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210-019
• 0 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. O) 0 - 0-19 Well History File Identifier Organizing (done) ❑ Two -sided 1111111111111111111 ❑ Rescan Needed 1111111111111111111 RES AN DIGITAL DATA OVERSIZED (Scannable) Color Items: ❑ Diskettes, No. ❑ Maps: ❑ Greyscale Items: ❑ Other, No/Type: ❑ Other Items Scannable by a Large Scanner ❑ Poor Quality Originals: OVERSIZED (Non - Scannable) ❑ Other: . ❑ Logs of various kinds: NOTES: ❑ Other:: BY: det° Date: 10 /cj `a- /s/ P Project Proofing 1111111111111111111 BY: Maria Date: W /s / o . /s/ al P Scanning Preparation / x 30 = + ji = TOTAL PAGES S BY: Maria Date: / (Count does not include cover sheet) in/ `- 15 / a. /s/ Ir r . Production Scanning 11111111111 I 11111 Stage 1 Page Count from Scanned File: J (Count does include covers eet) Page Count Matches Number in Scanning Preparation: YES NO BY: _ Maria Date: 6//1/45110- /s/ i li In 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. 1111 ReScanned 111111111111111111 BY: Maria Date: /s/ Comments about this file: Quality Checked 111llhIII1IIIIhI1lI 10/6/2005 Well History File Cover Page.doc DATA SUBMITTAL COMPLIANCE REPORT 6/12/2012 Permit to Drill 2100190 Well Name /No. 000GURUK NUQ ODSN -21 Operator PIONEER NATURAL RESOURCES AL API No. 50- 703 - 20614 -00 -00 MD TVD Completion Date Completion Status Current Status EXPIR UIC N REQUIRED INFORMATION Mud Log No Samples No Directional Survey Yes DATA INFORMATION Types Electric or Other Logs Run: (data taken from Logs Portion of Master Well Data Maint Well Log Information: Log/ Electr Data Digital Dataset Log Log Run Interval OH / Type Med /Frmt Number Name Scale Media No Start Stop CH Received Comments Well Cores /Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments ADDITIONAL INFORMATION Well Cored? Y / N Daily History Received? Y / N Chips Received? Y / N Formation Tops Y / N Analysis Y / N Received? Comments: r Compliance Reviewed By: Pc 6 Date: T Vki'V • • 7 RI k )" r 7 SEAN PARNELL, GOVERNOR ALASKA OIL AND GAS 333 W. 7th AVENUE, SUITE 100 CONSERVATION COMPIISSION ANCHORAGE, ALASKA 99501 -3539 PHONE (907) 279 -1433 FAX (907) 276 -7542 Mr. James Franks Sr. Staff Drilling Engineer Pioneer Natural Resources Alaska, Inc. 700 G Street, Suite 600 Anchorage, AK 99501 Re: Oooguruk Field, Nuiqsut Oil Pool, ODSN -21 Pioneer Natural Resources Alaska, Inc. Permit No: 210 -019 Surface Location: 2912' FSL, 1199' FEL, Sec. 11, T13N, R7E, UM Bottomhole Location: 3350' FSL, 597' FEL, Sec. 23, T13N, R7E, UM Dear Mr. Franks: Enclosed is the approved application for permit to drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. When providing notice for a representative of the Commission to witness any required test, contact the Commission's petroleum field inspector at (907) 659 -3607 (pager). Sincerely, Dani- . Seamount, Jr. ion Chair DATED this t day of February, 2010 cc: Department of Fish 86 Game, Habitat Section w/ o encl. (via e -mail) Department of Environmental Conservation w/o encl. (via 3 -mail) KEUE1VtIJ STATE OF ALASKA � FEB 4 9 2010 AL OA OIL AND GAS CONSERVATION COM ION PERMIT TO DRILL Alaska Oil &Gas Cons. Commission 20 AAC 25.005 Ant la. Type of Work: lb. Proposed Well Class: Development - Oil ei • Service - Winj ❑ Single Zone Q . 1c. Specify i well i roposed for: Drill 0 . Redrill ❑ Stratigraphic Test ❑ Development - Gas ❑ Service - Supply ❑ Multiple Zone ❑ Coalbed Gas ❑ Gas Hydrates ❑ Re -entry ❑ Exploratory ❑ Service - WAG El Service - Disp ❑ Shale Gas 2. Operator Name: 5. Bond: Blanket 5 Single Well ❑ 11. Well Name and Number: Pioneer Natural Resources Alaska, Inc. Bond No. 103655283 ' ODSN -21 • 3. Address: 700 G Street, Suite 600 6. Proposed Depth: 12. Field /Pool(s): Anchorage, AK 99501 MD: 17,617' • TVD: 6406' . 4a. Location of Well (Governmental Section): 7. Property Designation (Lease Number): Oooguruk - Nuiqsut Oil Pool • Surface: 2912' FSL, 1199' FEL, Sec. 11, T13N, R7E, UM ADL 355036/ ADL 355038 ' Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 4724' FSL, 5106' FEL, Sec. 14, T13N, R7E, UM 417497 2/12/20115 2 - ' // Total Depth: 9. Acres in Property: 14. Distance to Nearest Property: . . o it 3350' FSL, 597' FEL, Sec. 23, T13N, R7E, UM 5760 5453' 4b. Location of Well (State Base Plane Coordinates - NAD 27): 10. KB Elevation above MSL: 56.2 feet 15. Distance to Nearest Well Open Surface: x- 469798.62 • y- 6031028.53. Zone- ASP 4 GL Elevation above MSL: 13.5 feet to Same Pool: ODSN -40 is 1435' away • 16. Deviated wells: Kickoff depth: 500 feet . 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Maximum Hole Angle: 94.0 degrees Downhole: 3264 Surface: 2560 • 18. Casing Program: Specifications Top - Setting Depth - Bottom Cement Quantity, c.f. or sacks Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 24" 16" 109# H -40 Welded 115' Surface Surface 158' ' 158' Driven 14 -1/2" 11 -3/4" 60# L -80 Hyd 521 3374' Surface Surface 3417' , 3000' 489 sx PF 'L'; 259 sx Class 'G' 11 -3/4" 9 -5/8" 40# L -80 Hyd 521 4221' 3267' 2917' 7488' • 5285' 200 sx Class 'G' 8 -1/2" 7" 2641 L -80 BTC -M 9489' • Surface Surface 9532' • 6190' 185 sx Class 'G' 6 -1/8" 4 -1/2" 12.641 L -80 IBT -M 8235' 9382' 6151' 17,617' • 6406' • Uncemented Solid w/ Perf Pups 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re =Entry Operations) Total Depth MD (ft): Total Depth TVD (ft): Plugs (measured): Effect. Depth MD (ft): Effect. Depth TVD (ft): Junk (measured): Casing Length Size .Cement Volume MD TVD Conductor /Structural Surface Intermediate . Production . Liner Perforation Depth MD (ft): Perforation Depth TVD (ft): 20. Attachments: Property Plat 0 BOP Sketch ❑ Drilling Program 5 Time v. Depth Plot ❑ Shallow Hazard Analysis❑ Diverter Sketch ❑ Seabed Report ❑ Drilling Fluid Program 5 20 AAC 25.050 requirements 21. Verbal Approval: Commission Representative: Date 22. I hereby certify that the foregoing is true and correct. Contact Alex Vaughan, 343 - 2186 Prepared By: Kathy Campoamor, 343 -2183 Printed Name James Franks Title Sr. Staff Drilling Engineer Signature ,.-' ' " Phone 343 - 2179 Date 2/8/2010 Commission Use Only Permit to Drill API Number: / A v 1 See cover letter for other Number: .. /� n / 50- 7u`3 ` /7)6 / � 'L-�' - C- t Date: /d requirements. Conditions of approval : If box is checked, well may not be used to explore for, test, or produce coalbed methane, gas hydrates, or gas contained in shales: Q' Other: • 41500 Ps.e: Ao p es-f Samples req'd: Yes ❑ No[' Mud log req'd: Yes ❑ No [a .-7iS K " ' H measures: Yes ❑ No❑// Directional svy req'd: Yes [' No ❑ - (J I (/G. --kr' Gt1C'-t V 44 pe-� ZO � F/T � Z O 35 Ch) Ca) 2/ � � APPROVED BY THE COMMISSION //'</.°1'//1 DATE: , COMMISSIONER il R 1 GI I , . ,,,,,_ z.i.e./0 /, , „.., , Form 10 - 401 (Revised 7/2009) This permit is valid for 24 months from the date of approval (20 AAC 25.005(g)) Subm 'n p licate �l ®0D P I N E R NATURAL RESOURCES RECEIVED February 8, 2010 FEB 0 9 2010 Alooko 011 & ass Cone. Commission Anohoroga State of Alaska Alaska Oil and Gas Conservation Commission 333 West 7 Avenue, Suite #100 Anchorage, AK 99501 RE: Application for Permit to Drill ODSN -21 Surface Location: 2912' FSL, 1199' FEL, Sec 11, T13N, R7E, UM X = 469798.62, Y = 6031028.53, ASP4 Pioneer Natural Resources Alaska, Inc. (PNRA) hereby applies for a Permit to Drill a development well from the Oooguruk Drill Site (ODS) located within the Oooguruk Unit. The well is designed to be a production well in the Oooguruk - Nuiqsut formation. PNRA requests the Permit to Drill based on approved Pool Rules. As indicated in the attachments, the drilling and well construction program includes the following: • Surface Hole: o Drill 14 -1/2" to -3417' MD / 3000' TVDrkb and set 11 -3/4" flush joint casing. • Intermediate Hole 1: o Drill 10 -5/8" and under -ream while drilling (UWD) to 11 -3/4" to -7488' MD / 5285' TVDrkb. Run and set a 9 -5/8" Flush Joint Drilling Liner. • Intermediate Hole 2: o Drill 8 -1/2" to -9532' MD / 6190' TVDrkb and set a 7" Intermediate casing into the top of the Oooguruk - Nuiqsut formation. • Production Hole: o Drill 6 -1/8" horizontally to -17,617' MD / 6406' TVDrkb and set a 4 -1/2" solid liner with perforated pups. • Completion: o 2 -7/8" tubing and an ESP. PNRA will implement Managed Pressure Drilling technology (MPD) while drilling the Intermediate 2 and Production hole sections of ODSN -21. • Alaska Oil & Gas Conservation Commission February 5 2009 Page 2 of 3 PNRA plans to use this technique while drilling the Intermediate 2 and Production intervals as outlined below. • From TD of Intermediate 1 until Intermediate 2 TD o Use -9.8 -10.5 ppg fluid while using MPD to control pressure from the surface to -12.5 ppg EMW at the bottom of the hole. • Open formations: • Kuparuk Sands, -9.8 ppg Pore Pressure • • Nuiqsut Sands, -9.8 ppg Pore Pressure . • From the Intermediate 2 Shoe to TD o Use - 7.2 -8.2 ppg fluid while using MPD to control pressure from the surface to -9.8 -10.2 ppg EMW at the bottom of the hole during connections and while tripping Utilizing the MPD process described above allows PNRA to reduce the materials needed for the well, increasing the overall safety of the personnel on the development by handling less • material. In addition the lower solids in the production section mud system will reduce formation damage along the sandface of the well. v / Based on information previously submitted to the AOGCC and included in the AOGCC Oooguruk Field File, PNRA requests an exemption from 20 AAC 25.035 (c) which requires a diverter system be installed on the well while drilling the surface interval. In the future, PNRA may provide information and permitting requesting annular disposal of drilling wastes on this well. Please find attached information as required by 20 AAC 25.005 (a) and (c) for your review. Pertinent information attached to this application includes the following: 1) Form 10 -401 Application for Permit to Drill per 20 AAC 25.005 (a). 2) A copy of the proposed drilling program per 20 AAC 25.005 (c) (13) including: a. The drilling fluid program as required by 20 AAC 25.033 b. Complete logging and mud logging operations are planned and descriptions • are attached. c. A complete proposed casing and cementing program is attached as per 20 AAC 25.030. d. A summary of the drilling operations. e. A summary of drilling hazards per 20 AAC 25.005 (c) (4). f. A wellbore schematic is also attached visually depicting the proposed well. 3) A copy of the Planned Directional Well Path - including traveling cylinder and development layout plots. The following items are on file with the AOGCC: • • Alaska Oil & Gas Conservation Commission February 5 2009 Page 3of3 1) A plat showing the surface location proposed for the well per 20 AAC 25.005 (c) (2). 2) Diagrams and descriptions of the BOP and diverter equipment to be used on Nabors Alaska Rig 19 -AC as required by 20 AAC 25.035 (b) and (c). 3) A description of the procedure for conducting formation integrity tests per 20 AAC 25.035 (c) (5). 4) PNRA does not anticipate the presence of H2S in the formations to be encountered in this well. However, H2S monitoring equipment as specified in 20 AAC 25.065(1) , will be functioning on the rig as standard operating procedure for all wells drilled by that rig. Products for treating H2S contamination in the drilling mud system will be maintained on the ODS. The following are PNRA's designated contacts for reporting responsibilities to the Commission: 1) Completion Report Vern Johnson, Senior Staff Drilling Engineer (20 AAC 25.070) 907.343.2111 vern.johnson @pxd.com 2) Geologic Data and Logs Paul Daggett, Senior Staff Geophysicist (20 AAC 25.071) 907.343.2134 paul.daggett @pxd.com The anticipated spud date for this well is February 28 2010 If you have any questions or require further information, please contact James Franks at 907.343.2179. Sincerely, James Franks Senior Staff Drilling Engineer Attachments: Form 10 -401 Supporting permit information cc: ODSN -21 Well File • Permit to Drill Well Plan Summary ODSN -21 Oooguruk - Nuiqsut Production Well Surface TD @ 3,417' MD / 3,000' TVD Drilling Liner TD @ 7,488' MD / 5,285' TVD Intermediate TD @ 9,532' MD / 6,190' TVD Production TD @ 17,617' MD / 6,406' TVD6 ' Surface Location: 2912' FSL, 1199' FEL, Sec 11, T13N, R7E, UM • ASP 4 (NAD27) projection X = 469798.62 • 1 Y = 6031028.53 ' Target: Oooguruk - Nuiqsut 4724' FSL, 5106' FEL, Sec. 14, T13N, R7E, Umiat X = 465868.45 1 Y = 6027597.94 1 6196' TVDrkb Bottom Hole Location: 3350' FSL, 597' FEL, Sec. 23, T13N, R7E, Umiat ' X = 470369.00 Y = 6020905.00 6406' TVDrkb AFE Number: TBA Est. Start Date: February 28, 2010 • Rig: Nabors 19AC Operating days: 52 days to Drill and Complete TD: 17617' MD / 6406 TVDrkb Objective: Nuiqsut 1 Well Type (exp, dev, etc): Development • Well Design: Modified Slimhole (11 -3/4" x 9 -5/8" liner x 7" x 4 -1/2" liner) — Producer — wp04 Current Mechanical Condition: Well Bay Footing / ODS Ground Level: Elevation above MSL: 13.5' • RKB to Ground Level: 42.66' Rig Elevation: RKB + MSL = 56.16' • Conductor: 158' MDrkb Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 1 of 10 • Well Control: 14 -1/2" Surface Section: • Maximum anticipated BHP: 1342 psi @ 3000'TVD (Based on seawater gradient of 0.4472 psi /ft) • Maximum surface pressure: 1012 psi @ surface (Based on BHP and a full column of gas from TD @ 0.11 psi /ft) 10 -5/8" x 11 -3/4" Drilling Liner Hole Section: • Maximum anticipated BHP: 2363 psi @ 5285' TVD (Based on seawater gradient of 0.4472 psi /ft) • Maximum surface pressure: 1782 psi @ surface (Based on BHP and a full column of gas from TD @ 0.11 psi /ft) 8 -1/2" Intermediate Casing Hole Section: • Maximum anticipated BHP: 3154 psi @ 6190' TVD (Based on 9.8 ppg Oooguruk - Kuparuk pore pressure) • Maximum surface pressure: 2474 psi @ surface (Based on BHP and a full column of gas from TD @ 0.11 psi /ft) 6 -1/8" Production Liner Hole Section: • Maximum anticipated BHP: 3264 psi @ 6406' TVD (Based on 9.8 ppg Oooguruk - Nuiqsut pore pressure) • • Maximum surface pressure: 2560 psi @ surface (Based on BHP and a full column of gas from TD @ 0.11 psi /ft) Maximum casing pressure: 4500 psi @ surface Planned BOP test pressure: 4500 psi (annular to 2500 psi) Due to required 4500 psi casing pressure test. Planned completion fluid: 10.2 ppg Brine /6.8 ppg Diesel Diverter (see attached schematic) — Note: Requesting Diverter Exemption on a Well by Well Basis): Hydril 21 -1/4" 2M annular BOP 1 16" full opening knife gate valve, hydraulically actuated 16" diverter line 5000 psi BOP stack (see attached schematic): Hydril GK 11" 5M annular BOP Hydril 11" 5M single ram BOP w/ studded connections Hydril 11" 5M single ram BOP w/ studded connections Drilling cross 11" 5M x 11" 5M with 2 ea. 3 -1/8" 5M side outlets w /flanged connections 2 ea. 3 -1/8" 5M full opening inner manual gate valves mounted on drilling cross 2 ea. 3 -1/8" 5M full opening outer remote hydraulic controlled gate valves mounted on inner gate valves. Hydril 11" 5M single ram BOP w/ studded connections Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 2 of 10 0 • Formation Integrity Testing Requirements: Test Point Depth Test Type Minimum EMW 11 -3/4" Surface Shoe Rathole + 20' to 50' from shoe LOT 12.5 ppg 9 -5/8" Drilling Liner Shoe Rathole + 20' from shoe LOT 12.5 ppg (14.0 ppg max) 7" Intermediate Shoe Rathole + 20' from shoe FIT 12.5 ppg Drilling Fluids Program: Surface Hole Mud Properties: 14 -1/2" hole Spud Mud Interval Density (ppg) Viscosity (secs) YP PV 10 sec gel API FL Initial 8.8 150 -200 35 - 50 15 - 25 10 - 15 unrestricted Final 9.2 -9.6 70 -100 25 - 35 15 - 25 10 - 15 <12 Drilling Liner Mud Properties: 10 -5/8" x 11 -3/4" hole LSND Interval Density (ppg) Viscosity (secs) YP PV MBT API FL Initial to TD 10.0 ppg 40 - 60 15 - 25 12 - 20 < 12 8 -10 Intermediate Hole Mud Properties: 8 -1/2" hole LSND Interval Density (ppg) Viscosity (secs) YP PV MBT API FL Initial to TD 9.8 - 10.5 ppg 50 - 70 15 - 25 15 - 25 < 10 3 - 5 (8 -10 ( -12.5 ppg via . HTHP) MPD) Production Hole Mud Properties: 6 -1/8" hole MOBM Interval Density (ppg) Viscosity (secs) YP PV ES HTHP 0 / W Initial to TD 7.2 - 8.2 ppg 55 - 80 12 - 25 10 - 20 800 -2000 <6 94 / 6 ( -9.8 ppg via 4 MPD) Formation Markers: Formation Tops MD (ft) TVDrkb (ft) Pore Press. EMW Comments (psi) (PP9) Base of Permafrost 1707 1666 Top West Sak 2370 2290 1030 8.65 Base of fluvial sands Tuffaceous Shales 3274 2921 Brook 2b 5690 4261 Top Torok Ss 7042 5018 2257 8.65 Base Torok Ss 7471 5275 Top Hrz 8380 5786 Base Hrz 8646 5909 Kalubik Mkr 8760 5956 Top Kuparuk 8918 6016 Base Kuparuk 8975 6036 3076 9.8 Top Nuiqsut 9556 6196 3157 9.8 TD 17617 • 6406 • Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 3 of 10 • • Logging Program: 14 -1/2" Section: Drilling: Dir / GR Open Hole: N/A Cased Hole: N/A 10 -5/8" x 11 -3/4" Section: Drilling: Dir / GR Open Hole: N/A Cased Hole: N/A 8 -1/2" Section: Drilling: Dir / GR / Res / Dens / Neut Open Hole: N/A Cased Hole: Bat Sonic 6 -1/8" Section: Drilling: Mud logging • Dir / GR / Azm Res / ALD / Neut / PWD / Bat Sonic Open Hole: N/A Cased Hole: N/A Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 4 of 10 0 • Casing Program: Hole Casing / Weight Grade Conn. Casing Csg/Tbg Top Hole Btm Size Tubing Length MDrkb MDrkb/TVDrkb 24" 16" 109# H -40 Welded 115' Surface 158' / 158' 14 -1/2" 11 -3/4" 60# L -80 Hydril 521 3,374' Surface 3,417' / 3,000' 6A.N0 G0-- 4i 11-3/4" 9 -5/8" 40# L -80 Hydril 521 4,221' 3,267' 7,488' / 5,285' R 8 -1/2" 7" 26# L -80 BTC -M 9,489' Surface 9,532' / 6,190' 4 -1/2" 6 -1/8" solid w/ 12.6# L -80 IBT -M 8,235' 9,382' 17,617' / 6,406' perf pups Tubing 2 -7/8" 6.4# L -80 IBT -M 9,339' Surface 9,382' / 6,151' Casing Properties Size Weight Grade ID Drift Conn. Internal Collapse Tensile Strength ID Yield (psi) (psi) Joint Body 16" 109# H -40 14.67" 14.5" Welded Conductor casing 11 -3/4" 60# L -80 10.772" 10.62" Hydril 521 5830 3180 1384M 1384M 9 -5/8" 40# L -80 8.835' 8.75" Hydril 521 5750 3090 916 M 916 M 7" 26# L -80 6.276" 6.151 BTC -M 7240 5410 604 M 604 M 4 -1/2" solid w/ 12.6# L -80 3.958" 3.833" IBT -M na na 289 M 289 M pert pups 2 -7/8" 6.4# L -80 2.441" 2.347" IBT -M 10570 11170 105 M 145 M Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 5 of 10 • • Cement Calculations: Casing Size: 1 11 -3/4" Surface Casing - single stage Basis: Lead: 75% excess over gauge hole in permafrost + 50 bbls, 30% excess over gauge hole below permafrost Lead TOC: Surface Tail: 500' of open hole with 30% excess, plus 85' shoe track Tail TOC: 2917' MD y r Total Cement Volume: Preflush 10 bbl water Spacer 40 bbl 10.0 ppg Dual Spacer Lead 361 bbls / 489 x of 10.92 ppg Type "L" Permafrost Cement. 4.15 cf /sk, 20.0 gps water req. Tail 55 bbls / 259 sx of 15.9 ppg Premium "G" + adds. 1.19 cf /sk, 5.23 gps water req. Displ 365 bbls Mud Temp BHST -55° F, BHCT -60° F estimated Should hole conditions indicate that we will have trouble getting cement to surface, a TAM Port Collar may be run in the casing string and a staged cement job will be performed. In the event that cement is not circulated to surface during the initial surface casing cement job, notify the AOGCC of the upcoming remedial cement work for possible witness of cement to surface. Casing Size: 1 9 -5/8" Intermediate 1 - Drilling Liner - single stage Basis: TOC: 6988' MD - 500' MD of open hole 60% excess, plus 85' shoe track Total Cement Volume: Preflush 10 bbl water Spacer 60 bbl 10 ppg Dual Spacer Primary 42 bbls / 200 sx Premium "G" + adds. 1.17 cf /sk Displ 371 bbls mud Temp BHST - 135° F at 5366' TVDrkb, -110° F BHCT Casing Size: 1 7" Intermediate 2 - single stage Basis: TOC: - 8418'MD - 500' MD above the top of the Kuparuk 40% excess, plus 85' shoe track y ,P Total Cement Volume: Preflush 10 bbl water Spacer 40 bbl 12.5 ppg Dual Spacer Primary 38 bbls / 185 sx Premium "G" + adds. 1.17 cf /sk Displ 361 bbls mud Temp BHST - 165° F at 6100' TVDrkb, -135° F BHCT This well is outside the 1/2 mile radius around the disposal well at the intersection with the Torok disposal zone. Disposal: Annular Infection: Currently not requested, but may be requested in the future. Cuttings Handling: All Class 2 solids will be processed on the Oooguruk Drill Site by the Grind and Inject facility in the Rig Support Complex and injected down the approved Class 1 / Class 2 disposal well, ODSDW1 -44. Fluid Handling: All Class 1 and Class 2 fluids will be processed on the Oooguruk Drill Site by the Grind and Inject facility in the Rig Support Complex and injected down the approved Class 1 / Class 2 disposal well, ODSDW1 -44. Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 6 of 10 • • Pioneer Natural Resources Well Plan Summary Drilling Operations Pre -Riq Work 1. 16" Conductors have been set and the Well Bay modules have been placed. Riq Activity: Drill and Complete 1. MIRU Nabors 19AC over pre - installed 16" conductor casing. 2. Nipple up spacer spools and riser. 3. MU 14 -1/2" Directional Drilling, MWD /LWD assembly. Drill surface hole to the casing point, making wiper trips as necessary. Circulate and condition the hole to run casing. POOH. 4. Run and cement the 11 -3/4" surface casing. Bump the plug and bring the pressure up to 3500 psi — chart and hold for 30 minute pressure test. Send chart to ODE. Note: A Port Collar may be run based on hole conditions at Company Rep discretion. 5. Ensure floats are holding. WOC if needed. 6. ND Riser, NU Drilling Spool and BOPE and test. Test BOPE to 250/4500 psi - Notify AOGCC 48 hours in advance of test. 7. MU 10 -5/8" x 11 -3/4" RSS, MWD /LWD (BHA will be a 10 -5/8" pilot hole opened to 11 -3/4" while drilling). 8. RIH and cleanout casing to landing collar. Displace well over to Intermediate 1 drilling fluid. 9. Drill through surface shoe, rathole + 20' of new hole and perform LOT to a minimum of 12.5 ppg. 10. Drill 10 -5/8" x 11 -3/4" Intermediate 1 to casing point. 11. Change one set of pipe rams to 9 -5/8" and test BOPE as required. 12. Run 9 -5/8" drilling liner on 5" DP. Set liner hanger, release from liner and cement. 13. Bump the plug, increase pressure to 3500 psi and hold pressure for 5 minutes • This will provide a quick integrity test of the 9 -5/8" liner • Note the pressure test in the morning report 14. Release pressure and ensure floats are holding • This will check the integrity of the floats to ensure there isn't a flow path through the liner shoe 15. Set liner top packer and test the liner top and the liner top to 3500 psi for 5 minutes • This will check the integrity of the liner top packer to ensure isolation between the liner and the surface casing • Note the pressure test of the liner top in the morning report Note: The surface casing was pressure tested to 3500 psi for 30 minutes prior to drilling out the surface casing shoe 16. POOH w/ 5" DP. 17. ND Drilling spool, NU BOPE and test to 250/4500 psi - Notify AOGCC 48 hours in advance of test. • Ensure integrity of the liner and the liner top has been verified by a pressure' v " test prior to performing this step 18. Close blind rams and combo pressure test the Drilling Liner and the Surface Casing to 3500 psi for 30 minutes -- chart and send to ODE. 19. MU 8 -1/2" RSS, MWD /LWD on 5" DP. RU MPD trip nipple. • 20. RIH and cleanout casing to landing collar. 21. Drill through drilling liner shoe + 20' of new hole and perform LOT to a minimum of 12.5 ppg, however, should the test reach a 14.0 ppg EMW FIT without breaking over, we do not need to Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 7 of 10 take the test to LOT. 22. RD MPD trip nipple and RU bearing assembly. Drill 8 -1/2" Intermediate 2 to casing point. 23. Circulate and condition the well to run 7" intermediate casing. Displace the well over to -12.5 • ppg for shale stability. RD the MPD bearing assembly and RU MPD trip nipple. POH. 24. Change one set of pipe rams to 7" and test BOPE as required. 25. Run and cement the 7" intermediate casing. 26. Bump the plug and bring the pressure up to 4500 psi - chart and hold for 30 minute pressure test. Send chart to ODE. Release pressure and ensure floats are holding. 27. LD 5" DP 28. Change pipe rams to 4" and test BOPE to 250/4500 psi - Notify AOGCC 48 hours in advance of test. 29. PU 4" DP as needed to TD the Production hole section. 30. MU 6 -1/8" RSS, MWD /LWD drilling assembly on 4" DP. RU MPD trip nipple. RIH and cleanout to landing collar. RD MPD trip nipple and RU bearing assembly. 31. Drill through Intermediate 2 shoe, rathole + 20' of new hole and perform FIT to 12.5 ppg. 32. Displace to drill -in -fluid for production lateral. 33. Drill 6 -1/8" lateral production hole to TD. • 34. Circulate and condition the hole to run liner. 35. Change one set of pipe rams to 4 -1/2" and test BOPE as required. 36. RIH w/ 4 -1/2" solid w/ pert pups production liner from 150' inside the intermediate shoe to TD. 37. Release from the liner and set the liner top packer. Displace the well over to 10.2 ppg Brine and POOH. 38. MU ESP completion and RIH. 39. Land the tubing and RILDS. Install TWC. 40. ND BOPE, NU tree and test to 5,000 psi. 41. Pull TWC and reverse circulate corrosion inhibited brine and diesel to freeze protect the well to -2000' TVD and allow to u -tube. 42. Drop ball and rod and allow to seat. Pressure test the tubing to 3,500 psi - chart and hold for 30 minutes. Bleed off pressure and then pressure test the annulus to 3,500 psi - chart and hold for 30 minutes. Bleed off pressure. 43. RDMO to next well. Post -Rig Work 1. RU Slickline and pull the ball and rod. Pull the RHC -m plug. 2. RD Slickline. Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 8 of 10 Casing Shoe Leak Off Test Procedure: 1. After testing BOPE, pick up the drilling assembly and RIH to the float collar. Circulate to consistent mud weight and rheology. 2. Shut in with the pipe rams and test the casing to the required test pressure. Record the volume of mud required and the corresponding pressures in 1 /4 bbl increments. When the design pressure is reached shut in the well and record the shut in pressure for 30 minutes. 3. Bleed off pressure while taking returns to a calibrated tank and record volume recovered. 4. Drill out the shoe track. Drill 20 ft of new hole and circulate the hole clean with consistent mud weight in /out. Pull up into the casing shoe. 5. Perform a Leak Off Test (or Formation Integrity Test): • Calculate the required test pressure to reach leak off (or formation integrity test limit) with the actual mud weight and the estimated fracture EMW. • Plot the casing test data and the calculated leak off on appropriate scale coordinate paper. As a guide, use the data from the casing test to determine the approximate volume of mud required to reach the calculated LOT /FIT. • Shut the well in. R/U the test pump. • Bring the pump on line at 0.25 — 0.50 bpm. Maintain a constant rate. • Record the pressure for every 1 4 of a bbl pumped. • Continue pumping until the pressure vs. volume curve breaks over indicating leak off. Note: For FIT, do not take to leak off • Discontinue pumping and shut in the well. Record the shut in pressure in 1 minute increments for 10 minutes or until pressure shows stabilization. • Bleed off the pressure and record the volume of mud recovered. • Plot the data to determine the LOT /FIT pressure at the shoe as EMW. • Submit the test results to the Pioneer drilling engineer for distribution as required. Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 9 of 10 • ODSN -21 Drilling Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE Well Control • Prior to drilling into the Kuparuk, hold a pre- reservoir meeting to outline heightened awareness for kick detection and lost circulation. o Following the Kuparuk penetration, pick up off bottom, shut off the pumps and perform a flow check to verify there isn't any overpressure. Hydrates and Shallow gas • No hydrates are expected in this area. • Lost Circulation /Breathing /Formation Stability /Stuck Pipe Events • Breathing may be seen while drilling the Hue shale. Minimizing swab and surge on the formation is critical to reducing the impact of breathing in the wellbore. Breathing was seen in the ODSN -40 well, but only after substantial time in trying to solve the lost circulation problems in the fault seen in and below the Torok Sands. • Lost Circulation was seen in drilling the ODSN -36 across this same interval. Review the DOB2C pill procedure prior to penetrating the Kuparuk. Follow the Lost Circulation Decision Tree and combat losses accordingly • During the attempt to retrieve a fish from the ODSK -33 well, an un- centralized BHA got stuck from differential sticking across the Torok due to the increase in mud weight needed to hold back the shales below. Differential sticking indications were not noted with the drilling BHA and drill pipe. In any event, keep the pipe moving and avoid allowing the pipe to remain stationary any longer than necessary to minimize the chances of differential sticking. • There is a small section of formation above the Top of the HRZ that is volcanic in nature • (TUFFS) and can either have "glassy" material, swelling clays or both while drilling, which produced a pack off on ODSK -33 and ODSN -45 - close attention while drilling this interval is advised. Kick Tolerance /Integrity Testing Kick Tolerance / Integrity Testing Summary Table Casing set / Maximum Mud Weight Exp Pore Min LOT / FIT Interval Influx Volume Press 11-3/4" Surface / 368 bbls 10 ppg 2363 12.5 ppg (LOT ) 10 -5/8" x 11 -3/4" 9 -5/8" Drilling Liner / Infinite 10.0 ppg 3154 12.5 ppg (LOT), 8 -1/2" (12.5 EMW w /MPD) 14.0 ppg Max 7" Intermediate / Infinite 8.6 ppg 3264 12.5 ppg (FIT) 6 -1/8" (10.2 EMW w /MPD) 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 Hydrogen Sulfide • The Oooguruk Drill Site is not designated as an H site, however Standard Operating Procedures for H precautions should be followed at all times. Faults • Sub seismic faults with throws <25' may be encountered. Losses may be associated with these faults. CONSULT THE ODS DATA SHEET FOR ADDITIONAL INFORMATION (still in development) Pioneer Natural Resources Last Revised: February 5, 2009 ODSN -21 Permit To Drill Page 10 of 10 ODSN -21 Prction Well Proposed•ompletion Well Head: 11 -3/4 ", 5K, VetcoGray Tree: 2 -7/8 ", 5K, Horizontal Vent Valves Control Line 16" Conductor , 158' MDrkb / 158' TVDrkb 2 -7/8" ScSSSV, 2.313" ID @ -755 MD / 755 TVD 2 -7/8 ", 9.3# L -80 IBT -M ► $ " �(1/4 " 4 Weatherford Liner Top Packer and Tieback 3267' MDrkb OM 11 -3/4 ", 60# L -80 Hyd 521, 10.772" ID _J 2 -7/8" GLM #2 @ 4250' MDrkb / 3330' TVDrkb 3417' MDrkb / 3000' TVDrkb 2 7/8" X Nipple, 2.313" ID @ 4750' MD 7" x 2 -7/8" Packer @ -4800' MDrkb / 3750' TVDrkb 2 7/8" X Nipple, 2.313" ID w RHC -M Profile @ 4850' MD J Estimated Top of Cement @ 6500' MD, 2 -7/8" GLM #1 @ 7900' MDrkb / 5528' TVDrkb -500' MD above Top Torok ESP Cable 9 -5/8 ", 40# L -80 Hydril 521, 8.835" ID II 7487' MDrkb / 5285' TVDrkb 2 7/8" XN Nipple, 2.205" ID Nogo 9200' MD / 6104' TVD 000 ADV @ 9250' MD / 6117' TVD ESP at @ -9300' MDrkb / 6130' TVD End of Assembly -9382' MD Estimated Top of Cement @ 8400' MD, -500' MD above Top of Kuparuk r 7" Weatherford Liner Top Packer and Tieback 111:`_ 9382' MDrkb 4 -1/2" solid liner w /perforated pups 7", 26# L -80 BTC -M, 6.276" ID 12.6# L -80 IBT -M 9532' MDrkb / 6190' TVDrkb - 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 17617' MDrkb / 6406' TVDrkb 0 Date: Revision By: Comments 1 1 \ G R 2/7/2010 jdf Proposed Completion `V L ODSN -21 Producer NAT.RALRESOORCESUSO Well Schematic Draft • Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN -21 - Slot ODS -21 ODSN -21 PS13 Plan: ODSN -21 PS13 wp04 Standard Proposal Report 05 February, 2010 HALLIBURTON Sperry Drilling Services PIONEER WELL DETAILS: ODSN -21 SURVEY PROGRAM REFERENCE INFORMATION Ground Level: 13.5 Date: 2010-02-05T00:00:00 Validated: Yes Version: Coordinate (N/E) Reference: Well ODSN -21 - Slot ODS -21. True North N A L U i"iA L 7 i , SOU (i( i 2 +N/8 +E/ -W Northing Easting Latittude Longitude Slot Vertical d Dee Reference: 42.T + 13.5 @ 56.25 (Nabors 19AC) g g gr Measured Depth Reference: 42.7 + 13.5 @ 56.25 (Nabors 19AC) 0.0 0.0 6031028.53 469798.62 70 29' 45.029N I50° 14' 49.036 W ODS-21 Depth From Depth To Survey /Plan Tool Calculation Method: Minimum Curvature 42.7 1900.0 ODSN -21 PS13 wp04 SR- Gyro-SS 1900.0 17616.7 ODSN -21 PS13 wp04 MWD +IFR2 +MS +sag CASING DETAILS TVD MD Name Size WELLBORE TARGET DETAILS (MAP CO- ORDINATES) SECTION DETAILS 3000.0 3416.9 11 3/4" 11.750 Name TVD +N / -S +E / -W Northing Easting Shape Sec MD Inc Azi ND +N/ +E / - DLeg TFace VSec Target 5285.0 7487.5 9 5/8" 9.625 PS13 v2 T1 6187.2 - 3437.8 - 3922.1 6027607.00 465863.00 Point 1 42.7 0.00 0.00 42.7 0.0 0.0 0.00 0.00 0.0 6190.0 9532.1 7" 7.000 PS13 v3 T6 6271.2 - 5855.6 - 2319.1 6025183.00 467456.00 Point 2 500.0 0.00 0.00 500.0 0.0 0.0 0.00 0.00 0.0 6406.2 17616.7 4 1/2" 4.500 PS13 v3 T5 6290.2 - 5003.9 - 2917.6 6026037.00 466861.00 Point 3 800.0 3.00 275.00 799.9 0.7 - 7.8 1.00 275.00 - 1.2 -1%1111-1 PS13 V3 T10 6296.2 - 8596.2 - 435.7 6022435.00 469328.00 Point 4 1000.0 7.00 275.00 999.1 2.2 - 25.2 2.00 0.00 - 3.7 COMPANY DETAILS: Well Planning - Pioneer - Oooguruk PS13 v3 T3 6296.2 - 4155.1 - 3486.1 6026888.00 466296.00 Point 5 1666.3 16.99 275.00 1650.0 14.3 - 163.0 1.50 0.00 - 24.1 PS13 v3 T4 6296.2 -4587.0 - 3197.3 6026455.00 466583.00 Point 6 1770.9 16.99 275.00 1750.0 16.9 -193.4 0.00 0.00 -28.6 Calculation Method: Minimum Curvature PS13 v3 T7 6325.2 -6656.5 - 1789.3 6024380.03 467982.47 Point 7 1929.9 21.77 275.00 1900.0 21.5 -246.0 3.00 0.00 -36.3 Error System: ISCWSA PS13 v3 T9 6336.2 - 8019.8 - 832.1 6023013.00 468934.00 Point 8 3204.7 56.30 246.13 2882.3 -180.0 -994.4 3.00 - 40.47 119.8 Scan Method Tray. Cylinder North PS13 v3 T8 6356.2 - 7401.4 - 1256.7 6023633.00 468512.00 Point 9 6715.0 56.30 246.13 4829.7 - 1362.1 - 3665.0 • 0.00 0.00 1138.6 Error Surface: Elliptical Conic PS13 v3 T11 6406.2 - 10122.2 611.6 6020905.00 470369.00 Point 10 9221.1 75.00 148.71 6109.6 - 3190.2 -4072.6 3.50 - 106.54 2938.8 Waming Method: Rules Based 11 9521.1 75.00 148.71 6187.2 - 3437.8 - 3922.1 0.00 0.00 3195.0 PS13 v2 T1 12 9773.3 82.54 149.28 6236.3 - 3649.7 - 3794.8 3.00 4.31 3414.2 -600 FORMATION TOP DETAILS 13 10100.7 82.54 149.28 6278.8 - 3928.8 -3628.9 0.00 0.00 3702.8 - DDI = 6.91 14 10369.1 90.00 146.23 6296.2 -4155.1 - 3486.1 3.00 -22.33 3937.3 PS13 v3 T3 _ V' TVDPath TVDssPath MDPath Formation 15 10888.7 90.00 146.23 6296.2 -4587.0 - 3197.3 0.00 0.00 4385.8 PS13 t3 T4 2290.2 2234.0 23692 Top West Sak 16 10895.2 90.16 146.34 6296.2 -4592.4 - 3193.7 3.00 32.66 4391.5 0 Start Dir 1.00/100' 500.00' MD, 500.00' TVD 2920.2 2864.0 3273.0 Tuffaceous Shales 17 11254.4 90.16 146.34 6295.2 - 4891.4 - 2994.6 0.00 0.00 4701.9 - - ' 4261.2 4205.0 5690.2 Brook 2b 18 11390.9 94.00 144.90 6290.2 -5003.9 - 2917.6 3.00 -20.47 4818.9 PS13 v3 T5 5018.2 4962.0 7042.9 Top Torok Ss 19 11590.9 94.00 144.90 6276.2 - 5167.2 - 2802.9 0.00 0.00 4988.7 - - Start Dir 2.00/100' 800.00' MD, 799.90' TVD 5275.2 5219.0 74712 Base Torok Ss 20 11723.1 90.03 144.90 6271.6 - 5275.3 - 2726.9 3.00 180.00 5101.2 600 _ - - - 5786.2 5730.0 8380.1 Top Hrz 21 12428.8 90.03 144.90 6271.2 - 5852.7 - 2321.1 0.00 0.00 5702.0 _ - _ 5865.2 5809.0 8546.6 Black 1 fault 22 12432.4 90.00 144.80 6271.2 - 5855.6 - 2319.1 3.00 - 107.53 5705.1 PS13 v3 T6 _ - - Start Dir 1.50/100' 1000.00' MD, 999.10' TVD 5909.2 5853.0 8645.9 Base Hrz 23 12568.4 86.73 147.25 6275.1 - 5968.3 - 2243.1 3.00 143.18 5822.2 - _ - - - - - - - 59562 5900.0 8758.9 Kalubik Mkr 24 13115.7 86.73 147.25 6306.3 -6427.9 - 1947.5 0.00 0.00 6298.7 - End Dir 1666.30' MD, 1650.00' TVD 6016.2 5960.0 8917.7 TopKupC 25 13194.4 86.00 145.00 6311.2 -6493.1 - 1903.7 3.00 - 108.17 6366.4 1200 6036.2 5980.0 8975.5 Base Kuparuk 26 13394.4 86.00 145.00 6325.2 -6656.5 - 1789.3 0.00 0.00 6536.5 PS13 v3 T7 C - - - - - 61412 6085.0 9343.4 BCU 27 13594.4 86.00 145.00 6339.2 -6819.9 - 1674.9 0.00 0.00 6706.5 1 - - - Start Dir 3.0/100' 1770.90' MD, 1750.00' TVD 6196.2 6140.0 9557.2 Top Nuigsut 28 13686.6 88.71 144.47 6343.4 -6895.1 - 1621.7 3.00 -11.07 6784.8 - - -- _ _ _ 29 14203.1 88.71 144.47 6355.0 - 7315.4 - 1321.6 0.00 0.00 7222.3 ° 1800 20" Start Dir 3.0/100' 13115.70' MD, 6306.30' TVD 30 14311.0 90.00 141.50 6356.2 - 7401.4 - 1256.7 3.00 -66.61 7312.2 PS13 v3 T8 End Dir 3204.70' MD, 2882.30' TVD l 31 14473.0 90.22 146.36 6355.9 - 7532.4 - 1161.3 3.00 87.44 7448.7 - End Dir 12568.40 MD,16275.10' TVD 32 14732.4 90.22 146.36 6354.9 - 7748.3 - 1017.6 0.00 0.00 7672.8 s Top West Sak ' 1 33 14861.8 94.00 145.49 6350.2 - 7855.4 - 945.2 3.00 - 12.94 7784.1 d 2400 Start Dir 3.0/100' 12428.80' MD, 6271.20' TVD 34 15061.8 94.00 145.49 6336.2 - 8019.8 -832.1 0.00 0.00 7955.0 P813 v3 T9 p 40° 35 15261.8 94.00 145.49 6322.2 - 8184.2 -719.1 0.00 0.00 8125.9 Tc Start D ir 3.5/100' 6715.00' MD, 4829.80' TVD End Dir 11723.10' MIS, 4271.80' TVD 36 15283.9 93.34 145.48 6320.8 - 8202.4 - 706.6 3.00 - 179.45 8144.8 Tuffaceous Shales 37 15651.3 93.34 145.48 6299.4 - 8504.6 -498.7 0.00 0.00 8459.0 ' Start Dir 3.0/100 11590. MDi 627.20' TVD 38 15762.6 90.00 145.54 6296.2 - 8596.2 -435.7 3.00 179.04 8554.3 PS13 t3 T10 l 1 1 l 39 15879.7 86.49 145.54 6299.8 - 8692.7 -369.5 3.00 - 180.00 8654.6 3000 11 3/4" /' End Dir 11390.90' MD, 6290.20 TVD , 40 17616.7 86.49 145.54 6406.2 - 10122.2 611.6 0.00 0.00 10140.6 PS13 v3 T11 (9 / l 1 i Start Dir 3.0/100' 11254.40' AD, 6 9 &.20' P'D E Di 13194.40' MD, 6311.20' TVD I- Project: Oooguruk Development 3600- End Dir 10895.20' KID, 096.20, VD l / _ 56 / 1 1 I Start Dir 3.0/100' 13594.40' MD, 6339.20' TVD Site: Oooguruk Drill Site / Start Dir 3.0/100' 10888.70' MD, 6296.20'"TVD Well: ODSN -21 ; 111I End Dir 13686.60' MD, 6343.40' TVD 4200- // End Dir 10369.10' MD, 6296 20' T VD 1 1 1 " t Welibore: ODSN -21 PS13 Brook 2b i Start Dir 3.0/100' 14203.10' MD, 6355.00' TVD Plan: ODSN -21 PS13 wpO4 _ Start Dir 3.0/100' 10100.90' MD, 6278.8b' TV , , / 4800 / End Dir 9773.30' MD, 6 6.30 � , End Dir 14473.00' MD, 6355.90' TVD Top Torok Ss _ _ _ l t , I t l 1 End Dir 15283.90' MD, 6320.80' TVD Start Dir 3.0/100' 9521.'10' MD, 6187.20' TVD 1 i / / ' I l , 1 I l Start Dir 3.0/100' 14732.40' MD, 6354.90' TVD Start Dir 3.0/100' 15651.30' MD, 6299.40' TVD Base Torok Ss - - - - . 5400- 9 5 End Dir 9221.10' MD, 8109.50' , 1 / / End Dir 148 MD, 6350.10' TVD - - h , - End Dir 15879.70' MD, 6299.80' TVD Top Hrz I h , I 1 / Start Dir 3.0/ 15261.80' MD, 6322.26' TVD' -' - - 6000- l Total Depth at 17616.70' MD, 6406.20' TVD 6000 Black 1 fault Base Hrz - - - , 1 i i / / / / l l t 1 - Kalubik Mkr - ,•, l ` 7" .. _ - - 4 1/2" . Base Kuparuk PS v2 Tt PS13 v3 T4 t 6600 Top Ku C t l , PS13 v3 T6 i PS13 v3 T8 PS13 v3 T10 BCU ' ODSN - 21 PS13 wp04 - PS13 v3 T3 PS13 v3 T5 PS13 v3 T71 PS13 v3 T9 PS13 v3 T11 7200 Top Nuiqsut - llliliiiiiiiiiilliil11111 1 11111111111111111111111111111111111111111111111111111 -600 0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000 6600 7200 7800 8400 9000 9600 10200 10800 1 HALLIBURTON Vertical Section at 176.54° (1500 ft/in) Sperry Drilling PIONEER, HALLIBURTON WELL DETAILS: ODSN -21 REFERENCE INFORMATION Ground Level: 13.5 Coordinate (N/E) Reference: Well ODSN -21 - Slot ODS -21, True North NATURAL RESOURCES' Sporry Drilling +N / -S +E/ -W Northing Fasting Latittude Longitude Slot Vertical (TVD) Reference: 42.7' +13.5' @56.2ft (Naborsl9AC) 0.0 0.0 6031028.53 469798.62 70° 29' 45.029 N 150°14' 49.036 W ODS Measured Depth Reference: Mini + m C .' @ 56.2ft (Nabors 19AC) Calculation Method: Minimum Curvature Project: Oooguruk Development Site: Oooguruk Drill Site SURVEY PROGRAM WELLBORE TARGET DETAILS (MAP CO- ORDINATES) Well: ODSN -21 Date: 2010- 02- 05T00:00:00 Validated: Yes Version: Name TVD +N / -S +E/ -W Northing Easting Shape Wellbore: ODSN -21 PS13 PS13 v2 T1 6187.2 - 3437.8 - 3922.1 6027607.00 465863.00 Point Depth From Depth To Survey /Plan Tool PS13 J3 T6 6271.2 - 5855.6 - 2319.1 6025183.00 467456.00 Point Plan: ODSN -21 PS13 wp04 42.7 1900.0 ODSN -21 PS13 wp04 SR- Gyro -SS PS13 v3 T5 6290.2 - 5003.9 - 2917.6 6026037.00 466861.00 Point 1900.0 17616.7 ODSN -21 PS13 wp04 MW D +IFR2 +MS +sag PS13 v3 T10 6296.2 - 8596.2 -435.7 6022435.00 469328.00 Point PS13 J3 T3 6296.2 - 4155.1 - 3486.1 6026888.00 466296.00 Point COMPANY DETAILS: Well Planning - Pioneer - Ooogmdc PS13 J3 T4 6296.2 -4587.0 - 3197.3 6026455.00 466583.00 Point PS13 V3 17 6325.2 - 6656.5 - 1789.3 6024380.03 467982.47 Point Calculation Method: Minimum Curvature PS13 v3 T9 6336.2 - 8019.8 -832.1 6023013.00 468934.00 Point Error System 1 SCWSA Start Dir L00 /100' 500.00' MD, 500.00' TVD PS13 v3 T8 6356.2 - 7401.4 - 1256.7 6023633.00 468512.00 Point Scan Method: Tray. Cylinder North _ _ _ . PS13 J3 T11 6406.2 - 10122.2 611.6 6020905.00 470369.00 Point Error Surface: Elliptical Conic 11 3/4" _ , _ _ _ Warning Method: Rules Based N , ' - - - _ _ Start Dir 2.00/100' 800.00' MD, 799.90' TVD '''° ° SECTION DETAILS Q o Start Dir L50 /100' 1000.00' MD, 999.10' TVD - e o ce -800- $ End Dir.1666.30' MD, 1650.00 TVD Sec 42.7 0.00 0.00 42.7 + O 0 +E / - 0.0 0 .0 0 T 0 VS 0. Target 1 - $o Start Di 3.0/100 MD, 1750 TVD 2 500.0 0.00 0.00 500.0 0.0 0.0 0.00 0.00 0.0 • - :7 n ` ■ 3 800.0 3.00 275.00 799.9 0.7 - 7.8 1.00 275.00 - 1.2 - - _g _ 4 1000.0 7.00 275.00 999.1 2.2 -25.2 2.00 0.00 -3.7 - 1600 - l p - - - _ _ - - _ End Dir 3204.70' MD, 2882.30' TVD 5 1666.3 16.99 275.00 1650.0 14.3 -163.0 1.50 0.00 -24.1 - � b - - - 6 1770.9 16.99 275.00 1750.0 16.9 -193.4 0.00 0.00 -28.6 - 9 5/8" Start Dir 3.5/ 100' 6715.00' MD, 4829.80' TVD 7 1929.9 21.77 275.00 1900.0 21.5 -246.0 3.00 0.00 -36.3 _ '500 End Dir 9221.10 MD, 6109.50' TVD 8 3204.7 56.30 246.13 2882.3 -180.0 -994.4 3.00 -40.47 119.8 - 2400 - 9 6715.0 56.30 246.13 4829.7 - 1362.1 - 3665.0 0.00 0.00 1138.6 Start Du 3.0/100' 9521.10' MU, 6187.20' TVD 10 9221.1 75.00 148.71 6109.6 - 3190.2 - 4072.6 3.50 - 106.54 2938.8 - 11 9521.1 75,00 148.71 6187.2 0 12 9773.3 82.54 149.28 6236.3 - 3649.7 3794.8 3.00 4.322.1 0.00 0.00 .30 3195.0 PS13 J2 T1 - - 6 End Dir 9773.30' MD, 6236.30' TVD 13 10100.7 82.54 149.28 6278.8 - 3928.8 - 3628.9 0.00 0.00 3702.8 - 3200 - - - Start Dir 3.0/100' 10100.70' MD, 6278.80' TVD 14 10369.1 90.00 146.23 6296.2 -4155.1 - 3486.1 3.00 -22.33 3937.3 PS13 60 T3 _ I PS13 v2 T'II- - - - , = � - - - - - 15 10888.7 90.00 146.23 6296.2 -4587.0 - 3197.3 0.00 0.00 4385.8 PS13 v3 T4 1 - - End Dir 10369.10' MD, 6296.20' TVD 16 10895.2 90.16 146.34 6296.2 - 4592.4 - 3193.7 3.00 32.66 4391.5 - 7 - - - - Start Dir 3.0/100' 10888.70' MD, 6296.20' TVD 17 11254.4 90.16 146.34 6295.2 - 1891.4 - 2994.6 0.00 0.00 4701.9 -4000- 1 - 18 11390.9 94.00 144.90 6290.2 - 5003.9 - 2917.6 3.00 -20.47 4818.9 PS13 v3 T5 C - - - End Dir 10895.20' MD, 6296.20' TVD 19 11590.9 94.00 144.90 6276.2 - 5167.2 - 2802.9 0.00 0.00 4988.7 - ,.= 1 _ - ' ' St Di 3 11254 MD, 6295.20' TVD 20 11723.1 90.03 144.90 6271.6 - 5275.3 - 2726.9 3.00 180.00 5101.2 - I P513 v3 T'� - 21 12428.8 90.03 144.90 6271.2 - 5852.7 - 2321.1 0.00 0.00 5702.0 p - _ - - I _ - - - End Dir 11390.90' MD, 6290.20' TVD 0 4800 22 12432.4 90.00 144.80 6271.2 - 5855.6 - 2319.1 3.00 - 107.53 5705.1 PS13 JS T6 _ N _ - - Start Dir - e 3.0/100' 11590.90 MD , 6276 TVD 23 12568.4 86.73 147.25 6275.1 - 5968.3 - 2243.1 3.00 143.18 5822.2 ( PS73 v3 TT41 / - - I End Dir 11723.10' MD, 6271.60' TVD 25 13194.4 86.00 145.00 6311.2 - 6493.1 - 1903.7 3.00 - 108.17 6366.4 PS13 v3 26 13394.4 86.00 145.00 6325.2 - 6656.5 - 1789.3 0.00 0.00 6536.5 PS13 v3 T7 I ' I Start Dir 3.0/100' 12428.80' MD, 6271.20' TVD -5600- 27 13594.4 86.00 145.00 6339.2 - 6819.9 - 1674.9 0.00 0.00 6706.5 0 - Z - _ E n d Da 12568.40' MD, 6275 TVD 28 13686.6 88.71 144.47 6343.4 - 6895.1 - 1621.7 3.00 -11.07 6784.8 _ 1 29 14203.1 88.71 144.47 6355.0 - 7315.4 - 1321.6 0.00 0.00 7222.3 . - . _ I PS13 v3 T( Start Dir 3.0/104 13115.70' MD, 6306.30' TVD 30 14311.0 90.00 141.50 6356.2 - 7401.4 - 1256.7 3.00 -66.61 7312.2 PS13 v3 T8 - 6400 - - 31 14473.0 90.22 146.36 6355.9 - 7532.4 - 1161.3 3.00 87.44 7448.7 0 f - End Dir 13194.40' MD, 6311.20' TVD 32 14732.4 90.22 146.36 6354.9 - 7748.3 - 1017.6 0.00 0.00 7672.8 112 - Start Dir 3.0/100' 13594.40' MD, 6339.20' TVD 33 14861.8 94.00 145.49 6350.2 - 7855.4 -945.2 3.00 -12.94 7784.1 I PS13 v3 T1I i _ _ _ _ _ _ 34 15061.8 94.00 145.49 6336.2 - 8019.8 -832.1 0.00 0.00 7955.0 PS13 v3 T9 -7200- 1 End Dir 13686.60' MD, 6343.40' TVD 35 15261.8 94.00 145.49 6322.2 - 8184.2 -719.1 0.00 0.00 8125.9 _ _ _ _ _ 36 15283.9 93.34 145.48 6320.8 - 8202.4 -706.6 3.00 - 179.45 8144.8 _ _ _ Start Dir 3.0/100'14203.10' MD, 6355.00' TVD 37 15651.3 93.34 145.48 6299.4 - 8504.6 -498.7 0.00 0.00 8459.0 - LS13 v3 T1� 1 - - - - - _ 38 15762.6 90.00 145.54 6296.2 - 8596.2 -435.7 3.00 179.04 8554.3 PS13 v3 T10 r_ - - - _ _End Dir 14473.00' MD, 6355.90' TVD 39 15879.7 86.49 145.54 6299.8 - 8692.7 -369.5 3.00 - 180.00 8654.6 -8000- - - ' - - - - - - 40 17616.7 86.49 145.54 6406.2 - 10122.2 611.6 0.00 0.00 10140.6 PS13 v3 T11 - IP513 v3 T '9I" / - 1 , - ` - - Start Dir 3' - 0/100'1473240' MD, 6354.90' TVD I _ _ - / ' - �Sd-D r 14861.80' MD, 6350.10' TVD -8800- 1 - _ - Start Dic3.0 /100' 15261.80' MD, 6322.20' TVD - `PS13 v3 T101 - DDI =6.91 - End Dir15283.90' MD, 6320.80' TVD - 9600 - Start Dir 36/400' 15651.30' MD, 6299.40' TVD CASING DETAILS _ s I End Dir 15879.70' MD, 6299.80' TVD TVD MD Name Size _ _ S _ _ _ _ _ 3000.0 3416.9 11 3/4" 11.750 Il ' Total Depth at 17616.70' MD, 6406.20' TVD 5285.0 7487.5 9 5/8" 9.625 - 10400 IPS13v3 I 41 /2" 6190.0 9532.1 7" 7.000 - 6406.217616.7 41/2" 4.500 - ODSN -21 PS13 wp04 - I 11 1 1 I 1 1 I 1 I 1 1 1 1 I 1 1 1 1 I 1 1 I 1 I 1 1 1 1 I 1 1 1 1 I 1 1 1 1 I 1 1 1 1 I 1 1 1 1 I 1 1 1 1 I 1 1 1 1 I I 1 1 1 I I 1 1 1 I 1 1 1 1 I 1 1 1 1 1 I 1 1 1 I I 1 I 1 I 1 1 1 1 I 1 I! 1 I 1 1 1 1 I 1 1 1 1 I 1 I 1 1 I 1 1 1 1 -5600 - 4800 -4000 - 3200 -2400 -1600 -800 0 800 1600 2400 3200 4000 4800 5600 6400 7200 8000 8800 9600 10400 11200 12000 12800 West( - )/East(+) (2000 ft/in) • • Halliburton Company HALL1BURTON Standard Proposal Report Database: .Pioneer Alaska Local Co- ordinate Reference: Well ODSN -21 - Slot ODS -21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5 @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5 @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN -21 Survey Calculation Method: Minimum Curvature Wellborn: ODSN -21 PS13 Design: ODSN -21 PS13 wp04 Project Oooguruk Development • Map System: US State Plane 1927 (Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927 (NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Site Oooguruk Drill Site Site Position: Northing: 6,031,151.32ft Latitude: 70° 29' 46.242 N From: Map Easting: 469,920.45ft Longitude: 150° 14' 45.465 W Position Uncertainty: 0.0 ft Slot Radius: in Grid Convergence: -0.23 ? Well ODSN -21 - Slot ODS -21 Well Position +N/-S 0.0 ft Northing: 6,031,028.53 ft Latitude: 70° 29' 45.029 N +E / -W 0.0 ft Easting: 469,798.62 ft Longitude: 150° 14' 49.036 W Position Uncertainty 0.0 ft Wellhead Elevation: ft Ground Level: 13.5ft Welibore ODSN -21 PS13 Magnetics Model Name Sample Date 1) ecli t 4's Dip Field Strength 4 ' . ', (?) ' k;.'u (?) (nT) IGRF200510 12/31 /2009 21.99 80.81 57,759 Design ODSN -21 PS13 wp04 — . Audit Notes: Version: Phase: PLAN Tie On Depth: 42.7 Vertical Section: Depth From (W +Nl-S ,;;;' .- +E/ W Direction : (ft) =P� <`£` : �:r: ,. 0) pit (ft) ( ?) 42.7 0.0 0.0 176.54 2/5/2010 1:45:59PM Page 2 COMPASS 2003.16 Build 428 • • Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Welibore: ODSN - 21 PS13 Design: ODSN - 21 PS13 wp04 Plan Sections Measured Vertical TVD Dogleg BjuEl *` Turn Depth Inclination Azimuth Depth System +N/-S +Et -W Rate Rate Tool Face (ft) ( ?) ( ?) (ft) ft (ft) (ft) ( ? /100ft) .:'•:,' ?t1 (MOM) ( ?) 42.7 0.00 0.00 42.7 -13.5 0.0 0.0 0.00 0.00 0.00 0.00 500.0 0.00 0.00 500.0 443.8 0.0 0.0 0.00 0.00 0.00 0.00 800.0 3.00 275.00 799.9 743.7 0.7 -7.8 1.00 1.00 0.00 275.00 1,000.0 7.00 275.00 999.1 9 2.2 -25.2 2.00 2.00 0.00 0.00 1,666.3 16.99 275.00 1,650.0 1,593.8 14.3 -163.0 1.50 1.50 0.00 0.00 1,770.9 16.99 275.00 1,750.0 1,693.8 16.9 -193.4 0.00 0.00 0.00 0.00 1,929.9 21.77 275.00 1,900.0 1,843.8 21.5 -246.0 3.00 3.00 0.00 0.00 3,204.7 56.30 246.13 2,882.3 2,826.1 -180.0 -994.4 3.00 2.71 -2.27 -40.47 6,715.0 56.30 246.13 4,829.7 4,773.5 - 1,362.1 - 3,665.0 0.00 0.00 0.00 0.00 9,221.1 75.00 148.71 6,109.6 6,053.4 - 3,190.2 - 4,072.6 3.50 0.75 -3.89 - 106.54 9,521.1 75.00 148.71 6,187.2 6,131.0 - 3,437.8 - 3,922.1 0.00 0.00 0.00 0.00 9,773.3 82.54 149.28 6,236.3 6,180.1 - 3,649.7 - 3,794.8 3.00 2.99 0.23 4.31 10,100.7 82.54 149.28 6,278.8 6,222.6 - 3,928.8 - 3,628.9 0.00 0.00 0.00 0.00 10,369.1 90.00 146.23 6,296.2 6,240.0 - 4,155.1 - 3,486.1 3.00 2.78 -1.14 -22.33 10,888.7 90.00 146.23 6,296.2 6,240.0 - 4,587.0 - 3,197.3 0.00 0.00 0.00 0.00 10,895.2 90.16 146.34 6,296.2 6,240.0 - 4,592.4 - 3,193.7 3.00 2.53 1.62 32.66 11,254.4 90.16 146.34 6,295.2 6,239.0 - 4,891.4 - 2,994.6 0.00 0.00 0.00 0.00 11,390.9 94.00 144.90 6,290.2 6,234.0 - 5,003.9 - 2,917.6 3.00 2.81 -1.05 -20.47 11,590.9 94.00 144.90 6,276.2 6,220.0 - 5,167.2 - 2,802.9 0.00 0.00 0.00 0.00 11,723.1 90.03 144.90 6,271.6 6,215.4 - 5,275.3 - 2,726.9 3.00 -3.00 0.00 180.00 12,428.8 90.03 144.90 6,271.2 6,215.0 - 5,852.7 - 2,321.1 0.00 0.00 0.00 0.00 12,432.4 90.00 144.80 6,271.2 6,215.0 - 5,855.6 - 2,319.1 3.00 -0.90 -2.86 - 107.53 12,568.4 86.73 147.25 6,275.1 6,218.9 - 5,968.3 - 2,243.1 3.00 -2.40 1.80 143.18 13,115.7 86.73 147.25 6,306.3 6,250.1 - 6,427.9 - 1,947.5 0.00 0.00 0.00 0.00 13,194.4 86.00 145.00 6,311.2 6,255.0 - 6,493.1 - 1,903.7 3.00 -0.93 -2.86 - 108.17 13,394.4 86.00 145.00 6,325.2 6,269.0 - 6,656.5 - 1,789.3 0.00 0.00 0.00 0.00 13,594.4 86.00 145.00 6,339.2 6,283.0 - 6,819.9 - 1,674.9 0.00 0.00 0.00 0.00 13,686.6 88.71 144.47 6,343.4 6,287.2 - 6,895.1 - 1,621.7 3.00 2.94 -0.58 -11.07 14,203.1 88.71 144.47 6,355.0 6,298.8 - 7,315.4 - 1,321.6 0.00 0.00 0.00 0.00 14,311.0 90.00 141.50 6,356.2 6,300.0 - 7,401.4 - 1,256.7 3.00 1.19 -2.75 -66.61 14,473.0 90.22 146.36 6,355.9 6,299.7 - 7,532.4 - 1,161.3 3.00 0.13 3.00 87.44 14,732.4 90.22 146.36 6,354.9 6,298.7 - 7,748.3 - 1,017.6 0.00 0.00 0.00 0.00 14,861.8 94.00 145.49 6,350.2 6,294.0 - 7,855.4 -945.2 3.00 2.92 -0.67 -12.94 15,061.8 94.00 145.49 6,336.2 6,280.0 - 8,019.8 -832.1 0.00 0.00 0.00 0.00 15,261.8 94.00 145.49 6,322.2 6,266.0 - 8,184.2 -719.1 0.00 0.00 0.00 0.00 15,283.9 93.34 145.48 6,320.8 6,264.6 - 8,202.4 -706.6 3.00 -2.99 -0.03 - 179.45 15,651.3 93.34 145.48 6,299.4 6,243.2 - 8,504.6 -498.7 0.00 0.00 0.00 0.00 15,762.6 90.00 145.54 6,296.2 6,240.0 - 8,596.2 -435.7 3.00 -3.00 0.05 179.04 15,879.7 86.49 145.54 6,299.8 6,243.6 - 8,692.7 -369.5 3.00 -3.00 0.00 - 180.00 17,616.7 86.49 145.54 6,406.2 6,350.0 - 10,122.2 611.6 0.00 0.00 0.00 0.00 2/5/2010 1:45:59PM Page 3 COMPASS 2003.16 Build 428 • Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co- ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Wellbore: ODSN - 21 PS13 Design: ODSN - 21 PS13 wp04 Planned Survey Measured Vertical Map * '' ; 4, Depth Inclination Azimuth Depth TVDss +N /-S +E/-W Northing DLS • Vert Section (ft) ( ?) ( ?) (ft) ft (ft) (ft) (ft) :tea` ft) . " _. -13.50 42.7 0.00 0.00 42.7 -13.5 0.0 0.0 6,031,028.53 • 469,798.62 • 0.00 0.00 100.0 0.00 0.00 100.0 43.8 0.0 0.0 6,031,028.53 469,798.62 0.00 0.00 200.0 0.00 0.00 200.0 143.8 0.0 0.0 6,031,028.53 469,798.62 0.00 0.00 300.0 0.00 0.00 300.0 243.8 0.0 0.0 6,031,028.53 469,798.62 0.00 0.00 400.0 0.00 0.00 400.0 343.8 0.0 0.0 6,031,028.53 469,798.62 0.00 0.00 • 500.0 0.00 0.00 500.0 443.8 0.0 0.0 6,031,028.53 469,798.62 0.00 0.00 Start Dir 1.00/100' 500.00' MD, 500.00' TVD 600.0 1.00 275.00 600.0 543.8 0.1 -0.9 6,031,028.61 469,797.75 1.00 -0.13 700.0 2.00 275.00 700.0 643.8 0.3 -3.5 6,031,028.85 469,795.14 1.00 -0.51 800.0 3.00 275.00 799.9 743.7 0.7 -7.8 6,031,029.25 469,790.80 1.00 -1.15 Start Dir 2.001100' 800.00' MD, 799.90' TVD 900.0 5.00 275.00 899.6 843.4 1.3 -14.8 6,031,029.88 469,783.85 2.00 -2.18 1,000.0 7.00 275.00 999.1 942.9 2.2 -25.2 6,031,030.84 469,773.45 2.00 -3.72 Start Dir 1.50/100' 1000.00' MD, 999.10' TVD 1,100.0 8.50 275.00 1,098.1 1,041.9 3.4 -38.6 6,031,032.07 469,760.02 1.50 -5.70 1,200.0 10.00 275.00 1,196.8 1,140.6 4.8 -54.6 6,031,033.53 469,744.01 1.50 -8.07 1,300.0 11.50 275.00 1,295.1 1,238.9 6.4 -73.2 6,031,035.23 469,725.44 1.50 -10.81 1,400.0 13.00 275.00 1,392.8 1,336.6 8.3 -94.3 6,031,037.17 469,704.32 1.50 -13.93 1,500.0 14.50 275.00 1,489.9 1,433.7 10.3 -118.0 6,031,039.34 469,680.65 1.50 -17.42 1,600.0 16.00 275.00 1,586.4 1,5302 12.6 -144.2 6,031,041.73 469,654.46 1.50 -21.29 1,666.3 16.99 275.00 1,650.0 1,593.8 14.3 -163.0 6,031,043.45 469,635.71 1.50 -24.06 End Dir 1666.30' MD, 1650.00' TVD 1,700.0 16.99 275.00 1,682.2 1,626.0 15.1 -172.8 6,031,044.35 469,625.90 0.00 -25.51 1,770.9 16.99 275.00 1,750.0 1,693.8 16.9 -193.4 6,031,046.24 469,605.27 0.00 -28.56 Start Dir 3.0/100' 1770.90' MD, 1750.00' TVD 1,800.0 17.87 275.00 1,777.8 1,721.6 17.7 -202.1 6,031,047.03 469,596.59 3.00 -29.84 1,900.0 20.87 275.00 1,872.1 1,815.9 20.6 -235.2 6,031,050.06 469,563.57 3.00 -34.72 1,929.9 21.77 275.00 1,900.0 1,843.8 21.5 -246.0 6,031,051.05 469,552.73 3.00 -36.32 2,000.0 23.40 271.56 1,964.7 1,908.5 23.0 -272.9 6,031,052.67 469,525.89 3.00 -39.45 2,100.0 25.85 267.39 2,055.6 1,999.4 22.6 -314.5 6,031,052.39 469,484.25 3.00 -41.51 2,200.0 28.40 263.91 2,144.6 2,088.4 19.1 -359.9 6,031,049.06 469,438.81 3.00 -40.74 2,300.0 31.02 260.96 2,231.4 2,175.2 12.5 -409.0 6,031,042.69 469,389.69 3.00 -37.14 2,369.2 32.87 259.18 2,290.2 2,234.0 6.2 -445.1 6,031,036.51 469,353.59 3.00 -33.00 Top West Sak 2,400.0 33.70 258.44 2,315.9 2,259.7 2.9 -461.7 6,031,033.30 469,337.02 3.00 -30.73 2,500.0 36.42 256.25 2,397.8 2,341.6 -9.7 -517.7 6,031,020.91 469,280.95 3.00 -21.51 2,600.0 39.18 254.32 2,476.8 2,420.6 -25.3 -576.9 6,031,005.55 469,221.63 3.00 -9.51 2,700.0 41.97 252.61 2,552.7 2,496.5 -43.9 -639.3 6,030,987.28 469,159.23 3.00 5.22 2,800.0 44.78 251.08 2,625.4 2,569.2 -65.3 -704.5 6,030,966.13 469,093.92 3.00 22.66 2,900.0 47.60 249.69 2,694.6 2,638.4 -89.5 -772.5 6,030,942.17 469,025.87 3.00 42.76 3,000.0 50.45 248.43 2,760.2 2,704.0 -116.5 -843.0 6,030,915.46 468,955.27 3.00 65.46 3,100.0 53.30 247.26 2,821.9 2,765.7 -146.2 -915.8 6,030,886.08 468,882.32 3.00 90.69 3,200.0 56.17 246.17 2,879.7 2,823.5 -178.5 -990.8 6,030,854.10 468,807.21 3.00 118.39 3,204.7 56.30 246.13 2,882.3 2,826.1 -180.0 -994.4 6,030,852.54 468,803.63 2.99 119.75 End Dir 3204.70' MD, 2882.30' TVD 2/5/2010 1:45:59PM Page 4 COMPASS 2003.16 Build 428 • • Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co- ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5 @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5 © 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Welibore: ODSN - 21 PS13 Design: ODSN - 21 PS13 wp04 Planned Survey Measured Vertical Map Depth Inclination Azimuth Depth TVDss +N /-S +E/-W Northing DLS Vert Section (ft) ( ?) ( ?) (ft) ft (ft) (ft) (ft) :",-i :, >" ft) M;2,864.00 3,273.0 56.30 246.13 2,920.2 2,864.0 - 203.1 - 1,046.4 6,030,829.74 468,751.55 0.00 139.59 Tuffaceous Shales 3,300.0 56.30 246.13 2,935.2 2,879.0 -212.1 - 1,066.9 6,030,820.75 468,731.00 0.00 147.42 3,400.0 56.30 246.13 2,990.6 2,934.4 -245.8 - 1,143.0 6,030,787.38 468,654.79 0.00 176.44 3,416.9 56.30 246.13 3,000.0 2,943.8 -251.5 - 1,155.8 6,030,781.75 468,641.93 0.00 181.34 11 3/4" 3,500.0 56.30 246.13 3,046.1 2,989.9 -279.5 - 1,219.0 6,030,754.02 468,578.59 0.00 205.46 3,600.0 56.30 246.13 3,101.6 3,045.4 -313.2 - 1,295.1 6,030,720.66 468,502.38 0.00 234.49 3,700.0 56.30 246.13 3,157.1 3,100.9 -346.8 - 1,371.2 6,030,687.30 468,426.17 0.00 263.51 3,800.0 56.30 246.13 3,212.6 3,156.4 -380.5 - 1,447.3 6,030,653.94 468,349.96 0.00 292.54 3,900.0 56.30 246.13 3,268.0 3,211.8 -414.2 - 1,523.4 6,030,620.58 468,273.75 0.00 321.56 4,000.0 56.30 246.13 3,323.5 3,267.3 - 447.9 - 1,599.4 6,030,587.22 468,197.54 0.00 350.59 4,100.0 56.30 246.13 3,379.0 3,322.8 -481.5 - 1,675.5 6,030,553.85 468,121.34 0.00 379.61 4,200.0 56.30 246.13 3,434.5 3,378.3 -515.2 - 1,751.6 6,030,520.49 468,045.13 0.00 408.64 4,300.0 56.30 246.13 3,489.9 3,433.7 -548.9 - 1,827.7 6,030,487.13 467,968.92 0.00 437.66 4,400.0 56.30 246.13 3,545.4 3,489.2 -582.6 - 1,903.8 6,030,453.77 467,892.71 0.00 466.69 4,500.0 56.30 246.13 3,600.9 3,544.7 -616.2 - 1,979.8 6,030,420.41 467,816.50 0.00 495.71 4,600.0 56.30 246.13 3,656.4 3,600.2 -649.9 - 2,055.9 6,030,387.05 467,740.29 0.00 524.74 4,700.0 56.30 246.13 3,711.9 3,655.7 -683.6 - 2,132.0 6,030,353.69 467,664.09 0.00 553.76 4,800.0 56.30 246.13 3,767.3 3,711.1 -717.3 - 2,208.1 6,030,320.32 467,587.88 0.00 582.78 4,900.0 56.30 246.13 3,822.8 3,766.6 -750.9 - 2,284.1 6,030,286.96 467,511.67 0.00 611.81 5,000.0 56.30 246.13 3,878.3 3,822.1 -784.6 - 2,360.2 6,030,253.60 467,435.46 0.00 640.83 5,100.0 56.30 246.13 3,933.8 3,877.6 - 818.3 - 2,436.3 6,030,220.24 467,359.25 0.00 669.86 5,200.0 56.30 246.13 3,989.3 3,933.1 -852.0 - 2,512.4 6,030,186.88 467,283.04 0.00 698.88 5,300.0 56.30 246.13 4,044.7 3,988.5 -885.6 - 2,588.5 6,030,153.52 467,206.84 0.00 727.91 5,400.0 56.30 246.13 4,100.2 4,044.0 -919.3 - 2,664.5 6,030,120.15 467,130.63 0.00 756.93 5,500.0 56.30 246.13 4,155.7 4,099.5 -953.0 - 2,740.6 6,030,086.79 467,054.42 0.00 785.96 5,600.0 56.30 246.13 4,211.2 4,155.0 -986.6 - 2,816.7 6,030,053.43 466,978.21 0.00 814.98 5,690.2 56.30 246.13 4,261.2 4,205.0 - 1,017.0 - 2,885.3 6,030,023.35 466,909.49 0.00 841.16 Brook 2b 5,700.0 56.30 246.13 4,266.6 4,210.4 - 1,020.3 - 2,892.8 6,030,020.07 466,902.00 0.00 844.01 5,800.0 56.30 246.13 4,322.1 4,265.9 - 1,054.0 - 2,968.9 6,029,986.71 466,825.79 0.00 873.03 5,900.0 56.30 246.13 4,377.6 4,321.4 - 1,087.7 - 3,044.9 6,029,953.35 466,749.59 0.00 902.06 6,000.0 56.30 246.13 4,433.1 4,376.9 - 1,121.3 - 3,121.0 6,029,919.99 466,673.38 0.00 931.08 6,100.0 56.30 246.13 4,488.6 4,432.4 - 1,155.0 - 3,197.1 6,029,886.62 466,597.17 0.00 960.11 6,200.0 56.30 246.13 4,544.0 4,487.8 - 1,188.7 - 3,273.2 6,029,853.26 466,520.96 0.00 989.13 6,300.0 56.30 246.13 4,599.5 4,543.3 - 1,222.4 - 3,349.3 6,029,819.90 466,444.75 0.00 1,018.15 6,400.0 56.30 246.13 4,655.0 4,598.8 - 1,256.0 - 3,425.3 6,029,786.54 466,368.54 0.00 1,047.18 6,500.0 56.30 246.13 4,710.5 4,654.3 - 1,289.7 - 3,501.4 6,029,753.18 466,292.34 0.00 1,076.20 6,600.0 56.30 246.13 4,766.0 4,709.8 - 1,323.4 - 3,577.5 6,029,719.82 466,216.13 0.00 1,105.23 6,700.0 56.30 246.13 4,821.4 4,765.2 - 1,357.1 - 3,653.6 6,029,686.46 466,139.92 0.00 1,134.25 6,715.0 56.30 246.13 4,829.8 4,773.6 - 1,362.1 - 3,665.0 6,029,681.45 466,128.49 0.00 1,138.61 Start Dir 3.5/100' 6715.00' MD, 4829.80' TVD 6,800.0 55.50 242.66 4,877.4 4,821.2 - 1,392.5 - 3,728.5 6,029,651.31 466,064.91 3.50 1,165.13 6,900.0 54.69 238.51 4,934.7 4,878.5 - 1,432.8 - 3,799.9 6,029,611.35 465,993.33 3.50 1,201.00 2/5/2010 1:45:59PM Page 5 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report • Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Welibore: ODSN - 21 PS13 Design: ODSN -21 PS13 wp04 i Planned Survey Measured Vertical Map µ, Depth Inclination Azimuth Depth TVDss +N /-S +E/ -W Northing DLS Vert Section (ft) ( ?) ( ?) (ft) ft (ft) (ft) (ft) 0-Aft) ', .4,936.74 7,000.0 54.02 234.28 4,992.9 4,936.7 - 1,477.7 - 3,867.6 6,029,566.69 465,925.48 3.50 1,241.78 7,042.9 53.78 232.45 5,018.2 4,962.0 - 1,498.4 - 3,895.4 6,029,546.13 465,897.60 3.50 1,260.74 Top Torok Ss 7,100.0 53.51 229.99 5,052.1 4,995.9 - 1,527.2 - 3,931.2 6,029,517.47 465,861.63 3.50 1,287.33 7,200.0 53.15 225.65 5,111.8 5,055.6 - 1,581.0 - 3,990.6 6,029,463.89 465,802.00 3.50 1,337.47 7,300.0 52.94 221.28 5,171.9 5,115.7 - 1,639.0 - 4,045.6 6,029,406.15 465,746.82 3.50 1,392.03 7,400.0 52.90 216.89 5,232.3 5,176.1 - 1,700.9 - 4,095.9 6,029,344.46 465,696.29 3.50 1,450.78 7,471.2 52.97 213.77 5,275.2 5,219.0 - 1,747.3 - 4,128.7 6,029,298.23 465,663.24 3.50 1,495.09 Base Torok Ss 7,487.5 53.00 213.05 5,285.0 5,228.8 - 1,758.1 - 4,135.9 6,029,287.41 465,656.04 3.50 1,505.49 9 5/8" 7,500.0 53.02 212.51 5,292.5 5,236.3 - 1,766.5 - 4,141.3 6,029,279.05 465,650.61 3.50 1,513.52 7,600.0 53.30 208.15 5,352.5 5,296.3 - 1,835.5 - 4,181.7 6,029,210.17 465,609.94 3.50 1,580.02 7,700.0 53.74 203.83 5,411.9 5,355.7 - 1,907.8 - 4,216.9 6,029,138.07 465,574.44 3.50 1,650.01 7,800.0 54.33 199.57 5,470.7 5,414.5 - 1,983.0 - 4,246.8 6,029,063.02 465,544.23 3.50 1,723.25 7,900.0 55.07 195.38 5,528.5 5,472.3 - 2,060.8 - 4,271.3 6,028,985.30 465,519.44 3.50 1,799.46 8,000.0 55.95 191.27 5,585.1 5,528.9 - 2,141.0 - 4,290.2 6,028,905.21 465,500.14 3.50 1,878.35 8,100.0 56.97 187.25 5,640.4 5,584.2 - 2,223.2 - 4,303.6 6,028,823.03 465,486.43 3.50 1,959.63 8,200.0 58.11 183.32 5,694.1 5,637.9 - 2,307.2 - 4,311.4 6,028,739.09 465,478.34 3.50 2,043.00 8,300.0 59.36 179.50 5,746.0 5,689.8 - 2,392.6 - 4,313.5 6,028,653.68 465,475.90 3.50 2,128.14 8,380.1 60.45 176.51 5,786.2 5,730.0 - 2,461.9 - 4,311.1 6,028,584.39 465,478.04 3.50 2,197.45 Top Hrz 8,400.0 60.73 175.78 5,796.0 5,739.8 - 2,479.2 - 4,309.9 6,028,567.13 465,479.13 3.50 2,214.74 8,500.0 62.20 172.16 5,843.7 5,787.5 - 2,566.5 - 4,300.6 6,028,479.76 465,488.01 3.50 2,302.48 8,546.6 62.91 170.51 5,865.2 5,809.0 - 2,607.4 - 4,294.4 6,028,438.89 465,494.07 3.50 2,343.63 Black 1 fault 8,600.0 63.75 168.65 5,889.2 5,833.0 - 2,654.3 - 4,285.8 6,028,391.90 465,502.52 3.50 2,391.03 8,645.9 64.50 167.06 5,909.2 5,853.0 - 2,694.7 - 4,277.1 6,028,351.53 465,511.04 3.50 2,431.82 Base Hrz 8,700.0 65.39 165.22 5,932.1 5,875.9 - 2,742.3 - 4,265.4 6,028,303.88 465,522.59 3.50 2,480.05 8,758.9 66.40 163.25 5,956.2 5,900.0 - 2,794.1 - 4,250.7 6,028,252.05 465,537.00 3.50 2,532.61 Kalubik Mkr 8,800.0 67.11 161.89 5,972.4 5,916.2 - 2,830.0 - 4,239.4 6,028,216.02 465,548.15 3.50 2,569.22 8,900.0 68.90 158.64 6,009.9 5,953.7 - 2,917.3 - 4,208.1 6,028,128.65 465,579.11 3.50 2,658.20 8,917.7 69.22 158.08 6,016.2 5,960.0 - 2,932.7 - 4,202.0 6,028,113.24 465,585.15 3.50 2,673.92 Top Kup C 8,975.5 70.28 156.24 6,036.2 5,980.0 - 2,982.6 - 4,181.0 6,028,063.21 465,605.99 3.50 2,725.06 Base Kuparuk 9,000.0 70.74 155.47 6,044.4 5,988.2 - 3,003.7 - 4,171.5 6,028,042.10 465,615.34 3.50 2,746.66 9,100.0 72.64 152.38 6,075.8 6,019.6 - 3,089.0 - 4,129.8 6,027,956.68 465,656.73 3.50 2,834.28 9,200.0 74.58 149.34 6,104.0 6,047.8 - 3,172.7 - 4,083.1 6,027,872.73 465,703.10 3.50 2,920.71 9,221.1 75.00 148.71 6,109.5 6,053.3 - 3,190.2 - 4,072.6 6,027,855.23 465,713.51 3.50 2,938.77 End Dir 9221.10' MD, 6109.50' TVD 9,300.0 75.00 148.71 6,130.0 6,073.8 - 3,255.3 - 4,033.0 6,027,789.95 465,752.82 0.00 3,006.17 2/5/2010 1:45:59PM Page 6 COMPASS 2003.16 Build 42B • Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Welibore: ODSN -21 PS13 Design: ODSN -21 PS13 wp04 Planned Survey Measured Vertical Map Depth Inclination Azimuth Depth TVDss +N /-S +E/ -W Northing . :', DLS Vert Section (ft) ( ?) ( ?) (ft) ft (ft) (ft) (ft) ft) 6,085.00 9,343.4 75.00 148.71 6,141.2 6,085.0 - 3,291.1 - 4,011.2 6,027,754.05 465,774.44 0.00 3,043.23 BCU 9,400.0 75.00 148.71 6,155.9 6,099.7 - 3,337.9 - 3,982.8 6,027,707.21 465,802.65 0.00 3,091.59 9,500.0 75.00 148.71 6,181.7 6,125.5 - 3,420.4 - 3,932.7 6,027,624.48 465,852.48 0.00 3,177.00 9,521.1 75.00 148.71 6,187.2 6,131.0 - 3,437.8 - 3,922.1 6,027,607.00 465,863.00 0.00 3,195.05 Start Dir 3.0/100' 9521.10' MD, 6187.20' TVD - PS13 v2 T1 9,532.1 75.33 148.74 6,190.0 6,133.8 - 3,446.9 - 3,916.6 6,027,597.94 465,868.45 3.00 3,204.40 7" 9,557.2 76.08 148.79 6,196.2 6,140.0 - 3,467.7 - 3,904.0 6,027,577.09 465,880.98 3.00 3,225.92 Top Nuiqsut 9,600.0 77.36 148.89 6,206.0 6,149.8 - 3,503.4 - 3,882.4 6,027,541.33 465,902.40 3.00 3,262.83 9,700.0 80.35 149.12 6,225.4 6,169.2 - 3,587.4 - 3,831.9 6,027,457.04 465,952.57 3.00 3,349.82 9,773.3 82.54 149.28 6,236.3 6,180.1 - 3,649.7 - 3,794.8 6,027,394.64 465,989.43 3.00 3,414.20 End Dir 9773.30' MD, 6236.30' TVD 9,800.0 82.54 149.28 6,239.7 6,183.5 - 3,672.5 - 3,781.3 6,027,371.83 466,002.86 0.00 3,437.74 9,900.0 82.54 149.28 6,252.7 6,196.5 - 3,757.7 - 3,730.6 6,027,286.39 466,053.16 0.00 3,525.88 10,000.0 82.54 149.28 6,265.7 6,209.5 - 3,842.9 - 3,680.0 6,027,200.95 466,103.46 0.00 3,614.02 10,100.0 82.54 149.28 6,278.7 6,222.5 - 3,928.2 - 3,629.3 6,027,115.51 466,153.76 0.00 3,702.16 10,100.7 82.54 149.28 6,278.8 6,222.6 - 3,928.8 - 3,628.9 6,027,114.92 466,154.11 0.00 3,702.78 Start Dir 3.0/100' 10100.70' MD, 6278.80' TVD 10,200.0 85.30 148.15 6,289.3 6,233.1 - 4,013.2 - 3,577.7 6,027,030.35 466,205.03 3.00 3,790.09 10,300.0 88.08 147.01 6,295.0 6,238.8 - 4,097.4 - 3,524.2 6,026,945.88 466,258.20 3.00 3,877.42 10,369.1 90.00 146.23 6,296.2 6,240.0 - 4,155.1 - 3,486.1 6,026,888.00 466,296.00 3.00 3,937.34 End Dir 10369.10' MD, 6296.20' TVD - PS13 v3 T3 10,400.0 90.00 146.23 6,296.2 6,240.0 - 4,180.8 - 3,469.0 6,026,862.28 466,313.05 0.00 3,963.98 10,500.0 90.00 146.23 6,296.2 6,240.0 - 4,263.9 - 3,413.4 6,026,778.94 466,368.29 0.00 4,050.31 10,600.0 90.00 146.23 6,296.2 6,240.0 - 4,347.1 - 3,357.8 6,026,695.59 466,423.53 0.00 4,136.64 10,700.0 90.00 146.23 6,296.2 6,240.0 - 4,430.2 - 3,302.2 6,026,612.25 466,478.77 0.00 4,222.96 10,800.0 90.00 146.23 6,296.2 6,240.0 - 4,513.3 - 3,246.6 6,026,528.91 466,534.01 0.00 4,309.29 10,888.7 90.00 146.23 6,296.2 6,240.0 - 4,587.0 - 3,197.3 6,026,455.00 466,583.00 0.00 4,385.84 Start Dir 3.0/100' 10888.70' MD, 6296.20' TVD - PS13 v3 T4 10,895.2 90.16 146.34 6,296.2 6,240.0 - 4,592.4 - 3,193.7 6,026,449.56 466,586.60 3.00 4,391.48 End Dir 10895.20' MD, 6296.20' TVD 10,900.0 90.16 146.34 6,296.2 6,240.0 - 4,596.4 - 3,191.1 6,026,445.55 466,589.24 0.00 4,395.63 11,000.0 90.16 146.34 6,295.9 6,239.7 - 4,679.7 - 3,135.6 6,026,362.11 466,644.33 0.00 4,482.05 11,100.0 90.16 146.34 6,295.6 6,239.4 - 4,762.9 - 3,080.2 6,026,278.66 466,699.42 0.00 4,568.47 11,200.0 90.16 146.34 6,295.3 6,239.1 - 4,846.1 - 3,024.8 6,026,195.22 466,754.51 0.00` 4,654.89 11,254.4 90.16 146.34 6,295.2 6,239.0 - 4,891.4 - 2,994.6 6,026,149.82 466,784.48 0.00 4,701.91 Start Dir 3.0/100' 11254.40' MD, 6295.20' TVD 11,300.0 91.45 145.86 6,294.5 6,238.3 - 4,929.3 - 2,969.2 6,026,111.88 466,809.75 3.00 4,741.21 11,390.9 94.00 144.90 6,290.2 6,234.0 - 5,003.9 - 2,917.6 6,026,037.00 466,861.00 3.00 4,818.87 End Dir 11390.90' MD, 6290.20' TVD - PS13 v3 T5 11,400.0 94.00 144.90 6,289.6 6,233.4 - 5,011.4 - 2,912.4 6,026,029.52 466,866.21 0.01 4,826.63 11,500.0 94.00 144.90 6,282.6 6,226.4 - 5,093.0 - 2,855.0 6,025,947.68 466,923.23 0.00 4,911.56 2/5/2010 1:45:59PM Page 7 COMPASS 2003.16 Build 428 9 4110 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co- ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5 @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Wellbore: ODSN -21 PS13 Design: ODSN -21 PS13 wp04 Planned Survey Measured Vertical Map - Depth Inclination Azimuth Depth TVDss +N /-S +E/-W Northing , ;,_. " DLS Vert Section (ft) ( ?) ( ?) (ft) ft (ft) (ft) (ft) 4::".. (ft) ' °::_:=1,.,6,220.05 11,590.9 94.00 144.90 6,276.2 6,220.0 - 5,167.2 - 2,802.9 6,025,873.28 466,975.07 0.00 4,988.76 Start Dir 3.0/100' 11590.90' MD, 6276.20' TVD 11,600.0 93.73 144.90 6,275.6 6,219.4 - 5,174.6 - 2,797.6 6,025,865.83 466,980.25 3.01 4,996.49 11,700.0 90.73 144.90 6,271.7 6,215.5 - 5,256.4 - 2,740.2 6,025,783.86 467,037.36 3.00 5,081.55 11,723.1 90.03 144.90 6,271.6 6,215.4 - 5,275.3 - 2,726.9 6,025,764.91 467,050.57 3.00 5,101.21 End Dir 11723.10' MD, 6271.60' TVD 11,800.0 90.03 144.90 6,271.6 6,215.4 - 5,338.2 - 2,682.7 6,025,701.82 467,094.52 0.00 5,166.68 11,900.0 90.03 144.90 6,271.5 6,215.3 - 5,420.0 - 2,625.2 6,025,619.78 467,151.68 0.00 5,251.82 12,000.0 90.03 144.90 6,271.4 6,215.2 - 5,501.8 - 2,567.7 6,025,537.74 467,208.84 0.00 5,336.95 12,100.0 90.03 144.90 6,271.4 6,215.2 - 5,583.6 - 2,510.2 6,025,455.70 467,266.00 0.00 5,422.09 12,200.0 90.03 144.90 6,271.3 6,215.1 - 5,665.5 - 2,452.7 6,025,373.66 467,323.16 0.00 5,507.22 12,300.0 90.03 144.90 6,271.3 6,215.1 - 5,747.3 - 2,395.2 6,025,291.62 467,380.32 0.00 5,592.36 12,400.0 90.03 144.90 6,271.2 6,215.0 - 5,829.1 - 2,337.7 6,025,209.58 467,437.48 0.00 5,677.49 12,428.8 90.03 144.90 6,271.2 6,215.0 - 5,852.7 - 2,321.2 6,025,185.95 467,453.94 0.00 5,702.01 Start Dir 3.0/100' 12428.80' MD, 6271.20' TVD 12,432.4 90.00 144.80 6,271.2 6,215.0 - 5,855.6 - 2,319.1 6,025,183.00 467,456.00 2.97 5,705.07 PS13 v3 T6 12,500.0 88.38 146.02 6,272.2 6,216.0 - 5,911.2 - 2,280.7 6,025,127.21 467,494.15 3.00 5,762.93 12,568.4 86.73 147.25 6,275.1 6,218.9 - 5,968.3 - 2,243.1 6,025,069.99 467,531.49 3.00 5,822.16 End Dir 12568.40' MD, 6275.10' TVD 12,600.0 86.73 147.25 6,276.9 6,220.7 - 5,994.8 - 2,226.1 6,025,043.39 467,548.45 0.00 5,849.68 12,700.0 86.73 147.25 6,282.6 6,226.4 - 6,078.8 - 2,172.0 6,024,959.21 467,602.12 0.00 5,936.75 12,800.0 86.73 147.25 6,288.3 6,232.1 - 6,162.8 - 2,118.0 6,024,875.04 467,655.78 0.00 6,023.82 12,900.0 86.73 147.25 6,294.0 6,237.8 - 6,246.7 - 2,064.0 6,024,790.86 467,709.45 0.00 6,110.89 13,000.0 86.73 147.25 6,299.7 6,243.5 - 6,330.7 - 2,010.0 6,024,706.68 467,763.11 0.00 6,197.96 13,100.0 86.73 147.25 6,305.4 6,249.2 - 6,414.7 - 1,956.0 6,024,622.51 467,816.78 0.00 6,285.03 13,115.7 86.73 147.25 6,306.3 6,250.1 - 6,427.9 - 1,947.5 6,024,609.29 467,825.20 0.00 6,298.70 Start Dir 3.0/100' 13115.70' MD, 6306.30' TVD 13,194.4 86.00 145.00 6,311.2 6,255.0 - 6,493.1 - 1,903.7 6,024,543.92 467,868.71 3.00 6,366.43 End Dir 13194.40' MD, 6311.20' TVD 13,200.0 86.00 145.00 6,311.6 6,255.4 - 6,497.6 - 1,900.5 6,024,539.33 467,871.89 0.01 6,371.19 13,300.0 86.00 145.00 6,318.6 6,262.4 - 6,579.3 - 1,843.3 6,024,457.39 467,928.77 0.00 6,456.21 13,394.4 86.00 145.00 6,325.2 6,269.0 - 6,656.5 - 1,789.3 6,024,380.03 467,982.47 0.00 6,536.47 PS13 v3 T7 13,400.0 86.00 145.00 6,325.6 6,269.4 - 6,661.1 - 1,786.1 6,024,375.45 467,985.65 0.00 6,541.22 13,500.0 86.00 145.00 6,332.6 6,276.4 - 6,742.8 - 1,728.9 6,024,293.51 468,042.53 0.00 6,626.24 13,594.4 86.00 145.00 6,339.2 6,283.0 - 6,819.9 - 1,674.9 6,024,216.16 468,096.22 0.00 6,706.50 Start Dir 3.0/100' 13594.40' MD, 6339.20' TVD 13,600.0 86.16 144.97 6,339.5 6,283.3 - 6,824.5 - 1,671.7 6,024,211.57 468,099.41 2.99 6,711.26 13,686.6 88.71 144.47 6,343.4 6,287.2 - 6,895.1 - 1,621.7 6,024,140.76 468,149.08 3.00 6,784.76 End Dir 13686.60' MD, 6343.40' TVD 13,700.0 88.71 144.47 6,343.7 6,287.5 - 6,906.0 - 1,613.9 6,024,129.83 468,156.82 0.00 6,796.11 13,800.0 88.71 144.47 6,345.9 6,289.7 - 6,987.4 - 1,555.8 6,024,048.24 468,214.59 0.00 6,880.83 13,900.0 88.71 144.47 6,348.2 6,292.0 - 7,068.7 - 1,497.7 6,023,966.65 468,272.35 0.00 6,965.54 14,000.0 88.71 144.47 6,350.4 6,294.2 - 7,150.1 - 1,439.6 6,023,885.07 468,330.11 0.00 7,050.26 2/5/2010 1:45:59PM Page 8 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co -ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Wel!bore: ODSN - 21 PS13 Design: ODSN - 21 PS13 wp04 Planned Survey Measured Vertical Map :,,:; , Depth . Inclination Azimuth Depth TVDss +NI-S +E/-W Northing ;, " "" ,- DLS Vert Section (ft) ( ?) ( ?) (ft) ft (ft) (ft) (ft) ; "` ., l' ''' `Ti4 , ,6,296 48 14,100.0 88.71 144.47 6,352.7 6,296.5 - 7,231.5 - 1,381.5 6,023,803.48 468,387.88 0.00 7,134.97 14,200.0 88.71 144.47 6,354.9 6,298.7 - 7,312.8 - 1,323.4 6,023,721.89 468,445.64 0.00 7,219.69 14,203.1 88.71 144.47 6,355.0 6,298.8 - 7,315.3 - 1,321.6 6,023,719.37 468,447.43 0.00 7,222.31 Start Dir 3.0/100' 14203.10' MD, 6355.00' TVD 14,300.0 89.87 141.80 6,356.2 6,300.0 - 7,392.8 - 1,263.5 6,023,641.63 468,505.23 3.00 7,303.19 14,311.0 90.00 141.50 6,356.2 6,300.0 - 7,401.4 - 1,256.7 6,023,633.00 468,512.00 3.00 7,312.18 PS13 v3 T8 14,400.0 90.12 144.17 6,356.1 6,299.9 - 7,472.4 - 1,202.9 6,023,561.85 468,565.49 3.00 7,386.24 14,473.0 90.22 146.36 6,355.9 6,299.7 - 7,532.4 - 1,161.3 6,023,501.70 468,606.83 3.00 7,448.63 End Dir 14473.00' MD, 6355.90' TVD 14,500.0 90.22 146.36 6,355.8 6,299.6 - 7,554.9 - 1,146.4 6,023,479.16 468,621.70 0.00 7,471.97 14,600.0 90.22 146.36 6,355.4 6,299.2 - 7,638.1 - 1,091.0 6,023,395.70 468,676.76 0.00 7,558.41 14,700.0 90.22 146.36 6,355.0 6,298.8 - 7,721.4 - 1,035.6 6,023,312.23 468,731.81 0.00 7,644.85 14,732.4 90.22 146.36 6,354.9 6,298.7 - 7,748.3 - 1,017.6 6,023,285.19 468,749.65 0.00 7,672.85 Start Dir 3.0/100' 14732.40' MD, 6354.90' TVD 14,800.0 92.19 145.90 6,353.5 6,297.3 - 7,804.4 -979.9 6,023,228.93 468,787.08 3.00 7,731.13 14,861.8 94.00 145.49 6,350.1 6,293.9 - 7,855.4 -945.2 6,023,177.82 468,821.65 3.00 7,784.11 End Dir 14861.80' MD, 6350.10' TVD 14,900.0 94.00 145.49 6,347.5 6,291.3 - 7,886.8 -923.6 6,023,146.33 468,843.11 0.00 7,816.76 15,000.0 94.00 145.49 6,340.5 6,284.3 - 7,969.0 -867.0 6,023,063.91 468,899.29 0.00 7,902.21 15,061.8 94.00 145.49 6,336.2 6,280.0 - 8,019.8 -832.1 6,023,013.00 468,934.00 0.00 7,955.01 PS13 v3 T9 15,100.0 94.00 145.49 6,333.5 6,277.3 - 8,051.2 -810.5 6,022,981.50 468,955.48 0.00 7,987.67 15,200.0 94.00 145.49 6,326.6 6,270.4 - 8,133.4 -754.0 6,022,899.08 469,011.66 0.00 8,073.13 15,261.8 94.00 145.49 6,322.2 6,266.0 - 8,184.2 -719.1 6,022,848.14 469,046.38 0.00 8,125.94 Start Dir 3.0/100' 15261.80' MD, 6322.20' TVD 15,283.9 93.34 145.48 6,320.8 6,264.6 - 8,202.4 - 706.6 6,022,829.92 469,058.80 3.00 8,144.84 End Dir 15283.90' MD, 6320.80' TVD • 15,300.0 93.34 145.48 6,319.9 6,263.7 - 8,215.6 -697.5 6,022,816.64 469,067.85 0.00 8,158.60 15,400.0 93.34 145.48 6,314.1 6,257.9 - 8,297.9 -640.9 6,022,734.17 469,124.09 0.00 8,244.12 15,500.0 93.34 145.48 6,308.3 6,252.1 - 8,380.1 -584.3 6,022,651.69 469,180.32 0.00 8,329.63 15,600.0 93.34 145.48 6,302.4 6,246.2 - 8,462.4 -527.7 6,022,569.22 469,236.55 0.00 8,415.15 15,651.3 93.34 145.48 6,299.4 6,243.2 - 8,504.6 -498.7 6,022,526.91 469,265.40 0.00 8,459.02 Start Dir 3.0/100' 15651.30' MD, 6299.40' TVD 15,700.0 91.88 145.50 6,297.2 6,241.0 - 8,544.7 -471.2 6,022,486.71 469,292.79 3.00 8,500.70 15,762.6 90.00 145.54 6,296.2 6,240.0 - 8,596.2 -435.7 6,022,435.00 469,328.00 . 3.00 8,554.31 PS13 v3 T10 15,800.0 88.88 145.54 6,296.6 6,240.4 - 8,627.1 -414.6 6,022,404.07 469,349.05 3.00 8,586.39 15,879.7 86.49 145.54 6,299.8 6,243.6 - 8,692.7 -369.5 6,022,338.24 469,393.84 3.00 8,654.64 End Dir 15879.70' MD, 6299.80' TVD 15,900.0 86.49 145.54 6,301.0 6,244.8 - 8,709.4 -358.0 6,022,321.49 469,405.23 0.00 8,672.00 16,000.0 86.49 145.54 6,307.2 6,251.0 - 8,791.7 -301.6 6,022,238.97 469,461.38 0.00 8,757.55 16,100.0 86.49 145.54 6,313.3 6,257.1 - 8,874.0 -245.1 6,022,156.46 469,517.52 0.00 8,843.10 16,200.0 86.49 145.54 6,319.4 6,263.2 - 8,956.3 -188.6 6,022,073.94 469,573.66 0.00 8,928.65 16,300.0 86.49 145.54 6,325.5 6,269.3 - 9,038.6 -132.1 6,021,991.43 469,629.80 0.00 9,014.20 2/5/2010 1:45:59PM Page 9 COMPASS 2003.16 Build 428 I . • • Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co- ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5 @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Welibore: ODSN - 21 PS13 Design: ODSN - 21 PS13 wp04 Planned Survey Measured Vertical Map Depth Inclination Azimuth Depth TVDss +N /-S +E/-W Northing # DLS Vert Section (ft) ( ?) ( ?) (ft) ft (ft) (ft) (ft) 4 : .:` ft) ' t ,275.46 16,400.0 86.49 145.54 6,331.7 6,275.5 - 9,120.9 -75.6 6,021,908.92 469,685.94 0.00 9,099.75 16,500.0 86.49 145.54 6,337.8 6,281.6 - 9,203.2 -19.1 6,021,826.40 469,742.08 0.00 9,185.30 16,600.0 86.49 145.54 6,343.9 6,287.7 - 9,285.5 37.3 6,021,743.89 469,798.23 0.00 9,270.86 16,700.0 86.49 145.54 6,350.0 6,293.8 - 9,367.8 93.8 6,021,661.38 469,854.37 0.00 9,356.41 16,800.0 86.49 145.54 6,356.2 6,300.0 - 9,450.1 150.3 6,021,578.86 469,910.51 0.00 9,441.96 16,900.0 86.49 145.54 6,362.3 6,306.1 - 9,532.4 206.8 6,021,496.35 469,966.65 0.00 9,527.51 17,000.0 86.49 145.54 6,368.4 6,312.2 - 9,614.7 263.3 6,021,413.83 470,022.79 0.00 9,613.06 17,100.0 86.49 145.54 6,374.5 6,318.3 - 9,697.0 319.7 6,021,331.32 470,078.94 0.00 9,698.61 17,200.0 86.49 145.54 6,380.7 6,324.5 - 9,779.3 376.2 6,021,248.81 470,135.08 0.00 9,784.16 17,300.0 86.49 145.54 6,386.8 6,330.6 - 9,861.6 432.7 6,021,166.29 470,191.22 0.00 9,869.71 17,400.0 86.49 145.54 6,392.9 6,336.7 - 9,943.9 489.2 6,021,083.78 470,247.36 0.00 9,955.26 17 500.0 86.49 145.54 6,399.1 6,342.9 -10,026.1 545.7 6,021,001.26 470 303.50 0.00 10,040.81 17,600.0 86.49 145.54 6,405.2 6,349.0 - 10,108.4 602.2 6,020,918.75 470,359.64 0.00 10,126.36 17,616.6 86.49 145.54 6,406.2 6,350.0 - 10,122.1 611.5 6,020,905.05 470,368.96 0.00 10,140.56 Total Depth at 17616.70' MD, 6406.20' TVD . 17,616.7 86.49 145.54 6,406.2 • 6,350.0 - 10,122.2 611.6 6,020,905.00 470,369.00 0.00 10,140.61 PS13 v3 T11 2/5/2010 1 :45:59PM Page 10 COMPASS 2003.16 Build 428 • Halliburton Company HALL1BURTON Standard Proposal Report Database: .Pioneer Alaska Local Co- ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk TVD Reference: 42.7' + 13.5 @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7 + 13.5 @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN - 21 Survey Calculation Method: Minimum Curvature Welibore: ODSN -21 PS13 Design: ODSN -21 PS13 wp04 Targets Target Name • - hit/miss target Dip Angle Dip Dir. TVD +NI-S +E/ W .. ~ Lt _ ing Easting - Shape ( ?) ( ?) (ft) (ft) (ft) ,,. `�' y ) (ft) PS13 v3 T3 0.00 0.00 6,296.2 - 4,155.1 - 3,486.1 6,026,888.00 466,296.00 - plan hits target - Point PS13 v3 T8 0.00 0.00 6,356.2 - 7,401.4 - 1,256.7 6,023,633.00 468,512.00 - plan hits target - Point PS13 v3 T 0.00 6 336.2 -8 019.8 -832.1 6,023,013.00 468 934.00 S 3 3 9 0.00 0 , - plan hits target - Point PS13 v3 T5 0.00 0.00 6,290.2 - 5,003.9 - 2,917.6 6,026,037.00 466,861.00 - plan hits target - Point PS13 v3 T4 0.00 0.00 6,296.2 - 4,587.0 - 3,197.3 6,026,455.00 466,583.00 - plan hits target - Point PS13 v3 T7 0.00 0.00 6,325.2 - 6,656.5 - 1,789.3 6,024,380.03 467,982.47 - plan hits target - Point PS13 v2 T1 0.00 0.00 6,187.2 - 3,437.8 - 3,922.1 6,027,607.00 465,863.00 - plan hits target - Point PS13 v3 T11 0.00 0.00 6,406.2 - 10,122.2 611.6 6,020,905.00 470,369.00 - plan hits target - Point PS13 v3 T6 0.00 0.00 6,271.2 - 5,855.6 - 2,319.1 6,025,183.00 467,456.00 - plan hits target - Point PS13 v3 T10 0.00 0.00 6,296.2 - 8,596.2 -435.7 6,022,435.00 469,328.00 - plan hits target - Point Casing . Measured V ; s Casing Hole Depth Depth ,,. Diameter Diameter (ft) (ft) :: (in) (in) 3,416.9 3,000.0 11 3/4" 11.750 14.500 7,487.5 5,285.0 9 5/8" 9.625 11.750 9,532.1 6,190.0 7" 7.000 8.500 17,616.7 6,406.2 4 1/2" 4.500 6.125 2/5/2010 1:45:59PM Page 11 COMPASS 2003.16 Build 428 1 • • Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN - 21 - Slot ODS - 21 Company: Well Planning - Pioneer - Oooguruk 'TVD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Project: Oooguruk Development MD Reference: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Site: Oooguruk Drill Site North Reference: True Well: ODSN -21 Survey Calculation Method: Minimum Curvature Wellbore: ODSN -21 PS13 Design: ODSN -21 PS13 wp04 s Formations Measured Vertical Vertical '.11k-, '., Dip Depth Depth Depth SS ` ' Direction (ft) (ft) ft; .:.:; Dip en Lid &. ( ) 9,343.4 6,141.2 BCU 0.00 5,690.2 4,261.2 Brook 2b 0.00 8,380.1 5,786.2 Top Hrz 0.00 8,546.6 5,865.2 Black 1 fault 0.00 3,273.0 2,920.2 Tuffaceous Shales 0.00 8,758.9 5,956.2 Kalubik Mkr 0.00 9,557.2 6,196.2 Top Nuiqsut 0.00 8,645.9 5,909.2 Base Hrz 0.00 2,369.2 2,290.2 Top West Sak 0.00 8,917.7 6,016.2 Top Kup C 0.00 7,471.2 5,275.2 Base Torok Ss 0.00 7,042.9 5,018.2 Top Torok Ss 0.00 8,975.5 6,036.2 Base Kuparuk 0.00 Plan Annotations r Measured Vertical Local Coordinates , ' ' �` io Na a;- Depth Depth +N/-S +E/-W 'r s'' f::5 ry � a (ft) (ft) (ft).u.'; '.z' (ft) : „'_. 500.0 500.0 0.0 0.0 Start Dir 1.00/100' 500.00' MD, 500.00' TVD 800.0 799.9 0.7 -7.8 Start Dir 2.00/100' 800.00' MD, 799.90' TVD 1,000.0 999.1 2.2 -25.2 Start Dir 1.50/100' 1000.00' MD, 999.10' TVD 1,666.3 1,650.0 14.3 -163.0 End Dir 1666.30' MD, 1650.00' TVD 1,770.9 1,750.0 16.9 -193.4 Start Dir 3.0/100' 1770.90' MD, 1750.00' TVD 3,204.7 2,882.3 -180.0 -994.4 End Dir 3204.70' MD, 2882.30' TVD 6,715.0 4,829.8 - 1,362.1 - 3,665.0 Start Dir 3.5/100' 6715.00' MD, 4829.80' TVD 9,221.1 6,109.5 - 3,190.2 - 4,072.6 End Dir 9221.10' MD, 6109.50' TVD 9,521.1 6,187.2 - 3,437.8 - 3,922.1 Start Dir 3.0/100' 9521.10' MD, 6187.20' TVD 9,773.3 6,236.3 - 3,649.7 - 3,794.8 End Dir 9773.30' MD, 6236.30' TVD 10,100.7 6,278.8 - 3,928.8 - 3,628.9 Start Dir 3.0/100' 10100.70' MD, 6278.80' TVD 10,369.1 6,296.2 - 4,155.1 - 3,486.1 End Dir 10369.10' MD, 6296.20' TVD 10,888.7 6,296.2 - 4,587.0 - 3,197.3 Start Dir 3.0/100' 10888.70' MD, 6296.20' TVD 10,895.2 6,296.2 - 4,592.4 - 3,193.7 End Dir 10895.20' MD, 6296.20' TVD 11,254.4 6,295.2 - 4,891.4 - 2,994.6 Start Dir 3.0/100' 11254.40' MD, 6295.20' TVD 11,390.9 6,290.2 - 5,004.0 - 2,917.6 End Dir 11390.90' MD, 6290.20' TVD 11,590.9 6,276.2 - 5,167.2 - 2,802.9 Start Dir 3.0/100' 11590.90' MD, 6276.20' TVD 11,723.1 6,271.6 - 5,275.3 - 2,726.9 End Dir 11723.10' MD, 6271.60' TVD 12,428.8 6,271.2 - 5,852.7 - 2,321.2 Start Dir 3.0/100' 12428.80' MD, 6271.20' TVD 12,568.4 6,275.1 - 5,968.3 - 2,243.1 End Dir 12568.40' MD, 6275.10' TVD 13,115.7 6,306.3 - 6,427.9 - 1,947.5 Start Dir 3.0/100' 13115.70' MD, 6306.30' TVD 13,194.4 6,311.2 - 6,493.1 - 1,903.7 End Dir 13194.40' MD, 6311.20' TVD 13,594.4 6,339.2 - 6,819.9 - 1,674.9 Start Dir 3.0/100' 13594.40' MD, 6339.20' TVD 13,686.6 6,343.4 - 6,895.1 - 1,621.7 End Dir 13686.60' MD, 6343.40' TVD 14,203.1 6,355.0 - 7,315.3 - 1,321.6 Start Dir 3.0/100' 14203.10' MD, 6355.00' TVD 14,473.0 6,355.9 - 7,532.4 - 1,161.3 End Dir 14473.00' MD, 6355.90' TVD 14,732.4 6,354.9 - 7,748.3 - 1,017.6 Start Dir 3.0/100' 14732.40' MD, 6354.90' TVD 14,861.8 6,350.1 - 7,855.4 -945.2 End Dir 14861.80' MD, 6350.10' TVD 15,261.8 6,322.2 - 8,184.2 -719.1 Start Dir 3.0/100' 15261.80' MD, 6322.20' TVD 15,283.9 6,320.8 - 8,202.4 -706.6 End Dir 15283.90' MD, 6320.80' TVD 15,651.3 6,299.4 - 8,504.6 -498.7 Start Dir 3.0/100' 15651.30' MD, 6299.40' TVD 15,879.7 6,299.8 - 8,692.7 -369.5 End Dir 15879.70' MD, 6299.80' TVD 17,616.6 6,406.2 - 10,122.1 611.5 Total Depth at 17616.70' MD, 6406.20' TVD 2/5/2010 1:45:59PM Page 12 COMPASS 2003.16 Build 428 Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN -21 ODSN -21 PS13 ODSN -21 PS13 wp04 • Sperry Drilling Services Clearance Summary } Anticollision Report 05 February, 2010 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Well Coordinates: 6,031,028.53 N, 469,798.62 E (70° 29' 45.03" N, 150° 14' 49.04" W) Datum Height: 42.7' + 13.5' © 56.2ft (Nabors 19AC) Scan Range: 42.7 to 1,900.0 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Geodetic Scale Factor Applied Version: 2003.16 Build: 42B Scan Type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference Scan Type: 25.00 !. A: HALLIBURTON Sperry Drilling Services ■Sl. REFERENCE INFORMATION ANTI-COLLISION SETTINGS SURVEY PROGRAM Co (NIE) Reference: Well ODSN - 0101 ODS True North Interpolation Method: MD, interval: 25.0 Date: 2010-02-05T00:00:00 Validated: Yes Version: Vertical (TVD) Reference: 42.7' . 13.5' 0/56.211 (Nabors 194C) Depth Range From: 42.7 To 1900.0 I Section (VS) Reference: Slot - ODS 0.0E) Results Limited By: Centre Distance: 1957.4 Depth From Depth To Survey/Plan Tool Measured Depth Reference: 42.T. 13.0 @ 56.2ft (Nabors 19AC) Reference: Plan: ODSN-21 PS13 wp04 (ODSN-21/0DSN-21 PS13) 42.7 1900.0 ODSN-21 PS13 wp04 SR-Gyro-SS Calculation Method: Minimum Curvature ODSK-14 Kupt3I Scan Type: GLOBAL FILTER APPLIED: All wellpaths within 2001' 100/1000 of reference 1900.0 17616.7 ODSN-21 PS13 wp04 PAWDelFR2eMSesag .FOENO , , , lopsN,Iii !sill IODSN-911S9 1ODSN-6 PS5I I PS3I -0 ODSMI-4•100SOVIIAA 32056.4.51.8641-44 ......0 O NAD 27 ASP Zone 4 / : WEU. DETAILS: 00511.21 , o cosono/ „ 0C6.220O*C1050/12Wv.02N1 I „•• COS,. Clx,13.4•1002213.231V0 -- ,..../..2„., 1' ' 7 ,..„2 :....„, 4 / I i - IODSN 1 ' -5i1S41 Ground Levet 13 05.2 OC. 14 55.33 0.514 66840 I ODSK-14 KupB ? : I . - ; 28 1 : .... . ... ... _ . •N/..9 .cr-w Northing Easting Lannon o. Slot 4560 ODSN11 4- ons0n ocs., vim 00.5.o550...N nowo 0.0 SO 6031028.53 469798.62 70 29 45Sn N 150 104 9.036 W 0135-21 . 002653 0.2 402 000.3 " 4 - a , ,,, - F- -...- 00.. 005,33 PB112. 0356-03 M.A. .C.'7:- ';;';i ' 0 •,.' %. . COS,. 005,15,1,,,10..51.(M/0 i 1 • ' , 1 6 1 / „ .7. 2 " '0. 18 , 01 0 %'. % : • . CO... 0.4335.0 00.33 .30 94.. I 1 5 i f t 1 / I /1ftil6/1• ' 1 1 :: , 2 , 7 : 1 ; j 11 4 . . , : N...., • : '1'.... , i5.7 . .S .... N:f1 ,... 6 , i IN 1. - 1 -55- 0036-41 00.41 642.013.41.23.0352 ODSN-31 IS2I -- I -13- 0124241 00.41 P81 1048 COSKAI P51 05. VO 33;1. ... . 0 -8- 052.8 005.25 0.42.0 \ ‘ i i ■ 4 ! 0, ( q ,,/,-)....--iiii, ..., .• ODSK-33 KupA ODSN-19i SW3 -+\ i„..... _.. 0 ,,, - ,, 0 , & , , ,...,,,„„ „, \ 1 :; ,‘,',' 0 , , , l'„,.. 4 .• ',7 •,',',,, ,.% , i'N . N s. - - , 1 #4 1. 444.......... „ ' „,:-. -- - • I Ar -,... , •I '20 -- - __ _ ., /,,, . '';• Range 0 1000 /, / , /,',• , .... .. , ■14, 44......„ , ange - ' ' „HODSN•10 PS12I 54- 00222 CO. 18 is. 0024.211.3360 ' \ k\ \1101 -'--- ' ,, .'., ••• 1 ,3 . , \...Z4.9303.34.462.■;""• . . ODSDW2-20 Dispose . 00340 OD. 1.210 02254.12 5510.13 SCH.. •• Minor Risk 1/2 --- i A ir Ai A Allf ODSN-17 PN13 _/.....-„, . „ .....".., „ ....,.■•.r........" ...- ...-,- Range 0 - 1000' ▪ 00,..,,,,,,,,,.,,,20, '-' • - ' " ; '..:■"-::".•:' : - . , - - I ODSN-26 Ph111 ', Minor Risk 1/10 42 00.17 00.17241.3.008417443200.0 a Al r irj r f ° .0 • ; 1 5 N. , p ))I . - -- ---. - X - 005.2.0..2.51.005.4-2P51.08. DSN-19i SW3 300,40A, Fir 1 lOifiej:3 60 I I, V 000.2 002423.14 086.8.4.22 ••■•••• • ......".... \ . '.5 41"..".."1*"' f'...' 0i 4b,‘ 4 4 A A As / -t- ODE... 005•4-2Y1318 0054.23415.3.32. Range 0 - 1900' ODSN-27i1N2 .6. •%t,' ,‘ 1 , , ... '.....,,, ..... . 1 ...4-26 0..4.2W0 Minor Risk 1/20. ( - ''.• -.1 i i lf( li . , -.-,,,,, , ...,,,..„....,..",,,,,.........,,,,,..,, , ._...,.....................,,, ODSN-2211514 ' / ,- ie....0...o. c.........m ,. , 'ODSN-29i1N4 1 ,. ,..s...,, ,,,.,.,., .,.,,.,,,,...,,,,,,, .• • , Range 0 - 1390 / el.- °own .....m.i.., moi.ue,eu.......,....... -i.-...zei-iii mei-nuimim thi.,/,•6„. ••••., ...re I Minor Rrsk 1/1 - , -,.. mwn,..w.u.o.mem,e,../.., , ._,,_00,,,,,,,...,,,,,,.„,v„, - - -- .- -fp- 005■1.74 005X-MIPSO 005...B•11.W i '''11-d'i?':'4:9f4_ 4‘Yil41141411 1 44 006.3 40.1.34431 00.34531 HO. • i 5 5 \ 4- 006.6 00343.81. 006 P. 800 VO • -8, 002436 00.30 602 cos... 65.5.8 2400' i....! ..,. .......__ _ -.II-III : - , .'i•p. 1 ... • i , \ \ ' •• • ''''' II 0.43 .10 00283.5110 Stn.. . • ■, 4 : : • .!.. 0 ‘ , 0 “ ... :' ! ''''••••• 1°DSN-311 • 4 • • 8 , , 1 • , i ,11 4._ 3 :5 -8 .6237. 0004 37 0304.37 44.11 . / i 5 \ / _,.... - -- - -655 002 0.4331811 005233 4112 . • 0 ••. ' • I ODSN-34 1N9 •-••• - -4 00681 133225 22 04.4 8.3.0253 111111111111111.L.- ' . ! i - ' . 4• . •.! ,,,, : • . , 4 „,... •• .499 IODSN-32i1N7 \ , sa ;:e.'•• • '', ■"4.„,,ir . ... Of.. 0■19.0 F1112 co.. P. 254. v0 ' - ' . •• ■ ; ..5 .' • -•• ' ;•••,/,343;0r,„2 .3 0 00.55.23005 3403 0,502080. 3343. , 5 '' ' ';',./. . • 'r/ „ I; 0 1 ‘••• ' 5 .$. .. -.- 002.0 002,2332.13 00.40232 2 50 . '. ■N ' j! : 41 . 035.3 C54624.213 24 0..3.13..12 '1 k.. II . • 1 ‘ V 1/1(1120 • ■ , . • 1 ,!:.- -4- ▪ 002,46 0.5. 8356 005.6 P515.3 VO ....4 • . ' • • "At' N.: -8- 00644.236.40.4 00042 N. 58. 58 1 ' al I '' . OC6,43 OC.411.4 0338.2 14 0.1 VO • - ' • - 1 • ' ' s , - '`‘. ,, e , or Risk 1/10 ., - 43- 002 0004-3 24 00352 64 463. . 13- 002. 00.6535 0046 6 P.58.310 4, 00.71. COS. 67 Oa. 5.6.7 40620 • • onsrve 003.2353 00234 a p583.309.2Kx.s. \ \ , '. '2 ' ' • 71* , : -.1... ,,,,,.., .. ..., ,..r ODSN-36 PN10 , , kr ■0 ,'',. , , . '.,. . -.-....'.....„4„,„ ., • / -- ',IODSDW,144 Disposal OD SN-23i 16 16 21 8 - 150 0 I''' - e .. \ •;,'. - '. ' ktt •• ' --"''.' . ;, /7 • 9 ; : i ■ii'• • ' " - i / --' ‘‘, .' ' • Minor Risk 1/200 • DSN-23i 1516 .. ' i I ---- _ ' ' '' '.'"" ' ---..'..,, • ' ' •'"'''' ';'," # ' • ' .1 // .,,,., ,, ODSK-38 KupD 180 • 240 ange 0 - 1900' i ' .-- ' ' ' " '" il' '' i // 2() , , .- OD •.-..-- . ,.,..er .' • • s I v , ., , i 1 J , SN-37 1 Travelling Cylinder Azimuth (TFO+AZI) PI vs Centre to Centre Separation 15 ft/in1 .. inor Ftisk 1/200 SEC110.10ETNIA ' ......." - r.,7 ODSN - 43 - 230 . 08 1m lei MD .5 .840 Illog Tro V. ra. , # J. . 1 , ‘ .0 500 87 OM 000 42 20 0.0 OM 200 02 1:-....,,,5, 1 ',.• - ' r / : '', ODSK-41 KupFI MOO 00 ON ON „._,. ,„ _ ,,„ GOO 000 502 Oh 0.0 000.0 300 275 31 793 0 7 -7.3 100 273* .ry Imo 7 00 27503 999 22 .25/ 200 000 47 ■10.."..',er.2,,41* ... -•-'' - 7 / / , , .., F ODSN-40 PN12.1 1603 3 16 . 273.30 1650 .3 483.0 150 010 *1 ,,,„ ,,,, 1710 9 18. 27540 1752 89 4934 000 0* 1958 0 . 77 27500 1000 215 .2.0 303 000 *3 ti;r____.... .. 0' , ,,,.. . ... \ 1 ODSK-42A11 ,,,,,-,,,,, 32047 5630 248 13 N. -1030 .1.4 300 404/ 1/93 67150 5630 228 13 .8 4362 1 46650 0 00 0 03 11366 ••• *.••••• 30 • . 4 4 4 ,... , , , 3000 - 3.30,3 0 9221 1 7500 143 71 6100. 41932 48728 3 SO 406 54 .666 . , V, ,,,,,,- • 551,_ ,442/ . 22.. asco 1 95. 1 7503 149 71 6167 .378 4922 / 0 00 0.00 31950 1 3271 2 97733 82 SI 120 26 6.3 .197 -TM 0 303 4.31 34142 2600 - 2793 5 , I ODSK-42i KupO 2720 3300 3 0100 7 82. 1.20 8272 43228 .289 0 00 0 00 37026 14 0.1 33 00 148 28 6298 4160 1 4486 1 3 00 42 00 3937 3 521.3. . , . 4 . 0 5 06067 02 00 1.. 8.6 4507 0 .31073 0 33 0 00 M. 831.3 74 21. 1 "'-- • ..,r.."' 180 ', , 2 . 5 3. 03 00052 . 0212 1.04 8296 45E22 4193 7 333 .86 5. 5 . , • 18 1390 9 KW 14.96 6203 40030 .176 300 -3.2 .09 2213.25 ODSN-45AI OOSN43 PS1 4500 00 Mg 19 1598.9 0200 12.8 8270 .51672 .020 000 203 2902.7 . . 3000 _ 0033 - , , 23 1723.1 BO 03 14420 6271 .52753 sm. 330 103 03 51012 conwr o e Tula v., Pluri, Plemar -00M 206 , WOO 50,55 • MN 10. g 2 2:11: 70: Ittr0 2 :851; tr.; 10; •107.: :91! PS13.% . i . 23 2530.4 0673 14/ 25 0273 4060.3 .431 3103 143.8 50222 , 180 . i . I -3 rr „ ,... . 3115 7 6673 14725 63. 4.7 9 .1.7 5 0 00 0 00 41590 7 . . 31.2 WOO 14500 8311 .031 ..33.7 300 .106.17 W. 3.2,2etnce 1. C.. Horth I , i 1 - 130. 26 .14 BB 00 1.00 6321 265. 47019 3 OM 0 00 65362 .213.17 I Warn. 11653504 5.8.1022. 4 ODSN-46 PS15I 66.00 . 145 CO 6339 431. .16.0 0 00 300 87085 ...,,.., El Aan 1 .71 14247 6355 .73152 .1.16 0 00 0 00 722. ,•• , 15006 1220 33 .11 0 00 00 141 53 6356 .72012 4.256 7 3 03 23861 7312 2 851.3713 , 5005 - 50. 31 0730 30. 1.30 6355 .753. -11613 300 87 44 7.7 Mart 0308,21 1813 .04808.005 /8. 200 .: • tr1D S N - 14, ,,,,,,,,, A1 ,,,,,,,,_ 32 17724. son 1.36 6354 4748 0 .1017.6 0 00 0 00 76726 40.508 0.3- 0053 0,80„ ow 1277 FR.., 03 201O ODSN-48111.1 .... 1 „„„_ . 11 5513 4 30 C... D5'.• 30000 „pp, : '2' :61,r4 = MI '": : :: .14: Vir9: Rammed .6. 37 3.13 0329 1.98 6.9 2.026 4082 000 000 3.20 36 S7226 WOO 1.4554 83. 4.2 .57 306 173. 8.3 3613 5.3 710 .62 - - Fravelling Cylinder Azimuth (1T0-1AZI 7 vs Centre to Centre Separation 125 ft/ini 30 5.7 21851.9 1.51 6231 -8632 7 463 3 300 1353.00 81.6 . 76167 36. 143 51 .06 ,0, .n. 0 00 0 00 1020 6 8.3.701 ■ Well Planning - Pioneer - Oooguruk HALLIBURTON Oooguruk Development Anticollision Report for ODSN -21 - ODSN -21 PS13 wp04 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Scan Range: 42.7 to 1,900.0 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft Oooguruk Drill Site • ODSDW1 -44 - ODSDW1 -44 Disposal - ODSDW1 -44 C 574.7 28.5 574.7 18.5 575.0 2.855 Centre Distance Pass - Major Risk ODSDW1 -44 - ODSDW1 -44 Disposal - ODSDW1 -44 C 674.2 29.3 674.2 17.7 675.0 2.529 Clearance Factor Pass - Major Risk ODSDW2 -20 - ODSDW2 -20 Disposal - ODSDW2 -20 C 500.0 7.0 500.0 4.2 500.0 2.465 Centre Distance Pass - Minor Risk 1/10 ODSDW2 -20 - ODSDW2 -20 Disposal - ODSDW2 -20 C 525.0 7.1 525.0 4.1 525.0 2.414 Clearance Factor Pass - Minor Risk 1/10 ODSK -13i - ODSK -13i KupH - ODSK -13i KupH 475.0 65.4 475.0 56.8 475.0 7.628 Centre Distance Pass - Major Risk ODSK -13i - ODSK -13i KupH - ODSK -13i KupH 599.2 66.4 599.2 55.9 600.0 6.325 Clearance Factor Pass - Major Risk ODSK -14 - ODSK -14 KupB - ODSK -14 KupB wp04.b 574.5 58.9 574.5 48.3 575.0 5.557 Centre Distance Pass - Major Risk ODSK -14 - ODSK -14 KupB - ODSK -14 KupB wp04.b 748.3 60.3 748.3 46.6 750.0 4.396 Clearance Factor Pass - Major Risk ODSK -14 - ODSK -14 KupB - ODSK -14 KupB 325.0 59.0 325.0 52.9 325.0 9.668 Centre Distance Pass - Major Risk ODSK -14 - ODSK -14 KupB - ODSK -14 KupB 599.3 61.3 599.3 50.2 600.0 5.483 Clearance Factor Pass - Major Risk ODSK -14 - ODSK -14 PB1 KupB - ODSK -14 PB1 KupE 325.0 59.0 325.0 52.9 325.0 9.668 Centre Distance Pass - Major Risk ODSK -14 - ODSK -14 PB1 KupB - ODSK -14 PB1 KupE 599.3 61.3 599.3 50.2 600.0 5.483 Clearance Factor Pass - Major Risk ODSK -33 - ODSK -33 KupA - ODSK -33 KupA 915.5 103.0 915.5 86.6 925.0 6.276 Centre Distance Pass - Major Risk ODSK -33 - ODSK -33 KupA - ODSK -33 KupA 964.1 103.4 964.1 86.1 975.0 5.962 Clearance Factor Pass - Major Risk ODSK -33 - ODSK -33 PB1 KupA - ODSK -33 PB1 KupP 915.5 103.0 915.5 86.6 925.0 6.276 Centre Distance Pass - Major Risk ODSK -33 - ODSK -33 PB1 KupA - ODSK -33 PB1 KupP 964.1 103.4 964.1 86.1 975.0 5.962 Clearance Factor Pass - Major Risk ODSK -35i - ODSK -35 KupB - ODSK -35 KupB Surveys 175.0 97.3 175.0 94.2 175.0 30.681 Centre Distance Pass - Major Risk • ODSK -35i - ODSK -35 KupB - ODSK -35 KupB Surveys 573.9 98.9 573.9 88.7 575.0 9.729 Clearance Factor Pass - Major Risk ODSK -35i - ODSK -35i KupH - ODSK -35i KupH wp06 175.0 97.3 175.0 94.2 175.0 30.681 Centre Distance Pass - Major Risk ODSK -35i - ODSK -35i KupH - ODSK -35i KupH wp06 573.9 98.9 573.9 88.7 575.0 9.729 Clearance Factor Pass - Major Risk ODSK -38i - ODSK -38i KupD - ODSK -38i KupD SurveyE 523.4 65.5 523.4 56.1 525.0 6.928 Centre Distance Pass - Major Risk ODSK -38i - ODSK -38i KupD - ODSK -38i KupO Survey 597.6 66.0 597.6 55.3 600.0 6.155 Clearance Factor Pass - Major Risk ODSK -41 - ODSK -41 KupF - ODSK -41 KupF Surveys 373.7 47.9 373.7 40.9 375.0 6.854 Centre Distance Pass - Major Risk ODSK -41 - ODSK -41 KupF - ODSK -41 KupF Surveys 448.7 48.3 448.7 40.1 450.0 5.867 Clearance Factor Pass - Major Risk ODSK -41 - ODSK -41 PB1 KupF - ODSK -41 PB1 KupF 373.7 47.9 373.7 40.9 375.0 6.854 Centre Distance Pass - Major Risk ODSK -41 - ODSK -41 PB1 KupF - ODSK -41 PB1 KupF 448.7 48.3 448.7 40.1 450.0 5.867 Clearance Factor Pass - Major Risk ODSK -42i - ODSK -42Ai - ODSK -42Ai 524.7 40.9 524.7 31.2 525.0 4.213 Centre Distance Pass - Major Risk ODSK -42i - ODSK -42Ai - ODSK -42Ai 599.2 41.4 599.2 30.4 600.0 3.761 Clearance Factor Pass - Major Risk 05 February, 2010 - 12:25 Page 2 of 8 COMPASS Well Planning - Pioneer - Oooguruk HALLIBURTON Oooguruk Development Anticollision Report for ODSN -21 - ODSN -21 PS13 wp04 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Scan Range: 42.7 to 1,900.0 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft ODSK -42i - ODSK -42i KupG - ODSK -42i KupG 524.7 40.9 524.7 31.2 525.0 4.213 Centre Distance Pass - Major Risk ODSK -42i - ODSK -42i KupG - ODSK -42i KupG 599.2 41.4 599.2 30.4 600.0 3.761 Clearance Factor Pass - Major Risk • ODSN -1 - ODSN -1 - ODSN -1 NE3 wp01 300.0 173.0 300.0 167.3 300.0 30.600 Centre Distance Pass - Major Risk ODSN -1 - ODSN -1 - ODSN -1 NE3 wp01 400.0 173.9 400.0 166.4 400.0 23.176 Clearance Factor Pass - Major Risk ODSN -10 - ODSN -10 PS12 - ODSN -10 PS12 wp11 - 6 500.0 99.0 500.0 89.6 500.0 10.561 Centre Distance Pass - Major Risk ODSN -10 - ODSN -10 PS12 - ODSN -10 PS12 wp11 - 6 673.1 100.4 673.1 88.0 675.0 8.123 Clearance Factor Pass - Major Risk ODSN -11i - ODSN -11i IS11 - ODSN -11i IS11 wp09 549.5 91.4 549.5 81.3 550.0 9.051 Centre Distance Pass - Major Risk ODSN -11i - ODSN -11i IS11 - ODSN -11i IS11 wp09 722.8 93.0 722.8 79.8 725.0 7.057 Clearance Factor Pass - Major Risk ODSN -12 - ODSN -12 PS10 - ODSN -12 PS10 wp13 - 8 524.8 84.8 524.8 75.1 525.0 8.709 Centre Distance Pass - Major Risk ODSN -12 - ODSN -12 PS10 - ODSN -12 PS10 wp13 - 8 722.9 86.4 722.9 73.3 725.0 6.564 Clearance Factor Pass - Major Risk ODSN -15 - ODSN -15 PN11 - ODSN -15 PN11 wp02 524.8 52.8 524.8 43.1 525.0 5.401 Centre Distance Pass - Major Risk ODSN -15 - ODSN -15 PN11 - ODSN -15 PN11 wp02 723.7 54.6 723.7 41.4 725.0 4.128 Clearance Factor Pass - Major Risk ODSN -16i - ODSN -16i IN12 - ODSN -16i IN12 wp01 500.0 46.0 500.0 36.6 500.0 4.900 Centre Distance Pass - Major Risk ODSN -16i - ODSN -16i IN12 - ODSN -16i IN12 wp01 748.7 48.1 748.7 34.5 750.0 3.527 Clearance Factor Pass - Major Risk ODSN -17 - ODSN -17 PN13 - ODSN -17 PN13 wp01 649.4 36.8 649.4 24.9 650.0 3.098 Centre Distance Pass - Major Risk ODSN -17 - ODSN -17 PN13 - ODSN -17 PN13 wp01 873.6 38.8 873.6 22.7 875.0 2.416 Clearance Factor Pass - Major Risk ODSN -19 - ODSN -19i SW3 - ODSN -19i SW3 wp01 599.8 11.7 599.8 6.2 600.0 2.140 Centre Distance Pass - Minor Risk 1/200 ODSN -19 - ODSN -19i SW3 - ODSN -19i SW3 wp01 649.8 11.8 649.8 6.0 650.0 2.030 Clearance Factor Pass - Minor Risk 1/200 ODSN -2 - ODSN -2 PS1 - ODSN -2 PS1 wp08 400.0 166.0 400.0 158.5 400.0 22.067 Centre Distance Pass - Major Risk • ODSN -2 - ODSN -2 PS1 - ODSN -2 PS1 wp08 500.0 166.9 500.0 157.5 500.0 17.809 Clearance Factor Pass - Major Risk ODSN -22i - ODSN -22i IS14 - ODSN -22i IS14 wp02 300.0 7.0 300.0 4.8 300.0 3.145 Centre Distance Pass - Minor Risk 1/10 ODSN -22i - ODSN -22i IS14 - ODSN -22i IS14 wp02 325.0 7.0 325.0 4.7 325.0 3.043 Clearance Factor Pass - Minor Risk 1/10 ODSN -23i - ODSN -23i IS16 - ODSN -23i IS16 wp02 300.0 14.0 300.0 11.3 300.0 5.182 Centre Distance Pass - Minor Risk 1/200 ODSN -23i - ODSN -23i IS16 - ODSN -23i IS16 wp02 350.0 14.2 350.0 11.2 350.0 4.754 Clearance Factor Pass - Minor Risk 1/200 ODSN -25 - ODSN -25 - ODSN -25 NE4 wp02 298.7 176.1 298.7 170.4 300.0 31.261 Centre Distance Pass - Major Risk ODSN -25 - ODSN -25 - ODSN -25 NE4 wp02 423.7 177.2 423.7 169.4 425.0 22.553 Clearance Factor Pass - Major Risk ODSN -26 - ODSN -26 PN1 - ODSN -26 PN1 wp06 400.0 169.2 400.0 161.6 400.0 22.489 Centre Distance Pass - Major Risk ODSN -26 - ODSN -26 PN1 - ODSN -26 PN1 wp06 500.0 170.0 500.0 160.7 500.0 18.169 Clearance Factor Pass - Major Risk ODSN -27i - ODSN -27i IN2 - ODSN -27i IN2 wp06 500.0 162.3 500.0 .152.9 500.0 17.280 Centre Distance Pass - Major Risk 1 ODSN -27i - ODSN -27i IN2 - ODSN -27i IN2 wp06 548.9 162.7 548.9 152.4 550.0 15.876 Clearance Factor Pass - Major Risk 05 February, 2010 - 12:25 Page 3 of 8 COMPASS Well Planning - Pioneer - Oooguruk HALLIBURTON Oooguruk Development Anticollision Report for ODSN -21 - ODSN -21 PS13 wp04 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Scan Range: 42.7 to 1,900.0 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft ODSN -28 - ODSN -28 PN3 - ODSN -28 PN3 wp07.a 300.0 155.5 300.0 149.8 300.0 27.500 Centre Distance Pass - Major Risk ODSN -28 - ODSN -28 PN3 - ODSN -28 PN3 wp07.a 425.0 156.5 425.0 148.7 425.0 19.921 Clearance Factor Pass - Major Risk • ODSN -29i - ODSN -29i IN4 - ODSN -29i IN4 wp06 400.0 148.7 400.0 141.1 400.0 19.762 Centre Distance Pass - Major Risk ODSN -29i - ODSN -29i IN4 - ODSN -29i IN4 wp06 500.0 149.4 500.0 140.1 500.0 16.068 Clearance Factor Pass - Major Risk ODSN -30 - ODSN -30 PN5 - ODSN -30 PN5 wp05 500.0 141.8 500.0 132.4 500.0 15.101 Centre Distance Pass - Major Risk ODSN -30 - ODSN -30 PN5 - ODSN -30 PN5 wp05 573.5 142.5 573.5 131.9 575.0 13.425 Clearance Factor Pass - Major Risk ODSN -31 - ODSN -31 - ODSN -31 PN6 Surveys 325.0 124.2 325.0 118.1 325.0 20.581 Centre Distance Pass - Major Risk ODSN -31 - ODSN -31 - ODSN -31 PN6 Surveys 500.0 125.6 500.0 116.6 500.0 14.003 Clearance Factor Pass - Major Risk ODSN -31 - ODSN -31 PB1 - ODSN-31PB1 PN6 Survey 325.0 124.2 325.0 118.1 325.0 20.581 Centre Distance Pass - Major Risk ODSN -31 - ODSN -31 PB1 - ODSN -31 PB1 PN6 Survey 500.0 125.6 500.0 116.6 500.0 14.003 Clearance Factor Pass - Major Risk ODSN -32i - ODSN -32i IN7 - ODSN -32i IN7 Surveys 499.9 116.4 499.9 107.3 500.0 12.759 Centre Distance Pass - Major Risk ODSN -32i - ODSN -32i IN7 - ODSN -32i IN7 Surveys 573.5 117.1 573.5 106.7 575.0 11.208 Clearance Factor Pass - Major Risk ODSN -32i - ODSN- 32iPB1 IN7 - ODSN- 32iPB1 IN7 499.9 116.4 499.9 107.3 500.0 12.759 Centre Distance Pass - Major Risk ODSN -32i - ODSN- 32iPB1 IN7 - ODSN- 32iPB1 IN7 573.5 117.1 573.5 106.7 575.0 11.208 Clearance Factor Pass - Major Risk ODSN -34i - ODSN -34 IN9 - ODSN -34i IN9 Surveys 350.0 102.9 350.0 96.5 350.0 16.003 Centre Distance Pass - Major Risk ODSN -34i - ODSN -34 IN9 - ODSN -34i IN9 Surveys 549.2 104.4 549.2 94.7 550.0 10.737 Clearance Factor Pass - Major Risk ODSN -34i - ODSN -34i PB2 - ODSN- 34iPB2 IN9 350.0 102.9 350.0 96.5 350.0 16.003 Centre Distance Pass - Major Risk ODSN -34i - ODSN -34i PB2 - ODSN- 34iPB2 IN9 549.2 104.4 549.2 94.7 550.0 10.737 Clearance Factor Pass - Major Risk ODSN -34i - ODSN -34i PB3 - ODSN- 34iPB3 IN9 350.0 102.9 350.0 96.5 350.0 16.003 Centre Distance Pass - Major Risk • ODSN -34i - ODSN -34i PB3 - ODSN- 34iPB3 IN9 549.2 104.4 549.2 94.7 550.0 10.737 Clearance Factor Pass - Major Risk ODSN -34i - ODSN- 34iPB1 - ODSN- 34iPB1 IN9 350.0 102.9 350.0 96.5 350.0 16.003 Centre Distance Pass - Major Risk ODSN -34i - ODSN- 34iPB1 - ODSN- 34iPB1 IN9 549.2 104.4 549.2 94.7 550.0 10.737 Clearance Factor Pass - Major Risk ODSN -36 - ODSN -36 PB1 - ODSN -36 PB1 PN10 100.0 91.1 100.0 89.2 100.0 49.830 Centre Distance Pass - Major Risk ODSN -36 - ODSN -36 PB1 - ODSN -36 PB1 PN10 425.0 92.6 425.0 85.3 425.0 12.658 Clearance Factor Pass - Major Risk ODSN -36 - ODSN -36 PB2 - ODSN -36 PB2 PN10 100.0 91.1 100.0 89.2 100.0 49.830 Centre Distance Pass - Major Risk ODSN -36 - ODSN -36 PB2 - ODSN -36 PB2 PN10 425.0 92.6 425.0 85.3 425.0 12.658 Clearance Factor Pass - Major Risk ODSN -36 - ODSN -36 PN10 - ODSN -36 PN10 Surveys 100.0 91.1 100.0 89.2 100.0 49.830 Centre Distance Pass - Major Risk ODSN -36 - ODSN -36 PN10 - ODSN -36 PN10 Surveys 425.0 92.6 425.0 85.3 425.0 12.658 Clearance Factor Pass - Major Risk ODSN -37 - ODSN -37 - ODSN -37 PN8 400.0 73.0 400.0 65.8 400.0 10.049 Centre Distance Pass - Major Risk ODSN -37 - ODSN -37 - ODSN -37 PN8 524.7 73.7 524.7 64.4 525.0 7.905 Clearance Factor Pass - Major Risk 05 February, 2010 - 12:25 Page 4 of 8 COMPASS Well Planning - Pioneer - Oooguruk HALLIBURTON Oooguruk Development Anticollision Report for ODSN -21 - ODSN -21 PS13 wp04 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Scan Range: 42.7 to 1,900.0 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft ODSN -39i - ODSN -39i IN11 - ODSN -39i IN11 350.0 61.4 350.0 55.0 350.0 9.533 Centre Distance Pass - Major Risk ODSN -39i - ODSN -39i IN11 - ODSN -39i IN11 524.6 62.4 524.6 52.7 525.0 6.437 Clearance Factor Pass - Major Risk ODSN -3i - ODSN -3i 1S2 - ODSN -3i IS2 wp08 500.0 159.0 500.0 149.6 500.0 16.931 Centre Distance Pass - Major Risk • ODSN -3i - ODSN -3i 1S2 - ODSN -3i IS2 wp08 573.7 159.7 573.7 149.0 575.0 14.922 Clearance Factor Pass - Major Risk ODSN -4 - ODSN -4 PS3 - ODSN -4 PS3 wp07 300.0 152.0 300.0 146.4 300.0 26.893 Centre Distance Pass - Major Risk ODSN -4 - ODSN -4 PS3 - ODSN -4 PS3 wp07 500.0 153.8 500.0 144.4 500.0 16.386 Clearance Factor Pass - Major Risk ODSN -40 - ODSN -40 PN12 - ODSN -40 PN12 Surveys 348.7 55.1 348.7 48.6 350.0 8.505 Centre Distance Pass - Major Risk ODSN -40 - ODSN -40 PN12 - ODSN -40 PN12 Surveys 423.6 55.7 423.6 47.8 425.0 7.093 Clearance Factor Pass - Major Risk ODSN -40 - ODSN -40PB1 PN12 - ODSN -40PB1 PN12 348.7 55.1 348.7 48.7 350.0 8.623 Centre Distance Pass - Major Risk ODSN -40 - ODSN -40PB1 PN12 - ODSN -40PB1 PN12 423.6 55.7 423.6 47.9 425.0 7.174 Clearance Factor Pass - Major Risk ODSN -40 - ODSN -40PB2 PN12 - ODSN -40PB2 PN12 348.7 55.1 348.7 48.6 350.0 8.505 Centre Distance Pass - Major Risk ODSN -40 - ODSN -40PB2 PN12 - ODSN -40PB2 PN12 423.6 55.7 423.6 47.8 425.0 7.093 Clearance Factor Pass - Major Risk ODSN -43 - ODSN -43 PS13 mid - ODSN -43 PS13 mid 300.0 35.6 300.0 29.9 300.0 6.292 Centre Distance Pass - Major Risk ODSN -43 - ODSN -43 PS13 mid - ODSN -43 PS13 mid 524.8 37.1 524.8 27.8 525.0 3.972 Clearance Factor Pass - Major Risk ODSN -45 - ODSN -45A - ODSN -45A Surveys 42.7 32.7 42.7 31.6 42.7 29.881 Centre Distance Pass - Major Risk ODSN -45 - ODSN -45A - ODSN -45A Surveys 400.0 35.9 400.0 28.2 400.0 4.714 Clearance Factor Pass - Major Risk ODSN -45 - ODSN -45i PB1 1N13 - ODSN -45i PB1 IN13 42.7 32.7 42.7 31.6 42.7 29.881 Centre Distance Pass - Major Risk ODSN -45 - ODSN -45i PB1 1N13 - ODSN -45i PB1 IN13 400.0 35.9 400.0 28.2 400.0 4.714 Clearance Factor Pass - Major Risk Major Risk ODSN -46 - ODSN -46 PS15 - ODSN -46 PS15 wp02 300.0 33.5 300.0 27.8 300.0 5.918 Centre Distance Pass - 1 ODSN -46 - ODSN -46 PS15 - ODSN -46 PS15 wp02 425.0 34.5 425.0 26.7 425.0 4.454 Clearance Factor Pass - Major Risk ODSN -47 - ODSN -47i IN14 - ODSN -47i 1N14 wp02 300.0 35.6 300.0 30.0 300.0 6.303 Centre Distance Pass - Major Risk ODSN -47 - ODSN -47i IN14 - ODSN -47i 1N14 wp02 425.0 36.7 425.0 28.9 425.0 4.734 Clearance Factor Pass - Major Risk ODSN -48 - ODSN -48i 1N14 - ODSN -48 1N14 wp01 300.0 38.9 300.0 33.2 300.0 6.878 Centre Distance Pass - Major Risk ODSN -48 - ODSN -48i 1N14 - ODSN -48 1N14 wp01 425.0 39.9 425.0 32.1 425.0 5.145 Clearance Factor Pass - Major Risk ODSN -5i - ODSN -5i 1S4 - ODSN -5i IS4 wp08 400.0 145.0 400.0 137.5 400.0 19.277 Centre Distance Pass - Major Risk ODSN -5i - ODSN -5i 1S4 - ODSN -5i 1S4 wp08 549.2 146.1 549.2 135.9 550.0 14.233 Clearance Factor Pass - Major Risk ODSN -6 - ODSN -6 PS5 - ODSN -6 PS5 wp09 300.0 138.0 300.0 132.4 300.0 24.413 Centre Distance Pass - Major Risk ODSN -6 - ODSN -6 PS5 - ODSN -6 PS5 wp09 524.6 139.7 524.6 129.8 525.0 14.224 Clearance Factor Pass - Major Risk ODSN -7i - ODSN -7i 1S7 - ODSN -7i IS7 wp08 500.0 120.0 500.0 106.8 500.0 9.094 Centre Distance Pass - Major Risk ODSN -7i - ODSN -7i 1S7 - ODSN -7i IS7 wp08 721.9 122.8 721.9 103.7 725.0 6.412 Clearance Factor Pass - Major Risk 05 February, 2010 - 12:25 Page 5 of 8 COMPASS Well Planning - Pioneer - Oooguruk HALLIBURTON Oooguruk Development Anticollision Report for ODSN -21 - ODSN -21 PS13 wp04 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Scan Range: 42.7 to 1,900.0 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft ODSN -8 - ODSN -8 PS8 - ODSN -8 PS8 wp08 - 8K' Hor 398.7 113.0 398.7 105.6 400.0 15.246 Centre Distance Pass - Major Risk Aft ODSN -8 - ODSN -8 PS8 - ODSN -8 PS8 wp08 - 8K' Hor 572.8 114.2 572.8 103.6 575.0 10.782 Clearance Factor Pass - Major Risk ODSN -9i - ODSN -9i IS9 - ODSN -9i IS9 wp11 - 8K' Hori 298.7 106.0 298.7 99.9 300.0 17.360 Centre Distance Pass - Major Risk ODSN -9i - ODSN -9i IS9 - ODSN -9i IS9 wp11 - 8K' Hori 646.9 107.7 646.9 94.3 650.0 8.070 Clearance Factor Pass - Major Risk Survey tool program From To Survey /Plan Survey Tool (ft) (ft) 42.7 1,900.0 ODSN -21 PS13wp04 SR- Gyro-SS 1,900.0 17,616.7 ODSN -21 PS13 wp04 MWD +IFR2 +MS +sag Ellipse error terms are correlated across survey tool tie -on points. Calculated ellipses incorporate surface errors. Separation is the actual distance between ellipsoids. Distance Between centres is the straight line distance between wellbore centres. Clearance Factor = Distance Between Profiles / (Distance Between Profiles - Ellipse Separation). All station coordinates were calculated using the Minimum Curvature method. 05 February, 2010 - 12:25 Page 6 of 8 COMPASS Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN -21 ODSN -21 PS13 ODSN -21 PS13 wp04 • F Sperry Drilling Services Clearance Summary Anticollision Report 05 February, 2010 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Well Coordinates: 6,031,028.53 N, 469,798.62 E (70° 29' 45.03" N, 150° 14' 49.04" W) • Datum Height: 42.7' + 13.5' @ 56.2ft (Nabors 19AC) Scan Range: 1,900.0 to 17,616.7 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Geodetic Scale Factor Applied Version: 2003.16 Build: 42B Scan Type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference Scan Type: 25.00 HALLIBURTON Sperry Drilling Services REFERENCE INFORMATION A NTI-COLLISION SETTINGS SURVEY PROGRAM Coordinate (N/E) Reference: well ODSN - 21 - Slot ODS - 21, True North Interpolation Method: MD, interval: 25.0 Date: 2010 -02-05T00:00:00 Validated: Yes Version: Vertical (TVD) Reference: 42.7' + 13.5' @ 56.211 (Nabors 19AC) Depth Range From: 1900.0 To 17616.7 Section (VS) Reference: Slot - ODS-21(0.0N, 0.0E) Depth Snrve IPlen Tool Measured Depth Reference: 42.7'+ 13.5', Depth From 56.211 (Nabors 19AC) Results Limited By: Centre Distance: 1957.4 Pth To Survey /Plan Method: Minimum Curvature Reference: Plan: ODSN -21 PS13 wp04 (O /ODSN -21 PS13) 42.7 1900.0 ODSN -21 PS13 wp04 SR-Gyro-SS Scan Type: GLOBAL FILTER APPLIED: All 1 welly wellpaths within 200'* 100/1000 of reference 1900.0 17616.7 ODSN -21 PS13 wp04 MWDHFR2 FR2 *MS*sag ODSK -14 Ku `ODSK -14 KupBI N I � rODSN -16 P ODSN -77 PN13 \ 1l � ` \� . �. 33 9494 �� , i l � � !i j 1 1 1 • , �,�; � , ,�� ��llll'1► 1 ,DDSKJ3KMpAI � 94 94 �N, A.,- 15 �, • \ 300 \ 60 ODSN- 19iSW3� 30011 7 � � �� i)))0),!.,!/,■(.....?.,./ _ _ I ,1 �� ��\ / � 10 \ � ' l 1 kg4 01,11,1\ I, ■ " q � ► ►9494,, ` , 4. , � i( 1)10 l •• :.1.7.7-- ` � t ..• ;9494. ij I �� 4 ili:iiliki•Li ' t 11.- A .. t. �J,� n�a , e , e m , 1..0 / :90 ' iLliiir,. 270 ___r ,s,- / g + +\ \ \\ i10 240 120 _ 15 25 fr 180 24 I 118\\)) I � // Travelling Cylinder Azimuth (TFO+AZI) ]?] vs Centre to Centre Separation ]5 ft/in] -« 000112 00612 �0'�� 1 � - °�i �r l 1 'i Ok I �� t 'I / I11I ' 120 k n. 1uo accnax na 1.. ve.. • 1 , it \\ I 1 ///�� /.Itl, "," 0 .°" Fran aded 70.113 ' \ \ , � ss /� /rfhl. / 00 Oh 5000 000 000 60.0 O. 00 000 010 0.0 2 ' '' ® m -750 ODSN 23i1S1 ' �� ��l � •a l � •ss,I? /4i yw - .d.::: !l. • ji /II '� 1011, ... WS.. ODSM.J6 PB2 00S1.36 9,1, MO VO aur; f' /IIIl y i 9773.3 82 6 1.6 636.3 -304. .37940 3.00 431 24142 .00.7 8254 1496 62788 -366 6209 0 00 0.00 37MB 10369.1 90 00 1.23 6296 2 -4155. .6.1 3 00 633 6373 0313 3313 260 22oo .!iLp 4/ /sa,i., 5p 0136.3662.6 80 211 ' i,� s� //l ii l, 3451 115.6 0 940 144.61 62761 .5167 63029 OM POO .0.7 o..NTOETALa. WWI P.,.w.a0 90- 00066. r 4:i ,� / fl t i uh ,r p.,0 - -6 01.,10. COSH., PX12.005,14,12,x.,VO U 12432.4 90.00 WS 80 6271.2 655 619.1 30 407.53 5761 .,...pm,....,,, .m...c-... ▪ �a 0 005x-10P8110.112 �a e, aw N ,91,6., - +m6.,ae� 100 MUm�..aa6,�613w 94,3 636.3 62 a91 a.3 -° wma cna,. Moan 180 . a , w 1451 dd., - 28 13364.4 66.00 1.0 6362 6 owu33x 0.16..60 - 1 Travelling Cylinder Azimuth (TFO+AZn ( ?] vs Centre to Centre Separation 125 ft/inl 13331 1194 oaez,,m3.p.lam,0lnn ooas,a 32 147314 00.. 1466 6354.9 -774d 401711 000 OM 7872.6 up. .0 6 1.01.0 94.00 14.5.49 6350 2 656 66/ 3.00 426 7761 ouzo Imo er aer Om o0•. m 1131,P.a,ry 051010 NA0 2749F Zoos 4: WELL OETAIS: ODSN -N 13451 - dl..aa: Ground Level: 13.5 i..0d m. +W S. ♦EI Northi Eas5ng 1a ng 010,de Longitude Slot � - - a amnia. om9L0.Omw97 .511 61116.330 61116.330 p ,30110 36 157626 90 0 145 54 62901 466. .7 3 00 179.04 9563 m 0.0 0.0 3031028.53 0.1799.02 TO° 2r td' 45.0]9 N 150° 49.0% W 0135-21 PPP* S -21 40 ,1154 7 9444 135.52 64002 de. 911.5 000 0.00 10140.6 rs130711 Well Planning - Pioneer - Oooguruk HALLIBURTON Oooguruk Development Anticollision Report for ODSN -21 - ODSN -21 PS13 wp04 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Scan Range: 1,900.0 to 17,616.7 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft Ooguruk Offset Wells Kalubik #1 - Kalubik #1 - Kalubik #1 6,115.3 537.4 6,115.3 391.4 4,475.0 3.679 Centre Distance Pass - Major Risk • Kalubik #1 - Kalubik #1 - Kalubik #1 6,129.2 537.6 6,129.2 391.1 4,500.0 3.669 Clearance Factor Pass - Major Risk Oooguruk Drill Site ODSDWI -44 - ODSDWI -44 Disposal - ODSDW1 -44 C 1,905.3 272.9 1,905.3 240.1 1,975.0 8.300 Clearance Factor Pass - Major Risk ODSDW2 -20 - ODSDW2 -20 Disposal - ODSDW2 -20 C 1,908.0 432.0 1,908.0 399.3 2,050.0 13.223 Clearance Factor Pass - Major Risk ODSK -13i - ODSK -13i KupH - ODSK -13i KupH 1,900.0 271.6 1,900.0 228.4 1,925.0 6.283 Clearance Factor Pass - Major Risk ODSK -14 - ODSK -14 KupB - ODSK -14 KupB wp04.b 1,922.6 175.6 1,922.6 132.0 1,925.0 4.030 Clearance Factor Pass - Major Risk ODSK -14 - ODSK -14 KupB - ODSK -14 KupB 1,918.2 188.1 1,918.2 144.3 1,925.0 4.297 Clearance Factor Pass - Major Risk ODSK -14 - ODSK -14 PB1 KupB - ODSK -14 PB1 KupE 1,918.2 188.1 1,918.2 144.3 1,925.0 4.297 Clearance Factor Pass - Major Risk ODSK -33 - ODSK -33 KupA - ODSK -33 KupA 1,912.0 133.6 1,912.0 96.0 1,950.0 3.558 Clearance Factor Pass - Major Risk ODSK -33 - ODSK -33 PB1 KupA - ODSK -33 PB1 KupA 1,912.0 133.6 1,912.0 96.0 1,950.0 3.558 Clearance Factor Pass - Major Risk ODSK -35i - ODSK -35 KupB - ODSK -35 KupB Surveys 1,909.8 241.9 1,909.8 209.8 1,975.0 7.525 Clearance Factor Pass - Major Risk ODSK -35i - ODSK -35i KupH - ODSK -35i KupH wp06 1,909.8 241.9 1,909.8 209.8 1,975.0 7.525 Clearance Factor Pass - Major Risk ODSK -38i - ODSK -38i KupD - ODSK -38i KupD Survey: 1,914.2 487.9 1,914.2 454.9 2,075.0 14.786 Clearance Factor Pass - Major Risk ODSK -41 - ODSK -41 KupF - ODSK -41 KupF Surveys 1,900.0 467.9 1,900.0 433.3 2,050.0 13.501 Clearance Factor Pass - Major Risk ODSK -41 - ODSK -41 PB1 KupF - ODSK -41 PB1 KupF 1,900.0 467.9 1,900.0 433.3 2,050.0 13.502 Clearance Factor Pass - Major Risk ODSK -42i - ODSK -42Ai - ODSK -42Ai 1,910.7 444.3 1,910.7 407.0 2,050.0 11.902 Clearance Factor Pass - Major Risk ODSK -42i - ODSK -42i KupG - ODSK -42i KupG 1,910.7 444.3 1,910.7 407.0 2,050.0 11.902 Clearance Factor Pass - Major Risk ODSN -1 - ODSN -1 - ODSN -1 NE3 wp01 1,900.0 798.0 1,900.0 760.3 2,175.0 21.160 Clearance Factor Pass - Major Risk ODSN -10 - ODSN -10 PS12 - ODSN -10 PS12 wpl 1 - 6 1,915.9 268.7 1,915.9 231.1 1,975.0 7.134 Clearance Factor Pass - Major Risk ODSN -11i - ODSN -11i IS11 - ODSN -11i IS11 wp09 1,900.0 226.7 1,900.0 176.7 1,925.0 4.537 Clearance Factor Pass - Major Risk ODSN -12 - ODSN -12 PS10 - ODSN -12 PS10 wp13 - f 1,921.6 212.5 1,921.6 163.1 1,950.0 4.300 Clearance Factor Pass - Major Risk ODSN -15 - ODSN -15 PN11 - ODSN -15 PN11 wp02 1,903.1 176.0 1,903.1 124.0 1,925.0 3.381 Clearance Factor Pass - Major Risk ODSN -16i - ODSN -16i IN12 - ODSN -16i IN12 wp01 1,902.6 143.5 1,902.6 102.0 1,925.0 3.455 Clearance Factor Pass - Major Risk ODSN -17 - ODSN -17 PN13 - ODSN -17 PN13 wp01 1,922.0 100.6 1,922.0 46.5 1,925.0 1.857 Clearance Factor Pass - Major Risk ODSN -19 - ODSN -19i SW3 - ODSN -19i SW3 wp01 1,914.4 137.8 1,914.4 96.8 1,900.0 3.359 Clearance Factor Pass - Major Risk ODSN -2 - ODSN -2 PS1 - ODSN -2 PS1 wp08 1,911.7 722.9 1,911.7 684.4 2,150.0 18.785 Clearance Factor Pass - Major Risk 05 February, 2010 - 13:29 Page 2 of 6 COMPASS Well Planning - Pioneer - Oooguruk HALLIBURTON Oooguruk Development Anticollision Report for ODSN -21 - ODSN -21 PS13 wp04 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Scan Range: 1,900.0 to 17,616.7 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft ODSN - 22i - ODSN - 22i IS14 - ODSN - 22i IS14 wp02 1,905.1 75.8 1,905.1 24.4 1,900.0 1.474 Clearance Factor Pass - M*r Risk ODSN -23i - ODSN -23i IS16 - ODSN -23i IS16 wp02 1,913.7 128.9 1,913.7 84.4 1,900.0 2.894 Clearance Factor Pass - Major Risk ODSN -25 - ODSN -25 - ODSN -25 NE4 wp02 1,905.4 939.4 1,905.4 904.6 2,300.0 26.969 Clearance Factor Pass - Major Risk • ODSN -26 - ODSN -26 PN1 - ODSN -26 PN1 wp06 1,900.0 769.7 1,900.0 732.7 2,175.0 20.799 Clearance Factor Pass - Major Risk ODSN -27i - ODSN -27i IN2 - ODSN -27i IN2 wp06 1,908.0 700.8 1,908.0 665.2 2,150.0 19.666 Clearance Factor Pass - Major Risk ODSN -28 - ODSN -28 PN3 - ODSN -28 PN3 wp07.a 1,900.0 856.7 1,900.0 820.6 2,250.0 23.734 Clearance Factor Pass - Major Risk ODSN -29i - ODSN -29i IN4 - ODSN -29i IN4 wp06 1,906.8 684.9 1,906.8 650.8 2,150.0 20.109 Clearance Factor Pass - Major Risk ODSN -30 - ODSN -30 PN5 - ODSN -30 PN5 wp05 1,907.0 705.7 1,907.0 672.0 2,175.0 20.918 Clearance Factor Pass - Major Risk ODSN -31 - ODSN -31 - ODSN -31 PN6 Surveys 1,908.1 703.7 1,908.1 669.8 2,175.0 20.701 Clearance Factor Pass - Major Risk ODSN -31 - ODSN -31 PB1 - ODSN -31 PB1 PN6 Survey 1,908.1 703.7 1,908.1 669.8 2,175.0 20.701 Clearance Factor Pass - Major Risk ODSN -32i - ODSN -32i IN7 - ODSN -32i IN7 Surveys 1,905.9 565.2 1,905.9 530.9 2,100.0 16.459 Clearance Factor Pass - Major Risk ODSN -32i - ODSN- 32iPB1 IN7 - ODSN- 32iPB1 IN7 1,905.9 565.2 1,905.9 530.9 2,100.0 16.459 Clearance Factor Pass - Major Risk ODSN -34i - ODSN -34 IN9 - ODSN -34i IN9 Surveys 1,910.8 679.7 1,910.8 645.7 2,175.0 19.972 Clearance Factor Pass - Major Risk ODSN -34i - ODSN -34i PB2 - ODSN- 34iPB2 IN9 1,910.8 679.7 1,910.8 645.7 2,175.0 19.972 Clearance Factor Pass - Major Risk ODSN -34i - ODSN -34i PB3 - ODSN- 34iPB3 IN9 1,910.8 679.7 1,910.8 645.7 2,175.0 19.972 Clearance Factor Pass - Major Risk ODSN -34i - ODSN- 34iPB1 - ODSN- 34iPB1 IN9 1,910.8 679.7 1,910.8 645.7 2,175.0 19.972 Clearance Factor Pass - Major Risk ODSN -36 - ODSN -36 PB1 - ODSN -36 PB1 PN10 1,907.8 1,069.5 1,907.8 1,031.9 2,450.0 28.443 Clearance Factor Pass - Major Risk ODSN -36 - ODSN -36 PB2 - ODSN -36 PB2 PN10 1,907.8 1,069.5 1,907.8 1,031.9 2,450.0 28.444 Clearance Factor Pass - Major Risk ODSN -36 - ODSN -36 PN10 - ODSN -36 PN10 Surveys 1,907.8 1,069.5 1,907.8 1,031.9 2,450.0 28.443 Centre Distance Pass - Major Risk • ODSN -36 - ODSN -36 PN10 - ODSN -36 PN10 Surveys 7,762.2 1,166.1 7,762.2 991.0 12,200.0 6.661 Clearance Factor Pass - Major Risk ODSN -37 - ODSN -37 - ODSN -37 PN8 1,908.5 597.8 1,908.5 562.5 2,125.0 16.894 Clearance Factor Pass - Major Risk ODSN -39i - ODSN -39i IN11 - ODSN - 39i IN11 1,910.1 591.8 1,910.1 554.6 2,125.0 15.916 Clearance Factor Pass - Major Risk ODSN -3i - ODSN -3i IS2 - ODSN -3i IS2 wp08 1,903.3 599.8 1,903.3 560.3 2,075.0 15.168 Clearance Factor Pass - Major Risk ODSN -4 - ODSN -4 PS3 - ODSN -4 PS3 wp07 1,917.4 492.9 1,917.4 448.7 2,025.0 11.164 Clearance Factor Pass - Major Risk ODSN -40 - ODSN -40 PN12 - ODSN -40 PN12 Surveys 11,163.0 622.2 11,163.0 513.0 9,275.0 5.700 Centre Distance Pass - Major Risk ODSN -40 - ODSN -40 PN12 - ODSN -40 PN12 Surveys 11,150.3 624.5 11,150.3 510.9 9,325.0 5.500 Clearance Factor Pass - Major Risk ODSN -40 - ODSN -40PB1 PN12 - ODSN -40PB1 PN12 1,911.2 644.5 1,911.2 608.3 2,150.0 17.806 Clearance Factor Pass - Major Risk ODSN -40 - ODSN -40PB2 PN12 - ODSN -40PB2 PN12 11,163.0 622.2 11,163.0 513.0 9,275.0 5.700 Centre Distance Pass - Major Risk ODSN -40 - ODSN -40PB2 PN12 - ODSN -40PB2 PN12 11,150.3 624.5 11,150.3 510.9 9,325.0 5.500 Clearance Factor Pass - Major Risk ODSN -43 - ODSN -43 PS13 mid - ODSN -43 PS13 midi 1,903.0 450.2 1,903.0 408.6 2,025.0 10.811 Clearance Factor Pass - Major Risk 05 February, 2010 - 13:29 Page 3 of 6 COMPASS Well Planning - Pioneer - Oooguruk HALLIBURTON Oooguruk Development Anticollision Report for ODSN -21 - ODSN -21 PS13 wp04 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: Oooguruk Drill Site - ODSN -21 - ODSN -21 PS13 - ODSN -21 PS13 wp04 Scan Range: 1,900.0 to 17,616.7 ft. Measured Depth. Scan Radius is 1,957.4 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft ODSN -45 - ODSN -45A - ODSN -45A Surveys 1,915.2 469.5 1,915.2 431.5 2,050.0 12.343 Clearance Factor Pass - Major Risk ODSN -45 - ODSN -45i PB1 IN13 - ODSN -45i PB1 IN13 1,915.2 469.5 1,915.2 431.5 2,050.0 12.341 Clearance Factor Pass - Major Risk • ODSN -46 - ODSN -46 PS15 - ODSN -46 PS15 wp02 1,909.2 460.6 1,909.2 419.2 2,025.0 11.127 Clearance Factor Pass - Major Risk ODSN -47 - ODSN -47i IN14 - ODSN -47i IN14 wp02 1,918.0 389.9 1,918.0 339.5 2,000.0 7.740 Clearance Factor Pass - Major Risk ODSN -48 - ODSN -48i IN14 - ODSN -48 IN14 wp01 1,914.1 360.5 1,914.1 317.9 1,975.0 8.458 Clearance Factor Pass - Major Risk ODSN -5i - ODSN -5i IS4 - ODSN -5i IS4 wp08 1,906.5 429.4 1,906.5 389.5 2,000.0 10.767 Clearance Factor Pass - Major Risk ODSN -6 - ODSN -6 PS5 - ODSN -6 PS5 wp09 1,915.9 454.1 1,915.9 410.2 2,000.0 10.357 Clearance Factor Pass - Major Risk ODSN -7i - ODSN -7i IS7 - ODSN -7i IS7 wp08 1,905.4 355.0 1,905.4 311.9 2,000.0 8.227 Clearance Factor Pass - Major Risk ODSN -8 - ODSN -8 PS8 - ODSN -8 PS8 wp08 - 8K' Hor 1,905.8 359.1 1,905.8 312.7 1,975.0 7.735 Clearance Factor Pass - Major Risk ODSN -9i - ODSN -9i IS9 - ODSN -9i IS9 wp11 - 8K' Hori 1,909.1 288.2 1,909.1 239.9 1,950.0 5.972 Clearance Factor Pass - Major Risk Survey tool program From To Survey /Plan Survey Tool (ft) (ft) 42.7 1,900.0 ODSN -21 PS13 wp04 SR- Gyro-SS • 1,900.0 17,616.7 ODSN -21 PS13wp04 MWD +IFR2 +MS +sag Ellipse error terms are correlated across survey tool tie -on points. Calculated ellipses incorporate surface errors. Separation is the actual distance between ellipsoids. Distance Between centres is the straight line distance between wellbore centres. Clearance Factor = Distance Between Profiles / (Distance Between Profiles - Ellipse Separation). 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' r ' 0341 , I pv0.3 .466 i • - Effiro . ...._. UO '1/466 1111111111.12, : 3 -.41111111111 . . I 61 : I ■ ■ ----' le:'"'ill 1 L'A41Sao/rt • • • Legend q. ° ° L J I • " I } 1 st. As—bullt Conductor • • i ,4 ifetnoll 1 .1 , 40 a h o pro}ot Looauon o .• • 9 ° 44? a' "'f t., 0 ° ° ry� alc _ h id - 11,5 1 4 T~ " ' 4 0 ° ryh i I...n. —��L�ti M O • ° • to Location Map GRAPHIC SCALE 1' • • 30 15 0 30 0 • I u I 1t ° ° 9 � � � of A ''' t I we ■ m s 1h ° � • �� ° 0 ! y '� r • ti e ° 1 la ° • 1 � ),, 1 Il i p G. Davis : o / 0 • • ..1i>.‘ No. 4110•S ak *j • \y` 4 o o h b II ∎ 4 � h «••r 0 IV ■ 0 • tP 1 , gO F ESSIDNAO ' AP 1w�e r f t. . 0 0 A l �.∎ q• 0 Ary 0 � o A'S 1;:,,Y, ` ti ler f J o h 1 i 1�it l j o Al 0 Pioneer Natural Resouoes JOB NAME: 000guruk Drill Site DRAWN BY: Bt. I CHECKED BY: MJD LOCATION: Protracted Section 11 SCALE: 1 " -30' Township 13 North Range 7 East DATE: 7 -12 -07 Umiat Meridian Notes: NANUQ JOB NO. SHEET Coordinates are listed on sheets 3 and 4 DESCRIPTION: Alaska Nod 27. Zone 4 Conductor As —built Plan 05204 1 of 4 ti • )istrici Boundr • I SE orner o OOOGURUK SITE z Protracted Section 11 ` � Coordinates. I N 60281 11.04 II i �� 1 I E 470989.01 0 II , o v''254 . i ,` >a I Ref. AK BLM :. I �i ` ` ; Harrison: Boy Tract, "A" ♦ -24\ _ - • • . rowi • I 44. , \., i . % <U ■tr 4, 1 I 24 \ ,%. i 9. • • �\ 1' 4 i _r_ r' 1s 4� fttshore Iceroads5.99 Wes • � ecr Shore lceroor1=3.91? AI - - P! 20 to .... rut: Sao • � v • • • PI 7 to PI •. , Po■14 PI-15 P!-7t — i . PI-16 111111 I r ♦ �• ' W - 17 lundro karat ♦ DS 3N 9:O.P: r • ' ♦ •: ■ } i l b ` Roods to ;ta 3. I a ♦ PI . s . ,., � � � � -- Basis of Location 7 -94. i ll BuC ~ 7 ` "�i } DS -3H West Monument • � ..gy .midi gig st : C -*Pi oordinates � 3t- N 6001016.61 •STAKED p . .,' °. a E 498081.23 PI INFORMATION ONLY I I r 41 u . i Q ;�, „ " ,' Ref. Lownsbury & Assoc. n � D 4 1 t Drawing No. in - �- � 6.01—d672 cc Le i NSK 6 0 %� f = i % Ni • �r �.N _ .• , s�a � 9 k:,-!-',;;', Ella .° V• � E IzJ .. - rte' s. ,I • *nip G. Davis . 1 v , OFESSiON4 t''. .I► � 4 � 16.1. �� 111 � Pioneer Natural Resouces JOB NAME:. Oooguruk Drill Site Conductors DRAWN BY: BL CHECKED BY: MJD LOCATION: Protracted Section 11 SCALE: N/A Township 13 North Range 7 East DATE: 7 -12 -07 Umiat Meridion NANUQ JOB NO. SHEET DESCRIPTION: Basis of Location 05204 2 of 4 N $ectiQn Lute Q�1 Well atitude ( (NO Lo ngitude - __. -__ — F $L EEL 1 6, 031,1 469, 920,45 70 29 46,24160 150 14 45.46468 3035 1077 13,50 - 6,031,146,3 - 5 - 469, 915.52 7 Q 29 46,19252 150 14 45, 60922 3030 1082 13,50 3 6,031,141,39 469,910,59 7 0 29 150 14 45,75375 3025 1087 1 3.50 4 - 6,031,135.46 469,905,67 70 29 46 09485 150 14 45,89799 3020 1092 13.50 5 - 6031,131.45 - - 469,900.774 ' 70 2946,04538 - 150 - 14 46,04262 3015 1097 13.50 6 0,031,126,51 469, 895.80 7 0 29 45, 99660 150 1446,18735 3010 1102 13.50 7 6,031,113,73 469,883.13 70 29 45,87039 150 1.4 46,55879 2997 1115 13,50 8 6,0 469,878.21 70 45:82 - 150 - 14 46,70303 2992 1120 13.50 9 6,031,103.75 469, 868.36 7 0 29 45.722 6 150 14 499179 2982 1 - 130 _ 13.50 10 6 ,031,098.79 13 11 6 ,031,093.84 469,863.39 70 29 45,67398 150 14 47.13750 2977 1135 13.50 12 6,031,088.87 469,858.47 - 70 29 45,62490 150 47,28174 2972 1140 13.50 .- 6, - .0I,076,"0 -- 6 ------- 45 - 0784'5 - , - .61 --- 70 - 29 -- 4549 84-0 150 1447.65283 2960 1152 13,50 14 6,031,071,09 469,840,87 = 70 29 45,44932 150 14 47.79770 2965 1157 15 6,031,066.15 - 469,835.96 70 29 45.40053 150 14 47,94165 2950 ---j-- )162 ------- 13 -- ,50 ---- 950 1152 13.50 16 6 ,031,061.18 469,831.04 70 29 45.35145 150 14 48.08588 2945 1167 13,50 17 6,031,056.25 469,826.11 70 29 45,30277 150 14 48,23042 2940 1172 13,50 1 6, 031, 051.27 469, 821.18 70 29 45,25359 150 1.4 48.37495 2935 1177 13,50 — 19 - 6,031,036,52 - 469 808.50 70 2945 668 - .12768 15014 48.74 2922 1169 13, 50 20 6,031,033,50 469,803.59 70 29 45,07811 150 14 48789061 2917 1194 13,50 j 21 - 6 ,031,028,53 - 469,798,62 70 29 45.02903 150 1 49703632 2912 1199 1 13,50 • — 22 2_ 6,031,023,58 469,793,67 70 29 44,98014 150 14 49.18144 2907 1204 13,50 23 6,031,018,57 469,788.76 70 29 44,93067 150 14 4:45:3r 1209 13.50 • 24 - 0 7 ,03 - 1,013,6 - 0 4169,783,84 7 • 0 29 44.88159 -- 160714 - 4 - 9746.960 - , 2897 _ 1214 13,50 i OF 44 tv CO ' 1.. _ . r „ r, . . . T. t o $ .. T . ». � ». •i • • • <, T Philip G. Davis !if,/ t 3 ∎ �. NO.411o4 447- . h. •. ,p � � � � 1 I - ro :: is P Bp SstaiM. ' 4 IP ` Notes; _ 1I n or Bose n BP M n Level, �" = v eoti o.s a dc e . 8 e4 �+��v _e 2, Coordinates ore based on AIQskc State Pine Nod 27, ZOTIC 4, 3, M conductors ore within Protracted Section it Pioneer Naturist tur-st Resouoes JOE NAME: Ooogur-uk Drill Site Conductor$ DRAWN EY BL CHECKED BY; MJ0 LOCATION: Protracted Section 11 SCALE: N/A Township 13 North Ronne 7 East DATE; 7 =12 =07 Umict Meridian - NAN O JOB NO SHEET )ESCRIPTION; As�puilt CoQreiinQtes -- - 05204 3 of w Well No. Alaska ska State Latitude (N) Longitude ] Section Line Offset Pad Elev. FSL FEL 25 6,031,128.32 469, 943.64 70 29 46.01630 150 14 44.77930 3013 1055 13.50 26 6,031,123.35 469,938.69 70 29 45.96722 150 14 44.92442 3008 1060 13.50 27 6,031,118.33 469,933.76 70 29 45.91765 150 14 45.06895 300 1065 13.50 28 6,031,113.39 469, 928.86 70 29 45.86887 150 14 45.21260 2997 1070 13.50 29 . ' 6,031,108.44 469, 923.95 , 70 29 45.81999 150 14 45.35655 2992 1075 13.50 30 6,031,103.45 469,919.01 70 29 45.77071 150 14 45.50137 2988 1079 13.50 31 6, 031, 090.65 469, 906.38 70 29 45.64431 150 14 45.87163 2975 1092 13.50 32 6,031,085.68 469,901.39 70 29 45.59523 150 14 46.01793 2970 1097 13.50 33 6, 031, 080.67 469, 896.50 70 29 45.54576 150 14 46.16128 2965 1102 13.50 34 6,031,075.73 469,891.57 ' 70 29 45.49698 150 14 46.30581 2960 1106 13.50 35 6,031,070.76 469,886.60 70 29 45.44789 150 14 46.45152 2955 1111 13.50 36 6,031,065.83 469,881.69 70 29 45.39921 150 14 46.59547 2950 1116 13.50 37 6, 031, 053.00 469, 869.00 70 29 45.27251 150 14 46.96749 2937 1129 . 13.50 38 6,031,047.99 469, 864.14 70 29 45.22304 150 14 47.10995 2932 1134 13.50 39 6,031,043.03 469,859.20 70 29 45.17406 150 14 47.25478 2927 1139 13.50 40 6, 031, 038.10 469, 854.21 70.29 45.12537 150 14 47.40108 2922 1144 . 13.50 41 6,031,033.05 469,849.29 70 29 45.07551 150 14 47.54530 2917 1149 13.50 42 6, 031, 028.13 469, 844.38 70 29 45.02692 150 14 47.68925 2912 1154 13.50 43 6, 031, 015.46 469, 831.70 70 29 44.90180 150 14 48.06099 2899 1166 13.50 44 6,031,010.49 469,826.79 70 29 44.85272 150 14 48.20493 2894 1171 13.50 45 6,031,005.53 469,821.86 70 29 44.80373 150 14 48.34946 2889 1176 13.50 46 6,031,000.54 469,816.94 70 29 44.75446 150 14 48.49369 2884 1181 13.50 47 6,030,995.50 469,811.98 70 29 44.70469 150 14 48.63910 2879 1186 13.50 48 6,030,990.58 469,807.07 70 29 44.65610 150 14 48.78304 2874 1191 13.50 .`` ��"•1�1 4%, SURVEYOR'S CERTIFICATE 'S •A �' Q .°' 4. 1 D slip.• 1 HEREBY CERTIFY THAT I AM y:' i0- • -9 0 PROPERLY REGISTERED AND % * f 4 • TN ' " \* 1 0 LICENSED TO PRACTICE LAND f � 0 '" • "'° SURVEYING IN THE STATE OF j .� -.�' � 0 . .. • ` .... ALASKA AND THAT THIS PLAT T '� ; "" t fi i j i 'ilip G. Davis :1%1 REPRESENTS A SURVEY DONE BY ,..-A1:1::, + a, a s ; � � �r�. ) 4flo.s ; ��`�i ME OR UNDER MY SUPERVISION °E 7 r t ` �9 • 5° AND THAT I BELIEVE THAT ALL a 1 . " o bov, N AI + ARE CORRECT AS SUBMITTED TO s . l� ME BY NANUQ, INC. AS OF JULY 1 :- 12TH, 2007. Pioneer Natural Resouces JOB NAME: Oooguruk Drill Site Conductors DRAWN BY: BL CHECKED BY: MJD. LOCATION: Protracted Section 11 SCALE: N/A Township 13 North Ronge 7 East DATE: 7 - - Umiot Meridian NANUQ JOB NO. SHEET DESCRIPTION: As -built Coordinates 05204 4 of 4 • • TRANSMITTAL LETTER CHECKLIST WELL NAME ���� - 2_ PTD# Zie C development Service Exploratory Stratigraphic Test Non - Conventional Well r / FIELD: � � -4- D c V L - /Dl-z l D ( / Circle Appropriate Letter / Paragraphs to be Included in Transmittal Letter CHECK ADD -ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well Permit No. , (If last two digits in API No. . Production / injection should API number are continue to be reported as a function of the original API number between 60 -69) stated above. PILOT HOLE In accordance with 20 AAC 25.005(0, all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce / inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Should conventional core be acquired in this well, representative chip samples from each foot of core must be submitted to the Commission in accordance with 20 AAC 25.071. Non - Conventional Please note the following special condition of this permit: Well production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. 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