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217-117
STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon ❑ Plug Perforations ❑ Fracture Stimulate ❑ Pull Tubing ❑ Operations shutdown ❑ Suspend ❑ Perforate 0 Other Stimulate ❑ Alter Casing ❑ Change Approved Program ❑ Plug for Redrill ❑ Perforate New Pool ❑ Repair Well ❑ Re-enter Susie Well ❑ Other: Well Work Platform 0 2. Operator Name: BP Exploration (Alaska), Inc 4. Well Class Before Work Development 21 Exploratory ❑ 5. Permit to Drill Number: 217117 3. Address: P.O. Box 196612 Anchorage, AK 99519-6612 Stratigraphic ❑ Service 11 6. API Number: 50-029-21435-01-00 1 7 Property Designation (Lease Number): ADL 028324, 028325 & 026322 S. Well Name and Number: PBU 04-21A 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: Al (E 7 Total Depth: measured 15202 feet Plugs measured None feet JAN JAN V ! true vertical 8653 feet Junk measured None feet Effective Depth: measured 15166 feet Packer measured 12144, 12173 feet %%��, r/�' //�� Itw�$ true vertical 8654 feet Packer true vertical 8116,8134 feet .Q-l`�i'G C iJ Casing: Length: Size: MD: TVD: Burst Collapse: Structural Conductor 80 20" 39-119 39-119 1490 470 Surface 2351 13-3/e" 38-2389 38-2356 3450/5380 1950/2670 Intermediate 12533 9-5/8" 36-12569 36-8393 6870 4760 Liner 453 7" 12244 - 12697 8179-8480 8150 7020 Liner 3043 3-1/2" x 3-1/4" x 2-7/8" 12159 - 15202 8125-8653 Perforation Depth: Measured depth: 13120 - 15164 feet True vertical depth: 8692-8654 feet Tubing (size, grade, measured and true vertical depth) 4-1/2' 12.6#x 5-1/2" 17#, 13Cr80 / L-80 34-12280 34-8202 Packers and SSSV (type, measured and 4-1/2" Baker S-3 Perm Packer 12144 8116 true vertical depth) 5-1/2" BOT 3-H Packer 12173 8134 12. Stimulation or cement squeeze summary: Intervals treated (measured): 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: 462 17486 460 0 261 Subsequent to operation: 735 3407 744 1522 78 14.Attachments: (required cer 20 enc 26070.25.071. s 25.2es) 15. Well Class after work: Daily Report of Well Operations 0 Exploratory ❑ Development 0 Service ❑ Stratigraphic ❑ 16. Well Status after work: Oil 0 Gas ❑ WDSPL ❑ Copies of Logs and Surveys Run ❑ Printed and Electronic Fracture Stimulation Data ❑ 1 GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUG ❑ 17. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if G.O. Exempt: 319-540 Authorized Name: Sidoti, Todd Contact Name: Sidoti, Todd Authorized Title: Well Intervention Engineer Contact Email: Todd.Sidotiobp.com Authorized Signature: Date: I lb I (0/ Contact Phone: +1 907 564 5113 Form 10-404 Revised 04/2017 %/Aw m&D_tq3WRBDMSL ' JAN 10 2020 Submit Original Only IN Daily Report of Well Operations PBU 04-21A GCTI VIT V nGTF m IRA w nv ***WELL S/I ON ARRIVAL***(add pert) DRIFTED TBG W/ 20'x 3.70" DUMMY WHIPSTOCK TO 2500' SLM.(no issues) DRIFTED LINER W/ 23'x 2.16" DUMMY GUNS & 6'x 2.25" DRIVE DOWN BAILER TO DOGLEG @ 12,871' SLM.(no sample) ***WELL S/I ON DEPARTURE, DSO NOTIFIED OF WELL STATUS*** ***DRIFT TO 2500' SLM W/ 20'X 3.70" DUMMY WHIPSTOCK FOR SUBSIDENCE 11/25/2019 SURVEILLANCE*** CTU #9 1.75" coil 0.156WT Objective: Drift. Well kill method pre WWP MIRU. Get tanks spotted after unit spotted. 12/8/2019 ***In progress*** CTU #9 1.75" coil 0.156WT Objective: Drift. Well kill method pre WWP Continue RU..L&K well with slick 1%KCL w/safelube. 38bbl of 60/40 for FP. Able to pump into the well at 0.5bpm (MCFR) with 0 psi WHP. RIH with 2.0" DJN drift, tag TD @ 15153' CTM. POOH 12/9/2019 'Complete' T/l/O = SSV/410/60. Temp = SI. IA FL (CT request). ALP = 410 psi, SI @ CV. IA FL @ 6911' (sta # 3 SO). 12/10/2019 Rig up in control of valves upon departure. 09:30 CTU #9 1.75" coil 0.156WT Objective: Klondike perforating 1.56" guns Standby for Klondike being rigged up. 12/11/2019 ***In ro ress*** TWO = Vac/400/0. Set 4" CIW 'H' TWC #443 and PT to 350/3500psi (PASS) Set VR plug, Remove Companion side IA valve and install Tapped blind flange. Torque to API specs. PT to 350/3500 (PASS) RDMO ***Job Complete*** SEE LOG FOR DETAILS Note: TWC sign hung on MV. MV = 12/11/2019 0. SSV/WV/SV = C. IA = C. OA = OTG. CTU #9 1.75" coil 0.156WT Objective: Klondike perforating 1.56" guns Standby for Klondike RU. 12/12/2019 ***In progress' CTU #9 1.75" coil 0.156WT Objective: Klondike perforating 1.56" guns MIRU. State Unwitnessed BOP test. 12/13/2019 ***In progress*** CTU #9 1.75" coil 0.156WT Objective: Klondike perforating 1.56" guns Continue unwitnessed bop test. MU & RIH w/ HES logging tools. Log from 15024 to 12700'. POOH. Confirm good data. +27' correction. 12/14/2019 ***In progress" Daily Report of Well Operations PBU 04-21A CTU #9 1.75" coil 0.156WT Objective: Klondike perforating 1.56" guns Confirm data +27' correction. D1 tripping drill/evac drill. L&K well with 1.5x's WBV. MU & RIH w/ perf guns. Perforate from 13220'-14057' & 14502-14688' using HES 1.56" perfecta, 6spf. POH. LD guns. 12/15/2019 ***In progress*** CTU#9 1.75" coil 0.156WT Objective: Klondike perforating 1.56" guns. Undeploy HES 1.56" perfecta guns. FP well w/ 38bbl. RDMO. 12/16/2019 ***Complete*** T/I/O=TWC/400/0. Post well work platform. RU 2" companion IA, Torqued to API specs.188 FT/LBS. PT 300 psi low and 3500 psi high (PASSED). Pulled 2" VR plug. Install tapped blind flange. Torqued to API specs. 253 FT/LBS.PT'd to 2500 psi. (PASSED) Pulled CIW 4" "H" TWC #443 @125" installed tree cap PT'd to 500 psi. (PASSED) ***JOB COMPLETE***. See log for details. Final 12/20/2019 WHP's=VAC/400/0. LRS Test Unit 1, Post AdPerf Flowback, Begin WSR on 12/23/19, Unit Move, RU,PT,Pop Flow 12/23/2019 Flow, Continue WSR on 12/24/19 LRS Test Unit 1, Post AdPerf Flowback, Continue WSR from 12/23/19, Stabilize / Flow / SB for PD, 12/24/2019 WSR on 12/25/19 LRS Test Unit 1, Post Adperf Flowback, Begin WSR 12/29/30, Get ready to Pop, SB for DSO, 12/29/2019 Continued on WSR 12/30/19 LRS Test Unit 1, Post Adperf Flowback, Continue WSR from 12/29/30, SB for DSO,End SB for 12/30/2019 DSO, POPWell, Flow to Tank, Continued on WSR 12/31/19 T/I/0 = 870/1170/110. Temp = Si. TBG & IA FL (Testers Request). AL spool removed, PBGL online rigged up from 04-22. TBG FL @ 3990' (61 bbls). IA FL @ 6911' (Sta #1, SO, 370 bbls). 12/30/2019 Well Testers in control of well upon departure. 14:15 LRS Test Unit 1, Post Adperf Flowback, Continue WSR from 12/30/30, Flow to Tank, Divert to 12/31/2019 Production, Continued on WSR 01/01/20 LRS Test Unit 1, Post Adperf Flowback, Continue WSR from 12/31/30, Continue to Flow / Stabilize 1/1/2020 Well, Continued on WSR 01/02/20 1/2/2020 LRS Test Unit 1, Post Adperf Flowback, Continue WSR from 01/01/20, Continue to Flow / Stabilize 1/2/2020 Well, 12 Hour Piggy Back Test, Continued on WSR 01/03/20 LRS Test Unit 1, Post Adperf Flowback, Continue WSR from 01/02/20, RDMO, End WSR 01/03/20 1/3/2020 , JOB COMPLETE TREE= WELLHEAD= FMC ACTL ATOR= INTERVAL K8. ELEV = 60' BF. D_EV = 24.32' KOP= 1900' Max Angle = 96" @ 14428' Datum MD= WA DatumTVD= 88001SS 68#, K-55, D= 12.415' 13-3/8" CSG, 72#, L-80, D = 12.347" 2393' Minimum ID = 2.377'@ 12845' 3-3/16" X 2-718" XO 14-1/2- TBG, 12.6#, 13CR-80..0152 bpf, D= 3.958" 1 pf, D = 4.892" r- 12193' 4-1rz"TBG-Pc 12193' TOP OF 7" LNR 12244' TBG -PC, 12.6#, L-80, .0152 bpf, ID = 3.958" 12289' SPF INTERVAL 9-5/8" CSG, 47#, L-80 BTC, ID= B.681" 12673' LNR 9.2#, L-80 STL, .0087 bpf, D = 2.992"12684' 13120 -13220 4-1/2" X 7" BKR DB -TA WHPSTOCK w/RA TAG (2 12974'(09/16/17) 12695' 6 ' LNR 29#, L-80 BTC, .0371 bpf, D = 6.184'•-12895' O 12/15/19 LNR 6.6#, 13CR-85 TCB .0079 bpf, D = 2.850" PERFORATION SUMMARY REF LOG: BAKER RPM ON 11/03M7 ANGLE ATTOP PERF: 85" @ 13120' Note: Refer to Production DB for Nalorical perfdata SIZE SPF INTERVAL gprdSqz DATE 2' 6 13120 -13220 O 11/05/17 1.56" 6 13220-14057 O 12/15/19 2" 6 14067-14185 O 11/05/17 2' 6 14330-14400 O 11/05/17 2' 6 14425-14502 O 11/05/17 1.56" 6 14502 -14688 O 12/15/19 2" 6 14700-14980 O 11/05/17 2- 6 15020 -15055 O 11/05/17 2- 6 15094 -15164 O 11/05117 13CR-85 HYD511, .0058 bpf, D= 04-21A SACCHROMETBG & NR "'MAXDLS-.NOTES: WELL AGLE> 70* :2980� 13171"•• ?- HLS X NP, D = 3.813" GAS LFT MANDRELS ST AAD ND DEV TYPE VLV LATCH PORT DATE 5 3157 3008 44 MMG OW RK 0 02/10/17 4 4236 3637 57 MMG DONE RK 16 11/16/17 3 6911 5194 56 MMG SO RK 20 11/16/17 2 7737 5617 62 MNIG DAM RK 0 09/10/03 1 8847 6207 59 WAS DMY RK 0 09/10/03 X 4-1/2" 12164' _I-14-1/2"H6XNP, D=3.813' 12169' 3.70" DEPLOY SLV, D= 3.00" ORIGINAL COMPLETION 12178' UNIOUE MACHINE OVBiSHOT 12181' 12164'5-1/2" 3-12" HES X NP, D = 2.873" BOT PBRASSY LNR I 12193' j—{ 5-1/2" X 4-1/2" XO, D = 3.958" 12277'—J4-1/2" OTS XN NIP, D = 3.725" BEHIND CT LNR 12298' 4-12"BOTSHEAROUTSUB 12289' 4-V2" TUBING TAIL 12346' ELMDTTLOGGED06/11/86 12684' 3-12" X 3-3/16" XO, D = 2.786" MLLOUT WINDOW (04-21A) 12697'-12704- 1 2697'-12704' 1 12846' 1 PRUDHOE BAY UNR WELL: 04-21A PERMR No: 217-117 API No: 50-029-21435-01 T11 N, RISE, 1147' FSL & 20° BP Exploration (Alaska) BY COMMENTS DATE REV BY COMMENTS ORIGINAL COMPLETION 12/04/17 JNUJMD ADDED BF E JDMMK RWO 12/18/19 MR/JMD ADPERFS(12 nDATEREV N-CDR2 CTD(04-21A) JMD DRLG DRAFT CORRECTIONS RC/JMD FNAL ODE APPROVAL JPK/JMD GLV C/O (11/16/17) PRUDHOE BAY UNR WELL: 04-21A PERMR No: 217-117 API No: 50-029-21435-01 T11 N, RISE, 1147' FSL & 20° BP Exploration (Alaska) THE STATE ALASKA GOVERNOR MIKE DUNLEAVY Todd Sidoti Well Intervention Engineer BP Exploration (Alaska), Inc. PO Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Oil Pool, PBU 04-21A Permit to Drill Number: 217-117 Sundry Number: 319-540 Dear Mr. Sidoti: Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, Alaska 99501-3572 Main: 907.279.1433 Fax: 907.276.7542 www.aogcc.claska.gov Enclosed is the approved application for the sundry approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC an application for reconsideration. A request for reconsideration is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. Sincerely, . Price Chair DATED this �5 day of December, 2019. RBDMS (f''&j DEC 0 5 2019 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 ..r v .11 v YY \✓ NOV 2 7 2 'g J Do'S 1. Type of Request: Abandon ❑ Plug Perforations ❑ Fracture Stimulate ❑� ra 1i{y Repair Well ❑ s -u Cwn EI Suspend ❑ Perforate 0 Other Stimulate ❑ Pull Tubing ❑ Change Approved Program ❑ Plug for Retlrill ❑ Perforate New Pool ❑ Re-enter Susp Well ❑ Alter Casing ❑ Other Well Work Platform 0 2. Operator Name: BP Exploration (Alaska), Inc 4. Current Well Class: Exploratory ❑ Development 0 5. Permit to Drill Number: 217-117 3. Address: P.O. Box 196612 Anchorage, AK 99519-6612 Stratigraphic ❑ Service ❑ 6_ API Number: 50-029-21435-01-00 7. If perforating: GO 341G What Regulation or Conservation Order governs well spacing in this Pool? 8, Well Name and Number: Will planned perforations require a spacing exception? Yes ❑ No 0 PBU 04-21A r 9. Property Designation (Lease Number): 10. Field/Pools: ADL 028324, 028325 & 028322 PRUDHOE BAY. PRUDHOE OIL 11. PRESENT WELL CONDITION SUMMARY Total Depth MD (ft): Total Depth TVD(ft): Effective Depth MD' Effective Depth ND: MPSP (psi): Plugs (MD): Junk (MD): 15202 8653 15166 8654 2517 None None Casing Length Size MD TVD Bunt Collapse Structural Conductor 80 20" 39-119 39-119 1490 470 Surface 2351 13-3/8" 38-2389 38-2356 3450/5380 1950 / 2670 Intermediate 12533 9-5/8" 36-12569 36-8393 6870 4760 Liner 453 7" 12244 - 12697 8179-8480 8160 7020 Liner 3043 3-1/2" x 3-1/4" x 2-7/8" 12159 - 15202 8125-8653 Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): 13120 - 15164 8650 - 8691 4-1 /2" 12.6# x 5-1/2" 17# 13Cr80 / L-80 34-12280 Packets and SSSV Type: 4-1/2" Baker 5-3 Perm Packer Packers and SSSV MD (ft) and TVD (ft): 12144/8116 5-1/2" BOT 3-H Packer 12173/8134 12. Attachments: Proposal Summary 21 Wellbore Schematic 0 13. Well Class after proposed work: Detailed Operations Program ❑ BOP Sketch 0 Exploratory ❑ Stratigraphic ❑ Development 0 Service ❑ 14. Estimated Date for Commencing Operations: Deccember 5, 2019 • 15. Well Status after proposed work: Oil 0 WINJ ❑ WDSPL ❑ Suspended ❑ 16. Verbal Approval: Date: GAS ❑ WAG ❑ GSTOR ❑ SPLUG ❑ Commission Representative: GINJ ❑ Op Shutdown ❑ Abandoned ❑ 17. 1 hereby certify that the foregoing is true and the procedure approved herein will not Contact Name: Sidoti, Todd be deviated from without prior written approval. Contact Email: Todd.Sidoti@bp.com Authorized Name: Sidoti, Todd Contact Phone: +1 907 564 5113 Authorized Title: Well Intervention Engineer Authorized Signature: Date: V it COMMISSION USE ONLY Conditions of approval: Notify Commission so that a representative may witness Sundry Number:�j _ Plug Integrity ❑ BOP Test ❑ Mechanical Integrity Test ❑ Location Clearance ❑ `� Other: IBDMS � DEC 0 51019 Post Initial Injection MIT Req'd? Yes ❑ No ❑11'-�''O Spacing E pbon Required? Yes ❑ No 51 Subsequent Form Required: i+ l ADBYTHE Approved by: ♦ COMMISSIONER COMMISSION I/ Date. WN ORIGIN 1 "1 L M,Q��,pr Submit Form and Form 10-403 Revised 04/2017 Approved application is valid for 12 months from the date of approval. /„/ �� L7�� AttacOmenta in pp lica`e 04-21A WWP Extended Add PerF Wellwork Procedure Reauest Scope of Work 04-21A is a CTD ST drilled in November 2017. While it is a competitive FURy well targeting Z1 B condensate and producing a black oil and condensate mixture (42 API), rates can be improved by filling the wellbore. The -1000' of adperfs proposed here will enhance access to the Z1 B black oil + condensate play, enabling us to increase - ideally double - gas production at the currently -competitive condensate yield and GOR. The biggest risk associated with this job is the highly -variable quality of Z1 B sands and fluids, particularly as it relates to not bringing enough additional gas into the wellbore. All available footage is being perrd, but this could ultimately be insufficient. -220 IOR is risked by 50% to reflect the possibility that the perrd rock has less deliverability than the currently-perfd rock along with the inherent on-time risk associated with FS -2 wells. Applying the well's typical 90% ontime, brings the job to 200 IOR. Job Sequence WBL Steps E. Townsend/C. Olsen: Coil, Pumping and Well Testing Supt. Date: 11/26/2019 To: L. Seymour/ T. Norene: Special Projects Supt, 2 FB R. Mielke/J. Culpepper: Wireline Supt. AFE: 3 From: Todd Sidoti IOR: 200 WWP Perforate per program Subject: 04-21A WWP Add Perf Revision: Scope of Work 04-21A is a CTD ST drilled in November 2017. While it is a competitive FURy well targeting Z1 B condensate and producing a black oil and condensate mixture (42 API), rates can be improved by filling the wellbore. The -1000' of adperfs proposed here will enhance access to the Z1 B black oil + condensate play, enabling us to increase - ideally double - gas production at the currently -competitive condensate yield and GOR. The biggest risk associated with this job is the highly -variable quality of Z1 B sands and fluids, particularly as it relates to not bringing enough additional gas into the wellbore. All available footage is being perrd, but this could ultimately be insufficient. -220 IOR is risked by 50% to reflect the possibility that the perrd rock has less deliverability than the currently-perfd rock along with the inherent on-time risk associated with FS -2 wells. Applying the well's typical 90% ontime, brings the job to 200 IOR. Job Sequence WBL Steps Completed (mm/dd/yy) 1 SL Full -gauge subsidence drift, D&T to deviation, contingent B&F 2 FB Assist SL w/ load & B&F 3 CT Drift & Tag to PBTD 5 WWP Perforate per program 12 T POP Well w/ Test Separator 1. Reservoir pressure - BHP is expected to be -3400 psi (7.4 ppg) @ 8800' TVD. Maximum calculated surface pressure with gas (0.10 psi/ft) to surface is 2517 psi. A full column of 1% KCI (8.34 ppg) will provide a -419 psi static overbalance. 2. Fracture pressure - For the PBU main area the FG is estimated to be 0.65 psi/ft. This equates to 5,655 psi at 8,700' TVD, or 12.5ppg EMW. Job Objective: Specific Well Objective 1 Perforate 1,023' of sand to increase well productivity 2 Flowback to portable test separator, two 12 piggyback hour facts Requested Perforation Intervals: Gun I Length Interval 1-9/16" Perfecta 1 837' 1 13,220'-14,057' 186' 1 14,502'-14,688' Proaram Contacts: Contact Work Phone Mobile Phone Interventions En ineer Todd Sidoti 564-5113 907-632-4113 Pad Engineer I Meredyth Richards 564-4867907-343-9701 Schlumber er I Stephen Higgins 907-659-6121 Well: 04-21A Revision: 0 Current Wellbore Configuration L1iEAD- 4"s: NO OEV 0 aEv + 60 ELEV+ 240 ii3-Y6'f56. O KSS. _. Angle • 96' ®_14426' �• O ,2.415 m M2= N.A Minimum 10 = 2.377' @ 12846' 3-3116" X 2.7181,_X0 4 1 Z' MG, I? B4, SIIrT PC01— 10. wubpf,10=469x1- �- 12193' IITMOP-oF4-;n•?;Ic.iC: } --_ 12193' ;2244• <,—/l TBGPC is AN. L6p—%152 6p1, o • 3.6 l - 12289 12914' 1RsgpnTKw u,AwN1ry t>ff LOG. &AI(92 WMGN i IM9+17 ANGLE ATTOPRW. 65' * 13120 Wm. Refnr m Flod�etien IR fo trs..:-al...r.�.es . 2' 6 NO OEV 0 11p 17 2' 6 14330.14900 O 17 r 6 1 114007-14165 14425 - 145M O 1:17 2' 6 14100-149&1 O I'll 1110Y'17 Y 6 15020-15055 O 11)Wi7 Y 6 15094-1518/ 1 O 11A 17 2441- 01TE fiP/ BY COM.ftR6 04-21A = =M 0329'.8 IM 13171^ ' I 2t2T_ 4-iQ'FB XNp D•3%1S"� f.GS11FY YlAYro[1 e (STS M3 NO OEV TYPE VL1, LF]I ._._.....,_._._._ I.1pT JM3 i�G6iA D]WEf,'t1JKi IT 11/01117 REYJMD Pl14L 01 IX3''1Rd3VA1. - BP 6cpbratb0 (AWknj 15 315T 3066 94 1161v OMY 174 4238 3637 57 MbG 173 6911 5199 56 MNG SO 172 7737 5617 62 MM3 fJMY O1 6847 6207 59 MNG OMY 3 t21� ai/r fBzl8.o+3.eu I MLLpn vrnaN(a-xtA112ea7'. 121x' OATEH V 6Y . _ — -- cl> "11" -- ^- Rd1LFI0E t3AYtM Mt 0411A fSit1AT W: 217-117 An W: 5 =.2143801 26, T1 IR R15E 1147'FSL 6205'FNL i0127m 007(11141. COMPLETIM /2A 17 3Pxl.PW A(k]TL f3FFi FI 0911111] JOM00( RWO .__._�. --.. _. _. _ 11 IT RC1= CTO(0421A) ._._.....,_._._._ I.1pT JM3 i�G6iA D]WEf,'t1JKi IT 11/01117 REYJMD Pl14L 01 IX3''1Rd3VA1. - BP 6cpbratb0 (AWknj /1Q0P11 J{%1JIIU IGLY G0111116H 1j Well: 04-21A Revision: 0 3 i TREE= WELLHEAD= FAT ACRATOR= SPF KB. ELE/ = 6D BF. HEV = 24.32 KOP= 190D Mix Angle = 96' 14428 Datum MD WA Datum TVD= 88W SS PROPOSED PERFS 13-3/B" CSG, D -12.415' 133/8' CSG, 7211, L-80, D =12.347' Minimum ID = 2.377'@ 12845' 3-3N 6" X 2-78" XO 1 4-1/2' TBG, 12.69. 13CR-80..0152 bof. 1)=3958'1 5-1/2' TBG -PC, 179, L-80, .0232 bpf, D = 4.892' TOPOF4-12' TBG -PC TOP OF 7' LNR 12' TBG -PC, 12.69, L-80-0152 bpf, D = 3.958' 9-5/8' CSG, 47#, L-80 BTC, D = 8.681' -12' LNR, 92#, L-80 STL, .0087 bpf, D = 2.992' 4-1/2'X 7' BKR DELTA WHIPSTOCK w/RA TAG @ 12974'(09/16/17) 7- LNR, 29#, L-80 BTC, .0371 bpf, D = 6-184- 114' LNR, 6.6#, 13CR-85 TCS, .0079 bpf, D = 2.85 1 12193' 1 PERFORATION SUMMARY REF LOG: BAKER RPM ON 11/03/17 ANGLE ATTOP PERF: 85'@ 13120' Note: Referto Production DB tbrtistodcaM rfdata SIZE SPF INTERVAL OprgSqz DATE 2' 6 13120-13220 O 11/05/17 "A 6' 6 13220-14057 O _/ 1 2- 6 14067-14185 O 11/05/17 2- 6 14330-14400 O 11/05/17 2- 6 14425-14502 O 11/05/17 14)/16' 6 14502-14688 O 2 2- 6 14700-14980 O 11/05117 2' 6 15020-15055 O 11/05/17 2- 6 15094-15164 O 11/05/17 LNR, 04-21A ***C OMETBGB NR'OTES: WELL **MAXDLS�9.8* 13171'••• I 1516W I "HES X NP, ID=3.813' GAS LIFT MANDRR S ST ASU TVD DEV TYPE VLV LATCH POR!I DATE 5 3157 3008 44 MMG DMY RK 0 02/10/17 4 4236 3637 57 MMG DO Pot 16 11/16/17 3 6911 5194 56 MW SO R( 20 11116/17 2 7737 5617 62 MNG DMY RK 0 09/10/03 1 8847 6207 59 MMG DMY RK 0 D9/10/03 4 -112 -HES X NP, D=3.813' 1 9-5/8' X 4-12' BKR S-3 PKR, D = 3- 4-112- HES X NP, D = 3.813- 13.70- DEPLOY SLV, D = 3.00' 727Z�� 3-12' H6 X NP, D = 2.813' 12764' 5-12' BOT PBR ASSY 12182' 9-5/8' X 5-1/2' BOT 3-H PKB 72193' 5-12'X4-12'XO, D=3.95 122 4-1/2' OTS XN NP. D = 3.72 72346' ELMD 7i LOGG®06/11/86 12684' 3-12' X 3-3/16' XO, D = 2.786' MLLOUT WINDOW (04-21A) 12697' - 12704' DATE REV BY COMMENTS DATE REV BY COMMENTS 1027/85 ORIGLNAL COMPLETMON 12104/17 JNUJMD ADDED BF ELEV 09/11103 JDMIKK RWO 1126/19 TS/JMD BUILT PROPOSED PERFS 11/08/17 N-COR2 CTD 04-21 11/07/17 JMD DRLG DRAFT CORRECTIONS IIAW17 RC/JMD FINAL ODE APPROVAL 1120117 JPK/JMD GLV C/O (11/16/17) PRUDHOE BAY UNIT WELL: 04-21A PERMIT No: 217-117 API No: 50-029-21435-01 SEC 26, T11 N, R15E, 1147' FSL 8 205 BP ExploraWn (Alaska) CT LNR II 4.4 04-21A Tree / BOP diagram Hydraulically Actuated Valve Choke Line Platform Floor Riser to platform floor Annular BlindlShear Coil PipelSlip VBRs Coil PipelSlip 7 M 7 Spool " Ory Hale Tree Upper Valve Low er Valve THA Tubinq Head Kill Line Ground Level Well: 04-21A Revision: 0 9 ,.N+3, i = by rH®`` RECEIVED NOV 16 2017 AOGCC Noi,:h America - ALASKA - BP Prudh:e Bay PB Dlc A 04-21 04-211- 50029%143501 Desig :04-21A Fins J Survey Report 02 November, 2017 BATER a GE company 21 71 17 28793 by 04-21. 04-21 BP Final Survey Report BAER F�yq! ES Q (usft) Site Position: Northing: 5,953,265.350 usft Company: North Amenca-ALASKA-BP Local Corordmate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM RSK- Alaska PROD -ANCP1 Project Prudhoe Bay, PBU, PRUDHOE Map System: Alaska NAD27 State Plane Zones System Datum: Mean Sea Level Geo Datum: NAD27' OGP-Jsa AK [4267'15864) Using Well Reference Point Map Zone: NAD27' OGP-Usa AK / Alaska zone 4 [26734"1586, Using geodetic scale factor Site PB DS D4, TR -11-15 04-21. 04-21 Depth From (TVD) +N/.S (usft) Site Position: Northing: 5,953,265.350 usft Latitude: 70' 16'31.598 N From: Map Easting: 711,234.970 usft Longitude: 148" 17'27.907 W Position Uncertainty: 0.00 usft Slot Radius: 0.000 in Grid Convergence: - 1.61 ` Well 04-21. 04-21 Depth From (TVD) +N/.S (usft) (usft) Well Position +N/-3 0.00 usft Northing: 5,953,024.760 usft Latitude: 70° 16'28.743 N +E/ -W 0.00 usft Easgng: 713,001.220 usft Longitude: 148° 16'36.693 W Position Uncertainty 0.00 usft Wellhead Elevation: 24.32 usft Ground Level: 19.70 usft lbore 04-21A io-a+a.s nuaas �-.. Inetres Model Name Sample Date Declination Dip Angle Field Strength (°) (°) (nT) BGGM2017 11/1/2017 17.76 81.00 57,491 Design Audit Notes: Version: Vertical Section: 04.21A Phase: ACTUAL Depth From (TVD) +N/.S (usft) (usft) 35.68 0.00 Tie On Depth: +FJ -W (usft) 0.00 12,675.00 Direction (°) 345.95 1122017 8:33: 16AM 1age 2 COMPASS 5000.1 Build 81D w bp Final SurBP Survey Report BAKER E.m,, y Company: North America-ALPSKA-BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Say TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K -Alaska PROD - ANCP1 Survey Program Date '1/1/2017 (usft) BID From To (usft) (usft) (usft) Survey (Wellbore) Tool Name Description _ 100.00 12,675.00 Gyro MS (04-21) GYD-CT-CMS Gyrodata cont.casing m/s - 12,691.00 15,170.70 EHGE CTK MWD 4-1/7'(04-21A) MWD MWD -Standard 0,10 Survey MD 12.99 327.49 1,896.66 1,836.66 Inc Azl (azimuth) TVD 51.861 TVDSS NIS EIW Northing Easting DLeg V. Sec (usft) (•) (°) (usft) BID (usft) (usft) (usft) (usft) (usft) (•/100usft) (usft) 35.68 0,10 0.00 35.68 -24.32 0.00 0.00 5,953,024.760 713,001.220 0.00 0.00 100.00 0.11 253.67 100.00 40.00 -0.02 -0.06 5,953,024.741 713,001.161 0.17 0.00 200.00 0.10 267.13 200.00 140.00 -0.05 -0.24 5,953,024.705 713,000.983 0.03 0.01 300.00 0.15 268.75 300.00 240.00 -0.06 -0.46 5,953,024.691 713,000.765 0.05 0.06 400.00 0.15 258.58 400.00 340.00 -0.08 -0.72 5,953,024.655 713,000.507 0.03 0.09 500.00 0.23 263.00 500.00 440.00 -0.14 -1.04 5,953,024.595 713,000.181 0.08 0.12 600.00 0.33 288.11 600.00 540.00 -0.07 -1.52 5,953,024.647 712,999.706 0.16 0.30 700.00 - 046 28263 700.00 64000 0.14 -2.17 5,953,024.839 712,999.045 0.13 0.66 800.00 0.45 282.14 799.99 739.99 0.35 -2.94 5.953,025.022 712,998.273 0.04 1.05 900.00 0.34 265.53 899.99 839.99 0.40 -3.62 5,953,025.062 712,997.592 0.16 1,000.00 0.39 269.65 999.99 939.99 0.38 -4.25 5,953,025.019 712,996.956 0.06 1.40 1,100.00 0.20 251.37 1,099.99 1,039.99 0.32 -4.76 5,953,024.947 712,996.453 0.21 1.47 1,200.00 0.17 121.26 1,199.99 1,139.99 0.19 -4.80 5,953,024.813 712,996.418 0.34 1.35 1,300.00 0.25 118.34 1,299.99 1,239.99 0.00 -4.47 5,953,024.638 712,996.749 0.09 1.09 1,400.00 1.88 349.82 1,399.97 1,339.97 1.51 -4.56 5,953,026.141 712,996.616 2.05 2.57 1,500.00 4.04 349.63 1,499.83 1,439.83 6.59 -5.49 5,953,031.193 712,995.549 2.16 7.73 1,600.00 3.50 341.72 1,599.61 1,539.61 12.95 -7.08 5,953,037.509 712,993.778 0.75 14.29 1,700.00 5.?8 324.73 1,699.27 1,639.27 20.11 -11.04 5,953,044.546 712,989.611 2.82 22.19 1,800.00 8.63 327.51 1,798.45 1,738.45 30.69 -18.08 5,953,054.925 712,982.276 2.67 34.16 1,875.00 11.83 326.91 1,872.25 1,812.25 41.88 -25.31 5,953,065.906 712,974.740 4.27 46.77 1,900.00 12.99 327.49 1,896.66 1,836.66 46.40 -28.21 5,953,070.338 712,971.705 4.67 51.861 1122017 8:33: 16AM Page 3 COMPASS 5000.1 Build BID BP BA ER by Final Survey Report F�VGH Company: North America -ALASKA -BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00us(t (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K-Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS N/S EIW Northing Easting DLeg V. Sec (usft) (') (°) (usft) (usft) (usft) (usft) (usft) (usft) ('/100usft) (usft) 1,925.00 14.14 327.58 1,920.96 1,860.96 51.34 -31.36 5,953,075.194 712,968.419 4.60 57.42 1,950.00 14.98 327.53 1,945.16 1,885.16 56.65 -34.73 5,953,080.400 712,964.898 3.36 6' -1 1,975.00 16.06 328.70 1,969.25 1,909.25 62.33 -38.27 5,953,085.978 712,961.208 4.50 6 2,000.00 17.18 330.14 1,993.20 1,933.20 68.49 41.90 5,953,092.030 712,957.400 4.77 76.61 2,025.00 18.35 330.50 2,017.01 1,957.01 75.11 45.68 5,953,098.547 712,953.438 4.70 83.96 2,050.00 1849 330.27 2,040.73 1,980.73 81.98 49.58 5,953,105.301 712,949.342 0.63 91.57 2,075.00 18.57 330.04 2,064.43 2,004.43 88.87 -53.53 5,953,112.077 712,945.195 0.43 99.21 2,100.00 1843 330.69 2,088.14 2,028.14 95.77 -57.46 5,953,118.858 712,941.079 1.00 106.85 2,125.00 18.53 330.73 2,111.85 2,051.85 102.68 -61.33 5,953,125.657 712,937.008 0.40 114.50 2,150.00 18.78 330.87 2,135.54 2,075.54 109.66 -65.23 5,953,132.523 712,932.911 1.02 122.22 2,175.00 19.33 332.64 2,159.17 2,099.17 116.85 -69.09 5,953,139.601 712,928.849 3.19 130.13 2,200.00 20.10 334.52 2,182.70 2,122.70 124.40 -72.84 5,953,147.044 712,924.887 3.99 138.37 2,225.00 20.72 335.92 2,206.14 2,146.14 132.32 -76.50 5,953,154.853 712,921.012 3.16 146.93 2,250.00 21.67 338.06 2,229.44 2,169.44 140.64 -80.03 5,953,163.069 712,917.249 4.90 155.86 2,275.00 22.75 339.99 2,252.59 2,192.59 149.46 -83.41 5,953,171.793 712,913.622 5.21 165.24 2,300.00 24.02 341.54 2,275.54 2,215.54 158.83 -86.67 5,953,181.066 712,910.093 5.64 175.12 2,325.00 24.25 341.68 2,298.35 2,238.35 168.53 -89.90 5,953,190.670 712,906.595 0.95 11 2,350.00 24'_+4 341.32 2,321.14 2,261.14 178.28 -93.16 5,953,200.328 712,903.056 0.69 195.57 2,375.00 23.76 339.51 2,343.97 2,283.97 187.88 -96.57 5,953,209.825 712,899.373 3.75 205.71 2,393.00 23.41 339.77 2,360.46 2,300.46 194.64 -99.08 5,953,216.504 712,896.677 2.00 212.87 13 3/8" 2,400.00 23.28 339.87 2,366.89 2,306.89 197.24 -100.04 5,953,219.079 712,895.646 2.00 215.62 2,425.00 23.10 340.95 2,389.87 2,329.87 206.51 -103.34 5,953,228.256 712,892.084 1.85 225.42 2,450.00 23.34. 340.88 2,412.84 2,352.84 215.83 -106.56 5,953,237.475 712,888.599 0.97 235.24 2,475.00 23.55 341.05 2,435.78 2,375.78 225.23 -109.80 5,953,246.782 712,885.091 0.88 245.15 2,500.00 24.07 341.94 2,458.65 2,398.65 234.80 -113.01 5,953,256.258 712,881.619 2.53 255.21 2,525.00 24.79 342.45 2,481.41 2,421.41 244.65 -116.17 5,953,266.008 712,878.181 3.00 265.53 11/22017 8:33: 16AM Page 4 COMPASS 50001 Build 81D b BP BAT(ER P Final Survey Report UGHES E,. p,wr Company: North America -ALASKA -BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay ND Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K-Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS WS EM Northing Easting DLeg V. Sec (usft) V) (°) (usft) (usft) (usft) (usft) (usft) (usft) ('/100usft) (usft) 2,550.00 25.79 341.59 2,504.02 2,444.02 254.80 -119.46 5,953,276.068 712,874.597 4.26 27 2,575.00 26.41 340.99 2,526.47 2,466.47 265.22 -122.99 5,953,286.380 712,870.775 2.70 287.15 2,600.00 27.05 339.48 2,548.80 2,488.80 275.80 -126.80 5,953,296.850 712,866.672 3.76 298.33 2,625.00 28.02 337.72 2,570.96 2,510.96 286.56 -131.02 5,953,307.486 712,862.150 5.03 309.80 2,650.00 28.62 337.37 2,592.97 2,532.97 297.52 -135.55 5,953,318.313 712,857.311 2.49 321.53 2,675.00 29.11 337.36 2,614.86 2,554.86 308.66 -140.19 5,953,329,316 712,852.353 1.96 333.46 2,700.00 29.65 337.55 2,636.63 2,576.63 320.03 -144.91 5,953,340.540 712,847.317 2.98 345.63 2,725.00 30.95 338.40 2,658.19 2,598.19 331.75 -149.65 5,953,352.128 712,842.245 4.72 358.16 2,750.00 31.35 338.43 2,679.59 2,619.59 343.78 -154.41 5,953,364.013 712,837.149 1.60 370.98 2,775.00 31.93 338.69 2,700.86 2,640.86 355.99 -159.21 5,953,376.088 712,832.008 2.58 383.99 2,800.00 32.97 338.81 2,721.99 2,661.99 368.45 -164.05 5,953,388.404 712,826.813 2.77 397.26 2,825.00 33.04 338.87 2,742.99 2,682.99 381.10 -168.95 5,953,400.906 712,821.561 1.49 410.72 2,850.00 33.77 339.06 2,763.86 2,703.86 393.95 -173.89 5,953,413.609 712,816.260 2.95 424.38 2,875.00 34.88 339.37 2,784.51 2,724.51 407.13 -178.89 5,953,426.641 712,810.887 4.49 438.38 2,900.00 35.36 339.92 2,804.89 2,744.89 420.70 -183.92 5,953,440.060 712,805.473 4.12 45-" 2,925.00 36.88 340.62 2,825.02 2,765.02 434.65 -188.93 5,953,453.867 712,800.076 4.40 46.. . 2,950.00 37.G4 341.18 2,844.89 2,784.89 448.99 -193.89 5,953,468.056 712,794.710 4.07 482.62 2,975.00 38.58 341.65 2,864.54 2,804.54 463.64 -198.82 5,953,482.567 712,789.369 3.18 498.04 3,000.00 39.66 342.27 2,883.93 2,823.93 478.64 -203.70 5,953,497.420 712,784.063 4.59 513.77 3,025.00 40.53 342.67 2,903.06 2,843.06 493.99 -208.55 5,953,512.629 712,778.781 3.63 529.85 3,050,00 41.37 342.83 2,921.94 2,861.94 509.64 -213.41 5,953,528.133 712,773.482 3.39 546.20 3,075.00 42.29 342.73 2,940.57 2,880.57 525.57 -218.34 5,953,543.911 712,768.097 3.69 562.85 3,100.00 43.19 342.60 2,958.93 2,898.93 541.76 -223.40 5,953,559.957 712,762.586 3.62 579.79 3,125.00 44.17 342.52 2,977.01 2,917.01 558.24 -228.57 5,953,576.275 712,756.947 3.93 597.03 3,150.00 44.93 342.37 2,994.82 2,934.82 574.96 -233.86 5,953,592.839 712,751.186 3.07 614.53 3,175.00 45.55 342.36 3,012.42 2,952.42 591.88 -239.24 5,953,609.598 712,745.331 2.52 632.25 3,200.00 46.30 342.07 3,029.81 2,969.81 608.98 -244.73 5,953,626.538 712,739.363 3.08 650.17 111212017 633:16AM Page COMPASS 5000.1 Build 81D BP BAER by Final Survey Report F�UGME Company: North America -ALASKA -BP Local Coordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM RSK- Alaska PROD -ANCP7 Survey MD Inc Azi (azimuth) TVD TVDSS NIS EIW Northing East ng DLeg V. Sec (usft) (°) (') (usft) (usft) (usft) (usft) (usft) (usft) (°I100ustt) (usR) 3,225.00 46.77 342.04 3,047.01 2,987.01 626.24 -250.32 5,953,643.635 712,733.286 1.88 668.28 3,250.00 47.00 341.93 3,064.10 3,004.10 643.60 -255.96 5,953,660.822 712,727,153 0.97 6F 3,275.00 47.33 341.97 3,081.09 3,021.09 661.03 -261.64 5,953,678.084 712,720.982 1.33 704.,7 3,300.00 47.16 341.90 3,097.95 3,037.95 678.58 -267.37 5,953,695.464 712,714.764 2.13 723.19 3,325.00 48.:7 341.65 3,114.61 3,054.61 696.28 -273.20 5,953,712.997 712,708.435 2.94 741.78 3,350.00 49.44 341.62 3,131.01 3,071.01 714.20 -279.15 5,953,730.734 712,701.984 3.64 760.60 3,375.00 51.02 341.47 3,146.99 3,086.99 732.43 -285.23 5,953,748.785 712,695.386 6.18 779.76 3,400.00 52.98 341.71 3,162.38 3,102.38 751.12 -291.45 5,953,767.292 712,688.639 7.88 799.40 3,425.00 55.:2 341.73 3,177.04 3,117.04 770.35 -297.80 5,953,786.331 712,681.746 8.96 819.60 3,450.00 57.31 342.16 3,190.92 3,130.92 790.11 -304.24 5,953,805.906 712,674.747 8.48 840.34 3,475.00 58.12 342.19 3,204.28 3,144.28 810.23 -310.71 5,953,825.834 712,667.711 3.24 861.43 3,500.00 58.-3 342.19 3,217.37 3,157.37 830.51 -317,23 5,953,845.919 712,660.625 2.44 882.68 3,525.00 59.05 342.14 3,23028 3,170.28 850.89 -323.78 5,953,866.100 712,653.496 1.29 904.04 3,550.00 59.11 341.98 3,243.13 3,183.13 871.29 -330.39 5,953,886.308 712,646.315 0.60 925.43 3,575.00 58.50 341.28 3,256.08 3,196.08 891.59 -337.13 5,953,906.403 712,639.004 3.42 946.76 3,600.00 57.87 340.47 3,269.26 3,209.26 911.66 -344.09 5,953,926.268 712,631.480 3.73 967.92 3,625.00 57.33 339.90 3,282.65 3,222.65 931.52 -351.24 5,953,945.915 712,623.766 2.89 9t 3,650.00 56.84 339.65 3,296.24 3,236.24 951.21 -358.50 5,953,965.394 712,615.956 2.13 1,009.79 3,675.00 56.70 339.58 3,309.94 3,249.94 970.81 -365.78 5,953,984.781 712,608.121 0.61 1,030.57 3,700.00 56.39 339.47 3,323.72 3,263.72 990.35 -373.08 5,954,004.106 712,600.275 1.29 1,051.30 3,725.00 55.92 339.16 3,337.64 3,277.64 1,009.78 -380.41 5,954,023.315 712,592.394 2.14 1,071.92 3,750.00 55.3,1 338.81 3,351.76 3,291.76 1,029.04 -387.81 5,954,042.356 712,584.454 2.70 1,092.40 3,775.00 54,63 338.72 3,366.10 3,306.10 1,048.12 -395.23 5,954,061.226 712,576.500 2.50 1,112.72 3,800.00 54.84 338.65 3,380.53 3,320.53 1,067.15 -402.65 5,954,080.030 712,568.542 0.64 1,132.97 3,825.00 54.81 338.90 3,394.93 3,334.93 1,086.20 -410.05 5,954,098.861 712,560.608 0.83 1,153.25 3,850.00 54.99 339.11 3,409.30 3,349.30 1,105.29 -417.38 5,954,117.741 712,552.742 1.00 1,173.55 3,875.00 55.11 339.36 3,423.62 3,363.62 1,124.45 -424.64 5,954,136.687 712,544.939 0.95 1,193.90 1122017 8:33: 16AM Page 6 COMPASS 50001 Build 81D r - BP BA ER by Final Survey Report F�UGHES ma. Company: North America -ALASKA - BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K-Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS WS EM Northing Easting DLeg V. Sec (usft) (') 0 (usft) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) 3,900.00 5554 339.43 3,437.83 3,377.83 1,143.71 -431.88 5,954,155.729 712,537.157 2.13 1,21 3,925.00 56.C2- 339.59 3,451.87 3,391.87 1,163.08 -439.12 5,954,174.892 712,529.371 1.61 1,234.89 3,950.00 56.<5 339.74 3,465.77 3,405.77 1,182.57 -446.35 5,954,194.166 712,521.601 1.79 1,255.55 3,975.00 56.89 339.91 3,479.50 3,419.50 1,202.18 453.55 5,954,213.560 712,513.845 1.85 1,276.32 4,000.00 56.90 340.12 3,493.16 3,433.16 1,221.86 460.71 5,954,233.029 712,506.134 0.70 1,297.15 4,025.00 57.C1 340.19 3,506.79 3,446.79 1,241.57 467.82 5,954,252.530 712,498.465 0.50 1,318.00 4,050.00 56.13 340.16 3,520.51 3,460.51 1,261.23 -474.91 5,954,271.979 712,490.825 2.44 1,338.79 4,075.00 55.98 340.06 3,534.42 3,474.42 1,280.76 -481.97 5,954,291.303 712,483.208 1.71 1,359.45 4,100.00 55.85 340.21 3,548.43 3,488.43 1,300.23 489.01 5,954,310.568 712,475.624 0.72 1,380.05 4,125.00 56.10 340.26 3,562.42 3,502.42 1,319.73 -496.02 5,954,329.860 712,468.069 1.01 1,400.67 4,150.00 56.38 340.43 3,576.32 3,516.32 1,339.31 -503.01 5,954,349.227 712,460.527 1.25 1,421.35 4,175.00 56.52 341.20 3,590.13 3,530.13 1,358.98 -509.85 5,954,368.702 712,453.127 2.63 1,442.11 4,200.00 5672 341.84 3,603.89 3,543.89 1,378.78 -516.47 5,954,388.305 712,445.952 2.28 1,462.92 4,225.00 57.^7 342.17 3,617.54 3,557.54 1,398.70 -522.94 5,954,408,030 712,438.922 1.78 1,483.81 4,250.00 57.35 342.50 3,631.08 3,571.08 1,418,73 -529.32 5,954,427.868 712,431.980 1.61 150 _ 4,275.00 57.110 343.07 3,644.57 3,584.57 1,438.83 -535.55 5,954,447.784 712,425.185 1.93 1,52_ . 4,300.00 57.02 343.72 3,658.13 3,598.13 1,458.96 -541.55 5,954,467.734 712,418.616 2.45 1,546.78 4,325.00 56.10 344.08 3,671.91 3,611.91 1,479.00 -547.34 5,954,487.604 712,412.266 3.87 1,567.63 4,350.00 55.64 343.99 3,685.93 3,625.93 1,498.90 -553.03 5,954,507.330 712,406.013 1.86 1,588.31 4,375.00 55.',0 343.74 3,700.14 3,640.14 1,518.66 -558.74 5,954,526.920 712,399.740 2.31 1,608.87 4,400.00 55.11 343.67 3,714.44 3,654.44 1,538.34 -564.50 5,954,546.429 712,393.432 0.23 1,629.36 4,425.00 55.12 343.59 3,728.74 3,668.74 1,558.02 -570.28 5,954,565.933 712,387.098 0.27 1,649.85 4,450.00 54.81 343.61 3,743.09 3,683.09 1,577.65 -576.06 5,954,585.398 712,380.765 1.24 1,670.30 4,475.00 54.33 343.43 3,757.59 3,697.59 1,597.19 -581.84 5,954,604.759 712,374.436 2.01 1,690.66 4,500.00 53.3! 343.07 3,772.26 3,712.26 1,616.57 -587.67 5,954,623.970 712,368.056 2.38 1,710.88 4,525.00 53.04 342.38 3,787.15 3,727.15 1,635.74 -593.63 5,954,642.964 712,361.555 3.79 1,730.92 4,550.00 52.41 341.60 3,802.29 3,742.29 1,654.66 -599.78 5,954,661.700 712,354.872 3.54 1,750.77 11/2/2017 8:33: 16AM Page 7 COMPASS 5000.1 Build 81D BP BA, �(ER by Final Survey Report UGHES Company: North America -ALASKA -BP Local Coordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K - Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS NIS ENV Northing Easting DLeg V. Sec (usft) V) P) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 4,575.00 52.24 341.36 3,817.57 3,757.57 1,673.42 -606.07 5,954,680.276 712,348.059 1.02 1,770.49 4,600.00 5246 341.21 3,832.84 3,772.84 1,692.17 -612.42 5,954,698.835 712,341.180 1.00 1,790'1 4,625.00 52.47 341.16 3,848.08 3,788.08 1,710.94 -618.81 5,954,717.411 712,334.258 0.16 1,809.08 4,650.00 52.25 340.77 3,863.34 3,803.34 1,729.65 -625.27 5,954,735.934 712,327.274 1.52 1,829.70 4,675.00 52.07 340.29 3,878.68 3,818.68 1,748.26 -631.85 5,954,754.353 712,320.170 1.68 1,849.36 4,700.00 51.91 339.78 3,894.07 3,834.07 1,766.78 -638.57 5,954,772.668 712,312.923 1.73 1,868.95 4,725.00 51.66 339.48 3,909.51 3,849.51 1,78522 -645.42 5,954,790.905 712,305.558 0.97 1,888.50 4,750.00 51.57 339.15 3,924.98 3,864.98 1,803.59 -652.36 5,954,809.072 712,298.105 1.29 1,908.00 4,775.00 51.60 339.02 3,940.49 3,880.49 1,821.90 -659.35 5,954,827.176 712,290.592 0.49 1,927.46 4,800.00 51.81 338.97 3,955.99 3,895.99 1,840.21 -666.39 5,954,845.285 712,283.044 0.85 1,946.94 4,825.00 51.84 338.87 3,971.47 3,911.47 1,858.53 -673.45 5,954,863.390 712,275.470 0.75 1,966.42 4,850.00 51.94 338.78 3,986.94 3,926.94 1,876.84 -680.54 5,954,881.498 712,267.859 1.23 1,985.91 4,875.00 52.46 338.81 4,002.26 3,942.26 1,895.26 -687.69 5,954,899.704 712,260.195 2.08 2,005.51 4,900.00 52.77 338.77 4,01744 3,957.44 1,913.78 -694.87 5,954,918.011 712,252.488 1.25 2,025.22 4,925.00 52.55 338.85 4,032.60 3,972.60 1,932.31 -702.06 5,954,936.332 712,244.782 0.92 2,044.94 4,950.00 52.40 338.94 4,047.83 3,987.83 1,950.81 -709.20 5,954,954.619 712,237.122 0.66 2,064.62 4,975.00 52.72 338.88 4,063.03 4,003.03 1,969.33 -716.34 5,954,972.928 712,229.459 1.29 2,01 5,000.00 52.74 338.88 4,078.17 4,018.17 1,987.89 -723.51 5,954,991.275 712,221.768 0.08 2,104.06 5,025.00 53.12 338.92 4,093.24 4,033.24 2,006.50 -730.69 5,955,009.674 712,214.063 1.53 2,123.86 5,050.00 53.36 338.80 4,108.20 4,048.20 2,025.18 -737.91 5,955,028.142 712,206.315 1.03 2,143.74 5,075.00 53.40 338.74 4,123.11 4,063.11 2,043.88 -745.18 5,955,046.631 712,198.523 0.25 2,163.64 5,100.00 53.77 338.66 4,137.95 4,077.95 2,062.63 -752.49 5,955,065.160 712,190.687 1.50 2,183.60 5,125.00 5398 338.57 4,152.69 4,092.69 2,081.43 -759.85 5,955,083.746. 712,182.795 0.89 2,203.63 5,150.00 54.25 338.44 4,167.34 4,107.34 2,100.28 -767.27 5,955,102.374 712,174.843 - 1.16 2,223.71 5,175.00 54.49 338.40 4,181.91 4,121.91 2,119.17 -774.74 5,955,121.049 712,166.838 0.97 2,243.86 5,200.00 54.62 338.25 4,196.41 4,136.41 2,138.10 -782.27 5,955,139.755 712,158.783 0.71 2,264.04 5,225.00 54.53 338.17 4,210.84 4,150.84 2,157.05 -789.84 5,955,158.483 712,150.674 0.88 2,284.27 1122017 8:33: 16AM Page 8 COMPASS 5000.1 Build 81D by Final SBP urvey Report BAJUGHES a Gr company Company: North America -ALASKA -BP Local Coaordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PS DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K-Alaska PROD -ANCPl Survey MD Inc Azi (azimuth) TVD TVDSS WS E/W Northing Easting DLeg V. Sec (usft) (') (°) (usft) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) 5,250.00 55.11 338.14 4,225.19 4,165.19 2,176.05 -797.46 5,955,177.260 712,142.522 1.12 2,3C 5,275.00 55.40 338.06 4,239.44 4,179.44 2,195.11 -805.12 5,955,196.095 712,134.324 1.19 2,324.90 5,300.00 55.58 338.00 4,253.61 4,193.61 2,214.22 -812.83 5,955,214.973 712,126.080 0.75 2,345.30 5,325.00 55.36 338.05 4,267.77 4,207.77 2,233.32 -820.54 5,955,233.848 712,117.834 0.82 2,365.71 5,350.00 55.10 338.10 4,282.03 4,222.03 2,252.37 -828.21 5,955,252.675. 712,109.630 1.13 2,386.05 5,375.00 54.23 338.12 4,296.35 4,236.35 2,271.38 -835.85 5,955,271.462 712,101.456 0.48 2,406.35 5,400.00 55.61 338.06 4,310.69 4,250.69 2,290.38 -843.49 5,955,290.236 712,093.281 0.23 2,426.63 5,425.00 55.25 338.09 4,324.99 4,264.99 2,309.41 -851.15 5,955,309.038 712,085.087 0.97 2,446.95 5,450.00 SS.C9 338.04 4,339.26 4,279.26 2,328.44 -858.81 5,955,327.848 712,076.886 0.66 2,467.28 5,475.00 55.12 337.96 4,353.57 4,293.57 2,347.46 -866.49 5,955,346.634 712,068.669 0.29 2,487.59 5,500.00 53.93 337.66 4,368.07 4,308.07 2,366.31 -874.18 5,955,365.265 712,060.448 4.66 2,507.75 5,525.00 53.90 337.46 4,382.78 4,322.78 2,384.99 -881.90 5,955,383.718 712,052.208 0.72 2,527.74 5,550.00 53.78 337.32 4,397.53 4,337.53 2,403.63 -889.66 5,955,402.123 712,043.924 0.66 2,547.70 5,575.00 54.06 337.30 4,412:26 4,352.26 2,422,27 -897.45 5,955,420.535 712,035.606 1.12 2,567.68 5,600.00 54.29 337.17 4,428.89 4,366.89 2,440.96 -905.30 5,955,438.996 712,027.237 1.01 2,587,2 5,625.00 54.20 337.10 4,441.50 4,381.50 2,459.65 -913.18 5,955,457.458 712,018.828 0.43 2,60. 5,650.00 53.77 337.08 4,456.20 4,396.20 2,478.28 -921.05 5,955,475.853 712,010.433 1.72 2,627.74 5,675.00 54.03 337.18 4,470.93 4,410.93 2,496.89 -928.90 5,955,494.235 712,002.059 1.09 2,647.70 5,700.00 54.01 337.05 4,485.61 4,425.61 2,515.53 -936.77 5,955,512.642 711,993.668 0.43 2,667.69 5,725.00 54.32 336.98 4,500.25 4,440.25 2,534.19 -944.68 5,955,531.068 711,985.229 1.26 2,687.71 5,750.00 54.30 336.95 4,514.84 4,454.84 2,552.87 -952.63 5,955,549.520 711,976.758 0.13 2,707.77 5,775.00 54.Z2 336.96 4,529.40 4,469.40 2,571.57 -960.58 5,955,567.983 711,968.279 0.48 2,727.84 5,800.00 5445 336.93 4,543.94 4,483.94 2,590.28 -968.55 5,955,586.461 711,959.789 0.15 2,747.92 5,825.00 54.228 337.00 4,558.51 4,498.51 2,608.98 -976.50 5,955,604.926 711,951.313 0.72 2,767.99 5,850.00 54.26 337.04 4,573.11 4,513.11 2,627.66 -984.42 5,955,623.377 711,942.865 0.15 2,788.04 5,875.00 53.82 337.03 4,587.79 4,527.79 2,646.29 -992.31 5,955,641.777 711,934.445 1.76 2,808.03 5,900.00 54.14 337.10 4,602.49 4,542.49 2,664.92 -1,000.19 5,955,660.168 711,926.042 1.30 2,828.01 11/2/2017 8:33: 16AM Page 9 COMPASS 5000.1 Build 810 BP BA ER bp Final Survey Report F�U R Company: North America -AL4SKA- BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K -Alaska PROD - ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS N/S E/W Northing Easting DLeg V. Sec (usft) (`) (') (usft) (usft) (usft) (usft) (usft) (usft) (Wousft) (usft) 5,925.00 54.20 337.05 4,617.12 4,557.12 2,683.58 -1,008.09 5,955,678.604 711,917.622 0.29 2,848.03 5,950.00 54.11 337.06 4,631.76 4,571.76 2,702.25 -1,015.99 5,955,697.033 711,909.197 0.36 2,86° "< 5,975.00 54.35 337.08 4,646.38 4,586.38 2,720.93 -1,023.89 5,955,715.484 711,900.768 1.00 2,87 6,000.00 54.50 337.01 4,660.92 4,600.92 2,739.65 -1,031.82 5,955,733.976 711,892.311 0.60 2,908.19 6,025.00 54.14 337.03 4,675.50 4,615.50 2,758.35 -1,039.75 5,955,752.439 711,883.857 1.44 2,928.25 6,050.00 53.61 337.05 4,690.20 4,630.20 2,776.97 -1,047.64 5,955,770.824 711,875.447 1.32 2,948.22 6,075.00 54.04 337.06 •4,704.92 4,644.92 2,795.57 -1,055.52 5,955,789.200 711,867.046 0.92 2,968.19 6,100.00 54.23 337.16 4,719.57 4,659.57 2,814.24 -1,063.40 5,955,807.633 711,858.641 0.83 2,988.21 6,125.00 54.58 337.33 4,734.16 4,674.16 2,832.96 -1,071.25 5,955,826.126 711,850.262 0.82 3,008.28 6,150.00 54.90 337.48 4,748.63 4,688.63 2,851.78 -1,079.08 5,955,844.719 711,841.899 2.14 3,028.44 6,175.00 55.05 337.60 4,762.97 4,702.97 2,870.70 -1,086.90 5,955,863.409 711,833.546 - 0.72 3,048.69 6,200.00 54.97 337.63 4,777.31 4,717.31 2,88964 -1,094.70 5,955,882.117 711,825.213 0.33 3,068.96 6,225.00 55.29 337.62 4,791.60 4,731.60 2.908.61 -1,102.51 5,955,900.855 711,816.872 1.28 3,089.25 6,250.00 55.02 337.63 4,805.89 4,745.89 2,927.58 -1,110.32 5,955,919.598 711,808.528 1.08 3,109.55 6,275.00 55.32 337.65 4,820.17 4,760.17 2,946.56 -1,118.13 5,955.938.347 711,800.187 1.20 3,129.86 6,300.00 55.21 337.65 4,834.41 4,774.41 2,965.56 -1,125.94 5,955,957.119 711,791.841 0.44 3,150.19 6,325.00 55.07 337.62 4,848.70 4,788.70 2,984.53 -1,133.75 5,955,975.860 711,783.502 0.57 3,1- .6,350.00 55.24 337.67 4,862.98 4,802.98 3,003.51 -1,141.55 5,955,994.606 711,775.164 0.70 3,190.79 6,375.00 55.21 337.64 4,877.24 4,817.24 3,022.50 -1,149.36 5,956,013.369 711,766.823 0.16 3,211.11 6,400.00 55.49 337.63 4,891.46 4,831.46 3,041.52 -1,157.18 5,956,032.158 711,758.463 1.12 3,231.46 6,425.00 55.41 337.76 4,905.63 4,845.63 3,060.57 -1,165.00 5,956,050.979 711,750.112 0.53 3,251.84 6,450.00 55.15 337.90 4,919.87 4,859.87 3,079.60 -1,172.75 5,956,069.781 711,741.822 1.10 3,272.18 6,475.00 55.08 337.94 4,934.17 4,874.17 3,098.61 -1,180.46 5,956,088.559 711,733.578 0.35 3,292.49 6,500.00 55.54 337.91 4,948.40 4,888.40 3,117.65 -1,188.19 5,956,107.381 711,725.317 1.84 3,312.84 6,525.00 55.50 338.38 4,962.55 4,902.55 3,136.78 -1,195.86 5,956,126.282 711,717.108 1.56 3,333.26 6,550.00 55.16 339.18 4,976.77 4,916.77 3,155.95 -1,203.30 5,956,145.229 711,709.126 2.96 3,353.66 6,575.00 55.08 339.58 4,991.07 4,931.07 3,175.14 -1,210.52 5,956,164.211 711,701.364 1.35 3,374.03 11122017 8:33.-16AM Page 10 COMPASS 5000.1 Build 81D ae BP Final Survey Report BAER F�UGHES ce�omvaw Company: North America -ALASKA -BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing I Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing I Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K - Alaska PROD - ANCP1 Survey Mo Inc Azi (azimuth) TVD TVDSS NIS PJW Northing Easting DLeg V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 6,600.00 54.25 339.92 5,005.40 4,945.40 3,194.36 -1,217.61 5,956,183.220 711,693.733 1.21 3,35 6,625.00 55.57 340.12 5,019.64 4,959.64 3,213.67 -1,224.63 5,956,202.320 711,686.170 2.53 3,414.83 6,650.00 55.53 340.26 5,033.79 4,973.79 3,233.06 -1,231.62 5,956,221.509 711,678.637 0.49 3,435.34 6,675.00 55.6.9 340.57 5,047.91 4,987.91 3,252.50 -1,238.54 5,956,240.742 711,671.175 1.21 3,455.88 6,700.00 55.78 341.10 5,061.98 5,001.98 3,272.02 -1,245.32 5,956,260.057 711,663.843 1,79 3,476.46 6,725.00 5591 341.49 5,076.02 5,016.02 3,291.61 -1,251.95 5,956,279.455 711,656.657 1.39 3,497.08 6,750.00 55.52 341.91 5,090.08 5,030.08 3,311.23 -1,258.44 5,956,298.886 711,649.614 1.81 3,517.69 6,775.00 55.23 342.19 5,104.14 5,044.14 3,330.90 -1,264.81 5,956,318.362 711,642.690 1.55 3,538.31 6,800.00 55.65 342.48 5,118.20 5,058.20 3,350.60 -1,271.09 5,956,337.875 711,635.862 1.47 3,558.94 6,825.00 55.34 342.75 5,132.27 5,072.27 3,370.32 -1,277.26 5,956,357.411 711,629.132 1.17 3,579.57 6,850.00 55.94 343.06 5,146.29 5,086.29 3,390.10 -1,283.35 5,956,377.014 711,622.490 1.10 3,600.24 6,875.00 55.85 343.24 5,160.31 5,100.31 3,409.91 -1,289.35 5,956,396.547 711,615.932 0.70 3,620.92 6,900.00 56.32 343.37 5,174.26 5,114.26 3,429.79 -1,295.31 5,956,416.341 711,609.412 1.93 3,641.64 6,925.00 56.15 343.77 5,188.15 5,128.15 3,449.72 -1,301.18 5.956,436.100 711,602.972 1.49 3,662.41 6,950.00 56.21 344.05 5,202.07 5,142.07 3,469.68 -1,306.94 5,956,455.885 711,596.654 0.96 3,68- C, 6,975.00 56.35 343.86 5,215.95 5,155.95 3,489.66 -1,312.69 5,956,475.697 711,590.343 0.84 3,70. . 7,000.00 56.73 343.52 5,229.73 5,169.73 3,509.68 -1,318.55 5,956,495.539 711,583.922 1.90 3,724.79 7,025.00 57.21 343.07 5,243.36 5,183.36 3,529.75 -1,324.57 5,956,515.435 711,577.331 2.44 3,745.72 7,050.00 57.56 342.36 5,256.83 5,196.83 3,549.86 -1,330.83 5,956,535.355 711,570.508 2.77 3,766.75 7,075.00 58.27 341.99 5,270.11 5,210.11 3,570.02 -1,337.31 5,956,555.327 711,563.456 3.10 3,787.88 7,100.00 58.96 341.52 5,283.13 5,223.13 3,590.29 -1,343.99 5,956,575.398 711,556.203 3.19 3,809.17 7,125.00 58.96 341.09 5,296.02 5,236.02 3,610.58 -1,350.86 5,956,595.484 711,548.766 1.47 3,830.52 7,150.00 59.19 341.05 5,308.87 5,248.87 3,630.87 -1,357.82 5,956,615.564 711,541.238 0.93 3,851.88 7,175.00 59.19 341.08 5,321.67 5,261.67 3,651.18 -1,364.78 5,956,635.668 711,533.699 0.10 3,873.28 7,200.00 58.82 340.69 5,334.55 5,274.55 3,671.43 -1,371.80 5,956,655.709 711,526.111 1.99 3,894.62 7,225.00 59.21 340.20 5,347.42 5,287.42 3,691.62 -1,378.98 5,956,675.693 711,518.369 2.29 3,915.96 7,250.00 59.C3 339.42 5,360.25 5,300.25 3,711.76 -1,386.38 5,956,695.611 711,510.397 2.77 3,937.29 11/2/2017 8: 33: 16AM Page 11 COMPASS 5000.1 Build BID BP BAKER s bp Final Survey Report JUGHES GE company Company: North America -ALASKA -BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A 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) 7,275.00 59.03 339.03 5,373.11 5,313.11 3,731.80 -1,393.98 5,956,715.429 711,502.230 1.34 3,958.58 7,300.00 59.13 338.82 5,385.96 5,325.96 3,751.82 -1,401.70 5,956,735.214 711,493.955 0.82 3,97^ - 7,325.00 59.13 338.84 5,398.79 5,338.79 3,771.83 -1,409.45 5,956,754.996 711,485.642 0.07 4,06 7,350.00 59.54 338.90 5,411.54 5,351.54 3,791.88 -1,417.20 5,956,774.826 711,477.326 1.65 4,022.50 7,375.00 59.30 338.91 5,424.26 5,364.26 3,811.97 -1,424.94 5,956,794.678 711,469.015 0.96 4,043.86 7,400.00 59.35 339.03 5,437.01 5,377.01 3,832.03 -1,432.66 5,956,814.521 711,460.734 0.46 4,065.20 7,425.00 59.40 339.58 5,449.75 5,389.75 3,852.16 -1,440.26 5,956,834.421 711,452.565 1.90 4,086.57 7,450.00 59.75 339.90 5,462.41 5,402.41 3,872.38 -1,447.73 5,956,854.424 711,444.532 1.78 4,108.00 7,475.00 59.89 340.08 5,474.97 5,414.97 3,892.69 -1,455.12 5,956,874.513 711,436.565 0.84 4,129.49 7,500.00 60.06 340.33 5,487.48 5,427.48 3,913.06 -1,462.45 5,956,894.662 711,428.662 1.10 4,151.03 7,525.00 60.11 340.68 5,499.95 5,439.95 3,933.48 -1,469.68 5,956,914.875 711,420.855 1.23 4,172.60 7,550.00 60.26 340.93 5,512.38 5,452.38 3,953.97 -1,476.82 5,956,935.149 711,413.147 1.05 4,194.21 7,575.00 60.62 341.07 5,524.72 - 5,464.72 3,974.53 -1;483.89 5,956,955.501 711,405.488 1.52 4,215.87 7,600.00 61.16 341.15 5,536.88 -5,476.88 3,995.19 -1,490.97 5,956,975.957 711,397.835 2.18 4,237.64 7,625.00 61.59 341.46 5,548.85 5,488.85 4,015.98 -1,498.00 5,956,996.535 711,390.216 2.04 4,259.51 7,650.00 62.08 341.80 5,560.65 5,500.65 4,036.90 -1,504.95 5,957,017.245 711,382.682 2.30 4,281.48 7,675.00 62.23 342.13 5,572.33 5,512.33 4,057.92 -1,511.79 5,957,038.062 711,375.246 1.31 4,3( 7,700.00 62.10 342.13 5,584.00 5,524.00 4,078.96 -1,518.57 5,957,058.901 711,367.870 0.52 4,325.59 7,725.00 62 Z3 342.31 5,595.64 5,535.64 4,100.03 -1,525.33 5,957,079.771 711,360.519 1.47 4,347.68 7,750.00 62.51 342.40 5,607.19 5,547.19 4,121.15 -1,532.05 5,957,100.698 711,353.204 0.45 4,369.80 7,775.00 61.52 342.07 5,618.93 5,558.93 4,142.18 -1,538.79 5,957,121.521 711,345.877 4.13 4,391.83 7,800.00 60.71 341.52 5,631.00 5,571.00 4,162.97 -1,545.62 5,957,142.112 711,338.453 3.77 4,413.66 7,825.00 59.23 340.77 5,643.51 5,583.51 4,183.45 -1,552.62 5,957,162.387 711,330.883 6.46 4,435.23 7,850.00 58.9 339.94 5,656.44 5,596.44 4,203.61 -1,559.81 5,957,182.327 711,323.123 4.10 4,456.53 7,875.00 57.93 339.38 5,669.61 5,609.61 4,223.53 -1,567.20 5,957,202.033 711,315.176 2.94 4,477.65 7,900.00 57.64 339.29 5,682.94 5,622.94 4,243.32 -1,574.66 5,957,221.603 711,307.155 1.20 4,498.66 7,925.00 57.76 339.64 5,696.30 5,636.30 4,263.11 -1,582.07 5,957,241.173 711,299.186 1.28 4,519.65 11/212017 8:33: 16AM Page 12 COMPASS 50001 Build 81D r - by BP Final Survey Report BA ER BA ..'p ,. Company: North America -ALASKA -BP Local Coordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table Q 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A 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) (°/100usk) (usft) 7,950.00 57.16 339.94 5,709.75 5,649.75 4,282.89 -1,589.35 5,957,260.736 711,291.348 2.60 4,51 ~ 7,975.00 56.45 340.24 5,723.43 5,663.43 4,302.56 -1,596.48 5,957,280.196 711,283.670 2.97 4,561.42 8,000.00 56.06 340.47 5,737.32 5,677.32 4,322.14 -1,603.47 5,957,299.569 711,276.130 1.77 4,582.11 8,025.00 56.28 340.35 5,751.23 5,691.23 4,341.70 -1,610.43 5,957,318.928 711,268.616 0.97 4,602.78 8,050.00 56.13 339.86 5,765.14 5,705.14 4,361.24 -1,617.50 5,957,336.255 711,260.996 1.74 4,623.45 8,075.00 56.20 339.35 5,779.06 5,719.06 4,380.70 -1,624.74 5,957,357.506 711,253.212 1.72 4,644.09 8,100.00 56.C5 339.01 5,792.99 5,732.99 4,400.10 -1,632.11 5,957,376.689 711,245.288 1.28 4,664.70 8,125.00 56.58 339.15 5,806.86 5,746.86 4,419.54 -1,639.54 5,957,395.901 711,237.314 2.17 4,685.35 8,150.00 56.76 339.52 5,820.60 5,760.60 4,439.08 -1,646.91 5,957,415.228 711,229.393 1.43 4,706.10 8,175.00 56.73 339.86 5,834.31 5,774.31 4,458.69 -1,654.17 5,957,434.620 711,221.585 1.14 4,726.88 8,200.00 56.52 340.28 5,848.06 5,788.06 4,478.31 -1,661.29 5,957,454.036 711,213.916 1.64 4,747.65 8,225.00 56.57 340.34 5,861.84 5,801.84 4,497.95 -1,668.31 5,957,473.467 711,206.335 0.28 4,768.41 8,250.00 56.33 340.30 5,875.66 5,81566 4,517.57 -1,675.33 5,957,492.878 711,198.767 0.97 4,789.14 8,275.00 56.54 340.31 5,889.48 5.829.48 4,537.18 -1,682.35 5,957,512.283 711,191.194 0.84 4,809.87 8,300.00 56.57 340.27 5,903.26 5,843.26 4,556.82 -1,689.39 5,957,531.713 711,183.606 0.18 4,83- 8,325.00 56.44 340.20 5,917.05 5,857.05 4,576.44 -1,696.44 5,957,551.125 711,176.004 0.57 4,85. 8,350.00 56.35 340.13 5,930.89 5,870.89 4,596.03 -1,703.50 5,957,570.503 711,168.387 0.43 4,872.09 8,375.00 56.53 340.20 5,944.71 5,884.71 4,615.62 -1,710.57 5,957,589.890 711,160.767 0.76 4,892.82 8,400.00 56.70 340.14 5,958.47 5,898.47 4,635.26 -1,717.65 5,957,609.318 711,153.133 0.71 4,913.58 8,425.00 56.79 340.04 5,972.18 5,912.18 4,654.92 -1,724.77 5,957,628.764 711,145.460 0.49 4,934.38 8,450.00 56.90 339.94 5,985.85 5,925.85 4,674.58 -1,731.93 5,957,648.219 711,137.745 0.55 4,955.20 8,475.00 57.08 339.95 5,999.47 5,939.47 4,694.28 -1,739.12 5,957,667.700 711,130.002 0.72 4,976.05 8,500.00 57.16 340.09 6,013.04 5,953.04 4,714.01 -1,746.30 5,957,687.219 711,122.273 0.57 4,996.93 8,525.00 56.94 340.24 6,026.64 5,966.64 4,733.74 -1,753.42 5,957,706.743 711,114.599 1.01 5,017.80 8,550.00 57.73 340.37 6,040.13 5,980.13 4,753.56 -1,760.51 5,957,726.348 711,106.949 3.19 5,038.75 8,575.00 57.67 340.34 6,053.49 5,993.49 4,773.46 -1,767.61 5,957,746.040 711,099.284 0.26 5,059.78 8,600.00 58.10 340.79 6,066.78 6,006.78 4,793.43 -1,774.66 5,957,765.799 711,091.677 2.30 5,080.86 11/2/2017 8:33: 16AM Page 13 COMPASS 5000.1 Build 81D BP BAKER hY gUGHES a GEc mpzry Company: North America - ALASKA - BP Local Coordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K - Alaska PROD - ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS N/S EIW Northing Easting - DLeg V. Sec (usft) (•) (•) (usft) (usft) (usft) (usft) (usft) (usft) (•1100usft) (usft) 8,625.00 58.18 341.21 6,079.98 6,019.98 4,813.50 -1,781.57 5,957,785.671 711,084.199 1.46 5,102.01 8,650.00 58.29 341.63 6,093.14 6,033.14 4,833.65 -1,788.34 5,957,805.618 711,076.859 1.49 5,12' ^n 8,675.00 58.73 341.90 6,106.20 6,046.20 4,853.90 -1,795.01 5,957,825.668 711,069.618 1.99 5.14 8,700.00 58.70 341.93 6,119.18 6,059.18 4,874.21 -1,801.65 5,957,845.780 711,062.414 0.16 5,165.77 8,725.00 58.57 341.96 6,132.12 6,072.12 4,894.55 -1,808.28 5,957,865.922 711,055.211 1.08 5,187.11 8,750.00 59.15 341.96 6,144.97 6,084.97 4,914.93 -1,814.92 5,957,886.113 711,047.997 0.72 5,208.50 8,775.00 59.09 341.98 6,157.80 6,097.80 4,935.34 •11821.56 5,957,906.319 711,040.781 0.25 5,229.91 8,800.00 59.45 341.97 6,170.58 6,110.58 4,955.77 -1,828.21 5,957,926.556 711,033.556 1.44 5,251.35 8,825.00 59.37 341.99 6,183.30 6,123.30 4,976.24 -1,834.86 5,957,946.824 711,026.322 0.33 5,272.82 8,850.00 59.41 342.01 6,196.03 6,136.03 4,996.70 -1,841.51 5,957,967.090 711,019.097 0.17 5,294.28 8,875.00 59.10 342.10 6,208.79 6,148.79 5,017.15 -1,848.14 5,957,987.345 711,011.898 0.90 5,315.73 8,900.00 59.28 341.98 6,221.58 6,161.58 5,037.59 -1,854.76 5,958,007.584 711,004.698 0.52 5,337.16 8,925.00 59.44 341.90 6,234.32 6,174.32 5,058.04 -1;861.43 5,958;027,836 710,997.454 0.70 5,358.62 8,950.00 59.51 341.99 6,247:02 6,187.02 5,078.51 -1;868.10 5,958;048.113 710,990.203 0.42 5,380.10 8,975.00 59.41 341.95 6,259.72 6,199.72 5,098.99 -1;874.77 5,958,0684389 710,982.962 0.42 5,401.58 9,000.00 59.61 341.93 6,272.40 6,212.40 5,119.47 -1,881.45 5,958,088.673 710,975.707 0.80 5,423.07 9,025.00 59.54 341.85 6,285.06 6,225.06 5,139.96 -1,888.15 5,958,108.963 710,968.429 0.39 5A, 9,050.00 59.45 341.76 6,297.75 6,237.75 5,160.42 -1,894.87 5,958,129.226 710,961.127 0.48 5,466.06 9,075.00 59.43 341.94 6,310.47 6,250.47 5,180.88 -1,901.58 5,958,149.484 710,953.845 0.63 5,487.53 9,100.00 59.07 341.70 6,323.25 6,263.25 5,201.29 -1,908.28 5,958,169.697 710,946.567 1.66 5,508.96 9,125.00 59.34 341.70 6,336.05 6,276.05 5,221.68 -1,915.03 5,958,189.886 710,939.250 1.08 5,530.38 9,150.00 56.91 341.89 6,348.88 6,288.88 5,242.06 -1,921.73 5,958,210.070 710,931.972 1.84 5,551.78 9,175.00 58.38 341.80 6,361.88 6,301.88 5,262.35 -1,928.38 5,958,230.159 710,924.749 2.14 5,573.07 9,200.00 57.97 341.51 6,375.07 6,315.07 5,282.51 -1,935.07 5,958,250.123 710,917.496 1.91 5,594.25 9,225.00 57.87 341.58 6,388.35 6,328.35 5,302.60 -1,941.77 5,958,270.017 710,910.224 0.47 5,615.37 9,250.00 58.05 341.71 6,401.61 6,341.61 5,322.72 -1,948.45 5,958,289.933 710,902.985 0.84 5,636.50 9,275.00 57.64 341.56 6,414.91 6,354.91 5,342.80 -1,955.11 5,958,309.823 710,895.751 1.72 5,657.61 11/22017 8:33:16AM Page 14 COMPASS 5000.1 Build 610 r b �errr P BP Final Survey Report B F�UGHES E,.,, Company: North America -ALASKA - BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay ND Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table Q 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K-Alaska PROD -ANCP1 Survey MD Inc Azl (azimuth) ND NDSS WS ENV Northing Easting Di V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usit) (°/100usft) (usft) _ 9,300.00 57.52 341.16 6,428.32 6,368.32 5,362.80 -1,961.86 5,958,329.619 710,888.442 1.43 5,67 9,325.00 57.21 341.14 6,441.80 6,381.80 5,382.72 -1,968.66 5,958,349.342 710,881.079 1.24 5,699.63 9,350.00 57.16 340.99 6,455.35 6,395.35 5,402.60 -1,975.48 5,958,369.013 710,873.702 0.54 5,720.56 9,375.00 56.63 340.75 6,468.99 6,408.99 5,422.39 -1,982.34 5,958,388.601 710,866.280 2.08 5,741.42 9,400.00 56.22 340.83 6,482.81 6,422.81 5,442.06 -1,989.20 5,958,408.073 710,858.871 1.86 5,762.18 9,425.00 56.37 340.89 6,496.68 6,436.68 5,461.71 -1,996.02 5,958,427.519 710,851.499 0.63 5,782.89 9,450.00 56.80 340.73 6,510.45 6,450.45 5,481.42 -2,002.88 5,958,447.024 710,844.085 1.80 5,803.67 9,475.00 56.63 340.58 6,524.17 6,464.17 5,501.14 -2,009.80 5,958,466.538 710,836.607 0.84 5,824.48 9,500.00 56.13 340.23 6,538.01 6,478.01 5,520.75 -2,016.78 5,958,485.944 710,829.073 2.31 5,845.20 9,525.00 55.49 339.50 6,552.06 6,492.06 5,540.17 -2,023.90 5,958,505.150 710,821.409 3.52 5,865.77 9,550.00 55.33 339.17 6,566.25 6,506.25 5,559.42 -2,031.16 5,958,524.192 710,813.604 1.26 5,886.21 9,575.00 55.73 339.21 6,580.39 6,520.39 5,578.70 -2,038.49 5,958,543.248 710,805.738 1.80 5,906.68 9,600.00 54.68 339.22 6,594.61 6,534.61 5,597.92 -2,045.78 5,958,562.255 710,797.900 3.60 5,927.10 9,625.00 55.19 339.65 6,608.94 6,548.94 5,617.10 -2,052.98 5,958,581.225 710,790.164 1.88 5,947.46 9,650.00 54.60 339.63 6,623.32 6,563.32 5,636.27 -2,060.10 5,958,600.190 710,782.509 2.36 5,961 9,675.00 54.40 339.25 6,637.83 6,577.83 5,655.33 -2,067.24 5,958,619.035 710,774.825 1.47 5,98, 9,700.00 53.99 339.05 6,652.46 6,592.46 5,674.28 -2,074.46 5,958,637.770 710,767.076 1.76 6,008.14 9,725.00 53.50 339.07 6,667.25 6,607.25 5,693.11 -2,081.66 5,958,656.386 710,759.341 1.96 6,028.16 9,750.00 53.51 338.76 6,682.11 6,622.11 5,711.86 -2,088.89 5,958,674.925 710,751.583 1.00 6,048.10 9,775.00 53.23 338.55 6,697.03 6,637.03 5,730.55 -2,096.20 5,958,693.396 710,743.755 1.31 6,068.00 9,800.00 52.84 338.91 6,712.06 6,652.06 5,749.16 -2,103.44 5,958,711.797 710,735.985 1.94 6,087.82 9,825.00 52.99 338.92 6,727.14 6,667.14 5,767.77 -2,110.62 5,958,730.194 710,728.287 0.60 6,107.61 9,850.00 52.89 338.48 6,742.20 6,682.20 5,786.36 -2,117.86 5,958,748.568 710,720.517 1.46 6,127.40 9,875.00 52.61 338.05 6,757.34 6,697.34 5,804.84 -2,125.23 5,958,766.836 710,712.628 1.77 6,147.12 9,900.00 52.58 337.68 6,772.51 6,712.51 5,823.25 -2,132.72 5,958,785.023 710,704.623 1.21 6,166.80 9,925.00 53.13 337.56 6,787.58 6,727.58 5,841,69 -2,140.31 5,958,803.239 710,696.512 1.84 6,186.53 9,950.00 53.CS 337.65 6,802.60 6,742.60 5,860.17 -2,147.93 5,958,821.498 710,688.376 0.40 6,206.31 11/22017 8:33: 16AM Page 15 COMPASS 5000.1 Build 81D BP BA ER by Final Survey Report F�U t!E 0 �E�omoa v Company: North America -ALASKA -BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM RSK- Alaska PROD -ANCP1 Survey MD Inc Azt (azimuth) TVD TVDSS NIS FJW Northing Easting DLeg V. Sec (usft) (°) (9 (usft) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) 9,975.00 52.96 337.62 6,817.64 6,757.64 5,878.64 -2,155.53 5,958,839.741 710,680.258 0.41 6,226.07 10,000.00 53.18 337.58 6,832.66 6,772.66 5,897.11 -2,163.14 5,958,857.994 710,672.124 0.89 6,2z 10,025.00 53.`3 337.56 6,847.58 6,787.58 5,915.65 -2,170.80 5,958,876.310 710,663.949 1.40 6,26S.o8 10,050.00 53.36 337.47 6,862.47 6,802.47 5,934.21 -2,178.48 5,958,894.640 710,655.747 0.74 6,285.55 10,075.00 53.54 337.55 6,877.36 6,817.36 5,952.77 -2,186.16 5,958,912.970 710,647.542 0.76 6,305.41 10,100.00 53.69 337.49 6,892.19 6,832.19 5,971.36 -2,193.86 5,958,931.341 710,639.324 0.63 6,325.32 10,125.00 53.82 337.48 6,906.97 6,846.97 5,989.99 -2,201.58 5,958,949.739 710,631.080 0.52 6,345.27 10,150.00 54.02 337.51 6,921.69 6,861.69 6,008.65 -2,209.31 5,958,968.178 710,622.821 0.81 6,365.25 10,175.00 54.23 337.58 6,936.34 6,876.34 6,027.38 -2,217.05 5,958,986.672 710,614.557 0.87 6,385.29 10,200.00 54.38 337.60 6,950.93 6,890.93 6,046.15 -2,224.79 5,959,005.215 710,606.289 - 0.60 6,405.38 10,225.00 54.69 337.79 6,965.43 6,905.43 6,064.98 -2,232.52 5,959,023.826 710,598.031 1.39 6,425.53 10,250.00 54.66 337.64 6,979.89 6,919.89 6,083.86 -2,240.25 5,959,042.472 710,589.766 0.50 6,445.72 10,275.00 54.66 337.49 6,994.35 6,934.35 6,102.71 -2,248.03 5,959,061.093 710,581.453 0.49 6,465.89 10,300.00 54.94 337.81 7,008.76 6.948.76 6,121.60 -2,255.80 5,959,079.759 710,573.153 1.53 6,486.11 10,325.00 55.14 337.66 7,023.09 6,963.09 6,140.56 -2,263.56 5,959,098.492 710,564.857 0.94 6,506.39 10,350.00 54.92 337.37 7,037.42 6,977.42 6,159.49 -2,271.40 5,959,117.190 710,556.490 1.30 6,526.65 10,375.00 54.59 337.66 7,051.82 6,991.82 6,178.37 -2,279.21 5,959,135.837 710,548.146 1.32 6,5< 10,400.00 54.09 337.92 7,066.38 7,006.38 6,197.18 -2,286.90 5,959,154.428 710,539.934 2.54 6,566.98 10,425.00 53.28 338.30 7,081.08 7,021.08 6,215.95 -2,294.43 5,959,172.970 710,531.867 1.49 6,587.01 10,450.00 53.42 338.71 7,095.90 7,035.90 6,234.68 -2,301.81 5,959,191.487 710,523.962 2.27 6,606.98 10,475.00 52.E0 339.27 7,110.94 7,050.94 6,253.32 -2,308.97 5,959,209.917 710,516.278 3.74 6,626.80 10,500.00 52.37 339.48 7,126.17 7,066.17 6,271.88 -2,315.96 5,959,228.269 710,508.770 1.14 6,646.50 10,525.00 51.85 339.23 7,141.52 7,081.52 6,290.35 -2,322.91 5,959,246.527 710,501.295 2.22 6,666.10 10,550.00 51.44 338.75 7,157.03 7,097.03 6,308.65 -2,329.94 5,959,264.621 710,493.751 2.23 6,685.55 10,575.00 50.89 339.38 7,172.71 7,112.71 6,326.83 -2,336.90 5,959,282.604 710,486.281 2.95 6,704.89 10,600.00 50:39 339.92 7,188.56 7,128.56 6,344.96 -2,343.62 5,959,300.528 710,479.049 2.61 6,724.10 10,625.00 50.12 339.70 7,204.55 7,144.55 6,363.00 -2,350.26 5,959,318.373 710,471.907 1.27 6,743.21 11/2!2017 8:33 16AM Page 16 COMPASS 5000.1 Build 91D r - �•.� BP BAKER �00t by Final Survey Report gUGHES - Company: North America - ALP SKA-BP Local Coordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PS DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04.21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K - Alaska PROD - ANCPI Survey MD Inc Azi (azimuth) TVD TVDSS NIS EIW Northing Easting DLeg V. Sec (usft) (I V) (usft) (usft) (usft) (usft) (usft) (usft) ('/100usft) (usft) _ 10,650.00 49.78 340.00 7,220.63 7,160.63 6,380.96 -2,356.85 5,959,336.144 710,464.809 1.64 6,7E 10,675.00 49.86 340.26 7,236.76 7,176.76 6,398.93 -2,363.34 5,959,353.916 710,457.811 0.86 6,781.24 10,700.00 49.92 340.16 7,252.87 7,192.87 6,416.92 -2,369.82 5,959,371.716 710,450.832 0.39 6,800.27 10,725.00 50.16 340.19 7,268.93 7,208.93 6,434.94 -2,376.31 5,959,389.550 710,443.825 0.96 6,819.33 10,750.00 49.89 340.91 7,284.99 7,224.99 6,453.01 -2,382.69 5,959,407.426 710,436.937 2.46 6,838.41 10,775.00 50.00 341.06 7,301.08 7,241.08 6,471.10 -2,388.93 5,959,425.333 710,430.193 0.64 6,857.47 10,800.00 50.31 340.67 7,317.09 7,257.09 6.489.23 -2,395.22 5,959,443.281 710,423.391 1.72 6,876.59. 10,825.00 50.20 341.12 7,333.08 7,273.08 6,507.40 -2,401.51 5,959,461.258 710,416.588 1.45 6,895.74 10,850.00 50.35 341.57 7,349.06 7,289.06 6,525.62 -2,407.66 5,959,479.293 710,409.925 1.51 6,914.90 10,875.00 50.75 341.05 7,364.94 7,304.94 6,543.90 -2,413.85 5,959,497.396 710,403.224 2.27 6,934.14 10,900.00 50.94 341.54 7,380.73 7,320.73 6,562.26 -2,420.07 5,959,515.574 710,396.490 1.70 6,953.46 10,925.00 51.14 341.49 7,396.45 7,336.45 6,580.70 -2,426.23 5,959,533.828 710,389.807 0.81 6,972.85 10,950.00 51.30 341.32 7,412.10 7,352.10 6,599.17 -2;432.44 5,959,552,115 710,383.073 0.83 6,992.27 10,975.00 51.58 342.02 7,427.69 7,367.69 6,617.73 -2,438.59 5,959,570.490 710,376.403 2.46 7,011.77 11,000.00 51.90 341.69 7,443.17 7,383.17 6,636.38 -2,444.70 5,959,588.962 710,369.764 1.65 7,03'^5 11,025.00 52.09 341.73 7,458.56 7,398.56 6655.09 -2,450.89 5,959,607.483 710,363.055 0.77 7,05, 11,050.00 52.39 342.07 7,473.87 7,413.87 6,673.87 -2,457.03 5,959,626.087 710,356.386 1.61 7,070.71 11,075.00 _ 52.58 342.00 7,489.10 7,429.10 6,692.74 -2,463.14 5,959,644.768 710,349.738 0.79 7,090.49 11,100.00 52.68 342.57 7,504.23 7,444.23 6,711.69 -2,469.20 5,959,663.540 710,343.151 2.18 7,110.35 11,125.00 53.13 342.43 7,519.28 7,459.28 6,730.73 -2,475.20 5,959,682.404 710,336.611 1.10 7,130.28 11,150.00 53.50 342.06 7,534.21 7,474.21 6,749.82 -2,481.31 5,959,701.316 710,329.959 1.90 7,150.28 11,175.00 53.83 342.80 7,549.03 7,489.03 6,769.02 -2,487.39 5,959,720.335 710,323.339 2.73 7,170.38 11,200.00 53.97 342.75 7,563.76 7,503.76 6,788.32 -2,493.37 5,959,739.450 710,316.814 0.58 7,190.55 11,225.00 54.52 342.76 7,578.36 7,518.36 6,807.69 -2,499.39 5,959,756.647 710,310.254 2.20 7,210.81 11,250.00 54.81 342.72 7,592.82 7,532.82 6,827.17 -2,505.44 5,959,777.944 710,303.654 1.17 7,231.17 11,275.00 55.33 342.63 7,607.13 7,547.13 6,846.74 -2,511.55 5,959,797.335 710,296.997 - 2.34 7,251.64 11,300.00 55.19 343.25 7,621.36 7,561.36 6,866.39 -2,517.58 5,959,816.803 710,290.414 2.19 7,272.16 11/2/2017 8:33: 16AM Page 17 COMPASS 5000.1 Build 610 BP BAER , IC by Final Survey Report UGHES , Company: North America -ALASKA -BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing I Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing I Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K-Alaska PROD -ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS NIS ENV Northing Easting DLeg V. Sec (usft) (°) (°) (usft) (usft) (usft) (usft) (usft) (usft) (°I100usft) (usft) 11,325.00 55.43 343.27 7,635.59 7,575.59 6,886.07 -2,523.50 5,959,836.311 710,283.939 0.96 7,292.70 11,350.00 55.-4 343.30 7,649.72 7,589.72 6,905.83 -2,529.43 5,959,855.887 710,277.451 1.24 7,31-1 11,375.00 55.54 343.09 7,663.83 7,603.83 6,925.58 -2,535.39 5,959,875.466 710,270.928 1.06 7,333.71 11,400.00 55.59 342.78 7,677.97 7,617.97 6,945.29 -2,541.45 5,959,894.997 710,264.322 1.04 7,354.50 11,425.00 55.32 343.47 7,692.14 7,632.14 6,965.00 -2,547.42 5,959,914.524 710,257.789 2.52 7,375.07 11,450.00 55.38 343.55 7,706.36 7,646.36 6,984.72 -2,553.26 5,959,934.070 710,251.396 0.36 7,395.62 11,475.00 55.36 342.91 7,720.56 7,660.56 7,004.42 -2,559.20 5,959,953.589 710,244.906 2.11 7,416.17 11,500.00 55.38 343.62 7,734.77 7,674.77 7,024.12 -2,565.12 5,959,973.112 710,238.427 2.34 7,436.71 11,525.00 55.33 343.25 7,748.98 7,688.98 7,043.83 -2,570.98 5,959,992.651 710,232.008 1.23 7,457.26 11,550.00 55.13 344.01 7,763.24 7,703.24 7,063.53 -2,576.77 5,960,012.181 710,225.665 2.62 7,477.78 11,575.00 55.55 344.19 7,777.46 7,717.46 7,083.31 -2,582.40 5,960,031.790 710,219.474 1.78 7,498.33 11,600.00 55.12 343.02 7,791.68 7.73168 7,103.03 -2,588.21 5,960,051.342 710,213.116 4.22 7,518.88 11,625.00 54.55 344.15 7,806.08 7,74608 7,122.64 -2,593.98 5,960,070.774 710,206.787 4.34 7,539.30 11,650.00 54.95 344.55 7,820.51 7,760.51 7,142.30 -2,599.49 5,960.090 268 710,200.726 2.07 7,559.71 11,675.00 54.69 343.47 7,834.91 7,774.91 7,161.94 -2,605.12 5,960,109.743 710,194.544 3.68 7,580.13 11,700.00 54.94 343.97 7,849.32 7,789.32 7,181.55 -2,610.85 5,960,129.185 710,188.264 1.92 7,600.54 11,725.00 54.34 345.00 7,863.78 7,803.78 7,201.20 -2,616.30 5,960,148.666 710,182.256 4.13 7,6; 11,750.00 53.90 343.93 7,878.44 7,818.44 7,220.71 -2,621.73 5,960,168.020 710,176.282 3.89 7,641.17 11,775.00 54.38 343.81 7,893.08 7,833.08 7,240.18 -2,627.35 5,960,187.315 710,170.104 1.96 7,661.42 11,800.00 53.83 344.83 7,907.74 7,847.74 7,259.68 -2,632.83 5,960,206.649 710,164.081 3.97 7,681.66 11,825.00 54.14 344.81 7,922.44 7,862.44 7,279.19 -2,638.12 5,960,226.007 710,158.236 1.24 7,701.88 11,850.00 53.57 343.64 7,937.18 7,877.18 7,298.62 -2,643.61 5,960,245.270 710,152.201 4.41 7,722.06 11,875.00 53..3 344.76 7,952.12 7,892.12 7,317.91 -2,649.07 5,960,264.399 710,146.197 4.09 7,742.10 11,900.00 53.47 345.19 7,967.07 7,907.07 7,337.26 -2,654.27 5,960,283.596 710,140.457 2.08 7,762.14 11,925.00 53.06 344.00 7,982.02 7,922.02 7,356.58 -2,659.59 5,960,302.752 710,134.592 4.15 7,782.17 11,950.00 53,27 344.40 7,997.01 7,937.01 7,375.83 -2,665.04 5,960,321.842 710,128.601 1.53 7,802.17 11,975.00 52.69 345.73 8,012.06 7,952.06 7,395.12 -2,670.18 5,960,340.973 710,122.913 4.84 7,822.12 1122017 8:33: 16AM Page 18 COMPASS 5000.1 Build 81D r BP te bp BAKER Survey Report BAJUGHES Company: North America -ALASKA - BP Local Coordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K - Alaska PROD - ANCP1 Survey MD Inc Azi (azimuth) TVD TVDSS NIS EIW Northing Easting DLeg V. Sec (usft) (°I (°) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 12,000.00 52.':1 344.69 8,027.31 7,967.31 7,414.27 -2,675.24 5,960,359.972 710,117.317 4.03 7,84 12,025.00 52.04 344.26 8,042.61 7,982.51 7,433.32 -2,680.53 5,960,378.866 710,111.487 1.90 7,861.0 12,050.00 52.32 345.59 8,057.87 7,997.87 7,452.44 -2,685.68 5,960,397.831 710,105.798 4.24 7,881.49 12,075.00 51.67 345.32 8,073.26 8,013.26 7,471.51 -2,690.63 5,960,416.750 710,100.314 2.74 7,901,19 12,100.00 51.75 344.41 8,088.76 8,028.76 7,490.45 -2,695.75 5,960,435.538 710,094.657 2,87 7,920.81 12,125.00 51.89 345.25 8,104.21 8,044.21 7,509.42 -2,700.89 5,960,454.351 710,088.980 2.70 7,940.46 12,150.00 50.92 345.03 8,119.80 8,059.80 7,528.30 -2,705.90 5,960,473.086 710,083.437 3.94 7,959.99 12,175.00 51.46 344.95 8,135.47 8,075.47 7,547.12 -2,710.95 5,960,491.751 710,077.861 2.17 7,979.47 12,200.00 50.90 344.80 8,151.14 8,091.14 7,565.92 -2,716.03 5,960,510.402 710,072.249 2.29 7,998.95 12,225.00 50.82 345.01 8,166.93 8,106.93 7,584.64 -2,721.08 5,960,528.971 710,066.672 0.73 8,018.33 12,250.00 50.15 345.46 8,182.83 8,122.83 7,603.29 -2,725.99 5,960,547.473 710,061.231 3.02 8,037.62 12,275.00 50.16 345.54 8,198.85 8,138.85 7,621.87 -2,730.80 5,960,565.912 710,055.901 0.25 8,056.81 12,300.00 49.85 345.62 8,214.92 8,154.92 7,640.42 -2,735.57 5,960,584.319 710,050.608 1.22 8,075.97 12,325.00 49.87 345.71 8,231.03 8,171.03 7,658,94 -2,740.30 5,960,602.695 710,045.354 0.28 8,095.08 12,350.00 49.21 345.96 8,247.25 8,187.25 7,677.39 -2,744.96 5,960,620:998 710,040.179 2.75 8,114.10 12,375.00 49.07 346.07 8,263.61 8,203.61 7,695.73 -2,749.53 5,960,639.207 710,035.092 0.65 8,13. 12,400.00 48.^3 346.23 8,280.02 8,220.02 7,714.04 -2,754.04 5,960,657.384 710,030.061 0.90 8,151.87 12,425.00 48.58 346.39 8,296.51 8,236.51 7,732.30 -2,758.49 5,960,675.506 710,025.099 1.29 8,170.66 12,450.00 48.32 346.62 8,313.09 8,253.09 7,750.49 -2,762.86 5,960,693.567 710,020.220 1.25 8,189.37 12,475.00 48.04 346.62 8,329.76 8,269.76 7,768.62 -2,767.17 5,960,711.562 710,015.397 1.12 8,208.00 12,500.00 47.08 346.71 8,346.49 8,286.49 7,786.70 -2,771.45 5,960,729.513 710,010.602 0.36 8,226.58 12,525.00 47,23 346.90 8,363.24 8,303.24 7,804.76 -2,775.69 5,960,747.446 710,005.858 0.82 8,245.12 12,550.00 47.34 347.27 8,380.11 8,320.11 7,822.75 -2,779.81 5,960,765.311 710,001.225 2.24 8,263.58 12,573.00 47.15 347.36 8,395.72 8,335.72 7,839.23 -2,783.52 5,960,781.674 709,997.052 0.89 8,280.46 9518.1 12,575.00 47.13 347.37 8,397.08 8,337.08 7,840.66 -2,783.84 5,960,783.095 709,996.691 0.89 8,281.93 12,600.00 47.28 347.29 8,414.07 8,354.07 7,858.55 -2,787.86 5,960,800.871 709,992.163 0.64 8,300.27 1122017 8:33.16AM Page 19 COMPASS 5000.1 Build 81D BP BAKER i by Final Survey Repoli UGHES Company: North America - AL?SKA-BP Local Coordinate Reference: Well 04-21 TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Project: Prudhoe Bay MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 True Well: 04-21 North Reference: Survey Calculation Method: Minimum Curvature Wellbore: neap... 04-21A na-91A Database: EDM RSK-Alaska PROD-ANCPI 1122017 8:33: 16AM Page 20 COMPASS 5000.1 Build 81D Survey MD Inc (usft) (1 12,625.00 12,650.00 12,675.00 46.94 46.86 46.87 Azi (azimuth) (1 346.84 346.52 346.40 TVD (usft) 8,431.08 8,448.16 8,465.26 TVDSS (usft) 8,371.08 8,388.16 8,405.26 WS (usft) 7,876.41 7,894.17 7,911.91 EIW (usft) -2,791.96 -2,796.17 -2,800.44 Northing (usft) 5,960,818.599 5,960,836.235 5,960,853.842 Easting (usft) 709,987.560 709,982.853 709,978.082 DLeg (°1100usft) 1.89 0.99 0.35 V. Sec (usft) 8,318.58 8,33" -1 8,35 TIP to 04.21 12,691.00 46.96 346.36 8,476.19 8,416.19 7,923.26 -2,803.19 5,960,865.116 709,975.010 0.59 8,366.76 KOP-Top of WS 12715.71 44.03 346.35 8,493.45 8,433.45 7,940.44 -2,807.36 5,960,882.166 709,970.356 10.44 8,384.43 Interpolated Azimuth 12,740.36 40.86 346.03 8,511.59 8,451.59 7,956.64 -2,811.34 5,960,898.253 709,965.917 14.31 8,401.12 Interpolated Azimuth 12,770.16 42.85 340.03 8,533.83 8,473.83 7,975.60 -2,817.15 5,960,917.037 709,959.579 14.69 8,420.92 Interpolated Azimuth 12,800.22 44.98 334.48 8,555.52 8,495.52 7,994.77 -2,825.21 5,960,935.968 709,950.981 14.94 8,441.47 Interpolated Azimuth 12,830.25 47.75 329.37 8,576,25 8,516.25 8,013.92 -2,835.45. 5,960,954:822 709,940.203 15.38 8,462.54 Interpolated Azimuth 12,860.28 12,890.39 12,920.38 12,950.42 12,975.44 50.40 54.70 58.74 62.89 65.45 324.68 315.32 310.66 306.30 301.14 8,595.93 8,614.26 8,630.72 8,645.37 8,656.27 8,535.93 8,554.26 8,570.72 8,585.37 8,596.27 8,032.93 8,051.17 8,068.24 8,084.53 8,097.02 -2,847.81 -2,863.18 -2,881.52 -2,902.06 -2,920.78 5,960,973.476 5,960,991.268 5,961,007.809 5,961,023.514 5,961,035.464 709,927.313 709,911.429 709,892.610 709,871.627 709,852.555 14.73 28.49 18.71 18.74 21.19 8,483.96 8,5C 8,52b..i 8,547.20 8,563.86 13,000.34 13,030.49 13,060.44 13,090.67 13,112.09 68.36 73.47 77.86 82.35 84.21 296.44 291.33 287.73 283.02 280.72 8,666.04 8,675.91 8,683.32 8,688.52 8,691.02 8,606.04 8,615.91 8,623.32 8,628.52 8,631.02 8108.03 8,119.54 8,129.23 8,137.12 8,141.49 -2,940.85 -2,966.89 -2,994.23 -3,022.93 -3,043.75 5,961,045.908 5,961,056.676 5,961,065.586 5,961,072.653 5,961,076.436 709,832.183 709,805.828 709,778.226 709,749.315 709,728.385 20.93 23.31 - 18.72 21.36 13.75 8,579.42 8,596.91 8,612.95 8,627.56 8,636.86 13,141.58 13,170.67 88.5 92.",8 286.39 294.40 8,692.81 8,692.54 8,632.81 8,632.54 8,148.39 8,158.51 -3,072.34 -3,099.58 5,961,082.522 5,961,091.873 709,699.607 709,672.093 24.83 29.80 8,650.49 8,666.93 1122017 8:33: 16AM Page 20 COMPASS 5000.1 Build 81D by r BP Final Survey Report BAKER JUGHES �p-, Company: North America - ALASKA - BP Local Coordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K - Alaska PROD - ANCP1 Survey MD Inc Azi (azimuth) ND TVDSS WS EIW Northing Basting DLeg V. Sec (usft) (°) C) (usft) (usft) (usft) (usft) (usft) (usft) (°1100usft) (usft) 13,200.62 90.00 301.96 8,691.76 8,631.76 8,172.64 -3,125.95 5,961,105.249 709,645.334 25.65 8,68 13,230.52 91.75 308.15 8,691.10 8,631.10 8,189.80 -3,150.41 5,961,121.709 709,620.401 20.94 8,709.02 13,260.46 91.2.3 314.89 8,690.32 8,630.32 8,209.63 -3,172.81 5,961,140.895 709,597.454 22.57 8,734.29 13,290.76 92.55 322.92 8,689.32 8,629.32 8,232.44 -3,192.70 5,961,163.124 709,576.928 26.84 8,761.24 13,320.66 93.29 327.54 8,687.79 8,627.79 8,256.96 -3,209.72 5,961,187.154 709,559.217 15.63 8,789.16 13,351.27 93.50 329.82 8,685.98 8,625.98 8,283.06 -3,225.61 5,961,212.794 709,542.602 7.47 8,818.34 13,380.88 92.95 331.20 8,684.31 8,624.31 8,308.79 -3,240.16 5,961,238.103 709,527.328 5.01 8,846.84 13,410.58 93.42 334.17 8,682.66 8,622.66 8,335.14 -3,253.76 5,961,264.051 709,512.982 10.11 8,875.70 13,440.91 93.35 335.41 8,680.87 8,620.87 8,362.53 -3,266.66 5,961,291.066 709,499.316 4.09 8,905.40 13,470.94 93.59 336.27 8,679.06 8,619.06 8,389.88 -3,278.93 5,961,318.056 709,486.279 2.97 8,934.91 13,502.04 94.37 337.53 8,676.90 8,616.90 8,418.41 -3,291.10 5,961,346.235 709,473.305 4.76 8,965.55 13,530.89 93.78 338.07 8,674.85 8,614.85 8,445.06 -3,301.97 5,961,372.559 709,461.683 2.77 8,994.03 13,561.08 92.55 337.80 8,673.18 8,613.18 8,472.99 -3,313.30 5,961,400.161 709,449.573 4.17 9,023.88 13,580.76 94.71 340.20 8,671.93 8.611.93 8,491.33 -3,320.34 5,961,418.287 709,442.020 16.39 9,043.38 13,611.41 92.92 345.31 8669.89 8,609.89 8,520.52 -3,329.40 5,961447.214 709,432.136 17.63 9,07"-^0 13,645.56 86.72 346.93 8,670.00 8,610.00 8,553.66 -3,337.59 5,961,480.103 709,423.013 18.76 9,1L 13,670.92 88.89 353.09 8,670.97 8,610.97 8,578.60 -3,341.98 5,961,504.911 709,417.917 25.74 9,133.29 13,701.20 88.00 359.73 8,671.80 8,611.80 8,608.80 -3,343.87 5,961,535.036 709,415.168 22.12 9,163.04 13,730.36 87.73 6.66 8,672.88 8,612.88 8,637.87 -3,342.25 5,961,564.146 709,415.967 23.77 9,190.86 13,760.63 88.55 11.85 8,673.84 8,613.84 8,667.72 -3,337.39 5,961,594.120 709,419.985 17.40 9,218.63 13,790.37 89 c3 16.40 8,674.32 8,614.32 8,696.55 -3,330.13 5,961,623.142 709,426.420 15.55 9,244.84 13,820.00 92. C6 22.92 8,673.93 8,613.93 8,724.43 -3,320.17 5,961,651.294 709,435.588 23.66 9,269.47 13,850.98 89.52 27.19 8,673.42 8,613.42 8,752.49 -3,307.05 5,961,679.706 709,447.902 15.56 9,293.50 13,880.87 89.05 31.63 8,673.71 8,613.71 8,778.52 -3,292.38 5,961,706.139 709,461.832 15.08 9,315.19 13,910.80 90.52 36.99 8,673.83 8,613.83 8,803.23 -3,275.52 5,961,731.318 709,477.989 18.57 9,335.07 13,941.72 90.03 42.08 8,673.67 8,613.67 8,827.07 -3,255.84 5,961,755.703 709,496.980 16.53 9,353.42 13,970.51 91.29 38.68 8,673.33 8,613.33 8,848.99 -3,237.19 5,961,778.146 709,514.999 12.56 9,370.16 11/2/2017 8: 31 16AM Page 21 COMPASS 5000.1 Build 81D Y by Final Survey ReportHE GE,.,,, MN` Company: North America -ALASKA -BP Local Coordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 ME, Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A Database: EDM R5K - Alaska PROD - ANCP1 Survey MD Inc Azi(azimuth) TVD TVDSS WS BAN Northing Easting DLeg V. Sec (usft) (°) C) (usft) (usft) (usft) (usft) (usft) (usft) (°/100usft) (usft) 14,000.40 91.32 35.80 8,672.65 8,612.65 8,872.78 -3,219.11 5,961,802.435 709,532.399 9.63 9,388.84 14,030.91 89.97 34.16 8,672.31 8,612.31 8,897.78 -3,201.62 5,961,827.914 709,549.172 6.96 9,4( 14,060.70 92.70 32.49 8,671.61 8,611.61 8,922.66 -3,185.26 5,961,853.247 709,564.821 10.74 9,429.U1 14,090.81 92.36 30.87 8,670.28 8,610.28 8,948.26 -3,169.47 5,961,879.280 709,579.886 5.49 9,450.01 14,120.82 93.04 26.29 8,668.87 8,608.87 8,974.57 -3,155.13 5,961,905.991 709,593.471 15.41 9,472.06 14,150.49 90.83 24.77 8,667.87 8,607.87 9,001.33 -3,142.35 5,961,933.096 709,605.487 9.04 9,494.91 14,180.41 90.52 29.94 8,667.51 8,607.51 9,027.89 -3,128.61 5,961,960.037 709,618.472 17.31 9,517.34 14,210.26 91.20 36.40 8,667.06 8,607.06 9,052.86 -3,112.29 5,961,985.457 709,634.078 21.76 9,537.60 14,240.78 91.81 42.94 8,666.26 8,606.26 9,076.33 3,092.82 5,962,009.469 709,652.871 21.51 9,555.65 14,271.74 89.85 47.34 8,665.81 8,605.81 9,098.16 -3,070.89 5,962,031.910 709,674.180 15.56 9,571.50 14,300.56 90.12 51.60 8,665.82 8,605.82 9,116.89 -3,048.99 5,962,051.246 709,695.540 14.81 9,584.34 14,330.78 93.10 56.43 8,664.97 8,604.97 9,134.63 -3,024.55 5,962.069.672 709,719.460 18.77 9,595.63 14,360.73 92A6 61.20 8,663.52 8,603.52 9,150.11 -2,998.97 5,962,085.874 709,744.594 16.05 9,604.44 14,390.65 93.56 65.54 8,661.95 8,601.95 9,163.50 -2,972.27 5,962,100.014 709,770.906 14.94 9,610.94 14,428.40 95.54 60.26 8,658.95 8,598.95 9,180.54 -2,938.78 5,962,118.088 709,803.893 14.90 9,619.43 14,461.51 94.80 55.64 8,655.96 8,595.96 9,198.13 -2,910.84 5,962,136.365 709,831.326 14.08 9,629.62 14,490.64 93.19 52.19 8,653.93 8,593.93 9,215.24 -2,887.36 5,962,154.135 709,854.310 13.04 9,& 14,520.66 93.93 46.28 8,652.07 8,592.07 9,234.80 -2,864.68 5,962,174.323 709,876.430 19.80 9,653.99 14,550.66 92.55 42.05 8,650.37 8,590.37 9,256.28 -2,843.81 5,962.196.384 709,896.675 14.81 9,669.76 14,580.98 90.:3 38.06 8,649.65 8,589.65 9,279.47 -2,824.31 5,962,220.121 709,915.510 15.30 9,687.53 14,610.85 _ 90.63 36.00 8,649.39 8,589.39 9,303.32 -2,806.33 5,962,244.463 709,932.814 7.23 9,706.29 14,640.77 90.53 33.43 8,649.02 8,589.02 9,327.91 -2,789.29 5,962,269.524 709,949.147 8.63 9,726.01 14,670.64 89.02 33.05 8,649.12 8,589.12 9,352.89 -2,772.92 5,962,294.958 709,964.805 5.38 9,746.27 14,700.70 87.30 36.00 8,650.09 8,590.09 9,377.64 -2,755.89 5,962,320.179 709,981.122 11.36 9,766.14 14,730.90 88.43 41.60 8,651.21 8,591.21 9,401.15 -2,736.99 5,962,344.213 709,999.351 18.90 9,784.36 14,760.95 89.79 48.15 8,651.68 8,591.68 9,422.43 -2,715.80 5,962,366.083 710,019.927 22.26 9,799.86 14,792.63 90.98 54.15 8,651.47 8,591.47 9,442.29 -2,691.14 5,962,386.635 710,044.013 19.31 9,813.14 112/2017 8:33: 16AM Page 22 COMPASS 5000.1 Build 810 0 by BP Final Survey Report BA, �(ER IGHES cEmm m Company: Project: Site: Well: Wellbore: Design: North America -AL,SKA-BP Prudhoe Bay PB DS 04 04-21 04.21A 04-21A Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Database: Well 04-21 Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E True Minimum Curvature EDM R5K-Alaska PROD-ANCP1 Survey MD Inc Azi(azimuth) TVD TVDSS WS EIW Northing Easting DI -eq V. Sec (usft) (1) 19 (use ) (usrt) (usn) (usn) rysnj (usn) (°noousn) (uan) 14,824.96 90.43 58.99 8,651.07 8,591.07 9,460.10 -2,664.17 5,962,405.194 710,070,468 15.07 9,82 1' 14,850.70 90.64 63.07 8,650.83 8,590.83 9,472.56 -2,641.66 5,962,418.290 710,092.619 15.87 9,830.49 14,881.14 90.23 66.34 8,650.59 8,590.59 9,485.56 -2,614.14 5,962,432.067 710,119.755 10.81 9,836.43 14,912.84 88.62 68.35 8,650.89 8,590.89 9,497.77 -2,584.89 5,962,445.099 710,148.646 8.22 9,841,17 14,940.44 84.34 66.79 8,652.46 8,592.46 9,508.28 -2,559.42 5,962,456,326 710,173.803 14.81 9,845.18 14,970.63 83.35 62.84 8,655.57 8,595.57 9,521.06 -2,532.26 5,962,469.864 710,200.598 13.92 9,850.98 15,000.69 86.07 59.58 8,658.34 8,598.34 9,535.47 -2,506.03 5,962,485.013 710,226.404 14.09 9,858.60 15,030.48 89.69 56.45 8,659.44 8,599.44 9,551.24 -2,480.79 5,962,501.486 710,251.189 16.06 9,867.76 15,060.42 92.98 52.77 8,658.75 8,598.75 9,568.57 -2,456.39 5,962,519.497 710,275.081 16.48 9,878.65 15,090.84 92.92_ 50.72 8,657.18 8,597.18 9,587.37 -2,432.54 5,962,538.973 710,298.393 6.73 9,891.11 15,120.90 92.=3 46.79 8,655.78 8,595.78 9,607.17 -2,409.97 5,962,559.395 710,320.395 13.16 9,904.83 15,145.84 91.23 43.94 8,654.98 8,594.98 9,624.68 -2,392.23 5,962.577.401 710,337,627 12.39 9,917.51 15,170.70 92.30 41.24 8,654.20 8,594.20 9,642.97 -2,375.42 5,962,596.160 710,353.916 11.77 9,931.17 15,202.00 9236 41.24 8,652.91 8,592.91 9,666.49 -2,354.80 5,962620.249 710,373.857 0.00 9,948.98 Projection to TD -4112" 15,202.00 6,652.91 4 1/2" - - -- 2.675 - _4.500 11/2/2017 8: 33.16AM Page 23 COMPASS 5000 1 Build 81D BP BAKER by Final Survey Report gUGHES Company: North America -ALASKA -BP Local Coordinate Reference: Well 04-21 Depth Depth TVD Reference: Kelly Bushing I Rotary Table @ 60.00usft (NABORS 4E Project: Prudhoe Bay MD Reference: Kelly Bushing I Rotary Table @ 60.00usft (NABORS 4E Site: PB DS 04 12,675.00 8.465.26 Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature 12,715.71 -8093.45 Database: EDM R5K - Alaska PROD - ANCP1 Design: 04-21A 8,511.59 7,956.64 Design Annotations Measured Vertical Local Coordinates Depth Depth +NI -S +PJ -W (usft) (usft) (usft) (usft) Comment 12,675.00 8.465.26 7,911.91 -2,800.44 TIP to 04-21 12,691.00 8476.19 7,923.26 -2,803.19 KOP-Top of WS 12,715.71 -8093.45 7,940.44 -2,807.36 Interpolated Azimuth 12,740.36 8,511.59 7,956.64 -2,811.34 Interpolated Azimuth 12,770.16 8.533.83 7,975.60 -2,817.15 Interpolated Azimuth 12,800.22 8,555.52 7,994.77 -2,825.21 Interpolated Azimuth 12,830.25 8576.25 8,013.92 -2,835.45 Interpolated Azimuth 15,202.00 8,652.91 9,666.49 -2,354.80 Projection to TO I Prepared By: Yosha Ragbirsingh Survey Manager Baker Hughes A GE Company 1122017 8:33:16AM Page 24 COMPASS 5000.1 Build 81D Regg, James B (DOA) 4 -7 f( Z0 From: Cadenhead, Ryan <Ryan.Cadenhead@bp.com> Sent: Monday, November 6, 2017 2:09 PM 11 To: DOA AOGCC Prudhoe Bay Cc: AK, GWO Rig CDR2 Well Site Leader; Warren, Abigail M; Burnett, Richard D; Daniel, Ryan Subject: CDR2 BOPE Usage Form 11-6-17 Attachments: CDR2 04-21A BOPE Usage Form 11-6-17.doc Hello, Please see attached BOPE Usage Form for CDR2 and let us know if you have any questions. Thanks, Ryan Cadenhead Well Site Leader 907-659-4618 Harmony 2156 AOGCC BOPE USAGE REPORT FORM (Well Control event only) Field Superintendent Name: Ryan Cadenhead Wellsite Leader Name: I Paul Haynes Contact Number: 303-717-0937 Contact Number: 907-685-4886 BP IRIS Number: TBD Rig Name & Well Pad or Drill Site & Well Name: CDR2-4C, DSO4-21A Coiled Tubing Sidetrack Permit To Drill (PTD) Number: 217-117 Date and Time of Incident: 14:00 on 11/5/17 Original Scope of Work: Perforate well, POOH and laydown perforating guns Operational Description Leading up to Well Control Event: Pulling out of the hole with (15) joints of 2-3/8" CS Hydril handling pipe above the perforating guns. Perf guns were 210' below surface BOPE Used and Reason: CO gas bubble (residual gas from perfguns firing) migrated to surface and led to an temporary flow from the well. Upper 2-3/8" pipe rams/slips were shut on the safety joint to divert flow down the open choke line to the possum belly for extended flowcheck Current BOPE test time/date 09:30 on 25 October 2017 Is a BOPE re -test required after use: Yes/No and reason No — Upper pipe rams were only used to divert flow, rather than to"prevent flowof fluids from the wellbore." BOPE Retest time/date and result (WSL to complete as applicable) N/A Plan Forward: Laydown perforating guns, Freeze protect well, end of well operations. Move rig to R-28. Additional Comments: None ACTIONS REQUIRED: 1) Well Site Leader: Timely email notification of BOPE re -test time estimate to AOGCC North Slope Inspectors is required following any WC incident to allow the State to witness re -test as required. (This is a judgment call given WC is on unplanned event during rig operations and factors such as wellbore condition and trip timing will influence timing of any retest) 2) Superintendents: Email the completed BOPE Usage Report form to AOGCC North Slope Inspectors within 24 hours of a WC incident: doa.aogcc.Prudhoe.bav@alaska.gov 3) Well Site Leader: Complete AOGCC BOPE Test report form 10-424 and send to three AOGCC addresses (noted in form) within 5 days following the test/retest. This is applicable to Well Control events Only. STATE OF ALASKA ^LASKA OIL AND GAS CONSERVATION COMMIS$. APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.260 1. Type of Request: Abandon ❑ Plug Perforations ❑ Fracture Stimulate ❑ Repair Well ❑ Operations shutdown ❑ Suspend ❑ Perforate p • Other Stimulate ❑ Pull Tubing ❑ Change Approved Program ❑ Plug for Redrill ❑ Perforate New Pool ❑ Re-enter Susp Well ❑ Alter Casing ❑ Other Klondike W WP m 2. Operator Name: BP Exploration (Alaska) Inc. 4. Current Well Class: Exploratory ❑ Development p. 5. Permit to Drill Number: 217.117 ' 3. Address: P.O. Box 196612 Anchorage, AK 99519-6612 Stratigraphic ❑ Service ❑ . ' 6API Number: 50-029-21435-01-00 7. If perforating: What Regulation or Conservation Order governs well spacing in this pool? 8. Well Name and Number: Will planned perforations require a spacing exception? Yes ❑ No 0 PBU 04-21A • E C E I V E 9. Property Designation(Lease Number): 10. Field/Pools: SEP 19 2017 ADL 028324, 028325 & 028322 PRUDHOE BAY. PRUDHOE OIL. 11. PRESENT WELL CONDITION SUMMARY Total Depth MD (ft): Total Depth WD(ft). Effective Depth MO: Effective Depth TVD MPSP (,xi Plugs (MD): J n -15136'-8536'ss -15100'-8546'ss 2477 None None I Casing Length Size MD TVsBurst Collapse Structural Conductor 80 20" 39-119 119 1490 470 Surface 2350 13-3/8" 39-2389 39 - 3 3450/4930 1950/2670 Intermediate 12533 9-5/8" 36-12569 3 68704760 Liner 435 7" 12244 - 12 W-8481 8160 7020 Liner -2916 3 -12"x3 -1/4"x2-7/8" -12220--151 8 s--8536'ss Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Vubing Grade: Tubing MD (ft): No 4-1/2 12.6 --1 " 17 13Cr80 / L-80 34-12280 Packers and SSSV Type: 4-1/2" Baker S-3 Perm Packera $SSV MD Ill) and TVD (8): 12144/8116 5.1/2- BOT Packer 12173/8134 12. Attachments: Proposal Summary ® WellboreSchem ® ell Class after proposed work: Detailed Operations Program ❑ BO Eff Exploratory ❑ Stratigraphic ❑ Development M Service ❑ 14. Estimated Date for Commencing Operations: Novemb 017 15. Well Status after proposed work: Oil m WINJ ❑ WDSPL ❑ Suspended ❑ 16. Verbal Approval: Dale:7GAS ❑ WAG ClGSTOR 13SPLUG [3Commission Representative: GINJ ❑ Op Shutdown ❑ Abandoned ❑ 17. 1 hereby certify that the foregoing is true and the pro dure approved herein will not Contact Name: Thompson, Ryan be deviated from without prior written approval. Contact Email: RYAN.THOMPSON@bp.cem Authorized Name: Thompson, Ryan Contact Phone: a1 907 564 4535 Authorized Title: Interventions Engineer Authorized Signature: /y. Date: / COMMISSION USE ONLY Conditions of approval: Notify Commission o that a representative may witness Sundry Number: Plug Integrity ❑ BOP est ❑ Mechanical Integrity Test ❑ Location Clearance ❑ Other: Post Initial Injection MIT Req'd? Yes ❑ No ❑ Spacing Exception Required? Yes ❑ No ❑ Subsequent Form Required: APPROVED BYTHE Approved by: COMMISSIONER COMMISSION Date: L ORIGINAL Form 10-403 Revised 042017 Approved application is valid for 12 months from the date of approval. RB®MS � L- DEC 1 12017 Submit Form and Attachments in Duplicate Sundry Request for Extended Length Perforating utilizing the Well Work Platform Well: 04-21 Date: 9/18/2017 Engineers. Kirsten Schultz 907-564-5105 Ryan Thompson: 907-564-4535 MASP: 2477 psi Well Type: Producer Estimated Start date: November 2017 History: 04-21 was originally drilled in October 1985 and worked over with a tubing swap in September of 2003. The well is planned for a CTD sidetrack in November 2017. Scope of Work: The objective of this intervention is to utilize Service Coil and the Well Work Platform to add 1000' of perforations post rig after CTD drills, completes, and cements the well. Proposed WWP Procedure: • MIRU WWP, BOPE and support equipment • MIRU CTU • Test BOPE with four preventers configured top down (annular, blind shears, 1.75" pipe/slips, mud cross, 2-3/8" x 3-1/2" VBR's, 1.75" pipe/slips). Test the blind shears, VBR's, and pipe slips to 3500 psi and the annular to 2500 psi. • Drift and tie in run with GR/CCL • Perforate -1000ft in new completion • RDMO CTU and WWP Planned Wellbore Configuration after Sidetrack and Completion T1iff - VYBJJfA0 PROPOSED04 _21 A tsAFETYMDTe�: wu.LANca.r=>7n• e- 1Fai aEv- w ••• CHIR0ME MG& LMR -MAX OLS:_•Q`• BF. -HPI- _ W .13.37CW- IOP• 1900' OOs. %-SE, / Jr mm x W. D-s.elr mu @'—' —• omm,.• _. _ _ D• 12.tl5' GASLFTWIpBS �mwo' aw DLV TYPE VLV LATCH PORE DATE 727nT 13.2W CS6, 7N. LlW D -1231r 42e3' - M MMD OIM WC 0 001W 57 1/LT DO Fe( /6 OSRL77 5E NG 9D 10( 20 03Ii2117 Mhlmum IU . @ E2 II/0 OW Pot 0 OW101O3 _' _____' l 50 MMS DM We 0 OW10AT3 1290Y a-t?N�xer.D-aAu• 1492•• LSAT x 1-t? eMR S -a W0t D- aaTs' _ .. Tq/IOC 12160' 12160] JO•D9L0t %V -3.00• ---- 12160' 1-1?NesX W, D-?e/r OSIMOCT LMw .-1?Tea u.e/n1e11s/..E1s2 b/L D•anr tr7c• iztao• lurl�xMV D•aalr lsne u+aAeMAaaewaawr 14114' S•t?BOTfBRASSY 14114' 4•eA'%Sl?ear 1N/lw voew CT LIR S-7?110.PC, R/.L-90..07320pd.D•.�2' 141E,1' iDPOF MI?T16PC 12117' 14113' "Arx41?XD. D•31HC 11R•LWSM.1]p-0SSR,.Op IFW.D.2i 12220• ti44E' 11?xl�lf6'xD.D-).ele• ITwoFrLmH 14214• 1247r 41?DIB %N lF, D-].12a•aB1ND CT LMR 14218 N?eOTS6W01/T SLB 4.1?186PD-I2.OS, 40D, AIa20/f,D•atss 1248/ 142w' 4t?111aN6 TAL Fa amore. 4". 4000/C D.e.wr 1217r 1231i' BMOTT LO00®ONI UEE .-1?xrtles vx/1TTooL LIJ_} 12ow OTD, -12OW .00711q/. D-e.IM• 1]Ife•LNi, 0.2/, 1]CR/6lq .00JE bpi.D-2.00• 12070' 72070• YYSB•%2•JI£xO, D•2.]Tr fHV0W1TIONSIAAMRY FU LOG ON I I ANCXEATI0PRT3_'Q_' Nob: Iblw to Rah fm OeforllYll/ICSI dW SQE SPF MERVAL —1E 191D 2-7A•LW8 1a 114S, 0050 W. D - 2." 1-H 11131• iFRMK EBAY INT HBL 0421A POM _ ARFb 56®•2NOS-01 SFC25, T11R RISE 1117• TSL S 204 FV& 8P BWbratlan (AbkR �mO llll�m PS,SiIS1�10: , ••r•1ov --- BOP rig up Hydraulically Actuated Yalye Choke Line no U Platform Floor Riser to platform floor Annular BlindlShcar Coil PipelSlip 120-1\_ Av 1.41'k. 1 TjWAv I Variable Bore Ram Coil Pipeeslip 7 x 7 Spool as needed Swab Valve Flow Cross SSV Kill Line Master Valve THA Tubinq Head — Ground Level Loepp, Victoria T (DOA) From: Lastufka, Joseph N <Joseph.Lastufka @bp.com> Sent: Monday, November 20, 2017 2:03 PM_- To: Loepp, Victoria T (DOA) Cc: Thompson, Ryan Subject: Withdraw sundry requests f,04 -21A (PTD #217-117) al�d R -28A (PTD 1217-019) Follow Up Flag: Follow up Flag Status: Flagged Victoria, Please withdraw / cancel sundry request for 04-21A (PTD #217-117) and R -28A (PTD #217-019). These were submitter as post drilling perforations by our Klondike wellwork platform. Both wells had perforations shot with the rig, so these are no longer necessary. Please let me know if you have any questions. Thank you, Joe Lastufka Information and Data Controller Cell: (907) 227-84961 Office: (907) 564-4091 wo BP Exploration Alaska1900 E. Benson Blvd.(Room: 788DIAnchorage, AK THE STATE 01ALASK-A GOVERNOR BILL WALKER Uchenna Egbejimba Engineering Team Leader BP Exploration (Alaska), Inc. PO Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU 04-21A BP Exploration (Alaska), Inc. Permit to Drill Number: 217-117 Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, Alaska 99501-3572 Main: 907.279.1433 Fax: 907.276.7542 www.aogcc.oloska.gov Surface Location: 1147' FSL, 205' FWL, SEC. 26, TI IN, R15E, UM Bottomhole Location: 199' FSL, 2187' FEL, SEC. 15, TI IN, R15E, UM Dear Mr. Egbejimba: 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, EU�5� Hollis S. French �L Chair J DATED this' `{ day of September, 2017. STATE OF ALASKA - kSKA OIL AND GAS CONSERVATION COMMISS PERMIT TO DRILL 20 AAC 25.005 nwGI V L..III AUG 0 7 2017 la. Type of Work: 1b. Proposed Well Class: Exploratory - Gas ❑ Service - WAG ❑ Service - Disp❑ ic. Specify if well is proposed for: Drill ❑ Lateral ❑ Stratigraphic Test ❑ Development - Oil m • Service - Winj ❑ Single Zone 51 Coalbed Gas ❑ Gas Hydrates ❑ Redrill [Z Reentry ❑ Exploratory - Oil ❑ Development - Gas ❑ Service -Supply ❑ Multiple Zone Geothermal ❑ Shale Gas ❑ 2. Operator Name: 5. Bond Blanket ® - Single Well ❑ 11. Well Name and Number: BP Exploration (Alaska), Inc Bond No. 295105360 , PBU 04-21A ' 3. Address: 6. Proposed Depth: 12. Field/Pool(s): P.O. Box 196612 Anchorage. AK 99519-6612 MD: 15136' TVD: 8536'ss - PRUDHOE BAY, PRUDHOE OIL ' 4a. Location of Well (Governmental Section): 7. Property Designation (Lease Number): " ADL 028324:028325'& 028322 Surface: 114T FSL, 205' FWL, Sec. 26. T1 1N, R15E, UM 8. DNR Approval Number. 13. Approximate spud date: Top of Productive Horizon: 3776' FSL, 2581' FEL, Sec. 22, T11 N. R15E, UM 70-039 November 1, 2017 9. Acres in Property: 2560 14. Distance t0 Nearest Property: Total Depth: 199' FSL, 218T FEL, Sea 15, T11N, R15E, UM 55425 4b. Location of Well (State Base Plane Coordinates - NAD 27): 10. KB Elevation above MSL: 60 • feet 15. Distance to Nearest Well Open Surface: x- 713001 ' y- 5953025 Zone - ASP 4 GL Elevation above MSL: 19.7 •feet to Same Pod: 1100 16. Deviated wells: Kickoff Depth: 12700 feet 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Maximum Hole Angle: 105 degrees Downhole: 3342 • Surface: 2477 18. Casing Program: S ecifications Top - Setting Depth - Bottom Cement Quantity, c.f. or sacks Hole Casing Wei ht Grade Counlin. Len th MD ND Min TVD fincludina sta edata 4-1/4" 3-1/2"x3-1/4" 92#16.2# 13Cr85 STL r 2916' 12220' 8104'ss 15136' 8536'ss 198 sx Class'G' X2-718" /6.4# 19, PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re -Entry Operations) Total Depth MD (ft): Total Depth TVD (ft): Plugs (measured). Effect. Depth MD (ft): Effect. Depth TVD (it): Junk (measured): 13138 8779 None 13088 8745 11291 Casing Length Size Cement Volume MD TVD Conductor/Structural 80 20" 1825# Polyurethane 39-119 39-119 Surface 2350 13-3/6" 3000 sx CS 111, 400 sx CS It 39-2389 39-2357 Intermediate 12533 9-5/8" 750 sx Class'G', 300 sx CS 1 36-12569 36-8393 Production Liner 889 7" 350 sx Class'G' 12244 -13133 8179-8775 Perforation Depth MD (ft): 12980 -13018 TPerforation Depth TVD (ft): 8672-8698 Hydraulic Fracture planned? Yes ❑ No 20. Attachments Property Plat ❑ BOP Sketch 10 Drilling Program ® Time v. Depth Plot ❑ Shallow Hazard Analysis ❑ Diverter Sketch ❑ Seabed Report ❑ Drilling Fluid Program 0 20 AAC 25.050 requirements 21. Verbal Approval: Commission Representative: Date 22. 1 hereby certify that the foregoing is true and the procedure approved herein will not be deviated Contact Name Leemhuis, Jacob from wrthout prior written approval. Authorized Name Egbeiimba, Uchenna J Contact Email Jacob.Leemhuist7o-bp.com Authorized rifle Engineering Team Leader - CTD & Contact Phone +1 907 564 4989 Authorized Signature '' Data ^� Commission Use Only If Permit to Drill/ API: 50- 029-21435-01-00 Permit Approval See cover letter for other Number: t Date: requirements: Conditions of approval : If box is checked, well may not be used to explore for, test, or produce coalbedmJet¢ane, gas hydrates, or gas contained in shales d: Yes Other: Samples req' ❑ No LM Mud log req'd: Yes ❑ No CY /j�/� �r5f 35ZrJ�s�S / �h � v (Q � � ✓C �,` N �� �' H2S measures Yes fd No ❑/ Directlonal svy req'd: Yes 19/ No —❑ ySpacing exception req'd: Yes ❑ No CM Inclination -only svy req'd: Yes 13 No SI !! / Post initial injection MIT req'd: Yes ❑ No APPROVED BY I -I Appmved by: COMMISSIONER THE COMMISSION Date: — [� t I t` -(I �a 1/n q -/JZ/! :;� Foo -I� IN NN7 A LThis permit is valid for 24 months horn the date of approval (20 AAC 25.01 '_� �.#t'.r7 Submit Form and Altain /`/oticala `T/ 77 To: Alaska Oil & Gas Conservation Commission From: Jacob Leemhuis CTD Engineer Date: August 07, 2017 Re: 4-21A Permit to Drill Request Approval is requested for a permit to drill a CTD sidetrack from well 4-21A by the Nabors CDR2 Drilling rig on or around November 1, 2017. The 4-21A sidetrack will be a single string exit from the existing 4- 1/2" liner. A 4-1/2" x 7" delta whipstock will be set at 12,698' MD. 4-21A will kickoff from 4-1/2" liner drilling a horizontal well through Zone IA, toeing up into Zone 2B. The well will be completed with 3- 1/2" x 3-1/4" x 2-7/8" 13Cr-85 production liner, cemented and perforated post rig. Rig Work (scheduled to begin November 1, 2017) 1. MIRU and test BOPE 250 psi low and 3500 psi high (MASP 2,477 psi). 2. Mill 3.80" window and 10' of rathole. 3. Drill Build: 4.25" OH, -684' 19 deg DLS planned). 4. Drill Lateral: 4.25" OH, 1752'(12 deg DLS planned). 5. Run 3-1/2" x 3-1/4" x 2-7/8" 13Cr-85 liner leaving TOL at -12,135' MD. 6. Pump primarycement'ob: 41.0 bbls, 15.3 ppg Class G, TOC at -12,135' MD. 7. Freeze protect well to a min 2,000' TVDss. 8. Close in tree, RDMO. *Approved alternative plug placement per 20 AAC 25.112 (i) Post -Rig Work 1. V Tree work as necessary 2. S Set LTP (if necessary) 3. F Liner lap test (positive pressure test) 4. C RPM log, perforate 5. T Pop and Test *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 436 psi over -balance) Disposal: • All Class 1& II non -hazardous and RCRA-exempt drilling and completion fluids will go to GNI at DS 4orPad 3atD56. • 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 12,700' MD to 15,136' MD Liner Program: • 2-7/8" 6.4# 13Cr-85, STL Solid from 12,970' MD to -15,136 MD • 3-1/4" 6.2# 13Cr-85, STL Solid from 12,970' MD to 12,220 MD • 3-1/2" 9.2# 13Cr-85, STL Solid from 12,220' MD to 12,135 MD • 41.0 bbis of 15.3 ppg cement will be used to cement the liner in place. (TOC at 12,135' MD) • The primary barrier for this operation: minimum EMW of 8.4 ppg (provides 436 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 3500 psi high. • The annular preventer will be tested to 250 psi low and 3500 psi high. Directional: • See attached directional plan. Maximum planned hole angle is 105°. • Magnetic and inclination surveys will betaken every 30 ft. No gyro will be run. • Distance to nearest property line: 55,425' • Distance to nearest well within pool: 1,100' TVD Logging: • MWD directional, gamma ray, and resistivity will only be run in lateral section. Perforating: • Perforating will be completed post rig. Anti -Collision Failures: • 4-21A passes BP Anti -Collision criteria. Hazards: • DS -4 is considered a HZS pad • Most recent HZS level on DS -4 was at 04-22A with 150 ppm recorded on 2/22/2017 • Lost circulation potential in 4-21A is medium. . Reservoir Pressure: • The reservoir pressure on 4-21A is expected to be 3342 psi at 8650' TVDss. (7.43 ppg EMW) • Maximum expected surface pressure with a full column of gas (0.10 psi/ft) to surface is 2477 psi. • An EMW of 8.4 ppg will provide a 436 psi overbalance to the reservoir. Managed Pressure Drilling: • MPD techniques may be used to improve hole stability. • An automatic choke will maintain a target ECD at the window for the duration of drilling to improve hole stability. • A pressure schedule will be used for tripping In/Out of the hole. The purpose of the pressure schedule for tripping is to maintain the same bottom hole pressure at the window by applying surface pressure via the choke. • At all times, drilling fluid weight will be greater than equivalent pore pressure. MPD is only being used for hole stability. Jacob Leemhuis CC: Well File CTD Engineer Joe Lastufka Jacob.Leemhuis@bp.com 907-564-4989 TREE = FRC G WELLHEAD= FMC ACTUATOR= AXE -SON KB. E.EV = 60' BF. E -EV = 5 KOP= 1900' Max Angle = 62° Q 7700' Datum M)= 13259' Datum TVD = 8804 SS lSOla- ISG, 56#, K -S5, D = 12.415- �� 49 13-318• CSG, 72#, L-80, D = 12.347'239 Minimum ID = 3.725' @ 12277' 44/2" OTIS XN NIPPLE 4-12• TBG. 12.6#. 13CR-60_ _0152 bof. D= 3 9501• —F V .0232 bpf, D = 4.892' 12193' rOP OF 4-12" TBGPC12193' TOP OF 7' LNR 4-12- TBG -PC, 12.6#, L-80, .0152 bpf, D = 3.958' I PERFORATION SUMMARY REF LOG: BHCS ON 10122/85 ANGLE AT TOP PEW : 47° Q 12980' Note: Refer to Production DB for historical pert data SIZESPF P7113RVAL Opn/Sgz DATE 3" 1 5 1 12980 - 13018 1 O 1 06/11/86 7- LNI7, 29#, L-80 BTC, .0371 bpf, D = 6.184' I IIIIIII[I-i 04-21 SAFETY NOTES: 412" CHROME TBG 2•FES X NP, D=3.813' GAS LFT MANDRBS ST MD TVD DEV TYP= VLV LATCH PORT DATE 5 3157 3008 44 WAG oMYRK JPGJRD GLV C/O (03/2207) 0 02/10117 4 4236 3637 57 MIM DOL44 RK 16 0322/17 3 6911 5194 56 MMG SO RK 20 0322117 2 7737 5617 62 MM. DWRK 0 09/10103 1 8847 6207 59 MdG DMY RK 0 00110103 12178' 12164' 12182 HESX NP, D=3.813. 1 x 4-12' BKR S-3 PKR, D = HIES X NP, D = 3.813' 15-12' X 4-12' XO, D = 3.958' 1 12277' —14-1/2' OTIS XN NP, D = 3.725- 122W 4-12' BOT SFEAROUr 5116 12289' 4-12'Tt1BtNG TAL 12346' ELM3TT LOGGED 06111186 12780' LNH2 FIOLE 8 GAS JET (02/03/11) DATE REV BY COMMENTS DATE REV BY COM ENIM 1027185 ORIGINAL COMPLETION 02/13/17 GJB/JMJ GLV GO (02/10/17) 09111/03 JDMM RINO 04/03/17 JPGJRD GLV C/O (03/2207) 09/30/03 JGMTLH PULL PXN PLUG 08106/10 CWSV GLV UPDATE 02112/11 OOBPJC LNR HOLE B GAS JET (02103/11) 03/11/16 JM) WBS CLEAN LIP -131331J� FISH - 3' CUI TER B BAR (SLM) 8 BTM SUB OF GS 11'2.5* Pi1DHOE BAY LUT WELL. 0421 PEFW No: 1852120 API No: 50-029-21435-00 T11 N, R15E,114T FSL 8 205' FWL BP Exploration (Alaska) WELLHEAD= FMC ACTUATOR= DEV KB. R __--- t;F. PrP/ _ FlDRf KOP= 1900 Max Angle = - —" Q —' Datum M3= -- DstumTVD= flow SS PROPObEP 13-3/8' CSG, 49' 68#, K-55, D =12.415' 13.3/8' CSG, 72#, L-80, D = 12347' 2393 Minimum ID = @ 12136' 1 4-12" TBG, 12.6#, 13CR-80, .0152 bpf, D = 3.958' I 5-12' TBGPC, 17#, L-80, .0232 bpf, D = 4.892' 12193' TOPOF4-12'TBGPC 12193' 3-12' LNR, 9.2#, 130r-85 STL, .0087 bpf, D = 2.99 " 12220' TOP OF 7- LNR 12244' 12.60, L-80,.0152 bpf, D = 3.958' 8' CSG, 47#, L-80 BTC. D = 8.681' LNR 290, L-80 BTC. 171 bpf. D = 6.184' Nr{ ti.2#, 131;wub ILA .00/6 bpt, D = 280- 1--1 PERFORATION SUMIMRY REF LOG: ON ANGLE AT TOP PEW "@ Note: Refer to Production DB for historical pert data 04-2 SAFETY NOTES: WELL ANGLE > 70• @ ••' CHROME TBG& LNR ***MAX TAS:_° @ 2127' 4-1/2' HES X NIP. D = 3.813" TFFF GAS LFT MANDRELS ST MD TVD DEV TYPE VLV LATCH FlDRf DOTE 5 3157 3008 44 DMY RK 0 02110117 4 4236 3637 57 RK 16 0322/173 6911 5194 56 UiLMOOK SO RK 20 0321/17 2 7737 5617 62 MY RK 0 09/10103 1 8847 6207 59 MY RK 0 09/101011 1 12129' 1 1 12193' 1 70" DEPLOY SLV, D= 3.00" LNR I ru< norrr,u=<.ois I tMDUEMACHI EOVERSHOT 5-1/2' BOT PBRASSY 9-5W X 5-12' BOT 3-H PKR BEHIND CT LNR 14-12' OTIS XN NP, ID= 3.725' BBiND CT LNR 11 12346' ELMD TT LOGGED 06/11/86 DATE REV BY OOM MITS DATE RE/ BY COMfAENTS 10127/85 ORGINALCOMPLETTON 09/11103 JO#IKK RNO I_ CTD I04 -21A) 05/31/17 JMD B1A.T PROPOSED P RUDHOE BAY lNT WILL. 04-21A FEFdAT No: AR No: 50-029-21435-01 SEC 26, T11 N, R1 5E 1147' FSL 8 205' FWL BP Exploration )Alaska) bp North America - ALASKA - BP Prudhoe Bay PB DS 04 04-21 04-21A Plan: 04-21A WP06 CTD PLANNING REPORT 02 August, 2017 BA SER HUGHES a GE company 1r—, BP Magnetics b > 1 y CTD PLANNING REPORT BA E ES Design 04-21A WPO6 aGEe mpany Company: North America -ALASKA- BP Local Co-ordinate Reference: Well 0421 Project: Prudhoe Bay TVD Reference: Mean Sea Level Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 0421 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 0421A WPO6 Database: EDM R5K-Alaska PROD -ANCP1 Project Prudhoe Bay, PBU, PRUDHOE Map System: Alaska NAD27 State Plane Zones System Datum: Mean Sea Level Geo Datum: NAD27. OGP-Usa AK [4267.15864] Using Well Reference Point Map Zone: NAD27 • OGP-Usa AK / Alaska zone 4 [26734.1586, • Using geodetic scale factor Site PB DS 04, TRA 1-15 Site Position: From: Map Position Uncertainty: 0.00 usft Well 0421, 0421 Well Position +N/ -S 0.00 usft +E/ -W 0.00 usft Position Uncertainty 0.00 usft - Wellbore 04-21A Magnetics Model Name Sample Date BGGM2016 1/10/2017 Design 04-21A WPO6 Audit Notes: Version: Phase: Vertical Section: Depth From (TVD) (usft) 24 32 Northing: 5,953,265.350 usft Easting: 711,234.970 usft Slot Radius: 0.000 in Latitude: Longitude: Grid Convergence: Northing: 5,953,024.760 usft Easting: 713,001.220 usft Wellhead Elevation: 24.32 usft Declination Dip Angle Field Strength 1°I 1°I (nT) 18.20 81.03 57,556 PLAN +N/ -S (usft) 000 Tie On Depth: +EI -W (usft) 0.00 1260000 Direction (°I 345.95 70° 16'31.598 N 148° 17'27.907 W 1.61 ° Latitude: 70° 16'28,743 N Longitude: 148' 16'36.693 W Ground Level: 19.70usft 8./2/2017 11:42:39AM Page 2 COMPASS 5000.1 Build 810 P Well 04-21 100""? Mean Sea Level Company: North America - ALASKA - BP Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Project: Prudhoe Bay True Site: PB DS 04 Minimum Curvature Well: 04-21 EDM R5K - Alaska PROD - ANCP1 Wellbore: 04-21A (°) Design: 04-21A WPOB -2,787.86 Survey Tool Program Date 8/2/2017 709,992.163 From To 8,300.26 (usft) (usft) Survey (Wellbore) 7,876.41 100.00 12,600.00 Gyro MS (04-21) 5,960,818.599 12,600.00 15,135.06 04-21A WPO6(04-21A) 1.89 Planned Survey -136.03 MD Inc Azi TVDSS (usft) (°) (true noM_azim (usft) 12,600.00 47.28 347.29 8,354.07 04-21 Actual Survey - 04-21A Fault2 - 04-21A Polyfon - 04-21A Faultl 12,625.00 46.94 346.84 8,371.08 04-21 Actual Survey 0.35 12,650.00 46.86 346.52 8,388.16 04-21 Actual Survey -2,804.75 12,675.00 46.87 346.40 8,405.26 04-21 Actual Survey - TIP 8,373.33 12,700.00 . 47.01 346.33 8,422.33 KOP-31116" Planned TOW 5,960,885.366 12,720.00 45.21 346.33 8,436.19 Start DLS 19.00 TFO -180.00 180.00 12,750.00 39.51 346.33 8,458.35 Start DLS 19.00 TFO -70.00 709,964.145 12,800.00 43.53 333,32 8,495.85 12,900.00 54.96 313.12 8,561.41 13,000.00 68.85 298.36 8,608.59 13,100.00 83.79 286.24 8,632.25 13,119.02 86.69 284.06 8,633.63 04.21A T1 -2,870.21 13,134.22 89.00 282.33 8,634.40 Start Turn 19.00 8,509.36 13,200A0 89.00 294.83 8,635.55 BP CTD PLANNING REPORT BAKER 4UGHES E ,pa, Local Co-ordinate Reference: Well 04-21 TVD Reference: Mean Sea Level MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E North Reference: True Survey Calculation Method: Minimum Curvature Database: EDM R5K - Alaska PROD - ANCP1 Tool Name Description GYD-CT-CMS Gyrodata contcasing m/s MWD MWD -Standard NIS E/W Northing Easting DLeg V. Sec TFace (usft) (usft) (usft) (usft) (°1100usft) (usft) (°) 7,858.55 -2,787.86 5,960,800.871 709,992.163 0.00 8,300.26 0.00 7,876.41 -2,791.96 5,960,818.599 709,987.560 1.89 8,318.57 -136.03 7,894.17 -2,796.17 5,960,836.235 709,982.853 0.99 8,336.82 -109.01 7,911.91 -2,800.44 5,960,853.842 709,978.082 0.35 8,355.07 -83.53 7,929.66 -2,804.75 5,960,871.464 709,973.275 0.60 8,373.33 -20.09 7,943.66 -2,808.15 5,960,885.366 709,969.474 9.00 8,387.74 180.00 7,963.29 -2,812.93 5,960,904.855 709,964.145 19.00 8,407.95 180.00 7,994.20 -2,824.45 5,960,935.425 709,951.758 19.00 8,440.73 -70.00 8,053.50 -2,870.21 5,960,993.399 709,904.337 19.00 8,509.36 -60.23 8,104.10 -2,941.78 5,961,041.945 709,831.364 19.00 8,575.82 -46.90 8,140.48 -3,031.37 5,961,075.773 709,740.791 19.00 8,632.86 -39.87 8,145.43 -3,049.66 5,961,080.204 709,722.369 19.00 8,642.10 -36.97 8,148.89 -3,064.45 5,961,083.252 709,707.487 19.00 8,649.06 -36.79 8,169.81 -3,126.66 5,961,102.397 709,644.706 19.00 8,68445 90.11 822017 11:42:39AM Page 3 COMPASS 5000.1 Build 81D e040 BP bp CTD PLANNING REPORT BA <ER a F�UGHES Company: North America -ALASKA - BP Local Co-ordinate Reference: Well 04-21 Project Prudhoe Bay TVD Reference: Mean Sea Level She: PB DS 04 MD Reference: Kelly Bushing / Rotary Table 0 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A WPO6 Database: EDM R5K - Alaska PROD - ANCPI Planned Survey MD Inc Azi TVDSS NIS ENV Northing Easting DLeg V. Sec TFace (usft) (°) (true north azim (usft) (usft) (usft( (usft) (usft) (°I100usf) (usft) (°) 13,300.00 89.00 313.83 8,637.30 8,225.94 -3,208.85 5,961,156.175 709,560.964 1900. 8,758.85 90.17 13,384.22 89.00 329.83 8,638.77 8,291.93 -3,260.72 5,961,220.665 709,507.249 1900. 8,835.46 90.14 Start DLS 12.00 TFO 84.00 13,400.00 89.20 331.72 8,639.02 8,305.70 -3,268.43 5,961,234.209 709,499.160 12.00 8,850.68 84.00 13,490.06 90.34 342.46 8,639.38 8,388.53 -3,303.44 5,961,316.015 709,461.822 12.00 8,939.54 83.97 04-21A T2 13,500.00 90.47 343.65 8,639.31 8,398.04 -3,306.33 5,961,325.435 709,458.658 12.00 8,949.46 83.93 13,600.00 91.72 355.59 8,637.40 8,496.20 .3,324.32 5,961,423.046 709,437.899 12.00 9,049.06 83.94 13,624.22 92.01 358.48 8,636.61 8,520.37 -3,325.57 5,981,447.172 709,435.962 12.00 9,072.81 84.16 Start DLS 12.00 TF093.00 13,700.00 91.51 7.56 8,634.28 8,595.93 -3,321.58 5,961,522.810 709,437.810 12.00 9,145.14 93.00 13,794.22 90.84 18.85 8,632.34 8,687.49 -3,300.10 5,961,614.937 709,456.697 12.00 9,228.75 93.28 Start DLS 12.00 TFO -89.00 13,800.00 90.85 18.16 8,632.26 8,692.97 -3,298.26 5,961,620.466 709,458.376 12.00 9,233.62 -69.00 13,874.22 90.99 9.25 8,631.06 8,765.00 -3,280.70 5,961,692.957 709,473.894 12.00 9,299.23 -89.01 Start DLS 12.00 TFO 89.00 13,900.00 91.05 12.35 8,630.60 8,790.31 -3,275.87 5,961,718.398 709,478.004 12.00 9,322.61 89.00 14,000.00 91.22 24.35 8,628.62 8,885.04 -3,244.46 5,961,813.970 709,506.720 12.00 9,406.88 89.06 14,100.00 91.34 36.35 8,626.38 8,971.16 -3,194.04 5,961,901.476 709,554.679 12.00 9,478.18 89.29 14,200.00 91.40 48.35 8,623.98 9,044.90 -3,126.81 5,961,977.093 709,619.786 12.00 9,533.40 89.56 14,300.00 91.40 60.36 8,621.52 9,103.06 -3,045.72 5,962,037.516 709,699.194 12.00 9,570.13 89.85 14,324.22 91.39 63.26 8,620.93 9,114.49 -3,024.38 5,962,049.552 709,720.199 12.00 9,576.05 90.14 Start DLS 12.00 TFO -89.60 14,400.00 91 AS 54.17 8,619.05 9,153.79 -2,959.71 5,962,090.663 709,783.731 12.00 9,598.47 -89.50 14,500.00 91.48 42.16 8,616.48 9,220.35 -2,885.36 5,962,159.292 709,856.160 12.00 9,644.98 -89.73 14,574.22 91.46 33.25 8,614.57 9,278.99 -2,840.03 5,962,219.189 709,899.815 12.00 9,690.86 -90.03 Start DLS 12.00 TFO 90.00 1 14,600.00 91.45 36.35 8,613.92 9,300.15 -2,825.32 5,962,240.755 709,913.916 12.00 9,707.82 90.00 RWO17 11:42.39AM Page 4 COMPASS 5000 1 Build 81D 040 BP ,,,,�,�- by CTD PLANNING REPORT BAKER E.... pa,, Company: North America - ALASKA -BP Local Co-ordinate Reference: Wall 04-21 Project: Prudhoe Bay TVD Reference: Mean Sea Level Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: 04-21A WPO6 Database: EDM RSK-Alaska PROD - ANCP7 Planned Survey MD Inc Asa TVDS$ NIS FJW Northing Easting DLeg V. Sec TFace (usft) (°) Itrue_north azim (usft) (usft) (usft) (usft) (usft) (°1100usfy (usft) (°) 14,700.00 91.41 48.35 8,611.41 9,373.89 -2,758.10 5,962,316.371 709,979.020 12.00 9,763.04 90.08 14,799.22 91.30 60.26 8,609.06 9,431.66 -2,677.69 5,962,376.390 710,057.764 12.00 9,799.56 90.38 Start DLS 12.00 TFO.20.00 14,800.00 91.39 60.23 8,609.05 9,432.05 -2,677.01 5,962,376.796 710,058.429 12.00 9,799.77 -20.00 14,806.82 92.15 59.95 8,608.83 9,435.45 -2,671.10 5,962,380.359 710,064.235 12.00 9,801.63 -20.00 04-21A T3 14,900.00 102.65 58.05 8,596.84 9,484.30 -2,592.84 5,962,431.411 710,141.078 12.00 9,830.03 -20.01 14,920.94 105.00 55.14 6,591.84 9,495.79 -2,576.07 5,962,443.370 710,157.522 12.00 9,837.11 -20.51 Start Turn 12.42 14,986.01 105.00 63.22 8,575.00 9,527.97 -2,522.14 5,962,477.057 710,210.515 12.00 9,855.23 88.95 Start Turn -12.42 15,000.00 105.00 61.48 8,571.38 9,534.24 -2,510.17 5,962,483.664 710,222.304 12.00 9,858.40 -89.78 15,100.00 105.00 49.06 8,545.50 9,589.16 -2,430.94 5,962,540.802 710,299.944 12.00 9,892.45 -88.39 • 15,136.00 105.00 44.59 8,536.18 - 9,612.94 -2,405.58 5,962,565.294 710,324.612 1200. 9,909.37 -89.42 TO at 15136.00 - 04.21A SOR Polygon - 04.21A Fault3 8/2@017 11:42:39AM Page 5 COMPASS 5000 1 Build 81D i,N% by Vertical BP Depth Depth CTD PLANNING REPORT BAKER gUGHES (usft) (usft) (usft) Company: North America - ALASKA - BP Local Co-ordinate Reference: Well 04-21 Project: Prudhoe Bay TVD Reference: Mean Sea Level Site: PB DS 04 MD Reference: Kelly Bushing / Rotary Table @ 60.00usR (NABORS 4E Well: 04-21 North Reference: True Wellbore: 04-21A Survey Calculation Method: Minimum Curvature Design: D4-21AWP06 Database: EDM R5K-Alaska PROD -ANCP1 Plan Annotations Measured Vertical Local Coordinates Depth Depth +N/ -S +E/ -W (usft) (usft) (usft) (usft) Comment 12,600.00 8,354.07 7,858.55 -2,787.86 04-21 Actual Survey 12,625.00 8,371.08 7,876.41 -2,791.96 04-21 Actual Survey 12,650.00 8,388.16 7,894.17 -2,796.17 04-21 Actual Survey 12,675.00 8,405.26 7,911.91 -2,800.44 04-21 Actual Survey - TIP 12,700.00 8,422.33 7,929.66 -2,804.75 KOP 12,720.00 8,436.19 7,943.66 -2,808.15 Start DLS 19.00 TFO -180.00 12,750.00 8,458.35 7,963.29 -2,812.93 Start DLS 19.00 TFO -70.00 13,134.22 8,634.40 8,148.89 -3,064.45 Start Tum 19.00 13,384.22 8,638.77 8,291.93 -3,260.72 Start DLS 12.00 TFC, 84.00 13,624.22 8,636.61 8,520.37 -3,325.57 Start DLS 12.00 TFO 93.00 13,794.22 8,632.34 8,687.49 -3,300.10 Start DLS 12.00 TFO -89.00 13,874.22 8,631.06 8,765.00 -3,280.70 Start DLS 12.00 TFO 89.00 14,324.22 8,620.93 9,114.49 -3,024.38 Start DLS 12.00 TFO-89.50 14,574.22 8,614.57 9,278.99 -2,840.03 Start DLS 12.00 TFO 90.00 14,799.22 8,609.06 9,431.66 -2,677.69 Start DLS 12.00 TFO -20.00 14,920.94 8,591.84 9,495.79 -2,576.07 Start Turn 12.42 14,988.01 8,575.00 9,527.97 -2,522.14 StartTurn-12.42 15,136.00 8,536.78 9,612.94 -2,405.58 TD at 15136.00 Checked By: Approved B PP Y Date: &Z2017 11:42:39AM Page 6 COMPASS 5000.1 Build BID �W"9 '51'38 14-1 E-- ISNLOe Praim: Pwtlhoe Bay ma�+��u MLLBORE DETAILS: 0421A _- aE'Ea.E6aawefn00 A WP06 w21AradE3 i t%. •N Ste: PB p504 Wel: 04-21 wdl8ore: w-z1A Plea: 0421AWP06104-21f0 VA) P Furey awy..ssa.,u oe�n�w..4 .. Parent m9w.: 0421 Tie on MD: iZ600.00 0^^'d��IraEl Raa.re.. wu0e2tnu E4m W^w0'mlReaerc. leaea.. sNm.rvslal,.,..: Be-Bmx owm Ekeeuee OmEiRMerce Fi10n18elfldnTM®BIAOuapla8]Re0Ee1 Ce,aee as W. -D qtly ERR QIP 810 HES I 1260010 4718 34719 8354.6 785855 479786 DW MILL DETAILS 04-21 8354.01 IMW 0421AA alfloey 2 120510 16.94 34684 8371.6 7876.41 279186 1.89 -13613 831887 W71.W 1269.6 0431Adu s., �W"9 '51'38 14-1 E-- ISNLOe LmAdv Slol Uao Uoo 59Tao2 T. ".1m 7x. Ea.743N 149'1.'..0W A WP06 w21AradE3 SECTpNOETNlS ANNOTATIONS See w he AB MWD ALS aFFW DIW Trace VSm Tape WO MD Am eon I 1260010 4718 34719 8354.6 785855 479786 DW ODD 830026 8354.01 IMW 0421AA alfloey 2 120510 16.94 34684 8371.6 7876.41 279186 1.89 -13613 831887 W71.W 1269.6 0431Adu s., 3 1265010 436 31652 MAE 7894.17 2786.17 0.99 -109.01 833682 05.16 IMM W21AUMSurv, 4 1267510 4687 346.40 8/0528 791121 -9619 0.35 8353 835517 B4E.9 1975.6 D421A U959Ney-aP 5 1766 4701 316.33 042233 7929% 4M4.75 DA -638 837333 &22.33 127%W BOP 45.21 34633 80.35.19 7913.66 -286.15 910-IW68387.74 6 MIN tliw� 8136.19127910 SW01619WTr0-IW.W 7 127506 3951 34633 M35 ]963.9 -281223 1910 4WW &87.95 845815 12750.6 SMBOLS19.007 0.70.38 8 1313422 BEN 28233 Wd4A0 MOM 3064.45 1910 no WI9.W 530.40 1313452 SISATwn19W 9 1084.9 69.38 MAD W38.77 85123 3 Ln 1910 WDO WW.46 8638.77 1338412 SIa40LS 1261r084.6 10 1524.9 92.01 SWAB 863661 MON 33957 1210 MA W72.81 8636.61 15249 BMDLS12WTr060D 11 1379412 W.W IBM 86231 8887.49 3300.10 IUD 38.6 922875 8MZ3413794.22 Ste"DLSIZWT NRW 12 1387412 9099 915 86116 P656 326.9 1210 89D0 99923 W31.06 13874.22 SIaIDL512.007089W 13 1438452 9139 63.9 86X193 9114.9 3324.38 126 8910 67615 662314324.22 SWIXS 1m voPo .W 14 145/412 91 A6 3M 381457 97899 -MOM126 8950 WRM14914574.9 SWD4512WTr06.6 15 1479912 9130 W.26 W M 943166 267769 12.6 WAD 979955 EWAB 1479952 SWDLSI2W7o-9.38 16 149994105.6 55.14 859184 MEN 357617 126 -9009837.11 591811499.6 SlaATwn1242 17 14986.01 0.0D 051 ET510 952797 -259.14 12.6 386 65523 E75.6 MEW S1aRTum-1242 1B IS136M 105.6 44.69 536.18 961294 -245.58 12.6 8OA0 990937 538.18 15156 me15136.6 IW,1U' .IOW -Nlq, W esl(-YEwl(+)(200 usB/m) 04-21 A WP06 w21AradE3 IUtW 8151 11x1,10 04-21A WP06 0L21ASORPoty9oo ' 9W0. Pd 21_An2 � Oi21A W%p ¢r0cG V}21q WMb v W-21AT3 _ am tliw� -92. ll a595+ wxWw1 'm eaw� 980,1 _ s U4-211 taolll � ar41m N 8095 801 UI'lIA fE 9Hm 1 4-'I 2 11421AT1 Be. TWO 7WU JNkl -IYw 4200 -Nam -IM -3WO 93" .RW aUpzaW .XAN -2191 .22 -M..1" .1(. esl(-YEwl(+)(200 usB/m) 6T 8151 04-21A WP06 a � awil V}21q WMb v tliw� ll a595+ 'm eaw� _ + iNQIATI 8095 11111122' 2 anal w-21AT3 amI Mem Sea Leiel WEO SM 0125 93711 6115 HW 9505 a'w 095 SAW tlW5 87A 9215 M20 9965 9910 9955 'xaV 9LW5 SVPp 9n5 916 9225 92N 9315 93W WO5 "%1 1495 95N1 9585 9630 %75 977 W65 9tl10 WS5 95(X1 9945 We) 10035 IWtlO Vertical Section at 345.95° (45 usH/in) Obp 1010 (1070 W75 10 4781 wlw 95n 950, WY1, 13111 C 9215 � 9129 h P W2 + 8938 s C 8835. 8u, 0 o eras h ssw U51 wo sms elm .71 79W 1985 rnm- Memnsea el 4ms Pmim. PMO..Bay site: PB Os oa Well: 00.11 Welhore: W21A Phn:U 1AWP861W-21 1A1 _a DE 00.21A DETAI!4V 9BF9BCfIlen9WleP1 C^n+'W Pml9+exe W49ui.iulbee [!�R6 on MD: W.80 9ah+(mnlhA'1ne. Wn491M F«90 rvRu.e.e: 5n-101W1.9mQ Akwue9AMq�Msxe. [A 9vAy/PeY1iM®WNUEIWB]P6H5 C+��n Metlr! 6timmCin4n Bp4UUGHES Wes((-)/East(+)(95 usB/in) .4401 1_ Project: Prudhoe Ba 1 Y ANTI-COLLISIONSETTINGS COMPANY DETAILS: Nadh Amerce -ALASKA-Bp bp f4orZ Site: PB4-21 Well: 04-21 _ Irae Depth RangeFi otl. M0, interval' 2513 DePtl1 Rarge Fmm: 12600.00 To 15136.00 _ - - Calculation Met,D MmmumCwahae -1 E1mr System: I$DWSA . '0I V GHES Weilhore: 0421A Results Limited By: Centre Distanre' 1710.03 Scan Me TCV. Cylinder Nodh Y -HI 280 Plan: 04.21AWPO6(04-21104-21A) Rehashes, Plan. 04-21A VVP06(04-21/04-P1A) Emor Surface: EllipticalC "A nm 11-10 w _ _ ., blaming. Method: Rules Basad"tl 260 c_ 400 380 360 340 320 LEGEND Lta. U -se u08 vi 300 1.3.10 1,10. u10 w .21 O431. Dan t/ i 280 11-09. 11Jaq 11J w "A nm 11-10 w - 11 Alx 07w 260 c_ j:-.. 1-IDFe1. u -a. v.mat n-wrel w � I 3240 o220 - m `m ,200 d 0180 04-21 0 W 160 ! d 04-21 U 140 120 Possible Offset Well 100 Magnetic Interference: 80 From To KOP • 12,940' MD 60 40 20 N N V N O O O O OW > OO N ON O6 0 OO A OY P O O O p A O$ A m p O O O O Measured Depth (100 usNin) JLC{ i Project: Prudhoe Bay ANTI -COLLISION SETTINGS COMPANY DETAILS: North Amena-ALASKA -BP t p {� _ - _ _ Site: PB DS O4 Well: 04.21 Interpolation Method MD, interval: 25.00 Depth Range --.. - Calwlation McBad. Minimlm Curvalue - Error System: ISCWSA SAM BA ey9 1"11 UGHES Fmm: 12600.00 To 15136.00 Wellbore: 04-21A Rasl9ls Limited By. Carl Distance' 1710.03 San Method: Enor Tmv. Cylinder Nudh ar£:641zan� Plan: 04.21AWP06(04-21104.21A) Reference: Plan: 04-21A NR06(042110441A) Sturm: EIIipOal Conic Warning Method. Rhes Based _ From Colour To MD I•. , u.n. Depth Range: 12600.00 To 15136.00 .. . �° °� �I ` "� "a'"a " aearlw4. ` .� eel Possible Magnetic Interference: 12600 12940 Sec - -_ u0 - 'Gc Azt - TVo-- .N7-8- -- :El=vo obu Trace V3sd 100 1 12600.00 47.28 37.29 635WD ]65855 4)74a 0.00 0.00 93003fi From KOP to 12,940' MD 3 0 12940 13000 2 12625.00 3 12650.00 46.84 34681 6371.06 7876.41 -2791.98 1.89-13al)3 8318.57 1 128)5.0 48.86 3-76.52 BJ.16 46.8) 318.40 Be11105.ffi ]881.1] ]811.91 4]86.1] -2800.11 O.B9 -100.01 8338.82 0.35 43.53 9355.07 g0 13000 14000 5 12]00.00 1].01 318.33 8422.3) 7929.68 -2801.75 060 -20.09 8373.33 14000 -- 6 12]20,00 45.21 316.33 8430.18 7913.60 -2808.15 9.00 -1110.00 M7.74 15136 7 12]50.00 B 13134.23 39.51 318.33 8458.35 88.00 282.33 8634.40 7963.29 8148.98 8812.93 3CW.45 19.00 -180.0 11407.95 18,00 -70.00 8649,06 32 60 0 9 13384,22 89.00 329.83 6638,T7 11291.93 2ffi0.72 19.00 90.00 8835.46 10 1382432 92.01 356.48 8636.81 8520.37 385.5] 12.00 84.00 8072.81 11 13784.22 90.84 18.85 8032.1 8687.49 3300.10 12.0 93.00 9229.75 70 12 138]4.22 90.99 9,25 6831.8 8765.00 93=70 12.00 4900 9299.23 13 14324.22 9119 63.26 9@093 9114.49 902438 12.00 11900 9578.05 14 14574.22 B1.4fi 3325 6514.57 827880 4840.03 12.00 49.50 869886 15 179932 81.30 60.26 11609.05 9431.66 -26]].69 12.00 90.00 979956 04-21 16 14920.91 105.0 55.14 8591.84 9195.]8 4576.0) 12.00 20.00 9637.11 1) 14906.01 105.00 83.22 115]5.03 952].9] -252214 12.0 90.00 8855.23 30 18 1sa... 105,00 11.59 11536.10 %12,94 -2405.511 12.00 90.0 9909.37 5 0 a6vsv9a x1u 40 1 o',u m o'o". 6wryllb, Tool 30 n'w40o 0 15.46 u`s�; v+w mu,a o cxs 12 2" 0 34 0 9 27 32 2 0 90 1 60 2 100 1 0 13 4 1 30 B o 5 60 40 90 24 60 120 4 60 21 6 70 4.2 Unh!3M,,' ,l9®Va71"78'p SO99wN�1 60 40 u9ffa I,M�vI 24 120 120 ]14-078-7339 wo.un, u.tow 907W-7604Emw0w9Y E lea,laa lsa vl 160 Y.ioh.R,ob. BII-Survey Manager' 90 84a1.04]TpUlw 901.k22416 Cd PMre - „m, llms, n[alvx Tw SlorB an1-00Cawdinabr, 2 D 11.7 11790 22 200 40 907-2056241 ca1PM1ma n-79,nsmet. n-7o.mmw Pallek Rider M IDGmcdiolot 100 + ittl IIaNBy tl.on!. 907-9523497 CAPlnw 180 2 240 0 CulUkcl, opara9°nsm-erAzimuth from North [0] vs Centre to Centre Separation [10 usft/in] 90L39i 180 1A 5534 Ca'IPMre Azimuth Imm Nonh('Ivs Centre to Centre 5eparMion [CusNiin) EOETM4 0421A RMREWEI6AlMx11W fNMO0d-21 ComYa 16LEIRMeae: WJ.I.Tw. on Mo: '/sE�a l>•'Rl Od— We+smN+a OnMD: 12600.00 �V srEm lvsl xa.u... sa-0mx ceoEl E$ Nwve6 MaWbrssr. xpBUNp/Pey6 TY066mWx9M954E91 La[4�1-n I4Rd NimniOuvY�e Proj<[L Pluaxoe Bay bp SBe: PB 8501 We O: 04-21 6W�.rcwtm.�wn wrvkFw 6i6%� Vfo Wellbarc: 04S1A Ppn: 0431A WPO6 PIus 5001 M010d-21104-flAI 4�aejei. 6mt Meen Sea L..1 Eastlrg 150D us04n) s963mo I 586]500-i a�21104-21A N4D6 Plus 5008 bD 1NP065962Poo �i5m� �4-21r1j♦4-21A n 5962900. ' sv62o90 .1.: ' 04-Z, D4 -2W P06 Plus 500ft MD _5�1Po0 56fi1pC0'. 0�1-�{�{�1;04�21 59fi1 W0 Sa91500 8000 58505W 595oroo'. btz Ov902roa22A s96moo sese5ooi ®ika/Dd-?D S9s9soo SO. 0 ®9s22/0a1IAPBt ]0 s9s9mo ^yg5g50a. 6000 8000 �bDq-24 1 59505000 i g 0Po0 i I000 5950Po0'� 55957500 80110 0435/Od-]5A S j0(N 6WD 3Y04-35APBI '599500c �W5]W] 35Icb35 a04 �2W4. 6 Lt 595]000' s956soa: 70� 8014 SBSfi500 59=gp00 W 500D 04-34,94. � � 5956 W0 5955500' sOa 6000 p 5955500 %55900 M1O 00 S��/ o 5955000 59su5W «� 0 5000 5959900 SBSdWO a s9sdwo wo 0 595]500 S9SlW0 5953900 5s525oo 00 __..N �._. ,.. _ Fasting 15000sMn) Meen Sea L..1 bp North America - ALASKA - BP Prudhoe Bay PB DS 04 04-21 USA00001141 04-21 A 04-21A WP06 Travelling Cylinder Report 02 August, 2017 BA ER 0 I IGHES BAT GE company MN BP 1r - by Travelling Cylinder Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Project: Prudhoe Bay TVD Reference: Reference Site: PB DS 04 MD Reference: Site Error: 0.00 usft Norm Reference: Reference Well: 04-21 Survey Calculation Method: Well Error: 0.00 usft Output errors are at Reference Wellbore 04-21A Database: Reference Design: 0421AWP06 Offset ND Reference: , BA�(ER UGHES aGEcompary Well 04-21 Mean Sea Level Kelly Bushing / Rotary Table Q 60,00usft (NABORS41ES) True Minimum Curvature 1.00 sigma EDM R5K-Alaska PROD -ANCP1 Offset Datum Reference 04-21A WPG6 =filter type: NO GLOBAL FILTER: Using user defined selection & filtenng criteria WARNING: There is hidden tight data in this project nterpolation Method: MD Interval 25.00usft Error Model: ISCWSA )epth Range: 12,600.00 to 15,136.00usft Scan Method: Tray. Cylinder North Results Limited by: Maximum center -center distance of 1,710.03 usft Error Surface: Elliptical Conic Survey Tcol Program Date 8/2/2017 From To (usft) (usft) Survey(Wellbore) 100.00 12,600.00 Gyro MS (04-21) 12.600.00 15,135.06 04-21A WP06(04-21A) Tool Name GYD-CT-CMS MWD Description Gyrodata writcasing mis MWD - Standard Casing Points Lis DS 03 - L3-08 - L3-08 - 1-108 Measured Vertical Casing Hole Depth Depth Allowable Diameter Diameter (usft) (usft) Name (in) (in) 2,393.00 2,300.46 133/8" 13.375 17,500 12,573.00 8,335.72 95/8" 9.625 12.250 12,700.00 8,422.33 31/16"Planned TOW 3.188 3.188 15,136.00 8,536.17 41/2" 4.500 4.500 Summary Lis DS 03 - L3-08 - L3-08 - 1-108 Reference Offset Centre to No -Go Allowable Assigned: Major Risk Run, Asa j Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Measuretl Verticat Depth Deptp Offset Well - Wellbore - Design (usft) (usft) (usft) Offset Wellbore Centre +WS +E/44 (usft) Cess to centre Lis DS 03 Allowable Mraing Deviation (..it) lusm IesR) (ash) Nef) (.an) (1) 13-08 - L3-08 - 1-3-08 13,725.00 8,650.00 1,498.25 211.25 1,287.68 Pass - Major Risk 1-3-10 - 13-10 - L3-10 14,175.00 9,050.00 480.04 146.10 337.34 Pass - Major Risk L3-22 - L3-22 - 1-3-22 12,608.31 9,675.00 1,608.43 520.66 1,270.74 Pass- Major Risk PB DS 04 8,91362 -4.76895 10.937 1,62562 21032 163190 Pass - Major Risk 04-21-04-21-04-21 12,912.30 12,925.00 43.31 6.64 43.31 Pass - NOERRORS 0422 - 04-22 - 04-22 1.615.62 218.36 1621.10 Pass -Major Risk 13.72500 Ilan 66_ 8.075.00 Out of range PB DS 11 -5673 5912.09 4.76989 10.937 1,806.15 210.39 11 -09 -11 -09A -11-09A 13,200.00 13,329.00 978.81 237.62 760.74 Pass - Major Risk 11-40-11-40-1140 13,950.00 14,150.00 1,093.55 291.76 800.89 Pass - Major Risk 1140-1140PBI-1140 Wp07 13,925.00 14,025.00 1,087.18 318.31 766.21 Pass - Major Risk 1140 - 11-40PB1 - 1140PB1 13,675.00 13,618.00 1,091.61 304.87 786.55 Pass - Major Risk Offset Design Lis DS 03 - L3-08 - L3-08 - 1-108 oases sire Error. caress survey Program: IOD-GYD-CT-CMS. 880081_I1,!D Assigned: Major Risk Run, Asa j 011sat Well Ener. 000 usft Rererence Onaet Semi Malerears Measuretl Verticat Depth Deptp Measured Depth Venial Depth Reference onset Toonace+ Arlmutb Offset Wellbore Centre +WS +E/44 C 'ng- Hole take Cess to centre No Oa Disunce Allowable Mraing Deviation (..it) lusm IesR) (ash) Nef) (.an) (1) (usft) (-an) (in) (ush) (u1) lush) 13.72500 atco as 8.000.00 7,937.96 59.M 521 -54.29 591400 -4,76847 10937 1,635.53 21828 1,44303 Pass - Malar Risk 13,725.00 0,63386 8,025.00 7,96296 59.M 5.22 -55.09 8,91362 -4.76895 10.937 1,62562 21032 163190 Pass - Major Risk 13,725,00 8.633.66 5000.00 7,907.95 59.M 523 -55.90 8,91325 4,76903 10.937 1.615.62 218.36 1621.10 Pass -Major Risk 13.72500 Ilan 66_ 8.075.00 8,012.W Was 524 -5673 5912.09 4.76989 10.937 1,806.15 210.39 161085 Pass - Major Risk CC - Min centre to center distance or covergent point, SF - min separation factor, ES - min ellipse separation WWZU7 f IU: 51:2 IAM Page 2 COMPASS 5000.1 Build BID bp North America - ALASKA - BP Prudhoe Bay PB DS 04 04-21 04-21 A 04-21A WP06 Plus 500ft MD Anticollision Summary Report 03 August, 2017 BATER a GE company by�eoo Company: North Amenc:a- ALASKA -BP Project: Prudhoe Bay Reference Site: PB DS 04 Site Error: O.00usft Reference Well: 0421 Well Error: 0,00usft Reference Wellbore 04-21A Reference Design: 04-21A WPO6 Plus 500ft MD BP BAKER 10 Anticollision Report UGHES E l—, Local Coordinate Reference: Well 04-21 TVD Reference: Mean Sea Level MD Reference: Kelly Bushing I Rotary Table @ 60.00usft (NABORS 4ES) 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 Reference 04-21A WPO6 Plus 500ft MD Fitter type: NO GLOBAL FILTER: Using user defined selection & filtering criteria WARNING: There is hidden tight data in this project Interpolation Method: MD Interval 25.00usft Error Model: ISCWSA Depth Range: 12,600.00 to 15,636.00usft Scan Method: Tray. Cylinder North Results Limited by: Maximum center -center distance of 200.00usft Error Surface: Elliptical Conic Survey Tool Program Dab 8/32017 From To (usft) (usft) Survey (Wellboro) Tool Name Description 100.00 12,600.00 Gyro MS (04-21) GYD-CT-CMS Gyrodata cont.casing Ms 12,600.00 15,636.00 0421 A WPO6 Plus 500ft MD (04-21A) MWD MWD - Standard Summary Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Otfset Well - Wellbore- Design (usft) (usft) (usft) (usft) PB DS 04 0421-04-21-04-21 12,912.30 12,925.00 43.31 15.38 28.32 Pass - Major Risk 0421-0421 A -04-21A WP06 15,136.00 15,136.00 0.00 49.45 -45.76 FAIL - Major Risk 04-22 - 04-22 - 0422 Out of range 632017 4:04:07PM Page 2 of 3 COMPASS 5000.1 Build 81D ?�b j'� BP BAT(ER .0io) N Anticollision Report rjUGHES Company: North America -ALASKA - BP Project: Prudhoe Bay Reference Site: PB DS 04 Site Error: O.00usft Reference Well: 04-21 Well Error: 0.00usft Reference Wellbore 04-21A Reference Design: 04-21A WP06 Plus 500ft MD Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well 0421 Mean Sea Level Kelly Bushing / Rotary Table @ 60.00usft (NABORS 4ES) True Minimum Curvature 1.00 sigma EDM R5K- Alaska PROD - ANCP1 Offset Datum reference Depths are relative to Kelly Bushing / Rotary Table @ Coordinates are relative to: 04-21 Meet Depths are relative to Offset Datum Coordinate System is Alaska NAD27 State Plane Zones, NAD27-OGP-Usa AK :entrol Meridian is 150' 0' 0.000 W ° Grid Convergence at Surface is: 1.62° 1 I I I I i I I I I I Ladder Plot 0 2500 5000 7500 10000 12500 15000 Measured Depth (2500 usftlin) LEGEND -A- 04-20,04-20,042OV1 -F 04-22,04-22APB1,04-22APB1VO $ 04.34,0434A,04-34AV6 $ 0421,0421,0421 V3 -$ 04-22,04-22PB1,04-22PS1 Vt $ 04-35,04-35,04-35V1 $ 0421,04-21A,04-21AWP06VO -I-- 04-23,04-23,04-23V1 -*- 0435,0435A,0435AVO -rte 0422,04-22,04-22V1 $ 04-23,0423A,04-23AV1 $ 04-35,04-35APB1,0435APB1 VO •} 04-22,04-22A,04-22AVO $ 0424,04-24,04-24V1 $ 04-21AVVP06PWS500ftMD $ 04-22,0422AL1,04-22AL1 VO $ 0434,0434,0434 V2 8/3/2017 4.04:07PM Page 3 of 3 COMPASS 5000.1 Build 81D Well Blank ')R2 -AC BOP Schematic Quick Test Sub to Otis 1.t K —. —, _ Top of 7" Otis O.Oft—.—.—.—._. _._._._.ji._,_. Distances from top of riser Excluding quick -test sub Tap of Annular 0.0 ft Top Annular Element Bottom Annular 2.0 ft CL Blind/Shears CL 2-3/8" Combi's 4.1 K Deployment CL 3" Pipe/Slips 1 6.6 ft I I CL 2.1/8"x34/2" VBRs et Kill Line CL Blind/Shears CL 2-3/8" Combi s CL of Top Swab CL of Bottom Swab CL Flow Tee CL of SSV CL of Master Valve LDS Gound Level 10.0 K 10.7 K 13.3 K 14.6 K 16.2 ft BOP2 17.5 K } Fusable 19.0ft SON 20.5 K — q ate ` \ 7-1116" 6k Flange x T' Otis Box 4—Swab 2 ,,—Swab 1 Choke Line Test Pump Hose TRANSMITTAL LETTER CHECKLIST WELL NAME: �. //L '/ Y—' / / / PTD: 2-17 - /�Z Development _ Service _ Exploratory _ Stratigraphic Test —Non -Conventional FIELD: POOL:ltit / 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. No. 50- (If last two digits _'API 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 on permit). 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 fust caught and 10' sam le 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. (Com an Name) must contact the AOGCC to obtain advance approval of such water well testing pro Regulation 20 AAC 25.071(a) authorizes the AOGCC to specify types of well logs to be nm. In addition to the well logging program proposed by (Company Name l 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 PTD#:2171170 Company BP EXPLORATION (ALASKA) INC. _ Initial Class/Type _ Well Name: PRUDHOE BAY UNIT 04-21A Program DEV Well bore seg _DEV / PEND GecArea 890_ _. Unit 11650 _ On/Off Shore On Annular Disposal r Administration 17 Nonconven. gas conforms to AS31.05.0300. 1..A),(j.2.A-D) NA Date: 1 Permit fee attached NA 1g 1) 2 Lease number appropriate Yes Surface Location lies within ADL0028324; Portion of Well Passes Thru ADL0028325; 3 Unique well. name and number Yes 4 Well located in a defined pool Yes PRUDHOE BAY, PRUDHOE OIL POOL - 64015, governed by C0.341F 5 Well located proper distance from drilling unit boundary Yes CO 341 F, Rule 2:. There shall be no restrictions as to well spacing. except that no pay 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 available in drilling unit Yes 341 F, Rule 2. 8 If deviated, is wellbore plat. included Yes 9 Operator only affected party Yes 10 Operator has. appropriate bond in force Yes Appr Date 11 Permit can be issued without conservation order - Yes SFD 8/11/2017 12 Permit can be issued without administrative approval Yes 13 Can permit be approved before 15 -day wait Yes 14 Well located within area and 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 (For service well only) NA 18 Conductor string provided NA Conductor set for PBU 04-21 Engineering 19 Surface casing protects all known USDWs NA Surface casing set in PBU 04-21 20 CMT. vol adequate to circulate on conductor & surf csg NA Surface casing set and fully cemented 21 CMT vol adequate to tie-in long string to surf csg. NA 22 CMT will cover all known productive horizons Yes Productive interval will -be completed with cemented production liner and perforated 23 Casing designs adequate for C, T, B & permafrost Yes 24 Adequate tankage or reserve pit Yes Rig has steel tanks; all waste to approved disposal wells 25 If a re -drill, has a 10-403 for abandonment been approved Yes PTD 185-212, Sundry 317-372 26 Adequate wellbore separationproposedYes Anti -collision analysis complete; no major risk failures 27 If diverter required, does it meet regulations. NA Appr Date 28 Drilling fluid program schematic & equip list adequate Yes Max formation pressure is. 3342 psig(7.43 ppg. EMW ); will drill w/ 8.4 ppg EMW VTL 9/12/2017 29 BOPEs, do they meet regulation Yes 30 BOPE press rating appropriate; test to (put psig in comments) Yes MPSP is 2477 psig; will test BOPS to 3500 psig 31 Choke manifold complies w/API RP -53 (May 84) Yes 32 Work will occur without operation shutdown _ Yes 33 Is presence of H2S 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 DS 04 wells are H2S-bearing. H2S measures are required. Geology 36 Data presented on potential overpressure zones Yes Planned drilling mud program about 8.4 — 9.5 - 9 P 9ram - ( ppg) appears adequate to control operator's forecast Appr Date 37 Seismic analysis of shallow gas zones NA pore pressure gradient (about 7.4 ppg). Should higher pore pressures be encountered, SFD 8/11/2017 38 Seabed condition survey (if off -shore) NA BP has immediate access to nearby fluid. mixing facilities. Managed pressure drilling techniques may 39 Contact name/phone for weekly progress reports [exploratory only] NA be utilized to improve hole stability. Geologic Engineering Public Commissioner: Date: Commissioner: Date Commissioner Date DTs 1g 1) q►r�l,
