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CAUTION: External sender. DO NOT open links or attachments from UNKNOWN senders. From:Wallace, Chris D (OGC) To:AOGCC Records (CED sponsored) Subject:FW: OPERABLE: WAG Injector S-128 (PTD #2101590) no TxIA communication Date:Monday, April 14, 2025 9:31:00 AM From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Friday, April 11, 2025 9:42 AM To: Wallace, Chris D (OGC) <chris.wallace@alaska.gov> Cc: Regg, James B (OGC) <jim.regg@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Torin Roschinger <Torin.Roschinger@hilcorp.com> Subject: OPERABLE: WAG Injector S-128 (PTD #2101590) no TxIA communication Mr. Wallace, Slickline set extended packing DGLVs on 03/10/25. Follow up monitors indicate there is no TxIA communication. The well will now be classified as OPERABLE. Please respond with any questions or concerns. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 From: Wallace, Chris D (OGC) <chris.wallace@alaska.gov> Sent: Tuesday, March 11, 2025 1:20 PM To: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Cc: jim.regg <jim.regg@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Torin Roschinger <Torin.Roschinger@hilcorp.com> Subject: [EXTERNAL] RE: Request to extend UNDER EVALUATION period for Injector S-128 (PTD #2101590) after setting extended packing DGLVs. Andy, Your request for additional 28 days for diagnostics and monitoring is approved. Thanks and Regards, Chris Wallace, Sr. Petroleum Engineer, Alaska Oil and Gas Conservation Commission, 333 West 7th Avenue, Anchorage, AK 99501, (907) 793-1250 (phone), (907) 276-7542 (fax), chris.wallace@alaska.gov CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, contains information from the Alaska Oil and Gas Conservation Commission (AOGCC), State of Alaska and is for the sole use of the intended recipient(s). It may contain confidential and/or privileged information. The unauthorized review, use or disclosure of such information may violate state or federal law. If you are an unintended recipient of this e-mail, please CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. delete it, without first saving or forwarding it, and, so that the AOGCC is aware of the mistake in sending it to you, contact Chris Wallace at 907-793-1250 or chris.wallace@alaska.gov. From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Tuesday, March 11, 2025 11:14 AM To: Wallace, Chris D (OGC) <chris.wallace@alaska.gov> Cc: Regg, James B (OGC) <jim.regg@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Torin Roschinger <Torin.Roschinger@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: Request to extend UNDER EVALUATION period for Injector S-128 (PTD #2101590) after setting extended packing DGLVs. Mr. Wallace, DHD performed a passing PPPOT-T to 5000 psi on 02/17/25 indicating the wellhead seals have integrity. On 03/10/25 Slickline pulled the DGLVs and replaced with extended packing DGLVs. We are approaching the end of the original 28-day Under Evaluation period (set to expire on 03/15). With your approval, Hilcorp would like to extend the Under Evaluation period for another 28-days to monitor the IA pressure after setting the extended packing DGLVs. Please respond at your earliest convenience. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Saturday, February 15, 2025 8:49 AM To: chris.wallace@alaska.gov Cc: jim.regg <jim.regg@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Torin Roschinger <Torin.Roschinger@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: UNDER EVALUATION: Injector S-128 (PTD #2101590) anomalous IA re-pressurization Mr. Wallace, WAG Injector S-128 (PTD #2101590) had a bleed on 01/13/25 shortly after the well was swapped to miscible gas injection. After the bleed, the IA pressure has slowly climbed and does not appear to be due to any thermal effects. The well is now classified as UNDER EVALUATION and is on the 28-day clock for diagnostics. Plan forward: 1. DHD: PPPOT-T 2. DHD: Bleed IAP, monitor for re-pressurization 3. Slickline (pending): Install extended packing DGLVs 4. Well Integrity: Additional diagnostics as needed Please respond with any questions. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of the individual or entity named above. If you are not an intended recipient or if you have received this message in error, you are hereby notified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, pleaseimmediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently deletethis message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that theonward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibilityis accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. The information contained in this email message is confidential and may be legally privileged and is intended only for the use of the individual or entity named above. If you are not an intended recipient or if you have received this message in error, you are hereby notified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, please immediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently deletethis message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that theonward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibilityis accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. W:S= m plaa Tubing —pu • &eM k OpxeNe } Nat 0', ♦ Uwer E"I an. IA —� Men. OA Men. MA ♦ Men. 000P O Man. mN CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. From:Wallace, Chris D (OGC) To:AOGCC Records (CED sponsored) Subject:FW: Request to extend UNDER EVALUATION period for Injector S-128 (PTD #2101590) after setting extended packing DGLVs. Date:Tuesday, March 11, 2025 1:21:26 PM From: Wallace, Chris D (OGC) Sent: Tuesday, March 11, 2025 1:20 PM To: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Cc: Regg, James B (OGC) <jim.regg@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Torin Roschinger <Torin.Roschinger@hilcorp.com> Subject: RE: Request to extend UNDER EVALUATION period for Injector S-128 (PTD #2101590) after setting extended packing DGLVs. Andy, Your request for additional 28 days for diagnostics and monitoring is approved. Thanks and Regards, Chris Wallace, Sr. Petroleum Engineer, Alaska Oil and Gas Conservation Commission, 333 West 7th Avenue, Anchorage, AK 99501, (907) 793-1250 (phone), (907) 276-7542 (fax), chris.wallace@alaska.gov CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, contains information from the Alaska Oil and Gas Conservation Commission (AOGCC), State of Alaska and is for the sole use of the intended recipient(s). It may contain confidential and/or privileged information. The unauthorized review, use or disclosure of such information may violate state or federal law. If you are an unintended recipient of this e-mail, please delete it, without first saving or forwarding it, and, so that the AOGCC is aware of the mistake in sending it to you, contact Chris Wallace at 907-793-1250 or chris.wallace@alaska.gov. From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Tuesday, March 11, 2025 11:14 AM To: Wallace, Chris D (OGC) <chris.wallace@alaska.gov> Cc: Regg, James B (OGC) <jim.regg@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Torin Roschinger <Torin.Roschinger@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: Request to extend UNDER EVALUATION period for Injector S-128 (PTD #2101590) after setting extended packing DGLVs. Mr. Wallace, DHD performed a passing PPPOT-T to 5000 psi on 02/17/25 indicating the wellhead seals have integrity. On 03/10/25 Slickline pulled the DGLVs and replaced with extended packing DGLVs. We are approaching the end of the original 28-day Under Evaluation period (set to expire on 03/15). With your approval, Hilcorp would like to extend the Under Evaluation period for another 28-days to monitor the IA pressure after setting the extended packing DGLVs. Please respond at your earliest convenience. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Saturday, February 15, 2025 8:49 AM To: chris.wallace@alaska.gov Cc: jim.regg <jim.regg@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Torin Roschinger <Torin.Roschinger@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: UNDER EVALUATION: Injector S-128 (PTD #2101590) anomalous IA re-pressurization Mr. Wallace, WAG Injector S-128 (PTD #2101590) had a bleed on 01/13/25 shortly after the well was swapped to miscible gas injection. After the bleed, the IA pressure has slowly climbed and does not appear to be due to any thermal effects. The well is now classified as UNDER EVALUATION and is on the 28-day clock for diagnostics. Plan forward: 1. DHD: PPPOT-T 2. DHD: Bleed IAP, monitor for re-pressurization 3. Slickline (pending): Install extended packing DGLVs 4. Well Integrity: Additional diagnostics as needed Please respond with any questions. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of theindividual or entity named above. If you are not an intended recipient or if you have received this message in error, you are herebynotified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, pleaseimmediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently deletethis message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. From:Wallace, Chris D (OGC) To:AOGCC Records (CED sponsored) Subject:FW: UNDER EVALUATION: Injector S-128 (PTD #2101590) anomalous IA re-pressurization Date:Tuesday, February 18, 2025 8:40:09 AM Attachments:S-128.pdf From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Saturday, February 15, 2025 8:49 AM To: Wallace, Chris D (OGC) <chris.wallace@alaska.gov> Cc: Regg, James B (OGC) <jim.regg@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Torin Roschinger <Torin.Roschinger@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: UNDER EVALUATION: Injector S-128 (PTD #2101590) anomalous IA re-pressurization Mr. Wallace, WAG Injector S-128 (PTD #2101590) had a bleed on 01/13/25 shortly after the well was swapped to miscible gas injection. After the bleed, the IA pressure has slowly climbed and does not appear to be due to any thermal effects. The well is now classified as UNDER EVALUATION and is on the 28-day clock for diagnostics. Plan forward: 1. DHD: PPPOT-T 2. DHD: Bleed IAP, monitor for re-pressurization 3. Slickline (pending): Install extended packing DGLVs 4. Well Integrity: Additional diagnostics as needed Please respond with any questions. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of theindividual or entity named above. If you are not an intended recipient or if you have received this message in error, you are herebynotified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, pleaseimmediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently deletethis message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the wesm wwa �roaoe —o� • a e + xwoo.r ♦ ua. ew �a..0 an. ow � ate. coon z00 nwo m m m xm m m aaoo vo m ]m im xmo .so 3 znoo w zam ]m isoo no m m ]® m a � m ]o 1]nYN Iamb nItlM RWN WYb qm'R] �M14 N4N5 .nOm O�n]/6 O�QY6 M9V6 9N>lb OtnaRS TREE= aw WE-LHEAD= FMC ACTUATOR= LBD (ME-60) OKB. ELEV = 66.66' BF. E_EV = 38.0' KOP= 500' Max Angle = 98" @ 12561' DOatumMD= 9009, DaumTVD= 6700.SS 20" INSULATED - 112' ODNDl1CTOR H-40, 91.5#, D= 19.124" 9-5/8" CSG, 40#, L-80 BTC, D = 8.835" 3772' 7" LNR 26#, L-80 TCII XO TO L-80 BTC-M 620T Minimum ID = 3.813" @ 2101' 4-1/2" HES NIPPLE 4-1/7 TBG, 12.6#, L-80 TCH, I- 8969" 01521 LNR 26#, L-80 BTC-M, 9116. 183 bpf, ID = 6.276" PERFORATION SLINMARY REF LOG: LWD ANGLEATTOPPERR Note: Infer to RYoduction DB for historical pert data NOTE LINER IS UNCEN1 ENT® S-128 SAFETY NOTES: WELL ANGLE 70" > @ 9176'. 2101' H4-12"HESXNP,ID=3.813" GAS LIFT MANDRELS ST MD TVD DEV TYPE I VLV LATCH PORT DATE 3 4177 3495 46 KBG2 DMY BK 0 09/15/12 2 6769 5304 44 KBG2 DMY BK 0 �09/15/12 1 8732 6629 59 KBG2 DMY BK 0 01/03/11 8853' H 4-12" HES X W, ID = 3.813" �— 7" X 4-1/2" t$ TNT PKR D = 3.856" MT H4-1Y2"HESXNIP,ID=3.813" 8963' 7" X 5" BKR HRD ZXP 896W 4-12" WLEG, D = 3.958" 898W 7" X 5" BKR FLEX LOCK LNR HGR ID = 4.370" BMW 5" X 4-12" XO, ID= 3.94" DKR CMD SLIDING SLEEVE. ID=3.813" BX PROFILE PBTD 12551' LNR 126#, L-80 BT-M, .0152 bpf, ID = 3.958" 125! SIZE NO# TOP DEPTH O NS z DATE 4-12" 6 9272 C 12/1723 4-12" 5 9891 C 1211723 4-12" 4 10465 C 1211723 4-12" 3 11548 0 0620/14 4-12" 2 12043 0 0620/14 4-12" 1 12412 0 0620/14 31' ELEIE4T OIU WATER SWELL PACKER ASSEMBLY NO SIZE TOP DEPTH MN D 7 4-12" 9411 3.958" 6 4-12" 9540 3.958" 5 4-12" 10731 3.958" 4 4-12" 10803 3.958" 3 4-12" 11190 3.958" 2 4-12" 11234 3.958" 1 4-12" 11813 3.958" 12535' 4-112" CBI (04101/11) PRUDHOEBAYUNIT WELL: S-128 PERMIT No:RL101590 API No: 50-029-23436-00 SEC 35, TI2N, R12E, 204W FNL & 716' FWL DATE REV BY COMMENTS DATE REV BY COMMENTS 01104M1 WES ORIGINAL COMPLETION 0929M6 EZ/JMD REMOVED OBM SWELL PKR NO 05/08/12 RMH/JMD SET BP 04/30/12 122923 LNR/JMD CLOSED SLIDING SLEEVES 05/08/12 RRW/JMD OPENSS,PULLBP OSI04/12 09/18/12 WRR/JMD GLV C/O (09/15112) 1106/12 TTW/JMD CLOSE SLD SLVs 11/19/12 Hilwrp North Slope, LLC 07MV14 CJS/JMD OPEN SLD SLVS (0620/14) Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 1400 Anchorage, AK 99503 Phone: (907) 564-4891 02/09/2024 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 02/09/2024. 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 02/09/2024. 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 Digitally signed by Oliver Sternicki DN: cn=Oliver Sternicki, c=US, o=Hilcorp North Slope LLC, ou=PBU, email=oliver.sternicki@hilcorp.com Date: 2024.02.09 11:15:58 -09'00' Oliver Sternicki Hilcorp North Slope LLC. Surface Casing by Conductor Annulus Cement, Corrosion Inhibitor Top-off Report of Sundry Operations (10-404) 02/09/2024 Well Name PTD # 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 date L-293 223020 500292374900 30 8/29/2023 S-09A 214097 500292077101 2 9/19/2023 S-102A 223058 500292297201 2 9/19/2023 S-105A 219032 500292297701 10 9/19/2023 S-109 202245 500292313500 7 9/19/2023 S-110B 213198 500292303002 35 9/19/2023 S-113B 202143 500292309402 10 9/19/2023 S-115 202230 500292313000 4 9/19/2023 S-116A 213139 500292318301 4 9/19/2023 S-117 203012 500292313700 3 9/19/2023 S-118 203200 500292318800 9 9/19/2023 S-122 205081 500292326500 5 9/19/2023 S-125 207083 500292336100 2 9/19/2023 S-126 207097 500292336300 3 9/19/2023 S-134 209083 500292341300 35 9/19/2023 S-200A 217125 500292284601 7 9/19/2023 S-202 219120 500292364700 13 9/19/2023 S-210 219057 500292363000 10 9/19/2023 S-213A 204213 500292299301 4 9/19/2023 S-215 202154 500292310700 3 9/19/2023 S-216 200197 500292298900 4 9/19/2023 S-41A 210101 500292264501 3 9/19/2023 W-16A 203100 500292204501 2 9/23/2023 W-17A 205122 500292185601 3 9/23/2023 Well Name PTD #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 date W-19B 210065 500292200602 8 9/23/2023 W-21A 201111 500292192901 8 9/23/2023 W-32A 202209 500292197001 4 9/23/2023 W-201 201051 500292300700 44 9/23/2023 W-202 210133 500292343400 6 9/23/2023 W-204 206158 500292333300 3 9/23/2023 W-205 203116 500292316500 3 9/23/2023 W-207 203049 500292314500 3 9/23/2023 W-211 202075 500292308000 8 9/23/2023 W-213 207051 500292335400 3 9/23/2023 W-214 207142 500292337300 10 9/23/2023 W-215 203131 500292317200 2 9/23/2023 W-223 211006 500292344000 7 9/23/2023 Z-69 212076 500292347100 2.0 27 1.5 10/24/2023 S-128 210159 500292343600 11 12/27/2023 S-135 213202 500292350800 16 12/27/2023 V-113 202216 500292312500 24 12/31/2023 V-114A 203185 500292317801 5 12/31/2023 V-122 206147 500292332800 5 12/31/2023 V-205 206180 500292333800 2 12/31/2023 V-207 208066 500292339000 8 12/31/2023 V-214 205134 500292327500 5 12/31/2023 V-215 207041 500292335100 2 12/31/2023 V-218 207040 500292335000 5 12/31/2023 V-224 208154 500292340000 16 12/31/2023 V-225 209118 500292341900 6 12/31/2023 V-01 204090 500292321000 3 1/1/2024 V-02 204077 500292320900 5 1/1/2024 V-04 206134 500292332200 5 1/1/2024 V-102 202033 500292307000 8 1/1/2024 V-104 202142 500292310300 5 1/1/2024 V-220 208020 500292338300 4 1/1/2024 S-128 210159 500292343600 11 12/27/2023 MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Saturday, January 25, 2025 SUBJECT:Mechanical Integrity Tests TO: FROM:Bob Noble P.I. Supervisor Petroleum Inspector NON-CONFIDENTIAL Hilcorp North Slope, LLC S-128 PRUDHOE BAY UN AURO S-128 Jim Regg InspectorSrc: Reviewed By: P.I. Suprv Comm ________ JBR 01/25/2025 S-128 50-029-23436-00-00 210-159-0 G SPT 6704 2101590 1676 3155 3150 3146 3151 58 120 116 111 4YRTST P Bob Noble 12/2/2024 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 AURO S-128 Inspection Date: Tubing OA Packer Depth 371 2496 2430 2414IA 45 Min 60 Min Rel Insp Num: Insp Num:mitRCN241202174503 BBL Pumped:3.9 BBL Returned:3.4 Saturday, January 25, 2025 Page 1 of 1 9 9 9 9 99 999 99 99 9 9 James B. Regg Digitally signed by James B. Regg Date: 2025.01.25 23:17:44 -09'00' MEMORANDUM TO: Jim Regg P.I. Supervisor I` j FROM: Bob Noble Petroleum Inspector NON -CONFIDENTIAL State of Alaska Alaska Oil and Gas Conservation Commission DATE: Monday, December 21, 2020 SUBJECT: Mechanical Integrity Tests Hilcorp North Slope, LLC S-128 PRUDHOE BAY UN AURO S-128 Src: Inspector Reviewed By: P.I. Supry -F� Comm Well Name PRUDHOE BAY UN AURO S-128 API Well Number 50-029-23436-00-00 Inspector Name: Bob Noble Permit Number: 210-159-0 Inspection Date: 12/14/2020 Insp Num' mitRCN201214144257 Rel Insp Num: Monday, December 21, 2020 Page 1 of 1 Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well S-128 'iType Inj w TVD 6704 Tubing 1 2539 2542 2539 1 2539 PTD 2101590 Type Test S Test psi 1676 IA 347 17801717 1709 BBL Pumped � 3.5 "BBL Returned: 2.9' SOA 58 74 75 74 ---- _ _ - Interval - --- --- aYRTST PIF - ✓{ -- - - --- -! - -- -- - --------- --P Notes: Monday, December 21, 2020 Page 1 of 1 Wallace, Chris D (CED) From: Alaska NS - PB - Field Well Integrity<PBFieldWelllntegrity@hilcorp.com> Sent: Saturday, December 5, 2020 5:54 AM To: Alaska NS - PB - Field Well Integrity; Wallace, Chris D (CED) Cc: Regg, James B (CED); Stan Golis; Aras Worthington; Oliver Sternicki; Travis Smith - (C) Subject: OPERABLE: Injector S-128 (PTD #2101590) Needs AOGCC MIT -IA Mr. Wallace, Injector S-128 (PTD # 2101590) Is operationally ready to be placed on injection. The well is now classified as OPERABLE. Once the well is thermally stable, an AOGCC witnessed MIT -IA will be performed. Please call with any questions or concerns. Ryan Holt Hilcorp Alaska LLC Field Well Integrity/Compliance Ryan.Holt@Hilcorp.com P: (907) 659-5102 M: (907) 232-1005 From: Alaska NS - PB - Field Well Integrity Sent: Sunday, September 20, 2020 2:38 PM To: chris.wallace@alaska.gov Cc: Regg, James B (CED) <jim.regg@alaska.gov>; Stan Golis <sgolis@hilcorp.com>; Aras Worthington <Aras.Worthington@hilcorp.com>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Travis Smith - (C) <Travis.Smith@hilcorp.com> Subject: NOT OPERABLE: Injector S-128 (PTD #2101590) Lapsed AOGCC MIT -IA Mr. Wallace, Injector S-128 (PTD # 2101590) will not be on injection for 4 year AOGCC MIT -IA due in September. The well is now classified as NOT OPERABLE for tracking purposes and will remain shut in until injection resumes. Please call with any questions or concerns. Ryan Holt Hilcorp Alaska LLC Field Well integrity/ Compliance Ryan. Holt@Hilcorp.com P: (907) 659-5102 M: (907) 232-1005 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of the individual or entity named above. If you are not an intended recipient or if you have received this message in error, you are hereby notified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, please immediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently delete this message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. Wallace, Chris D (CED) From: Alaska NS - PB - Field Well Integrity<PBFieldWellIntegrity@hilcorp.com> Sent: Sunday, September 20, 2020 2:38 PM To: Wallace, Chris D (CED) Cc: Regg, James B (CED); Stan Golis; Aras Worthington; Oliver Sternicki; Travis Smith - (C) Subject: NOT OPERABLE: Injector S-128 (PTD #2101590) Lapsed AOGCC MIT -IA Mr. Wallace, Injector S-128 (PTD # 2101590) will not be on injection for 4 year AOGCC MIT -IA due in September. The well is now classified as NOT OPERABLE for tracking purposes and will remain shut in until injection resumes. Please call with any questions or concerns. Ryan Holt Hilcorp Alaska LLC Field Well Integrity/ Compliance Ryan.Holt@Hilcorp.com P: (907) 659-5102 M: (907) 232-1005 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of the individual or entity named above. If you are not an intended recipient or if you have received this message in error, you are hereby notified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, please immediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently delete this message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. 0 • MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE: Thursday,September 29,2016 TO: Jim Regg P.I.Supervisor ' ( i(`i 3 t,,(' SUBJECT: Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC. S-128 FROM: Chuck Scheve PRUDHOE BAY UN AURO S-128 Petroleum Inspector Src: Inspector Reviewed By::�+ P.I.Supry f-/Z--I- NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UN AURO S-128 API Well Number 50-029-23436-00-00 Inspector Name: Chuck Scheve Permit Number: 210-159-0 Inspection Date: 9/27/2016 Insp Num: mitCS160927133918 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well 5-128 -Type Inj W 'TVD 6704 - Tubing 651 - 651 - 652 651 - --_- —— - 250 2795 - 2700 - 2685 PTD 2101590 'Type Test SPT Test psi! 1676 IA - Interval 4YRTST P/F P `' OA 13 - 15 - 15 16 - Notes: - - - — -- — SCANNED jUNN 0 7 201? Thursday,September 29,2016 Page 1 of 1 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMB JION REPORT OF SUNDRY WELL OPERATIONS 1 Operations Abandon ❑ Plug Perforations ❑ Fracture Stimulate ❑ Pull TubinE Operations shutdown ❑ Performed Suspend ❑ Perforate ❑ Other Stimulate ❑ Alter Casinl I I Change Approved Program ❑ Plug for Rednll n 1erforate New Pool n Repair Well [-] Re-enter Susp Well ❑ Other _Initial MI Injection_ ❑✓ 2 Operator 4 Well Class Before Work: 5 Permit to Drill Number Name BP Exploration(Alaska),Inc Development ❑ Exploratory ❑ 210-159-0 3 Address P 0 Box 196612 Stratigraphic ❑ Service Q .6 API Number Anchorage,AK 99519-6612 50-029-23436-00-00 7 Property Designation(Lease Number) 8 Well Name and Number ADL0028261 AURA S-128 9 Logs(List logs and submit electronic and printed data per 20AAC25 071). 10.Field/Pool(s) PRUDHOE BAY,AURORA OIL 11 Present Well Condition Summary. RECEIVED Total Depth measured 12616 feet Plugs measured 12535 feet tt�� 9nn true vertical 6844 3 feet Junk measured None feet JUN V 3 L 015 Effective Depth measured 12535 feet Packer measured See Attachment feet AOG CC true vertical 6855 03 feet true vertical See Attachment feet Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 82 20"91 5#H-40 30-112 30-112 1490 470 Surface 3743 9-5/8"40#L-80 29-3772 29-3212 6 5750 3090 Intermediate None None None None None None Production 9089 7"26#L-80 27-9116 27-6821.59 7240 5410 Liner 3600 4-1/2"12 6#L-80 8996-12596 6760 31 -6847 07 8430 7500 Perforation depth Measured depth 9116-9411 feet 9580-10545 feet 10545-10731 feet 11276-11813 feet 11855-12616 feet True Vertical depth 6821 59-6854 91 feet 6844 94-6790 52 feet 6790 52-6832 41 feet 6927 82-6901 71 feet 6898_36-6844 3 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12 6#L-80 24-8969 24-6746 75 Packers and SSSV(type,measured and true vertical depth) See Attachment See Attachment See Attachment Packer 4-1/2"MCX I-SSV 2101 1995 55 SSSV 12 Stimulation or cement squeeze summary Intervals treated(measured) 0 Ft Treatment descriptions including volumes used and final pressure SCANNE© LI ? 13 Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation 0 0 1116 0 1942 Subsequent to operation 0 3674 0 0 3081 14 Attachments(required per 20 AAC 25 070 25 071,&25 283) 15 Well Class after work Daily Report of Well Operations ❑ Exploratory❑ Development❑ Service Q Stratigraphic ❑ Copies of Logs and Surveys Run ❑ 16 Well Status after work Oil ❑ Gas ❑ WDSPL Li Printed and Electronic Fracture Stimulation Data ❑ GSTOR ❑ WINJ ❑ WAG ❑✓ GINJ ❑ SUSP ❑ SPLUG ❑ 17 I hereby certify that the foregoing is true and correct to the best of my knowledge Sundry Number or N/A if C 0 Exempt 1 N/A Contact Nita Summerhays Email Nita Summerhays@bp.com Printed Name Nita Summerhay / / Title Data Manager Si.:�-,..--/, i-7 --/ Phone 564-4035 Date 6/3/2015 _-C'v VT7 G/J 9//5 RBDMSJk JUN - 5 2015 /0 779/c_ Well S-128 Primary Bores: •5-128 I S-128PB1 I S-128P52 Well Type Type of Wead Injector V Date Range 1/23111 5/9/11 8/23111 12/7111.3/22/12 7/6/12 10/21/12. 2/4/13 .5/21/13 9/4/13 12/19/13. 4/4/14 7/20/14 11/3/14 2/17/15 6/3/15 l Chart 4 — a 000 MMIOMPONOMM-`-__----- p vi 1 n - ' S41 3200 , g R $ , 2400 • s; / _� 1600 `^ 0 __AL , 2/28/2015 3/15/2015 301/2015 4/15/2015 4130;2015 5/15(11115 51312015 800 —NRtP(psi) _..5W(Ws) —PVY.01/V,kW.Cf2ET(bbls) MGI(mcfd) —OAS(mcfcf) —Other -e-On-Line/Off-Line •0 S-128 05,116/2015 2,922 {0 2,594 MI S-128 05/15/2015 2,990 '0 3;000 MI 5-128 05/14/2015 2,971 0 2,960 MI 5-128 05113/2015 2,967 0 3,743 MI 5-128 05/12/2015 2,940 0 3,360 MI 5-128 05111/2015 2,8.88 0 '3,198 MI 5-128 05/10/2015 2;8110 2,860 MI 5-128 05/09/2015 2,.7740 10 2,069 MI 5-128 05./08/2015 2,815 0 2,275 MI 5-128 05'0712015 2,868 0 2,524 MI 5-128 05/06/2015 3,003 0 2,820 MI 5-128 05/05/2015 3,058 0 3,560 MI 5-128 05/04/2015 3,097 0 3,740 MI 5-128 05/03/2015 3,081 0 3,674 MI 5-128 05/02/2015 ;2,946 0 1,620 MI 5-128 05/0112015 0 0 0 PW 5-128 04130/2015 0 0 0 PW S-128104/29/2015 0 0 0 PW S-128 04/28/2015 0 0 0 PW 5-128 04/27/2015 0 0 0 PW S-128 04/26/2015 0 0 0 PW S-128 04/25/2015 0 0 0 PW 5-128 04/24/2015 0 0 0 PW 5-128 04/23/2015 0 0 0 PW Packers and SSV's Attachment ADL0028261 SW Name Type MD TVD Depscription S-128 SSSV 2101 1995.55 4-1/2" MCX I-SSV S-128 PACKER 8884 6704.47 4-1/2" HES TNT Packer S-128 PACKER 8963 6743.75 5" Baker ZXP Top Packer S-128 PACKER 9411 6854.91 4-1/2" Swell Packer Assembly S-128 PACKER 9540 6846 4-1/2" Swell Packer Assembly S-128 PACKER 10731 6832.41 4-1/2" Swell Packer Assembly S-128 PACKER 10803 6853.62 4-1/2" Swell Packer Assembly S-128 PACKER 11190 6920.38 4-1/2" Swell Packer Assembly S-128 PACKER 11234 6924.08 4-1/2" Swell Packer Assembly S-128 PACKER 11813 6901.71 4-1/2" Swell Packer Assembly TREE= CMV WELLF£AD= FMC S-1 28 SAI,.f NOTES:W ELL ANGLE 700>@ 9176'. P ACTUATOR= LEO(KE-60) OKB.ELEV= 66.66' BF.BEV= 38.0' I L1 KOP= ` ' 20"INSULA I EU H 112' 01• -4-1/2"FES X NP,D=3.813" -gm Angle= 9t3" 12561.' CONDUCTOR 1 Datum VD= 9009' H-40,91.5#, Datum TVD= 6700.SS D=19.124" GAS LIFT MANDRELS ST MD TV`) DEV TYPE VLV LATCH PORT DATE 9-5/8'CSG,40#,L-80 BTC,13=8.835" - 3772' 3 4177 3495 46 KBG2 DMY BK 0 09/15/12 -7 2 6769 5304 44 KBG2 DMY BK 0 09/15/12 1 8732 6629 59 KBG2 DMY BK 0 01/03/11 7"LNR,26#,L-80 TCI XO TO L-80 BTC-M - 6201' J---X X I , 8853' }--4-1/2"FES X MP,D=3.813" X- 8884' -7"X 4-1/T HES TNT PKR,D=3.856" Minimum ID = 3.813" a@ 2101' 1 / I 8921' -4 yrHESxN ?D=3613" 4-1/2" HES NIPPLE 8957' -4-1/2"FES XMP,D=3.813" I rte/ 8963' Hr X 5"BKR HRD ZXP LTP,13=4.380" 4-1/2"TBG, 12.6#,L-80 TCI, - 8969' 1 8969' 4-1/2"VVLF3;,D=3.958" .0152 bpf,D=3.958" 8986' -I r X 5"BKR FLEX LOCK LNR HGR,D=4.370" ` 8996' H5"X 4-1/7 XO,D=3.94" 7"LNR 26#,L-80 BTC-M, H 9116' 1----4 lk SSR CMD SUDING SLEEVE ID=3.813"BX PROFILE .0383 bpf.ID=6.276' SEE NO# TOP DEPTH Opn/Sqz DATE 4-1/2" 6 9272 0 05/04/12 4-1/2" 5 9891 0 05/04/12 4-1/2" 4 10465 0 05/04/12 4-1/2" 3 11548 0 06/20/14 4-1/2" 2 12043 0 06/20/14 PERFORATION SUMMARY 4-1/2' 1 12412 0 06/20/14 REF LOG:LAM) ANGLE AT TOP PERF: 20'OBM Swell Packers @ Note:Refer to Ptoduction DB for historical perf data 8930',9714',10659'and 12266' SIZE SPF INTERVAL Opn/Sgz DATE 41041.r ,f! on 3-1/7,92#,L-80,ID= ii 2.992" •vr Ab, 31'ELEMENT OIL/WATER NOTE LINER IS tl*ICEMB�IT D SWELL PACKER ASSEMBLY ii NO SIZE TOP DEPTH MN D ij 7 4-1/2' 9411 3.958" ii .a6 6 4-1/2" 9540 3.958" yr .f! 5 4-1/2" 10731 3.958" ii 4 4-1/2" 10803 3.9580 ii �i 3 4-1/2" 11190 3.958" 2 4-1/2" 11234 3.958" ii �' 1 4112" 11813 3.958" ! 12535' -4-1/2"CEP FEUD H 12551' /, (04/01/11) 4-l/r LNR,12.6#,L-80 BT-P4.0152 bpf,D=3.958" 12596' , DATE REV BY ODMuENTS DATE REV BYCOMMENTS PRUDHOEBAY UNIT 01/04/11 N7B5 OI GENAL COMPLETION WELL S-128 05/08/12 RMWJMD SET BP(04/30/12) PERMIT t'b: `2101590 05/08/12 RRW/JM) OR34 SS,PILL BP(05/04/12) AR Na: 50-029-23436-00 09/18/12 VVR R/JM3 GLV C/O(09/15/12) SEC 35,T12N,R12E,2049'FTL 8 716'FWL 11/26/12 TTW/JMD CLOSE SLD SLVs(11/19/12) 07/02/14 CJS/JM) OF EN SLD SLVS(06/20/14) BP Exploration(Alaska) Image Project Well History File Cover Page XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. c21 Q - i -v.J Well History File Identifier Organizing (done) ❑ Two-sided II 1111111111 II III ❑ Rescan Needed III 11111111 (11111 7RE AN DIGITAL DATA OVERSIZED (Scannable) Co •r Items: ❑ Diskettes, No. ❑ Maps: `r Greyscale Items: (Other, No/Type:CP NO' 1 ger Items Scannable by a Large Scanner 1_ ❑ Poor Quality Originals: "3 OVERSIZED (Non-Scannable) ❑ Other: ❑ Logs of various kinds: NOTES: ❑ Other:: BY: 2122W Date: /s/ f) Project Proofing II I II11II I1III 11 111 BY: MaiC... D____ Date: ` /s/ 1171 P Scanning Preparation 1+ x 30 = 1 aD + ( = TOTAL PAGES 1 014 BY: Aallb Date: (Count does not include cover sheet) /L711 � /s/ Y�/ "1 Production Scanning 1111111111110 II III Stage 1 Page Count from Scanned File: J a7 (Count does include cover sheet) Page Count Matches Number in Scanning Preparation: �ES NO BY: Maria Date: Ifili Y /s/ ! ' F P Stage 1 If NO in stage 1, page(s) discrepancies were found: YES _ NO BY: Maria Date: /s/ Scanning is complete at this point unless rescanning is required. III 1111111II II I 1111 ReScanned III IIIIII1111111111 BY: Maria Date: /s/ Comments about this file: Quality Checked 111111111III1111III o i c OW o f6 o co as 1— L a rii t1 0 O O 0 I I N N C O O a c J J co E U U 2 I in I as E U U a p 2 O — 1..-- 0 N I- '4,-S\ Z a U In u) m m In J \ E. > > o_ 0_ D 3\ o 'o J m J N d c.,7 N N N s...."\;N _m 0i Q p ce CO CO N N ` Z `- J 1- Lo C o 2 — N a) C C co= oaco e • fa C Oca ca . o. . o l Ir" toOU U O O O U 0 a) U re "-c- co (5 Q112 ! co 0. (0 CO CO CO 0 0 Oal ` Z 7 0 rn rn co co v `- ...i d al Z Z CL U ° i : : : EN0_n Za ,E to in O O O v 1 (0 N d N N V WX W Z .a N > U CO c v a Z p 7 O 2 FO- Q1-1 N CC Z o C -Cri O J c m is = O 0 coo c a E CL N cI J2 Uco 2T o Z C N N ~ o O Lf) o.. E I E. O („) In N 0 E J co i U N U ca W a- C . J U) Q CeZ O W rQ p ,I I11 H zQ 0 10 I } N M a W N W m Z C t �M/� Q D VD d i • C 1 I N a ° Lu m Q o. 21 i Q d O o �co .(a 2 2 2 .it' Z ' W W m m m W 2 c c c m o 0 0 To c c c 03 E m m c I c0 e U U 5 5 5 U m Z I a) . ' E in 1 Q J Y t,' (7) i a00 (o a0 r.:1<:.) m T m a)0 coiii E o v cm N2 O O w Ti Z N IA re a) Q d O H a_ la r a y LL �. E € y E ? � aZ Q • cG D vO c y w Z d o cp y d' Z W p C O N `n C R _ U U o a) m _ E 5 Q w \ ` \ ' " U p = - T•m E o y o w a y rn '.9 a. o O n o a 0 d o 0 t c a"i E 1 0 a i Cl 3 3o �IJ W rX IX W Q 0 QCC it U I U RECEIVED j SEP 2 5 ZO1E 2-15 1 Schiumberger AOGCC; /?$/2013 DATA LOGGED 2 `5Zc, .M K BENDER Drilling & Measurements MWD/LWD Log Product Delivery Customer BP EXPLORATION ALASKA INC Dispatched To: MAKANA BENDER Well No S-128 PB2 Date Dispatched: 24-Sep-13 Installation/Rig NABORS 7ES Dispatched By: STEFANIE CREIGHTON Data Survey No Of Prints No of CDs S-128 PB2 Log 1 1 2 in MD 1 5 in MD 1 5 in TVD 1 There is no 2 in TVD print for S-128 PB2 due to the age of the job and QC practices at the time. Received By: )4/ 6-te-7,6y( Please sign and return one copy to: D&M,2525 Gambell Street,Suite 400 Anchorage,Alaska 99503 hecheto@slb.com Hector Echeto Fax:907-561-8317 TRANSMITTAL#:6403 STATE OF ALASKA AL...,KA OIL AND GAS CONSERVATION COMMI�.,ION REPORT OF SUNDRY WELL OPERATIONS 1.Operations Abandon Li Repair Well U Plug Perforations LI Perforate U Other Ll Injection Conversion Performed: Alter Casing ❑ Pull Tubing❑ Stimulate-Frac ❑ Waiver ❑ Time Extension❑ Change Approved Program ❑ Operat.Shutdown❑ Stimulate-Other ❑ Re-enter Suspended Well❑ 2.Operator 4.Well Class Before Work: 5.Permit to Drill Number: Name: BP Exploration(Alaska),Inc Development0 Exploratory ❑ t 210-159-0 3.Address: P.O.Box 196612 Stratigraphic❑ Service ❑ 6.API Number: Anchorage,AK 99519-6612 50-029-23436-00-00 7.Property Designation(Lease Number): 8.Well Name and Number: l ADL0028261 N. ' AURA S-128 9.Logs(List logs and submit electronic and printed data per 20AAC25.071): 10.Field/Pool(s): To Be Submitted ^PRUDHOE BAY,AURORA OIL 11.Present Well Condition Summary: Total Depth measured 12616 feet Plugs measured 12535 feet R E CEIVE[ true vertical 6844.3 feet Junk measured None feet JAN 3 1 2013 Effective Depth measured 12535 feet Packer measured See Attachment feet true vertical 6855.03 feet true vertical See Attachment feet AO G CC Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 82 20"91.5#H-40 30-112 30-112 1490 470 Surface 3743 9-5/8"40#L-80 29-3772 29-3212.6 5750 3090 Intermediate None None None None None None Production 9089 7"26#L-80 27-9116 27-6821.59 7240 5410 Liner 3600 4-1/2"12.6#L-80 8996-12596 6760.31-6847.07 8430 7500 Perforation depth Measured depth1 411 feet4 7 9 16 9 95 0-10 31 feet 11276 11813 feet 11855-12547 feet 12547 12594 feet 12596-12616 feet True Vertical depth 6821.59-6854.91 feet 6846-6832.41 feet 6927.82-6901.71 feet 6898.36-6853.69 feet 6853.69-6847.34 feet 6847.07-6844.3 feet ' Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#L-80 24-8969 24-6746.75 Packers and SSSV(type,measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 952 1321 30 882 216 Subsequent to operation: 0 0 0 0 0 14.Attachments: 15.Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development❑ Service 0 Stratigraphic ❑ Daily Report of Well Operations X 16.Well Status after work: Oil U Gas ❑ WDSPLU GSTOR ❑ WINJ ❑ WAG 0 GINJ ❑ SUSP ❑ SPLUG❑ 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: 312-268 Contact Nita Summerhays Email Nita.Summerhaysbp.com Printed Name Nita Summerhays Title Petrotechnical Data Technician .►-/ AO 7 i� Signa 2)/jr ff� ,,,, A, , %, Phone 564-4035 Date 1/31/2013 yr RSDMS FEB, 012015 �i U�Ir !0%0 ! 13 Form 10-404 Revised 10/2012 Submit Original Only /4141°/� Daily Report of Well Operations ADL0028261 ACTIVITYDATE ( T/I/O= 430/315/0 Temp.- SI Assist Slickline w/ Load &Test . MIT-IA PASS to 2500 psi. (Injection Conversion) Pumped 40 bbls of 180* F diesel down tubing while SL brushed. Reached MIT-IA test pressure with 13.3 bbls diesel. Passed 1st test-1st 15 min IA lost 178 psi, 2nd 15 min IA lost 15 psi for a total loss of 193 psi. 9/14/2012 Bled IA down to 870 psi until gas.(4 bbls). ***WSR Continued*** ***WELL S/I ON ARRIVAL***( pre agocc/witnessed mitia) BRUSH & FLUSH TBG TO 7000' SLM PULLED BK-OGLV FROM STA#2 @ 6764' SLM/6769' MD PULLED BK-LGLV FROM STA#3 @ 4167' SLM/4177' MD SET STA# 3,2 9/14/2012 ***JOB CONTINUED ON 9/15/12*** ***JOB CONTTNUEDI-ROM 9/14/12*** PULLED EMPTY SS CATCHER FROM 6899' SLM. 9/15/2012 ***WELL S/I, WELL TURNED OVER TO DSO**** ***WSR Continued*** Assist slickline (Injection Conversion) RD otf IA. Slickline in control of well upon departure. IA, OA= OTG FWHP's= 238/780/0 9/15/2012 psi FLUIDS PUMPED BBLS 54 DIESEL 54 TOTAL Packers and SSV's Attachment ADL0028261 SW Name Type MD TVD Depscription S-128 PACKER 8884 6637.81 4-1/2" HES TNT Packer S-128 PACKER 8963 6677.09 5" Baker ZXP Top Packer S-128 PACKER 9411 6788.25 4-1/2" Swell Packer Assembly S-128 PACKER 9540 6779.34 4-1/2" Swell Packer Assembly S-128 PACKER 10731 6765.75 4-1/2" Swell Packer Assembly S-128 PACKER 10803 6786.96 4-1/2" Swell Packer Assembly S-128 PACKER 11190 6853.72 4-1/2" Swell Packer Assembly S-128 PACKER 11234 6857.42 4-1/2" Swell Packer Assembly S-128 PACKER 11813 6835.05 4-1/2" Swell Packer Assembly TTrCC= CAW 'iNELLHEAD= FMC S-128 SAFETY NOTES:WELL ANGLE 700>@ 9176'. ACTUATOR= LEO(ME-60) IB.ELEV= _� 66.66' BF.ELEV= 38.0' I I KOP= 500' 20"INSULATED 112' Max Angle= 98" @ 12561' 1 , 2101' H 41/2"HES X NP,D=3.813" Datum ND= 9009' CONDUCTOR, Datum ND= 6700.SS H-40,91.5#, 13=19.124" GAS LFT MANDRELS J ST MD IV!) DEV TYPE V LV LATCH PORT DATE —9-5/8"CSG,40#,L-80 BTC,D=8.835' — 3772' 3 4177 3495 46 KBG2 DMY BK 0 09/15/12 7 2 6769 5304 44 KBG2 DMY BK 0 09/15/12 1 8732 6629 59 KBG2 DMY BK 0 01/03/11 7"LPN,26#,L-80 TCI XO TO L-80 BTC-M H l 6201' I----X X I 8853' H4-1/2"HES X NP,D=3.813" x 8884' —7"X 4-1/2"HES TNT PKR,D=3.856' Minimum ID = 3.813" @ 2101' 1 1 8921' —41/2"FES XNIP,D=3.813" 4-1/2" HES NIPPLE 8957' 1—4-1/2"I-ES X NP,D=3.813" 1 8963' —17"X 5"BKR HRD ZXP LTP,13=4.380" 1. 41/2"TBG, 12.6#,L-80 TCA, 8969' / \ 8969' H4-12"V LEG,D=3.958" .0152 bpf,D=3.958" 8986' —17"X 5'BKR FLEX LOCK LNR HGR 13=4.370" \ ` 8996' --I5"X 4-1/2"XO,D=3.94' 7"LNC 26#,L-80 BTC-M —1_ 9116' 1--41 Ii BKR CMD SLIDING SLEEVE,ID=3.813"BX PROFILE .0383 bpf,D=6.276" SIZE NO# TOP DEPTH Opn/Sqz DATE 41/2" 6 9272 0 05/04/12 4-1/2" 5 9891 0 05/04/12 4-1/2' 4 10465 0 05/04/12 4-1/2" 3 11548 C 11/19/12 4-1/2" 2 12043 C 11/19/12 PERFORATION SUMMARY 4-112" 1 12412 C 11/19/12 FEF LOG:LW) ANGLE AT TOP PERF: 20'OBM Swell Packers @ Note:Refer to Production DB for historical pert data 8930',9714', 10659'and 12266' SIZE SPF INTERVAL Opn/Sqz DATE �� on 3-1/2",92#,LSO,ID= Ti 2.992" ii v4�, Aii 31'ELEMENT OIU WATER NOTE LINER IS UNCEMENTED V SWELL PACKER ASSEMBLY D ii NO SCE TOP DTH MN vj 7 4-1/2" 9411 3.958" .II /i 6 4-1/2" 9540 3.958" dA ( 5 4-1/2" 10731 3.958" di 4 4-1/2" 10803 3.958" yi ii 3 4-12" 11190 3.958" 2 4-12" 11234 3.958" ii 4' 1 4-12" 11813 3.958" 12535' —4-1/2"CBP FBTD 12551' ,i (04/01/11) 4-1/2"LNR 12.6#,L-80 BT-M.0152 bpf,13=3.958" —1 12596' DATE REV BY CONSENTS DATE REV BY CONVENTS PRIDHOE BAY UNIT 01/04/11 NIES ORIGINAL COMPLETION 05/08/12 RMWJMD SET IBP(04/30/12) WELL: S-128 03/28/11 TW/PJC SLD SLV/MID UPDATE 05/08/12 RRW/JMD OPEN SS,PULL BP(05/04/12) PERk4T No:1101590 04/02/11 RMHVPJC OPEN SLD SLV'S(04/01/11) 09/18/12 WRR/JMD GLV CJO(09/15/12) AR No: 50-029-23436-00 04/04/11 CJS/PJC SET CBP(04/01/11) 11/26/12 TTW/JMD CLOSE SLD SLVs(11/19/12) SEC 35,T12N,R12E,2048'FN-&716'FVVL 05/16/11 JMF/PJC CLOSESLDSLVs(5/14/11) 04/22/12 MZ/PJC LtkIR COITION BP Exploration(Alaska) I z.1O- \ ' 22123 1 4? O O) G) 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 Z 0 U 0 CCI r •- r .'e- 1- e- e- e- ° _ O PCS yU ch ,--1 0 ) v z E., +-' fir _° v Q3 cn U i ! C E o m an 1 m + r E N Q (13 KJy ' i ', N N N N N N N N N N N Y N cu Q) 0 e- e- Na- r a- e- ,_ .,- , a1 GD � r U Q a > V > U V > UVUO C, � C yy// y ( rOfOZOZ OZp prts I- .J e- N 0 M co M N "' O . Oacc ,....Li )-r � � O Q1 C (t r... e- .- N eeX O5 Q2 7,, ,r.. z , co A- ,----;,--,. i72...... ., i .. Z Oo oO LL J J J ce 1 i= m Z Z d w v LL 0 LL 0 0 0 3 "c` CC a.CO a m 9 0 tt re w p p 3 Et = J j 2 2 2 s Q a 2 JO m a w w w w CO w w w LL aF- 11- 0 1 . m m ei [t co V~1 4 N F-WZ o X X X X X X X X X X X X Q a cc 0 H i 0 CC CD cc to co N to ti Zi; N 4 1. O T In s•` O co O CID W � � 1 - cc O O a Cr O O O O O O O O O O - Q O O O TD O 003 < ,_ , O' LL O m O' U Q _ .I O fmn OWial e- ch N < u) < CO X .- in N co �� a) oo O O m ril U U m m U m U m U U U U uo rn O i•• cn FA N •, •N > O' ' CIDrj Ol ^O �.. �'\ C cn m a a`, d1 a s O1 w m m Q Q c0 co a Lo Q o •v ,' = N ° a) y rro al ai 2 0 0 CO c� t'.. N N N N O m N ayj U. C uo @c g w E on u < 7 N p . N a an LL m m to Z al co w Z d N Z 7 J °D > N U O _ .� C`J t7,.. r r O Q Li) L I d '''' _CD L.° N v O _d al v a OO C 1 rn 0 y ?i L,4,' a .; X a m rn Q MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Wednesday,November 14,2012 TO: Jim Regg �efI 1((2(i1v P.I.Supervisor SUBJECT:Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC S-128 FROM: Chuck Scheve PRUDHOE BAY UN AURO S-128 Petroleum Inspector Src: Inspector Reviewed By: P.I.Supry 302— NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UN AURO S-128 API Well Number 50-029-23436-00-00 Inspector Name: Chuck Scheve Permit Number: 210-159-0 Inspection Date: 10/6/2012 Insp Num: mitCS121007153735 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Weill S-128 - Type Inj N" TVD 6704 IA 209 1998 - 1926 1897 - PTD 2101590 - Type Test SPT Test psi 1676 - OA o 0 0 0 Interval INITAL P/F P , Tubing 86 71 65 60 Notes: Injection had stopped aprox.8 hours prior to test. Wednesday,November 14,2012 Page 1 of 1 MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Thursday,October 11,2012 TO: Jim Regg ,-) P.I.Supervisor 1e(t I(�'/7,(i v SUBJECT:Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC S-128 FROM: Chuck Scheve PRUDHOE BAY UN AURO S-128 Petroleum Inspector Src: Inspector Reviewed By: P.I.Supry e n"— NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UN AURO S-128 API Well Number 50-029-23436-00-00 Inspector Name: Chuck Scheve Permit Number: 210-159-0 Inspection Date: 10/6/2012 Insp Num: mitCS 121007153735 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min Well S-128 Type Inj N• TVD 6683 , IA 209 1998 ' 1926 1897 ' PTD 2101590 . Type Test I SPT Test psi 1670 , OA 0 0 0 0 - Interval INITAL - P/F P Tubing 86 , 71 - 65 1- 60 - Notes: Injection had stopped aprox.8 hours prior to test. Thursday,October 11,2012 Page 1 of I 5 1 R SEAN PARNELL, GOVERNOR L i" 'L L_�' � d "L Il_I E ALASKA OIL AND GAS 333 W.7th AVENUE,SUITE 100 CONSERVATION COMNIISSION ANCHORAGE,ALASKA 99501-3539 / PHONE (907)279-1433 FAX (907)276-7542 Mackie Derrick Production Engineer BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Aurora Oil Pool, S-128 Sundry Number: 312-268 Dear Mr. Derrick: Enclosed is the approved Application for Sundry Approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may file with the Commission an application for reconsideration. A request for reconsideration is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. Sincerely, Cathy . Foerster Chair DATED this[�%�d y of July, 2012. Encl. RECEIVED STATE OF ALASKA JUL 19 2012 ALASKA OIL AND GAS CONSERVATION COMMISSION ID)'' Z (/ APPLICATION FOR SUNDRY APPROVALS //� GC 20 AAC 25.280 1.Type of Request: Abandon❑ Plug for Redrill ❑ Perforate New Pool ❑ Repair Well❑ Change Approved Program ❑ Suspend❑ Plug Perforations❑ Perforate❑ Pull Tubing❑ Time Extension ❑ Operations Shutdown❑ Re-enter Susp.Well ❑ Stimulate❑ Alter Casing❑ Other: Convert to Iniection Q - 2.Operator Name: 4.Current Well Class: 5.Permit to Drill Number: BP Exploration(Alaska),Inc. Development Q Exploratory ❑ 210-159-0 . 3.Address: Stratigraphic ❑ Service ❑ 6.API Number: P.O.Box 196612,Anchorage,AK 99519-6612 50-029-23436-00-00 ' 7.If perforating,closest approach in pool(s)opened by this operation to nearest 8.Well Name and Number: property line where ownership or landownership changes: Spacing Exception Required? Yes ❑ No ❑✓ S-128 9.Property Designation(Lease Number): 10.Field/Pool(s): ADL0028257,ADL0028258,ADL0028261 PRUDHOE BAY,AURORA OIL' 11. PRESENT WELL CONDITION SUMMARY Total Depth MD(ft): Total Depth TVD(ft): Effective Depth MD(ft): Effective Depth TVD(ft): Plugs(measured): Junk(measured): 12616 6844 10538 6790 12535 None Casing Length Size MD TVD Burst Collapse Structural Conductor 82 20"91.5#H-40 30-112 30-112 1490 470 Surface 3743 9-5/8"40#L-80 29-3772 29-3212.6 5750 3090 Intermediate None None None None None None Production 9089 7"26#L-80 27-9116 27-6821.59 7240 5410 Liner 3600 4-1/2"12.6#L-80 8996-12596 6760.31 -6847.07 8430 7500 Perforation Depth MD(ft): Perforation Depth TVD(ft): Tubing Size: Tubing Grade: Tubing MD(ft): See Attachment See Attachment 4-1/2"12.6#L-80 L-80 24-8969 Packers and SSSV Type: See Attachment for Packer Types Packers and SSSV MD(ft)and TVD(ft): See Attachment for Packer Depths No SSV Installed No SSV Installed 12.Attachments: 13.Well Class after proposed work: Description Summary of Proposal P P Detailed Operations Program fl BOP Sketch ❑ Exploratory n Development ❑ Service El 14.Estimated Date for 15.Well Status after proposed work: Commencing Operations: 8/15/12 Oil ❑ Gas ❑ WDSPL ❑ Suspended ❑ 16.Verbal Approval: Date: WINJ ❑ GINJ ❑ WAG ❑✓ Abandoned ❑ Commission Representative: GSTOR ❑ SPLUG ❑ 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Prepared by Garry Catron 564-4424 Printed Name 0,(„Ai N(`T t A. Title ' ro1ucl-iu,,`6A 8 i-t ee rr- Signature Phone ,_ Dat ii. COMMISSION USE ONLY Conditions of approval: Notify Commission so that a representative may witness Sundry Number: 3' 2'2(o p Plug Integrity ❑ BOP Test ❑ Mechanical Integrity Test Location Clearance ❑ Other: if W I+t'lG SSe.Q 14 ( f -,- fi A ash4- ' - -0u('f i ope y-;., 1.+4. cc c6tD 4+/ NO 22c._, Subsequent Form Required: /6.. Y 0 / APPROVED BY Approved by: `, COMMISSIONER THE COMMISSION Date: 7-Z'. —f Z ��S f''1 2 Q {�yA ,23.(Z v Form 1 4'0 a sed 1/010 ��� 7 O „001e974,4Submit in Duplicate U I Perforation Attachment ADL0028257, ADL0028258, ADL0028261 Well 1 Date Perf Code MD Top MD Base TVD Top TVD Base S-128 4/3/11 STO 9116 9411 6822 6855 S-128 4/3/11 STO 9540 10731 6846 6832 S-128 4/3/11 STO 11276 11813 6928 6902 S-128 4/3/11 STO 11855 12547 6898 6854 S-128 4/3/11 STO 12547 12594 6854 6847 S-128 4/1/11 BPS 12596 12616 6847 6844 AB ABANDONED MIR MECHANICAL ISOLATED REMOVED APF ADD PERF MIS MECHANICAL ISOLATED BPP BRIDGE PLUG PULLED MLK MECHANICAL LEAK BRIDGE BPS PLUG SET OH OPEN HOLE FCO FILL CLEAN OUT STC STRADDLE PACK,CLOSED FIL FILL STO STRADDLE PACK, OPEN SQF SQUEEZE FAILED SPS SAND PLUG SET SQZ SQUEEZE SL SLOTTED LINER �� � G PER PERF SPR SAND PLUG REMOVED RPF REPERFS- 5Lc, Y 1 • 30 1. L3. Packers and SSV's Attachment ADL0028257, ADL0028258, ADL0028261 Well Facility Type MD Top Description TVD Top S-128 PACKER 8884 4-1/2" HES TNT Packer 6704 S-128 PACKER 8963 5" Baker ZXP Top Packer 6744 S-128 PACKER 9411 4-1/2" Swell Packer Assembly 6855 S-128 PACKER 9540 4-1/2" Swell Packer Assembly 6846 S-128 PACKER 10731 4-1/2" Swell Packer Assembly 6832 S-128 PACKER 10803 4-1/2" Swell Packer Assembly 6854 S-128 PACKER 11190 4-1/2" Swell Packer Assembly 6920 S-128 PACKER 11234 4-1/2" Swell Packer Assembly 6924 S-128 PACKER 11813 4-1/2" Swell Packer Assembly 6902 TREE= CM/ WELLHEAD= FMC S-1 2 8 SAFE!Y NOTES:WELL ANGLE 70°>@ 9176'. ACTUATOR= LEO(ME-60) KB ELEV= 66.66' BF.ELEV= 38.0' I KOP= 500' 20"INSULATED 112' Max Angle= 98° @ 12561' I , 2101' _I—4-1/2'HES X NIP, ID=3 813" Datum NO= 9009' CONDUCTOR Datum TVD= 6700 SS H-40,91.5#. 10=19 124" GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 9-5/8"CSG,40#, L-80 BTC, ID=8 835" — 3772' �� 3 4177 3495 46 KBG2 DOME BK 16 03/22/11 I 1 2 6769 5304 44 KBG2 SO BK 20 03/22/11 �, 1 8732 6629 59 KBG2 DMY BK 0 01/03/11 7"LNR 26#, L-80 TCII XO TO L-80 BTC-M H 6201' X X ' , 8853' f—4-1/2"HES X NIP ID=3.813" 8884' —7"X 4-1/2"HES TNT PKR, ID=3 856" ' , 8921' .—4-112"HES X NIP, ID=3 813" Minimum ID = 3.813" @ 2101' 4-1/2" HES NIPPLE 8957' `-4-1/2'HES XNIP, ID=3.813" 8963' H7"X 5" BKR HRD ZXP LTP, ID=4 380" 4-1/2'TBG, 12 6#,L-80 TCII, H 8969' \ 8969' H4-12 W " LEG, ID=3.958" 0152 bpf. ID=3.958" 8986' H7'X 5"BKR FLEX LOCK LNR HGR, ID=4 370" `-"' 8996' --{5"X 4-12"X0,10=3.94" 7"LNR 26#, L-80 BTC-M, —{ 9116' F---44 11. BKR CMD SLIDING SLEEVE,I0=3.813"BX PROFILE 0383 bpf, ID=6 276" SIZE NO# TOP DEPTH Opn/Sqz DATE 4-12" 6 9272 0 05/04/12 4-12" 5 9891 0 05/04/12 4-1/2" 4 10465 0 05/04/12 4-12" 3 11548 0 04/01/11 4-1/2" 2 12043 0 04/01/11 PERFORATION SUMMARY 4-12 1 12412 0 04/01/11 REF LOG LWD ANGLE AT TOP PERF 20'OBMSwell Packers @ Note Refer to Production D8 for historical pert data 8930',9714'. 10659'and 12266' SIZE SPF INTERVAL Opn/Sqz DATE �� on 3-1/2",9 2#,L-80, ID= yi 2.992" A. Inde04 yr 31'ELEMENT OIU WATER NOTE LINER IS UNCEMENTED VIA‘41 SWELL PACKE?I2ASSEMBLY NO SIZE TOP DEPTH NAN ID 7 4-12" 9411 3 958" i6 4-12" 9540 3 958" 1� 5 4-12" 10731 3 958" 4 4-12" 10803 3 958" �� Vor 3 4-12" 11190 3 958" 2 4-12" 11234 3 958" ,' 1 4-1/2" 11813 3 958" 12535' —4-1/2"CIBP PBTD 12551' �i (04/01/11) 4-12"LNR,12 6#, L-80 IBT-M, 0152 bpf, ID=3 958" H 12596' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01104111 N7 ES ORIGINAL COMPLETION 01/08/12 MSS/PJC PULL DH GAUGES WELL S-128 03/28/11 TW/PJC SLD SLV/PBTD UPDATE 0422/12 MZ/PJC LNR CORRECTION PERMIT No '2101590 04/02/11 RMWPJC OPEN SLD SLV'S(04/01/11) 05/08/12 RMI-VJMD SET IBP(04/30/12) API No 50-029-23436-W 04/04/11 CJS/PJC SET CIBP(04/01/11) 05/08/12 RRW/JMD OPEN SS, PULL IBP(05/04/12) SEC 35,T12N, R12E 2048'FNL&716'FWL 05/16/11 JMF/PJC CLOSE SLD SLVs(5/14/11) 09/21/11 GJF/PJC HES DH GAUGES(07/11/11) BP Exploration (Alas ka) Saltmarsh, Arthur C (DOA) From: Hubble, Terrie L [Terrie.Hubble@bp.com] Sent: Monday, June 13, 2011 4:47 PM To: Saltmarsh, Arthur C(DOA) Subject: PBU S-128/PTD#210-159 Hi Art, Please reference the following well: Well Name: PBU S-128 Permit#: 210-159 API #: 50-029-23436-00-00 Top Perf MD: 9272' Bottom Perf MD: 12416' This well began Production on May 28, 2011 Method of Operations is: Flowing (Pre-Produced Injector) Date of Test: 05/28/11 Hours Tested: 24 24-Hour Rate/Oil-Bbl: 2,441 24-Hour Rate/Gas-Mcf: 2,027 24-Hour Rate/Water-Bbl: 129 Test Rate/Oil-Bbl: 2,441 Test Rate/Gas-Mcf: 2,027 Test Rate/Water-Bbl: 129 Choke Size: 96 Gas-Oil Ration: 830 Flow Tubing Pressure: 1500 Casing Pressure: -0- Oil Gravity-API: 26.9 1 0 6 i ..:z.--.4.4.,-,..--, `attic.,:, _. E• 8 z i U• . �> 3 i C N =O '3 y , ., U tya' ~ r'r wy fm ',.et y � o _ t w ' W M A d N x. . N c U MQQfnQ YO 2a l0 O m m O O (7 Is.a G 0 ..-W N 0 10 EU m N c o O Q N Q z C.) m N n v) N N H h h N N O d O O N O N N N N N N Fs . N N N O O CO Q aD N N 7.74 N PS a In () M N fh a7 < ;) - N O r x . w a 0 O U N O x W UJ Z -.1 0 0 0 0 (9 30313 z LL J LL () U. c 2 ZctScc 7H S U m _.aaaa0W C O DO Q Q. ZQ. LLQ 2222cegrFW W- z UW W WCIWNC/)Sxx Z 032U2CL2 = CYUUO Z MD N)n cO 00c) A O )n CO r) 0 O 000v.) 000000 5 0 0 0 o 0 0 0 0 0 0 0 0 o Q }m In -, CC co ¢m CO a X N m US' I.- 0 U J V J 5 O >U U J S U co m m CO Q m Q m CO CD mW '- W (.1 d c 7 Fi O — c _ y O m d c - N J y U L N ca r) �p -p SD a9 U d 'o _ UNNNNNO `rNct mvmi Oa2m L N N .- N W N Or — x 07 M Z C C OD ea I All A - a OUmx (") N � es)O (nQW Y o 3 o U N E d r Q 13ui 4i 'C '' E m n N m x 0 o Z w w ° " !D Nlia. CI. COUJ a a I t 0 STATE OF ALASKA ALASKA L AND GAS CONSERVATION COMMISSIO. REPORT OF SUNDRY WELL OPERATIONS 1.Operations Abandon ❑ Repair Well ❑ Plug Perforations ❑ Stimulate❑ Other 0 CONVERT TO Performed: Alter Casing ❑ Pull Tubing❑ Perforate New Pool ❑ Waiver❑ Time Extension ❑ OIL DEVELOPMENT Change Approved Program ❑ Operat.Shutdown❑ Perforate 0 Re-enter Suspended Well ❑ 2.Operator BP Exploration(Alaska),Inc. 4.Well Class Before Work: 5.Permit to Drill Number: Name: Development❑ Exploratory ❑ - 210-1590 3.Address: P.O.Box 196612 Stratigraphic Service ❑, 6.API Number: Anchorage,AK 99519-6612 ,, 50-029-23436-00-00 8.Property Designation(Lease Number): 9.Well Name and Number: ADLO-028257/028258/028261 S-128 10.Field/Pool(s): PRUDHOE BAY FIELD/AURORA POOL 11.Present Well Condition Summary: 1 Total Depth measured 12616 feet Plugs(measured) 12535 feet true vertical 6844.3 feet Junk(measured) None feet Effective Depth measured 12551 feet Packer(measured) SEE BELOW feet true vertical 6853.2 feet (true vertical) feet Casing Length Size MD TVD Burst Collapse Structural Conductor 82' 20"91.5#H-40 30 - 112 30 - 112 1490 470 Surface 3743' 9-5/8"40#L-80 29 - 3772 29 - 3213 5750 3090 Production 9089' 7"26#L-80 27 - 9116 27 - 6822 7240 5410 Liner 3600' 4-1/2"12.6#L-80 8996 - 12596 6760 - 6847 8430 7500 Liner Liner Perforation depth: Measured depth: SEE ATTACHED- - True Vertical depth: _ _ _ _ ..z. Tubing:(size,grade,measured and true vertical depth) 4-1/2"12.6# L-80 24-8969 24-6747 Packers and SSSV(type,measured and true vertical depth) 4-1/2"HES TNT PKR 8884 6704 5"Baker ZXP Too Packer 8963 6744 I 4-1/2"SWELL PKR ASSEMBLY 9411.9540 6855.6846 4-1/2"SWELL PKR ASSEMBLY 10731.10803 6832 6854 4-1/2"SWELL PKR ASSEMBLY 11190 6920.6924 4-1/2"SWELL PKR ASSEMBL ECEI6802 12.Stimulation or cement squeeze summary: Intervals treated(measured): MAY 't 1 NI' Treatment descriptions including volumes used and final pressure: Alaska Oil&CoA Cons.Commission 13. Representative Daily AveragettAccRafibillir Injection Data Oil-Bbl Gas-Md Water-Bbl Casing Pressure Tubing pressure Prior to well operation: SI Subsequent to operation: 14.Attachments: 15.Well Class after work: Copies of Logs and Surveys Run Exploratory Development 0 -- Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16.Well Status after work: Oil .Q Gas 0 WDSPL ❑ GSTOR ❑ WINJ ❑ WAGE] GINJ 0 SUSP❑ SPLUG 0 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: NA Contact Joe Lastufka Printed Name Joe Lastufka Title Petrotechnicaf Data Technologist Signature Phone 564-4091 Date 5/6/2011 Form 10-404 Revised 10/2010Submit Original Only RBDMS MAY 1_. �1 _ e2 s'-��'t� ,// e- e- e- et e'M et e- ":47Y) e- e- A eV C! f- M Mti ,41Y) tiM R N e- e, r t` e- N et v N e- 1. �! M O � 00 et O M �! Co O M O et m2ego83t000822e02aoa 3 E wwwe0 caememe0 www (O O. 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M e- e- N e- e- M Cf N C�M e- e= N Q.0 e- e- e- r+ � Ce- � Q' mNQpLLW Wo WaJMMOUff�� II- W 2 mwww ncncnmm 0 a a o W 0 > c 0 o 2 �a w L W 0 0. co O w HH • _ _ _ _ _ 55 a00000aiv~ic~i� cimccoc~nW W 000000000 acwm DD J °' t9 t9 O 44 eU) 00000 m m M M M v v v , w W J J �d NN V00J o O W W J _ :IC OWa0 (9 () = = = z o 44pOOJJ0C) 0W p, m p 2 E J J W W W a O 44mmMM2220 0 E Z Cp n C0 ea CO Co CD CO CO CO Co CD CO C0 LL a m 0 J ceco = zNNNNNNNNNNNNNN oq4 Uu� ma� u� mu� a� t� v� tnmcnm6 aammuLLiEm0 Change of service -PBU S-128 Page 1 of 2 Lastufka, Joseph N (SAIC) From: West, Taylor Sent: Thursday, May 05, 2011 1:37 PM To: G ANC PDC Subject: FW: Change of service- PBU S-128 (PTD 210-159) can you prepare a draft 10-404 for review? From: Schwartz, Guy L (DOA) [mailto:guy.schwartz@alaska.gov] Sent: Thursday, May 05, 2011 1:13 PM To: West,Taylor Cc: McMains, Stephen E (DOA) Subject: RE: Change of service - PBU S-128 (PTD 210-159) Taylor, We still need a 10-404 to document the change in service and well class (To: Oil/Development) . Sorry if I misspoke before in our conversation. I think at that time you were not sure if you would go past 30 days of production. When you go back to Injection service a 10-403 will be needed.... Thanks, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: West,Taylor [mailto:Taylor.West@bp.com] Sent: Thursday, May 05, 2011 11:16 AM To: Schwartz, Guy L(DOA) Cc: G ANC PDC Subject: Change of service - PBU S-128 Guy: I wanted to capture our discussion from a few days ago regarding new well S-128. S-128 was permitted and drilled as a WAG injector. Excellent flowback/cleanup performance prompts us to look to produce the well for up to 1 yr, then convert to WAG service. I believe you were going to use this e-mail as your record to the AOGCC requesting the well be classified as a producer. When we desire to change the service to WAG injection,we will contact you to ensure the proper paperwork is filed. 5/5/2011 'Change of service-PBU S-128 Page 2 of 2 Please let me know if this is your recollection as well, and whether there is anything I misunderstood or need to do at this time. Thx Taylor West High Value Wells Lead New Wells Delivery Team BP Exploration (Alaska), Inc. 907.564.4647 (desk) 907.632.0111 (cell) 5/5/2011 TREE' CIW SWELLHEADR - SAFETY Ni :WELL ANGLE 70°>@ 9176' ACTUATO = FMC ACTUATO = LEO(ME-60) KB. ELEV= 66.66' BF.ELEV= 38.0' I I MaxAngle 98° 0 125610' 20"INSULATED 112' ' , 2101' H4-1/2"HES X NIP,ID=3.813" I Datum MD= 9009' CONDUCTOR, Datum TVD= 6700.SS H-40,91.5#, ID=19.124" 9-5/8"CSG,40#,L-80 BTC, ID=8.835" —I 3772' I—, GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV , LATCH PORT DATE 3 4177 3495 46 KBG2 DOMBK 16 03/22/11 7"LNR,26#, L-80 TCII XO TO L-80 BTC-M --I 6201' }—X L X 2 6769 5304 44 KBG2 SO BK 20 03/22/11 1 8732 6629 59 KBG2 DMY BK 0 01/03/11 --I 8853' H4-1/2"HES X NIP,ID=3.813" Minimum ID = 3.813"" @ 2101' 4-1/2" HES NIPPLE 8884' H 7"X 4-1/2"HES TNT PKR, ID=3.856" 1 r---I 8921' H 4-1/2"HES X NIP,ID=3.813" I 11-1 8957' H4-1/2"HES X NIP, ID=3.813" 8963' —17"X 5"BKR HRD ZXP LTP,ID=4.380" 4-1/2"TBG, 12.6#,L-80 TCII, --I 8969' 1 8969' —4-112"WLEG, ID=3.958" .0152 bpf,ID=3.958" 8986' —I 8996' I-15"X 4-1/2"XO, ID=3.94" 7"LNR,26#,L-80 BTC-M, --I 9116' 1_A 0383 bpf, ID=6.276" BKR CM D SLIDING SLEEVE,ID=3.813"BX PROFILE SIZE NO# TOP DEPTH Opn/Sqz DATE 4-1/2" 6 9272 0 04/01/11 4-1/2" 5 9891 0 04/01/11 4-1/2" 4 10465 0 04/01/11 4-1/2" 3 11548 0 04/01/11 /� 4-1/2" 2 12043 0 04/01/11 iii 4-1/2" 1 12412 0 04/01/11 PERFORATION SUMMARY �� 31' ELEMENT OIL/WATER REF LOG LWD •07,44. 1 SWELL PACKERASSEMBLY ANGLE AT TOP PERF:59°@ 9116' '4 �� NO SIZE TOP DEPTH MIN ID Note:Refer to Production DB for historical perf data '# 7 4-1/2" 9411 3.958" SIZE SPF INTERVAL Opn/Sqz DATE � it 6 4-1/2" 9540 3.958" yr �j 5 4-1/2" 10731 3.958" y% .j 4 4-1/2" 10803 3.958" AA. 3 4-1/2" 11190 3.958" NOTE LINER IS UNCEMENTED �f .j 2 4-1/2" 11234 3.958" 1 4-1/2" 11813 3.958" yr 12535' —4-1/2"CIBP(04/01/11) PBTD — 12551' , 4-1/2"LNR, 12.6#,L-80 IBT-M,.0125 bpf, ID=3.958" —I 12596' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/04/11 N7ES ORIGINAL COMPLETION 03/28/11 TW/PJC SLD SLV/PBTD UPDATE WELL: S-128 01/08/11 PJC DRLG DRAFT CORRECTIONS 04/02/11 RMH/PJC OPEN SLD SLV'S(04/01/11) PERMIT No:'2101590 01/11/10 TW/PJC FINAL DRLG CORRECTIONS 04/04/11 CJS/PJC SET CIBP(04/01/11) API No: 50-029-23436-00 03/01/11 DDK/PJC TREE C/O(01/04/11) SEC 35,T12N,R12E,2048'FNL&716'FWL 03/27/11 TW/PJC SLD SLV/PBTV CORRECTIONS 03/28/11 JM/PJC GLV C/O(3/22/11) BP Exploration(Alaska) Change of service -PBU S-128 Page 1 of 2 Schwartz, Guy L (DOA) From: Schwartz, Guy L (DOA) Sent: Thursday, May 05, 2011 1:13 PM To: West, Taylor' Cc: McMains, Stephen E (DOA) Subject: RE: Change of service- PBU S-128 (PTD 210-159) Taylor, We still need a 10-404 to document the change in service and well class (To: Oil/Development) . Sorry if I misspoke before in our conversation. I think at that time you were not sure if you would go past 30 days of production. When you go back to Injection service a 10-403 will be needed.... Thanks, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: West,Taylor [mailto:Taylor.West@bp.com] Sent: Thursday, May 05, 2011 11:16 AM To: Schwartz, Guy L(DOA) Cc: G ANC PDC Subject: Change of service - PBU 5-128 Guy: I wanted to capture our discussion from a few days ago regarding new well S-128. S-128 was permitted and drilled as a WAG injector. Excellent flowback/cleanup performance prompts us to look to produce the well for up to 1 yr, then convert to WAG service. I believe you were going to use this e-mail as your record to the AOGCC requesting the well be classified as a producer. When we desire to change the service to WAG injection, we will contact you to ensure the proper paperwork is filed. Please let me know if this is your recollection as well, and whether there is anything I misunderstood or need to do at this time. Thx Taylor West High Value Wells Lead New Wells Delivery Team 5/5/2011 *Change of service - PBU S-128 Page 2 of 2 BP Exploration (Alaska), Inc. 907.564.4647 (desk) 907.632.0111 (cell) 5/5/2011 STATE OF ALASKA ' ALASKA _AND GAS CONSERVATION COMMISSIC REPORT OF SUNDRY WELL OPERATIONS 1.Operations Abandon ❑ Repair Well ❑ Plug Perforations ❑ Stimulate Other Q SET PLUG I Performed: Alter Casing ❑ Pull Tubing❑ Perforate New Pool ❑ Waiver Time Extension 0 Change Approved Program ❑ Operat.Shutdown❑ Perforate ❑ Re-enter Suspended Well 0 2.Operator BP Exploration(Alaska),Inc. 4.Well Class Before Work: 5.Permit to Drill Number: Name: Development 0 Exploratory 0 + 210-1590 3.Address: P.O.Box 196612 Stratigraphic Service ❑., 6.API Number: Anchorage,AK 99519-6612 ' 50-029-23436-00-00 8.Property Designation(Lease Number): r 6 9.Well Name and Number: 1 ADLO-028257,02858,028261 • S-128 10.Field/Pool(s): . PRUDHOE BAY FIELD/AURORA POOL 11.Present Well Condition Summary: Total Depth measured 12616 feet Plugs(measured) 12535 feet true vertical 6844.3 feet Junk(measured) None feet Effective Depth measured 12535 feet Packer(measured) SEE PACKERS AND SSSV feet true vertical 6855.03 feet (true vertical)SEE PACKERS AND SSSV feet Casing Length Size MD TVD Burst Collapse Structural Conductor 82' 20"91.5#H-40 30 - 112 30 - 112 1490 470 Surface 3743' 9-5/8"40#L-80 29 - 3772 29 - 3213 5750 3090 Production 9089' 7"26#L-80 27 - 9116 27 - 6822 7240 5410 Liner 3600' 4-1/2"12.6#L-80 8996 - 12596 6760 - 6847 8430 7500 Liner Liner 1 Perforation depth: Measured depth: SEE ATTACHED- — - True Vertical depth:_ _ _ _ Tubing:(size,grade,measured and true vertical depth) 4-1/2"12.6# L-80 24-8969 24-6747 Packers and SSSV(type,measured and true vertical depth) 4-1/2"HES TNT PKR 8884 6704 5"BKR HRD ZXP LTP 8963 6744 4-1/2"SWELL PKR ASSEMBLY 9411,9540,10731 6855,6846,6832 4-1/2"SWELL PKR ASSEMBLY 108' 190 6854.6920 4_1/2"SWELL PKR ASSEMBLY RECEI ; , 11 i3 6924 6901 12.Stimulation or cement squeeze summary: Intervals treated(measured): ZU1 Treatment descriptions including volumes used and final pressure: ke & APR basU7 Const'Con mission ktilig 13. Representative Daily Average PI'8iai8fibgtirijection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing pressure Prior to well operation: SI Subsequent to operation: 14.Attachments: 15.Well Class after work: Copies of Logs and Surveys Run Exploratory Development 0 Service D • Stratigraphic ❑ Daily Report of Well Operations X 16.Well Status after work: • Oil ❑ Gas 0 WDSPL ❑ GSTOR ❑ WINJ 0 WAGO GINJ 0 SUSHI] SPLUG 0 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: NA Contact Joe Lastufka Printed Na .= Lastufk Title Data Manager Signatur= 1 , Phone 564-4091 Date 4/7/2011 Form 10-404 Revised 10/2010 FIBDMS APR 07 201 41.8 '!( Submit Original Only e- er M er '— e- M N ; g er d � � � M M ti � •1)-) O� � ti M 10erN , r: ti , N444Na- I` OMOerOet0MOOOOMOet m 00 M M eq. W Oo M 0o Oo W M. Ce.. q Oo 5 W c0 (O OCD co 4 CO OD ( c0 OD a 0) 0 > F- _ _ ON O ti CO N CI 01 01 N CO a O v Oo MOM 00 4 co al v Oo M o , ao ti Oo r, Oo I,: ao — M , 00 1` 00 HN �NO) V0N 'NONc NM s CO 0 00al ao w CO CO CO 01 CO Q,co 0 cD O co m c0 co c0 caw 0 o Nz la 0 W f' j O 0 � , , riefccetrire= CO .= C) i- C) O 0 YY Ni- Me- OIe- Oa- Mrr � Me• a) 6,- ... ... la� F- err,aoOcoloOor. vcoerr, aola W J QQ mm OeNNNe- OC)NC)O -N Zu- NQ mm a. 71 00u.0 > > W W J J O WWaa ^wwoo N LL W I- 0 0 W worg d W W _JQZZDDW QOOF- F- zm ace oymmfnww W coccccricccr 666r: coccoiei g ae- et 1,- in 0 O r• a r- e- of 1` O e. ONOoOOoNOe- OVf N00 co m 0~ C) Cle- e- Ne- e- C1C)NC)Cfa- a- Qs . V. 6 N Q 8 cemregi wNW oO am aremoai) Cllimwm a) -a 0 o W 0 > O 0 �vWN L W a 00 O 0 W W t 000000000 w 1- 1-- 0 X 2 2 _ a00000cococcou) mcoc~ncoccl) mw ooa 000000000 mwm DTJ 0 0 0 _1 _1 _1 0MMMMMMMM M ,r 't W JJz < < < Ui O a N N N N N N N z0 a a a W Z Z Z -1 , m000 0 O O 2 2 Qm J O QQmm1,Ll12220 d E Z• co co op CO 03 CO CO CO CO 03 CO CO 03 CO N N N N N N N N N N N N N N q fn c%) MNV) cococococnd) c%) d) c%) d) 4 00uili2220 S-128 DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY Ac' ivITYDATE , � � , ���� SUM�1�tARY� ir" 4/1/2011 CTU #8 w/ 1.75"CT Scope: Precautionary Venturi run to remove debris/jewelry log/drift run/set CIBP/open sliding sleeves Finish POH w/logging tool/drift. RIH w/4-1/2" HES CIBP and set at 12535'. pooh. inspect gouges on pipe while pooh. Test tbg to 2000 psi. good test. lay down lubricator and injector. inspect chains and change packoff. MU BHA and 'RIH with BOT HB-3 shifting tool. Open all six sliding sleeves. Wellbore pressure is '320 psi with a full column of 2% KCI. Well would take same fluid at—0.2 bpm at 1700 psi. POH 4/2/2011 CTU #8 w/ 1.75"CT Scope: Precautionary Venturi run to remove debris/jewelry log/drift run/set CIBP/open sliding sleeves Finish POH w/BTT sliding sleeve shifting tool. RIH w/slickline shifting tool and reverify all six sliding sleeves are open. (after pooh with slick-line 42B0 shifting tool, shear pin was intact indicating all sleeves are shifted to open position) FP wellbore w/40 bbls McOH. RDMO to W-207 **job complete** FLUIDS PUMPED BBLS 40 McOH 40 TOTAL TREE= CM! SAFETY N is WELL ANGLE 70°>@ 9176' WELLHE4D= FMC S-128 ACTUATOR= LEO(ME-60) KB.ELEV= 66.66' BF.ELEV=KOP= 38.0'500' I ' _Max Angle= 98° @ 12561' 20"INSULATED 112' ' al 2101' I—I4-112"HES X NIP, ID=3.813" Datum MD= 9009' CONDUCTOR, Datum TVD= 6700.SS H-40,91.5#, ID=19.124" 9-5/8"CSG,40#,L-80 BTC,ID=8.835" — 3772' GAS LIFT MANDRELS ST MD TVD DEV TYPE_ VLV _ LATCH PORT DATE 3 4177 3495 46 KBG2 DOME BK 16 03/22/11 7"LNR,26#,L-80 TCII XO TO L-80 BTC-M -I 6201' 1---X L x 2 6769 5304 44 KBG2 SO BK 20 03/22/11 1 8732 6629 59 KBG2 DMY BK 0 01/03/11 ' ,--I 8853' I-4-1/2"HES X NIP, ID=3.813" Minimum ID =3.813"" @ 2101' 4-1/2" HES NIPPLE S ,, I 8884' H 7"X 4-1/2"HES TNT PKR,ID=3.856" ' , 8921' H4-1/2"HES X NIP,ID=3.813" --I 8957' H4-1/2"HES X NIP,ID=3.813" I I8963' —17"X 5"BKR HRD ZXP LTP, ID=4.380" 4-1/2"TBG, 12.6#,L-80 TCII, — 8969' 8969' —I4-1/2"WLEG,ID=3.958" .0152 bpf, ID=3.958" 8986' --I 8996' —15"X 4-1/2"XO, ID=3.94" 7"LNR,26#, L-80 BTC-M, — 9116' I 1 I. 0383 bpf, ID=6.276" BKR CM 0 SLIDING SLEEVE,ID=3.813"BX PROFILE SIZE NO# TOP DEPTH Opn/Sqz DATE 4-1/2" 6 9272 0 04/01/11 4-1/2" 5 9891 0 04/01/11 4-1/2" 4 10465 0 04/01/11 4-1/2" 3 11548 0 04/01/11 /� 4-1/2" 2 12043 0 04/01/11 •yr 4-1/2" 1 12412 0 04/01/11 - PERFORATION SUMMARY /A" 31' ELEMENT OIL/WATER REF LOG:LWD viir'i SWELL PACKER ASSEMBLY ANGLE AT TOP PERF:59°@ 9116' �' w� NO SIZE I TOP DEPTH I MIN ID Note:Refer to Production DB for historical pert data '' fi 7 4-1/2" 9411 3.958" SIZE SPF INTERVAL Opn/Sqz DATE �� ii 6 4-1/2" 9540 3.958" " di. 5 4-1/2" 10731 3.958" 'ice �idA. s, 4 4-1/2" 10803 3.958" �j 3 4-1/2" 11190 3.958" NOTE LINER IS UNCEMENTED 4j :� 2 4-1/2" 11234 3.958" 1 2„ 1 --.-3 „ ii �' 12535' H 4-1/2"CIBP(04/01/11) e PBTD 12551' �i _ c 5 t, 4-1/2"LNR, 12.6#,L-80 IBT-M,.0125 bpf, ID=3.958" — 12596' � f`�� .. DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/04/11 N7ES ORIGINAL COMPLETION 03/28/11 TW/PJC SLD SLV/PBTD UPDATE WELL: S-128 01/08/11 PJC DRLG DRAFT CORRECTIONS 04/02/11 RMH/PJC OPEN SLD SLV'S(04/01/11) PERMIT No: 2101590 01/11/10 TW/PJC FINAL DRLG CORRECTIONS 04/04/11 CJS/PJC SET CIBP(04/01/11) AR No: 50-029-23436-00 03/01/11 DDK/PJC TREE C/O(01/04/11) SEC 35,T12N,R12E,2048'FNL&716'FWL 03/27/11 TVV/PJC SLD SLV/PBTV CORRECTIONS 03/28/11 JM/PJC GLV C/O(3/22/11) BP Exploration(Alaska) 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 lb. Well Class: 20AAC25.105 20AAC25.110 0 Development 0 Exploratory 0 GINJ 0 WINJ ®WAG 0 WDSPL 0 Other No.of Completions One ®Service 0 Stratigraphic 2. Operator Name: 5.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number. BP Exploration(Alaska)Inc. 1/4/2011 210-159 3. Address: 6.Date Spudded: 13. API Number. P.O.Box 196612,Anchorage,Alaska 99519-6612 11/28/2010 50-029-23436-00-00 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number. Surface: 12292010 PBU S-128 3231'FSL,4564'FEL,SEC.35,T12N,R12E,UM Top of Productive Horizon: 8. KB(ft above MSL): 66,66' 15.Field/Pool(s): 5071'FNL,5111'FEL,SEC.34,T12N,R12E,UM GL(ft above MSL): 38' Prudhoe Bay Field/Aurora Pool Total Depth: 9.Plug Back Depth(MD+TVD): 1077'FNL, 1082'FEL,SEC 04,T11N,R12E,UM 12616' 6844' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation: Surface: x- 618885 y- 5979434 Zone- ASP4 12616' 6844' ADL 028257,028258,028261 TPI: x- 613111 y- 5976322 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 611883 y- 5975018 Zone- ASP4 WA 18.Directional Survey: ®Yes ❑No 19.Water depth,if offshore: 20. Thickness of Permafrost(TVD): (Submit electronic and printed information per 20 AAC 25.050) N/A ft MSL 1900'(Approx.) 21.Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 22. Re-Drill/Lateral Top Window MD/TVD: MWD,GR,RES,PWD, NEU,AZI DEN,DEN,USIT 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING Wr.PER FT. GRADE TOP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED 20" 129.5# X-65 Surface 112' Surface 112' 42" -260 sx Arctic Set _ I 9-5/8" 40# L-80 29' 3772' 29' 3213' 12-1/4" 1188 sx Arctic Set Lite:460 sx Class'G' 7" 26# L-80 27' 9116' 27' 6822' 8-3/4" 316 sx LiteCrete: 189 sx Class'G' / 4-1/2" 12.6# L-80 8963' 12596' 6744' 6847' 6-1/8" Uncemented Slotted Linerw/swell packers ,I/ 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): 4-1/2"Sliding Sleeve w/Swell Packers 4-1/2", 12.6#,L-80 8969' 8884'/6704' MD TVD MD TVD 9272'-9276' 6862'-6862' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. 9891'-9895' 6820'-6820' 10465'-10470' 6786'-6786' 0uC,a�l.' :iiitk DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED 11548'-11552' 6924'-6923' ;, = ^ 29. GEOLOGIC MARKERS(List all formations and maruers encountered): 30. 1111ORMATION TESTS NAME MD TVD Well Tested? 0 Yes ®No Permafrost Top 38' 38' If yes,list intervals and formations tested,briefly summarizing test Permafrost Base 2028' 1934' results. Attach separate sheets to this form,if needed,and submit detailed test information per 20 AAC 25.071. Top Ugnu 4370' 3629' None Top Ugnu'M'Sands 6005' 4769' Top Schrader Bluff N Sands 6341' 5002' Top Schrader Bluff 0 Sands 6494' 5110' Base Schrader Bluff/Top Colville 6892' 5391' THRZ 8723' 6625' TKLB 9076' 6801' Kuparuk C 9100' 6813' Kuparuk B 10808' 6855' Kuparuk C 11070' 6911' Formation at Total Depth(Name): Kuparuk C 11070' 6911' 31.List of Attachments: Summary of Daily Drilling Reports,Well Work Summary,Well Schematic Diagram,Surveys and a Leak-Off Test Summary. 32.I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed: Sondra Stewman ,Ia; WANE',., Title: Drilling Technologist Date:CA), ( .. I PBU S-128 210-159 Prepared By Name/Number. Sondra Stewman,564-4750 Well Number Permit No./Approval No. Drilling Engineer: Mark Staudinger,564-5733 INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item la: Classification of Service Wells: Gas Injection,Water Injection,Water-Alternating-Gas Injection,Salt Water Disposal,Water Supply for Injection, Observation,or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI(Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits(ex: 50-029-20123-00-00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval(multiple completion),so state in item 1,and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing,Gas Lift,Rod Pump,Hydraulic Pump,Submersible,Water Injection,Gas Injection,Shut-In,or Other(explain). Item 28: Provide a listing of intervals cored and the corresponding formations,and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation,and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 12/2009 Submit Original Only North America -ALASKA— BP Page 1 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/20/2010 16:00 - 21:00 5.00 MOB P PRE MOVE PITS&STAGE ON;MOVE CUTTINGS TANK,MOVE SUB OFF WELL AND STAGE ON PAD 21:00 - 00:00 3.00 MOB N RREP PRE REMOVE BRIDGE CRANE RAILS. 11/21/2010 00:00 - 05:00 5.00 MOB N RREP PRE PJSM, REMOVE BRIDGE CRANE BEAMS FROM CELLAR AND SEND TO NABORS YARD FOR REPAIR. 05:00 - 12:00 7.00 MOB N RREP PRE REPAIR SUCTION AND MIX VALVES IN PITS. CHANGE LINERS ON MUD PUMPS,CHANGE OIL IN TOP DRIVE. MAGNETIC PARTICAL INSPECTION OF TD QUILL SHAFT. GENERAL MAINTENANCE AND HOUSEKEEPING 12:00 - 00:00 12.00 MOB N RREP PRE WORK ON SUCTION VALVES IN MUD PITS, PREP S-128 CELLAR,SET MATS AND HERCULITE,SET ADAPTER,CASING SPOOL AND TUBING SPOOL AND SLIP LOCK WELL HEAD IN CELLAR. SET DIVERTER AND 1 SECTION OF DIVERTER LINE. INSPECT DRAWWORKS CHAINS;INSPECT AND LUBE ROTARY DRIVE. CHANGE DRAWWORKS OIL AND FILTER,WELDER REMOVED STOP PLATE ON BRIDGE CRANE RAIL SUPPORT BEAM AND INSTALLED ZINC ANODES IN PITS. REMOVED FLOWLINE HOSE. 11/22/2010 00:00 - 12:00 12.00 MOB N RREP PRE WAIT ON BRIDGE CRANE BEAM REPAIR. GREASE CHOKE MANIFOLD. CUT NIPPLE ON FLOW LINE AND REINSTALL FLOW LINE. NU DIVERTER LINE. CONTINUE TO WORK ON DUMP VALVE. DRESS BRIDGE CRANE WINCHES TO BE INSTALLED. INSTALL PLC FLOW METER GUAGES ON BRAKE SYSTEM. CHANGE OUT TD LUBE OIL PUMP. GENERAL HOUSEKEEPING AND MAINTENANCE 12:00 - 00:00 12.00 MOB N RREP PRE WAIT ON BRIDGE CRANE BEAM REPAIR. INSPECT DRAWWORK CLUTCHES. PREP FLOWLINE TO INSTALL FLOW SENSOR. REPLACE VALVE ON#2 BOILER FEED LINE. GENERAL HOUSEKEEPING AND MAINTENANCE 11/23/2010 00:00 - 06:30 6.50 MOB N RREP PRE INSTALL FLOW LINE SENSOR PADDLE. SERVICE PIT VALVES. GENERAL MAINTENANCE. 06:30 - 09:00 2.50 MOB P PRE PJSM. BRIDLE UP AND PREP TO LAY OVER DERRICK. 09:00 - 10:00 1.00 MOB P PRE PJSM. LAY OVER DERRICK AND SECURE RIG FLOOR. 10:00 - 21:00 11.00 MOB P PRE PJSM MOVE PITS AND RIG SUB FROM STAGING AREA NEAR WELL S-129 TO WELL S-128. MOVE AND SPOT ILLIAMNA CAMP AND SHOP NEAR WELL S-128. 21:00 - 22:00 1.00 MOB P PRE PJSM. RAISE DERRICK. AAR. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 2 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES i Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(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 MOB P PRE MU KELLY HOSE. RAISE PIPE SHUTE. BRIDLE DOWN. CONTINUE RIGGING UP WHILE WAITING ON ARRIVAL OF REPAIRED BRIDGE CRANE COMPONENTS FROM NABORS YARD. 11/24/2010 00:00 - 04:00 4.00 MOB P PRE RU FLOOR FOR DRILLING. 04:00 - 00:00 20.00 MOB N RREP PRE PERFORM GENERAL MAINTENANCE. CONTINUE TO REPAIR VALVES IN PITS. REPLACE MICRO SWITCH ON#2 BOILER. CLEAN#1 RIG AIR COMPRESSOR. WHILE WAITING ON REPAIRED BRIDGE CRANE COMPONENTS FROM NABORS YARD. 11/25/2010 00:00 - 18:00 18.00 MOB N RREP PRE PERFORM GENERAL MAINTENANCE. -CONTINUE TO REPAIR VALVES IN PITS. -REPLACE MICRO SWITCH ON#2 BOILER. -CLEAN#1 RIG AIR COMPRESSOR. -WHILE WAITING ON REPAIRED BRIDGE CRANE COMPONENTS FROM NABORS YARD. -08:00 11/25/2010, LEFT MESSAGE WITH AOGCC AT 659-3607 OF 24 HOUR NOTICE OF DIVERTER FUNCTION TEST. 08:45 1'1/25/2010,JOHN CRISP WITH AOGCC RETURNED CALL ASK TO CALL BACK WITH UP-DATE ON THE 11/26/2010. 18:00 - 19:30 1.50 MOB N RREP PRE INSPECT RAILS AFTER TRANPORT TO RIG FROM NABORS YARD. -ASSEMBLE TROLLY TO BRIDGE RAILS IN SHOP. 19:30 - 20:00 0.50 MOB N RREP PRE TOOLPUSHER HELD PJSM WITH CREW, SPOC AND WSL. -DISCUSSED BLIND PICK AND WORKING AT HEIGHTS. -THE RISK AND POSSIBLE HAZARDS OF THE JOB. 20:00 - 00:00 4.00 MOB N RREP PRE INSTALL D.S. BRIDGE CRANE RAIL. 11/26/2010 00:00 - 06:00 6.00 MOB N RREP PRE INSTALL WINCH AND COMPONENTS TO D.S. BRIDGE RAIL. -CONTINUE INSPECTION ON THE O.D.S. BRIDGE RAIL AND TROLLEY IN SHOP. 06:00 - 21:30 15.50 MOB N RREP PRE ADJUSTMENTS WERE MADE BY NOC REP TO THE O.D.S. RAIL TO GAIN PROPER CLEARANCE FOR THE ASSEMBLY OF THE TROLLEY. -INSTALL O.D.S. BRIDGE CRANE RAIL AND ASSEMBLE WENCH COMPONENTS. -FUNCTION TEST BOP BRIDGE CRANE. -08:00 HOURS 11/26/2010, LEFT MESSAGE WITH AOGCC AT 659-3607 ON UP-DATE OF DIVERTER FUNCTION TEST. -16:45 HOURS 11/26/2010, LEFT SECOND MESSAGE. -18:00 HOURS 11/26/2010, ,JOHN CRISP WITH AOGCC RETURNED CALL AND ASK TO CALL BACK WITH UP-DATE ON 11/27/2010,OR HE WILL STOP BY TO WITNESS IN THE AM. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 3 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:30 - 22:00 0.50 MOB P PRE PREP CELLAR WITH FLOW LINE RISER AND MATS FOR BACKING OVER WELL S-128. 22:00 - 00:00 2.00 MOB P PRE PJSM -MOVE SUB FROM STAGING AREA IN FRONT OF WELL AND SPOT OVER WELL 5-128. -WITH WSL AND TOUR PUSHER PRESENT. 11/27/2010 00:00 - 02:00 2.00 MOB P PRE CENTER SUB OVER WELL S-128 AND SPOT PITS AND CUTTING BOX. 02:00 - 04:30 2.50 MOB P PRE CONNECT PITS SERVICE LINES. -BERM CELLAR AND FLOW LINE. -RU RIG FLOOR. RIG ACCEPTED AT 04:00 HRS 11/27/2010. 04:30 - 08:30 4.00 BOPSUR P PRE NU 20"RISER AND ANNULUS VALVES,TAKE ON WATER. -INSTALL DRILLING NIPPLE AND TURNBUCKLES. JOHN CRISP CALLED AT 05:30 HRS AND WAIVED WITNESS OF UP COMING DIVERTER FUNCTION TEST. 08:30 - 09:30 1.00 RIGU P PRE LOAD AND STRAP 4"DP AND HWDP INTO PIPE SHED. 09:30 - 14:00 4.50 RIGU P PRE INSTALL MOUSE HOLE PJSM, PU 4"DP BUILD STANDS. STAND 25 STANDS 4"DP IN DERRICK. -STAND 5 STANDS 4"HWDP IN DERRICK. 14:00 - 16:00 2.00 RIGU P PRE PU BHA COMPONENTS TO RIG FLOOR. J 16:00 - 16:30 0.50 BOPSUR P PRE FUNCTION TEST 20"DIVERTER SYSTEM �� -ANNULAR CLOSED TIME-43 SECONDS. -KNIFE VALVE OPEN TIME-7 SECONDS. 5� -ACUMULATOR SYSTEM PRESSURE-3,000 PSI -PRESSURE AFTER CLOSURE-1800 PSI -200 PSI RECHARGE TIME-14 SECONDS. -FULL RECHARGE TIME-69 SECONDS. -5 BOTTLES AVG 1825 PSL -WITNESSED BY WSL AND NABORS TOOLPUSHER. -HELD DIVERTER DRILL. -AOGCC INSPECTOR JOHN CRISP WAIVED WITNESS ON 11/27/2010 0530 HRS. 16:30 - 18:00 1.50 RIGU P PRE PJSM -PRE SPUD MEETING. -REVIEW ADW RIG PORE PRESSURE DETECTION PLAN WITH CREW. 18:00 - 20:00 2.00 RIGU P PRE RU SLB E-LINE UNIT. -PJSM -HANG SHEAVE. -RU E-LINE AND GYRO DATA 20:00 - 20:30 0.50 RIGU P PRE PRESSURE TEST SURFACE LINES TO 3,300 PSI. 20:30 - 21:00 0.50 RIGU P PRE PU BHA#1 12.25"SURFACE BHA -HUGHES 12.25"VM-3 BIT AND MUD MOTOR -TAG ICE PLUG AT 42'MD . Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 4 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 • Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 22:00 1.00 DRILL P SURF DRILL ICE PLUG AND CMT FROM 32'TO 122' MD -10WOB -450 GPM,340 PSI ON BOTTOM,450 PSI OFF BOTTOM. -500 FT/LB TORQUE -PUW 40K,SOW 40K,RWT 40K. -30 RPM. 22:00 - 23:30 1.50 DRILL P SURF POH TO 27'MD -PU MWD AND UBHO -RIH TO 122'MD 23:30 - 00:00 0.50 DRILL P SURF DRILL FROM 127'TO 176'Mn -10WOB -500 GPM,550 PSI ON BOTTOM,500 PSI OFF BOTTOM. -600 FT/LB TORQUE -PUW 45K,SOW 45K,RWT 45K. -30 RPM. -MW 8.6 PPG. 11/28/2010 00:00 - 00:30 0.50 DRILL P SURF RUN GYRO DATA SURVEY WITH SLB E-LINE UNIT AT 176'MD. 00:30 - 02:00 1.50 DRILL P SURF DRILL FROM 176'TO 265'MD. -10WOB -500 GPM,560 PSI ON BOTTOM,530 PSI OFF BOTTOM. -800 FT/LB TORQUE -PUW 47K,SOW 47K,RWT 47K. -30 RPM. -MW 8.6 PPG. 02:00 - 04:00 2.00 DRILL P SURF POH FROM 265'TO 89'MD. -PU 12.25"NM IBS STAB,XO,(2)NM DC, NM IBS STAB, NM DC. -RIH TO 259'MD 04:00 - 04:30 0.50 DRILL P SURF RUN GYRO DATA SURVEY WITH SLB E-LINE UNIT AT 259'MD. 04:30 - 08:30 4.00 DRILL P SURF DRILL FROM 265'TO 290'MD -10WOB -500 GPM,580 PSI ON BOTTOM,530 PSI OFF BOTTOM. -800 FT/LB TORQUE -PUW 47K,SOW 47K,RWT 47K. -30 RPM. -ART=2.07 HRS. -AST= 1.03 HRS. -BIT=3.10 HRS. -JAR=53.5 HRS. -MW-8.6 PPG. -07:00 TO 08:00 HRS REPLACE#1 MP SUCTION VALVE. 08:30 - 10:30 2.00 DRILL N SFAL SURF LOST MWD SIGNAL,TROUBLE SHOOT. -CHANGE OUT STAND PIPE SENSOR. 10:30 - 11:00 0.50 DRILL N SFAL SURF POH FROM 290'TO 170'MD. -TROUBLE SHOOT MWD EQUIPMENT. -LOST 75 BBLS MUD TO FORMATION AT 10 BPH LOSS RATE. 11:00 - 12:00 1.00 DRILL N SFAL SURF TROUBLE SHOOT MWD EQUIPMENT. 12:00 - 14:30 2.50 DRILL N SFAL SURF RIH FROM 170'TO 290'MD. -NO FILL. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 5 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:30 - 17:30 3.00 DRILL P SURF DRILL FROM 290'TO 468'MD. -10WOB -550 GPM,800 PSI ON BOTTOM,7800 PSI OFF BOTTOM. -1,000 FT/LB TORQUE -PUW 60K,SOW 60K,RWT 60K. -40 RPM. -MW-8.6 PPG. -CONSULT WITH ADW TOWN ENGINEER AND ADW SUPERINTENDENT ON PLAN FORWARD FOR CLOSE APPROACH.PLAN FORWARD. 17:30 - 20:30 3.00 DRILL N DPRB 468.16 SURF POH FROM 468'TO SURFACE. -LD BIT, MOTOR,(3)STAB,XO,MWD, NM PONY DC. 20:30 - 21:00 0.50 DRILL N DPRB 468.16 SURF CLEAN RIG FLOOR. -PJSM -PU NB STAB TO RIG FLOOR. 21:00 - 22:30 1.50 DRILL N DPRB 468.16 SURF MU BHA#2 AND RIH TO 468'MD. -BHA#2: 12.25"BIT,NB STAB(WITH FLOAT), UBHO,XO,(1)JOINT 5"HWDP,JARS,XO+ 80.55'. 22:30 - 23:30 1.00 DRILL N DPRB 468.16 SURF RUN GYRO DATA SURVEY WITH SLB E-LINE UNIT AT 463'MD 23:30 - 00:00 0.50 DRILL N DPRB 468.16 SURF POH FROM 463'MD TO SURFACE. -LD NB STAB AND BIT. 11/29/2010 00:00 - 09:00 9.00 DRILL N DPRB 468.16 SURF HELD TELE-CONFERENCE WITH TOWN ENGINEERING GROUP ON PLAN FORWARD. WAIT ON CHANGE OF SCOPE ORDERS. CHANGE OF SCOPE: PUMP SURFACE. CEMENT KICK OFF PLUG, PULL RIG OFF WELL,SET PLUG IN S-134, SPOT RIG OVER WELL S-128i AND RESUME DRILLING OPERATIONS. -ADJUST TORQUE TUBE ON TOP DRIVE. -CLEAR BHA FROM RIG FLOOR. -REPAIR WASH-OUT IN HOLE FILL LINE. 09:00 - 09:30 0.50 DRILL N DPRB 468.16 SURF RD/LD GYRO DATA AND E-LINE UNITS. 09:30 - 13:00 3.50 REMCMT N DPRB 468.16 SURF THIN BACK MUD FOR CMT JOB. -00:00 TO 12:00 LOST 12 BBLS MUD TO FORMATION. -PAINT BRIDGE CRANES. -WHILE WAIT ON CEMENT LAB TEST. 13:00 - 18:00 5.00 REMCMT N DPRB 468.16 SURF LD 3 NM DC,JARS,15 JOINTS HWDP FROM DERRICK. -LD 90 JOINTS 4"DP FROM DERRICK. -THIN BACK MUD. -WHILE WAIT ON CEMENT LAB TEST. 18:00 - 00:00 6.00 REMCMT N DPRB 468.16 SURF MU CEMENT MANIFOLD. -SHIP MUD TO MI MUD PLANT. -TAKE ON H2O. -WHILE WAIT ON CEMENT TO ARRIVE ON LOCATION. -LOST 12 BBLS MUD TO FORMATION. Printed 1/28/2011 5.08.39PM North America -ALASKA- BP Page 6 of 31 Operation Summary Report Common Well Name:S-128 1 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: 1X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11/30/2010 00:00 - 05:00 5.00 REMCMT N DPRB 468.16 SURF OFF LOAD CEMENT INTO SILO. -MU 4.5"IBT(HES)FLOAT SHOE,4.5"X 4'IBT PUP,FLOAT COLLAR(HES)AND 4.5"X 10'IBT PUP,4.5"IBT X 4"HT-40 CROSS OVER. -RU CEMENT CREW. -AMBIENT TEMP(-29 DEG) 05:00 - 05:30 0.50 REMCMT N DPRB 468.16 SURF PJSM WITH CEMENT CREW AND TRUCK DRIVERS. 05:30 - 06:00 0.50 REMCMT N DPRB 468.16 SURF RIH TO 466'. -TAG FILL 2'OFF BOTTOM. -PU 10'AND MU CEMENT HEAD ASSY. 06:00 - 08:00 2.00 REMCMT N DPRB 468.16 SURF STAGE PUMPS TO 5 BPM,220 PSI AND CONDITION MUD FOR CEMENT JOB. 08:00 - 09:30 1.50 REMCMT N DPRB 468.16 SURF SURFACE CEMENT KICK-OFF PLUG. -PUMP 5 BBLS 10 PPG MUD PUSH IL -.PT LINES TO 3,500 PSI. PUMP REMAINING 40 BBLS OF MUD PUSH II. -PUMP 161 BBLS 15.8 PPG TAIL CEMENT (TOTAL CEMENT VOLUME ON LOCATION). NO CEMENT BACK TO SURFACE. 1.16 CU FT/SK;836 SKS. -PUMP 1 BBL OF WATER TO CLEAR LINES. -DROP DP WIPER DART. DISPLACE DART WITH 4.72 BBLS OF WATER. -CHECK FLOATS;FLOATS GOOD. 09:30 - 11:00 1.50 REMCMT N DPRB 468.16 SURF LD 4"DP AND RD/BD CEMENT LINES AND LD CEMENT PUMPING ASSY. 11:00 - 11:30 0.50 REMCMT N DPRB 468.16 SURF RIH TO 72'WITH JETTING TOOL. -DISPLACE CONDUCTOR TO FRESH WATER. 11:30 - 21:00 9.50 REMCMT N DPRB 468.16 SURF WAIT ON CEMENT TO GAIN COMPRESSIVE STRENGTH. -LOADED OUT FOR SECOND CEMENT RUN SINCE WE DID NOT GET CEMENT TO SURFACE. 21:00 - 22:30 1.50 REMCMT N DPRB 468.16 SURF MU/RIH WITH CEMENT STINGER ASSEMBLY. -TAG UP ON CEMENT AT 149'(SET DOWN 3K). -PU OFF BOTTOM. -CIRCULATE 150 GPM,71 BBLS,35 PSI. 22:30 - 23:00 0.50 REMCMT N DPRB 468.16 SURF WAIT ON ORDERS FROM TOWN RIG TEAM. 23:00 - 23:30 0.50 REMCMT N DPRB 468.16 SURF LD 4 JTS OF 4"DP AND TAIL PIPE ASSY. 23:30 - 00:00 0.50 REMCMT N DPRB 468.16 SURF WAIT ON ORDERS FROM TOWN RIG TEAM. 12/1/2010 00:00 - 01:30 1.50 RIGD N DPRB 468.16 SURE PU 3RD PARTY TOOLS AND RU SUPER SUCKER TO VAC LINE. -PJSM WITH TRUCK PUSHER. -ATTEMPT TO EVACUATE FLUID FROM RISER, DIVERTER,AND CONDUCTOR; UNSUCCESSFUL. -RD/BD LINES. 01:30 - 02:30 1.00 RIGD N DPRB 468.16 SURE ND DIVERTER SYSTEM. -PJSM. -REMOVE TURN BUCKLES AND FLOW NIPPLE. -RD 20"RISER. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 7 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.:NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:30 - 06:00 3.50 RIGD N DPRB 468.16 SURE PU 3RD PARTY TOOLS AND RU SUPER SUCKER LINES TO EVACUATE FLUID VIA TOP OF HYDRIL FROM DIVERTER AND CONDUCTOR. -CLEAN OUT CELLAR BOX. 06:00 - 08:00 2.00 RIGD N DPRB 468.16 SURE RD SUB AND PITS. -CLEAN PITS AND DISCONNECT SERVICE LINES. -MOVE CUTTINGS BOX. -SECURE CELLAR AND PREP FOR MOVE. -SECURE RIG FLOOR AND PREP FOR MOVE. -DISCONNECT LINES FOR SHOP AND CAMP. -PREP RIG FOR MOVE. 08:00 - 08:30 0.50 MOB N DPRB 468.16 SURE MOVE AND STAGE PIT MODULE. 08:30 - 09:00 0.50 RIGD N DPRB 468.16 SURE ND TWO END STICKS OF DIVERTER LINE AND STAGE. 09:00 - 10:00 1.00 MOB N DPRB 468.16 SURE MOVE RIG SUB OFF OF S-1281 AND STAGE. 10:00 - 10:30 0.50 RIGD N DPRB 468.16 SURE HOOK UP ELECTRICAL LINES TO SHOP AND CAMP. 10:30 - 00:00 13.50 DHB N DPRB 468.16 SURE WAIT ON SLICKLINE/PUMPING WELL WORK ON S-134(KILLING WELL AND INSTALLING DOWNHOLE BARRIER). -REPLACE BRAKE PADS ON DISC BRAKE. -REMOVE HCR KILL. -PERFORM ANNUAL INSPECTION OF FIRE EXTINGUISHERS. -REPLACE SUCTION VALVE ON MIX PUMP. -REPAIR GUN LINE FROM MUD PITS. 12/2/2010 00:00 - 17:00 17.00 DHB N DPRB 468.00 SURE WAIT ON SLICKLINE/PUMPING WELL WORK ON S-134(KILLING WELL AND INSTALLING DOWNHOLE BARRIER). -PERFORM GENERAL RIG MAINTENANCE AND UPKEEP. -CHANGE OUT HOLE-FILL PUMP. -PAINT 3512S(CAT GENERATORS),INSPECT CENTRIFUGE SCROLL. -REPLACE HCR KILL VALVE. -RETORQUE BRIDGE CRANE BOLTS. 17:00 - 18:00 1.00 MOB N DPRB 468.00 SURE REINSTALL DIVERTER LINE.. 18:00 - 22:00 4.00 MOB N DPRB 468.00 SURE SPOT SUB AND MUD PITS MODULE OVER S-1281. 22:00 - 23:00 1.00 MOB N DPRB 468.00 SURE CONTINUE MIRU. -BERM RIG AND PITS. -SET CUTTINGS BOX. -HOOK UP SERVICE LINES TO PITS. -HOOK UP ELECTRIC SERVICE TO SHOP AND CAMP. 23:00 - 00:00 1.00 MOB N DPRB 468.00 SURE NU DIVERTER. -PJSM. -INSTALL 20"RISER,TURN BUCKLES,AND FLOW NIPPLE. 12/3/2010 00:00 - 01:00 1.00 RIGU N DPRB 468.00 SURE CONTINUE TO NU DIVERTER, RISER,AND FLOW NIPPLE. -CONNECT KOOMEY LINES TO DIVERTER SYSTEM. -LOAD PIPESHED WITH DP. 01:00 - 02:00 1.00 DRILL N DPRB 468.00 SURE LOAD,STRAP,AND TALLY DP,HWDP,AND BHA INTO PIPESHED. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 8 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:00 - 08:00 6.00 DRILL N DPRB 468.00 SURE PU DP FOR DRILLING AHEAD IN 12-1/4" SURFACE HOLE. -PU 35 STANDS OF 4"DP AND STAND BACK IN DERRICK. -PU 5 STANDS OF 4"HWDP AND STAND BACK IN DERRICK. -PU ONE JAR STAND. -PU 1 STAND OF 6.75"DRILL COLLARS. 08:00 - 09:00 1.00 DRILL N DPRB 468.00 SURE TEST D VERTER. -PJSM. -FUNCTION TEST DIVERTER AND KOOMEY UNIT. -25 SECONDS KNIFE VALVE OPENED;36 SECONDS BAG SHUT. -JEFF JONES,AOGCC REP,WAIVED WITNESS OF TEST. 09:00 - 10:00 1.00 DRILL N DPRB 468.00 SURE PU AND RU GYRO. -PJSM. 10:00 - 10:30 0.50 DRILL N DPRB 468.00 SURE TEST STANDPIPE MANIFOLD AND FILL HOLE. -SURFACE TEST EQUIPMENT;TEST GOOD. 10:30 - 12:00 1.50 DRILL N DPRB 468.00 SURE PU/MU BHA#3 TO 62'AND RIH TO 143'. -PJSM. -BHA#3 CONSISTS OF: 12-1/4"HUGHES VM-3 TRI-CONE, MILLTOOTH BIT,2.12 DEGREE BEND MUD MOTOR,15'NM DC, NM IBS STABILIZER,UBHO,NM IBS STABILIZER. -TAG UP ON CEMENT AT 143'. 12:00 - 18:00 6.00 DRILL_ N DPRB 468.00 SURE DRILL AHEAD IN 12-1/4"SURFACE HOLE FROM 143'TO 468'. -ALL SLIDING TO BUILD ANGLE AND STEER; NO ROTATION. -430 GPM,550 PSI ON,485 PSI OFF. -5-10K WOB. -PU WT 55K,SO WT 52K. -GYRO FOR SURVEYS EVERY 60'. 18:00 - 20:30 2.50 DRILL P SURF DRILL AHEAD IN 12-1/4"SURFACE HOLE FROM 468'TO 568'. -ALL SLIDING TO BUILD ANGLE AND STEER; NO ROTATION. -430 GPM,550 PSI ON,485 PSI OFF. -5-10K WOB. -PU WT 55K,SO WT 52K. -GYRO FOR SURVEYS EVERY 60'. 20:30 - 21:00 0.50 DRILL P SURF CBU. -73 BBLS,430 GPM,500 PSI. -MONITOR WELL;SLIGHT LOSS. 21:00 - 23:00 2.00 DRILL P SURF POH WITH BHA#3 FROM 568'TO SURFACE. -BIT GRADE: 1-2-WT-A-E-1-RG-BHA. -MONITOR WELL;WELL STATIC. -MW 8.8 PPG IN AND OUT. 23:00 - 00:00 1.00 DRILL P SURF LD UBHO AND CHANGE OUT BIT. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 9 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/4/2010 00:00 - 05:00 5.00 DRILL P SURF PU/MU BHA#4 TO 568'. -BHA#4 CONSISTS OF:NEW 12-1/4" HUGHES VM-3 TRI-CONE, MILLTOOTH BIT, 1.83 DEGREE BEND MUD MOTOR,15'NM DC, NM IBS STABILIZER, POWERPULSE MWD, UBHO, NM IBS STABILIZER, NM BOTTLENECK XO,2 NM DCS, NM IBS STABILIZER, NM DC, FLOAT SAVER SUB,1 JT 5"HWDP, HYDRAULIC JAR,XO,16 JTS 4"HWDP,AND 4" DP TO SURFACE. -PU WT 60K,SO WT 55K. 05:00 - 12:00 7.00 DRILL P SURF DRILL AHEAD IN 12-1/4"SURFACE HOLE FROM 568'TO 828'. -450 GPM,815 PSI ON,730 PSI OFF. -WOB 15-20K. -40 RPM. -3.2K TQ ON,1.2K TQ OFF. -PU WT 70K,SO WT 67K,ROT WT 70K. -AST 4.31,ART.4,ADT 4.71. -MW 8.9+PPG IN AND OUT. -GYRO FOR SURVEYS EVERY 60'UNTIL ABLE TO GET FIRST GOOD MWD SURVEY AT 761'. 12:00 - 00:00 12.00 DRILL P SURF DRILL AHEAD IN 12-1/4"SURFACE HOLE FROM 828'TO 1,580'. -450 GPM,1,025 PSI ON,875 PSI OFF. -WOB 20K. -40 RPM. -5K TQ ON,2.5K TQ OFF. -PU WT 80K,SO WT 73K, ROT WT 75K. -AST 5.81,ART 2.93,ADT 8.74. -MW 9.1 PPG IN AND OUT. 12/5/2010 00:00 - 12:00 12.00 DRILL P SURF DRILL AHEAD IN 12-1/4"SURFACE HOLE FROM 1,580'TO 2,614'. -550 GPM,1,785 PSI ON,1,615 PSI OFF. -WOB 30K. -40 RPM. -6.5K TQ ON,5K TQ OFF. -PU WT 88K,SO WT 74K, ROT WT 84K. -AST 3.99,ART 4.01,ADT 8.00. -MW 9.4 PPG IN AND OUT. KICK WHILE DRILLING(D2)DRILL 12:00 - 20:00 8.00 DRILL P SURF DRILL AHEAD IN 12-1/4"SURFACE HOLE FROM 2,614'TO 3,779'. -690 GPM,2,900 PSI ON,2,745 PSI OFF. -WOB 30K. LC -60 RPM. �J -6.5K TQ ON,5K TQ OFF. -PU WT 115K,SO WT 82K,ROT WT 93K. -AST 1.23,ART 3.91,ADT 5.14. -MW 9.4 PPG IN AND OUT. KICK WHILE DRILLING(D2)DRILL 20:00 - 21:30 1.50 DRILL P SURF CBU X 3. -1,476 BBLS,690 GPM,2,740 PSI. -80 RPM. -5K TQ. -CLAY AND SOME GRAVEL SEEN AT BUS. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 10 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date. X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.:NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:30 - 00:00 2.50 DRILL P SURF POH FROM 3,779'TO 2,238'. -MONITOR WELL;WELL STATIC. -35K OVERPULLS SEEN AT 2,642'-2,619'AND 2,547';WIPE TIGHT SPOTS. PUMP OUT AT 450 GPM,1,175 PSI FROM 2,547'TO 2,426'. -35K OVERPULLS SEEN AT 2,295-2,257'. -PUMP OUT AT 450 GPM,1,030 PSI FROM 2,295'TO2,238'. 12/6/2010 00:00 - 00:30 0.50 DRILL P SURF POH FROM 2,238'TO BASE OF PERMAFROST AT 2,023'. 00:30 - 01:00 0.50 DRILL P SURF CBU. -450 GPM,1,070 PSI ON DOWNSTROKE;690 GPM,1,970 PSI ON UPSTROKE. HOLE UNLOADED CLAY AND GRAVEL AT BUS. 01:00 - 02:30 1.50 DRILL P SURF RIH WITH BHA#4 TO 3,779'. -TAG ON BOTTOM;NO FILL. 02:30 - 04:00 1.50 DRILL P SURF CBU X 3. -1,476 BBLS,690 GPM,2,740 PSI. -80 RPM. -5K TQ. -CLAY AND SOME GRAVEL SEEN AT BUS. 04:00 - 04:30 0.50 DRILL P SURF POH WITH BHA#4 FROM 3,779'TO 3,178'. -PU WT 105K,SO WT 80K. -MONITOR WELL;WELL STATIC. 04:30 - 07:00 2.50 DRILL N RREP 3,178.00 SURF MUD SYSTEM LOW PRESSURE HOLE-FILL LINE PARTED. -CHANGED OUT THREADED NIPPLE. 07:00 - 09:30 2.50 DRILL P SURF POH WITH BHA#4 FROM 3,178'TO 289'. -TIGHT AREAS AT 1,878'-1,791'AND 1,745'; WIPED WITH NO ISSUES. -PU WT 105K,SO WT 80K. -MONITOR WELL;WELL STATIC. 09:30 - 13:00 3.50 DRILL P SURF LD BHA#4. -BIT GRADE:2-2-WT-M-E-I-RG-TD. -CLEAN AND CLEAR RIG FLOOR. 13:00 - 15:00 2.00 CASING P SURF RU TO RIH WITH 9-5/8",40#, L-80, BTC CASING. -PJSM. -MAKE DUMMY RUN WITH FLUTED MANDREL HANGER ON LANDING JT. -RU 9-5/8"CASING HANDLING EQUIPMENT. 15:00 - 20:00 5.00 CASING P SURF RIH WITH 9-5/8".40#.L-80.BTC CASING TO BASE OF PERMAFROST AT 2,023'. -MU SHOE TRACT AND BAKERLOK IT. -MU TQ 8,800 FT-LBS. -CHECK FLOATS;CHECKED GOOD. -FILL EVERY JT ON THE FLY. -BREAK CIRCULATION EVERY 10 JTS. -PU WT 115K,SO WT 87K. 20:00 - 20:30 0.50 CASING P SURF CBU AT THE BASE OF THE PERMAFROST AT 2,023'. -113BBLS. -STAGE PUMPS TO 6 BPM,350 PSI. -RECIPROCATE PIPE 10'-20'. -SOME CLAY AND GRAVEL UNLOADED AT BUS. -MW 9.1 PPG IN AND OUT. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 11 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:30 - 00:00 3.50 CASING P SURF RIH WITH 9-5/8",40#, L-80, BTC CASING FROM 2,023'TO 3,772'. -PU WT 185K,SO WT 110K. 12/7/2010 00:00 - 01:00 1.00 CEMT P SURF PU LANDING JT AND LAND 9-5/8"FLUTED MANDREL HANGER ON BASE FLANGE. -RD FRANKS TOOL AND RU CEMENT HEAD. 01:00 - 03:30 2.50 CEMT P SURF CIRCULATE TO CONDITION MUD AND HOLE FOR CEMENT JOB. -STAGE UP PUMPS IN 1/2-BBL INCREMENTS TO 6 BPM. 03:30 - 04:00 0.50 CEMT P SURF PUMP 50-BBL SPACER BEFORE MUD PUSH II. 04:00 - 07:30 3.50 CEMT P SURF PRIMARY 9-5/8"SURFACE CASING CEMENT JOB. -ONCE LANDED WITH MANDREL HANGER, COULD NOT RECIPROCATE DUE TO WHAT IS C SUSPECTED A COLLAR HANGING UP ON THE BOTTOM OF THE CONDUCTOR. -PJSM WITH SLB CEMENTERS AND CH2MHILL TRUCK DRIVERS/PUSHER. -RU SLB CEMENT LINES. -PUMP 5 BBLS OF 10.0 PPG MUD PUSH II. -SHUT DOWN AND PRESSURE TEST SURFACE EQUIPMENT TO 3,500 PSI; CHECKED GOOD. -PUMP 95 BBLS OF MUD PUSH II AHEAD AT 6 BPM AND 269 PSI. -SHUT DOWN AND DROP BOTTOM PLUG; GOOD TOGGLE INDICATION. -PUMP 493 BBLS OF 10.7 PPG ARCTIC SET LITE LEAD AT 6 BPM AND 275 PSI. -LEAD YIELD--2.33 CU FT/SK,1,188 SKS. -6.5 BPM,302 PSI,291 BBLS LEAD AWAY, BOTTOM PLUG LATCHED AT 870 PSI. -SWAP ON THE FLY AND PUMP 100 BBLS OF 15.8 CLASS G CEMENT AT 5.3 BPM AND 271 PSI. -TAIL YIELD--1.16 CU FT/SK,484 SKS. -5.3 BPM,213 PSI,70 BBLS TAIL AWAY, GOOD CEMENT BACK TO SURFACE. -DROP TOP PLUG(GOOD TOGGLE INDICATION)AND BEGIN DISPLACEMENT AT 8 BPM,300 PSI. -SLOW TO 3 BPM,882 PSI FOR BUMP AT 251 BBLS DISPLACED. -BUMP PLUG AT 279 BBLS DISPLACED AND 1,575 PSI. HOLD AT 500 PSI OVER FOR 5 MINUTES. BLEED OFF PRESSURE AND CHECK FLOATS; FLOATS CHECKED GOOD. TOTAL OF 310 BBLS OF CEMENT BACK TO SURFACE. ***CEMENT IN PLACE AT 0720 HRS.*** 07:30 - 09:30 2.00 CEMT P SURF RD CEMENT HEAD,LANDING JT,STABBING BOARD,AND CASING EQUIPMENT. -CHANGE BAILS. -FLUSH STACK AND BLOW DOWN LINES. 09.30 - 13:30 4.00 BOPSUR P SURF RD 20"RISER AND ND DIVERTER LINE. -ND SURFACE STACK. -REMOVE CASING HANDLING EQUIPMENT FROM RIG FLOOR. Printed 1/28/2011 5:08:39PM North America -ALASKA - BP Page 12 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. I UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:30 - 15:30 2.00 WHSUR P SURF NU CASING SPOOL HEAD AND TUBING SPOOL. -TEST CASING HEAD TO 1,000 PSI FOR 30 MINUTES;TEST GOOD. 15:30 - 17:30 2.00 BOPSUR P SURF NU DSA AND BOP. -RU ANNULAR VALVES. 17:30 - 20:30 3.00 BOPSUR N RREP SURF CUT WASHED-OUT HOLE-FILL LINE NIPPLE OFF BELL NIPPLE AND WELD NEW NIPPLE IN ITS PLACE. 20:30 - 22:30 2.00 BOPSUR P SURF CONTINUE NU BOPS. 22:30 - 23:00 0.50 BOPSUR P SURF RU BOPE TEST EQUIPMENT. 23:00 - 00:00 1.00 BOPSUR P SURF TEST BOPE. -TEST BOPE AND CHOKE MANIFOLD TO 4,000 PSI HIGH AND 250 PSI LOW WITH 4" - TEST JOINT. TEST ANNULAR PREVENTER !' TO 2,500 PSI HIGH AND 250 PSI LOW WITH 4" TEST JOINT. TEST ACCUMULATOR UNIT. -AOGCC REP CHUCK SCHEVE WAIVED WITNESS TO TEST AT 1800 HRS ON 12/7/2010. TEST WITNESSED BY NAD TOURPUSHER LENWARD TOUSSANT AND BP WSLS RAYMOND PLATT AND BRETT ANDERSON. 12/8/2010 00:00 - 03:30 3.50 BOPSUR P SURF CONTINUE TEST BOPE. -TEST BOPE AND CHOKE MANIFOLD TO 4,000 PSI HIGH AND 250 PSI LOW WITH 4" TEST JOINT. TEST ANNULAR PREVENTER TO 2,500 PSI HIGH AND 250 PSI LOW WITH 4" TEST JOINT. TEST ACCUMULATOR UNIT. -AOGCC REP CHUCK SCHEVE WAIVED WITNESS TO TEST AT 1800 HRS ON 12/7/2010. TEST WITNESSED BY NAD TOURPUSHER LENWARD TOUSSANT AND BP WSLS RAYMOND PLATT AND BRETT ANDERSON. 03:30 - 04:00 0.50 BOPSUR P SURF RD BOP TEST EQUIPMENT, PULL TEST PLUG, AND SET WEAR RING. 04:00 - 04:30 0.50 EVAL P SURF PRESSURE TEST 9-5/8"CASING. -TEST TO 3,500 PSI FOR 30 MINUTES;TEST GOOD. -LOST 90 PSI FIRST 15 MINUTES AND 10 PSI LAST 15 MINUTES. 04:30 - 08:00 3.50 DRILL P SURF PU4"DP SINGLES FROM PIPESHED AND RIH TO 2,730'. 08:00 - 09:30 1.50 DRILL P SURF POH FROM 2,730'TO SURFACE RACKING BACK 4"DP STANDS. 09:30 - 12:30 3.00 DRILL P SURF PU BHA#5 TO 723'. -BHA#5 CONSISTS OF 8-3/4"HYCALOG DTX619M-D2 PDC BIT,1.5 DEGREE MUD MOTOR,ARC6,TELESCOPE MWD,NM IBS STABILIZER,2 NM DCS, NM IBS STABILIZER, NM DC, FLOAT SAVER SUB,1 JT 5"HWDP, HYDRAULIC JARS,XO,16 JTS 4"HWDP,62 JTS 4"DP,AND GHOST REAMER AT 2,676'. Printed 1/28/2011 5:08:39PM forth America -ALASKA- BP • Page 13 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE (DON) Start Date: 11/20/2010 End Date: 1X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:30 - 14:30 2.00 DRILL P SURF RIH WITH BHA#5 ON 4"DP SINGLES FROM THE PIPESHED TO 1,193'. -SHALLOW-HOLE TEST MWDAT 400 GPM,900 PSI;TEST GOOD. -CONTINUE RIH WITH BHA#5 ON 4"DP SINGLES FROM PIPESHED TO 3,360'. -RIH WITH BHA#5 ON 4"DP STANDS TO 3,547'. -PU WT 110K,SO WT 73K. -FILL PIPE EVERY 25 STANDS. 14:30 - 15:00 0.50 DRILL P SURF CUT AND SLIP 128'OF DRILLING LINE. 15:00 - 15:30 0.50 DRILL P SURF SERVICE.TOP DRIVE,BLOCKS, DRAWWORKS,AND CROWN. 15:30 - 18:00 2.50 DRILL P SURF DRILL 9-5/8"SHOE TRACT. -RIH WASHING DOWN FROM 3,547'AND TAG UP ON FLOAT COLLAR ON DEPTH AT 3,684'. DRILL PLUGS AND CEMENT TO 3,760'. -350 GPM,1,185 PSI. -40 RPM. -6K TQ ON,5K TQ OFF. -10-15K WOB(INDICATIVE OF SOLID CEMENT IN SHOE TRACT). -ROT WT 90K. 18:00 - 18:30 0.50 DRILL P SURF DISPLACE WELL FROM 9.1 PPG MAX DRILL-N MUD TO 8.8 PPG LSND. 18:30 - 19:30 1.00 DRILL P SURF PERFORM WELL KILL(D5)AND STRIPPING (D6)DRILLS WITH JOHNSTON'S CREW. 19:30 - 20:30 1.00 DRILL P SURF DRILL CEMENT,FLOAT SHOE,AND 20'OF NEW FORMATION TO 3,799'. -550 GPM,1,330 PSI. -40 RPM. -4.5K TQ. -PU WT 115K,SO WT 77K,ROT WT 90K. 20:30 - 21:00 0.50 DRILL P SURF CBU. -228 BBLS,550 GPM,1,380 PSI. -MONITOR WELL;WELL STATIC. -MW 8.8 PPG IN AND OUT. l 21:00 - 22:00 1.00 DRILL P SURF PERFORM LOT TO 560 PSI. -12 15 PPG EMW. 22:00 - 23:30 1.50 DRILL N WAIT 3,799.00 SURF CONSULT WITH TOWN ON LOT RESULTS. -CIRCULATE AT 779 BBLS,550 GPM,1,350 PSI. -40 RPM. -4.5K TQ. 23:30 - 00:00 0.50 DRILL P INTI DRILL AHEAD IN 8-3/4"INTERMEDIATE HOLE FROM 3,799'TO 3,923'. -15K WOB. -60 RPM. -550 GPM,1,500 PSI ON,1,350 PSI OFF. -5K TQ ON,4.5K TQ OFF. -PU WT 115K,SO WT 82K,ROT WT 90K. -CALC ECD 9.19 PPG,ACT ECD 9.22 PPG. -ART.57,ADT.57. -MW 8.8 PPG IN AND OUT. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 14 of 31 Operation Summary Report Common Well Name: S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Firs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/9/2010 00:00 - 12:00 12.00 DRILL P INTI DRILL AHEAD IN 8-3/4"INTERMEDIATE HOLE FROM 3,923'TO 5,895'. -15-30K WOB. -100 RPM. -585 GPM,2,420 PSI ON,2,220 PSI OFF. -7.3K TQ ON,6.1K TQ OFF. -PU WT 125K,SO WT 94K, ROT WT 108K. -CALC ECD 9.33 PPG,ACT ECD 10.11 PPG. -AST.89,ART 4.5,ADT 5.39. -UTILIZE HI-VIS SWEEPS TO COMBAT HIGH ECDS. -MW 8.9 PPG IN AND OUT. 12:00 - 00:00 12.00 DRILL P INTI DRILL AHEAD IN 8-3/4"INTERMEDIATE HOLE FROM 5,895'TO 7,493'. -20-30K WOB. -100 RPM. -585 GPM,3,210 PSI ON,2,740 PSI OFF. -9K TQ ON,6.5K TQ OFF. -PU WT 147K,SO WT 108K,ROT WT 122K. -CALC ECD 9.36 PPG,ACT ECD 10.29 PPG. -AST 2.35,ART 3.28,ADT 5.63. -UTILIZE HI-VIS SWEEPS TO COMBAT HIGH ECDS AND WALNUT SWEEPS FOR BIT BALLING. -AT 1330 HRS, FLOW PADDLE FROM 44%TO 48%;SHUT DOWN PUMPS AND MONITOR WELL(CHURNING IN THE RISER, BUT FLUID LEVEL DROPPING SLIGHTLY);CBU AT 585 GPM,2,315 PSI;AFTER 5 MINUTES,FLOW PADDLE BACK TO NORMAL. -MW 9.1 PPG IN AND OUT. -CREW PERFORMED A KICK WHILE DRILLING(D2)DRILL. 12/10/2010 00:00 - 12:00 12.00 DRILL P INTI DRILL AHEAD IN 8-3/4"INTERMEDIATE HOLE FROM 7,493'TO 8,433'. -15-25K WOB. -100 RPM. -550 GPM,3,760 PSI ON,3,498 PSI OFF. -10.2K TQ ON,8.2K TQ OFF. -PU WT 150K,SO WT 107K,ROT WT 130K. -CALC ECD 11.13 PPG,ACT ECD 11.94 PPG. -AST 3.66,ART 2.75,ADT 6.41. -UTILIZE HI-VIS SWEEPS TO COMBAT HIGH ECDS AND WALNUT SWEEPS FOR CLEANING CLAYS FROM BHA. -SPIKE MW FROM 9.2 PPG TO 10.7 PPG WHILE DRILLING AHEAD FROM 8,150'TO 8,245'IN PREPARATION FOR DRILLING THE HRZ. -MW 10.7 PPG IN AND OUT. Printed 1/28/2011 5:08.39PM North America -ALASKA- BP Page 15 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 00:00 12.00 DRILL P INTI DRILL AHEAD IN 8-3/4"INTERMEDIATE HOLE FROM 8,433'TO 8,904'. -15-25K WOB. -100 RPM. -565 GPM,4,015 PSI ON,3,840 PSI OFF. -9K TQ ON,7K TQ OFF. -PU WT 170K,SO WT 110K,ROT WT 130K. -CALC ECD 11.12 PPG,ACT ECD 12.10 PPG. -AST 5.25,ART 2.43,ADT 7.68. -UTILIZE HI-VIS SWEEPS TO COMBAT HIGH ECDS AND WALNUT SWEEPS FOR CLEANING CLAYS FROM BHA. -MW 10.7 PPG IN AND OUT. 12/11/2010 00:00 - 02:30 2.50 DRILL P INTI DRILL AHEAD IN 8-3/4"INTERMEDIATE HOLE FROM 8,904'TO INTERVAL TD AT 9,127'. -15-25K WOB. -100 RPM. -538 GPM,3,960 PSI ON,3,850 PSI OFF. -8.4K TQ ON,6.9K TQ OFF. -PU WT 170K,SO WT 111K,ROT WT 130K. -CALC ECD 11.16 PPG,ACT ECD 12.16 PPG. -ART 1.56,ADT 1.56. -UTILIZE HI-VIS SWEEPS TO COMBAT HIGH ECDS AND WALNUT SWEEPS FOR CLEANING CLAYS FROM BHA. -MW 10.7 PPG IN AND OUT. 02:30 - 03:00 0.50 DRILL P INTI CBU FOR SAMPLES AT TD. -SAMPLES SHOWED SANDSTONE INDICATIVE OF HAVING DRILLED INTO THE C4 SAND IN THE KUPARUK AND GEOS CALLED TD AT 9,127'. -564 GPM,3,988 PSI. -125 RPM. -7.5K TQ. -MW 10.7 PPG IN AND OUT. 03:00 - 05:30 2.50 DRILL P INTI CBU X 3. -UTILIZE 45-BBL HI-VIS SWEEP TO COMBAT HIGH ECD. -CIRCULATE UNTIL ACT ECD IS—.7 PPG ABOVE CALC ECD. -564 GPM,3,988 PSI. -125 RPM. -7.5K TQ. -MW 10.7 PPG IN AND OUT. -MONITOR WELL;WELL STATIC. 05:30 - 12:00 6.50 DRILL P INTI BACKREAM OUT OF THE HOLE FROM 9,127' TO 7,100'. -550 GPM,3,450 PSI. -110 RPM. -7K TQ. -MW 10.7 PPG IN AND OUT. -HOLE UNLOADED CLAY BALLS AND ECDS FELL. 12:00 - 14:30 2.50 DRILL P INTI BACKREAM OUT OF THE HOLE F/7,100' T/6,440'(GHOST REAMER IN 9-5/8"SHOE). -550 GPM,3,100 PSI. -100 RPM. -6K TQ. -PU WT 135K,SO WT 98K,ROT WT 106K. -MW 10.7 PPG IN AND OUT. -HOLE UNLOADED CLAY BALLS AND ECDS FELL. Printed 1/28/2011 5:08:39PM Vorth America -ALASKA- BP Page 16 of 31 • Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:30 - 16:30 2.00 DRILL P INTI BACKREAM OUT OF THE HOLE F/6,440' T/6,177'WHILE CBU X 3. -550 GPM,3,000 PSI. -100 RPM. -6KTQ. -PU WT 135K,SO WT 97K,ROT WT 105K. -MW 10.7 PPG IN AND OUT. HOLE UNLOADED CLAY BALLS AND ECDS FELL. 16:30 - 17:30 1.00 DRILL P INTI BACKREAM OUT OF THE HOLE FROM 6,177' TO 5,895'. -550 GPM,2,900 PSI. -100 RPM. -6K TQ. -PU WT 130K,SO WT 90K,ROT WT 105K. -MW 10.7 PPG IN AND OUT. -HOLE UNLOADED CLAY BALLS AND ECDS FELL TO.2 PPG ABOVE CALC ECD. 17:30 - 20:00 2.50 DRILL P INTI BACKREAM OUT OF THE HOLE FROM 5,895' TO 5,425'. -284 GPM,985 PSI. -100 RPM. -6K TQ. PU WT 125K,SO WT 90K,ROT WT 104K. -MW 10.7 PPG IN AND OUT. -DOWN TO ONE PUMP DUE TO LOSS OF SWAB ON MUD PUMP#2, POD 3. -HOLE CLEANED UP AND STOPPED UNLOADING CLAY BALLS. 20:00 - 21:30 1.50 DRILL P INTI POH WITH BHA#5 FROM 5,425'TO 9-5/8" SHOE AT 3,772'. -MONITOR WELL BEFORE STARTING TO POH;SEEPAGE LOSSES<1 BPH. 21:30 - 22:00 0.50 DRILL P INTI PUMP DRY JOB AND BLOW DOWN TOP DRIVE. -MW 10.7 PPG IN AND OUT. 22:00 - 00:00 2.00 DRILL P INTI POH WITH BHA#5 FROM 3,772'TO START OF BHA#5 AT 732'. -MONITOR WELL AT BHA#5;WELL STATIC. -MW 10.7 PPG IN AND OUT. 12/12/2010 00:00 - 03:30 3.50 DRILL P INTI POH AND LD BHA#5. -BIT GRADE: 1-2-CT-A-X-I-WT-TD. -CLEAN AND CLEAR RIG FLOOR. 03:30 - 05:30 2.00 CASING P INTICHANGE O_UT TOP VBRS TO 7"FIXED RAMS. -PULL WEAR RING AND INSTALL TEST PLUG. -RU TEST EQUIPMENT. p -PRESSURE TEST WITH 7"TEST JT TO 250 11 PSI LOW AND 4,000 PSI HIGH;TEST GOOD. -PULL TEST PLUG. -RD TEST EQUIPMENT. -LD TEST JT. 05:30 - 08:00 2.50 CASING P INTI RU TO RIH WITH 7",26#, L-80, BTC-M(71 JTS) AND TC-II(148 JTS)CASING. -MAKE DUMMY RUN WITH 7"FLUTED MANDREL HANGER. -RU POWER TONGS, FRANKS FILL-UP TOOL, 350-TON SLIPS AND SPIDERS,SINGLE-JOINT ELEVATORS,AND APPROPRIATE FLOOR SAFETY VALVES. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 17 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) I Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:00 - 14:30 6.50 CASING P INTI RIH WITH 7" 26# L-80 BTC-M 71 JTS TOTAL CASING TO 2,877'. -MU AND BAKERLOK SHOE TRACT AND RIH. -FILL PIPE AND CHECK FLOATS;CHECKED GOOD. -9K FT-LBS MU TQ. -FILL EVERY JT AND BREAK CIRCULATION EVERY 20 JTS. -3 BPM,390 PSI. -PU WT 100K,SO WT 85K. 14:30 - 17:00 2.50 CASING P INTI RIH WITH 7",26#, L-80,TC-II(148 JTS TOTAL) CASING FROM 2,877'TO 3,772'. rI -TORQUE TURN CONNECTIONS;10.1K rGS�] FT-LBS OPTIMUM MU TQ. -FILL EVERY JT AND BREAK CIRCULATION EVERY 20 JTS. -3 BPM,390 PSI. 17:00 - 19:00 2.00 CASING P INTI CIRCULATE 1.5 CASING VOLUMES AT 9-5/8" SHOE. -295 BBLS. -STAGE PUMPS TO 6 BPM,630 PSI. -PU WT 120K,SO WT 95K. -MONITOR WELL;WELL STATIC. -MW 10.7 PPG IN AND OUT. 19:00 - 00:00 5.00 CASING P INTI RIH WITH 7",26#, L-80,TC-I1(148 JTS TOTAL) CASING FROM 3,772'TO 6,180'. -TORQUE TURN CONNECTIONS;10.1K FT-LBS OPTIMUM MU TQ. -FILL EVERY JT AND BREAK CIRCULATION EVERY 20 JTS. -PU WT 170K,SO WT 100K. / 12/13/2010 00:00 - 01:30 1.50 CASING P INTI RIH WITH 7",26#, L-80,TC-II(148 JTS TOTAL) ✓ CASING FROM 6,180'TO 6,346'. -TORQUE TURN CONNECTIONS;10.1K FT-LBS OPTIMUM MU TQ. -FILL EVERY JT AND BREAK CIRCULATION EVERY 20 JTS. -PU WT 173K,SO WT 113K. 01:30 - 02:30 1.00 CASING N HMAN 6,346.00 INTI DROPPED CASING TONG FORWARD/REVERSE PIN DOWNHOLE. -TC-II JT 82 DID NOT MU PROPERLY THE FIRST TIME. -AFTER BACKING IT OFF TO CHECK IT OUT, CASING AND RIG FLOOR HAND WERE WORKING TO TQ IT BACK UP WHEN CASING HAND DROPPED PIN DOWNHOLE. -PIN IS 5"LONG AND HAS 1-1/8"WASHER SEPARATING 1/2"PIN END AND 3/4"HANDLE. -DRAINED STACK AND LOOKED FOR PIN IN BOP PROFILES AND AT BOTTOM OF STACK; PIN NOT FOUND. -DECISION MADE WITH DAY WSL CONCURRENCE TO CONTINUE RIH;WILL HAVE EMERGENCY SLIPS AVAILABLE ON SITE. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 18 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:30 - 08:30 6.00 CASING P INTI RIH WITH 7",26#, L-80,TC-II(148 JTS TOTAL) CASING FROM 6,346'TO 9,117'. -TORQUE TURN CONNECTIONS;10.1K FT-LBS OPTIMUM MU TQ. -FILL EVERY JT AND BREAK CIRCULATION EVERY 20 JTS. -CIRCULATE 1.5 BUS AT THRZ AT 8,723'; STAGE UP TO 5 BPM,843 PSI. -LANDED HANGER ON DEPTH AT 9,117'. -PU WT 240K,SO WT 130K. 08:30 - 09:30 1.00 CEMT P INTI RD FRANKS FILL-UP TOOL AND RU CEMENT HEAD AND LINE. 09:30 - 10:30 1.00 CEMT P INTI CIRCULATE AND CONDITION MUD FOR 7" CASING PRIMARY CEMENT JOB. -STAGE PUMPS UP TO 5.5 BPM,908 PSI. -RECIPROCATE PIPE IN 12'-15'STROKES THROUGH CIRCULATION AND CEMENT JOB THROUGH 4,500 STROKES OF RIG DISPLACEMENT(5,822 STROKES). ✓ -PU WT 230K,SO WT 125K. 10:30 - 13:30 3.00 CEMT P INTI 7"CASING CEMENT JOB. -PUMPED 5 BBLS 10.8 PPG MUD PUSH II. -PRESSURE TESTED SURFACE LINES TO 250 PSI LOW AND 4,000 PSI;TEST GOOD. -PUMPED 30 BBLS 10.8 PPG MUD PUSH II AT 3 BPM. -DROP BOTTOM PLUG. ^� -PUMPED 117 BBLS 11.0 PPG LITE CRETE CA" CEMENT AT 6-8 BPM. -366 SKS,1.83 CU FT/SK YIELD. -PUMPED 39 BBLS 15.8 PPG CLASS G CEMENT AT 5-6 BPM. -189 SKS,1.16 CU FT/SK YIELD. -DROP TOP PLUG. -DISPLACED WITH 10 BBLS OF 8.3 PPG CLEAN-UP WATER FROM SLB TRUCK AND 336 BBLS OF 10.7 PPG LSND FROM RIG. -BUMPED PLUGS. -PRESSURE TEST 7"_CASI.NG_I0..4.000 PSI FOR 30 MIN;GOOD TEST. -BLED OFF AND CHECKED FLOATS;FLOATS HELD. ***CEMENT IN PLACE AT 1240 HRS.*** 13:30 - 15:00 1.50 CEMT P INTI RD CASING RUNNING EQUIPMENT AND CHANGE OUT BAILS ON THE TOP DRIVE. 15:00 - 18:30 3.50 WHSUR P INTI INSTALL AND TEST 7"PACKOFF. - -PREP CELLAR AND WELLHEAD FOR PACKOFF CHANGE OUT. -FMC WELL HEAD TECH INSTALLED AND RAN IN THE LOCK-DOWN SCREWS ON THE 7" R . -PRESSURE PUTESTED PACKOFF TO 250 PSI ✓ LOW FOR 5 MIN AND 5,000 PSI HIGH FOR 30 CHARTED MINUTES;GOOD TEST. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 19 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:30 - 21:00 2.50 BOPSUR P INTI CHANGE OUT AND TEST UPPER PIPE RAMS._ -INSTALLED TEST PLUG TO PREVENT DEBRIS FROM FALLING DOWNHOLE. -RAN A FLEXIBLE BORESCOPE INTO THE BOPE STACK TO CHECK RAM CAVITIES FOR ANY SIGNS OF THE MISSING POWER TONG ✓ FORWARD/REVERSE PIN. -FQUN I THE PIN SITTING INSIDE THE UPPER PIPE RAM CAVITY. 0 -CHANGED OUT THE UPPER PIPE RAMS FROM 7"FIXED TO 3-1/2"X 6"VARIABLE BORE RAMS. RECOVERED THE TONG PIN IN THE PROCESS. -PRESSURE TESTED UPPER PIPE RAMS TO 250 PSI LOW AND 4,000 PSI HIGH FOR 5 CHARTED MINUTES EACH. SIMOPS: BEGAN INJECTING 10.7 PPG LSND ON THE OA. -PUMPED 14 BBLS. -29 GPM AT 810 PSI. -CONTINUE TO PUMP 2 BBLS DOWN THE OA EVERY HOUR. 21:00 - 21:30 0.50 BOPSUR P INTI INSTALLED THE 7-1/8"ID WEAR RING. 21:30 - 00:00 2.50 DRILL P INTI PU AND MU BHA#6 FOR 6-1/8"BUILD SECTION. -6-1/8"HUGHES"EP7258"INSERT BIT JETTED 3X13;7/8,3.0 STAGE,SHORT PAK MOTOR WITH 2°BEND;5.88"STABILIZER;PONY FLEX DC; IMPULSE MWD (IIFR-MS/GR/RES/INCLINATION); NM XO;3 NM FLEX DCS;WELL COMMANDER BALL CATCHER;WELL COMMANDER CIRC SUB; XO; HYDRAULIC JARS;AND 4"DRILL PIPE. -CONTINUE TO INJECT 10.7 PPG LSND DOWN THE OA. -PUMPED A TOTAL OF 24 BBLS. -66 GPM AT 510 PSI. 12/14/2010 .00:00 - 01:30 1.50 DRILL P INTI CONTINUE TO PU AND MU BHA#6 FOR 6-1/8" BUILD SECTION TO 204'. -6-1/8"HUGHES"EP7258"INSERT BIT JETTED 3X13,7/8,3.0 STAGE;SHORT PAK MOTOR WITH 2°BEND;5.88"STABILIZER;PONY FLEX DC; IMPULSE MWD (IIFR-MS/GR/RES/INCLINATION); NM XO;3 NM FLEX DCS;WELL COMMANDER BALL CATCHER;WELL COMMANDER CIRC SUB; XO; HYDRAULIC JARS;AND 4"DRILL PIPE. -CONTINUE TO INJECT 10.7 PPG LSND DOWN THE OA. -PUMPED A TOTAL OF 106 BBLS. 116 GPM AT 480 PSI. • Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 20 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:30 - 03:30 2.00 DRILL P INTI RIH WITH 6-1/8"BUILD BHA TO 1,613'. -PICKING UP SINGLE JOINTS OF 4"DP FROM THE PIPE SHED. -RIH TO 1,613'AND SHALLOW TEST MWD; 200 GPM AND 500 PSI. FREEZE PROTECT THE 9-5/8"X 7"OUTER ANNULUS. -PJSM AND RIG UP LITTLE RED HOT OIL TO OA. -PRESSURE TEST LINES TO 250 PSI LOW AND 1,000 PSI HIGH. -PUMPED 68 BBLS OF 80 DEG. F DEAD CRUDE DOWN THE OA. -126 GPM AT 704 PSI. 03:30 - 04:00 0.50 DRILL P INTI PERFORMED A WELL-KILL DRILL(D5)AND A STRIPPING DRILL(D6)WITH RIG CREW. 04:00 - 06:00 2.00 DRILL P INTI CONTINUE TO RIH WITH 6-1/8"BUILD BHA ON 4"DP FROM 1,613'TO 3,777'. -PICKING UP SINGLES FROM THE PIPE SHED FROM 1,613'TO 4152'. 06:00 - 08:30 2.50 DRILL P INTI RIH FROM 4152'TO 8943'MD. -155K PUW,85K SOW 08:30 - 10:30 2.00.... DRILL P INTI WASH DOWN FROM 8943'MD AT 243 GPM AND 2640 PSI. 5K WOB. TAGGED FLOAT COLLAR ON DEPTH. REAM DOWN TO 10' ABOVE SHOE AT 9107'MD 10:30 - 11:00 0.50 DRILL P INTI DROP 1.76"BALL AND PUMP DOWN AT 2 BPM AT 1075 PSI. BALL ON SEAT WITH 40 BBLS PUMPED. OPEN CIRC SUB WITH 2800 PSI 11:00 - 14:00 3.00 DRILL P INTI DISPLACE WELL TO 10.2 PPG QUICKDRILL MUD AT 251 GPM AND 1320 PSI 14:00 - 20:00 6.00 DRILL N HMAN 9,107.00 INTI WEIGHT MUD SYSTEM UP FROM 9.9 PPG TO 10.2 PPG QUICKDRILLN MUD DUE TO AN UPDATED PORE PRESSURE PREDICTION CHART THAT INDICATES A POTENTIAL NEED FOR THE HIGHER MUD WEIGHT. 20:00 - 20:30 0.50 DRILL P INTI DROP 1.76"BALL AND CLOSE CCV WITH 2460 PSI. SLOW PUMP RATES TAKEN / 20:30 - 22:00 1.50 DRILL P INTI DRILL OUT CEMENT AND SHOE TRACK FROM 9107'TO 9116'MD AND RAT HOLE FROM 9116' TO 9127'MD. DRILL AHEAD IN 6-1/8" PRODUCTION HOLE FROM 9127'TO 9150'MD -250 GPM,1950 PSI ON,1890 PSI OFF -150K PUW,110K SOW 22:00 - 23:00 1.00 DRILL P INTI CIRCULATE BOTTOMS UP AT 250 GPM AND 1870 PSI. 10.2 PPG MW IN AND OUT SLOW PUMP RATES TAKEN 23:00 - 00:00 1.00 DRILL P INTI RI I PFRFORM FORMATION INTEGRATY TEST _ TO 11.5 PPG EMW. 460 PSI AT 9117'MD/6822' ND WITH 10.2 PPG MW. 12/15/2010 00:00 03:30 3.50 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 9150'TO 9265'MD -250 GPM,1950 PSI ON,1890 PSI OFF -10-20K WOB -150K PUW,110K SOW Printed 1/28/2011 5:08:39PM A � North America -ALASKA- BP Page 21 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual©66.66ft(above Mea_n Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:30 - 04:30 1.00 DRILL P PROD1 CIRCULATE 30 BBLS HI VIS SWEEP SURFACE TO SURFACE WITH RECIPRICATING PIPE 04:30 - 06:00 1.50 DRILL P PROD1 MONITOR WELL,10.2 PPG MW IN AND OUT. PUMP OUT OF HOLE AT 250 GPM AND 1900 PSI. FROM 9265'TO 9117'MD. DROP BALL AND OPEN CCV WITH 2400 PSI. CBU 1X AT 585 GPM AND 2800 PSI. MONITOR WELL, STATIC. 10.2 PPG MW IN AND OUT. PUMP DRY JOB AND BLOW DOWN TOP DRIVE. SLOW PUMP RATES TAKEN 06:00 - 10:30 4.50 DRILL P PROD1 POOH FROM 9117'TO BHA AT 203'MD. DROP 1.76"BALL AND PUMP DOWN TO CLOSE CCV. CLOSE CCV WITH 2250 PSI KICK WHILE TRIPPING DRILL(D1) 10:30 - 11:30 1.00 DRILL P PROD1 MONITOR WELL,STATIC. PJSM, LD BHA#6. HUGHES EP7258 BIT GRADED: 1-1-WT-A-E-I-NO-BHA 11:30 - 12:00 0.50 DRILL P PROD1 CLEAN AND CLEAR RIG FLOOR, FUNCTION TEST RAMS 12:00 - 14:30 2.50 DRILL P PROD1 MONITOR WELL STATIC. PU BHA 6-1/8" PRODUCTION BHA#7: HYCALOG MSF513D-B1C BIT,AIM AD MOTOR, IMPULSE MWD,ADN4,CCV. 14:30 - 15:00 0.50 DRILL P PROD1 RIH FROM 233'TO 1172'MD. 55K PUW,50K SOW 15:00 - 16:00 1.00 DRILL P PROD1 SERVICE TOP DRIVE. CHANGE GRIPPER DIES 16:00 - 20:00 4.00 DRILL P PROD1 SHALLOW HOLE TEST MWD AT 252 GPM ND 1400 PSI. RIH FROM 1172 TO 9067'MD. 150K PUW,112K SOW 20:00 - 21:00 1.00 DRILL P PROD1 CUT AND SLIP 118'OF DRILLING LINE, INSPECT BRAKES/DRAWWORKS,MONITOR WELL,STATIC. 10.2 PPG MW IN AND OUT. 21:00 - 21:30 0.50 DRILL P PROD1 RIH FROM 9067'TO 9160'MD,WASH DOWN FROM 9160'TO 9265'AT 250 GPM AND 2170 PSI. NO FILL ON BOTTOM 21:30 - 23:00 1.50 DRILL P PROD1 MAD PASS AT 300'/HR FROM 9265'TO 9150' MD. -250 GPM,2170 PSI RIH FROM 9150'TO 9265'MD SLOW PUMP RATES TAKEN 23:00 - 00:00 1.00 DRILL P PROD1 SLIDE DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 9265'TO 9291'MD. -250 GPM,2215 PSI ON,2150 PSI OFF -10-20K WOB -150K PUW,110K SOW KICK WHILE DRILLING DRILL(D2) Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 22 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/16/2010 00:00 - 12:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 9291'TO 9575'MD. BUILD FROM 89 DEG TO 94 DEG INC AND TURN FROM 199 DEG TO 192 AZM. DRILL FROM 9575'TO 9913 DROPPING TO 85 DEG INC AND TURNING TO 214 DEG AZM -250 GPM,2810 PSI ON,2500 PSI OFF -80 RPM,10.1K TQ ON,8.8K TQ OFF -10-20K WOB -173K PUW,150K SOW,119K RTW FIRE DRILL 12:00 - 00:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 9913'TO 10547'MD. CONTINUE TO DROP FROM 85 DEG TO 79 DEG INC AND TURN FROM 214 DEG TO 237 AZM. -250 GPM,2580 PSI ON,2430 PSI OFF -80 RPM,11.2K TQ ON,9K TQ OFF -10-20K WOB -190K PUW,90K SOW,115K RTW FIRE AND SPILL DRILL 12/17/2010 00:00 - 12:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 10547'TO 10639'MD. CONTINUE TO DROP FROM 85 DEG TO 77 DEG INC AND TURN FROM 234 DEG TO 240 AZM. BUILD TO 93 DEG INC AND TURN TO 226 DEG AZM FROM 10639'TO 10921'MD -250 GPM,2840 PSI ON,2560 PSI OFF -80 RPM,12K TQ ON,9K TQ OFF -10-20K WOB -205K PUW,90K SOW,110K RTW SLOW PUMP RATES TAKEN SPILL DRILL -_ 12:00 - 00:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 10921'TO 11385'MD. CONTINUE TO DROP FROM 85 DEG TO 77 DEG INC AND TURN FROM 234 DEG TO 240 AZM. BUILD TO 93 DEG INC AND TURN TO 226 DEG AZM FROM 10639'TO 10921'MD -250 GPM,2720 PSI ON,2515 PSI OFF -80 RPM,12.5K TQ ON,10.5K TQ OFF -10-20K WOB -215K PUW,83K SOW,115K RTW SLOW PUMP RATES TAKEN MAN DOWN DRILL 12/18/2010 00:00 - 12:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 11385'TO 12140'MD. -250 GPM,2720 PSI ON,2565 PSI OFF -100 RPM,12.5K TQ ON,11K TQ OFF -10-20K WOB -223K PUW,78K SOW,112K RTW SLOW PUMP RATES TAKEN SPILL DRILL Printed 1/28/2011 5:08:39PM Vorth America -ALASKA- BP Page 23 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 18:30 6.50 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 12140'TO TD AT 12420'MD. -250 GPM,2660 PSI ON,2540 PSI OFF -100 RPM,12K TQ ON,11K TQ OFF -10-20K WOB -225K PUW,80K SOW,112K RTW KICK WHILE DRILLING DRILL(D2) 18:30 - 20:00 1.50 DRILL P PROD1 CBU 1X FOR SAMPLES AND CONFIRM TD. BACKREAM OUT OF HOLE FROM 12420'TO 12330'MD. RECIPRICATE PIPE FROM 12330' TO 12263'MD -100 RPM,11KTQ fi -250 GPM,2500 PSI 20:00 - 00:00 4.00 DRILL P PROD1 BACKREAM OUT OF HOLE FROM 12263'TO 11604'MD. MAD PASS AT 600 FT/HR FROM 12040'TO 11604'AND 400 FT/HR FROM 12185'- 12035';11735'-11604'; -250 GPM,2430 PSI -100 RPM,10K TQ -215K PUW,75K SOW 12/19/2010 00:00 - 02:00 2.00 DRILL P PROD1 MAD PASS OUT OF HOLE FROM 11604'TO 10940'MD. -250 GPM, 2430 PSI -100 RPM,10.5K TQ 02:00 - 12:00 10.00 DRILL N DPRB 10,940.00 PROD1 DRILL STRING PACKING OFF AND TORQUING UP AT 10940'MD. WORK PIPE DOWN TO 11048'AND UNABLE TO ESTABLISH CIRCULATION OR ROTATE. WORK DOWN TO 11416',WORK PIPE WITH AND WITHOUT ROTATION TO REGAIN CIRCULATION. STAGE PUMPS UP TO 210 GPM AND 1360 PSI. CONTINUE TO TORQUE UP AND PACKOFF WHILE BRINGING UP PUMPS -80 RPM,7-9K TQ -205K PUW,75K SOW,120K RTW. 12:00 - 00:00 12.00 DRILL P PROD1 CONTINUE TO STAGE PUMPS UP TO 250 GPM. RECIPRICATE FROM 11360'TO 11416' MD. BACKREAM HOLE FROM 11416'TO 10935'MD. WORK TIGHT SPOTS FROM 10935' TO 10916'MD, PACKING OFF AND TORQUE UP WHEN ATTEMPTING TO CIRCULATE. CONTINUE TO BACK REAM TO 10670'MD. TORQUE UP AND PACKOFF. STAGE PUMPS UP TO 42 GPM AND 579 PSI WHILE ROTATING 50 RPM,7.6K TQ AND RECIPRICATING PIPE 30'. -125K PUW,90K SOW,120K RTW 12/20/2010 00:00 - 03:00 3.00 DRILL P PROD1 CONTINUE TO STAGE PUMPS UP TO 125 GPM AND 1033 PSI WHILE ROTATING 50 RPM,7.6K TQ AND RECIPRICATING PIPE 30'. PACKING OFF AND TORQUING UP,WORK PIPE AND PUMPS. ATTEMPT TO STAGE UP AGAIN AND CONTINUE TO PACK OFF AND TORQUE UP. 03:00 - 04:30 1.50 DRILL P PROD1 PUMP OUT OF HOLE FROM 10670'TO 10285' MD -32 GPM,500 PSI -148K PUW Printed 1/28/2011 5:08:39PM Vorth America -ALASKA- BP Page 24 of 31 • Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 04:30 - 09:00 4.50 DRILL P PROD1 MAD PASS HOLE FROM 10285 TO 9500'MD. -32 GPM,500 PSI -30 RPM,7-8K TQ -125K RTW 09:00 11:00 2.00 DRILL P PROD1 PUMP OUT OF HOLE THROUGH BUILD SECTION FROM 9500'TO 9067'MD. -.30 GPM,470 PSI -140K PUW,105K SOW 11:00 - 12:30 1.50 DRILL P PROD1 DROP 1.76"BALL AND CIRCULATE DOWN AT 2 BPM AND 630 PSI. OPEN CCV AT 2510 PSI. CIRCULATE 50 BBL SWEEP ABOUND. -250 GPM,1085 PSI -80 RPM,6K TQ -120K RTW 12:30 - 13:00 0.50 DRILL P PROD1 MONITOR WELL,STATIC. 10.2 PPG MW IN AND OUT. PUMP DRY JOB AND REMOVE BLOWER HOSE. BLOW DOWN TOP DRIVE 13:00 - 17:30 4.50 DRILL P PROD1 POOH FROM 9067'TO 327'MD. MONITOR WELL,STATIC. 10.2 MW IN AND OUT. DROP 1.76"BALL AND CLOSE CCV WITH 1828 PSI. 17:30 - 20:00 2.50 DRILL P PROD1 LD BHA AND REMOVE RA SOURCE. HYCALOG MSF513D-B1C BIT GRADED: 1-1-BT-X-I-N P-TD. 20:00 - 21:30 1.50 DRILL P PROD1 'PU TEST TOOLS AND RU TO TEST BOPE. 11411° 21:30 - 00:00 2.50 DRILL P PROD1 PRESSURE TEST BOPE.CHOKE MANIFOLD AND TIW VALVE WITH 4"AND 4.5"TEST (�O� JOINTS TO 4000 PSI. TEST ANNULAR PREVENTER TO 2500 PSI WITH 4"TEST JOINT. AOGCC REP JEFF JONES WAVIED WITNESS TO TEST. TEST WITNESSED BY WSL RYAN CIOLKOSZ AND NAD TOOLPUSHER BIFF PERRY 12/21/2010 00:00 - 02:00 2.00 DRILL P PROD1 CONTINUE TO TEST BOPE TO 4000 PSI WITH 4"AND 4.5"TEST JOINT. 02:00 - 03:00 1.00 DRILL P PROD1 RD BOPE TEST EQUIPMENT. RU TO RUN CLEAN OUT BHA 03:00 - 04:00 1.00 DRILL N DPRB PROD1 PU CLEAN OUT BHA(#8)WITH 6-1/8"RERUN HUGHES EP7258 BIT, NEAR BIT FULL GAUGE STABILIZERS, FLEX DRILL COLLAR,6" STABILIZER PONY FLEX COLLAR,5.88" STABILIZER, FLEX DRILL COLLAR AND HYDRALIC JARS 04:00 - 07:30 3.50 DRILL N DPRB PROD1 RIH FROM 117'TO 9045'MD. -160K PUW,100K SOW 07:30 - 08:00 0.50 DRILL N DPRB PROD1 SERVICE TOP DRIVE,BLOCKS AND CROWN. 08:00 - 09:30 1.50 DRILL N DPRB PROD1 TAKE SLOW PUMP RATES STAGE UP PUMPS TO 420 GPM AND 1980 PSI. -100 RPM,7K TQ,110 RTW CIRCULATE 30 BBLS EP LUBE PILL AROUND. TORQUE REDUCED TO 5.5K 09:30 - 10:00 0.50 DRILL N DPRB PROD1 RIH FROM 9045'TO 9421'MD 10:00 - 11:00 1.00 DRILL N DPRB PROD1 STAGE UP PUMPS TO 420 GPM AND 2050 PSI -100 RPM,6.5K TQ,108 RTW BACK REAM FROM 9421 TO 9117'MD 11:00 - 12:00 1.00 DRILL N DPRB PROD1 CIRCULATE AND CONDITION. 1.5X BOTTOMS UP AT 420 GPM AND 1940 PSI Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 25 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 13:00 1.00 DRILL N DPRB PROD1 RIH FROM 9117 TO 10455'MD. WORK THROUGH TIGHT SPOT AT 10353'MD WITHOUT ROTATION OR CIRCULATION. TIGHT AT 10455'MD 13:00 - 15:30 2.50 DRILL N DPRB PROD1 ESTABLISH CIRCULATION AND WORK PUMPS UP TO 152 GPM. PACKING OFF AT RATES ABOVE 152 GPM. WORK PIPE FROM 10450' TO 10500'MD AT 152 GPM AND 820 PSI. -31 RPM,7K TQ 15:30 - 17:00 1.50 DRILL N DPRB PROD1 PUMP OUT OF HOLE FROM 10450'TO 9117' MD -86 GPM AND 450 PSI 17:00 - 21:00 4.00 DRILL N DPRB PROD1 WEIGHT UP MUD FROM 10.2 PPG TO 10.5 PPG. -250 GPM,1083 PSI -45 RPM,7K TQ -155K PUW,105K SOW. MONITOR WELL,SLOW PUMP RATES TAKEN 21:00 - 22:00 1.00 DRILL N DPRB PROD1 RIH FROM 9117'TO 10079'MD 22:00 - 23:00 1.00 DRILL N DPRB PROD1 CIRCULATE AND RECIPRICATE FROM 10079' TO 9985.STAGE PUMPS UP TO 304 GPM AND 1446 PSI. -80 RPM,8K TQ -160K PUW,100K SOW,112K RTW 23:00 - 00:00 1.00 DRILL N DPRB PROD1 WASH DOWN FROM 10079'TO 10229'MD AT 300 GPM AND 1483 PSI. WORK THROUGH TIGHT SPOTS AT 10138'AND 10205'MD. TIGHT HOLE AND PACKING OFF AT 10229' MD. WORK TO ESTABLISH CIRCULATION AND ROTATION. 12/22/2010 00:00 - 02:00 2.00 DRILL N DPRB PROD1 BACK REAM FROM 10200'TO 10070'MD AT 300 GPM AND 1500 PSI,80 RPM AND 9K TQ. PUMP IN HOLE AT 300 GPM FROM 10070'TO 10263'MD AND BACK REAM STAND. PUMP IN HOLE FROM 10177'TO 10310'. PACK OFF AT 10283'AND 10310'MD. REGAIN CIRCULATION AND BACK REAM FROM 10310'TO 10264'MD. PUMP IN HOLE FROM 10264 TO 10359'MD 02:00 - 07:00 5.00 DRILL N DPRB PROD1 PACKOFF AT 10359'. PU TO 10320'AND REGAIN CIRCULATION. BACKREAM FROM 10320'TO 10280'MD. PUMP DOWN TO 10360' AND BACKREAM FROM 10360'TO 10280'MD. WORK TIGHT SPOTS AT 10340'AND 10305' MD. RIH FROM 10360'TO 10390'AND PACKOFF. BACKREAM TO 10355'PUMP DOWN TO 10481'MD. 07:00 - 08:00 1.00 DRILL N DPRB PROD1 WORK STUCK PIPE AT 10481'. NO CIRCULATION OR FREE MOVEMENT. FREE PIPE AND ESTABLISH CIRCULATION AT 42 GPM WITH 420 PSI. 10.5 PPG MW IN AND OUT 08:00 - 11:00 3.00 DRILL N DPRB PROD1 PUMP OUT OF THE HOLE FROM 10481'TO 9043'AT 42 GPM WITH 420 PSI.UP WT. 160K/ SOW 110K. MONITOR THE WELL AT 9043', STATIC. 11:00 - 12:00 1.00 DRILL N DPRB PROD1 SERVICE THE TOP DRIVE,CHANGE OUT THE SAVER SUB AND PRESSURE TEST TO 3000 PSI. GOOD TEST.CLEAN AND CLEAR THE RIG FLOOR. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 26 of 31 Operation Summary Report Common Well Name:S-128 'AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual©66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 13:30 1.50 DRILL N DPRB PROD1 RUN IN THE HOLE FROM 9043'TO 10445'. SAW 10K DRAG AT 10445'. 13:30 - 15:00 1.50 DRILL N DPRB PROD1 CIRCULATE AND CONDITION MUD ROTATING AND RECIPROCATING FROM 10445'TO 10360'. STAGE THE PUMPS UP TO 300 GPM WITH 1726 PSI ROTATING AT 80 RPM WITH 9K TQ. UP WT. 175K/ROT WT. 112K/SOW 88K 15:00 - 16:00 1.00 DRILL N DPRB PROD1 WASH AND REAM FROM 10445'TO 105(13'AT 323 GPM WITH 1700 PSI ROTATING AT 110 RPM WITH 10K TQ. STALL OUT THE TOP DRIVE WITH 11.5K TQ AND PACK OFF AT 10503'. 16:00 - 22:30 6.50 DRILL N DPRB PROD1 BACK REAM FROM 10503'TO 9610'. ATTEMPT TO STAGE THE PUMPS UP TO 300 GPM,AND PACKED OFF. BACK REAMED OUT AT 256 GPM WITH 1225 PSI AT 80 RPM WITH 10K TQ. 22:30 - 23:00 0.50 DRILL N DPRB PROD1 PUMP OUT OF THE HOLE FROM 9610'TO 9045'AT 195 GPM WITH 860 PSI. UP WT. 170K /SOW 98K 23:00 - 00:00 1.00 DRILL N DPRB PROD1- SLIP AND CUT 71'OF DRILLING LINE. MONITOR THE WELL. STATIC. MUD WT. IN AND OUT 10.5 PPG. 12/23/2010 00:00 - 04:00 4.00 DRILL N DPRB PROD1 CIRCULATE AND CONDITION THE MUD SYSTEM MIXING THE 10.4 PPG INHIBITED SPIKE FLUID INTO THE ACTIVE SYSTEM AT 300 GPM WITH 1600 PSI. SLOW PUMP RATE TAKEN 04:00 - 07:30 3.50 DRILL N DPRB PROD1 RUN IN THE HOLE TO 10497'ON ELEVATORS. TOOK 10K. BEGAN CIRCULATING THE HOLE CLEAN AT 300 GPM WITH 1575 PSI. WORKING PIPE 10489'TO 10463'. -60 RPM,9.5K TQ UNABLE TO ROTATE ON THE UP STROKE. WORK UP NO ROTATON. ADD 1.5%LUBES. -175K PUW,80K SOW 07:30 - 10:00 2.50 DRILL N DPRB PROD1 STUCK PIPE AT 10517'MD. WORK WITH JARS,ROTATE AND PUMP. ESTABLISH CIRCULATION WITH RESTRICTED FLOW AT 4 BPM. PACK OFF AGAIN. WORK PIPE FREE. 10:00 - 11:00 1.00 DRILL N DPRB PROD1 PULL BACK TO 10361'MD. STAGE PUMPS UP AND CIRCULATE BOTTOMS UP AT 5 BPM AND 1080 PSI. CONTINUE TO FIGHT PACK OFF. UNABLE TO ROTATE 11:00 - 12:00 1.00 DRILL N DPRB PROD1 PUMP OUT OF HOLE FROM 10361'TO 10285' MD. -60 GPM,550 PSI 12:00 - 16:30 4.50 DRILL N DPRB PROD1 ESTABLISH CIRCULATION AND ROTATION AT 10285'MD. REAM/WASH FROM 10285'TO 10495'MD AT 255 GPM AND 1330 PSI. 100 RPM AND 8.7K TQ. -180K PUW,90K SOW SLOW PUMP RATES TAKEN 16:30 - 20:00 3.50 DRILL N DPRB PROD1 WORK DOWN FROM 10495'TO 10516'MD. -250 GPM,1374 PSI -80 RPM,9-10K TQ -175K PUW,95K SOW,115K RTW SLOW PUMP RATES TAKEN Printed 1/28/2011 5:08:39PM • North America -ALASKA- BP Page 27 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:00 - 23:30 3.50 DRILL N DPRB PROD1 PUMP OUT OF HOLE TO PREVENT SWABBING FROM 10516'TO SHOE AT 9117' MD. MONITOR WELL,STATIC. 10.4 PPG MW IN AND OUT 23:30 - 00:00 0.50 DRILL N DPRB PROD1 PUMP OUT OF HOLE FROM 9117'TO 8764' MD. 350 GPM AND 1693 PSI -65 RPM 12/24/2010 00:00 - 01:30 1.50 DRILL N DPRB PROD1 PUMP BOTTOMS UP AND CIRCULATE AROUND TWO 20 BBL HI DENSITY SWEEPS TO CLEAR BHA. -400 GPM,2115 PSI -50 RPM,5.5K TQ -105K RTW SHUT DOWN AND MONITOR WELL,STATIC. 10.4 MW IN AND OUT 01:30 - 05:00 3.50 DRILL N DPRB PROD1 POOH FROM 8764'TO 8388'MD. PIPE NOT SWABBING. PUMP DRY JOB. CONTINUE TO POOH TO 117'MD KICK WHILST TRIPPING DRILL(D1) 05:00 - 06:30 1.50 DRILL N DPRB PROD1 PJSM, LD CLEAN OUT BHA(#8). EP7258 HUGHES BIT GRADED 1-1-WT-A-E-I-NO-BHA 06:30 - 10:00 3.50 STKOH N DPRB PROD1 PICK UP 6-1/8"PRODUCTION DRILLING BHA (#9):6-1/8"MSF513D-B1C HYCALOG BIT, AIM AD MOTOR 1.5 DEG BEND, IMPULSE MWD, ADN4,CCV. 10:00 - 14:00 4.00 STKOH N DPRB PROD1 RIH FROM 231'TO 1171'MD. SHALLOW HOLE TEST MWD. 250 GPM AND 1180 PSI. CONTINUE TO RIH TO 9117'MD -160K PUW,102K SOW 14:00 - 14:30 0.50 STKOH N DPRB PROD1 RIH FROM 9117'TO 9400'MD 14:30 - 15:30 1.00 STKOH N DPRB PROD1 ORIENT 160 DEG LEFT AND TRENCH FOR OPEN HOLE SIDE TRACK FROM 9370'TO 9400'MD -250 GPM,2050 PSI KICK WHILST DRILLING DRILL(D2) 15:30 - 20:30 5.00 STKOH N DPRB PROD1 TIME DRILL FOR SIDE TRACK AT 9400'MD -250 GPM,2050 PSI -160K PUW,102K SOW NO SUCCESS,UNABLE TO SLIDE AT LOW WEIGHT ON BIT AND ROP 20:30 - 22:00 1.50 STKOH N DPRB PROD1 CONTINUE TO TRENCH FROM 9370'TO 9400' MD UNABLE TO SIDE TRACK AT 9400'MD. DECIDE TO ATTEMPT ROTARY SIDE TRACK AT 9500'MD. 22:00 - 23:30 1.50 STKOH N DPRB PROD1 RIH FROM 9400'TO 9495'MD. ORIENT TO 180 DEG AND TRENCH OPEN HOLE SIDE TRACK FROM 9465'TO 9495'MD -250 GPM,2178'MD 23:30 - 00:00 0.50 STKOH N DPRB PROD1 ROTARY SIDE TRACKING AT 9495'MD -250 GPM,2170'MD -60 RPM,8K TQ -115K RTW Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 28 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual©66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/25/2010 00:00 - 12:00 12.00 STKOH N DPRB PROD1 ROTARY SIDE TRACKING AT 9495'MD. TIME DRILL TO 9506' MD -250 GPM,2170'MD -60 RPM,8K TO -115K RTW,160K PUW,102K SOW H2S DRILL 12:00 - 14:00 2.00 STKOH N DPRB PROD1 CONTINUE ROTATING SIDETRACK FROM 9506'TO 9514'MD 250 GPM,2170 PSI -60 RPM,8K TQ 115K RTW,160K PUW,102K SOW 14:00 - 18:30 4.50 STKOH N DPRB PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 9514'TO 9636'MD. -250 GPM,2720 PSI ON,2515 PSI OFF -160K PUW,102K SOW FIRE DRILL 18:30 - 00:00 5.50 STKOH N DPRB PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 9636'TO 9911'MD. -250 GPM,2480 PSI ON,2310 PSI OFF -40 RPM,9K TQ ON,7.5K TQ OFF -170K PUW,100K SOW,RTW 116K SLOW PUMP RATES TAKEN 12/26/2010 00:00 - 10:30 10.50 STKOH ' N DPRB PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 9911'TO 10453'MD. -252 GPM,2705 PSI ON,2475 PSI OFF -60 RPM,11K TQ ON,9K TQ OFF -180K PUW,87K SOW,RTW 115K 10:30 - 12:00 1.50 STKOH N DPRB PROD1 BACK REAM OUT OF HOLE FROM 10453'TO 9480' MD -250 GPM,2350 PSI -40 RPM,6.5K TQ -112KRTW 12:00 - 12:30 0.50 STKOH N DPRB PROD1 RIH FROM 9480'TO 10453'MD. -180K PUW,90K SOW 12:30 - 00:00 11.50 STKOH N DPRB PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 10453'TO 10800' MD. -252 GPM,2590 PSI ON,2300 PSI OFF -80 RPM,7.5K TQ ON,6.7K TQ OFF -180K PUW,87K SOW,RTW 115K SLOW PUMP RATES TAKEN 12/27/2010 00:00 - 12:00 12.00 STKOH N DPRB PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 10800'TO 11040'MD. -250 GPM,2630 PSI ON,2480 PSI OFF -40 RPM,6.5K TQ ON,5K TQ OFF -150K PUW,107K SOW,RTW 117K SLOW PUMP RATES TAKEN MAN DOWN DRILL 12:00 - 16:00 4.00 STKOH N DPRB PROD1 BACK REAM OUT OF HOLE FROM 11040'TO 10450'MD. -250 GPM,2360 PSI MONITOR WELL,STATIC 10.4 MW IN AND OUT PUMP OUT OF HOLE FROM 10450'TO 9065' MD. 16:00 - 18:00 2.00 STKOH N RREP PROD1 PJSM,CHANGE OUT WASH PIPE AND SWIVEL PACKING. TEST TO 3700 PSI. 18:00 - 22:30 4.50 STKOH N DPRB PROD1 WAIT FOR NEW MUD AND PRODUCTS FROM MUD PLANT. OFF LOAD AND CONDITION MUD. Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 29 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(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 STKOH N DPRB PROD1 RIH FROM 9065'MD TO 11040'MD. NO FILL ON BOTTOM. SLOW PUMP RATES TAKEN 12/28/2010 00:00 - 00:00 24.00 STKOH N DPRB PROD1 DIRECTIONAL DRILL AHEAD IN 6-1/8" PRODUCTION HOLE FROM 11040'TO 12,135' MD. -250 GPM,2790 PSI ON,2630 PSI OFF -80 RPM, 10K TQ ON,7K TQ OFF -155K PUW,100K SOW,RTW 115K -MW IN 10.4,MW OUT 10.4 12/29/2010 00:00 - 07:00 7.00 STKOH N DPRB PROD1 DIRECTIONAL DRILL AHEAD IN 6-1/8" PRODUCTION HOLE FROM 12,135'TO 12,431' MD. -250 GPM,2805 PSI ON,2550 PSI OFF -80 RPM, 10K TQ ON,7.5K TQ OFF -157K PUW,95K SOW,RTW 113K -WOB 15K -SPR'S TAKEN 07:00 - 07:30 0.50 STKOH N DPRB PROD1 CIRC&COND 1X OH VOL. -250 GPM,2550 PSI -FLOW CHECK WELL,WELL STATIC MW IN 10.4,MW OUT 10.4 07:30 - 09:00 1.50 STKOH N DPRB PROD1 BACK REAM&MAD PASS 12,431'TO 12,250'MD -MAD PASS @ 300'/HR -250 GPM,2575 PSI -80 RPM,TQ 8K -RTW110K RIH TO 12,431'MD. 09:00 - 10:00 1.00 STKOH N DPRB PROD1 DIRECTIONAL DRILL AHEAD IN 6-1/8" PRODUCTION HOLE FROM 12,431'TO 12,459' MD ✓ -WOB 15K, RPM 80 -GPM 250, PSI ON 2805,PSI OFF 2550 -TQ 10K ON,TQ 7.5K OFF -PUW 157K,SOW 95K,RTW 113K -AST 1.95,ART 2.10,ADT 4.05 10:00 - 12:00 2.00 STKOH N DPRB PROD1 CIRC&COND. -250 GPM,2520 PSI -80 RPM,TQ 8.5,RTW 110K 12:00 - 18:30 6.50 STKOH N DPRB PROD1 DIRECTIONAL DRILL AHEAD IN 6-1/8" PRODUCTION HO E FROM 12.459'TO 12.616' MD - 15 RPM 80 -GPM GPM 250, PSI ON 2850, PSI OFF 2600 -TQ 10K ON,TQ 7K OFF -PUW 165K,SOW 95K,RTW 110K -AST 1.6,ART 1.05,ADT 2.65 -SPR'S TAKEN @ 12,616'MD 18:30 - 19:00 0.50 STKOH N DPRB PROD1 CIRC&COND 1X OH VOL. -250 GPM,2550 PSI -FLOW CHECK WELL,WELL STATIC MW IN 10.4, MW OUT 10.4 Printed 1/28/2011 5:08:39PM North America -ALASKA- BP Page 30 of 31 Operation Summary Report Common Well Name:S-128 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:00 - 00:00 5.00 STKOH N DPRB PROD1 BACK REAM&MAD PASS 12,616'TO 11,412'MD -250 GPM,2670 PSI -80 RPM,TQ 7K -12,616'TO 12,222'@ 600'/HR -12,222'TO 12,015'@ 300'/HR -12,015'TO 11,960'@ 600'/HR -11,960'TO 11,705'@ 300'/HR -11,705'TO 11,412'@ 600'/HR "LOST 23 BBLS 10.4 MUD TO FORMATION" 12/30/2010 00:00 - 08:30 8.50 STKOH N DPRB PROD1 BACK REAM&MAD PASS 11,412'TO 9,800' MD -250 GPM,2670 PSI -80 RPM,TQ 7K -11,412'TO 11,360'@ 600'/HR -11,360'TO 11,155'@ 300'/HR 11,155'TO 10,980'@ 600'/HR -10,980'TO 10,725'@ 300'/HR -10,725'TO 9,680'@ 600'/HR -9,680'TO 9,500'@ 600'/HR -9,950'TO 9,325'@ 300'/HR AND NO ROTATION 08:30 - 09:00 0.50 STKOH N DPRB PROD1 PUMP OUT OF HOLE 9,325'TO 9,065'MD -250 GPM,2135 PSI -PUW 135K,SOW 115K 09:00 - 10:30 1.50 STKOH N DPRB PROD1 CIRC&COND @ 9,065'MD -DROP 1.76"BALL AND OPEN CIRC SUB. -PUMP @ 2 BPM,660 PSI. -OPEN CIRC SUB W/2,000 PSI. -VERIFY BYPASS OPEN BY WAY OF MWD -PUMP @ 400 GPM,2100 PSI FOR 205 BBLS. -DROP 1.76"BALL TO CLOSE CIRC SUB. -PUMP @ 2 BPM,515 PSI. -CLOSE CIRC SUB W/2150 PSI. -VERIFY BYPASS CLOSED BY WAY OF MWD MONITOR WELL-WELL STATIC 10:30 - 11:00 0.50 STKOH N DPRB PROD1 SLIP&CUT DRILL LINE -CUT 68'OF DRILL LINE 11:00 - 11:30 0.50 STKOH N DPRB PROD1 SERVICE TOP DRIVE 11:30 - 13:30 2.00 STKOH N DPRB PROD1 TIH 9,065'TO 12,616'MD. -NO FILL ON BTM -PUW 145K,SOW 105K. **KICK WHILE TRIPPING DRILL(D2)** 13:30 - 15:30 2.00 STKOH N DPRB PROD1 CIRC&COND 2X BU. -250 GPM,2,700 PSI. -80 RPM,TQ 4K,RTW 110K GAS CUT MUD ON BU,CIRC UNTIL CLEAR. SPR'S TAKEN @ 15:20 HRS FLOW CHECK WELL-WELL STATIC MW IN 10.4 PPG,MW OUT 10.4 PPG 15:30 - 20:00 4.50 STKOH N DPRB PROD1 POOH 12,616'TO 9,065'MD. -ATTEMP TO PULL ON ELEVATORS,HAD INTEMITTENT SWABBING -PUMP OUT OF HOLE AT 40 GPM,&510 PSI Printed 1/28/2011 5:08:39PM • North America -ALASKA- BP Page 31 of 31 Operation Summary Report Common Well Name: S-128 AFE No Event Type: DRL-ONSHORE (DON) Start Date: 11/20/2010 End Date: X3-00W99-C(5,291,717.00) Project: Prudhoe Bay Site:PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual©66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:00 - 21:30 1.50 STKOH N DPRB PROD1 CIRC&COND @ 9,065'MD -DROP 1.76"BALL AND OPEN CIRC SUB. -PUMP @ 2 BPM,685 PSI. -OPEN CIRC SUB W/2,300 PSI. -VERIFY BYPASS OPEN BY WAY OF MWD -PUMP @ 400 GPM,2160 PSI FOR 205 BBLS. -DROP 1.76"BALL TO CLOSE CIRC SUB. PUMP @ 2 BPM,525 PSI. -CLOSE CIRC SUB W/2075 PSI. -VERIFY BYPASS CLOSED BY WAY OF MWD DROP DP RABBIT MONITOR WELL-WELL STATIC 21:30 - 00:00 2.50 STKOH N DPRB PROD1 TRIP OUT OF HOLE 9,065'TO 1,400'MD 12/31/2010 00:00 - 00:30 0.50 STKOH N DPRB PROD1 CONT.TOH TO BHA 00:30 - 02:30 2.00 STKOH N DPRB PROD1 LD BHA BIT GRADE 1-3-BT-G-X-I-ER-TD Printed 1/28/2011 5:08:38PM North America -ALASKA- BP Page 1 of 4 Operation Summary Report Common Well Name:S-128 AFE No Event Type:COM-ONSHORE(CON) Start Date: 11/30/2010 End Date: 1/4/2011 X3-00W99-C(1,652,214.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12/31/2010 02:30 - 04:00 1.50 CASING P RUNPRD RU CSG TOOL TO RUN 4-1/2"PROD LINER 04:00 - 13:00 9.00 CASING P RUNPRD RUN 4-1/2"12.6#IBT-M L-80 PRODUCTION LINER SURF TO 3,646'MD -MU FLOAT TRACK-CONDUCT FLOAT CHECK - •A - L► -RUN 73 JNTS 4-1/2"12.6#IBT-M L-80 LINER LINER INCLUDED 6-4-1/2"BAKER CMD SLIDING SLEEVES,&7-4-1/2" SWELL PACKER ASSEMBLIES -FIL LIN r ERY JOI PUW 78 ,S. • • BACK • •-ILL - 13:00 - 14:00 1.00 CASING P RUNPRD CIRC&COND -CIRC 1.5 TIMES BU -STAGE PUMPS UP TO 5 BBLS/MIN @ 760 PSI. -MW 10.4 PPG,MW OUT 10.4 PPG 14:00 - 00:00 10.00 CASING P RUNPRD TIH'W/4-1/2"PRODUCTION LINER ON DP 3,646'TO 12,596'MD. -WASH DOWN EVERY 10TH STAND.HAD FLOW INCREASE AT 10,224' -FLOW CHECK WELL WELL STATIC-MUD AIR CUT CONT TO CIRC. -CONDUCT 2ND FLOW CHECK -WELL STATIC -CONT IN HOLE WITH LINER-PARK LINER @ 12,596'MD 1/1/2011 00:00 - 01:30 1.50 CASING P RUNPRD CIRC&COND -STAGE UP PUMPS&CIRC 3 X BTM UP -104GPM @950 PSI 01:30 - 04:30 3.00 CASING P RUNPRD DISPLACE 10.4 PPG LSND MUD WITH 10.4 PPG BRINE -160 GPM @1090 PSI 04:30 - 08:30 4.00 CASING P RUNPRD DISPLACE 10.4 BRINE WITH 10.4 MOBM -PUMP 25 BBL 11.4 BRINE SPACER -PUMP 45 BBLS 10.4 HI-VIS MOBM -PUMP 145 BBLS 10.4 MOBM -PUMP 90 BBLS 10.4 BRINE -BLOW DOWN TOP DRIVE -MONITOR WELL-WELL STATIC 08:30 - 10:00 1.50 CASING P RUNPRD SET LINER HANGER&PACKER -DROP 1-3/4"BALL,AND ALLOW TO DROP TO SEAT W/O PUMPING -PRESSURE UP TO 1800 PSI TO SET LINER HANGER 4 -PRESSURE UP TO 2250 PSI TO ACTIVATE I/ BAKER ZXP PACKER -PRESSURE UP TO 2900 PSI TO RELEASE BAKER HRD-E RUNNING TOOL -PRESSURE UP TO 3190 PSI TO NEUTRALIZE PUSHER TOOL -CONT TO PRESSURE UP TO 3700 PSI TO VERIFY SET AND RELEASE -PULL RUNNING TOOL ABOVE LINTER TOP PACKER **PRESSURE TEST LINER TOP PACKER TO 1500 PSI FOR 10 MIN.** Printed 1/28/2011 5:08:26PM 41) North America -ALASKA- BP Page 2 of 4 Operation Summary Report Common Well Name:S-128 AFE No Event Type:COM-ONSHORE(CON) Start Date: 11/30/2010 End Date: 1/4/2011 X3-00W99-C(1,652,214.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:00 - 12:30 2.50 CASING P RUNPRD DISPLCE WELL BORE FLUID OVER TO 10.4 PPG BRINE -PUMP 400 BBLS 10.4 BRINE -174 GPM@501 PSI 90 BBLS BRINE CONTANIMATED WITH MOBM BACK TO SURFACE MONITOR WELL-WELL STATIC MW IN 10.4 PPG,MW OUT 10.4 PPG 12:30 - 15:30 3.00 CASING P RUNPRD LD DP 8,962'TO 5,359'MD 15:30 - 17:30 2.00 CASING P RUNPRD POH W/BAKER RUNNING TOOL -CONFIRM DOG SUB SHEARED -LD RUNNING TOOL -CLEAR RIG FLOOR -MONITOR WELL-WELL STATIC **KICK WHILE TRIPPING DRILL** 17:30 - 18:30 1.00 CASING P RUNPRD SERVICE TOP DRIVE&BLOCKS -RD MWD STD PIPE SENSOR,AND DRAW WORKSENSOR 18:30 - 19:00 0.50 CLEAN P CLEAN PICKUP MOBM CLEAN OUT BHA#10 6-1/8"RE-RUN BIT HUGHES EP7258 7"CSG SCRAPER BIT SUB FLOAT SUB&FLOAT 7"CSG BRUSHES X-O 3-JNTS 4"DP HYD JARS 4"DP 19:00 - 21:30 2.50 CLEAN P CLEAN TIH WITH BHA#10 TO 8,957' -PUW 157K,SOW 103K. 21:30 - 22:30 1.00 CLEAN P CLEAN CIRC&COND -PUMP 20 BBLS SURFACTANT PILL -CIR SWEEP TO SURF W/346 BBLS @ 450 GPM&2730 PSI -MONITOR WELL-WELL STATIC -MW IN 10.4 PPG,MW OUT 10.4 PPG 22:30 - 00:00 1.50 CLEAN P CLEAN LD DP 8,957'TO 7,275'MD 1/2/2011 00:00 - 06:30 6.50 CLEAN P CLEAN LD DRILL PIPE TO BHA @ 146' **KICK WHILE TRIPPING DRILL** 06:30 - 07:00 0.50 CLEAN P CLEAN LD BHA#10 07:00 - 07:30 0.50 CLEAN P CLEAN CLEAR RIG FLOOR 07:30 - 08:00 0.50 CLEAN P CLEAN RIG SERVICE 08:00 - 09:00 1.00 EVAL P OTHCMP RU SCHLUMBERGER WIRELINE 09:00 - 13:00 4.00 EVAL P OTHCMP RIH 6.05 GAUGE RING AND JUNK BASKET TO 8960' POOH WITH GR&JUNK BASKET -DID NOT RECOVER ANYTHING IN JB OR ENCOUNTER ANY OBSTRUCTIONS -RD GR&JUNK BASKET 13:00 - 17:30 4.50 EVAL P OTHCMP RUN SCHLUMBERGER UJSIT LOG 0 -LOG FROM 8950'MD TO SURF. -VERIFY LOG -RD WIRELINE Printed 1/28/2011 5:08:26PM North America -ALASKA- BP Page 3 of 4 Operation Summary Report Common Well Name:S-128 AFE No Event Type: COM-ONSHORE(CON) Start Date: 11/30/2010 End Date: 1/4/2011 X3-00W99-C(1,652,214.00) Project. Prudhoe Bay Site: PB S Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:30 - 00:00 6.50 BOPSUR P OTHCMP TEST BOPS -PULL WEAR RING&RU TEST EQUIPMENT. 4-1/2"TEST JOINT USED -TEST CHOKE MANIFOLD,KILL LINE, HCR, n_ TIW,UPPER,LOWER PIPE,AND BLIND RAMS. ,9 TEST 250 PSI LOW,AND 4,000 PSI HIGH FOR 5 MIN. -UPPER&LOWER KELLY VALVES,IBOP TEST 250 PSI LOW,AND 4,000 PSI HIGH FOR 5 MIN. **UPPER KELLY VALVE WOULD NOT TEST** -TEST ANNULAR TO 250 PSI LOW AND 2,500 HIGH FOR 5 MIN -CONDUCT ACCUMULTOR CLOSING UNIT TEST 85 SECONDS. 1/3/2011 00:00 - 02:30 2.50 BOPSUR P OTHCMP TEST BOP -CHANGE OUT UPPER KELLY VALVE DUE TO IT FAILING TO TEST. -RE-TEST KELLY VALVE 250 PSI LOW,4,000 PSI HIGH FOR 5 MIN. **AOGCC REP BOB NOBLE CONTACTED @ 18:30 HRS AND WAIVED TEST WITNESS. TEST WITNESSED BY BP REP.JEFF LOFTIS AND NABORS REP LENWARD TOUSSANT** 02:30 - 03:00 0.50 BOPSUR P OTHCMP RD TEST EQUIPMENT -PULL TEST PLUG 03:00 - 04:30 1.50 RUNCOM P RUNCMP RU CASING TOOLS TO RUN 4-1/2" COMPLETION STRING �Ip� 04:30 - 16:00 11.50 RUNCOM P RUNCMP RUN 4-1/2" 12.6#L-80 TC II COMPLETION AND SPACE OUT TO 8,969'MD. -TORQUE TURN TC II CONNECTION AVERAGE M/U 3,850 PSI -BTM OF TBR 8,974'MD -LAND TBG WITH FMC HANGER 16:00 - 18:00 2.00 RUNCOM P RUNCMP CIRC&COND -CIRC 10.2 PPG BRINE FOLLOWED BY 41 BBLS 10.2 PPG CORROSION INHIBITTED BRINE. FOLLOWED BY 10.2 PPG CLEAN BRINE. -4 BPM @ 520 PSI. 18:00 - 21:00 3.00 RUNCOM P RUNCMP DROP BALUROD.&SET PACKER -SET PKR(INDICATION OF SET @ 2,300 PSI), PRESS TEST TBG TO 4,000 FOR 30 MIN. -BLED 30 PSI 1ST 15 MIN,15 PSI LAST 15 MIN. BLEED TBG TO 2500 PSI,&TEST IA TO 4,000 PSI FOR 30 MIN -BLED 50 PSI 1ST 15 MIN,20 PSI LAST 15 MIN. BLEED OFF BOTH TBG&IA.SHEAR DCK W/ 3,100 PSI ON IA -REV.CIRC AT 3 BPM @ 820 PSI -PUMP AT 3 BPM DOWN TBG @ 1,140 PSI. **AOGCC REP BOB NOBLE DECLINED TO WITNESS TEST.BP TEST WITNESS JEFF LOFTIS** Printed 1/28/2011 5:08:26PM North America -ALASKA- BP Page 4 of 4 Operation Summary Report Common Well Name:S-128 AFE No Event Type: COM-ONSHORE(CON) Start Date: 11/30/2010 End Date: 1/4/2011 X3-00W99-C(1,652,214.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.. NABORS 7ES Spud Date/Time: 11/27/2010 12:00:00AM Rig Release: 1/4/2011 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: S-128 Actual @66.66ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 22:00 1.00 RUNCOM P RUNCMP MONITOR WELL FOR 1 HR-WELL STATIC 22:00 - 22:30 0.50 RUNCOM P RUNCMP SET TWC AND TEST 250 LOW&1,000 PSI HIGH FOR 10 MIN FROM ABOVE AND BELOW. 22:30 - 00:00 1.50 BOPSUR P RUNPRD ND BOP'S 1/4/2011 00:00 - 01:30 1.50 BOPSUR P RUNCMP ND BOP&TIE BACK 01:30 - 05:00 3.50 WHSUR P RUNCMP N/U FMC 5,000 PSI ADAPTER AND 4-1/16"X 5,000 PSI DRY HOLE TREE 05:00 - 08:00 3.00 WHSUR P RUNCMP PRESS TEST ADAPTER FLANGE AND TREE -TEST P/O AND ADAPTER FLANGE TO 5K FOR 10 MIN ON CHART -FMC DIGITAL RECORDER FAILED-HAD TO CHART TEST W/PEN RECORDER 08:00 - 10:30 2.50 WHSUR P RUNCMP RU LUBRICATOR TO PULL TWC -PRESSS TEST 300 PSI LOW,3,500 PSI HIGH FOR 10 MIN PULL TWC -ISOLATE AND TEST TO 500 PSI -RD LUBRICATOR 10:30 - 14:00 3.50 WHSUR P RUNCMP FREEZE PROTECT WELL -RU LINES AND PRESS TEST TO 3500 PSI REV CIRC 75 BBLS DIESEL @ 3 BPM&1250 PSI. -ALLOW TO U TUBE. -BLOW DOWN/RD LINES 14:00 - 18:00 4.00 WHSUR P RUNCMP RU LUBRICATOR TO SET BPV / -PRESSS TEST 300 PSI LOW,3,500 PSI HIGH i✓ FOR 10 MIN SET BPV -ISOLATE AND TEST TO 250 PSI LOW,1000 PSI HIGH FOR 10 MIN. -INSTALL VR PLUGS IN 7"CSG OUTLETS -RD LUBRICATOR -WELL SECURE RIG RELEASED @ 18:00 HRS MOB TO DS5 Printed 1/28/2011 5:08:26PM S-128, Well History Date Summary 01/04/11 T/I/0=0/0/0 Rigged up lubricator and tested to 300 psi low and 3500 psi high (passed) Pulled 4"CIW H TWC © 86"w/0 ext. Rig freeze protect and u-tube. Rigged up lubricator and tested to 300 psi low and 3500 psi high. (passed) Set 4"CIW H BPV#105. Little Red tested BPV(passed) Set 2" New Style VR plugs in both I/A's and 0/A. Nabors 7ES RDMO. 01/27/11 Attempted to install upper tree, Scaffolding torn down (unable to do job). Install upper tree on 1-28-2011 after scaffolding re-erected. 01/28/11 Attempted to install upper tree, Boomtruck problems 01/29/11 T/I/O=BPV/VR/VR Temp=BPV Remove Dry hole Tree And Install New 4 1/16 CIW Upper Tree with ME- 60 Actuator Verified BPV,Tested against master valve 500psi low for 5 min (PASS),Tested 3500psi high for 5 min (PASS). Removed 4 1/16 CIW upper dry hole tree, Installed New 4 1/16 CIW upper Tree with ME-60 actuator.Torqued flanges to 726 ft lbs. Unable to Pressure test or pull BPV due to scaffolding height. ***Job Complete*** 01/30/11 T/1/0=0/0/0 Verified barriers. Pulled 2" FMC VR plugs from both I/A's&0/A.Tested lubricator to 500 psi low and 3500 psi high each time it was rigged up. **job complete** Page 1 of 1 TREE= CIW WELLHEAD= FMC NESAFETY IES:WELL ANGLE 70°>@ 9176' ACTUATOR= ELECTIRC i 2 8 KB. ELEV = 66.66' BF. ELEV= 38.0' P MaOxAngle= 98° @ 125610' 20"INSULATED 112' , , 2101' H4-1/2"HES X NIP, ID=3.813" Datum MD= 9009' CONDUCTOR, li L Datum TVD= 6700.SS H-40,91.5#, ID=19.124" 9-5/8"CSG,40#, L-80 BTC, ID=8.835" — 3772' GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 3 4177 3495 46 KBG2 DMY BK 0 01/03/11 7"LNR,26#,L-80 TCII XO TO L-80 BTC-M —I 6201' F—X L X 2 6769 5304 44 KBG2 DCK BK 0 01/03/11 1 8732 6629 59 KBG2 DMY BK 0 01/03/11 1 1--1 8853' I—4-1/2"HES X NIP, ID=3.813" Minimum ID = 3.813"" @ 2101' 4-1/2" HES NIPPLE 8884' J_ 7"X 4-1/2"HES TNT PKR, ID=3.856" X x 11 8921' H4-1/2"HES X NIP, ID=3.813" i1 8957' —4-1/2"HES X NIP, ID=3.813" I. 8963' —7"X 5"BKR HRD ZXP LTP, ID=4.380" 4-1/2"TBG, 12.64, L-80 TCII, —{ 8969' `7 8969' —14-1/2"WLEG, ID=3.958" .0152 bpf, ID=3.958" 8986' —17"X 5"BKR FLEX LOCK LNR HGR, ID=4.370" 1 8996' 5"X 4-1/2"XO, ID=3.94" 7"LNR,26#, L-80 BTC-M, —{ 9116' �A 0383 bpf, ID 6.276" BKR CM D SLIDING SLEEVE,ID=3.813" SIZE NO# TOP DEPTH Opn/Sqz DATE 4-1/2" 6 9272 C 12/31/10 4-1/2" 5 9891 C 12/31/10 4-1/2" 4 10465 C 12/31/10 4-1/2" 3 11548 C 12/31/10 �� 4-1/2" 2 12043 C 12/31/10 •vii 4-1/2" 1 12412 C 12/31/10 1/% 31'ELEMENT OIL/WATER '/ ' SWELL PACKERASSEMBLY PERFORATION SUMMARY VS/r4 NO SIZE TOP DEPTH MIN ID REF LOG: LWD 7 4-1/2" 9411 3.958" ANGLE AT TOP PERF:59°@ 9116' 6 4-1/2" 9540 3.958" Note: Refer to Production DB for historical perf data 5 4-1/2" 10731 3.958" SIZE SPF INTERVAL Opn/Sqz DATE % 4 4-1/2" 10803 3.958" le 2 4-1/2" 11234 3.958" :� 2 4-1/2" 11234 3.958" I)° 1 4-1/2" 11813 3.958" NOTE:LINER IS UNCEM ENTED ( #' v 4-1/2"LNR, 12.6#, L-80 IBT-M, .0125 bpf, ID=3.958" --I 12596' i, 1 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNff 01/04/11 N7ES ORIGINAL COMPLETION WELL: S-128 01/08/11 PJC DRLG DRAFT CORRECTIONS PERMIT No: 2101590 01/11/10 TW/PJC FINAL DRLG CORRECTIONS API No: 50-029-23436-00 SEC 35,T12N,R12E,2048'FNL&716'FWL BP Exploration(Alaska) 1. f . Data Analyzer Query Results Query Name: LOT/FIT Fixed Field Data by Wellbore Comm.WB I Date LOT/FIT MW(ppg) I TVD(ft) TMD(ft) I Surface BHP(psi) I EMW(ppg) Name Press(psi) S-128PB2 112/8/2010 10:00:00 PM LOT 1 8.801 3,212.471 3,772.001 560.01 2,028.61 12.16 S-128PB2 ;12/15/2,010 FIT 10.201 6,833.92 9 9,116.001 460.01 4,081.11 11.50 • 1/28/2011 17:03 Page 1 of 1 • MN 0 m 3 n y n n °o a 2 2 a 3 1°0 60.0 y K,M,d-m m s-2- o • R(• 7 0 o o o c O d ri O O al—DI N � 0 Coa ;o a a A D m 3 y m0 co om =m c) ,o», .0 m, . N .m <(? m m f?. . (aA D b m m o` W -.V N N NN N NNWNN N � p O08 3 VNU 6851:Z4 WWOWOAO3V WT&EW8TWW WANTW WATTO VWaTO 88 LOAA� VUWUeO 88A8V NOT SSgNa NVStT NUWVO 88888 08808- O W V Q T ((�� 00 Z Z ZN 0 n O O(p(Cm D914ZmwT0 8Ww_ w2 yE7 AA ATTTT TATAA AWATAWV NW �� VN ANpTA NODVV O�WWNN NNOOO mNmNT p T08 TTW88 NW8 TJTNO NAAVAO8T'A OiNWO >�800 TTW8O °n CUp 7D m..<720 _ m 8 13 0 0 T 71 j T > C.) T. 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A LL DATA '):P : /Z6/6.I41).. 6 8Nt1 TVD.; PITA . t ZG IG• IC 6 PP/IVD INT Casing : 714 .. _ Shoe : I1l!o pZ) 667ZTV ; DV : .-----113) StorrEar.ine : Sbc : IZS1G .ren G75/1/ TVD ; TOP : 71t 3 6 P/7 T'1D 1.1 Tubing Zn t ' 9G1 1 M.D TVD ; St t dY :ola S a «= m an6 ; P :rfs 3LofrE1 to ._...,. .-.. . gait P.m.,_._veep a. ISCP.AYIC:A1aa II Cir -- ?ART fl • q gar xnnu a3,v.E ?re -s� Fest: ilocv,.., 15 miu_3110._; 30 min. .31'30pst; Cements . •se.s MECHANICAL PART Li'A..' Cement Volumes : .iut. Liner N+"le. Gel /56 bbf ; Cmt vol to cover perf.,s /ZG 6$4- � 3'7 xC•-__.,,., _._.> Theore.ticE.i TOG 30cif 3 A' d .... ..��.xr Cement Bond Leg d or leo)KS !7- ; In AOCCC File CSI, Evalus.tion, Mone above perfs 0tu eet si� sew _ ie)0 --P 4-f 3ov' M D Production Logs Type N/A ; Evaluation_, • CONCLUSIONS : . ' r t !a MIT- re (.4.artegef s. --•— T • V Q ; 4__ ;kti-ert:5 /`too f route Y a `!!-t t —J 1r 1.41,2 ao m m v IDR z a tl y wW191 T. 3 C > >.i> N S. 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J m 9.m mcg D>g ,� o m x>02: y m sm� � 11 Viii ;. i 3 o_ N 0 Maunder, Thomas E (DOA) From: Staudinger, Mark [Mark.Staudinger@bp.com] Sent: Monday, December 27, 2010 10:50 AM To: Maunder, Thomas E(DOA); Schwartz, Guy L(DOA) Cc: Stewman, Sondra D; Barker, Elizabeth R(SAIC) Subject: RE: S-128 Potential Sidetrack Attachments: S-128 (P15)report.pdf S-128(P15) report.pdf(1 MB) FYI- We began an open hole sidetrack on S-128 on Friday, December 27th. We plan to re-drill the production hole. We didn't plug the original wellbore. We kicked out at -9500' MD' . We are currently drilling ahead at 11, 000' MD. Please let me know if you have any questions. Thanks, Mark Staudinger BP Exploration Alaska Operations Drilling Engineer GPB Rotary Drilling (907) 564-5733 (907) 440-7403 cell Original Message From: Staudinger, Mark Sent: Thursday, December 23, 2010 11:55 AM To: Maunder, Thomas E (DOA) ; Schwartz, Guy L (DOA) Subject: RE: S-128 Potential Sidetrack Tom- Currently the 7" intermediate casing is set @ 9116' MD. TD of the 6-1/8" hole section is 12,420' MD. Currently having hole problems 10,500 ' to 11, 000' MD. We are not planning on plugging back the old penetration if we re-drilled this section. The plan would be to perform an open-hole sidetrack at -9400 ' and re-drill the section. Attached is the planned sidetrack, if we decide to go that route. However, we are still making efforts to clean up the original well bore. Thanks, Mark 440-7403 Original Message From: Maunder, Thomas E (DOA) [mailto:tom.maunder@alaska.gov] Sent: Wed 12/22/2010 6:25 PM To: Staudinger, Mark; Schwartz, Guy L (DOA) Subject: RE: S-128 Potential Sidetrack Mark, Can you provide some details as to where the casing is, present TD, etc. Is the plan to plug back the penetration? Thanks in advance. Tom Maunder, PE AOGCC 1 From: Staudinger, Mark [mailto:Mark.Staudinger@bp.com] Sent: Wed 12/22/2010 4:39 PM To: Schwartz, Guy L (DOA) ; Maunder, Thomas E (DOA) Subject: S-128 Potential Sidetrack Guy and Tom- I just wanted to give you guys a heads up. We drilled the production hole of S-128 and are having hole problems. Currently we are cleaning out the hole with a cleanout BHA, but there is a chance we will have to open-hole sidetrack the production hole and re-drill to the previous bottom hole location. I just wanted to keep you guys in the loop. Please call me if you have any questions. 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E a a • a m. w w o a > > o 0 0 o Z o (00 c 2 c 2 c Z Z c ceU iLU3 maU)NF-U JJU(7 0 HY WU 6 00 (0 WU 6 WU (0 WUN WI- 0 ( o 0 o ) _ 8 00 3.CID \ !, ■* !: = co CID 2 -. 1\ = !! 7 . 2! d \ C CID CI a (\C P:, LI / z\ \ 2 0 , o .! § $ -`� ® | ~ 6 !§§ ¥ « ;.- 2 //1 ` 0 . } \ II :•-'\ 2 0 \ | >Er- . } CO /§ . ! m /\ \ ] Cr)o a = !§ I ( a | o E C (00 0 ) , _ .w � F - ` 3 | " 0 g _ • ` \ t IS !G . f ;! o ! R t o o k 2 > !» ° / | ' \ � � . (:, ) `\ ` | E k! LIS c • 0 CO ■ M i§ | r § i\5. 0 § k 0 G 7 ) / § UmGWl•=ele Aa 1 1 by 0 Schlumberger --••• Witt rIFID STRDCTDRF S-128 (P15) Prudhoe Bay Unit-WOA S-PAD Magnets Parameters Surface Location NND27...Slate Plane.Zona 04.US Fen Mrscelemems Model BGGM 2010 Dy. 80.978° Date: December 22,2010 Lal: N 7021 8.881 Northing'. 5979433.84 BUS Gri4 Donv.090914829° Slot S-128 ND Ref: Rotas TaMa166.888 above MSL) Meg Dec. 21654° FS. 57651 EMT Lon. W149 2 4.777 Feetvrg. 018885 49 BUS Scale Fact 099991808 Plan. 5-128(P15) Sny Dale'.December 222010 -7000 -6500 -6000 -5500 -5000 -4500 -1000 5:1k8es2 -1000 N .i'- S-128 Poly L. -1500 � .riger'sTaFge?. -1500 Tie-In Survey KOP Cr;101100 . -2000 -2000 rEnd Curve F Cry 101100 tA S-128 Fit10,1rf. S-128 Redrill Tgt 1 A A Z -2500 -2500 O End Curve 0 / CN 10/100 C . S 128 Redrill Tgt 2 II N Cry 10110; ®� End Curve m -3000 5=i +12eifirtgf4' ! -3000 End Curve Cl) / Cry 101100 ✓ / ✓ S-128 Redrill Tgt 3 V End Curve -3500 -3500 /01S-128 F8 4 6830ss Cry 10/100 S-128 Redrill Tgt 5 End Curve -4000 -4000 5-128PB S-128(P15' -128 Redrill Tgt 8 -4500 -4500 -7000 -6500 -6000 -5500 -5000 -4500 «< W Scale=1(in):500(ft) E >>> BP Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well S-128 --s,1-;1',,,., ..,�r Project: Prudhoe Bay TVD Reference: S-128 Actual @ 66.66ft(Nabors 7ES) „e,. , Reference Site: PB S Pad MD Reference: S-128 Actual @ 66.66ft(Nabors 7ES) Site Error: 0.00ft North Reference: True Reference Well: S-128 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan S-128 Database: EDM .16-ANC Prod-WH24P Reference Design: Plan#15 S-128 Offset TVD Reference: Offset Datum Reference Plan#15 S-128 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer( Interpolation Method: MD Interval 5.00ft Error Model: ISCWSA Depth Range: 9,387.10 to 12,431.38ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,440.27ft Error Surface: Elliptical Conic Survey Tool Program Date 12/22/2010 From To (ft) (ft) Survey(Wellbore) Tool Name Description 166.00 737.00 S-128 Srvy 1 GYD GC SS(S-128PB2) GYD-GC-SS Gyrodata gyro single shots 1 761.17 3,712.30 S-128 Srvy 2 MWD+IFR+MS(S-128PB2) MWD+IFR+MS MWD+IFR+Multi Station i 3,767.04 3,767.04 S-128 Srvy 3 Inc+Trend(S-128PB2) INC+TREND Inclinometer+known azi trend 3,861.04 9,065.20 S-128 Srvy 4 MWD+IFR+MS(S-128PB2) MWD+IFR+MS MWD+IFR+Multi Station 9,080.72 9,114.29 S-128 Srvy 5 Inc+Trend(S-128PB2) INC+TREND Inclinometer+known azi trend 9,145.14 9,387.10 S-128 Srvy 6 MWD+IFR+MS(S-128PB2) MWD+IFR+MS MWD+IFR+Multi Station 9,387.10 12,431.38 Plan#15 S-128(Plan S-128) MWD+IFR+MS MWD+IFR+Multi Station iI Summary € ' IT'W "er , Y"7 ;"}",7`s; d%"”'" . S .p7-*'W' ,-';" z 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 S Pad Plan S-130 SL1 -Plan S-130-Plan#2 S-130 12,213.36 11,045.00 943.27 275.39 670.29 Pass-Major Risk Plan S-135-Plan S-135-Plan#1 S-135 12,430.80 9,980.00 1,409.05 274.18 1,261.45 Pass-Major Risk S-126_DIMS-S-126-S-126 Out of range S-128-S-128PB2-Plan#14 S-128 12,431.38 12,450.00 14.50 258.06 -242.68 FAIL-Major Risk S-128-S-128PB2-S-128PB2 12,428.02 12,385.00 28.18 74.29 -45.89 FAIL-Major Risk S-129-S-129-Plan#11 S-129 9,950.00 10,425.00 1,268.27 472.30 799.43 Pass-Major Risk S-129-S-129-S-129 9,424.92 9,530.00 1,093.38 273.41 820.41 Pass-Major Risk S-129-S-129PB2-S-129PB2 9,424.92 9,530.00 1,093.38 273.37 820.45 Pass-Major Risk S-17_DIMS-S-17-S-17 Out of range S-17_DIMS-S-17A-S-17A Out of range S-17_DIMS-S-17AL1 -S-17AL1 Out of range S-17_DIMS-S-17B-S-17B Out of range S-17_DIMS-S-17C-S-17C Out of range S-17_DIMS-S-17CPB1 -S-17C PB1 Out of range S-17 DIMS-S-17CPB2-S-17C PB2 Out of range S-215-S-215-S-215 Out of range S-217-S-217-S-217 Out of range S-218-S-218-S-218 Out of range S-218 DIMS-S-218-S-218 Out of range S-40--S-40-S-40 Out of range S-40A-S-40A-S-40A Out of range 12/2212010 4:17:31PM Page 2 of 3 COMPASS 2003.16 Build 73 Project: Prudhoe Bay Site: PB S Pad Well: S-128 Wellbore: Plan S-128 Design: Plan #15 S-128 From KOP to TD Scan interval 100 ft Scale 1 : 50 S-128PB2 well bore shown 0 i = . 330 ------ --- \ 30 N N- I ** t : \ 3004, 60 10021 N, ,.X455 �r. 10863 9909 10959 Ir 11049 :801 S-1 :/S-128PB2 i ; 144V ii, •98 t 270 9499 90 Viii 11 \ \ , \ ,,N .1::::1- 5. ,_-_"_ /, / /// \\\ NN,\'::: '--:---- . • '''V //Ili 240 14:4„ _______-_____.......__i._.____-___ 120 \ --„,, _ ----,. "----- in 00 ----' 210 150 180 Travelling Cylinder Azimuth (TFO+AZI)[°]vs Centre to Centre Separation [50 ft/in] rargec S-128 Poly large Project Prudhoe hay Well:((9.44,0.128 Drilling Target Conf.:95 Based on:Planned Program:Plan 015 5-128 Deacrspuon: Vertical Depth:6796.66 ft below S-128 Actual Map Northing:5977800.0 ft Local+611-S:-1554.66 ft Map heating:61390.0 tt Local(EI-W:-5011.21 It Latitude:7W 20'53.574 N Longitude:149'4'31.213 W Shape:Polygon 8 points 0 -502 liE -2500 -3000 -35:0 -1+000 -L+500 -5000 • -550 O C� n o 0 0 0 O CD CD CD (3 o 0 CD 0 0 CD Ln () r) (-) Ln o n �- L Ln Ln _± _+ Cr) 0 I I I I I / FWEvents on S-128 P»melmf? =' Schwartz, Guy L (DOA) '- --- - --- - ---- -- '-- - --- - - - - - --- From: Schwartz, Guy L (DOA) Sent: Thursday, December 02, 2010 3:38 PM To: 'Staudinger, Mark'; MaunderThomas E (DOA) Co: Shepard, Samantha F; Egbejimba, Uchenna J; Crane, Lowell R; Engel, Harry R; AK, D&C Rig 7ES Well Site Leader Subject: RE: Events on S-128 (PTD 210-159) Mark, I understand you discussed this with Tom already... to the AOGCC notifying us of the situation and plan to remedy would have been sufficient. There is no need for an operational shutdown sundryor P &A request since no hydrocarbon zones were penetrated. Also, an email would have made the second callout for a diverter test understood. Regondo. Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Staudinger,Staudinger, Mark[nlailtm:yqark.Sbsudinger@bp,com/] Sent: Thursday, December 02, 2010 11:29 AM To: Maunder, Thomas E (DOA); Schwartz, Guy L(DOA) Cc: Rossberg, R Steven; Shepard, Samantha F; Egbejimba, Uchenna 3; Crane, Lowell R; Engel, Harry R; AK, D&C Rig 7ES Well Site Leader Subject: RE: Events on S-128 Yes. Sorry that was a typo. We did spud on 11/27 From: Maunder, Thomas E (DOA) [mailto:tom.maunder@alaska.gov] Sent: Thursday, December 02, 2010 11:27 AM To: Staudinger, Mark; Schwartz, Guy L (DOA) Cc: Rossberg, R Steven; Shepard, Samantha F; Egbejimba, Uchenna 3; Crane, Lowell R; Engel, Harry R; AK, D&C Rig 7ES Well Site Leader Subject: RE: Events on S-128 Mark, Just to confirm, as I read your reports spud occurred at 2100 11/27. Is that correct?? Tom Maunder, PE AOGCC From: Staudinger, Mark [nlailto:MarcStaudinger@bp.00rn] Sent: Thursday, December 02, 2010 11:20 AM To: Schwartz, Guy L(DOA)> Maunder, Thomas E (DOA) Cc: Rossberg, R Steven; Shepard, Samantha F; Egbejimba, Uchenna 3; Crane, Lowell R; Engel, Harry R; AK, D&C Rig 7ES Well Site Leader Subject: FW: Events on S-128 12/2/2010 FW: Events on S-128 Page 2 of 2 «S-128 11-29-2010 DON.pdf» «S-128 11-30-2010 DON.pdf» «S-128 12-01-2010 DON.pdf» «S-128 11- 27-2010 DON.pdf» «S-128 11-28-2010 DON.pdf» Tom and Guy- Here is a quick summary on the order of events that occurred on S-128 since November 27th, 2010. Nabors 7es is the rig drilling the well. Attached is the detailed drilling reports from those days. We spudded the well on 11/29 at 21:00 hours. We drilled to 468' MD and stopped drilling due to concerns with crossing a tolerance line with the adjacent well S-134. The directional plan called for a vertical hole to-500' MD, then kickoff with 2.0 degree doglegs. However, we encountered what appeared to be a thaw bulb and the BHA had a tendency to head toward S-134. At 468' MD, the rig team stopped drilling and consulted with town. We did a dedicated UBHO run to get a survey as close to the bit as possible. The results showed that we were still in jeopardy of potentially crossing a tolerance line if we drilled ahead and continued to not get the required build rate. The team was not comfortable with drilling ahead, especially since S-134 was only freeze protected and shut-in at the surface. On Monday, 11/29, we decided to pump a cement plug in S-128 to kick-off of. In the event that we ran into the same close approach issue with S-134, we decided it would be prudent to fluid pack S-134 and set a deep plug in that well to eliminate any HSE risks of a well collision. However, with S-134 being only 15'away from S-128 at surface, we could not rig up slickline onto S-134 with the rig in place. The rig team pumped 160 bbls of 15.8 ppg class'G'cement for a plug and did not get cement back to surface. We felt the cement was somewhere -200' or lower, so we decided to load out more cement for a 2nd plug. While waiting on SLB for more cement and cementers, the rig team RIH with DP and tagged the cement 49' below the conductor after it had reached 500 psi compressive strength. We consulted with our directional drilling company and everyone was confident that we could get kicked off the plug at this depth. At that point we decided not to pump a 2nd plug. The well was monitored and static at this time. The rig then moved off S-128 yesterday so slickline could get on S-134 and set a deep plug. This is our current status, and the rig should be ready to move back on S-128 shortly. Plan forward is to kick off the cement plug, and drill S-128 as planned. There will be no change to the current directional plan. Please let me know if you have any questions about these events. Regards, Mark Staudinger BP Exploration Alaska Operations Drilling Engineer GPB Rotary Drilling (907)564-5733 (907)440-7403 cell 12/2/2010 SlfMI OF AEIS\ SEA SEAN PARNELL, GOVERNOR ALASKA OIL AND GAS 333 W.7th AVENUE,SUITE 100 CONSERVATION COM1IIISSION ANCHORAGE,ALASKA 99501-3539 PHONE (907)279-1433 FAX (907)276-7542 Robert Tirpack Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Aurora Pool, PBU S-128 BP Exploration (Alaska), Inc. Permit No: 210-159 Surface Location: 2048' FNL, 4564' FEL, SEC. 35, T12N, R12E, UM Bottomhole Location: 960' FNL, 1032' FEL, SEC. 04, T 11 N, R12E, UM Dear Mr. Tirpack: Enclosed is the approved application for permit to drill the above referenced service well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, Daniel T. Seamount, Jr. Chair DATED this S day of November, 2010. cc: Department of Fish & Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA ALAS OIL AND GAS CONSERVATION COMIC" 'ON �`'� �V" ilk PERMIT TO DRILL 20 AAC 25.005 '117 2 9 2010 1 a.Type of work: f II i ro•• • f YP 1 b.Proposed Well Class: � � 9r„ Development OilService-Win' Single Zone 0 0 I 0 �p� � 0 Drill 0 Redrill 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone A 6a �S u?lti to'N. ..' ' t 0 Re-Entry 0 Exploratory ®Service-WAG 0 Service-Disp Anehlkilr le Gas 2. Operator Name: 5.Bond: 0 Blanket 0 Single Well 11. Well Name and Number: BP Exploration(Alaska)Inc. Bond No. 6194193 PBU S-128 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 12523' ND 6839' Prudhoe Bay Field/Aurora 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Pool Surface: ADL 028257,028258,028261 2048'FNL,4564'FEL, SEC. 35,T12N, R12E, UM(as staked) Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 3650'FNL,4236'FEL, SEC. 34,T12N, R12E, UM November 15,2010 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 960'FNL, 1032'FEL, SEC 04,T11N, R12E, UM 2560 17200' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: 66.50 feet 15.Distance to Nearest Well Open Surface: x- 618885 y-5979434 Zone- ASP4 GL Elevation above MSL: 38.00 feet to Same Pool: 675' 16.Deviated Wells: Kickoff Depth: 500 feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 95 degrees Downhole: 3418Surface: Z z-S !f• g eg -356(�� ? s 18. Casing Program: Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks `�O Hole Casing Weight Grade Coupling_ Length MD TVD MD , ND (including stage data) 42" 20" 129.5# X-65 WLD 80' Surface Surface 80' , 80' -260 sx Arctic Set • 12-1/4" 9-5/8" 40# L-80 , BTC 3821' Surface Surface 3821' 3232' 586 sx Arctic Set Lite:408 sx Class'G'. 8-3/4" 7" 26# L-80 TC-II/BTC-M 9112' Surface,Surface 9112' 6797' 253 sx LiteCrete: 184 sx Class'G' 6-1/8" 4-1/2" 12.6# L-80 IBT-M 3561' 8962' 6720' 12523' 6839' Uncente�Slotted�Liner v✓ sweep P ..44-4 _. 19. PRESENT WELL CONDITION SUMMARY(To be completed for Redrill and Re-entry Operations) Total Depth MD(ft): Total Depth ND(ft): Plugs(measured): Effective Depth MD(ft): Effective Depth ND(ft): Junk(measured): Casing Length Size Cement Volume MD ND Conductor/Structural Surface Intermediate Production Liner Perforation Depth MD(ft): Perforation Depth ND(ft): 20.Attachments: 0 Property Plat 0 BOP Sketch 0 Drilling Program 0 Time vs Depth Plot 0 Shallow Hazard Analysis 0 Diverter Sketch 0 Seabed Report 0 Drilling Fluid Program 0 20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Mark Staudinger,564-5733 Printed Name Robert Tirpack Title Engineering Team Leader Prepared By Name/Number. Signature --:'''' f_.-C•'7,. j-1,--- Phone .5- 17--,7/'C Date /4�a?y/c Elizabeth Barker,564-4628 Commission Use Only Permit To Drill API Number: Permit Approba Date: See cover letter for Number:c,.O,S9 50-e90'1�,,,341340�0 I' 1\% lb I other requirements Conditions of Approval: If box is checked,well m not be used to explore for,test,orproduce coalbed methane,gas hydrates,or gas contained shales: Er IF PP /� n ��Y p �/ Y Other: yds est: vDr �- t / Samples Req'd: ❑ es ®No Mud Log Req'd: Oyes erNo Pa 4-25o0 psi. An n w`¢Y 1-2-5./ `moi) HZS Measures: Yes 0 No Directional Survey Req'd: p0 Yesn0 No - I a41/-c- t rnvuci• acce p4- L..- 4./o40 ' 2o,4A-G- Z C.e 33 C\) . . M 1 £ a.. .4.�` u t i' -, o f✓- ,k i h a,c.cc�r.J7 ru :k A/o ZL G c..(:•�.., t o ��. P J Q� / / APPROVED BY THE COMMISSION _..-- /L Date `,�/� ,COMMISSIONER Form 10-40 Revi-.. 0 /2009 This permit is valid f.i aA ct approval(20 AAC 25.005(g)) Submi Duplicate 'fi 'I ' {L _ 0,0 TREE= 4-1/16"CM/ CA TULA OR= FMC = ELECTRIC S-12.1 Proposed SAFFrY NOTES: KB.ELEV= 66.5' BF.ELEV= 38.0' KOP= 500' ...„---1TBD H9-5/8"TAM Port Collar Max Angle= ' ' Datum MD= 2100' 114-1/2"HES X NIP,ID=3.813" Datum TVD= 9-5/8"CSG,40#,L-80,BTC, ID=8.8351-I 3821' , GAS LIFT MANDRELS 7"CSG,26#,L-80,TCII,ID=6.276'f--j 6229' ---X X ST MD TVD DEV TYPE VLV LATCH PORT DATE 3 3500 MMG DUM RK 1.5" 2 5300 MMG DUM RK 1.5" Minimum ID =3.813" @ xxxx' 0 1 8822 MMG DCR-1 RK 1.5" HES X NIPPLE ' ' 8862' LI 4-1/2"HES X NIP,ID=3.813" X 8892' 17"x 4-1/2"PROD PKR,ID=3.875" I I • 8922' '_14-1/2"HES X NIP,ID=3.813" ' ' 8952' —14-1/2"HES X NIP,ID=3.813" 4-1/2"TBG, 12.6#,L-80,TCII,.0152 bpf,ID=3.958" —{ 8962' 8962' 7"x 5"BKR HRD ZXP LT PKR, w/BKR LNR HGR, ID=4.43" 7"CSG,26#,L-80, BTC-M, ID=6.276" H. 9112' -Al [♦ 8962' I 14-1/2"WLEG,ID=4.00" Oil/Water Sw ell Packers @ xxxx', xxxx',xxxx',xxxx',xxxx',and xxxx' PERFORATION SUMMARY 01P � REF LOG: ► ANGLE AT TOP PERF: xx°@ xxxxx' We /S Note:Refer to Production DB for historical perf data 0► SIZE SPF INTERVAL Opn/Sqz DATE �� 9 4-1/2"Bkr CM Sliding Sleeve @ xxxx', t� i xxxx',xxxx',and xxxx' 41/2"LNR,12.6#,L-80, IBT-M,.0152 bpf,ID=3.958" 12523' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 10/26/10 MIS PROPOSED COMPLETION WELL: S-128 PERMIT No: API No: SEC 35,T12N,R12E, 3230'FSL,4564'FEL BP Exploration(Alaska} Well Name: S-1 28i Drill and Complete Plan Summary Name Position Office Home Cell Mark Staudinger Drilling Engineer 5733 440-7403 Stephen Crumley Geologist 4078 441-1479 Bob Dawson Ops Geologist 5264 345-3359 242-2391 Taylor West Pad Engineer 4647 337-2028 632-0111 Type of Well (service/ producer/ injector): Injector Targets Northing Easting Z TVDss Township Range Section FSL FEL Surface 5979434 618885 Na 12N 12E 35 3231 4564 Target 1 5977756 613962 6728 12N 12E 34 1629 4236 BHL 5975135 611931 6772 11N 12E 4 4319 1032 API NUMBER: TBD _ Rig: Nabors 7es Estimated Start Date: 11/15/2010 Operating Days to complete: 27.5 MD: 12523' TVD: 6839 RT/GL: 28.5'/38.0' RTE: 66.5' Well Design: Grassroots Ultra Slim Hole, Kuparuk WAG Horizontal Injector 4 1" 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 injecting well Directional Plan: Version: SLB P14 KOP: 500' MD, build 2/100 Maximum Hole Angle: 95° horizontal section Close Approach Wells: All wells pass major risk criteria. Reference anti-collision report Nearest well within Pool S-128i is 675'from S-213A in the Schrader Bluff Pool. S-128i is 1200'from planned S-129 in the Kuparuk Pool. Distance to Nearest Property 17,200' to PBU boundary Line: S-128i Permit Application Page 1 Wells within 1/4 mile of this injection well: Dist.to nearest well within Schrader Bluff pool,ft: S-213A Horizontal section-675' Wells within 1/4 mi.of this well @ top Schrader Bluff reservoir Well Name Dist,Ft. Annulus Integrity Comments S-213A, laterals 675 Slotted liner producing section. S-101 1190' WAG Injector Dist.to nearest well within Kuparuk pool, ft: 1200'west of S-129; 1800'east of S-125 horizontal section. Wells within 1/4 mi.of this injection well @ top reservoir Well Name Dist,Ft. Annulus Integrity Comments S-129 1200 New Well to be drilled 4Q before S-128i Well Status @ Completion WAG Injector Logging Program: Surface Interval Drilling, MWD: GR Open Hole: None Cased Hole: None Intermediate Interval Drilling, MWD: GR, RES, PWD Open Hole: None Cased Hole: USIT Production Interval Drilling, MWD: GR, RES, NEU, Azimuthal Density, Density Caliper Open Hole: None Cased Hole: None Mud Program: 12 '/4" Surface Hole: MAXDRILn Surface Mud Density LSYP PV YP API FL �H (ppg) (Ibf/100ft2) (cP) (Ibf/100ft2) (mis/30min) Spud to TD 8.6—9.5 25-45 15-32 45-65 <9.0 10.3-11.0 8 3/4" Intermediate Hole: LSND Mud Interval Density Vis PV YP pH HTHP API (ppg) Fluid Loss Csg Shoe to THRZ 8.8—9.2 45-55 10—20 18—25 9—9.5 <14 < 8.0 THRZ to TD 10.7 45-55 18—25 18—25 9—9.5 <10 <4.0 S-128i Permit Application Page 2 6 '/8" Production Hole: QUIKDRILn Mud Interval Density Vis PV YP pH MBT API (ppg) Fluid Loss Csg Shoe to TD 9.9 45-55 4—9 20—25 9—9.5 <3 < 15.0 Casing/Tubing Program: Hole Size Csg/ Wt/Ft Grade Connection Length Top Btm Tbg O.D. MD/TVD MD/TVD RTE 42" 20" 129.5 X-65 WLD 80' GL 80'/80' 12 1/4" 9'/8" 40 L-80 BTC 3821' GL 3821'/3232' 8 3/4' 7" 26 L-80 TC-Il 6229' GL 6229'/4927' 8 3/4' 7" 26 L-80 BTC-M 2883' 6229'/4927' 9112'/6797' 6 '/8" 41/2" 12.6 L-80 IBT-M 3561' 8962'/6720' 12523'/6839' Tubing 41/2" 12.6 L-80 TC-Il 8962' GL 8962'/6720' Integrity Testing: Test Point Depth Test Type 9 5/8'Surface Casing 20'—50'from surface shoe LOT Test Point Depth Test Type 7" Intermediate Casing 20'—50'from intermediate shoe FIT Cement Calculations: Surface Casing: Casing Size 19'/8' Basis: Lead: Open hole volume+250%excess in permafrost and 40%excess below permafrost. Port collar used if necessary. Lead TOC: Surface Tail: Open hole volume+40%excess+80'shoe track. Tail TOC: 1000' MD above the casing shoe / Total Cement Volume: Lead 464.4 bbl/2608 ft'/586 sks of Arctic Set Lite at 10.7 ppg and 4.45 cf/sk Tail 84.2 bbl/473 ft°/407 sks of Class 'G'at 15.8 ppg and 1.16 cf/sk Intermediate Casing: Casing Size 7" Basis: Lead: None Open hole volume with 30%excess Lead TOC: 500' MD above the Mc Formation Top / Tail: Open hole volume with 30%excess and 80'shoe track volume, ID 6.276" Tail TOC: 1000'above the 7" intermediate shoe Total Cement Volume: Lead 82.9 bbl/466 ft°/253 sks of LiteCrete at 11.0 ppg and 1.84 cf/sk Tail 38 bbl/213 ft'/183 sks of Class 'G'at 15.8 ppg and 1.16 cf/sk S-128i Permit Application Page 3 Formation Markers: Commercial Est. Formation Hydrocarbon Est. Pore Est. Pore Tops Uncertainty Bearing Press. Press. Formation (TVD) (feet) (Yes/No) (Psi) (ppg EMW) NOTE: All formation tops are required from 1000' above proposed KOP to TD for sidetracks NOTE: All formation tops are required from surface to TD for all new wells G1 396.5 +/- 30' no 149 7.24 SV6 1611.5 +/- 30' no 699 8.34 Base Permafrost 1936.5 +/- 30' no 846 8.40 EOCU 2156.5 +/- 30' no 946 8.43 Poss. Gas SV5 2261.5 +/- 30' hydrates 993 8.44 Poss. Gas SV4 2431.5 +/- 30' hydrates 1070 8.46 Poss. Gas SV3 2826.5 +/- 30' hydrates 1249 8.50 Poss. Free gas or SV2 2971.5 +/- 30' gas hydrates 1314 8.51 Poss. Free gas or SV1 3291.5 +/- 30' gas hydrates 1459 8.52 UG4 3621.5 +/- 30' Thin coal 1608 8.54 UG4A 3656.5 +/- 30' Intervals of heavy oil 1624 8.54 _ UG3 3981.5 +/- 30' Intervals of heavy oil 1771 8.55 UG1 4496.5 +/- 30' Intervals of heavy oil 2004 8.57 UG_Ma 4746.5 +/- 30' Heavy oil 2117 8.58 UG_Mbl 4801.5 +/- 30' Heavy oil 2142 8.58 UG_Mb2 - 4851.5 _ +/- 30' Heavy oil 2165 8.58 UG_Mc o',,,.0 4926.5 +/- 30' Heavy oil 2199 8.58 SB Na 4986.5 +/- 30' no 2226 8.58 SB Nb 4996.5 +/- 30' oil 2230 8.58 SB_Nc 5026.5 +/- 30' no 2244 8.58 SB OA 5106.5 +/- 30' wet 2280 8.59 SB_OBa 5146.5 +/- 30' oil 2298 8.59 SB_OBb 5186.5 +/- 30' oil 2316 8.59 SB_OBc 5236.5 +/- 30' oil 2339 8.59 Fault#1 5246.5 +/- 100' M.D. 0.00 SB_OBd 5266.5 +/- 30' oil 2352 8.59 SB_OBe 5331.5 +/- 30' no 2382 8.59 _ SB OBf 5371.5 +/- 30' no 2400 8.59 OBf_Base 5406.5 +/- 30' no 2416 8.59 Fault#2 possible fault tip5966.5 +/- 100' M.D. TLBK 6361.5 +/- 50' no 2833 8.56 THRZ 6516.5 +/- 50' no 2903 8.57 -- TKLB 6756.5 +/- 50' no 3011 8.57 TKC4 6796.5 +/- 50' Oil 3212 9.09 S-128i Permit Application Page 4 TKC3E 6811.5 +/- 50' Oil 3218 9.09 TKC2E 6811.5 +/- 50' Oil 3218 9.09 TKC1C 6876.5 +/- 50' wet 3244 9.07 TKB_LCU 6901.5 +/- 50' no 3418 9.52 Kup B2 6976.5 +/- 50' no 3455 9.52 Kup B1 7001.5 +/- 50' no 3468 9.52 Kup A6 7026.5 +/- 50' no 3480 9.52 Kup AS 7036.5 +/- 50' wet 3485 9.52 Kup A4 7056.5 +/- 50' no 3495 9.52 TMLV 7101.5 +/- 50' no 3518 9.53 S-128i Permit Application Page 5 Well Control: 12 '/a" hole will be drilled with diverter. The 8 3/4" intermediate hole and 6 %e' 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 2500 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 Nabors 7es are attached to this permit to drill. 12-1/4" Surface 9-5/8" Casing BOPE A tested diverter system per AOGCC re•ulations , Maximum Anticipated BHP 1,314 psi @ 2,972'TVD, 8.5 ppg EMW Maximum Surface Pressure 1017 psi (0.10 psi/ft gas gradient to surface SV2 Planned BOP test pressure Function Test ' 9-5/8" Casing Test 3,500 psi surface pressure Kick Tolerance NA 8-3/4" Intermediate 7" Casing BOPE Hydril, 13-%", 5000 psi Maximum Anticipated BHP 3,212 psi @ 6,797'TVD, 9.1 ppg EMW Maximum Surface Pressure 2,533 psi (.10 psi/ft gas gradient to surface) (TKC4) Planned BOP test pressure Rams test to 4,000 psi/250 psi. Annular test to 2,500 psi/250 psi 7" Casing Test 4,000 psi surface pressure Integrity Test—9-W' Hole LOT after drilling 20'—50' of new hole Kick Tolerance 52 bbls with a 11.5 ppg FIT/LOT 6-'/8" Production 4-1/2" Liner BOPE Hydril, 13-%", 5000 psi Maximum Anticipated BHP 3,418 psi @ 6,901'TVD, 9.6 ppg EMW Maximum Surface Pressure 2,728 psi (0.10 psi/ft gas gradient to surface) (TKB) Planned BOP test pressure Rams test to 4,000 psi/250 psi. Annular test to 2,500 psi/250 psi 4-'/2" Liner Test None. Planned 1500 psi Liner Top Packer Test. !_Integrity Test—6-'/8" Hole FIT to 11.5 ppg EMW after drilling 20'—50' of new hole Kick Tolerance , Infinite with a 11.5 ppg FIT/LOT Planned Completion Fluids 9.9 ppg Corrosion Inhibited Brine/6.8 ppg 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 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. S-128i Permit Application Page 6 S-128i Drill and Complete Procedure Summary Pre-Rig Work: 1. Install Cellar Box and set 20" Conductor to+/- 108'. 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 MAXDRILn Mud and PU 4" DP as required and stand back in derrick. . 3. MU 12-1/4' drilling assembly with MWD/GR and directionally drill surface hole to TD approximately 50' TVD above the top of the SV1. If needed, perform wiper trip at the base of permafrost. CBU and condition hole as necessary, then POH for casing. • 4. Run and cement 9-5/8" surface casing. A TAM port collar may be run at 1000'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 8-3/4' drilling BHA with MWD/GR/RES/PWD and RIH to float collar. Pressure test 9-5/8" - 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. Drill to±200' above the HRZ, ensure mud is conditioned and properly weighted for shale stability, and perform short trip as needed. 8. Drill ahead to target TD, (below top TKC4). Circulate and condition fluid. Back-ream/MAD Pass as required,then POH to run casing. 9. Change to 7" rams and test prior to running casing. 10. Run 7" intermediate casing and cement in 1 stage. Bump plug and ensure that float holds. Pressure . test casing to 4000 psi for 30 minutes. • 11. MU 6-W build section BHA. RIH and tag top plug. Displace the casing with QUIKDRILn mud while drilling shoe track. Drill 20' of new formation and perform FIT. Drill build section to horizontal. POOH. 12. MU 6-W drilling assembly with MWD/GR/RES/Azi-Den/Neu/Density Caliper package (All real time). . 13. Drill ahead in Kuparuk B/C sands to TD. Circulate and condition mud. MAD-Pass / Backream as • required and POH for 4-1/2" liner run. 14. Run the 4-1/2" solid liner with swell packers and sliding sleeves. There will be 150' of liner lap into the . 7" intermediate casing. Set liner hanger and liner top packer as per BOT Rep and test LTP to 1500 psi for 10 minutes. Release from liner and displace well to brine. POOH and LD Drill Pipe. 15. RU E-Line and run GR/JB, then USIT from 4.5" liner top to surface. • 7'O c_ 16. Run the 4-1/2", 12.6#, L-80 C-II comp a ion tying into the 4-1/2" liner top. Land tubing hanger and RILDS. 17. Drop RHC ball and rod on rollers and set packer as per HES recommendation and test tubing to 4,000 psi and annulus to 4,000 psi. Shear the DCR valve and pump both ways to confirm circulation ability. 18. Install and test TWC. Nipple down the BOPE. Nipple up and test double master valves to 5000 psi. RU DSM and pull TWC. 19. 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. 20. 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. Install tree with electric valve. Pull BPV. 2. R/U Slickline and pull ball and rod/RHC. Pull VR Plugs. 3. Replace the DCR shear valve with a dummy GLV and set GL design: 4. RU CTU and circulate liner and open-hole annulus to diesel. CTU to open all sleeves. 5. Install wellhouses and flowlines. 6. Pump RG2401 (Blue-Goo) on top of surface casing cement. S-128i Permit Application Page 7 Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE I. Well Control/Reservoir Pressures: A. The Schrader Bluff reservoir is expected to be normally pressured at 8.7 ppg EMW. B. The Kuparuk sands pore pressure predictions range from 9.2 ppg to 9.6 ppg. Plan to maintain adequate mud weight for sufficient overbalance. II. Hydrates and Shallow gas: A. Free gas and/or gas hydrates may be present in the SV intervals while drilling the surface hole below the Permafrost base. Use standard operating procedures for hydrates, if encountered. Set surface casing below deepest SV sand hydrate zone to isolate gas bearing intervals behind cemented pipe in surface hole from intermediate hole section. III. Running Gravels: A. Unconsolidated sand, gravel, & cobbles and thawing permafrost could impede well angle build and casing running through permafrost. Keep moderate to low build angles until out of permafrost section. Keep flow rates low. Hazards include wood and cobbles, running gravels, lost circulation, and tight hole problems while drilling and running casing. See S Pad Data Sheet for details. IV. Faults Formation Where TVDSS Throw Encounter Fault MD Intersect Intersect Est. Throw Direction Uncertainty Fault#1 - SB_OBc 6,550 5180 20-40' NNE +1- 100' M.D. Fault#2- Below OBI. Base 7,775 5900 40' NNE +1- 100' M.D. Fault#3 - Kuparuk Horizontal section, near TKB_LCU 10,780 -6850 80'-100' SW +1- 100' M.D. Fault#4- Kuparuk Horizontal section,Cl/C2 Sand 11,400 -6864 20' SW +/- 100' M.D. V. Lost Circulation/Breathing: A. Faults # 1 and #2 will be penetrated in the intermediate hole section. Expected fault-related losses are minimal. B. Faults#3 and #4 will be penetrated in the production hole section. Large fault-related losses are expected for the fault#3 crossing. Fault#3 has not been intersected by another wellbore. Losses from fault#4 are expected to be minimal, if any. C. Breathing in the Colville has occurred on S-Pad in the past, but is not considered a major risk. Maintain ECD hardlines and good tripping practices to minimize risk of breaking down the formations. VI. 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. S-128i Permit Application Page 8 VII. Broaching A. Monitor adjacent wells for broaching while drilling surface hole. Surface broaching has not been an issue on the southern well row on S-pad, but has been an issue on the Northern well row. VIII. Kick Tolerance/Integrity Testing: Maximum Anticipated BHP 3,418 psi @ 6,901'TVD,_ 9.6 ppg EMW • Maximum Surface Pressure 2,728 psi (0.10 psi/ft gas gradient to surface) (TKB) Kick Tolerance(Intermediate) 52 bbls with a 11.5 ppg FIT/LOT Kick Tolerance(Production) 52 bbls with a 11.5 ppg FIT/LOT Planned BOP Test Pressure Rams test to 4,000 psi/250 psi. I ; Annular test to 2,500 psi/250 psi 9-5/8" Casing Test 3,500 •si surface pressure Integrity Test—8-3/4" Hole LOT after drilling 20'—50' of new hole 7" Casing Test 4,000 psi surface pressure Integrity Test—6-1/e" Hole FIT to 11.5 ppg EMW after drilling 20'—50' of new hole Planned Completion Fluids 1 9.9 ppg Corrosion Inhibited Brine/6.8 ppg Diesel IX. Stuck Pipe A. There is a risk of differential sticking while drilling the 8-3/4" intermediate section and while running 7" casing due to the permeable Schrader Bluff sands and the high mud weight. Keep the pipe moving as much as possible to reduce this risk. For the casing run, follow the centralizer program to help with standoff. X. Hydrogen Sulfide A. All S Pad gas lift wells are expected to have H2S levels in the 20 to 300 ppm range; result of PBU gas lift gas. This site should be treated as an H25 site with all the required precautions. Date of Well Name H2S LevelReading #1 Closest SHL Well H2S Level S-16 15 ppm 1/23/2004 #2 Closest SHL Well H2S Level S-17 20 ppm 3/11/2008 #1 Closest BHL Well H2S Level S-129 To be drilled 4Q before S-128i. #2 Closest BHL Well H2S Level S-125 20 ppm 12/8/2009 Max. Recorded H2S on Pad/Facility S-201 300 ppm 2/6/2010 Occasional H2S release(<50ppm) from injection Other Relevant H2S Data wells during WAG swaps. (H2S alarms from rigs,etc.) CONSULT THE S PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION S-128i Permit Application Page 9 M yy O C 7 O V d02 G820%001 4 Nmn� 22963 G d17 Q 463 636300 9O m NN N(700 m m ry a0 N O 6320 V Nl7 OJr mm N 9 OOm - N g 222002 t.22,,%p'N O hv�r (101mNm n 180p0 Nt200°fi 22cOy 1 (270(27 qm O�r m Cu 2.222 02022200 mmmmmm %mmmm .,(000082 a200200M000 A^^^. %�hh a 00000 t0.(0(0N NNNNN NN.N. ...W. 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O r Z f t a p d o3 o v. a ~ o o � 4 o o „ w o N ✓ § CO gE� 3 f f 0 0 O O O o o O O 0 O O N c`Q 1- «< «< N (u)OOOI:(w)I.=eleog g >>> -BP-PASSPORT - - --- Kritiobilision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan S-128 Project: Prudhoe Bay ND Reference: S-128 Plan @ 66.50ft(Nabors 7ES) Reference Site: PB-S Pact MD Reference: -- S-128 Plan-@ 66 50ft(Nabors 7ES) Site Error: 0.00ft North Reference: True Reference Well: Plan-S-128 _ Survey Calculation Method: Minimum--Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan S-128 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#14 S-128 Offset ND Reference: Offset Datum Reference Plan#14 S-128 I Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer Interpolation Method: MD IntervaT500ft Error Model: ISCWSA Depth Range: Unlimited Scan Method: Tray.Cylinder North Results Limitcd by: Maximum-eenter-centerdistance of 1,449.48ft Error Surface: Elliptical-Genie--- Survey Tool P-rogram Date 10/20/2010 — ——— —_— — ---------_-_._-_.__-___ From To (ft) (ft) Survey(Wellbore) _ _ Tool Name Description 28.50 800.00 Plan#14 S-128(Plan S-128) GYD-GC-SS Gyrodata gyro single shots 800.00 3,821.29 Plan#14 S-128(Plan S-128) MWD+IFR+MS MWD+IFR+Multi Station 3,821.29 9,112.12 Plan#14 S-128(Plan S-128) MWD+IFR+MS MWD+ IFR+Multi Station 9,112.12 12,523.35 Plan#14 S-128(Plan S-128) MWD*IFR*MS MWD+IFR+Multi Station 10/21/2010 1:41.56PM Page 2 of 4 COMPASS 2003.16 Build 73 BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan 5-128 Project: Prudhoe Bay ND Reference: S-128 Plan @ 66.50ft(Nabors 7ES) Reference Site: _ PB S Pad MD Reference: S-128 Plan @ 66.50ft(Nabors 7ES) Site Error: 0.00ft North Reference: True Reference Well: Plan.S--28 Survey-Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan S-128 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#14 S-128 Offset ND 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--WeNbore-Design (ftt___ (ftr (ft) (ft) PB S Pad Plan S-127-Plan S-127-Plan#3 464.75 465.00 31.54 8.81 22.74 Pass-Major Risk Plan S-130 SL1 -Plan S-130-Plan#2 S-130 414.64 415.00 121.25 7.83 113.43 Pass-Major Risk Plan S-131 SL2-Plan S-131-Plan#2 S-131 SL2 429.67 430.00 16.05 8.11 7.95 Pass-Major Risk Plan S-132-Plan S-132-Plan#1 S-132 1,576.41 1,565.00 174.36 29.96 147.33 Pass-Major Risk Plan S-133-Plan S-133-Plan#1 S-133 2,051.65 2,020.00 184.05 43.97 150.45 Pass-Major Risk Plan S-135-Plan S-135-Plan#1 S-135 464.83 465.00 250.34 8.64 241.71 Pass-Major Risk S-116-S-116-S-116 2,984.46 3,425.00 402.44 71.50 352.40 Pass-Major Risk S-126-S-126-S-126 559.01 560.00 60.18 10.18 50.00 Pass-Major Risk S-126_DIMS-S-126-S-126 66.50 66.50 59.61 1.37 58.23 Pass-Major Risk S-129-S-129-Plan#11 S-129 877.38 935.00 594.48 16.32 578.24 Pass-Major Risk S-129-S-129PB1 -Plan#7 S-129PB1 877.38--- 935.00 594.48 16.32 -- 578.24 Pass-Major Risk S-134-S-134-S-134 439.36 440.00 16.97 7.88 9.09 Pass-Major Risk S-15-S-15-S-15 742.04 745.00 61.59 15.63 45.96 Pass-Major Risk S-16-S-16-S-16 694.0-9- 695.00 45.68 TT.52 34.17 Pass-Major Risk S-17-S-17-S-17 872.51 875.00 158.29 15.67 142.62 Pass-Major Risk S-17-S-17A-S-17A 872.51 875.00 158.29 15.67 142.62 Pass-Major Risk S-17-S-17AL1 -S-17AL1 872.51 875.00 158.29 15.67 142.62 Pass-Major Risk S-17-S-17APB1 -S-17APB1 872.51 875.00 158.29 15.67 142.62 Pass-Major Risk S-17-S-17B-S-17B 872.51 875.00 158.29 15.67 142.62 Pass-Major Risk S-17-S-17C-S-17C 872.51 875.00 158.29 15.67 142.62 Pass-Major Risk S-17-S-17CPB1 -S-17CPB1 872.51 875.00 158.29 15.67 142.62 Pass-Major Risk S-17-S-17CPB2-S-17CPB2 872.51 875.00 158.29 15.67 142.62 Pass-Major Risk S-17_DIMS-S-17-S-17 66.50 66.50 155.16 1.37 153.79 Pass-Major Risk S-17_DIMS-S-17A-S-17A 66.50 66.50 155.16 1.37 153.79 Pass-Major Risk S-17_DIMS-S-17AL1 -S-17AL1 66.50 66.50 155.16 1.37 153.79 Pass-Major Risk S-17_DIMS-S-17B-S-17B 66.50 66.50 155.16 1.37 153.79 Pass-Major Risk S-17_DIMS-S-17C-S-17C 66.50 66.50 155.16 1.37 153.79 Pass-Major Risk S-17_DIMS-S-17CPB1 -S-17C PB1 66.50 66.50 155.16 1.37 153.79 Pass-Major Risk S-17 DIMS-S-17CPB2-S-17C PB2 66.50 66.50 155.16 1.37 153.79 Pass-Major Risk S-215-S-215-S-215 434.82 440.00 42.65 8.56 34.09 Pass-Major Risk S-217-S-217-S-217 249.49 250.00 76.54 5.44 71.10 Pass-Major Risk S-218-S-218-S-218 284.67 285.00 92.33 5.37 86.95 Pass-Major Risk S-218_DIMS-S-218-S-218 66.50 66.50 90.63 1.37 89.26 Pass-Major Risk S-40-5-40-S-40 803.19 805.00 191.05 12.39 178.80 Pass-Major Risk S-400-S-400-S-400 3,507.07 3,690.00 117.48 93.45 58.56 Pass-Major Risk S-400-S-400A-S-400A 3,669.91 3,820.00 196.70 187.43 56.78 Pass-Major Risk S-40A-S-40A-S-40A 803.20 805.00 191.03 12.39 178.78 Pass-Major Risk 10/21/2010 1:47:56PM Page 3 of 4 COMPASS 2003.16 Build 73 Project: Prudhoe Bay Site: PB S Pad Well: Plan S-128 Wellbore: Plan S-128 Design: Plan #14 S-128 From Surface to TD Scan interval 50 ft Scale 1 :50 All wells pass major risk 0 Pla - 1 c 330 Ai ki�i\�,��/ *iiii� 30 dallkink 4_ ii 11 lit/tr4 1 it 16‘ , ilk. k . .,,,,.. ,,,, Plan S-131 SL2/Plan#2 S-131 SL2 "ill,milkio•4 It\ , ��`-`® 300 �� 1� 60 1200r 0 t4, �, )- N., ,099 .' 416 .11, '--G NB All . 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(O Yes Q NO New Search LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28257 `lap Search for Status Plat Updates As of 11/04/2010 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: 08/11/1965 Total Acres: 2560.000 Date Initiated:05/28/1965 Office of Primary Responsibility: DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS NORTH SLOPE Last Transaction: AA-NRB ASSIGNMENT APPROVED Meridian: U Township: 012N Range: 012E Section: 25 Section Acres: 640 Search Plats Meridian: U Township: 012N Range: 012E Section: 26 Section Acres: 640 Meridian: U Township: 012N Range: 012E Section: 35 Section Acres: 640 Meridian: U Township: 012N Range: 012E Section: 36 Section Acres: 640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-52 12N 12E UM 25,26,35,36 2560.00 04-01-1977*** UNITIZED LEGAL DESCRIPTION*** PR UDHOE BAY UNIT ESTABLISHED T 12 N., R. 12 E., U.M. http://dnr.alaska.gov/projects/las/Case Summary.cfm?FileType=ADL&FileNumber=2825... 11/4/2010 Alaska Department of Natural Resources Land Administration System Page 1 of5 \Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources Alaska DNR Case Summary File Type: ADL File Number: 28258 Printable Case File Summary See Township,Range, Section and Acreage? ( New Search ® Yes 0 No LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28258 Search for Status Plat Updates As of 11/04/2010 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: 09/14/1965 Total Acres: 2560.000 Date Initiated: 05/28/1965 Office of Primary Responsibility:DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS NORTH SLOPE Last Transaction:AA-NRB ASSIGNMENT APPROVED Meridian: U Township: 012N Range: 012E Section: 27 Section Acres: 640 Search Plats Meridian: U Township: 012N Range: 012E Section: 28 Section Acres: 640 Meridian: U Township: 012N Range: 012E Section: 33 Section Acres: 640 Meridian: U Township: 012N Range: 012E Section: 34 Section Acres: 640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-53 12N 12E UM27,28,33,34 2560.00 04-01-1977***UNITIZED AND PARTICIPATING AREA LEGAL DESCRIPTION*** ENTIRE LEASE COMMITTED TO PRUDHOE BAY UNIT AND OIL RIM PA PRUDHOE BAY UNIT, TRACT 21,IN ENTIRETY OIL RIM PARTICIPATING AREA http://dnr.alaska.gov/projects/las/Case_Summary.cfm?FileType=ADL&FileNumber=2825... 11/4/2010 Alaska Department of Natural Resources Land Administration System Page 1 of/( Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources Alaska DNR Case Summary File Type: ADL File Number: 28261 6 Printable Case File Summary See Township,Range, Section and Acreage? Yes Q No New Search LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28261 ''lap__- Search for Status Plat Updates As of 11/04/2010 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: 08/11/1965 Total Acres: 2560.000 Date Initiated: 05/28/1965 Office of Primary Responsibility:DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS NORTH SLOPE Last Transaction: AA-NRB ASSIGNMENT APPROVED Meridian: U Township: O11N Range: 012E Section: 03 Section Acres: 640 Search Plats Meridian: U Township: 011N Range: 012E Section: 04 Section Acres: 640 Meridian: U Township: 011N Range: 012E Section: 09 Section Acres: 640 Meridian: U Township: 011N Range: 012E Section: 10 Section Acres: 640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-5611N 12E UM 3,4,9,10 2560.00 04-01-1977*** UNITIZED LEGAL DESCRIPTION*** PRUDHOE BAY UNIT TRACT 48 http://dnr.alaska.gov/projects/las/Case_Summary.cfm?FileType=ADL&FileNumber=2826... 11/4/2010 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 PAW 5-/ ?Y PTD# 2/0/5-9 Development v/ Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: ,e�'i 4/e ' TA, POOL: ,glha. 4 /ere 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 must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and 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. Rev: 1/11/2008 0 •O O p� a •a , . Ti c . C (!i c.) al N a 0 CC -c E 45 c c Q cE a o . ,of . a . o' @ co- 0 : v>- o y V/ OC ' N N. 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