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213-026
Operator Name:2. Exploratory Development Service 5 Permit to Drill Number:213-026 6.API Number:50-029-23485-00-00 PRUDHOE BAY, PRUDHOE OIL Hilcorp North Slope, LLC 5. Field/Pools:9. Well Name and Number: ADL 028283 & 047451 Property Designation (Lease Number):10. 8. PBU U-16 7.If perforating: What Regulation or Conservation Order governs well spacing in this pool? Will planned perforations require a spacing exception? Stratigraphic Current Well Class:4. Type of Request:1.Abandon Plug Perforations Fracture Stimulate Repair Well Operations shutdown OA Cement Squeeze Op Shutdown GAS GSTOR WAG SPLUG Abandoned Oil 5 WINJ Exploratory Development 5Stratigraphic Service WDSPL 12. Attachments: PRESENT WELL CONDITION SUMMARY 17504 Effective Depth MD: 13cr85 11. 7/25/2020 Commission Representative: 15. Suspended Contact Name:Aras Worthington Contact Email: aras.worthington@hilcorp.com Authorized Name: Stan Golis Authorized Title:Operations Manager Authorized Signature: Plug Integrity BOP Test Mechanical Integrity Test Location Clearance Other: Yes No Spacing Exception Required?Subsequent Form Required: Approved by:COMMISSIONER APPROVED BYTHE COMMISSION Date: 5OtherAlter Casing Pull Tubing Conditions of approval: Notify Commission so that a representative may witness Sundry Number: COMMISSION USE ONLY 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approval. Detailed Operations Program Packers and SSSV Type: No SSSV Installed Packers and SSSV MD (ft) and TVD (ft): Perforation Depth MD (ft):Tubing Size: Size Total Depth MD (ft):Total Depth TVD(ft): 8909 Effective Depth TVD:Plugs (MD):Junk (MD): Other Stimulate Re-enter Susp Well Suspend Plug for Redrill Perforate Perforate New Pool 12452 / 8701 None Date: Liner 4942 4-1/2" 12560 - 17502 8789 - 8909 8430 7500 Well Status after proposed work: 16. Verbal Approval: Change Approved Program 41 - 3513 41 - 2848 14. Estimated Date for Commencing Operations: BOP Sketch 41 Structural 7240 Proposal Summary 13. Well Class after proposed work: 4-1/2" HES TNT Packer 13716 - 17197 9038 - 8940 4-1/2" 12.6#12573 Production 17398 8922 None Unkown 121 9-5/8" 7" Contact Phone:907-564-4763 Date: 5410 80 20"Conductor 3090 GINJ 5 Post Initial Injection MIT Req'd? Yes No 5 5 Comm. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Surface 3472 5750 Intermediate 12666 38 - 12704 38 - 8906 Address:3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 3. No 5Yes Casing Length MD TVD Burst Tubing Grade:Tubing MD (ft):Perforation Depth TVD (ft): Collapse MPSP (psi): Wellbore Schematic Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 03/2020 Approved application is valid for 12 months from the date of approval. By Samantha Carlisle at 11:07 am, Jul 17, 2020 320-303 Digitally signed by Stan Golis DN: cn=Stan Golis, ou=Users Date: 2020.07.17 11:00:43 - 08'00' Stan Golis MGR20JUL20 10-404 SFD 7/17/2020 DSR-7/20/2020 Yes Required? Comm. 7/21/2020 JLC 7/20/2020 RBDMS HEW 7/24/2020 U-16 OA Cement Squeeze Integrity Engineer: Aras Worthington (907) 564-4763 Ops Engineer: Brian Glasheen (907) 545-1144 Ops Manager: Stan Golis (907) 777-8356 Expected Start Date: July 25, 2020 History U-16 is a gas-lifted Producer drilled and completed in 2013 with an open OA shoe. The well has experienced OA re-pressurization that is manageable by bleeds. A TIFL passed on 6/16/2019 and a PPPOT-IC passed to 3500 psi on 9/25/2018. Current Status The well is currently classified as Operable and the OA re-pressurization is manageable by bleeds. Objective Perform an OA down-squeeze to fully cement the OA and to remedy the OA re-pressurization. Follow up with a Well Lock OA squeeze if necessary. Procedural steps Fullbore 1. Establish injectivity rate and pressure with diesel or crude oil down the OA and into formation. Max OA pressure 4000 psi. Note that burst strength of 9-5/8” 40# casing is 5750 psi and the collapse strength of the 7” casing is 5410 psi. 2. Pump ~120 bbls of 15.8 ppg Class G cement down the OA to fully cement the OA from surface to the Surface Casing Shoe. Pump the following schedule at maximum rate below 4000 psi treating pressure: ¾ 10-bbls of 60/40 or 5 bbls neat MEOH ¾ 20 bbls hot (180 deg) freshwater + surfactant ¾ 20 bbls of neat cement ¾ 30 bbls of cement with 15-ppb aggregate ¾ 70 bbls of neat cement Volumes: top MD bot MD Size ID bbls/ft. Ft. volume bbls 9-5/8” x 7” annulus 0 3513’ 9-5/8” 40# x 7” 26# 8.835” x 7.0” 0.0282 3513’ 99 2 Special Projects 1. Strap the TOC in the OA. 2. Fill and squeeze the remaining void in the OA with well lock, squeezecrete, or similar product (if needed). Squeeze to 4000 psi. DHD/Operations 1. POP and monitor OA pressure. 2. TIFL to verify casing and tubing barriers. 3. Re-treat OA if necessary. 3 U-16 Current 4 U-16 Proposed Fully Cemented OA Image Project Well History File Cover Page XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. p _f 3 - O o Well History File Identifier Organizing(done) Two-sided III 111111 III I Iliii ❑ Rescan Needed III 1111111 I 111111 7RE AN DIGITAL DATA OVERSIZED (Scannable) C for Items: ❑ Diskettes, No. ❑ Maps: Greyscale Items: ❑ Other, No/Type: Other Items Scannable by a Large Scanner L©Q S ❑ Poor Quality Originals: .J OVERSIZED (Non-Scannable) ❑ Other: ❑ Logs of various kinds: NOTES: ❑, Other:: BY: Maria Date: 41/ /s/ P Project Proofing IIIIIIIIIIIII 11111 BY: (Mana ) Date: Lilfiti14 /s/ ill? Scanning Preparation 3 x 30 = gO + I I = TOTAL PAGES 10 I (Count does not include cover sheet) ni BY: �-� -- Date: `� `� /s/ Production Scanning 11111111111101111 Stage 1 Page Count from Scanned File: 1 0 C1--(count does include cover she t) Page Count Matches Number in Scanning Preparation: YES NO BY: 4112. Date: 11/ I� isi p Stage 1 If NO in stage 1, page(s)discrepancies were`found: _ YES NO BY: Maria Date: /s/ Scanning is complete at this point unless rescanning is required. 111111111111111111 ReScanned 111111111111111111 BY: Maria Date: /s/ Comments about this file: Quality Checked 11 IIIIIIIIIIIIIIII 0 1 • v o y 0 o •• 0 0 CO 0 \ H z • • • U v ° > 0 . . . v . 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C III D ,jam) a3 O N c O r-- 0 « c = U a co _ U E ac°i 0 E a 0 E E a. 2 t 0 0 V Wallace, Chris D (DOA) From: AK, D&C Well Integrity Coordinator [AKDCWeIIIntegrityCoordinator@bp.com] Sent: Tuesday, March 25, 2014 4:08 PM To: AK, OPS GC2 OSM; AK, OPS GC2 Field O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; Wallace, Chris D (DOA); AK, OPS Well Pad HUQ; Derrick, Laurie R Cc: AK, D&C Well Integrity Coordinator; AK, D&C DHD Well Integrity Engineer; AK, D&C Projects Well Integrity Engineer; Regg, James B (DOA) Subject: OPERABLE: Producer U-16 (PTD#2130260)Outer Annulus Pressure Manageable By Bleeds Attachments: Producer U-16 (PTD#2130260)TIO Plot.docx All, Producer U-16 (PTD#2130260) underwent an outer annulus repressurization test completed on 03/24/2014. The pressure buildup rate was determined to be 140 psi per day, which is considered manageable by bleeds. The well is reclassified as Operable. A copy of the TIO plot is included for reference. Thank you, Jack Disbrow BP Alaska-Well Integrity Coordinator GVVGlobal Wells Organization Office: 907.659.5102 WIC Email:AKDCWeIIIntegrityCoordinator@bp.com Fr' : AK, D&C Well Integrity Coordinator Sent: ' -•nesday, March 19, 2014 5:58 PM To: AK, OP t OSM; AK, OPS GC2 Field O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Rya , .K, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; • RES GPB East Wells Opt Engr; 'chris.wallace@alaska.gov'; AK, OPS Well Pad HUQ; Derrick, Laurie R Cc: AK, D&C Well Integrity Coordina • • AK, D&C DHD Well Integrity Engineer; AK, D&C Projects Well Integrity Engineer; 'jim.regg@alaska.gov' Subject: UNDER EVALUATION: Producer U-16 ' I #2130260) Sustained Outer Annulus Casing Pressure Above MOASP All, Producer U-16 (PTD#2130260)was verified to have sustained outer annu . casing pressure above MOASP on 03/16/2014. The pressures were tubing/inner annulus/outer annulus of 220/1' •! 1020 psi. The well is reclassified as Under Evaluation and is placed on a 28 day clock to facilitate evaluation. Plan forward: 1. DHD: Perform OART 2. Slickline: Dummy gas lift valves and MITIA pending OART results A copy of the TIO plot is included for reference. 1 Producer U-16(PTD#2130260)TIO Plot • wen:u-16 4.000 3.0CA - Tbg --M--IA 00A - 000A On 1,000 • • • 0125'14 02,01,14 02.4214 031).1,14 01CA 031511 032214 1 Wallace, Chris D (DOA) From: AK, D&C Well Integrity Coordinator[AKDCWelllntegrityCoordinator@bp.com] Sent: Wednesday, March 19, 2014 5:58 PM To: AK, OPS GC2 OSM; AK, OPS GC2 Field O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; Wallace, Chris D (DOA); AK, OPS Well Pad HUQ; Derrick, Laurie R Cc: AK, D&C Well Integrity Coordinator; AK, D&C DHD Well Integrity Engineer; AK, D&C Projects Well Integrity Engineer; Regg, James B (DOA) Subject: UNDER EVALUATION: Producer U-16 (PTD#2130260)Sustained Outer Annulus Casing Pressure Above MOASP Attachments: Producer U-16 (PTD#2130260)TIO Plot.docx All, Producer U-16 (PTD#2130260)was verified to have sustained outer annulus casing pressure above MOASP on 03/16/2014. The pressures were tubing/inner annulus/outer annulus of 220/1460/1020 psi. The well is reclassified as Under Evaluation and is placed on a 28 day clock to facilitate evaluation. Plan forward: 1. DHD: Perform OART 2. Slickline: Dummy gas lift valves and MITIA pending OART results A copy of the TIO plot is included for reference. Please call with any questions. Thank you, Jack Disbrow BP Alaska-Well Integrity Coordinator GVVGlobal Wells Oanization Office: 907.659.5102 WIC Email:AKDCWellIntegrityCoordinator@bp.com 1 Producer U-16(PTD#2130260)TIO Plot Well:0-16 4,000 • • 3.000Tbg f IA 2.000 OA OOA - OOOA On •i 1.000. .. 0125/14 02/1/14 02/&14 02115/14 02127214 03')V14 03+C@'?- _14 Wallace, Chris D (DOA) From: AK, D&C Well Integrity Coordinator [AKDCWelIIntegrityCoordinator@bp.com] Sent: Monday, March 10, 2014 4:44 PM To: AK, OPS GC2 OSM; AK, OPS GC2 Field O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; Wallace, Chris D (DOA); AK, OPS Well Pad HUQ; Derrick, Laurie R • Cc: AK, D&C Well Integrity Coordinator; AK, D&C DHD Well Integrity Engineer; AK, D&C Projects Well Integrity Engineer; Regg, James B (DOA) Subject: OPERABLE: Producer U-16 (PTD#2130260)OAP manageable by bleeds All, Producer U-16 (PTD#2130260) was found to have an outer annulus build up rate (BUR)of 120 psi/day,which is manageable by bleeds.At this time the well has been reclassified as Operable, and may remain online as needed. Please call with any questions. Thank you, Laurie Climer BP Alaska - Well Integrity Coordinator GyvG:obal Wells V 1/11 > Organization WIC Office: 907.659.5102 WIC Email: AKDCWellIntegrityCoordinator@BP.com From: AK, D: C Well Integrity Coordinator Sent: Saturda February 22, 2014 6:35 PM To: AK, OPS GC2 • M; AK, OPS GC2 Field O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan, 'K, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Eng , K, RES GPB East Wells Opt Engr; 'chris.wallace .laska.gov'; AK, OPS Well Pad HUQ; Derrick, Laurie R Cc: AK, D&C Well Integrity Coors .tor; AK, D&C DHD Well Integrity Engineer; A , '&C Projects Well Integrity Engineer; 'jim.regg@alaska.gov' Subject: UNDER EVALUATION: Produce -16 (PTD #2130260) Sustained Inner and Ob -r Annulus Casing Pressure Above MOASP All, Producer U-16(PTD#2130260)was verified to have sustain-• inner and outer annulus casing pressure -bove MOASP on 02/20/2013 after the well was shut in. The pressures were tubi . inner annulus/outer annulus of 2040/ 420/1300 psi. The well is reclassified as Under Evaluation and is placed on a 28 day •ck to facilitate evaluation. Plan forward: 1. DHD: Perform TIFL and then perform an OART 1 d 0 0)Q v ,-J ® ® ® ® C/ ® ® ® a ® o ® o ® WC.) U O D U U U U O D U C.) U Licg IM < Cr. am r- — r- r- r- r r- r r- 'r r- r° I 0 CO IttV vY i2,1 1 CC ▪ o ,,, ! a, - `' o ▪ cd I l? F co 111 W lZ r r r° rr- rr= , rrrr . O ,-„5 r4 a W W ,� kr) 0 << 4 - vi J 4o. m • r,j ,--1 0_ H Y 6�•r+ ') 'r'” (I) (j2)` v v TD m A . tao if) Wr r i'� ul Y 'fi�.e+r ^� c - M P r \ Y N 41 Z i+1 n • r 1,1 fit, Q S 7 hA ;-, J co Q> CO r a' h O '7 O O a r I� ® 1111 ,; Cea a. CC Cr- � 03ou_ 1.1. 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N @ d LLJ L N + N U O U v> 0 y 3 N Q �� x rl m OOl Q Wallace, Chris D (DOA) From: AK, D&C Well Integrity Coordinator [AKDCWeIIlntegrityCoordinator@bp.com] Sent: Saturday, September 07, 2013 9:51 PM To: Regg, James B (DOA); Wallace, Chris D (DOA); AK, OPS GC2 OSM; AK, OPS GC2 Field O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad SW; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; Derrick, Laurie R Cc: AK, D&C DHD Well Integrity Engineer; AK, D&C Projects Well Integrity Engineer; Climer, Laurie A Subject: OPERABLE: Producer U-16(PTD#2130260) IAxOA Manageable by Bleeds All, Producer U-16 (PTD#2130260) had an OART completed on 09/07/2013 with a BUR of 69 psi/day, which is manageable by bleeds.At this time the well is reclassified as Operable and may remain online as needed. Regards Laurie Climer BP Alaska - Well Integrity Coordinator VrM GtabaiWells Organizabon WIC Office: 907.659.5102 WIC Email: AKDCWeIIlntegrityCoordinator@BP.com From: AK, D&C Well Integrity Coordinator Sent: Saturday, August 17, 2013 8:46 PM To: 'Regg, James B (DOA)'; 'chris.wallace@alaska.gov'; AK, OPS GC2 OSM; AK, OPS GC2 Field O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad SW; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; Derrick, Laurie R Cc: AK, D&C DHD Well Integrity Engineer(AKD&CDHDWelllntegri©bp.com); 'AK, D&C Projects Well Integrity Engineer'; Climer, Laurie A Subject: UNDER EVALUATION: Producer U-16 (PTD #2130260) OA exceeded MOASP All, Producer U-16 (PTD#2130260)outer annulus exceeded MOASP on 08/16/2013 with TBG/IA/OA= 1600/1600/1100 psi after being brought online. At this this time the well has been reclassified as Under Evaluation for further diagnostics to confirm the integrity of well barriers. Plan Forward: 1. Ops: Keep well online, monitor until stable 2. DHD: Perform an OA Repressurization Test 3. WIE: Further tests as needed A copy of the wellbore schematic and TIO plot have been included for reference. 1 Wallace, Chris D (DOA) From: AK, D&C Well Integrity Coordinator[AKDCWelllntegrityCoordinator@bp.com] Sent: Saturday, August 17, 2013 8:46 PM To: Regg, James B(DOA); Wallace, Chris D(DOA); AK, OPS GC2 OSM;AK, OPS GC2 Field O&M TL;AK, OPS GC2 Weltpad Lead;AK, OPS Well Pad SW;AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead;AK, RES GPB West Wells Opt Engr;AK, RES GPB East Wells Opt Engr; Derrick, Laurie R Cc: AK, D&C DHD Well Integrity Engineer; AK, D&C Projects Well Integrity Engineer; Climer, Laurie A Subject: UNDER EVALUATION: Producer U-16 (PTD#2130260)OA exceeded MOASP Attachments: U-16 Wellbore Schematic.pdf; U-16 TIO Plot 8-17-13.docx All, Producer U-16(PTD#2130260)outer annulus exceeded MOASP on 08/16/2013 with TBG/IA/OA=1600/1600/1100 psi after being brought online. At this this time the well has been reclassified as Under Evaluation for further diagnostics to confirm the integrity of well barriers. Plan Forward: 1. Ops: Keep well online,monitor until stable 2. DHD: Perform an OA Repressurization Test 3. WIE: Further tests as needed A copy of the wellbore schematic and TIO plot have been included for reference. Please call with any questions. Thank you, Laurie Climer I liter/laic:Jack Disbrow) BP Alaska Well Integrity Coordinator nvi G� a then aloidt WIC Office: 907.659.5102 WIC Email: AKDCWellIntegrityCoordinator@BP.com 1 TREE= 4-1/16"CNV SPJ- Y NOTES: THS WELL HAS ANNULAR VVEI_LHEAD= FMC U -16 SWELL PKRS BUT NO"ANCHOR SWELL PKR". ACTUATOR= BAKER C I PLEASE ENSURE ANY SIGNIRCANT VOLUME OF NITIAL KB.ELEV, 87.07 TREATMENT FLUD(GREATER THAN 20 BBLS)IS INITIAL.BF. 47.14 PUMPED AT SURFACE TEMP GREATER THAN KOP= 1625' - --- --- ' 107'F TO MITIGATE RISK OF REDUCING DH SW ELL Max Angle= 106° 13568' IN PKR PERFORMANCE WELL ANGLE>70°@ Datum MD= 12682 13031'"'CHROME TBG 8,LNR"` Datum TVD= 8800.SS 2204' -I 4-1/2"HES X NP,D=3.813" 20"CONDUCTOR,94#,A-53,D=19.124" 80' GAS LFT MANURES 9-5/8"CSG,40#,L-80 BTC,D=8.835" - 3513' ST MD TVD DEV TYPE VLV LATCH FORT DATE 5 5087 3758 54 KGB2 DCK BOK 0 06/02/13 4 8601 5812 54 KGB2 DMY BK-2 0 06/02/13 ----0 3 10420 7035 36 KGB2 DIM' BK-2 0 06/02/13 2 11574 7981 35 KGB2 DMY BK-2 0 06/02/13 1 12354 8620 35 KGB2 DMY BK-2 0 06/02/13 Minimum ID = 3.813" @ 2204' III 12390• H4-112'HES X NP,D=3.813" 4-1/2" HES X NIPPLE • 12419' _14-1/2"NDPG SINGLE SENSOR SUB,ID=3.864" - v 12452' 7"X 4-1/2"HES TNT PKR,D=3.856" I 12486' ---{4-1/2"HES X NIP,D=3.813" ' 12561' -14-1/2"HES X NP,D=3.813" 12560' --17'X 5"BKR HRD-E ZXPN LTP w/11-TIEBK,D=4.35" 4-1/2"TBG, 12.641,13CR-85 VAM TOP, H 12571' 5 ; 12573' -14-112"WLEG,D=4.00 .0152 bpf,ID-3.958" -ELMD TT NOT LOGGED 7"CSG,26#,L-80 VAM TOP HC --{ 12704' 12584' -27'X 5"BKR FLEX-LOCK HGR,0=4.31" .0383 bpf.0=6.276 12595' -15"X 4-1l2"XO BUSHING,D=3.90' 11.:4 IC4 HES SWILL PACKERS XD SLIDING SLV,ID=3.813" NO SIZE TOP DEPTH MND '� NO DEPTH 0/C DATE 8 4-1/2" 13628 3.958" :nil".c.-... 7 13716 C 05/31/13 7 4-1/2" 13810 3.958" 6 14138 C 05/31/13 6 4-1/2" 13968 3.958" '. :. ... 5 14996 C 05/31/13 5 4-1/2" 14433 3.958" 4 15417 C 05/31/13 4 4-1/2" 14628 3.958" .-. ... 3 15799 C 05/31/13 3 4-1/2" 15892 3.958" ._. .:. 2 16160 C 05/31/13 2 4-1/2" 16029 3.958' ='lia'= 1 17197 C 05/31/13 1 4-1/2" 16319 3.958" mom O=OPEN C=CLOSED III marls 4-1/2"LNR 12.6#,13CR-80 HYD 521, -{ 17402' "ligir .0152 bpf,ID=3.958" 17376' --I4-112"BKR SHIFT TOOL VERFICATION SUB,0=3.88" 3-1/2"LNR 9.2#, 13CR-80 VAM TOP, -I 17441' 17398' --iPBTD(4-1/2"BKR ISOLATION VALVE,D=1.00") .0087 bpf,ID=2.992" 17407 --14-1/2"X 3-1/2'XO,D=2.992" 4-1/2"LNR, 12.6#,L-80 ET, .0152 bpf,ID=3.958' H 17502' ,�.---------• 17441' H3-1/2"X 4-1/2"XO,D=2.992" DATE REV BY COMMENTS DATE REV BY COMMENTS FRUDHDE BAY UNIT 06/05x13 D-25 IMTIAL COMPLETION WELL: U-16 06/07/13 PJC DRLG HO CORRECTIONS PERMIT No:'2130260 06/13/13 MD/PJC DRG DRAFT CORRECTIONS AR No: 50-029-23485-00 06/14/13 MOV PJC INITIAL KB CORRECTION SEC. 18,T11N,R13E, 191'FSL&2465'FEL 06/17/13 RRC/PJC FINAL ODE APPROVAL 06/26/13 JRD/JMD SVVELL PKR SAFETY NOTE BP Exploration(Alaska) Producer U-16(PTD#2130260) TIO Plot 08/17/2013 Met U- MO 1000 • TEp W -.A—OA 2000- GOA • 000A On • • • 1.010• • • • I 094/13 O50113 060111 060113 06115n3 06?L13 06!913 01X6'[3 0]0313 OW] OIT1f3 060113 08/1003 0ar. Hunt, Jennifer L (DOA) From: Lastufka, Joseph N [Joseph.Lastufka@bp.com] Sent: Wednesday, July 31, 2013 9:42 AM To: Hunt, Jennifer L (DOA) Cc: Ramos, Tania ((Udelhoven Oilfield System Services (UOSS)) Subject: PBU U-16/PTD#213-026 Hi Jennifer, Please reference the following well: Well Name: PBU U-16 Permit#: 213-026 API #: 50-029-23485-00-00 Date of Test: 7/29/13 Type of Test: IPT (Initial Production Test) Choke Size: 92 Choke Unit: DEG Production Method: Gas Lifted Duration (Hours Tested): 4 Top Reference (Top Perf MD): 13176' Bottom Reference (Bottom Perf MD): 17197' Tubing Flowing (Pressure): 220 Casing Pressure: 1180 Total Test (Rate f/0, W, G): 536/220/299 24-Hour Rate (0, W, G): 3218/ 1320/ 1794 Gravity (Oil, API): 25 GOR (Gas-Oil Ratio): 557 This well began Production on Method of Operations on this date: July 29, 2013 1 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION . T ; :1 WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1a. Well Status: . ®Oil 0 Gas 0 SPLUG 0 Other 0 Abandoned 0 Suspended lb. Well Class 20AAC 25.105 20AAC 25.110 0 Exploratory 0 Stratigraphic 0 GINJ 0 WINJ 0 WAG 0 WDSPL 0 Other No.of Completions One ' IS Development 0 Service 2. Operator Name: 5.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number: BP Exploration(Alaska) Inc. • 6/5/2013 • 213-026 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 5/1/2013 . 50-029-23485-00-00 4a. Location of Well(Governmental Section): 7. Date T.D.Reached: 14. Well Name and Number: . j Surface: 5/22/2013 . PBU U-16 191'FSL,2465'FEL, Sec. 18,T11 N, R13E, UM Top of Productive Horizon: 8. KB(ft above MSL): 87,07' 15.Field/Pool(s) 1347'FNL,297'FEL, Sec.23,T11 N, R12E, UM GL(ft above MSL): X47' Prudhoe Bay/Prudhoe Bay - Total Depth: 9.Plug Back Depth(MD+TVD) 4829'FNL,2615'FEL, Sec.23,T11 N, R12E, UM 17398' 8922' ' 4b. Location of Well(State Base Plane Coordinates,NAD; 10.Total Depth(MD+TVD) 16. Property Designation: Surface: x- 631535 y- 5960764 Zone- ASP417504' 8909' ' ADL 028283&047451 TPI: x- 623503 y- 5959089 Zone- ASP4 * 11.SSSV Depth(MD+TVD) 17. Land Use Permit: Total Depth:x- 621244 y- 5955570 Zone- ASP4 None 18.Directional Survey: ®Yes 0 No 19.Water depth,if offshore: 20. Thickness of Permafrost(TVD): (Submit electronic and printed information per 20 MC 25.050) N/A ft MSL 1952' 21.Logs Obtained (List all logs here and submit electronic and printed information per 20 MC 25.071): 22.Re-Drill/Lateral Top Window MD/TVD: MWD/GR, MWD/GR/RES, MWD/GR/RES/NEU/DEN N/A 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT.PER FT. GRADE Top BOTTOM Top BOTTOM SIZE CEMENTING RECORD PULLED 20" 91.5# A-53 41' 121' 41' 121' 42" 260 sx Arctic Set(Approx.) I 9-5/8" 40# L-80 41' 3513' 41' 2848' 12-1/4" ,2340 sx LiteCrete,416 sx Class'G' 7" 26# L-80 38' 12704' 38' 8906' 8-3/4" 834 sx LiteCrete, 136 sx Class'G' 4-1/2" 12.6# 13Cr80 12560' 17502' 8789' 8909' 6-1/8" Uncemented Sliding Sleeves,Swell Packers 24. Open to production or injection? IS Yes 0 No 25. TUBING RECORD If Yes,list each interval open SIZE DEPTH SET(MD) PACKER SET(MD/TVD (MD+TVD of Top&Bottom;Perforation Size and Number): ) _ 4-1/2"Sliding Sleeves w/Swell Packers 4-1/2", 12.6#, 13Cr85 12573' 12452'/8701' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. 13716' 9038' 14138' 9026' WAS HYDRAULIC FRACTURING USED DURING COMPLETION?❑Yes ®No 14996' 9026' ! DEPTH INTERVAL(MD AMOUNT AND KIND OF MATERIAL USED 1579' 9021' • a 15799' 9022' L--- . `�' 2200' Freeze Protect w/82 Bbls Diesel _.�. ,� 16160' 9013' 17197' 8940' II 27. PRODUCTION TEST Date First Production Method of Operation(Flowing,Gas Lift,etc Not on Production N/A Date of Test Hours Tested Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Test Period Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 24-Hour Rate 28. CORE DATA Conventional Core(s)Acquired? 0 Yes ®No Sidewall Core(s)Acquired? 0 Yes ®No ' If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and presence of oil,gas or water (submit separate sheets with this form,if needed). Submit detailed descriptions,core chips,photographs and laboratory analytical results per 20 MC 250.07{r, RBDMS JUL - 3 201-3 None Form 10-407 Revised 10/2012 I r�� j� /���/^ CONTINUED ON REVERSE /�// Submit Original Only V 1 / 29. GEOLOGIC MARKERS(List all formations and i , rkers encounter 30. FORMATION TESTS NAME MD TVD Well Tested? 0 Yes ®No Permafrost Top 41' 41' If yes,list intervals and formations tested,briefly summarizing test results. Attach separate sheets to this form,if needed,and submit Permafrost Base 2080' 1993' detailed test information per 20 AAC 25.071. Ugnu 5234' 3844' None Schrader Bluff N 7431' 5128' Schrader Bluff 0 7691' 5283' Base of Schrader Bluff 8287' 5630' HRZ 10309' 6945' LCU/Miluveach 10646' 7220' Kingak 11090' 7583' Sag River 12702' 8904' Shublik 12733' 8929' Sadlerochit/Zone 4B 12835' 9007' Zone 4/Eileen(Invert) 17474' 8913' Formation at Total Depth: Eileen(From Base) 17474' 8913' 31.List of Attachment Property Plat,Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys 32.I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact: Ryan Ciolkosz,564-5977 Email: Ryan.Ciolkosz@bp.com Printed Name: Title: Drilling Technologist Joe Lastu Signature: Phone 564-4091 Date: / /1/13 INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item 1 a: Classification of Service Wells: Gas Injection,Water Injection,Water-Alternating-Gas Injection,Salt Water Disposal,Water Supply for Injection, Observation,or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI(Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits(ex: 50-029-20123-00-00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval(multiple completion),so state in item 1,and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing,Gas Lift,Rod Pump,Hydraulic Pump,Submersible,Water Injection,Gas Injection,Shut-In,or Other(explain). Item 28: Provide a listing of intervals cored and the corresponding formations,and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation,and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 10/2012 Submit Original Only TREE I- 4-1/16"CNV U _1 WELLHEAD= FMC SAFETY NOTES: WELL ANGLE>70°@ 13031' '• CHROME TBG 8 LNR***= BAKER C "' IMTIAL KB.ELEV 87.07 INMAL.BF.ELEV 47.14 KOP= 1625' 2204' -�4-1l2"HES X NP,D=3.813" Max Angle= 106° @ 13568' Datum MD= 12682 Datum TVD= 8800.SS I = GAS UFT MANDRELS 20"CONDUCTOR94#,A-53,D=19.124" - 80' ST MD TVD DEV TY FE V LV LATCH PORT DATE 9-5/8"CSG,40#,L-80 BTC,D8.835" -I 3513' 5 5087 3758 54 KGB2 DCK BEK 0 06/02/13 4 8601 5812 54 KGB2 DMY BK-2 0 06/02/13 1110 3 10420 7035 36 KGB2 DMY BK-2 0 06/02/13 2 11574 7981 35 KGB2 DMY BK-2 0 06/02/13 1 12354 8620 35 KGB2 DMY BK-2 0 06/02/13 Minimum ID =3.813" @ 2204' 12390' -�a-v =3.813" 2"HES X NP,D 4-1/2" HES X NIPPLE 12419' _14-1/2"NDPG SINGLE SENSOR SUB,D=3.864" ic 12452' _17"X 4-1/2"HES TNT PKR,ID=3.856" 12486' -14-1/2"HES X NP,D=3.813" 12561' H4-1/2"HES X NP,D=3.813" 12560' -17'X 5"BKR IRD-E ZXPN LTP w/11-TEBK,D=4.35" 4-1/2"TBG, 12.6#,13CR-85 VAM TOP, H 12571' 12573' H4-1/2"VVLEG,D=4.00 .0152 bpf,ID-3.958" -ELMD TT NOT LOGGED 7'CSG,26#,L-80 VA TOP HC -{ 12704' 12584' -7'X 5"BKR FLEX-LOCK HGR,D=4.31" .0383 bpf.D=6.276 12595' -15"X 4-1/2"XO BUSHNG,D=3.90' FPB SWELL PACKERS us _ XD SLIDING SLV,ID=3.813" NO SIZE TOP DEPTH MN D NO DEPTH OIC DATE 8 4-1/2" 13628 3.958" ._+ .. 7 13716 C 05/31/13 7 4-1/2" 13810 3.958" 6 14138 C 05/31/13 6 4-1/2" 13968 3.958" ... - 5 14996 C 05/31/13 5 4-1/2" 14433 3.958" NB own 4 15417 C 05/31/13 4 4-1/7 14628 3.958" .. 3 15799 C 05/31/13 3 4-1/2" 15892 3.958" 1.7.1 = 2 16160 C 05/31113 2 4-1/2" 16029 3.958" inws• 1 17197 C 05/31/13 1 4-1/2" 16319 3.958" '•Illllli��'' mom• O=OPEN C=CLOSED --_ --_ 4-1/2"LNR 12.6#,13CR-80 HYD 521, --I 17402' '-"=. .0152 bpf,ID=3.958" 17376' --{4-1/2"BKR SHFT TOOL V ERFICATION SUB,ID=3.88" 3-1/2'LNR 9.2#,13CR-80 VAM TOP, - 17441' 17398' -{PBTD(4-1/2"BKR ISOLATION VALVE,D=1.00') .0087 bpf,ID=2.992" \ 17402' -14-1/2"X 3-1/2"XO,ID=2.992' 4-1/2"LNR, 12.6#,L-80 BT,.0152 bpf,D=3.958" -{ 17502' �\ 17441' -{3-112"X 4-1/2"XO,D=2.992" S N45 DATE REV BY COMENTS DATE REV BY COMMENTS PRIDHOE BAY UNIT 06/05/13 025 INTIAL COMPLETION WELL: U-16 06/07/13 PJC DRLG HO CORRECTIONS FERMI No:'2130260 06/13/13 MD/PJC DRLG DRAFT CORRECTIONS AR No: 50-029-23485-00 06/14/13 MID/PJC MAL KB CORRECTION SEC. 18,711N,R13E, 191'FSL 8 2465'FEL 06/17/13 RRC/PJC ANAL ODE APPROVAL BP Exploration(Alaska) M PAD `, r ..ti . t: 1 1 w \ w - \ 1 \ �� :14_ _ N PAO 1 (J �' r%M1 I 1 1 Z t'. w-} MK PAD 1 ' G'pO CL ' r _ ,, 1 `•„..,---,r,1 ERVICE ' 1 '''`-.-A,_ CITY 0C2 1 ( 1 — N — LEGEND 1 I + AS-BUILT CONDUCTOR ty PROJECT 1 • EXISTING WELL Al U PAD 1 LIGHT POLE � � I r.(t' — VICINITY MAP N.T.S. 1 1 _ I I 11 l m l II ! I �; ; I I 0‘0%%1111111 1 1 I — J �� -,OF A4 psi 4 1 ■ A • III /' ;dr 11 13 12: M 6 II �...'.% : AM a 0 0 111 I I iticr el `- 4 NI a 7 I s° °° go 1 •14 it; "ichard . Allison/ .• • 3.08 3■ ■ 8 `Ii Fes•° �` • 1 U-16+ ■to 1 1■ SURVEYOR'S CERTIFICATE I HEREBY CERTIFY THAT I AM •..._ PROPERLY REGISTERED AND LICENSED TO PRACTICE LAND SURVEYING IN l— — — — l _ — — _ — THE STATE OF ALASKA AND THAT I THIS AS–BUILT REPRESENTS A SURVEY MADE BY ME OR UNDER MY DIRECT ' SUPERVISION AND THAT ALL 1 DIMENSIONS AND OTHER DETAILS ARE / 1 CORRECT AS OF APRIL 6, 2013. / / U—PAD NOTES: 1. ALASKA STATE PLANE COORDINATES ARE ZONE 4, NAD27. GRAPHIC SCALE 2. BASIS OF LOCATION IS U PAD MONUMENTS U-1. 3. BASIS OF ELEVATION IS U PAD PLANT MONUMENTS. 0 150 300 600 4. ELEVATIONS ARE BP MEAN SEA LEVEL DATUM. I I 5. GEODETIC POSITIONS ARE NAD27. ( IN FEET ) 6. PAD MEAN SCALE FACTOR IS: 0.9999197 1 inch =300 ft. 7. DATE OF SURVEY: APRIL 6, 2013. 8. REFERENCE FIELD BOOK: NS13-20 PGS. 1-6. LOCATED WITHIN PROTRACTED SECTION 18, T. 11 N., R. 13 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC GRAVEL LANDING SECTION NO. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) PAD ELEV. RING ELEV. OFFSETS U-16 Y=5,960,764.14 N= 944.93 7018'03.200" 70.3008889' 47.0' 47.14' 191' FSL X= 631,534.51 E= 1,000.13 148'56'04.656" 148.9346266' 2,465' FEL DRAWN: EpWOLF . irtiarta oECAMP bp DATE: „I 4f07/13 DRAWING: FRB18 WOU 01 SHEET JOB NO: WOA U—PAD FOR INFORMATION RKB SCALE: AS-BUILT CONDUCTOR LOCATION 1• .. 300' WELL U-16 1 OF t 00 4i07/13 ISSUED NO. OA1E REVISION BY O« BP AMERICA LOT / FIT Summary Well Name: U-16 Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) (ppg) 05/07/13 LOT 3,512.00 2,851.01 9.40 983.00 2,375.19 16.04 05/17/13 FIT 12,704.00 8,920.51 8.60 1,257.00 5,242.28 11.31 Page 1 of 1 North America ALASKA BP Page 1 of 28 Operation Summary Repo Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/lime:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 4/22/2013 18:00 - 00.00 16.00 MOB P PRE RIG DOWN ON Z-71,PREPARE FOR MOVE TO U-16 4/23/2013 00:00 - 00:00 24.00 MOB N WAIT 86.27 PRE PREPARE RIG FOR MOVE TO U-16, WAIT ON TRUCKS TO BECOME AVAILABLE. INSTALL ROTATING DEAD LINE ANCHOR. PREPARE MUD PUMPS FOR ANNUAL INSPECTION. WELDER INSTALL WORK PLATFORMS ON BOP CRADLE. EXECUTE MISCELLANEOUS SUMMER MAINTENANCE ITEMS. 4/24/2013 00:00 - 00:00 24.00 MOB N WAIT 86.27 PRE PREPARE RIG FOR MOVE TO U-16, WAIT ON TRUCKS TO BECOME AVAILABLE -WORK ON PM ITEMS GENERAL EQUIPMENT 'AND RIG MAINTENANCE 4/25/2013 00:00 - 00:00 24.00 MOB N WAIT 86.27 PRE PREPARE RIG FOR MOVE TO U-16, WAIT ON 1'TRUCKS TO BECOME AVAILABLE -WORK ON PM ITEMS GENERAL EQUIPMENT AND RIG MAINTENANCE 4/26/2013 00:00 - 00:00 24.00 MOB N WAIT 86.27 PRE PREPARE RIG FOR MOVE TO U-16, WAIT ON TRUCKS TO BECOME AVAILABLE -WORK ON PM ITEMS GENERAL EQUIPMENT - AND RIG MAINTENANCE 4/27/2013 00:00 - 07:00 7.00 MOB N WAIT 86.27_ PRE PREPARE RIG FOR MOVE TO U-16, WAIT ON TRUCKS TO BECOME AVAILABLE -WORK ON PM ITEMS,GENERAL EQUIPMENT AND RIG MAINTENANCE. 07:00 - 12:00 5.00 MOB P PRE BEGIN RIG DOWN,PREP DERRICK FOR LOWERING,PIN TDS/BLOCKS IN TRAVEL POSITION. 12:00 - 20:00 8.00 MOB P PRE LOWER AND SECURE DERRICK.TWO UNWEIGHTED SOWS ARRIVED. '-PULL PIPESHED FROM UNDER SUB. -HOOK POWER AND PUMP MODULES TO TRUCKS AND PARK ON EDGE OF PAD. 20:00 - 21:00 1.00 MOB N WAIT 86.27 PRE WAIT ON TWO WEIGHTED SOWS TO ARRIVE TO BEGIN MOVE. 21:00 - 00:00 3.00 MOB N WAIT 86.27 PRE WAIT ON MATTING TO BE SET ON KUPARUK BRIDGES,ONLY ONE LOADER BEING UTILIZED FOR OPERATION. 4/28/2013 10:00 - 17:00 7.00 MOB P PRE MOVE SUB AND PIT MODULES FROM Z PAD TO U-16 17:00 - 19:00 2.00 MOB N WAIT 86.27 PRE j WAIT ON SECURITY ESCORT TO ARRIVE. 19:00 - 21:00 2.00 MOB N WAIT 86.27 PRE CAT HAULER TRACTOR ENGINE OVERHEATED. WAIT ON REPLACEMENT CAT HAULER TRACTOR TO ARRIVE. 21:00 - 00:00 3.00 MOB P PRE MOVE PIPE AND CASING MODULES FROM Z-PAD TO U-16 00:00 - 03:30 3.50 MOB P 86.27 PRE MOVE POWER AND PUMP MODULES F/Z-71 TO U-16 -PREP SUB AND PIT MODULES -INSTALL JEEP ON SUB. 03:30 - 05:30 2.00 MOB P 86.27 PRE ROAD TRUCKS BACK TO Z PAD FROM U PAD. HOOK UP TRUCKS AND PREPARE TO MOVE PIT AND SUB MODULES TO U PAD. Printed 7/1/2013 4:51.28PM North America-ALASKA-BP Page 2 of 28, Operation Summary Report - .. . Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM I Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual t87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 05:30 - 10:00 4.50 MOB N WAIT 86.27 PRE CH2MHILL ROAD GRADER LEAKED GLYCOL ON SPINE ROAD BETWEEN EAST KUPARUK RIVER BRIDGE AND N PAD ACCESS ROAD. WAITED ON Z PAD WITH TRUCKS HOOKED UP TO PIT AND SUB MODULES AND READY TO MOVE WHILE SPILL RESPONSE TEAM CLEANED UP SPILL ON SPINE ROAD. CONTINUED CLEARING RIG MATS FROM AROUND Z-71 AND PREPPING ANCILLARY EQUIPMENT FOR TRANSPORT TO U PAD WITH RIG LOADER. 4/29/2013 00:00 - 03:30 3.50 MOB P PRE SPOT SUB OVER WELL -WALK PIPE AND CASING MODULES INTO POSITON. 03:30 - 09:00 5.50 MOB P PRE SPOT PIPE SHED AND PUMPS,SHIM SAME 09:00 - 12:00 3.00 MOB P PRE RAISE CATTLE CHUTE,WALK POWER COMPLEX INTO POSITION -WORK ON INTERCONNECTS -PREP DERRICK TO SCOPE 12:00 - 00:00 12.00 MOB P PRE WALK MODULES INTO PLACE AND HOOKUP INTERCONNECTS UNPIN TDS AND BRIDLE UP -PJSM,SCOPE DERRICK -RD SCOPING LINES AND BRACKETS -INSTALL KELLY HOSE -CALIBRATE BLOCK HEIGHT,HOOKLOAD -NOTIFIED AOGCC(JEFF JONES)OF IMPENDING DIVERTER FUNCTION TEST PLANNED FOR 19:00-HRS.ON 4/30. 4/30/2013 00:00 - 03:00 3.00 RIGU r PRE ACCEPT RIG @ 00:01 HRS -N/U SURFACE RISER&ANNULAR PREVENTER 03:00 - 11:30 8.50 RIGU P PRE INSTALL FLOW BOX,FLOW NIPPLE,FLOW LINE,HOLE FILL LINE&JET LINES -N/U DIVERTER LINE INSTALL PS-21 SLIPS.LOAD 4"DP INTO SHED &PREP TO P/U. -FUNCTION TEST PIT EQUIPMENT. BRING ON FLUID TO PITS. 11:30 - 13:00 1.50 BOPSUR P PRE FUNCTION TEST DIVERTER SYSTEM 13:00 - 14:00 1.00 RIGU P PRE HOLD PRE-SPUD WITH TOOL PUSHER,MI ENGR,SLB DD&DAY RIG CREW -DISCUSS WELL PLAN,TARGETS&RISKS 14:00 - 14:30 0.50 RIGU P PRE HOLD RIG EVACUATION DRILL -ALL HANDS ACCOUNTED FOR AT SAFE BREIFING AREA IN 2 MIN 45 SEC 14:30 - 18:00 3.50 RIGU P PRE P/U 4"DP SINGLES FROM SHED&M/U 35 STANDS&STAND BACK IN DERRICK PLANNING MEETING: -DRILLING SURFACE,CASING&CEMENTING -ATTENDED BY BP,DDI,SLB CEMENT,CH2& MI-SWACO 18:00 - 19:00 1.00 BOPSUR P PRE CONDUCT DIVERTER/KNIFE VALVE TEST -ANNULAR CLOSED IN 38 SECONDS -KNIFE VALVE FULLY OPEN IN 12 SECONDS -TEST WITNESS WAIVED BYAOGCC REP JEFF JONES Printed 7/1/2013 4.51:28PM North America-ALASKA-BP �.�.;�. ,r ;,� Page 3 of 28 044014$1:1,1 rerrnIono, Operation Summary Report , Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:00 - 19:30 0.50 BOPSUR P PRE PERFORM PRESSURE TEST ON SURFACE HIGH PRESSURE MUD LINES TO 3,500 PSI -GOOD TEST 19:30 - 20:00 0.50 RIGU P PRE CALIBRATE SLB BLOCK HEIGHT 20:00 - 00:00 4.00 RIGU P PRE P/U 4"DP FROM PIPESHED&M/U STANDS -HELD D1 DRILL CRT 1 MIN 30 SEC 5/1/2013 00:00 - 05:30 5.50 RIGU P SURF CONT P/U 4"DP AND STAND BACK IN DERICK -PRE-SPUD MEETING WITH NIGHT RIG CREW 05:30 - 08:00 2.50 RIGU P SURF PREPARE BHA#1 AND HANDLING EQUIPMENT 08:00 - 08:30 0.50 RIGU P SURF RIG EVACUATION DRILL AND AAR 08:30 - 10:30 2.00 RIGU P SURF P/U BHA#1 AS PER DD.RIH AND TAG AT 120' MD. 10:30 - 12:00 1.50 DRILL P SURF DRILL 12-1/4"SURFACE HOLE FROM 120'MD TO 212'MD(212'TVD) -500 GPM,490 PSI ON/480 PSI OFF -40 RPM,5K WOB -P/U=50 KLBS,S/O=58 KLBS MUD WEIGHT:8.8 PPG IN,8.8 PPG OUT 12:00 - 19:30 7.50 DRILL P SURF DRILL 12-1/4"SURFACE HOLE FROM 212'MD TO 585'MD(585'TVD) -502 GPM,720 PSI ON,680 PSI . -40 RPM,1-3K TORQUE ON,1-3K TORQUE OFF,13K WOB -P/U=90K,S/O=70K,ROT WT=86K -MUD WEIGHT:8.8 PPG IN,8.8 PPG OUT RUNNING GYRO SURVEYS AT 494'MD 19 30 - 20:30 1.00 DRILL P SURF MONITOR WELL. POOH FROM 585'MD TO 157'MD -MONITOR WELL VIA TRIP TANK 20:30 - 22:00 1.50 DRILL P SURF PJSM WITH SLB DD. UD BHA#1 -BIT CHECK: (1-1). IN GAUGE _ 22:00 - 00:00 2.00 DRILL P SURF M/U BHA#2 WITH SAME 12-1/4"BIT,MWD,5" HWDP,AND JARS 5/2/2013 00:00 01:30 1.50 DRILL P SURF RIH FROM 408'TO 425'. ENCOUNTERED TIGHT HOLE AT 425'. UTILIZED"TIGHT SPOT' TRIPPING PRACTICES. FIRST ATTEMPTED TO WORK THOUGHT TO SPOT WITHOUT PUMPING AND STACKING WEIGHT ON OBSTRUCTION. SINCE HOLE WAS VERTICAL, DID NOT ATTEMPT TO ORIENT MOTOR 180 DEGREES AND WORK THROUGH TIGHT SPOT. PULLED ABOVE OBSTRUCTION. APPLIED PUMPS AT+500-GPM AND 800-PSI. WORKED PAST TIGHT SPOT. RIH AND WASHED TO BOTTOM AT 585'MD. ENCOUNTERED-10'OF GRAVEL FILL BEFORE BOTTOM. Printed 7/1/2013 4.51:28PM North America-ALASKA-BP Page 4 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date. X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:OOAM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 01:30 12:00 10.50 DRILL P SURF DRILL 12-1/4"SURFACE HOLE FROM 585'MD TO 1,197'MD(1,192'TVD) -545 GPM,1,380 PSI ON,1,160 PSI OFF -40 RPM,4-5K TORQUE ON,2K TORQUE OFF, 22K WOB -P/U=83K,S/O=91K,ROT=86K -SURVEY EVERY-95 FT ACTUAL ROTATE TIME=1.95 HRS ACTUAL SLIDE TIME=3.06 HRS '-BACK REAM 90 FT PRIOR TO CONNECTIONS -MUD WEIGHT:9.0 PPG IN,9.9 PPG OUT -INSTALL FLOW METER AT 935'MD -GOOD SURVEYS AT 930'SURVEY DEPTH. RELEASE GYRO AT 1,128'MD. 12:00 - 14:00 2.00 DRILL P SURF DRILL 12-1/4"SURFACE HOLE FROM 1,197'MD TO 1,329'MD(1,304'TVD) -553 GPM,1,310 PSI ON,1,230 PSI OFF -40 RPM,3-4K TORQUE ON,2K TORQUE OFF, 18K WOB -P/U=86K,S/O=92K,ROT=87K -SURVEY EVERY-95 FT -ACTUAL ROTATE TIME=0.22 HRS -ACTUAL SLIDE TIME=1.22 HRS •-BACK REAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT:9.0 PPG IN,9.9 PPG OUT TROUBLE SLIDING AND SLOW DOWN IN ROP. -15'IN ONE HOUR DECISION MADE TO TOH FOR BIT CHANGE. 14:00 - 16:30 2.50 DRILL P SURF BLOW DOWN TOP DRIVE.MONITOR WELL- STATIC. POOH ON ELEVATORS FROM 1,329' MD TO 937'MD -25K OVERPULLAT 1,045'MD -S/O BELOW&PULL BACK THOUGH-NO PROBLEMS -MONITOR WELL VIA TRIP TANK 16:30 - 18:00 1.50 DRILL P SURF STAND BACK 4"&5"HWDP,JARS,AND DRILL COLLARS. CHECK MOTOR&MWD ORIENTATION ON WAY OUT.MILK MOTOR AND BREAK BIT. -BIT GRADED 2-5-WT-A-E-4-FC-DHP 1/4"UNDER GUAGE 18:00 - 19:00 1.00 DRILL P SURF C/O BIT TO NEW HUGHES VM-3 BIT.RIH WITH BHA#3 TO 937'MD -S/N-5192142 19:00 - 19:30 0.50 DRILL P SURF RIH WITH DP FROM DERRICK FROM 937'MD TO 1,329'MD -TOOK 20K AT 1045',DID NOT HAVE TO WORK THROUGH. Printed 7/1/2013 4.51:28PM North America-ALASKA-BP Page 5 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UW: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:30 - 00:00 4.50 DRILL P SURF DRILL 12-1/4"SURFACE HOLE FROM 1,329'MD TO 1,504'MD(1,489'TVD) -553 GPM,1,562 PSI ON,1,475 PSI OFF -40 RPM,5K TORQUE ON,2K TORQUE OFF, 18K WOB -P/U=96K,S/O=92K,ROT=87K -SURVEY EVERY-95 FT -ACTUAL ROTATE TIME=0.21 HRS -ACTUAL SLIDE TIME=1.85 HRS -BACK REAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT:9.0 PPG IN,9.9 PPG OUT RATTY DRILLING/SLIDING FROM 1,329'MD TO 1,340'MD DIFFICULTY SLIDING SIMILAR TO PREVIOUS BIT RUN,INCREASED GPM F/500 TO 550 AND ROTATED 5'.CIRCULATED UP EXCESS WOOD PIECES AFTER BREAKING THROUGH BAD SECTION AT 1,340' 5/3/2013 00:00 - 12:00 12.00 DRILL P SURF DRILL 12-1/4"SURFACE HOLE FROM 1,504'MD TO 2,806'MD(2,445'TVD) -40 RPM,9KTQON/4KTQOFF '-30KWOB PUMP RATE 545 GPM,2,110 PSI ON BTM, 1,890 PSI OFF BTM -P/U=105 K,S/0=88 K,ROT=94K -AST=4.25,ART=2.95,ADT=7.2,TOTAL BIT HRS=9.3 -JARS=9.3 12:00 - 21:30 9.50 DRILL P SURF DRILL 12-1/4"SURFACE HOLE FROM 2,806'MD V O TD AT 3,522'MD(2,853'TVD) -40 RPM,7KTQON/5KTQOFF -25 K WOB -PUMP RATE 545 GPM,2,240 PSI ON BTM, 1,972 PSI OFF BTM -MW 9.4 IN/9.4 OUT -P/U=114 K,5/0=88 K,ROT=95 K -AST=1.21,ART=2.98,ADT=4.19,TOTAL BIT HRS=13.49 -JARS=20 21:30 - 23:00 1.50 DRILL P SURF CIRCULATE BOTTOMS-UP 3 TIMES -650 GPM,2,560 PSI -60 RPM,5K TORQUE -ROTATE&RECIPROCATE FROM 3,522'MD TO 3,405'MD 23:00 - 00:00 1.00 DRILL P SURF MONITOR WELL FOR 10 MINUTES:STATIC -MUD WEIGHT:9.4 PPG IN,9.4 PPG OUT POH ON ELEVATORS FOR SHORT TRIP FROM 3,522'MD TO 2,933'MD P/U=110K,S/O=80K -NO TIGHT SPOTS ENCOUNTERED 5/4/2013 00:00 - 01:00 1.00 DRILL P I SURF CONT POH ON ELEVATORS FOR SHORT TRIP FROM 2,933'MD TO 1,310'MD -NO TIGHT SPOTS ENCOUNTERED 01:00 - 02:00 1.00 DRILL P SURF RIH WITH 12-1/4"DRILLING BHA FROM 1,317' MD TO 3,522'MD -RIH ON ELEVATORS NO TIGHT SPOTS ENCOUNTERED Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 6 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date. X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 02:00 - 05:30 3.50 DRILL P SURF CIRCULATE AND CONDITION MUD -DUMP AND DILUTE TO CONDITION MUD. RHEOLOGIES OUT OF SPEC. -540 GPM,1,860 PSI -15 RPM,3K TORQUE 05:30 - 06:00 0.50 DRILL P SURF 1 MONITOR WELL FOR 10 MINUTES:STATIC -MUD WEIGHT:9.4 PPG IN,9.4 PPG OUT L/D SINGLE AND B/D TOP DRIVE 06:00 - 07:30 1.50 DRILL I P SURF POH ON ELEVATORS FROM 3,522'MD TO 937' MD -MONITOR DISPLACEMENT VIA PITS 2&3 -WORKED AND WIPED TIGHT SPOTS AT AT 750',1150',2100',2500'&3,300'N 07:30 - 08:30 1.00 DRILL P SURF POH&STAND BACK HWDP FROM 937'MD TO 192'MD ---------- 08:30 - 10:30 2.00 DRILL P SURF L/D BHA#3 AS PER SLB DD FROM 192'MD TO SURFACE -BIT GRADE 1-4-FC-2-E-1-WT-TD -MOTOR STABILIZER&NM STABILIZERS IN GUAGE 10:30 - 11:30 1.00 CASING P SURF R/U CASING EQUIPMENT 11:30 - 12:00 0.50 CASING P SURF PERFORM DUMMY RUN WITH HANGER 12:00 - 00:00 12.00 CASING P SURF RUN 9-5/8",40#,L-80 BTC CASING TO 2,847' MD -CHECK FLOATS-GOOD -USE BEST-O-LIFE PIPE THREAD COMPOUND -RUN 8 FLOATING CENTRALIZERS ON JOINTS 3-10 J/ -BREAK CIRCULATION EVERY 10 JOINTS -P/U=132K,S/O=100K -CIRCULATE 30 MIN AT 1075'WITH 5 BPM, 110 PSI WHILE RECIPROCATING PIPE 30' TAKING 30K WEIGHT AT 2,460'MD, CIRCULATE FOR 30 MIN,4 BPM,ICP-190 PSI, FCP-150 PSI RECIPROCATE PIPE 30' -REPLACE 9 TOTAL JOINTS DUE TO BAD BAD PIN THREADS -C/O TWO COLLARS. 5/5/2013 06:00 - 10:00 4.00 CASING P SURF CIRCULATE PRIOR TO CEMENTING -STAGE UP TO CEMENTING RATE IN 1 BBL INCREMENTS TO FINAL CIRCULATING RATE OF 7 BPM @ 3 BPM,235 PSI,18%RETURN FLOW @ 4 BPM,220 PSI,20%RETURN FLOW @ 5 BPM,250 PSI,25°%RETURN FLOW @ 6 BPM,263 PSI,25%RETURN FLOW @ 7 BPM,300 PSI,28"/RETURN FLOW -CONDITION MUD TO 9.4 PPG,23-PV,16-YP -INITIAL PRESSURE AT CEMENTING RATE: 283 PSI -FINAL PRESSURE AT CEMENTING RATE:155 PSI -CIRCULATE TOTAL 9 BOTTOMS UP -RECIPROCATE PIPE 10'STROKES -ZERO MUD LOSSES DURING CIRCULATION Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 7 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 00:00 - 06:00 6.00 CASING P SURF RIH WITH 84 JOINTS OF 9-5/8",40#,L-80 BTC CASING TO 3,512' -USE BEST-O-LIFE PIPE THREAD COMPOUND -RUN 8 FLOATING CENTRALIZERS ON JOINTS 3-10 -BREAK CIRCULATION EVERY 10 JOINTS -P/U=140K,S/O=112K -REPLACE 23 TOTAL JOINTS DUE TO BAD PIN THREADS -C/O TWO COUPLINGS -LOST TOTAL 21 BBLS DURING TIH 05:00 GAVE AOGCC 24 HR NOTIFICATION FOR UPCOMING INITIAL BOP TESTING" 10:00 - 15:30 5.50 CASING P SURF CEMENT 3513'SURFACE CASING AS FOLLOWS: -FILL LINES WITH 10 BBL MUDPUSH II AND PRESSURE TEST TO LOW 250 FOR 5 MINUTES HIGH 4500 PSI FOR 5 MIN -PUMP REMAINING 90 BBLS OF 10 PPG MUDPUSH II SPACER AT 5 BPM,130 PSI •-RELEASE BOTTOM PLUG PUMP 771 BBLS OF 11.0 PPG LITECRETE LEAD CEMENT AT 5 BPM,EXCESS VOLUME 500%(YIELD 1.85 CU.FT/SK) PUMP 86 BBLS OF 15.8 PPG CLASS G TAIL AT 10 BPM TO CATCH PLUG SLOW TO 5 BPM, EXCESS VOLUME 500%(YIELD 1.16 C U.FT/SK) -DROP TOP PLUG -RECIPROCATED PIPE 12'AT SURFACE WHILE PUMPING CEMENT AT 5 BPM PERFORM DISPLACEMENT WITH RIG PUMPS AND 9.4 PPG DRILLPLEX MUD PER SLB CADE. -246 BBLS DISPLACED. INITIAL DISPLACEMENT RATE'10 BPM TO CATCH CEMENT AT 35-BBLS AWAY. THEN REDUCED RATE TO 6 BPM:FCP 800 PSI 24%RETURN FLOW. -REDUCE RATE AT 236 BBLS AWAY TO 2 BPM PRIOR TO PLUG BUMP:FINAL CIRCULATING PRESSURE 800 PSI -BUMP PLUG AND INCREASE PRESSURE TO 1344 PSI,CHECK FLOATS-GOOD. CIP- 15:15-HRS. -TOTAL DISPLACEMENT VOLUME 256 BBLS (MEASURED BY STROKES AT 94%RIG PUMP EFFICIENCY) -NO RECIPROCATION DURING DISPLACEMENT -80 BBLS OF CEMENT RETURNED TO SURFACE TOTAL LOSSES FROM CEMENT EXIT SHOE TO CEMENT IN PLACE:0 BBLS 15:30 - 17:30 2.00 CASING P SURF RD SLB CEMENTING EQUIPMENT FLUSH CEMENTING EQUIPMENT 17:30 - 18:00 0.50 CASING P SURF CLEAN AND CLEAR RIG FLOOR Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 8 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project.Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 18:00 - 22:00 4.00 CASING P SURF NIPPLE DOWN SURFACE ANNULAR,RISER AND DIVERTER TO REMOVE DIVERTER LINE. CLEAN OUT CEMENT MANIFOLD VALVES. SIMOPS=COMPLETE MAST INSPECTION VIA NOV REP. 22:00 - 00:00 2.00 CASING P SURF N/U 11"TUBING SPOOL TO CASING HEAD AS PER FMC REP. N/U DSA,SPACER SPOOL& RISER. FMC PRESSURE TEST METAL TO METAL SEAL ON CASING HEAD TO 1000-PSI FOR 5 MINUTES PER FMC PROCEDURE. PRESSURE TEST CHART ATTACHED. -START NU OF BOP • 5/6/2013 00:00 - 02:30 I 2.50 CASING P SURF N/U BOPE -INSTALL DSA,SPACER SPOOL,RISER,BOP STACK -CONNECT CHOKE AND KILL LINES • 02:30 - 03:00 0.50 CASING P SURF TEST WELL HEAD METAL TO METAL SEAL TO 250 PSI FOR 5 MINS,1,000 PSI FOR 15 MINS -GOOD TEST 03:00 - 09:00 6.00 CASING P SURF N/U BOPE AND R/U TEST EQUIPMENT -INSTALL FLOW LINE AND HOLE FILL LINE, •FLOW BOX AND SEAL,FLOW NIPPLE.ALL CONNECTIONS TORQUED. •-INSTALL BELL GUIDE ON TOP DRIVE,M/U SAFETY VALVES.C/O SAVER SUB.SIMOPS C/O VALVE IN TANK ROOM -R/U PRESSURE TEST EQUIPMENT 09:00 - 12:30 3.50 CASING P SURF TEST BOPE TO 250 PSI LOW,3,500 PSI HIGH FOR 5 MINUTES EACH -TEST WITH 4"TEST JOINT -ALL TESTS CHARTED,SEE ATTACHED BOP TEST CHARTS -TEST WITNESSED BY AOGCC REP CHUCK . _ 1 _ SHEVE 12:30 - 14:00 1.50 CASING P SURF R/D TESTING EQUIPMENT,PULL TEST PLUG &SET 9-3/4"WEAR BUSHING 14:00 - 14:30 0.50 CASING P SURF CLEAN&CLEAR RIG FLOOR 14:30 - 16:30 2.00 CASING P SURF P/U BHA#4 AS PER SLB DD TO 663'MD 16:30 19:30 3.00 CASING P SURF P/U DOUBLES FROM PIPE SHED FROM 663' MD TO 3,357'MD -SHALLOW HOLE TEST AT 1640'W/400 GPM, 1030 PSI-GOOD TEST 19:30 - 21:00 1.50 CASING P SURF SLIP&CUT 50'OF DRILL LINE 21:00 - 22:30 1.50 CASING P SURF PRESSURE TEST 9-5/8"SURFACE CASING TO 250 LOW FOR 5 MIN/3,500 PSI FOR 30 MIN EACH -TEST APPROVED BY BP WTL MIKEL .SCHULTZ 22:30 - 00:00 1.50 CASING P SURF R/D CASING TEST EQUIPMENT 5/7/2013 00:00 - 01:30 1.50 CASING P SURF DRILL CEMENT SHOE TRACK TO 10'OF 9-5/8" SHOE AT 3,503' -TAGGED FLOAT COLLAR ON DEPTH AT 3,426' -500 GPM,2150 PSI,26%FLOW OUT,40 RPM, _ 4 FT-KLBS TORQUE 01:30 - 02:00 0.50 CASING P SURF DISPLACE MUD TO 9.4 PPG LSND Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 9 of 28" Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: 'X3-0135D-C.DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No..DOYON 25 Spud Date/Time:5/1/2013 10'30:00AM Rig Release.6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code ' NPT NPT Depth Phase Description of Operations (hr) (usft) — — 02:00 - 03:00 1.00 CASING P SURF CLEAN OUT SHOE TRACK AND DRILL 20'OF NEW FORMATION TO 3,543' 580 GPM,2160 PSI ON 1580 PSI OFF -40 RPM,5 FT-KLBS TORQUE ON,4 FT-KLBS TORQUE OFF,5 KLBS WOB -PU 115 KLBS,SO 85 KLBS,ROT 94 KLBS -ECD:9.98 PPG SLIDING,9.89 PPG ROTATING 03:00 - 07:00 4.00 DRILL P INTI PERFORM LOT AT 3,513'MD,2,848'TVD -MW9.4PPG -SUCCESSFUL LOT TO 16.04 PPG EMW(984 PSI) (>50 BBL KICK TOLERANCE) -ODE APPROVAL TO PROCEED 07.00 - 12.00 5.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE F/3543'MD TO 4369'MD(3335'TVD) 580 GPM,1930 PSI ON,1760 PSI OFF -100 RPM,6 FT-KLBS TORQUE ON,4 FT-KLBS TORQUE OFF,5 KLBS WOB -ECD 10.56 PPG -SURVEY EVERY 100 FT -ACTUAL ROTATING TIME=2.35 HRS -ACTUAL SLIDE TIME=0.53 HRS BACKREAM EVERY STAND PRIOR TO CONNECTIONS MUD WEIGHT:9.45 PPG IN,9.45 PPG OUT -HI-VIS SWEEP EVERY 500' 12:00 - 00:00 12.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE F/4,369' MD TO 5841'MD,4198 TVD -580 GPM,2354 PSI ON,1855 PSI OFF -100 RPM,7 FT-KLBS TORQUE ON,4 FT-KLBS TORQUE OFF,5-7 KLBS WOB -ECD 10.25 PPG -PUW-128K,SOW-102K,ROT-112K -SURVEY EVERY 100 FT -ACTUAL ROTATING TIME=4.51 HRS -ACTUAL SLIDE TIME=1.06 HRS -BACKREAM EVERY STAND PRIOR TO CONNECTIONS MUD WEIGHT:9.45 PPG IN,9.45 PPG OUT -HI-VIS SWEEP EVERY 500 5/8/2013 00:00 - 12:00 12.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 5812' MD TO 7409'MD(5116'TVD) -578 GPM,3160 PSI ON,2870 PSI OFF -100 RPM,8-10 FT-KLBS TORQUE ON,7 FT-KLBS TORQUE OFF,8 KLBS WOB -PU 150 KLBS,SO 108 KLBS,ROT 122 KLBS -10.58 PPG ECD -SURVEY EVERY—100 FEET -ACTUAL ROTATE TIME=4.88 HOURS -ACTUAL SLIDE TIME=1.87 HOURS BACKREAM FULL STAND BEFORE EVERY CONNECTION -MUD WEIGHT:9.6 PPG IN,9.6 PPG OUT Printed 7/1/2013 4.51:28PM North America-ALASKA-BP Page 10 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 I End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UW: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 12:00 - 18:00 6.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 7409' MD TO 8073'MD(8805'TVD) -580 GPM,3410 PSI ON,3171 PSI OFF -100 RPM,10 FT-KLBS TORQUE ON,8 FT-KLBS TORQUE OFF,13 KLBS WOB PU 155 KLBS,SO 108 KLBS,ROT 128 KLBS 10.2 PPG ECD SURVEY EVERY-100 FEET -ACTUAL ROTATE TIME=2.89 HOURS ACTUAL SLIDE TIME=0.41 HOURS -BACKREAM FULL STAND BEFORE EVERY CONNECTION MUD WEIGHT:9.8 PPG IN,9.8 PPG OUT 18:00 - 20:00 2.00 DRILL P INTI CIRCULATE BOTTOMS-UP 3 TIMES -580 GPM,3145 PSI -100 RPM,8 FT-KLBS TORQUE -PU 159 KLBS,SO 108 KLBS,ROT 128 KLBS -ROTATE AND RECIPROCATE PIPE AT 15 FT/MIN -MUD WEIGHT:9.8 PPG IN,9.8 PPG OUT -ICP-3187 PSI,FCP-3099 -ECD-10.49 PPG 20:00 - 22:00 2.00 DRILL P INTI MONITOR WELL FOR 10 MINUTES:STATIC MUD WEIGHT:9.8 PPG IN,9.8 PPG OUT -POH ON ELEVATORS FROM 8073'MD TO 7357'MD -PU 160 KLBS,SO 108 KLBS -TIGHT HOLE AT 7357'MD WITH 40 KLBS OVERPULL -ATTEMPT TO WORK THROUGH(FAILED) TRIP BACK IN HOLE TO 7600'MD 22:00 - 22:30 0.50 DRILL P INTI CIRCULATE BOTTOMS-UP 1.5 TIMES at 7600' MD -580 GPM,3111 PSI -100 RPM,8 FT-KLBS TORQUE -PU 160 KLBS,SO 108 KLBS,ROT 128 KLBS -ROTATE AND RECIPROCATE FULL STAND AT 15 FT/MIN 22:30 - 00:00 1.50 DRILL P INTI RESUME POH ON ELEVATORS FROM 7600' MD TO 7127'MD -MUD WEIGHT:9.8 PPG IN,9.8 PPG OUT -PU 156 KLBS,SO 102 KLBS -WORKING THROUGH TIGHT SPOTS AT 7265' MD,7254'MD,7137'MD UNTIL MINIMAL OVERPULL 5/9/2013 00:00 - 01:30 1.50 DRILL P INTI POH ON ELEVATORS FROM 7127'MD TO 5,880'MD -MUD WEIGHT:9.8 PPG IN,9.8 PPG OUT -PU 156 KLBS,SO 102 KLBS STARTED PULLING CONSISTENT 15K OVERPULL 01:30 - 02:30 1.00 DRILL P INTI CIRCULATE SUPER SWEEP -580 GPM,120 RPM,ROTATE AND RECIPROCATE FULL STAND -SWEEP BROUGHT BACK CONSIDERABLE CUTTINGS AND CLAY BALLS -40-50%INCREASE -ICP-2709 PSI,FCP-2630 PSI 02:30 - 03:30 1.00 DRILL P INTI POOH ON ELEVATORS F/5880'MD TO 9-5/8" SHOE AT 3,515' -NO TIGHT SPOTS Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 11 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) _ _ I Project Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) � 03:30 - 04:30 1.00 DRILL P INTI CIRCULATE BOTTOMS UP X 3 INSIDE THE 9-5/8"CASING SHOE -MUD WEIGHT:9.8 PPG IN,9.8 PPG OUT -580 GPM,ICP-2150 PSI,FCP-2050 PSI, 10.39 ECD,10.28 CALC ECD RECIPROCATING PIPE A FULL STAND 04:30 - 05:00 0.50 DRILL P INTI II SERVICE TOP DRIVE 05:00 - 07:00 2.00 DRILL P INTI tRIH ON ELEVATORS FROM 9-5/8"SHOE BACK TO BOTTOM AT 8,073'MD RIH ON ELEVATORS -FILL PIPE EVERY 20 STANDS • -NO TIGHT SPOTS 07:00 - 12:00 5.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 8073' MD TO 8578'MD(5798'ND) -578 GPM,3980 PSI ON,3690 PSI OFF -120 RPM,9-10 FT-KLBS TORQUE ON,8 FT-KLBS TORQUE OFF,12 KLBS WOB -PU 162 KLBS,SO 112 KLBS,ROT 134 KLBS -11.01 PPG ECD,10.57 PPG CALCULATED ECD -SURVEY EVERY-100 FEET -ACTUAL ROTATE TIME=2.66 HOURS ACTUAL SLIDE TIME=0.56 HOURS -BACKREAM FULL STAND BEFORE EVERY CONNECTION -MUD WEIGHT:10.2 PPG IN,10.2 PPG OUT 12:00 - 00:00 12.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 8073' MD TO 9404'MD(6284'TVD) -570 GPM,4200 PSI ON,4096 PSI OFF -40-120 RPM,10 FT-KLBS TORQUE ON,9 FT-KLBS TORQUE OFF,5-10 KLBS WOB -PU 176 KLBS,SO 116 KLBS,ROT 132 KLBS -10.97 PPG ECD,10.99 PPG CALCULATED ECD -SURVEY EVERY-100 FEET -ACTUAL ROTATE TIME=5.73 HOURS -ACTUAL SLIDE TIME=1.72 HOURS -BACKREAM FULL STAND BEFORE EVERY CONNECTION -MUD WEIGHT:10.2 PPG IN,10.2 PPG OUT 5/10/2013 00:00 - 02:00 2.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 9404' MD TO 9,543'MD(6376'ND) -550 GPM,4200 PSI ON,4096 PSI OFF -40-120 RPM,10 FT-KLBS TORQUE ON,9 FT-KLBS TORQUE OFF,5-10 KLBS WOB -PU 176 KLBS,SO 116 KLBS,ROT 132 KLBS -10.88 PPG ECD,CALCULATED ECD-10.57 PPG 02:00 - 02:30 0.50 DRILL P INTI CHANGE OUT PUMP#1 PRESSURE RELIEF VALVE -SERVICE WASH PIPE AND BLOCKS Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 12 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 02:30 - 12:00 9.50 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 9543' MD TO 9974'MD(6680'TVD) 547 GPM,4195 PSI ON,4000 PSI OFF -120 RPM,12 FT-KLBS TORQUE ON,9 FT-KLBS TORQUE OFF,12 KLBS WOB -PU 190 KLBS,SO 121 KLBS,ROT 149 KLBS -10.79 PPG ECD,10.63 PPG CALCULATED ECD -SURVEY EVERY--100 FEET '-ACTUAL ROTATE TIME=4.4 HOURS -ACTUAL SLIDE TIME=3.71 HOURS BACKREAM FULL STAND BEFORE EVERY CONNECTION -MUD WEIGHT:10.2 PPG IN,10.2 PPG OUT 12:00 - 00:00 12.00 DRILL P INTI 'DRILL 8-3/4"INTERMEDIATE HOLE FROM 9974' MD TO 10598'MD(7182'TVD) -520 GPM,4150 PSI ON,3950 PSI OFF -120 RPM,12 FT-KLBS TORQUE ON,10-11 FT-KLBS TORQUE OFF,11 KLBS WOB -PU 199 KLBS,SO 127 KLBS,ROT 155 KLBS -11.01 PPG ECD,10.57 PPG CALCULATED ECD SURVEY EVERY-100 FEET ACTUAL ROTATE TIME=5.18 HOURS ACTUAL SLIDE TIME=1.76 HOURS -BACKREAM FULL STAND BEFORE EVERY CONNECTION -MUD WEIGHT:10.3 PPG IN,10.3 PPG OUT 5/11/2013 00:00 - 12:00 12.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 10598'MD TO 11304'MD(7760'TVD) -502 GPM,4180 PSI ON,3875 PSI OFF -120 RPM,13-15 FT-KLBS TORQUE ON,11 FT-KLBS TORQUE OFF,17 KLBS WOB -PU 214 KLBS,SO 131 KLBS,ROT 168 KLBS -11.13 PPG ACTUAL ECD,10.72 PPG CALCULATED ECD -SURVEY EVERY-100 FEET -ACTUAL ROTATE TIME=8.35 HOURS -ACTUAL SLIDE TIME=0.36 HOURS -BACKREAM FULL STAND BEFORE EVERY CONNECTION -MUD WEIGHT:10.4 PPG IN,10.4 PPG OUT 12:00 - 18:00 6.00 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 11304'MD TO 11685'MD(8073'TVD) -502 GPM,4170 PSI ON,3945 PSI OFF -120 RPM,12 FT-KLBS TORQUE ON,10 FT-KLBS TORQUE OFF,12 KLBS WOB -PU 225 KLBS,SO 136 KLBS,ROT 168 KLBS -11.19 PPG ACTUAL ECD,10.73 PPG CALCULATED ECD MUD WEIGHT:10.4 PPG IN,10.4 PPG OUT 18'00 - 18 30 0.50 DRILL P SURF RIG SERVICE -CHANGING OUT FAILED AIR BOOT ON LOW PRESSURE RISER 2.5 BBL LSND MUD SPILL DUE TO FAILED LOW PRESSURE RISER AIR BOOT*** TRACTION# 2013-IR-4420703 Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 13 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 18:30 - 00:00 5.50 DRILL P INTI DRILL 8-3/4"INTERMEDIATE HOLE FROM 11685'MD TO 12064'MD(8385'TVD) 502 GPM,3987 PSI ON,3717 PSI OFF 120 RPM,12 FT-KLBS TORQUE ON,11 FT-KLBS TORQUE OFF,13 KLBS WOB PU 237 KLBS,SO 138 KLBS,ROT 174 KLBS -11.16 PPG ACTUAL ECD,10.73 PPG CALCULATED ECD -SURVEY EVERY-100 FEET -ACTUAL ROTATE TIME=6.81 HOURS ACTUAL SLIDE TIME=1.06 HOURS -BACKREAM FULL STAND BEFORE EVERY CONNECTION -MUD WEIGHT:10.4 PPG IN,10.4 PPG OUT 5/12/2013 00:00 - 10:30 10.50 DRILL P INTI 1DRILL 8-3/4"INTERMEDIATE HOLE FROM 12064'MD TO 12709'MD(8910'TVD) j-512 GPM,4160 PSI ON,3980 PSI OFF -120 RPM,12-13 FT-KLBS TORQUE ON,12 FT-KLBS TORQUE OFF,16 KLBS WOB -PU 245 KLBS,SO 145 KLBS,ROT 189 KLBS -11.23 PPG ACTUAL ECD,10.72 PPG CALCULATED ECD -SURVEY EVERY-100 FEET ACTUAL ROTATE TIME=5.61 HOURS ACTUAL SLIDE TIME=1.22 HOURS -BACKREAM FULL STAND BEFORE EVERY CONNECTION -MUD WEIGHT:10.4 PPG IN,10.4 PPG OUT 10:30 - 14:00 3.50 DRILL P INTI ROTATE AND RECIPROCATE FROM 12709'MD TO 12636'MD -CIRCULATE HI-VIS SWEEP AT 510 GPM,3900 PSI,120 RPM,11-12 FT-KLBS TORQUE CIRCULATE AT 530 GPM,4166 PSI,120 RPM, 11 FT-KLBS TORQUE OFF,PU 260 KLBS,SO 137 KLBS, 14:00 - 17:00 3.00 DRILL P INTI PJSM FOR POOH -MONITOR WELL-WELL STATIC -PUMP OUT OF THE HOLE F/12,709'MD TO 10,710'MD.BEGIN PUMPING AT 480 GPM, 3300 PSI,TO 10,262'MD,ECD-11.47 PPG, -85-480 GPM,550-3460 PSI -MW-10.45 PPG IN,10.45 PPG OUT -PU 260 KLBS,SO 130 KLBS 17:00 - 19:00 2.00 DRILL P INTI CIRCULATE BOTTOMS UP X 2 -ROTATE AND RECIPROCATE F/10,262'MD TO 10,165'MD -550 GPM,3944 PSI,120 RPM, -PU 193 KLBS,SO 124 KLBS,ROT 154 KLBS 19:00 - 00:00 5.00 DRILL P INTI PJSM FOR POOH MONITOR WELL PRIOR TO TRIP-WELL STATIC MW-10.45 PPG IN,10.45 PPG OUT -POOH ON ELEVATORS F/10,262'MD TO 6,060'MD PU 159 KLBS,SO 92 KLBS -MONITOR TRIP VIA PIT#2 -DID NOT ENCOUNTER ANY TIGHT SPOTS Printed 7/1/2013 4:51:28PM Page 14 of 28 North Ame Ca-ALASKA-BP = Operation Summary Rep �, ,fes •�/ - � ort � ,•.� a., „E , Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 5/13/2013 00:00 - 03:30 3.50 DRILL P INTI RIH WITH 8-3/4"DRILLING BHA FROM 7936' MD TO 12709'MD -RIH ON ELEVATORS 4"DP STANDS -BREAK CIRCULATION EVERY 20 STANDS, 120 GPM,50 PSI -WORKED TIGHT SPOTS 12560'MD TO 12580' MD SO 30-40 KLBS 03 30 - 06:00 2.50 DRILL P INTI I CIRCULATE BOTTOMS-UP 3 BOTTOMS UP -490 GPM,ICP 4070 PSI,FCP 4030 PSI -120 RPM,ROT 14 KLBS -MW 10.6 PPG IN,10.7 PPG OUT -ECD 11.36,CALCULATED 10.92 -PUMPED HI-VIS SWEEP AFTER FIRST BOTTOMS UP PU 273 KLBS,SO 139 KLBS© 12,709'MD 06:00 - 13:00 7.00 DRILL P INTI PJSM FOR POOH MONITOR WELL-WELL STATIC -MW-10.5 PPG IN 10.6 PPG OUT PUMP OUT OF THE HOLE F/12,709'MD TO 10,262'MD. -150 GPM,650 PSI -P/U 244 KLBS,S/O 115 KLBS @ 11,500'MD -CONSTANT 20-30K OVERPULL 13:00 - 14:00 1.00 DRILL P INTI ROT AND RECIPROCATE FROM 10,262'MD TO 10,165'MD(GHOST REAMER IN 9-5/8"SHOE) -MW-10.4 PPG IN,10.5 PPG OUT -545 GPM,3900 PSI -120 RPM,14K TORQUE -P/U 230K,S/O 112K PUMPED 740 BBLS -SAW 50%INCREASE IN CUTTINGS 14:00 - 18:00 4.00 DRILL P INTI PJSM FOR POOH MONITOR WELL PRIOR TO TRIP-WELL i STATIC MW-10.4 PPG IN,10.45 PPG OUT POOH ON ELEVATORS F/10,165'MD T/3510' MD -P/U 220K,S/O 120K -PUMP 25 BBL DRY JOB @ 9312' -CONSTANT 20-30K OVERPULL 18:00 - 19:30 1.50 DRILL P INTI ROT AND RECIP FROM 3510'MD TO 3418'MD (BIT IN 9-5/8"SHOE) -MW-10.4 PPG IN,10.45 PPG OUT -570 GPM,2230 PSI -120 RPM,5K TORQUE -P/U 106K,S/O 86K -CBU X 3 -SAW 50%INSCREASE IN CUTTINGS AT FIRST BOTTOMS UP 19:30 - 20:30 1.00 DRILL P INTI SLIP AND CUT-112'DRILL LINE 20:30 - 22:30 2.00 DRILL P INTI PJSM FOR POOH MONITOR WELL PRIOR TO TRIP-WELL STATIC -MW-10.4 PPG IN,10.45 PPG OUT POOH ON ELEVATORS F/3510'MD T/663'MD -GHOST REAMER 1/16"UNDERGAUGE 22:30 - 23:00 0.50 DRILL P INTI MONITOR WELL-WELL STATIC C/O SLIP INSERTS TO HAND SLIPS 23:00 - 00:00 1.00 DRILL P INTI PJSM FOR UD BHA POOH STANDING BACK 4"HWDP F/663'MD T/ 478'MD AS PER SLB DD AND MWD Printed 7/1/2013 4'51.28PM North America-ALASKA-BP Page 15 of 28 Operation Summary Report Common Well Name:U-16 AFE No • Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs • Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 5/14/2013 00:00 - 03:00 3.00 DRILL P INTI POOH UD BHA#4 AS PER SLB DD AND MWD F/478'MDT/SURFACE • -PDC BIT DULL GRADING: 1-4-BT-A-X-1-WT-TD -GHOST REAMER 1/16"UNDERGAUGE -NEAR BIT STABILIZER AND IN-LINE STABILIZER IN GAUGE -BIT 1/16"UNDERGAUGE 03:00 - 03:30 0.50 CASING P INTI CLEAN&CLEAR RIG FLOOR 03:30 - 04:30 1.00 CASING P INTI PJSM AND C/O UPPER PIPE RAMS TO 7" CASING RAMS -PULL STRIP-O-MATIC '-RD 4"HANDLING EQUIPMENT 04:30 - 06:30 2.00 CASING P INTI PJSM AND TEST BOP RAMS -P/U 7"TEST JOINT,M/U TEST PLUG,FILL • STACK WITH WATER PRESSURE TEST UPPER 7"RAMS • -250 PSI/4500 PSI FOR5MIN/5MIN CHARTED TEST -GOOD TEST FUNCTION TEST BLIND RAMS 06:30 - 09:30 3.00 CASING P INTI R/U TO RUN 7"CSG •-C/O TO LONG BAILS -INSTALL BAIL EXTENSIONS AND 7"SIDE DOOR ELEVATORS -R/U VOLANT CRT -PREP PIPE SHED FOR 7"CSG -C/O TO 7"SLIP SEGMENTS -R/U POWER TONGS -M/U XO F/FLOOR VALVE TO 7"VT HC -INSTALL 5"XO TO 4"SHEAR JOINT IN PIPE SHED 09:30 - 16:00 6.50 CASING P INTI RUN 7",26#,L-80,VT HC CASING TO 3495'MD M/U SHOE TRACK,BAKER-LOK'D BELOW FLOAT COLLAR -CHECK FLOATS -USE JET LUBE SEAL GUARD DOPE -TORQUE CONNECTIONS TO 11,950 FT-LBS -2 LOCKED DOWN CENTRALIZERS 5'F/PIN ON JT#1 AND MID-JOINT JNT#2 -RUN 196 FLOATING CENTRALIZERS ON JTS #3-198 -RIH @ 85 FT/MIN INSIDE CSG TO 3945'MD (9-5/8"SHOE) -FILL CSG EVERY 10 JTS -OBTAIN P/U AND S/O WEIGHTS EVERY 10 JTS -P/U=101K,S/O=95K @ 3945'MD -MUD WT:10.4 PPG IN,10.4 PPG OUT -MUD LOSSES WHILE RIH:0 BBLS 16:00 - 16:30 0.50 CASING P INTI CIRC B/U @ 9-5/8"SHOE -CIRC CSG CLEAN PRIOR TO ENTER THE OPEN HOLE -STAGE PUMPS UP TO 7 BPM -ICP @ 2 BPM=210 PSI,FCP @ 7BPM=645 PSI Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 16 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 16:30 - 19:30 3.00 CASING ' P INTI RUN 7",26#,L-80,VT HC CASING F/3945'T/ 4986'MD -USE JET LUBE SEAL GUARD DOPE -TORQUE CONNECTIONS TO 11,950 FT-LBS -RIH @ 60 FT/MIN IN OPEN HOLE -FILL CSG EVERY 10 JTS -EVERY 10 JTS F/9-5/8"SHOE T/TOP OF HRZ,BREAK CIRC AND WASH DOWN @ 3 BPM FOR 5 MIN -OBTAIN P/U AND 5/0 WEIGHTS EVERY 10 JTS -P/U=120K,S/O=96K @ 4986'MD -MUD WT:10.4 PPG IN,10.4 PPG OUT MUD LOSSES WHILE RIH:0 BBLS 19:30 - 20:00 0.50 CASING P INTI CIRC B/U @ 4986'MD -CIRC DUE TO INCREASING FRICTION FACTOR -FRICTION REDUCED F/0.4 T/0.3 -STAGE PUMPS UP TO 5 BPM,615 PSI CIRC 181 BBLS 20:00 - 00:00 4.00 CASING P INTI RUN 7",26#,L-80,VT HC CASING F/3945'T/ 8036'MD -USE JET LUBE SEAL GUARD DOPE TORQUE CONNECTIONS TO 11,950 FT-LBS -RIH @ 60 FT/MIN IN OPEN HOLE -FILL CSG EVERY 10 JTS -EVERY 10 JTS F/9-5/8"SHOE T/TOP OF HRZ,BREAK CIRC AND WASH DOWN @ 3 BPM FOR 5 MIN -OBTAIN P/U AND S/O WEIGHTS EVERY 10 JTS -P/U=185K,5/0=116K @ 8036' -MUD WT:10.4 PPG IN,10.4 PPG OUT MUD LOSSES WHILE RIH:0 BBLS 5/15/2013 00:00 - 03:30 3.50 CASING P INTI RUN 7",26#,L-80,VT HC CASING F/8036'T/ 10,266'MD(TOP HRZ) -USE JET LUBE SEAL GUARD DOPE -TORQUE CONNECTIONS TO 11,950 FT-LBS -2 LOCKED DOWN CENTRALIZERS 5'F/PIN ON JT#1 AND MID-JOINT JNT#2 -RUN 196 FLOATING CENTRALIZERS ON JTS #3-198 -RIH @ 60 FT/MIN IN OPEN HOLE -FILL CSG EVERY 10 JTS -EVERY 10 JTS F/9-5/8"SHOE T/TOP OF HRZ,BREAK CIRC AND WASH DOWN @ 3 BPM FOR 5 MIN -OBTAIN P/U AND S/O WEIGHTS EVERY 10 JTS -P/U=238K,S/O=128K,@ 10,266'MD -MUD WT:10.4 PPG IN,10.4 PPG OUT -MUD LOSSES WHILE RIH:0 BBLS 03:30 - 04:30 1.00 CASING P INTI CIRC B/U @ 10,266'MD -STAGE PUMPS UP TO 7 BPM -ICP=771 PSI @ 5 BPM,FCP=1000 PSI @ 7 BPM Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 17 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 04:30 - 08:30 4.00 CASING P INTI RUN 7",26#,L-80,VT HC CASING F/10,266'T/ 11,000'MD -USE JET LUBE SEAL GUARD DOPE -TORQUE CONNECTIONS TO 11,950 FT-LBS -2 LOCKED DOWN CENTRALIZERS 5'F/PIN ON JT#1 AND MID-JOINT JNT#2 -RUN 196 FLOATING CENTRALIZERS ON JTS #3-198 -RIH @ 60 FT/MIN IN OPEN HOLE -FILL CSG EVERY 10 JTS -OBTAIN P/U AND S/O WEIGHTS EVERY 10 JTS MUD WT:10.4 PPG IN,10.4 PPG OUT MUD LOSSES WHILE RIH:6 BBLS 08:30 - 12:30 4.00 CASING P INTI MAKE UP HANGER AND WASH DOWN TO 12,703'MD @ 125 GPM -RECIPROCATE PIPE WHILE CONDITION MUD FOR CEMENT JOB -STAGE PUMPS UP TO 300 GPM 12:30 - 14:00 1.50 CASING P INTI RIG UP CEMENT LINES -PUMP THROUGH CEMENT LINES AND CHART TEST SAME TO 250 PSI LOW/4500 PSI HIGH FOR 5 MIN,OK CONT RECIPROCATE PIPE AND CONDITION MUD FOR CEMENT JOB • Printed 7/1/2013 4:51:28PM North America-ALASKA-BP „ `'' Page 18 of 28 Operation Summary Report ' Common Well Name U-16 AFE No Event Type:DRL-ONSHORE(DON) � Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 14:00 - 18:00 4.00 CASING P INTI CEMENT 7"INTERMEDIATE CASING AS FOLLOWS: -PUMP 42 BBLS OF 10.7 PPG MUDPUSH II SPACER @ 5 BPM,870 PSI -RELEASE BOTTOM PLUG -PUMP 260 BBLS OF 11.5 PPG LITECRETE LEAD CEMENT @ 5 BPM,EXCESS VOLUME 30%(YIELD 1.75 CU.FT/SKn -PUMP 28 BBLS OF 15.8 PPG CLASS G TAIL© 5 BPM,EXCESS VOLUME 30% CYIELD 1.16 CU.FT/SK) -RECIPR_OCATED PIPE 5 FT AT SURFACE WHILE PUMPING CEMENT AT 5 BPM -DROP TOP PLUG PERFORM DISPLACEMENT WITH RIG PUMPS AND 10.4 PPG LSND MUD PER SLB CADE -DISPLACED 290 BBLS @ 7 BPM:ICP=800 PSI,FCP=1500 PSI,14%RETURN FLOW -DISPLACED,40BBLS @ 5 BPM:ICP=1050 PSI,FCP=1250 PSI,12%RETURN FLOW -DISPLACED 65 BBLS @ 3 BPM:ICP=900 PSI,FCP=1300 PSI,7%RETURN FLOW -DISPLACED 55 BBLS @ 2 BPM:ICP=1050 PSI,FCP=1300 PSI,2%RETURN FLOW -DISPLACED 23.1 BBLS @ 1.5 BPM: ICP= 1200 PSI,FCP=1350 PSI,1%RETURN FLOW -REDUCE RATE TO 1.5 BPM PRIOR TO PLUG BUMP:FINAL CIRCULATING PRESSURE 1350 PSI -BUMP PLUG AND INCREASE PRESSURE TO 1900 PSI,CHECK FLOATS-FLOATS HELD -TOTAL DISPLACEMENT VOLUME 473.1 BBLS (4714 STKS,ACTUAL PUMP EFFICIENCY= 95.7%) -TOTAL LOSSES FROM CEMENT EXIT SHOE TO CEMENT IN PLACE:0.0 BBLS 18:00 - 18:30 0.50 CASING P INTI PRSSURE TEST 7"CSG TO 250/3500 PSI F6R 5/30 MIN -SAW 58 PSI PRESSURE INCREASE DURING TEST -TEST APPROVED BY WTL MIKE SCHULTZ 18:30 - 20:00 1.50 CASING P INTI INJECT 5 BBLS IN 9-5/8"X 7"OA W/1000 PSI PUMP PRESSURE R/D VOLANT CRT UD 7"LANDING JNT R/D 7"ELEVATORS AND 4'BAIL EXTENSTIONS CIO 7"SLIP INSERTS TO HAND SLIPS CLEAN AND CLEAR RIG FLOOR 20:00 - 23:00 3.00 CASING P INTI INSTALL 7"X 9-5/8"PACKOFF TEST SAME TO 250/5000 PSI FOR 15/30 MIN- TEST FAIL C/O TEST MANIFOLD AND RETEST-GOOD TEST 23.00 - 00:00 1.00 CASING P INTI CLOSE BLIND-SHEAR CHANGE UPPER RAMS F/7"T/2-7/8"X 5-1/2" VBR'S INJECT 2 BBLS IN 9-5/8"X 7"OA W/1000 PSI PUMP PRESSURE Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 19 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs • Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 5/16/2013 10:30 - 14:00 3.50 CEMT P INTI PJSM FOR P/U BHA#5 P/U BHA#5 AS PER SLB DD&MWD -M/U SMITH 6-1/8"6 BLADE PDC BIT,JETS:2 X 12,1 X 13 VERIFIED BY WSL -P/U ARCHER AND SURFACE TEST @ 200 GPM-GOOD TEST P/U IMPULSE MWD TOOL P/U ADN AND LOAD ADN RADIOATIVE SOURCE -P/U BHA#5 AS PER SLB DD T/412'MD 00:00 - 06:30 6.50 CEMT P INTI TEST BOPE:ALL TESTS 250/3500 PSI FOR 5/5 MIN EXCEPT FOR MANUAL&SUPER CHOKES TEST TO 250/2000 PSI FOR 5/5 MIN -TEST ANNULUAR W/4"TEST JNT TEST 2-7/8"X 5-1/2"UPR AND LPR W/4"& 4-1/2"TEST JNTS -TEST CHOKE MANIFOLD VALVES,MANUAL& SUPER CHOKES -WITNESS WAIVED BY AOGCC REP JOHN CRISP ON 5/14 -SEE ATTACHED TEST CHARTS 06:30 - 07:30 1.00 CEMT P INTI -R/D TEST EQUIPMENT -PULL TEST PLUG -L/D TEST JT -DRAIN STACK -M/U SHEAR JT -INSTALL 7"X 10"WEAR RING 07:30 - 08:00 0.50 CEMT P INTI SERVICE TOP DRIVE 08:00 - 10:30 2.50 CEMT N RREP 12,709.00 INTI TROUBLE SHOOT AND REPAIR TOP DRIVE ROTATING MOTOR 14:00 - 23:00 9.00 CEMT P INTI PJSM FOR RIH RIH W/6-1/8"DRILLING BHA#5 F/412'MD T/ 12,584'MD -RIH ON ELEVATORS P/U 4"DOUBLES F/PIPE SHED T/5643'MD RIH ON ELEVATORS W/4"STANDS F/ DERRICK F/5643'T/12,584'MD -FILL PIPE EVERY 20 STANDS -BREAK CIRC EVERY 20 STANDS @ 220 GPM 'TO VERIFY DOWNHOLE TOOLS ARE FUNCTIONING -SHALLOW TEST IMPULSE TOOL @ 1540'MD -GOOD TEST 23:00 - 00:00 1.00 CEMT P INTI TAG CEMENT STRINGER @ 12,584'MD DRILL CEMENT STRINGERS F/12,584'T/ 12,618 MD',TAG PLUGS ON DEPTH @ 12,618' MD -GOT BACK RUBBER ON BN,BLACK THEN RED -220 GPM,2350 PSI ON,2250 PSI OFF -60 RPM,18K TORQUE,5-7K WOB -P/U=238K,S/O=100K,ROT=150K 5/17/2013 00:00 - 01:30 1.50 DRILL P INTI •DRILL CEMENT&PLUGS F/12,621'T/12,694' MD -220 GPM,2350 PSI ON,2250 PSI OFF -60 RPM,18K TORQUE,5-7K WOB P/U=238K,S/O=100K,ROT=150K Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 20 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 01:30 - 05:00 3.50 DRILL P INTI DISPLACE 10.4 PPG LSND W/8.6 PPG POWERPRO -200 GPM,2200 PSI -NO ROTATION,RECIPROCATE PIPE F/ 12,690'T/12,660' PUMP SCHEDULE: -60 BBLS STEEL LUBE PILL WITH 10%STEEL LUBE -40 BBLS HI-VIS 10.4 PPG SPACER -40 BBLS FRESH WATER 8.6 PPG POWERPRO SOLIDS-FREE MUD 05:00 - 06:00 1.00 DRILL P INTI 'DRILL SHOE TRACK F/12,694'MD T/12,709' MD -220 GPM,1350 PSI 60 RPM,7-9K TORQUE,5-7K WOB 06:00 - 07:00 1.00 DRILL P INTI DRILL RAT HOLE F/12,709'MD T/12,730'MD FOR FIT -270 GPM,1830 PSI 80 RPM,10-12K TORQUE,5-7K WOB 07:00 - 07:30 0.50 DRILL P INTI ROT&RECIP F/12,709'T/12,730'MD WHILE CIRC B/U PRIOR TO FIT -270 GPM,1830 PSI 80 RPM,10-12K TORQUE 07:30 - 09:00 1.50 DRILL P INTI RIG UP AND PERFORM FIT -MUD WT=8.6 PPG -SHOE @ 8906'TVD,12,704'MD -PUMP 3 BBLS TO 1257 PSI,BLED BACK 2.5 BBLS -FIT EMW=11.3PPG -SEE ATTACHED CHARTS 09:00 - 19:30 10.50 DRILL P PROD1 CONTROL DRILL 6-1/8"PRODUCTION HOLE F/ 12,730'T/13,019'MD(9110'TVD) -270 GPM,1885 PSI ON,1855 PSI OFF -170 RPM,11K TORQUE ON,7K TORQUE OFF, 10K WOB -PU 196K,SO 151K,ROT 168K -SURVEY EVERY 30'IN BUILD AND TURN SECTION(DOGLEG>5 DEG/100FT) -MUD WT.8.6 PPG IN AND OUT -BACKREAM 30'EVERY STAND MWD PROBLEMS,AZIMUTH ERRATIC 19:30 - 21:30 2.00 DRILL N ,DFAL 13,019.00 PROD1 CIRC&RECIP,NO ROT,WHILE TROUBLESHOOT MWD -250 GPM,1788 PSI -WAIT FOR FURTHER INSTRUCTION -CONSULT W/SLB SURVEY EXPERT, ADVISED TO CONTINUE 21:30 - 22:00 0.50 DRILL P PROD1 CONTROL DRILL 6-1/8"PRODUCTION HOLE F/ 13,019'T/13,039'MD(9117'TVD) -270 GPM,1885 PSI ON,1855 PSI OFF -170 RPM,11K TORQUE ON,7K TORQUE OFF, 10K WOB -PU 196K,SO 151K,ROT 168K -SURVEY EVERY 30'IN BUILD AND TURN SECTION(DOGLEG>5 DEG/100FT) -MUD WT.8.6 PPG IN AND OUT -BACKREAM 30'EVERY STAND MWD PROBLEMS PERSIST Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 21 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:OOAM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 22:00 - 23:00 1.00 DRILL N DFAL 13,039.00 PROD1 CIRC&RECIP,NO ROT,WHILE TROUBLESHOOT MWD -250 GPM,1788 PSI PHONE CALL WITH ODE DISCUSSING MWD ISSUES DECIDE TO CONTINUE DRILLING WITH CURRENT BHA -SURVEYS EVERY 30',CORRECT EVERY SURVEY BEFORE DRILLING AHEAD 23:00 - 00:00 1.00 DRILL P PROD1 CONTROL DRILL 6-1/8"PRODUCTION HOLE F/ 13,039'T/13,040'MD(9116'TVD) -270 GPM,2000 PSI ON,1985 PSI OFF 120 RPM,12K TORQUE ON,9K TORQUE OFF,10K WOB PU 206K,SO 151K,ROT 167K SURVEY EVERY 30',CORRECT EVERY SURVEY BEFORE DRILLING AHEAD ACTUAL ROTATE TIME=4.72 HRS -MUD WT.8.6 PPG IN AND OUT BACKREAM 30'EVERY STAND 5/18/2013 00:00 - 03:30 3.50 DRILL P PROD1 CONTROL DRILL 6-1/8"PRODUCTION HOLE F/ 13,040'T/13,312'MD(9134'TVD) -270 GPM,2000 PSI ON,1985 PSI OFF 120 RPM,12K TORQUE ON,9K TORQUE OFF,10K WOB -PU 206K,SO 151K,ROT 167K -SURVEY EVERY 30',CORRECT EVERY SURVEY BEFORE DRILLING AHEAD -MUD WT.8.6 PPG IN AND OUT BACKREAM 30'EVERY STAND 03:30 - 05:00 1.50 DRILL N DFAL 13,312.00 PROD1 TROUBLESHOOT PRESSURE LOSS -PRESSURE LOSS F/2020 PSI T/1850 PSI WHILE DRILLING -PICK UP OFF BOTTOM -SHUT DOWN AND SURFACE TEST LINES- TEST GOOD -LINE UP AND PUMP DOWN DRILLSTRING WHILE ROT&RECIP -PRESSURE CONTINUE TO DROP T/1750 PSI -MWD TURBINE RPM DROP F/3600 T/2940 RPM 05:00 - 13:30 8.50 DRILL N DFAL 13,312.00 PROD1 POOH F/13,312'T/412'MD LOOKING FOR SUSPECTED WASHOUT MONITOR WELL FOR 10 MIN-STATIC -MUD WT 8.6 PPG IN&OUT POOH ON ELEVATORS F/13,312'T/12,942'MD PU 206K,SO 151K,ROT 167K i 13,312'MD -PIPE STARTED PULLING DRY PUMP OUT OF HOLE F/12,942'T/10,950'MD POOH ON ELEVATORS F/10,950'T/412'MD •13:30 - 14:00 0.50 DRILL N DFAL 13,312.00 PROD1 MONITOR WELL PRIOR TO PULLING NON-SHEARABLES ACROSS THE STACK Printed 7/1/2013 4 51.28PM North America-ALASKA-BP Page 22 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date. X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 14:00 - 15:00 1.00 DRILL N DFAL 13,312.00 PROD1 PJSM FOR UD BHA UD BHA F/412'MDT/86'MD -KELLY UP T/XO ON TOP OF WELL COMMANDER&ATTEMPT TO PUMP FOR MWD READING -CONNECTION @ XO TO WELL COMMANDER LEAKING -L/D XO,WELL COMMANDER,AND FLOAT SUB -STAND BACK FLEX COLLARS -INSPECT XO AND WELL COMMANDER: -CRACKED PIN ON XO -WASHED OUT BOX ON WELL COMMANDER -SEE ATTACHED PICTURES 15:00 - 16:30 1.50 DRILL N DFAL 13,312.00 PROD1 CONT L/D BHA AS PER SLB MWD AND DD -PJSM FOR REMOVING ADN RADIOACTIVE SOURCE -REMOVE SOURCE AS PER SLB MWD AND DD AND SECURE IN SOURCE BOX -L/D BHA F/86'MD,BREAK BIT 16:30 - 17:00 0.50 DRILL _N DFAL 13,312.00 PROD1 CLEAR AND CLEAN RIG FLOOR 17:00 - 20:00 3.00 DRILL N DFAL 13,312.00 PROD1 P/U NEW BHA#6 AS PER SLB MWD AND DD •-M/U NEW BIT TO NEW POWERDRIVE ARCHER -SURFACE TEST ARCHER @ 220 GPM,610 PSI-GOOD TEST -P/U NEW IMPULSE MWD -PJSM FOR ADN RADIOACTIVE SOURCE -P/U ADN AND LOAD SOURCE AS PER SLB MWD AND DD -CONT M/U BHAT/415'MD,P/U HWDP& JARS 20:00 - 00:00 4.00 DRILL N DFAL 13,312.00 PROD1 RIH WITH 6-1/8"DRILLING BHA#6 F/415'T/ 6,107'MD -RIH ON ELEVATORS ON STANDS F/DERRICK -BREAK CIRC EVERY 20 STANDS AND PUMP @ 220 GPM FOR 5 MIN TO FUNCTION DOWNHOLE TOOLS 5/19/2013 00:00 - 04:30 4.50 DRILL N DFAL 13,312.00 PROD RIH WITH 6-1/8"DRILLING BHA#6 F/6,107'T/ 12,657'MD -RIH ON ELEVATORS ON STANDS F/DERRICK -BREAK CIRC EVERY 20 STANDS AND PUMP @ 220 GPM FOR 5 MIN TO FUNCTION DOWNHOLE TOOLS • 04:30 - 06:00 1.50 DRILL P PROD SLIP&CUT—94 FT DRILL LINE 06:00 - 10:00 4.00 DRILL N DFAL 13,312.00 PROD RIH T/13,312'MD RETAKING SURVEYS @ 12797',12817',12879', 12911',12943',12975', 13007',13101',13134',13164',13197',13228' MD -RIH ON ELEVATORS F/12,657'T/13,139'MD -TIGHT HOLE @ 13,139',WORK THROUGH W/ 20K -WASH DOWN F/13,139'T/13,312'MD -225 GPM,1650 PSI Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 23 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 10:00 - 12:00 2.00 DRILL P PROD DRILL 6-1/8"PRODUCTION HOLE F/13,312'T/ 13,389'MD(9118'TVD) -250 GPM,1850 PSI ON,1830 PSI OFF -80 RPM,9-10K TORQUE ON,6K WOB -PU 200K,SO 155K,ROT 180K -SURVEY EVERY 30',CORRECT EVERY SURVEY BEFORE DRILLING AHEAD I-ACTUAL ROTATE TIME=1.36 HRS MUD WT.8.6 PPG IN AND OUT BACKREAM 30'EVERY STAND 12:00 - 00:00 12.00 DRILL P PROD CONTROL DRILL 6-1/8"PRODUCTION HOLE F/ 13,389'T/14,179'MD(9026'TVD) -LIMIT ROP T/200 FT/HR -250 GPM,1930 PSI ON,1920 PSI OFF -120 RPM,11K TORQUE ON,7-8K TORQUE OFF,12K WOB -PU 205K,SO 152K,ROT 173K -SURVEY EVERY 90',CORRECT EVERY SURVEY BEFORE DRILLING AHEAD -ACTUAL ROTATE TIME=6.85 HRS -MUD WT.8.6 PPG IN AND OUT -BACKREAM FULL 90'EVERY STAND SIM OPS @ 16:30: BULLHEAD FREEZE PROTECT DOWN 9-5/8"X 7"OA T/2375'MD(2200'TVD) -PUMP 10 BBLS 10.4 PPG LSND MUD FOLLOWED BY 67 BBLS OF DIESEL -TOTAL MUD INJECTED INTO OA PRIOR TO FREEZE PROTECT WAS 85 BBLS OF 10.4 PPG LSND 5/20/2013 00:00 - 05:00 5.00 DRILL P PROD CONTROL DRILL 6-1/8"PRODUCTION HOLE F/ 14,179'T/14,570'MD(9020'TVD) -LIMIT ROP T/200 FT/HR -250 GPM,1930 PSI ON,1920 PSI OFF -120 RPM,11KTORQUE ON,7-8K TORQUE OFF,12K WOB -PU 205K,SO 152K,ROT 173K -SURVEY EVERY 90',CORRECT EVERY SURVEY BEFORE DRILLING AHEAD -MUD WT.8.6 PPG IN AND OUT -BACKREAM FULL 90'EVERY STAND STARTED LOSING FLUID 05:00 - 05:30 0.50 DRILL P PROD P/U OFF BOTTOM,CONTINUE CIRC @ 250 GPM TO MEASURE DYNAMIC LOSSES -DYNAMIC LOSSES=145 BBUHR SHUT DOWN PUMPS,MONITOR TO MEASURE STATIC LOSSES -STATIC LOSSES=64 BBL/HR Printed 7/1/2013 4.51:28PM North America-ALASKA-BP Page 24 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 05:30 - 06:00 0.50 DRILL P PROD DRILL 6-1/8"PRODUCTION HOLE F/14,570'T/ 14,653'MD(9020'TVD) -DRILL 100'PAST LOSS ZONE PRIOR TO PUMP LCM PILL 250 GPM,1850 PSI ON -120 RPM,12K TORQUE ON,17K WOB SIM OPS: -MIXING 80 BBL LCM PILL: • -40 BBL BLEND#1:5 PPB SAFECARB 1400, 15 PPB SAFECARB 750,10 PPG MIX II CSE,10 PPB G-SEAL -40 BBL BLEND#2:5 PPB SAFECARB 500,5 PPB SAFECARB 250,10 PPB SAFECARB 40, 10 PPB MIX II MED,10 PPB G-SEAL -DILUTE 80 BBL PILL WITH WATER AND MUD TO REDUCE LCM CONCENTRATION BELOW 35 PPB AS PER SLB ARCHER TOOL LIMIT -ORDERED 580 BBLS ADDITIONAL 8.6 PPG POWERPRO FROM MUD PLANT 06:00 - 06.30 0.50 DRILL P PROD PUMP 80 BBL LCM PILL @ 14,653'MD -DILUTE WITH WATER AND MUD TO KEEP PILL UNDER 35 PPB AS PER SLB ARCHER TOOL SPEC DYNAMIC LOSSES FELL T/25 BBL/HR 0630 - 1100 5.50 DRILL P PROD DRILL 6-1/8"PRODUCTION HOLE F/14,653'T/ 14,748'MD(9025'TVD) -LIMIT ROP T/200 FT/HR -250 GPM,1810 PSI ON,1800 PSI OFF • -140 RPM,13-14KTORQUE ON,8K TORQUE OFF,5K WOB -PU 212K,SO 146K,ROT 180K -SURVEY EVERY 30' MUD WT.8.7 PPG IN AND OUT -BACKREAM FULL 90'EVERY STAND *DYNAMIC LOSSES STEADY©30-35 BBL/HR *ADD 5 PPB(-2 SKS/HR)ALTERNATING SAFECARB 20&SAFECARB 40 W/G-SEAL INTO ACTIVE MUD SYSTEM WHILE DRILLING *TOUR LOSSES=356 BBLS • Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 25 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 12:00 - 00:00 12.00 DRILL P PROD DRILL 6-1/8"PRODUCTION HOLE F/14,748'T/ 15,699'MD(9022'TVD) -LIMIT ROP T/200 FT/HR -250 GPM,1910 PSI ON,1845 PSI OFF -140 RPM,15K TORQUE ON,8K TORQUE OFF,7K WOB -PU 218K,SO 143K,ROT 174K -SURVEY EVERY 30' -MUD WT.8.7 PPG IN AND OUT -BACKREAM FULL 90'EVERY STAND PUMP 80 BBL LCM PILL(BLEND#1&BLEND #2 ABOVE)@ 15,160'MD,16:00 HRS *DILUTE 80 BBL PILL WITH WATER AND MUD •TO REDUCE LCM CONCENTRATION BELOW 35 PPB AS PER SLB ARCHER TOOL LIMIT *DYNAMIC LOSSES STEADY @ 30-35 BBL/HR ADD 5 PPB(-2 SKS/HR)ALTERNATING SAFECARB 20&SAFECARB 40 W/G-SEAL INTO ACTIVE MUD SYSTEM WHILE DRILLING *TOUR LOSSES =430 BBLS TOTAL LOSSES=786 BBLS 5/21/2013 00:00 - 12:00 12.00 DRILL P PROD DRILL 6-1/8"PRODUCTION HOLE F/15,699'T/ •16,625'MD(8,993'TVD) LIMIT ROP T/200 FT/HR -250 GPM,1960 PSI ON,1940 PSI OFF -140 RPM,16K TORQUE ON,8K TORQUE OFF,10K WOB -PU 217K,SO 144K,ROT 180K -SURVEY EVERY 30' -MUD WT.8.6 PPG IN/8.7 PPG OUT -BACKREAM FULL 90'EVERY STAND AST=0 HRS,ART=7.21 HRS,ADT=7.21 HRS TOTAL BIT HOURS=28.07 HRS,TOTAL JAR HOURS=40.2 HRS DYNAMIC LOSSES STEADY @ 30-35 BBL/HR 'ADD 5 PPB(-2 SKS/HR)ALTERNATING SAFECARB 20&SAFECARB 40 W/G-SEAL INTO ACTIVE MUD SYSTEM WHILE DRILLING 12:00 - 00:00 12.00 DRILL P PROD DRILL 6-1/8"PRODUCTION HOLE F/16,625'T/ 17,408'MD(8,921'TVD) -250 GPM,2150 PSI ON,2107 PSI OFF -140 RPM,17K TORQUE ON,8K TORQUE OFF,10K WOB -PU 229K,SO 115K,ROT 176K -SURVEY EVERY 100' -MUD WT.8.6+PPG IN/8.7 PPG OUT AST=0 HRS,ART=6.36 HRS,ADT=6.36 HRS • TOTAL BIT HOURS=34.43 HRS,TOTAL JAR • HOURS=46.5 HRS • *DYNAMIC LOSSES STEADY @ 30-35 BBL/HR • *CONTINUE TO TREAT MUD SYSTEM W/ SAFECARB 20/40,G-SEAL • Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 26 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor.DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 5/22/2013 00:00 01:00 1.00 DRILL P PROD DRILL 6-1/8"PRODUCTION HOLE TO TD F/ 17,408'MD T/17,504'MD -250 GPM,2150 PSI ON,2107 PSI OFF -140 RPM,17K TORQUE ON/8K TQ OFF,10K WOB -PU 229K,SO 115K,ROT 176K -MUD WT.8.6+PPG IN/8.7 PPG OUT AST=0 HRS,ART=1.1 HRS,ADT=1.1 HRS TOTAL BIT HOURS=35.53 HRS,TOTAL JAR HOURS=47.6 HRS 01:00 - 05:00 4.00 DRILL P PROD CBU 3X -250 GPM,2160 PSI -120 RPM,12-14K TO -PUMPED 104 BBLS(35 PPB)LCM SWEEP -MIX-II,G-SEAL,AND SAFECARB 20 AND SAFECARB40 05:00 - 09:30 4.50 DRILL P PROD MONITOR WELL FOR 10 MIN:STATIC -MUD WEIGHT=8.65 PPG IN/8.7PPG OUT BACKREAM OUT OF HOLE F/17,503'MD T/ 15,964'MD -250 GPM,1950 PSI --140 RPM,11-12K TQ -PACKING OFF AT 16,371'MD-16350'MD -200 PSI PUMP PRESSURE INCREASE,16.5K TQ -PACKED OFF AT 15,694'MD -400 PSI PUMP PRESSURE INCREASE,17K TO 09:30 - 11:00 1.50 DRILL P PROD RIH F/15,964'MD T/15,986'MD -STAGE PUMPS UP T/250 GPM -ROTATE AND RECIPROCATE F/15,891'MD T/ 15,986'MD -CIRCULATE FOR 30 MIN -250 GPM,140 RPM 11.00 - 18:30 7.50 DRILL • P PROD CONT BROOH F/15,986'MD T/12,759'MD -250 GPM.1,950 PSI -140 RPM,10-12KTQ -DYNAMIC LOSS RATE=10 BPH -STATIC LOSS RATE=3BPH 18:30 - 20:30 2.00 DRILL P PROD CBU 2X -250 GPM,1730 PSI -140 RPM,9K TQ 20:30 - 22:00 1.50 DRILL P PROD SLIP AND CUT DRILLING LINE -PJSM -STATIC LOSS RATE=3 BPH -MONITOR WELL VIA TRIP TANK DURING SLIP AND CUT 22:00 - 22:30 0.50 DRILL P PROD CALIBRATE AMPHION AND TOTCO 122:30 - 23:00 0.50 DRILL P PROD SERVICE TOP DRIVE -STATIC LOSS RATE=4.5 BPH 23:00 - 00:00 1.00 DRILL N RREP PROD REPLACE WEAR PAD FASTENERS ON TOP DRIVE 5/23/2013 00:00 - 03:00 3.00 DRILL P PROD RIH ON ELEVATORS TO 13,776'MD. Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 27 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project.Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UW: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 03:00 - 06:00 3.00 DRILL P PROD WASH AND REAM PAST TIGHT SPOTS. -TIGHT HOLE ENCOUNTERED AT 13,776' MD. -TIGHT HOLE ENCOUNTERED AT 16,380'MD. -ATTEMPT WORK PAST THIS SPOT DRY,GOT TO 16,422'. -MU TDS,ESTABLISH CIRC 240 GPM, ROTATION 120 RPM AND WASH TO 16,458'. WORK PIPE DRY W/NO ROTATION 16,458' TO 16,365' NO PROBLEMS. -RIH TO 16,516'AGAIN ENCOUNTER TIGHT HOLE AND UNABLE TO PASS. WORK PIPE DRY. -MU TDS AND WASH F/16,458'TO 16,551'W/ 240 GPM AND 120 RPM. WORK THROUGH SAME AREA DRY T/16,651 MD. 06:00 - 08:30 2.50 DRILL P PROD CONT TO REAM IN HOLE F/16,651'MD T/ 17,029'MD. -TIGHT OVER ENTIRE INTERVAL. -250 GPM,2180 PSI ON. -140 RPM,8-10K TQ. RIH DRY. 08:30 - 09:00 0.50 DRILL P 1 PROD RIH ON ELEVATORS F/17,029'MD T/17,410' MD. -TIGHT SPOT ENCOUNTERED AT 17,410'MD. -UNABLE TO WORK THROUGH. 09:00 - 10:00 1.00 DRILL P PROD CONT TO REAM IN THE HOLE F,17,410'MDT/ 17,503'MD. -250 GPM,2180 PSI ON. 140 RPM,8-10K TQ. 10:00 - 11:30 1.50 DRILL P PROD ROTATE AND RECIPROCATE F/17,408'MDT/ 17,503'MD WHILE CBU 1.5X. -250 GPM,2200 PSI ON. -140 RPM,8-10K TQ. -MONITOR WELL 10 MIN:STATIC 11:30 - 12:30 1.00 DRILL P PROD POOH ON ELEVATORS F/17,028'MD T/16,100' MD. -TIGHT SPOTS©16,487'25K OVERPULL, 16,212'50K OVERPULL 12:30 - 13:30 1.00 DRILL P PROD RIH ON ELEVATORS TO BOTTOM @ 17,503' MD 13:30 - 15:30 2.00 DRILL P PROD CBU 2X -RECIPROCATE PIPE 90' -250 GPM,2200 PSI ON. -140 RPM,9K TQ. -P/U=210K,S/O=140K. -DYNAMIC LOSS RATE=25 BPH. MONITOR STATIC WELL FOR 10 MIN:FLUID COLUMN DROPPING. STATIC LOSS RATE=10 BPH. 15:30 - 19:00 3.50 DRILL P PROD POOH ON ELEVATORS F/17,503'MD T/12,659' MD. -STATIC LOSS RATE=10 BPH. Printed 7/1/2013 4:51:28PM North America-ALASKA-BP Page 28 of 28 Operation Summary Report Common Well Name:U-16 AFE No Event Type:DRL-ONSHORE(DON) Start Date:4/22/2013 End Date: X3-0135D-C:DRILL(11,335,130.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:00 - 20:00 1.00 DRILL P PROD BREAK CIRCULATION. -DROP 1.76"ISOLATION BALL TO OPEN WELL COMMANDER. -85 GPM. -BALL ON SEAT AT 51.5 BBLS. -PRESSURE UP AND OBSERVE SHIFT OPEN AT 1,800 PSI. VERIFY MWD ISOLATION(GOOD). -STAGE PUMPS UP TO 400 GPM,1,530 PSI. -CBU. -PUMP 30-BBLS,9.9 PPG DRY JOB. 20:00 - 00:00 4.00 DRILL P PROD POOH ON ELEVATORS F/12,659'MD T/5,250' MD. 5/24/2013 00:00 - 03:00 3.00 DRILL P PROD POOH W/BHA#6 03:00 - 05:30 2.50 DRILL P PROD L/D BHA#6 -PJSM -REMOVE SOURCE PER SLB DD -CONT TO PULL BHAAND LD SAME -BIT GRADE:3-1-ER-A-X-1-CT-TD Printed 7/1/2013 4 51:28PM North America-ALASKA-BP Page 1 of 9 Operation Summary Report Common Well Name U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 End Date:6/5/2013 X3-0135D-C:DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 5/24/2013 05:30 - 06:30 1.00 CASING P RUNPRD RU TO RUN 4.5",12.6#,L-80,SWELL PACKER PRODUCTION LINER 06:30 - 10:00 3.50 CASING P RUNPRD RIH W/PRODUCTION LINER ASSEMBLY -SHOE TRACK • -ANCHOR PACKER -WELLBORE ISOLATION VALVE -LOCATOR SUB FILL PIPE AND CHECK FLOATS(GOOD) 10:00 - 12:00 2.00 CASING P • RUNPRD CONT RIH W/4.5",12.6#,L-80,HYD 521, PRODUCTION LINER T/1,170'MD -STATIC LOSS RATE:5 BPH 12:00 - 17:30 5.50 CASING P RUNPRD CONT RIH W/4.5",12.6#,L-80 PRODUCTION LINER F/1,170'MDT/4,914 MD -STATIC LOSS RATE:3 BPH DYNAMIC LOSS RATE:8 BPH 17:30 - 18:30 1.00 CASING P RUNPRD PU BAKER LINER HANGER ASSEMBLY -ADD PAL MIX -SIMOPS:CIRC LINER VOLUME -130 GPM,320 PSI -P/U=87K,S/0=81K 18:30 - 00:00 5.50 CASING P RUNPRD CONT.RIH W/PRODUCTION LINER ASSEMBLY ON 4"DP F/4,948'MD T/9,705'MD -FILL EVERY 10 STANDS • 125 GPM,550 PSI -P/U=130K,S/O=113K 5/25/2013 00:00 - 02:30 2.50 CASING P RUNPRD CONT.RIH W/PRODUCTION LINER ASSEMBLY ON 4"DP F/9,705'MDT/12,680' MD. -FILL EVERY 10 STANDS. 02:30 - 04:00 1.50 CASING P RUNPRD CIRCULATE 1.5X LINER VOLUME. -240 BBLS. -120 GPM,610 PSI. -P/U=171K,S/O=138K. -DYNAMIC LOSS RATE=6 BPH. -NO ISSUES. 04:00 - 12:00 8.00 CASING P RUNPRD •CONT RIH W/4.5"PRODUCTION LINER ON 4" DP F/12,680'MD T/16,450'MD. -ENCOUNTERED MULTIPLE TIGHT SPOTS. 13,692'MD,14,603'MD,14,643,15,593'MD. -16,449' MD,UNABLE TO PROGRESS UP OR DOWN,BROKE OVER AT 60K OVERPULL. -CONT TO WORK PIPE AT 65 GPM ON UPSTROKE,NO PUMPS ON DOWNSTROKE. 1-FREE ON UPSTROKE,BREAKING OVER AT 240K. -NO-GO PAST 16,450'MD. -P/U=220K,S/O=120K _ 12:00 - 00:00 12.00 CASING P RUNPRD CONT WORKING 4.5"LINER F,16,450'MDT/ 17,130'MD. -BREAKING OVER AT 300K UP, 50K DOWN. -PUMP WHEN NEEDED UP TO 65 GPM.950 PSI. Printed 6/17/2013 10:56:13AM North America-ALASKA-BP Page 2 of 9 Operation Summary Report Common Well Name:U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 Date:6/5/2013 X3-01350-C.DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30 End OOAM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 5/26/2013 00:00 - 04:00 4.00 CASING P RUNPRD CONT.WORKING 4.5"PRODUCTION LINER AT 17,130' -60 GPM,870 PSI -NO PROGRESS MADE -4K TRAPPED TORQUE 1 -BREAKOVER AT 270K-300K,WORK DOWN ! TO 40K P/U=120K,S/0=230K -DYNAMIC LOSS RATE:5 BPH 04:00 - 04:30 0.50 CASING P RUNPRD DISCUSS PLAN FORWARD WITH ODE,WTL, ETL. 04:30 - 07:00 2.50 CASING P RUNPRD 'CONT.WORKING 4.5"PRODUCTION LINER AT 17,130'MD- -SET TORQUE LIMIT AT 13K 60 GPM,870 PSI -NO PROGRESS AT 17,135'MD 07:00 - 07:30 0.50 CASING P RUNPRD INSPECT-AND SERVICE TOP DRIVE 07:30 - 08:00 0.50 CASING N RREP 17,135.00 -RUNPRD REPLACE TOP DRIVE GUIDE BOLT 08:00 - 10:30 2.50 CASING • P RUNPRD CONT.WORKING 4.5"PRODUCTION LINER AT 17,130' -NO PROGRESS AT 17,135'MD 10:30 - 11:30 1.00 CASING N DPRB 17,135.00 RUNPRD UNABLE TO BREAKOVER ON UP STROKE -P/U=350K '-80 GPM,950 PSI ' -S/O AND PUMP AT 100 GPM,1130 PSI -P/U=365K • -SIO TO NEUTRAL AT 170K -BLEED PUMP PRESSURE AND ROTATE -5 RPM,5K TQ -BREAKOVER AT 300K P/U '11:30 - 00:00 12.50 CASING N DPRB 17,135.00 RUNPRD PUMP OUT OF HOLE T/12,900'MD. -40 GPM,750 PSI ' -ROTATE 5K WHEN NEEDED -DYNAMIC LOSS RATE:20 BPH 5/27/2013 00:00 - 01:00 1.00 1 CASING i N DPRB 17,123.00 RUNPRD CONT.TO PUMP OUT OF HOLE F/12,900'MD T/12,457'MD. • -40 GPM,370 PSI 01:00 - 02:30 1.50 CASING P RUNPRD SLIP AND CUT DRILLING LINE. 02:30 - 03:00 0.50 CASING P RUNPRD SERVICE AND INSPECT TOP DRIVE AND CROWN. 03:00 - 03:30 0.50 CASING P 1 RUNPRD CALIBRATE AMPHION,TOTCO,AND SLB SYSTEMS. 03:30 - 13:00 9.50 CASING N DPRB 17,123.00 RUNPRD CONT TO PUMP OUT OF HOLE F/12,457'MD T/5,602'MD. i -80 GPM,450 PSI 13:00 - 13:30 0.50 CASING N DPRB 17,123.00 RUNPRD L/D LINER HANGER ASSEMBLY. 13:30 - 14:30 1.00 CASING N DPRB 17,123.00 RUNPRD RU TO PULL 4.5"LINER ASSEMBLY. -CHANGEOUT ELEVATORS,SLIP INSERTS. -RU HYDRAULIC TONGS 14:30 - 00:00 9.50 CASING N DPRB 17,123.00 RUNPRD L/D 4.5",12.6#,L-80,HYDRIL 521 LINER. -HOLD PJSM W/HALLIBURTON,DOYON CASING,WSL. I -BREAK CIRCULATION EVERY 10 JOINTS -2 BPM,450 PSI -INSPECT AND MEASURE SWELL PACKER AND SLIDING SLEEVES -STATIC LOSS RATE:4 BPH 5/28/2013 00:00 - 07:30 7.50 CASING N DPRB 17,142.00 RUNPRD CONT.TO LD 4.5",L-80,HYD 521,LINER 1 ASSEMBLY. Printed 6/17/2013 10:56:13AM North America-ALASKA-BP Page 3 of 9 Operation Summary Report Common Well Name:U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 End Date:6/5/2013 X3-0135D-C:DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 07:30 - 08:00 0.50 CASING N DPRB 17,142.00 RUNPRD CLEAN AND CLEAR RIG FLOOR. 08:00 - 09:30 1.50 CASING P RUNPRD CHANGE OUT SAVER SUB. -PJSM 09:30 - 10:00 0.50 CASING P RUNPRD SERVICE AND INSPECT TOP DRIVE. 10:00 11:30 1.50 BOPSUR P RUNPRD .PULL WEAR BUSHING,INSTALL BOP TEST PLUG. RU AND PUMP DOWN IA AND ESTABLISH CIRCULATION TO KEEP HOLE FULL. RU BOPE TEST EQUIPMENT. 11:30 - 16:30 5.00 BOPSUR P RUNPRD TEST BOPE:ALL TESTS 250/3500 PSI FOR 5/5 MIN EXCEPT FOR MANUAL&SUPER CHOKES TEST TO 250/2000 PSI FOR 5/5 MIN. -TEST ANNULUAR W/4"AND TEST JNT. -TEST 2-7/8"X 5-1/2"UPR AND LPR W/4"& 4-1/2"TEST JNTS. -TEST CHOKE MANIFOLD VALVES,MANUAL& SUPER CHOKES. -WITNESS WAIVED BY AOGCC REP LOU GRIMALDI ON 5/28. -SEE ATTACHED TEST CHARTS. 16:30 - 17:30 1.00 CASING P RUNPRD R/D TEST EQUIPMENT. PULL TEST PLUG. -INSTALL 7"ID WEAR BUSHING. 17:30 - 20:30 3.00 CASING N DPRB 17,142.00 RUNPRD MU BHA#7 PER SLB DD. 20:30 - 21:00 0.50 CASING N DPRB 17,142.00 RUNPRD RIH W/BHA#7 ON 4"DP T/515'MD. 21:00 21:30 0.50 CASING N DPRB 17,142.00 RUNPRD DROP 1.75"WELL COMMANDER ACTIVATION BALL. -PUMP DOWN AT 85 GPM,80 PSI. -BALL ON SEAT AT 3.12 BBLS. -SHIFTED CLOSED 2,200 PSI. -MWD SHALLOW HOLE TEST. -280 GPM,490 PSI(GOOD). 21:30 - 00:00 2.50 CASING N DPRB 17,142.00 RUNPRD CONT/TO RIH W/BHA#7 F/515'MDT/6,832' MD. -FILL PIPE EVERY 20 STANDS. 5/29/2013 00:00 - 03:30 3.50 CASING N DPRB 17,142.00 RUNPRD RIH W/CLEANOUT BHA F/6,832'MDT/7" SHOE AT 12,704'MD -210 GPM,980 PSI. -P/U=200K,S/O=152K,ROT=178K. -6K TQ. -STATIC LOSS RATE:3 BPH. 03:30 - 06:00 2.50 CASING N DPRB 17,142.00 RUNPRD CONT.RIH F/12,704'MDT/15,001'MD. -WIPE TIGHT SPOTS,NO ROTATION -13221'MD,13515 MD'. -13920'MD,14230'MD. -14385'MD,14600'MD. -15K-30K OVERPULL. 06:00 - 08:00 2.00 CASING N DPRB 17,142.00 RUNPRD CBU WHILE ROTATING AND RECIPROCATING F/14,710'MD T/14,998'MD. -275 GPM,1650 PSI. -120 RPM,7K TQ. - 665 BBLS PUMPED. Printed 6/17/2013 10:56:13AM North America-ALASKA-BP Page 4 of 9 Operation Summary Report Common Well Name:U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 End Date:6/5/2013 X3-0135D-C:DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 08:00 - 11:30 3.50 CASING N DPRB 17,142.00 RUNPRD CONT RIH F/15,001'MDT/16,426'MD. -WIPE TIGHT SPOTS. -NO MORE THAN 30K DOWN. -REAM WHEN UNABLE TO WORKTHROUGH F/15,820'MD T/16,426'MD. '-275 GPM,1850 PSI. -140 RPM UP,40 RPM DOWN. -7K-10KTQ. 11:30 12:00 0.50 CASING N DPRB 17,142.00 RUNPRD CIRCULATE F/16,331'MD T/16,426'MD. -SIGNS OF PACKOFF. -CIRCULATE UNTIL FREE. -275 GPM,1850 PSI. -140 RPM UP,40 RPM. 12:00 - 16:30 4.50 CASING N DPRB 17,142.00 RUNPRD CONT.RIH F/16,426'MDT/17,503'MD. PUMP AND ROTATE THROUGH VARIOUS TIGHT SPOTS. -270 GPM,1945 PSI. 1-120 RPM,11K TQ. 16:30 - 21:00 4.50 CASING N WAIT 17,142.00 RUNPRD CIRCULATE AND RECIPROCATE F/17,500'MD T/17,453'MD. -270 GPM,1980 PSI. -120 RPM,8K TQ. -SIMOPS: LOAD HYD 521 PIPE INTO SHED. -WAIT ON MUD TRUCKS FOR FLUID SWAP. 21:00 - 23:00 2.00 CASING N DPRB 17,142.00 RUNPRD DISPLACE WELL TO 9.1 PPG POWER PRO • MUD. -270 GPM,1570 PSI. -LOST 15 BBLS OVER ENTIRE DISPLACEMENT -MONITOR WELL FOR 10 MIN(STATIC). -OBTAIN SPR'S 23:00 - 00:00 1.00 CASING N DPRB 17,142.00 RUNPRD BACKREAM OUT OF HOLE F/17,503'MDT/ 17,180'MD. -275 GPM,1675 PSI. -140 RPM,11KTQ. 5/30/2013 00:00 - 01:30 1.50 CASING N DPRB 17,142.00 RUNPRD CONT.TO BACKREAM TO 7"SHOE F/17,180' MD T/16,515'MD. -275 GPM,1610 PSI. -STATIC LOSS RATE:16 BPH. 01:30 - 02:30 1.00 CASING N DPRB 17,142.00 RUNPRD ENCOUNTERED TIGHT SPOT AT 16,515'MD. -275 GPM,1610 PSI. -350 PSI PUMP PRESSURE INCREASE. -4K TQ INCREASE. 02:30 - 09:00 8.50 CASING N DPRB 17,142.00 RUNPRD CONT.TO BACKREAM TO 7"SHOE F/16,515' MD T/12,623'MD'. -275 GPM,1250 PSI. -STATIC LOSS RATE:12 BPH 09:00 - 14:00 5.00 CASING N DPRB 17,142.00 RUNPRD WAIT FOR SHALE STABILIZATION. -11:00 AM STATIC LOSS RATE:8 BPH. • -12:00 PM STATIC LOSS RATE:4 BPH. -MAINTENANCE SIMOPS: -PS-21 SLIPS,MIX PUMPS,TOP DRIVE ELECTRICAL. -ADJUST TIMING ON HYD DUMP VALVE. -INSTALL DRILLING LINE SHEAVE COVER. -DRAWORKS BLOWER AND MOTOR FILTERS. 14:00 - 16:00 2.00 CASING N DPRB 17,142.00 RUNPRD SLIP AND CUT 597'OF DRILLING LINE. -PJSM W/DDI CREW. -CALIBRATE TOTCO,AMPHION,HOOKLOAD AND BLOCK HEIGHT. Printed 6/17/2013 10:56:13AM North America-ALASKA-BP Page 5 of 9 Operation Summary Report Common Well Name:U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 End Date:6/5/2013 X3-0135D-C:DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM 'Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 16:00 - 20:30 4.50 CASING N DPRB 17,142.00 RUNPRD RIH F/12,623'MDT/17,500'MD. -ENCOUNTERED TIGHT SPOTS: -13,818'MD-15K DWN WT. -16,090'MD-20K DWN WT. -16,884'MD-30K DWN WT. -WIPED EACH SPOT TWICE -NO PUMPS OR ROTATION. 20:30 - 23:30 3.00 CASING N DPRB 17,142.00 RUNPRD CBU 3X WHILE ROTATING AND RECIPROCATING F/17,500'MD T/17,404'MD. -270 GPM,1600 PSI. -120 RPM,7-8K TQ. -9.1 PPG IN/9+OUT -INCREASED LUBES FROM 2.5%TO 4%WITH 0.5%LUBE 776 AND 1.0%LO-TORQ. DYNAMIC LOSS RATE:4.5 BPH. -P/U=210K,S/O=135K,ROT=170K,9K TQ. -MONITOR WELL FOR 10 MIN(STATIC) 23:30 - 00:00 0.50 CASING N DPRB 17,142.00 RUNPRD POOH ON ELEVATORS -L/D DP DOUBLES F/17,500'MD T/17,281'MD. _ 5/31/2013 00:00 - 04:00 4.00 CASING N DPRB 17,142.00 RUNPRD POOH F/17,281'MD T/7'SHOE AT 12,704'MD. -TIGHT SPOTS AT 16,740'MD,16,140'& 14,450'MD. .-20K OVERPULL. I-WORKED THROUGH DRY WIPED EACH 1 SPOT TWICE. 04:00 - 04:30 0.50 CASING N DPRB 17,142.00 RUNPRD OPEN WELL COMMANDER CIRC SUB. -VERIFY AND DROP 1.76" ACTIVATION BALL. -SHIFT OPEN AT 2,230 PSI. -STAGE PUMPS UP TO 400 GPM,1370 PSI. -MONITOR WELL FOR 10 MIN(STATIC). -NO LOSSES. 04:30 - 10:00 5.50 CASING N DPRB 17,142.00 ' RUNPRD POOH ON ELEVATORS W/BHA#7 F/12,704' MD T/375'MD. -NO LOSSES. -MONITOR WELL FOR 10 MIN(STATIC). 10:00 - 11:00 1.00 CASING N DPRB 17,142.00 RUNPRD LD BHA#7 PER SLB DD. 11:00 - 12:00 1.00 CASING N DPRB 17,142.00 RUNPRD CLEAN AND CLEAR RIG FLOOR. -PREP PIPE SHED FOR LINER RUN. 12:00 - 14:00 2.00 CASING N DPRB 17,142.00 RUNPRD LOAD AND PREP 4"HWDP. -PREP 4.5"LINER JEWELERY IN PIPE SHED. 14:00 - 18:30 4.50 CASING N DPRB 17,142.00 RUNPRD MU 4.5"LINER ASSEMBLY. -PJSM WITH HES,BAKER,DDI,AND WSL. -MU SHOE TRACK TO 130'MD. -CHECK FLOATS(GOOD). -TORQUE HYD 521 CONNECTION TO 4,700 FT-LBS -NO CENTRALIZERS ON JNTS#1425 -RUN FLOATING CENTRALIZERS ON JNTS #264104 18:30 - 00:00 5.50 CASING N DPRB 17,142.00 RUNPRD 'RIH W/4.5",L-80,12.6#,HYD 521 LINER 'ASSEMBLY F/130'MD T/3,309'MD. -STATIC LOSS RATE:4 BPH. 6/1/2013 '00:00 - 02:30 2.50 CASING N DPRB 17,142.00 RUNPRD RIH W/4.5",L-80,12.6#,HYD 521,LINER ASSEMBLY F/3,309'MD T/4,910'MD. -LOSS RATE:33 BPH. 02:30 - 03:00 0.50 CASING N DPRB 17,142.00 RUNPRD MU LINER HANGER/LINER TOP PACKER ASSEMBLY PER BAKER REP. -INSTALL PAL MIX. • -LINER TOP PACKER 4,941'MD. Printed 6/17/2013 10:56:13AM North America-ALASKA-BP Page 6 of 9 Operation Summary Report Common Well Name:U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 End Date:6/5/2013 X3-0135D-C:DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/me:5/1/2013 10:30:00AM i Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs I Task Code I NPT NPT Depth I Phase Description of Operations (hr) (usft) 03:00 - 04:30 1.50 CASING N DPRB 17,142.00 RUNPRD CIRCULATE 1.5X LINER VOLUME. -STAGE PUMPS UP TO 3 BPM.310 PSI. -115 BBLS PUMPED. -P/U=83K,S/0=80K. -NO LOSSES. 04:30 - 10:00 5.50 CASING N DPRB 17,142.00 RUNPRD RIH W/4"DP F/4,951'MD T/12,640'MD. • -JUST ABOVE THE 7"SHOE AT 12,704' 10:00 - 11:30 1.50 CASING N DPRB 17,142.00 RUNPRD CIRCULATE 1.5X LINER VOLUME. -STAGE PUMPS UP TO 150 GPM,680 PSI. -TOTAL OF 235 BBLS PUMPED. -P/U=171K,S/O 134K,ROT=149K. -10 RPM,6K TQ. -20 RPM.6K TQ. 11:30 - 15:30 4.00 CASING N DPRB 17,142.00 RUNPRD RIH F/12,640'MDT/13,496'MD T TD AT/ 17,503'MD. FILL EVERY 10 STANDS. -P/U=207K,S/O=130K. -TAG TD AT 17,503'. -PU LINER 2'OFF BOTTOM. -LINER AT 17,501'MD. _ 15:30 - 17:30 2.00 CASING . P RUNPRD CBU 3X. -STAGE PUMPS UP TO 120 GPM,1220 PSI. _ 17:30 - 22:00 4.50 CASING P RUNPRD PJSM FOR PUMPING SPACERS PER MI PUMPING SCHEDULE. -DISCUSSED MI PROCEDURE AND ROLES 'AND RESPONSIBILITIES FOR THIRD PARTIES AND DDI. PUMPED OBM SPACER PER MI SCHEDULE. DISPLACE WELL OVER TO MOBM. -150 BBLS OF 8.7 PPG KCL/NACL BRINE AT 130 GPM,1240 PSI. -36 BBLS 7.0 PPG LVT-200 BASE OIL. -50 BBLS OF 9.7 PPG RHELIANT MOBM. -220 BBLS OF 8.7 PPG RHELIANT MOBM. -25 BBLS OF 8.7 HI-VIS RHELIANT MOBM. -BREAK PIPE AND DROP 1.75"BAKER NEUTRAL WEIGHT BALL AND PUMP REMAINDER OF HIGH VIS RHELIANT OBM,10 BBLS. -130 GPM,2300 PSI. -153 BBLS 8.7 PPG RHELIANT. -BALL ON SEAT AT 153.5 BBLS. -PRESSURE UP TO 3,000 PSI,SHIFTED ISOLATION VALVE CLOSED. i I TOTAL FLUID LOSS DURING OBM _CIRCULATION-16 BBLS 22:00 - 23:00 1.00 , CASING ; P RUNPRD SET LINER HANGER/PACKER ASSEMBLY AS PER BOT REP. 23:00 - 00:00 1.00 CASING P I RUNPRD PRESSURE TEST 4.5"LINER TOP PACKER 250 PSI LOW 5 MIN/3,500 PSI HIGH FOR 30 I CHARTED MIN(PASS). od< -SENT TO BP WTL MIKEL SHULTZ FOR AUTHORIZATION. 6/2/2013 00:00 - 02:00 2.00 CASING P i RUNPRD DISPLACE WELL OVER TO 8.6 PPG CLEAN N SEAWATER. n` -250 GPM,1800 PSI. -FCP 920 PSI. 02:00 - 12:00 10.00 CASING P RUNPRD POOH LAYING DOWN DOUBLES F/12,580'MD T/630'MD. Printed 6/17/2013 10:56:13AM North America-ALASKA-BP Page 7 of 9 Operation Summary Report Common Well Name:U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 End Date:6/5/2013 X3-0135D-C:DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs Task Code ' NPT NPT Depth Phase Description of Operations (hr) (usft) 12:00 - 14:00 2.00 CASING P RUNPRD LD 4"DP IN SINGLES F/630'MD. -LD LINER HANGER RUNNING TOOL PER BOT REP. VERIFIED DOG SUB SHEAR INDICATOR 14:00 - 16:30 2.50 CASING P RUNPRD RIH ON ELEVATORS T/5,600'MD W/4"DP FROM DERRICK. 16:30 - 18:00 1.50 CASING P RUNPRD INSPECT DRILLING LINE.CUT AND SLIP 88'. -CALIBRATE BLOCK HEIGHTS. 18:00 - 18:30 0.50 CASING P RUNPRD SERVICE CROWN AND TOP DRIVE. 18:30 - 23:30 5.00 CASING P RUNPRD LD 4"DP 1X1 F/5,600'MD. 23:30 - 00:00 0.50 CASING P RUNPRD PULL WEAR RING. 6/3/2013 00:00 - 02:00 2.00 RUNCOM P RUNCMP RU TO RUN 4.5",13CR-85,12.6#,VT TUBING COMPLETION.-PJSM W/BP,HES,SLB,DDI. 02:00 - 03:00 1.00 RUNCOM P RUNCMP RIH 4.5",13CR-85,12.6#,VT TUBING COMPLETION T/153'MD. 03:00 - 04:30 1.50 RUNCOM P RUNCMP INSTALL AND TEST SAPPHIRE GAUGE AND TEST I-WIRE PER SLB COMPLETION REP 04:30 - 12:00 7.50 RUNCOM P RUNCMP RIH4.5",13CR-85,12.6#,VT TUBING COMPLETION F/153'T/3,452'MD -TEST I-WIRE CONDUCTIVITY EVERY 1,000' MD. 12:00 - 00:00 12.00 RUNCOM P RUNCMP RIH 4.5",13CR-85,12.6#,VT TUBING COMPLETION F/3,452'T/10,353'MD. -MONITORING TRIP VIA THE TRIP TANK -TESTING"I-WIRE"EVERY 25 JTS 6/4/2013 00:00 - 03:00 3.00 RUNCOM P RUNCMP RIH 4.5",13CR-85,12.6#,VT TUBING COMPLETION PER TALLY F/10,353'MD.TO TOL @ 12,567'. -MONITORING TRIP VIA THE TRIP TANK -TESTING"I-WIRE"EVERY 25 JTS PU=160K,SO=120K 03:00 - 05:00 2.00 RUNCOM P RUNCMP SPACE OUT W/PUP JTS,WITH ONE FULL JOINT BELOW THE HANGER. -PU/MU HANGER,RUN I-WIRE THRU HANGER LAND HANGER,-(FMC REP)RUN IN LOCK DOWN SCREWS -RIG UP FOR CIRCULATION 05:00 - 08:00 3.00 RUNCOM P RUNCMP PJSM,REVERSE CIRC 201 BBLS 120° 8.5 PPG SEAWATER @ 4 BPM FOLLOWED BY -128 BBLS 120° 8.5 PPG CORROSION INHIBITED SEAWATER FOLLOWED BY 99 BBLS 120°8.5 PPG SEAWATER 08:00 - 08:30 0.50 RUNCOM P RUNCMP DROP BALL AND ROD -ALLOW TO FALL PER HALLIBURTON PROCEDURE.UNABLE TO SEAT BALL AND ROD IN RHC PROFILE. 08:30 - 13:30 5.00 RUNCOM N DPRB 12,562.00 RUNCMP -ATTEMPT TO PUMP BALL&ROD ON SEAT. WAS NOT ABLE TO GET BALL ON SEAT. -ATTEMPTED TO REVERSE CIRCULATE AND SWITCH BACK TO NORMAL CIRCULATION -STILL UNSUCCESSFUL AT GETTING BALL ON SEAT. -WSL DISCUSSED OPTIONS WITH ANCHORGE. DECISION WAS MADE TO GET WIRELINE ON THE WAY. WHILE WAITING ON SLICK LINE WE PULLED THE HANGER OFF SEAT AND MOVED THE PIPE IN HOPES TO BREAK FREE THE BALL& ROD. Printed 6/17/2013 10:56:13AM North America-ALASKA-BP Page 8 of 9 Operation Summary Report Common Well Name:U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 End Date:6/5/2013 X3-0135D-C:DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 • Spud Date/Time:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UWI: Active datum:U-16 Actual©87.07usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase • Description of Operations (hr) (usft) 13:30 - 14:00 0.50 RUNCOM P RUNCMP SET THE HANGER BACK DOWN AND RILDS PRESSURED UP TO 500 PSI IN 7 STROKES -VERIFIED THE SURFACE LINE UP TO BE CORRECT I-PRESSURED UP PER HALLIBURTON PROCEDURE AND SET THE TNT PACKER 14:00 - 15:30 1.50 RUNCOM P RUNCMP PRESSURE TESTING THE TUBING,PACKER AND THE ANNULUS -250 PSI LOW FOR 5 MIN-GOOD TEST -3500 PSI HIGH TESTS FOR 30 MIN.-GOOD TEST -SENT PRESSURE TEST RESULTS TO WTL MIKE SCHULTZ FOR APPOVAL 15:30 - 16:00 0.50 RUNCOM P RUNCMP HOLD IA PRESSURE AT 3500 PSI BLEED TUBING PRESSURE TO 0 PSI AND SHEAR DCK VALVE PUMP DOWN IA • -20 SPM,3000 PSI PUMP DOWN TUBING -20 SPM,440 PSI •CONFIRMATION THAT SHEAR VALVE IS OPEN 16:00 - 18:00 2.00 WHSUR P RUNCMP P/U T-BAR&DRY ROD IN TWC. PRESSURE TEST TWC FROM BELOW -250/3500 PSI FOR 5/30 MIN TEST -GOOD TEST PRESSURE TEST TWC FROM ABOVE -250/3500 PSI FOR 5/5 MIN TEST -GOOD TEST 18:00 - 21:00 3.00 WHSUR P RUNCMP N/D BOP -REMOVE STRIP-O-MATIC&INSPECT -JET&R/D FLOWLINE,RD CHOKE&KILL LINES -REMOVE BOLTS&PULL 14'RISER -PULL DSA OFF WELLHEAD -PULL PS-21 SLIPS 21:00 - 23:00 2.00 WHSUR P RUNCMP N/U 4-1/8"X 4-1/16"DRY HOLE TREE& ADAPTER FLANGE TEST ADAPTER FLANGE -250 PSI LOW 5 MIN -5000 PSI HIGH 5 MIN -GOOD TEST(CHARTED) 23:00 - 00:00 1.00 WHSUR P RUNCMP TERMINATE I-WIRE PER SLB DIRECTION -RIG MOVE PREPARATION 6/5/2013 00:00 - 01:30 1.50 WHSUR P RUNCMP PRESSURE TEST TREE TO 250/5000 PSI FOR 5/10 MIN CHARTED TEST -GOOD TEST 01:30 - 02:30 1.00 WHSUR P RUNCMP R/U DRILL SITE MAINTENANCE LUBRICATOR. TEST LUBRICATOR TO 250/3500 PSI FOR 5/5 MIN TEST -GOOD TEST 02:30 - 03:30 1.00 WHSUR P RUNCMP PULL TWC W/LUBRICATOR. -R/D LUBRICATOR. PREP FOR DERRICK SCOPE 03:30 - 04:30 1.00 WHSUR P RUNCMP DIESEL FREEZE PROTECT TO 2,200'TVD -R/U AND TEST CIRC LINES TO 250 LOW/ 3500 PSI HI FOR 5/5 MIN EACH(GOOD TEST) -REVERSE CIRC 82 BBLS OF 80°DIESEL AT 2.5 BPM -ICP=600 PSI,FCP=830 PSI Printed 6/17/2013 10:56:13AM North America-ALASKA-BP Page 9 of 9 Operation Summary Report Common Well Name:U-16 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/4/2013 End Date:6/5/2013 X3-0135D-C:DRILL(3,417,665.00) Project:Prudhoe Bay Site:PB U Pad Rig Name/No.:DOYON 25 Spud Date/me:5/1/2013 10:30:00AM Rig Release:6/5/2013 Rig Contractor:DOYON DRILLING INC. UVVI: Active datum:U-16 Actual @87.07usft(above Mean Sea Level) Date From-To Hrs I Task Code NPT NPT Depth Phase • Description of Operations (hr) (usft) _ I 04:30 - 06:00 1.50 WHSUR P RUNCMP ALLOW DIESEL TO U-TUBE -R/D TUBING CIRC LINES -REMOVE KELLY HOSE,BRIDLE UP,R/D MUD PUMP LINES 06:00 - 11:00 5.00 WHSUR P RUNCMP j RU AND PRESSURE TEST DRILL SITE MAINT LUBRICATOR -INSTALL 4"H STYLE BACK PRESSURE VALVE. -SECURE WELL.PREP RIG FOR RIG DOWN -INSTALL FLANGES WITH NEEDLE VALVE W/ GAUGES ON BOTH ANNULI -R/D CIRC HOSES IN CELLAR I _ RELEASE RIGAT 11:00 HRS Printed 6/17/2013 10:56.13AM v' a ii0 MY(0,7 A liD 3NUJ nUGI MNNNEANaa 8 m WWWWW a) 6,06o66 044w .6.6. ���� v�vvvevvv �avov ���� dv v c=Nm8nV0ugrnr, 0 nOOW) 8MEL,- l0r d mmmmm 0m88W882 NN.-... r 0 nn mm WWWm m Wr nnnn AArAr � � V A.' 8888 88 88 80000 $8888 88888 88888 $8888 8 o V M M M. .0§". MMMMM ..... ..... 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Dispatched To: Christine Shartzer(AO CC) Well No U-16 Date Dispatched: 4-Jun-13 Installation/Rig Doyon-25 Dispatched By: C.Ilizaliturri/E.Greblova Data No Of Prints No of CDs l Surveys 2 Perform Letter 1 Logs: VISION Service MD 2in 1 PDF included VISION Service TVDSS 2in 1 PDF included LAS Digital Data Please sign and returnrn to: Analisa Steg , ReceivedBy: BP Exploration(Alaska)Inc. / '4° Petrotechnical~— p, omCenter' amE.Benson Blvd. -- moohvmoo'm^,k00050n Fax:907-564-4005 e-mail address:analisa.steger©bp.com UNDLog Delivery Vl.O'O1/22/2lO r 1 Drilling&Measurements 2525 Gambell Street.Suite 400 Anchorage AR 99503 dA O Schlumberger Tel(907)273-1700 y� �� Fax(907)561-8317 Date: June 4,2013 ;30L0-7 Well Name: U-16 Company: BP Exploration(Alaska),Inc. API Number: 50-029-23485-00-00 AFE Number: X3-01348-C:DRILL Location: X=631,534.51 US Feet;Y=5,960,764.14 US Feet Field: Prudhoe Bay Rig: Doyon 25 Drilling and Measurements Field Support: Operations Manager, Ankur Prakash Field Service Manager, Hector Echeto Drilling and Measurements Field Crew: Cell Managers, Carlos Ilizaliturri Elena Greblova Second Hand, Koshu Fujita SERVICES PROVIDED U-16 Services Services Dates Depth Intervals Directional Survey Service 01-May-13 to 02-May-13 585 feet to 17503 feet TeleScope*Direction&Inclination 01-May-13 to 14-May-13 585 feet to 12709 feet VISION*(Resistivity,Gamma Ray) 06-May-13 to 24-May-13 3522 feet to 17503 feet IMPulse*Direction&Inclination 16-May-13 to 24-May-13 12709 feet to 17503 feet VISION*(Neutron,Density Azimuthal) 16-May-13 to 24-May-13 12709 feet to 17503 feet OPERATING STATISTICS Total MWD Pumping Time: 285.5 hours Total LWD Pumping Time: 245 hours Total MWD Time Below Rotary: 426 hours Total LWD Time Below Rotary: 365.5 hours Total MWD Depth Interval: 14217 feet Total LWD Depth Interval: 12705 feet Total MWD Runs: 5 Total LWD Runs: 3 Total JOB PERFORMANCE Directional U-16 The final MWD survey point was located at 17272.44 feet with an inclination of 95.00 degrees and an azimuth of 175.90 degrees. This direction and inclination was projected from the final survey point to TD, which resulted in the following bottom-hole location. Measured Depth: 17503 feet True Vertical Depth: 8908.83 feet 1 Formation Evaluation Schlumberger 12-1/4 inch Surface Section: The 12.25"surface hole section of the well was drilled from 120 feet to 3322 feet MD in three runs.On the first run the well was drilled from 120 feet to 585 feet MD with dumb iron and motor.The BHA was pulled out to pick up smart tools.On the second run,the well was drilled from 585 feet to 1329 feet MD.The BHA was pulled out to change the motor bend.On third run,the well was drilled from 1329 feet to 3522 feet MD. A motor was used for directional control during the runs.Gamma Ray data was supplied in real- time and from memory once the tool was retrieved. The final measured bottom-hole temperature was 78.6 degrees Fahrenheit. 8-3/4 inch Intermediate Section: The intermediate hole section of the well was drilled from 3522 feet to 12709 feet MD in one run. A motor was used for directional control during the run. Resistivity, Gamma Ray,and APWD data were supplied in real-time and from memory once the tools were retrieved. The final measured bottom-hole temperature was 159.8 degrees Fahrenheit. 6-1/8 inch Production Section The production lateral section of the well was drilled from 12709 feet to 17503 feet MD in two runs. PowerDrive Archer was used for directional control during the runs. Directional Resistivity, Gamma Ray, Azimuthal Density, and Neutron data were supplied in real-time and from memory once the tools were retrieved. The fmal measured bottom-hole temperature was 196.7 degrees Fahrenheit. Innovation Implementing compressed ORION data points in our Real-Time frames when high tier formation evaluation services are requested or high ROPs are anticipated is recommended. ORION data compression techniques will provide excellent data density for all evaluation needs allowing more data channels to be sent uphole and greater log detail to catch fine geological features. Schlumberger Oilfield Services — Drilling & Measurements appreciates the opportunity to provide BP Exploration(Alaska)with MWD and LWD services. Sincerely, 409 i s Ilizalitu MWD/LWD Engineer Schlumberger Drilling&Measurements 2 0 ,.' l ,^ N to .. 1,�Jy V Op pp yyy ¢m y m y 8 V 8 a V o ?{�A 4= ��./ i bN N3 `N' A0 .'nF,a ONa`y'nC^o V8Fi^ .^�N,9,"-'' hi21�g L5-7,g.^e m tV fD O t� tV N `�! 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Ti!. r„'..g tWA fe $;2g.71 .1;,71o bKl Bt�3rm iiE 22;8 mmmmm VI;FIg2 22t;$$ Iln'ai226; mm o t v Hm 0 a w 0 mtry, :.Sg''2g N..-', r LL LL N pY .>„,,- . $ U 1,KTmN i'te” y� h8n2A 2.TOyDO nyG61 pRI' gm"' hMIMmHoo bmNm '5131 RIP' mDA mmo� o2mmrmmg° nnsrO1mN O S I O N ! s g 8 �� O c E r c E C tt ✓ 4 aa 0 cv-i&%'I%%i s� THE STATE Alaska a Oil and Gas �� �f�Ll 1S� Conservation Commission Ta GOVERNOR SEAN PARNELL 333 West Seventh Avenue O ,:•�� Anchorage, Alaska 99501-3572 ALAS Main: 907.279.1433 Fax: 907.276.7542 Ken Allen Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU U-16 BP Exploration (Alaska), Inc. Permit No: 213-026 Surface Location: 190' FSL, 2465' FEL, SEC. 18, T11N, R13E, UM Bottomhole Location: 69' FNL, 2658' FEL, SEC. 23, T11N, R12E, UM Dear Mr. Allen: Enclosed is the approved application for permit to drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, 1t Cathy Foerster Chair DATED this /1 day of March,2013. STATE OF ALASKA �C '� ALA OIL AND GAS CONSERVATION COMP, ION FEB E2 12013 PERMIT TO DRILL 20 AAC 25.005 AOGCC 1 a.Type of work: 1 b.Proposed Well Class: ®Development Oil ❑Service-Willi • ®Single Zone 1 c.Specify if well is proposed for: ®Drill • ❑Lateral 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone 0 Coalbed Gas 0 Gas Hydrates 0 Redrill 0 Reentry 0 Exploratory 0 Service-WAG 0 Service-Disp 0 Geothermal 0 Shale Gas 2.Operator Name: 5.Bond ®Blanket 0 Single Well 11.Well Name and Number: BP Exploration(Alaska) Inc. Bond No 6194193 ' PBU U-16 • 3. Address 6.Proposed Depth: 12.Field/Pool(s) P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 17821' ' TVD 8939' ' Prudhoe Bay/Prudhoe Bay• 4a.Location of Well(Governmental Section): 7.Property Designation(Lease Number): Surface: ADL 028283&047451 190' FSL,2465' FEL, Sec. 18,T11N, R13E, UM ' Top of Productive Horizon: 8.Land Use Permit: 13.Approximate Spud Date: 1352' FNL,297' FEL, Sec.23,T11N, R12E, UM May 1, 2013 Total Depth "2-3 .X y, ?Z 4.'3 9.Acres in Property: 14.Distance to Nearest Property: 69' FNL,2658' FEL, Sec./20,T11N, R12E, UM 2560 23340' - 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: 88.56' feet 15.Distance to Nearest Well Open Surface: x 631534• y-5960763' Zone- ASP4 GL Elevation above MSL: feet to Same Pool: 800' 16.Deviated Wells: Kickoff Depth: 300' feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 101 degrees Downhole: 3600 Surface: 2697 • 18. Casing Program Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks _ Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 20" 94# H-40 80' Surface Surface 80' 80' 260 sx Arctic Set(Approx.) 12-1/4" 9-5/8" 40# L-80 BTC 3685' Surface Surface 3658' 2879' 929 sx DeepCrete, 363 sx Class'G' 8-3/4" _ 7" 26# L-80 VamTop 12605' Surface Surface 12605' 8907' 435 sx LiteCrete', 182 sx Class'G' 6-1/8" 4-1/2" 12.6# 13Cr80 Hydril521 5366' 12455' 8784' 17821' 8939' Uncemented Slotted Liner,Swell Packers 19. PRESENT WELL CONDITION SUMMARY(To be completed for Redrill and Re-entry Operations) Total Depth MD(ft): Total Depth TVD(ft): Plugs(measured): Effective Depth MD(ft): Effective Depth TVD(ft): Junk(measured): Casing Length Size Cement Volume MD TVD Conductor/Structural Surface Intermediate Production Liner Perforation Depth MD(ft): Perforation Depth TVD(ft): 20.Attachments: 0 Property Plat ®BOP Sketch ®Drilling Program 0 Time vs Depth Plot 0 Shallow Hazard Analysis ®Diverter Sketch 0 Seabed Report ®Drilling Fluid Program 1020 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date 22. I hereby certify that the foregoing is true and correct: Contact Ryan Ciolkosz,564-5977 Printed Name Ken Allen Title Engineering Team Leader Email Ryan.Ciolkosz@bp.com Signature ,---, ? Phone 564-4366 Date / 0//.�' Commission Use Only Permit To Drill ) , API Number: /l�' Permit Approv I D e: See cover letter for Number: /--r `.) �%2-,c 50-CZ-?-2.511 —3`6%" J 9)\"\NI. other requirements: Conditions of Approval: If box is checked,well may not be used to explore for,test,or produce coalbed methane,gas hydrates,or gas Id contained shales: Other: p3 0 CS , ±0 3SUb P 5 ( Samples Req'd 0 YesNo Mud Log Req'd: ❑Yes El No r1 14. acid' v vd ��v H2S Measures: 121/Yes , ( 12/No❑, No Directional Survey Req'd: [ Yes 0 No r 7 p��G ,��,0 33' \Spacing exception req'd: 0 Yes u No inclination-only svy Req'd: 0 Yes 'No `GD U pCr i ) APPROVED BY APPROVED BY A, / COMMISSIONER THE COMMISSION Date 3 - 77-�2 Forrr 1>� f 1 r •,s This permit is valid for 24 months from the date of approval(20 AAC 25.005 )) Submit Form and Attact�ents in pr by 0 To: Alaska Oil &Gas Conservation Commission From: Ryan Ciolkosz, ODE Date: February 20, 2013 Re: U-16 Permit to Drill The U-16 well is scheduled to be drilled by Doyon 25 in May 2013. The grassroots well is a horizontal producer targeting the Ivishak Zone 4. The planned well has three hole sections. Surface casing will be set in competent shale in the lower SV4 to isolate the permafrost and running gravels The Intermediate hole is planned as a casing string which top sets the Sag River formation. The production interval will be completed with a cement-less liner using sliding sleeves and swell packers with a cemented liner as a contingency if hole problems are encountered. The liner is designed to allow selective production along the horizontal lateral to maximize oil recovery and minimize intervention requirements. The maximum anticipated surface pressure from the Ivishak/Sag with a full column of gas from TD to - surface is -2623 psi (assumes 7.65 ppg as max pore pressure). This well will be drilled by Doyon 25 using their 5000 psi four preventer BOP stack (3 rams and an annular). The BOP rams and annular will be tested to 3500 psi. In addition to a planned well summary, a directional plan and proposed completion diagram is attached to the permit application. If there are any questions concerning information on U-16, please do not hesitate to use the contact information below. Ryan Ciolkosz Office: 907-564-5977 Cell: 907-244-4357 Email: rvan.ciolkoszta7.bp.com Attachments: Well Schematic Directional Plan BOPE Equipment Schematics Diverter Line Layout Diagram U-16 PTD Page 1 2/20/2013 Planned Well Summary Well U-16 Well Oil Producer Target Ivishak Type Objective Current Status Grass Roots Well Estimated Start Date: 05/1/2013 Time to Complete: 53 Days Surface Northing Easting Offsets TRS Location 5960763 . 631534 • 190' FSL /2465' FEL 11N 13E sec 18 Northing Easting TVDss Offsets TRS Tgt 5959084 623502 -8924' 1352' FNL / 4982' FWL 11N 12E sec 23 TSAD BHL 5955189 621208 -8850' 69' FSL / 2658' FEL 11N 12E sec 23 Planned KOP: 300' MD/211' TVDss Planned TD: 17,821' MD/8850' TVDss Rig: Doyon 25 BF-RT: 40.8' RTE (ref MSL): 88.56 Directional — Schlumberger P15 KOP: 300' MD Maximum Hole Angle: -53° in the 8-3/4" intermediate section -100.85° in the 6-1/8" production section Close Approach Wells: All offsets pass major risk analysis Survey Program: Surface to-700 ft MD =GYD-GC-SS(single shot gyro) -700 ft MD to TD = MWD+IFR+MS Nearest Property Line: 23,340 ft Nearest Well within Pool: -800 ft to U-06B U-16 PTD Page 2 2/20/2013 Formation Tops & Pore Pressure Estimate (SOR) Estimated Depth Fluid Most Likely 140.1 a Formation Formation Top Uncertainty Type Pore Pressure (pfj 1 (TVDss) (+/-TVD ft) (for sands) (EMW ppg) SV6 1,524.0 20 Water 8.40 v.(.c, BPRF 1,917.0 50 8.40 EOCU 2,141.0 50 Water 8.40 SV5 2,170.0 20 Water 8.40 SV4 2,330.0 50 Water 8.40 q 9 5/8"surf csg 2,790.0 20 Water 8.40 ` ,-,1 SV3 2,840.0 20 Water 8.40 c� SV2 3,020.0 50 Water 8.40 /' Al SV1 3,360.0 20 Water 8.70 UG4 3,770.0 20 Water 9.00 UG4A 3,790.0 20 Water 9.00 UG3 3,970.0 20 Water 9.10 UG1 4,385.0 20 Water 9.10 UG_MA 4,730.0 20 Water 9.00 UG_M B1 4,770.0 20 Water 9.00 UG_MB2 4,815.0 20 Water 9.00 UG_MC 4,900.0 20 Water 9.00 NA 4,965.0 20 Water 8.80 NB 4,995.0 20 Water 8.80 /.o NC 5,035.0 20 Water 8.80 9 V NE 5,045.0 20 Water 8.80 NF 5,090.0 20 Water 8.80 OA 5,160.0 20 Water 8.80 OBa 5,205.0 20 Water 8.80 OBb 5,240.0 20 Water 8.80 OBc 5,290.0 20 Water 8.80 OBd 5,340.0 20 Water 8.80 OBe 5,425.0 20 Water 8.80 OBf 5,465.0 20 Water 8.80 OBF_Base 5,510.0 20 9.40 /D, CM2 5,870.0 30 10.00 CM 1 6,320.0 30 10.00 THRZ 6,715.0 30 10.00 LCU 6,900.0 30 10.00 TMLV 6,900.0 30 10.00 /p - TKNG 7,305.0 50 10.00 TJG 7,390.0 50 10.00 TJF 7,800.0 50 10.00 U-16 PTD Page 3 2/20/2013 /,1) / s� IJ Y; TJE 7,970.0 50 10.00 TJD 8,205.0 50 10.00 TJC 8,510.0 50 10.10 TJB 8,650.0 50 10.20 TJA 8,720.0 50 10.20 TSGR 8,810.0 50 Water 7.65 li 7"intermed csg 8,815.0 50 Water 7.65 /2. TSHA 8,845.0 50 7.66 TSHB 8,886.0 50 7.66 d 6, TSHC 8,906.0 50 7.66 TSHD 8,920.0 50 7.66 TSAD/46P 8,924.0 50 Oil 7.67 45P 8,949.0 50 Water 7.67 44N 8,987.0 50 7.67 44P 8,989.0 50 Water 7.67 43N 9,022.0 50 7.67 43P 9,028.0 50 Water 7.67 43P 9,004.0 50 Water 7.67 43N 8,998.0 50 7.67 44P 8,982.0 50 Water 7.67 44N 8,980.0 50 7.67 45P 8,948.0 50 Water 7.67 Fault 2(170) 8,934.0 50 Oil 7.67 Fault 3(131) 8,916.0 50 Oil 7.67 45P 8,919.0 50 Oil 7.67 I Fault 4(134) 8,927.0 50 Oil 7.67 45P 8,920.0 50 Oil 7.67 TD 8,850.0 50 Oil 7.67 S-7 Casing/Tubing Program Hole Casing/ Wt/Ft Grade Conn Length Top(ft) Bottom (ft) Size Tbg O.D. (ft) MD/TVDss MD/TVDss - 20" 94# H-40 - 80 Surface/-47.8 80/33 12-1/4" 9-5/8" 40# L-80 BTC 3658 Surface/-47.8 3658/2790 8-3/4" 7" 26# L-80 VamTop 12605 Surface/-47.8 12605/8818 6-1/8" 4 1/2" 12.6# 13Cr-80 521 i1 5366 12455/8695 17821/8850 Tubing 41/2" 12.6# 13Cr-80 VamTop 12450 Surface 12450/8691 Mud Program Surface Hole Mud Properties: Drilplex Spud Mud 12-1/4" Hole Section Density PV YP API FL Chlorides Funnel Depth Interval PK (cp) Ib/100 ft2 m1/30min mg/1 pH Viscosity sec/qt 0'-Section TD 8.6-9.4 ' 30-50 40-80 10 <1000 10.8 60-120 Intermediate Mud Properties: LSND 8-3/4" hole section U-16 PTD Page 4 2/20/2013 Depth Interval Density PV YP API FL HTHP FL MBT pH (ppg) 3658'-8161' 9.2-9.8 _ 12- 18 20-28 <6 NC <18 9- 10 8161' -TD 10.2-10.4 - 12-22 20-28 <4 <10 <20 9- 10 Production Mud Properties: Water Based Polymer Fluid 6-1/8" hole section Density PV YP Low Shear Depth Interval (ppg) (cp) (Ib/100ft2) API FL Rate MBT pH Viscosity 12605' -TD 8.5-8.7 _ <12 10 -20 >10 >15000 <4 8-9.5 Logging Program 12-1/4"Surface: Sample Catchers- not required for surface hole Drilling: Dir/GR Open Hole: None Cased Hole: None 8-3�4" Intermediate: Sample Catchers—as required by Geology Drilling: Dir/GR/Res • Open Hole: None Cased Hole: None 6-1/8" Production: Sample Catchers—as required by Geology Drilling: Dir/GR/Res/Neu/Den • Open Hole: None Cased Hole: None Cement Program Casing Size 9-5/8"40#, L-80 Surface Casing Lead: Open hole volume+350%excess above BPRF, 40%excess below BPRF. Port collar Basis: used if hole conditions dictate Lead TOC: Surface Tail: Open hole volume+40% excess + 80 ft shoe track Tail TOC: 900 ft MD above casing shoe Total Cement Lead 598 bbls, 3361 cuft, 929 sks of 11.0 ppg DeepCRETE, Yield: 3.62 ft3/sk Volume: Tail 75.2 bbls, 421 cuft, 363 sks of 15.8 ppg Class G, Yield: 1.16 ft3/sk Casing Size 7" 26#, L-80 Intermediate Casing Basis: Lead: Open hole volume + 30%excess Lead TOC: 1000' MD below 9-%"casing shoe Tail: Open hole volume+30%excess +80 ft shoe track Tail TOC: 1000' MD above casing shoe ( h U-16 PTD Page 5 2/20/2013 Total Cement Lead 238 bbls, 1341 cuft, 435 sks of 11.5 ppg Litecrete, Yield: 3.08 ft3/sk Volume: Tail 38.1 bbls, 212 cult, 182 sks of 15.8 ppg Class G, Yield: 1.17 ft3/sk Casing Size 4.5" 12.6#, 13Cr-80 Production Liner Basis: N/A(cementless liner) Surface and Anti-Collision Issues Surface Shut-in Wells: No wells required shut-in to move the rig on/off the U-16 slot No wells require shut-in for anti-collision issues Hydrogen Sulfide U-Pad is considered an H2S site. Recent H2S data from the pad is as follows: Well Name H2S Level Date of Reading #1 Closest SHL Well H2S Level U-12 14 ppm 1/1/2011 #2 Closest SHL Well H2S Level U-09 150 ppm 3/8/2011 #1 Closest BHL Well H2S Level U-14 18 ppm 1/4/2011 #2 Closest BHL Well H2S Level U-07 14 ppm 4/9/2011 Max. Recorded H2S on Pad/Facility U-09 180 ppm 5/6/2001 Faults Formation Where Encounter Fault MD Intersect TVDss Intersect Est.Throw Throw Uncertainty Direction Fault#1 -Kingak(NOT NA NA 30' West 100 ft. PENETRATED) Fault#2-Ivishak(POSSIBLE TIP 13,435' -8,970.0 10-20' North 100 ft. OUT) Fault#3-Ivishak(POSSIBLE TIP 14,400' -8,930.0 10-20' West 100 ft. OUT) Fault#4-Ivishak 16,100' -8,927.0 20-30' North 100 ft. Fault#5-Ivishak(NOT PENETRATED) NA NA 10-20' East 100 ft. Fault#6 Ivishak(NOT NA NA 20-30' West 100 ft. PENETRATED) Fault#7-Ivishak(NOT NA NA 30' South 100 ft. PENETRATED) Drilling Waste Disposal • There is no annular injection in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject - at DS-04. Any metal cuttings will be sent to the North Slope Borough. U-16 PTD Page 6 2/20/2013 • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS-04 for injection. Haul Class I waste to DS-04 and/or Pad 3 for disposal/Contact the GPB Environmental Advisors (659-5893)for guidance. Well Control The 12-1/4" surface hole will be drilled with a diverter. (See attached diverter layout)The 8-3/4" and the 6- 1/8" hole sections will be drilled with well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind/shear rams, and annular preventer capable of handling the maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to 3500 psi. BOP test frequency for U-16 will be 14 days with function test every 7 days. Except in the event of a significant operational issue that may effect well integrity or pose safety concerns, an extension to the 14 day BOP test period should not be requested. 8-3/4" Intermediate Interval Maximum anticipated BHP 3504 psi at @ TSGR at 8810' TVDss(7.65 ppg EMW) Maximum surface pressure 2623 psi (.10 psi/ft gas gradient to surface) 25 bbls with a 12.7 ppg frac gradient Kick tolerance Assumes a 0.5 ppg kick intensity over the anticipated 7.65 ppg pore pressure at interval TD with a 10.4 ppg MW. Planned BOP test pressure Rams test to 3500 psi/250 psi Annular test to 3500 psi/250 psi Integrity Test—8-3/4" hole LOT after drilling 20'-50' of new formation below previous shoe 7" Casing The upper VBRs will be changed to 7" rams to accommodate the 7" casing. 6-1/8" Production Interval Maximum anticipated BHP 3600 psi @ lvshak at 9,028'TVDss(7.67 ppg EMW) • Maximum surface pressure 2697 psi (.10 psi/ft gas gradient to surface) • Infinite with >9.0 ppg frac gradient Kick tolerance Assumes a 0.5 ppg kick intensity over the anticipated 7.67 ppg pore pressure in the Sag/Ivishak with an 8.5 ppg MW. Planned BOP test pressure Rams test to 3500 psi/250 psi Annular test to 3500 psi/250 psi Integrity Test—6-1/8" hole FIT after drilling 20'-50' of new hole, target>10 ppg FIT 4-1/2" Liner Top Packer 3500 psi surface pressure Test Planned completion fluids 8.5 ppg Seawater/6.8 ppg Diesel Variance Request To avoid the risk of plugging the flow line with large rocks and wood encountered while drilling surface hole, it is requested to drill without a flow paddle for the first portion of the surface hole. After drilling past the larger rocks and wood sections, the flow paddle will be put back in the flow line(<1000 ft). Procedures/Safeguards with paddle removed: • Fluid levels will be monitored in the pits for both gains and losses while drilling. Alarms will be set to indicate if gain or loss of more than 5 bbls has occurred. • The well will be monitored for flow when the pumps are off at each connection. • The planned 8.8-9.4 ppg fluid will provide over balance to formation fluid. U-16 PTD Page 7 2/20/2013 U-16 OPERATIONS SUMMARY U O SSU AR Pre-Rig Work: 1. Set a 20" conductor. Weld an FMC landing ring for a Gen 5 well head • 2. Obtain SBHP from P-28 prior to spud. 3. If necessary, level the pad and prepare location for rig move. 4. Remove well houses as necessary. Rig Operations: 1. MIRU. NU diverter spool &riser and function test. PU 5"/4"drill pipe as required and stand back in derrick. Take on 8.6 ppg DrilPlex Drilling fluid 2. RU Gyro. MU 121/4" drilling assembly with MWD/GR. Spud and directionally drill surface hole to base of permafrost, perform short trip to surface. RIH drill to TD and perform short trip to base of permafrost. RIH to TD and CBU or until hole is clean, then POOH and lay down BHA. 3. Run and cement the 9-%", 40#, BTC, L-80 casing to surface, displacing cement with mud. Pressure test the 9-%" casing to 3,500 psi for 5 minutes. PU 4"/5"drill pipe as needed. 4. ND diverter spool and NU and test casing/tubing head. NU BOPE (Configured from top to bottom: annular preventer, 2-7/8" x 5-1/2" VBR, blind/shear, mud cross, 2'/8" x 5-1/2"VBR). Test rams @ 3,500 psi/250 psi, and annular to 3500 psi/250psi. 5. MU 8-3/4" drilling BHA with MWD/GR/RES with well commander and RIH to float collar. Pressure test the 9-%" casing to 3,500 psi for 30 minutes. 6. Drill shoe track and displace well to 9.4 ppg LSND drilling fluid. Drill new formation to 20-50' below 9-%" shoe and perform LOT. 7. Drill ahead to+/-200' and above the OBF Base, weight up mud to 10.2 ppg. Continue to weight up mud to 10.4 ppg+/-200' MD above top of Kingak 8. Continue drilling to TD at the Top SAG. At TD, CBU, and condition hole as necessary to run 7" casing. 9. Change upper rams to 7" casing rams and test to 3500 psi high and 250 psi low. 10. RU and run 7" 26#L-80 VAM TOP HC casing to TD and Cement in place as per well plan. Pressure test the 7" casing to 3,500 psi for 30 minutes. Change out upper rams to 2-7/8" x 5-1/2"VBR and test 11. PU 6-W drilling BHA assembly with MWD/GR/Resistivity/Density/Neutron/Porosity with well commander and RIH to the landing collar. Drill out shoe track to the top of the shoe. Displace the well to 8.6 ppg reservoir drilling fluid. 12. Drill out shoe and 20'—50' of new formation and perform the planned FIT. Drill build and lateral hole section. MADD pass as necessary, RIH to TD, POOH on elevators. 13. MU and run 4-%2" 12.6#13CR Hydril 521 liner with swell packers and sliding sleeves to TD. Swap the well the MOBM with liner on bottom. U-16 PTD Page 8 2/20/2013 14. Set liner hanger and liner top packer and displace well to clean seawater above the liner top. POOH, L/D the liner running tool. Pressure test liner top packer to 3,500 psi for 30 minutes. 15. R/U and run a 4-%2", 12.6#, 13CR, VAMTOP tubing completion with GLMS. Space out and land the tubing with tubing tail inserted into the liner tieback sleeve. Make up tubing hanger per FMC Rep. Land the tubing hanger. 16. Reverse circulate filtered seawater and corrosion inhibitor into the tubing x casing annulus. Drop ball/rod and set packer and individually test the tubing and annulus to 3,500 psi for 30 minutes. Record each test. 17. Install TWC and test to 3500 psi. Nipple down the BOPE. Nipple up the adapter flange and double master and test to 5,000 psi with diesel. Pull TWC with lubricator. 18. Freeze protect the well to—2,200' TVD and allow diesel to U-tube reaching equilibrium. 19. Install a BPV and test to 3500 psi from below. 20. Secure the well. Rig down and Move Off. Post-Rio Work: 1. PuII BPV 2. MIRU slickline. Pull the ball and rod/ RHC plug. Install generic GLM design 3. Coil function Sliding Sleeves and flowback with ASRC 4. Pump Scale Inhibition Treatment 5. Blue Goo 9-%"x 20"annulus 6. Install well-house and instrumentation and flowline. U-16 PTD Page 9 2/20/2013 U-16 Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE I. Well Control / Reservoir Pressures: A. Surface Hole: No overpressure is expected in the surface hole and hydrates are not expected on U pad. B. Intermediate Hole: The SV1 and Ugnu are expected to be over pressured at 9.1 ppg. A minimum mud weight of 9.2 ppg will be utilized to provide adequate over balance. C. Intermediate Hole: Pore pressure is anticipated to be 10 ppg beginning in the CM2 at 5870 TVDss. Drilling fluid density will increase to 10.2 ppg prior to drilling into the CM1 and remain over balanced to . predicted pore pressure throughout the interval. A minimum kick tolerance of 25 bbls should be achieved prior to drilling interval. D. Production Hole: The pore pressure in the production interval is anticipated to be under pressured . due to offset well production with limited injection support. The highest anticipated pore pressure is 7.67 ppg. Expected FIT provides an infinite kick tolerance. The interval will be drilled with a substantial over balance utilizing an 8.5 ppg fluid. II. Lost Circulation/Breathing A. Surface Hole: Lost circulation is considered a low probably and is rare on U-pad. B. Intermediate Hole: Lost circulation is considered a moderate risk with an unexpected, but possible dual fault tip out in Colville. Utilize good hole cleaning practices to avoid high ECD and prevent pack- off potential which could induce breathing. C. Production Hole: Breathing and/or lost circulation is a high possibility due to 3 fault crossings, 2 of which are fault tip outs with -20-30 ft of throw. There are also 3 faults near the U-16 wellbore that establish the drillers polygon. Do not drill beyond the drillers polygon without prior approval. If lost circulation becomes a problem, follow the LCM decision tree provided in the drilling program. Utilize good hole cleaning practices to avoid high ECD and prevent pack-off potential which could induce breathing. III. Integrity Testing �d' .,�+p f'"K'� + .s��'.r a7. .. o `t `�+M > 9-%"Shoe 20'-50'from the 9-5/8"Shoe LOT 12.7 ppg minimum(25 bbls) 9.0 ppg minimum(infinite) 7"shoe 20'-50'from the 7"shoe FIT >10 ppg target(infinite) IV. Hydrogen Sulfide A. As U-Pad is considered an H2S site, refer to the ADW "Hydrogen Sulfide" SOP for the appropriate operational guidelines. The max recorded H2S readings on the pad were 180 ppm in U-09 May 2001. U-12 recorded 14 ppm and U-09 recorded 150 ppm 3/8/2011 (closest wells at surface with H2S samples). V. Faults TVDss Throw Formation Where Encounter Fault MD Intersect Intersect Est.Throw Direction Uncertainty Fault#1 -Kingak(NOT NA NA 30' West 100 ft. PENETRATED) Fault#2-Ivishak(POSSIBLE TIP 13,435' -8,970.0 10-20' North 100 ft. OUT) Fault#3-Ivishak(POSSIBLE TIP 14,400' -8,930.0 10-20' West 100 ft. OUT) Fault#4-Ivishak 16,100' -8,927.0 20-30'" North 100 ft. Fault#5 Ivishak(NOT NA NA 10-20' East 100 ft. PENETRATED) U-16 PTD Page 10 2/20/2013 • Fault#6-Ivishak(NOT NA NA 20-30' West 100 ft. PENETRATED) Fault#7-Ivishak(NOT NA NA 30' South 100 ft. PENETRATED) VI. Anti-Collision Issues A. The closest wells to U-16 are: U-01 (32ft), U-02 (45ft), U-03 (155ft) which are all in surface hole. All wells pass major risk critera CONSULT THE U-PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION. U-16 PTD Page 11 2/20/2013 TREE= 4-1/16"5K CIW-DblMstr ..WELLHEAD= FMC U -1 6 SAFE )TES:4-1/2"CHROME TBG ACTUATOR= KB.ELEV= TBD BF.ELEV= TBD KOP= Max Angle= Datum M3= ' L2,200' , 4 'X NP,Et= "� Datum TVD= 8,800'SS STI_ T MD TVD DEV_1/2TYPE VLV3.813 LATCH FORT DOTE _ 9-5/8"CSG,40#,L-80, ID=8.861' ^ 3658' 5 5100 3645 52 KGB-2 DCK-2 SBK-2C 1" 4 8900 5703 52 KGB-2 DMY SBK-2C 1" 3 10500 6927 35 KGB-2 DMY SBK-2C 1" 2 11600 7880 35 KGB-2 DMY SBK-2C 1" tit `--.--.7 H 1 12400 8572 35 KGB-2 DMY SBK-2C 1" ,rhP) _ 12566 8880 35 KGB-2 DMY SBK-2C 1" i 12476' —4-1/2"X NIP,ID=3.813" Z 12506' —7"X 4-1/2"HES TNT PKR I Ir 12536' —I4-1/2"X NIP,ID=3.813" 1 l_12566'i-41/2"x 1"GLM I I 12596'-14-1/2"X NIP,ID=3.813" 4-1/2"TBG,12.6#,13CR-85,0152 bpf,ID=3.958' —{ 12621' j - I 126W -IT'X 5'BKR ZXPN LTP,FLEX LH \' lik mi 12621' 1-14-1/2"WLEG,ID=3-958" 17"CSG,26#,VAMHC, L-80, 0383 bpf,ID=6 276' J--I 12606 1—/ A SWELL PACKERS I I 1 ►4 NO# SIZE Top Depth MIN ID ' 4-1/2"13Cr HES SLIDING SLEEVES,ID=3.813" J I I 12 4-1/2" 3.958" ►MI 11 4-1/2" 3.958" SIZE NO# Top Depth ID DATE I� I I 10 4-1/2" 3.958" 4-1/2" 8 3.813" ► 9 4-1/2" 3.958" 4-1/2" 7 3.813" ►44 8 4-1/2' 3.958" 4-1/2" 6 3.813" j I I 7 4-1/2" 3.958" 41 4-1/2" 5 3.813" P. 6 4-1/2" 3.958" 4-1/2" 4 3.813" ► 5 4-1/2" 3.958" 4-1/2" 3 3.813" I I I 4 4-1/2' 3.958" 4-1/2" 2 3.813" ® IN.t 3 4-1/2" 3.958" 4-1/2" 1 3.813" 1 ® ►t 2 4-1/2" 3.958" ®I I I P.-4I 1 3-1/2' 2.992" I 1 10. 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TRANSMITTAL LETTER CHECKLIST WELL NAME l 4� PTD# .2 / 5 C) t/ Development Service Exploratory Stratigraphic Test Non-Conventional Well / FIELD: g„,p7.„6„,___ ( POOL: (?�/`�C��' t Check Box for Appropri Iter/Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (If last two digits in Permit No. ,API No. 50- - - API number are between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to produce/inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Non-Conventional Please note the following special condition of this permit: Well production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the Commission to obtain advance approval of such water well testing program. 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