21 0.211 W 149 19 31.548 3003.84 0.72 244.12 2927.15 3003.45 -0.28 43.22 1.14 -1.01 -0.53 0.05 5978069.32 583086.32 N 70 21 0.206 W 149 19 31.578 3097.53 0.84 237.36 3020.83 3097.13 -1.22 44.50 2.32 -1.64 -1.64 0.16 5978068.68 583085.22 N 70 21 0.200 W 149 19 3 11 3190.89 0.79 234.66 3114.18 3190.48 -2.12 45.83 3.63 -2.38 -2.74 0.07 5978067.93 583084.13 N 70 21 0.193 W 149 19 3284.37 0.12 168.89 3207.66 3283.96 -2.50 46.53 4.32 -2.85 -325 0.80 5978067.46 583083.62 N 70 21 0.188 W 149 19 31.658 3377.89 0.24 79.57 3301.18 3377.48 -2.29 46.77 4.20 -2.91 -3.04 0.29 5978067.40 583083.84 N 70 21 0.188 W 149 19 31.651 3472.08 0.04 96.98 3395.37 3471.67 -2.07 47.00 4.02 -2.88 -2.81 0.21 5978067.43 583084.06 N 70 21 0.188 W 149 19 31.645 3566.04 0.00 118.54 3489.33 3565.63 -2.04 47.03 4.00 -2.88 -2.78 0.04 5978067.43 583084.10 N 70 21 0.188 W 149 19 31.644 3659.84 0.20 7.63 3583.13 3659.43 -2.06 47.20 3.87 -2.72 -2.75 0.21 5978067.59 583084.12 N 70 21 0.189 W 149 19 31.643 3753.00 0:22 11.05 3676.29 3752.59 -2.08 47.54 3.60 -2.38 -2.70 0.03 5978067.93 583084.17 N 70 21 0.193 W 149 19 31.642 3846.88 0.09 13.88 3770.17 3846.47 -2.08 47.79 3.40 -2.13 -2.65 0.14 5978068.18 583084.22 N 70 21 0.195 W 149 19 31.640 3938.33 1.56 198.82 3861.61 3937.91 -2.20 48.97 4.44 -3.24 -3.03 1.80 5978067.06 583083.85 N 70 21 0.184 W 149 19 31.651 4031.69 4.35 197.88 3954.83 4031.13 -2.61 53.79 9.03 -7.82 -4.53 2.99 5978062.47 583082.40 N 70 21 0.139 W 149 19 31.695 4125.72 7.55 197.92 4048.34 4124.64 -3.39 63.53 18.67 -17.09 -7.52 3.40 5978053.17 583079.51 N 70 21 0.048 W 149 19 31.783 4219.37 10.35 200.28 4140.85 4217.15 -4.91 78.10 33.21 -30.84 -12.33 3.01 5978039.37 583074.85 N 70 20 59.913 W 149 19 31.923 4311.23 11.00 201.17 4231.11 4307.41 -7.11 95.11 50.23 -46.75 -18.36 0.73 5978023.39 583069.00 N 70 20 59.756 W 149 19 32.099 4405.76 10.90 200.94 4323.92 4400.22 -9.54 113.07 68.18 -63.51 -24.81 0.12 5978006.57 583062.74 N 70 20 59.592 W 149 19 32.288 4498.72 11.16 204.59 4415.17 4491.47 -12.47 130.85 85.95 -79.90 -31.70 0.80 5977990.10 583056.04 N 70 20 59.430 W 149 19 32.489 4592.18 11.12 207.26 4506.87 4583.17 -16.41 148.90 103.97 -96.13 -39.59 0.55 5977973.78 583048.32 N 70 20 59.271 W 149 19 32.720 4685.37 11.11 206.04 4598.31 4674.61 -20.56 166.87 121.89 -112.19 -47.65 0.25 5977957.64 583040.45 N 70 20 59.113 W 149 19 32.955 4779.33 10.33 212.04 4690.63 4766.93 -25.26 184.33 139.26 -127.46 -56.09 1.45 5977942.27 583032.17 N 70 20 58.963 W 149 1 2 4872.60 10.34 211.82 4782.39 4858.69 -30.61 201.06 155.84 -141.67 -64.94 0.04 5977927.98 583023.48 N 70 20 58.823 W 149 1 0 4965.96 10.12 211.24 4874.26 4950.56 -35.79 217.64 172.31 -155.80 -73.61 0.26 5977913.75 583014.97 N 70 20 58.684 W 149 19 33.714 5058.95 10.02 209.17 4965.82 5042.12 -40.52 233.90 188.51 -169.85 -81.79 0.40 5977899.61 583006.95 N 70 20 58.546 W 149 19 33.953 5152.59 9.83 209.96 5058.06 5134.36 -45.04 250.04 204.62 -183.88 -89.75 0.25 5977885.49 582999.14 N 70 20 58.408 W 149 19 34.186 5251.95 9.71 209.56 5155.98 5232.28 -49.82 266.90 221.45 -198.52 -98.12 0.14 5977870.76 582990.93 N 70 20 58.264 W 149 19 34.430 5344.96 9.77 206.74 5247.65 5323.95 -53.85 282.63 237.17 -212.39 -105.54 0.52 5977856.81 582983.67 N 70 20 58.127 W 149 19 34.647 5437.92 9.27 205.30 5339.33 5415.63 -57.24 298.01 252.54 -22621 -112.29 0.60 5977842.92 582977.07 N 70 20 57.991 W 149 19 34.844 5531.97 9.84 208.36 5432.07 5508.37 -60.90 313.62 268.15 -240.13 -119.35 0.81 5977828.93 582970.18 N 70 20 57.855 W 149 19 35.050 5624.85 9.43 209.65 5523.64 5599.94 -65.11 329.16 283.68 -253.72 -126.88 0.50 597781525. 582962.79 N 70 20 57.721 VV 149 19 35.271 5718.24 9.80 208.89 5615.72 5692.02 -69.40 344.76 299.26 -267.33 -134.50 0.42 5977801.56 582955.32 N 70 20 57.587 W 149 19 35.493 5812.02 10.14 208.43 5708.09 5784.39 -73.70 361.00 315.49 -281.58 -14229 0.37 5977787.23 582947.69 N 70 20 57.447 W 149 19 35.721 5905.57 9.45 207.24 5800.27 5876.57 -77.70 376.91 331.40 -295.65 -149.73 0.77 5977773.08 582940.41 N 70 20 57.308 W 149 19 35.938 SurveyEditor Ver SP 1.0 Bld( doc4Ox_56) S-D\L-50\L-5OP61\L-5OPB1 Generated 11/22/2005 2:33 PM Page 2 of 6 Measured Vertical Along Hole Comments Inclination Azimuth Sub-Sea ND ND Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS 5yy23.41 lU.b3 LUti.4y 52iy1.'oy 5yti/.yy -231 .4y ;sy~.uy :54/.521 -;i1U.Uy -15/.U:i 1.Li5 5y///523 .5b 523Cyi:S."L/ IV /V "LU 5/.1b5 VV 14y ly:i5.15"L 6091.68 10.95 208.39 5983.31 6059.61 -85.76 410.55 365.04 -325.58 -165.08 0.51 5977742 .98 582925.39 N 70 20 57.014 W 149 19 36.387 6184.66 11.20 212.49 6074.56 6150.86 -91.02 428.41 382.86 -340.97 -174.13 0.89 5977727 .50 582916.51 N 70 20 56.863 W 149 19 36.651 6276.68 10.73 215.16 6164.90 6241.20 -97.15 445.91 400.24 -355.51 -183.87 0.75 5977712 .85 582906.94 N 70 20 56.720 W 149 19 36.936 6369.91 10.43 214.71 6256.54 6332.84 -103.46 463.03 417.21 -369.54 -193.67 0.33 5977698 .71 582897.30 N 70 20 56.582 W 149 19 37.222 6462.74 9.82 213.12 6347.93 6424.23 -109.21 479.34 433.44 -383.08 -202.78 0.72 5977685 .07 582888.34 N 70 20 56.449 W 149 19 37.489 6556.58 9.72 210.20 6440.41 6516.71 -114.23 495.26 449.32 -396.63 -211.14 0.54 5977671 .43 582880.13 N 70 20 56.315 W 149 19 37.733 6651.13 9.36 207.64 6533.65 6609.95 -118.45 510.93 464.99 -410.34 -218.72 0.59 5977657 .64 582872.70 N 70 20 56.180 W 149 19 37.954 6744.54 9.30 196.35 6625.83 6702.13 -120.74 526.03 479.98 -424.31 -224.37 1.96 5977643 .61 582867.21 N 70 20 56.043 W 149 19 38.119 6838.16 9.96 170.22 6718.18 6794.48 -117.96 541.43 493.85 -439.55 -225.12 4.68 5977628 .36 582866.63 N 70 20 55.893 W 149 19 38.141 6931.76 11.11 152.62 6810.22 6886.52 -108.91 558.41 505.71 -455.54 -219.60 3.63 5977612 .43 582872.33 N 70 20 55.736 W 149 19 37 80 7024.23 11.68 138.50 6900.89 6977.19 -95.45 576.59 514.92 -470.47 -209.30 3.07 5977597 .62 582882.79 N 70 20 55.589 W 149 19 7117.64 13.64 119.76 6992.06 7068.36 -77.15 596.89 520.33 -483.02 -193.46 4.84 5977585 .25 582898.76 N 70 20 55.466 W 149 19 37.216 7210.61 16.06 110.91 7081.93 7158.23 -53.89 620.67 522.17 -493.06 -171.93 3.56 5977575 .45 582920.41 N 70 20 55.367 W 149 19 36.587 7303.59 19.51 106.72 7170.46 7246.76 -25.63 649.06 522.64 -502.12 -145.03 3.96 5977566 .69 582947.40 N 70 20 55.278 W 149 i9 35.801 7397.40 23.59 106.19 7257.69 7333.99 8.77 683.51 523.97 -511.86 -111.99 4.35 5977557 .32 582980.54 N 70 20 55.182 W 149 19 34.835 7491.76 27.19 106.68 7342.92 7419.22 49.16 723.96 528.41 -523.32 -73.19 3.82 5977546 .29 583019.46 N 70 20 55.069 W 149 19 33.702 7584.04 30.04 107.84 7423.92 7500.22 93.24 768.15 537.34 -536.45 -31.00 3.15 5977533. 63 583061.79 N 70 20 54.940 W 149 19 32.469 7678.55 33.74 106.31 7504.16 7580.46 143.05 818.07 551.33 -551.07 16.72 4.01 5977519. 54 583109.67 N 70 20 54.796 W 149 19 31.074 7772.02 36.48 103.85 7580.62 7656.92 196.77 871.81 569.17 -565.02 68.63 3.30 5977506. 17 583161.72 N 70 20 54.659 W 149 19 29.557 7865.72 40.48 101.04 7653.96 7730:26 255.04 930.10 591.00 -577.51 125.55 4.66 5977494. 31 583218.77 N 70 20 54.536 W 149 19 27.894 7957.61 43.89 101.16 7722.04 7798.34 316.69 991.80 618.08 -589.39 186.09 3.71 5977483 .10 583279.44 N 70 20 54.419 W 149 19 26.125 8051.49 46.85 100.65 7787.98 7864.28 383.44 1058.60 652.52 -602.03 251.69 3.18 5977471. 20 583345.17 N 70 20 54.295 W 149 19 24.208 8145.00 46.24 100.43 7852.30 7928.60 451.24 1126.48 692.05 -614.44 318.43 0.67 5977459. 52 583412.03 N 70 20 54.173 W 149 19 22.258 8238.36 45.49 99.53 7917.31 7993.61 518.13 1193.48 734.66 -626.06 384.42 1.06 5977448. 64 583478.14 N 70 20 54.059 W 149 19 20.329 8330.95 44.83 98.34 7982.60 8058.90 583.59 1259.14 778.89 -636.26 449.27 1.16 5977439. 16 583543.09 N 70 20 53.958 W 149 19 18.434 8425.65 45.84 98.74 8049.17 8125.47 650.71 1326.49 826.91 -646.26 515.87 1.11 5977429. 90 583609.80 N 70 20 53.860 W 149 19 16.488 8518.07 45.70 98.58 8113.63 8189.93 716.72 1392.71 876.70 -656.23 581.34 0.20 5977420. 65 583675.37 N 70 20 53.762 W 149 19 14.575 8611.81 44.96 97.95 8179.53 8255.83 783.12 1459.37 928.62 -665.82 647.31 0.92 5977411. 80 583741.43 N 70 20 53.668 W 149 1 7 8705.83 45.59 99.75 8245.70 8322.00 849.72 1526.17 982.81 -676.10 713.31 1.52 5977402 .25 583807.54 N 70 20 53.566 W 149 1 9 8798.96 46.70 99.62 8310.22 8386.52 916.74 1593.33 1039.30 -687.40 779.51 1.20 5977391. 69 583873.85 N 70 20 53.455 W 14919 .784 8891.57 49.54 101.37 8372.04 8448.34 985.60 1662.27 1099.03 -699.98 847.29 3.37 5977379. 86 583941.76 N 70 20 53.331 W 149 19 6.804 8984.90 54.06 101.81 8429.74 8506.04 1058.89 1735.60 1164.30 -714.72 919.12 4.86 5977365. 92 584013.74 N 70 20 53.186 W 149 19 4.705 9077.94 58.50 103.53 8481.38 8557.68 1136.25 1812.96 1234.76 -731.72 994.59 5.01 5977349. 76 584089.39 N 70 20 53.019 W 149 19 2.499 MWD+IFR+MS 9141.12 61.74 102.14 8512.85 8589.15 1191.02 1867.73 1285.16 -743.87 1048.00 5.47 5977338. 20 584142.92 N 70 20 52.900 W 149 19 0.939 Blind Drill Out 9210.57 66.90 100.89 8542.94 8619.24 1253.55 1930.30 1342.62 -756.35 1109.31 7.60 5977326. 41 584204.36 N 70 20 52.777 W 149 18 59.147 Blind (Inc Only) 9229.83 71.66 100.55 8549.75 8626.05 1271.54 1948.31 1359.15 -759.70 1127.00 24.77 5977323 .26 584222.09 N 70 20 52.744 W 149 18 58.630 Blind (Inc Only) 9239.97 74.27 100.36 8552.72 8629.02 1281.23 1958.01 1368.04 -761.46 1136.54 25.80 5977321. 60 584231.64 N 70 20 52.726 W 149 18 58.352 MWD+IFR+MS 9273.09 81.65 99.77 8559.63 8635.93 1313.54 1990.38 1397.73 -767.11 1168.41 22.35 5977316. 30 584263.57 N 70 20 52.671 W 149 18 57.420 9308.62 85.02 97.62 8563.75 8640.05 1348.71 2025.66 1429.88 -772.44 1203.29 11.23 5977311. 36 584298.50 N 70 20 52.618 W 149 18 56.401 9339.20 84.26 98.83 8566.61 8642.91 1379.04 2056.11 1457.65 -776.80 1233.42 4.66 5977307. 34 584328.68 N 70 20 52.575 W 14918 55.521 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50PB1\L-50P61 Generated 11/22/2005 2:33 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 ft ft de 100 ft ftUS ftUS 9370.87 83.20 101.30 8570.07 8646.37 1410.47 2087.59 1486.85 -782.30 1264.41 8.44 5977302.18 584359.73 N 70 20 52.521 W 149 18 54.615 9402.70 84.58 104.13 8573.46 8649.76 1442.11 2119.23 1516.80 -789.26 1295.28 9.85 5977295.56 584390.67 N 70 20 52.453 W 14918 53.713 9432.79 87.60 103.60 8575.51 8651.81 1472.12 2149.25 1545.46 -796.46 1324.42 10.19 5977288.69 584419.89 N 70 20 52.382 W 149 18 52.862 9465.44 90.07 104.37 8576.17 8652.47 1504.76 2181.89 1576.69 -804.35 1356.10 7.92 5977281.15 584451.64 N 70 20 52.304 W 149 18 51.936 9495.29 92.85 104.63 8575.41 8651.71 1534.59 2211.73 1605.37 -811.82 1384.98 9.35 5977274.01 584480.61 N 70 20 52.231 W 149 18 51.092 9527.02 93.60 103.93 8573.63 8649.93 1566.27 2243.41 1635.83 -819.63 1415.68 3.23 5977266.53 584511.39 N 70 20 52.154 W 149 18 50.195 9558.41 93.77 102.54 8571.61 8647.91 1597.59 2274.73 1665.84 -826.80 1446.18 4.45 5977259.70 584541.96 N 70 20 52.083 W 149 18 49.304 9588.96 93.70 99.65 8569.62 8645.92 1628.05 2305.22 1694.75 -832.67 1476.09 9.44 5977254.17 584571.93 N 70 20 52.026 W 149 18 48.430 9620.87 92.91 98.16 8567.78 8644.08 1659.81 2337.08 1724.62 -837.60 1507.56 5.28 5977249.59 584603.45 N 70 20 51.977 W 149 18 47.510 9651.38 92.92 97.34 8566.23 8642.53 1690.14 2367.55 1753.04 -841.71 1537.75 2.68 5977245.81 584633.68 N 70 20 51.937 W 149 18 46.628 9682.58 90.89 97.07 8565.19 8641.49 1721.15 2398.73 1782.09 -845.62 1568.69 6.56 5977242.25 584664.66 N 70 20 51.898 W 14918 9713.23 89.76 97.51 8565.02 8641.32 1751.63 2429.38 1810.73 -849.51 1599.09 3.96 5977238.69 584695.10 N 70 20 51.860 W 149 18 9744.89 90.00 98.95 8565.08 8641.38 1783.16 2461.04 1840.56 -854.04 1630.42 4.61 5977234.51 584726.47 N 70 20 51.815 W 149 18 43.920 9775.84 89.52 98.63 8565.21 8641.51 1814.02 2491.99 1869.87 -858.77 1661.01 1.86 5977230.12 584757.11 N 70 20 51.768 W 149 18 43.027 9806.28 89.45 98.75 8565.48 8641.78 1844.36 2522.42 1898.74 -863.37 1691.10 0.46 5977225.86 584787.24 N 70 20 51.723 W 149 18 42.148 9837.91 89.25 98.13 8565.84 8642.14 1875.87 2554.05 1928.74 -868.01 1722.38 2.06 5977221.56 584818.58 N 70 20 51.677 W 149 18 41.233 9869.33 88.59 97.80 8566.44 8642.74 1907.15 2585.47 1958.51 -872.36 1753.49 2.35 5977217.55 584849.73 N 70 20 51.635 W 149 18 40.324 9900.22 88.22 97.71 8567.30 8643.60 1937.88 2616.34 1987.78 -876.53 1784.09 1.23 5977213.73 584880.37 N 70 20 51.594 W 149 18 39.430 9931.70 88.29 96.66 8568.25 8644.55 1969.17 2647.81 2017.56 -880.46 1815.31 3.34 5977210.14 584911.62 N 70 20 51.555 W 149 18 38.518 9961.17 88.11 96.08 8569.18 8645.48 1998.41 2677.27 2045.35 -883.73 1844.58 2.06 5977207.20 584940.93 N 70 20 51.523 W 149 18 37.663 9992.58 87.98 95.96 8570.25 8646.55 2029.55 2708.66 2074.95 -887.02 1875.80 0.56 5977204.25 584972.18 N 70 20 51.490 W 14918 36.751 10022.35 86.50 96.22 8571.68 8647.98 2059.05 2738.39 2103.05 -890.18 1905.36 5.05 5977201.42 585001.78 N 70 20 51.459 W 149 18 35.887 10053.54 85.68 96.12 8573.81 8650.11 2089.92 2769.51 2132.52 -893.52 1936.30 2.65 5977198.42 585032.75 N 70 20 51.426 W 149 18 34.983 10084.38 85.85 96.63 8576.09 8652.39 2120.45 2800.26 2161.73 -896.94 1966.87 1.74 5977195.35 585063.34 N 70 20 51.392 W 149 18 34.090 10115.60 88.01 96.44 8577.76 8654.06 2151.41 2831.44 2191.40 -900.49 1997.84 6.95 5977192.14 585094.35 N 70 20 51.357 W 149 18 33.185 10147.03 89.11 96.53 8578.55 8654.85 2182.61 2862.86 2221.34 -904.04 2029.06 3.51 5977188.94 585125.60 N 70 20 51.322 W 149 18 32.272 10179.13 89.04 96.41 8579.07 8655.37 2214.48 2894.95 2251.96 -907.65 2060.95 0.43 5977185.68 585157.53 N 70 20 51.287 W 149 18 31.341 10209.38 88.94 96.16 8579.60 8655.90 2244.49 2925.20 2280.83 -910.96 2091.01 0.89 5977182.70 585187.62 N 70 20 51.254 W 149 18 30.462 10240.10 88.87 94.62 8580.19 8656.49 2274.92 2955.91 2310.03 -913.85 2121.59 5.02 5977180.16 585218.23 N 70 20 51.226 W 149 1 9 10271.62 88.90 95.51 8580.80 8657.10 2306.10 2987.43 2339.99 -916.63 2152.98 2.82 5977177.72 585249.65 ~ N 70 20 51.198 W 149 1 1 10302.23 89.38 94.89 8581.26 8657.56 2336.41 3018.03 2369.14 -919.40 2183.46 2.56 5977175.29 585280.15 N 70 20 51.171 W 149 18 27.761 10333.71 89.38 93.63 8581.60 8657.90 2367.49 3049.51 2398.99 -921.74 2214.85 4.00 5977173.30 585311.56 N 70 20 51.148 W 149 18 26.843 10365.23 88.87 93.71 8582.08 8658.38 2398.56 3081.03 2428.83 -923.76 2246.30 1.64 5977171.63 585343.03 N 70 20 51.128 W 149 18 25.924 10396.46 89.62 94.01 8582.50 8658.80 2429.37 3112.25 2458.46 -925.86 2277.46 2.59 5977169.87 585374.21 N 70 20 51.107 W 149 18 25.014 10427.45 92.02 96.10 8582.05 8658.35 2460.03 3143.24 2488.10 -928.59 2308.32 10.27 5977167.48 585405.10 N 70 20 51.080 W 149 18 24.112 10459.59 92.84 95.11 8580.69 8656.99 2491.85 3175.35 2518.93 -931.73 2340.28 4.00 5977164.70 585437.08 N 70 20 51.049 W 149 18 23.179 10490.18 92.81 94.42 8579.18 8655.48 2522.07 3205.90 2548.17 -934.27 2370.72 2.26 5977162.50 585467.55 N 70 20 51.024 W 149 18 22.289 10521.24 91.37 92.64 8578.05 8654.35 2552.65 3236.94 2577.71 -936.18 2401.70 7.37 5977160.94 585498.55 N 70 20 51.005 W 14918 21.384 10552.32 89.79 91.54 8577.73 8654.03 2583.14 3268.02 2607.08 -937.31 2432.76 6.19 5977160.15 585529.61 N 70 20 50.994 W 149 18 20.476 10584.15 89.69 91.89 8577.88 8654.18 2614.32 3299.85 2637.13 -938.26 2464.57 1.14 5977159.55 585561.43 N 70 20 50.984 W 149 18 19.547 SurveyEditor Ver SP 1.0 Bld( doc4Ox_56) S-D\L-50\L-5OP61\L-5OPB1 Generated 11/22/2005 2:33 PM Page 4 of 6 Comments Measured Inclination Azimuth Sub-Sea ND TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS 10i315.U9 10645.62 10677.17 10708.21 10740.30 10771.80 10801.70 10833.25 10864.28 10895.30 89.14 92.39 8578.19 8654.49 Z(i44.(i/ 3330./9 2tiEi(i.45 -939.4L L495.49 L.4U 59//158./3 58559L.3(i N /ULU 5U.9/3 W 1491818.(143 88.63 92.30 8578.79 8655.09 2674.64 3361.31 2695.45 -940.67 2525.99 1.70 5977157.82 585622.87 N 70 20 50.961 W 149 18 17.752 87.36 93.31 8579.89 8656.19 2705.64 3392.84 2725.52 -942.21 2557.48 5.14 5977156.63 585654.37 N 70 20 50.945 W 149 18 16.832 87.09 93.15 8581.40 8657.70 2736.17 3423.84 2755.19 -943.96 2588.44 1.01 5977155.23 585685.34 N 70 20 50.928 W 149 18 15.927 86.29 93.00 8583.25 8659.55 2767.69 3455.88 2785.84 -945.68 2620.43 2.54 5977153.86 585717.34 N 70 20 50.911 W 149 18 14.993 85.54 87.29 88.29 88.39 88.53 92.13 93.12 93.89 92.37 92.39 8585.49 8661.79 2798:56 3487.30 2815.86 -947.08 2651.81 3.64 5977152.81 8587.36 8663.66 2827.59 3517.14 2844.41 -948.45 2681.62 6.72 5977151.77 8588.58 8664.88 2858.95 3548.67 2874.73 -950.38 2713.09 4.00 5977150.19 8589.48 8665.78 2889.48 3579.68 2904.53 -952.07 2744.06 4.91 5977148.84 8590.31 8666.61 2919.93 3610.69 2934.24 -953.36 2775.04 0.46 5977147.90 8591.07 8667.37 2950.06 3641.37 2963.66 -954.66 2805.69 0.44 5977146.93 8591.84 8668.14 2980.72 3672.51 2993.67 -956.40 2836.78 4.66 5977145.54 8592.59 8668.89 3010.96 3703.24 3023.29 -958.12 2867.46 4.76 5977144.16 8593.25 8669.55 3040.77 3733.59 3052.47 -959.40 2897.78 0.83 5977143.21 8593.79 8670.09 3072.10 3765.48 3083.17 -960.77 2929.65 1.16 5977142.19 585748.74 585778.56 585810.04 585841.03 585872.02 585902.68 585933.79 585964.47 585994.81 586026.68 N 70 20 50.897 W 149 18 14.075 N 70 20 50.884 W 149 18 13.204 N 70 20 50.864 W 149 18 12.285 N 70 20 50.848 W 149 18 11.380 N 70 20 50.835 W 149 18 10.475 N 70 20 50.822 W 149 18 9 79 N 70 20 50.805 W 149 1 N 70 20 50.788 W 149 18 N 70 20 50.775 W 149 18 6.888 N 70 20 50.761 W 14918 5.957 10925.99 88 .63 92.48 10957.14 88 .56 93.93 10987.87 88 .63 92.47 11018.23 88 .87 92.39 11050.13 89 .21 92.54 11080. 88 89.28 93.40 8594.19 8670.49 3102.35 3796.23 3112.85 -962.37 2960.35 2.81 5977140. 94 11112. 25 89.38 92.84 8594.56 8670.86 3133.22 3827.60 3143.18 -964.08 2991.68 1.81 5977139. 58 11142 .97 89.35 92.74 8594.90 8671.20 3163.42 3858.32 3172.85 -965.57 3022.36 0.34 5977138. 43 11174. 73 89.28 93.80 8595.28 8671.58 3194.70 3890.07 3203.61 -967.38 3054.06 3.34 5977136. 97 11206. 65 89.49 94.41 8595.62 8671.92 3226.20 3921.99 3234.66 -969.67 3085.90 2.02 5977135. 04 11238. 13 88.94 93.47 8596.05 8672.35 3257.26 3953.47 3265.27 -971.83 3117.30 3.46 5977133. 22 11268. 25 88.18 94.69 8596.81 8673.11 3286.98 3983.58 3294.59 -973.97 3147.33 4.77 5977131. 41 11299. 00 88.35 95.20 8597.74 8674.04 3317.39 4014.32 3324.63 -976.62 3177.96 1.75 5977129. 10 11331. 25 88.35 95.34 8598.67 8674.97 3349.31 4046.55 3356.19 -979.58 3210.06 0.43 5977126. 50 11361. 37 88.90 96.89 8599.39 8675.69 3379.19 4076.66 3385.77 -982.79 3240.00 5.46 5977123. 62 11393. 08 92.09 95.81 8599.12 8675.42 3410.66 4108.37 3416.95 -986.30 3271.50 10.62 5977120. 47 11424. 12 93:54 95.65 8597.59 8673.89 3441.39 4139.37 3447.38 -989.39 3302.35 4.70 5977117. 71 11455. 88 91.89 95.40 8596.09 8672.39 3472.82 4171.09 3478.51 -992.45 3333.93 5.25 5977115. 01 11485. 63 91.54 94.48 8595.20 8671.50 3502.24 4200.83 3507.64 -995.01 3363.55 3.31 5977112. 78 11517. 56 91.47 94.47 8594.36 8670.66 3533.78 4232.75 3538.87 -997.50 3395.37 0.22 5977110. 64 11549. 08 91.89 95.79 8593.44 8669.74 3564.97 4264.25 3569.77 -1000.31 3426.75 4.39 5977108. 17 11579. 77 92.06 94.62 8592.38 8668.68 3595.33 4294.93 3599.88 -1003.10 3457.30 3.85 5977105. 73 11610. 60 92.37 94.51 8591.19 8667.49 3625.78 4325.73 3630.06 -1005.55 3488.01 1.07 5977103. 62 11641. 53 92.95 94.86 8589.75 8666.05 3656.33 4356.63 3660.35 -1008.07 3518.80 2.19 5977101. 44 11672. 15 93.32 95.50 8588.08 8664.38 3686.60 4387.20 3690.39 -1010.83 3549.25 2.41 5977099. 01 11703. 34 94.29 95.07 8586.01 8662.31 3717.41 4418:32 3720.98 -1013.70 3580.24 3.40 5977096. 49 11733. 68 95.05 96.71 8583.54 8659.84 3747.40 4448.56 3750.77 -1016.80 3610.32 5.94 5977093. 72 11766 .85 93.88 95.87 8580.95 8657.25 3780.22 4481.63 3783.39 -1020.42 3643.19 4.34 5977090. 46 11796. 37 91.23 96.15 8579.64 8655.94 3809.47 4511.12 3812.47 -1023.51 3672.51 9.03 5977087. 70 11828. 01 87.84 95.89 8579.89 8656.19 3840.85 4542.76 3843.67 -1026.83 3703.97 10.75 5977084. 73 11859. 45 86.95 96.92 8581.32 8657.62 3872.03 4574.16 3874.68 -1030.33 3735.18 4.33 5977081. 58 586057.40 N 70 20 50.746 W 149 18 5.060 586088.74 N 70 20 50.729 W 149 18 4.145 586119.43 N 70 20 50.714 W 149 18 3.248 586151.15 N 70 20 50.696 W 149 18 2.322 586183.01 N 70 20 50.673 W 149 18 1.392 586214.43 N 70 20 50.652 W 149 18 0.474 586244.48 N 70 20 50.631 W 149 17 59.596 586275.13 N 70 20 50.605 W 149 17 58.702 586307.26 N 70 20 50.575 W 149 17 57.764 586337.23 N 70 20 50.544 W 149 17 56.889 586368.77 N 70 20 50.509 W 14917 55.968 586399.65 N 70 20 50.478 W 149 17 55.067 586431.25 N 70 20 50.448 W 149 17 54.144 586460.90 N 70 20 50.423 W 149 17 53.279 586492.74 N 70 20 50.398 W 149 179 586524.15 N 70 20 50.370 W 149 17 5 .432 586554.72 N 70 20 50.343 W 149 17 50.540 586585.45 N 70 20 50.319 W 149 17 49.642 586616.27 N 70 20 50.294 W 149 1748.742 586646.75 N 70 20 50.266 W 149 17 47.853 586677.76 N 70 20 50.238 W 149 17 46.947 586707.87 N 70 20 50.207 W 14917 46.068 586740.77 N 70 20 50.172 W 149 17 45.108 586770.13 N 70 20 50.141 W 149 17 44.251 586801.62 N 70 20 50.108 W 14917 43.332 586832.87 N 70 20 50.074 W 149 17 42.420 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50PB1\L-50PB1 Generated 11/22/2005 2:33 PM Page 5 of 6 Measured Vertical Along Hole Comments Inclination Azimuth Sub-Sea TVD TVD Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft tt ft ft tt ft ft de 100 ft ftUS ftUS 1123y1.L5 2Sb.VL yb.:5/ 25btf:i.L/ tibby.b/ JyV;i.bb 4bVb.yU :iyUb.Vb -l V:i4.Ul :~/bb./7 S.4U by//V/25.Lb StSbtSb4.4J IV /V "LU bU.U3t5 VV 14y 1 / 41,4yy 11922.12 85.92 97.27 8585.44 8661.74 3934.15 4636.70 3936.51 -1037.66 3797.29 2.93 5977074 .94 586895.04 N 70 20 50.001 W 149 17 40.606 11953.05 88.05 99.35 8587.07 8663.37 3964.92 4667.58 3967.17 -1042.13 3827.84 9.62 5977070 .81 586925.64 N 70 20 49.957 W 149 17 39.713 1 i 983.93 89.90 99.98 8587.62 8663.92 3995.73 4698.45 3997.90 -1047.31 3858.28 6.33 5977065 .97 586956.13 N 70 20 49.906 W 149 17 38.823 12015.53 92.13 98.88 8587.06 8663.36 4027.25 4730.05 4029.33 -1052.49 3889.45 7.87 5977061 .14 586987.35 N 70 20 49.855 W 149 17 37.913 12046.10 92.19 99.66 8585.91 8662.21 4057.72 4760.60 4059.72 -1057.41 3919.59 2.56 5977056 .55 587017.55 N 70 20 49.807 W 149 17 37.032 12077.91 91.75 98.17 8584.82 8661.12 4089.42 4792.39 4091.33 -1062.33 3951.00 4.88 5977051 .97 587049.00 N 70 20 49.758 W 149 17 36.114 12109.07 91.71 98.06 8583.88 8660.18 4120.44 4823.53 4122.25 -1066.73 3981.84 0.38 5977047 .92 587079.88 N 70 20 49.715 W 149 17 35.213 12139.74 91.68 100.00 8582.97 8659.27 4151.01 4854.19 4152.74 -1071.54 4012.11 6.32 5977043 .45 587110.21 N 70 20 49.667 W 149 17 34.329 12171.09 91.20 99.34 8582.18 8658.48 4182.29 4885.53 4183.95 -1076.81 4043.00 2.60 5977038 .52 587141.15 N 70 20 49.615 W 149 17 33.426 12202.27 91.17 99.75 8581.54 8657.84 4213.39 4916.70 4214.98 -1081.98 4073.75 1.32 5977033 .70 587171.95 N 70 20 49.564 W 149 17 3 8 12233.02 91.03 98.60 8580.95 8657.25 4244.06 4947.45 4245.58 -1086.88 4104.10 3.77 5977029 .13 587202.35 N 70 20 49.516 W 149 17 12263.99 90.10 99.36 8580.64 8656.94 4274.94 4978.42 4276.38 -1091.71 4134.69 3.88 5977024 .64 587232.99 N 70 20 49.468 W 149 17 12295.14 90.00 99.78 8580.61 8656.91 4306.02 5009.57 4307.40 -1096.89 4165.40 1.39 5977019 .80 587263.75 N 70 20 49.417 W 149 17 29.850 12326.30 89.93 97.61 8580.63 8656.93 4337.08 5040.73 4338.39 -1101.60 4196.20 6.97 5977015 .43 587294.60 N 70 20 49.371 W 149 17 28.950 12357.94 89.21 97.57 8580.87 8657.17 4368.56 5072.37 4369.79 -1105.78 4227.56 2.28 5977011 .60 587326.01 N 70 20 49.329 W 14917 28.034 12389.92 89.04 99.46 8581.36 8657.66 4400.42 5104.34 4401.58 -1110.51 4259.19 5.93 5977007 .22 587357.67 N 70 20 49.282 W 149 17 27.110 12420.33 89.07 99.52 8581.86 8658.16 4430.76 5134.75 4431.86 -1115.53 4289.18 0.22 5977002 .54 587387.72 N 70 20 49.233 W 149 17 26.234 12451.72 88.66 97.06 8582.48 8658.78 4462.02 5166.13 4463.06 -1120.05 4320.23 7.94 5976998 .36 587418.81 N 70 20 49.188 W 149 17 25.326 12482.68 88.01 97.56 8583.38 8659.68 4492.80 5197.08 4493.76 -1123.99 4350.92 2.65 5976994. 76 587449.55 N 70 20 49.149 W 149 17 24.430 12513:54 88.08 98.64 8584.43 8660.73 4523.52 5227.92 4524.41 -1128.33 4381.46 3.50 5976990. 76 587480.13 N 70 20 49.107 W 149 17 23.537 12544.51 88.35 99.57 8585.40 8661.70 4554.39 5258.87 4555.23 -1133.23 4412.02 3.13 5976986. 20 587510.74 N 70 20 49.058 W 149 17 22.644 Last MWD+IFR+MS 12576.03 89.07 97.87 8586.11 8662.41 4585.80 5290.39 4586.59 -1138.01 4443.17 5.86 5976981 .77 587541.93 N 70 20 49.011 W 149 17 21.734 TD (Projected) 12628.00 91.50 97.87 8585.85 8662.15 4637.53 5342.35 4638.23 -1145.13 4494.64 4.68 5976975. 22 587593.48 N 70 20 48.941 W 149 17 20.230 Survey Type: Definitive Survey NOTES: GYD GC SS - (Gyrodata - gyro single shots -- Gyrodata gyro orientatio n surveys. Not to be run above 70 degrees inclination. ) MWD +IFR + MS - (In-field referenced MWD with mult-stat ion analysis and correctio n applied in post-processing. Assumes a BHA sag correction is appli ed to enhance inclination accuracy. ) Legal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 2349 FSL 3830 FEL S34 T12N R11 E UM 5978070.34 583086.84 BHL : 1203 FSL 4618 FEL S35 T12N R11 E UM 5976975.22 587593.48 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50PB1\L-50P61 Generated 11/22/2005 2:33 PM Page 6 of 6 L-50 Survey ;., ~° t t.. Report '~~~ ~: Report Date: 18-Oct-05 Survey /DLS Computation Method: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 103.300° Field: Prudhoe Bay Unit - WOA Vertical Section Origin: N 0.000 ft, E 0.000 ft Structure /Slot: L-PAD / S-D TVD Reference Datum: Rotary Table Well: L-50 TVD Reference Elevation: 76.30 ft relative to MSL Borehole: L-50 Sea Bed /Ground Level Elevation: 47.80 ft relative to MSL UWI/API#: 500292327700 Magnetic Declination: 24.467° Survey Name /Date: L-50 /October 18, 2005 Total Field Strength: 57576.177 nT Tort /AHD / DDI / ERD ratio: 269.731 ° / 5527.25 ft / 6.342 / 0.636 Magnetic Dip: 80.846° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: September 28, 2005 Location LaULong: N 70 21 0.216, W 14919 31.563 Magnetic Declination Model: BGGM 2005 Location Grid N/E Y/X: N 5978070.340 ftUS, E 583086.840 ftUS North Reference: True North Grid Convergence Angle: +0.63528569° Total Corr Mag North •> True North: +24.467° Grid Scale Factor: 0.99990784 Local Coordinates Referenced 70: Well Head Comments Measured Inclination Azimuth Sub-Sea ND TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft k ft ft ft ft ft de 100 ft ftUS ftUS RTE 0.00 0.00 0.00 -76.30 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5978070.34 583086.84 N 70 21 0.216 W 149 19 31.563 First GYD GC SS 100.00 0.30 289.54 23.70 100.00 -0.26 0.26 0.26 0.09 -0.25 0.30 5978070.42 583086.59 N 70 21 0.217 W 149 19 31.570 200.00 0.32 320.67 123.70 200.00 -0.74 0.79 0.78 0.39 -0.67 0.17 5978070.72 583086.17 N 70 21 0.220 W 149 19 31.582 300.00 0.50 297.17 223.70 300.00 -1.39 1.50 1.48 0.81 -1.24 0.24 5978071.13 583085.60 N 70 21 0.224 W 149 19 31.599 400.00 0.43 286.18 323.69 399.99 -2.19 2.30 2.27 1.11 -1.98 0.11 5978071.43 583084.84 N 70 21 0.227 W 149 19 31.621 500.00 0.94 189.73 423.69 499.99 -2.51 3.28 2.52 0.41 -2.48 1.08 5978070.72 583084.35 N 70 21 0.220 W 149 19 31.635 600.00 1.23 181.26 523.67 599.97 -2.24 5.17 3.03 -1.48 -2.65 0.33 5978068.84 583084.21 N 70 21 0.202 W 149 19 31.640 700.00 1.07 185.17 623.65 699.95 -1.88 7.17 4.44 -3.48 -2.75 0.18 5978066.83 583084.13 N 70 21 0.182 W 149 19 31.643 Last GYD GC SS 800.00 0.77 181.04 723.64 799.94 -1.60 8.78 5.82 -5.08 -2.85 0.31 5978065.23 583084.05 N 70 21 0.166 W 149 19 31.646 Last GYD GC SS 900.00 0.88 190.06 823.63 899.93 -1.42 10.21 7.16 -6.51 -3.00 0.17 5978063.80 583083.92 N 70 21 0.152 W 149 19 31.650 First MWD+IFR+MS 945.18 1.09 197.08 868.80 945.10 -1.43 10.99 7.93 -7.26 -3.18 0.54 5978063.05 583083.74 N 70 21 0.145 W 149 16 1039.41 1.27 201.69 963.01 1039.31 -1.64 12.93 9.86 -9.09 -3.83 0.22 5978061.21 583083.11 N 70 21 0.127 W 149 1 5 1133.72 1.23 185.83 1057.30 1133.60 -1.66 14.97 11.88 -11.07 -4.32 0.37 5978059.23 583082.64 N 70 21 0.107 W 149 19 89 1226.68 0.53 118.00 1150.25 1226.55 -1.11 16.26 12.91 -12.26 -4.04 1.23 5978058.04 583082.93 N 70 21 0.096 W 149 19 31.681 1320.78 0.69 107.88 1244.34 1320.64 -0.13 17.26 13.02 -12.64 -3.12 0.20 5978057.67 583083.86 N 70 21 0.092 W 149 19 31.654 1413.98 0.80 90.14 1337.53 1413.83 1.06 18.47 12.96 -12.81 -1.93 0.27 5978057.51 583085.05 N 70 21 0.090 W 14919 31.619 1507.43 1.60 8.48 1430.97 1507.27 1.59 20.14 11.57 -11.52 -1.09 1.80 5978058.81 583085.88 N 70 21 0.103 W 14919 31.595 1599.25 1.66 5.30 1522.75 1599.05 1.30 22.75 8.96 -8.93 -0.78 0.12 5978061.40 583086.16 N 70 21 0.128 W 149 19 31.585 1693.74 1.68 10.81 1617.20 1693.50 1.05 25.51 6.22 -6.21 -0.39 0.17 5978064.13 583086.52 N 70 21 0.155 W 14919 31.574 1787.52 1.64 14.04 1710.94 1787.24 1.00 28.22 3.56 -3.56 0.19 0.11 5978066.79 583087.07 N 70 21 0.181 W 149 19 31.557 1880.60 1.53 6.04 1803.99 188029 0.86 30.79 1.21 -1.03 0.65 0.27 5978069.32 583087.50 N 70 21 0.206 W i 49 19 3i .544 1974.52 0.94 249.19 1897.89 1974.19 0.07 32.25 0.08 -0.05 0.06 2.26 5978070.29 583086.90 N 70 21 0.216 W 149 19 31.561 2067.28 0.68 241.45 1990.64 2066.94 -0.97 33.56 1.28 -0.59 -1.14 0.30 5978069.74 583085.71 N 70 21 0.210 W 149 19 31.596 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50\L-50 Generated 11/22/2005 2:33 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 ft h ft ft ft ft ft de 100 ft ftUS ftUS 216U.4U 0.67 L3U.U/ ZUtt3./6 L760,06 -1./1 34.66 Z.~/ -1.ZU -Z.U4 U.74 6y/tSU6y.1Z btS~Utf4.kt1 N /ULl U.2U4 W 14y ly 31.62L 2254.67 0.52 66.96 2178.03 2254.33 -1.69 35.17 2.49 -1.39 -2.07 1.25 5978068.93 583084.79 N 70 21 0.202 W 149 19 31.623 2348.15 0.80 71.67 2271.50 2347.80 -0.80 36.25 1.47 -1.02 -1.06 0.30 5978069.31 583085.79 N 70 21 0.206 W 149 19 31.594 2440.98 0.69 75.59 2364.32 2440.62 0.25 37.46 0.68 -0.67 0.10 0.13 5978069.67 583086.94 N 70 21 0.210 W 149 19 31.560 2524.51 0.73 67.87 2447.85 2524.15 1.13 38.49 1.13 -0.35 1.08 0.12 5978070.00 583087.92 N 70 21 0.213 W 149 19 31.531 2629.34 0.59 75.13 2552.67 2628.97 2.15 39.70 2.22 0.04 2.22 0.16 5978070.41 583089.06 N 70 21 0.217 W 149 19 31.498 2723.23 0.45 263.88 2646.56 2722.86 2.23 40.14 2.32 0.13 2.32 1.10 5978070.49 583089.16 N 70 21 0.217 W 149 19 31.495 2816.93 0.62 252:44 2740.25 2816.55 1.44 41.01 1.47 -0.07 1.47 0.21 5978070.29 583088.31 N 70 21 0.215 W 149 19 31.520 2909.70 0.69 241.55 2833.02 2909.32 0.60 42.07 0.69 -0.48 0.50 0.15 5978069.86 583087.34 N 70 21 0.211 W 149 19 31.548 3003.84 0.72 244.12 2927.15 3003.45 -0.28 43.22 1.14 -1.01 -0.53 0.05 5978069.32 583086.32 N 70 21 0.206 W 149 19 31.578 3097.53 0.84 237.36 3020.83 3097.13 -1.22 44.50 2.32 -1.64 -1.64 0.16 5978068.68 583085.22 N 70 21 0.200 W 149 19 3 11 3190.89 0.79 234.66 3114.18 3190.48 -2.12 45.83 3.63 -2.38 -2.74 0.07 5978067,93 583084.13 N 70 21 0.193 W 149 19 3284.37 0.12 168.89 3207.66 3283.96 -2.50 46.53 4.32 -2.85 -3.25 0.80 5978067.46 583083.62 N 70 21 0.188 W 149 19 31.658 3377.89 0.24 79.57 3301.18 3377.48 -2.29 46.77 4.20 -2.91 -3.04 0.29 5978067.40 583083.84 N 70 21 0.188 W 149 19 31.651 3472.08 0.04 96.98 3395.37 3471.67 -2.07 47.00 4.02 -2.88 -2.81 0.21 5978067.43 583084.06 N 70 21 0.188 W 149 19 31.645 3566.04 0.00 118.54 3489.33 3565.63 -2.04 47.03 4.00 -2.88 -2.78 0.04 5978067.43 583084.10 N 70 21 0.188 W 149 19 31.644 3659.84 0.20 7.63 3583.13 3659.43 -2.06 47.20 3.87 -2.72 -2.75 0.21 5978067.59 583084.12 N 70 21 0.189 W 149 19 31.643 3753.00 0.22 11.05 3676.29 3752.59 -2.08 47.54 3.60 -2.38 -2.70 0.03 5978067.93 583084.17 N 70 21 0.193 W 149 19 31.642 3846.88 0.09 13.88 3770.17 3846.47 -2.08 47.79 3.40 -2.13 -2.65 0.14 5978068.18 583084.22 N 70 21 0.195 W 149 19 31.640 3938.33 1.56 198.82 3861.61 3937.91 -2.20 48.97 4.44 -3.24 -3.03 1.80 5978067.06 583083.85 N 70 21 0.184 W 149 19 31.651 4031.69 4.35 197.88 3954.83 4031.13 -2.61 53.79 9.03 -7.82 -4.53 2.99 5978062.47 583082.40 N 70 21 0.139 W 149 19 31.695 4125.72 7.55 197.92 4048.34 4i 24.64 -3.39 63.53 18.67 -17.09 -7.52 3.40 5978053.17 583079.51 N 70 21 0.048 W 14919 31.783 4219.37 10.35 200.28 4140.85 4217.15 -4.91 78.10 33.21 -30.84 -12.33 3.01 5978039.37 583074.85 N 70 20 59.913 W 149 19 31.923 4311.23 11.00 201.17 4231.11 4307.41 -7.11 95.11 50.23 -46.75 -18.36 0.73 5978023.39 583069.00 N 70 20 59.756 W 149 19 32.099 4405.76 10.90 200.94 4323.92 4400.22 -9.54 113.07 68.18 -63.51 -24.81 0.12 5978006.57 583062.74 N 70 20 59.592 W 149 19 32.288 4498.72 11.16 204.59 4415.17 4491.47 -12.47 130.85 85.95 -79.90 -31.70 0.80 5977990.10 583056.04 N 70 20 59.430 W 149 19 32.489 4592.18 11.12 207.26 4506.87 4583.17 -16.41 148.90 103.97 -96.13 -39.59 0.55 5977973.78 583048.32 N 70 20 59.271 W 149 19 32.720 4685.37 11.11 206.04 4598.31 4674.61 -20.56 166.87 121,89 -112.19 -47.65 0.25 5977957.64 583040.45 N 70 20 59.113 W 149 19 32.955 4779.33 10.33 212.04 4690.63 4766.93 -25.26 184.33 139.26 -127.46 -56.09 1.45 5977942.27 583032.17 N 70 20 58.963 W 149 12 4872.60 10.34 211.82 4782.39 4858.69 -30.61 201.06 155.84 -141.67 -64.94 0.04 5977927.98 583023.48 N 70 20 58.823 W 149 1 0 4965.96 10.12 211.24 4874.26 4950.56 -35.79 217.64 172.31 -155.80 -73.61 0.26 5977913.75 583014.97 N 70 20 58.684 W 149 19 33.714 5058.95 10.02 209.17 4965.82 5042.12 -40.52 233.90 188.51 -169.85 -81.79 0.40 5977899.61 583006.95 N 70 20 58.546 W 149 19 33.953 I 5152.59 9.83 209.96 5058.06 5134.36 -45.04 250.04 204.62 -183.88 -89.75 0.25 5977885.49 582999.14 N 70 20 58.408 W 149 19 34.186 5251.95 9.71 209.56 5155.98 5232.28 -49.82 266.90 221.45 -198.52 -98.12 0.14 5977870.76 582990.93 N 70 20 58.264 W 149 19 34.430 5344.96 9.77 206.74 5247.65 5323.95 -53.85 282.63 237.17 -212.39 -105.54 0.52 5977856.81 582983.67 N 70 20 58.127 W 14919 34.647 5437.92 9.27 205.30 5339.33 5415.63 -57.24 298.01 252.54 -226.21 -112.29 0.60 5977842.92 582977.07 N 70 20 57.991 W 149 19 34.844 5531.97 9.84 208.36 5432.07 5508.37 -60.90 313.62 268.15 -240.13 -119.35 0.81 5977828.93 582970:18 N 70 20 57.855 W 14919 35.050 5624.85 9.43 209.65 5523.64 5599.94 -65.11 329.16 283.68 -253.72 -126.88 0.50 5977815.25 582962.79 N 70 20 57.721 W 149 19 35.271 5718.24 9.80 208.89 5615.72 5692.02 -69.40 344.76 299.26 -267.33 -134.50 0.42 5977801.56 582955.32 N 70 20 57.587 W 149 19 35.493 5812.02 10.14 208.43 5708.09 5784.39 -73.70 361.00 315.49 -281.58 -142.29 0.37 5977787.23 582947.69 N 70 20 57.447 W 149 19 35.721 5905.57 9.45 207.24 5800.27 5876.57 -77.70 376.91 331.40 -295.65 -149.73 0.77 5977773.08 582940.41 N 70 20 57.308 W 149 19 35.938 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50\L-50 Generated 11/22/2005 2:33 PM Page 2 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 ft ft de 100 ft ttUS ftUS 5yytt.41 lU.fi~ LU(i.4y 5ti51.(iy by(i/.yy -tt1.4y :~y:~.oy :i4/.btS -:ilU.Uy -15/.U;i 1.LtS 5y///StS.b(i StfLy:i3.L/ N /ULU 5/.1(iFi W 14y ly:iEi.lb2 6091.68 10.95 208.39 5983.31 6059.61 -85.76 410.55 365.04 -325.58 -165.08 0.51 5977742.98 582925.39 N 70 20 57.014 W 149 19 36.387 6184.66 11.20 212.49 6074.56 6150.86 -91.02 428.41 382.86 -340.97 -174.13 0.89 5977727.50 582916.51 N 70 20 56.863 W 149 19 36.651 6276.68 10.73 215.16 6164.90 6241.20 -97.15 445.91 400.24 -355.51 -183.87 0.75 5977712.85 582906.94 N 70 20 56.720 W 149 19 36.936 6369.91 10.43 214.71 6256.54 6332.84 -103.46 463.03 417.21 -369.54 -193.67 0.33 5977698.71 582897.30 N 70 20 56.582 W 149 19 37.222 6462.74 9.82 213.12 6347.93 6424.23 -109.21 479.34 433.44 -383.08 -202.78 0.72 5977685.07 5$2888.34 N 70 20 56.449 W 149 19 37.489 6556.58 9.72 210.20 6440.41 6516.71 -114.23 495.26 449.32 -396.63 -211.14 0.54 5977671.43 582880.13 N 70 20 56.315 W 149 19 37.733 6651.13 9.36 207.64 6533.65 6609.95 -118.45 510.93 464.99 -410.34 -218.72 0.59 5977657.64 582872.70 N 70 20 56.180 W 149 19 37.954 6744.54 9.30 196.35 6625.83 6702.13 -120.74 526.03 479.98 -424.31 -224.37 1.96 5977643.61 582867.21 N 70 20 56.043 W 149 19 38.119 6838.16 9.96 170.22 6718.18 6794.48 -117.96 541.43 493.85 -439.55 -225.12 4.68 5977628.36 582866.63 N 70 20 55.893 W 149 19 38.141 6931.76 11.11 152.62 6810.22 6886.52 -108.91 558.41 505.71 -455.54 -219.60 3.63 5977612.43 582872.33 N 70 20 55.736 W 149 19 3 0 7024.23 11.68 138.50 6900.89 6977.19 -95.45 576.59 514.92 -470.47 -209.30 3.07 5977597.62 582882.79 N 70 20 55.589 W 149 19 7117.64 13.64 119.76 6992.06 7068.36 -77.15 596.89 520.33 -483.02 -193.46 4.84 5977585.25 582898.76 N 70 20 55.466 W 149 19 37.216 7210.61 16.06 110.91 7081.93 7158.23 -53.89 620.67 522.17 -493.06 -171.93 3.56 5977575.45 582920.41 N 70 20 55.367 W 149 19 36.587 7303.59 19.51 106.72 7170.46 7246.76 -25.63 649.06 522.64 -502.12 -145.03 3.96 5977566.69 582947.40 N 70 20 55.278 W 149 19 35.801 7397.40 23.59 106.19 7257.69 7333.99 8.77 683.51 523.97 -511.86 -111.99 4.35 5977557.32 582980.54 N 70 20 55.182 W 149 19 34.835 7491.76 27.19 106.68 7342.92 7419.22 49.16 723.96 528.41 -523.32 -73.19 3.82 5977546.29 583019.46 N 70 20 55.069 W 149 19 33.702 7584.04 30.04 107.84 7423.92 7500.22 93.24 768.15 537.34 -536.45 -31.00 3.15 5977533.63 583061.79 N 70 20 54.940 W 149 19 32.469 7678.55 33.74 106.31 7504.16 7580.46 143.05 818.07 551.33 -551.07 16.72 4.01 5977519.54 583109.67 N 70 20 54.796 W 149 19 31.074 7772.02 36.48 103.85 7580.62 7656.92 196.77 871.81 569.17 -565.02 68.63 3.30 5977506.17 583161.72 N 70 20 54.659 W 149 19 29.557 7865.72 40.48 101.04 7653.96 7730.26 255.04 930.10 591.00 -577.51 125.55 4.66 5977494.31 583218.77 N 70 20 54.536 W 149 19 27.894 7957.61 43.89 101.16 7722.04 7798.34 316.69 991.80 618.08 -589.39 186.09 3.71 5977483.10 583279.44 N 70 20 54.419 W 149 19 26.125 8051.49 46.85 100.65 7787.98 7864.28 383.44 1058.60 652.52 -602.03 251.69 3.18 5977471.20 583345.17 N 70 20 54.295 W 149 19 24.208 8145.00 46.24 100.43 7852.30 7928.60 451.24 1126.48 692.05 -614.44 318.43 0.67 5977459.52 583412.03 N 70 20 54.173 W 149 19 22.258 8238.36 45.49 99.53 7917.31 7993.61 518.13 1193.48 734.66 -626.06 384.42 1.06 5977448.64 583478.14 N 70 20 54.059 W 149 19 20.329 8330.95 44.83 98.34 7982.60 8058.90 583.59 1259.14 778.89 -636.26 449.27 1.16 5977439.16 583543.09 N 70 20 53.958 W 1491918.434 8425.65 45.84 98.74 8049.17 8125.47 650.71 1326.49 826.91 -646.26 515.87 1.11 5977429.90 583609.80 N 70 20 53.860 W 149 19 16.488 8518.07 45.70 98.58 8113.63 8189.93 716.72 1392.71 876.70 -656.23 581.34 0.20 5977420.65 583675.37 N 70 20 53.762 W 149 19 14.575 8611.81 44.96 97.95 8179.53 8255.83 783.12 1459.37 928.62 -665.82 647.31 0.92 5977411.80 583741.43 N 70 20 53.668 W 149 1 7 8705.83 45.59 99.75 8245.70 8322.00 849.72 1526.17 982.81 -676.10 713.31 1.52 5977402.25 583807.54 N 70 20 53.566 W 149 1 9 ~ 8798.96 46.70 99.62 8310.22 8386.52 916.74 1593.33 1039.30 -687.40 779.51 1.20 5977391.69 583873.85 N 70 20 53.455 W 149 19 8.784 8891.57 49.54 101.37 8372.04 8448.34 985.60 1662.27 1099.03 -699.98 847.29 3.37 5977379.86 583941.76 N 70 20 53.331 W 149 19 6.804 8984.90 54.06 101.81 8429.74 8506.04 1058.89 1735.60 1164.30 -714.72 919.12 4.86 5977365.92 584013.74 N 70 20 53.186 W 149 19 4.705 9077.94 58.50 103.53 8481.38 8557.68 1136.25 1812.96 1234.76 -731.72 994.59 5.01 5977349.76 584089.39 N 70 20 53.019 W 149 19 2.499 MWD+IFR+MS 9141.12 61.74 102.14 8512.85 8589.15 1191.02 1867.73 1285.16 -743.87 1048.00 5.47 5977338.20 584142.92 N 70 20 52.900 W 149 i9 0.939 Blind Drill Out 9210:57 66.90 100.89 8542.94 8619.24 1253.55 1930.30 1342.62 -756.35 1109.31 7.60 5977326.41 584204.36 N 70 20 52.777 W 149 18 59.147 Blind (Inc Only) 9229.83 71.66 100.55 8549.75 8626.05 1271.54 1948.31 1359.15 -759.70 1127.00 24.77 5977323.26 584222.09 N 70 20 52.744 W 149 18 58.630 Blind (Inc Only) 9239.97 74.27 100.36 8552.72 8629.02 1281.23 1958.01 1368.04 -761.46 1136.54 25.80 5977321.60 584231.64 N 70 20 52.726 W 149 18 58.352 MWD+IFR+MS 9273.09 81.65 99.77 8559.63 8635.93 1313.54 1990.38 1397.73 -767.11 1168.41 22.35 5977316.30 584263.57 N 70 20 52.671 W 149 18 57.420 9308.62 85.02 97.62 8563.75 8640.05 1348.71 2025.66 1429.88 -772.44 1203.29 11.23 5977311.36 584298.50 N 70 20 52.618 W 149 18 56.401 9339.20 84.26 98.83 8566.61 8642.91 1379.04 2056.11 1457.65 -776.80 1233.42 4.66 5977307.34 584328.68 N 70 20 52.575 W 149 18 55.521 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50\L-50 Generated 11/2212005 2:33 PM Page 3 of 6 Measured Vertical Along Hole Comments Inclination Azimuth Sub•Sea TVD ND Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 700 ft itUS ftUS 9370.87 83 .20 101.30 8570.07 8646.37 1410.47 2087.59 1486.85 -782.30 1264.41 8.44 5977302.18 9402.70 84 .58 104.13 8573.46 8649.76 1442.11 2119.23 1516.80 -789.26 1295.28 9.85 5977295.56 9432.79 87 .60 103.60 8575.51 8651.81 1472.12 2149.25 1545.46 -796.46 1324.42 10.19 5977288.69 9465.44 90 .07 104.37 8576.17 8652.47 1504.76 2181.89 1576.69 -804.35 1356.10 7.92 5977281.15 9495.29 92 .85 104.63 8575.41 8651.71 1534.59 2211.73 1605.37 -811.82 1384.98 9.35 5977274.01 9527.02 93. 60 103.93 8573.63 8649.93 1566.27 2243.41 1635.83 -819.63 1415.68 3.23 5977266.53 9558.41 93. 77 102.54 8571.61 8647.91 1597.59 2274.73 1665.84 -826.80 1446.18 4.45 5977259.70 9588.96 93. 70 99.65 8569.62 8645.92 1628.05 2305.22 1694.75 -832.67 1476.09 9.44 5977254.17 9620.87 92. 91 98.16 8567.78 8644.08 1659.81 2337.08 1724.62 -837.60 1507.56 5.28 5977249.59 9651.38 92. 92 97.34 8566.23 8642.53 1690.14 2367.55 1753.04 -841.71 1537.75 2.68 5977245.81 9682.58 90.89 97.07 8565.19 8641.49 1721.15 2398.73 1782.09 -845.62 1568.69 6.56 5977242.25 9713.23 89.76 97.51 8565.02 8641.32 1751.63 2429.38 1810.73 -849.51 1599.09 3.96 5977238.69 9744.89 90.00 98.95 8565.08 8641.38 1783.16 2461.04 1840.56 -854.04 1630.42 4.61 5977234.51 9775.84 89.52 98.63 8565.21 8641.51 1814.02 2491.99 1869.87 -858.77 1661.01 1.86 5977230.12 9806.28 89.45 98.75 8565.48 8641.78 1844.36 2522.42 1898.74 -863:37 1691.10 0.46 5977225.86 9837.91 89.25 98.13 8565.84 8642.14 1875.87 2554.05 1928.74 -868.01 1722.38 2.06 5977221.56 9869.33 88.59 97.80 8566.44 8642.74 1907.15 2585.47 1958.51 -872.36 1753.49 2.35 5977217.55 9900.22 88.22 97.71 8567.30 8643.60 1937.88 2616.34 1987.78 -876.53 1784.09 1.23 5977213.73 9931.70 88.29 96.66 8568.25 8644.55 1969.17 2647.81 2017.56 -880.46 1815.31 3.34 5977210.14 9961.17 88.11 96.08 8569.18 8645.48 1998.41 2677.27 2045.35 -883.73 1844.58 2.06 5977207.20 9992.58 87.98 95.96 8570.25 8646.55 2029.55 2708.66 2074.95 -887.02 1875.80 0.56 5977204.25 10022.35 86.50 96.22 8571.68 8647.98 2059.05 2738.39 2103.05 -890.18 1905.36 5.05 5977201.42 10053.54 85.68 96.12 8573.81 8650.11 2089.92 2769.51 2132.52 -893.52 1936.30 2.65 5977198.42 10084.38 85.85 96.63 8576.09 8652.39 2120.45 2800.26 2161.73 -896.94 1966.87 1.74 5977195.35 10115.60 88.01 96.44 8577.76 8654.06 2151.41 2831.44 2191.40 -900.49 1997.84 6.95 5977192.14 10147.03 89.11 96.53 8578.55 8654.85 2182.61 2862.86 2221.34 -904.04 2029.06 3.51 5977188.94 10179.13 89.04 96.41 8579.07 8655.37 2214.48 2894.95 2251.96 -907.65 2060.95 0.43 5977185.68 10209.38 88.94 96.16 8579.60 8655.90 2244.49 2925.20 2280.83 -910.96 2091.01 0.89 5977182.70 10240.10 88.87 94.62 8580.19 8656.49 2274.92 2955.91 2310.03 -913.85 2121.59 5.02 5977180.16 10271.62 88.90 95.51 8580.80 8657.10 2306.10 2987.43 2339.99 -916.63 2152.98 2.82 5977177.72 10302.23 89.38 94.89 8581.26 8657.56 2336.41 3018.03 2369.14 -919.40 2183.46 2.56 5977175.29 10333.71 89.38 93.63 8581.60 8657.90 2367.49 3049.51 2398.99 -921.74 2214.85 4.00 5977173.30 10365.23 88.87 93.71 8582.08 8658.38 2398.56 3081.03 2428.83 -923.76 2246.30 1.64 5977171.63 10396:46 89.62 94.01 8582.50 8658.80 2429.37 3112.25 2458.46 -925.86 2277.46 2.59 5977169.87 10427.45 92.02 96.10 8582.05 8658.35 2460.03 3143.24 2488.10 -928.59 2308.32 10.27 5977167.48 10459.59 92.84 95.11 8580.69 8656.99 2491.85 3175.35 2518.93 -931.73 2340.28 4.00 5977164.70 10490.18 92.81 94.42 8579.18 8655.48 2522,07 3205.90 2548.17 -934.27 2370.72 2.26 5977162.50 10521.24 91.37 92.64 8578.05 8654.35 2552.65 3236.94 2577.71 -936.18 2401.70 7.37 5977160.94 10552.32 89.79 91.54 8577.73 8654.03 2583.14 3268.02 2607.08 -937.31 2432.76 6.19 5977160.15 10584.15 89.69 91.89 8577.88 8654.18 2614.32 3299.85 2637.13 -938.26 2464.57 1.14 5977159.55 584359.73 N 70 20 52.521 W 149 18 54.615 584390.67 N 70 20 52.453 W 149 18 53.713 584419.89 N 70 20 52.382 W 149 18 52.862 584451.64 N 70 20 52.304 W 14918 51.936 584480.61 N 70 20 52.231 W 149 18 51.092 584511.39 N 70 20 52.154 W 149 18 50.195 584541.96 N 70 20 52.083 W 149 18 49.304 584571.93 N 70 20 52.026 W 14918 48.430 584603.45 N 70 20 51.977 W 149 18 47.510 584633.68 N 70 20 51.937 W 149 18 46.628 584664.66 N 70 20 51.898 W 149 18 584695.10 N 70 20 51.860 W 14918 584726.47 N 70 20 51.815 W 149 18 43.920 584757.11 N 70 20 51.768 W 149 18 43.027 584787.24 N 70 20 51.723 W 149 18 42.148 584818.58 N 70 20 51.677 W 149 18 41.233 584849.73 N 70 20 51.635 W 149 18 40.324 584880.37 N 70 20 51.594 W 149 18 39.430 584911.62 N 70 20 51.555 W 149 18 38.518 584940.93 N 70 20 51.523 W 149 18 37.663 584972.18 N 70 20 51.490 W 149 18 36.751 585001.78 N 70 20 51.459 W 149 18 35.887 585032.75 N 70 20 51.426 W 149 18 34.983 585063.34 N 70 20 51.392 W 149 18 34.090 585094.35 N 70 20 51.357 W 149 18 33.185 585125.60 N 70 20 51.322 W 149 18 32.272 585157.53 N 70 20 51.287 W 149 18 31.341 585187.62 N 70 20 51.254 W 149 18 30.462 585218.23 N 70 20 51.226 W 149 1 9 585249.65 N 70 20 51.198 W 149 1 1 585280.15 N 70 20 51.171 W 149 18 27.761 585311.56 N 70 20 51.148 W 149 18 26.843 585343.03 N 70 20 51.128 W 149 18 25.924 585374.21 N 70 20 51.107 W 149 18 25.014 585405.10 N 70 20 51.080 W 149 18 24.112 585437.08 N 70 20 51.049 W 149 18 23.179 585467.55 N 70 20 51.024 W 149 18 22.289 585498.55 N 70 20 51.005 W 149 18 21.384 585529.61 N 70 20 50.994 W 149 18 20.476 585561.43 N 70 20 50.984 W 149 18 19.547 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50\L-50 Generated 11/22/2005 2:33 PM Page 4 of 6 Measured Vertical Along Hole Comments Inclination Azimuth Sub-Sea TVD ND Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS 1Uti15. Uy 23y.14 yL.;S`J 235/23.1y i3d54.4y Lb44.tl/ :S:S:SU./y Lbtili.45 -y:iy.4L L4y5.4y L.4U 5y//15t3./~ 5Z555y"L.3t3 IV /U "LU bU.y/:i W 14y 123 li3.ti43 10645. 62 88 .63 92.30 8578.79 8655.09 2674.64 3361.31 2695.45 -940.67 2525.99 1.70 5977157.82 585622.87 N 70 20 50.961 W 149 18 17.752 10677. 17 87 .36 93.31 8579.89 8656.19 2705.64 3392.84 2725.52 -942.21 2557.48 5.14 5977156.63 585654.37 N 70 20 50.945 W 149 18 16.832 10708. 21 87 .09 93.15 8581.40 8657.70 2736.17 3423.84 2755.19 -943.96 2588.44 1.01 5977155.23 585685.34 N 70 20 50.928 W 14918 15.927 10740. 30 86 .29 93.00 8583.25 8659.55 2767.69 3455.88 2785.84 -945.68 2620.43 2.54 5977153.86 585717.34 N 70 20 50.911 W 149 18 14.993 10771. 80 85 .54 92.13 8585.49 8661.79 2798.56 3487.30 2815.86 -947.08 2651.81 3.64 5977152.81 585748.74 N 70 20 50.897 W 149 18 14.075 10801. 70 87 .29 93.12 8587.36 8663.66 2827.89 3517.14 2844.41 -948.45 2681.62 6.72 5977151.77 585778.56 N 70 20 50.884 W 149 18 13.204 10833. 25 88 .29 93.89 8588.58 8664.88 2858.95 3548.67 2874.73 -950.38 2713.09 4.00 5977150.19 585810.04 N 70 20 50.864 W 149 18 12.285 10864. 28 88 .39 92.37 8589.48 8665.78 2889.48 3579.68 2904.53 -952.07 2744.06 4.91 5977148.84 585841.03 N 70 20 50.848 W 149 1811.380 10895. 30 88. 53 92.39 8590.31 8666.61 2919.93 3610.69 2934.24 -953.36 2775.04 0.46 5977147.90 585872.02 N 70 20 50.835 W 149 18 10.475 10925. 99 88. 63 92.48 8591.07 8667.37 2950.06 3641.37 2963.66 -954.66 2805.69 0.44 5977146.93 585902.68 N 70 20 50.822 W 149 1 10957. 14 88. 56 93.93 8591.84 8668.14 2980.72 3672.51 2993.67 -956.40 2836.78 4.66 5977145.54 585933.79 N 70 20 50.805 W 1491 10987. 87 88 .63 92.47 8592.59 8668.89 3010.96 3703.24 3023.29 -958.12 2867.46 4.76 5977144.16 585964.47 N 70 20 50.788 W 14918 11018. 23 88 .87 92.39 8593.25 8669.55 3040.77 3733.59 3052.47 -959.40 2897.78 0.83 5977143.21 585994.81 N 70 20 50.775 W 149 18 6.888 11050. 13 89 .21 92.54 8593.79 8670.09 3072.10 3765.48 3083.17 -960.77 2929.65 1.16 5977142.19 586026.68 N 70 20 50.761 W 149 18 5.957 11080. 88 89 .28 93.40 8594.19 8670.49 3102.35 3796.23 3112.85 -962.37 2960.35 2.81 5977140.94 586057.40 N 70 20 50.746 W 149 18 5.060 11112. 25 89 .38 92.84 8594.56 8670.86 3133.22 3827.60 3143.18 -964.08 2991.68 1.81 5977139.58 586088.74 N 70 20 50.729 W 149 18 4.145 11142. 97 89. 35 92.74 8594.90 8671.20 3163.42 3858.32 3172.85 -965.57 3022.36 0.34 5977138.43 586119.43 N 70 20 50.714 W 149 1$ 3.248 11174. 73 89. 28 93.80 8595.28 8671.58 3194.70 3890.07 3203.61 -967.38 3054.06 3.34 5977136.97 586151.15 N 70 20 50.696 W 149 18 2.322 11206. 65 89. 49 94.41 8595.62 8671.92 3226.20 3921.99 3234.66 -969.67 3085.90 2.02 5977135.04 586183.01 N 70 20 50.673 W 149 18 1.392 11238. 13 88. 94 93.47 8596.05 8672.35 3257.26 3953.47 3265.27 -971.83 3117.30 3.46 5977133.22 586214.43 N 70 20 50.652 W 149 18 0.474 11268. 25 88. 18 94.69 8596.81 8673.11 3286.98 3983.58 3294.59 -973.97 3147.33 4.77 5977131.41 586244.48 N 70 20 50.631 W 149 17 59.596 11299. 00 88. 35 95.20 8597.74 8674.04 3317.39 4014.32 3324.63 -976.62 3177.96 1.75 5977129.10 586275.13 N 70 20 50.605 W 149 17 58.702 11331. 25 88. 35 95.34 8598.67 8674.97 3349.31 4046.55 3356.19 -979.58 3210.06 0.43 5977126.50 586307.26 N 70 20 50.575 W 14917 57.764 11361. 37 88. 90 96.89 8599.39 8675.69 3379.19 4076.66 3385.77 -982.79 3240.00 5.46 5977123.62 586337.23 N 70 20 50.544 W 149 17 56.889 11393. 08 92. 09 95.81 8599.12 8675.42 3410.66 4108.37 3416.95 -986.30 3271.50 10.62 5977120.47 586368.77 N 70 20 50.509 W 149 17 55.968 11424. 12 93. 54 95.65 8597.59 8673.89 3441.39 4139.37 3447.38 -989.39 3302.35 4.70 5977117.71 586399.65 N 70 20 50.478 W 149 17 55.067 11455. 88 91. 89 95.40 8596.09 8672.39 3472.82 4171.09 3478.51 -992.45 3333.93 5.25 5977115.01 5$6431.25 N 70 20 50.448 W 149 17 54.144 11485. 63 91. 54 94.48 8595.20 8671.50 3502.24 4200.83 3507.64 -995.01 3363.55 3.31 5977112.78 586460.90 N 70 20 50.423 W 149 17 53:279 11517. 56 91. 47 94.47 8594.36 8670.66 3533.78 4232.75 3538.87 -997.50 3395.37 0.22 5977110.64 586492.74 N 70 20 50.398 W 149 179 11549. 08 91. 89 95.79 8593.44 8669.74 3564.97 4264.25 3569.77 -1000.31 3426.75 4.39 5977108.17 586524.15 N 70 20 50.370 W 149 17 51.432 11579. 77 92. 06 94.62 8592.38 8668.68 3595.33 4294.93 3599.88 -1003.10 3457.30 3.85 5977105.73 586554.72 N 70 20 50.343 W 149 17 50.540 11610. 60 92. 37 94.51 8591.19 8667.49 3625.78 4325.73 3630.06 -1005.55 3488.01 1.07 5977103.62 586585.45 N 70 20 50.319 W 149 17 49.642 11641. 53 92. 95 94.86 8589.75 8666.05 3656.33 4356.63 3660.35 -1008.07 3518.80 2.19 5977101.44 586616.27 N 70 20 50.294 W 149 17 48.742 11672. 15 93. 32 95.50 8588.08 8664.38 3686.60 4387.20 3690.39 -1010.83 3549.25 2.41 5977099.01 586646.75 N 70 20 50.266 W 149 17 47.853 11703. 34 94. 29 95.07 8586.01 8662.31 3717.41 4418.32 3720.98 -1013.70 3580.24 3.40 5977096.49 586677.76 N 70 20 50.238 W 149 17 46.947 11733. 68 95. 05 96.71 8583.54 8659.84 3747.40 4448.56 3750.77 -1016.80 3610.32 5.94 5977093.72 586707.87 N 70 20 50.207 W 149 17 46.068 11766. 85 93. 88 95.87 8580.95 8657.25 3780.22 4481.63 3783.39 -1020.42 3643.19 4.34 5977090.46 586740.77 N 70 20 50.172 W 149 17 45.108 11796. 37 91. 23 96.15 8579.64 8655.94 3809.47 4511.12 3812.47 -1023.51 3672.51 9.03 5977087.70 586770.13 N 70 20 50.141 W 149 17 44.251 11828. 01 87. 84 95.89 8579.89 8656.19 3840.85 4542.76 3843.67 -1026.83 3703.97 10.75 5977084.73 586801.62 fV 70 20 50.108 W 14917 43.332 11859.45 86.95 96.92 8581.32 8657.62 3872.03 4574.16 3874.68 -1030.33 3735.18 4.33 5977081.58 586832.87 N 70 20 50.074 W 149 17 42.420 SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50\L-50 Generated 11/22/2005 2:33 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 ft ft ft ft ft de 100 ft ftUS ftUS l liSyl.'LS 25ri.UL yb.:i/ ti5tf;i.~/ riti5y.b/ 3yU;i.S(i 4tiU5.yU ~yUb.Ud -1U34.U1 :i/ti(i./1 3.4U 5y//U/tf."15 5tffitSli4.4;i N /U 1U bU.U:itf W 14y 1 / 41.49y 11922.12 85.92 97.27 8585.44 8661.74 3934.15 4636.70 3936.51 -1037.66 3797.29 2.93 5977074.94 586895.04 N 70 20 50.001 W 149 17 40.606 Tie-1n Survey 11953.05 88.05 99.35 8587.07 8663.37 3964.92 4667.58 3967.17 -1042.13 3827.84 9.62 5977070.81 586925.64 N 70 20 49.957 W 149 17 39.713 MWD+IFR+MS 11984.87 88.66 99.47 8587.98 8664.28 3996.65 4699.39 3998.81 -1047.33 3859.22 1.95 5977065.96 586957.07 N 70 20 49.906 W 149 17 38.796 12014.61 88.97 97.65 8588.60 8664.90 4026.28 4729.12 4028.35 -1051.75 3888.62 6.21 5977061.86 586986.52 N 70 20 49.862 W 149 17 37.937 12045.83 91.06 97.50 8588.59 8664.89 4057.35 4760.34 4059.30 -1055.87 3919.57 6.71 5977058.09 587017.51 N 70 20 49.822 W 149 17 37.033 12076.39 93.05 97.75 8587.49 8663.79 4087.73 4790.88 4089.58 -1059.92 3949.84 6.56 5977054.37 587047.82 N 70 20 49.782 W 149 17 36.148 12107.82 93.32 97.06 8585.75 8662.05 4118.95 4822.26 4120.69 -1063.96 3980.96 2.35 5977050.68 587078.97 N 70 20 49.742 W 149 17 35.239 12138.98 91.30 96.89 8584.49 8660.79 4149.89 4853.39 4151.52 -1067.75 4011.86 6.51 5977047.24 587109.91 N 70 20 49.704 W 149 17 34.336 12170.24 90.21 96.69 8584.08 8660.38 4180.95 4884.65 4182.47 -1071.44 4042.90 3.55 5977043.89 587140.99 N 70 20 49.668 W 149 17 33.429 12201.48 90.24 97.50 8583.96 8660.26 4212.01 4915.89 4213.42 -1075.30 4073.90 2.59 5977040.37 587172.03 N 70 20 49.630 W 149 17 3 3 12233.04 89.86 96.46 8583.93 8660.23 4243.37 4947.45 4244.69 -1079.13 4105.22 3.51 5977036.89 587203.39 N 70 20 49.592 W 149 17 12264.15 88.53 93.99 8584.37 8660.67 4274.17 4978.56 4275.37 -1081.97 4136.20 9.02 5977034.40 587234.39 N 70 20 49.564 W 149 17 12294.91 87.81 95.58 8585.35 8661.65 4304.57 5009.30 4305.66 -1084.53 4166.84 5.67 5977032.17 587265.05 N 70 20 49.539 W 149 17 29.808 12326.09 87.84 95.27 8586.53 8662.83 4335.44 5040.46 4336.42 -1087.48 4197.85 1.00 5977029.57 587296.10 N 70 20 49.509 W 149 17 28.902 12356.98 87.77 95.53 8587.72 8664.02 4366.01 5071.32 4366.90 -1090.38 4228.58 0.87 5977027.01 587326.85 N 70 20 49.481 W 149 17 28.004 12388.92 87.60 94.53 8589.01 8665.31 4397.59 5103.24 4398.39 -1093.18 4260.37 3.17 5977024.56 587358.67 N 70 20 49.453 W 149 17 27.075 12420.74 86.43 95.55 8590.66 8666.96 4429.04 5135.02 4429.75 -1095.97 4292.03 4.88 5977022.12 587390.35 N 70 20 49.425 W 149 17 26.150 12451.08 86.64 95.37 8592.50 8668.80 4459.04 5165.30 4459.67 -1098.85 4322.17 0.91 5977019.58 587420.52 N 70 20 49.397 W 149 17 25.269 12482.27 86.50 95.33 8594.36 8670.66 4489.87 5196.43 4490.43 -1101.76 4353.17 0.47 5977017.02 587451.55 N 70 20 49.368 W 149 17 24.364 12512.71 86.19 95.22 8596.30 8672.60 4519.96 5226.81 4520.44 -1104.55 4383.42 1.08 5977014.56 587481.83 N 70 20 49.340 W 149 17 23.480 12544.33 86.33 94.02 8598.37 8674.67 4551.15 5258.36 4551.56 -1107.09 4414.87 3.81 5977012.37 587513.30 N 70 20 49.315 W 149 17 22.561 12575.32 86.23 94.57 8600.38 8676.68 4581.69 5289.29 4582.04 -1109.41 4445.71 1.80 5977010.39 587544.16 N 70 20 49.292 W 149 17 21.660 12605.88 86.06 94.81 8602.43 8678.73 4611.84 5319.78 4612.13 -1111.90 4476.10 0.96 5977008.24 587574.57 N 70 20 49.268 W 149 17 20.772 12637.27 85.88 94.71 8604.64 8680.94 4642.80 5351.09 4643.05 -1114.50 4507.30 0.66 5977005.99 587605.80 N 70 20 49.242 W 149 17 19.860 12668.24 85.85 96.25 8606.87 8683.17 4673.40 5381.98 4673.61 -1117.45 4538.05 4.96 5977003.38 587636.57 N 70 20 49.213 W 14917 18.962 12698.69 85.78 95.63 8609.09 8685.39 4703.52 5412.35 4703.69 -1120.59 4568.26 2.04 5977000.57 587666.81 N 70 20 49.182 W 149 17 18.079 Last MWD+IFR+MS 12730.40 85.09 96.13 8611.62 8687.92 4734.87 5443.96 4735.00 -1123.83 4599.70 2.68 5976997.68 587698.28 N 70 20 49.150 W 149 17 17.160 TD (Projected) 12814.00 85.09 96.13 8618.77 8695.07 4817.51 5527.25 4817.57 -1132.72 4682.52 0.00 5976989.71 587781.18 N 70 20 49.062 W 14917 14.741 Survey Type: Definitive Survey NOTES: GYD GC SS - (Gyrodata -gyro single shots -- Gyrodata gyro orientation surveys. Not to be run above 70 degrees inclination. ) MWD +IFR + MS - (In-field referenced MWD with mull-station analysis and correction applied in post-processing. Assumes a BHA sag correction is applied to enhance inclination accuracy. ) Legal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 2349 FSL 3830 FEL S34 T12N R11 E UM 5978070.34 583086.84 BHL : 1215 FSL 4430 FEL S35 T12N R11 E UM 5976989.71 587781.18 r SurveyEditor Ver SP 1.0 Bld( doc40x_56) S-D\L-50\L-50\L-50 Generated 11/22/2005 2:33 PM Page 6 of 6 ~ PLANT -~15'00'00•, GRID i WELL N0. L-50 REVISION NOTE THIS AS-BUILT DRAWING IS A REISSUE OF A PREVIOUS AS-BUILT DRAWING FOR CONDUCTOR ', SLOT L-SD. SLOT L-SD IS BEING RENAMED TO L-50. ^ N-L (NWE-1) L-111 i ^ L-114 L-5 L-121 ^ L-110 ^ L-SI ^ L-116 ^ L-109 ^ L-SL ^ L-01 ^ L-107 ^ L-03 ^ L-213i ^ L-106i ^ L-105i ^ L-106 ^ L-1231 ^ L-104 ^ L-214i ^ L-102 ^ /, LEGEND NOTES RENAMED CONDUCTOR 1. DATES OF SURVEY: APRIL 18-19, 2001. 2. REFERENCE FIELD BOOK: W001-13 PAGES 36-47. ^ EXISTING CONDUCTOR 3. ALASKA STATE PLANE COORDINATES ARE ZONE 4, NAD 27. GEODETIC POSITIONS ARE NAD 27. 4. BASIS OF HORIZONTAL LOCATION IS L-PAD OPERATOR MONUMENTS. 5. BASIS OF ELEVATION IS NWE RP#1 (REF W001-05-56); ELEVATIONS ARE BP MSL DATUM. 6. MEAN PAD SCALE FACTOR IS 0.999907827. 7. REFERENCE CONDUCTOR AS-BUILT DRAWING FR801-WOL-03-00. LOCATED WITHIN PROTRACTED SEC. 34, T. 12 N., R. 11 E., UMIAT MERIDIAN, ALASKA 3 SKID 582 ^a L-PAD 34`~l~ ^ J L-PAD ~ > - ~ PROJECT Tt2N AREA ~ T11 N ~ _w 3 ~ 2~ ~~ ` -~- VICINITY MAP N.T.S. OF ,~~ A < ~o °° °°9 ~0°49~ °°~ °°°a°°°°°°°°°°°°°°°°°°°°°°°°°°° ~° Richard F. Allison ~s 1 fD6O8 "'y'ESSIONP.~ ~' SURVEYOR'S CERTIFICATE 1 HEREBY CERTIFY THAT I AM PROPERLY REGISTERED AND LICENSED TO PRACTICE LAND SURVEYING IN THE STATE OF ALASKA AND THAT THIS PLAT REPRESENTS A SURVEY MADE BY ME OR UNDER MY DIRECT SUPERVISION AND THAT ALL DIMENSIONS AND OTHER DETAILS ARE CORRECT AS OF SEPTEMBER 8, 2005. WELL A.S.P. PLANT GEODETIC GEODETIC CELLAR SECTION NO. COORDINATES COORDINATE POSIT[ON(DMS) POSITION(D.DD) BOX ELEV. OFFSETS L 50 Y=5,978,070.34' N= 9,819.83 70'21'00.216" 70.3500600' 47 8 2,350' FSL - X= 583,086.84 E= 5,044.92 149'19'31.563" 149.3254342' ' 3,830' FEL r. xooerL "~."... FENnE n ~;.. CHECKED:ALLISON by I DATE: 9/605 ' DRAWIND: GPB WOA L-PAD FR805 WOL 06-00 SHEET: ~ ~~~O~o Joe No: AS-BUILT CONDUCTOR NAME CHANGE 0 9 8 05 RE-NAMED EXISTING WELL l-SD TO L-50 JMF RFA SCALE: 1 OF 1 1^= 1s0' WELL L-SD TO L-50 NO. DATE .REVISION eY CHK ^ N-A (NWE-2) ^ L-2161 ^ L-124 L-1121 L-02 ^ L-122 ^ L-211 i ^ L-1151 ^ L-117 ^ L-„6 ^ L-200 ^ L-202 ^ L-212i ^ L-SPARE ^ L-203 ^ L-216i ^ L-1031 ^ L-215i ^ L-201 ^ L-119i ^ L-210i ^ L-120 c TREE= 4-1/16" 5K CM/ WELLHE4D = . , FMC ~ ACTUATOR = LEO KB. ELEV = 76.3 BF. ELEV = 47.8 KOP = 3900' Max Angle = 95° @ 11734' Datum MD = xxxxx' Datum TV D = xxxxx' 9-5/8" CSG, 40#, L-80, ID= 8.835" i I 2573' I 3.5" L-80, 9.2 Ib/ft, IBT-M Tubing, ID= 2.992" I-i 9059' Minimum ID = 2.813" X Nipples 9-5/8" HOWCO CEMENTER, ID= 6.276" 4919' 4.5" WLEG, ID= 3.958" I-~ 9060' ST MD TVD DEV TYPE VLV LATCH PORT DATE 7 2392' 2392' 1° MMG Dum RK 1.5" 10/22/05 6 4209' 4207 10° MMG Dum RK 1.5" 10/22/05 5 5222' 5203' 10° MMG Dum RK 1.5" 10/22/05 4 6114' 6082' 11° MMG Dum RK 1.5" 10/22/05 3 6995' 6948' 12° MMG Dum RK 1.5" 10/22/05 2 7890' 7748' 41° MMG Dum RK 1.5" 10/22/05 1 8814' 8397' 47° MMG OPEN 1.5" 10/22/05 8968' ~ 3-1/2" X Nipple (2.813" ID) I 8990' Baker S-3 Packer, 7" x 4-1/2" 9016' 3-1/2" X Nipple (2.813" ID) wlPX Plug 9036' 3-1/2" X Nipple (2.813" ID) 9061' ZXP 7" x 5" Liner top Packer w / 11' Tieback Sleeve 7" CSG, 26#, L-80, 0.0383 bpf, ID=6.276"I~ 9206' SLOTTED LINER SUMMARY REF LOG: SWS'VISION' LOG 10/18/2005 ANGLE AT TOP SLOT: 68° Note: Refer to Production DB for historical oerf data SIZE SPF INTERVAL Opn/Sqz DATE 4.5" SLOT 9219'-12396' OPEN 10/19/2005 I I I '~ \ ~ ,\ .\ \ ~ .` ,` ,\~ ~ ~~ PBTD 12518' TAM FREECAP PKR, ID=3.958"I~ 12407'- 12426' I 4-1/2", L-80, 12.6#, BTC SLOTTED LINER I I 12520' I DATE REV BY COMMENTS DATE REV BY COMMENTS 08/24/05 SRK . PROPOSED COMPLETION 10/22/05 TA / RF FINAL COMPLETION PRUDHOE BAY UNff WELL: L-50 PERMff No: 205-136 API No: 50-029-23277-00 SEC 34, T12N, R11 E, 2350' FSL & 3830' FEL BP Exploration (Alaska) L -~ 0 S NOTES: 993' ~ 9-5/8" TAM Port Collar 2000' 3-112" HES X Nippple , ID= 2.813" GAS LIFT MANDRELS ~_ SCHLUMBERGER Survey report Client .................... BP Exploration (Alaska) -Inc. Field.. ................... Prudhoe Bay Well ...................... L-50PB1 API number ...............: 50-029-23277-70 Engineer .................: St. Amour Rig :...................... Nabors 9ES STATE :.................... Alaska ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS............ Mason & Taylor ----- Depth reference ----------------------- Permanent datum..........: Mean Sea Level Depth reference..........: Drillers Pipe Tally GL above permanent.......: 47.80 ft KB above permanent.......: N/A (Topdrive) DF above permanent.......: 76.30 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: 103.30 degrees 17-Oct-2005 10:13:14 Page 1 of 8 Spud date ................: 28-September-2005 Last survey date..........: 17-Oct-05 Total accepted surveys...: 210 MD of first survey.......: 0.00 ft MD of last survey........: 12628.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2005 Magnetic date ............: 29-Sep-2005 Magnetic field strength..: 1151.53 HCNT Magnetic dec (+E/W-).....: 24.47 degrees Magnetic dip .............. 80.85 degrees ----- MWD survey Reference Reference G ............... Reference H ............... Reference Dip ............. Tolerance of G...........: Tolerance of H............ Tolerance of Dip.........: Criteria --------- 1002.68 meal 1151.53 HCNT 80.85 degrees (+/-) 2.50 meal (+/-) 6.00 HCNT (+/-) 0.45 degrees ----- Corrections --------------------------- Magnetic dec (+E/W-).....: 24.47 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 24.47 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 z~~-13~ • SCHLUMBERGER Survey Report 17-Oct-2005 10:13:14 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) (f t) (f t) (ft) (deg) 100f) type (deg) 1 0.00 0.00 207.17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TIP None 2 100.00 0.30 289.54 100.00 100.00 -0.26 0.09 -0.25 0.26 289.54 0.30 BP_GYD GC MS 3 200.00 0.32 320.67 100.00 200.00 -0.74 0.39 -0.67 0.78 300.26 0.17 BP_GYD GC MS 4 300.00 0.50 297.17 100.00 300.00 -1.39 0.81 -1.24 1.48 303.13 0.24 BP_GYD GC MS 5 400.00 0.43 286.18 100.00 399.99 -2.19 1.11 -1.98 2.27 299.23 0.11 BP GYD GC MS 6 7 500.00 600.00 0.94 1.23 189.73 181.26 100.00 100.00 499.99 599.97 -2.51 -2.24 0.41 -1.48 -2.48 -2.65 2.52 3.03 279.29 240.85 1.08 0.33 BP_GYD GC MS BP_GYD GC MS • 8 700.00 1.07 185.17 100.00 699.95 -1.88 -3.48 -2.75 4.44 218.36 0.18 BP_GYD GC MS 9 800.00 0.77 181.04 100.00 799.94 -1.60 -5.08 -2.85 5.82 209.29 0.31 BP_GYD GC MS 10 900.00 0.88 190.06 100.00 899.93 -1.42 -6.51 -3.00 7.16 204.72 0.17 BP GYD GC MS 11 945.18 1.09 197.08 45.18 945.10 -1.43 -7.26 -3.18 7.93 203.67 0.54 BP_ MWD+IFR+MS 12 1039.41 1.27 201.69 94.23 1039.31 -1.64 -9.09 -3.83 9.86 202.86 0.22 BP_ MWD+IFR+MS 13 1133.72 1.23 185.83 94.31 1133.60 -1.66 -11.07 -4.32 11.88 201.33 0.37 BP_ MWD+IFR+MS 14 1226.68 0.53 118.00 92.96 1226.55 -1.11 -12.26 -4.04 12.91 198.25 1.23 BP_ MWD+IFR+MS 15 1320.78 0.69 107.88 94.10 1320.64 -0.13 -12.64 -3.12 13.02 193.86 0.20 BP MWD+IFR+MS 16 1413.98 0.80 90.14 93.20 1413.83 1.06 -12.81 -1.93 12.96 188.59 0.27 BP_ MWD+IFR+MS 17 1507.43 1.60 8.48 93.45 1507.27 1.59 -11.52 -1.09 11.57 185.40 1.80 BP_ MWD+IFR+MS 18 1599.25 1.66 5.30 91.82 1599.05 1.30 -8.93 -0.78 8.96 184.98 0.12 BP_ MWD+IFR+MS 19 1693.74 1.68 10.81 94.49 1693.50 1.05 -6.21 -0.39 6.22 183.61 0.17 BP_ MWD+IFR+MS 20 1787.52 1.64 14.04 93.78 1787.24 1.00 -3.56 0.19 3.56 176.91 0.11 BP MWD+IFR+MS 21 1880.60 1.53 6.04 93.08 1880.28 0.86 -1.03 0.65 1.21 147.86 0.27 BP_ MWD+IFR+MS 22 1974.52 0.94 249.19 93.92 1974.19 0.07 -0.05 0.06. 0.08 133.41 2.26 BP_ MWD+IFR+MS 23 2067.28 0.68 241.45 92.76 2066.94 -0.97 -0.59 -1.14 1.28 242.67 0.30 BP _MWD+IFR+MS 24 2160.40 0.67 230.07 93.12 2160.06 -1.71 -1.20 -2.04 2.37 239.51 0.14 BP_ MWD+IFR+MS 25 2254.67 0.52 66.96 94.27 2254.32 -1.69 -1.39 -2.07 2.49 236.15 1.25 BP MWD+IFR+MS 26 2348.15 0.80 71.67 93.48 2347.80 -0.80 -1.02 -1.06 1.47 226.18 0.30 BP _MWD+IFR+MS 27 2440.98 0.69 75.59 92.83 2440.62 0.25 -0.67 0.10 0.68 171.78 0.13 BP _MWD+IFR+MS 28 2524.51 0.73 67.87 83.53 2524.14 1.13 -0.35 1.08 1.13 107.90 0.12 BP _MWD+IFR+MS 29 2629.34 0.59 75.13 104.83 2628.97 2.15 0.04 2.22 2.22 88.91 0.16 BP _MWD+IFR+MS 30 2723.23 0.45 263.88 93.89 2722.86 2.23 0.13 2.32 2.32 86.87 1.10 BP MWD+IFR+MS SCHLUMBERGER Survey Report 17-Oct-2005 10:13:14 Page 3 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 - (f t) (deg) (deg) (ft) (ft) (ft) (ft} (ft) (ft) (deg) 100f) type (deg) 31 2816.93 0.62 252.44 93.70 2816.55 1.44 -0.07 1.47 1.47 92.54 0.21 BP _MWD+IFR+MS 32 2909.70 0.69 241.55 92.77 2909.32 0.60 -0.48 0.50 0.69 134.04 0.15 BP _MWD+IFR+MS 33 3003.84 0.72 244.12 94.14 3003.45 -0.28 -1.01 -0.53 1.14 207.72 0.05 BP _MWD+IFR+MS 34 3097.53 0.84 237.36 93.69 3097.13 -1.22 -1.64 -1.64 2.32 225.01 0.16 BP _MWD+IFR+MS 35 3190.89 0.79 234.66 93.36 3190.48 -2.12 -2.38 -2.74 3.63 229.03 0.07 BP MWD+IFR+MS 36 37 3284.37 3377.89 0.12 0.24 168.89 79.57 93.48 93.52 3283.96 3377.48 -2.50 -2.29 -2.85 -2.91 -3.25 -3.04 4.32 4.20 228.74 226.22 0.80 0.29 BP BP _MWD+IFR+MS iMWD+IFR+MS 38 3472.08 0.04 96.98 94.19 3471.67 -2.07 -2.88 -2.81 4.02 224.31 0.21 BP _MWD+IFR+MS 39 3566.04 0.00 118.54 93.96 3565.63 -2.04 -2.88 -2.78 4.00 223.94 0.04 BP _MWD+IFR+MS 40 3659.84 0.20 7.63 93.80 3659.43 -2.06 -2.72 -2.75 3.87 225.37 0.21 BP MWD+IFR+MS 41 3753.00 0.22 11.05 93.16 3752.59 -2.08 -2.38 -2.70 3.60 228.56 0.03 BP _MWD+IFR+MS 42 3846.88 0.09 13.88 93.88 3846.46 -2.08 -2.13 -2.65 3.40 231.12 0.14 BP _MWD+IFR+MS 43 3938.33 1.56 198.82 91.45 3937.90 -2.20 -3.24 -3.03 4.44 223.07 1.80 BP _MWD+IFR+MS 44 4031.69 4.35 197.88 93.36 4031.13 -2.61 -7.82 -4.53 9.03 210.09 2.99 BP _MWD+IFR+MS 45 4125.72 7.55 197.92 94.03 4124.64 -3.39 -17.09 -7.52 18.67 203.76 3.40 BP MWD+IFR+MS 46 4219.37 10.35 200.28 93.65 4217.14 -4.91 -30.84 -12.33 33.21 201.80 3.01 BP _MWD+IFR+MS 47 4311.23 11.00 201.17 91.86 4307.41 -7.11 -46.75 -18.36 50.23 201.44 0.73 BP _MWD+IFR+MS 48 4405.76 10.90 200.94 94.53 4400.22 -9.54 -63.51 -24.81 68.18 201.34 0.12 BP _MWD+IFR+MS 49 4498.72 11.16 204.59 92.96 4491.47 -12.47 -79.90 -31.70 85.95 201.64 0.80 BP _MWD+IFR+MS 50 4592.18 11.12 207.26 93.46 4583.17 -16.41 -96.13 -39.59 103.97 202.38 0.55 BP MWD+IFR+MS 51 4685.37 11.11 206.04 93.19 4674.61 -20.56 -112.19 -47.65 121.89 203.01 0.25 BP _MWD+IFR+MS 52 4779.33 10.33 212.04 93.96 4766.93 -25.26 -127.46 -56.09 139.26 203.75 1.45 BP _MWD+IFR+MS • 53 4872.60 10.34 211.82 93.27 4858.69 -30.61 -141.67 -64.94 155.84 204.63 0.04 BP _MWD+IFR+MS 54 4965.96 10.12 211.24 93.36 4950.56 -35.79 -155.80 -73.61 172.31 205.29 0.26 BP _MWD+IFR+MS 55 5058.95 10.02 209.17 92.99 5042.12 -40.52 -169.85 -81.79 188.51 205.71 0.40 BP MWD+IFR+MS 56 5152.59 9.83 209.96 93.64 5134.36 -45.04 -183.88 -89.75 204.62 206.02 0.25 BP _MWD+IFR+MS 57 5251.95 9.71 209.56 99.36 5232.28 -49.82 -198.52 -98.12 221.45 206.30 0.14 BP _MWD+IFR+MS 58 5344.96 9.77 206.74 93.01 5323.95 -53.85 -212.39 -105.54 237.17 206.42 0.52 BP MWD+IFR+MS ~ 59 5437.92 9.27 205.30 92.96 5415.63 -57.24 -226.21 -112.29 252.54 206.40 0.60 BP MWD+IFR+MS 60 5531.97 9.84 208.36 94.05 5508.37 -60.90 -240.13 -119.35 268.15 206.43 0.81 BP MWD+IFR+MS SCHLUMBERGER Survey Report 17-Oct-2005 10:13:14 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 5624.85 9.43 209.65 92.88 5599.94 -65.11 -253.72 -126.88 283.68 206.57 0.50 BP MWD+IFR+MS 62 5718.24 9.80 208.89 93.39 5692.02 -69.40 -267.33 -134.50 299.26 206.71 0.42 BP _ _MWD+IFR+MS 63 5812.02 10.14 208.43 93.78 5784.38 -73.70 -281.58 -142.29 315.49 206.81 0.37 BP MWD+IFR+MS 64 5905.57 9.45 207.24 93.55 5876.57 -77.70 -295.65 -149.73 331.40 206.86 0.77 BP _ MWD+IFR+MS ~ 65 5998.41 10.63 206.49 92.84 5967.99 -81.49 -310.09 -157.03 347.58 206.86 1.28 BP MWD+IFR+MS 66 6091.68 10.95 208.39 93.27 6059.61 -85.76 -325.58 -165.08 365.04 206.89 0.51 BP MWD+IFR+MS 67 6184.66 11.20 212.49 92.98 6150.86 -91.02 -340.97 -174.13 382.86 207.05 0.89 BP _ MWD+IFR+MS 68 6276.68 10.73 215.16 92.02 6241.20 -97.15 -355.51 -183.87 400.24 207.35 0.75 BP _ _MWD+IFR+MS 69 6369.91 10.43 214.71 93.23 6332.84 -103.46 -369.54 -193.67 417.21 207.66 0.33 BP _MWD+IFR+MS 70 6462.74 9.82 213.12 92.83 6424.23 -109.21 -383.08 -202.78 433.44 207.89 0.72 BP MWD+IFR+MS 71 6556.58 9.72 210.20 93.84 6516.71 -114.23 -396.63 -211.14 449.32 208.03 0.54 BP _MWD+IFR+MS 72 6651.13 9.36 207.64 94.55 6609.95 -118.45 -410.34 -218.72 464.99 208.06 0.59 BP MWD+IFR+MS ` 73 6744.54 9.30 196.35 93.41 6702.13 -120.74 -424.31 -224.37 479.98 207.87 1.96 BP MWD+IFR+MS 74 6838.16 9.96 170.22 93.62 6794.48 -117.97 -439.55 -225.12 493.85 207.12 4.68 BP _ MWD+IFR+MS 75 6931.76 11.11 152.62 93.60 6886.52 -108.91 -455.54 -219.60 505.71 205.74 3.63 BP _ MWD+IFR+MS 76 7024.23 11.68 138.50 92.47 6977.18 -95.45 -470.47 -209.30 514.92 203.98 3.07 BP_ MWD+IFR+MS 77 7117.64 13.64 119.76 93.41 7068.36 -77.15 -483.02 -193.46 520.33 201.83 4.84 BP_ MWD+IFR+MS 78 7210.61 16.06 110.91 92.97 7158.23 -53.89 -493.06 -171.93 522.17 199.22 3.56 BP _MWD+IFR+MS 79 7303.59 19.51 106.72 92.98 7246.75 -25.63 -502.12 -145.03 522.64 196.11 3.96 BP MWD+IFR+MS 80 7397.40 23.59 106.19 93.81 7333.99 8.77 -511.86 -111.99 523.97 192.34 4.35 _ BP MWD+IFR+MS 81 7491.76 27.19 106.68 94.36 7419.22 49.16 -523.32 -73.19 528.41 187.96 3.82 BP_ MWD+IFR+MS 82 7584.04 30.04 107.84 92.28 7500.22 93.24 -536.45 -31.00 537.34 183.31 3.15 BP_ MWD+IFR+MS 83 7678.55 33.74 106.31 94.51 7580.45 143.05 -551.07 16.72 551.33 178.26 4.01 BP MWD+IFR+MS 84 7772.02 36.48 103.85 93.47 7656.91 196.77 -565.02 68.63 569.17 173.07 3.30 _ BP_ MWD+IFR+MS 85 7865.72 40.48 101.04 93.70 7730.26 255.04 -577.51 125.55 591.00 167.73 4.66 BP MWD+IFR+MS 86 7957.61 43.89 101.16 91.89 7798.33 316.69 -589.39 186.09 618.08 162.48 3.71 BP_ MWD+IFR+MS 87 8051.49 46.85 100.65 93.88 7864.28 383.44 -602.03 251.69 652.52 157.31 3.18 BP_ MWD+IFR+MS 88 8145.00 46.24 100.43 93.51 7928.60 451.24 -614.44 318.43 692.05 152.61 0.67 BP_ MWD+IFR+MS 89 8238.36 45.49 99.53 93.36 7993.61 518.13 -626.06 384.42 734.66 148.45 1.06 BP MWD+IFR+MS 90 8330.95 44.83 98.34 92.59 8058.90 583.59 -636.26 449.27 778.89 144.77 1.16 _ BP MWD+IFR+MS • • SCHLLTMBERGER Survey Report 17-Oct-2005 10:13:14 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 - --- (f t) -------- (deg) ------ (deg) ------- (ft) ------ (ft) -------- (ft) -------- (f t) -------- (ft) -------- (ft) ------- (deg) -------- 100f) ----- - type (deg) ---- ------ --- 91 -------- 8425.65 ------ 45.84 ------- 98.74 ------ 94.70 -------- 8125.47 -------- 650.71 -------- -646.26 -------- 515.87 ------- 826.91 -------- 141.40 ----- 1.11 BP ----- ------ _MWD+IFR+MS 92 8518.07 45.70 98.58 92.42 8189.93 716.72 -656.23 581.34 876.70 138.46 0.20 BP _MWD+IFR+MS 93 8611.81 44.96 97.95 93.74 8255.83 783.12 -665.82 647.31 928.62 135.81 0.92 BP_ MWD+IFR+MS 94 8705.83 45.59 99.75 94.02 8322.00 849.72 -676.10 713.31 982.81 133.47 1.52 BP_ MWD+IFR+MS 95 8798.96 46.70 99.62 93.13 8386.52 916.74 -687.40 779.51 1039.30 131.41 1.20 BP MWD+IFR+MS 96 97 8891.57 8984.90 49.54 54.06 101.37 101.81 92.61 93.33 8448.34 8506.04 985.60 1058.89 -699.98 -714.72 847.29 919.12 1099.03 1164.30 129.56 127.87 3.37 4.86 BP BP~ MWD+IFR+MS MWD+IFR+MS • 98 9077.94 58.50 103.53 93.04 8557.68 1136.25 -731.72 994.59 1234.76 126.34 5.01 BP_ MWD+IFR+MS 99 9141.12 61.74 102.14 63.18 8589.15 1191.02 -743.87 1048.00 1285.16 125.37 5.47 BP_ MWD+IFR+MS 100 9210.57 66.90 100.89 69.45 8619.24 1253.55 -756.35 1109.31 1342.62 124.29 7.60 BP INC+BLIND 101 9229.83 71.66 100.55 19.26 8626.05 1271.54 -759.70 1127.00 1359.15 123.98 24.77 BP ~ INC+BLIND 102 9239.97 74.27 100.36 10.14 8629.02 1281.23 -761.46 1136.54 1368.04 123.82 25.80 BP_ INC+BLIND 103 9273.09 81.65 99.77 33.12 8635.93 1313.54 -767.11 1168.41 1397.73 123.29 22.35 BP_ MWD+IFR+MS 104 9308.62 85.02 97.62 35.53 8640.05 1348.71 -772.44 1203.29 1429.88 122.70 11.23 BP J MWD+IFR+MS 105 9339.20 84.26 98.83 30.58 8642.91 1379.04 -776.80 1233.42 1457.65 122.20 4.66 BP MWD+IFR+MS 106 9370.87 83.20 101.30 31.67 8646.37 1410.47 -782.30 1264.41 1486.85 121.75 8.44 BP_ MWD+IFR+MS 107 9402.70 84.58 104.13 31.83 8649.76 1442.11 -789.26 1295.28 1516.80 121.36 9.85 BP_ MWD+IFR+MS 108 9432.79 87.60 103.60 30.09 8651.81 1472.12 -796.46 1324.42 1545.46 121.02 10.19 BP_ MWD+IFR+MS 109 9465.44 90.07 104.37 32.65 8652.47 1504.76 -804.35 1356.10 1576.69 120.67 7.92 BP_ MWD+IFR+MS 110 9495.29 92.85 104.63 29.85 8651.71 1534.59 -811.82 1384.98 1605.37 120.38 9.35 BP MWD+IFR+MS 111 9527.02 93.60 103.93 31.73 8649.93 1566.27 -819.63 1415.68 1635.83 120.07 3.23 BP_ MWD+IFR+MS 112 9558.41 93.77 102.54 31.39 8647.91 1597.59 -826.80 1446.18 1665.84 119.76 4.45 BP_ MWD+IFR+MS • 113 9588.96 93.70 99.65 30.55 8645.92 1628.05 -832.67 1476.09 1694.75 119.43 9.44 BP_ MWD+IFR+MS 114 9620.87 92.91 98.16 31.91 8644.08 1659.81 -837.60 1507.56 1724.62 119.06 5.28 BP_ MWD+IFR+MS 115 9651.38 92.92 97.34 30.51 8642.53 1690.14 -841.71 1537.75 1753.04 118.69 2.68 BP MWD+IFR+MS 116 9682.58 90.89 97.07 31.20 8641.49 1721.15 -845.62 1568.69 1782.09 118.33 6.56 BP_ MWD+IFR+MS 117 9713.23 89.76 97.51 30.65 8641.32 1751.63 -849.51 1599.09 1810.73 117.98 3.96 BP_ MWD+IFR+MS 118 9744.89 90.00 98.95 31.66 8641.38 1783.16 -854.04 1630.42 1840.56 117.65 4.61 BP_ MWD+IFR+MS 119 9775.84 89.52 98.63 30.95 8641.51 1814.02 -858.77 1661.01 1869.87 117.34 1.86 BP_ MWD+IFR+MS 120 9806.28 89.45 98.75 30.44 8641.79 1844.36 -863.37 1691.10 1898.74 117.05 0.46 BP MWD+IFR+MS C SCHLUMBERGER Survey Report 17-Oct-2005 10:13:14 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) (f t) (deg) 100f) type (deg) 121 9837.91 89.25 98.13 31.63 8642.14 1875.87 -868.01 1722.38 1928.74 116.75 2.06 BP MWD+IFR+MS 122 9869.33 88.59 97.80 31.42 8642.74 1907.15 -872.36 1753.49 1958.51 116.45 2.35 BP _ MWD+IFR+MS 123 9900.22 88.22 97.71 30.89 8643.59 1937.88 -876.53 1784.09 1987.78 116.17 1.23 BP_ _ MWD+IFR+MS 124 9931.70 88.29 96.66 31.48 8644.55 1969.17 -880.46 1815.31 2017.56 115.87 3.34 BP MWD+IFR+MS 125 9961.17 88.11 96.08 29.47 8645.48 1998.41 -883.73 1844.58 2045.35 115.60 2.06 _ BP MWD+IFR+MS 126 9992.58 87.98 95.96 31.41 8646.55 2029.55 -887.02 1875.80 2074.95 115.31 0.56 BP MWD+IFR+MS 127 10022.35 86.50 96.22 29.77 8647.98 2059.05 -890.18 1905.36 2103.05 115.04 5.05 _ BP_ MWD+IFR+MS 128 10053.54 85.68 96.12 31.19 8650.11 2089.92 -893.52 1936.30 2132.52 114.77 2.65 BP MWD+IFR+MS 129 10084.38 85.85 96.63 30.84 8652.39 2120.45 -896.94 1966.87 2161.73 114.51 1.74 _ BP_ MWD+IFR+MS 130 10115.60 88.01 96.44 31.22 8654.06 2151.41 -900.49 1997.84 2191.40 114.26 6.95 BP MWD+IFR+MS 131 10147.03 89.11 96.53 31.43 8654.85 2182.61 -904.03 2029.06 2221.34 114.02 3.51 BP_ MWD+IFR+MS 132 10179.13 89.04 96.41 32.10 8655.37 2214.48 -907.65 2060.95 2251.96 113.77 0.43 BP MWD+IFR+MS 133 10209.38 88.94 96.16 30.25 8655.90 2244.49 -910.96 2091.01 2280.83 113.54 0.89 _ BP MWD+IFR+MS 134 10240.10 88.87 94.62 30.72 8656.49 2274.92 -913.85 2121.59 2310.03 113.30 5.02 _ BP MWD+IFR+MS 135 10271.62 88.90 95.51 31.52 8657.10 2306.10 -916.63 2152.98 2339.99 113.06 2.82 _ BP MWD+IFR+MS 136 10302.23 89.38 94.89 30.61 8657.56 2336.41 -919.40 2183.46 2369.14 112.83. 2.56 BP_ MWD+IFR+MS 137 10333.71 89.3$ 93.63 31.48 8657.90 2367.49 -921.74 2214.85 2398.99 112.60 4.00 BP_ MWD+IFR+MS 138 10365.23 88.87 93.71 31.52 8658.38 2398.56 -923.76 2246.30 2428.83 112.35 1.64 BP_ MWD+IFR+MS 139 10396.46 89.62 94.01 31.23 8658.79 2429.37 -925.86 2277.46 2458.46 112.12 2.59 BP_ MWD+IFR+MS 140 10427.45 92.02 96.10 30.99 8658.35 2460.03 -928.59 2308.32 2488.10 111.91 10.27 BP MWD+IFR+MS 141 10459.59 92.84 95.11 32.14 8656.99 2491.85 -931.73 2340.28 2518.93 111.71 4.00 BP MWD+IFR+MS 142 10490.18 92.81 94.42 30.59 8655.48 2522.07 -934.27 2370.72 2548.17 111.51 2.26 -_ BP MWD+IFR+MS 143 10521.24 91.37 92.64 31.06 8654.35 2552.65 -936.18 2401.70 2577.71 111.30 7.37 BP MWD+IFR+MS 144 10552.32 89.79 91.54 31.08 8654.03 2583.14 -937.31 2432.76 2607.08 111.07 6.19 _ BP_ MWD+IFR+MS 145 10584.15 89.69 91.89 31.83 8654.18 2614.32 -938.26 2464.57 2637.13 110.84 1.14 BP MWD+IFR+MS 146 10615.09 89.14 92.39 30.94 8654.49 2644.67 -939.42 2495.49 2666.45 110.63 2.40 BP_ MWD+IFR+MS 147 10645.62 88.63 92.30 30.53 8655.09 2674.64 -940.67 2525.99 2695.45 110.43 1.70 BP_ MWD+IFR+MS 148 10677.17 87.36 93.31 31.55 8656.19 2705.64 -942.21 2557.48 2725.52 110.22 5.14 BP_ MWD+IFR+MS 149 10708.21 87.09 93.15 31.04 8657.69 2736.17 -943.96 2588.44 2755.19 110.04 1.01 BP_ MWD+IFR+MS 150 10740.30 86.29 93.00 32.09 8659.55 2767.69 -945.67 2620.43 2785.84 109.84 2.54 BP MWD+IFR+MS SCHLUMBERGER Survey Report 17-Oct-2005 10:13:14 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 10771.80 85.54 92.13 31.50 8661.79 2798.56 -947.08 2651.81 2815.86 109.65 3.64 BP _MWD+IFR+MS 152 10801.70 87.29 93.12 29.90 8663.66 2827.89 -948.45 2681.62 2844.41 109.48 6.72 BP _MWD+IFR+MS 153 10833.25 88.29 93.89 31.55 8664.88 2858.95 -950.38 2713.09 2874..73 109.31 4.00 BP _MWD+IFR+MS 154 10864.28 88.39 92.37 31.03 8665.78 2889.48 -952.07 2744.06 2904.53 109.13 4.91 BP _MWD+IFR+MS 155 10895.30 88.53 92.39 31.02 8666.61 2919.93 -953.36 2775.04 2934.24 108.96 0.46 BP MWD+IFR+MS 156 10925.99 88.63 92.48 30.69 8667.37 2950.06 -954.66 2805.69 2963.66 108.79 0.44 BP MWD+IFR+MS 157 10957.14 88.56 93.93 31.15 8668.13 2980.72 -956.40 2836.78 2993.67 108.63 4.66 BP _ _MWD+IFR+MS 158 10987.87 88.63 92.47 30.73 8668.89 3010.96 -958.12 2867.46 3023..29 108.48 4.75 BP _MWD+IFR+MS 159 11018.23 88.87 92.39 30.36 8669.55 3040.77 -959.40. 2897.78 3052.47 108.32 0.83 BP _MWD+IFR+MS 160 11050.13 89.21 92.54 31.90 8670.08 3072.10 -960.77 2929.65 3083.17 108.16 1.16 BP MWD+IFR+MS 161 11080.88 89.28 93.40 30.75 8670.49 3102.35 -962.37 2960.35 3112.85 108.01 2.81 BP _MWD+IFR+MS 162 11112.25 89.38 92.84 31.37 8670.86 3133.22 -964.07 2991.68 3143.18 107.86 1.81 BP_ MWD+IFR+MS 163 11142.97 89.35 92.74 30.72 8671.20 3163.42 -965.57 3022.36 3172.85 107.72 0.34 BP_ MWD+IFR+MS 164 11174.73 89.28 93.80 31.76 8671.58 3194.70 -967.38 3054.06 3203.61 107.58 3.34 BP_ MWD+IFR+MS 165 11206.65 89.49 94.41 31.92 8671.92 3226.20 -969.67 3085.90 3234.66 107.44 2.02 BP MWD+IFR+MS 166 11238.13 88.94 93.47 31.48 8672.35 3257.26 -971.83 3117.30 3265.27 107.32 3.46 BP_ MWD+IFR+MS 167 11268.25 88.18 94.69 30.12 8673.11 3286.98 -973.97 3147.33 3294.59 107.20 4.77 BP_ MWD+IFR+MS 168 11299.00 88.35 95.20 30.75 8674.04 3317.39 -976.62 3177.96 3324.63 107.08 1.75 BP_ MWD+IFR+MS 169 11331.25 88.35 95.34 32.25 8674.97 3349.31 -979.58 3210.06 3356.19 106.97 0.43 BP_ MWD+IFR+MS 170 11361.37 88.90 96.89 30.12 8675.69 3379.19 -982.79 3240.00 3385.77 106.87 5.46 BP MWD+IFR+MS 171 11393.08 92.09 95.81 31.71 8675.42 3410.66 -986.30 3271.50 3416.95 106.78 10.62 BP_ MWD+IFR+MS 172 11424.12 93.54 95.65 31.04 8673.89 3441.39 -989.39 3302.35 3447.38 106.68 4.70 BP_ MWD+IFR+MS 173 11455.88 91.89 95.40 31.76 8672.39 3472.82 -992.45 3333.93 3478.51 106.58 5.25 BP_ MWD+IFR+MS 174 11485.63 91.54 94.48 29.75 8671.50 3502.24 -995.01 3363.55 3507.64 106.48 3.31 BP_ MWD+IFR+MS 175 11517.56 91.47 94.47 31.93 8670.66 3533.78 -997.50 3395.37 3538.87 106.37 0.22 BP MWD+IFR+MS 176 11549.08 91.89 95.79 31.52 8669.74 3564.97 -1000.31 3426.75 3569.77 106.27 4.39 BP_ MWD+IFR+MS 177 11579.77 92.06 94.62 30.69 8668.68 3595.33 -1003.10 3457.30 3599.88 106.18 3.85 BP_ MWD+IFR+MS 178 11610.60 92.37 94.51 30.83 8667.49 3625.78 -1005.55 3488.01 3630.06 106.08 1.07 BP_ MWD+IFR+MS 179 11641.53 92.95 94.86 30.93 8666.05 3656.33 -1008.07 3518.80 3660.35 105.99 2.19 BP_ MWD+IFR+MS 180 11672.15 93.32 95.50 30.62 8664.38 3686.60 -1010.83 3549.25 3690.39 105.90 2.41 BP MWD+IFR+MS ,V SCHLUMBERGER Survey Report 17-Oct-2005 10:13:14 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) ------- (f t) ------ (ft) -------- (ft) -------- (f t) -------- (f t) -------- (ft) ------- (deg) -------- 100f) ----- type (deg) ----- ------ --- 181 -------- 11703.34 ------ 94.29 ------- 95.07 ------ 31.19 -------- 8662.31 -------- 3717.41 -------- -1013.70 -------- 3580.24 ------- 3720.98 -------- 105.81 ----- 3.40 BP ----- ------ MWD+IFR+MS ~ 182 11733.68 95.05 96.71 30.34 8659.84 3747.40 -1016.80 3610.32 3750.77 105.73 5.94 BP MWD+IFR+MS _ 183 11766.85 93.88 95.87 33.17 8657.25 3780.22 -1020.42 3643.19 3783.39 105.65 4.34 BP _MWD+IFR+MS 184 11796.37 91.23 96.15 29.52 8655.94 3809.47 -1023.51 3672.51 3812.47 105.57 9.03 BP _MWD+IFR+MS 185 11828.01 87.84 95.89 31.64 8656.20 3840.85 -1026.83 3703.97 3843.67 105.49 10.75 BP MWD+IFR+MS 186 11859.45 86.95 96.92 31.44 8657.63 3872.03 -1030.33 3735.18 3874..68 105.42 4.33 BP MWD+IFR+MS 187 11891.25 86.02 96.37 31.80 .8659.57 3903.56 -1034.01 3766.71 3906.06 105.35 3.40 BP _ MWD+IFR+MS ~ 188 11922.12 85.92 97.27 30.87 8661.74 3934.15 -1037.66 3797.29 3936.51 105.28 2.93 BP MWD+IFR+MS ` 189 11953.05 88.05 99.35 30.93 8663.3? 3964.92. -1042.13 3827.84 3967.17 105.23 9.62 BP MWD+IFR+MS ~ 190 11983.93 89.90 99.98 30.88 8663.92 3995.73 -1047.31 3858.28 3997.90 105.19 6.33 BP MWD+IFR+MS 191 12015.53 92.13 98.88 31.60 8663.36 4027.25 -1052.49 3889.45 4029.33 105.14 7.87 BP _MWD+IFR+MS 192 12046.10 92.19 99.66 30.57 8662.21 4057.72 -1057.41 3919.59 4059.72 105.10 2.56 BP _MWD+IFR+MS 193 12077.91 91.75 98.17 31.81 8661.12 4089.42 -1062.33 3951.00 4091.33 105.05 4.88 BP_ MWD+IFR+MS 194 12109.07 91.71 98.06 31.16 8660.18 4120.44 -1066.73 3981.84 4122.25 105.00 0.38 BP_ MWD+IFR+MS 195 12139.?4 91.68 100.00 30.67 8659.27 4151.01 -1071.54 4012.11 4152.74 104.95 6.32 BP MWD+IFR+MS 196 12171.09 91.20 99.34 31.35 8658.48 4182.29 -1076.81 4043.00 4183.95 104.91 2.60 BP_ MWD+IFR+MS 197 12202.27 91.17 99.75 31.18 8657.84 4213.39 -1081.97 4073.75 4214.98 104.87 1.32 BP_ MWD+IFR+MS 198 12233.02 91.03 98.60 30.75 8657.25 4244.06 -1086.88 4104.10 4245.58 104.83 3.77 BP_ MWD+IFR+MS 199 12263.99 90.10 99.36 30.97 8656.94 4274.94 -1091.71 4134.69 4276.38 104.79 3.88 BP J MWD+IFR+MS 200 12295.14 90.00 99.78 31.15 8656.91 4306.02 -1096.89 4165.40 4307.40 104.75 1.39 BP MWD+IFR+MS 201 12326.30 89.93 97.61 31.16 8656.93 4337.08 -1101.60 4196.20 4338.39 104.71 6.97 BP_ MWD+IFR+MS 202 12357.94 89.21 97.57 31.64 8657.17 4368.56 -1105.78 4227.56 4369.79 104.66 2.28 BP_ MWD+IFR+MS . 203 12389.92 89.04 99.46 31.98 8657.66 4400.42 -1110.51 4259.19 4401.58 104.61 5.93 BP_ MWD+IFR+MS 204 12420.33 89.07 99.52 30.41 8658.16 4430.76 -1115.53 4289.18 4431.87 104.58 0.22 BP_ MWD+IFR+MS 205 12451.72 88.66 97.06 31.39 8658.78 4462.02 -1120.05 4320.23 4463.06 104.53 7.94 BP MWD+IFR+MS 206 12482.68 88.01 97.56 30.96 8659.68 4492.80 -1123.99 4350.92 4493.76 104.48 2.65 BP_ MWD+IFR+MS 207 12513.54 88.08 98.64 30.86 8660.73 4523.52 -1128.33 4381.46 4524.41 104.44 3.50 BP_ MWD+IFR+MS 208 12544.51 88.35 99.57 30.97 8661.70 4554.39 -1133.23 4412.02 4555.23 104.41 3.13 BP_ MWD+IFR+MS 209 12576.03 89.07 97.87 31.52 8662.41 4585.80 -1138.01 4443.17 4586.59 104.37 5.86 BP_ MWD+IFR+MS 210 12628.00 91.50 97.87 51.97 8662.15 4637.53 -1145.13 4494.65 4638.23 104.29 4.68 Projected to TD [(c)Z005 IDEAL ID10 2C O1] SCHLUMBERGER Survey report Client .................... BP Exploration (Alaska) Inc. Field .....:............... Prudhoe Bay Well ......................:•k;~=50 API number ...............: 50-029-23277-00 Engineer .................. St. Amour Rig :...................... Nabors 9ES STATE :.................... Alaska ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS...........: Mason & Taylor ----- Depth reference ----------------------- Permanent datum..........: Mean Sea Level Depth reference..........: Driller's Pipe Tally GL above permanent.......: 47.80 ft KB above permanent.......: N/A (Top Drive) DF above permanent.......: 76.30 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: 103.30 degrees ((c)2005 IDEAL ID10_2C_O1] 18-Oct-2005 15:49:54 Page 1 of 9 Spud date ................. 29-September-2005 Last survey date.........: 18-Oct-05 Total accepted surveys...: 215 MD of first survey.......: 0.00 ft MD of last survey........: 12814.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2005 Magnetic date ............: 29-Sep-2005 Magnetic field strength..: 1151.53 HCNT Magnetic dec (+E/W-).....: 24.47 degrees Magnetic dip .............: 80.85 degrees ----- MWD survey Reference Reference G ............... Reference H ............... Reference Dip ............: Tolerance of G............ Tolerance of H...........: Tolerance of Dip.........: Criteria --------- 1002.68 meal 1151.53 HCNT 80.85 degrees (+/-) 2.50 meal (+/-) 6.00 HCNT (+/-) 0.45 degrees ----- Corrections --------------------------- Magnetic dec (+E/W-).....: 24.47 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 24.47 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 aus'•~3~0 i • SCHLUMBERGER Survey Report 18-Oct-2005 15:49:54 Page 2 of 9 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) (f t) (ft) (f t) (ft) (ft) (ft) (deg) 100f) type (deg) 1 0.00 0.00 207.17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TIP 2 100.00 0.30 289.54 100.00 100.00 -0.26 0.09 -0.25 0.26 289.54 0.30 BP GYD GC MS 3 200.00 0.32 320.57 100.00 200.00 -0.74 0.39 -0.67 0.78 300.26 0.17 BP _ GYD GC MS 4 300.00 0.50 297.17 100.00 300.00 -1.39 0.81 -1.24 1.48 303.13 0.24 BP _ GYD GC MS 5 400.00 0.43 286.18 100.00 399.99 -2.19 1.11 -1.98 2.27 299.23 0.11 BP _ GYD GC MS 6 500.00 0.94 189.73 100.00 499.99 -2.51 0.41 -2.48 2.52 279.29 1.08 BP GYD GC MS 7 600.00 1.23 181.26 100.00 599.97 -2.24 -1.48 -2.65 3.03 240.85 0.33 BP _ GYD GC MS 8 700.00 1.07 185.17 100.00 699.95 -1.88 -3.48 -2.75 4.44 218.36 0.18 BP _ GYD GC MS 9 800.00 0.77 181.04 100.00 799.94 -1.60 -5.08 -2.85 5.82 209.29 0.31 BP _ GYD GC MS 10 900.00 0.88 190.06 100.00 899.93 -1.42 -6.51 -3.00 7.16 204.72 0.17 BP _ GYD GC MS 11 945.18 1.09 197.08 45.18 945.10 -1.43 -7.26 -3.18 7.93 203.67 0.54 BP MWD+IFR+MS 12 1039.41 1.27 201.69 94.23 1039.31 -1.64 -9.09 -3.83 9.86 202.86 0.22 BP _ MWD+IFR+MS 13 1133.72 1.23 185.83 94.31 1133.60 -1.66 -11.07 -4.32 11.88 201.33 0.37 BP _ MWD+IFR+MS 14 1226.68 0.53 118.00 92.96 1226.55 -l.ll -12.26 -4.04 12.91 198.25 1.23 BP _ MWD+IFR+MS 15 1320.78 0.69 107.88 94.10 1320.64 -0.13 -12.64 -3.12 13.02 193.86 0.20 BP _ MWD+IFR+MS 16 1413.98 0.80 90.14 93.20 1413.83 1.06 -12.81 -1.93 12.96 188.59 0.27 BP MWD+IFR+MS 17 1507.43 1.60 8.48 93.45 1507.27 1.59 -11.52 -1.09 11.57 185.40 1.80 BP _ MWD+IFR+MS 18 1599.25 1.66 5.30 91.82 1599.05 1.30 -8.93 -0.78 8.96 184.98 0.12 BP _ MWD+IFR+MS 19 1693.74 1.68 10.81 94.49 1693.50 1.05 -6.21 -0.39 6.22 183.61 0.17 BP _ MWD+IFR+MS 20 1787.52 1.64 14.04 93.78 1787.24 1.00 -3.56 0.19 3.56 176.91 0.11 BP _ MWD+IFR+MS 21 1880.60 1.53 6.04 93.08 1880.28 0.86 -1.03 0.65 1.21 147.86 0.27 BP MWD+IFR+MS ~ '~ 22 1974.52 0.94 249.19 93.92 1974.19 0.07 -0.05 0.06 0.08 133.41 2.26 BP _ MWD+IFR+MS 23 2067.28 0.68 241.45 92.76 2066.94 -0.97 -0.59 -1.14 1.28 242.67 0.30 BP _ MWD+IFR+MS 24 2160.40 0.67 230.07 93.12 2160.06 -1.71 -1.20 -2.04 2.37 239.51 0.14 BP _ MWD+IFR+MS 25 2254.67 0.52 66.96 94.27 2254.32 -1.69 -1.39 -2.07 2.49 236.15 1.25 BP _ MWD+IFR+MS 26 2348.15 0.80 71.67 93.48 2347.80 -0.80 -1.02 -1.06 1.47 226.18 0.30 BP MWD+IFR+MS 27 2440.98 0.69 75.59 92.83 2440.62 0.25 -0.67 0.10 0.68 171.78 0.13 BP _ _MWD+IFR+MS 28 2524.51 0.73 67.87 83.53 2524.14 1.13 -0.35 1.08 1.13 107.90 0.12 BP MWD+IFR+MS 29 2629.34 0.59 75.13 104.83 2628.97 2.15 0.04 2.22 2.22 88.91 0.16 BP _ _MWD+IFR+MS 30 2723.23 0.45 263.88 93.89 2722.86 2.23 0.13 2.32 2.32 86.87 1.10 BP MWD+IFR+MS [(c)2005 IDEAL ID10 2C O1] _ SCHLUMBERGER Survey Report 18-Oct-2005 15:49:54 Page 3 of 9 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) (f t) (f t) (deg) l0of) type (deg) 31 2816.93 0.62 252.44 93.70 2816.55 1.44 -0.07 1.47 1.47 92.54 0.21 BP MWD+IFR+MS 32 2909.70 0.69 241.55 92.77 2909.32 0.60 -0.48 0.50 0.69 134.04 0.15 BP _ _MWD+IFR+MS 33 3003.84 0.72 244.12 94.14 3003.45 -0.28 -1.01 -0.53 1.14 207.72 0.05 BP MWD+IFR+MS 34 3097.53 0.84 237.36 93.69 3097.13 -1.22 -1.64 -1.64 2.32 225.01 0.16 BP _ MWD+IFR+MS 35 3190.89 0.79 234.66 93.36 3190.48 -2.12 -2.38 -2.74 3.63 229.03 0.07 BP _ MWD+IFR+MS 36 3284.37 0.12 168.89 93.48 3283.96 -2.50 -2.85 -3.25 4.32 228.74 0.80 BP MWD+IFR+MS 37 3377.89 0.24 79.57 93.52 3377.48 -2.29 -2.91 -3.04 4.20 226.22 0.29 BP _ MWD+IFR+MS 38 3472.08 0.04 96.98 94.19 3471.67 -2.07 -2.88 -2.81 4.02 224.31 0.21 BP _ MWD+IFR+MS 39 3566.04 0.00 118.54 93.96 3565.63 -2.04 -2.88 -2.78 4.00 223.94 0.04 BP _ MWD+IFR+MS 40 3659.84 0.20 7.63 93.80 3659.43 -2.06 -2.72 -2.75 3.87 225.37 0.21 BP _ MWD+IFR+MS 41 3753.00 0.22 11.05 93.16 3752.59 -2.08 -2.38 -2.70 3.60 228.56 0.03 BP MWD+IFR+MS 42 3846.88 0.09 13.88 93.88 3846.46 -2.08 -2.13 -2.65 3.40 231.12 0.14 BP _ MWD+IFR+MS 43 3938.33 1.56 198.82 91.45 3937.90 -2.20 -3.24 -3.03 4.44 223.07 1.80 BP _ MWD+IFR+MS 44 4031.69 4.35 197.88 93.36 4031.13 -2.61 -7.82 -4.53 9.03 210.09 2.99 BP _ MWD+IFR+MS 45 4125.72 7.55 197.92 94.03 4124.64 -3.39 -17.09 -7.52 18.67 203.76 3.40 BP _ MWD+IFR+MS 46 4219.37 10.35 200.28 93.65 4217.14 -4.91 -30.84 -12.33 33.21 201.80 3.01 BP _MWD+IFR+MS 47 4311.23 11.00 201.17 91.86 4307.41 -7.11 -46.75 -18.36 50.23 201.44 0.73 BP _MWD+IFR+MS 48 4405.76 10.90 200.94 94.53 4400.22 -9.54 -63.51 -24.81 68.18 201.34 0.12 BP MWD+IFR+MS 49 4498.72 11.16 204.59 92.96 4491.47 -12.47 -79.90 -31.70 85.95 201.64 0.80 BP _ MWD+IFR+MS 50 4592.18 11.12 207.26 93.46 4583.17 -16.41 -96.13 -39.59 103.97 202.38 0.55 BP _ MWD+IFR+MS 51 4685.37 11.11 206.04 93.19 4674.61 -20.56 -112.19 -47.65 121.89 203.01 0.25 BP MWD+IFR+MS 52 4779.33 10.33 212.04 93.96 4766.93 -25.26 -127.46 -56.09 139.26 203.75 1.45 BP _ MWD+IFR+MS 53 4872.60 10.34 211.82 93.27 4858.69 -30.61 -141.67 -64.94 155.84 204.63 0.04 BP _ _MWD+IFR+MS 54 4965.96 10.12 211.24 93.36 4950.56 -35.79. -155.80 -73.61 172.31 205.29 0.26 BP _MWD+IFR+MS 55 5058.95 10.02 209.17 92.99 5042.12 -40.52 -169.85 -81.79 188.51 205.71 0.40 BP MWD+IFR+MS 56 5152.59 9.83 209.96 93.64 5134.36 -45.04 -183.88 -89.75 204.62 206.02 0.25 BP MWD+IFR+MS 57 5251.95 9.71 209.56 99.36 5232.28 -49.82 -198.52 -98.12 221.45 206.30 0.14 BP _ _MWD+IFR+MS 58 5344.96 9.77 206.74 93.01 5323.95 -53.85 -212.39 -105.54 237.17 206.42 0.52 BP _MWD+IFR+MS 59 5437.92 9.27 205.30 92.96 5415.63 -57.24 -226.21 -112.29 252.54 206.40 0.60 BP MWD+IFR+MS 60 5531.97 9.84 208.36 94.05 5508.37 -60.90 -240.13 -119.35 268.15 206.43 0.81 BP _ MWD+IFR+MS ((c)2005 IDEAL ID10 2C O1] _ SCHLUMBERGER Survey Report 18- Oct-2005 15:49:54 Page 4 of 9 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) (f t) (deg) 100f) type (deg) 61 5624.85 9.43 209.65 92.88 5599.94 -65.11 -253.72 -126.88 283.68 206.57 0.50 BP _MWD+IFR+MS 62 5718.24 9.80 208.89 93.39 5692.02 -69.40 -267.33 -134.50 299.26 206.71 0.42 BP _MWD+IFR+MS 63 5812.02 10.14 208.43 93.78 5784.38 -73.70 -281.58 -142.29 315.49 206.81 0.37 BP _MWD+IFR+MS 64 5905.57 9.45 207.24 93.55 5876.57 -77.70 -295.65 -149.73 331.40 206.86 0.77 BP _MWD+IFR+MS 65 5998.41 10.63 206.49 92.84 5967.99 -81.49 -310.09 -157.03 347.58 206.86 1.28 BP MWD+IFR+MS 66 6091.68 10.95 208.39 93.27 6059.61 -85.76 -325.58 -165.08 365.04 206.89 0.51 BP _MWD+IFR+MS 67 6184.66 11.20 212.49 92.98 6150.86 -91.02 -340.97 -174.13 382.86 207.05 0.89 BP _MWD+IFR+MS 68 6276.68 10.73 215.16 92.02 6241.20 -97.15 -355.51 -183.87 400.24 207.35 0.75 BP _MWD+IFR+MS 69 6369.91 10.43 214.71 93.23 6332.84 -103.46 -369.54 -193.67 417.21 207.66 0.33 BP _MWD+IFR+MS 70 6462.74 9.82 213.12 92.83 6424.23 -109.21 -383.08 -202.78 433.44 207.89 0.72 BP MWD+IFR+MS 71 6556.58 9.72 210.20 93.84 6516.71 -114.23 -396.63 -211.14 449.32 208.03 0.54 BP _MWD+IFR+MS 72 6651.13 9.36 207.64 94.55 6609.95 -118.45 -410.34 -218.72 464.99 208.06 0.59 BP _MWD+IFR+MS 73 6744.54 9.30 196.35 93.41 6702.13 -120.74 -424.31 -224.37 479.98 207.87 1.96 BP _MWD+IFR+MS 74 6838.16 9.96 170.22 93.62 6794.48 -117.97 -439.55 -225.12 493.85 207.12 4.68 BP _MWD+IFR+MS 75 6931.76 11.11 152.62 93.60 6886.52 -108.91 -455.54 -219.60 505.71 205.74 3.63 BP MWD+IFR+MS 76 7024.23 11.68 138.50 92.47.. 6977.18 -95.45 -470.47 -209.30 514.92 203.98 3.07 BP _MWD+IFR+MS 77 7117.64 13.64 119.76 93.41 7068.36 -77.15 -483.02 -193.46 520.33 201.83 4.84 BP _MWD+IFR+MS 78 7210.61 16.06 110.91 92.97 7158.23 -53.89 -493.06 -171.93 522.17 199.22 3.56 BP_MWD+IFR+MS 79 7303.59 19.51 106.72 92.98 7246.75 -25.63 -502.12 -145.03 522.64 196.11 3.96 BP _MWD+IFR+MS 80 7397.40 23.59 106.19 93.81 7333.99 8.77 -511.86 -111.99 523.97 192.34 4.35 BP MWD+IFR+MS 81 7491.76 27.19 106.68 94.36 7419.22 49.16 -523.32 -73.19 528.41 187.96 3.82 BP _MWD+IFR+MS . 82 7584.04 30.04 107.84 92.28 7500.22 93.24 -536.45 -31.00 537.34 183.31 3.15 BP _MWD+IFR+MS 83 7678.55 33.74 106.31 94.51 7580.45 143.05 -551.07 16.72 551.33 178.26 4.01 BP _MWD+IFR+MS 84 7772.02 36.48 103.85 93.47 7656.91 196.77 -565.02 68.63 569.17 173.07 3.30 BP _MWD+IFR+MS 85 7865.72 40.48 101.04 93.70 7730.26 255.04 -577.51 125.55 591.00 167.73 4.66 BP MWD+IFR+MS 86 7957.61 43.89 101.16 91.89 7798.33 316.69 -589.39 186.09 618.08 162.48 3.71 BP _MWD+IFR+MS 87 8051.49 46.85 100.65 93.88 7864.28 383.44 -602.03 251.69 652.52 157.31 3.18 BP _MWD+IFR+MS 88 8145.00 46.24 100.43 93.51 7928.60 451.24 -614.44 318.43 692.05 152.61 0.67 BP _MWD+IFR+MS 89 8238.36 45.49 99.53 93.36 7993.61 518.13 -626.06 384.42 734.66 146.45 1.06 BP _MWD+IFR+MS 90 8330.95 44.83 98.34 92.59 8058.90 583.59 -636.26 449.27 778.89 144.77 1.16 BP _MWD+IFR+MS [(c)2 005 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report 18- Oct-2005 15:49:54 Page 5 of 9 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 8425.65 45.84 98.74 94.70 ..8125.47 650.71 -646.26 - 515.87 ------- 826.91 -------- 141.40 ----- l.ll - BP ---- ------ MWD+IFR+MS 92 8518.07 45.70 98.58 92.42 8189.93 716.72 -656.23 581.34 876.70 138.46 0.20 BP _ MWD+IFR+MS 93 8611.81 44.96 97.95 93.74 8255.83 783.12 -665.82 647.31 928.62 135.81 0.92 BP _ MWD+IFR+MS 94 8705.83 45.59 99.75 94.02 8322.00 849.72 -676.10 713.31 982.81 133.47 1.52 BP _ MWD+IFR+MS 95 8798.96 46.70 99.62 93.13 8386.52 916.74 -687.40 779.51 1039.30 131.41 1.20 BP _ MWD+IFR+MS 96 8891.57 49.54 101.37 92.61 8448.34 985.60 -699.98 847.29 1099.03 129.56 3.37 BP MWD+IFR+MS • 97 8984.90 54.06 101.81 93.33 8506.04 1058.89 -714.72 919.12 1164.30 127.87 4.86 BP _ MWD+IFR+MS 98 9077.94 58.50 103.53 93.04 8557.68 1136.25 -731.72 994.59 1234.76 126.34 5.01 BP _ MWD+IFR+MS 99 9141.12 61.74 102.14 63.18 8589.15 1191.02 -743.87 1048.00 1285.16 125.37 5.47 BP _ MWD+IFR+MS 100 9210.57 66.90 100.89 69.45 8619.24 1253.55 -756.35 1109.31 1342.62 124.29 7.60 BP _ INC+BLIND 101 9229.83 71.66 100.55 19.26 8626.05 1271.54 -759.70 1127.00 1359.15 123.98 24.77 BP INC+BLIND 102 9239.97 74.27 100.36 10.14 8629.02 1281.23 -761.46 1136.54 1368.04 123.82 25.80 BP _ INC+BLIND 103 9273.09 81.65 99.77 33.12 8635.93 1313.54 -767.11 1168.41 1397.73 123.29 22.35 BP _ MWD+IFR+MS 104 9308.62 85.02 97.62 35.53 8690.05 1348.71 -772.44 1203.29 1429.88 122.70 11.23 BP _ MWD+IFR+MS 105 9339.20 84.26 98.83 30.58 8642.91 1379.04 -776.80 1233.42 1457.65 122.20 4.66 BP _ MWD+IFR+MS 106 9370.87 83.20 101.30 31.67 8646.37 1410.47 -782.30 1264.41 1486.85 121.75 8.44 BP MWD+IFR+MS 107 9402.70 84.58 104.13 31.83 8649.76 1442.11 -789.26 1295.28 1516.80 121.36 9.85 BP _ MWD+IFR+MS 108 9432.79 87.60 103.60 30.09 8651.81 1472.12 -796.46 1324.42 1545.46 121.02 10.19 BP _ MWD+IFR+MS 109 9465.44 90.07 104.37 32.65 8652.47 1504.76 -804.35 1356.10 1576.69 120.67 7.92 BP _ MWD+IFR+MS 110 9495.29 92.85 104.63 29.85 8651.71 1534.59 -811.82 1384.98 1605.37 120.38 9.35 BP _ _MWD+IFR+MS 111 9527.02 93.60 103.93 31.73 8649.93 1566.27 -819.63 1415.68 1635.83 120.07 3.23 BP MWD+IFR+MS i 112 9558.41 93.77 102.54 31.39 8647.91 1597.59 -826.80 1446.18 1665.84 119.76 4.45 BP _ MWD+IFR+MS 113 9588.96 93.70 99.65 30.55 8645.92 1628.05 -832.67 1476`.09 1694.75 119.43 9.44 BP _ MWD+IFR+MS 114 9620.87 92.91 98.16 31.91 8644.08 1659.81 -837.60 1507.56 1724.62 119.06 5.28 BP _ MWD+IFR+MS 115 9651.38 92.92 97.34 30.51 8642.53 1690.14 -841.71 1537.75 1753.04 118.69 2.68 BP _ MWD+IFR+MS 116 9682.58 90.89 97.07 31.20 8641.49 1721.15 -845.62 1568.69 1782.09 118.33 6.56 BP MWD+IFR+MS 117 9713.23 89.76 97.51 30.65 8641.32 1751.63 -849.51 1599.09 1810.73 117.98 3.96 BP _ MWD+IFR+MS 118 9744.89 90.00 98.95 31.66 8641.38 1783.16 -854.04 1630.42 1840.56 117.65 4.61 BP _ MWD+IFR+MS 119 9775.84 89.52 98.63 30.95 8641.51 1814.02 -858.77 1661.01 1869.87 117.34 1.86 BP _ MWD+IFR+MS 120 9806.28 89.45 98.75 30.44 8641.79 1844.36 -863.37 1691.10 1898.74 117.05 0.46 BP _ MWD+IFR+MS [(c)2005 IDEAL ID10 2C O1] _ SCHLUMBERGER Survey Report 18-Oct-2005 15:49:54 Page 6 of 9 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 9837.91 89.25 98.13 31.63 8642.14 1875.87 -868.01 1722.38 1928.74 116.75 2.06 BP MWD+IFR+MS 122 9869.33 88.59 97.80 31.42 8642.74 1907.15 -872.36 1753.49 1958.51 116.45 2.35 BP _ MWD+IFR+MS 123 9900.22 88.22 97.71 30.89 8643.59 1937.88 -876.53 1784.09 1987.78 116.17 1.23 BP _ MWD+IFR+MS 124 9931.70 88.29 96.66 31.48 8644.55 1969.17 -880.46 1815.31 2017.56 115.87 3.34 BP _ MWD+IFR+MS 125 9961.17 88.11 96.08 29.47 8645.48 1998.41 -883.73 1844.58 2045.35 115.60 2.06 BP _ MWD+IFR+MS 126 9992.58 87.98 95.96 31.41 8646.55 2029.55 -887.02 1875.80 2074.95 115.31 0.56 BP _MWD+IFR+MS 127 10022.35 86.50 96.22 29.77 8647.98 2059.05 -890.18 1905.36 2103.05 115.04 5.05 BP MWD+IFR+MS 128 10053.54 85.68 96.12 31.19 8650.11 2089.92 -893.52 1936.30 2132.52 114.77 2.65 BP _ MWD+IFR+MS 129 10084.38 85.85 96.63 30.84 8652.39 2120.45 -896.94 1966.87 2161.73 114.51 1.74 BP _ MWD+IFR+MS 130 10115.60 88.01 96.44 31.22 8654.06 2151.41 -900.49 1997.84 2191.40 114.26 6.95 BP _ MWD+IFR+MS 131 10147.03 89.11 96.53 31.43 8654.85 2182.61 -904.03 2029.06 2221.34 114.02 3.51 BP MWD+IFR+MS 132 10179.13 89.04 96.41 32.10 8655.37 2214.48 -907.65 2060.95 2251.96 113.77 0.43 BP _ MWD+IFR+MS 133 10209.38 88.94 96.16 30.25 8655.90 2244.49 -910.96 2091.01 2280.83 113.54 0.89 BP _ MWD+IFR+MS 134 10240.10 88.87 94.62 30.72 8656.49 2274.92 -913.85 2121.59 2310.03 113.30 5.02 BP _ MWD+IFR+MS 135 10271.62 88.90 95.51 31.52 8657.10 2306.10 -916.63 2152.98 2339.99 113.06 2.82 BP _ MWD+IFR+MS 136 10302.23 89.38 94.89 30.61 8657.56 2336.41 -919.40 2183.46 2369.14 112.83 2.56 BP MWD+IFR+MS 137 10333.71 89.38 93.63 31.48 8657.90 2367.49 -921.74 2214.85 2398.99 112.60 4.00 BP _ MWD+IFR+MS 138 10365.23 88.87 93.71 31.52 8658.38 2398.56 -923.76 2246.30 2428.83 112.35 1.64 BP _ MWD+IFR+MS 139 10396.46 89.62 94.01 31.23 8658.79 2429.37 -925.86 2277.46 2458.46 112.12 2.59 BP _ _MWD+IFR+MS 140 10427.45 92.02 96.10 30.99 8658.35 2460.03 -928.59 2308.32 2488.10 111.91 10.27 BP MWD+IFR+MS 141 10459.59 92.84 95.11 32.14 8656.99 2491.85 -931.73 2340.28 2518.93 111.71 4.00 BP _MWD+IFR+MS 142 10490.18 92.81 94.42 30.59 • 8655.48 2522.07 -934.27 2370.72 2548.17 111.51 2.26 BP _MWD+IFR+MS 143 10521.24 91.37 92.64 31.06 8654.35 2552.65 -936.18 2401.70 2577.71 111.30 7.37 BP _MWD+IFR+MS 144 10552.32 89.79 91.54 31.08 8654.03 2583.14 -937.31 2432.76 2607.08 111.07 6.19 BP MWD+IFR+MS 145 10584.15 89.69 91.89 31.83 8654.18 2614.32 -938.26 2464.57 2637.13 110.84 1.14 BP _ MWD+IFR+MS 146 10615.09 89.14 92.39 30.94 8654.49 2644.67 -939.42 2495.49 2666.45 110.63 2.40 BP _MWD+IFR+MS 147 10645.62 88.63 92.30 30.53 8655.09 2674.64 -940.67 2525.99 2695.45 110.43 1.70 BP MWD+IFR+MS 148 10677.17 87.36 93.31 31.55. 8656.19 2705.64 -942.21 2557.48 2725.52 110.22 5.14 BP _ MWD+IFR+MS 149 10708.21 87.09 93.15 31.04 8657.69 2736.17 -943.96 2588.44 2755.19 110.04 1.01 BP _ MWD+IFR+MS 150 10740.30 86.29 93.00 32.09 8659.55 2767.69 -945.67. 2620.43 2785.84 109.84 2.54 BP _ MWD+IFR+MS [(c)2 005 IDEAL ID10 2C O1J _ • • SCHLUMBERGER Survey Report 18-Oct-2005 15:49:54 Page 7 of 9 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 - (f t) (deg) (deg) (ft) (ft) (f t) (ft) (ft) (ft) (deg) 100f) type (deg) 151 10771.80 85.54 92.13 31.50 8661.79 2798.56 -947.08 2651.81 2815.86 109.65 3.64 BP MWD+IFR+MS 152 10801.70 87.29 93.12 29.90 8663.66 2827.89 -948.45 2681.62 2844.41 109.48 6.72 BP _ MWD+IFR+MS 153 10833.25 88.29 93.89 31.55 8664.88 2858.95 -950.38 2713.09 2874.73 109.31 4.00 BP _ MWD+IFR+MS 154 10864.28 88.39 92.37 31.03 8665.78 2889.48 -952.07 2744.06 2904.53 109.13 4.91 BP _ MWD+IFR+MS 155 10895.30 88.53 92.39 31.02 8666.61 2919.93 -953.36 2775.04 2934.24 108.96 0.46 BP _ MWD+IFR+MS 156 10925.99 88.63 92.48 30.69 8667.37 2950.06 -954.66 2805.69 2963.66 108.79 0.44 BP MWD+IFR+MS . 157 10957.14 88.56 93.93 31.15 8668.13 2980.72 -956.40 2836.78 2993.67 108.63 4.66 BP _ MWD+IFR+MS 158 10987.87 88.63 92.47 30.73 8668.89 3010.96 -958.12 2867.46 3023.29 108.48 4.75 BP _ MWD+IFR+MS 159 11018.23 88.87 92.39 30.36 8669.55 3040.77 -959.40 2897.78 3052.47 108.32 0.83 BP _ MWD+IFR+MS 160 11050.13 89.21 92.54 31.90 8670.08 3072.10 -960.77 2929.65 3083.17 108.16 1.16 BP _ MWD+IFR+MS 161 11080.88 89.28 93.40 30.75 8670.49 3102.35 -962.37 2960.35 3112.85 108.01 2.81 BP MWD+IFR+MS 162 11112.25 89.38 92.84 31.37 8670.86 3133.22 -964.07 2991.68 3143.18 107.86 1.81 BP _ MWD+IFR+MS 163 11142.97 89.35 92.74 30.72 8671.20 3163.42 -965.57 3022.36 3172.85 107.72 0.34 BP _ MWD+IFR+MS 164 11174.73 89.28 93.80 31.76 8671.58 3194.70 -967.38 3054.06 3203.61 107.58 3.34 BP _ MWD+IFR+MS 165 11206.65 89.49 94.41 31.92 8671.92 3226.20 -969.67 3085.90 3234.66 107.44 2.02 BP _ MWD+IFR+MS 166 11238.13 88.94 93.47 31.48 8672.35 3257.26 -971.83 3117.30 3265.27 107.32 3.46 BP _MWD+IFR+MS 167 11268.25 88.18 94.69 30.12 8673.11 3286.98 -973.97 3147.33 3294.59 107.20 4.77 BP MWD+IFR+MS 168 11299.00 68.35 95.20 30.75 8674.04 3317.39 -976.62 3177.96 3324.63 107.08 1.75 BP _ MWD+IFR+MS 169 11331.25 88.35 95.34 32.25 8674.97 3349.31 -979.58 3210.06 3356.19 106.97 0.43 BP _ _MWD+IFR+MS 170 11361.37 88.90 96.89 30.12 8675.69 3379.19 -982.79 3240.00 3385.77 106.87 5.46 BP MWD+IFR+MS 171 11393.08 92.09 95.81 31.71 8675.42 3410.66 -986.30 3271.50 3416.95 106.78 10.62 BP MWD+IFR+MS 172 11424.12 93.54 95.65 31.04 8673.89 3441.39 -989.39 3302.35 3447.38 106.68 4.70 BP _ MWD+IFR+MS 173 11455.88 91.89 95.40 31.76 8672.39 3472.82 -992.45 3333.93 3478.51 106.58 5.25 BP _ MWD+IFR+MS 174 11485.63 91.54 94.48 29.75 8671.50 3502.24 -995.01 3363.55 3507.64 106.48 3.31 BP _ MWD+IFR+MS 175 11517.56 91.47 94.47 31.93 .8670.66 3533.78 -997.50 3395.37 3538.87 106.37 0.22 BP _ MWD+IFR+MS 176 11549.08 91.89 95.79 31.52 8669.74 3564.97 -1000.31 3426.75 3569.77 106.27 4.39 BP MWD+IFR+MS 177 11579.77 92.06 94.62 30.69 8668.68 3595.33 -1003.10 3457.30 3599.88 106.18 3.85 BP _ MWD+IFR+MS 178 11610.60 92.37 94.51 30.83 8667.49 3625.78 -1005.55 3488.01 3630.06 106.08 1.07 BP _ MWD+IFR+MS 179 11641.53 92.95 94.86 30.93 8666.05 3656.33 -1008.07 3518.80 3660.35 105.99 2.19 BP _ _MWD+IFR+MS 180 11672.15 93.32 95.50 30.62 8664.38 3686.60 -1010.83 3549.25 3690.39 105.90 2.41 BP MWD+IFR+MS [(c)2005 IDEAL ID10 2C O1] _ r SCHLUMBERGER Survey Report 18-Oct-2005 15:49:54 Page 8 of 9 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +EJW- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 181 11703.34 94.29 95.07 31.19 8662.31 3717.41 -1013.70 3580.24 3720.98 105.81 3.40 BP _MWD+IFR+MS 182 11733.68 95.05 96.71 30.34 8659.84 3747.40 -1016.80 3610.32 3750.77 105.73 5.94 BP _MWD+IFR+MS 183 11766.85 93.88 95.87 33.17 8657.25 3780.22 -1020.42 3643.19 3783.39 105.65 4.34 BP _MWD+IFR+MS 184 11796.37 91.23 96.15 29.52 8655.94 3809.47 -1023.51 3672.51 3812.47 105.57 9.03 BP _MWD+IFR+MS 185 11828.01 87.84 95.89 31.64 8656.20 3840.85 -1026.83 3703.97 3843.67 105.49 10.75 BP MWD+IFR+MS 186 11859.45 86.95 96.92 31.44 8657.63 3872.03 -1030.33 3735.18 3874.68 105.42 4.33 BP _MWD+IFR+MS 187 11891.25 86.02 96.37 31.80 8659.57 3903.56 -1034.01 3766.71 3906.06 105.35 3.40 BP _MWD+IFR+MS 188 11922.12 85.92 97.27 30.87 8661.74 3934.15 -1037.66 3797.29 3936.51 105.28 2.93 BP _MWD+IFR+M5 189 11953.05 88.05 99.35 30..93 8663.37 3964.92 -1042.13 3827.84 3967.17 105.23 9.62 BP _MWD+IFR+MS 190 11984.87 88.66 99.47 31.82 8664.28 3996.65 -1047.33 3859.22 3998.81 105.18 1.95 BP MWD+IFR+MS 191 12014.61 88.97 97.65 29.74 8664.90 4026.28 -1051.75 3888.63 4028.35 105.13 6.21 BP _MWD+IFR+MS 192 12045.83 91.06 97.50 31.22 8664.89 4057.35 -1055.87 3919.57 4059.30 105.08 6.71 BP _MWD+IFR+MS 193 12076.39 93.05 97.75 30.56 8663.80 4087.73 -1059.92 3949.84 4089.58 105.02 6.56 BP _MWD+IFR+MS 194 12107.82 93.32 97.06 31.43 8662.05 4118.95 -1063.96 3980.96 4120.69 104.96 2.35 BP _MWD+IFR+MS 195 12138.98 91.30 96.89 31.16 8660.79 4149.89 -1067.74 4011.86 4151.52 104.90 6.51 BP MWD+IFR+MS 196 12170.24 90.21 96.69 31.26 8660.38 4180.95 -1071.44 4042.90 4182.47 104.84 3.55 BP _MWD+IFR+MS 197 12201.48 90.24 97.50 31.24 8660.26 4212.01 -1075.30 4073.90 4213.42 104.79 2.59 BP _MWD+IFR+MS 198 12233.04 89.86 96.46 31.56 8660.23 4243.37 -1079.13 4105.23 4244.69 104.73 3.51 BP _MWD+IFR+MS 199 12264.15 88.53 93.99 31.11 8660.67 4274.17 -1081.97 4136.20 4275.37 104.66 9.02 BP _MWD+IFR+MS 200 12294.91 87.81 95.58 30.76 8661.65 4304.57 -1084.53 4166.84 4305.66 104.59 5.67 BP MWD+IFR+MS 201 12326.09 87.84 95.27 31.18 8662.83 4335.44 -1087.48 4197.85 4336.42 104.52 1.00 BP _MWD+IFR+MS 202 12356.98 87.77 95.53 30.89 8664.02 4366.01 -1090.38 4228.58 4366.90 104.46 0.87 BP _MWD+IFR+MS 203 12388.92 87.60 94.53 31.94 8665.31 4397.59 -1093.18 4260.37 4398.39 104.39 3.17 BP _MWD+IFR+MS 204 12420.74 86.43 95.55 31.82 8666.97 4429.04 -1095.97 4292.03 4429.75 104.32 4.88 BP _MWD+IFR+MS 205 12451.08 86.64 95.37 30.34 8668.80 4459.04 -1098.85 4322.17 4459.67 104.26 0.91 BP MWD+IFR+MS 206 12482.27 86.50 95.33 31.19 8670.67 4489.87 -1101.76 4353.17 4490.43 104.20 0.47 BP _MWD+IFR+MS 207 12512.71 86.19 95.22 30.44 8672.61 4519.96 -1104.55 4383.42 4520.44 104.14 1.08 BP _MWD+IFR+MS 208 12544.33 86.33 94.02 31.62 8674.67 4551.15 -1107.09 4414.87 4551.57 104.08 3.81 BP _MWD+IFR+MS 209 12575.32 86.23 94.57 30.99 8676.68 4581.69 -1109.41 4445.71 4582.04 104.01 1.80 BP _MWD+IFR+MS 210 12605.88 86.06 94.81 30.56 8678.73 4611.84 -1111.90 4476.10 4612.13 103.95 0.96 BP _MWD+IFR+MS [(c)2 005 IDEAL ID10 2C O1] ~ ~ ~ s SCHLUMBERGER Survey Report Seq Measured Incl Azimuth # depth angle angle - (ft) (deg) (deg) 211 12637.27 85.88 94.71 212 12668.24 85.85 96.25 213 12698.69 85.78 95.63 214 12730.40 85.09 96.13 215 12814.00 85.09 96.13 Course length (ft) 31.39 30.97 30.45 31.71 83.60 18-Oct-2005 15:49:54 TVD Vertical Displ Displ depth section +N/S- +EjW- (ft) (ft) (ft) (f t) 8680.94 4642.80 -1114.50 4507.30 8683.17 4673.40 -1117.45 4538.05 8685.40 4703.52 -1120.59 4568.26 8687.92 4734.$7 -1123.83 4599.70 8695.08 4817.51 -1132.72 4682.52 Page 9 of 9 Total At displ Azim (ft) (deg) 4643.05 103.89 4673.61 103.83 4703.69 103.78 4735.00 103.73 4817.57 103.60 DLS Srvy Tool (deg/ tool Corr 100f) type (deg) 0.66 BP_MWD+IFR+MS 4.96 BP_MWD+IFR+MS 2.04 BP_MWD+IFR+MS 2.68 BP_MWD+IFR+MS 0.00 PROJECTED TO TD • [(0)2005 IDEAL ID10 2C O1] • • Schlumberger Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatched To: AOGCC -Librarian Well No L-50PB1 Date Dispatched: 25-Oct-05 Installation/Rig Nabors 9ES Dispatched By: Mauricio Perdomo LWD Log Delivery V1.1,10-02-03 Data No Of Prints No of Flop ies Surveys 2 1 Please sign and return to: James H. Johnson Received By: BP Exploration (Alaska) Inc. ~ n~ l Petrotechnical Data Center (LR2-1- 3 ~ ~ ~"~ r )~ 900 E. Benson Blvd. Anchorage, Alaska 99508 Fax: 907-564-4005 e-mail address:'ohnsojh~bp.com oZ. p 5 -~~ ~, r ~~ • • Schlumberger Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatched To Well No L-50 Installation/Rig Nabors 9ES A06CC -Librarian Date Dispatched: 27-Sep-05 Dispatched By: Mauricio Perdomo Data No Of Prints No of Floppies Surveys 2 1 Please sign and return to: ,lames H. Johnson Received By: BP Exploration (Alaska- Inc. Petrotechnical Data Center(LR2-1) t ~ ~-~~ ~ ~~ 900 E. Benson Blvd. Anchorage, Alaska 99508 Fax: 907-564-4005 e-mail address: johnso'h@bp.com LWD Log Delivery V1.1,10-02-03 ~d5~-13~ ~~~ ' ~~ t +7I" i ~ Gam' ! ,~'i~ ~ ~ a ~~,i % ~ `"~~ ~ ~ ~ "~" "-' q ~`, ~; ~ FRANK H. MURKOWSK(, GOVERNOR r3 ~~~~ ~~~~+r ~~a~ ~ ~~+ Y ~ist>47~ OIL a-isi/ GAS ~ 333 W. 7~" AVENUE, SUITE 100 COI~TSERQATIOI~T COl-II-IISSIOrT ~ ANCHORAGE, ALASKA 99501-3539 y° PHONE (907) 279-1433 FAX (907) 27&7542 Robert Tirpack Senior Drilling Engineer BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: PBU L-50 Prudhoe Bay Permit No: 205-136 Surface Location: 2350' FSL, 3830' FEL, SEC. 34, T12N, Rl lE, UM Bottomhole Location: 1183' FSL, 4181' FEL, SEC. 35, T12N, R1 lE, 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 approvals 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. Please provide at least twenty- four (24} hours notice for a representative of the Commission to witness any required test. Contact the Commission's petroleum field inspector at (907) 659- 3607 (pager}. Sincerely, ~~ ~ Johri K. Norman Chairman DATED this~~day of September, 2005 cc: Department of Fish 8s Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. C ~~ ~~~2-~ Zt~Q~ STATE OF ALASKA ~~ ~ ALASKA~L AND GAS CONSERVATION CO ISSION ....~ W PERMIT TO DRILL ~°, 20 AAC 25.005 1 a. Type of work ®Drill ^Redrill ^ Re-Entry 1 b. Current Well Class ^ Exploratory ®Development Oil ' ^ Multiple Zorte ^ Stratigraphic Test ^ Service ^Development Gas ^ Single Zone 2. Operator Name: BP Exploration (Alaska) Inc. 5. Bond: ®Blanket ~,' Single Well Bond No. 6194193 ` 11. Well Name and Number: PBU L-50 ~ 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: , MD 13064' ' TVp 8751' 12. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay 4a. Location of Well (Governmental Section): 3 OaFSL, 3830' FEL, SEC. 34 T12N UM ~ R11E (Planned) 7. Property Designation: r~ r. c~ts~;2~j~ADL 028238 - ~ +2'~ Pool , , , Top of Productive Horizon: 1607' FSL, 2706' FEL, SEC. 34, T12N, R11 E, UM 8. Land Use Permit: 13. Approximate Spud Date: September 20, 2005 Total Depth: 1183' FSL, 4181' FEL, SEC. 35, T12N, R11 E, UM 9. Acres in Property: 2560 14. Distance to Nearest Property: 6700' 4b. Location of Well (State Base Plane Coordinates): Surface: x- 583087 ~ Y- 5978070' Zone- ASP4 10. KB Elevation (Height above GL): 76,3' feet 15. Distance to Nearest Well Within Pool No Wells in EWE/NWE Sag,River Pool 16. Deviated Wells: Kickoff Depth: 4100' feet Maximum Hole Angle: 90 ' de rees 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Downhole: 4135- Surface: 3272 .- asing rogiam: .Size.. Specifications Setting Qepth To Bottom uantity of ement c.f. or sacks. Hole Casin Wei ht Grade Cou lin Len th MD TVD MD TVD includin sta a data 42" 20" 91.5# H-40 WLD 110' Surface Surface 110' 110' 60 sx Arctic Set A rox. 12-1/4" 9-5/8" 40# L-80 BTC 2776' Surface Surface 2776' ' 2776' 70 sx AS Lite, .Qff sx Class 'G' 8-3/4" 7" 26# L-80 BTC-M 9226' Surface Surface 9226' - 8626' 504 sx Lite Crete i 1 ~, ~G 6-1/8" 4-1/2" 12.6# L-80 IBT -M 3988' 9076' 8555' 13064' 8751' Uncemented Slotted Liner 19. PRESENT WELL CONDITION SUMM ARY. (To be completed for Redrill AND Re-entry Operations) Total Depth MD (ft): Tota{ Depth TVD (ft): Plugs (measured): Effective Depth MD (ft): Effective Depth TVD (ft): Junk (measured): Casing Length Size Cement Volume MD TVD tr r C ndu for rf t 't Pr d ti n Perforation Depth MD (ft): Perforation Depth TVD (ft): 20. Attachments ®Filing Fee, $100 ^ BOP Sketch ® Property Plat ^ Diverter Sketch ®Drilling Program ^ Time vs Depth Plot ^ Shallow Hazard Analysis ^ 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 to the best of my knowledge. Contact Scott Kolstad, 564-5347 Printed Name Robert Tirpack Title Senior Drilling Engineer Prepared By NamelNumber: Si nature ~~" ,2' Phone 564-4166 Date ~~~ ,~" Sondra Stewman, 564-4750 Commission Us® Only Permit To Drill Number: <~ ~.~ ~ API Number: 50- ~~C ---~ L j ~7~~'" Permit A prov Date: See cover letter for other requirements Conditions of Approval; Samples Required ^ Yes ~'No Mud Log Required ^ Yes j~No Hydro en Sulfide Measures , ^ Yes [~No Directional Survey Required ~(es ^ No Other: ~ ~ ~'~ ~~(~ PE ~U ~ S('~G~ ~ ~t ~~.r ~-~ ~-fk-c Z s, a 3 '~ C ~~ ~ ~ ~ , c~. t ~' e:~ ~.~.. ~ ~ t~ pt~ fQ ~ f ~~ ~ ~ c,~ t~~c r~ r s a,~p j ~ rfPc~ APPROVED BY . /3 ~~ A roved B THE COMMISSION Date Form 10-401 Revised 0,6/2004 ~ '~ ' '° ? Submit In Duplicate • • Well Name: L-50 Drill and Complete Plan Summary T e of Well service / roducer / in'ector : Producer Surface Location: As-Staked X = 583,086.84' Y = 5,978,070.34' 2350' FSL, 3830' FEL ,Sec. 34, T12N, R11 E Target Locations: Top Sag River: X = 584,220' Y .5,977,340' Bottom Hole Location: X = 588,030' Y = 5,976,960' AFE Number: PBDxxx Ri Nabors 9ES ' Estimated Start Date: 9/20/05 O eratin da s to com lete: 27.4 MD: 13,064' TVD: 8,751' RT/GL: 28.5' RKB: 76.3' Well Desi n conventional, slimhole, etc.: Ultra Slimhole Horizontal Ob'ective: Sin le zone producer in the Sa River formation. Directional: Ver. Anadrill P3 KOP: 4100' Maximum Hole An le: 90.0 de at 11,808.83' MD Close Approach Wells: All wells pass major risk criteria. The nearest well is: L-114 - 16' ctr-ctr C«~ 750' None IFR-MS corrected suroe s will be used for surve validation. Logging Program: Surface Drilling: MWD / GR Open Hole: None Cased Hole: None Intermediate Hole Drilling: MWD/GR/PWD/RES f Open Hole: None Cased Hole: Production Hole Drilling: MWD/GR/RES/DEN/NEU Open Hole: None Cased Hole: L-50 Permit application Page 1 • Mud Program: 12 ~/a" Surface Hole 0-2776' Fresh Water Surface Hole Mud Density Viscosi seconds Yield Point Ib/1~_ API FL mis/30min PH Initial 8.5 - 9.2 '` 250-300 50 - 70 15 - 20 8.5 - 9.5 Base PF to to SV 9.0 - 9.5 250-300 30 - 45 < 10 8.5 - 9.5 SV toTD 9.5 max ' 250-300 20 - 40 < 10 8.5 - 9.5 8 3/a "Intermediate Hole (2776' - 9226'): LSND Interval Density Tau o YP PV pH API 10' Gel (ppg) Filtrate Upper 9.5 4-7 25-30 10-15 8.5-9.5 6-10 10 Interval Top of HRZ 1. 3-7 20-25 10-15 8.5-9.5 4-6 10 to TD - 6 1/8" Production Hole (9226' - TD'): MOBM Interval Density (ppg) Stability YP PV OiI:H2O Ratio API Filtrate MBT To TD 9.6 ~ 650 - 900 15 - 19 <20 80:20 <5 <6 Hydraulics: Surface Hole: 12-1/4" Interval Pump GPM Drill Pie AV (fpm) Pump PSI ECD ppg-emw Motor Jet ("/32) Nozzles TFA (in2) 0-1782' 550 4" 15.7# 90 1800 10.0 NIA 18,18,18,16 .942 1782'-2776' 650 4" 15.7# 110 2400 10.2 N/A 18,18,18,16 .942 Intermediate Hole: 8 3/a" Interval Pump GPM Drill Pipe AV (fpm) Pump PSI ECD ppg-emw Motor Jet ("/32) Nozzles TFA (in2) 2776' - 9226' 600 4" 15.7# 240 3400 13.0 N/A 3x14, 3x15 .969 Production Hole: 6-1/8" Interval Pump GPM Drill Pipe AV (fpm) Pump PSI ECD ppg-emw Motor Jet ("/32) Nozzles TFA (in2) 9226' - TD' 300 4" 15.7# 341 3400 12.5 N/A 6x11 .552 L-50 Permit application Page 2 Casing/Tubing Program: • Hole Size Csg/ Tb O.D, Wt/Ft Grade i Conn , ~ Length Top MDlTVD Btm MD/TVD bkb 42" Insulated 20" 91.5# H-40 WLD 80' GL 110'/110' 12'/a" 9 5/8" 40# L-80 BTC 2776' ' GL 2776 / 2776 8 s/a" 7" 26# L-80 BTC-m 9226'- GL 9226 / 8626 6 1 /8" 4 '/2 " 12.6# L-80 I BT-m 3988 9076 13064 / 8751 Tubin 3'/2" 9.3# L-80 TC-II 9076 GL 9076 / 8558 I me rit Testi n Test Point Depth Test Type EMW Surface Casing Shoe 20' - 50' from surface shoe LOT Expected >13.5 Intermediate Casing Shoe 20' - 50' from intermediate FIT 11.5 ppg shoe Cement Calculations: The following surface cement calculations are based upon a single stage job using a port collar as a contin enc if cement is not circulated to surface. Casing Size 9-5/8" Surface String Basis: Lead: Based on conductor set at 110', 1750' of annulus in the permafrost Cud 250% excess and 419' of o hole from top of tail slurry to base permafrost C~ 30% excess. Lead TOC: To s ace Tail: Based on D above the casing shoe + 30% excess + 80' shoe track volume. Tail TOC: At 2276' MD Total Cement Volume: Lead 372 bbl / 2089 ft / ~ . ks of Schlumberger Arctic SET Lite 10.7 and . - cf/sk. Tail -86 bbl /-292 ft / ' ks of Schlumberger Neat "G" at 15.8 oaa and.5.AS9'c k. ~ ~ 3 WG /t---- Intermediate Casing: The base case is to cement the intermediate casing with a single stage cement job with the volumes outlined below. However, a two stage cement job may be performed. If the two stage method is used, the tail TOC will be 1000' MD above the 7" casing shoe, and the second stage cement top will be 500' MD above the to of the Ma sands. Schlumber er Lite Crete cement will be used in either case. Casing Size 7" Intermediate String Basis: Stage 1: Based on TOC 500'MD above top of Ma Sands + 30% excess + 80' shoe Cement Placement: Tail from shoe to 3,436' MD Total Cement Volume: Tail 205 bbl / 1151 ft / 504 sks of Schlumberger Lite Crete 12 ppq and 2.28 cf/sk. Casin Size 4'/z" Production Liner -Slotted L-50 Permit application Page 3 • Formation Markers: Est. Formation Tops Uncertaint Commercial Hydrocarbon Bearin Est. Pore Press. Est. Pore Press. G1 -255 +/-30' 115 8.7 SV6 -880 +l-30' 396 8.7 ault 1 +/-100' M.D.- see fault section -1200 below 40 .7 SV5 -1470 +/-30' 662 8.7 SV4 -1600 +/-30' Poss. Gas H dr. 720 8.7 Base Permafrost -1720 +/-30' 774 8.7 SV3 -1950 +/-30' Poss. Gas H dr. 878 8.7 SV2 -2120 +/-30' Poss. Gas H dr. 954 8.7 SV1 -2500 +/-30' Poss. Gas H dr. 1125 8.7 UG4 -2635 +/-30' Thin Coal 1186 8.7 UG4A -2662 +/-30' Yes -Heavy oil 1198 8.7 UG3 -3062 +/-30' Yes -Heavy Oil 1378 8.7 UG1 -3550 +/-30' Yes -Heavy Oil 1598 8.7 Ma -3860 +/-30' Yes -Heavy Oil 1737 8.7 Mb1 -3900 +/-30' No 1755 8.7 Mb2 -3960 +/-30' No 1782 8.7 Mc -4040 +/-30' No 1818 8.7 Na -4100 +/-30' No 1845 8.7 Nb -4120 +/-30' No 1854 8.7 Nc -4170 +/-30' Yes 1877 8.7 OA -4260 +/-30' Yes 1896 8.6 OBa -4320 +/-30' Yes 1922 8.6 OBb -4365 +/-30' Yes 1942 8.6 OBC -4420 +/-30' Yes 1967 8.6 OBd -4470 +/-30' Yes 1989 8.6 Fault 2 -4520 +/-100' 2011 8.6 OBe -4530 +/-30' Yes 2016 8.6 OBf -4540 +/-30' Yes 2020 8.6 OBf_Base -4600 +/-30' No 2047 8.6 CM-2 -4860 +/-30' n/a CM-1 -5580 +/-30' n/a THRZ -6230 +/-30' n/a K-1 -6420 +/-30' No TKD -6550 +/-30' No TKC4 -6565 +/-30' Yes 3200 9.4 LCU -6720 +/-30' n/a ~.~ 11. ~ ~,. L-50 Permit application Page 4 • • TMLV -6950 +/-30' n/a TKNG -7550 +/-30' n/a Fault 3 -7580 +/-100' n/a TJ F -7680 +/-30' n/a TJE -7811 +/-30' TJD -8080 +/-30' TJC -8330 +/-30' Fault 4 -8350 +/-100' n/a TJB -8380 +/-30' n/a TJA -8440 +/-30' TSGR -8550 +/-20' Yes 4135 9.3 Fault 5 -8615 +/-50' n/a TD -8675 +/-20' Well Control: Surface hole will be drilled with diverter. The intermediate and production hole well control equipment consisting of 5000 psi working pressure pipe rams(2), blind/shear rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. BOP equipment will be tested to 3500 psi. The BOP test frequency will be conducted on ~ a 14 day frequency. Except for significant operational issues that may effect well integrity or pose safety concerns, an extension to the 14 day BOP test period should not be requested. Diverter, ROPE and drilling fluid system schematics on file with the AOGCC. Production Interval- • Maximum anticipated BHP: • Maximum surface pressure: • Planned BOP test pressure: • Planned completion fluid: Disposal: " 4135 psi ~ 8626' TVD -Sag. River Sand 3272 psi C~ surface ~- (based on BHP and a full column of gas from TD C«3 0.10 psi/ft) 3500 psi 10.5 ppg filtered brine (6426') / 6.8 ppg diesel (2,200') • No annular disposal in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS-04. • Fluid Handling: Haul all drilling and completion fluids and other Class li wastes to DS- 04 for disposal. Haul all Class I wastes to Pad 3 for disposal. L-50 Permit application Page 5 • ~ DRILL AND COMPLETE PROCEDURE SUMMARY Pre-Rig Work: The 20" insulated conductor is installed. 1. Weld an FMC landing ring for the FMC Ultra slimhole wellhead on the conductor. 2. If necessary, level the pad and prepare location for rig move. Rig Operations: 1. MIRU Nabors 9ES. 2. Nipple up and function test diverter. PU 4" DP as required and stand back in derrick. 3. MU 12 ~/a" drilling assembly with MWD/GR/Dir and directionally drill surface hole to approximately 100' TVD below the SV1 Sand top. 4. Run and cement the 9-5/8", 40# surface casing back to surface. 5. ND diverter and NU casing /tubing head. NU BOPE and test, 6. MU 8-3/4" drilling assembly with MWD/GR/DIR/RES/PWD and RIH to float collar. Test the 9-5/8" casing to 3500 psi for 30 minutes. 7. Drill out shoe joints and displace well to LSND drilling fluid. Drill new formation to 20' below 9-5/8" shoe and perform Leak Off Test. 8. Drill to +/-100' above the HRZ, ensure mud is in condition and up to required weight and perform short trips as needed. Ensure Pre-Reservoir meeting is held highlighting kick tolerance and detection prior to entering HRZ. 9. Drill ahead to TD just below the top of the Sag River. 10. Condition hole for running 7" 26# intermediate casing. j 11. Run and cement the 7" intermediate casing. Displace the cement with drilling mud. 12. MU 6-1/8" drilling assembly with MWD/GR/DIR/RES/DEN/NEU and RIH to float collar. Test the 7" casing to 3500 psi for 30 minutes. " 13. Drill out shoe joints and displace well to drilling fluid. Drill new formation to 20' below 7" shoe and perform Formation Integrity Test. ~ 14. Drill horizontally towardsTD with the assistance of the on-site Geologist. 15. Run 4'h", L-80, slotted liner. Provide 150' overlap into the 7" casing. - -- . 16. Freeze protect the 7" x 9-5/8" annulus as required. Record formation breakdown pressure on the Morning Report. 17. Run the 3-1/2", 9.3#, L-80, IBT-M completion assembly. Set packer and test the tubing to 3500 psi and annulus to 3500 psi for 30 minutes. Shear DCK shear valve and install TWC. Test below to 1000 psi. 18. Nipple down the BOPE. Nipple up and test the tree to 5000 psi. Remove TWC. 19. RU hot oil truck and freeze protect well by pumping 2200' of diesel. Allow to equalize. 20. Rig down and move off. L-50 Permit application Page 6 • • L-50 Drilling Program Job 1: MIRU Hazards and Contingencies - L-pad is not designated as an H2S site. None of the current producers on L-pad have indicatedthe presence of H2S: As a precaution however Standard Operating Procedures for HZS precautions should be followed at all times. - The closest surface location is L-114 at 15' to the West. To the east the nearest well is L- 121 at 30 feet. - Check the landing ring height on L-50. The BOP nipple up may need review for space out. Reference RPs • "Drilling/ Work over Close Proximity Surface and Subsurface Wells Procedure" Job 2: Drilling Surface Hole Hazards and Contingencies - L-114 is 16' away at 750'. "` - There is one shallow fault at 1,280' MD (-1200'TVDss) in the SV6 area to be crossed in the surface hole. This fault has been penetrated by most wells drilled on L pad without major difficulty. The estimated throw is 110'. - Camera Based Gyro survey may be required per the directional plan to 1000' MD or until the magnetic interference at the surface has dissipated. - Gas hydrates have been observed in wells drilled on L-pad.~These were encountered near the base of permafrost to TD in the SV1 sand. Hydrates wil{ be treated at surface with appropriate mud products and adjustment of drilling parameters. Refer to MI mud recommendations. Reference RPs • "Prudhoe Bay Directional Guidelines" • "Well Control Operations Station Bill" Job 3: Install Surface Casing Hazards and Contingencies - It is critical that cement is circulated to surface for well integrity. 250% excess cement through the permafrost zone (and 30% excess below the permafrost) is planned. A 9-5/8" port collar will be positioned at ±1000'MD to allow remedial cementing if drilling activity indicates severe washout. - "Annular Pumping Away" criteria for future permitting approval for annular injection. 1. Pipe reciprocation during cement displacement 2. Cement -Top of tail >500' TVD above shoe using 30% excess. 3. Casing Shoe Set approximately 100'TVD below SV-1 sand. Reference RPs • "Casing and Liner Running Procedure" • "Surface Casing and Cementing Guidelines" L-50 Permit application Page 7 • r • "Surface Casing Port Collar Procedure" Job 4: Drilling Intermediate Hole Hazards and Contingencies - L-50 will cross faults in the following zones: 1. lower Schrader Bluff OBe at 4,600' MD (-4520' TVDss). Est. throw 30'. 2. Kinkak JF at 7,770' MD (-7580 TVDss) Est. throw 140'. - 3. Kingak JB at 8,850' MD (-8350' TVDss) Est. throw 90'. - Consult the Lost Circulation Decision Tree regarding LCM treatments and procedures. - KICK TOLERANCE: In the scenario of 9.4 ppg pore pressure at the Kuparuk D (-6565'TVDss), -' gauge hole, a fracture lent of 12.5 ppg at the surface casing shoe, 10.6 ppg mud in the hole the kick tolerance i 50 bls. An accurate LOT will be required as well as heightened awareness for kick ection. Contact Drilling Manager if LOT is less than 12.5 ppg. L-pad development wells often have "kick tolerances" in the 30-50 bbl range, the L-50 may be tighter depending upon actual LOT results. A heightened awareness of kick detection, pre-job planning and trip tank calibration will be essential while drilling/tripping the intermediate interval. - Drilling too far into the Sag River formation prior to setting casing has been problematic in the past. When getting close to the anticipated casing point, slow the drilling rate and circulate samples for the geologist to ensure that casing is set at the optimum depth to provide fully Kingak coverage without drilling into potential losses in the Sag River zone. - There are producible hydrocarbons to the Ugnu Ma (-3860'TVDss), it will be necessary to bring cement to 500' above that zone to isolate the hydrocarbons. Reference RPs • Standard Operating Procedure for Leak-off and Formation Integrity Tests • Prudhoe Bay Directional Guidelines • Lubricants for Torque and Drag Management. • "Shale Drilling- Kingak &HRZ" Job 6: Case & Cement Intermediate Hole Hazards and Contingencies - The interval is planned to be cemented in a single stage. However, a two stage cement job may be performed. - Ensure a minimum hydrostatic equivalent of 11.8 ppg (or mud weight used to drift the HRZ and Kingak if higher) during pumping of cement preflushes/chemical washes. Losses of hole integrity and packing off has resulted from a reduction in hydrostatic pressure while pumping spacers and flushes. - Considerable losses during running and cementing the 7" longstring has been experienced on offset wells. A casing running program will be jointly issued by the ODE and Drilling Supervisor detailing circulating points and running speed. In addition a LCM pill composed of "Steel Seal" will be placed across the Schrader and Ugnu to help arrest mud dehydration. L-50 Permit application Page 8 • • Reference RPs • "Intermediate Casing and Cementing Guidelines" • "Freeze Protecting an Outer Annulus" Job 7: Drilling Production Hole Hazards and Contingencies - L-50 crosses one fault in the horizontal section of the weIl.~This fault is to be expected at ~ 10200' MD. This fault is anticipated to have a 10' throw down to the east. Relative uncertainty of the fault is 150' MD. This fault has a low risk of lost circulation. • Use only Non-fiberous LCM in the Sag. River. - KICK TOLERANCE: In the scenario of 9.3 ppg pore pressure at the Top Sag. River, gauge hole, a fracture gradient'of ;10.5 ppg at the intermediate casing shoe, 9.6 ppg mud in the hole the kick tolerance is finit . - After freeze ecting the 7" x 9-5/8" casing outer annulus with 62 bbls of dead crude (2200' MD, 2200'TVD), the hydrostatic pressure will be 7.87 ppg vs 8.4 ppg EMW of the formation pressure immediately below the shoe. Ensure adouble-barrier at the surface on the annulus exists until the cement has set up for at least 12 hours. Trapped annulus pressure may be present after pumping the dead crude as the hydrostatic pressure of the mud and crude will be near balance to the open hole. (A second LOT will be required prior to displacing freeze protect. This to satisfy AOGCC for future annular pumping permits.) Reference RPs • Standard Operating Procedure for Leak-off and Formation Integrity Tests • Prudhoe Bay Directional Guidelines • Lubricants for Torque and Drag Management. • Freeze Protecting an Outer Annulus Job 9: Run Slotted Liner Hazards and Contingencies - Minimize the time the pipe is left stationary while running the liner on the off chance that differential sticking is encountered. - Have safety joint and TIW valve ready on the rig floor. Reference RP L-50 Permit application Page 9 • • Job 12: Run Comaletion Hazards and Contingencies - Watch hole fill closely and verify proper safety valves are on the rig floor while running this completion. - Shear valves have been failing at lower than the 2500 psi differential pressure. When testing annulus maintain no more than a 1500 psi differential: 2500 psi tubing pressure, 3500 psi annulus pressure. Avoid cycling pressure (pumping up and bleeding off) prior to activating shear valve as this is thought to cause shearing at lower pressures. Reference RPs • Completion Design and Running • Freeze Protection of Inner Annulus Job 13: ND/NUIRelease Rig Hazards and Contingencies - No hazards specific to this well have been identified for this phase of the well construction. Reference RPs • Freeze Protection of inner Annulus L-50 Permit application Page 10 Variance Request Issue Compliance with AOGCC testing requirements for BOP rams after they have been used in the normal coarse of operations. Request The AOGCC is in the process of developing a guideline document clarifing 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 after 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 of 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 sea{ing ram type equipment has been used, it must be function 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 to more than 50 percent of 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 of 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 welt control; Driflin Haz r a ads and Contingencles POST THIS NOTICE IN THE DOGHOUSE I. Well Control /Reservoir Pressures: interval TD Psi TVDss Schrader 1845 8.7 ~ 4,100 Ku aruk 3,200 9.4 - 6,565 Sa .River 4135 9.3 - 8550 11. Hydrates and Shallow gas: A. Gas Hydrates are expected at L-pad near the base of the permafrost. Setting casing through the SV1 should keep hydrate exposure from extending past the surface hole. Recommended practices and precautions for drilling hydrates should be followed in the surface hole. Occasionally hydrates are encountered below the SV1. III. Lost Circulation /Breathing: A. Lost circulation risk is considered low within the horizontal section and throughout the uphole intervals. B. The Shublik in not planned to be penetrated, but well bore breathing could occur if it is. IV. Kick Tolerance /Integrity Testing: A. The 9 5/8" casing will be cemented to surface. The 7" casing will be cemented to 500' MD above the Ma sand. B. Integrity Testing: NOTE: If the LOT /FIT is less then the minimum notify the ODE immediately Kick Tolerance / tnte ri Testfn `Summa Table Casin /interval Maximum Inffux Volume Mud Wei ht Ex Pore Press Min LOT / FiT Surface / 8-31a" 50 10.6 9.4 Ku aruk 12.5 LOT Intermediate / 6-1/8" Infinite 9.6 9.3 Sa .River 10.5 FIT NOTE: All LOT /FIT will be taken with a minimum of 20-ft and a maximum of 50-ft of new hole drilled outside of the previous casing string L-Pad development wells may have "kick tolerances" in the 25 bbl range. A heightened awareness of kick detection, pre-job planning and trip tank calibration will be essential while drilling/tripping the intermediate/ roduction intervals. V. Stuck Pipe A. There could be slight differential sticking across the reservoir while running the 7" casing. Keep the casing moving as much as possible and follow the centralizer program to help with standoff. VI. Hydrogen Sulfide A. L Pad is not designated as an H2S site, however Standard Operating Procedures for H2S precautions should be followed at all times. No measurable H2S is being produced from the formation at this time. However 10 ppm is measured regularly at L pad as a result of the use of Ivishak gas lift gas.`All L pad gas lift wells will likely have H2S in this concentration. Note that al{ injection has been with produced water not seawater. H2S levels are expected to remain low until the waterflood matures. VII. Faults HZS Sumrnar r~Table Wett Name H2S Level Date of Readin #1 Closest SHL Well H2S Level L-14 No Data ' #2 Closest SHL Well H2S Level L-121 No Data Fault Location MD TVDss Throw Uncertainty Fault #1 - SV6 'L Pad' Fault 1,280 1,200 110' +/- 100' MD Fault #2 -Lower Schrader Bluff 4600 4520 140 +/- 100' MD Fault #3 -Above Kin ak JF 7770 7580 140 +/- 200' MD Fault #4 -Above Kin ak TJB 8850 8350 90 +/- 200` MD Fault #5 - Sa River 10200 8615 10 +/- 150' MD CONSULT THE L PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION L-5o Proposed Completion Cellar Elevation = Rig 9ES RKB = 28.5' 9-5/8", 40#/ft, L-80, BTC 2,776` BAKER 3-1/2" x 7" Baker Liner Tie Back Sleeve ZXP Liner Top Packer `HMC' Hydraulic Liner Hanger 9,075' 9,226` 7", 26 #/ft, L80, 8TC-Mod Date Rev By Comments 08/24/05 SRK Proposed Completion EE: FMC 4-1/16" 5M WELLHEAD: FMC Gen 5 System 11", 5M csg.head w/ 7" mandrel hanger & packoff 11" x 11", 5M, tbg spool w/ 11" x 4-1/2" tubing hanger (XO to 3-1/2") 11" X 4-1/16" Adaptor Flange 3-1/2" `X' Landing Nipple 1,800 3-1/2" Camco MMG Gas Lift Mandrels with handling pups installed . GAS LIFT MANDRELS # TVD Size Valve T e 7 TBD 1-1/2" DV 6 1-1/2" DV 5 1-1/2" DV 4 1-1/2`° DV 3 1-1/2" DCK Shear 2 1-1/2" DV 1 1-1/2" DV PRODUCTION TUBING DETAILS 3-112", 9.30 Ib/ft, L-80, I BT-M Drift/ID : 2.867"/2.992" 3-1/2" `X' Landing Nipple ~ 8,955` Downhole pressure and temperature gauge 7" x 3-1/2" Baker `S-3' Production Packer C~3 -8,975` 3-1/2" `X' Landing Nipple C~ 9,045` 3-1/2" 'X' Landing Nipple @ _9,065` 3-1/2" Mule-Shoe stabbed into 4-1/2" liner tie-back sleeveC~?9,075` 4-1/2" 12.6 #/ft, L-80, slotted liner 13 064` ,,.. ~~~' r .f~~:.~~ft~ ~~~~~1l~ttfr' ~~` WELL: L-50 API NO: 50-029- •._V i.,.li~, L-50 (P3) Proposal Schlumbergur Client: BP Exploration Alaska Field: PrudhceBayUnit-WOA StructurelSlot: Well: L-PADIS•D I~I Plan L-50 (S-D) Borehole: Plan L-50 l1WI/APl#: 50029 Survey Name 1 Date: L-50 (P3) /August 3, 2005 Tort l AHD I DDI I ERD ratio: 110.694° i 5708.15 ft 15.975 / 0.652 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location LaVLOng: N 70.35006004, W 149.32543409 Location Grid NIE Y/X: N 5978070.340 ftUS, E 583086.840 ftUS Grid Convergence Angle: +0.63528569° Vertical Section Azimuth: 103.300° Vertical Section Origin: ND Reference Datum: N 0.000 ft, E 0.000 ft Rotary Table ND Reference Elevation: 76.30 ft relative to MSL Sea Bed 1 Ground Level Elevation: 47.80 ft relative to MSL Magnetic Declination: 24.465° Total Field Strength: 57576.222 nT Magnetic Dip: 80.846° Declination Data: September 30, 2005 Magnetic Declination Model: BGGM 2005 North Reference: True North .- Total Corr Mag North -> True North: +24.465° Local Coordinates Referenced To: Well Head • Comments Measured Inclination Azimuth Subsea ND ND Vertical Along Ho{e NS EW DLS Tool Face Build Rate Walk Rate Northing Fasting Latitude Longitude Depth Section Departure R de de ft ft ft R k ft de 100 R d 100 ft 1100 R RUS ftUS KIC U.VU V.VV LV /.I/ -/O.JV U.VV V.VV V.VV U.VV V.VV V.VV -IJL.OJM V.VV V.VV Vy/8V/V.S4 .783V80.84 IV /V.JJVVOVU4 VV -14y.3CJ434U`J 300.00 0.00 207.17 223.70 300.00 0.00 0.00 0.00 0.00 0.00 -152.83M 0.00 0.00 5978070.34 583086.84 N 70.35006004 W 149.32543409 9-5/8" Csg Pt 2776.30 0.00 207.17 2700.00 2776.30 0.00 0.00 0.00 0.00 0.00 -152.83M 0.00 0.00 5978070.34 583086.84 N 70.35006004 W 149.32543409 KOP Bld 1.5/100 3900.00 0.00 207.17 3823.70 3900.00 0.00 0.00 0.00 0.00 0.00 -152.83M 0.00 0.00 5978070.34 583086.84 N 70.35006004 W 149.32543409 Crv 3/100 4000.00 1.50 207.17 3923.69 3999.99 -0.31 1.31 -1.16 -0.60 1.50 -152.91 M 1.50 0.00 5978069.17 583086.26 N 70.35005686 W 149.32543895 4100.00 4.50 207.09 4023.54 4099.84 -1.56 6.54 -5.82 -2.98 3.00 -152.92M 3.00 -0.08 5978064.49 583083.92 N 70.35004413 W 149.32545831 4200.00 7.50 207.08 4122.98 4199.28 -4.05 16.99 -15.13 -7.74 3.00 O.OOG 3.00 -0.02 5978055.13 583079.27 N 70.35001871 W 149.32549693 End Crv 4285.38 10.06 207.07 4207.35 4283.65 -7.16 30.03 -26.73 -13.67 3.00 O.OOG 3.00 -0.01 5978043.46 583073.47 N 70.34998701 W 149.32554508 Crv 4/100 6746.81 10.06 207.07 6630.93 6707.23 -109.52 460.04 -409.64 -209.37 0.00 -116.34G 0.00 0.00 5977658.44 582882.04 N 70.34894094 W 149.32713364 6800.00 9.31 195.21 6683.37 6759.67 -110.77 468.96 -417.93 -212.61 4.00 -104.64G -1.41 -22.31 5977650.12 582878.89 N 70.34891829 W 149.32715996 6900.00 9.15 170.10 6782.11 6858.41 -107.90 484.76 -433.58 -213.37 4.00 -79.85G -0.16 -25.11 5977634.46 582878.31 N 70.34887554 W 149.32716609 7000.00 10.61 148.20 6880.66 6956.96 -98.24 501.71 -449.24 -207.15 4.00 -58.26G 1.46 -21.90 5977618.87 582884.70 N 70.34883275 W 149.32711559 7100.00 13.15 133.09 6978.53 7054.63 -81.84 522.19 -464.84 -193.98 4.00 -43.47G 2.55 -15.11 5977603.42 582898.04 N 70.34879012 W 149.32700871 7200.00 16.29 123.24 7075.25 7151.55 -58.78 547.54 -480.31 -173.94 4.00 -33.94G 3.13 -9.85 5977588.18 582918.26 N 70.34874787 W 149.32684598 73Q0.00 19.73 116.61 7170.35 7246.65 -29.16 578.42 -495.56 -147:10 4.00 -27.63G 3.44 -6.62 5977573.22 582945.25 N 70.34870621 W 149.32662819 7400.00 23.34 111.93 7263.36 7339.66 6.87 615.10 -510.53 -113.62 4.00 -23.27G 3.61 -4.68 5977558.63 582978.90 N 70.34866532 W 149.32635639 7500.00 27.06 108.46 7353.83 7430.13 49.13 657.67 -525.13 -73.65 4.00 -20.13G 3.72 -3.47 5977544.47 583019.03 N 70.34862542 W 149.32603191 7600.00 30.85 105.77 7441.32 7517.62 97.42 706.07 -539.31 -27.38 4.00 -17.78G 3.76 -2.68 5977530.81 583065.44 N 70.34858670 W 149.32565633 7700.00 34.67 103.63 7525.40 7601.70 151.50 760.16 -552.98 24.96 4.00 -15.97G 3.83 -2.15 5977517.72 583117.93 N 70.34854934 W 149.32523149 7800.00 38.53 101.86 7605.66 7681.96 211.11 819.78 -566.09 83.11 4.00 -14.56G 3.86 -1.77 5977505.26 583176.22 N 70.34851353 W 149.32475946 7900.00 42.42 100.37 7681.72 7758.02 275.96 884.67 -578.57 146.80 4.00 -13.42G 3.88 -1.49 5977493.49 583240.03 N 70.34847943 W 149.32424252 End Crv 7966.34 45.00 99.50 7729.67 7805.97 321.71 930.51 -586.47 191.94 4.00 O.OOG 3.90 -1.31 5977486.09 583285.26 N 70.34845785 W 149.32387605 Crv 4/100 8716.34 45.00 99.50 8260.00 8336.30 850.88 1460.84 -674.00 715.00 0.00 O.OOG 0.00 0.00 5977404,37 583809.20 N 70.34821864 W 149.31963037 8800.00 48.35 99.52 8317.40 8393.70 911.60 1521.69 -684.05 775.02 4.00 O.OOG 4.00 0.02 5977394.99 583869.32 N 70.34819116 W 149.31914322 8900.00 52.35 99.54 8381.20 8457.50 988.40 1598.67 -696.80 850.93 4.00 O.OOG 4.00 0.02 5977383.09 583945.36 N 70.34815632 W 149.31852703 9000.00 56.35 99.56 8439.48 8515.78 1069.47 1679.91 -710.27 931.04 4.00 O.OOG 4.00 0.02 5977370.50 584025.61 N 70.34811948 W 149.31787676 9100.00 60.35 99.57 8491.94 8568.24 1154.40 1765.01 -724.41 1014.97 4.00 O.OOG 4.00 0.02 5977357.29 584109.68 N 70.34808082 W 149.31719556 9111.56 60.131 99.57 8497.62 8573.92 1164.44 1775.08 -726.09 1024.90 4.00 O.OOG 4.00 0.02 5977355.73 584119.63 N 70.34807624 W 149.31711497 9121.11 60.81 99.57 8502.28 8578.58 1172.76 1783.42 -727.48 1033.12 0.00 -0.93G 0.00 0.00 5977354.43 584127.86 N 70.34807245 W 149.31704824 WeIlDesign Ver SP 1.0 Bld(doc40x 56) S-D\Plan L-50 (S-D)\Plan L-50\L-50 (P3) Generated 8/3/2005 2:42 PM Page 1 of 2 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole NS EW DLS Tool Face Build Rate Walk Rate Northing Easting LaOtude Longitude Depth Section Departure k de de ft ft ft ft ft k de 100 k de de 100 ft de 1100 ft ftUS ftUS DGUV.VV VJ.JV JJ.JG OVJO.04 OVIJ .IY IL4G.V1 IOJJ.JI •/JJ.VI IIVL.V4 4.VV -U.~VU 4.VV -V.VI V~llJ4 J.V1 .7041~V.~1 IV fV.J40V4VIV VY I4y.J 104801/ End Crv / Tgt 1 9225.90 65.00 99.50 8550.00 8626 .30 1265.83 1876.69 -742.93 1125.10 4.00 O.OOG 4.00 -0.07 5977340.00 584220.00 N 70.34803019 W 149.31630164 7" Csg Pt 9225.93 65.00 99.50 8550.01 8626. 31 1265.85 1876.71 -742.93 1125.12 0.00 O.OOG 0.00 0.00 5977340.00 584220.02 N 70.34803019 W 149.31630147 Crv 25/100 9240.90 65.00 99.50 8556.34 8632 .64 1279.40 1890.28 -745.17 1138.51 0.00 O.OOG 0.00 0.00 5977337.91 584233.43 N 70.34802406 W 149.31619281 9300.00 79.77 99.50 8574.17 8650 .47 1335.44 1946.45 -754.44 1193.91 25.00 O.OOG 25.00 0.00 5977329.25 584288.93 N 70.34799871 W 149.31574314 Crv 6/100 9304.90 81.00 99.50 8574.99 8651 .29 1340.27 1951.29 -755.24 1198.67 25.00 0.56G 25.00 0.00 5977328.51 584293.70 N 70.34799653 W 149.31570443 9400.00 86.71 99.56 8585.17 8661 .47 1434.57 2045.80 -770.89 1291.88 6.00 0.56G 6.00 0.06 5977313.90 584387.07 N 70.34795375 W 149.31494789 End Crv 9407.51 87.16 99.56 8585.57 8661 .87 1442.05 2053.30 -772.13 1299.27 6.00 O.OOG 6.00 0.06 5977312.73 584394.47 N 70.34795034 W 149.31488789 Crv 6/100 10169.08 87.16 99.56 8623.36 8699 .66 2201.07 2813.93 -898.46 2049.35 0.00 -83.29G 0.00 0.00 5977194.74 585145.83 N 70.34760476 W 149.30879982 10200.00 87.37 97.72 8624.83 8701 .13 2231.85 2844.81 -903.10 2079.88 6.00 -83.20G 0.71 -5.97 5977190.44 585176.41 N 70.34759207 W 149.30855203 L-50 Sag Tgt2 10203.62 87.40 97.50 8625.00 8701 .30 2235.45 2848.44 -903.58 2083.47 6.00 -85.98G 0.71 -5.96 5977190.00 585180.00 N 70.34759075 W 149.30852290 End Crv 10246.97 87.59 94.90 8626.90 8703 .20 2278.43 2891.74 -908.26 2126.52 6.00 O.OOG 0.43 -5.99 5977185.80 585223.10 N 70.34757794 W 149.30817348 Crv 6!100 10788.24 87.59 94.90 8649.70 8726 .00 28'13.41 3432.53 -954.48 2665.32 0.00 -26.OSG 0.00 0.00 5977145.56 585762.33 N 70.34745120 W 149.30380023 L-50 Sag Tgt3 10795.94 88.00 94.70 8650.00 8726 .30 2821.02 3440.22 -955.12 2672.99 6.00 6.05G 5.39 -2.64 5977145.00 585770.00 N 70.34744943 W 149.30373801 10800.00 88.24 94.73 8650.13 8726 .43 2825.04 3444.28 -955.46 2677.04 6.00 6.05G 5.97 0.63 5977144.71 585774.05 N 70.34744851 W 149.30370515 End Crv 10825.13 89.74 94.88 8650.58 8726 .88 2849.88 3469.40 -957.56 2702.07 6.00 O.OOG 5.97 0.63 5977142.88 585799.10 N 70.34744274 W 149.30350196 Crv 6/100 11804.34 89.74 94.88 8654.99 8731 .29 3818.55 4448.61 -1040.94 3677.72 0.00 16.27G 0.00 0.00 5977070.34 586775.53 N 70.34721382 W 149.29558314 L-50 Sag Tgt4 11808.83 90.00 94.96 8655.00 8731 .30 3822.98 4453.10 -1041.32 3682.19 6.00 90.OOG 5.76 1.68 5977070.00 586780.00 N 70.34721277 W 149.29554687 End Crv 11808.96 90.00 94.97 8655.00 8731 .30 3823.11 4453.22 -1041.34 3682.31 6.00 O.OOG 0.00 6.00 5977069.99 586780.13 N 70.34721274 W 149.29554585 Crv 6/100 12470.66 90.00 94.97 8655.00 8731 .30 4477.83 5114.92 -1098.63 4341.53 0.00 -90.OOG 0.00 0.00 5977020.01 587439.87 N 70.34705524 W 149.29019547 L-50 Sag Tgt 5 12470.78 90.00 94.96 8655.00 8731 .30 4477.95 5115.05 -1098.64 4341.66 6.00 142.51 G 0.00 -6.00 5977020.00 587440.00 N 70.34705521 W 149.29019445 12500.00 88.61 96.03 8655.35 8731 .65 4506.89 5144.26 -1101.44 4370.74 6.00 142.50G -4.76 3.65 5977017.53 587469.11 N 70.34704752 W 149.28995843 End Crv 12512.84 88.00 96.50 8655.73 8732 .03 4519.64 5157.10 -1102.84 4383.50 6.00 O.OOG -4.76 3.65 5977016.27 587481.88 N 70.34704368 W 149.28985485 TD/4-1/2" Lnr 13064.23 88.00 96.50 8675.00 8751 .30 5066.81 5708.15 -1165.19 4931.01 0.00 O.OOG 0.00 0.00 5976960.00 588030.00 N 70.34687242 W 149.28541123 • WeIlDesign Ver SP 1.0 Bld(doc40x_56 ) S-D\Plan L-50 (S-D)\Plan L-50\L-50 (P3) Generated 8/3/2005 2:42 PM Page 2 of 2 I ' ~ Schluber er g WELL L-50 (P3) FIELD Prudhoe Bay Unit - WOA STRUCTURE L-PAD Ma9natc Paromelers Sorters LoratOn NAD2] Alasaa SIa1e Planes. zone 04. US Fact Miacelleireous Mobel: RGGM 2(05 Dip: 80.848° Date: September 30,2005 Lat: N10210 218 NoflbinA: 59]80]0.34 flUS GM Conn: x0.63528569° SIoE S-D ND Ref Rotary Table (]6.30 fl above MSL) Mag Dec'. x24A65° FS: 5]5]fi 2nT Lan: W1491931.SW Fasting: 59308684 flU5 Scala Fap: 1199990)8421 %an'. L-50 (P3) Srvy Dale: August 03, 2005 0 600 1200 1800 2400 3000 3600 4200 4800 n n n Z 0 0 c u m U V V V 600 0 -600 -1200 -1800 i00 0 -600 P3~1200 -1800 0 600 1200 1800 2400 3000 3600 4200 4800 «< W Scale = 1(in):600(ft) E »> ;~a= chl erger ,~, WELL L-50 (P3) FIELD Prudhoe Bay Unit - WOA STRUDTD RE L-PAD Magnetic Pa~amete,s SuRace LaraBOn NAD2] Plaska State Pbnn, Zaie Od, NS Feet MiueR e ars Matlel: BGGM 2005 D'p: 83.846° Dab: September 30, 2005 lel: N]0210.216 NoMb9: 59]80]0.34 flU5 GM Conv: ~O.fi3528569° Sbf SD lW ReY RoMry Tads (]6.30 R a5ove MSl) Maq Dec: X20465° FS: 5]5]6.2 nT Lm: W1491931.563 Fasting: 583086.84 M1S Sab Fad: 099990]8421 Pbn: L50 (P3) Srv/Dab: qugusl03, 2005 0 1200 2400 3600 4800 0 1200 2400 3600 0 0 N C a~ 4800 m U z 6000 7200 8400 0 1200 2400 3600 4800 6000 7200 8400 0 1200 2400 3600 4800 Vertical Section (ft) Azim = 103.3°, Scale = 1(in):1200(ft) Origin = 0 N/-S, 0 E/-W ~ i Schlumberger Anticollision Report i Company: BP Amoco Date: 8/3/2005 Time: 14:38:19 Page: I Field: Prudhoe Bay ~ Reference Site: PB L Pad Co-ordinate(NE) Reference: Well: Plan L-50 (S-D ), True North ~ Reference Wcll: Plan L-50 (S-D) Vertical (TVD) Reference: L-50 Plan S-D 76.3 Reference ~Yellpath: Plan L-50 Db: Sybase NO GLOBAL SCAN - - - - - : Using loser defined selection & scan criteria Reference: Principal Plan & PLANNED PROGRAM Interpolation Method: MD + Stations Interval: 50.00 ft Error Model: ISCWSA Ellipse Depth Range: 28.513', to 13064.23 ft Scan Method: Trav Cylinder North Maximum Radius: 10000.00!, ft Error Surface: Ellipse + Casing Survey Program for Definitive Wellpath Date: 8/3/2005 VNlidated: No Version: 2 Planned From To Survey Toolcode Tool Name ft ft 28.50 1000.00 Planned: Plan #3 V1 GYD-GC-SS Gyrodata gyro single shots 1000.00 2400.00 PI'anned: Plan #3 V1 MWD MWD - Standard 1000.00 13064.23 PI'anned: Plan #3 V1 MWD+IFR+MS MWD +IFR + Multi Station Casing Points Mll TVD Diameter Hole Site Name ft ft in in I 2776.30 2776.30 9.625 12.250 9 5/8" 9225.90 .8626.30 ?.000 8.750 7" 13064.23 8751.30 4.500 6.125 41/2" Summary <- --- O ffset Wellpath - -> Reference Offset Ctr-Ctr No-Go Allowable Site Well Wellpath YID MD llistance Area Deviation Warning ft ft ft ft ft / EX WKUPST-01 WKUPST-01 WKUPST-01 V1 10805.32 8700.00 4498.21 0.00 4498.21 Pass: Minor 1/200 PB L Pad L-01 ' L-01 V14 798.84 800.00 179.41 13.41 166.00 Pass: Major Risk PB L Pad L-02 L-02 V1 843.91 850.00 176.99 13.59 163.40 Pass: Major Risk PB L Pad L-02 L-02A V5 849.71 850.00 177.08 13.79 163.30 Pass: Major Risk PB L Pad L-02 ', L-02AP61 V2 849.71 850.00 177.08 13.79 163.30 Pass: Major Risk PB L Pad L-02 ' L-02PB1 V21 843.91 850.00 176.99 13.70 163.30 Pass: Major Risk PB L Pad L-101 '', L-101 V4 549.01 550.00 187.64 9.81 177.83 Pass: Major Risk PB L Pad L-102 ', L-102 V2 247.30 250.00 340.36 4.07 336.29 Pass: Major Risk PB L Pad L-102 ', L-102P61 V10 247.30 250.00 340.36 4.16 336.20 Pass: Major Risk PB L Pad L-102 ', L-102P62 V2 247.30 250.00 340.36 4.16 336.20 Pass: Major Risk PB L Pad L-103 ', L-103 V23 547.88 550.00 320.86 8.83 312.03 Pass: Major Risk PB L Pad L-104 ' L-104 V7 447.18 450.00 309.13 7.23 301.90 Pass: Major Risk PB L Pad L-105 ', L-105 V4 447.48 450.00 268.11 8.12 259.98 Pass: Major Risk PB L Pad L-106 ', L-106 V14 845.55 850.00 280.77 14.36 266.40 Pass: Major Risk PB L Pad L-107 ', L-107 V14 148.99 150.00 191.12 3.33 187.79 Pass: Major Risk PB L Pad L-108 ' L-108 V18 897.15 900.00 246.00 15.79 230.20 Pass: Major Risk PB L Pad L-109 '', L-109 V12 947.69 950.00 106.28 18.54 87.74 Pass: Major Risk PB L Pad L-110 ', L-110 V11 897.26 900.00 59.22 15.17 44.05 Pass: Major Risk PB L Pad L-111 ', L-111 V24 300.09 300.00 46.63 5.37 41.25 Pass: Major Risk PB L Pad L-112 ', L-112 V8 743.69 750.00 163.87 14.27 149.60 Pass: Major Risk PB L Pad L-114 '' L-114 V15 749.94 750.00 15.87 12.01 3.86 Pass: Major Risk PB L Pad L-114 ', Plan L-114A V4 Plan: P 749.94 750.00 15.87 12.06 3.81 Pass: Major Risk PB L Pad L-115 ' L-115 V7 948.87 950.00 179.60 15.58 164.03 Pass: Major Risk PB L Pad L-116 ' L-116 V10 799.74 800.00 91.71 12.85 78.86 Pass: Major Risk PB L Pad L-117 ', L-117 V11 649.18 650.00 203.71 10.51 193.20 Pass: Major Risk PB L Pad L-118 ', L-118 V9 199.39 200.00 210.47 3.72 206.76 Pass: Major Risk PB L Pad L-119 ', L-119 V9 447.38 450.00 362.04 7.57 354.47 Pass: Major Risk PB L Pad L-120 I L-120 V8 247.19 250.00 386.52 4.26 382.25 Pass: Major Risk PB L Pad L-121 L-121 V14 349.73 350.00 30.50 6.36 24.14 Pass: Major Risk PB L Pad L-121 ' L-121A V1 349.73 350,00 30.50 6.36 24.14 Pass: Major Risk PB L Pad L-122 L-122 V5 499.22 500.00 186.98 8.50 178.48 Pass: Major Risk PB L Pad L-124 ', L-124 V11 249.50 250.00 181.46 4.25 177.22 Pass: Major Risk PB L Pad L-124 ~, L-124P61 V5 249.50 250.00 181.46 4.25 177.22 Pass: Major Risk PB L Pad L-124 ', L-124PB2 V4 249.50 250.00 181.46 4.25 177.22 Pass: Major Risk PB L Pad L-200 L-200 V7 248.68 250.00 252.70 4.42 248.28 Pass: Major Risk PB L Pad L-200 ', L-200L1 V3 248.68 250.00 252.70 4.42 248.28 Pass: Major Risk PB L Pad L-200 L-200L2 V6 248.68 250.00 252.70 4.42 248.28 Pass: Major Risk PB L Pad L-201 L-201 V6 247.60 250.00 345.95 4.37 341.57 Pass: Major Risk PB L Pad L-201 L-201L1 V9 247.60 250.00 345.95 4.37 341.57 Pass: Major Risk PB L Pad L-201 I L-201L1PB1 V10 247.60 250.00 345.95 4.37 341.57 Pass: Major Risk PB L Pad L-201 I L-201 L2 V5 247.60 250.00 345.95 4.37 341.57 Pass: Major Risk Schlumberger Anticollision Report Company: BP Amoco Date: 8/3/2005 'Time: 14:38:19 Page: 2 Field: Prudhoe Bay Reference Site: PB L Pad Co-ordinate(NE) Reference: Well: Plan L-50 (S-b), True North Reference Well: Plan L-50 (S-D) Vertical (TVD) Reference: L-50 Plan S-D 76.3 Reference Wetlpath: Plan L-50 Db: Sybase Summary <------- --- Offset Wetlpath ---> Reference Offset Ctr-Ctr No-Go Allowable Site Well R'ellpath 1D MD Distance urea Deviation Warning ft ft ft ft ft PB LPad L-201 L-201 L3 V2 247.60 250.00 345.95 4.37 341.57 Pass: Major Risk PB L Pad L-201 L-201 L3P61 V6 247.60 250.00 345.95 4.37 341.57 Pass: Major Risk PB L Pad L-201 L-201PB1 V12 247.60 250.00 345.95 4.37 341.57 Pass: Major Risk PB L Pad L-201 L-201 P62 V3 247.60 250.00 345.95 4.37 341.57 Pass: Major Risk PB L Pad L-202 L-202 V5 698.98 700.00 265.59 11.80 253.79 Pass: Major Risk PB L Pad L-202 L-202L1 V7 698.98 700.00 265.59 11.80 253.79 Pass: Major Risk PB L Pad L-202 L-202L2 V6 698.98 700.00 265.59 11.80 253.79 Pass: Major Risk PB L Pad L-202 L-202L3 V6 698.98 700.00 265.59 11.80 253.79 Pass: Major Risk PB L Pad L-210 L-210 V6 296.94 300,00 372.52 4.97 367.55 Pass: Major Risk PB L Pad L-210 L-210P61 V8 296.94 300.00 372.52 4.97 367.55 Pass: Major Risk PB L Pad L-211 L-211 V6 649.14 650.00 197.00 11.40 185.60 Pass: Major Risk PB L Pad L-211 L-211 P61 V6 649.14 650.00 197.00 11.40 185.60 Pass: Major Risk PB L Pad L-212 L-212 V11 398.47 400.00 275.29 6.76 268.53 Pass: Major Risk PB L Pad L-212 L-212P61 V9 398.47 400.00 275.29 6.76 268.53 Pass: Major Risk PB L Pad L-212 L-212P62 Study V3 398.47 400.00 275.29 6.76 268.53 Pass: Major Risk PB L Pad L-212 L-212P62 V2 398.47 400.00 275.29 6.76 268.53 Pass: Major Risk PB L Pad L-214 L-214 V9 347.36 350.00 324.74 6.47 318.28 Pass: Major Risk PB L Pad L-216 L-216 V6 247.90 250.00 308.46 4.37 304.09 Pass: Major Risk PB L Pad NWE1-01 L-100 V2 349.26 350.00 193.17 6.15 187.02 Pass: Major Risk PB L Pad NWE1-01 NWE1-01 V5 349.26 350.00 193.17 6.15 187.02 Pass: Major Risk PB L Pad Plan L-03 (S-O) Plan L-03 V4 Plan: Pla 497.97 500.00 206.68 9.50 197.18 Pass: Major Risk PB L Pad Plan L-203 (N-Q) Plan L-203 V6 Plan: Pl 1146.57 1150.00 291.05 20.00 271.04 Pass: Major Risk PB L Pad Plan L-213 (S-B) Plan L-213 V5 Plan: PI 398.19 400.00 235.95 7.52 228.44 Pass: Major Risk PB L Pad Plan L-215 (N-T) Plan L-215 V2 Plan: Pl 397.29 400.00 334.19 7.61 326.57 Pass: Major Risk PB L Pad Plan L-215 (N-T) Plan L-215P61 V2 Plan: 397.29 400.00 334.19 7.61 326.57 Pass: Major Risk PB L Pad Plan L-218 (N-B) Plan L-218 V2 Plan: Pl 753.43 750.00 172.33 13.04 159.29 Pass: Major Risk PB L Pad Plan L-250 (NM-15) Plan L-250 V1 Plan: PI 598.79 .600.00 242.23 11.37 230.85 Pass: Major Risk PB L Pad Plan L-250 (NM-15) Plan L-250L1 V5 Plan: 598.79 600.00 242.23 11.37 230.85 Pass: Major Risk ~ PLANT - ~~15'00'0fd" GRID L-,,, i ^ L-SD ^ ' L-121 ^ L-110 ^ L-sr ^ L-116 ^ L-109 ^ L-SL ^ ~;-~~~ L-PAD { ^ N-L (NINE-1) N-A (NVlE-2) -~ L- 2181 L-124 ^ L-1121 ^ L-ez ^ L-122 ^ L-2111 ^ L-1151 ^ L-117 ^ L-11s L-e1 ^ ^ L-zee L-107 ^ L-03 ^ ~'° 50Z ^ L-202 ^ L-2121 s2 ^ L-SPARE L-2131 ^ ~ ^ L-203 ; L-1 e8i ^ o ^ L-2161 L-1051 ^ ~ ^ L-1031 L-106 ^ ~ ^ L-21St L-1231 ^ ^ L-201 L-te4 ^ ^ L-1191 L-2141 ^ ^ L-210f L-102 ^ ~ ~a ^ L-120 i [ ~ ( 1 // .. 34 L-PAD - -- PROJECT AREA 3 VICINITY MAP N.T.S. WELL N0. L-2181 REVISION NOTE THIS AS-BUILT DRAWING IS A REISSUE OF A PREVIOUS AS-BUILT DRAWING FOR CONDUCTOR SLOT L-NB (L-1131). SLOT L-NB IS BEING RENAMED TO L-2181. OF ,~~ A~ ~Poooo°eooe< oos~ *~049 ~ ~ ovy~ ~'e~ Richard F. Allison ~ ~ 10608 0~' ~~ o '~`'fssiarw- `~ SURVEYOR'S CERTIFICATE I HEREBY CERTIFY THAT I AM PROPERLY REGISTERED AND LICENSED TO PRACTICE LAND SURVEYING IN THE STATE OF ALASKA AND THAT THIS PLAT REPRESENTS A SURVEY MADE BY ME OR UNDER MY DIRECT SUPERVISION AND THAT ALL DIMENSIONS AND OTHER DETAILS ARE CORRECT AS OF JULY 19, 2005. LEGEND NOTES -~ RENAMED CONDUCTOR 1. DATE OF SURVEY: SEPTEMBER 22, 2002. 2. REFERENCE FIELD BOOK: W002-08 PAGES 54-56. ^ EXISTING CONDUCTOR 3. ALASKA STATE PLANE COORDINATES ARE ZONE 4, NAD 27. GEODETIC POSITIONS ARE NAD 27. 4. BASIS OF HORIZONTAL LOCATION IS OPERATOR MONUMENTS, WOA L-PAD MONUMENTATION. 5. BASIS OF ELEVATION IS OPERATOR MONUMENTS PER F.R. BELL & ASSOCIATES. ELEVATIONS ARE BPX MEAN SEA LEVEL DATUM. 6. MEAN PAD SCALE FACTOR IS 0.999907827. LOCATED WITHIN PROTRACTED SEC. 34, T. 12 N., R. 11 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC CELLAR SECTION N0. COORDINATES COORDINATE POSITION DMS POSITION(D.DD BOX ELEV. OFFSETS L 2181 Y=5,978,236.37 N= 9,999.79 70'21'01.857" 70.3505158' 47 9. 2,517' FSL - X= 583,011.22 E= 5,014.84 149'19'33.718" 149.3260331' 3,904' FEL r. xooert, °~."..~. dACOes IfhI1I CHECKED:ALLISON ~~ I ^J DA~~ 7/19/05 U DRA~NG GPB WOA L-PAD SHEET: e FR805 WDL 05-00 ®~~~OO ~o ~oR No: AS-BUILT CONDUCTOR NAME CHANGE 9 7 19 0 RENAMED E7([SIING HELL L-1131 TO L-21& JJ RFA SCALE: 1 OF 1 1-= Ise' WELL L-1131 TO L-2181 NO. DATE REVISION BY CHK ~xov+~ uw~~ eaw T12N T11N w 2 a9-6~, 25z 133 SONDRA D` STEWMAN „Mastercard Check" BP ~XPL,ORATION AK INC // ~~ 7-5 ~ V PO BOX 196612 M6 onTE ANCHORAGE, AK 99519-661.2 /~ $ ~~~ ~- • PAY TO THE ~~~C~[ " ~ ' ORDER OF 1!~ x LLA(~S ~~ Y First National"Ban Alaska 9501' 9 Ancho e, AK ---- MEM~. ~:L25200060~:99L4~~~6227~~~L564~~' 0L33 ~'~ • • TRANSMITAL LETTER CHECK LIST CIRCLE APPROPRIATE LETTER/PARAGRAPHS TO BE INCLUDED IN TRANSMITTAL LETTER WELL NAME ~~~C l ~ ..~2' PTD# CHECK WHAT ADD-ONS "CLUE" APPLIES (OPTIONS) MULTI The permit is for a new wellbore segment of LATERAL existing well , Permit No, API No. (If API number Production should continue to be reported as last two (2) digits a function of the original API number stated are between 60-69) above. PILOT HOLE In accordance with 20 AAC 25.005(f), all (PIS records, data and logs acquired for the pilot hole must be clearly differentiated in both name (name on permit plus PH) and API number (50 - 70/80) from records, data and logs. acquired for well (name on permit). SPACING The permit is approved subject to full EXCEPTION compliance with 20 AAC 25.055. Approval to , perforate and produce/infect is contingent upon issuance of a conservation order approving a spacing exception. (Company Name) assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the SAMPLE Commission must be in no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Rev: 04/01/05 C\jody\transmittal_checklist WELL PERMIT CHECKLIST Field & Pool PRUDHOE BAY, PRUDHOE OIL - 640150 Well Name: PRUDHOE BAY UN PBU L-50 Program DEV Well bore seg ^ PTD#:2051360 Company BP EXPLORATION (ALASKAN INC Initial Classffype DEV l PEND GeoArea 890 UnR 11650 On1Off Shore On Annular Disposal ^ Administration 1 Permit-fee attached - - - - Yes - - - - - - - 2 Lease number appropriate_ - - _ . - - - _ .. - _ - Yes _ _ Qmission corrected on-10-4.07:_ Surface &top-prod-interval in_ADL_028039; TD in ADL 028238._ _ _ _ - - _ - 3 Uniquewelfnameandnumbe[- -- --- --------- --- ------ -- -- - Yes- - ------ -- --- - ... -- --------- -- --------------------------------- 4 Well located ina_definedpool___________________________________ Yes_ ___-.PRUDHOEBAY,_P_RUDHOE OIL-640150-___________---________--__----.__-_-.-_. 5 Well located proper distance-from drilling unitboundary_ - - _ . - - - _ _ .... - Yes PQOI is governed by CO 341D: no-restrjctions on spacing other than-more than 500' from external boundary.- - _ - 6 Well located proper distance-f[om.other wells___________________________ Yes_ _-_______------.---_-.-____ ----------------------------------------------- 7 Sufficient acreageayailablein_dril_lingunit______________________---_-____ Yes_ _-----.________-__-__------.--________------_-______-------_--____________ 8 IfdeYiated,is_wellboreplat_included___________________________________ Yes- -___________---.------_--_________---------_____ -- 9 Operator only affected party- - - - - - - - Yes - - - - - - - - - - - 10 Operator bas.appropriate_bondinforce ------- --------- ---- - -- Yes- -- -- ---- --------- -- ----------------- -- ---------- --------- -- -- 11 Permit_canbeissuedwithoutconservationorder____________________________ Yes- ___________.._._____-_____-________---__-___-__.___.__- ________--___-_ Appr Date 12 Permitcan be issued without administrative_approval - - - - _ _ .. _ _ _ Yes . _ . - _ - - cr:n oi~ ~~~nnF 13 Can permit be approved before 15-day wait Yes 14 Welllocatedwithinareaandslrataauthorizedf~ylnjectionOrde[#(put1O#in_comments)-(For- NA__ ____________-__-__--__-___-..__-_--_--______.__-__--_.-__.__..__.__ 15 All wells-within 1l4_mile area.of review identified (For service well only)- - - - - - - - - - - - - -- NA - _ - - - _ - - - _ _ - - - - - _ - - - _ - - _ --------------------------------------------------- 16 Pre-produced injector; duratl~n of preproduction Less than-3 months_(For_service well only) _ _ NA- - - - - - - - - - - - - - -- - - 17 AC_M_P_FindingofConsist_envy-has beenissued-for_thispr_oject___________________ NA-_ _______ _--.__..____--__-___-__..__-__--__-____.._._ __--___-____-.___ Engineering 18 Conducto[string_provided---__ __________________________________ Yes_ ______20"@110'._________-__-----_---___________--_--________------------- 19 Surface casirlg_p_rotectsalLkn4wn U$DWs - - - - - Yes - - - - - - - - - - - - 20 CMT_vol.adequate_tocirculate-onconductor_&surf-csg _________________. Yes- ______Adequateexcess,_______________--_--.___________._.. -------------------- 21 CMT-vol-adequate_totie-in long string tosurfcsg______ __.-__ --------------- No__ ____-_...._________________________-_--_--._.._____-__- _________..-_._ 22 CMT_willcoyerallkno_wn_productivehorizons_---_____-----_______-- No-_ ______Slottedliner.---_________________________________ _____________-__-_ 23 Casing designs adequatef_orC,T,B&_permafr_ost--------------------- Yes- ----------------------------------.-----------------.--. ----------- 24 Adequate tankage.or reserve pit - - - - - - - - - Yes - Nabors.9ES. - - - - - - - - - - - - - - - - - - 25 If_a_re-drill, has_a_ 10-403 for abandonment been approved _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ NA_ - - - - - _ _ New well, _ _ _ _ - _ _ - - - - - _ - - 26 Adequatewellboreseparakionproposed- --------- ---------- --- -- -- Yes- ----... -- ----------- ------------------ --------- -- --------- -- - 27 Ifdjverterrequired,doesitmeetregu_lations__________________________.._. Yes_ _______--_---__________________..__-________-_____.____________.___.._._ Appr Date 28 Drillingfluid_programsehematic&equiplistadequate_________________________ Yes_ ______MaxMW-11,8-ppg.__________.________________-__--____..___._._ WGA 9/12/2005 29 B_0_PES,dotheymeetregulation----------------------------------- Yes- -----------------------------------------------------------------------_ 30 BOPE_pressratingappropriate;testto-(putpsigincomments)____________________ Yes_ ___---Test to350Qpsi._MSP3272psi.-----__-______-_-.----_____________----_-_--__ 31 Choke_manifoldcgmplieswlAPI_RP-53(May84)____________________________ Yes_ _______...._ ------------------------------------------------------------- 32 Work willoccu[withoutoperationshutdown_______________________________ Yes_ ___-_._._..__--_____--_-.__.._--_____-____..__.__- __-._-._____..__.- 33 Is presence-of H2S gas probable - - - - N0 Not an H2S pad. - - - - - - - - - - - 34 Mechanical condition of wells within AOR verified (Forsenrice well onlya - _ - _ _ NA- - - _ _ - _ _ - -- - - - -- - Geology 35 Permitcan be issued w!o hydrogen_sul_fide measures - - - - _ _ _ Yes _ _ - _ No signifcant H2S measured_to date on L-Pad.- - - _ _ . _ - - - - - - - - _ 36 _D_ata-presented on_ potential overpressure zones- - _ _ _ _ - - - - - _ Yes - - - - - - _ Expected r_eservoirpressure is 9,3_ppg EMW; will be drilled v~ith 9.6 mud. Pp9 -------------- Appr Date 37 Seismic analysis. ofshallow gas_zones- - - - No_ Gas hydrates expected from 1700' t9 2500' MD._Dnling hazards section of application is extensive $~ detailed, - _ _ SFD 9!12!2005 38 Seabed condition survey_(ifoff-shore) - _ _ . - - _ .. _ - _ - - - NA_ - - - - - - _ This wil_I be the 49th well drilled from L-Pad. - - 39 _Contactnam_elphoneforweeklyprogress-repo[ts[exploratoryonly]_-_________..... NA__ ____________________--_--_____..__.-.--__-___-_.._...--_ ___-____...__._ Geologic Engineering Public Date: Date Date Horizontal Sag River development well. Commissioner: Commissioner Commissioner: pj.~ ~~13f S ~~~ ~ ~3-os' •
