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Home My WebLink About212-031 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. 4,2 IQ - 03 j Well History File Identifier Organizing (done) ❑ Two-sided ❑ Rescan Needed WELL RESCAN: OVERSIZED: NOTES: Cx piR aP W ELL olor Items: ❑ Maps: rayscale Items: ❑ Logs: ❑ Poor Quality Originals: ❑ Other: ❑ Other: BY: dEb Date: 1 i T/I9. /s/ RIP Project Proofing BY: Maria Date: /s/ ale Scanning Preparation a, x 30 = 6o + I = TOTAL PAGES ( 7 I 1 I (Count does not include cover sheet) (1j/fJ BY: Date: /s/ ' Production Scanning Stage 1 Page Count from Scanned File: 6 A. (Count does include cover eet) Page Count Matches Number in Scanning Preparation: YES (44NOBY: ADDate: I1/ I/LI. /s/ t Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: /s/ Stage 2 Additional Well Reports: YES NO TOTAL PAGES: Digital version appended by: Meredith Michal Date: /s/ Final Page Count: Stage 1 + Stage 2: TOTAL PAGES: Scanning is complete at this point unless rescanning is required. ReScanned BY: Maria Date: /s/ Comments about this file: Quality Checked 7/8/2014 Well History File Cover Page_20140708.doc :-=i; /'-`1 C`=��-��? r iT_l �1'`�:l e�� =z� I rr�,�l Fi \ (7,-0 �; it a g fi'y 1 Iii 1'.-_ fhrhi 1 !' ` /I, , - , !'� i', i-a I, i! 1! !1 �-� H _'w i �S ra kpi / SEAN PARNELL,GOVERNOR D kl ,its C-il i_L_ c`j' D I f ''6 N 11 `V. _{\ k 0 ALASKA OIL AND GASn� 333 W.7th AVENUE,SUITE 100 CONSERVATION COMMISSION / ANCHORAGE,ALASKA 99501-3539 / PHONE (907)279-1433 FAX (907)276-7542 Alex Vaughan Senior Drilling Engineer Pioneer Natural Resources Alaska, Inc. 700 G Street, Suite 600 Anchorage, AK 99501 Re: Oooguruk Field, Nuiqsut Pool, ODSN-25L1 Pioneer Natural Resources Alaska, Inc. Permit No: 212-031 Surface Location: 3013' FSL, 1055' FEL, SEC. 11, T13N, R7E, UM Bottomhole Location: 1101' FSL, 2974' FEL, SEC. 27, T14N, R7E, UM Dear Mr. Vaughan: Enclosed is the approved application for permit to drill the above referenced development well. The permit is for a new wellbore segment of existing well ODSN-25, Permit No 212- 030, API 50-703-20656-00. Production should continue to be reported as a function of the original API number stated above. 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. Sincerely, 472,--0-AA----- Cath P. Foerster Ch • DATED this Z.Z day of March, 2012. cc: Department of Fish & Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o end. (via e-mail) STATE OF Ai. KA OIL AND GAS CONSERVATION COM, >ION !RECEIVED PERMIT TO DRILL MAP 1 2 701? 20 AAC 25.005 1 a.Type of Work: 1 b.Proposed Well Class: Development-Oil ❑✓ • Service- Winj ❑ Single Zone n (8 i ayuif llEs tp,Ag f0 Drill ❑ , Redrill ❑ Strati r0- hic Test ❑ Development-Gas0 Service-Supply 0 Multiple Zone oat e¢61, A .GasWrages 0 Re-entry ❑ Exploratory ❑ Service- WAG 0 Service-Disp ❑ p711"-1f076Shale Gas ❑ 2.Operator Name: 5. Bond: Blanket 2 Single Well ❑ 11.Well Name and Number: Pioneer Natural Resources Alaska, Inc. Bond No. 103655283 • ODSN-25L1 3.Address: 700 G Street, Suite 600 6.Proposed Depth: 12.Field/Pool(s): Anchorage,AK 99501 MD: 18,148 ' TVD: 6101 4a. Location of Well(Governmental Section): 7.Property Designation Lease Number): Oooguruk-Nuiqsut Oil Pool ��S5DD��c D i z Surface: 3013'FSL, 1055' FEL,Sec. 11,T13N, R7E, UM . ADL B55938/ADL 89958/ADL 389959 Top of Productive Horizon: 8.Land Use Permit: 13.Approximate Spud Date: 1411'FSL,4316'FEL Sec.35,T14N,R7E,UM 417497 March 23,2012 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 1101'FSL,2974'FEL,Sec.27,T14N,R7E,UM 5760/2560/2560 1411' 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-469943.64 ° y-6031128.32 Zone-ASP 4 GL Elevation above MSL: 13.5 feet to Same Pool: ODSN-31 is 810'away 16.Deviated wells: Kickoff depth: 11,800 feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 91.40 degrees Downhole: 3109 ' Surface: 2438 " 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) 6-1/8" 4-1/2" 12.6# L-80 HYD 521 6028' 12120' 6165' 18148' 6101' Uncemented 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 ND Conductor/Structural 115' 16" Driven 158' 158' Surface(proposed) 4906' 11-3/4" 649 sx PF'L';493 sx Class'G' 5242 _ 3261' Drig Liner(proposed) _ 5144' 9-5/8" 200 sx Class'G' _ 4852'-9944' 3076'-5506' Intermediate(proposed) 11,787' 7" k7&-sx Class'G' 36er 5 K 11,820' 6140' Liner(proposed) 3872' 4-1/2" Uncemented11,670'-15,510' 6124'-6076' Perforation Depth MD(ft): Perforation Depth ND(ft): 3 e- L 20. Attachments: Property Plat Q BOP Sketch❑ Drilling Program 0 Time v.Depth Plot ❑ Shallow Hazard Analysis❑ Diverter Sketch 0 Seabed Report ❑ Drilling Fluid Program ❑., 20 AAC 25.050 requirements 0 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 Alex VaughanTitle Senior Drilling Engineer Signature _ -- Phone 343-2186 Date 3/7/2012 Commission Use Only Permit to Drill 7 API ber: „ Permit Appro I See cover letter for other Number: Z Z U / 50-7a1 ,,66.S �'- t"'.) Date: X22 1 �' . 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: E Other: .' L --(''L` /�5, jc`',n 7:-.s (- Samples req'd: Yes 0 No Er Mud log req'd: Yes ❑ No [E' / 2--- H2S measures: YesNov Directional req'd: Yes ErNo z 0 ❑ svy q IJ 0 17 ,L,« 4. K LCL-c-0 APPROVED BY THE COMMISSION DATE: 3 -Z L - (2- COMMISSIONER /J/Z5 14/ ORIGINAL , u Form 10-401(Revised 7/2009) This permit is valid for 24 months from the date of approval(20AAC %z 5.005(g)) Submit in Duplicate 'O� PIONEER NATURAL RESOURCES ALASKA Pioneer Natural Resources Alaska, Inc. 700 G Street,Suite 600 Anchorage,Alaska 99501 Tel: (907)277-2700 Fax:(907)343-2190 March 7th, 2012 State of Alaska Alaska Oil and Gas Conservation Commission 333 West 7th Avenue, Suite#100 Anchorage, AK 99501 RE: Application for Permit to Drill ODSN-25 & ODSN-25L1 Surface Location: 3013' FSL, 1055' FEL, Sec. 11, T13N, R7E, UM X = 469943.64, Y = 6031128.32, 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 multi-lateral 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 -5,242' MD / 3,261' TVD and set 11-3/4" casing. • Intermediate Hole 1: o Drill 10-5/8" and under-ream while drilling (UWD) to 11-3/4" to -9,944' MD / 5,506' TVD. Run and set a 9-5/8" drilling liner. • Intermediate Hole 2: o Drill 8-1/2" and under-ream while drilling (UWD) to 9-1/2" to -11,820' MD / 6,140' TVD and set 7" Intermediate casing into the top of the Oooguruk-Nuiqsut formation. • ODSN-25 Production Hole: o Drill 6-1/8" horizontally to -15,510' MD/ 6,076' TVD and set a 4-1/2" plop-&-drop solid liner with perforated pups. • ODSN-25L1 Production Hole: 7'`' o Kick off ODSN-25L1 lateral @ 11,796' MD / 6,137' TVD o Drill 6-1/8" horizontally to -18,148' MD / 6,101' TVD and set a 4-1/2" solid liner with perforated pups. • Completion: o 2-7/8" tubing Alaska Oil & Gas Conservation Commission March 7th, 2012 Page 2 of 3 PNRA will implement Managed Pressure Drilling technology (MPD) while drilling the Intermediate 2 and Lateral hole sections 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 -13.0 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 to ODSN-25 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. • Open formations: • Nuiqsut Sands, -9.8 ppg Pore Pressure • From the Intermediate 2 Shoe to ODSN-25L1 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 • Open formations: • Nuiqsut Sands, -9.8 ppg Pore Pressure 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. Alaska Oil & Gas Conservation Commission March 7th, 2012 Page 3 of 3 The following items are on file with the AOGCC: 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 Alex Vaughan, Senior Drilling Engineer (20 AAC 25.070) 907.343.2186 alex.vaughan@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 March 23rd, 2012. If you have any questions or require further information, please contact Alex Vaughan at 907.343.2186. Sincerely, Alex Vaughan Senior Drilling Engineer Attachments: Form 10-401 Supporting permit information cc: ODSN-25 & ODSN-25L1 Well File Permit to Drill Well Plan Summary ODSN-25 & ODSN-25L1 Oooguruk — Nuiqsut Dual Lateral Production Well Surface TD @ 5,242' MD / 3,261' TVD Drilling Liner TD @ 9,944' MD / 5,506' TVD Intermediate TD @ 11,820' MD / 6,140' TVD ODSN-25 Lateral TD @ 15,510' MD / 6,076' TVD ODSN-25L1 Lateral TD @ 18,148' MD / 6,101' TVD Surface Location: 3013' FSL, 1055' FEL, Sec. 11, T13N, R7E, UM ASP 4 (NAD27) projection X=469943.64 Y=6031128.32 Target: Oooguruk-Nuiqsut 1411' FSL, 4316' FEL Sec. 35, T14N, R7E X= 466561.51 Y= 6040035.77 6,140' TVDrkb ODSN-25 Bottom Hole Location 4535' FSL, 1014' FEL, Sec. 34, T14N, R7E, UM X= 464745.00 Y= 6043232.00 6,076' TVDrkb ODSN-25L1 Bottom Hole Location 1101' FSL, 2974' FEL, Sec. 27, T14N, R7E, UM X=462793.17 Y=6045090.64 6,101' TVDrkb AFE Number: TBA Est. Start Date: March 23rd, 2012 Rig: Nabors 19AC Operating days: 60 days to Drill and Complete Objective &Well Type Nuiqsut Development Well Well Design: Modified Slimhole(11-3/4" x 9-5/8" liner x 7" x 4-1/2" liner) Dual-Lateral 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: March 7th, 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 1 of 13 Well Control: Well Section Pressure Depth psi TVD Basis 14-1/2" Surface Section Maximum anticipated BHP 1458 3261 Based on seawater gradient of 0.4472 psi/f Maximum surface pressure (Based on BHP and a full column of 1100 Surface gas from TD @ 0.11 psi/ft) 10-5/8"x 11-3/4" Drilling Liner Hole Section Maximum anticipated BHP (Based on seawater gradient of 0.4472 2462 5506 psi/ft) Maximum surface pressure 1857 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 3129 6140 Based on 9.8 ppg Oooguruk-Kuparuk pore pressure) Maximum surface pressure 2454 Surface Based on BHP and a full column of gas from TD @ 0.11 psi/ft) 6-1/8" Lateral Hole Section: ODSN-25 Maximum anticipated BHP 3096 6076 Based on 9.8 ppg Oooguruk-Nuiqsut pore pressure) Maximum surface pressure 2428 Surface Based on BHP and a full column of gas from TD @ 0.11 psi/ft) 6-1/8" Lateral Hole Section: ODSN-25L1 Maximum anticipated BHP 3109 6101 Based on'9.8 ppg Oooguruk-Nuiqsut pore pressure) Maximum surface pressure 2438 Surface Based on BHP and a full column of gas from TD @ 0.11 psi/ft) Pioneer Natural Resources Last Revised: March 7th, 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 2 of 13 • Maximum casing pressure: 3500 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: March 7th, 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 3 of 13 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 FIT 13.5 ppg 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: 10-518"x 11-3/4" hole MOBM Interval Density (ppg) Viscosity (secs) YP PV HTHP 0/W Initial to TD 10.5 ppg 55-80 15-25 20-35 <6.0 80/20 Intermediate Hole Mud Properties: 8-1/2" x 9-1/2" 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 (-13.0 ppg via (8-10 MPD) HTHP) ODSN-25 Lateral Hole Mud Properties: 6-1/8" hole MOBM Interval Density (ppg) Viscosity(secs) YP PV HTHP 0/W Initial to TD 7.2 -8.2 ppg 55-80 12 -25 10-20 <6 94/6 (-9.8-10.2 ppg via MPD) ODSN-25L1 Lateral Hole Mud Properties: 6-1/8" hole MOBM Interval Density(ppg) , Viscosity (secs) YP PV HTHP 0 1 W Initial to TD 7.2 - 8.2 ppg 55-80 12 -25 10 -20 <6 94/6 (-9.8 -10.2 ppg via MPD) Pioneer Natural Resources Last Revised: March 7t", 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 4 of 13 Formation Markers: Formation Tops MD (ft) TVDrkb (ft) Pore Press. EMW Comments (psi) (PPM Base of Permafrost 1743 1566 Top West Sak 3198 2293 1031 8.65 Base of fluvial sands Tuffaceous Shales 4508 2913 Hue2 tuff 5223 3252 11-3/4" casing point 5242 3261 Brook 2B 7546 4352 Top Torok Sand 9038 5062 2277 8.65 Base Torok Sand 9520 5298 Torok Shale 1 9932 5500 9-5/8"casing point 9944 5506 Top HRZ 10611 5832 Base HRZ(Top Kalubik Sh) 10919 5969 Kalubik Mkr 10997 5997 Top Kuparuk C 11245 6066 3091 9.8 LCU (Top Miluveach Sh) 11297 6077 BCU (Top Kingak Sh) 11631 6120 Top Nuiqsut 11778 6135 3126 9.8 Production Zone 7" casing point 11820 6140 ODSN-25 TD 15510 6076 ODSN-25L1 TD 18148 6101 Pioneer Natural Resources Last Revised: March 7th, 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 5 of 13 Logging Program: 14-112" Section: Drilling: Dir/GR Open Hole: N/A Cased Hole: N/A 10-5/8"x 11-3/4" Section: Drilling: Mud Logging Dir/GR/Res Open Hole: N/A Cased Hole: N/A 8-1/2" Section: Drilling: Mud Logging Dir/GR/ Res/AzDens/Neut Open Hole: N/A Cased Hole: 6-1/8" Section: ODSN-25 & ODSN-25L1 Drilling: Mud logging Dir/GR/ Res/AzDens/ Neut / PWD/Bat Sonic Open Hole: N/A Cased Hole: N/A Pioneer Natural Resources Last Revised: March 7th,2012 ODSN-25&ODSN-25L1 Permit To Drill Page 6 of 13 ODSN-25 Casing Program: Hole Casing/ Weight Grade Conn. Casing Csg/Tbg Hole Btm Size Tubing Length ToP MDrkb/TVDrkb MDrkb 24" 16" 109# H-40 Welded 115 Surface 158 158 14-1/2" 11-3/4" 60# L-80 Hydril 521 5199 Surface 5242 3261 11-3/4" 9-5/8" 40# L-80 Hydril 521 4852 5092 9944 5506 8-1/2" 7" 26# L-80 BTC-M 11777 Surface 11820 6140 6-1/8" 4-1/2" 12.6# L-80 Hydril 521 3840 11670 15510 6076 ODSN-25L1 Casing Program: Hole Casing/ ' Weight Grade Conn. Casing Csg/Tbg Hole Btm Size Tubing Length MP MDrkb/TVDrkb MDrkb 6-1/8" 4-1/2" 12.6# L-80 Hydril 521 6028 12120 18148 6101 Tubing 2-7/8" 6.4# L-80 IBT 11637 Surface 11680 6360 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 Hydril 511 7240 5410 604 M 604 M 7" 26# L-80 6.276" 6.151 BTC-M 7240 5410 604 M 604 M 4-1/2" 12.6# L-80 3.958" 3.833" Hydril 521 na na 289 M 289 M Pioneer Natural Resources Last Revised: March 7th, 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 7 of 13 Cement Calculations: Casing Size: 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: 30% excess, plus 85' shoe track Tail TOC: 4,199' MD-500' MD above 3000' TVD Total Cement Volume: Preflush 10 bbl water Spacer 60 bbl 10.0 ppg Tuned Spacer Lead 479 bbls/649 sx of 10.92 ppg Type"L" Permafrost Cement. 4.15 cf/sk, 20.0 gps water req. Tail 104 bbls/493 sx of 15.9 ppg Premium "G" + adds. 1.19 cf/sk, 5.23 gps water req. Displ 566 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: 9-5/8" Intermediate 1 -Drilling Liner-single stage Basis: TOC: 9,444' MD -500' MD above casing point 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 452 bbls mud Temp BHST- 135° F, BHCT-110° F Casing Size: 7" Intermediate 2-single stage Basis: TOC: -10, 743'MD-500' MD above the top of the Kuparuk 40% excess, plus 85' shoe track Total Cement Volume: Preflush 10 bbl water Spacer 40 bbl 12.5 ppg Dual Spacer Primary 37 bbls/ 176 sx Premium"G" + adds. 1.17 cf/sk ,c}c:, s �� Displ 449 bbls mud 3/z't/1 Temp BHST- 165° F, BHCT-135° F This well is outside the 1/2 mile radius around ODSN-DW1 at the intersection with the Torok disposal zone. Disposal: Annular Iniection: 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: March 7th, 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 8 of 13 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 ODSN-25 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 with 2-7/8" x 5"VBR's and test with 5"drill pipe. 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. • Maintain a FOSV on the rig floor with a 9-5/8" Hydril 521 cross-over. 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 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 16. POOH w/5" DP. 17. ND BOPE, ND Drilling spool, NU Mulitbowl Wellhead, & 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 test prior to performing this step 18. MU 8-1/2" RSS, MWD/LWD on 5" DP. RU MPD trip nipple. 19. RIH and cleanout casing to landing collar. 20. Close pipe rams and combo pressure test the Drilling Liner and the Surface Casing to 3500 psi for 30 minutes --chart and send to ODE. 21. Drill through drilling liner shoe + 20' of new hole and perform FIT to 13.5 ppg, 22. RD MPD trip nipple and RU bearing assembly. Drill 8-1/2" Intermediate 2 to casing point. Pioneer Natural Resources Last Revised: March 7th,2012 ODSN-25&ODSN-25L1 Permit To Drill Page 9 of 13 23. Circulate and condition the well to run 7" intermediate casing. Displace the well over to—12.0 ppg mud for shale stability. RD the MPD bearing assembly and RU MPD trip nipple. POOH. 24. Change one set of pipe rams to 7" and test BOPE as required. • Maintain a FOSV on the rig floor with a 7" cross-over of appropriate threading. Note: Intermediate casing string may be run as a 7" long string or as a 7" liner with a 7"tieback string to surface depending on drilling conditions. Both options have been provided below: Option #1: 7" Longstrinq 25. Run and cement the 7"26#L-80 BTC-M intermediate casing. 26. Bump the plug and bring the pressure up to 3500 psi—hold for 5 minute pressure test. Release pressure and ensure floats are holding. 27. LD 5"DP Option #2: 7" Liner with Tie-Back Option 28. Run 7"; 26#L-80 Hydril 511 intermediate liner on 5"DP. Set liner hanger, release from liner and cement. Bump the plug and bring the pressure up to 3500 psi—hold for 5 minute pressure test. • This will provide a quick integrity test of the 7"liner. • Note the pressure test in the morning report. 29. 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. 30. Set liner top packer and test the 9-5/8"liner and 7"liner top packer to 3500 psi for 30 minutes. • This will check the integrity of the 7"liner top packer to ensure isolation between the 7"liner and the 9-5/8"drilling liner. • Note the pressure test of the liner top in the morning report 31. Run 7", 26#L-80 BTC intermediate tie-back to 7"liner-hanger seal bore and space out. 32. Displace diesel freeze protection down 7"annulus to 2,000'tvd with annular preventer closed. 33. Strip through annular preventer and sting into 7"liner-hanger seal bore and land tie-back casing. 34. Pressure test seal assembly to 3500 psi—hold&chart for 30 minutes. 35. Pressure test 7"tie back annulus 3500 psi—hold and chart for 30 minutes. 36. Set and test 7"pack-off. 37. RU MPD trip nipple & PU 4" DP as needed to TD the lateral hole section. 38. RIH to landing collar and w/4" DP & mill tooth cleanout bit. 39. Change pipe rams to 4" and test BOPE to 250/4500 psi— Notify AOGCC 48 hours in advance of test. 40. Pressure test casing to 3500 psi—chart and hold for 30 minute pressure test unless previously done in Option #2. Send chart to ODE. 41. Drill through Intermediate 2 shoe and POOH w/cleanout assembly. 42. MU 6-1/8" RSS, MWD/LWD drilling assembly on 4" DP and RIH. 43. RD MPD trip nipple and RU bearing assembly. 44. Displace to drill-in-fluid for lateral hole. 45. Drill rathole + 20' of new hole and perform FIT to 12.5 ppg. Pioneer Natural Resources Last Revised: March 7th,2012 ODSN-25&ODSN-25L1 Permit To Drill Page 10 of 13 46. Drill 6-1/8" lateral hole to TD. 47. Circulate and condition hole to run liner. 48. POH to intermediate shoe and set heavy weight balance brine pill. 49. RD MPD bearing assembly and RU MPD trip nipple. Cont POH to surface. 50. Change one set of pipe rams to 4-1/2" and test BOPE as required. • Maintain a FOSV on the rig floor with a 4-1/2" Hydril 521 cross-over. 51. RIH w/4-1/2" Plop& Drop" production liner w/swell packers, ported pups, and aluminum kick-off billet from 300' outside the intermediate shoe to TD. 52. Release from the liner and set the liner top packer. Displace the well over to heavy weight MOBM and POOH. Rig Activity: Drill ODSN-25L1 1. MU ODSN-25L1 6-1/8" RSS, MWD/LWD drilling assembly and RIH to intermediate shoe. RD MPD trip nipple and RU bearing assembly. 2. Displace heavy weight balance MOBM to drill-in-fluid. 3. RIH to aluminum billet and kickoff to drill ODSN-25L1. c / z, /Lp `y'N-° 4. Drill 6-1/8" ODSN-25L1 lateral production hole to TD. 5. Circulate and condition hole to run liner. 6. POH to intermediate shoe and set heavy weight balance MOBM pill. Cont POH to surface. 7. Change one set of pipe rams to 4-1/2" and test BOPE as required. 8. RIH w/4-1/2" production liner w/sliding sleeves, swell packers, and ported pups from 150' inside the intermediate shoe to TD. 9. Release from the liner and set the liner top packer. Displace the well over to 10.0 ppg completion Brine and POOH. 10. MU and RIH w/2-7/8" ESP production completion w/ADV, Packer, GLM, and SSSV. 11. Space out, Land the tubing and RILDS. Install TWC. 12. ND BOPE, NU tree and test to 5,000 psi. 13. Pull TWC and reverse circulate corrosion inhibited brine and diesel to freeze protect the well to —2000' TVD and allow to u-tube. 14. 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. 15. 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: March 7th, 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 11 of 13 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 %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: March 7th, 2012 ODSN-25&ODSN-25L1 Permit To Drill Page 12 of 13 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. • 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. Kick Tolerancellntegrity Testing Kick Tolerance/Integrity Testing Summary Table Casing set/ Maximum Mud Weight Exp Pore Min LOT I FIT Interval Influx Volume Press 11-3/4" Surface/ 536 bbls 11 ppg 2462 12.5 ppg (LOT) 10-5/8"x 11-3/4" 9-5/8" Drilling Liner/ Infinite 9.8-10.5 ppg 3129 13.5 ppg (FIT), 8-1/2" x 9-1/2" (13.0 EMW w/MPD) 7" Intermediate/ Infinite 7.2-8.2 ppg 3096 12.5 ppg (FIT) ODSN-25 6-1/8" (9.8-10.2 EMW w/MPD) 7" Intermediate/ Infinite 7.2-8.2 ppg 3109 na ODSN-25L1 6-1/8" (9.8-10.2 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 H2S site, however Standard Operating Procedures for H2S precautions should be followed at all times. Faults • Seismic faults with expected throws of 15-40' may be encountered. Losses may be associated with faults. • Consult the ODS data sheet for additional information (still in development) Pioneer Natural Resources Last Revised: March 7th,2012 ODSN-25&ODSN-25L1 Permit To Drill Page 13 of 13 ' AIL Conductor I ....-- ... J1 f Tubing retrievable ScSSSV • Vent Valves Control Line 11-3/4",60#L-80 Hyd 521 li _It 1 GLM ■ I 1 S >'41 7"x 2-7/8"Gas Vent valve Packer 2-7/8",6.5#L-80 IBT-BTC JTop of Cement 500'MD above 9-5/8"shoe 9-5/8",40#L-80 Hydril 521 O o O .,_ Automatic Divert Valve(ADV) ESP(Pump,Motor,&Jewelry I dl 4 Top of Cement 500'MD above the Kuparuk 7",26#L-80 BTC-M&Hydril 511 Aluminum Kick-Off Billet 1�1 Sliding Sleeve ResMan Produced Oil&Water Markers 1 ODSN-25 TD: 15,510'MD/6,076'TVD too 00 00 00 00 00 00 O 00 00 00 00 00 00 00 O , 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 00 00 00 00 00 , 00 00 Oil Base Swell Packer 4-1/2", 12.6#L-80 Hydril 521 Liner w/Perforated Pups ODSN-25L1 TD: 18,148'MD/6,101'TVD Date: Revision By: Comments pp PIONEER3/6/2012 Alex Vaughan Proposed ESP Completion Design ODSN-25 & ODSN-25L1 NATURALRESOURCESA.AS(A Proposed Completion Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN-25 - Slot ODS-25 ODSN-25 KE1 L1 Plan: ODSN-25 KE1 L1 wp03 Standard Proposal Report 09 March, 2012 HALLIBURTON ■ Sperry Drilling Services PIONEERHALLIBURTON _ REFERENCE INFORMATION Co-ordieate(N/E)Rderace:Well ODSN-25-Slot ODS-25 True North NATURAL RESOURCES Sperry Drilling Vert cal(7VD)Rderesce:42.T+13.5'�5ti28(Naborsl9AC) MaeeredDepth Rdeeoa:42.7'+13.5' 5628(Nabors 19AC) Calalatioe Method:Mieimom Corvatore ;OMPANY DEfARS: Well Pluming-Pioneer-Oooguruk - CalculationMethod:Minimum Curvature SECTION DETAILS Error System:ISCWSA Scan Method: Tray.Cylinder North Sec MD Inc Azi TVD +N/-S +E/-W DLeg TFace VSec Target Error Surface: Elliptical Conic 1 11796.0 83.27 336.05 6137.2 8872.8 -3408.8 0.00 0.00 9447.1 Waring Method: Rules Based 2 11856.0 83.27 336.05 6144.2 8927.3 -3433.0 0.01 0.00 9506.6 3 11886.0 83.28 334.84 6147.7 8954.4 -3445.4 4.00 -90.00 9536.3 4 12297.5 91.55 325.66 6166.3 9310.5 -3649.0 300 -48.24 9946.2 Project: Oooguruk Development 5 13020.5 91.55 325.66 6146.8 9907.3 -4056.7 0.00 0.00 10663.6 Site: Oooguruk Drill Site 6 13043.1 91.41 325.00 6146.2 9925.9 -4069.5 3.00 -101.60 10686.0 N25 KE1 L1 V1 Ti g7 13101.1 91.40 323.26 6144.8 9972.9 -4103.5 3.00 -90.25 10743.4 Well: ODSN-25 8 14460.2 91.40 323.26 6111.5 11061.6 -4916.3 0.00 0.00 12083.8 Wellbore: ODSN-25 KE1 L1 9 14473.1 91.11 323.00 6111.2 11072.0 -4924.1 3.00 -138.63 12096.6 N25 KE1 L1 V1 T2 10 14658.9 91.14 328.57 6107.5 11225.5 -5628.4 3.00 89.65 12280.9 Plan:ODSN-25 KE1 L1 wp03 11 15218.4 91.14 328.57 6096.4 11702.9 -5320.1 0.00 0.00 12838.9 12 15282.4 89.23 328.75 6096.2 11757.6 -5353.4 3.00 174.66 12902.8 N25 KE1 L1 V1 T3 SURVEY PROGRAM 13 15337.4 88.79 327.16 6097.2 11804.1 -5382.6 3.00 -105.47 12957.5 14 15681.9 88.79 327.16 6104.4 12093.6 -5569.4 0.00 0.00 13300.4 15 15977.2 90.52 318.47 6106.2 12328.6 -5747.7 3.00 -78.76 13591.1 N25 KE1 L1 V1 T4 Date:2012-03-09T00:00:00 Validated:Yes Version: 16 15983.1 90.53 318.30 6106.1 12332.9 -5751.5 3.00 -86.84 13596.7 Depth From Depth To Survey/Plan Tool 17 17044.9 90.53 318.30 6096.3 13125.7 -6457.9 0.00 0.00 14625.4 P P Y 18 17071.6 89.74 318.40 6096.2 13145.7 -6475.6 3.00 172.78 14651.3 N25 KE1 L1 V1 T5 42.7 600.0 ODSN-25 KE1 wp08 SR-Gyro-SS 19 17114.2 89.73 317.12 9096.4 13177.2 -6504.3 3.00 -90.20 14692.4 600.0 5200.0 ODSN-25 KE1 wp08 MWD+IFR2+MS+sag 20 18147.9 89.73 317.12 6101.2 13934.7 -7207.6 0.00 0.00 15688.4 N25 KE1 L1 V1 T6 5200.0 9950.0 ODSN-25 KE1 wp08 MWD+IFR2+MS+sag 9950.0 11796.0 ODSN-25 KE1 wp08 MWD+IFR2+MS+sag 11796.0 18147.9 ODSN-25 KE1 L1 wp03 MWD+IFR2+MS+sag - WELLBORE TARGET DETAILS(MAP CO-ORDINATES) Name TVD +WS +E/-W Northing Easting Shape 16200- N25 KE1 L1 V113 6096.2 11757.3 -5353.8 6042906.00 464638.00 Point _ N25 KEI L1 V1 T5 609E2 13145.9 -6475.5 6044299.00 463522.00 Point - N25 6E1 L1 VI T6 6101.2 13935.1 -7207.8 6045091.00 462793.00 Point - N25 KE1 L1 VI T4 6106.2 12328.8 -5748.1 6043479.00 464246.00 Point 15600- N25 KE1 UI Vt T2 6111.2 11072.0 -4923.9 6042219.00 465065.00 Point - N25 KE1 L1 W T1 6146.2 9926.3 -4070.2 6041070.00 465914.00 Point - ODSN-25/ODSN-25 KE1 Ll wp03 15000- / _ / WELL DETAILS: ODSN-25 i - / Ground Level: 13.5 i +N/-S +E/-W Norte Easting Latitmde Longitude Slot 14400- Total Depth:18147.9'MD,6101.2'TVD 6.0 0.0 6031139.32 469943.64 70496 -150.246 ODS-25 4.5 I�b`O\,----End Dir.17114.2'MD,6096.4'TVD E 13800- . ' CASING DETAILS _ r ,'Start Dir 3°/100':17044.9'MD,6096.3TVD TVD MD Name Size • c - I 3261.0 5241.5 11 3/4" 11-3/4 .‘ri. -IN25 KE1 LI VI T61 - 5506.0 9944.4 95/8" 9-5/8 • 13200- _ 6141.2 11830.0 7" 7 6101.2 18147.9 4.5 4-1/2 + )3fdDir 15983.1'MD,6106.1'TVD t .-Start Dir 3%100':15691.9 MD,6104.4TVD 12600- IN25 KEI LI VI TSI - DDI=6.80 1 , ▪ _ - ODSN-25/ODSN-25 KEI wp08 3 - O 12000- End Dir 15337.4'MD,6097.2'TVD to - N25 KE1 LI V1 T4 Start Dir 3°/100':15218.4'MD,6096.4'TVD 11400- -_End Dir:14658.9'MD,6107.5'TVD IN25 KE1 LI VI1131 -- Start Dir 3°/100':14460.2'MD,6111.5'TVD 10800- - End Dir 13101.1'MD,6144.8'TVD - Hr25 KEl Ll VI T2 1200 _ -/Start Dir 3°/100':13020.5'MD,6146.8'TVD - \ ''/'End Dir:12297.5'MD,6166.3'TVD 9600 IN25KEI LI VI TI _ \ Start Dir 3'7100.:11886 MD,6147.7TVD 9000- -- - Start Dir 4°/100':11856'MD,6144.2TVD:90°LT IF _ / _ / 8400- 7" Tie-in Survey 7800- - 7200- 9 5/8"-- ,5500 6600- W_��nn- i I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I IWVI I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I i l l l -7800 -7200 -6600 -6000 -5400 -4800 -4200 -3600 -3000 -2400 -1800 -1200 -600 0 600 1200 1800 2400 West(-)/East(+)(1500 ft/in) M - c 'l r N i W - z.''mg H H H F F F Aa N O O J > O N8S > > > > > > ,o 0 W Y = —a J J NJ J J J LI 8LW WW u.= - U - CN / _ N / [Z YYYYYY pp Zb-KKe N NW NN N N W � N zz z ZZ n� p • o Q O 1 / z - O _q��2 a - 0c m P fu N_mNm "r0. rnn1:,7 , a o M• H nfg ,p0"NW1 OmL - s co >{ O.+a 8aQO6-( 02N$QOOQ$ d N yv� _ _ �--� _ ` p p H — 0 • 3NN 8p8 �p �pQp(OQpmOp186 10 O - at _Sa0_ pNOWO7n01- 0 w U y 1144 FOO0 TO7O . 7Or OnOIO NY 0 m O J _ O F O0 d O. 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U r .- N N N co M Q 10 N CD ID CO Qi 3 CWOO, z 8 (um)WOO 43dea leo!.ian awl Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 L1 Design: ODSN-25 KE1 L1 wp03 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 lysing geodetic scale factor Site Oooguruk Drill Site Site Position: Northing: 6,031,151.32ft Latitude: 70.496 From: Map Easting: 469,920.45ft Longitude: -150.246 Position Uncertainty: 0.0 ft Slot Radius: " Grid Convergence: -0.23 ? Well ODSN-25-Slot ODS-25 Well Position +N/-S 0.0 ft Northing: 6,031,128.32 ft Latitude: 70.496 +E/-W 0.0 ft Easting: 469,943.64 ft Longitude: -150.246 Position Uncertainty 0.0 ft Wellhead Elevation: ft Sround Level: 13.5ft Wellbore ODSN-25 KE1 L1 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (?) !2) (nT) IGRF200510 12/31/2009 21.99 80.81 57,759 Design ODSN-25 KE1 L1 wp03 Audit Notes: Version: Phase: PLAN Tie On Depth: 11,796.0 Vertical Section: Depth From(TVD) +N/-S +EI-W Direction (ft) (ft) (ft) (bearing) 42.7 0.0 0.0 332.65 3/9/2012 10:05:44AM Page 2 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 L1 Design: ODSN-25 KE1 L1 wp03 Plan Sections Measured Vertical TVD Dogleg Build Turn Depth Inclination Azimuth Depth System +N/-S +E/-W Rate Rate Rate Tool Face (ft) (?) (bearin (ft) ft (ft) (ft) (?/100ft) (?/100ft) (?/100ft) (?) 11,796.0 83.27 336.05 6,137.2 6,081.0 8,872.8 -3,408.8 0.00 0.00 0.00 0.00 11,856.0 83.27 336.05 6,144.2 6,088.0 8,927.3 -3,433.0 0.01 0.01 0.00 0.00 11,886.0 83.28 334.84 6,147.7 6,091.5 8,954.4 -3,445.4 4.00 0.00 -4.03 -90.00 12,297.5 91.55 325.66 6,166.3 6,110.1 9,310.5 -3,648.0 3.00 2.01 -2.23 -48.24 13,020.5 91.55 325.66 6,146.8 6,090.6 9,907.3 -4,056.7 0.00 0.00 0.00 0.00 13,043.1 91.41 325.00 6,146.2 6,090.0 9,925.9 -4,069.5 3.00 -0.60 -2.94 -101.60 13,101.1 91.40 323.26 6,144.8 6,088.6 9,972.9 -4,103.5 3.00 -0.01 -3.00 -90.25 14,460.2 91.40 323.26 6,111.5 6,055.3 11,061.6 -4,916.3 0.00 0.00 0.00 0.00 14,473.1 91.11 323.00 6,111.2 6,055.0 11,072.0 -4,924.1 3.00 -2.25 -1.98 -138.63 14,658.9 91.14 328.57 6,107.5 6,051.3 11,225.5 -5,028.4 3.00 0.02 3.00 89.65 15,218.4 91.14 328.57 6,096.4 6,040.2 11,702.9 -5,320.1 0.00 0.00 0.00 0.00 15,282.4 89.23 328.75 6,096.2 6,040.0 11,757.6 -5,353.4 3.00 -2.99 0.28 174.66 15,337.4 88.79 327.16 6,097.2 6,041.0 11,804.1 -5,382.6 3.00 -0.80 -2.89 -105.47 15,681.9 88.79 327.16 6,104.4 6,048.2 12,093.6 -5,569.4 0.00 0.00 0.00 0.00 15,977.2 90.52 318.47 6,106.2 6,150.0 12,328.6 -5,747.7 3.00 0.59 -2.94 -78.76 15,983.1 90.53 318.30 6,106.1 6,049.9 12,332.9 -5,751.5 3.00 0.17 -3.00 -86.84 17,044.9 90.53 318.30 6,096.3 6,040.1 13,125.7 -6,457.9 0.00 0.00 0.00 0.00 17,071.6 89.74 318.40 6,096.2 6,040.0 13,145.7 -6,475.6 3.00 -2.98 0.38 172.78 17,114.2 89.73 317.12 6,096.4 6,040.2 13,177.2 -6,504.3 3.00 -0.01 -3.00 -90.20 18,147.9 89.73 317.12 6,101.2 6,045.0 13,934.7 -7,207.6 0.00 0.00 0.00 0.00 3/32012 10:05:44AM Page 3 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM_Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 Company: Well Planning-Pioneer-Oooguruk ND 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 L1 Design: ODSN-25 KE1 L1 wp03 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (bearing) (ft) ft (ft) (ft) (ft) (ft) 6,080.97 11,796.0 83.27 336.05 6,137.2 6,081.0 8,872.8 -3,408.8 6,040,013.95 466,571.09 0.00 9,447.07 ! Tie-in Survey 11,800.0 83.27 336.05 6,137.6 6,081.4 8,876.5 -3,410.4 6,040,017.59 466,569.50 0.01 9,451.04 11,830.0 83.27 336.05 6,141.2 6,085.0 8,903.7 -3,422.5 6,040,044.87 466,557.51 0.01 9,480.78 7" 11,856.0 83.27 336.05 6,144.2 6,088.0 8,927.3 -3,433.0 6,040,068.50 466,547.13 0.01 9,506.55 Start Dir 4°/100':11856'MD,6144.2'TVD:90°LT TF 11,886.0 83.28 334.84 6,147.7 6,091.5 8,954.4 -3,445.4 6,040,095.65 466,534.86 4.00 9,536.31 Start Dir 3°/100':11886'MD,6147.7'TVD 11,900.0 83.56 334.53 6,149.3 6,093.1 8,966.9 -3,451.3 6,040,108.24 466,528.97 3.00 9,550.21 12,000.0 85.56 332.29 6,158.8 6,102.6 9,058.0 -3,495.9 6,040,197.42 466,484.77 3.00 9,649.74 12,100.0 87.57 330.05 6,164.8 6,108.6 9,143.4 -3,544.0 6,040,285.04 466,437.00 3.00 9,749.52 12,200.0 89.58 327.83 6,167.3 6,111.1 9,229.0 -3,595.6 6,040,370.87 466,385.78 3.00 9,849.26 12,297.5 91.55 325.66 6,166.3 6,110.1 9,310.5 -3,649.0 6,040,452.60 466,332.66 3.00 9,946.23 End Dir:12297.5'MD,6166.3'ND 12,300.0 91.55 325.66 6,166.2 6,110.0 9,312.6 -3,650.4 6,040,454.67 466,331.26 0.00 9,948.71 12,400.0 91.55 325.66 6,163.5 6,107.3 9,395.2 -3,706.8 6,040,537.43 466,275.22 0.00 10,047.93 12,500.0 91.55 325.66 6,160.8 6,104.6 9,477.7 -3,763.2 6,040,620.20 466,219.17 0.00 10,147.15 12,600.0 91.55 325.66 6,158.1 6,101.9 9,560.2 -3,819.6 6,040,702.96 466,163.13 0.00 10,246.38 12,700.0 91.55 325.66 6,155.4 6,099.2 9,642.8 -3,876.0 6,040,785.72 466,107.09 0.00 10,345.60 12,800.0 91.55 325.66 6,152.7 6,496.5 9,725.3 -3,932.3 6,040,868.49 466,051.04 0.00 10,444.82 12,900.0 91.55 325.66 6,150.0 6,093.8 9,807.9 -3,988.7 6,040,951.25 465,995.00 0.00 10,544.04 13,000.0 91.55 325.66 6,147.3 6,091.1 9,890.4 -4,045.1 6,041,034.01 465,938.95 0.00 10,643.26 13,020.5 91.55 325.66 6,146.8 6,090.6 9,907.3 -4,056.7 6,041,050.98 465,927.46 0.00 10,663.60 Start Dir 3°/100':13020.5'MD,6146.8'TVD 13,043.1 91.41 325.00 6,146.2 6,090.0 9,925.9 -4,069.5 6,041,069.59 465,914.71 3.00 10,685.98 13,043.8 91.41 324.98 6,146.2 6,090.0 9,926.5 -4,069.9 6,041,070.20 465,914.28 3.00 10,686.72 N26 KE1 L1 V1 T1 13,101.1 91.40 323.26 6,144.8 6,088.6 9,972.9 -4,103.5 6,041,116.73 465,880.91 3.00 10,743.35 End Dir:13101.1'MD,6144.8'ND 13,200.0 91.40 323.26 6,142.4 6,086.2 10,052.1 -4,162.6 6,041,196.18 465,822.09 0.00 10,840.90 13,300.0 91.40 323.26 6,139.9 6,083.7 10,132.2 -4,222.5 6,041,276.53 465,762.62 0.00 10,939.52 13,400.0 91.40 323.26 6,137.5 6,081.3 10,212.3 -4,282.3 6,041,356.87 465,703.14 0.00 11,038.15 13,500.0 91.40 323.26 6,135.0 6,078.8 10,292.5 -4,342.1 6,041,437.21 465,643.67 0.00 11,136.78 13,604.0 91.40 323.29 6,132.6 6,076.4 10,372.6 -4,401.9 6,041,517.55 465,584.19 0.00 11,235.41 13,700.0 91.40 323.26 6,130.1 6,073.9 10,452.7 -4,461.7 6,041,597.89 465,524.72 0.00 11,334.04 13,800.0 91.40 323.26 6,127.7 6,071.5 10,532.8 -4,521.5 6,041,678.23 465,465.25 0.00 11,432.67 13,900.0 91.40 323.26 6,125.2 6,069.0 10,612.9 -4,581.3 6,041,758.58 465,405.77 0.00 11,531.30 14,000.0 91.40 323.26 6,122.8 6,066.6 10,693.0 -4,641.1 6,041,838.92 465,346.30 0.00 11,629.93 14,100.0 91.40 323.26 6,120.3 6,064.1 10,773.1 -4,700.9 6,041,919.26 465,286.82 0.00 11,728.56 14,200.0 91.40 323.26 6,117.9 6,061.7 10,853.2 -4,760.7 6,041,999.60 465,227.35 0.00 11,827.19 14,300.0 91.40 323.26 6,115.4 6,059.2 10,933.3 -4,820.5 6,042,079.94 465,167.87 0.00 11,925.82 14,400.0 91.40 323.26 6,113.0 6,056.8 11,013.4 -4,880.3 6,042,160.29 465,108.40 0.00 12,024.45 14,460.2 91.40 323.26 6,111.5 6,055.3 11,061.7 -4,916.3 6,042,208.65 465,072.60 0.00 12,083.83 Start Dir 3°/100':14460.2'MD,6111.5'TVD 3/9/2012 10:05:44AM Page 4 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM_Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 L1 Design: ODSN-25 KE1 L1 wp03 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +NI-S +E/-W Northing Easting DLS Vert Section (ft) (7) (bearing) (ft) ft (ft) (ft) (ft) (ft) 6,055.00 14,473.0 91.11 323.00 6,111.2 6,055.0 11,071.9 -4,924.0 6,042,218.95 465,064.94 3.00 12,096.49 N25 KE1 L1 V1 T2 14,473.1 91.11 323.00 6,111.2 6,055.0 11,072.0 -4,924.1 6,042,219.03 465,064.87 3.00 12,096.59 14,500.0 91.12 323.81 6,110.7 6,054.5 11,093.6 -4,940.1 6,042,240.65 465,048.96 3.00 12,123.09 14,600.0 91.13 326.81 6,108.7 6,052.5 11,175.8 -4,997.0 6,042,323.07 464,992.39 3.00 12,222.24 14,658.9 91.14 328.57 6,107.5 6,051.3 11,225.5 -5,028.5 6,042,372.96 464,961.12 3.00 12,280.90 End Dir:14658.9'MD,6107.5'TVD 14,700.0 91.14 328.57 6,106.7 6,050.5 11,260.6 -5,049.9 6,042,408.11 464,939.84 0.00 12,321.89 14,800.0 91.14 328.57 6,104.7 6,048.5 11,345.9 -5,102.0 6,042,493.62 464,888.06 0.00 12,421.62 14,900.0 91.14 328.57 6,102.7 6,046.5 11,431.2 -5,154.1 6,042,579.14 464,836.28 0.00 12,521.35 15,000.0 91.14 328.57 6,100.8 6,044.6 11,516.5 -5,206.3 6,042,664.65 464,784.50 0.00 12,621.07 15,100.0 91.14 328.57 6,098.8 6,042.6 11,601.9 -5,258.4 6,042,750.17 464,732.72 0.00 12,720.80 15,200.0 91.14 328.57 6,096.8 6,040.6 11,687.2 -5,310.5 6,042,835.68 464,680.94 0.00 12,820.53 15,218.4 91.14 328.57 6,096.4 6,040.2 11,702.9 -5,320.1 6,042,851.42 464,671.41 0.00 12,838.88 Start Dir 3°/100':15218.4'MD,6096.4'TVD 15,282.4 89.23 328.75 6,096.2 6,040.0 11,757.5 -5,353.4 6,042,906.21 464,638.35 3.00 12,902.73 N25 KE1 L1 V1 T3 15,300.0 89.09 328.24 6,096.5 6,040.3 11,772.5 -5,362.6 6,042,921.25 464,629.22 3.00 12,920.27 15,337.4 88.79 327.16 6,097.2 6,041.0 11,804.1 -5,382.6 6,042,952.93 464,609.37 3.00 12,957.53 End Dir:15337.4'MD,6097.2'TVD 15,400.0 88.79 327.16 6,098.5 6,442.3 11,856.7 -5,416.5 6,043,005.65 464,575.65 0.00 13,019.82 15,500.0 88.79 327.16 6,100.6 5,044.4 11,940.7 -5,470.7 6,043,089.86 464,521.78 0.00 13,119.34 15,600.0 88.79 327.16 6,102.7 6,046.5 12,024.7 -5,524.9 6,043,174.07 464,467.91 0.00 13,218.86 15,681.9 88.79 327.16 6,104.41 6,048.2 12,093.5 -5,569.3 6,043,243.04 464,423.79 0.00 13,300.37 Start Dir 3°/100':15681.9'MD,6104.47VD 15,700.0 88.90 326.63 6,104.8 6,048.6 12,108.7 -5,579.2 6,043,258.24 464,413.97 2.99 13,318.37 15,800.0 89.48 323.69 6,106.2 6,050.0 12,190.7 -5,636.4 6,043,340.52 464,357.19 3.00 13,417.50 15,900.0 90.07 320.75 6,106.6 6,050.4 12,269.8 -5,697.6 6,043,419.78 464,296.26 3.00 13,515.83 15,977.2 90.52 318.47 6,106.2 6,050.0 12,328.6 -5,747.7 6,043,478.80 464,246.46 3.00 13,591.08 15,977.7 90.52 318.46 6,106.2 6,050.0 12,328.9 -5,748.0 6,043,479.14 464,246.16 2.98 13,591.51 N25 KE1 L1 V1 T4 15,983.1 90.53 318.30 6,106.1 6,049.9 12,333.0 -5,751.5 6,043,483.20 464,242.58 2.98 13,596.76 End Mr:15983.1'MD,6106.1'TVD 16,000.0 90.53 318.30 6,106.0 6,049.8 12,345.6 -5,762.8 6,043,495.86 464,231.39 0.00 13,613.13 16,105.0 90.53 318.3f1 6,105.1 6,048.9 12,420.2 -5,829.3 6,043,570.78 464,165.18 0.00 13,710.00 16,200.0 90.53 318.30 6,104.1 6,047.9 12,494.9 -5,895.8 6,043,645.70 464,098.97 0.00 13,806.88 16,300.0 90.53 318.30 6,103.2 6,047.0 12,569.6 -5,962.4 6,043,720.62 464,032.76 0.00 13,903.75 16,400.0 90.53 318.30 6,102.3 6,046.1 12,644.2 -6,028.9 6,043,795.54 463,966.55 0.00 14,000.63 16,500.0 90.53 318.30 6,101.3 6,045.1 12,718.9 -6,095.4 6,043,870.46 463,900.33 0.00 14,097.51 16,600.0 90.53 318.30 6,100.4 6,044.2 12,793.5 -6,161.9 6,043,945.38 463,834.12 0.00 14,194.38 16,700.0 90.53 318.30 6,099.5 6,043.3 12,868.2 -6,228.4 6,044,020.31 463,767.91 0.00 14,291.26 16,800.0 90.53 318.30 6,098.5 6,042.3 12,942.9 -6,295.0 6,044,095.23 463,701.70 0.00 14,388.13 16,900.0 90.53 318.30 6,097.6 6,041.4 13,017.5 -6,361.5 6,044,170.15 463,635.49 0.00 14,485.01 17,000.0 90.53 318.30 6,096.7 6,040.5 13,092.2 -6,428.0 6,044,245.07 463,569.27 0.00 14,581.88 3/92012 10:05:44AM Page 5 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 L1 Design: ODSN-25 KE1 L1 wp03 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (bearing) (ft) ft (ft) (ft) (ft) (ft) 6,040.06 17,044.9 90.53 318.30 6,096.3 6,040.1 13,125.7 -6,457.9 6,044,278.71 463,539.55 0.00 14,625.38 Start Dir 3°/100':17044.9'MD,6096.3'TVD 17,071.6 89.74 318.40 6,096.2 6,040.0 13,145.7 -6,475.6 6,044,298.76 463,521.86 3.00 14,651.29 17,071.7 89.74 318.40 6,096.2 6,040.0 13,145.8 -6,475.7 6,044,298.82 463,521.80 0.00 14,651.37 N25 KE1 L1 V1 T5 17,100.0 89.74 317.55 6,096.3 6,040.1 13,166.8 -6,494.6 6,044,319.90 463,502.96 3.01 14,678.72 17,114.2 89.73 317.12 6,096.4 6,040.2 13,177.2 -5,504.2 6,044,330.38 463,493.38 3.00 14,692.42 End Dir:17114.2'MD,6096.4'TVD 17,200.0 89.73 317.12 6,096.8 6,040.6 13,240.1 -6,562.6 6,044,393.48 463,435.26 0.00 14,775.09 17,300.0 89.73 317.12 6,097.3 6,041.1 13,313.4 -6,630.7 6,044,467.03 463,367.52 0.00 14,871.44 17,400.0 89.73 317.12 6,097.7 6,041.5 13,386.6 -6,698.7 6,044,540.58 463,299.78 0.00 14,967.79 17,500.0 89.73 317.12 6,098.2 6,042.0 13,459.9 -6,766.8 6,044,614.13 463,232.05 0.00 15,064.14 17,600.0 89.73 317.12 6,098.7 6,042.6 13,533.2 -6,834.8 6,044,687.67 463,164.31 0.00 15,160.49 17,700.0 89.73 317.12 6,099.1 6,1142.9 13,606.5 -6,902.8 6,044,761.22 463,096.57 0.00 15,256.83 17,800.0 89.73 317.12 6,099.6 6,043.4 13,(79.8 -6,970.9 6,044,834.77 463,028.83 0.00 15,353.18 17,900.0 89.73 317.12 6,100.0 6,043.8 13,733.0 -7,038.9 6,044,908.32 462,961.09 0.00 15,449.53 18,000.0 89.73 317.12 6,100.5 6,044.3 13,828.3 -7,107.0 6,044,981.87 462,893.35 0.00 15,545.88 18,100.0 89.73 317.12 6,101.0 6,044.8 13,899.( -7,175.0 6,045,055.41 462,825.62 0.00 15,642.23 18,147.8 89.73 317.12 6,101.2 6,045.0 13,934.6 -7,207.5 6,045,090.57 462,793.24 0.00 15,688.29 Total Depth:18147.9'MD,6101.2'TVD 18,147.9 89.73 317.12 6,101.2 6,(45.0 13,934.7 -7,207.6 6,045,090.64 462,793.17 0.00 15,688.38 4.5-N25 KE1 L1 V1 TR Targets Target Name -hit/miss tarsal Dip Angle Dip Dir. TVD +N/-S +E/-W Northing Easting -Shape (?) (bearing (ft) (ft) (ft) (ft) (ft) N25 Kd1 L1 V1 -, 0.00 359.72 6,096.2 13,145.9 -6,475.5 6,044,299.00 463,522.00 -plan hits target -Point N25 KE1 L1 V1 T2 0.00 359.73 6,111.2 11,072.0 -4,923.9 6,042,219.00 465,065.00 -plan hits target -Point N25 KE1 L1 V1 T1 0.00 359.74 6,146.2 9,926.3 -4,070.2 6,041,070.00 465,914.00 -plan hits target -Point N25 KE1 L1 V1 T6 0.00 359.71 6,101.2 13,935.1 -7,207.8 6,045,091.00 462,793.00 -plan hits target -Point N25 KE1 L1 V1 T3 0.00 359.73 6,096.2 11,757.3 -5,353.8 6,042,906.00 464,638.00 -plan hits target -Point N25 KE1 L1 V1 T4 0.00 359.73 6,106.2 12,328.8 -5,748.1 6,043,479.00 464,246.00 -plan hits target -Point 3/9/2012 10:05:44AM Page 6 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM_Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 L1 Design: ODSN-25 KE1 L1 wp03 Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (") (") 5,241.5 3,261.0 11 3/4" 11-3/4 14-1/2 9,944.4 5,506.0 9 5/8" 9-5/8 11-3/4 11,830.0 6,141.2 7" 7 8-1/2 18,147.9 6,101.2 4.5 4-1/2 6-1/8 Plan Annotations Measured Vertical Local Coordinates Depth Depth +N/-S +EI-W j (ft) (ft) (ft) (ft) Comment 11,796.0 6,137.2 8,872.8 -3,408.8 Tie-in Survey 11,856.0 6,144.2 8,927.3 -3,433.0 Start Dir 4°/100':11856'MD,6144.2'TVD:90°LT TF 11,886.0 6,147.7 8,954.4 -3,445.4 Start Dir 3°/100':11886'MD,6147.7'TVD 12,297.5 6,166.3 9,310.5 -3,649.0 End Dir:12297.5'MD,6166.3'TVD 13,020.5 6,146.8 9,907.3 -4,056.7 Start Dir 3°/100':13020.5'MD,6146.8TVD 13,101.1 6,144.8 9,972.9 -4,103.5 End Dir:13101.1'MD,6144.8'TVD 14,460.2 6,111.5 11,061.7 -4,916.3 Start Dir 3°/100':14460.2'MD,6111.5'TVD 14,658.9 6,107.5 11,225.5 -5,02E.5 End Dir:14658.9'MD,6107.5'TVD 15,218.4 6,096.4 11,702.9 -5,320.1 Start Dir 3°/100':15218.4'MD,6096.4'TVD 15,337.4 6,097.2 11,804.1 -5,382.6 End Dir:15337.4'MD,6097.2'TVD 15,681.9 6,104.4 12,093.5 -5,569.3 Start Dir 3°/100':15681.9'MD,6104.4'TVD 15,983.1 6,106.1 12,333.0 -5,751.5 End Dir:15983.1'MD,6106.1'TVD 17,044.9 6,096.3 13,125.7 -6,457.9 Start Dir 3°/100':17044.9'MD,6096.3'TVD 17,114.2 6,096.4 13,177.2 -6,504.2 End Dir:17114.2'MD,6096.4'TVD 18,147.8 6,101.2 13,934.6 -7,207.5 Total Depth:18147.9'MD,6101.2'TVD 3/9/2012 10:05:44AM Page 7 COMPASS 2003.16 Build 42 Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN-25 ODSN-25 KE1 L1 ODSN-25 KE1 L1 wp03 Anticollision Summary Report 09 March, 2012 Y W o '_-` O ,-.1N i i i i S S ,iiill ..110,41 t PPPP % . . ' i illiniAMIkilillill cn l�, � , a8.'rmmo� u'� .„..,„,,,q,„„ N N F N i� */ �� U E8888m 1mR 8anm�arvm8 aanm8a�C4yS$'m.`m $R A$ ppyy pp7Rz ^ Z 8 o8888888❑ , , ' ,, 4 O > w c upNo n-. mm 101 N 40:40MUMIWIP p c 0 yaa: -aaan,hn J OE C U O LL yE ,', ` � ` (11 1. dp ,,,,, o ^ Bmrvmryffiqq H z , 8.88ffiffi866Pte2:5353?* a mro � " FFArY3Sg�� KKpRR�, �, , BG3mmmmmaamRttggR088 �• d ,, , E ❑ ooiryi .an-av d mR 0.o ` _ 11$ o U N m G O r-• u N F Y O/ W Z V 0 0 0 0p p 0 0 0 0 0 O ,2 t0`! t2') V 2 0 g 2 T o U cU % F E4S, 1 r `; =N U o N Q E� i am 0 0 .502=S U E. Ni- wa 00000000 0 0 0 0 0 0 0 m u N n 4 9 S gm o y p o O C N LL % rnm ym D_ o 2 c O c r m w N w ' 3 i. W N U y\ o y11101.1.1 O 4101°‘11, 000100Millifte as =o NXXX/ ,11,11111-1 0 ozoz iT(tf1It$tttiAll I co ' LL u_wX aC�XaC ` `` ' o�w tr woy a_yy CM 3 ZgCNfNV NNN r� d�GQpo eliV • =h Vzi lZ/]7z1 fzA iu `` ` , IPE ZED C] W q n C 0 0 0 0 ` 3 U”743e, F O O O 411111.A, t71+11111111.111 ('? 11111114111111 O g +0 ill. eF EE;C 0 am ma j 'L O§E S r3 N O.r 4 N 4 2 Pioneer Natural Resources Anticollision Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.2ft(Nabors 19AC) Reference Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.2ft(Nabors 19AC) Site Error: 0.0ft North Reference: True Reference Well: ODSN-25 Survey Calculation Method: Minimum Curvature Well Error: 0.0ft Output errors are at 2.00 sigma Reference Wellbore ODSN-25 KE1 L1 Database: EDM Alaska Reference Design: ODSN-25 KE1 L1 wp03 Offset TVD Reference: Offset Datum Reference ODSN-25 KE1 L1 wp03 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer( Interpolation Method: MD Interval 25.0ft Error Model: ISCWSA Depth Range: 11,796.0 to 18,147.9ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 2,010.5ft Error Surface: Elliptical Conic Survey Tool Program Date 3/9/2012 From To (ft) (ft) Survey(Wellbore) Tool(lame Description 42.7 600.0 ODSN-25 KE1 wp08(ODSN-25 KE1) SR-Gyro-SS Fixed:v2:surface readout gyro single shot 600.0 4,500.0 ODSN-25 KE1 wp08(ODSN-25 KE1) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 4,500.0 8,500.0 ODSN-25 KE1 wp08(ODSN-25 KE1) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 8,500.0 11,796.0 ODSN-25 KE1 wp08(ODSN-25 KE1 j MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 11,796.0 18,147.9 ODSN-25 KE1 L1 wp03(ODSN-2g KE1 L' MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) Oooguruk Drill Site ODSK-33-ODSK-33 KupA-ODSK-33 KupA Out of range ODSK-7i-ODSN-7i Ivik Kup-O1:1SN-7i Mk Kup w Out of range ODSN-1 -ODSN-1 KE3-ODSN-1 KE3 wp18 Out of range ODSN-1 -ODSN-1 KE3 PB1 -ODSN-1 KE3 PB1 Out of range ODSN-1 -ODSN-1 KE31161 Original-ODSN-1 K Out of range ODSN-2-ODSN-2 PN3 ext-ODSN-2 PN3 ext wp Out of range ODSN-20-ODSK-20 KE4-ODSN-20 KE4 wp05 i Out of range ODSN-24-ODSt1-24 KE5-OCSN-24 KE5 wp04 t Out of range ODSN-25-ODSN-25 KE1 -ODSN-25 KE1 wp08 11,800.0 11,800.0 0.0 0.65 -0.6 FAIL-NOERROR ODSN-26i-CDSN-26i KE2-ODSN-26i KE2 14,493.2 14,750.0 1,694.0 405.47 1,288.5 Pass-Major Risk ODSN-27i-ODSN-27i 1N4-ODSN-27i IN4 wp08 Out of range ODSN-3i-ODSN-3i IN4 ext-ODSN-3i IN4 wp01 Out of range ODSN-4-ODSN-4 PN5 ext-ODSN-4 PN5 ext wp 15,869.7 16,925.0 1,753.5 478.22 1,279.2 Pass-Major Risk 3/9/2012 9:30:43AM Page 2 of 3 COMPASS 2003.16 Build 42 ! IF , Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN-25 - Slot ODS-25 ODSN-25 KE1 Plan: ODSN-25 KE1 wpOa Standard Proposal Report 09 March, 2012 HALLIBURTON Sperry Drilling Services PIONEERHALLIBURTON REFERENCE INFORMATION Co-ordinate(NM)Reference:Well ODSN-25-Sbt ODS-25,True North NATURAL RESOURCES Sperry Drilling Vertical(TVD)Reference:42.7'+13.5'656.2f(Ntbors 19AC) Measured Depth Reference:42.7'+13.5'0 56.21t(Nabors 19AC) Calculation Method:Minimum Curvature COMPANY DETAILS: Well Planning-Pioneer-Oooguruk Calculation Method:Minimum Curvature SECTION DETAILS Error System:ISCWSA Scan Method: Tray.Cylinder North Sec MD Inc Azi TVD +N/-S +E/-W DLeg TFace VSec Target Error Surface: Elliptical Conic 1 42.7 0.00 0.00 42.7 0.0 0.0 0.00 0.00 0.0 Warning Method: Rules Based 2 200.0 0.00 0.00 200.0 0.0 0.0 0.00 0.00 0.0 3 771.4 20.00 5.00 759.9 98.3 8.6 3.50 5.00 86.8 4 2189.2 61.74 337.15 1815.7 959.3 -224.7 3.15 36.84 969.4 Project: Oooguruk Development 5 8634.5 61.74 337.15 4867.6 6190.6 -2429.5 0.00 0.00 6646.0 Site: Oooguruk Drill Site 6 9042.4 60.67 34164 5064.2 6525.1 -2555.3 1.00 106.24 7002.9 K20 31 ext V1 fault t1 g 7 9045.1 60.67 341.67 5065.5 6527.3 -2556.0 1.00 90.68 7005.2 Well: ODSN-25 8 10671.6 60.67 341.67 5862.2 7873.3 -3002.0 0.00 0.00 8417.5 9 11469.4 84.00 336.00 6102.8 8576.1 -3276.7 3.00 -14.02 9171.6 Wellbore: ODSN-25 KE1 10 11769.4 84.00 336.00 6134.2 8848.7 -3388.1 0.00 0.00 9469.9 K2031extV1T1 Plan:ODSN-25 KE1 wp08 11 11792.0 83.27 336.05 6136.7 8869.1 -3407.2 3.25 175.96 9492.3 12 12178.8 83.27 336.05 6182.0 9220.2 -3563.1 0.00 0.00 9876.4 SURVEY PROGRAM 13 12420.3 90.00 332.00 6196.2 9436.8 -36686 3.25 -31.15 10117.2 K20 31ext V1T2 14 12642.0 93.59 326.40 6189.2 9627.1 -37820 3.00 57.25 10336.8 15 13540.6 93.59 326.40 6132.9 10374.1 -4278.4 0.00 0.00 11219.7 Date:2012-03-09T00:00:00 Validated:Yes Version: 16 13755.6 90.00 331.76 6126.2 10558.3 -4388.7 3.00 123.74 11432.7 17 13810.6 88.35 331.82 6127.0 10606.7 -4414.7 3.00 177.85 11487.4 Depth From Depth To Survey/Plan Tool 18 14444.6 88.35 331.82 6145.2 11165.4 -4714.0 0.00 0.00 12119.1 42.7 600.0 ODSN-25 KE1 wp08 SR-Gyro-SS 19 14512.3 90.00 330.64 6146.2 11224.7 -4748.5 3.00 -35.73 12186.5 K20 31ext V1T4 600.0 5200.0 ODSN-25 KE1 wp08 MWD+IFR2+MS+sag 20 14689.2 95.31 330.65 6138.0 11378.7 -4833.1 3.00 0.13 12362.2 5200.0 9950.0 ODSN-25 KE1 wp08 MWD+IFR2+MS+sag 21 14948.0 95.31 330.68 6114.1 11603.3 -4959.4 0.00 0.00 12618.5 9950.0 11800.0 ODSN-25 KE1 wp08 MWD+IFR2+MS+sag 22 15071.6 92.00 328.96 6106.2 11709.9 -5021.5 3.00 -152.99 12741.0 11800.0 15509.9 ODSN-25 KE1 wp08 MWD+IFR2+MS+sag 23 15105.8 93.02 329.00 6104.7 11739.1 -5039.1 3.00 2.16 12774.8 _ 24 15226.8 93.02 329.00 6098.3 11842.7 -5101.3 0.00 0.00 12894.6 ODSN-25/ODSN-25 KEI wp08 Total Depth:15509.9'MD,6076.2'TVD 25 15261.4 94.00 328.65 6096.2 11872.3 -5119.2 3.00 -1998 12928.9 K20 31 ext V1 T6 26 15282.9 94.84 328.65 6094.6 11890.6 5130.3 3.00 0.00 12950.1 12800- 27 15509.9 94.64 328.65 6076.2 12083.8 5248.1 0.00 0.00 13174.2 K2031extV1T7 - .Fed Dir:15282.9'MD,6094.6'TVD "4 1/2" - -'StartDir 31/100':15226.8'MD,6098.3'TVD 12000- __---- - /'r -- -End Dir 15105.8'MD,6104.7 TVD WELLBORE TARGET DETAILS(MAP CO-ORDINATES) - / ____ - / / Start Dir 31/100':14948'MD,6114.1'TVD Name TVD +1,1/-S +E/-W Northing Eashng Shape - LKzo 31ext V/�T7I _ --__ K20 31 ext V1 fault 11 5064.2 6525.1 -2555.3 6037663.00 467415.00 Point -11200- // / / / --_End Dir:14689.2'MD,6138'TVD K20 31 ext V177 6076.2 12083.8 -5248.1 6043232.00 464745.00 Point _ / -- 1(20 31ext VIT6 I - K20 31 ext V176 6096.2 11872.3 -5119.2 6043020.00 464873.00 Pant -- Start Dir 3;-/100': 14444.6'MD,6145.21ND K20 31 ext V1 T5 6106.2 11709.7 -5021.5 6042857.00 464970.00 Point _ / / ----. K20 31 ext V1 T3 6128.2 10558.1 -4388.8 6041703.00 465598.00 Point 10400- / / ' --_-__End Dir 13810.6'MD,6127 TVD K20 31ext V1T1 6134.2 8848.9 -3397.8 6039990.00 466582.00 Point I _.'-- � K20 31ext V1T4 6146.2 11224.7 -4746.5 6042371.00 465243.00 Point IK2031ext VITSI Start Dir 3°/100':13540.6'MD,6132.9TVD K20 31ext V1T2 6196.2 9427.9 -3664.26040570.00 466318.00 Point 5 - 9600- 1 / I 'End Dir:12642'MD,6189.2'TVD - / / _ C - IK203lext VITA'. - WELL DETAILS: ODSN-25 • N - ' Start Dir 3%157:12420.3'MD,6196.2TVD 8800- • _ -- Ground Level: 13.5 + _ / +N/-S +E/-W Northing Fasting Latittude Longitude Slot _ 11(2031ext V1T31 _ - See Dir 3.25°/100':12178.8'MD,6182TVD 0.0 0.0 6031128.32 469943.64 70.496 -150.246 ODS-25 p - 7 \(G°- ' 6� . IK2031ext VITA -End Dir 11792'MD,6136.7TVD CASING DETAILS I'� - TVD MD Name Size - K2031extVITI , 55 - . n• 7200- I * 3261.0 5241.5 113/4" 11-3/4 rStart Dlr 3.25°/100':117694'MD,6134.2TVD 5506.0 9944.4 9 5/8" 9-5/8 9 5/8" 6140.0 11820.0 7' 7 6076.2 15509.9 4 1/2" 4-1/2 End Dir:11469.4'MD,6102.8'TVD 6400- 'S0 - IK2031ext V'l fault tl Start Dir 3°/100':10671.6'MD,5862.2'TVD 5600- h'u DDI=6.65 End Dir:9045.1'MD,5065.5'TVD 4800 , - Start Dir 11/100':8634.5'MD,4867.6'7VD 4000 9500 11 3/4" 3200- - 1t0B 2400- - 2500 End Dir:2189.2'MD,1815.7 TVD 'Start Dir 3.15°/100':771.4'MD,759.9'1VD 1600- - 2�•-- /Start Dir 3.5°/100':200'MD,200'TVD:5°RT TF • 800- -- �5ao - --- 0- 500 IIIIII : III II IIIIIII II I IIIIJIIIIIIItI III IIIIIIIII IIIIIILIIIIIIIIIIIIIIIIIIIiiiiI Ilii -6400 -5600 -4800 -4000 -3200 -2400 -1600 -800 0 800 1600 2400 3200 4000 4800 5600 6400 7200 8000 West(-)/East(+)(2000 ft/in) ❑ ❑ Z w N Q m 1- N 1- O m m H 5 5 H H 138 i-,) iN W - 0 olo co v N '"e E ani ni an ai v m 1) bb ❑ 0 p (0p C'.1 - 0 "y M M M M M M N >I- O Z - O � K t m� f ❑ 0 —v c r to rn N N1 S - i0 W a N —v- _ C N0(d1L m N N \ N' O 1:, Z'0(?U 800 mQ 00)N m m m MQ N m r N- u)N m O m m 0) N N♦ N \ N \ �� - O p��e >2O8OmiQ OO�I�OmN,Bp'MOrO�OmON(fp`')m QrOQiNNr O ' V r \\ 0111 --r,_ _ ..- g v O O++ O1-N00000000�.-.-NNN N NN N N NM 0 D m \ O `_ V. \\❑ 1 > - =r--F..1 b O OQm NOmO m`,20 QN MMpO)m Om00 N 2 -0 ❑ ♦\ 1 to - 0 al PSY9 §O 8g8M88000)O''(N Orm8r"80)"00)00 .Jo N CO c W \ ♦� ' N /M —O tr C Foo m0o00ovono��oNl\ moo�Nooioo N ❑ W F R \ 1 v // f0NN - aBa o .? \.m♦ \\ 1 1 / Y - '- '' .� 2'88,9`,288 88o`,no mono 888 V) - r • il to 0`,2�008880N0 N00088588888008 V N ❑ \11 // - O z g a X000) 0 .-0N0 o OOC n 0NN0No 00 0 o 0 lL > > M ❑\ ♦ \H/ —M ; g r 0 N - el e � w >000NUN00N�N�m0Qrr00) '00) -MNM. 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I I ) w4;,,,[ - d a Q CD N O N N O N O M m O)0 f�N 1`� (h N - --- ¢ 000nNNNMONu)m000000 t 1 ¢ ESN .-NNMQU)121InnI2mmmm m 0 ' w Z-o Q >M-N`,Om0LN I- m m I I )1 —O 0 N >`,riaD O)� 10 O 1 (p 0 '(� O_ 1 � I - N Z p v)v o rn 1- *N'q'q�V M7 V'7 F' -O I - ��-,66 O W '- C ¢ `,LU 0)Lv'i 0 mMn- N- O W II' i , 1 ) Z .-_8 U w I?'r)N0000 —V •• , I 1 —m LL' ?`, N_OOO.N-N I' I J C - Q 000N ¢ m�.-'-.-m'- U) I I • I 1 Y H - ❑m O V r W I - 00 HML0m00 LL' II I ' G 0 NNNNNNNN C I' •I Y - V 0Q10gT00(0m �9 ' I; - >8 0 - 3 ~0000000000 LL > 0 I , , 1 , ' o m V - 00 Z H _OH) (0it t I O I m - co 0 K 0i I, 0) Y (0 r m N M Q N N I O To FF H H H H N F 2 r 0 N 0 Q2 CC cc N2 N N d N N d d d I F3 : 0 Y o a 7 m M M M M M M M M O O Q H 01 E000eo0oo 0 0) 1 CO N F- o m Y al Mnnn N r CO \ I N Y I H G O O N I FO- m 0 Oo \ N C O N \ U \ I CO H a v Q ° w ♦ k ' oy O o ax 3 U M {0 \ CS N H 0 w W tiu�m N\ \\ r --U € CD 3 > i N N 124 w •c •-E > a3 co c c co --U- d a � 7 N a O O y y 0 d' :1' a m 0 O 000 �wj c 3 $Kts O c m Y 00000 (Lr w Nti 0 .li ,iN1YWg II ( I I F I 11111 I I I I III I III I I I I I I I I I I I H I I II 11 II I I I I I II I I I I I I I I I I I I I I I F 11111 ` 0 a o3 O < w 0 0 0 0 0 0 0 0 0 0 0 0 0 o c 'Op h 3 ,a 4 m C 3 0 0 0 O 0 0 0 0 0 0 0 0 O c 0) V IN n N N N O) f0 M C �� , V CI' N I N N M V V N CO N a OM (u OSLL)41daa Leonie erul 3 0 U Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM_Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 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 ti:sing geodetic scale factor Site Oooguruk Drill Site Site Position: Northing: 6,031,151.32ft Latitude: 70.496 From: Map Easting: 469,920.45ft Longitude: -150.246 Position Uncertainty: 0.0 ft Slot Radius: " Grid Convergence: -0.23? Well ODSN-25-Slot ODS-25 Well Position +N/-S 0.0 ft Northing: 6,031,128.32 ft Latitude: 70.496 +El-W 0.0 ft Easting: 469,943.64ft Longitude: -150.246 Position Uncertainty 0.0 ft Wellhead Elevation: ft Sround Level: 13.5ft Wellbore ODSN-25 KE1 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (?) 12) (nT) IGRF200510 12/31/2009 21.99 80.81 57,759 Design ODSN-25 KE1 wp08 Audit Notes: Version: Phase: PLAN Tie On Depth: 42.7 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (bearing) 42.7 0.0 0.0 336.52 3/9/2012 9:06:51AM Page 2 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Plan Sections Measured Vertical TVD Dogleg Build Turn Depth Inclination Azimuth Depth System +N/-S +EI-W Rate Rate Rate Tool Face (ft) (?) (bearin (ft) ft (ft) (ft) (?/100ft) (?/100ft) (?/100ft) (?) 42.7 0.00 0.00 42.7 -13.5 0.0 0.0 0.00 0.00 0.00 0.00 200.0 0.00 0.00 200.0 143.8 0.0 0.0 0.00 0.00 0.00 0.00 771.4 20.00 5.00 759.9 703.7 98.3 8.6 3.50 3.50 0.00 5.00 2,189.2 61.74 337.15 1,815.7 1,759.5 959.3 -224.7 3.15 2.94 -1.96 -35.84 1 8,634.5 61.74 337.15 4,867.6 4,811.4 6,190.6 -2,429.5 0.00 0.00 0.00 0.00 9,042.4 60.67 341.64 5,064.2 5,008.0 6,525.1 -2,555.3 1.00 -0.26 1.10 106.24 9,045.1 60.67 341.67 5,065.5 5,009.3 6,527.3 -2,556.0 1.00 -0.01 1.15 90.68 10,671.6 60.67 341.67 5,862.2 5,806.0 7,873.3 -3,002.0 0.00 0.00 0.00 0.00 11,469.4 84.00 336.00 6,102.8 6,046.6 8,570.1 -3,276.7 3.00 2.92 -0.71 -14.02 11,769.4 84.00 336.00 6,134.2 6,078.0 8,848.7 -3,398.1 0.00 0.00 0.00 0.00 11,792.0 83.27 336.05 6,136.7 6,080.5 8,869.1 -3,407.2 3.25 -3.24 0.23 175.96 12,178.8 83.27 336.05 6,182.0 6,125.8 9,220.2 -3,563.1 0.00 0.00 0.00 0.00 12,420.3 90.00 332.00 6,196.2 6,140.0 9,436.8 -3,668.6 3.25 2.79 -1.68 -31.15 12,642.0 93.59 326.40 6,189.2 6,133.0 9,627.1 -3,782.0 3.00 1.62 -2.53 -57.25 13,540.6 93.59 326.40 6,132.9 6,076.7 10,374.1 -4,278.4 0.00 0.00 0.00 0.00 13,755.6 90.00 331.76 6,126.2 6,070.0 10,558.3 -4,388.7 3.00 -1.67 2.49 123.74 13,810.6 88.35 331.82 6,127.0 6,070.8 10,606.7 -4,414.7 3.00 -3.00 0.11 177.85 14,444.6 88.35 331.82 6,145.2 6,089.0 11,165.4 -4,714.0 0.00 0.00 0.00 0.00 14,512.3 90.00 330.64 6,146.2 6,090.0 11,224.7 -4,746.5 3.00 2.44 -1.75 -35.73 14,689.2 95.31 330.65 6,138.0 6,081.8 11,378.7 -4,833.1 3.00 3.00 0.01 0.13 14,948.0 95.31 330.65 6,114.1 6,057.9 11,603.2 -4,959.4 0.00 0.00 0.00 0.00 15,071.6 92.00 328.96 6,106.2 6,050.0 11,709.9 -5,021.5 3.00 -2.67 -1.36 -152.99 15,105.8 93.02 229.00 6,104.7 6,048.5 11,739.1 -5,039.1 3.00 3.00 0.11 2.16 15,226.8 93.02 329.00 6,098.3 6,042.1 11,842.7 -5,101.3 0.00 0.00 0.00 0.00 15,261.4 94.00 328.65 6,096.2 6,040.0 11,872.3 -5,119.2 3.00 2.82 -1.03 -19.98 15,282.9 94.64 328.65 6,094.6 6,038.4 11,890.6 -5,130.3 3.00 3.00 0.00 0.00 15,509.9 94.64 328.65 6,076.2 6,020.0 12,083.8 -5,248.1 0.00 0.00 0.00 0.00 3/9!2012 9:06:51 AM Page 3 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTOIsi Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (bearing) (ft) ft (ft) (ft) (ft) (ft) -13.50 42.7 0.00 0.00 42.7 -13.5 0.0 0.0 6,031,128.32 469,943.64 0.00 0.00 100.0 0.00 0.00 100.0 43.8 0.0 0.0 6,031,128.32 469,943.64 0.00 0.00 200.0 0.00 0.00 200.0 143.8 0.0 0.0 6,031,128.32 469,943.64 0.0G 0.00 Start Dir 3.5°/100':200'MD,200'TVD:5°RT TF 300.0 3.50 5.00 299.9 243.7 3.0 0.3 6,031,131.36 469,943.92 3.50 2.68 400.0 7.00 5.00 399.5 343.3 12.2 1.1 6,031,140.47 469,944.75 3.50 10.73 500.0 10.50 5.00 498.3 442.1 27.3 2.4 6,031,155.62 469,946.14 3.50 24.10 600.0 14.00 5.00 596.0 539.8 48.4 4.2 6,031,176.74 469,948.07 3.50 42.74 700.0 17.50 5.00 692.3 636.1 75.5 6.6 6,031,203.76 469,950.55 3.50 66.60 771.4 20.00 5.00 759.9 703.7 98.3 8.6 6,031,226.61 469,952.64 3.50 86.77 Start Dir 3.15°/100':771.4'MD,759.9'TVD 800.0 20.74 3.51 786.7 730.5 108.3 9.3 6,031,236.54 469,953.42 3.15 95.58 858.6 22.28 0.76 841.2 785.0 129.7 10.1 6,031,258.00 469,954.29 3.15 114.96 Top of Permafrost 900.0 23.40 359.02 879.4 823.2 145.8 10.1 6,031,274.06 469,954.31 3.15 129.71 1,000.0 26.16 355.42 970.1 913.9 187.6 8.0 6,031,315.91 469,952.39 3.15 168.93 1,100.0 29.00 352.47 1,058.8 1,002.6 233.7 3.0 6,031,361.94 469,947.63 3.15 213.11 1,200.0 31.90 350.01 1,145.0 1,088.8 283.7 -4.7 6,031,412.04 469,940.08 3.15 262.12 1,300.0 34.83 347.92 1,228.5 1,172.3 337.7 -15.3 6,031,466.03 469,929.73 3.15 315.82 1,400.0 37.79 346.13 1,309.1 1,252.9 395.4 -28.6 6,031,523.76 469,916.64 3.15 374.04 1,500.0 40.78 344.54 1,386.4 1,:30.2 456.6 -44.7 6,031,585.06 469,900.83 3.15 436.61 1,600.0 43.79 343.15 1,460.4 1,404.2 521.2 -63.4 6,031,649.74 469,882.35 3.15 503.34 1,700.0 46.81 341.90 1,530.8 1,474.6 589.0 -84.8 6,031,717.60 469,861.26 3.15 574.02 1,752.6 48.41 341.29 1,566.2 1,510.0 625.9 -97.0 6,031,754.49 469,849.15 3.15 612.70 Base of Permafrost 1,800.0 49.85 340.77 1,597.2 1,541.0 659.8 -108.7 6,031,788.44 469,837.63 3.15 648.44 1,900.4 52.89 889.73 1,659.7 1,603.5 733.3 -135.1 6,031,862.05 469,811.53 3.15 726.39 2,000.0 55.94 338.78 1,717.8 1,661.6 809.3 -163.9 6,031,938.20 469,783.02 3.15 807.61 2,100.0 59.00 337.89 1,771.6 1,715.4 887.6 -195.0 6,032,016.66 469,752.21 3.15 891.87 2,189.2 61.74 337.15 1,815.7 1,759.5 959.3 -224.7 6,032,088.41 469 722.85 3.15 969.39 End Mr:2189.2'MD,1815.7'TVD 2,200.0 61.74 337.15 1,820.8 1,764.6 968.0 -228.4 6,032,097.19 469,719.19 0.00 978.90 2,300.0 61.74 337.15 1,868.2 1,812.0 1,049.2 -262.6 6,032,178.48 469,685.32 0.00 1,066.98 2,400.0 61.74 337.15 1,915.5 1,859.3 1,130.4 -296.8 6,032,259.78 469,651.44 0.00 1,155.05 2,500.0 61.74 337.15 1,962.9 1,906.7 1,211.5 -331.0 6,032,341.07 469,617.57 0.00 1,243.12 2,600.0 61.74 337.15 2,010.2 1,954.0 1,292.7 -365.2 6,032,422.36 469,583.69 0.00 1,331.20 2,700.0 61.74 337.15 2,057.6 2,001.4 1,373.9 -399.4 6,032,503.66 469,549.82 0.00 1,419.27 2,800.0 61.74 337.15 2,104.9 2,048.7 1,455.0 -433.6 6,032,584.95 469,515.94 0.00 1,507,34 2,900.0 61.74 337.15 2,152.3 2,096.1 1,536.2 -467.8 6,032,666.25 469,482.06 0.00 1,595.42 3,000.0 61.74 337.15 2,199.6 2,143.4 1,617.4 -502.0 6,032,747.54 469,448.19 0.00 1,683.49 3,100.0 61.74 337.15 2,247.0 2,190.8 1,698.5 -536.3 6,032,828.83 469,414.31 0.00 1,771.56 3,197.6 61.74 337.15 2,293.2 2,237.0 1,777.8 -569.7 6,032,908.21 469,381.24 0.00 1,857.56 Top West Sak 3,200.0 61.74 337.15 2,294.3 2,238.1 1,779.7 -570.5 6,032,910.13 469,380.44 0.00 1,859.64 3,300.0 61.74 337.15 2,341.7 2,285.5 1,860.9 -604.7 6,032,991.42 469,346.56 0.00 1,947.71 1 3/9/2012 9:06:51AM Page 4 COMPASS 2003.16 Build 42 Pioneer Natural Resources H A LL I B U RTO N Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25 Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +NI-S +E/-W Northing Easting DLS Vert Section (ft) (7) (bearing) (ft) ft (ft) (ft) (ft) (ft) 2,332.82 3,400.0 61.74 337.15 2,389.0 2,332.8 1,942.0 -638.9 6,033,072.72 469,312.69 0.00 2,035.79 3,500.0 61.74 337.15 2,436.4 2,380.2 2,023.2 -673.1 6,033,154.01 469,278.81 0.00 2,123.86 3,600.0 61.74 337.15 2,483.7 2,427.5 2,104.4 -707.3 8,033,235.31 469,244.94 0.00 2,211.93 3,700.0 61.74 337.15 2,531.1 2,474.9 2,185.5 -741.5 6,033,316.60 469,211.06 0.00 2,300.01 3,800.0 61.74 337.15 2,578.4 2,522.2 2,266.7 -775.7 6,033,397.89 469,177.18 0.00 2,388.08 3,900.0 61.74 337.15 2,625.8 2,569.6 2,347.9 -809.9 6,033,479.19 469,143.31 0.00 2,476.15 4,000.0 61.74 337.15 2,673.1 2,616.9 2,429.0 -844.1 6,033,560.48 469,109.43 0.00 2,564.23 4,100.0 61.74 337.15 2,720.5 2,664.3 2,510.2 -878.3 6,033,641.78 469,075.56 0.00 2,652.30 4,200.0 61.74 337.15 2,767.8 2,711.6 2,591.3 -912.5 6,033,723.07 469,041.68 0.00 2,740.37 4,300.0 61.74 337.15 2,815.2 2,759.0 2,872.5 -946.7 6,033,804.37 469,007.81 0.00 2,828.45 4,400.0 61.74 337.15 2,862.5 2,806.3 2,753.7 -980.9 6,033,885.66 468,973.93 0.00 2,916.52 4,496.4 61.74 337.15 2,908.2 2,852.0 2,832.0 -1,013.9 6,033,964.06 468,941.26 0.00 3,001.46 Cret tuffs 4,500.0 61.74 337.15 2,909.9 2,853.7 2,834.8 -1,015.2 6,033,966.95 468,940.06 0.00 3,004.59 4,600.0 61.74 337.15 2,957.2 2,901.0 2,916.0 -1,049.4 6,034,048.25 468,906.18 0.00 3,092.67 4,700.0 61.74 337.15 3,004.6 2,948.4 2,997.2 -1,083.6 6,034,129.54 468,872.30 0.00 3,180.74 4,800.0 61.74 337.15 3,091.0 2,995.7 3,078.3 -1,117.8 6,034,210.84 468,838.43 0.00 3,268.81 4,900.0 61.74 337.15 3,099.3 3,043.1 3,159.9 -1,152.0 6,034,292.13 468,804.55 0.00 3,356.89 5,000.0 61.74 337.15 3,146.6 3,090.4 3,240.7 -1,186.2 6,034,373.42 468,770.68 0.00 3,444.96 5,100.0 61.74 337.15 3,194.0 3,137.8 3,321.8 -1,220.4 6,034,454.72 468,736.80 0.00 3,533.04 5,200.0 61.74 337.15 3,241.3 3,185.1 3,403.0 -1,254.6 6,034,536.01 468,702.93 0.00 3,621.11 5,222.9 61.74 337.15 3,252.2 3,196.0 3,421.6 -1,262.5 6,034,554.65 468,695.16 0.00 3,641.30 Hue 2 shale 5,241.5 61.74 337.15 3,261.0 3,204.8 3,436.7 -1,268.8 6,034,569.76 468,688.86 0.00 3,657.67 11 3/4" 5,300.0 61.74 337.15 3,288.7 3,232.5 3,484.2 -1,288.8 6,034,617.31 468,669.05 0.00 3,709.18 5,400.0 61.74 197.15 3,336.0 3,279.8 3,565.3 -1,323.0 6,034,698.60 468,635.18 0.00 3,797.26 5,500.0 61.74 337.15 3,383.4 3,327.2 3,646.5 -1,357.2 6,034,779.90 468,601.30 0.00 3,885.33 5,600.0 61.74 337.15 3,430.7 3,374.5 3,727.7 -1,391.4 6,034,861.19 468,567.43 0.00 3,973.40 5,700.0 61.74 337.15 3,478.1 3,421.9 3,808.8 -1,425.6 6,034,942.48 468,533.55 0.00 4,061.48 5,800.0 61.74 337.13 3,525.5 3,469.3 3,890.0 -1,459.9 6,035,023.78 468,499.67 0.00 4,149.55 5,900.0 61.74 337.15 3,572.8 3,516.6 3,971.1 -1,494.1 6,035,105.07 468,465.80 0.00 4,237.62 6,000.0 61.74 337.15 3,620.2 3,564.0 4,052.3 -1,528.3 6,035,186.37 468,431.92 0.00 4,325.70 6,100.0 61.74 337.15 3,667.5 3,611.3 4,133.5 -1,562.5 6,035,267.66 468,398.05 0.00 4,413.77 6,200.0 61.74 337.15 3,714.9 3,658.7 4,214.6 -1,596.7 6,035,348.95 468,364.17 0.00 4,501.84 6,300.0 61.74 337.15 3,762.2 3,706.0 4,295.8 -1,630.9 6,035,430.25 468,330.30 0.00 4,589.92 6,400.0 61.74 337.15 3,809.6 3,753.4 4,377.0 -1,665.1 6,035,511.54 468,296.42 0.00 4,677.99 6,500.0 61.74 337.15 3,856.9 3,800.7 4,458.1 -1,699.3 6,035,592.84 468,262.55 0.00 4,766.06 6,600.0 61.74 337.15 3,904.3 3,848.1 4,539.3 -1,733.5 6,035,674.13 468,228.67 0.00 4,854.14 6,700.0 61.74 337.15 3,951.6 3,895.4 4,620.5 -1,767.7 6,035,755.43 468,194.79 0.00 4,942.21 6,800.0 61.74 337.15 3,999.0 3,942.8 4,701.6 -1,801.9 6,035,836.72 468,160.92 0.00 5,030.29 6,900.0 61.74 337.15 4,046.3 3,990.1 4,782.8 -1,836.1 6,035,918.01 468,127.04 0.00 5,118.36 7,000.0 61.74 337.15 4,093.7 4,037.5 4,864.0 -1,870.3 6,035,999.31 468,093.17 0.00 5,206.43 7,100.0 61.74 337.15 4,141.0 4,084.8 4,945.1 -1,904.5 6,036,080.60 468,059.29 0.00 5,294.51 7,200.0 61.74 337.15 4,188.4 4,132.2 5,026.3 -1,938.8 6,036,161.90 468,025.42 0.00 5,382.58 3/9/2012 9:06:51AM Page 5 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM_Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +EI-W Northing Easting DLS Vert Section (ft) (?) (bearing) (ft) ft (ft) (ft) (ft) (ft) 4,179.52 7,300.0 61.74 337.15 4,235.7 4,179.5 5,107.5 -1,973.0 6,036,243.19 467,991.54 0.00 5,470.65 7,400.0 61.74 337.15 4,283.1 4,226.9 5,188.6 -2,007.2 6,036,324.48 467,957.67 0.00 5,558.73 7,500.0 61.74 337.15 4,330.4 4,274.2 5,269.8 -2,041.4 6,036,405.78 467,923.79 0.08 5,646.80 7,546.0 61.74 337.15 4,352.2 4,296.0 5,307.1 -2,057.1 6,036,443.17 467,908.21 0.00 5,687.31 Brookian 2B 7,600.0 61.74 337.15 4,377.8 4,321.6 5,350.9 -2,075.6 6,036,487.07 467,889.91 0.00 5,734.87 7,700.0 61.74 337.15 4,425.1 4,368.9 5,432.1 -2,109.8 6,036,568.37 467,856.04 0.00 5,822.95 7,800.0 61.74 337.15 4,472.5 4,416.3 5,513.3 -2,144.0 6,036,649.66 467,822.16 0.00 5,911.02 7,900.0 61.74 337.15 4,519.8 4,463.6 5,594.4 -2,178.2 6,036,730.96 467,788.29 0.00 5,999.09 8,000.0 61.74 337.15 4,567.2 4,511.0 5,675.6 -2,212.4 6,036,812.25 467,754.41 0.00 6,087.17 8,100.0 61.74 337.15 4,614.5 4,558.3 5,756.8 -2,246.6 6,036,693.54 467,720.54 0.00 6,175.24 8,200.0 61.74 337.15 4,661.9 4,605.7 5,837.9 -2,280.8 6,036,974.84 467,686.66 0.00 6,263.31 8,300.0 61.74 337.15 4,709.2 4,653.0 5,919.1 -2,315.0 6,037,056.13 467,652.79 0.00 6,351.39 8,400.0 61.74 337.15 4,756.6 4,700.4 6,000.3 -2,349.2 6,037,137.43 467,618.91 0.00 6,439.46 8,500.0 61.74 337.15 4,803.9 4,747.7 6,881.4 -2,383.5 6,037,218.72 467,585.04 0.00 6,527.54 8,600.0 61.74 337.15 4,851.3 4,795.1 6,162.6 -2,417.7 6,037,300.01 467,551.16 0.00 6,615.61 8,634.5 61.74 337.15 4,867..6 4,811.4 6,190.6 -2,429.5 6,037,328.06 467,539.47 0.00 6,645.99 Start Dir 1°/100':8634.5'MD,486Z.6'TVD 8,700.0 61.56 337.86 4,898.7 4,842.5 6,243.9 -2,451.5 6,037,381.40 467,517.64 1.00 6,703.63 8,800.0 61.29 338.98 4,946.6 4,890.4 6,325.5 -2,483.8 6,037,463.17 467,485.66 1.00 6,791.39 8,900.0 61.03 340.06 4,994.8 4, 38.6 6,407.6 -2,514.5 6,037,545.34 467,455.33 1.00 6,878.87 9,000.0 60.77 341.17 5,043.4 4,987.2 6,490.0 -2,543.5 6,037,627.87 467,426.66 1.00 6,966.02 9,038.4 60.68 341.59 5,062.2 5,006.0 6,521.7 -2,554.2 6,037,659.62 467,416.11 1.00 6,999.36 Top Torok Sand 9,042.4 60.67 341.64 5,064.2 5,008.0 6,525.1 -2,555.3 6,037,663.00 467,415.00 1.00 7,002.91 K20 31 ext VI fault t1 9,045.1 60.67 641.67 5,065.5 5,009.3 6,527.3 -2,556.0 6,037,665.20 467,414.28 1.00 7,005.21 End Dir:9045.1'MD,5065.5'TVD 9,100.0 60.67 341.67 5,092.4 5,036.2 6,572.7 -2,571.1 6,037,710.69 467,399.41 0.00 7,052.88 9,200.0 60.67 341.67 5,141.4 5,085.2 6,655.5 -2,598.5 6,037,793.55 467,372.33 0.00 7,139.71 9,300.0 60.67 341.67 5,190.4 5,134.2 6,738.2 -2,625.9 6,037,876.41 467,345.25 0.00 7,226.54 9,400.0 60.67 341.67 5,239.3 5,183.1 6,821.0 -2,653.3 6,037,959.27 467,318.17 0.00 7,313.37 9,500.0 60.67 341.67 5,288.3 5,232.1 6,903.7 -2,680.7 6,038,042.13 467,291.10 0.00 7,400.20 9,520.1 60.67 341.67 5,298.2 5,242.0 6,920.4 -2,686.3 6,038,058.82 467,285.64 0.00 7,417.69 Base Torok Sand 9,600.0 60.67 341.67 5,337.3 5,281.1 6,986.5 -2,708.2 6,038,124.99 467,264.02 0.00 7,487.03 9,700.0 60.67 341.67 5,386.3 5,330.1 7,069.2 -2,735.6 6,038,207.85 467,236.94 0.00 7,573.86 9,800.0 60.67 341.67 5,435.3 5,379.1 7,152.0 -2,763.0 6,038,290.71 467,209.86 0.00 7,660.69 9,900.0 60.67 341.67 5,484.3 5,428.1 7,234.8 -2,790.4 6,038,373.57 467,182.78 0.00 7,747.52 9,932.5 60.67 341.67 5,500.2 5,444.0 7,261.7 -2,799.3 6,038,400.52 467,173.97 0.00 7,775.76 Torok 1 Shale 9,944.4 60.67 341.67 5,506.0 5,449.8 7,271.5 -2,802.6 6,038,410.33 467,170.76 0.00 7,786.04 9 5/8" 10,000.0 60.67 341.67 5,533.3 5,477.1 7,317.5 -2,817.8 6,038,456.43 467,155.70 0.00 7,834.35 10,100.0 60.67 341.67 5,582.2 5,526.0 7,400.3 -2,845.3 6,038,539.29 467,128.62 0.00 7,921.18 3/9/2012 9:06:51AM Page 6 COMPASS 2003.16 Build 42 • Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +NIS +EI-W Northing Easting DLS Vert Section (ft) (?) (bearing) (ft) ft (ft) (ft) (ft) (ft) 5,575.02 10,200.0 60.67 341.67 5,631.2 5,575.0 7,483.0 -2,872.7 6,038,622.15 467,101.54 0.00 8,008.01 10,300.0 60.67 341.67 5,680.2 5,624.0 7,565.8 -2,900.1 6,038,705.01 467,074.46 0.00 8,094.84 10,400.0 60.67 341.67 5,729.2 5,673.0 7,648.5 -2,927.5 6,038,787.87 467,047.38 0.0G 8,181.67 10,500.0 60.67 341.67 5,778.2 5,722.0 7,731.3 -2,954.9 6,038,870.73 467,020.30 0.00 8,268.50 10,600.0 60.67 341.67 5,827.2 5,771.0 7,814.1 -2,982.3 6,038,953.59 466,993.22 0.00 8,355.33 10,610.3 60.67 341.67 5,832.2 5,776.0 7,822.6 -2,985.2 6,038,962.11 466,990.44 0.00 8,364.26 Top HRZ 10,671.6 60.67 341.67 5,862.2 5,806.0 7,873.3 -3,002.0 6,039,012.91 466,973.83 0.00 8,417.50 Start Dir 3°/100':10671.6'MD,5862.2'TVD 10,700.0 61.50 341.44 5,876.0 5,819.8 7,896.9 -3,009.8 6,039,036.52 466,966.06 3.01 8,442.26 10,800.0 64.41 340.64 5,921.4 5,865.2 7,981.1 -3,038.8 6,039,120.85 466,937.46 3.00 8,531.04 10,900.0 67.33 339.88 5,962.3 5,906.1 8,067.0 -3,069.6 6,039,206.85 466,906.98 3.00 8,622.10 10,918.1 67.86 339.74 5,969.2 5,913.0 8,082.7 -3,075.4 6,039,222.57 466,901.27 3.00 8,638.80 Base HRZ 10,996.2 70.14 339.17 5,997.2 5,941.0 8,151.0 -3,101.0 6,039,290.97 466,875.94 3.00 8,711.65 Kalubik Marker 11,000.0 70.25 339.15 5,998.5 5,942.3 8,154.3 -3,102.2 6,039,294.29 466,874.70 3.00 8,715.19 11,100.0 73.18 338.44 6,029.8 5,973.6 8,242.8 -3,136.6 6,039,382.93 466,840.71 3.00 8,810.06 11,200.0 76.10 337.76 6,056.3 6,000.1 8,332.3 -3,172.6 6,039,472.52 466,805.12 3.00 8,906.44 11,243.0 77.36 337.4 6,066.2 6,010.0 8,371.0 -3,188.5 6,039,511.30 466,789.33 3.00 8,948.30 Top Kuparuk C 11,296.6 78.93 337.12 6,077.2 8,021.0 8,419.4 -3,208.7 6,039,559.74 466,769.30 3.00 9,000.71 Base Kuparuk(LCU) 11,300.0 79.03 337.10 6,077.8 6,021.7 8,422.5 -3,210.0 6,039,562.83 466,768.01 3.00 9,004.07 11,400.0 81.96 336.45 6,094.4 6,038.2 8,513.1 -3,248.9 6,039,653.60 466,729.48 3.00 9,102.69 11,469.4 84.00 336.00 6,102.8 6,046.6 8,576.1 -3,276.7 6,039,716.74 466,701.97 3.00 9,171.56 End Dir:11469.4'MD,6102.8'TVD 11,500.0 84.00 336.00 6,106.0 6,049.8 8,603.9 -3,289.1 6,039,744.59 466,689.71 0.00 9,201.99 1 11,600.0 84.00 336.00 6,116.5 6,060.3 8,694.8 -3,329.5 6,039,835.59 466,649.63 0.00 9,301.44 11,635.5 84.00 336.00 6,120.2 6,064.0 8,727.0 -3,343.9 6,039,867.91 466,635.40 0.00 9,336.75 BCU 11,700.0 84.00 336.00 6,126.9 6,070.7 8,785.6 -3,370.0 6,039,926.60 466,609.55 0.00 9,400.89 11,769.4 84.00 336.00 6,134.2 6,078.0 8,848.7 -3,398.1 6,039,989.76 466,581.73 0.00 9,469.90 Start DIr 3.25°1100':11769.4'MD,6134.2'TVD 11,769.5 84.00 336.0P 6,134.2 6,078.0 8,848.8 -3,398.1 6,039,989.86 466,581.69 0.00 9,470.02 K20 31axt V1T1 11,778.8 83.70 336.02 6,135.2 6,079.0 8,857.2 -3,401.8 6,039,998.29 466,577.98 3.27 9,479.23 Top Nuiqsut 11,792.0 83.27 336.05 6,136.7 6,080.5 8,869.2 -3,407.2 6,040,010.32 466,572.69 3.24 9,492.36 End Dir:11792'MD,6136.7'TVD 11,800.0 83.27 336.05 6,137.6 6,081.4 8,876.5 -3,410.4 6,040,017.59 466,569.50 0.00 9,500.31 11,820.0 83.27 336.05 6,140.0 6,083.8 8,894.6 -3,418.5 6,040,035.77 466,561.51 0.00 9,520.17 7.. 11,900.0 83.27 336.05 6,149.4 6,093.2 8,967.2 -3,450.7 6,040,108.51 466,529.56 0.00 9,599.62 12,000.0 83.27 336.05 6,161.1 6,104.9 9,058.0 -3,491.0 6,040,199.42 466,489.62 0.00 9,698.92 1 12,100.0 83.27 336.05 6,172.8 6,116.6 9,148.7 -3,531.3 6,040,290.34 466,449.68 0.00 9,798.23 3/9/2012 9:06:51AM Page 7 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (bearing) (ft) ft (ft) (ft) (ft) (ft) 6,125.83 12,178.8 83.27 336.05 6,182.0 6,125.8 9,220.3 -3,563.1 6,040,361.98 466,418.20 0.00 9,876.49 Start Dir 3.25°1100':12178.8'MD,6182'TVD 12,200.0 83.86 335.69 6,184.4 6,128.2 9,239.5 -3,571.7 6,040,381.23 466,409.67 3.26 9,897.55 12,300.0 86.65 334.01 6,192.7 6,136.5 9,329.7 -3,614.1 6,040,471.59 466,367.69 3.25 9,997.15 12,400.0 89.43 332.34 6,196.1 6,139.9 9,418.9 -3,659.2 6,040,560.94 466,322.96 3.25 10,096.91 12,410.3 89.72 332.17 6,196.2 6,140.0 9,428.0 -3,694.0 6,040,570.10 466,318.19 3.25 10,107.21 K20 31 ext V1T2 12,420.3 90.00 332.00 6,196.2 6,140.0 9,436.8 -3,668.6 6,040,578.93 466,313.56 3.25 10,117.15 Start Dir 3°/100':12420.3'MD,6196.2'TVD 12,500.0 91.29 329.99 6,195.3 6,139.1 9,506.5 -3,707.3 6,040,648.77 466,275.21 3.00 10,196.47 12,600.0 92.91 327.46 6,191.6 6,135.4 9,591.9 -3,759.1 6,040,734.37 466,223.69 3.00 10,295.47 12,642.0 93.59 326.40 6,189.2 6,133.0 9,627.0 -3,782.0 6,040,769.60 466,200.95 3.00 10,336.81 End Dir:12642'MD,6189.2'TVD 12,700.0 93.59 326.40 6,185.6 6,129.4 9,675.3 -3,814.1 6,040,817.94 466,169.12 0.00 10,393.80 12,800.0 93.59 326.40 6,179.3 6,123.1 9,758.4 -3,869.3 6,040,901.28 466,114.23 0.00 10,492.04 12,900.0 93.59 326.40 6,173.1 6,116.9 9,841.5 -3,924.5 6,040,984.62 466,059.34 0.00 10,590.29 13,000.0 93.59 326.40 6,166.8 6,110.6 9,924.6 -3,979.8 6,041,067.97 466,004.45 0.00 10,688.54 13,100.0 93.59 326.40 6,160.6 6,104.4 10,007.E -4,035.0 6,041,151.31 465,949.56 0.00 10,786.79 13,200.0 93.59 326.40 6,154.3 6,098.1 10,090.9 -4,090.2 6,041,234.65 465,894.67 0.00 10,885.04 13,300.0 93.59 326.4P 6,148.0 6,091.8 10,174.0 -4,145.4 6,041,317.99 465,839.78 0.00 10,983.29 13,400.0 93.59 326.40 6,141.8 6,(85.6 10,257.2 -4,200.7 6,041,401.33 465,784.89 0.00 11,081.54 13,500.0 93.59 326.40 6,135.5 E,079.3 10,340.3 -4,255.9 6,041,484.68 465,730.00 0.00 11,179.79 13,540.6 93.59 326.40 6,132.9 6,076.7 10,374.0 -4,278.3 6,041,518.51 465,707.72 0.00 11,219.68 Start Dir 3°/100':13540.8'MD,6132.9'7VD 13,600.0 92.60 327.88 6,129.7 6,073.5 10,423.8 -4,310.5 6,041,568.46 465,675.74 3.00 11,278.20 13,700.0 90.93 330.37 6,126.7 6,070.5 10,509.6 -4,361.8 6,041,654.44 465,624.81 3.00 11,377.30 13,755.9 90.00 331.76 6,126.2 6,070.0 10,558.3 -4,388.7 6,041,703.21 465,598.11 3.00 11,432.66 13,890.0 88.67 331.81 6,126.7 6,070.5 10,597.4 -4,409.7 6,041,742.40 465,577.28 3.00 11,476.89 13,810.6 88.35 331.82 6,127.6 6,070.8 10,606.7 -4,414.7 6,041,751.76 465,572.32 3.00 11,487.45 End Dlr:13810.6'MD,6127'TVD 13,900.0 88.35 331.82 6,129.6 6,073.4 10,685.5 -4,456.9 6,041,830.69 465,530.44 0.00 11,576.52 14,000.0 88.35 331.82 6,132.4 6,076.2 10,773.6 -4,504.1 6,041,918.99 465,483.60 0.00 11,676.14 14,100.0 88.35 331.82 6,135.3 6,079.1 10,861.7 -4,551.3 6,042,007.28 465,436.76 0.00 11,775.76 14,200.0 88.35 331.82 6,138.2 6,082.0 10,949.9 -4,598.5 6,042,095.57 465,389.92 0.00 11,875.38 14,300.0 88.35 331.82 6,141.1 6,084.9 11,038.0 -4,645.7 6,042,183.86 465,343.07 0.00 11,975.00 14,400.0 88.35 331.82 6,143.9 6,087.7 11,126.1 -4,692.9 6,042,272.16 465,296.23 0.00 12,074.63 14,444.6 88.35 331.82 6,145.2 6,089.0 11,165.4 -4,714.0 6,042,311.53 465,275.34 0.00 12,119.06 Start Dir 3°/100':14444.6'MD,6145.2'TVD ' 14,500.0 89.70 330.85 6,146.2 6,090.0 11,214.0 -4,740.5 6,042,360.24 465,248.97 3.00 12,174.22 14,512.3 90.00 330.64 6,146.2 6,090.0 11,224.7 -4,746.5 6,042,371.00 465,243.00 3.00 12,186.47 K20 31 ext V1 T4 I 14,600.0 92.63 330.64 6,144.2 6,088.0 11,301.1 -4,789.5 6,042,447.57 465,200.33 3.00 12,273.67 14,689.2 95.31 330.65 6,138.0 6,081.8 11,378.7 -4,833.1 6,042,525.29 465,157.03 3.00 12,362.18 End Dir:14689.2'MD,6138'TVD 14,700.0 95.31 330.65 6,137.0 6,080.8 11,388.0 -4,838.4 6,042,534.68 465,151.80 0.00 12,372.87 3/3!2012 9:06:51AM Page 8 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTION Standard Proposal Report Database: EDM_Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (bearing) (ft) ft (ft) (ft) (ft) (ft) 6,071.57 14,800.0 95.31 330.65 6,127.8 6,071.6 11,474.8 -4,887.2 6,042,621.66 465,103.35 0.00 12,471.92 14,900.0 95.31 330.65 6,118.5 6,062.3 11,561.6 -4,936.0 6,042,708.63 465,054.90 0.00 12,570.97 14,948.0 95.31 330.65 6,114.1 6,057.9 11,603.3 -4,959.5 8,042,750.38 465,031.64 0.0G 12,618.51 Start Dir 3°/100':14948'MD,6114.1'TVD 15,000.0 93.92 329.94 6,109.9 6,053.7 11,648.3 -4,985.1 6,042,795.50 465,006.14 3.00 12,670.04 15,071.6 92.00 328.96 6,106.2 6,050.0 11,709.9 -5,021.5 6,042,857.24 464,970.03 3.00 12,741.03 15,105.8 93.02 329.00 6,104.7 6,048.5 11,739.2 -5,039.1 6,042,886.56 464,952.56 3.00 12,774.86 End Dir:15105.8'MD,6104.7'TVD 15,200.0 93.02 329.00 6,099.7 6,043.5 11,819.8 -5,087.5 6,042,967.38 464,904.45 0.00 12,868.12 15,226.8 93.02 329.00 6,098.3 6,042.1 11,842.7 -5,101.3 6,042,990.38 464,890.76 0.00 12,894.65 Start Dir 3°/100':15226.8'MD,6098.3'TVD 15,261.4 94.00 328.65 6,096.2 6,040.0 11,872.3 -5,119.2 6,043,020.00 464,873.00 3.00 12,928.88 K20 31ext V1T6 15,282.9 94.64 328.65 6,094.6 6,038.4 11,890.6 -5,130.4 6,043,038.35 464,861.92 3.00 12,950.11 End Dir:15282.9'MD,6094.6'TVD 15,300.0 94.64 328.65 6,093.2 6,037.0 11,905.1 -5,139.2 6,043,052.93 464,853.12 0.00 12,967.00 15,400.0 94.64 328.65 6,085.1 6,028.9 11,996.3 -5,191.1 6,043,138.25 464,801.60 0.00 13,065.73 15,509.8 94.64 328.65 6,076.2 6,020.0 12,083.7 -5,248.0 6,043,231.93 464,745.04 0.00 13,174.13 Total Depth:15509.9'MD,6076.2'TVD 15,509.9 94.64 328.65 6,076.2 6,020.0 12,083.8 -5,248.1 6,043,232.00 464,745.00 0.00 13,174.22 K20 31 ext V1 T7 3/9/2012 9:06:51AM Page 9 COMPASS 2003.16 Build 42 Pioneer Natural Resources HALLIBURTON Standard Proposal Report Database: EDM Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Targets Target Name -hit/miss target Dip Angle Dip Dir. TVD +N/-S +E/-W Northing Easting -Shape (?) (bearing (ft) (ft) (ft) (ft) (ft) K20 31ext V1T1 0.00 0.00 6,134.2 8,848.9 -3,397.8 6,039,990.00 466,582.00 -plan hits target -Point K20 31ext V1T7 0.00 0.00 6,076.2 12,083.8 -5,248.1 6,043,232.00 464,745.00 -plan hits target -Point K2031extV1T4 0.00 0.00 6,146.2 11,224.7 -4,746.5 6,042,371.00 465,243.00 -plan hits target -Point K20 31ext V1T3 0.00 0.00 6,126.2 10,558.1 -4,388.8 6,041,703.00 465,598.00 -plan hits target -Point K2031extV1T6 0.00 0.00 6,096.2 11,872.3 -5,119.2 6,043,020.00 464,873.00 -plan hits target -Point K2031extV1T5 0.00 0.00 6,106.2 11,709.7 -5,021.5 6,042,857.00 464,970.00 -plan hits target -Point K20 31ext V1 fault t1 9.00 0.00 5,064.2 6,525.1 -2,555.3 6,037,663.00 467,415.00 -plan hits target -Point K20 31ext V1T2 0.00 0.00 8,196.2 9,427.9 -3,664.2 6,040,570.00 466,318.00 -plan hits target -Point Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name C') (") 5,241.5 3,261.0 11 3/4" 11-3/4 14-1/2 9,944.4 5,506.0 H 5/8" 9-5/8 11-3/4 11,820.0 6,140.0 7" 7 8-1/2 15,509.9 6,076.2 4 1/2" 4-1/2 6-1/8 3/9/2012 9:06:51AM Page 10 COMPASS 2003.16 Build 42 Pioneer Natural Resources HAL LIBURTOIV Standard Proposal Report Database: EDM_Alaska Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 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-25 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-25 KE1 Design: ODSN-25 KE1 wp08 Formations Measured Vertical Vertical Dip Depth Depth Depth SS Dip Direction (ft) (ft) ft Name lithology (?) (bearing) 1,752.6 1,566.2 Base of Permafrost 11,635.5 6,120.2 BCU 0.00 3,197.6 2,293.2 Top West Sak 11,778.8 6,135.2 Top Nuiqsut 0.00 858.6 841.2 Top of Permafrost 4,496.4 2,908.2 Cret tuffs 11,296.6 6,077.2 Base Kuparuk(LCU) 0.00 11,243.0 6,066.2 Top Kuparuk C 0.00 7,546.0 4,352.2 Brookian 2B 0.00 10,918.1 5,969.2 Base HRZ 0.00 9,520.1 5,298.2 Base Torok Sand 0.00 9,932.5 5,500.2 Torok 1 Shale 0.00 10,610.3 5,832.2 Top IHRZ 0.00 9,038.4 5,062.2 Tap Torok Sand 0.00 5,222.9 3,252.2 Hue 2 shale 0.00 10,996.2 5,997.2 Kalubik Marker 0.00 Plan Annotations Measured Vertical Local Coordinates Depth Depth +N/-S +E/-W (ft) (ft) (ft) (ft) Comment 200.0 200.0 0.0 0.0 Start Dir 3.5°/100':200'MD,200'TVD:5°RT TF 771.4 759.9 98.3 8.6 Start Dir 3.15°/100':771.4'MD,759.9'TVD 2,189.2 1,815.7 959.3 -224.7 End Dir:2189.2'MD, 1815.7'TVD 8,634.5 4,867.6 6,190.6 -2,429.5 Start Dir 1°/100':8634.5'MD,4867.6'TVD 9,045.1 5,065.5 6,527.3 -2,556.0 End Dir:9045.1'MD,5065.5'TVD 10,671.6 5,862.2 7,873.3 -3,002.0 Start Dir 3°/100':10671.6'MD,5862.2'TVD 11,469.4 6,102.8 8,576.1 -3,276.7 End Dir: 11469.4'MD,6102.8'TVD 11,769.4 6,134.2 8,848.7 -3,398.1 Start Dir 3.25°/100':11769.4'MD,6134.2'TVD 11,792.0 6,136.7 8,869.2 -3,407.2 End Dir: 11792'MD,6136.7'TVD 12,178.8 6,182.0 9,220.3 -3,563.1 Start Dir 3.25°/100':12178.8'MD,6182'TVD 12,420.3 6,196.2 9,436.8 -3,668.6 Start Dir 3°/100':12420.3'MD,6196.2'TVD 12,642.0 6,189.2 9,627.0 -3,782.0 End Dir:12642'MD,6189.2'TVD 13,540.6 6,132.9 10,374.0 -4,278.3 Start Dir 3°/100':13540.6'MD,6132.9'TVD 13,810.6 6,127.0 10,606.7 -4,414.7 End Dir:13810.6'MD,6127'TVD 14,444.6 6,145.2 11,165.4 -4,714.0 Start Dir 3°/100': 14444.6'MD,6145.2'TVD 14,689.2 6,138.0 11,378.7 -4,833.1 End Dir:14689.2'MD,6138'TVD 14,948.0 6,114.1 11,603.3 -4,959.5 Start Dir 3°/100': 14948'MD,6114.1'TVD 15,105.8 6,104.7 11,739.2 -5,039.1 End Dir:15105.8'MD,6104.7'TVD 15,226.8 6,098.3 11,842.7 -5,101.3 Start Dir 3°/100': 15226.8'MD,6098.3'TVD 15,282.9 6,094.6 11,890.6 -5,130.4 End Dir:15282.9'MD,6094.6'TVD 15,509.8 6,076.2 12,083.7 -5,248.0 Total Depth: 15509.9'MD,6076.2'TVD 3/9/2012 9:06:51AM Page 11 COMPASS 2003.16 Build 42 Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN-25 ODSN-25 KE1 ODSN-25 KE1 wp08 Anticollision Summary Report 09 March, 2012 s 0 0 24°10 1111"14*4% i loolissisia, -s f2 co N w 2, ,,,,1�,,,, ,F W Y , ygg'gg",,,,g,`op n a, ,,,g , ,g, O *Lk U '�m88RRS`m $l`SF:f3«$RRA,^. 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Y M Vl ev kl Ca 8 N 8 Z . 8 0 8 0 0 c 0 0 O 0 c O 0 O Pioneer Natural Resources Anticollision Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 Project: Oooguruk Development ND Reference: 42.7'+13.5'@ 56.2ft(Nabors 19AC) Reference Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.2ft(Nabors 19AC) Site Error: 0.0ft North Reference: True Reference Well: ODSN-25 Survey Calculation Method: Minimum Curvature Well Error: 0.0ft Output errors are at 2.00 sigma Reference Wellbore ODSN-25 KE1 Database: EDM Alaska Reference Design: ODSN-25 KE1 wp08 Offset ND Reference: Offset Datum Reference ODSN-25 KE1 wp08 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer( Interpolation Method: MD Interval 25.0ft Error Model: ISCWSA Depth Range: Unlimited Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,746.7ft Error Surface: Elliptical Conic Survey Tool Program Date 3/9/2012 From To (ft) (ft) Survey(Wellbore) Tool same Description 42.7 600.0 ODSN-25 KE1 wp08(ODSN-25 KE1) SR-Gyro-SS Fixed:v2:surface readout gyro single shot 600.0 5,200.0 ODSN-25 KE1 wp08(ODSN-25 KE1) MWD+IFR12+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 5,200.0 9,950.0 ODSN-25 KE1 wp08(ODSN-25 KE1) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 9,950.0 11,800.0 ODSN-25 KE1 wp08(ODSN-25 KE1) MWD+IFR2+MS+sag Fixed:v2:1IFR dec&3-axis correction+sag 11,800.0 15,509.9 ODSN-25 KE1 wp08(ODSN-25 IIFEaj MWD+IFR2+MS+sag Fixed:v2:lIFR dec&3-axis correction+sag 3/9/2012 9:21:40AM Page 2 of 5 COMPASS 2003.16 Build 42 Pioneer Natural Resources Anticollision Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.2ft(Nabors 19AC) Reference Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.2ft(Nabors 19AC) Site Error: 0.0ft North Reference: True Reference Well: ODSN-25 Survey Calculation Method: Minimum Curvature Well Error: 0.0ft Output errors are at 2.00 sigma Reference Wellbore ODSN-25 KE1 Database: EDM_Alaska Reference Design: ODSN-25 KE1 wp08 Offset TVD Reference: Offset Datum Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) Oooguruk Drill Site ODSDW1-44-ODSDW1-44 Disposal-ODSDW1 223.2 225.0 166.5 3.90 162.6 Pass-Major Risk ODSDW2-19-ODSDW2-19 Disposal-ODSDW2 247.1 250.0 162.8 4.63 158.1 Pass-Major Risk ODSK-13-ODSK-13-ODSK-13 248.2 250.0 111.7 4.63 107.1 Pass-Major Risk ODSK-13-ODSK-13PB1 -ODSK-13PB1 248.2 250.0 111.7 4.63 107.1 Pass-Major Risk ODSK-13-ODSK-13PB2-ODSK-13PB2 248.2 250.0 111.7 4.63 107.1 Pass-Major Risk ODSK-14-ODSK-14-ODSK-14 KupB 224.0 225.0 119.0 4.22 114.8 Pass-Major Risk ODSK-14-ODSK-14 PB1 -ODSK-14 PB1 KupB 224.0 225.0 119.0 4.22 114.8 Pass-Major Risk ODSK-14-ODSK-14 PB2-ODSK-14 PB2 KupB 224.0 225.0 119.0 4.22 114.8 Pass-Major Risk ODSK-33-ODSK-33 KupA-ODSK-33 KupA 42.7 42.7 67.0 1.09 65.9 Pass-Major Risk ODSK-33-ODSK-33 PB1 KupA-ODSK-33 PB1 1 247.9 250.0 68.3 4.50 63.8 Pass-Major Risk ODSK-35Ai-ODSK-35 KupB-ODSK-35 KupB Si 248.1 250.0 81.8 4.45 77.4 Pass-Major Risk ODSK-35Ai-ODSK-35Ai-ODSK-35Ai KupH Sum 248.1 250.0 81.8 4.45 77.4 Pass-Major Risk ODSK-38i-ODSK-38i KupD-ODSK-38i KupD Si 222.5 225.0 113.9 4.04 109.9 Pass-Major Risk ODSK-41 -ODSK-41 KupF-ODSK-41 KupF Sur% 222.3 225.0 136.1 4.12 132.0 Pass-Major Risk ODSK-41 -ODSK-41 PB1 KupF-ODSK-41 PB1 I. 222.'1 225.0 136.1 4.20 131.9 Pass-Major Risk ODSK-42i-ODSK-42Ai-ODSK-42Ai 223.4 225.0 142.0 4.14 137.9 Pass-Major Risk ODSK-42i-ODSK-42i KupG-ODSK-42i KupG 223.4 225.0 142.0 4.18 137.9 Pass-Major Risk ODSK-7i-ODSN-7i Ivik Kup-ODSN-7i Ivik Ifiip w 274.0 275.0 62.8 4.94 57.9 Pass-Major Risk ODSN-1 -ODSN-1 KE3-ODSN-1 KE3 426.7 425.0 29.9 7.76 22.2 Pass-Major Risk ODSN-1 -ODSN-1 KE3-ODSN-1 KE3 wp18 426.7 425.0 29.9 7.76 22.2 Pass-Major Risk ODSN-1 -ODSN-1 KE3 PB1 -ODEN-1 KE3 PB1 426.7 425.0 29.9 7.76 22.2 Pass-Major Risk ODSN-1 -ODSN-1 KE3 PB1 Original-ODSN-1 K 426.7 425.0 29.9 7.76 22.2 Pass-Major Risk ODSN-10-ODSN-10 PS12-ODSN-10 PS12 wp1 273.3 275.0 81.6 5.19 76.5 Pass-Major Risk ODSN-11 i-ODSN-11 i IS11-ODSN-11i IS11 wp1 224.4 21'5.0 87.7 4.14 83.6 Pass-Major Risk ODSN-12-ODSN-12 RS10-ODSN-12 PS10 wp1 248.6 250.0 94.2 4.62 89.6 Pass-Major Risk ODSN-15i-ODSN-15i-O13SN-15i IN12 200.0 200.0 125.7 3.83 121.9 Pass-Major Risk ODSN-16-ODSN-16-ODSN-16 PN13 Surveys 223.9 225.0 131.7 4.12 127.6 Pass-Major Risk ODSN-16-OD5N-16L1-ODSN-16L1 PN13 223.9 225.0 131.7 4.12 127.6 Pass-Major Risk ODSN-17-ODSN-17-ODSN-17 PN13 Mid Surve 271.4 275.0 137.5 5.14 132.3 Pass-Major Risk ODSN-17-ODSN-17 L1-ODSN-17 L1 PN13 271.4 275.0 137.5 5.14 132.3 Pass-Major Risk ODSN-18-ODSN-18-ODSN-18 PN11 247.5 250.0 145.2 4.58 140.6 Pass-Major Risk ODSN-18-ODSN-18 PBS-ODSN-18 PN11 PB5 247.5 250.0 145.2 4.58 140.6 Pass-Major Risk O@SN-18-ODSN-18 PB1 -ODSN-18 PN11 PB1 247.5 250.0 145.2 4.58 140.6 Pass-Major Risk ODSN-18-ODSN-18 PB2-ODSN-18 PN11 PB2 247.5 250.0 145.2 4.58 140.6 Pass-Major Risk ODSN-18-ODSN-18 PB2-ODSN-18_PB2 247.5 250.0 145.2 4.58 140.6 Pass-Major Risk ODSN-18-ODSN-18 PB3-ODSN-18 PN11 PB3 247.5 250.0 145.2 4.58 140.6 Pass-Major Risk ODSN-18-ODSN-18 PB4-ODSN-18 PN11 PB4 247.5 250.0 145.2 4.58 140.6 Pass-Major Risk O11SN-2-ODSN-2 PN3 ext-ODSN-2 PN3 ext wp 549.2 550.0 21.9 10.61 11.5 Pass-Major Risk ODSh-20-ODSK-20 KE4-ODSN-20 KE4 wp05 i 246.9 250.0 169.7 4.68 165.0 Pass-Major Risk ODSN-Z1-ODSN-21 PS13-ODSN-21 PS13 wp0 200.0 200.0 176.4 3.77 172.6 Pass-Major Risk ODSN-22i-ODSN-22i IS14-ODSN-22i IS14 wp0 246.6 250.0 183.4 4.68 178.7 Pass-Major Risk ODSN-23i-GIDSN-23i-ODSN-23i IN14 125.0 125.0 190.1 2.38 187.7 Pass-Major Risk ODSN-23i-ODSN-23i PB1-ODSN-23i IN14 PB1 125.0 125.0 190.1 2.38 187.7 Pass-Major Risk ODSN-23i-ODSN-23i PB2-ODSN-23i IN14 PB2 125.0 125.0 190.1 2.38 187.7 Pass-Major Risk ODSN-24-ODSN-24 KE5-ODSN-24 KE5 wp04 222.0 225.0 196.9 4.11 192.8 Pass-Major Risk ODSN-25-ODSN-25 KE1 L1 -ODSN-25 KE1 L1 11,800.0 11,800.0 0.0 0.65 -0.6 FAIL-NOERROR ODSN-26i-ODSN-26 KE2 PB2-ODSN-26 KE2 P 249.8 250.0 7.7 4.71 3.0 Pass-Major Risk ODSN-26i-ODSN-26i KE2-ODSN-26i KE2 249.8 250.0 7.7 4.71 3.0 Pass-Major Risk ODSN-26i-ODSN-26i KE2 PB1 -ODSN-26i KE2 249.8 250.0 7.7 4.71 3.0 Pass-Major Risk ODSN-27i-ODSN-27i IN4-ODSN-27i IN4 wp08 249.7 250.0 14.6 4.73 9.9 Pass-Major Risk ODSN-28-ODSN-28 PN3-ODSN-28 PN3 wp08 249.5 250.0 21.6 4.73 16.9 Pass-Major Risk ODSN-29i-ODSN-29 PN5-ODSN-29 PN5 wp01 249.3 250.0 28.6 4.46 24.1 Pass-Major Risk ODSN-30-ODSN-30 PS5-ODSN-30 PS5 wp01 249.2 250.0 35.6 4.46 31.1 Pass-Major Risk 3/9/2012 9:21:40AM Page 3 of 5 COMPASS 2003.16 Build 42 Pioneer Natural Resources Anticollision Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-25-Slot ODS-25 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.2ft(Nabors 19AC) Reference Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.2ft(Nabors 19AC) Site Error: 0.0ft North Reference: True Reference Well: ODSN-25 Survey Calculation Method: Minimum Curvature Well Error: 0.0ft Output errors are at 2.00 sigma Reference Wellbore ODSN-25 KE1 Database: EDM_Alaska Reference Design: ODSN-25 KE1 wp08 Offset TVD Reference: Offset Datum Summary Reference Offset Centre to No-GEo Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) Oooguruk Drill Site ODSN-31 -ODSN-31 -ODSN-31 PN6 Surveys 248.8 250.0 53.5 4.64 48.9 Pass-&lajor Risk ODSN-31 -ODSN-31 PB1 -ODSN-31 PB1 PN6 Si 248.8 250.0 53.5 4.73 48.8 Pass-Major Risk ODSN-32i-ODSN-32i IN7-ODSN-32i IN7 Surve, 224.3 225.0 60.5 4.07 56.4 Pass-Major Risk ODSN-32i-ODSN-32iPB1 IN7-ODSN-32iPB1 IN 224.3 225.0 60.5 4.07 56.4 Pass-Major Risk ODSN-34i-ODSN-34 IN9-ODSN-34i IN9 Survey 224.2 225.0 74.7 4.24 70.4 Pass-Major Risk ODSN-34i-ODSN-34i PB2-ODSN-34iPB2 IN9 224.2 225.0 74.7 4.24 70.4 Pass-Major Risk ODSN-34i-ODSN-34i PB3-ODSN-34iPB3 IN9 224.2 225.0 74.7 4.24 70.4 Pass-Major Risk ODSN-34i-ODSN-34iPB1 -ODSN-34iPB1 IN9 224.2 225.0 74.7 4.24 70.4 Pass-Major Risk ODSN-36-ODSN-36 L1 -ODSN-36 L1 wp01 248.0 250.0 88.0 4.54 83.5 Pass-Major Risk ODSN-36-ODSN-36 PB1 -ODSN-36 PB1 PN10 248.0 250.0 88.0 4.54 83.5 Pass-Major Risk ODSN-36-ODSN-36 PB2-ODSN-36 PB2 PN10 248.0 250.0 88.0 4.54 83.5 Pass-Major Risk ODSN-36-ODSN-36 PN10-ODSN-36 PN10 Sur 248.0 250.0 88.0 4.54 83.5 Pass-Major Risk ODSN-37-ODSN-37-ODSN-37 PNS 223.8 225.0 106.8 4.14 102.7 Pass-Major Risk ODSN-37-ODSN-37 L1 -ODSN-37 L1 wp01 223.8 225.0 106.8 4.14 102.7 Pass-Major Risk ODSN-3i-ODSN-3i IN4 ext-ODSN-3i IN4 wp01 474.E 475.0 33.8 9.15 24.6 Pass-Major Risk ODSN-4-ODSN-4 PN5 ext-ODSN-4 PN5 ext wp 325.2 325.0 39.4 5.89 33.5 Pass-Major Risk ODSN-40-ODSN-40 PN12-ODSN-40 PN1 H Sur 222.3 225.0 128.0 4.08 123.9 Pass-Major Risk ODSN-40-ODSN-40PB1 PN12-ODSN-40881 B 222.3 225.0 128.0 4.08 123.9 Pass-Major Risk ODSN-40-ODSN-40PB2 PN12-ODS11-40PB2 P 222.3 225.0 128.0 4.17 123.8 Pass-Major Risk ODSN-43-ODSN-43 PS15-ODSN-43 PS15 wp0 223.3 225.0 159.1 4.23 154.9 Pass-Major Risk ODSN-48-ODSN-48i IS16-ODSN-48i IS16 wp0: 222.9 225.0 194.3 4.19 190.1 Pass-Major Risk ODSN-5i-ODSN-5i IS3-ODSM-5i IS3 wp09 399.1 400.0 44.2 7.57 36.7 Pass-Major Risk ODSN-6-ODSN-6 PS4-O[ISN-6 PS4 wp01 324.3 325.0 48.7 5.85 42.9 Pass-Major Risk ODSN-8-ODSN-8 PS8-ODSN-8 PS8 wp08-8K 273.8 27t5.0 69.0 5.10 63.9 Pass-Major Risk ODSN-9i-ODSN-9i IS9-ODSN-9i IS9 wp11-8K 273.6 275.0 75.3 5.59 69.7 Pass-Major Risk ODST-39-ODSN-39i IN11 -ODSN-39i IN11 223.7 225.0 121.0 4.12 116.8 Pass-Major Risk ODST-39-ODST-39 Torok D-ODST-39 Torok D 223.6 225.0 121.0 4.21 116.8 Pass-Major Risk ODST-39-ODST-39 Torok D-01DST-39 Torok D 223.6 225.0 121.0 4.21 116.8 Pass-Major Risk ODST-39-ODST-39 Torok D PB1-ODST-39 Tor 223.6 225.0 121.0 4.21 116.8 Pass-Major Risk ODST-45-ODSN-45i PB1 IN13-ODSN-45i PB1 223.1 225.0 173.8 4.32 169.5 Pass-Major Risk ODST-45-ODST-45A-ODST-45A Surveys 223.1 225.0 173.8 4.32 169.5 Pass-Major Risk ODS1-46i-ODST-46i-ODST-46i Torok C 175.0 175.0 180.9 3.21 177.7 Pass-Major Risk O11ST-46i-ODST-46i PB1 -ODST-46i Torok C P 175.0 175.0 180.9 3.21 177.7 Pass-Major Risk ODST-46i-ODST-46i PB2-ODST-46i Torok C P 175.0 175.0 180.9 3.21 177.7 Pass-Major Risk ODST-46i-ODST-46i Torok C PB3-ODST-46i P 175.0 175.0 180.9 3.21 177.7 Pass-Major Risk ODST-47-ODST-47 Torok B-ODST-47 Torok B 223.0 225.0 187.5 4.19 183.3 Pass-Major Risk 3/9/2012 9:21:40AM Page 4 of 5 COMPASS 2003.16 Build 42 1 -------- --- .73 m N N En0 0 N _____________/cn X n ao Iii M / N. . a I Ie,, " N - z Iit w " / J� 25 )11)11. „.. . 41 is d. 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Z Z Z Z Z 0 0 0 0 N N 0 to 0 N N N y 00000 N N 0 0 0 0 00000 N N N 0 N H N N 0 0 to N N 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 000000000000000000000000000000000000000000000000000 El+-+$a4 *mm+}+I **CX41+.+x<D*1m 1:1+-+$0+-f+-+xOT$4++4 f01iI+*m*$41t#l0 x+-fxCC; • tib o— (Lcolr— ft N� u 1 S a 3p l; § ]d CDrt •a. ,I m _ ° ?a 2. • a? g tir 45, w ° I • �� + • ____8 0 iso o „5 . �R It • o >> $ 0 . 4 c �rj r • s. o • 1..t z • 4J ] ZE 0 rn TO • 00 *, 0 'e.1 • RI • 4 moi$ • et ft 4 1 • • p O 1 • Jw C `{' 0 4 • e F. S _t 4,>_ • • • t re,. 0 4 V J? . o J Ei J) o .t) 0 , • 0 4 o 11' tft tif T3 N`. °o/ 2a/ I .• _ a • 1' `~ o � U% 4.1I. \:...... .,_,- icy �L-----1. . O `, y `- 0 I. i kv . A d CmaU .�� s„ I: , • t a I 5 i I i • :Ihtrkct laundry 1 •. h !tux 17TE SE Corner of - Protracted Section,11 Coordinates i i 4 N 6028111.04 i ` E 470989.01 °1' { Ref. AK BLM , • a �• �• Harrison Bay Tract "A" ♦ —24\ r i , �S • # '' • --\ �s �: . ......� ,♦ •�. •• ' .0 Shp le•re0d :~ . % 13 a y0 y U ANL l' • k I • 41111.1111.4.001011P i St rF-,t lifir u lair. ,,,get:„.apir a Roads ta. w�.,:: al-. s o+-+-4.,bf-..� r .. rye':_ 1 r� — 7 i r -ii• 5I ��/ Basis of Location '' J!�� / DS—jmentH West Monu '1011r till IC Coornates Aid lilli N 081.23 •STAKED P1 INFORMATION ONLY pn \•-, ' ii a u Ref. Lownsbury & Assoc. • W D •i c Drawing No. =•� n ----."^• NSK 6.01-d672 1 i • • it G.Dans _ • pop• No.41105 �:��'" ,v19�0•-•••••••✓•LOSS/ _- 11�\��V►ib�a. 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 Meridian NANUQ JOB NO. SHEET DESCRIPTION: Basis of Location 05204 2 of 4 --Alaska 5tate`Pfane -_ . --.__ ______ Se m L►neOft-if -. __._ Well No. Y X Latitude (M Longitude (W) 6L FAL Pad .lev, 1 6,031,151.32 469,920,45 70 29 46,24160 15014 45,46468 3035 107 3,50 2 6,031,146,35 469,915.52 70 29 46,19252 15014 45,60922 3030 1082 13,50 3 6,031,141,39 469,910,59 70 29 46,14354 15014 ,75375 3Q25 108 13,50 6,031,136.48 469,05,61-`70 2-9-46.0948-5---1 50.14 46:0979-9-302-0 1092 13.50 5 6,031,131.4 469,900,74 ' 70 29 4 .04538 15014 46.04252 301- 109- 13,50 6 6,031,126,51 469,895.80 7. 29 45.99660 15014 46.18735 3010 1102 13.50 7 6,031,113.73 469,883.13 70 29 45,87039 15014 46,558.-9 299 1115 13,50 8 6,031,108.73 469,878.21 70 29 45,82102 15014 46,70303 2992 1120 13,50 9 6,031,103.75 469,873,26 70 29 45.77184 15014 46.84814 2987 1125 13,50 10 6,031,098.79 469,868,36 70 29 45,72286 15014 46,99179 2982 1130 13,50 11 6,031,093,84 469,863,39 70 29 45,67398 15014 47,13750 2977 1135 13,50 12 6,031,086,87 469,658,47 70 29 45,62490 15014 47.28174 2972 1140 13,50 13 6,031,076,06 469,545;81 70 29 45,49840 15014 47.65288 2960 1152 13,50 '14 6,031,071,09 469,840,8770 29 45.44932 15014 47.79770 2955 1157 13,50 15 6,031,066.15 469,835,96 70 29 45.40053 15014 47,9416 29 • 116 13.50 16 6,031,06118 469,831,04 70 29 45.35145 15014 48.06588 294 1167 13.50 17 6,031,056,25 469,826,1 70 29 45.30277 15014 48,23042 2`• • 1172 13.50 18 6,031,051.27 469,821.18 7029 45,25359 150 1448,37495 2935 1177 13,50 19 6,031,035,52 469,808, I 70 29 45.12768 15014 48,74668 2922 1189 13, '• 2• 6,031,033.50 469,803.59 70 29 45.07811 15014 48.89061 291 11•• 13.56 21 6,031,028.53 469,798.62 70 29 45,02903 15014 49,03632 2912 1199 13.50 22 6,031,023,58 469,793,67 70 29 44.98014 15014 49,1:144 2-* 1204 13,50 23 6,031,018,57 469,788,76 70 29 44,93067 15014 49,32537 2902 1209 13,50 ' 24 6,031,013.60 469,783,84 70 29 44,88159 15014 4=.46960 289 1214 115# fr • ti 7 is *I0 / 1. .. ., • Philip G.Davi .: •t'.r„%•• Na 4110.5 ••,11 / y4 .... , ...,, 4,:e....:.� .R+� 1 �."••••••....0c4 •• Nit"ii. i..?i. vri_5 u Notes: 1 1, Elevations ore hosed on BP Mean Seo Level, 2, Coordinotes ore based on Alosko State Plane Nod 27, Zone 4. 3, Alt conductors ore within Protracted Section 11. Pioneer Noturcl 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 Eost DATE: 7-12-97 , Umiot Meridien NANUQ JOB NO. SHEET DESCRIPTIO-- -:-- As-built Coordinates 05204 3 of 4 Alaska State Plane Section Line Offset Well No. Y X Latitude (N) Longitude (W) FSL FEL Pad Elev. 11 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 3003 1065 13.50 28 6• ,031,113.39 469,928.86 7• 0 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 7• 0 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 15014 46.96749 2937 1129 13.50 38 6,031,047.99 469,864.14 _ 70 29 45.22304 15014 47.10995 2932 1134 13.50 39 6,031,043.03 469,859.20 7• 0 29 45.17406 15014 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 15014 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 +74,71" 1� SURVEYOR'S CERTIFICATE OF•4 411 ',Cr '••s�� I HEREBY CERTIFY THAT I AM /* r % t'9 S PROPERLY REGISTERED AND / r 4' / , LICENSED TO PRACTICE LAND i'•• • '•" SURVEYING IN THE STATE OF . /. • .,.. ALASKA AND THAT THIS PLAT te ;= • iiip G.Davis o/ REPRESENTS A SURVEY DONE BY t• sr% Me,41104 ;�� ME OR UNDER MY SUPERVISION • �!�9Fo••�••......••'FoSJ� AND THAT I BELIEVE THAT ALL % .40FfSS10NA1�� DIMENSIONS AND OTHER DETAILS f ry t��•.�h+.. ARE CORRECT AS SUBMITTED TO ME BY NANUQ, INC. AS OF JULY 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 Range 7 East DATE: 7-12-07 Umiot Meridian NANUQ JOB NO. SHEET DESCRIPTION: As-built Coordinates 05204 4 of 4 Page 1 of 2 Schwartz, Guy L (DOA) From: Vaughan, Alex[AIex.Vaughan@pxd.com] Sent: Tuesday, March 20, 2012 6:41 PM To: Schwartz, Guy L (DOA) Cc: Tirpack, Robert; Campoamor, Kathy Subject: RE: ODSN-25 (PTD 212-030) Guy, You are correct. The 7" intermediate 2 cement volumes were mistakenly calculated with an 8.5" open hole. Please see the cement volumes below recalculated with a 9.5" open hole. Casing Size: 7" Intermediate 2—single stage Basis: TOC: —10, 743'MD—500' MD above the top of the Kuparuk 40% excess, plus 85' shoe track Total Cement Volume: Preflush 10 bbl water Spacer 40 bbl 12.5 ppg Dual Spacer Primary 64 bbls/306 sx Premium"G" + adds. 1.17 cf/sk Displ 449 bbls mud Temp BHST— 165° F, BHCT—135° F The top of the aluminum billet is 12,120' MD. As we have done on previous dual laterals we will attempt to perform an open hole sidetrack above the aluminum billet and therefore maintain the billet as a contingency should we be unable to perform an open hole sidetrack as programmed. The kick-off depth provided on the permit is incorrect. The actual kick-off depth for ODSN-25L1 is 11,856' MD/6144.2'TVD. Apologies for the inaccuracies. I am available to answer any further questions. We will plan on running a diverter on ODSN-25 as requested. Alex Vaughan Senior Drilling Engineer x PioneerLogoSmall 907.343.2186 (office) 907.748.5478 (mobile) From: Schwartz, Guy L (DOA) [mailto:guy.schwartz@alaska.gov] Sent: Tuesday, March 20, 2012 5:28 PM To: Vaughan, Alex Cc: Tirpack, Robert Subject: ODSN-25 (PTD 212-030) Alex/Rob, I was reviewing the procedure I have a couple of?s 1)The cement volume for the 7" intermediate seems to be based on 8.5" OH. Should it be 9.5" OH? 2)Where is the Al Billet to be set for the kickoff of L1? Your summary on cover letter states the kickoff 3/21/2012 Page 2 of 2 point is up inside the 7" intermediate at 11796' md. Thanks for the good detail in the drilling procedure section. ... the Commission will require a diverter based on the stepout from the nearest surface casing point Regards, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) Statement of Confidentiality: This message may contain information that is privileged or confidential. If you receive this transmission in error,please notify the sender by reply e-mail and delete the message and any attachments. 3/21/2012 OVERSIZED DOCUMENT INSERT This file contains one or more oversized documents. These materials may be found in the original hard file or check the parent folder to view it in digital format. TRANSMITTAL LETTER CHECKLIST WELL NAME 6�--1-Lk__ C '2 PTD# l �� Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD:"— V C-(L- POOL: C%Z'-\ LLQ(( - LL Check Box for 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 C' . / (If last: b1ts: Permit No. '7— ;API No. 50- between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to 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. 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