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Home My WebLink About216-081 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMIOIN REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon 0 Plug Perforations ❑ Fracture Stimulate 0 Pull Tubing 0 Operations shutdown 0 Suspend 0 Perforate 0 Other Stimulate 0 Alter Casing 0 Change Approved Program ❑ Plug for Redrill 0 Perforate New Pool 0 Repair Well 0 Re-enter Susp Well 0 Other: 0 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 216-081 3. Address: P.O.Box 196612 Anchorage, Development 0 Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-21950-03-00 7. Property Designation(Lease Number): ADL 0028262 8. Well Name and Number: PRUDHOE BAY UNIT Z-23C 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: Total Depth: measured 11927 feet Plugs measured feet E■/�;E I V E D true vertical 8984 feet Junk measured feet RECEIVED Effective Depth: measured 11538 feet Packer measured 8711 feet MAY 01 2017 true vertical 8955 feet Packer true vertical 8535.11 feet AOGCC Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20"91.5#A-53 30-110 30-110 1533 515 Surface 2618 13-3/8"68#L-80 28-2646 28-2646 5020 2260 Intermediate 6692 9-5/8"47#L-80 26-6718 26-6699 6870 4760 Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth: Measured depth: 10196-10260 feet 10352-10384 feet 10384-10448 feet 10490-10935 feet 10975-11300 feet 11464-11494 feet True vertical depth: 8991-8992 feet feet 8991-8990 feet 8990-8987 feet 8985-8972 feet 8971-8953 feet 8952-8953 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13Cr80 24-8767 24-8585 Packers and SSSV(type,measured and See Attachment See Attachment See Attachment true vertical depth) 12.Stimulation or cement squeeze summary: Intervals treated(measured): SCANNED MA ' i 5 2017. Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 248 559 24 721 261 Subsequent to operation: 412 651 326 909 263 14.Attachments:(required per 20 AAC 25.070.25.071,&25.283) 15.Well Class after work: Daily Report of Well Operations 0 Exploratory ❑ Development 0 Service 0 .Stratigraphic 0 Copies of Logs and Surveys Run 0 16.Well Status after work: Oil 0 Gas 0 WDSPL ❑ Printed and Electronic Fracture Stimulation Data 0 GSTOR 0 WINJ 0 WAG 0 GINJ 0 SUSP El SPLUG ❑ 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: N/A Authorized Name: Peru,Cale Contact Name: Peru,Cale Authorized Title: Petroleum Eng' er `� Contact Email: Cale.Peru@bp.com Authorized Signature: Date: 5////7 Contact Phone: +1 9075644522 Form 10-404 Revised 04/2017 VTL. 51/40/17_J`7- 1007 RBDMS u MAY - 3 2017 i//`�` Submit Original Only • • fia Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, AK 99501-3572 RE: BP Exploration (Alaska), Inc. Report of Sundry Well Operations Summary April 28, 2017 To Whom it May Concern: Attached please find the Report of Sundry Well Operations for Z-23C, PTD # 216-081 for Add Perforations. Sincerely, BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Attachment: Form 10-404 BP Exploration (Alaska) , Inc. P.O. Box 196612 Anchorage, AK 99519-6612 • 0 Lo 0 0 0 r O O ROCOCO t N c O O r- U y M 0 0 c 0 0 i co N I-- d O co M m r co CO I- _ CO CO CO O L) N- r CO tf) 'ct O O 0) c- CO CO CO CO CO I-- (O O) C) 6) Lo N CO CO CO CO CO CO CO H N co r- io .- c) CO CO to CO CA CO d CO N N to to 10 CO O) N CO CO CO CO CO cU GI (Y) O CO CO CO 0) O N- N- E C) CO1 m(O I- C) CO N CA to N- . N Nco cocoa) o) � co ctim 1 1 1 1 1 1 1 1 Z aLoNN- Cr) N- O CO CO (O C) 'Cr C) v CO N N CO CO CO CO 0) N C M< .Q M 1O Lo co LU ` co QM O CO c (b CO C) Q JI 10 OJLcoMJMM � Cl) �/ Na) to CO d. *k M N co co ap coN cr) o) -c` zoC OO_ O Ch to f� N CO N N M O i Imo. M M N � t ar co CNI 00 CO CO CO coCA OCO CO co O M O M N- O N CO N N - ,- CO W ' U W W cis Z W W W W W W pp O D H Z Z Z Z Z D O (/) Z J J J J J F- • • Packers and SSV's Attachment PRUDHOE BAY UNIT Z-23C SW Name Type MD TVD Depscription Z-23C PACKER 6571.6 6558.83 7" Baker LT Packer Z-23C PACKER 8685 8512.27 3-1/2" Baker 45 KB Packer Z-23C TBG PACKER 8710.63 8535.11 4-1/2" Baker S-3 Hydro Set Packer Z-23C PACKER 8758.32 8576.98 4-1/2" Baker KB LT Packer • • v o no rna) _o o m „_ 0 -0 O N p D N = N N a) 0-) 0 oU O L 0)O 0 CO �- a CS U 0 N 0 Q N off N 0_ O N O L L L 6 0)M x "00 a) o- a a) °6 cn nw = m o aim o = Q MU (a 2 D ca'' O O Q) co c -0 -o c 12 I- a) � - 4t -0 E a) a) CC j CO a ,_ o_ C ,m _ M fn ls- 06 co v' .fn O O -A- O U O a) Y o_}, X O D 't I' O U - _c M a) N O 0 U ' O a) 7-.„ U) i.-4.5. d _� co a L \ co O a) O Q E O N ¢ U s = O O D U _ U) x o 0 co a) z. O V > J O Q- NE O c' E N o I- _ccB • McC % off �O U) :LI a m . ' co E ca N < N rnQ I D . > O 3 _ . a a) E m L m Q Q -, ,- c 0) Q_ `t • C �' N f- Q- U) F' O - O u a) c 4- a) "O 0 ` O • V 0 'O Z CO J 2 'p) O d 2 c 0 'O - CO a) _5 Q O) 0 U N w 0 U a) i w O O LL `�CD fi) O "0 J .t N M -0 V' > Co 0 d 0- • Q Q= coo 0 O X _c (Y) 0 ONO' N 0 O W -0 N o = CL Q O N O� Qm 2 O 't co < N r --§ i Q p d -TO - L 0_0_ O O >CO I I � O > _ . Q c6 o � Nel � Q E c L Q. = O m N ~ � a) co di O Q N O a.d 0 c Q 0 .c x 00 • o c C = O > O O't D a) * O t w •O CV � ~ O — a) >, (t E o o 2 E0cLo in y -5; O cn ▪ CL = Q2 � • = CV v 'ot0 oO tIN c 00 aL) a) o UmUo2 5 ) a) OQai - -(S ,t -' c . CO CO- rn- a) . - - a o- * O a Q 06 aj , o o N N- -in � O -0 0- cn N 0 O N to - CV .c L 0..Co Cr)t 13 o - a) O J • 0).- 0) N (I) r- = co U) Lo:7: co O CL. o_C)) CC rn Lo a) r, m Q co U i O = 0)O 2_.) i E 0 O ZD X 2 X d V O my g - .0) 0E t 0 L v J p. N Q , Q- N O <V � 5 ,- — 2 O 0) N Y k L �*k C c0 Q� � VL O N a) QL_ � L � � .� 3 a) 3 3 co C/) > *k c D 1- 2 cD .e o � � c0 co $ o cD .<0 O ..4- 1- 1031— � LO :47 UUL .ELE « 0 ( v O— c N * UILL * co � W F- r-O r- N- r- N N C O O 5I- ( N . d' In _ N OM M CO N I- co M M 4 0 Q rRik- 4-1/16'CM/ 0 . AELIHEA D= FPC SAAOTES: WELL ANGLE>70°@ 9236% ' ACTUATOR= BKR MD€EL C Z-23C -*CHROME TBG&LNR***MAX OLS:43.5°@ 9607'. OKS.ELEV= 9t7' REF ELB/= 81.06' SF ELEV= 55 36' [ 2206' _I-1_4-1/2"HES X NP,0=3.813' KOP= 3100I I GAS LFT luVOCRELS IIx Angle= 95°0 11056' I Datum MD= 9177' Z1• 111111L, ST MD TVD DEN TY PE V LV LATCH FORT' CM th Ct=-ND= 880 6 3095 3095 1 DONE RK 16 1 21 11/16,a0 SS WIG 5 4995 4994 1 MMG DOW IRK 16 12/11/161 13-318'CSG,68#,L-80,ID=12.415" H 2667' 4 6386 6379 13 TIG DOME RK 16 12/11/16' 3 7451 7373 21 KBG2 DMI' BK 0 03/20116i 2 8222 8083 22 KBG2 COME BK 16 12/11/161 i 1 8580 8417 23 KBG2 SO BK 22 12/11:16, i Minimum ID =2.31" @ 8696' 6565' —9-5/8-X r BKR ZXP L1P 2-718" X NIP IN LTP w!PTSA w/TEBK SLV,ID=6,28" 6679' H9-5/8"X r BKR HMC HGR w/R NIP,ID=6 18" _.a MLLOUT WINDOW(Z-2313) 6718 -6734' 1/vECHANICAL VM4rsTocK(08/25/04) i 6218' 1 8686 —45 KB LTP w/PTSA(11/05/162J 9-5/8"CSG,47#.L-80,ID=8.681' H —6718' i ' 8690' J—4-1/2"HES X NP,D=3.813' I I 8692' —13.70"DEPLOY SLV,ID=3.007_I TOLJTOC —1 —8692' ] :' I 8686' —12-7/8-X NP,ID=2.31" : 8710' H7"X 4-1/2"BKR S-3 PKR,ID=3870"BEHIND CT 1 8713' i---I3-1/2"OTIS X NIP,ID=2.812_1 8734' 4-1/2"HES X NP,ID=3.813' q 8747' —7'X 5"BKR ZXP LNR TOP PKR r' w fT1E8K SLV,0=4 360" I LI;'....-----------1 8766' —1_4-1/2-HES XN NIP MLLED TO 3.80"(08/19116) j 4-1/2"TBG,12.6#,13CR VAM, —1 8767' 1 8766' 0152 bpf,D 3 958' Hr X 5"BKR HMC HGR w/R NP.ID=4.25" = T * 0.• 8267' _44-1/2"VVLEG.ID=3.958" BEHIND 1 3-1/2"LNR,9 3#,13CR-85 Sit, —1 8899' h 8176' —15'x 4-1/2"X0,D=3,99" CT LNR • .0087 bpf,ID=2.992" . -• Jr LNR 26#,L-80 BTC-M, H 8913' _A ,'-, .4 % k , FT-L1819' 3-1/2"X 3-3/16'XO,ID=2,786" 9164' —14-1/2'MARKER JT w/RA TAG 1 1 0383 bpf,ID=6.276' It 14-1/2"BKR MONOBORE WHPSTOCK(10119/16) — 9280' ...$;. MLLOUT WINDOW(Z-23C) 9280'-9287' * 14-1/2"LNR, 12.6#,L-80 BTC-M, —1 —9280' — _ , : 3677' ---IPUPJT w/RA TAG I I 0152 bpf,10=3.958' * ... I *- ' 3-1/4'LNR,6.60,13CR-85 TCI, 0079 bpf,ID=2.85" 1-1 9947' 4 * __ _____ __________.____.____ : 4' se4 ' H 3-3/16"X 2-7/8'X0,ID=2.377" . PERFORATION SUMMARY --.. 7'' REF LOG:MM)-GR LOG ON 10/27/16 • ANGLE AT TOP FERF- 89° 0 10196' • II P4te Refer to Production DB for historical pert data SIZE SPF 1 INTERVAL OprliSqz DATE 2" 6 10196 -10260 0 03/31/17 /...: 1 ' 2° 6 10352-10448 0 03/31/17 2" 6 10495- 10940 0 10/29/16 .p., . 2" 6 10980- 11305 0 10/29/16 2' 6 11464- 11494 0 03/30/17 . It.' 11538- —PB1D •' . io o 1 12-718'LNR,6.5s,13CR-85 11-1511. 0058 bpf.D=2.441' H 11663' i DA it 1 REV BY ODOM:NTS DATE REV BY DC/WANTS PRUDHOE BAY LNT 10118/891 FI-I ORIGINAL COMPLETION 11/15/16 JI1J..0.43 ADDED REF EP./ VVELL Z-23C 05/05/951 UNDER SIDETRACK(Z-23A) 11/17116 JTG1,11143 SET LTP w/PTSA(11/05/16) PEWIT No .2160810 07/08/03 DAV/KK SDTRCK ATTEMPT(Z-234L1 12/29/16 CJINYJM) GLV 00(12/11/16) AF1ND 50-029-21950-03 09119/041 016 SIDETRACK(Z-23B) 04/03/17 CLW/11413 A OFERFS(03/30-31/17) SEC 19,711N, R12E,4560'r•ISL&3214'WEL 10/30/16 NOREIC2 CTD(Z-23C) .. 11/02/16 JUJMD 'FINAL ODE AFFROVAL _ BP Exploration(Alaska) DATA SUBMITTAL COMPLIANCE REPORT 2/21/2017 Permit to Drill 2160810 Well Name/No. PRUDHOE BAY UNIT Z -23C MD 11927 TVD 8984 Completion Date 10/30/2016 REQUIRED INFORMATION Mud Log No 11- DATA INFORMATION Types Electric or Other Logs Run: MWD/GR/RES Well Log Information: Log/ Electr Data Digital Dataset Type Med/Frmt Number Name ED C 27751 Digital Data ED C ED C ED C ED C ED C ED C ED C ED C ED C ED C ED C ED C AOGCC' 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data 27751 Digital Data Operator BP EXPLORATION (ALASKA) INC. API No. 50-029-21950-03-00 Completion Status 1-011- Samples -OIL Samples Nov,, Current Status 1-0I1- UIC No Directional Survey Yes (data taken from Logs Portion of Master Well Data Maint) Log Log Run Interval OH/ Scale Media No Start Stop CH Received Comments 8882 11927 11/14/2016 Electronic Data Set, Filename: Z- 23C_LW D_FINAL _FI ELD_COMPOSITE_27OCT 2016 BHI CTK.las 11/14/2016 Electronic File: 10043536 7-21-16.pdf ' 11/14/2016 c Electronic File: 13008719 7-20-16.pdf 11/14/2016 Electronic File: USR 10043536 Post Run 03.pdf , 11/14/2016 Electronic File: USR 10043536 Post Run 08.pdf - 11/14/2016 Electronic File: USR 13008719 Pre Run xx.pdf 11/14/2016 Electronic File: Z- 23C_Postrun_04_USR_13008719.pdf - 11/14/2016 Electronic File: Z- 23C_Postrun_06_USR_10043536.pdf ' 11/14/2016 Electronic File: Z- 23C_GR_Res _ 270CT2016_MD_FINAL_FIELD_ . BHI_CTK.cgm 11/14/2016 Electronic File: Z- 23C_GR_Res _270CT2016_TVDSS_F I NAL_FI E LD_BHI_CTK.cgm 11/14/2016 Electronic File: Z - p 23C_GR_Res_270CT2016_MD_FINAL_FIELD_ r BHI_CTK.pdf 11/14/2016 Electronic File: Z- le 23C_GR_Res _270CT2016_TVDSS_FINAL_FIE LD_BHI_CTK.pdf 11/14/2016 Electronic File: Z -23C Final Survey.pdf Pagc I of 3 Tuesday, February 21, 2017 DATA SUBMITTAL COMPLIANCE REPORT 2/21/2017 Permit to Drill 2160810 Well Name/No. PRUDHOE BAY UNIT Z -23C Operator BP EXPLORATION (ALASKA) INC. API No. 50-029-21950-03-00 MD 11927 TVD 8984 ED C 27751 Digital Data ED C 27751 Digital Data ED C 27751 Digital Data ED C 27751 Digital Data ED C 27751 Digital Data ED C 27751 Digital Data ED C 27751 Digital Data ED C 27751 Digital Data Completion Date 10/30/2016 Completion Status 1 -OIL Log C 27751 Log Header Scans Well Cores/Samples Information: Name INFORMATION RECEIVED Completion Report Y Production Test Informatio Y NA Geologic Markers/Tops O COMPLIANCE HISTORY Completion Date: 10/30/2016 Release Date: 7/7/2016 Description Interval Start Stop Directional / Inclination Data l./ Mechanical Integrity Test Information Y AG Daily Operations Summary Date Comments 0 0 Current Status 1 -OIL UIC No 11/14/2016 Electronic File: Z -23C Final Survey.txt 11/14/2016 Electronic File: Z -23C Final Surveys.csv 11/14/2016 Electronic File: Z -23C Final Surveys.xlsx 11/14/2016 Electronic File: Z-23C_25_tapescan_BHI_CTK.txt 11/14/2016 Electronic File: Z-23C_5_tapescan_BHI_CTK.txt 11/14/2016 Electronic File: Z-23C_output.tap 11/14/2016 Electronic File: Z- 23C_GR _Res 270CT2016 MD_FINAL_FIELD_• BHI CTK.tif 11/14/2016 Electronic File: Z - 23C_ GR—Res — Res_ 270CT2016_TVDSS_FINAL_FI E LD BHI CTK.tif 2160810 PRUDHOE BAY UNIT Z -23C LOG HEADERS Sample Set Sent Received Number Comments Mud Logs, Image Files, Digital Data Y 49 Composite Logs, Image, Data FilesYO Cuttings Samples Y 7b Core Chips Y Core Photographs Y Laboratory Analyses Y AOGCC Page 2 of 3 Tuesday, February 21, 2017 DATA SUBMITTAL COMPLIANCE REPORT 2/21/2017 Permit to Drill 2160810 Well Name/No. PRUDHOE BAY UNIT Z -23C Operator BP EXPLORATION (ALASKA) INC. MD 11927 TVD 8984 Completion Date 10/30/2016 Completion Status 1-0I1- Current Status 1-011- Comments: -OILComments: Compliance Reviewed By: Date: API No. 50-029-21950-03-00 UIC No AOGCC Page 3 of 3 Tuesday, February 21, 2017 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMIS" `N WELL JMPLETION OR RECOMPLETION REPG AND LOG 1a. Well Status: Oil RI " Gas ❑ SPLUG ❑ Other ❑ Abandoned ❑ Suspended ❑ 1b. Well Class: 20AAC 25.105 20AAC 25.110 GINJ 11WINJ ❑ WAG ❑ WDSPL ❑ No. of Completions: One Development R1 Exploratory El Service ❑ Stratigraphic Test ❑ 2• Operator Name: 6. Date Comp., Susp., or Aband.: 14. Permit to Drill Number/Sundry BP Exploration (Alaska), Inc 10/30/2016 216-081' 3. Address: 7. Date Spudded: 15. API Number: P.O. Box 196612 Anchorage, AK 99519-6612 10/20/2016 50-029-21950-03-00 4a. Location of Well (Governmental Section): B. Date TD Reached: 0- 16. Well Name and Number: 4e2 948 10/2 -7h -a' PBU Z -23C ° 9 Ref Elevations KB 81.06 17. Field/Pool(s): Surface: 720' FNL, 1739' FWL, Sec. 19, T11N, R12E, UM Top of Productive Interval: 458' FSL, 1545' FWL, Sec. 18, TI 1N, R12E, UM GL 56.02 • BF 55.36 PRUDHOE BAY, PRUDHOE OIL 10. Plug Back Depth(MD/TVD): 18. Property Designation: Total Depth: 540' FNL, 2770' FWL, Sec. 19, T11N, R12E, UM 11538'/ 8955' ADL 028262 - 4b. 4b. Location of Well (State Base Plane Coordinates, NAD 27): 11. Total Depth (MD/TVD): 19. Land Use Permit: Surface: x- 599459 ° y- 5959360 Zone - ASP 4 11927'/8984' • 85-009 TPI: x- 599250 y- 5960535 Zone - ASP 4 12. SSSV Depth (MD/TVD): 2()Thickness of Permafrost MD/TVD: Total Depth: x- 600488 y- 5959554 Zone - ASP 4 None 1900' (Approx.) 5. Directional or Inclination Survey: Yes 0 (attached) No ❑ 13. Water Depth, if Offshore: 21, Re-drill/Lateral Top Window MD/TVD: Submit electronic and printed information per 20 AAC 25.050 N/A (ft MSL) 9280'/ 8917' 22. Logs Obtained List all logs run and, pursuant to AS 31.05.030 and 20 AAC 25.071, submit all electronic data and printed logs within 90 days of completion, suspension, or abandonment, whichever occurs first. Types of logs to be listed include, but are not limited to: mud log, spontaneous potential, gamma ray, caliper, resistivity, porosity, magnetic resonance, dipmeter, formation tester, temperature, cement evaluation, casing collar locator, jewelry, and perforation record. Acronyms may be used. Attach a separate page if necessary MWD / GR / RES 23. CASING, LINER AND CEMENTING RECORD CASING WT. PER FT. GRADE SETTING DEPTH MD SETTING DEPTH TVD HOLE SIZE CEMENTING RECORD AMOUNT PULLED TOP BOTTOM TOP BOTTOM 20" 28' 108' 28' 108' 13-3/8" 68# L-80 27' 2647' 27' 2646' 17-1/2" 3684 cu ft Permafrost 9-5/8" 47# 1 L-80 25' 6718' 1 25' 6699' 12-1/4" 1894 cu ft Class'G' 7" 26# L-80 6565' 8913' 6552' 8707' 8-1/2" 488 cu ft Class'G' 4-1/2" 12.6# L-80 8747' 9280' 6552' 8707' 6-1/8" 281 cu ft Class 'G' 3-1/2"x3-1/4" x2-7/8" 9.3#/6.6# /6.5# 13CrB5 8685' 11553' 8512' 8956' 4-1/4" 96 sx Class'G' 24. Open to production or injection? Yes R1 No ❑ 25. TUBING RECORD If Yes, list each interval open (MD/TVD of Top and Bottom; Perforation Size and Number): GRADE DEPTH SET (MD) PACKER SET (MD/TV 4-1/2", 12.6#, L-80 8767' 8710'/ 8535' 2" Gun Diameter, 6 spf 10495'- 10940' 8985'- 8972' " 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. 10980'- 11305' 8970'-8952 ' Was hydraulic fracturing used during completion? Yes ❑ No D Per 20 AAC 25.283 (i)(2) attach electronic and printed information COMPLETION NOV2 2016 DATE DEPTH INTERVAL (MD) AMOUNT AND KIND OF MATERIAL USED Ib/54 Z�tP 2500' Freeze Protect w/ 38 Bbls Diesel VERIFIED A GC 27. PRODUCTION TEST Date First Production: November 22, 2016 Method of Operation (Flowing, gas lift, etc.): Gas Lift Date of Test: 11/24/16 Hours Tested: 8 Production for Test Period -► Oil -Bbl: 320 Gas -MCF: 358 Water -Bbl: 57 Choke Size: 128 Gas -Oil Ratio: 1121 Flow Press Tubing 280 Casinq Press: 1700 Calculated 24 Hour Rate -♦ Oil -Bbl: 959 Gas -MCF: 1075 Water -Bbl: 172 Oil Gravitv - API (corr): 25.7 Form 10-407 Revised 11/2015 CONTINUED ON PAGE 2 Submit ORIGINAL only ►ATL zlr� l`�- Cb�� RBDMS Z- - DrEC - b 2016 C-6, , t .i 7 28. CORE DATA Conventional Core(s) Yes ❑ No a Sidewall Cores Yes ❑ No Q 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. 29. GEOLOGIC MARKERS (List all formations and markers encountered): 30. FORMATION TESTS NAME MD TVD Permafrost - Top Well Tested? Yes ❑ No 0 Permafrost - Base If yes, list intervals and formations tested, briefly summarizing test results. Attach Top of Productive Interval 9168' 8877' separate sheets to this form, if needed, and submit detailed test information per 20 AAC 25.071. Sadlerochit - Zone 4B 9168' 8877' Kicked off from Parent Well 9280' 8917' (Z -23B) Formation at total depth: Zone 4B 9168' 8877' 31. List of Attachments: Summary of Daily Drilling Reports, Summary of Post -Rig Work, Survey, Cement Report, Wellbore Schematic Diagram Information to be attached includes, but is not limited to: summary of daily operations, wellbore schematic, directional or inclination survey, core analysis, paleontological report, production or well test results, per 20 AAC 25.070. 32. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Contact: Leemhuis, Jacob Email: Jacob.Leemhuis@bp.com Printed Name: Joe Lastu a Title: Drilling Technologist Signature: /A Phone: +1 907 564 4091 Date: 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. All laboratory analytical reports regarding samples or tests from a well must be submitted to the AOGCC, no matter when the analyses are conducted. Item 1 a. 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 1 b. Well Class Service wells: Gas Injection, Water Injection, Water -Alternating -Gas Injection, Salt Water Disp, Water Supply for Injection, Observation or Other. Item 4b. TPI (Top of Producing Interval). Item 9. 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 15. 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 29. Item 22. Review the reporting requirements of 20 AAC 25.071 and, pursuant to AS 31.05.030, submit all electronic data and printed logs within 90 days of completion, suspension, or abandonment, whichever occurs first. Item 23. Attached supplemental records 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. Item 31. Pursuant to 20 AAC 25.070, attach to this form: well schematic diagram, summary of daily well operations, directional or inclination survey, and other tests as required including, but not limited to: core analysis, paleontological report, production or well test results. Form 10-407 Revised 11/2015 Submit ORIGINAL Only TREE= 4-1/16" CIW VVELLFEAD= FMC ACTUATOR = BKR MODE C 'OKB. ELEV = 91.7* 'REF ELEV = 81.06" BF. ELEV = 5536"i -KOP= 3 1 100' Max Angle = 95- @ 11056' Datum Mu 9177' Datum TVD = 8800' SS 13-318' CSG, 68#, L-80, ID = 12415- ]--A 2657- IMinimum ID = 2.31" 0 86961 2-7/8" X NIP IN STP w1PTSA j9 -5/8 - CSG, 47#,L -80,K)=8-681- I 4-1/2- TBG, 12,6#, 13CRVAM, 8767' .0152 bpf, 1) = 1958* 3-1/2-LNR, 9.3#,13CR-86STL, 8 .0087 bpf, ID = 2-992" DEV 7- LNR, 26#, L-80 BTC -M, VLV .0383 bpf, ID = 6276' PORT DATE 1/2- BKR MONOBORE WHIPSTOCK (10/19/16) _]—E__928OL 4-1/2- LNR 12.6#, L-80 BTC -M, 0152 bpf, ID = 3.958* 1 L3-1/.4-LNR, 6.6#,13CR-SSTCR .0079bpf, ll)=2.SS' ]-J9947' PERFORATION SUMMARY REF LOG, WkID-GR LOG ON 10/27116 ANGLEAT TOP PERF 93- @ 10495' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL OpniSqz -DATE 2' 6 10495 - 10940 0 10129116 6 10980 - 11305 0 10/29/16 ZSAFE OTES: WELL ANGLE> 700 @ 9236'. -23C ***CHK,.,tAE TBG & LNR***MAX DLS: 43.5* @ 9607'. PBTD 15Z�8 2-718"LNR, 6.5#,13CR-85TF1511,.0058bpf, ll)= �.441' 11-663' 2206'J—{a-112" HESX�NFID��3.813* GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 6 3095 3095 1 MMG DOW RK 16 11/06/16 5 4995 4994 1 MMG SO RFC 20 11/06/16 4 6386 6379 13 MMG DW RK 0 03120/16 3 7451 7373 21 KBG2 DW RK 0 03120/16 2 8222 8083 22 KBG2 DW BK 0 03120116 1 18580 84171 23 1 KBG2 1 DMY I BK 0 08102/11 6W5* 19-5/8" X 7- BKR ZXP LTIP w fTEBK SLV, ID = 6.28" 9-5/8" X 7' BKR HMC HGR w /R NIP, ID = 6,18" I MILLOUT WINDOW (Z -23B) 6718- - 6734' t---860� --4�LTP �W/j FEV BY COMMENTS [71�67:9:2�*-J3.7�0-DEPLO�'��L�. 11) �=3-00" --R�-7/8" X NP, �ID= 2 �3-r 8710"7"-1/2* �BKR S-3 �WJI- ID �=3-870" 13MIND CT 8713* UNDER SIDETRACK (Z -23A) 11/15116 .!I= �3-31 3* 874 7*X5'BKR ZXPLNR TOP PKR DAV/KK SDTRCK ATTEMPT (Z-23AL1 wnr=BK SLV, ID = 4.360" JTG/JMD SET LTP w /PTSA (11/05116) 8766'�-J�5 BKR HMC HG_R w tR NT, K) = 4,25' �674 112" BEHIND 8776- CT LNR 9164' 4-112" MARKER JT w /RA TAG MILLOUT WINDOW (Z -23C) 9280- - 9287' 9677- 1 PUP JTw/RA TAG 9947* 1— 3-3/16" X 2-718* XO, 0) = 2.377" DATE REV BY COMME111TS DATE FEV BY COMMENTS 10118189 FH ORIGINAL COMPLETION 11/02(16 JUJMD FINAL ODE APPROVAL 05106195 UNDER SIDETRACK (Z -23A) 11/15116 JNLIJMD ADDED REF ELEV 07108103 DAV/KK SDTRCK ATTEMPT (Z-23AL1 11/17/16 JTG/JMD SET LTP w /PTSA (11/05116) 09119/04 D16 SIDETRACK (Z -23B) 11/17116 JTG/JMD GLV CIO (11/06116) 1101301161 NORDIC2 CTD (Z -23C) I 111/01/16 JMD DRLG FiQ CORRECTIONS I I I PRLCHOE BAY UNIT VAIL Z -23C PERmrr No: 02160810 API No: 50-029-21950-03 SEC 19, T11K R12F- 4560'NSL & 3214'Wa BP Exploration (Alaska) North America - ALASKA - BP Page 1 of 21 Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations — (hr) (usft) 10/16/2016 09:00 09:30 0.50 MOB P PRE PREP TO JACK UP RIG AND MOVE 09:30 - 09:50 0.33 MOB P PRE PJSM WITH ALL INVOLVED PARTIES. DISCUSS TIGHT TURN COMING OFF WELL -TESTED AND VERIFIED ESD WAS FUNCTIONALAND IS MANNED BY TOOLPUSHER -VERIFIED 12 X 12 WHEEL CHOCK IN PLACE -ASSIGNED SPOTTERS TO AREA OF RESPONSIBILITY -AGREED ON STOP WAS THE COMMAND TO STOP RIG. -PERFORMED RADIO CHECK PRIOR TO MOVING RIG. -DISCUSSED WITH CREW THAT THERE WAS NO BPV INSTALLED -VERIFIED S-103, S-107 & S-111 SHUT IN, DEPRESSURED TO HEADER PRESSURE AND ALL TREE & CASING VALVES ARE LOTO -VERIFIED S-113 TREE AND CASING VALVES ARE SHUT IN 09:50 10:10 0.33 MOB P PRE _ JACK UP RIG AND MOVE OFF S-113 10:10 11:00 0.83 MOB P PRE RIG STAGED ON PAD, PU RIG MATS AND CELLAR T -MATS WELL WORK TRANSFER FORM CLOSED OUT WITH S -PAD OPERATOR S-103, S-107 & S-111 LOTO'S REMOVEDAND CASING VALVES OPENED BY PAD OP TOOL PUSHER AND DRILLER PERFORMING ROUTE DRIVE WHILE LOADING MATS 11:00 13:45 2.75 MOB P PRE MOVE RIG FROM S -PAD TO MOBILE PAD CORNER AND SET RIG DOWN WHILE TOOL SERVICES MOVES RIG MATS TO THE FRONT OF THE RIG 13:45 18:00 4.25 MOB N WAIT PRE RIG STAGED AT MOBILE PAD CORNER WAITING ON RIG MATS TO BE MOVED AHEAD OF THE RIG DETERIORATING ROAD CONDITIONS REQUIRE RIG MATS TO BE USED FOR RIG MOVE. 18:00 - 00:00 6.00 MOB N WAIT PRE CONTINUE MOVING MATS AHEAD OF RIG. RIG IS PARKED AT MOBIL PAD ENTRANCE. CREW CONTINUES HOUSEKEEPING AND MAINTENANCE TASKS. 10/17/2016 00:00 08:20 8.33 MOB N WAIT PRE STAGE RIG AT MOBIL PAD, WAIT FOR RIG MATS TO BE PLACED AHEAD OF RIG. CREW CONTINUES HOUSEKEEPING AND MAINTENANCE TASKS. BRUSH AND OIL 1" CSH IN THE PIPE SHED. COMPLETE RIG MOVE CHECKLISTAND CRITICAL ITEMS INSPECTION CHECKLIST. 08:20 10:00 1.67 MOB P PRE RIG MATS ARE READY MOVE RIG TO Z -PAD ACCESS ROAD 10:00 15:00 5.00 MOB P PRE RIG STAGED AT Z -PAD ACCESS ROAD, WAIT FOR RIG MATS TO BE PLACED WHERE NEEDED Printed 11/7/2016 11:10:01AM "All depths reported in Drillers Depths' North America - ALASKA - BP Operation Summary Report Page 2 of 21 Common Well Name: Z-23 20:30 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00 ) Project: Prudhoe Bay Site. PB Z Pad MOB Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 15:00 18:00 3.00 MOB P PRE RIG MATS ARE IN PLACE, CONTINUE MOVE TO Z -PAD 18:00 18:30 0.50 MOB P PRE RIG IS ON Z -PAD POSITION RIG TO PULL 18:30 20:30 2.00 MOB P 20:30 00:00 3.50 MOB P 10/18/2016 00:00 - 02:45 2.75 MOB P 02:45 - 10:45 8.00 BOPSUR P 10:45 11:15 0.50 CONDHL P 11:15 11:45 0.50 CONS P OVER WELL. CONDUCT PJSM FOR PULLING OVER THE WELL. DISCUSS TESTING AND MANNING ESD WHILE PULLING OVER WELL. DISCUSS USE OF CHOCK BLOCK AND RADIO CHECKS, EVERYONE UNDERSTANDS THE STOP COMMAND. ESD FUNCTION AND PULLOVER WITNESSED BY WSL, TOURPUSHER AND TOOLPUSHER. PULL RIG OVER WELLAND SET DOWN. RIG ACCEPTED 18:30. PRE RIG UP, START SPOTTING AUXILIARY EQUIPMENT. CYCLE TREE VALVES AND INSTALL FUSIBLE CAP, CAP WITNESSED BY WSL. GET GOOD LEAK TIGHT TEST ON SWAB AND MASTER VALVES. PRE PJSM WITH CH2 DRIVERS FOR LIFTING REEL UP. LIFT REEL UP AND SECURE IN THE REEL FRAME. INSTALL 1502 LINE INSIDE REEL. SIMOPS: CONTINUE REMOVING TREE CAP, INSTALLING BOPS. ASSEMBLE GOOSENECKAND STRIPPER. PRE INSTALL GRAPPLE AND PULL TEST. - PULL CTACROSS PIPE SHED ROOF AND INTO INJECTOR. SIMOPS: CONTINUE INSTALLING BOPS. CONDUCT H2S RIG EVAC EXERCISE WITH BEZO_LD CREW, AND A_AR AFTERWARDS. PRE SHELL TEST BOPS, GOOD. - BEGIN BOP TEST AS PER AOGCC AND BP REGS. - TEST WITNESS IS WAIVED BYAOGCC REPRESENTATIVE CHUCK SCHEVE. - FUNCTION BOP RAMS FROM BOTH REMOTE STATIONS, OK. TEST ALL RAMS AND CHOKE VALVES @ 250 / 3500 PSI. TEST ANNULAR PREVENTOR @ 250 / 2500 PSI. - TEST (2) FLOOR SAFETY VALVES @ 250 / 3500 PSI. - PERFORM DRAWDOWN TEST ON ACCUMULATOR, RIG DOWN TEST EQUIPMENT. (1) FAIL/ PASS ... CHOKE VALVE #1 INITIAL TEST FAILED, GREASED AND FUNCTIONED AND PASSED_ RE TEST. PRE PJSM. CIRCULATE COIL TO FRESH WATER. PRE PJSM. BOOT ELINE. - INJECTOR ON WELL, CHECK TREE BOLTS FOR PROPER TORQUE. Printed 11/7/2016 11:10:01AM 'All depths reported in Drillers Depths` North America - ALASKA - BP Page 3 of 21 Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (us -ft) 11:45 - 12:00 0.25 CONS P PRE CONDUCT RIG EVACUATION DRILL H2S 12:00 - 13:00 1.00 CONS P 13:00 - 14:30 1.50 CONS P 14:30 - 15:00 0.50 CONS P 1500 - 15:45 0.75 CONDHL P 15:45 18:00 2.25 CONDHL P 18:00 - 21:30 3.50 CONDHL P 21:30 - 00:00 2.50 CONDHL P 10/19/2016 00:00 - 02:30 2.50 BOPSUR P RELEASE IN CELLAR. - ALL HAND MUSTERED AND ACCOUNTED FOR... (4) MINUTES TO MUSTER AND HEAD COUNT. - CONDUCT AAR. WIND DIRECTION ACCOUNTED FOR, TRUCK DRIVERS MUSTERED ON OTHER SIDE OF RIG. PRE PJSM. PRESSURE TEST PACK OFF AND INNER REEL. - PRESSURE TEST STANDING IRON AND INNER REEL IRON, PRE PJSM. PUMP SLACK INTO REEL. CUT 266' OF COIL. PRE PJSM. MAKE UP CTC AND PULL TEST TO 45K, GOOD. - PRESSURE TEST TO 250 / 3500 PSI, GOOD TEST. PRE PJSM. CIRCULATE THE COIL TO MUD. PRE PJSM. HEAD UP WITH BAKER. MAG E LINE - 550 / 52 PRESSURE TEST BAKER FLOATS, 250/3500 PSI, OK. - REMOVE TEST PLUG. PRE STAB ON AND PT BPV LUBRICATOR. DIFFICULT TO LATCH INTO PLUG. REMOVE BPV LUBRICTOR AND INSPECT PULLING TOOL, LOOKS OK. STAB ON WITH BPV LUBRICATOR AGAIN AND PT. PRE PT BPV LUBRICATOR A SECOND TIME. CONTINUE TO TRYAND ENGAGE PULLING TOOL. SHIFT CHANGE FOR BPV CREW. CONTINUE TRYING TO ENGAGE THE PULLING TOOL, ABLE TO GET IT. PULL TWC ABOVE TREE VALVES, ABOUT 560 PSI. CLOSE MASTER VALVE AND BLEED OFF PRESSURE TO TIGER TANK. FILL TREE WITH MEOH TO BPV LUBRICATOR TO PURGE ANY RESIDUAL GAS. CLOSE SWAB VALVE, REMOVE BPV LUBRICATOR. PRE CONTINUE PULLING TWC. GOT IT ON THE SECOND ATTEMPT. CLOSE MASTER VALVE AND BLEED OFF PRESSURE TO TIGER TANK. FILL TREE WITH MEOH TO BPV LUBRICATOR TO PURGE ANY RESIDUAL GAS. CLOSE SWAB VALVE, REMOVE BPV LUBRICATOR. OFFLOAD TWC LUBRICATOR AND PULLLING TOOLS. Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths* North America - ALASKA - BP Page 4 of 21 Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 02:30 - 04:30 2.00 BOPSUR P PRE BULLHEAD KILL WELLAS PER OCN #1 04:30 - 06:00 1.50 BOPSUR P 06:00 - 07:15 1.25 BOPSUR P 07:15 - 08:10 0.92 STWHIP P 08:10 11:30 3.33 STWHIP P 11:30 11:45 0.25 STWHIP P Printed 11/7/2016 11:10:01AM 'All depths reported in Drillers Depths` PUMP 5 BBLS MEOH, 290 BBLS 1% KCL, 20 BBLS HI -VIS, 150 BBLS MUD. FINAL WHIP IS 1710 PSI. SHUT DOWN PUMP, ALLOW PRESSURE TO BLEED OFF. BLEED GAS CAP IN RISER OUT TO TIGER TANK. BLEED OFF ALL PRESSURE AND OBSERVE 6.5 BBLS BACK WITH SLOWLY DECREASING RATE. NOW FLOWING BACK ABOUT 1-2 BBL/HR. SHUT IN HAND CHOKE AND OBSERVE PRESSURE BUILD AND STABILIZE @ 256 PSI. PRE - SHUT IN AND MONITOR PRESSURE, STABILIZE AT 250 PSI. - DISCUSS WITH WOS, TRY TO BLEED BACK 1 BBL TO OBSERVE PRESSURE RESPONSE. BLED BACK 0.7 BBLS AND MICROMOTION OUT READS "0". - MONITOR WELL, FLOW SLOWLY DROPPING FROM VERY SMALL STREAM TO TRICKLE AND THEN TO INTERMITTENT. CONTINUE TO MONITOR WELL. PRE MONITOR WELL FOR 1/2 HR, WELL IS DEAD. - NO INDICATION OF GAS THROUGHOUT OPERATION. - CALL IN AND REQUEST PERMISSION TO OPEN WELLAND MOVE FORWARD. - REQUEST ACCEPTED AS PER GREG SARBER AND PERMISSION GRANTED. WEXIT PJSM. PICKUP WHIPSTOCK BHA. - MAKE UP INJECTOR, INJECTOR ON WELL @ 08:10 HRS. - TEST QTS @ 250 / 40_00 PSI, OK. OPEN EDC. WEXIT PJSM. RIH PUMPING @.8 BPM. - TIE IN FROM 8930 ... MINUS 28' CORRECTION. WT CHECK 43K UP WT @ 9000'. STOP AND FLOW CHECK WELL DUE TO SIGNIFICANT DROP IN OUT DENSITY. - OUT DENSITY DROPPED TO 8.5 PPG, NO FLOW, WELL BORE STATIC. - LOG CCL DOWN W/ PUMPING A BTMS UP. OUT DENSITY CLIMBED BACK UP TO 9.48 PPG AFTER APPROXIMATELY 15 BBLS PUMPED. - ATTRIBUTE DENSITY DROP TO BREATHING FLUID AND COMINGLE. NO SIGN OF GAS. - O/A = 228, I/A = 0 PSI. DOUBLE CHECK VALVE ALIGNMENT ON I/A. GOOD. WEXIT PJSM. CONFIRM AND SET WHIPSTOCK @ 9280' - CLOSE EDC AND PRESSURE UP TO 4200 PSI, OBSERVE WHIPSTOCK SET. Printed 11/7/2016 11:10:01AM 'All depths reported in Drillers Depths` North America - ALASKA - BP Operation Summary Report Page 5 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 11:45 - 12:45 1.00 STWHIP P WEXIT PJSM. CIRCULATE A BOTTOMS UP THROUGH MUD GAS SEPARATOR. - PUMPING 1.5 BPM @ 1350 PSI, 9.48 PPG IN / 9.46 PPG OUT. - UA = 0 PSI, O/A = 230 PSI. 125 BBLS PUMPED. - MONITOR WELL, (10) MINUTES, STATIC WELL CHECK, NO FLOW. - NO SIGN OF ANY GAS WHILE CIRC BTMS UP. 12:45 - 14:30 1.75 STWHIP P WEXIT FLOW CHECKALL GOOD AFTER CIRCULATING BOTTOMS UP. POH WITH BHA TO SURFACE. - FLOW CHECK WITH BHA BELOW STACK, NO FLOW - PULL BHA INTO BOP STACK, POP OFF WITH INJECTOR ---INJECTOR OFFAT 14.30 14:30 - 16:30 2.00 STWHIP P WEXIT LAY DOWN WHIPSTOCK SETTING BHA. NO DAMAGE TO EQUIPMENT. LINE UP TO FLUSH MUD GAS SEPARATOR HOLE STATIC AT SURFACE STAB ON WITH INJECTOR, ON AT 16:30 16:30 - 19:00 2.50 STWHIP P WEXIT PRESSURE TEST QUICK TEST SUB WHILE MWD EQUIPMENT IS POWERED UP AND FUNCTION TESTED. - BREAK CIRCULATION ON WELL, IMMEDIATE RETURNS - RIH WITH 3.80" MILLING BHA #2 ON .6° BEND MOTOR 19:00 - 00:00 5.00 STWHIP P WEXIT MILL 3.80" WINDOW IN 4-1/2" CASING PER BAKER REP FROM 9280' MD TO 9282' MD RATE: 2.71 BPM IN, 2.71 BPM OUT MUD WEIGHT: 9.50 PPG IN, 9.48 PPG OUT DWOB: 1-3 KLBS CIRC PRESSURE: 3400 PSI AT 9284' DWOB DECREASES FROM ABOUT 1.3K TO 900#. LOSS OF ABOUT 500 PSI MOTOR WORK. 10/20/2016 00:00 - 05:30 5.50 STWHIP P WEXIT MILL 3.80" WINDOW IN 4-1/2" CASING PER BAKER REP FROM 9282' MD TO 9287' MD RATE: 2.71 BPM IN, 2.71 BPM OUT MUD WEIGHT: 9.50 PPG IN, 9.48 PPG OUT DWOB: 1-3 KLBS CIRC PRESSURE: 2970 PSI 03:00 - DURING TIME MILLING AT 9286.3 FT, BHAADVANCED IN A STICK -SLIP FASHION. HAD TO PICK UP TO 9286 FTAND TIME DRILL DOWN AGAIN. - 9,285' SAMPLE SHOWS ALMOSTALL METAL, TRACE OF CEMENT. 05:30 06:45 1.25 STWHIP P WEXIT MILL 3.80 RATHOLE FROM 9,287' TO 9,297' AT 20 - 30 FT/MIN. - RATE: 2.73 BPM IN, 2.75 BPM OUT MUD WEIGHT: 9.52 PPG IN, 9.48 PPG OUT DWOB 1.5KLBS CIRC PRESSURE: 3,170 PSI Printed 11/7/2016 11:10:01AM 'All depths reported in Drillers Depths' North America - ALASKA - BP Operation Summary Report Page 6 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00 OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 06:45 - 08:00 1.25 STWHIP P WEXIT CONDUCT REAM PASSES PER WELL PLAN 08:00 - 10:10 2.17 STWHIP P 10:10 - 11:25 1.25 DRILL P 11:25 14:15 2.83 DRILL P 14:15 19:00 4.75 DRILL P 19:00 - 22:00 3.00 DRILL P Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths' AND UNDER GUIDANCE OF BOT REP. PERFORM 3 REAMING PASSES AT 1'/MIN. REAM UP AT: AS MILLED; MINOR MOTORWORK WHEN AT +15 DEG, -15 DEG - PASSES LOOK GOOD. NO LOSSES TO FORMATION DURING MILLING OR REAM PASSES. - SAMPLE FROM 9297' ALMOST FULLY FORMATION. CIRCULATE DOWN HI -VIS PILL IN CONJUNCTION WITH LAST REAM PASS. - CONDUCT DRY DRIFT AT 30 DEG LOHS (AS MILLED), ALL GOOD - FLOW CHECK, NO FLOW WEXIT POH WITH MILLING ASSEMBLY - NO ISSUES POH. GOOD RETURN OF METAL WITH RETURN OF HI -VIS SWEEP '- FLOW CHECK AT SURFACE, ALL GOOD WITH NO FLOW - PULL BHA INTO BOP STACK, POP OFF WITH INJECTOR WEXIT LAY DOWN MILLING BHA. MILLS GAUGE AT 3.80" GO, 3.79" NO-GO. - CHANGE OUT TO BUILD BHA - MU BUILD BHA #3 WITH 4.25" BIT ON 3.16° BEND MOTOR AND BHI SMART TOOLS --STAB ON WITH INJECTOR WEXIT PRESSURE TEST QUICK TEST SUB WHILE TOOLS ARE BEING POWERED UP, FUNCTION TESTED RIH WITH BUILD BHA LOG TIE-IN WITH -30' CORRECTION NO ISSUES EXITING WINDOW PROD1 DRILLAHEAD FROM 9297'. FREE SPIN OF 3030 PSI AT 2.83 BPM. - DRILL BUILD TO 9,630' MD - RATE: 2.60-2.85 BPM IN, 2.60-2.85 BPM OUT. CIRC PRESSURE: 3150 - 3615 PSI - MICROMOTION MUD WEIGHT: 9.55 PPG IN, 9.55 PPG OUT, ECD: 10.70 PPG - ROP: 68-115 FT/HR, WOB: 1.3-4.6 KLBS - INFREQUENT SHALE STRINGERS BUT OTHERWISE GOOD DRILLING PROD1 POOH. PUMP 10 BBLS LO/HI VIS SWEEPS AROUND. MONITOR WELL FOR 10 MINUTES WITH DYNAMIC FLOW CHECK, GOOD. 0.52 BPM IN / 0.47 BPM OUT MUD WEIGHT: 9.56 PPG IN, 9.59 PPG OUT RATE: 2.80 BPM IN, 2.79 BPM OUT OPEN EDC, POH FROM 9,280' MD TO SURFACE. JET WHIPSTOCK TRAY WITH OPEN EDC. RATE: 3.5 BPM. CIRC PRESSURE: 3,000 PSI SWEEPS RETURN ABOUT 20% EXCESS CUTTINGS WHEN RETURNED TO SURFACE. Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths' North America - ALASKA - BP Operation Summary Report Page 7 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12,00 OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 22:00 22:50 0.83 DRILL P PROD1 MONITOR WELL FOR 10 MINUTES AT BHA: STATIC CLOSE EDC, POWER DOWN INJECTOR OFF: 22:00 BIT GRADE 1-1 MAKE UP 3.0" DRILLING BHA #4 - PICK UP 2-7/8" ULS MOTOR (1.17 DEG AKO) AND 3" COI LTRAK TOOLS MAKE UP HYC 3.75 X 4.25 BICENTER BIT SURFACE TESTED BHI TOOL. GOOD TEST. PRESSURE TEST QTS TO 250 PSI LOW FOR 5 MINUTES / 3,500 PSI HIGH FOR 5 MINUTES - INJECTOR ON: 22:50 22:50 00:00 1.17 DRILL P PROD1 RI WITH 3" DRILLING BHA #4 FROM TO 8,950' MD - RATE: 0.4 BPM IN, 0.4 BPM OUT. CIRC PRESSURE: 800 PSI MUD WEIGHT: 9.45 PPG IN, 9.55 PPG OUT LOG DOWN FOR TIE-IN FROM 8,950' TO 9,300' MD (RA TAG) WITH -26' CORRECTION 10/21/2016 00:00 - 02:30 2.50 DRILL P PROD1 CONTINUE RUN BACK TO BOTTOM WITH BHA #4 LOG DOWN FOR TIE-IN FROM 8,950' TO 9,300' MD (RA TAG) WITH -26' CORRECTION 02:30 - 05:00 2.50 DRILL P PROD1 DRILL 4.25" LATERAL FROM 9,630' MD TO 9,750' MD FREE SPIN: 3,200 PSI, 2.85 BPM RATE: 2.84 BPM IN, 2.82 BPM OUT. CIRC PRESSURE: 3,200 - 3,500 PSI - MUD WEIGHT: 9.54 PPG IN, 9.53 PPG OUT, ECD: 10.65 PPG ROP: 100 FT/HR, WOB: 0.9 - 2.0 KLBS AT 9,750' PUMP 10 BBLS LO/HI VIS SWEEPS AROUND 05:00 - 09:30 4.50 DRILL P PROD1 DRILL 4.25" LATERAL FROM 9,750' MD TO 10,050' MD FREE SPIN: 3,400 PSI, 3.08 BPM RATE: 2.89-3.08 BPM IN, 2.86-3.07 BPM OUT. CIRC PRESSURE: 3,400 - 3,800 PSI - MUD WEIGHT: 9.56 PPG IN, 9.59 PPG OUT, ECD: 10.78 PPG. MW SLOWLY BUILT TO 9.62 PPG WITH DRILLING AND LONG WIPER. ROP : 78-104 FT/HR, WOB: 0.9 - 3.0 KLBS 09:30 10:30 1.00 DRILL P PROD1 PERFORM WIPER TRIP FROM 10,050' MD TO 9300' MD - RATE: 2.80 BPM IN, CIRC PRESSURE: 3350 PSI - PUMPED 10 BBL LO -VIS / 10 BBL HI -VIS COMBO SWEEP AT BOTTOM BEFORE TRIP. - TRIP UP AND DOWN SMOOTH WITH NO INDICATIONS OF HOLE TROUBLE - LOG DOWN FOR TIE-IN WITH +7.5' CORRECTION CONTINUE TRIP BACK DOWN TO BOTTOM Printed 11/7/2016 11:10:01AM `All depths reported in Drillers Depths" North America - ALASKA - BP Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00 ) Page 8 of 21 Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 10:30 - 18:00 7.50 DRILL P PROD1 DRILL LATERAL FROM 10,050' MD TO 10,445' MD FREE SPIN: 3500 PSI, 2.89 BPM RATE: 2.89-3.0 BPM IN, 2.74-2.93 BPM OUT. CIRC PRESSURE: 3640-3740 PSI - MICROMOTION MUD WEIGHT: 9.63 PPG IN, 9.64 PPG OUT, ECD: 10.80 PPG - ROP: AVERAGING 80 FT/HR, WOB: 1.5 — 2.7 KLBS - CONDUCTING SHORT PICKUPS FREQUENTLY TO TRANSFER WEIGHT TO BIT, PREVENT DRILL -OFF. PICKUPS CONSISTENT BUT GETTING STICKY WITH A COUPLE OF 8-10K OVERPULLS ON THE PICKUP TO BREAKOVER. - SWAP TO NEW MUD SYSTEM, PRESSURES DROPPED BY 300 PSI, PUW REMAINED THE SAME AT 42-44K, AND SOW INITIALLY IMPROVED FROM AVERAGING -14K UP TO 4K BUT THEN FELL BACK OF TO -12 TO -16K (HAVING TO PUSH DOWN WITH INJECTOR TO GET COIL TRANSFER). 18:00 21:20 3.33 DRILL P PROD1 PERFORM LONG WIPER TRIP UP ABOVE WINDOW FROM 10,445' MD TO 8,900' MD - RATE: 2.86 BPM IN, 2.71 BPM OUT. CIRC PRESSURE: 3,200 PSI ABOVE WINDOW, OPEN EDC PUMP 4.3 BPM ! 4,000 PSI FOR 2 B/U. PUMP 10 BBLS LO / HI VIS SWEEPS AROUND, RETURN ABOUT 10% EXCESS CUTTINGS CLEAN PASS UP LOG DOWN FOR TIE-IN FROM 9,30070 RA TAG WITH +10.5' CORRECTION CLOSE EDC, RIH TO BOTTOM USE REDUCED RATE AND KEEP A GOOD TF TO BOTTOM - BLED IA FROM 1,100 PSI TO 100 PSI. 21:20 00:00 2.67 DRILL P PROD1 DRILL 4.25" LATERAL FROM 10,445' MD TO 10,540' MD FREE SPIN: 3,000 PSI, 2.76 BPM RATE: 2.76 BPM IN, 2.75 BPM OUT. CIRC PRESSURE: 3,000 - 3,300 PSI - MUD WEIGHT: 9.55 PPG IN, 9.55 PPG OUT, ECD: 10.79 PPG ROP: 80 FT/H R, WOB: 2 -4KLBS DRILLING WITH POSITIVE STRING WEIGHT AFTER THE WIPER, HOWEVER ONLY LASTS ABOUT 40 FT. DISCUSS WITH ODE, INCREASE LUBE NXS BY 0.5%, BRINGING IT TO 2.5%. EZ -GLIDE AT 2%. Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths* North America - ALASKA - BP Page 9 of 21 Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) - - (usft) 10/22/2016 100:00 - 02:30 2.50 DRILL P PROD1 DRILL 4.25" LATERAL FROM 10,540' MD TO 02:30 - 05:30 3.00 DRILL P 0530 - 13:15 7.75 DRILL P 13:15 14:15 1.00 DRILL P 10,615' MD FREE SPIN: 3,650 PSI, 3.06 BPM RATE: 3.06 BPM IN, 3.05 BPM OUT. CIRC PRESSURE: 3,650 - 3,800 PSI MUD WEIGHT: 9.61 PPG IN, 9.61 PPG OUT, ECD: 10.79 PPG ROP: 0 - 80 FT/HR, WOB: 0 - 2KLBS DIFFICULT SLIDING, HARD TO TURN AROUND ON WIPER TRIP. PUMP 10 BBLS LO / HI VIS SWEEPS AROUND PULL FREQUENT 200 FT WIPER TRIPS. AT 10,615 FT UNABLE TO GET WEIGHT ON BIT. PROD1 PERFORM LONG WIPER TRIP TO WINDOW FROM 10,615" MD - RATE: 3.04 BPM IN, 2.84 BPM OUT. CIRC 'PRESSURE: 3,500 PSI. ABOVE WINDOW, PUMP 1.5X B/U AT 4.26 BPM / 4,050 PSI. FAIR AMOUNT OF CUTTINGS COMING BACK. TIE IN DEPTH, CORRECT+10.5'. CLOSE EDC, RUN BACK TO BOTTOM. PUMP REDUCED RATE THROUGH SHALES, KEEP AS — DRILLED TOOLFACE. PROD1 DRILL 4.25" LATERAL FROM 10,615' MD TO 10,864' MD FREE SPIN: 3,400 PSI, 2.97 BPM RATE: 2.97 BPM IN, 2.97 BPM OUT. CIRC PRESSURE: 3,400 - 3,800 PSI - MUD WEIGHT: 9.55 PPG IN, 9.56 PPG OUT, ECD: 10.75 PPG ROP: 0 - 50 FT/HR, WOB: 0 - 4KLBS SIGNIFICANT DIFFICULTY IN SLIDING. ENCOUNTERING STICK -SLIP WHILE ON BOTTOM TO DRILL. ABLE TO APPLY WOB FOR SHORT DURATIONS BUT HAVE TO PICK UP EACH TIME IT DRILLS OFF. - VARY FLOW RATE FROM 2.65 BPM TO 3.01 BPM IN ATTEMPT TO CHANGE SOMETHING FOR DRILLING RESULTS, ONLY REAL HELP IS FREQUENT 200' TO 300' WIPERS. - NXS LUBRICANT RATIO HAD BEEN BUILT BY .25% DURING NIGHT WITH NO REAL RESULT. DEVELOP PLAN TO INCREASE LSRV INCREMENTALLY TO -50K IN HOPE TO HELP MOVE CUTTINGS AND TO SLOWLY INCREASE NXS LUBRICANT PERCENTAGE. - CONTINUE TO DRILL UTILIZING FREQUENT PICKUPS DUE TO STICK -SLIP BUT ABLE TO APPLY WOB AND DRILL -OFF PRINCIPLE FAIRLY EFFECTIVELY. PROD1 CONDUCT WIPER UP TO WINDOW IN PREPARATION FOR EP LUBE PILL - PULL TO WINDOW, HOLE SEEMS TO BE FAIRLY CLEAN - PUW -45K ON TRIP UP Printed 11/7/2016 11:10.01AM "All depths reported in Drillers Depths* North America - ALASKA - BP Operation Summary Report Page 10 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 14:15 17:15 3.00 DRILL P PROD1 OPEN EDC, JET ACROSS WHIPSTOCK TRAY. CIRC DOWN 10 BBL LO -VIS PILL. - CHASE PILL OUT AT 4.1 BPM, 4000 PSI. INCREASE OF 20% IN CUTTINGS JUST AHEAD OF PILL, SEEING LARGER SIZED CUTTINGS ALSO. RETURN WAS STEADY STREAM OF INCREASED CUTTINGS. - PUMP DOWN 15 BBL LO -VIS, 30 BBL EP MUD LUBE, 15 BBL LO -VIS AND 15 BBL HI -VIS PILL PER OCN. CIRCULATE IT OUT OF HOLE SLOWLY IN ATTEMPT FOR EP LUBE TO REACT WITH TUBING. - CIRCULATE PILL OUTAND DUMP AT SURFACE -CLOSE EDC 17:15 - 18:30 1.25 DRILL P PROD1 RIH AT 30 FPM, CIRCULATING AT MIN RATE OF .55 BPM, 1205 PSI. SLACK OFF WEIGHTAT THIS RUNNING SPEED 20-22K; SLACK OFF WEIGHT AT 35 FPM OF 18-20K _ - MW IN 9.55 PPG, MW OUT 9.58 PPG 18:30 00:00 5.50 DRILL P PROD1 'DRILL 4.25" LATERAL FROM 10,865' MD TO 11,000' MD FREE SPIN: 3,790 PSI, 3.00 BPM RATE: 3.00 BPM IN, 3.00 BPM OUT. CIRC PRESSURE: 3,780 - 3,900 PSI MUD WEIGHT: 9.63 PPG IN, 9.56 PPG OUT, ECD: 10.93 PPG ROP: 0 - 50 FT/HR, WOB: 0 - 4KLBS SIGNIFICANT DIFFICULTY IN SLIDING. ENCOUNTERING STICK -SLIP WHILE ON BOTTOM TO DRILL. ABLE TO APPLY WOB FOR DRILLING 10 - 20 FT THEN HAVE TO PICK UP FOR 200 FT WIPER. - AROUND 22:00 SEE SOME RUBBER PIECES COME ACROSS SHAKER. MOTOR STILL APPEARS TO BE WORKING, WHEN THE CT IS ABLE TO SLIDE. - PUMP 10 BBLS LO / HI VIS SWEEPS AROUND 10,950'. NO INCREASE IN CUTTINGS WHEN THEY RETURN. DISCUSS WITH MUD ENGINEER, ADD ANOTHER 0.25% NXS LUBE SLOWLY TO THE MUD SYSTEM. Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths* North America - ALASKA - BP Page 11 of 21 Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) - (usft) 10/23/2016 00:00 01:00 1.00 DRILL P PROD1 DRILL 4.25" LATERAL FROM 11,000' MD TO 11,021' MD FREE SPIN: 3,790 PSI, 3.00 BPM RATE: 3.00 BPM IN, 3.00 BPM OUT. CIRC PRESSURE: 3,780 - 3,900 PSI - MUD WEIGHT: 9.64 PPG IN, 9.59 PPG OUT, ECD: 10.93 PPG - ROP: 0 - 50 FT/HR, WOB: 0 - 4KLBS -VERY DIFFICULT TO SLIDE. NEED TO PICK UP EVERY 10 - 20' DRILLED AND PULL 300 FT WIPER. -PUMP 10 BBLS LO/Hl VIS SWEEPS AROUND 11,000'. NO INCREASE IN CUTTINGS WHEN THEY RETURN. - DURING LAST WIPER, CAN'T GET BACK DOWN PAST 10,975' BASE OF 45N SHALE. TRY VARIOUS RUNNING SPEEDS AND PUMP RATES, STACKING WEIGHT NOT AT THE DWOB BUT SOMEWHERE BEHIND THE BHA. 01:00 02:00 1.00 DRILL P PROD1 PERFORM LONG WIPER TRIP TO WINDOW FROM 11,021' MD RATE: 3.00 BPM IN, 2.84 BPM OUT. CIRC PRESSURE: 4,100 PSI. DURING WIPER, SEE CIRC PRESSURE SPIKE. LIKELY CAUSED BY MOTOR RUBBER, STILL GETTING A SMALL AMOUNT OF RUBBER PIECES COMING BACK. DISCUSS WITH DD, DECIDE TO TRIP ALL THE WAY OUT AND REPLACE MOTOR. ABOVE WINDOW, OPEN EDC PUMP 3.97 BPM / 4,050 PSI. FAIR AMOUNT OF CUTTINGS COMING BACK. PLUGGING OUT MM OCCASIONALLY. 02:00 04:00 2.00 DRILL N DFAL 11,021.00 PROD1 POOH FOR FAILED MOTOR. - CONTINUE PUMPING 3.97 BPM / 4,020 PSI ALL THE WAY OUT. 04:00 - 05:00 1.00 DRILL N DFAL 11,021.00 PROD1 MONITOR WELL FOR 10 MINUTES AT BHA: STATIC CLOSE EDC, POWER DOWN INJECTOR OFF: 04:00 BIT IS 1-1 WITH 2 PLUGGED JETS, RUBBER FROM MOTOR. MAKE UP 3.0" DRILLING BHA#5 PICK UP 2-7/8" ULS MOTOR (1.2 DEG AKO) AND 3" COI LTRAK TOOLS MAKE UP3.75 X 4.25 HCC BICENTER BIT SURFACE TESTED BHI TOOL. GOOD TEST. PRESSURE TEST QTS TO 250 PSI LOW FOR 5 MINUTES / 3,90OPSI HIGH FOR 5 MINUTES, GOOD TEST INJECTOR ON 05:00 05:00 07:00 2.00 DRILL N DFAL 11,021 00 PROD1 RIH WITH 4.25" DRILLING BHA #5 RATE: 2.0 BPM IN, CIRC PRESSURE 1960 PSI MUD WEIGHT: 9.58 PPG IN, 9.58 PPG OUT LOG DOWN FOR TIE-IN WITH -29.5' CORRECTION - PUW IN CASED HOLE 36 KLBS, SOW 20 KLBS AT 8600' MD AFTER LOGGING Printed 1117/2016 11:10:01AM *All depths reported in Drillers Depths* North America - ALASKA - BP Operation Summary Report Page 12 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 07:00 - 08:00 1.00 DRILL P PROD1 NO ISSUES EXITING WINDOW ENTER INTO 08:00 - 09:30 1.50 DRILL P 09:30 - 13:30 4.00 DRILL N SFAL 13:30 15:30 2.00 DRILL P OPEN HOLE, INITIAL SOW INCREASED TO 22K. - RIH AT MIN RATE OF .5 BPM, 1115 PSI. SEEING SLIGHT BOBBLES ON TRIP IN. LOSS OF WEIGHT AT 10,000' CORRESPONDS TO SMALL STRINGER ON LOG. NO ISSUES RUNNING PAST 10,300' OR ON REST OF TRIP TO BOTTOM PROD1 DRILL 4.25" LATERAL FROM 11,021' MD TO 11,071' MD FREE SPIN: 3,790 PSI, 2.85 BPM RATE: 3.00 BPM IN, 3.00 BPM OUT. CIRC PRESSURE: 3,780 - 3,900 PSI - MUD WEIGHT: 9.64 PPG IN, 9.59 PPG OUT, ECD: 10.93 PPG ROP: 0 - 50 FT/HR, WOB: 0 - 4KLBS VERY DIFFICULT TO SLIDE. NEED TO PICK UP EVERY 10 - 20' DRILLED AND PULL 300 FT WIPER. - OBSERVING PRETTY STEADY RUN OF CUTTINGS RETURNS MICROMOTION IN AND OUT ARE BEING PLUGGED OFF CONSISTENTLY. WORK TO CLEAR, UNABLE TO MAINTAIN CONSISTENCY IN READINGS. 11,071.00 PROD1 PULL TO WINDOW TO GET TO SAFE SPOT TO WORK ON BLOWDOWN. - POH AT 1.45 BPM, 1600 PSI. PUW OF 43K. TRIP UP WAS CLEAN - PARKAT WINDOWAND BLOWDOWN MICROMOTION. STILL HAVING BACKPRESSURE AT WELLHEAD. BLOWDOWN BY-PASS LINES, SIGNIFICANT AMOUNTS OF PEA -SIZE TO QUARTER -SIZE SILTSTONE (SOMEANGULAR AND SOME ROUNDED) AND METAL DEBRIS (FROM THE WINDOW) THAT HAD ACCUMULATED FROM BLOWING DOWN THE MICROMOTION. - OPEN EDC AND CIRCULATE BOTTOMS UP WITH LO -VIS / HI -VIS PILL COMBO, NO REAL CHANGE IN VOLUME OF CUTTINGS ACROSS PROD1 BACK ON BOTTOM AT 11,071'. FREE SPIN OF 3545 PSI AT 2.90 BPM. - MAKE MANY ATTEMPTS TO DRILL AHEAD WHILE VARYING PUMP RATES, RUNNING SPEED TO TAG BOTTOM IN ATTEMPT TO ENGAGE BIT. CONDUCT MANY SHORT PICKUPS (ALL CLEAN) BUT CANNOT GET ANY MOTORWORK. - PUMP DOWN PILL COMBO AND USE FAST RUNNING SPEED TO FLUSH BOTTOM, NO GO. - DISCUSS ALTERNATIVES WITH ODE, DECIDE ON PULLING FOR AGITATOR - MW IN 9.62 PPG, MW OUT 9.61 PPG, ECD HAD RISEN FROM 10.71 PPG TO 11.01 THROUGHOUT TODAYS DRILLING ATTEMPTS Printed 11/7/2016 11:10:01AM 'All depths reported in Drillers Depths' North America - ALASKA - BP Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Page 13 of 21 Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 15:30 19:30 4.00 DRILL N DPRB 11,081.00 PROD1 POH FOR TRIP TO SURFACE TO CHANGE OUT BHA. FLOW CHECK OFF BOTTOM, SLIGHT LOSSES TO FORMATION. - POH AT 3.0 BPM, 3560 PSI, SLOWING RATE THROUGH SHALE INTERVALS OF CONCERN - TRIP UP CLEAN, NO OVERPULLS. LOST 40 BBLS TO FORMATION WHEN PUMPING HARD ON TRIP UP. - PULL INTO WINDOW, OPEN EDC TIMING LO-VISAND HI -VIS COMBO ACROSS WINDOW AND WHIPSTOCK. BEGIN TRIP UP HOLEAT MAX RATE. LOSING -23 BPH WHILE PULLING UP HOLE AT 4.08 BPM, 4000 PSI. 19:30 20:30 1.00 DRILL N DPRB 11,081.00 PROD1 MONITOR WELL FOR 10 MINUTES AT BHA: STATIC CLOSE EDC, POWER DOWN INJECTOR OFF: 19:40 BIT IS 1-1 WILL RE -RUN. FILL WELL WITH 3.5 BBLS. 20:30 - 23:30 3.00 DRILL N DPRB 11 081.00 PROD1 REMOVE BHI CABLE HEAD 23:30 00:00 0.50 BOPSUR 10/24/2016 00:00 00:30 0.50 BOPSUR 00:30 - 03:30 3.00 DRILL RIG UP HYDRAULIC CT CUTTER, CUT 100 FT OF CT OFF FOR CHROME MANAGEMENT. INSTALL SLB CT CONNECTOR AND PULL TEST, GOOD. INSTALL CABLE HEAD, PRESSURE TEST 300 PSI FOR 5 MIN, 3,900 PSI FOR 5 MIN, GOOD. WHILE MAKING UP CABLE HEAD, PUMP 5.5 BPM ACROSS TREE AND THROUGH OUT MM TO CLEAR ITAND THE BYPASS OF ANY REMAINING CUTTINGS. N DPRB 11,081.00 PROD1 FUNCTION TEST BOPS FROM DRILLERS - PANEL. N DPRB PROD1 MAKE UP 3.0" DRILLING BHA #6 - PICK UP 2-7/8" ULS MOTOR (1.2 DEG AKO) AND 3" COILTRAK TOOLS - MAKE UP 3.75 X 4.25 HCC BICENTER BIT, RE -RUN - SURFACE TESTED BHI TOOLAND AGITATOR, GOOD TEST. - PRESSURE TEST QTS TO 250 PSI LOW FOR 5 MINUTES / 3,900PSI HIGH FOR 5 MINUTES, GOOD TEST INJECTOR ON 00:30 N DPRB PROD1 RIH WITH 3.0" DRILLING BHA#6 FROM SURFACE TO 9,320' MD RATE: 2.1 BPM IN, 2.6 BPM OUT MUD WEIGHT: 9.57 PPG IN, 9.60 PPG OUT LOG DOWN FOR TIE-IN FROM 9,320' TO LOG RA TAG. WITH -30' CORRECTION PERIODIC PLUGGING OUT MM WHILE RIH. Printed 11/7/2016 11:10:01AM 'All depths reported in Drillers Depths' North America - ALASKA - BP Operation Summary Report Page 14 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI:500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 03:30 - 06:30 3.00 DRILL P PROD1 DRILL 4.25" LATERAL FROM 11,083" MD TO 11,218" MD - FREE SPIN: 3,570 PSI, 2.71 BPM - RATE: 2.72 BPM IN, 2.62 BPM OUT. CIRC PRESSURE: 3,570 - 4,000 PSI - MUD WEIGHT: 9.58 PPG IN, 9.67 PPG OUT, ECD: 11.04 PPG ROP: 60 - 120 FT/HR, WOB: 1-3 KLBS START NEW MUD DOWN THE CT AS PART OF DUMP AND DILUTE. - AT 11,160 FT PULL 200 FT WIPER TRIP, STACKING WT (NOTAT BIT) GOING BACK THROUGH 45N SHALE. ATTEMPT PICKUP OFF BOTTOM, STUCK 06:30 06:45 0.25 DRILL N DPRB 11,218.00 PROD1 FULL RETURNS, CANNOT WORK UP OR DOWN, CAN ORIENT. DIFFERENTIALLY STUCK. - WORK PIPE PER WELL PLAN. CIRCULATE AND THEN DOWN ON PUMPS TO ALLOW TO REST. PICK UP, FREE. - CONDUCT SHORT WIPER, ALL SEEMS GOOD. 06:45 07:30 0.75 DRILL P PROD1 DRILL 4.25" LATERAL FROM 11,218" MD TO 11,236" MD - FREE SPIN: 3,570 PSI, 2.71 BPM - RATE: 2.73 BPM IN, 2.67 BPM OUT. CIRC PRESSURE: 3,620 - 3,880 PSI - MUD WEIGHT: 9.63 PPG IN, 9.56 PPG OUT, ECD: 10.8 PPG - ROP ERRATIC DUE TO PICKUPS, WOB: 1.0-2.9 KLBS - PICK UP TO BLOW DOWN MICROMOTION, STUCK 07:30 10:45 3.25 DRILL N DPRB 11,236.00 PROD1 ATTEMPT TO WORK PIPE WHILE CREW BLOWS DOWN MICROMOTION. NO SUCCESS IN GETTING FREE. FULL RETURNS, ABLE TO ORIENT. - FOLLOW WELL PLAN FOR STICKING MECHANISM - CIRCULATE AROUND, ALLOW TO RELAX. NO GO ON GETTING FREE. - LINE-UP FOR MINERAL OIL. FOLLOW PLAN FOR PUMPING SPACERS AND MINERAL OIL. - CIRCULATE DOWN AND ALLOW TO SOAK. PICK UP, FREE AT 48K PICK UP WEIGHT (-6K OVER) - IMMEDIATELY WORK PIPE UP AND THEN DOWN TO CIRCULATE SPACERS AND MINERAL OIL OUT - LINE UP CREW FOR TRIP TO WINDOW PER DIRECTION FROM ODE FOR CIRCULATION STRATEGY 10:45 12:15 1.50 DRILL N DPRB 11,236.00 PROD1 PULL UP HOLE TO WINDOW PICK UP AND TRIP UP VERY CLEAN. CIRCULATE AT 3.5 BPM, 3320 PSI ON INITIAL TRIP UP. LOWER RATE BEFORE APPROACHING FAULT AT 10,080'. - NO ISSUES UP AND INTO WINDOW. Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths* North America - ALASKA - BP Operation Summary Report Common Well Name: Z-23 Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 Project: Prudhoe BaySi Pte B Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Contractor: NORDIC CALISTA Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task _ (hr) 12:15 - 14:00 1.75 1 DRILL 14:00 - 15:00 1.00 DRILL 1500 - 1800 3.00 Page 15 of 21 AFE No X3-017YD-C: (3,155,216.00) Rig Release: 10/30/2016 UWI: 500292195000 Code NPT NPT Depth Phase Description of Operations (usft) _ N DPRB 11,236.00 PROD1 OPEN EDC, JET ACROSS WHIPSTOCK TRAY SEVERAL TIMES. CIRCULATE DOWN 15 BBL 100K LSRV PILL. - POSITION EDC AT WINDOW AS PILL EXITS - CIRCULATE PILL OUT OF WELL WHILE PICKING UP BHA SLOWLY TO CHASE IT OUT. CHASE ALL THE WAY OUT OF WELL. MICROMOTION PLUGGED OFF 4 TIMES, NEEDED TO BE BLOWN DOWN. CUTTINGS RETURNS REALLY DID NOT INCREASE WITH SWEEP RETURN. ONCE HI -VIS PILL WAS AT SURFACE AND DISPOSED OF, RAN BHA BACK DOWN AT HIGH RUNNING RATE. CIRCULATED ANOTHER BOTTTOMS UP IN SAME MANNER, PLUGGED OFF MICROMOTION 1 MORE TIME BUT NOTHING MORE REMARKABLE OVER SHAKER. CONTINUE PULLING UP WITHOUT ISSUES AT MICROMOTION OR AT SHAKER. N DPRB 11,236.00 PROD1 TURNAROUND, LOG TIE-IN MOVING DOWN WITH +11' CORRECTION. CLOSE EDC, EXIT WINDOW AND RIH WITH NO ISSUES. RIH AT MIN RATE OF .55 BPM, 1135 PSI. CLEAN TRIP ALL THE WAY DOWN. P PROD1 DRILL 4.25" LATERAL FROM 11,236' MD TO 11,390' MD - FREE SPIN: 3,800 PSI, 2.73 BPM RATE: 2.72-2.77 BPM IN, 2.62-2.75 BPM OUT. CIRC PRESSURE: 3,870 - 4,210 PSI MUD WEIGHT: 9.62 PPG IN, 9.59 PPG OUT, ECD: 10.96 PPG ROP: 25 - 80 FT/HR, WOB: 2.45-4.0 KLBS 18:00 20:10 2.17 DRILL P PROD1 DRILL 4.25" LATERAL FROM 11,236' MD TO 11,418' MD FREE SPIN: 3,800 PSI, 2.73 BPM RATE: 2.72-2.77 BPM IN, 2.62-2.75 BPM OUT. CIRC PRESSURE: 3,870-4,210 PSI MUD WEIGHT: 9.62 PPG IN, 9.59 PPG OUT, ECD: 10.96 PPG ROP: 25 - 80 FT/HR, WOB: 2.45-4.0 KLBS PUMP 10 BBLS LO/HI VIS SWEEPS AROUND. NO INCREASE IN CUTTINGS WHEN SWEEP RETURNS. CONDUCT NUMEROUS SHORT WIPERS WHEN MOTOR WORK DRILLS OFF, DURING WIPER FROM 11,418' CAN'T GET BACK TO BOTTOM, STACKING WEIGHT SOMEWHERE BEHIND THE BHA. 20:10 22:30 T 2.33 DRILL P PROD1 PERFORM LONG WIPER TRIP TO WINDOW FROM 11,418' MD TO 8,900' MD RATE: 2.80 BPM IN, 2.44 BPM OUT. CIRC PRESSURE: 3,940 PSI PUMP 10 BBLS LO/HI VIS SWEEPS AFTER PULLING THROUGH THE WINDOW, DUMP THE LO -VIS AT SURFACE. SLIGHT INCREASE IN CUTTINGS AT HI -VIS RETURN, WITH SOME LARGER SIZED ROCKS. CLEAN PASS UP THROUG OPEN HOLE. Printed 11/7/2016 11:10:01AM 'All depths reported in Drillers Depths* North America - ALASKA - BP Page 16 of 21 Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,21&00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 22:30 - 22:50 0.33 DRILL P PROD1 WHILE PUMPING B/U CONDUCT H2S RIG 2250 - 00:00 1.17 DRILL P 10/25/2016 00:00 - 00:30 0.50 DRILL P 00:30 - 03:30 3.00 03:30 - 05:15 1.75 DRILL P DRILL P 05:15 - 07:15 2.00 DRILL P Printed 1117/2016 11:10:01AM *All depths reported in Drillers Depths" EVAC EXERCISE WITH ELLINGTON CREW. ALL CREW + 1 CH2 DRIVER MUSTER IN PRIMARY MUSTER AREA (UPWIND) AND ARE ACCOUNTED FOR IN 2 MIN. CONDUCTAAR FOLLOWING THE DRILL. PROD1 CONTINUE PUMPING WITH OPEN EDC UNTIL RETURNS CLEAN UP, ABOUT 3X B/U. TIE-IN DEPTH AT RA FROM 9,300', CORRECT +10'. RIH TO BOTTOM. PROD1 CONTINUE WIPER TO BOTTOM. DIFFICULT TO PASS 10,950' SHALE. STACK WT HERE SEVERAL TIMES WITH REDUCED PUMP RATE, AS DRILLED TF. GO TO 1 BPM, AS DRILLED TF, EASE PAST AT 1 FT/MIN STOPPING ATANY MOTOR WORK. FINALLY ABLE TO PASS, CONTINUE TO BOTTOM. PROD1 DRILL 4.25" LATERAL FROM 11,418' MD TO 11,525' MD - FREE SPIN: 3,750 PSI, 2.82 BPM - RATE: 2.82 BPM IN, 2.77 BPM OUT. CIRC PRESSURE: 3,750 - 4,100 PSI - MUD WEIGHT: 9.62 PPG IN (NEW MUD), 9.52 PPG OUT, ECD: 11.1 PPG - ROPAROUND 100 FT/HR AFTER BREAKING THROUGH 120' SHALE AT 11,420' - PUMP 10 BBLS LO/HI VIS SWEEPS AROUND, DUMP THE LO -VIS AT SURFACE. PROD1 PICKUP FROM 11,525' IS 80K, DIFFERENTIAL STICKING. PULL 300' WIPER. DIFFICULT TO GET BACK TO BOTTOM, NOT SLIDING WELL. CONTINUE DRILLING FROM 11,525'. FREE SPIN: 3,900 PSI, 2.78 BPM RATE: 2.77 BPM IN, 2.77 BPM OUT. CIRC PRESSURE: 3,900 - 4,200 PSI - MUD WEIGHT FROM MM READINGS: 9.68 PPG IN, 9.53 PPG OUT, ECD: 11.03 PPG NOTE: MUD ENGINEER MEASURED MUD WEIGHT WITH PRESSURIZED BALANCE, FOUND 9.5 PPG IN / OUT. IN MM READING HIGH. ROP IS ERRATIC, STICK SLIP DRILLING. PUMP 10 BBLS LO/HI VIS SWEEPS AROUND, DUMP THE LO -VIS AT SURFACE. DRILL TO 11,562'. PROD1 PERFORM WIPER TRIP FROM 11,562' MD TO 11,000' MD - RATE: 2.77 BPM IN, 2.55 BPM OUT. CIRC PRESSURE: 4,090 PSI - RUN BACK DOWN FROM 11,000' AT 1 BPM WITH NO ISSUES BY 10,900' INTERVAL. BRING PUMP RATE UP TO 2.6 BPM AS BHA APPROACHES AREA OF CONCERN AT 11,300'. PRETTY RATTY HOLE CONDITIONS FROM 11,060-11,150' AND THEN AGAIN FROM 11,310-11,440'. - TAG BOTTOM AT UNCORRECTED DEPTH OF 11,556'. Printed 1117/2016 11:10:01AM *All depths reported in Drillers Depths" North America - ALASKA - BP Operation Summary Report Page 17 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00 ) Project. Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 07:15 13:30 6.25 DRILL P PROD1 DRILL 4.25" LATERAL FROM 11,556' MD TO 11,723' MD FREE SPIN: 3860 PSI, 2.65 BPM RATE: 2.65-2.82 BPM IN, 2.58-2.77 BPM OUT. CIRC PRESSURE: 4,045 - 4,320 PSI - MUD WEIGHT: 9.62 PPG IN (NEW MUD), 9.52 PPG OUT, ECD: 11.1 PPG ROP ERRATIC AT 25-65 FT/HR WELL WENT ON LARGE LOSSES FOR SHORT TIME AT 11,630' (LOG SHOWS FAULT). FLUIDS WERE ALREADY BUILT AT PLANT, MOBILIZED TRUCK TO GET OUT TO LOCATION. LOSSES SLOWED BUTAVERAGING -15 BPH PICK UP OFF BOTTOM, CLEAN PICK UP INITIALLY BUT THEN UNABLE TO MOVE. ABLE TO ORIENT AND FULL RETURNS, DIFFERENTIALLY STUCKAT 11,117'. 13:30 16:15 2.75 DRILL N STUC 11,723.00 PROD1 WORK PIPE PER WELL PLAN, CBU AND THEN RELAX. CIRCULATE DOWN NEW MUD AROUND COIL INTO OPEN HOLE, LOSSES DURING CIRCULATION AVERAGING 12-15 BPH. 'ALLOW TO RELAX AND RE -ATTEMPT TO WORK PIPE FREE. CANNOT GET FREE. - MINERAL IN PLACE, CONTINUE TO CIRCULATE WHILE KCL SPACER PILL IS BUILT. LOSSES AT THIS TIME -8-10 BPH. MINERAL OIL WITH KCL SPACERS WORKED, FREE AFTER SOAKING -2 MINUTES WHILE IN TENSION. - MOVE PIPE, DRILLAHEAD TO 11,735' WHILE CIRCULATING MINERAL OIL UP TO WINDOW 16:15 19:00 2.75 DRILL P PROD1 PLANNED WIPER TRIP TO WINDOW. INITIAL RATE OF 2.85 BPM, 3815 PSI. - DROP RATE TO 1 BPM THROUGH SHALE INTERVAL OF 11,440' UP TO 11,300' - BRING RATE BACK UP ONCE PAST, CONTINUE UP AT 2.82 BPM, 3600 PSI MW IN 9.68 PPG (READING HEAVY IN COMPARISON TO MUD CHECKS WITH DENSITY SCALE), MW OUT 9.52 PPG (WILL CALIBRATE MICROMOTION ON NEXT TRIP TO SURFACE), ECD OF 11.17 PPG - PULL INTO WINDOWAND OPEN EDC WITH HI -VIS PILLAT BIT. CIRCULATE HI -VIS PILL UP WHILE PICKING UP HOLE. MICROMOTION HAD BUILD UP TO CAUSE BACK PRESSURE SEVERAL TIMES. - WITH HI -VIS PILLAT SURFACE, TURN AROUND AND GO TO WINDOWAGAIN. CIRCULATE ANOTHER 1-1/2 TIMES BOTTOMS UP WHILE PICKING UP. BACKFLUSH MICROMOTION SEVERAL TIMES TO CLEAR. SHAKER AND MICROMOTION CLEAR. - CLOSE EDC WHILE MOVING BACK DOWN TOWARDS WINDOW Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths* North America - ALASKA - BP Operation Summary Report Page 18 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:00 - 20:45 1.75 DRILL P PROD1 RUN DOWN AND LOG TIE-IN WITH +16' CORRECTION. - NO ISSUES PAST WINDOW. RIH AT 1.0 BPM ALL THE WAY TO BOTTOM. HOLE CONDITIONS VERY FAVORABLE. MINOR AREAS OF ERRATIC WEIGHT BUT OVERALL GOOD TRIP DOWN. 20:45 21:30 0.75 DRILL P PROD1 DRILL 4.25" LATERAL FROM 11,735' MD TO 11,778' MD FREE SPIN: 3860 PSI, 2.63 BPM RATE: 2.65-2.82 BPM IN, 2.58-2.77 BPM OUT. CIRC PRESSURE: 4,045 - 4,320 PSI MUD WEIGHT: 9.62 PPG IN (NEW MUD), 9.52 PPG OUT, ECD: 11.1 PPG - ROP ERRATIC AT 25-65 FT/HR BECAME DIFFERENTIALLY STUCK 21:30 00:00 2.50 DRILL N STUC - 11,778.00 PROD1 WORK PIPE PER WELL PLAN, CBU AND THEN RELAX. - ALLOW TO RELAX AND RE -ATTEMPT TO WORK PIPE FREE. CANNOT GET FREE. PUMP MINERAL OIL INTO PLACE, LOSSES AT THIS TIME -8-10 BPH. - MINERAL OIL WITH KCL SPACERS WORKED, FREE AFTER SOAKING -2 MINUTES WHILE IN TENSION. - MOVE PIPE AND PERFORM WIPER WHILE CIRCULATING PILL OUT. MM PLUGGING SPORADICALLY WHILE PUMPING BOTTOMS UP 10/26/2016 00:00 - 06:00 6.00 DRILL P PROD1 I DRILL 4.25" LATERAL FROM 11778' MD TO 11,925' MD FREE SPIN: 3600 PSI, 2.60 BPM RATE: 2.60 BPM IN, 2.55 BPM OUT. CIRC PRESSURE: 3700-4200 PSI - MUD WEIGHT: 9.67 PPG IN, 9.56 PPG OUT, ECD: 11.23 PPG - ROP: 60-80 FT/HR, WOB: 1.5 - 3.0 KLB START WIPER TO WINDOW. PREPARE FOR — MUD SWAP. 06:00 09:30 3.50 DRILL P PROD1 PULL UP THROUGH SHALE. PULLED HEAVY AT 11445', WORK THROUGH. - CONTINUE TRIP UP WITH ONLY SLIGHT BOBBLES BUT NO REAL ISSUES. PULL INTO WINDOW, CIRCULATE HI -VIS SWEEP DOWN ANDAROUND. HAVE TO BLOW DOWN MICROMOTION SEVERAL TIMES. - AVERAGE PICK UP WEIGHT 42K. TRIP UPCLEAN WITH NO ISSUES OR OVERPULLS. - PULL INTO WINDOW, OPEN EDC. JET ACROSS WINDOW. CIRCULATE HI -VIS PILL DOWN AND THEN CHASE OUTAT4.05 BPM, 4025 PSI, WHILE PULLING UP HOLE SLOWLY. MICROMOTION NEEDED BLOWING DOWN SEVERAL TIMES WITH HI -VIS PILL COMING UP AND THEN AGAIN WITH SECOND BOTTOMS UP. - SHAKER CLEANED UP, CLOSE EDC. LOG TIE-IN GOING DOWN WITH +13' CORRECTION. - MW IN 9.51 PPG, MW OUT 9.50 PPG, LOSSES OF 6-8 BPH Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths* North America - ALASKA - BP Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Page 19 of 21 Project: Prudhoe Bay Site. PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 09:30 - 12:15 2.75 DRILL N DPRB 11,445.00 PROD1 RIH WITH BHA CIRCULATINGAT.53 BPM, 1385 PSI. VERY CLEAN TRIP DOWN. FIRST INDICATIONS OF SET DOWN AT 11,247'. ANOTHER SET DOWN AT 11,297'. - COME ON WITH PUMPS TO 2.72 BPM, 3700 PSI. TAKING WOB AND -200 PSI DIFFERENTIAL WORK TO GET DOWN. FIGHT DOWN TO 11,725' BUT ONLY MOVING AT 2-4 FPM AND AS MUCH AS -15K SLACK OFF WEIGHT. - DISCUSS WITH TOWN, DECIDE TO CONDUCT ANOTHER WIPER IN ATTEMPT TO CLEAN HOLE 12:15 17:00 4.75 DRILL N DPRB 11,300.00 PROD1 - PICK UP CLEAN. TRIP UP RELATIVELY CLEAN WITH NO ISSUES OR OVERPULLS. STOP AT 11,200' AND TURN AROUND TO SEE IF BHA CAN GET DOWN EASILY. VERY PROBLEMATIC, AGAIN TAKING WOB AND DIFFERENTIAL MOTORWORK TO MOVE DOWN AT 4 FPM. TURN AROUND AT 11,300'. - PICK UP TO RESUME WIPER TO WINDOW, OVERPULLAT 11,020' PULL INTO WINDOW, OPEN EDC. JET ACROSS WINDOW, OPEN EDC AND CONTINUE TO JET. CBU WITHOUT USE OF PILLS, PEA -SIZE CUTTINGS ACROSS SHAKER AND HAVE TO PURGE MICROMOTION 4 TIMES. RUN BACK TO WINDOW WITH HI -VIS PILL EXITING EDCATWINDOW. CBUAGAIN, MORE PEA -SIZE RETURNS BUT LESS VOLUME. BLOWDOWN MICROMOTION SEVERAL TIMES BUT THEN RETURNS CLEANED UP. - TURNAROUND AND CLOSE EDC, COMPLETE WIPER TRIP BACK TO BOTTOM. HOLE IN GOOD CONDITION, NOTHING REMARKABLE ABOUT TRIP DOWN UNTIL 11,031'; SET DOWN AT 11,031'. PICKUP, WORK THROUGH AND CONTINUE DOWN. - HAVE TO BRING ON PUMPSAT 11,200' TO 2.8 BPM, 3880 PSI TO WORK DOWN. WORK DOWN WITH POSITIVE SLACK OFF WEIGHT OF 11-12K, 1.25K WOB AND -200 PSI MOTOROWRK. SLACK OFF WEIGHT EVENTUALLY FALLS OFF. - NOT MAKING MUCH PROGRESS PAST 11,360'. PICK UP OFF BOTTOM WHILE TALKING TO ODE DUE TO STICKINESS. - MW IN 9.55 PPG, MW OUT 9.51 PPG, _,- - LOSSES RANGING FROM 5-8 BPH 17:00 20:00 3.00 DRILL N DPRB 11,300.00 PROD1 PICK BACK UP HOLE WHILE TOWN DISCUSSES OPTIONS. - PICK UP CLEAN. AVERAGE PICK UP WEIGHT STARTED AT 42K, DROPPED OFF TO 38KAT WINDOW. TRIP UP RELATIVELY CLEAN WITH NO ISSUES OR OVERPULLS. - PULL INTO WINDOW, OPEN EDC. JET ACROSS WINDOW. CIRCULATE LO -VIS / HI -VIS COMBO DOWN MICROMOTION PLUGGED. RECTIFY BY BACKFLUSHING. Printed 11/7/2016 11:10:01AM *All depths reported in Drillers Depths* North Amedca - ALASKA - BP Operation Summary Report Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PBZ Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:00AM Rig Release: 10/30/2016 Page 20 of 21 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations — (hr) (usft) 20:00 - 21:00 1.00 DRILL N DPRB 11,300.00 PROD1 RIH FROM WINDOW TO 11353' MD - RATE: 0.40 BPM IN, 0.52 BPM OUT. CIRC PRESSURE: 1300 PSI MUD WEIGHT: 9.58 PPG IN, 9.50 PPG OUT FROM 11263' WOB INCREASING DOWN TO A UNCORRECTED TAG AT 11353' PICK OFF BOTTOM CLEAN. PU WEIGHT 40K 21:00 - 00:00 3.00 DRILL N DPRB 11,300.00 PROD1 PERFORM WIPER TRIP TO WINDOW FROM 11 353'MD TO WINDOW - RATE: 2.93 BPM IN, 2.61 BPM OUT. CIRC PRESSURE: 4102 PSI CLEAN TRIP FROM BOTTOM TO WINDOW. OPEN EDC AT WINDOW. JET TRAY RATE: 4.21 BPM IN, 4.13 BPM OUT. PUMPED LO / HI VIS COMBO SWEEP. NO INCREASE IN CUTTINGS SEEN. MICROMOTION PLUGGED UP THREE TIMES. LOG DOWN FOR TIE-IN FROM 9300' TO 9325' MD (RA TAG) WITH +11.5' CORRECTION CHASE UP TO 8400' 10/27/2016 00:00 - 01:00 1.00 DRILL N DPRB 11,300.00 PROD1 LOG CCL FROM 8400' WHILE CIRCULATING HOLE. HOLE CLEAN UP 01:00 02:30 1.50 DRILL N DPRB 11,300.00 PROD1 GETTIING 1 PPM H2S READING AT SHAKER. VERIFY WITH HAND HELD GAS METER. DISCUSS WITH SUPERINTENDENT. MUD ENGINEER GOING TO TREAT WITH H2S SCAVENGER. PERFORM FLOW CHECK. WELL ON 2-3 BPH LOSS. RETURNS CLEANING UP. RIH AND VERIFY TIE IN -0.5' CORRECTION. 02:30 05:10 2.67 DRILL N DPRB 11,300.00 PROD1 CLOSE EDC. RIH TO VERIFY BOTTOM RATE: 0.42 BPM IN / 0.42 BPM OUT MW IN: 9.54 PPG, MW OUT 9.50 PPG OUT. NO ISSUES WITH RUN IN HOLE. RUN BY LAST TAG OF 11353'. RUN IN HOLE TO 11420' -PICKUP THROUGH SHALE. SLIGHT OVERPULLAT 11350' CALL SUPERINTENDENT AND DISCUSS PLAN CHANGE. DECISION TO HEAD TO BOTTOM 05:10 - 07:00 1.83 DRILL P PROD1 RIH WITH CAUTION. SLIGHT TAG AT 11360'. PU AND RUN BACK DOWN AND TAG AT 11370'. START TO PU AND POPPED BY. RIH TO 11750'. PERFORM CLEAN PICK UP 43K. CONTINUE IN TO A CORRECTED TD OF 11927'. MIX 2PPB STICKLESS BEADS IN LINER RUNNING PILLAND SEND DOWN COIL. Printed 1117/2016 11:10:01AM *All depths reported in Drillers Depths* North America - ALASKA - BP Operation Summary Report Page 21 of 21 Common Well Name: Z-23 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 10/16/2016 End Date: 10/27/2016 X3-017YD-C: (3,155,216.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 07:00 14:20 7.33 DRILL P PROD1 START LAYING BEADS IN FROM CORRECTED TD OF 11,927' - LAY IN LINER PILLAT 1.0 BPM WHILE PULLING AT 50 FPM ON TRIP UP HOLE TO WINDOW. TRIP WAS VERY SMOOTH, NO ISSUES OR BOBBLES. OPEN EDC, FLUSH ACROSS WINDOW SEVERAL TIMES. - SEND NEW 9.5 PPG MUD DOWN COIL TO CIRCULATE OLD MUD OUT OF SYSTEM AT 3.8 BPM. PACK OFF MICROMOTION WHEN PUMPING AT HIGH RATES RIGHT INSIDE OF WINDOW. - CIRCULATE NEW MUD AROUNDAT.53 BPM, 810 PSI (WAITING ON SECOND TRUCK TO ENSURE FLUID REQUIREMENTS AT SURFACE ARE MET BEFORE PULLING). CIRCULATE FROM WINDOW TO KEEP CUTINGS IN POSITIVE FLOW UPWARDS. PUMP DOWN 20 BBL LO -VIS / 10 BBL HI -VIS SWEEP, RETURNS BROUGHT UP MORE PEA -SIZE CUTTINGS BUT MICROMOTION DID NOT PLUG OFF. BRING RATE UP TO 4.35 BPM, 4050 PSI WHILE PULLING UP HOLE TO SURFACE - JOG DOWN NUMEROUS TIMES WITH DIMINISHING CUTTINGS DURING EACH JOG. LOSSES AVERAGED 4 BPH ON TRIP UP. PULL BHA TO SURFACE, FLOW CHECK. FLOW CHECK GOOD. PULL BHA INTO BOP, POP OFF 14:20 15:00 0.67 DRILL P PROD1 LD BHA. BHAAND COIL COVERED WITH STICKY, BLACK COATING. BIT GRADE 1 -1 -NO. SEE CON REPORT FOR CONTINUED OPERATIONS SUMMARY Printed 11/7/2016 11:10:01AM 'All depths reported in Drillers Depths` Printed 11/7/2016 11:10:32AM `All depths reported in Drillers Depths' North America - ALASKA - BP Page 1 of 5 Operation Summary Report Common Well Name: Z-23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 10/27/2016 End Date: 10/30/2016 X3-017YD-C: (1,720,544,00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UN: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations _ (hr) -- — — (hr) - I (usft — — ) - -- 10/27/2016 15:00 - 23:30 8.50 CASING P RUNPRD STAND INJECTOR TO SIDE. CHANGE OUT PACKOFFS, PRESSURE TEST, PUMP SLACK FORWARD, CUT 385' OF ELINE AND 220' OF PIPE. PREP COILAND INSTALL BOT CTC. PRESSURE TEST TO LOW 300 / HIGH 3750 GOOD TEST -INSTALL CAP / TEST PLUG. PT PACKOFFS -PREPARE FLOOR FOR LINER RUN 23:30 00:00 0.50 CASING P RUNPRD MAKE UP SHOE TRACKAND START RUNNING 2-7/8" LINER 10/28/2016 00:00 06:00 6.00 CASING P RUNPRD CONTINUE TO MAKE UP LINER PER THE APPROVED SUMMARY. FILL PIPE EVERY 20 JOINTS. MAKE UP LINER RUNNING TOOLAND PH6. TEST QTS TO 300# LOW / 4000# HIGH 0600 08:15 2.25 CASING P RUNPRD RIH WITH 2 -7/8"X3 -1/4"X3-1/2" LINER ASSEMBLY - WINDOW FLAG ON DEPTH, PICK UP WEIGHT AT WINDOW 43K, SLACK OFF WEIGHT 20K. -RUN INTO OPEN HOLE. NO ISSUES AND FAIRLY SMOOTH TO 11,000'. BEGIN TO WORK AT GETTING DOWN. HAVE TO PICK UP AND WORK THROUGH 11,215'. 0815 14:15 6.00 CASING P RUNPRD WORK PIPE TO GET DOWN - VARY FLOW RATES AND RUNNING SPEEDS, USE RECIPROCATION TO WORK PIPE DOWN - ENCOUNTERING SIGNIFICANT RESISTANCE ALL THE WAY DOWN TO 11,459'. CANNOT WORK PAST 11,459'. PICK UP AND ATTEMPT HIGH RUN IN RATE, NO GO. ATTEMPT TO WORK THROUGH WITH NO PUMPS, PUMPING AT 1.0 BPM, PICKING UP TO WORK THROUGH. NO-GO. PICK UP TO GET RUNNING START, STACKING OUTAT 11,305'. CONTINUE WITH ATTEMPTS WHILE MINERAL OILAND SPACER PILLS ARE BEING LINED UP. PUMP DOWN 15 BBL HI -VIS / 16 BBL MINERAL OIL/ 15 BBL HI -VIS COMBO. - ABLE TO GAIN BETWEEN 10-30' EACH TIME PIPE IS WORKED. Printed 11/7/2016 11:10:32AM `All depths reported in Drillers Depths' North America - ALASKA - BP Operation Summary Report Page 2 of 5 Common Well Name: Z-23 00:00 3.00 AFE No Event Type: COM- ONSHORE (CON) Start Date: 10/27/2016 End Date: 10/30/2016 X3-017YD-C: (1,720,544.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor. NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 14:15 - 16:30 2.25 CASING P RUNPRD CIRC PRESSURES ARE LIMITING FACTOR 16:30 - 21:00 4.50 CASING P 21:00 00:00 3.00 CASING P 10/29/2016 00:00 01:00 1.00 CASING P DUE TO RUNNING ASSEMBLY RESTRICTIONS TO 1800 PSI. -MINERAL OIL OUT AND INTO FORMATION. PUMPING 1-2 BBLS EACH TIME IN ATTEMPT TO PROLONG SLIDING DURATION. - SLACK OFF WEIGHT HAS GONE FROM POSITIVE WEIGHT DOWN TO 11,375' TO NEGATIVE WEIGHTS AS COIL IS BEING PUSHED BY FILL OR DEBRIS. PICKUP WEIGHT HAS INCREASED FROM 43K IN CASED HOLE (VERY SIMILAR PUW WHILE DRILLING ON BOTTOM ALSO) TO AS HIGH AS 63K WHEN PICKING UP AFTER STACKING OUT WHEN WORKING PIPE. - REST OF MINERAL OIL OUT, NO MOVEMENT PAST 11,550'. PICK UP IN ATTEMPT TO 'CHARGE DOWN, NO MOVEMENT PAST 11,529'. PICK UP WAS HEAVYAT 73K. BRING ON PUMPS TO HIGHEST RATE OBTAINABLE WITHIN THE 1800 PSI LIMIT. - INITIAL CIRCULATION AT 1.30 BPM, 1600 PSI, 'OUT RATE OF 1.12 BPM FOR LOSS AVERAGE OF 10 BPH. SETTING DOWN WITH 12K OF INJECTOR "PUSH", NO MOVEMENT FROM 11,516' KEEP WORKING PIPE. - DISCUSS OPTIONS WITH ODE, GIVEN NOTICE TO SET ON DEPTH AT 11,516'. PERF MEMO IS BEING REVISED. RUNPRD BEGIN TO DISPLACE FROM 9.5 PPG MUD SYSTEM TO 8.5 KCL SYSTEM. DISPLACE TO 1% KCL W/ 0.6% CFS -520. MANIPULATE LINER UP AND DOWN WHILE CYCLING PUMPS WHEN WELL ROLLED OVER TO KCL APPLIED PRESSURE TO WELLBORE AND DUMP CHOKE. DISCUSS PLAN FORWARD WITH ODE. RUNPRD DISCUSS WITH BOT REP. BRING PUMP RATE UP 2.61 BPM IN / 2.54 BPM OUT IN AN ATTEMPT TO GET MOVEMENT. APPEARS TO BE A SOLID TAG AT THE -11550' MIX UP 20 BBL HI VIS SWEEP PUMP INTO OPEN HOLE. ATTEMPT PU AND RUN AT. NO GO. CONTINUE CIRCULATING. RUNPRD RELEASE FROM LINER LAUNCH 5/8" STEEL BALL DISPLACE BALL: 3.4 BPM AT 2400 PSI REDUCE PUMP RATE TO 0.75 BPM (700 PSI) AT 30 BBLS AWAY BALL LANDED WITH 40 BBLS AWAY PRESSURE UP, BALL SEAT SHEARED AT 3700 PSI - PU: 40K, CONFIRM LINER RELEASED Printed 11/7/2016 11:10:32AM *All depths reported in Drillers Depths* North America - ALASKA - BP Operation Summary Report Page 3 of 5 Common Well Name: Z-23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 10/27/2016 End Date: 10/30/2016 X3-017YD-C: (1,720,544.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) - 01:00 04:00 3.00 CASING P RUNPRD MIX AND PUMP 28.0 BBLS OF CEMENT: - FILL LINES WITH WATER AND PRESSURE TEST TO 5000 PSI FOR 5 MINUTES CEMENT WETAT02:15 HRS. ZERO IN MM ONCE DENSITY = 13.5 PPG LOAD 28 BBLS 15.3 PPG CEMENT IN REEL SWAP TO RIG PUMP. CLEANUP LINES TO SLB UNIT. PERFORM DISPLACEMENT WITH RIG PUMPS - DISPLACE CEMENT WITH 8.4 PPG EXHAUST PILL -RATE: 2.59 BPM IN, 2.50 BPM OUT 1600# CIRC PRESSUREO - ZERO OUT MM WITH CEMENTAT SHOE AT 73.5 BBLS AWAY - TAKE RETURNS TO PIT 4 FOR MANUAL STRAP (3 BBLS START STRAP) - SHUT DOWN PUMPS AT 80.3 BBLS AWAY (6.5 BBLS BEHIND PIPE) LAUNCH PEEWEE DART AND LINER WIPER PLUG AS FOLLOWS: - PICK UP TO BREAKOVER +12 FT (11526' MD) PER BTT REP, EXPOSE DOGS, SET DOWN AT 11541' MD (10 FT HIGHER) - SET DOWN 10KAT 11541' MD AND LAUNCH PEE WEE DART. RESSURE UP TO 1500# - SHIFT LINER WIPER PLUG DOWN, PICK BACK UP TO 11530' MD AND SIDE EXHAUST 5 BBLS PRESSURE UP ON WIPER PLUG TO 2000# AND ZERO MM. - LINER WIPER PLUG SHEARED AT 3850 PSI (0.4 BBLS) DISPLACE LINER WIPER PLUG 19.3 BBLS DISPLACED AT 1.8 BPM: 2400 PSI PLUG BUMPED AT 19.3 BBLS, 3500 PSI (19.2 BBLS CALCULATED) - OPEN BAKER CHOKE AND CHECK FLOATS. GOOD TEST. - CLOSE BAKER CHOKE, PRESSURE UP TO 1500 PSI ON COIL, PICKUP AND CONFIRM PRESSURE DROP CEMENT IN PLACE: 03:54 HRS 25.0 BBLS CEMENT BEHIND PIPE, BASED ON MANUALSTRAP. - TOTAL LOSSES FROM CEMENT EXIT SHOE TO CEMENT IN PLACE: 3 BBLS 04:00 04:50 0.83 CASING P RUNPRD JET ON LINER TOP TO CHASE CEMENT AWAY FROM LINER WITH 10 BBLS UNSTING FROM LINER TOP. JETACROSS GLM #1. CIRCULATE CEMENT OUT OF HOLE. 3.25 BPM IN / 3.16 BPM OUT RETURNS CLEANED UP. BRING RETURNS INSIDE. 04:50 06:00 1.17 CASING P RUNPRD MONITOR WELL FOR 10 MINUTES: STATIC MUD WEIGHT: 8.44 PPG IN, 8.38 PPG OUT RATE: 2.61 BPM IN, 2.22 BPM OUT 06:00 07:20 1.33 CASING P RUNPRD POH TO SURFACE. FLOW CHECKAT SURFACE FOR 10 MINUTES, NO FLOW. - PULL BHA INTO BOP, POP OFF AND STAND INJECTOR TO SIDE Printed 11/7/2016 11:10:32AM *All depths reported in Drillers Depths* North America - ALASKA - BP Operation Summary Report Page 4 of 5 Common Well Name: Z-23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 10/27/2016 End Date: 10/30/2016 X3-017YD-C: (1,720,544.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 07:20 06:15 0.92 CASING P RUNPRD LD BHA. RECOVER 5/8" BALL. - CLEAR AND CLEAN RIG FLOOR. CUT COIL CONNECTOR AND INSTALL, PRESSURE AND PULL TEST INTERNAL CONNECTOR. 08:15 10:15 2.00 PERFOB P OTHCMP INSPECT CERTS FOR HALLIBURTON EQUIPMENT. - LOAD IN PERF GUNS WHILE CONTINUING TO PREP FOR PERF RUN 10:15 10:30 0.25 PERFOB P OTHCMP PJSM FOR PICKING UP PERFORATION ASSEMBLY. - DISCUSS LIFTING, HANDLING OF GUNS AND REST OF BHA, SAFETY JOINT AND XO, MARKING OFF CELLAR AND RIG FLOOR, H2S CONDITIONS AND MUSTER AREA - CALL TO SITE CONTROL TO LIMIT MOVEMENT TO RIG 10:30 - 15:00 4.50 PERFOB P OTHCMP MU 2.0" PERF BHA#8 - MU GUNS ACCORDING TO PERF MEMO. MU FIRING HEAD WITH 5-1/2 HR DELAY ON ACTIVATION TO GIVE IT TIME TO RIH. -MU RUNNING ASSEMBLY AND WORK STRING PER RUNNING ORDER. CONDUCT KICK WHILE MAKING UP JOINTED PIPE DRILL WITH SIMULATED FLOWAT ROTARY. CREW RESPONDED IMMEDIATELY BY PICKING UP SAFETY JOINT (ALREADY TORQUED UP WITH FSVAND LIFT SUB) AND MAKING UP TO ASSEMBLY, TORQUE AND CLOSE WITH KEY IN 2 MINUTES. GIVEALL CLEAR. - COMPLETE MAKE-UP OF RUNNING TOOLS, STAB ON WITH INJECTOR 15:00 17:00 2.00 PERFOB P OTHCMP PRESSURE TEST QUICK TEST SUB, RIH WITH ASSEMBLY - RIH, TAG PBTD AT UNCORRECTED DEPTH OF 11,533'. CONFIRM WITH 3ITERATIONS. PICK UP TO NEUTRAL, CORRECT CTDS DEPTH TO PBTD DEPTH OF 11,537' FROM LINER RUN - PICK UP HOLE TO SET BOTTOM OF GUNS ON DEPTH AT 11,306.50- 17 00 1,306.50'17:00 18:00 1.00 PERFOB P OTHCMP PJSM FOR PRESSURE TESTING AND CYCLE FOR PERFORATING. - CLOSE IN AND BRING UP CIRCULATION RATE IN ATTEMPT TO CONDUCT PRESSURE TEST CEMENTED LINER LAP TO 2400 PSI. PRESSURE BROKE OVER AT 2180 PSI AT 1.65 BPM AND COULD NOT BUILD ANY FURTHER PRESSURE. STOP TEST. TEST DID NOT PASS BP CRITERIA LINE UPAND BEGIN PRESSURING CYCLE FOR PERFORATION. COMPLETE CYCLE PER PLAN, DEFINITE INDICATION OF SHOTS FIRING FROM AUDIBLE AND FLUID LOSS. INITIAL LOSSES AT 26 BPH, TAPERED OFF AS BHA CAME UP HOLE. PERFORATION INTERVAL 10,495' TO 11,304' 18:00 19:25 1.42 PERFOB P OTHCMP PICKUP FROM FIRING AND CLOSE IN TO HOLD 225-250 PSI BACK PRESSURE AS BHA IS PULLED THROUGH LINER RATE: 2.07 BPM IN / 1.87 BPM OUT MW: 8.48 PPG IN / 8.45 PPG OUT Printed 11/7/2016 11:10:32AM 'All depths reported in Drillers Depths' North America - ALASKA - BP Operation Summary Report Page 5 of 5 Common Well Name: Z-23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 10/27/2016 End Date: 10/30/2016 X3-017YD-C: (1,720,544.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 6/7/1989 12:00:OOAM Rig Release: 10/30/2016 Rig Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:25 - 1940 0.25 PERFOB P OTHCMP AT LINER TOP. OPEN CHOKE FULLY. PERFORM 10 MIN FLOW CHECK. WELL -- STATIC. 19:40 - 22:30 2.83 PERFOB P OTHCMP - MUD WEIGHT: 8.42 PPG IN, 8.44 PPG OUT RATE: 1.82 BPM IN, 1.13 BPM OUT 22:30 - 23:30 1.00 PERFOB P OTHCMP ! PERFORM 10 MIN FLOW CHECK WELL STATIC LAY DOWN 2-1/16" CS HYDRIL. 70 JOINTS 1-1/4" HYDRIL 23:30 - 00:00 0.50 PERFOB P OTHCMP PJSM WITH TCP CREW. MAKE ANNOUNCEMENTS. BARRICADE CELLAR. LAY DOWN FIRING HEAD. START LAYING DOWN FIRED GUNS. 10/30/2016 00:00 - 0200 2.00 PERFOB P OTHCMP FINISH LAYING DOWN PERF GUNS. MAKE UP FREEZE PROTECT BHA 02:00 - 03:30 1.50 WHSUR P POST RIH WITH NOZZLE TO 2500' LAY IN 38 BBLS DIESEL WITH 100' METHANOL CAPACROSSTREE. TAG UP. VALVE CREW SERVICE TREE. CLOSE MV / SWAB. PERFORM LTT TO 3500#, HOLD PRESSURE WHILE BLOWING DOWN. 03:30 - 04:00 0.50 CONDHL P POST PJSM, RU HALLIBURTON NITROGEN PERFORM PRESSURE X -CHECK. PERFORM 300# LOW/ 3900# HIGH. SET AND TEST TRIPS AT 3700# 04:00 - 06:00 2.00 CONDHL P POST SPEAR INTO REEL WITH 5 BBLS METHANOL COME ONLINE WITH NITROGEN. BLOW REEL DOWN. 06:00 12:00 6.00 WHSUR P POST CONTINUE WITH RIG DOWN DOWN OPERATIONS. - OPEN BOP DOORS TO INSPECT, CLEAN RAMS. RAMS HAD "STICKY" RESIDUE AND WELLBORE CUTTINGS RESIDUE IN THE CAVITIES. - ORDERED OUT HOT, SLIGHTLY SOAPY WATER TO CLEAN PITS OF SAME "STICKY" RESIDUE TO AVOID CONTAMINATING NEW MUD SYSTEM ON NEXT WELL. - MOVING SUPPORT EQUIPMENT OFF LOCATION - SUBMIT NOTICE FOR BOP TEST TO AOGCC AT 1115 HRS ON 10/30/2016 FOR 1500 HRS START TIME ON 10/31/2016 - TREE CAP INSTALLED, TESTED. WELL SECURE. RIG RELEASE 1200 HRS. - SEE RON EVENT FOR DS 7-15 FOR FOLLOW ON OPERATIONS. Printed 11/7/2016 11:10:32AM *All depths reported in Drillers Depths* Z -23C (Post -Rig Sidetrack) T/I/O = 0/0/0. R/D Test Spool #03 . Installed tree cap flange and PT'd to 4000 psi (PASSED) 11/1/2016 RDMO ***Job Complete*** SEE LOG FOR DETAILS. Final T/I/O = 0/0/0. ***WELL S/I ON ARRIVAL*** (ctd) DRIFT TBG & LINER TO DEV @ 9,287' SLM (s.bailer empty) LOG FROM 9,000' SLM TO 8,000' SLM w/ SLB MEMORY LOG (good data) TAG DEPLOYMENT SLEEVE W/ 4-1/2" PTSA STINGER DRIFT @ 8,660' SLM/ 8,692' 11/4/2016 MD. SET 45KB LTP w/ PTSA STINGER (12.83' OAL) 8660' SLM / 8692' MD LRS PERFORM PASSING MIT -T. (see Irs log) PULLED 2-7/8" XX PLUG FROM PTSA @ 8658' SLM SET 4-1/2" WHIDDON CATCHER SUB @ 8,655' SLM. PULLED RK-DGLVs FROM ST #5 @ 4,995' MD & 3095' MD SET RK-LGLV IN ST #6 @ 3095' MD 11/5/2016 ATTEMPT TO SET RK-OGLV IN ST #5 @ 4995' MD **WSR continued from 11 -4-16**T/1/0=7/0/1 01 Assist slickline (PT LTP) MIT T **PASSED** to 2620 psi. Max applied psi = 2700 psi. Target pressure = 2430 psi. Pumped 3.5 bbls of crude down tbg to reach test pressure. 15 min T lost 65 psi. 30 min T lost 26 psi. Total loss of 91 psi in 30 mins. Bled TP back to 62 psi. Bled back 2 bbls. Slickline still on 11/5/2016 well at LRS departure. FWHP= 62/vac/101. North America - ALASKA - BP Prudhoe Bay PB Z Pad Z-23 Z -23C 500292195003 Design: Z -23C Final Survey Report 01 November, 2016 we P P -_- 'A kv BAKER HUGHES 20.00 by BP RUN ;,.•� Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Local Coordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z-23B @ 81.06usft (Doyon 16) Site: PB Z Pad MD Reference: Z-23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z-23C Survey Calculation Method: Minimum Curvature Design: Z-23C Database: EDM RSK- Alaska PROD -ANCP1 Project Prudhoe Bay, GPB, PRUDHOE BAY 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 PB Z Pad, TR-11-12 Site Position: Northing: 5,957,230.170 usft Latitude: 70° 17'33.051 N From: Map Easting: 601,304.820 usft Longitude: 149° 10'47.365 W Position Uncertainty: 0.00 usft Slot Radius: 0.000 in Grid Convergence: 0.77 ° Well Z-23 Well Position +NI-S 0.00 usft Northing: 5,959,360.030 usft Latitude: 70° 17'54.240 N +EI-W 0.00 usft Easting: 599,459.070 usft Longitude: 149° 11'40.333 W Position Uncertainty 0.00 usft Wellhead Elevation: 55.36 usft Ground Level: 56.02 usft Wellbore Z-23C Magnetics Model Name Sample Date Declination Dip Angle Field Strength (nT) BGGM2016 11/1/2016 18.06 80.97 57,554 Design Z-23C Audit Notes: Version. Phase: ACTUAL Tie On Depth: 9,263.64 Vertical Section: Depth From (TVD) +NI-S +EI-W Direction (usft) (usft) (usft) (I — 25.70 0.00 0.00 120.00 11/1/2016 1:23:32PM Page 2 COMPASS 5000.1 Build 818 2rN b Inc BP TVD TVDSS :. _a►` p '►1�" E/W Final Survey Report Easting BAKER V. Sec (usft) V) V) HUGHES Company: North America - ALASKA - BP (usft) Local Coordinate Reference: Well Z-23 (usft) Project: Prudhoe Bay (usft) TVD Reference: Z -23B @ 81.06usft (Doyon 16) 0.00 Site: PB Z Pad -55.36 MD Reference: Z -23B @ 81.06usft (Doyon 16) 5,959,360.030 Well: Z-23 0.00 North Reference: True 0.15 Wellbore: Z -23C 100.02 Survey Calculation Method: Minimum Curvature -0.08 Design: Z -23C 599,458.991 Database: EDM R5K-Alaska PROD -ANCP1 200.02 Survey Program Date 11/1/2016 259.04 200.02 118.96 -0.17 From To 5,959,359.856 599,458.698 0.10 -0.241 (usft) (usft) Survey (Wellbore) Tool Name Description 300.02 218.96 100.02 4,000.02 Z -23A Srvy 1 GYD-GC MS (Z-23PB1) GYD-GC-MS Gyrodata gyrocompassing m/s 599,458.472 0.21 4,100.02 6,700.02 Z -23A Srvy 1 GYD-GC MS (Z-23) GYD-GC-MS Gyrodata gyrocompassing m/s 229.48 400.02 6,718.00 6,748.00 Z -23B Srvy 1 Inc+Trend (Z -23B) INC+TREND Inclinometer + known azi trend 5,959,359.398 599,458.283 6,809.92 9,263.64 Z -23B Srvy 2 MWD+IFR+MS (Z -23B) MWD+IFR+MS-WOCA MWD + IFR + Multi Station W/O Crustal 0.37 218.67 9,279.00 11,865.39 BHI MWD CTK 4-1/4" (Z -23C) MWD MWD - Standard -1.15 5,959,359.011 Survey MD Inc Azi (azimuth) TVD TVDSS NIS E/W Northing Easting DLeg V. Sec (usft) V) V) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 25.70 0.00 0.00 25.70 -55.36 0.00 0.00 5,959,360.030 599,459.070 0.00 0.00 100.02 0.15 234.65 100.02 18.96 -0.06 -0.08 5,959,359.972 599,458.991 0.20 -0.04 200.02 0.22 259.04 200.02 118.96 -0.17 -0.37 5,959,359.856 599,458.698 0.10 -0.241 300.02 0.17 195.54 300.02 218.96 -0.35 -0.60 5,959,359.674 599,458.472 0.21 -0.35 400.02 0.23 229.48 400.02 318.96 -0.62 -0.80 5,959,359.398 599,458.283 0.13 0.38 500.02 0.37 218.67 500.02 418.96 -1.00 -1.15 5,959,359.011 599,457.934 0.15 -0.49 600.02 0.15 141.82 600.02 518.96 -1.36 -1.27 5,959,358.654 599,457.818 0.37 -0.42 700.02 0.41 180.59 700.01 618.95 -1.82 -1.19 5,959,358.195 599,457.901 0.31 -0.12 800.02 0.27 129.09 800.01 718.95 -2.33 -1.01 5,959,357.691 599,458.087 0.32 0.28 900.02 0.19 130.05 900.01 818.95 -2.58 -0.70 5,959,357.440 599,458.400 0.08 0.68 1,000.02 0.39 179.02 1,000.01 918.95 -3.03 -0.57 5,959,356.995 599,458.539 0.30 1.02 1,100.02 0.45 165.72 1,100.01 1,018.95 -3.75 -0.47 5,959,356.275 599,458.651 0.11 147 1,200.02 0.39 171.06 1,200.01 1,118.95 -4.47 -0.32 5,959,355.561 599,458.810 0.07 1.96 1,300.02 0.48 148.45 1,300.00 1,218.94 -5.16 -0.05 5,959,354.871 599,459.091 0.19 2.54 1,400.02 0.50 101.37 1,400.00 1,318.94 -5.60 0.60 5,959,354.437 599,459.744 0.39 3.32 1,500.02 0.73 100.25 1,499.99 1,418.93 -5.80 1.65 5,959,354.252 599,460.801 0.23 4.33 1,600.02 0.93 90.77 1,599.98 1,518.92 -5.93 3.09 5,959,354.146 599,462.241 0.24 5.64 1,700.02 1.32 83.32 1,699.96 1,618.90 -5.80 5.05 5,959,354.295 599,464.194 0.42 7.27 1,800.02 1.08 82.75 1,799.94 1,718.88 -5.55 7.13 5,959,354.576 599,466.270 0.24 8.95 11/1/2016 1:23:32PM Page 3 COMPASS 5000.1 Build SIB .%"0�BP FSa2 by Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Local Coordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z -23B @ 81.06usft (Doyon 16) Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C Database: EDM RSK- Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS NIS ENV Northing Easting DLeg V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 1,900.02 1.11 81.55 1,899.92 1,818.86 -5.29 9.02 5,959,354.862 599,468.159 0.04 10.46 2,000.02 1.17 88.42 1,999.90 1,918.84 -5.12 11.00 5,959,355.059 599,470.135 0.15 12.08 2,100.02 1.14 81.85 2,099.88 2,018.82 -4.95 13.00 5,959,355.254 599,472.137 0.14 13.74 2,200.02 1.08 86.49 2,199.87 2,118.81 -4.75 14.93 5,959,355.478 599,474.060 0.11 15.30 2,300.02 0.93 93.20 2,299.85 2,218.79 -4.74 16.68 5,959,355.514 599,475.810 0.19 16.81 2,400.02 0.74 118.35 2,399.84 2,318.78 -5.09 18.06 5,959,355.180 599,477.193 0.41 18.18 2,500.02 0.77 108.48 2,499.83 2,418.77 -5.61 19.26 5,959,354.677 599,478.406 0.13 19.49 2,600.02 0.76 139.30 2,599.82 2,518.76 -6.32 20.33 5,959,353.975 599,479.485 0.41 20.77 2,646.32 0.68 136.60 2,646.12 2,565.06 -6.76 20.72 5,959,353.547 599,479.881 0.18 21.33 13 318" 2,700.02 0.60 132.62 2,699.82 2,618.76 -7.18 21.15 5,959,353.129 599,480.314 0.18 21.91 2,800.02 0.51 170.47 2,799.81 2,718.75 -7.98 21.61 5,959,352.342 599,480.783 0.37 22.70 2,900.02 0.52 170.41 2,899.81 2,818.75 -8.86 21.76 5,959,351.457 599,480.944 0.01 23.28 3,000.02 0.33 192.45 2,999.80 2,918.74 -9.59 21.77 5,959,350.729 599,480.967 0.25 23.65 3,100.02 0.60 195.69 3,099.80 3,018.74 -10.38 21.57 5,959,349.941 599,480.774 0.27 23.87 3,200.02 0.19 208.80 3,199.80 3,118.74 -11.03 21.35 5,959,349.289 599,480.561 0.42 24.00 3,300.02 0.20 217.65 3,299.80 3,218.74 -11.31 21.16 5,959,349.003 599,480.378 0.03 23.981 3,400.02 0.37 137.91 3,399.80 3,318.74 -11.69 21.27 5,959,348.627 599,480.493 0.39 24.271 3,500.02 0.37 135.80 3,499.79 3,418.73 -12.16 21.71 5,959,348.162 599,480.941 0.01 24.88 3,600.02 1.74 337.73 3,599.78 3,518.72 -10.98 21.36 5,959,349.331 599,480.575 2.09 23.991 3,700.02 4.12 326.92 3,699.64 3,618.58 -6.57 18.83 5,959,353.712 599,477.981 2.43 19.59 3,800.02 4.68 325.94 3,799.35 3,718.29 -0.18 14.58 5,959,360.044 599,473.651 0.57 12.72 3,900.02 3.88 328.20 3,899.07 3,818.01 6.08 10.51 5,959,366.245 599,469.502 0.82 6.07 4,000.02 2.26 325.90 3,998.92 3,917.86 10.59 7.63 5,959,370.714 599,466.554 1.62 1.31 4,100.02 1.69 319.00 4,098.86 4,017.80 13.33 5.55 5,959,373.432 599,464.445 0.62 -1.86 4,200.02 1.55 288.59 4,198.82 4,117.76 14.87 3.30 5,959,374.946 599,462.176 0.86 -4.58 4,300.02 2.15 268.22 4,298.77 4,217.71 15.25 0.15 5,959,375.277 599,459.014 0.88 -7.50 11/1/2016 1:23:32PM Page 4 COMPASS 5000.1 Build 81B hh BP Feas yam. by Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Local Coordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z -23B @ 81.06usft (Doyon 16) Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C Database: EDM RSK- Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS NIS ENV Northing Easting DLeg V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 4,400.02 2.02 255.22 4,398.71 4,317.65 14.74 -3.43 5,959,374.722 599,455.443 0.49 -10.34 4,500.02 1.62 262.96 4,498.66 4,417.60 14.12 -6.54 5,959,374.058 599,452.345 0.47 -12.72 4,600.02 1.35 271.58 4,598.62 4,517.56 13.98 -9.12 5,959,373.883 599,449.766 0.35 -14.89 4,700.02 1.07 257.81 4,698.60 4,617.54 13.81 -11.21 5,959,373.691 599,447.679 0.40 -16.61 4,800.02 0.93 241.19 4,798.59 4,717.53 13.22 -12.83 5,959,373.081 599,446.063 0.32 -17.73 4,900.02 0.80 231.62 4,898.57 4,817.51 12.40 -14.09 5,959,372.240 599,444.816 0.19 -18.40 5,000.02 0.86 244.05 4,998.56 4,917.50 11.64 -15.31 5,959,371.462 599,443.604 0.19 -19.08 5,100.02 0.76 250.22 5,098.55 5,017.49 11.08 -16.61 5,959,370.892 599,442.313 0.13 -19.93 5,200.02 0.58 247.76 5,198.55 5,117.49 10.67 -17.71 5,959,370.462 599,441.226 0.18 -20.67 5,300.02 0.67 249.45 5,298.54 5,217.48 10.27 -18.72 5,959,370.052 599,440.215 0.09 -21.35 5,400.02 0.75 248.17 5,398.53 5,317.47 9.82 -19.88 5,959,369.588 599,439.067 0.08 -2213 5,500.02 0.96 225.79 5,498.52 5,417.46 9.00 -21.08 5,959,368.744 599,437.870 0.39 -22.76 5,600.02 0.78 229.82 5,598.51 5,517.45 7.97 -22.21 5,959,367.707 599,436.763 0.19 -23.22 5,700.02 0.86 242.20 5,698.50 5,617.44 7.18 -23.39 5,959,366.902 599,435.590 0.19 -23.85 5,800.02 0.72 250.51 5,798.49 5,717.43 6.62 -24.65 5,959,366.326 599,434.341 0.18 -24.66 5,900.02 2.85 9.02 5,898.45 5,817.39 8.87 -24.85 5,959,368.569 599,434.109 3.26 -25.95 6,000.02 5.24 19.05 5,998.20 5,917.14 15.64 -22.97 5,959,375.365 599,435.900 2.48 -27.71 6,100.02 7.44 22.77 6,097.58 6,016.52 25.93 -18.97 5,959,385.704 599,439.759 2.24 -29.39 6,200.02 9.42 19.55 6,196.50 6,115.44 39.61 -13.73 5,959,399.454 599,444.822 2.03 -31.69 6,300.02 11.21 19.93 6,294.88 6,213.82 56.46 -7.67 5,959,416.382 599,450.650 1.79 -34.88 6,400.02 12.93 21.54 6,392.66 6,311.60 76.01 -0.25 5,959,436.023 599,457.812 1.75 -38.22 6,500.02 14.70 25.35 6,489.77 6,408.71 97.89 9.29 5,959,458.021 599,467.062 1.99 -40.9011 6,600.02 16.19 26.97 6,586.15 6,505.09 121.78 21.04 5,959,482.065 599,478.499 1.55 -42.66 6,700.02 18.08 28.71 6,681.71 6,600.65 147.81 34.82 5,959,508.279 599,491.930 1.96 -43.75 6,718.00 18.74 28.80 6,698.77 6,617.71 152.79 37.55 5,959,513.293 599,494.596 3.67 -43.871 95/81, 6,734.00 20.10 24.71 6,713.86 6,632.80 157.54 39.94 5,959,518.074 599,496.920 12.02 -44.181 11/1/2016 1:23:32PM Page 5 COMPASS 5000.1 Build BIB BP ri�� ..,,.s by Final Surrey Report Has HUGHES Company: North America - ALASKA- BP Project: Prudhoe Bay Site: PB Z Pad Well: Z-23 Wellbore: Z -23C Design: Z -23C Survey MD (usft) 6,748.00 6,809.92 6,905.74 7,001.11 7,095.11 7,185.50 7,280.04 7,373.61 7,466.08 7,561.90 7,653.80 7,749.78 7,840.56 7,933.11 8,029.57 8,126.87 8,224.65 8,320.16 8,405.39 8,502.06 8,596.05 8,690.49 8,784.16 8,849.33 8,913.00 DRILLING LINER 1 8,923.61 Inc 20.10 22.39 25.03 24.90 25.06 23.33 22.07 21.59 21.10 22.96 22.75 22.55 23.78 23.78 22.52 22.31 21.93 21.26 20.98 21.96 22.96 26.63 30.86 33.97 34.74 34.87 Azi (azimuth) 24.71 14.05 12.80 2.42 352.30 347.62 344.11 344.05 344.68 345.89 345.60 345.65 342.19 342.55 341.35 341.28 341.08 340.91 342.97 344.82 344.95 345.46 344.79 343.37 343.95 344.05 Local Coordinate Reference: Well Z-23 TVD Reference: Z -23B @ 81.06usft (Doyon 16) MD Reference: Z -23B @ 81.06usft (Doyon 16) North Reference: True Survey Calculation Method: Minimum Curvature Database: EDM R5K - Alaska PROD - ANCP1 TVD TVDSS NIS E/W Northing Easting DLeg (usft) (usft) (usft) (usft) (usft) (usft) (olloousft) 6,727.01 6,645.95 161.91 41.95 5,959,522.470 599,498.873 0.00 6,784.74 6,703.68 183.03 49.27 5,959,543.680 599,505.907 7.24 6,872.46 6,791.40 220.51 58.19 5,959,581.268 599,514.332 2.80 6,956.96 6,877.90 260.26 63.51 5,959,621.084 599,519.125 4.59 7,044.21 6,963.15 299.78 61.68 5,959,660.570 599,516.770 4.54 7,126.66 7,045.60 336.24 55.27 5,959,696.938 599,509.885 2.86 7,213.88 7,132.82 371.61 46.40 5,959,732.185 599,500.542 1.96 7,300.74 7,219.68 405.07 36.85 5,959,765.512 599,490.557 0.51 7,386.87 7,305.81 437.48 27.78 5,959,797.798 599,481.057 0.59 7,475.69 7,394.63 472.24 18.67 5,959,832.434 599,471.484 2.00 7,560.38 7,479.32 506.84 9.88 5,959,866.906 599,462.239 0.26 7,648.95 7,567.89 542.64 0.70 5,959,902.583 599,452.591 0.21 7,732.42 7,651.36 576.93 -9.21 5,959,936.738 599,442.225 2.02 7,817.11 7,736.05 612.50 -20.51 5,959,972.148 599,430.454 0.16 7,905.80 7,824.74 648.55 -32.25 5,960,008.043 599,418.240 1.39 7,995.75 7,914.69 683.70 -44.14 5,960,043.025 599,405.891 0.22 8,086.33 8,005.27 718.55 -56.02 5,960,077.712 599,393.554 0.40 8,175.14 8,094.08 751.79 -67.46 5,960,110.791 599,381.670 0.70 8,254.64 8,173.58 780.98 -76.99 5,960,139.851 599,371.763 0.93 8,344.61 8,263.55 814.97 -86.79 5,960,173.709 599,361.513 1.23 8,431.47 8,350.41 849.64 -96.15 5,960,208.244 599,351.694 1.07 8,517.18 8,436.12 887.93 -106.25 5,960,246.392 599,341.089 3.89 8,599.29 8,518.23 931.45 -117.83 5,960,289.754 599,328.936 4.53 8,654.30 8,573.24 965.03 -127.43 5,960,323.204 599,318.895 4.91 8,706.87 8,625.81 999.51 -137.53 5,960,357.544 599,308.335 1.32 8,715.58 8,634.52 - 1,005.33 -139.20 5,960,363.342 599,306.590 1.32 V. Sec (usft) ' -44.62 -48.85 -59.86 -75.13 -96.47 -120.25 -145.62 -170.62 -194.68 -219.95 -244.86 -270.71 -296.44 -324.01 -352.21 -380.08 -407.79 -434.32 -457.16 -482.65 -508.09 -535.98 -567.77 -592.87 -618.86 -623.22 11/1/2016 1:23.32PM Page 6 COMPASS 5000.1 Build 81B 2+�►+tiSBP riFag 100#e _by Final Survey Report BAKER '��' HUGHES Company: North America - ALASKA - BP Local Coordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z -23B @ 81.06usft (Doyon 16) Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C Database: EDM R5K-Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS NIS EIW Northing Easting DLeg V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) 8,954.57 39.13 344.30 8,740.30 8,659.24 1,023.25 -144.28 5,960,381.194 599,301.275 13.77 -636.58 8,985.11 43.40 344.54 8,763.25 8,682.19 1,042.65 -149.69 5,960,400.518 599,295.613 13.99 -650.96 9,017.29 47.60 346.11 8,785.80 8,704.74 1,064.85 -155.49 5,960,422.637 599,289.518 13.51 -667.081 9,047.03 48.27 345.35 8,805.72 8,724.66 1,086.25 -160.93 5,960,443.958 599,283.793 2.95 682.491 9,078.35 49.18 342.64 8,826.39 8,745.33 1,108.87 -167.42 5,960,466.489 599,277.002 7.12 -699.431 9,110.77 53.62 339.92 8,846.61 8,765.55 1,132.85 -175.57 5,960,490.358 599,268.540 15.18 -718.47 9,141.88 58.29 338.69 8,864.02 8,782.96 1,156.96 -184.68 5,960,514.337 599,259.109 15.36 -738.42 9,172.00 62.41 333.74 8,878.93 8,797.87 1,180.88 -195.25 5,960,538.120 599,248.223 19.77 -759.54 9,205.78 66.53 331.48 8,893.48 8,812.42 1,207.93 -209.28 5,960,564.981 599,233.840 13.61 -785.21 9,235.75 70.17 330.51 8,904.54 8,823.48 1,232.29 -222.79 5,960,589.154 599,220.013 12.51 -809.09 9,263.64 73.99 328.98 8,913.12 8,832.06 1,255.21 -236.16 5,960,611.889 599,206.341 14.66 -832.12 T►P 9,279.00 76.57 328.44 8,917.02 8,835.96 1,267.90 -243.88 5,960,624.478 599,198.459 17.14 -845.15 KOPITop of Whipstock 9,300.01 80.09 323.24 8,921.27 8,840.21 1,284.91 -255.43 5,960,641.336 599,186.684 29.46 -863.66 Interpolated Azimuth 9,330.47 86.56 315.82 8,924.82 8,843.76 1,307.89 -275.05 5,960,664.050 599,166.762 32.19 -892.14 Interpolated Azimuth 9,360.24 86.37 308.68 8,926.66 8,845.60 1,327.86 -297.03 5,960,683.721 599,144.521 23.95 -921.16 Interpolated Azimuth 9,390.89 86.96 301.41 8,928.44 8,847.38 1,345.41 -322.06 5,960,700.945 599,119.259 23.76 951.621 9,421.10 83.75 291.53 8,930.89 8,849.83 1,358.82 -348.98 5,960,713.994 599,092.172 34.28 981.63 9,448.67 80.96 280.40 8,934.57 8,853.51 1,366.33 -375.20 5,960,721.157 599,065.854 41.27 -1,008.10 9,480.31 83.28 269.63 8,938.92 8,857.86 1,369.06 -406.37 5,960,723.471 599,034.652 34.50 -1,036.46 9,510.47 83.60 256.75 8,942.38 8,861.32 1,365.51 -436.06 5,960,719.532 599,005.017 42.44 -1,060.40 9,540.49 83.13 245.31 8,945.86 8,864.80 1,355.84 -464.21 5,960,709.486 598,976.998 37.88 -1,079.94 9,570.63 84.55 234.18 8,949.11 8,868.05 1,340.76 -490.05 5,960,694.070 598,951.362 37.01 -1,094.78 9,606.75 82.79 218.52 8,953.11 8,872.05 1,316.07 -515.95 5,960,669.037 598,925.796 43.36 -1,104.86 11/1/2016 1:23:32PM Page 7 COMPASS 5000.1 Build 81B 2 sbpBPVeA 100wFinal Inc Survey Report Azi (azimuth) •• TVD TVDSS NIS BAKER E/W Northing Easting HUGHES Company: North America - ALASKA - BP Local Coordinate Reference: Well Z-23 Project: Site: Prudhoe Bay PB Z Pad TVD Reference: Z-23B @ 81.06usft (Doyon 16) (usft) Well: Z-23 MD Reference: Z-23B @ 81.06usft (Doyon 16) (usft) Wellbore: Z-23C North Reference: True 9,637.44 84.38 Survey Calculation Method: Minimum Curvature 8,956.55 Design: Z-23C Database: EDM R5K- Alaska PROD -ANCP1 -532.92 Survey MD Inc Azi (azimuth) TVD TVDSS NIS E/W Northing Easting DLeg V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) 1 9,637.44 84.38 209.23 8,956.55 8,875.49 1,290.77 -532.92 5,960,643.523 598,909.157 30.52 -1,106.91 9,667.19 85.14 205.02 8,959.27 8,878.21 1,264.41 -546.43 5,960,616.988 598,896.005 14.32 1,105.43 9,697.41 83.79 202.57 8,962.18 8,881.12 1,236.89 -558.56 5,960,589.313 598,884.236 9.22 -1,102.18 9,727.37 82.78 197.38 8,965.69 8,884.63 1,208.94 -568.73 5,960,561.230 598,874.446 17.53 -1,097.00 9,757.97 83.81 192.60 8,969.26 8,888.20 1,179.59 -576.58 5,960,531.783 598,866.979 15.87 -1,089.13 9,790.51 84.77 189.26 8,972.50 8,891.44 1,147.81 -582.72 5,960,499.921 598,861.263 10.63 -1,078.55 9,817.41 86.92 186.62 8,974.45 8,893.39 1,121.24 -586.42 5,960,473.308 598,857.910 12.64 -1,068.48 9,850.61 87.64 182.62 8,976.03 8,894.97 1,088.19 -589.10 5,960,440.231 598,855.678 12.23 -1,054.27 9,884.90 85.82 175.92 8,977.98 8,896.92 1,053.98 -588.66 5,960,406.032 598,856.565 20.22 1,036.78 9,916.13 87.94 172.46 8,979.69 8,898.63 1,022.96 -585.50 5,960,375.063 598,860.131 12.98 -1,018.54 9,940.23 87.91 169.30 8,980.56 8,899.50 999.19 -581.69 5,960,351.341 598,864.262 13.10 -1,003.35 9,970.39 88.99 165.85 8,981.37 8,900.31 969.75 -575.20 5,960,321.994 598,871.137 11.98 -983.01 9,998.33 87.73 161.86 8,982.17 8,901.11 942.93 -567.44 5,960,295.280 598,879.254 14.97 -962.88 10,030.30 87.63 157.84 8,983.47 8,902.41 912.94 -556.44 5,960,265.449 598,890.651 12.57 -938.36 10,060.35 87.69 155.41 8,984.70 8,903.64 885.38 -544.52 5,960,238.052 598,902.925 8.08 -914.261 10,092.43 86.37 151.15 8,986.36 8,905.30 856.78 -530.12 5,960,209.639 598,917.702 13.88 -887.49 10,121.32 86.50 147.37 8,988.16 8,907.10 832.00 -515.39 5,960,185.060 598,932.763 13.07 -862.34 10,149.57 87.70 143.19 8,989.59 8,908.53 808.81 -499.32 5,960,162.093 598,949.133 15.38 -836.83 10,180.01 89.11 140.16 8,990.43 8,909.37 784.95 -480.45 5,960,138.479 598,968.312 10.98 -808.56 10,214.26 89.32 137.48 8,990.90 8,909.84 759.17 -457.91 5,960,113.009 598,991.196 7.85 -776.15 1 10,240.81 88.68 134.57 8,991.37 8,910.31 740.07 -439.48 5,960,094.154 599,009.876 11.22 -750.63 10,269.97 90.37 131.15 8,991.61 8,910.55 720.24 418.11 5,960,074.610 599,031.504 13.08 -722.21 10,300.97 88.59 128.15 8,991.89 8,910.83 700.46 -394.24 5,960,055.152 599,055.626 11.25 691.66 10,329.57 91.60 126.01 8,991.84 8,910.78 683.22 -371.43 5,960,038.217 599,078.663 12.91 -663.28 10,360.99 91.75 122.83 8,990.92 8,909.86 665.47 -345.53 5,960,020.812 599,104.798 10.13 -631.97 10,395.40 92.09 120.07 8,989.77 8,908.71 647.53 -316.19 5,960,003.262 599,134.366 8.08 -597.59 10,421.35 92.58 - 117.79 8,988.71 8,907.65 634.99 -293.50 5,959,991.022 599,157.219 8.98 -571.67 11/1/2016 1:23:32PM Page 8 COMPASS 5000.1 Build 81B by BP riles �0 Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Project: Prudhoe Bay Local Coordinate Reference: Well Z-23 Site: Z Pad ND Reference: Z-238 81.06usft (Doyon 16) @ ( Y Z- Well: Z-23 MD Reference: Z -23B @ 81.06usft (Doyon 16) Wellbore: Z -23C North Reference: True Design: Z -23C Survey Calculation Method: Minimum Curvature Database: EDM R5K-Alaska PROD -ANCP1 Survey MD Inc (usft) (°) Azi (azimuth) TVD TVDSS N/S E/W Northing Easting DLeg V. Sec (°) (usft) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) 10,450.53 93.28 115.54 8,987.22 8,906.16 621.91 -267.46 5,959,978.292 599,183.428 8.07 -542.58 10,479.88 92.76 111.16 8,985.67 8,904.61 610.30 -240.56 5,959,967.036 599,210.479 15.01 -513.48 10,515.49 93.69 111.83 8,983.67 8,902.61 597.27 -207.48 5,959,954.449 599,243.726 3.22 -478.32 10,541.53 93.17 114.93 8,982.11 8,901.05 586.96 -183.62 5,959,944.453 599,267.714 12.05 -452.50 10,580.06 94.30 120.01 8,979.60 8,898.54 569.23 -149.52 5,959,927.179 599,302.045 13.48 -414.10 10,610.75 95.04 125.00 8,977.10 8,896.04 552.80 -123.73 5,959,911.092 599,328.046 16.38 -383.55 10,640.39 93.75 128.48 8,974.83 8,893.77 535.12 -100.05 5,959,893.733 599,351.953 12.49 -354.21 10,669.73 93.68 133.19 8,972.93 8,891.87 515.98 -77.91 5,959,874.890 599,374.348 16.02 -325.46 10,700.75 90.21 135.83 8,971.87 8,890.81 494.25 -55.80 5,959,853.458 599,396.735 14.05 -295.45 10,730.21 88.40 140.37 8,972.23 8,891.17 472.33 -36.14 5,959,831.803 599,416.688 16.59 -267.46 10,759.99 88.74 139.47 8,972.97 8,891.91 449.56 -16.97 5,959,809.282 599,436.154 3.23 -239.47 10,790.07 90.92 137.00 8,973.06 8,892.00 427.12 3.06 5,959,787.118 599,456.480 10.95 -210.91 10,815.35 90.86 134.64 8,972.67 8,891.61 409.00 20.68 5,959,769.228 599,474.332 9.34 -186.59 10,846.91 90.46 132.03 8,972.31 8,891.25 387.34 43.63 5,959,747.880 599,497.566 8.37 -155.89 10,876.57 89.51 128.01 8,972.31 8,891.25 368.27 66.34 5,959,729.116 599,520.524 13.93 -126.69 10,905.78 91.08 125.48 8,972.16 8,891.10 350.80 89.74 5,959,711.955 599,544.154 10.19 -97.68 10,936.97 90.64 122.36 8,971.70 8,890.64 333.40 115.62 5,959,694.900 599,570.256 10.10 -66.571 10,966.62 92.21 120.33 8,970.96 8,889.90 317.98 140.93 5,959,679.820 599,595.768 8.65 -36.94 10,995.40 93.38 119.16 8,969.56 8,888.50 303.72 165.89 5,959,665.891 599,620.909 5,75 -8.20 11,025.11 93.60 116.10 8,967.75 8,886.69 289.97 192.16 5,959,652.490 599,647.357 10.31 21.43 11,055.99 95.29 112.24 8,965.35 8,884.29 277.36 220.24 5,959,640.260 599,675.600 13.61 52.051 11,085.85 93.17 109.83 8,963.15 8,882.09 266.68 248.03 5,959,629.943 599,703.527 10.73 81.46 11,115.92 92.40 106.09 8,961.69 8,880.63 257.42 276.60 5,959,621.064 599,732.210 12.68 110.83 11,145.77 93.44 101.21 8,960.17 8,879.11 250.39 305.56 5,959,614.415 599,761.258 16.69 139.43 11,175.73 93.23 97.34 8,958.42 8,877.36 245.57 335.07 5,959,609.987 599,790.829 12.91 167.39 11,212.70 11,256.11 93.87 91.60 92.41 86.45 8,956.13 8,875.07 242.43 371.82 5,959,607.338 599,827.618 13.42 200.791 8,954.06 8,873.00 242.86 415.16 5,959,608.345 599,870.941 14.68 238.11 11/1/2016 1:23:32PM Page 9 COMPASS 5000.1 Build 818 s by Company: North America - ALASKA - BP Project: Prudhoe Bay Site: PB Z Pad Well: Z-23 Wellbore: Z -23C Design: Z -23C Survey MD Inc (usft) V) 11,280.61 91.94 11,310.35 92.09 11,340.33 90.89 11,372.01 90.31 11,402.73 89.97 11,431.51 89.32 11,460.51 88.10 11,491.21 87.94 11,520.85 86.77 11,551.91 88.68 11,580.69 88.13 11,610.53 88.44 11,638.17 85.39 11, 670.81 85.20 11, 700.91 84.80 11,730.35 85.91 11,766.97 85.42 11,796.17 83.14 11,823.83 85.20 11,847.63 85.24 11,865.39 84.68 11,927.00 84.68 Projection to TD - 2-718" BP Final Survey Report Local Coordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Database: Well Z-23 Z -23B @ 81.06usft (Doyon 16) Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature EDM R5K - Alaska PROD - ANCP1 rias BAKER HUGHES Azi (azimuth) TVD TVDSS NIS EIW Northing Easting DLeg V. Sec V) (usft) (usft) (usft) (usft) (usft) (usft) ('1100usft) (usft) 82.89 8,953.30 8,872.24 245.14 439.54 5,959,610.941 599,895.285 14.59 258.08 77.31 8,952.26 8,871.20 250.25 468.80 5,959,616.436 599,924.480 18.76 280.87 71.92 8,951.48 8,870.42 258.19 497.69 5,959,624.765 599,953.254 18.41 301.91 66.83 8,951.14 8,870.08 269.35 527.33 5,959,636.310 599,982.739 16.17 322.00 64.02 8,951.07 8,870.01 282.12 555.26 5,959,649.452 600,010.500 9.21 339.81 67.50 8,951.25 8,870.19 293.94 581.50 5,959,661.611 600,036.576 12.30 356.62 72.38 8,951.90 8,870.84 303.88 608.72 5,959,671.912 600,063.665 17.34 375.23 77.53 8,952.96 8,871.90 311.84 638.34 5,959,680.264 600,093.174 16.77 396.90 81.83 8,954.33 8,873.27 317.14 667.47 5,959,685.952 600,122.221 15.02 419.471 86.28 8,955.56 8,874.50 320.36 698.33 5,959,689.572 600,153.033 15.58 444.59 90.30 8,956.36 8,875.30 321.22 727.08 5,959,690.811 600,181.766 14.09 469.06 94.55 8,957.26 8,876.20 319.95 756.87 5,959,689.944 600,211.571 14.27 495.49 97.65 8,958.75 8,877.69 317.02 784.31 5,959,687.376 600,239.042 15.72 520.72 103.77 8,961.43 8,880.37 310.98 816.25 5,959,681.758 600,271.064 18.70 551.41 107.02 8,964.05 8,882.99 303.02 845.16 5,959,674.183 600,300.070 10.84 580.42 113.70 8,966.44 8,885.38 292.82 872.65 5,959,664.344 600,327.693 22.93 609.33 119.27 8,969.21 8,888.15 276.54 905.32 5,959,648.502 600,360.573 15.23 645.76 124.59 8,972.12 8,891.06 261.18 929.97 5,959,633.473 600,385.421 19.74 674.79 127.49 8,974.93 8,893.87 244.99 952.22 5,959,617.583 600,407.878 12.82 702.151 130.32 8,976.91 8,895.85 230.10 970.67 5,959,602.936 600,426.526 11.85 725.58 129.10 8,978.47 8,897.41 218.80 984.28 5,959,591.815 600,440.283 7.53 743.01 129.10 8,984.19 8,903.13 180.11 1,031.89 5,959,553.763 600,488.393 0.00 803.591 11/1/2016 1:23:32PM Page 10 COMPASS 5000.1 Build 81B BP Final Survey Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Database: Casing Hole Diameter Diameter Name (in) (in) 2.875 4.250 Company: North America - ALASKA- BP Project: Prudhoe Bay Site: PB Z Pad Well: Z-23 Wellbore: Z -23C Design: Z -23C Casing Points 1,255.21 -236.16 Measured Vertical 9,279.00 Depth Depth 1,267.90 (usft) (usft) KOP/Top of Whipstock 11, 927.00 2-7/8" BP Final Survey Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Database: Casing Hole Diameter Diameter Name (in) (in) 2.875 4.250 Well Z-23 Z -23B @ 81.06usft (Doyon 16) Z-238 @ 81.06usft (Doyon 16) True Minimum Curvature EDM R5K-Alaska PROD -ANCPi EPA .9 BAKER HUGHES Design Annotations Measured Vertical Local Coordinates Depth Depth +NI -S +E/ -W (usft) (usft) (usft) (usft) Comment 9,263.64 8,913.12 1,255.21 -236.16 TIP 9,279.00 8,917.02 1,267.90 -243.88 KOP/Top of Whipstock 9,300.01 8,921.27 1,284.91 -255.43 Interpolated Azimuth 9,330.47 8,924.82 1,307.89 -275.05 Interpolated Azimuth 9,360.24 8,926.66 1,327.86 -297.03 Interpolated Azimuth 11,927.00 8,984.19 180.11 1,031.89 Projection to TD Prepared By: Yosha Ragbirsingh Survey Manager Baker Hughes 11/1/2016 1:23:32PM Page 11 COMPASS 5000.1 Build 81B Pro ct: PrudhmB Tn1N01tl` WELLBORE DETAILS: Z -23C REFERENCE X ay rn.o,.ec ruenn:le.oe i Site: PBZPad Coamnah r'.. Weg: Z-23 Mop�b Z -23C (NIE)Rehrence: Well Z-23, True Nc Seerytli5)5509vi VeNcaIIND)Reference'. Z-23B@p1.06usfllDoyou16) BAKER We6bore: Z -23C oyMph: eoa 5ecfpn (VB)Rehrerce: Sbt(0.00N, 0.00E) Design: Z•23C �Z-23IZ•23C) ome: wlrzol Parent Wellbore: Z -23B Measured Depth Reference: Z-23B@81,06usfllDoyon 16) HUGHES MvOd B('i3.401 Tie on MD: 9263.64 CakuhOon M.p Mnimum Curvaure e Easfing (85 usft/in) N N N N N N N N N N N N N N N N N N N N N U N N N N O) 0m N m 0) N O) N m 0) O O O O O O O O O O O N 10 U) O r0 r0 fD r0 O N O r0 UJ O O O O O O O O O O O O O V m m m N m N m N N m N m U) tp O r0 r0 0 �O O , NV A� W0 0 b O 0 0 O O O W- �--OOo OO O N O N O N O O WA N N N m O OO O) ONN OA NN O N0 NN ON W J% - , N Z -j1 5960660 Z�1r�L16i1 Z11 26IZ Z1O 596066019/ 1Z 136 23 Z Z -61L 1022 02OO\ZZb9/Z- 9 5960795 Z- a17.(4t � 23 5960795 1Z 5960710 5960710 196.25 �I o ..'5 ✓ �� -'—rte I_. �L_ __.. b 7f� 5960625 „� Z - 16/Z 118 5960540 f I,. _ i - - /14fi 5960540 4) i. LI 4 j - , j 5960455 - - - - -�. Z a q{ _ � - _ _.. ,. / i ' f 5960455 � 000 C' p Z-1001 -? 5960370 — - " -`� \ ' r- - _. --t _11$[Z T 5AF�B� Z-11Z-15APE31 5960370 6 5960285 Z-1 5/Z-1 SA 5960285 S5%0200 -- -- - ' --� ..'. -- �Q 6 � -t --b=, - - � - 5960200 � 5960115 n Kz'j - I_ _ 6 (2 30)I v6/Pan Z 106 w 1 1 I -- � � u v5960115 ao � 0 - — -- - B Y ... - i C i - - -�2-210 5960030= 5959945 ss6003o, �., _\ iii --- -�-y� , l -- --- i -o:'' -�- - 9999949 Z 21D/Z-210P1B1 5959860 C Z 5969860 t f�2,w C L, O T 5959775 - I - 5859775 5959690 - q _ Z -- - 4 40 5959690 5959605 I I '5959605 5959520�� 6959520 r 5A� o 5959435 w _ Z-2 /Z-2 C— Z`201Z-20�- 0 5959350 Z 05! .._ ! _- . - _ ._I.' I ��, / '�1�/7- 1$ PB� ssssa35 �- T _ sba 4 .x5959350 5959265 2 P B8 ..-_ . ..5959265 23/Z23AL1X reports do not elet9- Q , 5959095 59l 7 IE ff 03ZZ-59180 Z, 3 59590ZJBrL 0 um00 0 0 0w00 O0o0000w m m m mm m o 0 O A A om o O ON W A N 0 OO N O O N N WO NmNz-z3e stosNst(Doyon1s) OO O O N O Vi O I Easting (85 usft/in) AOc`MC OFFE3E r DEPORT North America - ALASKA - BP Prudhoe Bay PB Z Pad Z-23 Z -23C Z -23C AOGCC Post Drilling Offset Report 01 November, 2016 BAKER HUGHES /BOO GCC OFFSET REPORT .0*0 BP F/. FAa Z p Anticollision Report BAKER HUGHES Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00usft Reference Well: Z-23 Well Error: 0.00usft Reference Wellbore Z -23C Reference Design: Z -23C Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Z -23B @ 81.06usft (Doyon 16) Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Reference Z -23C Filter type: NO GLOBAL FILTER: Using user defined selection & filtering criteria Interpolation Method: MD Interval 25.00usft Error Model: ISCWSA Depth Range: Unlimited Scan Method: Tray. Cylinder North Results Limited by: Maximum center -center distance of 500.00usft Error Surface: Elliptical Conic AAOOZGTC�OOFFSET REPORT Survey Program Date 11/1/2016 From To (usft) (usft) Survey (Wellbore) Tool Name Description 100.02 4,000.02 Z -23A Srvy 1 GYD-GC MS (Z-23PB1) GYD-GC-MS Gyrodata gyrocompassing m/s 4,100.02 6,700.02 Z -23A Srvy 1 GYD-GC MS (Z-23) GYD-GC-MS Gyrodata gyrocompassing m/s 6,718.00 6,748.00 Z -23B Srvy 1 Inc+Trend (Z -23B) INC+TREND Inclinometer+ known azi trend 6,809.92 9,263.64 Z -23B Srvy 2 MWD+IFR+MS (Z -23B) MWD+IFR+MS-WOCA MWD + IFR + Multi Station W/O Crustal 9,279.00 11,865.39 BHI MWD CTK4-1/4" (Z -23C) MWD MWD - Standard 11/1/2016 1.31:10PM Page 2 of 6 COMPASS 5000.1 Build 81B AAOOZGTC�OOFFSET REPORT BP Fel Z� p Anticollision Report BAKER HUGHES Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay ND Reference: Z -23B @ 81.06usft (Doyon 16) Reference Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Site Error: O.00usft North Reference: True Reference Well: Z-23 Survey Calculation Method: Minimum Curvature Well Error: O.00usft Output errors are at 1.00 sigma Reference Wellbore Z -23C Database: EDM R5K - Alaska PROD - ANCP1 Reference Design: Z -23C Offset ND Reference: Offset Datum Summary Reference offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Offset Well - Wellbore - Design (usft) (usft) (usft) (usft) PB Z Pad Plan Kup Z-105 (SD) v6.2 - Plan Z-105 - Plan #7 Z 729.70 750.00 492.53 12.04 480.49 Pass - Major Risk Plan Kup Z-105 (SD) v6.2 - Plan Z-105PB1 - Plan 729.70 750.00 492.53 12.04 480.49 Pass - Major Risk Plan Kup Z-106 (27+30) v6 - Plan Z-106 - Plan #4 2,000.46 2,075.00 98.42 30.10 68.36 Pass - Major Risk Plan Kup Z-111 (29.5) v6 - Plan Z-111 - Plan #10 Z 696.49 700.00 399.16 12.31 386.87 Pass - Major Risk Plan Sch Z-203 (NB) v6.2 - Plan Z-203 - Plan #5 Z 1,015.93 1,050.00 402.33 17.81 384.51 Pass - Major Risk Z-01 - Z-01 - Z-01 2,714.63 2,725.00 364.20 39.75 324.45 Pass - Major Risk Z-01 - Z-01 A - Z-01 A 2,714.63 2,725.00 364.20 39.75 324.45 Pass - Major Risk Z-01 - Z-01APB1 - Z-01APB1 2,714.63 2,725.00 364.20 39.75 324.45 Pass - Major Risk Z-01 - Z-01AP62 - Z-01APB2 2,714.63 2,725.00 364.20 39.75 324.45 Pass - Major Risk Z-01 - Z-01 B - Z-01 B 2,714.63 2,725.00 364.20 39.75 324.45 Pass - Major Risk Z-02 - Z-02 - Z-02 2,791.04 2,800.00 386.41 41.86 344.55 Pass - Major Risk Z-02 - Z -02A - Z -02A 2,798.74 2,800.00 386.53 42.00 344.54 Pass - Major Risk Z-03 - Z-03 - Z-03 723.45 725.00 396.48 11.29 385.20 Pass - Major Risk Z-03 - Z -03A - Z -03A 723.45 725.00 396.48 11.29 385.20 Pass - Major Risk Z-04 - Z-04 - Z-04 3,288.53 3,300.00 441.21 44.02 397.19 Pass - Major Risk Z-04 - Z -04A - Z -04A 3,297.57 3,300.00 441.29 44.13 397.17 Pass - Major Risk Z-05 - Z-05 - Z-05 3,015.88 3,025.00 467.38 43.16 424.22 Pass - Major Risk Z-05 - Z -05A - Z -05A 3,015.88 3,025.00 467.38 43.08 424.31 Pass - Major Risk Z-05 - Z-05APB1 - Z-05AP61 3,015.88 3,025.00 467.38 43.16 424.22 Pass - Major Risk Z-06 - Z-06 - Z-06 1,607.11 1,625.00 488.24 22.51 465.73 Pass - Major Risk Z-06 - Z -06A - Z -06A 1,610.25 1,625.00 488.28 22.55 465.73 Pass - Major Risk Z-100 - Z-100 - Z-100 1,426.06 1,425.00 168.18 18.51 149.68 Pass - Major Risk Z-101 - Z-101 - Z-101 1,037.60 1,050.00 176.91 18.99 157.92 Pass - Major Risk Z-102 - Z-102 - Z-102 400.72 400.00 327.02 7.99 319.03 Pass - Major Risk Z-102 - Z-102PB1 - Z-102PB1 400.72 400.00 327.02 8.14 318.88 Pass - Major Risk Z-103 - Z-103 - Z-103 919.76 925.00 234.13 14.37 219.77 Pass - Major Risk Z-103 - Z-103PB1 - Z-103PB1 919.76 925.00 234.13 14.37 219.77 Pass - Major Risk Z-103 - Z-103PB2 - Z-103PB2 919.76 925.00 234.13 14.37 219.77 Pass - Major Risk Z-108 - Plan Z-1 08A v5 - Plan #2 Z-1 08A 250.12 250.00 444.73 4.57 440.15 Pass - Major Risk Z-108 - Plan Z-108APB1 v5 - Plan #2 Z-108APB1 250.12 250.00 444.73 4.57 440.15 Pass - Major Risk Z-108 - Z-108 - Z-108 250.12 250.00 444.73 4.73 440.00 Pass - Major Risk Z-108 - Z-1 08A - Z-1 08A wp06 231.39 250.00 444.45 4.30 440.15 Pass - Major Risk Z-11 - Z-11 - Z-11 2,617.03 2,625.00 269.46 38.20 231.26 Pass - Major Risk Z-11 - Z -11A- Z-1 1A 2,617.03 2,625.00 269.46 38.20 231.26 Pass - Major Risk Z-112 - Z-112 - Z-112 6,677.75 8,175.00 228.92 210.59 22.26 Pass - Major Risk Z-112 - Z-112PB1 - Z-112PB1 6,780.14 8,050.00 345.86 82.80 281.16 Pass - Major Risk Z-112 - Z-112PB2 - Z-112PB2 6,677.75 8,175.00 228.92 210.59 22.26 Pass - Major Risk Z-114 - Z-114 - Plan #21 Z-114 3,349.08 3,375.00 279.19 48.93 230.40 Pass - Major Risk Z-114 - Z-114 - Z-114 3,296.97 3,325.00 277.39 41.88 235.56 Pass - Major Risk Z-115 - Z-115 - Z-115 835.56 850.00 490.89 13.81 477.09 Pass - Major Risk Z-116 - Z-116 - Z-116 779.14 800.00 273.24 14.15 259.08 Pass - Major Risk Z-116 - Z-116PB1 - Z-116PB1 779.14 800.00 273.24 14.15 259.08 Pass - Major Risk Z-116 - Z-116PB2 - Z-116PB2 779.14 800.00 273.24 14.15 259.08 Pass - Major Risk Z-118 - Z-118 - Plan #13b Z-118 1,089.67 1,125.00 203.48 18.25 185.23 Pass - Major Risk Z-118 - Z-118 - Z-118 26.87 26.86 235.99 1.30 234.69 Pass - Major Risk Z-12 - Z-12 - Z-12 3,215.16 3,225.00 261.52 47.92 213.61 Pass - Major Risk Z-13 - Z-13 - Z-13 3,745.29 3,800.00 149.32 50.19 99.13 Pass - Major Risk Z-13 - Z -13A- Z-1 3A 3,730.48 3,775.00 149.20 50.02 99.18 Pass - Major Risk Z-13 - Z-13APB1 - Z-13APB1 3,730.48 3,775.00 149.20 50.02 99.18 Pass - Major Risk Z-14 - Z-14 - Z-14 3,473.98 3,500.00 270.50 53.99 216.54 Pass - Major Risk Z-14 - Z -14A - Z-1 4A 3,473.98 3,500.00 270.50 53.99 216.54 Pass - Major Risk Z-14 - Z -14B - Z -14B 3,482.83 3,500.00 270.61 54.13 216.51 Pass - Major Risk Z-15 - Z-15 - Z-15 1,782.49 1,800.00 295.06 29.91 265.16 Pass - Major Risk 11/1/2016 1:31: IOPM Page 3 of 6 COMPASS 5000.1 Build 818 AO OCC OFFSET REPORT ,.N BP sbp Anticollision Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay ND Reference: Z -23B @ 81.06usft (Doyon 16) Reference Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Site Error: O.00usft North Reference: True Reference Well: Z-23 Survey Calculation Method: Minimum Curvature Well Error: O.00usft Output errors are at 1.00 sigma Reference Wellbore Z -23C Database: EDM R5K - Alaska PROD - ANCP1 Reference Design: Z -23C Offset ND Reference: Offset Datum //%. BAKER HUGHES Summary Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Offset Well - Wellbore - Design (usft) (usft) (usft) (usft) PB Z Pad Z-15 - Z -15A - Z -15A 1,782.49 1,800.00 295.06 29.91 265.16 Pass - Major Risk Z-15 - Z-15APB1 - Z-15APB1 1,782.49 1,800.00 295.06 29.91 265.16 Pass - Major Risk Z-15 - Z-15AP62 - Z-15APB2 1,782.49 1,800.00 295.06 29.91 265.16 Pass - Major Risk Z-16 - Z-16 - Z-16 544.32 550.00 326.77 10.96 315.81 Pass - Major Risk Z-16 - Z-1 6A - Z-1 6A 544.32 550.00 326.77 10.96 315.81 Pass - Major Risk Z-17 - Z-17 - Z-17 1,517.48 1,525.00 346.78 23.55 323.23 Pass - Major Risk Z-17 - Z -17A - Z-1 7A 1,517.48 1,525.00 346.78 23.55 323.23 Pass - Major Risk Z-17 - Z-17APB1 - Z-17APB1 1,517.48 1,525.00 346.78 23.55 323.23 Pass - Major Risk Z-18 - Plan Z-1 BA - Plan #1 Z-1 8A 681.84 700.00 368.68 11.27 357.41 Pass - Major Risk Z-18 - Z-18 - Z-18 666.05 675.00 368.49 11.08 357.41 Pass - Major Risk Z-19 - Z-19 - Z-19 1,577.13 1,625.00 309.34 37.04 272.31 Pass - Major Risk Z-19 - Z-1 9A - Z-1 9A 1,581.13 1,625.00 309.46 37.15 272.32 Pass - Major Risk Z-20 - Z-20 - Z-20 2,817.60 2,825.00 401.01 41.53 359.49 Pass - Major Risk Z-21 - Z-21 - Z-21 2,713.78 2,725.00 85.23 40.19 45.06 Pass - Major Risk Z-21 - Z -21A - Z -21A 2,720.51 2,725.00 85.30 40.21 45.11 Pass - Major Risk Z-210 - Z-210 - Z-210 1,521.27 1,600.00 218.46 26.19 192.31 Pass - Major Risk Z-210 - Z-210PB1 - Z-210PB1 1,521.27 1,600.00 218.46 26.19 192.31 Pass - Major Risk Z-22 - Z-22 - Z-22 839.22 850.00 35.04 12.66 22.38 Pass - Major Risk Z-22 - Z -22A - Z -22A 841.15 850.00 35.08 12.70 22.38 Pass - Major Risk Z-22 - Z -22B - Z -22B 846.62 850.00 35.21 12.83 22.38 Pass - Major Risk Z-23 - Z-23 - Z-23 7,011.05 7,025.00 26.29 28.83 -2.52 FAIL - Major Risk Z-23 - Z -23A- Z -23A 7,021.43 7,025.00 27.81 28.97 -1.12 FAIL- Major Risk Z-23 - Z-23ALIXX ( has reports do not delete) - Z 25.70 25.70 0.00 1.29 -1.29 FAIL - Major Risk Z-23 - Z-236 - Z -23B 9,575.00 9,825.00 292.52 16.41 277.79 Pass - Major Risk Z-23 - Z-23PB1 - Z-23PB1 5,789.34 5,800.00 19.34 36.30 -16.89 FAIL- Major Risk Z-24 - Z-24 - Z-24 3,014.44 3,025.00 16.44 41.73 -25.28 FAIL - Major Risk Z-25 - Z-25 - Z-25 3,039.37 3,050.00 57.71 45.38 12.35 Pass - Major Risk Z-26 - Z-26 - Z-26 2,791.90 2,800.00 80.72 40.39 40.34 Pass - Major Risk Z-26 - Z -26A - Z -26A 2,791.90 2,800.00 80.72 40.39 40.34 Pass - Major Risk Z-27 - Z-27 - Z-27 1,288.03 1,300.00 315.42 20.72 294.70 Pass - Major Risk Z-28 - Z-28 - Z-28 3,236.18 3,250.00 363.62 45.02 318.60 Pass - Major Risk Z-29 - Z-29 - Z-29 1,583.31 1,600.00 381.43 23.48 357.95 Pass - Major Risk Z-30 - Z-30 - Z-30 1,191.45 1,200.00 413.83 18.28 395.55 Pass - Major Risk Z-30 - Z -30A - Z -30A 1,200.50 1,200.00 414.01 18.47 395.54 Pass - Major Risk Z -31 -Z -31-Z-31 1,360.63 1,375.00 448.41 25.82 422.59 Pass - Major Risk Z-32 - Z-32 - Z-32 1,630.33 1,650.00 488.90 25.05 463.85 Pass - Major Risk Z-32 - Z -32A - Z -32A 1,631.06 1,650.00 488.91 25.06 463.85 Pass - Major Risk Z-32 - Z -32B - Z -32B 1,612.07 1,625.00 488.66 24.81 463.85 Pass - Major Risk Z-32-Z-32BL1-Z-32BL1 1,612.07 1,625.00 488.66 24.81 463.85 Pass - Major Risk Z-32 - Z-32BPB1 - Z-32BPB1 1,612.07 1,625.00 488.66 24.81 463.85 Pass - Major Risk Z-32 - Z-32BPB2 - Z-32BPB2 1,612.07 1,625.00 488.66 24.81 463.85 Pass - Major Risk Z-32 - Z -32C - Plan #7b Z -32C apprved 1,621.66 1,650.00 488.78 24.97 463.81 Pass - Major Risk Z-32 - Z -32C - Z -32C 1,620.61 1,650.00 488.77 24.96 463.81 Pass - Major Risk Z-33 - Z -33A - Z -33A 4,937.12 4,950.00 447.43 51.25 396.18 Pass - Major Risk Z-39 - Z-39 - Z-39 420.86 425.00 260.43 6.74 253.68 Pass - Major Risk Z-39 - Z -39A - Z -39A 420.86 425.00 260.43 6.75 253.68 Pass - Major Risk Z-46 - Z-46 - Z-46 197.43 200.00 381.73 3.69 378.04 Pass - Major Risk Z-46 - Z -46A - Z -46A 197.43 200.00 381.73 3.69 378.04 Pass - Major Risk Z-50 - Z-50 - Plan #8 Z-50 v6 1,167.14 1,175.00 453.92 16.86 437.07 Pass - Major Risk Z-50 - Z-50 - Z-50 667.82 675.00 445.91 10.60 435.31 Pass - Major Risk Z -504A - Z -504A - Z -504A 123.61 125.00 220.97 3.98 216.99 Pass - Major Risk Z -504B - Z-5048 - Z -504B 123.54 125.00 190.95 3.98 186.97 Pass - Major Risk Z-61 - Z-61 - Z-61 957.33 975.00 479.02 24.77 454.24 Pass - Major Risk 11/1/2016 1:31: IOPM Page 4 of 6 COMPASS 5000.1 Build 81B A0(3CC Co F F S E T IFRIEP 0 RT by +4$ Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0 OOusft Reference Well: Z-23 Well Error: 0-00usft Reference Wellbore Z -23C Reference Design: Z -23C BP Anticollision Report Local Co-ordinate Reference: ND Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset ND Reference: Well Z-23 Z -23B @ 81.06usft (Doyon 16) Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum rihI BAKER HUGHES Summary Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Offset Well - Wellbore - Design (usft) (usft) (usft) (usft) PB Z Pad Z-61 - Z-61 PB1 - Z-61 PB1 957.33 975.00 479.02 24.77 454.24 Pass - Major Risk Z-66 - Z-66 - Z-66 1,791.75 1,875.00 444.32 28.67 415.89 Pass - Major Risk Z-66 - Z-66PB1 - Z-66PB1 1,876.56 1,975.00 441.21 31.50 410.32 Pass - Major Risk Z-69 - Z-69 - Z-69 4,842.73 5,200.00 374.81 54.30 321.10 Pass - Major Risk Z-70 - Z-70 - Z-70 2,159.69 2,325.00 490.40 35.98 454.92 Pass - Major Risk 11/1/2016 1,31. IOPM Page 5 of 6 COMPASS 5000.1 Build 81B Ak5iCC 0FR'3ET 'R-`Ep0 RT b BP //.k2 00+J ,�' p Anticollision Report BAKER HUGHES Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: O.00usft Reference Well: Z-23 Well Error: O.00usft Reference Wellbore Z -23C Reference Design: Z -23C Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Z -23B @ 81.06usft (Doyon 16) Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum reference Depths are relative to Z -23B @ 81.06usft (Doyon 16) Coordinates are relative to: Z-23 )ffset Depths are relative to Offset Datum Coordinate System is US State Plane 1927 (Exact solution), Alaska Zone 04 ventral Meridian is 150° 0'0.000 W ° Grid Convergence at Surface is: 0.76° I, :03) 450 C O 12 CU CL un 300- 2 c a) 2, Plan2005,Plai 2, 31anZ4?05PB1, PlanF-106, PI; � 5[1 i, IanZ�111,P1'an 2, 31an Z-203, Plai V6 V5 VO Ladder.Plot 0- 0 2000 $ Z-13,Z-4*6-13AV2 6000 8(0 �- Z-13,Z-13APB1,Ae&Wbepth (2000 usfffin) $ Z -14,Z -14,Z -14V1 Z-14, Z-14 B, Z -14B V9 $ Z -15,Z -15,Z -15V1 -- Z-15,Z-15A,Z-15AV0 -� Z-1 5,Z-1 5APB1, Z-1 5APB1 VO - Z-15,Z-15APB2,Z-15APB2V0 -�- Z -16,Z -16,Z -16V7 - Z-16,Z-16A,Z-16AV0 -k}- Z-1 7, Z-1 7, Z-1 7 V1 $ Z-17,Z-17A,Z-17AV0 -" An Z -30,Z-30 V7 ) 12000 $ Z-30, Z -30A, Z -30A V9 $ Z -31,Z -31,Z-31 V1 $ Z-32,Z-32A,Z-32AV0 $ Z-32,Z-32B,Z-32B VO -Xf Z-32,Z-32BL1,Z-32BL1 VO -#� Z-32,Z-32BPB1,Z-32BP61 V0 $ Z32,Z-32BPB2,Z-32BPB2V0 . Z -32,Z -32C, Plan #7b Z -32C ar Z-32, Z -32C, Z -32C V0 $ Z-33, Z -33A, Z -33A V 1 Z -39,Z -39,Z-39 V18 11/1/2016 1:31:1OPM Page 6 of 6 COMPASS 5000.1 Build 81B AOOC�� OFFSET r`�%EpORT ` E.�bn ZRO&%�'6 pro/ - r . Z- Z -25V1 si - 0- 0 2000 $ Z-13,Z-4*6-13AV2 6000 8(0 �- Z-13,Z-13APB1,Ae&Wbepth (2000 usfffin) $ Z -14,Z -14,Z -14V1 Z-14, Z-14 B, Z -14B V9 $ Z -15,Z -15,Z -15V1 -- Z-15,Z-15A,Z-15AV0 -� Z-1 5,Z-1 5APB1, Z-1 5APB1 VO - Z-15,Z-15APB2,Z-15APB2V0 -�- Z -16,Z -16,Z -16V7 - Z-16,Z-16A,Z-16AV0 -k}- Z-1 7, Z-1 7, Z-1 7 V1 $ Z-17,Z-17A,Z-17AV0 -" An Z -30,Z-30 V7 ) 12000 $ Z-30, Z -30A, Z -30A V9 $ Z -31,Z -31,Z-31 V1 $ Z-32,Z-32A,Z-32AV0 $ Z-32,Z-32B,Z-32B VO -Xf Z-32,Z-32BL1,Z-32BL1 VO -#� Z-32,Z-32BPB1,Z-32BP61 V0 $ Z32,Z-32BPB2,Z-32BPB2V0 . Z -32,Z -32C, Plan #7b Z -32C ar Z-32, Z -32C, Z -32C V0 $ Z-33, Z -33A, Z -33A V 1 Z -39,Z -39,Z-39 V18 11/1/2016 1:31:1OPM Page 6 of 6 COMPASS 5000.1 Build 81B AOOC�� OFFSET r`�%EpORT Printed 11/16/2016 9:53:55AM North America - ALASKA - BP Page 1 of 2 -Z-23/ Cementing Report Common Well Name: 05Report no : 1 �eport date : 10/29/2016 Project Prudhoe Bay Site: PB Z Pad Spud Date/Time: 6/7/1989 Event Type: COM- ONSHORE (CON) 1 Start Date: 10/27/2016 End Date: 10/30/2016 AFE No.: Contractor: NORDIC CALISTA Rig Nam /No.: NORDIC 2 Rig Release: 10/30/2016 X3-017YD-C: (1,720,544.00 ) UWI: 500292195000 Active datum: Z -23B @81.06usft (above Mean Sea Level) General Information Job type: Primary Cement job start date/time: 10/29/2016 1:OOAM Job end date/time: 10/29/2016 4.00AM Cement Company: SLB -CEMENTING Cementer: JARED WALLACE/CHARLES HACKER Cemented String: PRODUCTION LINER 1 String Size: 2.875 (in) String Set TMD: 11,553.00 (usft) Hole Size: 4.250 (in) Pipe Movement Pipe Movement: NO MOVEMENT Rotating Time (Start -End): RPM: Rotating Torque (init/avg/max): (ft-lbf) Reciprocating Time (Start -End): Recip Drag Up/Down: - (kip) SPM: Stroke Length: Fluid Name: EXHAUST PILL Fluids (1 of 1) Slurry Type: CEMENT Purpose: PRIMARY Class: G -CLASS Description: TAIL SLURRY Density: 15.30 (ppg) Yield: 1.6500 (ft'/sk) Mix Water Ratio: 5.161 (gal/sk94) Excess: Mix Method: ON -THE -FLY Sacks Used: 96.00 (941b sacks) Water Volume: 11.8 (bbl) Excess Slurry Volume: 0.0 (bbl) Density Measured by: DENSOMETER Other Volume: Total Vol in Well: 25.0 (bbl) Slurry Volume: 28.2 (bbl) Excess Measured From: EST. GAUGE HOLE Mud Type: KCL Density: 8.40 (ppg) PV: YP: Viscosity: Gels 10 Sec: Gels 10 Min: Additives Name Type Amount Units Concentration Unit D178 SILICA 35.000 % BWOC D047 ANTIFOAM AGENT 0.200 GAL/SX D-65 DISPERSANTo 1.250 /o BWOC D600 G GAS -BLOCK 1.800 GAL/SX D-167 FLUID LOSSo 0.150 /o BWOC D800 RETARDER AID 0.600 %BWOC Printed 11/16/2016 9:53:55AM Printed 11/16/2016 9:53:55AM North America -ALASKA - BP Page 2 of 2 --- - - - Cementing Report -------- Common Well Name: Z-23 3-/V5-- --- 7 Reportno.: 1 Report date: 10129/2016 Project: Prudhoe Bay Y _ Site: PB Z Pad Spud Date/Time: 6/7/1989 Event Type: COM- ONSHORE (CON) Start Date: 10/27/2016 End Date: 10/30/2016 Rig Name/No.: NORDIC 2 Rig Release: 10/30/2016 AFE No.: X3-017YD-C: (1,720,544.00) Contractor: NORDIC CALISTA UWI: 500292195000 Active datum: Z-2313@8L06usft (above Mean Sea Level) Stages Stage Stage Type Est. Top Est. Bottom Mud Circ. Mud Circ. Top Bottom Plug Pressure Float Pressure Returns Circulate Cmt Vol to Total Annular no. (usft) (usft) Rate Press. Plug Plug Bumped Bumped Held Held Prior Surface Mud Lost Flow (gpm) (psi) (psi) (min) (hr) (bbl) (bbl) After 1 PRIMARY CEMENT 8,692.00 11,553.00 Y N Y 3,500.00 Y Pumping Schedule Fluid pumped Volume Avg. Max Disp. Slurry Top Slurry Base Start Mix Cmt Start Slurry Pumping end Start Disp Foam Gas Type Gas Vol BH circ. Bh static Pumped Disp. Rate TMD TMD Pmp date/time job Used temp. temp. (bbl) Rate (bbl/min) (usft) (usft) (scf) (bbl/min) EXHAUST PILL - TAIL 28.0 3.10 8,692.00 11,553.00 N SLURRY Tests Casing Test Shoe Test Liner Top Test Test Pressure: (psi) FIT/LOT: (ppg) Liner Overlap: (usft) Time: (min) Tool: N Positive Test: (ppg) Positive Test Tool: N Cement Found between Shoe and Collar: N Open Hole Length: (usft) Negative Test: (ppg) Negative Test Tool: N Hours Before Start: (hr) Time before test: (hr) Cmt Found on Tool: N Log/Survey Evaluation Interpretation Summary CBL Run: N Cement Top: (usft) Under Pressure: (psi) How Determined: Bond Quality: TOC Sufficient: N CET Run: N Job Rating: Bond Quality: If Unsuccessful, Detection Indicator: Temp Survey: N Remedial Cement Required: N Hrs Prior to Log: (hr) How Determined: Printed 11/16/2016 9:53:55AM _ E 101i'd NOV 14 2-215 BAKER HUGHES PRINT DISTRIBUTION DIST ACGICC COMPANY BP Exploration Alaska Inc WELL NAME Z -23C FIELD Prudhoe Bay Unit COUNTY North Slope Borough BHI DISTRICT Alaska 21 6081 27 75 1 Please sign and return one copy of this transmittal form to: BP Exploration (Alaska) Inc. Petrotechnical Data Center, 1-132-1 DATA LOGGED 900 E. Benson Blvd. t\ 1AS/201(o K BENDER Anchorage, Alaska 99508 to acknowledge receipt of this data. LOG TYPE GR - RES LOG DATE October 27, 2016 AUTHORIZED BY Patrick Rider EMAIL Patrick. Rider(a)bakerhughes.com TODAYS DATE November 10, 2016 Revision STATUS Final Replacement: No Details: Requested by: --- COMPANY ADDRESS (FEDEX WILL NOT DELIVER TO P.O. 801 PERSON ATTENTION C+I FIELD FINAL CD LOGS LOGS (digital/image) J# Surveys (Fi UCOPIE # OF PRINTS # OF PRIN 16 OF COPIES # OF COPIES # O 4 J; J; J; J; J; 1 BP North Slope 1 0 1 EOA, PBOC, PRB-20 (Office 109) D&C Wells Project Aids Agatha Rutka & Barbara Glassmaker 900 E. Benson Blvd. (Anchorage, Alaska 99508 2 ConocoPhillips Alaska Inc. 0 1 1 'Attn: Ricky Elgaricio ATO 3-344 700 G Street Anchorage, AK 99510 3 ExxonMobil, Alaska 1 1 1 ,Attn: Lynda M. Vaskell and/or Leonardo Elias 3201 C Street, Suite 505 Anchorage, AK 99503 4S tateof Alaska - AOGCC 1 1 1 Atm: Makana Bender 333 W. 7th Ave, Suite 100 Anchorage, Alaska 99501 5 [NR - Division Atm: Sean Clifton 550 West 7th Avenue, Suite 802 Anchorage, Alaska 99501 ** Stamp "confidential' on all material deliver to DNR _ ,I 6 BP Exploration (Alaska) Inc. Petrotechnical Data Center, LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Attn: David Itter TOTALS FOR THIS PAGE: 0 3 4 5 0 0 TOTALS FOR ALL PAGES: 0 3 4 5 0 0 NOV 14 2016 North America - ALASKA - BP Prudhoe Bay PB Z Pad Z-23 Z -23C 500292195003 Design: Z -23C Final Survey Report 01 November, 2016 21 60�� 27 75 1 Frpp--- 'A as BAKER HUGHES Project Prudhoe Bay, GPB, PRUDHOE BAY 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 PB Z Pad, TR -11-12 Site Position: Northing: 5,957,230.170 usft Latitude: 70° 17'33.051 N From: Map Easting: 601,304.820 usft Longitude: 149" 10'47.365 W Position Uncertainty: 0.00 usft Slot Radius: 0.000 in Grid Convergence: 0.77 ° Well Z-23 Well Position +N/ -S 0.00 usft Northing: 5,959,360.030 usft Latitude: 70° 17' 54.240 N +E/ -W 0.00 usft Easting: 599,459.070 usft Longitude: 149° 11'40.333 W Position Uncertainty 0.00 usft Wellhead Elevation: 55.36 usft Ground Level: 56.02 usft Wellbore Z -23C Magnetics Model Name Sample Date Declination Dip Angle Field Strength (I (I (nT) BGG M2016 11/1/2016 18.06 80.97 57,554 Design BP rIA.2 pFinal Survey Report BAKER Version: Phase: ACTUAL HUGHES Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 +EI -W Direction Project: Prudhoe Bay ND Reference: Z -23B @ 81.06usft (Doyon 16) (usft) (I Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) 0.00 120.00 Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Page 2 COMPASS 5000 1 Build 81B Design: Z -23C Database: EDM R5K-Alaska PROD -ANCP1 Project Prudhoe Bay, GPB, PRUDHOE BAY 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 PB Z Pad, TR -11-12 Site Position: Northing: 5,957,230.170 usft Latitude: 70° 17'33.051 N From: Map Easting: 601,304.820 usft Longitude: 149" 10'47.365 W Position Uncertainty: 0.00 usft Slot Radius: 0.000 in Grid Convergence: 0.77 ° Well Z-23 Well Position +N/ -S 0.00 usft Northing: 5,959,360.030 usft Latitude: 70° 17' 54.240 N +E/ -W 0.00 usft Easting: 599,459.070 usft Longitude: 149° 11'40.333 W Position Uncertainty 0.00 usft Wellhead Elevation: 55.36 usft Ground Level: 56.02 usft Wellbore Z -23C Magnetics Model Name Sample Date Declination Dip Angle Field Strength (I (I (nT) BGG M2016 11/1/2016 18.06 80.97 57,554 Design Z -23C Audit Notes: Version: Phase: ACTUAL Tie On Depth: 9,263.64 Vertical Section: Depth From (TVD) +NI -S +EI -W Direction (usft) (usft) (usft) (I 25.70 0.00 0.00 120.00 11/1/2016 1 23 32PM Page 2 COMPASS 5000 1 Build 81B BP WIPS.g Obp Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z -23B @ 81.06usft (Doyon 16) Site: PS Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C Database: EDM R5K - Alaska PROD - ANCP1 Survey Program Date 11/1/2016 Azi (azimuth) TVD From To E/W Northing (usft) (usft) Survey (Wellbore) Tool Name Description 100.02 4,000.02 Z -23A Srvy 1 GYD-GC MS (Z-23PB1) GYD-GC-MS Gyrodata gyrocompassing m/s 4,100.02 6,700.02 Z -23A Srvy 1 GYD-GC MS (Z-23) GYD-GC-MS Gyrodata gyrocompassing m/s 6,718.00 6,748.00 Z -23B Srvy 1 Inc+Trend (Z -23B) INC+TREND Inclinometer+ known azi trend 6,809.92 9,263.64 Z -23B Srvy 2 MWD+IFR+MS (Z -23B) MWD+IFR+MS-WOCA MWD + IFR + Multi Station W/O Crustal 9,279.00 11,865.39 BHI MWD CTK 4-1/4" (Z -23C) MWD MWD - Standard Survey MD Inc Azi (azimuth) TVD TVDSS NIS E/W Northing Easting DLeg (usft) 0 V) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) 25.70 0.00 0.00 25.70 -55.36 0.00 0.00 5,959,360.030 599,459.070 0.00 100.02 0,15 234.65 100.02 18.96 -0.06 -0.08 5,959,359.972 599,458.991 0.20 200.02 0.22 259.04 200.02 118.96 -0.17 -0.37 5,959,359.856 599,458.698 0.10 300.02 0.17 195.54 300.02 218.96 -0.35 -0.60 5,959,359.674 599,458.472 0.21 400.02 0.23 229.48 400.02 318.96 -0.62 -0.80 5,959,359.398 599,458.283 0.13 500.02 0.37 218.67 500.02 418.96 -1.00 -1.15 5,959,359.011 599,457.934 0.15 600.02 0.15 141.82 600.02 518.96 -1.36 -1.27 5,959,358.654 599,457.818 0.37 700.02 0.41 180.59 700.01 618.95 -1.82 -1.19 5,959,358.195 599,457.901 0.31 800.02 0.27 129.09 800.01 718.95 -2.33 -1.01 5,959,357.691 599,458.087 0.32 900.02 0.19 130.05 900.01 818.95 -2.58 -0.70 5,959,357.440 599,458.400 0.08 1,000.02 0.39 179.02 1,000.01 918.95 -3.03 -0.57 5,959,356.995 599,458.539 0.30 1,100.02 0.45 165.72 1,100.01 1,018.95 -3.75 -0.47 5,959,356.275 599,458.651 0.11 1,200.02 0.39 171.06 1,200.01 1,118.95 -4.47 -0.32 5,959,355.561 599,458.810 0.07 1,300.02 0.48 148.45 1,300.00 1,218.94 -5.16 -0.05 5,959,354.871 599,459.091 0.19 1,400.02 0.50 101.37 1,400.00 1,318.94 -5.60 0.60 5,959,354.437 599,459.744 0.39 1,500.02 0.73 100.25 1,499.99 1,418.93 -5.80 1.65 5,959,354.252 599,460.801 0.23 1,600.02 0.93 90.77 1,599.98 1,518.92 -5.93 3.09 5,959,354.146 599,462.241 0.24 1,700.02 1.32 83.32 1,699.96 1,618.90 -5.80 5.05 5,959,354.295 599,464.194 0.42 1,800.02 1.08 82.75 1,799.94 1,718.88 -5.55 7.13 5,959,354.576 599,466.270 0.24 V. Sec (usft) 0.00 -0.04 -0.24 -0.35 -0.38 -0.49 -0.42 -0.1' 0.28 0.68 1.02 1.47 1.96 2.54 3.32 4.33 5.64 7.27 8.95 111112016 1 23.32PM Page 3 COMPASS 5000.1 Build 81B bBP HIM pFinal Survey Report BAKER HUGHES Company: North America - ALASKA - BP Project: Prudhoe Bay Site: PB Z Pad Well: Z-23 Wellbore: Z -23C Design: Z -23C Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Database: Well Z-23 Z -23B @ 81.06usft (Doyon 16) Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature EDM R5K - Alaska PROD - ANCP 1 11/1/2016 1.23:32PM Page 4 COMPASS 5000.1 Build 81B Survey MD Inc Azl (azimuth) TVD TVDSS N/S E/W Northing Easting DLeg V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 1,900.02 1.11 81.55 1,899.92 1,818.86 -5.29 9.02 5,959,354.862 599,468.159 0.04 10.46 I 2,000.02 1.17 88.42 1,999.90 1,918.84 -5.12 11.00 5,959,355.059 599,470.135 0.15 12.0 2,100.02 1.14 81.85 2,099.88 2,018.82 -4.95 13.00 5,959,355.254 599,472.137 0.14 13.74 2,200.02 1.08 86.49 2,199.87 2,118.81 -4.75 14.93 5,959,355.478 599,474.060 0.11 15.30 2,300.02 0.93 93.20 2,299.85 2,218.79 -4.74 16.68 5,959,355.514 599,475.810 0.19 16.81 2,400.02 0.74 118.35 2,399.84 2,318.78 -5.09 18.06 5,959,355.180 599,477.193 0.41 18.18 2,500.02 0.77 108.48 2,499.83 2,418.77 -5.61 19.26 5,959,354.677 599,478.406 0.13 19.491 2,600.02 0.76 139.30 2,599.82 2,518.76 -6.32 20.33 5,959,353.975 599,479.485 0.41 20.77 2,646.32 0.68 136.60 2,646.12 2,565.06 -6.76 20.72 5,959,353.547 599,479.881 0.18 21.33 13 3/8" 2,700.02 0.60 132.62 2,699.82 2,618.76 -7.18 21.15 5,959,353.129 599,480.314 0.18 21.91 2,800.02 0.51 170.47 2,799.81 2,718.75 -7.98 21.61 5,959,352.342 599,480.783 0.37 22.70 2,900.02 0.52 170.41 2,899.81 2,818.75 -8.86 21.76 5,959,351.457 599,480.944 0.01 23.28 3,000.02 0.33 192.45 2,999.80 2,918.74 -9.59 21.77 5,959,350.729 599,480.967 0.25 23.65 3,100.02 0.60 195.69 3,099.80 3,018.74 -10.38 21.57 5,959,349.941 599,480.774 0.27 23.87 3,200.02 0.19 208.80 3,199.80 3,118.74 -11.03 21.35 5,959,349.289 599,480.561 0.42 24.00 3,300.02 0.20 217.65 3,299.80 3,218.74 -11.31 21.16 5,959,349.003 599,480.378 0.03 23.9F 3,400.02 0.37 137.91 3,399.80 3,318.74 -11.69 21.27 5,959,348.627 599,480.493 0.39 24.27 3,500.02 0.37 135.80 3,499.79 3,418.73 -12.16 21.71 5,959,348.162 599,480.941 0.01 24.88 3,600.02 1.74 337.73 3,599.78 3,518.72 -10.98 21.36 5,959,349.331 599,480.575 2.09 23.99 3,700.02 4.12 326.92 3,699.64 3,618.58 -6.57 18.83 5,959,353.712 599,477.981 2.43 19.59 3,800.02 4.68 325.94 3,799.35 3,718.29 -0.18 14.58 5,959,360.044 599,473.651 0.57 12.72 3,900.02 3.88 328.20 3,899.07 3,818.01 6.08 10.51 5,959,366.245 599,469.502 0.82 6.07 4,000.02 2.26 325.90 3,998.92 3,917.86 10.59 7.63 5,959,370.714 599,466.554 1.62 1.31 4,100.02 1.69 319.00 4,098.86 4,017.80 13.33 5.55 5,959,373.432 599,464.445 0.62 -1.86 4,200.02 1.55 288.59 4,198.82 4,117.76 14.87 3.30 5,959,374.946 599,462.176 0.86 -4.58 4,300.02 2.15 268.22 4,298.77 4,217.71 15.25 0.15 5,959,375.277 599,459.014 0.88 -7.501 11/1/2016 1.23:32PM Page 4 COMPASS 5000.1 Build 81B Survey BP reA.s Ob p Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 TVDSS Project: Prudhoe Bay ND Reference: Z -23B @ 81.06usft (Doyon 16) Easting Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) V) Well: Z-23 North Reference: True (usft) Wellbore: Z -23C Survey Calculation Method: Minimum Curvature (°/I00usft) Design: Z -23C Database: EDM R5K - Alaska PROD - ANCP1 255.22 Survey MD Inc Azi (azimuth) ND TVDSS NIS EIW Northing Easting DLeg V. Sec (usft) V) M (usft) (usft) (usft) (usft) (usft) (usft) (°/I00usft) (usft) 4,400.02 2.02 255.22 4,398.71 4,317.65 14.74 -3.43 5,959,374.722 599,455.443 0.49 -10.35 4,500.02 1.62 262.96 4,498.66 4,417.60 14.12 -6.54 5,959,374.058 599,452.345 0.47 -12.72 4,600.02 1.35 271.58 4,598.62 4,517.56 13.98 -9.12 5,959,373.883 599,449.766 0.35 -14.89 4,700.02 1.07 257.61 4,698.60 4,617.54 13.81 -11.21 5,959,373.691 599,447.679 0.40 -16.61 4,800.02 0.93 241.19 4,798.59 4,717.53 13.22 -12.83 5,959,373.081 599,446.063 0.32 -17.73 4,900.02 0.80 231.62 4,898.57 4,817.51 12.40 -14.09 5,959,372.240 599,444.816 0.19 -18.40 5,000.02 0.86 244.05 4,998.56 4,917.50 11.64 -15.31 5,959,371.462 599,443.604 0.19 -19.08 5,100.02 0.76 250.22 5,098.55 5,017.49 11.08 -16.61 5,959,370.892 599,442.313 0.13 -19.93 5,200.02 0.58 247.76 5,198.55 5,117.49 10.67 -17.71 5,959,370.462 599,441.226 0.18 -20.67 5,300.02 0.67 249.45 5,298.54 5,217.48 10.27 -18.72 5,959,370.052 599,440.215 0.09 -21.35 5,400.02 0.75 248.17 5,398.53 5,317.47 9.82 -19.88 5,959,369.588 599,439.067 0.08 -22.13 5,500.02 0.96 225.79 5,498.52 5,417.46 9.00 -21.08 5,959,368.744 599,437.870 0.39 -22.76 5,600.02 0.78 229.82 5,598.51 5,517.45 7.97 -22.21 5,959,367.707 599,436.763 0.19 -23.22 5,700.02 0.86 242.20 5,698.50 5,617.44 7.18 -23.39 5,959,366.902 599,435.590 0.19 -23.85 5,800.02 0.72 2-50.51 5,798.49 5,717.43 6.62 -24.65 5,959,366.326 599,434.341 0.18 -24.66 5,900.02 2.85 9.02 5,898.45 5,817.39 8.87 -24.85 5,959,368.569 599,434.109 3.26 -25.9 6,000.02 5.24 19.05 5,998.20 5,917.14 15.64 -22.97 5,959,375.365 599,435.900 2.48 -27.71 6,100.02 7.44 22.77 6,097.58 6,016.52 25.93 -18.97 5,959,385.704 599,439.759 2.24 -29.39 6,200.02 9.42 19.55 6,196.50 6,115.44 39.61 -13.73 5,959,399.454 599,444.822 2.03 -31.69 6,300.02 11.21 19.93 6,294.88 6,213.82 56.46 -7.67 5,959,416.382 599,450.650 1.79 -34.88 6,400.02 12.93 21.54 6,392.66 6,311.60 76.01 -0.25 5,959,436.023 599,457.812 1.75 -38.22 6,500.02 14.70 25.35 6,489.77 6,408.71 97.89 9.29 5,959,458.021 599,467.062 1.99 -40.90 6,600.02 16.19 26.97 6,586.15 6,505.09 121.78 21.04 5,959,482.065 599,478.499 1.55 -42.66 6,700.02 18.08 28.71 6,681.71 6,600.65 147.81 34.82 5,959,508.279 599,491.930 1.96 -43.75 6,718.00 18.74 28.80 6,698.77 6,617.71 152.79 37.55 5,959,513.293 599,494.596 3.67 -43.87 96/81, 6,734.00 20.10 24.71 6,713.86 6,632.80 157.54 39.94 5,959,518.074 599,496.920 12.02 -44.18 111112016 1 23:32PM Page 5 COMPASS 5000.1 Build 81B BP WE&9 bpFinal Survey Report BAKER HUGHES Company: North America - ALASKA - BP Project: Prudhoe Bay Site: PB Z Pad Well: Z-23 Wellbore: Z -23C Design: Z -23C Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Database: Well Z-23 Z -23B @ 81.06usft (Doyon 16) Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature EDM R5K - Alaska PROD - ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS NIS EIW Northing Easting DLeg V. Sec (usft) V) (') (usft) (usft) (usft) (usft) (usft) (usft) (°HOOusft) (usft) 6,748.00 20.10 24.71 6,727.01 6,645.95 161.91 41.95 5,959,522.470 599,498.873 0.00 -44.62 6,809.92 22.39 14.05 6,784.74 6,703.68 183.03 49.27 5,959,543.680 599,505.907 7.24 -48.8 6,905.74 25.03 12.80 6,872.46 6,791.40 220.51 58.19 5,959,581.268 599,514.332 2.80 -59.86 7,001.11 24.90 2.42 6,958.96 6,877.90 260.26 63.51 5,959,621.084 599,519.125 4.59 -75.13 7,095.11 25.06 352.30 7,044.21 6,963.15 299.78 61.68 5,959,660.570 599,516.770 4.54 -96.47 7,185.50 23.33 347.62 7,126.66 7,045.60 336.24 55.27 5,959,696.938 599,509.885 2.86 -120.25 7,280.04 22.07 344.11 7,213.88 7,132.82 371.61 46.40 5,959,732.185 599,500.542 1.96 -145.62 7,373.61 21.59 344.05 7,300.74 7,219.68 405.07 36.85 5,959,765.512 599,490.557 0.51 -170.62 7,466.08 21.10 344.68 7,386.87 7,305.81 437.48 27.78 5,959,797.798 599,481.057 0.59 -194.68 7,561.90 22.96 345.89 7,475.69 7,394.63 472.24 18.67 5,959,832.434 599,471.484 2.00 -219.95 7,653.80 22.75 345.60 7,560.38 7,479.32 506.84 9.88 5,959,866.906 599,462.239 0.26 -244.86 7,749.78 22.55 345.65 7,648.95 7,567.89 542.64 0.70 5,959,902.583 599,452.591 0.21 -270.71 7,840.56 23.78 342.19 7,732.42 7.651.36 576.93 -9.21 5,959,936.738 599,442.225 2.02 -296.44 7,933.11 23.78 342.55 7,817.11 7,736.05 612.50 -20.51 5,959,972.148 599,430.454 0.16 -324.01 8,029.57 22.52 341.35 7,905.80 7,824.74 648.55 -32.25 5,960,008.043 599,418.240 1.39 -352.21 8,126.87 22.31 341.28 7,995.75 7,914.69 683.70 -44.14 5,960,043.025 599,405.891 0.22 -380.08 8,224.65 21.93 341.08 8,086.33 8,005.27 718.55 -56.02 5,960,077.712 599,393.554 0.40 -407.76 8,320.16 21.26 340.91 8,175.14 8,094.08 751.79 -67.46 5,960,110.791 599,381.670 0.70 -434.321 8,405.39 20.98 342.97 8,254.64 8,173.58 780.98 -76.99 5,960,139.851 599,371.763 0.93 -457.161 8,502.06 21.96 344.82 8,344.61 8,263.55 814.97 -86.79 5,960,173.709 599,361.513 1.23 -482.65 8,596.05 22.96 344.95 8,431.47 8,350.41 849.64 -96.15 5,960,208.244 599,351.694 1.07 -508.09 8,690.49 26.63 345.46 8,517.18 8,436.12 887.93 -106.25 5,960,246.392 599,341.089 3.89 -535.98 8,784.16 30.86 344.79 8,599.29 8,518.23 931.45 -117.83 5,960,289,754 599,328.936 4.53 -567.77 8,849.33 33.97 343.37 8,654.30 8,573.24 965.03 -127.43 5,960,323.204 599,318.895 4.91 -592.87 8,913.00 34.74 343.95 8,706.87 8,625.81 999.51 -137.53 5,960,357.544 599,308.335 1.32 -618.86 DRILLING LINER 1 8,923.61 34.87 344.05 8,715.58 8,634.52 1,005.33 -139.20 5,960,363.342 599,306.590 1.32 -623.22 111112016 1:23 32PM Page 6 COMPASS 5000.1 Build 81B 111112016 1:23 32PM Page 7 COMPASS 5000.1 Build 818 BP IeAr2 b p Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Local Coordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z -23B @ 81.06usft (Doyon 16) Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True NIS Wellbore: Z -23C Survey Calculation Method: Minimum Curvature DLeg Design: Z -23C Database: EDM R5K-Alaska PROD - ANCP1 (°) 111112016 1:23 32PM Page 7 COMPASS 5000.1 Build 818 Survey MD Inc Azi (azimuth) TVD TVDSS NIS EIW Northing Easting DLeg V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usft) (°I100usft) (usft) 8,954.57 39.13 344.30 8,740.30 8,659.24 1,023.25 -144.28 5,960,381.194 599,301.275 13.77 -636.51E 8,985.11 43.40 344.54 8,763.25 8,682.19 1,042.65 -149.69 5,960,400.518 599,295.613 13.99 -650.96 9,017.29 47.60 346.11 8,785.80 8,704.74 1,064.85 -155.49 5,960,422.637 599,289.518 13.51 -667.08 9,047.03 48.27 345.35 8,805.72 8,724.66 1,086.25 -160.93 5,960,443.958 599,283.793 2.95 -682.49 9,078.35 49.18 342.64 8,826.39 8,745.33 1,108.87 -167.42 5,960,466.489 599,277.002 7.12 -699.43 9,110.77 53.62 339.92 8,846.61 8,765.55 1,132.85 -175.57 5,960,490.358 599,268.540 15.18 -718.47 9,141.88 58.29 338.69 8,864.02 8,782.96 1,156.96 -184.68 5,960,514.337 599,259.109 15.36 -738.42 9,172.00 62.41 333.74 8,878.93 8,797.87 1,180.88 -195.25 5,960,538.120 599,248.223 19.77 -759.54 9,205.78 66.53 331.48 8,893.48 8,812.42 1,207.93 -209.28 5,960,564.981 599,233.840 13.61 -785.21 9,235.75 70.17 330.51 8,904.54 8,823.48 1,232.29 -222.79 5,960,589.154 599,220.013 12.51 -809.09 9,263.64 73.99 328.98 8,913.12 8,832.06 1,255.21 -236.16 5,960,611.889 599,206.341 14.66 -832.12 TIP 9,279.00 76.57 328.44 8,917.02 8,835.96 1,267.90 -243.88 5,960,624.478 599,198.459 17.14 -845.15 KOP/Top of Whipstock 9,300.01 80.09 323.24 8,921.27 8,840.21 1,284.91 -255.43 5,960,641.336 599,186.684 29.46 -863.66 Interpolated Azimuth 9,330.47 86.56 315.82 8,924.82 8,843.76 1,307.89 -275.05 5,960,664.050 599,166.762 32.19 -892.15 Interpolated Azimuth 9,360.24 86.37 308.68 8,926.66 8,845.60 1,327.86 -297.03 5,960,683.721 599,144.521 23.95 -921.16 Interpolated Azimuth 9,390.89 86.96 301.41 8,928.44 8,847.38 1,345.41 -322.06 5,960,700.945 599,119.259 23.76 -951.62 9,421.10 83.75 291.53 8,930.89 8,849.83 1,358.82 -348.96 5,960,713.994 599,092.172 34.28 -981.63 9,448.67 80.96 280.40 8,934.57 8,853.51 1,366.33 -375.20 5,960,721.157 599,065.854 41.27 -1,008.10 9,480.31 83.28 269.63 8,938.92 8,857.86 1,369.06 -406.37 5,960,723.471 599,034.652 34.50 -1,036.46 9,510.47 83.60 256.75 8,942.38 8,861.32 1,365.51 -436.06 5,960,719.532 599,005.017 42.44 -1,060.40 9,540.49 83.13 245.31 8,945.86 8,864.80 1,355.84 -464.21 5,960,709.486 598,976.998 37.88 -1,079.94 9,570.63 84.55 234.18 8,949.11 8,868.05 1,340.76 -490.05 5,960,694.070 598,951.362 37.01 -1,094.78 9,606.75 82.79 218.52 8,953.11 8,872.05 1,316.07 -515.95 5,960,669.037 598,925.796 43.36 -1,104.86 111112016 1:23 32PM Page 7 COMPASS 5000.1 Build 818 BP W/,a9 pFinal Survey Report BAKER HUGHES Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z -23B @ 81.06usft (Doyon 16) Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C Database: EDM RSK- Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS N/S E/W Northing Easting DLeg V. Sec (usft) V) V) (usft) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) 9,637.44 84.38 209.23 8,956.55 8,875.49 1,290.77 -532.92 5,960,643.523 598,909.157 30.52 -1,106.91 9,667.19 85.14 205.02 8,959.27 8,878.21 1,264.41 -546.43 5,960,616.988 598,896.005 14.32 -1,105.4 9,697.41 83.79 202.57 8,962.18 8,881.12 1,236.89 -558.56 5,960,589.313 598,884.236 9.22 -1,102.18 9,727.37 82.78 197.38 8,965.69 8,884.63 1,208.94 -568.73 5,960,561.230 598,874.446 17.53 -1,097.00 9,757.97 83.81 192.60 8,969.26 8,888.20 1,179.59 -576.58 5,960,531.783 598,866.979 15.87 -1,089.13 9,790.51 84.77 18926 8,972.50 8,891.44 1,147.81 -582.72 5,960,499.921 598,861.263 10.63 -1,078.55 9,817.41 86.92 186.62 8,974.45 8,893.39 1,121.24 -586.42 5,960,473.308 598,857.910 12.64 -1,068.48 9,850.61 87.64 182.62 8,976.03 8,894.97 1,088.19 -589.10 5,960,440.231 598,855.678 12.23 -1,054.27 9,884.90 85.82 175.92 8,977.98 8,896.92 1,053.98 -588.66 5,960,406.032 598,856.565 20.22 -1,036.78 9,916.13 87.94 172.46 8,979.69 8,898.63 1,022.96 -585.50 5,960,375.063 598,860.131 12.98 -1,018.54 9,940.23 87.91 169.30 8,980.56 8,899.50 999.19 -581.69 5,960,351.341 598,864.262 13.10 -1,003.35 9,970.39 88.99 165.85 8,981.37 8,900.31 969.75 -575.20 5,960,321.994 598,871.137 11.98 -983.01 9,998.33 87.73 161.86 8,982.17 8,901.11 942.93 -567.44 5,960,295.280 598,879.254 14.97 -962.88 10,030.30 87.63 157.84 8,983.47 8,902.41 912.94 -556.44 5,960,265.449 598,890.651 12.57 -938.36 10,060.35 87.69 155.41 8,984.70 8.903.64 885.38 -544.52 5,960,238.052 598,902.925 8.08 -914.26 10,092.43 86.37 151.15 8,986.36 8,905.30 856.78 -530.12 5,960,209.639 598,917.702 13.88 -887.49 10,121.32 86.50 147.37 8,988.16 8,907.10 832.00 -515.39 5,960,185.060 598,932.763 13.07 -862.3< 10,149.57 87.70 143.19 8,989.59 8,908.53 808.81 -499.32 5,960,162.093 598,949.133 15.38 -836.83 10,180.01 89.11 140.16 8,990.43 8,909.37 784.95 -480.45 5,960,138.479 598,968.312 10.98 -806.56 10,214.26 89.32 137.48 8,990.90 8,909.84 759.17 -457.91 5,960,113.009 598,991.196 7.85 -776.151 10,240.81 88.68 134.57 8,991.37 8,910.31 740.07 -439.48 5,960,094.154 599,009.876 11.22 -750.63 10,269.97 90.37 131.15 8,991.61 8,910.55 720.24 -418.11 5,960,074.610 599,031.504 13.08 -722.21 10,300.97 88.59 128.15 8,991.89 8,910.83 700.46 -394.24 5,960,055.152 599,055.626 11.25 -691.66 10,329.57 91.60 126.01 8,991.84 8,910.78 683.22 -371.43 5,960,038.217 599,078.663 12.91 -663.28 10,360.99 91.75 122.83 8,990.92 8,909.86 665.47 -345.53 5,960,020.812 599,104.798 10.13 -631.97 10,395.40 92.09 120.07 8,989.77 8,908.71 647.53 -316.19 5,960,003.262 599,134.366 8.08 -597.59 10,421.35 92.58 117.79 8,988.71 8,907.65 634.99 -293.50 5,959,991.022 599,157.219 8.98 -571.671 11/1/2016 1:23:32PM Page 8 COMPASS 5000.1 Build 81B BP reA.9 p Final Survey Report BAKER HUGHES Company: North America - ALASKA- BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z -23B @ 81.06usft (Doyon 16) Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C Database: EDM RSK- Alaska PROD -ANCP1 Survey - MD Inc Azi (azimuth) TVD TVDSS NIS ENV Northing Easting DLeg V. Sec (usft) V) V) (usft) (usft) (usft) (usft) (usft) (usft) (*1100usft) (usft) 10,450.53 93.28 115.54 8,987.22 8,906.16 621.91 -267.46 5,959,978.292 599,183.428 8.07 -542.5E 10,479.88 92.76 111.16 8,985.67 8,904.61 610.30 -240.56 5,959,967.036 599,210.479 15.01 -513.48 10,515.49 93.69 111.83 8,983.67 8,902.61 597.27 -207.48 5,959,954.449 599,243.726 3.22 -478.32 10,541.53 93.17 114.93 8,982.11 8,901.05 586.96 -183.62 5,959,944.453 599,267.714 12.05 -452.50 10,580.06 94.30 120.01 8,979.60 8,898.54 569.23 -149.52 5,959,927.179 599,302.045 13.48 -414.10 10,610.75 95.04 125.00 8,977.10 8,896.04 552.80 -123.73 5,959,911.092 599,328.046 16.38 -383.55 10,640.39 93.75 128.48 8,974.83 8,893.77 535.12 -100.05 5,959,893.733 599,351.953 12.49 -354.21 10,669.73 93.68 133.19 8,972.93 8,891.87 515.98 -77.91 5,959,874.890 599,374.348 16.02 -325.46 10,700.75 90.21 135.83 8,971.87 8,890.81 494.25 -55.80 5,959,853.458 599,396.735 14.05 -295.45 10,730.21 88.40 140.37 8,972.23 8,891.17 472.33 -36.14 5,959,831.803 599,416.688 16.59 -267.46 10,759.99 88.74 139.47 8,972.97 8,891.91 449.56 -16.97 5,959,809.282 599,436.154 3.23 -239.47 10,790.07 90.92 137.00 8,973.06 8,892.00 427.12 3.06 5,959,787.118 599,456.480 10.95 -210.91 10,815.35 90.86 134.64 8,972.67 8,891.61 409.00 20.68 5,959,769.228 599,474.332 9.34 -186.59 10,846.91 90.46 132.03 8,972.31 8,891.25 387.34 43.63 5,959,747.880 599,497.566 8.37 -155.89 10,876.57 89.51 128.01 8,972.31 8,891.25 368.27 66.34 5,959,729.116 599,520.524 13.93 -126.69 10,905.78 91.08 125.48 8,972.16 8,891.10 350.80 89.74 5,959,711.955 599,544.154 10.19 -97.6 10,936.97 90.64 122.36 8,971.70 8,890.64 333.40 115.62 5,959,694.900 599,570.256 10.10 -66.57 10,966.62 92.21 120.33 8,970.96 8,889.90 317.98 140.93 5,959,679.820 599,595.768 8.65 -36.94 10,995.40 93.38 119.16 8,969.56 8,888.50 303.72 165.89 5,959,665.891 599,620.909 5.75 -8.20 11,025.11 93.60 116.10 8,967.75 8,886.69 289.97 192.16 5,959,652.490 599,647.357 10.31 21.43 11,055.99 95.29 112.24 8,965.35 8,884.29 277.36 220.24 5,959,640.260 599,675.600 13.61 52.051 11,085.85 93.17 109.83 6,963.15 8,882.09 266.68 248.03 5,959,629.943 599,703.527 10.73 81.46 11,115.92 92.40 106.09 8,961.69 8,880.63 257.42 276.60 5,959,621.064 599,732.210 12.68 110.83 11,145.77 93.44 101.21 8,960.17 8,879.11 250.39 305.56 5,959,614.415 599,761.258 16.69 139.43 11,175.73 93.23 97.34 8,958.42 8,877.36 245.57 335.07 5,959,609.987 599,790.829 12.91 167.39 11,212.70 93.87 92.41 8,956.13 8,875.07 242.43 371.82 5,959,607.338 599,827.618 13.42 200.79 11,256.11 91.60 86.45 8,954.06 8,873.00 242.86 415.16 5,959,608.345 599,870.941 14.68 238.11 11/1/2016 1:23.32PM Page 9 COMPASS 5000.1 Build 818 BP F/as p Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Project: Prudhoe Bay Site: PB Z Pad Well: Z-23 Wellbore: Z -23C Design: Z -23C Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Database: Well Z-23 Z -23B @ 81.06usft (Doyon 16) Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature EDM R5K - Alaska PROD - ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS N/S EM Northing Easting DLeg V. Sec (usft) V) V) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 11,280.61 91.94 82.89 8,953.30 8,872.24 245.14 439.54 5,959,610.941 599,895.285 14.59 258.08 11,310.35 92.09 77.31 8,952.26 8,871.20 250.25 468.80 5,959,616.436 599,924.480 18.76 280.8, 11,340.33 90.89 71.92 8,951.48 8,870.42 258.19 497.69 5,959,624.765 599,953.254 18.41 301.91 11,372.01 90.31 66.83 8,951.14 8,870.08 269.35 527.33 5,959,636.310 599,982.739 16.17 322.00 11,402.73 89.97 64.02 8,951.07 8,870.01 282.12 555.26 5,959,649.452 600,010.500 9.21 339.81 11,431.51 89.32 67.50 8,951.25 8,870.19 293.94 581.50 5,959,661.611 600,036.576 12.30 356.62 11,460.51 88.10 72.38 8,951.90 8,870.84 303.88 608.72 5,959,671.912 600,063.665 17.34 375.23 11,491.21 87.94 77.53 8,952.96 8,871.90 311.84 638.34 5,959,680.264 600,093.174 16.77 396.90 11,520.85 86.77 81.83 8,954.33 8,873.27 317.14 667.47 5,959,685.952 600,122.221 15.02 419.47 11,551.91 88.68 86.28 8,955.56 8,874.50 320.36 698.33 5,959,689.572 600,153.033 15.58 444.59 11,580.69 88.13 90.30 8,956.36 8,875.30 321.22 727.08 5,959,690.811 600,181.766 14.09 469.06 11,610.53 88.44 94.55 8,957.26 8,876.20 319.95 756.87 5,959,689.944 600,211.571 14.27 495.49 11,638.17 85.39 97.65 8,958.75 8,877.69 317.02 784.31 5,959,687.376 600,239.042 15.72 520.72 11,670.81 85.20 103.77 8,961.43 8,880.37 310.98 816.25 5,959,681.758 600,271.064 18.70 551.41 11,700.91 84.80 107.02 8,964.05 8,882.99 303.02 845.16 5,959,674.183 600,300.070 10.84 580.42 11,730.35 85.91 113.70 8,966.44 8,885.38 292.82 872.65 5,959,664.344 600,327.693 22.93 609.33 11,766.97 85.42 119.27 8,969.21 8,888.15 276.54 905.32 5,959,648.502 600,360.573 15.23 645.76 11,796.17 83.14 124.59 8,972.12 8,891.06 261.18 929.97 5,959,633.473 600,385.421 19.74 674.79 11,823.83 85.20 127.49 8,974.93 8,893.87 244.99 952.22 5,959,617.583 600,407.878 12.82 702.15 11,847.63 85.24 130.32 8,976.91 8,895.85 230.10 970.67 5,959,602.936 600,426.526 11.85 725.58 11,865.39 84.68 129.10 8,978.47 8,897.41 218.80 984.28 5,959,591.815 600,440.283 7.53 743.01 11,927.00 84.68 129.10 8,984.19 8,903.13 180.11 1,031.89 5,959,553.763 600,488.393 0.00 803.59 Projection to TD - 2-7/8" 111112016 1.23:32PM Page 10 COMPASS 5000.1 Build 818 by BP rias Final Survey Report BAKER HUGHES Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Z -23B @ 81.06usft (Doyon 16) Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C Database: EDM RSK- Alaska PROD -ANCP1 Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (usft) (usft) Name (in) (in) 11,927.00 2-7/8" 2.875 4.250 Design Annotations Measured Vertical Local Coordinates Depth Depth +N/ -S +E/ -W (usft) (usft) (usft) (usft) Comment 9,263.64 8,913.12 1,255.21 -236.16 TIP 9,279.00 8,917.02 1,267.90 -243.88 KOP/Top of Whipstock 9,300.01 8,921.27 1,284.91 -255.43 Interpolated Azimuth 9,330.47 8,924.82 1,307.89 -275.05 Interpolated Azimuth 9,360.24 8,926.66 1,327.86 -297.03 Interpolated Azimuth 11,927.00 8,984.19 180.11 1,031.89 Projection to TD Prepared By: Yosha Ragbirsingh Survey Manager Baker Hughes 11/1/2016 1:23:32PM Page 11 COMPASS 5000.1 Build 81B THE STATE of ALASKA GOVERNOR BILL WALKER Sean McLaughlin Drilling Supervisor BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Alaska Oil and Gas 333 West Seventh Avenue Anchorage, Alaska 99501-3572 Main: 907.279.1433 Fax: 907.276.7542 www.aogcc.oloska.gov Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU Z -23C BP Exploration (Alaska), Inc. Permit to Drill Number: 216-081 Surface Location: 720' FNL, 1739' FWL, SEC. 19, TI IN, R12E, UM Bottomhole Location: 523' FNL, 3064' FWL, SEC. 19, TI IN, RI 2E, UM Dear Mr. McLaughlin: Enclosed is the approved application for permit to re -drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the AOGCC 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 AOGCC 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 an AOGCC order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, Cathy . Foerster Chair DATED this day of July, 2016. STATE OF ALASKA '-ASKA OIL AND GAS CONSERVATION COMMIS PERMIT TO DRILL 20 AAC 25.005 RECEIVED JUN 0 7 2016 1 a. Type of Work:1 b. Proposed Well Class: Exploratory - Gas E]Service - WAG ❑ Service - Disp 13 1 c. Specify Kell ell is proposed for: Drill E3Lateral ❑ Stratigraphic Test ❑ Development - Oil 0 ' Service - Winj ❑ Single Zone 0 . Coalbed Gas ❑ Gas Hydrates ❑ Redrill 0 . Reentry ❑ Exploratory - Oil ❑ Development - Gas ❑ Service - Supply ❑ Multiple Zone ❑ Geothermal ❑ Shale Gas ❑ 2. Operator Name: 5. Bond Blanket 173, Single Well ❑ 11 . Well Name and Number: BP Exploration (Alaska), Inc Bond No. 29S105380 PBU Z -23C 3 Address: 6. Proposed Depth: 12. Field/Pool(s): P.O. Box 196612 Anchorage, AK 99519-6612 MD: 12249'' TVD: 8967'ss • PRUDHOE BAY, PRUDHOE OIL 4a. Location of Well (Governmental Section): 7. Property Designation (Lease Number): ADL 028262 Surface: 720' FNL, 1739' FWL, Sec. 19, T11 N, R12E, UM • 8 Land Use Permit: 13. Approximate spud date: Top of Productive Horizon: 458' FSL, 1545' FWL, Sec. 18, T1 1N, R12E, UM 85-009 November 15, 2016 9. Acres in Property: 2480 14. Distance to Nearest Property: Total Depth: 523' FNL, 3064' FWL, Sec. 19, T1 1N, R12E, UM 6125' 4b. Location of Well (State Base Plane Coordinates - NAD 27): 10. KB Elevation above MSL: 81.06• feet 15. Distance to Nearest Well Open to Same Pool: Surface: x- 599459 • y- 5959360 • Zone - ASP 4 GL Elevation above MSL: 54.04 - feet 600' 16. Deviated wells: Kickoff Depth: 9280 feet 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Maximum Hole Angle: 96 degrees Downhole: 3659 Surface: 2779 - 18. Casing Program: Specifications Top - Setting Depth - Bottom Cement Quantity, c.f. or sacks Hole Casinq Weiqht Grade Couolina Len th MD I TVD MD I TVD(including stage data 4-1/4" 3-1/2"x3-1/4" 9.2#/6.4# 13Cr85 STL/TCII 3199' 9050' 8727'ss 12249' 8967'ss 174 sx Class 'G' x2-7/8" /6.2# /HYD 11 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re -Entry Operations) Total Depth MD (ft): Total Depth TVD (ft): 1 Plugs (measured): Effect. Depth MD (ft): Effect. Depth TVD (ft): Junk (measured): 1 10550 9050 None 10461 9001 None Casing Length Size Cement Volume MD TVD Conductor/Structural 80 20" 28-108 28-108 Surface 2619 13-3/8" 3684 cu ft Permafrost 27-2647 27-2647 Intermediate 6693 9-5/8" 1894 cu ft Class 'G' 25-6718 25-6699 Liner 2348 7" 488 cu ft Class 'G' 6565-8913 6552-8707 Liner 1801 4-1/2" 281 cu ft Class 'G' 8747-10548 8567-9049 Perforation Depth MD (ft): 9175-10460 Perforation Depth TVD (ft): 8880-9001 20. Attachments Property Plat ❑ BOP Sketch 0 Drilling Program 0 Time v. Depth Plot ❑ Shallow Hazard Analysis ❑ Diverter Sketch ❑ Seabed Report ❑ Drilling Fluid Program 0 20 AAC 25.050 requirements 0 21. Verbal Approval: Commission Representative: Date 22. 1 hereby certify that the foregoing is true and the procedure approved herein will not be deviated Contact Leemhuis, Jacob from without prior written approval. Email Jacob.Leemhuis@bp.com Printed Name SeaR McLaughlin Title Drilling Supervisor Signature fU _ ALL u GdLt N Phone +1 907 564 4387 Date Commission Use Only Permit to Drill Number: —�v API Number: 50- 029-21950-03-00 Permit Approval Date: See cover letter for other requirements: Conditions of approval : If box is checked, well may not be used to explore for, test, or produce coalbed methane, gas hydrates, or gas contained in shales: [a/ Othe — �SOO IpS► (ZnP TVI>r Samples req'd: Yes ❑ No 52' Mud log req'd: Yes ❑/ No LST 2Sc H2S measures 2CVGUi��S; Yes Ctd No ❑ Directional svy req'd: Yes M No ❑ F's� Yt.�ail�\Atzj (� Spacing exception req'd: Yes ❑ No 5 Inclination -only svy req'd: Yes ❑ No 12 L rz �P` f pL iapti �(�fi�1� Post initial MIT Yes ❑ ❑ uL Com- injection req'd: No 2.G AAC. Approved by: ` COMMISSIONER APPROVED BY THE COMMISSION Date: ORIGINAL Form 10-401 Revised 11/2015 This permit is valid for 24 months from the date of approval (20 AAC 25.005(g)) Submit Form and Lot) +�/ /, Attachments in Duplicate To: Alaska Oil & Gas Conservation Commission From: Jacob Leemhuis iD by CTD Engineer Date: June 1, 2016 Re: Z -23C Permit to Drill Request Approval is requested for a permit to drill a CTD sidetrack slant producer from well Z -23B by the Nordic 2 Coiled Tubing Drilling rig on or around November 15, 2016. The Z -23C sidetrack will be a single string exit from the existing 4-1/2" liner. A monobore whipstock will be set on top of a CIBP that was set pre -rig. Z -23C is designed to kick out in the 45P sands (underneath the 45N shale). The well will drill down through the 45P sands and land (90 degree Inc) after crossing fault #1. Once structure is confirmed, the well will undulate within the 46P sands with TD being called once the OWC is logged or 8,966' TVDss is reached. Z -23C will be completed with a 3-1/4" x 2-7/8" 13Cr-85 solid liner, cemented in place and selectively perforated. Rig Work (scheduled to begin November 15, 2016) 1. MIRU and test BOPE 250 psi low and 3,500 psi high (MASP 2,779 psi). 2. Set 4-1/2" Monobore Whipstock 3. Mill 3.80" window and 10' of rathole. 4. Drill Build: 4.25" OH, —324' 35 deg DLS planned). 5. Drill Lateral: 4.25" OH, 2,615' 12 deg DLS planned). 6. Run 3-1/4" x 2-7/8" 13Cr-85 liner leaving TOL at 9,050' MD. 7. Pump primarycement job: 36 bbls, 15.3 ppg Class G, TOC at 9,050' MD. ti 8. Perform cleanout run if needed 9. Perform liner lap test*. 10. Perforate 1,600' 11. Freeze protect well to a min 2,100' TVDss. 12. Close in tree, RDMO. *Approved alternative plug placement per 20 AAC 25.112 (i) Post -Rig Work 1. V Pull TWC. Tree work as necessary 2. S Set live GLVs. Set LTP (if necessary) 3. F Pressure Test LTP (if necessary) 4. T ASK flowback 5. F SIT *Approved alternative plug placement per 20 AAC 25.112 (i) Mud Program: • Milling/drilling: 8.4 - 9.5 ppg solids free fluid for milling window and drilling (8.4 ppg provides 182 psi over -balance) Disposal: • All Class 1& II non -hazardous and RCRA-exempt drilling and completion fluids will go to GNI at DS 4 or Pad 3 at DS 6. • Fluids > 1% hydrocarbons or flammables must go to Pad 3. • Fluids >15% solids by volume must go to GNI. • Fluids with solids that will not pass through %" screen must go to GNI. • Fluids with pH > 11 must go to GNI. Hole Size: • 4.25" from 9,280' MD to 12,249' MD Liner Program: • 3-1/2" 9.2# 13Cr-85, STL Solid from 9,050' MD to —9,280' MD • 3-1/4" 6.4# 13Cr-85, TCII Solid from 9,280' MD to 10,000' MD • 2-7/8" 6.2# 13Cr-85, HYD511 Solid from —10,000' MD to 12,249' MD • 36 bbls of 15.3 ppg cement will be used to cement the liner in place. (TOC at 9,050' MD) • The primary barrier for this operation: minimum EMW of 8.4 ppg (provides 182 psi overbalance) • A cross over shall be made up to a safety joint including a TIW valve for all tubulars ran in hole. Well Control: • BOP diagram is attached. • Pipe rams, blind rams, and the CT packoff will be pressure tested to 250 psi low and 3,500 psi high. • The annular preventer will be tested to 250 psi low and 3,500 psi high. Directional: • See attached directional plan. Maximum planned hole angle is 96'. • Magnetic and inclination surveys will be taken every 30 ft. No gyro will be run. • Distance to nearest property line: 6,125' • Distance to nearest well within pool: 600' Logging: • MWD directional, gamma ray, and resistivity will be run over all of the open hole section. Anti -Collision Failures: • Z -23C passes BP Anti -Collision criteria. Hazards: r` • Z -Pad is considered a H2S pad • Most recent H2S level on Z -Pad was at Z -15A with 44 ppm recorded on 02/26/2016 • Lost circulation potential in Z23C is considered to be low (1 mapped fault in target location) Reservoir Pressure: F • The reservoir pressure on Z -23C is expected to be 3,659 psi at 8,795' TVDss. (8.0 ppg EMW) • Maximum expected surface pressure with a full column of gas (0.10 psi/ft) to surface is 2,779 psi. • An EMW of 8.4 ppg will provide a 182 psi overbalance to the reservoir. Jacob Leemhuis CC: Well File CTD Engineer Joe Lastufka Jacob.Leemhuis@bp.com 907-564-4989 TREE = 4" CM/ WELLHEAD= FMC ACTUATOR= BAKER KB. ELEV = 91.74' BF. ELEV = 55.36' KOP = 3100' Max Angle = 93 @ 9799' Datum MD = 9.197' Datum TVD = 8800' SS 13-3/8" CSG, 68#, L-80, ID = 12.415" 1--1 2657' Minimum ID = 3.725" @ 8755' 4-1/2" HES XN NIPPLE MECHANICAL WHIPSTOCK (08/25104) 1-� 6718' 19-5/8" HES EZSV (08/24/04) 6740' 9-5/8" CSG. 47#, L-80, ID = 8.681" 7472' SEE PREVIOUS SCHEMATIC FOR WELL Z -23A & Z-23AL1 TBG & LNR DETAILS PERFORATION SUMMARY REF LOG: MWD VISION RES LOG ON 08/22/04 ANGLE AT TOP PERF: 63° @ 9175' Note: Refer to Production DB for historical perf data SIZE SPF I INTERVAL Opn/Sqz DATE 2-7/8" 4 9175-9185 O 06/14/11 2-7/8" 4 9205-9225 O 06/16/11 2-7/8" 4 9275-9305 O 06/16/11 2-7/8" 4 9405-9435 O 06/15/11 2-7/8" 4 9640-9660 O 06/15/11 2-7/8" 4 9680-9710 O 06/15/11 2-112" 4 9745- 10160 O 09/08/04 2-1/2" 4 10224- 10254 O 09/08/04 2-1/2" 4 10292 - 10390 O 09/08/04 2-1/2" 4 10400- 10436 O 09/08/04 2-112" 4 10454 - 10460 O 09/08/04 SArt7Y NOTES: 700@9236' ***CHROME TBG*** 2205' 1-14-1/2" HES X NIP, ID = 3.813" C!1_��I�rt�ih_nI�T79�'►1 ST MD TVD DEV TYPE VLV LATCH PORT DATE 6 3095 3095 1 MMG DOME RK 16 09/24/04 5 4995 4994 1 MMG DOME RK 16 09/24/04 4 6386 6379 13 MMG DOME RK 16 09/24/04 3 7451 7373 21 KBG2 DOME BK 16 09/24/04 2 8222 8083 22 KBG2 SO BK 22 08/02111 1 1 8580 8417 23 1 KBG21 DMY I BK 1 0 08/02/11 6565' —19-5/8" X 7" BKR ZXP LTP w /TIEBK SLV, ID = 6.28" 0 6579' 9-518" X 7" BKR HMC LNR HNGR w lR NIP, ID = 6.18" MILLOUT WINDOW (Z -23B) 6718' - 6734' 8690' 4-1/2' HES—X--NI—P,—ID =-3.8-13- 1 $710' 7" X 4-1 r'2" BKR S-3 PKR, ID = 3.875" 8734' 4-1/2" HES X NIP.. ID = 3.813" $747' 7" X 5" BKR ZXP LNR TOP PKR w /TIEBK SLV, ID = 4.360" 8755' 4-1/2" HES XN NIP, ID = 3.725' V8766HNGR w / R NIP, ID N 4"X5"BKRH CL- .25" ' 4-1%2" WLEG IID = 3.9586'S" X 4-112" XO ID = 3.99" 9154' 4-1 i2" MARKER 4-1/2" TBG, 12.6#, 13CRVAM, I 8767' IT 4-1/2" TAG .0152 bpf, ID = 3.958" 7" LNR, 26#, L-80 BTC -M, 0383 bpf, ID = 6.276" 1 8913' 1 PBTD 10461' 4-1/2" LNR, 12.6#, L-80 BTC -M, .0152 bpf, ID = 3.958" 10548' DATE REV BY COMMENTS DATE REV BY COMMENTS 10/18/89 FH ORIGINAL COMPLETION 06/26111 SJW/ PJC ADPERFS (0 611 5-1 7 /1 1) 05/05/95 UNDER SIDETRACK (Z -23A) 08/15/11 TAR/ PJC GLV C/O (8/2/11) 07/08/03 DAV/KK SDTRCK ATTEMPT (Z-23AL1) 09/19/04 D16 SIDETRACK (Z -23B) 09/23/04 CAO/PJC I GLV C/O 102/27/061 JLJ/TLH I DRLG DRAFT CORRECTIONS PRUDHOE BAY UNIT WELL: Z -23B PERMIT No: 2041080 API No: 50-029-21950-02 SEC 19, TI IN, R1 2E, 4560' NSL & 3214' WEL BP Exploration (Alaska) TREE = 4" CNV VVELLHEAD = FMC ACTUATOR = BAKER KB. ELEV = 91.74' BF. ELEV = 55.36 KOP= 3100' Max Angie = 93 @ 9799' __ Datum MD– 9,19T Datum TVD = 8800' SS 13-3/8- CSG, 68#, L-80, D = 12.415' 265T Minimum ID = 3.726" @ 8766' 4-1/2" HES XN NIPPLE Z -23C SAhtTY NOTES: 70° @ 9236' —CHROME TBG"'* 2205' 1—{ 4-1/2- FES X NIP, D = 3.813" GAS LIFT MANDRELS ST' MD TVD DEV TYPE I VLV LATCH PORT DATE 6 3095 3095 1 MMG DOME RK 16 09/24/04 5 1 4995 4994 1 MMG DOME RK 16 09/24/04 4 6386 6379 13 MMG DOME RK 16 09/24/04 3 7451 7373 21 KBG2 DOME BK 16 09/24/04 2 8222 8083 22 KBG2 SO BK 22 08/02/11 i 8580 8417 23 KBG2 DMY BK 0 08/02/11 PERFORATION SUMMARY REF LOG: MWD VISION RES LOG ON 08/22104 ANGLE AT TOP PERF: 63" @ 9175' Note: Refer to Production DB for historical perf data 6565' 9-5/8" X 7" BKR ZXP LTP w 1TEBK SLV, D = 6.28" SPF 6579' 9-5/8" X 7" BKR HMC LNR HNGR w /R NP, D = 6.18" OpNSgz MILLOUT WINDOW (Z-2313) 6718' - 3734' MECHANICAL WFPSTOCK (08/25/04) 6718' 4 9175-9185 8690' 4-1 /2" HES X NP, D = 3.813' 1 06114/11 8710' 7" X 4 112" BKR S 3 PKR ID = 3.875" 9-5/8" FES EZSV (08!24!04) 6740' 8734' 4-1/2" FES X NP, D= 3.813- l O 8747' 7' X 5" BKR ZXP LNR TOP PKR 9-5/8" CSG, 47#, L-80, D = 8.681' 7472' w /TEBK SLV, D = 4.360" 9275-9305 O SEE P R E V %J U S 2-7/8" SCHEMATIC FOR 8766' 7' X 5" BKR HMC LNR W ELL Z 23A & Z 23AL1M :aXN ` HNGRw/RNIP, D=4.25_ TBG & LNR DETAILS 876T 4-1/2" WLEG, D = 3.958" Ems 8776'5- X 4-1/2" XO 7" LNR, 26#, L-80 BTC -M, 8913' D = 3.99" 0383 bpf, D = 6.276' 9680-9710 PERFORATION SUMMARY REF LOG: MWD VISION RES LOG ON 08/22104 ANGLE AT TOP PERF: 63" @ 9175' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL OpNSgz DATE 2-7/8" 4 9175-9185 O 1 06114/11 2-7/8' 4 9205-9225 O 06/16/11 2-7/8" 4 9275-9305 O 06/16/11 2-7/8" 4 9405-9435 O 06/15/11 2-7/8' 4 9640-9660 O 06/15/11 2-7/8' 4 9680-9710 O 06/15/11 2-1/2" 4 9745-10160 O 09/08/04 2-112" 4 10224 -10254 O 09/08/04 2-1/2" 4 10292 -10390 O 09/08/04 2-1/2' 4 10400 -10436 O 09/08/04 2-1/2" 4 10454 -10460 O 09/08/04 9154' 4-1/2" MARKER 4-1/2" TBG, 12.6#, 13CR VAM, 8767' JT w /RA TAG .0152 bpf, D= 3.958" TJ L- 9,0 S 0 M 3 -1/21,x3 -1/41'X0 abovewi:dcw y &77°iac@ window 4-1/2"BakerMonobomwhjDstDck@ 9,280MDJ /I 35°/100'BUR TD @ 12,249'MD C]BP 9,310'M 3-1/411x2-7/$1113Cr-85 Lherto TD PBTD 4-1/2" LNR, 12.6#, L-80 BTC -M, _0152 bpf, D -73.9W 10548/' DATE REV BY COMMENTS DATE REV BY COMMENTS 10/18/89 FH ORIGINAL COMPLETION 06/26/11 SJW/ PJC ADPERFS (06/15-17/11) 05/05195 UNDER SIDETRACK (Z -23A) 08/15111 TAR/ PJC GLV C/O (8/2/11) 07/08/03 DAV/KK SDTRCK ATTEMPT (Z-23AL1) 09/19104 616 SIDETRACK (Z -23B) 09/23/04 CAO/PJC GLV C/O 02/27/06 1 JLJ/TLH DRLG DRAFT CORRECTIONS PRUDHOE BAY UNIT WELL: Z 23B PERMIT No: 2041080 API No: 50-029-21950-02 SEC 19, T11N, R12E, 4560' NSL & 3214' WEL BP Exploration (Alaska) North America - ALASKA - BP Prudhoe Bay PB Z Pad Z-23 Z -23C Plan: Z -23C WP02 BP Coil Tubing Report 24 May, 2016 BP BP Coil Tubing Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Mean Sea Level Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True , Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z-23CWP02 Database: EDM RSK- Alaska PROD-ANCP1 Project Prudhoe Bay, GPB, PRUDHOE BAY 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 PB Z Pad, TR -11-12 Site Position: Northing: From: Map Easting: Position Uncertainty: 0.00 usft Slot Radius: Well Z-23 Well Position +N/ -S 0.00 usft Northing: +E/ -W 0.00 usft Easting: Position Uncertainty 0.00 usft Wellhead Elevation: Wellbore Z -23C Magnetics Model Name Sample Date Declination 1°) BGGM2015 11/1/2016 18.47 Design Z -23C WP02 Audit Notes: Version: Phase: PLAN Vertical Section: Depth From (TVD) +N/ -S (usft) (usft) -55.36 0.00 5,957,230.170 usft 601,304.820 usft 0.000 in 5,959,360.030 usft 599,459.070 usft 55.36 usft Latitude: Longitude: Grid Convergence: Latitude: Longitude: Ground Level: Dip Angle Field Strength 1°) (nT) 80.99 57,503 Tie On Depth: 9,172.00 +E/ -W Direction (usft) (I 0.00 120.00 70° 17'33.051 N 149° 10'47.365 W 0.77 ° 70° 17'54.240 N 149° 11'40.333 W 54.04 usft 5/24/2016 2,38:03AM Page 2 COMPASS 5000.1 Build 81B Company: North America - ALASKA- BP Well Z-23 Project: Prudhoe Bay Mean Sea Level Site: PB Z Pad Z -23B @ 81.06usft (Doyon 16) Well: Z-23 True Wellbore: Z -23C Minimum Curvature Design: Z -23C WP02 EDM R5K -Alaska PROD - ANCP1 Survey Tool Program Date 5/24/2016 1°) From To -195.25 (usft) (usft) Survey (Wellbore) 599,248.223 100.02 6,700.06 Z -23A Srvy 1 GYD-GC MS (Z -23A) 6,718.00 6,748.10 Z -23B Srvy 1 Inc+Trend (Z -23B) 6,809.92 9,172.00 Z -23B Srvy 2 MWD+IFR+MS (Z -23B) 9,172.00 12,249.00 Z -23C WP02 (Z -23C) -206.77 Planned Survey 599,236.410 MD Inc Azi TVDSS (usft) 1°► 1°► (usft) 9,172.00 62.41 333.74 8,797.87 Z -23B Actual Survey 13.61 9,200.00 65.82 331.86 8,810.09 9,205.78 66.53 331.48 8,812.42 Z -23B Actual Survey 599,220.013 9,235.75 70.17 330.51 8,823.48 Z -23B Actual Survey 1,255.21 9,263.64 73.99 328.98 8,832.06 Z-238 Actual Survey TIP 14.66 9,280.00 76.74 328.41 8,836.19 KOP -244.38 9,300.00 78.30 327.49 8,840.51 End 9deg/100ft -846.01 9,330.00 86.41 320.75 8,844.51 7 5,960,641.711 9,334.00 87.11 319.54 8,844.73 8 -30.00 9,400.00 84.99 296.48 8,849.35 9,500.00 83.38 261.33 8,859.81 9,554.00 83.51 242.30 8,866.03 9 1,312.39 9,600.00 83.76 226.10 8,871.16 BP BP Coil Tubing Report Local Co-ordinate Reference: Well Z-23 TVD Reference: Mean Sea Level MD Reference: Z -23B @ 81.06usft (Doyon 16) North Reference: True Survey Calculation Method: Minimum Curvature Database: EDM R5K -Alaska PROD - ANCP1 Tool Name Description GYD-GC-MS Gyrodata gyrocompassing m/s INC+TREND Inclinometer + known azi trend MWD+IFR+MS-WOCA MWD + IFR + Multi Station W/O Crustal MWD MWD - Standard N/S EM Northing Easting DLeg V. Sec TFace (usft) (usft) (usft) (usft) (°1100usft) (usft) 1°) 1,180.88 -195.25 5,960,538.120 599,248.223 0.00 -759.54 0.00 1,203.28 -206.77 5,960,560.361 599,236.410 13.61 -780.71 -26.83 1,207.93 -209.28 5,960,564.981 599,233.840 13.61 -785.21 -26.01 1,232.29 -222.79 5,960,589.154 599,220.013 12.51 -809.09 -14.09 1,255.21 -236.16 5,960,611.889 599,206.341 14.66 -832.12 -21.10 1,268.73 -244.38 5,960,625.301 599,197.939 17.14 -846.01 -11.41 1,285.28 -254.75 5,960,641.711 599,187.360 9.00 -863.26 -30.00 1,309.33 -272.16 5,960,665.524 599,169.630 35.00 -890.36 -40.00 1,312.39 -274.72 5,960,668.555 599,167.030 35.00 -894.11 -60.00 1,352.67 -326.23 5,960,708.145 599,114.993 35.00 -958.86 -96.00 1,367.86 -422.94 5,960,722.054 599,018.100 35.00 -1,050.21 -94.39 1,351.20 -473.67 5,960,704.720 598,967.603 35.00 -1,085.81 -90.71 1,324.55 -510.62 5,960,677.585 598,931.009 35.00 -1,104.48 -90.00 5/24/2016 2:38:03AM Page 3 COMPASS 5000.1 Build 818 BP BP Coil Tubing Report Company: North America -ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Mean Sea Level Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C WP02 Database: EDM R5K-Alaska PROD -ANCP1 Planned Survey MD Inc Azi TVDSS N/S EM Northing Easting DLeg V. Sec TFace (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) (°) 9,634.00 84.27 214.15 8,874.72 1,298.74 -532.37 5,960,651.492 598,909.604 35.00 -1.110.42 -88.19 End 35deg1100ft 9,700.00 84.81 206.21 8,881.01 1,241.99 -565.37 5,960,594.316 598,877.362 12.00 -1,110.62 -86.50 9,800.00 85.80 194.21 8,889.23 1,148.63 -599.73 5,960,500.521 598,844.244 12.00 -1,093.70 -85.74 9,884.00 86.78 184.16 8,894.67 1,065.99 -613.09 5,960,417.716 598,831.982 12.00 -1,063.94 -84.76 11 9,900.00 86.79 182.23 8,895.57 1,050.04 -613.98 5,960,401.758 598,831.303 12.00 -1,056.74 -90.00 10,000.00 86.88 170.22 8,901.11 950.59 -607.42 5,960,302.416 598,839.179 12.00 -1,001.34 -89.89 10,064.00 87.01 162.53 8,904.53 888.53 -592.37 5,960,240.563 598,855.045 12.00 -957.27 -89.23 12 10,100.00 87.40 158.22 8,906.29 654.67 -580.30 5,960,206.869 598,867.566 12.00 -929.89 -85.00 10,200.00 88.53 146.27 8,909.85 766.40 -533.83 5,960,119.227 598,915.189 12.00 -845.51 -84.791 10,300.00 89.74 134.32 8,911.37 689.61 -470.07 5,960,043.301 598,979.955 12.00 -751.90 -84.36 10,364.00 90.51 126.68 8,911.23 648.08 -421.44 5,960,002.415 599,029.123 12.00 -689.02 -84.18 13 10,400.00 92.27 122.73 8,910.35 627.59 -391.87 5,959,982.322 599,058.967 12.00 -653.16 -66.00 10,484.00 96.31 113.47 8,904.06 588.17 -318.08 5,959,943.884 599,133.260 12.00 -569.55 -66.101 14 10,500.00 96.30 115.40 8,902.30 581.59 -303.60 5,959,937.499 599,147.823 12.00 -553.72 90.00 10,600.00 96.12 127.47 8,891.45 529.84 -218.94 5,959,886.875 599,233.152 12.00 454.53 90.21 10,634.00 96.00 131.57 8,887.86 508.32 -192.87 5,959,865.713 599,259.507 12.00 -421.19 91.52 15 10,700.00 94.70 123.72 8,881.69 468.22 -140.88 5,959,826.306 599,312.018 12.00 -356.12 -99.00 10,800.00 92.59 111.89 8,875.31 421.77 -52.76 5,959,781.024 599,400.734 12.00 -256.58 -99.73 10,884.00 90.73 101.98 8,872.87 397.35 27.46 5,959,757.672 599,481.266 12.00 -174.89 -100.49 16 10,900.00 90.73 103.90 8,872.67 393.77 43.05 5,959,754.297 599,496.902 12.00 -159.60 90.00 11,000.00 90.70 115.90 8,871.42 359.80 136.90 5,959,721.577 599,591.187 12.00 -61.34 90.021 5/24/2016 2:38:03AM Page 4 COMPASS 5000.1 Build 818 BP BP Coil Tubing Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Mean Sea Level Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Well: Z-23 North Reference: True Wellbore: Z -23C Survey Calculation Method: Minimum Curvature Design: Z -23C WP02 Database: EDM R5K-Alaska PROD -ANCP1 Planned Survey MD Inc Azi TVDSS NIS E/W Northing Easting DLeg V. Sec TFace (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) (°) 11,074.00 90.67 124.78 8,870.53 322.46 200.70 5,959,685.091 599,655.468 12.00 12.58 90.17 17 11,100.00 90.94 121.67 8,870.16 308.22 222.45 5,959,671.138 599,677.397 12.00 38.53 85.00 11,200.00 91.95 109.71 8,867.63 264.96 312.37 5,959,629.079 599,767.876 12.00 138.04 -85.04 11,300.00 92.87 97.73 8,863.41 241.30 409.25 5,959,606.707 599,865.053 12.00 233.77 -85.35 11,324.00 93.08 94.86 8,862.16 238.68 433.07 5,959,604.396 599,888.904 12.00 255.71 -85.85 18 11,400.00 93.04 85.72 8,858.10 238.29 508.88 5,959,605.015 599,964.706 12.00 321.56 -90.00 11,469.00 92.94 77.43 8,854.50 248.38 576.98 5,959,615.998 600,032.664 12.00 375.49 -90.491 19 11,500.00 92.93 81.16 8,852.91 254.13 607.40 5,959,622.149 600,062.997 12.00 398.96 90.001 11,600.00 92.83 93.17 8,847.87 259.06 706.97 5,959,628.396 600,162.483 12.00 482.72 90.19 11,700.00 92.60 105.18 8,843.12 243.15 805.39 5,959,613.798 600,261.103 12.00 575.91 90.80 11,739.00 92.48 109.87 8,841.39 231.42 842.54 5,959,602.562 600,298.395 12.00 613.95 91.37 20 11,800.00 86.14 106.21 8,842.12 212.55 900.49 5,959,584.458 600,356.593 12.00 673.58 -150.00 11,900.00 75.79 100.04 8,857.82 190.09 996.48 5,959,563.276 600,452.857 12.00 767.93 -149.96 11,949.00 70.78 96.84 8,871.91 183.19 1,042.87 5,959,556.990 600,499.337 12.00 811.56 -148.98 21 12,000.00 70.89 90.36 8,888.67 180.17 1,090.92 5,959,554.606 600,547.415 12.00 854.68 -90.00 12,099.00 71.75 77.85 8,920.49 189.81 1,183.98 5,959,565.474 600,640.334 12.00 930.46 -87.87 22 12,100.00 71.75 77.97 8,920.80 190.01 1,184.91 5,959,565.685 600,641.260 12.00 931.16 90.00 12,200.00 72.17 90.59 8,951.88 199.45 1,279.30 5,959,576.371 600,735.503 12.00 1,008.18 89.961 12,249.00 72.67 96.74 8,966.69 • 196.46 1,325.89 5,959,574.002 600,782.125 12.00 1,050.02 86.04 TD at 12249.00 5/24/2016 2:38:03AM Page 5 COMPASS 5000 1 Build 81B i Project: Prudhoe Bay Site: PB Z Pad Well: Z-23 Wellbore: Z -23C ,Obp L Plan: Z -23C WP02 Plus SWft MD (Z -232-23C) AxvnMls mine NaM Magnetic Nonh:te.47 Magnetic Feu WELLBORE DETAILS: Z -23C REFERENCEINFORM4TION 7-23C Coordinate (RE) Reference. Well Z-23, True North SY.O: 575033sn 65°° Venwi(TVD)Refer— Mean S.Level Dipk,gle:11.19 We:tvlrzot parent Wellbore: Z-236 Secfion(VS)Referer�ce. Slot-(O.00N, O.00E) nmeet eccNIDn Tie On MD: 9172.00 Mee—dDepth Reference. Z-23B@81.06.ft(Duyon16) 0 Z-1002-10070 Celouhtion Mathgd: Minimum Curvature 5960370 59fi0285 Vi 4500 x5960200 m 5960115 Z 35 5960030 5959945 5959860- gp00 5959775 5959690 Z-05/Z-05APB1 5959605 Z-t?5/Z-05 5959520 4/05/Z-05Ao Z -33/Z -33A 3500 h 5959435 o Z -33/Z-33 ( 5959350 Mean Sea Level 5000 Z-15275 65°° SOO r5960540 Easting (85 ustVin) 0 Z-1002-10070 Z-15/Z,15AP12 6'`PO 00 5960455 m A + m N m O m m V m O m m m m N O A + m o N O o m m m N + N m N N (n O O O m m m m V m to O A m O O O + O N fi A N 000 6gS> _ �.., �, .�. _ ��... _. _ .., m _ _. - - ____P v'. �. u'.,. ._S u m-Z+116/Z m o —_r59 65 00 Z -32/Z 32C, `, Z 28/Z-28 ��-Z-21/Z-21 Z -19/Z-1-9 /.i ` Z -23/Z-23 116 n - �09y, Z 61050 5960965{._.._.. n' -2. A Z'-__. 2-29 Z-272 7 "' Z-19/. 1f Z -24/Z-24 11i6/Z-116PB1 -14/Z-146 P+e 50®} 00 - 11 Z-2 -22B - Z -211Z -21A - -13/Z 3A 90 S00 -5960965 Z-32/Z-32BP82 ,ii SS 00 �55550p0 -11 L-912PB2 Z -114/Z-11 Z-13! 13 Z -25/Z-2 00 Z-116/Z-116PB2 Z-118/Plan #I 3b Z-11 59160880 1. Z- 00 9 00 O Z -69/Z-6 Z -26/Z -26A 5 0 Z-32/Z=32BP81 Z r 0 112/Z-11 ° Z-13/Z-13AP 00 o Z -26/Z-26 y 5959945 5960880 59607951 -32/Z-32 ➢ , 5° 50 % p 0 2-142-14 vr4 �5959860 4� Z -101/Z -10""i p0 0 5 Z -23/Z -23A S 500 4 0 Z -14/Z -141V r5960795 sss9n D 5° 7 5000 9167 1100, O OOO N 80 00 N 5959690 Z -23/Z-236 � N ry O O 5960710 5959605 00 35 9000 0 50 3500 5960625 Z -32/Z +32BL7 , -5959520 q00 3000 S00 ��' 5960625 Z -32/Z - 32A Z -20/Z-20 -5959435 /Z-10 0 0'. Z -322-32B 5000 0 -1. q-1 5960370 59fi0285 Vi 4500 x5960200 m 5960115 Z 35 5960030 5959945 5959860- gp00 5959775 5959690 Z-05/Z-05APB1 5959605 Z-t?5/Z-05 5959520 4/05/Z-05Ao Z -33/Z -33A 3500 h 5959435 o Z -33/Z-33 ( 5959350 Mean Sea Level 5000 Z-15275 65°° SOO r5960540 0 Z-1002-10070 Z-15/Z,15AP12 6'`PO 00 5960455 Z -15/Z -(5A 000 6gS> Z-15/Z-15APB1 t 59fi0370 65 00 O sssazas o `'600 8pp0 0 P+e 50®} 00 500 Z-210/Z-210PB1 5960200 � l 2°0° p00 2 0 �0 SS 00 � Z -210/Z-210 �� 5960115 �1 95 � Ss OD 3 4 00 9 00 O 5960030 0 5 0 0 o y 5959945 7500 4 % p 0 vr4 �5959860 900° 0 � U 5959775 4 0 2000 5 D 7 0 > 1100, O OOO N N 5959690 0 N ry O O 5959605 00 0 3500 , -5959520 65p o 4 0 � mo `SO 0 -5048 50 2 Z -20/Z-20 -5959435 /Z-10 0 2 X % 00 0 -1. q-1 959350 N Easting (85 usft/in) North America - ALASKA - BP Prudhoe Bay PB Z Pad Z-23 Z -23C Z -23C WP02 Plus 500ft MD Anticollision Summary Report 24 May, 2016 Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00usft Reference Well: Z-23 Well Error: 0.00usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 Plus 500ft MD BP Anticollision Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Reference Z -23C WP02 Plus 500ft MD Filter type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference Interpolation Method: MD Interval 25.00usft Error Model: ISCWSA Depth Range: 9,172.00 to 12,749.00usft Scan Method: Tray. Cylinder North Results Limited by: Maximum center -center distance of 200.00usft Error Surface: Elliptical Conic Survey Tool Program Date 5/24/2016 From To (usft) (usft) Survey (Wellbore) 100.02 6,700.06 Z -23A Srvy 1 GYD-GC MS (Z -23A) 6,718.00 6,748.10 Z -23B Srvy 1 Inc+Trend (Z -23B) 6,809.92 9,172.00 Z -23B Srvy 2 MWD+IFR+MS (Z -23B) 9,172.00 12,749.00 Z -23C WP02 Plus 500ft MD (Z -23C) Tool Name Description GYD-GC-MS Gyrodata gyrocompassing m/s INC+TREND Inclinometer+ known azi trend MWD+IFR+MS-WOCA MWD + IFR + Multi Station W/O Crustal MWD MWD - Standard 5/24/2016 2:15.51AM Page 2 of 5 COMPASS 5000.1 Build 81B BP Anticollision Report Company: North America -ALASKA- BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Mean Sea Level Reference Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Site Error: 0.00usft North Reference: True Reference Well: Z-23 Survey Calculation Method: Minimum Curvature Well Error: 0.00usft Output errors are at 1.00 sigma Reference Wellbore Z -23C Database: EDM R5K-Alaska PROD - ANCP1 Reference Design: Z -23C WP02 Plus 500ft MD Offset TVD Reference: Offset Datum Summary Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Offset Well - Wellbore - Design (usft) (usft) (usft) (usft) PB Chev Tr CHEV181112 - CHEV181112 - CHEV181112 Out of range PB Z Pad Plan Kup Z-106 (27+30) v6 - Plan Z-106 - Plan #4 Out of range Z-01 - Z-01 - Z-01 Out of range Z-01 - Z-01 A- Z-01 A Out of range Z-01-Z-01APB1-Z-01APB1 Out of range Z-01 - Z-01APB2 - Z-01APB2 Out of range Z-01 - Z-01 B- Z-01 B Out of range Z-02 - Z-02 - Z-02 Out of range Z-02 - Z -02A - Z -02A Out of range Z-04 - Z-04 - Z-04 Out of range Z-04 - Z -04A - Z -04A Out of range Z-05 - Z-05 - Z-05 Out of range Z-05 - Z -05A - Z -05A Out of range Z-05 - Z-05APB1 - Z-05APB1 Out of range Z-100 - Z-100 - Z-100 Out of range Z-101 -Z-101 -Z-101 Out of range Z-103 - Z-103 - Z-103 Out of range Z-103 - Z-103PB1 - Z-103PB1 Out of range Z-103 - Z-103PB2 - Z-103PB2 Out of range Z-11 - Z-11 - Z-11 Out of range Z-11 - Z -11A - Z -11A Out of range Z-112 - Z-112 - Z-112 Out of range Z-112 - Z-112PB1 - Z-112PB1 Out of range Z-112 - Z-112PB2 - Z-112PB2 Out of range Z-114 - Z-114 - Plan #21 Z-114 Out of range Z-114 - Z-114 - Z-114 Out of range Z-116 - Z-116 - Z-116 Out of range Z-116 - Z-116PB1 - Z-116PB1 Out of range Z-116 - Z-116PB2 - Z-116PB2 Out of range Z-118 - Z-118 - Plan #13b Z-118 Out of range Z-12 - Z-12 - Z-12 Out of range Z-13 - Z-13 - Z-13 Out of range Z-13 - Z-1 3A - Z-1 3A Out of range Z-13 - Z-13APB1 - Z-13APB1 Out of range Z-14 - Z-14 - Z-14 Out of range Z-14 - Z -14A - Z -14A Out of range Z-14 - Z -14B - Z-146 Out of range Z-15 - Z-15 - Z-15 Out of range Z-15 - Z-1 5A - Z-1 5A Out of range Z-15 - Z-15APB1 - Z-15APB1 Out of range Z-15 - Z-15APB2 - Z-15APB2 Out of range Z-17 - Z-17 - Z-17 Out of range Z-17 - Z -17A - Z-1 7A Out of range Z-17 - Z-17APB1 - Z-17APB1 Out of range Z-19 - Z-19 - Z-19 Out of range Z-19 - Z-1 9A - Z-1 9A Out of range Z-20 - Z-20 - Z-20 Out of range Z-21 - Z-21 - Z-21 Out of range Z-21 - Z-21 A- Z-21 A Out of range Z-210 - Z-210 - Z-210 Out of range Z-210 - Z-210PB1 - Z-210PB1 Out of range 5/24/2016 2:15:51AM Page 3 of 5 COMPASS 5000.1 Build 81B Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00usft Reference Well: Z-23 Well Error: 0.00usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 Plus 500ft MD Summary Site Name Offset Well - Wellbore - Design PB Z Pad Z-22 - Z-22 - Z-22 Z-22 - Z -22A - Z -22A Z-22 - Z -22B - Z -22B Z-23 - Z-23 - Z-23 Z-23 - Z -23A - Z -23A Z-23 - Z-23AL1 XX ( has reports do not delete) - Z Z-23 - Z -23B - Z -23B Z-23 - Z -23C - Z -23C WP02 Z-24 - Z-24 - Z-24 Z-25 - Z-25 - Z-25 Z-26 - Z-26 - Z-26 Z-26 - Z -26A - Z -26A Z-27 - Z-27 - Z-27 Z-28 - Z-28 - Z-28 Z-29 - Z-29 - Z-29 Z-32 - Z-32 - Z-32 Z-32 - Z -32A - Z -32A Z-32 - Z -32B - Z -32B Z-32 - Z-32BL1 - Z-32BL1 Z-32 - Z-32BPB1 - Z-32BPB1 Z-32 - Z-32BPB2 - Z-32BPB2 Z-32 - Z -32C - Plan #7b Z -32C apprved Z-32 - Z -32C - Z -32C Z-33 - Z-33 - Z-33 Z-33 - Z -33A - Z -33A Z-39 - Z-39 - Z-39 Z-39 - Z -39A - Z -39A Z-50 - Z-50 - Plan #8 Z-50 v6 Z-50 - Z-50 - Z-50 Z-69 - Z-69 - Z-69 BP Anticollision Report Local Co-ordinate Reference: Well Z-23 ND Reference: Mean Sea Level MD Reference: Z -23B @ 81.06usft (Doyon 16) North Reference: True Survey Calculation Method: Minimum Curvature Output errors are at 1.00 sigma Database: EDM R5K - Alaska PROD - ANCP1 Offset ND Reference: Offset Datum Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Depth Depth Distance (usft) from Plan (usft) (usft) (usft) (usft) Out of range Out of range Out of range Out of range 9,186.09 9,225.00 145.14 67.53 79.39 Pass - Major Risk Out of range 9,480.00 9,550.00 113.17 1.21 113.17 Pass - NOERRORS 12,249.00 12,249.00 0.00 0.26 0.00 Pass - NOERRORS Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range 5/24/2016 2:15:51AM Page 4 of 5 COMPASS 5000.1 Build 81B Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: O.00usft Reference Well: Z-23 Well Error: O.00usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 Plus 500ft MD BP Anticollision Report Local Co-ordinate Reference: ND Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Reference Depths are relative to Z -23B @ 81.06usft (Doyon 16) Coordinates are relative to: Z-23 Dffset Depths are relative to Offset Datum Coordinate System is US State Plane 1927 (Exact solution), Alaska Zone 04 central Meridian is 150° 0'0.000 W ° Grid Convergence at Surface is: 0.76° Ladder Plot 200 - - -------------------- ---- -- -- ------ ------- 0150- C) ---01500 o -J-- ------ ---- ------------- - - -'--- - - - - -- -- Q (n 100- Q) 00 N U- --- ------------------- - - - - ----1-- - - - - - - -'- - - - O 50 CD - LEGEND -- - !, HEV181112,C V181112V1 - - Z 116,2-116PB2,Z-116PB2VOZ-23,Z-23AL1X� (has reports( - - - - _- -. - - - - - - -- - -1 - - - - - - - - - - - -- - -- -. - D (27+30)v6,Pla Z-106,Plan#4Z-106v6.1VO $ Z-118,?-118,Plan#13bZ-118VO Z-23,Z-23B,Z-23BV7 -0 V1 - Z12,Z-12,Z-12V1 Z-23,Z-23C,Z-23CWP02VO E- 1AV4 0 7-13 7111- 1 - - - B ,Z-01APB1V60 2000 42�' Z-1347066A,Z-13AV2 6000 8000 Z W5,Z-25V1 12000 B ,Z-01APB2V5 ->�- Z-13,Z-13APg, (-13A V3 �F Z -26,Z -26,Z -26V1 �- 1BV4 $ Z-14,Z-14,Z-14V1urgR�pth(2000usft/in) -Ar Z-26, Z -26A, Z -26A V2 )2A V1 $ Z-14,Z-14B,Z-14BV9 -$- Z -28,Z -28,Z -28V1 IV7 $ Z-1 5, Z-1 5, Z-1 5 V1 iF Z-29, Z-29, Z-29 V1 14AV10 $ Z-15,Z-15A,Z-15AVO - - Z -32,Z -32,Z -32V2 iV3 $ Z-15,Z-15APB1,Z-15APB1VO Z-32, Z -32A, Z -32A VO 6A VO $ Z-1 5, Z-1 5APB2, Z-1 5APB2 VO -Q- Z-32,Z-32B,Z-32BVO ,Z-05APB1 VO $ Z-1 7,Z -17,Z-1 7V1 $ Z-32,Z-32BL1,Z-32BL1 VO 100V7 $ Z-17,Z-17A,Z-17AVO Z-32,Z-32BPB1,Z-32BPB1 VO 101 V5 $ Z-17,Z-17APB1,Z-17APB1 VO -j- Z-32,Z-32BPB2,Z-32BPB2 VO 103 V1 - - Z-1 9, Z-1 9, Z-1 9 V1 $ Z-32,Z-32C,Plan #7bZ-32Cappned 5/24/2016 2.15.51AM Page 5 of 5 COMPASS 5000.1 Build 81B Project: Prudhoe Bay - ANTI -COLLISION SETTINGS COMPANY DETAILS: North America - ALASKA - BP Site: PBZ Pad �.`p Well: 2.23 p MD, interval: 25.00 Ij Interpolation Method: Calculation Method Minimum Curvature Depth Range From: 12249.00 To 12749.00 Error System ISCWSA Wellbore: Z -23C Results Limited By: Centre Distance: 1472.20 Scan Method: Tray. Cylinder North Plan: Z -23C WP02 Plus, 500ft MD(Z-232-23C) Reference: Plan:Z-23C WP02 Plus 500ft MD(Z-23/Z-23C) Error Surf ac e: Elliptical Conic Warning Method: Rules Based Depth Range From: 12249.00 To 12749.00 WELLDETAILS: Z-23 Ground Level: 54.04 +N/ -S +EW Northing Easting Latiuude Longitude Slot From Colour To MD 0.00 0.00 5959360.030 599459.070 70°1r 54.240N 149.11'40.333W SECTION DETAILS 0 Sec MD Inc Azi TVD +W -S +E/ -W Dleg TFace VSect 1 9172.00 62.41 333.74 8797.87 1180.88 -195.25 0.00 0.00 -759.54 2 9205.78 66.53 331.48 8812.42 1207.94 -209.28 13.61 -26.83 -785.21 240 3 9235.75 70.17 330.51 8823.48 1232.29 -222.79 12.51 -14.09 -809.09 4 9263.64 73.99 328.98 8832.06 1255.21 -236.16 14.66 -21.10 -832.12 330 30 12249 12749 5 9280.00 76.74 328.41 8836.19 1268.73 -244.38 17.14 -11.41 -846.01 220 6 9300.00 78.30 327.49 8840.51 1285.28 -254.74 9.00 -30.00 -863.26 7 9330.00136.41 320.75 8844.51 1309.33 -272.16 35.00 -40.00 -890.36 8 9334.00 87.11 319.54 8844.73 1312.39 -274.72 35.00 -60.00 -894.11 200 9 9554.00 83.51 242.30 8866.03 1351.20 -473.67 35.00 -96.00 -1085.81 10 9634.00 84.27 214.15 8874.72 1298.74 -532.37 35.00 -90.00 -1110.42 ' 11 9884.00 86.78 184.16 8894.67 1065.99 -613.09 12.00 -86.50 -1063.94 180 - --� 12 10064.00 87.01 162.53 8904.53 888.53 -592.37 12.00 -90.00 -957.27 13 10364.00 90.51 126.68 8911.23 648.08 -421.44 12.00 -85.00 -689.02 14 10484.00 96.31 113.47 8904.06 588.17 -318.08 12.00 -66.00 -569.55 160/ ' 15 10634.00 96.00 131.57 8887.86 508.33 -192.87 12.00 90.00 -421.19 � V 16 10884.00 90.73 101.98 8872.87 397.35 27.46 12.00 99.00 -174.89 17 11074.00 90.67 724.78 8870.53 322.46 200.70 12.00 90.00 12.58 18 11324.00 93.08 94.86 8862.16 238.68 433.07 12.00 -85.00 255.71 140 %' ` \\\ \ 19 11469.00 92.94 77.43 8854.50 248.38 576.98 12.00 90.00 375.49 300 / \�� 60 20 11739.00 92.48 109.87 8841.39 231.42 842.54 12.00 90.00 613.95 � 21 11949.00 70.78 96.84 8871.91 183.19 1042.88 12.00 150.00 811.56 / 120 21 �\ \ \\ 22 12099.00 71.75 77.85 8920.49 189.81 1183.99 12.00 90.00 930.46 23 12248.00 72.67 96.74 8966.69 196.46 1325.89 12.00 90.00 1050.02 / / \ 24 12449.00 74.21 71.73 9024.52 215.71 1514.84 12.00 -90.00 1204.04 100 V A ,� � 25 12749.00 77.28 108.79 9100.88 213.78 1799.88 12.00 90.00 1451.85 80 „ CPlus 501 20 270. 90 20 .\ 40 60 80 SURVEY PROGRAM Date: 2016-03 17T00.00 00 Validated: Yes Version: 100 j Depth From Depth To Survey/Plan Tool 100.02 6700.06 Z -23A Srvy 1 GYD-GC MS (Z -23A) GYD-GC-MS 120 6718.00 6748.10 Z -23B SrvyI Inc+Trend(Z-23B) INC+TREND 6809.92 9172.00 Z -23B Srvy2 MWD+IFR+MS(Z-23B) MWD+IFR+MS-WOCA 240 \ 0 120 9172.0 12749.00 Z -23C WP02 Plus 500ft MD (Z -23C) MWD 140 V � 160 _ _ 180 200 210 220 240 150 180 Azimuth from North[] vs Centre to Centre Separation [20 usft/in] LEGEND Z-23, Z -23C, Z -23C WP02 VO North America - ALASKA - BP Prudhoe Bay PB Z Pad Z-23 500292195000 Z -23C Z -23C WP02 Plus 500ft MD Travelling Cylinder Report 24 May, 2016 Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 Plus 500ft MD BP Travelling Cylinder Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Reference Z -23C WP02 Plus 500ft MD Filter type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference Interpolation Method: MD Interval 25.00usft Error Model: ISCWSA Depth Range: 12,249.00 to 12,749.00usft Scan Method: Tray. Cylinder North Results Limited by: Maximum center -center distance of 1,472.20 usft Error Surface: Elliptical Conic Survey Tool Program Date 5/24/2016 From To (usft) (usft) Survey (Wellbore) 100.02 6,700.06 Z -23A Srvy 1 GYD-GC MS (Z -23A) 6,718.00 6,748.10 Z -23B Srvy 1 Inc+Trend (Z -23B) 6,809.92 9,172.00 Z -23B Srvy 2 MWD+IFR+MS (Z -23B) 9,172.00 12,749.00 Z -23C WP02 Plus 500ft MD (Z -23C) Casing Points — Summary Tool Name Description GYD-GC-MS Gyrodata gyrocompassing m/s INC+TREND Inclinometer+ known azi trend MWD+IFR+MS-WOCA MWD + IFR + Multi Station W/O Crustal MWD MWD - Standard Measured Vertical Casing Hole Depth Depth Diameter Diameter (usft) (usft) Name (in) (in) 2,646.36 2,565.10 13 3/8" 13.375 17.500 6,718.00 6,617.71 9 5/8" 9.625 12.250 8,913.00 8,625.81 DRILLING LINER 1 7.000 8.500 12,749.00 9,100.88 2-7/8" 2.875 4.250 Site Name Offset Well - Wellbore - Design PB Z Pad Plan Kup Z-106 (27+30) v6 - Plan Z-106 - Plan #4 Z -116 -Z -116-Z-116 Z-116 - Z-116PB1 - Z-116PB1 Z-116 - Z-116PB2 - Z-116PB2 Z-118 - Z-118 -Plan #13b Z-118 Z -13 -Z -13-Z-13 Z-13 - Z-1 3A - Z-1 3A Z-13 - Z-13APB1 - Z-13APB1 Z -14 -Z -14-Z-14 Z-14 - Z -14A - Z -14A Z-14 - Z -14B - Z -14B Z-15 - Z-15 - Z-15 Z-15 - Z-1 5A - Z-1 5A Z-15 - Z-15APB1 - Z-15APB1 Z-15 - Z-15APB2 - Z-15APB2 Z-17 - Z-17 - Z-17 Z-17 - Z-1 7A - Z-1 7A Z-17 - Z-17APB1 - Z-17APB1 Z-19 - Z-19 - Z-19 Z-19 - Z-1 9A - Z-1 9A Z-20 - Z-20 - Z-20 Z-210 - Z-210 - Z-210 Z-210 - Z-210PB1 - Z-210PB1 Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Depth Depth Distance (usft) from Plan (usft) (usft) (usft) (usft) Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 2:00.15AM Page 2 COMPASS 5000.1 Build 81B Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 Plus 500ft MD Summary Site Name Offset Well - Wellbore - Design PB Z Pad Z-23 - Z-23ALl XX ( has reports do not delete) - Z Z-23 - Z -23C - Z -23C WP02 Z-24 - Z-24 - Z-24 Z-25 - Z-25 - Z-25 Z-26 - Z-26 - Z-26 Z-26 - Z -26A - Z -26A Z-27 - Z-27 - Z-27 Z-39 - Z-39 - Z-39 Z-39 - Z -39A - Z -39A Z-69 - Z-69 - Z-69 BP Travelling Cylinder Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Depth Depth Distance (usft) from Plan (usft) (usft) (usft) (usft) Out of range 12,249.00 12,249.00 0.00 0.26 0.00 Pass - NOERRORS Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Offset Design PB Z Pad - Z-23 - Z -23C - Z -23C WP02 Offset Site Error: 0 00 usft Survey Program: 100-GYD-GC-MS, 6718-INC+TREND. 6810-MWD+IFR+MS-W0CA. 9172 -MWD Rule Assigned: NOERRORS Offset Well Error: 0.00 usft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toolface+ Offset Wellbore Centre Casing - Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth +N/S +E/ -W Hole Size Centre Distance Deviation (usft) (usft) (usft) (usft) (usft) (usft) (") usft (usft) (usft) m usft f 1 1 ) (usff) (usft) 12,249.00 8,966.69 12,249.00 8,966.69 32.63 32.28 96.74 196.46 1,325.89 0.000 0.00 0.26 0.00 Pass - NOERRORS, CC, ES, SI CC - Min Centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 2:00:15AM Page 3 COMPASS 5000.1 Build 818 BP Travelling Cylinder Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay ND Reference: Mean Sea Level Reference Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Site Error: 0.00 usft North Reference: True Reference Well: Z-23 Survey Calculation Method: Minimum Curvature Well Error: 0.00 usft Output errors are at 1.00 sigma Reference Wellbore Z -23C Database: EDM R5K - Alaska PROD - ANCP1 Reference Design: Z -23C WP02 Plus 500ft MD Offset ND Reference: Offset Datum Reference Depths are relative to Z -23B @ 81.06usft (Doyon 16) Coordinates are relative to: Z-23 Offset Depths are relative to Offset Datum Coordinate System is US State Plane 1927 (Exact solution), Alaska Zone 04 Central Meridian is 150° 0'0.000 W Grid Convergence at Surface is: 0.76 ° Ladder Plot 100- 75-- .0 0075 - - - _ - (0 a 50 U o ' m ; m U 25- -------------------------------------------------------- ------ 5------- ------ -------------------------J---------------- 0 0 2000 4000 6000 8000 10000 12000 Measured Depth LEGEND -� Z-23,Z-23C,Z-23CWP02V0 CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 2:00:15AM Page 4 COMPASS 5000.1 Build 81B BP Travelling Cylinder Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay ND Reference: Mean Sea Level Reference Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Site Error: 0.00 usft North Reference: True Reference Well: Z-23 Survey Calculation Method: Minimum Curvature Well Error: 0.00 usft Output errors are at 1.00 sigma Reference Wellbore Z -23C Database: EDM R5K - Alaska PROD - ANCP1 Reference Design: Z -23C WP02 Plus 500ft MD Offset ND Reference: Offset Datum Reference Depths are relative to Z -23B @ 81.06usft (Doyon 16) Coordinates are relative to: Z-23 Offset Depths are relative to Offset Datum Coordinate System is US State Plane 1927 (Exact solution), Alaska Zone 04 Central Meridian is 150° 0' 0.000 W Grid Convergence at Surface is: 0.76 ° Separation Factor Plot 9.00 0 6.00 LL 0 `m CL-- --- -- 3.00- 0.00 0 2500 5000 7500 10000 12500 Measued Depth LEGEND —�• Z-23,Z-23C,Z-23CWP02V0 CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5124/2016 2:00:15AM Page 5 COMPASS 5000.1 Build 81B Company: North America - ALASKA- BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 Plus 500ft MD BP Travelling Cylinder Report Local Co-ordinate Reference: ND Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset ND Reference: Well Z-23 Mean Sea Level Z-236 @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum =ference Depths are relative to Z -23B @ 81.06usft (Doyon 16) Coordinates are relative to: Z-23 ffset Depths are relative to Offset Datum Coordinate System is US State Plane 1927 (Exact solution), Alaska Zone 04 entral Meridian is 150° 0'0.000 W Grid Convergence at Surface is: 0.76 ° Travelling Cylinder Not 330 30 300 60 270 - 90 240 120 210 150 180 Azimuth from North [°] vs Centre to Centre Separation [0 usft/in] LEGEND —�- Z-23,Z-23C,Z-23C\AP02V0 CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 2:00.15AM Page 6 COMPASS 5000.1 Build 81B h„ I Project: Prudhoe Bay Site: PBZ Pad Coordinate (NE) Reference: Well Z-23, True North - "muUs True Noe.a by 'Sy Parent Wellbore: Z -23B Z-23 Well: Z-23 Wellbore: Z -23G 8710 Magner,%% Strenp Argi :809 oD.ngie 120 Ground Level: 54.04 PIan:Z-23C ,N/ -S +EJ -W MOCUBGGM20 8515] REFERENCE INFORMATION 8580: Coordinate (NE) Reference: Well Z-23, True North WELL DETAILS: Z-23 Ver icel (TVD) Reference: Mean Sea Level Parent Wellbore: Z -23B Z-23B-ActualSiwey TIP - 8710 KOP Ground Level: 54.04 8775 ,N/ -S +EJ -W 88401 � Northing Easting 1050 z -13C Fault2 Latittude Longitude 0.00 0.00 5959360.030 599459.070 70'17'54240N 149011'40.333W 8836.19 9280.00 KOP �� 900 SECTIONDETAILS .02 Sec MD Inc Azi SSTVD +W -S +EbW Dleg TFace VSect Target 1 9172.00 62.41 333.74 8797.87 1180.88 -195.25 0.00 0.00 -759.54 2 9205.78 66.53 331.48 8812.42 1207.94 -209.28 13.61 -26.83 -785.21 3 9235.75 70.17 330.51 8823.48 1232.29 -222.79 12.51 -14.09 -809.09 4 9263.64 73.99 328.98 8832.06 1255.21 -236.16 14.66 -21.10 -832.12 5 9280.00 76.74 328.41 8836.19 1268.73 -244.38 17.14 -11.41 -846.01 6 9300.00 78.30 327.49 8840.51 1285.28 -254.74 9.00 -30.00 -863.26 7 9330.00 86.41 320.75 8844.51 1309.33 -272.16 35.00 -40.00 -890.36 8 9334.00 87.11 319.54 8844.73 1312.39 -274.72 35.00 -60.00 -894.11 9 9554.00 83.51 242.30 8866.03 1351.20 -473.67 35.00 -96.00 -1085.81 10 9634.00 84.27 214.15 8674.72 1298.74 -532.37 35.00 -90.00 -1110.42 11 9884.00 86.78 184.16 8894.67 1065.99 -613.09 12.00 -86.50 -1063.94 12 10064.00 87.01 162.53 8904.53 888.53 -592.37 12.00 -90.00 -957.27 13 10364.00 90.51 126.68 8911.23 648.08 -421.44 12.00 -85.00 -689.02 14 10484.00 96.31 113.47 8904.06 588.17 -318.08 12.00 -66.00 -569.55 15 10634.00 96.00 131.57 8887.86 508.33 -192.87 12.00 90.00 421.19 16 10884.00 90.73 101.98 8872.87 397.35 27.46 12.00 -99.00 -174.89 17 11074.00 90.67 124.78 8870.53 322.46 200.70 12.00 90.00 12.58 18 11324.00 93.08 94.86 8862.16 238.68 433.07 12.00 -85.00 255.71 19 11469.00 92.94 77.43 8854.50 248.38 576.98 12.00 -90.00 375.49 20 11739.00 92.48 109.87 8841.39 231.42 842.54 12.00 90.00 613.95 21 11949.00 70.78 96.84 8871.91 183.19 1042.88 12.00 -150.00 811.56 22 12099.00 71.75 77.85 8920.49 189.81 1183.99 12.00 -90.00 930.46 23 12249.00 72.67 96.74 8966.69 196.46 1325.89 12.00 90.00 1050.02 8515] REFERENCE INFORMATION 8580: Coordinate (NE) Reference: Well Z-23, True North 86451 Ver icel (TVD) Reference: Mean Sea Level Parent Wellbore: Z -23B Z-23B-ActualSiwey TIP - 8710 KOP End 9dcg/I (X11 8775 88401 � Z-23CTI R 7 WELLBORE DETAILS: Z -23C REFERENCE INFORMATION Z -23C Coordinate (NE) Reference: Well Z-23, True North Z -23/Z-23 Ver icel (TVD) Reference: Mean Sea Level Parent Wellbore: Z -23B Section(VS)Refemnce: Slot-(0.00N,0.00E) Tie on MD: 9172.00 Measured Dwlh Reference: Z -23B@ B1.06usft(Doyon 16) Calculation WOW Minimum G-Wre Slot 1500 o3R_�N 1350 - Z-23CTI I. - -Z-2317,-23A Z -23/Z-23 ANNOTATIONS TVD MD Annotation ---- 1200' 8797.87 9172.00 Z -23B Actual SurAy 8812.42 9205.78 Z-238 Actual Survey 1050 z -13C Fault2 8823.48 9235.75 Z-23BActualSulveyY 8832.06 9263.64 Z -23B Actual Survey TIP ty r Vw 8836.19 9280.00 KOP �� 900 - - .02 8840.51 9300.00 End9deg/100ft 8844.51 9330.00 7 p 750- Z-23CFault I 2-2 C72 8844.73 9334.00 B 8866.03 9554.00 9 � 9634.00 End35deg/100ft 6008874.72 8894.67 9884.00 11 3C T3 8904.53 10064.00 12 450 8911.23 10364.00 13 8904.06 10484.00 14 o z Z-23CFault3 8887.86 10634.00 15 ^ 3W 23CT4 Z-232 23C 8872.87 10884.00 16 8870.53 11074.00 17 150 Z-23CT5 8862.16 11324.00 18 z-23CT6 Z -231M 8854.50 11469.00 19 0 n 8841.39 11739.00 20 8871.91 11949.00 21 8920.49 12099.00 22 1 -150 8966.69 12249.00 TO at 12249.00 Z-23CFault4 -3W.. -450' -600 -. -12(Hl -1050 -9(M -750 -600 -450 -0 300 -150 0 150 300 450 600 750 900 1050 1200 1350 1500 West( -)/East(+) (150 usft/in) Z -23C 890511 En 5 : 16 17 _. 18 19 20 11 12 13 14 15Z-23CT6 21 Z -2 312-23C - Z -23C T4 Z -23C TS 22 8970 - "L-23C T2 Z -23C T3 - - . - '- 9035- _ _ 1 TD ntl2249.(X) Z -23C T7 9100! Mevl0S65 Level L�1365 -130(1 1235 -1170 -1105 -1040 -975 -910 -845 -780 -715 -650 -585 -520 -455 -390 -325 -260 -195 -130 -65 U 65 l 130 195 260 325 390 1 455 5r.-._._7 ---7 8 20 5855 6 650 50 715 780 845 910 975 1040 1105 11170 Vertical Section at 120.00° (65 usft/in) C W Mean Ss Project: Prudhoe Bay Site: PBZPad Well: Z-23 Wellbore: Z -23C Plan: Z -23C W PO2 (Z -232-23C) A:v�rocs bT-Nm Magnetic NOM:19.d; Magh—Feu S.rgt 575013. Op Angle: 60.91. _ D, .1, M1 Mam BWM201 WELLBORE DETAILS: Z -23C REFERENCE INFORMATION Z -23C Co-ordinate (W5) Reference: Wet Z-23, True Nath Verfiml(TVD) Reference: Mean See Level Parent Wellbore: Z -23B Secten(VS)Refere— S1.t-(O.00N,O.00E) Tie On MD: 9172.00 Measured Depth Reference: Z -23B @ 01.06uat (Doyon 16) Cebuletim Aklhod: Minimum CurveWre West( -)/East(+) (60 usft/in) Z-_20 Project: Prudhoe Bay Site: PB Z Pad Well: Z-23 Wellbore: Z -23C Plan: Z -23C WP02 (Z -232-23C) ANTI -COLLISION SETTINGS COMPANY DETAILS: North America - ALASKA - BP Interpolation Method: MD, interval: 25.00 Calculation Method: Minimum Curvature Depth Range From: 9172.00 To 12249.00 Error System: ISCWSA Results Limited By: Centre Distance: 1422.20 Scan Method: Tray. Cylinder North Reference: Plan: Z -23C WP02 (Z -23/Z -23C) Error Surface: Elliptical Conic 380 Z -23A 360 340 i LEGEND 320 �� _• CHEV181112, CHEV181112, CHEV181112 V1 it -• Z-23, Z-23, Z-23 V3 v> Z-23, Z -23A, Z -23A V2 300'- Z-23, Z -23B, Z -23B V7 a Z-50, Z-50, Z-50 VO 280 it _260 c_ J) N 240 0 N .o220 - 220as as 200 ar aci 180 U o ��I (1) 160- C (11 U 140 ii 120 Possible Offset Well 1004 111,Magnetic Interference: From To 80V KOP - 9,420' MD 60- 0 40- 40 - 20 Z-23 B 0 N W O O O O O O O O O O O O O O O O O O O O O O O O O O O O Measured Depth (100 usft/in) O O O O O O O O O O O O O O O O O O O O O O O O O O Project: PB Z Pad ANTI-COLLISION SETTINGS COMPANY DETAILS: North America - ALASKA - BP Site: Prudhoe Bay Interpolation Method: MD, interval: 25.00 Calculation Method: Minimum Curvature 0 [7 Well: Z-23 Depth Range From: 9172.00 To 12249.00 Error System: ISCWSA 11' Wellbore: Z-23C Results Limited By: Centre Distance: 1422.20 Scan Method: Tray. Cylinder North Reference: Plan: Z-23C WP02 Z-23/Z-23C Error Surface: Elliptical Conic PIan:Z-23CWP02(Z-232-23C) [ Warning Method: Rules Based Ground Level: 54.04 Deth Rane. FJ-W Northing Easting Latittude Longitude Slot p g 9172.00 To 12249.00 0.00 0.00 5959360.030 599459.070 70°1T54.240N 14V11'40.333W From Colour To MD Sec W MD Inc Azi TVD +N/-S +E/-Dleg TFace VSect Q100 9172 9420 1 9172.00 62.41 333.74 8797.87 1180.88 -195.25 0.00 0.00 -759.541 Possible Magnetic Interference: 2 9205.78 66.53 331.48 8812.42 120T94 -209.28 13.61 -26.83 -785.21 340 20 9420_9559 3 9235.75 70.17 330.51 8823.48 1232.29 -222.79 12.51 -14.09 -809.09 From KOP to 9,420'MO Z-2369550 - 12249 4 9263.64 73.99 328.98 8832.06 1255.21 -236.16 14.66 -21.10 -832.12 90 5 9280.00 76.74 328.41 8836.19 1268.73 -244.38 17.14 -11.41 -846.01 6 9300.00 78.30 327.49 8840.51 1285.28 -254.74 9.00 -30.00 -863.26 7 9330.00 86.41 320.75 8844.51 1309.33 -272.16 35.00 -40.00 -890.36 9455. 8 9334.00 87.11 319.54 8844.73 1312.39 -274.72 35.00 -60.00 -894.11 320 80 40 9 9554.00 83.51 242.30 8866.03 1351.20 -473.67 35.00 -96.00 -1085.81 10 9634.00 84.27 214.15 8874.72 1298.74 -532.37 35.00 -90.00 -1110.42 11 9884.00 86.78 184.16 8894.67 1065.99 -613.09 12.00 -86.50 -1063.94 12 10064.00 87.01 162.53 8904.53 888.53 -592.37 12.00 -90.00 -957.27 % 13 10364.00 90.51 126.68 8911.23 648.08 -421.44 12.00 -85.00 -689.02 14 10484.00 96.31 113.47 8904.06 588.17 -318.08 12.00 -66.00 -569.55 / \ \ 15 10634.00 96.00 131.57 8887.86 508.33 -192.87 12.00 90.00 -421.19 6016 10884.00 90.73 101.98 8872.87 397.35 27.46 12.00 -99.00 -174.89 17 11074.00 90.67 124.78 8870.53 322.46 200.70 12.00 90.00 12.58 3001 8 11324.00 93.08 94.86 8862.16 238.68 433.07 12.00 -85.00 255.71 94OU �:\ \ 60 19 11469.00 92.94 77.43 8854.50 248.38 576.98 12.00 -90.00 375.49 _ \ \ 20 11739.00 92.48 109.87 8841.39 231.42 842.54 12.00 90.00 613.95 7 �\ \ 21 11949.00 70.78 96.84 8871.91 183.19 1042.88 12.00 -150.00 811.56 22 12099.00 71.75 77.85 8920.49 189.81 1183.99 12.00 -90.00 930.46 40 23 12249.00 72.67 96.74 8966.69 196.46 1325.89 12.00 90.00 1050.02 -2.3 \ \ZR \ - Depth From Depth To S ey/Plan -- Tool - j 30 -� 100.02 fi70006 Z23ASrvy1GVD-GC MS(Z-23A) GYD.GC-MS j �� 6718.00 6748.10 Z-23B Srvy 1lnc+Tr"(Z-23B) INC.TREND r ,\ 6809.92 9172.00 Z-238 Srvy 2MWD+IFR.MS(Z-23B) MWD+IFR+MS-WOCA 9392 9172.00 12249.00 Z-23CWPo2(Z-23C) MWD 280 ; / 20 Z.23 80 - 10 340 0240 20 � 9349 Z-236 270 9172 90 320 9537 200 40 10 i e 160 % 9497 �� 260' 20 / 100 �� / 120 60 /Z 23A, 30 �9445- ` Z- 3d PbZ/ 40�, -23B\,\ 8( 9392 270 9172 1 9 240 50 120 \ 40 60 9? 80 70 / Z�23A - � Contactlnfo: SuppodiWe i20" 240\, 240`120 ,, 120 Jose Vazquez-Tech Planner 80 140 LEGEND G E N D 714478-4339 Cel Phone cREvlenlz, c Evlettlz, cnEv161112 v1 160 907-341-7604 Emergency CHEV1-23.Z-23 v3 YoshaRagbirsingh- SurveyManager 90 Z-23, ZZ-23,Z-23. -23V3v2 907-342-2436 Cel Phone Z-23,Z-23B.Z-23Bv7 220 140 TarStaurdivant- DDCoordinator 200 160 ,- Z-50,Z-50,Z-50 V0 200 907-301-1858 Cd Phone 100 Patrick Rider -MWD Coordinator 180 200 240 160 907-952-3497 Cell Phone Carl Ulrich- Operations Manager Azimuth from North vs Centre to Centre Separation [10 usft/in] 180 907-382-5534 Cell Phone Azimuth from North [°] vs Centre to Centre Separation [40 usff/in] North America - ALASKA - BP Prudhoe Bay PB Z Pad Z-23 500292195000 Z -23C Z -23C WP02 Travelling Cylinder Report 24 May, 2016 Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 BP Travelling Cylinder Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Reference Z -23C WP02 Filter type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference Interpolation Method: MD Interval 25.00usft Error Model: ISCWSA Depth Range: 9,172.00 to 12,249.00usft Scan Method: Tray. Cylinder North Results Limited by: Maximum center -center distance of 1,422.20 usft Error Surface: Elliptical Conic Survey Tool Program Date 5/23/2016 Offset From To Depth (usft) (usft) Survey (Wellbore) Tool Name 100.02 6,700.06 Z -23A Srvy 1 GYD-GC MS (Z -23A) GYD-GC-MS 6,718.00 6,748.10 Z -23B Srvy 1 Inc+Trend (Z -23B) INC+TREND 6,809.92 9,172.00 Z -23B Spry 2 MWD+IFR+MS (Z -23B) MWD+IFR+MS-WOCA 9,172.00 12,249.00 Z -23C WP02 (Z -23C) MWD Casing Points 9 5/8" 9.625 ISummary Description Gyrodata gyrocompassing m/s Inclinometer + known azi trend MWD + IFR + Multi Station W/O Crustal MWD - Standard Measured Vertical Offset Casing Hole Depth Depth Diameter Diameter (usft) (usft) Name (in) (in) 2,646.36 2,565.10 13 3/8" 13.375 17.500 6,718.00 6,617.71 9 5/8" 9.625 12.250 8,913.00 8,625.81 DRILLING LINER 1 7.000 8.500 12,249.00 8,966.69 2-7/8" 2.875 4.250 CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38:04AM Page 2 COMPASS 5000.1 Build 818 Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Offset Well - Wellbore - Design (usft) (usft) (usft) (usft) PB Chev Tr CHEV181112 - CHEV181112 - CHEV181112 9,480.00 10,906.00 1,009.14 149.43 875.08 Pass - Major Risk PB Z Pad Plan Kup Z-106 (27+30) v6 - Plan Z-106 - Plan #4 Out of range Z-01 - Z-01 - Z-01 Out of range Z-01 - Z -01A- Z -01A Out of range Z-01 - Z-01APB1 - Z-01APB1 Out of range Z-01 - Z-01APB2 - Z-01APB2 Out of range Z-01 - Z-01 B- Z-01 B Out of range Z-02 - Z-02 - Z-02 Out of range Z-02 - Z -02A - Z -02A Out of range Z-04 - Z-04 - Z-04 Out of range Z-04 - Z -04A - Z -04A Out of range Z-05 - Z-05 - Z-05 Out of range Z-05 - Z -05A - Z -05A Out of range Z-05 - Z-05AP61 - Z-05APB1 Out of range Z-100 - Z-100 - Z-100 Out of range Z-101 - Z-101 - Z-101 Out of range Z-103 - Z-103 - Z-103 Out of range Z-103 - Z-103PB1 - Z-103PB1 Out of range Z-103 - Z-103PB2 - Z-103PB2 Out of range Z-11 - Z-11 - Z-11 Out of range Z -11 -Z -11A -Z -11A Out of range CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38:04AM Page 2 COMPASS 5000.1 Build 818 Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 Summary Site Name Offset Well - Wellbore - Design PB Z Pad Z -112 -Z -112-Z-112 Z-112 - Z-112PB1 - Z-112PB1 Z-112 - Z-112PB2 - Z-112PB2 Z-114 - Z-114 - Plan #21 Z-114 Z -114 -Z -114-Z-114 Z -116 -Z -116-Z-116 Z-116 - Z-116PB1 - Z-116PB1 Z-116 - Z-116PB2 - Z-116PB2 Z-118 - Z-118 - Plan #13b Z-118 Z-12 - Z-12 - Z-12 Z-13 - Z-13 - Z-13 Z-13 - Z -13A - Z -13A Z-13 - Z-13APB1 - Z-13APB1 Z -14 -Z -14-Z-14 Z-14 - Z -14A - Z -14A Z-14 - Z -14B - Z -14B Z-15 - Z-15 - Z-15 Z-15 - Z -15A - Z -15A Z-15 - Z-15APB1 - Z-15APB1 Z-15 - Z-15APB2 - Z-15APB2 Z-17 - Z-17 - Z-17 Z-17 - Z -17A - Z -17A Z-17 - Z-17AP61 - Z-17APB1 Z-19 - Z-19 - Z-19 Z-19 - Z -19A - Z-1 9A Z-20 - Z-20 - Z-20 Z-21 - Z-21 - Z-21 Z-21 - Z-21 A- Z-21 A Z-210 - Z-210 - Z-210 Z-210 - Z-210PB1 - Z-210PB1 Z-22 - Z-22 - Z-22 Z-22 - Z -22A - Z -22A Z-22 - Z -22B - Z -22B Z-23 - Z-23 - Z-23 Z-23 - Z -23A - Z -23A Z-23 - Z-23AL1 XX ( has reports do not delete) - Z Z-23 - Z -23B - Z -23B Z-24 - Z-24 - Z-24 Z-25 - Z-25 - Z-25 Z-26 - Z-26 - Z-26 Z-26 - Z -26A - Z -26A Z-27 - Z-27 - Z-27 Z-28 - Z-28 - Z-28 Z-29 - Z-29 - Z-29 Z-32 - Z-32 - Z-32 Z-32 - Z -32A - Z -32A Z-32 - Z-328 - Z -32B Z-32 - Z-32BL1 - Z-32BL1 Z-32 - Z-32BPB1 - Z-32BPB1 Z-32 - Z-32BPB2 - Z-32BPB2 Z-32 - Z -32C - Plan #7b Z -32C apprved Z-32 - Z -32C - Z -32C Z-33 - Z-33 - Z-33 BP Travelling Cylinder Report Local Co-ordinate Reference: ND Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset ND Reference: Reference Offset Centre to Measured Measured Centre Depth Depth Distance (usft) (usft) (usft) 11,000.00 8,125.00 1,190.99 9,186.09 9,225.00 145.14 9,480.00 9,550.00 113.17 Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K-Alaska PROD -ANCP1 Offset Datum No -Go Allowable Distance Deviation (usft) from Plan (usft) 96.01 1,120.56 67.53 79.39 1.21 113.17 Warning Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Pass - Major Risk Pass - Major Risk Out of range Pass - NOERRORS Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38:04AM Page 3 COMPASS 5000.1 Build 81B Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 BP Travelling Cylinder Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K-Alaska PROD -ANCP1 Offset Datum Summary PB Chev Tr CHEV181112 CHEV181112 Reference Offset Centre to No -Go Allowable - Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Offset Well - Wellbore - Design 9 (usft) (usft) (usft) Offset Well Error: 0.00 usft (usft) Offset PB Z Pad Z-33 - Z -33A - Z -33A Measured Vertical Measured Vertical Out of range Z-39 - Z-39 - Z-39 Toofface+ Offset Wellbore Centre Casing - Centre to Out of range Z-39 - Z -39A - Z -39A Depth Depth Depth Depth Out of range Z-50 - Z-50 - Plan #8 Z-50 v6 -N/-S +E/ -W Hole Size Centre Distance Out of range Z-50 - Z-50 - Z-50 10,775 00 8,650.00 1,421.90 84.46 1,340.94 Pass - Major Risk Z-69 - Z-69 - Z-69 (usft) (in) (usft) (usft) (usft) Out of range Offset Design PB Chev Tr CHEV181112 CHEV181112 - - - CHEV181112 Offset Site Error: 0.00 usft Survey Program: 100 -BOSS -GYRO Rule Assigned: Major Risk Offset Well Error: 0.00 usft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toofface+ Offset Wellbore Centre Casing - Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth -N/-S +E/ -W Hole Size Centre Distance Deviation (usft) (usft) (usft) (usft) (usft) (usft) (°) (usft) (usft) (in) (usft) (usft) (usft) 9,460.00 8,855.30 10,175.00 8,687.96 11.06 206.15 -1.26 2,768.36 -233.58 3.562 1,417.27 195.55 1,242.74 Pass - Major Risk 9,460.00 8,855.30 10,200.00 8,707.36 11.06 207.08 -0.56 2,753.16 -237.78 3.562 1,399.64 195.40 1,226.04 Pass - Major Risk 9,460.00 8,855.30 10,225.00 8,726.71 11.06 208.03 0.16 2,737.92 -242.02 3.562 1,382.19 195.24 1,209.58 Pass - Major Risk 9,460.00 8,855.30 10,250.00 8,746.03 11.06 208.99 0.89 2,722.62 -246.28 3.562 1,364.93 195.10 1,193.36 Pass - Major Risk 9,460.00 8,855.30 10,275.00 8,765.30 11.06 209.94 1.63 2,707.29 -250.57 3.562 1,347.87 194.95 1,177.39 Pass - Major Risk 9,460.00 8,855.30 10,300.00 8,784.53 11.06 210.90 2.40 2,691.91 -254.89 3.562 1,331.02 194.81 1,161.66 Pass - Major Risk 9,460.00 8,855.30 10,325.00 8,803.72 11.06 211.88 3.18 2,676.49 -259.25 3.562 1,314.38 194.64 1,146.25 Pass - Major Risk 9,460.00 8,855.30 10,350.00 8,822.84 11.06 212.86 3.97 2,661.01 -263.69 3.562 1,297.95 194.47 1,131.11 Pass - Major Risk 9,460.00 8,855.30 10,375.00 8,841.91 11.06 213.85 4.79 2,645.48 -268.20 3.562 1,281.74 194.31 1,116.26 Pass - Major Risk 9,460.00 8,855.30 10,400.00 8,860.91 11.06 214.83 5.62 2,629.90 -272.79 3.562 1,265.76 194.15 1,101.71 Pass - Major Risk 9,460.00 8,855.30 10,425.00 8,879.86 11.06 215.85 6.47 2,614:27 -277.46 3.562 1,250.01 193.94 1,087.53 Pass - Major Risk 9,460.00 8,855.30 10,450.00 8,898.74 11.06 216.86 7.34 2,598.59 -282.20 3.562 1,234.51 193.73 1,073.66 Pass - Major Risk 9,460.00 8,855.30 10,475.00 8,917.56 11.06 217.88 8.23 2,582.86 -287.03 3.562 1,219.27 193.54 1,060.12 Pass - Major Risk 9,460.00 8,855.30 10,500.00 8,936.31 11.06 218.89 9.13 2,567.07 -291.94 3.562 1,204.29 193.43 1,046.92 Pass - Major Risk 9,464.40 8,855.78 10,525.00 8,955.02 11.05 219.94 8.68 2,551.25 -296.91 3.562 1,189.53 182.22 1,031.92 Pass - Major Risk 9,465.14 8,855.86 10,550.00 8,973.68 11.05 220.98 9.39 2,535.38 -301.92 3.562 1,175.11 180.24 1,019.06 Pass - Major Risk 9,470.00 8,856.40 10,575.00 8,992.30 11.05 222.03 8.84 2,519.48 -306.96 3.562 1,161.06 168.33 1,004.61 Pass - Major Risk 9,470.00 8,856.40 10,600.00 9,010.87 11.05 223.07 9.83 2,503.53 -312.03 3.562 1,147.26 168.26 992.80 Pass - Major Risk 9,470.00 8,856.40 10,625.00 9,029.40 11.05 224.15 10.84 2,487.55 -317.15 3.562 1,133.78 168.16 981.38 Pass - Major Risk 9,470.00 8,856.40 10,650.00 9,047.87 11.05 225.22 11.87 2,471.51 -322.32 3.562 1,120.64 168.07 970.33 Pass - Major Risk 9,470.00 8,856.40 10,675.00 9,066.28 11.05 226.30 12.92 2,455.42 -327.53 3.562 1,107.84 167.99 959.65 Pass - Major Risk 9,470.00 8,856.40 10,700.00 9,084.63 11.05 227.38 13.99 2,439.28 -332.79 3.562 1,095.40 167.92 949.34 Pass - Major Risk 9,470.00 8,856.40 10,725.00 9,102.93 11.05 228.48 15.09 2,423.09 -338.09 3.562 1,083.33 167.81 939.41 Pass - Major Risk 9,470.00 8,856.40 10,750.00 9,121.19 11.05 229.59 16.20 2,406.86 -343.40 3.562 1,071.66 167.71 929.84 Pass - Major Risk 9,470.00 8,856.40 10,775.00 9,139.41 11.05 230.69 17.34 2,390.60 -348.74 3.562 1,060.41 167.62 920.64 Pass - Major Risk 9,470.00 8,856.40 10,800.00 9,157.59 11.05 231.80 18.51 2,374.29 -354.09 3.562 1,049.58 167.54 911.79 Pass - Major Risk 9,474.93 8,856.95 10,825.00 9,175.75 11.05 232.92 18.14 2,357.99 -359.51 3.562 1,039.14 157.57 901.28 Pass - Major Risk 9,480.00 8,857.52 10,850.00 9,193.93 11.05 233.93 17.76 2,341.73 -365.01 3.562 1,029.35 149.74 891.37 Pass - Major Risk 9,480.00 8,857.52 10,875.00 9,212.10 11.05 234.49 18.99 2,325.47 -370.54 3.562 1,020.00 149.59 883.85 Pass - Major Risk 9,480.00 8,857.52 10,900.00 9,230.27 11.05 235.05 20.23 2,309.22 -376.07 3.562 1,011.18 149.46 876.74 Pass - Major Risk 9,480.00 8,857.52 10,906.00 9,234.63 11.05 235.18 20.53 2,305.32 -377.40 3.562 1,009.14 149.43 875.08 Pass- Major Risk, CC, ES, SF CC - Min Centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38:04AM Page 4 COMPASS 5000.1 Build 81B Company: North America - ALASKA- BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 BP Travelling Cylinder Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Offset Design PB Z Pad - Z-23 - Z-23 Z-23 - Offset Site Error: 0.110 usft Survey Program: 111-GYO-GC-MS. 7484 -GCT -MS Rule Assigned: Major Risk 9 1 Offset Well Error. 0.00 usft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toolface+ Offset Wellbore Centre Casing - Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth -N/-S +E/ -W Hole Size Centre Distance Deviation (usft) (usft) (usft) (usft) (usft) (usft) (") (usft) (usft) (in) (usft) (usft) (usft) 9,173.23 8,798.44 9,725.00 9,032.25 10.24 10.81 75.73 1,619.57 961.70 4.875 1,259.33 85.41 1,174.89 Pass - Major Risk 9,175.00 8,799.25 9,750.00 9,051.20 10,24 10.87 76.13 1,632.20 972.00 4.875 1,276.81 85.19 1,192.61 Pass - Major Risk 9,183.16 8,802.92 9,775.00 9,070.16 10.26 10.93 76.28 1,644.83 982.29 4.875 1,294.46 84.63 1,210.30 Pass - Major Risk 9,187.90 8,804.99 9,800.00 9,089.12 10.27 10.99 76.55 1,657.46 992.59 4.875 1,312.31 84.30 1,228.31 Pass - Major Risk 9,189.57 8,805.71 9,809.00 9,095.95 10.28 11.02 76.65 1,662.01 996.29 4.875 1,318.78 84.19 1,234.85 Pass - Major Risk 11,000.00 8,871.42 7,725.00 7,480.52 16.91 3.69 105.45 599.61 230.02 9.062 1,414.49 94.10 1,352.07 Pass - Major Risk 11,000.00 8,871.42 7,750.00 7,499.95 16.91 3.75 104.68 613.63 237.12 9.062 1,398.35 94.23 1,335.59 Pass - Major Risk 11,000.00 8,871.42 7,775.00 7,519.38 16.91 3.80 103.88 627.65 244.26 9.062 1,382.48 94.35 1,319.36 Pass - Major Risk 11,000.00 8,871.42 7,800.00 7,538.82 16.91 3.85 103.07 641.64 251.43 9.062 1,366.88 94.45 1,303.38 Pass - Major Risk 11,000.00 8,871.42 7,825.00 7,558.28 16.91 3.88 102.23 655.60 258.62 9.062 1,351.53 94.51 1,287.70 Pass - Major Risk 11,000.00 8,871.42 7,850.00 7,577.76 16.91 3.91 101.38 669.53 265.80 9.062 1,336.45 94.54 1,272.28 Pass - Major Risk 11,000.00 8,871.42 7,875.00 7,597.27 16.91 3.93 100.52 683.42 272.96 9.062 1,321.63 94.55 1,257.12 Pass - Major Risk 11,000.00 8,871.42 7,900.00 7,616.80 16.91 3.97 99.63 697.28 280.13 9.062 1,307.08 94.60 1,242.18 Pass- Major Risk 11,000.00 8,871.42 7,925.00 7,636.36 16.91 4.01 98.72 711.10 287.31 9.062 1,292.83 94.67 1,227.48 Pass - Major Risk 11,000.00 8,871.42 7,950.00 7,655.94 16.91 4.07 97.80 724.86 294.53 9.062 1,278.87 94.79 1,213.02 Pass - Major Risk 11,000.00 8,871.42 7,975.00 7,675.54 16.91 4.13 96.86 738.59 301.77 9.062 1,265.22 94.91 1,198.84 Pass - Major Risk 11,000.00 8,871.42 8,000.00 7,695.16 16.91 4.20 95.89 752.28 309.02 9.062 1,251.90 95.04 1,184.94 Pass - Major Risk 11,000.00 8,871.42 8,025.00 7,714.78 16.91 4.27 94.91 765.96 316.29 9.062 1,238.93 95.20 1,171.36 Pass - Major Risk 11,000.00 8,871.42 8,050.00 7,734.41 16.91 4.36 93.91 779.63 323.57 9.062 1,226.33 95.39 1,158.09 Pass - Major Risk 11,000.00 8,871.42 8,075.00 7,754.02 16.91 4.45 92.88 793.30 330.88 9.062 1,214.13 95.60 1,145.18 Pass - Major Risk 11,000.00 8,871.42 8,100.00 7,773.63 16.91 4.54 91.84 806.97 338.21 9.062 1,202.34 95.80 1,132.67 Pass - Major Risk 11,000.00 8,871.42 8,125.00 7,793.21 16.91 4.63 90.77 820.66 345.56 9.062 1,190.99 96.01 1,120.56 Pass- Major Risk, CC, ES, SF CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38:04AM Page 5 COMPASS 5000.1 Build 81B Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 BP Travelling Cylinder Report Local Co-ordinate Reference: Well Z-23 TVD Reference: Mean Sea Level MD Reference: Z -23B @ 81.06usft (Doyon 16) North Reference: True Survey Calculation Method: Minimum Curvature Output errors are at 1.00 sigma Database: EDM R5K- Alaska PROD - ANCP1 Offset TVD Reference: Offset Datum Offset Design PB Z Pad - Z-23 - Z -23A - Z -23A Offset Site Error: 0.00 usft Survey Program: 100-GYD-GC-MS Rule Assigned: Major Risk Offset Well Error: 0.00 usft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toolface + Offset Wellbore Centre Casing - Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth +NI -S +E/ -W Hole Size Centre Distance Deviation (usft) (usft) (usft ) (usft) (usft) (usft) (`) (usft) (usft) (in) (usft) (usft) (usft) 9,186.09 8,804.20 9,225.00 8,826.51 8.66 646 72.62 1,247.91 -68.79 5.625 145.14 67.53 79.39 Pass - Major Risk, CC, ES, SF 9,200.12 8,810.14 9,250.00 8,850.20 8.69 6.51 78.80 1,255.51 -71.31 5.625 150.62 67.55 83.62 Pass - Major Risk 9,213.60 8,815.48 9,275.00 8,873.94 8.72 6.56 84.76 1,262.96 -73.69 5.625 158.50 67.63 90.84 Pass - Major Risk 9,226.39 8,820.22 9,300.00 8,897.75 8.75 6.62 90.32 1,270.25 -75.95 5.625 168.54 67.75 100.77 Pass - Major Risk 9,238.07 8,824.26 9,325.00 8,921.61 8.79 6.66 95.27 1,277.39 -78.08 5.625 180.55 67.86 113.11 Pass - Major Risk 9,248.29 8,827.56 9,350.00 8,945.53 8.81 6.71 99.52 1,284.38 -80.07 5.625 194.30 67.95 127.57 Pass- Major Risk 9,257.70 8,830.38 9,375.00 8,969.50 8.84 6.76 103.21 1,291.23 -81.92 5.625 209.59 68.06 143.71 Pass - Major Risk 9,266.28 8,832.78 9,400.00 8,993.53 8.87 6.81 106.43 1,297.93 -83.63 5.625 226.17 68.18 161.24 Pass - Major Risk 9,275.00 8,835.01 9,425.00 9,017.59 8.90 6.86 109.27 1,304.52 -85.22 5.625 243.85 68.31 179.80 Pass - Major Risk 9,280.00 8,836.19 9,450.00 9,041.67 8.91 6.90 111.81 1,311.06 -86.73 5.625 262.43 68.45 199.54 Pass - Major Risk 9,289.35 8,838.28 9,475.00 9,065.78 8.95 6.95 113.79 1,317.54 -88.16 5.625 281.73 68.60 219.71 Pass - Major Risk 9,297.02 8,839.90 9,500.00 9,089.89 8.97 6.98 115.53 1,324.00 -89.55 5.625 301.60 68.61 241.25 Pass - Major Risk 9,300.00 8,840.51 9,525.00 9,114.00 8.98 7.00 117.19 1,330.46 -90.95 5.625 321.97 68.59 263.46 Pass - Major Risk 9,305.74 8,841.60 9,550.00 9,138.11 9.00 7.03 117.67 1,336.92 -92.34 5.625 342.79 68.00 285.58 Pass - Major Risk 9,310.00 8,842.31 9,575.00 9,162.22 9.02 7.06 118.23 1,343.38 -93.74 5.625 364.06 67.40 308.22 Pass - Major Risk 9,310.00 8,842.31 9,580.00 9,167.04 9.02 7.07 118.48 1,344.67 -94.02 5.625 368.36 67.34 312.89 Pass - Major Risk 10,910.99 8,872.53 8,050.00 7,784.90 14.71 3.32 86.58 748.47 136.65 7.750 1,147.87 76.76 1,094.78 Pass - Major Risk 10,915.47 8,872.47 8,025.00 7,763.25 14.76 3.26 87.93 736.89 141.34 7.750 1,165.24 77.26 1,112.43 Pass - Major Risk 10,920.11 8,872.41 8,000.00 7,741.60 14.81 3.20 89.26 725.33 146.12 7.750 1,182.86 77.78 1,130.33 Pass - Major Risk 10,925.00 8,872.35 7,975.00 7,719.97 14.87 3.14 90.60 713.74 150.90 7.750 1,200.69 78.28 1,148.44 Pass - Major Risk 10,929.69 8,872.29 7,950.00 7,698.37 14.92 3.08 91.90 702.07 155.60 7.750 1,218.69 78.78 1,166.71 Pass - Major Risk 10,934.61 8,872.23 7,925.00 7,676.79 14.98 3.03 93.20 690.31 160.21 7.750 1,236.85 79.29 1,185.13 Pass - Major Risk 10,939.61 8,872.17 7,900.00 7,655.25 15.04 2.97 94.49 678.47 164.73 7.750 1,255.15 79.81 1,203.69 Pass - Major Risk 10,944.71 8,872.10 7,875.00 7,633.71 15.10 2.91 95.77 - 666.59 169.20 7.750 1,273.63 80.33 1,222.41 Pass - Major Risk 10,950.00 8,872.04 7,850.00 7,612.16 15.17 2.B6 97.06 654.72 173.63 7.750 1,292.30 80.86 1,241.31 Pass - Major Risk 10,955.15 8,871.97 7,825.00 7,590.60 15.23 2.80 98.31 642.78 177.84 7.750 1,311.13 81.36 1,260.37 Pass - Major Risk 10,960.29 8,871.91 7,800.00 7,569.04 15.30 2.75 99.55 630.71 181.62 7.750 1,330.08 81.85 1,279.54 Pass- Major Risk 10,965.31 8,871.85 7,775.00 7,547.46 15.36 2.69 100.76 618.52 184.92 7.750 1,349.16 82.33 1,298.85 Pass - Major Risk 10,970.16 8,871.79 7,750.00 7,525.87 15.42 2.63 101.95 606.23 187.69 7.750 1,368.38 82.81 1,318.28 Pass - Major Risk 10,975.00 8,871.72 7,725.00 7,504.27 15.49 2.57 103.13 593.82 189.78 7.750 1,387.70 83.25 1,337.82 Pass - Major Risk 10,979.04 8,871.67 7,700.00 7,482.68 15.54 2.51 104.21 581.28 191.04 7.750 1,407.10 83.62 1,357.44 Pass - Major Risk CC - Min Centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 512412016 1:38.04AM Page 6 COMPASS 5000.1 Build 81B BP Travelling Cylinder Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Well Z-23 Project: Prudhoe Bay TVD Reference: Mean Sea Level Reference Site: PB Z Pad MD Reference: Z -23B @ 81.06usft (Doyon 16) Site Error: 0.00 usft North Reference: True Reference Well: Z-23 Survey Calculation Method: Minimum Curvature Well Error: 0.00 usft Output errors are at 1.00 sigma Reference Wellbore Z -23C Database: EDM R5K- Alaska PROD - ANCP1 Reference Design: Z -23C WP02 Offset ND Reference: Offset Datum Offset Design PB Z Pad - Z-23 - Z -23B - Z -23B Offset site Error 0.00 usft Survey Program: 100-GYD-GC-MS, 6718-INC+TREND, 6810-MWD+IFR+MS-W0CA Rule Assigned: NOERRORS Offset Well Error: 0.00 usft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toofface + Offset Wellbore Centre Casing - Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth +N/ -S +E/ -W Hole Size Centre Distance Deviation (usft) (usft). (usft) (usft) (usft) (usft) (I (usft) (usft) (in) (usft) (usft) (usft) 9,175.00 8,799.25 9,175.00 8,799.25 0.03 0.01 -26.47 1,183.27 -196.44 0.000 0.00 0.11 0.00 Pass-NOERRORS 9,200.00 8,810.09 9,200.00 8,810.09 0.07 0.08 -28.14 1,203.28 -206.77 0.000 0.00 0.18 0.00 Pass - NOERRORS 9,225.00 8,819.72 9,225.00 8,819.72 0.19 0.15 -132.25 1,223.51 -217.86 0.000 0.00 0.27 0.00 Pass-NOERRORS 9,250.00 8,828.08 9,250.00 8,828.08 0.33 0.22 -133.37 1,243.98 -229.51 0.000 0.00 0.36 0.00 Pass-NOERRORS 9,275.00 8,835.01 9,275.00 8,835.01 0.49 0.30 -137.80 1,264.59 -241.84 0.000 0.00 0.46 0.00 Pass-NOERRORS 9,300.00 8,840.51 9,300.00 8,840.21 0.67 0.38 -22.95 1,285.36 -254.73 0.000 0.32 0.56 0.32 Pass - NOERRORS 9,324.93 8,844.13 9,325.00 8,843.60 0.88 0.46 34.80 1,306.47 -267.67 0.000 1.80 0.67 1.80 Pass-NOERRORS 9,349.06 8,845.57 9,350.00 8,845.23 1.11 0.54 41.10 1,327.67 -280.81 0.000 6.00 0.78 6.00 Pass - NOERRORS 9,371.67 8,847.07 9,375.00 8,845.47 1.34 0.62 29.46 1,348.62 -294.45 0.000 13.26 0.88 13.26 Pass - NOERRORS 9,392.03 8,848.66 9,400.00 8,845.14 1.59 0.71 20.74 1,369.66 -307.95 0.000 23.83 0.97 23.83 Pass-NOERRORS 9,410.00 8,850.24 9,425.00 8,844.51 1.83 0.80 13.94 1,390.53 -321.70 0.000 36.78 1.04 36.78 Pass-NOERRORS 9,426.20 8,851.79 9,450.00 8,843.66 2.07 0.89 8.12 1,410.91 -336.15 0.000 51.23 1.09 51.23 Pass - NOERRORS 9,440.88 8,853.27 9,475.00 8,842.80 2.30 0.99 3.01 1,430.36 -351.83 0.000 66.34 1.13 66.34 Pass-NOERRORS 9,454.56 8,854.71 9,500.00 8,842.19 2.53 1.10 -1.56 1,448.51 -369.00 0.000 81.58 1.17 81.58 Pass-NOERRORS 9,467.12 8,856.08 9,525.00 8,841.72 2.75 1.21 -5.63 1,465.76 -387.09 0.000 97.37 1.19 97.37 Pass - NOERRORS 9,480.00 8,857.52 9,550.00 8,841.46 2.99 1.33 -9.74 1,481.62 -406.40 0.000 113.17 1.21 113.17 Pass - NOERRORS, CC, ES, SI 9,490.00 8,858.66 9,575.00 8,841.27 3.17 1.46 -12.96 1,496.17 -426.72 0.000 129.02 1.22 129.02 Pass-NOERRORS 9,500.00 8,859.81 9,600.00 8,840.99 3.35 1.59 -16.22 1,509.65 -447.77 0.000 145.17 1.23 145.17 Pass - NOERRORS 9,510.00 8,860.96 9,625.00 8,840.45 3.54 1.74 -19.55 1,522.29 -469.33 0.000 161.76 1.23 161.76 Pass-NOERRORS 9,520.00 8,862.12 9,650.00 8,839.59 3.72 1.89 -22.97 1,533.78 -491.52 0.000 178.50 1.23 178.50 Pass-NOERRORS 9,530.00 8,863.28 9,675.00 8,838.50 3.89 2.04 -26.45 1,543.83 -514.38 0.000 195.11 1.21 195.11 Pass-NOERRORS 9,536.51 8,864.03 9,700.00 8,837.32 4.00 2.21 -28.84 1,552.49 -537.80 0.000 211.56 1.21 211.56 Pass-NOERRORS 9,544.62 8,864.96 9,725.00 8,836.30 4.13 2.39 -31.67 1,559.81 -561.67 0.000 227.90 1.20 227.90 Pass-NOERRORS 9,552.53 8,865.86 9,750.00 8,835.71 4.25 2.57 -34.33 1,565.58 -585.99 0.000 243.91 1.18 243.91 Pass-NOERRORS 9,560.00 8,866.71 9,775.00 8,834.93 4.35 2.76 -36.90 1,569.86 --610.60 0.000 259.68 1.16 259.68 Pass - NOERRORS 9,570.00 8,867.84 9,800.00 8,833.76 4.46 2.95 -40.33 1,573.16 -635.35 0.000 275.64 1.13 275.64 Pass-NOERRORS 9,574.50 8,868.34 9,825.00 8,833.08 4.49 3.16 -41.90 1,575.95 -660.19 0.000 291.93 1.12 291.93 Pass - NOERRORS 9,580.00 8,868.96 9,850.00 8,833.21 4.54 3.39 -43.63 1,577.86 -685.11 0.000 308.29 1.10 308.29 Pass-NOERRORS 9,590.00 8,870.07 9,875.00 8,833.32 4.59 3.62 -46.80 1,578.00 -710.10 0.000 324.10 1.06 324.10 Pass-NOERRORS 9,594.45 8,870.56 9,900.00 8,833.08 4.59 3.87 -48.33 1,576.34 -735.04 0.000 339.29 1.04 339.29 Pass-NOERRORS 9,600.00 8,871.16 9,925.00 8,832.34 4.60 4.11 -50.28 1,573.08 -759.81 0.000 354.08 1.02 354.08 Pass - NOERRORS 9,610.00 8,872.24 9,950.00 8,831 AS 4.58 4.37 -53.67 1,568.35 -784.34 0.000 368.49 0.96 368.49 Pass-NOERRORS 9,613.58 8,872.62 9,975.00 8,830.85 4.56 4.70 -54.97 1,562.78 -808.70 0.000 382.91 0.95 382.91 Pass-NOERRORS 9,620.00 8,873.29 10,000.00 8,831.00 4.53 5.38 -57.04 1,557.37 -833.11 0.000 398.16 0.91 398.16 Pass - NOERRORS 9,625.32 8,873.84 10,025.00 8,831.50 4.49 6.13 -58.72 1,550.59 -857.16 0.000 412.94 0.89 412.94 Pass-NOERRORS 9,630.00 8,874.32 10,050.00 8,832.20 4.46 6.57 -60.17 1,543.12 -881.01 0.000 427.85 0.86 427.85 Pass-NOERRORS 9,638.77 8,875.20 10,075.00 8,832.83 4.39 6.79 -61.94 1,535.07 -904.67 0.000 442.91 0.84 442.91 Pass - NOERRORS 9,650.00 8,876.30 10,100.00 8,833.04 4.31 6.99 -63.20 1,526.76 -928.24 0.000 458.27 0.83 458.27 Pass-NOERRORS 9,658.70 8,877.15 10,125.00 8,832.67 4.24 7.16 -64.23 1,518.84 -951.95 0.000 474.40 0.83 474.40 Pass-NOERRORS 9,668.16 8,878.05 10,150.00 8,832.30 4.17 7.33 -65.34 1,510.72 -975.60 0.000 490.75 0.82 490.75 Pass - NOERRORS 9,675.00 8,878.70 10,175.00 8,832.18 4.13 7.48 -66.12 1,502.65 -999.25 0.000 507.48 0.82 507.48 Pass-NOERRORS 9,686.07 8,879.74 10,200.00 8,833.01 4.05 7.63 -67.25 1,494.92 -1,023.01 0.000 524.70 0.81 524.70 Pass - NOERRORS 9,694.34 8,880.50 10,225.00 8,835.14 4.00 7.77 -67.93 1,487.82 -1,046.88 0.000 542.52 0.82 542.52 Pass-NOERRORS 9,700.00 8,881.01 10,250.00 8,838.59 3.96 7.92 -68.19 1,481.62 -1,070.85 0.000 561.01 0.83 561.01 Pass-NOERRORS 9,709.27 8,881.84 10,275.00 8,843.50 3.91 8.06 -68.71 1,475.91 -1,094.68 0.000 579.75 0.83 579.75 Pass - NOERRORS 9,716.09 8,882.45 10,300.00 8,850.07 3.87 8.20 -68.84 1,470.64 -1,118.22 0.000 598.58 0.83 598.58 Pass - NOERRORS 9,725.00 8,883.23 10,325.00 8,858.22 3.83 8.33 -69.08 1,465.91 -1,141.37 0.000 617.49 0.84 617.49 Pass-NOERRORS 9,725.00 8,883.23 10,350.00 8,867.86 3.83 8.46 -68.24 1,461.79 -1,164.06 0.000 636.46 0.88 636.46 Pass-NOERRORS CC - Min Centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38.04AM Page 7 COMPASS 5000.1 Build 81B Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 BP Travelling Cylinder Report Local Co-ordinate Reference: Well Z-23 TVD Reference: Mean Sea Level MD Reference: Z -23B @ 81.06usft (Doyon 16) North Reference: True Survey Calculation Method: Minimum Curvature Output errors are at 1.00 sigma Database: EDM R5K - Alaska PROD - ANCP1 Offset TVD Reference: Offset Datum Offset Design PB Z Pad - Z-23 - Z Z -23B - -23B Offset Site Error: 0.00 usft Survey Program: 100-GYD-GC-MS, 671a4NC+TREND, 6810-MWD+IFR+MS-WOCA Rule Assigned: NOERRORS Offset Well Error: 0.00 usft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toolface+ Offset Wellbore Centre Casing - Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth +N/ -S +EI -W Hole Size Centre Distance Deviation (usft) (usft) (usft) (usft) (usft) (usft) (°) (usft) (usft) (in) (usft) (usft) (usft) 9,733.72 8,883.97 10,375.00 8,878.82 3.79 8.58 -68.29 1,458.14 -1,186.23 0.000 655.36 0.89 655.36 Pass - NOERRORS 9,738.97 8,884.42 10,400.00 8,890.70 3.77 8.70 -67.93 1,454.37 -1,207.90 0.000 674.08 0.91 674.08 Pass-NOERRORS 9,750.00 8,885.34 10,425.00 8,902.82 3.73 8.80 -68.24 1,450.35 -1,229.39 0.000 692.92 0.92 692.92 Pass - NOERRORS 9,750.00 8,885.34 10,450.00 8,914.96 3.73 8.90 -67.39 1,446.17 -1,250.85 0.000 711.84 0.96 711.84 Pass - NOERRORS 9,750.00 8,885.34 10,475.00 8,927.47 3.73 8.99 -66.54 1,442.21 -1,272.12 0.000 731.05 1.00 731.05 Pass-NOERRORS 9,758.30 8,886.01 10,500.00 8,941.08 3.70 9.10 -66.57 1,438.82 -1,292.81 0.000 750.19 0.37 750.19 Pass-NOERRORS 9,762.57 8,886.36 10,525.00 8,955.12 3.69 9.26 -66.16 1,435.30 -1,313.20 0.000 769.35 5.05 769.35 Pass - NOERRORS 9,766.70 8,886.69 10,550.00 8,969.15 3.68 9.42 -65.78 1,431.77 -1,333.58 0.000 788.77 10.38 788.77 Pass - NOERRORS 10,680.00 8,883.40 8,275.00 8,052.04 10.59 0.00 108.59 736.20 -62.08 0.000 875.24 5.38 875.24 Pass-NOERRORS 10,692.57 8,882.31 8,250.00 8,028.80 10.85 0.00 107.73 727.47 -59.08 0.000 895.14 5.43 895.14 Pass-NOERRORS 10,704.58 8,881.32 8,225.00 8,005.60 11.10 0.00 106.93 718.68 -56.06 0.000 915.12 5.48 915.12 Pass - NOERRORS 10,716.05 8,880.42 8,200.00 7,982.41 11.33 0.00 106.20 709.82 -53.03 0.000 935.19 5.53 935.19 Pass-NOERRORS 10,726.98 8,879.61 8,175.00 7,959.25 11.55 0.00 105.52 700.93 -49.99 0.000 955.36 5.57 955.36 Pass - NOERRORS 10,737.40 8,878.88 8,150.00 7,936.09 11.75 0.00 104.90 692.00 -46.95 0.000 975.64 5.60 975.64 Pass - NOERRORS 10,747.33 8,878.21 8,125.00 7,912.96 11.94 0.00 104.32 683.03 -43.91 0.000 996.02 5.63 996.02 Pass-NOERRORS 10,756.80 8,877.61 8,100.00 7,889.84 12.11 0.00 103.80 674.03 -40.86 0.000 1,016.50 5.66 1,016.50 Pass - NOERRORS 10,765.82 8,877.07 8,075.00 7,866.72 12.28 0.00 103.31 665.01 -37.81 0.000 1,037.10 5.69 1,037.10 Pass-NOERRORS 10,774.42 8,876.59 8,050.00 7,843.62 12.44 0.00 102.87 655.96 -34.75 0.000 1,057.80 5.71 1,057.80 Pass - NOERRORS 10,782.62 8,876.15 8,025.00 7,820.52 12.58 0.00 102.46 646.89 -31.69 0.000 1,078.62 5.73 1,078.62 Pass - NOERRORS 10,790.47 8,875.76 8,000.00 7,797.46 12.72 0.00 102.09 637.73 -28.64 0.000 1,099.49 5.75 1,099.49 Pass - NOERRORS 10,798.00 8,875.40 7,975.00 7,774.46 12.86 0.00 101.75 628.41 -25.59 0.000 1,120.40 5.77 1,120.40 Pass-NOERRORS 10,805.21 8,875.08 7,950.00 7,751.52 12.98 0.00 101.45 618.96 -22.56 0.000 1,141.35 5.78 1,141.35 Pass-NOERRORS 10,812.12 8,874.79 7,925.00 7,728.63 13.10 0.00 101.17 609.38 -19.53 0.000 1,162.34 5.79 1,162.34 Pass-NOERRORS 10,818.73 8,874.53 7,900.00 7,705.75 13.21 0.00 100.92 599.77 -16.49 0.000 1,183.42 5.81 1,183.42 Pass - NOERRORS 10,825.04 8,874.30 7,875.00 7,682.87 13.32 0.00 100.69 590.16 -13.44 0.000 1,204.62 5.82 1,204.62 Pass - NOERRORS 10,831.09 8,874.09 7,850.00 7,660.00 13.42 0.00 100.48 580.56 -10.37 0.000 1,225.93 5.82 1,225.93 Pass-NOERRORS 10,836.84 8,873.90 7,825.00 7,637.11 13.51 0.00 100.29 570.98 -7.33 0.000 1,247.36 5.83 1,247.36 Pass-NOERRORS 10,842.18 8,873.74 7,800.00 7,614.16 13.60 0.00 100.14 561.47 -4.46 0.000 1,268.95 5.84 1,268.95 Pass - NOERRORS 10,547.12 8,873.60 7,775.00 7,591.16 13.68 0.00 100.03 552.05 -1.79 0.000 1,290.71 5.84 1,290.71 Pass - NOERRORS 10,851.68 8,873.49 7,750.00 7,568.10 13.75 0.00 99.94 542.72 0.68 0.000 1,312.63 5.85 1,312.63 Pass - NOERRORS 10,855.97 8,873.38 7,725.00 7,545.01 13.82 0.00 99.88 533.42 3.06 0.000 1,334.67 5.87 1,334.67 Pass-NOERRORS 10,860.09 8,873.29 7,700.00 7,521.94 13.88 0.00 99.83 524.11 5.45 0.000 1,356.78 5.88 1,356.78 Pass-NOERRORS 10,864.06 8,873.20 7,675.00 7,498.87 13.94 0.00 99.78 514.77 7.84 0.000 1,378.96 5.89 1,378.96 Pass - NOERRORS 10,867.88 8,873.13 7,650.00 7,475.81 14.00 0.00 99.74 505.41 10.25 0.000 1,401.21 5.90 1,401.21 Pass-NOERRORS CC - Min Centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5724/2016 1:38:04AM Page 8 COMPASS 5000.1 Build 81B Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 BP Travelling Cylinder Report Local Co-ordinate Reference: ND Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset ND Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Offset Design PB Z Pad - Z-50 - Z-50 - Z-50 Offset site Error. U0 usft Survey Program: 89-GYD-GC-SS, 587-MWD+IFR+MS-WOCA, 3216-INC+TREND, 3310-MWD+IFR+MSWOCA, 6949-MWD+IFR+M: Rule Assigned: Major Risk Offset Well Error: 0.00 usft Reference Offset Semi Major Axis Measured Vertical Depth Depth (usft) (usft) Measured Vertical Reference Offset Depth Depth (usft) (usft) (usft) (usft) Toolface + Azimuth (°) Offset Wellbore +N/ -S (usft) Centre Casing - +E/ -W Hole Size (usft) (in) Centre to Centre (usft) No Go Distance (usft) Allowable Warning Deviation (usft) 10,775.00 8,876.56 8,625.00 8,29921 14.66 7.19 -179.11 -740.62 -636.83 5.687 1422.14 84.26 1,341.68 Pass - Major Risk 10,775.00 8,876.56 8,650.00 8,319.85 14.66 7.25 -178.24 -743.63 -650.60 5.687 1,421.90 84.46 1,340.94 Pass - Major Risk, CC, ES, SF CC - Min Centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38.04AM Page 9 COMPASS 5000.1 Build 81B BP Travelling Cylinder Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Project: Prudhoe Bay ND Reference: Reference Site: PB Z Pad MD Reference: Site Error: 0.00 usft North Reference: Reference Well: Z-23 Survey Calculation Method: Well Error: 0 00 usft Output errors are at Reference Wellbore Z -23C Database: Reference Design: Z -23C WP02 Offset ND Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1 00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum teference Depths are relative to Z -23B @ 81.06usft (Doyon 16) Coordinates are relative to: Z-23 Dffset Depths are relative to Offset Datum Coordinate System is US State Plane 1927 (Exact solution), Alaska Zone 04 -entral Meridian is 150' 0' 0.000 W Grid Convergence at Surface is: 0.76 ' CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38.04AM Page 10 COMPASS 5000.1 Build 81B Ladder Plot 1400- 400 1050 1050- --- - ------ - - --- - .0 m CL-- - - - ------------------ W - -------- -'-- -- = 700 m U 0 C) 350 , . --------------------------------------------'-- -- - -- ------ : 0 0 2000 4000 6000 8000 10000 12000 Measured Depth LEGEND -� CHEV181112,CHEV181112,CHEV181112V1 —F Z-23,Z-23A,Z-23AV2 -$- Z -50,Z -50,Z -50V0 $ Z -23,Z -23,Z -23V3 Z-23,Z-23B,Z-23BV7 CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38.04AM Page 10 COMPASS 5000.1 Build 81B Company: Project: Reference Site: Site Error: Reference Well: Well Error: Reference Wellbore Reference Design: North America - ALASKA - BP Prudhoe Bay PB Z Pad 0.00 usft Z-23 0.00 usft Z -23C Z -23C WP02 BP Travelling Cylinder Report Local Co-ordinate Reference: ND Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset ND Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Reference Depths are relative to Z -23B @ 81.06usft (Doyon 16) Coordinates are relative to: Z-23 Offset Depths are relative to Offset Datum Coordinate System is US State Plane 1927 (Exact solution), Alaska Zone 04 Central Meridian is 150° 0'0.000 W Grid Convergence at Surface is: 0.76 ° Separation Factor Plot 9.00 i pry{, - - - - - - - - - - - cc 6.00— LL .00 m - - - - - - - - - - - - - - - - - - - - - 3.00 - - - 0.00 0 2000 4000 6000 8000 10000 Measured Depth LEGEND '.- CHEV181112,CHEV181112,CHEV181112V1 - Z-23,Z-23A,Z-23AV2 -8- Z -50,Z -50,Z -50V0 -0- Z -23,Z -23,Z-23 V3 Z-23,Z-23B,Z-23B V7 CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38:04AM Page 11 COMPASS 5000.1 Build 81B Company: North America - ALASKA - BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00 usft Reference Well: Z-23 Well Error: 0.00 usft Reference Wellbore Z -23C Reference Design: Z -23C WP02 BP Travelling Cylinder Report Local Co-ordinate Reference: ND Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset ND Reference: Well Z-23 Mean Sea Level Z -23B @ 81.06usft (Doyon 16) True Minimum Curvature 1.00 sigma EDM R5K- Alaska PROD - ANCP1 Offset Datum Ierence Depths are relative to Z -23B @ 81.06usft (Doyon 16) Coordinates are relative to: Z-23 Tset Depths are relative to Offset Datum Coordinate System is US State Plane 1927 (Exact solution), Alaska Zone 04 antral Meridian is 150° 0'0.000 W Grid Convergence at Surface is: 0.76 ° Travelling Cylinder Not 1995 330 30 1710 9460 300 855 570 9739 9594 285 270 l 11000 285 10783 570 855 240 1140 1425 1710 _ 210 150 1995 180 Azimuth from North [°] vs Centre to Centre Separation [950 usfUin] LEGEND CHEV181112,CFEV181112,CHEV181112V1 -E- Z-23,Z-23A,Z-23AV2 Z-23, Z-23, Z-23 V3 Z-23, Z -23B, Z -23B V7 We M 120 Z-50, Z-50, Z-50 V0 CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation 5/24/2016 1:38.04AM Page 12 COMPASS 5000.1 Build 818 NORDIC CTD UNIT # 2 CHOKE / REEL / CIRCULATION MANIFOLD DIAGRAM — q Cho eP�nel Standpipe 2" Circulation Line Driller GauOeM10 MMMB Manual Chlke p il calista CIRCULATING MANIFOLD MM9 MM T6 MM 15 SLB Transducer MMB PVT Sensor I MM7 I MM 13 Baker Choke I MM 4 MM 17 KILL SIDE MANUAL VALVE CHOKE SIDE KILL NCR MANUAL VALVE f Alr Blow down MM 12 MM14 ReV Cir Line \ / CHOKE HCR MM �w f I Coiled Tubing Choke Line I Ba rChoke 101fune e I MP2 MP1 4 �- — — — — — — — — — — — J KIII Line I ♦ I \ BOP 18 I HP 11 MP 10 Trand}ueers COILED TUBING I BOP17 I CIRCULATING SYSTEM ( MP 14 HP 18 IP 19 HP9 HPB I I '.siavEres. I To Inner Reel HPHP 13 HP7 HPS HP4 HPJ Valve Ii I H 2 HP2 HP1 II �I HP 18 cement line N2 SLB . - - I U`17 N2 TriFlow • CM 85 CHOKE MANIFOLD Gauge MG5 CM 28 GAS BUSTER -�1 Test Pump Inlet CM JO " CMJ �r Flow f/ HC HDYGauae PBT 4WaV Block'r CM14 CM7 .� CMB CM24 Note: L I CMS CMB C 1T P82 liquid eg is Baker Choke Line 10' from wal PBJ ti high - CM13 CM7 1 / CM15 CM2 CM28ei CM4 CM17 Cern CM21 I 1 CM25 CM20 CM22 CM23 I CM26 Tiger Tank I / CM16 CUTTINGS BO% I _. CM2I / CM79 I / TIGER TANK I / I �' I TRANSMITTAL LETTER CHECKLIST WELL NAME: PTD: & " � f i Development _ Service _ Exploratory _ Stratigraphic Test _ Non -Conventional FIELD: POOL: �- Check Box for Appropriate Letter / Paragraphs to be Included in Transmittal Letter CHECK OPTIONS TEXT FOR APPROVAL LETTER MULTI The permit is for a new wellbore segment of existing well Permit LATERAL No. , API No. 50- - - - (If last two digits Production should continue to be reported as a function of the original in API number are API number stated above. between 60-69) 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 Pilot Hole name ( PH) and API number (50- - - -� from records, data and logs acquired for well (name onpermit). The permit is approved subject to full compliance with 20 AAC 25.055. Approval to produce/inject is contingent upon issuance of a conservation Spacing Exception order approving a spacing exception. (Company Name) Operator assumes the liability of any protest to the spacing exception that may occur. All dry ditch sample sets submitted to the AOGCC must be in no greater Dry Ditch Sample than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Please note the following special condition of this permit: production or production testing of coal bed methane is not allowed for Non -Conventional (name of well) until after (Company Name) has designed and Well implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the AOGCC to obtain advance approval of such water well testing program. Regulation 20 AAC 25.071(a) authorizes the AOGCC to specify types of well logs to be run. In addition to the well logging program proposed by (Company Name) in the attached application, the following well logs are also required for this well: Well Logging Requirements Per Statute AS 31.05.030(d)(2)(B) and Regulation 20 AAC 25.071, composite curves for well logs run must be submitted to the AOGCC within 90 days after completion, suspension or abandonment of this well. Revised 2/2015 WELL PERMIT CHECKLIST Field & Pool PRUDHOE BAY, PRUDHOE OIL - 640150 Well Name: PRUDHOE BAY UNIT Z -23C _ Program DEV _ Well bore seg ❑ PTD#: 2160810 Company BP EXPLORATION (ALASKA) INC. Initial Class/Type DEV/PEND GeoArea 890 _ _ _ Unit 11650 On/Off Shore On Annular Disposal El 1 Permit fee attached_ - - - - No_ Geologic 2 Lease number appropriate_ Yes - Entire Well lies within ADL0028262._ - - - - - . - 3 Unique well_ name and number - - - Yes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - 4 Well located in_a_defined_pool - - - - - - - Yes - - - PRUDHOE BAY, PRUDHOE OIL POOL - 64015, governed by CO -341F - - - - - 5 Well located proper distance from drilling unit_boundary_ _ - - _ - - - - - - Yes _ CO 341_F, Rule 2:_ There shall be no restrictions_ as tQ well_ spacing_ except that_nopay shall be - - - - - - - - 6 Well located proper distance. from other wells- - - - - - - - - - - - - - - - - - - - - - - - - - - - Yes - - - - - _ - opened in a well closer than 500 feet to -the boundary_ of the -affected -area. Planned well conforms to CO 7 Sufficient acreage_availablein_drillingunit - - - _ Yes_ _ _ _ _ 341 F4 Rule 2-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8 If -deviated, is wellbore plat -included - - - - Yes - - _ - - 9 Operator only affected party- - - - - - - - - - - Yes - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - 10 Operator has_ appropriate bond in force - - - _ Yes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11 Permit_ can be issued without conservation order_ - - - - - - - - - - - - - - - - - - Yes_ - -- --- -- - - - - - - - - - - - -- - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - Appr Date 12 Permit can be issued without administrative_ approval - - - - - - - - . Yes _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - - - - - - - - - - - - - - - - 13 Can permit be approved before 15-day_wait ------- - - - - - - - - - - - - - - - - Yes - - - - - - - -. - - - - - - - - - - - - - - - - - - - - - - - - - SFD 6/8/2016 14 Well located within area arid -strata authorized by Injection Order # (put 10# in -comments) (For- NA_ - - . - - - - - - 15 All wells -within 1/4_mile area -of review identified (For service well only) - NA_ - - - - - - - - - - - - - - - - - - - - - - - - - - - 16 Pre -produced injector: duration -of pre production less than 3 months_ (FQr service well only) NA_ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17 Nonconven. gas conforms to AS31.05,030(j.1_.A),0 2.A -D) NA- - - - - - - - - - - - - - - - Conductor stringprovided- - - - . --- NA_ Set in original well Z-23 Engineering .18 19 Surface casing protects all -known USDWs - NA_ Set in original well Z-23 - 20 CMT_ vol_ adequate_ to circulate -on conductor & surf_csg . -- NA_ - Set in original well Z-23 - - - - - - - - - 21 CMT_ vol_ adequate_ to tie -in -long string to surf csg_ NA_ _ _ _ _ Set in original well Z-23 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . - - - 22 CMT_will cover -all known_productive horizons_ - - - - - - - - - - - - Yes - - - _ sidetrack will ce_ment_liner_in place_ _ _ 23 Casing designs adequate for C,_T, B &_ permafrost_ _ _ _ Yes - - - - - - - - - - - - - - - - - - - - - - - - - - - 24 Adequate tankage, or reserve pit Yes rig has steel_pits - - - - - 25 If -a- re -drill, has_a 10-403 for abandonment been approved _ Yes _ _ _ _ _ _ _ Sundry -316-318 - - - - - - - - - -- - - - - - - - - - - - - - - - - 26 Adequate wellbore separation _proposed Yes proximity_ analysis performed - - - - - - - . 27 If_diverter required, does it meet regulations. _ _ - - - - - - NA Wellhead in place, BOPE to be installed Appr Date 28 _Drilling fluid_ program schematic_& equip -list adequate- Yes Max Formation Pressure @_8795' TVDSS is 8,0_ PPG EMW MJQ 7/6/2016 29 BOPEs,.do they meet regulation - - - Yes . - - - - - . - 30 _B_OPE-press rating appropriate; test to -(put prig in comments)_ Yes - - - - . MASP is 2779 psi, 3500_psig BOPE_test - _ _ - - - - 31 Choke manifold complies w/API_RP-53 (May 84)_ Yes _ _ _ _ - - - - - _ 32 Work will occur without operation shutdown_ Yes - - - - _ - Coil_tubning sidetrack in zone _ - - - - - - - - - - 33 Is presence. of 1-12S gas probable _ - Yes - - - - H2S measures required - - - . - �34 Mechanical -condition of wells within AOR verified (For service well only) NA_ - - - - - - - - - - - - - - - -- - - 35 Permit_can be issued w/o hydrogen_ sulfide measures No _ - _ _ _ _ Z -Pad wells are_H2S-bearing, H2S measures are required. _ - Geology 36 -Data- presented on potential overpressure zones. Yes Planned drilling mud program _(8.4_ppg)_appears _adequate -to control -operator's forecast Date 37 Seismic_ analysis_ of shallow gas -zones- - - - _ - -- - - - - .. NA_ - - - - -- pore pressure -gradient (about 8.0 ppg)._Should higher pore pressures be encountered,- _ - Appr SFD 6/8/2016 38 Seabed condition survey -(if off -shore) - - - - NA_ BP has -immediate access to nearby fluid -mixing facilities.. 39 Contact name/phone for weekly. reports_ [exploratory only] -- NA_ - Geologic Date: Engineering Public Date Date Commissioner: Commissioner: Commissioner OTS