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212-138
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. al a- j 3 Well History File Identifier Organizing (done) E Two-sided ❑ Rescan Needed RE AN: OVERSIZED: NOTES: 711Items: ❑ Maps: yscale Items: ogs: ❑ Poor Quality Originals: ❑ Other: ❑ Other: ,A4P BY: 4121. Date: /APO/ /s/ Project Proofing BY: M_ Date: F 0 /s/ u Scanning Preparation x 30 = ;_I + can = TOTAL PAGES O 0 (Count does not include cover sheet) BY: Maria Date: !a. I q `L.- Is/ Production Scanning Stage 1 Page Count from Scanned File: ci7(Count does include cover eet) Page Count Matches Number in Scannin Preparation: YES y1/1NO BY: al" Date: f `5. /q `4 / /Stage 1 If NO in stage 1, page(s)discrepancies werellfound: YES NO BY: Maria Date: /s/ Stage 2 Additional Well Reports: YES NO TOTAL PAGES: Digital version appended by: Meredith Michal Date: /s/ Final Page Count: Stage 1 + Stage 2: TOTAL PAGES: Scanning is complete at this point unless rescanning is required. ReScanned BY: Maria Date: /s/ Comments about this file: Quality Checked 7/8/2014 Well History File Cover Page_20140708.doc 9 a a U a LL a q o a o b 0 z z r z c �I �I 0 2I �I g O as 0 0 > 0 0 ) v) 2 N 0 1: 22 y y 2 2 H r2 2 ~ o 5 a) a) q >L21 co m =� _� =I =I =I I� o Z 0 to Q Li Z 0 0 0 0 Z N O U) y z Z y E•ai � E � NI NI NI �I ro-1 �I z E _z 0 co coo Cu0 0 0 0 0 0 0 } c N In (A F. y LL - LLi �i �� Lei ILi LLI < I as 5 5 c Cu E it 2 LL= = 2 2 2 2 z as o 2 o O -O 0 0 0 0 0 0 W -to < o J N O w co N_ U)N_ N_ N_ N_ N_ N_ N_ O c p N N Z 0 O C N N N N O a C0 O N N m N m N N N N N N N a7 y 0 Q� 0� Il i LL Q LL Q w � LL Q W 0 w LL Q y a° .0� U� U� U� U� U� U� U CL,,,,,U) Ug U U O co Cuc c 'c 'c 'c 'c 'c E 0 'c c!? c E ` co ;o m O o0 20 20 20 20 20 20 O0 °N;)a o o 2 Or 1�" J V a U o o o O o U o V O U O U O 0 0 N Q U U co U a7 Ce Q of d WN WN W N 0 W N O W N W N O W N O W N N 2 WO W O W O O 0 O C co M M M M M M M CO M M M CL Y > 0 0 0 0 0 0 0 0 0 0 o W a7 •y N N N N N N N N N N N N Cu y ..O (U) M M fU7 M M M ros Ce 0 CC 00 N- iZ r` r` n co m co a_ LU as 0m /o 000 Z `o 0-112 co co ao Q v w z 2 `N- P. 0 N- y w R N,`nl. iirs J sZ Ya I '0 ^ O 65 I I o as 1 CL M C zI I iw C 10 N N N 5 r O I zlr) 0 C d co 11 — N O N E D- I LLU ✓ 0 � E• ' CC 0o N ! C J I 0 O < a 0 re z 0 1 p I— N , Cu H Na) a1 0 /N z JL 0 2M 1 / w yco Tol N W m 1.... I O ul O O Jfn n LAJ O y , Z C A p p N QCe g a o cC Q Z E ZI 0 CI y 0 o 0 T c E _i Z m g Cu Cu Cu Cu Cu Cu Cu co as Cu m m y y O o Cu To To is m m to -o Cu Cu Cu 0 11�, I c E' oo 0 0 0 0 0 0 0 0 ai 0 0 0 / 0 zI ` m = _- m m 10 m m = m �a :' os o) 1-_-s os m rn rn rn rn rn rn os C 0 'I Z a _ ` 11 O 0 0 0 0 0 0 0 0 _ a a a c O J y y M M M M M M M M M 2 I ++ co L N N N N N N N N_ _N V V T N Q z L C - mo M M M M M M M M M M M M I f H O 0 «W o z N N N N N N N N NCV N N N r4 1 1 0 I I- o iv E E1 u- _ LL1 a « w mp / u/ wOyy$ ' LI. a> z W c 2 0 0 0 0 0 0 0 0 0 0 0 a N -+ y 0 O c m rn a o 0 0 0 0 0 00 0 cs a 0 1- 3 3 w w w w w w w LU .oma Ow 0 0 o I o P 0 0 m COo .0 r - L /Z/ Z /Z I co O 0 O 0 > U 0 1 o) z0 c c c 8 E a ›- ›- } 0 N .N N U) U) N N T J � !C.)1 9• 0 88 Z Z Z 2 O O j ' CON >., O. a CO U7 U) co 0 co U)0 ) a) to C Z Za Z z° 2 z •5 y o Q \] Z O O o O O o cn <n W o- o o F. cu_ u)J U)L.L. (_n-J o m (a } 0 d I Q >0 >-oo >0 >-oo c c < < m �° a o a o ii. ii m 0 0 og < . <g o 0 0 W 0 0 J J N J N ami N J N ate) N N N I U 5i N 7O Q)0 N a)'- a) N N D W ii ii ii g ii it it ii c Q Q 1/ 0-- w 0-o .0C .9v .011 .o v_ 0 a.0) C) Z EZ 1 o C a) C c a) C c C c (0 W E y co iii o-2 o2 ov 2 2 0 2 0 2n E } >- } m / J N a N>�> N a a) N N N N W U N / N 0 /� LI < a W w W~ W ce W i_ W W W N 2 CO ID • IL co I O O U el r) r) r) r) r) r) o.d a :° CL. 0 0 E. 0 0 E. E. E u) E o co O 1 W g N N N N N N N IX O co 00 a0 a0 co co co 1 N co CD a) a E 111 WCS CD Of N N -J a) CO m a U m o ; E co za) �; Q r O• O N m CO7 J0. i 0 E c !I CL O L c U U m C o N 1 G O O Es--; /Z 1 J < } } f} rKi o I_ ~ N p E Z 0 N o N To • C a• CO2 Q N c N E m c g ~ E I . .i M W .� co Y z �/ 0 o c ccy III �// 0 iii 0 c c 11 1 n C O a a O Al 0 Q O E O O L T Z N U 0 • U c 0 0 l in co co Z co co co co co co o �� d co co 00 0 0 0 0 0 0 0 a�oi c Q rn m m .� rn 9CTI CO I.1',) as F'>- l :`O O at N a d re O c y .> E Z a a YIX co• lco co 0 0 TOZ Hi < O o w ac)) co 10 U U U U U U p I '-zr; u .2 m 10 0 a c o E ,' a N 0 I,0 0 0 0 0 0 o p )I I O o 2 a 0 0 O. 2 1w W w W WWWJ ? 0 a 0 1, U 0 WELL LOG '2--44 -r TRANSMITTAL PROACTIVE DIAgNosTIC SERVICES, INC. DATA LOGGED .41/44 /2014 Ci vE M K BENDER �UN032014 To: AOGCC Makana Bender 40GCCy 333 W. 7th Ave 4� Suite 100 Anchorage,Alaska 99501 (907) 793-1225 RE : Cased Hole/Open Hole/Mechanical Logs and/or Tubing Inspection(Caliper/ MTT) The technical data listed below is being submitted herewith. Please acknowledge receipt by returning a signed copy of this transmittal letter to the attention of: BP Exploration (Alaska), Inc. Petrotechnical Data Center Attn: Judy Smith LR2 - 1 900 Benson Blvd. Anchorage,AK 99508 and ProActive Diagnostic Services, Inc. Attn: Robert A. Richey 130 West International Airport Road Suite C Anchorage, AK 99518 Fax: (907) 245-8952 1) Production Profile-Maps 01-Apr-14 Z-10A BL/ CD 50-029-21986-01 2) Gas Lift Survey 01-Apr-14 Z-10A BL/ CD 50-029-21986-01 ti i ) ; I Signed : 1 r Date Print Name: -;-- PROACTIVE DIAGNOSTIC SERVICES, INC., 130 W.INTERNATIONAL AIRPORT RD SUITE C, ANCHORAGE, AK 99518 PHONE: (907)245-8951 FAx: (907)245-8952 E-MAIL: PDSANCHORAGE@Q MEMORYLOG.COM WEBSITE:WWW.MEMORYLOG.COM D\Archives\MasterTemplateFtles\Templates\Distnbution\TransmrttalSheets\BPTransmit docx Wallace, Chris D (DOA) From: AK, D&C Well Integrity Coordinator[AKDCWelllntegrityCoordinator@bp.com] Sent: Wednesday, December 25, 2013 9:14 AM 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; Burton, Kaity; Wallace, Chris D (DOA); AK, OPS Well Pad Z Cc: AK, D&C DHD Well Integrity Engineer; AK, D&C Well Integrity Coordinator; Regg, James B (DOA) Subject: OPERABLE: Producer Z-10A(PTD#2121380) Passing OART and PPPOT-IC Attachments: Producer Z-10A(PTD#2121380) TIO Plot.docx All, Producer Z-10A (PTD#2121380) passed an inner casing wellhead seal pressure test on 12/17/2013 and passed a subsequent OART on 12/23/2013. The well is reclassified as Operable. A copy of the TIO plot is attached for reference. Please call with any questions. Thank you, Jack Disbrow Laurie BP Alaska-Well Integrity Coordinator ri Global Wells Organization Office: 907.659.5102 WIC Email:AKDCWellIntegrityCoordinator@bp.com From: AK, D&C Well Integrity Coordinator Sent Saturday, December 07, 2013 8:02 PM To: AK, •• GC2 OSM; AK, OPS GC2 Field O&M TL; A , •PS GC2 Wellpad Lead; AK, OPS Prod Controllers; Cismoski, Doug A; Dani- Ryan; AK, D&C Wireline Operations Team ;.d; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells .t Engr; AK, RES GPB East Wells Opt Engr; ;b.on, Kaity; 'chris.wallace@alaska.gov'; AK, OPS Well Pad Z Cc: AK, D&C DHD Well •tegrity Engineer; AK, D&C Well Integrity Coor.•4ator; 'jim.regg@alaska.gov'; AK, D&C Projects Well Integrity Engineer Subject: UNDER EVALUATIO '• Producer Z-10A (PTD #2121380) Sustained OutAnnulus Casing Pressure Above MOASP N All, �`.. Producer Z-10A(PTD#2121380)was reported have sustained outer annulus casing pressure ab a MOASP on 12/06/2013. The pressures were tubing/inner ann b s/outer annulus of 300/1730/1160 psi. The wel • reclassified as Under Evaluation and placed on a 28 day clock to facilit. - evaluation. Plan forward: 1. Wellhead: Evaluate inner casing wellhead seals \\, 2. DHD: Perform OART 1 Producer Z-10A(PTD#2121380)TIO Plot Wu:Z-10 4.000 3.000 �-Tb9 -i-IA 2.000 OA DOA -I-000A On 1.000 ..f►.N..�as. A.. ._... +----fl'Y•Imp.--. ./Nt 0928/13 10105/13 10/12/13 1019111 10'10/13 11102/13 11/03113 11/16/13 11/23113 11/30113 12/07113 12/14/13 1221113 Wallace, Chris D (DOA) From: AK, D&C Well Integrity Coordinator[AKDCWeIllntegrityCoordinator@bp.com] Sent: Saturday, December 07, 2013 8:02 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; Burton, Kaity; Wallace, Chris D (DOA); AK, OPS Well Pad Z Cc: AK, D&C DHD Well Integrity Engineer; AK, D&C Well Integrity Coordinator; Regg, James B (DOA); AK, D&C Projects Well Integrity Engineer Subject: UNDER EVALUATION: Producer Z-10A(PTD#2121380) Sustained Outer Annulus Casing Pressure Above MOASP Attachments: Producer Z-10A(PTD#2121380) TIO Plot.docx; Producer Z-10A (PTD#2121380) Wellbore Schematic.docx.pdf All, Producer Z-10A(PTD#2121380)was reported to have sustained outer annulus casing pressure above MOASP on 12/06/2013. The pressures were tubing/inner annulus/outer annulus of 300/1730/1160 psi. The well is reclassified as Under Evaluation and placed on a 28 day clock to facilitate evaluation. Plan forward: 1. Wellhead: Evaluate inner casing wellhead seals 2. DHD: Perform DART Copies of the TIO plot and wellbore schematic are included for reference. Please call with any questions. Thank you, Jack Disbrow {Alternate. Laurie BP Alaska-Well Integrity Coordinator GANGlobal Wells Organizatior Office: 907.659.5102 WIC Email:AKDCWellIntegrityCoordinator@bp.com 1 Producer Z-10A(PTD#2121380)TIO Plot Well:z-10 '.. 3 CCC t 169 —II—IA 2 Clc OA OOA 000A On 1.0001 .4111.11.1141110 v 09177!13 09+14J13 0901113 0502613 1005+13 10+17/13 10119+13 1026113 11/7/13 11/09+13 11/10113 11123113 11/34:13 12/07;13 TREE= 4-1/16"CNV WELLHEAD= FMC Z-10A S 1F2E." (NOTES: WEBLLNGLE70°@ 14286' *** ACTUATOR= AXELSONCHROE MIAL KB.ELE 91.78' [I BF.ELEV= 55.38' KOP= 900' 20"CONDUCTOR — ? 2179' --�4-1/2"HES X NP,D=3.813" Max Angle= 110°@ 13340 GAS LIFT MANDRELS Datum MD= 12829' ' ' ST M) ND DEV TYPE VLV LATCH PORT DATE Datum ND= 8800'SS D= " 7 3862 3093 55 Mute DOME FE 16 11/27/12 6 732486127629' 426 5096 55 H= SO RK 20 11/27/12 13-318"CSG,68#,L-80 BUTT,D=12.415" H 3176' 5 9455 6343 49 WM DMY RK 0 11/19/12 9-5/8"X 7"BKR ZXFN LTP w/10'TRK --I 9448' 4 10279 6910 47 KBG-2 DMY BK 0 11/19/12 w/FLEX LOCK HGR D=6.18" 3 11060 7470 40 KBG-2 DMY BK 0 11/19/12 2 11634 7935 35 KBG-2 DMY BK 0 11/19/12 9-5/8"VVHPSTOCK(10/18/12) —1 9610' ii 1 12167 8372 34 KBG-2 DMY BK 0 11/19/12 9-5/8"CSG,47#,L-80 BUTT,D=8.681' --I —9610 MLLOUT WINDOW(Z-10A) 9610'-9627" Minimum ID =2.992" @ 15674' 12201' H4-1/2"HES X MP,D=3.813" 4-1/2" X 3-1/2" XO -' 0 � 12229' --]7 X 4-1/2"HES TNT PKR,ID=3.856" 12262' H4-112"HES X NP,D=3.813" 12339' H4-112"HES X NP,D=3.813" 12342' )—7"X 5"BKR HRD-E ZXPN LTP TOP OF 4-1/2"LNR —I 12346' — w/10'TEBACK,D=4.430" 4-1/2"TBG,12.6#,13CR-85 VAM TOP, —1 12350' 12351' —14-1/2"VVLEG,D=4.00" IN .0152 bpf,ID=3.958' —ELMD TT NOT LOGGED 12362' H 7"X 5"FLEX-LOCK LNR MGR,D=4.430" 7'CSG,26#,L-80 HYD 563,.0383 bpf,D=6.276" —I 12522' • 12374' -15'X 4-1/2"XO,ID=3.91" I I HES DURASLEEVE"XD"SLD SLV,ID=3.813" HES"HYBRID"OIL SWEi.L PKR 1 SIZE NO# TOP DEPTH 0/C DATE t i NO SIZE TOP DEPTH MN D 4-1/2" 11 12771 0 11/30/12 -• 10 4-1/2" 12637 3.958" 4112" 10 12891 C 12/31/12 i i 9 4-1/2" 12808 3.9513- 4-1/7 9 13138 C 12/31/12 '=' *=' 8 4-1/2" 12972 3.958 4-1/7 8 13390 0 11/30/12 7 4-112" 13286 3.958" 4-1/2" 7 13567 0 11/30/12 '� 4-1/2' 6 13796 0 11/30/12 6 4-1/7 13436 3.958" 13693 3.958" 4-1/7 5 14069 0 11/30/12 On =' 5 4-1/7 4-1/7 4 14431 0 11/30/12 4 4112" 14567 3.958" 3 4-1/2" 14881 3.958" 4-1/7 3 14692 0 11/30/12 2 41/2" 15320 3.958" 4-1/2" 2 15121 0 11/30/12 4-1/7 1 15644 0 11/30/12 -' =' 1 4-1/7 15561 3.958' _I _. 15534' 14-1/2"BKR SFIFTTIG TOOL VERFICATION SUB,D=3.91" 15674' —I 4-1/2'X 3-1/2"XO,ID=2.992" PBTD 15712' _. _ .-..-.4 15676' --13-1/2"FES ANCHOR SWELL PKR,ID=2.992" 15676' —I 3-112"AFD"DB 10"CIBP(11/24/12) 4-1/2"LNR,12.6#,13CR 85 VAM TOP, — 15752' II 0152 bpf,D=3.958" �I� 15708' H3-1/2-X 4-1/2"X0,ID=2.992" ATE REV BY COMuU'1TS DATE REV BY COMvU'JTS PRUDHOE BAY UNIT 12/11/89 AUDI 2 INITIAL COMPLETION 12/01/12 JJU PJC OPEN ALL SLD SLVS(11/30/12) WELL: Z-10A 12/03/91 N2ES RWO 12/02/12 JJU PJC SET CIBP(11/24/12) PERMIT No:"`2121380 11/XX/12 D-25 SIDETRACK(Z-10A) 12/08/12 JU PJC TBG/LTP CORRECTION API No: 50-029-21986-01 11/20/12 PJC DRLG DRAFT CORRECTIONS 12/15/12 RR/PJC ANAL DRLG CORRECTON SEC 19,T11N,R12E,971'FM_&1183'FWL 11/28/12 RT/PJC GLV C/O(11/27/12) 01/16/13 JJUJM) CLOSED SLICING SLVS(12/31/12) 11/28/12 PJC S SLV/SVIIELL PKR CORRECTIONS BP Exploration(Alaska) McMains, Stephen E (DOA) ) - (3Y From: McMains, Stephen E (DOA) Sent: Monday, August 05, 2013 3:00 PM To: 'Ramos, Tania ((Udelhoven Oilfield System Services (UOSS))' Cc: 'howard.okland@alaska.org' Subject: Missing Well Logs Tania, I notice some more missing logs. PTD 212-138, PBU Z10A has a missing MWD SSTVD. PTD 212-001, PBU Z-50 is missing GR, RES GR, RES, DEN, NEU GR, RES, AZI DEN, NEU Log missing. These log were listed in block 21 of the completion report as being run and AOGCC has not received them as of today. Email Tania Ramos today. Steve McMains 793-1233 1 D A LOGGEDI2013 212.7‘3g � M K BENDER 2.S\A\ jS\A\ Schiumberger RECEIVED Drilling & Measurements AUG 0 5 2013 MWD/LWD Log Product Delivery OG ( Customer BP Exploration Alaska Inc Dispatched To: Makana Bender Well No Z-10A Date Dispatched: 2-Aug-13 Installation/Rig DOYON 25 Dispatched By: STEPHANIE PACILLO Data Survey No Of Prints No of CDs Z-10A Log 1 1 2 in MD 1 2 in TVD 1 5 in MD N/A 5 in TVD N/A e4Received By: P/47/1.1- Please sign and return one copyto: Drilling&Measurements 2525 Gambell Street,Suite 400 Anchorage,Alaska 99503 hecheto(cD.slb.com Hector Echeto Fax:907-561-8317 TRANSMITTAL#:6176 b RECEIVE.. Date 19-JULY-2013 JUL 3 0 2013 Transmittal Number: 93307 AOGCC - 1a - 3-7 BPXA WELL DATA TRANSMITTAL Enclosed are the materials listed below. (BPXA FIELD LOG DATA) a 3 If you have any questions, please contact Doug Dortch at the PDC at 564-4973 Delivery Contents 1 CD-ROM Containing Field Log Data & Electronic Log Prints for the following wells: Z-10A of Please Sign a • 'eturn one co; of this tra smittal. Thank You, Doug Dortch Petrotechnical Data Center Attn: State of Alaska - AOGCC Attn: Christine Shartzer 333 W. 7th Ave, Suite 100 Anchorage, Alaska 99501 Petrotechnical Data Center LR2-1 900 E. Benson Blvd. PO Box 196612 Anchorage,AK 99519-6612 McMains, Stephen E (DOA) From: Lastufka, Joseph N [Joseph.Lastufka@bp.com] Sent: Wednesday, January 02, 2013 3:08 PM To: McMains, Stephen E (DOA) Subject: RE: PBU Z-10A/ PTD#212-138 Entry error on Casing Pressure. Thanks! From: Lastufka, Joseph N Sent: Wednesday, January 02, 2013 3:06 PM To: McMains, Steve (AOGCC) (steve.mcmains@alaska.gov) Subject: PBU Z-10A/ PTD # 212-138 Hi Steve, Please reference the following well: Well Name: PBU Z-10A RPDM$ JAN 0 3 2013 4F/1i Permit#: 212-138 API #: 50-029-21986-01-00 Date of Test: 12/4/12 Type of Test: IPT (Initial Production Test) Choke Size: 176 Choke Unit: 64ths Production Method: Gas Lifted Duration (Hours Tested): 6 Top Reference (Top Perf MD): 12771' Bottom Reference (Bottom Perf MD): 14692' Tubing Flowing (Pressure): 294 Casing Pressure: 1240 Total Test (Rate f/0, W, G): 196/ 389/579 24-Hour Rate (0, W, G): 785/ 1556 /2315 Gravity (Oil, API): Not Available GOR (Gas-Oil Ratio): 2949 This well began Production on Method of Operations on this date: December 4, 2012 1 RECEIVED STATE OF ALASKA DEC 1 12012 ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOSOGCC la Well Status' . ®Oil 0 Gas 0 SPLUG 0 Other 0 Abandoned 0 Suspended lb. Well Class 20AAC 25105 20AAC 25110 0 Exploratory 0 Stratigraphic 0 GINJ 0 WINJ 0 WAG 0 WDSPL 0 Other No of Completions One • ®Development 0 Service 2. Operator Name. 5.Date Comp.,Susp.,or Aband.: 12 Permit to Drill Number. BP Exploration (Alaska) Inc. 11/21/2012 212-138 ' 3. Address: 6.Date Spudded: tat, ii 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 1 /2012 X' �t, 50-029-21986-01-00 • 4a. Location of Well(Governmental Section). 7.Date T.D.Reached. I.1`t3 14. Well Name and Number: Surface: 11/15/2012 • PBU Z-10A • 972' FNL, 1182'FWL, Sec. 19,T11 N, R12E, UM 8. KB(ft above MSL): 94.81' 15. Field/Pool(s) Top of Productive Horizon. 3456' FSL, 720' FEL, Sec. 14,T11 N, R11 E, UM GL(ft above MSL)- 53.98' Prudhoe Bay/Prudhoe Bay - Total Depth. 9.Plug Back Depth(MD+TVD) 4468' FSL,3358' FEL, Sec. 14.T11 N, R11 E, UM 15712' 8971' 4b Location of Well(State Base Plane Coordinates,NAD: 10.Total Depth(MD+TVD) 16 Property Designation: Surface. x- 598906 • y- 5959100 • Zone- ASP4 , 15778' 9009' • ADL 028262.&028245 TPI. x- 591667 y- 5963437 Zone- ASP4 11.SSSV Depth(MD+TVD) 17. Land Use Permit. Total Depth:x- 589016 y- 5964417 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 AAC 25 050) N/A ft MSL 1900'(Approx.) 21.Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25 071): 22.Re-Drill/Lateral Top Window MD/TVD. MWD/GR/RES/NEU/DEN, MWD/GR/RES/NEU/DEN ' 9610' • 6444' 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH ND HOLE AMOUNT CASING WT PER FT GRADE TOP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED 20" Insulated Conductor Surface 110' Surface 110' 260 sx Arctic Set(Approx.) 13-3/8" 68# L-80 Surface 3176' Surface 3176' 17-1/2"" 4395 cu ft Permafrost 9-5/8" 47# NT-80S Surface 9610' Surface 6444' 12-1/4" 1219 sx Class'G', 500 sx Class'G' 7" 26# L-80 9448' 12522' 6338' 8671' 8-1/2" 288 sx LiteCrete, 178 sx Class'G' ✓ 4-1/2" 12.6# 13Cr85 12342' 15752' 8518' 5994' 6-1/8" Uncemented Slotted Liner, Swell Packers ✓ 24. Open to production or injection? ®Yes 0 No 25. TUBING RECORD If Yes,list each interval open SIZE DEPTH SET(MD) PACKER SET(MD/ND) (MD+TVD of Top&Bottom,Perforation Size and Number): 4-1/2"Slotted Liner 4-1/2", 12.6#, 13Cr85 12351' 12229'/8424' 26 ACID,FRACTURE,CEMENT SQUEEZE,ETC. 12771' 8861' 15121' 8860' WAS HYDRAULIC FRACTURING USED DURING COMPLETION?❑Yes ®No 12891' 8926' 15644' 8936' 13138' 8992' :.-_,,, :L-„ DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED 13390' 8939' Y ~ 2200' Freeze Protect w/156 Bbls of Diesel 13567' 8889' 13796' 8839' 14069' 8813' ' ,, 14431' 8814' I - 'r�►4 ar,, 14692' 8860' 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? ❑Yes ®No . Sidewall Core(s)Acquired? 0 Yes 0 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 AAC 250.071 None R[3DMS DEC 13 2012 jtf-ity7 G Form 10-407 Revised 10/2012 CONTINUED ON REVERSE /.y/3Submit Original Onl ` /i� ..1 29. GEOLOGIC MARKERS(List all formations ar rkers encounter 30 FORMATION TESTS NAME TVD Well Tested? 1]Yes ®No Permafrost Top If yes,list intervals and formations tested,briefly summarizing test Permafrost Base results. Attach separate sheets to this form,if needed,and submit detailed test information per 20 AAC 25.071. HRZ 9617' 6449' None Kalubik 9929' 6665' Kuparuk C 10067' 6762' LCU/Kuparuk A 10190' 6849' Miluveach 10272' 6905' Kingak 11230' 7605' Sag River 12513' 8663' Shublik 12552' 8696' Eileen 12686' 8801' Ivishak/Zone 4 12734' 8836' Formation at Total Depth: Ivishak/Zone 4 12734' 8836' 31.List of Attachment 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: Email: Joseph.Lastufka@bp.com Tr= • Hyatt,564- 7;Trevor.Hyatt@bp.com / Title Drilling Technologist Printed Name. .- ' A Signature. Phone 564-4091 Date: I7-17 • 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 la: 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= 4-1/16"CM DRAFT W�LHFAD= FMC PJC SM NOTES: WELL ANGLE 70°@ 14286' "** ACTUATOR= AXELSON PJ Z 1 QA 4-1/2"CHROME TBG& LNR*" INITIAL KB.ELE 91.78' � I BE ELEV 55.38' KOP= 900' ' 2179' -14-1/2"HES X NP,D=3.813" 20"CONDUCTOR, - Max Angle= 110°@ 13340' GAS LIFT MANDRELS Datum MJ 12829' #' ST ND ND DEV TYPE VLV LATCH PORT DATE Datum TVD- 8800'SS D= " 7 3862 3093 55 MNG DOME RK 16 11/27/12 6 7426 5096 55 MMG SO RK 20 11/27/12 13-318"CSG,681#,L-80 BUTT,D=12.415" -{ 3176' 5 9455 6343 49 MNG DMY RK 0 11/19/12 9-5/8"X 7"BKR ZXPN LTP w/10'TIEBK - 944W 4 10279 6910 47 KBG-2 DM' BK 0 11/19/12 w 1 FLEX LOCK HGR,ID=6.18" 3 11060 7470 40 KBG-2 DMY BK 0 11/19/12 2 11634 7935 35 KBG-2 DMY BK 0 11/19/12 9-5/8"WHPSTOCK(10/18/12) H 9610' 1 12167 8372 34 KBG-2 DMY BK 0 11/19/12 9-5/8"CSG,47#,L-80 BUTT,ID=8.681" -{ -9610 MILLOUT WINDOW(Z-LOA) 9610'-9627' Minimum ID =2"992" @ 15674' ' 12201' H4-1/2"HES X NIP,D=3.813" 4-1/2" X 3-1/2" XO Sli '-' 12229' -{7 X 4-1/2"HES TNT PKR,ID=3.856" 12262' H4-112"HES X NMP,D=3.813" . 12339' H4-112"HES X NIP,ID=3.813" I 12342' -7"X 5"BKR HRD-E ZXPN LTP TOP OF 4-1/2"LNR --i 12346' I WI 10'TIEBACK,D=4.430" 4-112"TBG,12.6#, 13CR-85 VA TOP, H 12.350' - 1_,17, 12351' H4-1/2"WLEG,ID=4.00" .0152 bpf,ID=3.958" --ELMD TT NOT LOGGED 12362' -I 7"X 5"FLEX-LOCK LNR HGR,ID=4.430" 7"CSG,26#,L-80 HY D 563,.0383 bpf,0=6.276' -I 12522' • ' 12374' H5"X 4-1/2'XO,D=3.91" I I I-IES IMVASLEEVE"XD"SLD SLV,ID-3.813" '=' 1.11.1 HE "HYBRID'OIL SWELL PKR SIZE NO# TOP DEPTH 0/C DATE i I 4-1/2" 11 12771 0 11/30/12 NO SIZE TOP DEPTH MN D 4-1/2" 10 12891 0 11/30/12 10 4-1l2 12637 3.958" 4-1/2" 9 13138 0 11/30/12 .. liall 9 4-1/2" 12808 3.958" 4-112" 8 13390 0 11/30/12 8 4-117' 12972 3.958" 4-1/2" 7 13567 0 11/30/12 7 4-1/2" 13286 3.958" 4-1/2" 6 13796 0 11/30/12 6 4-112" 13436 3.958" 4-1/2" 5 14069 0 11/30/12 5 4-1/2" 13693 3.958" 4-1/2" 4 14431 0 11/30/12 4 4-1/2"' 14567 3.958" 4-1/2" 3 14692 0 11/30/12 3 4-1/7' 14881 3.958" 4-1/2" 2 15121 0 11/30/12 2 4-1/7 15320 3.958" 4-1/7 1 15644 0 11/30/12li:,41 4-1/2" 15561 3.958" ._. 15534' -4-1/2"BKR SHIFTING TOOL VERIFICATION SUB,D=3.91" / 15674' H4-1/2"X 3-1/2"XO,ID=2.992" PBTD H 15712' _. = .,. 15676' H3-1/2"HES ANCHOR SWELL FKR,ID=2.992" 4 15676' -3-1/2"WFD"DB 10"CIBP(11124112) -1/2"LNR,12.6#,13CR-85 VAM TOP, H 15752' 0152 bpf,D=3.958" 15708' �-�3-1/2"X 4-1/2"X0,113""2.992" DATE REV BY CbMvITlTS - DATE ' REV BY COMMENTS PRUDHOE BAY MIT 12/11/89 AUDI 2 INITIAL COMPLETION 11/28/12 PJC S SLV/SWELL FKR CORRECT1O WELL: Z-10A 12/03/91 N2ES RWO 12/01/12 JJL/PJC OPEN ALL SLD SLVS(11/30/12) PERMIT No:'2121380 1100012 D-25 SIDETRACK(Z-10A) 12/02/12 JJL/PJC SET CDP(11/24/12) AR No: 50-029-21986-01 11/02/12 PJC DURING RIG OPERA[TONS 12108/12 JL/PJC TBG/LIP CORRECTION SEC 19,T11N,R12E,971'FNL&1183'FWL 11/20/12 PJC DRLG DRAFT CORRECTIONS 11/28/12 RT/PJC'GLV C/O(11/27/12) BP Exploration(Alaska) t BP AMERICA LOT / FIT Summary Well Name: Z-10A Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) (ppg) 10/20/12 LOT 12,550.00 8,693.00 8.80 1,200.00 5,174.00 11.46 11/06/12 FIT 12,522.00 8,670.00 8.80 1,200.00 5,163.40 11.46 Page 1 of 1 North America -ALASKA- BP Pa.e 1 of 33 Operation Summary Report Common Well Name.Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10/10/2012 14:00 - 00:00 10.00 CONS P PRE PRE-RIG WORK -SET BPV&TEST PULL WELL HOUSE -SET DOYON 25 TEMP WELL HOUSE INSTALL 7'JIB CRANE EXTENSION WHILE PRE RIG WORK IS COMPLETED 10/11/2012 00:00 - 02:30 2.50 CONS P PRE CONTINUE PRE-RIG WORK PAINT JIB CRANE WELDS =CHANGE OUT LOWER RAM DOOR HYDRAULIC FITTINGS ON BOP -SCOPE DERRICK -RAISE C-SECTION. PULL TEST JIB CRANE -MPI WELDS ON JIB CRANE LOWER DERRICK ONTO HEADACHE RACK WALK PIPE SHED COMPLEX OUT FROM SUB BASE AND POSITION FOR TRUCKS 02:30 - 06:30 4.00 CONS P PRE FINISH JIB CRANE EXTENSION WELDING -WAIT ON HEAVY EQUIPMENT TO FINISH .Z-10 PAD WORK 06:30 - 22:00 15.50 MOB _P PRE MOVE MODULES FROM Z-69 TO Z-10 22:00 - 00:00 2.00 MOB N WAIT PRE CONTINUE TO WAIT ON PAD PREP. 10/12/2012 00:00 - 08:00 8.00 MOB N WAIT 0.03 PRE -WAITING ON PAD PREP TO BE COMPLETED. -POSITION RIG MATS 08:00 - 00:00 16.00 MOB P 0.03 PRE LAY RIG MATS.SPOT COMPLEXES NEAR Z-10 -REMOVE C-SECTION RAM FROM DERRICK -SET MATS AROUND WELL PULL SUB OVER AND SPOT OVER Z-10, SHIM AND LEVEL --STAGE PIT MODULE WITH TRUCK. 10/13/2012 00:00 - 20:00 20.00 MOB P PRE FINISH RIG MOVE -PREP&RAISE DERRICK. -STAGE CASING MODULE WITH TRUCK. PUMP, POWER&CASING MODULES. -SPOT PUMP, POWER&CASING MODULES. -SCOPE DERRICK INTO PLACE&SET ON SADDLES RIG ACCEPT AT 20:00 HRS ON 10/13/12 20:00 - 22:30 2.50 RIGU P PRE RIG UP ANNULUS VALVES, HIGH PRESSURE CIRC LINES FOR DISPLACING FREEZE PROTECT,SPOT 500 BBL OPEN TOP TIGER TANK, PORTABLE CHOKE&HARD LINE. MOBILIZE PONY WALLS TO TOP OF CELLAR HOUSE. 22:30 - 00:00 1.50 RIGU P PRE HOLD Z-1OA PRE-SPUD MEETING WITH BOTH CREWS 10/14/2012 00:00 - 01:00 1.00 RIGU P PRE R/U TO CIRC OUT FREEZE PROTECT 01:00 - 01:30 0.50 RIGU P PRE HOLD RIG EVACUATION DRILL -ALL PERSONS ACCOUNTED FOR -HELD AAR 01:30 - 03:00 1.50 WHSUR P DECOMP P/U LUBRICATOR AND TEST -250 PSI LOW FOR 5 MIN/3500 PSI HIGH FOR 5 MIN -GOOD TEST PULL BPV, R/D LUBRICATOR Printed 12/7/2012 11:21:38AM North America -ALASKA- BP • Page 2 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 I End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 10:00 7.00 WHSUR P DECOMP PRESSURE TEST LINES -250 PSI LOW/3500 PSI HIGH -GOOD TEST REVERSE CIRCULATE OUT 57 BBLS FREEZE PROTECT FROM TUBING WITH SEAWATER AT 3 BPM,170 PSI. SWAP TO TUBING& CIRCULATE 622 BBLS AT 3 BPM,180. 'TOTAL BBLS PUMPED=679 TOTAL BBLS RETURNED=679 10:00 - 10:30 0.50 P DECOMP B/D LINES, R/U TO TEST OA. 10:30 - 12:00 1.50 WHSUR P DECOMP PRESSURE TEST OA -250 PSI LOW FOR 5 MIN/2000 PSI HIGH FOR 30 MIN '-GOOD TEST 12:00 - 13:30 1.50 WHSUR P DECOMP P/U LUBRICATOR&TEST -250 PSI LOW FOR 5 MIN/3500 PSI HIGH FOR 5 MIN ON CHART -GOOD TEST 13:30 - 15:30 2.00 WHSUR P DECOMP INSTALL TWC&PRESSURE TEST FROM ABOVE -250 PSI LOW FOR 5 MIN/3500 PSI HIGH FOR 5 MIN PRESSURE TEST IA AND TWC FROM BELOW -250 PSI LOW FOR 5 MIN/3500 PSI HIGH FOR 30 MIN -WTL APPROVED TO PROCEED 15:30 - 16:30 1.00 WHSUR P DECOMP B/D&R/D LUBRICATOR,ALL HIGH PRESSURE CIRC LINES,VALVES&FITTINGS. 16:30 - 17:00 0.50 WHSUR P DECOMP R/D TREE PLATFORM,SEND OUT 11"X 13-5/8" ADAPTER,P/U 3'&1'RISER SPOOLS,AND HOLD PJSM ON N/D TREE. 17:00 - 20:00 3.00 WHSUR P DECOMP PREP TO NIPPLE DOWN TREE -BLEED RESIDULE PRESSURE&FLUID -R/D WING VALVE&ACTUATOR CONTROL HOOK ONTO TREE WITH TRAVELING BLOCKS &ATTEMPT TO PULL FROM WELL HEAD PULLING 15K OVER,NO MOVEMENT. 20:00 - 21:00 1.00 WHSUR P DECOMP WRAP CONNECTION WITH HERCULIGHT& APPLY STEAM,P/U 14'RISER FROM BOPE DECK TO RIG FLOOR&INSTALL 3'&2'RISER SPOOLS. 21:00 - 22:00 1.00 WHSUR P DECOMP ATTEMPT TO PULL TREE AND ADAPTOR FROM WELL HEAD WITH BLOCKS PULLING 19K OVER -NO MOVEMENT APPLY FORCE FROM UNDER ADAPTOR WITH FLANGE SPREADERS AND BOTTLE JACKS -NO MOVEMENT 22:00 - 00:00 2.00 WHSUR P DECOMP APPLY PORTA-POWERS FROM UNDER ADAPTOR AND LIFT FREE FROM WELL HEAD. REMOVE VALVES FROM ADAPTOR FOR CLEARANCE AND PULL TREE AND ADAPTOR TO_RIG FLOOR. 10/15/2012 00:00 - 01:00 1.00 WHSUR P DECOMP PULL TREE&TUBING SPOOL ADAPTER TO RIG FLOOR AND L/D Printed 12/7/2012 11:21:38AM North America-ALASKA- BP Page 3 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 ,X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:00 - 08:00 7.00 BOPSUR P DECOMP N/U BOPE -P/U 14'RISER,WITH 2'AND 3'SPACER SPOOLS -N/U FLOW LINE,FLOW BOX,CHOKE&KILL LINES -CHANGE OUT SAVER SUB ON TOP DRIVE_ _ 08:00 - 08:30 0.50 BOPSUR P DECOMP R/U BOP TEST EQUIPMENT 08:30 - 14:00 5.50 BOPSUR P DECOMP-TEST BOPE.TESTED ANNULAR AND RAMS 'TO 250 PSI LOW/3500 PSI HIGH FOR 5 MIN / EACH.TEST 4"&5"DP.ALL TESTS CHARTED. •i SEE BOP TEST ATTACHMENT. AOGCC BOB NOBLE WAVED WITNESS TO BOPE TEST. 14:00 - 14:30 0.50 BOPSUR P DECOMP R/D BOPE TEST EQUIPMENT 14:30 - 15:30 1.00 BOPSUR P DECOMP P/U DUTCH RISER SYSTEM AND RILDS, BRING DSM LUBRICATOR TOOLS UP BEAVER SLIDE. 15:30 - 17:00 1.50 BOPSUR P DECOMP M/U LUBRICATOR&TEST TO 250 PSI LOW/ 3500 PSI HIGH FOR 5 MIN EACH. PULL TWC,R/D LUBRICATOR&DUTCH RISER SYSTEM. 17:00 - 18:00 1.00 PULL P DECOMP M/U LANDING JOINT&R/U TO PULL HANGER, STEAM TUBING SPOOL FOR 1 HR. 18:00 - 20:00 2.00 PULL P DECOMP PULL TUBING HANGER -M/U LANDING JOINT TO TOP DRIVE -UNSEAT HANGER WITH 10K OVERPULL (145K P/U) -MONITOR WELL FOR 10 MIN-STATIC -DRAIN STACK AND PULL HANGER TO RIG FLOOR. -P/U WT=135K 20:00 - 22:00 2.00 PULL P DECOMP CIRCULATE 8.5 PPG SEAWATER SURFACE TO SURFACE -8 BPM,270 PSI 22:00 - 00:00 2.00 PULL P DECOMP .UD 4-1/2"12.6#13CR-80 TDS TUBING FROM 9796'MD TO 8900'MD, REMOVING DUAL ENCAPSULATED CONTROL LINE&CONTROL LINE PROTECTORS. - 10/16/2012 i 00:00 - 02:00 2.00 PULL P DECOMP UD 4-1/2"12.6#13CR-80 TDS TUBING FROM 8900'MD, REMOVING DUAL ENCAPSULATED CONTROL LINE&CONTROL LINE PROTECTORS. RECOVER TOTAL OF 26 CONTROL LINE PROTECTORS AND 4 STAINLESS STEEL BANDS. 02:00 - 04:00 2.00 PULL N RREP DECOMP REPLACE SCREWS IN ELEVATORS, R/U SCAFFOLDING FOR JIB CRANE WIND WALL ON RIG FLOOR, CHANGE OUT LINKS IN ENERGY TRACK 04:00 - 11:30 7.50 PULL P DECOMP CONTINE TO UD 4-1/2"12.6#13CR-80 TDS TUBING. -MONITOR DISPLACEMENT VIA TRIIP TANK -LAY DOWN TUBING EQUIPMENT&PICK UP TOOLS FOR CLEAN OUT RUN • Printed 12/7/2012 11:21:38AM North America ALASKA BP • Page 4 of 331 Operation Summary Report Common Well Name.Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time. 11/7/1989 12:00.00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum.Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 15:00 3.50 PERF P WEXIT PU&MU CLEAN OUT BHA: TOTAL 875' -8-1/2"MT BIT -(2)BOOT BASKETS -BIT SUB WITH FLOAT -8-1/2"WATERMELON MILL -6-1/2"BUMPER SUB -(9)6-1/4"DRILL COLLARS -(18)JNTS OF 5"HWDP 5"DP 15:00 - 00:00 9.00 CLEAN P WEXIT SINGLE IN WITH CLEAN OUT BHA ON 5"DP FROM THE PIPE SHED -MONITOR THE TRIP VIA THE TRIP TANK -FILLING PIPE EVERY 60 JNTS -MONITORING THE OA EVERY THREE HOURS 10/17/2012 00:00 - 00:30 0.50 CLEAN P WEXIT SINGLE IN WITH CLEAN OUT BHA ON 5" -TAG TOP OF 4-1/2"TUBING AT 9.816' -PULL TO 9660'MD TO WASH EZSV SETTING POINT 00:30 - 04:00 3.50 CLEAN P WEXIT CIRCULATE AND WASH EZSV SET DEPTH FROM 9.660'TO 9.590' -CIRCULATE AT 850 GPM 2800 PSI WITH 80 RPM.10-11K TORQUE PUMP 34 BBL HIGH VIS SWEEP,SWEEP BROUGHT BACK MINIMAL SCALE DEPOSITS TOTAL 2X BOTTOM UP. FLOW CHECK-WELL STATIC -GET SPR'S©9600'MD,8.5 MW @ 0315 MP-1 .20/30 SPM=40/75 PSI MP-2. 20/30 SPM=40/75 PSI SCAFFOLD CREW REMOVED SCAFFOLD FROM RIG FLOOR 04:00 - 09:00 5.00 CLEAN P WEXIT POOH ON ELEVATORS FROM 9,590'MD TO 316'MD WITH CLEAN OUT BHA 09:00 - 09:30 0.50 CLEAN P WEXIT LD CLEANOUT BHA.MONITOR DISPLACEMENT VIA TRIP TANK. -MONITOR WELL AT BHA,PJSM 09:30 - 10:00 0.50 CLEAN P WEXIT CLEAN AND CLEAR RIG FLOOR.CLEAN BOOT BASKETS(NO DEBRIS IN BOOKT BASKETS) 10:00 - 12:00 2.00 STWHIP P WEXIT RU SLB E-LINE UNIT -PJSM WITH 3RD PARTY PERSONNEL /76" 12:00 - 15:00 3.00 STWHIP P WEXIT RIH W/E-LINE,EZSV, TOP OF EZSV SET AT 9631'ELM 15:00 - 16:00 1.00 STWHIP P WEXIT PRESSURE TEST EZSV -250 PSI LO/3,500 PSI HI -5/30 CHARTED MINS EACH -TEST RESULTS SENT TO ROTARY TL, FOR APPROVAL -MIKE SCHULTZ APPROVED TO PROCEED 16:00 - 17:00 1.00 STWHIP P WEXIT RD SLB E-LINE UNIT -PJSM WITH BOT 17:00 - 20:30 3.50 STWHIP P WEXIT M/U WHIPSTOCK/MILLING BHA WITH MILLS, MWD,UBHO,HWDP,AND DRILL COLLARS. -VERIFY WHIP STOCK CHECK LIST WITH BAKER REP -SHALLOW HOLE TEST MWD @ 951'MD WITH 400 GPM/390 PSI,GOOD DETECTION 20:30 - 00:00 3.50 STWHIP P WEXIT RIH WITH 5"DP FROM 951'MD TO 4078'MD -FILL PIPE EVERY 20 STANDS -MONITOR DISPLACEMENT VIA TRIP TANK Printed 12/7/2012 11:21:38AM Ir North America -ALASKA- BP Page 5 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type. RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date. 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 10/18/2012 00:00 - 03:30 3.50 STWHIP P WEXIT RIH WITH WHIPSTOCK BHA ON 5"DP STANDS FROM 4078'MD TO 9592'MD -FILL PIPE EVERY 20 STANDS -MONITOR TRIP VIA TRIP TANK -MONITORING OA EVERY HOUR-0 PSI 03:30 - 05:00 1.50 STWHIP N DFAL WEXIT M/U TOP DRIVE FOR SETTING WHIPSTOCK -CIRC AT 400-500GPM/860 PSI, P/U=260K, S/O= 165K NO SIGNAL FROM THE MWD TOOL TROUBLE SHOOTING-MWD TOOL INITIATE ANTI JAMMING PROCEDURE- UNSUCCESSFUL -PUMP 660 GPM-TOOL STARTS AFTER 30 MIN 05:00 - 06:00 1.00 STWHIP P WEXIT -ORIENT WHIPSTOCK FACE TO 60 DEG LOHS -TAG EZSV AT 9,631'MD. -SET WHIP STOCK AT 9631'MD -SET BOTTOM TRIP ANCHOR WITH 20K DOWN -P/U 10K OVER TO CONFIRM SET -S/O 45K TO SHEAR OFF WHIPSTOCK TOP OF WHIPSTOCK SET AT 9610'MD 06:00 - 08:00 2.00 STWHIP P WEXIT DISPLACE WELL TO 10.3 LSND MUD - 420 GPM,780 PSI -SPR'S:MP#1 20/30 SPM 300/350 PSI MP#2 20/30 SPM 300/350 PSI 08:00 - 08:30 0.50 STWHIP P WEXIT POOH TO 9,363'MD. 08:30 - 09:30 1.00 STWHIP N DFAL WEXIT MU RTTS PER HALLIBURTON REP. -RIH UNABLE TO RIH PAST WEAR BUSHING -POOH INSPECT ELEMENTS, PACKER ELEMENT DAMAGED -LD RTTS 09:30 - 12:00 2.50 STWHIP P WEXIT SLIP AND CUT DRILLING LINE 12:00 - 16:00 4.00 STWHIP N RREP WEXIT CONTINUE TO CUT AND SLIP DRILLING LINE -KINK FOUND BELOW DEADMAN -SLIP&CUT 1890'OF DRILL LINE 16:00 - 17:00 1.00 STWHIP P WEXIT PJSM.P/U RTTS PACKER.RIH W/1 STAND TO 90'MD&SET -P/U WT.=254K,S/O WT.=160K 17:00 - 18:00 1.00 STWHIP P WEXIT DRAIN STACK. PULL WEAR RING,BLOW DOWN CHOKE AND KILL LINES. -CONFIRM 0 PSI ON OA PRIOR TO PULLING PACK OFF&MONITORED DURING OPERATION -M/U 5"TEST JOINT TO PACKOFF RETRIEVAL TOOL -PULL 9-5/8"PACKOFF,33K OVERPULL TO PULL PACKOFF 18:00 - 00:00 6.00 STWHIP P WEXIT INSTALL NEW 9-5/8"PACKOFF AS DIRECTED BY FMC REP -CHANGE OUT 3 LDS -TEST 9-5/8"PACKOFF TO 250 PSI LOW FOR 5 MIN/3500 PSI HIGH FOR 30 MIN (GOOD TEST) 10/19/2012 00:00 - 01:00 1.00 STWHIP P WEXIT PJSM FOR PULLING RTTS -PULL 9-5/8"RTTS AS DIRECTED BY HES REP INSTALL WEAR BUSHING 01:00 - 01:30 0.50 STWHIP P WEXIT RIG SERVICE -SERVICE TOP DRIVE Printed 12/7/2012 11:21:38AM North America -ALASKA- BP 101 Page 6 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual©94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:30 - 02:30 1.00 STWHIP N RREP WEXIT TROUBLE SHOOTING TOP DRIVE BLOWER -RIG MECHANIC AND ELECTRICIAN WORKING ON BLOWER ISSUE 02:30 - 06:00 3.50 STWHIP P WEXIT PJSM FOR MILLING OPERATIONS -SPACE OUT WITH ADDITIONAL SINGLE TO HAVE FULL STAND FOR MILL OUT. -BREAK CIRCULATION AND CIRCULATE SURF TO SURF. -PUW-241 K,SWOW-148 K,OFF BTM TQ= 18-20K ADD LUBES TO MUD SYSTEM TO LOWER OFF BOTTOM TORQUE VALUE -TORQUE-14-16 AFTER LUBES. -RAISED MUD LUBE FROM 1%TO 3% -OBTAIN SPR'S -SPR'S:MP#1 20/30 SPM 320/370 PSI MW-10.3 PPG, MP#2 20/30 SPM 320/370 PSI TIME-03:00 ADD LUBES TO MUD SYSTEM TO LOWER OFF BOTTOM TORQUE VALUE :- 06:00 06:00 - 13:30 7.50 STWHIP P WEXIT MILL WINDOW AS PER BOT REP FROM 9610' MD TO 9647'MD -90 RPM,500 GPM,15-19K TQ,1530 PSI DRILL 20'OF NEW HOLE TO 9,647'MD,6,469' TVD -453 GPM,1100 PSI,100 RPM,2-5K TQ,10K WOB -PUMP 33 BBL HIGH-VIS SUPER SWEEP, WHILE REAMING THROUGH WINDOW -CIRCULATE 2 X BOTTOMS UP AT 600 GPM, 1900 PSI TOW 9610'MD BOW 9627'MD -RECOVERED 290 LBS OF METAL • PRE SPUD WITH FRITZ CREW 13:30 - 14:30 1.00 STWHIP P WEXIT PULL UP INTO CASING TO-9600'MD AND PERFORM LOT -OBTAIN 14.8 PPG EMW LEAK OFF PRESSURE AT 9610'MD 6446'TVD WITH 1450 PSI AT SURFACE -APPROVAL TO PRCEED FROM THE ODE -EMAIL ROTARY TL THE EXCEL CRITERIA DATA SHEET TEST CHART 14:30 - 15:00 0.50 STWHIP P WEXIT OBTAIN SLOW PUMP RATES -PUMP DRY JOB, BLOW DOWN TOP DRIVE AND KILL LINE -MONITOR WELL PRIOR TO PULLING OFF BOTTOM-WELL STATIC -MW IN 10.3 PPG,MW OUT 10.3 PPG -SPR'S:MP#1 20/30 SPM 350/400 PSI MW-10.3 PPG, MP#2 20/30 SPM 320/380 PSI TIME-14:30 Printed 12/7/2012 11:21:38AM North America -ALASKA- BP Page 7 0 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 20:30 5.50 STWHIP P WEXIT POOH WITH MILLING BHA ON ELEVATORS F/ 9552'TO 371' -RACKING BACK 5"DP IN THE DERRICK -MONITORING DISPLACEMENT VIA THE TRIP TANK.HOLE TAKING CORRECT FILL 20:30 - 22:30 2.00 STWHIP P WEXIT LAY DQWN 8-1/2"MILLING BHA STAND BACK HWDP, L/D DRILL COLLARS AND MILLING ASSEMBLY -PILOT MILL 1/8"UNDER GAUGE -MIDDLE AND UPPER STRING MILL IN GAUGE PJSM FOR PULLING BHA -MONITOR WELL PRIOR TO PULLING BHA- WELL STATIC -MW IN 10.3 PPG, MW OUT 10.3 PPG C/O SLIP INSERTS 22:30 - 00:00 1.50 STWHIP P WEXIT CLEAN AND CLEAR RIG FLOOR.- RIG UP TO RINSE THE BOP STACK, RINSE THE STACK -PULL WEAR BUSHING PRE SPUD WITH MARMON CREW 10/20/2012 00:00 - 01:30 1.50 STWHIP P WEXIT JET BOP STACK. PERFORM WEEKLY FUNCTION TEST OF BOPE. -INSTALL WEAR BUSHING 01:30 - 13:30 12.00 STWHIP P WEXIT P/U&MIU 8-1/2"INTERMEDIATE DRILLING. BHA -SHALLOW TEST MWD,510 GPM,1130 PSI (GOOD TEST) -CHANGE OUT SLIP INSERTS,MONITOR WELL VIA TRIP TANK -RIH WITH 5"DP STANDS FROM THE DERRICK TO 9,518'MD, MONITOR DISPLACEMENT ON TRIP TANK 13:30 - 14:00 0.50 STWHIP P WEXIT ORIENT TOOLFACE 60L ESTABLISH BASELINE ECD=11.34 PPG OBTAIN SPR @ 9,602'MD,6,480'TVD,AT 13:00 #1 MP-20/30 SPM=460/560 PSI #2 MP-20/30 SPM=420/510 PSI MW 10.3 IN/10.3 OUT 14:00 - 00:00 10.00 DRILL P INTI SLIDE THROUGH WINDOW DRILL 8-1/2"INTERMEDIATE FROM 9,647'MD TO 10,178'MD -550 GPM,2700 PSI ON/2465 PSI OFF, -MW 10.3 IN/10.3 OUT, ECD= 11.47 PPG -40-80 RPM,11-13 K OFF BOT TQ,14-15K ON BOT TQ -4-17 WOB, -P/U=235K, S/O= 162K, ROT=183K NO REPORTED LOSSES SPR'S @ 10,080'MD 6,778'TVD,TIME:021:00 #1 MP-20/30 SPM=450/520 PSI #2 MP-20/30 SPM=420/500 PSI MW 10.3 IN/10.3 OUT Printed 12/7/2012 11:21:38AM • North America -ALASKA- BP • Page 8 of 331 Operation Summary Report Common Well Name:Z-10 1 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. _ UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10/21/2012 00:00 - 12:00 12.00 DRILL P INTI DRILL 8-1/2"INTERMEDIATE FROM 10,178'MD TO 10,935'MD 7,390'TVD -550 GPM,2980 PSI ON/2765 PSI OFF, -MW 10.3+IN/10.3+OUT, ECD=12.00 PPG -80 RPM,12 K OFF BOT TQ,15K ON BOT TQ -18WOB, -P/U=241K,S/O=175K, ROT=211K NO REPORTED LOSSES SPR'S @ 10,557'MD 7,110'TVD,TIME:007:20 #1 MP-20/30 SPM=440/510 PSI #2 MP-20/30 SPM=420/490 PSI MW 10.3+IN/10.3+OUT 12:00 - 00:00 12.00 DRILL P INTI DRILL 8-1/2"INTERMEDIATE FROM 10,935'MD TO 11,760'MD 8027'TVD -550 GPM,3474 PSI ON/3172 PSI OFF, -MW 10.6 IN/10.6 OUT, ECD=11.72 PPG -80-100 RPM,15 K OFF BOT TQ,17K ON BOT TQ -.15-20 WOB, -AST=11.34,ART=9.21,ADT=20.55 -P/U=278K,S/O=186K, ROT=220K NO REPORTED LOSSES SPR'S @ 11,030'MD 7,444'TVD,TIME:13:00 #1 MP-20/30 SPM=420/540 PSI #2 MP-20/30 SPM=400/490 PSI MW 10.6 IN/10.6 OUT SPR'S @ 11,504'MD 7,827'TVD,TIME:19:30 #1 MP-20/30 SPM=420/520 PSI #2 MP-20/30 SPM=400/520 PSI MW 10.6 IN/10.6 OUT 10/22/2012 00:00 - 12:30 12.50 DRILL P INTI DRILL 8-1/2"INTERMEDIATE HOLE FROM 11,760'MD'TO 12,530'MD.8,678'TVD ✓ -580 GPM,3472 PSI ON/3150 PSI OFF -MW 10.6 IN/10.6 OUT, ECD11.62 -100 RPM,26K TQ -WOB 12-15K -AST-3.94,ART-3.90,TOTAL BIT HRS-27.65, TOTAL JAR HRS-101.3 TOP OF SAG RIVER CALLED BY GEO @ 12,519'MD,8,669'TVD(8,574'TVDSS) INTERMEDIATE TD CALLED AT 12,530'MD, 8678'TVD 12:30 - 15:00 2.50 DRILL P INTI ROTATE AND RECIPROCATE F/12,530'TO 12,490'MD -CBU X 3,586-GPM,3250 PSI,100 RPM -PUW 295K,SOW-198K, ROT-224K SPR'S @ 12,525'MD 8,670"TVD,TIME:15:00 #1 MP-20/30 SPM=340/420 PSI #2 MP-20/30 SPM=340/440 PSI MW 10.6 IN/10.6 OUT 15:00 - 18:00 3.00 DRILL P INTI MONITOR WELL PRIOR TO PULLING OFF BOTTOM -WELL STATIC PUMP OUT OF HOLE FROM 12,490'MD TO 11,224'MD JUST ABOVE KINGAK -2 BPM,300 PSI Printed 12/7/2012 11:21:38AM North America -ALASKA- BP Page 9 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81 ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 20:30 2.50 DRILL P INTI TOH ON ELEVATORS FROM 11,224'TO 10,225' -PULLED TIGHT AT 10,225', PULLED 30K OVER -RIH ONE FULL STAND, BACK REAM THE REST OF THE WAY OUT TO THE 9-5/8" WINDOW AT 9,610' -400 GPM,1700 PSI,80 RPM,13 K TQ, --MONITOR HOLE FILL ON ACTIVE SYSTEM-HOLE TAKING CORRECT FILL 20:30 - 21:30 1.00 DRILL P INTI CIRCULATE HOLE CLEAN IN THE 9-5/8" CASING -ROT&RECIPROCATE CBU X 1.5,550 GPM,2875 PSI,100 RPM,17 K TQ, -PUW-222K,SOW-156K, ROT-100 K 21:30 - 00:00 2.50 DRILL P INTI TIH ON ELEVATORS FROM 9,528'MD TO 12,530'MD -MONITOR DISPLACEMENT ON THE TRIP TANK. 10/23/2012 00:00 - 02:30 2.50 DRILL P INTI CIRCULATE HOLE CLEAN. ROTATE AND RICIPROCATE FROM 12,530'TO 12,470' PUMP 30 BBL HIGH VIS SWEEP -580 GPM,3070 PSI, -80 RPM,17K TQ -PUW-305K,SOW-188K,ROT 02:30 - 06:00 3.50 DRILL P INTI MONITOR WELL PRIOR TO PUMPING OUT OF THE HOLE-WELL STATIC -PUMP OUT OF THE HOLE FROM 12,530'TO 11,031 ✓ -2 BPM,320 PSI 06:00 - 08:30 2.50 DRILL P INTI POOH ON ELEVATORS ON 5"DP -F/11,031'TO 9-5/8"WINDOW @ 9,610' -MONITOR TRIP VIA TRIP TANK -CIRCULATE 2 X BOTTOMS UP -550 GPM,2800 PSI ,40 RPM,9 K TQ -MONITOR WELL-WELL STATIC -MW IN 10.7,MW OUT 10.7 -PUMP DRY JOB AND BLOW DOWN TOP DRIVE 08:30 - 13:00 4.50 DRILL P INTI POOH ON ELEVATORS ON 5"DP F/9,610'TO TO 3,450' -MONITOR TRIP VIA TRIP TANK -C/O HANDLING EQUIPMENT FOR 4"DP -CONT TOH ON ELEVATORS WITH 4"DP TO 664' -MONITOR HOLE PRIOR TO LAYING DOWN HWDP-WELL STATIC -LAY DOWN HWDP FROM 664'TO 228' 13:00 - 16:00 3.00 DRILL P INTI PJSM WITH RIG CREW AND SLB FOR LAYING DOWN MWD TOOLS WITH SOURCE -LD MWD BHA AS DIRECTED BY SLB REP 16:00 - 17:00 1.00 DRILL P INTI CLEAN&CLEAR RIG FLOOR -PULL WEAR BUSHING -RU TEST EQUIPMENT Printed 12/7/2012 11:21:38AM North America -ALASKA- BP • Page 10 oPM Operation Summary Report Common Well Name:Z-10 AFE No Event Type:RE-ENTER-ONSHORE (RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12.00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:00 - 18:30 1.50 BOPSUR P INTI INSTALL TEST PLUG AND PRESSURE TEST -250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MIN-TEST GOOD -C/O UPPER VBR'S TO 7"CASING RAMS AND 60P PRESSURE TEST - 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MIN-TEST GOOD -START RIGGING UP LINER RUNNING EQUIPMENT 18:30 - 19:30 1.00 BOPSUR P INTI PULL TEST PLUG AND INSTALL WEAR BUSHING WITH 8.75 ID 19:30 - 22:00 2.50 CASING P INTI PJSM FOR RUNNING LINER -REVIEWED PROCEDURE AND DISCUSSED WELL CONTROL HAZARDS AND CONTIGINCIES. -VERIFY MAKE UP OF 7"(VAM-TOP)BY(4-1/2 IF)CROSSOVER TO FOSV -DISCUSS USE AND MAKE UP OF SHEAR JOINT IF NEEDED FINISH RIGGING UP RUNNING EQUIPMENT 22:00 - 00:00 2.00 CASING P INTI M/U 7":26 LB-FT.L-80 BTC-MOD SHOF TRACK.BAKERLOK SHOE TRACK CONNECTIONS.FILL AND CHECK FLOATS (OK). -RIH W/7",26 LB-FT,L-80,VT HC F/127'T/ 1,073'-MD. APPLY JET LUBE SEAL GUARD,TRQ TURN EACH CONNECTION.T/11,950 FT-LBS.FILL EACH JNT. 10/24/2012 00:00 - 02:00 2.00 CASING P INTI RIH W/7",26 LB-FT, L-80,VT HC LINER PER RUNNING ORDER FROM 1,072'TO 3,052'MD -APPLY JET LUBE SEAL GUARD,TRQ TURN EACH CONNECTION.T/11,950 FT-LBS.FILL EACH JNT ✓ -FILLING PIPE EVERY 10 JOINTS • -RIH AT 70 FPM, 02:00 - 03:30 1.50 CASING P INTI CROSS OVER POINT TO DP RD CASING EQUIPMENT AND RU ELEVATORS -MU FLEX LOCK LINER HANGER AND ZXPN LINER TOP PACKER ASSEMBLY PER BAKER OIL TOOL REP TO 3084' -PU 5"DP TO 3,115' -CIRCULATE 1.5 X LINER VOLUME,WHILE INSTALLING PAL MIX -5 BPM,250 PSI,MONITOR RETURNS AT TRIP TANK -DRAIN STACK, LINER WEIGHT,PUW-100K,SOW-90K 03:30 - 07:30 4.00 CASING P INTI RIH W/7",26 LB-FT, L-80,VT HC LINER ON 5" DP PER RUNNING ORDER FROM 3,115'MD TO 9,560' -ESTABLISH CIRC EVERY 10 STANDS, -RIH AT 80 FPM -RECORDING PUW AND SOW EVERY 5 STANDS ...._..._.._.. 07:30 - 09:30 2.00 CASING P INTI CIRCULATE SURFACE TO SURFACE -STAGING PUMPS UP TO 5 BPM WITH 480 PSI MAX PRESSURE. Printed 12/7/2012 11:21:38AM North America -ALASKA- BP -„r- « ,-, 1Page 11 of 35% Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) I Start Date: 10/10/2012 End Date: 11/16/2012 IX3-012ND-C:DRILL(5,836,451.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time. 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:30 12:00 2.50 CASING N DPRB INTI RIH FROM THE WINDOW @ 9560'TO 10,660' MD. -UNABLE TO RUN PAST THIS DEPTH, LOST 50 K -WORK THE PIPE TO 10,595' ,WITH 80K OVERPULL, UNABLE TO ESTABLISH CIRCULATION. -CONT WORKING PIPE UP TO 10,500' , ATTEMPT TO ESTABLISH CIRCULATION- FAILED -PULLED UP FROM 10,500'TO TO 10,412' -ESTABLISHED CIRCULATION,STAGING PUMPS UP TO 3 BPM-127 GPM,WITH 445 PSI. 12:00 - 16:30 4.50 CASING N DPRB INTI CREW CHANGE OUT PULLED UP FROM 10,500'MD TO TO 10,412' MD -ESTABLISHED CIRCULATION,STAGING PUMPS UP TO 3 BPM-127 GPM,WITH 445 PSI. -PUW-234K,SOW-155K. -SLACK OFF FROM 10,412'MD TO 10,460'MD WILE PUMPING AT 3 BPM ,WELL PACKED OFF, MAX PRESSURE 1150 PSI -POOH ON ELEVATORS FROM 10,460'MD TO 10,214'MD -ESTABLISHED CIRCULATION -STAGE PUMPS UP TO 8 BPM, ICP-850 PSI , FCP-780 PSI -RIH PUMPING WITH 8 BPM,800 PSI ,FROM 10,214'MD TO 10,450'WELL PACKED OFF AGAIN, MAX PSI 1200 PSI -PU TO 10,425' , ESTABLISH CIRCULATION, STAGING PUMPS UP TO 8 BPM ,800 PSI -ATTEMPT TO RIH,PACKED OFF AGAINAT 10,442' MD, PU TO 10,425'MD. 16:30 - 17:00 0.50 CASING N DPRB . INTI WSL DISCUSSION WITH ODE AND ROTARY SUPT • -DECISION WAS MADE TO POOH AND PU A CLEAN OUT BHA. 17:00 - 00:00 7.00 CASING N DPRB INTI PUMP OUT OF THE HOLE FROM 10,425'TO 5,105'MD -2 BPM ,150 PSI , -PUW-228K,SOW-147K -MONITOR TRIP VIA PITS 2-3 -START RU CASING EQPT 10/25/2012 00:00 - 02:00 2.00 CASING N DPRB INTI PUMP OUT OF THE HOLE FROM 5,105'MD TO 3,150' -4 BPM,335 PSI , -MONITOR TRIP VIA PITS 2-3 02:00 - 03:00 1.00 CASING N DPRB INTI MONITOR THE WELL-WELL STATIC -PUMP DRY JOB&BLOW DOWN TOP DRIVE -LD LINER HANGER AND PACKER PER BOT REP -FINISH RIGGING UP CSG EQUIPMENT Printed 12/7/2012 11:21:38AM • North America -ALASKA-BP Page 12 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12.00:00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 09:30 6.50 CASING N DPRB INTI PJSM FOR LAYING DOWN 7'LINER -VERIFY MAKE UP OF 7"(VAM-TOP)BY(4-1/2 IF)CROSSOVER TO FOSV -DISCUSS USE AND MAKE UP OF SHEAR JOINT IF NEEDED POOH WITH 7"LINER-LAYING DOWN TO --PIPE SHED FROM 3150'TO SURFACE -HEAT AND BREAK OUT BAKER LOCKED SHOE TRACK -MISSING 3 STOP RINGS FROM JNTS 5,11,14 -MONITOR TRIP VIA THE TRIP TANK 09:30 - 10:30 1.00 CASING N DPRB INTI CLEAN AND CLEAR RIG FLOOR -RD CASING EQUIPMENT 10:30 - 11:30 1.00 CASING N DPRB INTI SERVICE AND INSPECT TOP DRIVE -PULL WEAR RING 11:30 - 14:30 3.00 CASING N DPRB INTI INSTALL TEST PLUG AND PRESSURE TEST 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MIN-TEST GOOD -C/O UPPER VBR'S TO 7"CASING RAMS AND �C PRESSURE TEST - 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MIN-TEST GOOD WEEKLY BOP FUNCTION TEST -PULL TEST PLUG&SET WEAR BUSHING WITH 8.75 ID. 14:30 - 18:00 3.50 CASING N DPRB INTI PU/MU AND RIH WITH CLEAN OUT BHA#4 TO 486'MD -SHALLOW HOLE TEST MWD WITH 553 GPM, 850 PSI—GOOD TEST -BLOW DOWN TOP DRIVE,C/O SLIP INSERTS AND ELEVATORS T04" 18:00 - 00:00 6.00 CASING N DPRB INTI RIH WITH BHA#4 ON 4"DP FROM 486'MD TO —2,660' -CHANGE TO 5"HANDLING EQUIPMENT -CONT IN THE HOLE WITH BHA#4 ON 5"DP FROM 2,660'TO 8,905'MD -MONITORING TRIP VIA TRIP TANK 10/26/2012 00:00 - 00:30 0.50 CASING N DPRB INTI -CONT IN THE HOLE WITH BHA#4 ON 5"DP FROM 8,905'MD TO 9,500'JUST ABOVE WINDOW -MONITORING TRIP VIA TRIP TANK 00.30 - 01:30 1.00 CASING N DPRB INTI CIRCULATE 2 X BOTTOMS UP -600 GPM ,2410 PSI WITH 120 RPM'S,10 K TQ -RAISE BLACK PRODUCTS TO 8 LB/BBL, • RAISE LUBE.5% SPR'S @ 9,595'MD 6,439"TVD, TIME:01:30 #1 MP-20/30 SPM=260/320 PSI #2 MP-20/30 SPM=260/320 PSI MW 10.7 IN/10.7 OUT 01:30 - 02:30 1.00 CASING N DPRB INTI TIH FROM WINDOW TO 10,265' -WASH AND REAM WITH 450-550 GPM2400 PSI,80 RPM'S,15-25 K TQ -HOLE PACKING OFF -RACK BACK A STAND Printed 12/7/2012 11:21:38AM "• �' North America -ALASKA- BP • Page 13 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12.00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual©94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT I NPT Depth Phase Description of Operations (hr) (ft) 02:30 - 03:30 1.00 CASING N DPRB INTI WORK PIPE FROM 10,260'TO 10330 -200-420 GPM,45-60 RPM,900-1800 PSI , 15-20 TQ -HOLE IS PACKING OFF AT HIGHER RATES AND ROTARY SPEEDS -MAINTAIN CIRCULATION AND WORK PIPE. 03:30 - 05:00 1.50 CASING N DPRB INTI WASHING AND REAMING FROM 10,260'TO 10353' 350-400 GPM,1280 PSI ,40 RPM,10-12K -NOT PACKING OFF 05:00 - 08:00 3.00 CASING N DPRB INTI WORKING PIPE F/10,270'TO 10,353'WITH HIGHER PUMP RATE AND ROTARY -550 GPM,2400 PSI, 60-120 RPM PUW-250K,SOW-158K,ROT-182K,15-20 TQ -NOT PACKING OFF -PU NEXT STAND WASH AND REAM DOWN FROM 10,353'TO 10,445' -550-600 GPM 2400 PSI,10-11 TQ PUW-250K,SOW-158K,ROT-182K, 20-22 TQ 08:00 - 09:00 1.00 CASING N DPRB INTI PUMP OUT OF THE HOLE TO F/10,350'TO 10,297' -550 GPM .2400 PSI, 60-120 RPM -SHOWING A 300 PSI PACK OFF 09:00 - 10:00 1.00 _ CASING N DPRB INTI POOH ON ELEVATORS F/10,297'MD TO 10,253' -PULLED 50 K OVER,WORK THROUGH OBSTRUCTION,CONT PULLING ON ELEVATORS TO 10,195',PULLED 50 K OVER AGAIN -ROTATE AND RECIPROCATE F/10,215 TO 10,195'MD 600 GPM,2442 PSI,140 RPM,18 K TO 10:00 - 11:00 1.00 CASING N LRB INTI POOH ON ELEVATORS FROM 10,195'MD TO 9,590'MD -MONITOR TRIP VIA TRIP TANK -PUW-250K,SOW-158K 11:00 - 13:00 2.00 CASING N DPRB INTI CIRCULATE AND RICIPROCATE CASING CLEAN -INCREASE MW FROM 10.7 PPG TO 11.1 PPG -600 GPM,2375 PSI,120 RPM,14 K TQ, 13:00 - 14:00 1.00 CASING N DPRB INTI OBTAIN SLOW PUMP RATES -TIH ON TO GET STABILIZERS OUT OF THE WINDOW.FROM 9590'TO 9721' 14:00 - 00:00 10.00 CASING N DPRB INTI WASH&REAM IN THE HOLE FROM 9721'TO 10,650' • -600 GPM,2535 PSI,120 RPM,15 TQ, -BACK REAM TIGHT SPOTS WITH SLIGHT 200 PSI PACK OFF AT 10,312',10,600',10635' 10/27/2012 00:00 - 14:00 14.00 CASING N DPRB INTI WASH&REAM IN THE HOLE FROM 10,650' MD TO 11,250'JUST ABOVE THE KINGAK -600 GPM.2535 PSI,120-150 RPM,15-18-22 TQ, -BACK REAM TIGHT SPOTS PUW-262K,SOW-158K, ROT-188K,-ROT TQ- 21K 14:00 - 17:30 3.50 CASING N DPRB INTI CBU X 4,WITH 600 GPM,150 RPM, -RECIPROCATE FULL STAND Printed 12/7/2012 11:21:38AM North America-ALASKA- BP • Page 14 of 33 Operation SummaryReport P P Common Well Name:Z-10 1 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 17:30 - 21:00 3.50 CASING N DPRB INTI ROT AND RECIPROCATE WHILE CIRCULATING -INCREASE MW FROM 11.1 PPG TO 11.5 PPG -600 GPM,2535 PSI,120-150 RPM.15-18-22 TQ, -PUW-250 K SOW-160 K, ROT-187K, ROT TQ-21K 21:00 - 21:30 0.50 CASING N DPRB INTI 'OBTAIN SLOW PUMP RATES @ 11,200'MD 7581'TVD,TIME:21:15 #1 MP-20/30 SPM=210/280 PSI #2 MP-20/30 SPM=200/270 PSI MW 11.5 IN/11.5 OUT 21:30 - 23:00 1.50 CASING N DPRB INTI POOH ON ELEVATORS FROM 11,100'MD TO 9,595'MD,20'INSIDE THE 9-5/8"WINDOW TIGHT SPOTS AT -10,505'-WITH 15K OVER PULL 10,176'- WTIH 25 K OVER PULL,WIPED BACK DOWN,NO OVERPULL ON THE WIPE PUW-250K,SOW-160K 23:00 - 00:00 1.00 CASING N DPRB INTI ROT AND RECIPROCATE -CBU IN THE 9-5/8"WINDOW 600_GPM,2625 PSI,120 RPM,TQ-7K 10/28/2012 00:00 - 03:30 3.50 CASING N DPRB INTI -SLIP AND CUT DRILL LINE --CUT 145' . SIM OPS RUN DIAGNOSTIC ON AMPHION SYSTEM RE-CALIBRATE BLOCK HEIGHT&HOOK LOAD SENSOR FOR TOTCO AND MWD. 0330 - 06:00 2.50 CASING N DPRB INTI TIH ON ELEVATORS FROM 9,595'MD TO 11,145' -MONITORING DISPLACEMENT VIA THE TRIP TANK -WORKING TIGHT SPOTS AT: 10,190'&10,520',WORKED THROUGH AND WIPED CLEAN -TIGHT AT 11,145'SET DOWN 30K,-UNABLE TO WORK THROUGH -PUW 250K,SOW-168K,ROT-203K W/9K TQ 06:00 - 08:00 2.00 CASING N DPRB INTI WASH AND REAM DOWN FROM 11,110'MD TO 11,275' -600 GPM,120 RPM,12-15 TQ PUW-249K,SOW-170K OBTAIN SLOW PUMP RATES -@ 11,260'MD 7659'TVD,TIME:08:30 #1 MP-20/30 SPM= 180/260 PSI #2 MP-20/30 SPM= 170/250 PSI MW 11.5 PPG IN/11.5 PPG OUT 08:00 - 12:00 4.00 CASING N DPRB INTI ATTEMPT TO RN ON ELEVATORS FROM '11,200'MD —NO GO AT 11.275'MD . PULL UP TO 11.245' MD -WASH AND REAM FROM 11.245' TO 11.580 MD 545 GPM,2460 PSI ,120 RPM,21-24 K TQ -SLIGHT PACKING OFF AT 11,370'AND 11,490' Printed 12/7/2012 11:21:38AM • North America -ALASKA- BP41111Page 15 of 33! Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 'X3-012ND-C DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time' 11/7/1989 12:00.00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81 ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 22:00 10.00 CASING N DPRB INTI -WASH AND REAM FROM 11,580 MD TO 12,360'MD 545 GPM,2570 PSI,120 RPM,18-23 K TQ -HOLE PACKING OFF AND UNLOADING INCREASED AMOUNTS OF CUTTINGS TOP DRIVE STALLING OUT WITH TORQUE VALUE INCREASING TO 26 K,W 22:00 - 00:00 2.00 CASING N DPRB INTI CIRCULATE BOTTOMS UP X 2 AT 12,360' -545 GPM WITH 120 RPM,2500 PSI. -DISCUSSED OPTIONS OF INCREASING MW FROM 11.5 TO 11.6 WITH ROTARY SUPT, ODE&TL. -WILL ATTEMPT TO GET TO BOTTOM BEFORE RAISING MW 10/29/2012 00:00 - 02:30 2.50 CASING N DPRB INTI WASH AND REAM FROM 12.360'MD TO 12.520'MD. -RAISED MUD WEIGH TO TO 11.6-PPG. -545 GPM WITH 120 RPM,2650 PSI,20-24 K TQ 02:30 - 08:30 6.00 CASING N DPRB INTI CIRCULATE AND CONDITION MUD AT 12,520' MD 8,669 TVD -ROTATE AND RECIPROCATE FROM 12,520' TO 12,420' -AT 1ST BOTTOMS UP HEAVY AMOUNT OF SPLINTERED SHALE IN RETURNS -AT 2ND BOTTOMS UP CUTTINGS DECREASING -545 GPM ,120 RPM ,2620 PSI ,22-25K TQ -INCREASING MW FROM 11.5 PPG TO 11.8 PPG TO HELP WITH HOLE INSTABILITY 08:30 - 10:30 2.00 CASING N DPRB INTI CONT ROTATE AND RECIPROCATE PUMP 40 BBL HIGH VIS SEEP @ 275 GPM,800 PSI. CONT PUMPING BOTTOMS UP X 2 AT 545 GPM,2650 PSI,120 RPM PUW-280 K,SOW-175K, ROT-220K,13K TQ OBTAIN SLOW PUMP RATES -@ 12.474' MD 8,629'TVD,TIME: 10:20 #1 MP-20/30 SPM=200/260 PSI #2 MP-20/30 SPM=210/290 PSI MW 11.8 PPG IN/11.8 PPG OUT MONITOR WELL-WELL STATIC 10:30 - 15:30 5.00 CASING N DPRB INTI PUMP OUT OF THE HOLE-F/12,520'TO 9,595' -85 GPM ,210 PSI, PUW-192K,SOW-155K 15:30 - 16:30 1.00 CASING N DPRB INTI ROTATE AND RECIPROCATE FROM 9,595'TO 9,498'IN THE 9-5/8"CASING -600 GPM,2600 PSI,160 RPM,7-8 K TQ, -PUW-195K,SOW-155K,ROT-157K, -ADD TWO DRUMS OF STEEL LUBE 16:30 - 17:00 0.50 CASING N DPRB INTI POOH ON ELEVATORS F/9498'TO 9311' -PUW-195K,SOW-148K 17:00 - 18:00 1.00 CASING P INTI RIH TO 9535', SET RTTS PER HALLIBURTON REP -RTTS IS SET 230'BELOW THE ROTARY TABLE -BD TOP DRIVE AND PREP FOR BOPE PRESSURE TEST -PULL WEAR BUSHING Printed 12/7/2012 11.21 38AM r.n North America .`* . . - . • Page Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81 ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 19:00 1.00 CASING N RREP INTI TROUBLE SHOOT/REPAIR TOP DRIVE AND FIX BOOT ON LOW PRESSURE RISER -SERVICE TOP DRIVE AND PS 21 SLIPS, 19:00 - 23:00 4.00 BOPSUR P INTI RU TEST EQUIPMENT.RU 4"TEST JOINT. • -SET MODIFIED TUBING HANGER TEST PLUG, RILDS AND TEST -FILL STACK,CHOKE&TEST JOINT WITH WATER 23:00 - 00:00 1.00 BOPSUR PINT1 TEST BOPE TO 250 PSI LOW,3500 PSI HIGH QP(1 AS PER AOGCC AND BP POLICY. 'hJ RIGHT TO WITNESS TEST WAIVED BY LOU GRIMALDI WITH AOGCC, TEST WITNESSED BY WSL ANTHONY KNOWLES AND TOOLPUSHER JOHN NEWMAN TEST BOPE.TESTED ANNULAR AND RAMS TO 250 PSI LOW/3500 PSI HIGH FOR 5 MIN EACH.TEST 4"&5"DP.ALL TESTS CHARTED. SEE BOP TEST ATTACHMENT. CLOSING TIMES: -ANNULAR=23 SECONDS -UPPER VBR=22 SECONDS -BLIND/SHEARS=23 SECONDS -LOWER VBR=21 SECONDS -CHOKE HCR=2 SECONDS -KILL HCR=2 SECONDS 10/30/2012 00:00 - 04:00 4.00 BOPSUR R INTI TEST BOPE.TESTED ANNULAR AND RAMS TO 250 PSI LOW/3500 PSI HIGH FOR 5 MIN EACH.TEST 4"&5"DP.ALL TESTS CHARTED. SEE BOP TEST ATTACHMENT. PERFORMED ACCUMULATOR TEST:SYSTEM PRESSURE 3100 PSI. MANIFOLD PRESSURE 1,500-PSI. PRESSURE AFTER CLOSING ALL RAMS AND ANNULAR PREVENTER 1,750 PSI. RECOVERED 1ST 200 PSI-20 SECONDS. FULL RECOVERY IN 94 SECONDS. AVERAGE PRESSURE 6 NITROGEN BOTTLES= 1900-PSI. C/O SAVER SUB DURING TEST 04:00 - 05:00 1.00 BOPSUR P INTI RIG DOWN TEST EQUIPMENT _ -BOLDS,PULL MODIFIED TEST PLUG&LD 05:00 - 06:30 1.50 BOPSUR P INTI PU RTTS RUNNING TOOL,RUiAND PULL. RTTS. -ENGAGE RTTS PACKER WITH RETRIEVING TOOL -CLOSE ANNULAR PREVENTER -OPEN FOSV AND VERIFY NO PRESSURE (SLIGHT VACUUM PRESENT) -P/U ONE FOOT TO UNSET PACKER -ALLOW PACKER ELEMENT TO RELAX FOR 15 MIN AND MONITOR ANNULUS FOR PRESSURE. NO PRESSURE OBSERVED. -OPEN ANNULAR PREVENTER. POOH AND UD RTTS PACKER. 06:30 - 07:00 0.50 CASING N DPRB INTI RIH ON ELEVATORS FROM 9,311'TO 9,500' MD Printed 12/7/2012 11:21:38AM North America -ALASKA- BP • Page 17 3 Qf 3 Operation Summary Report Common Well Name:Z-10 I AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 1X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.. DOYON 25 Spud Date/Time: 11/7/1989 12.00:OOAM Rig Release. 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94 81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:00 - 08:30 1.50 CASING N DPRB INTI CIRC 1.75 BOTTOMS UP -545 GPM,2280 PSI -50 RPM,6-7K TQ -P/U 193K, S/O 157K 08:30 - 11:00 2.50 CASING N DPRB INTI RIH ON ELEVATORS FROM 9,585'TO 12,400' MD -ENCOUNTER TIGHT SPOT AT 12,400' SET DOWN 35K, UNABLE TO WORK THROUGH 11:00 - 12:00 1.00 CASING N DPRB INTI REAM DOWN FROM 12,400'TO 12,520'MD -545 GPM,2700 PSI _ -120 RPM,10-12K TQ 12:00 - 14:30 2.50 CASING N DPRB INTI CIRC 2 BOTTOMS UP WHILE ROTATING AND RECIPROCATING -540 GPM,2515 PSI -120 RPM,13K TQ -P/U 272K,S/O 165K,ROT 211K 14:30 - 15:30 1.00 CASING r N DFRB INTI SET BIT AT 12,522'MD AND ROTATE PIPE WHILE WEIGHTING UP MUD FROM 11.8 PPG TO 12.1 PPG -540 GPM,2515 PSI -AT 588 BBLS INTO WEIGHT UP, ENCOUNTER 40-60 BPH LOSSES -SHUT DOWN PUMPS AND MONITOR WELL- STATIC 15:30 - 17:00 1.50 CASING N DPRB INTI STAGE PUMPS UP IN 1 BBL INCREMENTS TO OBSERVE LOSS RATE -126 GPM,10 BPH -252 GPM,25 BPH -420 GPM,35 BPH 17:00 - 21:30 4.50 CASING N DPRB INTI CONTINUE TO WEIGHT UP MUD TO 12.1 PPG WHILE RECIPROCATING -BEGIN CIRC AT 338 GPM,1285 PSI(40 BPH LOSSES) -DECREASE RATE TO 254 GPM,723 PSI(24 BPH LOSSES) -LOSS RATE DECREASED FROM 24 BPH TO 10 BPH -INCREASE RATE TO 294 GPM,1035 PSI(15 BPH LOSSES) -PUMP TOTAL OF 1400 BBLS MONITOR WELL FOR 10 MIN-15 BPH STATIC LOSS RATE -MW 12.1 IN/12.1 OUT SPR'S: 12519'MD(8687'TVD)-TIME=21:15, MW= 12.1 PPG #1 MP-20/30 SPM= 180/280 PSI #2 MP-20/30 SPM=200/280 PSI 21:30 - 22:30 1.00 CASING N DPRB INTI PUMP 65 BBL LCM PILL AT 250 GPM,1000 PSI -2 PPB ASPHASOL,20 PPB G-SEAL,10 PPB SAFE GARB 40, 10 PPB SAFE CARB 20. 10 PPB SAFE CARB 500,8 PPB SAFE CARB 750, 7 PPB SAFE CARB 1400 -SPOT 150'OF LCM PILL ABOVE TD -PUMP REMAINDER OF PILL TO WINDOW Printed 12/7/2012 11:21.38AM ... F North America- i•_ - Page 18 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date. 11/16/2012 X3-012ND-C.DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.. DOYON 25 Spud Date/Time. 11/7/1989 12.00.00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 22:30 - 00:00 1.50 CASING N DPRB INTI PUMP OUT OF HOLE AT 85 GPM,200 PSI FROM 12,372'TO 11,584'MD -P/U 263K,S/O 165K -NO LOSSES TOTAL DAILY LOSSES=166 BBLS 10/31/2012 00:00 - 03:00 3.00 CASING N DPRB INTI PUMP OUT OF HOLE AT 85 GPM,200 PSI FROM 11,584'TO 9,595'MD 03:00 - 04:30 1.50 CASING N DPRB INTI CIRCULATE BOTTOMS UP AT WINDOW WHILE ROTATING AND RECIPROCATING -STAGE PUMPS TO 545 GPM,2450 PSI -120 RPM,6K TQ -NO LOSSES MONITOR WELL FOR 10 MIN-STATIC -MW 12.1 IN/12.1 OUT 04:30 - 08:30 4.00 CASING N DPRB INTI PUMP OUT OF HOLE AT 85 GPM FROM 9,595' TO 7,984'MD 08:30 - 15:00 6.50 CASING N DPRB INTI POOH ON ELEVATORS FROM 7,984'TO 584' MD MONITOR WELL FOR 10 MIN-STATIC 15:00 - 17:00 2.00 CASING N DPRB INTI L/D CLEANOUT BHA#4 PER SLB DD -BIT GRADE 1-3-WT-A-E-1-NO-TD 17:00 - 18:30 1.50 BOPSUR,- N DPRB INT1 CHANGE OUT UPPER VBR'S TO 7"RAMS 18:30 - 19:00 0.50 BOPSUR N DPRB INTI R/U TO TEST RAMS WITH 7"TEST JOINT 19:00 - 20:00 1.00 BOPSUR N DPRB INTI TEST 7"RAMS TO 250 LOW/3500 HIGH FOR 5 MIN EACH 20:00 - 20:30 0.50 BOPSUR N DPRB INTI R/D BOP TEST EQUIPMENT 20:30 - 21:00 0.50 CASING N DPRB INTI P/U CEMENT HEAD AND INSPECT TO VERIFY DRILL PIPE DART LOCKED IN CAGE -M/U AND TORQUE CEMENT HEAD 21:00 - 22:00 1.00 CASING N DPRB INTI R/U TO RUN 7"LINER 22:00 - 22:30 0.50 CASING N DPRB INTI PJSM-RUNNING LINER WITH DDI DRILLING CREW,CASING HAND,BAKER,AND RIG TEAM. DISCUSS NON-SHEARABLE EQUIPMENT ACROSS BOP 1„ 22:30 - 00:00 1.50 CASING N DPRB INTI RUN 7"LINER ASSEMBLY PER PROGRAM -P/U 7"SHOE TRACK WITH REAMER SHOE Ir' -FILL LINER AND VERIFY FLOATS HOLDING. FLOATS GOOD -BAKER LOCK ALL BTC CONNECTIONS BELOW LANDING COLLAR JOINT -P/U 7",26 LB-FT HYD 563 LINER,APPLY JET LUBE SEAL GUARD.TORQUE TURN 7"TO TQ OF 9,400 FT-LB. -CONTINUE RIH WITH 7"LINER PER PROGRAM -MW 12.1 IN/11.6 OUT RUN LINER TO 454'MD NO LOSSES WHILE RIH Printed 12/7/2012 11:21:38AM North America -ALASKA- BP S Page 19 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81 ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/1/2012 00:00 - 06:00 6.00 CASING N DPRB INTI RUN 7"LINER ASSEMBLY PER PROGRAM -P/U 7",26 LB-FT HYD 563 LINER,APPLY JET LUBE SEAL GUARD.TORQUE TURN 7"TO TQ OF 9,400 FT-LB. -CONTINUE RIH WITH 7"LINER PER PROGRAM -MW 12.1 IN/11.6 OUT RUN LINER FROM 454'TO 3043'MD NO LOSSES WHILE RIH 06:00 - 06:30 0.50 CASING N DPRB INTI M/U BAKER LINER HANGER AND ZXP LINER TOP PACKER 06:30 - 10:00 3.50 CASING N DPRB INTI CIRC SURFACE TO SURFACE CONDITIONING MUD TO 12.1 PPG IN/12.1 PPG OUT -5 BPM,230 PSI OBTAIN CIRCULATING AND ROTATING PARAMETERS PUMPS OFF: -10 RPM,2K TQ -20 RPM,2.5K TQ -P/U 100K,S/O 94K, ROT 97K PUMPS ON AT 8 BPM,445 PSI: -10 RPM,1.5K TQ -20RPM,2KTQ -P/U 85K,S/0 82K, ROT 86K 10:00 - 20:00 10.00 CASING N DPRB INTI RIH WITH 7"LINER ON 5"DP FROM 3,112'TO 9,556'MD ✓ -CIRC BOTTOMS UP EVERY 10 STANDS _ -MW 12.1 IN/12.1 OUT 20:00 - 21:30 1.50 CASING N DPRB INTI CIRC 1.5X BOTTOMS UP AT WINDOW -8 BPM,720 PSI OBTAIN CIRCULATING AND ROTATING PARAMETERS -P/U 208K,S/O 149K,ROT 175K PUMPS OFF: -10 RPM,8K TQ -20 RPM,7K TQ PUMPS ON: -1 BPM,200 PSI -2 BPM,260 PSI -3 BPM,310 PSI -4 BPM,375 PSI -5 BPM,440 PSI -10RPM,7KTQ -20 RPM,7K TQ 21:30 - 22:30 1.00 CASING N DPRB INTI RIH WITH 7"LINER ON 5"DP FROM 9,556'TO 10,600'MD -FILL PIPE EVERY 10 STANDS 22:30 - 00:00 1.50 CASING P INTI CONTINUE RIH WITH 7"LINER ON 5"DP FROM 10,600'TO 11,640'MD -P/U 284K, S/O 160K 11/2/2012 00:00 - 01:00 1.00 CASING P INTI CONTINUE RIH WITH 7"LINER ON 5"DP FROM 11,640'TO 12375'MD -P/U 284K,S/O 160K Printed 12/7/2012 11:21:38AM North America -ALASKA- BP Page 20 of 33 Operation Summary,Report Re ort t. Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81 ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:00 - 02:30 1.50 CASING P INTI ESTABLISH CIRCULATION BY STAGING PUMPS UP IN 1 BPM INCREMENTS -1 BPM,290 PSI -2 BPM,370 PSI -3 BPM,450 PSI -4 BPM,560 PSI -5 BPM,680 PSI NO LOSSES 02:30 - 05:30 3.00 CASING P INTI WASH LINER TO TD AT 5 BPM,750 PSI -M/U CEMENT HEAD AND TAG BOTTOM AT 12,518'MD -ATTEMPT TO WASH LINER TO BOTTOM WITH NO ROTATION,UNABLE TO WORK PAST 12,518'MD 05:30 - 09:30 4.00 CASING P INTI REAM LINER DOWN FROM 12,515'TO 12,522' MD -5 BPM,650 PSI -10 RPM,13-18K TQ 09:30 - 12:30 3.00 CASING P INTI CIRCULATE 5 BOTTOMS UP WHILE CONDITION MUD -5 BPM,600 PSI -INITIAL LOSSES WHILE CIRCULATING AT 36 BPH AT 5 BPM -LOSSES DIMINISHED TO 6 BPH Printed 12/7/2012 11:21:38AM �. .- • .. North America -ALASKA- BP • Page 21 of 33 O.eration Summary Report Common Well Name Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 1X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.. DOYON 25 Spud Date/Time. 11/7/1989 12:00.00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual©94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations 1" (hr) (ft) 12:30 - 17:30 5.00 CEMT P INTI CEMENT 7"LINER AS FOLLOWS: L"" -HOLD PJSM WITH RIG CREW,SLB CEMENTGt,c'( CREW AND BPXA CEMENT PUMPING: -PUMP 5 BBLS 12.15 PPG MUD PUSH AT 3 BPM -PRESSURE TEST LINES TO 250 LOW/5,000 HIGH FOR 5 MIN EACH. GOOD TEST -PUMP 50 BBLS 12.15 PPG MUD PUSH AT 5 BPM PUMP 84 BBLS,_ 12.0 PPG LITECRETE CEMENT AT 4.8 BPM,YIELD 1.64 CU FT/SX (288 SX),2 PPB CEMNET IN 1ST 50 BBLS PUMP 37 BBLS,15.8 PPG CLASS G CEMENT AT 4.7 BPM,YIELD 1.17 CU FT/SX(178 SX) -DROP DRILL PIPE WIPER DART. POSITIVE INDICATION DART LEFT CEMENT HEAD. -DISPLACE WITH CEMENTERS WITH 12.1 PPG LSND MUD AT 5 BPM,580 PSI -NO RECIPROCATION THROUGHOUT JOB -157 BBLS AWAY. LATCH UP WIPER PLUG WITH 1240 PSI -DISPLACE AT 5 BPM,PRESSURE STEADILY INCREASING TO 900 PSI -257.9 BBLS AWAY: SLOW PUMP TO 2 BPM PRIOR TO BUMP -BUMP PLUG AT 273.5 BBLS,450 PSI(3.5 BBLS EARLIER THAN CALCULATED DISPLACEMENT) -PRESSURED UP ON PLUG TO 3,500-PSI TO SET LINER HANGER,SLACK OFF TO CONFIRM HANGER SET -BLEED OFF PRESSURE&CHECK FLOATS. FLOATS HOLDING. -P/U TO CONFIRM RUNNING TOOL RELEASED -CEMENT IN PLACE AT 17:30 HRS -TOTAL OF 23.5 BBLS LOST WHILE DISPLACING CEMENT -GOOD LIFT PRESSURE THROUGHOUT JOB 17:30 - 18:30 1.00 CEMT P INTI RELEASE LINER RUNNING TOOL -PRESSURE UP TO 4,500 PSI TO RELEASE RUNNING TOOL -P/U TO 240K, DID NOT APPEAR TO RELEASE -BLEED OFF PRESSURE AND RE-PRESSURIZE TO 4,800 PSI -P/U TO 260K, STILL DID NOT APPEAR TO RELEASE EMERGENCY RELEASE LINER RUNNING TOOL -APPLY LEFT HAND TORQUE AND WORK TORQUE DOWN TO RUNNING TOOL, SUCCESSFUL RELEASE Printed 12/7/2012 11.21:38AM „„ , 7 _. �` � {- �` North America -ALASKA- BP ,,--.-,,,,,-::-.,n-::;,-,-;. 4,-',1,',,,„� Page 22 0 � Operation Summary Report , Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:30 - 20:30 2.00 CEMT P INTI SET LINER TOP PACKER AND CIRC OUT CEMENT -PICK UP 5'TO EXPOSE DOG SUB. -SET ZXP LINER TOP PACKER WITH 60K. -ROTATE WITH 60K ON WT TO CONFIRM 7” LINER TOP PACKER SET. -PICK UP WITH 500 PSI ON DRILL PIPE UNTIL PRSSURE DROP OBSERVED. -PULL OUT OF LINER&CIRCULATE EXCESS CEMENT OUT AT 12 BPM @ 1,110 PSI. -6BBLS CEMENT RETURNED TO SURFACE MONITOR WELL FOR 10 MIN-STATIC 20:30 - 00:00 3.50 CEMT P INTI POOH WITH LINER RUNNING TOOL FROM 9,350'TO 2,653'MD TOTAL DAILY LOSSES=99 BBLS 11/3/2012 00:00 01:30 1.50 CEMT , P . INT1 POOH WITH LINER RUNNING TOOL FROM 2,653'TO SURFACE 01:30 - 02:00 0.50 CEMT P INTI UD LINER RUNNING TOOL 02:00 - 02:30 0.50 CEMT -P INTI P/U CEMENT HEAD. BREAK AND UD SINGLE FROM BOTTOM AND 15'PUP FROM TOP 02:30 - 03:30 1.00 CEMT P INTI M/U STACK WASHER AND FLUSH STACK 03:30 - 11:00 7.50 EVAL P INTI R/U E-LINE AND RIH WITH GYRO -SURVEY FROM 9,503'TO 9,750'MD -UNABLE TO GET GYRO BELOW 9,750'MD -POOH AND R/D E-LINE 11:00 - 12:30 1.50 BOPSUR P INTI .:.L • -- : - - :. i • - 5-1/2"VBR'S 12:30 - 13:00 0.50 BOPSUR P INTI R/U BOP TEST EQUIPMENT 13:00 - 14:00 1.00 BOPSUR P ` INTI TEST 2-7/8"X 5-1/2"VBR'S WITH 4"AND 5" TEST JOINT TO 250 LOW/3500 HIGH FOR 5 MIN EACH 14:00 - 14:30 0.50 BOPSUR P INTI R/D BOP TEST EQUIPMENT ✓, 14:30 - 16:00 1.50 CASING P • INTI MOBILIZE HANDLING EQUIPMENT TO RIG FLOOR FOR P/U BHA 16:00 - 20:00 4.00 CASING P INTI MAKE UP 6 1/8"ARCHER RSS DRILLING ASSEMBLY BHA#5 TO 303'MD -SURFACE TEST ARCHER -210 GPM,730 PSI 20:00 - 22:00 2.00 CASING P INTI RIH WITH 4"DRILLPIPE FROM DERRICK FROM 303'TO 874'MD -BREAK, DOPE,AND RE-TORQUE EACH CONNECTION -TUBOSCOPE REP INSPECTING EACH TOOL JOINT 22:00 - 23:00 1.00 CASING N DFAL INTI SHALLOW HOLE TEST MWD AT 212 GPM, 1180 PSI -ADN COMMUNICATION FAILURE 23:00 - 23:30 0.50 CASING N DFAL INTI POOH FROM 874'TO 304'MD MONITOR WELL FOR 10 MIN-STATIC 23:30 - 00:00 0.50 CASING N DFAL INTI STAND BACK JAR AND COLLAR STANDS FROM 304'TO 101'MD -REMOVE RA SOURCE FROM ADN 11/4/2012 00:00 - 01:30 2.50 CASING N DFAL INTI UD ADN,VPWD,AND IMPULSE TOOLS Printed 12/7/2012 11:21:38AM North America -ALASKA- BP s, Page 23 of 33 Operation Summary Reportb � �,� Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time. 11/7/1989 12:00.00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI. Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:30 - 02:30 1.00 CASING N DFAL INTI MAKE UP 6 1/8"ARCHER RSS DRILLING ASSEMBLY BHA X16 TO 303'MD -CHANGE OUT IMPULSE,VPWD,AND ADN 02:30 - 03:00 0.50 CASING N DFAL INTI RIH WITH PRODUCTION DRILLING BHA TO 874'MD 03:00 - 03:30 0.50 CASING P INTI SHALLOW HOLE TEST MWD-GOOD TEST -210 GPM,1060 PSI 03:30 - 10:00 6.50 CASING P INTI 'RIH WITH 4"DRILLPIPE FROM DERRICK FROM 874'TO 2,868'MD -BREAK, DOPE,AND RE-TORQUE EACH CONNECTION -TUBOSCOPE REP INSPECTING EACH TOOL JOINT -CHANGE OUT 3 JOINTS OF 4"DRILLPIPE -FILL PIPE EVERY 9 STANDS 10:00 - 14:30 4.50 CASING P INTI RIH WITH 4"DRILLPIPE DOUBLES FROM PIPESHED FROM 2,868'TO 6,764'MD -FILL PIPE EVERY 9 STANDS 14:30 - 20:00 5.50 CASING P INTI RIH WITH 5"DRILLPIPE FROM 6,764'TO 12,166'MD -FILL PIPE EVERY 9 STANDS 20:00 - 20:30 0.50 CASING N DPRB INTI M/U TOPDRIVE AND ATTEMPT TO ESTABLISH .CIRCULATION FOR MAD PASS -UNABLE TO ESTABLISH CIRCULATION -DRILLSTRING PRESSURED UP TO 2000 PSI WITH NO BLEED OFF 20:30 - 21:00 0.50 CASING N DPRB INTI POOH TO LAST CIRCULATION DEPTH AT 11,503'MD 21:00 - 21:30 0.50 CASING N DPRB INTI M/U TOPDRIVE AND ESTABLISH CIRCULATION -STAGE UP PUMPS TO 212 GPM,1990 PSI 21:30 - 22:30 1.00 CASING N DPRB INTI RIH TO 12,166'AND ATTEMPT TO ESTABLISH CIRCULATION -DRILLSTRING PRESSURING UP, UNABLE TO CIRCULATE 22:30 - 23:00 0.50 CASING N DPRB INTI POOH TO 11,503'MD -STEAM EACH STAND TO ENSURE NO BLOCKAGE 23:00 - 00:00 1.00 CASING N DPRB INTI ESTABLISH CIRCULATION AND WASH DOWN FROM 11,503'TO 11,787' -212 GPM,2050 PSI 11/5/2012 00:00 - 00:30 0.50 CASING N DPRB INTI WASH DOWN FROM 11,787'TO 12,166'MD -212 GPM,2050 PSI 00:30 - 02:00 1.50 CASING N SFAL INTI WASH DOWN FROM 12,166'TO 12,356'MD -ATTEMPT TO MAD PASS,UNABLE TO GET MWD SIGNAL -ENCOUNTER DIFFICULTY KEEPING PRIME TO PUMP 02:00 - 03:00 1.00 CASING N SFAL INTI WASH DOWN FROM 12,356'AND TAG FLOAT COLLAR ON DEPTH AT 12,434' -TROUBLESHOOTING ISSUE GETTING PUMP PRIME,LOOSING PUMP PRESSURE 03:00 - 04.00 1.00 CASING P INTI DROP WELL COMMANDER 1 76"OPENING BALL -PUMP DOWN AT 84 GPM,500 PSI -OPEN WELL COMMANDER WITH 2511 PSI 04:00 - 08:00 4.00 CASING P INTI DISPLACE WELL TO 8.7 PPG POWER-PRO MUD -294 GPM, ICP= 1500 PSI, FCP=550 PSI Printed 12/7/2012 11:21:38AM North America -ALASKA- BP • Page 24 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:00 - 09:00 1.00 CASING P INTI DROP WELL COMMANDER 1.76"CLOSING BALL -PUMP DOWN AT 84 GPM,225 PSI SPR'S: 12430'MD(8605'TVD)-TIME=09:00, MW=8.8PPG #1 MP-20/30 SPM=350/490 PSI #2 MP-20/30 SPM=310/470 PSI 09:00 - 10:30 1.50 CASING P INTI R/U AND PRESSURE TEST 7"LINER TO 250 LOW/3500 HIGH FOR 5/30 MIN -GOOT TEST -R/D TEST EQUIPMENT -WTL APPROVED TO PROCEED 10:30 - 11:00 0.50 CASING P INTI PERFORM NEGATIVE PRESSURE TEST ON LINER FOR 30 MIN-STATIC 11:00 - 12:00 1.00 EVAL P INTI R/U SLB E-LINE WITH GYRODATA GYRO 12:00 - 17:00 5.00 EVAL P INTI RIH WITH GYRO ON E-LINE AND RUN GYRO SURVEYS FROM 9510'TO 10099' -POOH AND R/D E-LINE 17:00 - 18:30 1.50 CASING P INTI POOH TO 12,261'AND MAD PASS DOWN FROM 12,300'TO 12,434'MD AT 300 FT/HR -240 GPM,1520 PSI --30 RPM,6-8K TQ 18:30 - 00:00 5.50 CASING P INTI DRILL SHOE TRACK FROM 12,434'TO 12,520' MD -220 GPM,1360 PSI -60 RPM,5-7K TQ -10-15K WOB 11/6/2012 00:00 - 03:30 3.50 CASING P INTI DRILL SHOE TRACK AND 20'OF NEW FORMATION TO 12.550'MD -250 GPM,1520 PSI -60 RPM,5-7K TQ -10K-15K WOB 03:30 - 05:00 1.50 CASING P INTI CIRCULATE BOTTOMS UP WHILE ROTATING AND RECIPROCATING -270 GPM,1790 PSI -40 RPM,5K TQ 05:00 - 06:00 1.00 CASING P INTI POOH INTO 7"SHOE @—12,450'MD AND R/U TO PERFORM FIT 06:00 - 07:30 1.50 DRILL P INTI ATTEMPT TO OBTAIN A FIT TO 12.0 PPG -OBTAIN 11.5 PPG EMW(LOT)LEAK OFF PRESSURE AT 9610'MD 6446'TVD WITH 1200 PSI AT SURFACE -8.8 PPG MUD -APPROVAL TO PROCEED FROM THE ODE 07:30 - 08:30 1.00 DRILL P PROD1 REAM DOWN F/12,450'MD T/12,550'MD -PUMP WEIGHTED LOW-VIS FOLLWED BY HI-VIS SWEEP TO CLEAR BHA -200 GPM,1200 PSI -30 RPM,9K-10K TQ -13K WOB Printed 12/7/2012 11:21.38AM North America-ALASKA- BP Page 25 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12.00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task ' Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 14:30 6.00 DRILL P PROD1 CONTINUE TO DRILL 6-1/8"PRODUCTION HOLE FROM 12,550'MD TO 12,704'MD 8,811' ND -275 GPM,1840 PSI ON/1790 PSI OFF -140 RPM,15K OFF BOT TQ,17K ON BOT TQ -13WOB, -MW 8.8 IN/8.8 OUT -AST=11.34,ART=9.21,ADT=20.55 PU=232K,SO=188K,ROT=202K SPR'S @ 12,530'MD 8,670'ND,TIME:05:30 #1 MP-20/30 SPM=400/560 PSI #2 MP-20/30 SPM=400/560 PSI SPR'S @ 12,704'MD 8,811'ND,TIME:14:30 #1 MP-20/30 SPM=400/700 PSI #2 MP-20/30 SPM=400/720 PSI -MONITOR WELL FOR 10 MIN. 14:30 - 15:30 1.00 DRILL -N HMAN PROD1 POOH TO 12,545'MD.RIH T/12,704'MD 15:30 - 16:00 0.50 DRILL N HMAN PROD1 PERFORM SURVEY QUADRANT ROLL TEST 274 GPM,1255 PSI 16:00 - 17:00 1.00 DRILL P PROD1 CONTINUE TO DRILL 6-1/8"PRODUCTION HOLE FROM 12,704'MD TO 12,732'MD 8,811' ND -275 GPM,1840 PSI ON/1790 PSI OFF -140 RPM,15K OFF BOT TQ,9-11K ON BOT TQ -13 WOB, -MW 8.8IN/8.8 OUT -AST=11.34,ART=9.21,ADT=20.55 -PU=232K,SO=188K, ROT=202K 17:00 - 19:00 2.00 DRILL N HMAN PROD1 PERFORM SURVEY QUADRANT ROLL TEST -274 GPM,1980 PSI -MONITOR WELL FOR 10 MIN(WELL IS STATIC) UNABLE TO GET CLEAN SURVEYS, HIGH MAGNETIC INTERFERENCE IN MWD TOOL. -DECISION FROM ODE AND WTL TO POOH AND CHANGE OUT MWD AND ARCHER TOOLS 19:00 - 20:00 1.00 DRILL N HMAN PROD1 POOH F/12,732'MD T/11,503'MD -MONITOR HOLE FILL VIA TRIP TANK 20:00 - 20:30 0.50 DRILL N HMAN PROD1 PUMP DRY JOB -212 GPM,1255 PSI 20:30 - 00:00 3.50 DRILL N HMAN PROD1 POOH F/11,503'MD T/5,527'MD -MONITOR HOLE VIA TRIP TANK 11/7/2012 00:00 - 03:00 3.00 DRILL N HMAN 12,733.00 PROD1 POOH F/5,527'MD TO SURFACE -MONITOR WELL FOR 10 MIN BEFORE PULLING NON-SHEARABLE ACROSS BOPE 03:00 - 08:00 5.00 DRILL N HMAN 12,733.00 PROD1 LD ARCHER BHA#6, MU PRODUCTION • DRILLING BHA#7 W/1.37 DEG SHORTPAK -IT WAS FOUND THAT A MAGNATE WAS ERRANTLY LEFT ON MWD TOOL AND WAS THE CAUSE OF THE SURVEY INTERFERENCE WHILE TRYING TO DRILL. -BIT GRADE:2-4-BT-S-X-1-JD-DTF Printed 12/7/2012 11:21:38AM North America-ALASKA- c�� Page 26 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type. RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12.00:00AM Rig Release. 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:00 - 08:30 0.50 DRILL N HMAN 12,733.00 PROD1 WAIT ON ORDERS FROM TOWN 08:30 - 09:30 1.00 DRILL N HMAN 12,733.00 PROD1 LD BHA#7. 09:30 - 10:30 1.00 DRILL N HMAN 12,733.00 PROD1 MOBILIZE BHA#8 -SIMOPS:SERVICE TOP DRIVE 10:30 - 13:00 2.50 DRILL N HMAN 12,733.00 PROD1 MU BHA#8 -BIT, ARCHER#2,ADN SUB,WELL COMMANDER 13:00 - 22:00 9.00 DRILL N HMAN 12,733.00 PROD1 RIH WITH BHA#8 TO 12,540'MD -MONITOR DISPLACEMENT VIA TRIP TANK 22:00 - 22:30 0.50 DRILL P 12,733.00 PROD1 SERVICE AND INSPECT TOP DRIVE 22:30 - 00:00 1.50 DRILL N HMAN 12,733.00 PROD1 RIH F/12,450'MDT/12,545'MD -REAM F/12,560'MD T/12,640'MD W/30K SET DOWN WT -246 GPM,1640 PSI -40 RPM,7K-8K TQ -OBTAIN SURVEYS EVERY 30'F/12,576'MD T/12,640'MD 11/8/2012 00:00 - 00:30 0.50 DRILL N HMAN PROD1; CONT.TO REAM F/12,640'MD T/12,732'MD -246 GPM,1640 PSI -40 RPM.7-9K TQ -OBTAIN SURVEYS EVERY 30'. 00:30 - 03:00 2.50 DRILL N DFAL PROD1 UNABLE TO GET COMMUNICATION WITH ARCHER TOOL.TROUBLESHOOT TOOL. -PUMP LO-HI VIS SWEEPS.CYCLE PUMPS, USE HIGH PUMP, USE HIGH PUMP AND HIGH ROTARY ATTEMPT DOWNLINK -CONTACT ODE FOR PLAN FORWARD -DECISION MADE TO POOH 03:00 - 05:30 2.50 DRILL N DFAL PROD1 POOH F/12,722'MD T/12,067'MD -MONITOR DISPLACEMENT VIA TRIP TANK 05:30 - 06:00 0.50 DRILL N DFAL PROD1 PUMP 30 BBL DRY JOB 06:00 - 13:00 7.00 DRILL N DFAL PROD1 POOH W/5"DP AND 4"DP -MONITOR DIPLACEMENT VIA TRIP TANK 13:00 - 15:00 2.00 DRILL N DFAL PROD1 LD ARCHER BHA#8 -PJSM,REMOVE SOURCES F/ADN -BIT GRADE:2-2-BT-T-X-1-CT-DTF 15:00 - 15:30 0.50 DRILL N DFAL PROD1 CLEAN AND CLEAR RIG FLOOR 15:30 - 17:00 1.50 DRILL N DFAL PROD1 MU 6-1/8"PRODUCTION DRILLING(MOTOR) BHA#9 -PERFORM KICK W.TRIPPING DRILL(D1)W/ NON-SHEARABLES ACROSS BOPE -PU SHEAR JOINT F/PIPE SHED -DRILL AAR 17:00 - 18:00 1.00 DRILL N DFAL PROD1 RIH W/BHA#9 FROM 300'MD TO 1,061'MD 18:00 - 18:30 0.50 DRILL N DFAL PROD1 PERFORM SHALLOW PULSE TEST FOR MWD (GOOD TEST) -250 GPM,930 PSI 18:30 - 00.00 5.50 DRILL N DFAL PROD1 RIH W/4"x 5"TAPERED STRING F/1,061'MD T/9,130'MD -MONITOR DISPLACEMENT VIA PIT#2 11/9/2012 00:00 - 02:00 2.00 DRILL N DFAL PROD1 RIH W/BHA#9 F/9,130'MDT/12,447'MD -MONITOR DISPLACEMENT VIA PIT#2 Printed 12/7/2012 11:21:38AM North America -ALAS =BP � ����' Page 27 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:00 - 05:00 3.00 DRILL P PROD1 SLIP AND CUT 160'DRILLING LINE. RE-CALIBRATE AMPHION,TOTCO,AND MWD BLOCK HEIGHT. -P/U=230K -5/0= 178K 05:00 - 05:30 0.50 DRILL N DFAL PROD1 RIH FROM 12,447'MD TO 12,637'MD 05:30 - 06:00 0.50 DRILL N DFAL PROD1 REAM IN HOLE FROM 12,637'MD TO 12,732' MD 250 GPM,1775 PSI 40 RPM,TQ=8-10K 06:00 - 12:00 6.00 DRILL P PROD1 . DRILL F/12,732'MD T/12,994'MD AST=2.34 HRS,ART=.74,ADT=3.08 HRS TOTAL BIT HRS=3.08,TOTAL JAR HRS=6.8 SPR'S: 12,688'MD(8,802'TVD)-TIME=05:30, MW=8.8 PPG #1 MP-20/30 SPM=450/580 PSI #2 MP-20/30 SPM=450/580 PSI 12:00 - 00:00 12.00 DRILL P PROD1 DRILL F/12,994'MD T/13,468'MD 8,915'TVD AST=4.56 HRS,ART=1.67 HRS,ADT=6.23 .HRS TOTAL BIT HRS=9.31,TOTAL JAR HRS=11.9 SPR'S: 13,468'MD(8,915'TVD)-TIME=16:10, MW=8.8 PPG #1 MP-20/30 SPM=560/660 PSI #2 MP-20/30 SPM=560/660 PSI 11/10/2012 00:00 - 12:00 12.00 DRILL P PROD1 CONT TO DRILL 6-1/8"PRODUCTION HOLE F/ 13,487'MD T/14,056'MD(8,882'TVD) -251 GPM,1700 PSI ON/1440 PSI OFF -40 RPM,TQ=13K ON/12K OFF WOB=9K -MW=8.8 PPG IN/8.8 PPG OUT -P/U=246K,S/0=173K, ROT=207K AST=3.09 HRS,ART=3.23,ADT=6.32 HRS TOTAL BIT HRS=14.73,TOTAL JAR HRS= 18.3 SPR'S: 13,582'MD(8,885'TVD)-TIME=02:00, MW=8.8 PPG #1 MP-20/30 SPM=500/620 PSI #2 MP-20/30 SPM=500/620 PSI 12:00 - 00:00 12.00 DRILL P PROD1 CONT TO DRILL 6-1/8"PRODUCTION HOLE F/ 14,056'MD T/14,532'MD(8,831'TVD) -251 GPM,1650 PSI -40 RPM,TQ=13-14K -MW=8.8 PPG IN/8.8 PPG OUT -P/U=172K,S/0=252K,ROT=202K AST=3.09 HRS,ART=3.23,ADT=6.32 HRS TOTAL BIT HRS=19.79,TOTAL JAR HRS= 21.8 SPR'S: 13,582'MD(8,885'TVD)-TIME=02:00, MW=8.8 PPG #1 MP-20/30 SPM=500/620 PSI #2 MP-20/30 SPM=500/620 PSI Printed 12/7/2012 11:21:38AM North America-ALASKA- BP Page 28 of 33 Operation Summary Report Common Well Name.Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/11/2012 00:00 - 12:00 12.00 DRILL P PROD1 CONT TO DRILL 6-1/8"PRODUCTION HOLE F/ 14,532'MD T/15,173'MD(8,857'ND) -250 GPM,1670 PSI -60 RPM,TQ=14-15K -P/U=256K,S/O=166K, ROT=203K AST=2.48 HRS,ART=3.54,ADT=6.02 HRS TOTAL BIT HRS=25.87,TOTAL JAR HRS= 29.4 SPR'S: 15,002'MD(8,870'ND)-TIME=09:00, MW=8.8 PPG #1 MP-20/30 SPM=550/680 PSI #2 MP-20/30 SPM=550/660 PSI 12:00 - 21:00 9.00 DRILL P PROD1 CONT TO DRILL 6-1/8"PRODUCTION HOLE F/ 15,173'MD T/15,486'MD(8,881'ND) -250 GPM,1680 PSI -40 RPM,TQ= 14K -P/U=280K,S/O=170K, ROT=214K AST=2.76 HRS,ART=1.36,ADT=4.12 HRS TOTAL BIT HRS=29.99,TOTAL JAR HRS= 33.52 ENCOUNTERED LOSSES AT 15,475'MD 21:00 - 00:00 3.00 DRILL P PROD1 CONSULT TOWN,POOH 100'ABOVE LOSS ZONE(15,384'MD) CIRCULATE AND ESTABLISH LOSS RATE WHILE MIXING LCM PILLS -250 GPM, 120 BPH LOSS RATE -125 GPM,100 BPH LOSS RATE -68 GPM,85 BPH LOSS RATE -STATIC LOSS RATE= 35 BPH BEGIN PUMPING TANDEM LCM PILLS AT 125 GPM,630 PSI -35 BBL COURSE(FIBROUS)PILL FOLLOWED BY 35 BBL FINE(CARBONATE)PILL(BOTH PILLS 40 LB/BBL) 11/12/2012 00:00 - 02:30 2.50 DRILL N DPRB PROD1 CONTINUE PUMPING TANDEM LCM PILLS,35 BBL COURSE(FIBROUS)PILL FOLLOWED BY 35 BBL FINE(CARBONATE)PILL(BOTH PILLS 40 LB/BBL) -ESTABLISH LOSS RATE AFTER PILL -125 GPM,60 BPH LOSS RATE - 68 GPM,50 BPH LOSS RATE -STATIC LOSS RATE= 8 BPH 02:30 - 05:30 3.00 DRILL P PROD1 CONT TO DRILL 6-1/8"PRODUCTION HOLE F/ 15,486'MD T/15,607'MD -215 GPM,1340 PSI ON/1180 OFF -60 RPM,TQ=15K -P/U=266K,S/O=164K,ROT=211K AST=1.19 HRS,ART=.12,ADT=1.31 HRS TOTAL BIT HRS=31.30,TOTAL JAR HRS= 31.30 05:30 - 07:30 2.00 DRILL N DPRB PROD1 ESTABLISH LOSS RATE AND CONSULT WITH TOWN -3 BPM,730 PSI -50 BPH LOSSES STATIC LOSSES-12 BPH Printed 12/7/2012 11:21:38AM North America -ALASKA- BP • Page 29 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) • 07:30 - 08:30 1.00 LCR N DPRB PROD1 DROP 1.76"ACTIVATION BALL TO OPEN WELL COMMANDER. -PUMP DOWN AT 2 BPM,550 PSI 08:30 - 10:00 1.50 LCR N DPRB PROD1 PUMP OUT OF HOLE F/15,560'MDT/15,000' MD TO SEAT BALL -BALL ON SEAT AT 240 BBLS 10:00 - 12:00 2.00 LCR N DPRB PROD1 DROP BHA ISOLATION BALL. RIH T/15,572' MD. PUMP 23 BBLS AND CONT TO PUMP DOWN BALL WITH 50 BBLS OF 80 PPB LCM PILL WHILE RECIP F/15,572'MD T/15,480'MD. 12:00 - 16:30 4.50 LCR N DPRB PROD1 SPOT LCM PILL ACROSS LOSS ZONE WHILE POOH F/15,570'MD T/12,356'MD. -45 GPM,140 PSI -PULLED 20K OVER AT 14,700'MD T/14,600' MD -.60 RPM,16K TQ 16:30 - 18:00 1.50 LCR N DPRB PROD1 ESTABLISH STATIC LOSS RATE WHILE IN 7" LINER -3.5 BPH LOSS RATE 18:00 - 18:30 0.50 LCR N DPRB PROD1 RIH F/12,356'MD T/13,206'MD -CIRCULATE THROUGH WELL COMMANDER AT 13,000'MD 18:30 - 19:30 1.00 LCR N DPRB PROD1 UNABLE TO ESTABLISH CIRCULATION PRESSURE UP TO 1650 PSI -WORK STRING TO FREE OBSTRUCTION, UNSUCCESSFUL -BLOW DOWN TOP DRIVE -PRESSURE UP TO 3500 PSI IN 500 PSI INCREMENTS -PRESSURE NOT BLEEDING OFF, UNABLE TO FREE OBSTRUCTION 19:30 - 20:30 1.00 LCR N DPRB PROD1 MONITOR WELL FOR 10 MIN,POOH ON ELEVATORS F/13,206'MD T/12,258'MD -MONITOR VIA PIT#2 20:30 - 21:00 0.50 LCR N DPRB PROD1 ATTEMPT TO ESTABLISH CIRCULATION -PRESSURE UP TO 3,000 PSI -UNABLE TO ESTABLISH CIRCULATION -BLOW DOWN TOP DRIVE -DROP 1.76"WELL COMMANDER ACTIVATION BALL 21:00 - 23:30 2.50 LCR N DPRB PROD1 POOH FROM F/12,256'MD T/9,415'MD -MONITOR WELL VIA PIT#2 23:30 - 00:00 0.50 LCR N DPRB PROD1 ATTEMPT TO ESTABLISH CIRCULATION -OPEN WELL COMMANDER W/2,200 PSI -CIRCULATE THROUGH WELL COMMANDER -130 GPM.290 PSI TOTAL DAILY MUD LOSS=709 BBLS 11/13/2012 00:00 - 01:00 1.00 LCR N DPRB PROD1 DROP 1.76"WELL COMMANDER CLOSING BALL -2 BPM,230 PSI -BALL ON SEAT AT 38 BBLS -PRESSURE UP TO 3500 PSI -HOLD FOR 5 MIN WITH NO PRESSURE LOSS. DROP 1.76"BALL TO OPEN WELL COMMANDER -UNABLE TO CIRC BALL DOWN Printed 12/7/2012 11:21:38AM • North America -ALASKA-BP Page 30 of 33; • Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 . End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI. Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:00 - 02:00 1.00 LCR N DPRB PROD1 MONITOR WELL. POOH F/9,415'MDT/8,370' MD. DROP 1.76"WELL COMMANDER OPENING BALL 02:00 - 02:30 0.50 LCR N DPRB PROD1 ATTEMPT TO ACTIVATE WELL COMMANDER -PSI UP TO 2600 PSI,WELL COMMANDER OPENED CIRC AT 5 BPM,300 PSI 02:30 - 06:00 3.50 LCR N DPRB PROD1 CONT POOH ON ELEVATORS F/8,370'MD -MONITOR DISP VIA TRIP TANK. 06:00 - 07:00 1.00 LCR N DPRB PROD1 LD MOTOR BHA#9 -BIT GRADE:0-0-PJ5-A-X-I-NO-HP 07:00 - 08:00 1.00 LCR N DPRB PROD1 ATTEMPT TO REMOVE SOURCE -UNSUCCESSFUL DUE TO LCM ON TOP OF SOURCE -FLUSH OUT ADN -REMOVE RADIOACTIVE SOURCE AS PER SLB. 08:00 - 08:30 0.50 LCR N DPRB PROD1 L/D BHA TO SURFACE AS PER DD. -MONITOR DISP VIA TRIP TANK. 08:30 - 09:30 1.00 BOPSUR P PROD1 FUNCTION TEST BOPE. -PULL WEAR BUSHING. 09:30 - 10:00 0.50 BOPSUR P PROD1 R/U TEST EQUIPMENT -R/U CIRC EQUIPMENT TO FILL WHILE TESTING -STATIC LOSS RATE=4 BPH 10:00 - 15:30 5.50 BOPSUR P PROD1 TEST BOPE.TESTED ANNULAR AND RAMS TO 250 PSI LOW/3500 PSI HIGH FOR 5 MIN EACH.TEST 4"&5"DP.ALL TESTS CHARTED. SEE BOP TEST ATTACHMENT. PERFORMED ACCUMULATOR DRAWDOWN TEST: • -ACCUMULATOR PSI=3000,MANIFOLD PSI= 1500 ce -ACCUMULATOR PSI AFTER FUNCTIONING f� BOPE=1750-PSI V ✓ -RECOVERY TO FULL SYSTEM PRESSURE= /6 108 SECONDS. It -6 NITROGEN BOTTLES AVERAGE PRESSURE=2100-PSI BOP CLOSING TIMES: -ANNULAR PREVENTER=23-SECONDS -UPPER PIPE RAMS=18-SECONDS -LOWER PIPE RAMS=18-SECONDS -BLIND/SHEAR RAMS=22-SECONDS -HCR KILL VALVE=3-SECONDS -HCR CHOKE=3-SECONDS. REFERENCED DDI BOP TESTING SOP FOR ALL TESTING. BOPE TEST WITNESSED BY AOGCC-JEFF JONES at 16:00 HRS ON 11/11/2012,DOYON TOOLPUSHER-SAM DYE, AND BP WSL-DAVE NEWLON. 15:30 - 16:00 0.50 BOPSUR P PROD1 R/D TEST EQUIPMENT, RE-ALIGN TOP DRIVE, KILL&CHOKE LINES 16:00 - 16:30 0.50 DRILL N DPRB PROD1 P/U IMPULSE&BREAK STABILIZER OFF,L/D TO UPLOAD MWD. 16:30 - 17:00 0.50 WHSUR P PROD1 INSTALL WEAR BUSHING Printed 12/7/2012 11:21:38AM North America -ALASKA- BP Page 31 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 I End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12.00:00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task I Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:00 - 19:00 2.00 DRILL N DPRB PROD1 P/U BHA#10 -P/U 1.5 DEG MOTOR 19:00 - 20:30 1.50 DRILL N DPRB PROD1 RIH W/4"DP F/ 299'MD 1,249'MD -MONITOR DISPLACEMENT VIA PIT#3 20:30 - 21:00 0.50 DRILL N DPRB PROD1 PERFORM SHALLOW PULSE MWD TEST -250 GPM,670 PSI -SUCCESSFUL TEST -BLOW DOWN TOP DRIVE 21:00 - 00:00 3.00 DRILL N DPRB PROD1 RIH W/4"x 5"TAPERED DRILL STRING F/ 1,249'MD T/5,048'MD -MONITOR DISPLACEMENT VIA PIT#3 -FILL DP EVERY 2,000'MD TOTAL DAILY MUD LOSS=115 BBLS 11/14/2012 00:00 - 01:00 1.00 DRILL N DPRB PROD1 RIH F/5,048'MD T/6,090'MD. ESTABLISH CIRC PARAMETERS EVERY 2,000' 01:00 - 01:30 0.50 DRILL P PROD1 SERVICE TOP DRIVE 01:30 - 02:30 1.00 DRILL N RREP PROD1 WHILE TIH,A 2"x 1"NUT DESCENDED 20'-23' F/THE TOP DRIVE AND CAME TO REST AT RIG FLOOR -SHUT DOWN,FILL UP HOLE -MAINTAIN HOLE FILL INSPECT TOP DRIVE -SEE COMMENTS SECTION REPAIR TOP DRIVE -CIO AND SECURE NEW FITTING -INSPECT TOP DRIVE 02:30 - 08:00 5.50 DRILL N DPRB PROD1 RIH F/6,090'MD 13,202'MD -MONITOR DISPLACEMENT VIA PIT#2 -LOSS RATE= 12 BPH 08:00 - 12:00 4.00 DRILL N DPRB PROD1 WASH DOWN F/13,202'MD T/15,476'MD -5 BPM,1250 PSI -45 RPM -10K TRQ, P/U=256K, S/O= 167K -LOSS RATE=60-80 BPH 12:00 - 15:00 3.00 DRILL N DPRB PROD1 WASH&REAM WHILE MAD PASS F/15,476' MD T/15,607'MD -LOSS RATE=60-80 BPH 15:00 - 21:30 6.50 DRILL P PROD1 DRILL 6-1/8"PRODUCTION HOLE F/15,607'MD TO TD AT 15,766'(9,001'ND) -230 GPM,1600 PSI ON/1425 PSI OFF -45 RPM,TQ=13K ON/11-12K OFF -WOB=6K -MW=8.8PPG IN/8.8 PPG OUT -P/U=278K,S/0=180K,ROT=220K AST=2.13 HRS,ART=.63,ADT=2.76 HRS TOTAL BIT HRS=2.76,TOTAL JAR HRS=34.1 SPR'S: 15,764'MD(9,000'ND)-TIME=21:30, MW=8.8PPG #1 MP-20/30 SPM=500/640 PSI #2 MP-20/30 SPM=500/650 PSI LOSS RATE=50-60 BPH Printed 12/7/2012 11.21:38AM North America-ALASKA- BP 41111 Page 32 of 33 Operation Summary Report Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12:00:OOAM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From -To Hrs Task ' Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:30 - 23.00 1 50 DRILL P PROD1 CIRCULATE 4X OH VOLUME -ROTATE/RECIPROCATE -250 GPM,1460 PSI -60 RPM,13K TO -P/U=278K, ROT=220K -LOSS RATE=35 BPH 23:00 - 00:00 1.00 DRILL P PROD1 MAD PASS F,15,766'MD T/15,572'MD 250 GPM,1430 PSI -100 RPM,15K TQ LOSS RATE=60 BPH 11/15/2012 00:00 - 12:00 12.00 DRILL P PROD1 CONT TO MAD PASS 6-1/8"PRODUCTION HOLE SECTION F/15,572'MD T/12,635'MD -250 GPM,1300 PSI -DYNAMIC LOSS RATE=60 BPH -STATIC LOSS RATE=14 BPH 12:00 - 14:00 2.00 DRILL P PROD1 RIH F/12,446'MD T/15,288'MD. -MONITOR DISPLACEMENT VIA PIT#2 14:00 - 15:00 1.00 DRILL P PROD1 WASH DOWN F/15,288'MD T/15,766'MD -3 BPM,650 PSI 15:00 - 15:30 0.50 DRILL P PROD1 DRILL 6-1/8"PRODUCTION HOLE F/15.766'MD TO 15.778'(9,009'TVD) -250 GPM,1680 PSI ON/1370 PSI OFF • -40 RPM,TQ= 13K —WOB=8K -MW=8.8PPG IN/8.8 PPG OUT CO -P/U=240K, S/O= 178K, ROT=224K AST=0 HRS,ART=21,ADT= 21 HRS TOTAL BIT HRS=2.97,TOTAL JAR HRS=34.3 LOSS RATE=80 BPH 15:30 - 19:30 4.00 DRILL - P PROD1 PUMP 100 BBLS,40 PPB LCM PILL -90 GPM,1160 PSI -40RPM,11KTQ -MONITOR WELL FOR 10 MIN -LOSS RATE AFTER PILL=45 BPH SPR'S: 15,778'MD(9,008'TVD)-TIME=19:30, MW=8.8 PPG #1 MP-20/30 SPM=440/560 PSI #2 MP-20/30 SPM=440/560 PSI 19:30 - 21:30 2.00 DRILL P PROD1 CIRCULATE HOLE CLEAN -FLOW CHECK,10 MIN-WELL STATIC -MW IN/OUT-8.7 PPG -STATIC LOSS RATE-12 BPH 21:30 - 00:00 2.50 DRILL P PROD1 PUMP OUT OF HOLE F/15,778'MD T/14,180' • MD -2 BPM,422 PSI,50 FT/MIN -MONITOR WELL ON ACTIVE SYSTEM -LOSS RATE=60 BPH 11/16/2012 00:00 - 01:30 1.50 DRILL P PROD1 CONT TO PUMP OUT F/14,180'MD T/12,730' MD -90 GPM,400 PSI Printed 12/7/2012 11:21:38AM North America-ALASKA- BP • Page 33 of 33 1 O•eration Summary Re•ort Common Well Name:Z-10 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 10/10/2012 End Date: 11/16/2012 X3-012ND-C:DRILL(5,836,451.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 01:30 - 03:00 1.50 DRILL P PROD1 DROP 1.76"WELL COMMANDER ACTIVATION BALL -90 GPM,450 PSI -BALL ON SEAT AT 5.2 BBLS -PRESSURED UP TO 2,100 PSI,OPEN WELL COMMANDER -CONFIRM ACTIVATION -251 GPM,350 PSI _ -LOSS RATE=70 BPH 03:00 - 04:30 1.50 DRILL P PROD1 CIRCULATE 1X BOTTOMS UP -RECIPROCATING F/12,730'MD T/12,630'MD -425 GPM,630 PSI -LOSS RATE=60 BPH POOH&CIRC BOTTOMS UP RECIP F/ 12,630'MD T/12,540'MD -425 GPM,630 PSI -LOSS RATE=70 BPH 04:30 - 06:00 1.50 DRILL P PROD1 POOH F/12,540'MD T/9,698'MD. -MONITOR WELL FOR 10 MIN -MONITOR DISPLACEMENT VIA TRIP TANK -14 BBLS LOSS 06:00 - 09:00 3.00 DRILL P PROD1 CIRCULATE WHILE RECIP F/9,698'MD T/ 9,603'MD -425 GPM,600 PSI -TOTAL BBLS PUMPED=1,528 BBLS 09:00 - 09:30 0.50 DRILL P PROD1 MONITOR WELL. -STATIC LOSS RATE=12 BPH -PUMP 20 BBL 10.8#SLUG 09:30 - 15:30 6.00 DRILL P PROD1 POOH ON ELEVATORS F/9,603' -UD DP F/3,813'MD T/2,959'MD -MONITOR DISP VIA TRIP TANK -MONITOR WELL WELL FOR 10 MIN BEFORE PULLING BHA THROUGH STACK ✓ 15:30 - 19:00 3.50 DRILL P PROD1 LD MOTOR BHA#10 PER SLB DD REMOVE SOURCE -CLEAN AND CLEAR RIG FLOOR -BIT GRADE:0-0-NO-A-X-I-NO-TD Printed 12/7/2012 11:21:38AM North America ALASKA BP,% Page 1 of 4 operation Summary Report Common Well Name:Z-10 AFE No Event Type:COM-ONSHORE(CON) Start Date: 11/16/2012 End Date: 11/21/2012 X3-012ND-C:DRILL(3,398,993 00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 • Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/16/2012 19:00 - 21:30 2.50 CASING P RUNPRD RI]TO RUN 4-1/2"13CR-85, 12.6#, PRODUCTION LINER -LOSS RATE: 12 BPH 21:30 - 23:00 1.50 CASING N HMAN RUNPRD TONGS INCORRECTLY MADE UP FOR 4-1/2" -ROLLERS FOR BACKUPS WERE INCORRECT SIZE -WAIT ON CORRECTLY CONFIGURED TONGS 23:00 - 00:00 1.00 CASING P RUNPRD CONT RIH W/4-1/2"13CR-85, 12.6#, PRODUCTION LINER T/159'MD' -VERIFY FLOAT FUNCTION(GOOD) -LOSS RATE:20-25 BPH 11/17/2012 00:00 - 08:00 8.00 CASING P RUNPRD RIH W/-4-1/2"13CR-85,12.6#, PRODUCTION LINER F/84'MD'T/3,419'MD LOSS RATE:25 BPH 08:00 - 09:00 1.00 CASING P RUNPRD M/U HANGER/PACKER ASSEMBLY AS PER BOT REP. M/U SHEAR JOINT. CIRC LINER VOLUME. L/D SHEAR JOINT. -4 BPM,300 PSI 09:00 - 12:00 3.00 CASING P RUNPRD RIH W/DP F/3,419'MD T/7,219'MD. MONITOR DISP VIA PIT 2 -FILL PIPE EVERY 10 STNDS 12:00 - 16:30 4.50 CASING P RUNPRD RIH W/5"DP F/7,219'MD T/12,500'MD. MONITOR DISP VIA PIT 2 FILL PIPE EVERY 10 STNDS 16:30 - 17:00 0.50 CASING P RUNPRD CIRC 1.5X LINER VOLUME AT SHOE -64 GPM,270 PSI 17:00 - 20:30 3.50 CASING P RUNPRD RIH F/12,500'MD T/15,778'MD. MONITOR DISP VIA PIT 2. P/U SINGLE&15'PUP, TAGGED BOTTOM. UD SINGLE&PUP. -FILL PIPE EVERY 10 STNDS 20:30 - 21:30 1.00 CASING P RUNPRD .PROPPED 0 90"BALL AS PER BAKER REP -PUMP AT 2 BPM,460 PSI -760 TOTAL STRKS -PUMP AT 1.5-2 BPM,280-460 PSI -BALL SEATED,PRESSURED UP TO 2800 PSI -SLACK OFF TO ENSURE LINER IS HUNG OFF 21:30 - 22:30 1.00 CASING P RUNPRD SET LINER HANGER AND ZXP LINER TOP PACKER AS PER BAKER REP -SET AT 15,572'MD -LD SINGLE JOINT PU WT=295K,SO WT=150K 22:30 - 23:00 0.50 CASING P RUNPRD RU TO PRESSURE TEST LINER TOP PACKER CLOSE ANNULAR PREVENTER,PUMP DOWN THE BACK SIDE -250 PSI LOW FOR 5 MIN,3500 PSI HIGH FOR 30 MIN,CHARTED PER DWOP AK CRT 10-45 -3,500 PSI TEST -LOST 13 PSI IN FIRST 15-MIN -GAINED 8 PSI IN SECOND 15-MIN -LOST 5 PSI OVER 30-MIN TEST Printed 12/7/2012 11:21.52AM North America -ALASKA- BP Operation Summary Report Common Well Name:Z-10 AFE No Event Type: COM-ONSHORE(CON) Start Date: 11/16/2012 End Date: 11/21/2012 X3-012ND-C:DRILL(3,398,993.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12.00.00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To His Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 00.00 1.00 CASING P RUNPRD PULL RS PACK OFF OUT OF PBR AND PRESSURE UP RD TEST EQUIPMENT, BLOW DOWN KILL LINE -PREP FOR DISPLACEMENT TO 8.7 PPG KCL BRINE -CIRCULATE 1/2 BPM,38 PSI -CLEAN OUT -LOSS RATE:60 BPH 11/18/2012 00:00 - 03:30 3.50 CASING P RUNPRD CLEAN AND CLEAR RIG FLOOR -FLUSH SURFACE EQUIPMENT -PREP FOR DISPLACEMENT TO 8.7 PPG BRINE 03:30 - 07:00 3.50 CASING P RUNPRD DISPLACE WELL TO 8.7 PPG BRINE(NACL) -PUMP HIGH VIS SPACER -START DISPLACEMENT -8 BPM,610 PSI -TOTAL VOLUME PUMPED=866 BBLS PUMPED PU WT=215K,SO WT=160K 07:00 - 08:00 1.00 CASING _P RUNPRD FLUSH ALL SURFACE EQUIPMENT. -MONITOR WELL FOR 10 MIN -8.7 PPG BRINE IN/8.7 PPG BRINE OUT -STATIC LOSS RATE=30 PBH 08:00 - 12:00 4.00 CASING P RUNPRD POOH UD 5"DP F/12,360'MD T/9,485'MD.30 BPH LOSSES 12:00 - 15:00 3.00 CASING P RUNPRD POOH LID 5"DP IN SINGLES F/9,485MDT/ 7,000'MD -MONITOR WELL VIA TRIP TANK 15:00 - 18:00 3.00 CASING P RUNPRD SLIP&CUT 175'DRILL LINE -GREASE TOP DRIVE&CROWN. 18:00 - 00:00 6.00 CASING P RUNPRD POOH UD 5"DP IN DOUBLES F/7,000'MD T/ 1,234'MD 11/19/2012 00:00 - 01:00 1.00 CASING P RUNPRD POOH W/LINER RUNNING TOOL F/1,234'MD -MONITOR DISPLACEMENT VIA TRIP TANK -LOSS RATE:30 BPH 01:00 - 02:00 1.00 CASING P RUNPRD LD LINER RUNNING TOOL PER BAKER BOT REP -CLEAN AND CLEAR RIG FLOOR -LINE UP AND FILL HOLE -MONITOR FLUID LEVEL -LOSS RATE:40 BPH 02:00 - 04:30 2.50 RUNCOM P RUNCMP RU TO RUN 4-1/2",12.6#,13CR-85,VAMT01? COMPLETION. MAKE DUMMY RUN WITH TUBING HANGER PER FMC REP -PJSM WITH DDI,DOYON CASING,HES,BP 04:30 - 12:00 7.50 RUNCOM P RUNCMP 141H W/4-1/2", 12.6#. 13CR-85,VAMTOP COMPLETION T/4,902'MD. -MONITOR DISP VIA PIT#2 -LOSS RATE:35 BPH 12:00 - 23:30 11.50 RUNCOM P RUNCMP RIH W/4-1/2",12.6#,13CR-85,VAMTOP COMPLETION F/4,902'MD T/12,341"4-1/2" LINER TOP -UP VVT 175K,DN VVT 111K 23:30 - 00:00 0.50 RUNCOM P RUNCMP R/U TO REVERSE CIRC Printed 12/7/2012 11:21:52AM North America -ALASKA- BP Page 3 of 4 Operation Summary Report ) auz ��-.'. ;, Common Well Name:Z-10 AFE No Event Type: COM-ONSHORE(CON) Start Date: 11/16/2012 End Date: 11/21/2012 X3-012ND-C:DRILL(3,398,993.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI. Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs I Task Code I NPT NPT Depth Phase Description of Operations (hr) (ft) 11/20/2012 00:00 - 08:30 8.50 RUNCOM P RUNCMP REVERSE CIRCULATE CORROSION INHIBITED,120°F,9.4 PPG NACL BRINE DOWN IA, RETURN UP TBG -4 BPM,280 PSI, LOSS RATE=84 BPH -DECREASE PUMP RATE -2 BPM,50 PSI,LOSS RATE=30 BPH 08:30 - 10:30 2.00 RUNCOM P RUNCMP R/U AND PUMP DOWN TUBING TO CLEAN -RHC-M BALL SEAT PROFILE PUMP 5 BBLS 9.4 PPG BRINE 10:30 - 11:00 0.50 RUNCOM P RUNCMP DROP 1-5/16"BALL&ROD 11:00 - 11:30 0.50 RUNCOM P RUNCMP. PRESSURE UP TUBING,SET PACKER AND TEST -250/3500 PSI FOR 5/30MIN CHARTED TEST,GOOD TEST -BLEED TUBING TO 1500 PSI AND HOLD. PRESSURE UP IA AND TEST 250/3500 PSI FOR 5/30 MIN CHARTED TEST,GOOD TEST -WTL APPROVAL TO PROCEED JOHN RALL IN FOR SCHULTZ 11:30 - 12:00 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,270 PSI PUMP DOWN TUBING -20 SPM,270 PSI CONFIRMATION THAT SHEAR VALVE IS OPEN 12:00 - 12:30 0.50 RUNCOM P RUNCMP P/U T-BAR&DRY ROD IN TWC,BY FMC REP 12:30 - 14:30 2.00 RUNCOM P RUNCMP 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 -ALL TESTS CHARTED 14:30 - 18:00 3.50 WHSUR P RUNCMP N/D BOP&SPACER SPOOL. -REMOVE STRIP-O-MATIC&INSPECT -JET&R/D FLOWLINE -REMOVE BOLTS&PULL 14'RISER -PULL DSA OFF WELLHEAD BARRIERS IN PLACE PRIOR TO ND,TESTED TWC FROM BELOW,KW FLUID ON TOP OF BALL AND ROD IN RHC PROFILE TESTED PRODUCTION PACKER,KWF, CASING ANNULUS VALVE 18:00 - 19:00 1.00 WHSUR P RUNCMP N/U 4-1/16"FMC PRODUCTION TREE& ADAPTER FLANGE 19:00 - 21:00 2.00 WHSUR P RUNCMP TEST ADAPTER FLANGE -250 PSI LOW 5 MIN -5000 PSI HIGH 10 MIN(FMC REQUIRES) -GOOD TEST PRESSURE TEST TREE -250 PSI LOW 5 MIN -5000 PSI HIGH 5 MIN -GOOD TEST-LOST LESS THAN 50 PSI OVER 5 MIN TEST(CHARTED) Printed 12/7/2012 11.21.52AM North America -ALASKA- BP Page 4 of 4 Operation Summary Report Common Well Name:Z-10 AFE No Event Type:COM-ONSHORE(CON) Start Date: 11/16/2012 End Date: 11/21/2012 `X3-012ND-C:DRILL(3,398,993.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 25 Spud Date/Time: 11/7/1989 12:00:00AM Rig Release: 11/21/2012 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-10A Actual @94.81ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 22:30 1.50 WHSUR P RUNCMP R/U DRILL SITE MAINTENANCE LUBRICATOR. TEST LUBRICATOR TO 250/3500 PSI FOR 5/5 MIN TEST-GOOD TEST PULL TWC W/LUBRICATOR. -SET BACK LUBRICATOR. 22:30 - 00:00 1.50 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 MINS EACH(GOOD TEST) -REVERSE CIRC 52 BBLS OF 80°DIESEL AT 1.5 BPM AT 124 PSI 11/21/2012 00:00 - 05:00 5.00 WHSUR P RUNCMP DIESEL FREEZE PROTECT TO 2,200'ND R/U AND TEST CIRC LINES TO 250 LOW/ 3500 PSI HI FOR 5/5 MINS EACH(GOOD TEST) ALLOW DIESEL TO U-TUBE TOTAL PUMPED 156 BBLS -_R/D TUBING CIRC LINES REMOVE KELLY HOSE, BRIDLE UP, R/D MUD PUMP LINES 05:00 - 07:30 2.50 WHSUR P RUNCMP SCOPE DERRICK DOWN. 07:30 - 12:00 4.50 WHSUR P RUNCMP R/U DRILL SITE MAINTENANCE LUBRICATOR. TEST LUBRICATOR TO 250/3500 PSI FOR 5/5 MIN TEST --GOOD TEST SET BPV.R/D LUBRICATOR.TEST BPV FROM • BELOW FOR 250/3500 PSI FOR 5/30 CHARTED MINS.GOOD TEST. -BLEED DOWN LINES PREP FOR RIG MOVE TO Y-19 SITP=0, IA=0,OA=0 OPERATIONAL RIG RELEASE AT 12:00 12:00 - 00:00 12.00 WHSUR 'P RUNCMP SECURE WELL.PREP RIG FOR RIG DOWN -INSTALL FLANGES WITH NEEDLE VALVE W/ GAUGES ON BOTH ANNULI -R/D CIRC HOSES IN CELLAR STAGE MODULES IN MOVE ORDER FOR MOVE TO Y-PAD • Printed 12/7/2012 11:21:52AM O A 2 0 0 n ti 01 m D m*m'n n A W H O A o 0 0 0 4'1Z' O m 0 m 2 ,t v m 3 mmm^ °,o,�m m =n ama ,a***,,. co m > D� o O m TE c,r% xOmpz - m o w c. 2 omZo. o a 0 T O C)+ m A m X<� n A m 0 O 5y�;yyyv;��; t� r}�� D N ^t O w wwrgWw SVOwww�'W w www wtg. gg f4g HgW wwg88 8888888 wwo uO m 3 m 000000 00000 00000 00000 00000 00000 00000 00200 E W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W m W 0 O fop O Z Z Z A Z N m N N N U m Z g28820'.1 pAtm8NWm D O N OD O D .m< +to+V 3 N 09 3 -D m to N• ° m A 42+2t m W IAOtAOIAp +NO V N t8 W W 8 22(000 tp W 88:t., —00 00000 + V V N app N . p8p W O C O W W O m pmp N N W 8 V 8 O W O W N tAll N O V W N N W N W O N V 8 O N 8 V W 0 0 0 .m N m O D_O m m N tip N , • N N V A_ mm 0 mpp8§pSO8g8 888 ppV88888WNN +N+V WAA 3 p+Vf ( AV tW NNOAp +Ommo00 1 ( 2 +O mVVOW UW+mm 8mVmWVO mNmVm+ AWWmm N28114 931E89 AW00o i 00A C 221 C m 0.0 T • .... + mN. 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P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU Z-10A BP Exploration (Alaska), Inc. Permit No: 212-138 Surface Location: 972' FNL, 1182' FWL, SEC. 19, T11N, R12E, UM Bottomhole Location: 4466' FSL, 3404' FEL, SEC. 14, T11N, R 11 E, UM Dear Mr. Allen: Enclosed is the approved application for permit to re-drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the 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, Cathy P. Foerster Chair DATED this day of September, 2012. cc: Department of Fish & Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA RECEIVED ALAS )IL AND GAS CONSERVATION COMMi JN SEP 0 6 2012 PERMIT TO DRILL 20 AAC 25.005 AUG CC 1 a.Type of work: 1 b.Proposed Well Class: ®Development Oil• 0 Service-Winl ®Single Zone • 1 c. Specify if well is proposed for: ❑Drill 0 Redrill - 0 Stratigraphic Test ❑Development Gas 0 Service-Supply 0 Multiple Zone 0 Coalbed Gas 0 Gas Hydrates ❑Re-Entry 0 Exploratory 0 Service-WAG ❑Service-Disp 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 Z-10A - 3. Address. 6. Proposed Depth. 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 15824' • TVD 9068' . Prudhoe Bay/Prudhoe Bay . 4a Location of Well(Governmental Section): 7. Property Designation(Lease Number): Surface: ADL 028262&028245 ' '972'FNL, 1182'FWL, Sec. 19,T11N, R12E, UM Top of Productive Horizon: 8. Land Use Permit 13. Approximate Spud Date: 3438' FSL,628' FEL, Sec. 14,T11N, R11 E, UM October 24,2012 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 4466'FSL, 3404' FEL, Sec. 14.T11N, R11 E, UM 2560 3500' 4b. Location of Well(State Base Plane Coordinates-NAD 27). 10.KB Elevation above MSL: 91.78' feet 15.Distance to Nearest Well Open Surface. x- 598906 ' y-5959100• Zone- ASP4 GL Elevation above MSL: 53.98' feet to Same Pool. 16 Deviated Wells. Kickoff Depth 9600' feet • 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle. 101 degrees` Downhole. 3919 ' Surface: 3017 ' 18. Casing Program: Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling Length MD TVD MD ND (including stage data) 8-1/2" 7" 26# L-80 VamTop 3080' 9450' 6339' 12530' 8669' 278 sx LiteCrete, 170 sx Class'G' 6-1/8" 4-1/2" 12-.6# 13Cr85 VamTop 3435' 12380' 8549' 15815' 9062' 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 ND(ft): Junk(measured): 13990' 9180' None 13905' 9128' None Casing Length Size Cement Volume MD ND Conductor/Structural 110' 20" 110' 110' Surface 3176' 13-3/8" 4395 cu ft Permafrost 3176' 2677' Intermediate 13101' 9-5/8" 2878 cu ft Class'G' 13101' 8609' Production _ Liner 1147' 5-1/2" 489 cu ft Class'G' 12843'- 13990' 8448'-9180' Perforation Depth MD(ft)• 13400'- 13650' Perforation Depth ND(ft): 8806'-8968' 20.Attachments: 0 Property Plat ®BOP Sketch ®Drilling Program ❑Time vs Depth Plot 0 Shallow Hazard Analysis 0 Diverter Sketch 0 Seabed Report ®Drilling Fluid Program 0 20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Trevor Hyatt, 564-4627 Printed Name Ken Allen Title Engineering Team Leader Prepared By Name/Number Signature, ./ Phone 564-4366 Date 7/<//'Z Joe Lastufka,564-4091 Commission Use Only Permit To Drill API Number Permit Appr v I Date See cover letter for Number. 2/Z`5 50-029-21986-01-00 tiN \R``/ other requirements Conditions of Approval: If box is checked,well may not be used to explore for,test,or produce coalbed met ane,gas hydrates,or gas contained shales Other: 35-60 ,p5 1 BOP tcsf- Samples Req'd: Oyes "No Mud Log Req'd. ❑Yes 'No H25 Measures: 9'Yes 0 No Directional Survey Req'd: dYes 0 No //�� / APPROVED BY THE COMMISSION Date ( '/C/ 1 i, 9i)Ly f}�fi� ,COMMISSIONER Form 10-401 Revised 07/2009 This permit is valid for 24 months from the date of approv7/(20 AAC 25.005(g)) Duplicate �. ,/i4-i1 � ORG1NALIJ4.. �c� c Z-1 OA Permit Application Well Type: Producer Current Status: The well is currently shut-in. Request: Approval is requested for the P&A of Prudhoe Bay well Z-10 to sidetrack and complete Z-10A. Reason for Sidetrack: Produce Ivishak reservoir Zone 4, 46-42P. Well History: Z-10 is an Ivishak producer with original completion in 1989. The well was frac'd in June 1990, targeting Zone 42P and 43P (the well screened out early). Had acid stimulations 1990, 1995, 1998, and 2010 to increase production. The original 3-1/2" Tubing was replaced with 4-1/2" 13Cr Tubing by RWO in 1991. Ad-perfs were shot in 1994, 2004, 2008, and 2009. This well became a sidetrack candidate in 1999 due to liner problems. Currently the well is low PI, low oil rate and not competitive. No viable wellwork options remain. Well has been shut in since 09/2010 (was online for 2 weeks in 2011). Cemented 13-3/8" surface casing (17-1/2" hole size) with 783 bbls of Permaforst cement to surface. No LOT recorded. Cemented 9-5/8" casing (12-1/4" hole size) with 512 bbls Class G cement. No problems with cement job reported. With 30% washout, cement top calculated to be at 6031' MD. No LOT recorded. Cemented 5-1/2" liner with 101 bbls of 16.0 ppg Class G cement to liner top. No problems with cement job reported. CBL log run on 5-1/2" liner shows fair to good cement throughout liner. Scope of Work: The sidetrack plan for the Z-10 well includes the following: pre-rig operations will include laying cement across the perforations, circulating a 1200' MD cement plug into the IA and tubing above the production packer by means of a GLM and cutting the 4-1/2" tubing at approximately 9800'. Pull tubing, and run a clean out run. A whipstock will be set to exit the 9-5/8" casing at —9600' MD. An 8-1/2" hole will be drilled to the top of the Sag River where a 7" drilling liner will be run and cemented. A 6-1/8" production hole will be drilled in the Ivishak. Run sliding sleeves and swell packer production liner assembly with liner top packer. Run 4.5" tubing tied into top of production liner top. MASP: 3017 psi Estimated Start Date: October 24th, 2012 Z-10A PTD Page 1 9/4/2012 Planned Well Summary WWell Z-10A Type Producer Objecet tive Ivishak Z-10 API Number: 50-029-21986-00 Current Status Shut-In Estimated Start Date: 10/24/2012 Time to Complete: 32 Days Surface Northing Easting Offsets TRS Location 5,959,100 . 598,906. 4307' FSL/ 3772' FEL • 11N 12E sec 19 Tie in Northing Easting TVDss Offsets TRS (Sidetrack 5'962,056 593,063 6345' 2058' FSL /4623' FEL 11N 11E sec 13 point) Northing Easting TVDss Offsets TRS Production 5,963,420 591,760 8555' 3438' FSL / 628' FEL 11N 11E sec 14 Tgt BHL 5,964,415 588,970 8973' 4466' FSL/ 3405' FEL 11N 11E sec 14' Planned KOP: 9600' MD/6347' TVDss Manned TD: 15,824' MD/8973' TVDss ' Rig: Doyon 25 BF-RT: 40.8' RTE (ref MSL): 94.8' Directional — Schlumberger P8 KOP: 9600' MD ' Maximum Hole Angle: —50° in the 8-1/2" intermediate section —101° in the 6-1/8" production section Close Approach Wells: All other wells pass Major Risk Analysis Survey Program: 9606' to 9950' MD = GYD-BM-MS 9950' to 15,824' MD = MWD+IIFR+MS Nearest Property Line: 3500' to nearest property line. Nearest Well within Pool: N/A Z-10A PTD Page 2 9/4/2012 Formation Tops & Pore Pressure Estimate (SOR) Estimated Depth Fluid Most Likely Formation Formation Top Uncertainty Type Pore Pressure (TVDss) (+/-TVD ft) (for sands) (EMW ppg) CM-2 5320" +/- 10 ft None/GOGCM 8.70 Top OP 5830 +1-30 ft None/GOGCM 9.10 CM-1 5870* +/- 10 ft None/GOGCM 9.50 TLBK 6185* +1-10 ft None/GOGCM 9.60 KOP 6345 +1-20 ft None/GOGCM 9.60 THRZ 6430 +/-20 ft None/GOGCM 10.00 TKLB 6570 +/-20 ft None/GOGCM 10.00 _ TKC4 6660 _ +/-20 ft Poss OiiNVtr 10.00 TKB/LCU 6740 +/-20 ft None/GOGCM 10.00 Fault#1 6770 None/GOGCM 10.00 TMLV( +1-20 ft None/GOGCM 10.00 faulted top) 6770 TKNG 7485 +/-20 ft None/GOGCM 10.00 TJG 7485 +/-20 ft None/GOGCM 10.00 TJF (possible +/-20 ft None/GOGCM 10.00 faulted top) 7760 Fault#2 7790 None/GOGCM 10.00 TJE _ 7860 +/-20 ft None/GOGCM 10.00 TJD 8070 +1-20 ft None/GOGCM 10.00 AA Q TJC 8320 +/-20 ft None/GOGCM 10.00 /r 41,r.C'`o` TJB 8425 +/-20 ft None/GOGCM 10.00 f /b-5 - /° 9 TJA 8480 +/-20 ft None/GOGCM 10.00 TSGR 8560 +1-20 ft Gas 8.52 TSHA 8590 +/-20 ft Gas 8.50 , _ TEIL 8705 +/-20 ft Gas 8.41 PGOC (OUT) 8714 +/-20 ft Gas 8.41 TSAD (46P) 8740 +/-20 ft Oil 8.34 45N 8770 +/-20 ft Oil 8.34 44N 8800 +/-20 ft Oil 8.34 43N 8830 +1-20 ft Oil 8.34 42N 8855 +/-20 ft Oil 8.34 42N-Invert 8840 +/-20 ft Oil 8.34 43N-Invert 8805 +/-20 ft Oil 8.34 44N-Invert 8770 +/-20 ft Oil 8.34 45N-Invert 8730 +/-20 ft Oil 8.34 45N-Revert 8740 +/-20 ft Oil 8.34 45N-Invert2 8770 +/-20 ft Oil 8.34 45N-Revert2 8790 +/-20 ft Oil 8.34 44N-Revert2 8830 +/-20 ft Oil 8.34 43N-Revert2 8860 +/-20 ft Oil 8.34 42N-Revert2 8885 +/-20 ft Wtr 8.34 41N-Revert2 8930 +/-20 ft Wtr 8.35 31N-Revert2 8970 +/-20 ft Wtr 8.35 TD 8973 +1-20 ft Wtr 8.35 Z-10A PTD Page 3 9/4/2012 Casing/Tubing Program Hole Liner/ Wt/Ft Grade Conn Length Top Bottom Size Tbg O.D. MD/TVDrkb MD/TVDrkb 8-1/2" 7" 26# L-80 VaHCop 3080' 9450' /6330' 12,530' /8664' 6-1/8" 4 '/2" 12.6# 1385R VamTop 3438' 12,380' /8525' 15,815' /9062' Tubing 4 '/2" 12.6# 1385R VamTop 12,380' Surface 12,380' /8525' Mud Program Intermediate Mud Properties: LSND 8-1/2" hole section Depth Interval Density (ppg, PV YP API FL HTHP FL MBT PH 9-5/8" CSG 10.5 - 10.8 12-22 20 -28 <6 NA <20 9-10 Window to TSGR Production Mud Properties: Reservoir Drill-In Fluid 6-1/8" hole section Depth Interval Density PV YP LSRV HTHP FL pH MBT (PPM 7" Csg Shoe to TD 8.6 - 8.9 'S 3-12 10-20 > 20,000 < 10 8.5-9.5 < 3 Logging Program 8-1/2" Intermediate: Sample Catchers-as required by Geology Drilling: Dir/GR/ Res/ Den / Neu (all real time) Open Hole: None Cased Hole: Contingency USIT in cement evaluation mode from top of 4-1/2" liner to top of 7" liner if drilling liner cement job does not go as planned. 6-1/8" Production: Sample Catchers-as required by Geology Drilling: Dir/GR/ Res/Neu I Den including LWD Azimuthal Density Caliper(all real time) Open Hole: None Cased Hole: None Cement Program Casing Size 7" 26#, L-80 VAM TOP HC, Intermediate Casing Lead: Annular volume from 1000' MD above 7" shoe to liner top packer with 40% excess and Basis: 200' excess above liner top packer Tail: 80' of shoe track + Annular volume from 7" shoe to 1000' MD above with 40% excess. Total Cement Spacer -35 bbls of Viscosified Spacer weighted to -11.0 ppg (Mud Push II) Volume: Lead 80 bbls, 450 cuft, 278 sks 12.0 lb/gal IiteCRETE- 1.62 cuft/sk Tail 35 bbls, 197 cuft, 170 sks 15.8 lb/gal Class G- 1.16 cuft/sk Temp BHST 220° F Z-10A PTD Page 4 9/4/2012 Casing Size 4.5" 12.6#, 13CR-85 VAM TOP, Production Liner Basis: NOT APPLICABLE, Isolation achieved with liner top packer and multiple swell packers placed in open hole for selective production capability. Surface and Anti-Collision Issues Surface Shut-in Wells: No surface shut-in wells are required. Close Approach Shut-in Wells: No subsurface shut-in wells are required. All wells pass Major Risk. Faults Formation Where MD TVDss Est. Throw Uncertainty Encounter Fault Intersect Intersect Throw Direction Fault#1 - Miluveach 10,215.0 6,770.0 110 ft. South +/- 100' MD Fault#2 - Kingak (TJF) 11,567.0 7,790.0 90 ft. North +/- 100' MD Fault#3 - Ivishak 14,830.0 8,790.0 20 ft. West +/- 100' MD 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. • 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) f/guidance. Well Control Well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind/shear rams, and annular preventer will be installed and are capable of handling the maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to 3500 psi. BOP regular test frequency will be 14 days during drilling phase and 7 days during sundry operations. Intermediate Interval Maximum anticipated BHP 3816 psi @ Sag at 8560' TVDss (8.52 ppg EMW) Maximum surface pressure 2955 psi (.10 psi/ft gas gradient to surface) - 130 bbls with 11.6 ppg frac gradient, assuming an 8.52 ppg pore pressure in the Sag River+ 0.5 ppg Kick intensity and 10.6 ppg. Kick tolerance - Infinite with 11.6 ppg frac gradient, assuming a 10.0 ppg pore pressure in the Kuparuk + 0.5 ppg Kick intensity and 10.6 ppg MW Planned BOP test pressure Rams test to 3500 psi/250 psi. Annular test to 3500 psi/250 psi 7" Casing 3500 psi surface pressure Integrity Test—8-1/2" hole LOT after drilling 20'-50' from middle of window 7" Casing The VBRs will be changed to 7" rams to accommodate the 7" casing string. Z-10A PTD Page 5 9/4/2012 Production Interval Maximum anticipated BHP 3919 psi @ Ivishak at 8973' TVDss (8.35 ppg EMW) • • Maximum surface pressure 3017 psi (.10 psi/ft gas gradient to surface) Kick tolerance - Infinite with 9.5 ppg frac gradient, assuming an 8.35 ppg pore pressure in the Ivishak + 0.5 ppg Kick intensity and 8.7 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 Planned completion fluids Seawater/6.8 ppg Diesel Pre-riq prep work: Pre Rig Work 1. S DMY all GLMs. 2. F MIT-IA(as SL assist). MIT-OA. 3. F Injectivity Test. 4. F Fullbore P&A(Cement Perfs)with 21 bbls of class G cement. Plan TOC at 12700' MD. 5. F MIT-T to test cement. 6. S D&T cement. Pull DGLV in Sta#2 (12315' MD). 7. F Fullbore P&A(Balanced Plug)with 83 bbls of class G cement. Plan TOC at 11100' MD. 8. S D&T cement. Drift for Jet Cut. 9. E Jet Cut TBG at 9800' MD. 10. F CMIT-TxIA. 11. V Set BPV(test from below). AllIllIllIllIll © Pull the ball and rod/ RHC plug from landing nipple below the production packer. Install 1 GLV design. 2 El Coil to function Sliding Sleeves 3 0 Install well house and instrumentation. 4 0 Negative pressure test on 7" Liner Top. Proposed Procedure: 1. MIRU Doyon 25. 2. Pull BPV. 3. Circulate out freeze protection and circulate well to Brine. Set a TWC and test from above to 3500 psi for 5 minutes and from below to 3500 psi for 5 minutes. 4. Nipple down tree. Nipple up and test BOPE to 3500psi.. Chart test. Initial BOPE rig up configuration from top to bottom: 7V-3 ti -lobre 24 AA 5 i h a cl ir- ki ce_ o Annular Preventer o 2-7/8" x 5-1/2"Variable Rams o Blind/shear Rams o Flow cross o 2-7/8" x 5-1/2"Variable Rams Z-10A PTD Page 6 9/6/2012 5. Pull TWC with lubricator. 6. RU and pull the 4-1/2" tubing from the pre-rig jet cut. 7. RIH with clean out assembly down to top of tubing stub. 8. RIH on E-line CCL log, set EZSV at -9640' MD and pressure test to 3500 psi for 30 min. Chart test. 9. PU 9-5/8" whipstock, bottom trip anchor and 8.5" window milling assembly (to include full gauge string mills). RIH to the top of the EZSV. Orient and set the whipstock. 10. Swap the well over to fresh water LSND milling fluid. P$A- 11. Mill a window in the 9-5/8" casing plus 20' of formation. 12. Perform a LOT. POOH for drilling BHA. 13. MU an 8-1/2" drilling BHA and RIH. Kick off and drill 8-1/2" intermediate interval to 7" casing point at the top of the Sag River. Circulate well clean and POOH. pTD 14. Change out upper 2-7/8" x 5-1/2" VBR to 7" CSG rams and pressure test to 3500 psi for 5 min. z-ipA- Chart test.. 15. Run and cement a 7", 26#, L-80 drilling liner in the 8-1/2" wellbore with a minimum of 150' overlap into the 9-5/8" casing. Set hanger/ liner top packer and displace cement with mud. POOH. 16. Change out upper 7" CSG rams to 2-7/8" x 5-1/2" VBR and pressure test to 3500 psi for 5 min. Chart test.. 17. MU a 6-1/8" drilling BHA. RIH to top of the float collar and test the casing to 3500 psi for 30 minutes. 18. Displace the well to reservoir drilling fluid. 19. Drill out shoe and 20' of new formation and perform a FIT. 20. Drill production section to TD. Trip for new bit as necessary. 21. Circulate well clean at TD. POOH to the shoe, MAD passing as required by geologist. Circulate the well clean at the shoe. RIH to TD, swap well to solids free OBM system and POOH on elevators. 22. Run 4-1/2", 12.6#, 13CR liner with swell packers and sliding sleeves, from TD to 150' inside the 7" shoe. Set the liner top packer and displace the well to seawater. 23. Run the 4-1/2", 12.6#, 13Cr completion tying into the 4-1/2" liner top. 24. Drop ball & rod and set the production packer and individually test the tubing to 3500 psi and annulus to 3500 psi for 30 minutes each. Chart tests. 25. Shear GLM valve and confirm circulation. 26. Set and test a TWC to 3500 psi above and below. 27. ND BOPE. NU and test the tree to 5,000 psi 28. Pull TWC. Freeze protect the well to 2,000' TVD. 29. Set a BPV and test to 3500 psi from below. 30. RDMO. Z-10A PTD Page 7 9/6/2012 Z-10A Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE I. Well Control / Reservoir Pressures: A. Intermediate Hole: Kupurak is expected to be a 10.0 ppg EMW (3512 psi). - Sag River is expected to be an 8.52 ppg EMW (3841 psi). B. Production Hole: Ivishak is expected to be at a 8.35 ppg EMW (3937 psi). - II. Lost Circulation/Breathing A. Intermediate Hole — One fault crossing is expected in the Miluveach at 10,215' MD. The second fault crossing is expected in the Kingak above the TJF at 11,567' MD, this fault is not expected to be associated with losses. B. Production Hole - Original Z-10 wellbore was frac'd in production zone (42P-42P), Z-10A will be drilled -500' MD away from frac zone in parent Z-10 well. C. Production Hole - One fault crossing is planned at 14,830' MD in the Ivishak. The well plan is designed to minimize contact with faults. However, the horizontal production section is drilled between two faults and has lost circulation risk due to close proximity to these faults. Ill. Faults Formation Where MD TVDss Est. Throw Uncertainty Encounter Fault Intersect Intersect Throw Direction Fault#1 - Miluveach 10,215.0 6,770.0 110 ft. South +/- 100' MD Fault#2 - Kingak (TJF) 11,567.0 7,790.0 90 ft. North +/- 100' MD Fault#3 - Ivishak 14,830.0 8,790.0 20 ft. West +/- 100' MD IV. Integrity Testing Test Point Test Depth Test type EMW(Ib/gal) 9-%" window 20'-50' from the 9-%' window LOT 11.6 ppg 7" shoe 20'-50' from the 7" shoe FIT 9.5 ppg minimum VI. Hydrogen Sulfide Z-Pad is considered an H2S site. Recent H2S data from the pad is as follows: Well Name H2S Level Date of Reading Parent Well (if sidetrack) Z-07A 20 3/17/2011 #1 Closest SHL Well H2S Level Z-06 10 4/27/2009 #2 Closest SHL Well H2S Level Z-08A 18 1/25/2010 #1 Closest BHL Well H2S Level Z-38 14 2/13/2012 #2 Closest BHL Well H2S Level Z-10 16 7/24/2010 #3 Closest BHL Well H2S Level Z-08A 18 1/25/2010 Other Relevant H2S Data V-117 - 7/26/10 - 140 ppm; V-102 - 7/10/12- 100 ppm (H2S alarms from rigs, etc.) VII. Anti-Collision Issues A. No Anti-Collision issues. All wells pass Major-Risk. CONSULT THE Z-PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION. Z-10A PTD Page 8 9/6/2012 TRS 4-1/16"CaWO SAF. .ROTES: ***CHROME TBG*** WELLHEAD= _ FMC Z.1 ACTUATOR= OTIS KB.ELEV= 91.78' BF.ELEV= 55.38' KOP= — 900' 2090' H4-1/2"OTIS SSSV NP,13=3.813" Max Angle= 59 @ 4943r 441 Datum MD= 13530' Datum ND=— 8800'SS GAS UFT MANDRELS 13-3/8"CSG,68#,L-80,13=12.415" —I 3176' ST MD TVD DEV TYPE VLV LATCH PORT GATE 6 3683 2988 54 MMGM DOME RK 16 02/05/10 5 8524 5750 51 MMGM DOME RK 16 02/05/10 Minimum ID =3.725" @ 12829' 1—. 4 10437 6978 51 MDOWGM DORK 16 02/05/10 4-1/2" PARKER SWN NIPPLE 3 11619 7737 53 MMGM DMY RK 0 08/14/07 2 12315 8144 55 Mt/GM DMY RK 0 01/00/00 1 12734 8383 54 MMGM SO RK 20 02/05/10 ' ' - 1 12762' H4-1/2"PARKER SWS NP,13=3.813" 12773' —9-518"X 4-1/2"BKR SAB-3 PKR,D=3.875" I ! 12807' H4-1/2"PARKER SWS NP,D=3.813" ' i 12829' H4-1/2"PARKER SWN NP,D=3.725" 4-1/2"TBG, 12.6#,13CR.0152 bpf,D=3.958" —1 12841' / 12841' _4-112"WLEG,D=3.99" LANDED IN LNR TOP OF 5 112"LNR —I 12843' HGR TIE-BACK SLAVE 12836' —I E-MD TT LOGGED 03/09/95 9-5/8"CSG,47#,L-80,D=8.681" —I 13100' 4 L PERFORATION SUMMARY ' REF LOG: CBT ON 12/07/89 ANGLE AT TOP PERF: 49"@ 13456' ' Note:Refer to Production DB for historical perf data SEE SPF NTERVAL Opn/Sqz C ATE ' 2-7/8" 6 13400-13415 0 01/11/09 2-7/8" 6 13456-13490 0 04/11/08 ' 2-7/8" 6 13456-13490 0 01/11/09 2-7/8" 6 13500-13508 0 04/11/08 13561' --+ BR JOINT 3-3/8" 6 13514-13544 0 07/03/94 ' 2-7/8" 6 13520-13540 0 01/10/09 2-7/8" 6 13554-13567 0 04/27/04 ' 2-7/8" 6 13554-13567 0 01/10/09 3-3/8" 4 13570-13584 0 04/04/95 ' 3-3/8" 4 13589-13650 0 04/01/95 PBTD — 13905' I 11111111 1111111111111111 5-1/2"LNR,17#,L-80,.0232 bpf,ID=4.892" -I 13990' 11WIi/i/i/A/�1�ii GATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY LINT 12/11/89 PARKER ORIGINAL COM PLEIION 05/30/09 BSBTLH PXN PLUG SET(05/11/09) WELL: Z-10 11/25/91 RWO 11/21/09 GJF/SV GLV C/O/PULL PXN(11/19/09) PERWiT No: 1891160 05/20/01 RN/KAK CORRECTIONS 03/20/10 SEW/SV GLV C/O(02/05/10) AR No: 50-029-21986-00 04/28/08 TFA/SV ADPBRFS(04/11/08) SEC 19,T11 N,R12E,972'FM_8 3771'F3_ 05/06/08 PJC PERF CORRECTIONS 01/15/09 RRK/SV ADPERF/REPBRF(01/11/09) BP Exploration(Alaska) TREE= 4-1/16"CNV WELLFEAp FMC Z—1 0 SAL. . NOTES: ***CHROME TBG*** ACTUATOR= OTIS KB.ELEV --91.78' Proposed P&A BF.BEV= 55.38' KOP= 900' Max Angle= 59 @ 4943' [ Datum MD= 13530' Datum TVD= 8800'SS 13-3/8"CSG,68#,L-80,ID=12.415" H 3176' 6031' —I CALCULATED TOP OF ANNULAR CEMENT Bottom of Schrader Reservoir(DPZ) 7100' - - (4810'TV Dss) , Kuparuk Reservoir(DPZ) 10,100' 10,200' I, 9800' H4-1/2"TBG CUT (6660'TVDss) TOP OF CEMENT PLUG —1 11,100' — GAS LFT MANDRELS ST MD TVD DEV TYPE VLV LATCH FORT DATE 4 10437 6978 51 MMGM DONE RK 16 02/05/10 I _-- 12,31-1 BOTTOM OF CEMENT PLUG 3 11619 7737 53 Mv1GM DMY RK 0 08/14/07 2 12315 8144 55 NT/GM DMY RK 0 01!00/00 I 1 12762' —14-1/2"PARKERSWS NP,ID=3.813" 1 112734 8383 54 NMGM SO RK 20 02/05110 p 12773' H9-5/8"X 4-112"BKR SAB-3 PKR,ID=3.875"l /\t f 12807' H4-1/2"PARKER SINS NP,13=3.813" 4-1/2'TBG, 12.6#,13CR,.0152 bpf,ID=3.958" —1 12841' I 12829' H4-1/2"PARKER SINN NP,13=3.725" ----____v_. 12841' J 4-1/2"WLEG,D=3.99' LANDED IN LNR TOP OF 5-1/2"LNR — 12843' i HGR TE-BACK SLEEVE 12,700' H TOP OF LINER CEMENT PLUG 9-5/8"CSG,47#,L-80,D=8.681"--I 13100' A , PERFORATION SUMMARY Top of Sag River Reservoir(DPZ) 13,126' �— REF LOG: CBT ON 12/07/89 (8534'TVDss) I I ANGLE AT TOP PERF: 49"@13456' ' Note:Refer to Production DB for historical perf data SIZE SPE INTERVAL Opn/Sqz DATE ' 2-7/8" 6 13400-13415 0 01/11/09 2-7/8" 6 13456-13490 0 04/11/08 ' 2-7/8" 6 13456-13490 O 01/11/09 2-7/8" 6 13500-13508 0 04/11/08 3-3/8" 6 13514-13544 0 07/03/94 I 2-7/8" 6 13520-13540 0 01/10/09 2-7/8" 6 13554-13567 O 04/27/04 I2-7/8" 6 13554-13567 0 01/10/09 3-3/8" 4 13570-13584 0 04/04/95 I3-3/8" 4 13589-13650 O 04/01/95 PBTD H 13827' "' 1", 5-1/2"LNR, 17#,L-80,.0232 bpf,ID=4.892" — 13990' '....A.A.Att DATE REV BY CONTENTS DATE REV BY COMTIEI rTS PRUDHOE BAY UNIT 12111/89 PARKER ORIGINAL COMPLETION 05/30/09 BSEITLH PXN PLUG SET(05/11/09) WELL: Z-10 11/25/91 RWO 11/21/09 GJF/SV GLV C/O/PULL PXN(11/19/09) FERMT No:'1891160 05/20/01 RN/KAK CORRECTIONS 03/20/10 SEW/SV GLV C/O(02/05/10) API Nb: 50-029-21986-00 04/28/08 TFA/SV ADPERFS(04/11/08) 08/28/12 TTH P&A FOR Z-10A SIDETRACK SEC 19,T11N,R12E,972'FNL&3771'FEL 05/06/08 PJC PERF CORRECTIONS 01/15/09 RRK/SV ADPBRF/REPERF(01/11/09) BP Exploration(Alaska) TFC= 4-1/16"CIW 1Ma LI{Ap FPC Z-I OA SAF. NOTES: ***CHROME TBG& LINER*** ACTUATOR= OTIS KB.ELEV= ___ 94.78' Proposed RST BF.9..EV= 53.98' KOP= — --666. Max Angle= 101°@ 13350' 2090' —14-1/2"HES X NP,ID=3-813" ----- - ---- Datum MD= 15820' -----.-_ __.�--_.--- GAS LIFT MANDRELS Datum ND= 8973'SS ST MD ND DEV TYPE VLV LATCH PORT DATE 13-3/8"CSG,68#,L-80,D=12.415" H 3176' 7 3876 3100 55 I?AGM RK 6 7435 5100 55 MMFGM RK 5 9467 6350 49 MMFGM RK 4 10228 6898 44355595 5 KGB RK 3 10932 7454 44 KGB RK 9-5/8"X 7"BKR LTP&HGR H 9450' 2456 11535 7918 35 KGB RK 1 12162 8398 35 KGB RK Whipstock hipstock(TOW=9600',BOW=9616') —{ 9600' µ t �y/� ' XX,XXX' H4-1/2"X NP,ID=3-813",13Cr Minimum ID =XXX" @ XXX' 11 = xx,XXX.]H7"x 4-1/2"FSS TNT PKR 13Cr XX,XXX' H4-1/2"X NP,ID=3.813",13 Cr _ I XX,XXX' —14-1/2"X NP,D=3-813", 13Cr r° A.i.: v 9-5/8"CSG 47#,L-80,D=8.681" — 13100' 12,380' _14-1/2"WLEG,12.6#,9Cr AI I 12,380' H7"X 5"ZXP BKR LTP&HGR Ar 12,530' —17"LNR,26#13Cr-85,VAMTOP HC ID=6.276" Z 10 , FES SWELL PACKER ASSF31 BLY NO SIZE TOP DEPTH MN D NO "XD"SLD SLV,ID=3.813" 12 4-1/2" 3958" Ia. NO# TOP DEPTH 0/C DATE 23 11 4-1/2" 3.958" ►. I tx 4-1/2" 10 C 4-1/7 9 C 10 4-1/2" 3.958" 9 4-1/2" 3.958" = 4-1/7 8 C 8 4-1/2" 3.958" _ 4-1/2" 7 C i I 4-1/7 6 C 7 4-1/2" 3-958" 23 4-1/2" 5 C 6 4-1/2" 3.958" _: El 4-1/2" 4 C 5 4-1/2" 3.958" On >1 4-1/2" 3 C 4 4-1/2" 3.958" II H 4-1/7 2 C 3 4-1/2" 3.958" i 1 4-1/7 1 C 2 4-1/2" 3.958" El 1 1 O=OPEN C=CLOSED 1 3 1/2" 2.992" ►. I I BKR LOCATOR SUB(SNS) —'i XX,XXX' 0 IZ XX,XXX' H 3-1/2" ANCHOR SWH-LPACKER,OD=5-3/4" 4-1/2"TBG, 12.6#,13CR-85,ID=3.958" —I 15,815' °••••••••••• • DATE REV BY COMMENTS DATE REV BY COA&ENTS PRUDHOE BAY INT 12/11/89 PARKER ORIGINAL COMPLETION WRL: Z-10A 08/27/12 TTH Z-10A PROPESED RST FER IT Nb: XXXXXXX AR Nb: 50-029-21986-00 SEC 19,T11 N,R12E,972'ENL&3771'FR. BP Exploration(Alaska) bp 0 Schlumberger Z-10A(P8)Proposal Geodetic Report (Del Plan) Report Date: August 29,2012-02:14 PM ,{r Survey/DLS Computation: Minimum Curvature/Ludnak: Client: Azimuth: 30a 714. True ZPAD/2.101 Alaska O� f �IS�:J T7113 VD RefereniceeDatuatl: 94.780 ft(oboe MSL Field: Prudhoe Bay Unit-W OA cl Venial Vertical Section Origin: 0.000 X,0.000 X Sirucbrei Slot: Z-PAD 0103 0 Well: 2-10 � Borehole: 2-10A �Q"'°o Seabed/Ground Elevation: 53.980 X 430.e MSL UWI/APM: Unknown/Unknown Magnetic Declination: 20.495° Survey Name: 2-10A(PB) Total Gravity Field Strength: 1002.8731 mon(9.8%SW) Survey Date: May 10,2012 Total Magnetic Field Strength: 57637.474 nT Tort/AHD 1 DDI/ERD Ratio: 311199./11551.88311/6.800/1.274 Magnetic Dip Angle: 80.990° Coordinate Reference System: NAD27 Alaska State Plane.Zone 00,US Feet Declination Date: Noember 15,2012 Location Let/Long: N 70°3T 513553W.W 149.11.56.55631' Magnetic Declination Model: BGGM 2011 Location Grid WE WIC N 5959100.070 XUS.E 598905.97011US North Reference: True North CRS Grid Convergence Angle: 0.7541° Grid Convergence Used: 0.0000° Grid Scala Factor: 0.98991111 Total Corr Meg NorlhoTrue North: 20.4847° Local Coord Referenced To: Wel Head Cowmen. MD Ind AIIm True TVDSS TVD VSEC NS EW TF DLS DireOtlOMl Northing Seating (n) (1 (1 (N) (X) (X) (n) (rI (1 (1100X) Difficulty Index (RUB) (SOS) Tie-In Survey 980300 48.82 302.% 634508 643986 653964 303297 -5804.80 77.52R N/A 6.00 5982056.12 59306229 Top Whipstock 9606.50 48.63 303.01 6347.38 6442.16 654228 303461 -5807.01 45R 0.66 8.00 5062057.52 593060.06 Base Whipstock 9622.50 50.20 304.78 835777 6452.55 655462 304120 -5817.11 HS 12.00 6.01 5062084.18 59304988 Cry N100 9642.50 50.20 304.76 6370.57 6465.35 8589.75 3049.96 -5829.73 116.42R 0.00 6.01 5962072.77 593037.14 9700.00 49.20 307.50 6007.77 650255 6613.40 3075.81 .5865.14 114.686 4.00 8.02 5962098.15 593001.40 9800.00 4764 312.42 6474.15 656893 6687.19 312379 -5922.17 111./0 4.00 6.04 5982145.37 592943.45 9900.00 46.29 317.57 6612.42 663720 675799 3175.42 -5974.15 107.886 4.00 6.06 5962196.31 592891.10 MB 993687 45.86 319.53 6568.00 6662.78 6783.27 319532 5981.73 108.528 4.00 8.07 5962215.97 592873.26 10000.00 45.19 322.94 6612.23 670701 682544 3230.43 8019.92 10/.139 4.00 8.08 5962250.70 59284460 End Cry 1005623 44.68 326.05 6652.04 674892 6861.78 3262.75 -604299 HS 4.00 6.09 5962282.72 592821.12 T1(04 1006601 4468 32605 6659.00 6753.78 6888.00 3268.45 4046.83 HS 0.00 609 5962288.37 59281720 01(6150 10191.18 4466 32605 6248.00 6842.78 694755 3341.48 4095.99 HS 0.00 610 596236072 59276709 TMLV 1027838 4468 32605 6810.00 6906.78 7002.97 3392.32 5130.24 HS 000 610 5962411.12 59273218 Gm 11100 1086556 44.68 32605 722749 732227 7376.15 3734.81 5360.84 141.131 0.00 8.12 5962750.51 592497.11 10900.00 43.62 32479 725220 734698 7397.95 3754.56 537445 140.231 4.00 8.13 596277008 592483.24 11000.00 40.61 32086 732639 7421.17 7460.01 380901 8414.89 137.311 4.00 8.15 596282299 592442.10 11100.00 37.75 316.43 740392 749870 7520.05 3855.45 5456.55 133.871. 4.00 8.16 5962869.87 592399,83 11200.00 35.08 311.41 748461 7579.19 7577.78 389665 5498.21 129.831 4.00 6.18 5962910.50 592356.63 End Cry 1120299 35.00 31125 748686 758164 7579.46 389778 5500.50 HS 4.00 6.18 5962911.61 592355.33 INNS 11204.39 3500 311.25 748800 758278 758025 3898.31 4501.10 HS 000 618 596291213 592354.72 ' TJF 1142901 35.00 311.25 7672.00 776678 7706.92 398326 459797 HS 0.00 619 596299579 592256.75 TJE 1182189 3500 31125 7630.00 7924.78 7815.68 4056.20 4681.15 HS 0.00 619 596306763 59217263 TJD 1189657 3500 31125 8055.00 8149.78 7970.57 4160.09 4799.60 HS 000 620 596316993 592052.83 TX 120764 35.00 311.25 831000 8404.78 814612 427781 593380 HS 000 626 596328587 59191707 TJB 1234025 3500 311.25 812500 8519.78 8225.28 4.33000 5994.38 HS 0.00 621 596333618 59185586 TJA 1242760 35.00 311.25 8402.00 8586.78 8270.03 436091 -7028.80 HS 0.00 6.21 59633677/ 59182123 T 12530.00 35.00 311.25 8573.98 8668.66 8327.77 4399.63 -707.76 HS 090 6.21 596340585 591776.57 026( 12531.37 3500 31125 657500 9669.78 8328.54 440.15 .707.35 HS 000 621 596340636 59177597 75HA 1256555 35.00 311.25 6603.00 969778 8347.82 441308 -7099.09 HS 000 621 596341909 59176106 Z-10A Tgt 1 12587.99 35.00 311.25 860500 869978 834920 441400 -7089.14 HS 0.00 6.21 5963420.00 59176000 CM 10/100 1258799 3500 311.25 8621.38 8716.16 8360.47 4421.57 -7097.77 HS 0.00 6.21 596342745 59175128 12600.00 3623 311.3 8631.15 8725.93 8367.35 4426.18 -7103.02 HS 10.25 6.22 596343199 59174596 TER 12001.20 45.58 311.25 8700.00 87996.78 842600 4485.51 -714788 HS 1025 6.25 59634707 591700.60 1270000 46.48 311.3 8706.11 8800.89 8432.22 4489.68 -715284 HS 10.25 625 596347483 59169578 %AD(480) 1275182 51.79 311.24 8740.00 8636.7 8470.74 4495.51 -718209 HS 1025 627 596350027 59166599 12800.00 56.73 311.24 8768.13 886291 8509.16 452128 -7211.49 HS 10.25 629 5963525.65 59163626 45N 12813.42 57.00 311.24 8770.00 886578 851200 452.17 .7213.65 HS 1025 629 596352751 591834.08 44N 1207.12 64.43 311.24 8805.00 8899.78 857146 4564.38 -78065 HS 1025 631 5963568.10 59158654 1290000 66.98 311.24 881524 891002 8595.75 4579.34 -7277.70 HS 1025 632 596358282 59156930 1300000 7723 31124 684592 8940.70 8689.19 4641.96 -7349.17 HS 10.25 6.35 5963644.52 59149702 1310050 87.48 311.21 885921 895399 878650 4707.23 -7423.60 HS 10.25 638 5963708.77 59142175 13210.00 97.73 311.21 885467 891945 8864.59 4772.99 -7498.62 HS 10.25 6.42 5963773.54 591345.87 Elul Civ 13234.16 10123 31123 8849.04 894382 891771 479520 -7523.96 45 10.25 643 5963795.41 59132025 CM 10/100 13355.32 10123 31123 8825.44 892022 903455 487353 -7813.32 176.350 0.00 6.44 5963872.55 591229.87 2-109Tat 13357.59 101.00 311.25 882500 891978 9038.75 487500 -761500 74.021 10.25 644 5963474.00 591228.17 Ertl Cry 13368.60 101.31 310.14 8822.87 8917.65 9017.38 488204 -7621.19 HS 10.25 644 5963180.93 591219.89 44N 1345933 101.31 310.14 9905.00 8899.7 913550 493966 .7691.50 HS 006 645 596393763 591150.83 45N 1363622 101.31 31014 8770.90 8864.7 930619 5052.499 .782529 HS 0.00 646 506404860 591015.59 Gni 10/100 137229 101.31 310.11 875351 884829 9389.52 510164 -7888.31 101.871- 0.00 6.47 596410100 59095187 TS110(4614) 13795.14 100.06 304.35 8740.00 883478 946061 514694 .794527 10291E 8.00 649 596414154 590594.35 1300000 99.97 303.97 8729.16 883394 946538 5151.63 -794923 103.011 8.00 6.49 5960146.18 590890.36 • 1390000 98-08 296.09 8723.45 881623 956455 520100 8034.67 101.241 8.00 6.51 5964194.41 590804.28 11000.00 96.00 28810 871113 880591 966211 5238.45 8126.48 10521 8.00 6.53 5964230.65 59071199 14100.00 9390 280.56 870245 879723 975766 5283.24 8222.64 105.881 600 6.56 5964251.17 590615.28 8' 14140.78 93.00 27742 8700.00 879478 979547 526080 .826109 LS 8.00 657 596426000 590575.00 Z-109 Tgt3 14200.00 88.26 277.42 6693.35 8791.13 9849.64 527725 8321.79 LS 8.00 6.58 5004266.87 59051621 TEL 1421578 8700 27742 870000 8794.78 9864.33 5279.28 8337.43 LS 600 6.58 596426670 59050055 EW Cm 14299.99 00.26 277.41 670933 8800.11 994114 5290.06 8420.37 HS 8.00 660 596427.40 590017.48 75.40(460) 1448732 8026 27711 8740.00 8834.78 10105.29 531114 859759 HS 000 661 5964299.13 59023999 45N 14859.71 8026 27711 877090 8864.78 1026587 5335.70 8770.97 HS 0.08 663 5964310/0 59006634 CrIW100 14715.98 8026 277.11 8779.68 8874.46 10317.70 534288 8826.94 0.039 0.00 663 5964325.95 59001029 14800.00 86.99 277.12 8719.01 8883.7 1039135 535376 8908.69 0.036 8.00 6.65 5964335.63 58992741 Z-1OATQI4 1483788 90.00 277.12 8790.00 8813478 15128.95 535862 8947.04 7896 8.00 666 596434000 589890.00 14900.00 9494 278.11 878732 8882.10 10186.26 536703 .9006.71 7.916 8.00 667 5964347.59 589828.23 Ertl CM 14929.47 9727 278.43 8781.18 887896 10513.34 537124 -9037.71 HS 8.00 667 5964351.43 589799.18 4550 15061.49 9727 278.43 8770.00 886478 1081816 5087.53 414762 95 000 6.68 596436627 58968907 Cry 10/100 1514520 97.27 278.43 8756.87 885165 10711.35 5402.62 -9249.38 169.581 0.00 6.69 596438002 58958713 15200.00 92.96 277.64 8751.98 8846636 10761.71 541025 -930342 169.651 8.00 6.70 5964386.93 589533.00 15300.00 8509 276.20 8751.68 884866 10853.12 542229 -9402.60 169.621 8.00 6.72 5964397.66 589433.69 Z-10ATgt5 15313.86 80.00 27600 8755.00 (186938 10865.67 5423.75 -9416.32 171.571 8.00 6.72 596439895 58941995 1540000 77.18 274.97 8769.07 886385 10942.50 543198 -9500.86 171.41- 8.00 6.74 5984405.96 589335.32 45N 1540413 7686 27492 8770.00 8864.78 10946.12 543222 .9504.87 777.390 600 674 596440625 589331.30 1550000 6928 27.69 879790 889268 1102821 5439.12 -959625 171.041 8.00 6.76 59644119/ 589239.84 44N 1551939 5775 27343 880500 889978 1104426 544024 -961425 170.941 600 676 596441283 589221.83 1580000 6138 27228 883961 893439 1110860 544398 -9686.% 170.441 8.00 8.77 5964415.51 589149.13 15700.00 53.50 27063 8893.38 8988.16 11182.09 544807 -9771.11 189.551 8.00 8.79 5964416.59 58906493 Cry 10/100 1575779 48.96 269.52 892956 902434 1122095 50488.15 .9816.15 HS 8.00 6.80 5964416.07 58901969 413 1581500 4096 269.52 896712 9061.90 113777 544579 -9859.31 HS 500 680 506447515 588976.75 TD 4 15821.95 48.96 269.52 8973005 908778 11263.54 544573 -%88.06 0.00 6.80 5964415.00 568970.00 Lepel Description: Northing(11) Easting(03 Surfers:4307.1 ESL 3771.6 FEL 619T11N 812E UM 5959100.070 598905.970 164n:2058 ESL 4621 FEL 13TIIN 611 EUM 5962058.120 593082.290 z-100211:3438 FSL 628 FEL 14 T11N RHEUM 5963420.000 591760000 z-1081912:3898 ESL 1153 FEL 14711N R11EUM 5963874.000 591228.170 1-108514:4380 F5L 2086 FEL 14TI1N 911EUM 5964340.000 589890000 z-10o gt 5:4445 ESL 2955 FEL 147118 R11 EUM 5964398.950 589419950 8HL:4468 FSL 3405 FEL 14TIIN RHEUM 5961415.000 588970.000 Drilling Office 2.6.1120.0 Prudhoe Bay Unit-WOA\Z-PAD\Z-10\Z-10A\Z-10A(P8) 8/31/2012 12:51 PM Page 1 of 1 North America - ALASKA - BP Prudhoe Bay PBZ Pad Z-10 Plan Z-1 OA Plan #8 Z-10A Anticollision Summary Report 04 September, 2012 BP Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Z-10 Project: `. Prudhoe Bay TVD Reference: Z-10A plan @ 94.78ft(Doyon 25) Reference Site: PB Z Pad MD Reference: Z-10A plan @ 94.78ft(Doyon 25) Site Error: 0.00ft North Reference: True Reference Well: Z-10 Survey Calculation Method: Minimum Curvature Well Error: O.00ft Output errors are at 1.00 sigma Reference Wellbore Plan Z-10A Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#8 Z-10A Offset TVD Reference: Offset Datum Reference Plan#8 Z-10A Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refen Interpolation Method: MD Interval 25.00ft Error Model: ISCWSA Depth Range: 9,603.00 to 15,823.95ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,778.32ft Error Surface: Elliptical Conic Survey Tool Program Date 9/4/2012 From To (ft) (ft) Survey(Wellbore) Tool Name Description 102.98 9,603.00 Z-10 Srvy 1 GCT multishot(Z-10) GCT-MS Schlumberger GCT multishot 9,603.00 9,606.50 Plan#8 Z-1 OA(Plan Z-1 OA) GCT-MS Schlumberger GCT multishot 9,606.50 9,950.00 Plan#8 Z-10A(Plan Z-10A) GYD-BM-MS Gyrodata-bat/mem drop m/s 9,950.00 11,506.50 Plan#8 Z-10A(Plan Z-10A) MWD MWD-Standard 9,950.00 12,530.00 Plan#8 Z-10A(Plan Z-10A) MWD+IFR+MS MWD+IFR+Multi Station 12,530.00 14,000.00 Plan#8 Z-10A(Plan Z-10A) MWD MWD-Standard 12,530.00 15,823.95 Plan#8 Z-10A(Plan Z-10A) MWD+IFR+MS MWD+IFR+Multi Station Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) PB V Pad V-01 -V-01 -V-01 15,482.88 12,225.00 1,231.41 231.31 999.69 Pass-Major Risk V-119-V-119-V-119 10,563.19 10,483.00 544.95 275.95 302.48 Pass-Major Risk PB Z Pad Z-04-Z-04A-Z-04A Out of range Z-05-Plan#4 Z-05A-Plan#4 Out of range Z-07-Z-07-Z-07 12,700.00 12,950.00 650.95 363.49 353.81 Pass-Major Risk Z-07-Z-07A-Z-07A 12,600.00 12,900.00 870.01 358.36 531.34 Pass-Major Risk Z-07-Z-07B-Plan 6 14,583.74 14,811.20 748.76 394.12 384.92 Pass-Major Risk Z-08-Z-08-Z-08 Out of range Z-08-Z-08A-Z-08A Out of range Z-09-Z-09-Z-09 Out of range Z-09-Z-09A-Z-09A Out of range Z-10-Z-10-Z-10 9,627.97 9,625.00 0.43 0.66 -0.23 FAIL-NOERRORS Z-30-Z-30-Z-30 Out of range Z-30-Z-30A-Z-30A Out of range Z-31-Z-31 -Z-31 Out of range Z-32-Z-32-Z-32 Out of range Z-32-Z-32A-Z-32A Out of range Z-32-Z-32B-Z-32B Out of range Z-32-Z-32BL1-Z-32BL1 Out of range Z-32-Z-32BPB1-Z-32BPB1 Out of range 2-32-Z-32BPB2-Z-32BPB2 Out of range Z-35-Z-35-Z-35 Out of range Z-38-Z-38-Z-38 15,819.98 16,125.00 1,331.38 709.54 680.67 Pass-Major Risk Z-38-Z-38A-Z-38A Out of range Z-38-Z-38PB1-Z-38PB1 Out of range 9/4/2012 8:59:56AM Page 2 of 3 COMPASS 2003.16 Build 73 BP Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Z-10 Project: Prudhoe Bay TVD Reference: Z-10A plan @ 94.78ft(Doyon 25) Reference Site: PB Z Pad MD Reference: Z-10A plan @ 94.78ft(Doyon 25) Site Error: 0.00ft North Reference: True Reference Well: Z-10 Survey Calculation Method: Minimum Curvature Well Error: O.00ft Output errors are at 1.00 sigma Reference Wellbore Plan Z-10A Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#8 Z-10A Offset TVD Reference: Offset Datum Reference Depths are relative to Z-10A plan @ 94.78ft(Doyon 25) Coordinates are relative to:Z-10 Offset Depths are relative to Offset Datum Coordinate System is US State Plane 1927(Exact solution),Alaska Zone 04 Central Meridian is 150°0'0.000 W° Grid Convergence at Surface is:0.75° Ladder Plot I 1800 I I I I I I I I I I I I I I I I I I I I I J J _ _ __ J J" --J_.. __ J _ 1 I I I I I I 1 I 1 I { ' I 1 I I r� I w 1 350 ' p I I I I I , I I I I 1 I I I I I l 1 I C I I 1 I I O J J J __i,• J' J J _ _ I I at. ,CrI I I Sr I I I . 1.- IZ I I I • >r .L-,1-1 I I al I I I I I I to 900 C911-41„ y I I I I I I I I � I C I I I 1 ;''. i + I I a) I I I - I I U J J J 1.- _J J -.--.--,. I I I I 2 1 r' I, C 1 U 450 I r I I 1 • I L" 1 I I I,' I I J J J __ _ _ J J I I I Ft I I I I -,‘ I I I I I7 1 I I 0 0 3000 6000 9000 12000 15000 18000 LEGEND OFd p M eaueptn(3000 ftfin) .A '-i -e•-•,, J-rt--+TIS r-45 s' a&r '-3T`- - ' -I .4119,V-119,u119 V15 --A- Z-09 Z-09,Z-09 V4 Z-32,Z-32B,Z-32B VD '_-03,Z-03,Z-03 V4 .-- Z-09,Z-09A,Z-09AV10 -8- Z32,Z-32BL1.Z32BL1VD 1"-04,Z-04,Z-04 V7 Z-10,Z-102-10 V1 -A- I32 Z-328 PB1,Z-32BPB1 VO 1"-04,Z-04AZ-04AV10 Z-108,PIanZ-108A16,PIanN2Z108AV1 -W- Z32,Z-32BP82,Z-32BPB2W ?-05,PIan#3Z05APB1,Plan#3V2 -43- Z-108,Plan Z108APB115 Plan#2Z-108APB1 v5 V1 -4- Z-33,Z-33,Z-33 V1 1.-1)5,PIan#4Z-05A,PIanN4V3 -9- Z-108,Z-108,Z-108 Vs -13- Z-33,Z-33A,Z-33AV1 '_-05,Z05.Z-05 V3 -4- Z-1122-1122-112 V2 -e-- Z-35,Z-35,Z-35 V2 '_-06,Z-06,Z-06 V1 )( Z-112.-112PB1,Z-112PB1V7 -9- Z35,Z-35PB1,Z-35PB1V2 L"-06,Z-06A,Z06AVS Z-112,2-112PB2,Z-112PB2V3 -4- Z-38 Z-38.7-38 V6 _'-07,Z-07,Z-07 V1 Z-30,Z-30,Z-30 V7 -)(- Z-38,Z-38A,Z-38AW 9/4/2012 8:59:56AM Page 3 of 3 COMPASS 2003.16 Build 73 Project: Prudhoe Bay Site: PB Z Pad Well: Z-10 Wellbore: Plan Z-10A Design: Plan #8 Z-10A From sidetrack pt to TD Scan interval 25 ft Scale 1 : 50 All offset wells pass major risk 0 330 .................... 30 • 151 al 270 I• i ' . • i • . • 90 f1� 1 !n 1'11' ; ........... 240 20 12 210 150 180 Travelling Cylinder Azimuth (TFO+AZI) [°]vs Centre to Centre Separation [50 ft/in] STANDARD ALASKA PRODUCTION COMPANY WELLHEAD LOCATION DATA 1 ) WELL: Z-10 FIELD: Prudhoe Bay Unit 2) Well Head Location 972 'from North line 1182 'from West line Section 19 , T_ 11 N, R 12 E, UPM X s 598,905. 97 y . 5,959,100.07ASP Zone 4 LAT .. 70°17'51.755" N, LONG - 149°11'56.556" W 3) Local Benchmark Elevation Pad "Mon.-2" El . 51.95 Ft. AMSL 4) Top Edge of Cellar NE Corn. (Plant) El . 53.98 Ft. AMSL 36.40 5) Kelly Bushing to Base Flange` Ft. AMSL 37.80 6) Kelly Bushing to Ground Level` Ft. AMSL 7) Base Flange Elevation 55.38 Ft. AMSL 8) Kelly Bushing Elevation 91'78 Ft. AMSL 'Measured by Drilling Foreman NOTES: 1 ) The surveyor should fill in Items 2, 3 and 4. 2) The completed form should be returned to Drilling Dept. for distribution. CIRCULATION: North Slope Production Engineering (North Slope, BOC) - 1 ,� .nDF +t Reservoir Engineering Operations (MB9-2) - 1 ice/.. �'..**4-1'l North Slope - to Rig for Posting (North Slope, BOC) - 2 _*•491 -)Ar . .* , Well Records (LR2-1 ) - 11 • / Well Files (M612-1) - 1 - - �, .....•I Drilling, Technical Assistant (M612-1 ) 1 I , ch , a Drilling, Completion Technical Assistant (MB12-1 ) - 1 �• s-• ee LSy#3798'�s ;;�,0 Graphic Services, Supv. , Cartography (MB2-4) - 1 r+1`'-i••����...�...,.`��,, 1/44 November 18, 1986 Date OVERSIZED DOCUMENT INSERT This file contains one or more oversized documents. These materials may be found in the original hard file or check the parent folder to view it in digital format. TRANSMITTAL LETTER CHECKLIST WELL NAME 7 Z —i0/1 PTD# -l 7- /3, / Development Service Exploratory Stratigraphic Test Non- onventional Well FIELD: k----/,c Xj POOL: !Check Box for Appropriate Letter/Paragraphs to be Included in Transm‘V___CLI)i. l 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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