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210-054
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. LQ - 05k-1- Well History File Identifier Organizing(done) ❑ Two-sided III II'III 11111111 ❑ Rescan Needed III IllilliUl 111111 RESC DIGITAL DATA OVERSIZED (Scannable) olor Items: ❑ Diskettes, No. ❑ Maps: Greyscale Items: ❑ Other, No/Type: ❑ Other Items Scannable by a Large Scanner ❑ Poor Quality Originals: OVERSIZED (Non-Scannable) ❑ Other: ❑ Logs of various kinds: NOTES: ❑ Other:: BY: Date: ` 1 /s/ P Project Proofing N1111111111111 BY: AM Date: 3 I /s/ /, Ir Scanning Preparation x 30 = /5V + V TOTAL PAGES / 5"e (Count does not include cover sheet) BY: Maria Date: 3 17 i Li' lsl Production Scanning 11111E1111111 II III Stage 1 Page Count from Scanned File: /S (Count does include cove sheet) 7 Pa.- Count Matches Number in Scanning Pre aration: YES NO BY: MO Date: 31 17 7//U . /s/Stage 1 If NO in stage 1, page(s) discrepancies were und: YES NO BY: Maria Date: /s/ Scanning is complete at this point unless rescanning is required. IIIIIIIIIIIHIIIII ReScanned 11111E111110 III BY: Maria Date: /s/ Comments about this file: Quality Checked III 1 III III II co ' 5 �'�U) c a. d c c o 0 20 g a) 0 p m g au_ —,�� —�� 0 m co 0_ z z 7 m 7 g CO aE- 'mc mcn > J > W0 N Z � N C �' �' 2' as as W O) W 0d r) U � ail V c pas 0 0 0 0 = H a F- a °- p- a� 0 .c c j a) w2 m E Ep ) EE Ep m c i° oLL in w �_ �_ r) E 5Uu 5 , g ° > g8 > m Eo c ,E g,8 N a3 O Q' .0 W >W W W ° _W N ° > ,1/4' L. W LL w a 0 ci Z i ° U wwrn ~ 0 c > aaa c > aa) as 0 0 0 0 0 ? 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I o Z > > > > , CI G) U c i yr in E J I ca N N co N a) a) a) a) E fa Z 7 i f N CC CC L c C C g I a) C C C C LL it O OI CT CI) W a) d O 0 0 0 0 r J J 0 0 CO C E Z U U U U O O O C N 7 CO a) 7 7 7 7 O co Z c c c c g g g g cL N R O 0 ! Z O a) `a) N N O E O H a) d tV 7 ITN- N N I�' Z « CO W O Z to N O O r , a) O a ° as .r E a' M Z g .c9 co v `C i ca E CL y w E_ — J a a c z 0 0 o o v c v � cn .2 N Z W O \ ,1 ,1 ? -'0 ` \ \ N I 0 E ; 5 a g m °, _ `' 0 , o f' a 'a,c2 a 0 0) 0) rn 0 a m rn rn 0 m a° g 0 I- J O I- W 0 0 0 0 Ce W 0 0 J J W_ I I 9 I 1r\ N N ' co z N I d eh 0 I I o N I 1 O 1 Z 3 -J Q J_ A V) O O '- ✓ N = i O 0 R CO CU CO Cl ii re C o g 7 Z, Z a H 0 w z �Q Ix W 1 w z z > U 0 J Z it o g N o c O 7 N 0 .I J O. m Z .! O �. E aN a o ON a LL O0 E V O U T.' r , it 0 1 J J a r Z N 0 H0 I S O_ o � G N J Z ftWl M re 0 CO D o ri 1 a 1 0 0 ~ ° a c o cu Z E /, cis Z cu 1 N 7 Z 1 I 1 O O T wr N H,.: Z m cu O d' 3 r d O N ._ U.Z P• .` M J N cu CC N O .ca N O 0 T> E o. E ° 0 m L cu E 0 a Q 0 <m 0 10 PIONEER NATURAL RESOURCES ALASKA Letter of Transmittal Date: December 27, 2010 FROM TO Shannon Koh AOGCC Pioneer Natural Resources Attn: Christine Shartzer 700 G Street, Suite 600 333 W. 7th Avenue, Suite 100 Anchorage, AK 99501 Anchorage, AK 99501 INFORMATION TRANSMITTED ❑ Letter ❑ Maps X Reports X Other- Logs ❑ Agreement DETAIL QTY DESCRIPTION 4 End of Well Reports ODSN-16 (API: 50-703-20620-0000) ODSN-16L1 (API: 50-703-20620-6000) 16 Well Logs ODSN-17 (API: 50-703-20622-0000) ODSN-17L1 (API: 50-703-20622-6000) 4-Engineering Logs, 4-Gas Ratio Logs, 4- Formation Evaluation Logs (2"&5") We request that all data be treated as confidential informati t qrk ,7 i--a =1 v _,_ ___. 5 Received by 6. Da44;0 IN , ck. ; :,. , , .a, ,tea' Please sign and return one copy to Pioneer Natural Resources, Inc., ATTN: Shannon Koh 700 G Street, Suite 600, Anchorage, AK 99501 907-343-2193 fax ow-o43 a o sv.-3' 907-343-2128 phone aio -/q< aas�5- 0/o-O6 ao6- 9 a.in -OS-44 a o PIONEER NATURAL RESOURCES ALASKA Letter of Transmittal Date: October 25, 2010 FROM TO Shannon Koh AOGCC Pioneer Natural Resources Attn: Christine Shartzer 700 G Street, Suite 600 333 W. 7th Avenue, Suite 100 Anchorage, AK 99501 Anchorage, AK 99501 INFORMATION TRANSMITTED ❑ Letter ❑ Maps X Report X Other- logs ❑ Agreement DETAIL QTY DESCRIPTION ODSN-16 (API: 50-703-20620-0000) ODSN-16 L1 (API: 50-703-20620-6000) 1 Reports 1 Report End of Well Report 8 Well Logs 8 Well Logs 2- 2" MD Formation Evaluation Log 2- 2" MD Engineering Log 2- 2" MD Gas Ratio Log 2- 5" MD Formation Evaluation Log We request that all data be treated as confidential informat' nycul r- - Received by: - Date: 1' Please sign and return one copy to Pioneer Natural esourcesvInc ., ATTN: Shannon Koh 700 G Street, Suite 600, Anchorage, AK 99501 907-343-2190 fax '°� o is .1 RFeFiVFD - - STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION SLP 13 Z010 WELL COMPLETION OR RECOMPLETION REPORT ► Q,� , i �, �a$ sion la.Well Status: Oil 0 Gas ❑ SPLUG ❑ Other ❑ Abandoned ❑ Suspended❑ lb.WAO'Ct' ,�IQ aSS: 20AAC 25.105 20AAC 25.110 Development Q =.b to E#°t trto ry ❑ GINJ ❑ WINJ❑ WAG ❑ WDSPL❑ No.of Completions: _One Service ❑ Stratigraphic Test❑ 2.Operator Name: 5.Date Comp.,Susp.,or 12.Permit to Drill Number: Pioneer Natural Resources Alaska, Inc. Aband.: 8/12/2010 210-054 3.Address: 700 G Street,Suite 600 6.Date Spudded: 13.API Number: Anchorage,AK 99501 7/19/2010 50-703-20620-60-00 4a.Location of Well(Governmental Section): 7.Date TD Reached: 14.Well Name and Number: Surface: 2950'FSL, 1162'FEL, Sec. 11,T13N, R7E, UM 7/23/2010 ODSN-16L1 Top of Productive Horizon: 8.KB(ft above MSL): 56.2' 15.Field/Pool(s): 302'FSL,4829'FEL, Sec. 10,T13N, R7E, UM GL(ft above MSL): 13.5' Total Depth: 9.Plug Back Depth(MD+TVD): Oooguruk-Nuiqsut Oil Pool 352'FSL, 5256'FEL, Sec.4,T13N, R7E, UM N/A 4b.Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16.Property Designation: Surface: x- 469835.96 y- 6031066.15 Zone-AsP4 20,513'MD/6128'TVD ADL 355036/ADL 355037 TPI: x- 460881.45 y- 6028459.27 Zone-ASP 4 11.SSSV Depth(MD+TVD): 17.Land Use Permit: Total Depth: x- 455191.95 y- 6033821.95 Zone-AsP4 1983'MD/1917'TVD 417497 18.Directional Survey: Yes U No U 19.Water Depth,if Offshore: 20.Thickness of Permafrost MD/TVD: (Submit electronic and printed information per 20 AAC 25.050) N/A (ft MSL) 866'MD/829'TVD 21.Logs Obtained(List all logs here and submit electronic and printed information per 20AAC25.071): 22.Re-drill/Lateral Top Window MD/TVD: Gyro,GR, DIR, GABI, DM, PWD, RES,ADI, EWR, DDS, DGR,ALD,CTN 12,819'MD/6209'TVD 23. CASING,LINER AND CEMENTING RECORD WT.PER SETTING DEPTH MD SETTING DEPTH TVD AMOUNT CASING FT GRADE TOP BOTTOM TOP BOTTOM HOLE SIZE CEMENTING RECORD PULLED 4-1/2" 12.6# HYD 521 12,506' / 20,311''� 6159' 6146' 6-1/8" Uncemented 24.Open to production or injection? Yes el No❑ If Yes,list each 25. TUBING RECORD interval open(MD+TVD of Top&Bottom;Perforation Size and Number): SIZE DEPTH SET(MD) PACKER SET(MD/TVD) 7"x2-7/8"Hydro Packer 2-7/8",6.4#, 12 259' 4929'MD/3651'TVD; L-80, BTC-M Liner Top Packer See Attachment, Pg. 3 12,522'MD/6162'TVD f`.�. ° ° - - 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. GOGht�LE7lU1; DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED • 1' 2110' Freeze protect 11-3/4'x 7"annulus w/131 bbls diesel //A- 27. PROI5UCTI N TEST Date First Production: Method of Operation(Flowing,gas lift,etc.): Date of Test: Hours Tested: Production for Oil-Bbl: Gas-MCF: Water-Bbl: 'Choke Size: Gas-Oil Ratio: Test Period ,-p Flow Tubing Casing Press: Calculated Oil-Bbl: Gas-MCF: Water-Bbl: Oil Gravity-API(corr): Press. 24-Hour Rate 28. CORE DATA Conventional Core(s)Acquired? Yes ❑ No 0 Sidewall Cores Acquired? Yes ❑ No El If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and presence of oil,gas or water (submit separate sheets with this form,if needed).Submit detailed descriptions,core chips,photographs and laboratory analytical results per 20 AAC 25.071. / None RBDMS SEP 14 Form 10-407 Revised 12/2009 CONTINUED ON REVERSE •/ Sublllit l .l G go 29. GEOLOGIC MARKERS (List all formations and markers encountered): 30. FORMATION TESTS NAME MD TVD Well tested? U Yes H No If yes,list intervals and formations tested, briefly summarizing test results.Attach separate sheets to this form,if needed, Permafrost-Top 841' 838' and submit detailed test information per 20 AAC 25.071. Permafrost- Base 1707' 1667' Top West Sak 2415' 2285' Top Torok 8823' 5003' None Top HRZ 10,762' 5743' Top Kuparuk C 11,686' 6014' Top Nuiqsut 12,633' 6181' Formation at total depth: 20,513' 6128' 31. List of Attachments: Summary of Daily Drilling Operations,Well Schematic Diagram, Survey 32. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact: Alex Vaughan,343-2186 Printed Name: Verj. ohns_ Title: Drilling Superintendent Signature: 7(3/(6 Phone: 343-2111 Date: 9/13/2010 Well Name:ODSN- .L1 Permit No.:210-054 Prepared By:Kathy Campoamor,343-2183 INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item 1 b: Classification of Service wells: Gas Injection,Water Injection,Water-Alternating-Gas Injection,Salt Water Disposal,Water Supply for Injection,Observation,or Other.Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI(Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevations in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits(ex:50-029-20123-00-00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval(multiple completion),so state in item 1,and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing,Gas Lift,Rod Pump,Hydraulic Pump,Submersible,Water Injection,Gas Injection,Shut-in,or Other(explain). Item 28: Provide a listing of intervals cored and the corresponding formations,and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation,and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 12/2009 Pioneer Natural Resources Alaska Inc. ODSN-16L1 Page 3 Form 10-407, Well Completion or Recompletion Report and Log Attachment - Box #24 24. Open to production or injection 4-1/2", 12.6#, L-80 Hyd 521 Uncemented Liner Perforated Pups w/ 6-1/2" Holes @ depths listed: MD TVD 13,140' - 13,144' 6249' - 6249' 13,339' - 13,344' 6273' - 6273' 13,539' - 13,543' 6298' - 6298' 13,737' - 13,742' 6322' - 6322' 13,936' - 13,941' 6346' - 6346' 14,136' - 14,141' 6370' - 6370' 14,335' - 14,340' 6395' - 6395' 14,535' - 14,540' 6419' - 6419' 14,735' - 14,740' 6443' - 6443' 14,933' - 14,938' 6468' - 6468' 15,133' - 15,137' 6492' - 6492' 15,333' - 15,338' 6516' - 6516' 15,528' - 15,533' 6540' - 6540' 15,728' - 15,732' 6565' - 6565' 15,926' - 15,930' 6589' - 6589' 16,123' - 16,127' 6613' - 6613' 16,322' - 16,327' 6637' - 6637' 16,521' - 16,526' 6661' - 6661' 16,720' - 16,725' 6686' - 6686' 16,915' - 16,920' 6710' - 6710' 17,111' - 17,116' 6733' - 6733' 17,309' - 17,314' 6758' - 6758' 17,508' - 17,513' 6782' - 6782' 17,707' - 17,712' 6806' - 6806' 17,907' - 17,912' 6831' - 6831' 18,108' - 18,113' 6855' - 6855' 18,308' - 18,313' 6880' - 6880' 18,508' - 18,512' 6904' - 6904' 18,708' - 18,712' 6928' - 6928' 18,907' - 18,912' 6953' - 6953' 19,107' - 19,112' 6977' - 6977' 19,307' - 19,311' 7001' - 7001' 19,506' - 19,511' 7025' - 7025' 19,705' - 19,710' 7050' - 7050' 19,905' - 19,910' 7074' - 7074' 20,105' - 20,110' 7099' - 7099' 20,266' - 20,270' 7118' - 7118' I • PIONEER Current Schematic -State Well Name: ODSN-16/ODSN-16L1 NATURAL RESOURCES Well Profile:HORIZONTAL-Lateral 1,9/13/2010 10:33:...Well Attributes Schematic-Actual API/UWI Field Name 'Well Status Total Depth(ftKB) r 50-703-20620-00-00/ Oooguruk Unit DRILLED 20,513.0 2-11 50-703-20620-60-00 Casing Strings Conductor,158.0ftKB I Casing Description String 0... String ID...Top(ftKB) Set Depth(ft.. Set Dept... String Or... String Top Thrd String Wt(I... 1-1 Conductor 16 14.670 47.7 158.0 158.0 H40 Welded 109.00 1-7 Casin Components item Top Depth I 1-11 I No. Item Description Top(ftKB) (TVD)(ft(B) OD(in) ID(in) Comment 1-1 Casing Joints 47.7 47.7 16 14.670 11-151 Surface,3,589.4ftKB It 11-181 Casing Description String 0... String ID...Top(ftKB) Set Depth(ft.. Set Dept.. String Gr... String Top mm String Wt(I... Surface 113/4 10.772 39.5 3,589.4 2,988.2 L-80 Hydril 521 60.00 1'221 3 1 Casin Components �® Item Top Depth 3-3 No. Item Description Top(ftKB) (TVD)(ftKB) OD(in) ID(in) Comment 2-1 RKB to Top of VG Csg Hgr 39.5 39.5 11 3/4 10.772 . I2-7I 2-7 HES 11-3/4"Float Shoe 3,587.7 2,987.6 11 3/4 10.772 ! 1-25 • • Intermediate 2 Tie Back,9,262.1ftKB 1-291 ' Casing Description String 0... String ID...Top(ftKB) Set Depth(ft... Set Dept... String Gr... String Top Thrd String Wt(I... _:_ 5-8 Intermediate 2 7 6.276 38.1 9,262.1 5,168.7 L-80 BTC-M 26.00 __ 4-1 Tie Back ,' = .=4-2 Casing Components Iliti Item Top Depth I No• Item Description Top(ftKB) (TVD)(ftKB) OD(in) ID(in) Comment 5-8 No-Go Collar w/19'seal 9,242.2 5,160.9 8.29 assembly 1-33 : 1 Intermediate 1,9,453.0ftKB 1-34"r.! Casing Description String 0... String ID...Top(ftKB) Set Depth(ft.. Set Dept.. String Gr... String Top Thrd String Wt(I...Intermediate 1 9 5/8 8.835 3,374.7 9,453.0 5,244.0 L-80 HYD 521 40.00 7-8 Casing Components 17-9 Item g Top Depth No. Item Description Top(ftKB) (TVD)(ftKB) OD(in) ID(in) Comment 7-13 3-1 Tie Back 3,374.7 2,896.6 9 5/8 8.835 7-18 7-18 3-2 Packer 3,396.4 2,906.4 9 5/8 8.835 7-20 3-3 Hanger 3,398.5 2,907.4 9 5/8 8.835 7-22 3-11 Float Shoe 9,451.0 5,243.3 9 5/8 8.835 7-24 Intermediate 2 Liner,12,675.0ftKB 7-26 Casing Description String 0... String ID...Top(ftKB) Set Depth(ft... Set Dept.. String Gr... String Top Thrd String Wt(I... • 7-28 Intermediate 2 7 6.276 9,254.5 12,675.0 6,184.9 L-80 Hydril 511 26.00 7-30 Liner mem 7-32 Casin Components ■ 7-34 Item Top Depth 7-36 No. Item Description Top(ftKB) (TVD)(ftKB) OD(in) ID(in) Comment_--- ■T 7-38 4-1 WFRD Tie Back PBR 9,254.5 5,165.7 8 1/4 6.276 7 42 4-2 WFRD TSP Liner Top 9,275.4 5,173.2 8 1/4 6.276 744 Packer •• 7-46 4-4 WFRD PHR Liner Hanger 9,280.2 5,175.2 8 5/16 6.276 � i 7-48 4-13 7"Liner Shoe 12,672.9 6,184.5 7 6.276 Ray Oil Tool SB Float 7-50 Shoe � �7-52 Production Plop&Dr.. ,18,515.OftKB 7-56 Casing Description String 0... String ID... Top(ftKB) Set Depth(ft... Set Dept.. String Or... String Top Thrd String Wt(I... � Production 41/2 12,818.6 18,515.0 6,146.3 L-80 Hydril 521 12.60 ..1�7-58 ■" Plop&Drop • 7-60 i 7-62 Casing Components ' 7-64 Item Top Depth ill:�7-66 No. Item Description Top(ftKB) (TVD)(ftKB) OD(in) ID(in) Comment III 7-68 6-10 Aluminum Liner Top Billet 12,818.6 6,205.1 6 •17-70 6-12 Ported Pup 12,845.0 6,207.3 4 1/2 'D 7-72 6-14 Ported Pup 13,050.2 6,224.1 4 1/2 '�J 7-74 6-16 Ported Pup 13,249.6 6,239.4 4 1/2 • . 7 76• 6-18 Ported Pup 13,449.9 6,253.3 4 1/2 mom�7-78 ■� 7 80 6-20 Ported Pup 13,654.8 6,263.5 4 1/2 ;��7-82 6-22 Ported Pup 13,859.8 6,267.8 4 1/2 ��7-84 6-24 Ported Pup 14,060.2 6,251.9 4 1/2 ■��7-86 6-26 Ported Pup 14,260.2 6,240.6 4 1/2 `i 7-88 6-28 Ported Pup 14,459.5 6,222.3 4 1/2 • T 7-90 6-30 Ported Pup 14,660.6 6,210.6 4 1/2 7-92 Page 1/3 Report Printed: 9/13/2010 PIONEER Current Schematic -State Well Name: ODSN-16/ODSN-16L1 NATURAL RESOURCES Well Profile:HORIZONTAL-Lateral 1,9/13/2010 10:33:...Casin Components Schematic-Actual Item Top Depth .. No. Item Description Top(ftKB) (TVD)(ftKB) OD(in) ID(in) Comment 2-1 I 6-32 Ported Pup 14,860.4 6,205.3 4 1/2 6-34 Ported Pup 15,059.6 6,198.6 4 1/2 6-36 Ported Pup 15,261.0 6,197.1 4 1/2 I i6-38 Ported Pup 15,463.9 6,193.2 4 1/2 {1-1 6 40 Ported Pup 15,670.6 6,197.0 4 1/2 11-71 6-42 Ported Pup 15,871.1 6,198.9 4 1/2 6-44 Ported Pup 16,070.6 6,217.2 4 1/2 '1 1-11 1 6-46 Ported Pup 16,269.0 6,228.9 4 1/2 11-151 6-48 Ported Pup 16,472.7 6,236.7 4 1/2 1-18 6-50 Ported Pup 16,678.5 6,239.5 4 1/2 �p 6-52 Ported Pup 16,881.8 6,242.0 4 1/2 ® ® 6-54 Ported Pup 17,085.5 6,241.5 4 1/2 -` �® 6-56 Ported Pup 17,292.8 6,233.7 4 1/2 3 3 6-58 Ported Pup 17,497.7 6,219.2 4 1/2 6-60 Ported Pup 17,702.9 6,203.6 4 1/2 ■ 1-25 i; 2-7, 6-62 Ported Pup 17,908.1 6,189.4 4 1/2 • 6-64 Ported Pup 18,109.5 6,176.5 4 1/2 1.1291 ' S 8 6-66 Ported Pup 18,308.9 6,163.8 4 1/2 6-68 Ported Pup 18,469.8 6,150.3 4 1/2 _��4-1 6-70 Float Shoe 18,513.7 6,146.4 4 1/2, I111 4.4 Casing Strings 3-11 Production Liner L-1,20,310.7ftKB ■. 7-1 Casing Description String 0... String ID... Top(ftKB) Set Depth(ft... Set Dept.. String Gr... String Top Thrd String Wt(I... ' 7-2 Production 4 1/2 3.958 12,505.7 20,310.7 6,126.8 L-80 Hyd 521 12.60 1-33 7 3 Liner L-1 1-34 h. 1_f 13 Casing Components _ Item Top Depth •_ �• Item Description Top(ftKB) (TVD)( ) OD(in) ID(in) Comment 7-1 Tie Back Receptacle 12,505.7 6,225.9 4 1/2 3.958 7-2 Liner Top Packer 12,521.0 6,220.7 4 1/2 3.958 3 7-3 5"BTC Collar 12,523.5 6,219.9 4 1/2 3.958 6 7-4 Liner Hanger 12,524.3 6,219.6 4 1/2 3.958 8 r 7-20 7-7 Resman Tracer Pup 12,686.4 6,192.8 4 1/2 3.958 7-22 7-8 Blank Liner 12,696.6 6,192.7 4 1/2 3.958 7-24 7-9 Weatherford Sliding Sleeve 12,813.7 6,205.0 4 1/2 3.958 7-26 7-13 Oil Swell Packer 12,908.2 6,215.8 4 1/2 3.958 x� 7-30 7-16 Resman Tracer Pup 12,970.0 6,217.7 4 1/2 3.958 ■�� 7-32 7-18 Perforated Pup Joint 13,139.6 6,212.7 4 1/2 3.958 �� 7-34 7-20 Perforated Pup Joint 13,339.4 6,202.9 4 1/2 3.958 7-36 7-22 Perforated Pup Joint 13,538.7 6,202.8 4 1/2 3.958 • 7-38 7-24 Perforated Pup Joint 13,737.1 6,194.5 4 1/2 3.958 • 7-40 7-26 Perforated Pup Joint 13,936.5 6,192.0 4 1/2 3.958 7-42 me 7-28 Perforated Pup Joint 14,136.4 6,197.2 4 1/2 3.958 MI 7-44 7 6 7-30 Perforated Pup Joint 14,335.0 6,200.1 4 1/2 3.958 m• il• 7-48 7-32 Perforated Pup Joint 14,535.2 6,200.4 4 1/2 3.958 7-50 7-34 Perforated Pup Joint 14,734.8 6,197.1 4 1/2 3.958 7-52 7-36 Perforated Pup Joint 14,933.2 6,203.6 4 1/2 3.958 m• il '��7-54 7-38 Perforated Pup Joint 15,132.6 6,190.9 4 1/2 3.958 ;��7 58 7-40 Perforated Pup Joint 15,333.5 6,180.7 4 1/2 3.958 on 7 7-42 Perforated Pup Joint 15,528.1 6,173.8 4 1/2 3.958 'i 7-60 me. 7-62 7-44 Perforated Pup Joint 15,727.6 6,165.4 4 1/2 3.958 7-64 7-46 Perforated Pup Joint 15,925.6 6,159.6 4 1/2 3.958, �7-66 7-48 Perforated Pup Joint 16,122.7 6,157.1 4 1/2 3.958 -�7-68 7-50 Perforated Pup Joint 16,321.9 6,158.5 4 1/2 3.958 7-52 Perforated Pup Joint 16,521.0 6,160.2 4 1/2 3.958 'I I 7-72 7-54 Perforated Pup Joint 16,720.3 6,160.0 4 1/2 3.958 ��7-74 • 7-7g 7-56 Perforated Pup Joint 16,915.3 6,163.7 4 1/2 3.958 t "'�7-78 7-58 Perforated Pup Joint 17,111.4 6,164.6 4 1/2 3.958 7-80 7-60 Perforated Pup Joint 17,309.0 6,164.0 4 1/2 3.958 .��7-82 7-62 Perforated Pup Joint 17,508.2 6,158.5 4 1/2 3.958 •me 7 84 7-64 Perforated Pup Joint 17,707.4 6,151.9 4 1/2 3.958 a t 7-86 7-66 Perforated Pup Joint 17,907.2 6,150.6 4 1/2 3.958 • �7-90 7-68 Perforated Pup Joint 18,108.4 6,147.9 4 1/2 3.958 t 11=0 7-92 7-70 Perforated Pup Joint 18,308.5 6,143.1 4 1/2 3.958 Page 2/3 Report Printed: 9/13/2010 PIONEER Current Schematic -State well Name: ODSN-161 ODSN-16L1 NATURAL RESOURCES Well Profile:HORIZONTAL-Lateral 1,9/13/2010 10:33:...Casing Components Schematic-Actual Item Top Depth P No. Item Description Top(ftKB) (TVD)(ftKB) OD(in) ID(in) Comment I 2-11 7-72 Perforated Pup Joint 18,507.6 6,144.8 4 1/2 3.958 # 7-74 Perforated Pup Joint 18,707.8 6,149.2 4 1/2 3.958 7-76 Perforated Pup Joint 18,907.0 6,149.9 4 1/2 3.958 I7-78 Perforated Pup Joint 19,107.2 6,152.4 4 1/2 3.958 i iL111- 7-80 Perforated Pup Joint 19,306.6 6,154.3 4 1/2 3.958 11-7 `- 7-82 Perforated Pup Joint 19,506.0 6,152.8 4 1/2 3.958 7-84 Perforated Pup Joint 19,705.3 6,148.3 4 1/2 3.958 1-11 ' 7-86 Perforated Pup Joint 19,905.0 6,147.9 4 1/2 3.958 11-151 ` 7-88 Perforated Pup Joint 20,105.3 6,136.6 4 1/2 3.958 1 18 7-90 Perforated Pup Joint 20,265.7 6,129.8 4 1/2 3.958 7-92 Shoe(Essentric Nose) 20,309.3 6,127.0 4 1/2 3.958 ® .•__ ® Tubing Strings i• -_- J® Tubing Description String 0... String I... Top(ftKB)Set Depth(... Set Dep... String Wt... String G... String Top T... ' 3 3 Tubing-Production 2 7/8 2.441 35.2 12,258.8 6,115.3 6.40 L-80 BTC-M Tubing Components 2-7 Item Top Depth 1-25 s No. Item Description Top(MB) (ND)(ftKB) OD(in) ID(in) Comment i 1-7 SCSSV(EUE-M BxP) 2,014.5 1,944.0 2 7/8 2.441 11-291 —!1 5-8 1-11 Vanoil GLM w/1.5"Dummy 2,525.8 2,367.9 2 7/8 2.441 4-1 1-15 HES 2.313 X Nipple 2,637.0 2,447.0 2 7/8 2.441 j I 4-2 1-18 WFT 7"x 2 7/8"Hydro 2,713.5 2,501.6 2 7/8 2.441 �� '��43.111 Packer w/PW 1-22 HES 2.313 X Nipple 2,789.5 2,555.2 2 7/8 2.441 7 1 1-25 GLM 1.5"FO-2 w/dummy 5,070.9 3,717.4 2 7/8 2.441 7-2 1-29 HES"X"Nipple w/RHC-M 5,149.8 3,752.0 2 7/8 2.313 1-33 li 4 1-33 ,Auto Divert Valve(ADV) 12,188.3 6,103.3 2 7/8 2.441 4-13 1-34 Baker Centrilift ESP pump 12,198.1 6,104.9 2 7/8 2.441 a ® assy 7-8 17-9 17-13 7-16 7-18 7-20 7-22 7-24 7-26 ■, 7-28 ` 7-30 .Em 7-32 7-34 BI m 7-36 ■r 7-38 mm II 7-40 �5 7-42 7-44 ' 7-46 ` 7-48 55 7-50 7-52 III 7-54 am f5 7-56 . 7-58 'N I 7-60 NI 7-62 7-64 lJ 7-68 7-68 lir ∎-I 7-70 to 7-72 RI IM 7-74 BS f 7-76 .B 7-80 7-80 s-J 7-82 ��7-84 ��7-86 .T 7-88 Ins 7-90 7-92 Page 3/3 Report Printed: 9/13/2010 • - Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Site: ` Oooguruk Drill Site MD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Project Oooguruk Development Map System: US State Plane 1927(Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927(NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Well ODSN-16-Slot ODS-16 Well Position +N/-S 0.00 ft Northing: 6,031,061.18 ft Latitude: 70°29'45.351 N', +E/-W 0.00 ft Easting: 469,831.04 ft Longitude: 150° 14'48.086 W Position Uncertainty 0.00 ft Wellhead Elevation: ft Ground Level: 13.50 ft Wellbore ODSN-16L1 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (?) (?) ° (nT) IGRF200510 12/31/2009 21.99 80.81 57,759 Design ODSN-16L1 PN13 Audit Notes: Version: 1.0 Phase: ACTUAL Tie On Depth: 12,761.00 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (?) 42.70 0.00 0.00 255.96 Survey Program Date 7/27/2010 From To .,; (ft) (ft) Survey(Wellbore) Tool Name Description Y 1, - , Survey Date 150.00 1,046.00 ODSN-16 Gyro(ODSN-16) SR-Gyro-SS Fixed:v2:surface readout gyro single shot 5/21/2010 1: 1,145.33 3,537.45 ODSN-16 MWD 1 (ODSN-16) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 5/22/2010 1: 3,655.38 9,439.50 ODSN-16 MWD2(ODSN-16) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 6/14/2010 t 9,471.18 12,637.91 ODSN-16 MWD3(ODSN-16) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 6/23/2010 1: 12,682.19 12,761.00 ODSN-16 MWD 4(ODSN-16) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 7/8/2010 12: 12,788.92 20,468.57 ODSN-16L1 MWD 5(ODSN-16L1) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 7/20/2010 1: Survey Map Map Vertical MD Inc Azi TVD TVDSS +N/-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°/100') (ft) Survey Tool Name 42.70 0.00 0.00 42.70 -13.50 0.00 0.00 6,031,061.18 469,831.04 0.00 0.00 UNDEFINED 150.00 0.30 301.52 150.00 93.80 0.15 -0.24 6,031,061.33 469,830.80 0.28 0.20 SR-Gyro-SS(1) 171.00 0.19 326.78 171.00 114.80 0.21 -0.31 6,031,061.39 469,830.73 0.72 0.25 SR-Gyro-SS(1) 204.00 0.61 283.74 204.00 147.80 0.29 -0.51 6,031,061.48 469,830.53 1.48 0.42 SR-Gyro-SS(1) 234.00 0.89 287.53 234.00 177.80 0.40 -0.88 6,031,061.58 469,830.16 0.95 0.76 SR-Gyro-SS(1) 265.00 1.24 286.67 264.99 208.79 0.57 -1.44 6,031,061.76 469,829.61 1.13 1.25 SR-Gyro-SS(1) 323.00 1.90 297.15 322.97 266.77 1.19 -2.89 6,031,062.38 469,828.15 1.24 2.52 SR-Gyro-SS(1) I 354.00 2.32 308.63 353.95 297.75 1.82 -3.84 6,031,063.01 469,827.21 1.92 3.28 SR-Gyro-SS(1) I 446.00 5.14 327.61 445.75 389.55 6.46 -7.50 6,031,067.67 469,823.56 3.31 5.71 SR-Gyro-SS(1) 1 477.00 6.13 330.91 476.60 420.40 9.08 -9.05 6,031,070.29 469,822.03 3.36 6.58 SR-Gyro-SS(1) 7/27/2010 2:55:12PM Page 2 COMPASS 2003.16 Build 428 Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Welibore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey Map Map Vertical MD Inc Azi TVD TVDSS +N/-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°/100') (ft) Survey Tool Name 508.00 6.69 330.43 507.40 451.20 12.09 -10.75 6,031,073.32 469,820.34 1.81 7.49 SR-Gyro-SS(1) 538.00 6.52 326.15 537.20 481.00 15.03 -12.56 6,031,076.26 469,818.54 1.74 8.53 SR-Gyro-SS(1) 570.00 5.78 319.04 569.02 512.82 17.75 -14.63 6,031,078.99 469,816.49 3.31 9.88 SR-Gyro-SS(1) 602.00 5.50 309.15 600.87 544.67 19.94 -16.87 6,031,081.19 469,814.25 3.16 11.53 SR-Gyro-SS(1) 633.00 5.35 300.65 631.73 575.53 21.61 -19.27 6,031,082.87 469,811.86 2.63 13.45 SR-Gyro-SS(1) 665.00 5.69 284.33 663.58 607.38 22.77 -22.09 6,031,084.04 469,809.05 5.00 15.90 SR-Gyro-SS(1) 697.00 6.90 269.63 695.39 639.19 23.15 -25.55 6,031,084.43 469,805.59 6.27 19.17 SR-Gyro-SS(1) 729.00 8.01 261.86 727.12 670.92 22.82 -29.68 6,031,084.12 469,801.46 4.68 23.25 SR-Gyro-SS(1) 792.00 9.20 264.17 789.41 733.21 21.69 -39.03 6,031,083.02 469,792.10 1.97 32.60 SR-Gyro-SS(1) 855.00 9.49 270.85 851.57 795.37 21.25 -49.24 6,031,082.63 469,781.90 1.78 42.61 SR-Gyro-SS(1) I I 920.00 9.49 273.41 915.69 859.49 21.65 -59.94 6,031,083.07 469,771.19 0.65 52.90 SR-Gyro-SS(1) 982.00 8.78 275.65 976.90 920.70 22.42 -69.75 6,031,083.88 469,761.38 1.28 62.23 SR-Gyro-SS(1) 1,046.00 9.77 276.57 1,040.06 983.86 23.52 -80.01 6,031,085.02 469,751.13 1.56 71.91 SR-Gyro-SS(1) 1,145.33 11.80 282.23 1,137.63 1,081.43 26.64 -98.31 6,031,088.21 469,732.85 2.30 88.91 MWD+IFR2+MS+sag(2) 1,188.33 12.72 283.58 1,179.65 1,123.45 28.68 -107.21 6,031,090.29 469,723.96 2.24 97.04 MWD+IFR2+MS+sag(2) 1,252.64 14.87 284.03 1,242.10 1,185.90 32.35 -122.10 6,031,094.02 469,709.09 3.35 110.60 MWD+IFR2+MS+sag(2) 1,300.07 17.36 284.10 1,287.67 1,231.47 35.54 -134.87 6,031,097.27 469,696.33 5.25 122.21 MWD+IFR2+MS+sag(2) 1,346.71 18.20 283.91 1,332.08 1,275.88 38.99 -148.69 6,031,100.77 469,682.53 1.81 134.78 MWD+IFR2+MS+sag(2) 1,394.22 18.11 283.56 1,377.22 1,321.02 42.51 -163.07 6,031,104.34 469,668.16 0.30 147.88 MWD+IFR2+MS+sag(2) 1,441.64 19.76 282.84 1,422.08 1,365.88 46.02 -178.05 6,031,107.91 469,653.20 3.51 161.56 MWD+IFR2+MS+sag(2) 1,489.48 21.66 283.06 1,466.82 1,410.62 49.81 -194.53 6,031,111.77 469,636.73 3.97 176.63 MWD+IFR2+MS+sag(2) 1,536.51 22.50 283.30 1,510.40 1,454.20 53.84 -211.75 6,031,115.87 469,619.53 1.80 192.35 MWD+IFR2+MS+sag(2) 1,631.93 22.94 283.24 1,598.42 1,542.22 62.30 -247.62 6,031,124.48 469,583.70 0.46 225.10 MWD+IFR2+MS+sag(2) 1,727.80 23.49 280.37 1,686.53 1,630.33 70.02 -284.60 6,031,132.34 469,546.76 1.31 259.10 MWD+IFR2+MS+sag(2) 1,822.79 24.21 279.79 1,773.41 1,717.21 76.74 -322.42 6,031,139.22 469,508.97 0.80 294.15 MWD+IFR2+MS+sag(2) 1,918.51 26.86 277.54 1,859.77 1,803.57 82.91 -363.20 6,031,145.56 469,468.21 2.95 332.22 MWD+IFR2+MS+sag(2) 2,012.15 27.92 271.27 1,942.93 1,886.73 86.18 -406.10 6,031,148.99 469,425.33 3.28 373.05 MWD+IFR2+MS+sag(2) I 2,107.08 29.08 267.60 2,026.36 1,970.16 85.70 -451.37 6,031,148.70 469,380.06 2.21 417.08 MWD+IFR2+MS+sag(2) 2,202.50 29.65 265.60 2,109.52 2,053.32 82.92 -498.08 6,031,146.11 469,333.35 1.19 463.06 MWD+IFR2+MS+sag(2) 2,297.72 33.10 260.49 2,190.82 2,134.62 76.81 -547.23 6,031,140.21 469,284.19 4.57 512.23 MWD+IFR2+MS+sag(2) 2,393.34 38.29 255.72 2,268.47 2,212.27 65.18 -601.73 6,031,128.80 469,229.64 6.16 567.93 MWD+IFR2+MS+sag(2) 2,487.32 42.41 249.91 2,340.10 2,283.90 47.10 -659.76 6,031,110.95 469,171.54 5.93 628.61 MWD+IFR2+MS+sag(2) i 2,583.64 44.65 246.58 2,409.94 2,353.74 22.49 -721.34 6,031,086.59 469,109.87 3.33 694.32 MWD+IFR2+MS+sag(2) 2,679.10 44.34 243.31 2,478.04 2,421.84 -5.83 -781.93 6,031,058.52 469,049.17 2.42 759.97 MWD+IFR2+MS+sag(2) 2,774.32 47.25 240.34 2,544.43 2,488.23 -38.09 -842.06 6,031,026.51 468,988.92 3.79 826.13 MWD+IFR2+MS+sag(2) 2,869.29 48.19 240.55 2,608.32 2,552.12 -72.75 -903.18 6,030,992.10 468,927.66 1.00 893.84 MWD+IFR2+MS+sag(2) 2,964.74 49.87 239.83 2,670.90 2,614.70 -108.58 -965.71 6,030,956.53 468,864.99 1.85 963.19 MWD+IFR2+MS+sag(2) I 3,059.01 52.69 240.26 2,729.86 2,673.66 -145.30 -1,029.43 6,030,920.08 468,801.13 3.01 1,033.92 MWD+IFR2+MS+sag(2) 3,153.58 55.92 239.93 2,785.04 2,728.84 -183.59 -1,096.00 6,030,882.06 468,734.42 3.43 1,107.79 MWD+IFR2+MS+sag(2) 3,249.36 59.06 240.40 2,836.51 2,780.31 -223.76 -1,166.06 6,030,842.18 468,664.20 3.30 1,185.50 MWD+IFR2+MS+sag(2) 7/27/2010 2:55:12PM Page 3 COMPASS 2003.16 Build 92B Halliburton Company Definitive Survey Report Company: Well Planning Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN1 3 Database: .Pioneer Alaska Survey Map Map Vertical MD Inc Azi TVD TVDSS +N/-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°/100') (ft) Survey Tool Name - 3,343.87 60.83 240.49 2,883.84 2,827.64 -264.11 1,237.21 6,030,802.12 468,592.89 1.87 1,264.32 MWD+IFR2+MS+sag(2) 3,439.02 63.71 240.05 2,928.11 2,871.91 -305.88 -1,310.34 6,030,760.66 468,519.60 3.05 1,345.40 MWD+IFR2+MS+sag(2) 3,537.45 65.99 240.68 2,969.94 2,913.74 -349.92 -1,387.78 6,030,716.93 468,441.99 2.39 1,431.21 MWD+IFR2+MS+sag(2) 3,655.38 66.89 241.45 3,017.07 2,960.87 -402.22 -1,482.38 6,030,665.02 468,347.18 0.97 1,535.68 MWD+IFR2+MS+sag(3) 3,750.54 66.27 240.80 3,054.90 2,998.70 -444.39 -1,558.85 6,030,623.17 468,270.56 0.90 1,620.09 MWD+IFR2+MS+sag(3) 3,848.74 63.88 241.13 3,096.28 3,040.08 -487.61 -1,636.70 6,030,580.27 468,192.54 2.45 1,706.11 MWD+IFR2+MS+sag(3) 3,939.95 62.68 240.80 3,137.29 3,081.09 -527.15 -1,707.93 6,030,541.02 468,121.15 1.35 1,784.80 MWD+IFR2+MS+sag(3) 4,035.58 61.68 240.84 3,181.92 3,125.72 -568.38 -1,781.78 6,030,500.09 468,047.15 1.05 1,866.45 MWD+IFR2+MS+sag(3) 4,130.29 59.77 240.96 3,228.23 3,172.03 -608.56 -1,853.96 6,030,460.21 467,974.81 2.02 1,946.22 MWD+IFR2+MS+sag(3) 4,225.69 57.33 236.90 3,278.02 3,221.82 -650.51 -1,923.66 6,030,418.55 467,904.95 4.44 2,024.02 MWD+IFR2+MS+sag(3) 4,273.68 57.30 236.98 3,303.93 3,247.73 -672.55 -1,957.51 6,030,396.65 467,871.01 0.15 2,062.21 MWD+IFR2+MS+sag(3) 4,321.17 58.02 240.04 3,329.34 3,273.14 -693.50 -1,991.72 6,030,375.84 467,836.72 5.65 2,100.48 MWD+IFR2+MS+sag(3) 4,416.19 59.08 242.89 3,378.93 3,322.73 -732.20 -2,062.93 6,030,337.43 467,765.37 2.79 2,178.95 MWD+IFR2+MS+sag(3) 4,511.79 59.14 244.53 3,428.01 3,371.81 -768.54 -2,136.48 6,030,301.40 467,691.68 1.47 2,259.12 MWD+IFR2+MS+sag(3) 4,609.03 57.85 245.14 3,478.82 3,422.62 -803.79 -2,211.51 6,030,266.45 467,616.51 1.43 2,340.47 MWD+IFR2+MS+sag(3) 4,703.61 56.93 245.47 3,529.79 3,473.59 -837.08 -2,283.90 6,030,233.46 467,544.00 1.02 2,418.76 MWD+IFR2+MS+sag(3) 4,797.84 57.02 246.71 3,581.15 3,524.95 -869.10 -2,356.12 6,030,201.74 467,471.65 1.11 2,496.60 MWD+IFR2+MS+sag(3) 4,892.37 58.12 247.66 3,631.84 3,575.64 -900.03 -2,429.66 6,030,171.11 467,397.99 1.44 2,575.45 MWD+IFR2+MS+sag(3) 4,988.58 60.05 249.52 3,681.27 3,625.07 -930.15 -2,506.50 6,030,141.31 467,321.03 2.60 2,657.30 MWD+IFR2+MS+sag(3) 5,082.57 62.89 248.01 3,726.16 3,669.96 -960.07 -2,583.46 6,030,111.70 467,243.97 3.33 2,739.22 MWD+IFR2+MS+sag(3) 5,178.62 66.26 245.43 3,767.40 3,711.20 -994.37 -2,663.11 6,030,077.73 467,164.18 4.27 2,824.81 MWD+IFR2+MS+sag(3) 5,273.64 69.12 242.69 3,803.47 3,747.27 -1,032.83 -2,742.13 6,030,039.59 467,085.01 4.02 2,910.81 MWD+IFR2+MS+sag(3) I 5,369.40 70.56 238.46 3,836.49 3,780.29 -1,076.99 -2,820.40 6,029,995.75 467,006.58 4.41 2,997.45 MWD+IFR2+MS+sag(3) 5,466.06 72.06 238.73 3,867.46 3,811.26 -1,124.70 -2,898.55 6,029,948.36 466,928.24 1.57 3,084.84 MWD+IFR2+MS+sag(3) 5,560.17 72.18 239.23 3,896.36 3,840.16 -1,170.86 -2,975.30 6,029,902.52 466,851.31 0.52 3,170.50 MWD+IFR2+MS+sag(3) 5,654.42 72.40 238.80 3,925.03 3,868.83 -1,217.08 -3,052.27 6,029,856.62 466,774.16 0.49 3,256.39 MWD+IFR2+MS+sag(3) 5,749.74 72.51 239.11 3,953.76 3,897.56 -1,263.95 -3,130.14 6,029,810.07 466,696.11 0.33 3,343.30 MWD+IFR2+MS+sag(3) 5,844.90 71.98 238.98 3,982.78 3,926.58 -1,310.57 -3,207.86 6,029,763.78 466,618.21 0.57 3,430.01 MWD+IFR2+MS+sag(3) 5,941.02 72.00 241.13 4,012.50 3,956.30 -1,356.19 -3,287.06 6,029,718.48 466,538.83 2.13 3,517.92 MWD+IFR2+MS+sag(3) 6,035.60 72.49 241.32 4,041.34 3,985.14 -1,399.55 -3,366.02 6,029,675.44 466,459.71 0.55 3,605.03 MWD+IFR2+MS+sag(3) 6,130.34 72.14 241.97 4,070.12 4,013.92 -1,442.42 -3,445.45 6,029,632.90 466,380.12 0.75 3,692.50 MWD+IFR2+MS+sag(3) 6,225.81 71.89 242.69 4,099.60 4,043.40 -1,484.59 -3,525.87 6,029,591.06 466,299.53 0.76 3,780.74 MWD+IFR2+MS+sag(3) 6,321.79 72.07 239.78 4,129.30 4,073.10 -1,528.50 -3,605.87 6,029,547.48 466,219.37 2.89 3,869.01 MWD+IFR2+MS+sag(3) 6,415.89 71.89 238.41 4,158.41 4,102.21 -1,574.46 -3,682.64 6,029,501.83 466,142.41 1.40 3,954.64 MWD+IFR2+MS+sag(3) 6,511.86 72.12 237.37 4,188.06 4,131.86 -1,622.98 -3,759.95 6,029,453.64 466,064.91 1.06 4,041.42 MWD+IFR2+MS+sag(3) 6,608.39 72.02 237.64 4,217.78 4,161.58 -1,672.32 -3,837.42 6,029,404.62 465,987.26 0.29 4,128.54 MWD+IFR2+MS+sag(3) 6,702.68 71.56 237.62 4,247.24 4,191.04 -1,720.27 -3,913.07 6,029,356.97 465,911.42 0.49 4,213.56 MWD+IFR2+MS+sag(3) 6,797.54 71.67 237.80 4,277.16 4,220.96 -1,768.36 -3,989.16 6,029,309.20 465,835.14 0.21 4,299.06 MWD+IFR2+MS+sag(3) 6,892.41 71.98 237.49 4,306.75 4,250.55 -1,816.60 -4,065.31 6,029,261.28 465,758.81 0.45 4,384.63 MWD+IFR2+MS+sag(3) 6,989.68 71.16 238.89 4,337.51 4,281.31 -1,865.24 -4,143.72 6,029,212.96 465,680.20 1.60 4,472.51 MWD+IFR2+MS+sag(3) 7/27/2010 2:55:12PM Page 4 COMPASS 2003.16 Budd 42B Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: Pioneer Alaska Survey Map Map Vertical MD Inc Azi TVD TVDSS +N1-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°l100') (ft) Survey Tool Name 7,083.92 71.13 241.11 4,367.97 4,311.77 -1,909.83 -4,220.95 6,029,168.69 465,602.80 2.23 4,558.25 MWD+IFR2+MS+sag(3) 7,177.83 71.53 242.56 4,398.03 4,341.83 -1,951.82 -4,299.38 6,029,127.02 465,524.21 1.52 4,644.52 MWD+IFR2+MS+sag(3) 7,272.54 71.30 243.15 4,428.21 4,372.01 -1,992.78 -4,379.27 6,029,086.39 465,444.17 0.64 4,731.96 MWD+IFR2+MS+sag(3) 7,368.80 70.98 244.21 4,459.33 4,403.13 -2,033.17 -4,460.91 6,029,046.34 465,362.36 1.09 4,820.97 MWD+IFR2+MS+sag(3) 7,464.11 71.06 244.91 4,490.33 4,434.13 -2,071.88 -4,542.30 6,029,007.96 465,280.83 0.70 4,909.32 MWD+IFR2+MS+sag(3) I 7,558.96 70.81 245.68 4,521.31 4,465.11 -2,109.35 -4,623.74 6,028,970.82 465,199.24 0.81 4,997.42 MWD+IFR2+MS+sag(3) 7,654.55 69.23 243.41 4,553.98 4,497.78 -2,147.95 -4,704.85 6,028,932.56 465,117.99 2.78 5,085.47 MWD+IFR2+MS+sag(3) 7,749.02 68.38 243.48 4,588.13 4,531.93 -2,187.33 -4,783.64 6,028,893.50 465,039.05 0.90 5,171.46 MWD+IFR2+MS+sag(3) 7,844.97 67.01 244.56 4,624.55 4,568.35 -2,226.22 -4,863.43 6,028,854.94 464,959.10 1.77 5,258.30 MWD+IFR2+MS+sag(3) 7,940.32 66.43 244.19 4,662.23 4,606.03 -2,264.09 -4,942.41 6,028,817.39 464,879.99 0.71 5,344.11 MWD+IFR2+MS+sag(3) 8,036.80 66.82 243.65 4,700.51 4,644.31 -2,303.03 -5,021.95 6,028,778.78 464,800.29 0.65 5,430.72 MWD+IFR2+MS+sag(3) 8,133.16 66.92 243.13 4,738.36 4,682.16 -2,342.72 -5,101.18 6,028,739.42 464,720.91 0.51 5,517.21 MWD+IFR2+MS+sag(3) 8,222.16 67.14 242.86 4,773.10 4,716.90 -2,379.93 -5,174.19 6,028,702.51 464,647.76 0.37 5,597.07 MWD+IFR2+MS+sag(3) 8,319.97 67.22 242.46 4,811.03 4,754.83 -2,421.33 -5,254.27 6,028,661.43 464,567.52 0.39 5,684.81 MWD+IFR2+MS+sag(3) 8,416.55 67.14 242.76 4,848.49 4,792.29 -2,462.29 -5,333.31 6,028,620.81 464,488.32 0.30 5,771.42 MWD+IFR2+MS+sag(3) 8,511.37 67.80 243.75 4,884.82 4,828.62 -2,501.70 -5,411.52 6,028,581.72 464,409.96 1.19 5,856.86 MWD+IFR2+MS+sag(3) 8,604.66 67.88 244.29 4,920.01 4,863.81 -2,539.55 -5,489.19 6,028,544.19 464,332.14 0.54 5,941.39 MWD+IFR2+MS+sag(3) 8,702.64 67.51 244.46 4,957.20 4,901.00 -2,578.75 -5,570.92 6,028,505.32 464,250.26 0.41 6,030.20 MWD+IFR2+MS+sag(3) 8,796.40 67.74 243.44 4,992.89 4,936.69 -2,616.82 -5,648.81 6,028,467.57 464,172.22 1.04 6,115.00 MWD+IFR2+MS+sag(3) 8,893.58 67.67 242.62 5,029.76 4,973.56 -2,657.60 -5,728.95 6,028,427.12 464,091.93 0.78 6,202.64 MWD+IFR2+MS+sag(3) 8,986.13 67.27 242.51 5,065.22 5,009.02 -2,696.99 -5,804.82 6,028,388.04 464,015.91 0.45 6,285.80 MWD+IFR2+MS+sag(3) 9,081.69 67.22 242.57 5,102.18 5,045.98 -2,737.63 -5,883.02 6,028,347.73 463,937.56 0.08 6,371.52 MWD+IFR2+MS+sag(3) 9,179.21 67.29 243.50 5,139.89 5,083.69 -2,778.41 -5,963.17 6,028,307.28 463,857.24 0.88 6,459.17 MWD+IFR2+MS+sag(3) 9,271.78 66.93 243.43 5,175.89 5,119.69 -2,816.50 -6,039.47 6,028,269.49 463,780.80 0.40 6,542.44 MWD+IFR2+MS+sag(3) 9,368.67 66.59 244.26 5,214.12 5,157.92 -2,855.75 -6,119.38 6,028,230.58 463,700.74 0.86 6,629.48 MWD+IFR2+MS+sag(3) 9,439.50 66.81 244.40 5,242.14 5,185.94 -2,883.93 -6,178.01 6,028,202.64 463,642.00 0.36 6,693.20 MWD+IFR2+MS+sag(3) 9,471.18 67.96 244.16 5,254.32 5,198.12 -2,896.62 -6,204.36 6,028,190.05 463,615.60 3.70 6,721.84 MWD+IFR2+MS+sag(4) 9,502.29 68.29 244.69 5,265.91 5,209.71 -2,909.08 -6,230.40 6,028,177.70 463,589.51 1.90 6,750.13 MWD+IFR2+MS+sag(4) 9,566.03 67.84 244.44 5,289.72 5,233.52 -2,934.48 -6,283.80 6,028,152.53 463,536.02 0.79 6,808.09 MWD+IFR2+MS+sag(4) 9,661.56 67.28 244.28 5,326.19 5,269.99 -2,972.68 -6,363.40 6,028,114.65 463,456.27 0.61 6,894.58 MWD+IFR2+MS+sag(4) 9,756.58 67.02 243.85 5,363.09 5,306.89 -3,010.98 -6,442.14 6,028,076.67 463,377.38 0.50 6,980.27 MWD+IFR2+MS+sag(4) 9,852.68 66.81 243.27 5,400.77 5,344.57 -3,050.34 -6,521.30 6,028,037.64 463,298.07 0.60 7,066.61 MWD+IFR2+MS+sag(4) 9,942.29 67.08 243.02 5,435.86 5,379.66 -3,087.59 -6,594.86 6,028,000.69 463,224.37 0.40 7,147.01 MWD+IFR2+MS+sag(4) 10,042.58 67.21 242.07 5,474.81 5,418.61 -3,130.20 -6,676.87 6,027,958.42 463,142.20 0.88 7,236.90 MWD+IFR2+MS+sag(4) 10,138.41 66.89 242.70 5,512.18 5,455.98 -3,171.10 -6,755.06 6,027,917.84 463,063.85 0.69 7,322.68 MWD+IFR2+MS+sag(4) 10,233.41 66.69 243.47 5,549.62 5,493.42 -3,210.62 -6,832.91 6,027,878.64 462,985.85 0.77 7,407.80 MWD+IFR2+MS+sag(4) 10,328.04 67.68 246.37 5,586.32 5,530.12 -3,247.58 -6,911.90 6,027,842.00 462,906.71 3.01 7,493.40 MWD+IFR2+MS+sag(4) 10,423.19 67.88 249.50 5,622.31 5,566.11 -3,280.67 -6,993.52 6,027,809.25 462,824.97 3.05 7,580.61 MWD+IFR2+MS+sag(4) 10,518.38 68.73 253.09 5,657.51 5,601.31 -3,309.02 -7,077.28 6,027,781.24 462,741.10 3.62 7,668.75 MWD+IFR2+MS+sag(4) 10,613.81 69.47 255.80 5,691.56 5,635.36 -3,332.92 -7,163.16 6,027,757.70 462,655.14 2.76 7,757.86 MWD+IFR2+MS+sag(4) 7/27/2010 2:55:12PM Page 5 COMPASS 2003.16 Build 428 Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey 1-', Map Map Vertical MD Inc Azi ND TVDSS +N/-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°/100') (ft) Survey Tool Name 10,708.95 69.75 258.66 5,724.71 5,668.51 -3,352.62 -7,250.12 6,027,738.34 462,568.10 2.83 7,847.00 MWD+IFR2+MS+sag(4) 10,762.07 70.33 260.54 5,742.85 5,686.65 -3,361.63 -7,299.23 6,027,729.53 462,518.97 3.50 7,896.83 MWD+IFR2+MS+sag(4) 10,805.45 70.02 262.71 5,757.56 5,701.36 -3,367.58 -7,339.60 6,027,723.75 462,478.58 4.76 7,937.43 MWD+IFR2+MS+sag(4) 10,856.22 69.74 264.72 5,775.03 5,718.83 -3,372.80 -7,386.98 6,027,718.73 462,431.18 3.76 7,984.67 MWD+IFR2+MS+sag(4) 10,899.97 70.00 267.12 5,790.08 5,733.88 -3,375.72 -7,427.95 6,027,715.97 462,390.20 5.18 8,025.12 MWD+IFR2+MS+sag(4) 10,948.40 70.21 269.36 5,806.57 5,750.37 -3,377.12 -7,473.47 6,027,714.76 462,344.69 4.37 8,069.61 MWD+IFR2+MS+sag(4) 10,995.58 70.84 271.78 5,822.30 5,766.10 -3,376.67 -7,517.94 6,027,715.38 462,300.22 5.02 8,112.65 MWD+IFR2+MS+sag(4) 11,047.52 71.17 274.24 5,839.21 5,783.01 -3,374.09 -7,566.98 6,027,718.16 462,251.19 4.52 8,159.60 MWD+IFR2+MS+sag(4) 11,090.64 71.32 276.05 5,853.07 5,796.87 -3,370.43 -7,607.64 6,027,721.99 462,210.55 3.99 8,198.16 MWD+IFR2+MS+sag(4) 11,185.07 72.15 279.66 5,882.68 5,826.48 -3,358.17 -7,696.46 6,027,734.61 462,121.80 3.74 8,281.34 MWD+IFR2+MS+sag(4) 11,280.50 73.47 281.77 5,910.88 5,854.68 -3,341.22 -7,786.02 6,027,751.92 462,032.31 2.52 8,364.12 MWD+IFR2+MS+sag(4) 11,375.95 74.24 285.64 5,937.43 5,881.23 -3,319.50 -7,875.08 6,027,774.01 461,943.35 3.98 8,445.24 MWD+IFR2+MS+sag(4) 11,470.11 74.80 289.46 5,962.57 5,906.37 -3,292.13 -7,961.58 6,027,801.71 461,856.97 3.95 8,522.51 MWD+IFR2+MS+sag(4) 11,565.65 75.82 293.05 5,986.81 5,930.61 -3,258.63 -8,047.69 6,027,835.56 461,771.01 3.79 8,597.92 MWD+IFR2+MS+sag(4) 11,660.17 77.28 295.94 6,008.80 5,952.60 -3,220.52 -8,131.33 6,027,874.01 461,687.53 3.35 8,669.81 MWD+IFR2+MS+sag(4) 11,755.53 78.30 297.81 6,028.97 5,972.77 -3,178.38 -8,214.46 6,027,916.48 461,604.58 2.19 8,740.23 MWD+IFR2+MS+sag(4) 11,850.87 78.98 300.61 6,047.75 5,991.55 -3,132.77 -8,296.03 6,027,962.42 461,523.20 2.97 8,808.29 MWD+IFR2+MS+sag(4) 11,946.39 79.99 304.59 6,065.19 6,008.99 -3,082.18 -8,375.13 6,028,013.32 461,444.31 4.23 8,872.75 MWD+IFR2+MS+sag(4) 12,041.33 79.74 306.83 6,081.90 6,025.70 -3,027.63 -8,451.01 6,028,068.17 461,368.66 2.34 8,933.13 MWD+IFR2+MS+sag(4) 12,138.17 80.56 307.63 6,098.46 6,042.26 -2,969.91 -8,526.98 6,028,126.20 461,292.94 1.17 8,992.81 MWD+IFR2+MS+sag(4) 12,232.32 80.55 308.23 6,113.91 6,057.71 -2,912.82 -8,600.24 6,028,183.58 461,219.92 0.63 9,050.02 MWD+IFR2+MS+sag(4) 12,326.90 80.68 309.04 6,129.34 6,073.14 -2,854.56 -8,673.13 6,028,242.13 461,147.28 0.86 9,106.60 MWD+IFR2+MS+sag(4) 12,422.42 80.24 309.00 6,145.17 6,088.97 -2,795.25 -8,746.31 6,028,301.73 461,074.34 0.46 9,163.20 MWD+IFR2+MS+sag(4) 12,516.62 80.11 308.90 6,161.24 6,105.04 -2,736.90 -8,818.50 6,028,360.36 461,002.40 0.17 9,219.07 MWD+IFR2+MS+sag(4) I 12,611.94 80.00 309.32 6,177.70 6,121.50 -2,677.68 -8,891.35 6,028,419.88 460,929.80 0.45 9,275.37 MWD+IFR2+MS+sag(4) 12,637.91 80.30 309.76 6,182.15 6,125.95 -2,661.39 -8,911.08 6,028,436.25 460,910.13 2.03 9,290.56 MWD+IFR2+MS+sag(4) 12,682.19 81.08 310.42 6,189.31 6,133.11 -2,633.25 -8,944.51 6,028,464.52 460,876.82 2.29 9,316.16 MWD+IFR2+MS+sag(5) 12,761.00 82.35 312.79 6,200.67 6,144.47 -2,581.47 -9,002.82 6,028,516.53 460,818.73 3.38 9,360.16 MWD+IFR2+MS+sag(5) 12,788.92 80.81 312.52 6,204.76 6,148.56 -2,562.76 -9,023.13 6,028,535.32 460,798.50 5.59 9,375.32 MWD+IFR2+MS+sag(6) 12,853.68 82.99 311.89 6,213.88 6,157.68 -2,519.69 -9,070.62 6,028,578.58 460,751.19 3.50 9,410.94 MWD+IFR2+MS+sag(6) 12,949.82 88.81 310.96 6,220.75 6,164.55 -2,456.27 -9,142.49 6,028,642.28 460,679.58 6.13 9,465.28 MWD+IFR2+MS+sag(6) 13,046.65 91.41 310.04 6,220.57 6,164.37 -2,393.39 -9,216.11 6,028,705.45 460,606.22 2.85 9,521.44 MWD+IFR2+MS+sag(6) 13,097.82 93.14 309.58 6,218.54 6,162.34 -2,360.66 -9,255.39 6,028,738.34 460,567.08 3.50 9,551.59 MWD+IFR2+MS+sag(6) 13,141.43 93.70 309.02 6,215.93 6,159.73 -2,333.08 -9,289.07 6,028,766.05 460,533.51 1.81 9,577.58 MWD+IFR2+MS+sag(6) 13,236.96 91.47 307.33 6,211.63 6,155.43 -2,274.11 -9,364.09 6,028,825.32 460,458.74 2.93 9,636.04 MWD+IFR2+MS+sag(6) 13,333.83 92.65 307.90 6,208.14 6,151.94 -2,215.02 -9,440.77 6,028,884.71 460,382.31 1.35 9,696.10 MWD+IFR2+MS+sag(6) 13,430.23 91.10 307.05 6,204.99 6,148.79 -2,156.40 -9,517.23 6,028,943.63 460,306.09 1.83 9,756.05 MWD+IFR2+MS+sag(6) 13,527.00 91.47 307.55 6,202.82 6,146.62 -2,097.78 -9,594.19 6,029,002.57 460,229.38 0.64 9,816.48 MWD+IFR2+MS+sag(6) I I 13,623.80 92.59 309.28 6,199.39 6,143.19 -2,037.67 -9,669.99 6,029,062.97 460,153.84 2.13 9,875.42 MWD+IFR2+MS+sag(6) 13,718.95 90.42 308.99 6,196.89 6,140.69 -1,977.64 -9,743.76 6,029,123.29 460,080.32 2.30 9,932.42 MWD+IFR2+MS+sag(6) 7/27/2010 2:55:1 2PM Page 6 COMPASS 2003.16 Build 428 Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey Map Map Vertical MD Inc Azi TVD TVDSS +N/-S +El-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°1100') (ft) Survey Tool Name 13,816.34 90.84 309.97 6,195.82 6,139.62 -1,915.73 -9,818.93 6,029,185.51 460,005.41 1.09 9,990.31 MWD+IFR2+MS+sag(6) 13,913.96 90.11 308.96 6,195.01 6,138.81 -1,853,68 -9,894.29 6,029,247.85 459,930.31 1.28 10,048.36 MWD+IFR2+MS+sag(6) 14,010.58 88.57 308.23 6,196.12 6,139.92 -1,793.42 -9,969.79 6,029,308.42 459,855.06 1.76 10,106.99 MWD+IFR2+MS+sag(6) 14,106.63 87.51 310.40 6,199.41 6,143.21 -1,732.60 -10,044.06 6,029,369.53 459,781.05 2.51 10,164.27 MWD+IFR2+MS+sag(6) 14,202.70 88.88 312.24 6,202.44 6,146.24 -1,669.20 -10,116.17 6,029,433.21 459,709.20 2.39 10,218.84 MWD+IFR2+MS+sag(6) 14,299.84 89.68 313.41 6,203.66 6,147.46 -1,603.18 -10,187.41 6,029,499.52 459,638.24 1.46 10,271.93 MWD+IFR2+MS+sag(6) 14,396.42 90.11 313.71 6,203.83 6,147.63 -1,536.62 -10,257.39 6,029,566.35 459,568.53 0.54 10,323.67 MWD+IFR2+MS+sag(6) 14,491.62 90.92 314.28 6,202.98 6,146.78 -1,470.50 -10,325.88 6,029,632.74 459,500.33 1.04 10,374.06 MWD+IFR2+MS+sag(6) 14,588.63 91.84 315.05 6,200.64 6,144.44 -1,402.33 -10,394.85 6,029,701.19 459,431.63 1.24 10,424.43 MWD+IFR2+MS+sag(6) 14,684.64 89.25 313.14 6,199.73 6,143.53 -1,335.53 -10,463.79 6,029,768.26 459,362.97 3.35 10,475.10 MWD+IFR2+MS+sag(6) 14,779.99 88.32 312.33 6,201.75 6,145.55 -1,270.84 -10,533.81 6,029,833.22 459,293.22 1.29 10,527.32 MWD+IFR2+MS+sag(6) 14,876.99 88.69 312.44 6,204.28 6,148.08 -1,205.48 -10,605.43 6,029,898.87 459,221.87 0.40 10,580.94 MWD+IFR2+MS+sag(6) 14,972.55 87.76 313.29 6,207.24 6,151.04 -1,140.50 -10,675.44 6,029,964.12 459,152.14 1.32 10,633.09 MWD+IFR2+MS+sag(6) 15,069.22 88.45 313.82 6,210.44 6,154.24 -1,073.93 -10,745.46 6,030,030.97 459,082.40 0.90 10,684.86 MWD+IFR2+MS+sag(6) 15,165.46 92.59 314.41 6,209.56 6,153.36 -1,006.95 -10,814.53 6,030,098.22 459,013.60 4.35 10,735.62 MWD+IFR2+MS+sag(6) 15,261.76 93.27 314.14 6,204.64 6,148.44 -939.82 -10,883.39 6,030,165.63 458,945.02 0.76 10,786.13 MWD+IFR2+MS+sag(6) 15,357.78 93.76 313.29 6,198.75 6,142.55 -873.58 -10,952.66 6,030,232.14 458,876.03 1.02 10,837.25 MWD+IFR2+MS+sag(6) 15,454.81 90.48 313.60 6,195.17 6,138.97 -806.92 -11,023.05 6,030,299.09 458,805.92 3.40 10,889.36 MWD+IFR2+MS+sag(6) 15,552.05 92.09 314.71 6,192.98 6,136.78 -739.20 -11,092.80 6,030,367.08 458,736.45 2.01 10,940.59 MWD+IFR2+MS+sag(6) 15,647.58 92.77 313.79 6,188.93 6,132.73 -672.60 -11,161.16 6,030,433.95 458,668.37 1.20 10,990.74 MWD+IFR2+MS+sag(6) 15,743.49 92.21 314.03 6,184.77 6,128.57 -606.15 -11,230.19 6,030,500.67 458,599.61 0.64 11,041.59 MWD+IFR2+MS+sag(6) 15,840.28 91.35 314.34 6,181.76 6,125.56 -538.72 -11,299.57 6,030,568.38 458,530.52 0.94 11,092.52 MWD+IFR2+MS+sag(6) 15,935.77 91.66 315.24 6,179.25 6,123.05 -471.47 -11,367.31 6,030,635.89 458,463.06 1.00 11,141.92 MWD+IFR2+MS+sag(6) 16,034.54 90.92 316.27 6,177.03 6,120.83 -400.73 -11,436.21 6,030,706.90 458,394.45 1.28 11,191.59 MWD+IFR2+MS+sag(6) 16,128.49 88.81 315.72 6,177.25 6,121.05 -333.16 -11,501.47 6,030,774.73 458,329.47 2.32 11,238.51 MWD+IFR2+MS+sag(6) 16,227.34 89.74 315.34 6,178.50 6,122.30 -262.63 -11,570.71 6,030,845.54 458,260.52 1.02 11,288.56 MWD+IFR2+MS+sag(6) 16,322.80 90.30 316.78 6,178.47 6,122.27 -193.89 -11,636.95 6,030,914.53 458,194.57 1.62 11,336.14 MWD+IFR2+MS+sag(6) 16,418.59 88.75 316.33 6,179.26 6,123.06 -124.35 -11,702.82 6,030,984.34 458,128.99 1.68 11,383.16 MWD+IFR2+MS+sag(6) 16,515.45 90.16 316.95 6,180.18 6,123.98 -53.93 -11,769.32 6,031,055.02 458,062.79 1.59 11,430.58 MWD+IFR2+MS+sag(6) 16,611.58 89.31 316.59 6,180.63 6,124.43 16.11 -11,835.16 6,031,125.31 457,997.24 0.96 11,477.46 MWD+IFR2+MS+sag(6) 16,708.10 88.88 312.30 6,182.15 6,125.95 83.67 -11,904.04 6,031,193.15 457,928.64 4.47 11,527.88 MWD+IFR2+MS+sag(6) 16,804.64 89.37 311.67 6,183.63 6,127.43 148.24 -11,975.79 6,031,258.00 457,857.16 0.83 11,581.82 MWD+IFR2+MS+sag(6) 16,830.27 89.93 315.99 6,183.78 6,127.58 165.98 -11,994.28 6,031,275.82 457,838.75 17.00 11,595.45 MWD+IFR2+MS+sag(6) 16,857.83 89.99 316.63 6,183.80 6,127.60 185.91 -12,013.31 6,031,295.82 457,819.79 2.33 11,609.08 MWD+IFR2+MS+sag(6) 16,901.51 90.11 319.03 6,183.77 6,127.57 218.28 -12,042.63 6,031,328.31 457,790.61 5.50 11,629.67 MWD+IFR2+MS+sag(6) 16,964.95 90.05 320.47 6,183.68 6,127.48 266.70 -12,083.62 6,031,376.89 457,749.82 2.27 11,657.68 MWD+IFR2+MS+sag(6) 16,996.79 89.43 321.24 6,183.82 6,127.62 291.40 -12,103.72 6,031,401.66 457,729.82 3.10 11,671.19 MWD+IFR2+MS+sag(6) 17,092.96 88.94 319.05 6,185.19 6,128.99 365.21 -12,165.34 6,031,475.72 457,668.51 2.33 11,713.05 MWD+IFR2+MS+sag(6) 17,190.32 90.42 316.53 6,185.73 6,129.53 437.31 -12,230.75 6,031,548.08 457,603.40 3.00 11,759.00 MWD+IFR2+MS+sag(6) 17,288.02 91.97 314.64 6,183.70 6,127.50 507.08 -12,299.10 6,031,618.12 457,535.34 2.50 11,808.38 MWD+IFR2+MS+sag(6) 7/27/2010 2:55:12PM Page 7 COMPASS 2003.16 Build 428 Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Welibore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey _ %if - � , Map Map Vertical MD Inc Azi ND TVDSS +N/-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°1100') „(ft) Survey Tool Name 17,384.55 92.03 311.46 6,180.33 6,124.13 572.93 -12,369.59 6,031,684.24 457,465.13 3.29 11,860.78 MWD+IFR2+MS+sag(6) 17,480.19 91.10 311.43 6,177.71 6,121.51 636.21 -12,441.25 6,031,747.81 457,393.73 0.97 11,914.95 MWD+IFR2+MS+sag(6) 17,577.59 92.21 311.46 6,174.90 6,118.70 700.65 -12,514.23 6,031,812.54 457,321.02 1.14 11,970.11 MWD+IFR2+MS+sag(6) 17,672.72 91.16 310.14 6,172.10 6,115.90 762.78 -12,586.21 6,031,874.95 457,249.30 1.77 12,024.86 MWD+IFR2+MS+sag(6) 17,769.06 90.61 310.43 6,170.62 6,114.42 825.06 -12,659.69 6,031,937.53 457,176.08 0.65 12,081.03 MWD+IFR2+MS+sag(6) 17,865.60 89.68 310.04 6,170.37 6,114.17 887.42 -12,733.39 6,032,000.18 457,102.64 1.04 12,137.39 MWD+IFR2+MS+sag(6) 17,962.97 90.36 309.73 6,170.34 6,114.14 949.86 -12,808.11 6,032,062.91 457,028.19 0.77 12,194.72 MWD+IFR2+MS+sag(6) 18,057.82 90.48 306.61 6,169.64 6,113.44 1,008.47 -12,882.66 6,032,121.82 456,953.88 3.29 12,252.82 MWD+IFR2+MS+sag(6) 18,155.74 90.36 305.53 6,168.92 6,112.72 1,066.12 -12,961.81 6,032,179.78 456,874.97 1.11 12,315.61 MWD+IFR2+MS+sag(6) 18,252.27 93.52 307.71 6,165.66 6,109.46 1,123.65 -13,039.23 6,032,237.62 456,797.80 3.98 12,376.75 MWD+IFR2+MS+sag(6) 18,348.05 90.11 308.74 6,162.62 6,106.42 1,182.88 -13,114.42 6,032,297.15 456,722.85 3.72 12,435.33 MWD+IFR2+MS+sag(6) 18,444.35 88.82 310.58 6,163.52 6,107.32 1,244.33 -13,188.55 6,032,358.90 456,648.98 2.33 12,492.33 MWD+IFR2+MS+sag(6) 18,534.46 89.25 312.84 6,165.04 6,108.84 1,304.27 -13,255.80 6,032,419.11 456,581.98 2.55 12,543.02 MWD+IFR2+MS+sag(6) 18,635.29 88.01 316.58 6,167.45 6,111.25 1,375.18 -13,327.43 6,032,490.29 456,510.65 3.91 12,595.30 MWD+IFR2+MS+sag(6) 18,733.88 89.87 319.25 6,169.28 6,113.08 1,448.32 -13,393.48 6,032,563.70 456,444.90 3.30 12,641.63 MWD+IFR2+MS+sag(6) 18,830.69 90.05 320.88 6,169.34 6,113.14 1,522.55 -13,455.63 6,032,638.17 456,383.06 1.69 12,683.90 MWD+IFR2+MS+sag(6) 18,924.34 88.75 316.99 6,170.32 6,114.12 1,593.14 -13,517.13 6,032,709.00 456,321.85 4.38 12,726.44 MWD+IFR2+MS+sag(6) 19,023.94 89.80 314.55 6,171.58 6,115.38 1,664.50 -13,586.59 6,032,780.63 456,252.69 2.67 12,776.51 MWD+IFR2+MS+sag(6) 19,119.03 88.94 314.71 6,172.63 6,116.43 1,731.30 -13,654.26 6,032,847.70 456,185.30 0.92 12,825.94 MWD+IFR2+MS+sag(6) 19,213.45 88.44 314.75 6,174.79 6,118.59 1,797.73 -13,721.32 6,032,914.39 456,118.51 0.53 12,874.87 MWD+IFR2+MS+sag(6) 19,247.26 90.11 315.94 6,175.22 6,119.02 1,821.78 -13,745.08 6,032,938.54 456,094.85 6.06 12,892.09 MWD+IFR2+MS+sag(6) 19,279.84 91.60 318.03 6,174.73 6,118.53 1,845.59 -13,767.30 6,032,962.44 456,072.73 7.88 12,907.87 MWD+IFR2+MS+sag(6) 19,312.21 89.68 317.22 6,174.37 6,118.17 1,869.50 -13,789.12 6,032,986.44 456,051.02 6.44 12,923.22 MWD+IFR2+MS+sag(6) 19,408.84 90.73 317.07 6,174.02 6,117.82 1,940.34 -13,854.84 6,033,057.53 455,985.59 1.10 12,969.79 MWD+IFR2+MS+sag(6) 19,439.81 90.36 314.65 6,173.73 6,117.53 1,962.56 -13,876.40 6,033,079.84 455,964.12 7.90 12,985.32 MWD+IFR2+MS+sag(6) 19,472.21 90.61 310.48 6,173.45 6,117.25 1,984.47 -13,900.26 6,033,101.84 455,940.35 12.89 13,003.15 MWD+IFR2+MS+sag(6) 19,505.61 91.60 308.33 6,172.81 6,116.61 2,005.67 -13,926.06 6,033,123.14 455,914.64 7.09 13,023.03 MWD+IFR2+MS+sag(6) 19,534.67 92.09 308.51 6,171.87 6,115.67 2,023.72 -13,948.82 6,033,141.28 455,891.96 1.80 13,040.73 MWD+IFR2+MS+sag(6) 19,598.34 91.29 309.00 6,170.00 6,113.80 2,063.56 -13,998.45 6,033,181.32 455,842.50 1.47 13,079.20 MWD+IFR2+MS+sag(6) 19,698.21 89.80 309.90 6,169.05 6,112.85 2,127.01 -14,075.56 6,033,245.08 455,765.65 1.74 13,138.61 MWD+IFR2+MS+sag(6) 19,795.14 90.92 312.61 6,168.44 6,112.24 2,190.92 -14,148.42 6,033,309.27 455,693.06 3.03 13,193.79 MWD+IFR2+MS+sag(6) 19,891.76 92.03 315.42 6,165.95 6,109.75 2,258.02 -14,217.87 6,033,376.66 455,623.88 3.13 13,244.88 MWD+IFR2+MS+sag(6) 19,987.59 92.71 315.55 6,161.99 6,105.79 2,326.30 -14,285.00 6,033,445.19 455,557.04 0.72 13,293.43 MWD+IFR2+MS+sag(6) 20,080.94 91.16 315.07 6,158.84 6,102.64 2,392.62 -14,350.61 6,033,511.78 455,491.71 1.74 13,340.98 MWD+IFR2+MS+sag(6) 20,178.91 92.71 316.09 6,155.53 6,099.33 2,462.55 -14,419.14 6,033,581.98 455,423.47 1.89 13,390.49 MWD+IFR2+MS+sag(6) I 20,276.19 95.13 315.63 6,148.88 6,092.68 2,532.20 -14,486.72 6,033,651.89 455,356.18 2.53 13,439.16 MWD+IFR2+MS+sag(6) 20,373.82 95.74 315.48 6,139.63 6,083.43 2,601.58 -14,554.78 6,033,721.54 455,288.41 0.64 13,488.34 MWD+IFR2+MS+sag(6) 20,468.57 94.50 315.79 6,131.17 6,074.97 2,669.05 -14,620.76 6,033,789.27 455,222.70 1.35 13,535.98 MWD+IFR2+MS+sag(6) 20,513.00 94.50 315.79 6,127.69 6,071.49 2,700.80 -14,651.65 6,033,821.14 455,191.95 0.00 13,558.24 PROJECTED to TD 7/27/2010 2:55:12PM Page 8 COMPASS 2003.16 Build 428 PIONEER Operations Summary Report NATURAL RESOURCES Well Name:ODSN-161 ODSN-16L1 Contractor:NABORS DRILLING Rig Number:19 AC Job Category:DEVELOPMENT DRILL Spud Date:5212010 Rig Release Date:8/12/2010 • • of sasf MW 6q Cale Sal Ng"1145,, Po234.13a1 la'ya Summa! 5212010 0.0 8.90 Completed Slickline work on ODSN-15i.Move to ODSN-16.Rig accepted on ODSN-15 tZ.05.01 tas on 0520;10.RU on ODSN-16.RU Gyro.PU 5'HWT and jars.Stand back.PU motor,bit and UBHO sub: orient same. 502212010 159.0 6672.00 9.10 Pre Spud w/all personnel involved-Clean out conductor to 139'.Spud&Drillf/1595219.Run Gyro, POOH.PU 14-1/T BHA it.Directional drill 1/1591/731'. 5,23/2010 731.0 1,333:00. 9.15 Directional Drill 14.1,2'-hole 11731'tt124n md.Service Rig and Top Drive.DirectonalDrill1/1243 5/1779"rod. 5/2412010 2.0640 951.00 9.30 Directional drill 92064'tf2350.POOH fl short trip&backream 172350'V1700'.Pull 15.512 stds wi elevators to 51500'.RIM&Directional drill(/2350'/3015'. 5252010 1015.0 585.00 9.30 Directional drill I/3015'tf3600/14-1/2'hole TD).Circ&condition forwiper trip.POOH fi'wiper trip t/21O'. Work thru tight spots.RIH 71210 1,'3600'.Circ hole clean-Pump H.V.nutp lug sweep. 6126+2010 3.6000 0.00 9.50 Ciro&conditionVcasingrum.900gpm.2SOOpsi.R&RDPw/B0rpmwl5ktq,75'strokes.POOHon elevators 8/3430'-Pulling 100k over.Carc&condition V casing run 900 gpm.2600psi.CBU X2 including calculated washout.Attempt to POOH on elevators-Pull to 100k over Backream out of hole 93600' t11300 wino issues.600 gpm,1300 psi.80 rpm w/7k to-ROW 125k.POOH on elevators 91300V BHA -LD same.Run 11-3/4`,608t,L-80 HYD 521 surface casino 52832'. 5.2712010 3.$00.0 0.00 9.50 Ran 11-3/4",604.L-80HYD 521 surface casing to a shoe depth of3589.Landed casing.Pump 10 bbls seawater,test lines 1/4000 psi.Release 1st bottom plug:kick out w/2 bbls spacer.Load top plug,pump 58 obis spacer-release 2nd bottom plug,Porno 457 bbls 1616 sxl 10.5ooa.4 15 yield.Type'L' Permafrost lead cement.porno 5E.5 bbls 1287 sx115 Song Premium"G'tail cement.Release top plug- kick oulwi20bbls seawater.Dispiaceusing rig pumps.9.4ppg spud mud 371 bbls 64 bbls cement returned to surface.CIP 10:00 hrs.Plug was bumped and casing was tested to 3500 psi for 30 charted minutes.RD casing and cement equipment.ND riser.NU POPE.RIH with 5'HLRT and jars. POOH laying down same. 5/28/2010 3;600.0 0.00 9.50 LD HVVT.and jars MU stack washer on bottom of DP&R1H 3147.Orsplacewell wt 9.4 ppg brine.PU 3 112"157 x 4 1/2"X0.MU Vetco tubng hanger.Land hanger vr/TVVC installed.RIMS.test upper&lower hanger seals to 5000 psi 1/10 charted min.each test.LD landing jt.NDBOPE.NU Tree. Test hanger void to 6000 psi V10 charted man Testtreeto250psitowaide Ysihlah9.6.10.each -tests charted.Clean pits,pipeshed inprep V rig move.Moverig off of ODSN-16and spot over OD34- 11 conductor. 6/1112010 3.600,0 0.00 9.50 Inactive 6/12/2010 3,600.0 0.00 9.50 Rig Accepted*00:00 hrs on 0611111 O.01394-18.RU testing equipment.TestAnnularto 250 psi low/ n n 2500 psi high with FOP.Test Upper and Lower 2-7/13-x 5 VBR's with 6`DP,Bend Rams.Choke and I,1)a 1 lfiil tine HCR's.Choke and Kill LineManual valves,Floor Safety valve,Dan valve.14 Cho Man itoid valves to 250 psi low/4600 psi high.All/ow and hightests held Smsnee.Alltests chatted. Troubleshoot electrical issues with top drive and repair SAM e.Finish rigging tiptop demRU testng equipment.Test Upper and Lower IBOPto25p psi low/4500 psi high held 5minea.Accumulatortest. • System Pressure 3000 psi.Atter Closure 2000 psi.Initial200 psi recovery 16 sec's,Full recovery 1 mm 38 sec's.All tests charted.Test witness waived by AOGCC rep JeflJones at 1820 hrs on 06/10/10.RD test equipment.Slip and cut drill line.Change out elevators to 3.5"tubing elevators and PU landing joint to pull hanger. • • • 6/13/2010 3.600.0 0.00 10.00 RU to pull hanaer and pull tubina hancier to ria floor LD hanger and change outhandling tools.POOH 73,147 1/surface.TIH picking up S'DP from pipe shed 1.3.400.Circulate 1-1/2 times HWDPcapacity • with seawater.TIH picking up S DPfrom pipeshed 1,2.575'.Circulate 1-12 times drill pipe capacity with • seawater.POD Hf/2.575t/surface.Tlri picking u p5'HWDP fro m pipe shedtl457'.Circulate 1-1/2times HWOP capacity with seawater.POOH 6457'/surface.ND ROPE.Remove Multi-bowl wellhead,install drilling spool,NUsameand test to5000 psi on chart 10min killrinDP RiJ test equipmentto body test ROPE. • • • Page 1/8 Report Printed: 9113,2010 PIONEER Operations Summary Report { 1%1 ATURAL RESOURCES DVS Lit i I clans+ stoma" ::oawarca liagr Alnaaa'Y 6/1412010 3,620.0 37100 9.00 Perform body test On BOPE to 250 psi lowi 4503 psi high on chart for 6 min each test.RD test equipment.PU 10.5/8'SHAfi2 V surface t1567.TIM(1567113,421'.Wash and ream V3,421"tag cement 1 at 3.507.Drill cement.float equip and 20 new hete43,507'113.620'.Circ BUS at 3,620'.Perform F I T a 3.589'and/2,990 tog with 9.7 ppg mud to 826 psi to/5/lW of 150 ooa.POOH f/3,620't/surface.PU BHA**f/surface 1/641'.TIH f/641't13,620.Drill 9-5r8"hole(13,620'113,685.Drop 1-547 bail and pump ball on seat,pressure up and sheer ball seat at 1200 psi to engage under reamer cutters.Pull 16k againstshoeto ensure cutters engaged.Drill 9-5/F hole f/3.685't/3,971'. 5/152010 3,971.0 1,618.00 9.85 Directional drilling l45/8`holeV3 9711/4.432'.Hotepacked off while drilling at4,432'and was unableto circulate.work pipette,and establish amulet on using step raternethod.Directional drilling 14.4r 115.589'. 6/16201C 5,589.0 1.75600. 985 Directional drilling 10-618`1/5.58946,063.Hole packed off whileit riilingat6.063'.work pipe and establish circulation using step rate method.Staged pumps back up to 85Ogpm and back ream stand tc clean up same.Directional drilling 96,063'47.355'. 6/1712010 7,355.0 1,965.00 9.95 Directional drilling 10-6/17'97,358V9320183 _ 6/1812010 9.320.0 145 CO 9.85 Directional drilling 10-518`6 9320'to IntermediateSl TO at 9468'MD(5253'TVD).Circ.hole clean. POOH 1/4432'.Pulled tightatthat point.CircH.V.sweep to clean up hole.Pull BHAinto casing and pulling up to 100k over.RIM tr3720.Establish tire.Backream out ofhete t2259.Ciro hale clean wiH.V. sweep.Continue POOH.LO BHA PU butlnose and Rhino reamer for cl eon out run.RIH 116003. 6(192010 3,468.0 0.00 980 RIH08003119334'.Reemo•en hole w/Rhino Reamer V9393'89465 bulinose depth 94617i `, Pump H.V sweep and cot host dean PDOH.Lt1IiHA.Install testp�ug Unange ottpm rams 70 9.5+8-. /�0 Test bottom rams to 250 psi low.4500 psi high f/S charted min each test Pull test plug Flush BOPEw; IJ stack washer Function test BDPE per AOGCC weekly requirement.PU3 HWT&6DCs Stand back. same.RU to run 9-5/8`400/L-80 Hod 521 casino. 6/20/2010 9.468.0 090 10.15 Run 9-5/F 40*L-80Hydrit 521 drilling liner V9196' 612112010 9,468.0 0.00 9.75 Run 9-518"406L Hydril621 liner 49453 shoe depth.Gement liner with 602til ls(291ax)Class'0' arattest to 3600 psi US charted min.Good test Test backsi de I iner top packer to 3500 psi 1/ min and chart.Good test.Circu latecasing dean.POOH w/5'OPanel liner running tool,T.O.L x3374'. 62212010 9,488.0 0.03 1C.10 POOHw/5"D Pendlinerrunningtool.RIHPU6'OPfromshedV3676'.Circulate1.5DPvolume.POOH Stand back OP,ND BOP an d related equip.NU wellhead equip,multi-bowl andriser.Wellhead Rep. tested wellhead conneotionsto 5000 psi 8110charted min.Good test.NU BOPE.C/lanae tower rams to 2-7/8'x 5-variables 1 8/23/2016 9,468.0 0.00 9.95 NU BOPE.Test BOPE equipmentp er PX.1)and AOG CC rules and regiOations.maintaing 11.8 ppg EON wJ MPD Troublestihootelectrical issues with top drive and repair same.Finish rigging up top dove RU testing equipment.TestUpper and LowerlBOPto 250psilow/4500 psi high held 6 mines. O Accumulator test System Pressure 3000 psi,After Closure2000 psi.Initial 200 psi recovery 15 sec's, f'S Full recovery 1 iron 38 sec's.Ali tests charted.Witness of test was weir ed by AOGCC Rep.Chuck Scheve on 1760 his 06/21/10.PU BHA and RIH t/9324'.CBU.Test casing and 11-314'x 9-us-liner lap to 3500 psi 1/30 charted minutes.Good test.Drill LC and FC 6)24/2010 9,468.0 988.00 1000 Pull trip nip plean d irts11 ft CD bearirig.13611 out shoe track and rathole 1/9468.11(11120 of new hole f/3468't19488',Perform FIT to 14.0opo E:MW,Good test.Drill 8-112 hole f/9488`1/10.456'maintaing 11.8 ppg EMA''w/MPD. • 6/26/2010 10.456.0 288.00 10.20 Drill 8-12'hole 410.456'V10.742 meintaing 11.8 ppg EW A'w/MPD.CBU.Pump 50 bbl LCIV pill at22 opt.P00111:9409.Mix 00132C pill.Spot pill M7301/9255'.Hesitation squeezepitlinto formation.CBU. • Hesitation squeeze remainder of 0052C.Wash&ream 1/9728'. • 6/2612010 10,742.0 0.00 10.00 Trouble shoot T.D.RIH 8-1/7 hot efi9728`V10,646'.Wash&ream V10.646'810.741'.400 bph losses • observed.POOH to shoe.Mix&pump high chlorides mud pill.Squeeze32 Mks into formation.Moo DOB2C pill and spot across lass zone between 9730.9255'.Squeeze 8 Mks 00620 into loss zone. ,Wash&ream t/978T.POOH looking for washout.No washouffound.RIH to shoe. 6/772010 10,742:0 444.00 10.20 Circulate atshoeiookireg for indication ofwashout.No indication observed.Westland ream 89439 1110,747.Directional drilling 8-112'hole f/10,742'U11,186'maintaing 11.8 ppg EMww/MPD. • Page 2/8 Report Printed: 3+13.2010 PIONEER Operations Summary Report ATURALRFSOURCES Vq amour son t3l •Ike .savW {n0 9umpalp. 628/2010 11.166.0 1.363.00 10.20 Directional drill 8-M2"hotefri1.166'tr12,549 mainteing11,8 ppg£b1Wwit,4PD. 6.292010 92;549.0 936.W 10.20 Drill S-1/2`1/12,549'Vt2.67Omaintamgll.Sppgt'MiR'eel MPD Oro hole clean wlHV.sweeps. Backream U12,67O1/12,245.RfH1/12,67O.Circulate and condition hole.Drill 15 rathole912.67O 1/12.685'.CBU.Circulate M.Y.sweep around.Circulate hole clean.Spot20 bbls LCM pill wi25ppb on EIE bottom.POOH on et orators V12:68502,38O.Backreim out of hotel/12.360't/12,165. 6/30/2010 12,685.0 0.00 1020.Shutdown backrearning operations clue to mudvolume isses.Build e703 bbls 10.2 ppg mud.Mixand pump 45 obis pill w/60 ppb LCM.Spot pill outside bit at 12,250.Allow pill to nag rate to bottom at 12.685.Monitor welt.POOH to 9-5/8'liner shoe at9451'.RIH to TO at 12,685'.Circ.open hole volume. Increase MIN to 11.3ppg.Begin increasing MW to 11.7 ppg in preparation for POOH andrun 7'liner. NOTE:Function test ROPE per AOGCC weekly requirements, 7/112010 12,6850 0.00 11.70 Circulate white increasing MW to11.7ppg.RemoveRCD and install Vie nipple.POOM1112,585 59,452.Hole swatlbingwhile pulling,pump 3.Sbbls down DP every Sstds Circulate and condition mud to monitor losses.POOH 99,453'tf558.POOH with BHA1/558 to the Download MVO/LWD toots.LD remainder of BliA115.TIH with 10 stands DP and POOH toying down same. 7/2/2010 12,66855.0 0.00 11.60 Sip and addriti line.Remove wear bustling.Install test plug-observed slightflowfrom well.PWlast plug.fill stack,monitor well for 30m in with 1/4 bbl gain-apparent ballooning.Install wear bushing.RU circulation tool and TIN from surface 1/1.900'.Circulate surface to surface.POOH 81.900111.61T Circulate and condition mud while monitoring well for ballooning.POOH f/1617 U475'.Spot 45 tiid 120 ppg pill f/476"to surface.Monitor well--static.Pull wear bushing,change out upper rams from 2-718"x5" VBRs to 7"single bore casing rams.Install test plug,RU test equipment,and test Teasing rams to 250 psi low/4500 psi high on chart 1or5m in each test.Put test plug and install wear bushing.RU Teasing equipment.Run T 261/1-80 Hydra 511 casing 113,348'.RD fill up toot,install X-O and safety valve to circulate. 7!3/2010 12.6950 0.00 10.30 Circulate liner cap softy at3,348"Run final tointof7 liner and m eke upWFT liner hangerpacicerfl?,348': 83 386'.T81 with T 2691-BO Hyd 511 line on FOPS/3386'19,243 Circulate and condition mud at 9,243'.TiH with T 260 1-80 Hyd 511 liner on 5-DP 9119.243'Ut 2.675.Establish circulation at 1/4 bpm and stageup pumps in 1/4 bbl increments up to 5 bpm.Drop 1-3M-hanger setting ball and pump down same at 3bpm with no returns.RU cement lines to cement head and secure same.Purnp 10 obis water cement lines to 4030 psi.held 5 min.Pump 60 bbls 12.0 ppg DUAL Spacer at 4 bpm at 1600 psi. Pump 31.3 bbls 173 sxllead 12 5 ODO Premium cement wit).75%Haled-344,_35%SCR-100.16 lbs/sti Microlite. 15lbs/sk E2-Flo 8.2%CFR-3 at 2 5 bpm at 1200 psi.Pump 20 4 bbls 191 sx1j tail 15.5 ppg Premium cement with 70%Hal ad-344..50%SCR-100..25 lbs/sk Super CBI.& CM-3 at 4.,,bonnet 2000 psi.Drop DP Wiper Dart.Pump lObbls water and switch tong for displacement.Displace cement with 267 bbls 102 ppg mud at 5bpm,ICP 1500 psi.Slowed pumps to 1 bprn prior to latching plug,shear plug with 1650 psi,increase pumps back.to 5 bp m.Bump plug and pressure up to 3503 psi.held min. OP @ 00:10 hrs 07/03110.Nn returns for entire rot Approximately 70 psi littpressurewas observed. • 7;4;201G 12,685.0 0.00 10.30 Finish displacing cementwith10.2 ppg mud at5 bp 1413 rrs mwitn1500psi.Bumpetlplugandpressuretpar 3600 psi,held 5 min.CPO 12:101-rc Nn return for entireioh Bleed off pressure and check floats- R.✓ floats holding.RDcement tines.PU to expose stomper dogs,set down w/405 on tinertop to set padre. Top of liner at 9254'.Circulate hole clean at 9,254'.Closeannidar and test line top packer to 3509/psi held 30 min on chart-Good test.RD cement head.POOH laying down 5'DP 99,254't/57'.LO liner running tool.Tll-1 from surface t/3.063'.POOH laying down 5`DP 113,063'to surface.Remove wear bushing.RUT casing equipment and held pre j ob safety,meeting.Run 7'260 L-8O BTC-M casing from surface 1/2.079'. 7/5/2010 12.6950 0.0: 10.10 Run?-2601-80 BTC-M casing 9R.OTBt/9.255'(Depth of seal assembly a 9,2643 PU 1O to position tie back seals at 9264'.testtie back seals to 3500 psi Good test LD 3loints casing 89.2451/9.145.PU casing hanger and space out ROI with same t19,264.Freezeprotect 113/4 X T annulus with 131 buts �IL� e diesel.Bleed otfpressure and strip through tubing to land tung hangerTest casing to 3660psi held 045!/21/1 • 30 min on chart--Good test Test 11-314'x 7'annulus to 3500psi held 30 min on chart-Good test.RD test equipment and landing joint.Install T pack off and test same to 5000psi on chart for 15min- Good test.ROT casing equipment.L07'pack oft running tool and install wear bus twig out bails on top drive and RU 5-handling equipment.Change out stabbtngguide.lower 1130P ontop drive and saver sub from 4-1/2 I.F.to4'XT-39.Chan-e out ia•er.i•trams fr. r. VBR's.T1H picking up 4'DP from men"`r. NOTE A10603 hrs on 07/04/10gave AOGCC 48 hi notice toi BODE test to be performed 07/06/10 Page 313 Report Printed: 9113!7010 it • • . PIONEER Operations Summary Report ATUR,AL RESOURCES r `9° 715201: 12685.0 0.09 1010 TlH picking up 4'DP fi1.325 1110.604`.Circulate DPcapacity and got contaminated mud tosurface-- circulatehole ciean.POOH racking back clean DP in derrick€10,604'to surface.Tltl picking up 4'OP from surface V7.907. "Gave AOGCC 24 hr notice of BOP test at0700 hrs on 07105/10`• 7172010 12.685.0 9.80 71/11/7,9071/8.446.Circulate hole clean.POOH V8,445'to surface.Remove wear bushing and install testptug.RU testing equipment.Test Annular to 250 psi low/2500 psi high with 4-DP Test Upper and Lower 2-7/8-x 5'VBR's,Band Rams.Choke and Kill Line HCR's,Choke and 1011 Lint Manual valves. floor Safety valve,Dart valve.Upper IBOP.14 Choke Manifold valves to 250psi low/4500osi high.All low and high tests held 5 min ea.Attests charted.Accumulatortest.System Pressure 3100 psi,After Closer 2000 psi.Initial 200 psi recovery 20 sec's.FuII recovery 1 min 37sec's Test witnessed by AOGCC rep Jeff Jones RD testing equipment.PU BHA from surfaceti il17.Upload MWDILWD data.shallow pulse test same--Good test.Install nuclear source and PU remainder of 6-1/8-13/1A V11711377'.Till €377 1116,11$'. 7/8:2010 12.685.0 226 CO 7.40 TIH 1110.018'V12,439'.Wash and ream V12.430'5112.547.Drilling cement and ft oat eaulpment(112,430 I l V12.685'.Directional drilling 6-1/8'1112.6&5'V12,705'.Perform F.I.T.at 12.675'md 16187 Nd arie to n.i, with a10.0 ppg mud wt.EMi1W.12.5 ppg.Load 40bblslli-vis seawater spacer In°Pend blow downtop �� ��"s drive.Remove trip nipple and install RCDbearing.Displace well from 9.8ppg YtBM to 7.2ppg OB 4 while maintaining 9.8ppg BCD with MPD equipment.Directional drilling 6-118'holes/12.705 V12.911. 7/912010 12.9'11.0 1289.04 7.40 Directional drilling S l/8 t/12.911`V13.942`maintain,g 9.6ppg EMW w/MPD.Tap drive Stall ed outWhit drilling.PU V13.9421113,906.check torque-pipefree.Troudestioot top drive torqueissues.P0011 V13.908'1112.665.Troubleshoottop drive and foundbrake caliper locked up.Bleed hydraulic presume oft of brakes and release caliper.Functiontop drivevvith no issues 711-11/12,6651113,947.Directional drilling 6-118'hole V13.9471114,200'maintaing 9.8 ppg LAM'w/MPD. 7/102010 14200.0 49.00 7.40 l irecti onaldtlllula6-1/8"hole1/142{01114249'maintaino9,8ovaBMA'w/MPD.Topdrivefailed-- break out ofsingleand ID same.Troubleshooltop drive torque issues.POOH 1114,2491/12:648'. Troubleshoot top drivecommunication and torque issues-AC motor on drive is bad.Stet changing out same. 7/1112010 14249.0 0.00 7.30 Continueto maintop drive repairs.Changing out AC tractionmat r 7112/2010 14,249.0 0.00 7.30 Continue to maketop drive repairs.Changing out ACtraction motor.Troublesti ootcmmirhon problems with newAC motor. 7/132010 14249.0 1267.00 760 Continue to repaittop drive Remove torquebooster and install dust cover.Hook up brakes andaeed same.Install gooseneckand Kelly hose.Testkelly hoseto 4696 psi.RD circulating sub,Cement life. and scaffolding.TIH 1112,665'5114.166'.Stage pumps up to full rate.wash and ream(114.165 V14.249. Directional drill 6-1,8"hole f/14249'V15.277 niaintaing 9.8 ppg Et W wI MPD.Adjust AC parameters on new top drivetraction motor Check top drivetorque against toad celland found errs reabngs on top drive.Directionaldrilling 6.1,8-hole f115.277 V16345 ma intaing 9.8 ppg EMW w/MPD.POOH 1/15.345'1114262'.Check torque on alitop drive connections.Tali f/14262'1/16,345.Directional drill 6- 1/8-hole V15,345'1/15616 maintaing 9.8 ppg EMW wi MPD. 7+14,2010 16,516.0 2,044.00 7.65 Directional drilling 6-1/8'hole f/15.516 V15,929maintaing9.8 ppg EtK AIw/MM.RCD element failed- dose annular to maintain EMW of 9.8 ppg and change out RCD bearing.Directional drill€-L$"hole 1115,W91/16286 maintaing 9.$ppg EMW w/MPD.Input new VFD parameters for AC motor an top drive.Directional drill 6-118.hole 1116,288'V16,876'maintaing 9.8 ppg 651/8 w/MPD.Input new VFD parameters for ACmotor on top drive.Directional drill 6-1/5 hole 616.876'1/17.349 maintaing 9.8 ppg BMW W!MPD.Perform weekly function test of BOPE.Cheer,top drive torque values againsttong load cell-indicates there is still an issue with VFD parameters for top drive.Directional drill6.1R"hole 617,349 1117,560 maintaing 9.8 ppg EMW xi/MPD i 7115201 17.560 0 1,140.09 7.74 Directional drill 6-1/5 hole t/17,560-1118.700'maintaing 9.8 ppg EMW nu m.Bacaeam€18,700 V18.507'.Circulate hole clean WI 4x open hole volume.POOH 1/12.622'(53'inside casing).Rill 1/12.622' 1116.191'. 7/16:201: 18.7000 0.00 10.10 R13ion elevators V16.191'V17,642'.Wash&ream 617,542'078.516 due to no down weight CBUWhile taking on new 72 ppg M08M.Pump new 7.2 ppg MOBM and spot across lateral section.POOH .5113.780'.Pump 40 bbls 10.1 ppg H.V.MOBM pill.Spot across sump area of well.POOH V12,627(63 inside casin g).0isplac.ewell w/10.1 ppgMOBM.Monitor well.Continue P001-1V3267. Page 4/8 Report Printed: 9113/2010 PIONEEROperations Summary Report NATURAL RESOURCES leaaa 1/Ya ma On Bert bap►lack e,Mule 9I l • Sammy 7/17/2010 18,700.0 0.00 10.10,POOH V3267l1377'(BHA).Download MW'DtootsandLD BHA.Pull wear ring.Install test plug.Test lower variable rams w/4-1/21testjtto 250 psi low/4500 psi high for 5 charted min each test.Test annular w/4-112 testjtto 250 psi low 72500 psi high for 5 charted min each test No failures.Pull test plug.Install wear ring.PU 21 jts 4'H TT.to 640.Circ.pipe volume.POOH stand back HWT.RU&run 140 jts of 4-12-liner and jewelry V667201 RIH wl4-112`liner on 4 DP 115131- 7/1.5/2010 18.700.0 0.00 10.10 Continue RIMw14-1/2'12.69L-60Hyd.621 liner on4'0Pf1B131'V18.515.Obtain parameters.POW 2651.SOW 661 Pump wl 3 bpm to release'G'spear rurt113ng tool from liner PU to verify release.Lost 65kup weight.Liner top at12.819.Shoe et18.515 POOHV12,603.Ciro end condition untrlM/1 in. MW out at101 ppg.POOH to surface LO liner running tools While POOH,tested chok ern anifol d to 29D psi law/4500 psi high lot 5 charted nun.each test.Nofeilures.AOGCC Rep.Bobhobte waived witness of test at 12 30hrs on 07/16/2010.R11-1 PU 4'DPto 31800'.POOH standing back same Pull wear nng ( RU to test BOPE.Begin testing BOPE per AOGCC and PXD rules and regulations. 7/19'2310 15 700 0 07 1010 Continue to test 50PE er AOGCC&PX0 rules and regulation.;Test annularrupper&lower Nib'rams wi 2-7/8'54112'test jts.Testannular to 250 psi low/2503 psi high for 5 charted min.each testTest all of other components to 250 psi low/4500 psi high for 5charted min each test-upper&lower 2-7/8'x 5' VBR's,blend rams.choke&kililone HORS.choke&kill line manual valves.8oar safety valve.dart valve. 14 choke manifold valves Perform accumulator test.AOGCC Rep.Bob Noble waived witness o1 test at 12:30 hrs on 07/16/10.PU BHA 6-1/5!27&R911/44T.Perform torque calibrations an Top Drive. Continue RIH on COP V9.996 , 77201010 12.783.0 11.00 7.80 RIHf19.996'V12.500.Service rig.cut drilhng lint.Pull trip nipple Install RCD head.Displace ill ewetif 10.1 ppg MOBM to 7.9 ppgMOBM.RiH!/12.614'to verify no tag ofupperlMeat liner top.Troughing 1 sidetracking 1/12761'!112783 imedrillingg6-118"holewhilemaintaing9.B oAEMWvrtfulPO/ sidetracking away from origina wellboreV12.783'1/12,794'. 7/2/12010 12.794.0 2.911.03 7.90 Directional drilling ODSN-16L1 lateral 6-11 88'hole fr1i794V15,105maintaing9.8ppgEbfWw/tiPD L 7722/2010 16.105.0 2.58500 7.95 Directional drill 6.1/8'hotel15.1055'915.973 maintaing 9.8 ppg Ehit/V MPD.Change oulRCD head. Directional drill 6-1181hoIef/15.792 V16.551'maintaing 9.8 ppgEM1wiMPD.Change out Top Once ��-�%�L saver sub Directional drill 6-1/81 hole616.551'1117,130 maintaing 9.8 ppg EMA'w/MPO.Back ream 1(e-/f 1116.683'.Take checkshot surveys.Rift 1/17.130.Directional drill 6-1/81 lateral hole V17.130 V17.693 maintaing 9.8 ppg 06M wJ MPD. 7/2372010 17690.0 2.430:00 7.95 Directional drilling 6-1/8-lateral hole V17,590'20,120 maintaing 9.8 ppg EMW wi MPD. 704/2010 20.1200 393:03 8.00 Directional drill 6-116-lateral hotet/20.120'1f20.513'(6.118'TD)maintaing9.6 ppg EfvfWw/MPD.CBU 2X.POOH for shorttrip to r casing shoe at 12,675.C6U 2X.Gut drilling line RlH!113,659. 7/25/2010 20.513.0 0.00 8.00 RI (/13.659'1/18,570'.Wash B ream due to no down weight f/18,570 V19,400'.Circ.and condition mud. Build volume.Weight up same.Continue wash andreamt/20,312'Pump new 7.2 ppg MOBM end spot -('p across lateral section V20.312'V12665'.POOH 1/20,3121/15,377'.Pump remainder of 7.2ppg out of dri llpipe and spotin open hole.POOH V13.082'.Pump 101 ppg H.V.pitl across"sump'areaofweli. Continue to POOHto r casing shoe.Begin displacing well w110.1 ppg M084 Function test ROPE per AOGCC weekly requirements. 7/2612010 20,5130 0.00 10.10 Conbnue to Displecewetlto 10.1 ppg MOM V12.600'to surface.Mon#or well.Pull ROD head and install trip nipple.Circulate 1/2 BU to to ensure 10.1 all the way around function test BOPE per AOGCC weekly requirements.POOH 1/12,60011/351'(BHA).ID BHA,PU 4'MWT for liner run and stand back same.RU and nit 4-1/2112.61/hear io=683'. �.✓" • • • 7/27/2010 20,513.0 0.0D 10.10 Ran 194jts9.172''12.68 liner tl.804'.Continue to run 4-1/2^liner on4-DPV17.097. 77282010 20.513. 0.00 10.00 Conbnue RlH vi/4.1/7liner on 4'DP 920,310 Set hanger and release.Set packer.Test liner top packer to 3530 psi for 30charted mm.Good test.POOH 1/12,300'.Displace well with 10.0ppg brine 512.300'to surface.POOH LO 4-DP NOTE:Liner shoe et 20.312'•Liner tun at 17 Fn7' 7/2912010 20,5130 0.00 10.00 POOH f/1,778't/41'laying down 41 DP.LD scraper-magnet assembly,and setting to ol.Cleen and clear rig floor while making up 4 mule shoe.TIH from surface 1/7,495'.Slip and cut drill linewhite testing ESP cable.POOH 1/7.495 to surface laying down 41DP.Pull wear bushing and install junk screen.Flush stack at 650 gpm for 15 min,pull junk screen from well head.RU 2-7/81 tubing equipment,ESP sheave. and equipment. Page 5/8 Report Printed: 911312010 { PIONEER Operations Summary Report VATURAL RESOURCES Daa at uw fall pat sun Dew 1K3'. FEKONVE(r.. {Al's]' >MMIly 713012010 20,513 0 0.00 1000 Finish rigging up2-718'tubing equipment.ESPsheave,and equipment.MU ESPpump assembly,install motor lead,and attach same with 8 cannon clamps,and 4cry stafizers.FiII ESP with pump eil.Splice motor lead to ESP cable and meg test same-Good test RIM with 2-7/r 6.54 L-801BT-M tubing from surface 1/7.3151 PU Hydro 2 Retry Packer 47.315'1/7,378'.Measure and tut ESP cable and feed same thru packer,lower ESPcable to the ground andchenge out ESP cable spool. 71312010 20.513.0 0.00 10.00 Change eta ESPeable Spool,and feed same thru packer,install spliceconnectors.and meg testswne- Good test.Install control line on packer-and test same to 5000psi for 16 min and test packer vent valve to 3000 psi for 5 min-Good test RIM with 2-7/8"6.54L-80tBT-M tubing f/7.358't112.225'PU tubing hanger and landingjoint.Make SSSV control line and packer gas ventline penetrations through Wng hanger.and test packervent line to 1000 psi and SSSV controllinelo 5000 psi for 15 min-Good tests. Make ESP cablepenetration through tubing ri anger.and test same-Goodtesl Land hanger 912236 912270'with pressureon all lines.and verified hanger landed.Run in hanger lock downs andlesttppr and tower hanger seals to 5000psi on chart for 10 min-Good test ND all MPD equipment.ND BOP stack and drilling riser.Make SS-RV control line packer vent line andESP cabepenetretiorts onmeil head and test same-Good tests. 8/1/2010 20,513.0 0.00 10.00 Make HES SSSV control lin e,packer vent line,and ESP cabepenetretionson well heed.TestSSSV control lineto5000psi and packer vent line to 1000psifor 15min-Good test.Install and NU pro dudion tree.Test void to 5000 psi on than 5 min.Body test tree to 260/5000 psi on chart 5 min per test.Pull TWC and drop ball and bar.RU circulating manifold on toting and LA.Pressure up to 3500 psi to set and energize packer.Test tubing to 3500 psi on chart for 30min--Goodtest.Bleed down tuba to 500 psi and attempt to test annulus to 3500 psi-No test Bled down annulus several times to remove air from lines-Molest.Re-rig circulation manifold and pressure up to 4000psi--No test.Bleed off annular and tubing pressure,RDcircuiating manifold and lines.RU ESP sheave to pul IES'Pline.RU stickfine unit and sheaves.RIM and retrieve bail and rod f/5,155'wlm.ROstitk.line unit.Install BPVin hanger and ND production tree.NUBOP stack.RU test equipment.fiil stack and starttesting BOP equipment.Tested annular to 250psi low and 2500psi high 5min on cleat.AOGCC rep JeftJones waived witness attest on 07/31110. 8/2'2010 20,513.0 0.03 10.00 Test Upper and Lower 2-7/8'x5'VBR's Blind Rams,Gloke and 1011 Line HCR's Choke andkill/int Manual valves.Floor Safetyvaive.Dart valve.Upper IBOP.14ChokeManifold valves to 250 psllowi 4500psihigh.All low and high tests held 5 min ce All tests charted.Accumulator test.SystemPressure 3000 psi.Alter Closer 1900 psi.lnttiat 203 psi recovery 21 sec's.Full recovery 1 min 43 sec's Test witness waived by AOGCC rep JeftJ ones.RD test equipment,pull test dart and BP./from tubing hanger.PU and MU tending joint.Pi lland unseat hanger with 90k Packer sheered at 180kta unset same.Monitor well 30 min while packer elements relax.LD tubing hanger.Cu Land terminate SSSV line. packer vent line.and ESP cable.POOH with 2-7/r 6.54 1-80IBBT-M tubing 1/122391.49,528 racking stds in derrick.Change out packer ventline spool.POOH with 2-7/8'6.541-80 lBT-Mtubmg 179,628`t17.315. Inspect packer.seal eleenents look good no sign of fluid bypassing elements Test packerveit valve to 4000psi--Good test.Test ESP cable--shows ground to ESP motor.POOH with 2.7/8-tubing 97,315't/7,077,Chanceoud ESP cable scoots in saodlrno unit POOH with 2-718-tubina 47072'43.308, 6/312310 20,513.0 0.00 1000 PDOH with 2-7/8`6.5*L-80IBT-M tubing f/3.308`to ESP at 69 racking stdsin derrick.Inspect ESP for -, damaaeardfoundthemotorleedwasearted,ramoveallhardwarefromESP.DisassembleESP.RD ESP cattle and change oul cable sp oo I.RU new ESP cable over sheave and stagenew ESP parts.Tested 9-518-x T annulus to 3500psi 5min--Good test.ReassembeESPwith new tandem motor seal.Purge pump with ESP oil.Change out motor lead,MU pressure/temperature gauge,and test same to 3500 psi-Good test.Splice motor lead to ESP cable and meg test same--Good test RIM with 2-7/8`6.541-80 IBT-M tubing ft surface 12,898 8/4,201C 20.613.0 0.00 10.00 RI H with 2-71`6.54 L-80113T-M tubing 12,8981/7364.PU Hydro 2 Retry Packer with ESP feed thru with gas ventvalve.Measure and cut ESP cable endfeed samethru pack er,install splice connectors. and meg test same-Good test.Install control line on packer and test same to 5C00 psi foul function and test packer vent valve to 4000 psi for 15 min-Good test.RH with 2-7/8.6.541-80 IBT-M tubing 117.364 V12.226'.PU tubing hanger and-landing joint.Make SSSVcontrolline and packer gas vent line penetretionsthrough tubing hanger.andtesl packer vent line.and SSSV control line to500D psi. for 15 min--Good tests.Make ESPcable penetration through tubing hanger.and testsame--Good teat. 1 Page 619 Report Printed: 9/1312010 PIONEER Operations Summary Report NATURAI RESOURCES I 'rur Era are Sa^Dvri.m{a =32Ii?tRr57. 1,533 suumil 815/2010 20.5130 COO 16.00 Finish making up ESP penelration and meg testsame--Good test.RIH and land tubing hanger f/12.226 1/12,271'.Test upper and!owe/hanger seals to 5000 psi for 10 min on chart—Good test.Drop ball and rod,pump to set packerat 3500 psi.and test tubing to 3500 psi on chart—Good test.Bleed down tubing ores sure to50D psi for annulus test.Attempt to test 2-7/8 x r annulus to3500 psi—Notest.Function packer vent valve.Retest 2-7/8x7-annulus to 3506 psi onchart3Omin—Good test.NDBOP equipment.Terminate S5SV control line,packer vent tine.and ESP cable.Meg ESP cable—No test.NU BOP equipment.RU test equipment and perform body test on BOP stack to 250/4500 psi-found leaking blind flangeon blind wars.Changeout API ring on leakingfange.Perform body baton BOP stack to 26014500 psi--Good tat.Test witness waived by AOGCC rep Check Scheve.RU ESP sheave [ to pup ESPline.Pull test dartand TWC.RU slickline unit and lubricator.RIH with overshot to retrieve ball and rod.Missedball and rod on run land 2--suspect wepulled the GLVfrom theGLM.Run impression block on run Sand confirm GLV is sitting on top Obeli and rod at 5,154'wtm.PU and MU 3.1/2"landing joint.Unseal hanger with85k and attempt to sheer packerto set same.Work pipe at80%of tensile strength with nosuccess.Continlieto workpipe at mis pull of 170k with no success. 8162010 20.513.0 0.00 10.00 Continue to work pope at Max pullet 178k with no suceess.RU lines to reversecursaate down IA taking returns thru tubing.Pump 2 bbls at 1/2 bpm with no returns—dummy GLV still seated.RU slickline unit and lubricator.RtHwith kick over toot purl and retrieve dummy GLVfi4.729 elm.RD slickline unit and lubricator.Reverse circulate 140 bbis 013%OP mud tube 10.0 ppg brine.Unseathanger with 85k and atlemptto shed packer to unset same.Packer sheered at 170E max pull Build 140bbis of 10.0 ppg brine at Me RSC to displacethe 3%EP mud rube in the hole Pull hanger up to the rig floor.terminate ° control lines,andtesttSPcable.Foundimproperly assembled ESP Cable connectorat tubing hanger. Cut off bad connector and megtestESP cable--Good test.LDrending jorntandhanger.Displace 140 bbls of 3%EP mud rube 10.0 ppg brine out the hole with dean 10.0 ppg brine.POOH with 2 718'6.6#L- SO tBT-M tubing 1112.220 1110,271. 61712C 20.513.0 0.00 10.00 POOH with 2.7/8'tubing f'10,271't/9;55T.RUslrcktine unit and lubricator.RlH with slickline and retrieve dummy GO/1/2.435 aim Runs 2 and 3--Install dummy GLV at 2.012"wim and 2.346'wim,RD slickline unit and lubricator.RU cementline to tubing and attempt to test tubing,packer and GLM's.Pump at 1 bpm with Opsi,observed returns—No test.RU slickline unit and lubricator.Rift and retrieve ball and rod f12.440'wlm.R111 and retrieve RHC plug V2,448'wlm.RD slickline unit and lubricator.POOH with 2-7/8" -tubing V9.557 1/1,378".Terminate SSSV control line,packer vent line,and ESP cable.10 packer as per WFT rep.POOH with 2-7P8`tubing 111.370117.174'.10 GLMto the pipe shed.Redress GLM's and X- nipple.TtH with 2-7/8`tubing 0,174'117,224'.Measure and cut ESP cable,meg test same—Good lest. Install spl ice connectors:and meg tat same--Good test.Rlll with?-7f8"hudrg f1224'(1.592'. 8/8/2010 20.513 0 0.00 10.00 RIH with 2-718'tubing V7.692'V9.553'.Pick up WFT Hydro 2 Reim Packer.Measure and cut ESP cable and feed samethrr:packer.install splice connectors,and meg test same—Good test.Instapurkd line on packer and test same to 5000psi for 15 min,function and test packer vent valve to 4000 psi for 15 mm-Good test.RIH with 2.718'tubing VP9553'1112,236.Make SSSV control line and packer gas vent line penetrations throughtubing hanger,and testpaciier vent line.and SSSVcontroNinetz 5000psifor 15min—Good testt.Make ESP cable penetration through tubing han ger.andtest same—Go od test. RIH and land tubing hanger 1112236'!+12,270'.Test upper and rower hanger seals to 5000 psi for 10 min on chart--Qoedlest RU cement lineto pump down tubing to set packer.Set packer at4000psi,and test tubing to 4000psi on chart—Good test.Bleed down tubing pressure to 500 psi forannutus test Attempt to test packer down the annulus to 3500 psi—No test ND and raise 5OP stack:to obtain visual on tubing hangerpenetretions.Attempt to testpacker down the annulus to 3500 psi—Retest.No leaks observed athengerpenetrations.Nipple up BOPstadr 8.5./2010 20.513.0 0.00 10.00 ND BOP stack,terminate control lines NU BOP stack.Perform body test on BOPE to 25014500psi-- Good test.Pull TWC.and install SPY with test dart.RU test equipment.Attemptto test Annular to 250 psi low/2500 psi high with 2-718-tubing—Tat faired.Test Upper and Lower 2-7/W x 5'VBR's with 2- 718"tubing and 4"DP.Blind Rams.Choke and Kill Line NCR's.Choke and KilI Line Manual valves,Floor Satety valve,Dart varve.Upper IBOP.14 Choke Man iford valves to 250 psi low 14500 psi high.All low and high tests held 5 min ea.All tests charted.Accumulator test,System Pressure 3100 psi.After Closer 2000 psi,Initial 200 psi recovery 20 sec's,Full recovery l min 40 sec's Test witness waived by AOGCC rep Lou Gramaldi.Change out element on a n nularp r ev enter.RU test equip,and test Annular to 250 psi low/2500 psi high with 2-7/8"tubing—Good test.Each test held 5 min on chart.Pull test dart with BPV, and ND SOPstack.Reconnect SSSV and PA/control lines through the stack and test same to 4000 psi each for 10 min--Good test.NU BOP stack.Pull BPV.install 3-112'landing joint.and RU cement line to pump down tubing to energize packer dements.Pressureupto4500psitoenergize packer element on chart 15min--Good test,RU slictdine unit and lubricator.RIH to retrieve ball and rod. Page 7/8 Repnrt Printed: 9:132010 PIONEEROperations Summary Report !ATURAL RESOURCES ova Jilt *AO r11.1:',ate err_ -1a,<8 xrrna+aan ft, PCP; SOM417 81107010 20,513.0 0.00 10.00 RIH with sfickfine and r etrieve ball and rod at 2,793.wim.R1H retrieve RHC plug at 2.807 Wm.RIH attempt to set RMC plug at 5.165 win;—unsuccessful.RIH to set RHC but sat down in SSSV at 2,017' wtm and set plug.RIH retrieve RHC at 2,017.RIM and set RHC at 5,166.RIH pill dummy GLV from GLMat5.092'wfm.RDslicklineunitand lubricator.RUlinesto reverse circulate thr ough gas vent valve on packer.Pump5bbls down annulus through PWtaking returns through tubing.Attempt to test packer down annulus to3500 psi—Notest.Pump 10 bbls down annulus through PW taking returns through tubing.Attempt to test packer down annilusto 3500 psi—No test.RD circulating lines.Nipple down BOP stack.terminate SSSV control'intend packer vent valvecontrol line.Nipple up SOP stack.RU test equipment.Perform body test on BOPE to 25014500 psi--Good test.Unseat hanger with 80k and sheer packer with 148ktounset same f112,270t112,226'.Terminate control lines.attach ESP cable to spooling unit and meg test same—Good test.POOM with 2-78"tubing V12,226't73,540"LD packer as per WET rep.Terminate SSSV control line.packer vent line,and ESP cable.Teat PVV to 40OO psi-- Good test.RU slickline unit and lubricator. 111112010 20,513.0 0.00 10.00 RU slickhne unit and lubricator.RIH ano set dummy GLV at 2,363'wim.Drop ball and rod.RU cement iineto test tubin g.Pressure test tubing to 3500 psi on chart 10 min—Good test.RIH ana retrieve ball and rod at 2.217 vim.RD slickline unit and lubricator.PU Hydro 2 Retry Packer with ESPfeed thru with gas vent vat,/e.Measure and tact ESP cable and feed same thru packer,install splice connectors.and meg test same—Good test install control lineon packer and test sameto 5000 psi for 15 min,function and test packer vent valve to 4000 psi for 15min-Good test,RIH with 2.718"tubing fl9508'till,47B' Meg test ESP cable—No test.Consult ODE for plan forward--charge Megg et Metter and secure 2nd Megger meter from Oliktok.Terminate control lines.attach ESP cable to spooli rig unit in preparation for pulling outttiehole.POOH with 2-718-tubingV11.478'!19,540.Inspect all connectors found wet PFT connector atpackerTerminate packer vent line.and ESP cable.Remove PET connectors from EEP cable.Meg ESP cablefrom PFT connecotr to the ESP motor--Good test.Measure and dIESP cable and feed sametnru packer.install splice connectors.ano meg testsame—Good test.Install control fine on packer and same to 5000 psi for 15 min,function and test packer vent valve to 4000 psi for 15 min-Good test.RIM with 2-7/8'tubing 119,540 1+10,262".Meg test ESP cable at SSSV—No test.POOH with 2-718-tubing 1110.262'U8,540. 512t2313 204110 0.03 10.00 Run 2-718'ESPcomplett on to 9540°.Badteslat PM'connection.Wait on centrilift tools.Continue running completion 1110248'.PU ScSSV and control tine.Test sameto 5000 psi for 15 min.Good lest, Continue to run 2-7/8-completion per pr ogram!112,228'.Meg.ESP every 1000. 8t131201C 20.513.0 0.00 10.00 MU hanger.Makecontrol line penetrations.Retesttines to 5000 psi.Good test.Male splice.MegESP cable.Good.Ritiand land tubing hangerf112228 8112.258.Used pigtail to continuously monitor ESP. Run in lock downs and drop ball and rod.Test upper&lower seals to 5000psi 10 min.on chart Good test.Pressure up on tubing to 3600 psi for 30 charted min.Good test.Bleed tubing to 500 psi.Pressure annulus to 2500 psi for 30 charted ran.Good test.Meg ESP cable.Good.Install TVI1C.ND BOPS Terminate control lines.Meg SW cable.NU tr ee.Test tree to 250 psi low,5000 psi U 5 charted min.ea. Test control fines to 5000 psi.Meg ESP cable.Pull TWO.Secure well.Rig releases 08/12l10l 2400 hrs, RDMO 1{rrall*ODSN-16. 5x14'201: 20,513.0 0.00 1000 RU slickline.R111 with overshot and latch bar and ball at 5110 SLMD.POOH.RIM with 2.5`0M-1 kickover tool and pull dummy GLV Nom station 82 at 5039 SLMD.RBIH and set screen orifice with 5116- 1 orifice in stations*2.Goodset.RIH with 2.31"GS,latch and putiRl-IC plug from lowest Xnipple at 5118 SLMD.RD sliskline.Flowlines are rigged up.Instrument tech s working on actuated va Ives.Cer*akt has no powertodrive.Begin troubleshooting. 8i182Ot. 20.5130 0.00 10.00 Complete troubleshotting drive.Hook up whip from box to tree Communication estabIrshed to esp. Pressuretest newly installed surface lines.Well opened up to production at2135.Sampling as per program. 6,29'20 20.513.0 0.00 1000 Pump 1 gal of hydraulic fluid mixedwith 1 can of GX Safety Seal,after displacing the volumeofthe control to the packer vent valve.the leak sealed and held 5000 psi fort hours.turned over to production. Page 818 Report Printed: 91130010 I le al PIONEER NATURAL RESOURCES ALASKA Letter of Transmittal Date: August 2, 2010 FROM TO Shannon Koh AOGCC Pioneer Natural Resources Attn: Christine Shartzer 700 G Street, Suite 600 333 W. 7th Avenue, Suite 100 Anchorage, AK 99501 Anchorage, AK 99501 INFORMATION TRANSMITTED ❑ Letter ❑ Maps ❑ Report X Other—logs, CD ❑ Agreement DETAIL QTY DESCRIPTION ODSN-16 (API: 50-703-20620-0000) ODSN-16L1 (API: 50-703-20620-6000) 2 CD-Roms LWD Final Processed Data (digital graphic logs, digital data) 8 Well Logs DGR EWR-Phase 4 CTN ALD Invert/Revert Section (1:600) 0/0-053 /99 (9 / DGR EWR-Phase 4 CTN ALD Invert/Revert Section (1:240) DGR EWR-Phase 4 CTN ALD Horizontal 2l 0-e /99 6 D Presentation (1:600) DGR EWR-Phase 4 CTN ALD Horizontal Presentation (1:240)�(� We request that all data be treated as confidential inform t� i> r. �M IMED Received by: lam. Date: AUG ?) ' 2010 c..6 Please sign and return one copy to Pioneer Na' cki .commission I ATTN: Shannon Koh Anchorage 700 G Street, Suite 600, Anchorage, AK 99501 907-343-2190 fax SIZE o ALASEA SEAN PARNELL, GOVERNOR ALASKA OIL AND GAS 333 W.7th AVENUE,SUITE 100 CONSERVATION COMI9ISSION ANCHORAGE,ALASKA 99501-3539 PHONE (907)279-1433 FAX (907)276-7542 Alex Vaughan Operations Drilling Engineer Pioneer Natural Resources Alaska, Inc. 700 G Street, Suite 600 Anchorage, AK 99501 Re: Oooguruk Field, Nuiqsut Oil Pool, ODSN-16L1 Pioneer Natural Resources Alaska, Inc. Permit No: 210-054 (revised) Surface Location: 2945' FSL, 1167' FEL, Sec. 11, T13N, R7E, UM Bottomhole Location: 367' FSL, 5238' FEL, Sec. 4, T13N, R7E, UM Dear Mr. Vaughan: Enclosed is the approved application for permit to re-drill the above referenced development well. The permit is for a new wellbore segment of existing well Oooguruk ODSN-16, Permit No 210-053, API 50-703-20620-00. 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 Commi sion specifically authorizes a variance. Failure to comply with an applicable •ro sion of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, • a C., mission order, or the terms and conditions of this permit may result in the --vocati.n or suspension of the permit. ./, Norman missioner DATED this J day of July, 2010. cc: Department of Fish & Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA JUL 1 9 2010 ALA, ,OIL AND GAS CONSERVATION COMMI, JN PERMIT TO DRILL Alaska ON&Gas Co,Commission 20 MC 25.005 A:ichDraae Re0'S6n la.Type of Work: . 1 b.Proposed Well Class: Development-Oil 0• Service- Winj ❑ Single Zone 2- lc.Specify if well is proposed for: Drill ❑ Redrill El Stratigraphic Test ❑ Development-Gas❑ Service-Supply ❑ Multiple Zone ❑ Coalbed Gas ❑ Gas Hydrates ❑ Re-entry ❑ Exploratory ❑ Service- WAG ❑ Service-Disp ❑ Shale Gas ❑ 2.Operator Name: 5. Bond: Blanket 0 Single Well ❑ 11.Well Name and Number: Pioneer Natural Resources Alaska, Inc. Bond No. 103655283 - ODSN-16L1 ' 3.Address: 700 G Street,Suite 600 6.Proposed Depth: 12.Field/Pool(s): Anchorage,AK 99501 MD: 20,501' TVD: 6151' 4a. Location of Well(Governmental Section): 7.Property Designation(Lease Number): Oooguruk-Nuiqsut Oil Pool . Surface: 2945'FSL, 1167'FEL,Sec. 11,T13N, R7E, UM " ADL 355036/ADL 355037 ' Top of Productive Horizon: 8.Land Use Permit: 13.Approximate Spud Date: 361'FSL,4900'FEL,Sec. 10,T13N, R7E, UM • 417497 July 19,2010 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 367'FSL,5238'FEL,Sec.4,T13N,R7E, UM ' 5760/5724 380' 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-469831.04 , y-6031061.18 , Zone-ASP 4 GL Elevation above MSL: 13.5 feet to Same Pool: ODSN-15i is 1272' . away 16.Deviated wells: Kickoff depth: 12,769 feet . 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 82.48 degrees Downhole: 3135 , Surface: 2458 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 7976' 12,525' 6159' 20,501' 6151' 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 TVD Conductor/Structural 115' 16" Driven 158' 158' Surface 3550' 11-3/4" 618 sx PF'L';267 sx Class'G' 3589' 2988' Intermediate 1-Drlg Liner 6054' 9-5/8" 291 sx Class'G' 3375'-9453' 2896'-5244' Intermediate 2 Tie-Back 9224' 7" - 9262' 5244' Intermediate 2 3421' 7" 73 sx Class'G'12.5 ppg; 9254' 12,675' 5166' 6185' 98 sx Class'G'15.8 ppg Perforation Depth MD(ft): N/A Perforation Depth TVD(ft): N/A 20. Attachments: Property Plat Ei BOP Sketch❑ Drilling Program ID Time v.Depth Plot ❑ Shallow Hazard Analysis Diverter Sketch❑ Seabed Report ❑ Drilling Fluid Program 0 20 AAC 25.050 requirements 21. Verbal Approval: Commission Representative: Date 22. I hereby certify that the foregoing is true and correct. Contact Alex Vaughan,343-2186 Prepared By:Kathy Campoamor,343-2183 Printed Name Alex Vaughan Title Operations Drilling Engineer Signature --� Phone 343-2186 Date 7/19/2010 Commission Use Only Permit to Drill , API Number: Permit Approv I /.j/2. 4 See cover letter for other Number: 2/ -L),S 50-7(3--2.(-_,6 Z --61?.-CO Date: requirements. Conditions of approval: If box is checked,well may not be used to explore for,test,or produce coalbed methane,g�s hydrates,or gas contained in shales: 27/-Other: . '5 p0 70�-� QaP I e Sfi Samples req'd: Yes❑ No L� Mud log req'd: Yes p No 1/ L- H2S measures: Yes❑ No2' Directional svy req'd: Yes [`No❑ 1F Z 506 r GI An•.....4..z y- ideiye, DATE: 7'27 PPROVED BY THE COMMISSION /0 ,COMMISSIONER -�-/0 /�"4 ?if iu ii Q R, • l 7/1.'la k Form 10-401(Revised 7/2009) This permit is valid for 24 m nt s rom h(date of approva 20 AAC 25.005(g)) Submit in Duplicate Alaska Oil & Gas Conservation Commission July 19th, 2010 Page 1 of 3 Julyl9th, 2010 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-16L1 Surface Location: 2945' FSL, 1167' FEL, Sec 11, T13N, R7E, UM X = 469831.04, Y = 6031061.18, 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 the second lateral of a multi-lateral production well in the Oooguruk- • Nuiqsut formation. PNRA requests the Permit to Drill based on approved Pool Rules. ODSN-16L1 was originally permitted and approved (PTD #210-054) on April 29th, 2010. PNRA is applying to re-permit ODSN-16L1 due to -2,000' lengthening of the lateral production section. As indicated in the attachments, the drilling and well construction program includes the following: • ODSN-16L1 Production Hole: o Kick off ODSN-16 lateral @ 12,769' MD /6,202' TVD • o Drill 6-1/8" horizontally to -20,501' MD / 6,151' TVD and set a 4-1/2" solid liner with perforated pups. • Completion: o 2-7/8" tubing PNRA will implement Managed Pressure Drilling technology (MPD) while drilling the Production hole section of ODSN-16L1 as outlined below. • From the Intermediate 2 Shoe to ODSN-16L1 TD o Use -7.2-8.2 ppg fluid while using MPD to control pressure from the surface to -9.8-10.2 ppg EMW at the bottom of the hole during connections and while tripping Utilizing the MPD process described above allows PNRA to reduce the materials needed for the well, increasing the overall safety of the personnel on the development by handling less material. In addition the lower solids in the production section mud system will reduce formation damage along the sandface of the well. Alaska Oil & Gas Conservation Commission July 19th, 2010 Page 2 of 3 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. Please find attached information as required by 20 AAC 25.005 (a) and (c) for your review. Pertinent information attached to this application includes the following: 1) Form 10-401 Application for Permit to Drill per 20 AAC 25.005 (a). 2) A copy of the proposed drilling program per 20 AAC 25.005 (c) (13) including: a. The drilling fluid program as required by 20 AAC 25.033 b. Complete logging and mud logging operations are planned and descriptions are attached. c. A complete proposed casing and cementing program is attached as per 20 AAC 25.030. d. A summary of the drilling operations. e. A summary of drilling hazards per 20 AAC 25.005 (c) (4). f. A wellbore schematic is also attached visually depicting the proposed well. 3) A copy of the Planned Directional Well Path - including traveling cylinder and development layout plots. The following items are on file with the AOGCC: 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. Alaska Oil & Gas Conservation Commission July 19th, 2010 Page 3 of 3 The following are PNRA's designated contacts for reporting responsibilities to the Commission: 1) Completion Report Vern Johnson, Drilling Superintendent (20 AAC 25.070) 907.343.2111 vern.johnson @pxd.com 2) Geologic Data and Logs Paul Daggett, Senior Staff Geophysicist (20 AAC 25.071) 907.343.2134 paul.daggett @pxd.com The anticipated date for this well to extend past the originally approved (PTD #210-054) depth of 19,455' is approximately July 22nd, 2010. If you have any questions or require further information, please contact Alex Vaughan at 907.343.2186. Sincerely, Ale;.....■vaughan / Operations D filing Engineer Attachments: Form 10-401 Supporting permit information cc: ODSN-16L1 Well File Permit to Drill Well Plan Summary ODSN-16L1 Oooguruk - Nuiqsut Multi-Lateral Production Well Cemented Surface Shoe @ 3,589' MD / 2,988' TVD Cemented Drilling Liner Shoe @ 9,453' MD / 5,244 TVD Intermediate Tie-Back Seals @ 9,262' MD / 5,169' TVD Cemented Intermediate Shoe @ 12,675' MD / 6,185' TVD ODSN-16L1 Lateral Kickoff @ 12,769' MD / 6,202' TVD ODSN-16L1 Lateral TD @ 20,501' MD / 6,151' TVD Surface Location: 2945' FSL, 1167' FEL, Sec 11, T13N, R7E, UM ASP 4 (NAD27)projection X =469831.04 Y= 6031061.18 Target: Oooguruk-Nuiqsut 361' FSL, 4900' FEL, Sec. 10, T13N, R7E, Umiat X =460812.95 Y= 6028521.95 6,202' TVDrkb Bottom Hole Location ODSN-16L1 367' FSL, 5238' FEL, Sec. 4, T13N, R7E, Umiat X =455209.00 Y= 6033837.00 6151' TVDrkb AFE Number: TBA Est. Start Date: July 19th, 2010 Rig: Nabors 19AC Operating days: 10 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) Multi-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:July 19th,2010 ODSN-16L1 Permit To Drill Page 1 of 5 Well Control: 6-1/8"ODSN 16L1 Production Liner Hole Section: • Maximum anticipated BHP: 3135 psi @ 6096'TVD • (Based on 9.8 ppg Oooguruk-Nuiqsut pore pressure) • Maximum surface pressure: 2458 psi @ surface • (Based on BHP and a full column of gas from TD @ 0.11 psi/ft) Maximum casing pressure: 4500 psi @ surface Planned BOP test pressure: 4500 psi (annular to 2500 psi) Due to required 4500 psi casing pressure test. Planned completion fluid: 10.2 ppg Brine/6.8 ppg Diesel • Diverter(see attached schematic)—Note: Requesting Diverter Exemption 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 Disposal: Annular Injection: 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:July 19th,2010 ODSN-16L1 Permit To Drill Page 2 of 5 Drilling Fluids Program: Production Hole Mud Properties: 6-1/8" hole MOBM Interval Density(ppg) Viscosity(secs) YP PV ES HTHP 0/W Initial to TD 7.2 -8.2 ppg 55-80 12 -25 10 -20 800-2000 <6 94/6 (-9.8 ppg via MPD) Formation Markers: Formation Tops MD (ft) TVDrkb (ft) Pore Press. EMW Comments (psi) (ppg) Top Nuiqsut 12304 6141 3129 9.8 Top of Zone 1 Top Second lat 12651 6184 3151 9.8 Second lat TD 20600 6151 3135 9.8 Logging Program: ODSN-16L1 6-1/8"Section: Drilling: Mud logging Dir/GR/Azm Res/PWD • Open Hole: N/A Cased Hole: N/A ODSN-16L1 Casing Program: Hole Casing/ Weight Grade Conn. Casing Csg/Tbg Hole Btm Size Tubing Length Top MDrkb/TVDrkb MDrkb Hydril 7976 12525 20501 6151 6-1/8" 4-1/2" 12.6# L-80 521 Tubing 2-7/8" 6.4# L-80 IBT-BTC 12525 Surface 12525 6163 Casing Properties Size Weight Grade ID Drift Conn. Internal Collapse Tensile Strength ID Yield (psi) __.., (psi) Joint Body 4-1/2" 12.6# L-80 3.958" 3.833" _ Hydril 521 na na 289 M 289 M Pioneer Natural Resources Last Revised:July 19th,2010 ODSN-16L1 Permit To Drill Page 3 of 5 Pioneer Natural Resources Well Plan Summary Drilling Operations Pre-Rig Work 1. 7" intermediate casing string has been set and cemented at 12,675' MD/6,185'TVD. Rig Activity: Drill and Complete ODSN-16L1 1. MU 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 brine pill to drill-in-fluid. 3. RIH to 12,769' MD and kickoff aluminum billet to drill ODSN-16L1. • 4. Drill 6-1/8"ODSN-16L1 lateral production hole to TD. 5. Circulate and condition hole to run liner. 6. POH to intermediate shoe and set heavy weight balance brine 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"solid production liner w/perforated 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 10.2 ppg Brine and POOH. 10. MU and RIH w/2-7/8" production completion w/ ESP, packer, GLM, 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:July 19th,2010 ODSN-16L1 Permit To Drill Page 4 of 5 ODSN-16L1 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. Kick Tolerance/Integrity Testing Kick Tolerance/Integrity Testing Summary Table Casing set/ Maximum Mud Weight Exp Pore Min LOT/FIT Interval Influx Volume Press ODSN-16L1 7" Intermediate/ Infinite 7.2-8.2 ppg 3151 n/a 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 • Sub seismic faults with throws <25' may be encountered. Losses may be associated with these faults. CONSULT THE ODS DATA SHEET FOR ADDITIONAL INFORMATION (still in development) Pioneer Natural Resources Last Revised:July 19th,2010 ODSN-16L1 Permit To Drill Page 5 of 5 16"Conductor • 158'MDrkb/158'TVDrkb t 11-3/4",36508#91_, H , .4 4 35890#L'-80 MD/2yd,,988521'ND 10.772"ID „,,„ .,,t,„ d- Intermediate Tie-Back 7",26#L-80 BTC-M,6.276"ID 9,262'MD/5,169'TVD X9-5/8" 40#L-80 Hydril 521,8.835"ID 9,453'MD/5,244'TVD 1 I Intermediate Liner 7",26#L-80 Hydril 511,6.276"ID 12,675'MD/6,185'TVD Plop&Drop Liner Aluminum Kick-Off Billet 4-1/2", 12.6#L-80 Hydril 521 Liner w/Perforated Pups c00 00 00 00 00 00 00 00 00 00 00 00 00 00 \ , 00 00 00 00 00 00 00 ODSN-16 TD: 18,515'MD/6,147'ND TT Date: Revision By: Comments Q O AI 4/16/2010 Alex Vaughan Proposed ESP Completion Design & ODSN-1 6 �V1 7/19/2010 Alex Vaughan ODSN-16L1 Re Permit ODSN-1 6L1 F i p n CE n n S K r Current Condition 16"Conductor .4 : 158'MDrkb/158'TVDrkb m f Tubing retrievable ScSSSV • Vent Valves Control Line 11-3/4",60#L-80 Hyd 521, 10.772"ID / 3,589'MD/2,988'TVD ■ A. • 2-7/8"x 1W GLM ■ ■ >t 7"x 2-7/8"Gas Vent valve Packer max TVD 3800' 1 2-7/8",6.5#L-80 IBT-BTC Intermediate Tie-Back 7",26#L-80 BTC-M,6.276"ID 9,262'MD/5,169'TVD 9-5/8",40#L-80 Hydril 521,8.835"ID J ■ ■ 14 9,453'MD/5,244'TVD O o O.,4 Automatic Divert Valve(ADV) V ESP(Pump, Motor, &Jewelry Intermediate Liner 7",26#L-80 Hydril 511,6.276"ID 12,675'MD/6,185'TVD Aluminum Kick-Off Billet Sliding Sleeve ODSN-16 TD: 18,515'MD/6,147'TVD ResMan Produced Oil&Water Markers 00 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 5.75"x 4-W Oil Base Swell Packer 4-1/2", 12.6#L-80 Hydril 521 Liner w/Perforated Pups ODSN-16L1 TD:20,501'MD/6,151'TVD . 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(TM OSLO +)yiloAl/() noS L NO(OW Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature • Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp10 Project Oooguruk Development Map System: US State Plane 1927(Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927(NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Site Oooguruk Drill Site Site Position: Northing: 6,031,151.32 ft Latitude: 70°29'46.242 N From: Map Easting: 469,920.45ft Longitude: 150° 14'45.465 W Position Uncertainty: 0.0 ft Slot Radius: in Grid Convergence: -0.23? Well ODSN-16-Slot ODS-16 Well Position +N/-S 0.0 ft Northing: 6,031,061.18 ft • Latitude: 70°29'45.351 N +E/-W 0.0 ft Easting: 469,831.04 ft . Longitude: 150° 14'48.086 W Position Uncertainty 0.0 ft Wellhead Elevation: ft Ground Level: 13.5ft • . .N . Wellbore ODSN-16L1 PN13 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (7) (7) (nT) I IGRF200510 12/31/2009 21.99 80.81 57,759 Design ODSN-16L1 PN13 wp10 Audit Notes: Version: Phase: PLAN Tie On Depth: 12,769.0 Vertical Section: Depth From'( D) +N/-S +E/-W Direction (ft) (ft) (ft) (7) 42.7 0.0 0.0 280.52 7/16/2010 12:30:53PM Page 2 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp10 Plan Sections Measured Vertical TVD Dogleg Build Turn Depth Inclination Azimuth Depth System +N/-S +E/-W Rate Rate Rate Tool Face (ft) (?) (?) (ft) ft (ft) (ft) (?1100ft) (?1100ft) (?/100ft) (?) 12,769.0 82.48 313.03 6,201.7 6,145.5 -2,576.1 -9,008.6 0.00 0.00 0.00 0.00 12,799.0 81.71 312.10 6,205.9 6,149.7 -2,556.0 -9,030.5 4.00 -2.57 -3.10 -130.00 12,920.2 87.14 312.62 6,217.6 6,161.4 -2,474.7 -9,119.6 4.50 4.48 0.43 5.49 12,933.4 87.14 312.62 6,218.3 6,162.1 -2,465.8 -9,129.3 0.00 0.00 0.00 0.00 13,049.7 90.00 308.95 6,221.2 6,165.0 -2,389.8 -9,217.3 4.00 2.46 -3.15 -52.07 13,095.8 91.34 308.60 6,220.7 6,164.5 -2,361.0 -9,253.2 3.00 2.90 -0.76 -14.73 14,061.9 91.34 308.60 6,198.2 6,142.0 -1,758.4 -10,008.1 0.00 0.00 0.00 0.00 14,229.5 90.00 313.45 6,196.2 6,140.0 -1,648.5 -10,134.5 3.00 -0.80 2.89 105.36 14,261.8 89.03 313.44 6,196.5 6,140.3 -1,626.3 -10,157.9 3.00 -3.00 -0.02 -179.52 15,115.5 89.03 313.44 6,210.9 6,154.7 -1,039.4 -10,777.7 0.00 0.00 0.00 0.00 15,150.6 90.00 313.85 6,211.2 6,155.0 -1,015.1 -10,803.1 3.00 2.76 1.18 23.22 15,230.2 92.39 313.85 6,209.5 6,153.3 -960.0 -10,860.5 3.00 3.00 0.00 -0.08 15,541.1 92.39 313.85 6,196.6 6,140.4 -744.8 -11,084.5 0.00 0.00 0.00 0.00 15,550.5 92.29 314.12 6,196.2 6,140.0 -738.3 -11,091.3 3.00 -1.00 2.83 109.56 15,557.5 92.50 314.11 6,195.9 6,139.7 -733.4 -11,096.3 3.00 3.00 -0.11 -2.12 15,966.7 92.50 314.11 6,178.0 6,121.8 -448.9 -11,389.8 0.00 0.00 0.00 0.00 16,050.2 90.00 314.20 6,176.2 6,120.0 -390.7 -11,449.7 3.00 -3.00 0.11 177.88 16,070.5 89.39 314.20 6,176.3 6,120.1 -376.5 -11,464.3 3.00 -3.00 -0.01 -179.89 17,178.1 89.39 314.20 6,188.1 6,131.9 395.6 -12,258.2 0.00 0.00 0.00 0.00 17,198.8 90.00 314.33 6,188.2 6,132.0 410.1 -12,273.0 3.00 2.94 0.60 11.48 17,247.8 91.47 314.33 6,187.6 6,131.4 444.3 -12,308.1 3.00 3.00 0.00 0.00 18,250.5 91.47 314.33 6,161.8 6,105.6 1,144.7 -13,025.2 0.00 0.00 0.00 0.00 18,299.5 90.00 314.33 6,161.2 6,105.0 1,178.9 -13,060.3 3.00 -3.00 0.00 180.00 18,311.8 89.63 314.33 6,161.2 6,105.0 1,187.5 -13,069.0 3.00 -3.00 0.00 180.00 19,387.7 89.63 314.33 6,168.2 6,112.0 1,939.3 -13,838.7 0.00 0.00 0.00 0.00 19,400.0 90.00 314.33 6,168.2 6,112.0 1,947.8 -13,847.5 3.00 3.00 0.00 0.00 19,429.9 90.90 314.33 6,168.0 6,111.8 1,968.7 -13,868.9 3.00 3.00 0.00 0.00 20,500.5 90.90 314.33 6,151.2 6,095.0 2,716.7 -14,634.7 0.00 0.00 0.00 0.00 7/16/2010 12:30:53PM Page 3 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Weilbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp10 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,145.52 • 12,769.0 82.48 313.03 6,201.7 6,145.5 -2,576.1 -9,008.6 6,028,521.95 460,812.95 3.38 8,387.12 Start Dir 4°/100':12769'MD,6201.7'ND:-130°LT TF 12,799.0 81.71 312.10 6,205.9 6,149.7 -2,556.0 -9,030.5 6,028,542.14 460,791.14 4.00 8,412.31 Start Dir 4.5°/100':12799'MD,6205.9'TVD 12,800.0 81.75 312.10 6,206.0 6,149.8 -2,555.3 -9,031.2 6,028,542.80 460,790.41 4.50 8,413.15 12,900.0 86.23 312.53 6,216.5 6,160.3 -2,488.4 -9,104.8 6,028,610.03 460,717.18 4.50 8,497.65 12,920.2 87.14 312.62 6,217.6 6,161.4 -2,474.7 -9,119.6 6,028,623.73 460,702.38 4.50 8,514.74 End Dir:12920.2'MD,6217.6'ND 12,933.4 87.14 312.62 6,218.3 6,162.1 -2,465.8 -9,129.3 6,028,632.70 460,692.72 0.00 8,525.91 Start Dir 4°/100':12933.4'MD,6218.3'ND 13,000.0 88.77 310.52 6,220.7 6,164.5 -2,421.6 -9,179.1 6,028,677.06 460,643.11 4.00 8,582.92 13,049.7 90.00 308.95 6,221.2 6,165.0 -2,389.8 -9,217.3 6,028,709.00 460,605.00 4.00 8,626.33 Start Dir 3°/100':13049.7'MD,6221.2'ND-ODSN-16L1 V10 T1 13,095.8 91.34 308.60 6,220.7 6,164.5 -2,361.0 -9,253.3 6,028,737.98 460,569.22 3.00 8,666.89 End Dir:13095.8'MD,6220.7'ND 13,100.0 91.34 308.60 6,220.6 6,164.4 -2,358.4 -9,256.5 6,028,740.62 460,565.95 0.00 8,670.60 13,200.0 91.34 308.60 6,218.2 6,162.0 -2,296.0 -9,334.7 6,028,803.30 460,488.08 0.00 8,758.80 13,300.0 91.34 308.60 6,215.9 6,159.7 -2,233.6 -9,412.8 6,028,865.98 460,410.21 0.00 8,847.00 13,400.0 91.34 308.60 6,213.6 6,157.4 -2,171.3 -9,490.9 6,028,928.66 460,332.34 0.00 8,935.21 i 13,500.0 91.34 308.60 6,211.2 6,155.0 -2,108.9 -9,569.1 6,028,991.34 460,254.47 0.00 9,023.41 13,600.0 91.34 308.60 6,208.9 6,152.7 -2,046.5 -9,647.2 6,029,054.02 460,176.60 0.00 9,111.61 13,700.0 91.34 308.60 6,206.6 6,150.4 -1,984.2 -9,725.3 6,029,116.70 460,098.73 0.00 9,199.81 13,800.0 91.34 308.60 6,204.3 6,148.1 -1,921.8 -9,803.5 6,029,179.38 460,020.86 0.00 9,288.02 13,900.0 91.34 308.60 6,201.9 6,145.7 -1,859.4 -9,881.6 6,029,242.07 459,942.99 0.00 9,376.22 14,000.0 91.34 308.60 6,199.6 6,143.4 -1,797.0 -9,959.7 6,029,304.75 459,865.12 0.00 9,464.42 14,061.9 91.34 308.60 6,198.2 6,142.0 -1,758.4 -10,008.1 6,029,343.55 459,816.92 0.00 9,519.02 Start Dir 3°/100':14061.9'MD,6198.27VD 14,100.0 91.03 309.70 6,197.4 6,141.2 -1,734.4 -10,037.6 6,029,367.71 459,787.48 3.00 9,552.45 14,200.0 90.24 312.59 6,196.3 6,140.1 -1,668.6 -10,112.9 6,029,433.80 459,712.47 3.00 9,638.48 14,229.5 90.00 313.45 6,196.2 6,140.0 -1,648.5 -10,134.5 6,029,454.00 459,691.00 3.00 9,663.34 ODSN-16L1 V10 T2 14,261.8 89.03 313.44 6,196.5 6,140.3 -1,626.3 -10,157.9 6,029,476.32 459,667.63 3.00 9,690.47 End Dir:14261.8'MD,6196.5'ND 14,300.0 89.03 313.44 6,197.1 6,140.9 -1,600.0 -10,185.7 6,029,502.69 459,640.01 0.00 9,722.53 14,400.0 89.03 313.44 6,198.8 6,142.6 -1,531.3 -10,258.3 6,029,571.72 459,567.69 0.00 9,806.46 14,500.0 89.03 313.44 6,200.5 6,144.3 -1,462.5 -10,330.9 6,029,640.76 459,495.38 0.00 9,890.39 14,600.0 89.03 313.44 6,202.2 6,146.0 -1,393.8 -10,403.5 6,029,709.80 459,423.07 0.00 9,974.31 14,700.0 89.03 313.44 6,203.9 6,147.7 -1,325.0 -10,476.1 6,029,778.83 459,350.75 0.00 10,058.24 14,800.0 89.03 313.44 6,205.6 6,149.4 -1,256.3 -10,548.7 6,029,847.87 459,278.44 0.00 10,142.17 14,900.0 89.03 313.44 6,207.3 6,151.1 -1,187.5 -10,621.3 6,029,916.90 459,206.13 0.00 10,226.10 15,000.0 89.03 313.44 6,209.0 6,152.8 -1,118.8 -10,693.9 6,029,985.94 459,133.82 0.00 10,310.03 ' 15,100.0 89.03 313.44 6,210.6 6,154.4 -1,050.0 -10,766.5 6,030,054.98 459,061.50 0.00 10,393.96 15,115.5 89.03 313.44 6,210.9 6,154.7 -1,039.4 -10,777.7 6,030,065.68 459,050.29 0.00 10,406.96 Start Dir 3°/100':15115.5'MD,6210.9'ND 7/16/2010 12:30:53PM Page 4 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp10 Planned Survey Measured Vertical Map Map ! Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,155.00 15,150.6 90.00 313.85 6,211.2 6,155.0 -1,015.1 -10,803.1 6,030,090.00 459,025.00 3.00 10,436.35 ODSN-16L1 V10 T3 15,200.0 91.48 313.85 6,210.6 6,154.4 -980.9 -10,838.7 6,030,124.36 458,989.52 3.00 10,477.62 15,230.2 92.39 313.85 6,209.5 6,153.3 -960.0 -10,860.5 6,030,145.36 458,967.84 3.00 10,502.84 ■ End Dir:15230.2'MD,6209.5'TVD 15,300.0 92.39 313.85 6,206.6 6,150.4 -911.7 -10,910.8 6,030,193.87 458,917.75 0.00 10,561.10 15,400.0 92.39 313.85 6,202.5 6,146.3 -842.5 -10,982.8 6,030,263.38 458,845.99 0.00 10,644.58 15,500.0 92.39 313.85 6,198.3 6,142.1 -773.2 -11,054.9 6,030,332.88 458,774.23 0.00 10,728.05 15,541.1 92.39 313.85 6,196.6 6,140.4 -744.8 -11,084.5 6,030,361.45 458,744.73 0.00 10,762.36 Start Dir 3°/100':15541.1'MD,6196.6'TVD 15,550.5 92.29 314.12 6,196.2 6,140.0 -738.3 -11,091.3 6,030,368.00 458,738.00 3.01 10,770.20 ODSN-16L1 V10 T3a I 15,557.5 92.50 314.11 6,195.9 6,139.7 -733.4 -11,096.3 6,030,372.89 458,733.00 3.00 10,776.02 End Dir:15557.5'MD,6195.9'TVD 15,600.0 92.50 314.11 6,194.0 6,137.8 -703.9 -11,126.8 6,030,402.56 458,702.64 0.00 10,811.39 15,700.0 92.50 314.11 6,189.7 6,133.5 -634.3 -11,198.5 6,030,472.38 458,631.20 0.00 10,894.61 15,800.0 92.50 314.11 6,185.3 6,129.1 -564.8 -11,270.2 6,030,542.20 458,559.76 0.00 10,977.83 15,900.0 92.50 314.11 6,180.9 6,124.7 -495.2 -11,342.0 6,030,612.02 458,488.32 0.00 11,061.05 15,966.7 92.50 314.11 6,178.0 6,121.8 -448.9 -11,389.8 6,030,658.59 458,440.66 0.00 11,116.55 Start Dir 3°/100':15966.7'MD,6178'TVD 16,000.0 91.51 314.15 6,176.9 6,120.7 -425.7 -11,413.7 6,030,681.86 458,416.87 3.00 11,144.27 16,050.2 90.00 314.20 6,176.2 6,120.0 -390.7 -11,449.7 6,030,717.00 458,381.00 3.00 11,186.07 ODSN-16L1 V10 T4 16,070.5 89.39 314.20 6,176.3 6,120.1 -376.6 -11,464.2 6,030,731.19 458,366.53 3.00 11,202.94 End Dir:16070.5'MD,6176.3'TVD 1 16,100.0 89.39 314.20 6,176.6 6,120.4 -356.0 -11,485.4 6,030,751.84 458,345.47 0.00 11,227.48 16,200.0 89.39 314.20 6,177.7 6,121.5 -286.3 -11,557.1 6,030,821.84 458,274.07 0.00 11,310.69 16,300.0 89.39 314.20 6,178.7 6,122.5 -216.6 -11,628.8 6,030,891.84 458,202.68 0.00 11,393.89 16,400.0 89.39 314.20 6,179.8 6,123.6 -146.8 -11,700.4 6,030,961.83 458,131.28 0.00 11,477.10 16,500.0 89.39 314.20 6,180.9 6,124.7 -77.1 -11,772.1 6,031,031.83 458,059.89 0.00 11,560.30 16,600.0 89.39 314.20 6,181.9 6,125.7 -7.4 -11,843.8 6,031,101.83 457,988.50 0.00 11,643.51 16,700.0 89.39 314.20 6,183.0 6,126.8 62.3 -11,915.5 6,031,171.83 457,917.10 0.00 11,726.71 16,800.0 89.39 314.20 6,184.1 6,127.9 132.0 -11,987.2 6,031,241.83 457,845.71 0.00 11,809.92 16,900.0 89.39 314.20 6,185.1 6,128.9 201.7 -12,058.9 6,031,311.83 457,774.31 0.00 11,893.12 17,000.0 89.39 314.20 6,186.2 6,130.0 271.4 -12,130.5 6,031,381.82 457,702.92 0.00 11,976.33 17,100.0 89.39 314.20 6,187.3 6,131.1 341.2 -12,202.2 6,031,451.82 457,631.53 0.00 12,059.53 17,178.1 89.39 314.20 6,188.1 6,131.9 395.6 -12,258.2 6,031,506.49 457,575.77 0.00 12,124.51 Start Dir 3°/100':17178.1'MD,6188.1'TVD I 17,198.8 90.00 314.33 6,188.2 6,132.0 410.1 -12,273.0 6,031,521.00 457,561.00 3.00 12,141.73 ODSN-16L1 V10 T5 17,200.0 90.04 314.33 6,188.2 6,132.0 410.9 -12,273.9 6,031,521.84 457,560.15 3.00 12,142.72 17,247.8 91.47 314.33 6,187.6 6,131.4 444.3 -12,308.1 6,031,555.37 457,526.10 3.00 12,182.44 End Dir:17247.8'MD,6187.6'TVD 17,300.0 91.47 314.33 6,186.2 6,130.0 480.8 -12,345.4 6,031,591.98 457,488.92 0.00 12,225.79 17,400.0 91.47 314.33 6,183.7 6,127.5 550.6 -12,416.9 6,031,662.11 457,417.69 0.00 12,308.86 7/16/2010 12:30:53PM Page 5 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp10 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,124.90 17,500.0 91.47 314.33 6,181.1 6,124.9 620.5 -12,488.5 6,031,732.25 457,346.47 0.00 12,391.92 17,600.0 91.47 314.33 6,178.5 6,122.3 690.3 -12,560.0 6,031,802.38 457,275.25 0.00 12,474.98 17,700.0 91.47 314.33 6,176.0 6,119.8 760.2 -12,631.5 6,031,872.51 457,204.02 0.00 12,558.04 17,800.0 91.47 314.33 6,173.4 6,117.2 830.0 -12,703.0 6,031,942.64 457,132.80 0.00 12,641.10 17,900.0 91.47 314.33 6,170.8 6,114.6 899.9 -12,774.5 6,032,012.78 457,061.58 0.00 12,724.17 ' 18,000.0 91.47 314.33 6,168.3 6,112.1 969.7 -12,846.0 6,032,082.91 456,990.36 0.00 12,807.23 18,100.0 91.47 314.33 6,165.7 6,109.5 1,039.6 -12,917.5 6,032,153.04 456,919.13 0.00 12,890.29 18,200.0 91.47 314.33 6,163.1 6,106.9 1,109.4 -12,989.1 6,032,223.18 456,847.91 0.00 12,973.35 18,250.5 91.47 314.33 6,161.8 6,105.6 1,144.7 -13,025.2 6,032,258.59 456,811.94 0.00 13,015.30 Start Dir 3°/100':18250.5'MD,6161.8'TVD 18,299.5 90.00 314.33 6,161.2 6,105.0 1,178.9 -13,060.3 6,032,293.00 456,777.00 3.00 13,056.05 ODSN-16L1 V10 T6 18,300.0 89.99 314.33 6,161.2 6,105.0 1,179.3 -13,060.6 6,032,293.32 456,776.68 3.00 13,056.42 18,311.8 89.63 314.33 6,161.2 6,105.0 1,187.5 -13,069.0 6,032,301.60 456,768.27 3.00 13,066.23 End Dir:18311.8'MD,6161.2'TVD 18,400.0 89.63 314.33 6,161.8 6,105.6 1,249.1 -13,132.1 6,032,363.47 456,705.43 0.00 13,139.51 18,500.0 89.63 314.33 6,162.4 6,106.2 1,319.0 -13,203.6 6,032,433.63 456,634.19 0.00 13,222.60 18,600.0 89.63 314.33 6,163.1 6,106.9 1,388.9 -13,275.2 6,032,503.78 456,562.94 0.00 13,305.69 18,700.0 89.63 314.33 6,163.7 6,107.5 1,458.8 -13,346.7 6,032,573.94 456,491.70 0.00 13,388.78 ' 18,800.0 89.63 314.33 6,164.4 6,108.2 1,528.6 -13,418.3 6,032,644.09 456,420.45 0.00 13,471.86 18,900.0 89.63 314.33 6,165.0 6,108.8 1,598.5 -13,489.8 6,032,714.25 456,349.21 0.00 13,554.95 19,000.0 89.63 314.33 6,165.7 6,109.5 1,668.4 -13,561.3 6,032,784.40 456,277.96 0.00 13,638.04 19,100.0 89.63 314.33 6,166.3 6,110.1 1,738.2 -13,632.9 6,032,854.56 456,206.72 0.00 13,721.13 19,200.0 89.63 314.33 6,167.0 6,110.8 1,808.1 -13,704.4 6,032,924.71 456,135.47 0.00 13,804.22 PERMITTED TD-19200'MD(WP02)SEE NOTES 19,300.0 89.63 314.33 6,167.6 6,111.4 1,878.0 -13,775.9 6,032,994.86 456,064.23 0.00 13,887.30 19,387.7 89.63 314.33 6,168.2 6,112.0 1,939.3 -13,838.7 6,033,056.39 456,001.74 0.00 13,960.17 Start Dir 3°/100':19387.7'MD,6168.2'TVD 19,400.0 90.00 314.33 6,168.2 6,112.0 1,947.8 -13,847.5 6,033,065.00 455,993.00 3.00 13,970.37 ODSN-16L1 V10 Geo Poly-ODSN-16L1 V10 T7 19,429.9 90.90 314.33 6,168.0 6,111.8 1,968.7 -13,868.9 6,033,086.00 455,971.68 3.00 13,995.23 End Dir:19429.9'MD,6168'TVD 19,500.0 90.90 314.33 6,166.9 6,110.7 2,017.7 -13,919.0 6,033,135.17 455,921.74 0.00 14,053.47 1 19,600.0 90.90 314.33 6,165.3 6,109.1 2,087.6 -13,990.5 6,033,205.32 455,850.50 0.00 14,136.55 19,700.0 90.90 314.33 6,163.7 6,107.5 2,157.5 -14,062.1 6,033,275.46 455,779.26 0.00 14,219.63 19,800.0 90.90 314.33 6,162.2 6,106.0 2,227.3 -14,133.6 6,033,345.61 455,708.03 0.00 14,302.71 19,900.0 90.90 314.33 6,160.6 6,104.4 2,297.2 -14,205.1 6,033,415.76 455,636.79 0.00 14,385.79 20,000.0 90.90 314.33 6,159.0 6,102.8 2,367.0 -14,276.7 6,033,485.91 455,565.55 0.00 14,468.87 20,100.0 90.90 314.33 6,157.5 6,101.3 2,436.9 -14,348.2 6,033,556.05 455,494.31 0.00 14,551.95 20,200.0 90.90 314.33 6,155.9 6,099.7 2,506.8 -14,419.7 6,033,626.20 455,423.07 0.00 14,635.03 20,300.0 90.90 314.33 6,154.3 6,098.1 2,576.6 -14,491.2 6,033,696.35 455,351.84 0.00 14,718.11 20,400.0 90.90 314.33 6,152.8 6,096.6 2,646.5 -14,562.8 6,033,766.50 455,280.60 0.00 14,801.19 20,500.0 90.90 314.33 6,151.2 6,095.0 2,716.4 -14,634.3 6,033,836.64 455,209.36 0.00 14,884.27 • 20,500.5 90.90 314.33 6,151.2 6,095.0 2,716.7 -14,634.7 6,033,837.00 455,209.00 0.00 14,884.68 Total Depth:20500.5'MD,6151.2'TVD-4 1/2"-ODSN-16L1 V10 T8 7/16/2010 12:30:53PM Page 6 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp10 Targets Target Name -hit/miss target Dip Angle Dip Dir. TVD +N/-S +E/-W Northing Easting -Shape �• /�k t �. ;_, (') (") (ft) (ft) (ft) (ft) (ft) ODSN-16L1 V10 T4 0.00 0.00 6,176.2 -390.7 -11,449.7 6,030,717.00 458,381.00 -plan hits target -Point ODSN-16L1 V10 T8 0.00 0.00 6,151.2 2,716.7 -14,634.7 6,033,837.00 455,209.00 -plan hits target -Point ODSN-16L1 V10 T3 0.00 0.00 6,211.2 -1,015.1 -10,803.1 6,030,090.00 459,025.00 -plan hits target -Point ODSN-16L1 V10 T2 0.00 0.00 6,196.2 -1,648.5 -10,134.5 6,029,454.00 459,691.00 -plan hits target -Point ODSN-16L1 V10 Geo Poly 0.00 0.00 6,221.2 1,947.8 -13,847.5 6,033,065.00 455,993.00 -plan misses by 53.0ft at 19400.0ft MD(6168.2 TVD, 1947.8 N,-13847.5 E) -Polygon Point 1 6,221.2 -2,670.3 -9,139.2 6,028,428.30 460,682.04 Point 2 6,221.2 -2,552.7 -9,276.9 6,028,546.44 460,544.84 Point3 6,221.2 -1,249.8 -10,816.8 6,029,855.45 459,010.39 Point4 6,221.2 -588.3 -11,523.8 6,030,519.75 458,306.15 Point5 6,221.2 188.3 -12,349.6 6,031,299.61 457,483.60 Point6 6,221.2 942.9 -13,150.3 6,032,057.38 456,686.05 Point7 6,221.2 2,176.5 -14,461.2 6,033,296.17 455,380.30 Point 8 6,221.2 2,519.4 -14,825.9 6,033,640.51 455,017.03 Point 9 6,221.2 2,587.5 -14,898.4 6,033,708.89 454,944.81 Point 10 6,221.2 2,587.9 -14,898.7 6,033,709.30 454,944.51 Point 11 6,221.2 2,949.3 -14,548.5 6,034,069.24 455,296.14 j Point 12 6,221.2 2,948.9 -14,548.1 6,034,068.83 455,296.54 Point 13 6,221.2 2,878.1 -14,478.3 6,033,997.76 455,366.04 Point 14 6,221.2 2,877.7 -14,477.9 6,033,997.36 455,366.44 Point 15 6,221.2 2,450.3 -14,056.7 6,033,568.29 455,785.86 Point 16 6,221.2 741.8 -12,370.8 6,031,853.14 457,464.64 Point 17 6,221.2 174.0 -11,807.7 6,031,283.12 458,025.38 Point 18 6,221.2 -744.9 -10,889.8 6,030,360.59 458,939.45 Point 19 6,221.2 -1,442.5 -10,174.9 6,029,660.17 459,651.44 Point20 6,221.2 -1,889.6 -9,650.4 6,029,210.99 460,174.07 Point 21 6,221.2 -2,299.6 -9,145.0 6,028,798.98 460,677.75 Point 22 6,221.2 -2,454.6 -8,977.8 6,028,643.32 460,844.30 Point 23 6,221.2 -2,476.5 -8,956.5 6,028,621.33 460,865.51 Point 24 6,221.2 -2,477.3 -8,955.8 6,028,620.53 460,866.21 ODSN-16L1 V10 T7 0.00 0.00 6,168.2 1,947.8 -13,847.5 6,033,065.00 455,993.00 -plan hits target -Point ODSN-16L1 V10 T1 0.00 0.00 6,221.2 -2,389.8 -9,217.3 6,028,709.00 460,605.00 -plan hits target -Point ODSN-16L1 V10 T6 0.00 0.00 6,161.2 1,178.9 -13,060.3 6,032,293.00 456,777.00 -plan hits target -Point ODSN-16L1 V10 T5 0.00 0.00 6,188.2 410.1 -12,273.0 6,031,521.00 457,561.00 -plan hits target -Point ODSN-16L1 V10 T3a 0.00 0.00 6,196.2 -738.3 -11,091.3 6,030,368.00 458,738.00 -.Ian hits target 7/16/2010 12:30:53PM Page 7 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTONJ Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp10 -Point i Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (in) (in) 1 3,589.0 2,990.8 11 3/4" 11.750 14.500 9,262.1 5,172.1 9 5/8" 9.625 11.750 12,675.0 6,188.2 7" 7.000 9.875 20,500.5 6,151.2 4 1/2" 4.500 6.125 Plan Annotations Measured Vertical Local Coordinates Depth Depth +N/-S +E/-W 1 (ft) (ft) (ft) (ft) Comment 12,769.0 6,201.7 -2,576.1 -9,008.6 Start Dir 4°/100': 12769'MD,6201.7'TVD:-130°LT TF 12,799.0 6,205.9 -2,556.0 -9,030.5 Start Dir 4.5°/100': 12799'MD,6205.9'TVD 12,920.2 6,217.6 -2,474.7 -9,119.6 End Dir: 12920.2'MD,6217.6'TVD 12,933.4 6,218.3 -2,465.8 -9,129.3 Start Dir 4°/100':12933.4'MD,6218.3'TVD 13,049.7 6,221.2 -2,389.9 -9,217.3 Start Dir 3°/100':13049.7'MD,6221.2'TVD 13,095.8 6,220.7 -2,361.0 -9,253.3 End Dir:13095.8'MD,6220.7'TVD 14,061.9 6,198.2 -1,758.4 -10,008.1 Start Dir 3°/100':14061.9'MD,6198.2'TVD 14,261.8 6,196.5 -1,626.3 -10,157.9 End Dir: 14261.8'MD,6196.5'TVD 15,115.5 6,210.9 -1,039.4 -10,777.7 Start Dir 3°/100':15115.5'MD,6210.9'TVD 15,230.2 6,209.5 -960.0 -10,860.5 End Dir: 15230.2'MD,6209.5'TVD 15,541.1 6,196.6 -744.8 -11,084.5 Start Dir 3°/100':15541.1'MD,6196.6'TVD 15,557.5 6,195.9 -733.4 -11,096.3 End Dir: 15557.5'MD,6195.9'TVD 15,966.7 6,178.0 -448.9 -11,389.8 Start Dir 3°/100':15966.7'MD,6178'TVD 16,070.5 6,176.3 -376.6 -11,464.2 End Dir: 16070.5'MD,6176.3'TVD 17,178.1 6,188.1 395.6 -12,258.2 Start Dir 3°/100':17178.1'MD,6188.1'TVD 17,247.8 6,187.6 444.3 -12,308.1 End Dir:17247.8'MD,6187.6'TVD 18,250.5 6,161.8 1,144.7 -13,025.2 Start Dir 3°/100': 18250.5'MD,6161.8'TVD 18,311.8 6,161.2 1,187.5 -13,069.0 End Dir:18311.8'MD,6161.2'TVD 19,200.0 6,167.0 1,808.1 -13,704.4 PERMITTED TD-19200'MD(WP02)SEE NOTES 19,387.7 6,168.2 1,939.3 -13,838.7 Start Dir 3°/100': 19387.7'MD,6168.2'TVD 19,429.9 6,168.0 1,968.7 -13,868.9 End Dir:19429.9'MD,6168'TVD 20,500.5 6,151.2 2,716.7 -14,634.7 Total 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J O c m L.L. O O O co Q O a) +� O O O O al f6 c` c c 2 To' I C d Q W O co 0 O Q >0z —g r o° ° 0- m o 0 L'no. F• . Z O N z D N— i9 . .C+ D 6• a I y O .4._ p" C e 7 0 Q� O a o 777 CO o '10 n o 4, .p 0 0 76 o F> 0 'e o o >> TS o . 4 r L F! 0 0 1S cn 0 m ! o /F O > 0 0 5 Z 7.1 F? o Z r 7 0 ? 4 0 1 70 ° 7 0 )Soir 0 • !0 •A o o e. . 0 8 7 ...47 O 3 0 6 • C C�O f r. o > 0 > n 3 0 g o 2 g —D 170 7m C 0 0 > o mua 0 3S. 0 6 • E. 03 _ `c 0 o J C 7 V � I si 3 0 0 0 ✓ `7 0 ,0 d E 0 7 0 0 sb 0 p (/l O �� • •• •\,e ?e 0 o �' z '''4'o r' : s••,Pqj,,!/ s=s . W IL' Z 0 O G / 2' t p ' : �`•. •• 0 ' - 7 , p 17 .. . f 1 r _ ? 0 S m 2 C7 , J •>r. �G9•••.• •w••••�.�o y a s `i_ o '' ` i�1 SFr w a I m . r OA .1 4 p .�,ri' .r S s __c Co en , _ 1.____ . 1 rr I I Londr)irict i 1 . SE Corner of _+ \�OOOGURUK SITE 0 Protracted Section 11 El n 7 E +c /1 IT CI i 1 N 6028111.04 �� � \� 1 1 E 470589.01 v a vl-254, �,\ ! Ref. AK BLM , - , i • \At ; Harrison. Bay Tract "A" 1P1-24\Q 1 \.t . L .E,U.SLci_ Lewin is j 1∎ \ ` ki " I. 1>i ■ ; 'v' 9. 1 JP212.J t/ % P1 � i Ns'\ i ~� — �� Offshore Iceroas-!,.99 Mies 1 + T!! •PI-'1Z m Pi 20 to Dacevruk Site 1` �\ .. +I a s ;y\ 4. \ :, r - 2 '�4 L v .0 ,i' P1-23` / Pi-1.T. i _ P1-16 111 -.11114. r1, .-Pi-19 lunar° Jeerer DS 3N 6:O R. Road• to iab x y :.1• � PI- .t2 pc DS 3H R r i i 7 e 3N I .V �� ,Pl f7•aorc> + si 112 , . 1 Basis of Location 1 16vc %� ►� �/ ' - DS-3H West Monument » �\ 22 ifs.1 �� Coordinates 1 N 6001016.61 • _ ` �' E 498081.23 .�;.. STAKED PI INFORMATION ONLY p I 1_°'A�` r 4 , Q 1 Ref. Lownsbury & Assoc. D Drawing No. rs-re cr a= cn , ' ---.--T NSK 6.01-d672 .. 1 0* •as 4 , • * , rr!r Y=i '-°�� ` � •.•,../ •••mow•+"_. ... �.J S� jj r+ „may . ;lip G.Da�u 10 4i. =* it PAS y�w••`P�1d +-s:a. S `%.1...16■0+ 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: Basis of Location 05204 2 of 4 State P -$:eal(itTC.irTe Offset - WO - Latitude (N) Longitude kri) X FSL FEL - - - -" I 6,031,151,32 469,92045 70 29 46724160 150 14 4,45408 305 1077 "--2 --6-,-091,14-6-,3-5- 460,05,752 702946:19252- 150 45,6o922 '3030 -%-70132 f.$75o 6;031,141,39 46990 5 70 2-9-4671435-4 160--14-45,75375 -30-25 1-0-81-17----1-31,50 4 6,031,135.46 469,905,67 70 29 46.094a 15014 45,59799 3020 1092-- - 13.50 5 903'1,191.46 70294604538--- 150 144604252 3Q15 1097 -13,50 6 6,031,126 51 469,695,8 -7-o-2945,956a 1$01-4-45-,ftitr.* 3-,-50 469,66313 70 29 45.870$9--- 150144655879 2997 1115 1350 8 5,031,108,73 469,875.21 70 29 45:02102 150 14 0,70303 2992 1120 13.50 9 6,091,10-3.75 489,-87316 70 29 45.77154 150 14 46.84814 2987 1125 19,90 106,031,098.79 469,868,36 • 70 29-4 ,72286 • 150 1446,99170--2962 - 1190- 13,50-- --- 116,031,093.84 469,863.39 70 29 45,67398 150 14 47,13750 2977 1135 - 13,50 .469,6-50.-47- 70 2545,62490 1501-4747;26171-4: 2972 1140 13 6,03f,070,06 469,a.45,81 702948,49840 Th50 1447.65268 2960 1152 13,50 1_4 6,031,071.09 469,840,87 70 29 45.44932 150 14 47,79770 2955 1157 13,50 15 6,031,066.15 469,835 9U 70 29 45,40053 150 14 47,94165 295Q ffTh5o 16 0,031,061.18, 469,831,04 70 2945.3514 150 4,09558-- 2945 1167 13,50 • -- 17 6,031,056,25 469,826.11 70 29-45,90277 150 14-411;i:M542 2940 1172 13.80- 16- 150144,37495 2935 1177 13,-60- -----19 5,031,06,62 469,80-8,50 70345,127-68 15Q144574665 2922 1189 137,50 6,031,03-350 469,60359 702046.07810---1501-4-467$9061 2917 111.04-- 21 6,091,028:53 469,7-0,62 70 2945:0290U 15014 49,can 20-012 119 19,90 -22 6,031,023,58 469,793,67- 7029 44,98014 15014 49,116144 2907 1204 13.50 23 6,0-3-7-1,01$:167 29474, 15014l402547 2902 1209-- 24 6,031,0136-0 ---400,10:1314:7702944,96169 150 144946960 2897 1214 19,50 OF .4 j,911 ...... 1/1 .f$ ",T ÷ . le 1 • 9 T, * •ols" • Philip G.Davis \ NO 41104 - _4 I, . 49 p OX.) 't 4 R 1 SCICI4M-X- 4:1cf1144-1, ‘‘‘. 446111°P • -4' NC)ttg; - 1, devotions ore bused on BP moon Soo Level. _ • 2, Coordinotes ore bused on AIOSk0 Stoic Plane Nod 27, Zone 4, 3, All CPTI(JVCti2r QrC within Protrooted Section 11, Pioneer Ncturol Re5ouce- - -------- - 1OE NAME: Oc,o9uruk Drill site Corldwctors. DRAWN E3Y: BL CHECKED EY: ma) °CATION: Protracted section 11 SCALE: N/A Township 13 North Ronde 7 Cost DATE: 7-12-07 Urniot meridiori NANUQ JOE NO. s HEET ESCRipTioN: As-built CQor !rotes 05204 3 of 4 Alaska State P Section Line Offset Well No. Y Latitude (N) Longitude k FSL FEL Pad Elev. 25 6,031,128.32 469,943.64 70 29 46.01630 150 14 44.77930 3013 1055 13.50 26 6,031,123.35 469,938.69 70 29 45.96722 150 14 44.92442 3008 1060 13.50 27 6,031,118.33 469,933.76 70 29 45.91765 150 14 45.06895 300 1065 13.50 28 6,031,113.39 469,928.86 70 29 45.86887 150 14 45.21260 2997 1070 13.50 29 6,031,108.44 469,923.95 70 29 45.81999 150 14 45.35655 2992 1075 13.50 30 6,031,103.45 469,919.01 70 29 45.77071 150 14 45.50137 2988 1079 13.50 31 6,031,090.65 469,906.38 70 29 45.64431 150 14 45.87163 2975 1092 13.50 32 6,031,085.68 469,901.39 70 29 45.59523 150 14 46.01793 2970 1097 13.50 33 6,031,080.67 469,896.50 70 29 45.54576 150 14 46.16128 2965 1102 13.50 34 6,031,075.73 469,891.57 70 29 45.49698 150 14 46.30581 2960 1106 13.50 35 6,031,070.76 469,886.60 70 29 45.44789 150 14 46.45152 2955 1111 13.50 36 6,031,065.83 469,881.69 70 29 45.39921 150 14 46.59547 2950 1116 13.50 37 6,031,053.00 469,869.00 70 29 45.27251 150 14 46.96749 2937 1129 13.50 38 6,031,047.99 469,864.14 70 29 45.22304 150 14 47.10995 2932 1134 13.50 39 6,031,043.03 469,859.20 70 29 45.17406 150 14 47.25478 2927 1139 13.50 40 6,031,038.10 469,854.21 70 29 45.12537 150 14 47.40108 2922 1144 13.50 41 6,031,033.05 469,849.29 70 29 45.07551 150 14 47.54530 2917 1149 13.50 42 6,031,028.13 469,844.38 70 29 45.02692 150 14 47.68925 2912 1154 13.50 43 6,031,015.46 469,831.70 70 29 44.90180 150 14 48.06099 2899 1166 13.50 44 6,031,010.49 469,826.79 70 29 44.85272 150 14 48.20493 2894 1171 13.50 45 6,031,005.53 469,821.86 70 29 44.80373 150 14 48.34946 2889 1176 13.50 46 6,031,000.54 469,816.94 70 2944.75446 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 QfA >, SURVEYOR'S CERTIFICATE �1P�•'•••~•••••.••q's4-11 I HEREBY CERTIFY THAT I AM or h '� •• V S PROPERLY REGISTERED AND • f�4 .,TH ;-.11 \ ♦` d LICENSED TO PRACTICE LAND S= '_`$ G. "• "° i SURVEYING IN THE STATE OF ./. . ALASKA AND THAT THIS PLAT I s • 1' . 111 G•Dovis • o REPRESENTS A SURVEY DONE BY ..�{ • ME OR UNDER MY SUPERVISION J'j 1• No.1110.3 . e, � �, ',>� �'�l� � •• '`,�- d F� _ °� AND THAT I BELIEVE THAT ALL siZ ,04-•af`nN t�` DIMENSIONS AND OTHER DETAILS i��o������ 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 Umiat Meridian NANUQ JOB NO. SHEET DESCRIPTION: As-built Coordinates 05204 4 of 4 TRANSMITTAL LETTER CHECKLIST WELL NAME L/Ov L( L? e J' /C PTD# v Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: rX POOL: -6C t wL<L— A tf(q., L _ r (�^ � 1 L- Circle Appropriate Letter/Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well f_rG( /& }�j �N ---/ - L/ (If last two digits in API number are Permit No. C% ,�3API No. 50-76)3- 206,26, - �. between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce / inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Non-Conventional Please note the following special condition of this permit: Well production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the Commission to obtain advance approval of such water well testing program. Rev: 1/11/2008 81 1 0 O) 0 C u) d a a) a) 0 a) L LO @ 2 cr a) m - ° (0N- E w a ° a) • C . 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O )' E N � E J E m rn W O 1- a a � c ra a0 a) aw U d Q Q w < (9 Q iL \i SEAN PARNELL,GOVERNOR ALASKA OIL AND GAS 333 W.7th AVENUE,SUITE 100 CONSERVATION COMi►IISSION ANCHORAGE,ALASKA 99501-3539 PHONE (907)279-1433 FAX (907)276-7542 Alex Vaughan Operations Drilling Manager Pioneer Natural Resources Alaska, Inc. 700 G Street, Suite 600 Anchorage, AK 99501 Re: Oooguruk Field, Nuiqsut Oil Pool, ODSN-16L1 Pioneer Natural Resources Alaska, Inc. Permit No: 210-054 Surface Location: 2945' FSL, 1167' FEL, Sec. 11, T13N, R7E, UM Bottomhole Location: 4811' FSL, 4252' FEL, Sec. 9, T13N, R7E, UM Dear Mr. Vaughan: Enclosed is the approved application for permit to re-drill the above referenced development well. The permit is for a new wellbore segment of existing well Oooguruk ODSN-16, Permit No 210-053, API No. 50-703-20620-00. 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, Daniel T. Seamount, Jr. Chair DATED this Z day of April, 2010. cc: Department of Fish & Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) REG IVty STATE OF ALASKA ALf a OIL AND GAS CONSERVATION COMM, ON APR 2 3 2010 PERMIT TO DRILL 20 AAC 25.005 Alaska Oil&Gas Cons.CommissIoti la.Type of Work: 1 b.Proposed Well Class: Development-Oil El • Service- Winj ❑ Single Zone Q • 1 c.SpecifyAI G oposed for: Drill ❑ Redrill El Stratigraphic Test ❑ Development-Gas❑ Service-Supply ❑ Multiple Zone ❑ Coalbed Gas ❑ Gas Hydrates ❑ Re-entry ❑ Exploratory ❑ Service- WAG ❑ Service-Disp ❑ Shale Gas ❑ 2.Operator Name: 5. Bond: Blanket IN Single Well ❑ 11.Well Name and Number: Pioneer Natural Resources Alaska, Inc. Bond No. 103655283 - ODSN-16L1 • 3.Address: 700 G Street,Suite 600 6.Proposed Depth: 12.Field/Pool(s): Anchorage,AK 99501 MD: 19,455' • TVD: 6096' • 4a. Location of Well(Governmental Section): 7.Property Designation(Lease Number): Oooguruk- Nuiqsut Oil Pool• Surface: 2945'FSL, 1167'FEL, Sec. 11,T13N, R7E, UM . ADL 3550367 ADL 355037 Top of Productive Horizon: 8.Land Use Permit: 13.Approximate Spud Date: 5279'FSL,4488'FEL,Sec. 15,T13N, R7E, UM 417497 June 4,2010 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 4811'FSL,4252'FEL,Sec.9,T13N, R7E, UM 5760/5724 5747' 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-469831.04 • y-6031061.18 • Zone-ASP 4 GL Elevation above MSL: to Same Pool:ODSN-40 is 1404' 13.5 feet away •16.Deviated wells: Kickoff depth: 12,475 feet • 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 93.11 degrees Downhole: 3107 • Surface: 2436 • 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 7153' 12,302' 6065' 19,455' 6096' \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 TVD Conductor/Structural 115' 16" Driven 158' 158' . Surface 3339' 11-3/4" 506 sx PF'L';259 sx Class'G' 3382' 3000' Intermediate)-Drip Liner 6228' 9-5/8" 237 sx Class'G' 3232'-9460' 2923'-5208' , Intermediate 2 12409' 7" 227 sx Class'G' 12,452' 6091' Poi..1-ck Liner toil 7' 1,s" '-' 12 H75-I88oL' km.3-/ '4G' Perforation Depth MD(ft): Perforation Depth TVD(ft): q.L2.io 20. Attachments: Property Plat II BOP Sketch❑ Drilling Program el Time v.Depth Plot ❑ Shallow Hazard Analysis❑ Diverter Sketch❑ Seabed Report ❑ Drilling Fluid Program 0 20 AAC 25.050 requirements 21. Verbal Approval: Commission Representative: Date 22. I hereby certify that the foregoing is true and correct. Contact Alex Vaughan,343-2186 Prepared By:Kathy Campoamor,343-2183 Printed Name Alex Vaughan Title Operations Drilling Engineer Signature Phone 343-2186 Date 4/21/2010 Commission Use Only Permit to Drill 7 API Number: Permit Appr See cover letter for other Number: _7-7C(�-�y6' 50- 203"���.6-6O-UL Date: (�\ \ID requirements. Conditions of approval: If box is checked,well may not be used to explore for,test,or produce coalbed methane,g s hydrates,or gas contained in shales: [Y Other: -X- 1-(500 es,.: i3c.� 1 e•5'� Samples req'd: Yes❑ No[� Mud log req'd: Yes ❑ No g 4. 2504. A S` A h iti•Jd t �5 (ri"'"• ) H2S measures: Yes❑ No[✓]' Directional svy req'd: Yes [ No❑ Diver-1-e., I Waiar Q Z Mc., 2 S•G/35Ck)C2J ZF/Z% /P/D APPROVED BY THE COMMISSION / DAT � ' ,COMMISSIONER ORIGINAL 7Y• �d �•z,r/O Form 10-401 (Revised 7/2009) This permit is valid for 24 months from the date of approval(20 AAC 25.006(g)) - Submit in Duplicate PIONEER NATURAL RESOURCES Pioneer Natural Resources Alaska, Inc. 700 G Street, Suite 600 Anchorage,Alaska 99501 Tel: (907)277-2700 Fax: (907)343-2190 April 21, 2010 RECEIVED APR 2 3 2010 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-16 &ODSN-16L1 Surface Location: 2945' FSL, 1167' FEL, Sec 11, T13N, R7E, UM X = 469831.04, Y = 6031061.18, 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 an 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 -3,382' MD /3,000' TVD and set 11-3/4"flush joint casing. • Intermediate Hole 1: o Drill 10-5/8" and under-ream while drilling (UWD) to 11-3/4" to -9,460' MD / 5,208' TVD. Run and set a 9-5/8" Flush Joint Drilling Liner. • Intermediate Hole 2: o Drill 8-1/2" to -12,452' MD / 6,091' TVD and set a 7" Intermediate casing into the top of the Oooguruk-Nuiqsut formation. • ODSN-16 Production Hole: o Drill 6-1/8" horizontally to -18,982' MD / 6,046' TVD and set a 4-1/2" plop-&-drop solid liner with perforated pups. • ODSN-16L1 Production Hole: . o Kick off ODSN-16 lateral @ 12,475' MD /6,095' TVD o Drill 6-1/8" horizontally to -19,455' MD / 6,096' TVD and set a 4-1/2" solid liner with perforated pups. • Completion: o 2-7/8" tubing Alaska Oil & Gas Conservation Commission April 21St, 2010 Page 2 of 3 PNRA will implement Managed Pressure Drilling technology (MPD) while drilling the Intermediate 2 and Production hole sections of ODSN-16 & ODSN-16L1 as outlined below. • From TD of Intermediate 1 until Intermediate 2 TD o Use —9.8-10.5 ppg fluid while using MPD to control pressure from the surface to —12.5 ppg EMW at the bottom of the hole. • Open formations: • Kuparuk Sands, —9.8 ppg Pore Pressure • Nuiqsut Sands, —9.8 ppg Pore Pressure • From the Intermediate 2 Shoe to ODSN-16 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 • From the Intermediate 2 Shoe to ODSN-16L1 TD o Use —7.2-8.2 ppg fluid while using MPD to control pressure from the surface to —9.8-10.2 ppg EMW at the bottom of the hole during connections and while . tripping Utilizing the MPD process described above allows PNRA to reduce the materials needed for the • well, increasing the overall safety of the personnel on the development by handling less material. In addition the lower solids in the production section mud system will reduce formation damage along the sandface of the well. 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. Alaska Oil & Gas Conservation Commission April 21St, 2010 Page 3 of 3 3) A copy of the Planned Directional Well Path - including traveling cylinder and development layout plots. The following items are on file with the AOGCC: 1) A plat showing the surface location proposed for the well per 20 AAC 25.005 (c) (2). 2) Diagrams and descriptions of the BOP and diverter equipment to be used on Nabors Alaska Rig 19-AC as required by 20 AAC 25.035 (b) and (c). 3) A description of the procedure for conducting formation integrity tests per 20 AAC 25.035 (c) (5). 4) PNRA does not anticipate the presence of H2S in the formations to be encountered in this well. However, H2S monitoring equipment as specified in 20 AAC 25.065(1) will be functioning on the rig as standard operating procedure for all wells drilled by that rig. Products for treating H2S contamination in the drilling mud system will be maintained on the ODS. The following are PNRA's designated contacts for reporting responsibilities to the Commission: 1) Completion Report Vern Johnson, Drilling Superintendent (20 AAC 25.070) 907.343.2111 vern.johnson @pxd.com 2) Geologic Data and Logs Paul Daggett, Senior Staff Geophysicist (20 AAC 25.071) 907.343.2134 paul.daggett @pxd.com The anticipated spud date for this well is June 4th, 2010. If you have any questions or require further information, please contact Alex Vaughan at 907.343.2186. Sincerely, r � Alex Vaughan Operations I ling Engineer Attachments: Form 10-401 Supporting permit information cc: ODSN-16 & ODSN-16L1 Well File Permit to Drill Well Plan Summary ODSN-16 & ODSN-16L1 Oooguruk - Nuiqsut Multi-Lateral Production Well Surface TD @ 3,382' MD / 3,000' TVD Drilling Liner TD @ 9,460' MD / 5,208' TVD Intermediate TD @ 12,452' MD / 6,091' TVD ODSN-16 Lateral TD @ 18,982' MD / 6,046' TVD ODSN-16L1 Lateral Kickoff @ 12,475' MD / 6,095' TVD ODSN-16L1 Lateral TD @ 19,455' MD / 6,096' TVD Surface Location: 2945' FSL, 1167' FEL, Sec 11, T13N, R7E, UM • ASP 4 (NAD27)projection X=469831.04 Y=6031061.18 • Target: Oooguruk-Nuiqsut 5279' FSL, 4488' FEL, Sec. 15, T13N, R7E, Umiat X=461226.64 Y=6028136.13 6091' TVDrkb Bottom Hole Location ODSN-16 4482' FSL, 3912' FEL, Sec. 9, T13N, R7E, Umiat X =456533.00 Y= 6032664.00 6046' TVDrkb Bottom Hole Location ODSN-16L1 4811' FSL, 4252' FEL, Sec. 9, T13N, R7E, Umiat • X=456194.00 Y= 6032995.00 6096' TVDrkb AFE Number: TBA Est. Start Date: June 4, 2010 - Rig: Nabors 19AC Operating days: 62 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) Multi-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:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 1 of 12 Well Control: 14-1/2"Surface Section: • Maximum anticipated BHP: 1342 psi @ 3000'TVD (Based on seawater gradient of 0.4472 psi/ft) • Maximum surface pressure: 1012 psi @ surface (Based on BHP and a full column of gas from TD @ 0.11 psi/ft) 10-5/8"x 11-3/4" Drilling Liner Hole Section: • Maximum anticipated BHP: 2329 psi @ 5208'TVD (Based on seawater gradient of 0.4472 psi/ft) • Maximum surface pressure: 1756 psi @ surface (Based on BHP and a full column of gas from TD @ 0.11 psi/ft) 8-1/2" Intermediate Casing Hole Section: • Maximum anticipated BHP: 3104 psi @ 6091'TVD (Based on 9.8 ppg Oooguruk-Kuparuk pore pressure) • Maximum surface pressure: 2434 psi @ surface (Based on BHP and a full column of gas from TD @ 0.11 psi/ft) 6-1/8" ODSN-16 Production Liner Hole Section: • Maximum anticipated BHP: 3081 psi @ 6046'TVD (Based on 9.8 ppg Oooguruk-Nuiqsut pore pressure) • Maximum surface pressure: 2416 psi © surface (Based on BHP and a full column of gas from TD @ 0.11 psi/ft) 6-1/8"ODSN 16L1 Production Liner Hole Section: • Maximum anticipated BHP: 3107 psi @ 6096'TVD • (Based on 9.8 ppg Oooguruk-Nuiqsut pore pressure) • Maximum surface pressure: 2436 psi @ surface (Based on BHP and a full column of gas from TD @ 0.11 psi/ft) Maximum casing pressure: 4500 psi @ surface Planned BOP test pressure: 4500 psi (annular to 2500 psi) Due to required 4500 psi casing pressure test. Planned completion fluid: 10.2 ppg Brine/6.8 ppg Diesel Diverter(see attached schematic)—Note: Requesting Diverter Exemption on a Well by Well Basis): Hydril 21-1/4"2M annular BOP 1 16"full opening knife gate valve, hydraulically actuated 16"diverter line 5000 psi BOP stack(see attached schematic): Hydril GK 11" 5M annular BOP Hydril 11"5M single ram BOP w/studded connections Hydril 11" 5M single ram BOP w/studded connections Drilling cross 11"5M x 11" 5M with 2 ea. 3-1/8" 5M side outlets w/flanged connections 2 ea. 3-1/8"5M full opening inner manual gate valves mounted on drilling cross 2 ea. 3-1/8"5M full opening outer remote hydraulic controlled gate valves mounted on inner gate valves. Hydril 11"5M single ram BOP w/studded connections Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 2 of 12 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: 10-5/8"x 11-3/4" hole LSND Interval Density(ppg) Viscosity(secs) YP PV MBT API FL Initial to TD 9.8 ppg 40-60 15-25 12-20 < 12 8- 10 Intermediate Hole Mud Properties: 8-1/2" hole LSND Interval Density(ppg) Viscosity(secs) YP PV MBT API FL Initial to TD 9.8- 10.5 ppg 50-70 15-25 15-25 < 10 3-5 (-12.5 ppg via (8-10 HTHP) MPD) Production Hole Mud Properties: 6-1/8" hole MOBM Interval Density(ppg) Viscosity(secs) YP PV ES HTHP 0/W Initial to TD 7.2 -8.2 ppg 55-80 12 -25 10 -20 800-2000 <6 94/6 (-9.8 ppg via . MPD) Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 3 of 12 Formation Markers: Pore Press. EMW Formation Tops MD(ft) TVDrkb (ft) (psi) (ppg) Comments Base of Permafrost 1681 1666 Top West Sak 2356 2291 1030 8.65 Base of fluvial sands Tuffaceous Shales 3232 2922 Brook 2b 6794 4254 Top Torok Ss 8799 4972 2236 8.65 Base Torok Ss 9432 5198 Top Hrz 10840 5696 Base Hrz 11257 5827 Kalubik Mkr 11722 5951 Top Kuparuk 11993 6010 Base Kuparuk 12007 6013 3064 9.8 TopNuigsut 12454 6092 3104 9.8 Top of Zone 1 ODSN-16 TD 18982 6046 3081 9.8 _Top Nuigsut Zone 5 13138 6147 3133 9.8 Top of Zone 5 ODSN-16L1 TD 19455 6096 3107 9.8 . Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 4 of 12 Logging Program: 14-1/2"Section: Drilling: Dir/GR Open Hole: N/A Cased Hole: N/A 10-5/8"x 11-3/4" Section: Drilling: Dir/GR Open Hole: N/A Cased Hole: N/A 8-1/2" Section: Drilling: Dir/GR/ Res/Dens/Neut Open Hole: N/A Cased Hole: Bat Sonic ODSN-16 6-1/8" Section: Drilling: Mud logging Dir/GR/Azm Res/ALD/Neut/PWD Open Hole: N/A Cased Hole: ; N/A ODSN-16L1 6-1/8"Section: Drilling: Mud logging Dir/GR/Azm Res/ALD/Neut/PWD Open Hole: N/A Cased Hole: N/A Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 5 of 12 ODSN-16 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 H 3339 Surface 3382 3000 14-1/2" 11-3/4" 60# L-80 52dril Hydril 6228 3232 9460 5208 11-3/4" 9-5/8" 40# L-80 521 8-1/2" 7" 26# L-80 BTC-M 12409 Surface 12452 6091 Hydril 6680 1 18982 6046 6-1/8" 4-1/2" 12.6# L-80 521 124175 i Tubing 2-7/8" 6.4# L-80 IBT-BTC 12259 Surface,, 12302 6065 /,y0.io ODSN-16L1 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 Hydril 3339 Surface 3382 3000 14-1/2" 11-3/4" 60# L-80 521 H 6228 3232 9460 5208 11-3/4" 9-5/8" 40# L-80 52dril 8-1/2" 7" 26# L-80 BTC-M 12409 Surface 12452 6091 Hydril 7153 12302 19455 6096 6-1/8" 4-1/2" 12.6# L-80 521 Tubing 2-7/8" 6.4# L-80 IBT-BTC 12259 Surface 12302 6065 Casing Properties Size Weight Grade ID Drift Conn. Internal Collapse Tensile Strength ID Yield (psi) (psi) Joint Body 16" 109# H-40 14.67" 14.5" Welded Conductor casing 11-3/4" 60# L-80 10.772" 10.62" Hydril 521 5830 3180 1384M 1384M 9-5/8" 40# L-80 8.835' 8.75" Hydril 521 5750 3090 916 M 916 M 7" 26# L-80 6.276" 6.151 BTC-M 7240 5410 604 M 604 M 4-1/2" 12.6# L-80 3.958" 3.833" Hydril 521 na na 289 M 289 M Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 6 of 12 Cement Calculations: Casing Size: 1 11-3/4" Surface Casing-single stage Basis: Lead: 75%excess over gauge hole in permafrost+50 bbls, 30%excess over gauge hole below permafrost Lead TOC: Surface Tail: 500' of open hole with 30% excess, plus 85' shoe track Tail TOC: 2882' MD I Total Cement Volume: Preflush 10 bbl water Spacer 60 bbl 10.0 ppg Dual Spacer Lead 357 bbls/484 sx of 10.92 ppg Type"L" Permafrost Cement. 4.15 cf/sk, 20.0 gps water req. Tail 55 bbls/259 sx of 15.9 ppg Premium "G"+ adds. 1.19 cf/sk, 5.23 gps water req. Displ 362 bbls Mud Temp BHST-55° F, BHCT-60° F estimated Should hole conditions indicate that we will have trouble getting cement to surface, a TAM Port Collar may be run in the casing string and a staged cement job will be performed. In the event that cement is not circulated to surface during the initial surface casing cement job, notify the AOGCC of the upcoming remedial cement work for possible witness of cement to surface. Casing Size: 1 9-5/8" Intermediate 1 -Drilling Liner-single stage Basis: TOC:8750' MD-The greater of 500' MD of open hole or 50' above top of Torok 60% excess, plus 85'shoe track Total Cement Volume: Preflush 10 bbl water Spacer 60 bbl 10 ppg Dual Spacer Primary 57 bbls/271 sx Premium "G" +adds. 1.17 cf/sk Displ 523 bbls mud Temp BHST- 135° F, BHCT-110° F Casing Size: 1 7" Intermediate 2-single stage Basis: TOC: --11,494'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 34 bbls/ 161 sx Premium "G"+adds. 1.17 cf/sk Displ 473 bbls mud Temp BHST- 165° F, BHCT-135° F This well is outside the 1/2 mile radius around the disposal well at the intersection with the Torok disposal zone. Disposal: Annular Infection: Currently not requested, but may be requested in the future. Cuttings Handling: All Class 2 solids will be processed on the Oooguruk Drill Site by the Grind and Inject facility in the Rig Support Complex and injected down the approved Class 1 /Class 2 disposal well, ODSDW1-44. Fluid Handling: All Class 1 and Class 2 fluids will be processed on the Oooguruk Drill Site by the Grind and Inject facility in the Rig Support Complex and injected down the approved Class 1 /Class 2 disposal well, ODSDW1-44. Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 7 of 12 Pioneer Natural Resources Well Plan Summary Drilling Operations Pre-Rig Work 1. 16"Conductors have been set and the Well Bay modules have been placed. Rig Activity: Drill and Complete 1. MIRU Nabors 19AC over pre-installed 16"conductor casing. 2. Nipple up spacer spools and riser. 3. MU 14-1/2" Directional Drilling, MWD/LWD assembly. Drill surface hole to the casing point, making wiper trips as necessary. Circulate and condition the hole to run casing. POOH. 4. Run and cement the 11-3/4"surface casing. Bump the plug and bring the pressure up to 3500 psi—chart and hold for 30 minute pressure test. Send chart to ODE. Note: A Port Collar may be run based on hole conditions at Company Rep discretion. 5. Ensure floats are holding. WOC if needed. 6. ND Riser, NU Drilling Spool and BOPE and test. Test BOPE to 250/4500 psi- Notify AOGCC 48 hours in advance of test. 7. MU 10-5/8"x 11-3/4" RSS, MWD/LWD (BHA will be a 10-5/8" pilot hole opened to 11-3/4"while drilling). 8. RIH and cleanout casing to landing collar. Displace well over to Intermediate 1 drilling fluid. 9. Drill through surface shoe, rathole +20' of new hole and perform LOT to a minimum of 12.5 ppg. 10. Drill 10-5/8"x 11-3/4" Intermediate 1 to casing point. 11. Change one set of pipe rams to 9-5/8"and test BOPE as required. 12. Run 9-5/8"drilling liner on 5" DP. Set liner hanger, release from liner and cement. 13. Bump the plug, increase pressure to 3500 psi and hold pressure for 5 minutes • This will provide a quick integrity test of the 9-5/8" liner • Note the pressure test in the morning report 14. Release pressure and ensure floats are holding • This will check the integrity of the floats to ensure there isn't a flow path through the liner shoe 15. Set liner top packer and test the liner top and the liner top to 3500 psi for 5 minutes • This will check the integrity of the liner top packer to ensure isolation between the liner and the surface casing • Note the pressure test of the liner top in the morning report Note: The surface casing was pressure tested to 3500 psi for 30 minutes prior to drilling out the surface casing shoe 16. POOH w/5" DP. 17. ND Drilling spool, NU BOPE and test to 250/4500 psi - Notify AOGCC 48 hours in advance of test. • Ensure integrity of the liner and the liner top has been verified by a pressure 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:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 8 of 12 ..__.._..._. ._.. • 23. Circulate and condition the well to run 7" intermediate casing. Displace the well over to -12.5 ppg mud for shale stability. RD the MPD bearing assembly and RU MPD trip nipple. POH. 24. Change one set of pipe rams to 7"and test BOPE as required. 25. Run and cement the 7" intermediate casing. 26. Bump the plug and bring the pressure up to 3500 psi-hold for 5 minute pressure test. Release pressure and ensure floats are holding. 27. LD 5" DP 28. Change pipe rams to 4"and test BOPE to 250/4500 psi-Notify AOGCC 48 hours in advance of test. 29. PU 4" DP as needed to TD the Production hole section. 30. MU 6-1/8" RSS, MWD/LWD drilling assembly on 4" DP. RU MPD trip nipple. RIH and cleanout to landing collar. RD MPD trip nipple and RU bearing assembly. 31. Displace to drill-in-fluid for production lateral. 32. Pressure test casing to 3500 psi-chart and hold for 30 minute pressure test. Send chart to ODE. 33. Drill through Intermediate 2 shoe, rathole +20'of new hole and perform FIT to 12.5 ppg. 34. Drill 6-1/8" lateral production hole to TD. 35. Circulate and condition the hole to run liner. 36. POH to intermediate shoe and set heavy weight balance brine pill. Cont POH to surface. 37. Change one set of pipe rams to 4-1/2"and test BOPE as required. 38. RIH w/4-1/2" plop &drop solid production liner w/perforated pups below an aluminum billet for kicking off to drill ODSN-16L1. Kickoff and liner string will run from 12,475'to ODSN-16 TD. • 39. Release from plop&drop liner and aluminum billet. 40. POH to intermediate shoe and set heavy weight balance brine pill. RU MPD trip nipple and POH to surface. 41. MU 6-1/8" RSS, MWD/LWD drilling assembly and RIH to intermediate shoe. RD MPD trip nipple and RU bearing assembly. 42. Displace heavy weight balance brine pill to drill-in-fluid. 43. RIH to 12,475' MD and kickoff aluminum billet to drill ODSN-16L1. 44. Drill 6-1/8" ODSN-16L1 lateral production hole to TD. • 45. Circulate and condition hole to run liner. 46. POH to intermediate shoe and set heavy weight balance brine pill. Cont POH to surface. 47. Change one set of pipe rams to 4-1/2"and test BOPE as required. 48. RIH w/4-1/2"solid production liner w/perforated pups from 150' inside the intermediate shoe to rn) TD. 49. Release from the liner and set the liner top packer. Displace the well over to 10.2 ppg Brine and POOH. 50. MU and RIH w/2-7/8" production completion w/ ESP, packer, GLM, SSSV. 51. Space out, Land the tubing and RILDS. Install TWC. 52. ND BOPE, NU tree and test to 5,000 psi. 53. Pull TWC and reverse circulate corrosion inhibited brine and diesel to freeze protect the well to -2000'TVD and allow to u-tube. 54. 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. 55. RDMO to next well. Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 9 of 12 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:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 10 of 12 Casing Shoe Leak Off Test Procedure: 1. After testing BOPE, pick up the drilling assembly and RIH to the float collar. Circulate to consistent mud weight and rheology. 2. Shut in with the pipe rams and test the casing to the required test pressure. Record the volume of mud required and the corresponding pressures in 1/4 bbl increments. When the design pressure is reached shut in the well and record the shut in pressure for 30 minutes. 3. Bleed off pressure while taking returns to a calibrated tank and record volume recovered. 4. Drill out the shoe track. Drill 20 ft of new hole and circulate the hole clean with consistent mud weight in/out. Pull up into the casing shoe. 5. Perform a Leak Off Test(or Formation Integrity Test): • Calculate the required test pressure to reach leak off (or formation integrity test limit)with the actual mud weight and the estimated fracture EMW. • Plot the casing test data and the calculated leak off on appropriate scale coordinate paper. As a guide, use the data from the casing test to determine the approximate volume of mud required to reach the calculated LOT/FIT. • Shut the well in. R/U the test pump. • Bring the pump on line at 0.25—0.50 bpm. Maintain a constant rate. • Record the pressure for every 1/4 of a bbl pumped. • Continue pumping until the pressure vs. volume curve breaks over indicating leak off. Note: For FIT, do not take to leak off • Discontinue pumping and shut in the well. Record the shut in pressure in 1 minute increments for 10 minutes or until pressure shows stabilization. • Bleed off the pressure and record the volume of mud recovered. • Plot the data to determine the LOT/FIT pressure at the shoe as EMW. • Submit the test results to the Pioneer drilling engineer for distribution as required. Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 11 of 12 ODSN-16&ODSN-16L1 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 Tolerance/Integrity Testing Kick Tolerance/Integrity Testing Summary Table Casing set/ Maximum Mud Weight Exp Pore Min LOT/FIT Interval Influx Volume Press 11-3/4"Surface/ 617 bbls 9.8 ppg 2329 12.5 ppg (LOT) 10-5/8"x 11-3/4" 9-5/8" Drilling Liner/ Infinite 9.8-10.5 ppg 3104 13.5 ppg (FIT), 8-1/2" (12.5 EMW w/MPD) ODSN-16 7.2-8.2 ppg 7" Intermediate/ Infinite (g g_10.2 EMW w/MPD) 3081 12.5 ppg (FIT) 6-1/8" ODSN-16L1 7" Intermediate/ Infinite 7.2-8.2 ppg 3107 n/a 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 • Three seismic faults with expected throws of 20' may be encountered between 8,800'- 16,000' MD. Losses may be associated with these faults. • Sub seismic faults with throws <25' may be encountered. Losses may be associated with these faults. - CONSULT THE ODS DATA SHEET FOR ADDITIONAL INFORMATION (still in development) Pioneer Natural Resources Last Revised:April 21,2010 ODSN-16&ODSN-16L1 Permit To Drill Page 12 of 12 16"Conductor ' 158'MDrkb/158'TVDrkb Tubing retrievable ScSSSV • Vent Valves Control Line 11-3/4",60#L-80 Hyd 521, 10.772"ID 3,382'MD/3,000'TVD 441 N 2-7/8"x 1-W GLM — 7"x 2-7/8"Gas Vent valve Packer max TVD 3800' -II — 2-7/8",6.5#L-80 IBT-BTC Estimated Top of Cement @ 8750'MD,500'MD above Top Torok 9-5/8",40#L-80 Hydril 521,8.835"ID 9,460'MD/5,208'TVD ■ ■ 0 0 0.4 - Automatic Divert Valve(ADV) f ESP(Pump, Motor,&Jewelry I 41 Estimated Top of Cement @11,494'MD,500'MD above the Kuparuk 7",26#L-80 BTC-M,6.276"ID 12,452'MD/6,091'TVD Aluminum Kick-Off Billet Sliding Sleeve ResMan Produced Oil&Water Markers 1 ODSN-16 TD: 18,982'MD/6,046'TVD IA List. 00 00 00 00 I 00 00 00 O 00 00 00 00 00 00 1 100 00 00 00 00 00 00 00 llr,T 00 00 00 00 00 00 00 00 00 ) 00 00 00 00 00 00 00 00 00 ° A 00 00 00 00 00 00 00 00 00 . 5.75"x 4-14 Oil Base Swell Packer 4-1/2", 12.6#L-80 Hydril 521 Liner w/Perforated Pups ODSN-16L1 TD: 19,455'MD/6,096'ND Date: Revision By: Comments P10 N E E R 4/16/2010 Alex Vaughan Proposed ESP Completion Design ODSN-16 & ODSN-16L1 NATURAL RESOURCESAIAStA Proposed Completion Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN-16 - Slot ODS-16 ODSN-16 PN13 Plan: ODSN-16 PN13 wp06 Standard Proposal Report 09 April, 2010 Iitott , ve MINIM �._ .,, �s� . . .. .,II= HALLIBURTON Sperry Drilling Services ❑ O - S dQa F F ~ N cp. 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Well ODSN-16-Slot ODS-16 Well Position +NI-S 0.0 ft Northing: 6,031,061.18 ft Latitude: 70°29'45.351 N +El-W 0.0 ft Easting: 469,831.04 ft Longitude: 150°14'48.086 W Position Uncertainty 0.0 ft Wellhead Elevation: ft Ground Level: 13.5ft Wellbore ODSN-16 PN13 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (?) (?) (nT) IGRF200510 3/7/2007 23.24 80.81 57,644 Design ODSN-16 PN13 wp06 Audit Notes: Version: Phase: PLAN Tie On Depth: 42.7 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (?) 42.7 0.0 0.0 276.64 4/9/2010 10:45:16AM Page 2 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Plan Sections Measured Vertical TVD Dogleg Build Turn Depth Inclination Azimuth Depth System +N/-S +E/-W Rate Rate Rate Tool Face (ft) (?) (?) (ft) ft (ft) (ft) (?/100ft) (?I100ft) (?/100ft) (?) 42.7 0.00 0.00 42.7 -13.5 0.0 0.0 0.00 0.00 0.00 0.00 400.0 0.00 0.00 400.0 343.8 0.0 0.0 0.00 0.00 0.00 0.00 700.0 3.00 295.00 699.9 643.7 3.3 -7.1 1.00 1.00 0.00 295.00 1,116.7 8.00 295.00 1,114.5 1,058.3 20.2 -43.3 1.20 1.20 0.00 0.00 1,650.0 16.00 295.00 1,635.7 1,579.5 67.0 -143.7 1.50 1.50 0.00 0.00 1,664.8 16.00 295.00 1,650.0 1,593.8 68.7 -147.4 0.00 0.00 0.00 0.00 1,768.9 16.00 295.00 1,750.0 1,693.8 80.9 -173.4 0.00 0.00 0.00 0.00 3,330.5 60.00 241.34 2,974.6 2,918.4 -169.6 -1,019.6 3.30 2.82 -3.44 -63.00 3,382.5 61.56 241.34 3,000.0 2,943.8 -191.4 -1,059.4 3.00 3.00 0.00 0.00 3,402.5 61.56 241.34 3,009.5 2,953.3 -199.8 -1,074.9 0.00 0.00 0.00 0.00 3,903.8 69.02 240.30 3,219.0 3,162.8 -421.9 -1,472.2 1.50 1.49 -0.21 -7.42 10,037.0 69.02 240.30 5,414.8 5,358.6 -3,259.2 -6,446.6 0.00 0.00 0.00 0.00 12,134.6 80.00 305.00 6,036.1 5,979.9 -3,139.7 -8,337.2 3.00 0.52 3.08 90.74 12,434.6 80.00 305.00 6,088.2 6,032.0 -2,970.2 -8,579.2 0.00 0.00 0.00 0.00 12,886.3 90.16 314.02 6,127.0 6,070.8 -2,684.3 -8,925.4 3.00 2.25 2.00 41.99 13,911.1 90.16 314.02 6,124.2 6,068.0 -1,972.2 -9,662.4 0.00 0.00 0.00 0.00 13,916.3 90.00 314.03 6,124.2 6,068.0 -1,968.6 -9,666.1 3.00 -2.99 0.20 176.24 13,976.1 91.80 314.03 6,123.3 6,067.1 -1,927.0 -9,709.1 3.00 3.00 0.00 0.01 15,447.7 91.80 314.03 6,077.1 6,020.9 -904.7 -10,766.7 0.00 0.00 0.00 0.00 15,507.6 90.00 314.02 6,076.2 6,020.0 -863.1 -10,809.7 3.00 -3.00 -0.02 -179.67 15,562.7 88.35 314.02 6,077.0 6,020.8 -824.8 -10,849.4 3.00 -3.00 0.00 -179.99 17,238.9 88.35 314.02 6,125.4 6,069.2 339.4 -12,054.2 0.00 0.00 0.00 0.00 17,294.1 90.00 314.05 6,126.2 6,070.0 377.8 -12,093.9 3.00 3.00 0.05 0.94 17,311.1 90.51 314.05 6,126.1 6,069.9 389.6 -12,106.2 3.00 3.00 0.00 0.08 17,614.4 90.51 314.05 6,123.4 6,067.2 600.5 -12,324.1 0.00 0.00 0.00 0.00 17,630.7 91.00 314.02 6,123.2 6,067.0 611.8 -12,335.9 3.00 2.99 -0.18 -3.47 17,708.6 93.33 314.02 6,120.3 6,064.1 665.9 -12,391.8 3.00 3.00 0.00 0.00 18,981.7 93.33 314.02 6,046.2 5,990.0 1,549.0 -13,305.8 0.00 0.00 0.00 0.00 4/9/2010 10:45:16AM Page 3 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) -13.50 42.7 0.00 0.00 42.7 -13.5 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 100.0 0.00 0.00 100.0 43.8 ' 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 200.0 0.00 0.00 200.0 143.8 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 300.0 0.00 0.00 300.0 243.8 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 400.0 0.00 0.00 400.0 343.8 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 Start Dir 1.00/100'400.00'MD,400.00'TVD 500.0 1.00 295.00 500.0 443.8 0.4 -0.8 6,031,061.55 469,830.25 1.00 0.83 600.0 2.00 295.00 600.0 543.8 1.5 -3.2 6,031,062.67 469,827.88 1.00 3.31 700.0 3.00 295.00 699.9 643.7 3.3 -7.1 6,031,064.53 469,823.94 1.00 7.45 Start Dir 1.20/100'700.00'MD,699.90'TVD 800.0 4.20 295.00 799.7 743.5 6.0 -12.8 6,031,067.20 469,818.26 1.20 13.41 900.0 5.40 295.00 899.3 843.1 9.5 -20.4 6,031,070.77 469,810.69 1.20 21.35 1,000.0 6.60 295.00 998.8 942.6 13.9 -29.9 6,031,075.23 469,801.23 1.20 31.27 1,100.0 7.80 295.00 1,098.0 1,041.8 19.2 -41.2 6,031,080.57 469,789.90 1.20 43.17 1,116.7 8.00 295.00 1,114.5 1,058.3 20.2 -43.3 6,031,081.55 469,787.83 1.20 45.34 Start Dir 1.50/100'1116.70'MD,1114.50'TVD 1,200.0 9.25 295.00 1,196.9 1,140.7 25.5 -54.6 6,031,086.87 469,776.52 1.50 57.20 1,300.0 10.75 295.00 1,295.3 1,239.1 32.8 -70.4 6,031,094.27 469,760.82 1.50 73.68 1,400.0 12.25 295.00 1,393.3 1,337.1 41.2 -88.4 6,031,102.77 469,742.79 1.50 92.61 1,500.0 13.75 295.00 1,490.8 1,434.6 50.7 -108.8 6,031,112.36 469,722.44 1.50 113.96 1,600.0 15.25 295.00 1,587.6 1,531.4 61.3 -131.5 6,031,123.03 469,699.79 1.50 137.72 1,650.0 16.00 295.00 1,635.7 1,579.5 67.0 -143.7 6,031,128.77 469,687.61 1.50 150.50 End Dir 1650.00'MD,1635.70'TVD 1,664.8 16.00 295.00 1,650.0 1,593.8 68.7 -147.4 6,031,130.52 469,683.91 0.00 154.38 1,700.0 16.00 295.00 1,683.8 1,627.6 72.8 -156.2 6,031,134.65 469,675.15 0.00 163.58 1,768.9 16.00 295.00 1,750.0 1,693.8 80.9 -173.4 6,031,142.74 469,657.97 0.00 181.60 Start Dir 3.3/100'1768.90'MD,1750.00'TVD 1,800.0 16.49 291.77 1,779.9 1,723.7 84.3 -181.4 6,031,146.22 469,650.00 3.30 189.93 1,900.0 18.36 282.68 1,875.3 1,819.1 93.0 -210.0 6,031,155.06 469,621.48 3.30 219.31 2,000.0 20.59 275.35 1,969.6 1,913.4 98.1 -242.8 6,031,160.29 469,588.63 3.30 252.56 2,100.0 23.06 269.45 2,062.4 2,006.2 99.6 -279.9 6,031,161.89 469,551.54 3.30 289.57 2,200.0 25.71 264.68 2,153.5 2,097.3 97.4 -321.1 6,031,159.86 469,510.35 3.30 330.23 2,300.0 28.48 260.76 2,242.5 2,186.3 91.5 -366.3 6,031,154.20 469,465.18 3.30 374.40 2,355.6 30.07 258.88 2,291.0 2,234.8 86.7 -393.0 6,031,149.50 469,438.43 3.30 400.39 Top West Sak 2,400.0 31.36 257.50 2,329.2 2,273.0 82.1 -415.2 6,031,144.94 469,416.20 3.30 421.92 2,500.0 34.30 254.73 2,413.2 2,357.0 69.0 -467.8 6,031,132.10 469,363.56 3.30 472.65 2,600.0 37.29 252.36 2,494.3 2,438.1 52.4 -523.9 6,031,115.72 469,307.44 3.30 526.42 2,700.0 40.33 250.29 2,572.3 2,516.1 32.3 -583.2 6,031,095.87 469,248.01 3.30 583.05 2,800.0 43.39 248.47 2,646.7 2,590.5 8.8 -645.7 6,031,072.60 469,185.49 3.30 642.34 2,900.0 46.49 246.84 2,717.5 2,661.3 -18.1 -711.0 6,031,045.99 469,120.08 3.30 704.11 3,000.0 49.60 245.38 2,784.4 2,728.2 -48.2 -778.9 6,031,016.14 469,051.99 3.30 768.14 3,100.0 52.73 244.04 2,847.1 2,790.9 -81.5 -849.4 6,030,983.14 468,981.45 3.30 834.23 3,200.0 55.88 242.81 2,905.4 2,849.2 -117.8 -922.0 6,030,947.09 468,908.69 3.30 902.16 4/9/2010 10:45:16AM Page 4 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 2,865.80 3,230.0 56.82 242.46 2,922.0 2,865.8 -129.3 -944.1 6,030,935.72 468,886.49 3.30 922.84 Tuffaceous Shales 3,300.0 59.04 241.67 2,959.2 2,903.0 -157.1 -996.5 6,030,908.13 468,833.96 3.30 971.70 3,330.5 60.00 241.34 2,974.7 2,918.5 -169.7 -1,019.6 6,030,895.68 468,810.81 3.30 993.19 Start Dir 3.0/100'3330.50'MD,2974.70'TVD 3,382.4 61.56 241.34 3,000.0 2,943.8 -191.4 -1,059.4 6,030,874.11 468,770.97 3.00 1,030.17 11 3/4" 3,382.5 61.56 241.34 3,000.0 2,943.8 -191.4 -1,059.5 6,030,874.08 468,770.91 1.18 1,030.23 End Dir 3382.50'MD,3000.00'TVD 3,400.0 61.56 241.34 3,008.4 2,952.2 -198.8 -1,073.0 6,030,866.75 468,757.38 0.00 1,042.79 3,402.5 61.56 241.34 3,009.6 2,953.4 -199.9 -1,074.9 6,030,865.71 468,755.44 0.00 1,044.58 Start Dir 1.50/100'3402.50'MD,3009.60'TVD 3,500.0 63.01 241.13 3,054.9 2,998.7 -241.4 -1,150.6 6,030,824.48 468,679.63 1.50 1,114.93 3,600.0 64.50 240.91 3,099.1 3,042.9 -284.9 -1,229.0 6,030,781.34 468,601.00 1.50 1,187.83 3,700.0 65.99 240.71 3,141.0 3,084.8 -329.1 -1,308.3 6,030,737.38 468,521.55 1.50 1,261.45 3,800.0 67.48 240.51 3,180.5 3,124.3 -374.2 -1,388.3 6,030,692.62 468,441.34 1.50 1,335.74 3,900.0 68.96 240.31 3,217.6 3,161.4 -420.1 -1,469.1 6,030,647.10 468,360.42 1.50 1,410.64 3,903.8 69.02 240.30 3,219.0 3,162.8 -421.9 -1,472.2 6,030,645.34 468,357.31 1.50 1,413.52 3,903.9 69.02 240.30 3,219.0 3,162.8 -421.9 -1,472.2 6,030,645.31 468,357.25 0.00 1,413.58 End Dir 3903.90'MD,3219.00'TVD 4,000.0 69.02 240.30 3,253.4 3,197.2 -466.3 -1,550.2 6,030,601.17 468,279.14 0.00 1,485.85 4,100.0 69.02 240.30 3,289.2 3,233.0 -512.6 -1,631.3 6,030,555.25 468,197.85 0.00 1,561.07 4,200.0 69.02 240.30 3,325.0 3,268.8 -558.9 -1,712.4 6,030,509.32 468,116.57 0.00 1,636.28 4,300.0 69.02 240.30 3,360.8 3,304.6 -605.1 -1,793.5 6,030,463.39 468,035.28 0.00 1,711.49 4,400.0 69.02 240.30 3,396.6 3,340.4 -651.4 -1,874.6 6,030,417.46 467,954.00 0.00 1,786.70 4,500.0 69.02 240.30 3,432.4 3,376.2 -697.7 -1,955.7 6,030,371.54 467,872.71 0.00 1,861.92 4,600.0 69.02 240.30 3,468.2 3,412.0 -743.9 -2,036.8 6,030,325.61 467,791.43 0.00 1,937.13 4,700.0 69.02 240.30 3,504.0 3,447.8 -790.2 -2,117.9 6,030,279.68 467,710.14 0.00 2,012.34 4,800.0 69.02 240.30 3,539.8 3,483.6 -836.4 -2,199.0 6,030,233.76 467,628.86 0.00 2,087.55 4,900.0 69.02 240.30 3,575.6 3,519.4 -882.7 -2,280.1 6,030,187.83 467,547.58 0.00 2,162.76 5,000.0 69.02 240.30 3,611.4 3,555.2 -929.0 -2,361.2 6,030,141.90 467,466.29 0.00 2,237.98 5,100.0 69.02 240.30 3,647.2 3,591.0 -975.2 -2,442.3 6,030,095.97 467,385.01 0.00 2,313.19 5,200.0 69.02 240.30 3,683.0 3,626.8 -1,021.5 -2,523.4 6,030,050.05 467,303.72 0.00 2,388.40 5,300.0 69.02 240.30 3,718.8 3,662.6 -1,067.7 -2,604.6 6,030,004.12 467,222.44 0.00 2,463.61 5,400.0 69.02 240.30 3,754.6 3,698.4 -1,114.0 -2,685.7 6,029,958.19 467,141.15 0.00 2,538.83 5,500.0 69.02 240.30 3,790.4 3,734.2 -1,160.3 -2,766.8 6,029,912.27 467,059.87 0.00 2,614.04 5,600.0 69.02 240.30 3,826.2 3,770.0 -1,206.5 -2,847.9 6,029,866.34 466,978.58 0.00 2,689.25 5,700.0 69.02 240.30 3,862.0 3,805.8 -1,252.8 -2,929.0 6,029,820.41 466,897.30 0.00 2,764.46 5,800.0 69.02 240.30 3,897.8 3,841.6 -1,299.1 -3,010.1 6,029,774.49 466,816.01 0.00 2,839.68 5,900.0 69.02 240.30 3,933.6 3,877.4 -1,345.3 -3,091.2 6,029,728.56 466,734.73 0.00 2,914.89 6,000.0 69.02 240.30 3,969.4 3,913.2 -1,391.6 -3,172.3 6,029,682.63 466,653.44 0.00 2,990.10 6,100.0 69.02 240.30 4,005.2 3,949.0 -1,437.8 -3,253.4 6,029,636.70 466,572.16 0.00 3,065.31 6,200.0 69.02 240.30 4,041.0 3,984.8 -1,484.1 -3,334.5 6,029,590.78 466,490.88 0.00 3,140.52 6,300.0 69.02 240.30 4,076.8 4,020.6 -1,530.4 -3,415.6 6,029,544.85 466,409.59 0.00 3,215.74 6,400.0 69.02 240.30 4,112.6 4,056.4 -1,576.6 -3,496.7 6,029,498.92 466,328.31 0.00 3,290.95 4/9/2010 10:45:16AM Page 5 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTONJ Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 4,092.25 6,500.0 69.02 240.30 4,148.4 4,092.2 -1,622.9 -3,577.8 6,029,453.00 466,247.02 0.00 3,366.16 6,600.0 69.02 240.30 4,184.3 , 4,128.1 -1,669.1 -3,658.9 6,029,407.07 466,165.74 0.00 3,441.37 6,700.0 69.02 240.30 4,220.1 4,163.9 -1,715.4 -3,740.0 6,029,361.14 466,084.45 0.00 3,516.59 6,794.8 69.02 240.30 4,254.0 4,197.8 -1,759.3 -3,816.9 6,029,317.59 466,007.38 0.00 3,587.90 Brook 2B 6,800.0 69.02 240.30 4,255.9 4,199.7 -1,761.7 -3,821.1 6,029,315.22 466,003.17 0.00 3,591.80 6,900.0 69.02 240.30 4,291.7 4,235.5 -1,807.9 -3,902.2 6,029,269.29 465,921.88 0.00 3,667.01 7,000.0 69.02 240.30 4,327.5 4,271.3 -1,854.2 -3,983.4 6,029,223.36 465,840.60 0.00 3,742.22 7,100.0 69.02 240.30 4,363.3 4,307.1 -1,900.4 -4,064.5 6,029,177.43 465,759.31 0.00 3,817.44 7,200.0 69.02 240.30 4,399.1 4,342.9 -1,946.7 -4,145.6 6,029,131.51 465,678.03 0.00 3,892.65 7,300.0 69.02 240.30 4,434.9 4,378.7 -1,993.0 -4,226.7 6,029,085.58 465,596.74 0.00 3,967.86 7,400.0 69.02 240.30 4,470.7 4,414.5 -2,039.2 -4,307.8 6,029,039.65 465,515.46 0.00 4,043.07 7,500.0 69.02 240.30 4,506.5 4,450.3 -2,085.5 -4,388.9 6,028,993.73 465,434.18 0.00 4,118.28 7,600.0 69.02 240.30 4,542.3 4,486.1 -2,131.8 -4,470.0 6,028,947.80 465,352.89 0.00 4,193.50 7,700.0 69.02 240.30 4,578.1 4,521.9 -2,178.0 -4,551.1 6,028,901.87 465,271.61 0.00 4,268.71 7,800.0 69.02 240.30 4,613.9 4,557.7 -2,224.3 -4,632.2 6,028,855.94 465,190.32 0.00 4,343.92 7,900.0 69.02 240.30 4,649.7 4,593.5 -2,270.5 -4,713.3 6,028,810.02 465,109.04 0.00 4,419.13 8,000.0 69.02 240.30 4,685.5 4,629.3 -2,316.8 -4,794.4 6,028,764.09 465,027.75 0.00 4,494.35 8,100.0 69.02 240.30 4,721.3 4,665.1 -2,363.1 -4,875.5 6,028,718.16 464,946.47 0.00 4,569.56 8,200.0 69.02 240.30 4,757.1 4,700.9 -2,409.3 -4,956.6 6,028,672.24 464,865.18 0.00 4,644.77 8,300.0 69.02 240.30 4,792.9 4,736.7 -2,455.6 -5,037.7 6,028,626.31 464,783.90 0.00 4,719.98 8,400.0 69.02 240.30 4,828.7 4,772.5 -2,501.8 -5,118.8 6,028,580.38 464,702.61 0.00 4,795.19 8,500.0 69.02 240.30 4,864.5 4,808.3 -2,548.1 -5,199.9 6,028,534.46 464,621.33 0.00 4,870.41 8,600.0 69.02 240.30 4,900.3 4,844.1 -2,594.4 -5,281.0 6,028,488.53 464,540.04 0.00 4,945.62 8,700.0 69.02 240.30 4,936.1 4,879.9 -2,640.6 -5,362.1 6,028,442.60 464,458.76 0.00 5,020.83 8,800.0 69.02 240.30 4,971.9 4,915.7 -2,686.9 -5,443.3 6,028,396.67 464,377.48 0.00 5,096.04 8,800.3 69.02 240.30 4,972.0 4,915.8 -2,687.0 -5,443.5 6,028,396.53 464,377.22 0.00 5,096.28 Torok Ss 8,900.0 69.02 240.30 5,007.7 4,951.5 -2,733.2 -5,524.4 6,028,350.75 464,296.19 0.00 5,171.26 9,000.0 69.02 240.30 5,043.5 4,987.3 -2,779.4 -5,605.5 6,028,304.82 464,214.91 0.00 5,246.47 9,100.0 69.02 240.30 5,079.3 5,023.1 -2,825.7 -5,686.6 6,028,258.89 464,133.62 0.00 5,321.68 9,200.0 69.02 240.30 5,115.1 5,058.9 -2,871.9 -5,767.7 6,028,212.97 464,052.34 0.00 5,396.89 9,300.0 69.02 240.30 5,150.9 5,094.7 -2,918.2 -5,848.8 6,028,167.04 463,971.05 0.00 5,472.11 9,400.0 69.02 240.30 5,186.7 5,130.5 -2,964.5 -5,929.9 6,028,121.11 463,889.77 0.00 5,547.32 9,431.6 69.02 240.30 5,198.0 5,141.8 -2,979.1 -5,955.5 6,028,106.61 463,864.11 0.00 5,571.06 Base Torok Sand 9,459.5 69.02 240.30 5,208.0 5,151.8 -2,992.0 -5,978.1 6,028,093.79 463,841.40 0.00 5,592.07 9 5/8" 9,500.0 69.02 240.30 5,222.5 5,166.3 -3,010.7 -6,011.0 6,028,075.18 463,808.48 0.00 5,622.53 9,600.0 69.02 240.30 5,258.3 5,202.1 -3,057.0 -6,092.1 6,028,029.26 463,727.20 0.00 5,697.74 9,700.0 69.02 240.30 5,294.1 5,237.9 -3,103.2 -6,173.2 6,027,983.33 463,645.91 0.00 5,772.95 9,800.0 69.02 240.30 5,329.9 5,273.7 -3,149.5 -6,254.3 6,027,937.40 463,564.63 0.00 5,848.17 9,900.0 69.02 240.30 5,365.7 5,309.5 -3,195.8 -6,335.4 6,027,891.48 463,483.35 0.00 5,923.38 10,000.0 69.02 240.30 5,401.5 5,345.3 -3,242.0 -6,416.5 6,027,845.55 463,402.06 0.00 5,998.59 4/9/2010 10:45:16AM Page 6 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTONJ Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 5,358.55 10,037.0 69.02 240.30 5,414.8 5,358.6 -3,259.1 -6,446.5 6,027,828.56 463,371.99 0.00 6,026.42 Start Dir 3.0/100'10037.00'MD,5414.80'TVD 10,100.0 69.01 242.32 5,437.3 5,381.1 -3,287.4 -6,498.1 6,027,800.53 463,320.28 3.00 6,074.41 10,200.0 69.04 245.54 5,473.1 5,416.9 -3,328.4 -6,582.0 6,027,759.85 463,236.26 3.00 6,152.96 10,300.0 69.13 248.75 5,508.8 5,452.6 -3,364.7 -6,668.0 6,027,723.92 463,150.06 3.00 6,234.25 10,400.0 69.28 251.95 5,544.3 5,488.1 -3,396.1 -6,756.1 6,027,692.85 463,061.92 3.00 6,318.05 10,500.0 69.49 255.15 5,579.6 5,523.4 -3,422.6 -6,845.8 6,027,666.72 462,972.07 3.00 6,404.13 10,600.0 69.75 258.34 5,614.4 5,558.2 -3,444.1 -6,937.1 6,027,645.61 462,880.77 3.00 6,492.26 10,700.0 70.08 261.51 5,648.8 5,592.6 -3,460.5 -7,029.5 6,027,629.56 462,788.25 3.00 6,582.20 10,800.0 70.46 264.67 5,682.5 5,626.3 -3,471.8 -7,122.9 6,027,618.62 462,694.79 3.00 6,673.69 10,840.5 70.63 265.95 5,696.0 5,639.8 -3,475.0 -7,161.0 6,027,615.66 462,656.75 3.00 6,711.10 Top HRZ 10,900.0 70.89 267.82 5,715.6 5,659.4 -3,478.0 -7,217.1 6,027,612.83 462,600.62 3.00 6,766.50 11,000.0 71.38 270.95 5,748.0 5,691.8 -3,479.0 -7,311.7 6,027,612.21 462,506.02 3.00 6,860.36 11,100.0 71.92 274.06 5,779.4 5,723.2 -3,474.9 -7,406.5 6,027,616.74 462,411.24 3.00 6,955.01 11,200.0 72.51 277.15 5,810.0 5,753.8 -3,465.6 -7,501.3 6,027,626.42 462,316.53 3.00 7,050.20 11,257.1 72.87 278.90 5,827.0 5,770.8 -3,458.0 -7,555.3 6,027,634.25 462,262.55 3.00 7,104.74 Base HRZ 11,300.0 73.15 280.21 5,839.5 5,783.3 -3,451.2 -7,595.7 6,027,641.22 462,222.17 3.00 7,145.67 11,400.0 73.83 283.26 5,868.0 5,811.8 -3,431.7 -7,689.6 6,027,661.11 462,128.40 3.00 7,241.15 11,500.0 74.55 286.29 5,895.2 5,839.0 -3,407.1 -7,782.6 6,027,686.02 462,035.49 3.00 7,336.39 11,600.0 75.32 289.29 5,921.2 5,865.0 -3,377.6 -7,874.5 6,027,715.89 461,943.69 3.00 7,431.11 11,700.0 76.12 292.27 5,945.9 5,889.7 -3,343.2 -7,965.1 6,027,750.64 461,853.25 3.00 7,525.07 11,721.5 76.30 292.91 5,951.0 5,894.8 -3,335.2 -7,984.4 6,027,758.75 461,833.98 3.00 7,545.17 Kalubik Marker 11,800.0 76.96 295.24 5,969.1 5,912.9 -3,304.1 -8,054.1 6,027,790.17 461,764.41 3.00 7,618.01 11,900.0 77.84 298.18 5,991.0 5,934.8 -3,260.2 -8,141.3 6,027,834.38 461,677.43 3.00 7,709.66 11,993.5 78.68 300.91 6,010.0 5,953.8 -3,215.1 -8,220.9 6,027,879.83 461,598.00 3.00 7,793.98 Top Kup C 12,000.0 78.74 301.10 6,011.3 5,955.1 -3,211.8 -8,226.4 6,027,883.14 461,592.54 3.00 7,799.78 12,008.9 78.82 301.36 6,013.0 5,956.8 -3,207.3 -8,233.8 6,027,887.68 461,585.12 3.00 7,807.70 Base Kuparuk(LCU) 12,100.0 79.67 304.00 6,030.0 5,973.8 -3,158.9 -8,309.1 6,027,936.31 461,509.98 3.00 7,888.13 12,134.6 80.00 305.00 6,036.1 5,979.9 -3,139.6 -8,337.2 6,027,955.72 461,481.99 3.00 7,918.24 End Dir 12134.60'MD,6036.10'TVD 12,200.0 80.00 305.00 6,047.5 5,991.3 -3,102.7 -8,390.0 6,027,992.87 461,429.39 0.00 7,974.91 12,289.4 80.00 305.00 6,063.0 6,006.8 -3,052.2 -8,462.1 6,028,043.68 461,357.45 0.00 8,052.43 BCU 12,300.0 80.00 305.00 6,064.8 6,008.6 -3,046.2 -8,470.6 6,028,049.68 461,348.96 0.00 8,061.58 12,400.0 80.00 305.00 6,082.2 6,026.0 -2,989.7 -8,551.3 6,028,106.48 461,268.53 0.00 8,148.24 12,434.5 80.00 305.00 6,088.2 6,032.0 -2,970.2 -8,579.1 6,028,126.08 461,240.78 0.00 8,178.13 Start Dir 3.0/100'12434.50'MD,6088.20'TVD 12,434.6 80.00 305.00 6,088.2 6,032.0 -2,970.2 -8,579.2 6,028,126.12 461,240.72 0.00 8,178.19 PN11 v6 T1 4/9/2010 10:45:16AM Page 7 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,034.99 12,452.1 80.39 305.36 6,091.2 6,035.0 -2,960.2 -8,593.3 6,028,136.13 461,226.64 3.00 8,193.37 7" 12,457.0 80.50 305.46 6,092.0 6,035.8 -2,957.4 -8,597.3 6,028,138.95 461,222.71 3.00 8,197.61 Top Nuiqsut 12,500.0 81.46 306.33 6,098.7 6,042.5 -2,932.5 -8,631.7 6,028,163.98 461,188.42 3.00 8,234.66 12,600.0 83.70 308.34 6,111.6 6,055.4 -2,872.4 -8,710.5 6,028,224.43 461,109.84 3.00 8,319.92 12,700.0 85.95 310.33 6,120.7 6,064.5 -2,809.3 -8,787.5 6,028,287.85 461,033.08 3.00 8,403.72 12,800.0 88.21 312.31 6,125.8 6,069.6 -2,743.4 -8,862.5 6,028,354.09 460,958.36 3.00 8,485.84 12,886.2 90.15 314.02 6,127.0 6,070.8 -2,684.4 -8,925.4 6,028,413.29 460,895.75 3.00 8,555.09 End Dir 12886.20'MD,6127.00'TVD 12,886.3 90.16 314.02 6,127.0 6,070.8 -2,684.3 -8,925.4 6,028,413.36 460,895.68 3.00 8,555.17 12,900.0 90.16 314.02 6,127.0 6,070.8 -2,674.8 -8,935.3 6,028,422.92 460,885.86 0.00 8,566.06 13,000.0 90.16 314.02 6,126.7 6,070.5 -2,605.3 -9,007.2 6,028,492.70 460,814.24 0.00 8,645.52 13,100.0 90.16 314.02 6,126.4 6,070.2 -2,535.8 -9,079.1 6,028,562.47 460,742.62 0.00 8,724.99 13,200.0 90.16 314.02 6,126.1 6,069.9 -2,466.3 -9,151.0 6,028,632.24 460,671.00 0.00 8,804.45 13,300.0 90.16 314.02 6,125.9 6,069.7 -2,396.9 -9,222.9 6,028,702.01 460,599.38 0.00 8,883.92 13,400.0 90.16 314.02 6,125.6 6,069.4 -2,327.4 -9,294.9 6,028,771.79 460,527.75 0.00 8,963.38 13,500.0 90.16 314.02 6,125.3 6,069.1 -2,257.9 -9,366.8 6,028,841.56 460,456.13 0.00 9,042.85 13,600.0 90.16 314.02 6,125.1 6,068.9 -2,188.4 -9,438.7 6,028,911.33 460,384.51 0.00 9,122.31 13,700.0 90.16 314.02 6,124.8 6,068.6 -2,118.9 -9,510.6 6,028,981.11 460,312.89 0.00 9,201.77 13,800.0 90.16 314.02 6,124.5 6,068.3 -2,049.4 -9,582.5 6,029,050.88 460,241.27 0.00 9,281.24 13,900.0 90.16 314.02 6,124.2 6,068.0 -1,979.9 -9,654.4 6,029,120.65 460,169.65 0.00 9,360.70 13,911.0 90.16 314.02 6,124.2 6,068.0 -1,972.3 -9,662.3 6,029,128.33 460,161.77 0.00 9,369.44 Start Dir 3.0/100'13911.00'MD,6124.20'TVD 13,911.1 90.16 314.02 6,124.2 6,068.0 -1,972.2 -9,662.4 6,029,128.37 460,161.72 0.00 9,369.50 13,916.3 90.00 314.03 6,124.2 6,068.0 -1,968.6 -9,666.1 6,029,132.00 460,158.00 3.00 9,373.62 PN11 v6 T2 13,976.1 91.80 314.03 6,123.3 6,067.1 -1,927.0 -9,709.1 6,029,173.75 460,115.16 3.00 9,421.16 End Dir 13976.10'MD,6123.30'TVD 14,000.0 91.80 314.03 6,122.5 6,066.3 -1,910.4 -9,726.3 6,029,190.42 460,098.05 0.00 9,440.14 14,100.0 91.80 314.03 6,119.4 6,063.2 -1,841.0 -9,798.2 6,029,260.17 460,026.48 0.00 9,519.55 14,200.0 91.80 314.03 6,116.2 6,060.0 -1,771.5 -9,870.0 6,029,329.93 459,954.90 0.00 9,598.97 14,300.0 91.80 314.03 6,113.1 6,056.9 -1,702.0 -9,941.9 6,029,399.68 459,883.33 0.00 9,678.38 14,400.0 91.80 314.03 6,110.0 6,053.8 -1,632.6 -10,013.8 6,029,469.43 459,811.76 0.00 9,757.80 14,500.0 91.80 314.03 6,106.8 6,050.6 -1,563.1 -10,085.6 6,029,539.18 459,740.18 0.00 9,837.21 14,600.0 91.80 314.03 6,103.7 6,047.5 -1,493.6 -10,157.5 6,029,608.93 459,668.61 0.00 9,916.63 14,700.0 91.80 314.03 6,100.6 6,044.4 -1,424.2 -10,229.3 6,029,678.69 459,597.03 0.00 9,996.04 14,800.0 91.80 314.03 6,097.4 6,041.2 -1,354.7 -10,301.2 6,029,748.44 459,525.46 0.00 10,075.46 14,900.0 91.80 314.03 6,094.3 6,038.1 -1,285.2 -10,373.1 6,029,818.19 459,453.89 0.00 10,154.87 15,000.0 91.80 314.03 6,091.2 6,035.0 -1,215.8 -10,444.9 6,029,887.94 459,382.31 0.00 10,234.28 15,100.0 91.80 314.03 6,088.0 6,031.8 -1,146.3 -10,516.8 6,029,957.69 459,310.74 0.00 10,313.70 15,200.0 91.80 314.03 6,084.9 6,028.7 -1,076.8 -10,588.7 6,030,027.45 459,239.17 0.00 10,393.11 15,300.0 91.80 314.03 6,081.8 6,025.6 -1,007.4 -10,660.5 6,030,097.20 459,167.59 0.00 10,472.53 15,400.0 91.80 314.03 6,078.6 6,022.4 -937.9 -10,732.4 6,030,166.95 459,096.02 0.00 10,551.94 4/9/2010 10:45:16AM Page 8 COMPASS 2003.16 Build 428 Halliburton Company HALLIBUR'TON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +14/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,020.94 15,447.6 91.80 314.03 6,077.1 6,020.9 -904.8 -10,766.6 6,030,200.15 459,061.95 0.00 10,589.74 Start Dir 3.0/100'15447.60'MD,6077.10'TVD 15,447.7 91.80 314.03 6,077.1 6,020.9 -904.7 -10,766.7 6,030,200.23 459,061.87 0.00 10,589.83 15,500.0 90.23 314.02 6,076.2 6,020.0 -868.4 -10,804.3 6,030,236.71 459,024.43 3.00 10,631.37 15,507.6 90.00 314.02 6,076.2 6,020.0 -863.1 -10,809.7 6,030,242.00 459,019.00 3.00 10,637.40 PN11 v6 T3 15,562.7 88.35 314.02 6,077.0 6,020.8 -824.8 -10,849.3 6,030,280.45 458,979.53 3.00 10,681.19 End Dir 15562.70'MD,6077.00'TVD 15,600.0 88.35 314.02 6,078.1 6,021.9 -798.9 -10,876.2 6,030,306.47 458,952.82 0.00 10,710.82 15,700.0 88.35 314.02 6,081.0 6,024.8 -729.5 -10,948.0 6,030,376.21 458,881.23 0.00 10,790.25 15,800.0 88.35 314.02 6,083.8 6,027.6 -660.0 -11,019.9 6,030,445.96 458,809.64 0.00 10,869.68 15,900.0 88.35 314.02 6,086.7 6,030.5 -590.6 -11,091.8 6,030,515.70 458,738.05 0.00 10,949.11 16,000.0 88.35 314.02 6,089.6 6,033.4 -521.1 -11,163.7 6,030,585.44 458,666.46 0.00 11,028.54 16,100.0 88.35 314.02 6,092.5 6,036.3 -451.6 -11,235.6 6,030,655.19 458,594.86 0.00 11,107.97 16,200.0 88.35 314.02 6,095.4 6,039.2 -382.2 -11,307.5 6,030,724.93 458,523.27 0.00 11,187.41 16,300.0 88.35 314.02 6,098.3 6,042.1 -312.7 -11,379.3 6,030,794.67 458,451.68 0.00 11,266.84 16,400.0 88.35 314.02 6,101.2 6,045.0 -243.3 -11,451.2 6,030,864.42 458,380.09 0.00 11,346.27 16,500.0 88.35 314.02 6,104.1 6,047.9 -173.8 -11,523.1 6,030,934.16 458,308.50 0.00 11,425.70 16,600.0 88.35 314.02 6,107.0 6,050.8 -104.3 -11,595.0 6,031,003.91 458,236.90 0.00 11,505.13 16,700.0 88.35 314.02 6,109.8 6,053.6 -34.9 -11,666.9 6,031,073.65 458,165.31 0.00 11,584.56 16,800.0 88.35 314.02 6,112.7 6,056.5 34.6 -11,738.7 6,031,143.39 458,093.72 0.00 11,664.00 16,900.0 88.35 314.02 6,115.6 6,059.4 104.0 -11,810.6 6,031,213.14 458,022.13 0.00 11,743.43 17,000.0 88.35 314.02 6,118.5 6,062.3 173.5 -11,882.5 6,031,282.88 457,950.53 0.00 11,822.86 17,100.0 88.35 314.02 6,121.4 6,065.2 243.0 -11,954.4 6,031,352.63 457,878.94 0.00 11,902.29 17,200.0 88.35 314.02 6,124.3 6,068.1 312.4 -12,026.3 6,031,422.37 457,807.35 0.00 11,981.72 17,238.8 88.35 314.02 6,125.4 6,069.2 339.4 -12,054.2 6,031,449.43 457,779.57 0.00 12,012.54 Start Dir 3.0/100'17238.80'MD,6125.40'TVD 17,238.9 88.35 314.02 6,125.4 6,069.2 339.4 -12,054.2 6,031,449.50 457,779.50 0.00 12,012.62 17,294.1 90.00 314.05 6,126.2 6,070.0 377.8 -12,093.9 6,031,488.00 457,740.00 3.00 12,056.45 PN11 v6 T4 17,300.0 90.18 314.05 6,126.2 6,070.0 381.9 -12,098.2 6,031,492.14 457,735.76 3.00 12,061.16 17,311.1 90.51 314.05 6,126.1 6,069.9 389.6 -12,106.1 6,031,499.89 457,727.81 3.00 12,069.98 End Dir 17311.10'MD,6126.10'TVD 17,400.0 90.51 314.05 6,125.3 6,069.1 451.4 -12,170.0 6,031,561.94 457,664.17 0.00 12,140.59 17,500.0 90.51 314.05 6,124.4 6,068.2 520.9 -12,241.9 6,031,631.75 457,592.59 0.00 12,220.02 17,600.0 90.51 314.05 6,123.5 6,067.3 590.5 -12,313.8 6,031,701.55 457,521.00 0.00 12,299.45 17,614.4 90.51 314.05 6,123.4 6,067.2 600.5 -12,324.1 6,031,711.60 457,510.69 0.00 12,310.89 Start Dir 3.0/100'17614.40'MD,6123.40'TVD 17,630.7 91.00 314.02 6,123.2 6,067.0 611.8 -12,335.9 6,031,723.00 457,499.00 3.00 12,323.87 PN11 v6 T5 17,700.0 93.08 314.02 6,120.7 6,064.5 659.9 -12,385.7 6,031,771.30 457,449.42 3.00 12,378.87 17,708.5 93.33 314.02 6,120.3 6,064.1 665.8 -12,391.8 6,031,777.22 457,443.34 3.00 12,385.62 End Dir 17708.50'MD,6120.30'TVD 17,708.6 93.33 314.02 6,120.3 6,064.1 665.9 -12,391.8 6,031,777.26 457,443.30 3.00 12,385.66 17,800.0 93.33 314.02 6,114.9 6,058.7 729.3 -12,457.4 6,031,840.95 457,377.92 0.00 12,458.21 4/9/2010 10:45:16AM Page 9 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,052.92 17,900.0 93.33 314.02 6,109.1 6,052.9 798.7 -12,529.2 6,031,910.60 457,306.41 0.00 12,537.54 18,000.0 93.33 314.02 6,103.3 6,047.1 868.0 -12,601.0 6,031,980.26 457,234.91 0.00 12,616.87 18,100.0 93.33 314.02 6,097.5 6,041.3 937.4 -12,672.8 6,032,049.91 457,163.41 0.00 12,696.20 18,200.0 93.33 314.02 6,091.7 6,035.5 1,006.8 -12,744.6 6,032,119.56 457,091.90 0.00 12,775.54 18,300.0 93.33 314.02 6,085.9 6,029.7 1,076.1 -12,816.4 6,032,189.21 457,020.40 0.00 12,854.87 18,400.0 93.33 314.02 6,080.0 6,023.8 1,145.5 -12,888.2 6,032,258.87 456,948.90 0.00 12,934.20 18,500.0 93.33 314.02 6,074.2 6,018.0 1,214.9 -12,960.0 6,032,328.52 456,877.40 0.00 13,013.53 18,600.0 93.33 314.02 6,068.4 6,012.2 1,284.2 -13,031.8 6,032,398.17 456,805.89 0.00 13,092.86 18,700.0 93.33 314.02 6,062.6 6,006.4 1,353.6 -13,103.6 6,032,467.82 456,734.39 0.00 13,172.20 18,800.0 93.33 314.02 6,056.8 6,000.6 1,423.0 -13,175.4 6,032,537.48 456,662.89 0.00 13,251.53 18,900.0 93.33 314.02 6,050.9 5,994.7 1,492.4 -13,247.2 6,032,607.13 456,591.38 0.00 13,330.86 18,981.6 93.33 314.02 6,046.2 5,990.0 1,549.0 -13,305.7 6,032,663.96 456,533.04 0.00 13,395.60 Total Depth at 18981.70'MD,6046.20'TVD 18,981.7 93.33 314.02 6,046.2 5,990.0 1,549.0 -13,305.8 6,032,664.00 456,533.00 0.00 13,395.64 41/2"-PN11v6 T6 Targets Target Name -hit/miss target Dip Angle Dip Dir. TVD +N/-S +E/-W Northing Easting -Shape (?) (7) (ft) (ft) (ft) (ft) (ft) PN11 v6 T1 0.00 0.00 6,088.2 -2,970.2 -8,579.2 6,028,126.12 461,240.72 -plan hits target -Point PN11 v6 T5 0.00 0.00 6,123.2 611.8 -12,335.9 6,031,723.00 457,499.00 -plan hits target -Point PN11 v6 T2 0.00 0.00 6,124.2 -1,968.6 -9,666.1 6,029,132.00 460,158.00 -plan hits target -Point PN11 v6 T4 0.00 0.00 6,126.2 377.8 -12,093.9 6,031,488.00 457,740.00 -plan hits target -Point PN11 v6 T6 0.00 0.00 6,046.2 1,549.0 -13,305.8 6,032,664.00 456,533.00 -plan hits target -Point PN11 v6 T3 0.00 0.00 6,076.2 -863.1 -10,809.7 6,030,242.00 459,019.00 -plan hits target -Point 4/9/2010 10:45:16AM Page 10 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16 PN13 Design: ODSN-16 PN13 wp06 Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name ' (in) (in) 3,382.4 3,000.0 11 3/4" 11.750 14.750 9,459.5 5,208.0 9 5/8" 9.625 11.750 12,452.1 6,091.2 7" 7.000 8.500 18,981.7 6,046.2 4 1/2" 4.500 6.125 Formations Measured Vertical Vertical Dip Depth Depth Depth SS Dip Direction (ft) (ft) ft Name Lithology (T) (') 11,257.1 5,827.0 Base HRZ 6,794.8 4,254.0 Brook 2B 10,840.5 5,696.0 Top HRZ 11,993.5 6,010.0 Top Kup C 9,431.6 5,198.0 Base Torok Sand 3,230.0 2,922.0 Tuffaceous Shales 0.00 12,457.0 6,092.0 Top Nuiqsut 12,008.9 6,013.0 Base Kuparuk(LCU) 2,355.6 2,291.0 Top West Sak 12,289.4 6,063.0 BCU 8,800.3 4,972.0 Torok Ss 11,721.5 5,951.0 Kalubik Marker Plan Annotations Measured Vertical Local Coordinates Depth Depth +NI-S +E/-W (ft) (ft) (ft) (ft) Comment 400.0 400.0 0.0 0.0 Start Dir 1.00/100'400.00'MD,400.00'TVD 700.0 699.9 3.3 -7.1 Start Dir 1.20/100'700.00'MD,699.90'TVD 1,116.7 1,114.5 20.2 -43.3 Start Dir 1.50/100'1116.70'MD,1114.50'TVD 1,650.0 1,635.7 67.0 -143.7 End Dir 1650.00'MD,1635.70'TVD 1,768.9 1,750.0 80.9 -173.4 Start Dir 3.3/100'1768.90'MD,1750.00'TVD 3,330.5 2,974.7 -169.7 -1,019.6 Start Dir 3.0/100'3330.50'MD,2974.70'TVD 3,382.5 3,000.0 -191.4 -1,059.5 End Dir 3382.50'MD,3000.00'TVD 3,402.5 3,009.6 -199.9 -1,074.9 Start Dir 1.50/100'3402.50'MD,3009.60'TVD 3,903.9 3,219.0 -421.9 -1,472.2 End Dir 3903.90'MD,3219.00'TVD 10,037.0 5,414.8 -3,259.1 -6,446.5 Start Dir 3.0/100'10037.00'MD,5414.80'TVD 12,134.6 6,036.1 -3,139.6 -8,337.2 End Dir 12134.60'MD,6036.10'TVD 12,434.5 6,088.2 -2,970.2 -8,579.1 Start Dir 3.0/100'12434.50'MD,6088.20'TVD 12,886.2 6,127.0 -2,684.4 -8,925.4 End Dir 12886.20'MD,6127.00'TVD 13,911.0 6,124.2 -1,972.3 -9,662.3 Start Dir 3.0/100'13911.00'MD,6124.20'TVD 13,976.1 6,123.3 -1,927.0 -9,709.1 End Dir 13976.10'MD,6123.30'TVD 15,447.6 6,077.1 -904.8 -10,766.6 Start Dir 3.0/100'15447.60'MD,6077.10'TVD 15,562.7 6,077.0 -824.8 -10,849.3 End Dir 15562.70'MD,6077.00'TVD 17,238.8 6,125.4 339.4 -12,054.2 Start Dir 3.0/100'17238.80'MD,6125.40'TVD 17,311.1 6,126.1 389.6 -12,106.1 End Dir 17311.10'MD,6126.10'TVD 17,614.4 6,123.4 600.5 -12,324.1 Start Dir 3.0/100'17614.40'MD,6123.40'TVD 17,708.5 6,120.3 665.8 -12,391.8 End Dir 17708.50'MD,6120.30'TVD 18,981.6 6,046.2 1,549.0 -13,305.7 Total Depth at 18981.70'MD,6046.20'TVD 4/9/2010 10:45:16AM Page 11 COMPASS 2003.16 Build 42B 2 o3 L L I- 0 II M3 C W 0 J J L Q a I W M L in E O N - O a a O • M - R N IIM O !n d L d z .cr a L re � T X ea 25 a) m O y M Z Z Z a t RI CO '� N O d O@ Z c N Wi ^^++ Q a 3 I ! flhI p t,0 N d J C w a r l0 V L Z 1D L pV CD .— Y � © d mce ♦+ ,/A� 3 T O V '0 N W /� ; M M V V+ x = ou) o • a> v _1 CCL ' Z . e ■ aL 0r, — No� Q � LL LL — D D d d - _o = 0 (6 . o C4 o m= m o all Y L R G C C N -* N N N W -1 iA to tD t.0 N Z .�' L N 41— i L r r r L .. 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OOOOO G _ 8 2 , 'W g °=d o 11 , I 1 I f 1 11 11 l l -� O Q O Y 3 .0�� -0 4 0 0 8 0 0 $ 0 0 o S2 8 aa N b o°o 00 �°o N N ' ' (u/8 000z (+9Uory u nos L Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature • Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Project Oooguruk Development Map System: US State Plane 1927(Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927(NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Site Oooguruk Drill Site Site Position: Northing: 6,031,151.32ft Latitude: 70°29'46.242 N From: Map Easting: 469,920.45ft Longitude: 150°14'45.465 W Position Uncertainty: 0.0 ft Slot Radius: in Grid Convergence: -0.23? Well ODSN-16-Slot ODS-16 Well Position +N/-S 0.0 ft Northing: 6,031,061.18 ft • Latitude: 70°29'45.351 N +E/-W 0.0 ft Easting: 469,831.04 ft . Longitude: 150°14'48.086 W Position Uncertainty 0.0 ft Wellhead Elevation: ft Ground Level: 13.5ft . Wellbore ODSN-16L1 PN13 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (?) (?) (nT) IG RF200510 12/31/2009 21.99 80.81 57,759 Design ODSN-16L1 PN13 wp02 Audit Notes: Version: Phase: PLAN Tie On Depth: 12,475.0 Vertical Section: Depth From(TVD) +N/$ +E/-W Direction (ft) (ft) (ft) (?) 42.7 0.0 0.0 277.84 4/12/2010 3:26:03PM Page 2 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Plan Sections Measured Vertical TVD Dogleg Build Turn Depth Inclination Azimuth Depth System +N/-S +E/-W Rate Rate Rate Tool Face (ft) (?) (?) (ft) ft (ft) (ft) (?/100ft) (?/100ft) (?/100ft) (?) 12,475.0 80.90 305.82 6,094.9 6,038.7 -2,947.1 -8,611.7 0.00 0.00 0.00 0.00 12,508.0 79.91 305.82 6,100.4 6,044.2 -2,928.1 -8,638.1 3.00 -3.00 0.00 180.00 12,513.0 79.91 305.82 6,101.3 6,045.1 -2,925.2 -8,642.1 0.00 0.00 0.00 0.00 12,936.5 88.76 315.00 6,143.1 6,086.9 -2,652.3 -8,962.2 3.00 2.09 2.17 46.45 13,049.9 88.76 315.00 6,145.6 6,089.4 -2,572.2 -9,042.3 0.00 0.00 0.00 0.00 13,089.7 89.46 314.03 6,146.2 6,090.0 -2,544.3 -9,070.7 3.00 1.76 -2.43 -54.15 13,089.8 89.46 314.03 6,146.2 6,090.0 -2,544.2 -9,070.8 3.00 -3.00 -0.14 0.00 14,662.2 89.46 314.03 6,161.1 6,104.9 -1,451.4 -10,201.3 0.00 0.00 0.00 0.00 14,680.4 90.00 314.05 6,161.2 6,105.0 -1,438.8 -10,214.3 3.00 3.00 0.14 2.73 14,711.0 90.92 314.05 6,161.0 6,104.8 -1,417.5 -10,236.3 3.00 3.00 0.00 0.03 16,241.2 90.92 314.05 6,136.4 6,080.2 -353.6 -11,335.9 0.00 0.00 0.00 0.00 16,271.9 90.00 314.00 6,136.2 6,080.0 -332.3 -11,357.9 3.00 -3.00 -0.17 -176.79 16,296.2 89.27 314.00 6,136.4 6,080.2 -315.4 -11,375.5 3.00 -3.00 0.00 -179.97 17,838.8 89.27 314.00 6,156.0 6,099.8 756.2 -12,485.0 0.00 0.00 0.00 0.00 17,863.3 90.00 314.05 6,156.2 6,100.0 773.2 -12,502.5 3.00 2.99 0.21 3.96 17,966.9 93.11 314.06 6,153.4 6,097.2 845.2 -12,577.0 3.00 3.00 0.00 0.02 18,622.3 93.11 314.06 6,117.8 6,061.6 1,300.2 -13,047.3 0.00 0.00 0.00 0.00 18,659.3 92.00 314.00 6,116.2 6,060.0 1,325.9 -13,073.8 3.00 -3.00 -0.14 -177.34 18,678.2 91.43 314.00 6,115.6 6,059.4 1,339.0 -13,087.4 3.00 -3.00 0.00 -180.00 19,455.2 91.43 314.00 6,096.2 6,040.0 1,878.6 -13,646.2 0.00 0.00 0.00 0.00 4/12/2010 3:26:03PM Page 3 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report . Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 43.80 100.0 0.00 0.00 100.0 43.8 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 200.0 0.00 0.00 200.0 143.8 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 300.0 0.00 0.00 300.0 243.8 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 400.0 0.00 0.00 400.0 343.8 0.0 0.0 6,031,061.18 469,831.04 0.00 0.00 500.0 1.00 295.00 500.0 443.8 0.4 -0.8 6,031,061.55 469,830.25 1.00 0.83 600.0 2.00 295.00 600.0 543.8 1.5 -3.2 6,031,062.67 469,827.88 1.00 3.33 700.0 3.00 295.00 699.9 643.7 3.3 -7.1 6,031,064.53 469,823.94 1.00 7.50 800.0 4.20 295.00 799.7 743.5 6.0 -12.8 6,031,067.20 469,818.26 1.20 13.50 900.0 5.40 295.00 899.3 843.1 9.5 -20.4 6,031,070.77 469,810.69 1.20 21.50 1,000.0 6.60 295.00 998.8 942.6 13.9 -29.9 6,031,075.23 469,801.23 1.20 31.48 1,100.0 7.80 295.00 1,098.0 1,041.8 19.2 -41.2 6,031,080.57 469,789.90 1.20 43.46 1,200.0 9.25 295.00 1,196.9 1,140.7 25.5 -54.6 6,031,086.87 469,776.52 1.45 57.59 1,300.0 10.75 295.00 1,295.3 1,239.1 32.8 -70.4 6,031,094.27 469,760.82 1.50 74.18 1,400.0 12.25 295.00 1,393.3 1,337.1 41.2 -88.4 6,031,102.77 469,742.79 1.50 93.23 1,500.0 13.75 295.00 1,490.8 1,434.6 50.7 -108.8 6,031,112.36 469,722.44 1.50 114.72 1,600.0 15.25 295.00 1,587.6 1,531.4 61.3 -131.5 6,031,123.03 469,699.79 1.50 138.64 1,700.0 16.00 295.00 1,683.8 1,627.6 72.8 -156.2 6,031,134.65 469,675.15 0.75 164.68 1,800.0 16.49 291.77 1,779.9 1,723.7 84.3 -181.4 6,031,146.22 469,650.00 1.03 191.21 1,900.0 18.36 282.68 1,875.3 1,819.1 93.0 -210.0 6,031,155.06 469,621.48 3.30 220.68 2,000.0 20.59 275.35 1,969.6 1,913.4 98.1 -242.8 6,031,160.29 469,588.63 3.30 253.95 2,100.0 23.06 269.45 2,062.4 2,006.2 99.6 -279.9 6,031,161.89 469,551.54 3.30 290.90 2,200.0 25.71 264.68 2,153.5 2,097.3 97.4 -321.1 6,031,159.86 469,510.35 3.30 331.40 2,300.0 28.48 260.76 2,242.5 2,186.3 91.5 -366.3 6,031,154.20 469,465.18 3.30 375.33 2,400.0 31.36 257.50 2,329.2 2,273.0 82.1 -415.2 6,031,144.94 469,416.20 3.30 422.53 2,500.0 34.30 254.73 2,413.2 2,357.0 69.0 -467.8 6,031,132.10 469,363.56 3.30 472.85 2,600.0 37.29 252.36 2,494.3 2,438.1 52.4 -523.9 6,031,115.72 469,307.44 3.30 526.13 2,700.0 40.33 250.29 2,572.3 2,516.1 32.3 -583.2 6,031,095.87 469,248.01 3.30 582.18 2,800.0 43.39 248.47 2,646.7 2,590.5 8.8 -645.7 6,031,072.60 469,185.49 3.30 640.82 2,900.0 46.49 246.84 2,717.5 2,661.3 -18.1 -711.0 6,031,045.99 469,120.08 3.30 701.86 3,000.0 49.60 245.38 2,784.4 2,728.2 -48.2 -778.9 6,031,016.14 469,051.99 3.30 765.09 3,100.0 52.73 244.04 2,847.1 2,790.9 -81.5 -849.4 6,030,983.14 468,981.45 3.30 830.30 3,200.0 55.88 242.81 2,905.4 2,849.2 -117.8 -922.0 6,030,947.09 468,908.69 3.30 897.28 3,300.0 59.04 241.67 2,959.2 2,903.0 -157.1 -996.5 6,030,908.13 468,833.96 3.30 965.81 3,382.4 61.56 241.34 3,000.0 2,943.8 -191.4 -1,059.4 6,030,874.11 468,770.97 3.08 1,023.41 11 3/4" 3,400.0 61.56 241.34 3,008.4 2,952.2 -198.8 -1,073.0 6,030,866.75 468,757.38 0.01 1,035.83 3,500.0 63.01 241.13 3,054.9 2,998.7 -241.4 -1,150.6 6,030,824.48 468,679.63 1.46 1,106.89 3,600.0 64.50 240.91 3,099.1 3,042.9 -284.9 -1,229.0 6,030,781.34 468,601.00 1.50 1,178.68 3,700.0 65.99 240.71 3,141.0 3,084.8 -329.1 -1,308.3 6,030,737.38 468,521.55 1.50 1,251.18 3,800.0 67.48 240.51 3,180.5 3,124.3 -374.2 -1,388.3 6,030,692.62 468,441.34 1.50 1,324.32 3,900.0 68.96 240.31 3,217.6 3,161.4 -420.1 -1,469.1 6,030,647.10 468,360.42 1.50 1,398.05 4,000.0 69.02 240.30 3,253.4 3,197.2 -466.3 -1,550.2 6,030,601.17 468,279.14 0.06 1,472.09 4,100.0 69.02 240.30 3,289.2 3,233.0 -512.6 -1,631.3 6,030,555.25 468,197.85 0.00 1,546.13 4,200.0 69.02 240.30 3,325.0 3,268.8 -558.9 -1,712.4 6,030,509.32 468,116.57 0.00 1,620.17 4,300.0 69.02 240.30 3,360.8 3,304.6 -605.1 -1,793.5 6,030,463.39 468,035.28 0.00 1,694.21 4/12/2010 3:26:03PM Page 4 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 3,340.41 4,400.0 69.02 240.30 3,396.6 3,340.4 -651.4 -1,874.6 6,030,417.46 467,954.00 0.00 1,768.25 4,500.0 69.02 240.30 3,432.4 3,376.2 -697.7 -1,955.7 6,030,371.54 467,872.71 0.00 1,842.29 4,600.0 69.02 240.30 3,468.2 3,412.0 -743.9 -2,036.8 6,030,325.61 467,791.43 0.00 1,916.32 4,700.0 69.02 240.30 3,504.0 3,447.8 -790.2 -2,117.9 6,030,279.68 467,710.14 0.00 1,990.36 4,800.0 69.02 240.30 3,539.8 3,483.6 -836.4 -2,199.0 6,030,233.76 467,628.86 0.00 2,064.40 4,900.0 69.02 240.30 3,575.6 3,519.4 -882.7 -2,280.1 6,030,187.83 467,547.58 0.00 2,138.44 5,000.0 69.02 240.30 3,611.4 3,555.2 -929.0 -2,361.2 6,030,141.90 467,466.29 0.00 2,212.48 5,100.0 69.02 240.30 3,647.2 3,591.0 -975.2 -2,442.3 6,030,095.97 467,385.01 0.00 2,286.52 5,200.0 69.02 240.30 3,683.0 3,626.8 -1,021.5 -2,523.4 6,030,050.05 467,303.72 0.00 2,360.56 5,300.0 69.02 240.30 3,718.8 3,662.6 -1,067.7 -2,604.6 6,030,004.12 467,222.44 0.00 2,434.60 5,400.0 69.02 240.30 3,754.6 3,698.4 -1,114.0 -2,685.7 6,029,958.19 467,141.15 0.00 2,508.63 5,500.0 69.02 240.30 3,790.4 3,734.2 -1,160.3 -2,766.8 6,029,912.27 467,059.87 0.00 2,582.67 5,600.0 69.02 240.30 3,826.2 3,770.0 -1,206.5 -2,847.9 6,029,866.34 466,978.58 0.00 2,656.71 5,700.0 69.02 240.30 3,862.0 3,805.8 -1,252.8 -2,929.0 6,029,820.41 466,897.30 0.00 2,730.75 5,800.0 69.02 240.30 3,897.8 3,841.6 -1,299.1 -3,010.1 6,029,774.49 466,816.01 0.00 2,804.79 5,900.0 69.02 240.30 3,933.6 3,877.4 -1,345.3 -3,091.2 6,029,728.56 466,734.73 0.00 2,878.83 6,000.0 69.02 240.30 3,969.4 3,913.2 -1,391.6 -3,172.3 6,029,682.63 466,653.44 0.00 2,952.87 6,100.0 69.02 240.30 4,005.2 3,949.0 -1,437.8 -3,253.4 6,029,636.70 466,572.16 0.00 3,026.91 6,200.0 69.02 240.30 4,041.0 3,984.8 -1,484.1 -3,334.5 6,029,590.78 466,490.88 0.00 3,100.94 6,300.0 69.02 240.30 4,076.8 4,020.6 -1,530.4 -3,415.6 6,029,544.85 466,409.59 0.00 3,174.98 6,400.0 69.02 240.30 4,112.6 4,056.4 -1,576.6 -3,496.7 6,029,498.92 466,328.31 0.00 3,249.02 6,500.0 69.02 240.30 4,148.4 4,092.2 -1,622.9 -3,577.8 6,029,453.00 466,247.02 0.00 3,323.06 6,600.0 69.02 240.30 4,184.3 4,128.1 -1,669.1 -3,658.9 6,029,407.07 466,165.74 0.00 3,397.10 6,700.0 69.02 240.30 4,220.1 4,163.9 -1,715.4 -3,740.0 6,029,361.14 466,084.45 0.00 3,471.14 6,800.0 69.02 240.30 4,255.9 4,199.7 -1,761.7 -3,821.1 6,029,315.22 466,003.17 0.00 3,545.18 6,900.0 69.02 240.30 4,291.7 4,235.5 -1,807.9 -3,902.2 6,029,269.29 465,921.88 0.00 3,619.21 7,000.0 69.02 240.30 4,327.5 4,271.3 -1,854.2 -3,983.4 6,029,223.36 465,840.60 0.00 3,693.25 7,100.0 69.02 240.30 4,363.3 4,307.1 -1,900.4 -4,064.5 6,029,177.43 465,759.31 0.00 3,767.29 7,200.0 69.02 240.30 4,399.1 4,342.9 -1,946.7 -4,145.6 6,029,131.51 465,678.03 0.00 3,841.33 7,300.0 69.02 240.30 4,434.9 4,378.7 -1,993.0 -4,226.7 6,029,085.58 465,596.74 0.00 3,915.37 7,400.0 69.02 240.30 4,470.7 4,414.5 -2,039.2 -4,307.8 6,029,039.65 465,515.46 0.00 3,989.41 7,500.0 69.02 240.30 4,506.5 4,450.3 -2,085.5 -4,388.9 6,028,993.73 465,434.18 0.00 4,063.45 7,600.0 69.02 240.30 4,542.3 4,486.1 -2,131.8 -4,470.0 6,028,947.80 465,352.89 0.00 4,137.49 7,700.0 69.02 240.30 4,578.1 4,521.9 -2,178.0 -4,551.1 6,028,901.87 465,271.61 0.00 4,211.52 7,800.0 69.02 240.30 4,613.9 4,557.7 -2,224.3 -4,632.2 6,028,855.94 465,190.32 0.00 4,285.56 7,900.0 69.02 240.30 4,649.7 4,593.5 -2,270.5 -4,713.3 6,028,810.02 465,109.04 0.00 4,359.60 8,000.0 69.02 240.30 4,685.5 4,629.3 -2,316.8 -4,794.4 6,028,764.09 465,027.75 0.00 4,433.64 8,100.0 69.02 240.30 4,721.3 4,665.1 -2,363.1 -4,875.5 6,028,718.16 464,946.47 0.00 4,507.68 8,200.0 69.02 240.30 4,757.1 4,700.9 -2,409.3 -4,956.6 6,028,672.24 464,865.18 0.00 4,581.72 8,300.0 69.02 240.30 4,792.9 4,736.7 -2,455.6 -5,037.7 6,028,626.31 464,783.90 0.00 4,655.76 8,400.0 69.02 240.30 4,828.7 4,772.5 -2,501.8 -5,118.8 6,028,580.38 464,702.61 0.00 4,729.79 8,500.0 69.02 240.30 4,864.5 4,808.3 -2,548.1 -5,199.9 6,028,534.46 464,621.33 0.00 4,803.83 8,600.0 69.02 240.30 4,900.3 4,844.1 -2,594.4 -5,281.0 6,028,488.53 464,540.04 0.00 4,877.87 8,700.0 69.02 240.30 4,936.1 4,879.9 -2,640.6 -5,362.1 6,028,442.60 464,458.76 0.00 4,951.91 8,800.0 69.02 240.30 4,971.9 4,915.7 -2,686.9 -5,443.3 6,028,396.67 464,377.48 0.00 5,025.95 4/12/2010 3:26:03PM Page 5 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 4,951.49 8,900.0 69.02 240.30 5,007.7 4,951.5 -2,733.2 -5,524.4 6,028,350.75 464,296.19 0.00 5,099.99 9,000.0 69.02 240.30 5,043.5 4,987.3 -2,779.4 -5,605.5 6,028,304.82 464,214.91 0.00 5,174.03 9,100.0 69.02 240.30 5,079.3 5,023.1 -2,825.7 -5,686.6 6,028,258.89 464,133.62 0.00 5,248.07 9,200.0 69.02 240.30 5,115.1 5,058.9 -2,871.9 -5,767.7 6,028,212.97 464,052.34 0.00 5,322.10 9,300.0 69.02 240.30 5,150.9 5,094.7 -2,918.2 -5,848.8 6,028,167.04 463,971.05 0.00 5,396.14 9,400.0 69.02 240.30 5,186.7 5,130.5 -2,964.5 -5,929.9 6,028,121.11 463,889.77 0.00 5,470.18 9,459.5 69.02 240.30 5,208.0 5,151.8 -2,992.0 -5,978.1 6,028,093.79 463,841.40 0.00 5,514.24 9 5/8" 9,500.0 69.02 240.30 5,222.5 5,166.3 -3,010.7 -6,011.0 6,028,075.18 463,808.48 0.00 5,544.22 9,600.0 69.02 240.30 5,258.3 5,202.1 -3,057.0 -6,092.1 6,028,029.26 463,727.20 0.00 5,618.26 9,700.0 69.02 240.30 5,294.1 5,237.9 -3,103.2 -6,173.2 6,027,983.33 463,645.91 0.00 5,692.30 9,800.0 69.02 240.30 5,329.9 5,273.7 -3,149.5 -6,254.3 6,027,937.40 463,564.63 0.00 5,766.34 9,900.0 69.02 240.30 5,365.7 5,309.5 -3,195.8 -6,335.4 6,027,891.48 463,483.35 0.00 5,840.38 10,000.0 69.02 240.30 5,401.5 5,345.3 -3,242.0 -6,416.5 6,027,845.55 463,402.06 0.00 5,914.41 10,100.0 69.01 242.32 5,437.3 5,381.1 -3,287.4 -6,498.1 6,027,800.53 463,320.28 1.89 5,989.07 10,200.0 69.04 245.54 5,473.1 5,416.9 -3,328.4 -6,582.0 6,027,759.85 463,236.26 3.00 6,066.55 10,300.0 69.13 248.75 5,508.8 5,452.6 -3,364.7 -6,668.0 6,027,723.92 463,150.06 3.00 6,146.86 10,400.0 69.28 251.95 5,544.3 5,488.1 -3,396.1 -6,756.1 6,027,692.85 463,061.92 3.00 6,229.78 10,500.0 69.49 255.15 5,579.6 5,523.4 -3,422.6 -6,845.8 6,027,666.72 462,972.07 3.00 6,315.08 10,600.0 69.75 258.34 5,614.4 5,558.2 -3,444.1 -6,937.1 6,027,645.61 462,880.77 3.00 6,402.52 10,700.0 70.08 261.51 5,648.8 5,592.6 -3,460.5 -7,029.5 6,027,629.56 462,788.25 3.00 6,491.87 10,800.0 70.46 264.67 5,682.5 5,626.3 -3,471.8 -7,122.9 6,027,618.62 462,694.79 3.00 6,582.89 10,900.0 70.89 267.82 5,715.6 5,659.4 -3,478.0 -7,217.1 6,027,612.83 462,600.62 3.00 6,675.31 11,000.0 71.38 270.95 5,748.0 5,691.8 -3,479.0 -7,311.7 6,027,612.21 462,506.02 3.00 6,768.90 11,100.0 71.92 274.06 5,779.4 5,723.2 -3,474.9 -7,406.5 6,027,616.74 462,411.24 3.00 6,863.39 11,200.0 72.51 277.15 5,810.0 5,753.8 -3,465.6 -7,501.3 6,027,626.42 462,316.53 3.00 6,958.53 11,300.0 73.15 280.21 5,839.5 5,783.3 -3,451.2 -7,595.7 6,027,641.22 462,222.17 3.00 7,054.05 11,400.0 73.83 283.26 5,868.0 5,811.8 -3,431.7 -7,689.6 6,027,661.11 462,128.40 3.00 7,149.68 11,500.0 74.55 286.29 5,895.2 5,839.0 -3,407.1 -7,782.6 6,027,686.02 462,035.49 3.00 7,245.18 11,600.0 75.32 289.29 5,921.2 5,865.0 -3,377.6 -7,874.5 6,027,715.89 461,943.69 3.00 7,340.28 11,700.0 76.12 292.27 5,945.9 5,889.7 -3,343.2 -7,965.1 6,027,750.64 461,853.25 3.00 7,434.71 11,800.0 76.96 295.24 5,969.1 5,912.9 -3,304.1 -8,054.1 6,027,790.17 461,764.41 3.00 7,528.23 11,900.0 77.84 298.18 5,991.0 5,934.8 -3,260.2 -8,141.3 6,027,834.38 461,677.43 3.00 7,620.56 12,000.0 78.74 301.10 6,011.3 5,955.1 -3,211.8 -8,226.4 6,027,883.14 461,592.54 3.00 7,711.46 12,100.0 79.67 304.00 6,030.0 5,973.8 -3,158.9 -8,309.1 6,027,936.31 461,509.98 3.00 7,800.69 12,200.0 80.00 305.00 6,047.5 5,991.3 -3,102.7 -8,390.0 6,027,992.87 461,429.39 1.04 7,888.43 12,300.0 80.00 305.00 6,064.8 6,008.6 -3,046.2 -8,470.6 6,028,049.68 461,348.96 0.00 7,976.05 12,400.0 80.00 305.00 6,082.2 6,026.0 -2,989.7 -8,551.3 6,028,106.48 461,268.53 0.00 8,063.67 12,452.1 80.39 305.36 6,091.2 6,035.0 -2,960.2 -8,593.3 6,028,136.13 461,226.64 1.01 8,109.30 7" . 12,475.0 80.90 305.82 6,094.9 6,038.7 -2,947.1 -8,611.7 6,028,149.35 461,208.32 3.00 8,129.30 Start Dir 3.0/100'12475.00'MD,6094.90'TVD,TFO 180 12,500.0 80.15 305.82 6,099.0 6,042.8 -2,932.7 -8,631.7 6,028,163.86 461,188.39 3.00 8,151.07 12,508.0 79.91 305.82 6,100.4 6,044.2 -2,928.1 -8,638.1 6,028,168.50 461,182.02 3.00 8,158.03 End Dir 12508.00'MD,6100.40'TVD 4/12/2010 3:26:03PM Page 6 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,045.08 12,513.0 79.91 305.82 6,101.3 6,045.1 -2,925.2 -8,642.1 6,028,171.40 461,178.04 0.00 8,162.38 Start Dir 3.0/100'12513.00'MD,6101.30'TVD 12,600.0 81.72 307.73 6,115.2 6,059.0 -2,873.8 -8,710.9 6,028,223.09 461,109.48 3.00 8,237.53 12,700.0 83.80 309.91 6,127.8 6,071.6 -2,811.6 -8,788.1 6,028,285.58 461,032.46 3.00 8,322.57 12,800.0 85.89 312.07 6,136.8 6,080.6 -2,746.2 -8,863.3 6,028,351.20 460,957.56 3.00 8,405.94 12,900.0 87.99 314.21 6,142.1 6,085.9 -2,678.0 -8,936.2 6,028,419.76 460,884.99 3.00 8,487.43 12,936.5 88.76 315.00 6,143.1 6,086.9 -2,652.4 -8,962.1 6,028,445.48 460,859.12 3.00 8,516.66 End Dir 12936.50'MD,6143.10'TVD 13,000.0 88.76 315.00 6,144.5 6,088.3 -2,607.5 -9,007.0 6,028,490.55 460,814.42 0.00 8,567.25 13,049.9 88.76 315.00 6,145.6 6,089.4 -2,572.2 -9,042.3 6,028,525.96 460,779.29 0.00 8,607.01 Start Dir 3.0/100'13049.90'MD,6145.60'TVD 13,089.7 89.46 314.03 6,146.2 6,090.0 -2,544.3 -9,070.7 6,028,554.00 460,751.00 3.00 8,638.96 ODSN-16L1 v2 T1 13,089.8 89.46 314.03 6,146.2 6,090.0 -2,544.2 -9,070.8 6,028,554.04 460,750.95 0.00 8,639.01 End Dir 13089.80'MD,6146.20'TVD 13,100.0 89.46 314.03 6,146.3 6,090.1 -2,537.1 -9,078.1 6,028,561.16 460,743.65 0.03 8,647.24 13,200.0 89.46 314.03 6,147.2 6,091.0 -2,467.6 -9,150.0 6,028,630.95 460,672.04 0.00 8,727.94 13,300.0 89.46 314.03 6,148.2 6,092.0 -2,398.1 -9,221.9 6,028,700.73 460,600.44 0.00 8,808.65 13,400.0 89.46 314.03 6,149.1 6,092.9 -2,328.6 -9,293.8 6,028,770.51 460,528.83 0.00 8,889.35 13,500.0 89.46 314.03 6,150.1 6,093.9 -2,259.1 -9,365.7 6,028,840.29 460,457.23 0.00 8,970.05 13,600.0 89.46 314.03 6,151.0 6,094.8 -2,189.6 -9,437.6 6,028,910.08 460,385.62 0.00 9,050.75 13,700.0 89.46 314.03 6,152.0 6,095.8 -2,120.1 -9,509.5 6,028,979.86 460,314.01 0.00 9,131.46 13,800.0 89.46 314.03 6,152.9 6,096.7 -2,050.6 -9,581.4 6,029,049.64 460,242.41 0.00 9,212.16 13,900.0 89.46 314.03 6,153.9 6,097.7 -1,981.1 -9,653.3 6,029,119.42 460,170.80 0.00 9,292.86 14,000.0 89.46 314.03 6,154.8 6,098.6 -1,911.6 -9,725.2 6,029,189.21 460,099.19 0.00 9,373.57 14,100.0 89.46 314.03 6,155.8 6,099.6 -1,842.1 -9,797.0 6,029,258.99 460,027.59 0.00 9,454.27 14,200.0 89.46 314.03 6,156.7 6,100.5 -1,772.7 -9,868.9 6,029,328.77 459,955.98 0.00 9,534.97 14,300.0 89.46 314.03 6,157.7 6,101.5 -1,703.2 -9,940.8 6,029,398.56 459,884.38 0.00 9,615.67 14,400.0 89.46 314.03 6,158.6 6,102.4 -1,633.7 -10,012.7 6,029,468.34 459,812.77 0.00 9,696.38 14,500.0 89.46 314.03 6,159.6 6,103.4 -1,564.2 -10,084.6 6,029,538.12 459,741.16 0.00 9,777.08 14,600.0 89.46 314.03 6,160.5 6,104.3 -1,494.7 -10,156.5 6,029,607.90 459,669.56 0.00 9,857.78 14,662.2 89.46 314.03 6,161.1 6,104.9 -1,451.4 -10,201.2 6,029,651.31 459,625.02 0.00 9,907.98 Start Dir 3.0/100'14662.20'MD,6161.10'TVD 14,680.4 90.00 314.05 6,161.2 6,105.0 -1,438.8 -10,214.3 6,029,664.00 459,612.00 2.99 9,922.65 ODSN-16L1 v2 T2 14,700.0 90.59 314.05 6,161.1 6,104.9 -1,425.1 -10,228.4 6,029,677.70 459,597.96 3.00 9,938.48 14,711.0 90.92 314.05 6,161.0 6,104.8 -1,417.5 -10,236.3 6,029,685.38 459,590.09 2.99 9,947.35 End Dir 14711.00'MD,6161.00'TVD 14,800.0 90.92 314.05 6,159.5 6,103.3 -1,355.6 -10,300.3 6,029,747.51 459,526.39 0.00 10,019.15 14,900.0 90.92 314.05 6,157.9 6,101.7 -1,286.1 -10,372.1 6,029,817.32 459,454.82 0.00 10,099.82 15,000.0 90.92 314.05 6,156.3 6,100.1 -1,216.6 -10,444.0 6,029,887.13 459,383.25 0.00 10,180.48 15,100.0 90.92 314.05 6,154.7 6,098.5 -1,147.0 -10,515.8 6,029,956.94 459,311.69 0.00 10,261.15 15,200.0 90.92 314.05 6,153.1 6,096.9 -1,077.5 -10,587.7 6,030,026.75 459,240.12 0.00 10,341.82 15,300.0 90.92 314.05 6,151.5 6,095.3 -1,008.0 -10,659.6 6,030,096.56 459,168.55 0.00 10,422.49 15,400.0 90.92 314.05 6,149.9 6,093.7 -938.5 -10,731.4 6,030,166.37 459,096.98 0.00 10,503.16 4/12/2010 3:26:03PM Page 7 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,092.12 15,500.0 90.92 314.05 6,148.3 6,092.1 -868.9 -10,803.3 6,030,236.18 459,025.41 0.00 10,583.83 15,600.0 90.92 314.05 6,146.7 6,090.5 -799.4 -10,875.1 6,030,305.99 458,953.85 0.00 10,664.50 15,700.0 90.92 314.05 6,145.1 6,088.9 -729.9 -10,947.0 6,030,375.80 458,882.28 0.00 10,745.17 15,800.0 90.92 314.05 6,143.5 6,087.3 -660.4 -11,018.9 6,030,445.61 458,810.71 0.00 10,825.83 15,900.0 90.92 314.05 6,141.9 6,085.7 -590.8 -11,090.7 6,030,515.42 458,739.14 0.00 10,906.50 16,000.0 90.92 314.05 6,140.3 6,084.1 -521.3 -11,162.6 6,030,585.23 458,667.57 0.00 10,987.17 16,100.0 90.92 314.05 6,138.7 6,082.5 -451.8 -11,234.4 6,030,655.04 458,596.01 0.00 11,067.84 16,200.0 90.92 314.05 6,137.1 6,080.9 -382.3 -11,306.3 6,030,724.85 458,524.44 0.00 11,148.51 16,241.2 90.92 314.05 6,136.4 6,080.2 -353.6 -11,335.9 6,030,753.61 458,494.95 0.00 11,181.74 Start Dir 3.0/100'16241.20'MD,6136.40'TVD 16,271.9 90.00 314.00 6,136.2 6,080.0 -332.3 -11,357.9 6,030,775.00 458,473.00 3.00 11,206.48 ODSN-16L1 v2 T3 16,296.2 89.27 314.00 6,136.4 6,080.2 -315.4 -11,375.4 6,030,791.98 458,455.56 3.00 11,226.14 End Dir 16296.20'MD,6136.40'TVD 16,300.0 89.27 314.00 6,136.4 6,080.2 -312.8 -11,378.2 6,030,794.63 458,452.84 0.03 11,229.21 16,400.0 89.27 314.00 6,137.7 6,081.5 -243.3 -11,450.1 6,030,864.38 458,381.20 0.00 11,309.93 16,500.0 89.27 314.00 6,139.0 6,082.8 -173.8 -11,522.0 6,030,934.13 458,309.57 0.00 11,390.66 16,600.0 89.27 314.00 6,140.2 6,084.0 -104.4 -11,593.9 6,031,003.88 458,237.93 0.00 11,471.38 16,700.0 89.27 314.00 6,141.5 6,085.3 -34.9 -11,665.9 6,031,073.62 458,166.30 0.00 11,552.11 16,800.0 89.27 314.00 6,142.8 6,086.6 34.6 -11,737.8 6,031,143.37 458,094.67 0.00 11,632.83 16,900.0 89.27 314.00 6,144.1 6,087.9 104.0 -11,809.7 6,031,213.12 458,023.03 0.00 11,713.56 17,000.0 89.27 314.00 6,145.3 6,089.1 173.5 -11,881.6 6,031,282.87 457,951.40 0.00 11,794.29 17,100.0 89.27 314.00 6,146.6 6,090.4 243.0 -11,953.6 6,031,352.62 457,879.76 0.00 11,875.01 17,200.0 89.27 314.00 6,147.9 6,091.7 312.4 -12,025.5 6,031,422.37 457,808.13 0.00 11,955.74 17,300.0 89.27 314.00 6,149.2 6,093.0 381.9 -12,097.4 6,031,492.12 457,736.49 0.00 12,036.46 17,400.0 89.27 314.00 6,150.4 6,094.2 451.3 -12,169.3 6,031,561.86 457,664.86 0.00 12,117.19 17,500.0 89.27 314.00 6,151.7 6,095.5 520.8 -12,241.3 6,031,631.61 457,593.22 0.00 12,197.92 17,600.0 89.27 314.00 6,153.0 6,096.8 590.3 -12,313.2 6,031,701.36 457,521.59 0.00 12,278.64 17,700.0 89.27 314.00 6,154.3 6,098.1 659.7 -12,385.1 6,031,771.11 457,449.95 0.00 12,359.37 17,800.0 89.27 314.00 6,155.5 6,099.3 729.2 -12,457.0 6,031,840.86 457,378.32 0.00 12,440.09 17,838.8 89.27 314.00 6,156.0 6,099.8 756.2 -12,484.9 6,031,867.92 457,350.53 0.00 12,471.42 Start Dir 3.0/100'17838.80'MD,6156.00'TVD 17,863.3 90.00 314.05 6,156.2 6,100.0 773.2 -12,502.5 6,031,885.00 457,333.00 3.00 12,491.17 ODSN-16L1 v2 T4 17,900.0 91.10 314.05 6,155.8 6,099.6 798.7 -12,528.9 6,031,910.64 457,306.71 3.00 12,520.80 17,966.9 93.11 314.06 6,153.4 6,097.2 845.2 -12,577.0 6,031,957.31 457,258.86 3.00 12,574.73 End Dir 17966.90'MD,6153.40'TVD 18,000.0 93.11 314.06 6,151.6 6,095.4 868.2 -12,600.7 6,031,980.39 457,235.21 0.00 12,601.40 18,100.0 93.11 314.06 6,146.2 6,090.0 937.6 -12,672.5 6,032,050.11 457,163.74 0.00 12,681.96 18,200.0 93.11 314.06 6,140.7 6,084.5 1,007.0 -12,744.3 6,032,119.82 457,092.26 0.00 12,762.52 18,300.0 93.11 314.06 6,135.3 6,079.1 1,076.5 -12,816.0 6,032,189.54 457,020.79 0.00 12,843.08 18,400.0 93.11 314.06 6,129.9 6,073.7 1,145.9 -12,887.8 6,032,259.26 456,949.32 0.00 12,923.64 18,500.0 93.11 314.06 6,124.5 6,068.3 1,215.3 -12,959.5 6,032,328.97 456,877.85 0.00 13,004.20 18,600.0 93.11 314.06 6,119.1 6,062.9 1,284.8 -13,031.3 6,032,398.69 456,806.38 0.00 13,084.76 4/12/2010 3:26:03PM Page 8 COMPASS 2003.16 Build 428 Halliburton Company HALLIBURT0N Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (?) (?) (ft) ft (ft) (ft) (ft) (ft) 6,061.65 18,622.3 93.11 314.06 6,117.8 6,061.6 1,300.2 -13,047.3 6,032,414.23 456,790.44 0.00 13,102.72 Start Dir 3.0/100'18622.30'MD,6117.80'TVD 18,659.3 92.00 314.00 6,116.2 6,060.0 1,325.9 -13,073.8 6,032,440.00 456,764.00 3.00 13,132.52 ODSN-16L1 v2 T5 18,678.2 91.43 314.00 6,115.6 6,059.4 1,339.1 -13,087.5 6,032,453.21 456,750.44 2.99 13,147.81 End Dir 18678.20'MD,6115.60'TVD 18,700.0 91.43 314.00 6,115.1 6,058.9 1,354.2 -13,103.1 6,032,468.41 456,734.82 0.00 13,165.40 18,800.0 91.43 314.00 6,112.6 6,056.4 1,423.7 -13,175.1 6,032,538.14 456,663.21 0.00 13,246.11 18,900.0 91.43 314.00 6,110.1 6,053.9 1,493.1 -13,247.0 6,032,607.87 456,591.59 0.00 13,326.81 19,000.0 91.43 314.00 6,107.6 6,051.4 1,562.5 -13,318.9 6,032,677.61 456,519.97 0.00 13,407.52 19,100.0 91.43 314.00 6,105.1 6,048.9 1,632.0 -13,390.8 6,032,747.34 456,448.35 0.00 13,488.23 19,200.0 91.43 314.00 6,102.6 6,046.4 1,701.4 -13,462.7 6,032,817.07 456,376.74 0.00 13,568.93 19,300.0 91.43 314.00 6,100.1 6,043.9 1,770.9 -13,534.6 6,032,886.81 456,305.12 0.00 13,649.64 19,400.0 91.43 314.00 6,097.6 6,041.4 1,840.3 -13,606.5 6,032,956.54 456,233.50 0.00 13,730.35 19,455.2 91.43 314.00 6,096.2 . 6,040.0 1,878.6 -13,646.2 6,032,995.00 456,194.00 0.00 13,774.86 4 1/2"-ODSN-16L1 v2 T6 Targets Target Name -hit/miss target Dip Angle Dip Dir. TVD +N/-S +E/-W Northing Easting -Shape (?) (?) (ft) (ft) (ft) (ft) (ft) ODSN-16L1 v2 T6 0.00 0.00 6,096.2 1,878.6 -13,646.2 6,032,995.00 456,194.00 -plan hits target -Point ODSN-16L1 v2 T2 0.00 0.00 6,161.2 -1,438.8 -10,214.3 6,029,664.00 459,612.00 -plan hits target -Point ODSN-16L1 v2 T5 0.00 0.00 6,116.2 1,325.9 -13,073.8 6,032,440.00 456,764.00 -plan hits target -Point ODSN-16L1 v2 T1 0.00 0.00 6,146.2 -2,544.3 -9,070.7 6,028,554.00 460,751.00 -plan hits target -Point ODSN-16L1 v2 T3 0.00 0.00 6,136.2 -332.3 -11,357.9 6,030,775.00 458,473.00 -plan hits target -Point ODSN-16L1 v2 T4 0.00 0.00 6,156.2 773.2 -12,502.5 6,031,885.00 457,333.00 -plan hits target -Point 4/12/2010 3:26:03PM Page 9 COMPASS 2003.16 Build 42B Halliburton Company HALLIBURTON Standard Proposal Report Database: .Pioneer Alaska Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 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-16 Survey Calculation Method: Minimum Curvature Wellbore: ODSN-16L1 PN13 Design: ODSN-16L1 PN13 wp02 Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (in) (in) 3,382.4 3,000.0 11 3/4" 11.750 14.500 9,459.5 5,208.0 9 5/8" 9.625 11.750 12,452.1 6,091.2 7" 7.000 8.500 19,455.2 6,096.2 4 1/2" 4.500 6.125 Plan Annotations Measured Vertical Local Coordinates Depth Depth +N/-S +E/-W (ft) (ft) (ft) (ft) Comment 12,475.0 6,094.9 -2,947.1 -8,611.7 Start Dir 3.0/100'12475.00'MD,6094.90'TVD,TFO 180 12,508.0 6,100.4 -2,928.1 -8,638.1 End Dir 12508.00'MD,6100.40'TVD 12,513.0 6,101.3 -2,925.2 -8,642.1 Start Dir 3.0/100'12513.00'MD,6101.30'TVD 12,936.5 6,143.1 -2,652.4 -8,962.1 End Dir 12936.50'MD,6143.10'TVD 13,049.9 6,145.6 -2,572.2 -9,042.3 Start Dir 3.0/100'13049.90'MD,6145.60'TVD 13,089.8 6,146.2 -2,544.2 -9,070.8 End Dir 13089.80'MD,6146.20'TVD 14,662.2 6,161.1 -1,451.4 -10,201.2 Start Dir 3.0/100'14662.20'MD,6161.10'TVD 14,711.0 6,161.0 -1,417.5 -10,236.3 End Dir 14711.00'MD,6161.00'TVD 16,241.2 6,136.4 -353.6 -11,335.9 Start Dir 3.0/100'16241.20'MD,6136.40'TVD 16,296.2 6,136.4 -315.4 -11,375.4 End Dir 16296.20'MD,6136.40'TVD 17,838.8 6,156.0 756.2 -12,484.9 Start Dir 3.0/100'17838.80'MD,6156.00'TVD 17,966.9 6,153.4 845.2 -12,577.0 End Dir 17966.90'MD,6153.40'TVD 18,622.3 6,117.8 1,300.2 -13,047.3 Start Dir 3.0/100'18622.30'MD,6117.80'TVD 18,678.2 6,115.6 1,339.1 -13,087.5 End Dir 18678.20'MD,6115.60'TVD 19,455.2 6,096.2 1,878.7 -13,646.2 Total Depth at 19455.20'MD,6096.20'TVD 4/12/2010 3:26:03PM Page 10 COMPASS 2003.16 Build 428 zi o > or m J o J r. 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'...;ice. !I s c_. •� a ••.�4y� `. z v IC- _■ L.g 1 _ D r f.� •• •• s , ``,"4°: := . • w to '; 0 /' J o•Y o • 1 a O C : I i _ , t •• 6 < O , O r •• •` Z 11$ m N. co_ O • �Ac' II f ro,:'. .. s ••I'�Qk°r Hito • ° ! 0 • ! o 3 o F E 0 • ° ...FF N 7 A ° 0 o y ` g Z o o D IN v r 9 ° 9F 0 t3,) • Q 0 s I,a• 3 2c rn o 2 0 0 ] °p c cb E 0 < < O e 0 7 C o r 9 • F 0 a 0 o 0 B ° F9 0 0 t! o cLs til Z O t= 8 0 d Z O= E F! ' ° 0 FY m U W ! ° sj O O CI .9! 3 °! ° • Sic • 0 0 a 9i o v Oe. ° Nf c'c' ° o0 a . : Cd C crl :0 0 8Ij Ii el 1 is m v° mo6 N � Z U . N CC I 1' • I 1 i 1 1 'i ••V.ni:-irkt boundr' i SE orner o oOOGURUX SITE Protrocted Sections 11 i il at i� Coordinotes I I II 1 N 6028111.04 �' 1� I i 1 E 470989.01 1 .• \ ' i ° P'-�4. , ' Ref. AK BLM :,; • " �i ♦♦ Harrison: Bay Tract�A" �c - a ;,% ��J �. S- (1 JI \ r • •\ / 4 �� QYrshore IctrocE�9c )JBes • �� Jecr Shore ice rood.3.82 111- + PI-1Z y P1 20 to Dcocilruk Cite ♦♦ * PI 7 to P •■ • ■ 4.1 n e c* * s z • n • " �` • Pi-23' / Pi-1 ✓ PI-76 s • , :PI-f7 DS X 6:O.E. " ♦ _ T l';- Roadf to ido ' � L .„ f•7 IKON sii Basis of Location 71 I'" I Bu0 IF I\ ,F-N - DS-3H West Monument Coordinates :'1RSi-315- N 6001016.61 - ;; E 498081.23 STAKED PI INFORMA'11ON ONLY p .i . , - Y6 V i ='•;: �' Ref. Lownsbury & Assoc. r° J Dc� I I < Drawing No. �� - -- 1 NSK 6.01-d672 • cam- '•di"1 I ‘4.. 7 . 40, i • ilip G.Davis :1? `� "', " I D •••••w•' PLO -=- _-�_alr 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: Basis of Location 05204 2 of 4 Alaska State ge Section Line-Qt-et - _-- Well Ng. Y-. X--- Latitude (N) Longltud krV) F,$L DEL Pad Elev, 1 6,031,151.32 469,920.45 70 29 46.24160 150 14 45,46465 3035 1077 13.50 2 ---6-,081,-1-4-6,-35 -469,915,-52 70-29 46.19252 150 19 45,60922 $030 1082 13,50 ----3----5,-0-31,10--,89 -469,910.59 70 29 46.19354 150 14 45.75375 3025 1087 13.50 4 : 6,031,136.46 469,905 67 70 29 46.09485 150.14 45,89799 3020 109 13.50 5 5,031,131.45 459,900-.74 • 7 0 2946.04538 150 14 45,04.252 3015 1097 13,50 I 6 6,031,126,51 - 469,89580 70 29 45.99660 150 14.46,18735 3010 _ 1102 13.50 7 6,031,118.73 469,553,13 7029 45,87039 -150 14 4655879 2997 1115 13.50 8 6,031,108,73 469,878.21 70 29 45,82102 16-04 46,70303 2992 1120 13,50 6,031,103.75 469,873,26 -.--- - 9 70 29 45.77184 150 14 2987 1125 13,50 10 6,031,096.79 469,868.35 70 29 45.72286 150 14 46,99179 2902 1 1130 13.50 - 86.3.39. 11 6,031,093 84 469, 70 29 45.67398 150 14 47,13750 2977 1135 13.50 12 6,031,088.87 469,858.47 70 29 45.62490- 15014 47,28174 2972 1140 13.50 13 6,031,076,05 469,84.5,89 70 29 45.4.9840• 150 14. 47.65286 2960 1152 13,50 14 6,031,071,09 469,840.87 7• 0 29 45,44.932 150 114.47,79770 2955 1157 13,50 15 6,031,066.15 469,835.96 70 29 4,40053 -• 160-14 47,94165 2950 1162 13,50 -mil 10 6,031,0611.18 469,831,04 70 29 46.35146 15014 48/08588 294.5 1167 13.50 - --17 6,031,056,25 469,526,11 70 2045,30277 150 14 48,23042 2940 1172 13.50 6,031,051,27 459,821,18 70 29 45,25359 150 14 48,374.95 2935 1177 13,50 19 6,039,038,52 469,808,50 7• 0 29 45,12768 160 14 48,74668 2922 1189 13,50 20. 6,031,033,50 469,803.59 70 29 4.5,07811 . 150 14 48,59061 2917 1194 13,50 21 6,031,028.53 -469,795,62 70 29 45,02903 150 14 ..4. 2912 9,03632 291 1199 _ 13,50 -_22 - 6,031,023 3.58.- 469,793,07 --70-29 44,95014 160-14 49,1514. 2907 1204 13.50 23 6,031,015,57 469,758,76 70 29 44,93067 15014 49.32537 2902 1209 13:50 24 6,031,013.60 469,753,84 7• 0 29 44,05159 150 14 4.9.4960 2597 1214 - 13,50 _.� s el 0"4"..-" rr' ' 6 . .V d .... .% .7. M.N•... c1. Philip G.Davis o�I{ �.Pj,, No.41104 •a'"/ w \1AA...4" 'X c;.1 ,;.:_l .I '.fit !ifs Note; _,-,.�..tt� , 1, Elevotione ore bored on 9P Mean Sec Level, .. . _.__ - 2: 4QQrdinotee ore boxed on Alocko to Plone Nod 27, Zone 4, 3, All conductor-c ore within Protrocted Section 11. Pioneer- Noturol ?e cuceg 'QE NAME: 0009uruk Drill site conductors DRAWN BY: BL CHECKED EY: MA--) °CATION: Protrocted Section 11 CAS_: N Townehip 13 North Pon9e 7 Eo; t DATE: 7=12=07 Vlrniot Meridiem NANUQ JOE NO, SHEET E CRIPTIQN: As-built Coordinotes 05204 3 of 4 Alaska State , e Section Line Offset Well No. X Latitude (N) Longitude FSL FEL Pad Elev. 25 6,031,128.32 469,943.64 70 29 46.01630 150 14 44.77930 3013 1055 13.50 26 6,031,123.35 469,938.69 70 29 45.96722 150 14 44.92442 3008 1060 13.50 27 6,031,118.33 469,933.76 70 29 45.91765 150 14 45.06895 300 1065 13.50 28 6,031,113.39 469,928.86 70 29 45.86887 150 14 45.21260 2997 1070 13.50 29 6,031,108.44 469,923.95 70 29 45.81999 150 14 45.35655 2992 1075 13.50 30 6,031,103.45 469,919.01 70 29 45.77071 150 14 45.50137 2988 1079 13.50 31 6,031,090.65 469,906.38 70 29 45.64431 150 14 45.87163 2975 1092 13.50 32 6,031,085.68 469,901.39 70 29 45.59523 150 14 46.01793 2970 1097 13.50 33 6,031,080.67 469,896.50 70 29 45.54576 150 14 46.16128 2965 1102 13.50 34 6,031,075.73 469,891.57 70 29 45.49698 150 14 46.30581 2960 1106 13.50 35 6,031,070.76 469,886.60 70 29 45.44789 150 14 46.45152 2955 1111 13.50 36 6,031,065.83 469,881.69 70 29 45.39921 150 14 46.59547 2950 1116 13.50 37 6,031,053.00 469,869.00 70 29 45.27251 150 14 46.96749 2937 1129 13.50 38 6,031,047.99 469,864.14 70 29 45.22304 150 14 47.10995 2932 1134 13.50 39 6,031,043.03 469,859.20 70 29 45.17406 150 14 47.25478 2927 1139 13.50 40 6,031,038.10 469,854.21 70 29 45.12537 150 14 47.40108 2922 1144 13.50 41 6,031,033.05 469,849.29 70 29 45.07551 150 14 47.54530 2917 1149 13.50 42 6,031,028.13 469,844.38 70 29 45.02692 150 14 47.68925 2912 7 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 ���viot%\ SURVEYOR'S CERTIFICATE s 1P:• •.sj- !! I HEREBY CERTIFY THAT I AM h•' ''.�• •• I i PROPERLY REGISTERED AND ' .r s� � I .�.v. a tit••• •TH• .., ; * 0 LICENSED TO PRACTICE LAND SURVEYING IN THE STATE OF `� . . . . / ALASKA AND THAT THIS PLAT .�IJ .Davis / REPRESENTS A SURVEY DONE BY ''' nili�G.Dai o Cr% No.4110-3 :ia`�j ME OR UNDER MY SUPERVISION � � ( yfo•.,•••.»�••.'O °� AND THAT I BELIEVE THAT ALL °.NSF �ti , �=� - p DIMENSIONS AND OTHER DETAILS j<• `y ;Y 1� "` ARE CORRECT AS SUBMITTED TO .' t ortzsI0NAl • 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 Ronge 7 East DATE: 7-12-07 Umiot Meridian NANUQ JOB NO. SHEET DESCRIPTION: As-built Coordinotes 05204 4 of 4 O O I 0, 00 M 1 1 .0 O ..... O N to 0 0 O N- . N. Tim" Ce o LL w V Q 0 i_j [ o CD CD O 1 j o ! O C N O ■7 W Q CC Q. U J o + co W ,- 0Z W 0 O O O CD CD LO . NN><o. M Cr Q • Q O W °O O 1 O O O O O O O O O O O O O O O O • LO O 1.0 O LO CO CO LO LO LO TRANSMITTAL LETTER CHECKLIST WELL NAME Cl�C�" 1,64L _ ��� �' �� /67- 1 7) PTD# l C C`t C v/Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: L x (X✓a POOL: -cam Lk. 4��� A) EC ' °--1 C1 U CL'" r Circle Appropriate Letter/Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (-C, G�iG C// C_,'�� / —1,() (If last two digits in �� API number are Permit No. /C)bS Y. API No. 50-76 -7�(Z�- . between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well . SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce / inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Non-Conventional Please note the following special condition of this permit: Well production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the Commission to obtain advance approval of such water well testing program. Rev: 1/11/2008 L. _i To ItP g o r- E w -a �c o ° Q a) a E a) y w a a) N • co o co ..o • -o °i = n o c C c a a) - E ._ 0) .0 C L (6 c :- O .c0 O C m O o c E N E C E N 0 co a) L «O • t a E. ui a a) O co a o ° O 3 tlj = E O O U 2 N y co �_ E O _o• a) _ U o a U N, a p a N c o @ C I CO C N rn o o w a 2 • L 6 N N -7 O -c as O a 0) '3 0 0 °c' Y E c '3 w cc h- o O U c N 16 O co� co a U co co °" 0 00 N. -O a) - MO fA co 0) N ` O L co O O >> O — n c 0 N co co c c°o 3 .° a = ,. * 3 N Q C a a p > Q3 .0 N N E N r E N > O co- C . a ) O cu N 'N a o 2 W Z 0 ` N co CO O C W 0) 0 0 M rn ° c c ° CO 3 a 'n C N CO p p C - L N o a V N L a o 0 o Qo '° 0 0 a) c c 3 . ooi 0 N 3 0) W co .. C co co C O O Q N C -o a1 c Z J 'C °U co co 0 c E O a 0 N a. N co Y r� r� v a)) -° z a a) C D Q Y 0) 0) C) O C .N- O • N N '7 > .1..T3 c p It) 11) LO = 0 0 .a E N ° O L co N N Q• M a7 Sr) Z Z Z 3 N N M _ a) E Q N- Z O O CO O n O IN a' a O O) O ° N N N •c co N N a N O Q ° O ° o a > 0 °n L N o 'N a°) m ° o 2 T. o 0 0 0 Q 2 3 a a a m 6 �° Q ...7;> a� c c c p. a -0 @ > o M o O N 'C = ai o i� 0 0 0 0 vi n m .@ n n o L 3 coC7 . a) ns a) a c n y 3 E N aXi o C z o Z Z Z@ = g u o 0 0 0 • o a) 0 ° ° o• E . o a c C 0 O O• Z'. p O O O O p m O. > N < co co ° w H O D U U O Z a d o t 2 I 2 W -° 2 a °- L>LI O o co J Q a) a) aN) a)) aa)) aa)) aa)) ai CU aN) aa)) aa)) Q Q Q Q aa)i Q aa)) o o a) aa)) Q aa)) Q ai a) aa)) a) aa)) o Q aN) CO Q Q Q 0 a z >- r >- r >- >- } r r >- >- >- Z Z z z >- z >- z z } r z >- Z >- >- >- >- >- z z >- >- Z z Z >, u N a3 C4 U (7') o C m O a) C E 3 - E a) O U U O C C co#Q O .0 or. ...LL T ` a �Q L O 2k ° 0 c a) U o a 3 E o �_ cn O Q U C C U O --in O L__c o . O E a) 2 J U co a) co N co Q 0 `O a) O ° N O• Q Z O. — O. O. Lo m D C j O (�o. H C It• 0 u's < ..- N f0 -° w U of co CO a) a) a >. E O a D Q = 3 o > as .N 'o 0 co N 0 N o " o N = 2 co 3 > N, a o - o • Z V) • a`) = a) .0 >. .L.• ° o -7° O o cu E ate) (0 'a p co O ('n N �. Y W L O U Z u) a) 7 3 O V) c co L C N D 0- 1f) O < N CO O N °) .. D O "o O _c "0 0 O' C 'O a3 _O Q. D p. 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Z _ a a co 3 ca , as C C 0 7 N N = O N f0 '° 2 0 N .° O _a)O a) L C "O "° "° U N >, N S) L L -° L 0) C O O > p) C - a) 0- a -C N ) U O 0 .0 O T .° O W w a) ETD a) a) a) m .a o C c c '- a) U c c0 -0 -p o N :� - 3 :° 0 N .0 o a) -o c a°) co c E IA o n) n) 3 ° o o c-' n) n) O o = o w ° c — C 0 CO N ° 0 c "'" z °) C 3 U U U I'm O O U 0 E U O >c U a) O 0 — -° a) -o a) ) N °- E 3 O -E 0 O 0 -0 U —-I• O N 2 o 0 0 .0 .5 a) 0 . - a -° a) a ° °' m I- I- H Sr ° co =) d wa Y - o U E co w - ns ai X a`) a 'C a� a� a� 0 0 a a a`) 'Cl-) m o 3 " o o D 2 co 0 W a 0 = 0 O -c ° a o a`s m .( a) o p a 2 cn '= o O a a U a a Z U u) U U (D U Q < 17 o m m (... g a o 0) u) 0 W n O N co V 1p CO N 00 0) 0 N CO V LC) CO N 00 O) 0 N co V U) CD N 00 0) I 0 ,- N co V co CO N co o) ,- N N N N N N N N N N Cr) co co co co co co co co co —• U I 0 O O m oO ON 0 O C A ~16 U W.'., 0 N c) N N O N 0. ° « a) E .,3 N N O 0) Q o V o a a o c a - -°° Q o 0 CD a s a w a 0 a Well History File APPEND' X Infoiuiiation of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history file. To improve the readability of the Well History file and to simplify finding information, information of this nature is accumulated at the end of the file under APPENDIX. No special effort has been made to chronologically organize this category of infor I nation. HALLIBURTON Sperry Drilling END OF WELL REPORT ODSN-16 L1 Oooguruk Development 1 • 1 i - '--...,_ 7 , a qal .� .,�•;.. r..'lam'. Surface Data Logging Services / ./D e ra\D ?0 HALLIBURTON I Sperry Drilling TABLE OF CONTENTS 1 . General Information 2. Daily Summary 3. Morning Reports 4. Bit Record 5. Mud Record 6. Formation Tops 7. Survey Report 8. Days vs. Depth Digital Data to include: Formation Evaluation Logs Halliburton Log Viewer EMF Log Viewer End of Well Report in PDF format ADI Backup PIONEER NATURAL RESOURCES HALLIBURTON I Sperry Drilling GENERAL WELL INFORMATION Company: Pioneer Natural Resources AK Rig: Nabors 19AC Well: ODSK-16 L1 Field: Oooguruk Borough: North Slope Borough State: Alaska Country: United States API Number: 50-703-20620-60-00 Sperry Job Number: AK-AM-0007007266 Job Start Date: 22-June-2010 Spud Date: 19-July-2010 Total Depth: Production Section L1 to 20513.00' MD, 6127.68 TVD North Reference: True Declination: 21.519° Dip Angle: 80.905° Total Field Strength: 57660.00nT Date of Magnetic Data: 19 May 2010 Wellhead Coordinates N: North 70° 29' 45.35" Wellhead Coordinates W: West 150° 14' 48.09" Drill Floor Elevation 56.4' Ground Elevation: 13.6 Permanent Datum: Mean Sea Level SDL Engineers: Daniel Kane, Tom Mansfield, Colby Marks, Mark Lindloff, Ryan Massey SDL Sample Catchers: Herman Lilgreen, David McKechnie Company Geologist: Paul Cozma, Mindaugas Kuzminskas, Jim Stewart, Jaque Ledbetter Company Representatives: Joe Polya, Rod Klepzig, Joey Cortez, Jerry Haberthur Sperry Unit Number: 123 PIONEER NATURAL RESOURCES HALLIBURTON I Sperry Drilling DAILY SUMMARY Begin ODSN-16 L1 7/19/2010 Tripped in to shoe at 12665' MD, pumped high viscosity spacer followed by OBM used in last lateral well. Calibrated gas chromatograph. Displaced 10.2 kill mud and sent to RSC. Max gas from mud swap was 1599 units at 12550' MD. Built trough for lateral hole right above a Siderite stringer and cause bit deflection in an upwards direction. Moved down below stringer and troughed again. Time drilling at 12794' MD at 1-2 ft/hr. 7/20/2010 Changed out pump hose on new CVE system. 45 minutes of downtime while time drilling. Time drilled to 12800' MD with an average of 20 units of gas. Increased ROP to 150 ft/hr by 12854' MD. Average gas throughout interval was 473 units with max gas occurring at 13081' MD for 1100 units. No connection gases and no losses down hole. Drilling ahead at midnight. 7/21/2010 Drilled interval with an average ROP of 223 ft/hr. Increasing torque to 21.9k ft/lbs. Occasional connection gases averaging 1000 units over background. Diminishes to 200 to 700 units over background past 16800' MD. Estimating 23 bbls of washout, however, estimate may be conservative due to the potential for cuttings loading the hole at this low RPM and high ROP. No losses down hole. Drilling ahead at midnight. 7/22/2010 Drilled ahead from 18287' MD to 18820' MD. Began control drilling at 18820' MD with an ROP limit of 175 ft/hr. Drilled to 19283' MD, circulated and conditioned mud while waiting on orders from town. . Drilled ahead to 19571' MD and re-shot survey to confirm 12.89 degree dogleg from 19472' MD survey. Good hole cleaning seen at the shakers as the hole unloaded. Average drilling gas was 2110 unit while max gas was 5947 units at 18359' MD. Connection gas was intermittent at an average of 300-500 units, max connection gas being 700 units. Washout began at 26 bbls for 6.53" hole, however increased as the hole cleaned up with controlled ROP. No losses down hole. Drilling ahead at midnight. 7/23/2010 Drilled to 20312' MD and worked on leaking standpipe. Drilled at ahead to a TD of 20513.00' MD, 6127.68' TVD at 06:47. Circulated and pulled 3 stands back. Circulated 2 bottoms up to clean hole. Began wet short trip to shoe. Showed gain of 17 bbls pulling back to the shoe. Circulate out 7800 units of gas. Began running in hole. Washout estimated to be at 55 bbls with average hole diameter of 6.68". No losses down hole. 7/24/2010 Continued running in the hole to approximately 19419' MD. Gained 22 bbls while tripping in the hole. Washed down last 9 stands with gas increasing with the last 4 stands working from 5000 units to 8000 units. Stop to circulate out gas. Circulated out 9820 units of gas sustained for 30 minutes. Gas dropped out to —3600 units and finally fell to 500 units before continuing to run in hole. While circulating out, the 39 bbls gain observed from the trip returned to zero after circulating out gas cut mud. Ran in 9 stands and circulated up 5300 units of max gas. While pulling out of the hole, hole was taking 7 bbls per 5 stands. MPD lowered the ECD from 10.1 to 9.8. Continued to pull out and losses decreased to 3 bbls per 5 stands. Pulled to shoe and displaced the hole to 10.1 ppg mud. PIONEER NATURAL RESOURCES HALLIBURTON I Sperry Drilling 7/25/2010 Rig down RCD head. Began pulling out of the hole from the shoe, pulled over 38 stands and saw no displacement. Pulled out wet for a few stands and saw no gain. Pulled completely out of the hole and lost 23 bbls. Laid down BHA and picked up HWDP in preparation for 4.5" liner run. Began running in the hole with liner at time of report. 7/26/2010 Continued running in the hole with 4.5" Liner. Consistently losing 1.5 bbls per 10 joints of liner. 7/27/10 Ran 7805' 4 1/2" 12.6#liner on 4" drill pipe. About 2 bbl/hr seepage loss prior to and during liner run. Circulated at 3 bpm once liner was picked up with a max gas of 18 units and losses increasing to about 8 bph. Circulated 1X drill pipe volume at 7" casing shoe at 3 bpm with no observed losses and a max gas of 20 units. Serviced top drive. Continued running liner with no static losses and very minimal running losses. PIONEER NATURAL RESOURCES Customer: Pioneer Natural Res. Report#: 28 HALLIBU -. 1 ON Well: ODSK-16L1 Date: 7/19/2010 Area: Oooguruk 04:00 Depth 12769' Location: North Slope Progress 24 hrs: 0' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Mud Swap Job No.: AK-AM-0007007266 Report For: J, Polya/J.Haberthur Daily Charges $6,097.55 Total Charges: $204,278.74 ROP & Gas: Current Avg 24 hr Max Max @ ft Current Pump & Flow Data: R.O.P. (ft/hr) Flow In (gpm) 72 SPP(psi) 1057 Gas(units) 586 570 1366 Flow In (spm) 21 Gallons/stroke 3.5170 Hole Condition Depth On Bot Hrs Ann Corr Avg Diam PWD Drilling Min Avg Max All Circ 10.80 Min 10.80 Avg 10.80 Max Mud Data: Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (m1/30 min) cP (Ib/100ft2) (volt) (Ibs/bbl) (Porn) 12769' 10.10 10.10 66 4.5 22 13 902 3.24 2.5 17.9 BHA Run # I Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 0.389 47.80 12685' 18700' 6015' 12 95 0-1-ER-A-X-I-CT-TD 700 Sec DBS FXG64 6.125 ' 0.389 12769' Lithology (%): Sd Sst Silt Siltst Cht Clyst Sh Lst Coal Gvl Tuff (current) 100 Gas Breakdown I H2S Data I Sample Line IMax: 'Avg: I Ambient Air Pit Room IMax: 'Avg: Gas(units) Chromatograph(ppm) Depth to to to to to to to to to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas;WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... 24 hr Recap: Finished testing BOPE,M/U BHA 7 and pulse test MWD. Calibrated Top Drive and repaired grabber. RIH. Fill pipe and pulse test MWD at 2200'. RIH filling pipe every 30 stands. Slipped and cut drill line from 1:30 am until 2:30 am. Pulled wear bushing and installed RCD bearing. Circulated mud swap with max gas of 1366 units. daily charge includes 2 sample catchers and 1 ADT engineer Logging Engineer: Ryan Massey/Tom Mansfield * 10000 units= 100%Gas In Air Customer: Pioneer Natural Res. Report#: 29 HALLIBURTON Well: ODSK-16L1 Date: 7/20/2010 Area: Oooguruk 04:00 Depth 12945' Location: North Slope Progress 24 hrs: 176' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Drilling Job No.: AK-AM-0007007266 Report For: J, Polya/J.Haberthur Daily Charges $6,097.55 Total Charges: $210,376.29 ROP & Gas: _ Current Avg 24 hr Max Max @ ft Current Pump & Flow Data: R.O.P. (ft/hr) 150.0 90.0 172.0 12854' Flow In (gpm) 72 SPP (psi) 1057 Gas(units) 350 155 1599 12550 circ Flow In (spm) 21 Gallons/stroke 3.5170 Depth On Bot Hrs Ann Corr Avg Diam Drilling 9.55 Min 9.90 Avg 10.07 Max Hole Condition 12945' 11.96 0 bbls 6.13" PWD All Circ 9.55 Min 9.90 Avg 10.07 Max Mud Data: Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (ml/30 min) cP (Ib/100ft2) (volt) (lbs/bbl) (Porn) % 12794' 7.80 7.80 44 5.6 7 5 1670 2.98 2.3 3.9 BHA Run # I Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 0.389 47.80 12685' 18700' 6015' 12 95 0-1-ER-A-X-I-CT-TD 700 • Sec DBS FXG64 6.125 0.389 11.96 12769' 176' 12 91 Lithoiogy (%): Sd Sst Silt Siltst Cht Clyst Sh Lst Coal Gvl Tuff (current) 100 _ _ ,l Gas Breakdown H2S Data I Sample Line'Max: lAvg: 1 Ambient Air Pit Room !Max: !Avg: 1 Gas(units) Chromatograph(ppm) Depth max avg C1 C2 C3 C4 C5 Type 12761 to 12925 362 90 21907 870 266 79 5 GP to to to i to to to to to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas; WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... 24 hr Recap: Finished circulating mud swap. Max gas from bottoms up at 12550'was 1599 units. Began time drilling trough from I 12761'to 12800'. Drilled ahead w/slowly increasing ROP from 1-2 ft/hr to 150 ft/hr by 12854'. Currently drilling ahead. daily charge includes 2 sample catchers and 1 ADT engineer i Logging Engineer: Ryan Massey/Tom Mansfield * 10000 units= 100%Gas In Air f: Customer: Pioneer Natural Res. Report#: 30 HALLIBURTON Well: ODSK-16L1 Date: 7/21/2010 Area: Oooguruk 04:00 Depth 15581' Location: North Slope Progress 24 hrs: 2636' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Drilling Job No.: AK-AM-0007007266 Report For: J, Polya/J.Haberthur Daily Charges $6,097.55 Total Charges: $216,473.84 ROP & Gas: Current Avg 24 hr Max Max @ ft Current Pump & Flow Data: R.O.P. (ft/hr) 225.0 194.0 432.0 _ 13572' Flow In (gpm) 245 SPP (psi) 2730 Gas(units) 1650 907 2132 15331' Flow In (spm) 70 Gallons/stroke 3.5170 Depth On Bot Hrs Ann Corr Avg Diam Drilling 9.46 Min 9.90_Avg 10.24 Max Hole Condition 12945' 11.96 22 bbls 6.83" PWD All Circ 9.46 Min 9.90 Avg 10.24 Max Mud Data: Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (ml/30 min) cP (Ib/100ft2) (volt) (Ibs/bbl) (Porn) 14945' 7.90 7.90 45 5.4 10 6 1362 3.37 2.6 4.4 BHA Run # I Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 _ 0.389 47.80 12685' 18700' 6015' 1 12 95 0-1-ER-A-X-I-CT-TD 700 Sec DBS FXG64 6.125 0.389 28.50 12769' 2812' 12 135 Lithology (%): Sd Sst Silt Siltst Cht Clyst Sh Lst Coal Gvl Tuff (current) 100 ! Gas Breakdown H2S Data I Sample Line!Max: IAvg: I Ambient Air Pit Room !Max: IAvg: i Gas(units) Chromatograph (ppm) Depth max avg Cl C2 C3 C4 C5 Type 12925 to 13300 1173 592 117731 3956 1163 342 87 BG 13300 to 13852 1979 1005 198727 7091 2220 687 178 BG 13852 to 13852 1375 790 12695 4710 1549 521 139 CG 13852 to 14170 1510 611 146146 5542 1837 645 184 BG 14170 to 14238 1163 793 120345 4819 1631 590 175 BG 14238 to 14238 1192 820 118180 4756 1571 559 165 CG 14238 to 15370 2733 1096 266148 9658 3099 1060 319 BG 15297 to 15297 1643 1450 155191 5918 1971 744 255 CG to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas; WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... 24 hr Recap: Drilled ahead with occasional connection gases averaging 200-300 units over background levels. Average hole size from gas lag estimated to be approximately 6.83". daily charge includes 2 sample catchers and 1 ADT engineer Logging Engineer: Ryan Massey/Tom Mansfield * 10000 units= 100% Gas In Air Customer: Pioneer Natural Res. Report#: 31 HALLIBURTON Well: ODSK-16L1 Date: 7/22/2010 Area: Oooguruk 04:00 Depth 18287' Location: North Slope Progress 24 hrs: 2706' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Drilling Job No.: AK-AM-0007007266 Report For: R.Klepzig/JHaberthur Daily Charges $6,097.55 Total Charges: $222,571.39 ROP & Gas: Current Avg 24 hr Max Max @ ft Current Pump & Flow Data: R.O.P. (ft/hr) 225.0 226.0 484.0 13572' Flow In(gpm) 245 _ SPP(psi) 2925 Gas(units) 3165 1855 5917 15331' Flow In(spm) 70 Gallons/stroke 3.5170 Hole Condition Depth On Bot Hrs Ann Corr Avg Diam PWD Drilling 9.60 Min 10.05 Avg 10.37 Max 18287' 42.11 26 bbls 6.53" All Circ 9.60 Min 10.05 Avg 10.37 Max Mud Data: Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (ml/30 min) cP (Ib/100ft2) (volt) (lbs/bbl) (Porn) % 17390' 7.95 7.95 43 4.6 7 5 1242 6.15 4.75 5.0 BHA Run # I Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 0.389 47.80 12685' 18700' 6015' 12 95 0-1-ER-A-X-I-CT-TD 700 ' Sec DBS FXG64 6.125 0.389 42.11 12769' 5526' . 12 135 Lithology (%): Sd Sst Silt Siltst Cht Clyst Sh Lst Coal Gvl Tuff (current) 100 Gas Breakdown H2S Data I Sample Line IMax: !Avg: I Ambient Air Pit Room !Max: 0 IAvg: 0 Gas(units) Chromatograph (ppm) Depth max avg Cl C2 C3 C4 C5 Type 15297 to 16075 3549 1567 341302 12053 3779 1292 390 BG 16075 to 17163 5917 1839 480246 21503 6910 2271 649 BG 17163 to 18050 4743 2121 435865 15852 4966 1683 518 BG I 15733 to 15733 3544 1457 302115 10993 3543 1213 370 CG 15939 to 15939 2518 1016 235175 9214 3030 1062 338 CG 16228 to 16228 2559 1846 251245 10249 3323 1169 369 CG 17130 to 17130 5917 5280 479837 19785 6162 2031 601 CG 17998 to 17998 1683 1244 113786 5119 1935 885 377 CG to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas;WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... 24 hr Recap: Drilled ahead with torque increasing to 21.9K and occasional connection gases averaging 1000u over background levels,diminishing past 16800'to 200-700 units over background,when present. Average hole size from gas lag estimated to be approximately 6.54"but may be conservative due to volume of cuttings load in hole from high ROP and possible cuttings beds. daily charge includes 2 sample catchers and 1 ADT engineer Logging Engineer: Ryan Massey/Tom Mansfield * 10000 units= 100%Gas In Air Customer: Pioneer Natural Res. Report#: 32 HALLIBURTON Well: ODSK-16L1 Date: 7/23/2010 Area: Oooguruk 04:00 Depth 20312' Location: North Slope Progress 24 hrs: 2025' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Drilling Job No.: AK-AM-0007007266 Report For: R.Klepzig/JHaberthur Daily Charges $6,097.55 Total Charges: $228,668.94 ROP & Gas: Current _ Avg 24 hr Max Max @ ft Current Pump & Flow Data: R.O.P. (ft/hr) na 169.4 383.8 18577' Flow In(gpm) 245 SPP(psi) 3010 Gas(units) na 2760 7439 19886' Flow In(spm) 70 Gallons/stroke 3.5170- Hole Condition Depth On Bot Hrs, Ann Corr Avg Diam PWD Drilling 9.59 Min 10.19 Avg 10.44 Max 20312' 55.7 52 bbls 6.68" All Circ 9.59 Min 10.19 Avg 10.44 Max • Mud Data: Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (ml/30 min) cP (Ib/100ft2) (volt) (lbs/bbl) (Pom) % 19912' 7.95 7.95 44 5.5 8 7 1211 7.77 6 5.0 BHA Run # I Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 0.389 47.80 12685' 18700' 6015' 12 95 0-1-ER-A-X-I-CT-TD 700 Sec DBS FXG64 6.125 0.389 55.71 12769' 7551' 12 135 Lithology (%): Sd Sst Silt Siltst Cht Clyst Sh Lst Coal Gvl Tuff (current) 100 Gas Breakdown H2S Data I Sample Line Max: !Avg: I Ambient Air Pit Room 'Max: 0 Avg: 0 Gas(units) Chromatograph(ppm) Depth max avg C1 C2 C3 C4 C5 Type 18000 to 18500 5947 3086 484443 23124 7982 2750 829 GP 18500 to 19000 5538 3350 298631 11070 3836 1505 552 BG 19000 to 19500 3437 1450 133423 5680 2144 1005 450 BG 19500 to 20000 7439 3441 296361 13735 4765 1737 596 BG 19886 to 19886 7439 5177 482597 16174 5376 1898 637 GP 20000 to 20150 4016 1462 _ 133642 8250 3324 1425 550 BG to to to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas;WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... 24 hr Recap: Drilled ahead from 18287'to 18820'. Began control drilling at 18820'to 175 ft/hr. Drilled to 19283'and circulated and conditioned mud while waiting on orders to drill ahead. Drilled ahead to 19571'and reshot surverys to confirm 12.89 deg dogleg from 19472'survey. Drilled ahead to 20312'and work on leaking standpipe at report time. No mud losses reported and minimal to no connection gases. daily charge includes 2 sample catchers and 1 ADT engineer Logging Engineer: Ryan Massey/Tom Mansfield * 10000 units= 100%Gas In Air Customer: Pioneer Natural Res. Report#: 33 HALLIBURTON Well: ODSK-16L1 Date: 7/24/2010 Area: Oooguruk 04:00 Depth 20513' Location: North Slope Progress 24 hrs: 211' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Tripping Job No.: AK-AM-0007007266 Report For: R.Klepzig/JHaberthur Daily Charges $6,097.55 Total Charges: $234,766.49 ROP &Gas : Current Avg 24 hr Max Max @ ft Current Pump & Flow Data: R.O.P. (ft/hr) na . 138.8 339.8 20316' Flow In (gpm) 155 SPP(psi) 1558 Gas(units) na 1925 4304 20353' Flow In (spm) 44 Gallons/stroke 3.5170 Depth On Bot Hrs Ann Corr Avg Diam Drilling - 9.63 Min 10.15 Avg 10.52 Max- Hole Condition 20513' 57.5 55 bbls 6.69" PWD All Circ 9.95 Min 10.29 Avg 10.52 Max Mud Data: _ Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (m1/30 min) cP (Ib/100ft2) (volt) (Ibs/bbl) (Pom) 19912' 8.00 8.00 43 5.6 9 7 1195 3.50 2.7 5.5 BHA Run # I Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 0.389 47.80 12685' 18700'_ 6015' 12 95 0-1-ER-A-X-I-CT-TD 700 Sec DBS FXG64 6.125 0.389 57.50 12769' 7762' 12 135 Lithoiogy (%): Sd Sst _ Silt _ Siltst Cht Clyst Sh Lst Coal Gvl Tuff (current) 100 Gas Breakdown H2S Data I Sample Line'Max: IAvg: I Ambient Air Pit Room 'Max: 0 IAvg: 0 Gas(units) Chromatograph(ppm) Depth max avg C1 C2 C3 C4 C5 Type 20150 to 20513 4304 2360 375849 13025 4486 1739 610 GP 20150 to 20513 212783 7184 2146 800 338 BG to to to to to to to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas; WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... X24 hr Recap: Continued drilling to TD of 20513'md,6127.7'tvd. Circulated 2X bottoms up pulling 1 stand every hour. Short tripped from 20216'to 12600'while backreaming tight spot from 12885'. Circulated 2X bottoms up with max gas of 7804 units. Serviced rig and slipped and cut drill line. Trip back in hole at report time. Trip displacement showing 20 bbls over calculated displacement upon filling drill pipe. daily charge includes 2 sample catchers and 1 ADT engineer Logging Engineer: Ryan Massey/Tom Mansfield * 10000 units= 100%Gas In Air Customer: Pioneer Natural Res. Report#: 34 HALLIBURTON Well: ODSK-16L1 Date: 7/25/2010 i Area: Oooguruk 04:00 Depth 20513' Location: North Slope Progress 24 hrs: 0' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Tripping j Job No.: AK-AM-0007007266 Report For: R.Klepzig/JHaberthur Daily Charges $6,097.55 Total Charges: $240,864.04 ROP & Gas: Current Avg 24 hr Max Max®ft Current Pump & Flow Data: R.O.P. (ft/hr) na na na na Flow In (gpm) 142 SPP(psi) 1070 Gas(units) na 806 9832 19400 circ Flow In (spm) 40 Gallons/stroke 3.5170 Hole Condition Depth On Bot Hrs Ann Corr Avg Diam PWD Drilling na Min na Avg na Max 20513' 57.5 55 bbls 6.69" All Circ 9.67 Min 10.25 Avg 10.78 Max • Mud Data: Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (ml/30 min) cP (Ib/100ft2) (volt) (Ibs/bbl) (Pom) 20513' 8.00 8.00 43 5.8 9 6 1202 3.37 2.6 5.5 BHA Run # I Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 0.389 47.80 12685' 18700' 6015' 12 95 0-1-ER-A-X-I-CT-TD 700 Sec DBS FXG64 6.125 0.389 57.50 12769' 7762' 12 135 I Lithology (%): Sd Sst Silt Siltst Cht Clyst Sh Lst Coal Gvl Tuff (current) 100 ■ Gas Breakdown H2S Data I Sample Line!Max: Avg: I Ambient Air Pit Room Max: 0 'Avg: 0 Gas(units) Chromatograph(ppm) Depth max avg C1 C2 C3 C4 C5 Type 19400 to circ 9832 na 876232 75627 31821 11214 3002 GP 20213 to circ 6070 na 442976 38350 14937 5566 1609 GP to to to to to to to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas;WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... 24 hr Recap: Continue RIH. Ream f/18570'to 19400'and circulate out gas of 9832 units. Ream from 19400'to 20213'and circ out 6070 units of gas while maintaining 9.8 ppg EMW w/MPD. Spot 302 bbl 7.2+ppg new mud and chase w/129 bbls mud from active. Encountered mud losses while attempting to increase EMW w/MPD to 10.1 ppg. Reduced EMW to 9.8 ppg. POOH to 13085'and spotted 16 bbl 10.1 ppg HiVis spacer and chased out DP w/10.1 ppg mud. POOH to 12665'and displaced the hole to 10.1 ppg mud. Remove RCD at 12527'. 9.25 daily charge includes 2 sample catchers and 1 ADT engineer Logging Engineer: Ryan Massey/Tom Mansfield * 10000 units= 100%Gas In Air I I Customer: Pioneer Natural Res. Report#: 35 HALLIBURTON Well: ODSK-16L1 Date: 7/26/2010 Area: _Oooguruk 04:00 Depth 20513' Location: North Slope Progress 24 hrs: 0' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Run 4 1/2"Liner Job No.: _ AK-AM-0007007266 Report For: R.Klepzig/JHaberthur Daily Charges $6,097.55 Total Charges: $246,961.59 ROP & Gas: Current ' Avg 24 hr Max Max®ft Current Pump & Flow Data: R.O.P. (ft/hr) _ na na na na Flow In(gpm) 115 SPP(psi) 955 Gas(units) na 13 34 circ Flow In(spm) 33 Gallons/stroke 3.5170 Depth On Bot Hrs Ann Corr Avg Diam Drilling na Min na Avg na Max Hole Condition 20513' 57.5 55 bbls 6.69" PWD All Circ na Min na Avg na Max Mud Data: Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (ml/30 min) cP (Ib/100ft2) (volt) (Ibs/bbl) (Pom) % 20513' 10.10 10.10 62 6.4 18 12 1154 6.22 4.8 19.4 BHA Run # Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 0.389 47.80 12685' 18700' 6015' 12 95 0-1-ER-A-X-I-CT-TD 700 Sec DBS FXG64 6.125 0.389 57.53 12761' 20513' 7752' 16 150 0-1-ER-A-X-I-NO-TD Lithology (%): Sd Sst Silt Siltst Cht Clyst Sh Lst Coal Gvl Tuff • (current) 100 10 Gas Breakdown H2S Data I Sample Line'Max: lAvg: I Ambient Air Pit Room 'Max: 0 Avg 0 Gas(units) Chromatograph (ppm) Depth max avg C1 C2 C3 C4 C5 Type to to to to to to to to to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas;WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... 24 hr Recap: Circulated 10.1 ppg mud. POOH w/6 1/8"bit. Download MWD recorded data and L/D BHA. P/U 24 singles of 4"HW DP and standback. R/U and run 4.5"liner. daily charge includes 2 sample catchers and 1 ADT engineer Logging Engineer: Ryan Massey/Tom Mansfield * 10000 units= 100%Gas In Air Customer: Pioneer Natural Res. Report#: 36 HALLIBURTON Well: ODSK-16L1 Date: 7/27/2010 Area: Oooguruk 04:00 Depth 20513' Location: North Slope Progress 24 hrs: 0' Sperry Drilling Services Rig: Nabors 19AC Rig Activity: Run 4 1/2"Liner Job No.: AK-AM-0007007266 Report For: R.Klepzig/JHaberthur Daily Charges $3,999.18 Total Charges: $251,249.90 ROP & Gas: Current Avg 24 hr Max _ Max @ ft Current Pump & Flow Data: R.O.P. (ft/hr) na na na na Flow In (gpm) na SPP(psi) na Gas(units) na 18 20 _ circ Flow In (spm) na Gallons/stroke 3.5170 Depth On Bot Hrs Ann Corr Avg Diam Drilling na Min na Avg na Max Hole Condition 20513' 57.5 55 bbls 6.69" PWD All Circ na Min na Avg na Max • Mud Data: Density(ppg) Viscosity HTHP PV YP Elec Stab Lime Alkal Cor Solids Depth ft in out (sec/qt) (ml/30 min) cP (Ib/100ft2) (volt) (lbs/bbl) (Pom) % 20513' 10.10 10.10 61 6.2 18 11 1142 5.18 4 19.3 BHA Run # I Bit Type Size TFA Hours Depth in/out Footage WOB RPM Condition 600 Sec DBS FXG64 6.125 0.389 47.80 12685' 1 18700' 6015' 12 95 0-1-ER-A-X-I-CT-TD 700 Sec DBS FXG64 6.125 0.389 57.53 12761' 20513' 7752' 16 150 0-1-ER-A-X-I-NO-TD Lithology (%): Sd Sst Silt Siltst Cht Clyst Sh Lst Coal Gvl Tuff (current) 100 Gas Breakdown H2S Data I Sample Line'Max: 'Avg: I Ambient Air Pit Room 'Max: 0 lAvg: 0 Gas(units) Chromatograph (ppm) Depth max avg C1 C2 C3 C4 C5 Type to to 11 to to to to to to to Gas Type abreviations: BG-Background Gas; GP-Gas Peak; CG-Connection Gas;WTG-Wiper Trip Gas; POG-Pumps Off Gas; PG-Produced Gas; RG-Ream Gas; T---Trip...; F---Formation...; E---Early... 24 hr Recap: Ran 7805'4 1/2"12.6#liner on 4"drill pipe. About 2 bbl/hr seepage loss prior to and during liner run. Circulated at 3 bpm once liner was picked up with a max gas of 18 units and losses increasing to about 8 bph. Circulated 1X drill pipe volume at 7"casing shoe at 3 bpm with no observed losses and a max gas of 20 units. Serviced top drive. Continued running liner with no static losses and very minimal running losses. Sample catchers and day engineer left island,no ADT charge. Logging Engineer: Tom Mansfield * 10000 units= 100%Gas In Air J O ,0 _x Z E n N n 0 Y F- H Y fl a O 0 0 O O O j .c N O 3, t ,Y N 0 N O O N f0 N O Z a CO n r Z LIJ 0 I- o Q Q ° U 2 a V w D x ° 2 a a W m w Z 11 o 2 a ( x • co v O "' J N LL y . V 3 O tl x o0 ce i@• 3 K • Z m o n. E o m d -0 (4 2 D 4 `m m Y O co L. 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N 0) a) N N N N C V II d 6 co V CO (O (O CO V N I- cE N N V (O 6 (O (D (O O N ct = N N N N N CO M 0 m o N0° � � v � (� N O N N N N a ° Zia- m m 0 cc ... o N co N r r CO NI } r IIIII 1:3 n TS ED Oi r CO O) (n CO 3 0 N V -4- M V CO M N a 0 a� M 11 r • < V V V V V V (D (O U p, m `_ V 10 „°m °m m m oo °o ° ° NW ~ v C� !fir W n f� N- N h eD au O O C1 `� i .1 {a CY 73 � _c c � L _ V (O.O .N- co s- s- CO • 0 7 .1 as rn v (O U) U pp CO 0 `� N O) co O) 0 N N (O Oy O ..- N N N N OS 0 • V V r- Of "4.; 3333333Z m O N CO (n (O N N N N N N N HALLIBURTON Sperry Oriinng ODSN-16L1 Formation Tops Marker MD INC AZ TVD Top Permafrost 841.00 9.43 269.37 837.76 Base Permafrost 1707.00 23.37 280.99 1667.44 Top West Sak 2415.00 39.24 254.38 2285.36 Tuffaceous Shale 3470.00 64.43 240.25 2941.65 SCP 3589.35 66.39 241.02 2990.89 Brook 28 6741.00 71.60 237.69 4259.35 Torok Top 8823.00 67.72 243.22 5002.97 Blackl_dtne fault not seen Torok Base 9418.00 66.74 244.36 5233.66 ICP1 9453.00 67.30 244.30 5247.40 Violet3_dtne fault not seen Top HRZ 10762.00 70.33 260.54 5742.82 Base HRZ 11163.00 71.96 278.82 5875.87 Kalubik Marker 11450.00 74.68 288.64 5957.27 Top Kup C 11686.00 77.56 296.45 6014.42 LCU 11695.00 77.65 296.62 6016.35 T1 12390.00 80.39 309.01 6139.71 BCU 12400.00 80.34 309.01 6141.39 Top Nuiqsut 12633.00 80.24 309.68 6181.32 Top Nuiq::Nuiq_1_D1 12651.00 80.53 309.96 6184.32 ICP2 12665.00 80.78 310.16 6186.60 ODSN-16 L1 sidetrack 12761.00 82.35 312.79 6200.67 T1(Invert#1-D1) 12994.22 90.00 310.54 6221.21 T2(Revert#1-U2) 13920.96 90.00 308.91 6195.00 T3a(Fault) 14960.00 87.88 313.18 6206.76 Nuiq_1::Nuiq_2_D3 15050.00 88.31 313.71 6209.89 T3(Invert#2-D3) 15105.32 90.00 314.04 6210.92 Nuiq_2::Nuiq_1_U4 15220.00 92.98 314.26 6206.91 T4(Revert#2-U4) 16075.54 90.00 316.03 6176.70 T5(Invert#3-D5) 17163.06 90.01 317.24 6186.13 Nuiq_1::Top Nuiq_U6 18280.00 92.53 308.01 6164.19 T6(Revert#3-U6) 18356.55 90.00 308.90 6162.61 Top Nuiq::Nuiq_1_D7 18425.00 89.08 310.21 6163.16 T7(Invert#4-D7) 19245.00 90.00 315.86 6175.22 Nuiq_1::Top Nuiq_U8 20312.00 95.35 315.57 6145.60 T8-TD PIONEER NATURAL RESOURCES• Well Planning - Pioneer - Oooguruk Oooguruk Development Oooguruk Drill Site ODSN-16L1 Permit to Drill: 210-0530 API: 50-703-20620-00-60 Sperry Clrillinc, Services Definitive Survey Report 27 July, 2010 I HALLIBURTON Sperry Drilling Services Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Project Oooguruk Development Map System: US State Plane 1927(Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927(NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Well ODSN-16-Slot ODS-16 Well Position +N/-S 0.00 ft Northing: 6,031,061.18 ft Latitude: 70°29'45.351 N +E/-W 0.00 ft Easting: 469,831.04 ft Longitude: 150° 14'48.086 W Position Uncertainty 0.00 ft Wellhead Elevation: ft Ground Level: 13.50 ft Wellbore ODSN-16L1 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (?) (?) (nT) IGRF200510 12/31/2009 21.99 80.81 57,759 Design ODSN-16L1 PN13 Audit Notes: Version: 1.0 Phase: ACTUAL Tie On Depth: 12,761.00 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (?) 42.70 0.00 0.00 255.96 Survey Program Date 7/27/2010 From To (ft) (ft) Survey(Wellbore) Tool Name Description Survey Date 150.00 1,046.00 ODSN-16 Gyro(ODSN-16) SR-Gyro-SS Fixed:v2:surface readout gyro single shot 5/21/2010 1: 1,145.33 3,537.45 ODSN-16 MWD 1 (ODSN-16) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 5/22/2010 1: 3,655.38 9,439.50 ODSN-16 MWD2(ODSN-16) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 6/14/2010 1: 9,471.18 12,637.91 ODSN-16 MWD3(ODSN-16) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 6/23/2010 1: 12,682.19 12,761.00 ODSN-16 MWD 4(ODSN-16) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 7/8/2010 12: 12,788.92 20,468.57 ODSN-16L1 MWD 5(ODSN-16L1) MWD+IFR2+MS+sag Fixed:v2:IIFR dec&3-axis correction+sag 7/20/2010 1: Survey Map Map Vertical MD Inc Azi TVD TVDSS +N/-S +EI-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°1100') (ft) Survey Tool Name 42.70 0.00 0.00 42.70 -13.50 0.00 0.00 6,031,061.18 469,831.04 0.00 0.00 UNDEFINED 150.00 0.30 301.52 150.00 93.80 0.15 -0.24 6,031,061.33 469,830.80 0.28 0.20 SR-Gyro-SS(1) 171.00 0.19 326.78 171.00 114.80 0.21 -0.31 6,031,061.39 469,830.73 0.72 0.25 SR-Gyro-SS(1) 204.00 0.61 283.74 204.00 147.80 0.29 -0.51 6,031,061.48 469,830.53 1.48 0.42 SR-Gyro-SS(1) 234.00 0.89 287.53 234.00 177.80 0.40 -0.88 6,031,061.58 469,830.16 0.95 0.76 SR-Gyro-SS(1) 265.00 1.24 286.67 264.99 208.79 0.57 -1.44 6,031,061.76 469,829.61 1.13 1.25 SR-Gyro-SS(1) 323.00 1.90 297.15 322.97 266.77 1.19 -2.89 6,031,062.38 469,828.15 1.24 2.52 SR-Gyro-SS(1) 354.00 2.32 308.63 353.95 297.75 1.82 -3.84 6,031,063.01 469,827.21 1.92 3.28 SR-Gyro-SS(1) 446.00 5.14 327.61 445.75 389.55 6.46 -7.50 6,031,067.67 469,823.56 3.31 5.71 SR-Gyro-SS(1) 477.00 6.13 330.91 476.60 420.40 9.08 -9.05 6,031,070.29 469,822.03 3.36 6.58 SR-Gyro-SS(1) 7/27/2010 2:55:12PM Page 2 COMPASS 2003.16 Build 428 Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey Map Map Vertical MD Inc Azi TVD TVDSS +NI-S +EI-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°1100) (ft) Survey Tool Name 508.00 6.69 330.43 507.40 451.20 12.09 -10.75 6,031,073.32 469,820.34 1.81 7.49 SR-Gyro-SS(1) 538.00 6.52 326.15 537.20 481.00 15.03 -12.56 6,031,076.26 469,818.54 1.74 8.53 SR-Gyro-SS(1) 570.00 5.78 319.04 569.02 512.82 17.75 -14.63 6,031,078.99 469,816.49 3.31 9.88 SR-Gyro-SS(1) 602.00 5.50 309.15 600.87 544.67 19.94 -16.87 6,031,081.19 469,814.25 3.16 11.53 SR-Gyro-SS(1) 633.00 5.35 300.65 631.73 575.53 21.61 -19.27 6,031,082.87 469,811.86 2.63 13.45 SR-Gyro-SS(1) 665.00 5.69 284.33 663.58 607.38 22.77 -22.09 6,031,084.04 469,809.05 5.00 15.90 SR-Gyro-SS(1) 697.00 6.90 269.63 695.39 639.19 23.15 -25.55 6,031,084.43 469,805.59 6.27 19.17 SR-Gyro-SS(1) 729.00 8.01 261.86 727.12 670.92 22.82 -29.68 6,031,084.12 469,801.46 4.68 23.25 SR-Gyro-SS(1) 792.00 9.20 264.17 789.41 733.21 21.69 -39.03 6,031,083.02 469,792.10 1.97 32.60 SR-Gyro-SS(1) 855.00 9.49 270.85 851.57 795.37 21.25 -49.24 6,031,082.63 469,781.90 1.78 42.61 SR-Gyro-SS(1) 920.00 9.49 273.41 915.69 859.49 21.65 -59.94 6,031,083.07 469,771.19 0.65 52.90 SR-Gyro-SS(1) 982.00 8.78 275.65 976.90 920.70 22.42 -69.75 6,031,083.88 469,761.38 1.28 62.23 SR-Gyro-SS(1) 1,046.00 9.77 276.57 1,040.06 983.86 23.52 -80.01 6,031,085.02 469,751.13 1.56 71.91 SR-Gyro-SS(1) 1,145.33 11.80 282.23 1,137.63 1,081.43 26.64 -98.31 6,031,088.21 469,732.85 2.30 88.91 MWD+IFR2+MS+sag(2) 1,188.33 12.72 283.58 1,179.65 1,123.45 28.68 -107.21 6,031,090.29 469,723.96 2.24 97.04 MWD+IFR2+MS+sag(2) 1,252.64 14.87 284.03 1,242.10 1,185.90 32.35 -122.10 6,031,094.02 469,709.09 3.35 110.60 MWD+IFR2+MS+sag(2) 1,300.07 17.36 284.10 1,287.67 1,231.47 35.54 -134.87 6,031,097.27 469,696.33 5.25 122.21 MWD+IFR2+MS+sag(2) 1,346.71 18.20 283.91 1,332.08 1,275.88 38.99 -148.69 6,031,100.77 469,682.53 1.81 134.78 MWD+IFR2+MS+sag(2) 1,394.22 18.11 283.56 1,377.22 1,321.02 42.51 -163.07 6,031,104.34 469,668.16 0.30 147.88 MWD+IFR2+MS+sag(2) 1,441.64 19.76 282.84 1,422.08 1,365.88 46.02 -178.05 6,031,107.91 469,653.20 3.51 161.56 MWD+IFR2+MS+sag(2) 1,489.48 21.66 283.06 1,466.82 1,410.62 49.81 -194.53 6,031,111.77 469,636.73 3.97 176.63 MWD+IFR2+MS+sag(2) 1,536.51 22.50 283.30 1,510.40 1,454.20 53.84 -211.75 6,031,115.87 469,619.53 1.80 192.35 MWD+IFR2+MS+sag(2) 1,631.93 22.94 283.24 1,598.42 1,542.22 62.30 -247.62 6,031,124.48 469,583.70 0.46 225.10 MWD+IFR2+MS+sag(2) 1,727.80 23.49 280.37 1,686.53 1,630.33 70.02 -284.60 6,031,132.34 469,546.76 1.31 259.10 MWD+IFR2+MS+sag(2) 1,822.79 24.21 279.79 1,773.41 1,717.21 76.74 -322.42 6,031,139.22 469,508.97 0.80 294.15 MWD+IFR2+MS+sag(2) 1,918.51 26.86 277.54 1,859.77 1,803.57 82.91 -363.20 6,031,145.56 469,468.21 2.95 332.22 MWD+IFR2+MS+sag(2) 2,012.15 27.92 271.27 1,942.93 1,886.73 86.18 -406.10 6,031,148.99 469,425.33 3.28 373.05 MWD+IFR2+MS+sag(2) 2,107.08 29.08 267.60 2,026.36 1,970.16 85.70 -451.37 6,031,148.70 469,380.06 2.21 417.08 MWD+IFR2+MS+sag(2) 2,202.50 29.65 265.60 2,109.52 2,053.32 82.92 -498.08 6,031,146.11 469,333.35 1.19 463.06 MWD+IFR2+MS+sag(2) 2,297.72 33.10 260.49 2,190.82 2,134.62 76.81 -547.23 6,031,140.21 469,284.19 4.57 512.23 MWD+IFR2+MS+sag(2) 2,393.34 38.29 255.72 2,268.47 2,212.27 65.18 -601.73 6,031,128.80 469,229.64 6.16 567.93 MWD+IFR2+MS+sag(2) 2,487.32 42.41 249.91 2,340.10 2,283.90 47.10 -659.76 6,031,110.95 469,171.54 5.93 628.61 MWD+IFR2+MS+sag(2) 2,583.64 44.65 246.58 2,409.94 2,353.74 22.49 -721.34 6,031,086.59 469,109.87 3.33 694.32 MWD+IFR2+MS+sag(2) 2,679.10 44.34 243.31 2,478.04 2,421.84 -5.83 -781.93 6,031,058.52 469,049.17 2.42 759.97 MWD+IFR2+MS+sag(2) 2,774.32 47.25 240.34 2,544.43 2,488.23 -38.09 -842.06 6,031,026.51 468,988.92 3.79 826.13 MWD+IFR2+MS+sag(2) 2,869.29 48.19 240.55 2,608.32 2,552.12 -72.75 -903.18 6,030,992.10 468,927.66 1.00 893.84 MWD+IFR2+MS+sag(2) 2,964.74 49.87 239.83 2,670.90 2,614.70 -108.58 -965.71 6,030,956.53 468,864.99 1.85 963.19 MWD+IFR2+MS+sag(2) 3,059.01 52.69 240.26 2,729.86 2,673.66 -145.30 -1,029.43 6,030,920.08 468,801.13 3.01 1,033.92 MWD+IFR2+MS+sag(2) 3,153.58 55.92 239.93 2,785.04 2,728.84 -183.59 -1,096.00 6,030,882.06 468,734.42 3.43 1,107.79 MWD+IFR2+MS+sag(2) 3,249.36 59.06 240.40 2,836.51 2,780.31 -223.76 -1,166.06 6,030,842.18 468,664.20 3.30 1,185.50 MWD+IFR2+MS+sag(2) 7/272010 2:55:12PM Page 3 COMPASS 2003.16 Build 42B Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey Map Map Vertical MD Inc Azi ND TVDSS +N/-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°/100') (ft) Survey Tool Name 3,343.87 60.83 240.49 2,883.84 2,827.64 -264.11 -1,237.21 6,030,802.12 468,592.89 1.87 1,264.32 MWD+IFR2+MS+sag(2) 3,439.02 63.71 240.05 2,928.11 2,871.91 -305.88 -1,310.34 6,030,760.66 468,519.60 3.05 1,345.40 MWD+IFR2+MS+sag(2) 3,537.45 65.99 240.68 2,969.94 2,913.74 -349.92 -1,387.78 6,030,716.93 468,441.99 2.39 1,431.21 MWD+IFR2+MS+sag(2) 3,655.38 66.89 241.45 3,017.07 2,960.87 -402.22 -1,482.38 6,030,665.02 468,347.18 0.97 1,535.68 MWD+IFR2+MS+sag(3) 3,750.54 66.27 240.80 3,054.90 2,998.70 -444.39 -1,558.85 6,030,623.17 468,270.56 0.90 1,620.09 MWD+IFR2+MS+sag(3) 3,848.74 63.88 241.13 3,096.28 3,040.08 -487.61 -1,636.70 6,030,580.27 468,192.54 2.45 1,706.11 MWD+IFR2+MS+sag(3) 3,939.95 62.68 240.80 3,137.29 3,081.09 -527.15 -1,707.93 6,030,541.02 468,121.15 1.35 1,784.80 MWD+IFR2+MS+sag(3) 4,035.58 61.68 240.84 3,181.92 3,125.72 -568.38 -1,781.78 6,030,500.09 468,047.15 1.05 1,866.45 MWD+IFR2+MS+sag(3) 4,130.29 59.77 240.96 3,228.23 3,172.03 -608.56 -1,853.96 6,030,460.21 467,974.81 2.02 1,946.22 MWD+IFR2+MS+sag(3) 4,225.69 57.33 236.90 3,278.02 3,221.82 -650.51 -1,923.66 6,030,418.55 467,904.95 4.44 2,024.02 MWD+IFR2+MS+sag(3) 4,273.68 57.30 236.98 3,303.93 3,247.73 -672.55 -1,957.51 6,030,396.65 467,871.01 0.15 2,062.21 MWD+IFR2+MS+sag(3) 4,321.17 58.02 240.04 3,329.34 3,273.14 -693.50 -1,991.72 6,030,375.84 467,836.72 5.65 2,100.48 MWD+IFR2+MS+sag(3) 4,416.19 59.08 242.89 3,378.93 3,322.73 -732.20 -2,062.93 6,030,337.43 467,765.37 2.79 2,178.95 MWD+IFR2+MS+sag(3) 4,511.79 59.14 244.53 3,428.01 3,371.81 -768.54 -2,136.48 6,030,301.40 467,691.68 1.47 2,259.12 MWD+IFR2+MS+sag(3) 4,609.03 57.85 245.14 3,478.82 3,422.62 -803.79 -2,211.51 6,030,266.45 467,616.51 1.43 2,340.47 MWD+IFR2+MS+sag(3) 4,703.61 56.93 245.47 3,529.79 3,473.59 -837.08 -2,283.90 6,030,233.46 467,544.00 1.02 2,418.76 MWD+IFR2+MS+sag(3) 4,797.84 57.02 246.71 3,581.15 3,524.95 -869.10 -2,356.12 6,030,201.74 467,471.65 1.11 2,496.60 MWD+IFR2+MS+sag(3) 4,892.37 58.12 247.66 3,631.84 3,575.64 -900.03 -2,429.66 6,030,171.11 467,397.99 1.44 2,575.45 MWD+IFR2+MS+sag(3) 4,988.58 60.05 249.52 3,681.27 3,625.07 -930.15 -2,506.50 6,030,141.31 467,321.03 2.60 2,657.30 MWD+IFR2+MS+sag(3) 5,082.57 62.89 248.01 3,726.16 3,669.96 -960.07 -2,583.46 6,030,111.70 467,243.97 3.33 2,739.22 MWD+IFR2+MS+sag(3) 5,178.62 66.26 245.43 3,767.40 3,711.20 -994.37 -2,663.11 6,030,077.73 467,164.18 4.27 2,824.81 MWD+IFR2+MS+sag(3) 5,273.64 69.12 242.69 3,803.47 3,747.27 -1,032.83 -2,742.13 6,030,039.59 467,085.01 4.02 2,910.81 MWD+IFR2+MS+sag(3) 5,369.40 70.56 238.46 3,836.49 3,780.29 -1,076.99 -2,820.40 6,029,995.75 467,006.58 4.41 2,997.45 MWD+IFR2+MS+sag(3) 5,466.06 72.06 238.73 3,867.46 3,811.26 -1,124.70 -2,898.55 6,029,948.36 466,928.24 1.57 3,084.84 MWD+IFR2+MS+sag(3) 5,560.17 72.18 239.23 3,896.36 3,840.16 -1,170.86 -2,975.30 6,029,902.52 466,851.31 0.52 3,170.50 MWD+IFR2+MS+sag(3) 5,654.42 72.40 238.80 3,925.03 3,868.83 -1,217.08 -3,052.27 6,029,856.62 466,774.16 0.49 3,256.39 MWD+IFR2+MS+sag(3) 5,749.74 72.51 239.11 3,953.76 3,897.56 -1,263.95 -3,130.14 6,029,810.07 466,696.11 0.33 3,343.30 MWD+IFR2+MS+sag(3) 5,844.90 71.98 238.98 3,982.78 3,926.58 -1,310.57 -3,207.86 6,029,763.78 466,618.21 0.57 3,430.01 MWD+IFR2+MS+sag(3) 5,941.02 72.00 241.13 4,012.50 3,956.30 -1,356.19 -3,287.06 6,029,718.48 466,538.83 2.13 3,517.92 MWD+IFR2+MS+sag(3) ' 6,035.60 72.49 241.32 4,041.34 3,985.14 -1,399.55 -3,366.02 6,029,675.44 466,459.71 0.55 3,605.03 MWD+IFR2+MS+sag(3) 6,130.34 72.14 241.97 4,070.12 4,013.92 -1,442.42 -3,445.45 6,029,632.90 466,380.12 0.75 3,692.50 MWD+IFR2+MS+sag(3) 6,225.81 71.89 242.69 4,099.60 4,043.40 -1,484.59 -3,525.87 6,029,591.06 466,299.53 0.76 3,780.74 MWD+IFR2+MS+sag(3) 6,321.79 72.07 239.78 4,129.30 4,073.10 -1,528.50 -3,605.87 6,029,547.48 466,219.37 2.89 3,869.01 MWD+IFR2+MS+sag(3) 6,415.89 71.89 238.41 4,158.41 4,102.21 -1,574.46 -3,682.64 6,029,501.83 466,142.41 1.40 3,954.64 MWD+IFR2+MS+sag(3) 6,511.86 72.12 237.37 4,188.06 4,131.86 -1,622.98 -3,759.95 6,029,453.64 466,064.91 1.06 4,041.42 MWD+IFR2+MS+sag(3) 6,608.39 72.02 237.64 4,217.78 4,161.58 -1,672.32 -3,837.42 6,029,404.62 465,987.26 0.29 4,128.54 MWD+IFR2+MS+sag(3) 6,702.68 71.56 237.62 4,247.24 4,191.04 -1,720.27 -3,913.07 6,029,356.97 465,911.42 0.49 4,213.56 MWD+IFR2+MS+sag(3) 6,797.54 71.67 237,80 4,277.16 4,220.96 -1,768.36 -3,989.16 6,029,309.20 465,835.14 0.21 4,299.06 MWD+IFR2+MS+sag(3) 6,892.41 71.98 237.49 4,306.75 4,250.55 -1,816.60 -4,065.31 6,029,261.28 465,758.81 0.45 4,384.63 MWD+IFR2+MS+sag(3) 6,989.68 71.16 238.89 4,337.51 4,281.31 -1,865.24 -4,143.72 6,029,212.96 465,680.20 1.60 4,472.51 MWD+IFR2+MS+sag(3) 7/272010 2.55:12PM Page 4 COMPASS 2003.16 Build 42B Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey Map Map Vertical MD Inc Azi TVD TVDSS +N/-S +E/-W Northing Easting DLS Section (ft) (�) (�) (ft) (ft) (ft) (ft) (ft) (ft) (°/100'1 (ft) Survey Tool Name 7,083.92 71.13 241.11 4,367.97 4,311.77 -1,909.83 -4,220.95 6,029,168.69 465,602.80 2.23 4,558.25 MWD+IFR2+MS+sag(3) 7,177.83 71.53 242.56 4,398.03 4,341.83 -1,951.82 -4,299.38 6,029,127.02 465,524.21 1.52 4,644.52 MWD+IFR2+MS+sag(3) 7,272.54 71.30 243.15 4,428.21 4,372.01 -1,992.78 -4,379.27 6,029,086.39 465,444.17 0.64 4,731.96 MWD+IFR2+MS+sag(3) 7,368.80 70.98 244.21 4,459.33 4,403.13 -2,033.17 -4,460.91 6,029,046.34 465,362.36 1.09 4,820.97 MWD+IFR2+MS+sag(3) 7,464.11 71.06 244.91 4,490.33 4,434.13 -2,071.88 -4,542.30 6,029,007.96 465,280.83 0.70 4,909.32 MWD+IFR2+MS+sag(3) 7,558.96 70.81 245.68 4,521.31 4,465.11 -2,109.35 -4,623.74 6,028,970.82 465,199.24 0.81 4,997.42 MWD+IFR2+MS+sag(3) 7,654.55 69.23 243.41 4,553.98 4,497.78 -2,147.95 -4,704.85 6,028,932.56 465,117.99 2.78 5,085.47 MWD+IFR2+MS+sag(3) 7,749.02 68.38 243.48 4,588.13 4,531.93 -2,187.33 -4,783.64 6,028,893.50 465,039.05 0.90 5,171.46 MWD+IFR2+MS+sag(3) 7,844.97 67.01 244.56 4,624.55 4,568.35 -2,226.22 -4,863.43 6,028,854.94 464,959.10 1.77 5,258.30 MWD+IFR2+MS+sag(3) 7,940.32 66.43 244.19 4,662.23 4,606.03 -2,264.09 -4,942.41 6,028,817.39 464,879.99 0.71 5,344.11 MWD+IFR2+MS+sag(3) 8,036.80 66.82 243.65 4,700.51 4,644.31 -2,303.03 -5,021.95 6,028,778.78 464,800.29 0.65 5,430.72 MWD+IFR2+MS+sag(3) 8,133.16 66.92 243.13 4,738.36 4,682.16 -2,342.72 -5,101.18 6,028,739.42 464,720.91 0.51 5,517.21 MWD+IFR2+MS+sag(3) 8,222.16 67.14 242.86 4,773.10 4,716.90 -2,379.93 -5,174.19 6,028,702.51 464,647.76 0.37 5,597.07 MWD+IFR2+MS+sag(3) 8,319.97 67.22 242.46 4,811.03 4,754.83 -2,421.33 -5,254.27 6,028,661.43 464,567.52 0.39 5,684.81 MWD+IFR2+MS+sag(3) 8,416.55 67.14 242.76 4,848.49 4,792.29 -2,462.29 -5,333.31 6,028,620.81 464,488.32 0.30 5,771.42 MWD+IFR2+MS+sag(3) 8,511.37 67.80 243.75 4,884.82 4,828.62 -2,501.70 -5,411.52 6,028,581.72 464,409.96 1.19 5,856.86 MWD+IFR2+MS+sag(3) 8,604.66 67.88 244.29 4,920.01 4,863.81 -2,539.55 -5,489.19 6,028,544.19 464,332.14 0.54 5,941.39 MWD+IFR2+MS+sag(3) 8,702.64 67.51 244.46 4,957.20 4,901.00 -2,578.75 -5,570.92 6,028,505.32 464,250.26 0.41 6,030.20 MWD+IFR2+MS+sag(3) 8,796.40 67.74 243.44 4,992.89 4,936.69 -2,616.82 -5,648.81 6,028,467.57 464,172.22 1.04 6,115.00 MWD+IFR2+MS+sag(3) 8,893.58 67.67 242.62 5,029.76 4,973.56 -2,657.60 -5,728.95 6,028,427.12 464,091.93 0.78 6,202.64 MWD+IFR2+MS+sag(3) 8,986.13 67.27 242.51 5,065.22 5,009.02 -2,696.99 -5,804.82 6,028,388.04 464,015.91 0.45 6,285.80 MWD+IFR2+MS+sag(3) 9,081.69 67.22 242.57 5,102.18 5,045.98 -2,737.63 -5,883.02 6,028,347.73 463,937.56 0.08 6,371.52 MWD+IFR2+MS+sag(3) 9,179.21 67.29 243.50 5,139.89 5,083.69 -2,778.41 -5,963.17 6,028,307.28 463,857.24 0.88 6,459.17 MWD+IFR2+MS+sag(3) 9,271.78 66.93 243.43 5,175.89 5,119.69 -2,816.50 -6,039.47 6,028,269.49 463,780.80 0.40 6,542.44 MWD+IFR2+MS+sag(3) 9,368.67 66.59 244.26 5,214.12 5,157.92 -2,855.75 -6,119.38 6,028,230.58 463,700.74 0.86 6,629.48 MWD+IFR2+MS+sag(3) 9,439.50 66.81 244.40 5,242.14 5,185.94 -2,883.93 -6,178.01 6,028,202.64 463,642.00 0.36 6,693.20 MWD+IFR2+MS+sag(3) 9,471.18 67.96 244.16 5,254.32 5,198.12 -2,896.62 -6,204.36 6,028,190.05 463,615.60 3.70 6,721.84 MWD+IFR2+MS+sag(4) 9,502.29 68.29 244.69 5,265.91 5,209.71 -2,909.08 -6,230.40 6,028,177.70 463,589.51 1.90 6,750.13 MWD+IFR2+MS+sag(4) 9,566.03 67.84 244.44 5,289.72 5,233.52 -2,934.48 -6,283.80 6,028,152.53 463,536.02 0.79 6,808.09 MWD+IFR2+MS+sag(4) 9,661.56 67.28 244.28 5,326.19 5,269.99 -2,972.68 -6,363.40 6,028,114.65 463,456.27 0.61 6,894.58 MWD+IFR2+MS+sag(4) 9,756.58 67.02 243.85 5,363.09 5,306.89 -3,010.98 -6,442.14 6,028,076.67 463,377.38 0.50 6,980.27 MWD+IFR2+MS+sag(4) 9,852.68 66.81 243.27 5,400.77 5,344.57 -3,050.34 -6,521.30 6,028,037.64 463,298.07 0.60 7,066.61 MWD+IFR2+MS+sag(4) 9,942.29 67.08 243.02 5,435.86 5,379.66 -3,087.59 -6,594.86 6,028,000.69 463,224.37 0.40 7,147.01 MWD+IFR2+MS+sag(4) 10,042.58 67.21 242.07 5,474.81 5,418.61 -3,130.20 -6,676.87 6,027,958.42 463,142.20 0.88 7,236.90 MWD+IFR2+MS+sag(4) 10,138.41 66.89 242.70 5,512.18 5,455.98 -3,171.10 -6,755.06 6,027,917.84 463,063.85 0.69 7,322.68 MWD+IFR2+MS+sag(4) 10,233.41 66.69 243.47 5,549.62 5,493.42 -3,210.62 -6,832.91 6,027,878.64 462,985.85 0.77 7,407.80 MWD+IFR2+MS+sag(4) 10,328.04 67.68 246.37 5,586.32 5,530.12 -3,247.58 -6,911.90 6,027,842.00 462,906.71 3.01 7,493.40 MWD+IFR2+MS+sag(4) 10,423.19 67.88 249.50 5,622.31 5,566.11 -3,280.67 -6,993.52 6,027,809.25 462,824.97 3.05 7,580.61 MWD+IFR2+MS+sag(4) 10,518.38 68.73 253.09 5,657.51 5,601.31 -3,309.02 -7,077.28 6,027,781.24 462,741.10 3.62 7,668.75 MWD+IFR2+MS+sag(4) 10,613.81 69.47 255.80 5,691.56 5,635.36 -3,332.92 -7,163.16 6,027,757.70 462,655.14 2.76 7,757.86 MWD+IFR2+MS+sag(4) 7!27/2010 2:55:12PM Page 5 COMPASS 2003.16 Build 42B Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development TVD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey Map Map Vertical MD Inc Azi TVD TVDSS +NI-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°1100') (ft) Survey Tool Name 10,708.95 69.75 258.66 5,724.71 5,668.51 -3,352.62 -7,250.12 6,027,738.34 462,568.10 2.83 7,847.00 MWD+IFR2+MS+sag(4) 10,762.07 70.33 260.54 5,742.85 5,686.65 -3,361.63 -7,299.23 6,027,729.53 462,518.97 3.50 7,896.83 MWD+IFR2+MS+sag(4) 10,805.45 70.02 262.71 5,757.56 5,701.36 -3,367.58 -7,339.60 6,027,723.75 462,478.58 4.76 7,937.43 MWD+IFR2+MS+sag(4) 10,856.22 69.74 264.72 5,775.03 5,718.83 -3,372.80 -7,386.98 6,027,718.73 462,431.18 3.76 7,984.67 MWD+IFR2+MS+sag(4) 10,899.97 70.00 267.12 5,790.08 5,733.88 -3,375.72 -7,427.95 6,027,715.97 462,390.20 5.18 8,025.12 MWD+IFR2+MS+sag(4) 10,948.40 70.21 269.36 5,806.57 5,750.37 -3,377.12 -7,473.47 6,027,714.76 462,344.69 4.37 8,069.61 MWD+IFR2+MS+sag(4) 10,995.58 70.84 271.78 5,822.30 5,766.10 -3,376.67 -7,517.94 6,027,715.38 462,300.22 5.02 8,112.65 MWD+IFR2+MS+sag(4) 11,047.52 71.17 274.24 5,839.21 5,783.01 -3,374.09 -7,566.98 6,027,718.16 462,251.19 4.52 8,159.60 MWD+IFR2+MS+sag(4) 11,090.64 71.32 276.05 5,853.07 5,796.87 -3,370.43 -7,607.64 6,027,721.99 462,210.55 3.99 8,198.16 MWD+IFR2+MS+sag(4) 11,185.07 72.15 279.66 5,882.68 5,826.48 -3,358.17 -7,696.46 6,027,734.61 462,121.80 3.74 8,281.34 MWD+IFR2+MS+sag(4) 11,280.50 73.47 281.77 5,910.88 5,854.68 -3,341.22 -7,786.02 6,027,751.92 462,032.31 2.52 8,364.12 MWD+IFR2+MS+sag(4) 11,375.95 74.24 285.64 5,937.43 5,881.23 -3,319.50 -7,875.08 6,027,774.01 461,943.35 3.98 8,445.24 MWD+IFR2+MS+sag(4) 11,470.11 74.80 289.46 5,962.57 5,906.37 -3,292.13 -7,961.58 6,027,801.71 461,856.97 3.95 8,522.51 MWD+IFR2+MS+sag(4) 11,565.65 75.82 293.05 5,986.81 5,930.61 -3,258.63 -8,047.69 6,027,835.56 461,771.01 3.79 8,597.92 MWD+IFR2+MS+sag(4) 11,660.17 77.28 295.94 6,008.80 5,952.60 -3,220.52 -8,131.33 6,027,874.01 461,687.53 3.35 8,669.81 MWD+IFR2+MS+sag(4) 11,755.53 78.30 297.81 6,028.97 5,972.77 -3,178.38 -8,214.46 6,027,916.48 461,604.58 2.19 8,740.23 MWD+IFR2+MS+sag(4) 11,850.87 78.98 300.61 6,047.75 5,991.55 -3,132.77 -8,296.03 6,027,962.42 461,523.20 2.97 8,808.29 MWD+IFR2+MS+sag(4) 11,946.39 79.99 304.59 6,065.19 6,008.99 -3,082.18 -8,375.13 6,028,013.32 461,444.31 4.23 8,872.75 MWD+IFR2+MS+sag(4) 12,041.33 79.74 306.83 6,081.90 6,025.70 -3,027.63 -8,451.01 6,028,068.17 461,368.66 2.34 8,933.13 MWD+IFR2+MS+sag(4) 12,138.17 80.56 307.63 6,098.46 6,042.26 -2,969.91 -8,526.98 6,028,126.20 461,292.94 1.17 8,992.81 MWD+IFR2+MS+sag(4) 12,232.32 80.55 308.23 6,113.91 6,057.71 -2,912.82 -8,600.24 6,028,183.58 461,219.92 0.63 9,050.02 MWD+IFR2+MS+sag(4) 12,326.90 80.68 309.04 6,129.34 6,073.14 -2,854.56 -8,673.13 6,028,242.13 461,147.28 0.86 9,106.60 MWD+IFR2+MS+sag(4) 12,422.42 80.24 309.00 6,145.17 6,088.97 -2,795.25 -8,746.31 6,028,301.73 461,074.34 0.46 9,163.20 MWD+IFR2+MS+sag(4) 12,516.62 80.11 308.90 6,161.24 6,105.04 -2,736.90 -8,818.50 6,028,360.36 461,002.40 0.17 9,219.07 MWD+IFR2+MS+sag(4) 12,611.94 80.00 309.32 6,177.70 6,121.50 -2,677.68 -8,891.35 6,028,419.88 460,929.80 0.45 9,275.37 MWD+IFR2+MS+sag(4) 12,637.91 80.30 309.76 6,182.15 6,125.95 -2,661.39 -8,911.08 6,028,436.25 460,910.13 2.03 9,290.56 MD+IFR2+MS+sag(4) 12,682.19 81.08 310.42 6,189.31 6,133.11 -2,633.25 -8,944.51 6,028,464.52 460,876.82 2.29 9,316.16 MWD+IFR2+MS+sag(5) 1 W 2,761.00 82.35 312.79 6,200.67 6,144.47 -2,581.47 -9,002.82 6,028,516.53 460,818.73 3.38 9,360.16 MWD+IFR2+MS+sag(5) 12,788.92 80.81 312.52 6,204.76 6,148.56 -2,562.76 -9,023.13 6,028,535.32 460,798.50 5.59 9,375.32 MWD+IFR2+MS+sag(6) 12,853.68 82.99 311.89 6,213.88 6,157.68 -2,519.69 -9,070.62 6,028,578.58 460,751.19 3.50 9,410.94 MWD+IFR2+MS+sag(6) 12,949.82 88.81 310.96 6,220.75 6,164.55 -2,456.27 -9,142.49 6,028,642.28 460,679.58 6.13 9,465.28 MWD+IFR2+MS+sag(6) P i 13,046.65 91.41 310.04 6,220.57 6,164.37 -2,393.39 -9,216.11 6,028,705.45 460,606.22 2.85 9,521.44 MWD+IFR2+MS+sag(6) 13,097.82 93.14 309.58 6,218.54 6,162.34 -2,360.66 -9,255.39 6,028,738.34 460,567.08 3.50 9,551.59 MWD+IFR2+MS+sag(6) 13,141.43 93.70 309.02 6,215.93 6,159.73 -2,333.08 -9,289.07 6,028,766.05 460,533.51 1.81 9,577.58 MWD+IFR2+MS+sag(6) 13,236.96 91.47 307.33 6,211.63 6,155.43 -2,274.11 -9,364.09 6,028,825.32 460,458.74 2.93 9,636.04 MWD+IFR2+MS+sag(6) 13,333.83 92.65 307.90 6,208.14 6,151.94 -2,215.02 -9,440.77 6,028,884.71 460,382.31 1.35 9,696.10 MWD+IFR2+MS+sag(6) 13,430.23 91.10 307.05 6,204.99 6,148.79 -2,156.40 -9,517.23 6,028,943.63 460,306.09 1.83 9,756.05 MWD+IFR2+MS+sag(6) 13,527.00 91.47 307.55 6,202.82 6,146.62 -2,097.78 -9,594.19 6,029,002.57 460,229.38 0.64 9,816.48 MWD+IFR2+MS+sag(6) 13,623.80 92.59 309.28 6,199.39 6,143.19 -2,037.67 -9,669.99 6,029,062.97 460,153.84 2.13 9,875.42 MWD+IFR2+MS+sag(6) 13,718.95 90.42 308.99 6,196.89 6,140.69 -1,977.64 -9,743.76 6,029,123.29 460,080.32 2.30 9,932.42 MWD+IFR2+MS+sag(6) 7/27!2010 2 55:12PM Page 6 COMPASS 2003.16 Build 42B Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development ND Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+ 13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska 'survey Map Map Vertical MD Inc Ail ND TVDSS +N/-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (ft) (ft) (ft) (ft) (°/100') (ft) Survey Tool Name 13,816.34 90.84 309.97 6,195.82 6,139.62 -1,915.73 -9,818.93 6,029,185.51 460,005.41 1.09 9,990.31 MWD+IFR2+MS+sag(6) 13,913.96 90.11 308.96 6,195.01 6,138.81 -1,853.68 -9,894.29 6,029,247.85 459,930.31 1.28 10,048.36 MWD+IFR2+MS+sag(6) 14,010.58 88.57 308.23 6,196.12 6,139.92 -1,793.42 -9,969.79 6,029,308.42 459,855.06 1.76 10,106.99 MWD+IFR2+MS+sag(6) 14,106.63 87.51 310.40 6,199.41 6,143.21 -1,732.60 -10,044.06 6,029,369.53 459,781.05 2.51 10,164.27 MWD+IFR2+MS+sag(6) 14,202.70 88.88 312.24 6,202.44 6,146.24 -1,669.20 -10,116.17 6,029,433.21 459,709.20 2.39 10,218.84 MWD+IFR2+MS+sag(6) 14,299.84 89.68 313.41 6,203.66 6,147.46 -1,603.18 -10,187.41 6,029,499.52 459,638.24 1.46 10,271.93 MWD+IFR2+MS+sag(6) 14,396.42 90.11 313.71 6,203.83 6,147.63 -1,536.62 -10,257.39 6,029,566.35 459,568.53 0.54 10,323.67 MWD+IFR2+MS+sag(6) 14,491.62 90.92 314.28 6,202.98 6,146.78 -1,470.50 -10,325.88 6,029,632.74 459,500.33 1.04 10,374.06 MWD+IFR2+MS+sag(6) 14,588.63 91.84 315.05 6,200.64 6,144.44 -1,402.33 -10,394.85 6,029,701.19 459,431.63 1.24 10,424.43 MWD+IFR2+MS+sag(6) 14,684.64 89.25 313.14 6,199.73 6,143.53 -1,335.53 -10,463.79 6,029,768.26 459,362.97 3.35 10,475.10 MWD+IFR2+MS+sag(6) 14,779.99 88.32 312.33 6,201.75 6,145.55 -1,270.84 -10,533.81 6,029,833.22 459,293.22 1.29 10,527.32 MWD+IFR2+MS+sag(6) 14,876.99 88.69 312.44 6,204.28 6,148.08 -1,205.48 -10,605.43 6,029,898.87 459,221.87 0.40 10,580.94 MWD+IFR2+MS+sag(6) 14,972.55 87.76 313.29 6,207.24 6,151.04 -1,140.50 -10,675.44 6,029,964.12 459,152.14 1.32 10,633.09 MWD+IFR2+MS+sag(6) 15,069.22 88.45 313.82 6,210.44 6,154.24 -1,073.93 -10,745.46 6,030,030.97 459,082.40 0.90 10,684.86 MWD+IFR2+MS+sag(6) 15,165.46 92.59 314.41 6,209.56 6,153.36 -1,006.95 -10,814.53 6,030,098.22 459,013.60 4.35 10,735.62 MWD+IFR2+MS+sag(6) 15,261.76 93.27 314.14 6,204.64 6,148.44 -939.82 -10,883.39 6,030,165.63 458,945.02 0.76 10,786.13 MWD+IFR2+MS+sag(6) 15,357.78 93.76 313.29 6,198.75 6,142.55 -873.58 -10,952.66 6,030,232.14 458,876.03 1.02 10,837.25 MWD+IFR2+MS+sag(6) 15,454.81 90.48 313.60 6,195.17 6,138.97 -806.92 -11,023.05 6,030,299.09 458,805.92 3.40 10,889.36 MWD+IFR2+MS+sag(6) 15,552.05 92.09 314.71 6,192.98 6,136.78 -739.20 -11,092.80 6,030,367.08 458,736.45 2.01 10,940.59 MWD+IFR2+MS+sag(6) 15,647.58 92.77 313.79 6,188.93 6,132.73 -672.60 -11,161.16 6,030,433.95 458,668.37 1.20 10,990.74 MWD+IFR2+MS+sag(6) 15,743.49 92.21 314.03 6,184.77 6,128.57 -606.15 -11,230.19 6,030,500.67 458,599.61 0.64 11,041.59 MWD+IFR2+MS+sag(6) 15,840.28 91.35 314.34 6,181.76 6,125.56 -538.72 -11,299.57 6,030,568.38 458,530.52 0.94 11,092.52 MWD+IFR2+MS+sag(6) 15,935.77 91.66 315.24 6,179.25 6,123.05 -471.47 -11,367.31 6,030,635.89 458,463.06 1.00 11,141.92 MWD+IFR2+MS+sag(6) 16,034.54 90.92 316.27 6,177.03 6,120.83 -400.73 -11,436.21 6,030,706.90 458,394.45 1.28 11,191.59 MWD+IFR2+MS+sag(6) 16,128.49 88.81 315.72 6,177.25 6,121.05 -333.16 -11,501.47 6,030,774.73 458,329.47 2.32 11,238.51 MWD+IFR2+MS+sag(6) 16,227.34 89.74 315.34 6,178.50 6,122.30 -262.63 -11,570.71 6,030,845.54 458,260.52 1.02 11,288.56 MWD+IFR2+MS+sag(6) 16,322.80 90.30 316.78 6,178.47 6,122.27 -193.89 -11,636.95 6,030,914.53 458,194.57 1.62 11,336.14 MWD+IFR2+MS+sag(6) 16,418.59 88.75 316.33 6,179.26 6,123.06 -124.35 -11,702.82 6,030,984.34 458,128.99 1.68 11,383.16 MWD+IFR2+MS+sag(6) 16,515.45 90.16 316.95 6,180.18 6,123.98 -53.93 -11,769.32 6,031,055.02 458,062.79 1.59 11,430.58 MWD+IFR2+MS+sag(6) 16,611.58 89.31 316.59 6,180.63 6,124.43 16.11 -11,835.16 6,031,125.31 457,997.24 0.96 11,477.46 MWD+IFR2+MS+sag(6) 16,708.10 88.88 312.30 6,182.15 6,125.95 83.67 -11,904.04 6,031,193.15 457,928.64 4.47 11,527.88 MWD+IFR2+MS+sag(6) 16,804.64 89.37 311.67 6,183.63 6,127.43 148.24 -11,975.79 6,031,258.00 457,857.16 0.83 11,581.82 MWD+IFR2+MS+sag(6) 16,830.27 89.93 315.99 6,183.78 6,127.58 165.98 -11,994.28 6,031,275.82 457,838.75 17.00 11,595.45 MWD+IFR2+MS+sag(6) 16,857.83 89.99 316.63 6,183.80 6,127.60 185.91 -12,013.31 6,031,295.82 457,819.79 2.33 11,609.08 MWD+IFR2+MS+sag(6) 16,901.51 90.11 319.03 6,183.77 6,127.57 218.28 -12,042.63 6,031,328.31 457,790.61 5.50 11,629.67 MWD+IFR2+MS+sag(6) 16,964.95 90.05 320.47 6,183.68 6,127.48 266.70 -12,083.62 6,031,376.89 457,749.82 2.27 11,657.68 MWD+IFR2+MS+sag(6) 16,996.79 89.43 321.24 6,183.82 6,127.62 291.40 -12,103.72 6,031,401.66 457,729.82 3.10 11,671.19 MWD+IFR2+MS+sag(6) 17,092.96 88.94 319.05 6,185.19 6,128.99 365.21 -12,165.34 6,031,475.72 457,668.51 2.33 11,713.05 MWD+IFR2+MS+sag(6) 17,190.32 90.42 316.53 6,185.73 6,129.53 437.31 -12,230.75 6,031,548.08 457,603.40 3.00 11,759.00 MWD+IFR2+MS+sag(6) , 17,288.02 91.97 314.64 6,183.70 6,127.50 507.08 -12,299.10 6,031,618.12 457,535.34 2.50 11,808.38 MWD+IFR2+MS+sag(6) 7/272010 2:55:12PM Page 7 COMPASS 2003.16 Build 42B Halliburton Company Definitive Survey Report Company: Well Planning-Pioneer-Oooguruk Local Co-ordinate Reference: Well ODSN-16-Slot ODS-16 Project: Oooguruk Development ND Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Site: Oooguruk Drill Site MD Reference: 42.7'+13.5'@ 56.20ft(Nabors 19AC) Well: ODSN-16 North Reference: True Wellbore: ODSN-16L1 Survey Calculation Method: Minimum Curvature Design: ODSN-16L1 PN13 Database: .Pioneer Alaska Survey Map Map Vertical MD Inc Azi ND TVDSS +NI-S +E/-W Northing Easting DLS Section (ft) (?) (?) (ft) (ft) (n) (ft) (ft) (ft) (°1100) (ft) Survey Tool Name 17,384.55 92.03 311.46 6,180.33 6,124.13 572.93 -12,369.59 6,031,684.24 457,465.13 3.29 11,860.78 MWD+IFR2+MS+sag(6) 17,480.19 91.10 311.43 6,177.71 6,121.51 636.21 -12,441.25 6,031,747.81 457,393.73 0.97 11,914.95 MWD+IFR2+MS+sag(6) 17,577.59 92.21 311.46 6,174.90 6,118.70 700.65 -12,514.23 6,031,812.54 457,321.02 1.14 11,970.11 MWD+IFR2+MS+sag(6) 17,672.72 91.16 310.14 6,172.10 6,115.90 762.78 -12,586.21 6,031,874.95 457,249.30 1.77 12,024.86 MWD+IFR2+MS+sag(6) 17,769.06 90.61 310.43 6,170.62 6,114.42 825.06 -12,659.69 6,031,937.53 457,176.08 0.65 12,081.03 MWD+IFR2+MS+sag(6) 17,865.60 89.68 310.04 6,170.37 6,114.17 887.42 -12,733.39 6,032,000.18 457,102.64 1.04 12,137.39 MWD+IFR2+MS+sag(6) 17,962.97 90.36 309.73 6,170.34 6,114.14 949.86 -12,808.11 6,032,062.91 457,028.19 0.77 12,194.72 MWD+IFR2+MS+sag(6) 18,057.82 90.48 306.61 6,169.64 6,113.44 1,008.47 -12,882.66 6,032,121.82 456,953.88 3.29 12,252.82 MWD+IFR2+MS+sag(6) 18,155.74 90.36 305.53 6,168.92 6,112.72 1,066.12 -12,961.81 6,032,179.78 456,874.97 1.11 12,315.61 MWD+IFR2+MS+sag(6) 18,252.27 93.52 307.71 6,165.66 6,109.46 1,123.65 -13,039.23 6,032,237.62 456,797.80 3.98 12,376.75 MWD+IFR2+MS+sag(6) 18,348.05 90.11 308.74 6,162.62 6,106.42 1,182.88 -13,114.42 6,032,297.15 456,722.85 3.72 12,435.33 MWD+IFR2+MS+sag(6) 18,444.35 88.82 310.58 6,163.52 6,107.32 1,244.33 -13,188.55 6,032,358.90 456,648.98 2.33 12,492.33 MWD+IFR2+MS+sag(6) 18,534.46 89.25 312.84 6,165.04 6,108.84 1,304.27 -13,255.80 6,032,419.11 456,581.98 2.55 12,543.02 MWD+IFR2+MS+sag(6) 18,635.29 88.01 316.58 6,167.45 6,111.25 1,375.18 -13,327.43 6,032,490.29 456,510.65 3.91 12,595.30 MWD+IFR2+MS+sag(6) 18,733.88 89.87 319.25 6,169.28 6,113.08 1,448.32 -13,393.48 6,032,563.70 456,444.90 3.30 12,641.63 MWD+IFR2+MS+sag(6) 18,830.69 90.05 320.88 6,169.34 6,113.14 1,522.55 -13,455.63 6,032,638.17 456,383.06 1.69 12,683.90 MWD+IFR2+MS+sag(6) 18,924.34 88.75 316.99 6,170.32 6,114.12 1,593.14 -13,517.13 6,032,709.00 456,321.85 4.38 12,726.44 MWD+IFR2+MS+sag(6) 19,023.94 89.80 314.55 6,171.58 6,115.38 1,664.50 -13,586.59 6,032,780.63 456,252.69 2.67 12,776.51 MWD+IFR2+MS+sag(6) 19,119.03 88.94 314.71 6,172.63 6,116.43 1,731.30 -13,654.26 6,032,847.70 456,185.30 0.92 12,825.94 MWD+IFR2+MS+sag(6) 19,213.45 88.44 314.75 6,174.79 6,118.59 1,797.73 -13,721.32 6,032,914.39 456,118.51 0.53 12,874.87 MWD+IFR2+MS+sag(6) 19,247.26 90.11 315.94 6,175.22 6,119.02 1,821.78 -13,745.08 6,032,938.54 456,094.85 6.06 12,892.09 MWD+IFR2+MS+sag(6) 19,279.84 91.60 318.03 6,174.73 6,118.53 1,845.59 -13,767.30 6,032,962.44 456,072.73 7.88 12,907.87 MWD+IFR2+MS+sag(6) 19,312.21 89.68 317.22 6,174.37 6,118.17 1,869.50 -13,789.12 6,032,986.44 456,051.02 6.44 12,923.22 MWD+IFR2+MS+sag(6) 19,408.84 90.73 317.07 6,174.02 6,117.82 1,940.34 -13,854.84 6,033,057.53 455,985.59 1.10 12,969.79 MWD+IFR2+MS+sag(6) 19,439.81 90.36 314.65 6,173.73 6,117.53 1,962.56 -13,876.40 6,033,079.84 455,964.12 7.90 12,985.32 MWD+IFR2+MS+sag(6) 19,472.21 90.61 310.48 6,173.45 6,117.25 1,984.47 -13,900.26 6,033,101.84 455,940.35 12.89 13,003.15 MWD+IFR2+MS+sag(6) 19,505.61 91.60 308.33 6,172.81 6,116.61 2,005.67 -13,926.06 6,033,123.14 455,914.64 7.09 13,023.03 MWD+IFR2+MS+sag(6) 19,534.67 92.09 308.51 6,171.87 6,115.67 2,023.72 -13,948.82 6,033,141.28 455,891.96 1.80 13,040.73 MWD+IFR2+MS+sag(6) 19,598.34 91.29 309.00 6,170.00 6,113.80 2,063.56 -13,998.45 6,033,181.32 455,842.50 1.47 13,079.20 MWD+IFR2+MS+sag(6) 19,698.21 89.80 309.90 6,169.05 6,112.85 2,127.01 -14,075.56 6,033,245.08 455,765.65 1.74 13,138.61 MWD+IFR2+MS+sag(6) 19,795.14 90.92 312.61 6,168.44 6,112.24 2,190.92 -14,148.42 6,033,309.27 455,693.06 3.03 13,193.79 MWD+IFR2+MS+sag(6) 19,891.76 92.03 315.42 6,165.95 6,109.75 2,258.02 -14,217.87 6,033,376.66 455,623.88 3.13 13,244.88 MWD+IFR2+MS+sag(6) 19,987.59 92.71 315.55 6,161.99 6,105.79 2,326.30 -14,285.00 6,033,445.19 455,557.04 0.72 13,293.43 MWD+IFR2+MS+sag(6) 20,080.94 91.16 315.07 6,158.84 6,102.64 2,392.62 -14,350.61 6,033,511.78 455,491.71 1.74 13,340.98 MWD+IFR2+MS+sag(6) 20,178.91 92.71 316.09 6,155.53 6,099.33 2,462.55 -14,419.14 6,033,581.98 455,423.47 1.89 13,390.49 MWD+IFR2+MS+sag(6) 20,276.19 95.13 315.63 6,148.88 6,092.68 2,532.20 -14,486.72 6,033,651.89 455,356.18 2.53 13,439.16 MWD+IFR2+MS+sag(6) 20,373.82 95.74 315.48 6,139.63 6,083.43 2,601.58 -14,554.78 6,033,721.54 455,288.41 0.64 13,488.34 MWD+IFR2+MS+sag(6) 20,468.57 94.50 315.79 6,131.17 6,074.97 2,669.05 -14,620.76 6,033,789.27 455,222.70 1.35 13,535.98 MWD+IFR2+MS+sag(6) 20,513.00 94.50 315.79 6,127.69 6,071.49 2,700.80 -14,651.65 6,033,821.14 455,191.95 0.00 13,558.24 PROJECTED to TD 7/272010 2:55:12PM Page 8 COMPASS 2003.16 Build 42B ����|�����r��� ��U���U�~� �U � -- ~~~~co ^~ ~-~-~~^ ~ ^ ~~~ ^ Days vs. Depth 9000 | | | | | | | | '__ _'_- . . . . . / / / / m0 onon 10000 '----'__'__---__._._ ----__.—'----.__ - | � °` fH � - � _ - ..�,~ � �1nuno �_ _ _-- --._--' __ -_ m � �� n�w �=minima m 1 _. ' . 11mm -- � | L — — — --'' , IL � ����� | � |� | | | I limmoino � Drillnmm ------'—'--'—'—''-�-- ~�' ------------' ------- -' '--- an Production Hole 1e-Jmv-2010 I�znnn --------------------------------'' --------'- - - - - - '- -' '--+* i / li=m^, �anon --'-----------'--'-----'----' - - - --'' �onno -'-'-` --------------------------'---- '— — — — --'' +t��+ Ix luw' _ ._ _ _ _ .......... -- ± _ �� �nnnn ---'---'—'------'—'------'-'----'--'' - - - - --- M '' '— — '— --'' VC1 ___ — ' _ �� �onon --------------------'----'---------'' *� musi�-- 1111111 . _ —_. ilk � � � ���17500 -_-_-_--_._._.-_--_----___.._ - - - . ill it ill ' - - - _.� - '- '- -' '-_ ' 1»�» �U ---'---' - - - - --' MIMI TD 6 1ur Hole Section Run 4 1/2'Liner » � z�n - �- — — — — 2051oon MD,mur 68'TVD �� � ". _—�� � 20500 ----------------- --'' .�� ' ' — ` -' ` _ 'm_ � MIIIII MEM 11.11 1111111 21000 ~o~ —�� �� �~~~��� ' � ' ' "==ii o 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Rig Days Et d !_;R ,h 0__17-I ir-'?fI I Sperry Drilling ODSN-16L1 API 50-703-20620-60 Digital Data EMF & PDF Logs ADI End of Well Report Halliburton Log Viewer EMF Viewer iPIONEERI ES 1
