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211-124
MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Thursday, March 7, 2024 SUBJECT:Mechanical Integrity Tests TO: FROM:Austin McLeod P.I. Supervisor Petroleum Inspector NON-CONFIDENTIAL Hilcorp North Slope, LLC Z-116 PRUDHOE BAY UN BORE Z-116 Jim Regg InspectorSrc: Reviewed By: P.I. Suprv Comm ________ JBR 03/07/2024 Z-116 50-029-23455-00-00 211-124-0 W SPT 6554 2111240 3000 1156 1153 1150 1150 308 355 356 354 REQVAR P Austin McLeod 2/1/2024 Two year to MAIP. AIO 24B.006. 30 MinPretestInitial15 Min Well Name Type Test Notes: Interval P/F Well Permit Number: Type Inj TVD PTD Test psi API Well Number Inspector Name:PRUDHOE BAY UN BORE Z-116 Inspection Date: Tubing OA Packer Depth 640 3309 3222 3210IA 45 Min 60 Min Rel Insp Num: Insp Num:mitSAM240203122646 BBL Pumped:4.4 BBL Returned:4.4 Thursday, March 7, 2024 Page 1 of 1 Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 1400 Anchorage, AK 99503 Phone: (907) 564-4891 06/01/2023 Mr. Mel Rixse Alaska Oil and Gas Conservation Commission 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 Re: Prudhoe Bay Surface Casing by Conductor Annulus Top-offs of Cement, Corrosion Inhibitor through 6/1/2023. Dear Mr. Rixse, Enclosed please find a copy of a spreadsheet with a list of Prudhoe Bay wells that were topped-off with cement, corrosion inhibitor in the surface casing by conductor annulus through 6/1/2023. Cement top-offs are executed as needed to mitigate the void space left at surface by minor cement fallback during the primary surface casing by conductor cement job. The remaining void space between the top of the cement and the top of the conductor is filled with a heavier than water corrosion inhibitor to reduce the risk of external surface casing corrosion. The attached spreadsheets include the well names, API and PTD numbers, treatment dates and volumes. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404 Report of Sundry Operations. If you have any additional questions, please contact me at 564-4891 or oliver.sternicki@hilcorp.com. Sincerely, Oliver Sternicki Well Integrity Supervisor Hilcorp North Slope, LLC Hilcorp North Slope LLC.Surface Casing by Conductor Annulus Cement, Corrosion Inhibitor Top-offReport of Sundry Operations (10-404)06/01/2023Well NamePTD #API #Initial top of cement (ft)Vol. of cement pumped (gal)Final top of cement (ft)Cement top off date Corrosion inhibitor (gal)Corrosion inhibitor/ sealant dateL-2072210815002923702003.371.31/23/2023123/1/2023L-2312230105002923746003.003.0-393/27/2023M-111810575002920589002.602.6-105/29/2023M-311920325002922256001.501.5-165/29/2023M-331941165002922504001.301.3-145/29/2023N-171830095002920898001.201.2-115/30/2023N-18A2081755002920906010.500.5-65/30/2023N-21A1961965002921342011.001.0-85/30/2023N-272071045002923365000.500.5-45/30/2023N-292141105002923521002.302.3-245/30/2023N-31215175500292356000-0--205/30/2023V-2342220045002923707006.3210.91/23/2023243/1/2023W-2412221545002923741002.502.5-263/1/2023Z-121891025002921977000.700.7-45/23/2023Z-34212061500292346900-0--155/27/2023Z-402111735002923462000.700.7-65/27/2023Z-46A2052035002923280010.500.5-35/23/2023Z-502120015002923463000.500.5-35/27/2023Z-662121955002923482000.700.7-85/27/2023Z-116211124500292345500-0--175/27/2023Z-210204181500292322600-0--125/27/2023Z-2292221045002923726003.8361.23/5/2023363/27/2023-0--Z-116211124500292345500175/27/2023 MEMORANDUM State of Alaska Depth Alaska Oil and Gas Conservation Commission TO:Jim Re 2�(1 ZI t�4'ZGy DATE: Thursday, February 13, 2020 � P.I. Supervisor (r SUBJECT: Mechanical Integrity Tests w'TVD BP Exploration (Alaska) Inc. 6554 - Z-116 FROM: Guy Cook PRUDHOE BAY UN BORE Z-116 Petroleum Inspector �TypeTest Src: Inspector Test psi Reviewed By: IA P.I. Supry NON -CONFIDENTIAL Comm Well Name PRUDHOE BAY UN BORE Z-116 API Well Number 50-029-23455-00-00 Inspector Name: Guy Cook Permit Number: 211-124-0 Inspection Date: 2/12/2020 - Insp Num: mitcDc200213081006 Rel Insp Num: Interval REQVAR P/F F ' Notes: AA 248.006 requires 24 month MIT -IA to maximum injection pressure. MIT performed with a Little Red Services pump truck, currently calibrated gauges and a bleed trailer. The well was flowing at 120 degrees Fmenheit and the diesel pumped was at 90 degrees Farenheit. Thursday, February 13, 2020 Page I of 1 Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well z-116 -Typelnj w'TVD 6554 - Tubing 1164 1 11 4 1164 - 1164 PTD 2nlzao �TypeTest sPT Test psi 63s IA aas 331z 3237 3227 BBL Pumped: 8.4 BBL Returned: 5.1 OA 330 ao9 — 411 412 Interval REQVAR P/F F ' Notes: AA 248.006 requires 24 month MIT -IA to maximum injection pressure. MIT performed with a Little Red Services pump truck, currently calibrated gauges and a bleed trailer. The well was flowing at 120 degrees Fmenheit and the diesel pumped was at 90 degrees Farenheit. Thursday, February 13, 2020 Page I of 1 Wallace, Chris D (DOA) From: AK, GWO Well Integrity Engineer <AKGWOWellSiteEnginee@bp.com> Sent: Thursday, March 14, 2019 2:37 PM To: Wallace, Chris D (DOA); AK, OPS EOC Specialists; Ak, OPS GC2 Facility PTL; Ak, OPS GC2 Field PTL; AK, OPS GC2 OSM; AK, OPS GC2 Wellpad Lead; AK, OPS PCC Ops Lead; AK, OPS Prod Controllers; AK, OPS Well Pad DFT N2; AK, OPS Well Pad HUQ AK, OPS Well Pad LV; AK, OPS Well Pad MN; AK, OPS Well Pad RJ; AK, OPS WELL PAD S; AK, OPS Well Pad SW; AK, OPS WELL PAD W; AK, OPS Well Pad Z; Ak, Ops West Area TL; AK, RES GPB East Wells Opt Engr; AK, RES GPB West Wells Opt Engr; AKOpsProdEOCTL, Duong, Lea; Nottingham, Derek; Peru, Cale; Thompson, Ryan; Wellman, Julie; Youngmun, Alex Cc: Regg, James B (DOA); AK, GWO Completions Well Integrity; AK, GWO DHD Well Integrity; AK, GWO Projects Well Integrity; AK, GWO SUPT Well Integrity, AK, GWO Well Integrity Well Information; AK, OPS FF Well Ops Comp Rep; AKIMS App User, Cismoski, Doug A, Daniel, Ryan; Dempsey, David G; Dickerman, Eric, Hibbert, Michael; Janowski, Carrie, Montgomery, Travis J; Munk, Corey; Obrigewitch, Beau; O'connor, Katherine; Sternicki, Oliver R; Tempel, Joshua; Worthington, Aras J Subject: OPERABLE: Injector Z-116 (PTD #2111240) AOGCC administrative approval for continued operation with slow TxIA communication Attachments: aio24B.006.pdf 0 Injector Z-116 (PTD #2111240) was made not operable on 12/3/2018 for having slow inner annulus repressurization while on MI. On 3/5/2019 the AOGCC granted administrative approval 246.006 for continued WAG operation with slow TxIA communication. At this time the well is reclassified as Operable. Please review the attached AA and note the conditional requirements for operation. Please respond with any questions, Joshua Stephens Well Integrity Engineer Office: 907-659-8110 Cell: 907-341-9068 From: AR-,iSWO Well Integrity Engineer Sent: Monday, Dec , 2018 12:26 PM To: 'chris.wallace@alaska.g0 iris.wallace@alaska.gov>; AK, OPS EOC Specialists <AKOPSEOCSpecialists@bp.com>; Ak, OPS GC2 Facility PTL <AKOPSGC OTL@bp.com>; Ak, OPS GC2 Field PTL <AKOPSGC2FieldOMTL1@bp.com>; AK, OPS GC2 OSM <AKOPSGC2CSM@bp.com3, OPS GC2 Wellpad Lead <AKOPSGC2WellpadLead@bp.com>; AK, OPS PCC Ops Lead <AKOPSPCCOpsLead@bp.com>; AK, OP d Controllers <akopsprodcontrollersl@bp.com>; AK, OPS Well Pad DFT N2 <AKOPSWellPadDFTN2@bp.com>; AK, OPS Pad HUQ<AKOPSWellPadHUQ@bp.com>; AK, OPS Well Pad LV <AKOPSWellPadLV@bp.com>; AK, OPS Well Pad MN <A WellPadMN@bp.com>; AK, OPS Well Pad RJ <AKOPSWellPadRJ@bp.com>; AK, OPS WELL PAD S <AKOPSWELLPADS@bp. >; AK, OPS Well Pad SW <AKOPSWeliPadSW@bp.com>; AK, OPS WELL PAD W <AKOPSWELLPADW@bp.co K, OPS Well Pad Z • • MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission v11€2 DATE: Monday,March 05,2018 TO: Jim Reggt P.I.Supervisor SUBJECT: Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC. Z-I16 FROM: Adam Earl PRUDHOE BAY UN BORE Z-116 Petroleum Inspector Src: Inspector Reviewed By: P.I.Supr<li,, - NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UN BORE Z-116 API Well Number 50-029-23455-00-00 Inspector Name: Adam Earl Permit Number: 211-124-0 Inspection Date: 2/23/2018 Insp Num: mitAGE180224060506 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well z-116 PTD 2111240 Type Test SPT Test psi: 1638 IA 367 2570 2567. 3238 T yp j TVD 6554 - Tubing 25662567 • 3300 - 3252 - 3238 BBL Pumped: 10.9 $$I,Returned, 6 OA 339 J 360• 364 . 364 Interval OTHER - .P/F P Notes: MIT/IA while on gas injection,they think well has very slow communication,this is what spurred this test. Monday,March 05,2018 Page 1 of 1 • • MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE: Friday,March 02,2018 TO: Jim Regg � y P.I.Supervisor '�)(d�Ci 31`102" SUBJECT: Mechanical Integrity Tests l 6 BP EXPLORATION(ALASKA)INC. Z-116 FROM: Adam Earl PRUDHOE BAY UN BORE Z-116 Petroleum Inspector Src: Inspector Reviewed By: P.I.Supry 142-- NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UN BORE Z-116 API Well Number 50-029-23455-00-00 Inspector Name: Adam Earl Permit Number: 211-124-0 Inspection Date: 2/24/2018 Insp Num: mitAGE180224060506 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well z-116 Type Inj—I G TVD 6554 Tubing 2566 - 2570 2567 2567" PTD 1 2111240 Type Test SPT Test psi 1638 IA 367 3300 • 3252 - 3238 BBL Pumped: 10.9 - BBL Returned: 6 OA 339_ 360 - 364 364 Interval OTHER P/F P ✓ Notes: MIT/IA while on gas injection,they think well has very slow communication,this is what spurred this test. TA SC Friday,March 02,2018 Page 1 of 1 • • Wallace, Chris D (DOA) From: AK, GWO Well Integrity Engineer <AKGWOWellSiteEnginee@bp.com> Sent: Friday, February 23, 2018 4:11 PM To: Wallace, Chris D (DOA);AK, OPS EOC Specialists;AK, OPS GC2 Facility OIL;AK, OPS GC2 Field O&M TL;AK, OPS GC2 OSM;AK, OPS GC2 Wellpad Lead;AK, OPS PCC Ops Lead; AK, OPS Prod Controllers;AK, OPS Well Pad HUQ;AK, OPS Well Pad LV;AK, OPS Well Pad MN;AK, OPS Well Pad RJ;AK, OPS WELL PAD S;AK, OPS Well Pad SW;AK, OPS WELL PAD W;AK, OPS Well Pad Z;Ak, Ops West Area IL;AK, RES GPB East Wells Opt Engr;AK, RES GPB West Wells Opt Engr;AKOpsProdEOCTL; Frankenburg,Amy;Zoesch, Eric Cc: Regg,James B (DOA);AK, GWO Completions Well Integrity;AK, GWO DHD Well Integrity;AK, GWO Projects Well Integrity;AK, GWO SUPT Well Integrity;AK, GWO Well Integrity Well Information;AK, OPS FF Well Ops Comp Rep;AKIMS App User;Cismoski, Doug A; Daniel, Ryan; Dempsey, David G; Hibbert, Michael;Janowski, Carrie; Montgomery,Travis J; Munk, Corey;Obrigewitch, Beau; O'connor, Katherine; Romo, Louis A;Sternicki, Oliver R;Tempel,Joshua;Worthington,Aras J Subject: NOT OPERABLE: Injector Z-116 (PTD#2111240)slow IA repressurization, needs AA before continued injection external-email: 0 All, Injector Z-116(PTD#2111240)was put Under Evaluation on 01/27/18 after it was discovered to have slow inner annulus repressurization.The inner annulus was monitored during the Under Evaluation period and was observed to have a buildup rate of—15 psi/day.On 02/23/18 DHD performed a passing State witnessed MIT-IA to 3,238 psi.The well is now classified as Not Operable to pursue Administrative Approval for continued injection. Work Completed/Plan Forward: 1. DHD: Monitor repressurization and quantify build up rate.—Complete 2. DHD: Perform State witnessed MIT-IA-Complete 3. Engineer:Anchorage g g eer:Submit application for AA. Please respond if in conflict. SCANNED Andrew Ogg Well Integrity Engineer BP Global Wells Organization-Alaska Office:907-659-8110 F a •• AK, GWO Well Integrity Engineer Sent: Satur.. _• . 27, 2018 5:17 AM To: 'chris.wallace@alaska.go , •'S EOC Specialists; AK, OPS GC2 Facility OTL; AK, OPS GC2 Field O&M TL; AK, OPS GC2 OSM; AK, OPS GC2 Wellpad Lead; AK, •= Ops Lead; AK, OPS Prod Controllers; AK, OPS Well Pad HUQ; AK, OPS Well Pad LV; AK, OPS Well Pad MN; AK, OPS Well •. •_• AK, OPS WELL PAD S; AK, OPS Well Pad SW; AK, OPS WELL PAD W; AK, OPS Well Pad Z; Ak, Ops West Area TL; AK, RE ast Wells Opt Engr; AK, RES GPB West Wells Opt Engr; Bergene, Matthew; Frankenburg, Amy; Zoesch, Eric Cc: 'Regg,James B (DOA) (jim.regg@alaska.gov)'; AK, GWO Completions Well Integri-,, GWO DHD Well Integrity; AK, GWO Projects Well Integrity; AK, GWO SUPT Well Integrity; AK, GWO Well Integrity Well In • ation; AK, OPS FF Well Ops Comp Rep; AKIMS App User; Cismoski, Doug A; Daniel, Ryan; Dempsey, David G; Hibbert, I --I• Janowski, Carrie; Montgomery,Travis J; Munk, Corey; Obrigewitch, Beau; O'connor, Katherine; Romo, Louis A; Sternicki, a • er R; 1 1 • Wallace, Chris D (DOA) From: AK, GWO Well Integrity Well Information <akgwowellintegritywe@bp.com> Sent: Monday,January 30, 2017 7:09 AM ,Sent: AK, GWO SUPT Well Integrity;AK, OPS GC2 OSM;AK, OPS GC2 Field O&M IL;AK, OPS GC2 Wellpad Lead;AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan;AK, RES GPB West Wells Opt Engr;AK, RES GPB East Wells Opt Engr;AK, OPS Well Pad Z; Zoesch, Eric;Wallace, Chris D (DOA);AKIMS App User; Dempsey, David G; Hibbert, Michael;Janowski, Carrie; Montgomery,Travis J; Munk, Corey; Obrigewitch, Beau; Pettus,Whitney; Sternicki, Oliver R;Tempel,Joshua;Worthington,Aras J Cc: AK, GWO DHD Well Integrity;AK, GWO Projects Well Integrity;AK, GWO Completions Well Integrity;AK, OPS FF Well Ops Comp Rep; Regg,James B (DOA);AKIMS App User Subject: UPDATE 1/30/17 - UNDER EVALUATION:Injector Z-116 (PTD#2111240) Possible Inner Annulus by Outer Annulus Communication All, Injector Z-116(PTD#2111240)was Under Evaluation due to potential Tubing x Inner Annulus(IA) communication.After 28 days of monitoring,the anomalous IA pressure trend appears to have been due to thermal effects.Also,diagnostic work has confirmed two competent well barrier envelopes,as evidenced by a passing Positive Pressure Packoff Test- Tubing(PPPOT-T)and passing MIT-IA. In the past week,the well has begun to exhibit anomalous Inner Annulus(IA)and Outer Annulus(OA) pressure trends, possibly indicative of IA x OA communication. The well will remain classified as Under Evaluation for further diagnostics, for a period of 7 additional days. Work Completed/Plan Forward: 1. Wellhead: PPPOT—Inner Casing—Passed 01/07/17 2. Wellhead: PPPOT—Tubing—Passed 01/17/17 3. Fullbore Pumping: MIT-IA—Passed 01/18/17 4. Downhole Diagnostics: Bleed IAP&monitor wellhead pressures—In progress 5. Well Integrity Engineer:Additional diagnostics as needed Please reply if in conflict with proposed plan. Matt Ross SCANNED FEB 1 0 2017 (Alternate: Josh Stephens) Well Integrity Engineering Office 907-659-8110 Cell 907-980-0552 Harmony 4530 1 • • Wallace, Chris D (DOA) From: AK, GWO SUPT Well Integrity <AKDCWelllntegrityCoordinator@bp.com> Sent: Monday, January 02, 2017 11:48 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, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; AK, OPS Well Pad Z; Zoesch, Eric;Wallace, Chris D (DOA) Cc: AK, GWO DHD Well Integrity; AK, GWO Projects Well Integrity;AK, GWO Completions Well Integrity;AK, GWO SUPT Well Integrity; AK, OPS FF Well Ops Comp Rep; Regg, James B (DOA); AKIMS App User; Hibbert, Michael;Janowski, Carrie; Montgomery, Travis J; Munk, Corey; Obrigewitch, Beau; Pettus, Whitney; Sternicki, Oliver R;Tempel,Troy; Worthington, Aras J Subject: UNDER EVALUATION:Injector Z-116 (PTD #2111240) Possible Tubing by Inner Annulus Communication Attachments: Injector Z-116 (PTD#2111240) TIO Plot 2017-01-02.docx All, Injector Z-116 (PTD#2111240) has begun to exhibit anomalous Inner Annulus (IA) pressure trends, possibly indicative of Tubing x IA communication.The well is reclassified as Under Evaluation for further diagnostics. Plan Forward: 1. Downhole Diagnostics: Monitor wellhead pressures—In progress 2. Fullbore Pumping: MIT-IA 3. Wellhead: Positive Pressure Packoff Test—Tubing 4. Well Integrity Engineer: Additional diagnostics as needed A TIO and Injection plot is attached. Please reply if in conflict with proposed plan. Thanks, Adrienne McVeycatiNS JAN 1 8 Well Integrity Superintendent—GWO Alaska (Alternate:Jack Lau) 0: (907)659-5102 C: (907)943-0296 H:2376 1 ' . • Injector Z-116(PTD#2111240) TIO Plot 01/02/2017z 116 2 60 OO4 -000: v 66.ib 1.09 1/ 10 1616 i0216 I41016 111051ZDet nf .t 12 fe Injection Plot WaI ZI% SOX •f010 -SYG 2000N -.500 1600 -aU4 -YNF 11.600 1100 GOOF -Ott, —0. 00D. --SCC 600 OD 000 IOLM% 1O69/16 IWIC% IORNf !Gilt IIAN% tNNi 169616 IOT'tf e e c`b 0 I 0 O O. i _ 0 N N a -0 O � N N I a) a) Z Z Z N in o 1 $ y o o c° O O M �' C 'O y N > N N (I) 0) 7 N 1 5 _ o) 0 m 1 v W W W N Q N9 — 'iI >-cD1 C) ) N G) h 0 0 0 W co h O t) 14k a Cl) 0 0 N N N r 9 >. a) 'O V N O. m N� N� N� m N co N f0 a N N U U U � 43— Z Z 5 m o o (�� C� m m CO D Ems° E0 F. co w? cii Z Z N N COi 0 o� >- CO C al N ° r r m Z UCt Q a) o) 0 a Q Z 0 Z a) y d c ¢ v NI NI NI v w 'it c "� Z5 1 0 o a a co'" ..9. m _ m m mw v 00 �2 0 Q 0 ' 0 C ac:`-c a) r a) - o cn c ai ui ui u) ai a ai D m o m o Z d a a a a C co U. ii LL LL Li_ L.L. 0 w d E a)a) co a) U) a) o N o c� c� cQ o Z 0 a 0 0 4 o E art ec N0: N m C c c ° c c_ E o c co o 0I o = > m > m > >0 c 0 0 0 0 0 0 IL O N„,Ce O V O V o () coo a a co v ° v v Q < - ' Z Z Z Z ;g Z 2 0 C 0 C 0 > > m 0 o a) a) a) a) a)0 a) _W a) 0 a) 0 Ce Q N EO 2 cn 2 In 2 0) 0)-o 2 2. 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(N (N e- N N N W w O H N d N a y a' o c y = O 1 >• E EZ N w . W f6 a CS- \ y z Q o o � Q o 0 y I . c U 03 j U U V a .7 •O 'i1 d a N '� E j! Q. V Q Q o o o E y E E a 2 W J 3 1 F. 0 a0 1 0 U c I I 0 0 SEP 18$cblumberger DATA LOGGED / 1/2013 M K BENDER O Drilling & Measurements - MWD/LWD Log Product Delivery 2l\— `'2.24! 2334 Customer BP EXPLORATION ALASKA INC Dispatched To: MAKANA BENDER Well No Z-116,Z-116 PB1,Z-116 PB2 Date Dispatched: 18-Sep-13 Installation/Rig DOYON 14 Dispatched By: STEFANIE CREIGHTON Data Survey No Of Prints No of CDs Z-116 Log 1 2 in MD 1 2inTVD 1 5 in MD 1 5 in TVD 1 Z-116 PB1 Log 1 1 2 in MD 1 2inTVD 1 5 in MD 1 - 5in TVD 1 Z-116 PB2 Log 1 1 2inMD 1 2inTVD 1 5 in MD 1 5inTVD 1 The 2 in TVD and the 5 ih TVD prints,for Z-116 PB2 are in the same file. Received By: Paa,AlPlease sign and return one copy to: D&M,2525 Gambell Street,Suite 400 Anchorage,Alaska 99503 hechetoslb.com Hector Echeto Fax:907-561-8317 TRANSMITTAL#:6403 REcEiv SchiumbergercQQG201E3D SEP 18 2013 M K BENDER Drilling & Measurements MWD/LWD Log Product Delivery — 2`3-fit Customer BP EXPLORATION ALASKA INC Dispatched To: MAKANA BENDER ( Well No Z-116,Z-116 PB1,Z-116 PB2 Date Dispatched: 18-Sep-13 Installation/Rig DOYON 14 Dispatched By: STEFANIE CREIGHTON Data Survey No Of Prints No of CDs Z-116 Log 1 1 2 in MD 1 2 in TVD 1 5inMD 1 5 in TVD 1 Z-116 PB1 Log 1 1 2 in MD 1 ' 2 in TVD 1 5inMD 1 5 in TVD 1 Z-116 PB2 Log 1 1 2inMD 1 . 2 in TVD 1 5inMD 1 5 in TVD 1 The 2 in TVD and the 5 ih TVD prints for Z-116 PB2 are in the same file. Received By: 9 lla1.1.l�/�JQP Please sign and return one copy to: D&M,2525 Gambell Street,Suite 400 Anchorage,Alaska 99503 hecheto(cr�,slb.com Hector Echeto Fax:907-561-8317 TRANSMITTAL#:6403 Schiumberger ATA�203D SEP 18 M K BENDERAOGf e Drilling & Measurements MWD/LWD-Log Product Delivery X3342 Customer BP EXPLORATION ALASKA INC Dispatched To: MAKANA BENDER Well No Z-116,Z-116 PB1,Z-116 PB2 Date Dispatched: 18-Sep-13 Installation/Rig DOYON 14 Dispatched By: STEFANIE CREIGHTON Data Survey No Of Prints No of CDs Z-116 Log 1 1 2inMD 1 2inTVD 1 5 in MD 1 5 in TVD 1 • Z-116 PB1 Log 1 1 2 in MD 1 2 in TVD 1 5inMD 1 5 in TVD 1 Z-116 PB2 Log 1 1 2 in MD 1 2inTVD 1 5inMD 1 5inTVD 1 The 2 in TVD and the 5 ih TVD prints-for Z-116 PB2 are in the same file. Please and return one copy By: 70 ��2����� sign to: D&M,2525 Cambell Street,Suite 400 Anchorage,Alaska 99503 hecheto(a�slb.com Hector Echeto Fax:907-561-8317 TRANSMITTAL#:6403 ei- Oma, MOO Z Cr) Liti eq N x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 G 0p 0 0 0 0 0 U U U U U U U U U U U U U U U U U U 0 0 0 0 0 0 U e J `" o 1 CC v � c ', Z0 zO ti:a (--6, iH1 135 F- 0 ? ere 99 -`_" N T N esi N T T N M M N N N N N N M N Tc...! N N NT M TN1 MM M M O U.1 T T T T T T T TTT T TT T T T T m L > a .) m > a) = 33 . t'`..: (13 F- 7Q, a a ) a (Y3 3O 7 up y o a) 3 a) 5 p Q a QZoQ ' QOz -) Z 0 - 0 D - M O O NM N OM co t M T O OrN M S 1n N O N CO N o) O N O ytin T N T TNN TT MTNsTNTNNTN T N T N 11- 1H. 1--7,11- __Virf) , P z a O F- W a H Z F. 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U 0 0 -' O ( o) O O m c°)o D m Q X IE o mQvetY- UmOCOMCOI:LCO co u- � MCtNtoUccoto < cp0QXco CON LILLJrn O ma v o ^ m m U U m m m m U U U m U U m U U m U U m U U 0030000 O :� N u1 N Y O V, Y p +,v n O ce)O M Q C. a• `) v Q Q1 -1 Q Q CO U m U CO m Q T O a Q Q a0 Q U 00 U T N m F•. z9 ,- ,- LoN C0 m 0 N _ .. J O h. O et CO co T c0 T CO O in W CO r` ti co N9 O O a 0 c = w E u W N T 0 O 9 T T O O T M p M v. T O N T T O a CO CO Z a 99 c0 N LL m s 2 = z ro o p Y o aT° N Z J o rV 2 LL 2 W 0 6 M co •C7 p N . O Q. co E. w in N N N e- �' 7 a) Y , CVU �� � � a § tea 777it7/7 ) 1/ l Wallace, Chris D (DOA) From: AK, D&C Well Integrity Coordinator[AKDCWelllntegrityCoordinator@bp.com] Sent: Sunday, September 09, 2012 4:30 PM To: Regg, James B (DOA); Schwartz, Guy L (DOA); Wallace, Chris D (DOA); Brooks, Phoebe L (DOA); AK, D&C Well Integrity Coordinator; AK, OPS GC1 OSM; AK, OPS FS1 OSM; AK, OPS Area Mgr North (Gas Plants GPMA); AK, OPS GC2 OSM; AK, OPS FS1 DS Ops Lead; AK, OPS FS1 Facility OTL; AK, OPS FS2 DS Ops Lead; AK, OPS FS2 Facility OTL; AK, OPS FS3 DS Ops Lead; AK, OPS FS3 Facility OTL; AK, OPS GC1 Facility OTL; AK, OPS GC1 Wellpad Lead; AK, OPS GC2 Facility OTL; AK, OPS GC2 Wellpad Lead; AK, OPS GC3 Facility& Field OTL; AK, OPS GC3 Wellpad Lead; AK, OPS GPMA Facility OTL; AK, OPS LPC DS Ops Lead; AK, OPS Ops Supt; Kurz, John; AK, OPS MPU OSM; AK, OPS MPU Field Lead Tech; AK, OPS MPU Field Ops TL; AK, OPS MPU Well Ops Coord; AK, OPS MPU Wells Ops Coord 2; AK, OPS Nstar Lead Tech; AK, OPS Nstar OIM; AK, OPS Nstar O&M TL; Nash, Justin; Daniel, Ryan; AK, RES END Production Optimization Engineer; Sauve, Mark A Subject: Monthly Injection Report for GPB, GPMA, Northstar, Milne Point& Endicott for August 2012 Attachments: AOGCC Inj Report 8-2012.zip Jim, Phoebe, Guy and Chris, Attached is the August 2012 Injection Report for GPB, GPMA, Northstar, Milne Point and Endicott injectors operating under a Sundry or Administrative Approval. <<AOGCC Inj Report 8-2012.zip>> Notes on wells: Added to Report: None Taken off Report: MPB-25 (PTD# 1972330) Long Term Shut In, added to Quarterly Injection Report. No known integrity issues NS27 (PTD#2010270) Monitored for IA repressurization following Seal-Tite repair in 3/24/12. No signs of IA repressurization. Z-116 (PTD#2111240) Due for 4 years compliance testing. Witnessed MIT-IA passed on 08/02/2012 Thank you, Gerald Murphy i?Teen Vazir BP Alaska - Well Integrity Coordinator WIC Office: 907.659.5102 WIC Email: AKDCWellIntegrityCoordinator(a)BP.com 1 MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: Jim Regg DATE:Tuesday,August 21,2012 P.I.Supervisor e U(ZZII i SUBJECT:Mechanical Integrity Tests l BP EXPLORATION(ALASKA)INC Z-116 FROM: Chuck Scheve PRUDHOE BAY UN BORE Z-116 Petroleum Inspector Src: Inspector Reviewed By: P.I.Supry-4 — NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UN BORE Z-116 API Well Number 50-029-23455-00-00 Inspector Name: Chuck Scheve Permit Number: 211-124-0 Inspection Date: 8/2/2012 Insp Num: mitCS120802163812 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well 2-116 - Type Inj W'TVD 6554 , IA 504 2500 2466 • 2461 - PTD 2111240 • Type Test SPT Test psi 1638 . OA 72 200 . 195 196 Interval INITA1- - P/F P ' Tubing 1247 • 1246 - 1245 1243 - Notes: Tuesday,August 21,2012 Page 1 of 1 Phu P zii(ZAO Regg, James B (DOA) From: AK, D&C Well Integrity Coordinator[AKDCWeIIlntegrityCoordinator@bp.com] Sent: Monday, July 30, 2012 10:05 PM \</q. � 1/': i To: Regg, James B (DOA) f Cc: AK, D&C Well Integrity Coordinator; Daniel, Ryan Subject: RE: Missing MITs Attachments: Z-116 (PTD#2111240) TIO -Flowline Temperature- Injection Plots.docx; Z-116 (PTD# 2111240)wellbore schematic.pdf Jim, The pressures have been up and down quite a bit for the well but I believe it is all thermally related. The injection rate has become a lot more stable after about July 10th. I've included a plot with the TIO and flowline temperature and a plot with the wellhead versus injection rate since the start up in May. The well is show good separation in the annular pressures. The well has only had one noted bleed which was done on 5/22 on the IA, which was noted as all diesel. I've included a wellbore schematic also for reference. Please let me know if I can be of further assistance. Jerry Murphy BPXA Well Integrity Coordinator From: Regg, James B (DOA) [mailto:jim.regg@alaska.gov] Sent: Monday, July 30, 2012 5:23 PM To: AK, D&C Well Integrity Coordinator Subject: RE: Missing MITs IA pressures in Z-116 have been all over the place. How much of this is attributable to pressure bleeds; in other words, how stable have the injection conditions been since start up? Jim Regg AOGCC 333 W.7th Ave,Suite 100 Anchorage,AK 99501 907-793-1236 From: AK, D&C Well Integrity Coordinator [mailto:AKDCWeIIlntegrityCoordinator@bp.com] Sent: Monday, July 30, 2012 3:38 PM To: Regg, James B (DOA) Cc: Wallace, Chris D (DOA); Daniel, Ryan; Cismoski, Doug A Subject: RE: Missing MITs Jim, Regarding the 2 wells that you note: PBU 04-350(PTD#2111060) had an AOGCC witnessed MIT-IA completed 07/10/2012. The previous MIT-IA test on this was 02/05/2012. The well was shown to be on injection from May 5th-22nd 2012 which was the initial injection since the completion of the rig workover finished 11/19/2011. When the well was brought on May 5th,there were suspected 1 flow meter problems as the well indicated 2500 bbls per day with 0 psi injection pressure and was showing a flat line injection on the rate and pressure. Operations worked on repairing the flow meter from 05/05-05/22. At that time, an AOGCC MIT-IA was not planned until the well could show stabilization and scheduling with an inspector could be coordinated. The well was left shut in until completion of the Flow Station 1 turnaround and did not return to water injection on 07/02/2012. PBU Z-116 (PTD#2111240) has not had a witnessed AOGCC MIT-IA since it went to injection 05/15/2012. The last MIT- IA was performed on 03/29/2012 after well tests were completed while pre-producing the well and the gas lift valves were dummied off. While being produced from 03/19-22/2012, the well was classified initially as a "Producer" in our database system. After the completion of the production tests,the well was never reclassified as a "WAG Injector" in the AnnComm database. This failure, which was a human error on the Well Integrity Coordinator's position, which resulted in the well not being highlighted as requiring a MIT-IA for compliance in our reporting system. It has been corrected, and a review of the incident to insure no other wells are mislabeled in the system is taking place. The well has been scheduled for a witnessed AOGCC MIT-IA on Thursday(8/2), which is the first available time the slope inspector had. I have included copies of the MIT-IA's that were performed prior to injection for both wells, the current AOGCC witnessed test on 04-350, and an excel sheet with TIO and Injection data for the last 6 months for both wells for reference. I'm apologize for this error. Please let me know if I can answer any other questions or concerns regarding this matter. Regards, Gerald Murphy (alt. Mehreen Vazir) Well Integrity Coordinator Office (907) 659-5102 Cell (907) 752-0755 Email: AKDCWelllntegrityCoordinator( BP.com From: Regg, James B (DOA) [mailto:jim.regg@alaska.gov] Sent: Monday, July 30, 2012 11:47 AM To: AK, D&C Well Integrity Coordinator Cc: Wallace, Chris D (DOA) Subject: Missing MITs PBU 04-350(PTD 2111060); injected 18 days in May; unknown since. No record of MIT in our files PBU Z-116 (PTD 2111240); injected 17 days May, 26 days June; unknown since. No record of MIT in our files Jim Regg AOGCC 333 W.7th Ave,Suite 100 Anchorage,AK 99501 907-793-1236 2 • PBU Z-116 PTD #2111240 7/30/2012 TIO Pressures and Flowline Temperature Plot Z-116 TIO and Flowline Temperature Plot 2,500 — 150 - 140 2,000 - 130 1,500 — Fs,/ - 120 ✓v a 4 1,0001111 11;111‘ - 110 - 100 500 �I - 90 0 80 1 ti �\ ti ti ti ti ti ti ti ti ti 'V 4:>'O,' O' OQ' ,O' O' O,' Oti O, Oti O. O' N.41' '1, L <,LLLp� \L ' � pLpL 4 . 4 4)\. (c\ (P (P6tiA\ '\\' A\ti 'ti 11 —Flow Line Pressure —Inner Annulus Pressure —Outer Annulus Pressure—Flow Line Temperature Injection Plot M11.2.116 1704 2 3,T I -;:lf PcV&A IBM 300 t —x>tr ,aoo_ _M 1.1700 —,.- on 900 500 9 KO 2° A M 300 200 0SV512 091212 061912 05%12 002n2 06.091,2 261612 OV412 0630'12 02Q212 071.,n2 07/2112 028612 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION Mechanical Integrity Test • Submit to: jim.regq(aDalaska.gov doa.aogcc.prudhoe.bav(cDalaska.gov; phoebe.brooks(aalaska.govi tom.maunder@alaska.nov OPERATOR: BP Exploration(Alaska),Inc. M '41(1 ( ( v FIELD/UNIT/PAD: Prudhoe Bay/PBU/Z l( • DATE: 03/29/12 OPERATOR REP: Mehreen Vazir AOGCC REP: Packer Depth Pretest Initial 15 Min. 30 Min. 45 Min. 60 Min. Well Z-116 Type Inj. N ' TVD -6,554' Tubing 1500 ' 1850 • 1850 _ 1850' Interval 0 P.T.D. 2111240 - Type test P Test psi '1638.5 Casing 1450 3000'_ 2976 2976 P/F P Notes: Initial pre injection MIT-IA OA 0 0 0 0 Well Type Inj. TVD Tubing Interval P.T.D. Type test Test psi Casing P/F Notes: OA Well Type Inj. TVD Tubing Interval P.T.D. Type test Test psi Casing _ P/F Notes: OA Well Type Inj. TVD Tubing Interval • P.T.D. Type test Test psi Casing P/F Notes: OA Well _ Type Inj. TVD Tubing Interval P.T.D. Type test Test psi Casing P/F Notes: OA TYPE INJ Codes TYPE TEST Codes INTERVAL Codes D=Drilling Waste M=Annulus Monitoring I=Initial Test G=Gas P=Standard Pressure Test 4=Four Year Cycle I=Industrial Wastewater R=Internal Radioactive Tracer Survey V=Required by Variance N=Not Injecting A=Temperature Anomaly Survey T=Test during Workover W=Water D=Differential Temperature Test 0=Other(describe in notes) Form 10-426(Revised 06/2010) 2012-0326_MIT_Z-116 TFEE= ' ' VW SAFE.. NOTES: WELL ANGLE>70°@ 3895' WELLHEAD= FMC ACTUATOR'" LEO ME-60 Z-116 ORIG.KB.ELE\ 87.3' ORIG. BF.ELE\ 53.5' I I KOP= 164' x Ang = 98° @ 15738' 20"CONDUCTOR, 115' I 2035' —14-1/7 HES X NIP,ID=3.813" Male Datum MD= 12401 129.5#,X-65, Datum TVD= 6600. SS 1[ 18.770" u— 3161' 13-3/8"X 9-5/8"ZXPN LIP,FLEX LOCK FIGR& w/9-1/7'PBR,ID=8.83' 13-3/8"CSG,68#,L-80 BTC,ID=12.415" I3312' 9-5/8"CSG,40#,L-80 BTC, ID=8.835" 1 6345' 1-4111 I II. GAS LIFT MANDRELS RT DATE ST MD IVO DEV TYPE VLV LATCH PO 3 6052 3361 68 KBG2 DMY BK 0 03/29/12 Minimum ID = 3.725" @ 12309' 2 10500 5301 43 KBG2 DMY BK 0 03/29/12 1 12097 6489 48 KBG2 DMY BK 0 12/25/11 4-1/2" HES XN NIPPLE 7"CSG,26#, L-80 VA M TOP NC — 11953' —>i< >.< XO TO L-80 TC-11 II 12168' —14-1/2"HES X NIP,ID=3 813" Z 10..... 12194' _--17"X 4-1/2"HES TNT PKR,ID=3.856" I 12236' —14-1/2"HES X 11P,ID=3 813" 12309' —14-1/2"HES XN NIP,ID=3.725" I 1 12315' Hr X 5"BKR ZXP LTP w/11 62'TIEBK,ID=4,39" 4-1/2"TBG,12.6#,L-80 TCII, H 12322' ,--7-. . . 12322' —14-1 12"WLEG,ID'"3.958" 77.1° .0152 bpf,ID-3.958" fr:' —I BAD TT NOT LOGGED •• **A • • il`• •4 •:: 12338' -dr X5"BKR WC HYD LNR HGR,ID=4.36" • •4 X ••4 • • •4 • 12348' —5"X 4-1/2"XO BUSHING,ID=3.90 • 0* •4 • • •4 • • • lo •4 • • •&4 • r VVHIPSTOCK(11/19/11) —1 12501' \ •-i 10 • MLLOUT WINDOW(Z-116) 12502'-12516' • •4 N • ••4 7"CSG,26#,L-80 TC-11,.0383 bpf,ID=6.276" — 12945' PERFORATION SUMMARY atOgit!,....,, N4b4i r -: . ',,,,,,',,:P•„+ REF LOG:SLB CCU GR/IBC ON 12/22/11 44444•40 ANGLE AT TOP PERF:98°©12830' ........• ********* N41 _ Note:Refer to Production DB for historical perf data 444444444' 444444444 SIZE SPF INTERVAL Opn/Sqz DATE At,'VA",itt• Vilvigee&W‘11'4• 'N MID — 17545' 2-7/8" 6 12830-12930 0 12/23/11 2-7/8" 6 12980-13200 0 12/23/11 2-7/8" 6 15250•15450 0 12/23/11 ‘ 2-7/8" 6 15600-15900 0 12/23/11 2-7/8" 6 16050-16400 0 12/23/11 jams. 2-7/8" 6 17180- 17540 0 12/23/11 Asesesim. 4-1/2"LW.,12.6#,L-80 TC-II, —I 17634' `laser .0152 bpf,ID=3.958" goy DATE REV BY COMMENTS DATE REV BY , COMMENTS PRUDHOE BAY UNIT 12/27/11 D-14 ORIGINAL COMPLETION WELL: Z-116 01/07/12 PJC DRLG DRAFT CORRECTIONS PERMIT No:"2111240 01/31/12 MJF/PJC FINAL DRLG CORRECTIONS , API Nb: 50-029-23455-00 ., 02/22/12 SWC/JMEiGLV C/O(02/16/12) , SEC. 19,T11N, R12E,716'FNL&1442'FWL 04/01/12 MSS/PJC GLV C/O(3/29/12) , BP Exploration (Alaska) bp BP Exploration(Alaska)Inc. Attn:Well Integrity Coordinator, PRB-200 Post Office Box 196612 Anchorage,Alaska 99519-6612 May 25, 2012SKAW-1 IVIj V Kt -� 6)17 Mr. Jim Regg jf Alaska Oil and Gas Conservation Commission 333 West 7th Avenue Anchorage, Alaska 99501 Subject: Corrosion Inhibitor Treatments of GPB Z-Pad Dear Mr. Regg, Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB Z- Pad that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, API and PTD numbers, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Gerald Murphy, at 659-5102. Sincerely, Mehreen Vazir BPXA, Well Integrity Coordinator BP Exploration (Alaska ) Inc. Surface Casing by Conductor Annulus Cement,Corrosion inhibitor,Sealant Top-off Report of Sundry Operations(10-404) Z-Pad Date:05/02/2012 Corrosion Initial top of Vol.of cement Final top of Cement top off Corrosion inhibitor/ Well Name PTD# API# cement pumped cement date inhibitor sealant date ft bbls ft na gal Z-01B 2081080 50029218300200 Z-02A 1960430 50029218140100 Z-03 1971310 50029227870000 Z-04A 2042300 50029219900100 Z-05 1900780 50029220560000 Z-06 1880320 50029217980000 Z-07A 1931100 50029220460100 Z-08A 1931280 50029217870100 Z-09A 2081410 50029219670100 Z-10 1891160 50029219860000 Z-11A 2050310 50029220530100 Z-12 1891020 50029219770000 Z-13A 2042030 50029220690100 Z-148 2060990 50029218440200 Z-15 1880880 50029218490000 Z-16 1920120 50029222450000 Z-17 1891390 50029220010000 Z-18 1890960 50029219710000 Z-19A 2061050 50029222510100 Z-20 1881000 50029218590000 Z-21A 2001010 50029219380100 Z-22B 1960350 50029220370200 Z-23B 2041080 50029219500200 Z-24 1890180 50029219170000 Z-25 1881590 50029219020000 Z-26A 2060790 50029219450100 Z-27 1900310 50029220220000 Z-28 1881270 50029218790000 Z-29 1890650 50029219540000 Z-30A 2032190 50029220130100 1-31 1881120 50029218710000 Z-32BL1 1970350 50029219246000 Z-33A 1890050 50029218950100 Z-35 1980930 50029228840000 Z-38 1980600 50029228730000 Z-39A 2042240 50029229950100 140 2111730 50029234620000 1.3 NA 1.3 NA 15.3 4/7/2012 Z-46A 2052030 50029232800100 Z-50 2120010 50029234630000 1.3 NA 1.3 NA 13.6 5/2/2012 Z-65 2110910 50029234510000 1.4 NA 1.4 NA 12.8 4/7/2012 Z-67 2110130 50029234410000 2.8 NA 2.8 NA 34.0 4/8/2012 Z-100 2031710 50029231820000 Z-101 2001620 50029229780000 Z-102 2070500 50029233530000 Z-103 2042290 50029232350000 Z-108 2052010 50029232920000 Z-112 2071720 50029233800000 Z-113 2110840 50029234500000 1.8 NA 1.8 NA 12.8 4/7/2012 1116 _ 2111240 50029234550000_ 3.0 NA 3.0 NA 22.1 4/8/2012 McMains, Stephen E (DOA) From: Lastufka, Joseph N (Northern Solutions) [Joseph.Lastufka@bp.com] Sent: Tuesday, May 22, 2012 2:13 PM To: McMains, Stephen E (DOA) Subject: RE: Z-116 / PTD#211-124 Hi Steve, Please reference the following well: Well Name: Z-116 Permit#: 211-124 API #: 50-029-23455-00-00 This well began Injection on: 5/15/2012 Method of Operations on this date: Water Injection 1 Ir 2V) 2 147 4 o kl CO u � 002, u)q o ."■ » S ■" .° A7 % moo ■ « � o§ \ (5 're Gmw %5000 o C0 \ . s § £ 0 0 $ � . - © S4 Ma2R2 2W t E 40 k E o _ 232 0 . o Lo _ ■ E ° k ° ° ■ 0 agk J . . . . . - - - — 2• m , p00c & 0B ; k ; ■ ■ p = o 4024. 22 } } 222I222 (DU _ __ N - N N —NN_ k o 4)- a 0• E T.T.0 oco 0 O. M � M 0 MX � ■ w ■ -J -Jw. 0 2 o0zz zo z mmo 0° 00 0 b a a 4 0 W zzq§ ) 0 - razz z w oo ›.e >- � 1_ 00 g > re 00000 @m§ w ® A Ao z mmw0 §k0 & §wwwowwE 2 EE ■ 02 =0m20 ■0=024,. Z © ■am _ID1N 0 z _ m ° ioo § , 0, 010°§ §e 2 s ■ 8c0 ° a■ ■ .0404000 , k � 2l-2 -)§ �= c0x0s 79 -, - o Z0) > <x>-Qo0> mmmm0 B tmmmmmmm ■ me ■m ■■mm o ill Wo W § a$ _ wo � 3 . § \\ ors 0© « _ « _ NoN 0n « wm�N « _ ak Coem i� � , � N49N - 9 ■ 9 / .- � 4 _ na § ±3m ab.1111 5 = 4 % "" 0oaoiao � o - Q ■ ZN > k vS E co « t c 2 - ` � • W2 .61 CA ; 22 ■ § / $ a Cop a ■ « E ■ 5c \ STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG la. Well Status: 0 Oil 0 Gas 0 SPLUG 0 Other 0 Abandoned 0 Suspended 1 b. Well Class: 20AAC 25.105 20AAC 25.»0 0 Development 0 Exploratory 0 GINJ 0 WINJ IN WAG ' 0 WDSPL 0 Other No.of Completions One IN Service • 0 Stratigraphic 2. Operator Name: 15.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number: BP Exploration(Alaska) Inc. 12/27/2011 211-124 • 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 10/24/2011 • 50-029-23455-00-00 • 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number: Surface: . 12/17/2011 • Z-116 • 4564' FSL,3511' FEL, SEC. 19,T11 N, R12E, UM 8. KB(ft above MSL): 87.3. 15.Field/Pool(s): Top of Productive Horizon: • 928'FSL, 1697'FWL. SEC.08,T11 N, R12E, UM GL(ft above MSL): - 53.5' • Prudhoe Bay Field/Borealis Pool Total Depth: 9.Plug Back Depth(MD+TVD): 5135' FSL, 1007' FEL, SEC.07,T11 N, R12E, UM 17545' 6872' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation: Surface: x- 599163 ' y- 5959360 • Zone- ASP4 • 17650' 6883' ADL 028262&047450 TPI: x- 604250 y- 5966353 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 601475 y- 5970523 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 1741' 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/Azimuthal Density Caliper/CBL 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" 129.5# X-65 .Surface 80' Surface 80' 42" 260 sx Arcticset(Approx.) 13-3/8" 68# L-80 Surface 3312' Surface 2399' 16" 2374 sx DeeDCrete.484 sx Class'G' 9-5/8" 40# L-80 3161' 6345' 2353' 3472' 12-1/4" 1356 sx Class'G' 7" 26# L-80 Surface 12502' Surface 6751' 8-3/4" 540 sx LiteCrete. 101 sx Class'G' 4-1/2" 12.6# L-80 12315' 17634' 6633' 6881' 6-1/8" 622 sx Class'G' 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/TVD) (MD+TVD of Top&Bottom;Perforation Size and Number): 2-7/8"Diameter,6 spf 4-1/2", 12.6#L-80 12322' 12194'/6554' MD TVD MD ND 12830'-12930' 6811'-6804' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. 15250'-15450' 6831'-6834' 15250'-15450' 6831'-6834' E Ct t � DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED ® a1 15600'-15900' 6833'-6799' �1 16050'-16400' 6793'-6807' 2000' Freeze Protected w/77 Bbls of Diesel 17180'-17540' 6836'-6871' JAN 2 C01SS10n ks 1) d1" Gas C0 • A!>�1 27. TM' PRODUCTION TEST Date First Production: Method of Operation(Flowing,Gas Lift,etc.): Not on Production Yet N/A Date of Test: Hours Tested: Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Test Period Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 24-Hour Rate 28. CORE DATA Conventional Core(s)Acquired? 0 Yes ®No . Sidewall Core(s)Acquired? 0 Yes ®No If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and presence of oil,gas or water (submit separate sheets with this form,if needed). Submit detailed descriptions,core chips,photographs and laboratory analytical results per 20 AAC 250.071. None j RBDAAS JAN 6 1012V__ Form 10-407 Revised 009 CONTINUED ON REVERSE f f 3 ii.. Su)frit9rAginal Only 29. GEOLOGIC MARKERS(List all formations and markers encountered): 30. FORMATION TESTS NAME MD TVD Well Tested? 0 Yes ®No • Permafrost Top If yes,list intervals and formations tested,briefly summarizing test Permafrost Base 2043' 1828' results. Attach separate sheets to this form,if needed,and submit detailed test information per 20 AAC 25.071. Top Ugnu 5753' 3249' None Top Schrader Bluff N Sands 9198' 4530' Top Schrader Bluff 0 Sands 9589' 4709' Base Schrader Bluff/Top Colville 10190' 5079' Top HRZ 12169' 6537' Top Kalubik 12463' 6726' Top Kuparuk C 12500' 6749' Formation at Total Depth(Name): • Kuparuk C 12500' 6749' 31.List of Attachments: Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys 32. I hereby certify that t egoing's rue i rrect to the best of my knowledge. Signed: Joe Lastu , Title: Drilling Technologist Date: 1/24' l Z-116 211-124 Prepared By Name/Number. Joe Lastufka,564-4091 Well Number Permit No./Approval No. Drilling Engineer: Abby Warren, 564-5720 INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item 1 a: Classification of Service Wells: Gas Injection,Water Injection,Water-Alternating-Gas Injection,Salt Water Disposal,Water Supply for Injection, Observation,or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI(Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits(ex: 50-029-20123-00-00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval(multiple completion),so state in item 1,and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing,Gas Lift,Rod Pump,Hydraulic Pump,Submersible,Water Injection,Gas Injection,Shut-In,or Other(explain). Item 28: Provide a listing of intervals cored and the corresponding formations,and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation,and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 12/2009 Submit Original Only TREE= CW WELLHEAD= FMC SAF, .DOTES: WELL ANGLE>70°@ 3895' ACTUATOR= LEO RiC DRAFT Z-1 1 6 ORIG. KB. ELEV= 87.3' ORIG. BF.ELEV= 52.34' pKOP= 164' J Max Angle= 98° @ 15862' 20"CONDUCTOR, I 115' I 2035' —14-1/2"HES X NIP, ID=3.813" Datum MD= 12401' 129.5#,X-65, Datum TVD= 6600.SS ID=18.770" 0 I— 3161' 113-3/8"X 9-5/8"ZXPN LTP,FLEX LOCK HGR& w/9-1/2"PBR,ID=8.83" 13-3/8"CSG,68#,L-80 BTC, ID=12.415" — 3312' , 9-5/8"CSG,40#, L-80 BTC, ID=8.835" —I 6345' IIL GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 3 6052 3361 68 KBG2 DCK-2 BEK 0 12/25/11 Minimum ID = 3.725" @ 12309' 2 10500 5301 43 KBG2 DMY BK-5 0 12/25/11 4-1/2" HES XN NIPPLE 1 12097 6489 48 KBG2 DMY BK-5 0 12/25/11 7"CSG,26#,L-80 VAM TOP HC --I 11953' I—>< x XO TO L-80 TC-11 12168' —14-1/2"HES X NIP, ID=3.813" i g _ 12194' —17"X 4-1/2"HES TNT PKR,ID=3.856" 12236' —I4-1/2"HES X NIP, ID=3.813" 12309' —4-1/2"HES XN NIP, ID=3.725" I —I 12315' —17'X 5"BKR ZXP LTP w/11.62'TIEBK, ID=4.39" 4-1/2"TBG, 12.6#,L-80 TCII, 12322' 12322' —14-1/2"WLEG, ID=3.958" .0152 bpf, ID-3.958" 41 I ELMD TT NOT LOGGED � • ♦ •♦� 12338' -17'X 5"BKR HMC HYD LNR HGR,ID=4.36" ♦♦ ►♦♦♦ ♦♦ •►♦♦• 12348' —5"X 4-1/2"XO BUSHING,ID=3.90 • V•4 ' O ►Oi ♦♦ ►♦♦i 7"WHIPSTOCK(11/19/11) — 12501' :♦ ♦. MILLOUT WINDOW(Z-116) 12502'-12534' •• ♦♦♦ moi♦ 7"CSG,26#,L-80 TC-11, .0383 bpf, ID=6.276" 12945' ••♦♦.� ♦� PERFORATION SUMMARY .♦ REF LOG:SLB CCL/GR'IBC ON 12/22/11 . vi44.44V ANGLE AT TOP PERF:98°@ 12830' ......... Note:Refer to Production DB for historical perf data .�.�.�.�.�.�.�.�.1 SIZE SPF INTERVAL I Opn/Sqz DATE .�.�.�.�.�.�.�.�.� ` 2-7/8" 6 � 12830- 12930 ' 0 12/23/11 ���������•• PBTD 17545' 2-7/8" 6 12980- 13200 0 12/23/11 2-7/8" 6 15250- 15450 0 12/23/11 ` 2-7/8" 6 15600- 15900 0 12/23/11 2-7/8" 6 16050- 16400 0 12/23/11 Att.. 2-7/8" 6 17180- 17540 0 12/23/11 .osis***- 4-1/2"LNR, 12.6#,L 80 TC-II, —� 17634' sssss! MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: DATE: Monday,July 29,2013 Jim Regg P.I.Supervisor SUBJECT: Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC Z-116 FROM: PRUDHOE BAY UN BORE Z-116 Petroleum Inspector Src: Operator NON-CONFIDENTIAL Well Name PRUDHOE BAY UN BORE Z-116 API Well Number 50-029-23455-00-00 Inspector Name: Permit Number: 211-124-0 Inspection Date: 3/29/2012 Insp Num: MITOP000004035 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min WellZ-116 Type Inj N TVD 6554 IA 1450 3000 2976 2976 PTD 2111240 !Type Test SPT;Test psi 1638.5 OA 0 0 0 1 0 — - Interval i Other(describe in notes) IPF Pass Tubingl 1500 1850 1850 I 1850 Notes: Initial pre injection MIT-IA Monday,July 29,2013 Page 1 of 1 zit- 12_21 • • 2_\2_G-J Schiumberger RECEIVED Drilling&Measurements !AN 18 2012 MWD/LWD Log Product Delivery AOGCC Customer BP Exploration(Alaska)Inc. Dispatched To: Christine Mahnken Well No Z-116 Date Dispatched: 26-Dec-11 Installation/Rig Doyon 14 Dispatched By: Brian Muzny Data No Of Prints No of CDs Surveys 2 1 Received By: ) 1I !. ��� Please sign and return to: Drilling&Measurements LWD Division 2525 Gambell Street,Suite 400 Anchorage,Alaska 99501 muznyl @slb.com Fax:907-561-8317 LWD Log Delivery V1.0,01/22/2010 SCANNEU s' ,E <<+. • + • m likorijo-Immx.m*semgm'p Lp • 1 T 3 00--0..-44 I ' 5 p n a�o n. o c - " 2 O N N a 3' 1 Y N ID N N 6 o n z m c- m o m 0 N CD 0n.Lo .m m O\ Cr C m <poT to o .. m o D '<o .. b 'o +A+ V WA JW 3 o' N NNNNN ANL'N N+m+J+m N+ W+NL +8Wp0 mVmoA WNNN+ -L- <D mmWOmV V2 2 8 OONN WAmWA 2 2m2 0 OOOmm VmmmW mWO O NOWWN AaOWJJ '.,°44 OLOJNJ A LAJ(AOO O O O O O O OOOOOo 00000 5 99 Z Z 1 o O o N N N m O 0DJLn D o L s m ...0,.3 m O m m L0 t7 0 0 3 II POr Lo No 3 m mmm m N o N O A Act-?,22 W W W W N N m_._._. -�.+- + V O-:.r .71, p y \+ a a•0 a N m J m m O V o 0 0 V m A W o I V O m m V J o A A N m A f J N-. +0 0 0 0 ° N pFj A V m m O O IV <J W GJ J m LWO+O O 07 J T N O A M m Ot T Co N N N IV m m J 0)N N N+P O) IV N+b O^O O W C N mmocoo o m.co A(OLO A N LOOmJ AmNOA MOM A N W mm V W mo A00r 2 C LND m o t O 0, D N N O .)22 N*s+ N D N N�' _.OD co N OO J o 0 0 0 0 0 0 o A A A A W W N N + +N N N N N N 218-'222 N N N N W W A LT N 3 N o N V pp O W V AAW W N OmJo A NtO A(OA mJ J(ON N-+OON O-+N W LO OO W+W W JA00 o '-t0 O +(O LD fU '!A IV N I3 N OL IV O) N O+ O7 07 N D7 07 V o O+m J J N m O O o C N N J+o N m N W m N W m N O N m N m N m m o V N m m 0 m o m W A O m A 0 0 N O 2 m C NJ C Lmn Ln J m N D • N N N N m O O(.m m J NJ o o A 8,)228= NNN+ O m m V 2E8141'4 m o A W NJ-"- - -' _ 1 ~ m 82,3;2,..o ...m22:1 OOO N LWO.NJ.p N 0)V 2-L W W N,,m -.N M LNT A LWO W 8 A N 8882 J ..14L66:, OAi A W J O O ALNON ALWT ON NSA 08J AAS LmJO W W m 2222J NLWT JOO m®wmm LOOOOO�N N J N NNNNN NJ NJ m V moo t'4`222 +2220 mNLmDLoOOoi� 2222 Nm 88,m 0 m N+p m A ,A m N m O W m m+ W mmALD D7 V Nmm A OAAN W o O V(ON mN W 4]+ mOAN(O m000A W A W W O 1 OJ m O+m m A W V V +V A W LO W T t t<O N m '.2.811988 T T O 8 8 IU m i0 LO 8 t0 O O O-ig P.O ALON ALT ONNm A mJ A W O W mm W W mN J W o V O W mm W mm mO O O...O -1 r 1 g 2 E o;1 PE M 1 1«m N 0 0 o m Lo 0 0 0 «m e c < dg-az12� gq g°'',- P,. 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A J O A A V V V 5;8 -15°V( N V tA0 tA0(AO AAAAAAAAA AAAN AA ff f o0M JWmm mm03 mm mm 0,0,m , N WW WNNN NNN-, CO NAOIJ�A �OmmV-&fm0 CD O O0 A mV — N . (Jl N N W TVNmA OOWTW 36 O_ 0) BP AMERICA Leak-Off Test Summary Well Name: Z-116 Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) (ppg) 11/01/11 LOT 3,341.50 2,403.50 9.00 600.00 1,724.00 13.80 11/07/11 LOT 6,367.00 3,471.00 9.00 660.00 2,285.00 12.66 11/19/11 LOT 12,502.00 6,776.21 9.80 2,170.00 5,619.70 15.96 Page 1 of 1 North America -ALASKA- BP Page 1 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01OHL-C: (6,644,000.00) ' Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10/23/2011 06:00 - 07:30 1.50 MOB P PRE SKID RIG FLOOR INTO THE MOVE POSITION. 07:30 - 11:00 3.50 MOB P PRE MOVE RIG OFF OF Z-65 AND OVER TO Z-1161 11:00 - 12:00 1.00 MOB P PRE SPOT MATTS FROM Z-65 OVER TO Z-1161. 12:00 - 16:00 4.00 MOB P PRE PICK UP SURFACE BAG AND CELLAR HEATER.SPOT RIG OVER WELL 16:00 - 18:00 2.00 MOB P PRE PICK UP DIVERTER KNIVE VAVE AND MAKE SURE DIVERTER WILL WORK WHERE RIG IS POSITIONED. TAKE ON DRILLPLEX MUD FOR SURFACE HOLE RIG ACCEPTED 10/23/2011 @ 17:00 18:00 - 19:00 1.00 MOB P PRE SKID RIG FLOOR INTO DRILLING POSITION. 19:00 - 00:00 5.00 MOB P PRE MAKE UP SURFACE ANNULAR TO DIVERTER, SPOT ROCK WASHER,MWD GEO SHACK, MUD SHACK, ENVIRO SHACK,AND FUEL TANK. PICK UP SURFACE RISER AND INSTALL FLOW LINE,4"VALVES IN CELLAR, AND CLEAR THE RIG FLOOR OF CROSSOVERS. 10/24/2011 00:00 - 06:00 6.00 MOB P PRE FINISH NU RISER AND INSTALLING DIVERTER LINE PICK UP 4-1/2"IF LIFTING TOOLS RIG UP LINES UNDER RIG FLOOR HOOK UP TOP DRIVE AND INSTALL BALES AND ELEVATORS HOOK UP TIGER TANK AND PRE-LOAD HOPPER ROOM WITH MUD PRODUCT LOAD AND STRAP 96 JOINTS NEW 5" DRILLPIPE AND 12 JTS 5"HWDP 06:00 - 12:30 6.50 MOB P_ PRE BUILD 5"DRILLPIPE STANDS AND RACK BACK IN DERICK -PRE SPUD WITH B-CREW IN PRE TOUR MEETING 12:30 - 13:00 0.50 BOPSUR P PRE CONDUCT DIVERTER TEST -KNIFE VALVE OPENED IN 1 SECONDS -ANNULAR FULLY CLOSED AROUND 5"DP IN 21 SECONDS -TEST WITNESSED BY DOYON TOOLPUSHER BOBBY INGRAM, BP WSL JOEY LEBLANC AND JACOB THOMPSON,AND AOGCC INSPECTOR BOB NOBLE 13:00 - 13:30 0.50 MOB P PRE CONTINUE TO BUILD 5"DRILLPIPE STANDS AND RACK BACK IN DERRICK 13:30 - 14:00 0.50 MOB P PRE HOLD H2S RIG EVAC DRILL FUNCTION TEST RIG EMERGENCY SHUT-DOWN SYSTEM HOLD AAR POST-DRILL 14:00 - 14:30 0.50 MOB P PRE FINISH BUILDING 5"DRILLPIPE STANDS AND RACK BACK IN DERRICK 14:30 - 15:00 0.50 MOB P PRE BUILD 5"HWDP STANDS AND RACK BACK IN DERRICK 15:00 - 15:30 0.50 DRILL P SURF MOBILIZE BHA COMPONENTS TO RIG FLOOR Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 2 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:30 - 16:00 0.50 DRILL P SURF HOLD PJSM WITH HALLIBURTON WIRELINE AND GYRODATA CREWS ON PICKING UP AND RUNNING GYRO 16:00 - 17:00 1.00 DRILL P SURF BEGIN TO BUILD BHA#1 PER SCHLUMBERGER DD AS FOLLOWS: -16"HUGHES MX-1 TRIGONE BIT W/3 20/32" AND 1 16/32"JETS -9-5/8"SP MUD MOTOR W/2.38 DEGREE MOTOR BEND --15.875"STABILIZER ON ASSEMBLY --NON-PORTED FLOAT IN ASSEMBLY -NON-MAG UBHO -NON-MAG PONY COLLAR -NON-MAG 6-5/8"REG PIN X 4-1/2"IF BOX BOTTLENECK CROSSOVER TOTAL BHA LENGTH: 50.34' 17:00 - 18:00 1.00 DRILL P SURF FILL HOLE WITH DRILLPLEX AND CHECK DIVERTER AND FLOWLINE FOR LEAKS DRILL OUT TO BOTTOM OF CONDUCTOR AT 115' PICK UP AND MAKE UP NON-MAG INTEGRAL BIT STABILIZER ABOVE PONY COLLAR 18:00 - 19:00 1.00 DRILL P SURF RIG UP HALLIBURTON WIRELINE AND GYRODATA GYRO TOOLS 19:00 - 00:00 5.00 DRILL P SURF DRILL OUT OF CONDUCTOR AT 115'TO 332' MD -PUW 75K,SOW 70K -400 GPM,460 PSI ON,450 PSI OFF -15K WOB -8.7 PPG MUD WT IN AND OUT -PERFORM GYRO SURVEYS EVERY 30' SWITCH TO SURVEYS EVERY 60'AT 332'AND DRILL TO 423' -AST 1.61,ART 0.17,ADT 1.78 10/25/2011 00:00 - 04:00 4.00 DRILL P SURF CONTINUE TO DRILL 16"SURFACE HOLE FROM 423'TO 613'. -PUW 75K,SOW 75K, RT 75K -450 GPM,440 PSI ON,680 PSI OFF -40 RPM,TQ 5K ON,1K OFF -20K WOB -MUD WT IN AND OUT 8.8 PPG BEGIN TRIPPING OUT OF THE HOLE TO DIAL DOWN THE MOTOR. ART 0.21,AST 1.09,ADT 1.30 04:00 - 05:00 1.00 DRILL P SURF PULL OUT OF HOLE ON ELEVATORS FROM 613'TO SURFACE 05:00 - 07:00 2.00 DRILL P SURF INSPECT BIT -BIT GRADE 1-1-NO-A-E-I-NO-BHA DIAL DOWN MOTOR BEND FROM 2.38 DEGREES TO 2.12 DEGREES Printed 1/16/2012 4:09:34PM North America -ALASKA- BP " Page 3 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01OHL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:00 - 10:00 3.00 DRILL P SURF PICKUP REMAINING MWD TOOLS AND CONFIGURE AS BHA#2 PER SCHLUMBERGER DD AS FOLLOWS: -16"HUGHES MX-1 TRIGONE BIT W/3 20/32" AND 1 16/32"JETS --RE-RUN FROM BHA#1 -9-5/8"SP MUD MOTOR W/2.12 DEGREE MOTOR BEND --15.875"STABILIZER ON ASSEMBLY --NON-PORTED FLOAT IN ASSEMBLY -NON-MAG PONY COLLAR -NON-MAG 16"INTEGRAL BIT STABILIZER -ARCS -POWERPULSE MWD -NON-MAG UBHO -NON-MAG 16"INTEGRAL BIT STABILIZER -NON-MAG 6-5/8"REG PIN X 4-1/2"IF BOX BOTTLENECK CROSSOVER -2X NON-MAG 6-3/4"DRILL COLLARS -NON-MAG 8-3/4"INTEGRAL BIT STABILIZER -NON-MAG 6-3/4"DRILL COLLAR -SAVER/FLOAT SUB -1 5"HWDP -SMITH 6-1/2"HYDRA-JARS 13 JTS 5"HWDP TOTAL BHA LENGTH:673.03' 10:00 - 12:00 2.00 DRILL P SURF DRILL AHEAD FROM 613'TO 697'MD -PICK UP REMAINING HWDP TO COMPLETE BHA AT 673' -PUW 95K,SOW 90K, RT 95K -450 GPM,950 PSI ON,750 PSI OFF -40 RPM,TQ 5K ON,3K OFF -20K WOB -MUD WT IN AND OUT 9.0 PPG ART 0.34,AST 1.15,ADT 1.49 12:00 - 17:30 5.50 DRILL P SURF DRILL AHEAD FROM 697'TO 1,051'MD -PUW 100K,SOW 95K, RT 97K -500 GPM,1,000 PSI ON,890 PSI OFF -40 RPM,TQ 7K ON,3K OFF -20K WOB MUD WT IN 9.0 PPG,MUD WT OUT 9.1 PPG -PERFORM CHECK SHOT SURVEYS WITH GYRO UNTIL MWD SURVEYS ARE CEAN 17:30 - 18:00 0.50 DRILL P SURF PERFORM MULTI-SHOT SURVEY WITH GYRO RIG DOWN GYRODATA AND HALLIBURTON WIRELINE 18:00 - 00:00 6.00 DRILL P SURF DRILL AHEAD FROM 1,051'TO 1,336'MD -PUW 110K,SOW 98K, RT 98K -500 GPM,1,140 PSI ON,920 PSI OFF -40 RPM,TQ 8K ON,3K OFF -20K WOB -MUD WT IN 9.1 PPG,MUD WT OUT 9.3 PPG ART 1.71,AST 7.50,ADT 9.21 ADT FOR LAST 24 HRS: 12.00 Printed 1/16/2012 4.09:34PM North America -ALASKA- BP Page 4 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10/26/2011 00:00 - 12:00 12.00 DRILL P SURF DRILL AHEAD FROM 1,336'TO 1,798'MD -PUW 118K,SOW 100K, RT 105K -500 GPM,1,050 PSI ON,810 PSI OFF -40 RPM,TQ 10K ON,5K OFF -35K WOB -MUD WT IN 9.3 PPG,MUD WT OUT 9.4 PPG ART 0.67 AST 5.34 ADT 6.01 12:00 - 23:30 11.50 DRILL P SURF DRILL AHEAD FROM 1,798'TO 2,413'MD -PUW 130K,SOW 100K, RT 113K -500 GPM,940 PSI ON,840 PSI OFF -40 RPM,TQ 10K ON,5K OFF -30K WOB -MUD WT IN 9.3 PPG,MUD WT OUT 9.4 PPG ART 1.40 AST 6.16 ADT 7.56 23:30 - 00:00 0.50 DRILL N DPRB 2,412.50 SURF UNABLE TO BUILD ANGLE CONSULT WITH DIRECTIONAL DRILLERS AND ANCHORAGE ODE DECISION TO PULL BHA, DIAL UP MOTOR AND CHANGE BIT FLOW CHECK WELL -NO FLOW PULL STAND AND OBSERVE WELL SWABBING RUN BACK TO BOTTOM AND BACKREAM OUT OF HOLE FROM 2,413'TO 2,378'MD -450 GPM,890 PSI -40 RPM,TQ 8K 10/27/2011 00:00 - 03:30 3.50 DRILL N DPRB SURF CONTINUE BACKREAMING OUT OF HOLE FROM 2,378'TO 673'MD -450 GPM,850 PSI -40 RPM,TQ 8K -DECREASE PULLING SPEED AT 1,530'DUE TO SHOCKS OBSERVED BY MWD FLOW CHECK WELL -NO FLOW BACKREAM 5"HWDP FROM 673'TO 278'MD -420 GPM,610 PSI -40 RPM,TQ 3K 03:30 - 04:00 0.50 DRILL N DPRB SURF RACK BACK DRILL COLLAR STAND LAY DOWN MWD TOOLS PULL MOTOR AND BIT TO FLOOR -MOTOR STABILIZER 1/2"UNDER GAUGE -BIT GRADE: 1-3-RG-G-E-I-WT-BHA 04:00 - 07:30 3.50 DRILL N DPRB SURF MAKE UP NEW 16"BIT TO NEW MOTOR -MOTOR BEND 2.38 DEGREES 07:30 - 08:30 1.00 DRILL N DPRB SURF UPLOAD MWD TOOLS AND DOWNLOAD ARC8 08:30 - 11:30 3.00 DRILL N SFAL SURF DIFFICULTIES DOWNLOADING MWD DATA Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 5 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 12:00 0.50 DRILL N DPRB SURF FINISH ASSEMBLING BHA PER SCHLUMBERGER DIRECTIONAL AS FOLLOWS: -16"HUGHES MX-1 TRIGONE BIT W/3 X 20/32"AND 1 16/32"NOZZLES -MUD MOTOR WITH 2.38 DEGREE BEND --15.875"STABILIZER ON ASSEMBLY --NON-PORTED FLOAT IN ASSEMBLY -NON-MAG PONY COLLAR -NON-MAG 16"INTEGRAL BIT STABILIZER -ARC8 -POWERPULSE MWD -NON-MAG UBHO -NON-MAG 16"INTEGRAL BIT STABILIZER -NON-MAG 6-5/8"REG PIN X 4-1/2"IF BOX BOTTLENECK CROSSOVER -2X NON-MAG 6-3/4"DRILL COLLARS -NON-MAG 8-3/4"INTEGRAL BIT STABILIZER -NON-MAG 6-3/4"DRILL COLLAR -SAVER/FLOAT SUB -1 5"HWDP -SMITH 6-1/2"HYDRA-JARS -13JTS5"HWDP TOTAL BHA LENGTH:674.08' 12:00 - 14:30 2.50 DRILL N DPRB SURF RIH ON 5"DRILLPIPE FROM TO 1,200'MD -TAG UP ON OBSTRUCTION AT 1,200'MD ORIENT HIGH-SIDE AND WORK THROUGH OBSTRUCTION • CONTINUE TO RIH FROM 1,200'TO 2,100'MD -TAG UP ON OBSTRUCTION AT 2,100'MD ORIENT HIGH-SIDE AND WORK THROUGH OBSTRUCTION CONTINUE TO RIH FROM 2,100'TO 2,397'MD ORIENT HIGH-SIDE AND WASH DOWN TO 2,413'MD ON FIRST BOTTOMS-UP VOLUME, HOLE UNLOADED CUTTINGS AND WOOD -CLEANED UP AFTER BOTTOMS-UP 14:30 - 21:30 7.00 DRILL P SURF DRILL AHEAD FROM 2,413'TO 2,756'MD -PUW 130K,SOW 100K, ROT 113K -500 GPM,940 PSI ON,840 PSI OFF -40 RPM,TQ 10K ON,5K OFF -30K WOB -MUD WT IN 9.3 PPG,MUD WT OUT 9.5 PPG ART 0.61 AST 2.68 ADT 3.29 21:30 - 22:30 1.00 DRILL N SFAL SURF MWD TROUBLESHOOTING SURFACE EQUIPMENT -SWAP FROM PRIMARY COMPUTER TO BACKUP 22:30 - 00:00 1.50 DRILL P SURF OBTAIN SURVEY AT BOTTOM OF STAND WIPE UPPER END OF STAND TO KNOCK DOWN DOGLEG Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 6 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10/28/2011 00:00 - 12:00 12.00 DRILL P SURF DRILL AHEAD FROM 2,756'TO 3,136'MD -PUW 127K,SOW 95K,ROT 117K -500 GPM,1,050 PSI ON,950 PSI OFF -40 RPM,TQ 12K ON,10K OFF -25K WOB -MUD WT IN 9.1 PPG,MUD WT OUT 9.6 PPG ART 1.44,AST 5.62,ADT 7.06 HYDRATES OBSERVED AT 2,896'MD,2,276' TVD 12:00 - 19:30 7.50 DRILL P SURF DRILL AHEAD FROM 2,756'TO 3,322'MD -PUW 125K,SOW 95K, ROT 110K -500 GPM,1,210 PSI ON,1,050 PSI OFF -40 RPM,TQ 10K ON,18K OFF -25K WOB -MUD WT IN 9.6 PPG,MUD WT OUT 9.8 PPG ART 0.83,AST 1.48,ADT 2.31 HYDRATES OBSERVED AT 3,200'MD,2,365' TVD 19:30 - 21:00 1.50 DRILL P SURF CIRCULATE BOTTOMS-UP -CONDITION MUD FOR TRIP OUT -500 GPM,1,010 PSI -40 RPM,TQ 8K -MUD WT IN 9.5 PPG,MUD WT OUT 9.7 PPG LAY DOWN SINGLE JOINT TO STAGGER BREAKS ON NEW DRILLPIPE 21:00 - 00:00 3.00 DRILL P SURF BEGIN TRIP OUT FROM 3,322'MD -WELL SWABBING RIH TO TD AND BACKREAM OUT OF HOLE FROM 3,322'TO 2,474'MD -500 GPM,1,100 PSI -40 RPM,TQ 8-10K -VERY THICK, DEHYDRATED MUD COMING BACK AT 2,550'MD -BACK OFF FLOW RATE FROM 500 GPM, 1,100 PSI TO 350 GPM,700 PSI TO HANDLE RETURNS IN MUD PITS AND ROCK WASHER -MUD WT IN 9.5 PPG,MUD WT OUT 9.8 PPG 10/29/2011 00:00 - 04:30 4.50 DRILL P SURF CONTINUE TO BACKREAM OOH FROM 2,474' TO 674'MD -350 GPM,600 PSI -40 RPM,TQ 5-7K -MUD WT IN 9.5 PPG,MUD WT OUT 9.7 PPG -INCREASE FLOW RATE TO 500 GPM,1,040 PSI AFTER MUD CONDITIONED -WORK THROUGH TIGHT SPOT AT 2,300'MD (HIGHLAND FAULT CROSSING) -WORK THROUGH TIGHT SPOT AT 2,040'MD (BASE PERMAFROST) -INCREASE IN SAND OBSERVED AT SHAKERS AT 1,495'MD -SLOW FLOW RATE TO 450 GPM,550 PSI AT 1,020'MD DUE TO CUTTINGS LOAD SEEN AT SHAKERS -CONDITION MUD DURING BACKREAM TRIP --FINAL MUD WT IN 9.4 PPG,MUD WT OUT 9.6 PPG Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 7 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 06:00 1.50 DRILL P SURF RACK BACK 5"HWDP IN DERRICK RACK BACK 6-3/4"NON-MAG DRILL COLLARS IN DERRICK LAY DOWN BHA#3 -STABILIZER BLADES PACKED OFF WITH CLAY BIT GRADE: 1-1-WT-G-E-I-RG-TD 06:00 - 12:00 6.00 CASING P SURF CLEAR RIG FLOOR OF SURFACE BHA TOOLS MOBILIZE CASING RUNNING EQUIPMENT TO RIG FLOOR PERFORM DUMMY RUN WITH HANGER AND LANDING JOINT -MARK LANDING JOINT AT RIG FLOOR HEIGHT 12:00 - 13:00 1.00 CASING P SURF RIG UP TO RUN 13-3/8"SURFACE CASING 13:00 - 23:00 10.00 CASING P SURF RUN 13-3/8",68#, L-80, BTC SURFACE CASING -USE BEST-OF-LIFE 2000 NM THREAD DOPE BAKERLOK SHOETRACK -RUN BOW SPRING CENTRALIZERS ON SHOETRACK AS FOLLOWS: --ONE CENTRALIZER 10'FROM FLOAT SHOE --ONE ABOVE FLOAT COLLAR -CHECK FLOATS AFTER SHOETRACK IS MADE UP --FLOATS HOLDING -FILL PIPE EVERY JOINT -BREAK CIRCULATION EVERY 10 JOINTS -LAY DOWN JOINT#55 DUE TO BAD PIN --REPLACE COUPLING ON JOINT#54 -INSTALL BOW SPRING CENTRALIZERS CENTRALIZERS OVER COUPLINGS 56 AND 57 (ABOVE SV6 WHEN LANDED) 23:00 - 00:00 1.00 CASING P SURF PICK UP HANGER AND LANDING JOINT CONFIRM PIPE COUNT IN PIPE SHED AND ON LOCATION LAND CASING ON LANDING RING -PUW 245K,SOW 140K RIG DOWN POWER TONGS AND SCAFFOLDING RIG UP CEMENT HEAD AND CEMENT LINE TO LANDING JOINT 10/30/2011 00:00 - 03:00 3.00 CEMT P SURF CIRCULATE AND CONDITION MUD FOR CEMENT JOB -BREAK CIRCULATION AT 3 BPM -STAGE UP PUMPS TO 8 BPM,330 PSI -PUMP SURFACE-TO-SURFACE VOLUME TO CONDITION DRILLPLEX FOR CEMENT Printed 1/16/2012 4:09:34PM ASK, BP fl,Pa Operation S ary Repqrt ,, , Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 .X3-01 OHL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 08:00 5.00 CEMT P SURF CEMENT 13-3/8"SURFACE CASING IN PLACE WITH RECIPROCATION AS FOLLOWS: 03:02 BATCH MIX 10.0 PPG MUD PUSH II 03:07 FINISH CIRCULATING WITH RIG.LINE UP TO SCHLUMBERGER CEMENTERS 03:08 PUMP 5 BBLS 10.0 PPG MUDPUSH II TO FLOOD LINES TO CEMENT HEAD 03:10 TEST CEMENT TRUCK KICKOUTS AT 900 PSI. INCREASE AND TEST LINES TO 2,900 PSI 03:14 PUMP 79 BBLS 10.0 PPG MUDPUSH II (84 BBLS TOTAL) -10.0 PPG MUDPUSH II 5.5 BPM,80 PSI TREATING PRESSURE 03:29 FINISH 10.0 PPG MUDPUSH II 03:30 START BATCH MIXING LITECRETE LEAD CEMENT 03:31 DROP BOTTOM PLUG.POSITIVE INDICATION PLUG LEFT CEMENT HEAD 03:34 LITECRETE LEAD CEMENT TO WEIGHT 03:35 PUMP 795.0 BBL 11.0 PPG DEEPCRETE LEAD CMT @ 7 BPM -11.0 PPG DEEPCRETE LEAD -6.9 BPM,120 PSI TREATING PRESSURE 04:40 LAND CASING HANGER ON LANDING RING AS MUD PUSH II EXITS SHOE 04:42 RESUME RECIPROCATING CASING 04:52 LAND CASING HANGER ON LANDING RING FOR LEAD CEMENT EXITING SHOE 01:53 BOTTOM PLUG LANDED AND SHEARED DISK AT 720 PSI 05:40 FINISHED WITH LEAD CEMENT 05:41 BATCH MIX 15.8 PPG TAIL CEMENT 05:49 TAIL CEMENT TO WEIGHT 05:50 SWAP TO TAIL CEMENT PUMP 98.0 BBLS 15.8 PPG CLASS G TAIL CEMENT AWAY AT 4 BPM -15.8 PPG CLASS G -4.0 BPM,100 PSI TREATING PRESSURE 06:11 STOP PUMPING CEMENT 06:12 DROP TOP PLUG.POSITIVE INDICATION PLUG LEFT CEMENT HEAD 06:13 SCHLUMBERGER CEMENTERS WASH UP ON TOP OF PLUG WITH 10 BBLS WATER FOLLOWED BY DISPLACEMENT WITH SCHLUMBERGER -DISPLACE WITH 8.8 PPG BRINE -PUMP 6.5 BPM,350 PSI -CEMENT TO SURFACE 300 BBLS INTO DISPLACEMENT 07:38 STAGE PUMP RATE DOWN TO 2 BPM, 590 PSI FOR PLUG BUMP 07:42 BUMP PLUG @ 484 BBLS WITH 1,500 PSI -CADE PRESSURE 430 PSI --PRESSURES NOT WITHIN 15% -INCREASE PRESSURE TO 1,500 PSI -HOLD FOR 3 MINUTES 07:45 BLEED OFF PRESSURE AND CHECK FLOATS, FLOATS HOLDING Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 9 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) CEMENT IN PLACE AT 07:42 HRS LEAD CEMENT REACHES 500 PSI COMPRESSIVE STRENGTH IN 25 HRS 44.5 MIN TAIL CEMENT REACHES 1,000 PSI COMPRESSIVE STRENGTH IN 22 HRS 24.5 MIN CEMENT PUMPED: -2,374 SX OF 11.0 PPG DEEPCRETE LEAD AT 1.89 CUFT/SX -474 SX OF 15.8 PPG G-BLEND TAIL AT 1.16 CUFT/SX -EST.TOC=SURFACE _„1SQ BBLS CEMENT BACK TO SURFACE 08:00 - 12:00 4.00 CEMT P SURF RIG DOWN SURFACE CEMENTING EQUIPMENT FLUSH CEMENT OUT OF ANNULAR AND DIVERTER -FUNCTION ANNULAR MULTIPLE TIMES AFTER FLUSH BACK OUT LANDING JOINT FROM HANGER AND LAY DOWN SAME FUNCTION AND FLUSH ANNULAR AGAIN AFTER LD LANDING JOINT LAY DOWN SURFACE CASING AND CEMENTING EQUIPMENT 12:00 - 14:30 2.50 CASING P SURF BLOW DOWN LINES RIG DOWN SURFACE RISER AND KNIFE VALVE STAND BACK SURFACE STACK IN CELLAR 14:30 - 17:30 3.00 WHSUR P SURF NIPPLE UP FMC GEN 5 BIG-BORE WELLHEAD PRESSURE TEST VOID PER FMC FIELD TECH -1,000 PSI FOR 15 MINUTES PER FMC MANUFACTURER'S RECOMMENDATION 17:30 - 23:00 5.50 BOPSUR P SURF NIPPLE UP BOP STACK ON WELLHEAD CHANGE OUT SPACER SPOOL ON CHOKE HOSE INSTALL DOUBLE VALVES ON OUTER ANNULUS VALVE AND INNER ANNULUS WORKING VALVE 23:00 - 00:00 1.00 BOPSUR N WAIT SURF DERRICK LIGHT LENS FRAME DISCOVERED ON RIG FLOOR SHUT DOWN OPERATION,SECURE RIG FLOOR AND PERFORM DERRICK INSPECTION TO FIND DAMAGED LIGHT. 10/31/2011 00:00 - 02:00 2.00 BOPSUR N WAIT SURF CONTINUE DERRICK INSPECTION -FIND DAMAGED LIGHT DISCONNECT DAMAGED LIGHT AND LOWER TO RIG FLOOR 02:00 - 05:00 3.00 BOPSUR P SURF CONTINUE TO NIPPLE UP BOPE INSTALL RISER AND FLOWLINE HOOK UP HOLE-FILL AND BLEEDER LINES TO RISER HOLD D4 ACCUMULATOR DRILL -61 STROKES TO FILL GAS BUSTER 05:00 - 05:30 0.50 BOPSUR P SURF RIG UP TO PERFORM BOPE TEST Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 10 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:30 11:00 5.50 BOPSUR P SURF TEST BOPE PER BP/AOGCC REGULATIONS -ALL TESTS CHARTED -5 MINUTES EACH TEST -TEST WITH 5"TEST JOINT -TEST ANNULAR PREVENTOR TO 250 PSI LOW,3,500 PSI HIGH -TEST REMAINING BOP EQUIPMENT TO 250 PSI LOW,4,000 PSI HIGH TEST WITNESSED BY DOYON TOOLPUSHER BOBBY INGRAM AND BP WSL BLAIR NEUFELD AOGCC INSPECTOR JEFF JONES WAIVED WITNESS OF TEST @ 20:00 ON 10/30/2011 11:00 - 12:00 1.00 CASING P SURF RIG DOWN BOPE TEST EQUIPMENT CLOSE BLIND/SHEAR RAMS TEST 13-3/8"SURFACE CASING -250 PSI LOW FOR 5 MINUTES -3,500 PSI FOR 30 MINUTES --10.3 BBLS TO ACHIEVE TEST PRESSURE --LOST 40 PSI IN FIRST 15 MINUTES --LOST 10 PSI IN SECOND 15 MINUTES --RECOVERED 10 BBLS AFTER BLEEDING OFF TEST PRESSURE 12:00 - 13:00 1.00 CASING P SURF RIG DOWN TEST EQUIPMENT 13:00 - 13:30 0.50 CASING P SURF DRAIN STACK AND INSTALL WEAR RING 13:30 - 14:30 1.00 CASING P SURF ADJUST BOP STACK AND RISER ALIGNMENT LUBRICATE RIG 14:30 - 15:00 0.50 CASING P SURF MOBILIZE BHA COMPONENTS TO RIG FLOOR 15:00 - 20:00 5.00 CASING P SURF PICK UP MULESHOE SINGLE IN HOLE WITH NEW 5"DRILLPIPE FROM PIPE SHED TO 1,800'MD HELD D1 KICK WHILE TRIPPING DRILL 20:00 - 20:30 0.50 CASING P SURF MOVE HWDP STANDS FROM OFF-DRILLER'S SIDE TO DRILLER'S SIDE OF DERRICK SIM-OPS:TEST POP-OFFS ON#1 AND#2 MUD PUMPS 20:30 - 21:30 1.00 CASING P SURF POOH WITH 5"DRILLPIPE FROM 1,800'TO SURFACE -RACK BACK STANDS IN DERRICK 21:30 - 00:00 2.50 CASING P SURF MAKE UP BHA#4 PER SCHLUMBERGER DD AS FOLLOWS: -12-1/4"HUGHES VM-3 TRIGONE BIT W/3 X 18/32"AND 1/16"JETS -9-5/8"MUD MOTOR WITH 1.50 DEGREE BEND --12-1/8"STABILIZER ON MOTOR -NON-MAG PONY DRILL COLLAR -NON-MAG INTEGRAL BLADE STABILIZER 12-1/4"BLADE OD -ARCS -POWERPULSE MWD -NON-MAG INTEGRAL BLADE STABILIZER 12-1/4"BLADE OD -NON-MAG BOTTLENECK CROSSOVER Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 11 of 62 Operation Summary Report Common Well Name.Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time:10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/1/2011 00:00 - 01:00 1.00 CASING P SURF FINISH BUILDING BHA#4 PER SCHLUMBERGER DD AS FOLLOWS: -2X 6-3/4"NON-MAG DRILL COLLARS NON-MAG INTEGRAL BLADE STABILIZER 8-3/4"BLADE OD -6-3/4"NON-MAG DRILL COLLAR SAVER FLOAT SUB -1 JT 5"HWDP 6-1/2"SMITH HYDRA-JARS 13 JTS 5"HWDP TOTAL BHA LENGTH:665.44' 01:00 - 01:30 0.50 CASING P SURF SINGLE IN HOLE FROM 666'TO 2,085'MD ON 5"DRILLPIPE FROM DERRICK 01:30 - 02:00 0.50 CASING P SURF PERFORM SHALLOW-TEST ON MWD EQUIPMENT -420 GPM,400 PSI 02:00 - 05:00 3.00 CASING P SURF CONTINUE TO SINGLE IN HOLE FROM 2,085' TO 3,032'MD -HOLD UNANNOUNCED KICK WHILE TRIPPING DRILL,CRT=2MIN 05:00 - 07:00 2.00 CASING P SURF SLIP AND CUT DRILLING LINE SERVICE TOP DRIVE AND BLOCKS 07:00 - 09:30 2.50 CASING P SURF WASH DOWN TO TOP OF FLOAT COLLAR© 3,230' DRILL OUT FLOAT COLLAR AND CEMENT TO 10'ABOVE SHOE @ 3,300' -PUW 125K,SOW 95K,ROT 110K -GPM 400,PSI ON 610,PSI OFF 560,RPM 40 -TQ ON 10K,TQ OFF 8K,WOB 15K 09:30 - 11:00 1.50 CASING P SURF DISPLACE WELL TO 9.0 PPG LSND MUD -GPM 400, PSI 480 11:00 - 12:00 1.00 CASING P SURF CONTINUE TO DRILL OUT CEMENT,FLOAT SHOE,20'OF NEW HOLE TO 3,342' -PUW 125K,SOW 95K,ROT 110K -GPM 400,PSI ON 610,PSI OFF 560,RPM 40 -TQ ON 10K,TQ OFF 8K,WOB 15K MAD PASS FROM 3,222'TO 3,300' SPR AT 3,300'MD 2,390'TVD 9.0 MW @ 11:30 PUMP#1 20 SPM=140 PSI,30 SPM=170 PUMP#2 20 SPM=150 PSI,30 SPM=170 12:00 - 13:00 1.00 DRILL P SURF CIRCULATE BOTTOMS UP @ 3,300' -GPM 500, PSI 600 13:00 - 14:30 1.50 DRILL P SURF RIG UP AND PERFORM LOT AT 3,342'MD 2,404'TVD WITH 9.0 PPG MUD WT. TO 600 PSI 13.8 PPG EMW RIG DOWN AND BLOW DOWN LINES Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 12 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01OHL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:30 - 00:00 9.50 DRILL P INTI DRILL AHEAD FROM 3,342'TO 4,380' -PUW 155K,SOW 95K, ROT 116K -GPM 700, PSI ON 1430, PSI OFF 1160, RPM 40 -TQ ON 11K,TQ OFF 8K,WOB 25K -AST 1.32,ART 3.36,ADT 4.68 -ADT FOR LAST 24 HRS 4.68 SPR AT 3,883'MD 2,592'TVD 9.1 MW @ 18:30 PUMP#1 20 SPM=150 PSI,30 SPM=175 PUMP#2 20 SPM=150 PSI,30 SPM=170 SPR AT 4,355'MD 2,753'TVD 9.2 MW @ 23:30 PUMP#1 20 SPM=150 PSI,30 SPM=200 PUMP#2 20 SPM=175 PSI,30 SPM=200 11/2/2011 00:00 - 12:00 12.00 DRILL P INTI DRILL AHEAD FROM 4380'to 5683'. -PUW 190K,SOW 100K,ROT 130K -GPM 700, PSI ON 1530, PSI OFF 1400,RPM 100 -TQ ON 14K,TQ OFF 13K,WOB 30K -AST 1.99,ART 5.35,ADT 7.34 -MOSES CREW HELD A SPILL DRILL,CRT 105 SEC. SPR-4828'MD/2916'TVD MW 9.3 PPG PUMP 1 -20 SPM 130 PSI/30 SPM 160 PSI PUMP 2-20 SPM 130 PSI/30 SPM 160 PSI SPR-5304'MD/3082'TVD MW 9.3 PPG PUMP 1 -20 SPM 170 PSI/30 SPM 200 PSI PUMP 2-20 SPM 170 PSI/30 SPM 200 PSI 12:00 - 19:30 7.50 DRILL P INTI DRILL AHEAD FROM 5683'to 6347'. -PUW 236K,SOW 98K,ROT 135K -GPM 700, PSI ON 1550,PSI OFF 1400, RPM 100 -TQ ON 20K,TQ OFF 17-20K,WOB 30K -AST 2.36,ART 2.57,ADT 4.93 SPR-5778'MD/3256'TVD MW 9.3 PPG PUMP 1 -20 SPM 175 PSI/30 SPM 225 PSI PUMP 2-20 SPM 200 PSI/30 SPM 220 PSI 19:30 - 21:00 1.50 DRILL P INTI CIRCULATE 3 BOTTOMS UP AT 700 GPM WITH 1360 PSI WHILE ROTATING AND RECIPROCATING. SAW INCREASED AMOUNT OF FINE SAND IN THE FIRST BOTTOMS UP THAT DIMINISHED BY THE THIRD BOTTOMS UP. 21:00 - 21:30 0.50 DRILL P INTI FLOW CHECK THE WELL FOR 30 MINUTES. HYDRATES SEEN AT SURFACE. SPR-6347'MD/3475'TVD MW 9.3 PPG PUMP 1 -20 SPM 145 PSI/30 SPM 175 PSI PUMP 2-20 SPM 145 PSI/30 SPM 170 PSI 21:30 - 00:00 2.50 DRILL P INTI BACK REAM OUT OF THE HOLE FROM 6347'- 5307'AT 700 GPM AND 100 RPM. 11/3/2011 00:00 - 03:00 3.00 DRILL P INTI BACK REAM OUT OF THE HOLE FROM 5307'- 3311'AT 700 GPM AND 100 RPM. 03:00 - 03:45 0.75 DRILL P INTI CIRCULATE BOTTOMS UP AT THE SHOE AT 700 GPM WITH 100 RPM WHILE RECIPROCATING THE PIPE A FULL STAND. 03:45 - 04:00 0.25 DRILL P INTI FLOW CHECK THE WELL. STATIC. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 13 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 - 06:00 2.00 DRILL P INTI PULL OUT OF THE HOLE RACKING BACK 5" DRILL PIPE FROM 3311'-665'. 06:00 - 09:00 3.00 DRILL P INTI FLOW CHECK THE WELL FOR 10 MINUTES. STATIC. RACK BACK 4 STANDS OF 5"HWDP AND LAY DOWN THE REST OF THE BHA TO THE PIPESHED. 09:00 - 11:00 2.00 CASING P INTI MOBILIZE TOOLS AND BHA OFF OF THE RIG FLOOR. -SIM OPS:PULL THE WEAR BUSHING AND WASH OUT THE STACK. CHANGE OUT THE TOP RAMS TO 9-5/8"CASING RAMS. 11:00 - 12:00 1.00 BOPSUR P INTI RIG UP AND TEST 9-5/8"CASING RAMS WITH 9-5/8"TEST JOINT TO 250 PSI LOW AND 4000 PSI HIGH FOR 5 MINUTES EACH. GOOD TEST. 12:00 - 12:30 0.50 BOPSUR P INTI RIG DOWN TESTING EQUIPMENT AND PULL THE TEST PLUG. 12:30 - 13:00 0.50 CASING P INTI DRAIN THE STACK AND INSTALL THE WEAR BUSHING. 13:00 - 15:00 2.00 CASING P INTI RIG UP 9-5/8"CASING EQUIPMENT AND SAFETY JOINT. 15:00 - 00:00 9.00 CASING P INTI RUN 9-5/8"40#L-80 BTC LINER AS FOLLOWS: -HES 9-5/8"FLOAT SHOE -1 JT 9 5/8"40#L-80 BTC CASING(#1) -HES 9-5/8"FLOAT COLLAR -1 JT 9 5/8"40#L-80 BTC CASING(#2) -BAKER 9-5/8"LANDING COLLAR -1 JT 9 5/8"40#L-80 BTC CASING(#3) -77 JTS 9 5/8"40#L-80 BTC CASING(#4477) -9 5/8"40#L-80 BTC LINER PUP -10 3/4"H563 X 9 5/8"BTC CROSS OVER SUB -BAKER 9 5/8"X 13 3/8"FLEX-LOCK LINER HANGER -DRILLABLE PACKOFF BUSHING -9 5/8"X13 3/8"ZXPN LNR TOP PACKER(PBR 9.57'X 10.19") BAKER-LOK SHOE-TRACK JTS#1-3 BOWSPRING CENTRALIZERS: 1 BOWSPRING W/STOP RING 5'ABOVE SHOE ON JT#1 1 BOWSPRING FLOATING ON JT#2 AND JT#3 1 BOWSPRING ON COLLAR OF JOINTS$4- #25 TOTAL 25 BOWSPRING CENTRALIZERS RUN 11/4/2011 00:00 - 01:00 1.00 CASING P INTI CIRCULATE 200 BBLS STAGING UP PUMPS TO 10 BPM WITH 200 PSI. 01:00 - 09:00 8.00 CASING P INTI RUN IN THE HOLE WITH 5"DRILL PIPE,5" HWDP,AND 8"DRILL COLLARS CIRCULATING DOWN EVERY 5 STANDS. 09:00 - 09:30 0.50 CASING P INTI RUN IN THE HOLE WITH 3 STANDS OF 5" DRILL PIPE FROM THE DERRICK WASHING DOWN THE LAST 2 STANDS AT 2 BPM WITH 160 PSI. 09:30 - 10:00 0.50 CEMT P INTI MAKE UP THE CEMENT HEAD AND HOSES. Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 14 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:00 - 13:00 3.00 CEMT P INTI WASH DOWN TO BOTTOM AT 2 BPM WITH 160 PSI. UP WT 300 K/DOWN WT 140K. TAG BOTTOM AT 6347'. PICK UP 2'OFF BOTTOM. STAGE UP THE PUMPS TO 5 BPM WITH 290 PSI. RECIPROCATE THE PIPE 20'STROKES AND STAGE UP THE PUMPS FROM 6 BPM WITH 380 PSI TO 9 BPM WITH 580 PSI. 13:00 - 13:30 0.50 CEMT N HMAN INTI BLOW DOWN LINES AND LAY DOWN THE CEMENT HEAD AND 1 JOINT OF 5"DRILL PIPE. 13:30 - 14:00 0.50 CEMT N HMAN INTI STAND BACK 3 STANDS OF 5"DRILL PIPE AND LAYDOWN THE 3.92'PUP JT. 14:00 - 14:30 0.50 CEMT N HMAN INTI RUN IN THE HOLE WITH 3 STANDS OF 5" DRILL PIPE. 14:30 - 15:30 1.00 CEMT N HMAN INTI MAKE UP CEMENT HEAD AND 1 JOINT OF DRILL PIPE HOOK UP THE LINES AND WASH BACK TO BOTTOM AT 9 BPM WITH 560 PSI. UP WT.300K/140 K 15:30 - 17:00 1.50 CEMT P INTI PUMP 5 BBLS OF 12 PPG MUD PUSH. PRESSURE TEST LINES TO 4500 PSI. PUMP ADDITIONAL 45 BBLS OF 12 PPG MUD PUSH AT 4 BPM WITH 100 PSI. PUMP 280 BBLS (1356 SX)OF 15.8 PPG CLASS G TAIL CEMENT WITH GAS BLOK LT(1.16 CU.FT YIELD)AT 5 BPM WITH 235 PSI. RECIPROCATION THROUGHOUT THE ENTIRE JOB,EXCEPT WHEN MUD PUSH WENT AROUND THE SHOE. DROP THE DART AND KICK OUT WITH 10 BBLS OF WATER FROM THE CEMENTERS. 17:00 - 18:00 1.00 CEMT P INTI DISPLACE WITH 202 BBLS OF 9.4 PPG LSND MUD AT 7 BPM WITH 580 PSI. FOLLOWED BY 68 BBLS OF 9.4 PPG HI VIS SWEEP AT 4 BPM WITH 720 PSI. AFTER 134 BBLS DISPLACED STOPPED RECIPROCATION AND SET LINER ON DEPTH DUE TO LOST DOWN WT. OBSERVED GOOD LIFT PRESSURE DURING DISPLACEMENT 400 PSI-800 PSI. BUMPED THE PLUG AT 270 BBLS DISPLACED(2678 STKS). PRESSURE UP TO 2800 PSI AND SET THE HANGER AND RELEASE THE RUNNING TOOL. CEMENT IN PLACE AT 18:00. 18:00 - 18:30 0.50 CASING P INTI PICK UP 6'TO EXPOSE THE DOGS. SLACK OFF AND SET DOWN 60K TO SET THE PACKER. ROTATE THE PIPE SLOWLY AND SLACK OFF TO CONFIRM PACKER SET. 18:30 - 20:30 2.00 CEMT P INTI PRESSURE UP TO 1000 PSI AND PULL OUT OF THE PBR. SEE PRESSURE BLEED OFF TO ENSURE RUNNING TOOL TO OUT OF THE PBR. CIRCULATE OUT THE CEMENT AT 12 BPM WITH 630 PSI. RECIPROCATING 40' STROKES. UP WT. 170 K/DOWN WT 140K. 90 BBLS OF CEMENT BACK TO SURFACE. 20:30 - 21:00 0.50 CEMT P INTI LAY DOWN THE CEMENT HEAD AND 1 JOINT OF 5"DRILL PIPE. BLOW DOWN THE TOP DRIVE. 21:00 - 21:30 0.50 CEMT P INTI STAND BACK 3 STANDS OF 5"DRILL PIPE. 21:30 - 00:00 2.50 CEMT P INTI MAKE UP SAFETY JOINT AND BEGIN LAYING DOWN DRILL COLLARS TO THE PIPE SHED. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 15 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site:PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/5/2011 00:00 - 01:00 1.00 CEMT P INTI CONTINUE LAYING DOWN DRILL COLLARS AND BREAK CROSSOVER OFF OF THE FOSV. 01:00 - 03:00 2.00 CEMT P INTI RACK BACK 5"HWDP AND 5"DRILL PIPE IN THE DERRICK. BAKER RUNNING TOOL SHOWED POSITIVE INDICATION OF THE DOG SUB SHEARED. -LUSCHE'S CREW HELD KICK WHILE TRIPPING DRILL. 03:00 - 04:30 1.50 CEMT P INTI CLEAN AND CLEAR FLOOR OF ALL TOOLS NOT NEEDED FOR UPCOMING OPERATIONS. 04:30 - 05:00 0.50 BOPSUR P INTI DRAIN OUT THE STACK AND RINSE. PULL THE WEAR RING. 05:00 - 07:00 2.00 BOPSUR P INTI CHANGE OUT TOP RAMS FROM 9-5/8" CASING RAMS TO 3-1/2"X 6"VBRS. SIM OPS: DERRICKMAN PERFORMED A QUARTERLY DERRICK INSPECTION. 07:00 - 12:00 5.00 BOPSUR P INTI RIG UP TO TEST BOPE. TEST THE UPPER RAMS WITH 5"TEST JOINT AND 4"TEST JOINT TO 250 PSI LOW/4000 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TEST. TEST THE ANNULAR WITH 4"TEST JOINT TO 250 PSI LOW/3500 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TEST. TEST LOWER RAMS WITH 4"TEST JOINT TO 250 PSI LOW/ 4000 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TEST. TEST 4"FOSV AND DART VALVE TO 250 PSI LOW/4000 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TEST.TEST 5"FOSV TO 250 PSI LOW/5000 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TEST. TESTS WITNESSED BY WSL BLAIR NEUFELD AND TOOLPUSHER NICK MARMON. TESTED WITH 4"TEST JOINT DUE TO RUNNING TAPERED STRING IN 8.75"INTERMEDIATE 2 SECTION. 12:00 - 12:30 0.50 BOPSUR P INTI RIG DOWN TEST EQUIPMENT. 12:30 - 13:00 0.50 BOPSUR P INTI DRAIN STACK. INSTALL WEAR RING. 13:00 - 15:00 2.00 CASING P INTI RIG UP TO TEST LINER. FUNCTION THE BLIND SHEARS AND TEST THE 9.625"LINER TO 250 PSI FOR 5 MINUTES AND 3500 PSI FOR 30 MINUTES. LOST 30 PSI IN FIRST 15 MINUTES AND 10 PSI IN SECOND 15 MINUTES. TEST APPROVED BY WTL. 15:00 - 15:30 0.50 CASING P INTI RIG DOWN TEST EQUIPMENT. INSTALL THE WEAR RING. 15:30 - 16:00 0.50 CASING P INTI AAR ON RUNNING LINER AND CEMENTING WITH BP MANAGEMENT. 16:00 - 18:00 2.00 CASING P INTI PJSM. MAKE UP BULLNOSE,CROSSOVER, STABILIZER AND CROSS OVER. PICK UP AND MAKE UP RTTS. MAKE UP DRILL COLLARS AND HWDP. 18:00 - 20:30 2.50 CASING P INTI RUN IN THE HOLE FROM 501'-3152'. TAG THE LINER TOP AT 3160'. STAND BACK 1 STAND. 20:30 - 22:00 1.50 CASING P INTI PJSM. RIG UP FOR NEGATIVE PRESSURE TEST. Printed 1/16/2012 4:09:34PM Page 16 of 62 North America-ALASKA- BP Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:00 - 00:00 2.00 CASING P INTI CIRCULATE 2 BPM WITH 220 PSI. DUE TO RETURNS COMING BACK VERY CONTAMINATED. HAD TO SLOW DOWN TO 1 BPM DUE TO THICK RETURNS AND HAD TO SHUT DOWN DUE TO LACK OF SURFACE HOLDING CAPACITY FOR RETURNS IN THE ROCKWASHER. 11/6/2011 00:00 - 01:30 2.50 CASING P INTI CIRCULATE AND CONDITION MUD AT 1 BPM WITH 130 PSI,1.5 BPM WITH 190 PSI,2 BPM WITH 200 PSI. 01:30 - 02:30 1.00 CASING P INTI CLEAN OFF SHAKERS IN THE MUD PITS AND ROCKWASHER,PREPARE TO RESUME PUMPING BOTTOMS UP. SCREENS WERE BLINDING OFF AND RUNNING OVER INTO CUTTINGS TROUGH. 02:30 - 03:30 1.00 CASING P INTI CIRCULATE BOTTOMS UP STAGING UP TO 7 BPM WITH 285 PSI. THE RETURNS CLEANED UP VERY CONTAMINATED THAT WAS BALLING UP. 9.1 PPG MUD WT IN AND OUT. OBTAIN SPRS. MUD PUMP 1 -20 SPM/95 PSI 30 SPM/175 PI MUD PUMP 1 -20 SPM/140 PSI 30 SPM/200 PSI 03:30 - 04:00 0.50 CASING P INTI ESTABLISH UP WT 143K/DOWN WT.85K AND ROTATE 1 TURN TO THE RIGHT AND SET THE RTTS WITH THE CENTER OF THE ELEMENT AT 3132.7'. PRESSURE UP AND TEST THE BACK SIDE TO 1000 PSI FOR 5 MINUTES. NO PRESSURE LOST. GOOD TEST. 04:00 - 05:00 1.00 CASING P INTI REVERSE CIRCULATE 75 BBLS AT 5 BPM WITH 250 PSI. OBTAIN SPRS. MUD WT IN AND OUT 9.1 PPG. MUD PUMP 1 -20 SPM/175 PSI 30 SPM/ 220 PI MUD PUMP 1 -20 SPM/175 PSI 30 SPM/220 PSI 05:00 - 06:00 1.00 CASING P INT1 PJSM WITH RIG CREW AND LRS ABOUT PUMPING 60 BBLS OF DIESEL. PRESSURE TEST LINES TO 500 PSI LOW/2000 PSI HIGH FOR 5 MINUTES. GOOD TEST. PUMP 60 BBLS OF DIESEL AND BLEED THE PRESSURE OFF TO 0 PSI. 06:00 - 07:00 1.00 CASING P INTI PERFORM NEGATIVE PRESSURE TEST. OBSERVE AND RECORD THE PRESSURE EVERY 2 MINUTES. 10 PSI OBERVED AT THE BEGINNING OF THE TEST. 10 PSI AT 15 MINUTES AND 10 PSI AT 30 MINUTES. GOOD TEST. TEST APPROVED BY WTL AUTHORITY. 07:00 - 08:00 1.00 CASING P INTI RIG UP AND REVERSE OUT THE DIESEL AT 2.5 BPM WITH 250 PSI. RIG DOWN THE FOSV, PUMP IN SUB,AND PUP JOINT. MAKE UP TOP DRIVE TO THE DRILL STRING. 08:00 - 09:30 1.50 CASING P INTI CIRCULATE SURFACE TO SURFACE AT 8 BPM WITH 240 PSI. SLOW DOWN TO 5 BPM DUE TO THE RETURNS BEING THICK. 9.1 PPG MUD WT. IN AND OUT OF THE HOLE. MONITOR THE WELL FOR 10 MINUTES. STATIC. BLOW DOWN THE TOP DRIVE. Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 17 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:30 - 10:30 1.00 CASING P INTI PULL OUT OF THE HOLE FROM 3152'TO 501' RACKING BACK 5"DRILL PIPE. 10:30 - 11:00 0.50 CASING P INTI PULL OUT OF THE HOLE FROM 501'RACKING BACK 5"HWDP AND 1 STAND OF 6.25"DRILL COLLARS. 11:00 - 12:00 1.00 CASING P INTI BREAK DOWN THE CROSSOVERS STABILIZER AND LAY DOWN THE 13-3/8" RTTS. 12:00 - 12:30 0.50 CASING P INTI CLEAR THE FLOOR OF ALL THIRD PARTY TOOLS. 12:30 - 13:30 1.00 CASING P INTI MOBILIZE BHA TOOLS TO THE FLOOR AND MAKE UP THE SAFETY JOINT. 13:30 - 15:30 2.00 DRILL N INTI MAKE UP CEMENT CLEANOUT BHA AS FOLLOWS: -8.75"HUGHES MILLTOOTH BIT SERIAL# 5145570 -NON MAG NEAR BIT STABILIZER 8.25" -(2)NON MAG DRILL COLLARS -NON MAG NEAR BIT STABILIZER 6.75" -NON MAG DRILL COLLAR -5"HWDP -6.5"JARS -(13)5"HWDP 15:30 - 19:00 3.50 DRILL N INTI CHANGE OUT THE ELEVATORS AND AIR SLIP INSERTS TO PICK UP THE 4". SINGLE IN THE HOLE FROM 567'-3086'FILLING EVERY 20 STANDS. 19:00 - 19:30 0.50 DRILL N INTI CHANGE OUT ELEVATORS TO PICK UP 5" DRILL PIPE AND CROSS OVER. WASH DOWN AND TAG PACKOFF BUSHING AT 3176'. UP WT. 110K/DOWN WT.75K/ROT.WT.92K. FREE TQ 5K @ 60 RPM 3 BPM WITH 245 PSI. OBTAIN SPRS AT 3086'MD WITH 9.1 PPG MUD WT. MUD PUMP 1 -20 SPM/200 PSI 30 SPM/ 245 PI MUD PUMP 1 -20 SPM/200 PSI 30 SPM/245 PSI 19:30 - 21:00 1.50 DRILL N INTI DRILL ON THE PACKER BUSHING AT 3176'. UP WT. 110K/DOWN WT.75K/ROT.WT.92K PUMP AT 3 BPM WITH 245 PSI OFF/275 PSI ON. TQ 5K OFF/6K ON AT 60 RPM WITH 15K WOB. THICK MUD RETURNS FILLING UP ROCKWASHER. 21:00 - 23:30 2.50 DRILL P INTI LAY DOWN 1 JT OF 5"AND BLOW DOWN TOP DRIVE. SLIP AND CUT DRILLING LINE AND SERVICE THE TOP DRIVE AND DRAW WORKS. 23:30 - 00:00 0.50 DRILL N INTI DRILL ON THE PACKER BUSHING AT 3176'. UP WT. 110K/DOWN WT.75K/ROT.WT.92K PUMP AT 3 BPM WITH 200 PSI OFF/220 PSI ON. TQ 5K OFF/6K ON AT 60 RPM WITH 15-20K WOB 11/7/2011 00:00 - 02:30 2.50 DRILL N INTI DRILL ON THE PACKER BUSHING AT 3176'. UP WT. 110K/DOWN WT.75K/ROT.WT.92K PUMP AT 3 BPM WITH 200 PSI OFF/220 PSI ON. TQ 5K OFF/6K ON AT 60 RPM WITH 15-20K WOB WORK THROUGH WITH NO PUMPS OR ROTATION. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 18 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) I Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:30 - 05:30 3.00 DRILL P INTI SINGLE IN THE HOLE WITH 4"DRILL PIPE FROM 3176'-5974'. MAKE UP CROSSOVER AND 5"DRILLPIPE AND RUN IN THE HOLE FROM 5977'-6165'. WASH DOWN FROM 6165' -6226'. TAGGED CEMENT STRINGERS. 05:30 - 09:30 4.00 DRILL P INTI DRILL SHOE TRACK FROM 6226'-6257'. OBTAIN SPRS, CONTINUE DRILLING FROM 6257'-6335'. TAGGED THE LANDING COLLAR AT 6262'. UP WT. 165K/DOWN WT.80K/ ROT.WT. 110K. PUMPING AT 380 GPM WITH 910 PSI STAGING UP TO 400 GPM WITH 1180 PSI. SPR MUD PUMP 1 =20 SPM 275 PSI/30 SPM 340 PSI MUD PUMP 2=20 SPM 270 PSI/30 SPM 340 PSI 09:30 - 13:00 3.50 DRILL P INTI PUMP HI-VIS SWEEP AND DISPLACE THE WELL TO 9.0 PPG LSND AT 6 BPM WITH 520 PSI ROTATING AND RECIPROCATING DURING DISPLACEMENT. OBTAIN SPR AFTER DISPLACING THE WELL TO 9.0 PPG AT 6335'MD MUD PUMP 1 =20 SPM 240 PSI/30 SPM 290 PSI MUD PUMP 2=20 SPM 240 PSI/30 SPM 275 PSI 13:00 - 14:30 1.50 DRILL P INTI DRILL OUT THE SHOE TRACK+20'OF NEW FORMATION TO 6367'. UP WT 165K/DOWN WT.80K/ROT WT. 110K PUMPING AT 10 BPM WITH 910 PSI OFF/1010 PSI ON. TQ 8-10K ON BOTTOM AT 80 RPM WITH 15-25K WOB. UNANNOUNED KICK DRILL WITH JENNINGS CREW,CRT 300 SEC. 14:30 - 15:30 1.00 DRILL P INTI CIRCULATE BOTTOMS UP WHILE ROTATING AND RECIPROCATING AT 10 BPM WITH 920 PSI. 15:30 - 16:30 1.00 DRILL P INTI RIG UP TO PERFORM LOT AT 6367'MD/3471' ND WITH 9.0 PPG MUD WT. PRESURE UP AND SEE BREAK OVER AT 660 PSI SURFACE PRESSURE. 12.66 PPG EMW. TEST APPROVED BY ODE. 16:30 - 17:00 0.50 DRILL P INTI RIG DOWN TESTING EQUIPMENT AND BLOW DOWN THE LINES. 17:00 - 21:00 4.00 DRILL N INT2 PULL OUT OF THE HOLE FROM 6367'-5974' RACKING BACK 5"DRILL PIPE. CHANGE OUT ELEVATORS TO 4"AND CONTINUE TO PULL OUT OF THE HOLE FROM 5974'-567'. 21:00 - 22:00 1.00 DRILL N INT2 RACK BACK THE 5"HWDP,JARS,DRILL COLLARS,AND BREAK OFF THE BIT. 22:00 - 22:30 0.50 DRILL N INT2 CLEAR THE FLOOR OF THIRD PARTY TOOLS. 22:30 - 23:00 0.50 DRILL N INT2 MOBILIZE BHA AND TOOLS TO THE FLOOR. 23:00 - 00:00 1.00 DRILL P INT2 CALIBRATE THE BLOCK HEIGHT. PICK UP THE MOTOR AND MAKE UP THE BIT. BHA COMPONENTS AS FOLLOW: -HYCALOG 8.75"DTX619M-D2 SERIAL# A140271 -POWERPAK PDM 1.5 DEGREE BEND Printed 1/16/2012 4:09:34PM North America ALASKA-BP Page 19 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/8/2011 00:00 - 02:30 2.50 DRILL P INT2 CONTINUE MAKING UP THE BHA AS FOLLOWS: -ARCVISION675 -TELESCOPE -ADNVISION675 -NON MAG DRILL COLLARS -8.75"INTEGRAL BLADE STAB. NON MAG DRILL COLLAR -FLOAT SUB -WELL COMMANDER SUB -5"HWDP -6.5"HYDRAULIC JARS -5"HWDP 02:30 - 03:30 1.00 DRILL P INT2 SHALLOW PULSE TEST MWD AT 590 GPM WITH 950 PSI. MAKE UP CROSS OVER TO 4" DRILL PIPE. 03:30 - 06:30 3.00 DRILL P INT2 RUN IN THE HOLE FROM 670'-6084'ON 4" DRILL PIPE. MAKE UP CROSS OVER AND RUN IN THE HOLE FROM 6084'-6182'ON 5" DRILL PIPE. 06:30 - 07:00 0.50 DRILL P INT2 OBTAIN SPR AT 6209'MD/3420'TVD WITH 9.0 PPG MW. MUD PUMP 1 =20 SPM 400 PSI/30 SPM 465 PSI MUD PUMP 2=20 SPM 380 PSI/30 SPM 440 PSI 07:00 - 09:00 2.00 DRILL P INT2 LOG AT 150'/HR FROM 6225'-6367'AT 40 RPM PUMPING AT 450 GPM WITH 1400 PSI. OBTAIN ECD BASELINE OF 9.65 WITH NO ROTATION AND 9.69 WITH ROTATION. 09:00 - 12:00 3.00 DRILL P INT2 DRILL FROM 6367'-6844'. UP WT. 175K/ DOWN WT.85K/ROT.WT. 115K PUMPING AT 550 GPM WITH 2120 PSI ON/1980 PSI OFF. ROTATING AT 80 RPM WITH TQ 11K ON/10 K OFF WITH 10K WOB. PUMP HI-VIS SWEEP AT 6748'.NO INCREASE IN CUTTING SEEN AT SHAKERS. AST-.10/ART-1.47/ADT-1.57 SPR @ 12:00 6844'MD,3656'TVD,MW=9.0 PPG MP#1 @ SPM 20=295 PSI,30 SPM=420 PSI MP#2 @ 20 SPM=290 PSI,30 SPM=410 PSI 12:00 - 00:00 12.00 DRILL P INT2 DRILL FROM 6844'-8401'. UP WT.205K/ DOWN WT.95K/ROT.WT. 130K PUMPING AT 585 GPM WITH 2860 PSI ON/2650 PSI OFF. ROTATING AT 100 RPM WITH TQ 13K ON/12 K OFF WITH 10K-15K WOB. AST-.38/ART-3.78/ADT-4.16 UNANNOUNCED D2 DRILL CREW RESPONDED IN 4 MIN SPR @ 15:20 7315"MD,3833'TVD,MW=9.0 PPG MP#1 @ SPM 20=375 PSI,30 SPM=450 PSI MP#2 @ 20 SPM=360 PSI,30 SPM=475 PSI SPR @2315 7791'MD,4030'TVD,MW=9.0 PPG MP#1 @ SPM 20=425 PSI,30 SPM=525 PSI MP#2 @ 20 SPM=440 PSI,30 SPM=510 PSI SPR @ 23:15 8358'MD,4221'TVD,MW=9.0 PPG MP#1 @ SPM 20=460 PSI,30 SPM=550 PSI MP#2 @ 20 SPM=450 PSI,30 SPM=550 PSI Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 20 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/9/2011 00:00 - 02:00 2.00 DRILL P INT2 CONTINUE DRILL FROM 8401'-8644'. UP WT. 215K/DOWN WT.98K/ROT.WT. 133K PUMPING AT 580 GPM WITH 2720 PSI ON/ 2620 PSI OFF. ROTATING AT 100 RPM WITH TQ 14K ON/13 K OFF WITH 10K WOB. AST=0.13 ART= 1.2 ADT= 1.33 TROUBLE FUNCTIONING IBOP IN TOP DRIVE. HELD KICK WHILE DRILLING DRILL SPR AT 8644'MD,4327'TVD,9.1 MW MP#1 20 SPM=460 PSI,30SPM=550 PSI MP#2 20 SPM=450 PSI,30SPM=550 PSI 02:00 - 03:30 1.50 DRILL N RREP INT2 CIRCULATE BOTTOMS UP AT 585 GPM 2600 PSI WHILE RECIPROCATING 1 STAND.NO INCREASE IN CUTTING SEEN AT BOTTOMS UP. 03:30 - 08:00 4.50 DRILL N RREP INT2 FLOW CHECK WELL FOR 10 MIN AND CONFIRM NO FLOW. PULL OUT OF HOLE ON ELEVATORS FROM 8644'-7791'.WELL STARTED SWABBING.PUMP OUT OF THE HOLE FROM 7791'-106276'AT 350 GPM 1500 PSI.SAW OVERPULLS UP TO 50K.STOPPED AND WIPED CLEAN. 08:00 - 08:30 0.50 DRILL P INT2 FLOW CHECK WELL FOR 10 MIN AND CONFIRM NO FLOW. LUBRICATE RIG. 08:30 - 12:00 3.50 DRILL N RREP INT2 PJSM AND CHANGE OUT UPPER IBOP. 12:00 - 12:30 0.50 DRILL P INT2 LUBRICATE RIG. 12:30 - 13:30 1.00 DRILL N RREP INT2 FINISH CHANGING OUT UPPER IBOP AND INSTALL BALES ON ELEVATORS.RIG UP AND PRESSURE TEST UPPER IBOP TO 250 PSI FOR 5 MIN AND 4000 PSI FOR 5 MIN. 13:30 - 16:00 2.50 DRILL N RREP INT2 OBTAIN SPR AND RUN IN HOLE FROM 6276'-8359'.WASH AND REAM THROUGH TIGHT SPOTS AT 8030'AND 8225'. SPR AT 6337'MD,3468'TVD,9.2MW MP#1 20 SPM=480 PSI,30SPM=590 PSI MP#2 20 SPM=460 PSI,30SPM=550 PSI 16:00 - 17:00 1.00 DRILL N RREP INT2 CONTINUE TO WASH AND REAM IN HOLE FROM 8359'-8644'AT 300 GPM AND 1090 PSI. ROTATING AT 60 RPM. 17:00 - 00:00 7.00 DRILL P INT2 DRILL AHEAD FROM 8644'-9400'.UP WT.240K /DOWN WT.95K/ROT.WT. 140K.PUMPING AT 525 GPM WITH 2790 PSI 0W 2480 PSI OFF. ROTATING AT 80 RPM WITH TQ 17K ON/16K OFF WITH 20-25K WOB.AST=1.05 ART=2.06 ADT=3.11 SPILL DRILL CREW RESPONDED IN 1 MIN 51 SEC. SPR AT 8644'MD,4326'TVD,9.2MW MP#1 20 SPM=450 PSI,30SPM=560 PSI MP#2 20 SPM=475 PSI,30SPM=550 PSI SPR AT 9118'MD,4501'TVD,9.3MW MP#1 20 SPM=450 PSI,30SPM=530 PSI MP#2 20 SPM=410 PSI,30SPM=510 PSI Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 21 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/10/2011 00:00 - 12:00 12.00 DRILL P INT2 DRILL AHEAD FROM 9400'-10537'.UP WT. 272K/DOWN WT. 115K/ROT.WT. 159K. PUMPING AT 580 GPM WITH 3280 PSI ON/ 3070 PSI OFF.ROTATING AT 100 RPM WITH TQ 20K ON/20K OFF WITH 15K WOB.AST= 3.77 ART=2.71 ADT=6.48 HELD KICK WHILE DRILLING DRILL.CREW RESPONDED IN 54 SEC. SPR AT 9871'MD,4871'ND,9.4 MW MP#1 20 SPM=440 PSI,30 SPM=550 PSI MP#2 20 SPM=440 PSI,30 SPM=575 PSI SPR AT 10441'MD,5258'ND,9.4 MW MP#1 20 SPM=440 PSI,30 SPM=550 PSI MP#2 20 SPM=450 PSI,30 SPM=570 PSI 12:00 - 17:30 5.50 DRILL P INT2 DRILL AHEAD FROM 10537'-11013'. UP WT. 275K/DOWN WT. 120K/ROT.WT. 167K. PUMPING AT 575 GPM WITH 3550 PSI ON/ 3150 PSI OFF.ROTATING AT 60 RPM WITH TQ 22K ON/22K OFF WITH 18K WOB. SPR AT 10916'MD,5615'ND,9.3 MW MP#1 20 SPM=475 PSI,30 SPM=590 PSI MP#2 20 SPM=490 PSI,30 SPM=600 PSI 17:30 - 18:30 1.00 DRILL P INT2 CIRCULATE BOTTOMS UP AT 600 GPM WITH 3650 PSI. ROTATING AT 40 RPM WITH 21K TQ.SMALL INCREASE IN CUTTING SEEN AT BOTTOMS UP.CONDITIONING MUD BEFORE ADDING SPIKE FLUID 18:30 - 00:00 5.50 DRILL P INT2 DRILL AHEAD FROM 11013-11485'.UP WT. 220K/DOWN WT. 133K/ROT.WT. 168K. PUMPING AT 570 GPM WITH 4100 PSI OW 4030 PSI OFF. ROTATING AT 80 RPM WITH TQ 14K ON/11K OFF WITH 15K WOB.AST=2.21, ART=4.41,ADT=6.62.ADDED SPIKE FLUID OVER 3 CIRCULATIONS INCREASING MUD WEIGHT TO 10.7 PPG.HELD FIRE DRILL CREW RESPONDED IN 2 MIN 17 SEC. SPR AT 11424'MD,5998'ND,10.6 MW MP#1 20 SPM=580 PSI,30 SPM=740 PSI MP#2 20 SPM=560 PSI,30 SPM=700 PSI 11/11/2011 00:00 - 12:00 12.00 DRILL P INT2 DRILL AHEAD FROM 11485'-12148'. UP WT. 231K/DOWN WT. 140K/ROT.WT. 174K. PUMPING AT 515 GPM WITH 3850 PSI ON/ 3530 PSI OFF. ROTATING AT 60 RPM WITH TQ 15K ON/13K OFF WITH 15K WOB. HELD UNANNOUNCED KICK WHILE DRILLING DRILL WITH LUSCHE'S CREW,CRT 54 SEC. -AST 4.59/ART 3.39/ADT 7.98 OBTAIN SPR'S AT 12053'MD/6460'ND WITH 10.6 PPG MW MP#1 20 SPM=500 PSI,30 SPM=625 PSI MP#2 20 SPM=500 PSI,30 SPM=625 PSI Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 22 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 22:30 10.50 DRILL P INT2 DRILL AHEAD FROM 12148'-12840'.UP WT. 255K/DOWN WT. 140K/ROT.WT. 182K. PUMPING AT 500 GPM WITH 3780 PSI ON/ 3520 PSI OFF.ROTATING AT 80 RPM WITH TQ 20K ON/19K OFF WITH 15K WOB. OBTAIN SPR'S AT 12813'MD/6940'TVD WITH 10.6 PPG MW MP#1 20 SPM=390 PSI,30 SPM=510 PSI MP#2 20 SPM=480 PSI,30 SPM=560 PSI 22:30 - 23:00 0.50 DRILL P INT2 WAIT ON TRAVELING CYLINDER PLOT TO EXTEND TD.WORK THE STRING IN 30' STROKES WITH 80 RPM. 23:00 - 00:00 1.00 DRILL P INT2 CONTINUE DRILLNG FROM 12840'TO 12906'. UP WT.255K/DOWN WT. 140K/ROT.WT. 182K.PUMPING AT 500 GPM WITH 3780 PSI ON/3520 PSI OFF.ROTATING AT 80 RPM WITH TQ 20K ON/19K OFF WITH 15K WOB. _ AST=2.5 ART=3.76 ADT=6.26 11/12/2011 00:00 - 00:30 0.50 DRILL P INT2 CONTINUE DRILLNG FROM 12906'TO 12960'. UP WT.255K/DOWN VVT. 140K/ROT.WT. 182K.PUMPING AT 500 GPM WITH 3780 PSI ON/3520 PSI OFF. ROTATING AT 80 RPM WITH TQ 20K ON/19K OFF WITH 15K TD FOR THE HOLE SECTION CALLED BY BP WSL AND ON-SITE GEOLOGIST. OBTAIN SPR'S AT 12960'MD/7029'TVD/10.6 PPG MUD WT. MP#1 20 SPM=490 PSI,30 SPM=640 PSI MP#2 20 SPM=500 PSI,30 SPM=620 PSI 00:30 - 02:00 1.50 DRILL P INT2 CIRCULATE TO CLEAN UP THE HOLE WHILE OBTAINING MAD PASS DATA. 500 GPM WITH 3520 PSI ROTATING AT 80 RPM AND RECIPROCATING 50'. -LUSCHE'S CREW HELD SPILL DRILL,CRT 60 SEC. 02:00 - 12:00 10.00 DRILL P INT2 BACKREAM FROM 12960'-9971'AT 720'/HR TO OBTAIN CALIPER DATA TO EVALUATE WASHOUT FOR CEMENT VOLUME CALCULATIONS. SLOW DOWN TO 360'/HR FOR DENSITY DATA OVER 12650'-12500'(BIT DEPTHS)AND 10280'-9971'(BIT DEPTHS). ROTATING AT 80 RPM WITH 8K TORQUE PUMPING AT 500 GPM WITH 2790 PSI. 12:00 - 00:00 12.00 DRILL P INT2 BACKREAM FOR DENSITY DATA OVER 9971'-9000"(BIT DEPTHS)AT 360'/HR BACKREAM FROM 9000'-6655'AT 720'/HR TO OBTAIN CALIPER DATA TO EVALUATE WASHOUT FOR CEMENT VOLUME CALCULATIONS. ROTATING AT 80 RPM WITH 8K TORQUE PUMPING AT 500 GPM WITH 2790 PSI. -CARLOS CREW HELD KICK WHILE TRIPPING DRILL,CRT 75 SEC. 11/13/2011 00:00 - 01:00 1.00 EVAL P INT2 BACKREAM FROM 6655'-6312'AT 720'/HR TO OBTAIN CALIPER DATA TO EVALUATE WASHOUT FOR CEMENT VOLUME CALCULATIONS. ROTATING AT 80 RPM WITH 8K TORQUE PUMPING AT 500 GPM WITH 2790 PSI. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 23 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(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 DRILL P INT2 CIRCULATE BOTTOMS UP AT,500 GPM,2700 PSI,AND 40 RPM. 02:00 - 04:00 2.00 DRILL P INT2 MAKE UP AND RUN IN HOLE WITH RTTS AND SET AT 93'. PRESSURE TEST TO 1000 PSI FOR 5 MIN. 04:00 - 06:00 2.00 BOPSUR P INT2 FLUSH THE BOP STACK,SET TEST PLUG, AND HAVE A BOP DRILL WITH LUSCHE'S CREW,CRT 60 SEC. TOOK 6.5 BBLS TO FILL THE GAS BUSTER. FILL THE CHOKE MANIFOLD WITH WATER. 06:00 - 14:30 8.50 BOPSUR P INT2 TEST THE BOPE. TEST THE ANNULAR PREVENTER WITH THE 4"TEST JOINT TO 250 PSI LOW/3500 PSI HIGH FOR 5 MINUTES EACH. GOOD TEST. TEST THE UPPER AND LOWER RAMS WITH THE 4"TEST AND 5" TEST JOINTS TO 250 PSI LOW/4000 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TEST. TEST THE CHOKE MANIFOLD, MANUAL CHOKE AND KILL LINES TO 250 PSI LOW/4000 PSI HIGH FOR 5 MINUTES EACH. GOOD TESTS.TEST HYDRAULIC CHOKE AND MANUAL CHOKE TO 250 PSI LOW/1500 PSI HIGH FOR 5 MIN.GOOD TEST. TEST THE BLIND RAMS TO 250 PSI LOW/4000 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TESTS. TEST THE 4"FOSV,4"DART VALVE,(2)4.5" FOSV,3.5"FOSV AND 4.5"DART VALVE TO 250 PSI LOW/4000 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TESTS. KOOMY TEST START PRESSURE 3025 PSI,SHUT IN PRESSURE 1800 PSI, REACHED 200 PSI INCREASE IN 34 SEC AND FULL PRESSURE IN 165 SEC. 6 BOTTLES AT 2200 PSI AVERAGE. TESTED AND CALIBRATED THE GAS ALARMS. TEST WITNESSED BY BP WSL JOSEPH LEBLANC AND DOYON TOOLPUSHER NICK MARMON. AOGCC REP. BOB NOBLE WAIVED WITNESS OF BOP TEST. 14:30 - 15:00 0.50 BOPSUR P INT2 BLOW DOWN CHOKE AND KILL LINES ALONG WITH THE CHOKE MANIFOLD. LAYDOWN THE CROSS OVERS FOR THE SAFETY VALVES. 15:00 - 15:30 0.50 DRILL P INT2 PICK UP STAND OF 5"DRILL PIPE AND MAKE UP THE 4.5"IF FOSV ONTO THE TOP OF THE 5"DRILL PIPE. SCREW INTO THE STORM PACKER,SHUT THE ANNULAR, PICK UP TO STRING WEIGHT AND OPEN THE HCR CHOKE TO VERIFY NO PRESSURE. OPEN THE FOSV. 15:30 - 16:00 0.50 DRILL P INT2 PULL THE STORM PACKER TO THE RIG FLOOR AND LAY IT DOWN. 16:00 - 21:30 5.50 DRILL P INT2 RUN IN THE HOLE FROM 6276'-12960'. FILLING DRILL PIPE EVERY 2000'. 21:30 - 22:30 1.00 DRILL N DPRB INT2 LAY DOWN A SINGLE AT 12908'STARTED TAKING WEIGHT AND TORQUING UP. CONTINUED TO WORK PIPE AT 12935'RACK BACK ONE STAND.PIPE WAS FREE BUT CONTINUED TO TORQUE UP. 22:30 - 23:30 1.00 DRILL N DPRB INT2 WORK STRING WITH 80 RPM TQ.25-30K 500 GPM AT 3650 PSI. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 24 of 62 Operation Summary Report Common Well Name:Z-116 'AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:30 - 00:00 0.50 DRILL N DPRB INT2 MAKE UP STAND AT 12908'AND REAM DOWN TO 12960'WITH 80 RPM AND 520 GPM AT 3650 PSI.PUW 315K SOW 150K TQ 25-31 K. _ 11/14/2011 00:00 - 02:00 2.00 DRILL N DPRB 12,960.00 INT2 WORKING TIGHT HOLE ISSUES FROM 12935'-12960'522 GPM 100 RPM 31K TQ.PUW 370K SOW 130K ROT 180K.TOP DRIVE STALLING OUT OCCATIONALLY.MIXING UP A 30 BBL PILL OF STEEL LUBE TO REDUCE TORQUE. 02:00 - 04:00 2.00 DRILL N DPRB 12,960.00 INT2 PUMPED 30 BBLS OF STEEL LUBE AT 530 GPM AND 3720 PSI 100 RPM WITH 30K TQ. TOP DRIVE STALLED OUT WHEN THE LAST OF THE PILL ROUNDED THE CORNER.PICK UP 300K REGAINED ROTATION AND CONTINUE TO WORK PIPE.TOP DRIVE STALLING OUT AT 12954'AND 12900'. SLACKED OFF QUICKLY AND REGAINED ROTATION.CONTINUE TO WORK STAND. TIGHT SPOTS BEGIN TO CLEAN UP AND TORQUE REDUCED TO 27K. 04:00 - 06:30 2.50 DRILL N DPRB 12,960.00 INT2 PULL ON ELEVATORS FROM 12960'-12770' ABOVE THE TOP OF THE TMLV PUW 400K. BACK REAM OUT OF THE HOLE FROM 12770'-11107'500 GPM 3200 PSI 100 RPM AND 20K TQ.PUW 350K. 06:30 - 07:30 1.00 DRILL N DPRB 12,960.00 INT2 DECISION MADE TO RUN BACK IN HOLE TO INCREASE LUBE CONCENTRATION AND EVALUATE HOLE CONDITIONS. RUN IN HOLE FROM 11107'-12908'.OBSERVED 15K BOBBLE AT 12720'.PUW 300K SOW 125K 07:30 - 12:00 4.50 DRILL N DPRB 12,960.00 INT2 WASH DOWN FROM 12908'-12960;STAGEING PUMPS UP FROM 161 GPM 850 PSI TO 500GPM 3880 PSI. 100 RPM 22K-28K TORQUE.BEGIN TO WORK STAND TORQUE 25-30K 100 RPM.TOP DRIVE STALLING OUT ON UP STROKE. PUMP 30 BBL PILL OF 50/50 LUBE 776 AND LOW TORQUE.ABLE ROTATE ON UP STROKE WHEN PILL ENTERED OPEN HOLE.TORQUE 25K-30K 100 RPM PUW 280K SOW 145K. 12:00 - 15:30 3.50 DRILL N DPRB 12,960.00 INT2 CONTIUE TO WORK PIPE 80'STROKES 538 GPM 3830 PSI 100 RPM 25-30K TORQUE PUW 270K SOW 124K ROT 185K.CONSULTED WITH TOWN AND DECISION MADE TO INCREASE LUBE CONCENTRATION IN OPEN HOLE. 15:30 - 17:00 1.50 DRILL N DPRB 12,960.00 INT2 SPOT 440 BBLS OF 2/3 LOWTORQUE 1/3 LUBE 776 IN OPEN HOLE. 100 RPM PUW 274K SOW 140K ROT 200K. 17:00 - 21:30 4.50 DRILL P INT2 FLOW CHECK THE WELL FOR 10 MIN. PULL OUT OF HOLE ON ELEVATORS FROM 12960- 6900'. SPR 12940'MD 6994' 10.6 PPG MP#1 20 SPM 400 PSI,30 SPM 500 PSI MP#2 20 SPM 400 PSI,30 SPM 550 PSI 21:30 - 23:00 1.50 DRILL P INT2 CONTINUE TO PULL OUT OF HOLE ON ELEVATORS FROM 6900'-6345'LAYING DOWN DRILL PIPE 1x1 THROUGH THE PIPE SHED. 23:00 - 00:00 1.00 DRILL P INT2 FLOW CHECK WELL 10 MIN CONFIRMED NO FLOW. PUMP 30 BBL STEEL LUBE PILL AT 537 GPM 3290 PSI 80 RPM 5K TQ. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 25 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/15/2011 00:00 - 01:00 1.00 DRILL P INT2 CONTINUE TO CIRCULATE STEEL LUBE PILL 537 GPM 3290 PSI 80 RPM 5K TQ. FLOW CHECK THE WELL FOR 10 MIN AND CONFIRMED NO FLOW. 01:00 - 01:30 0.50 DRILL P INT2 SERVICE AND INSPECT TOP DRIVE, BLOCKS, AND DRAWORKS. 01:30 - 04:00 2.50 DRILL P INT2 CONTINUE TO PULL OUT OF HOLE LAYING DOWN DRILL PIPE FROM 6308'-6084'LAY DOWN COSS OVER,CROSS OVER SLIP SEGMENTS,CROSS OVER ELEVATORS,AND CONTINUE TO PULL OUT OF HOLE 6084'-3383'. 04:00 - 05:00 1.00 DRILL P INT2 DROP 2.125"OPENING BALL AND FUNCTION WELL COMMANDER AT 2 BPM PRESSURE UP TO 1500 PSI FOR 30 SEC PRESSURE UP TO 2060 PSI TO OPEN.CIRCULATE THE WELL COMMMANDER ACROSS THE TOP OF THE LINER AT 754 GPM 2440 PSI RECIPROCATING 80'STROKES.NO CUTTINGS SEEN AT BOTTOMS UP.DROP 2.125" CLOSING BALL PRESSURE UP TO 500 PSI HOLD FOR 30 SEC, PRESSURE UP TO 2020 PSI TO CLOSE WELL COMMANDER AND PUMP A DRY JOB. 05:00 - 07:00 2.00 DRILL P INT2 CONTINUE PULLING OUT OF HOLE ON ELEVATORS FROM 3383'-670'.MONTIER THE WELL FOR 10 MIN AND CONFIRMED NO FLOW. 07:00 - 08:30 1.50 DRILL P INT2 LAY DOWN 5"HWDP AND JARS. 08:30 - 11:30 3.00 DRILL P INT2 PJSM FOR LAYING DOWN BHA. LAY DOWN BHA#6. LAY DOWN BIT, MOTOR, ARCVISION675,TELESCOPE,ADNVISION675, NM DRILL COLLARS,STABILIZER, FLOAT SUB,AND WELL COMMANDER. BIT GRADED 1-3-CT-A-X-1-WT-TD. 11:30 - 12:00 0.50 CASING P INT2 FLUSH STACK DRAIN STACK AND CLEAR RIG FLOOR. 12:00 - 12:30 0.50 CASING P INT2 LUBRICATE RIG 12:30 - 13:30 1.00 BOPSUR P INT2 CHANGE OUT 3.5"X 6"VBR TO 7"CASING RAMS. 13:30 - 15:30 2.00 BOPSUR P INT2 PULL WEAR RING, INSTALL TEST PLUG, INSTALL 7"TEST JOINT.TEST 250 PSI 5 MIN AND 4000 PSI 5 MIN.GOOD TEST. 15:30 - 19:00 3.50 CASING P INT2 RIG UP TO RUN 7"CASING.MAKE UP CROSS OVER FOR FLOOR SAFETY JOINT,PICK UP 134 SPLIT RIB CENTRALIZERS,AND FRANKS FILL UP TOOL. 19:00 - 00:00 5.00 CASING P INT2 PJSM FOR RUNNING CASING.MAKE UP SHOE TRACK AND CHECK FLOATS. RUN IN HOLE TO 951'WITH TCII.CROSS OVER TO VAMTOP HC AND CONTIUNE TO RUN IN HOLE TO 2458'. 11/16/2011 00:00 - 01:30 1.50 CASING P INT2 CONTINUE TO RUN 7"VAMTOP HC CASING FROM 2458'-3280'FILLING EVERY JOINT, CIRCULATING DOWN EVERY 10 JOINTS. OBSERVED NO GAIN IN TWO CONSECUTIVE STRAPS. Printed 1/16/2012 4:09:34PM North America-'ALASKA- BP Page 26 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(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 CASING P INT2 CIRCULATE SURFACE TO SURFACE AT 210 GPM 300 PSI.PUW 115K SOW 103K. CHECKED MANUAL STRAP ALL FLUID ACCOUNTED FOR. 03:00 - 04:00 1.00 CASING P INT2 CONTINUE TO RUN IN HOLE WITH 7"VAMTOP HC CASING FROM 3280'TO 4189' 04:00 - 04:30 0.50 CASING P INT2 HOLD UNANOUNCED D1 KICK WHILE TRIPPING DRILL -RECOGNITION TIME:7 SECONDS -TIME TO WELL SHUT-IN:5 MINUTES 10 SECONDS HOLD AAR WITH RIG CREW PRIOR TO CONTINUING WITH RUNNING CASING 04:30 - 08:30 4.00 CASING P INT2 CONTINUE TO RUN IN HOLE WITH 7"VAMTOP HC CASING FROM 4189'-6335' 08:30 - 10:00 1.50 CASING P INT2 CIRCULATE BOTTOMS UP AT 210 GPM 470 PSI. 10:00 - 12:00 2.00 CASING P INT2 CONTINUE TO RUN 7"CASING FROM 6335'-7304'.CIRCULATE EVERY 5TH JOINT DOWN AT 210 GPM. 12:00 - 15:00 3.00 CASING P INT2 CONTINUE TO RUN 7"CASING FROM 7304'-8900'.CIRCULATE EVERY 5TH JOINT DOWN AT 210 GPM. 15:00 - 23:00 8.00 CASING P INT2 CONTINUE TO RUN 7"CASING FROM 8900'-12945'.CIRCULATE EVERY 10TH JOINT DOWN AT 210 GPM. 23:00 - 00:00 1.00 CASING P INT2 LAY DOWN FRANKS TOOL,BLOW DOWN TOP DRIVE,AND RIG UP CEMENT HEAD. 11/17/2011 00:00 - 02:30 2.50 CASING P INT2 RECIPROCATE PIPE IN 20'STROKES WHILE STAGING PUMPS UP TO 294 GPM WITH 900 PSI.CIRCULATE BOTTOMS UP.PUW 315K SOW 130K. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 27 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:30 - 06:30 4.00 CEMT P INT2 PJSM.CEMENT 7"CASING IN PLACE WITH RECIPROCATION AS FOLLOWS: 01:40 BATCH MUD PUSH 02:00 MUD PUSH TO WEIGHT 02:20 HOLD PRE-JOB SAFETY MEETING WITH RIG CREW,SCHLUMBERGER CEMENTERS, AND CI-12M HILL TRUCK PUSHER 02:44 FLOOD CEMENT LINES TO CEMENT HEAD WITH 5 BBLS MUDPUSH 02:49 TEST CEMENT KICKOUTS, INCREASE PRESSURE AND TEST LINES TO 3,500 PSI 02:52 PUMP 30 BBLS 10.8 PPG MUDPUSH II AT 5 BPM --5.0 BPM,750 PSI --RECIPROCATE CASING 20'STROKES WHILE PUMPING 03:00 BATCH UP LEAD CEMENT --LAND CASING ON PROFILE WHILE BATCHING CEMENT 03:09 DROP BOTTOM PLUG --POSITIVE INDICATION PLUG DROPPED 03:12 LEAD CEMENT TO WEIGHT 03:13 PUMP 179.7 BBLS 11.0 PPG LITECRETE LEAD CEMENT AT 6 BPM --5.7 BPM,790 PSI —RECIPROCATE CASING 20'STROKES WHILE PUMPING 04:00 DONE WITH LEAD CEMENT —PARK CASING ON PROFILE WHILE NOT PUMPING —BATCH UP TAIL CEMENT 04:13 TAIL CEMENT TO WEIGHT 04:14 PUMP 21 BBLS 15.8 PPG CLASS G TAIL CEMENT AT 3 BPM --3.4 BPM,560 PSI 04:27 DONE WITH TAIL CEMENT 04:28 ISOLATE CEMENTRS FOR CLEAN UP 04:30 DONE WITH CLEANUP 04:31 DROP TOP PLUG --POSITIVE INDICATION PLUG DROPPED 04:33 DISPLACE CEMENT WITH RIG PUMP --6 BPM,600 PSI --RECIPROCATE CASING STRING 20' STROKES WHILE PUMPING 05:13 LAND CASING ON PROFILE AS MUD PUSH EXITS CASING 05:16 RESUME RECIPROCATING CASING STRING 20'STROKES 05:19 LAND CASING ON PROFILE AS LEAD CEMENT EXITS CASING 05:21 RESUME RECIPROCATING CASING STRING 20'STROKES 05:22 DROP DISPLACEMENT RATE 308 BBLS INTO DISPLACEMENT --4.5 BPM,490 PSI 05:40 DROP DISPLACEMENT RATE 388 BBLS INTO DISPLACEMENT --3.5 BPM,960 PSI 06:00 DROP DISPLACEMENT RATE 458 BBLS INTO DISPLACEMENT --2.0 BPM,1,090 PSI Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 28 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:02 LAND CASING ON HANGER PROFILE FOR REMAINDER OF DISPLACEMENT 06:18 BUMP PLUG 492 BBLS INTO DISPLACEMENT --1,070 PSI FINAL DISPLACEMENT PRESSURE --INCREASE PRESSURE TO 1,600 PSI AND HOLD FOR 5 MINUTES 06:24 BLEED OFF PRESSURE AND CHECK FLOATS --FLOATS HOLDING CEMENT IN PLACE AT 06:18 HRS LEAD CEMENT REACHES 500 PSI COMPRESSIVE STRENGTH IN 38 HRS 37 MIN TAIL CEMENT REACHES 2,000 PSI COMPRESSIVE STRENGTH IN 15 HRS 32 MIN CEMENT PUMPED: -540 SX OF 11.0 PPG LITEPCRETE LEAD AT 1.87 CUFT/SX -101 SX OF 15.8 PPG G-BLEND TAIL AT 1.17 CUFT/SX EST.TOC=7345 06:30 - 08:00 1.50 CASING P INT2 RIG UP AND PRESSURE TEST 7" INTERMEDIATE CASING -250 PSI LOW FOR 5 MINUTES -INCREASE PRESSURE TO 4,000 PSI -7.9 BBLS TO REACH TEST PRESSURE -LOST 0 PSI IN FIRST 15 MINUTES -LOST 0 PSI IN SECOND 15 MINUTES BLEED OFF PRESSURE -7.5 BBLS RECOVERED IN TRIP TANK 08:00 - 08:30 0.50 CASING P INT2 RIG UP TO OA VALVE AND ESTABLISH INJECTIVITY DOWN 7"X 13-3/8"&9-5/8" CASING ANNULUS -PUMP AT 1 BPM -BEGIN INJECTING 7 BBLS INTO TEST AT 950 PSI -PUMP ADDITIONAL 5 BBLS AFTER REACHING INJECTION PRESSURE 08:30 - 10:00 1.50 CASING P INT2 RIG DOWN CEMENTING EQUIPMENT DRAIN BOP STACK 10:00 - 10:30 0.50 CASING P INT2 CLEAR RIG FLOOR OF CASING RUNNING AND CEMENTING EQUIPMENT CHANGE OUT BALES AND INSTALL 5" ELEVATORS 10:30 - 12:00 1.50 WHSUR P INT2 INSTALL 7"PACKOFF PER FMC FIELD TECH, AND TEST VOID 250 PSI AND 5000 PSI.GOOD TEST. 12:00 - 15:30 3.50 BOPSUR P INT2 CHANGE OUT 7"CASING RAMS TO 3.5"X 6" VARIABLE RAMS.PRESSURE TEST WITH 4" AND 4.5"TEST JOINT 250 PSI 5MIN AND 4000 PSI 5 MIN.GOOD TEST. INSTALL WEAR RING. SIMOPS INJECT DOWN 7"X 9-5/8"&13-3/8" ANNULUS.980 PSI TO BREAK DOWN AND PUMP ADDITIONAL 2 BBLS. 15:30 - 17:00 1.50 CASING P INT2 PJSM.SLIP AND CUT 119'OF DRILLING LINE. SERVICE TOP DRIVE AND BLOCKS. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 29 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) _ Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:00 - 19:00 2.00 CASING P INT2 PJSM.CHANGE OUT 4.5"IF SAVER SUB TO XT-39, PIPE HANDLER JAWS,BELL GUIDE, AND SAFETY WIRE. 19:00 - 00:00 5.00 CASING P INT2 PJSM. LAY DOWN 5"DRILL PIPE 1 X 1 THROUGH THE MOUSE HOLE OUT OF THE DERRICK. INJECT DOWN 7"X 9-5/8"&13-3/8" ANNULUS.820 PSI TO BREAK DOWN AND PUMP ADDITIONAL 2 BBLS 11/18/2011 00:00 - 02:00 2.00 CASING P INT2 CONTINUE TO LAY DOWN 5"DRILL PIPE THROUGH THE MOUSE HOLE. 02:00 - 02:30 0.50 CASING P INT2 SERVICE AND INSPECT TOP DRIVE, BLOCKS, AND DRAWORKS. 02:30 - 03:00 0.50 CASING P INT2 LOAD PIPESHED WITH TUBING,4-3/4"DRILL COLLARS,4"HWDP,MWD TOOLS,MOBILIZE TOOLS TO THE RIG FLOOR. 03:00 - 04:00 1.00 CASING P INT2 PULL WEAR BUSHING TO CONFIRM DIMENSION. 04:00 - 05:30 1.50 CASING P INT2 PJSM. INSTALL DERRRICK LIGHTS. 05:30 - 07:00 1.50 STWHIP P INT2 RIG UP WHIPSTOCK MILLING ASSEMBLY AND RACK BACK IN DERRICK INJECT DOWN 7"X 9-5/8"&13-3/8"ANNULUS. 900 PSI TO BREAK DOWN AND PUMP ADDITIONAL 2 BBLS 07:00 - 09:00 2.00 STWHIP P INT2 CHANGE ELEVATORS TO 4-1/2" RUN 4-1/2"12.6"L-80 IBT SPACEOUT STRING -17'PUP JOINT PLUS 8 FULL JOINTS INJECT DOWN 7"X 9-5/8"&13-3/8"ANNULUS. 900 PSI TO BREAK DOWN AND PUMP ADDITIONAL 2 BBLS 09:00 - 10:00 1.00 STWHIP P INT2 PICK UP WHIPSTOCK SLIDE WITH CROSSOVER AND MAKE UP TO 4-1/2" SPACEOUT STRING PICK UP WHIPSTOCK MILLING ASSEMBLY AND MAKE UP TO WHIPSTOCK SLIDE INJECT DOWN 7"X 9-5/8"&13-3/8"ANNULUS. 900 PSI TO BREAK DOWN AND PUMP ADDITIONAL 2 BBLS 10:00 - 12:00 2.00 STWHIP P INT2 PU 6 4-3/4"SPIRAL DRILL COLLARS AND 18 JTS 4"HWDP SHALLOW TEST MWD INJECT DOWN 7"X 9-5/8"&13-3/8"ANNULUS. 900 PSI TO BREAK DOWN AND PUMP ADDITIONAL 2 BBLS 12:00 - 21:00 9.00 STWHIP P INT2 BLOW DOWN TOP DRIVE SINGLE IN HOLE WITH 4"DRILLPIPE FROM PIPE SHED FROM 1,175'TO 7,694'MD INJECT DOWN 7"X 9-5/8"&13-3/8"ANNULUS. 1,020 PSI TO BREAK DOWN AND PUMP ADDITIONAL 2 BBLS HELD D1 KICK WHILE TRIPPING DRILL 21:00 - 00:00 3.00 STWHIP P INT2 RIH WITH WHIPSTOCK ASSEMBLY ON 4" DRILLPIPE STANDS FROM 7,694'-11,146'. SIM-OPS:CLEAR 7"X 9-5/8"&13-3/8" ANNULUS WITH 350 BBLS 10.8 PPG LSND -PUMP 2 BPM -PRESSURE BROKE OVER AT 1,200 PSI,7 BBLS INTO DISPLACEMENT Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 30 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/19/2011 00:00 - 01:30 1.50 STWHIP P INT2 RIH WITH WHIPSTOCK ASSEMBLY ON 4" DRILLPIPE STANDS FROM 11,146'12,817'MD. SIM-OPS:FINISH CLEARING 7"X 9-5/8"& 13-3/8"ANNULUS WITH 350 BBLS 10.8 PPG LSND -PUMP 2 BPM -PRESSURE BROKE OVER AT 1,200 PSI,7 BBLS INTO DISPLACEMENT RIG UP LITTLE RED HOT OIL TO FREEZE PROTECT OA 01:30 - 03:00 1.50 STWHIP P INT2 CHANGE OUT SWIVEL PACKING ON TOP DRIVE SIM-OPS:FINISH RIGGING UP LITTLE RED PRESSURE TEST LINES FREEZE PROTECT OA WITH 250 BBLS DEAD CRUDE 03:00 - 04:30 1.50 STWHIP P INT2 ORIENTWHIPSTOCK 25 DEGREES RIGHT-OF-HIGH-SIDE(ROHS) OBTAIN PARAMETERS -PUW 200K,SOW 105K TAG FLOAT COLLAR AT 12,864'MD SET WHIPSTOCK ANCHOR AND SHEAR MILLS OFF WHIPSTOCK -BOLT SHEARED AT 42K DOWN WT. 04:30 - 06:30 2.00 STWHIP P INT2 BEGIN DISPLACING TO 9.9 PPG RHELIANT MOBM SYSTEM.ONCE MOBM EXITS MILL BEGIN MILLING OPPERATION AT 12502'WITH 240 GPM 3080 PSI 100 RPM TORQUE 14K ON 10K OFF PUW 190 SOW 105. HELD FIRE DRILL CREW RESPONDED IN 2 MIN 5 SEC. 06:30 - 11:30 5.00 STWHIP P INT2 CONTINUE TO MILL WINDOW AND 20'OF NEW HOLE AT 245 GPM 2780 PSI 100 RPM TORQUE 13K ON 10K OFF PUW 190 SOW 110 ROT 135 WOB 5. SPR AT 12490'MD 6723'TVD 9.9 PPG MP#1 20 SPM=620 PSI 30 SPM=920 PSI MP#2 20 SPM=630 PSI 30 SPM=920 PSI 11:30 - 12:00 0.50 STWHIP P INT2 CIRCULATE BOTTOMS UP WHILE RECIPROCATING ACROSS THE WINDOW AT 245 GPM 2780 PSI 100 RPM 10K TORQUE. 12:00 - 13:00 1.00 STWHIP P INT2 FINISH CIRCULATING BOTTOMS UP WHILE RECIPROCATING ACROSS THE WINDOW. WORK MILLS THROUGH WINDOW WITH PUMPS OFF AT 60 RPM AND PUMPS ON AT 120 RPM. 13:00 - 13:30 0.50 STWHIP P INT2 STAND BACK ONE STAND OF 4"DP TO 12459'. BLOW DOWN TOP DRIVE AND RIG UP TO PERFORM LEAK OFF TEST. Printed 1/16/2012 4:09:34PM North America ALASKA- BP Page 31 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:30 - 14:30 1.00 STWHIP P INT2 RIG UP AND PERFORM LOT -WINDOW DEPTH: 12,502'MD,6,751'TVD -MUD WT 9.8 PPG -PRESSURE DEVIATED FROM STRAIGHT LINE AT 2,170 PSI -STARTED LOSING PRESSURE(INJECTING) AT 2,170 PSI -5.0 BBLS TO REACH INJECTION -4.0 BBLS RECOVERED AT END OF TEST LOT EMW WITH 2,170 PSI: 15.98 PPG RESULTS SENT IN AND AUTHORIZATION TO PROCEED GRANTED BY ODE RYAN CIOLKOSZ AND DRILLING SUPERINTENDENT JOHN RALL 14:30 - 20:30 6.00 STWHIP P INT2 FLOW CHECK THE WELL FOR 10 MIN AND CONFIRM NO FLOW. PULL OUT OF HOLE ON ELEVATORS FROM 12459'TO 812'.FLOW CHECK THE WELL FOR 10 MIN AND CONFIRM NO FLOW. 20:30 - 23:00 2.50 STWHIP P INT2 LAY DOWN 4"HWDP AND 4-3/4"DRILL COLLARS,MWD,AND MILLS.MILLS WERE IN GAUGE. 23:00 - 00:46 STWHIP P INT2 CLEAN AND CLEAR RIG FLOOR. 11/20/2011 00:00 - 01:30 1.50 BOPSUR P INT2 PICK UP JETTING TOOL AND JET STACK, FUNCTION RAMS AND BAG, BLOW DOWN CHOKE AND KILL LINES,AND JET AGAIN. MOBILIZE BHA TOOLS TO THE RIG FLOOR. 01:30 - 04:30 3.00 STWHIP P INT2 MAKE UP BHA#8 AS FOLLOWS: -HUGHES EP7258 6.125"BIT -4.75"SHORTPAC MOTOR -6"IB STABILIZER -4.75"NM FLEX PC -SLIMPULSE MWD -3 JTS.4.75"NM FLEX DC -3-1/2"X XT-39 CROSSOVER -21 JTS.4"XT-39 DP -4-3/4"HYDRA-JARS 04:30 - 12:00 7.50 STWHIP P INT2 SINGLE IN THE HOLE WITH 4"DRILL PIPE OUT OF THE PIPE SHED FROM 845'TO 6820' FILLING EVERY 20 STANDS. 12:00 - 14:30 2.50 STWHIP P INT2 CONTINUE TO RUN IN THE HOLE 6820'-12484' FILLING THE PIPE EVERY 2000' SPR AT 12484'MD 6739'TVD 9.8 MW MP#1 SPM 20=720, PSI 30 SPM= 1030 PSI MP#2 SPM 20=900, PSI 30 SPM= 1000 PSI 14:30 - 00:00 9.50 DRILL P PROD1 TAG BOTTOM AT 12534'. DRILL TO 12766' WITH 250 GPM 3190 PSI OFF 3360 PSI ON PUW 200K SOW 100K SLIDING 100% Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 32 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/21/2011 00:00 - 12:00 12.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 12,766' TO 12,984'MD -PUW 197K,SOW 98K, ROT 135K -250 GPM 3250 PSI ON,3150 PSI OFF -40 RPM,TQ 12K ON,10K OFF -20K WOB ART 0.54,AST 5.30,ADT 5.84 SPR @ 05:00:DEPTH 12,856'MD,6,825'TVD, MW 9.9 PPG MP#1:20 SPM:850 PSI;30 SPM: 1,170 PSI MP#2:20 SPM:800 PSI;30 SPM: 1,100 PSI 12:00 - 17:00 5.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 12,984' TO 13,215'MD -PUW 200K,SOW 98K, ROT 130K -250 GPM 3,330 PSI ON,3,230 PSI OFF -40 RPM,TQ 12K ON,10K OFF -20K WOB -MUD WT IN 10.0 PPG,MUD WT OUT 10.1 PPG ART 3.43,AST 0.13,ADT 3.56 SPR @ 17:00:DEPTH 13,215'MD,6,812'TVD, MW 9.9 PPG MP#1:20 SPM:800 PSI;30 SPM: 1,000 PSI MP#2:20 SPM:700 PSI;30 SPM: 1,100 PSI 17:00 - 18:30 1.50 DRILL P PROD1 FLOW CHECK WELL FOR 10 MINUTES -WELL STATIC PUMP OUT OF HOLE FROM 13,215'TO 12,578' MD -250 GPM,3,030 PSI 10.0 PPG MUD WT IN AND OUT POOH FROM 12,578'TO 12,485' -PULL STABILIZER,MOTOR AND BIT THROUGH WINDOW 18:30 - 19:30 1.00 DRILL P PROD1 CIRCULATE BOTTOMS-UP -ROTATE AND RECIPROCATE DRILLSTRING -250 GPM,3,150 PSI -40 RPM,TQ 11K -10.0 PPG MUD WT IN AND OUT 19:30 - 20:00 0.50 DRILL P PROD1 FLOW CHECK WELL FOR 10 MINUTES -WELL STATIC POOH FROM 12,485'TO 11,925'MD -MONITOR FIRST 5 STANDS FOR SWABBING PUMP DRY JOB BLOW DOWN TOP DRIVE 20:00 - 00:00 4.00 DRILL P PROD1 POOH ON ELEVATORS FROM 11,925'TO 6,246'MD HELD UNANNOUNCED D1 KICK WHILE TRIPPING DRILL -AAR WITH CREW POST-DRILL ADT FOR LAST 24 HRS:9.40 Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 33 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/22/2011 00:00 - 04:00 4.00 DRILL P PROD1 CONTINUE TO POOH ON ELEVATORS FROM 6,246'TO 906'MD 161'MD FLOW CHECK WELL FOR 10 MINUTES -JARS 1 STAND BELOW BOP STACK -WELL STATIC LAY DOWN JARS CONTINUE TO POOH ON ELEVATORS FROM 814'MD 254'MD FLOW CHECK WELL FOR 10 MINUTES -BHA 1 STAND BELOW BOP STACK -WELL STATIC RACK BACK FINAL STAND AT 161'MD 04:00 - 06:00 2.00 DRILL P PROD1 LAY DOWN BUILD BHA(BHA#8) -RACK BACK STAND OF FLEX COLLARS -UNABLE TO REMOVE SLIMPULSE TOOL FROM HOUSING --TOOL SENT TO DEADHORSE FOR REMOVAL BIT GRADE:5-2-BT-M-E-2-LT-BHA 06:00 - 06:30 0.50 DRILL P PROD1 CLEAR RIG FLOOR OF BUILD BHA COMPONENTS MOBILIZE BHA#9 COMPONENTS TO RIG FLOOR 06:30 - 10:00 3.50 DRILL P PROD1 PICK UP POWERDRIVE ARCHER BHA PER SCHLUMBERGER DD AS FOLLOWS: -6-1/8"SMITH MDi513 LUBPX PDC BIT WITH 2 X 12/32"AND 3X 10/32"JETS -4-3/4"POWERDRIVE ARCHER ROTARY STEERABLE ASSEMBLY -4-3/4"POWERDRIVE RECEIVER -4-3/4"POWERDRIVE FLEX -4-3/4"PERISCOPE -4-3/4"IMPULSE MWD -4-3/4"ADN475 -3X 4-3/4"NON-MAG FLEX COLLARS -4-3/4"WELL COMMANDER CIRC SUB -3-1/2"IF PIN X 4"XT-39 BOX CROSSOVER -4-3/4"SMITH HYDRA-JARS TOTAL BHA LENGTH:244.09' 10:00 - 17:30 7.50 DRILL P PROD1 RIH WITH BHA#9 FROM 244'TO 12,474'MD HELD D1 KICK WHILE TRIPPING DRILL 17:30 - 19:30 2.00 DRILL P PROD1 SLIP AND CUT DRILLING LINE SERVICE TOP DRIVE,TRAVELLING BLOCKS, AND CROWN Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 34 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:30 - 21:00 1.50 DRILL P PROD1 OBTAIN SLOW PUMP RATES RIH FROM 12,474'TO 12,793'MD -NO ISSUES EXITING WINDOW -TAKING 25-30K DOWN WT AT 12,793'MD ATTEMPT TO WORK BHA PAST OBSTRUCTION WITH NO SUCCESS TOP DRIVE UP AND PUMP DOWN PAST OBSTRUCTION -250 GPM,3,300 PSI -ABLE TO WORK PAST OBSTRUCTION CONTINUE TO 13,099'MD WITHOUT FURTHER ISSUE SPR @ 19:30:DEPTH 12,474'MD,6,700'TVD, MW 10.0 PPG MP#1:20 SPM:800 PSI;30 SPM: 1,100 PSI MP#2:20 SPM:800 PSI;30 SPM: 1,025 PSI 21:00 - 22:30 1.50 DRILL N DPRB 13,099.00 PROD1 POOH 5 STANDS FROM 13,099'TO 12,818'MD -SURVEYS FROM CURRENT BHA NOT MATCHING BUILD BHA(PREVIOUS RUN) 22:30 - 23:30 1.00 DRILL N DPRB 13,099.00 PROD1 RIH FROM 12,808'TO 13,193'MD -PERFORM CHECKSHOT SURVEYS EVERY STAND TO CHECK SURVEY QUALITY 23:30 - 00:00 0.50 DRILL P PROD1 WASH DOWN FROM 13,193'AND TAG TD AT 13,215'MD DIRECTIONALLY DRILL AHEAD FROM 13,215' TO 13,276'MD -PUW 220K,SOW 99K, ROT 126K -275 GPM,3,950 PSI ON,3,350 PSI OFF -140 RPM,TQ 13K ON,11 K OFF 12K WOB -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG ART 0.5 ADT 0.5 ADT FOR LAST 24 HRS:0.5 11/23/2011 00:00 - 02:00 2.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 13,276' TO 13,356'MD -PUW 220K,SOW 99K,ROT 126K -275 GPM,3,950 PSI ON,3,350 PSI OFF -140 RPM,TQ 13K ON,11K OFF -12K WOB -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG SPR @ 00:20: DEPTH 13,277'MD,6,813'TVD, MW 9.9 PPG MP#1:20 SPM:700 PSI;30 SPM: 1,050 PSI MP#2:20 SPM:800 PSI;30 SPM: 1,090 PSI 02:00 - 05:30 3.50 DRILL N DPRB 13,356.00 PROD1 TROUBLESHOOT MWD -NOT GETTING RELIABLE SURVEYS PERFORM ROLL TEST AT 13,345'MD -13,285'MD TOOL DEPTH -MWD SEND RESULTS IN FOR ANALYSIS PULL UP 100'AND PERFORM SECOND ROLL TEST -DETERMINED ISSUE CAN BE CORRECTED OUT AND ABLE TO PROCEED WITH DRILLING Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 35 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:30 - 08:30 3.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 13,356' MD -PUW 210K,SOW 95K, ROT 130K -275 GPM,3,870 PSI ON,3,700 PSI OFF -140 RPM,TQ 15K ON,12K OFF -12K WOB -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG 08:30 - 09:30 1.00 DRILL N DPRB 13,400.00 PROD1 CONFERENCE CALL WITH TOWN ON SURVEY QUALITY 09:30 - 12:00 2.50 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD TO 13,593'MD -PUW 210K,SOW 95K, ROT 130K -275 GPM,3,870 PSI ON,3,700 PSI OFF -140 RPM,TQ 15K ON,12K OFF -12K WOB -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG ART 3.8,ADT 3.8 12:00 - 22:30 10.50 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 13,593' TO 14,124'MD -PUW 210K,SOW 95K, ROT 130K -275 GPM,3,870 PSI ON,3,700 PSI OFF -140 RPM,TQ 15K ON,12K OFF -12K WOB -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG SPR @ 13:00: DEPTH 13,277'MD,6,813'TVD, MW 9.9 PPG MP#1:20 SPM:800 PSI;30 SPM: 1,050 PSI MP#2:20 SPM:800 PSI;30 SPM: 1,150 PSI SPR @ 21:30: DEPTH 14,091'MD,6,780'TVD, MW 9.9 PPG MP#1:20 SPM:675 PSI;30 SPM:1,000 PSI MP#2:20 SPM:750 PSI;30 SPM:1,025 PSI 22:30 - 23:30 1.00 DRILL N DPRB 4,124.00 PROD1 QUESTIONABLE SURVEY DATA(3+DEGREE CHANGE IN AZIMUTH ON 30'SURVEY) RACK BACK STAND AND RE-SHOOT SURVEY 23:30 - 00:00 0.50 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 14,124' TO 14,165'MD -PUW 210K,SOW 95K,ROT 130K -275 GPM,3,870 PSI ON,3,700 PSI OFF -140 RPM,TQ 15K ON,12K OFF -12KWOB -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG ART 6.17,ADT 6.17 ADT FOR LAST 24 HRS:9.97 Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 36 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) ' Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/24/2011 00:00 - 12:00 12.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 14,165' TO 14,869'MD -PUW 210K,SOW 90K, ROT 140K -275 GPM,3,980 PSI ON,3,750 PSI OFF -140 RPM,TQ 14K ON,13K OFF -13K WOB -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG -HAVING TO RE SHOOT SURVEYS AT LEAST ONE OR TWO TIMES PER SURVEY ART 11.0,ADT 11.0 SPR @ 08:30:DEPTH 14,588'MD,6,826'TVD, MW 9.9 PPG MP#1:20 SPM:760 PSI;30 SPM: 1,040 PSI MP#2:20 SPM:700 PSI;30 SPM: 1,010 PSI 12:00 - 14:00 2.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 14,869' TO 14,968'MD -PUW 210K,SOW 75K, ROT 125K -278 GPM,3,980 PSI ON,3,750 PSI OFF -140 RPM,TQ 15K ON,13K OFF -13K WOB -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG -HAVING TO RE SHOOT SURVEYS AT LEAST ONE OR TWO TIMES PER SURVEY SPR @ 13:30: DEPTH 15,054'MD,6,859'TVD, MW 9.9 PPG MP#1:20 SPM:900 PSI;30 SPM: 1,100 PSI MP#2:20 SPM:800 PSI;30 SPM: 1,150 PSI 14:00 - 18:00 4.00 DRILL N DPRB 14,968.00 PROD1 NOTICED LOSS IN PITS AND 4%DROP IN FLOW-OUT AT 14,968'MD PULL BIT OFF BOTTOM AND SHUT DOWN TO MONITOR STATIC LOSSES -WELL STATIC RESUME DRILLING FROM 14,968'TO 15,240' MD -PUW 235K,SOW 85K, ROT 130K -275 GPM,3,980 PSI ON,3,780 PSI OFF -140 RPM,TQ 15K ON,14K OFF -10K WOB -ADT 3.08,ART 3.08 -ADT FOR 24 HRS 14.08 -MUD WT IN 9.9 PPG,MUD WT OUT 10.0 PPG -DYNAMIC LOSSES AT 60 BBUHR AND INCREASING -TOTAL OF 20 SURVEYS RE SHOT 18:00 - 19:30 1.50 DRILL N DPRB 14,968.00 PROD1 CIRCULATE BOTTOMS-UP -278 GPM,3,800 PSI -140 RPM,TQ 13K -DYNAMIC LOSSES AT 120-130 BBL/HR SLOW RATE AT BOTTOMS-UP TO CONTROL LOSSES WHILE BUILDING LCM PILL -150 GPM,1,600 PSI OBTAIN SLOW PUMP RATES SPR @ 19:30: DEPTH 15,240'MD,6,853'TVD, MW 9.9 PPG MP#1:20 SPM:950 PSI;30 SPM: 1,050 PSI MP#2:20 SPM:800 PSI;30 SPM: 1,100 PSI Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 37 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:30 - 20:00 0.50 DRILL N DPRB 14,968.00 PROD1 PUMP OUT OF HOLE FROM 15,240'TO 14,963' MD -150 GPM,1,200 PSI 20:00 - 21:00 1.00 DRILL N DPRB 14,968.00 PROD1 SPOT 30 BBL,45 PPB LCM PILL OUTSIDE BHA -PUMP THROUGH BHA -210 GPM,2,400 PSI --PRESSURE INCREASING TO 2,600 AS LCM _ PILL EXITS BIT 21:00 - 23:30 2.50 DRILL N DPRB 14,968.00 PROD1 POOH FROM 14,963'TO GET ABOVE LCM PILL -HOLE SWABBING TOP DRIVE UP AND DISPLACE OUT FROM 14,963'TO 13,287'MD -1 BPM,110-300 PSI 23:30 - 00:00 0.50 DRILL N DPRB 14,968.00 PROD1 STAGE UP PUMPS,CIRCULATE BOTTOMS-UP AND ESTABLISH LOSS RATE -3 BPM --120 GPM,1,200 PSI 80 RPM,TO 11K --NO LOSSES LOSSES OVER LAST 24 HRS:509 BBLS TOTAL LOSSES TO HOLE SECTION:509 BBLS 11/25/2011 00:00 - 01:30 1.50 DRILL N DPRB 14,968.00 PROD1 CONTINUE CIRCULATING BOTTOMS-UP AND ESTABLISHING LOSS RATE -4 BPM --178 GPM,1,750 PSI --80 RPM,TQ 12K --NO LOSSES -5 BPM --212 GPM,2,480 PSI --80 RPM,TQ 12K —NO LOSSES -6.5 BPM(DRILLING RATE) —284 GPM,3,750 PSI —80 RPM,TQ 11.5K —54 BBUHR DYNAMIC LOSSES -9.9 PPG MUD WT IN AND OUT -LOSSES DURING CIRCULATING:9 BBLS SHUT DOWN AND FLOW CHECK WELL -WELL STATIC 01:30 - 03:30 2.00 DRILL N DPRB 14,968.00 PROD1 RIH FROM 13,287'TO 15,240'MD -MAKE UP TOP DRIVE AND WASH FROM 14,871'TO 15,240'MD —14,871'10 15,150'MD: 127 GPM,1,190 PSI; 30 RPM,TQ 12.5K --15,150'TO 15,240'MD:212 GPM,2,680 PSI; 80 RPM,TQ 13K --LOSING 0.5 BBL PER STAND WASHED DOWN(PIT VOLUME MAINTAINING CONSTANT) 03:30 - 04:00 0.50 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 15,240' TO 15,305' -PUW 235K,SOW 75K, ROT 130K -275 GPM,4,050 PSI ON,3,850 PSI OFF -130 RPM,TQ 13K ON,12K OFF -10K WOB -MUD WT IN 9.9 PPG,MUD WT OUT 9.9 PPG -DYNAMIC LOSSES 90-130 BBUHR -ART.5,ADT.5 -ADT FOR 24 HRS.5 Printed 1/16/2012 4:09:34PM North America-ALASKA BP Page 38 of 62 Operation Summary Report Common Well Name:Z-116 I AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 - 07:00 3.00 DRILL N DPRB 15,305.00 PROD1 AT 15,305'SHUT DOWN TO TAKE SURVEY, FLOW CHECKED WELL,POSITIVE FLOW, SHUT WELL IN -SICP 410 PSI,SIDPP 560 PSI -MADE LEVEL 0 NOTIFICATIONS -AUTHORIZATION RECEIVED FROM WTL TO PERFORM EXHALE TEST LINE UP TO BLEED PRESSURE CHOKE MANIFOLD AND GAS BUSTER TO TRIP TANK IN 2 BBL INCRIMENTS -SIDPP 490,SICP 320 -BLEED 2 BBLS THROUGH CHOKE SHUT BACK IN -SIDPP 270,SICP 150 -BLEED 2 BBLS THROUGH CHOKE SHUT BACK IN -SIDPP 220, SICP 100 BLEED REMAINING PRESSURE THROUGH CHOKE -TOTAL OF 7 BBLS GAINED DURING EXHALE TEST -WELL NOW STATIC WITH CHOKE FULLY OPEN RECEIVED AUTHORIZATION FROM WTL TO OPEN BOP -WELL STATIC AFTER OPENING BOP 07:00 - 10:30 - 3.50 DRILL N DPRB 14,968.00 PROD1 POOH FROM 15,303'TO 14,963'MD LAY IN 35 BBL LCM PILL(40 LB/BBL CONCENTRATION)FROM 14,963'TO 13,902' MD POOH FROM 13,902'TO WINDOW AT 12,502' MD 10:30 - 11:30 1.00 DRILL N DPRB 14,968.00 PROD1 BREAK CIRCULATION TO ESTABLISH LOSS RATE STAGE UP PUMPS TO 212 GPM,2,180 PSI -DYNAMIC LOSS RATE 18 BBL/HR -9.9 PPG MUD WT IN AND OUT 11:30 - 13:30 2.00 DRILL N DPRB 14,968.00 PROD1 RIH FROM 12,502'TO 15,303'MD SIM-OPS:FINISH BUILDING 80 LB/BBL LCM PILL 13:30 - 16:00 - 2.50 DRILL N DPRB 14,968.00 PROD1 DROP AND PUMP DOWN WELL COMMANDER FUNCTIONING BALL -84 GPM,750 PSI --PRESSURE INCREASED TO 1,450 PSI WHEN ON SEAT -PRESSURE UP TO 2,000 PSI AND HOLD FOR 30 SECONDS -PRESSURE UP TO 2,480 PSI AND WELL COMMANDER FUNCTIONED OPEN -84 GPM,630 PSI DROP ISOLATION BALL TO DIRECT 100% FLOW OUT WELL COMMANDER SUB SPOT 80 BBL,80 LB/BBL LCM PILL AT WELL COMMANDER Printed 1/16/2012 4:09.34PM North America -ALASKA- BP Page 39 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:00 - 21:00 5.00 DRILL N DPRB 14,968.00 PROD1 POOH TO 12,258'MD,LAYING IN 80 LB/BBL LCM PILL -PUMP 3.5 BBLS(HOLE DISPLACEMENT)PER STAND WHILE PULLING -84 GPM,300 PSI -CALCULATED TOP OF PILL: 13,100'MD DROP WELL COMMANDER FUNCTIONING BALL AND PUMP DOWN DRILLPIPE -84 GPM,580 PSI --PRESSURE INCREASED TO 1,500.HOLD FOR 30 SECONDS -PRESSURE UP TO 2,000 AND HOLD FOR 30 SECONDS -PRESSURE UP AND WELL COMMANDER FUNCTIONED CLOSED AT 2,010 PSI -84 GPM,700 PSI 21:00 - 00:00 3.00 DRILL N DPRB 14,968.00 PROD1 PJSM ON SQUEEZE OPERATION, FILL CHOKE MANIFOLD AND GAS BUSTER SHUT ANNULAR PREVENTOR -PUMP 4.6 BBLS SICP 310 PSI,MONITOR 10 MIN SICP 270 PSI -PUMP 2 BBLS SICP 510 PSI,MONITOR 15 MIN SICP 360 PSI -PUMP 5.4 BBLS SICP 670 PSI,MONITOR 6 MIN SICP 470 PSI -PUMP 8 BBLS SICP 670 PSI,MONITOR 25 MIN SICP 470 PSI -PUMP 15 BBLS SICP 720 PSI,MONITOR 30 MIN SICP 620 PSI 11/26/2011 00:00 - 03:30 3.50 DRILL N DPRB 14,968.00 PROD1 CONTINUE WITH SQUEEZE OPERATION -PUMP 10 BBLS SICP 790 PSI,MONITOR 30 MIN SICP 700 PSI -PUMP 5 BBLS SICP 800 PSI,MONITOR 30 MIN SICP 720 PSI -PUMP 3.5 BBLS SICP 800 PSI,MONITOR 30 MIN SICP 720 PSI -PUMP 3.5 BBLS SICP 800 PSI,MONITOR 30 MIN SICP 720 PSI -PUMP 3 BBLS SICP 810 PSI,MONITOR 30 MIN SICP 720 PSI -TOTAL OF 60 BBLS SQUEEZED INTO FORMATION 03:30 - 05:00 1.50 DRILL N DPRB 14,968.00 PROD1 BLEED OF PRESSURE FROM WELLBORE IN 2 BBL INCREMENTS UNTIL WELL IS STATIC PRIOR TO OPENING ANNULAR PREVENTOR AS PER WTL JOHN RALL -14.5 BBLS BLED BACK DURING EXHALE TEST --0 PSI ON DRILLPIPE AND CASING OPEN ANNULAR AND MONITOR WELL -WELL STATIC 05:00 - 07:30 2.50 DRILL P 14,968.00 PROD1 PICK UP HALLIBURTON RTTS WITH STORM VALVE(STORM PACKER)AND SET 1 STAND BELOW ROTARY TABLE TEST PACKER TO 250 PSI LOW,1,000 PSI HIGH FOR 5 MINUTES EACH -CONFIRMATION TESTS Printed 1/16/2012 4:09:34PM 1419,„ t ArnpflC6'4ALASKA SP €€ €€ Page 40 of 62 r Op �icotf uur teary Report € € 31-40001 € € Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C:(6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(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 BOPSUR P 14,968.00 PROD1 PULL WEAR RING FLUSH STACK TO CLEAR LCM FROM RAM CAVITIES CLEAR LINES OF RHELIANT MUD FOR TESTING BOPE RIG UP TO TEST BOPE 08:30 - 16:00 7.50 BOPSUR P PROD1 TEST BOPE PER AOGCC/BP REGULATIONS -250 PSI LOW,3,500 PSI HIGH ON ANNULAR -250 PSI LOW,4,000 PSI HIGH ON RAMS, CHOKE VALVES,AND SAFETY VALVES -5 MINUTES EACH TEST -CHART ALL TESTS -USE 4"TEST JOINT ON ANNULAR -USE 4"AND 4-1/2"TEST JOINTS ON RAMS -TESTED 2 4"XT-39 FOSV TEST WITNESSED BY DOYON TOOLPUSHER BOBBY INGRAM AND BP WSLS WILL TURNER AND BLAIR NEUFELD AOGCC INSPECTOR JOHN CRISP WAIVED WITNESS OF BOP TEST 16:00 - 18:00 2.00 BOPSUR P PROD1 RIG DOWN BOPE TESTING EQUIPMENT DRAIN BOP STACK AND BLOW DOWN CHOKE AND KILL LINES INSTALL WEAR RING CLEAR RIG FLOOR OF BOPE TESTING TOOLS 18:00 - 20:30 2.50 DRILL P 14,968.00 PROD1 PJSM ON PULLING STORM PACKER RUN 1 STAND OF DRILLPIPE TO TOP OF STORM PACKER INSTALL FOSV IN TOP OF STAND AND CLOSE VALVE ATTEMPT TO SCREW INTO STORM PACKER WITH NO SUCCESS REMOVE FOSV,TOP DRIVE UP TO STAND, AND WASH ON TOP OF STORM PACKER REINSTALL FOSV IN TOP OF STAND AND SCREW INTO STORM PACKER OPEN FOSV AND CHECK FOR FLOW INSIDE DRILLPIPE -WELL ON VACUUM REMOVE FOSV FROM DRILLPIPE AND LATCH UP ELEVATORS PULL AND RELEASE STORM PACKER -RELEASED AT 240K UP WT. -LOST 1 BBL WHEN PACKER UNSEATED FLOW CHECK WELL FOR 10 MINUTES -WELL STATIC PULL AND LAY DOWN STORM PACKER ASSEMBLY 20:30 - 21:30 1.00 DRILL N DPRB 14,968.00 PROD1 RIH FROM 12,258'TO 12,600'MD TO PERFORM ARCHER DIAGNOSTIC 21:30 - 23:00 1.50 DRILL N RREP PROD1 ATTEMPT TO BRING CAT#2 ONLINE -DIFFICULTIES GETTING CAT#2 IN SYNC WITH CAT#1 WARM UP CAT#3 AND SYNC WITH CAT#1 RIH TO 12,600'MD TO PERFORM ARCHER DIAGNOSTIC 23:00 - 00:00 1.00 DRILL N DPRB 14,968.00 PROD1 PERFORM ARCHER DIAGNOSTIC AND CIRCULATE BOTTOMS-UP -280 GPM,3,950 PSI -DYNAMIC LOSSES DURING CIRCULATION: 57 BBUHR Printed 1/16/2012 4:09:34PM Page 41 of 62 North America -ALASKA- BP Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/27/2011 00:00 - 00:30 0.50 DRILL N DPRB 14,968.00 PROD1 FINISH CIRCULATING BOTTOMS-UP AND ARCHER DIAGNOSTIC -280 GPM,3,950 PSI -9.9 PPG MUD WT IN AND OUT -DYNAMIC LOSSES DURING CIRCULATION: 57 BBUHR FINGERPRINT FLOWBACK TO CONFIRM WELLBORE BREATHING 00:30 - 03:00 2.50 DRILL N DPRB 14,968.00 PROD1 RIH FROM 12,600'TO 15,243'MD 03:00 - 03:30 0.50 DRILL N DPRB 1,968.00 PROD1 STAGE UP PUMPS TO DRILLING RATE AND PERFORM ARCHER DIAGNOSTIC 280 GPM,4,100 PSI -130 RPM,TQ 13K -DYNAMIC LOSS RATE WHILE PERFORMING ARCHER DIAGNOSTIC: 100 BBUHR CIRCULATE BOTTOMS-UP WHILE PERFORMING DIAGNOSTIC 03:30 - 04:30 1.00 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 15,305'TO 15,335'MD -DYNAMIC LOSSES: 140 BBUHR, INCREASING TO 220 BBUHR AT END OF STAND CONSULT WITH ODE AND WTL ON PLAN FORWARD 04:30 - 09:00 4.50 DRILL N DPRB ` 14,968.00 PROD1 FINGERPRINT CONNECTION TO CONFIRM WELL STILL BREATHING PUMP OUT OF HOLE FROM 15,335' 12,444'MD -HEADING TO WINDOW SIM-OPS:BUILD FORM-A-BLOK PILL FOR UPCOMING SQUEEZE OPERATIONS 09:00 - 09:30 0.50 DRILL N DPRB 14,968.00 PROD1 CIRCULATE BOTTOMS-UP -188 GPM,1,680 PSI -9.9 PPG MUD WT IN AND OUT -FINGERPRINT WELL AFTER CIRCULATING 09:30 - 19:00 9.50 DRILL N DPRB 14,968.00 PROD1 POOH FROM 12,444'TO 338'MD -JARS/BHA 1 STAND BELOW BOP STACK FLOW CHECK WELL FOR 10 MINUTES -WELL STATIC HELD D1 KICK WHILE TRIPPING DRILL 19:00 - 22:00 3.00 DRILL N DPRB 14,968.00 PROD1 LAY DOWN BHA#9 AS FOLLOWS -SMITH HYDRA-JARS -CROSSOVER -WELL COMMANDER CIRC SUB -3X 4-3/4"NON-MAG FLEX COLLARS -PULL RADIOACTIVE SOURCE FROM ADN475 LWD TOOL -ADN475 -IMPULSE MWD -PERISCOPE -PD FLEX -PD RECEIOVER -POWERDRIVE ARCHER ROTARY STEERABLE -6-1/8"SMITH MDi513 LUBPX BIT BIT GRADE: 1-1-ER-A-X-I-NO-HP Printed 1/16/2012 4:09:34PM North America-ALASKA- BP, Page 42 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:00 - 23:00 1.00 DRILL N DPRB 14,968.00 PROD1 CLEAR RIG FLOOR OF BHA#9 COMPONENTS CLEAN RIG FLOOR BLOW DOWN CHOKE MOBILIZE BHA#10 COMPONENTS TO RIG FLOOR 23:00 - 23:30 0.50 DRILL N DPRB 14,968.00 PROD1 MAKE UP SQUEEZE BHA AS FOLLOWS: -4"STACK WASHER -4"XT-39 PIN X 3-12"IF BOX CROSSOVER -6"OD INTEGRAL BLADE STABILIZER -3-1/2"IF PIN X 4"XT-39 BOX CROSSOVER TOTAL BHA LENGTH: 13.00' 23:30 - 00:00 0.50 DRILL N DPRB 14,968.00 PROD1 RIH FROM 13'TO 1,039'MD 11/28/2011 00:00 - 05:30 5.50 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO RIH FROM 1,039'TO 12,492'MD HELD UNANNOUNCED D1 KICK WHILE TRIPPING DRILL 05:30 - 07:30 2.00 DRILL P PROD1 SLIP AND CUT DRILLING LINE SERVICE TOP DRIVE, BLOCKS,AND CROWN. 07:30 - 10:30 3.00 DRILL N DPRB 14,968.00 PROD1 RIH FROM 12,492'TO 13,779'MD -ENCOUNTER TIGHT SPOT PUMP AND ROTATE THROUGH TIGHT SPOT 84 GPM,870 PSI 20 RPM,TQ 12K CONTINUE TO RIH FROM 13,779'TO 14,051' MD 10:30 - 12:00 1.50 DRILL N DPRB 14,968.00 PROD1 PUMP OUT FROM 14,051'TO 13,056'MD DUE TO LEVEL 1 SITUATION ON ANOTHER RIG -84 GPM,760 PSI 12:00 - 12:30 0.50 DRILL P PROD1 LUBRICATE RIG 12:30 - 13:00 0.50 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO PUMP OUT OF HOLE FROM 13,056'TO 12,961'MD DUE TO LEVEL 1 SITUATION ON ANOTHER RIG -84 GPM,890 PSI RECEIVED AUTHORIZATION TO RUN BACK IN HOLE FROM ANCHORAGE OFFICE 13:00 - 19:00 6.00 DRILL N DPRB 14,968.00 PROD1 RIH FROM 12,961'TO 13,521'MD -ENCOUNTER TIGHT SPOT AGAIN WASH AND REAM DOWN FROM 13,521'TO 14,919'MD -125 GPM,890 PSI -60 RPM,TQ 11K HELD D1 KICK WHILE TRIPPING DRILL 19:00 - 21:00 2.00 DRILL N DPRB 14,968.00 PROD1 BACKREAM BACK TO 14,733'MD THEN RIH TO 14,826'MD TO ENSURE CLEAN HOLE -125 GPM,990 PSI -60 RPM,TQ 11K 21:00 - 22:30 1.50 DRILL N DPRB 14,968.00 PROD1 HOLD PJSM ON SQUEEZE OPERATION FLOOD CHOKE MANIFOLD -FINGERPRINT WHILE PREPARING FOR SQUEEZE JOB SPOT 32 BBLS 40 LB/BBL CONVENTIONAL LCM PILL FOLLOWED IMMEDIATELY BY 94 BBLS 40 LB/BBL FORM-A-BLOK PILL -100 GPM,700 PSI CHASE WITH MUD AND SPOT PILLS AT STACK WASHER -90 GPM,1,000 PSI Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 43 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(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 DRILL N DPRB 14,968.00 PROD1 CLOSE ANNULAR AND OPEN HCR CHOKE SQUEEZE AWAY LCM AND FORM-A-BLOK PILLS -42 GPM(10 SPM) -CAUGHT PRESSURE ON ANNULUS 2 STROKES(0.2 BBLS)INTO SQUEEZE -60 BBLS SQUEEZED AWAY AT MIDNIGHT --830 PSI CASING PRESSURE 11/29/2011 00:00 - 05:00 5.00 DRILL N DPRB 14,968.00 PROD1 CONTINUE SQUEEZE OPERATIONS WITH LCM/FORM-A-BLOK TANDEM PILLS -TARGET 900 PSI SQUEEZE PRESSURE BEFORE HOLDING -PUMP 78 BBLS SICP 900 PSI,MONITOR 30 MIN SICP 820 PSI -PUMP 9 BBLS SICP 900 PSI,MONITOR 30 MIN SICP 850 PSI -PUMP 6 BBLS SICP 900 PSI,MONITOR 30 MIN SICP 850 PSI -PUMP 7 BBLS SICP 910 PSI,MONITOR 30 MIN SICP 870 PSI -PUMP 6 BBLS SICP 920 PSI,MONITOR 30 MIN SICP 880 PSI DISCUSS SITUATION WITH ODE @ 04:00 -22 BBLS LEFT TO CLEAR DRILLPIPE -DRILLPIPE HAS BEEN STATIONARY FOR 7 HRS CONTINUE SQUEEZE OPERATIONS WITH LCM/FORM-A-BLOK TANDEM PILLS -PUMP 22 BBLS SICP 980 PSI,MONITOR 30 MIN SICP 920 05:00 - 07:30 2.50 DRILL N DPRB 14,968.00 PROD1 BLEED OFF PRESSURE FROM WELL THROUGH CHOKE IN 2 BBL INCREMENTS UNTIL NO FLOW AND ZERO PRESSURE ON DRILLPIPE AND CASING -14.5 BBLS TOTAL BLED OFF WELL -OPEN UP WELL AND MONITOR,WELL STATIC 07:30 - 09:00 1.50 DRILL N DPRB 14,968.00 PROD1 BREAK CIRCULATION AND CBU STAGING PUMPS TO 4 BPM,1380 PSI -LOSS RATE @ 85 BPH 09:00 - 10:30 1.50 DRILL N DPRB 14,968.00 PROD1 PUMP IN THE HOLE FROM 14,826'TO 15,335' -2 BPM,380 PSI,40 RPM,10K TQ 10:30 - 14:30 4.00 DRILL N DPRB 14,968.00 PROD1 ROTATE AND RECIPROCATE WHILE CIRCULATING ON BOTTOM STAGING PUMPS TO BPM„1250 PSI -RPM 40,TQ 10K 14:30 - 16:00 1.50 DRILL N DPRB 14,968.00 PROD1 RACK BACK ON STAND,MAKE UP HEAD PIN AND RIG UP FOR CEMENT JOB 16:00 - 17:00 1.00 DRILL N DPRB 14,968.00 PROD1 PUMP 5 BBLS OF MUD PUSH AND PRESSURE TEST LINES TO 4000 PSI -PUMP 30 BBLS OF 15.8 PPG G+ADDITIVES CEMENT -PUMP 5 BBLS OF MUD PUSH -SHUT DOWN FLUSH LINES WITH FRESH WATER TO ROCK WASHER 17:00 - 17:30 0.50 DRILL N DPRB 14,968.00 PROD1 MAKE UP TOP DRIVE AND CHASE WITH 125 BBLS OF MUD -GPM 152, PSI 700 Printed 1/16/2012 4:09:34PM • North America -ALASKA- BP Page 44 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:30 - 18:30 1.00 DRILL N DPRB 14,968.00 PROD1 PUMP OUT OF HOLE SPOTTING CEMENT FROM 15,335'TO 14,454' -GPM 72, PSI 490 TOTAL OF 35 BBLS PUMPED -ESTIMATED TOC @ 14,511' 18:30 - 19:30 1.00 DRILL N DPRB 14,968.00 PROD1 PULL OUT OF HOLE FROM 14,454'TO 14,083' 19:30 - 21:30 2.00 DRILL N DPRB 14,968.00 PROD1 SQUEEZE CEMENT INTO FORMATION -PUMP 5 BBLS DOWN DRILL PIPE -GPM 21, PSI 330, HOLD FOR 30 MIN PUMP REMAINDER OF SQUEEZE DOWN BACKSIDE -PUMP EVERY 15 MIN -GPM 64,2.5 BBLS HOLDING FOR 15 MIN EACH TIME -PUMP 2.5 BBLS 430 PSI, HOLD 15 MIN 380 PSI -PUMP 2.5 BBLS 330 PSI, HOLD 15 MIN 250 PSI -PUMP 2.5 BBLS 580 PSI, HOLD 15 MIN 670 PSI -PUMP 2.5 BBLS 580 PSI, HOLD 15 MIN 710 PSI -TOTAL OF 12.5 BBLS PUMPED -ESTIMATED TOC NOW 14,868',100'ABOVE FAULT 21:30 - 00:00 2.50 DRILL N DPRB 14,968.00 PROD1 HOLD PRESSURE ON ANNULUS UNTIL CEMENT REACHES 500 PSI COMPRESSIVE STRENGTH,ROTATING STRING EVERY 15 MIN 11/30/2011 00:00 - 02:00 2.00 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO HOLD PRESSURE ON ANNULUS UNTIL CEMENT REACHES 500 PSI COMPRESSIVE STRENGTH,ROTATING STRING EVERY 15 MIN 02:00 - 04:00 2.00 DRILL N DPRB 14,968.00 PROD1 BREAK CIRCULATION CBU STAGING PUMPS UP -2 BPM,760 PSI, LOSS RATE 22 BPH -4 BPM,1330 PSI, LOSS RATE 47 BPH -5 BPM,1850 PSI, LOSS RATE 75 BPH WHILE CIRCULATING DRILL STRING PACKING OFF AND PRESSURING UP, UNABLE TO CIRCULATE,MADE SEVERAL ATTEMPTS TO GAIN CIRCULATE,DRILL STRING PACKED OFF 04:00 - 06:00 2.00 DRILL N DPRB 14,968.00 PROD1 PULL OUT OF HOLE FROM 14086'TO WINDOWAT 12399'. 06:00 - 12:00 6.00 DRILL N RREP 12,399.00 PROD1 REMOVE THE STANDPIPE AND KELLY HOSE TO REPAIR WASHED OUT SECTION OF THE STANDPIPE. 12:00 - 13:00 1.00 DRILL N RREP 12,399.00 PROD1 RIG UP TEST EQUIPMENT FOR THE STAND PIPE VALVE#35. TEST TO 250 PSI LOW AND 4000 PSI HIGH FOR 5 MINUTES EACH TEST. GOOD TEST. 13:00 - 13:30 0.50 DRILL N DPRB 14,968.00 PROD1 BLOW DOWN THE CHOKE AND KILL LINE. RIG DOWN THE TEST EQUIPMENT. 13:30 - 22:00 8.50 DRILL N DPRB 14,968.00 PROD1 FLOW CHECK THE WELL FOR 10 MINUTES. STATIC. PULL OUT OF THE HOLE ON ELEVATORS MONITORING THE WELL FOR 10 MINUTES EVERY 1000'. DROPPED 2.375" DRIFT WITH TAIL AT 7926'. 22:00 - 22:30 0.50 DRILL N DPRB 14,968.00 PROD1 FLOW CHECK THE WELL. STATIC. RIG UP THE SUPER TUGGER. 22:30 - 00:00 1.50 DRILL N DPRB 14,968.00 PROD1 CONTINUE PULLING OUT OF THE HOLE RACKING BACK 4"DRILL PIPE. FOUND THE DRIFT AT STAND#24. STARTED SEEING CEMENT DEBRIS AT STAND#22. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 45 of 62 • Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/1/2011 00:00 - 02:00 2.00 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO PULL OUT OF HOLE FROM 1878'TO SURFACE,FLOW CHECKING EVERY 1000'PULLED -STACK WASHER WAS FULL OF CEMENT DEBIS AND FOAM WIPER BALL DEBRIS 02:00 - 02:30 0.50 DRILL N DPRB 14,968.00 PROD1 CLEAN AND CLEAR FLOOR, REMOVE CEMENT FROM STACK WASHER -MOSES CREW HELD FIRE DRILL,CRT 110 SEC. 02:30 - 10:00 7.50 DRILL N RREP 12,399.00 PROD1 PICKUP AND INSTALL STANDPIPE AND KELLY HOSE 10:00 - 12:30 2.50 DRILL N DPRB 14,968.00 PROD1 RIG UP AND TEST ANNULAR TO 250 PSI/ 3500 PSI FOR 5 MINUTES EACH TEST WITH THE 3.5"TEST JOINT. GOOD TEST. TEST THE UPPER AND LOWER RAMS WITH THE 3.5"TEST JOINT TO 250 PSI/4000 PSI FOR 5 MINUTES EACH TEST. GOOD TEST. 12:30 - 13:00 0.50 DRILL N DPRB 14,968.00 PROD1 RIG DOWN TESTING EQUIPMENT,SUCK OUT THE BOP STACK AND INSTALL THE WEAR RING. 13:00 - 15:30 2.50 DRILL N DPRB 14,968.00 PROD1 CLEAR THE RIG FLOOR OF ALL UN-NEEDED TOOLS FOR UPCOMING OPERATIONS AND RIG UP TO RUN 3.5"TC-II TAILPIPE ON 4" DRILLPIPE. 15:30 - 00:00 8.50 DRILL N DPRB 14,968.00 PROD1 PICK UP AND RUN IN THE HOLE WITH 4.5" P&A ECP ASSEMBLY ON 1207.25'OF 3.5"TC-II TAILPIPE CROSSED OVER TO 4"DRILL PIPE TO 4507'. 12/2/2011 00:00 - 09:30 9.50 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO RUN IN THE HOLE WITH 4.5" P&A ECP ASSEMBLY ON 1207.25'OF 3.5"TC-II TAILPIPE CROSSED OVER TO 4"DRILL PIPE FROM 4507'-12801'FILLING THE PIPE EVERY 5 STANDS. 09:30 - 11:00 1.50 DRILL N DPRB 14,968.00 PROD1 DROP THE DART AS PER BAKER REP TO RELEASE THE ECP. PUMP THE DART DOWN AT 2 BPM WITH 950 PSI. PUMPED A TOTAL OF 127 BBLS SLOWING THE PUMPS TO 1 BPM WITH 470 PSI TO LAND THE DART DURING THE LAST 10 BBLS PUMPED. 11:00 - 11:30 0.50 DRILL N DPRB 14,968.00 PROD1 PRESSURE UP TO 1250 PSI AS PER BAKER REP, SEE THE ECP INFLATE. PRESSURE UP TO 3200 PSI AND RELEASE FROM THE PACKER. 11:30 - 12:30 1.00 CEMT N DPRB 14,968.00 PROD1 CIRCULATE AT 3 BPM WITH 830 PSI. 12:30 - 13:00 0.50 CEMT N DPRB 14,968.00 PROD1 MIX AND PUMP 5 BBLS OF 13 PPG MUD PUSH. PRESSURE TEST THE LINES TO 4000 PSI. PUMP 15 REMAINING BBLS OF 13 PPG MUD PUSH FOLLOWED BY 24.5 BBLS(138 SX) OF 17#CLASS-G KICK OFF PLUG CEMENT (1.00 CU/FT SX YIELD).CHASE THE CEMENT 5 BBLS OF 13 PPG MUD PUSH AND BREAK CONNECTION AND DROP 4"AND 6"FOAM BALLS. 13:00 - 13:30 0.50 CEMT N DPRB 14,968.00 PROD1 DISPLACE THE CEMENT WITH 120 BBLS OF 9.9 PPG RHELIANT MUD AT 6 BPM AT 1880 PSI. 13:30 - 15:00 1.50 CEMT N DPRB 14,968.00 PROD1 PULL OUT OF THE HOLE SLOWLY TO 12102'. APPROX. 100'ABOVE THE CEMENT AND BREAK CIRCULATION AND WASH DOWN TO 12365'AT 7 BPM WITH 2610 PSI. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 46 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE (DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 16:30 1.50 CEMT N DPRB 14,968.00 PROD1 CIRCULATE BOTTOMS UP AT 7 BPM WITH 2600 PSI. 16:30 - 19:00 2.50 CEMT N DPRB 14,968.00 PROD1 PUMP OUT OF THE HOLE DUE TO SWABBING FROM 12,365'TO 10,537' -GPM 130,PSI 560 19:00 - 20:30 1.50 CEMT N DPRB 14,968.00 PROD1 CIRCULATE BOTTOMS UP WHILE MOVING CEMENTED PIPE IN DERRICK -GPM 190, PSI 1110 20:30 - 23:30 3.00 CEMT N DPRB 14,968.00 PROD1 CONTINUE TO PULL OUT OF HOLE FROM 10,537'TO 8200' 23:30 - 00:00 0.50 CEMT N DPRB 14,968.00 PROD1 MONITOR WELL,PUMP DRY JOB 12/3/2011 00:00 - 02:00 2.00 CEMT N DPRB 14,968.00 PROD1 CONTINUE TO PULLOUT OF HOLE FROM 8200'TO 1245' 02:00 - 03:00 1.00 CEMT N DPRB 14,968.00 PROD1 RIG UP FLOOR TO LAY DOWN 3.5"TAIL PIPE 03:00 - 06:00 3.00 CEMT N DPRB 14,968.00 PROD1 LAY DOWN 3.5"TAILPIPE FROM 1245'TO SURFACE 06:00 - 07:00 1.00 CEMT N DPRB 14,968.00 PROD1 CLEAN AND CLEAR FLOOR OF ALL HANDLING EQUIPMENT, BAKER RUNNING TOOL 07:00 - 10:30 3.50 CEMT N DPRB 14,968.00 PROD1 MAKE UP MULE SHOE, RIH WITH 6 STANDS OF CEMENTED PIPE,ATTEMPT TO CIRCULATE, PACKED OFF, PULL OUT LOOKING FOR BLOCKAGE,ATTEMPT TO CLEAR PIPE,WITH ROTATION AND PUMPING THROUGH, UNSUCCESSFUL 10:30 - 12:30 2.00 CEMT N DPRB 14,968.00 PROD1 DECISION MADE TO RUN REST OF CEMENTED PIPE IN HOLE TO 2144' 12:30 - 16:30 4.00 CEMT N DPRB_ 14,968.00 PROD1 PULL OUT OF HOLE AND LAY DOWN DRILL PIPE 72 JOINTS TOTAL 16:30 - 17:30 1.00 CEMT N DPRB 14,968.00 PROD1 CLEAR FLOOR OF CEMENT RESIDUE AND LAY DOWN TOOLS 17:30 - 18:30 1.00 CEMT P PROD1 SERVICE DRAWWORKS 18:30 - 00:00 5.50 CEMT N DPRB 14,968.00 PROD1 MAKE UP CLEAN OUT BHA AND RUN IN HOLE TO 5682'FILLING PIPE EVERY 20 STANDS -6.125 HUGHES BIT -BIT SUB -STRING MILL 6.125 -3 JOINTS OF 4"HWDP 12/4/2011 00:00 - 05:00 5.00 CEMT N DPRB 14,968.00 PROD1 CONTINUE TO RUN IN THE HOLE ON 4"DRILL PIPE FROM 5682'-12,210' FILLING EVERY 20 STANDS. 05:00 - 07:00 2.00 CEMT P PROD1 SLIP AND CUT DRILLING LINE. 07:00 - 10:00 3.00 CEMT N DPRB 14,968.00 PROD1 WASH DOWN FROM 12,210'TO 12,480'NO INDICATION OF HARD CEMENT -PUW 210,SOW 95, ROT 130,TQ 9K -GPM 235 PSI 2300 SPR TAKEN @ 12,210'MD,6751'MW 9.9 PPG PUMP 1 @ 20 SPM 510 PSI,30 SPM 790 PSI 10:00 - 11:00 1.00 CEMT N DPRB 14,968.00 PROD1 CIRCULATE BOTTOMS UP -GPM 200, PSI 1650 11:00 - 15:30 4.50 CEMT N DPRB 14,968.00 PROD1 PJSM WITH ALL HANDS,DISPLACE WELL OVER TO 8.6 PPG POWER PRO WATER BASE MUD SPR TAKEN @ 12,486'MD,6751'MW 8.6 PPG PUMP 1 ©20 SPM 400 PSI,30 SPM 480 PSI PUMP 2 • 20 SPM 400 PSI,30 SPM 480 PSI Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 47 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:30 - 20:00 4.50 CEMT N DPRB 14,968.00 PROD1 INSTALL FOSV AND CLEAN SURFACE EQUIPMENT, CIRCULATE THROUGH HOLE FILL,MONITOR WELL,WOC 20:00 - 23:00 3.00 CEMT N DPRB 14,968.00 PROD1 FLOW CHECK WELL, RUN IN HOLE FROM 12,486'TO 12,496' -PUW 205K,SOW 110K -TAGGED UP AT 12496' -PUT 5K DOWN PICK UP WT. INCREASED TO 220K -PUT 10K DOWN PICK UP WT. INCREASED TO 225K -PUT 15K DOWN PICK UP WT. INCREASED TO 245K -BROUGHT PUMP TO 146 GPM,550 PSI -TAGGED UP AT 12,502,25K WOB,AFTER A FEW SECONDS WT FELL OFF AND PRESSURE INCREASED TO 1100 PSI. -POOH TO 12,486'CIRCULATE BOTTOMS UP -GPM 230,870 PSI 23:00 - 00:00 1.00 CEMT N DPRB 14,968.00 PROD1 DRILLPIPE MANAGEMENT WHILE WOC -PULL OUT OF HOLE FROM 12,486'TO 12,024' 12/5/2011 00:00 - 01:00 1.00 CEMT N DPRB 14,968.00 PROD1 CONTINUE TO PULL OUT OF HOLE FROM 12,024'TO 10,342' 01:00 - 04:00 3.00 CEMT` N DPRB 14,968.00 PROD1 PICK UP 4"DRILLPIPE FROM PIPESHED FROM 10,342'TO 12,486'72 JOINTS TOTAL 04:00 - 07:00 3.00 CEMT N DPRB 14,968.00 PROD1 WAIT ON CEMENT TO GAIN COMPRESSIVE STRENGTH. 07:00 - 08:00 1.00 CEMT N DPRB 14,968.00 PROD1 RUN IN THE HOLE LOOKING FOR HARD CEMENT. PUMPING AT 3 BPM WITH 520 PSI/ 6BPM WITH 1080 PSI. DRILL UP CEMENT STRINGERS FROM 12502'-12550'. FIND HARD CEMENT AT 12646'WITH 10K WOB AND TORQUE 18K/ON AND 15K OFF. SMALL CEMENT CHUNKS BACK TO SURFACE. 08:00 - 09:00 1.00 CEMT N DPRB 14,968.00 PROD1 BACKREAM OUT OF THE HOLE FROM 12646'- 12496'. 09:00 - 10:00 1.00 CEMT N DPRB 14,968.00 PROD1 CIRCULATE A BOTTOMS UP AT 7 BPM WTIH 1250 PSI ROTATING AT 50 RPM. 10:00 - 17:30 7.50 CEMT N DPRB 14,968.00 PROD1 MONITOR THE WELL FOR 10 MINUTES. STATIC. PULL OUT OF THE HOLE FROM 12496'-100'. 17:30 - 18:00 0.50 CEMT N DPRB 14,968.00 PROD1 MONITOR THE WELL FOR 10 MINUTES. STATIC. LAY DOWN CEMENT DRILL OUT BHA. 18:00 - 19:00 1.00 CEMT N DPRB 14,968.00 PROD1 PJSM,MOBILIZE RUNNING EQUIPMENT FOR 3.5"TC-II TAIL PIPE. 19:00 - 22:30 3.50 CEMT N DPRB 14,968.00 PROD1 RUN IN HOLE WITH 3.5"TC II TAIL PIPE TO 1221'TOTAL OF 40 JOINTS 22:30 - 23:00 0.50 CEMT N DPRB 14,968.00 PROD1 CLEAR FLOOR OF TUBING HANDLING EQUIPMENT 23:00 - 00:00 1.00 CEMT N DPRB 14,968.00 PROD1 RUN IN HOLE WITH TAIL PIPE ON 4"DRILL PIPE FROM 1221'TO 3528' 12/6/2011 00:00 - 00:30 0.50 CEMT N DPRB 14,968.00 PROD1 SERVICE AND INSPECT TOP DRIVE, BLOCKS, AND DRAW WORKS. 00:30 - 05:00 4.50 CEMT N DPRB 14,968.00 PROD1 RUN IN HOLE WITH TAIL PIPE ON 4"DRILL PIPE FROM 3528'-12641'. FILLING PIPE EVERY 20 STANDS. KICK WHILE TRIPPING DRILL CREW RESPONDED IN 57 SEC. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 48 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 06:00 1.00 CEMT N DPRB 14,968.00 PROD1 CIRCULATE AND CONDITION MUD IN PREPARATION FOR CEMENT PLUG AT 210 GPM 670 PSI PUW 245K SOW 93. 06:00 - 09:00 3.00 CEMT N DPRB 14,968.00 PROD1 MIX AND PUMP 5 BBLS OF 12.5 PPG MUD PUSH. PRESSURE TEST THE LINES TO 3500 PSI. DROP FIRST LINER WIPER DART PUMP 8.5 REMAINING BBLS OF 12.5 PPG MUD PUSH FOLLOWED BY 22 BBLS(124 SX)OF 17# CLASS-G KICK OFF PLUG CEMENT(1.00 CU/FT SX YIELD).CHASE THE CEMENT 5.5 BBLS OF 12.5 PPG MUD PUSH AND BREAK CONNECTION AND DROP SECOND LINER WIPER DART.DISPLACE WITH 116 BBLS OF 8.6 PPG POWER VIS. 09:00 - 09:30 0.50 CEMT N DPRB 14,968.00 PROD1 PULL OUT OF THE HOLE ON ELEVATORS FROM 12641'-11932'. 09:30 - 11:00 1.50 CEMT N DPRB 14,968.00 PROD1 CIRCULATE 1.5 BOTTOMS UP AT 300 GPM 920 PSI. 11:00 - 12:00 1.00 CEMT N DPRB 14,968.00 PROD1 PULL OUT OF THE HOLE ON ELEVATORS FROM 11932'-10996'.PULL 5 STANDS MONITORING FOR SWABBING. 12:00 - 16:30 4.50 CEMT N DPRB 14,968.00 PROD1 CONTINUE TO PULL OUT OF THE HOLE FROM 10996'-1221'. 16:30 - 17:00 0.50 CEMT N DPRB 14,968.00 PROD1 FLOW CHECK WELL FOR 10 MIN AND CONFIRM NO FLOW RIG UP CASING TOOLS TO LAY DOWN 3.5"TCII 9.2#TUBING CHANGE OUT HANDELING EQUIPMENT. 17:00 - 19:00 2.00 CEMT N DPRB 14,968.00 PROD1 PJSM,LAY DOWN 3.5"9.2#TCII TUBING. 19:00 - 21:30 2.50 CEMT N DPRB 14,968.00 PROD1 RIG DOWN TUBING RUNNING TOOLS, MOBILIZE TOOLS FOR NEXT BHA TO THE RIG FLOOR.CHANGE OUT THE HANDELING EQUIPMENT. 21:30 - 00:00 2.50 CEMT N DPRB 14,968.00 PROD1 WAITING ON SMOOTH GAUGE WINDOW MILL. CLEANING BLOCKS,TOP DRIVE,TORQUE TUBE.AND RIG FLOOR. 12/7/2011 00:00 - 00:30 0.50 CEMT N DPRB 14,968.00 PROD1 WAIT ON MILL, CLEAN RIG FLOOR. 00:30 - 01:00 0.50 CEMT N DPRB 14,968.00 PROD1 FLUSH STACK AT 525 GPM 30 RPM AND MOBILIZE CLEANOUT BHA TO RIG FLOOR. 01:00 - 02:00 1.00 CEMT N DPRB 14,968.00 PROD1 REMOVE STACK WASHER AND MAKE UP CLEANOUT BHA AS FOLLOWS: -6.125"SMITH XR20 -BIT SUB -6.125"SMOOTH GAUGE SPIRAL MILL -CROSSOVER -3 JTS 4"HWDP 02:00 - 07:30 5.50 CEMT N DPRB 14,968.00 PROD1 RUN IN THE HOLE ON 4"DRILL PIPE.TO 11838'FILLING PIPE EVERY 25 STANDS. 07:30 - 10:30 3.00 CEMT N DPRB 14,968.00 PROD1 OBTAIN SLOW PUMP RATES,PUW 225K, SOW 90,ROT 132K TORQUE ON/OFF 13K/13K, PUMP AT 330 GPM 1680 PSI.WASH DOWN FROM 11838'-12200'TAKING WEIGHT.REAM FROM 12200'-12310'TAKING 15K WHILE ROTATING THE LAST 80'TO 12400'. SPR @ 11838'MD,8.7 PPG MW MUD PUMP#1 20 SPM=400 PSI/30 SPM 510 PSI MUD PUMP#2 20 SPM=400 PSI/30 SPM= 520 PSI Printed 1/16/2012 4:09:34PM North America -ALASKA BP Page 49 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:30 - 11:00 0.50 CEMT N DPRB 14,968.00 PROD1 BACK REAM OUT OF THE HOLE FROM 12400' -12307'AT 50 RPM WITH 330 GPM. 11:00 - 12:00 1.00 CEMT N DPRB 14,968.00 PROD1 CIRCULATE BOTTOMS UP AT 50 RPM PUMPING AT 290 GPM WITH 1600 PSI. 12:00 - 12:30 0.50 CEMT N DPRB 14,968.00 PROD1 PULL OUT OF THE HOLE FROM 12307'- 11838'. MONITORING THE WELL FOR SWABBING. 12:30 - 13:00 0.50 CEMT N DPRB 14,968.00 PROD1 FLOW CHECK THE WELL. STATIC. PUMP DRY JOB. BLOW DOWN THE TOP DRIVE. 13:00 - 16:00 3.00 CEMT N DPRB 14,968.00 PROD1 PULL OUT OF THE HOLE FROM 11838'-7170' ON ELEVATORS RACKING BACK 4"DRILL PIPE. 16:00 - 17:30 1.50 CEMT N DPRB 14,968.00 PROD1 MAKE UP RTTS TO 1 STAND OF DRILL PIPE AND RUN IN THE HOLE TO 90'. UP WT. 150K/ DOWN WT.82K. SET THE PACKER AND PRESSURE TEST TO 250 PSI FOR 5 MINUTES AND 1000 PSI FOR 5 MINUTES. GOOD TESTS. 17:30 - 20:30 3.00 CEMT N DPRB 14,968.00 PROD1 CHANGE OUT THE SAVER SUB ON THE TOP DRIVE AND PREPARE THE BRAKE BANDS FOR MPI INSPECTION. 20:30 - 23:00 2.50 CEMT N DPRB 14,968.00 PROD1 PREP DRAW WORKS FOR BRAKE INSPECTION AND RIG UP TO TEST BOPS. 23:00 - 00:00 1.00 BOPSUR N DPRB 14,968.00 PROD1 BOP DRILL TOOK 2 MIN 9 SEC.TEST GAS BUSTER,TOOK 6 BBLS TO FILL. BEGIN TESTING BOPS WITH 4"AND 4.5"TEST JOINTS 250 PSI 5 MIN 4000 PSI 5 MIN ON RAMS.ANNULAR TESTED TO 250 PSI 5 MIN 3500 PSI 5 MIN. 12/8/2011 00:00 - 08:00 8.00 BOPSUR N DPRB 14,968.00 PROD1 TEST BOPS WITH 4"AND 4.5" TEST JOINT TEST ANNULAR 250 PSI 5 MIN 3500 PSI 5 MIN. GOOD TEST.TEST TOP RAMS 3.5"X 6", BOTTOM RAMS 2-7/8"X 5"250 PSI 5 MIN 4000 PSI 5 MIN.GOOD TEST.TEST CHOKE VALVES 1-14, UPPER IBOP,MANUAL IBOP,2 4"FOSV, 4"DART VALVE,MANUAL CHOKE AND KILL VALVES,HCR CHOKE AND KILL VALVES, KILL LINE IN THE PITS, BLIND SHEAR RAMS ALL TO 250 PSI 5 MIN AND 4000 PSI 5 MIN.GOOD TESTS. 1500 PSI DRAWDOWN TEST ON THE MANUAL AND SUPER CHOKES FOR 5 MIN. SUPER CHOKE FAILED.REBUILT RETESTED. GOOD TEST. 08:00 - 08:30 0.50 BOPSUR N DPRB 14,968.00 PROD1 RIG DOWN TEST EQUIPMENT,BLOW DOWN CHOKE AND KILL LINES. 08:30 - 09:00 0.50 BOPSUR N DPRB 14,968.00 PROD1 REMOVE TEST PLUG,INSTALL WEAR RING AND RILD 09:00 - 10:30 1.50 CEMT N DPRB 14,968.00 PROD1 PJSM MU STORM PACKER RUNNING TOOL ON 1 STAND OF DRILL PIPE. INSTALL FOSV, CLOSE BAG, PULL UP 1'LET ELEMENT RELAX,CHECK FOR PRESSURE, REMOVE FOSV,OPEN BAG,PULL STORM PACKER TO RIG FLOOR,AND LAY DOWN STORM PACKER. HELD WELL KILL DRILL CREW RESPONDED IN 43 SEC. 10:30 - 12:00 1.50 CEMT N DPRB 14,968.00 PROD1 RUN IN HOLE FROM 7170'-9126'FILLING THE PIPE EVERY 20 STANDS. 12:00 - 14:00 2.00 CEMT N DPRB 14,968.00 PROD1 RUN IN HOLE FROM 9126'-12307'FILLING THE PIPE EVERY 20 STANDS. 14:00 - 15:00 1.00 CEMT N DPRB 14,968.00 PROD1 WASH DOWN TO 12400'. Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 50 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 17:00 2.00 CEMT N DPRB 14,968.00 PROD1 RUN IN HOLE AND TAG CEMENT AT 12400' AND DRILL TO 12500'PUMPING AT 327 GPM 1690 PSI,60 RPM TORQUE 12-13K AND 20K WOB. 17:00 - 18:00 1.00 CEMT N DPRB 14,968.00 PROD1 DRILL CEMENT FROM 12500'-12519'PUMPING AT 322 GPM 1750 PSI,30 RPM TORQUE 14-15K WOB 10K. 18:00 - 18:30 0.50 CEMT N DPRB 14,968.00 PROD1 PULL OUT OF HOLE FROM 12519'-12500' BACK REAMING AT 30 RPM 10K WOB SLOWLY RUN IN AND OUT OF WINDOW TO CONFIRM NO DRAG. RUN IN AND OUT OF WINDOW WITH NO ROTATION AND CONFIRMED NO DRAG. 18:30 - 19:30 1.00 CEMT N DPRB 14,968.00 PROD1 RACK BACK 1 STAND,CIRCULATE SURFACE TO SURFACE AT 317 GPM 1890 PSI WITH 60 RPM 15-16K TORQUE. 19:30 - 21:30 2.00 CEMT N DPRB 14,968.00 PROD1 BLOW DOWN TOP DRIVE, INSTALL FOSV,1 JOINT BELOW ROTARY TABLE,PJSM,SLIP AND CUT DRILLING LINE. 21:30 - 22:00 0.50 CEMT N DPRB 14,968.00 PROD1 FLOW CHECK WELL AND CONFIRM NO FLOW.PULL OUT OF HOLE 5 STAND. 22:00 - 00:00 2.00 CEMT N DPRB 14,968.00 PROD1 ATTEMPT TO PUMP DRY JOB.PRESSURE RAMPED UP QUICKLY.ESTABLISH PIPE MOVEMENT AND ROTATE AT 50 RPM STAGE PUMPS UP TO 173 GPM 1720 PSI AND BEGIN TO BACKREAM OUT OF HOLE.CONTINUE TO BACK REAM OUT TO 11744'STAGING PUMPS UP TO 309 GPM 2130 PSI WITH 50 RPM TORQUE 10-12K. 12/9/2011 00:00 - 00:30 0.50 CEMT N DPRB 14,968.00 PROD1 CONTINUE TO BACK REAM OUT FROM 11744'-11471'PUMPING AT 305 GPM 2130 PSI ROTATING AT 40 RPM TORQUE 10-11K. 00:30 - 06:00 5.50 CEMT N DPRB 14,968.00 PROD1 FLOW CHECK WELL FOR 10 MIN CONFIRM NO FLOW.PUMP DRY JOB AND BLOW DOWN TOP DRIVE, DROP 2-3/8"DRIFT DOWN THE DRILL PIPE. PULL OUT OF HOLE FROM 11471'-3000'. 06:00 - 06:30 0.50 CEMT N DPRB 14,968.00 PROD1 LAY DOWN 3 JOINTS OF HWDP, CROSSOVERS,MILL, BIT SUB,AND BIT. 06:30 - 08:00 1.50 CEMT N DPRB 14,968.00 PROD1 CLEAN BHA TOOLS,CLEAR FLOOR OF ALL TOOLS NOT NEEDED FOR UPCOMING OPPS, MOBILIZE BHA#13 COMPONENTS TO THE FLOOR. 08:00 - 10:30 2.50 CEMT N DPRB 14,968.00 PROD1 PJSM,MAKE UP BHA#13 AS FOLLOWS: -EP7258 HUGHES 6.125"BIT -SHORT PAC PDM 2.29 DEGREE -NM IB STABILIZER -2 NM FLEX PONY COLLAR -SLIMPULSE MWD -3 NM FLEX DRILL COLLARS -CROSS OVER 10:30 - 12:00 1.50 CEMT N DPRB 14,968.00 PROD1 RUN IN HOLE WITH 7 STANDS OF DRILL PIPE, PICK UP JARS,CONTINUE TO RUN IN HOLE TO 2062'FILLING PIPE 20 STANDS. Printed 1/16/2012 4:09:34PM North America -ALASKA-BP Page 51 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 17:30 5.50 CEMT N DPRB 14,968.00 PROD1 CONTINUE TO RUN IN HOLE WITH 4"DRILL PIPE FROM 2062'-12502'FILLING THE PIPE EVERY 20 STANDS.PUW 230K SOW 105K. EXIT WINDOW WITH NO PUMPS AND OBTAIN SLOW PUMP RATES. SPR @ 12504'MD 8.6 PPG MP#1 20 SPM= 1330 PSI 30 SPM=1620 PSI MP#2 20 SPM= 1270 PSI 30 SPM=1730 PSI 17:30 - 00:00 6.50 DRILL N DPRB 14,968.00 PROD1 TIME DRILL FROM 12520'-12536'AT 5'/HR.AT 12536 FORMATION SEEN ACROSS THE SHAKERS VERYIFY KICKOFF FROM PREVIOUSE WELLBORE. INCREASE ROP TO 10'/HR CONTINUE TO TIME DRILL FROM 12536-12553'. 12/10/2011 00:00 - 06:00 6.00 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO TIME DRILL FROM 12553'-12691'. BEGIN DRILLING ROTATING 1/4 TURN PER FOOT FROM 12680-12691'PUW 250K SOW 103K 250 GPM 1670 PSI OFF 1780 PSI OFF BOTTOM WOB 10-15K.AST 3.13 ART 1.48 ADT 4.61 JAR HRS 123.7.HELD TABLE TOP STRIPPING DRILL DURING PRE TOUR MEETING. 06:00 - 07:30 1.50 _ DRILL N DPRB 14,968.00 PROD1 AT 12691'STARTED TAKING WEIGHT WITH NO DIFFERENTIAL.PICK UP OFF BOTTOM DRILL PIPE PRESSURE INCREASED FROM 1675 PSI-2398 PSI.PULL 375K UP UNABLE TO PULL FREE.WORK 6K OF TORQUE DOWN. UNABLE TO PULL FREE. NOTIFY SUPERINTENDENT AND ENGINEER OF SITUATION.PICK UP AND STARTED FIRING JARS WITH 40K OVER PICK UP.COULD NOT PULL FREE WORK UP TO 80K OVER STRING WEIGHT TO FIRE JARS.UNABLE TO PULL FREE.STAGE PUMPS UP TO 250 GPM 2200 PSI PULL 80K OVER STRING WEIGHT AND JAR PIPE FREE. 07:30 - 09:00 1.50 DRILL N DPRB 14,968.00 PROD1 PUMP OUT OF HOLE TO 12473'AT 250 GPM AND 1650 PSI. SPR AT 12473'MD,6732 TVD 8.7 PPG MP#1 20 SPM=660 PSI,30 SPM=850 PSI MP#2 20 SPM=670 PSI,30 SPM=850 PSI 09:00 - 09:30 0.50 DRILL N DPRB 14,968.00 PROD1 RUN IN HOLE TO BOTTOM AT 12691'WITH NO ISSUES. 09:30 - 12:00 2.50 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO DRILL ROTATING 1/4 TURN PER FOOT FROM 12961'-12720'.PUW 220K SOW 100K 250 GPM 1580 PSI. INCORPERATED STEEL LUBE INTO THE FLUID SYSTEM AT 10 BPH. 12:00 - 16:00 4.00 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO DRILL ROTATING 1/4 TURN PER FOOT FROM 12720'-12782'.PUW 225K SOW 110K 250 GPM 1680 PSI AST 0 ART 1.57 JAR HRS 125.3 16:00 - 17:30 1.50 DRILL N DPRB 14,968.00 PROD1 FLOW CHECK WELL FOR 10 MIN.CONFIRMED NO FLOW.PUMP OUT OF HOLE FROM 12782'-12535'250 GPM 1650 PSI. 17:30 - 18:30 1.00 DRILL N DPRB 14,968.00 PROD1 PULL 5 STANDS ON ELEVATORS,PUMP A DRY JOB AND BLOW DOWN THE TOP DRIVE. 18:30 - 23:00 4.50 DRILL N DPRB 14,968.00 PROD1 PULL OUT OF HOLE ON ELEVATORS FROM 12036'-853'. Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 52 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 23:30 0.50 DRILL N DPRB 14,968.00 PROD1 LAY DOWN JARS AND MAKE UP SAFETY JOINT FOR BHA. MONITOR WELL. STATIC. 23:30 - 00:00 0.50 DRILL N DPRB 14,968.00 PROD1 PULL FROM 853'-171'.HOLD TABLE TOP RIG EVACUATION DRILL. 12/11/2011 00:00 - 01:00 1.00 DRILL N DPRB 14,968.00 PROD1 RACK BACK 1 STAND NON-MAG FLEX DRILL COLLARS, BREAK BIT,LAY DOWN MOTOR AND STABILIZER. 01:00 - 03:00 2.00 DRILL N DPRB 14,968.00 PROD1 MAKE UP BHA#13 AS FOLLOWS: -HYCALOG DTX611M 6.125 USED BIT -1.5 DEGREE MOTOR -IB STABILIZER -2 NM FLEX PONY DRILL COLLARS -SLIMPULSE MWD -3 NM FLEX DRILL COLLARS -CROSS OVER -21 JTS 4 DP -4-3/4"HYDRA JARS 03:00 - 12:00 9.00 DRILL N DPRB 14,968.00 PROD1 RUN IN HOLE AND SHOLLOW TEST MWD AT 1137'FILLING PIPE EVERY 20 STANDS. CONTINUE TO RUN IN HOLE FROM 1137'-12782'ORIENT TO RUN BHA THROUGH THE WINDOW. HELD KICK WHILE TRIPPING DRILL CREW RESPONDED IN 2 MIN 41 SEC. SPR AT 12433'MD,6707'TVD 8.6 PPG MP#1 20 SPM=540 PSI,30 SPM=710 PSI MP#2 20 SPM=540 PSI,30 SPM=730 PSI 12:00 - 17:30 5.50 DRILL N DPRB 14,968.00 PROD1 DRILL FROM 12782'-12946'. PUW 215,SOW 105, ROT 140,WOB 7,60 RPM TORQUE 15K ON 15K OFF. 17:30 - 18:30 1.00 DRILL N DPRB 14,968.00 PROD1 OBTAIN SPR,FLOW CHECK WELL FOR 10 MIN AND CONFIRM NO FLOW,BACK REAM OUT OF HOLE FROM 12946'-12740'60 RPM.PUMP OUT OF HOLE FROM 12740'-12540'.PULL THROUGH THE WINDOW WITHOUT PUMPS. . SPR AT 12946'MD,6803 TVD,8.8 PPG MP#1 20 SPM=590 PSI,30 SPM=810 PSI MP#2 20 SPM=560 PSI,30 SPM=870 PSI 18:30 - 00:00 5.50 DRILL N DPRB 14,968.00 PROD1 FLOW CHECK THE WELL FOR 10 MIN AND CONFIRM NO FLOW.PULL 5 STANDS ON ELEVATORS WATCHING FOR SWABBING. PUMP A DRY JOB AND CONTINUE TO PULL OUT OF THE HOLE TO 4700'.HELD KICK WHILE TRIPPING DRILL. 12/12/2011 00:00 - 02:00 2.00 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO PULL OUT OF HOLE FROM 4700'-176'. FLOW CHECK WELL AND CONFIRM NO FLOW. 02:00 - 03:30 1.50 DRILL N DPRB 14,968.00 PROD1 RACK BACK ONE STAND OF NM FLEX DRILL COLLARS, PJSM, LAY DOWN SLIMPULSE MWD,MOTOR,STABILIZER,NM FLEX PONY COLLARS. Printed 1/16/2012 4:09:34PM North America ALASKA- BP Page 53 of 62. Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:30 - 07:00 3.50 DRILL N DPRB 14,968.00 PROD1 CLEAR RIG FLOOR OF PREVIOUSE BHA, MOBILIZE TOOLS TO THE RIG FLOOR.PJSM. MAKE UP BHA#15 AS FOLLOWS: -MDI513 LUBPX SMITH 6.125"PDC BIT -POWERDRIVE ARCHER -PERISCOPE -IMPULSE MWD -ADN475 -3 NM FLEX DRILL COLLARS -BAKER PUMP OUT SUB -CROSSOVER -4-3/4"HYDRA-JARS 07:00 - 11:30 4.50 DRILL N DPRB 14,968.00 PROD1 RUN IN HOLE FROM 234'-6748'FILLING PIPE EVERY 10 STANDS. 11:30 - 12:00 0.50 DRILL N DPRB 14,968.00 PROD1 PJSM,SLIP AND CUT DRILLING LINE, INSTALL SAFETY VALVE 1 JOINT BELOW ROTARY TABLE. 12:00 - 13:30 1.50 DRILL N DPRB 14,968.00 PROD1 CUT 59.5'OF DRILLING LINE,SERVISE TOP DRIVE,BLOCKS,AND CROWN. 14:00 - 17:00 3.00 DRILL N DPRB 14,968.00 PROD1 RUN IN HOLE FROM 6748'-12723'FILLING EVERY JOINT. SPR 12431'MD,6706'TVD,MW 8.8 MP#1 20 SPM=460 PSI,30 SPM=660 PSI MP#2 20 SPM=470PSI,30 SPM=640 PSI 17:00 - 17:30 0.50 DRILL N DPRB 14,968.00 PROD1 CHECK SHOT SURVEYS EVERY 30'FROM 12723'-12880'AT 200 GPM 1370 PSI. 17:30 - 18:30 1.00 DRILL N DPRB 14,968.00 PROD1 MADD PASS FROM 12880'-12946'40 RPM,10K TORQUE,200 GPM,1370 PSI. 18:30 - 20:00 1.50 DRILL N DPRB 14,968.00 PROD1 DRILL FROM 12946'-13030'TAKING SURVEYS EVERY 30'.240 GPM 1690 PSI ON 1680 PSI OFF,120 RPM 17.5K ON 17.5K OFF BOTTOM, SOW 103K,PUW 208K,WOB 9K. 20:00 - 21:30 1.50 DRILL N HMAN 14,968.00 PROD1 GEOLOGIST AND PERISCOPE ENGINEER NOT RECIEVING DATA.WORK ON SURFACE SOFTWARE ISSUES. DRILL FROM 13030'-13067'DISCOVER MWD'S DEPTH IS OFF BY 8'. PULL UP AND RESHOOT PREVIOUS TWO SURVEYS. 21:30 - 23:00 1.50 DRILL N DPRB 14,968.00 PROD1 CONTINUE TO DRILL AHEAD FROM 13067'-13160'TAKING SURVEYS EVERY 30'. 240 GPM 1690 PSI ON 1680 PSI OFF,120 RPM 17.5K ON 17.5K OFF BOTTOM,SOW 103K, PUW 208K,WOB 9K.SURVEYS STILL DIRTY GIVING QUESTIONABLE VALUES. 23:00 - 00:00 1.00 DRILL N WAIT 14,968.00 PROD1 SURVEYS NOT CLEANING UP.WAIT ON SCHULMBERGER FOR SURVEY CORRECTIONS FROM TOWN.ROTATE AND RECIPROCATE AT 240 GPM,1390 PSI,40 RPM AND 10K TORQUE. 12/13/2011 00:00 - 04:00 4.00 DRILL N WAIT 14,968.00 PROD1 SURVEYS NOT CLEANING UP.WAIT ON SCHULMBERGER FOR SURVEY CORRECTIONS FROM TOWN. ROTATE AND RECIPROCATE AT 240 GPM,1390 PSI,40 RPM AND 10K TORQUE. DRILL DOWN ONE JOINT SHOOT SURVEY. SURVEY NO GOOD.WAIT ON SCHLUMBERGER TO CORRECT. 04:00 - 05:00 1.00 DRILL N WAIT 14,968.00 PROD1 PULL OUT OF HOLE TO THE SHOE.WAITING ON SURVEY CORRECTIONS. INFORM TOWN OF SURVEY SITUATION. Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 54 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad • Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 06:00 1.00 DRILL N WAIT 14,968.00 PROD1 RUN BACK IN HOLE TO BOTTOM. 06:00 - 12:00 6.00 DRILL N DPRB 14,968.00 PROD1 DIRECTIONALLY DRILL FROM 13,190'TO 13,442'MD.CORRECTING EVERY OTHER SURVEY TO ACCOUNT FOR AZIMUTH. -PUW 183K,SOW 108K,ROT 140K -249 GPM,1,740 PSI ON,1,720 PSI OFF -140 RPM,TQ 15K ON,14K OFF -8K WOB -MUD WT 8.6 PPG IN,8.7 PPG OUT SPR @ 04:00:DEPTH 13,190'MD,6,796'TVD, MW 8.6 PPG MP#1:20 SPM:460 PSI;30 SPM:660 PSI MP#2:20 SPM:470 PSI;30 SPM:680 PSI 12:00 - 21:00 9.00 DRILL N DPRB 14,968.00 PROD1 DIRECTIONALLY DRILL FROM 13,442'TO 13,929'MD.CORRECTING EVERY OTHER SURVEY TO ACCOUNT FOR AZIMUTH. -PUW 180K,SOW 100K,ROT 140K -258 GPM,1,820 PSI ON,1,720 PSI OFF -140 RPM,TQ 17K ON,14K OFF -8KWOB -MUD WT 8.6 PPG IN,8.7 PPG OUT SPR @ 15:30:DEPTH 13,659'MD,6,780'TVD, MW 8.6 PPG MP#1:20 SPM:580 PSI;30 SPM:780 PSI MP#2:20 SPM:590 PSI;30 SPM:780 PSI 21:00 - 22:00 1.00 DRILL N DPRB 14 968.00 PROD1 TROUBLESHOOT TOP DRIVE BLOWER MOTOR 22:00 - 22:30 0.50 DRILL N RREP 13,929.00 PROD1 TROUBLESHOOT TOP DRIVE BLOWER MOTOR 22:30 - 00:00 1.50 DRILL N DPRB 14,968.00 PROD1 DIRECTIONALLY DRILL FROM 13,929'TO 14,000'MD.CORRECTING EVERY OTHER SURVEY TO ACCOUNT FOR AZIMUTH. -PUW 180K,SOW 100K,ROT 137K -259 GPM,1,950 PSI ON,1,900 PSI OFF -140 RPM,TQ 17K ON,14K OFF -8K WOB -MUD WT 8.8 PPG IN,8.8 PPG OUT 12/14/2011 00:00 - 12:00 12.00 DRILL N DPRB 14,968.00 PROD1 DIRECTIONALLY DRILL FROM 14,000'TO 14,560'MD.CORRECTING EVERY OTHER SURVEY TO ACCOUNT FOR AZIMUTH. -PUW 184K,SOW 100K,ROT 138K -250 GPM,1,940 PSI ON,1,890 PSI OFF -120 RPM,TQ 14K ON,11K OFF -7K WOB -MUD WT 8.7 PPG IN,8.8 PPG OUT SPR @ 03:45: DEPTH 14,161'MD,6,787'TVD, MW 8.6 PPG MP#1:20 SPM:560 PSI;30 SPM:730 PSI MP#2:20 SPM:570 PSI;30 SPM:750 PSI ADT 4.55 Printed 1/16/2012 4:09:34PM • North America -ALASKA- BP Page 55 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(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 DRILL N DPRB 14,968.00 PROD1 DIRECTIONALLY DRILL FROM 14,560'TO 15,330'MD.CORRECTING EVERY OTHER SURVEY TO ACCOUNT FOR AZIMUTH. -PUW 218K,SOW 85K, ROT 135K -250 GPM,2,110 PSI ON,2,030 PSI OFF -140 RPM,TQ 19K ON,18K OFF -10K WOB -MUD WT 8.7 PPG IN,8.8 PPG OUT -CROSSED FAULT#4(PLANNED)AT 14,797' MD. --LOST 15 BBLS INITIALLY --DYNAMIC LOSS RATE AT—10 BBUHR --TREATING WITH 1.5 LB/BBL LCM ADDITION TO ACTIVE SYSTEM SPR @ 13:20: DEPTH 14,680'MD,6,728'TVD, MW 8.6 PPG MP#1:20 SPM:590 PSI;30 SPM:800 PSI MP#2:20 SPM:620 PSI;30 SPM:790 PSI SPR @ 19:30:DEPTH 15,180'MD,6,829'TVD, MW 8.8 PPG MP#2:20 SPM:710 PSI;30 SPM:910 PSI SPR @ 21:45:DEPTH 15,330'MD,6,829'TVD, MW 8.8 PPG MP#1:20 SPM:770 PSI;30 SPM:970 PSI MP#2:20 SPM:710 PSI;30 SPM:960 PSI ADT 4.93 22:00 - 23:00 1.00 DRILL ° P PROD1 BACKREAM OUT OF HOLE FROM 15,330'TO 15,150'MD -RACK BACK ONE STAND EVERY 20 MIN UNTIL BOTTOMS-UP -256 GPM,1,970 PSI -140 RPM,TQ 17K 22:00 - 00:00 2.00 DRILL N RREP 14,968.00 PROD1 BACKREAM OUT OF HOLE FROM 15,150'TO 14,968'MD -RACK BACK ONE STAND EVERY 20 MIN UNTIL BOTTOMS-UP -256 GPM,1,970 PSI -140 RPM,TQ 17K ADT FOR LAST 24 HRS:9.48 12/15/2011 00:00 - 00:30 0.50 DRILL N RREP 14,968.00 PROD1 BACKREAM OUT OF HOLE FROM 14,968'TO 14,871'MD -RACK BACK ONE STAND EVERY 20 MIN UNTIL BOTTOMS-UP -256 GPM,1,970 PSI -140 RPM,TQ 17K ATTEMPT TO PULL ON ELEVATORS WITH NO SUCCESS ATTEMPT TO RUN IN ON ELEVATORS WITH NO SUCCESS TOP DRIVE UP. WASH AND REAM DOWN FROM 14,871'TO 15,057'MD -200 GPM,1,450 PSI -60 RPM,TQ 10K Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 56 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 00:30 - 04:00 3.50 DRILL N RREP 14,968.00 PROD1 BACKREAM OUT OF HOLE FROM 15,057'TO 14,037'MD -255 GPM,2,000 PSI -100 RPM,TQ 15-19K -8.8 PPG MUD WT IN,8.8 PPG MUD WT OUT --CONDITION MUD ON TRIP INCREASE TO 140 RPM DUE TO TOP DRIVE STALLING OUT -MAX TQ 20K -140 RPM,TQ 16K 04:00 - 05:00 1.00 DRILL N RREP 14,968.00 PROD1 CIRCULATE BOTTOMS-UP -250 GPM,1,950 PSI -140 RPM,TQ 16K -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT 05:00 - 09:00 4.00 DRILL N RREP 15,330.00 PROD1 REPLACE TOP DRIVE BLOWER MOTOR CIRCULATE THROUGH DRILLSTRING WHILE PERFORMING REPAIR -200 GPM,1,350 PSI -DROP RATE TO 60 GPM,540 PSI AFTER BOTTOMS-UP -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT HELD D1 KICK WHILE TRIPPING DRILL 09:00 - 10:00 1.00 DRILL N RREP 15,330.00 PROD1 RIH FROM 14,037'TO 15,243'MD WASH AND REAM DOWN FROM 15,243'TO 15,330'MD -250 GPM,1,900 PSI -60 RPM,TQ 10K --TOP DRIVE HOSE LEAKING 10:00 - 12:30 2.50 DRILL N RREP 15,330.00 PROD1 HOLD PJSM CHANGE OUT 0-RING AT STANDPIPE/TOP DRIVE HOSE CONNECTION -INSTALL FLOOR VALVE 1 JOINT BELOW ROTARY TABLE -RIG UP HEAD PIN TO CIRCULATE THROUGH CEMENT HOSE WHILE REPAIRING TOP DRIVE -180 GPM,1,200 PSI -PUW 190K,SOW 105K 12:30 - 13:30 1.00 DRILL P PROD1 SERVICE RIG 13:30 - 00:00 10.50 DRILL P PROD1 DIRECTIONALLY DRILL FROM 15,330'TO 16,173'MD -DRILLED PAST PREVIOUS PRODUCTION HOLE TD(15,335')AT 13:30 -PUW 198K,SOW 90K, ROT 140K -250 GPM,2,150 PSI ON,2,080 PSI OFF -130 RPM,TQ 16K ON,13K OFF -10KWOB -MUD WT 8.7 PPG IN,8.8 PPG OUT ADT:4.88 SPR @ 20:00:DEPTH 15,892'MD,6,801'TVD, MW 8.7 PPG MP#1:20 SPM:670 PSI;30 SPM:850 PSI MP#2:20 SPM:670 PSI;30 SPM:890 PSI FUNCTION TEST BOP AT 23:00 ADT FOR LAST 24 HRS:4.88 Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 57 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/16/2011 00:00 - 04:00 4.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 16,173' TO 16,454'MD -PUW 200K,SOW 91K,ROT 139K, -250 GPM,2,240 PSI ON,2,190 PSI OFF -140 RPM,TQ 16K ON,10K OFF -5-10K WOB -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT SPR @ 02:45:DEPTH 16,356'MD,6,808'TVD, MW 8.7 PPG MP#1:20 SPM:750 PSI;30 SPM:970 PSI MP#2:20 SPM:740 PSI;30 SPM:980 PSI 04:00 - 06:00 2.00 DRILL P PROD1 CIRCULATE AND CONDITION HOLE -250GPM,2,300 PSI -140 RPM,TQ 15K -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT 06:00 - 12:00 6.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 16,454' TO 17,012'MD -PUW 210K,SOW 85K, ROT 132K, -250 GPM,2,300 PSI ON,2,150 PSI OFF -140 RPM,TQ 15K ON,15K OFF -9K WOB -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT LOSS RATE INCREASED AT 16,975'MD -FLOW OUT DROPPED 2-3% SPR @ 10:38:DEPTH 16,830'MD,6,822'TVD, MW 8.8 PPG MP#1:20 SPM:830 PSI;30 SPM: 1,030 PSI MP#2:20 SPM:790 PSI;30 SPM: 1,000 PSI 12:00 - 13:00 1.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD FROM 17,012' TO 17,106'MD -PUW 210K,SOW 90K, ROT 132K, -250 GPM,2,320 PSI ON,2,300 PSI OFF -140 RPM,TQ 16K ON,15K OFF -7K WOB -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT FAULT CROSSING CONFIRMED BY GEOLOGIST AT 16,970'MD DYNAMIC LOSS RATE AVERAGING 20-30 BBL/HR ADT:5.43 13:00 - 13:30 0.50 DRILL N DPRB 16,970.00 PROD1 DYNAMIC LOSSES CONSTANT AT 20-30 BBL/HR BACKREAM OUT OF HOLE FROM 17,106'TO 16,790 -250 GPM,2,100 PSI -140 RPM,TQ 20K 13:30 - 14:00 0.50 DRILL N DPRB 16,970.00 PROD1 CIRCULATE AND CONDITION HOLE FOR LCM PILL -ROTATE AND RECIPROCATE DRILLSTRING 60 FT -250 GPM,2,230 PSI -140 RPM,TQ 16K 14:00 - 15:00 1.00 DRILL N DPRB 16,970.00 PROD1 SPOT 30 BBL,40 LB/BBL CONVENTIONAL LCM PILL OUTSIDE DRILLSTRING AT 16,790'MD -250 GPM,2,230 PSI -140 RPM,TQ 16K Printed 1/16/2012 4:09:34PM North America -ALASKA-BP Page 58 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-01 OHL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 15:30 0.50 DRILL N DPRB 16,970.00 PROD1 ATTEMPT TO PULL ON ELEVATORS FROM 16,970'MD -40K OVERPULL OBSERVED -UNABLE TO PULL ON ELEVATORS 15:30 - 18:00 2.50 DRILL N DPRB 16,970.00 PROD1 TOP DRIVE UP AND BACKREAM FROM 16,970' TO 15,989'MD -250 GPM,2,100 PSI -140 RPM,TQ 15-22K -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT -DYNAMIC LOSSES AVERAGING 20-30 BBUHR 18:00 - 18:30 0.50 DRILL N DPRB 16,970.00 PROD1 RIH FROM 15,911'TO 16,920'MD -RIH ON ELEVATORS WITH NO PROBLEMS 18:30 - 19:00 0.50 DRILL N DPRB 16,970.00 PROD1 CIRCULATE DRILLPIPE VOLUME -250 GPM,1,850 PSI -140 RPM,TQ 15K 19:00 - 19:30 0.50 DRILL N DPRB 16,970.00 PROD1 POOH ON ELEVATORS FROM 16,920'TO 15,989'MD 19:30 - 20:00 0.50 DRILL N DPRB 16,970.00 PROD1 RIH FROM 15,989'TO 16,920'MD 20:00 - 21:00 1.00 DRILL N DPRB 16,970.00 PROD1 SPOT 27 BBL,40 LB/BBL CONVENTIONAL LCM PILL OUTSIDE DRILLSTRING AT 16,920'MD -200 GPM,1,370 PSI -140 RPM,TQ 16K -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT 21:00 - 21:30 0.50 DRILL N DPRB 16,970.00 PROD1 POOH ON ELEVATORS FROM 16,920'TO 15,989'MD 21:30 - 00:00 2.50 DRILL N DPRB 16,970.00 PROD1 CIRCULATE BOTTOMS-UP AND ALLOW ECD TO SQUEEZE LCM INTO LOSS ZONE -250 GPM,1,900 PSI -140 RPM,TQ 14K -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT -LARGE AMOUNT OF LCM MATERIAL OBSERVED OVER SHAKERS AT BOTTOMS-UP (360 BBLS) -SHAKERS LOADED AGAIN WITH LCM MATERIAL 480 BBLS INTO CIRCULATION -DYNAMIC LOSSES DOWN TO 18 BBUHR 12/17/2011 00:00 - 00:30 0.50 DRILL N DPRB 15,989.00 PROD1 FINISH CIRCULATING BOTTOMS-UP AND ALLOW ECD TO SQUEEZE LCM INTO LOSS ZONE -250 GPM,1,900 PSI -140 RPM,TQ 12K -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT -LARGE AMOUNT OF LCM MATERIAL OBSERVED OVER SHAKERS AT BOTTOMS-UP (360 BBLS) -SHAKERS LOADED AGAIN WITH LCM MATERIAL 480 BBLS INTO CIRCULATION -DYNAMIC LOSSES DOWN TO 18 BBUHR FLOW CHECK WELL FOR 10 MINUTES -NO FLOW CONSULT ANCHORAGE ODE AND WTL OF LCM PILL RESULTS WHILE PERFORMING FLOW CHECK Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 59 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C:(6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 00:30 - 02:00 1.50 DRILL N DPRB 17,106.00 PROD1 RIH FROM 15,911'TO 17,106'MD -RIH ON ELEVATORS WITH NO PROBLEMS -OBTAIN SLOW PUMP RATES -WASH DOWN LAST STAND AT 250 GPM 2,250 PSI SPR @ 01:20: DEPTH 17,051'MD,6,830'TVD, MW 8.8 PPG MP#1:20 SPM:790 PSI;30 SPM: 1,010 PSI MP#2:20 SPM:790 PSI;30 SPM: 1,020 PSI 02:00 - 02:30 0.50 DRILL P PROD1 DRILL FROM 17,106 TO 17,134'MD. -250 GPM,2,250 PSI -100 RPM,TQ 16K -5KWOB -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT -LARGE AMOUNT OF LCM SEEN AT BOTTOMS UP -DYNAMIC LOSSES DOWN TO 5 BBUHR -STRINGING IN 5 PPB LCM WHILE DRILLING AT THE BOTTOM OF THE STAND THE PRESSURE DROPPED TO 1,650 PSI.ARCHER TOOL STOPPED ORIENTING IN THE CORRECT DIRECTION STOP DRILLING TO INVESTIGATE PRESSURE DECREASE. 02:30 - 03:30 1.00 DRILL N SFAL 17,134.00 PROD1 INVESTIGATE PRESSURE DROP. FLOW RATE AND PRESSURE ERRATIC.ARCHER TOOL NOT ORIENTING AND IMPULSE NOT SENDING SIGNALS.CLEAN OUT SUCTION SCREENS ON MUD PUMP TWO.SOME LCM SEEN ON SCREEN.REDUCE AMOUNT OF LCM TO 3 PPB.PUMP AT 250 GPM AND PRESSURE STABILIZED AT 1,850 PSI. 03:30 - 10:00 6.50 DRILL P PROD1 DRILL FROM 17,134'TO 17,650'MD. PUW 220K,SOW 90K,ROT 136K -220 GPM,2,400 PSI ON,2,330 PSI OFF -140 RPM,TQ 18K ON,16K OFF -WOB 14K -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT -DYNAMIC LOSSES 5 BBUHR INITIAL -DYNAMIC LOSSES INCREASED TO 15 BBUHR BY 06:00 -STRINGING IN 3 PPB LCM(WITH REDUCED PROPORTION OF G-SEAL) -LARGE AMOUNTS OF LCM SEEN AT SHAKERS -TD CALLED BY RIG SITE GEOLOGIST AT 17,650'MD SPR @ 07:40: DEPTH 17,428'MD,6,861'TVD, MW 8.8 PPG MP#1:20 SPM:810 PSI;30 SPM: 1,040 PSI MP#2:20 SPM:820 PSI;30 SPM: 1,030 PSI ADT:3.86 10:00 - 11:30 1.50 DRILL P PROD1 CIRCULATE BOTTOMS-UP AND CONDITION HOLE -250 GPM,2,150 PSI -180 RPM,TQ 17K -8.8 PPG MUD WT IN,8.9 PPG MUD WT OUT Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 60 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) _ Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 12:00 0.50 DRILL P PROD1 OBTAIN SLOW PUMP RATES AT TD FLOW CHECK WELL FOR 10 MINUTES -NO FLOW SPR @ 11:35: DEPTH 17,650'MD,6,874'ND, MW 8.8 PPG MP#1:20 SPM:700 PSI;30 SPM:920 PSI MP#2:20 SPM:700 PSI;30 SPM:960 PSI 12:30 - 19:00 6.50 DRILL P PROD1 BACKREAM OUT OF HOLE FROM 17,650'TO 12,917'MD -250 GPM,2,050 PSI -140 RPM,TQ 15-20K -8.8 PPG MUD WT IN 9.0 PPG MUD WT OUT -DYNAMIC LOSSES 25-30 BBL/HR 19:00 - 20:30 1.50 DRILL P PROD1 MAD PASS BUILD SECTION FOR RESISTIVITY DATA FROM 12,917'TO 12,535'MD -250 GPM,1,900 PSI -8.7 PPG MUD WT IN,8.8 PPG MUD WT OUT PUMP OUT FROM 12,502'TO 12,443'MD -PULLED THROUGH WINDOW CLEAN 20:30 - 23:00 2.50 DRILL P "PROD1 CIRCULATE UNTIL SHAKERS CLEAN PLUS 1 BOTTOMS-UP -ROTATE AND RECIPROCATE DRILLSTRING -250 GPM,1,800 PSI -140 RPM,TQ 8.5K -8.8 PPG MUD WT IN AND OUT -DYNAMIC LOSSES 25-30 BBUHR FIRE DRILL CREW RESPONDED IN 90 SECONDS. HELD A TABLE TOP STRIPPING DRILL IN THE DOG HOUSE. 23:00 - 00:00 1.00 DRILL P PROD1 PJSM.SLIP AND CUT DRILLING LINE SERVICE TOP DRIVE,CROWN,AND BLOCKS MONITOR WELL USING TRIP TANKS AND CONTINUOUS HOLE-FILL -STATIC LOSSES AT 1.2 BBUHR 12/18/2011 00:00 - 01:00 1.00 DRILL P PROD1 FINISH SLIP AND CUT OPERATIONS -STATIC LOSSES AT 1.2 BBUHR 01:00 - 05:00 4.00 DRILL P PROD1 RIH ON ELEVATORS FROM 12,443'TO 17,650' MD -WASH DOWN LAST STAND —STAGE UP PUMPS --256 GPM,2,020 PSI 05:00 - 07:00 2.00 DRILL P PROD1 CIRCULATE 2X BOTTOMS-UP,CONDITIONING MUD AND HOLE FOR LINER RUN -ROTATE AND RECIPROCATE DRILLSTRING -250 GPM,2,200 PSI -160 RPM,TQ 12.5K -8.8 PPG MUD WT IN AND OUT HELD D2 KICK WHILE DRILLING DRILL Printed 1/16/2012 4:09:34PM North America -ALASKA- BP Page 61 of 62 Operation Summary Report Common Well Name:Z-116 I AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(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 DRILL P PROD1 OBTAIN SLOW PUMP RATES FLOW CHECK WELL FOR 10 MINUTES -NO FLOW PULL 15 STANDS ON ELEVATORS FROM 17,650'TO 16,175'MD -HOLE NOT TAKING PROPER DISPLACEMENT SPR @ 07:00: DEPTH 17,650'MD,6,874'TVD, MW 8.8 PPG MP#1:20 SPM:720 PSI;30 SPM:920 PSI MP#2:20 SPM:750 PSI;30 SPM:940 PSI 08:30 - 09:00 0.50 DRILL P PROD1 RIH FROM 16,175'TO 17,650'MD 09:00 - 10:00 1.00 DRILL P PROD1 CIRCULATE BOTTOMS-UP -250 GPM,2,330 PSI -160 RPM,TQ 15K -8.8 PPG MUD WT IN AND OUT 10:00 - 11:30 1.50 DRILL P PROD1 SPOT 100 BBL ALPINE BEAD LINER RUNNING PILL IN ANNULUS -250 GPM,2,100 PSI PARAMTERS BEFORE LINER RUNNING PILL -PUW 210K,SOW 100K,ROT 130K 160 RPM,TQ 15K PARAMETERS AFTER LINER RUNNING PILL -PUW 205K,SOW 105K, ROT 130K -160 RPM,TQ 11K 11:30 - 16:30 5.00 DRILL P PROD1 PUMP OUT OF HOLE FROM 17,650'TO 12,443' MD -PUMPING PIPE DISPLACEMENT -120 GPM,290 PSI -DROP 2.39"OD RABBIT WITH 90'TAIL AT 12,536'TO DRIFT DRILLPIPE FOR UPCOMING LINER RUN 16:30 - 17:30 1.00 DRILL P PROD1 BREAK CIRCULATION AT 12,443'MD -250 GPM,1,830 PSI -60 RPM,TQ 6K -8.8 PPG MUD WT IN AND OUT 17:30 - 18:30 1.00 DRILL P PROD1 LINE UP ON TRIP TANK POOH ON ELEVATORS FROM 12,443'TO 11,345'MD -MONITOR FIRST 10 STANDS FOR SWABBING 18:30 - 23:00 4.50 DRILL P PROD1 PUMP DRY JOB CONTINUE TO POOH ON ELEVATORS FROM 11,345'TO 327 MD HELD D1 KICK WHILE TRIPPING DRILL 23:00 - 23:30 0.50 DRILL P PROD1 FLOW CHECK WELL FOR 10 MINUTES PRIOR TO PULLING BHA THOUGH BOP STACK -WELL LOSING FLUID.STATIC LOSSES AT 2 BBUHR 23:30 - 00:00 0.50 DRILL P PROD1 LAY DOWN BHA#15 AS FOLLOWS: -4-3/4"SMITH HYDRA JARS -3-1/2"IF PIN X 4"XT-39 BOX CROSSOVER -4-3/4"BAKER PUMP-OUT-SUB CHANGE ELEVATORS FROM 4"TO 3-1/2" Printed 1/16/2012 4:09:34PM North America-ALASKA- BP Page 62 of 62 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 10/23/2011 End Date: 12/19/2011 X3-010HL-C: (6,644,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/19/2011 00:00 - 01:30 1.50 DRILL P PROD1 LAY DOWN BHA#15 AS FOLLOWS: -3 4-3/4"FLEX COLLARS LAY DOWN RADIOACTIVE SOURCE -ADN 475 -IMPULSE MWD -PERISCOPE -POWERDRIVE ARCHER ASSEMBLY BIT GRADE:2-1-BT-S-X-I-CT-TD END DON PHASE.MOVE TO CON REPORTS Printed 1/16/2012 4:09:32PM North America -ALASKA- BP Page 1 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-01OHL-C: (2,632,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/19/2011 01:30 - 02:30 1.00 CASING P RUNPRD MOB REMAINING BHA COMPONENTS OFF RIG FLOOR 02:30 - 05:00 2.50 CASING P RUNPRD MOBILIZE LINER RUNNING EQUIPMENT RIG UP TO RUN 4-1/2"LINER 05:00 - 15:30 10.50 CASING P RUNPRD RUN IN HOLE WITH 4.5"12.6"TC-II CASING -BAKER-LOK SHOETRACK -CHECK FLOATS AFTER MAKING UP SHOETRACK -USE JET LUBE SEAL GUARD THREAD DOPE ON TC-II CONNECTIONS -TORQUE TURN ALL CONNECTIONS TC=11 CONNECTIONS TORQUED TO 3,850 FT-LBS FILL LINER EVERY JOINT AND TOP OFF EVERY 10 JOINTS 15:30 - 16:00 0.50 CASING P RUNPRD RIG DOWN LINER RUNNING EQUIPMENT RIG UP TO RIH ON DRILLPIPE STANDS 16:00 - 16:30 0.50 CASING P RUNPRD MAKEUP HMCLINERHANGER/ZXP LINER TOP PACKER ASSEMBLY 16:30 - 17:00 0.50 CASING P RUNPRD CIRCULATE LINER VOLUME -210 GPM,510 PSI -8.8 PPG MUD WT IN AND OUT 17:00 - 21:30 4.50 CASING P RUNPRD RIH WITH 4-1/2"LINER ON DRILLPIPE FROM 5,326'TO 12,492'MD 21:30 - 23:00 1.50 CASING P RUNPRD CIRCULATE ANNULAR VOLUME PRIOR TO ENTERING OPENHOLE -BREAK CIRCULATION AT 3 BPM,610 PSI -STAGE UP PUMPS --4 BPM,770 PSI —5 BPM ,890 PSI FLOW CHECK THE WELL AND CONFIRM NO FLOW. 23:00 - 00:00 1.00 CASING P RUNPRD RUN IN HOLE ON 4"DRILL PIPE FROM 12,490' TO 13,700'MD FILLING THE PIPE EVERY 10 STANDS. 12/20/2011 00:00 - 03:30 3.50 CASING P RUNPRD CONTINUE TO RIH WITH 4-1/2"LINER ON DRILLPIPE STANDS FROM 13,700'TO 17,629' MD -WASH DOWN LAST STAND FROM 17,536'TO 17,629'MD --2 BPM,900 PSI -PUW 210K,SOW 105K _ 03:30 - 04:00 0.50 CASING P RUNPRD BLOW DOWN TOP DRIVE PICK UP TOP DRIVE CEMENT HEAD MAKE UP CEMENT HOSE TO TOP DRIVE CEMENT HEAD MAKE UP TOP DRIVE CEMENT HEAD TO SINGLE JOINT OF DRILLPIPE IN MOUSEHOLE MAKE UP CEMENT HEAD ASSEMBLY TO DRILLPIPE AND TAG BOTTOM AT 17,648'MD Printed 1/16/2012 4:09:57PM North America -ALASKA- BP Page 2 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-010HL-C: (2,632,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 - 08:30 4.50 CEMT P RUNPRD BREAK CIRCULATION AT 2.5 BPM,730 PSI CIRCULATE AND CONDITION HOLE. -RECIPROCATE PIPE 20'STROKES -PUW 190K,SOW 100K INITIAL -STAGE UP PUMPS --3.0 BPM,960 PSI —3.5 BPM,1,030 PSI —4.0 BPM,1,160 PSI --4.5 BPM,1,200 PSI --5.0 BPM,1,290 PSI Printed 1/16/2012 4:09:57PM North America-ALASKA-BP Page 3 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type:COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-010HL-C: (2,632,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Firs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 11:00 2.50 CEMT P RUNPRD CEMENT 4-1/2"PRODUCTION LINER IN PLACE WITH RECIPROCATION AS FOLLOWS: 06:44 BATCH MIX 11.5 PPG MUD PUSH II 07:30 HOLD PJSM 07:45 BATCH UP CEMENT 08:22 CEMENT TO WEIGHT 08:27 FINISH CIRCULATING WITH RIG.LINE UP TO SCHLUMBERGER CEMENTERS 08:28 PUMP 5 BBLS 11.5 PPG MUDPUSH II TO FLOOD LINES TO TD CEMENT HEAD 08:38 TEST CEMENT TRUCK KICKOUTS AT 900 PSI. INCREASE AND TEST LINES TO 4,700 PSI 08:50 PUMP 17 BBLS 11.5 PPG MUDPUSH II (22 BBLS TOTAL) -11.5 PPG MUDPUSH II -5.0 BPM,940 PSI TREATING PRESSURE 08:52 FINISH 10.0 PPG MUDPUSH II 08:58 PUMP 129.6 BBL 15.8 PPG CLASS G CMT @ 5 BPM -15.8 PPG CLASS G WITH GASBLOK,2 LB/BBL CEMNET LOSS CIRCULATION ADDITIVE -5.0 BPM,400 PSI TREATING PRESSURE 09:33 FINISHED WITH CEMENT 09:42 DROP DRILLPIPE DART. POSITIVE INDICATION DART LEFT TD CEMENT HEAD 09:44 DISPLACE CEMENT WITH RIG PUMPS -DISPLACE WITH 100 BBLS 9.2 PPG PERF PILL -PUMP 5.0 BPM,1,000 PSI 10:06 PACKING OFF 101 BBLS INTO DISPLACEMENT -UNABLE TO GET LINER BACK TO BOTTOM -LINER 14.5'OFF BOTTOM 10:19 DRILLPIPE DART LATCHED UP WITH LINER WIPER PLUG 10:24 DROP PUMP RATE TO 4 BPM,2,400 PSI PER SCHEDULE 10:26 STAGE PUMP RATE DOWN TO 2 BPM, 2,500 PSI FOR PLUG BUMP 10:38 BUMP PLUG @ 210 BBLS WITH 2,150 PSI -CADE PRESSURE 1,450 PSI --PRESSURES NOT WITHIN 15% -INCREASE PRESSURE TO 3,500 PSI AND SET HANGER -HOLD FOR 2 MINUTES 10:40 INCREASE PRESSURE TO 4,200 PSI AND RELEASE FROM LINER 10:41 BLEED OFF PRESSURE AND CHECK FLOATS -FLOATS HOLDING 10:46 PICK UP TO EXPOSE DOGS ON LINER RUNNING TOOL.WEIGHT SET LINER TOP PACKER WITH 25K DOWN WT ON LOAD INDICATOR 11:03 CONFIRM LINER TOP PACKER SET WITH ROTATION -30 RPM -PACKER CONFIRMED SET Printed 1/16/2012 4:09:57PM North America ALASKA- BP Page 4 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type:COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-010HL-C: (2,632,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) CEMENT IN PLACE AT 10:38 HRS 12 BBLS LOST DURING CEMENT JOB TAIL CEMENT REACHES 1,000 PSI COMPRESSIVE STRENGTH IN 11 HRS 59 MIN CEMENT PUMPED: -622 SX OF 15.8 PPG G-BLEND GASBLOK TAIL AT 1.17 CUFT/SX -EST.TOC=12.315'MD(TOP OF LINER) 11:00 - 12:00 1.00 CEMT P RUNPRD PULL LINER RUNNING TOOL OUT OF LINER TIEBACK RECEPTACLE CIRCULATE BOTTOMS-UP TO CLEAR EXCESS CEMENT FROM WELLBORE -430 GPM,2,170 PSI 12:00 - 12:30 0.50 CEMT P RUNPRD LAY DOWN TOP DRIVE CEMENT HEAD AND 2 SINGLES 12:30 - 13:00 0.50 CEMT P RUNPRD CIRCULATE BOTTOMS-UP AND CLEAN WELLBORE -360 GPM,1,360 PSI -NO ROTATION -WORK STRING 75',STAYING ABOVE LINER TIEBACK RECEPTACLE 13:00 - 13:30 0.50 CEMT P RUNPRD HOLD PJSM WITH RIG CREW AND CH2M HILL TRUCK PUSHER ON DISPLACING WELL TO BRINE 13:30 - 14:00 0.50 CEMT P RUNPRD EMPTY PITS 1-3 OF 8.8 PPG POWER VIS MUD 14:00 - 15:30 1.50 CEMT P RUNPRD PUMP 30 BBL, HIGH-VISCOSITY SWEEP DISPLACE WELL TO 8.8 PPG BRINE -255 GPM,1,020 PSI -FINAL BRINE WT IN AND OUT 8.8 PPG PICK UP SINGLE FROM PIPE SHED TO REBUILD STAND FLOW CHECK WELL FOR 10 MINUTES -WELL STATIC 15:30 - 20:00 4.50 CEMT P RUNPRD BLOW DOWN TOP DRIVE POOH FROM 12,315'TO 45'MD 20:00 - 20:30 0.50 CEMT P RUNPRD INSPECT LINER RUNNING TOOL -RELEASE TOOL SHEARED -DOG SUB SHEARED -SOLO PLUG BURST DISK INTACT MAKE SERVICE BREAK ON LINER RUNNING TOOL AND LAY DOWN IN TWO PIECES 20:30 - 21:30 1.00 BOPSUR P OTHCMP PULL WEAR RING MAKE UP STACK WASHER TO JOINT OF DRILLPIPE FLUSH STACK 21:30 - 23:00 1.50 BOPSUR P OTHCMP INSTALL TEST PLUG WITH 4-1/2"TEST JOINT MAKE UP 4"XT-39 FOSV AND DART VALVE FOR BOP TEST MAKE UP 3-1/2"IF FOSV FOR UPCOMING BOP TEST MOBILIZE 2-7/8"HT PAC FOSV,DART VALVE, AND CROSSOVER TO RIG FLOOR RIG UP TO TEST BOPE Printed 1/16/2012 4:09:57PM North America -ALASKA- BP Page 5 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type:COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-010HL-C: (2,632,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 00:00 1.00 BOPSUR P OTHCMP TEST BOPE PER BP/AOGCC REGULATIONS -USE 4-1/2",4",AND 2-7/8"TEST JOINTS -CHART ALL TESTS -TEST CHOKE VALVES,FOSV, DART VALVES, AND RAMS TO 250 PSI LOW,4,000 PSI HIGH FOR 5 MINUTES EACH TEST -TEST ANNULAR TO 250 PSI LOW,3,500 PSI HIGH FOR 5 MINUTES EACH TEST TEST AS FOLLOWS: -4-1/2"TEST JOINT --3-1/2"X 6"VBR UPPER RAMS CHOKE HCR --2-7/8"X 5"VBR LOWER RAMS 12/21/2011 00:00 - 06:00 6.00 BOPSUR P OTHCMP CONTINUE TESTING BOPE PER BP/AOGCC REGULATIONS -USE 4-1/2",4",AND 2-7/8"TEST JOINTS -CHART ALL TESTS -TEST CHOKE VALVES, FOSV, DART VALVES, AND RAMS TO 250 PSI LOW,4,000 PSI HIGH FOR 5 MINUTES EACH TEST -TEST ANNULAR TO 250 PSI LOW,3,500 PSI HIGH FOR 5 MINUTES EACH TEST TEST AS FOLLOWS: -4"TEST JOINT --3-1/2"X 6"VBR UPPER RAMS,CHOKE VALVES 1, 12, 13, 14, IBOP --CHOKE VALVES 9, 11, MANUAL IBOP --CHOKE VALVES 5,8, 10,XT-39 FOSV#1 --CHOKE VALVES 4,6,7,XT-39 FOSV#2 --CHOKE VALVE 2,XT-39 DART VALVE --MANUAL CHOKE,MANUAL KILL,3-1/2"IF FOSV --BOTTOM RAMS -ACCUMULATOR TEST --START PRESSURE:3,000 PSI --FUNCTION PRESSURE: 1,700 PSI --200 PSI RECOVERY TIME:40 SEC --SYSTEM RECOVERY TIME:3 MIN 8 SEC (188 SEC) --6 NITROGEN BACKUP BOTTLES:5 AT 2,100 PSI;1 AT 2,000 PSI -REMOVE 4"TEST JOINT AND CLOSE BLIND/SHEAR RAMS --BLIND/SHEAR RAMS,CHOKE VALVE 3,KILL LINE VALVE IN PITS -SUPERCHOKE -MANUAL CHOKE -OPEN BLIND/SHEAR RAMS AND INSTALL 2-7/8"TEST JOINT --ANNULAR;250 PSI LOW,3,500 PSI HIGH --2-7/8"X 5"VBR LOWER RAMS TEST WITNESSED BY DOYON TOURPUSHER HARRY GOCHENAUER,BP WSL BLAIR NEUFELD AND FRANK ROACH,AND AOGCC INSPECTOR CHUCK SCHEVE 06:00 - 07:30 1.50 BOPSUR P OTHCMP RIG DOWN BOPE TEST EQUIPMENT BLOW DOWN CHOKE MANIFOLD,CHOKE AND KILL LINES INSTALL WEAR BUSHING IN WELLHEAD 07:30 - 09:30 2.00 EVAL P OTHCMP SLIP AND CUT DRILLING LINE SERVICE TOP DRIVE, BLOCKS,AND CROWN Printed 1/16/2012 4:09:57PM North America -ALASKA- BP Page 6 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type:COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-010HL-C: (2,632,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:30 - 11:30 2.00 EVAL P OTHCMP MOBILIZE SCHLUMBERGER E-LINE TOOLS AND WELLTEC TRACTOR TO RIG FLOOR STRING UP E-LINE AND HANG SHEAVES ON TOP DRIVE AND ON RIG FLOOR 11:30 - 14:30 3.00 EVAL N SFAL OTHCMP TROUBLESHOOT E-LINE TOOLS -COMMUNICATION BREAK BETWEEN GR/CCL AND TRACTOR 14:30 - 18:30 4.00 EVAL P OTHCMP RIH WITH 5.95"OD GAUGE RING,JUNK BASKET,AND CCL ON TRACTOR FROM SURFACE TO 12,312'ELM AND TAG LINER TOP -DID NOT USE TRACTOR TO REACH TD 18:30 - 21:00 2.50 EVAL P OTHCMP POOH WITH E-LINE ASSEMBLY FROM 12,312' TO SURFACE 21:00 - 21:30 0.50 EVAL P OTHCMP LAY DOWN GAUGE RING AND JUNK BASKET -SMALL AMOUNT OF CEMENT AND METAL SHAVINGS RECOVERED BY JUNK BASKET LAY DOWN TRACTOR FOR QC CHECK BEFORE NEXT E-LINE RUN 21:30 - 23:30 2.00 EVAL P OTHCMP MOBILIZE TO RIG FLOOR AND RIG UP ISOLATION SCANNER TOOLS AND TRACTOR FOR NEXT BHA RUN PERFORM SHALLOW TEST ON E-LINE TOOLS 23:30 - 00:00 0.50- EVAL` P OTHCMP RIH WITH ISOLATION SCANNER 12/22/2011 00:00 - 04:00 4.00 EVAL - P OTHCMP CONTINUE TO RIH WITH ISOLATION SCANNER TO TOP OF LINER AT 12,312'MD 04:00 - 12:00 8.00 EVAL P OTHCMP LOG 7"CASING IN CEMENT EVALUATION MODE FROM 12,312'MD TO SURFACE 12:00 - 15:00 3.00 EVAL N SFAL OTHCMP REPROCESS LOGGING DATA AT SURFACE DUE TO INCORRECT PARAMETERS 15:00 - 16:00 1.00 EVAL P OTHCMP LAY DOWN E-LINE TOOLS AND TRACTOR MOTOR RIG DOWN E-LINE RUNNING TOOLS AND SURFACE EQUIPMENT 16:00 - 16:30 0.50 CASING P RUNPRD RIG UP TO PRESSURE TEST 4-1/2"LINER 16:30 - 17:30 1.00 CASING P RUNPRD PRESSURE TEST 4-1/2"LINER -250 PSI LOW FOR 5 MINUTES -INCREASE PRESSURE TO 4,000 PSI AND HOLE FOR 30 MINUTES --7.0 BBLS REQUIRED TO REACH TEST PRESSURE --LOST 30 PSI IN FIRST 15 MINUTES --LOST 5 PSI IN SECOND 15 MINUTES —6.5 BBLS RECOVERED WHEN PRESSURE WAS BLED OFF PRESSURE TEST DATA SENT TO WTL FOR AUTHORIZATION TO PROCEED 17:30 - 18:00 0.50 CASING P RUNPRD RIG DOWN PRESSURE TESTING EQUIPMENT BLOW DOWN CHOKE MANIFOLD,CHOKE AND KILL LINES 18:00 - 19:30 1.50 PERFOB P OTHCMP CHANGE OUT ELEVATORS TO 3-1/2"FOR PERF GUNS LOCATE 2-7/8"ELEVATORS FOR HT-PAC SPACEOUT PIPE MAKE UP SAFETY JOINT WITH 4"XT-39 FOSV IN TOP Printed 1/16/2012 4:09:57PM North America -ALASKA- BP Page 7 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type:COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-010HL-C:(2,632,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:30 - 21:00 1.50 PERFOB P OTHCMP HOLD PJSM WITH RIG CREW AND SCHLUMBERGER TCP TECHS RIG UP TO RUN TCP GUNS AUTHORIZATION TO PROCEED E-MAIL FROM WTL RECEIVED AT 19:42 21:00 - 00:00 3.00 PERFOB P OTHCMP RIH WITH SCHLUMBERGER 2-7/8"PERF GUNS -2-7/8"OD BODY -POWERJET 2906PJ SHOTS -6 SPF,60 DEG PHASING RUN AS FOLLOWS: -PERF GUNS FROM SURFACE TO 387' --INSTALL FIRING HEAD#1 -2-7/8"10.4#S-135 HT-PAC PIPE FROM 387' TO 1,115'MD -PERF GUNS FROM 1,115'TO 1,396'MD AT MIDNIGHT 12/23/2011 00:00 - 05:30 5.50 PERFOB P OTHCMP CONTINUE TO RIH WITH SCHLUMBERGER 2-7/8"PERF GUNS -2-7/8"OD BODY -POWERJET 2906PJ SHOTS -6 SPF,60 DEG PHASING RUN AS FOLLOWS: -PERF GUNS FROM 1,396'TO 2,313'MD --INSTALL FIRING HEAD#2 -2-7/8"10.4#S-135 HT-PAC PIPE FROM 2,313' TO 4,335'MD -PERF GUNS FROM 4,335'TO 4,764'MD —INSTALL FIRING HEAD#3 AND DISCONNECT SUB -2-7/8"10.4#S-135 HT-PAC PIPE FROM 4,764' TO 5,367'MD 05:30 - 11:30 6.00 PERFOB P OTHCMP RIH WITH PERF GUN ASSEMBLY ON 4" DRILLPIPE FROM 5,367'TO 12,543'MD -TAG AT 12,543'MD 11:30 - 13:00 1.50 PERFOB P OTHCMP PICK UP 3'TO 12540'MD AND MARK PIPE TAG PBTD AGAIN AT 12,543'MD PICK UP TO MARK AT 12,540'MD 13:00 - 14:00 1.00 PERFOB P OTHCMP HOLD PJSM WITH SCHLUMBERGER TCP CREW AND RIG CREW RIG UP TO FIRE PERF GUNS PERFORM FIRING SEQUENCE AND FIRE GUNS ON DEPTH -POSITIVE INDICATION ALL THREE INTERVALS FIRED SUCCESSFULLY -8 BBL LOSS NOTED PERFORATION INTERVAL DATA -2-7/8"2906PJ TCP GUNS,6 SPF,60 DEG PHASING,15 GRAM CHARGE WEIGHT -PERFORATED INTERVALS(FROM TOP TO BOTTOM): --12,830'TO 12,930' --12,980'TO 13,200' --15,250'TO 15,450' --15,600'TO 15,900' --16,050'TO 16,400' --17,180'TO 17,540' 14:00 - 17:30 3.50 PERFOB P OTHCMP POOH FROM 17,540'TO 12,779'MD -ABOVE TOP PERF Printed 1/16/2012 4:09:57PM North America -ALASKA- BP Page 8 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-01 OHL-C: (2,632,000.00) Project:Prudhoe Bay Site:PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:30 - 19:00 1.50 PERFOB P OTHCMP FLOW CHECK WELL -WELL STATIC CIRCULATE BOTTOMS-UP -250 GPM,920 PSI -8.8 PPG BRINE WT IN AND OUT -NO PERF DEBRIS OBSERVED ACROSS SHAKERS 19:00 - 19:30 0.50 PERFOB P OTHCMP FLOW CHECK WELL FOR 10 MINUTES -CALCULATED STATIC LOSS RATE:0.5 BBUHR BLOW DOWN CEMENT LINE RIG UP TO LAY DOWN 4"DRILLPIPE 19:30 - 20:00 0.50 PERFOB P OTHCMP POOH, LAYING DOWN DRILLPIPE FROM 12,779'TO 12,581'MD -INSPECT HARDBANDING ON DRILLPIPE -MARK AND SEGREGATE PIPE WITH EXCESSIVE HARDBANDING WEAR TO BE SENT FOR INSPECTION AND REPAIR 20:00 - 20:30 0.50 PERFOB P OTHCMP HOLD D1 KICK WHILE TRIPPING DRILL SERVICE TOP DRIVE AND PIPE SKATE 20:30 - 22:00 1.50 PERFOB P OTHCMP CONTINUE POOH,LAYING DOWN DRILLPIPE FROM 12,581'TO 10,949'MD -INSPECT HARDBANDING ON DRILLPIPE -MARK AND SEGREGATE PIPE WITH EXCESSIVE HARDBANDING WEAR TO BE SENT FOR INSPECTION AND REPAIR 22:00 - 23:00 1.00 PERFOB P OTHCMP FLOW CHECK WELL -STATIC LOSSES AT 0.5 BBUHR RIH WITH REMAINING STANDS ON DRILLER'S SIDE OF DERRICK FROM 10,949'TO 12,253' MD 23:00 - 00:00 1.00 PERFOB P OTHCMP FLOW CHECK WELL -STATIC LOSSES AT 0.5 BBUHR POOH,LAYING DOWN DRILLPIPE FROM 12,253'TO 11,238'MD -INSPECT HARDBANDING ON DRILLPIPE -MARK AND SEGREGATE PIPE WITH EXCESSIVE HARDBANDING WEAR TO BE SENT FOR INSPECTION AND REPAIR 12/24/2011 00:00 - 05:00 5.00 PERFOB P OTHCMP POOH, LAYING DOWN DRILLPIPE FROM 11,238'TO 5,366'MD -INSPECT HARDBANDING ON DRILLPIPE -MARK AND SEGREGATE PIPE WITH EXCESSIVE HARDBANDING WEAR TO BE SENT FOR INSPECTION AND REPAIR Printed 1/16/2012 4:09:57PM North America-ALASKA-BP Page 9 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type: COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-010HL-C: (2,632,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) _ Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 16:30 11.50 PERFOB P OTHCMP HOLD PJSM MEETING WITH RIG CREW, DOYON CASING,AND SCHLUMBERGER TCP TECHS LAY DOWN 2-7/8"HT PAC FROM 5,366'TO 4,764'MD LAY DOWN TCP GUNS FROM 4,764'TO 4,335' MD -ALL GUNS FIRED LAY DOWN 2-7/8"HT PAC FROM 4,335'TO 2,313'MD LAY DOWN TCP GUNS FROM 2,313'TO 1,115' MD -ALL GUNS FIRED LAY DOWN 2-7/8"HT PAC FROM 1,115'TO 387' MD LAY DOWN TCP GUNS FROM 387'TO SURFACE -ALL GUNS FIRED HOLD UNANNOUNCED D1 KICK WHILE TRIPPING DRILLS WITH BOTH CREWS 16:30 - 17:30 1.00 PERFOB P OTHCMP CLEAR RIG FLOOR OF ALL SCHLUMBERGER TCP TOOLS CLEAN RIG FLOOR 17:30 - 22:00 4.50 PERFOB P OTHCMP MAKE UP STACK WASHER TO END OF DRILLPIPE RIH WITH REMAINING DRILLPIPE IN DERRICK FROM SURFACE TO 9,341'MD 22:00 - 00:00 2.00 PERFOB P OTHCMP SLIP AND CUT DRILLING LINE SERVICE TOP DRIVE,CROWN,AND BLOCKS 12/25/2011 00:00 - 09:00 9.00 PERFOB P OTHCMP POOH, LAYING DOWN DRILLPIPE FROM 9,341' MD -INSPECT HARDBANDING ON DRILLPIPE -MARK AND SEGREGATE PIPE WITH EXCESSIVE HARDBANDING WEAR TO BE SENT FOR INSPECTION AND REPAIR --157 JOINTS 4"DRILLPIPE SENT TO API FOR INSPECTION AND REPAIR 09:00 - 10:00 1.00 WHSUR P RUNCMP CLEAR RIG FLOOR AND PULL WEAR BUSHING MAKE UP TUBING HANGER TO LANDING JOINT PERFORM DUMMY RUN WITH HANGER -MARK LANDING JOINT HELD TABLETOP D2 KICK WHILE DRILLING DRILL 10:00 - 13:30 3.50 RUNCOM P RUNCMP RIG UP TO RUN 4-1/2"COMPLETION Printed 1/16/2012 4:09:57PM North America -ALASKA- BP Page 10 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type:COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-01OHL-C: (2,632,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.:DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:30 - 00:00 10.50 RUNCOM P RUNCMP RUN 4-1/2"12.6#L-80 TC-II COMPLETION -TORQUE-TURN ALL CONNECTIONS TO 3,850 FT-LBS OPTIMUM -BAKERLOK TAILPIPE COMPONENTS(ALL BELOW PRODUCTION PACKER) -USE JET LUBE SEAL GUARD THREAD COMPOUND ON ALL CONNECTIONS ABOVE PACKER ASSEMBLY -RUN COMPLETION AS FOLLOWS(FROM BOTTOM TO TOP): —WLEG --PUP JOINT XN NIPPLE WITH RHC-M PLUG INSTALLED --PUP JOINT --1 JT 4-1/2"TUBING --PUP JOINT --X NIPPLE --2 PUP JOINTS HALLIBURTON 7"X 4-1/2"TNT PRODUCTION PACKER --2 PUP JOINTS --X NIPPLE --PUP JOINT --1 JT 4-1/2"TUBING --PUP JOINT --4-1/2"X 1"KBG-2GLM#1 --PUP JOINT --49 JTS 4-1/2"TUBING --PUP JOINT --4-1/2"X 1"KBG-2 GLM#2 --PUP JOINT --107 JTS 4-1/2"TUBING --PUP JOINT --4-1/2"X 1"KBG-2 GLM#3 --PUP JOINT --33 JTS 4-1/2"TUBING.MIDNIGHT DEPTH: 7,664'MD 12/26/2011 00:00 - 06:00 6.00 RUNCOM P RUNCMP CONTINUE TO RUN 4-1/2"12.6#L-80 TC-II COMPLETION TO 12,226'MD -TORQUE-TURN ALL CONNECTIONS TO 3,850 FT-LBS OPTIMUM -USE JET LUBE SEAL GUARD THREAD COMPOUND ON ALL CONNECTIONS ABOVE PACKER ASSEMBLY -RUN COMPLETION AS FOLLOWS(FROM BOTTOM TO TOP): --63 JTS 4-1/2"TUBING --PUP JOINT --X NIPPLE --PUP JOINT --46 JTS 4-1/2"TUBING PICK UP 3 MORE JOINTS AND NO-GO IN 4-1/2" LINER TIEBACK RECEPTACLE 06:00 - 07:30 1.50 RUNCOM P RUNCMP SPACE OUT COMPLETION -ADD TWO PUP JOINTS TOTALING 27.7' PICK UP ONE JOINT AND INSTALL ABOVE PUP JOINTS OBTAIN COMPLETION WEIGHTS -PUW 150K,SOW 105K MAKE UP HANGER AND LAND TUBING IN WELLHEAD Printed 1/16/2012 4:09:57PM North America -ALASKA- BP Page 11 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type:COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-01 OHL-C: (2,632,000.00) Project:Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual©87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:30 - 10:00 2.50 RUNCOM P RUNCMP REVERSE CIRCULATE COMPLETION FLUID -187 BBLS CLEAN 9.2 PPG BRINE -114 BBLS 9.2 PPG BRINE WITH -123 BBLS 9.2 PPG BRINE --4 BPM DROP BALL AND ROD -BALL AND ROD WITH ROLLER STEM 10:00 - 13:30 3.50 RUNCOM P RUNCMP RIG UP AND TEST TUBING THROUGH LANDING JOINT LANDING JOINT LEAKING AT RIG FLOOR BACK OUT AND LAY DOWN LANDING JOINT CLOSE BLIND/SHEAR RAMS AND TEST TUBING -250 PSI LOW FOR 5 MINUTES -4,000 PSI FOR 30 MINUTES -LOST 70 PSI IN FIRST 15 MINUTES -LOST 20 PSI IN SECOND 15 MINUTES BLEED DOWN TUBING PRESSURE TO 2,500 PSI 13:30 - 15:30 2.00 RUNCOM P RUNCMP LINE UP AND PRESSURE TEST 7"X 4-1/2" ANNULUS(PACKER) -250 PSI LOW FOR 5 MINUTES 4,000 PSI FOR 30 MINUTES -LOST 20 PSI IN FIRST 15 MINUTES -LOST 0 PSI IN SECOND 15 MINUTES RECEIVED AUTHORIZATION FROM WTL TO PROCEED WITH OPERATIONS PRESSURE UP TUBING TO 2,500 PSI AND ANNULUS TO 3,500 PSI RAPIDLY BLEED OFF TUBING PRESSURE AND SHEAR DCK VALVE PUMP 7 BBLS BOTH WAYS TO CONFIRM SHEAR VALVE OPEN -127 GPM,1,470 PSI 15:30 - 16:30 1.00 RUNCOM P RUNCMP BLEED OFF TUBING AND ANNULUS PRESSURES DRY ROD IN TWC TEST TWC FROM ABOVE -250 PSI LOW FOR 5 MINUTES -3,500 PSI HIGH FOR 5 MINUTES TEST TWC FROM BELOW -250 PSI FOR 5 MINUTES -3,500 PSI HIGH FOR 30 MINUTES 16:30 - 18:00 1.50 BOPSUR P RUNCMP RIG DOWN TEST EQUIPMENT BLOW DOWN ALL LINES TO BOP STACK DRAIN BOP STACK FOR RAM INSPECTION 18:00 - 23:30 5.50 BOPSUR P RUNCMP INSPECT ALL RAM ELEMENTS IN BOP STACK REPLACE 2-7/8"X 5"LOWER VBR ELEMENTS REPLACE 3-1/2"X 6'UPPER VBR ELEMENTS 23:30 - 00:00 0.50 BOPSUR P RUNCMP RIG UP TO NIPPLE DOWN BOP STACK 12/27/2011 00:00 - 01:30 1.50 BOPSUR P RUNCMP NIPPLE DOWN BOP STACK AND SET BACK ON STUMP 01:30 - 04:00 2.50 WHSUR P RUNCMP NIPPLE UP TUBING HEAD ADAPTER FLANGE AND DRY HOLE TREE 04:00 - 05:00 1.00 WHSUR P RUNCMP FMC TECH TEST TUBING HEAD ADAPTER FLANGE VOID -250 PSI LOW FOR 5 MINUTES -5,000 PSI HIGH FOR 10 MINUTES Printed 1/16/2012 4:09:57PM North America-ALASKA BP Page 12 of 12 Operation Summary Report Common Well Name:Z-116 AFE No Event Type:COM-ONSHORE(CON) Start Date: 12/19/2011 End Date: X3-010HL-C: (2,632,000.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: DOYON 14 Spud Date/Time: 10/24/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:Z-116 Actual @87.30ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) _ (ft) 05:00 - 06:00 1.00 WHSUR P RUNCMP FILL TREE WITH DIESEL FUNCTION VALVES TO FIL VOID SPACES WITH DIESEL PRESSURE TEST TREE -250 PSI LOW FOR 5 MINUTES -5,000 PSI HIGH FOR 10 MINUTES 06:00 - 08:00 2.00 WHSUR P RUNCMP RIG UP DSM LUBRICATOR AND TEST -TEST 250 PSI LOW,3500 PSI HIGH 5 MIN EACH -PULL TWC,R/D LUBRICATOR 08:00 - 12:30 4.50 WHSUR P RUNCMP RIG UP LITTLE RED AND TEST LINES TO 4200 PSI -FREEZE PROTECT 4.5'X 7"ANNULUS TO 2000'TVD -PUMP 77 BBLS OF 90 DEGREE DIESEL @ 3 BPM,1900 PSI 12:30 - 14:00 1.50 WHSUR P RUNCMP U-TUBE DIESEL -ANNULUS PRESSURE 400 PSI -TUBING PRESSURE 300PSI -FINAL PRESSURE ON ANNULUS AND TUBING 300 PSI -BLEED OFF PRESSURE TO 0 PSI 14:00 - 16:00 2.00 WHSUR P RUNCMP RIG DOWN CIRCULATING LINES IN CELLAR -RIG UP DSM LUBRICATOR AND TEST -250 PSI LOW,3500 PSI HIGH 5 MIN EACH 16:00 - 17:30 1.50 WHSUR P RUNCMP INSTALL BPV -TEST BPV FROM BELOW -250 PSI LOW,3500 PSI HIGH 5 MIN EACH -TOOK 3.7 BBLS OF DIESEL TO PRESSURE UP -BLEED PRESSURE TO 0,RIG DOWN LITTLE RED 17:30 - 20:00 2.50 WHSUR P RUNCMP RIG DOWN DOUBLE ANNULUS VALVE -INSTALL BLIND FLANGE,NEEDLE VAVE,AND GAUGE -TEST 250 PSI LOW,2500 PSI HIGH 5 MIN EACH 20:00 - 21:00 1.00 WHSUR P RUNCMP PUT AWAY TOOLS,CLEAN UP CELLAR, SECURE TREE -ALL VALVES CLOSED ON TREE,VERIFIED BY WSL WILL TURNER,AND DRILLER JEREMY ESMAILKA -RIG RELEASED FROM WELL Z-1161 @ 21:00 HRS 12/27/2011 Printed 1/16/2012 4:09:57PM m e OO W W W 00Q00 ,Q.Q N .mAMO Y mN W m 1°t`1°')N N AM.., O Y 4-4-W N 4- • SSE {Np WN W{p{M�O°,�Opp�Opp �.{Opp�1.{WMO, {X �'XN 8 �prprNNN ORM?: OR .�y QW miZ W PR Nr W 7r Nr O l 0)O l O l 01 O l 01 01 01 01 W O l O l°l°I W °l°1 O f.... o W OM1 0...vs 1°�°I o O l p l N W W W W W W W W W 0 w E J 66666 W W O)Oi O) 66666 66666 66666 66666 66666 66666 O)O) i i JJ0 O W o . 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OO00.4.4. 4(O1I i• E FOOO<NOONOO Oli C QNrQN0 7a00a0r O - QMYWQM 6OWm mm200 09028 OMN,-,- OtoO y 0 OM0N0mNOO COO OO ,r UJV mM0MNNCN¢• 2 Mt00LLL N -,7u- . u-U y I v T J Q M m CO- w w w o n O..-m r �N N V Q CO M O aiLi UM 1 r O lh m O NMM 6 60666 m 2m a asro0 22222 O;QrN NM aQQQQQroro ..... ton. to t c 0 7.. C o E ao oW g 1 tI c wE E O ❑U V- Page 1 of 4 Schwartz, Guy L (DOA) From: Warren, Abigail M [Abigail.Warren@bp.com] Sent: Thursday, December 15, 2011 4:56 PM To: Schwartz, Guy L (DOA) Cc: Allen, Kenneth W Subject: RE: Z-116 PTD#211-124 Attachments: Z-116i Ops summary.doc Guy, Attached is the update procedure. To clarify our other liner was a solid liner with swell packers and sliding sleeves. Let me know if you have any other questions Thanks Abby From: Schwartz, Guy L (DOA) [mailto:guy.schwartz@alaska.gov] Sent:Thursday, December 15, 2011 4:10 PM To: Warren, Abigail M Cc: Allen, Kenneth W Subject: RE: Z-116 PTD #211-124 Abby, Thanks for the updated cement calculations. Adding the cemented liner vs slotted/swell packers is acceptable. Can you forward me by email a updated procedure for the rest of the well? Liner running and the TCP portion.... Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Warren, Abigail M [mailto:Abigail.Warren@bp.com] Sent: Thursday, December 15, 2011 3:56 PM To: Schwartz, Guy L(DOA) Cc: Allen, Kenneth W Subject: RE: Z-116 PTD #211-124 Guy, I wanted to add a bit to this. Our LINER TD that I am using for this calculation is 17,650', and as always the cement will be brought 200' above the liner top. Please feel free to call. Have a great weekend Abby 12/16/2011 Page 2 of 4 From: Warren, Abigail M Sent: Thursday, December 15, 2011 3:52 PM To: Schwartz, Guy L (DOA) Cc: Allen, Kenneth W Subject: RE: Z-116 PTD #211-124 Guy, Below are my cement volumes for the 4.5" liner. We previously had planned to run the sliding sleeve and packer completion, but do to the trajectory of the wellpath we have decided to run a solid cemented completion. Please let me know if you have any questions. Thank you, Abby Casing Size 4 1/4" Basis: Lead: None Planned Lead TOC: NA Tail: Open hole volume with 40%excess+ 80' shoe track volume Tail TOC: Top of Liner Total Cement Volume: _ Lead None Planned Tail 129.5 bbl/725 ft3/619 sks of Class 'G' at 15.8 ppg and 1.17 cf/sk From: Schwartz, Guy L (DOA) [mailto:guy.schwartz@alaska.gov] Sent: Thursday, December 01, 2011 1:14 PM To: Warren, Abigail M Cc: Honas, Kristopher; Saltmarsh, Arthur C (DOA); Allen, Kenneth W Subject: RE: Z-116 PTD #211-124 Abby, Your explanation appreciated and as long as you stay in the C/B Kuparuk sand you will have ample hydrostatic mud weight. Good luck with the rest of the well. Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Warren, Abigail M [mailto:Abigail.Warren@bp.com] Sent: Thursday, December 01, 2011 11:21 AM To: Schwartz, Guy L(DOA) Cc: Honas, Kristopher; Saltmarsh, Arthur C(DOA); Allen, Kenneth W Subject: RE: Z-116 PTD #211-124 Guy, The original PTD which was submitted (before the revision) had the directional which dipped into the A5, so the 12/16/2011 Page 3 of 4 9.9 ppg MW would have been needed for pore pressure, originally. But, when the revision of the directional plan was done, the directional plan only dipped into the B shale so the 9.9 ppg MW was strictly for hole stability. We did drill into the B-shale during the last directional plan, but we do not plan on drilling into the shale this time. The expected max pore pressure for this wellplan will be an 8.2 ppg, we expect to stay in the C-sands. With a lowered mud weight of 8.6 ppg we will be-140 psi overbalanced to our 8.2 ppg Kuparuk reservoir, which we feel comfortable with. We do not expect that crossing these faults will be any issue in regards to finding higher mud weights. With the thickness of the B shale we do not see any chance of getting into the A sand after crossing either of the faults. We have already drilled the pilot hole and the plug back so we have a good idea of thicknesses and the throw of the first fault, so we see no chance of entering the B shale on the first fault crossing. On the second fault crossing there is a risk of entering the B shale but not the A sand so only hole stability is a concern, NOT well control. Please let me know if you need me to elaborate further. Thanks Abby From: Schwartz, Guy L(DOA) [mailto:guy.schwartz@alaska.gov] Sent: Thursday, December 01, 2011 10:15 AM To: Warren, Abigail M Cc: Honas, Kristopher; Saltmarsh, Arthur C (DOA) Subject: RE: Z-116 PTD #211-124 Abby, I looked at the Borehole profile you provide and your plan as outlined below is within the scope of the approved PTD. You will be redrilling the section again and need to stay within 500' from the permitted wellpath. The abandoned OH section is all within the Kuparuk zone so cement is not needed to isolate this from any other zones. Can you further elaborate on the mud weight change you are requesting? Your expected max mud weight for this zone was 9.6 ppg according to the PTD. Obviously you have already drilled into this zone for part of the planned wellpath and have a better idea of what the actual BHP is. Are you comfortable with dropping the weight that much? Are there any issues with finding higher pressures on faults you may cross while drilling further out from the motherbore? Regards, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Warren, Abigail M [mailto:Abigail.Warren@bp.com] Sent: Thursday, December 01, 2011 8:54 AM To: Schwartz, Guy L (DOA) Cc: Honas, Kristopher Subject: Z-116 PTD #211-124 Guy, I wanted to give you a heads up on operations moving forward on Z-116. Doyon 14 was drilling ahead in the production hole when we crossed the first fault in this section. Losses were 12/16/2011 Page 4 of 4 incurred and 4 LCM pills pumped plus a cement squeeze. The losses could not be healed. Our current plan forward is to set an open hole ECP plug -300' below the window and pump a cement balanced plug. We will bring cement back into the window and across the whipstock. The next BHA will be a cleanout BHA, once we run in with this BHA we will be swapping from oil based mud to water based mud. With the cleanout BHA we will clean off the whipstock and POOH. We will then RBIH with the drilling assembly and kick off using the same whipstock and redrill the build and lateral section. I should note that once swapped over to water based mud, the mud weight will be reduced down to -8.6 ppg. The original permit called for a mud weight of a 9.9 ppg. This was to control the B shale in the Kuparuk since the original wellplan dipped down into that formation. The current wellplan has high enough doglegs to avoid dipping into this shale, so this is the reason that we can reduce our mud weight. The thought is with the reduction of mud weight we should be able to control losses easier if they are encountered again. Please feel free to contact me with any questions Abby Warren Drilling Engineer BPXA W-564-5720 C-240-9293 12/16/2011 /p7-1) 2/1 - 1 2---`1 I 12-I5 (( Z-116i Drill and Complete Procedure Summary 1. MU and RIH w/7"Whipstock assembly. Hang 4.5" space-out tubing below whipstock and set whipstock such that window top is at the top of the Kuparuk C4. 2. Mill Window and drill 20' of new formation. Perform FIT test. POOH and LD milling assembly. 3. MU 6-%8" build section BHA. RIH and build to horizontal. Once sufficiently past Fault 4 POOH. 4. MU 6-W RSS drilling assembly with MWD/GR/RES/Azi-Den/Neu/Density Caliper Periscope package Drill ahead in Kuparuk C sands to TD. Circulate and condition mud. POOH on eleveators, C6:f lay down excess DP as necessary. 6. MU and RIH the 4-W solid liner. There will be 150' of overlapinto the 7" intermediate casing ,� and cement. TOC should be at the TOL. -- _ . . - - : - - .- - : . . - e. 8. Set liner hanger and liner top packer, displace the well to clean brine above the liner top, a perf pill will be left in the liner. 9. POOH, LD liner running tool RU E-line and run GR/JB, then USIT from PBTD to surface, RD E-line I+G� __.....1. 11. Before running the perf guns test the lower rams with a 2-7/8" test joint to 4000 psi. 1 RU DPC pert guns, RIH and perforate. Perf intervals will be supplied by the NWD team. 13. POOH LD excess DP 14. Run 4-W L-80 completion w/3 GLM and land tubing hanger. RILDS. 15. Drop RHC ball and rod on rollers and set packer as per Halliburton recommendation and test tubing to 4000 psi and annulus to 4000 psi. Shear the DCK-2 valve and pump both ways to confirm circulation ability. 16. Install and test TWC. Nipple down the BOPE. Nipple up and test double master valves to 5000 psi. RU DSM and pull TWC. 17. Freeze protect the well to -2,200 18. Install BPV in tubing hanger. Install all annulus valves and secure the well. Ensure that T/IA/OA are protected with two barriers. RDMO. STIRITIE ALASEn SEAN PARNELL,GOVERNOR ALASKA OIL AND GAS 333 W.7th AVENUE,SUITE 100 CONSERVATION COMMISSION ANCHORAGE,ALASKA 99501-3539 PHONE (907)279-1433 FAX (907)276-7542 Ken Allen Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 196612 Re: Prudhoe Bay Field, Borealis Pool, Z-116 BP Exploration (Alaska), Inc. Permit No: 211-124 (revised) Surface Location: 4564' FSL, 3511' FEL, SEC. 19, T11N, R12E, UM Bottomhole Location: 555' FSL, 1159' FEL, SEC. 06, T11N, R12E, UM Dear Mr. Allen: Enclosed is the approved application for permit to drill the above referenced service well. This permit supersedes and replaces the permit previously issued for this well dated September 21, 2011. 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 Z-116 PBI PH and API number 50-029-23455-70 from records, data and logs acquired for well Z-116. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, Daniel T. Seamount, Jr. Chair DATED this 2 day of December, 2011. cc: Department of Fish & Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o end. (via e-mail) STATE OF ALASKA � 4 .1 ALAS. OIL AND GAS CONSERVATION COMM. ONOW PERMIT TO DRILL !0?/-// 20 MC 25.005 Revised 11/17/11: Changed Targets 1 a.Type of work: 1b.Proposed Well Class: 0 Development Oil 0 Service-Winj 0 Single Zone 1 c. Specify if well is proposed for: ® Drill 0 Redrill 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone 0 Coalbed Gas 0 Gas Hydrates 0 Re-Entry 0 Exploratory ®Service-WAG 0 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 Z-116 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 18327' ND 6759' Prudhoe Bay Field/Borealis 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Pool Surface: ADL 028262&047450 4564'FSL, 3511'FEL, SEC. 19,T11 N, R12E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 2582'FSL, 1255'FWL. SEC.08,T11 N, R12E, UM In Progress Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 555'FSL, 1159'FEL, SEC.06,T11 N, R12E, UM 2560 14,000' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: 87.3' feet 15.Distance to Nearest Well Open Surface: x- 599162 y-5959360 Zone- ASP4 GL Elevation above MSL: 53.5' feet to Same Pool: 2680' 16.Deviated Wells: Kickoff Depth: 300' feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 99 degrees Downhole: 3381 Surface: 2703 18. Casing Program: 1 Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling_ Length MD ND MD ND (including stage data) 6-1/8" 4-1/2" 12.6# L-80 TCII 5350' 12350'_ 6655' 17700' 6820' Uncemented Sliding Sleeves 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): 12960' 7029' None 12960' 7029' None Casing Length Size Cement Volume MD TVD Conductor/Structural 80' 20" 260 sx Arcticset(Approx.) 80' 80' Surface 3321' 13-3/8" 2374 sx DeeDCrete.484 sx Class'G' 3309' 2399' Intermediate 3186' 9-5/8" 1356 sx Class'G' 3160'-6345' 2353'-3472' Production 12945' 7" 540 sx LiteCrete. 101 sx Class'G' ®E('�Et1 5►EDS 7020' Liner a �✓ Iry 237011 Perforation Depth MD(ft): None Perforation Depth TIRd$ka Oil & Gas Cons.Confusion Anchorage 20.Attachments: ® Property Plat IS BOP Sketch ®Drilling Program 0 Time vs Depth Plot 0 Shallow Hazard Analysis ® Diverter Sketch 0 Seabed Report IN Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Guy Schwartz Date: 11/17/11 22. I hereby certify that the foregoing is true and correct. Contact Ryan Ciolkosz,564-5977 Printed Name Ken Allen Title Engineering Team Leader Abby Warren,564-5720 1 ! Prepared By Name/Number: Signature /' 4:2 � C - Phone 564-4366 Date I I /'.aJi I Terrie Hubble,564-4628 y / ! Commission Use Oni Permit To Drill API Number: Permit A rovalate: See cover letter for Number: 211-124 50-029-23455-00-00 G1`1)\t1 other requirements Conditions of Approval: If box is checked,well may not be used to explore for,test,or produce coalbed`mefthane,gas hydrates,or gas contained shales: (r Other: '� y00d /as:, SOP C .\ Samples Req'd: es YJ No Mud Log Req'd: ❑�.es 01i° Z3 ,. ri"-"'�"'` 1--;1-1- C ` 1 H2S Measures: Yes 0 No Directional Survey Req'd: EYes 0 No / �� Date ),Z---;-----;;;-- APPROVED BY THE COMMISSION ,COMMISSIONER Form 10-4 Rev' ed 07/2009 This permit is valid for 2 m thf fGnitNI kapproval(20 AAC 25.005(g)) Submit In Duplicate Well Name: Z-116i PTD # 211 -124 Drill and Complete Plan Summary Name Position Office Home Cell Abby Warren/Ryan 5720/5977 688-2895 240-9293/244- Ciolkosz Drilling Engineer 4357 Stephen Crumley Geologist 4078 726-5640 441-1478 _ Bob Dawson Ops Geologist 5264 345-3359 242-2391 Mike Francis Pad Engineer 4240 644-0534 529-8678 Type of Well (service / producer/ injector): WAG Injector Horizontal Section Target 5968000 603780 6768 2581' FSL / 4025' FEL 11N, 12E, 8 Target 5968790 603190 6843 3379' FSL / 4601' FEL 11N, 12E, 8 Target 5969520 602630 6758 4117' FSL / 5149' FEL 11N, 12E, 8 Target 5969780 602425 6758 4380' FSL / 69' FEL 11N, 12E, 7 Target 5970807 601632 6823 138' FSL / 845' FEL 11N, 12E, 6 BHL 5971220 601310 6759 555' FSL / 1160' FEL 11N, 12E, 6 API NUMBER: 50-029234550000 Rig: Doyon 14 MD: 18327' TVD: 6659' RT/GL: 33.3/54.0 RTE: 87.3' Well Design: Grassroots Kuparuk Horizontal Injector 4 1/2" L-80 tubing with 4 1/2" solid liner with swell packer and sliding sleeve design Objective: Drill and complete new Kuparuk C sand horizontal injection well Directional Plan: Version: SLB P21 KOP: 12502' MD Maximum Hole Angle: 99° horizontal section Close Approach Wells: All wells pass major risk criteria. Reference anti-collision report Nearest well within Pool Z-116i is 2680' from closest well (Z-113) Distance to Nearest Property 14,000' to PBU boundary Line: Logging Program: Z-116i Permit Application Page 1 Intermediate Casing Cased Hole: Cement Bond Log Production Interval Drilling, MWD: GR, RES, NEU, Azimuthal Density Caliper Open Hole: None Cased Hole: None Mud Program: 6 1/8" Production Hole: Rheliant Mineral Oil Based Mud Interval Density (ppg) YP PV MLVolts HTHP Fluid Loss Csg Window to TD 9.9-10.1 10-20 <35 >350 < 5.0 Current Casing/Tubing Program: Hole Size Csg/Tbg O.D. Wt/Ft Grade Connection Length Top Btm MD/TVD MD/TVD RTE 42" 20" 129.5 X-65 WLD 80' GL 80'/80' 16" 13-3/8" 68 L-80 BTC 3321' GL 3309' /2399' 12-1/4" 9-5/8" 40 L-80 BTC 3186' 3160'/2353' 6345' /3472' 8-3/4" 7" 26 L-80 Vamtop HC 12945' GL 12945' / 7020' Proposed Casing/Tubing Program Hole Size Csg/Tbg O.D. Wt/Ft Grade Connection Length Top Btm MD/TVD MD/TVD RTE 6 ''/e" 4 '/2" 12.6 L-80 TOM 5350' 12350' /6655' 17700' /6820' Tubing 4 '/" 12.6 L-80 TCII 12350' GL 12350' /6655' Integrity Testing: Test Point Depth Test Type 7" Intermediate Casing 20'-50' from window LOT Formation Markers: Estimated Depth Hydrocarbon Estimated Pore Pressure Formation Formation Top Uncertainty Bearing Pore Pressure Uncertainty (TVDss) (+/-TVD ft) (Yes/No) (EMW ppg) (EMW+/-ppg) G1 -265 +/-30' 8.4 +0.05/-0.05 SV6 -1015 +/-30' 8.4 +0.05/-0.05 EOCU -1605 +/-30' 8.4 +0.05/-0.05 Fault 1 (Highland 1700 +/-100'M.D.-See State Fault) Fault Detail Section SV5(faulted out) SV4 -1710 +/-30' Potential Hydrate 8.4 +0.05/-0.05 BPRF -1845 +/-30' 8.4 +0.5/-0.05 SV3 -2170 +/-30' Hydrates 8.7 +0.2/-0.35 SV2 -2345 +/-30' Hydrates 8.7 +0.2/-0.35 SV1 -2735 +/-30' Hydrate/Free gas 8.7 +0.2/-0.35 UG4 -3135 +/-30' Hydrate/Free gas 8.7 +0.6/-0.35 UG4A -3200 +/-30' Hydrate/Free gas 8.7 +0.1 /-0.35 Fault 2 -3375 +/-100'M.D.-See Z-116i Permit Application Page 2 Fault Detail Section UG3(Faulted Top) -3375 +/-30' Possible hydrates/ 8.7 +0.1 /-0.35 Free gas UG1 -3865 +/-30' Possible heavy oil 8.7 +0.1 /-0.35 UG Ma -4225 +/-30' Heavy oil? 8.7 +0.1 /-0.35 UG_Mb1 -4275 +/-30' Wet? 8.7 +0.1 /-0.35 +/-100'M.D. -See Fault 3 -4320 Fault Detail Section UG_Mb2(faulted -4320 +/-30' Heavy oil? 8.7 +0.1 /-0.35 top) UG_Mc -4370 +/-30' Heavy oil? 8.7 +0.1 /-0.35 SB_Na -4455 +1-30' No 8.7 +0/-0.25 SB_Nb -4485 +1-30' Possible oil 8.7 +0/-0.25 SB_Nc -4520 +/-30' No 8.7 +0/-0.25 SB_OA -4645 +/-30' Possible oil 8.7 +0/-0.25 SB_OBa -4705 +/-30' Possible oil 8.7 +0/-0.25 SB_OBb -4745 +/-30' Possible oil 8.7 +0/-0.25 SB_OBc -4810 +/-30' Possible oil 8.7 +0/-0.25 SB_OBd -4865 +/-30' Possible oil 8.7 +0/-0.25 SB_OBe -4935 +/-30' Possible oil 8.7 +0/-0.25 SB_OBf -4980 +/-30' No 8.7 +0/-0.25 SB_OBf_Base -5035 +/-30' No 8.7 +0/-0.25 CM2 -5315 +/-30' No 8.7 +0/-0.25 CM1 -6040 +/-30' No 9.4 +0.8/0 TLBK -6305 +20'/-50' No 9.4 +1.3/0 THRZ -6490 +20'/-50' No 9.4 +0.9/0 TKLB -6680 +20'/-50' No 9.4 +0.9/0 TKC4 -6700 +20'/-50' Oil/water - 9.6 +0.8/-3.2 TKC1 -6715 +20'/-50' Water 9.6 +0.8/-3.2 TKB/LCU -6740 +20'/-50' Water 9.6 +0.8/-1.15 TKA6 6760 +20'/-50' Water 9.6 +0.8/-1.15 TKA5 6765 +20'/-50' Water 9.6 +0.8/-1.15 TMLV 6815 +20'/-50' Water 9.6 +0.7/0 +/- 100'M.D. -See Fault4 6700 Fault Detail Section +/- 100'M.D. -See Fault 5 -6700 Fault Detail Section Comments PPFG predictions are derived from the approved Z-Pad PPFG type curve. Estimated pore pressures in table are most likely pressures. Picks from TLBK to TMLV are isopached from the TKC4,which is derived from the deepest solution of a series of Time/Depth conversions,explaining the+20/-50'depth uncertainty. See tech package for more detailed explanation. Well Control: .% 16" hole will be drilled with diverter. The 12-1/4", 8 3/4" intermediate hole and 6 '/g" production hole sections will use well control equipment consisting of 5000 psi working pressure pipe rams(2), blind/shear rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Annular preventer will be tested to 35: OOasi. Rams will be tested to 9211_01.The BOP test frequency will be conducted on a 14 day frequency, with a function test every 7 days. Except for significant operational issues that may effect well integrity or pose safety concerns, an extension to the 14 day BOP test period should not be requested. Diverter, BOPE and drilling fluid system schematics of Doyon 14 are attached to this permit to drill. 7" Casing Test - 4,000 psi surface pressure Integrity Test-6-1/8" Hole FIT/ LOT after drilling 20'-50'' of new hole Kick Tolerance ! Infinite with a 10.4 ppg Planned Completion Fluids Corrosion Inhibited Brine/Diesel Z-116i Permit Application Page 3 Disposal: • No annular disposal in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS-04. • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS-04 for disposal. Haul all Class I wastes to Pad 3 for disposal. Area of Review There are no wells within 1/4 of a mile Z-116i Permit Application Page 4 Z-116i Drill and Complete Procedure Summary 1. MU and RIH w/ 7" Whipstock assembly. Hang 4.5" space-out tubing below whipstock and set whipstock such that window top is at the top of the Kuparuk C4. 2. Mill Window and drill 20' of new formation. Perform FIT test. POOH and LD milling assembly. 3. MU 6-Y8" build section BHA. RIH and build to horizontal. Once sufficiently past Fault 4 POOH. 4. MU 6-W RSS drilling assembly with MWD/GR/RES/Azi-Den/Neu/Density Caliper Periscope package 5. Drill ahead in Kuparuk C sands to TD. Circulate and condition mud. MAD-Pass / Backream as required and POOH lying in an OBM pill for the 4-1/2" liner run. Lay down excess DP as necessary. 6. MU and RIH the 4-I/2" solid liner with swell packers and sliding sleeves. There will be 150' of overly f into the 7" intermediate casing. IAA1 7. Set liner hanger and liner top packer as per BOT Rep and test LTP to 4000 psi for 30 minutes. l Release from liner and displace well to brine. POOH and LD Drill Pipe. 8. RU E-Line and run GR/JB, then USIT from PBTD to surface. 9. Run 4-W L-80 completion w/3 GLM and land tubing hanger. RILDS. 10. Drop RHC ball and rod on rollers and set packer as per Halliburton recommendation and test tubing to 4000 psi and annulus to 4000 psi. Shear the DCK-2 valve and pump both ways to confirm circulation ability. 11. Install and test TWC. Nipple down the BOPE. Nipple up and test double master valves to 5000 psi. RU DSM and pull TWC. 12. Freeze protect the well to 2200' TVD by first pumping corrosion inhibited brine down the IA with rig pumps followed by diesel down IA w/ Hot Oil truck, taking clean brine returns to surface. Allow diesel to u-tube into tubing. 13. Install BPV in tubing hanger. Install all annulus valves and secure the well. Ensure that T/IA/OA are protected with two barriers. RDMO. Post-Rig Work: 1. Pull BPV. R/U Slickline and pull ball and rod / RHC. 2. Replace the DCK shear valve with a dummy GLV. 3. Pull dummy valves and replace with gas lift valves. Pull VR Plugs. 4. Install wellhouses and flowlines. 5. Pump RG2401 (Blue-Goo) on top of surface casing cement. 6. Shift sliding sleeves 7. Flow back to test separator Z-116i Permit Application Page 5 Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE Well Control / Reservoir Pressures: A. The Schrader Bluff reservoir is most likely pressured at an 8.7 ppg EMW. The Lower Brookian (TLBK) had to be drilled with a 10.7 ppg due to over pressure on Z-08, but most likely pore pressure is 9.4 ppg EMW starting at the CM1. The Kuparuk sands may be pressured as high as C- 10.4 10.4 ppg EMW, but most likely pressured at a 9.6 ppg EMW. ,iL� 'A -A JP low 'c ��-_" IV. Faults &Ls-- "t TVDss Throw Formation Where Encounter Fault MD Intersect Intersect Est.Throw Direction Uncertainty Fault#1 -Highland State Fault SV4 2260+/-100' -1700 150ft+/-30' down to W +/-100'M.D Fault#2-Z-Pad N/S Fault into UG3 6160+/-100' -3375 160ft+1-30' down to W +/-100'M.D Fault#3-UB_Mb2 8750+/-100' -4320 30ft+/-10 down to E +/-100'M.D Fault#4-Horizontal section 13800+/-400' -6700 40ft+/-10' down to W +/-300'M.D Fault#5-Horizontal section 16350+/-250' -6700 40ft+/-10' down to W +/-250'M.D V. Lost Circulation / Breathing: A. Fault#1 - Highland state fault is crossing in the UG1. Losses are not considered to be encountered at the highland fault. Fault#2 is the Z-pad fault that is clearly seen in the seismic. Previous wells that have crossed this fault have not had major losses. Fault#3 is considered the largest risk of lost circulation due to potentially crossing it at its tip out point. It could be a fracture zone instead of a true crossing. Fault#4 and #5 are both in the horizontal section and have the most uncertainty around due to the shallow dip angle seen across them and the angle which the wellplan is crossing them. IX. Hydrogen Sulfide A. All Z Pad gas lift wells are expected to have H2S levels in the 20 to 120 ppm range; result of PBU gas lift gas. This site should be treated as an H2S site with all the required precautions. Well Name H2S Level Reading Date Parent Well(if sidetrack) #1 Closest SHL Well H2S Level Z-27 18 8/10/2010 #2 Closest SHL Well H2S Level Z-29 18 5/27/2009 #1 Closest BHL Well H2S Level Z-100 118 6/12/2010 #2 Closest BHL Well H2S Level V-122 16 7/6/2010 Max. Recorded H2S on Pad/Facility Z-100 120 2/7/2010 Other Relevant H2S Data (H2S alarms from rigs,etc.) CONSULT THE Z PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION Z-116i Permit Application Page 6 TREE= CMI WELLHEAD= FMC Z-116 i SAFE. JTES: ACTUATOR= AXELSON KB.ELEV= BF.ELEV= KOP= t ' I 2000' —I4.5"HES X Nipple, ID=3.813' Max Angle= Datum MD= Datum ND= 13-3/8"CSG,68#, L-80,BTC —1 3321' ID=12.415" GAS LIFT MANDRELS ST MD ND DEV TYPE VLV LATCH PORT DATE 9-5/8"LNR,40#, L-80,BTC ID=8.835"--{ 6346' r 3 2 a1 Minimum ID =3.813" @ 2,000' 4-1/2" HES X Nipple 4-1/2"L-80 EASYWELL SWELL PACKERS No# Type Top Depth Length DATE • 3 O • 2 0 • 1 0 4-1/2"L-80 HES SLIDING SLEEVES I0=3.813" 4.5"X Fipple,ID=3.813" J 12230' 7"x 4.5"HES TNT Packer.ID=3.856" — 12260' SIZE NO# Top Depth ID DATE 4.5"X Nipple, ID=3.813" — 12290' 4-1rz• 3 3.813 4.5"X Nipple,ID=3.813" —I 12320' 4114 i 4-1/2• 2 3.813 4-112- 1 3.813 4.5"TBG, 12.6#,L-80 ID=3.958" —{ —12,350' ` 7"x 5"Hanger/LTP, ID=4.29" —I —12,352' . •` 7"Top Whipstock --I -12,502 nn nn nnn❑ ❑❑ — r-=1 7"CSG,26#,L-80,Vam-HC. ID=6.151" H 12945' ❑ =�— DU u❑ ❑❑ ❑❑ 1'1'1'11'1'1111'1 4-1/2", LNR, 12.6#,L-80, ID=3.958" —I 17700' I� 1�1�1�1�1�1�1.1.1.1�1A4 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/27/11 CRR ORIGINAL COMPLETION WELL: Z-116 PERMIT No: 211-124 API No: 50-029234550000 BP Exploration(Alaska) N O e- (' Y C17C)nn W N0 0 0 0 C)0 00 nnnQ 0 0 0 0 N 00 0 0N O OWNN O 2'N V Oi Ci coo Q0O 0 N 6 m T, O W 6N u'i (V 6 NOf` ON Ci 00 N d nt (N N Q ON co o 0 0 00 CO 0 00 O N 0) CO to 001- CO N 000 n N N N N N N N 0 eCO CO CO CO CO n n n 0 0 N e,.N N N .-,-O 0 n 0 W V Q V V Q Cr Q Q V Q C)C)CO C)CO C)C)Cl CO C) C)te)0 C)CO C) W C)C)C)N N 2 0000000 (00 COOt0O<000 0000 m 0 000000 N (000000 00000 0 a N 0 CD TT g,--- 0 N N 0 N CO 0)0 0 N V,-e-W 0 e-N,-0) 0),0 0 0 n N 0 u) W 0 10 CO 0 0 001 0 0 n Cr e- 0 0 n O n 0 0 0 n N n 0 CO Q CO 0 CO 0 N e- 0 0 LO).-N 0 O .-C)C)0 e- 0r`Q 0 N 000 C)C) 0^N 0 N0 C)N 0 N CO t(0 N000 0 NO C)0 C3 V 00 NN O V C),-O 0,1--h-10 0,c0,-,-010,c0,-,-010 n C)C)C)C)C) V N m 0 0On 00 0 0•-NN 0)(0 0(00 n n 000 CO Q O 00000 00000 n n n n 00000 CO co CO 0 CO 0 03030 0 Z 00000 00000 010000 00000 00000 00000 0 TT 010000 00000 0,00)001 0000 001000 00000 0 TT N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N y » N N 000 0 0)r n 0 0 0 n 0 0 O N C)u) 0 00 0 0 0 0 0 0 04 0 0 0 0 0 ' ' T 0 0 0 0 0 0 0 0 0 0(0000 0 0 0 0 0 O O 100000 000tD0 000u)0 00u)00 0p00(0 Nnr`nr n ilk O V E 0 (q 00000 00000 00000 00000 00000 00000 0 J0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 p0 0 0 0 0 0 0 0 0 O p 0..-, 6 O N N N N N 0 '0 (0 V V COO V OOOQQ 444C0 V _ - N N N N N Cla LL- X X D:0 0 D1(n CC M(n J J J J J -4-1-4--I--I 100)10(0(0 (0(0(0(0_I J f'`.. 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O dm. $ „ q U O o �,L: ,,',� N N N A G m J e V m E 2 n N C) ',C O ?) 2 G= C C C? q C n p) p3 g o t « O >.T Q O V Y W >3 a 1- 0, Z 1-- m Z D1 O C'p V Y m 9 N 4.?(:J(/1 E C > o N U p 0 U Q,� 0 U p C S Y- - Z C C v u ul v E n m a a a m- m m `o a > > o g o o 0 o u KULLH3 ma 0,(p HU JJ UU' U h Fm0 W 0 N W)LU N W 0 0 O d pp� O n M 0 n m(� O n N N O C m O m 0 0 n N p m 0 W V MNNN NN-(0N 0100)00 N Q nm,-,o0 6,1,04M NNN 0 N N N N N N N•- 0000 000000 00000 a mmmm ))mmmm mmmm)) 0 (O OMn 0 ONn•'O N.mm 0 C., 0:7. 00,0 0000 M N M n 0 m n m 0 :226666 n6u i6O N N n m m Q n Q O O m O n N m N n n n m n m m m m N mmm00(0000 0000.- 2 0000. 0 1 0 0 0 n n 0 0) 0m 001(060 mmmm)) t0.1,)0.0 ▪ X n n m m m m N m m 0'm m 0 0=6,6 p riN n(- rrinrri rirrrn u O U 0 W... 0000 0000 00000 J 0000 0 0 0 0 0 00000 O 4464 44664 44440 I L▪a m w J m 0:y o J J J J J(0 -00M060000 Mm ,-mztocv W MW W h,QO= N0000000 IV P-0 0 0 N O CO CO .�mn m mM m NM *ovrmN n m Q m M n o o o 0 0 0 0 0 W m m m m m m m m n Q N 0 n m a m u) N N m m 0 0.- u)6 0 0 n 0(O M u) 0 n m N O 0000 rnu`�)mm O 666664 m m Q Q M M mO 0 0 O-.1103W0 <O M N MMM M M M m N N NNNNN a (0 Z u1W 0 O NOry NN m m Mpp N 28888888 4466 1-mbMQ O 4 W N ))0 0 0 0 0 0 '666666n:6 WN Np N-N 0 0 0 0 0 0 0 ..u)u) N m t N• m O 0))))O N (0 2�(�Bi 10 (0 Nrn IJ O Q a t44 V W O N(0 O nou1,M O to O r o N 6666 N N N O ry m M Q N M M (oNN nrnm0 00000 CI O O O O n a n 0 O Q N Q O m C M M M M M M N N M M n N Q 0 F n n)n M m 6 0 W 0O ((NN 000NN u) Nnnmm 00mmn 'O m CO m m 00,000 00000 ` a Nz 0000 oohmo 01,04.10�-� .� n n n n n 6 M M M M N n 88E 8$b00 0000 222 � 00tot-�0oomn ° ° wA3tO viN zDtJ D f (V fV(V N (V lh rvj rl c7 MNNNN .-W NN-+-,W E N N N N N N N N N N N N N N N N W N MMM M M M t 7 M M M MMM M 7.� m 2 z z x c G z Z z z (1),- w1-,00o0 0 F F 0 C(Q- 0 0 0 0 0 m l Pi h N 0 Q Q Q 0 0 O O W LL LL LL J- W = 000p00 O?t0!m qo 004666 00 mm LLN�))W W LL 06,.0000 CmDtpptpmw.OOi 0mmOmi Omn0 M0f0�mu)0 V Ju)Q Y9mQ� o LL J V)(p U)(0 J J n(0 LLLL LLLL(0(0 LL LLLL 0046))')))) u) Y N Ou)MVM u) N J QO N M Q Q u) 2 ,004 m(co 0M0( N-8, 00$0, u c c v ori 060666 ON- NO 000000N- (Wd)rnaTaK+£nm 6000 p p M 00 N m M 00(mm0 m M 7 s-m m m m m (O(0 l0 m m))n 0 nn nn (0 0 N N N N N O O (0 0) O N N U_ E o, Orn orn 0 E Z m E )0OQ10 O O 0 00 NOUN W(L O N W H 0 o 0 0 o o O co Y N U) 10 N- o.-- 12 0 0 0 o 0 co ' co o U Cm n W Cm e. e.▪` e N .1=1 i3 v E M 0 0 ze w co Ca 0 C/- ff z a d r ? $ a 'w N ~ W - o 2Sa ui E N _ Ina N N Z rs n o — — n 3 'c rn S SO 0 Ns: 0 N a p CO 0 4 43 0 fD U CO _ w1 W II CD M g orj cfoi y i i ci) m P 4. 6 at 3 3 O 3 e O ^� O cri N Z CD ' CD C) -0 8m 11 3 „F E 0. c e a > N U q Q :z3 v w 9 c e99 O U 0 ~ apo �_�pp E C U 8Fi N m E 3$ > o U C. O O pu O p O V m V —C) 0 'ic!.4 SF m N CL e3 U 8 W ry Z U ✓ =Q O O O W � rNi M $ < 33 .r 3 12 m 0 0 0 0 0 0 co O N O w r- (4)008:(0 I.=ahS aM. by 0 Schlumberger WELL FIELD STRUCTURE Z-116 (P21) Prudhoe Bay Unit -WOA Z-PAD Magnet.Parameters Sur.c.Location 146027 Na0Fa State...Zone 04.US Feet MecNlarcan Model 6GGM 2011 DO 80955• Date Nov..09 2011 Lat N 70 17 54 280 No.arg 5.3360 13 RUS Gro Cony D 7560670 Slot 2-116 6.2-111) NO Ref R%Mg T.Ne(87 SR above MSL) Meg Dae. 21078• FS'. 576493n7 Lon W 1491148978 Eaa.ry. 59916252800 Scale Fact.096991117 Plan Z•1161927) S.Det. No..m6.116.2011 1600 2400 3200 4000 4800 5600 12800 12800 N i 12000 • 12000 .1 6(P2 TD •C I6 • 7 4 11200 0 ••••• a 11200 °11. 115 Fault 5 A Z- 6 •'6 A 10400 •••• •• G t' 10400 Z End Cry Z- 6 5 '-116 F114 ._ C 4O0 \i/ flits,; Cry W C 11 a) 9600 •••• •••• 9600 m . U co End Cr. CO •116 Tgt 5 V Cry b100 V Fault4 8800 8800 Tgt 2 100 8000 4. 8000 72007200 169%DO Poly Cry 221100 • Tie-In Survey Rase Whipstock _ T4p Whipstock -116P81 current 1600 2400 3200 4000 4800 5600 (« W Scale= 1(in):800(ft) E »> 1 to N N t O —n C .s _c pO r U) O N U) 22,01--D Pg, _8 ,o — a g _N a A6 —N a AQ 0i2` lai —o os a �\0�5 b3, ab 0 30CO 51 S 86 O ,�1a �ac ,0 0 0 Quo,_Jp 2 \-- —co + 1 1 � N 1 L 3a et. CO o W N Qac ��{° M4,7) v;>, ob S et 0 en > y�rCO 1 I N 1111114N 9 s Qac Qom,.. �o 1.0L0.1 vq' `� 5' \ o sem! _ 131 113P�1 \ — 11 Y \ 4.�C C�� —N 0 >, ..... , Ili \ 40,. N44Y 2 0 .c a co co o ' OSS vNe-� c 2m�'- c) ea aaNNa 0° �� sb 0 " -� ` �_ 1 I 1 1 1 I I 1 1 r 1l 1 c �� �_ uoi �i g o o on o S CL m p N N ,_ .- O N h A (OA 00G) (+)4VoN/(-)43noS Phu Pram Z-1161L11d4116) 3 "s _1 - �o 00 9 os o0 CDCD' S CD II 95— Project: Prudhoe Bay Site: PBZ Pad Well: Z-116 90— Wellbore: Z-116 Design: Plan #21 Z-116 85— _ 5—_ 80- 75- - 70— 65— 60— :E 0—c 55— o 0 co a 50— a) a) U 45— 0 m aa)40- 35- 30— _ 0-35-30— 25- 20— _ 5-20— _ 15- 10- 5— 0 2��6/Z-11§P81 1 I I I I I I I I 1 I I I 12500 12525 12550 12575 12600 12625 12650 12675 12700 12725 12750 12775 12800 12825 12850 Measured Depth (50 ft/in) Oilfield Services, Alaska Schlumberger Drilling & Measurements Schlumberger 2525 Gambell, Suite 400 Anchorage, AK 99503 Tel (907)273-1766 Fax(907) 561-8367 Friday November 18, 2011 Abby Warren Borealis Z-116(P21) BP Exploration (Alaska) Inc. Doyon 14 Close Approach Analysis We have examined the potential intersections of the subject well with all other potentially conflicting wells, according to the BPA Directional Survey handbook (BPA-D-004)dated 09/99. Method of analysis: 1. A list of wells to be analyzed is created in Compass by performing a global scan with an initial search radius of two hundred feet with an increment of one hundred feet for every one thousand feet of measured depth in the subject well. 2. Wells are analyzed using the Compass Anti-collision module (BP Company setup) with major risk safety factors applied. For problem wells that are plugged and abandoned or that can be shut in, risk-based safety factor may be used, with client notification. 3. All depths are relative to the planned well profile. Survey Program: Tool Code Instrument Type Start Depth End Depth Inc+Trend Impulse 12502'md 12650'md MWD Impulse 12650'md 14150'md MWD+IFR+MS Impulse 12650'md 18327'md Survey Interval Production hole DLS > 5 deg/ 100 ft: 1 per joint-30 ft DLS < 5 deg/ 100 ft: 1 per stand -90 ft Close Approach Analysis results: Under method (2), note: All offset wells pass major risk. Z-116 passes major risk against Z-116PB1 motherbore by 12,575 ft MD. Magnetic scanning shows that there is potential interference coming out of the whipstock/window. Inc+Trend surveys will be used until full FAC MWD surveys can be taken. All data documenting these procedures is available for inspection at the Drilling & Measurements Drilling Engineering Center(DEC). Close Approach Drilling Aids to be provided: A Traveling Cylinder plot will be used for plan vs. actual plotting. Checked by: Nate Beck 11/18/2011 • BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 1116 Project: Prudhoe Bay TVD Reference: 1116 Actual @ 87.30ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Site Error: O.00ft North Reference: True Reference Well: 1116 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Z-116 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#21 Z-116 Offset TVD Reference: Offset Datum Reference Plan#21 Z-116 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer Interpolation Method: MD Interval 25.00ft Error Model: ISCWSA Depth Range: 12,465.90 to 18,327.19ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 2,029.34ft Error Surface: Elliptical Conic Survey Tool Program Date 11/16/2011 From To (ft) (ft) Survey(Wellbore) Tool Name Description 73.00 933.00 Z-116PB1 Srvy 1 GYD-GC-SS(Z-116PB1 GYD-GC-SS Gyrodata gyro single shots 965.43 3,236.41 Z-116PB1 Srvy 2 MWD+IFR+MS(Z-116P MWD+IFR+MS MWD+IFR+Multi Station 3,322.34 3,322.34 Z-116PB1 Srvy 3 INC+TREND(Z-116PB1 INC+TREND Inclinometer+known azi trend 3,421.43 6,265.52 Z-116PB1 Srvy 4 MWD+IFR+MS(Z-116P MWD+IFR+MS MWD+IFR+Multi Station 6,309.66 6,309.66 Z-116PB1 Srvy 5 INC+TREND(Z-116PB1 MWD+IFR+MS MWD+IFR+Multi Station 6,404.18 12,465.90 Z-116PB1 Srvy 6 MWD+IFR+MS(Z-116P MWD+IFR+MS MWD+ IFR+Multi Station 12,465.90 12,502.00 Plan#21 Z-116(Z-116) MWD+IFR+MS MWD+IFR+Multi Station 12,502.00 12,650.00 Plan#21 Z-116(Z-116) INC+TREND Inclinometer+known azi trend 12,650.00 14,150.00 Plan#21 Z-116(Z-116) MWD MWD-Standard 12,650.00 18,327.19 Plan#21 Z-116(Z-116) MWD+IFR+MS MWD+ IFR+Multi Station 11/16/2011 12:20.:25PM Page 2 of 8 COMPASS 2003.16 Build 73 BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Z-116 Project: Prudhoe Bay TVD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Z-116 Survey Calculation Method: Minimum Curvature Well Error: O.00ft Output errors are at 1.00 sigma Reference Wellbore Z-116 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#21 Z-116 Offset TVD Reference: Offset Datum 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 Z Pad Plan lvi Z-57(ND)v6-Plan Z-57-Plan#4 Z-57 vE Out of range Plan Ivi Z-61 (NF)v6-Plan Z-61-Plan#4 Z-61 vE Out of range Plan Kup Z-111 (29.5)v6-Plan Z-111-Plan#10 Out of range Plan Kup Z-114(27+45)v6-Plan Z-114-Plan#1 Out of range Plan Kup Z-115(NG)v6-Plan Z-115 w/PH-Plan 17,936.50 14,586.91 1,723.02 365.82 1,360.77 Pass-Major Risk Plan Kup Z-115(NG)v6-Plan Z-115PB1-Plan# Out of range Plan Sch Z-216(NI)v6-Plan Z-216-Plan#2 Z-2' Out of range Z-101-Z-101-Z-101 Out of range Z-103_DIMS-Z-103-2-103 Out of range Z-116-delete me Plan Z-116(2)do not use-delel Out of range Z-116-delete me Plan Z-116PB2 do not use-del Out of range Z-116-Z-116-Z-116 Out of range Z-116-Z-116PB1 -Z-116PB1 12,549.89 12,550.00 1.73 7.78 -2.75 FAIL-Major Risk Z-19-Z-19Z-19-Z-19-Z-19 Out of range Z-19-Z-19A-Z-19A Out of range Z-21-Z-21 -Z-21 Out of range Z-21-Z-21A-Z-21A Out of range Z-210_DIMS-Z-210-Z-210 Out of range Z-210_DIMS-Z-210PB1 -Z-210 PB1 Out of range Z-22--Z-22-Z-22 Out of range Z-22-Z-22A-Z-22A Out of range Z-22-Z-22B-Z-22B Out of range Z-23-Z-23A-Z-23A Out of range Z-23-Z-23B-Z-23B Out of range Z-27-Z-27-Z-27 Out of range Z-28-Z-28-Z-28 Out of range Z-29-Z-29-Z-29 Out of range Z-30-Z-30-Z-30 Out of range Z-30-Z-30A-Z-30A Out of range Z-30_DIMS-Z-30-Z-30 Out of range Z-30_DIMS-Z-30A-Z-30A Out of range Z-31 Z-31 -Z-31 Out of range Z-31_DIMS-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-326-Z-32B Out of range Z-32-Z-32BL1-Z-32BL1 Out of range Z-32-Z-32BP81-Z-32BPB1 Out of range Z-32-Z-32BPB2-Z-32BPB2 Out of range 11/16/2011 12.:20:25PM Page 3 of 8 COMPASS 2003.16 Build 73 BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Z-116 Project: Prudhoe Bay ND Reference: Z-116 Actual @ 87.30ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Z-116 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Z-116 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#21 Z-116 Offset ND Reference: Offset Datum Offset Design PB Z Pad- Plan Kup Z-115(NG)v6-Plan Z-115 w/PH-Plan#12 Z-115 v6 Offset Site Error: 0.008 Survey Program 34-GYD-GC-SS,1000-MWD+IFR+MS,3008-MWD+IFR:AK,5008-MWD+IFR+MS,10412-INC+TREND, Rule Assigned:Major Risk Offset Well Error: 0.00 ft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toolface+ Offset Wellbore Centre Casing- Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth +N/-S +E/-W Hole Size Centre Distance Deviation ON (ft) (ft) (n) In) (n) r) (ft) (R) Oft (ft) (n) (ft) 15,194.18 6,842.44 11,800.00 6,712.24 56.07 54.63 -124.42 8,091.07 2,590.65 0.55 2,026.32 312.34 1,715.76 Pass-Major Risk 15,21606 6,843.03 11,825.00 6,715.93 56.12 54.68 -124.41 8,114.93 2,584.17 0.55 2,016.50 312.83 1,705.56 Pass-Major Risk 15,238.06 6,843.29 11,850.00 6,719.19 56.16 54.73 -124.39 8,138.76 2,577.34 0.55 2,007.01 313.31 1.695.68 Pass-Major Risk 15,257.78 6,843.23 11,875.00 6,722.04 56.21 54.79 -124.31 8,162.54 2,570.18 0.55 1,997.87 313.94 1,686.00 Pass-Major Risk 15,276.75 6,842.93 11.900.00 6,724.46 56.25 54.84 -124.21 8,186.26 2.562.67 0.55 1,989.11 314.61 1,676.65 Pass-Major Risk 15,300.00 6,842.23 11,925.00 6,726.46 56.30 54.89 -124.05 8,209.91 2,554.82 0.55 1,980.74 315.43 1,667.57 Pass-Major Risk 15,315.03 6,841.58 11,950.00 6,728.03 56.33 54.94 -123.97 8,233.49 2,546.65 0.55 1,972.76 316.01 1,659.05 Pass-Major Risk 15,334.33 6,840.52 11,975.00 6,729.18 56.37 55.00 -123.85 8,256.97 2,538.14 0.55 1,965.17 316.71 1,650.84 Pass-Major Risk 15,353.73 6,839.20 12,000.00 6,729.90 56.42 55.05 -123.72 8,280.34 2,529.31 0.55 1,957.99 317.42 1,643.02 Pass-Major Risk 15,373.22 6,837.62 12.02500 6,730.19 56.46 55.10 -123.58 8,303.61 2,520.17 0.55 1,951.21 318.13 1,635.60 Pass-Major Risk 15,392.80 6,835.77 12,050.00 6,730.13 56.50 55.16 -123.44 8,326.73 2,510.66 0.55 1,944.88 318.86 1,628.63 Pass-Major Risk 15,413.43 6,833.55 12,075.00 6,729.83 56.55 55.21 -123.35 8,349.65 2,500.69 0.55 1,939.11 319.50 1,622.25 Pass-Major Risk 15,437.80 6,830.83 12,100.00 6,729.31 56.60 55.26 -123.40 8,372.37 2,490.27 0.55 1,933.84 319.85 1,616.61 Pass-Major Risk 15,462.28 6,828.09 12,125.00 6,728.57 56.66 55.32 -123.45 8,394,87 2,479.41 0.55 1,929.09 320.20 1,611.47 Pass-Major Risk 15,486.86 6,825.35 12,150.00 6,727.60 56.72 55.37 -123.50 8,417.15 2,468.10 0.55 1,924.83 320.55 1,606.83 Pass-Major Risk 15,511.54 6,822.59 12,175.00 6,726.40 56.77 55.42 -123.54 8,439.19 2,456.36 0.55 1,921,08 320.90 1,602.70 Pass-Major Risk 15,536.30 6,819.83 12,200.00 6,724.99 56.83 55.47 -123.58 8,460.97 2,444.18 0.55 1,917.83 321.26 1,599.07 Pass-Major Risk 15,561.13 6,817.06 12,225.00 6,723.35 56.89 55.53 -123.61 8,482.50 2,431.58 0.55 1,915.09 321.63 1,595.95 Pass-Major Risk 15,586.00 6,814.28 12,250.00 6,721.56 56.95 55.58 -123.63 8,503.86 2,418.70 0.55 1,912.69 322.00 1,593.16 Pass-Major Risk 15,610.87 6,811.51 12,275.00 6,719.77 57.01 55.63 -123.66 8,525.20 2,405.81 0.55 1,910.30 322.37 1,590.38 Pass-Major Risk 15,635.74 6,808.73 12,300.00 6,717.98 57.07 55.68 -123.69 8,546.55 2,392.92 0.55 1,907.91 322.74 1,587.60 Pass-Major Risk 15,660.61 6,805.96 12,325.00 6,716.19 57.13 55.73 -123.71 8,567.89 2,380.03 0.55 1,905.52 323.13 1,584.82 Pass-Major Risk 15,685.48 6,803.18 12,350.00 6,714,40 57.19 55.79 -123.74 8,589.24 2,367.14 0.55 1,903.13 323.51 1,582.03 Pass-Major Risk 15,710.35 6,800.40 12,375.00 6,712.61 57.25 55.84 -123.77 8,610.59 2,354.25 0.55 1,900.75 323.89 1,579.25 Pass-Major Risk 15,735.22 6,797.63 12.40000 6,710.82 57.31 55.89 -123.79 8,631.93 2,341.36 0.55 1,898.36 324.27 1,576.46 Pass-Major Risk 15,760.09 6,794.85 12,425.00 6,709.03 57.37 55.95 -123.82 8,653.28 2,328.47 0.55 1,895.97 324.66 1,573.66 Pass-Major Risk 15,784.96 6,792.08 12,450.00 6,707.24 57.43 56.00 -123.84 8,674.62 2,315.58 0.55 1,893.58 325.06 1,570.87 Pass-Major Risk 15,809.83 6,789.30 12,475.00 6,705.45 57.49 56.06 -123.87 8,695.97 2,302.69 0.55 1,891.20 325.45 1,568.07 Pass-Major Risk 15,834.70 6,786.52 12,500.00 6,703.66 57.55 56.11 -123.90 8,717.32 2,289.80 0.55 1,888.81 325.84 1,565.28 Pass-Major Risk 15,859.57 6,783.75 12,525.00 6,701.87 57.61 56.17 -123.93 8,738.66 2,276.91 0.44 1,886.42 326.15 1,562.56 Pass-Major Risk 15,884.44 6,780.97 12,550.00 6,700.08 57.68 56.22 -123.95 8,760.01 2,264.02 0.44 1,884.04 326.56 1,559.75 Pass-Major Risk 15,909.31 6,778.19 12,575.00 6,698.29 57.74 56.28 -123.98 8,781.35 2,251.13 0.44 1,881.65 326.96 1,556.96 Pass-Major Risk 15,934.18 6,775.42 12,600.00 6,696.50 57.80 56.33 -124.01 8,802.70 2,238.24 0.44 1,879.27 327.35 1,554.17 Pass-Major Risk 15,959.05 6,772.64 12.625.00 6,694.71 57.87 56.39 -124.03 8,824.05 2,225.35 0.44 1,876.88 327.74 1,551.37 Pass-Major Risk 15,983.92 6,769.87 12.650.00 6,692.98 57.93 56.44 -124.06 8,845.40 2,212.47 0.44 1,874.48 328.15 1,548.54 Pass-Major Risk 16,009.15 6,767.05 12,675.00 6,691.65 57.99 56.49 -124.12 8,866.81 2,199.64 0.44 1,872.00 328.50 1,545.67 Pass-Major Risk 16,038.15 6,764.16 12,700.00 6,690.75 58.06 56.55 -124.36 8,888.28 2,186.86 0.44 1,869.38 328.49 1,542.93 Pass-Major Risk 16,067.17 6,761.84 12,725.00 6,690.28 58.13 56.59 -124.60 8,909.80 2,174.14 0.44 1,866.62 328.44 1,540.07 Pass-Major Risk 16,096.20 6,760.10 12,750.00 6,690.23 58.20 56.64 -124.82 8,931.36 2,161.48 0.44 1,863.71 328.39 1,537.08 Pass-Major Risk 16,125.24 6,758.95 12,775.00 6,690.63 58.27 56.69 -125.04 8,952.94 2,148.87 0.44 1,860.68 328.33 1,533.99 Pass-Major Risk 16,154.28 6,758.37 12,800.00 6,691.45 58.33 56.74 -125.26 8,974.53 2,136.30 0.44 1,857.54 328.26 1,530.79 Pass-Major Risk 16,181.09 6,758.30 12,825.00 6,692.71 58.40 56.79 -125.38 8,996.13 2,123.77 0.44 1,854.29 328.42 1,527.31 Pass-Major Risk 16,205.83 6,758.30 12,850.00 6,694.20 58.46 56.84 -125.42 9,017.73 2,111.28 0.44 1,851.00 328.82 1,523.61 Pass-Major Risk 16,230.58 6,758.30 12,875.00 6,695.69 58.53 56.90 -125.47 9,039.33 2,098.78 0.44 1,847.71 329.24 1,519.89 Pass-Major Risk 16,255.32 6,758.30 12,900.00 6,697.18 58.59 56.95 -125.51 9,060.94 2,086.29 0.44 1,844.42 329.66 1,516.17 Pass-Major Risk 16,280.07 6.758.30 12,925.00 6,698.67 58.66 57.01 -125.55 9,082.54 2,073.79 0.44 1,841.14 330.09 1,512.44 Pass-Major Risk 16,304.81 6,758.30 12,950.00 6,700.16 58.73 57.07 -125.59 9,104,14 2,061.29 0.44 1,837.85 330.53 1,508.70 Pass-Major Risk 16,329.56 6,758.30 12,975.00 6,701.65 58.79 57.13 -125.64 9,125.74 2,048.80 0.44 1,834.57 330.98 1,504.95 Pass-Major Risk 11/16/2011 12:20:25PM Page 4 of 8 COMPASS 2003.16 Build 73 BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Z-116 Project: Prudhoe Bay TVD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Z-116 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Z-116 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#21 Z-116 Offset TVD Reference: Offset Datum Offset Design PB Z Pad- Plan Kup Z-115(NG)v6-Plan Z-115 w/PH-Plan#12 Z-115 v6 Offset Site Error- 0.00ft Survey Program 34-GYD-GC-ss,1000-MWD+IFR+MS,3008-MWD+IFR:AK,5008-MWD+IFR+MS,10412-INC+TREND, Rule Assigned:Major Risk Offset Well Error: 0.00ft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Tootface+ Offset Wellbore Centre Casing- Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth +NW-S +&-w Hole Size Centre Distance Deviation (ft) (ft) (ft) (G) (ft) (1) (') (ft) (R) (ft) (ft) (ft) (ft) 16,354.30 6,758.30 13,000.00 6,703.14 58.86 57.19 -125.68 9,147.34 2,036.30 0.44 1,831.29 331.43 1,501.21 Pass-Major Risk 16,379.05 6,758.30 13,025.00 6,704.63 58.93 57.26 -125.72 9,168.95 2,023.81 0.44 1,828.01 331.88 1,497.47 Pass-Major Risk 16,403.79 6,758.30 13,050.00 6,706.12 59.00 57.32 -125.77 9,190.55 2,011.31 0.44 1,824.73 332.32 1,493.73 Pass-Major Risk 16,428.54 6,758.30 13,075.00 6,707.60 59.07 57.38 -125.81 9,212.15 1,998.82 0.44 1,821.45 332.79 1,489.97 Pass-Major Risk 16,453.28 6,758.30 13,100.00 6,709.09 59.14 57.44 -125.86 9,233.75 1,986.32 0.44 1,818.17 333.25 1,486.21 Pass-Major Risk 16,478.03 6,758.30 13,125.00 6,710.58 59.21 57.51 -125.90 9,255.35 1,973.82 0.44 1,814.89 333.71 1,482.47 Pass-Major Risk 16,499.62 6,758.30 13,150.00 6,712.07 59.27 57.57 -125.95 9,276.95 1,961.33 0.44 1,811.62 334.12 1,478.77 Pass-Major Risk 16,521.49 6,758.46 13,175.00 6,713.56 59.32 57.63 -125.82 9,298.56 1,948.83 0.44 1,808.39 334.97 1,474.62 Pass-Major Risk 16,540.90 6,758.88 13,200.00 6,715.05 59.37 57.70 -125.70 9,320.16 1,936.34 0.44 1,805.23 335.74 1,470.64 Pass-Major Risk 16,560.34 6,759.56 13,225.00 6,716.54 59.42 57.76 -125.57 9,341.76 1,923.84 0.44 1,802.15 336.50 1,466.74 Pass-Major Risk 16,580.48 6,760.53 13,250.00 6,718.03 59.47 57.83 -125.45 9,363.36 1,911.35 0.44 1,799.15 337.23 1,462.96 Pass-Major Risk 16,605.30 6,761.85 13,275.00 6,719.52 59.54 57.89 -125.45 9,384.96 1,898.85 0.44 1,796.17 337.69 1,459.52 Pass-Major Risk 16,630.12 6,763.17 13,300.00 6,721.01 59.61 57.96 -125.45 9,406.57 1,886.36 0.44 1,793.19 338.15 1,456.08 Pass-Major Risk 16,654.94 6,764.49 13,325.00 6,722.50 59.68 58.02 -125.46 9,428.17 1,873.86 0.44 1,790.21 338.56 1,452.68 Pass-Major Risk 16,679.77 6,765.81 13,350.00 6,723.99 59.75 58.09 -125.46 9,449.77 1,861.36 0.44 1,787.23 339.05 1,449.21 Pass-Major Risk 16,704.59 6,767.13 13,375.00 6,725.48 59.82 58.15 -125.46 9,471.37 1,848.87 0.44 1,784.25 339.61 1,445.67 Pass-Major Risk 16,729.41 6,768.45 13,400.00 6,726.97 59.90 58.22 -125.47 9,492.97 1,836.37 0.44 1,781.27 340.08 1,442.21 Pass-Major Risk 16,754.23 6,769.77 13,425.00 6,728.46 59.97 58.29 -125.47 9.514.58 1,823.88 0.44 1,778.29 340.57 1,438.74 Pass-Major Risk 16,779.05 6,771.09 13,450.00 6,729.95 60.05 58.35 -125.47 9,536.18 1,811.38 0.44 1,775.31 341.07 1,435.26 Pass-Major Risk 16,803.87 6,772.41 13,475.00 6,731.44 60.12 58.42 -125.48 9,557.78 1,798.89 0.44 1,772.33 341,58 1,431.77 Pass-Major Risk 16,828.70 6,773.73 13,500.00 6,732.93 60.19 58.49 -125.48 9,579.38 1,786.39 0.44 1,769.35 342.07 1,428.29 Pass-Major Risk 16,853.52 6,775.05 13,525.00 6,734.42 60.27 58.56 -125.48 9,600.98 1,773.89 0.44 1,766.37 342.57 1,424.81 Pass-Major Risk 16,878.34 6,776.37 13,550.00 6,735.91 60.34 58.63 -125.49 9,622.58 1,761.40 0.44 1,763.39 343.08 1,421.32 Pass-Major Risk 16,903.16 6,777.69 13,575.00 6,737.39 60.42 58.69 -125.49 9,644.18 1,748.90 0.44 1,760.42 343.59 1,417.84 Pass-Major Risk 16,928.00 6,779.01 13,600.00 6,738.63 60.50 58.76 -125.48 9,665.70 1,736.24 0.44 1,757.63 344.09 1,414.54 Pass-Major Risk 16,952.87 6,780.34 13,625.00 6,739.50 60.57 58.83 -125.47 9,687.11 1,723.35 0.44 1,755.10 344.61 1,411.49 Pass-Major Risk 16,977.75 6,781.66 13,650.00 6,740.03 60.65 58.90 -125.44 9,708.39 1,710.24 0.44 1,752.83 345.13 1,408.70 Pass-Major Risk 17,002.64 6,782.98 13,675.00 6,740.20 60.73 58.97 -125.40 9,729.54 1,696.91 0.44 1,750.82 345.65 1,406.17 Pass-Major Risk 17,027.53 6,784.31 13,700.00 6.740.01 60.80 59.04 -125.35 9,750.56 1,683.38 0.44 1,749.06 346.17 1,403.90 Pass-Major Risk 17,052.41 6,785.63 13,725.00 6,739.44 60.88 59.11 -125.28 9,771.45 1,669.65 0.44 1,747.55 346.70 1,401.86 Pass-Major Risk 17,077.27 6,786.95 13,750.00 6,738.51 60.96 59.18 -125.21 9,792.20 1,655.74 0.44 1,746.28 347.23 1,400.06 Pass-Major Risk 17,102.11 6,788.27 13,775.00 6,737.21 61.04 59.25 -125.12 9,812.81 1,641.65 0.44 1,745.25 347.77 1,398.51 Pass-Major Risk 17,126.91 6,789.59 13,800.00 6,735.55 61.12 59.32 -125.02 9,833.27 1,627.39 0.44 1,744.47 348.30 1,397.20 Pass-Major Risk 17,151.71 6,790.91 13,825.00 6,733.79 61.19 59.38 -124.92 9,853.70 1,613.08 0.44 1,743.75 348.83 1,395.97 Pass-Major Risk 17,176.51 6,792.23 13,850.00 6,732.03 61.27 59.45 -124.82 9,874.12 1,598.78 0.44 1,743.04 349.37 1,394.73 Pass-Major Risk 17,201.30 6,793.55 13,875.00 6,730.27 61.35 59.52 -124.72 9,894.55 1,584.47 0.44 1,742.34 349.91 1,393.51 Pass-Major Risk 17,226.10 6,794.86 13,900.00 6,728.51 61.43 59.59 -124.61 9,914.97 1,570.16 0.44 1,741.64 350.44 1,392.29 Pass-Major Risk 17,250.89 6,796.18 13,925.00 6,726.76 61.51 59.66 -124.51 9,935.40 1,555.85 0.44 1,740.94 350.98 1,391.07 Pass-Major Risk 17,275.69 6,797.50 13,950.00 6,725.00 61.59 59.73 -124.41 9,955.82 1,541.54 0.44 1,740.26 351.53 1,389.85 Pass-Major Risk 17,300.48 6,798.82 13,975.00 6,723.24 61.67 59.80 -124.31 9,976.25 1,527.23 0.44 1,739.57 352.08 1,388.64 Pass-Major Risk 17,325.28 6,800.14 14,000.00 6,721.48 61.76 59.87 -124.20 9,996.67 1,512.92 0.44 1,738.90 352.62 1,387.44 Pass-Major Risk 17,350.08 6,801.46 14,025.00 6,719.72 61.84 59.94 -124.10 10,017.10 1,498.62 0.44 1,738.23 353.17 1,386.24 Pass-Major Risk 17,374.87 6,802.78 14,050.00 6,717.96 61.92 60.01 -124.00 10,037.52 1,484.31 0.44 1,737.56 353.72 1,385.04 Pass-Major Risk 17,399.67 6,804.09 14,075.00 6,716.21 62.00 60.08 -123.90 10,057.95 1,470.00 0.44 1,736.90 354.28 1,383.85 Pass-Major Risk 17,424.46 6,805.41 14,100.00 6,714.45 62.08 60.15 -123.79 10,078.37 1,455.69 0.44 1,736.25 354.84 1,382.66 Pass-Major Risk 17,449.26 6,806.73 14,125.00 6,712.69 62.17 60.22 -123.69 10,098.80 1,441.38 0.44 1,735.60 355.40 1,381.48 Pass-Major Risk 17,474.06 6,808.05 14,150.00 6,710.93 62.25 60.29 -123.59 10,119.22 1,427.07 0.44 1,734.95 355.96 1,380.30 Pass-Major Risk 17,498.85 6,809.37 14,175.00 6,709.17 62.33 60.37 -123.48 10,139.65 1,412.76 0.44 1,734.32 356.52 1,379.13 Pass-Major Risk 11/16/2011 12:20:25PM Page 5 of 8 COMPASS 2003.16 Build 73 BP PASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Z-116 Project: Prudhoe Bay TVD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Z-116 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Z-116 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#21 Z-116 Offset ND Reference: Offset Datum Offset Design PB Z Pad- Plan Kup Z-115(NG)v6-Plan Z-115 w/PH-Plan#12 Z-115 v6 Offset Site Error: 0.00ft Survey Program 34-GYD-GC-SS,1000-MWD+IFR+MS,3008-MWD+IFR:AK,5008-MWD+IFR+MS,10412-INC+TREND, Rule Assigned:Major Risk Offset Well Error. 0.00 ft Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toolface+ Offset Wellbore Centre Casing- Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth +N/-S +E/_W Hole Size Centre Distance Deviation (ft) (ft) (ft) (ft) (ft) (ft) () (n) (ft) (It) (ft) Ift) (ft) 17,523.65 6,810.69 14,200.00 6,707.41 62.42 60.44 -123.38 10,160.07 1,398.46 0.44 1,733.68 357.09 1,377.96 Pass-Major Risk 17,54844 6,812.01 14,225.00 6,705.66 62.50 60.51 -123.28 10,180.50 1,384.15 0.44 1,733.06 357.65 1,376.79 Pass-Major Risk 17,573.24 6,813.32 14.250.00 6,703.90 62.58 60.58 -123.17 10,200.92 1,369.84 0.44 1,732.44 358.23 1,375.63 Pass-Major Risk 17,598.03 6,814.64 14,275.00 6,702.14 62.67 60.66 -123.07 10,221.35 1,355.53 0.44 1,731.82 358.80 1,374.48 Pass-Major Risk 17,622.83 6,815.96 14,300.00 6,700.38 62.75 60.73 -122.97 10,241.77 1,341.22 0.44 1,731.21 359.37 1,373.33 Pass-Major Risk 17,647.63 6,817.28 14,325.00 6,698.62 62.84 60.80 -122.86 10,262.19 1,326.91 0.44 1,730.61 359.95 1,372.18 Pass-Major Risk 17,67242 6,818.60 14.350.00 6,696.86 62.92 60.88 -122.76 10,282.62 1,312.61 044 1,730.01 360.53 1,371.04 Pass-Major Risk 17,697.22 6,819.92 14.375.00 6,695.10 63.01 60.95 -122.66 10,303.04 1,298.30 0.44 1,729.42 361.11 1,369.90 Pass-Major Risk 17,722.01 6,821.23 14,400.00 6,693.35 63.10 61.03 -122.55 10,323.47 1,283.99 0.44 1,728.83 361.69 1,368.77 Pass-Major Risk 17,750.55 6,822.48 14,425.00 6,691.59 63.20 61.10 -122.49 10,343.89 1,269.68 0.44 1.728.22 36222 1,367.89 Pass-Major Risk 17,779.31 6,823.17 14.450.00 6,689.83 63.30 61.18 -122.45 10,364.32 1,255.37 0.44 1,727.57 362.76 1,366.97 Pass-Major Risk 17,808.07 6,823.27 14.475.00 6,688.07 63.40 61.25 -122.42 10,384.74 1,241.06 0.44 1,726.85 363.30 1.365.99 Pass-Major Risk 17,836.71 6,822.80 14,500.00 6,686.31 63.50 61.33 -122.41 10,405.17 1,226.75 0.44 1,726.09 363.86 1,364.94 Pass-Major Risk 17,865.39 6,821.76 14,525.00 6,684.55 63.60 61.41 -122.41 10,425.59 1,212.45 0.44 1,725.27 364.42 1,363.82 Pass-Major Risk 17,894.10 6.820.14 14.550.00 6,682.80 63.70 61.48 -122.43 10,446.02 1,198.14 0.44 1,724.40 364.99 1,362.64 Pass-Major Risk 17,922.82 6,817.95 14,575.00 6,681.04 63.80 61.56 -122.46 10,466.44 1,183.83 0.44 1.723.48 365.55 1,361.39 Pass-Major Risk 17,936.50 6,816.70 14,586.91 6,680.20 63.85 61.60 -122.48 10,476.18 1,177.01 0.44 1,723.02 365.82 1,360.77 Pass-Major Risk,CC.ES, 11/16/2011 12:20:25PM Page 6 of 8 COMPASS 2003.16 Build 73 BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Z-116 Project: Prudhoe Bay TVD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Actual @ 87.30ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Z-116 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Z-116 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#21 Z-116 Offset TVD Reference: Offset Datum Offset Design PB Z Pad- Z-116-Z-116PB1-Z-116P61 Offset Site Error 0.008 Survey Program: 73-GYD-GC-SS,965-MWD+IFR+MS,3322-INC+TREND,3421-MWD+IFR+MS,6404-MWD+IFR+MS,6. Rule Assigned:Major Risk Offset Well Error 0.008 Reference Offset Semi Major Axis Measured Vertical Measured Vertical Reference Offset Toolface+ Offset Wellbore Centre Casing- Centre to No Go Allowable Warning Depth Depth Depth Depth Azimuth +Nr$ +E/-W Hole Size Centre Distance Deviation (ft) (ft) (t) (ft) Iff) (8) (1 (ft) (ft) (8) (8) (8) (8) 12,475.00 6,733.78 12,475.00 6,733.77 0.01 0.01 -33.54 6,908.04 5,196.74 0.77 0.00 0.92 -0.90 FAIL-Major Risk,CC 12,500.00 6,749.45 12,500.00 6,749.44 0.04 0.05 -35.84 6,923.97 5,185.52 0.77 0.00 1.34 -1.26 FAIL-Major Risk 12,524.99 6,764.82 12,525.00 6,765.00 0.38 0.08 -150.82 6,940.06 5,174.38 0.66 0.49 2.61 -1.86 FAIL-Major Risk 12,549.89 6,779.20 12,550.00 6,780.43 2.01 0.12 -179.67 6,956.30 5,163.29 0.66 1.73 7.78 -275 FAIL-Major Risk,ES,SF 12,574.36 6,791.40 12,575.00 6,795.74 5.19 0.16 162.66 6,972.69 5,152.25 0.66 5.07 17.65 0.36 Pass-Major Risk 12,598.03 6,801.25 12,600.00 6,810.99 9.97 0.20 156.63 6,989.13 5,141.19 0.66 10.65 32.38 7.30 Pass-Major Risk 12,620.58 6,808.79 12,625.00 6,826.18 16.73 0.25 153.92 7,005.60 5,130.11 0.66 18.31 53.04 11.09 Pass-Major Risk 12,641.81 6,814.18 12,650.00 6,841.30 22.06 0.29 152.44 7,022.12 5,118.99 0.66 27.88 69.22 20.08 Pass-Major Risk 12,661.57 6,817.68 12,675.00 6,856.38 24.02 0.33 151.52 7,038.66 5,107.85 0.66 39.19 75.40 35.54 Pass-Major Risk 12,679.80 6,819.59 12.700.00 6,871.46 24.05 0.37 150.88 7,055.20 5,096.72 0.66 52.10 75.85 44.77 Pass-Major Risk 12,696.50 6,820.23 12,725.00 6,886.54 24.07 0.41 150.42 7,071.75 5,085.60 0.66 66.42 76.28 58.78 Pass-Major Risk 12,711.74 6,819.87 12,750.00 6,901.62 24.09 0.45 150.08 7,088.31 5,074.49 0.66 81.96 76.70 76.05 Pass-Major Risk 12,725.00 6,818.84 12,775.00 6,916.70 24.12 0.50 149.82 7,104.86 5,063.36 0.66 98.58 77.08 90.71 Pass-Major Risk 12,739.01 6,817.03 12,800.00 6,931.77 24.14 0.54 150.13 7,121.39 5,052.20 0.66 116.11 77.45 105.61 Pass-Major Risk 12,758.79 6,814.33 12,825.00 6,946.83 24.17 0.58 155.15 7,137.91 5,041.00 0.66 133.79 77.21 124.05 Pass-Major Risk 12,779.07 6,811.98 12,850.00 6,961.87 24.19 0.63 160.64 7,154.42 5,029.77 0.66 151.18 76.37 142.82 Pass-Major Risk 12,799.53 6,810.07 12,875.00 6,976.97 24.21 0.68 166.40 7,170.85 5,018.50 0.66 168.35 75.00 160.99 Pass-Major Risk 12,819.87 6,808.63 12.900.00 6,992.15 24.21 0.73 172.27 7,187.19 5,007.20 0.66 185.41 73.31 174.21 Pass-Major Risk 12,839.92 6,807.68 12,925.00 7,007.35 24.21 0.78 178.14 7,203.49 4,995.89 0.66 202.37 72.49 185.26 Pass-Major Risk 12,857.88 6,807.09 12,950.00 7,022.56 24.20 0.83 -179.63 7,219.80 4,984.58 0.66 219.33 74.10 196.88 Pass-Major Risk 12,864.91 6,806.87 12,960.00 7,028.64 24.19 0.85 -179.11 7,226.32 4,980.06 0.66 226.15 75.06 201.63 Pass-Major Risk 11/16/2011 12:20:25PM Page 7 of 8 COMPASS 2003.16 Build 73 Project: Prudhoe Bay Site: PB Z Pad Well: Z-116 Wellbore: Z-116 Design: Plan #21 Z-116 From Colour To MD From KOP to TD Scan interval 25ft Scale 1 : 50 12466 12581 Z-116PB1 shown at NOERRORS 12581 17620 0 330 30 e.app 60 I I 270 144l 90 ,12598 -.12 1 12642 12662 5 12680 1269 75 12712 - 25 240 120 Q0 \,1273 12" /12759 12779 150 210 150 112;.. 175 Z-116/Z-116PB1 180 Travelling Cylinder Azimuth (TFO+AZI)[°]vs Centre to Centre Separation [50 ft/in] • i I 37 V w 1Y � t O aaQ 4 5 ,f,., . . 0 :9 ti t . 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Z—PAD`\ j i ,.I \ 6 ■ • 2 % 115 - ■ 29 `I ., 108 : ■• 281 .; Page 1 of 2 Schwartz, Guy L (DOA) From: Schwartz, Guy L (DOA) Sent: Thursday, December 01, 2011 1:14 PM To: 'Warren, Abigail M' Cc: Honas, Kristopher; Saltmarsh, Arthur C (DOA); Allen, Kenneth W Subject: RE: Z-116 PTD#211-124 Abby, Your explanation appreciated and as long as you stay in the C/B Kuparuk sand you will have ample hydrostatic mud weight. Good luck with the rest of the well. Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Warren, Abigail M [mailto:Abigail.Warren@bp.com] Sent: Thursday, December 01, 2011 11:21 AM To: Schwartz, Guy L (DOA) Cc: Honas, Kristopher; Saltmarsh, Arthur C (DOA); Allen, Kenneth W Subject: RE: Z-116 PTD #211-124 Guy, The original PTD which was submitted (before the revision) had the directional which dipped into the A5, so the 9.9 ppg MW would have been needed for pore pressure, originally. But, when the revision of the directional plan was done, the directional plan only dipped into the B shale so the 9.9 ppg MW was strictly for hole stability. We did drill into the B-shale during the last directional plan, but we do not plan on drilling into the shale this time. The expected max pore pressure for this wellplan will be an 8.2 ppg, we expect to stay in the C-sands. With a lowered mud weight of 8.6 ppg we will be-140 psi overbalanced to our 8.2 ppg Kuparuk reservoir, which we feel comfortable with. We do not expect that crossing these faults will be any issue in regards to finding higher mud weights. With the thickness of the B shale we do not see any chance of getting into the A sand after crossing either of the faults. We have already drilled the pilot hole and the plug back so we have a good idea of thicknesses and the throw of the first fault, so we see no chance of entering the B shale on the first fault crossing. On the second fault crossing there is a risk of entering the B shale but not the A sand so only hole stability is a concern, NOT well control. Please let me know if you need me to elaborate further. Thanks Abby From: Schwartz, Guy L (DOA) [mailto:guy.schwartz@alaska.gov] Sent:Thursday, December 01, 2011 10:15 AM To: Warren, Abigail M Cc: Honas, Kristopher; Saltmarsh, Arthur C(DOA) Subject: RE: Z-116 PTD #211-124 Abby, 12/1/2011 Page 2 of 2 I looked at the Borehole profile you provide and your plan as outlined below is within the scope of the approved PTD. You will be redrilling the section again and need to stay within 500' from the permitted wellpath. The abandoned OH section is all within the Kuparuk zone so cement is not needed to isolate this from any other zones. Can you further elaborate on the mud weight change you are requesting? Your expected max mud weight for this zone was 9.6 ppg according to the PTD. Obviously you have already drilled into this zone for part of the planned wellpath and have a better idea of what the actual BHP is. Are you comfortable with dropping the weight that much? Are there any issues with finding higher pressures on faults you may cross while drilling further out from the motherbore? Regards, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Warren, Abigail M [mailto:Abigail.Warren@bp.com] Sent: Thursday, December 01, 2011 8:54 AM To: Schwartz, Guy L(DOA) Cc: Honas, Kristopher Subject: Z-116 PTD #211-124 Guy, I wanted to give you a heads up on operations moving forward on Z-116. Doyon 14 was drilling ahead in the production hole when we crossed the first fault in this section. Losses were incurred and 4 LCM pills pumped plus a cement squeeze. The losses could not be healed. Our current plan forward is to set an open hole ECP plug -300' below the window and pump a cement balanced plug. We will bring cement back into the window and across the whipstock. The next BHA will be a cleanout BHA, once we run in with this BHA we will be swapping from oil based mud to water based mud. With the cleanout BHA we will clean off the whipstock and POOH. We will then RBIH with the drilling assembly and kick off using the same whipstock and redrill the build and lateral section. I should note that once swapped over to water based mud, the mud weight will be reduced down to-8.6 ppg. The original permit called for a mud weight of a 9.9 ppg. This was to control the B shale in the Kuparuk since the original wellplan dipped down into that formation. The current wellplan has high enough doglegs to avoid dipping into this shale, so this is the reason that we can reduce our mud weight. The thought is with the reduction of mud weight we should be able to control losses easier if they are encountered again. Please feel free to contact me with any questions Abby Warren Drilling Engineer BPXA W-564-5720 C-240-9293 12/1/2011 Page 1 of 1 Schwartz, Guy L (DOA) From: Warren, Abigail M [Abigail.Warren©bp.com] Sent: Thursday, December 01, 2011 9:45 AM To: Schwartz, Guy L (DOA) Subject: Z-116 BHP horizontal section Guy, Here is the screen shot. Our new wellplan is not on here as it is not finalized. Z-116i Horizontal Borehole Profile 6500 6550 Fa di -J Fuult5 6600 - "t P-"" pore. -0000 I 6650• • ,- IvdubIk 11.04 ; 6700 11111 - --.m11011011111e141111.11111.6L:'......-‘41111/111L. AggilliPI ` > 6750 .. d� �r ` 6800 - 5 t t = 1 4.c • 0.14- 6850 - 6900 - Fes--K�13 1 ge..„4 6950 - TI)PB-I 12960'.694 l'TCD. I 7000 ( : : : I • I : : . • I I _ 1t1 1 c. Measured Depth o....../O.-- /„.../e....a«.w... /.n n..a.w..\m_s•..•...../u....e..I. I n.•..r.... /n...u., /n.... / a.10... /m.. /m,i•...••..•.-... / Abby Warren Drilling Engineer BPXA W- 564-5720 C-240-9293 12/1/2011 Z-116i BOPE Useage Report Page 1 )f 1 Regg, James B (DOA) From: Rall, John R [RalIJR2@BP.com] Sent: Monday, November 28, 2011 11:07 AM To: Regg, James B (DOA) Subject: RE: Z-1161BOPE Useage Report The date of the well shutin by Doyon 14 was 11/24/11. Sorry about the omission. From: Regg, James B (DOA) [mailto:jim.regg@alaska.gov] Sent: Monday, November 28, 2011 10:03 AM To: Regg, James B (DOA); Rall,John R Cc: Daniel, Ryan; Kilfoyle, Jeffery A; Allen, Kenneth W; Rossberg, R Steven; Cismoski, Doug A; Sheffrey, Tom (Fircroft); AK, D&C Rig 14 Well Site Leader; AK, D&C Base Operations Superintendent; DOA AOGCC Prudhoe Bay Subject: RE: Z-116i BOPE Useage Report is date of use 11/25/11?only a time is identified on report Jim Regg AOGCC 333 W.7th Avenue,Suite 100 Anchorage,AK 99501 907-793-1236 From: Regg, James B (DOA) Sent: Monday, November 28, 2011 9:59 AM To: 'Rall, John R' Cc: Daniel, Ryan; Kilfoyle, Jeffery A; Allen, Kenneth W; Rossberg, R Steven; Cismoski, Doug A; Sheffrey, Tom (Fircroft); AK, D&C Rig 14 Well Site Leader; AK, D&C Base Operations Superintendent; DOA AOGCC Prudhoe Bay Subject: RE: Z-116i BOPE Useage Report Again, I am requesting that you identify the rig within your report. Jim Regg AOGCC 333 W.7th Avenue,Suite 100 Anchorage,AK 99501 907-793-1236 From: Rail,John R [mailto:RalIJR2@BP.com] Sent: Friday, November 25, 2011 5:57 PM To: DOA AOGCC Prudhoe Bay Cc: Daniel, Ryan; Kilfoyle, Jeffery A; Allen, Kenneth W; Rossberg, R Steven; Cismoski, Doug A; Sheffrey, Tom (Fircroft); AK, D&C Rig 14 Well Site Leader; AK, D&C Base Operations Superintendent Subject: Z-1161 BOPE Useage Report «Z-116 BOPE usage (2).doc>> John Rall Wells Operations Drilling Superintendent Office: 659-4618 Cell: 980-2589 11/28/2011 Z-116i BOPE Useage Report Page 1 of 1 Regg, James B (DOA) F D Z/(-( Z-4 From: Rall, John R [RalIJR2@BP.com] Sent: Monday, November 28, 2011 11:06 AM ` ( I(1*l( To: Regg, James B (DOA) Subject: RE: Z-116i BOPE Useage Report The rig is Doyon Rig 14. From: Regg, James B (DOA) [mailto:jim.regg@aiaska.gov] Sent: Monday, November 28, 2011 9:59 AM To: Rall, John R Cc: Daniel, Ryan; Kilfoyle, Jeffery A; Allen, Kenneth W; Rossberg, R Steven; Cismoski, Doug A; Sheffrey, Tom (Fircroft); AK, D&C Rig 14 Well Site Leader; AK, D&C Base Operations Superintendent; DOA AOGCC Prudhoe Bay Subject: RE: Z-116i BOPE Useage Report Again, I am requesting that you identify the rig within your report. Jim Regg AOGCC 333 W.7th Avenue,Suite 100 Anchorage,AK 99501 907-793-1236 From: Rall, John R [mailto:RaIIJR2@BP.com] Sent: Friday, November 25, 2011 5:57 PM To: DOA AOGCC Prudhoe Bay Cc: Daniel, Ryan; Kilfoyle, Jeffery A; Allen, Kenneth W; Rossberg, R Steven; Cismoski, Doug A; Sheffrey, Tom (Fircroft); AK, D&C Rig 14 Well Site Leader; AK, D&C Base Operations Superintendent Subject: Z-116i BOPE Useage Report <<Z-116 BOPE usage (2).doc» John Rall Wells Operations Drilling Superintendent Office: 659-4618 Cell: 980-2589 11/28/2011 Z-146i BOPE Useage Report4110 Page 1 of 1 Regg, James B (DOA) From: Rall, John R [RallJR2@BP.com] Sent: Friday, November 25, 2011 5:57 PMer To: DOA AOGCC Prudhoe Bay Cc: Daniel, Ryan; Kilfoyle, Jeffery A; Allen, Kenneth W; Rossberg, R Steven; Cismoski, Doug A; Sheffrey, Tom (Fircroft); AK, D&C Rig 14 Well Site Leader; AK, D&C Base Operations Superintendent Subject: Z-116i BOPE Useage Report Attachments: Z-116 BOPE usage (2).doc «Z-116 BOPE usage (2).doc>> John Rall Wells Operations Drilling Superintendent Office: 659-4618 Cell: 980-2589 11/28/2011 Blow Out Preventer Equipment ( BOPE ) Usage Report to the AOGCC 'tlz61" The purpose of this document is to ensure timely reporting to the AOGCC of any BOPE use to prevent the flow of fluids from a well. Field Superintendent Name: John Rall Wellsite Leader Name: Blair Neufeld/Frank Roach Contact Number: 659-4618 Contact Number: 659-4503 Traction Number: 2011-IR-3999716 Well Location & Name: Z Pad Z-116 Permit To Drill (PTD) Number: 2111240 Date and Time of Incident: 04:15 itI2,4I„ Original Scope of Work: Drilling 6-1/8" production hole with 9.9 ppg oil base mud. Crossed fault and started loosing returns. Operational Description Leading up to Well Control Event: Well had been taking fluid so LCM was pumped in an attempt to cure losses. BOPE Used and Reason: Well began to flow back when the pumps were shut off. Top rams (3-1/2" x 6" VBR) were used to shut `/ in. Is a BOPE Test Required after use ( Yes / No): If no, why? Yes. Request to perform biweekly BOP's granted by John Crisp. 24 hour notice required to NS AOGCC Inspectors prior to testing BOPE components. Plan Forward: Pump 80 bbl LCM pill while pulling out of open hole into casing. Squeeze away 60 bbis LCM. Monito flowback. Hang off drill string with RTTS and perform biweekly BOP test. L/D RTTS. RIH and drill ah Additional Comments: r241 _ botpt (4 Email to AOGCC North Slope Inspectors within 24 hours of the incident: doa.aogcc.prudhoe.bay(a�alaska.gov Email CC List Well Integrity Team Leader Ryan Daniel HSE Advisor Jeff Kilfoyle Engineering Team Leader Ken Allen, John Egbejimba, John McMullen, Dave Reem Wells Operations Manager Steve Rossberg Wells Intervention Manager Doug Cismoski Organizational Capability Tom Sheffrey BOPE Usage Report for AOGCC August 2, 2010 HRE 1 FW: PTD#211-124 (Z-116) r 'ctional Plan change Page 1 of 2 Maunder, Thomas E (DOA) From: Maunder, Thomas E (DOA) Sent: Friday, November 18, 2011 8:16 AM To: 'Ciolkosz, Ryan R' Subject: RE: PTD#211-124 (Z-116) Directional Plan change Ryan, I am covering while Guy is gone. We will look forward to the revised permit application. Please get it in as soon as possible. Tom Maunder, PE AOGCC From: Ciolkosz, Ryan R [mailto:Ryan.Ciolkosz©bp.com] Sent: Thursday, November 17, 2011 4:03 PM To: Maunder, Thomas E (DOA) Subject: FW: PTD# 211-124 (Z-116) Directional Plan change Tom, looks like Guy is on vacation, who should I send the information below to? Thank you, Ryan Ciolkosz Drilling Engineer BP Exploration Alaska Office: (907)564-5977 Cell: (907)244-4357 From: Ciolkosz, Ryan R Sent: Thursday, November 17, 2011 3:49 PM To: Schwartz, Guy L (DOA) Cc: Hubble, Terrie L; Allen, Kenneth W Subject: PTD# 211-124 (Z-116) Directional Plan change Guy, Information learned from the Pilot Hole of Z-116 has triggered a revision of directional plan for the horizontal section of Borealis injector Z-116 to optimize well location relative to structure and OWC. Data from Z-116PB1 pilot hole indicated top of Kupaurk reservoir(TKC4) approximately 40 ft. tvdss high to original SOR prognosis. This change in structure has resulted in a northward shift in the position of the OWC by approximately 500 ft. Revision of the target polygon and directional plan for the horizontal section is required to position the well below the OWC for optimal sweep to offset producers (existing producer Z-113 and future producer Z-115). 11/28/2011 `FW: PTD#211-124 (Z-116) ctional Plan change Page 2 of 2 Currently we have 7" casing set below the base of the Kuparuk at 12,945' MD. We are currently preparing to pick up and run our whipstock to mill out of the 7" casing. Once we are finished milling the window, we will perform our FIT/LOT as per the current Permit. We would like to get your verbal approval to change TD by more than 500' (See attached directional Program) as we will begin drilling the production hole section in the next day or two. We will also be submitting a new application for Permit to Drill. Thank you, <<Z-116 Sliding sleeve and swellpacker2.pdf>><<Z-116(P21) plan survey.xlsx>><<Z-116 (P21) BP AC detailed report.pdf>> Ryan Ciolkosz Drilling Engineer BP Exploration Alaska Office: (907)564-5977 Cell: (907)244-4357 11/28/2011 PTD#211-124 (Z-116) Direct nal Plan change Page 1 of 2 I Schwartz, Guy L (DOA) From: Schwartz, Guy L (DOA) Sent: Thursday, November 17, 2011 4:10 PM To: 'Ciolkosz, Ryan R' Cc: Saltmarsh, Arthur C (DOA); Norman, John K(DOA); Seamount, Dan T(DOA) Subject: RE: PTD#211-124 (Z-116) Directional Plan change Ryan, You have verbal approval to proceed with the change as proposed below. Please submit the revised PTD as soon as possible. Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Ciolkosz, Ryan R [mailto:Ryan.Ciolkosz@bp.com] Sent: Thursday, November 17, 2011 3:49 PM To: Schwartz, Guy L (DOA) Cc: Hubble,Terrie L; Allen, Kenneth W Subject: PTD# 211-124 (Z-116) Directional Plan change Guy, Information learned from the Pilot Hole of Z-116 has triggered a revision of directional plan for the horizontal section of Borealis injector Z-116 to optimize well location relative to structure and OWC. Data from Z-116PB1 pilot hole indicated top of Kupaurk reservoir(TKC4) approximately 40 ft. tvdss high to original SOR prognosis. This change in structure has resulted in a northward shift in the position of the OWC by approximately 500 ft. Revision of the target polygon and directional plan for the horizontal section is required to position the well below the OWC for optimal sweep to offset producers (existing producer Z-113 and future producer Z- 115). Currently we have 7" casing set below the base of the Kuparuk at 12,945' MD. We are currently preparing to pick up and run our whipstock to mill out of the 7"casing. Once we are finished milling the window, we will perform our FIT/LOT as per the current Permit. We would like to get your verbal approval to change TD by more than 500' (See attached directional Program) as we will begin drillingtheheproducti n hole section in then next dayor two. W will also be submitting a new application for Permit to Drill. Thank you, <<Z-116 Sliding sleeve and swellpacker2.pdf>> <<Z-116 (P21) plan survey.xlsx>> <<Z-116 (P21) BP AC detailed report.pdf» Ryan Ciolkosz 11/17/2011 PTD#211-124 (Z-116) Direct-)nal Plan change Page 2 of 2 Drilling Engineer BP Exploration Alaska Office: (907)564-5977 Cell: (907)244-4357 11/17/2011 m0a 0 o a ' o r - COC0 - - 0 O � v0 ° (n a r ° CO ; r 3 CD 0 0 3 _ Uj N N o N ,w.. rn -.0 - 0 - o -, 0 o A .'a O n" N N d N 5f 7 O E O O (D O N O (D CD - 0 CJ w w w w w w w w w N N N N N N N Ni N N _, (O CO -71 0) 01 A w N 0 n (O CO J 0) 0) A w N -sO CO 0) -71 0) 0) A w N -s0 (0 CO O) 0) A w N -, 0 -71 "30 m CO CD N 0 (/) w0m CE 00000000 D D0) 000 (A0 - v_ * 0 -0 -0OOa0) * * gcr -0z = n 0 0 m (D N m 0 C- 0 0 7 a a v a m c o = ° m m -o -o a c 7 m m 0 X o - -1 m m m m m w n) a5. o m < ( m m C) m C m .0 C' < < v a -o _ 3 3 <_ _ _ _ 3 n W r c C < < 0 c r, -- ,r O 0 O_ Ci •-• 7 ND _ . 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N 2 co 0) D cr N c 7m 7 o T v 6 O a 0 m c-,3' m 9' o m cra TO N m n) - (D m J J Page 1 of 1 Schwartz, Guy L (DOA) From: Schwartz, Guy L (DOA) Sent: Wednesday, October 05, 2011 10:00 AM To: 'Warren, Abigail M' Cc: Allen, Kenneth W Subject: RE: Z-116i PTD 211124 Abby, Thanks for the update on moving the 9 5/8" intermediate liner TD. This minor change in depth does not require any permitting changes... I assume you are still planning to fully cement the liner as per the original plan. Good luck with the rest of the well. Regards, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Warren, Abigail M [mailto:Abigail.Warren@bp.com] Sent: Tuesday, October 04, 2011 4:38 PM To: Schwartz, Guy L(DOA) Cc: Allen, Kenneth W Subject: Z-116i PTD 211124 Guy, As discussed on the phone, we are moving our 9-5/8" casing point from —6107' MD down to —6457' MD in order to put a fault behind pipe for the upcoming hole section. Please let me know if you have any questions. Thanks Abby Abby Warren Drilling Engineer BPXA W-564-5720 C-240-9293 10/5/2011 South(-)/North(+) [ft] , , O . . N N W W . - L OC C!, JS O c,, O L' O VI CD C./i O O O O 4 O O O CD cD CD CD 44. O -ie O 4 O 4 O O O 4 CD CD CA Ii ..,1 ii „ IiiiiiiiiiIiiIiii , Iii , iIiiiiIiiiii II IIS , :iC 0 IV ?r < i OmL ° W r0 CDSt o Po CA CD Z. o rt z V -. ro O M� x CD p ii n F. co A) n •.. �' , :� n A7 ,� � - N (/ �o _ :.- .--,-- o CD -a '� LA D ° CD Cr o cz CD b u' CD Immi et Cr co 0 0 o n et Se) *..., rt o D ti 00 Y o 0 c I "Z. 00 Z o Z `0 > cvTrzrr- , 8A 3 SEAN PARNELL,GOVERNOR „_).) Li U LJ nZE ALASKA OIL AND GAS 333 W.7th AVENUE,SUITE 100 CONSERVATION COMMISSION ANCHORAGE,ALASKA 99501-3539 PHONE (907)279-1433 FAX (907)276-7542 Ken Allen Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 196612 Re: Prudhoe Bay Field, Borealis Pool, Z-116 BP Exploration (Alaska), Inc. Permit No: 211-124 Surface Location: 4564' FSL, 3511' FEL, SEC. 19, T11N, R12E, UM Bottomhole Location: 5021' FSL, 1222' FEL, SEC. 07, T11N, R12E, UM Dear Mr. Allen: Enclosed is the approved application for permit to drill the above referenced service well. 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 Z-116 PBI PH and API number 50-029-23455-70 from records, data and logs acquired for well Z-116. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, Daniel T. Seamount, Jr. Chair DATED this day of September, 2011. cc: Department of Fish 85 Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA • ALAS' )IL AND GAS CONSERVATION COMM! 7N RECEIVE. fi PERMIT TO DRILL SEP 14 201; 20 AAC 25.005 9 // la.Type of work: lb.Proposed Well Class: 0 Development Oil 0 Service-Winj 0 Single Zone U aweir SP 6 ' 'i' ' X011 ® Drill 0 Redrill 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone Coalbed Ga ■ •s `y ra es8 0 Re-Entry 0 Exploratory IN Service-WAG 0 Service-Disp A • [d'•:. Bias 2. Operator Name: 5.Bond: ® Blanket 0 Single Well 11. Well Name - : Number: BP Exploration(Alaska) Inc. Bond No. 6194193 Z-116 3. Address: 6. Proposed Depth: 12.Fiel. -ool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 17616' TVD 6772' : dhoe Bay Field/Borealis 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Pool Surface: ADL 028262&047450 4564'FSL,3511'FEL,SEC.19,T11N,R12E,UM (As Planned) Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 2356'FSL,659'FWL. SEC.08,T11N, R12E, UM October 15,2011 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 5021'FSL, 1222'FEL, SEC.07,T11N, R12E, UM 2560 14,000' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above L: 87.8' feet 15.Distance to Nearest Well Open Surface: x- 599162 y-5959360 Zone- ASP4 GL Elevation ab. - MSL: 53.5' feet to Same Pool: 3250' 16.Deviated Wells: Kickoff Depth: 300' feet 17.Maximum Ant pated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 100 degrees Downhole• 3381 Surface: 2703 18. Casing Program: Specifications T.•-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling_ Length • TVD MD ND (including stage data) 42" 20" 129.5# . X-65 Weld , 80' rfaceSurface. 80' 80' 260 sx Arcticset(Aoorox.) 16" _ 13-3/8" 68# L-80 BTC _ 3442' Surface,Surface, 3442' 2388' 2312 sx DeeoCrete.565 sx Class'G' ' 12-1/4" 9-5/8" 40# L-80 BTC 28 .' 3291' , 2330 _ 6107' 3388' 374 sx LiteCrete.600 sx Class'G' 8-3/4" 7" 26# L-80 VamTop HC 1 :53' Surface,Surface_ 12853' 6963' 557 sx LiteCrete.98 sx Class'G' - 6-1/8" . 4-1/2" 12.6# L-80 TCII 5185' 12431', 6690' _ 17616' 6772' Uncemented Slidina Sleeves 19. PRESENT WELL CONDITi SUMMARY(To be completed for Redrill and Re-entry Operations) Total Depth MD(ft): Total Depth ND(ft): Plug easured): Effective Depth MD(ft): Effective Depth TVD(ft): Junk(measured): Casing Length rz- 40 Cement Volume MD ND Conductor/Structural Surface Intermediate i Production Liner roY ,u Perforation Depth MD(ft): Perforation Depth ND(ft): 20.Attachments: 0 Pro• Pat ®BOP Sketch ®DrillingProgram 0 Time vs Depth Plot 0 Shallow Hazard Analysis rty 09PY ®Diverter Sketch 0 Seabed Report ®Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify at the foregoing is true and correct. Contact Abby Warren,564-3148Q CI tO Printed Na Ken Allen Title Engineering Team Leader Prepared By Name/Number Signaturs Phone 564-4366 Date 9 1y illy Terrie Hubble,564-4628 Commission Use Only Permit To Drill API Number: Permit A r v I D te: See cover letter for Number: ..a.?//4774.150-6%9e?�sCS�0000. 1d l 1 i k other requirements Conditions of Approval:a-If box is checked,well [Jf Tmay not be used to explore for,test,or produce coalbed methane,gas hydrates,or gas contained shales: Other ' T_�' 30 P 'G S F - \ Samples Req'd: [lyres "No Mud Log Req'd: ❑Yes liNo .�•f 4,r j,„,� CS . (5'''""`1 HZS Measures: es 0 No Directional Survey Req'd:p 'Yes 0 No -) 0 02 5 oa pst. f/ `. *at/ t oco' Lo d44' Zs: 033(j)) -6 !FE c 6l- e"iS"'�`1/ - a/4i.,,,i `grc4 :el- ,n cie�o�� 4 4Eo Z`TI� )))) APPROVED BY THE COMMISSION 7/ Z(I VI Date ,COMMISSIONER Form 10-401 Revised 07/20E19 This permit is valid for 24 months from the date of approval(20 AAC 25.005(g)) Submit In Duplicate 0 �,// Well Name: Z-116i Drill and Complete Plan Summary Name Position Office Home Cell Abby Warren Drilling Engineer 5720 688-2895 240-9293 Stephen Crumley Geologist 4078 726-5640 441-1478 Bob Dawson Ops Geologist 5264 345-3359 242-2391 Mike Francis Pad Engineer 4240 644-0534 529-8678 Type of Well (service / producer/ injector): WAG Injector ' Targets Northing Easting TVDss Offsets TRS Surface 5959360 599162 Na 4564' FSL / 3511' FEL 11N, 12E, 19 Pilot Hole BHL 5966575 604117 6875 1152' FSL / 3712' FEL 11N, 12E, 8 Horizontal Section Target 5967766 603188 6767 2356' FSL /4620' FEL 11N, 12E, 8 Target 5968861 602538 6700 3459' FSL / 5251' FEL 11N, 12E, 8 Target 5969844 601713 6742 4453' FSL / 780' FEL 11N, 12E, 7 BHL 5970405 601261 6684 5021' FSL / 1222' FEL 11 N, 12E, 7 API NUMBER: TBD Rig: Doyon 14 Estimated Start Date: 10/15/2011 Operating Days to complete: 38.6 MD: 17616' TVD: 6772' RT/GL: 34.3/53.5 RTE: 87.8' Well Design: Grassroots Kuparuk Horizontal Injector 4 1/2" L-80 tubing with 4 1/2" solid liner with swell packer and sliding sleeve design Objective: Drill a pilot hole to evaluate both the Kuparuk and Schrader. Drill and complete new Kuparuk C sand horizontal injection well Directional Plan: Version: SLB P13 (PB1) and P16 KOP: 300' MD Maximum Hole Angle: 100° horizontal section Close Approach Wells: All wells pass major risk criteria. Reference anti-collision report Nearest well within Pool Z-116i is 3250' from closest well (V-122) Distance to Nearest Property 14,000' to PBU boundary Line: Z-116i Permit Application Page 1 • Logging Program: Surface Interval Drilling, MWD, Gyro: GR, RES Open Hole: None Cased Hole: None Intermediate Liner 1 Drilling, MWD: GR, RES Open Hole: None Cased Hole: None Intermediate Casing Drilling, MWD: GR, RES, NEU, Density, PWD Open Hole: None Cased Hole: Cement Bond Log Production Interval Drilling, MWD: GR, RES, NEU,Azimuthal Density Caliper Open Hole: None Cased Hole: None Mud Program: 16" Surface Hole: Fresh Water Drilplex Mud Density Funnel Viscosity LSYP Yield Point API FL aH (ppg) (seconds) (2x3-6 rpm) (Ib/100ft1) (mis/30min) Spud to TD 8.8—9.5 - 60-120 (for reference 28—50 40—80 NC 10.8 only. Fluid should be run off LSYP) 12 1/4" Intermediate Hole: LSND Interval Density (ppg) YP PV pH API Fluid Loss Shoe to TD 8.8-9.5 • 25-28 12-18 9- 10 < 8.0 8 3/4" Intermediate Hole: LSND Interval Density (ppg) YP PV pH API Fluid Loss Csg Shoe to CM1 9.0 20—28 12 — 18 9— 10 < 6.0 CM1 to TD 9.9 - 10.6 • 20-28 12 -22 9- 10 < 4.0 6 1/8" Production Hole: Rheliant Mineral Oil Based Mud Interval Density (ppg) YP PV MLVolts HTHP Fluid Loss Csg Window to TD 9.9-10.1 10-20 <35 >350 < 5.0 Casing/Tubing Program: Hole Size Csg/Tbg O.D. WtIFt Grade Connection Length Top Btm MD/TVD MD/TVD RTE 42" 20" 129.5 X-65 WLD 80' GL 80'/80' 16" 13-3/8" 68 _ L-80 BTC _ 3442' GL 3442' /2388' 12-1/4" 9-5/8" 40 L-80 BTC 2816' 3291'/2330' 6107' /3388' 8-3/4" 7" 26 L-80 Vamtop HC 12853' GL 12853'/6963' 6 W' 4 W 12.6 L-80 TCII 5185' 12431' /6690' 17616' /6772' Tubing 4 W 12.6 L-80 TCII 12431' GL 12431' /6690' Z-116i Permit Application Page 2 Integrity Testing: Test Point Depth Test Type 13-3/8" Surface Casing 20' —50' from surface shoe LOT Test Point Depth Test Type 9 5/8" Intermediate Liner 20' — 50' from intermediate liner shoe LOT Test Point Depth Test Type 7" Intermediate Casing 20' — 50' from window LOT Cement Calculations: Surface Casing: Casing Size 13 '/8" Basis: Lead: Open hole volume + 350% excess in permafrost, 40% excess below permafrost. Port collar used if necessary. Lead TOC: Surface Tail: 40% excess + 80' shoe track. Tail TOC: 1000' MD above the casing shoe Total Cement Volume: Lead 766 bbl /4300 fe/2312 sks of DeepCrete at 11.0 ppg and 1.86 cf/sk Tail 117 bbl /655 ft'/565 sks of Class `G' at 15.8 ppg and 1.16 cf/sk Intermediate Liner: Casing Size 9 5/8" Basis: Lead: Open hole volume with 40% excess. Lead TOC: 200' above liner top Tail: Open hole volume 40% excess + 80' shoe track. Tail TOC: 1510' MD above the liner shoe Total Cement Volume: Lead 126bb1/707 ft'/374 sks of LiteCRETE at 11 ppg and 1.89 cf/sk Tail 124 bbl /696 fe/600 sks of Class `G' at 15.8 ppg and 1.16 cf/sk Intermediate Casing: Casing Size 7" Basis: Lead: Open hole volume with 30% excess. Lead TOC: 1000' MD below drilling liner shoe. (-7106' MD) Tail: Open hole volume with 30% excess + 80' shoe track volume Tail TOC: 8180' MD (1000' MD above shoe) Total Cement Volume: Lead 183 bbl / 1026 fe/ 557 sks of LiteCRETE at 11 ppg and 1.84 cf/sk Tail 21 bbl/ 115 ft'/98 sks of Class 'G' at 15.8 ppg and 1.17 cf/sk Z-116i Permit Application Page 3 Formation Markers: Estimated Depth Hydrocarbon Estimated Pore Pressure Formation Formation Top Uncertainty Bearing Pore Pressure Uncertainty (TVDss) (+/-ND ft) (Yes/No) (EMW ppg) (EMW+/-ppg) G1 -265 +/-30' 8.4 +0.05/-0.05 SV6 -1015 +/-30' 8.4 +0.05/-0.05 EOCU -1605 +/-30' 8.4 +0.05/-0.05 Fault 1 (Highland -1700 +1-100'M.D.-See State Fault) Fault Detail Section SV5(faulted out) SV4 -1710 +/-30' Potential Hydrate 8.4 +0.05/-0.05 BPRF -1845 +/-30' 8.4 +0.5/-0.05 SV3 -2170 +/-30' Hydrates 8.7 +0.2/-0.35 SV2 -2345 +/-30' Hydrates 8.7 +0.2/-0.35 SV1 -2735 +/-30' Hydrate/Free gas 8.7 +0.2/-0.35 UG4 -3135 +/-30' Hydrate/Free gas 8.7 +0.6/-0.35 UG4A -3200 +/-30' Hydrate/Free gas 8.7 +0.1 /-0.35 Fault 2 3375 +/- 100'M.D.-See Fault Detail Section UG3(Faulted Top) -3375 +1-30' Possible hydrates/ 8.7 +0.1 /-0.35 Free gas UG1 -3865 +/-30' Possible heavy oil 8.7 +0.1 /-0.35 UG Ma -4225 +/-30' Heavy oil? 8.7 +0.1 /-0.35 UG_Mb1 -4275 +/-30' Wet? 8.7 +0.1 /-0.35 Fault 3 4320 +1-100'M.D.-See Fault Detail Section UG_Mb2(faulted -4320 +/-30' Heavy oil? 8.7 +0.1 /-0.35 top) UG_Mc -4370 +/-30' Heavy oil? 8.7 +0.1 /-0.35 SB_Na -4455 +/-30' No 8.7 +0/-0.25 SB_Nb -4485 +/-30' Possible oil 8.7 +0/-0.25 SB_Nc -4520 +/-30' No 8.7 +0/-0.25 SB OA -4645 +/-30' Possible oil 8.7 +0/-0.25 SB_OBa -4705 +/-30' Possible oil 8.7 +0/-0.25 SB_OBb -4745 +/-30' Possible oil 8.7 +0/-0.25 SBOBc -4810 +/-30' Possible oil 8.7 +0/-0.25 SB__OBd -4865 +/-30' Possible oil 8.7 +0/-0.25 SBOBe -4935 +/-30' Possible oil 8.7 +0/-0.25 S _OBf -4980 +/-30' No 8.7 +0/-0.25 SB_OBf_Base -5035 +/-30' No 8.7 +0/-0.25 CM2 -5315 +/-30' No 8.7 +0/-0.25 CM1 -6040 +/-30' No 9.4 +0.8/0 TLBK -6305 +20'/-50' No 9.4 +1.3/0 THRZ -6490 +20'/-50' No 9.4 +0.9/0 TKLB -6680 +20'/-50' No 9.4 +0.9/0 TKC4 -6700 +20'/-50' Oil/water 9.6 +0.8/-3.2 TKC1 of -6715 +20'/-50' Water 9.6 +0.8/-3.2 TKB/LCU -6740 +20'/-50' Water 9.6 +0.8/-1.15 TKA6 6760 +20'/-50' Water 9.6 +0.8/-1.15 TKA5 6765 +20'/-50' Water 9.6 +0.8/-1.15 TMLV 6815 +20'/-50' Water 9.6 +0.7/0 +/- 100'M.D. -See Fault4 -6700 Fault Detail Section +/- 100'M.D. -See Fault 5 -6700 Fault Detail Section Comments PPFG predictions are derived from the approved Z-Pad PPFG type curve. Estimated pore pressures in table are most likely pressures. Picks from TLBK to TMLV are isopached from the TKC4,which is derived from the deepest solution of a series of Time/Depth conversions,explaining the+20/-50'depth uncertainty. See tech package for more detailed explanation. Z-116i Permit Application Page 4 Well Control: 16" hole will be drilled with diverter. The 12-1/4", 8 3/4" intermediate hole and 6 %8' production hole sections will use well control equipment consisting of 5000 psi working pressure pipe rams(2), blind/shear rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Annular preventer will be tested to 3500 psi. Rams will be tested to 4000 psi. The BOP test frequency will be conducted on a 14 day frequency, with a function test every 7 days. Except for significant operational issues that may effect well integrity or pose safety concerns, an extension to the 14 day BOP test period should not be requested. Diverter, BOPE and drilling fluid system schematics of Doyon 14 are attached to this permit to drill. 16" Surface 13-3/8" Casing BOPE A tested diverter system per AOGCC regulations Maximum Anticipated BHP 1080 psi @ 2,387 TVD, 8.7 ppg EMW Maximum Surface Pressure 840 psi (0.10 psi/ft gas gradient to surface) Planned BOP test pressure Function Test 13-3/8" Casing Test 3,500 psi surface pressure Integrity Test-12.25" Hole FIT/LOT after drilling 20-50' of new hole Kick Tolerance 50 bbls with a 10.6 ppg 12-1/4" Intermediate ' 9-5/8" Liner BOPE Hydril, 13-%", 5000 psi Maximum Anticipated BHP 1532 psi @ 3,387' TVD, 8.7 ppg EMW Maximum Surface Pressure 1,193 psi (.10 psi/ft gas gradient to surface) Planned BOP test pressure Rams test to 4,000 psi/250 psi. Annular test to 3,500 psi/250 psi 9-5/8" Liner Test 3,500 psi surface pressure Integrity Test—8-3/4" Hole FIT/ LOT after drilling 20'—50' of new hole Kick Tolerance 50 bbls with a 12.1 ppg 8-3/4" Intermediate 7" Casing BOPE Hydril, 13-W, 5000 psi ,n A Maximum Anticipated BHP 3,381 psi 6,772' TVD. 9.6 DDg EMW✓ fi Maximum Surface Pressure 2,703 psi (0.10 psi/ft gas gradient to surface) �C Planned BOP test pressure Rams test to 4,000 psi/250 psi. Annular test to 3,500 psi/250 psi 7" Casing Test 7 4,000 psi surface pressure Integrity Test—6-%," Hole FIT/ LOT after drilling 20'—50' of new hole Kick Tolerance Infinite with a 10.4 ppg Planned Completion Fluids Corrosion Inhibited Brine/ Diesel Disposal: • No annular disposal in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS-04. • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS-04 for disposal. Haul all Class I wastes to Pad 3 for disposal. Variance Request: To avoid the risk of plugging the flow line with large rocks and wood encountered while drilling V surface hole, it is requested to drill without a flow paddle for the first portion of the surface hole. After drilling past the larger rocks and wood sections, the flow paddle will be put back in the flow line. Area of Review ✓ There are no wells within 1/4 of a mild Z-116i Permit Application Page 5 Z-116i Drill and Complete Procedure Summary Pre-Rig Work: 1. Inspect Cellar Box and 20" conductor 2. Weld an FMC landing ring for the FMC Gen 5 wellhead on the conductor. 3. If necessary, level the pad and prepare location for rig move. Shut in nearby wells, bleed off process • lines, and remove well houses as necessary. Rig Operations: 1. MIRU. Nipple up diverter spool and function test diverter. ' 2. Prepare pits with Drillplex Mud and PU DP as required and stand back in derrick. ' 3. MU 16" drilling assembly with MWD/GR/Res and directionally drill surface hole to TD in the SV3. If . needed, perform wiper trip at the base of permafrost. CBU and condition hole as necessary, then POOH for casing. 4. Run and cement 13-3/8" surface casing. A TAM port collar may be run at 500' as a contingency. 5. ND diverter and NU casing / tubing head. NU BOPE and test to 4000psi. Give the AOGCC 24 hrs notice prior to testing. 6. Make up 12-1/4" drilling BHA with MWD/GR/RES and RIH to float collar. Pressure test 13-3/8" casing to 3500 psi for 30 minutes. Drill out shoe track and displace well to LSND drilling fluid. Drill 20' of new formation and perform LOT. 7. Directionally drill remainder of surface hole to TD in the UG4A. If needed, perform wiper trip to previous casing shoe. CBU and condition hole as necessary, then POH for liner. 8. Change out VBRs for 9-5/8" casing rams and test. 9. Run and cement the 9-5/8", 40.0 lb/ft L-80 drilling liner with 150' overlap into the 13-3/8". Displace cement with mud and set hanger/ liner top packer. POOH 10. Change out casing rams for VBRs and test. .��,/ 11. Perform Negative pressure test on the 9-5/8" liner. 1' I e-as 12. Make up 8'3/4" drilling BHA with MWD/GR/RES/AZI-DEN/NEU/PWD and RIH to float collar. Pressure test 9-5/8" liner x 13-3/8" casing to 3500 psi for 30 minutes. Drill out shoe track and condition LSND drilling fluid. Drill 20' of new formation and perform LOT. 13. Drill to ± 200' above the HRZ, ensure mud is conditioned and properly weighted (10.6 ppg) for shale stability, and perform short trip as needed. Ensure pre-reservoir meeting is held highlighting kick tolerance and detection prior to�Qjntlrin tle HRZ. s �� 14. Drill ahead to target TD; ((e�owF'.1•(op T LV). Circulate and condition fluid. Back-ream/MAD Pass as required, then POH to run casing. 15. Change VBRs to 7" rams and test prior to running casing. 16. Run 7" intermediate casing and cement. Displace with Rheliant drilling fluid. Bring TOC to -1000' -t= •I below the surface casing shoe. Bump plug and ensure that float holds. Pressure test casing to 4000 psi for 30 minutes. 17. Change 7" casing rams to VBRs and test. 18. MU and RIH w/ 7" Whipstock as5gmbly. Hang 4.5" space-out tubing below whipstock and set whipstock such that window top is at the top of the Kuparuk C4. 19. Mill Window and drill 20' of new formation. Perform FIT test. POOH and LD milling assembly. 20. MU 6-W build section BHA. RIH and build to horizontal. Once sufficiently past Fault 4 POOH. 21. MU 6-W RSS drilling assembly with MWD/GR/RES/Azi-Den/Neu/Density Caliper Periscope package 22. Drill ahead in Kuparuk C sands to TD. Circulate and condition mud. MAD-Pass / Backream as , required and POOH lying in an OBM pill for the 4-1/2" liner run. Lay down excess DP as necessary. 23. MU and RIH the 4-1/2" solid liner with swell p kers and sliding sleeves. There will be 150' of overlap into the 7" intermediate casing. 24. Set liner hanger and liner top packer as per BOT Rep and test LTP to 4000 psi for 30 minutes. Release from liner and displace well to brine. POOH and LD Drill Pipe. 25. RU E-Line and run GR/JB, then USIT from PBTD to surface.►� 26. Run 4-1/2" L-80 completion w/3 GLM and land tubing hanger. RILDS. Z-116i Permit Application Page 6 27. Drop RHC ball and rod on rollers and set packer as per Halliburton recommendation and test tubing to 4000 psi and annulus to 4000 psi. Shear the DCR-1 valve and pump both ways to confirm circulation ability. 28. Install and test TWC. Nipple down the BOPE. Nipple up and test double master valves to 5000 psi. RU DSM and pull TWC. 29. Freeze protect the well to 2200' TVD by first pumping corrosion inhibited brine down the IA with rig pumps followed by diesel down IA w/ Hot Oil truck, taking clean brine returns to surface. Allow diesel to u-tube into tubing. 30. Install BPV in tubing hanger. Install all annulus valves and secure the well. Ensure that T/IA/OA are protected with two barriers. RDMO. Post-Rig Work: 1. Pull BPV. R/U Slickline and pull ball and rod / RHC. 2. Replace the DCK shear valve with a dummy GLV. 3. Pull dummy valves and replace with gas lift valves. Pull VR Plugs. 4. Install wellhouses and flowlines. 5. Pump RG2401 (Blue-Goo) on top of surface casing cement. 6. Shift sliding sleeves 7. Flow back to test separator Z-116i Permit Application Page 7 Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE I. Well Control/ Reservoir Pressures: A. The Schrader Bluff reservoir is most likely pressured at an 8.7 ppg EMW. The Lower Brookian (TLBK) had to be drilled with a 10.7 ppg due to over pressure on Z-08, but most likely pore pressure is 9.4 ppg EMW starting at the CM1. The Kuparuk sands may be pressured as high as 10.4 ppg EMW, but most likely pressured at a 9.6 ppg EMW. II. Hydrates and Shallow gas: A. Free gas and/or gas hydrates may be present in the SV and Ugnu intervals while drilling the 12.25" hole below the Permafrost base. Use standard operating procedures for hydrates, if encountered. III. Running Gravels: A. Unconsolidated sand, gravel, & cobbles and thawing permafrost could impede well angle build and casing running through permafrost. Hazards include wood and cobbles, running gravels, lost circulation, and tight hole problems while drilling and running casing. IV. Faults Throw Formation Where Encounter Fault MD Intersect interDsect Est.Throw Direction Uncertainty Fault#1 -Highland State Fault SV4 2260+/-100' -1700 150ft+/-30' down to W +/-100'M.D Fault#2-Z-Pad N/S Fault into UG3 6160+/-100' -3375 160ft+/-30' down to W +/-100'M.D Fault#3-UB_Mb2 8750+/-100' -4320 30ft+/-10 down to E +/-100'M.D Fault#4-Horizontal section 13800+/-400' -6700 40ft+/-10' down to W +/-300'M.D Fault#5-Horizontal section 16350+/-250' -6700 40ft+/-10' down to W +/-250'M.D V. Lost Circulation / Breathing: A. Fault#1 - Highland state fault is crossing in the UG1. Losses are not considered to be encountered at the highland fault. Fault#2 is the Z-pad fault that is clearly seen in the seismic. Previous wells that have crossed this fault have not had major losses. Fault#3 is considered the largest risk of lost circulation due to potentially crossing it at its tip out point. It could be a fracture zone instead of a true crossing. Fault#4 and#5 are both in the horizontal section and have the most uncertainty around due to the shallow dip angle seen across them and the angle which the wellplan is crossing them. B. Breathing in the Colville has occurred on other pads in the past, but is not considered a major risk for Z-pad. Maintain ECD hardlines and good tripping practices to minimize risk of breaking down the formations. VII. Heavy Oil A. Heavy oil is expected in the UG4A through UG_Mc intervals which could result in plugging of shaker screens. Follow established operating practices for drilling in heavy oil zones. VIII. Broaching A. Monitor adjacent wells for broaching while drilling surface hole IX. Hydrogen Sulfide A. All Z Pad gas lift wells are expected to have H2S levels in the 20 to 120 ppm range; result of PBU gas lift gas. This site should be treated as an H2S site with all the required precautions. Well Name H2S Level Reading Date Parent Well(if sidetrack) f #1 Closest SHL Well H2S Level Z-27 18 8/10/2010 #2 Closest SHL Well H2S Level Z-29 18 5/27/2009 Z-116i Permit Application Page 8 #1 Closest BHL Well H2S Level Z-100 118 6/12/2010 #2 Closest BHL Well H2S Level V-122 16 7/6/2010 Max. Recorded H2S on Pad/Facility Z-100 120 2/7/2010 Other Relevant H2S Data (H2S alarms from rigs,etc.) CONSULT THE Z PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION Z-116i Permit Application Page 9 TREE= • CNV SAFEYOTES: WELLHEAD= FMC Z-116 i ACTUATOR= AXELSON KB.ELEV= BF. ELEV= I II KOP= ' I 2000' —4.5" HES X Nipple, ID=3.813" Max Angle= Datum MD= Datum TVD 13-3/8"CSG,68#, L-80,BTC —{ SV3 1-4413 ID=12.415" GAS LIFT MANDRELS ST MD ND DEV TYPE VLV LATCH PORT DATE 9-5/8"LNR,40#, L-80,BTC ID=8.835"--I UG4A 3 2 I UI 1 Minimum ID = 3.725" @ 13,200' c„.„ ve0 4-1/2" HES XN Nipple TD 4-1/2"L-80 EA SMELL SWELL PACKERS No# Type Top Depth Length DATE • 3 O ✓ 2 0 F 1 0 1 4-1/2"L-80 HES SLIDING SLEEVES ID= 3.813" 4.5"X Nipple,ID=3.813" 12290' T'x 4.5"HES TNT Packer,ID=3.856" — 12320' R SIZE NO# Top Depth ID DATE 4.5"X Nipple,ID=3.813" — 12350' 4-1/2" 3 3.812 4.5"X Nipple,ID=3.813" — 12420' ' 4-1/2" 2 3.812 4-1/2" 1 3.812 4.5"TBG,12.6#,L-80 ID=3.958" —I —12,429' . 1 7"x 5"Hanger/LTP,ID=4.29" — —12,430' IEI 7"Bottom-trip Whipstock H —12,581' I ,� n n =nn nn -5�� n❑ ❑❑ n 7"CSG,26#,L-80,Vam-HC,ID=6.151" —I —12,853' D --Tr ❑❑ LI❑ --13---E• LI Ll LI LI =---= 000 004 4-1/2", LNR,12.6#,L-80,ID=3.958" H 17,616' DATE REV BY COMMENTS . DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/27/11 CRR ORIGINAL COMPLETION WELL: Z-116 PERMIT No: API No: BP Exploration(Alaska) . 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O 4 •!••1•••1 4•••} 1 44...4 I. INI••N-4.441.141 4 0 1 1 1 1 1 1 I I 11 1 1 1111 111 i 111111 1 i 1 1 1 1 1 1 1 11 1 1 Illi NI 1 111111 1 1 i 1 1 I I .. 1 i i i I 1111 Iii I 111 111 I O O O O O O O O O N 7 co co N c+) V (4)00Z =aieoS a/U_ by Schlumberger WELL Z-116PB1 (P13) FIELD Prudhoe Bay Unit-WOA STRUCTURE Z-PAD Magnetic Palametera Sudan*Location NAD27 Alaska Slate Plana,Zane 04.US Feet Miscellaneous Model: BGGM 2011 Dip: 80.954' Data: October 20,2011 Let N 701754.280 Nol8e.q. 5454380.13805 Grtl Cony:0.75605707 SOP Z.111 ND RN: Rotary Table(07188 above MSL) Mag Dec: 21102' FS'. 57849.5nT Lon: W149 11 48 978 Pasting: 599102.52805 Scab Fed'.0.99891117 Plan: 2-116PB1(P13) 5,Data:July 13,2011 0 1200 2400 3600 4800 6000 Z- 95%Confidence Z-116P81(P13) 7200 7200 Z-116PB1 Tgt TQ End Cry 7"csg cry 4/1op nd Cry 6000 0 6000 /l L.116 Tgt Schrdr • A 4800 4800 Cry 4/100 A Z Fault 3 O '-116 Flt 23375 ss 0 N _ Z-116 Ffi 3 4320 ss 3600 3600 II 9-518"Cs. N End Bld U Cri 21100 (/) • /A to V V V 2400 2400 13-318"CS. 1200 •'End Bid d ¢ 1200 Foul,1 Cry 3.751100 Z-.16 Flt 1 1700 ss 0 ' LId37'51100 0 Bld 2.25/100 KOP Bld 1/100 RTE 0 1200 2400 3600 4800 6000 «< W Scale=1(in):1200(ft) E >>> -- o _o 0 0 r-- CO > g In + _ n m a co—(0 - T ,—m_• NcoNa N7 - a) m Dec- - o OaYNit —o L - '- Dr"' C C C aca_aEL:if_ - �� �, � _8 L = a) a ai a 0 C N —O .. O p N 0. N - O L 0 Q / 0 N • —p 3 6 41 �` 2 \ —O p ......` p • - M NO 0_ h- o N_ N N N N —O O O 0n 0,1 N N NN 0 —0 0 , . \\ ! . J f O —o / K O —0 -8 1 N o I c .. N CO N N p O O O RN O c'.4 N tv N N �. ri 1 1 I I 1 , I I 1 I l 1 l 1 I I I , I ! , l l I 1 lill f Till T l I 1 I I , I j 1 « I i I I 1 1 1 1 1 t 1 1 , I 1 I I 1 1 1 1 1 1 1 , l 0 0 1.0 0 0 u) ,A 0 ul 0 0 0 ,n 0 n n 0 0 0 0 v C :h cl N N (uvil pi.)uoileJedag ai uao 02 ailuao BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan Kup Z-116(27+15)v6 Project: Prudhoe Bay TVD Reference: Z-116 Plan current @ 87.80ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Plan current @ 87.80ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Plan Kup Z-116(27+15)v6 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan Z-116PB1 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#13 Z-116PB1 Offset TVD Reference: Offset Datum Reference Plan#13 Z-116PB1 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer( Interpolation Method: MD Interval 5.00ft Error Model: ISCWSA Depth Range: Unlimited Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,481.96ft Error Surface: Elliptical Conic Survey Tool Program Date 7/13/2011 From To (ft) (ft) Survey(Wellbore) Tool Name Description 34.30 900.00 Plan#13 Z-116PB1 (Plan Z-116PB1) GYD-GC-SS Gyrodata gyro single shots 900.00 2,400.00 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD MWD-Standard 900.00 3,441.95 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD+IFR+MS MWD+IFR+Multi Station 3,441.95 4,950.00 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD MWD-Standard 3,441.95 6,106.68 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD+IFR+MS MWD+IFR+Multi Station 6,106.68 7,500.00 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD MWD-Standard 6,106.68 12,853.94 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD+IFR+MS MWD+IFR+Multi Station 7/13/2011 1:36:53PM Page 2 of 4 COMPASS 2003.16 Build 73 BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan Kup Z-116(27+15)v6 Project: Prudhoe Bay ND Reference: Z-116 Plan current @ 87.80ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Plan current @ 87.80ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Plan Kup Z-116(27+15)v6 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan Z-116PB1 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#13 Z-116PB1 Offset TVD Reference: Offset Datum 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 Z Pad Plan lvi Z-61 (NF)v6-Plan Z-61 -Plan#4 Z-61 vE 2,743.07 2,780.00 457.72 64.78 409.19 Pass-Major Risk Plan Kup Z-111 (29.5)v6-Plan Z-111-Plan#10 478.56 475.00 103.64 8.93 94.71 Pass-Major Risk Plan Kup Z-113(NH)v6-Plan Z-113-Plan#7 Z- 4,080.71 3,820.00 268.48 115.95 187.08 Pass-Major Risk Plan Kup Z-113(NH)v6-Plan Z-113PB1 -Plan# 4,080.71 3,820.00 268.48 115.95 187.08 Pass-Major Risk Plan Kup Z-114(27+45)v6-Plan Z-114-Plan#1 523.43 525.00 27.15 9.98 17.21 Pass-Major Risk Plan Kup Z-115(NG)v6-Plan Z-115 wo/PH-Pla 3,643.64 3,420.00 173.23 100.73 100.07 Pass-Major Risk Plan Kup Z-118(30.5)v5-Plan Z-118 v5-Plan#: 527.14 525.00 139.09 9.95 129.14 Pass-Major Risk Plan Sch Z-202(NB)v6-Plan Z-202-Plan#2 Z 1,953.19 2,030.00 79.36 54.63 36.03 Pass-Major Risk Plan Sch Z-203(SO)v6-Plan Z-203-Plan#3 Z-: 9,658.94 12,947.80 224.51 425.39 12.20 Pass-Major Risk Plan Sch Z-213(NL)v6-Plan Z-213-Plan#3 Z-2 5,983.59 5,505.00 187.17 162.83 65.04 Pass-Major Risk Plan Sch Z-216(NI)v6-Plan Z-216-Plan#2 Z-2 4,212.78 3,730.00 486.36 133.16 402.68 Pass-Major Risk Plan Sch Z-217(NN)v6-Plan Z-217-Plan#3 Z-: 9,235.52 8,605.00 637.66 260.11 480.25 Pass-Major Risk Plan Sch Z-218(NE)v6-Plan Z-218-Plan#2 Z 2,297.96 2,290.00 252.82 71.07 194.05 Pass-Major Risk Plan Z-400(21-35)-Plan Z-400-Plan#4 646.37 640.00 188.45 12.03 176.48 Pass-Major Risk Plan Z-402(21-70)-Plan Z-402-Plan#4 1,345.13 1,340.00 26.66 27.80 2.14 Pass-Major Risk Z-101-Z-101-Z-101 1,847.48 1,870.00 107.28 56.64 67.82 Pass-Major Risk Z-102-Z-102-Z-102 376.25 370.00 31.35 8.04 23.31 Pass-Major Risk Z-102-Z-102PB1 -Z-102PB1 376.25 370.00 31.35 8.04 23.31 Pass-Major Risk Z-103-Z-103-Z-103 445.40 440.00 48.73 7.58 41.16 Pass-Major Risk Z-103-Z-103PB1 -Z-103PB1 445.40 440.00 48.73 7.74 41.00 Pass-Major Risk Z-103-Z-103PB2-Z-103PB2 445.40 440.00 48.73 7.74 41.00 Pass-Major Risk Z-103_DIMS-Z-103-Z-103 87.80 87.80 45.49 1.88 43.61 Pass-Major Risk Z-21--Z-21-Z-21 966.15 965.00 213.85 17.98 195.86 Pass-Major Risk Z-21-Z-21A-Z-21A 967.76 960.00 213.87 18.01 195.86 Pass-Major Risk Z-210-Z-210-Z-210 1,138.18 1,145.00 47.54 20.52 28.43 Pass-Major Risk Z-210-Z-21 OPB1 -Z-210PB1 1,138.18 1,145.00 47.54 20.52 28.43 Pass-Major Risk Z-210_DIMS-Z-210-Z-210 87.80 87.80 67.52 1.88 65.64 Pass-Major Risk Z-210 DIMS-Z-21 OPB1-Z-210 PB1 87.80 87.80 67.52 1.88 65.64 Pass-Major Risk Z-22--Z-22-Z-22 1,346.30 1,370.00 222.38 31.13 192.35 Pass-Major Risk Z-22A-Z-22A-Z-22A 1,346.61 1,370.00 222.70 31.14 192.65 Pass-Major Risk Z-22B-Z-22B-Z-22B 1,346.61 1,370.00 222.70 31.14 192.65 Pass-Major Risk Z-23-Z-23-Z-23 1,024.01 1,020.00 280.20 20.03 260.17 Pass-Major Risk Z-23-Z-23A-Z-23A 1,029.45 1,015.00 280.78 17.65 263.13 Pass-Major Risk Z-23-Z-23B-Z-23B 1,032.71 1,020.00 280.84 17.71 263.13 Pass-Major Risk Z-27-Z-27-Z-27 390.91 395.00 15.66 7.69 7.97 Pass-Major Risk Z-28-Z-28-Z-28 455.39 460.00 50.93 9.35 41.58 Pass-Major Risk Z-29-Z-29-Z-29 395.24 400.00 84.23 7.12 77.11 Pass-Major Risk Z-30-Z-30-Z-30 457.47 460.00 120.54 7.94 112.60 Pass-Major Risk Z-30-Z-30A-Z-30A 456.62 450.00 120.53 7.93 112.60 Pass-Major Risk Z-30_DIMS-Z-30-Z-30 87.80 87.80 119.51 1.88 117.64 Pass-Major Risk Z-30_DIMS-Z-30A-Z-30A 87.80 87.80 119.51 1.88 117.64 Pass-Major Risk Z-31-Z-31-Z-31 505.72 505.00 156.08 9.66 146.42 Pass-Major Risk Z-31 DIMS-Z-31 -Z-31 87.80 87.80 154.52 1.88 152.64 Pass-Major Risk Z-32-Z-32-Z-32 468.17 475.00 189.99 9.01 180.98 Pass-Major Risk Z-32A-Z-32A-Z-32A 471.52 475.00 190.05 9.07 180.98 Pass-Major Risk Z-32B-Z-32B-Z-32B 471.52 475.00 190.05 9.07 180.98 Pass-Major Risk Z-32BL1 -Z-32BL1 -Z-32BL1 471.52 475.00 190.05 9.07 180.98 Pass-Major Risk Z-32BPB1-Z-32BPB1 -Z-32BPB1 471.52 475.00 190.05 9.07 180.98 Pass-Major Risk Z-32BPB2-Z-32BPB2-Z-32BPB2 471.52 475.00 190.05 9.07 180.98 Pass-Major Risk Z-33-Z-33-Z-33 364.70 370.00 224.84 8.32 216.52 Pass-Major Risk Z-33-Z-33A-Z-33A 364.70 370.00 224.84 8.32 216.52 Pass-Major Risk 7/13/2011 1:36:53PM Page 3 of 4 COMPASS 2003.16 Build 73 Project: Prudhoe Bay Site: PB Z Pad Well: Plan Kup Z-116 (27+15)%6 Wellbore: Plan Z-116PB1 From Colour To MD Design: Plan #13 Z-116PB1 34 500 500 1000 1000 1500 From Surface to 1500'md 1500 2000 Scan interval 100 ft Scale 1 : 50 2000 3000 All wells pass major risk o 3000 5000 5000 10000 175 10000 15000 - 30 330 �t 5l! 300 60 i---- -51 .841188 100.1... 2 '0 ,10P� 0 u air • ; •� '� t"::( ,:i. 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Ci I& ; § " mo Nt 0 \5� ° \ , ° - f NI 31, \ „ z. !§ 2 k 4.0 \ � iii \ m !! co co co ° 8 \ CD !! « « m 2 II 3 ) a E. ],, _ §44 S. ] % U \ a |_,-. 0 E A / . § E O 1 {\ CD } 0__ ii 6] a ; | Z \ / U00$a01.=91nSOA1 • by 0 Schlumberger WELL Z-116 (P16) FIELD STRUCTURE Prudhoe Bay Unit-WOA Z-PAD Mapnec Parameters Surface Locaeon .1327 Massa State Plane,Zan 04,US Fwt MbcNleneeus Ala: BGGM 2011 DP'. 80.655' Deb: Mown.02.2011 LII II 701754.280 Nonfarm. 5959380.13 PUS G74 Con,0799357o Sot Z-111 ND Rel: Rotary Tatee187.ER above MSI) Mag Dec 21.062• FS 57649.307 Lon: W 14911 48 978 Easbnp 599162 52 RUS Scale Fac:0.99991117 Plan: Z-118(P16) Srry Date:Jury 13,2011 1800 2400 3000 3600 4200 4800 5400 11400 •••• o •• 11400 i ® 2-118(P16) j 7-118 Pk 5 8700 t% A B' T 10800 -- 10800 TD End Cry *4 * End Cry Z-116 Tgt7 10200 •••- r-111311t46700'6k 10200 ® Z-116 Tgt 6 CA/4/100 ' cralo0 1111111°11 End Cry A A 9600 Z-116 To S 9600 , Z Cry aloo 0 0 co E B 9000 , J 9000 a1 �® To End Cry U fA Z-116 Tgt 4 II (q cry 4/100 V V v 8400 - 8400 End Cry ` Z-116 Tgt 3 ` cry 4/100 \ilk End Cry 7800 •••- 7800 cry 4/100 \I'll\ 7200 -116? 1'P137200 7"Csg End Cry.. Cry 22/100 Base Whipstock Top Whipstock • 116PB1(P13) 1800 2400 3000 3600 4200 4800 5400 «< W Scale=1(in):600(ft) E >>> O• O — V 0 0 -N v O O v - O —g R co - 0 0 — L•) - f— N - 8 co co —m - m N(ON 2 CL Nit N a c c c ?m ca cam aaaaa - - 0 . ai- • c —0 • o ( Q. 0.)o - - •- 0 - o N_ - O L - a r - Q - 0 N 0 --- � m - a) 2 0 O —N - S - 0 0 _pp L O O Te- 8 3 O .9 _ aOp r��t c 8 O W. o - O 0 N 0 O 3 I 1 I 1 1 I I t 13 1 1 I 13 t ) I I I I l I 11 1 1 l I l I I I 13 I I ( 1 ti 131i 113111 I N �n 0 o .n o c0 to C V M M N N (w,pi)uogeiedag anuao ai;uaj BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan Kup Z-116(27+15)v6 Project: Prudhoe Bay TVD Reference: Z-116 Plan current @ 87.80ft(Doyon 14) Reference Site: PB Z Pad MD Reference: Z-116 Plan current @ 87.80ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Plan Kup Z-116(27+15)v6 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan Z-116 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#16 Z-116 Offset TVD Reference: Offset Datum Reference Plan#16 Z-116 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer Interpolation Method: MD Interval 5.00ft Error Model: ISCWSA Depth Range: 12,581.68 to 17,616.33ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,958.20ft Error Surface: Elliptical Conic Survey Tool Program Date 7/13/2011 From To (ft) (ft) Survey(Wellbore) Tool Name Description 34.30 900.00 Plan#13 Z-116PB1 (Plan Z-116PB1) GYD-GC-SS Gyrodata gyro single shots 900.00 3,441.95 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD+IFR+MS MWD+IFR+Multi Station 3,441.95 6,106.68 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD+IFR+MS MWD+IFR+Multi Station 6,106.68 12,581.68 Plan#13 Z-116PB1 (Plan Z-116PB1) MWD+IFR+MS MWD+IFR+Multi Station 12,581.68 12,750.00 Plan#16 Z-116(Plan Z-116) INC+TREND Inclinometer+known azi trend 12,750.00 14,250.00 Plan#16 Z-116(Plan Z-116) MWD MWD-Standard 12,750.00 17,616.33 Plan#16 Z-116(Plan Z-116) 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 Z Pad Plan Ivi Z-61 (NF)v6-Plan Z-61 -Plan#4 Z-61 vE Out of range Plan Kup Z-111 (29.5)v6-Plan Z-111-Plan#10 Out of range Plan Kup Z-114(27+45)v6-Plan Z-114-Plan#1 Out of range Plan Kup Z-115(NG)v6-Plan Z-115 wo/PH-Pla 17,616.15 14,345.00 1,198.78 333.26 867.84 Pass-Major Risk Plan Kup Z-116(27+15)v6-Plan Z-116PB1 -Pla 12,700.00 12,705.00 21.37 107.21 -8.26 FAIL-Major Risk Z-101-Z-101-Z-101 Out of range Z-103 DIMS-Z-103-Z-103 Out of range Z-21-Z-21 -Z-21 Out of range Z-21-Z-21A-Z-21A Out of range Z-210_DIMS-Z-210-Z-210 Out of range Z-210 DIMS-Z-210PB1-Z-210 PB1 Out of range Z-22-Z-22-Z-22 Out of range Z-22A-Z-22A-Z-22A Out of range Z-22B-Z-22B-Z-22B Out of range Z-23-Z-23B-Z-23B Out of range Z-27-Z-27-Z-27 Out of range Z-28-Z-28-Z-28 Out of range Z-29-Z-29-Z-29 Out of range Z-30-Z-30-Z-30 Out of range Z-30-Z-30A-Z-30A Out of range Z-30_DIMS-Z-30-Z-30 Out of range Z-30_DIMS-Z-30A-Z-30A Out of range Z-31-Z-31 -Z-31 Out of range Z-31_DIMS-Z-31 -Z-31 Out of range Z-32-Z-32-Z-32 Out of range Z-32A-Z-32A-Z-32A Out of range Z-32B-Z-32B-Z-32B Out of range Z-32BL1 -Z-32BL1 -Z-32BL1 Out of range Z-32BPB1 -Z-32BPB1 -Z-32BPB1 Out of range Z-32BPB2-Z-32BPB2-Z-32BPB2 Out of range 7/13/2011 2:08:55PM Page 2 of 3 COMPASS 2003.16 Build 73 • Project: Prudhoe Bay Site: PB Z Pad Well: Plan Kup Z-116 (27+15)'6 Wellbore: Plan Z-116 Design: Plan #16 Z-116 From Colour To MD From KOP to TD 0 12580 Scan interval 100 ft Scale 1 : 50 12580 17650 All wells pass major risk 0 175 330 30 150 \- �' 12 r -- 101 300 \ 60 \ • \ \ / / /, / / %/, / � � / / i `: \t \ \ \ \\ \ \ \ \ ` '' 270 I I f l 90 I ;4 1 :95 a� 2. ao ry 12 0 N 7 JQ A- ,49800 A co 240 44- 4 ` mo120 xr Q' 1 �`O ^yam ry 40 150 210 -, 150 17 180 Travelling Cylinder Azimuth (TFO+AZI)[0]vs Centre to Centre Separation [50 ft/in] I R 0 L to O 4) > 73 > 'a N C > C 6 N • O d CI (1) Q > O a) I— U) z cO °' U o / W ca >, C >, 7 CD I To m Li --‘ ao = E CC' c L LU z° z° as - J a Riii..._ 0 ift. dia ci 0 411I Cut) 4.411111 1 • 1 41k, i In 3 1 \ I s d � Is: t/i �,,4, 0 J E EL , Ill 0 V 2 0 A 1111114 ,- _ 1 �r 1111k, all 0 yr0 14 0 ,IS ii� el\ ./ 8 1 rim • . t . . > c (013 J ft, \ . 7.1111 mI YiQie 0O >a U m m '�/ . , O m W Mill C m � O O o m a m.x a ccv C J •Lc2 a m " 2V I Q N 00 a , 2 w o m � 6 m ~ T ^ \ T 1 1 cQ M= C7 N C7 L 0 _ G .1- a) a m T ♦... 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' 5 Na tea= r on a m a W -'.'-L' 7 E o� , -.5, F 7 o i r E Page 1 of 2 Schwartz, Guy L (DOA) From: Warren,Abigail M[Abigail.Warren@bp.com] Sent: Monday, September 19, 2011 5:36 PM To: Schwartz, Guy L(DOA) Subject: RE: Z-116 (PTD 211-124) Attachments: Z-116 1320ft circles.ZIP Guy, 1)As discussed here is the plot of the wells in the area. 2) Here is the corrected cement top of the Tail. The volumes were corrected but the MD for the tail cement needs to be 500' above the shoe. Intermediate Casing: Casing Size 7" Basis: Lead: Open hole volume with 30%excess. Lead TOC: 1000' MD below drilling liner shoe. (-7106' MD) Tail: Open hole volume with 30%excess+ 80' shoe track volume Tail TOC: 12354' MD (500' MD above shoe) ' Total Cement Volume: Lead 183 bbl/ 1026 ft3/557 sks of LiteCRETE at 11 ppg and 1.84 cf/sk Tail 21 bbl/ 115 ft3/98 sks of Class`G'at 15.8 ppg and 1.17 cf/sk 3)The well is slated to be on flow back for less than a week Let me know if you have any other questions Thanks Abby From: Schwartz, Guy L(DOA) [mailto:guy.schwartz@alaska.gov] Sent: Monday, September 19, 2011 2:11 PM To: Warren, Abigail M Subject: Z-116 (PTD 211-124) Abby, I noticed a couple of things in the permit for Z-116. 1) 1 need a map view plot of the wells in the area for the AOR. 20 AAC 25.286 (c)(1) requires a plat showing well bores( plugged , active or otherwise) in the area even though you state there are no wells within %mile. 2) The cement volumes you show for the intermediate casing seem to be calculated based on a 8.5"OH instead of 8.75". 3) Is your intention to flow back the well for an extended period?? ie greater than 30 days?? Regards, 9/20/2011 Page 2 of 2 Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433(cell) 9/20/2011 �� yr� i 1 < _,-*- . 11.01.e N fy .11iiP' p41 :I? ' `," \TO / ° r.4.•o � --al dI fiS mo o to m 1 CD : -' , , AJ v' J ...ate aa5> - ^ 0C r00g� 4111W APO% � o ! * c 5. op 00 L9`��. ii __s ''k WV-A ryllib �5 0 n SGhg g �I.. „ \ b 0 _ LI a 6525 O w CI 4v\ Jerl'ati ,------- ' CD %VFW , ,.---- ., 40 ,L1-1 ' Irviii.` ' Or ' - ‘t ,,.. :::::,*-----1„.________________,.. toOL.'3 WO g 2.&/.9 :17:1111119si IV -0 p70 ...... :0\\ I5v ' In ,,,„A„. „,,,-„,>,,, 2. Q ,,...mv-, . ‘il b A 9' 4 1 - mQsSg 04: ' C Ailliiii rer .i. i.. El) ellaillikOMMIftimumA Ill C) : -,„,,„„ma, mot Fair IS ida .c4. L IPPWAII w 665 welpropredir m I oE. mialk.- O c".•• - A0 C N -a o — — p ,...... _ ..„, , im,......,_,..„ cb ,i4 2 E kik = 0,0gWI � -iti eG9 SLS111fiecn O� k1 0589SZB9 �� CD 10.00011111111110 O 1 is- ,,,„<c9 _ �L89 I 1 f Alaska Department of Natural Resources Land Administration System Page 1 of g Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources I find Alaska DNR Case Summary File Type: ADL File Number: 47450 6 Printable Case File Summary See Township,Range,Section and Acreage? Yes No I New Search I LAS Menu I e Abstract I Case Detail I Land Abstract File: ADL 47450 map Search for Status Plat Updates As of 09/15/2011 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E.BENSON BL ATTN:LAND MANAGER-ALASKA ANCHORAGE AK 995196612 Case Type:784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location:DOG DIV OIL AND GAS Case Status:35 ISSUED Status Date: 09/30/1969 Total Acres: 2469.000 Date Initiated:08/11/1969 Office of Primary Responsibility:DOG DIV OIL AND GAS Last Transaction Date: 12/28/2007 Case Subtype: NS NORTH SLOPE Last Transaction:CHNGTEXT CHANGE LEGAL TEXT Meridian: U Township: 011N Range: 012E Section: 05 Section Acres:640 Search Plats Meridian: U Township: 011N Range: 012E Section: 06 Section Acres:593 Meridian: U Township: 011N Range: 012E Section: 07 Section Acres:596 Meridian: U Township: 011N Range: 012E Section: 08 Section Acres:640 Legal Description 08-11-1969***SALE NOTICE LEGAL DESCRIPTION*** C23-035 T11N-R12E-UM GENERAL 05 640.00 ALL 06 593.00 ALL 07 596.00 ALL 08 640.00 ALL TOTAL ACRES-2469.00 ************************************************************** 04-01-1977**UNITIZED LEASE AND PARTICIPATING AREA LEGAL DESCRIPITION** LEASED COMMITTED IN ITS ENTIRETY TO THE PRUDHOE BAY UNIT AND OIL RIM AND GAS CAP PARTICIPATING AREAS PRUDHOE BAY UNIT TRACT 49 OIL RIM AND GAS CAP PARTICIPATING AREAS T. 11 N.,R. 12 E.,U.M. SECTION 5: ALL,640.00 ACRES; SECTION 6: ALL,593.00 ACRES; SECTION 7: ALL,596.00 ACRES; SECTION 8: ALL,640.00 ACRES; http://dnr.alaska.gov/projects/las/Case Summary.cfn?FileType=ADL&FileNumber 4745... 9/15/2011 Alaska Department of Natural Resources Land Administration System Page 1 ofj 'ladder Land Records/Status Plats Recorder's Search State Cabins Natural Resources ( find Alaska DNR Case Summary File Type: ADL File Number. 28262 Printable Case File Summary See Township,Range,Section and Acreage? Yes No New Search LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28262 maP Search for Status Plat Updates As of 09/15/2011 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E.BENSON BL ATTN:LAND MANAGER-ALASKA ANCHORAGE AK 995196612 Case Type:784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location:DOG DIV OIL AND GAS Case Status:35 ISSUED Status Date: 08/26/1965 Total Acres: 2480.000 Date Initiated:05/28/1965 Office of Primary Responsibility:DOG DIV OIL AND GAS Last Transaction Date:05/04/2009 Case Subtype: NS NORTH SLOPE Last Transaction:CHNGTEXT CHANGE LEGAL TEXT Meridian: U Township: 011N Range: 012E Section: 17 Section Acres:640 Search Plats Meridian: U Township: 011N Range: 012E Section: 18 Section Acres:599 Meridian: U Township: 011N Range: 012E Section: 19 Section Acres:601 Meridian: U Township: 011N Range: 012E Section: 20 Section Acres:640 Legal Description 05-28-1965***SALE NOTICE LEGAL DESCRIPTION*** C14-58 T11N,R12E,UM 17, 18, 19,20 2,480.00 12-04-1969***ASSIGNMENT LEGAL DESCRIPTION*** SEGMENT 1 T 11N,R 12E,UM SECTION 17:640 ACRES SECTION 18:599 ACRES SECTION 19:601 ACRES CONTAINING 1840 ACRES,MORE OR LESS. SEGMENT 2-LANDS ASSIGNED T 11N,R 12E,UM SECTION 20:640 ACRES CONTAINING 640 ACRES,MORE OR LESS. 04-01-1977***UNITIZED AND PA LEGAL DESCRIPTIONS*** TRACTS 54&54A COMMITTED TO THE PRUDHOE BAY UNIT AND THE OIL RIM& GAS CAP PARTICIPATING AREAS TRACT 54 T. 11 N.,R. 12 E.,U.M. http://dnr.alaska.gov/projects/las/Case Summary.cfin?FileType=ADL&FileNumber=2826... 9/15/2011 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 //( PTD# o?///0>W1 Development V Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: f' ,6.-&O/%G%�2Ay POOL: ,,z37, ;z/1.4.5 'i' Circle Appropriate Letter/ Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (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 mut be clearly differentiated in both well name ( L— 116 P ( PH) and API number (50-UZ9 - .x5`( S5 -70 ) from records, data and logs acquired for well Z /16 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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