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Home My WebLink About211-048New Plugback Esets 6/25/2024 Well Name API Number PTD Number ESet Number Date 1J-127 PB1 50-029-23306-70-00 206-047 T39006 8-22-2006 1J-127 PB2 50-029-23306-71-00 206-047 T39007 8-22-2006 1J-170 PB1 50-029-23310-70-00 206-062 T39008 8-22-2006 1J-170 PB2 50-029-23310-71-00 206-062 T39009 8-22-2006 2K-28AL1 PB1 50-103-20385-71-00 211-134 T39010 10-13-2011 2K-28AL1 PB2 50-103-20385-72-00 211-134 T39011 10-13-2011 PBU 13-27B PB1 50-029-20947-70-00 211-048 T39012 8-11-2011 PBU 13-27B PB2 50-029-20949-71-00 211-048 T39013 8-11-2011 15-02B PB1 50-029-20697-71-00 206-072 T39014 3-7-2008 15-02B PB2 50-029-20697-72-00 206-072 T39015 3-7-2008 CD2-07 PB1 50-103-20472-70-00 203-187 T39016 2-22-2006 CD2-07 PB2 50-103-20472-71-00 203-187 T39017 2-22-2006 E-23C PB1 50-029-21763-71-00 211-053 T39018 9-30-2011 E-23C PB2 50-029-21763-72-00 211-053 T39019 9-30-2011 NS-25 PB1 50-029-23181-70-00 203-166 T39020 3-22-2004 NS-25 PB2 50-029-23181-71-00 203-166 T39021 3-22-2004 OP18-08 PB1 50-029-23449-70-00 211-059 T39022 10-14-2011 OP18-08 PB2 50-029-23449-71-00 211-059 T39023 10-14-2011 PBU 13-27B PB1 50-029-20947-70-00 211-048 T39012 8-11 -2011 PBU 13-27B PB2 50-029-20949-71-00 211-048 T39013 8-11 -2011 RECEIVED • 2.`\- oLk% 2fC-1 o(o OCT 19 2017 WELL LOG TRANSMITTAL#904242556 AOGCC To: Alaska Oil and Gas Conservation Comm. October 9, 2017 Attn.: Makana Bender 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 DATA zo E M K.BENDER RE: Leak Detect Log: 13-27B Run Date: 8/17/2017 The technical data listed below is being submitted herewith. Please address any problems or concerns to the attention of: Chris Gullett, Halliburton Wireline & Perforating, 6900 Arctic Blvd., Anchorage, AK 99518 13-27B Digital Log Image files 1 CD Rom 50-029-20949-02 Leak Detection Log 1 Color Log 50-029-20949-02 SCANNED r? , PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Halliburton Wireline &Perforating Attn: Chris Gullett 6900 Arctic Blvd. Anchorage, Alaska 99518 Office: 907-273-3527 FRS_ANC@halliburton.com Date: Signed: / / ✓aiza1'uc✓ / ..g+h"-""( • Wallace, Chris D (DOA) From: AK, GWO Well Integrity Engineer <AKGWOWellSiteEnginee@bp.com> Sent: Thursday,August 17, 2017 5:31 AM To: AK, GWO Well Integrity Engineer;AK, OPS EOC Specialists;AK, OPS FS3 DS Ops Lead; AK, OPS FS3 Facility OTL;AK, OPS FS3 Field OTL;AK, OPS FS3 OSM;AK, RES GPB East Wells Opt Engr;AK, RES GPB West Wells Opt Engr;AKOpsProdEOCTL; G GPB FS3 Drillsites; Odom, Kristine;Vandergon, Mark A;Vohra, Prachi;AK, GWO DHD Well Integrity;AK, GWO SUPT Well Integrity;AK, OPS FF Well Ops Comp Rep;AKIMS App User; Cismoski, Doug A; Daniel, Ryan; Dempsey, David G; Hibbert, Michael;Janowski, Carrie; Montgomery,Travis J; Munk, Corey; Obrigewitch, Beau; O'connor, Katherine; Sternicki, Oliver R;Worthington,Aras J Cc: Regg,James B (DOA);Wallace, Chris D (DOA) Subject: NOT OPERABLE: Producer 13-27 (PTD#2110480) Failed MIT-IA All, Producer 13-27 (PTD#2110480)failed a diagnostic CMIT-TxIA on 08/16/17 indicating a potential loss of one or more barriers. The well was left secured with a tubing tail plug with a passing MIT-T on 08/16/2017. At this time the well is classified as Not Operable and will remain shut in until barriers are confirmed or restored. Plan forward/Work Completed; 1. Slickline: Set TTP-Complete 2. Fullbore: MIT-T—Pass 3. Fullbore: CMIT-TxIA—Fail 4. Slickline: Perform LDL-Complete 5. Production Engineer:Additional Diagnostics. Please respond with any questions, Matt Ross (Alternate: Josh Stephens) Well Integrity Engineering Office 907-659-8110 Cell 907-980-0552 SCANNED AUG 2 I QST Harmony 4530 1 STATE OF ALASKA .SKA OIL AND GAS CONSERVATION COM. �SION REPORT OF SUNDRY WELL OPERATIONS 1 Operations Abandon U Repair Well Lf Plug Perforations U Perforate Lf Other V sC 7 CJ3/-' Performed Alter Casing ❑ Pull Tubing❑ Stimulate-Frac ❑ Waiver ❑ Time Extension❑ Change Approved Program ❑ Operat.Shutdown❑ Stimulate-Other ❑ Re-enter Suspended WOO 2 Operator 4 Well Class Before Work 5 Permit to Dnll Number Name BP Exploration(Alaska),Inc Developments Exploratory ❑ 211-048-0 3 Address P 0 Box 196612 Stratigraphies Service ❑ 6.API Number Anchorage,AK 99519-6612 50-029-20949-02-00 7 Property Designation(Lease Number). 8.Well Name and Number: ADL0028316 PBU 13-27B 9 Logs(List logs and submit electronic and printed data per 20AAC25.071): 10 Field/Pool(s). PRUDHOE BAY,PRUDHOE OIL 11 Present Well Condition Summary: RECEIVED Total Depth measured 14970 feet Plugs measured 13120 feet true vertical 9090 27 feet Junk measured None feet M AY 0 4 2015 Effective Depth measured 13120 feet Packer measured See Attachment feet AG true vertical 9039 84 feet true vertical See Attachment feet �,I Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20"91 5#H-40 33 5-113 5 33 5-113 5 1490 470 Surface 2600 53 13-3/8"72#L-80 36 05-2636 58 36.05-2636.3 4930 2670 Intermediate 1846 6 9-5/8"47#L-80 32 02-1878 62 32 02-1878 41 6870 4760 Production None None None None None None Liner 7038 18 7"26#L-80 3250.59-10288.77 3238 56-8914 03 7240 5410 Perforation depth Measured depth 11400-11650 feet 12500-12980 feet 13260-13350 feet 14390-14870 feet True Vertical depth 9008 37-9008 99 feet 9027.75-9037.64 feet 9043 16-9045.87 feet 9065.76-9087.85 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13CR85 29.89-10136 51 29 89-8781 02 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): 2 15 ANNE© i��Y 1 .� D 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 216 223 3260 453 Subsequent to operation 293 195 2274 425 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 s Gas ❑ WDSPI IJ GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUGO 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 N/A Contact Nita Summerhays Email Nita.Summerhays((�bp corn Pnnted Name NZ itaaSSummerhay Title Petrotechnical Data Engineer Si atdr= " _ 'r��- Phone 564-4035 Date 4/30/2015 ATL 5/6/15- RBDMS MAY - 6 2015 se, , Form 10-404 Revised 10/2012I Submit Original Only .1 .) - -- Daily Report of Well Operations ADL0028316 ACTIVITYDATE I SUMMARY CTU 8 Scope;GR/CCL/Drift/Set CIBP MOL. Stand by on Well support reconfigure p-sub 3/28/2015 ***Job continued on WSR 03/29/15*** CTU 8 Scope; GR/CCL/Drift/Set CIBP Spot unit in begin RU, Function test BOP's. MU BKR CTC, MHA 3/4"disco, circ sub 5k burst disc, PDS w/carrier, x-over, Nozzle, OAL=14.78' (MAX OD 3.7') Sat down at 10464'. attempt to jet thru several times., could not penetrate. suspect scale pooh. RIH w/ BHA; 2.13" ctc, dfcv,jar, disco, circ sub, motor, 3.63" 3 blade junk mill (oal= 20.11') Dry tag obstruction at 10482'. Establish free spin 1360 psi. Milled down to 13501 CTM, did not see any motor work. POOH. 3/29/2015 ***job continued on 03/30/15*** Continued on 03/29/15CTU 8 Scope; GR/CCL/Drift/Set CIBP MU BKR CTC, MHA 3/4"disco, circ sub 5k burst disc, PDS w/carrier, x-over, Nozzle, OAL=14.38' (MAX OD 3.5). Saw no issues RIH w/3.5" DJN down to 13499' ctm. PUH logging 40 fpm from 13499.9'- 12000' CTM, Painted white flag at 13070'. POOH. Data good with -7' correction. RIH w/2.13"ctc,dfcv,disco, 2.57" crossover, 2.63"setting tool, 3.5"adapter, 3.59" BOT CIBP (oal = 12.83') Set top of plug at 13120'. pooh. Perform Weekly BOP test. 3/30/2015 **Well freeze protected with 38 bbls of 60/40 MeOH** Continued from 03/30/15 CTU 8 Scope; GR/CCL/Drift/Set CIBP Weekly Bop test 3/31/2015 **job complete** FLUIDS PUMPED BBLS 135 60/40 METH 461 1% SLICK KCL W/SAFELUBE 596 TOTAL Packers and SSV's Attachment ADL0028316 SW Name Type MD TVD Depscription 13-27B PACKER 3250.59 3238.56 7" Baker ZXP Top Packer 13-27B PACKER 10015.63 8675.77 4-1/2" HES TNT Perm Packer I — TREE=' 4-1/16"aW WB LFEAD= FMC S !Y NOTES:WELL ANGLE>70°@ 10483'. ACTUATOR= BAKER C 13-2 7 B """4-1/2"CHROME TBG&LNR"'" O .ELEV= 83' BF.ELEV= ? I I KOP= 2800' 1849' H9-5/8"EXT CSG FKR,D=8.700" Max Angle= 97"@ 10872' 20"CONDUCTOR -- 81 J j 1863'-1874 -{9-5/8"BKR CSG PATCH,13=9.610 Datum MD= 10253' Datum TVD= 8800' SS 91.5#'H-40, D=19.124" / , , 2007' H 4-1/2"HES X NP,ID=3.813" 9-5/8"CSG,47#,L-80 HYD 563,D=8.681" 1849' 13-3/8"CSG,72#,L-80 BUTT,13=12.347" - 2634' 9-5/8"W1-LSTOOC(07/02/11) H 3400' 1 3248' -9-5/8"X 7"BKR ZXP LTP w/11'RIR �P•/ &BKR FLEXL00(HGR,13=6.290" 9-5/8"CSG,47#,L-80 BTC,D=8.681" -{ -3421 ( I 9-5/8" MLLOUT WINDOW(13-27B) 3404'-3421' 9-5/8"EZSV(07/01/11) H 3423' GAS LFT MAFORE1S ST MD TVD DEV TY PE VLV LATCH FORT DATE 5 3814 3774Ir23 KBG2 DOME BK 16 03/30/14 4 6491 5838 r 43 KBG2 DOME BK 16 03/30/14 Minimum ID =3.725" @ 10124' 3 7976 6953'41 KBG2 SO BK 28 02/28/15 4-1/2" HES XN NIPPLE L 2 9085 7844'25 KBG2 DMY BK 0 03/30/14 1 9783 8472'29 a KBG2 OMY BK 0 08/04/11 ' ' 9984' -4-1/2"FES X NP!13=3.813" S X 10013' --{7"X 4-1/2"HES TNT PKR D=3.856" 10048' -4-112"HES X Ng?D=3.813" I 10124' -14-1/2"FES XN NP,13=3.725" TOP OF 4-1/2""LNR H 10131' 10131' --I 7"X 5"BKR HRD-E ZXP�1 LTP w/FBR,13=4.190" 4-1/2"TBG, 12.6#,13CR-85 VAM TOP, H 10137' 10137' H4-1/2"WLEG,D=3.958" .0152 bpf,D=3.958" H ELM)TT NOT LOGGED '•. 7"LNR,26#,L-80 VAM TOP,.0383 bpf,13=6.276" H 10286' r.<1 10147' H 7"X 5"BKR FLEX LOCI{LNR FiGR D=4.210" 10157' 5"x 4-1/2"XO,D=3.920" PERFORATION SUMMARY , REF LOG:SCHLUMBERGER VISION SERVICES MVVD GR/RESISTNITY/DEN/N3J LOG ON 7/31/11 ANGLE AT TOP PEW 93'@ 11400' R Nate:Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sgz SHOT SQZ 13120' -14-1/2"BKR CIBP(03/30/15) 2-718" 6 11400- 11650 0 08/03/11 2-7/8" 6 12500- 12980 0 08/03/11 2-7/8" 6 13260- 13350 C 08/03/11 2-7/8" 6 14390- 14870 C 08/03/11 .alt& 14882' - PBTD 4-112'LNR 12.6#,13CR-85 VAM TOP, -I 14968' �•%�• .0152 bpf,ID=3.958" ..•,•-•,4 DATE REV BY COMIVENTS DATE REV BY' COMMENTS A I DHOE BAY UNIT 07/29/83 ORIGINAL COMPLETION 04/08/14 OLWJMD GLV 00(03/30/14) WELL_ 13-276 06/03/97 N3S CTD SIDETRACK(13-27A) 03/25/15 BSE/PJC GLV CTO PERMIT No: 2110480 01/21/10 D16 RINO 04/03/15 RM-VJMD SET CEP(03/30/15) API No: 50-029-20949-02 08106/11 N7ES SIDETRACK(13-27B) SEC 14,T1ON,R14E,526'FSL& 1185'Fa 10/14/11 MPI PJC FINA L DRL.G COR! CT1ONS ii 04/04/12 JSM/JMD GLV 00(04/02/12) ,.� BP Exploration(Alas 44) ';{ i I 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. JL - 04 Well History File Identifier Organizing (done) ❑ Two-sided ❑ Rescan Needed RESCAN: OVERSIZED: NOTES: for Items: ❑ Mas: rayscale Items: ogs: ❑ Poor Quality Originals: ❑ Other: ❑ Other: BY: Maria Date: 7/09.— /s/ of Project Proofing BY: Maria Date: I /s/ u , Scanning Preparation S x 30 = /SD + ` = TOTAL PAGES /SZ BY: MD Date: (Count does not include cover meet) • /s/ u Production Scanning c Stage 1 Page Count from Scanned File: iV..(Count does include cover heet) Page Count Matches Number in Scanni g Preparation: YES NO BY: Maria Date: 7apt,, /s/ 11,4f) Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: /s/ Stage 2 Additional Well Reports: ✓YES NO TOTAL PAGES: 33 Digital version appended by: Meredith--17*) Michal Date: /s/ Final Page Count: Stage 1 + Stage 2: TOTAL PAGES: ` Qt. Scanning is complete at this point unless rescanning is required. ReScanned - BY: Maria Date: /s/ Comments about this file: Quality Checked 7/8/2014 Well History File Cover Page_20140708.doc o o 9 •F O O >, C o C J N O O O ) 9 = j QS d d mo l LLj • N J '�R 1 N y d LL(/ a a To CC o 7a - • a w > C wo Z ° `�no W 11.1 -1 En 5LLnC) 1 -a ° o m C • 0 NII ? m NC O C O C oN C � d la= a fi W (n° 'C 9 a) 0 0ai m m ' -aa�w? Lo N o o: '�L t LL LL C7 o J L z° z o o id �' °Qm oo ° o 00 0 0 °o a : ° Lt 0 V.."Q. 5J 1- J 2J 5 2 50W c a T 0 V C o o > � d a) Ci 0 C. 0 0 0 0 0 0 0 0 J N o I N N N N N N N N N N N O) CNI V �. 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(71 N (71 N CA N C71 N Ut N Ut t -i3 -I3 -13 -13 -13 3 -i 3 ss": D 0 D DD v 0 - _ _ _ _ _ _ _ _ _ _ _ _ _ _ '0 • M m m m m m m 0 0 0 0 D 0 0 0 0 0 0 0 0 0 `m 4 0 j ii co �y 4 CO D 0 v x W f,� 7 n (D co co s ' -' -` IQ N N N N j r, P) W W W W i �fi h++ s ., L � woc-c- LLLLLLLL � `- sv p, ft O N (D C C N (D G) 01 d �""' Cu' N �� 7 7 "O 'C 7 7 7 7 C C C C C C m o n D N C k.:,,‘IN ' Al Al N N ^y O P) 7C C_) Lo CT t 0 UiCD H t C� to N N \ r (U 0 N Z c o i:4,1 . , Q. CD .< v C) CD N 4O. e-ry-• 0 O\ N r c �. ... p, •-(.- ., . ,`, - O "J .-. /\) Is w " k' rn vvvvovo i. � � N co CD O'f i1 01 • RECEIVE® • Date: 10-05-2011 2221-6 OCTbp 4 6 2011 Transmittal Number: 93213 Alaska Oil&Gas Cons. Commission Anchorage BPXA WELL DATA TRANSMITTAL **** The enclosed CD-ROM supersedes the previously distributed End of Well CD-ROM for 13-27B. All previously delivered copies should be replaced by this Final Revision. **** Enclosed are the materials listed below. If you have any questions,please contact Nita Summerhays at(907)564-4035 Delivery Contents Top Bottom SW Name Date Company Run Depth Depth Description END OF WELL- FINAL 13-27B 07-06-2011 BPXA REVISION CD Please Sign and Return one copy of this transmittal. Thank You, Nita Summerhays Petrotechnical Data Center SCOW) MAR 1 4 2018 ConocoPhillips Sandy Lemke/Ricky Elgaricio EXXON Mobil File Room DNR Corazon Manaois State Of Alaska Christine Shartzer Petrotechnical Data Center LR2-1 900 E.Benson Blvd. PO Box 196612 Anchorage,AK 99519-6612 Saltmarsh, Arthur C (DOA) From: Hubble, Terrie L [Terrie.Hubble@bp.com] Sent: Wednesday, October 05, 2011 3:54 PM To: Saltmarsh, Arthur C (DOA) Subject: PBU 13-27B/ PTD#211-048 Hi Art, Please reference the following well: Well Name: PBU 13-27B Permit#: 211-048 API #: 50-029-20949-02-00 Top Perf MD: 11,400' Bottom Perf MD: 14,870 This well began Production on September 28, 2011 Method of Operations is: Flowing Date of Test: 09/28/2011 Hours Tested: 8 24-Hour Rate/Oil-Bbl: 3,651 24-Hour Rate/Gas-Mcf: 8,328 24-Hour Rate/Water-Bbl: 1,179 Test Rate/Oil-Bbl: 1,217 Test Rate/Gas-Mcf: 2,276 Test Rate/Water-Bbl: 393 Choke Size: 128 Gas-Oil Ration: 2,281 Flow Tubing Pressure: 364 Casing Pressure: 1,500 Oil Gravity-API: Not Available 1 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSIQN 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: 20AAC 25.105 20AAC 25.110 0 Development 0 Exploratory 0 GINJ 0 WINJ 0 WAG 0 WDSPL 0 Other No.of Completions One 0 Service 0 Stratigraphic 2. Operator Name: 5.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number: BP Exploration(Alaska)Inc. 8/6/2011 211-048 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 7/3/2011 50-029-20949-02-00 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number. Surface: 7/29/2011 PBU 13-27B 4754'FNL, 1185'FEL, SEC. 14,T1 ON, R14E, UM 8. KB(ft above MSL): 83' 15.Field/Pool(s): Top of Productive Horizon: 2612'FNL,4266'FEL, SEC.24,T10N, R14E, UM GL(ft above MSL): 49.83' Prudhoe Bay Field/Prudhoe Bay Total Depth: 9.Plug Back Depth(MD+TVD): Oil Pool 990'FNL,349'FEL, SEC.26,T10N, R14E, UM 14882' 9088' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation: Surface: x- 686068 y- 5930564 Zone- ASP4 14970' 9090' ADL 028315&028316 TPI: x- 688346 y- 5927482 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 687076 y- 5923792 Zone- ASP4 None 18.Directional Survey: ®Yes 0 No 19.Water depth,if offshore: 20. Thickness of Permafrost(TVD): (Submit electronic and printed information per 20 AAC 25.050) N/A ft MSL 1900'(Approx.) 21.Logs Obtained (List all logs here and submit electronic and printed information per 20 MC 25.071): 22. Re-Drill/Lateral Top Window MD/TVD: DIR/GR/RES/PWD/ADN/ACAL, DIR/GR/RES/PWD 3404' 3386' 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT.PER FT. GRADE TOP BOTTOM Top BOTTOM SIZE CEMENTING RECORD PULLED 16" 91.5# H-40 Surface 80' Surface 80' 30" 2115#Poleset 61:.4i)13-3/8" 72# L-80 Surface 2633' Surface 2633' 17-1/2" 2700 sx Coldset III.400 sx Coldset II Z 9-5/8" 47# L-80 Surface 3404' Surface 3386' 12-1/4" 500 sx Class'G'.300 sx Coldset I 7" 26# L-80 3248' 10286' 3236' 8912' 8-1/2" 228 sx Class'G' • 4-1/2" 12.6# 13Cr85 10131' 14968', 8776' 9090' 6-1/8" 532 sx Class'G' , 24. Open to production or injection? 0 Yes 0 No 25. TUBING RECORD If Yes,list each interval open SIZE DEPTH SET(MD) PACKER SET(MD/TVD) (MD+TVD of Top&Bottom;Perforation Size and Number): 2-7/8"Gun Diameter,6 spf 41/2", 12.6#, 13Cr 10137' 10113'/8761' MD TVD MD TVD 11400'-11650' 9009'-9028' _ 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. 12500'-12980' 9038'-9043' j OMP I:710 13260'-13350' 9043'-9046' iD TE . DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED 14390'-14870' 9066'-9088' 2200' Freeze Protected w/Diesel f . 1 27. PRODUCTION TEST Date First Production: Method of Operation(Flowing,Gas Lift,etc.): Not on Production Yet N/A Date of Test: Hours Tested: Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Test Period Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 24-Hour Rate 28. CORE DATA Conventional Core(s)Acquired? 0 Yes 0 No Sidewall Core(s)Acquired? 0 Yes 0 No If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and presence of oil,gas or water (submit separate sheets with this form,if needed). Submit detailed descriptions,core chips,photographs and laboratory analytical results per 20 MC 250.071. RECEIVE ' None RBDMS SEP 0 9 2011 SEP 0 8 2011 ,Alaska Oil 8.Gas Cnns.Coimission Form 10-407 Revised 12/2009 CONTINUED ON REVERSE Submit Original Only OT 29. GEOLOGIC MARKERS(List all formations and mark 'countered): 30. I CATION TESTS NAME MD ND Well Tested? 0 Yes ®No Permafrost Top If yes,list intervals and formations tested,briefly summarizing test Permafrost Base results. Attach separate sheets to this form,if needed,and submit detailed test information per 20 AAC 25.071. Sag River 10281' 8907' None Shublik 10302' 8925' Sadlerochit 10394' 8996' 45N 10440' 9022' 45P 10455' 9029' 44N 10490' 9043' 44P 10498' 9045' 44P 10745' 9043' 45P 10867' 9029' 45N 11716' 9014' 45P 11770' 9019' 45P 12026' 9030' 45N 12130' 9029' Top Sadlerochit I Base Sublik C 14230' 9064' Top Sadlerochit 14409' 9067' MHO 14742' 9084' HOT 14835' 9087' Formation at Total Depth(Name): 31.List of Attachments: Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys 32.I hereby certify that the foregoing true and correct to the best of my knowledge. 09/0 7/ Signed: Terrie Hubble )(,Q I Title: Drilling Technologist Date: j t PBU 13-27B 211-048 Prepared By NameMUmber. Terrie Hubble, 564-4628 Well Number Permit No./Approval No. Drilling Engineer: Jacob Thompson,564-5579 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 BP AMERICA Leak-Off Test Summary Well Name: 13-27B Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) (ppg) 07/02/11 LOT 3,404.00 3,386.19 10.00 342.00 2,101.10 11.94 07/14/11 FIT 10,286.00 8,911.00 8.40 741.00 4,629.40 10.00 Page 1 of 1 North America -ALASKA- BP Page 1 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.:NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27©83.O0ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 6/26/2011 00:00 - 03:00 3.00 MOB P PRE ACCEPT NABORS 7ES RIG CHARGES @ 00:00 ON 6/26/2011. CONTINUE GENERAL RIG DOWN OPERATIONS ON X-22 IN PREPARATION FOR RIG MOVE TO DS 13-27B. -WSL OPEN WELLWORK TRANSFER PERMIT WITH DS 13 OPERATOR. -COMPLETE RIG FLOOR RIG DOWN CHECKLIST. LAYDOWN CATTLE CHUTE. -DISCONNECT AND SECURE TOP DRIVE AT RIG FLOOR. RU BRIDLE LINES TO BLOCKS. -FIRE UP COLDSTART GENERATOR AND DISCONNECT PIT MODULE. PULL MODULE AWAY FROM SUB AND STAGE ON X PAD -PULL CUTTINGS BOX AWAY FROM RIG. WELL PROGRAM PURPOSE: -DECOMPLETION&ABANDONMENT OF 13-27A(UNABLE TO PRODUCE DUE TO CMT • IN LNR). -DRILLING&COMPLETION OF 13-27B SIDETRACK,MAINTAINING OPTIONS FOR FUTURE SIDETRACK. 03:00 - 04:00 1.00 MOB P PRE PJSM. LAYDOWN DERRICK AND SECURE FOR RIG MOVE. 04:00 - 10:00 6.00 MOB P PRE MOVE RIG FROM X PAD TO DS 13. STAGE RIG ON PAD,WAITING ON GRAVEL AND RIG MAT WORK AROUND WELL 13-27B. -SECURITY ESCORT PROVIDE FOR ROAD TRAVEL. -RIG MATS LAID FOR MAJORITY OF X PAD ACCESS ROAD. NO ROAD STABILITY ISSUES ENCOUNTERED DURING RIG MOVE. 10:00 - 12:00 2.00 MOB P PRE RIG DOWN AUXILLARY MODULES ON X PAD AND PREPARE TO MOVE TO DS 13. 12:00 - 16:00 4.00 MOB P PRE MOVE CAMP,SHOP AND PIT MODULE TO DS 13. SPOT SATELLITE CAMP&RIG UP. 16:00 - 19:00 3.00 MOB N WAIT PRE WAIT ON GRAVEL WORK AROUND WELL. -N7ES RIG STAGED ON DRILLSITE 13 -CANRIG MODEL 6027E-939,600 HP,275 TON TOP DRIVE DUE FOR 3 YEAR INSPECTION. -CHANEGOUT OF TOP DRIVE REQUIRES MOBILE CRANE OPERATION TO PICK OLD AND SET REPLACEMENT TOP DRIVE ON RIG. -WINDS GUSTING TO OVER 20 MPH. LEVEL 2 RISK ASSESSMENT REQUIRED. -CALLS MADE TO OPERATION SUPERINTENDENTS, BP DRLG HSE,BP LIFTING AUTHORITY. -BEN CUARESMA, BP LIFT AUTHORITY,TO GIVE VERBAL APPROVAL AFTER PRE-JOB AND RISK ASSESSMENT/LIFT PLAN COMPLETED. Printed 9/6/2011 1.18:30PM Orth America -ALASKA- BP Page 2 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:00 - 20:00 1.00 MOB N WAIT PRE PEAK LATTICE CRANE ON LOCATION. -MEETING WITH WSL,PEAK PUSHER, NABORS SAFETY AND NABORS TOOLPUSHERS. -WIND SPEED OVER 20 MPH. AIRPORT WIND SPEED 28 MPH. -DECISION MADE TO NOT PERFORM LIFT UNTIL WINDS SUBSIDE,CRANE TO WAIT ON LOCATION. -PEAK TO GENERATE LIFTING PLAN PRIOR TO LIFT. 20:00 - 00:00 4.00 MOB N WAIT PRE CONTINUE TO WAIT ON GRAVEL BUILDUP AROUND WELL 13-27B -TOOL SERVICES AND ROADS/PADS WORKING ON 40"BUILDUP AROUND WELL MADE OF GRAVEL AND RIG MATS. -RIG CREWS PREPPING TOP DRIVE FOR REMOVAL FROM RIG. -NEW ROLLER INSTALLED ON OFF DRILLER SIDE TUGGER. -BORESCOPE INSPECTION OF BOP STACK INTERNAL ELEMENTS. 6/27/2011 00:00 - 08:00 8.00 MOB N WAIT PRE CONTINUE TO WAIT ON GRAVEL BUILDUP AROUND WELL 13-27B -7ES RIG STAGED ON PAD -TOOL SERVICES&ROADS/PADS CONTINUE TO BUILDUP PAD 40"AROUND WELL 13-27B. -WELLHEAD&TREE LINED ON THREE SIDES WITH RIG MATS. FOURTH SIDE(TOWARDS FLOWLINE)IS OPEN TO ALLOW ACCESS TO WELLHEAD WITHOUT CONFINED SPACE HAZARD. -AUXILIARY BUILDINGS AND SUPPORT EQUIPMENT SPOTTED ON DRILLSITE 13. -PEAK CRANE ON LOCATION,WAITING ON WINDS TO SUBSIDE FOR CHANGEOUT TOP DRIVE -RIG CREW CONTINUING TO CLEAN& PREPARE TOP DRIVES FOR CHANGEOUT. DISCONNECT KELLY HOSE AND SERVICE BUNDLE. -REBUILD 2"DEMCO BLEED VALVE ON RIG FLOOR MUD MANIFOLD. -REPLUMB AIR LINE TO CELLAR. 08:00 - 10:00 2.00 MOB N WAIT PRE CONTINUE TO WAIT ON GRAVEL BUILDUP AROUND WELL 13-27B -PEAK TRUCK PUSHER AND CRANE OPERATOR ARRIVE ON LOCATION AND DEVELOP LIFT PLAN FOR TOP DRIVE. -PRE-JOB MEETING HELD WITH WSL, TOOLPUSHER, RIG CREW,CRANE OPERATOR, RIGGER,PEAK HSE REP&BP DRILLING HSE REP TO DISCUSS LIFT PLAN. -SPOT CRANE AND PICKUP SLIGHT TENSION ON TOP DRIVE TO CONFIRM WEIGHT FOR LIFT PLAN. TOP DRIVE WEIGHT=23 KLBS. -POSITION OF EACH CREWMEMBER DURING JOB REVIEWED. Printed 9/6/2011 1:18:30PM )rth America -ALASKA- BP Page 3 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.:NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth i Phase Description of Operations (hr) (ft) 10:00 - 13:00 3.00 MOB N WAIT PRE PEAK LATTICE CRANE CHANGEOUT TOP DRIVE ON RIG N7ES -CANRIG TOP DRIVE(SER#220)PICKED FROM TORQUE TRACKS ON RIG FLOOR AND LOWERED TO GROUND. -SERVICED CANRIG TOP DRIVE FROM 2ES (SER#211)RAISED TO RIG FLOOR AND GUIDED ONTO TORQUE TRACKS. -HYDRAULIC IBOP ON NEW TOP DRIVE SWAPPED OUT FOR PNEUMATIC IBOP FROM 7ES TOP DRIVE. -RDMO PEAK CRANE. 7ES CANRIG TOP DRIVE SENT IN FOR THREE YEAR INSPECTION. 13:00 - 00:00 11.00 MOB N WAIT PRE CONTINUE TO WAIT ON GRAVEL BUILDUP AROUND WELL 13-27B -RAISE DERRICK, RIG DOWN BRIDLE LINES, RU BLOCKS TO TOP DRIVE, RU KELLY HOSE &SERVICE BUNDLE. RAISE CATTLE CHUTE. -RE-CONNET TOP DRIVE. FUNCTION TEST AND TROUBLESHOOT AS NECESSARY. -QUILL THREADS ON NEW TDS INSPECTED BY TUBOSCOPE. VARIOUS MAINTENANCE ACTIVITIES ACCOMPLISHED ON THE RIG AND IN PIT MODULE. -NOTIFICATION-AOGCC REP JEFF JONES NOTIFIED OF IMPENDING BOPE TEST @ 19:22 HRS(MESSAGE). MR.JONES RETURNED CALL AND WAIVED STATE'S RIGHT TO WITNESS TEST. 6/28/2011 00:00 - 03:00 3.00 MOB N WAIT PRE WAIT ON PAD PREP WORK AROUND WELL 13-27. -DOUBLE STACK RIG MATS ON GRAVEL PAD AROUND WELL 13-27. RIG MATS LAID ON ACCESS ROAD TO BACK OF DS 13 FROM FRONT OF DRILLSITE. 03:00 - 05:00 2.00 MOB P PRE MOVE RIG FROM STAGING AREA ON FRONT OF DRILLSITE TO WELL 13-27. -GRAVEL BUILDUP AND RIG MAT WORK _AROUND WELL COMPLETE @ 03:00. 05:00 - 06:00 1.00 MOB P PRE SPOT RIG OVER WELL. -WH&TREE PRESSURES: OA=IA=TBG=0 PSI. OA CEMENTED TO SURFACE DURING RWO IN FEB 2010. 500 PSI MIT-OA IN MAR 2010 CONFIRMED CEMENT IN OA. -ALL PRE-RIG WORK CONFIRMED COMPLETE. 4-1/2"CAMERON TYPE H BPV • SET AND TESTED FROM BELOW ON 6/20/2011. -WSL WITNESS RIG SPOTTING. -DROP PLUM BOB FROM ROTARY TABLE TO CENTER OVER WELL. COVER RIG MATS W/ HERCULITE LINER. LAY DOWN LINER AROUND BASE OF WELLHEAD IN CELLAR. Printed 9/6/2011 1:18:30PM wth America -ALASKA- BP Page 4 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) _ Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:00 - 14:00 8.00 RIGU P PRE SPOT PIT MODULE NEXT AND RIG SUB AND RIG UP CONNECTIONS. -INSTALL DOUBLE VALVES ON IA AND OA. -ELECTRICIANS AND CANRIG REP TROUBLESHOOTING TDS PROGRAMMABLE LOGIC CONTROL(PLC). -LOAD 4"DRILLPIPE INTO PIPE SHED. -HELD PRESPUD MEETING WITH BOTH CEWS AT NOON CHANGE OUT. -WELDER INSTALLED GUARD ON PIPE SKATE TO ELIMINATE POTENTIAL TRIPPING HAZARD ON RIG FLOOR. -LAY MATS AND SET CUTTINGS BOX -LAY MATS IN FRONT OF PITS TO ACCOMMODATE VAC TRUCKS. -SPOT 500 BBL BLEED DOWN TANK 14:00 - 19:30 5.50 RIGU P PRE RECEIVE TWO TRUCK LOADS(580 BBL)OF 120 DEG F 1%KCL WATER 8.5 PPG. ***ACCEPT RIG AT 14:00 HRS 6-28-2011 *** -CONDUCT A RIG EVACUATION DRILL WITH ALL HANDS ON THE RIG AND CAMP -WELL SUPPORT CREW RIG UP AND TEST HARD LINE FROM 500 BBL TANK TO WELL. [ -RIG UP LINES TO WELL HEAD AND TREE TO PERFORM MIT -MIT TUBING AND IA TO 250 PSI FOR 5 MINUTES AND 2000 PSI FOR 30 MINUTES -PASSED MIT: FIRST 15 MIN-LOST 25 PSI. SECOND 15 MIN-LOST 20 • PSI. THIRD 15 MIN-LOST 5 PSI. -CONTACTED WTL AND DISCUSSED RESULTS OF MIT. 19:30 - 21:30 2.00 WHSUR P DECOMP PICK UP DSM LUBRICATOR AND PRESSURE TEST. -250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH. -PULL BPV AND LAY DOWN. 21:30 - 00:00 2.50 WHSUR P DECOMP CIRCULATE OUT DIESEL FREEZE PROTECT TO OPEN TOP TANK. -REVERSE OUT 34 BBLS OF DIESEL FROM THE TUBING. -4 BPM AND 340 PSI. -SWAP LINES AND CIRCULATE OUT 134 BBLS OF DIESEL FROM THE IA. -4 BPM AND 130 PSI. 6/29/2011 00:00 - 01:00 1.00 WHSUR P DECOMP CONTINUE TO CIRCULATE OUT DIESEL FREEZE PROTECT. -CIRCULATE UNTIL RETURNS ARE CLEAN. -SHUT DOWN AND MONITOR WELL. -NO FLOW. 01:00 - 03:00 2.00 WHSUR P DECOMP RIG UP DSM LUBRICATOR AND INSTALL TWC. -RIG UP DSM LUBRICATOR AND PRESSURE TEST 250/3500 FOR 5 CHARTED MIN. -INSTALL TWC. -PRESSURE TEST TWC: -250/3500 PSI FROM ABOVE FOR 5 CHARTED MIN EACH. -250/2000 PSI FROM BELOW FOR 5 CHARTED MIN EACH. -RIG DOWN DSM LUBRICATOR AND LAY DOWN. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 5 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site:PB DS 13 Rig Name/No.: NABORS 7ES Spud DatefTime:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 05:00 2.00 WHSUR P DECOMP NIPPLE DOWN TREE AND ADAPTER FLANGE AND REMOVE FROM CELLAR. -PJSM WITH RIG CREW AND FMC REPRESENTATIVE. FMC REPRESENTATIVE INSPECTED THE HANGER THREADS. -GOOD CONDITION;7 TURNS HANDY -WITH THE'X0'. -CLEAR CELLAR OF WELLHEAD EQUIPMENT. 05:00 - 08:00 3.00 BOPSUR P DECOMP NIPPLE UP BOPE. -PJSM WITH RIG CREW. -NIPPLE UP BOPE STACK AND RISER. 08:00 - 08:30 0.50 BOPSUR P DECOMP RIG UP TO TEST BOPE. 08:30 - 09:00 0.50 BOPSUR P DECOMP PERFORM H2S/RIG EVACUATION DRILL. MR FOLLOWING DRILL. 09:00 - 09:30 0.50 BOPSUR P DECOMP CONTINUE TO RIG UP BOPE TEST EQUIPMENT. -FILL THE STACK AND CHOKE MANIFOLD. Printed 9/6/2011 1:18:30PM wth America -ALASKA- BP Page 6 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:30 - 17:00 7.50 BOPSUR P DECOMP TEST BOPE PER AOGCC REGULATIONS AND BP ADWOP POLICY. PRESSURE TESTED TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MINUTES EACH. -TESTED ALL CHOKE MANIFOLD VALVES(16 ba TOTAL). eg -MANUAL CHOKE AND MANUAL KILL VALVES. -HCR CHOKE AND HCR KILL VALVES. -FULL OPENING SAFETY VALVES(3 'V2",4" AND 5"). -4"DART VALVE. -AIR ACTUATED IBOP ON TOP DRIVE. -MANUAL IBOP ON TOP DRIVE. -BLIND/SHEAR RAMS. -UPPER 3 1/2"x 6"VBRS WITH 4"AND 4 1/2" TEST JOINT. -LOWER 2 7/8"x 5"VBRS WITH 4"AND 4 1/2" TEST JOINT. -ANNULAR PREVENTER WITH 4"TEST JOINT. -SUPER CHOKE AND MANUAL BEAN CHOKE. -250 PSI LOW AND 1600 PSI HIGH FOR 5 CHARTED MINUTES. 1 FAIUPASS: -BLIND SHEAR RAMS LEAKED ON INITIAL LOW PRESSURE TEST. -FUNCTIONED RAMS AGAIN AND RETESTED GOOD. CLOSING TIMES: -ANNULAR CLOSED IN 25 SEC. -UPPER VBRS CLOSED IN 7 SEC. -BLIND/SHEAR RAMS CLOSED IN 14 SEC. -LOWER VBRS CLOSED IN 7 SEC. PERFORMED AN ACCUMULATOR DRAWDOWN TEST. -19 SEC TO 200 PSI. -96 SEC TO FULL PRESSURE. -5 BOTTLES WITH 2050 PSI. TESTED THE SIERRA GAS MONITORING SYSTEM. TESTS WITNESSED BY BP WSL AND NABORS TOOLPUSHER. -AOGCC,JEFF JONES,WAIVED THE STATE'S RIGHT TO WITNESS THE TEST. 17:00 - 18:00 1.00 BOPSUR P DECOMP RIG DOWN BOPE TEST EQUIPMENT. -BLOW DOWN TOP DRIVE,CHOKE MANIFOLD,AND CHOKE AND KILL LINES. 18:00 - 19:00 1.00 WHSUR P DECOMP RIG UP DUTCH RISER. 19:00 - 20:30 1.50 BOPSUR N RREP DECOMP 0-RINGS ON LOCK DOWN SCREWS FOR DUTCH RISER LEAKED. -RIG DOWN DUTCH RISER -DRAIN STACK TO BELOW LOCK DOWN SCREWS FOR DUTCH RISER. -PULL LOCK DOWN SCREWS AND REPLACE 0-RINGS. -RIG UP DUTCH RISER. Printed 9/6/2011 1:18:30PM )rth America -ALASKA- BP I c,z (�` 70,0„t 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:30 - 23:00 2.50 WHSUR N SFAL DECOMP RIG UP DSM LUBRICATOR. -PRESSURE TEST LUBRICATOR TO 250/3500 PSI FOR 5 CHARTED MIN. -ATTEMPTED TO PULL TWC. -UNABLE TO ENGAGE THE TWC DUE TO DEBRIS ON TOP OF THE TWC. -CHANGED OUT THE RUNNING TOOL. -PRESSURE TEST THE QUICK TEST SUB 250/3500 PSI FOR 5 MIN EACH. -ATTEMPTED TO PULL THE TWC. -STILL UNABLE TO ENGAGE THE TWC DUE TO DEBRIS. 23:00 - 00:00 1.00 WHSUR N WSEQ DECOMP WASH DEBRIS FROM THE TOP OF THE TWC. -MAKE UP A MULE SHOE ON 1 JOINT OF 4" DRILL PIPE. -MAKE UP TOP DRIVE AND PUMP AT 13.5 BPM AND 83 PSI. -RECOVERED SEVERAL GALLONS OF SAND. 6/30/2011 00.00 - 00:30 0.50 WHSUR N WSEQ DECOMP CONTINUED TO CLEAN OFF DEBRIS FROM THE TOP OF THE TWC. -RECOVERED SEVERAL GALLONS OF SAND. -LAY DOWN MULE SHOE AND JOINT OF 4" DRILL PIPE. 00:30 - 02:30 2.00 WHSUR N WSEQ DECOMP ATTEMPT TO PULL TWC. -PICK UP AND INSTALL DUTCH RISER. -MAKE UP DSM LUBRICATOR AND TEST 250/3500 PSI. -ATTEMPT TO PULL TWC. -UNABLE TO ENGAGE THE TWC. 02:30 - 04:00 1.50 WHSUR N WSEQ DECOMP RIG UP SUPERSUCKER AND ATTEMPT TO CLEAN DEBRIS OFF OF TWC. 04:00 - 07:00 3.00 WHSUR N WSEQ DECOMP PULL TWC. -MAKE UP DSM LUBRICATOR AND PRESSURE TEST QUICK TEST SUB 250/3500 PSI. -UNABLE TO GET RUNNING TOOL TO ENGAGE TWC. -RIG DOWN LUBRICATOR. -RIG UP SECONDARY KILL LINE TO IA. -APPLY 2000 PSI TO BOTTOM OF TWC THROUGH IA. -ATTEMPTING TO MOVE POPPET IN TWC AND DISLODGE DEBRIS. -BLEED OFF PRESSURE ON IA. -RUN A WATER HOSE DOWN STACK AND FLUSH TOP OF TWC. -USE SUPERSUCKER AND CLEAN OUT DEBRIS FROM TWC. -RIG UP DSM LUBRICATOR AND PRESSURE TEST QUICK TEST SUB TO 250/3500 PSI. -PULL TWC AND RIG DOWN DSM LUBRICATOR. 07:00 - 08:00 1.00 PULL P DECOMP RIG UP TUBING HANDLING EQUIPMENT. -RIG UP DOUBLE STACK TONGS AND ELEVATORS. Printed 9/6/2011 1:18:30PM )rth America-ALASKA- BP Page 8 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site:PB DS 13 Rig Name/No.:NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:00 - 09:00 1.00 PULL P DECOMP UNSEAT AND PULL TUBING HANGER TO THE RIG FLOOR. -MAKE UP LANDING JOINT TO TUBING HANGER AND TOP DRIVE. -FMC REPRESENTATIVE BACKED OUT THE LOCK DOWN SCREWS. -PULLED TUBING HANGER TO RIG FLOOR. -NO OVERPULL WAS REQUIRED TO UNSEAT THE HANGER. -UP WEIGHT=63K LBS. 09:00 - 10:00 1.00 PULL P DECOMP PUMPED A 50 BBL SAFE-SURF-0 II PILL SURFACE TO SURFACE. -8 BPM AND 135 PSI. -MONITORED WELL FOR 10 MIN. -NO FLOW. 10:00 - 10:30 0.50 PULL P DECOMP RIG UP COMPENSATOR AND 4 1/2"YC ELEVATORS TO PULL THE 4 1/2"VAMTOP COMPLETION. 10:30 - 15:00 4.50 PULL P DECOMP PULLED THE 4 1/2" 12 6 LB/FT.VAMTOP COMPLETION. -FROM 3622'SLM TO CUT JOINT. -RECOVERED:85 JTS OF 4 1/2"TUBING, 2 PUP JOINTS WITH AND'X' -- NIPPLE, CUT JOINT(38.45'). 15:00 - 17:00 2.00 PULL P DECOMP RIG DOWN TUBING HANDLING EQUIPMENT. -RIG DOWN DOUBLE STACK TONGS AND COMPENSATOR. -CHANGE THE BAILS AND ELEVATORS. 17:00 - 17:30 0.50 WHSUR P DECOMP INSTALL 9"ID WEAR RING. 17:30 - 19:00 1.50 CLEAN P DECOMP PICK UP SOME OF THE CLEAN OUT BHA PRIOR TO PICKING UP DRILL PIPE. -RUN IN THE HOLE WITH A MULE SHOE AND (9)6 1/4"DRILL COLLARS. -TO 277'DPM. -UP WEIGHT=45K LBS,DOWN WEIGHT= 45K LBS. 19:00 - 23:00 4.00 CLEAN P DECOMP RUN IN THE HOLE WITH THE MULE SHOE AND DRILL COLLARS, PICKING UP 4"DRILL PIPE FROM THE PIPE SHED. -FROM 277'TO 3569'DPM. -UP WEIGHT=60K LBS,DOWN WEIGHT= 60K LBS. 23:00 - 00:00 1.00 CLEAN P DECOMP TRIP OUT OF THE HOLE STANDING BACK 4" DRILL PIPE STANDS IN THE DERRICK. -FROM 3569'TO 277'DPM. 7/1/2011 00:00 - 01:00 1.00 CLEAN P DECOMP RUN IN THE HOLE PICKING UP 4"DRILL PIPE FROM THE PIPE SHED. -FROM 277'TO 1500'DPM. 01:00 - 02:00 1.00 CLEAN P DECOMP TRIP OUT OF THE HOLE STANDING BACK 4" DRILL PIPE STANDS IN THE DERRICK. -FROM 1500'. -STAND BACK 6 1/4"DRILL COLLARS IN THE DERRICK. -MONITOR WELL FOR 10 MIN. -NO FLOW. Printed 9/6/2011 1:18:30PM rth America ALASKA- BP Page 9 of 77 Operation Summary Report . Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:00 - 03:00 1.00 CLEAN P WEXIT PICK UP CLEAN OUT BHA. -PJSM WITH RIG CREW AND BAKER FISHING REPRESENTATIVE. -DISCUSS NON-SHEARABLES ACROSS THE BOP STACK. -CLEAN OUT BHA AS FOLLOWS: -8 1/2"USED MILL TOOTH BIT. -BIT SUB WITH FLOAT. -8 1/2"UPPER WATERMELON MILL. -(9)6 1/4"DRILL COLLARS. -(15)5"HEAVY WEIGHT DRILL PIPE. -'XO'BACK TO 4"HT-40. OVERALL LENGTH=747.06' MAX OD=8.5" 03:00 - 06:00 3.00 CLEAN P WEXIT RUN IN THE HOLE WITH THE CLEAN OUT BHA. -FROM 747'TO 3473'DPM. -PICKING UP 4"DRILL PIPE FROM THE PIPE SHED. 06:00 - 06:30 0.50 CLEAN P WEXIT CONTINUE TO RUN IN THE HOLE WITH THE CLEAN OUT BHA. -FROM 3473'TO 3632'DPM. -RUN IN THE HOLE ON STANDS OF 4"DRILL PIPE FROM THE DERRICK. -TAG TOP OF TUBING STUB AT 3632'WITH 5K LBS. 06:30 - 07:30 1.00 CLEAN P WEXIT CIRCULATE A 25 BBL HIGH-VS SWEEP TO CLEAN UP THE WELLBORE. -12 BPM AND 1152 PSI. SLOW PUMP RATES TAKEN AT 3632'MD, 3593'TVD. -PUMPS 1 AND 2: -2 BPM AND 40 PSI;3 BPM AND 60 PSL 07:30 - 10:00 2.50 CLEAN P WEXIT TRIP OUT OF THE HOLE WITH THE CLEAN OUT BHA,STANDING BACK 4"DRILL PIPE IN THE DERRICK. -FROM 3632'TO 747'DPM. -ROTATED PAST THE ES CEMENTER AT 1867'. -MONITORED THE WELL. -NO FLOW. 10:00 - 11:30 1.50 CLEAN P WEXIT LAY DOWN THE CLEAN OUT BHA. -STOOD BACK THE 5 STANDS OF HEAVY WEIGHT DRILL PIPE. -STOOD BACK THE 3 STANDS OF 6 1/4" DRILL COLLARS. -LAID DOWN THE REST OF THE CLEAN OUT BHA. 11:30 - 13:00 1.50 STWHIP P WEXIT RIG UP SCHLUMBERGER E-LINE. -PJSM WITH RIG CREW AND SCHLUMBERGER E-LINE CREW. -RIG UP E-LINE WITH AN AIR LINE WIPER. _ 13:00 - 14:00 1.00 STWHIP P WEXIT RUN AND SET 9 5/8"HES'EZSV'BRIDGE`. PLUG ON E-LINE. COLLAR _-_SET'EZSV'AT3423'. ✓ 14:00 - 15:00 1.00 STWHIP P WEXIT PULL OUT OF THE HOLE WITH SCHLUMBERGER E-LINE AND RIG DOWN. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 10 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site:PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 16:30 1.50 STWHIP P WEXIT PRESSURE TEST'EZSV'BRIDGE PLUG AND 9 5/8"CASING. -250 PSI LOW FOR 5 CHARTED MIN. -PRESSURED UP TO TEST AT HIGH PRESSURE AND SENSATOR FAILED. -REPLACED SENSATOR AND PRESSURED UP. SECOND SENSATOR FAILED. -CHANGED SENSATOR AND LINE. -PRESSURED UP TO 3500 PSI FOR 30 CHARTED MIN. -USED DIGITAL GUAGE FOR PRESSURE LOSSES: -LOST 5 PSI IN FIRST 15 MIN. -LOST 2 PSI IN SECOND 15 MIN. -GOOD TEST. -DISCUSSED PRESSURE TEST RESULTS WITH WTL. 16:30 - 00:00 7.50 STWHIP N RREP WEXIT ADJUST TOP DRIVE ALIGNMENT. -WHEN SAVER SUB IS AT THE FLOOR IT IS ALMOST 4"OFF CENTER TO THE DRAW WORKS SIDE. -SHIM LOWER TORQUE TUBE. -NEEDS ALMOST 2"OF SHIMS. -MOVE SERVICE LOOP TO LOWER BRACKET TO AVOID CONTACT WITH PAD EYES IN DERRICK. 7/2/2011 00:00 - 05:00 5.00 STWHIP N RREP WEXIT CONTINUE TO ADJUST TOP DRIVE. -CONTINUE TO SHIM AND ADJUST TOP DRIVE. -TAKE PHOTOS OF SHIMS AND ADJUSTMENTS AND SEND TO CANRIG. 05:00 - 06:00 1.00 STWHIP P WEXIT BRING BHA COMPONENTS FOR WHIPSTOCK TO RIG FLOOR. -PREP THE PIPE SHED FOR PICKING UP BHA. 06:00 - 07:00 1.00 STWHIP P WEXIT PICK UP BHA#2,WHIPSTOCK ASSY. -PJSM WITH RIG CREW AND BAKER REPRESENTATIVE. -DISCUSS NON-SHEARABLES ACROSS THE BOP STACK. -THE TRIP ANCHOR ON THE WHIPSTOCK WAS SHEARED. -THE SHEAR PINS AND SHIPPING BOLT WERE SHEARED. 07:00 - 08:00 1.00 STWHIP N WAIT WEXIT MOBILIS A NEW TRIP ANCHOR FOR THE WHIPSTOCK ASSY. -BROKE THE TRIP ANCHOR OFF OF THE WHIPSTOCK ASSY. -BAKER BROUGHT OUT A NEW TRIP ANCHOR. -INSTALLED AND TORQUED UP THE NEW TRIP ANCHOR PER THE BAKER REPRESENTATIVE. Printed 9/6/2011 1:18.30PM Irth America -ALASKA-- BP P`ag" '11 of 7 Operation Summary Report Common Well Name. 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:00 - 10:00 2.00 STWHIP P WEXIT CONTINUE TO PICK UP BHA#2,WHIPSTOCK ASSY. -PICK UP AND MAKE UP BHA#2 AS FOLLOWS: -TRIP ANCHOR. -GEN 2 WHIPSTOCK SLIDE. -8 1/2"STARTER MILL. -8 3/8"LOWER WATERMELON MILL. -8 1/2"UPPER WATERMELON MILL. -8 1/2"UPPER WATERMELON MILL. -(1)5"HEAVY WEIGHT DRILL PIPE. -MWD. -(9)6 1/4"SPIRAL DRILL COLLARS. -(15)5"HEAVY WEIGHT DRILL PIPE. -'XO'. OVERALL LENGHT=842.9" MAX OD=8.50". 10:00 - 11:30 1.50 STWHIP P WEXIT RUN IN THE HQLE_W1TH THE WHIPSTOCK BHA. -TO 3381'DPM. -FILLING THE PIPE EVERY 20 STANDS. -UP WEIGHT=106K LBS,DOWN WEIGHT= 100K LBS. SHALLOW TEST THE MWD. -PUMP AT 450 GPM AND 570 PSI. 11:30 - 12:00 0.50 STWHIP P WEXIT CONTINUE TO RUN IN THE HOLE WITH THE WHIPSTOCK BHA. -FROM 3381'TO 3425'DPM. -ORIENT THE WHIPSTOCK TO 60 DEG RIGHT. -SET DOWN 22K LBS AND SHEAR THE TRIP ANCHOR. -SET DOWN 50K LBS AND SHEAR THE MILLS FROM THE SLIDE. -TOP OF WINDOW=3404'; BOTTOM OF effk WINDOW=3421'. 12:00 - 13:00 1.00 STWHIP P WEXIT DISPLACE WELL TO 10.0 PPG LSND. -450 GPM AND 840 PSI. -SLOW PUMP RATES PUMPS 1 AND 2. -TMD=3404',TVD=3385'. -2 BPM AND 110 PSI;3 BPM AND 150 PSI. 13:00 - 18:30 5.50 STWHIP P WEXIT MILL WINDOW IN 9 5/8"CASING. -FROM 3404'TO 3421'DPM. -MILL 40'OF NEW HOLE TO 3452'DPM. -UP WEIGHT=105K LBS;DOWN WEIGHT= S. -ROTATING WEIGHT=102K LBS. -100 RPM AND 2K FT-LBS OF TORQUE OFF Pip BOTTOM. V -8K LBS WEIGHT ON BIT AND 6K FT-LBS TORQUE ON BOTTOM. -450 GPM AND 840 PSI. 18:30 - 19:30 1.00 STWHIP P WEXIT CIRCULATE A 0.25 PPB SUPER SWEEP TO CLEAN THE HOLE. -WORKED THE MILLS ACROSS THE WINDOW WITH AND WITHOUT CIRCULATION. -CIRCULATED THE SUPER SWEEP WITH ROTATION AND RECIPROCATION. -450 GPM AND 895 PSI. -UP WEIGHT= 105K LBS;DOWN WEIGHT =98K LBS. -100 RPM AND 2K FT-LBS TORQUE. -RECOVERED 305 LBS OF METAL. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 12 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) I Start Date:6/24/2011 End Date X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:30 - 21:30 2.00 STWHIP P WEXIT PERFORMED A LEAK OFF TEST. -TMD=3404';TVD=3385'. LD-r -10.0 PPG LSND. -PRESSURED UP AT 1/4 BPM. -LEAK OFF POINT=342 PSI;EMW=11.9 PPG. -SENT DATA TO ODE AND DISCUSSED RESULTS. 21:30 - 23:00 1.50 STWHIP P WEXIT PULL OUT OF THE HOLE WITH BHA 2. -FROM 3404'TO 821'DPM. -MONITOR WELL. -NO FLOW. 23:00 - 00:00 1.00 STWHIP P WEXIT LAY DOWN BHA#2. -FROM 821'TO 790'DPM. -CHANGE OUT ELEVATORS AND STAND BACK 5"HEAVY WEIGHT DRILL PIPE. 7/3/2011 00:00 - 01:30 1.50 STWHIP P WEXIT CONTINUE TO LAY DOWN BHA#2, MILLING ASSY. -CLEAN AND CLEAR RIG FLOOR. -UPPER MILLS SHOWED SIGNS OF WEAR BUT WERE ALL IN GAUGE. 01:30 - 03:00 1.50 STWHIP P WEXIT CLEAN OUT BOP STACK. -PULL THE WEAR BUSHING. FLUSHED THE BOP STACK,AND KILL AND CHOKE LINES. -INSTALLED THE WEAR RING. 03:00 - 03:30 0.50 STWHIP P WEXIT BRING BHA 3,8.5"DRILLING ASSY, COMPONENTS TO RIG FLOOR AND PREP PIPE SHED FOR PICKING UP BHA. 03:30 - 08:00 4.50 STWHIP P WEXIT PICK UP BHA#3,8.5"DRILLING ASSY. -PJSM WITH RIG CREW, MWD AND DD. -DISCUSSED NON-SHEARABLES ACROSS THE BOP. -DISCUSSED SOURCE HANDLING SAFETY. -PICKED UP BIT,MOTOR, MWD,AND ECOSCOPE. -RAN IN WITH 2 STANDS OF 5"HEAVY WEIGHT DRILL PIPE. -PERFORMED A SHALLOW TEST TO VERIFY THAT THE MWD AND ECOSCOPE WERE COMMUNICATING. -350 GPM AND 475 PSI. -STAND BACK THE 2 STANDS OF 5"HEAVY WEIGHT DRILL PIPE. -LOAD SOURCE IN ECOSCOPE. -CONTINUE PICKING UP BHA#3. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 13 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:00 - 11:00 3.00 STWHIP P WEXIT RUN IN THE HOLE WITH BHA#3, PICKING UP 4"DRILL PIPE FROM THE PIPE SHED. -FROM 667'TO 1138'DPM. -PERFORMED A SHALLOW HOLE TEST OF MWD TOOLS. -365 GPM AND 635 PSI. CONTINUED TO RUN IN THE HOLE PICKING UP DRILL PIPE. -FROM 1138'TO 3206'DPM. RUN IN THE HOLE WITH 4"DRILL PIPE FROM THE DERRICK. -FROM 3206'TO 3394'DPM. -UP WEIGHT=98K LBS;DOWN WEIGHT= 92K LBS. 11:00 - 13:00 2.00 STWHIP P WEXIT CUT AND SLIP DRILL LINE. -PJSM WITH RIG CREW. -CUT 140'OF DRILL LINE. -ADJUSTED BRAKES AND INSPECTED DRAW WORKS. -SERVICE TOP DRIVE,BLOCKS AND CROWN. -ADJUSTED TORQUE TUBE RAIL. 13:00 - 14:00 1.00 STWHIP P WEXIT ESTABLISH PWD CLEAN HOLE PARAMETERS AND SLOWLY SLIDE THROUGH WINDOW. -SLOW PUMP RATES PUMPS 1 AND 2. -TMD=3395',TVD=3377'. -2 BPM AND 240 PSI;3 BPM AND 290 PSI. -ESTABLISH PWD PARAMETERS: -CALCULATED ECD=10.84;ACTUAL ECD = 10.90. -SLIDE THROUGH WINDOW WITHOUT CIRCULATION OR ROTATION. -FROM 3404'TO 3421'DPM AND DOWN TO 3427'. -NO EXCESS DRAG NOTED. -WASH DOWN TO 3452'. 14:00 - 00:00 10.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 3452'TO 4148'DPM(4072'TVD). -UP WEIGHT=110K LBS,DOWN WEIGHT= 100K LBS. -40 RPM;ROTATING WEIGHT=102K LBS. -TORQUE ON BTM=4K FT-LBS;TORQUE OFF BTM=3K FT-LBS. -508 GPM;1680 PSI ON BTM;1440 PSI OFF BTM. -WEIGHT ON BIT= 12K LBS. -CALCULATED ECD=10.78;ACTUAL ECD= 11.19. -MUD WEIGHT=10 PPG IN AND OUT SLOW PUMP RATES PUMPS 1 AND 2. -TMD=4148',TVD=4072'. -2 BPM AND 280 PSI;3 BPM AND 330 PSI. ART=1.33 HRS;AST=4.16 HRS;ADT=5.49 HRS. Printed 9/6/2011 1:18:30PM -)rth America -ALASKA- BP Page 14 of 77 sa. s Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site:PB DS 13 Rig Name/No.:NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/4/2011 00:00 - 06:00 6.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 4148'TO 4850'DPM. -UP WEIGHT=177K LBS,DOWN WEIGHT= 98K LBS. -100 RPM;ROTATING WEIGHT=105K LBS. -TORQUE ON BTM=5.5K FT-LBS;TORQUE OFF BTM=4K FT-LBS. -508 GPM;1685 PSI ON BTM;1550 PSI OFF BTM. -WEIGHT ON BIT=10K-15K LBS. -MUD WEIGHT=10 PPG IN AND OUT 06:00 - 12:00 6.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 4850'TO 5561'DPM. -UP WEIGHT= 130K LBS,DOWN WEIGHT= 105K LBS. -100 RPM;ROTATING WEIGHT= 110K LBS. -TORQUE ON BTM=6.5K FT-LBS;TORQUE OFF BTM=4.5K FT-LBS. -550 GPM;2290 PSI ON BTM;2115 PSI OFF BTM. -WEIGHT ON BIT=10K-15K LBS. -MUD WEIGHT=10 PPG IN AND OUT. -CALCULATED ECD= 10.94;ACTUAL ECD= 11.3. SLOW PUMP RATES: -TMD=5093',TVD=4790'. -PUMP 1 --2 BPM AND 280 PSI;3 BPM AND 360 PSI. -PUMP 2--2 BPM AND 300 PSI;3 BPM AND 380 PSI. ART=5.31 HRS;AST=2.50 HRS;ADT=7.81 HRS. 12:00 - 23:00 11.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 5561'TO 6595'DPM. -UP WEIGHT=160K LBS,DOWN WEIGHT= 105K LBS. -100 RPM;ROTATING WEIGHT= 124K LBS. -TORQUE ON BTM=7.5K FT-LBS;TORQUE OFF BTM=6K FT-LBS. -540 GPM;2650 PSI ON BTM;2398 PSI OFF BTM. -WEIGHT ON BIT= 12K LBS. -MUD WEIGHT=10 PPG IN AND OUT. -CALCULATED ECD=10.95;ACTUAL ECD= 10.98. SLOW PUMP RATES: -TMD=6031',TVD=5496'. -PUMP 1 --2 BPM AND 320 PSI;3 BPM AND 400 PSI. -PUMP 2--2 BPM AND 320 PSI;3 BPM AND 390 PSI. Printed 9/6/2011 1:18:30PM rth America-ALASKA- BP Page 15 of 77 Operation Summary Report Common Well Name. 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) I Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site:PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 23:30 0.50 DRILL N RREP 6,590.00 INTI CIRCULATE AND WORK PIPE WHILE CHANGING OUT A SWAB ON MUD PUMP. -RECIPROCATING FROM 6502'TO 6590'DPM. -ROTATING AT 100 RPM WITH 6K FT-LBS FREE TORQUE. -PUMPING 286 GPM AND 1025 PSI. DUMPED AND DILUTED WITH 290 BBLS OF NEW 10.0 PPG LSND -MBTS HAD CLIMBED TO 12 LB/BBL. 23:30 - 00:00 0.50 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -SLIDING FROM 6595'TO 6613'DPM. -UP WEIGHT=160K LBS,DOWN WEIGHT= 105K LBS. -540 GPM;2650 PSI ON BTM;2398 PSI OFF BTM. -WEIGHT ON BIT=12K LBS. -MUD WEIGHT= 10 PPG IN AND OUT. ART=5.39 HRS;AST= 1.42 HRS;ADT=6.81 HRS. BIT HOURS=20.11;JAR HOURS=20.1. 7/5/2011 00:00 - 02:00 2.00 DRILL N RREP 6,613.00 INTI CIRCULATE AND WORK PIPE WHILE CHANGING OUT SWABS ON MUD PUMP. -RECIPROCATING AND ROTATING AT 80 RPM „( WITH 4K FT-LBS FREE TORQUE. -PUMPING 274 GPM AND 800 PSI. -HAD TO CHANGE THE OTHER TWO SWABS ON THE SAME MUD PUMP. 02:00 - 06:00 4.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 6613'TO 7066'DPM. -UP WEIGHT= 165K LBS,DOWN WEIGHT= 112K LBS. -80 RPM;ROTATING WEIGHT=125K LBS. -TORQUE ON BTM=8.2K FT-LBS;TORQUE OFF BTM=6.3K FT-LBS. -540 GPM;2733 PSI ON BTM;2485 PSI OFF BTM. -WEIGHT ON BIT=12K LBS. -MUD WEIGHT=10 PPG IN AND OUT. -CALCULATED ECD= 10.94;ACTUAL ECD= 10.88. SLOW PUMP RATES: -TMD=7159',TVD=6334'. -PUMP 1 --2 BPM AND 350 PSI;3 BPM AND 440 PSI. -PUMP 2--2 BPM AND 360 PSI;3 BPM AND 440 PSI. ART=2.76 HRS;AST=0.89 HRS;ADT=3.65 HRS. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 16 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:00 - 12:00 6.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 7066'TO 7723'DPM. -UP WEIGHT=170K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT= 130K LBS. -TORQUE ON BTM=7.5K FT-LBS;TORQUE OFF BTM=6.4K FT-LBS. -540 GPM;2812 PSI ON BTM;2505 PSI OFF BTM. -WEIGHT ON BIT=15K LBS. -MUD WEIGHT= 10 PPG IN AND OUT. -CALCULATED ECD=10.94;ACTUAL ECD= 10.87. ART=3.18 HRS;AST=0.81 HRS;ADT=3.99 HRS. 12:00 - 16:00 4.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 7773'TO 8100'DPM. -UP WEIGHT= 170K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT= 137K LBS. / -TORQUE ON BTM=9K FT-LBS;TORQUE OFF ✓ BTM=6.5K FT-LBS. -539 GPM;3080 PSI ON BTM;2796 PSI OFF BTM. -WEIGHT ON BIT=15K LBS. -MUD WEIGHT= 10 PPG IN AND OUT. -CALCULATED ECD= 10.94;ACTUAL ECD= 11.24. SLOW PUMP RATES: -TMD=8005',TVD=6794'. -PUMP 1 --2 BPM AND 360 PSI;3 BPM AND 460 PSI. -PUMP 2--2 BPM AND 360 PSI;3 BPM AND 460 PSI. 16:00 - 16:30 0.50 DRILL P INTI TRANSFER RIG POWER FROM RIG ENGINES TO HIGH LINE POWER. CIRCULATE WITH ROTATION AND RECIPROCATION WHILE SWAPPING POWER. -RECIPROCATING FROM 8006'TO 8100'DPM. -ROTATING AT 60 RPM WITH 6K FT-LBS TORQUE. -CIRCULATING AT 452 GPM AND 2188 PSI. -CALCULATED ECD=10.94;ACTUAL ECD= 11.15 Printed 9/6/2011 1:18:30PM i t t n J :. ®®,9 pig iu Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES I Spud Date/Time:5/26/1983 12:00:00AM I Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27©83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:30 - 18:00 1.50 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 8100'TO 8194'DPM. -UP WEIGHT=170K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT= 137K LBS. -TORQUE ON BTM=9K FT-LBS;TORQUE OFF BTM=6.5K FT-LBS. -543 GPM;3240 PSI ON BTM;2950 PSI OFF BTM. -WEIGHT ON BIT= 15K LBS. -MUD WEIGHT=10 PPG IN AND OUT. -CALCULATED ECD= 10.94;ACTUAL ECD= 11.15. FROM 12:00 HRS TO 18:00 HRS: ART=2.73 HRS;AST=0.63 HRS;ADT=3.36 HRS. 18:00 - 22:00 4.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3. -FROM 8194'TO 8432'DPM. -UP WEIGHT=175K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT=143K LBS. -TORQUE ON BTM=9K FT-LBS;TORQUE OFF BTM=6.8K FT-LBS. -548 GPM;3140 PSI ON BTM;2727 PSI OFF BTM. -WEIGHT ON BIT= 15K LBS. -MUD WEIGHT=10 PPG IN AND OUT. -CALCULATED ECD=10.99;ACTUAL ECD= 10.87. DUMPED AND DILUTED WITH 290 BBLS OF NEW 10.0 PPG LSND WELL BEGAN TAKING FLUID AT 60 BPH WHILE DRILLING. ART=0.97 HRS;AST= 1.64 HRS;ADT=2.61 HRS. Printed 9/6/2011 1:18.30PM Pae 18 of 77 ilijAmerica-ALASKA- BP g Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(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 DRILL N DPRB 8,432.00 INTI MONITORED THE WELL AND DETERMINED LOSS RATES. -LOST 116 BBLS WHILE PUMPING. -60 BPH LOSSES WHILE DRILLING. -50 BPH LOSSES WHILE CIRCULATING AT 75%OF DRILLING RATE. -FLOWED BACK 26 BBLS WHILE CONDUCTING EXHALE TEST. -FLOW RATE DECREASED WITH TIME. -6 BBLS BACK AT 3 MIN. -5 BBLS BACK AT 5 MIN. -4.5 BBLS BACK AT 8 MIN. 4 BBLS BACK 13 MIN. -3 BBLS BACK AT 18 MIN. -1 BBLS BACK AT 23 MIN. -1.3 BBLS BACK AT 28 MIN. -1 BBL BACK AT 33 MIN. -1 BBL BACK AT 38 MIN. -NO FLOW AFTER 45 MIN. -RECIPROCATED THE PIPE PERIODICALLY DURING FLOW CHECK. -FROM 8393'TO 8410'DPM. -LOST 90 BBLS TO WELL. -CALLED ODE AND WTL TO DISCUSS PLAN FORWARD. 7/6/2011 00:00 - 01:00 1.00 DRILL N DPRB 8,432.00 INTI BUILDING A 50 BBL LCM PILL. -MONITORING THE WELL AND PERIODICALLY RECIPROCATING THE PIPE. -LCM PILL:M-I-X II MEDIUM(15PPB)-30 SX. G-SEAL(10PPB)-10SX. SAFE CARB 40(10PPB)-10 SX. r/ NUT PLUG FINE(5PPB)-5 SX. -CONDITIONING THE LSND IN THE PITS. -BRINGING THE NEW MUD UP TO 10 PPG FROM 9.9 PPG. 01:00 - 02:00 1.00 DRILL N DPRB 8,432.00 INTI SPOT 50 BBL LCM PILL ON BOTTOM. -200 GPM AND 700 PSI. -RECIPROCATING PIPE FROM 8385'TO 8412' DPM. 02:00 - 04:00 2.00 DRILL N DPRB 8,432.00 INTI BACKREAMING OUT 10 STANDS. -ATTEMPTED TO PULL ABOVE LCM PILL. -SWABBING WHEN PULLING AND SURGES WHEN ATTEMPTING TO GO DOWN. -BACKREAMED OUT OF THE HOLE 10 STANDS. -80 RPM AND 6.7K FT-LBS TORQUE. -400 GPM AND 1633 PSI. -LOST 167 BBLS TO THE WELL. Printed 9/6/2011 1:18:30PM Page 19 of 77 Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 - 06:00 2.00 DRILL N DPRB 8,432.00 INTI MONITOR WELL. -WELL FLOWED BACK 55 BBLS DURING EXHALE TEST. -FLOW RATE DECREASED WITH TIME. -1 MIN=9.5 BBL 3 MIN=3.9 BBL 5 MIN=3.5 BBL -10 MIN=3.1 BBL -20 MIN=2.4 BBL -30 MIN=2.4 BBL -40 MIN=3.2 BBL 50 MIN=2 BBL -60MIN=0.6 BBL 70 MIN=0.6 BBL 75 MIN=0.6 BBL 80 MIN=0.5 BBL -90 MIN=0.3 BBL 100 MIN=0.1 BBL -RECIPROCATED THE PIPE PERIODICALLY DURING FLOW CHECK. -REPAIRING A HYDRAULIC HOSE FOR THE MUD ELEVATOR IN PIT 4. 06:00 - 11:00 5.00 DRILL N DPRB 8,432.00 INTI CONDITIONED LSND MUD. CUT MUD WEIGHT BACK TO 9.8 PPG FROM 10.0 PPG. -DUMPED AND DILUTED WITH 290 BBLS OF NEW 10.0 PPG LSND. -CONTINUED TO RECIPROCATE PIPE WHILE CONDITIONING MUD. 11:00 - 12:00 1.00 DRILL N DPRB 8,432.00 INTI BACK REAM OUT OF THE HOLE 3 STANDS. -TO 7249' DPM. -400 GPM AND 1480 PSI. -80 RPM AND 7K FT-LBS TORQUE. -ROTATING WEIGHT=125K LBS. -CONTINUING TO RUN WATER AND CUT THE MUD WEIGHT BACK TO 9.8 PPG. LOSSES FROM 00:00 TO 12:00= 101 BBLS. 12:00 - 14:30 2.50 DRILL N DPRB 8,432.00 INTI CIRCULATE AND CONDITION THE MUD. BRING THE WHOLE SYSTEM TO 9.8 PPG. -ROTATING AND RECIPROCATING WHILE CIRCULATING. -FROM 7254'TO 7160'DPM. -100 RPM AND 6K FT-LBS OF TORQUE. -546 GPM AND 2450 PSI. GAINED BACK 35 BBLS WHILE CIRCULATING. 14:30 - 20:00 5.50 DRILL N DPRB 8,432.00 INTI BACK REAMING OUT OF THE HOLE. -FROM 7254'TO 5656'DPM. -BACK REAMING AT 60 FT/MIN. -FROM 6690'TO 6314'DPM. -SLOWED TO 10 FT/MIN DUE TO INCREASED TORQUE AND PRESSURE. -UP WEIGHT= 145K LBS;DOWN WEIGHT= 95K LBS. -100 RPM AND 5K FT-LBS OF TORQUE. -506 GPM AND 2030 PSI. -MUD WEIGHT INCREASED FROM 9.8 PPG TO 10.0 PPG IN AND 10.1 PPG OUT. LOST 50 BBLS WHILE BACK REAMING. Printed 9/6/2011 1:18:30PM . . 3� 9� - ate. Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:00 - 22:00 2.00 DRILL N DPRB 8,432.00 INTI CONDITIONED LSND MUD. -CUT MUD WEIGHT FROM 10.1 PPG TO 9.8 PPG. -RECIPROCATING FROM 5750'TO 5656' DPM. -ROTATING AT 100 RPM AND 5K FT-LBS TORQUE. -506 GPM AND 2030 PSI. UP WEIGHT= 145K LBS;DOWN WEIGHT= 95K LBS. -ECDS WHILE CIRCULATING: -BEGIN 10.88 PPG. -END 10.42 PPG. LOST 41 BBL WHILE CIRCULATING. LOSSES WHILE CIRCULATING STOPPED AT THE END OF THE CIRCULATION. 22:00 - 00:00 2.00 DRILL N DPRB 8,432.00 INTI BACK REAMING OUT OF THE HOLE. -FROM 5750'TO 5374'DPM. -BACK REAMING AT 60 FT/MIN. -UP WEIGHT= 135K LBS;DOWN WEIGHT= 95K LBS. -ROTATING WEIGHT= 120K LBS. -100 RPM AND 4K FT-LBS OF TORQUE. 474 GPM AND 1711 PSI. ECDS= 10.5 PPG. 1 BBL LOSS WHILE BACK REAMING FROM 5750'TO 5374'. LOSSES FROM 12:00 TO 00:00=57 BBLS. 7/7/2011 00:00 - 04:00 4.00 DRILL N DPRB 8,432.00 INTI CONTINUE TO BACK REAM OUT OF THE HOLE. -FROM 5374'TO THE BOTTOM OF THE WINDOWAT 3412'DPM. -BACK REAMING AT 60 FT/MIN. -UP WEIGHT=125K LBS;DOWN WEIGHT= 95K LBS. -100 RPM AND 4K FT-LBS OF TORQUE. -504 GPM AND 1790 PSI. STOPPED SEEING LOSSES WHILE BACK REAMING AT 5000'. ECDS AT 5000'=10.71 PPG. LARGE AMOUNTS OF CLAY AND CUTTINGS ACROSS THE SHAKERS AT 4600' -REDUCED FLOW RATE TO 400 GPM AND 1177 PSI. -WORKED THE STAND UNTIL RETURNS CLEANED UP. CONTINUED TO BACK REAM TO THE WINDOWAT 400 GPM TO KEEP FROM LOSING MUD ACROSS THE SHAKERS. PICKED UP INSIDE THE WINDOW ONE STAND. LAID DOWN THE GHOST REAMER. -GHOST REAMER WAS CLEAN-NOT BALLED UP WITH CLAY OR CUTTINGS. Printed 9/6/2011 1:18:30PM or �America'-A SKA B "' E P ge 1 7. Report ,' ,,,„ Operation Summary Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.:NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 - 05:30 1.50 DRILL N DPRB 8,432.00 INTI CIRCULATED THE WELLBORE CLEAN. -LARGE AMOUNT OF CLAY BALLS AND CUTTINGS AT THE SHAKERS ON BOTTOMS UP. -CIRCULATED UNTIL WELL CLEANED UP. -400 GPM AND 1075 PSI. -CHECKED FOR FLOW. -NO FLOW. 05:30 - 09:00 3.50 DRILL N DPRB 8,432.00 INTI RUN IN THE HOLE WITH BHA#3 MINUS THE GHOST REAMER. -FROM 3343 TO 8432'DPM. -BREAKING CIRCULATION EVERY 10 STANDS. -UP WEIGHT= 175K LBS;DOWN WEIGHT= 115K LBS. -LOST 10 BBLS ON TRIP IN HOLE. -CONDITIONED MUD OUT FROM 10.1 TO 9.8. SLOW PUMP RATES AT 08:31: -TMD=8433',TVD=7262'. -PUMP 1 --2 BPM AND 380 PSI;3 BPM AND 480 PSI. -PUMP 2--2 BPM AND 380 PSI;3 BPM AND 480 PSI. 09:00 - 12:00 3.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 8432'TO 8520'DPM. -UP WEIGHT=180K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT=138K LBS. -TORQUE ON BTM=9K FT-LBS;TORQUE OFF BTM=8.2K FT-LBS. -550 GPM;3219 PSI ON BTM;2724 PSI OFF BTM. -WEIGHT ON BIT=8K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. -CALCULATED ECD=10.75;ACTUAL ECD= 10.43. FROM 06:00 HRS TO 12:00 HRS: ART=0.35 HRS;AST=0.65 HRS;ADT= 1.00 HRS. SLOW PUMP RATES AT 10:00: -TMD=8433',TVD=7262'. -PUMP 1 --2 BPM AND 300 PSI;3 BPM AND 380 PSI. -PUMP 2--2 BPM AND 300 PSI;3 BPM AND 380 PSI. Printed 9/6/2011 1:18:30PM th America-ALASKA- BP Page 22 of 77 t h X11' Al • 11 !!‘„,,!`j I''1•11,1:%, Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-0OXTY-C(4,681,752.11 ) Project: Prudhoe Bay Site:PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 18:00 6.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 8520'TO 8770'DPM. -UP WEIGHT=190K LBS,DOWN WEIGHT= 120K LBS. -40 RPM;ROTATING WEIGHT= 145K LBS. -TORQUE ON BTM=8.5K FT-LBS;TORQUE OFF BTM=7.3K FT-LBS. -550 GPM;2985 PSI ON BTM;2870 PSI OFF BTM. -WEIGHT ON BIT=8K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. -CALCULATED ECD= 10.75;ACTUAL ECD= 10.45. FROM 12:00 HRS TO 18:00 HRS: ART=2.58 HRS;AST=0.79 HRS;ADT=3.37 HRS. SLOW PUMP RATES AT 15:00: -TMD=8658',TVD=7477'. -PUMP 1 --2 BPM AND 280 PSI;3 BPM AND 360 PSI. -PUMP 2--2 BPM AND 280 PSI;3 BPM AND 360 PSI. 18:00 - 00:00 6.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 8770'TO 9034'DPM. -UP WEIGHT=200K LBS,DOWN WEIGHT= 130K LBS. -40 RPM;ROTATING WEIGHT=152K LBS. -TORQUE ON BTM=9K FT-LBS;TORQUE OFF BTM=8K FT-LBS. -550 GPM;3175 PSI ON BTM;2837 PSI OFF BTM. -WEIGHT ON BIT= 10K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. -CALCULATED ECD=10.75;ACTUAL ECD= 10.39. FROM 18:00 HRS TO 00:00 HRS: ART= 1.60 HRS;AST= 1.25 HRS;ADT=2.85 HRS. SLOW PUMP RATES AT 22:40: -TMD=8968',TVD=7737'. -PUMP 1 --2 BPM AND 290 PSI;3 BPM AND 380 PSI. -PUMP 2--2 BPM AND 290 PSI;3 BPM AND 370 PSI. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 23 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/8/2011 00:00 - 02:30 2.50 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 9034'TO 9130'DPM. -UP WEIGHT=200K LBS,DOWN WEIGHT= 130K LBS. -40 RPM;ROTATING WEIGHT= 148K LBS. -TORQUE ON BTM=8.5K FT-LBS;TORQUE OFF BTM=7K FT-LBS. -550 GPM;3150 PSI ON BTM;2965 PSI OFF BTM. -WEIGHT ON BIT=14K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. SOME OVER PULLS NOTED COMING OFF BOTTOM, UP TO 8K LBS,ON A FEW CONNECTIONS. 300'FROM THE THRZ.SPIKE FLUID WITH BLACK PRODUCTS NEEDS TO BE CUT BACK TO 9.8 PPG FROM 10.0 PPG. AT 01.30 DRILLER FLOW CHECKED WELL AND NOTED SOME FLOW.WELL WAS SHUT `j/ IN AND TP AND WSL NOTIFIED. �V]�,' -SIDPP=10 PSI;SICP=10 PSI. -BLED DRILL PIPE PRESSURE TO 0 AND SHUT BACK IN. -DRILL PIPE PRESSURE REMAINED 0. -OPENED CHOKE AND BLED TO GAS BUSTER FOR 5 MIN. -NO FLOW NOTED. -CLOSED CHOKE AND MONITORED PRESSURES FOR 5 MIN. -SIDPP=0;SICP=0. -DETERMINED WELL WAS BREATHING AND OPENED ANNULAR. -BLEW DOWN LINES AND CONTINUED DRILLING. -NOTIFIED NS SUPERINTENDENT. SLOW PUMP RATES AT 02:30: -TMD=9127',TVD=7877'. -PUMP 1 --2 BPM AND 320 PSI;3 BPM AND 400 PSI. -PUMP 2--2 BPM AND 300 PSI;3 BPM AND 380 PSI. 02:30 - 03:30 1.00 DRILL P INTI BACK REAMING OUT OF THE HOLE. -FROM 9130'TO 8167'DPM. -BACK REAMING AT 40 FT/MIN. -UP WEIGHT=200K LBS;DOWN WEIGHT= 130K LBS. -ROTATING WEIGHT=150K LBS. -40 RPM AND 8.2K FT-LBS OF TORQUE. -550 GPM AND 2873 PSI. -ECDS=10.47 PPG. BRINGING ON SPIKE FLUID WITH BLACK PRODUCTS INTO PITS AND CUTTING BACK WEIGHT FROM 10.0 PPG TO 9.8 PPG. 03:30 - 04:00 0.50 DRILL P INTI RUN BACK IN THE HOLE WITH BHA#3 MINUS THE GHOST REAMER. -FROM 8167'TO 9130'DPM. Printed 9/6/2011 1:18:30PM , ;, Page 24 of 77 t" J1111,111104 4,111,1,4- Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-O0XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 - 06:00 2.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 9130'TO 9176'DPM. -UP WEIGHT=200K LBS,DOWN WEIGHT= 130K LBS. -40 RPM;ROTATING WEIGHT=130K LBS. -TORQUE ON BTM=8.9K FT-LBS;TORQUE OFF BTM=8.5K FT-LBS. -550 GPM;3138 PSI ON BTM;2870 PSI OFF BTM. -WEIGHT ON BIT=5K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. -CALCULATED ECD=10.75;ACTUAL ECD= 10.47. FROM 00:00 HRS TO 06:00 HRS: ART=0.42 HRS;AST=2.16 HRS;ADT=2.58 HRS. 06:00 - 12:00 6.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 9176'TO 9480'DPM. -UP WEIGHT=205K LBS,DOWN WEIGHT= 135K LBS. -40 RPM;ROTATING WEIGHT=152K LBS. -TORQUE ON BTM=9.1K FT-LBS;TORQUE OFF BTM=8.3K FT-LBS. -550 GPM;2980 PSI ON BTM;2750 PSI OFF BTM. -WEIGHT ON BIT=10K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. -CALCULATED ECD= 10.75;ACTUAL ECD= 10.47. FROM 06:00 HRS TO 12:00 HRS: ART=2.74 HRS;AST=3.88 HRS;ADT=6.62 HRS. SLOW PUMP RATES AT 10:00: -TMD=9410',TVD=8140'. -PUMP 1 --2 BPM AND 360 PSI;3 BPM AND 480 PSI. -PUMP 2--2 BPM AND 340 PSI;3 BPM AND 460 PSI. Printed 9/6/2011 1:18:30PM -th America -ALASKA- BP Page 25 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 18:00 6.00 DRILL P INTI DRILL 8 V2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 9480'TO 9881'DPM. -UP WEIGHT=215K LBS,DOWN WEIGHT= 135K LBS. -80 RPM;ROTATING WEIGHT= 160K LBS. -TORQUE ON BTM=8.9K FT-LBS;TORQUE OFF BTM=8.8K FT-LBS. -550 GPM;3220 PSI ON BTM;3030 PSI OFF BTM. -WEIGHT ON BIT= 12K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. -CALCULATED ECD=10.75;ACTUAL ECD= 10.71. FROM 12:00 HRS TO 18:00 HRS: ART=3.34 HRS;AST= 1.55 HRS;ADT=4.89 HRS. SLOW PUMP RATES AT 18:00: -TMD=9881',TVD=8558'. -PUMP 1 --2 BPM AND 390 PSI;3 BPM AND 510 PSI. -PUMP 2--2 BPM AND 390 PSI;3 BPM AND 500 PSI. 18:00 - 00:00 6.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 9881'TO 10200'DPM. -UP WEIGHT=225K LBS,DOWN WEIGHT= 137K LBS. -100 RPM;ROTATING WEIGHT=162K LBS. -TORQUE ON BTM= 10K FT-LBS;TORQUE OFF BTM=9K FT-LBS. -550 GPM;3200 PSI ON BTM;3038 PSI OFF BTM. -WEIGHT ON BIT= 10K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. -CALCULATED ECD=10.75;ACTUAL ECD= 10.53. FROM 18:00 HRS TO 00:00 HRS: ART=2.71 HRS;AST=0.88 HRS;ADT=3.59 HRS. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 26 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/9/2011 00:00 - 01:30 1.50 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#3 MINUS THE GHOST REAMER. -FROM 10200'TO 10280'DPM. -UP WEIGHT=225K LBS,DOWN WEIGHT= 138K LBS. -100 RPM;ROTATING WEIGHT=162K LBS. -TORQUE ON BTM=10K FT-LBS;TORQUE OFF BTM=9.7K FT-LBS. -550 GPM;3300 PSI ON BTM;3059 PSI OFF BTM. -WEIGHT ON BIT= 10K LBS. -MUD WEIGHT=9.8 PPG IN AND OUT. -CALCULATED ECD=10.75;ACTUAL ECD= 10.55. SLOW PUMP RATES AT 01:10: -TMD=10280',TVD=8905'. -PUMP 1 --2 BPM AND 340 PSI;3 BPM AND 480 PSI. -PUMP 2--2 BPM AND 340 PSI;3 BPM AND 460 PSI. 01:30 - 02:30 1.00 DRILL P INTI CIRCULATED A BOTTOMS UP SAMPLE FOR ONSITE GEOLOGISTS. -ENCOUNTERED A REVERSE DRILLING • BREAK AT 10279'. -CIRCULATED A BOTTOMS UP SAMPLE. -550 GPM AND 3080 PSI. -CONSULTED WITH TOWN GEOLOGIST AND DECIDED TO DRILL ANOTHER 8'MD. -TRACE AMOUNT OF GLAUCONITE SAND. 02:30 - 04:00 1.50 DRILL P INTI DRILLED 8 1/2"INTERMEDIATE HOLE SECTION TO TD WITH BHA#3 MINUS THE GHOST REAMER. -FROM 10280'TO 10288'DPM. -UP WEIGHT=225K LBS,DOWN WEIGHT= 138K LBS. -100 RPM;ROTATING WEIGHT=162K LBS. -TORQUE ON BTM=10K FT-LBS;TORQUE OFF BTM=9.7K FT-LBS. -550 GPM;3300 PSI ON BTM;3059 PSI OFF BTM. -WEIGHT ON BIT=10K LBS. FROM 00:00 HRS TO 04:00 HRS: ART= 1.54 HRS;AST=0.00 HRS;ADT=1.54 (+ HRS. CIRCULATED A BOTTOMS UP SAMPLE FOR Gs� ONSITE GEOLOGISTS. -550 GPM AND 3080 PSI. -CONSULTED WITH TOWN GEOLOGIST AND DECISION WAS MADE TO CALL 10288'TD. -CONFIRMED TOP OF THE SAG RIVER. Printed 9/6/2011 1:18:30PM •th America -ALASKA- BP Page 27 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 - 06:30 2.50 DRILL P INTI SHORT TRIP TO LAST BIT RUN. -FROM 10288'TO 9100'DPM. -PUMP OUT AT 42 GPM AND 278 PSI. -UP WEIGHT=225K LBS;DOWN WEIGHT= 138K LBS. -MONITORED WELL. -NO FLOW -NO LOSSES. -RUN BACK TO BOTTOM ON ELEVATORS. -HOLE WAS STABLE-NO PROBLEMS NOTED. 06:30 - 08:00 1.50 DRILL P INTI CIRCULATED A BOTTOMS UP. -550 GPM AND 3181 PSI. -100 RPM AND 8.5K FT-LBS TORQUE. 08:00 - 19:30 11.50 DRILL P INTI MAD PASS FROM TD TO THE TOP OF THE COLVILLE. -FROM 10288'TO 7280'DPM. -400 GPM AND 1900 PSI. -40 RPM AND 7.6K FT-LBS TORQUE. -BEGAN LOSING FLUID AT 8000'. -REDUCED FLOW RATE TO 350 GPM AND 1330 PSI. -BREATHING BACK ON CONNECTIONS. -LOST 23 BBLS TO HOLE. 19:30 - 20:00 0.50 DRILL P INTI PULL OUT OF THE HOLE ON ELEVATORS. FROM 7280'TO 7060'DPM. -MONITORED WELL PRIOR TO PULLING. -WELL BORE BREATHING BACK FROM MAD PASS. -EXPERIENCED OVERPULLS OF 25K LBS AT 7116',7110'AND 7070' -WORKED PIPE SEVERAL TIMES AT 7070'. -WELL WAS SWABBING WHILE PULLING. 20:00 - 22:00 2.00 DRILL P INTI CIRCULATE WELL CLEAN. -RAN BACK IN THE HOLE FROM 7060'TO 7436'DPM. -CIRCULATED 2.5 BOTTOMS UP,1024 BBLS. -500 GPM AND 2300 PSI. -100 RPM AND 6K FT-LBS TORQUE. -LOTS OF FINE RETURNS ON FIRST BOTTOMS UP. -RETURNS CLEANED UP ON SECOND BOTTOMS UP. -ECDS WENT FROM 10.5 TO 10.38 DURING CIRCULATION. -LOSSES WHILE CIRCULATING STOPPED ABOUT HALFWAY THROUGH SECOND BOTTOMS UP. -LOST 15 BBLS TO THE WELL. 22:00 - 00:00 2.00 DRILL P INTI PULL OUT OF THE HOLE ON ELEVATORS. -FROM 7436'TO 5651'DPM. -DID NOT NOTICE ANY SUBSTANTIAL OVERPULLS. 7/10/2011 00:00 - 02:30 2.50 DRILL P INTI CONTINUE TO PULL OUT OF THE HOLE ON ELEVATORS. -FROM 5651'TO 612'DPM. -DID NOT NOTICE ANY SUBSTANTIAL OVERPULLS ON TRIP OUT. -DRIFTED FROM 3404'TO SURFACE WITH 2 1/4"DRIFT. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 28 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(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 DRILL P INTI LAY DOWN BHA#3,8 1/2"INTERMEDIATE ASSY. -PJSM WITH RIG CREW AND SHCLUMBERGER DD AND MWD. -LAY DOWN ALL BHA COMPONENTS. -REMOVE AND LAY DOWN SOURCE FROM MWD TOOLS. • -PULL WEAR BUSHING AND INSTALL TEST PLUG. 06:00 - 07:30 1.50 BOPSUR P INTI CHANGE UPPER PIPE RAMS., -FROM 3 1/2"x 6"VBR TO 7"PIPE RAMS. 07:30 - 10:30 3.00 BOPSUR P INTI TESTED BOPE PER AOGCC REGULATIONS AND BP POLICY. -TESTED THE UPPER PIPE RAMS AND BOPE USED DURING WELL-SHUT DURING DRILLING OPERATIONS. -PRESSURE TESTED TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MIN. -THE HCR CHOKE VALVES. -THE UPPER 7"PIPE RAMS WITH A 7" TEST JOINT. -THE ANNULAR PREVENTER WITH 4 1/2" TEST JOINT. -TESTED THE SUPER CHOKE. 10:30 - 11:00 0.50 BOPSUR P INTI RIG DOWN BOPE TEST EQUIPMENT. 11:00 - 15:00 4.00 CASING P INTI RIG UP TO RUN 7",26 LB/FT VAMTOP LINER WITH TORQUE TURN MONITORING. -PJSM WITH RIG CREW AND CASING CREW. 15:00 - 16:30 1.50 CASING P INTI RUN 7",26 LB/FT, L-80,VAMTOP HC LINER. -PJSM WITH RIG CREW,CASING CREW AND BAKER REPRESENTATIVE. -TO 127'MD. -OPTIMUM MAKE UP TORQUE-11,950 FT-LBS. -BAKERLOK THE FIRST 3 JOINTS. -USED JET LUBE SEAL GUARD THREAD COMPOUND ON ALL VAMTOP HC THREADS. -ONE FREE FLOATING,OMD SPLIT RIB HYDROFORM CENTRALIZER FOR THE FIRST 1000'. MAKE UP SHOE TRACK AND TEST FLOATS. -FRANK'S TOOL LEAKING-CHANGE CUP SIZE. -CHANGE FROM 26-29#TO 22-24#. 16:30 - 23:00 6.50 CASING P INTI RUN 7",26 LB/FT, L-80,VAMTOP HC LINER. -FROM 127'TO 3369'MD. -OPTIMUM MAKE UP TORQUE-11,950 FT-LBS. -USED JET LUBE SEAL GUARD THREAD COMPOUND ON ALL VAMTOP HC THREADS. -ONE FREE FLOATING,OMD SPLIT RIB HYDROFORM CENTRALIZER FOR THE FIRST 1000'. CIRCULATE A BOTTOMS UP EVERY 1000'. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 29 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27©83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 23:30 0.50 CASING P INTI CIRCULATE AND CONDITION BEFORE EXITING THE WINDOW AT 3404'. -UP WEIGHT=98K LBS;DOWN WEIGHT= 96K LBS. -PUMPED 175 BBLS. -STAGED UP TO 210 GPM AND 340 PSI. -NO LOSSES NOTED. 23:30 - 00:00 0.50 CASING P INTI RUN 7",26 LB/FT, L-80,VAMTOP HC LINER. -FROM 3369'TO 3695'MD. -OPTIMUM MAKE UP TORQUE-11,950 FT-LBS. -USED JET LUBE SEAL GUARD THREAD COMPOUND ON ALL VAMTOP HC THREADS. -UP WEIGHT=107K LBS;DOWN WEIGHT= 104K LBS. 7/11/2011 00:00 - 00:30 0.50 CASING P INTI RUN 7",26 LB/FT, L-80,VAMTOP HC LINER. -FROM 3695'TO 4105'MD. -OPTIMUM MAKE UP TORQUE-11,950 FT-LBS. -USED JET LUBE SEAL GUARD THREAD COMPOUND ON ALL VAMTOP HC THREADS. -UP WEIGHT=115K LBS;DOWN WEIGHT= 105K LBS. 00:30 - 01:30 1.00.._ CASING P INTI CIRCULATE AND CONDITION WELLBORE. -130 GPM AND 380 PSI. 01:30 - 02:00 0.50 CASING P INTI RUN 7",26 LB/FT, L-80,VAMTOP HC LINER. -FROM 4061'TO 4514'MD. -OPTIMUM MAKE UP TORQUE-11,950 FT-LBS. -USED JET LUBE SEAL GUARD THREAD COMPOUND ON ALL VAMTOP HC THREADS. -UP WEIGHT=124K LBS;DOWN WEIGHT= 113K LBS. 02:00 - 02:30 0.50 CASING P INTI CIRCULATE AND CONDITION WELLBORE. -130 GPM AND 380 PSI. 02:30 - 03:00 0.50 CASING P INTI RUN 7",26 LB/FT, L-80,VAMTOP HC LINER. -FROM 4474'TO 5130'MD. -OPTIMUM MAKE UP TORQUE-11,950 FT-LBS. -USED JET LUBE SEAL GUARD THREAD COMPOUND ON ALL VAMTOP HC THREADS. -UP WEIGHT= 140K LB;DOWN WEIGHT 117K LB. 03:00 - 03:30 0.50 CASING P INTI CIRCULATE AND CONDITION WELLBORE. -104 GPM AND 370 PSI. 03:30 - 05:30 2.00 CASING P INTI RUN 7",26 LB/FT, L-80,VAMTOP HC LINER. -FROM 5130'TO 6154'MD. -OPTIMUM MAKE UP TORQUE-11,950 FT-LBS. -USED JET LUBE SEAL GUARD THREAD COMPOUND ON ALL VAMTOP HC THREADS. -UP WEIGHT= 160K LB;DOWN WEIGHT 125K LB. 05:30 - 06:00 0.50 CASING P INTI CIRCULATE AND CONDITION WELLBORE. -104 GPM AND 400 PSI. 06:00 - 07:00 1.00 CASING P INTI RIG DOWN THE FRANK'S FILL UP TOOL. Printed 9/6/2011 1:18:30PM i-th America -ALASKA- BP Page 30 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:00 - 08:00 1.00 CASING P INTI RUN 7",26 LB/FT, L-80,VAMTOP HC LINER. -FROM 6154'TO 7012'MD. -OPTIMUM MAKE UP TORQUE-11,950 FT-LBS. -USED JET LUBE SEAL GUARD THREAD COMPOUND ON ALL VAMTOP HC THREADS. -UP WEIGHT= 180K LB;DOWN WEIGHT 130K LB. 08:00 - 10:00 2.00 CASING P INTI RIG DOWN CASING RUNNING EQUIPMENT. CHANGE FROM LONG BAILS TO SHORT BAILS. PICK UP 15'PUP JOINT. 10:00 - 12:30 2.50 CASING P INTI RUN IN THE HOLE WITH THE 7"VAMTOP LINER ON STANDS OF 4"DRILL PIPE FROM THE DERRICK. -FROM 7012'TO 7160'DPM. -CIRCULATE 1.5 TIMES LINER VOLUME(342 BBLS). AT 3 BPM EXPERIENCED A LOSS RATE OF 150 BPH. -REDUCED PUMP RATES TO 2.5 BPH WITH A 36 BPH LOSS RATE. -2.5 BPM AND 300 PSI. -UP WEIGHT=210K LBS;DOWN WEIGHT 135K LBS. 12:30 - 14:30 2.00 CASING P INTI CONTINUE TO RUN IN THE HOLE WITH THE 7" VAMTOP LINER ON 4"DRILL PIPE FROM THE DERRICK. -FROM 7160'TO 9323'DPM. -DOWN WEIGHT=127K LBS. 14:30 - 16:30 2.00 CASING P INTI CIRCULATE THE WELL BORE CLEAN PRIOR TO ENTERING THE HRZ. -126 GPM AND 400 PSI. -UP WEIGHT=275K LBS;DOWN WEIGHT= 135K LBS. 16:30 - 19:00 2.50 CASING P INTI CONTINUE TO RUN IN THE HOLE WITH THE 7" VAMTOP LINER ON 4"DRILL PIPE FROM THE DERRICK. -FROM 9323'TO 10263'DPM. -UP WEIGHT=285K LBS;DOWN WEIGHT= 127K LBS. -HAD TO WORK TO GET THROUGH TIGHT HOLE FROM 9620'TO 9830'WITH 50-60K LBS DOWN DRAG. 19:00 - 19:30 0.50 CEMT P INTI RIG UP CEMENT HEAD AND CEMENT LINES. 19:30 - 20:00 0.50 CASING P INTI CONTINUE TO RUN IN THE HOLE WITH THE 7" • VAMTOP LINER. -TO 10288'MD,8913'TVD -WASHED DOWN THE LAST 20'AT 1 BPM AND 353 PSI. -PICKED UP 2'OFF BOTTOM. -DOWN WEIGHT=130K LBS. -FINAL SET DEPTH FOR 7",26#, L-80 VAMTOP HC LNR @ 10286'MD,8911'TVD. Printed 9/6/2011 1:18:30PM rth America ALASKA BP Page 31 of 77 Operation Summary Report " Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 20:00 - 00:00 4.00 CASING P INTI CIRCULATED AND CONDITIONED THE WELL FOR CEMENTING. -STAGED PUMPS UP IN 1/2 BPM INCREMENTS. -CIRCULATED UNTIL RETURNS WERE 9.8 PPG. -INITIAL RETURNS WERE 10.0+PPG. -218 GPM AND 830 PSI. -LOSS RATE DECREASED AS HEAVY MUD WAS DISPLACED FROM WELL. -AT 20:00 HRS LOSS RATE=35 BPH. -AT 22:30 HRS LOSS RATE=0 BPH. -TOTAL LOSSES TO WELLBORE=30 BBL. 7/12/2011 00:00 - 00:30 0.50 CEMT P INTI CONTINUED TO CIRCULATE AND CONDITION WELL FOR CEMENTING. -CIRCULATE UNTIL RETURNS ARE 9.8 PPG. INITIAL RETURNS WERE 10.0+PPG. -218 GPM AND 830 PSI. -LOSS RATE DECREASED AS HEAVY MUD WAS DISPLACED FROM WELL. -AT 20:00 HRS LOSS RATE=35 BPH. -AT 22:30 HRS LOSS RATE=0 BPH. -TOTAL LOSSES TO WELLBORE =30 BBL. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 32 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 00:30 - 03:30 3.00 CEMT P INTI CEMENT 7",26 LB/FT,VAMTOP HC LINER. -PJSM WITH RIG CREW,SCHLUMBERGER CEMENTERS, BAKER REPRESENTATIVES, AND CH2MHILL DRIVERS. -BATCH UP 15.8 PPG,TYPE`G'CEMENT. CVAC -YIELD=1.16 CUFT/SK. 1" -MIX WATER RATIO=5.103 GAUSK. ta'C -PICK UP 250K LBS TO PUT LINER IN TENSION. QS 01:20-PUMP 30 BBLS 10.5PPG MUDPUSH II. 5 BPM AND 920 PSI. -SHUT DOWN PUMPS,CLOSE LOWER TIW VALVE. -PRESSURE TEST LINES TO 250/4500 PSI. -GOOD TEST. 01:40-OPEN LOWER TIW VALVE AND LINE UP TO PUMP CEMENT. -PUMP 52,7 BBLS OF 15.8 PPG,TYPE 'G'CEMENT. -4 BI3M AND 998 PSI. 01:55-SHUT DOWN PUMPS AND DROP DRILL PIPE WIPER DART. -CHASE DART WITH 10.3 BBLS OF FRESH WATER. -5 BPM AND 426 PSI. 02:00-LINE UP AND BEGIN DISPLACING CEMENT WITH RIG PUMPS. -STAGE UP TO 5 BPM AND 178 PSI. -LATCHED AND SHEARED LINER WIPER PLUG. -22.8 BBLS INTO DISPLACEMENT. -CONTINUED DISPLACING WITH 9.8 PPG LSND. -58 BBLS AWAY:5 BPM AND 509 PSI. -115 BBLS AWAY:5 BPM AND 534 PSI. -173 BBLS AWAY:5 BPM AND 547 PSI. -187 BBLS AWAY:5 BPM AND 637 PSI. -196 BBLS AWAY:4 BPM AND 1023 PSI. -REDUCED RATE TO 1.5 BPM. -LOST RETURNS,1300 PSI. -211 BBLS AWAY:2.5 BPM AND 1061 PSI. -REGAINED RETURNS. -MUDPUSH AT THE SHOE. -231 BBLS AWAY:2.5 BPM AND 608 PSI. -242 BBLS AWAY:2.5 BPM AND 679 PSI. -CEMENT AT THE SHOE, ROUNDING CORNER TO BACKSIDE. -265 BBLS AWAY:2.5 BPM AND 736 PSI. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 33 of 77 Operation Summary Report Common Well Name: 13-27 1AFE No Event Type: RE-ENTER-ONSHORE (RON) Start Date. 6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) -277 BBLS AWAY:2 BPM AND 791 PSI. -280 BBLS AWAY:2 BPM AND 803 PSI. -283 BBLS AWAY:2 BPM AND 811 PSI. -283.5 BBLS AWAY:BUMPED PLUG. 03:20-CEMENT IN PLACE. CONTINUED TO PRESSURE UP TO 2300 PSI AND SET HANGER. -SET DOWN 100K LBS. PRESSURED UP TO 4226 PSI AND SET LINER TOP PACKER. TOP OF LINER=3248'MD.3236'TVD TOP OF INSERT LANDING COLLAR=10,197' MD. TOP OF FLOAT COLLAR=10,241'MD. TOP OF FLOAT SHOE=10,284'MD. ESTIMATED TOP OF CEMENT BASED ON LIFT PRESSURE=9010'MD(1275'ABOVE SHOE a 10286'): -ORIGINAL SLB CEMCADE MODEL BUMP PRESSURE PROJECTED TO BE 860 PSI W/10 PPG MUD FOR 1500'CMT HEIGHT -ACTUAL BUMP PRESSURE W/9.8 PPG MUD (DIFFERENCE OF 93 PSI HYDROSTATIC)=811 PSL -RATIO CALCULATED TOC=(1500'*811 PSI)/ (860 PSI+93 PSI)=1275'OF CEMENT HEIGHT 03:30 - 04:00 0.50 CEMT P INTI RIG DOWN CEMENTING EQUIPMENT. MOVE OUT SCHLUMBERGER. 04:00 - 05:00 1.00 CASING P ` INTI VERIFY LINER HANGER AND LINER TOP. PACKER SET AND PULL OUT OF THE HOLE. -PICK UP AND EXPOSE DOG SUB ON LINER RUNNING TOOL. -SLACK BACK OFF AND STACK OUT ON LINER TO ENSURE SET. -PRESSURE UP AND PULL OUT OF LINER. -OBSERVED PRESSURE DROP AS PACK-OFF CLEARED LINER TOP. -PICKED UP ABOVE LINER TOP AND CIRCULATED DEBRIS. -450 GPM AND 651 PSL -RECIPROCATED 30'WHILE CIRCULATING. -PULL OUT OF THE HOLE WITH THE LINER RUNNING TOOL. 05:00 - 07:00 2.00 BOPSUR P INTI CHANGEOUT TOP PIPE RAMS FROM 7"RAMS TO 3-1/2"X 6"VARIABLE BORE PIPE RAMS. -CLOSE BLIND RAM FOR MECHANICAL BARRIER. HOLE FULL OF 9.8 PPG LSND MUD. 07:00 - 08:30 1.50 BOPSUR P INTI RIGUP TO TEST BOPE. Printed 9/6/2011 1.18.30PM rth America -ALASKA- BP Page 34 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM 1 Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 15:00 6.50 BOPSUR P INTI PRESSURE TEST BOPE PER AOGCC REGULATIONS AND BP ADWOP. STATE'S RIGHT TO WITNESS WAIVED BY BOB NOBLE, AOGCC REPRESENTATIVE. ALL TESTS WITNESSED BY BP WSL AND NABORS TOOLPUSHER(SEE ATTACHED SIGNED PRESSURE CHARTS). -PRESSURE TESTED TO 250 PSI LOW AND co v 3500 PSI HIGH FOR 5 CHARTED MINUTES. -TESTED ALL CHOKE MANIFOLD VALVES e<47,. 1 (16 TOTAL)+CHOKE/KILL LINES -MANUAL CHOKE AND MANUAL KILL VALVES. -HCR CHOKE AND HCR KILL VALVES (CLOSING TIME BOTH VALVES=2 SECS) -4"FULL OPENING SAFETY VALVES. -4"DART VALVE. -TOP DRIVE AIR ACTUATED IBOP. -LOWER MANUAL IBOP ON TOP DRIVE. -BLIND/SHEAR RAMS(CLOSING TIME= 12 SEC) -UPPER3-1/2"X6"VBRSWITH4"&4-1/2" TEST JOINTS(CLOSING TIME ON 4"TEST JOINT=15 SEC) -LOWER 2-7/8"X 5"VBRS WITH 4-1/2" TEST JOINT -TESTED THE SUPER CHOKE AND MANUAL BEAN CHOKE. -2500 PSI HIGH FOR 5 CHARTED MINUTES. -PERFORMED AN ACCUMULATOR DRAWDOWN TEST. -15 SEC TO 200 PSI,82 SEC TO FULL 3000 PSI PRESSURE. -5 BOTTLES WITH 2000 PSI. -TESTED THE SIERRA GAS MONITORING SYSTEM. -TESTED THE ANNULAR PREVENTER WITH 2-7/8",4"&4-1/2"TEST JOINTS. -ANNULAR PREVENTER PASSED 250 PSI LOW AND 3500 PSI HIGH TESTS WITH 4"& 4-1/2"TEST JOINTS. -TEST WITH 2-7/8"TEST JOINT: 5 MIN 250 PSI LOW(PASS)AND 3500 PSI HIGH(FAIL). -CLOSING TIME ON 2-7/8"TEST JOINT=23 SEC -DECISION MADE TO CHANGEOUT ANNULAR PREVENTER. -PRESSURE TESTING CONTINUED INTO 7/13/2011 15:00 - 20:30 5.50 BOPSUR N SFAL 10,288.00 INTI CHANGEOUT 13-5/8"HYDRIL ANNULAR PREVENTER RUBBER ELEMENT -HELD PRE-JOB SAFETY MTG -PULL BELL NIPPLE, PULL DUTCH RISER FLANGE, BREAK CAP ON ANNULAR PREVENTER. 20:30 - 21:30 1.00 BOPSUR P INTI SAFETY STANDDOWN. MEETING HELD WITH RIG CREW AND BP LEADERSHIP TO DISCUSS PROCESS SAFETY. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 35 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:30 - 23:00 1.50 BOPSUR N SFAL 10,288.00 INTI CONTINUE CHANGING OUT ANNULAR PREVENTER RUBBER ELEMENT -INSTALL NEW ANNULAR PREVENTER -INSTALL DUTCH RISER FLANGE,INSTALL BELL NIPPLE. 123:00 - 00:00 1.00 BOPSUR N SFAL 10,288.00 INTI PREPARE TO RE-TEST ANNULAR PREVENTER. -PU 2-7/8"TEST JOINT WITH TEST PLUG& RIH. -FILL STACK AND LINES. -FUNCTION NEW ELEMENT ON TEST JOINT MULTIPLE TIMES TO EXERCISE NEW BAG. 7/13/2011 00:00 - 01:30 1.50 BOPSUR INTI PRESSURE TEST ANNULAR PREVENTER TO 250 PSI LOW FOR 5 MIN AND 3500 PSI HIGH FOR 5 MIN ON 2-7/8"TEST JOINT. -TESTS CHARTED AND WITNESSED BY BP WSL&NABORS TOOLPUSHER. 01:30 - 02:00 0.50 BOPSUR INTI COMPLETE BOPE TESTING. PRESSURE TEST LOWER 2-7/8"X 5"VARIABLE BORE RAMS -TEST RAMS TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH. BOTH TESTS CHARTED AND WITNESSED BY WSL& TOOLPUSHER. -CLOSING TIME ON 2-7/8"TEST JOINT=20 SEC -TOTAL BOPE TESTING TIME(WITH ANNULAR C/O)=17.5 HRS 02:00 - 02:30 0.50 BOPSUR INTI RIG DOWN BOP TESTING EQUIPMENT -PULL 2-7/8"TEST JOINT WITH TEST PLUG& LAYDOWN -CLEAR RIG FLOOR. 02:30 - 03:30 1.00 CASING INTI PRESSURE TEST 7"INTERMEDIATE.LNR& 9-5/8"CSG TO 250 PSI LOW FOR 5 MIN AND 3500 PSI HIGH FOR 30 MIN(PASS). -CLOSE BLIND RAMS AND PUMP DOWN KILL LINE. -EXPECTED BBLS TO REACH 250 PSI=.46 BBLS. ACTUAL BBLS PUMPED TO REACH 300 PSI=0.51 BBLS -EXPECTED BBLS TO REACH 3500 PSI=6.4 BBLS. ACTUAL BBLS PUMPED TO REACH 3670 PSI INITIAL SI PRESSURE=6.5 BBLS -PRESSURE LOSS IN FIRST 15 MIN=20 PSI, PRESSURE LOSS IN SECOND 15 MIN=0 PSI. -PRESSURE TEST CHARTED(SEE ATTACHED)AND WITNESSED BY WSL. RESULTS REVIEWED WITH WTL PRIOR TO PROCEEDING ON WITH NEXT STEP. Printed 9/6/2011 1:18:30PM Page 36 of 77 firth America -ALASKA- BP Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:30 - 05:00 1.50 DRILL INTI PICKUP AND MAKEUP 6-1/8"DIRECTIONAL BUILD BHA W/1.69 DEG BENT MOTOR& DIR-GR -PLAN FOR NON-SHEARABLE TOOLS ACROSS BOP STACK IN PLACE -INSTALL WEAR BUSHING -BHA PRIMARILY CONSISTS OF: -HUGHES MX-18HDX INSERT BIT W/(3) 13/32 NOZZLES,TFA=0.389 -SLB SHORTPAK 1.69 DEG BEND MUD MOTOR,0.7 RPG -SLB SLIMPULSE MWD -(3)4-3/4"NM FLEX DC -DAILEY HYDRAULIC DRILLING JARS -TOTAL BHA WEIGHT BELOW JARS @ 633' FROM BIT=15.5 KLBS 05:00 - 14:00 9.00 DRILL INTI PICKUP 4"DRILLPIPE 1X 1 AND RIH WITH 6-1/8"DIRECTIONAL BHA F/SURFACE T/9974' MD. -PERFORM KICK WHILE TRIPPING DRILL -PICK UP 32 STANDS(2976')OF DRILLPIPE IN TOTAL FROM THE PIPE SHED. 14:00 - 15:00 1.00 DRILL INTI SLIP AND CUT 19 WRAPS,134'DRILLING LINE. HELD PJSM&AFTER ACTION REVIEW. 15:00 - 16:00 1.00 DRILL 1NT1 CONTINUE TO TIH F/9974'MD T/TOP OF 7" LNR LANDING COLLAR @ 10198'MD. -MINOR CEMENT STRINGERS ENCOUNTERED 20'ABOVE LANDING COLLAR. -WASHED DOWN THROUGH STRINGERS WITH NO ISSUES;200 GPM,1865 PSI,40 RPM -FINAL PICKUP WEIGHT= 185 KLBS, SLACKOFF WEIGHT= 115 KLBS, ROTATING= 140 KLBS. 16:00 - 18:00 2.00 DRILL INTI SWAP FLUID SYSTEM IN WELL FROM 9.8 PPG LSND TO 8.4 PPG FLOPRO DRILL-IN FLUID. -RACK BACK ONE STAND OF DRILLPIPE T/ • 10162'. RECIPRICATE AND ROTATE DRILLPIPE DURING FLUID SWAP. -PUMP 70 BBLS FRESH WATER,40 BBLS HI VIS PILL AND 485 BBLS(35 BBLS OVER HOLE VOLUME)8.4 PPG FLOPRO DRILL-IN FLUID. -DISPLACE WELL AT 250 GPM AND 1850-2360 PSI CIRC PRESSURE. -FINAL MW IN&MW OUT=8.4 PPG, CONFIRMED BY MUD ENGINEER ON LOCATION. 18:00 - 18:30 0.50 DRILL INTI PERFORM 30 MIN PARTIAL NEGATIVE PRFSSURE TEST ON 7"LINER TOP -8.4 PPG KNOWN FLOPRO FLUID IN HOLE, 9.8 PPG EMW EXPECTED PORE PRESSURE ©3248'MD,3236'TVD=236 PSI DRAWDOWN AT LNR TOP. -MONITOR WELL FOR 30 MINUTES. NO FLOW. FLOW CHECK WITNESSED BY WSL. CONSULTED WTL FOR AUTHORIZATION TO PROCEED. .18:30 - 19:30 1.00 DRILL INTI CLEAN PITS,SHAKERS AND POSSUM BELLY. FILL PITS WITH 8.4 PPG FLOPRO MUD. Printed 9/6/2011 1:18:30PM -)rth America -ALASKA- BP Page 37 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27©83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:30 - 20:00 0.50 DRILL INTI RIH F/10162'T/10198'AND TAG LANDING COLLAR INSERT(ON DEPTH). CLEANOUT SHOE TRACK T/10288'MD. -PERFORM KICK WHILE TRIPPING DRILL& HOLD AAR. -DRILL OUT TOP PLUG IN LANDING COLLAR; 1-3 KLBS WOB,1825 PSI,40 RPM,4 KFT-LBS TORQUE. RUBBER OBSERVED ACROSS SHAKER SCREENS. -CONTINUE TO RIH THROUGH SHOE TRACK WITH NO RESISTANCE. NO HARD CEMENT PRESENT IN SHOE TRACK BETWEEN LANDING COLLAR AND FLOAT COLLAR. SOFT CEMENT NOTICED IN RETURNS OVER SHAKERS. PH OF FLUID RETURNS INCREASED TO 10.9 WHILE CIRCULATING IN SHOE TRACK. ORIGINAL PH OF FLORPRO FLUID=9.3. -DRILL OUT LOWER WIPER PLUG IN FLOAT COLLAR WITH SAME PARAMETERS AS TOP PLUG. -RIH TO FLOAT SHOE @ 10286'+2'T/ PREVIOUSLY DRILLED MD OF 10288'. WITH NO RESISTANCE. NO HARD CEMENT PRESENT BETWEEN FLOAT COLLAR AND FLOAT SHOE. NOTE: NO HARD CEMENT FOUND IN SHOE- TRACK. HOETRACK. INDICATIONS OF SOFT CEMENT(PH INCREASE AND GREEN CEMENT OVER SHAKERS)IN SHOE TRACK WERE OBSERVED WHILE CIRCULATING WELLBORE) 20:00 - 23:00 3.00 DRILL INTI DIRECTIONALLY DRILL 6-1/8"HOLE F/10288' T/10308'(20'NEW FORMATION). SLIDE: 10293'-10308' SLIDING PARAMeTERS: 15 KLBS WOB,250 GPM,1750 PSI CIRC PRESSURE,PUWT= 175 KLBS,SOWT=125 KLBS,ROTWT= 140 KLBS. -TOOK SLOW PUMP RATES -FLOW CHECK WELL. NO FLOW&NO LOSSES. WELL STABLE. AST=0.79 HRS,ART=.1 HRS,ADT=0.89 HRS 23:00 - 00:00 1.00 DRILL INTI CIRCULATE HOLE CLEAN FOR FORMATION INTEGRITY TEST. -CIRCULATE ONE BOTTOMS UP+50%,250 GPM,1750 PSI -FINAL MW IN=MW OUT=8.4 PPG,55 SEC/QT Printed 9/6/2011 1:18:30PM )rth America -ALASKA- BP Page 38 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/14/2011 00:00 - 01:00 1.00 DRILL P INTI PERFORM FORMATION INTEGRITY TEST TO 10 PPG EMW AT 7"LNR SHOE,8911'TVD -RACK ONE STAND BACK TO PULL UP INTO CASING SHOE AFTER DRILLING 20'NEW FORMATION -RIGUP TO PUMP DOWN BOTH DRILLSTRING IA AND BACKSIDE. CLOSE UPPER PIPE RAMS G a• FOR TEST. -PRESSURE UP WELL AT 1/4 BPM. 1.2 BBL PUMPED TO PRESSURE UP TO 741 PSI. -10 PPG EMW=741 PSI APPLIED SURFACE PRESSURE=(10 PPG-8.4 PPG) 0.052*8913' -NO LEAKOFF OBSERVED IN 10 MIN MONITOR PERIOD AFTER SHUTTING PUMPS OFF. TEST CHARTED AND WITNESSED BY WSL(SEE ATTACHED). -APPROX 1 BBL OBSERVED TO FLOWBACK WHEN PRESSURE BLEED OFF -TOOK SLOW PUMP RATES AND UPDATED KILL SHEET 01:00 - 10:00 9.00 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/10308'MD T/10645'MD(BUILD SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.4 PPG. -PRIMARILY SLIDE DRILLING: SLIDING TO ACHIEVE—20 DEG/100'DOGLEGS REQUIRED FOR BUILD SECTION - 15-40 KLBS WOB,2025 PSI ON BTM CIRC PRESSURE,1850 PSI OFF BOTTOM CIRC PRESSURE,200 PSI DIFFERENTIAL PRESSURE -250 GPM @ 0.7 RPG FOR MUD MOTOR= 175 RPM AT BIT -AVERAGE ROP WITH CONNECTIONS=67 FPH. SLIDING ROP INCREASED AFTER TSAD -NO FLUID LOSSES TO WELLBORE WHILE DRILLING. MW IN=MW OUT=8.4 PPG,48 SEC/QT -BACKGROUND GAS=+/-300 UNITS. MAX= 407 UNITS. MUD LOGGERS RELEASED. FORMATION&MARKER TOPS: TSHU=10320'MD,8926'TVD(19'LOW TO PROG) TSAD= 10408'MD,9005'TVD(28'LOW TO PROG) 43P= 10455'MD,9030'TVD(30'LOW TO PROG) 44P=10498'MD,9045'TVD(16'LOW TO PROG) INVERT=10569'MD,9055'TVD(2'HIGH TO PROG) LANDED BUILD SECTION @ 10630'MD, >90 DEG INC Printed 9/6/2011 1:18:30PM •,rth America -ALASKA- BP Page 39 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(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 DRILL P PROD1 DIRECTIONALLY DRILL&SURVEY 6-1/8" HOLE F/10645'MD T/END OF BUILD SECTION @ 10761'MD. -BEGIN HORIZONTAL SECTION OF WELL -8-10 KLBS WOB,1800-1850 PSI OFF BTM CIRC PUMP PRESSURE,1900-2000 PSI ON BTM PUMP PRESSURE,8 KFT-LBS TORQUE OFF BTM,8-10 KFT-LBS TORQUE ON BTM. -250 GPM,40 RPM AT SURFACE,215 RPM AT BIT. -NO FLUID LOSSES WHILE DRILLING. MW IN =MW OUT=8.4+PPG,47 SEC/QT -AVERAGE ROP WITH CONNECTIONS=47 FPH -FINAL DIRECTIONAL SURVEY PROJECTION =10761'MD,9037.85'TVD,96.8 DEG INC, 247.69 DEG AZI,3316'SOUTH,1901'EAST SLIDES: 10683'-10695'@ 180 DEG,10725'- 10745'@ 180 DEG. BOTH SLIDES PRODUCED UNEXPECTED INCREASES IN INCLINATION AFTER ATTEMPTING TO DROP. TOTAL ACTUAL DRILLING TIME FOR BHA#5= 6.66 HOURS AST=5.48 HRS,ART= 1.18 HRS 12:30 - 14:00 1.50 DRILL P PROD1 CIRCULATE WELL CLEAN FOR TOH. -CIRCULATE ONE BOTTOMS UP(356 BBLS) AND OBSERVE RETURNS OVER SHAKERS. NO MAJOR CUTTINGS RETURNED. -250 GPM,1800 PSI,RECIPROCATING& ROTATING PIPE. -TAKE SLOW PUMP RATES AND UPDATE KILL SHEET. -SPR#1: 620 PSI @ 2 BPM&840 PSI @ 3 BPM -SPR#2: 650 PSI @ 2 BPM&850 PSI @ 3 BPM 14:00 - 20:30 6.50 DRILL P PROD1 POOH F/10762'MD T/BHA. -FLOW CHECK WELL PRIOR TO PULLING OFF BOTTOM. NO FLOW. -WSL ON RIG FLOOR. PULL FIRST 5 STANDS F/10762'T/10255'AND FLOW CHECK WELL. WELL STABLE. -TIGHT SPOT ENCOUNTERED AT 10614'. WORKED THROUGH WITH 30 KLBS OVERPULL. -PUMP 25 BBL WEIGHTED DRY JOB. -TOH F/10255'T/BHA @ 161', HOLE TAKING CORRECT FILL DURING TRIP. TRIP SHEET CHECKED BY WSL. -CHECK FOR FLOW AT THE 7"LNR TOP,AND BEFORE THE BHA ENTERED THE BOP STACK. WELL STABLE AT BOTH CHECKS. Printed 9/6/2011 1:18:30PM rth America-ALAS B ` a `' ®e of 77 0� , Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:30 - 21:30 1.00 DRILL P PROD1 BREAK AND LAYDOWN6-1/8"DIRECTIONAL BHA#5 -CHECK BHA TOOLS -EXTERIOR SCRIBE LINE OK. SET SCREWS ON KEY SLEEVE IN MWD UBHO SUB FOUND LOOSE. MWD FOUND TO HAVE ROTATED INSIDE UBHO SUB UP TO 120 DEG DUE TO LOOSE SCREWS. MIS-ALIGNED MWD TOOL DETERMINED TO BE CAUSE FOR TROUBLE SLIDING AT END OF BUILD HOLE SECTION. -HUGHES INSERT BIT HAS MEDIUM WEAR ON OUTSIDE CUTTERS(A FEW MISSING). CONES STILL ROTATE WELL. -CLEAR RIG FLOOR 21:30 - 22:30 1.00 DRILL P PROD1 PICKUP AND MAKEUP 6-1/8"DIRECTIONAL LATERAL BHA W/1.5 DEG BENT MOTOR& AIM COLLAR(INCLINATION AT BIT), DIR-GR& RESISTIVITY -PLAN FOR NON-SHEARABLE TOOLS ACROSS BOP STACK IN PLACE -BHA PRIMARILY CONSISTS OF: -HYCALOG MSF513D-B1C PDC BIT W/(5) 10/32 NOZZLES,TFA=0.383 -SLB 1.5 DEG BEND MUD MOTOR,0.33 RPG -SLB IMPULSE 25K HIGH FLOW MWD, CORRECTED W/IIFR+MS -(3)4-3/4"NM FLEX DC -WELL COMMANDER CIRC SUB -DAILEY HYDRAULIC DRILLING JARS -CORROSION RING AND PORTED FLOAT INSTALLED. -WSL WITNESSED SCRIBE IN HOLE F -TOTAL BHA WEIGHT IN AIR BELOW JARS @ 177'FROM BIT= 10 KLBS 22:30 - 00:00 1.50 DRILL P PROD1 PU 4"DRILLPIPE AND RIH 1 X 1. TIH W/6-1/8" DIR BHA#6 TO 350'MD @ MIDNIGHT. -NEED TO PICKUP 72 JTS FOR DRILLSTRING TO REACH TD. 7/15/2011 00:00 - 03:00 3.00 DRILL P PROD1 CONTINUE TO PU 4"DRILLPIPE AND RIH 1 X 1. TIH W/6-1/8"DIR BHA#6 F/350'AT MIDNIGHT T/2500'ON SINGLES. -PICKUP 72 JTS FOR DRILLSTRING TO REACH TD. TOTAL STANDS IN DERRICK= 160(14880') 03:00 - 07:00 4.00 DRILL P PROD1 CONTINUE TO TIH WITH STANDS F/2500'T/ PREVIOUSLY DRILLED MD OF 10761'MD. -NO TIGHT SPOTS ENCOUNTERED ON TRIP IN HOLE. -WASHED FINAL 20'TO BOTTOM. 250 GPM, 1500 PSI, NO SURFACE ROTATION,83 DOWNHOLE RPM. Printed 9/6/2011 1:18:30PM )rth America -ALASKA- BP Page 41 of 77 Operation Summary Report Common Wet Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-O0XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 07:00 - 08:00 1.00 DRILL P PROD1 CIRCULATE HOLE CLEAN FOR MAD PASS LOGGING RUN -TAKE SURVEY WITH AIM COLLAR(1.5'FROM BIT). INCLINATION @ BIT=95 DEG. -PUMP ONE ROUND TRIP HOLE VOLUME(511 BBLS)AND OBSERVE RETURNS AT SHAKERS. NO MAJOR CUTTINGS RETURNED. -250 GPM,1480 PSI CIRCULATION PRESSURE -FLOW CHECK WELL FOR 10 MIN. NO FLOW. -TOOK SLOW PUMP RATES @ 9039'TVD,8.5 PPG 08:00 - 12:30 4.50 DRILL P PROD1 MAD PASS LOG F/10761'MDT/7"LNR SHOE 10286'MD. -PUMP @ 250 GPM,1500 PSI&POOH @ 180' PER HR PER MWD REP RECOMMENDATIONS -PUWTW/PUMPS ON=165 KLBS. -RIH BACK TO BTM @ 10761'MD. FLOW CHECK WELL. NO FLOW. 12:30 - 18:00 5.50 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/10761'MD T/11086'MD(HORIZONTAL SECTION). -15-30 KLBS WOB,1550-1600 PSI ON BTM CIRC PRESSURE,1450-1500 PSI OFF BOTTOM CIRC PRESSURE,100-200 PSI DIFF PRESSURE -250 GPM; SURFACE RPM=40-60,BIT RPM= 120-140. -SLIDING 15'-30'PER STAND FOR DIRECTIONAL WORK. -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.5 PPG. -NO FLOW CONFIRMED AT EACH CONNECTION PRIOR TO TURNING ON PUMPS. -AVERAGE ROP WITH CONNECTIONS=59 FPH. -NO FLUID LOSSES TO WELLBORE WHILE DRILLING. MW IN=MW OUT=8.5 PPG,43 SEC/QT ACTUAL DRILLING TIME FOR 12:30-18:00 TIME INTERVAL=3.64 HRS AST=2.17 HRS,ART= 1.47 HRS Printed 9/6/2011 1:18:30PM )rth.America -ALASKA- BP Page 42 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No : NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Firs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 00:00 6.00 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/11086'MD T/11499'MD(HORIZONTAL SECTION). -15-20 KLBS WOB,1600-1700 PSI ON BTM CIRC PRESSURE,1400-1500 PSI OFF BOTTOM CIRC PRESSURE,100-200 PSI DIFF PRESSURE 250 GPM;SURFACE RPM=40-80, BIT RPM=100-160. -SLIDING 30'-40'PER STAND FOR DIRECTIONAL WORK. -NO FLOW CONFIRMED AT EACH CONNECTION PRIOR TO TURNING ON PUMPS. -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.6 PPG. -AVERAGE ROP WITH CONNECTIONS=69 FPH. -NO FLUID LOSSES TO WELLBORE WHILE DRILLING. MW IN=MW OUT=8.5+PPG,43 SEC/QT -LIMITING ROTATING PENETRATION RATE TO 125 FPH TO ENSURE ADEQUATE HOLE CLEANING. ACTUAL DRILLING TIME FOR 18:00-00:00 TIME INTERVAL=3.96 HRS AST=1.45 HRS,ART=2.51 HRS 7/16/2011 00:00 - 00:30 0.50 DRILL N WAIT 11,499.00 PROD1 CIRCULATE AND CONDITION WELL -DISCUSS 6'DISCREPANCY IN FORMATION TOPS BETWEEN DRILLING LOG AND MAD PASS LOG. CONSULT ODE AND WELLSITE GEO/MWD. AGREE TO PROCEED ON DRILLING AHEAD WITH DRILLING LOGS. -RECIPROCATE PIPE AND ROTATE AT 40 RPM. 250 GPM,1575 PSI, DH RPMS=120 Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 43 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 00:30 - 06:00 5.50 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/11499'MD T/11846'MD(HORIZONTAL SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.6 PPG. -15-20 KLBS WOB ROTATING,20-30 KLBS WOB SLIDING,1650-1800 PSI ON BTM CIRC PRESSURE,1500-1600 PSI OFF BOTTOM CIRC PRESSURE,100-200 PSI DIFF PRESSURE -250 GPM; SURFACE RPM=40-80, BIT RPM= 100-160,7 KFT-LBS TORQUE ON BTM,5.5 KFT-LBS TORQUE BACKREAMING. -WASH DOWN, NO ROTATION ON CONNECTIONS @ 200 GPM. -AVERAGE ROP WITH CONNECTIONS=64 FPH. -NO FLUID LOSSES TO WELLBORE WHILE DRILLING. MW IN=MW OUT=8.6 PPG,43 SEC/QT -LIMITING ROTATING PENETRATION RATE TO 125 FPH TO ENSURE ADEQUATE HOLE CLEANING. ACTUAL DRILLING TIME FOR 00:30-06:00 TIME INTERVAL=3.13 HRS AST=1.32 HRS,ART=1.81 HRS 06:00 - 12:00 6.00 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/11846'MD T/12268'MD(HORIZONTAL SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.6 PPG. -15-20 KLBS WOB ROTATING,20-30 KLBS WOB SLIDING,1800-1850 PSI ON BTM CIRC PRESSURE,1500-1600 PSI OFF BOTTOM CIRC PRESSURE,100-200 PSI DIFF PRESSURE -250 GPM; SURFACE RPM=40-80, BIT RPM= 100-160,8-9 KFT-LBS TORQUE ON BOTTOM, 6.5 KFT-LBS TORQUE BACKREAMING. -WASH DOWN,NO ROTATION ON CONNECTIONS @ 200 GPM. -AVERAGE ROP WITH CONNECTIONS=64 FPH. -NO FLUID LOSSES TO WELLBORE WHILE DRILLING. MW IN=MW OUT=8.6 PPG,43 SEC/QT ACTUAL DRILLING TIME FOR 06:00-12:00 TIME INTERVAL=3.2 HRS AST= 1.77 HRS,ART= 1.43 HRS Printed 9/6/2011 1:18:30PM )rth America -ALASKA- BP Page 44 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 18:00 6.00 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/12268'MD T/12547'MD(HORIZONTAL SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.6 PPG. -10-20 KLBS WOB ROTATING,20-30 KLBS WOB SLIDING,1600-1850 PSI ON BTM CIRC PRESSURE,1550-1650 PSI OFF BOTTOM CIRC PRESSURE,100-200 PSI DIFF PRESSURE -250 GPM; SURFACE RPM=40-80, BIT RPM= 120-160,7-8 KFT-LBS TORQUE ON BTM,6-6.5 KFT-LBS TORQUE BACKREAMING. -WASH DOWN,NO ROTATION ON CONNECTIONS @ 200 GPM. -AVERAGE ROP WITH CONNECTIONS=64 FPH. -MW IN=MW OUT=8.6 PPG,41 SEC/QT -FAULT#3 IN WELLPLAN CROSSED @+/- 12290'MD. -MINOR LOSSES TO WELLBORE OBSERVED AFTER DRILLING THROUGH FAULT. LOSSES BEGAN @+/-12 BPH AND GRADUALLY DIED OFF. -TOTAL FLOPRO LOSSES TO WELL=20 BBLS. NOTE: DIFFICULTY DROPPING ANGLE WHILE SLIDING. DECISION TO SHORT TRIP BACK TO 7"LINER SHOE AND CIRCULATE WELL CLEAN. CONSULT WITH ODE. ACTUAL DRILLING TIME FOR 12:00-18:00 TIME INTERVAL=2.45 HRS AST=0.4 HRS,ART=2.05 HRS 18:00 - 19:30 1.50 DRILL P PROD1 CIRCULATE AND CONDITION HOLE FOR SHORT TRIP TO 7"LINER SHOE. -100 SURFACE RPM,250 GPM,183 BH RPM, 1600 PSI,RECIPROCATE PIPE 30'. 6.5 KFT-LBS TORQUE. -TAKE SLOW PUMP RATES. -MONITOR WELL FOR 20 MIN. WELL STABLE. NO FLOW AND NO LOSSES TO WELLBORE. 19:30 - 21:30 2.00 DRILL P PROD1 POOH ON ELEVATORS F/12547'T/10270'MD (7"LNR SHOE @ 10,286'). -INITIAL PU WEIGHT=180 KLBS,SLACKOFF WEIGHT=120 KLBS. -MINOR TIGHT SPOTS ENCOUNTERED AT 12300'MD,11895'MD,11590'-11620'MD; WORK PIPE DOWN 1 TOOL JOINT ON EACH TIGHT SPOT AND ABLE TO PULL FREELY AFTERWARDS. MAX PULL DURING TRIP= 205 KLBS,25 KLBS OVER INITIAL 180 KLBS PU WEIGHT. -HOLE TAKING CORRECT AMOUNT OF FILL FOR PIPE 4"DRILLPIPE REMOVAL. -FINAL PU WEIGHT IN SHOE=175 KLBS,SO WEIGHT=124 KLBS. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 45 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site:PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:30 - 23:00 1.50 DRILL P PROD1 OPEN WELL COMMANDER CIRCULATION SUB &CIRCULATE CASED HOLE SECTION CLEAN. -DROP 1.76"BALL AND PUMP DOWN TO WELL COMMANDER SUB AT 80 GPM,440 PSI. PUMP 37 BBLS TO PUSH BALL TO WELL COMMANDER SUB(CALCULATED VOL TO SUB= 106 BBLS). PRESSURE UP TO 2100 PSI TO OPEN CIRCULATION PORTS. -PUMP AT 500 GPM,1600 PSI,40 RPM,4 KFT-LBS TORQUE, RECIPROCATING PIPE -INCREASE IN LARGE SAND GRAINS OBSERVED OVER SHAKERS. CIRCULATED 2+BOTTOMS UP(692 BBLS PUMPED)UNTIL NO CUTTINGS RETURNED OVER SHAKERS. 23:00 - 00:00 1.00 DRILL P PROD1 CIRCULATE 40 BBL STEEL LUBE PILL SURFACE TO SURFACE. -LUBRICATING AGENT FOR CASED HOLE SECTION -DUMP PILL OVERBOARD INTO CUTTINGS TANK -FOLLOW PILL WITH 8.5 PPG FLOPRO MUD. CIRCULATED PILL AROUND AT 500 GPM,1600 PSI,40 RPM,4 KFT-LBS TORQUE. RECIPROCATED FULL STAND OF PIPE DURING CIRCULATION. 7/17/2011 00:00 - 00:30 0.50 DRILL P PROD1 MONITOR WELL. WELL STABLE. NO FLOW AND NO LOSSES. 00:30 - 01:00 0.50 DRILL P PROD1 CLOSE WELL COMMANDER CIRCULATION SUB. -DROP 1.76"BALL AND PUMP DOWN TO CIRC SUB @ 80 GPM,340 PSI. -PUMPED 35 BBLS(VOL TO CIRC SUB=106 BBLS)AND CAUGHT PRESSURE. CONTINUE TO PRESSURE UP TO 2200 PSI TO CLOSE CIRCULATION PORTS. 01:00 - 02:30 1.50 DRILL P PROD1 TIH F/10270'MD T/PREVIOUSLY DRILLED DEPTH OF 12547'MD. -ENCOUNTER TIGHT SPOT @ 12220'MD. UNABLE TO WORK PIPE DOWN. SCREW INTO PIPE WITH TOP DRIVE. WASH& REAMED DOWN W/125 GPM,700 PSI,40 RPM,6 KFT-LBS -PROPER PIPE DISPLACEMENT OBSERVED DURING TIH. -WASH DOWN FINAL 20'TO BOTTOM 02:30 - 03:30 1.00 DRILL P PROD1 CIRCULATE IN 290 BBLS NEW 8.5 PPG FLOPRO MUD INTO SYSTEM. -CIRCULATE THROUGH WELLBORE. DUMP 290 BBLS FROM ACTIVE SYSTEM TO COMBAT RISING SOLIDS AND TO MAINTAIN MW @+/- 8.6 PPG. -PUMP @ 250 GPM,1700 PSI,45 RPM RECIPROCATE TOP 30'OF STAND. -OBSERVED NO MAJOR CUTTINGS OR GAS IN RETURNS FROM BOTTOMS UP CIRCULATION. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 46 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:30 - 06:00 2.50 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/12547'MD T/12659'MD(HORIZONTAL SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.6 PPG. -15-20 KLBS WOB ROTATING,20-30 KLBS WOB SLIDING,1750-1850 PSI ON BTM CIRC PRESSURE,1600-1700 PSI OFF BOTTOM CIRC PRESSURE,100-300 PSI DIFF PRESSURE WHILE SLIDING -250 GPM; SURFACE RPM=40-80, BIT RPM= 120-160,8-9 KFT-LBS TORQUE ON BTM,5.5-6 KFT-LBS TORQUE OFF BTM. -AVERAGE ROP WITH CONNECTIONS=45 FPH. -MW IN=MW OUT=8.6 PPG,43 SEC/QT -NO LOSSES TO THE FORMATION WHILE DRILLING AHEAD. ACTUAL DRILLING TIME FOR 03:30-06:00 TIME INTERVAL=2.06 HRS AST=0.95 HRS,ART= 1.11 HRS 06:00 - 12:00 6.00 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/12659'MD T/12922'MD(HORIZONTAL SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.6 PPG. -15-20 KLBS WOB ROTATING,20-30 KLBS WOB SLIDING,1850-2000 PSI ON BTM CIRC PRESSURE,1750 PSI OFF BOTTOM CIRC PRESSURE,100-300 PSI DIFF PRESSURE WHILE SLIDING -250 GPM; SURFACE RPM=40-80, BIT RPM= 120-160,TORQUE=8 KFT-LBS ON BTM,6 KFT-LBS OFF BTM -AVERAGE ROP WITH CONNECTIONS=44 FPH. -MW IN=MW OUT=8.6 PPG,44 SEC/QT -NO LOSSES TO THE FORMATION WHILE DRILLING AHEAD. ACTUAL DRILLING TIME FOR 06:00-12:00 TIME INTERVAL=2.45 HRS AST=0.66 HRS,ART=1.79 HRS Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 47 of 77 Operation Summary Report Common Well Name: 13-27 i AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 16:00 4.00 DRILL P PROD1 DIRECTIONALLY DRILL AND SURVEY 6-1/8" HOLE F/12922'MD T/13246'MD(HORIZONTAL SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.6 PPG. -10-20 KLBS WOB ROTATING,20-30 KLBS WOB SLIDING,2000-2050 PSI ON BTM CIRC PRESSURE,1700-1750 PSI OFF BOTTOM CIRC PRESSURE,100-300 PSI DIFF PRESSURE WHILE SLIDING -250 GPM; SURFACE RPM=40-80, BIT RPM= 120-160,TORQUE=8-8.5 KFT-LBS ON BTM,6 KFT-LBS OFF BTM -AVERAGE ROP WITH CONNECTIONS=81 FPH. -MW IN=MW OUT=8.6 PPG,45 SEC/QT. INCREASED LUBRICANT IN MUD FROM 2% -4%@ 15:00 CROSS FAULT#4 IN WELL PLAN @ 13200'MD AND BEGIN TO LOSE FLUID TO FORMATION. STOP DRILLING AHEAD AND MONITOR WELL TO MEASURE LOSS RATES. ACTUAL DRILLING TIME FOR 12:00-16:00 TIME INTERVAL=2.92 HRS AST=0 HRS,ART=2.92 HRS 16:00 - 18:00 2.00 DRILL N DPRB 13,246.00 PROD1 MONITOR WELL,MEASURING FLUID LOSSES TO WELLBORE. -STATIC LOSS RATE INITIALLY ESTABLISHED @ 120 BPH -DRILL 25'NEW HOLE F/13200'MD T/13225' MD TO ESTABLISH DYNAMIC RATE. -80 RPM,8.5 KFT-LBS TORQUE,180 GPM, 1400 PSI ON BTM,15 KLBS WOB -INITIAL DYNAMIC LOSS RATE MEASURED TO BE 250 BPH -STATIC LOSS RATE DROPPED TO 84 BPH. -DRILL 21'NEW HOLE F/13225'MD T/13246' MD TO MEASURE DYNAMIC RATE. -80 RPM,8.5 KFT-LBS TORQUE,180 GPM, 1400 PSI ON BTM,15 KLBS WOB -DYNAMIC LOSS RATE DROPPED TO 135 BPH -STATIC LOSS RATE DROPPED TO 65 BPH. 18:00 - 20:30 2.50 DRILL N DPRB 13,246.00 PROD1 POOH ON ELEVATORS F/13246'T/10270'MD (7"LNR SHOE @ 10,286'). -INITIAL PU WEIGHT=180 KLBS,SLACKOFF WEIGHT=120 KLBS. -TIGHT SPOTS ENCOUNTERED AT 13,017' MD, 12989'-12875'MD,12813'MD,12787'MD, 12581';WORK PIPE DOWN 1 TOOL JOINT ON EACH TIGHT SPOT AND ABLE TO PULL FREELY AFTERWARDS. MAX PULL DURING TRIP=25 KLBS OVER INITIAL 190 KLBS PU WEIGHT. -HOLE TAKING CORRECT AMOUNT OF FILL FOR PIPE 4"DRILLPIPE REMOVAL. -FINAL PU WEIGHT IN SHOE=175 KLBS, SO WEIGHT= 124 KLBS. Printed 9/6/2011 1:18:30PM )rth America -ALASKA- BP Page 48 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 6/24/2011 End Date: X3-OOXTY-C(4,681,752.11 ) Project:Prudhoe Bay Site:PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:30 - 21:00 0.50 DRILL N DPRB 13,246.00 PROD1 OPEN WELL COMMANDER CIRCULATION SUB WITH BIT IN OPEN HOLE. -DROP 1.76"BALL AND PUMP DOWN TO WELL COMMANDER SUB AT 80 GPM,450 PSI. PUMP 35 BBLS TO PUSH BALL TO WELL COMMANDER SUB(CALCULATED VOL TO SUB= 106 BBLS). PRESSURE UP TO 2050 PSI TO OPEN CIRCULATION PORTS. -RACK ONE STAND BACK TO PULL DRILLSTRING UP 100%INTO CASING. 21:00 - 00:00 3.00 DRILL N DPRB 13,246.00 PROD1 CIRCULATE OVER TOP OF WELL WITH HOLE PUMP&MONITOR WELL. MEASURE STATIC LOSS RATE. -DRILLSTRING INSIDE 7"LINER. -STATIC LOSS RATE ESTIMATED TO BE APPROX.60 BPH. -BUILD 80 BBLS PUMPABLE 35 PPG MI-SWACO FORM-A-BLOK LCM PILL IN MUD PITS. NOTE: TOTAL 8.5 PPG FLOPRO MUD LOST TO WELL IN PAST 24 HOURS=620 BBLS TOTAL 8.5 PPG FLOPRO LOST IN 6-1/8"HOLE SECTION=640 BBLS 7/18/2011 00:00 - 01:00 1.00 DRILL N DPRB 13,246.00 PROD1 MONITOR WELL,MEASURING LOSS RATES TO THIEF ZONE @ 13200'MD. -BUILD 80 BBLS PUMPABLE 35 PPG MI-SWACO FORM-A-BLOK LCM PILL IN MUD PITS. -HOLD PRE-JOB SAFETY MEETING WITH RIG CREW TO DISCUSS HESITATION SQUEEZE PROCEDURE. -TAKE SLOW PUMP RATES. REMOVE SUCTION AND DISCHARGE SCREENS FORM MP#1 &MP#2 -TOP OFF ACTIVE PIT SYSTEM WITH 8.6 PPG FLOPRO. Printed 9/6/2011 1:18:30PM 3 t ftf� 10440-1W,*,` ` Operation SummaryRep ott Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:00 - 04:00 3.00 DRILL N DPRB 13,246.00 PROD1 PERFORM HESITATION SQUEEZE TO COMBAT LOSSES TO WELLBORE THIEF 7ONF©13200'MD. r/ -RIGUP PRESSURE RECORDER(SEE ATTACHED CHART). MONITOR PRESSURE ON IA PRESSURE GAUGE TO DISREGARD PUMP/SURFACE LINE FRICTION PRESSURE. -PUMP 80 BBLS OF 35 PPB FORM-A-BLOK LCM PILL DOWN DRILLPIPE,MEASURED BY MANUAL STRAP ON MUD PIT. -PUMP @ 3 BPM,450-485 PSI PUMP PRESSURE. -FOLLOW PILL WITH 30 BBLS OF 8.6 PPG FLOPRO(7 BBLS FOR SURFACE LINES+23 BBLS TO FILL DRILLSTRING&PUSH PILL TO CIRC SUB). -CLOSE ANNULAR PREVENTER TO BEGIN SQUEEZING FLUIDS INTO THIEF ZONE. -PUMP 109 BBLS TO PUSH LEADING TIP OF PILL TO THIEF ZONE @ 13200'MD. -INITIAL CIRC PRESSURE @ 2 BPM=400 PSI. -PRESSURE GRADUALLY INCREASED TO 900 PSI. PUMP RATE WAS DECREASED SEVERAL TIMES IN STAGES FROM 2 BPM TO 0.5 BPM.TO STAY UNDER 900 PSI CEILING (10.6 PPG EMW AT 8911'TVD 7"LNR SHOE). -PUMP 18 BBLS FORM-A-BLOK PILL @ 0.5 BPM,900 PSI INTO FORMATION UNTIL PRESSURE BEGAN TO CLIMB OVER 900 PSI. SHUT DOWN PUMP AND MONITOR BLEED OFF. -PRESSURE LEAKOFF FROM 900 PSI TO 0 PSI IN 25 MIN(36 PSVMIN). 04:00 - 04:30 0.50 DRILL N DPRB 13,246.00 PROD1 MONITOR WELL AND MEASURE LOSS RATES. -OPEN ANNULAR PREVENTER -PICKUP ON DRILLSTRING TO ENSURE PIPE IS FREE IN CASING. -CIRCULATE DOWN DRILLPIPE AT 2 BPM,460 PSI TO ENSURE STRING AND BHA ARE CLEAR OF FORM-A-BLOK PILL. MONITOR WELL FOR LOSSES WHILE CIRCULATING. -STATIC LOSS RATE HAS IMPROVED TO 8 BBL PER HOUR. 2 BBLS LOST TO WELLBORE WHILE CIRCULATING(ADDING TO LCM PILL TOTAL IN FORMATION). Printed 9/6/2011 1:18:30PM ,o s5. _ iuuj E .. U Operation Summary`Report � Common Well Name: 13-27 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.:NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 08:00 3.50 DRILL N DPRB 13,246.00 PROD1 CONTINUE HESITATION SQUEEZE TO COMBAT LOSSES TO WELLBORE THIEF ZONE @ 13200'MD. -CLOSE ANNULAR PREVENTER. PUMP @ 0.5 -1 BPM. -PUMP 3.5 BBLS TO REACH 900 PSI. ALLOW PRESSURE TO LEAKOFF TO 385 IN 10 MIN(51 PSI/MIN) -PUMP 2.5 BBLS TO REACH 900 PSI. ALLOW PRESSURE TO LEAKOFF TO 435 PSI 10 MIN(47 PSVMIN) -PUMP 1.8 BBLS TO REACH 900 PSI. ALLOW PRESSURE TO LEAKOFF TO 475 PSI IN 11 MIN(38 PSVMIN) -PUMP 1.2 BBLS TO REACH 900 PSI. ALLOW PRESSURE TO LEAKOFF TO ZERO IN 60 MIN(15 PSVMIN) -PUMP 3.6 BBLS TO REACH 700 PSI. ALLOW PRESSURE TO LEAKOFF TO 333 PSI J IN 10 MIN(37 PSVMIN) -PUMP 1.1 BBLS TO REACH 700 PSI. ALLOW PRESSURE TO LEAKOFF TO 350 PSI IN 10 MIN(35 PSVMIN) -PUMP 1 BBL TO REACH 700 PSI. ALLOW PRESSURE TO LEAKOFF TO ZERO PSI IN 60 MIN(12 PSVMIN) -PRESSURE LEAKOFFS TO FORMATION APPEAR TO BE CONSISTENT OR SLIGHTLY IMPROVING. -SQUEEZES PUMPED 15 ADDITIONAL BBLS OF PILL INTO THIEF ZONE FOR A TOTAL OF 35 BBLS OF PILL AWAY INTO THIEF ZONE. -45 BBLS PILL STILL PRESENT IN OPENHOLE,1235'IN 6-1/8"HOLE 08:00 - 08:30 0.50 DRILL N DPRB 13,246.00 PROD1 OPEN ANNULAR PREVENTER AND VISUALLY MONITOR WELL -FLUID LEVEL DROPPING SLOWLY. -DISCUSS PLAN FORWARD WITH ANCHORAGE TEAM. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 51 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. J UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 10:30 2.00 DRILL N DPRB 13,246.00 PROD1 CONTINUE HESITATION SQUEEZE TO COMBAT LOSSES TO WELLBORE THIEF ZONE @ 13200'MD. -CLOSE ANNULAR PREVENTER. PUMP @ 1/4 -0.5 BPM. -PUMP 7.2 BBLS TO REACH 1300 PSI. ALLOW PRESSURE TO LEAKOFF TO 713 PSI IN 10 MIN(70 PSVMIN) -PUMP 2.8 BBLS TO REACH 1300 PSI. ALLOW PRESSURE TO LEAKOFF TO 766 PSI IN 10 MIN(53 PSVMIN) -PUMP 2.1 BBLS TO REACH 1300 PSI. ALLOW PRESSURE TO LEAKOFF TO 810 PSI IN 10 MIN(49 PSVMIN) -PUMP 1.9 BBLS TO REACH 1300 PSI. ALLOW PRESSURE TO LEAKOFF TO 798 PSI IN 10 MIN(50 PSVMIN) -BLEED OFF REMAINING 750 PSI AT SURFACE, RECOVERED—3 BBLS. -1300 PSI SURFACE PRESSURE=11.4 PPG EMW AT 8911'TVD 7"LNR SHOE WITH 8.6 PPG MUD IN HOLE. -PRESSURE LEAKOFFS TO FORMATION APPEAR TO BE CONSISTENT OR SLIGHTLY IMPROVING. -SQUEEZES PUMPED 11 ADDITIONAL BBLS OF PILL INTO THIEF ZONE FOR A TOTAL OF 46 BBLS OF PILL AWAY INTO THIEF ZONE. -34 BBLS PILL STILL PRESENT IN OPENHOLE,933'IN 6-1/8"HOLE. 10:30 - 11:30 1.00 DRILL N DPRB 13,246.00 PROD1 OPEN ANNULAR PREVENTER, FILL HOLE, MONITOR WELL,&MEASURE LOSSES. -STATIC LOSS RATE ESTABLISHED @ 4 BPH. 11:30 - 13:30 2.00 DRILL N DPRB 13,246.00 PROD1 CIRCULATE DOWN DRILLPIPE AND MEASURE LOSSES. -PUMP @ 250 GPM,790 PSI, RECIPROCATE FULL STAND DRILLPIPE. -DYNAMIC LOSS RATE ESTABLISHED @ 6 BPH. -DECISION MADE TO RUN BACK IN HOLE TO PREVIOUSLY DRILLED DEPTH OF 13246'MD. 13:30 - 14:30 1.00 DRILL N DPRB 13,246.00 PROD1 CLOSE WELL COMMANDER CIRCULATION SUB WITH BIT IN OPEN HOLE. -DROP 1.76"BALL AND PUMP DOWN TO WELL COMMANDER SUB AT 80 GPM,428 PSI. PUMP 27 BBLS TO PUSH BALL TO WELL COMMANDER SUB(CALCULATED VOL TO SUB= 106 BBLS). PRESSURE UP TO 2250 PSI TO CLOSE CIRCULATION PORTS. -INSTALL SUCTION&DISCHARGE SCREEN ON MUD PUMPS. 14:30 - 16:00 1.50 DRILL N DPRB 13,246.00 PROD1 INSTALL NEW GRIPPER DIES ON TOP DRIVE Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 52 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:00 - 17:30 1.50 DRILL N DPRB 13,246.00 PROD1 TIH F/7"LINER SHOE @ 10286'MD'T/TIGHT SPOT @ 12600'. UNABLE TO WORK DOWN THROUGH. MAKEUP TO TOP DRIVE TO WORK THROUGH. -BROKE CIRCULATION ONCE AT 12343'MD (78'BELOW FAULT#3 ON WELL PLAN @ 12265'). PUMPED 70 BBLS AND MEASURE LOSSES. DYNAMIC LOSS RATE ESTABLISHED AT 10 BPH. -PU WEIGHT= 187 KLBS,SO WEIGHT= 115 KLBS,ROT WEIGHT= 142 KLBS. 17:30 - 00:00 6.50 DRILL N DPRB 13,246.00 PROD1 WASH AND REAM(CLEANOUT)WELLBORE F/ 12600'MD T/12620'AT MIDNIGHT. -WORK TWO STANDS OF DRILLPIPE F/12431' T/12620'. WELLBORE PACKING OFF WHILE CIRCULATING. DIFFICULT TO BACKREAM- LIMITED BY TORQUE AND PUMP PRESSURE. MAX TORQUE OBSERVED=12+KFT-LBS, MAX PUMP PRESSURE OBSERVED=3300 PSI. -BASELINE CLEANOUT PARAMATERS WHILE WORKING PIPE DOWN: 250 GPM,1650-1750 PSI,40-80 RPM,6.5-8 KFT-LBS TORQUE,5 KLBS WOB. -FIRST BOTTOMS UP CIRCULATION RETURNED SIGNIFICANT AMOUNT OF FORM-A-BLOK PILL. PILL COVERED SHAKERS,—100 BBLS MUD LOST OVERBOARD DUE TO SCREEN BLINDING. -SIGNIFICANT VOLUME OF SAND RETURNED OVER SHAKERS DURING SUBSEQUENT CIRCULATING. NO ADDITIONAL FORM-A-BLOK PILL OBSERVED IN RETURNS. -DYNAMIC FLUID LOSS RATE ELEVATED TO 80 BPH WHILE PACKING OFF DURING CIRCULATION. DYNAMIC LOSS RATE WHEN CIRCULATION PRESSURE STABLIZED=30 BPH. -INCREASED TOP DRIVE ROTATION SPEED TO 100 RPM AND OBSERVED BETTER RESULTS WORKING PIPE DOWN. TORQUE AND PRESSURE ISSUES GRADUALLY SUBSIDED. ABLE TO WASH AND REAM PIPE DOWN TO 12620'MD SLOWLY. LARGE AMOUNT OF SAND RETURNS STILL AT SHAKERS. -DYNAMIC LOSSES TO WELLBORE WHILE WASHING AND REAMING WITH NO PACKING OFF ESTIMATED AT 50 BPH. NOTE: TOTAL 8.5 PPG FLOPRO LOSSES TO WELLBORE IN PAST 24 HOURS=406 BBLS. 7/19/2011 00:00 - 01:00 1.00 DRILL N DPRB 13,246.00 PROD1 CONTINUE TO WORK THROUGH TIGHT SPOT 12600'MD-12620'MD. -BASELINE CLEANOUT PARAMATERS WHILE WORKING PIPE DOWN: 250 GPM,1650-1750 PSI,40-80 RPM,6.5-8 KFT-LBS TORQUE,5 KLBS WOB -WELLBORE PACKING OFF. Printed 9/6/2011 1:18:30PM 3rth America -ALASKA- BP Page 53 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:00 - 09:30 8.50 DRILL N DPRB 13,246.00 PROD1 WASH AND REAM(CLEANOUT)WELLBORE FROM 12620'MD TO 13154'MD(PREVIOUSLY DRILLED DEPTH= 13246'MD) -WORK PIPE DOWN SLOWLY TO AVOID PACKING OFF. -250 GPM,1800-2000 PSI ON BTM,1700-1800 PSI OFF BTM,100 RPM(183 DOWNHOLE RPM) -6.5-7.5 KFT-LBS TORQUE ON BTM,6 KFT-LBS TORQUE OFF BTM,5-10 KLBS WOB -AVERAGE CLEANOUT RATE WITH CONNECTIONS=63 FPH. -DYNAMIC LOSS RATE ESTABLISHED AT 50 BPH. STATIC LOSS RATE MEASURED AT 6 BPH. -CONSISTENT SAND OBSERVED IN RETURNS OVER SHAKERS. -MWD SURVEYS NOTICED TO DEFINITIVELY BEGIN DEPARTING FROM ORIGINAL DRILLING SURVEYS WHILE WASHING/REAMING AT 13154'MD. PU OFF BOTTOM TO EVALUATE. 09:30 - 13:30 4.00 DRILL N DPRB PROD1 CONSULT WITH ANCHORAGE TEAM TO Jl DISCUSS PLAN FORWARD AFTER J UNINTENTIONALLY DEPARTING FROM -7 ORIGINAL WELLBORE. -CIRCULATE AND CONDITION HOLE. RECIPROCATE 1/2 STAND. -240 GPM,1650-1750 PSI OFF BTM,100 RPM (183 DOWNHOLE RPM) e -DYNAMIC LOSS RATE=25 BPH. e -TAKE SLOW PUMP RATES @ 10:40, 13100' MD,9033'TVD,8.6 PPG MW -BOTH PUMPS;2 BPM=620 PSI,3 BPM= 810 PSI -KOP OF SIDETRACK ESTIMATED TO BE 12658'MD -AT 13246'MD(PREVEIOUSLY DRILLED TOTAL DEPTH OF ORIGINAL HOLE),NEW WELLBORE IS 25'LEFT AND 2'HIGH. -SIDETRACK STILL IN DIRECTIONAL PLAN DRILLER'S POLYGON. -DECISION MADE TO DRILL AHEAD. MONITOR WELL FOR LOSSES AND PERFORM DIRECTIONAL WORK TO GET BACK ON PLAN. Printed 9/6/2011 1:18:30PM 'rth America -ALASKA- BP Page 54 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:30 - 21:30 8.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/13154' MD T/13465'MD(HORIZONTAL SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 9.8 PPG. -5-15 KLBS WOB ROTATING,20-30 KLBS WOB SLIDING,1800-2000 PSI ON BTM CIRC PRESSURE,1600-1750 PSI OFF BOTTOM CIRC PRESSURE, -250 GPM;SURFACE RPM=40-80, BIT RPM= 120-160,TORQUE=8-9 KFT-LBS ON BTM, 6-6.5 KFT-LBS OFF BTM -AVERAGE ROP WITH CONNECTIONS=39 FPH. -MW IN=MW OUT=8.6 PPG,44 SEC/QT -DYNAMIC LOSSES TO WELLBORE=10-20 BPH. -TAKE SLOW PUMP RATES @ 22:00, 13462' MD,9038'TVD,8.6 PPG MW -MP#1: 2 BPM=640 PSI,3 BPM=820 PSI MP#2: 2 BPM=640 PSI,3 BPM=800 PSI ACTUAL DRILLING TIME FOR PAST 24 HOURS =8.26 HRS AST=2.02 HRS,ART=6.24 HRS 21:30 - 00:00 2.50 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/13465' MD T/13493'MD. -ATTEMPT TO SLIDE AND ACHIEVE 6 DEG/100'DOGLEGS FOR DIRECTIONAL WORK. DIFFICULT TO GET EFFECTIVE WEIGHT TRANSFER TO BIT. / 7/20/2011 00:00 - 01:00 1.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/13493' MD T/13513'. -DIFFICULT TO SLIDE DRILL. -250 GPM,1800 PSI SLIDING ON BTM. 01:00 - 03:00 2.00 DRILL P PROD1 CIRCULATE HOLE CLEAN. -RACK BACK ONE STAND TO RECIPROCATE FULL STAND WHILE CIRCULATING -PUMP 35 BBL HI-VIS(100 SEC/QT)SWEEP AROUND;250 GPM,1750 PSI,100 RPM,FULL RETURNS -NO MAJOR CUTTINGS OBSERVED AT SHAKERS DURING CIRCULATION. -DYNAMIC LOSSES TO WELLBORE=<5 BPH. 03:00 - 08:30 5.50 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/13513' MD T/13750'MD(HORIZONTAL SECTION). -5-15 KLBS WOB ROTATING,20-50 KLBS WOB SLIDING, PUMP PRESSURE(ON/OFF BTM)=1950-2050/1650-1750 PSI -250 GPM; SURFACE RPM=40-80, BIT RPM= 120-160,TORQUE(ON/OFF BTM)=8-9/7 KFT-LBS -AVERAGE ROP WITH CONNECTIONS=43 FPH. -MW IN=MW OUT=8.6 PPG,45 SEC/QT -DYNAMIC LOSSES TO WELLBORE ESTIMATED AT 10-15 BPH. SLIDE DRILLING IMPROVED AFTER CLEANING UP HOLE. Printed 9/6/2011 1:18:30PM '3rth America -ALASKA- BP Page 55 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date I From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 09:00 0.50 DRILL P PROD1 PERFORM 7 DAY AOGCC FUNCTION TEST OF BOP STACK. -RACK BACK ONE STAND T/13657'MD AND SPACE OUT DRILLPIPE FOR RAM FUNCTIONING. ZOf -CLOSE AND OPEN ANNULAR PREVENTER, ! rc• UPPER 3-1/2"X 6"RAMS&LOWER 2-7/8"X 5" j' RAMS. -BLIND/SHEAR RAMS WILL BE FUNCTION TESTED ON NEXT TOH. -RUN BACK IN HOLE T/13750'TO RESUME DRILLING. 09:00 - 14:00 5.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/13861' MD T/13914'MD(HORIZONTAL SECTION). -5-15 KLBS WOB ROTATING,20-50 KLBS WOB SLIDING, PUMP PRESSURE(ON/OFF BTM)=1850-1900/1650 PSI -250 GPM;SURFACE RPM=0-40, BIT RPM= 80-120,TORQUE(ON/OFF BTM)=7/6 KFT-LBS -AVERAGE ROP WITH CONNECTIONS= 11 FPH. -MW IN=MW OUT=8.6 PPG,50 SEC/QT -DYNAMIC LOSSES TO WELLBORE=15-20 BPH. -TAKE SLOW PUMP RATES @ 11:00, 13839' MD,9040'TVD,8.6 PPG MW -MP#1 &MP#2: 2 BPM=660 PSI,3 BPM= 840 PSI 14:00 - 18:00 4.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/13914' MD T/13932'MD(HORIZONTAL SECTION). -250 GPM,1750 PSI ON BTM,83 BIT RPM, 20-50 KLBS WOB -AVERAGE ROP WITH CONNECTIONS=5 FPH. -MW IN=MW OUT=8.6 PPG,44 SEC/QT -DYNAMIC LOSSES TO WELLBORE MEASURED AT 10-30 BPH. ADD 5 PPB LOST CIRCULATION MATERIAL UNTIL LOSSES SETTLE OUT TO 10 BPH. PRIMARILY ATTEMPTING TO SLIDE TO DROP ANGLE. TOE OF WELL TIPPED UP INTO SHUBLIK FORMATION. Printed 9/6/2011 1:18:30PM 'orth America -ALASKA- BP Page 56 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 • Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 00:00 6.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/13932' MD T/14032'MD(HORIZONTAL SECTION). -EQUIVALENT CIRCULATING DENSITY ESTIMATED TO BE 10.1 PPG AT TD. -5-15 KLBS WOB ROTATING,10-70 KLBS WOB SLIDING, PUMP PRESSURE(ON/OFF BTM)=1900-2000/1600-1700 PSI -250 GPM; SURFACE RPM=40-100, BIT RPM = 120-180,TORQUE(ON/OFF BTM)=7.5/7 KFT-LBS -AVERAGE ROP WITH CONNECTIONS= 17 FPH. -MW IN=MW OUT=8.6 PPG,48 SEC/OT -DYNAMIC LOSSES TO WELLBORE MEASURED AT 10 BPH. -PU/SO/ROT WEIGHTS= 193/115/140 KLBS -TAKE SLOW PUMP RATES @ 19:00, 13932' MD,9039'TVD,8.6 PPG MW -MP#1: 2 BPM=750 PSI,3 BPM=920 PSI MP#2: 2 BPM=750 PSI,3 BPM=940 PSI 22:05-22:20: WHILE DRILLING AHEAD AT 14014'MD(NEAR PROGNOSED DEPTH FOR FAULT#5 IN PLAN),TOOK 5 BBL PIT GAIN OVER 15 MIN PERIOD WITH NO CORRESPONDING INCREASE IN FLOW. -STOP DRILLING,PICK UP OFF BOTTOM AND FLOW CHECK WELL. FLUID LEVEL DROPPING. -PUMP 290 BBLS(2/3)OF ANNULUS VOLUME AND FLOW CHECK WELL AGAIN. FLUID LEVEL DROPPING. RETURN TO DRILLING. -35 BBLS FLUID LOST TO WELL IN FIRST 20 MINUTES AFTER RESTARTING PUMP. LOSSES THEN REDUCED TO—10 BPH WHILE CONTINUING TO DRILL AHEAD. ACTUAL DRILLING TIME FOR PAST 24 HOURS =8.81 HRS AST=7.73 HRS,ART=1.08 HRS 7/21/2011 00:00 - 02:30 2.50 DRILL P PROD1 CIRCULATE HOLE CLEAN. -PUMP 40 BBL HI-VIS(170 SEC/QT)SWEEP AROUND;250 GPM,1850 PSI,100 RPM, FULL RETURNS -INCREASE IN ANGULAR SHALE CUTTINGS OBSERVED AT SHAKERS DURING CIRCULATION. -DYNAMIC LOSSES TO WELLBORE=10 BPH 02:30 - 06:00 3.50 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/14032' MD T/14095'MD(HORIZONTAL SECTION). -SLIDE DRILLING TO TURN LEFT AND DROP BELOW SHUBLIK FORMATION. -10-70 KLBS WOB SLIDING, PUMP PRESSURE (ON BTM)=1900-2050 PSI -250 GPM; BIT RPM=83 WHILE SLIDING -AVERAGE ROP WITH CONNECTIONS= 18 FPH. -MW IN=MW OUT=8.6 PPG,44 SEC/QT -DYNAMIC LOSSES TO WELLBORE= 10 BPH. Printed 9/6/2011 1:18:30PM Orth America -ALASKA- BP Page 57 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:00 - 18:00 12.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/14095' MD T/14223'MD(HORIZONTAL SECTION). -SLIDE DRILLING TO TURN LEFT AND DROP BELOW SHUBLIK FORMATION. -10-70 KLBS WOB SLIDING,PUMP PRESSURE (ON/OFF BTM)=2150/1950 PSI -250 GPM; BIT RPM=83 WHILE SLIDING -AVERAGE ROP WITH CONNECTIONS=11 FPH. -MW IN=MW OUT=8.6 PPG,46 SEC/QT -DYNAMIC LOSSES TO WELLBORE= 10 BPH. -TAKE SLOW PUMP RATES @ 9:00, 14127' MD,9046'TVD,8.6 PPG MW -MP#1: 2 BPM=750 PSI,3 BPM=950PS1 -MP#2: 2 BPM=780 PSI,3 BPM=940 PSI 18:00 - 00:00 6.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/14223' MD T/14474'MD(HORIZONTAL SECTION). -10-70 KLBS WOB SLIDING,5-17 KLBS WOB ROTATING. PUMP PRESSURE(ON/OFF BTM) =2150-2200/1900 PSI -PUMP 3 40 BBL 10 PPB MEDIUM NUT PLUG SWEEPS TO BETTER SLIDE DRILL. SWEEPS VERY EFFECTIVE. 250 GPM; BIT RPM=83 SLIDING,123-183 ROTATING,TORQUE(ON/OFF BTM)=9-9.5/7-8 KFT-LBS -AVERAGE ROP WITH CONNECTIONS=42 FPH. -MW IN=MW OUT=8.6 PPG,47 SEC/QT -DYNAMIC LOSSES TO WELLBORE=10-20 BPH. -PU/SO/ROT WEIGHTS=200/118/140 KLBS -TAKE SLOW PUMP RATES @ 21:00, 14312' MD,9057'TVD,8.6 PPG MW -MP#1: 2 BPM=820 PSI,3 BPM=1040PSI -MP#2: 2 BPM=840 PSI,3 BPM=1060 PSI DROPPED BELOW SHUBLIK&RE-ENTERED IVISHAK FORMATION @ 14244'MD. ACTUAL DRILLING TIME FOR PAST 24 HOURS =7.57 HRS AST=7.23 HRS,ART=0.34 HRS Printed 9/6/2011 1:18:30PM lrth America -ALASKA- BP Page 58 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task 1 Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/22/2011 00:00 - 08:00 8.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/14474' ^ MD T/14955'MD,9062'TVD(TOTAL DEPTH). ,i"9 -PRIMARILY ROTATE TO TD(GEOSTEERING), SLIDE FOR MINOR DIRECTIONAL CORRECTIONS. -PUMP(1)40 BBL 10 PPB MEDIUM NUT PLUG SWEEP TO BETTER SLIDE DRILL. SWEEP VERY EFFECTIVE. -5-18 KLBS WOB ROTATING. PUMP PRESSURE(ON/OFF BTM)=2260/2110 PSI -250 GPM;100 RPM, BIT RPM=183,TORQUE (ON/OFF BTM)=9.4/6.6 KFT-LBS -AVERAGE ROP WITH CONNECTIONS=60 FPH. • -MW IN=MW OUT=8.6 PPG,44 SEC/QT -DYNAMIC LOSSES TO WELLBORE= 10-20 BPH. -TAKE SLOW PUMP RATES @ 08:00, 14955' MD,9062'TVD,8.6 PPG MW -MP#1: 2 BPM=820 PSI,3 BPM=1020PS1 -MP#2: 2 BPM=840 PSI,3 BPM=1040 PSI ACTUAL DRILLING TIME FOR 8 HOURS=4.44 HRS AST=0.61 HRS,ART=3.83 HRS 08:00 - 11:00 3.00 DRILL P PROD1 CIRCULATE AND CONDITION HOLE FOR TRIPPING. -PUMP 40 BBL 10 PPB NUT PLUG SWEEP AND CIRCULATE 2 BTMS UP. -100 RPM,7KFT-LBS TORQUE,2000 PSI,250 GPM. -NO MAJOR CUTTINGS RETURNED OVER SHAKERS 11:00 - 15:00 4.00 DRILL P PROD1 POOH F/14955'MDT/13260'MD ON ELEVATORS. -INITIAL PU/SO/ROT WEIGHTS=200/115/138 KLBS. -CHECK WELL FOR FLOW FOR TEN MIN PRIOR TO PULLING OFF BTM. FLUID LEVEL DROPPING(15-20 BPH LOSSES). -ENCOUNTER TIGHT SPOTS F/13841'T/ 13747'MD&F/13653'T/13559'MD. MU TOP DRIVE AND BACKREAM SLOWLY. 15:00 - 21:00 6.00 DRILL P PROD1 MAD PASS LOG F/13260'MD T/12600'. -180 FPH,250 GPM,1710 PSI,85 RPM,6 KFT-LBS TORQUE. 21:00 - 00:00 3.00 DRILL N DPRB 12,600.00 PROD1 BACKREAM THROUGH TIGHT HOLE F/12600' MD T/12540'AT MIDNIGHT. -ATTEMPT TO MAD PASS LOG F/12600'T/ 12500'WHEN WELL BEGINS TO PACKOFF. -BACKREAM VERY SLOWLY TO AVOID PACKING OFF. -215 GPM,100 SURFACE RPM,183 BIT RPM, PUMP PRESSURE= 1550-1750,SPIKES TO 2300 PSI.,TORQUE=6-11 KFT-LBS,SEVERAL TOP DRIVE STALLS. NOTE: TIGHT HOLE IS AROUND APPROXIMATE DEPTH OF UNINTENTIONAL SIDETRACK DURING DRILLING. Printed 9/6/2011 1:18:30PM )rth America -ALASKA- BP Page 59 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/23/2011 00:00 - 01:00 1.00 DRILL N DPRB 12,600.00 PROD1 CONTINUE TO BACKREAM THROUGH TIGHT HOLE F/12540'MD AT MIDNIGHT T/12525'. DRILLSTRING BEGINS TO PULL FREE AND PACKOFF ISSUES SUBSIDE. STRAIGHT PULL ONE MORE STAND T/12434'MD WITH NO ISSUES. NOTE: TIGHT HOLE IS AROUND APPROXIMATE DEPTH OF UNINTENTIONAL SIDETRACK DURING DRILLING. 01:00 - 05:00 4.00 DRILL N DPRB 12,600.00 PROD1 RIH TO CONFIRM ABILITY TO RE-ENTER SIDETRACK. -RUN IN HOLE F/12434'MD T/12600'MD AND TAG HARD BOTTOM. UNABLE TO WORK PIPE PAST. -ORIENT MUD MOTOR BEND TO 270 DEG (STRAIGHT LEFT)AND ATTEMPT TO GO DOWN. UNABLE TO MAKF PROGRESS PAST ,12600'MD.. -ROTATE PIPE AT 60 RPM AND PUMP AT 100 GPM. PROGRESS PIPE DOWN F/12600'T/ 12620'MD. -CONTINUE TO WORK PIPE DOWN AT 60 RPM,100 GPM,750 PSI F/12620'-12640'MD. VERY DIFFICULT TO MAKE PROGRESS IN HOLE. -ROTATE PIPE AT 100 RPM,250 GPM. CONTINUE TO WORK PIPE DOWN F/12640' MD T/12650'MD. ✓ 05:00 - 07:00 2.00 DRILL N DPRB 12,600.00 PROD1 POOH F/12650'MD T/12450'MD AND CIRCULATE HOLE. -RECIPROCATE FULL STAND. 100 GPM,720 PSI,40 RPM,6 KFT-LBS TORQUE, LOSSES TO WELLBORE= 10 BPH. -CONSULT ANCHORAGE TEAM ON PLAN FORWARD. DECISION MADE TO ABANDON WELLBORE F/10683'MD T/14955'MD. ,. PERFORM NEW OPENHOLE SIDETRACK. 07:00 - 09:00 2.00 DRILL N DPRB 12,600.00 PROD1 POOH F/12450'MD T/10120'MD ON ELEVATORS(INSIDE 7"LINER SHOE @ 10286' MD) -INITIAL PU/SO/ROT WEIGHTS= 180/125/140 KLBS -ENCOUNTER TWO TIGHT SPOTS @ 12230' MD&12400'MD. ABLE TO WORK PIPE DOWN PULL BACK THROUGH WITH NO ISSUES. 09:00 - 10:30 1.50 DRILL N DPRB 12,600.00 PROD1 SLIP AND CUT 15 WRAPS, 102'DRILL LINE 10:30 - 11:00 0.50 DRILL N DPRB 12,600.00 PROD1 SERVICE DRAWWORKS,TOP DRIVE AND CROWN. 11:00 - 14:00 3.00 DRILL N DPRB 12,600.00 PROD1 CHANGEOUT TOP DRIVE WASH PIPE. -STATIC FLUID LOSS RATE TO WELLBORE MEASURED TO BE 8 BPH. -TAKE SLOW PUMP RATES @ 13:45, 10176' MD,8815'TVD,8.6 PPG MW -MP#1: 2 BPM=540 PSI,3 BPM=670 PSI -MP#2: 2 BPM=550 PSI,3 BPM=670 PSI Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 60 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:00 - 14:30 0.50 DRILL N DPRB 12,600.00 PROD1 TRIP IN HOLE F/10120'MD T/10683'MD WITH -KOP FOR NEW SIDETRACK KICKOFF. DIRECTIONAL PLAN CALLS FOR KICKING OFF FORM MAIN WELLBORE LOWSIDE AND TO THE RIGHT. r 14:30 - 00:00 9.50 DRILL N DPRB 12,600.00 PROD1 PERFORM OPENHOLE SIDETRACK FROM MAIN 13-27B WELLBORE F/10683'MD T/ 10709'MD AT MIDNIGHT. -TIME SLIDE DRILL ON LOWSIDE OF HOLE. ,/ BEGIN @ 1 FT/30 MIN. INCREASE ROP T/1 S� FT/20 MIN. -15 KLBS WOB,246 GPM,1420 PSI,0-20 PSI DIFFERENTIAL PRESSURE -TAKE SLOW PUMP RATES @ 14:30, 10675' MD,9047'TVD,8.6 PPG MW -MP#1: 2BPM=570PSI,3BPM=730PSI -MP#2: 2 BPM=570 PSI,3 BPM=720 PSI ACTUAL DRILLING TIME FOR 9.5 HOURS= 8.15 HRS AST=8.15 HRS,ART=0 HRS 7/24/2011 00:00 - 02:00 2.00 DRILL N DPRB 12,600.00 PROD1 CONTINUE OPENHOLE SIDETRACK FROM MAIN 13-27B WELLBORE F/10709'MD @ MIDNIGHT T/10720'MD -TIME SLIDE DRILL @ 1 FT/20 MIN ON LOWSIDE OF HOLE. -15 KLBS WOB,246 GPM,1420 PSI,0-20 PSI DIFFERENTIAL PRESSURE 02:00 - 04:45 2.75 DRILL N DPRB 12,600.00 PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/10720' MD T/10815'MD. -SLIDE DRILL TO CONTINUE LOWSIDE SIDETRACK AND TURN RIGHT AWAY FROM MAIN WELLBORE. -MONITOR INCLINATION AT BIT TO CONFIRM DEPARTURE FROM MAIN WELLBORE. ORIGINAL WELLBORE AT SIDETRACK DEPTH=95 DEG. NEW WELLBORE AT SIDETRACK DEPTH=92 DEG -240 GPM,83 BIT RPM,10-20 KLBS WOB, 1500 PSI. Printed 9/6/2011 1:18:30PM )rth America -ALASKA- BP Page 61 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM 1 Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:45 - 05:15 0.50 DRILL N DPRB 12,600.00 PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/10815' MD T/10835'MD. -ROTATE DRILL AFTER CONFIRMED DEPARTURE FROM MAIN WELLBORE. -CONTINUE TO TURN RIGHT AND BUILD INCLINATION TO 98 DEG PER NEW DIRECTIONAL PLAN. -CENTER TO CENTER DEPARTURE FROM MAIN WELLBORE @ 10835'MD BIT PROJECTION=23'. -240 GPM,80 RPM,163 BIT RPM,1650 PSI,6 KFT-LBS TORQUE,10-15 KLBS WOB. -DYNAMIC LOSSES TO WELLBORE=5-10 BPH. -TAKE SLOW PUMP RATES @ 05:00, 10835' MD, 9036'TVD,8.5 PPG MW -MP#1: 2 BPM=580 PSI,3 BPM=740 PSI -MP#2: 2 BPM=540 PSI,3 BPM=680 PSI ACTUAL DRILLING TIME FOR 5.25 HOURS= 5.05 HRS AST=4.59 HRS,ART=0.46 HRS 05:15 - 07:30 2.25 DRILL N DPRB 12,600.00 PROD1 CIRCULATE AND CONDITION HOLE FOR TRIPPING PUMP 2 BTMS UP @ 250 GPM,1620 PSI. NO MAJOR CUTTINGS RETURNED ACROSS SHAKERS. 07:30 - 08:00 0.50 DRILL N DPRB 12,600.00 PROD1 SHORT TRIP TO CONFIRM ABILITY TO RE-ENTER NEW SIDETRACK -POOH ON ELEVATORS F/10835'MD T/ 10646'M(37'ABOVE SIDETRACK DEPTH @ 10683'MD). -RUN BACK IN HOLE T/10835'MD WITH NO ISSUES RE-ENTERING SIDETRACK. 08:00 - 13:30 5.50 DRILL N DPRB 12,600.00 PROD1 POOH F/10835'MD T/BHA @ 200'. -FLOW CHECK WELL PRIOR TO PULLING OFF BTM. FLUID LEVEL DROPPING. STATIC LOSS RATE=7 BPH. -INITIAL PU/SO WEIGHTS=180/125 KLBS -FLOW CHECK WELL PRIOR TO ENTERING 7" LINER SHOE. WELL STABLE. PUMP DRY JOB &CONTINUE OUT OF HOLE. -FLOW CHECK WELL PRIOR TO BHA ENTERING BOP STACK. WELL STABLE. 13:30 - 15:30 2.00 DRILL N DPRB 12,600.00 PROD1 LAYDOWN 6-1/8"DIRECTIONAL BHA. -CLOSE BLIND RAMS(FUNCTION TEST TO CONCLUDE 7/20/2011 7 DAY AOGCC FUNCTION TEST REQUIREMENTS). -6-1/8"HYCALOG PDC FOUND TO HAVE WEAR ON INSIDE CUTTERS AND SOME WEAR ON ONE BLADE(SEE ATTACHED PICTURES. -CLEAR RIG FLOOR AFTER TRIPPING. 15:30 - 17:00 1.50 BOPSUR N DPRB 12,600.00 PROD1 RIG UP FOR BOPE TESTING. -PULL WEAR BUSHING AND INSTALL TEST PLUG. Printed 9/6/2011 1:18:30PM firth America -ALASKA- BP Page 62 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27©83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:00 - 00:00 7.00 BOPSUR N DPRB 12,600.00 PROD1 PRESSURE TEST BOPE PER AOGCC REGULATIONS AND BP ADWOP. STATE'S RIGHT TO WITNESS WAIVED BY CHUCK SCHEVE,AOGCC REPRESENTATIVE. ALL TESTS WITNESSED BY BP WSL AND NABORS TOOLPUSHER(SEE ATTACHED SIGNED PRESSURE CHARTS AND TEST REPORT). -24 HOUR NOTICE WAS PROVIDED TO AOGCC AT 11:00 ON 7/23/11. -CIRCULATE WATER THROUGH CHOKE MANIFOLD AND MUD-GAS SEPARATOR(8 BBLS TO FILL). APPLY STEAM TO MUD-GAS �QY SEPARATOR VENT TO CONFIRM OPEN VENT PATH. -LINE UP DOWN IA UNDER TEST PLUG TO MONITOR AND CONTINUOUSLY FILL WELL. STATIC LOSS RATE=6-8 BPH. -FLUSH STACK WITH FRESH WATER. -PRESSURE TEST FOLLOWING COMPONENTS TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MINUTES. -TESTED ALL CHOKE MANIFOLD VALVES (16 TOTAL)+CHOKE/KILL LINES -MANUAL CHOKE AND MANUAL KILL VALVES. -HCR CHOKE AND HCR KILL VALVES (CLOSING TIME BOTH VALVES= 1 SECS) -4"&3-1/2"FULL OPENING SAFETY VALVES. -4"DART VALVE. -TOP DRIVE AIR ACTUATED IBOP. -LOWER MANUAL IBOP ON TOP DRIVE. -BLIND/SHEAR RAMS(CLOSING TIME=14 SEC) -UPPER 3-1/2"X 6"VBRS WITH 4"&4-1/2" TEST JOINTS(CLOSING TIME ON 4"&4-1/2" TEST JOINTS=7&6 SEC) -LOWER 2-7/8"X 5"VBRS WITH 2-7/8",4"& 4-1/2"TEST JOINT(CLOSING TIME ON 2-7/8", 4",&4-1/2"TEST JTS=7,7, &6 SEC) -TESTED THE ANNULAR PREVENTER WITH 2-7/8"&4"TEST JOINTS(CLOSING TIME ON 2-7/8"&4"TEST JOINTS=20&30 SEC) -TESTED THE SUPER CHOKE AND MANUAL BEAN CHOKE. -500 PSI LOW&2500 PSI HIGH FOR 5 CHARTED MINUTES. -PERFORMED AN ACCUMULATOR DRAWDOWN TEST. -15 SEC TO BUILD 200 PSI FROM 1650',93 SEC TO FULL 3050 PSI PRESSURE. -5 NITROGEN BACKUP BOTTLES WITH 2050 PSI. -TESTED THE SIERRA GAS MONITORING SYSTEM. -PRESSURE TESTING CONCLUDED INTO 7/25/2011 Printed 9/6/2011 1:18:30PM • Orth America -ALASKA- BP Page 63 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 6/24/2011 End Date: X3-00XTY-C(4,681,752 11 ) Project:Prudhoe Bay Site:PB DS 13 -� Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/25/2011 00:00 - 00:30 0.50 BOPSUR N DPRB 12,600.00 PROD1 CONCLUDE BOPE PRESSURE TESTING. PRESSURE TEST FOLLOWING COMPONENTS TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MINUTES. -LOWER 2-7/8"X 5"VBRS WITH 2-7/8" TEST JOINT(CLOSING TIME=7 SEC) -ANNULAR PREVENTER WITH 2-7/8"TEST JOINT(CLOSING TIME=20 SEC) 00:30 - 01:30 1.00 BOPSUR N DPRB 12,600.00 PROD1 RIG DOWN AFTER BOPE TESTING. -PULL TEST PLUG&INSTALL WEAR BUSHING 01:30 - 02:30 1.00 DRILL N DPRB 12,600.00 PROD1 HOLD PJSM. PU AND RIH WITH 6-1/8" ROTARY STEERABLE SYSTEM(RSS). -BHA PRIMARILY CONSISTS OF FOLLOWING COMPONENTS: -6-1/8"HYCALOG MSF513D-B1C,S/N #130125,5 X 11 JETS, -SLB POWERDRIVE X5"PUSH THE BIT" ROTARY STEERABLE SYSTEM WITH,INC AT BIT, PORTED FLOAT&22/32"RESTRICTOR SLB IMPULSE 25K HIGH FLOW MWD, CORRECTED W/IIFR+MS -(3)4-3/4"NM FLEX DC WITH CORROSION RING IN TOP JOINT. -WELL COMMANDER CIRC SUB -DAILEY HYDRAULIC DRILLING JARS -TOTAL BHA LENGTH=191.83'. TOTAL WEIGHT=10 KLBS. -BIT TO INCLINATION=7',BIT TO RESISTIVITY=48',BIT TO GR=55' 02:30 - 07:00 4.50 DRILL N DPRB 12,600.00 PROD1 TRIP IN HOLE F/BHA @ 192'MDT/10835'MD. -FUNCTION TEST CROWN SAVER. TEST RSS AT SURFACE. SHALLOW TEST MWD @ 1132' MD. 07:00 - 09:30 2.50 DRILL N DPRB 12,600.00 PROD1 MAD LOG PASS F/10631'T/10835'MD @ 200 FPH,250 GPM,1500 PSI,NO ROTATION -TAKE SLOW PUMP RATES©09:00,10835' MD,9036'TVD,8.5 PPG MW -MP#1: 2 BPM=520 PSI,3 BPM=680 PSI -MP#2: 2 BPM=500 PSI,3 BPM=640 PSI NOTE: LEAK NOTICED ON UPPER PIPE RAM DOOR HINGE SEAL 09:30 - 10:30 1.00 DRILL N RREP 12,600.00 PROD1 POOH F/10835'MDT/7"LINER SHOE @ 10161'MD. -FLOW CHECK WELL PRIOR TO PULLING OFF BTM. FLUID LEVEL DROPPING. -INITIAL PU/SO WEIGHTS=175/125 KLBS -BEGIN NON-BILLABLE NON-PRODUCTIVE TIME FOR BOPE FAILURE(13 HOURS) 10:30 - 11:00 0.50 DRILL N RREP 12,600.00 PROD1 HELD KICK WHILE TRIPPING DRILL AND AAR TO DISCUSS RESULTS. 11:00 - 13:00 2.00 DRILL N RREP 12,600.00 PROD1 WAIT ON HES STORM PACKER DUE TO SHORT NOTICE. -CONTINUOUSLY FILL HOLE. STATIC LOSS RATE=4 BPH. Printed 9/6/2011 1:18:30PM th America -ALASKA- BP Page 64 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor. NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:00 - 17:30 4.50 DRILL N RREP 12,600.00 PROD1 RACK ONE STAND DRILLPIPE BACK AND RIH W/9-5/8"HES STORM PACKER T/108'COE -SET STORM PACKER, CLOSE BLIND RAMS, &LINE UP TO PUMP DOWN KILL LINE. -ATTEMPT TO PRESSURE TEST FROM ABOVE. UNABLE TO BUILD PRESSURE. -SWITCH MUD PUMPS AND PRESSURE TEST TO 250 PSI LOW AND 2500 PSI HIGH FOR 5 MIN. 17:30 - 18:00 0.50 DRILL N RREP 12,600.00 PROD1 CHANGEOUT UPPER PIPE RAM DOOR HINGE SEAL. -ACCUMULATOR UNIT DEPRESSURIZED AND LOCKED/TAGGED OUT. ALL BOP COMONENTS NEUTRALIZED. 18:00 - 20:00 2.00 DRILL N RREP 12;600.00 ' PROD1 PRESSURE TEST UPPER PIPE RAMS TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH (SEE ATTACHED CHART) -OPEN BLIND RAMS,PULL WEAR BUSHING AND INSTALL TEST PLUG ON 4"DRILLPIPE. -NO LEAKS IN UPPER PIPE RAM HINGE DOOR SEALS. -PULL TEST JOINT AND RE-RUN WEAR BUSHING. 20:00 - 22:00 2.00 DRILL N RREP 12,600.00 PROD1 PU ONE STAND OF DRILLPIPE AND RIH TO STORM PACKER TOP. ENGAGE STORM PKR. -CLOSE ANNULAR PREVENTER ON 4" DRILLPIPE. -CIRCULATE MUD DOWN KILL LINE THROUGH SUPERCHOKE TO MUD-GAS SEPARATOR. -UNSEAT STORM PACKER&FILL WELL. 24 BBLS PUMPED TO FILL HOLE(415',185 PSI HYDROSTATIC DROP,STILL 50 PSI OVERBALANCE TO 8 PPG EMW FORMATION). -OPEN ANNULAR PREVENTER AND FLOW CHECK WELL. FLUID LEVEL DROPPING. LOSS RATE=6-8 BPH. -PULL AND LAYDOWN 9-5/8"HES STORM PACKER. 22:00 - 22:30 0.50 DRILL N RREP 12,600.00 PROD1 RIH F/10067'T/10813'WITH 6-1/8"ROTARY STEERABLE SYSTEM. 22:30 - 23:00 0.50 DRILL N DPRB 12,600.00 PROD1 WASH&REAM FINAL 20'F/10813'T/ PREVIOUSLY DRILLED DEPTH OF 10835'MD. -DOWNLINK RSS -275 GPM,1650 PSI,40 RPM,5 KFT-LBS TORQUE -PU/SO/ROT WEIGHTS=175/125/145 KLBS -TAKE SLOW PUMP RATES @ 23:00, 10835' MD,9036'TVD,8.5 PPG MW -MP#1: 2 BPM=460 PSI,3 BPM=630 PSI Printed 9/6/2011 1:18.30PM th America -ALASKA- BP Page 65 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES I Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 00:00 1.00 DRILL N DPRB 12,600.00 PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/10835' MDT/10915'MD. -260-290 GPM,10-20 KLBS WOB,PUMP PRESSURE(ON/OFF BTM)=1700-1850/1700 PSI. -120 RPM,TORQUE(ON/OFF BTM)=6.5/5 KFT-LBS AVERAGE ROP WITH CONNECTIONS=80 FPH. -MW IN=MW OUT=8.5 PPG,44 SEC/QT -DYNAMIC LOSSES TO WELLBORE=10 BPH ACTUAL DRILLING TIME FOR 1 HOUR INTERVAL=0.28 HRS AST=O HRS,ART=0.28 HRS 7/26/2011 00:00 - 04:00 4.00 DRILL N DPRB 12,600.00 PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE F/10915' MDT/11194'MD. 1-275 GPM,10-20 KLBS WOB,PUMP PRESSURE(ON/OFF BTM)=1900-1950/1900 PSI. -95 RPM,TORQUE(ON/OFF BTM)=6-7/5 KFT-LBS. -AVERAGE ROP WITH CONNECTIONS=70 FPH. -MW IN=MW OUT=8.5 PPG,44 SEC/QT. ACTUAL DRILLING TIME FOR 1 HOUR ✓ INTERVAL=2.16 HRS. AST=0 HRS,ART=2.16 HRS. • NOTE: ROTARY STEERABLE NOT RESPONDING AS EXPECTED. DIRECTIONAL ASSY IS DROPPING ANGLE WHEN TOOLFACE IS ORIENTED DIRECTLY UP. CENTER TO CENTER DISTANCE BETWEEN SIDETRACK AND OLD WELLBORE=43'. LAST SURVEY=88.17 DEG INC,237.14 DEG AZI @ 11153'MD,9017'TVD(6'LOWER THAN SIDETRACK PLAN FOR 11100'MD). 04:00 - 05:00 1.00 DRILL N DFAL 12,600.00 PROD1 CIRCULATE HOLE CLEAN FOR TRIPPING. -275 GPM,1700 PSI,100 RPM,6 KFT-LBS TORQUE RECIPROCATE FULL STAND. -DYNAMIC LOSSES= 10 BPH. SPR TAKEN AT 04:45 -11,195'MD;9036'TVD. -MUD WEIGHT=8.5 PPG. -PUMP 1 &2-2 BPM AND 520 PSI;3 BPM AND 660 PSI. 05:00 - 10:00 5.00 DRILL N DFAL 12,600.00 PROD1 POOH F/11194'MD T/BHA @ 192' -CHECK FOR FLOW PRIOR TO PULLING OFF BOTTOM. FLUID LEVEL DROPPING. -NO TIGHT SPOTS ENCOUNTERED IN OPEN HOLE. Printed 9/6/2011 1:18:30PM -th America -ALASKA- BP Page 66 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site:PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27©83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:00 - 13:00 3.00 DRILL N DFAL 12,600.00 PROD1 SWAP OUT ROTARY STEERABLE SYSTEMS -LAY DOWN SLB POWERDRIVE X5 RSS(BIAS UNIT SER 69023). -PICKUP NEW SLB POWERDRIVE X5 RSS (BIAS UNIT SER#69083). -DOWNLOAD DATA FROM MWD TOOL. -BHA PRIMARILY CONSISTS OF FOLLOWING COMPONENTS: 6-1/8"HYCALOG MSF513D-B1C,S/N #130125,3 X 11/32&2 X 10/32 JETS. -SLB POWERDRIVE X5"PUSH THE BIT" ROTARY STEERABLE SYSTEM WITH,INC AT BIT, PORTED FLOAT&22/32"RESTRICTOR. -SLB IMPULSE 25K HIGH FLOW MWD, CORRECTED W/IIFR+MS. (3)4-3/4"NM FLEX DC WITH CORROSION RING IN TOP JOINT. -WELL COMMANDER CIRC SUB. -DAILEY HYDRAULIC DRILLING JARS. -TOTAL BHA LENGTH=165.64'. TOTAL WEIGHT=10 KLBS. -BIT TO INCLINATION=7',BIT TO RESISTIVITY=48',BIT TO GR=55' 13:00 - 18:00 5.00 DRILL N DFAL 12,600.00 PROD1 TRIP IN THE HOLE. FROM SURFACE TO 10,254'MD. -UP WEIGHT=177K LBS;DOWN WEIGHT= 130K LBS. -SHALLOW HOLE TEST MWD AT 1131'MD. -250 GPM AND 744 PSI. -FILLED PIPE EVERY 30 STANDS WHILE RUNNING IN. 18:00 - 19:30 1.50 DRILL N DFAL 12,600.00 PROD1 CUT AND SLIP 61'OF DRILLING LINE. SERVICE DRAW WORKS AND TOP DRIVE. 19:30 - 20:30 1.00 DRILL N DFAL 12,600.00 PROD1 TRIP IN THE HOLE. -FROM 10,254'TO 11,100'MD. -UP WEIGHT=180K LBS;DOWN WEIGHT= 130K LBS. 20:30 - 21:00 0.50 DRILL N DFAL 12,600.00 PROD1 WASH DOWN TO PREVIOUSLY DRILLED DEPTH OF 11,194'MD. -UP WEIGHT=180K LBS;DOWN WEIGHT= 130K LBS. -ROTATING WEIGHT=142K LBS. -283 GPM ABD 1940 PSI. -120 RPM AND 5K FT-LBS TORQUE. Printed 9/6/2011 1:18:30PM -th America -ALASKA- BP Page 67 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 00:00 3.00 DRILL N DPRB 12,600.00 PROD1 DIRECTIONALLY DRILL 6-1/8"HOLE. -FROM 11,194'TO 11,382'MD. -UP WEIGHT= 180K LBS;DOWN WEIGHT= 130K LBS. -ROTATING WEIGHT= 145K LBS. -286 GPM,12 KLBS WOB,PUMP PRESSURE (ON/OFF BTM)=1845/1837 PSI. -120 RPM,TORQUE(ON/OFF BTM)=8.5/6 KFT-LBS. -AVERAGE ROP WITH CONNECTIONS=62.3 FPH. -MW IN=MW OUT=8.6 PPG,45 SEC/QT. ACTUAL DRILLING(ALL ROTATING)TIME FOR INTERVAL=1.17 HRS. SPR TAKEN AT 22:00 -11,244'MD;9019'TVD. -MUD WEIGHT=8.6 PPG. -PUMP 1 -2 BPM AND 520 PSI;3 BPM AND 690 PSI. -PUMP 2-2 BPM AND 510 PSI;3 BPM AND 690 PSI. 7/27/2011 00:00 - 12:00 12.00 DRILL N DPRB 12,600.00 PROD1 DRILL 6 1/8"HOLE SECTION WITH BHA#8, ROTARY STEERABLE. -FROM 11,382'TO 12,259'MD. -UP WEIGHT= 180K LBS,DOWN WEIGHT= 125K LBS. -120 RPM;ROTATING WEIGHT=143K LBS. -TORQUE ON BTM=7.6K FT-LBS;TORQUE ✓ OFF BTM=6K FT-LBS. -259 GPM;1853 PSI ON BTM;1808 PSI OFF BTM. -WEIGHT ON BIT=12K LBS. -MUD WEIGHT=8.6 PPG IN AND 8.6+PPG OUT. SLOW PUMP RATES @ 04:00 HRS: -TMD= 11,753',TVD=9,017'. -PUMP 1 --2 BPM AND 540 PSI;3 BPM AND 720 PSI. -PUMP 2--2 BPM AND 560 PSI;3 BPM AND 740 PSI. CROSSED FAULT 3 AT 12,150'MD.DID NOT SEE ANY INDICATIONS WHILE DRILLING. SLOW PUMP RATES @ 10:30 HRS: -TMD=12,227',TVD=9,030'. -PUMP 1 --2 BPM AND 560 PSI;3 BPM AND 720 PSI. -PUMP 2--2 BPM AND 560 PSI;3 BPM AND 740 PSI. ACTUAL DRILLING(ALL ROTATING)TIME FOR INTERVAL=5.84 HRS. Printed 9/6/2011 1:18:30PM -th America -ALASKA- BP Page 68 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3 OOXTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27©83.00ft(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 N DPRB 12,600.00 PROD1 DRILL 6 1/8"HOLE SECTION WITH BHA#8, ROTARY STEERABLE. -FROM 12,259'TO 12,698'MD. -UP WEIGHT=190K LBS,DOWN WEIGHT= 124K LBS. -100 RPM;ROTATING WEIGHT= 142K LBS. -TORQUE ON BTM=9K FT-LBS;TORQUE OFF BTM=6K FT-LBS. -275 GPM;1930 PSI ON BTM;1927 PSI OFF BTM. -WEIGHT ON BIT= 10K LBS. -MUD WEIGHT=8.6+PPG IN AND 8.7+PPG OUT. ACTUAL DRILLING(ALL ROTATING)TIME FOR INTERVAL=4.77 HRS. 18:30 - 20:00 1.50 DRILL N DPRB 12,600.00 PROD1 CIRCULATE THE HOLE CLEAN PRIOR TO SHORT TRIP. -RECIPROCATING FROM 12,698'TO 12,600' MD. -UP WEIGHT= 190K LBS,DOWN WEIGHT= 124K LBS. -80 RPM;ROTATING WEIGHT=143K LBS. -TORQUE=6K FT-LBS. -274 GPM;1900 PSI. -PUMPED 400 BBLS UNTIL HOLE CLEANED UP. r SLOW PUMP RATES @ 20:00 HRS: I -TMD=12,698',TVD=9,032'. -PUMP 1 --2 BPM AND 550 PSI;3 BPM AND 740 PSI. -PUMP 2--2 BPM AND 560 PSI;3 BPM AND 750 PSI. 20:00 - 21:30 1.50 DRILL N DPRB 12,600.00 PROD1 SHORT TRIP ON ELEVATORS. -FROM 12,698'TO 12,218'MD. -EXPERIENCED TIGHT HOLE AND OVERPULLS UP TO 15K LBS OVER. -AT 12,483',12,440',12,279'. -WORKED EACH TIGHT SPOT. -PULLED INTO TIGHT SPOT AT 12,218'MD. -MADE SEVERAL ATTEMPTS TO WORK THROUGH. -PULLED UP TO 40K LBS OVER. 21:30 - 23:00 1.50 DRILL N DPRB 12,600.00 PROD1 RAN BACK IN THE HOLE 3 STANDS AND CIRCULATE TO CLEAN HOLE. -RUN IN FROM 12,218'TO 12,509'MD. -RECIPROCATING FROM 12,509'TO 12,460' MD. -UP WEIGHT=190K LBS,DOWN WEIGHT= 124K LBS. -100 RPM;ROTATING WEIGHT= 143K LBS. -TORQUE=6K FT-LBS. -266 GPM;1908 PSI. -CIRCULATED A FULL BOTTOMS UP,300 BBLS. Printed 9/6/2011 1:18:30PM 'th America -ALASKA- BP Page 69 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 23:30 0.50 DRILL N DPRB 12,600.00 PROD1 SHORT TRIP ON ELEVATORS. -FROM 12,509'TO 12,218'MD. -EXPERIENCED 15K LBS OVERPULL AT 12,218'. -WORKED THROUGH AND UP TO 12,211' MD. -EXPERIENCED 40K LBS OVERPULL AT • 12,211'. -MADE 3 ATTEMPTS TO WORK PAST TIGHT SPOT. 23:30 - 00:00 0.50 DRILL N DPRB 12,600.00 PROD1 RAN IN 1 STAND AND BACK REAMED THROUGH FAULT 3. -FROM 12,321'TO 12,211'AT 00:00. -UP WEIGHT=180K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT= 142K LBS. -TORQUE=6K FT-LBS. -265 GPM;1820 PSI. 7/28/2011 00:00 - 01:00 1.00 DRILL N DPRB 12,600.00 PROD1 BACK REAMED THROUGH FAULT 3. -FROM 12,211'TO 11,945'. -UP WEIGHT=180K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT=142K LBS. -TORQUE=6K FT-LBS. -265 GPM;1820 PSI. 01:00 - 02:30 1.50 DRILL N DPRB 12,600.00 PROD1 CIRCULATE TO CLEAN THE HOLE. -RECIPROCATING FROM 12,030'TO 11,945' MD. -UP WEIGHT=190K LBS,DOWN WEIGHT= 124K LBS. -80 RPM;ROTATING WEIGHT=143K LBS. -TORQUE=6K FT-LBS. -267 GPM;1800 PSI. 02:30 - 03:30 1.00 DRILL N DPRB 12,600.00 PROD1 SHORT TRIP ON ELEVATORS. -FROM 11,945'TO 11,475'MD. -EXPERIENCED 15K LBS OVERPULL. -AT 11,870'AND 11,800'MD. -WORKED EACH SPOT ONCE. -UP WEIGHT= 180K LBS;DOWN WEIGHT= 120K LBS. 03:30 - 04:00 0.50 DRILL N DPRB 12,600.00 PROD1 TRIP IN THE HOLE. -FROM 11,475'TO 12,698'MD. -WIPED ONE TIGHT SPOT AT 12,120'MD. -TOOK 25K LBS TO GET THROUGH. -DID NOT SEE ANYTHING PULLING BACK UP OR RUNNING BACK THROUGH. -WASHED DOWN THE LAST STAND. • -UP WEIGHT=180K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT=142K LBS. -TORQUE=6K FT-LBS. -275 GPM;1996 PSI. -DOWNLINKED COMMANDS TO ROTARY STEERABLE ON THE WAY DOWN. Printed 9/6/2011 1:18:30PM -th America -ALASKA- BP Page 70 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.:NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 - 12:00 8.00 DRILL N DPRB 12,600.00 PROD1 DRILL 6 1/8"HOLE SECTION WITH BHA#8, ROTARY STEERABLE. -FROM 12,698'TO 13,375'MD. -UP WEIGHT= 184K LBS,DOWN WEIGHT= 124K LBS. -100 RPM;ROTATING WEIGHT= 144K LBS. -TORQUE ON BTM=9.3K FT-LBS;TORQUE OFF BTM=6.2K FT-LBS. -275 GPM;2020 PSI ON BTM;1995 PSI OFF BTM. WEIGHT ON BIT= 12K LBS. -MUD WEIGHT=8.6+PPG IN AND 8.6+PPG OUT. CROSSED FAULT#4 AT 13,075'MD. 9040' TVD. -NO INCREASE IN LOSSES DURING OR AFTER CROSSING FAULT SLOW PUMP RATES @ 09:00 HRS: -TMD=13,168',TVD=9041'. -PUMP 1 --2 BPM AND 660 PSI;3 BPM AND 840 PSI. -PUMP 2--2 BPM AND 680 PSI;3 BPM AND 860 PSI. ACTUAL DRILLING(ALL ROTATING)TIME FOR INTERVAL=4.80 HRS. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 71 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 18:00 6.00 DRILL N DPRB 12,600.00 PROD1 DRILL 6 1/8"HOLE SECTION WITH BHA#8, ROTARY STEERABLE. -FROM 13,375'TO 13,890 MD. -UP WEIGHT=190K LBS,DOWN WEIGHT= 120K LBS. -100 RPM;ROTATING WEIGHT=142K LBS. -TORQUE ON BTM=8.8K FT-LBS;TORQUE OFF BTM=6.5K FT-LBS. -275 GPM;2180 PSI ON BTM;2130 PSI OFF BTM. -WEIGHT ON BIT=10K LBS. -MUD WEIGHT=8.6+PPG IN AND 8.7 PPG OUT. DRILLER ANNOUNCED A SPILL DRILL IN THE PUMP ROOM. WHILE THE CREW WAS RESPONDING,THE DRILLER ANNOUNCED A D-2, KICK WHILE DRILLING DRILL. CREW RESPONDED APPROPRIATELY AND IMMEDIATELY SECURED THE WELL. CROSSED FAULT#5 AT 13,843'MD,9062'TVD. -TORQUE INCREASED AND ROP SLOWED FROM 190 FPH TO 115 FPH. -NO INCREASE IN LOSSES. SLOW PUMP RATES @ 14:10 HRS: -TMD= 13,638',TVD=9057'. -PUMP 1 --2 BPM AND 680 PSI;3 BPM AND 850 PSI. -PUMP 2--2 BPM AND 690 PSI;3 BPM AND 850 PSI. ACTUAL DRILLING(ALL ROTATING)TIME FOR INTERVAL=3.58 HRS. Printed 9/6/2011 1:18:30PM -th America -ALASKA- BP Page 72 of 77:. Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27©83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 00:00 6.00 DRILL N DPRB 12,600.00 PROD1 DRILL 1/8"HOLE SECTION WITH BHA#8, ROTARY STEERABLE. -FROM 13,890'TO 14,266'MD. -UP WEIGHT=192K LBS,DOWN WEIGHT= 119K LBS. -100 RPM;ROTATING WEIGHT=139K LBS. -TORQUE ON BTM=9.0K FT-LBS;TORQUE OFF BTM=6.5K FT-LBS. -275 GPM;2180 PSI ON BTM;2130 PSI OFF BTM. -WEIGHT ON BIT= 10K LBS. -MUD WEIGHT=8.6+PPG IN AND 8.7 PPG OUT. ENCOUNTERED SHALE STRINGERS FROM 14,100'TO 14,200'MD. CROSSED A SMALL FAULT AT 14,205'MD, 9064'TVD. -LOSSES INCREASED FROM 12 BPH TO 20 BPH. DRILLED INTO THE BASE OF THE SHUBLIK AT 14,230'MD,9064'TVD. SLOW PUMP RATES @ 20:20 HRS: -TMD=14,048',TVD=9066'. -PUMP 1 --2 BPM AND 710 PSI;3 BPM AND 900 PSI. -PUMP 2--2 BPM AND 730 PSI;3 BPM AND 900 PSI. ACTUAL DRILLING(ALL ROTATING)TIME FOR INTERVAL=3.49 HRS. 7/29/2011 00:00 - 02:30 2.50 DRILL N DPRB 12,600.00 PROD1 DRILL 6 1/8"HOLE SECTION WITH BHA#8, ROTARY STEERABLE. -FROM 14,266'TO 14.327'MD. -UP WEIGHT=191K LBS,DOWN WEIGHT= 119K LBS. -100 RPM;ROTATING WEIGHT= 140K LBS. -TORQUE ON BTM=8.0K FT-LBS;TORQUE OFF BTM=6.5K FT-LBS. -273 GPM;2185 PSI ON BTM;2130 PSI OFF BTM. -WEIGHT ON BIT=12K LBS. -MUD WEIGHT=8.7 PPG IN AND 8.7 PPG OUT. ACTUAL DRILLING(ALL ROTATING)TIME FOR INTERVAL=1.27 HRS. Printed 9/6/2011 1:18:30PM i� . w Page 73 of 77 :" tia [ .� Gill � ,,}i 44, Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:30 - 03:00 0.50 DRILL N DPRB 12,600.00 PROD1 D-2,KICK WHILE DRILLING DRILL-SPILL DRILL-MAN DOWN DRILL. DRILLER CALLED A WELL CONTROL INCIDENT WITHOUT CALLING OUT THAT IT WAS A DRILL.CREW RESPONDED AND SECURED THE WELL.THE FLOOR HAND THAT WENT TO THE CELLAR CALLED OUT THAT THE MANUALS WERE OPEN. WHEN THE DRILLER ANNOUNCED THAT HE HAD CLOSED THE ANNULAR AND OPENED THE HCR THE FLOOR HAND IN THE CELLAR CALLED OUT A SPILL IN THE CELLAR. HE THEN LAID DOWN ON THE CELLAR FLOOR. AS THE CREW RESPONDED TO THE SPILL IN THE CELLAR THE FIRST HAND TO OPEN THE DOOR NOTICED THE FLOOR HAND ON THE FLOOR AND STOPPED THE OTHER PERSONNEL FROM ENTERING THE CELLAR DUE TO A POSSIBLE H2S/GAS SCENARIO. HE CALLED OUT THE MAN DOWN AND THE CREW MUSTERED IN A SAFE AREA AND NOTIFIED THE DRILLER. THE DRILLER NOTIFIED THE TOOL PUSHER,WELL SITE LEADER AND SPOC. THE TOOL PUSHER AND WSL SIMULATED NOTIFICATION OF ERT AND THE SPOC MUSTERED 3RD PARTY HANDS IN SECONDARY MUSTER AREA DUE TO CHANGING WIND CONDITIONS.THE TOTAL r RESPONSE TIME FOR THE ENTIRE DRILL WAS 4MIN 39 SEC. AAR:CREW RESPONDED VERY WELL TO THE CHANGING DRILL.THE ONLY PERSONNEL WHO KNEW IT WAS A DRILL / WERE THE DRILLER,ONE FLOOR HAND,THE ✓ TOOL PUSHER AND THE WELL SITE LEADER. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 74 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 ' End Date: X3-00XTY-C(4,681,752.11 ) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 13:00 10.00 DRILL N DPRB 12,600.00 PROD1 DRILL 6 1/8"HOLE SECTION WITH BHA#8, ROTARY STEERABLE TO TD AT 14,970'MD. -FROM 14,327'TO TD AT 14,860'MD. -UP WEIGHT=200K LBS,DOWN WEIGHT= 113K LBS. -100 RPM;ROTATING WEIGHT=137K LBS. -TORQUE ON BTM=8.0K FT-LBS;TORQUE OFF BTM=6.5K FT-LBS. -275 GPM;2360 PSI ON BTM;2350 PSI OFF BTM. -WEIGHT ON BIT= 12K LBS. -MUD WEIGHT=8.6+PPG IN AND 8.7 PPG OUT. RE-ENTERED THE TSAD AT 14,409'MD,9067' TVD. SLOW PUMP RATES @ 04:20 HRS: -TMD=14,355',TVD=9062'. -PUMP 1 --2 BPM AND 720 PSI;3 BPM AND 930 PSI. -PUMP 2--2 BPM AND 740 PSI;3 BPM AND 960 PSI. SLOW PUMP RATES @ 10:40 HRS: -TMD= 14,766',TVD=9085'. -PUMP 1 --2 BPM AND 750 PSI;3 BPM AND 950 PSI. -PUMP 2--2 BPM AND 760 PSI;3 BPM AND 960 PSI. TD WELL AT 14,970'MD,9091'TVD AT 12:30 ACTUAL DRILLING(ALL ROTATING)TIME FOR INTERVAL=6.74 HRS. 13:00 - 17:00 4.00 DRILL N DPRB 12,600.00 PROD1 CIRCULATE THE HOLE CLEAN PRIOR TO ✓ TRIPPING BACK TO THE SHOE. -CIRCULATED 3 BOTTOMS UP WITH ROTATION AND RECIPROCATION. -FROM 14,970'TO 14,672'MD. -STANDING BACK 1 STAND ON EACH BOTTOMS UP. -UP WEIGHT=200K LBS,DOWN WEIGHT= 113K LBS. -100 RPM;ROTATING WEIGHT=137K LBS. -TORQUE=7K FT-LBS. -275 GPM;2240 PSI. SLOW PUMP RATES @ 16:15 HRS: -TMD= 14,751',TVD=9,085'. -PUMP 1 --2 BPM AND 700 PSI;3 BPM AND 880 PSI. -PUMP 2--2 BPM AND 700 PSI;3 BPM AND 860 PSI. MONITORED THE WELL AFTER CIRCULATING. -10 BPH STATIC LOSS RATE. Printed 9/6/2011 1:18:30PM •th America -ALASKA- BP Page 75 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:00 20:00 3.00 DRILL N DPRB 12,600.00 PROD1 SHORT TRIP ON ELEVATORS. FROM 14,751'TO 14,092'MD. TIGHT HOLE AT 14,144';25K LBS OVERPULL. -ATTEMPTED TO WORK THROUGH SEVERAL TIMES. -RAN IN 1 STAND AND CIRCULATED AT 1 BPM,450 PSI. -WORKED THROUGH TIGHT SPOT WITH PUMPS ON. -WORKED SPOT WITHOUT PUMPS. -NO DRAG. -TIGHT HOLE AT 14,092;25K LBS OVERPULL. -ATTEMPTED TO WORK THROUGH WITH THE SAME STRATEGY. -DID NOT MAKE ANY PROGRESS. 20:00 - 21:00 1.00 DRILL N DPRB 12,600.00 PROD1 RAN BACK IN THE HOLE 3 STANDS AND CIRCULATE TO CLEAN HOLE. -RUN IN FROM 14,092'TO 14,390'MD. -RECIPROCATING FROM 14,390'TO 14,280' MD. -UP WEIGHT=195K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT=135K LBS. -TORQUE=6.5K FT-LBS. 278 GPM;2150 PSI. -MONITORED WELL. -10 BPH STATIC LOSS RATE. 21:00 - 00:00 3.00 DRILL N DPRB 12,600.00 PROD1 SHORT TRIP ON ELEVATORS. -FROM 14,390'TO 13,253'MD. -EXPERIENCED TIGHT HOLE WITH UP TO 25K LBS OVERPULL AT: -14,095'-14,085'. -14,053'-14,017'. -13,991'-13,920'. -13,467'-13,418'. -13,288'-13,280'. -WORKED PIPE AND WIPED EACH SPOT. -UNABLE TO WORK PAST TIGHT SPOT AT 13,253'. -RUN IN THE HOLE TO 13,544'AND RIG UP TO CIRCULATE. 7/30/2011 00:00 - 01:00 1.00 DRILL N DPRB 12,600.00 PROD1 CIRCULATE TO CLEAN HOLE. ✓ -RECIPROCATING FROM 13,544'TO 13,455' MD. -UP WEIGHT= 195K LBS,DOWN WEIGHT= 120K LBS. -80 RPM;ROTATING WEIGHT=140K LBS. -TORQUE=6.5K FT-LBS. -250 GPM;1910 PSI. -PUMPED A FULL BOTTOMS UP,410 BBLS. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 76 of 77 Operation Summary Report Common Well Name. 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 101:00 03:30 2.50 DRILL P PROD1 SHORT TRIP ON ELEVATORS. -FROM 13,544'TO 12,126'MD. -EXPERIENCED TIGHT HOLE AT 12,126': -ATTEMPTED TO WORK PIPE WITH 30K LBS OVERPULL. -COULD NOT COME BACK DOWN. -WASHED DOWN WITHOUT ROTATION. -250 GPM;1570 PSI. -HAD TO SET DOWN 40K LBS TO GET THROUGH. -WORKED PIPE AND WIPED TIGHT SPOT. CONTINUED TO TRIP OUT ON ELEVATORS. -UP WEIGHT= 185K LBS;DOWN WEIGHT= 115K LBS. -PULLED INTO TIGHT SPOT AT 11,780. -COULD NOT WORK PAST. 03:30 - 04:30 1.00 DRILL • P PROD1 RAN BACK IN THE HOLE 3 STANDS AND CIRCULATE TO CLEAN HOLE. -RUN IN FROM 11,780'TO 12,133'MD. -80 RPM;ROTATING WEIGHT= 140K LBS. -TORQUE=6.5K FT-LBS. -250 GPM;1710 PSI. -CIRCULATED A FULL BOTTOMS UP,390 BBLS. 04:30 - 05:30 1.00 DRILL P PROD1 SHORT TRIP ON ELEVATORS. -FROM 12,133'TO 11,730'MD. -PULLED INTO TIGHT SPOT AT 11,730. -UNABLE TO GET PAST WORKING UP TO 40K LBS OVERPULL. 05:30 - 06:00 0.50 DRILL P PROD1 BACK REAM THROUGH TIGHT SPOT. -FROM 11,730'TO 11,570'MD. -UP WEIGHT=185K LBS;DOWN WEIGHT= 115K LBS. -80 RPM;ROTATING WEIGHT=140K LBS. -TORQUE=6K FT-LBS. -250 GPM;1780 PSI. 06:00 - 07:30 1.50 DRILL P PROD1 SHORT TRIP ON ELEVATORS. PULLED TO ABOVE THE OPEN HOLE SIDE TRACK DEPTH OF 10,683'. -FROM 11,570'TO 10,630'MD. -RAN BACK IN THE HOLE TO 11,005'MD. -PUMPED A SURVEY TO CONFIRM THE ABILITY TO RE-ENTER THE SIDE TRACK. CONTINUED TO PULL OUT OF THE HOLE ON ELEVATORS TO THE 7"SHOE. -FROM 11,005'TO 10,254'MD. -UP WEIGHT= 170K LBS;DOWN WEIGHT= 115K LBS. 07:30 - 09:00 1.50 DRILL P PROD1 CIRCULATE TO CLEAN THE HOLE AT THE 7" SHOE. -UP WEIGHT=170K LBS,DOWN WEIGHT= 115K LBS. -80 RPM;ROTATING WEIGHT= 140K LBS. -TORQUE=4K FT-LBS. -250 GPM;1540 PSI. 09:00 - 11:00 2.00 DRILL P PROD1 RAN BACK IN THE HOLE TO TD. -FROM 10,254'TO 14,970'MD. -UP WEIGHT=195K LBS;DOWN WEIGHT= 110K LBS. -HAD TO WASH DOWN THE LAST 20'TO TD. Printed 9/6/2011 1:18:30PM rth America -ALASKA- BP Page 77 of 77 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:6/24/2011 End Date: X3-00XTY-C(4,681,752.11 ) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:00 - 15:30 4.50 DRILL P PROD1 CIRCULATE THE HOLE CLEAN PRIOR TO TRIPPING BACK TO THE SHOE. -CIRCULATED 3 BOTTOMS UP WITH ROTATION AND RECIPROCATION. -FROM 14,970'TO 14,672'MD. -STANDING BACK 1 STAND ON EACH BOTTOMS UP. -UP WEIGHT=200K LBS,DOWN WEIGHT= 120K LBS. -100 RPM;ROTATING WEIGHT=135K LBS. -TORQUE=6K FT-LBS. -277 GPM;2213 PSI. SLOW PUMP RATES @ 15:10 HRS: -TMD= 14,761',TVD=9,085'. -PUMP 1 --.2 BPM AND 690 PSI;3 BPM AND 870 PSI. -PUMP 2--2 BPM AND 680 PSI;3 BPM AND 870 PSI. MONITORED THE WELL AFTER CIRCULATING. -10 BPH STATIC LOSS RATE. 15:30 - 19:30 4.00 DRILL P PROD1 PULL OUT OF THE HOLE WITH BHA#8 TO ABOVE THE OPEN HOLE SIDE TRACK DEPTH OF 10,683'MD. -FROM 14,672'TO 10,630'MD. -EXPERIENCED 25K LBS OVERPULL AT 13,759'AND 13,755'MD. -WIPED EACH SPOT. -NO OVERPULL OR DRAG NOTED. 19:30 - 20:00 0.50 DRILL P PROD1 RAN BACK IN THE HOLE AND VERIFIED THE ABILITY TO ENTER THE OPEN HOLE SIDE TRACK. -FROM 10,630'TO 11,002'MD. -PUMPED A SURVEY TO CONFIRM. 20:00 - 21:00 1.00 DRILL P PROD1 PULL OUT OF THE HOLE ON ELEVATORS TO THE 7"SHOE. -FROM 11,002'TO 10,286'MD. -UP WEIGHT= 170K LBS;DOWN WEIGHT= 135K LBS 21:00 - 22:30 1.50 DRILL P PROD1 CIRCULATE THE HOLE CLEAN. -DROPPED THE 1.76"BALL AND OPENED THE WELL COMMANDER. -TOOL OPENED WITH 2380 PSI. -PUMPED 2 BOTTOMS UP,690 BBLS. -RECIPROCATING FROM 10,254'TO 10,200'MD. -UP WEIGHT=170K LBS;DOWN WEIGHT =135K LBS. -113 RPM;ROTATING WEIGHT= 135K LBS. -582 GPM;1956 PSI. 22:30 - 00:00 1.50 DRILL P PROD1 CIRCULATED A 45 BBL STEEL LUBE PILL. -250 GPM;795 PSI. Printed 9/6/2011 1:18:29PM North America -ALASKA- BP Page 1 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type:COM-ONSHORE(CON) Start Date:7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/31/2011 00:00 - 01:00 1.00 DRILL P PROD1 !CONTINUE TO CIRCULATE AROUND 45 BBL STEEL LUBE PILL. !-250 GPM;795 PSI. H.DROP THE 1.76"BALL AND CLOSED THE 'WELL COMMANDER. -TOOL CLOSED AT 2460 PSI. -MONITORED WELL. -1.5 BPH STATIC LOSS RATE. 01:00 - 04:30 I 3.50 DRILL P PROD1 PULL OUT OF THE HOLE WITH BHA#8, ROTARY STEERABLE SYSTEM,STANDING BACK DRILL PIPE. -FROM 10,254'TO 190'MD. -DROPPED 2.25"DRIFT PRIOR TO PULLING OUT OF THE HOLE. 04:30 - 05:30 1.00 DRILL P PROD1 LAY DOWN BHA#8 PER DIRECTIONAL DRILLER AND MWD REPRESENTATIVES. -PJSM WITH RIG CREW,DIRECTIONAL DRILLER AND MWD REPRESENTATIVE. -DULL BIT GRADE:3-1-BT-A-X-I-CT-TD 05:30 - 06:30 1.00 BOPSUR P PROD1 JET BOP STACK AND FUNCTION TEST RAMS. -FUNCTION BLIND SHEAR RAMS. -CLOSING TIME= 10 SEC. -PICK UP A SINGLE JOINT OF 4"DRILL PIPE AND JET TOOL. -SPACE OUT TO FUNCTION TEST RAMS. ��, -FUNCTION TEST BOP COMPONENTS AS FOLLOWS: �ID -HCR KILL; CLOSING TIME=0.5 SEC. -HCR CHOKE; CLOSING TIME=0.5 SEC. -LOWER PIPE RAMS;CLOSING TIME 10 SEC. -UPPER PIPE RAMS; CLOSING TIME 8 SEC. -ANNULAR PREVENTER;CLOSING TIME= 21 SEC. -JET AND WASH BOP STACK TO CLEAN RAM CAVITIES. 06:30 - 09:00 2.50 CASING P PROD1 RIG UP TO RUN 4 1/2", 12.6 LB/FT,13CR, VAMTOP PRODUCTING LINER. -PJSM WITH RIG CREW AND CASING CREW. -RIG UP DOUBLE STACK TONGS, COMPENSATOR,AND TORQUE TURN EQUIPMENT. 09:00 - 12:00 3.00 CASING P RUNPRD RUN IN THE HOLE WITH THE4 1/2", 12.6 LB/FT,VAMTOP PRODUCTION LINER. -PJSM WITH RIG CREW,CASING CREW AND BAKER REPRESENTATIVE. -MAKE UP THE SHOE TRACK AND CHECK THE FLOATS. I-RUN TO 1241'MD. I-UP WEIGHT=40K LBS;DOWN WEIGHT= 40K LBS. Printed 9/7/2011 4:04:43PM 'rth America -ALASKA- BP Page 2 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type:COM-ONSHORE(CON) Start Date: 7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12:00:O0AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 19:00 ! 7.00 CASING P RUNPRD RUN IN THE HOLE WITH THE 4 1/2", 12.6 LB/FT,VAMTOP PRODUCTION LINER. -PJSM WITH SECOND RIG CREW,CASING CREW AND BAKER REPRESENTATIVE. -FROM 1241'TO TOP OF 7"LINER AT 3248' MD. -UP WEIGHT=62K LBS;DOWN WEIGHT= 62K LBS. -FROM 3248'TO 4806'MD-LAST JOINT OF 4 1/2"VAMTOP. -UP WEIGHT=80K LBS;DOWN WEIGHT= 75K LBS. MAKE UP BAKER FLEXLOCK LINER HANGER AND'ZXPN'LINER TOP PACKER ASSEMBLEY PER BAKER REPRESENTATIVE. 19:00 - 20:00 i 1.00 CASING P RUNPRD RIG DOWN CASING RUNNING EQUIPMENT AND RIG UP TO RUN IN ON 4"DRILL PIPE. 20:00 - 21:30 1.50 CASING P RUNPRD MAKEUP A 4"DRILL PIPE PUP AND A SINGLE JOINT OF 4"DRILL PIPE. • -CIRCUALTE 1.5 LINER AND DRILL PIPE VOLUMES,196 BBLS. -212 GPM;292 PSI. 21:30 - 23:30 2.00 CASING ' N RREP 4,888.00 RUNPRD TROUBLE SHOOT AND REPAIR A HYDRAULIC LEAK ON THE TOP DRIVE. • • -TIGHTEN BOLTS ON A SOLENOID TO STOP • THE LEAK. 23:30 - 00:00 0.50 i CASING ' P RUNPRD II RUN IN THE HOLE WITH THE 4 1/2", 12.6 'LB/FT,VAMTOP PRODUCTION LINER ON STANDS OF 4"DRILL PIPE. -FROM 4888'TO 5828'MD. -UP WEIGHT=85K LBS;DOWN WEIGHT= — 80K LBS. ;. 8/1/2011 00:00 - 02:30 2.50 CASING ! P RUNPRD RUN IN THE HOLE WITH THE 4 1/2", 12.6 LB/FT,VAMTOP PRODUCTION LINER ON STANDS OF 4"DRILL PIPE. I -FROM 5828'TO THE 7"SHOE AT 10,286'MD. 1-UP WEIGHT= 153K LBS;DOWN WEIGHT= 122K LBS. -FILLING THE PIPE EVERY 10 STANDS. 02:30 - 04:00 1.50 CASING P RUNPRD CIRCULATE AT THE 7"SHOE. -STAGE PUMPS UP TO 211 GPM AND 730 PSI. -RECIPROCATING FROM 10,280'TO 10,150' MD -PUMPED 212 BBLS. 04:00 - 06:00 2.00 CASING P RUNPRD RUN IN THE HOLE WITH THE 4 1/2", 12.6 I R/FT VAMTOP PRODUCTION LINER ON STANDS OF 4"DRILL PIPE. -FROM THE 7"SHOE AT 10,280'TO 14,200' MD. -UP WEIGHT= 180K LBS;DOWN WEIGHT= 110K LBS. 06:00 - 07:00 1.00 CASING P RUNPRD CIRCULATE 135 BBLS IN RESPONSE TO SHIFT ON BROOMSTICK PLOT.. -STAGE PUMPS UP TO 168 GPM AND 1085 • PSI. -RECIPROCATING FROM 14,200'TO 14,125' MD. -EXPERIENCED SOME SMALL PACK-OFF ISSUES WHILE STAGING UP PUMPS. Printed 9/7/2011 4:04:43PM )rth America-ALASKA- BP Page 3 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: COM-ONSHORE(CON) Start Date: 7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:00 - 10:00 3.00 CASING P RUNPRD RUN IN THE HOLE WITH THE4 112", 12.6 LB/FT,VAMTOP PRODUCTION LINER ON STANDS OF 4"DRILL PIPE. -FROM 14,2125 TO 14,970'MD. WORKED TIGHT SPOT AT 14,320'. -TOOK 35K LBS TO GET THROUGH. -ENCOUNTERED TIGHT SPOT 14,362'. -ATTEMPTED TO WAS PAST WITH PUMPS ON. -2 BPM;1070 PSI. -HAD PROBLEMS PACKING OFF. -WORK PIPE WITH UP TO 35K LBS OVER PULL -NO PROGRESS -SET DOWN UP TO 50K LBS. -NO PROGRESS. -SHUT DOWN PUMPS AND LET HOLE RELAX FOR 15 MIN. -WORK PIPE DOWN THROUGH TIGHT SPOT WITH 35K LBS. -CONTINUED TO ENCOUNTER TIGHT SPOT AT: - 14,619';14,700';14,785';14,829';AND 14,8656'. • -MADE UP THE CEMENT HEAD AND A SINGLE JOINT OF 4"DRILL PIPE. -WASHED TO BOTTOM AT 14.970'. -UP WEIGHT= 195K LBS;DOWN WEIGHT= 117K LBS. 10:00 - 14:00 4.00 CASING P , RUNPRD CIRCULATE TO CONDITION THE MUD PRIOR • I TO CEMENTING. -STAGE PUMPS UP TO 3 BPM;1000 PSI. -RECIPROCATING PIPE FROM 14,970'TO 14,955'MD.I �/ I -UP WEIGHT=195K LBS;DOWN WEIGHT= • '117K LBS. Printed 9/7/2011 4:04:43PM • Orth America -ALASKA- BP Page 4 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type:COM-ONSHORE(CON) Start Date: 7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum:13-27 @83.00ft(above Mean Sea Level) Date From-To I Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:00 - 16:30 2.50 CASING P RUNPRD CEMENT 1/2", 12.6 LB/FT,VAMTOP LINER. -PJSM WITH RIG CREW,SCHLUMBERGER Mf CEMENTERS, BAKER REPRESENTATIVES, AND CH2MHILL DRIVERS. y(541 -BATCH UP 15.8 PPG,TYPE'G'CEMENT. -YIELD= 1.17 CUFT/SK ( ntr -MIX WATER RATIO=5.198 GAUSK. I 13:54-PUMP 10 BBLS 11.5PPG MUDPUSH II. -3.5 BPM AND 911 PSI. -SHUT DOWN PUMPS,CLOSE LOWER TIW VALVE. -PRESSURE TEST LINES TO 250/4500 PSI. -GOOD TEST. 14:03-OPEN LOWER TIW VALVE AND PUMP 13 BBLS 11.5 PPG MUDPUSH II. 3.8 BPM AND 1140 PSI. 14:12-LINE UP TO PUMP CEMENT. -PIMP 111 BBLS OF 15 8 PPG TYPE'Q.' CEMENT. -3.8 BPM AND 938 PSI. 14:54-SHUT DOWN PUMPS AND DROP DRILL { PIPE WIPER DART. -BLOW BACK LINES TO CEMENTERS. 14:55-LINE UP AND BEGIN DISPLACING CEMENT WITH RIG PUMPS. -DISPLACE CEMENT WITH 75 BBL 8.5 PPG PERF PILL. -FOLLOW PERF PILL WITH 105 BBLS 8.5 PPG FLOPRO -STAGE UP TO 5 BPM AND 132 PSI. -LATCHED AND SHEARED LINER WIPER PLUG. -107.8 BBLS INTO DISPLACEMENT. • -CONTINUED DISPLACING. -115.4 BBLS AWAY: 3 BPM AND 2600 I PSI. -126.9 BBLS AWAY: 3 BPM AND 2650 PSI. -138.5 BBLS AWAY: 3 BPM AND 2597 PSI. -150 BBLS AWAY: 3 BPM AND 2597 PSI. -161.6 BBLS AWAY:3 BPM AND 2715 PSI. -179.5 BBLS AWAY: BUMPED PLUG WITH 3500 PSI 15:45-CEMENT IN PLACE. -CONTINUED TO PRESSURE UP TO 3950 PSI AND SET HANGER. -SET DOWN 60K LBS. -BLEED OFF AND CHECK FLOATS • -GOOD. -PRESSURED UP TO 4300 PSI AND SET LINER TOP PACKER. Printed 9/7/2011 4:04:43PM •firth America -ALASKA- BP Page 5 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type:COM-ONSHORE(CON) Start Date: 7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) r -UP WEIGHT=165K LBS;DOWN WEIGHT= 135K LBS. -EXPOSE THE DOG SUBS AND SET DOWN 105K LBS TO OBSERVE THE SHEAR. -SET DOWN AND VERIFY LINER TOP PACKER SET. -UN STING FROM PACKER WITH CIRCULATION. 16:30 - 17:00 0.50 CASING P RUNPRD CLEAN CEMENT RETURNS FROM TOP OF LINER. 1 -504 GPM;1800 PSI. -RECIPROCATING FROM 10,120'TO 10,105' MD. -20 BBLS OF CEMENT RETURNS AT _ SURFACE. 17:00 - 18:30 1.50 CASING P 1 RUNPRD DISPLACE WELL TO 8.4 PPG 2%KCL. -264 GPM;630 PSI. -UP WEIGHT= 165K LBS;DOWN WEIGHT= 135K LBS. 18:30 - 19:30 1.00 CASING P RUNPRD RIG DOWN CEMENT EQUIPMENT. -MONITOR THE WELL FOR 10 MIN. NO FLOW. 19:30 - 22:30 3.00 CASING P ! RUNPRD PULLING OUT OF THE HOLE WITH THE LINER RUNNING TOOL STANDING BACK DRILL PIPE. -FROM 10,115'TO 4695'MD. -UP WEIGHT=90K LBS;DOWN WEIGHT= 85K LBS. [22:30 - 00:00 1.50 CASING P' 1, RUNPRD CUT AND SLIP DRILL LINE. CUT 109'OF DRILL LINE. L -SERVICE TOP DRIVE AND DRAWWORKS. 8/2/2011 00:00 - 02:00 2.00 CASING P 111 RUNPRD I PULL OUT OF THE HOLE, LAYING DOWN 1 (DRILL PIPE. -FROM 4695'TO 1872'MD 02:00 - 05:00 3.00 CASING N RREP 1,872.00 RUNPRD 'SKATE RAMP BLEEDING OFF. -CALLED OUT ELECTRICIAN TO TROUBLESHOOT. -FOUND A BROKEN WIRE FOR THE SAFETY SOLENOID. -REPLACE WIRE AND FUNCTION TEST SKATE. 05:00 - 06:30 1.50 CASING P RUNPRD CONTINUE TO PULL OUT OF THE HOLE, LAYING DOWN DRILL PIPE. -FROM 1872'TO SURFACE. , -LAY DOWN LINER RUNNING TOOL I -CONFIRMED SHEAR ON DOG SUB. -RIG DOWN AND CLEAN UP FOR PERF GUN RUN. Printed 9/7/2011 4:04:43PM Orth America-ALASKA- BP Page 6 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: COM-ONSHORE(CON) Start Date:7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase 1 Description of Operations (hr) (ft) 06:30 - 07:30 1.00 CASING P RUNPRD :PRESSURE TEST 4 1/2"PRODUCTION LINER. I-RIG UP TEST EQUIPMENT. -PRESSURE TEST LINER. -TEST TO 250 PSI FOR 5 CHARTED MIN. -GOOD TEST. -IFST TO 3500 PSI FOR 30 CHARTED MIN. -SENSATOR FAILED. REMOVED AND REPLACED. I -TEST TO 3500 PSI FOR 30 CHARTED MIN. -PRESSURE LOSS FOR FIRST 15 MIN =44 PSI. -PRESSURE LOSS FOR SECOND 15 MIN= 12 PSI. -GOOD TEST. -RIG DOWN TEST EQUIPMENT -DISCUSS TEST RESULTS WITH WTL. 07:30 - 08:30 1.00 BOPSUR P RUNPRD JET BOP STACK. -PULL WEAR RING. -PICK UP A SINGLE JOINT OF 4"DRILL PIPE AND JET TOOL. -JET AND WASH BOP STACK TO CLEAN RAM CAVITIES. -LAY DOWN SINGLE JOINT AND JT TOOL. -INSTALL WEAR RING. 08:30 - 09:30 1.00 PERFOB P OTHCMP PJSM FOR PICKING UP PERFORATING GUNS. -RIG CREW, NABORS CASING CREW, 1 I SCHLUMBERGER TCP REPRESENTATIVE, I WELL SITE LEADER AND TOOLPUSHER. MAKE UP SAFETY JOINT. -RIG UP POWER TONGS AND INSPECT 2 7/8" HT PAC RUNNING EQUIPMENT. 09:30 - 21:30 12.00 PERFOB P OTHCMP. PICK UP_PERFORATING GUNS AND RUN IN I THE HOLE. 1 1 -TO 4830'MD. -MAKE UP GUNS AND 2 7/8"HT PAC PIPE. TORQUE 2 7/8"HT PAC TO 4800 FT-LBS. I -UP WEIGHT=70K LBS;DOWN WEIGHT= 66K LBS. 21:30 23:30 2.00 PERFOB P OTHCMP RIG DOWN 2 7/8"HANDLING EQUIPMENT AND RIG UP TO RUN 4"HT40 DRILL PIPE. ' I -RIG DOWN POWER TONGS AND CHANGE ELEVATORS. ! RIG DOWN SAFETY JOINT. ' I -NEED TESTED 4"FSOV ON FLOOR. I-INSTALL AIR SLIPS AND WIPING RUBBER. -HELD AAR. -DISCUSSED NEED TO HAVE A SECOND ' TESTED FOSV. -WOULD ELIMINATE THE NEED TO BREAK I DOWN THE SAFETY JOINT ON THE WAY IN THE HOLE AND THEN MAKE IT BACK UP FOR THE TRIP OUT OF THE HOLE. 23:30 - 00:00 r 0.50 PERFOB P OTHCMP RUN IN THE HOLE WITH THE PERFORATING GUNS ON 4"DRILL PIPE FROM THE DERRICK. FROM 4830'TO 6904'MD. I-UP WEIGHT=105K LBS;DOWN WEIGHT= 95K LBS. Printed 9/7/2011 4:04:43PM )rth America -ALASKA- BP Page 7 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: COM-ONSHORE(CON) Start Date: 7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12.00:OOAM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations _ (hr) (ft) 8/3/2011 00:00 03:00 f 3.00 PERFOB P OTHCMP 'RUN IN THE HOLE WITH THE PERFORATING GUNS ON 4"DRILL PIPE FROM THE DERRICK. FROM 6904'TO 14,881'MD. I-TAG UP ON THE LANDING COLLAR. -PICK UP 10'TO PUT GUNS ON DEPTH. -UP WEIGHT=175K LBS;DOWN WEIGHT= 125K LBS. 03:00 - 04:00 1.00 PERFOB P OTHCMP PERFORATE THE 4 1/2"LINER. -PJSM WITH THE RIG CREW AND THE SCHLUMBERGER TCP CREW. -PERFORM THE FIRING SEQUENCE PER SCHLUMBERGER AND FIRE THE GUNS. -OBSERVED ALL THREE SETS OF GUNS FIRE. -PERFORATING INTERVALS: -11,400'TO 11,650' 1� -12,500'TO 12,980' -13,260'TO 13,350' -14,390'TO 14,870' -OBSERVED WELL TAKING FLUID AFTER LAST SHOT. 04:00 - 06:00 2.00 PERFOB P OTHCMP PULL OUT OF THE HOLE WITH THE PERFORATING GUNS. -FROM 14,870'TO 11,220'MD. -UP WEIGHT= 155K LBS; DOWN WEIGHT= 125K LBS. -LOSS RATE WHILE PULLING OUT OF THE HOLE 18 BPH. -STOP AT 11,220'AND PERFORM A 10 MIN FLOW CHECK. -LOSS RATE=9 BPH. 06:00 - 07:00 1.00 PERFOB P OTHCMP CIRCULATE THE HOLE CLEAN. -6 BPM;1200 PSI. -CIRCULATED ONE BOTTOMS UP,346 BBLS. 07:00 - 10:30 3.50 PERFOB P OTHCMP PULL OUT OF THE HOLE WITH THE PFRFORATING GUNS LAYING DOWN 4" DRILL PIPE. -FROM 11,220'TO 3834'MD. -UP WEIGHT=70K LBS;DOWN WEIGHT= 65K LBS. 10:30 - 12:00 1.50 PERFOB P OTHCMP RUN IN THE HOLE WITH THE 4"DRILL PIPE THAT WAS STOOD BACK IN THE DERRICK. -FROM 3834'TO 8719'MD. -UP WEIGHT= 120K LBS;DOWN WEIGHT= 100K LBS. 12:00 - 15:00 3.00 PERFOB P OTHCMP PULL OUT OF THE HOLE WITH THE PERFORATING GUNS,LAYING DOWN 4" DRILL PIPE. -FROM 8719'TO 4830'MD. -UP WEIGHT=72K LBS;DOWN WEIGHT= 68K LBS. 15:00 - 16:30 1.50 PERFOB P OTHCMP MAKE UP SAFETY JOINT PRIOR TO PULLING GUNS TO THE FLOOR. -MONITOR THE WELL. -5 BPH STATIC LOSS RATE. -PJSM FOR LAYING DOWN PERFORATING GUNS. -MAKE UP A SAFETY JOINT WITH XO'S AND FOSV. Printed 9/7/2011 4:04:43PM ,rth America -ALASKA- BP Page 8 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type: COM-ONSHORE(CON) Start Date:7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: 500292094900 Active Datum: 13-27©83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:30 - 00:00 7.50 PERFOB P OTHCMP LAY DOWN 2 7/8 HT PAC PIPE AND ' PERFORATING GUNS. -FROM 4830'TO 1493'MD. -UP WEIGHT=43K LBS;DOWN WEIGHT= ! 43K LBS. 8/4/2011 00:00 - 02:30 I 2.50 PERFOB P OTHCMP LAY DOWN 2 7/8 HT PAC PIPE AND 1 1 PERFORATING GUNS. -FROM 1493'MD. -CONFIRMED THAT ALL SHOTS FIRED. 02:30 - 03:30 ' 1.00 PERFOB P OTHCMP RIG DOWN HANDLING EQUIPMENT. -RIG DOWN TONGS AND 2 7/8"PAC RUNNING 1 EQUIPMENT. CLEAN AND CLEAR RIG FLOOR. 03:30 - 07:00 3.50 RIGU P RUNCMP RIG UP TO RUN 4 V2", 12.6 LB/FT VAMTOP COMPLETION. 1 I -PREP PIPE SHED FOR RUNNING TUBING. -PULL WEAR BUSHING AND PERFORM A 1 DUMMY RUN WITH THE TUBING HANGER AND LANDING JOINT. -RIG UP POWER TONGS AND COMPENSATOR ON RIG FLOOR. 07:00 - 12:00 5.00 RUNCOM P RUNCMP RUN 4 1/2", 12.6 LB/FT,13CR-85 VAMTOP COMPLETION. -TO 4734'MD. 1 -UP WEIGHT=75K LBS;DOWN WEIGHT= 70K LBS. -OPTIMUM MAKE UP TORQUE 4400 FT-LBS. r 12:00 - 19:30 7.50 RUNCOM P RUNCMP RUN 4 1/2", 12.6 LB/FT,13CR-85 VAMTOP COMPLETION. I -FROM 4734'TO 10,082'MD. -UP WEIGHT=145K LBS;DOWN WEIGHT= I 105K LBS. ! -OPTIMUM MAKE UP TORQUE 4400 FT-LBS. l 19:30 - 22:00 2.50 RUNCOM P RUNCMP TAG LINER TOP,SPACE OUT AND LAND 4 1/2", COMPLETION. -TAG TOP OF LINER AT 10,131'. -NO-GO INSIDE PBR AT 10,142'WITH 10K LBS. I 1 I 1-SPACE OUT TUBING WITH WIRELINE ENTRY I :GUIDE AT 10,137'. I-CHANGE OUT ELEVATORS AND MAKE UP • iTUBING HANGER AND LANDING JOINT. I-LAND TUBING HANGER. -UP WEIGHT=145K LBS; DOWN WEIGHT = 105K LBS. I -FMC REPRESENTATIVE RAN IN THE LOCK DOWN SCREWS. 22:00 23:30 1.50 RUNCOM 1 P RUNCMP RIG DOWN TUBING RUNNING EQUIPMENT. I I -RIG DOWN POWER TONGS AND CHANGE OUT TOP DRIVE BALES. -TAKE ON 120 DEG F 2%KCL TO THE PITS. 23:30 - 00:00 0.50 RUNCOM P RUNCMP DISPLACE TO COMPLETION FLUIDS. -REVERSE IN 156 BBLS 120 DEG F 2%KCL. -4 BPM;245 PSI. Printed 9/7/2011 4:04:43PM lh America -ALASKA- BP Page 9 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type:COM-ONSHORE(CON) Start Date: 7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay I Site: PB DS 13 Rig Name/No.: NABORS 7ESII Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 8/5/2011 00:00 - 01:30 1.50 RUNCOM P 1 RUNCMP !CONTINUE TO DISPLACE TO COMPLETION 1 FLUIDS. -CONTINUE TO REVERSE IN 156 BBLS 120 DEC F 2%KCL. -4 BPM;245 PSI. -REVERSE IN 115 BBLS CORROSION INHIBITED 2%KCL. -4 BPM;285 PSI. I I -REVERSE IN 189 BBLS CLEAN, HEATED 2% I I KCL. -4 BPM;285 PSI. -LINE UP AND PUMP 5 BBL 2%KCL DOWN THE TUBING TO FLUSH THE RHC SEAT. 01:30 - 04:30 3.00 RUNCOM P RUNCMP SET AND TEST THE HALLIBURTON 7"x 4.5" I I 'TNT PACKER. -DROP THE 1.75"BALL AND ROD ASSEMBLY. -LAY DOWN THE LANDING JOINT AND WAIT I 10 MIN. -PRESSURE TEST THE TUBING AND SET THE HALLIBURTON'TNT'PACKER. -PRESSURE UP TO 250 PSI LOW FOR 5 CHARTED MIN. -GOOD TEST. -PRESSURE UP TO 2000 PSI TO SET PACKER. -CONTINUE TO PRESSURE UP TO 3500 IPS!FOR 5 CHARTED MIN. -PRESSURE LOSS AFTER FIRST 15 MIN. =26 PSI. -PRESSURE LOSS AFTER SECOND 15 1 I MIN. =1 PSI. -GOOD TEST. I-BLEED THE PRESSURE ON THE TUBING TO 1500 PSI. -PRESSURE UP TO TEST THE PACKER AND !ANNULUS. 1 -PRESSURE UP TO 250 PSI LOW FOR 5 !CHARTED MIN. -GOOD TEST. -PRESSURE UP TO 3500 PSI FOR 5 ,I ",. CHARTED MIN. -PRESSURE LOSS AFTER FIRST 15 MIN. =37 PSI. -PRESSURE LOSS AFTER SECOND 15 MIN.=11 PSI. -GOOD TEST. BLEED ANNULUS TO 1500 PSI. -BLEED BOTH TUBING AND ANNULUS TO 0 PSI AND HOLD. -CALL AND DISCUSS RESULTS WITH WTL. -GOOD TESTS,CONTINUE FORWARD. - PRESSURE UP ANNULUS TO 2500 PSI AND SHEAR THE DCK. -VERIFIED BY PUMPING BOTH WAYS. Printed 9/7/2011 4:04:43PM lh America -ALASKA- BP Page 10 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type:COM-ONSHORE(CON) Start Date: 7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project:Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time: 5/26/1983 12:00:00AM I Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. 'UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 05:30 1.00 BOPSUR P , RUNCMP SET AND TEST TWC. FMC REPRESENTATIVE INSTALLED TWC. -TEST TWC. -FROM BELOW TO 250/2000 PSI FOR 5 CHARTED MIN. -GOOD TEST. 1 FROM ABOVE TO 250/3500 PSI FOR 5 CHARTED MIN. -GOOD TEST. 05:30 - 12:00 6.50 BOPSUR P RUNCMP PREPARE BOP TO NIPPLE DOWN AND CHANGE OUT. -PJSM WITH RIG CREW. -BLOW DOWN ALL LINES AND SUCK OUT STACK FROM ABOVE. I -REMOVE RAMS FROM CAVITIES PRIOR TO CHANGING BOP STACK. -CLEAN AND INSPECT RAMS. • -PREP BOP STACK FOR CHANGE OUT. 12:00 - 14:00 2.00BOPSUR P I RUNCMP NIPPLE DOWN BOP STACK. I -PJSM WITH RIG CREW. -NIPPLE DOWN BOP STACK AND SET BACK J ON PEDESTAL IN CELLAR. 14:00 - 16:00 2.00 WHSUR P RUNCMP NIPPLE UP ADAPTER FLANGE AND TREE. -PJSM WITH RIG CREW. -CLEAN OFF THE TOP OF THE TUBING HANGER. I -NIPPLE UP THE 13 5/8"X 4 1/16"5K I ADAPTER FLANGE. -NIPPLE UP THE 4 1/16"5K TREE. 16:00 - 21:00 5.00 WHSUR P I RUNCMP PRESSURE TEST THE ADAPTER FLANGE AND TREE. -PRESSURE TEST THE ADAPTER FLANGE PER FMC REPRESENTATIVE. -250 PSI LOW FOR 5 CHARTED MIN. I 1 -GOOD TEST. -5000 PSI FOR 30 CHARTED MIN. -GOOD TEST. -PRESSURE TEST THE TREE. -250 PSI LOW FOR 5 CHARTED MIN. -GOOD TEST. 5000 PSI FOR 30 CHARTED MIN. -HAD TO WORK THE VALVES WITH PRESSURE SEVERAL TIMES. -GOOD TEST. 21:00 - 22:00 1.00 WHSUR P RUNCMP PULL THE TWC. -PJSM WIHT RIG CREW AND DSM LUBRICATOR CREW. ,-PICK UP LUBRICATOR AND MAKE UP TO I TREE. PRESSURE TEST LUBRICATOR TO 250/3500 I PSI FOR 5 MIN. -GOOD TEST. -PULL TWC AND LAY DOWN. Printed 9/7/2011 4:04:43PM rth America -ALASKA- BP Page 11 of 11 Operation Summary Report Common Well Name: 13-27 AFE No Event Type:COM-ONSHORE(CON) Start Date: 7/1/2011 End Date: X3-00XTY-C(1,884,430.96) Project: Prudhoe Bay Site: PB DS 13 Rig Name/No.: NABORS 7ES Spud Date/Time:5/26/1983 12:00:00AM Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI:500292094900 Active Datum: 13-27 @83.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth I Phase Description of Operations (hr) (ft) 22:00 - 00:00 2.00 ! WHSUR P I RUNCMP TRIG UP AND FREEZE PROTECT. PJSM WITH RIG CREW AND LITTLE RED HOT OIL SERVICE CREW. -RIG UP LINES AND PRESSURE TEST. -PRESSURE TEST LINES 250/3500 PSI FOR 5 MIN. -GOOD TEST. -BEGIN PUMPING DIESEL FREEZE PROTECT DOWN THE IA. 1.25 BPM ;1030 PSI. 8/6/2011 00:00 - 04:00 4.00 WHSUR P RUNCMP CONTINUE TO FREEZE PROTECT. -BEGIN PUMPING DIESEL FREEZE PROTECT DOWN THE IA. -1.25 BPM;1030 PSI. -PRESSURE INCREASED,HAD TO SLOW PUMP RATE. -0.5 BPM;2500 PSI. 04:00 - 06:00 2.00 WHSUR I P RUNCMP ALLOW FREEZE PROTECT TO U-TUBE. -RIG DOWN LITTLE RED SERVICES. -RIG UP A JUMPER LINE FROM THE IA TO THE TUBING. -ALLOW DIESEL TO U-TUBE TO 2200'ON .BOTH IA AND TUBING. 06:00 - 08:00 2.00 WHSUR P RUNCMP INSTALL BPV. -PJSM WITH RIG CREW AND DSM CREW. -MAKE UP LUBRICATOR AND PRESSURE TEST. -250/3500 PSI FOR 5 CHARTED MIN EACH. -GOOD TEST. -INSTALL BPV. -TEST BPV FROM BELOW 250/1000 PSI FOR 10 CHARTED MIN. -GOOD TEST. -RIG DOWN LUBRICATOR. 08:00 - 09:00 1.00 WHSUR P RUNCMP SECURE CELLAR AND TREE AND PREPARE TO RDMO TO R-12A. Printed 9/7/2011 4:04:43PM D MT KB�R 3k ! V � / /2013 Schlumberger Trans#:6501 OCT 2 5 263 Drilling & Measurements 2\\-.per. MWD/LWD Log Product Delivery 2,34 t A0000 Customer: BP Exploration(Alaska)Inc. Dispatched To: Makana Bender Well No: 13-27B Date Dispatched: 24-Oct-13 Job#: 10AKA0145 Dispatched By: Stephanie Pacillo Well/ Product Hardcopy Digital Copy E-Delivery Date Final Field Data 2 in MD 1 1 5 in MD 1 1 2inTVD 1 1 5 in TVD 1 1 Survey 1 1 LAS Data 1 CD 1 Please sign and email a copy to: Please sign and email/fax a copy to: Analisa Stecierc bp.com spacilloAslb.com Stephanie Pacillo Analisa Steger Fax:907-561-8317 Received By: 6-ae-el-t O 35 055503-1-! 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Dispatched To: Makana Bender Well No: Dispatched:13-27B PB1 Date Dis atched: 24-Oct-13 Job#: 10AKA0145 Dispatched By: Stephanie Pacillo Well/ Product Hardcopy Digital Copy E-Delivery Date Final Field Data 2 in MD 1 1 5 in MD 1 1 2 in TVD 1 1 5 in TVD 1 1 Survey 1 1 LAS Data 1 CD 1 Please sign and email a copy to: Please sign and email/fax a copy to: Analisa Steger@bp.com spacillo@slb.com Stephanie Pacillo Analisa' Steger Fax:907-561-8317// Received By: / 46ae.%Geeq• O -1 - ) 0 p O ; g)ON ND O D 7 p 0 O ry q-9? -. A " ?3 ixn - = 3O co cnN m m og< $ ° CTgaIm " m N n 0QD CA2 r. 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ELEV= 83' I I BF.ELEV= 1849' —19-5/8"EXT CSG PKR, ID=8.700" KOP= 2800' Max Angle= 97°@ 10872' 20"CONDUCTOR, — 100'? 1870' -1874' H 9-5/8"BKR CSG PATCH,ID=9.610 Datum MD= 10251' 91.5#, H-40, Datum TVD= 8800'SS ID=19.124" ' ' 2007' —4-1/2"HES X NIP, ID=3.813" 9-5/8"CSG,47#,L-80 HYD 563, ID=8.681" — 1827' 13-3/8"CSG,72#,L-80 BUTT, ID=12.347" — 2634' 9-5/8"WHIPSTOCK(07/02/11) — 3400' 3248' —9-5/8"X 7"BKR ZXP LTP w/11'PER, &BKR FLEX LOCK HGR,ID=6.290" 9-5/8"CSG,47#, L-80 BTC;ID=8.681" — —3421.,„„,. 9-5/8” MILLOUT WINDOW(13-27B) 3404'-3421' 9-5/8"EZSV(07/01/11) — 3423' *\ GAS LIFT MANDRELS MD TVD DEV TYPE VLV LATCH PORT DATE 3814 3774 IP 23 KBG2 DCK BEK 0 08/04/11 Minimum ID = 3.725" @ 10124' 6491 5838 r43 KBG2 DMY BK 0 08/04/11 4-1/2" HES XN NIPPLE 7976 6953 X41 KBG2 DMY BK 0 08/04/11 9085 7844 r 25 KBG2 DMY BK 0 08/04/11 9783 8472 F 29 KBG2 DMY BK 0 08/04/11 ' ' 9984' —4-1/2"HES X NIP, ID=3.813" z X 10013' —7"X 4-1/2"HES TNT PKR, ID=3.856" 10048' —I4-1/2"HES X NIP, ID=3.813" I 10124' —4-1/2"HES XN NIP,ID=3.725" TOP OF 4-1/2""LNR —1 10131' I 10131' —17"X 5"BKR HRD-E ZXPN LTP w/PBR,ID=4.190" 4-1/2"TBG, 12.6#, 13CR-85 VAM TOP, H 10137' 10137' —4-1/2"WLEG,ID=3.958" .0152 bpf, ID.--3.958" —J ELMD TT NOT LOGGED 7"LNR,26#,L-80 VAM TOP,.0383 bpf, ID=6.276" H 10286' ‘ I10147' —17"X 5"BKR FLEX LOCK LNR HGR,ID=4.210" I \ 10157' —5"X 4-1/2"XO, ID=3.920" PERFORATION SUMMARY k REF LOG 999299 ANGLE AT TOP PERF:93°@ 11400' Note:Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-7/8" 6 11400-11650 0 08/03/11 2-7/8" 6 12500- 12980 0 08/03/11 2-7/8" 6 13260- 13350 0 08/03/11 2-7/8" 6 14390-14870 0 08/03/11 PBTD H 14882' .•♦•♦• 4-1/2"LNR, 12.6#, 13CR-85 VAM TOP, H 14968' �•�•••' .0152 bpf,ID=3.958" DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 07/29/83 ORIGINAL COMPLETION WELL: 13-27B 06/03/97 N3S CTD SIDETRACK(13-27A) PERMIT No: 2110480 01/21/10 D16 RWO API No: 50-029-20949-02 08/06/11 N7ES SIDETRACK(13-27B) SEC 14,T1 ON,R14E,526'FSL&1185'FEL 08/12/11 PJC DRLG DRAFT CORRECTIONS BP Exploration(Alaska) bp4E2 Date:08-19-2011 Igej Transmittal Number: 93204 BPXA iiiNt DA 1A TRANSMITTAL Enclosed are the materials listed below. If you have any questions,please contact Nita Summerhays at(907)564-4035 Delivery Contents Top Bottom SW Name Date Company Run Depth Depth Description HALLIBURTON 13-27B 07-16-2011 FOR BPXA END OF WELL REPORT "' HALLIBURTON FINAL DATA ASCII LISTING 1(47 t� I 13-27B 07-16-2011 FOR BPXA ON CD-ROM +i SET OF FINAL LOGS CONTAINING: 1 -2" FORMATION EVALUATION MD 1 -2" DRILLING ENGINEERING MD 1 -2" GAS RATIO MD'"" 1 -2" FORMATION EVALUATION TVD '--- HALLIBURTON 1 -5" FORMATION 13-27B 07-16-2011 FOR BPXA EVALUATION MD — sritc-v-4 Please Sign and Return one copy of this transmittal. Thank You, Nita Summerhays Petrotechnical Data Center ConocoPhillips Sandy Lemke Exxon File Room DNR Corazon Manaois State of Alaska Christine Shartzer Petrotechnical Data Center LR2-1 900 E.Benson Blvd.PO Box 196612 Anchorage,AK 99519-6612 acc -- � `i3 Alaska Oil &Gas Conservation Commission (AOGCC) Blow Out Preventer Equipment(BOPE) Use Reporting Requirements September 1, 2010 r� Scope a\,\ -vLvK The purpose of this document is to ensure timely reporting to the AOGCC of any BOPE use to prevent the flow of fluids from a well. This applies to the following operations: AOGCC Regulation Covered Operations 20 AAC 25.035 Primary drilling and completion Drilling and completion with a rig 20 AAC 25.036 Through tubing drilling and Coiled tubing or small diameter pipe drilling and completion completion 20 AAC 25.285 Tubing workover Workover with a rig (tree removed) 20 AAC 25.286 Work string service operations Through tubing operations with coiled tubing, small diameter drill pipe or tubing with (tree not removed) The use of BOPE for operational reasons including but not limited to pressure testing or reverse circulating does not require reporting to the AOGCC. If operational use of the BOPE compromises its effectiveness, the BOPE component used must be function pressure tested prior to the next well bore entry. Reporting Requirements 1). The Well Site Leader will notify the appropriate Field Superintendent as soon as possible (after the well is shut in) of any BOPE use to prevent the flow of fluids from a well. 2). The appropriate ADW Field Superintendent will then notify the AOGCC North Slope Inspectors by phone (907-659-2714) or pager(907-659-3607)within 24 hours of the incident with a brief description of any instance of BOPE use to prevent the flow of fluids from a well. 3). The ADW Field Superintendent will email the Blow Out Preventer Equipment (BOPE) Use Report to the AOGCC North Slope Inspectors (doa.aogcc.prudhoe.bay(c�alaska.gov) and CC list within 24 hours of the incident. 4). The Wellsite Leader shall generate a Traction Report and attach the completed BOPE Usage Report. AOGCC Regulations The following regulations describe the requirements for testing BOPE after use and reporting any BOPE use to prevent the flow of fluids from a well for primary drilling and completion operations. 20 AAC 25.035. Secondary well control for primary drilling and completion: blowout prevention equipment and diverter requirements (e)(10)(C) if any BOP equipment components have been used for well control or other equivalent purpose, or when routine use of the equipment may have compromised its effectiveness, the components used must be function pressure-tested, before the next wellbore entry, to the required working pressure specified in the approved Permit to Drill, using a non-compressible fluid, except that an annular type preventer need not be tested to more than 50 percent of its rated working pressure; (e) (11)the operator shall report to the commission within 24 hours any instance of BOPE use to prevent the flow of fluids from a well. BOPE Usage Report for AOGCC Rev 1 September 1, 2010 HRE 1 Similar regulatory language exists for the other operations listed above and can be found on the AOGCC web page http://doa.alaska.gov/ogc/. 20 AAC 25.036(d)(4)and (g)Secondary well control for thru-tubing drilling and completion 20 AAC 25.285(f)(2)and (8)Secondary well control for tubing workover operations 20 AAC 25.286 (e)(1)and (8)Well Control requirements for workstring service operations Document Control This document with attached report form will be included in Site Technical Practice CRT-AK-10-10: Criteria for Well Control. BOPE Usage Report for AOGCC Rev 1 September 1, 2010 HRE 2 Blow Out Preventer Equipment ( BOPE ) Usage Report to the AOGCC The purpose of this document is to ensure timely reporting to the AOGCC of any BOPE use to prevent the flow of fluids from a well. Field Superintendent Name: Jim Willingham Wellsite Leader Name: Brett Anderson Contact Number: 907-659-5329 Contact Number: 907-659-4835 Traction Number: Well Location/Name & Rig Name: PBU 13-27B/Nabors 7ES Permit To Drill (PTD) Number: 1961210 Date and Time of Incident: 07/08/2011 01:30 Original Scope of Work: Drill 8 '/2" intermediate hole from window at 3404' to 10,263'. Operational Description Leading up to Well Control Event: Drilling ahead in 8 '/2" intermediate hole. BOPE Used and Reason: Annular preventer was closed. On bottom drilling, driller picked up to flow check well. Noticed some flo' shut in well. SIDPP & SICP = 10 psi. Bled DP to 0 psi. Monitored 5 min, no pressure increase. Opend to gas buster for 5 min. no flow. Closed choke and monitored 5 min. no pressure increases. Well bore breathing has previously been experienced in this hole section. Opened Annular and continued drilling ahead. Is a BOPE Test Required after use (Yes/ No): If no, why? Yes. 24 hour notice required to NS AOGCC Inspectors prior to testing BOPE components. Plan Forward: Drill to TD. Condition hole for liner run. POH and test BOPE. Additional Comments: Email to AOGCC North Slope Inspectors within 24 hours of the incident: doa.aogcc.prudhoe.bay(a�alaska.gov Email CC List BP WSL Harry Engel Wells Team Leader Jeff Kilfoyle Engineering Team Leader Operations Drilling Engineer-Well File Wells Operations Manager Drilling&Completions Engineer Manager Wells Intervention Manager BOPE Usage Report for AOGCC Rev 1 September 1, 2010 HRE 3 SlialTE OF ALASKA SEAN PARNELL,GOVERNOR ALASKA OIL AND GAS 333 W.7th AVENUE,SUITE 100 CONSERVATION COMMISSION ANCHORAGE,ALASKA 99501-3539 PHONE (907)279-1433 FAX (907)276-7542 John Egbejimba Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU 13-27B BP Exploration (Alaska), Inc. Permit No: 211-048 Surface Location: 4754' FNL, 1185' FEL, SEC. 14, T1ON, R14E, UM Bottomhole Location: 1021' FNL, 372' FEL, SEC. 26, T1ON, R14E, UM Dear Mr. Egbejimba: Enclosed is the approved application for permit to re-drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the 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, aniel T. Seamount, Jr. f" Chair DATED this day of April, 2011. cc: Department of Fish 85 Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA dr,_,/ ALAr ' OIL AND GAS CONSERVATION COMM 'ION MAR 3 0 20114`' PERMIT TO DRILL �,.,`�., 20 AAC 25.005 tl*aML 84as Chi,commission 1 a.Type of work: lb.Proposed Well Class: IN Development Oil 0 Service-Winj 0 Single Zone 1c. Specify if ibisp for: ❑ Drill ®Redrill 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone 0 Coalbed Gai-MIMMydrates ❑ Re-Entry 0 Exploratory 0 Service-WAG 0 Service-Disp 0 Shale Gas 2. Operator Name: 5.Bond: ® Blanket 0 Single Well 11. Well Name and Number: BP Exploration(Alaska)Inc. Bond No. 6194193 PBU 13-27B 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O.Box 196612,Anchorage,Alaska 99519-6612 MD 1496T ND 9068' Prudhoe Bay Field/Prudhoe 4a. Location of Well(Govemmental Section): 7. Property Designation(Lease Number): Bay Oil Pool Surface: ADL 028315&028316 4754'FNL, 1185'FEL,SEC. 14,T1ON, R14E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 3224'FNL,5270'FEL,SEC.24,T1ON, R14E, UM May 15,2011 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 1021'FNL,372'FEL, SEC.26,T1ON,R14E, UM 2560 4253' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: 83' feet 15.Distance to Nearest Well Open Surface: x- 686068 y-5930564 Zone- ASP4 GL Elevation above MSL: 49.63' feet to Same Pool: 1135' 16.Deviated Wells: Kickoff Depth: 3400 feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 93 degrees Downhole: 3866 Surface: 3100 18. Casing Program: Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 8-1/2" 7" 26# L-80 VamTop HC 7019' 3250' 3238' 10269' 8883' 169 sx 15.8 DDG Class'G' 6-1/8" 4-1/2' 12.6# 13Cr-80 VamTop 4847' 10119' 8883' 14967', 9068' .571 sx 15.8 DDG Class'G' 19. PRESENT WELL CONDITION SUMMARY(To be completed for Redrill and Re-entry Operations) Total Depth MD(ft): Total Depth TVD(ft): Plugs(measured): Effective Depth MD(ft): Effective Depth ND(ft): Junk(measured): 12672' 9057' 10723'(top of cement) 12640' 9058' 12626' Casing Length Size Cement Volume MD ND Conductor/Structural 80' 16" 2115#Poleset 80' 80' Surface 2633' 13-3/8" 2700 sx CS III/400 sx CS II 2633' 2633' Intermediate 10322' 9-5/8" 500 sx Class'G'/300 sx CS I 10322' 8905' Production Liner 415' 7" 265 sx Class'G' 10038'-10453' 8648'-9023' Liner 2628' 2-7/8" 102 sx Class'G' 10044'-12672' 8654'-9057' Scab Liner 5986' 7" 847 sx Class'G' 3949'-9935' , 3888'-8555' Perforation Depth MD(ft): 11035'-12630'(cemented in) Perforation Depth ND(ft): 9058'-9058'(cemented in) 20.Attachments: 0 Property Plat ®BOP Sketch ®Drilling Program 0 Time vs Depth Plot 0 Shallow Hazard Analysis ®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 Jacob Thompson,564-5579 Printed Name John Egbejimba Title Engineering Team Leader I'M Prepared By Name/Number Signature . C Phone 564-5859 Date 3 /3'O /) Elizabeth Barker,564-5674 Commission Use Only Permit To Drill A um . Permit All t : See cover letter for Number: 0�//0*57 50-029-20949-02-00 I other requirements Conditions of Approval: If box is checked,well may not be used to explore for,test,or produce coalbed m,-et/hs e,gas hydrates,or gas contained shales:�Ild" Other: *3S� ps�" 130 el TAT�^T—' Samples Req'd: 0 s [j(No Mud Log Req'd: ❑�s LN'No *Z co , s'� �4 h n w!ti r TZ..:> (Mcg..) H2S Measures: (R Yes 0 No Directional Survey Req'd: LMS Yes 0 No 4---1(0/ dio --ir Or _-_---- /- APPROVED BY THE COMMISSION Date ,COMMISSIONER Form 10-401 Revised 07/2009 This permit is valid . months from the date of approval(20 AAC 25.005(g)) Submit In Duplicate ORIGINAL 74_ Ys. �, ,, `,/,� A To: Alaska Oil & Gas Conservation Commission, Chairperson From: Jacob Thompson, ODE Date: March 29, 2011 Re: 13-27B Sidetrack Permit to Drill The sidetrack plan for the 13-27B includes the following: during the pre-rig operations laying cement on top of the 2-7/8" liner and cutting the tubing at approximately 300' below the 9-5/8" window exit. The whipstock exit out of the 9-5/8" casing is planed will be done using an 8-1/2" milling assembly during rig operations. The intermediate hole will be drilled to the top of the Sag River with an 8-1/2" BHA where a 7" liner will be run V and cemented 1,000' above the 7" shoe with 15.8 ppg glass G tail cement. The production hole will be a horizontal drilled with a 6-1/8" BHA in Zone 4 of the Ivishak.' The liner will be a 4-1/2" 13Cr liner and the tubing will be 4-1/2" 13Cr, tied into the top of the production liner. Please note the following Well Summary as detailed on the next few pages: 13-27B Permit to Drill Application Page 1 Planned Well Summary Well Horizontal Tar et Well 13-27B Type Sidetrack Objective lvishak Zn4 Producer Estimated Start May 15s`, 2011 Time to Complete: 31.5 Date: Surface Northing Easting Offsets TRS Location 5,930,564 686,068 4754' FNL 1184' FEL 10N, 14E, 14 Northing Easting Offsets TRS - Target Location 5,926,845 687,358 3223' FNL 5269' FEL 10N, 14E, 24 Bottom Northing Easting Offsets TRS Location 5,923,760 687,055 1021' FNL / 371' FEL 10N, 14E, 26 Planned 3,400' MD / 3,340' TVD Planned TD: 14,966'MD / 9,068' TVD KOP: - Rig: Doyon 141 / GL/RT: 49.63'/28.5 RTE: 78.13' Directional — Schlumberger 13-27B (P13b) Proposal KOP: 3,400' MD Maximum Hole Angle: -42° in the 8-1/2" intermediate section (-18°@ KOP) -93° in the 6" production section Close Approach Wells: 13-27A Fails major risk in the production section Survey Program: MWD Standard + IFR + Multi Station Nearest Property Line: 4253' Nearest Well within Pool: 1135' (13-10) Contacts Name Phone# E-mail Drilling Engineer Jacob Thompson 564-5579 Jacob.Thompson@bp.com Geologist Coal Abel 564-5576 cole.abel@bp.com Pad Engineer Megan Kimmet 564-5851 megan.kimmeta,,bp.com 13-27B Permit to Drill Application Page 2 Formation Markers 13-27B k„ased on SOR) Estimated Depth Hydrocarbon Estimated Pore Pressure Formation Formation Uncertainty Bearing Pore Uncertainty Tops(TVDss) (+/-TVD ft) (yes/no) Pressure (EMW+/-ppg) (EMW PPG) SV4 -2,535.0 0' No 8.40 SV3 -3,175.0 0' No 8.40 KOP @ 3400'MD SV2 -3,380.0 10' No 8.40 SV1 -3,792.0 20' No 8.40 UG4 -4,457.0 20' No 9.80 0.20 UG3 -4,651.0 30' No 9.80 0.20 UG1 -5,297.0 50' No 8.40 WS2 -5,895.0 50' No 8.40 WS1 -6,145.0 50' No 8.40 CM3 -6,360.0 50' No 9.62 CM2 -6,978.0 50' No 9.62 CM1 -7,730.0 50' No 9.62 THRZ -8,104.0 50' No 9.62 LCU/Top Kingak -8,317.0 35' No 9.62 TJD -8,412.0 35' No 9.62 TJB -8,605.0 35' No 9.62 TSGR/Intermediate Csg Pt. -8,805.0 35' Yes 7.24 0.40 TSHU -8,826.0 35' Yes 7.24 0.40 TSAD/46P -8,896.0 35' Yes 7.24 0.40 45P -8,919.0 35' Yes 7.24 0.40 44P -8,948.0 35' Yes 7.24 0.40 Top HO/T -8,984.0 10' Yes 7.24 0.40 43P -9,002.0 35' Yes 7.24 0.40 OOWC -9,010.0 10' No 7.24 0.40 Invert @ 10600(approx) 7.24 0.40 OOWC -9,010.0 10' No 7.24 0.40 43P -9,009.0 35' Yes 7.24 0.40 Top HO/T -8,990.0 10' Yes 7.24 0.40 44P -8,965.0 20' Yes 7.24 0.40 45P -8,948.0 20' Yes 7.24 0.40 13-27B Permit to Drill Application Page 3 Casing/Tubing Program Hole Csg/ Wt/Ft Grade Conn Burst Collaps Length Top Bottom Size Tbg O.D. (psi) e (psi) MD/TVD MD/TVD VAM 8-'/2" 7" 26.0# L-80 TOP 7,240 5,410 7,020' 3250'/3382' 10,269'/8,883' HC VAM 6.125" 4 '/2" 12.6# 13Cr-80 TOP 8,430 7,500 4,847' 10,119'/8,883' 14,966'/9,068' VAM Tubing 4 '/2" 12.6# 13Cr 80 TOP 8,430 7,500 10,269' Surface 10,269'/8,883' Mud Program Whipstock Millin i-THRZ Mud Properties: LSND 8.5" hole section Depth Interval Density (ppg) PV YP API FL HTHP FL MBT PH 3,400'-9,475' 10.0 10-25 30 - 32 6.0—8.0 N/C <20 9.0-10.0 THRZ-TKNG Mud Properties: LSND 8-1/2" hole section Depth Interval Density (ppg) PV YP API FL HTHP FL MBT PH 9,475'-10,269' 10-10.2 10-25 22-30 4.0—6.0 <10 <20 9.0-10.0 Production Mud Properties: FLOPRO SF Reservoir Drill-in Fluid 6.125" hole section Depth Interval Density (ppg) PV YP LSVR API Fl pH MBT 10,269'-14,966' 8.5—9.0 6-12 22 -28 >20,000 6.0-8.0 9.0-9.5 < 4 Logging Program 8-1/2" Intermediate: Mud loggers required Drilling: DIR/GR/Res/PWD/ADN/ACAL Open Hole: None Cased Hole: None 6-1/2" Production: Mud loggers required Drilling: Dir/GR/Res/ PWD Open Hole: None Cased Hole: None 13-27B Permit to Drill Application Page 4 Cement Program Casing Size: 7" 26#, L-80,VAM TOP HC Intermediate Liner Basis: Lead: None Tail: 1,000' above the shoe Tail TOC: 9,269' Total Cement Spacer 30 bbls of Viscosified Spacer weighted to 10.5 ppg (Mud Push II) Volume: Lead N/A Tail 35bbls,/5.8 lb/gal Class G + adds— 1.16 cuft/sk /G' sr Temp BHST= 198° F, BHCT TBD by Schlumberger Casing Size: 4.5" 12.6#, 13Cr-80,VAM TOP Production Liner Basis: Lead: None Tail: 200' above the top of the liner Tail TOC: 10, 119' Total Cement Spacer 25 bbls of Viscosified Spacer weighted to 11.5 ppg (Mud Push II) Volume: Lead N/A Tail 118 bbls, 15.8 lb/gal Class G + adds— 1.16 cuft/sk S-7/ sic Temp BHST=220° F, BHCT TBD by Schlumberger Intermediate Interval Maximum anticipated BHP 3,866 psi @ 7,730' TVDss (9.62 ppg EMW) Maximum surface pressure 3,100 psi (based upon pressure at 7730 -0.10 psi/ft gas gradient to surface) Kick tolerance A LOT of 12.7-13.9 ppg yields 25 bbl-50 bbl kick tolerance Planned BOP test pressure Rams test to 3,500 psi/250 psi. Annular test to 3,500psi/250 psi 9-5/8" Casing Test/7" Liner 3500 psi surface pressure Integrity Test—8-1/2" hole LOT after drilling 20' from middle of window 7" Casing The VBRs will be changed to 7" rams to accommodate the 7" drilling liner Production Interval Maximum anticipated BHP 3,392 psi @ 9, 010' TVDss (7.24 ppg EMW) Maximum surface pressure 2,491 psi (based upon pressure at TD -0.10 psi/ft gas gradient to surface) Kick tolerance Infinite with a 8.5 ppg mud and 9 ppg FIT/LOT Planned BOP test pressure Rams test to 3,500 psi/250 psi. Annular test to 3,500 psi/250 psi Integrity Test—6-1/8" hole FIT after drilling 20' of new hole Planned drill in/completion 8.5 ppg FlowPro/seawater 8.5 and 6.8 ppg Diesel (freeze protect) fluids 13-27B Permit to Drill Application Page 5 Surface and Anti-Collision Issues Surface Shut-in Wells: There are no wells requiring surface shut-in in order to move onto the well. At surface 13-27 is approximately 120' away from 13-28. Close Approach Shut-in Wells: The 13-27B well path passes major risk for all nearby wells, with the exception of the 13-27A lateral. 13-27A has been P&A. A TCR has been completed and the well passed to a 1:10 minor risk. Hydrogen Sulfide A. Standard Operating Procedures for H2S precautions should be followed at all times. DS13 wells are expected to have H25 levels in the 0 to 300 ppm. Recent H2S data from the pad is as follows: • Date of Well Name H2S Level Reading Parent Well 13-27A 20 ppm 4/10/2002 #1 Closest SHL Well H2S Level 13-28 0 ppm 2/5/1993 #2 Closest SHL Well H2S Level 13-11 40 ppm 2/5/2005 #1 Closest BHL Well H2S Level 13-10 16 ppm 5/12/1994 #2 Closest BHL Well I-12S Level 13-28 0 ppm 2/5/1993 Max. Recorded H2S on Pad/Facility 13-02A 300 ppm 6/18/1990 / Other Relevant 112S Data DS 13 is an H2S pad. Faults The projected wellplan for 13-27B is expected to cross 5 faults one in the Coielville and four in the Ivishak. For the fault in the Coielville losses are not expected. However, there is a moderate to high chance that there will be losses while drilling the Ivishak formation. It is important to ensure that we have ample fluid and LCM on location while drilling the production section of this well. All actions taken to stop losses should follow the loss circulation decision tree. Well Control Well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind/shear rams, and annular preventer will be installed and are capable of handling the maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to 3,500 psi. The BOP test frequency for 13-27B will be 14 days during drilling phase, and 7 days during the decompletion phase. Disposal • No annular injection in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS-04. Any metal cuttings will be sent to the North Slope Borough. • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS-04 for injection. Haul all Class I waste to Pad 3 for disposal. 13-27B Permit to Drill Application Page 6 II Drilling Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control The Ivishak in this fault block is expected to be 7.24 ppg EMW. This pressure is estimated based on offset well pressures. 3500 psi test pressure is in accordance with the RP for Prudhoe production well casing tests for producing wells. II. Lost Circulation One fault will be crossed in the intermediate section at —8,300' TVDss. The lost circulation potential for this fault is low. Five faults will be encountered in the production interval, as well as a graben being paralleled. III. Kick Tolerance/Integrity Testing Test Point Test Depth Kick EMW (lb/gal) Tolerance Test type 9-%" window 20-ft minimum from the 9-%" 50bb1 13.9 window LOT 9-%" window 20-ft minimum from the 9-%" 25bb1 12.7 window LOT 7" shoe 20-ft minimum from the 7" Infinite 9.0 shoe FIT IV. Hydrogen Sulfide Standard Operating Procedures for H2S should be followed at all times. DS 13 wells are expected to have H25 levels in the 0 to 300 ppm range. Recent H2S data from the pad is as follows: (5) H2S Data Well Name H2S Level Reading Date Parent Well lit sidetrack) r 13-27A 20 ppm 4/10/2002 1 Closest SHL Well H2S Level 13-28 0 ppm 2/5/1993 a2 Closest SHL Well H2S Level 13-11 40 ppm 2/5/2005 a1 Closest BHL Well H2S Level 13-10 16 ppm 5/12/1994 a2 Closest BHL Well H2S Level 13-28 0 ppm 2/5/1993 Max.Recorded H2S on Pad Facility 13-02A 300 ppm 6/18/1990 Other Relevant H2S Data DS 13 is an H2S pad. IH2S alarms from rigs.etc.1 L + VII. Anti-Collision Issues 13-27B fails major risk in the production section against 13-27A, but 13-27A has been cemented off and has passed a minor risk to 1:10. VIII. Borehole Breakout One of the objectives is to determine the principal stress directions in the Kingak shales. This will require drilling the Kingak at a low enough mud weight to allow for wellbore instability. Constantly monitor cuttings, PU and SO weights, and torque values to monitor and react to wellbore instability. At no point does the data collection overrule the safe and compliant delivery of the entire weillbore. CONSULT THE DS13 PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION 15-27A Permit to Drill Application Page 7 13-27B Operational Summary Pre-riq prep work: 1. PPOT-T and IC 2. Lay in cement plug 3. MIT-T to 2500 psi. MIT-OA to 2000 psi 4. Circ out well 5. Jet cut tubing -3600' MD 6. Set BPV Proposed Procedure: 1. MIRU. 2. MIT - OA 2000 psi for 30 minutes (begin monitoring OA). 3. Pull BPV. Circulate out freeze protection and circulate well to seawater. Set a TWC and test from above to 3500 psi for 30 minutes and from below to 2000psi for 30 minutes 4. Nipple down tree. Nipple up and test BOPE to 3,500psi. Pull TWC. 5. RU and pull the 4-1/2" tubing from the pre-rig jet cut at -3,600' MD. 6. Pick up 9-5/8" full gauge String Mills. RIH to tubing stub at -3,600' MD, ensure casing is clean. POOH. LD scraper assembly. PO 7. RU E-line and RIH w/ CCL and EZSV for 47# casing, and set at -3,400'. (' 8. Pressure test the EZSV to 3500 psi for 30 minutes and chart. 9. PU 9-5/8" whipstock, bottom trip anchor and 8.5" window milling assembly (to A include full gauge string mills). RIH to the top of the EZSV. Orient and set the whipstock. Swap the well over to 10�-,pg fresh water LSND milling fluid. 10. Mill a window in the 9-5/8" casing at -3400' MD' plus 20' of formation. 11. Perform a FIT/LOT. POOH for drilling BHA. - V 12. MU an 8-1/2" drilling BHA with 2 ghost reamers DIR/GR/RES/ACAL/ALD and RIH. Kick off and drill 8-1/2" intermediate interval to 7" casing point at the top of Tf;s the Sag River CBU a minimum of 2 times, mad pass to TKG on short trip upper prD ghost reamer pulls inside the window, RIH to bottom, circulate well clean and POOH. 13. Change out upper 3.5" x 6" VBR to 7" CSG rams and test to 3500psi. 14. Run and partially cement a 7", 26#, L-80 drilling liner in the 8-1/2" wellbore with a minimum of 150' overlap into the 9-5/8" casing. Set hanger / liner top packer and displace cement with mud. POOH. 15. Change out upper 7" CSG rams to 3.5" x 6" VBR and test to 3500psi. 16. MU a 6-%8" DIR/GR/RES drilling assembly. P/U additional 4" drill pipe as required to TD the well and RIH to top of the float collar and test the casing to 3,500 psi for 30" minutes. 17. Displace the well to 8.5 ppg Flo-Pro. • 18. Drill out shoe and 20' of new formation and perform an LOT. 19. Drill build section, per directional plan. POOH for PDC assembly 20. MU a 6-1/8" BHA with PDC bit and DIR/GR/RES/GABI. RIH and drill ahead, per directional proposal and rig site geologist, to TD. 21. CBU 2 times minimum at TD. POOH to the shoe, MAD passing as required by geologist. Open circ sub and circulate the well clean at the shoe and POOH. 22. Run and a cement a 4-1/2", 12.6#, 13CR-85 liner, VAM TOP liner from TD to 150' inside the 7" shoe. Set the liner top packer and displace the well to seawater. 17-12A Permit to Drill Application Page 8 23. After cement reaches -1000 psi compressive strength, pressure test well to 3500 psi for 30 minutes and chart. Spot perf pill in LNR and POOH. 24. RIH with DPC perf guns. Peri intervals to be determined from LWD logs. Plan to perforate overbalance. POOH, LD DP and perf guns 25. Run the 4-1/2", 12.6#, 13Cr-85 completion tying into the 4-1/2" liner top. 26. Drop ball & rod and set the production packer and individually test the tubing to 3,500 psi and annulus to 3,500 psi for 30 minutes each. 27. Shear valve and confirm circulation. 28. Set and test a TWC to 2000psi. 29. ND BOPE. NU and test the tree to 5,000 psi 30. Pull TWC. Freeze protect the well to 2,200' TVD. 31. Set a BPV. 32. RDMO. Post-Riq Work: 1. Pull BPV. 2. Pull ball and rod / RHC plug. Set generic GLV design. 3. Install wellhouse, instrumentation, and flowlines. (S-Riser modification WILL be required.) 4. Set SSSV post well 17-12A Permit to Drill Application Page 9 TREE= CIW WELLHEAD FMC SA' NOTES:WELL ANGLE>70°@ 10535'. ACTUATOR= BAKER C 13-2 7 A ***C...-JME TBG&NIPPLES*** KB. ELEV 83' BF. ELEV = KOP= 2800' I �1ii I 2036' -4-1/2"HES X NIP, ID=3.813" Max Angle= 97°@ 11087' 0�� GAS LIFT MANDRELS Datum MD 10297' I.• ST MD TVD DEV TYPE VLV LATCH PORT DATE Datum TVD= 8800'SS 5 3686 3651 r 23 MMG DOME RK 16 01/28/10 4 6421 5755 r 43 KBG2* SO BK 20 01/28/10 9-5/8"CSG,47#, L-80 HYD 563, ID=8.681" - 1867' 3 8199 7098'38 KBG2* DMY BK 0 01/15/10 • 2 9189 7902 F 32 KBG2* DMY BK 0 01/15/10 13-3/8"CSG,72#,L-80 BUTT, ID=12.347" H 2634' 1 9641 8292 28 KBG2* DMY BK 0 01/15/10 *SPECIAL CLEARANCE 3949' -9-5/8"X 7"ZXP LTP w/FLIXLOC LNR HGR, Minimum ID =2.20" @ 10044' ID=8.310" 2-7/8" LNR (CMT SHEATH) 4 j! 4R 9719' -4-1/2"HES X NIP, ID=3.813" �� 4 A� 9750' -17"X 4-1/2"BKR S-3 PKR, ID=3.870" 4 �V 9784' 4-1/2"HES X NIP, ID=3.813" 4. ElI 9857' -14-1/2"HES XN NIP, ID=3.725" 4 VAI 4-1/2"TBG, 12.6#, 13CR-85 VAM TOP, - 9869' 4 N 9869' -4-1/2"WLEG, ID=3.958" .0152 bpf, ID=3.958" ; s. •` •• 9910' -7"X 4-1/2"XO, ID=3.958" 7"SCAB LNR,26#, L-80 BTC-M, ID=6.276" - 9912' ••• ,•�• •�• •1•� 9968' -4-1/2"X 5-1/2"XO, ID=3.958" 4, ►'� 9970' 15-1/2"BKR PBR ASSY, ID=? *4 9984' 1 5-1/2"K ANCHOR, ID=4.875" . CI 9985' -9-5/8"X 5-1/2"BKR SAB PKR,ID=4.75" TOP OF 7"LNR - 10038' 4 -•.• 9990' -7"BKR MILLOUT EXTENSION, ID=5.50" X44 ••••i TREE= 41/16"CM! 13-27B Prop4 ied WELLHEAD= FMC ACTUATOR= KB.ELEV= SAFETY NOTES: BF.ELEV= KOP= 3400' Max Angle= I i I ME }--I412'I$XNP I3E 13' Datum MD= Datum'ND= ST MD TVD DEV TYPE VLV_LATCH 5 3800 3766 38 4.5"X1" DMY RK 9-5/8"CSG,47#,L-80 HYD 563,ID=8.681" —I 1867' 4 6500 5847 38 4.5"X1" DMY RK 3 8000 6964 38 4.5"X1" DMY RK 13-3/8"CSG,72#,L-80 BUTT,ID=12.347" — 2634' 2 9100 7844 28 4.5"X1" DMY RK L1 9800 8469 28 4.5"X1" DMY BK Si 3250' H9-5/8"X 7"BKR ZXP LNR TOP PKR HGR 1 9-5/8"HOT Whipstock I— 3400' 1----um EZSV Rug H 3400' 3-1/2"Tubing Stub --I 3600' ' 9970' H4-1/2"HES X NIP, ID=3.813" r,...., --1 5 10000' H HAL TNT 4-1/2"X 7"PER I 9-5/8"CSG,47#,L-80 BTC, ID=8.681" —I 10322' I !Q• , 1:4* ' 10045' --I4-1/2"HES X NIP,ID=3.813" J 2-7/8"LNR,6.5#,L-80 FL4S, .0058 bpf,ID=2.441" 12672' I 10115' H4-1/2"HES XN NIP, ID=3.725" 7"LNR,29#,L-80 BTC,.0371 bpf,ID=6.184" H 10687' ••••••4 10119' 7"X5" BKR ZXP LNR TOPPKR, HGR w[TIEBACK 11.15'X 5.25" 4-1/2'TBG, 12.6#,13Cr, .0152 bpf,ID=3.958"H 10119' J V , 10125' H4-1/2"WLEG,ID=3.958" I 7"LNR,264, L-80, .0383 bpf,ID=6.276" —I 10269' I I , PERFORATION SUMMARY IANGLE AT TOP PERF: I Note:Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 412'Ltd 12€#13a-8-1.01524 1E39531 Al DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 07/29/83 ORIGINAL COMPLETION 06/03/10 OOP/PJC CMT/SHEATH(05/03/10) WELL: 13-27A 06/02/97 N3S CTD SIDETRACK(13-27A) PERMIT No:'1961210 01/21/10 . D16 RWO API No: 50-029-20949-01 01/25/10 TLH DRLG HO CORRECTIONS SEC 14,T10N, R14E,526'FSL&1185'FEL 02/04/10 DAV/PJC GLV C/O(01/28/10) 03/15/10 HB/JMD DRLG DRAFT CORRECTIONS BP Exploration (Alaska) O 00 C) CGCm W C) to 007-1-!0 C) G)()rr ()-100Dm *47oz o. Zi ta000 08 z < to 0 m< o O0000cc '00tD A m N W+N+W A WDW3Z pW 2y ° a2 m - c aO m9oog, _ o c - ..Z o o �pgp > > ySO m 'm Oa 70 8 O OpZn Tn5 : OOW3 ewQ ja ° 'n ¢ O N yON O,I 2 p , O O 710 m 0m m t0 m -OP = A C X g m O my A C S •y wn m au .54 mm OOjoogO oo oot3 OOOVw WP5VO OA0o0 Oo"oO Ooo!O 0Wp5th dO SSSSS2SSSSSS VS ppppW N+ V V( V SSS.to .. p+zzz�; 0"°wK �tt�{00pp A J>J m N J N(n 0. m b W N OO O 0 V m J w=X W+Ot� V+ m N W V bm OtN D a!0�2 V W m 0 t0 W b• N r (�wtt ttttt titW W WNNN w+IJA w m 0 W t0 m K)-c g.o Ol tO J W 00f wNtO O)AA N� -4-4,,.-4? _ ° 800, 22- Q V C j + �t gppgm m mmmmm m NA J pp4. t00 04.(D�{p W 4.A Nm A .> K) NNNNN NNmbA Aha -.0 0w m W'� NNN 00, __^°(f X'N m m 3.D , CASs j H..1 4, y 4 W uL w O PORI F QD m V ,(AT�m(ppN yNyN NNNNN NNNk v gym(W�Nmp Nl.m AN m0).fWOpP _21 (pN 0,§p p 1�■ C W mNON (A)�(A1iU(A)iU �(4.)tOOOV OJm V o(w)t CVDm8mt° OO V OC W ....W O S p .ti Cr C C N mm 0O) t -1,1 op V VV2m00. ANN-A 88(1"48 88W82 8882=! G W p 0 801,4- VWWNt 811S0� 27,:88800 2:82Ot'4. mpO pSppSppWWWpOJmONNS _y. +SAWO+ N ( tco". OOV ((\�I CL V M V VVVVV 4.°+ fAAAA AWWWW WWwrW OmggW ( WNOaNNVwm WAVNWmv N C m+ NV mON W pV JW0i c“W WUf6 PN+aN ODt Pmp oNA V N so-4N7.4 0 a .G V m Wm 0 pN Nt�pp b+Opp m V tJ m pp d (D� m A m N V W W W W W W W tO N A m $0 W S 2 +4.0 0 W W 0 0 0 W O r-10z 303-f3(0 -1 -4 < <y 00 0 0 . O N CD y 0 y CD << CD CD c _a 0: 0 ato aco QoozzZ 0 m 60 O88,0-4 fa D N .a ....- O° a .iN n ° O a 0 0 N W A A o ? 0 A A(D�A W W N2 ((�� W W N N N N N N O 3 q O V NW V m NN W w N(�pp -.1.p. .NNmom W-. ,..,K,--,o < G3 tD y tp UJ A W AOtm W�w �WYi AtO At0 V N aDOOtn NO V Ol V _m Ay t0 7 0 89 ° C n n C C m tp :,,,,:...",2 bA0 V O V J-+V 4D WbO1J N� U0 V V T O N n d D A 0 tD (� tO +AAbm-.4'4 0000 W WW W w-4 ooS0 S$�0tb C) C N N .=d. R tp tG .,di R T 0 0= 3 —N w w3 o m " 7 'Tf ct0.3 tN co M N 2 -I° 3 wQ - 5. f 'a V So mm .. R 4o 2N NNNN 2+ pp�� . , , , , . W 1 NvrmS 004.g WctppaawWW286) NOONV gcl NmV VV P. 0-.p-.0 oWNWV mVNVN VWW a N W WC1pVb VmioNOtVgg. WNVV :1,0060 NON 0 _Z V J No 00 Wb m NmW NAWON 00000 N+OOmM W 0+0• 2 0=0 J-• MO WN o O N-- N 2 mf� G7�pp��pp c°fii(p�� m 6g .2K 6 W N m 0 0•z S C V N • O N • = =-1-=o3 CO N yw(�D NN (� pp� _ °' 3 N ° W OmNtN't tVif bN W O V�p W N V;Z1 W� pOpbb ..T„2, n 528 ° 8 8 a 8-1 C7 y .p�V(mmT 4t ch ((TT V pwp�c.wWm WW(�D C mPp V w_ ONO N(.O(.��yyi Om(Da� m C Air W W NtNONN tthft0 W 0) cbSCVDm W .20-989 tAO8°18;aa 2N&ON ** CI co ,co d ` V v 3 3 02 c cow am y c V W(�D wp E N NO W w wO +N N N W W w A W W-fD t 7..1'.4( x wt�D -.to-. W O), pD� & SS8Ax 2222_ _m V 61.8 W 6ONm mASS V tNDt=882 .... m .ma1.17mm (0(00 0(0 00rrr rrrrr rrMM,u 7:10MMr .:T CD A A A A O OOOOOO 0 A A A A A A:p A A A A A A A O N+N r go 8 88888 80088 pSOOO 88888 88888 SSTNCO ( 0 x W O 2 C - ..n a ,a,o aU UUU'U'A aAAAA4.AaAA AAA W w W W W W( l O S m( S&it 8N4...NaO8 mmoN AO$VU mmeg Xd N NNNNN NmmmmmNW0WWWWW °W00N NNNNWW z W m pNmmWabbY00 NNpWpOWm NN CoopAn W pp ,D 0 mg ppAmNO iOma 4VO OAVV8 Wi4mW 8WAA � N c- o mNNO4 ( ( N ( NU W mf $wmA00 V -. VA-LWO W$ OO mvA NO +by1S O N co ill Oi Olmmm mmmQ��i MIR mmpmp mm mm mm mmm Will mm pmpm D (1 N (i(�D�mm V v((V({��D:1E o0ilji �ppji pOpi OW(�Dirn$iR Oi 0i 0i pR0E p0i�Oiilal m cocoN04N ,55/1$00�a N�+ O8S_w N0 ,4.'A W ON w4.WAN KNm0DSNn C w N N Nm 0 00+Z6 0(TA0(O �p V O� 666 65+ NNoo m m 7 up N 04.$00 N V A V W mN0 m W N N AOb+N (D y$NO 8 CD O_ W o 0 m -•o m a Om a s -� y'40'1� -1-1-1''m -1 n 0 o N n N z n U 2 n t% V o �c0020. A 3 V A 0 JA0 k0 O 08,2 0 mac) N 3 co m o a o2 2 -t2 o o , o Co O g 8 1) A W tD N O O W O O r O Qp 88222 O 88882 o Np p OVa S O 0 50 p 08000 S pS vNAaa 88888 0p0000008o8Wp00S 10 0,. , Npm 00000 c 00 8888 88888 88888 88888 88888 SSSW> 888NS USOWWWNW dW 08888 SVSG _ 0 8 mmPo' 110110101108 888828 881088 88822 282818 8 tO SOT a 0 V 85-188 0040 m -":18 S CNJ,15011 a,V v top 66650 64,:;,pio 41CO1Nf6 p CDN 0110 g C)V A �I. :N O)O) A tJO 47 W N 08 8888° O N v f0 Ol`,t0Ol =ff N+00 O m+A -.pc,--4, A N O O0 (..-.pro O)O N O1 1 V-L t),A 0)10)0 O 1 +N 1`•N A N - - N N N N N .3.. N NDNINN N'JNN N1,31,31,31%) N N N N N 1,0,0,,,,,K3 N ON + 3 8T12 88888 88800 28p .)V NT1W - A0AD ttt8880081 5151(1UC 0,188W 8(- 1 6666 66666 884.50p1.. , ttTNOVp 4.0100000, T � a01O00W-0WW 0 + 00W 0 W +OO1 08 0 30, 0]57010 ...i 1111 11111 11111 1p A AAA11 111 8c6'4,-,6) 116 W 5080 2%.T2. OA W 500(-94.8 V W V CD C I t0 E)0 tO 1D m(O 10 10 EMI 0)4. R I AO 1?Al m co t0 O N (T t0 W O, tT 8 co.`0 1 ST+ST t0 U U(1 N V 8 CT 0 5T cofT 8 0 V t0 O N+O SD S0 co V p 1 m SOm tT pl�7 p p Nv,4. SV maN 018tiW /1W 8 OfO�t-91N t0$2�N W 8000) S�'8�N 88804. AS0)SA ASA ?w 2 0 0 O• 501(0 t0 m(O(O(O t0O tD tO(O 1050 §§§1§ 0 b11 0,(10101 N ODOOODtL o a,o0)0 V V V V V C 00 Q(01(0T p4. p§O 00§§0 00000 S W A A(S1 i[.1 N1p O0O V 00 4 p.m.._ __ . 00.+iN W0 Opp OtVl18 . ..c.6.--J0 m m V V V. A A V 04.)W A N -.10749)1fJ 9,,01 V m- p74-,A W 1 P) 1 A A 10 A V W W S+l O t1 tT W N d d A A coir,-4 -I `‹ A l-9 1 p A A N+ 1tpp 0)50(t11(t11 1 4.0(,J 0 0 co-..-.N6 66-L--,0 -,..-4-,6-, O fT 0 W A CD (TOA V W 84.81 W(O W A 1 tOt00f 0 W W NA11 N10A At1 1+t+)W 10 AA , w Www V V W-W V V W V O -0 CC m Oo 11 1 O tA y A .6888S 1 A W N 1.1888 8§814 §NN NNNN N N N.WaN N N'8888 .7.1=.1:41t' 8 1 8 vNpO X00pp288NU ++NACD ?4.50aa0O .Om 014.SON N4. 88 NDON jO0W0p+W co� VNW+ Opi. Oia4T-9 Ath(�pp((11A1 .` S _m _ W O 11 A N18T 00ON0 Vt W 8p GNyy W +NBW 00+A11V+WVANWW1110+ W W 41 N J -15 n• (15t11(1t1 66666(1 .1,1:..4.4 511, W W 4,gk W W 1�t1 L) 6 L1 W 4.. 4.t W tato W NNNN NNNDIN NNN - V 114. W 508 1 6SB§A f06'Rf tVT (VTO)O gt jp.141 i1 N 000 Ot6000D0D V V tV�01 pop W J.J J1p)0O CO 101 N V, 57t-4p0 ,7.J tO pWp�� O0))A V,t-9T 10. ,Is V(T 0� •PIpr�,, a DN 1.04.50 tQ (0 W,100 V t_t�. 4.q?a W_ ,01,50. win 8 O-.6 t1TN tOv01 W vODNOA V t1T10Nm W OD8�Of 10,-Aco oo.c. W 5000,04. 001(0)W V v A V O. O) CO W N J CO - - w-4w NNNN 8 NN N0mW � 110+ Wpp-9+N 8281 W0m 00000 W1W 1 N) V 08WtTRN Aa AA vv vv W A WO10po0W -.6Wo7.4A1 OOON+ Oo. 74 -,wOt1S11O1V VO)VO)C NC +WO V00W _CO 88. + W1; OA - O 00808 1WzIWp058NA 80888 280m8 V0A1 88888 88888 mtlltmT V ?2 , mm Q 10 t0 N N W W o No O-.+ ,(1001(10(0 800 8 �+ t0.tT O,N ST[150(01 T E R 4. O)+VSO+ N+N O) 1:1:6.p88, A V N+ 0)0001p) 60(1)p1 C) 8 V N UST in O' 0)�.o tO 1 V A A p V V 510 O�W O U W W 1 V V 1�SO 06 W 0 0,0w, 2 V+N2 4.(T V+N 50(0101 (01102 8)50%15 1 41pr10= ZZZZM W 1a++ 1 W N V ....1 1-1-1-1- rrrrr CMMMC rrrrr t-rrrr 111100 MM AM AMAMtn tntntntntp MAMMIO MAMM .,:T A A A A A A A A 0 A A A O A A A A A A pA A A A A A A�.0 0 0 0 Q 0p p 0p 0 pO 0 p Op O p Op p0000a ,e.:b.A.c.4, A A A A cop 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 s+0000 0 S S S S S S o 0 0 8 S O S 0 O..0.000 S,P000 )O S S `w 0_ 3 E O a ` AA( N VW pW1 , 60000000000000000000000000001TT110 ), 0TI O 1AAAaA WWWC)0) NNNNN a 0000 S10010 0po0VV NNVVV VVW0RZgONm + 001 00.W+0 TWWNCD V14.500 MOAN 0V1A- WN0J 00000 0VOO1 WWj0V NN1TN3( NN115050l881NNN1( ( 0 ( ( N( 0 ONNNDN)NNN N50KN yNNNNNN NNN ,� ,4N50,K,N N'� 3 Z 0.8 ypA (Ttp 10 1110 001 50 001A 8W8S. p+W0N aWNW ONO1W OVOp� 000UONt,oga NON1WNS� V8 050V5018p jPNW4. 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I: !••1.1.• ° .-E co 0 0 a N a I (4)00z1.:(uoi.=oleos ani by 0 Schlumberger WELL 13-27B (p13b) FIELD Prudhoe Bay Unit- EOA STROCTURE DS-13 Magnets Parameters Surface Loceton 59027 Mash State Plana.Zone 04 US F. Malan. Mo.'. 0GGM2010 09'. 80.950' 0ata July 08.2011 Lal: N 701254.922 North.: 5930934.278US GIM Cone.141231891' Slot 1127 ND RM: Rofary Tab.(78.1311abow MSL) Matz Dec 21.5%' FS'. 578525n7 Lon: W 1482958.842 04616: 88®87.85 WS SPM Fact 0.%833933 Plan: 11276(P131)) S.Data:March 09.2011 -1000 0 1000 2000 3000 13-318"Csg 0 A:- 0 Tie-in Survey Top Whipstock \ Base Whipstock F Cry 41100 N Cry 41100 En6Cry -100011111111 -1000 -2000 /� / i3 276 -2000 Cry 41100 A A A Cry 411C(0 3-27B FR 1 8900ss Z Ettd Cry End Cry 3000 3000 O O 13-278 Flt 8300ss 13-276 Flt 4 8975-- / C3-27B Tgt 1 Sag 9 cry zaloo II9-518"Csg/U -4000 ° .13-27B Tgt2 7"Lnr -4000 cn I0001111* V Cry ui00 /, V End Cry 13-27 ` V 1 73 Tgt 3 ' ,3-27B Fit 3 8960ss V , /fie End Cot 14 ( /A fr { v`•Ia-5000 ery 4100 I -5000 13-27B Tat 4 is. If2-718•,Lnr 13-2715 -6000 • 11-278 Flt 5 8990. -6000 i End Cry 13-278 Ftt 8 89 1 1% .ITD 13-27B(P13b) 1 -7000 7000 -1000 0 1000 2000 3000 «< W Scale=1(in):1000(ft) E >>> l I BP Anticollision Report Company: qNorth America-ALASKA-BP Local Co-ordinate Reference: Well 13-27 Project: Prudhoe Bay ND Reference: 13-27B Plan @ 78.13ft(Doyon 141) Reference Site: PB DS 13 MD Reference: 13-27B Plan @ 78.13ft(Doyon 141) Site Error: 0.00ft North Reference: True Reference Well: 13-27 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan 13-27B Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#13b 13-27B Offset ND Reference: Offset Datum Reference Plan#13b 13-27B Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer( Interpolation Method: MD Interval 5.00ft Error Model: ISCWSA Depth Range: 3,395.13 to 14,966.86ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,693.84ft Error Surface: Elliptical Conic Survey Tool Program Date 3/9/2011 From To (ft) (ft) Survey(Wellbore) Tool Name Description 95.13 3,395.13 13-27 Srvy 1 CB-GYRO-MS(13-27) CB-GYRO-MS Camera based gyro multishot 3,395.13 3,700.00 Plan#13b 13-27B(Plan 13-275) INC+TREND Inclinometer+known azi trend 3,700.00 4,700.00 Plan#13b 13-27B(Plan 13-27B) MWD MWD-Standard 3,700.00 10,269.33 Plan#13b 13-27B(Plan 13-27B) MWD+IFR+MS MWD+IFR+Multi Station 10,269.33 11,300.00 Plan#13b 13-276(Plan 13-27B) MWD MWD-Standard 10,269.33 14,966.86 Plan#13b 13-27B(Plan 13-27B) MWD+IFR+MS MWD+IFR+Multi Station Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) PBDS13 13-09-13-09-13-09 8,771.34 8,680.00 1,052.08 726.95 407.88 Pass-Major Risk 13-11 -13-11 -13-11 3,396.99 3,465.00 832.89 110.82 750.08 Pass-Major Risk 13-12-13-12-13-12 3,395.13 3,450.00 362.61 58.43 307.66 Pass-Major Risk 13-12-13-12AXX-13-12AXX 3,395.13 3,450.00 362.61 58.32 307.77 Pass-Major Risk 13-13-13-13-13-13 3,395.13 3,490.00 487.75 70.95 420.27 Pass-Major Risk 13-13-13-13A-13-13A 3,395.93 3,480.00 488.13 70.96 420.71 Pass-Major Risk 13-27-13-27-13-27 5,104.26 5,095.00 135.10 221.46 -42.23 FAIL-Major Risk 13-27-13-27A-13-27A 13,391.03 12,672.00 151.68 595.29 -443.44 FAIL-Major Risk 13-28-13-28-13-28 4,020.90 4,090.00 124.13 190.41 22.95 Pass-Major Risk 13-28-Plan 13-28A-13-28A wp03 3,398.31 3,440.00 213.43 67.09 147.43 Pass-Major Risk 13-29-13-29-13-29 3,397.53 3,535.00 452.32 68.67 385.82 Pass-Major Risk 13-29-13-29L1 -13-29L1 3,397.53 3,535.00 452.32 68.67 385.82 Pass-Major Risk 13-36-13-36-13-36 5,516.41 5,605.00 678.75 229.15 534.52 Pass-Major Risk 3/9/2011 11:45:09AM Page 2 of 3 COMPASS 2003.16 Build 73 ! I COcti N >, M m� —8 m N M 1,- 73 a N C C CDMc0 (0 — o_—ao_ P91 _ � O -- O 0 - O -- O co - -) O - p O _8 r m Q r) � O D CD O o _ a> 0 0 N- • u4 - r) 0 _ - o —N - r) —- 7S s _ r) _ (gi - —M - N) _ 8 IIpp 11 r I I 1 I I I I I I V I I I I f I ' — 1 , I I . 1 I I II Ti 1 f� (O (l) U) O V C)) cO� N N O to O (uyu 01-)uolleJedeS aglua° of ague° Project: Prudhoe Bay Site: PB DS 13 Well: 13-27 From Colour To MD Wellbore: Plan 13-27B Design: Plan #13b 13-27B 3395 3400 3400 3600 3600 3900 From KOP�o Oft 3900 4200 Scan interva 1 4200 — 4500 Scale 1 : 50 4500 — 5000 All offset wells pass Major Risk 13-27 risk 1:200 0 5000 6000 13-27A no tolerances needed 1756000 8000 8000 15000 330 ,50 6 3560 ,2 ') 36 3752 28113.28 / 4120 /3845 100 300 4030 3938 / 60 75 ------... ..,N\:________ ,, , 77......,....------- g0 270 i 1 � "4417); 90 795 1 ' 3898. iT 7' 1/07 ffP - I 5,_ / , 13-27/13-27A 451: 3313 ____ 7 � '\. 7 -,: 1114 4716 240 , k% _ 120 �� *4114 Adi 11.11",—- - Alvouppyr or `R .�itivotor - 50 210 i ,, 150 any175 180 Travelling Cylinder Azimuth (TFO+AZI)[°]vs Centre to Centre Separation [50 Win] Taw.I 1-17B Gee Poly P.epv.MOW Bey Well:11.27 I ft gTame Cont:93 Baaeaoae Masud PeoianPlw al3b ll-TIB Bnwiliom Valeal Dalt 1111113.13 BDesn 13.278Ph0 Map Np1YK 39276114.W ft Leal.W-S:-6ff1-12 B Map&N06:61701LW ft Leal W-W:7W33 ft Latino*70''I1'47.040'l 1<opa ke lat.29'34.207 W Sum Poysoa 13 pis • i • t - I I I • . . 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A n---A A ; , IU'$i•4u11 81 e •a • 1111 if vA\Ir c Isr s) IIF Eg i m ^ IR it c?, 1g ., to C a' Alaska Department of Natural Resources Land Administration System Page 1 of 1 Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources find Alaska DNR Case Summary File Type: ADL File Number: 28315 4 Printable Case File Summary See Township,Range,Section and Acreage? New Search v. Yes No LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28315 •"'P Search for Status Plat Updates As of 04/01/2011 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E.BENSON BL ATTN:LAND MANAGER-ALASKA ANCHORAGE AK 995196612 Case Type: 784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location:DOG DIV OIL AND GAS Case Status:35 ISSUED Status Date: 08/19/1965 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: 01ON Range: 014E Section: 13 Section Acres:640 Search Plats Meridian: U Township: 01 ON Range: 014E Section: 14 Section Acres:640 Si/e /6'G Meridian: U Township: 010N Range: 014E Section: 23 Section Acres:640 v- P1 Meridian: U Township: 01 ON Range: 014E Section: 24 Section Acres:640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-137 TION, R14E, UM 13, 14, 23, 24 2560.00 End of Case Summary Last updated on 04/01/2011. Not sure who to contact?Have a question about DNR?Visit the Public Information Center. Report technical problems with this page to the Webmaster. Site optimized for Netscape 7, IE 6 or above. This site also requires that all COOKIES must be accepted. State of Alaska Natural Resources LAS Home Copyright Privacy System Status http://dnr.alaska.gov/projects/las/Case_Summary.cfm?FileType=ADL&FileNumber=28315... 4/1/2011 Alaska Department of Natural Resources Land Administration System Page 1 off 1 Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources find, Alaska DNR Case Summary File Type: ADL File Number: 28316 Printable Case File Summary See Township,Range,Section and Acreage? C.! Yes 0 No New Search LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28316 ""'P Search for Status Plat Updates As of 04/01/2011 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E.BENSON BL ATTN:LAND MANAGER-ALASKA ANCHORAGE AK 995196612 Case Type:784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location:DOG DIV OIL AND GAS Case Status:35 ISSUED Status Date: 08/26/1965 Total Acres: 2560.000 Date Initiated:05/28/1965 Office of Primary Responsibility:DOG DIV OIL AND GAS Last Transaction Date:05/04/2009 Case Subtype: NS NORTH SLOPE Last Transaction:CHNGTEXT CHANGE LEGAL TEXT Meridian: U Township: OION Range: 014E Section: 25 Section Acres:640 Search Plats 72) Meridian: U Township: O10N Range: 014E Section: 26 Section Acres:640 Meridian: U Township: O10N Range: 014E Section: 35 Section Acres:640 Meridian: U Township: OION Range: 014E Section: 36 Section Acres:640 Legal Description 05-28-1965***SALE NOTICE LEGAL DESCRIPTION*** C14-138 TION,R14E,UM 25,26,35,36 2560.00 04-01-1977***UNITIZED LEGAL DESCRIPTION*** PRUDHOE BAY UNIT T10N,R14E,UM SECTION 25 640 ACRES; SECTION 26 640 ACRES; SECTION 36 640 ACRES. CONTAINING 1920 ACRES,MORE OR LESS. 12-04-1969***ASSIGNMENT LEGAL DESCRIPTION*** SEGMENT 1 TION R14E UM SEC 26:ALL SEC 35:ALL SEC 36:ALL CONTAINING 1920 ACRES,MORE OR LESS SEGMENT 2-LANDS ASSIGNED T10N R143 UM SEC 25:ALL CONTAINING 640 ACRES,MORE OR LESS n 03-17-2009 **ALIGNMENT OF WORKING INTEREST,ROYALTIES AND FIELD COST DEDUCTION STATUT OF"A"TRACT http://dnr.alaska.gov/projects/las/Case Sununary.cfm?FileType=ADL&FileNumber=28316... 4/1/2011 OVERSIZED DOCUMENT INSERT This file contains one or more oversized documents. These materials may be found in the original hard file or check the parent folder to view it in digital format. TRANSMITTAL LETTER CHECKLIST WELL NAME /..j/ /30?9d7 PTD# oZ/./U ,17 /Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: R,e!✓D'/De' /�4>1 POOL: /',6e4D/'OE" ..e70.4/ �/G 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. 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To improve the readability of the Well History file and to simplify finding information, information of this nature is accumulated at the end of the file under APPENDIX. No special effort has been made to chronologically organize this category of information. Technical Report Title Date Client: BP Exploration (Alaska) Field: Prudhoe Bay Unit Rig: Nabors 7ES Date: July 16, 2011 Surface Data Logging End of Well Report 13-27B TABLE OF CONTENTS General Information Daily Summary CFM Summary Morning Reports Bit Record Mud Record Formation Tops Days vs. Depth ADT™ Optimization Report Digital Data to include: Formation Mud Logs Engineering Logs Gas Ratio Logs Halliburton Log Viewer EMF Log Viewer EOW Report PDF Version A D I B a c k u p GENERAL WELL INFORMATION Company: BP Exploration Alaska Inc. Rig: Nabors 7ES Well: 13-27B Field: Prudhoe Bay Unit Borough: North Slope Borough State: Alaska Country: United States API Number: 50-029-20949-01-00 Sperry Job Number: AK-AM-8274212 Job Start Date: 26 June 2011 Spud Date: 26 June 2011 Total Logged Depth: 10761’ MD, 9036’ TVD North Reference: True Declination: 21.5450 Dip Angle: 80.93 Total Field Strength: 57664 nT Date Of Magnetic Data: 10 July 2011 Wellhead Coordinates N: North 70° 12’ 54.92” Wellhead Coordinates W: West 148° 29’ 56.84“ Drill Floor Elevation 83.00’ Ground Elevation: 49.6’ Permanent Datum: Mean Sea Level SDL Engineers: Tom Mansfield, Ryan Massey Sample Catchers: Chris Woolley, Herman Lilgreen, Michael Dellera Company Geologist: Brian Christensen, Jim Raye Company Representatives: Ferguson, Anderson, Bordes SSDS Unit Number: 115 DAILY SUMMARY 6/26/2011 Mudlogger Ryan Massey arrived on location. 6/27/2011 Unit 115 arrived on location 6/28/2011 Mudlogger Tom Mansfield arrived on location. 6/29/2011 Spotted unit. Electrician wired electrical connections. Began Rig-up. 6/30/2011 Continued Rig-up. 7/1/2011 Continued Rig-up. 7/2/2011 Continued Rig-up. 7/3/2011 Sperry SDL completed rig up in preparation for drilling the Intermediate Section. One sample catcher arrived on location. Tested and worked on computers. POOH and laid down milling BHA. Picked up drilling BHA and ran in the hole to 1097' MD. Shallow pulse tested MWD. Ran in hole to 3394' MD. Slipped and cut drilling line. Worked on Top Drive, aligned torque tube rail. Circulated to establish PWD clean hole parameters. Slacked down through window to 3427' MD. Washed to 3452' MD. Performed FIT to 11.9 ppg EMW. Drilled ahead from 3152' MD to 4175' MD. 7/4/2011 Second Sample Catcher arrived on location. Drilled ahead from 4175’ MD to 6656’ MD. Lithology was primarily Claystone and Sand with occasional interbedded Coal seams. No connection gases noted. Changed swab on #2 pump at 6528' MD. 290bbl mud dilution at 6958' MD. No fluid losses or gains. 7/5/2011 Drilled from 6656' MD to 8432’ MD. Changed #2 shaker screen at 6783' MD. Lithology primarily Claystone and Sand with minor Tuffs, becoming Siltstone toward the top of CM2. Performed 290 bbl mud dilution at 6958' MD. No connection gas noted until the 8382’ MD connection with 186 units over a background gas of 86 units. No mud losses or gains until the 8382’ MD connection in which losses of 60bbls/hr occurred while transferring mud from truck to pits. Continued drilling to 8432’ MD. Lost 116bbls total while pumping. Shut in pumps and flow checked well. 26 bbls returned from well while flow checking. As result, total mud volume lost to well was 80bbls. 7/6/2011 Pumped 50bbl LCM pill and tripped out of the hole one stand. Monitoring well showed swabbing. Backreamed to 7516’ MD and circulated with a max gas of 152 units. Lost 167bbls while circulating and exhale test resulted in receiving 55bbls. Backreamed to 7249’ MD and cut mud weight from 10.0ppg to 9.8ppg. Backreamed to 5374’ MD with 475gpm and 1710psi and an average gas of 18 to 28 units. 24 hr fluid losses of 158bbls, total mud volume lost to well was 238bbls. 7/7/2011 Back reamed to 3394’ MD. Laid down Ghost Reamer and tested rams. Tripped in the hole to 8432’ MD and circulated with a trip gas of 2057 units. Monitoring trip volumes showed 10bbls lost running in hole. Drilled 8 ½” hole to 9041’ MD with 550gpm and 3175psi. Drilling gas was minimal with a noticeable reduction in heavier gases. This was most likely due to the multiple mud dilutions that have been done to bring the MW down to 9.8ppg while keeping the MTB's within specs. Background gas ranged from 38 to 65 units with no peaks. Minor amounts of connection gas were noted (CG130/BG48 units at 8564' MD Conn, CG 121/49 units at 8660' Conn). Unable to note any trends with the Connection Flow Monitor for past 2 connections while rig was working with the mud system, dumping and bringing on fluid. No Shale cavings seen at shakers but noted minor amount of sub tabular to platy Shale cuttings (see pic 8550’). 24 hr fluid loss of 70bbls. Total loss to well of 308bbls. 7/8/2011 Drilled ahead with minor connection gases averaging 50 units over background from 9041’ MD to 9086’ MD’. Noted slight increase in flow. Stopped and checked for flow - negative. Drilled ahead to 9131’ MD and performed 10 stand short trip with Short Trip Gas of 210 units. Drilled ahead from 9131' MD to 9713' MD. No connection gases noted since short trip. Background gas crept up from 125 units at approximately 9240' MD to background gas of 449 units in response to approaching the HRZ. Gas readings appeared to be influenced by the alternating periods of sliding and rotating. Formation gas ramped up while in the HRZ showing two individual peaks of 909 and 3983 units. The Connection Flow Monitor noted a minor change in pit volumes after connections but this is most likely due mud system being maintained and not flow related. Formation lithology is a Silty Shale with no cavings seen in cuttings. Continued to perform mud dilutions to keep the mud within range. Drilled ahead to 10210’ MD. 7/9/2011 Drilled ahead to 10280’ MD. Picked up and surveyed. Circulated bottoms up with a gas peak of 1004 units over a background of 325 units presumably from first “rabbit ear”. Drilled an additional 8’ MD to 10288’ MD which was called TD of 8 ½” hole section. Another similar peak of 880 units occurred at TD from bottoms up, presumably from a second “rabbit ear”. HRZ did not show indications of sloughing. Began noticing up to 1" fluted and splintery shale fragments from the top of the Kingak on. Sloughing fragments appeared to diminish somewhat after the sample from 10280' MD. Connection gases began to increase at the top section of the Kingak with a high of 697 units over a background gas of 370 units but decreased to 426 units over a background of 360 units by the connection at 10163' MD. CFM showed stable trends with no ballooning or fluid losses noted, however, dumping or diluting mud occurred often during connections. Interesting note: From the top of HRZ propane peaks increased proportionally, surpassing ethane levels. Began pulling out of hole to 5651’ MD. 7/10/2011 Continued tripping out from 5651’ MD to 3404’ MD. Monitored hole for 5 minutes and dropped rabbit. Continued pulling out of hole and laid down BHA. Rig up for running 7” liner. Ran liner to 3369’ MD and circulated 2 bottoms up prior to exiting window while working between 3404’ MD to 3421’ MD. Continued running liner to 3695’ MD. Total losses at midnight from liner run of 21bbls. 7/11/2011 Continued running liner from 3654’ MD to 4515’ MD. Circulated out prior to entering HRZ with 315 units maximum gas. Continued running liner to bottom at 10286’ MD. Pushed away 85bbls running liner. Total losses to well of 452bbls. 7/12/2011 Circulated and conditioned mud prior to cement job with a maximum gas of 518 units and average gas of 220 units. No notable cuttings returned. Cemented liner per well plan. Top of liner was at 3248’ MD with the bottom at 10286’ MD. Backed off liner and circulated prior to pulling out of hole with no cement or cement contaminated mud back to surface. Began testing BOPE. 7/13/2011 Changed out annular bag and completed BOPE test. Picked up new BHA for build section and 96 joints of 4” drill pipe. Tagged landing collar at 10197’ MD. Picked up to 10162’ MD and displaced to 8.5ppg FLOPRO Fluid. Drilled out of liner to 10308’ MD and performed FIT to 10.0ppg EMW. 7/14/2011 Drilled ahead to 10761’ MD and began pulling of the hole to change BHA. Continued drilling ahead to 10761' MD. Background gas increased gradually from 50 units to 300 units to 350 units. A gas peak of 431 units was noted. There were no flows on connections noted as well as no connection gases. Shale cuttings were soft to very hard and brittle. No cavings noted. Sperry SDL was released as of 15:20 this afternoon and commenced rigging down. Connection Flow Monitor Summary The Connection Flow Monitor (CFM) worked as expected throughout most of the intermediate hole section of 13-27B although improvements will be implemented for future wells. There were no indications of wellbore breathing until 271’ MD into the CM2. Losses were noted initially at 8382’ MD, approximately 9 minutes after the connection was made, and before new footage was drilled. There was no indication of wellbore breathing during the connection. 116 bbls were lost and 26 bbls returned while flow checking well for a net loss of 80 bbls. There was also connection gas circulated up associated with the 8382’ MD connection of 186 units over 86 units. Sperry continued to record connection gas from this depth up until the CM1. The mud weight was lowered from 10.0ppg to 9.8ppg. Backreamed to 7420’ MD recording a 167 bbls loss, once pumps shut down 55 bbls were recovered for a net loss of 112 bbls. Pulled into casing and laid down the Ghost Reamer. Ran in the hole to bottom with 2100 units of trip gas and drilled ahead. At 9086’ MD, the well was shut in due to a slight increase of flow noted. Subsequent connections were difficult to detect precise wellbore breathing due to rig activity (adding/dumping fluid during connections) although 1-3 bbl increase in return flow to the pit system was estimated. The 9595’ MD connection clearly showed a 2 bbls increase when compared to connection flows before it. Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air - Max: Hole Condition On Bot Hrs --PWD Drilling All Circ Avg Diam this morning and tomorrow morning. Testing and working on computers at the time of report. Sperry SDL completed rig up in preparation for drilling the Intermediate Section. Sample catchers arriving on location Depth md Current R.O.P. (ft/hr) Gas (units)-- - 0' Running in the Hole -- Flow In (gpm) Current Pump & Flow Data: - - - $0.00 - - Total Charges: Flow In (spm) SPP (psi) Gallons/stroke % - 7.4 mg/l -AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg ml/30min Max:Ambient Air Pit Room -- Gas (units) 45 - 1 07/3/2011-04:00 3452' North Slope Daily Charges Avg (ppb Eq)cP PV Size MBT BPXA 13-27B Prudhoe Bay Max @ ft - 10.00 10.00 Nabors 7ES $0.00 AK-AM-0008274212 0.5 Silt Siltst ClystCht 3452'10 Chromatograph (ppm) H2S Data Sample Line Avg: ShSd Depth 4.4 Lst Tuff Gas Breakdown Avg: Sst API Filt 9.5023 Ryan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 800 24 hr Max YP Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 800 24 hr Max YP 23 Tuff Gas Breakdown 3452.00 Avg: 43 SstSd Depth 4.2 Lst 3452' 3 1171' 100 Sh H2S Data Sample Line Avg: 26759 Chromatograph (ppm) 0.5 Silt Siltst ClystCht DTX619M-D6 3452'1010.00 10.00 8.10 Nabors 7ES $2,431.92 AK-AM-0008274212 8.5 0.840 (ppb Eq)cP PV Size MBT BPXA 13-27B Prudhoe Bay 2 07/4/2011-04:00 4623' North Slope 4623.00 Daily Charges Avg 211.0 1137.0 Gas (units) ml/30min Max:Ambient Air Pit Room 48 - pH Chlorides GvlCoal -Min -Avg 7.5 mg/l -AvgMin Max Max API Filt 9.00 1710 2.4300 $20,680.00 497 204 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke 1171' Drilling Ahead Ferguson/Anderson 200 4388' Flow In (gpm) Current Pump & Flow Data: - 191.0 Max @ ft Current R.O.P. (ft/hr) Gas (units)81 43 3751' Depth md to 4623'. Daily charges may be corrected after tomorrow. hole to 3394'. Slipped and cut drilling line. Worked on Top Drive, aligned torque tube rail. Circulated to establish PWD clean hole parameters. Slacked down through window to 3427'. Washed to 3452'. Performed FIT to 11.9 ppg EMW. Drilled ahead from 3452' PWD Drilling All Circ Avg Diam % - POOH and L/D milling BHA. Picked up drilling BHA and ran in the hole to 1097'. Shallow pulse tested MWD. Ran in -- Max: Hole Condition On Bot Hrs 4623'- 200 Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 825 24 hr Max YP 80/160 23 Tuff Gas Breakdown 4623.00 Avg: 150 Sst 0 GP0 Sd Depth 7.7 Lst 3452' 3 0 0 3458' 40 Sh 10-15 H2S Data Sample Line Avg: 50 113903 Chromatograph (ppm) 12.5 Silt Siltst ClystCht DTX619M-D6 6408'1210.00 10.00 22.10 Nabors 7ES $3,894.00 AK-AM-0008274212 8.5 0.840 (ppb Eq)cP PV Size MBT BPXA 13-27B Prudhoe Bay 3 07/5/2011-04:00 6910' North Slope 6880.00 Daily Charges Avg 255.0 668.0 Gas (units) ml/30min Max:Ambient Air Pit Room 47 10 - pH Chlorides GvlCoal -Min -Avg 10.0 mg/l -AvgMin Max Max API Filt 9.60 2610 2.4300 $22,858.00 533 220 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke 2287' Drilling Ahead Ferguson/Anderson 1139 5258' Flow In (gpm) Current Pump & Flow Data: - 180.0 Max @ ft Current R.O.P. (ft/hr) Gas (units)90 150 4851' Depth md connection gases noted. Changed swab on #2 pump at 6528'. Changed #2 shaker screen at 6783'. 290 bbl mud dilution at 6958'. No mud losses or gains. PWD Drilling All Circ Avg Diam % - Drilled from 4623' to 6910'. Lithology primarily Claystone and Sand with occasional interbedded Coal seams. No 0 bbls 8.50'' Max: Hole Condition On Bot Hrs 4623'22.1 1139 Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 535 8.50'' Max: Hole Condition On Bot Hrs 8102'29.68 PWD Drilling All Circ Avg Diam report. Cuttings are mostly amorphous up to this point, however rare elongated pieces of silty claystone are seen in the samples. Occasional Coal cavings noted. Heavier gases showed up at 7410' MD but were not consistent due to mud being dumped over Continued drilling ahead from 6910' MD to 8102' MD. No connection gases or fluid influxes noted at the time of Depth md the shakers. By 7632' MD, the heavy gases were sustained in the gas chromatograph. Current R.O.P. (ft/hr) Gas (units)125 145 7260' 1192' Drilling Ahead Ferguson/Anderson 535 7294' Flow In (gpm) Current Pump & Flow Data: - 1559 2.4220 $22,858.00 357 220 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke % - 10.0 mg/l -AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg 10 ml/30min Max:Ambient Air Pit Room 191.0 461.0 Gas (units) 47 0.0 4 07/5/2011-16:00 8102' North Slope 7301 Daily Charges Avg (ppb Eq)cP PV Size MBT BPXA 13-27B Prudhoe Bay Max @ ft 0 bbls 10.00 10.00 22.10 Nabors 7ES $3,894.00 AK-AM-0008274212 8.5 0.840 12.5 Silt Siltst ClystCht DTX619M-D6 6408'12 50 74796 Chromatograph (ppm) H2S Data Sample Line Avg: 0 3458' 40 Sh 10-15 Sd Depth 7.7 Lst 3452' 3 0 GP0 Tuff Gas Breakdown 7293 Avg: 375 Sst API Filt 9.60 80/160 23 0 Ryan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 825 24 hr Max YP Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 266 91455 16453 552 Hole Condition On Bot Hrs 4623'22.1 999 Drilling All Circ Avg Diam Drilled ahead from 6910' to 8432'. Began taking losses of approximately 60 bbls/hr while transfering mud from truck to Depth -8.50'' pits. Lost 116 bbls while pumping. Shut in pumps and flow check well. 26 bbls returned from well while flow checking. Total lost to well after 26 bbls returned, 80 bbls. No connection gas noted. Good cuttings quality with minor coal cavings. Gas (units)na na md 1522' Monitor Well Ferguson/Anderson 999 8161' Flow In (gpm) Current Pump & Flow Data: 2885 2.4300 $30,502.80 535 220 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke % - 9.0 mg/l 10.80 AvgMin Max Max pH Chlorides GvlCoal -Min -Avg Max:Ambient Air Pit Room cP 0 Gas (units) 47 7500 8000 4 07/6/2011-04:00am 8432' North Slope 192.0 461.0 ml/30min - 10.00 32.90 $3,893.76 DTX619M-D6 8387' 183 7260' Current R.O.P. (ft/hr) BPXA 13-27B Prudhoe Bay Max @ ft 0 bbls 10.00 Nabors 7ES Daily Charges Avg (ppb Eq) Cht AK-AM-0008274212 8.5 0.840 12.5 PV Size MBT PWD 12 5028' 45 Silt Siltst Clyst 50 13348 Chromatograph (ppm) 5 Avg: 7500 8000 8432 Max: 320 162 158 96 2598 5094 386 GP 44 BG 1249 Sd Depth Max C3C2C1 Sh H2S Data Sample Line 0 7.5 Lst 3452' 3 24 10-15 143 Avg Sst Type 0 C4 Tot C5 Tot BG 501 API Filt 9.60 80/160 Tuff Gas Breakdown 6880 Avg: YP 0 Ryan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 850 24 hr Max Customer: Report #: Well: Date: Area: 04:00 Depth Location: Progress 12 hrs: Rig: Rig Activity: Job No.: Report For: ROP & Gas: . Mud Data:Density (ppg) Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) Ann Corr Cor Solids (lb/100ft2) - 12 hr Max YP 80/160 C3 19 Tuff Gas Breakdown Avg: Avg Sst TypeC4 Tot C5 Tot Sd Depth Max - Lst 3452' 3 - 5028' 45 C2C1 Sh 10-15 H2S Data Sample Line Avg: 50 Chromatograph (ppm) 5 - Silt Siltst ClystCht DTX619M-D6 8432' 119.80 9.80 32.90 Nabors 7ES $3,893.76 AK-AM-0008274212 8.5 0.840 (ppb Eq)cP PV Size MBT BPXA 13-27B Prudhoe Bay 4 07/6/2011-04:00pm 8432' North Slope Daily Charges Avg -- Gas (units) ml/30min Max:Ambient Air Pit Room - - pH Chlorides GvlCoal -Min -A v g - mg/l -A v gMin Max Max API Filt - 2106 2.4300 $30,502.80 502 208 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke 0' Backreaming to Shoe Ferguson/Anderson 24 - Flow In (gpm) Current Pump & Flow Data: - - Max @ ft Current R.O.P. (ft/hr) Gas (units)37 183 - Depth PWD Drilling All Circ Avg Diam % - 0 bbls 8.50'' Max: Hole Condition On Bot Hrs 8432'32.61 to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:* 10000 units = 100% Gas In AirRyan Massey / Tom Mansfield md hole; noted an average of 18-28 units of gas while backreaming. Two samples were caught from the shakers: Sample 1- 40% Sand, 30% Claystone, 30% Mud Additives, no real cuttings structure, no cavings present. Sample 2 - 30% Sand, 40% Claystone, 30% Mud Additives, few Claystone cuttings present, no cavings present. In reviewing the time log, there was an instance of with gas at 158 units and pulled out 3 stands while working pipe and circulating 9.8ppg mud around. Gas Maxed out at 152 units while working pipe and fell off to background gas of 27 units within 50 minutes of circulating. Began backreaming out of the connection gas noted while circulating the 8382' MD connection; CG 186 units over 86 units background. Continued to have pumps shut in. Decision made to weight from from 10.0ppg to 9.8pgg. Established circulation Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 186 On Bot Hrs 8432'32.9 0.840 Size Hole Condition Drilling All Circ Avg Diam Pumped 50 bbl LCM pill. Pulled 1 stand DP. Monitored well with slight return from ballooning. Back reamed out to Depth -8.50'' md gpm. Total losses midnight to midnight of 158 bbls, 238 bbls total. 7420' and circulated hole losing 167 bbls. Shut down pump. Well returned 55 bbls. Backreamed to 7250' and cut MW from 10ppg Current R.O.P. (ft/hr) Gas (units)na na to 9.8 ppg. Backreamed to 4562' with 1800 psi at 500 gpm. Continue backreaming out to 3503' at report time with 1130 psi at 400 PWD 183 na 0' Monitor Well Bordes/Anderson 294 04:30 Flow In (gpm) Current Pump & Flow Data: 1180 2.4300 $30,502.56 400 165 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke % - 8.0 mg/l 10.80 AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg ml/30min Max:Ambient Air Pit Room cP 205 Gas (units) 45 8382 8.5 8387' 5 07/7/2011-04:00am 8432' North Slope BPXA 13-27B Prudhoe Bay na na 0 bbls Daily Charges Avg (ppb Eq) 9.80 32.90 $3,893.76 DTX619M-D6 9.80 9 Max @ ft Nabors 7ES AK-AM-0008274212 15.0 PVMBT 5028' 45 Silt Siltst ClystCht 83 9821 Chromatograph (ppm) 5 Avg:Max: Depth Max C3C2C1 H2S Data Sample Line Avg: 50 7.1 Lst 3452' 3 21 10-15 Sd ShSst Type 58 C4 Tot C5 Tot CG112 Avg API Filt 9.60 80/160 Tuff Gas Breakdown 8382 YP 387 Ryan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 625 24 hr Max Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) - 24 hr Max Tuff Gas Breakdown 8434 YP 3894 API Filt - 80/160 - Lst Avg Type 116 C4 Tot C5 Tot TG348 Avg: - 10-15 9.80 Sd Sh Depth Max 55 C3C2C1 H2S Data Sample Line 25 16 CG428 137 56 8564 139 85 1196 180826 Chromatograph (ppm) 14678 20 Avg: 5028' Silt Siltst Clyst 32.90 Cht AK-AM-0008274212 - PVMBT 0 bbls Daily Charges Avg 3452' Nabors 7ES -8700' 6 07/7/2011-04:00pm 8700' North Slope BPXA 3 13-27B Prudhoe Bay (ppb Eq) 9.80 81.0 307.0 49 Current PWD Drilling Gas (units) - 8434 8564 8.5 Sst ml/30min Max:Ambient Air Pit Room cP 1069 - pH Chlorides GvlCoal -Min -Avg % - - mg/l 10.80 AvgMin Max Max 555 229 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 8471' Max @ ft 8432' Drilling Ahead Bordes/Anderson 88 8432 Flow In (gpm) Current Pump & Flow Data: 3032 2.4300 $30,502.56 R.O.P. (ft/hr) Gas (units)32 63.0 md during these connections. No Shale cavings seen at shakers but have noted minor amount of sub tabular to platy Shale cuttings (See Pic 8550'). Minor amounts of Coal cavings in samples. noticable reduction in heavier gases. This is most likely due to the multiple mud dilutions that have been done to bring the MW down to 9.8ppg as well as keep the MTB's within specs. Background gas has been ranging from 38 to 65 units with no peaks. Minor amounts of connection gas has been noted (CG130/BG48 units at 8564' Conn, CG 121/49 units at 8660' Conn). We've been of trip gas at expected calculated strokes. Gas fell off to a background of 75 units. Trip gas may have been 100 to 200 units higher as the rig was dumping fluid at the time of the highest peak causing the gas trap to lose flow. Drilling gas has been minimal with a unable to note any trends with the Connection Flow Monitor for the past 2 connections as the rig was working with the mud system All Circ Avg Diam Continued running in the hole to bottom. Lost 10bbls on trip in, potentially due to seepage . Circulated up 2057 units Depth -8.50'' Max: 2057 8432'36.45 0.840 Size DTX619M-D6 Hole Condition On Bot Hrs Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 650 24 hr Max Tuff Gas Breakdown 8434 YP 3894 API Filt 3 Sd Depth Max TG348 60 9.60 80/160 4.9 Lst 3452' H2S Data Sample Line Avg: Avg TypeC4 Tot C5 Tot CG 40 BG 8974 305 110 2 8434 9035 176 625 257 136 85 63 1196 180826 Chromatograph (ppm) 16988 8434 C3C2C1 116 40 Avg: 5679' Silt Siltst ClystSst tr Cht AK-AM-0008274212 15.0 PVMBT 0 bbls Daily Charges Avg 9.80 42.80 Max @ ft Nabors 7ES 10 PWD Drilling All Circ Avg Diam 8918' 9 07/8/2011-04:00am 9131' North Slope BPXA 13-27B Prudhoe Bay (ppb Eq) 9.80 84.5 176.5 Gas (units) 46 8434 9035 8.5 33 Max:Ambient Air Pit Room cP 1069 21 10-15 Sh - pH Chlorides GvlCoal -Min -Avg - 9.0 mg/l 10.80 AvgMin Max Max ml/30min $34,396.32 550 226 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 8952' 699' Short Trip Bordes/Anderson 228 9087' Flow In (gpm) Current Pump & Flow Data: 3175 2.4300 9130'. Begin 10 stand short trip. Running back to bottom at report time. Avg CG =110 units = 1.1% Avg BKG = 63 units = 0.63% Current R.O.P. (ft/hr) Gas (units)111 na 63 with a Trip Gas of 2100 units. Mud weight was lowered to 9.8 ppg. Drilled ahead with minor Connection Gases averaging 50 units over background gas levels to 9086' where slight increase in flow was noted. Stopped and checked for flow-neg. Drilled ahead to Max CG=130 units = 1.3% Max BKG = 228 units = 2.28% md Max STG = 2100 units = 21% Depth -8.50'' Max: Hole Condition % Continued backreaming out to 3394'. Tested Rams. Laid down Ghost Reamer. Ran in hole to 8432' and circulated 2057 On Bot Hrs 9131'42.8 130 0.840 Size DTX619M-D6 Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) - 24 hr Max Tuff Gas Breakdown API Filt 3 Sh 9575 YP 5065 Sd Depth - 80/160 - Lst 3452' 22 10-15 Type 854 C4 Tot C5 Tot GP2749 3859 H2S Data Sample Line Avg: Sst 10 22903 11577 GP C2C1 9645 3983 1103 731 Max Avg 90 Avg: Chromatograph (ppm) 5679' Silt Siltst ClystCht 42.80 AK-AM-0008274212 - PVMBT 4 bbls Daily Charges Avg 9.80 Max @ ft 84.0 (ppb Eq) 9.80 Nabors 7ES 13 PWD Drilling All Circ Avg Diam 255.0 10 07/8/2011-04:00pm 9713' North Slope BPXA 13-27B Prudhoe Bay Gas (units) - 9603 9671 8.5 cP 5806 Max:Ambient Air Pit Room 64260 167119 14763 C3 - pH Chlorides GvlCoal -Min -Avg - - mg/l 10.00 AvgMin Max Max ml/30min 2.4300 $34,396.32 553 226 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 239 9427' 582' Drilling Ahead Bordes/Anderson 3923 9650' Flow In (gpm) Current Pump & Flow Data: 3142 Current R.O.P. (ft/hr) Gas (units)527 65.0 approaching the HRZ. Gas readings appear to be influenced by the alternating periods of sliding and rotating. Formation Drilled ahead from 9131' MD to 9713' MD at the time of report. No connection gases noted since short trip. md gas ramped up while in the HRZ showing two individual peaks of 909 and 3983 units. The Connection Flow Monitor noted a minor change in pit volumes after connections but this is most likely due mud system being maintained and not flow related. Formation lithology is a Silty Shale with no cavings seen in cuttings. Continued to perform mud dilutions to keep the mud within range. Background gas crept up from 125 units at approximately 9240' to current background gas of 449 units in response to -8.50'' Max: Hole Condition % 909 On Bot Hrs 9131'51.18 0.840 Size DTX619M-D6 Depth 8918' Customer:Report #: Well:Date: Area:04:00 Depth Location:Progress 24 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 650 24 hr Max Tuff Gas Breakdown API Filt 3 9936' 9.80 57.90 8918' Sh 9670 YP 3205 Sd Depth Max H2S Data Sample Line 978 9.60 80/160 4.7 Lst 3452' 23 10-15 Type 786 C4 Tot C5 Tot BG2298 Avg: Silt Siltst Clyst BG 1008 2405 1813 313 370 23940 29494 870 CG 9744 9881 9881 910 4327 2504 3628 380 396 36285 Chromatograph (ppm) 33032 2782 C3C2C1Avg 100 Avg: Sst Cht AK-AM-0008274212 10.5 PVMBT 29 bbls Daily Charges Avg Nabors 7ES 12 PWD Drilling All Circ Avg Diam (ppb Eq) 11 07/9/2011-04:00am 10288' North Slope BPXA 13-27B Prudhoe Bay 9.80 88.4 255.0 Gas (units) 46 9744 9881 ml/30min 1575 2366 2181 Max:Ambient Air Pit Room cP 4473 BG - 708 pH Chlorides GvlCoal -Min -Avg % - 8.0 mg/l AvgMin Max Max $42,183.84 553 226 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft 9427' 1157' Circ. At TD Bordes/Anderson 3983 9651' Flow In (gpm) Current Pump & Flow Data: 3115 2.4300 Drilled ahead to TD at 10288'. HRZ did not show indications of sloughing. Began noticing up to 1" fluted and splintery shale fragments from the top of the Kingak on. Sloughing fragments appeared to diminish somewhat after the sample from 10280'. Connection gases began to increase at the top section of the Kingak with a high of 697 units over a background gas of 370 units Current R.O.P. (ft/hr) Gas (units)150 na 239 gas peak of 1004 units over a background of 325 units from picking up off bottom. Gas peak was sharp (approx 6 min) before returning to a background of 230 units. Another similar peak of 880 units occurred at TD at bottoms up from picking up off bottom. but decreased to 426 units over a background of 360 units by the connection at 10163'. CFM showed stable trends with no md ballooning or fluid losses when dumping or diluting was not occuring during connections. Interesting Note: From the top of HRZ propane peaks increased to higher levels than ethane. Avg CG = 531 Avg BKG = 344 Max CG = 697 Max BKG = 480 Drilled ahead from 6pm depth of 9713' to 10280'. Picked up and surveyed. Circulated bottoms up with a swabbed Depth -8.70'' Max: Hole Condition 102809881 On Bot Hrs 10288'57.9 697 0.840 Size DTX619M-D6 8.5 590 Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 0.840 Size DTX619M-D6 8.5 1190 On Bot Hrs 10288'57.9 Depth -8.70'' Max: Hole Condition md 40rpm. Gas has remained relatively constant at 50-60 units background, however, a peak was noted of 150 units at approximately 9195' MD. The size and consistently of the cuttings/cavings has changed from 1/4" Kingak samples to smaller fragmented HRZ/CM1 samples. The material over the shakers have remained steady throughout Mad pass. bottoms up. Noted 1190 units of gas just before compete bottoms up, most likely coming from the Kingak. Noted Kingak Shale Current R.O.P. (ft/hr) Gas (units)54 - cavings, commonly 1/4" fluted to sub tabular cavings, rarely would see 1" cavings. Began Mad pass with SLB LWD at 404gpm, Backreamed 12 stands at 40 gpm from TD to approximately 9105' MD. Ran back in the hole to TD and circulated 52 - 1157' Circ. At TD Bordes/Anderson 1190 Trip Gas Flow In (gpm) Current Pump & Flow Data: 1866 2.4300 $42,183.84 407 171 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft % - - mg/l AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg ml/30min Max:Ambient Air Pit Room cP 7076 9.80 -- Gas (units) - 10246' 12 07/9/2011-16:00 10288' North Slope BPXA 13-27B Prudhoe Bay Nabors 7ES - PWD Drilling All Circ Avg Diam (ppb Eq) Sst Cht AK-AM-0008274212 - PVMBT 29 bbls Daily Charges Avg Avg 100 Avg: 70155 Chromatograph (ppm) C3C2C1 708 Avg: Silt Siltst Clyst Type 1712 C4 Tot C5 Tot TG4142 - 80/160 - Lst 3452' - 10-15 Sh 10281' YP 5867 Sd Depth Max H2S Data Sample Line API Filt 3 9936' 9.80 57.90 8918' Ryan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) 675 12 hr Max Tuff Gas Breakdown API Filt 3 9936' 9.80 57.90 8918' Sh YP Sd Depth Max H2S Data Sample Line 9.50 80/160 4.4 Lst 3452' 22 10-15 TypeC4 Tot C5 Tot Avg: Silt Siltst Clyst Chromatograph (ppm) C3C2C1Avg 100 Avg: Sst Cht AK-AM-0008274212 12.5 PVMBT 29 bbls Daily Charges Avg Nabors 7ES 13 PWD Drilling All Circ Avg Diam (ppb Eq) 13 07/10/2011-04:00 10288' North Slope BPXA 13-27B Prudhoe Bay 9.80 -- Gas (units) 47 ml/30min Max:Ambient Air Pit Room cP - pH Chlorides GvlCoal -Min -Avg % - 8.5 mg/l AvgMin Max Max $46,077.60 400 164 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft - 0' L/D BHA Bordes/Anderson 1190 Trip Gas Flow In (gpm) Current Pump & Flow Data: 1935 2.4300 displacement while pulling out of the hole and 38 bbls total lost for past 24 hours. Current R.O.P. (ft/hr) Gas (units)- - 52 circulated 2.5X bottoms up to clean out cuttings dragged up hole. Some increase in cuttings volume noted at bottoms up with a max gas of only 138 units. Tripped out of hole to BHA. Laying down BHA at report time. We showed -28 bbls from calculated md Continued Mad pass to 7280' with 400 gpm and 1935 psi. Hole pulled tight around 7050'. Ran in hole to 7436' and Depth -8.70'' Max: Hole Condition On Bot Hrs 10288'57.9 0.840 Size DTX619M-D6 8.5 Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 0.840 Size DTX619M-D6 8.5 On Bot Hrs 10288'57.9 Depth -8.70'' Max: Hole Condition md Current R.O.P. (ft/hr) Gas (units)- - Finished laying down 8.5" drilling BHA. Tested BOPE. Rigged up to run 7" casing. Checked and cleaned gas trap. - - 0' Begin Running 7" in Hole Bordes/Anderson -- Flow In (gpm) Current Pump & Flow Data: - 2.4300 $46,077.60 - - Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft % - - mg/l AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg ml/30min Max:Ambient Air Pit Room cP 9.80 -- Gas (units) - 14 07/10/2011-16:00 10288' North Slope BPXA 13-27B Prudhoe Bay Nabors 7ES - PWD Drilling All Circ Avg Diam (ppb Eq) Sst Cht AK-AM-0008274212 - PVMBT 29 bbls Daily Charges Avg Avg 100 Avg: Chromatograph (ppm) C3C2C1 Avg: Silt Siltst Clyst TypeC4 Tot C5 Tot - 80/160 - Lst 3452' - 10-1510288' Sh YP Sd Depth Max H2S Data Sample Line API Filt 3 9936' 9.80 57.90 8918' Ryan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown API Filt 3 9936' 9.80 57.90 8918' Sh YP Sd Depth Max H2S Data Sample Line - 80/160 - Lst 3452' - 10-1510288' TypeC4 Tot C5 Tot Avg: Silt Siltst Clyst Chromatograph (ppm) C3C2C1Avg 100 Avg: Sst Cht AK-AM-0008274212 - PVMBT 29 bbls Daily Charges Avg Nabors 7ES - PWD Drilling All Circ Avg Diam (ppb Eq) 15 07/11/2011-16:00 10288' North Slope BPXA 13-27B Prudhoe Bay 9.80 -- Gas (units) - ml/30min Max:Ambient Air Pit Room cP - pH Chlorides GvlCoal -Min -Avg % - - mg/l AvgMin Max Max $49,971.36 - - Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft - 0' Running 7" in Hole Bordes/Anderson 12 - Flow In (gpm) Current Pump & Flow Data: - 2.4300 5130', 105 jnts of liner in hole with 10 units gas. Current R.O.P. (ft/hr) Gas (units)- - 10 showed 21 bbls pushed away. Ran in hole to 4105' MD and circulated casing. Ran in hole to 4515' MD and circulated. Continued running liner. Actual displacement of 22 bbls, calculated 46.5 bbls, with 4869' liner run = 24.5 bbls pushed away. Circulating at md Running 7" liner. At midnight, 89 jnts run to 3654' . Circulated X2 bottoms up before exiting window. Displacement Depth -8.70'' Max: Hole Condition On Bot Hrs 10288'57.9 0.840 Size DTX619M-D6 8.5 Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 0.840 Size DTX619M-D6 8.5 On Bot Hrs 10288'57.9 Depth -8.70'' Max: Hole Condition md Continued running in the hole on 4" drill pipe while filling every 5 stands. Ran in the hole to approximately 9300' MD and currently circuating bottoms up at the time of report with a max gas of 260 units. Noting minimal material to shakers consisting of 0.25mm to 0.50mm size fragments of Siltstone, Claystone, loose Sand, and Coal. No distinct cavings seen. and no cuttings over the shakers. Ran all of the 7" casing in the hole and changed over rig floor equipement to run in to bottom Current R.O.P. (ft/hr) Gas (units)270 - with 4" drill pipe. Circulating mud system noting 156 units of max gas which fell out to 46 units when the pumps were shut down. Continued running 7" casing in the hole. Circulated the hole at approximately 8130" MD with 291 units of max gas 50 - 0' Running 7" casing in hole Bordes/Anderson 291 - Flow In (gpm) Current Pump & Flow Data: 290 2.4300 $49,971.36 84 35 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft % - - mg/l AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg ml/30min Max:Ambient Air Pit Room cP 10.10 -- Gas (units) 55 16 07/11/2011-16:00 10288' North Slope BPXA 13-27B Prudhoe Bay Nabors 7ES - PWD Drilling All Circ Avg Diam (ppb Eq) Sst Cht AK-AM-0008274212 - PVMBT 29 bbls Daily Charges Avg Avg 100 Avg: Chromatograph (ppm) C3C2C1 Avg: Silt Siltst Clyst TypeC4 Tot C5 Tot - 80/160 - Lst 3452' - 10-1510288' Sh YP Sd Depth Max H2S Data Sample Line API Filt 3 9936' 10.00 57.90 9299' Ryan Massey / Tom Mansfield Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield 1-3-WT-S-X-I-CT-TD Ann Corr Cor Solids (lb/100ft2) 675 12 hr Max Tuff Gas Breakdown API Filt 4 1856' 9.80 25.30 9299' Sh YP Sd Depth Max H2S Data Sample Line 9.40 100 4.6 Lst 8432' 16 1210288' TypeC4 Tot C5 Tot Avg: Silt Siltst Clyst Chromatograph (ppm) C3C2C1Avg 100 Avg: Sst Cht AK-AM-0008274212 12.5 PVMBT Daily Charges Avg Nabors 7ES 13 PWD Drilling All Circ Avg Diam (ppb Eq) 17 07/12/2011-04:00 10288' North Slope BPXA 13-27B Prudhoe Bay 9.80 -- Gas (units) 50 ml/30min Max:Ambient Air Pit Room cP - pH Chlorides GvlCoal -Min -Avg % - 8.0 mg/l AvgMin Max Max $53,865.12Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft - 0' Cementing Bordes/Anderson 518 circ @ 10288 Flow In (gpm) Current Pump & Flow Data: 2.4300 Current R.O.P. (ft/hr) Gas (units)160 - 220 running in the hole to bottom. Circulated and conditioned mud prior to cement job with a maximum of 518 units of gas, average of 220 units. No notable cuttings returned. Cemented 7" liner. Pressure test. md Ran in hole with 7" liner circulating one bottoms up before entering the HRZ with 315 units maximum gas. Continued Depth - Max: Hole Condition On Bot Hrs 0.840 Size DTX619M-D6 8.5 Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 0.840 Size DTX619M-D6 8.5 On Bot Hrs -- Depth -- Max: Hole Condition md Current R.O.P. (ft/hr) Gas (units)- - Continued to test BOPE. Ready equipement for Production Hole Interval. - - 0' Testing BOPE Bordes/Anderson -- Flow In (gpm) Current Pump & Flow Data: - 2.4300 $53,865.12 - - Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft % - - mg/l AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg ml/30min Max:Ambient Air Pit Room cP - -- Gas (units) - 18 07/12/2011-16:00 10288' North Slope BPXA 13-27B Prudhoe Bay Nabors 7ES - PWD Drilling All Circ Avg Diam (ppb Eq) Sst Cht AK-AM-0008274212 - PVMBT - Daily Charges Avg Avg 100 Avg: Chromatograph (ppm) C3C2C1 Avg: Silt Siltst Clyst TypeC4 Tot C5 Tot - 100 - Lst 8432' - 1210288' Sh YP Sd Depth Max H2S Data Sample Line API Filt 4 1856' - 25.30 - Ryan Massey / Tom Mansfield 1-3-WT-S-X-I-CT-TD Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 0.840 Size DTX619M-D6 8.5 On Bot Hrs -- Depth -- Max: Hole Condition md Current R.O.P. (ft/hr) Gas (units)- - Change out Annular Bag. Finished testing BOPE. Top of liner at 3248' MD. Test casing to 3500 psi for 30 min. - - 0' Testing BOPE Bordes/Anderson -- Flow In (gpm) Current Pump & Flow Data: - 2.4300 $57,758.88 - - Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft % - 8.0 mg/l AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg ml/30min Max:Ambient Air Pit Room cP 9.80 -- Gas (units) 52 19 07/13/2011-04:00 10288' North Slope BPXA 13-27B Prudhoe Bay Nabors 7ES 14 PWD Drilling All Circ Avg Diam (ppb Eq) Sst Cht AK-AM-0008274212 12.5 PVMBT - Daily Charges Avg Avg 100 Avg: Chromatograph (ppm) C3C2C1 Avg: Silt Siltst Clyst TypeC4 Tot C5 Tot 9.40 100 5.2 Lst 8432' 15 1210288' Sh YP Sd Depth Max H2S Data Sample Line API Filt 4 1856' 9.80 25.30 10288' Ryan Massey / Tom Mansfield 1-3-WT-S-X-I-CT-TD Ann Corr Cor Solids (lb/100ft2) 700 12 hr Max Tuff Gas Breakdown Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air On Bot Hrs -- 0.389 0.840 Size DTX619M-D6 8.5 Began picking up drill pipe and singling in the hole. At 3505' MD, continued running in the hole with 4" drill pipe from Depth -- Max: Hole Condition derrick. Slipped and cut drill line. Ready to displace the well with 8.5ppg FLOPRO Fluid at the time of report. md Current R.O.P. (ft/hr) Gas (units)- - - Displacing Well Bordes/Anderson -- Flow In (gpm) Current Pump & Flow Data: 1677 2.4300 $57,758.88 199 82 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft - % - - mg/l AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg - ml/30min Max:Ambient Air Pit Room cP - 9.80 -- Gas (units) - 20 07/13/2011-16:00 10288' North Slope BPXA 13-27B Prudhoe Bay 0' Nabors 7ES - - PWD Drilling All Circ Avg Diam (ppb Eq) Sst Cht AK-AM-0008274212 - PVMBT - Daily Charges Avg 100 Avg: Chromatograph (ppm) C3C2C1Avg Avg: -6.125 Silt Siltst Clyst TypeC4 Tot C5 Tot - - 100 - Lst 8432' - 1210288' Sh YP Sd Depth Max H2S Data Sample Line API Filt 4 5 MX-18HDX 1856' 9.80 10288' 0.00 25.30 10288' Ryan Massey / Tom Mansfield 1-3-WT-S-X-I-CT-TD Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air 0.840 Size DTX619M-D6 8.5 On Bot Hrs 10350'1 0.389 Depth -6.13'' Max: Hole Condition md EMW. Drilling ahead. Current R.O.P. (ft/hr) Gas (units)130 30.0 Displaced well to FLOPRO drilling fluid. Drilled shoe plus 20' of formation to 10308' and performed FIT to 10 ppg 25 10351' 62' Drilling Ahead Bordes/Anderson 130 10335' Flow In (gpm) Current Pump & Flow Data: 1975 2.4300 $61,652.64 250 103 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft % - - mg/l AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg - ml/30min Max:Ambient Air Pit Room cP - 8.50 30.0 58.0 Gas (units) - 21 07/14/2011-16:00 10350' North Slope BPXA 13-27B Prudhoe Bay Nabors 7ES - - PWD Drilling All Circ Avg Diam (ppb Eq) Sst Cht AK-AM-0008274212 - PVMBT 0 bbls Daily Charges Avg Avg 100 Avg: Chromatograph (ppm) C3C2C1 Avg: -6.125 Silt Siltst Clyst TypeC4 Tot C5 Tot - - 100 - Lst 8432' - 1210288' Sh YP Sd Depth Max H2S Data Sample Line API Filt 4 5 MX-18HDX 1856' 8.50 10288' 0.00 25.30 10288' Ryan Massey / Tom Mansfield 1-3-WT-S-X-I-CT-TD Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In Air On Bot Hrs 10350'6.69 0.389 0.840 Size DTX619M-D6 8.5 431 Continued drilling ahead to 10761' MD. Background gas increased gradually from 50 units to 300 units to 350 units. Depth -6.13'' Max: Hole Condition A gas peak of 431 units was noted. There were no flows on connections noted as well as no connection gases. Shale cuttings were soft to very hard and brittle. No cavings noted. Sperry SDL was released as of 15:20 this afternoon and have commenced md rigging down. Final Report for 13-27B Current R.O.P. (ft/hr) Gas (units)- - 207 POOH Bordes/Anderson 431 10642' Flow In (gpm) Current Pump & Flow Data: 1975 2.4300 $61,652.64 250 103 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $3,893.76 Max @ ft 10732' % - - mg/l AvgMin Max Max- pH Chlorides GvlCoal -Min -Avg - ml/30min Max:Ambient Air Pit Room cP - 1426 8.50 119.0 333.0 Gas (units) - 10654' 22 07/14/2011-16:00 10761' North Slope BPXA 13-27B Prudhoe Bay 411' Nabors 7ES - - PWD Drilling All Circ Avg Diam (ppb Eq) Sst 10 Cht AK-AM-0008274212 - PVMBT 0 bbls Daily Charges Avg 530 Avg: 402 40142 Chromatograph (ppm) C3C2C1Avg Avg: 55 -6.125 Silt Siltst Clyst Type 273 C4 Tot C5 Tot PG627 - - 100 - Lst 8432' - 1210288' Sh 10635' YP 2758 Sd Depth Max H2S Data Sample Line API Filt 4 5 MX-18HDX 1856' 8.50 10288' 0.00 25.30 10288' Ryan Massey / Tom Mansfield 1-3-WT-S-X-I-CT-TD Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown Customer:Report #: Well:Date: Area:16:00 Depth Location:Progress 12 hrs: Rig:Rig Activity: Job No.:Report For: ROP & Gas: . Mud Data:Density (ppg)Viscosity Depth ft in out (sec/qt) BHA Run #Bit Type TFA Hours Depth in / out Footage WOB RPM Condition Lithology (%): (current) to to to to to to to to to Gas Type abreviations: BG - Background Gas; GP - Gas Peak; CG - Connection Gas; WTG - Wiper Trip Gas; POG - Pumps Off Gas; PG - Produced Gas; RG - Ream Gas; T-- - Trip…; F-- - Formation…; E-- - Early… 24 hr Recap: Logging Engineer:*10000 units = 100% Gas In AirRyan Massey / Tom Mansfield 1-3-WT-S-X-I-CT-TD Ann Corr Cor Solids (lb/100ft2) - 12 hr Max Tuff Gas Breakdown API Filt 4 5 MX-18HDX 1856' 8.50 10288' 0.00 25.30 10288' Sh YP Sd Depth Max H2S Data Sample Line - - 100 - Lst 8432' - 1210288' TypeC4 Tot C5 Tot Avg: 55 -6.125 Silt Siltst Clyst Chromatograph (ppm) C3C2C1Avg 530 Avg: Sst 10 Cht AK-AM-0008274212 - PVMBT 0 bbls Daily Charges Avg Nabors 7ES - - PWD Drilling All Circ Avg Diam (ppb Eq) 23 07/15/2011-04:00 10761' North Slope BPXA 13-27B Prudhoe Bay 8.50 119.0 333.0 Gas (units) - ml/30min Max:Ambient Air Pit Room cP -- - pH Chlorides GvlCoal -Min -Avg % - - mg/l AvgMin Max Max $64,480.56 250 103 Total Charges: Flow In (spm) SPP (psi) Gallons/stroke $2,827.92 Max @ ft 10732' 0' RIH Bordes/Anderson 431 10642' Flow In (gpm) Current Pump & Flow Data: 1975 2.4300 Final Report for 13-27B Current R.O.P. (ft/hr) Gas (units)- - 207 md Post release. Cost report only. Depth -6.13'' Max: Hole Condition On Bot Hrs 10350'6.69 0.389 0.840 Size DTX619M-D6 8.5 W E L L N A M E : 13 - 2 7 B LO C A T I O N : Pr u d h o e B a y U n i t OP E R A T O R : BP E x p l o r a t i o n A l a s k a , I n c . AR E A : No r t h S l o p e MU D C O : MI S w a c o ST A T E : Al a s k a RI G : Na b o r s 7 E S SP U D : 26 - J u n - 1 1 SP E R R Y J O B : AK - A M - 8 2 7 4 2 1 2 TD : 16 - J u l - 1 1 BI T RE C O R D BH A # B i t # B i t T y p e B i t Si z e De p t h In De p t h Ou t Fo o t a g e B i t Ho u r s TF A A V G RO P WO B (m a x ) RP M (m a x ) SP P (m a x ) FL O W G P M (m a x ) Bi t G r a d e R e m a r k s 3 1 H y c a l o g D T X 6 1 9 M - D 6 8 . 5 0 3 4 5 2 8 4 3 2 4 9 8 0 3 3 . 4 0 0 . 8 4 0 0 1 4 9 . 1 12 10 0 3 0 0 0 5 5 0 N / A L / D G h o s t R e a m e r 4 1 r r H y c a l o g D T X 6 1 9 M - D 7 8 . 5 0 8 4 3 2 1 0 2 8 8 1 8 5 6 2 5 . 3 0 0 . 8 4 0 0 7 3 . 4 12 10 0 3 2 5 0 5 5 0 1 - 3 - W T - S - X - I - C T - T D T D 8 1 / 2 " H o l e S e c t i o n 5 2 M X - 1 8 H D X 6 . 1 3 1 0 2 8 8 1 0 7 6 1 4 7 3 6 . 7 0 0 . 3 8 9 0 7 0 . 6 20 58 2 5 9 1 2 6 7 N / A D r il l B u i l d S e c t i o n ; R e l e a s e d B e f o r e B i t a t S u r f a c e W E L L N A M E : 13 - 2 7 B LO C A T I O N : Pr u d h o e B a y U n i t OP E R A T O R : BP A l a s k a AR E A : No r t h S l o p e MU D C O : MI S w a c o ST A T E : A la s k a RI G : Na b o r s 7 E S SP U D : 26 - J u n - 1 1 SP E R R Y J O B : A K- A M - 8 2 7 4 2 1 2 TD : 16 - J u l - 1 1 W a t e r B a s e d M u d R e c o r d Da t e D e p t h W t V i s P V Y P G e l s F i l t R6 0 0 / R 3 0 0 / R 2 0 0 / R 1 0 0 / R6 / R 3 Ca k e S o l i d s Oi l / W a t e r Sd P m p H M B T P f / M f C h l o r H a r d R e m a r k s ft - M D p p g s e c c P l b / 1 0 0 l b / 1 0 0 f t 2 m / 3 0 m R h e o m e t e r 3 2 n d s % % % p p b E q v m g / l C a + + 3- J u l 3 9 6 6 1 0 . 0 0 4 5 9 2 3 1 0 / 1 1 / 1 2 6. 3 4 1 / 3 2 / 2 7 / 2 1 / 1 0 / 8 1 / - 8 . 0 2 / 9 0 t r 0. 2 0 9 . 4 1 . 5 . 1 5 / 1 . 2 8 0 0 2 0 D r ill 8.5" hole 4- J u l 6 4 0 8 1 0 . 0 0 4 7 1 2 2 3 9 / 1 2 / 1 4 7. 7 4 7 / 3 5 / 2 9 / 2 2 / 9 / 8 2 / 2 1 0 . 0 3 / 8 7 t r 0. 3 0 9 . 6 1 2 . 5 . 2 0 / 1 . 1 0 8 2 5 2 0 D r ill 8.5" hole 5- J u l 8 3 8 7 1 0 . 0 0 4 7 1 2 2 4 8 / 1 1 / 1 4 4 . 8 4 8 / 3 6 / 3 0 / 2 2 / 9 / 7 2 / 2 9 . 0 3 / 8 8 t r 0 . 3 0 9 . 6 1 2 . 5 . 2 5 / 1 . 3 0 8 5 0 3 0 M o n i t o r W e l l 6- J u l 8 4 3 2 9 . 8 0 4 5 9 2 1 7 / 8 / 1 1 4 . 7 3 9 / 3 0 / 2 3 / 1 8 / 8 / 6 1 / 2 8 . 0 3 / 8 9 t r 0 . 2 5 9. 6 1 5 . 0 . 1 5 / 1 . 3 0 6 2 5 3 5 B a c k R e a m 7- J u l 8 9 1 8 9 . 8 0 4 6 1 0 2 1 8 / 9 / 1 1 4. 9 4 1 / 3 1 / 2 3 / 1 8 / 9 / 7 2 / 2 9 . 0 3 / 8 8 t r 0. 2 5 9 . 6 1 5 . 0 . 2 0 / 1 . 3 0 6 5 0 3 0 D r ill 8.5" hole 8- J u l 1 0 0 0 7 9 . 8 0 4 6 1 2 2 3 8 / 1 1 / 1 4 4. 7 4 7 / 3 5 / 2 9 / 2 2 / 9 / 8 2 / 2 8 . 0 3 / 8 9 t r 0. 2 5 9 . 6 1 0 . 5 . 2 0 / 1 . 6 0 6 5 0 3 0 D r ill 8.5" hole 9- J u l 1 0 2 8 8 9 . 8 0 4 7 1 3 2 2 8 / 1 1 / 1 4 4. 4 4 8 / 3 5 / 2 9 / 2 2 / 9 / 8 2 / 2 8 . 5 3 / 8 9 t r 0. 2 5 9 . 5 1 2 . 5 . 3 0 / 1 . 8 0 6 7 5 3 0 P O O H 10 - J u l 1 0 2 8 8 9 . 8 0 4 7 1 3 2 2 9 / 1 1 / 1 3 4 . 4 4 8 / 3 5 / 2 9 / 2 2 / 9 / 8 2 / 2 8 . 5 3 / 8 9 t r 0 . 2 5 9 . 4 1 2 . 5 . 3 0 / 1 . 8 0 6 7 5 3 0 R u n 7 " l i n e r 11 - J u l 1 0 2 8 8 9 . 8 0 5 0 1 3 1 6 7 / 8 / 1 0 4 . 6 4 2 / 29 / 2 4 / 1 7 / 6 / 5 2 / 2 8 . 0 3 / 8 9 t r 0 . 2 0 9. 4 1 2 . 5 . 3 0 / 1 . 7 0 6 7 5 3 0 C i r c u l a t i n g f o r C e m e n t J o b 12 - J u l 1 0 2 8 8 9 . 8 0 5 2 1 4 1 5 7 / 8 / 9 5 . 2 4 3 / 2 9 / 2 3 / 1 7 / 6 / 5 2 / 2 8 . 0 3 / 8 9 t r 0 . 2 0 9. 4 1 2 . 5 . 2 5 / 1 . 6 0 7 0 0 3 0 T e s t B O P E 13 - J u l 1 0 3 0 8 8 . 4 0 5 2 6 2 3 1 2 / 1 4 / 1 5 1 0 . 0 3 5 / 2 9 / 26 / 2 3 / 1 2 / 1 1 1 / - 1 . 0 1 . 5 / 9 7 . 5 0 . 0 0 1 . 0 0 9 . 9 0 . 1 1. 1 0 / 4 . 8 0 5 , 0 0 0 6 0 C h g o v e r t o F L O P R O SF - Drill Ca s i n g R e c o r d 9. 6 2 5 " S u r f a c e - K i c k o f f S i d e t r a c k @ 3 4 0 4 ' ( 3 3 8 6 ' T V D ) 7. 0 " I n t e r m e d i a t e @ 1 0 2 8 6 ' ( 8 9 1 1 ' T V D ) Marker MD TVD TVDSS TOW 3404 3386 3305 BOW 3421 3402 3321 SV2 3504 3481 3400 SV1 3920 3871 3790 UG4 4752 4535 4454 UG4A 4825 4592 4511 UG3 5010 4731 4650 UG1 5875 5378 5297 WS2 6663 5965 5884 WS1 7020 6231 6150 CM3 7302 6444 6363 CM2 8111 7055 6974 CM1 9027 7792 7711 THRZ 9460 8187 8106 BHRZ 9670 8374 8293 Fault 1 9680 8382 8301 LCU/TKNG 9744 8438 8358 TJD 9800 8487 8406 TJB 10061 8716 8635 TJA 10184 8823 8742 Proj SGR 10285 8912 8831 TD 10288 8915 8834 13-27B Interpolated Tops 2000 3000 4000 5000 6000 D ep t h 13-27B Prudhoe Bay Unit Begin drilling 8 1/2" hole out of 9 5/8" window at 3404' MD 13:00 hrs on 7/3/2011 Sperry Mudlogging Rep. Arrived 6/26/2011 7000 8000 9000 10000 11000 12000 02468 1 0 1 2 1 4 1 6 1 8 2 0 Me a s u r e d D Rig Days Drill out 7" liner with 6 /18" bit.21:30 on 7/13/2011 Sperry Mudloggers released 13:00 hrs Mud losses at 8432' MD, Short Trip TD 8 1/2" section at 10288' MD. Set Liner at 10286' MD