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210-092
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. (Q .1 0 - 0 9a Well History File Identifier Organizing (done) ❑ Two-sided JUL11 III IIIU ❑ Rescan Needed I I IIIIU liii RE AN DIGITAL DATA OVERSIZED (Scannable) Color Items: ❑ Diskettes, No. ❑ Maps: Greyscale Items: ❑ Other, No/Type: ❑ Other Items Scannable by a Large Scanner ❑ Poor Quality Originals: OVERSIZED (Non-Scannable) ❑ Other: ❑ Logs of various kinds: NOTES: ❑ Other:: . BY: Maria Date: `taiVI /s/ Project Proofing 11111111111111 BY: Maria Date: I Igq I if. /s/ r Scanning Preparation 5 x 30 = 50 + ' = TOTAL PAGES / (lam t�Count does not include cover sheet) 0 BY: C Maria Date: l �$ / /s/ ',` Production Scanning I Stage 1 Page Count from Scanned File: 1 l 2 01, (Count does include cover sheet) Page Count Matches Number in Scanning Pr paration: YES NO BY: Date: /c '3' JI ILt. /s/ fk1f Stage 1 If NO in stage 1, page(s) discrepancies were ound: YES NO BY: Maria Date: /s/ Scanning is complete at this point unless rescanning is required. 11111111111111111 ReScanned 'H11111111111111 BY: Maria Date: /s/ Comments about this file: Quality Checked 1 01111111111111 17/99Ml111 1A/.II{-licrnn,R I rn„cr o•nnn rinn o w w p C .y .N .N O 0) Fs t O(n co 2 1 03 V N C N O C p C ' J T In III W CO fa c ,0'O .O (a c -C v •p N c «-p 2 - V '88 e°_ Z O rn (D c o rn a) c rn a) c E L o f N N _ O E IC-J N p 0 T. E E.j N N 2 y O E 6. J N p y O c,_ U T- N >- , ac3 CO 2•� 2 a° c m •',7,' ° aga CU 2 �:..c. aga 0 ZU aai0 a3a a Ow -- y E a m o ww'E o m c O m ° to.2 oo m e a m o to'al E oo m e co EO O t >. N E o Ow �,�U o a�.ow a,�U p O ow a, U a my o co C O Z N O C O Z N a a3 ] N°.-CD. Q O Z a o U O mC�� fOJF t o > a)C9� '�JI-t o` 0 o05 o�H,c o 3- a p Ce IT co c 2aaw5QUF-2 I-aaw5aUI-2 2a0w5QUH20 2J act Q To o s cC > T T .- T lo a T a 0 0 0 0 0 J � V N N N N N y Z• T J T T E T T q W O C C C C C 7 a� a3 m o a3 a O U Oa O O O O a ' m a °m W co W 0 oo O Z o O O O O O O W o c t!v v v Ce CO �p N O 0 a U) M M M W W J U m o Z I T c Q O Ce Z e N a J a m a7 a N O o ZI J U U • r _ N N m a a3 8 II in Ti. Z p v 1N N N U � co o ....1 U) U) J U w N j Z Q T Q CO ao 1 — L H a G = N Ct Q N m m � ! 0 o a3 p CO o o , o Q = c a CO I— a a) LU co a o w Q Z E ZI a w w o o` 0 0 > > > co is d U 1 p 0 N iq u3 O O E J y N N co as CO !a)Y aEC a) Z 7 O O C C C U U y of O O O co L. e Z C C C N co w U U N O Z J L. a3 N co N O ., w a ~ d d N 7 N 0 2 O O w W 0 Z F. . O € '�3 E y O O O O V C a= J J 2 r- w LL N rn Be =+ Z W O \U 0 \ Q V) J 'V N O T d Q T O O a O W Q J J W -J Ill a o F s J o H ■ to 9 c el C fa c w- in E O J I t0 0 .c D ) N Z u_ a) E m N U O a) LL a)O L to 1 0 0 0 a 1 O c � 0 ' 0 `� c x Z c) A V 0 >c.J P4 a 20 pox a O o F J N (.1 r r Z — O O 4 C a) y m a a E 0 I— < cn O 0 0 0 Ce a O ` Z g M r°, m m z CL P p U a � a Ev) E lira, LV ga i0 z' ce 0 N N W w > !. J a1 U m o d ID y Z 8 0 o Q c 0 H w 0 c y 7 4 O p cn c ?., E CL N c d .r `o G C u N O o E N U = 0 J N Q1 I I." v d • 0 C N m a CO N rn o a) 2 CO X • 0 Q o a Z E w? 11' IV F- ~ Z C c TD 0 • N- a) 0 E E c p Q co la O N y } d N a) IX o. E Z y E O -\ N E R J > Q'' D °p 0 N Z Q 0 v 0 Z U c`• c - \V o p 0 w a°i aa) 1 R E 0 o 0 >.,• E 0 D a 2 -J w 3 Q U QW U U STATE OF ALASKA • AL :A OIL AND GAS CONSERVATION COMM. ON REPORT OF SUNDRY WELL OPERATIONS 1.Operations Abandon U Repair Well U Plug Perforations U Perforate U Other I L I Straddle Patch Performed: Alter Casing ❑ Pull Tubing❑ Stimulate-Frac ❑ Waiver ❑ Time Extension❑ Change Approved Program ❑ Operat.Shutdown❑ Stimulate-Other ❑ Re-enter Suspended Well❑ 2.Operator 4.Well Class Before Work: 5.Permit to Drill Number: Name: BP Exploration(Alaska),Inc Development 0 Exploratory ❑ 210-092-0 • 3.Address: P.O.Box 196612 Stratigraphic Service ❑ 6.API Number: Anchorage,AK 99519-6612 50-029-21615-03-00 • 7.Property Designation(Lease Number): 8.Well Name and Number: ADL0028322 1 bt .002 5"Ll PBU 18-12C • 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 17080 feet Plugs measured None feet NOV 4 1 2013 true vertical 8597.24 feet Junk measured 16973 feet Effective Depth measured 16983 feet Packer measured See Attachment feet AOGLgC true vertical 8607.91 feet true vertical See Attachment feet Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20"91.5#H-40 39-119 39-119 1490 470 Surface See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Intermediate None None None None None None Production 3228 9-5/8"47#L-80 36-3264 36-3066.14 6870 4760 Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation depth Measured depth 13970-13972 feet 14550-14700 feet 14850-16000 feet 16350-16380 feet 16448-16478 feet 16560-16590 feet 16870-16900 feet 16920-16950 feet True Vertical depth 8542.73-8543.98 feet 8650.61-8657.57 feet 8655.16-8632.79 feet 8628.15-8626.92 feet 8624.92-8624.25 feet 8622.62-8621.95 feet 8613.73-8612.73 feet 8611.85-8610.21 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13Cr85 34-13387 34-8080.38 Packers and SSSV(type,measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 989 4903 1837 0 359 • Subsequent to operation: 1016 4829 1887 0 341 14.Attachments: 15.Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development El • Service❑ Stratigraphic ❑ Daily Report of Well Operations X 16.Well Status after work: Oil p . Gas U WDSPLU GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUG❑ 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: N/A Contact Garry Catron Email Garry.Catront BP.Com Printed Name Garry Catron Title PDC PE Signature Phone 564-4424 Date 11/20/2013 Form 10-404 Revised 10/2012 f1jq #9. Submit Original Only LL L. = N 4) w c' dO N (UO a0 r. Haa C.) Lu 0 0 QYaZHH n- ZJYY aXX W Y N N N Y N 2 m m m = m CV (V fV CV CD L C.) 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O L.L. ® , ® ,H F / _ _ 2 E o N. D I e •w \ t 0 b ® " I E ® & £ • o b e ,, Et 2 G E. w o b m 0 0)-:_- 0 .=-715_- . < 00 3 / ± 3 / b 2 g ¥ R k \ y ® c % O e a 6 E m w e g e _© & \ \ % ƒ H O H o / / \ C / / q 0 \ z z / 2 \ mi \ \ ƒ 0 • = 0 2 4 + 2 •- 0 2 t = L R R $ O O R _G e R C L L < ± E \ / $ f - 0 / E \ \ / / \ CC / / / Et / / / \ / / � / / I : I 0 CC I = : I 0 « : : 0 0 0 : t 0@ : 0 R : : 0 : co co co co Co co \ \ CD \ \ \ N 6 a 6 co 3 N m N O \ / 0 6 @ H $® o_ / 5 / k / L if) \ \ \ k / § '& 2 E co __ 0 E a R b p .R a 2 \ < co J I co = r 2 m ± I- o C) \ . / / ° w k e ° 2 < § / 7 \ ƒ 0 \ < / < w I Z E H % 0 / ' 9 S 1--- E 2 co Z m . < ± ® 0 \ k ? Z / H \ t § o LoCt CO Lii W CL % Z / / .2 0 \ / / ) 2 R 92 Li) I a Es z w/ / 0H / \ / / Z F-- LL- / \ \ � \ / O N - 0 Z E / 0 0 -j Z - Z > = Z > N - 4 0 2 R ± E G E ƒ O ® w w a) to \ / ' - \ 7 0 co / / k/ / R o A co 2 L b a Z 2 O o 0 0 CL 0 / / \ / CO 0_ 2 .. 2 / 2 LIS > <II 5 / < '' <II 0 < O g UJ (0 U ± E \ « : Z 0 O / / O a % O / O o Q 3 2 w d m CL 3 - - CO L E O ± 2 < © B < © © _< Ce 2 0coH / \ \ � � � 0 / 0 < ii d �� / � / ( \ ƒ p\ \ < © Z < D \ - E ® 0 2 I I § O II 2 o II ■ \ E \ R a U) .,---7Z1' E (D 2 - 0 o 2 f 2 $ 2 D L R ± $ 0 < 1_ / \ < Z / k Z z ° > / > k \> - a < 0 = < \ / \ 0_ k \ I / / E / \ / \ - / \ \ / R ± I R a ± ° x 0 0 2 ¥ 2 \ g c _ _c o Z + m o O / r f / / -) r - L -I o = o $ o § O < w R il O O - L -J R R & e m o = \ / e \ / \ / / » ƒ m m z \ _i \ 3 2 Z ¥ \ 6 LU / / O \ \ Q / / O % ƒ / 7 / 2 % - - J0 $ ® / ° / \ / w $ O © ii 0 - ii O m ii i ƒ ƒ w -ƒ \ / \ / ) / / { i / $ 2 3 } / / / / \ $ / / $ co co co co CO / \ \\ \/ \ / \ / - \ CO 6 0 0 = - » • TREE= 4-1/16"CM/ ACTUATOR= BAKE C 1 8-1 2C ORIGINAL, I A&B WELBORES NOT SHOWNBBOW OKB.ELEV= 4T 9-5/8"WHPSTOCK0 3264"•"• BF.E.EV= 23.8' 1 K i [1 OP= 1200' 13-3/8"CSG, H 109' J Max Angle= 97°@ 17080' 68#,K-55, Datum MD= WA ID=12.415" ' 2050' —14-1/2"HES X NP,D=3.813" Datum TVD= 8800'SS 20-"CONDUCTOR,91.5#,H-40,ID=19.124" H 110' 13-3/8"CSC,,72#,L-80,ID=12.347" --I 2830' �--� 3103' 9-5/8"X 7"BKR ZXFN LTP"w/10'TIEBACK, 9-5/8"CSG,47#,L-80 SMLS R3 BUTT,ID=8.681" — —3264 \ T &BKR FLEX LOCK HGR,D=6.180" 9-5/8"WHIFSTOCK(08/19/11) —I 3264' ----- , 9-5/8"EZSV(08/18/11) —1 3285' MLLOUT WINDOW(18-12C) 3264'-3281" N GAS LFT MANDRELS ST MD ND DEV TYPE VLV LATCH FORT DATE 3 4185 3710 59 KBG2 DOME BK 16 09/14/12 2 9120 5796 65 KBG2 DOME BK 16 09/14/12 Minimum ID = 1.35" @ 13957' 1 11996 7012 62 KBG2 SO BK 24 09/14/12 2-7/8" ORIFICE MANDREL SET IN CMD SLDG SLV 1 , 13234' I-4-1/2"FESX1P,D=3.813" B s•—• 13263' --I 7"X4-1/2'F ES TNT FKR D=3.856' I ' , 13298' I—I4-1/2"FE_S X NP,D=3.813' I , 13375' 1-14-1/2"HES XN NP,D=3.725" 4-112"TBG, 12.6#,13CR-85 VAM TOP, —I 13386' .0152 bpf,D=3.958" 13381' —17"X 4-1/2"BKR HRD-E ZXPN LTP,D=4.250" 7"CSG,26#, L-80 VAM TOP HC, — 13539' .0383 bpf,D=6.276" 13387' 4-1/2"WLEG,C.=4.100" HELM)TT NOT LOGGED PERFORATION SUMMARY 13398' I-17"x4-1/2-BKR FLEX LOCK HGR,D=4.190" I REF LOG: WWVLYNGP GR/ROP ON 06/28/05 • C. TE-IN LOG: GEOLOGY PDC LOG m ' 13952' -13983'I 4-112.BKR STRADDLE PATCH,ID=2.313" ANGLE AT TOP PERE: 52°@ 13970' (10/26/13) ic. lc Note:Refer to Production DB for historical perf data SIZE SFF INTERVAL Opn/Sqz SHOT SOZ — 13967' 2-7/8"ORIFICE MANDREL w/2 EA.188"FORTS 2" 6 13970- 13972 0 10/26/13 SET N CMD SLIDING SLV(OPEN),D=1.35' 2-7/8' 6 14550- 14700 0 09/23/11 (10/28/13) 2-7/8" 6 14850- 16000 0 09/23/11 3-3/8" 6 16350- 16380 0 01/09/12 I 3-3/8" 6 16448- 16478 0 01/09/12 3-3/8" 6 16560- 16590 0 01/09/12 2-7/8" 6 16870- 16900 0 06/28/12 2-7/8' 6 16920- 16950 0 06/27/12 ihiti1 16973'CTM FISH 3.7"CT NOZZLE w/CROSS OV ERS ON TOP,OAL=1.86'(06/27/12) PBTD —I 16973'CTM ►�i�i�i•i 4-1/2' LW, 12.6#,L-80 TCI,.0152 bpf,D=3.958" H 17071' AA,AAA DATE REV BY COMMENTS DATE REV BY COMMENTS FRUDHOE BAY UNIT 12/23/86 ORIGINAL COMPLETION 11/06/13 SWC/JM?ADPERF/PATC ISLD SLV(10/26-28 WELL: 18-12C 11/08/97 CTD SIDETRACK(18-12A) 11/12/13 SET/JMD REFERENCE DEPTH CORRECTIONS PERMIT No:. 100920 07/04/05 NORDIC1 CTD SIDETRACK(18-12B) API No: 50-029-21615-03 09/27/11 D-25 CTD SIDETRACK(18-12C) SEC 19,T11N,R15E 1166'FIt&403'FWL 10/14/11 DGDY PJC FNAL DRLG CORRECTIONS 01/13/12 JJUJI043 ADPERFS 90'(01/09/12) t BP Exploration(Alaska) "LW ' U`I L 0 cV 0 O to om , M .- i O g v 0 Q .017 O O D O O D O O O O D O 0 cn 1 U U U U U O O O O O O O O I E K '\ "„4 H 0 r Q '�•!� cd of e' z 4),-- O '' r , i .- r r Q 4 N 0 c a - CL • E. U 5 i v m • Q w G z •o_n rn rci W 0 c4 �n x W Q �J �`,\ i N Q coo ej a E'..1 CIO p' L7 y 7 = 7 > > > to m Q , v o / cd cd t--+ O rn ? "� -� -.� v .c ^ .Xi F`.., 0 N r 4 co ap 4 OD N N OD 1� (c _ u co 03 z m Q M N N r N 5 Q X a U J • N N Nf. U Z N ~ CO In CL U ) Cl) • LL LL LL LL LL. LL LL LL LL LL 0 0 0 0 0 0 0 0 0 0 , I- F- I- I- H I- I- I- I- I- a O D O D O D 0 0 0 0 a. w w w w w w w w w w CI O C7 C7 U' 0 U C7 U' 0 J J D G O G D D O 0 0 0 J J J J J J J J J J rL 2 O „; I-- E f M O -1 wO 1 ea Q X X X X X X X X X X X X m N , ii H N W Z X O• I- I 1 H j N CA . CID r CD .a QD CC N M v" N r M r N N N CO C en 0 V1 w O r O O O M O r O r N O O CD O O p O p O O O O O O ? ec O p O 0 p O p 0 0 0 0 0 0 O. O 00 Y U Q v -i Y h Y U X oo o .^-i m N N M O IY W a CO U N C co Ts - • co M U CO U U U U 00 0 U 00 m U U OD to m Q) - - Y ^O i ,--1 O Q d N ED Q w in 4 0 < a) Q M st oO 0 U U N N O M y m N 2 N O N O N r M M r N N a r N cc N f0 •5 c = w s z _9 o < J a - J j N N J Q o o v 0 CO w 0. (o = C1) v .. 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' --f IV I •••4 (.•A 1 VJ (JJ 0 F7*/ --I ,- . . >< E73X7373737.173737J737J7.1 71 M Cn Cn Cn Cn a) Cn Cn Cn a) Cn Cn (n 0 .-,. r, k.a •, 7- * X▪ 0 Xl m ,. XI '1 CD I— ME._,-.'• O _ ;10 CO 11 .—. —1 J 4 0 ..Z 0 '', . • (r) ."...,. ....,, , > 5 I:1 x- : Fri" ha -1. -a. PJ IV IV IV NJ PV " ,- al - •-•1 cri cr, 41. .111. al . 7_, ' ' , .-I ,-,(1' W n -• 7,• 0, - ..:.4 f i LLLLLLLZ_ LkEL) — - i 7-- o p; • (13 9 F F CI A R . . . . . . . . . . . ,, , r'' ,--. 2) cro N.) -I. . . . . -A. -1. -.. , • . . . , , _,. m ,,.„ _,,. _. ... " 1,,,3 h, ''1' t:. P--•• Pj Z , • ,_. (•D CD VI C , " r-, " n.) r.) 4.) 4.) iv IV r..) ^.) • ";;:4 00, c A) r-■ c:: LC1 M 11■'''''k - - a. ,„1 k " .. . ',.1 CO 0 eti : ....i ■1 ...1 ■6 -. . 0• -' Z • •• ..", ' " l-0 Cr CD —I '..•''. r 0 t4 (1) VI • r--, , — 'l' 0 - 00 0 v, ...< ,.... -. . ,. , 0 c., ,.., CD !J r 0 .... ;.-,.. 0 ; .■■ .1. r•-■• 4=. % (/) '- ..., •-•r pd 0 • -- , 0 ,.. , ■••••1 l I ..., , 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 OCICIDOOCJ0000000 co , 0.1 „......-kM 0 S ', STATE OF ALASKA RECEIVED ALA_.A OIL AND GAS CONSERVATION COMA,,. ,ION REPORT OF SUNDRY WELL OPERATIONS AUG 0 8 2012 1.Operations Abandon U Repair Well U Plug Perforations U Perforate U Other I �C)GCC Performed: Alter Casing 11 Pull Tubing❑ Stimulate-Frac El Waiver 11 Time Extension,LfJi , Change Approved Program ❑ Operat.Shutdown❑ Stimulate-Other ❑ Re-enter Suspended Well❑ 2.Operator 4.Well Class Before Work: 5.Permit to Drill Number: Name: BP Exploration(Alaska),Inc Development al Exploratory ❑ 210-092-0 3.Address: P.O.Box 196612 Stratigraphic❑ Service ❑ 6.API Number: Anchorage,AK 99519-6612 50-029-21615-03-00 7.Property Designation(Lease Number): S 8.Well Name and Number: ADL0028322 Ag�� 0 8 19 PBU 18-12C 9.Logs(List logs and submit electronic and printed data per 20AAC25. 71): 10.Field/Pool(s): To Be Submitted PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: Total Depth measured 17080 feet Plugs measured None feet true vertical 8597.24 feet Junk measured 16973 feet Effective Depth measured 16983 feet Packer measured See Attachment feet true vertical 8607.91 feet true vertical See Attachment feet Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20"Conductor 23-103 23-103 0 0 Surface 2721 13-3/8"72#L-80 109-2830 109-2698.99 4930 2670 Intermediate None None None None None None Production 3243 9-5/8"47#L-80 21 -3264 21 -3066.14 6870 4760 Liner 3690 4-1/2"12.6#L-80 13381 -17071 8075.28-8598.28 8430 7500 Perforation depth Measured depth See Attachment feet True Vertical depth See Attachment feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6# 13CR85 20-13386 20-8987.49 Packers and SSSV(type,measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 662 2966 43 0 383 Subsequent to operation: 0 0 0 0 0 14.Attachments: 15.Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development al o Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16.Well Status after work: Oil it 151 Gas ❑ WDSPL❑ GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP❑ SPLUG❑ 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: N/A Contact Nita Summerhays Prepared by Nita Summerhays 564-4035 Printed Name Nita Summe lay Title Petrotechnical Data Technician Signatur. 1( .✓ ' Phone 564-4035 Date 8/7/2012 i pppp *� AUG C� ypy Form 10-404 Revised 10/2 8�M AG U 0 7d 1L �'`� ' �� "/'Z' Submit Original Only r�t�`� l zb. Daily Report of Well Operations ADL0028322 • = 10 :■1 S •ssis • WI using cean ou . 'ump •• •. s 0 •eg .s ru col 4/21/2012 (continued on 4/22/12) CTU#9 1.75" CT. Job Scope: HOT/Adperf. RU. MU and RIH w/2" Baker clean out BHA w12.5"JSN. Tagged at 1400' ctmd. Set down 2klbs, WHP dropped down from 1000psi to 120psi. Observed a weep at the block valve on kill port. Bled off WHP, POOH. At surface. Changed leaking valve out. Stabbed in. LHPT stack to 300/4000psi. RIH w/the same cleanout BHA w/2.5"JSN. Tagged at 1463' ctmd. Started jetting 140degF diesel at 1 bpm taking returns to the flowline. 4/21/2012 <<<Job continued on 4/22/2012>>> (continued from 4/21/12)Assist CTU on cleanout pump 292 bbls 140 deg dsl while coil runs in tbg 4/22/2012 FWHP=250/1250/0 L I U#9 1.75" Long string coil-Job Scope = Hot the tubing/Add Pert Continue RIH jetting 140degF diesel at 1 bpm to 16011' ctmd. POOH chasing out w/hot diesel at 1.4bpm. Pumped 479bb1s of diesel. MU and RIH w/2.375"GR/CCL logging string w/3.7" Barbell nozzle for tie-in log. Tagged at 14341' ctmd, set down 5klbs. PUH and ran back. 31 klbs up weight. Tagged at the same depth. Ran back w/pumps on past obstruction to 13370' ctmd. PUH and ran back through obstruction dry w/no weight drop. RIH to 16184 working through obstructions. WC at 14800'ctmd, 40klbs PUW. Decided to POOH due to high up weights w/pumps on. Pulling heavy @14276'ctmd. 39klbs up weight. Ran back to 14290ctmd and PUH. Past obstruction. POOH to surface. Logging tools on toolstring. Left 2 3/8" logging carrier, 2"OD XO, 2.15"OD XO, 3.7" Barbell nozzle in the hole. Fish length 10.49' 4/22/2012 <<<Job continued on 4/23/2012>>> Cl U#9 1.75" Long string coil-Job Scope= HOT the tubing/Add Perf 4/23/2012 RDMO for planned maintenance. T/I/O= 258/1191/19 Temp- SI (Freeze Protect Tubing l hru IA) Pumped 10 bbls neat meth followed_ bbls of 110* F crude down the IA thru the SO at 9120'taking returns up the tubing and flowline to freeze protect the tubing. Capped IA w/5 bbls of meth. Freeze Protect Flowline with 5 bbls neat and 49 bbls crude pressure flowline to 1500 psi rig down (swab closed wing closed ssv 4/24/2012 closed master open annulus valves open to gauges) FWHP=0/245/34 CTU#9 1.75"Job scope: Fish logging carrier w/3.7"nozzle. Clean out w/Diesel+Xylene,AdPerf. Completed planned maintenance. Unit moved out of the yard to 18-12C.Arrived on location at 22:30. 4/25/2012 <<<Job continued on 4/26/2012>>> CTU#9 1.75" RU. Job Scope: Fish logging carrier w/3.7" nozzle, Clean out w/Diesel+Xylene, AdPerf. Performed weekly BOP test- passed. MU fishing toolstring w/acc,jars, 4"GS spear, 3.7" Bait Sub + 3.5"Weatherford Overshot. OAL=25.42'. RIH. Tagged at 14294'. Set down 4klbs. PUH. 5klbs overpull. Jarred 21 times w/ 10klbs overpull. Pumped 100 bbls of safe lube down the backside to get more weight transfer. Observed 200psi bobble in pressure and weight while pumping. Able to RIH. PUH to 14270ctmd while pumping. RIH to 14354ctmd. Tagged multiple times. No overpull while PUH. Decided to POOH. Retrieved 7' of 2 3/8"logging carrier. Carrier body colllapsed and sheared off at bottom. Left 2 3/8"STL x 1.5" MT XO, 2"OD 1.5" MT x 1.5" Dowell, 2.15" 1.5"x 1.81" Dowell XO, 3.7" Barbell nozzle left in the hole. Fish length —1.86'. Decided to change out grapples in overshot and RIH to retrieve the rest of the fish. MU new fishing toolstring. 4/26/2012 <<<Job continued on 4/27/2012>>> C I U#9 1.75" RU. Job Scope: Fish logging carrier w/3.7" nozzle, Clean out w/Diesel+Xylene, AdPerf. RIH w/modified fishing toolstring. Tagged at 14356 several times'. Set down 7klbs. PUH. 5klbs overpull but weights incostistent after each tag. Spot 40bbls of diesel+xylene pill down across tag depth, squeeze it w/900 WHP, let it soak for 1 hr to clean out possible asphaltene. RIH. Tagged at 14361 ctmd. Set down 4klbs. PUH, pulling heavy. 30klbs up weight. POOH to check for fish. Pumped 32 bbls of meth down the backside to give a freeze protect cap. No fish at surface. Metal shavings and marks on the overshot. Redress overshot with smaller grapples and RIH. Tagged multiple tiimes at 14364ctmd. Set down 1-8klbs. 1-3 klbs overpull observed. PUH to 14000ctmd. Pulling heavy at coil limit. 40klbs up weight. RIH and tagged at the same depth. Set down 8klbs. POOH to check for fish. Pulling heavy at 39klbs up weight but able to POOH at slow speeds. Weights, speed contniue improving while POOH. 4/27/2012 <<<Job continued on 4/28/2012>>> CTU#9 1.75" RU. Job Scope: Fish logging carrier w/3.7" nozzle, Clean out w/Diesel+Xylene, AdPerf. Continue to POOH to check for fish. No fish at surface. Decided to push fish to bottom w/3.25"JSN jetting w/hot diesel. Start jetting with 140degF diesel+776 Lube from 11842ctmd at 1.5bpm. RIH jetting diesel to 14500. PUH to chase up. Pulling heavy at 36klbs. Increased rate to 1.7bpm and contniue PUH to 9588ctmd. Still pulling heavy. RIW look good. RIH circulating. Pumped 100bbIs of safelube to reduce friction Swapped to xtra slick KCL and continue to RIH to 15550ctmd. PUH to 14000 pumping diesel+xylene down coil. Circulate out 2 x 10bbls gel sweeps @14264' and @16170ctmd. Start cleaning out w/gel from 16325ctmd making 50ft bites chasing out gel 200-300' up the hole. Up weights normal at 33klbs. Getting 1:1 returns. Cleaned out to 16600ctmd and chase out to safety at 14000ctmd. Pulling out heavy @38klbs. 4/28/2012 «<Job continued on 4/29/2012>>> WHP 523/0/0/ Temp S/I (Assist CTU ) Rig to CTU and pump 312 bbls at 145"diesel/slickem to 4/28/2012 coil. Pump 130 bbls straight diesel @ 145"to coil. Standby for coil. RDMO. Operator notified. CTU#9 1.75" RU. Job Scope: Fish logging carrier w/3.7" nozzle, Clean out w/Diesel+Xylene, AdPerf. RIH to 16600'for the next bite w/gel. Cleaned out to 16780'. Coil pressure dropped down at 16600' from 2000psi to 1000psi. Suspected pinhole in coil. POOH to evaluate the problem. Circ pressure climbing up every time when PUH but still too low. Decided to chase out remaining gel sweeps to 14000ctmd safety. Stopped POOH at 14000ctmd and kept cicrulating w/60/40 until the last gel sweep at surface. Stopped pumping. Pressured up backside to 700psi to check for Tbg x CT communication. Coil pressure climpbs up simultaneously to 700psi. Indication of hole in coil above DCV. Performed safety meeting and discussed contingecy plans for POOH w/hole in coil. POOH w/pumps off. Coil partially parted. Stop moving the pipe. Notified personnel on site. Called Pad Operator. Pad Closed. Closed slips, pipe rams to secure well. Discussed with TL plan ahead to secure pipe. Clamped pipe together, POOH. Freeze protect tubing with 38 bbls of methanol. Freeze protect flowline with 58 bbls of diesel and trap 1000 psi on the flowline. RDMO. 4/29/2012 *""Job Incomplete"""" CTU#9 1.75"Coil I ubing Spool pipe off to fix part and blow reel down 4/30/2012 <<<Continued on 5/1/2012>>> CTU#9 1.75" Coil Tubing 5/1/2012 Spool Pipe off CTS#9 1.75"Coil Tubing 5/2/2012 Spool off pipe CTU#9 w/1.75"CT: Job Scope: Push Fish to Bottom/Depth Log/Adperf: Weld on pipe 6/23/2012 extension for job. """Job Not Complete*** CTU#9 w/1.75"CT: Job Scope: Push Fish to Bottom/Depth Log/Adperf: MIRU CT Unit. MU 6/26/2012 and RIH w/GR/CCL logging BHA for depth control. ***Job Continued on 27 June 12*** Cl U#9 w/ 1.75"CT: Job Scope: Push Fish to Bottom/Depth Log/Adperf: Job Continued on from 26 June 12. Continue RIH with logging tools. Tag PBTD at 16973'ctmd. POOH logging to 13200' ctmd. Download and confirm good data. MU and RIH with gun run#1. Perforate from 16914'to 16944'corr with 2 7/8"HSD, PJ02906 HMX charges, loaded 6 spf and 60 deg phasing. 6/27/2012 ***Job Continued on 28 June 12*** CTU#9 w/ 1.75"CT: Job Scope: Push Fish to Bottom/Depth Log/Adperf: <<< Continue WSR from 6/27/12 »:> Perforate from 16864'to 16894'corr with 2 7/8" HSD, PJ02906 HMX charges, loaded 6 spf and 60 deg phasing. Freeze protect well w/38 bbls of 60/40 Methanol ***Job 6/28/2012 Complete""` FLUIDS PUMPED BBLS 1283 DIESEL 52 METH 298 60/40 METH 20 KCL+776 LUBE 530 CRUDE 371 1%KCL WITH SL 40 DIESEL+XYLENE 312 DIESEL+776 LUBE 6 50/50 METH 2912 TOTAL Perforation Attachment ADL0028322 Perf Opera Meas Meas SW Operation tion Depth Depth ND Depth ND Depth Name Date Code Top Base Top Base 18-12C 9/23/11 PER 14550 14700 8650.61 8657.57 18-12C 9/23/11 PER 14850 16000 8598.87 8576.5 18-12C 1/10/12 APF 16350 16380 8571.86 8570.63 18-120 1/9/12 APF 16448 16478 8568.63 8567.96 18-12C 1/9/12 APF 16560 16590 8566.33 8565.66 18-12C 6/28/12 APF 16870 16900 8557.44 8556.44 18-12C 6/27/12 APF 16920 16950 8555.56 8553.92 AB ABANDONED MIR REMOVED APF ADD PERF MIS MECHANICAL ISOLATED BPP PULLED MLK MECHANICAL LEAK BRIDGE OPEN BPS PLUG SET OH HOLE FCO FILL CLEAN OUT STC STRADDLE PACK,CLOSED FIL FILL STO STRADDLE PACK, OPEN SQF SQUEEZE FAILED SPS SAND PLUG SET SQZ SQUEEZE SL SLOTTED LINER PER PERF SPR SAND PLUG REMOVED RPF REPERF II, Packers and SSV's Attachment ADL0028322 SW Name Type MD ND Depscription 18-12C PACKER 3103 2874.37 7" Baker ZXP PKR/HGR 18-12C PACKER 13263 7918.39 4-1/2" HES TNT Perm Packer 18-12C PACKER 13381 8018.99 4-1/2" BAKER LINER TOP HGR/PN I TREI=' 4-1/16"CNV ACT OR= BAKER C 1 8-1 2C ORIGINAL I , A&8 WELBORES NOT SHOWN ACTUATOR BELOW KB. ELEV= 47' 9-518"WHIPSTOCK 0 3264"'"" BF.ELEV= 23.8' J t f KOP= 1200' 13-3/8"CSG, —I 109' Max Angle= 97°Q 17080' 68#,K-56 2050' H4-1/7'HES X NIP,ID=3.813 Datum MD= NIA ID=12.415" I , Datum TVD= 8800'SS 20-"CONDUCTOR,91.5#,1+40, ID=19.124" H 110' 13-3/8"CSG,72#,L-80,ID=12.347" —1 2830' I-4 J---1 3103' J-19-5/8"X 7'BKR ZXPN LTP"w/10'TIEBACK, 9-5/8"CSG,47#,L-80 SMLS R3 BUTT,ID=8.681" H —3264 r &BKR FLEX LOCK HGR, ID=6.180" 9-5/8"WHIPSTOCK(08/19/11) --I 3264' �---- 9-5/8"EZSV(08/18/11) —I 3285' I - MLLOUT WINDOW(18-12C) 3264'-3281" GAS LIFT MANDRELS ST MD 1VD DEV TYPE VLV LATCH PORT DATE 3 4185 3710 59 KBG2 DOME BK 16 10/12/11 2 9120 5796 66 KBG2 SO BK 20 10/12/11 Minimum ID = 3.726" @ 13376' 1 11996 7012 62 KBG2 DMY BK 0 09/25/11 4-1/2" HES XN NIPPLE • 13234' IH4-1/2"HES X NIP,ID=3.813" I >S ( 13263' H 7"X 4-1/7'HES TNT PKR,ID=3.856" 13298' H4-1/7'HES X NIP,ID=3.813" I 13375' H4-1/z'HES XN NIP,ID=3.725" I 4-12"TBG, 12.6#,13CR-85 VAM TOP, --I 13386' ,0152 bpf,ID=3.958" 13381' H 7"X 4-12"BKR I-RD•E ZXPN LTP,ID=4.250" 7'CSG,26#, L-80 VAM TOP HC, 13539' I 13387' —14-1/2"WLEG,ID=4.100" 0383 bpf,ID=6.275' \1111 H ELMD TT NOT LOGGED LvIMARY 13398 PERFORATION S ' H7"X 4-1/7'BKR FLEX LOCK HGR,ID=4.190" I REF LOG: MWLYNGP GR/ROP ON 0628/05 TIE-IN LOG: GEOLOGY FDC LOG ANGLE AT TOP PEW: 88°@ 14550' Note: Refer to Ftoduct on DB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE 2-7/8" 6 14550-14700 0 09/23/11 2-7/8" 6 14850-16000 0 09/23/11 I 3-3/8" 6 16350-16380 0 01/09/12 3-3/8" 6 16448-16478 0 01/09/12 1 3- 8L 6 76560-16590 - . 07----01/09/12, �;6 2-7/8" 6 16870-16900 0 06/28/12 P e4 2-7/8" 6 16920-16950 0 06/27/12 - ,"- /\_____ /' 16973' CTM I-FISH:3.7'CT NOZZLE /CROSS OVERS ON TOP,OAL=1.86'(06/27/12) I PBTD H 16973' CTM ►*i STATE OF ALASKA ALASK -AND GAS CONSERVATION COMMIS: REPORT OF SUNDRY WELL OPERATIONS 1.Operations Abandon ❑ Repair Well ❑ Plug Perforations ❑ Stimulate Other ❑ Performed: Alter Casing ❑ Pull Tubing❑ Perforate New Pool ❑ Waiver❑ Time Extension ❑ Change Approved Program ❑ Operat.Shutdown❑ Perforate Q Re-enter Suspended Well ❑ 2.Operator BP Exploration(Alaska),Inc. 4.Well Class Before Work: 5.Permit to Drill Number: Name: Development 0 Exploratory ❑ v, 210-092 3.Address: P.O.Box 196612 Stratigraphic El Service ❑ 6.API Number: Anchorage,AK 99519-6612 la 50-029-21615-03-00 8.Property Designation(Lease Number): 9.Well Name and Number: ,, ADL-028321 &ADL-028322 PBU 18-12C 10.Field/Pool(s): _ PRUDHOE BAY FIELD/PRUDHOE OIL POOL 11.Present Well Condition Summary: Total Depth measured 17080 feet Plugs(measured) None feet true vertical 8597.24 feet Junk(measured) None feet Effective Depth measured 16983 feet Packer(measured) 3103 13263 13381 feet true vertical 8607.91 feet (true vertical) 3108 13268 13386 feet Casing Length Size MD TVD Burst Collapse Structural Conductor 20"CONDUCTOR 23-103 23-103 Surface 13-3/8"72#L-80 22-2830 22-2699 4930 2670 Production 9-5/8"47#L-80 21 -3264 21 -3066 6870 4760 Liner 7"26#L-80 3103 - 13539 2931 - 8209 7240 5410 Liner 4-1/2"12.6#L-80 13398 - 17071 8090 - 8598 8430 7500 Perforation depth: Measured depth: -SEE ATTACHED True Vertical depth: Tubing:(size,grade,measured and true vertical depth) 4-1/2"12.6# 13CR-85 20-13386 20-8080 Packers and SSSV(type,measured and true vertical depth) 7"BKR ZXPN LTP 3103 2931 4-1/2"HES TNT PKR 13263 7975 4-1/2"BKR HRD-E ZX N LTP RECEIVE'S' 8075 12.Stimulation or cement squeeze summary: JAN 3 0 2012 Intervals treated(measured): Treatment descriptions including volumes used and final pressure: Alaska Oil &Gas Cons. Commission Anchorage 13. Representative Dairy AveiayC Production or Iiije..tion Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing pressure Prior to well operation: 530 2580 5 313 Subsequent to operation: 409 3178 6 290 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 . 0 Gas ❑ WDSPL U GSTOR ❑ WINJ ❑ WAG❑ GINJ ❑ SUSP❑ SPLUG ❑ 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: NA Contact Nita Summerhays Printed Name Nita Summerhays Title Data Manager Signature Phone 564-4035 Date 1/26/2012 - 1Nr) Form 10-404 Revised R$mS JAN 31 2012 (--3( (i Submit Original Only /",j./L°r" ( 3/7/:Z I.. CO MD CO NJ I 0) to t. N 0 0D RtiNIYl• a- CO I mCDCDCDCDCD C4 1 ▪ ao 00 03 OD 00 C. CI) D 7 1 ~ rtDNN, _ My a- CA CD r C O to N 00 1- in to N N N t CO t0 CO CO t0 d 100 00 III 00 00 100 I I Cl O , M Z, O W W Ja ~ V O th C6 C6 06 C6 0:6 O �I1.'OIIt In el 11 W'',WIW J o U' met t0 t0 t0 t01 Z aa, WIQ1 a al 5I�,�,� � � J C9'( U i w w C. J J W W 1J J aII, wLc aaLJcipc e z '� 0O JzID n o I 0 wwJ'aaCYCY1.- I-� way ° 00O ° ai�icnmmcncncncn+ Z 1 - � Di co4in N a V t a- a- r r r ' a F- Q y- N a CO W a aJLL E GO O O'' a2 aCeCAU) U) COO'COvivi O IG > 0 a wN L 4L C.', 1 I I 0 0 0 I 1 1 FA w w Ce I U- LL. U, O aaQQQ _J 1.- J JQ, -- mow 00 e- r- NNN aNH M J 0) V. � .l l l. 1 CD 0O JJ _J' m t74.3 G,N NI� —... UJ I J J Z aaalw • c> 0 T Z1U aaa C) V V J O G W W'WJ a alai= `o z0. 000 _ _ = Z t o a G Q 0 J J O V O W C. 03ammJJ,WIW Wa O 1 laamma �'EI2''20 E —� } d co VVU'UIU 1 1 Z N N N N N y- r a U. o cn O ci cn m'an. a J J2 U) -00010- alarmmUT. 2'I2,2O 18-12C DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY ACTIVITYDATE I SUMMARY 1/7/2012 CTU#9 1.75" CT Job Scope: AdPerf MIRU. «<In Progress>>> 1/8/2012 CTU#9 1.75" CT Job Scope: AdPerf «<Continued from 1/7/12>>> RIH w/2.20" SLB GR/CCL in carrier w/3.70" JSN for depth control/jewelry log. Log GR/CCL from 16,550'CTM to 13,100'CTM at 60 fpm. Flag pipe at 16320'CTM. POOH. RIH w/ 30' SLB 3.38" PJ3406- HMX 6 spf pert gun. Fight ice/hydrate obstruction from 2130'CTM to 8000'CTM. Continue RIH to flag. <<<Job in Progress>>> 1/9/2012 CTU#9 1.75" CT Job Scope: AdPerf <<<Continued from 1/8/12>>> Continue RIH. Correct CTM to ELM at flag. Stop at flag at 16,373.7'CTM, correct depth to 16,376.91'ELM. Perforate 16,560-16,590'ELM w/SLB 3.38" PJ3406 HMX 6 SPF. PU to flag at 16,377'ELM and repaint. POOH. Confirm guns fired. Guns covered with Paraffin. RIH for gun run #2. Correct to flag. Adperfs at 16,448- 16,478'ELM w/SLB 3.38" PJ3406 HMX 6 SPF. POOH. Confirm guns fired. Guns covered with Paraffin. RIH for gun run#3. «<In Progress>>> 1/10/2012 T/I/0=310/1400/0 Assist CTU#9 (AdPerfs) Pumped 323 bbls 150*F diesel down coil to clean perfs. FWHP's=600/1575/0. CTU on well at departure. 1/10/2012 CTU#9 1.75" CT Job Scope: AdPerf «<Continued from 1/9/12>>> Continue RIH w/gun run #3. Correct to flag. Adperfs at 16,350-16,380'ELM w/ SLB 3.38" PJ3406 HMX 6 SPF. POOH. RIH w/2.25" Jet Swirl Nozzle. Jet hot diesel from 16475'CTMD to surface taking returns to production. Well left w/diesel freeze protect. Flow line freeze protected w/56 bbls of 60/40 methanol. «<In Progress>>> 1/11/2012 CTU#9 1.75" CT Job Scope: AdPerf «<Continued from 1/10/12>>> Perform weekly BOP test(Pass). RDMO. <<<Job Complete>>> FLUIDS PUMPED BBLS 451 60/40 METH 290 1% SLICK KCI W/ SAFE LUBE 323 DIESEL 1064 TOTAL • TREE= 4-1/16"CM/ WELLHEAD= FMC SAFETY cS: WELL ANGLE>70°@ 14113'""" 120 ACTUATOR= BAKER C 18- ORIGINAL,A&B WELBORES NOT SHOWN BELOW KB. ELEV- 47' 9-518"W H PSTOC K RP 3264"'""" BF. ELEV= 23.8' J t 1,1 KOP — 1200' 13-3/8"CSG, —I 109' Max Angle= 97°@ 17080' 68#,K-55, 2050' 1-14-1/2"HES X NIP,10=3.813" Datum MD= N/A ID=12.415" Datum TVD= 8800'SS 20-"CONDUCTOR 91.5#,H-40,ID=19.124" H 110' 13-3/8"CSG,72#,L-80,ID=12.347" —I 2830' 3103' —19-5/8"X 7"BKR ZXPN LTP"w/10'TIEBACK, 9-5/8"CSG,47#,L-80 SMLS R3 BUTT,ID=8.681" —I —3264 &BKR FLEX LOCK I-GR, ID=6.180" 9-5/8"WHIPSTOCK(08/19/11) H 3264' ---_ 9-5/8"EZSV(08/18/11) —I 3285' i MILLOUT WINDOW(18-120) 3264'-3281" GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 3 4185 3700 59 KBG2 DOME BK 16 10/12/11 2 9120 5796 65 KBG2 SO BK 20 10/12/11 Minimum ID = 3.726" @ 13376' 1 11996 7012 62 KBG2 DMY BK 0 0925/11 4-1/2" HES XN NIPPLE 13234' H4-1/2'/2'HES X NIP,ID=3.813" 13263' I- T X 4-12"HES TNT PKR, ID=3.856" I � 13298' H4-1/2"HES X NIP, ID=3.813" I 13375' I-14-12"HES XN NIP,ID=3.725" 4-1/2"TBG, 12.6#,13CR-85 VAM TOP, H 13386' .0152bpf, ID=3.958" 13381' 1-17"X 4-1/2'BKR hRD-E ZXPN LTP,ID=4.250" 7"CSG,26#, L-80 VAM TOP HC, —I 13539' ( I 13387' —14-1/2"WLEG,ID=4.100" .0383 bpf, ID=6.276" —I ELMD TT NOT LOGGED ■ 13398' I-17"X 4-12"BKR FLEX LOCK HGR,ID=4.190" I PERFORATION SUMMARY REF LOG: MWGYNGP GR/ROP ON 0628/05 TIE-IN LOG: GEOLOGY PDC LOG ANGLE AT TOP PERF: 88°@ 14550' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-7/8" 6 14550-14700 0 09/23/11 l 2-7/8" 6 14850-16000 0 09/23/11 l 3-3/8" 6 16350-16380 0 01/09/12 3-3/8" 6 16448-16478 0 01/09/12 3-3/8" 6 16560-16590 0 01/09/12 PBTD l 16983' .∎•■•■•■•■ 4-1/2" LNR, 12.6#, L-80 TCII,.0152 bpf,ID=3.958" H 17071' • DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/23186 ORIGINAL COMPLETION 10/14/11 DGLY PJC FINAL DRLG CORRECTIONS WELL 18-12C 11108/97 CTD SIDETRACK(18-12A) 01/13/12 JJUJMD ADPERFS 90'(01/09/12) PERNIT No:'2100920 07/04/05 NORDIC1 CT SIDETRACK(18-12B) API No' 50-029-21615-03 09/27/11 D-25 CT SIDETRACK(18-12C) SEC 19,T11 N, R15E, 1166'FNL&403'FWL 10/08/11 PJC DRLG DRAFT CORRECTIONS 10/14/11 GJB/PJC GLV C/O(10/12/11) BP Exploration(Alaska) 0 -000 TS ayN lg m o 1 D z z a a 0o 0 ° yr 3 m m o m m ? m D 1 A g y N p ` bbb �AOO�9Ta'W GN� NW mN C L. 7c y R. 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Commission To: State of Alaska November 4, 2011 Alaska Oil and Gas Conservation Commission Attn.: Howard Okland RECEIVED 333 West 7th Avenue,Suite 100 NOV 0 9 2011 Anchorage,Alaska 99501-3539 Alaska Oil&Gas Cons. Commission RE: LWD Formation Evaluation Data: 18-12C AK-MW-000174214 18-12C 50-029-21615-03 2"x 5" MD Triple Combo Logs: 1 Color Log 2"x 5"TVD Triple Combo Logs: 1 Color Log Digital Log Images&LWDG-formatted LIS Data w/verification listing; 1 CD Rom PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY OF THIS TRANSMITTAL LETTER TO THE BP PETROTECHNICAL DATA CENTER AND ONE COPY TO SPERRY DRILLING: Sperry Drilling BP Exploration (Alaska), Inc. Attn: Buster Bryant Petrotechnical Data Center 6900 Arctic Blvd. LR2-1 Anchorage,Alaska 99518 P.O. Box 196612 Office: 907-273-3539 Anchorage,AK 99516-6612 Fax: 907-273-3535 Buster.Bryant @halliburton.com Date: V/17.•/V Signed: Wilk L11") nail( McMains, Stephen E (DOA) From: Hubble, Terrie L [Terrie.Hubble @bp.com] Sent: Monday, November 07, 2011 2:19 PM To: McMains, Stephen E (DOA) Subject: PBU 18-12C/ PTD#210-092 pT-D Hi Steve, Please reference the following well: _ 0q ) Well Name: PBU 18-12C Permit#: 210-092 API #: 50-029-21615-03-00 This well began Production on November 4, 2011 Method of Operations on this date: Flowing 1 0 .(t'a— 0 1 N V per % E Iv O 4. 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Well Status: ® Oil ❑Gas ❑SPLUG ❑Other ❑Abandoned ❑Suspended A)a�cI( QI iaa8s CS•COiiui1IUUiun 20AAC 25.105 20AAC 25.110 Si Devetplit4 Exploratory ❑ GINJ ❑WINJ ❑WAG ❑WDSPL ❑Other No.of Completions One ❑ Servi Stratigraphic 2. Operator Name: 5.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number: BP Exploration(Alaska) Inc. 9/27/2011 210-092 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 8/21/2011 50-029-21615-03-00 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number: Surface: 9/19/2011 PBU 18-12C 4,113'FSL,4,552'FEL, SEC. 19,T11N, R15E, UM 8. KB(ft above MSL): 56.29' 15.Field/Pool(s) Top of Productive Horizon: 2,391'FNL, 1,216'FEL, SEC. 17,T11N, R15E, UM GL(ft above MSL): 17.4' Prudhoe Bay Field/Prudhoe Bay Total Depth: 9.Plug Back Depth(MD+TVD): Oil Pool 1,851'FNL,3,504'FEL, SEC. 16,T11N, R15E, UM 16,983' 8,608' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation: Surface: x- 692,168 y- 5,960,712 Zone- ASP4 17,080' 8,597' ADL 028321 &028322 TPI: x- 700,660 y- 5,964,991 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 703,635 y- 5,965,611 Zone- ASP4 None 18.Directional Survey: ® Yes ❑No 19.Water depth,if offshore: 20. Thickness of Permafrost(TVD): ,„(Submit electronic and printed information per 20 AAC 25.050) N/A ft MSL 1,900'(Approx.) 271.Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 22. Re-Drill/Lateral Top Window MD/TVD: DIR/GR/RES/PSD, DIR/GR/RES/PWD/NEU/DEN, MDT 3,264' 3,066' 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH ND HOLE AMOUNT CASING WT.PER FT. GRADE TOP BOTTOM To BOTTOM SIZE CEMENTING RECORD PULLED 20" 91.5# H-40 Surface 110' Surface 110' 30" 1610#Poleset _ __ 13-3/8" 68#/72# K-55/L-80 Surface 2.830' Surface 2.698' _ 17-1/2" 2500 sx Coldset III.400 sx CS II 9-5/8" 47# L-80 Surface. 3.264' Surface 3.066' 12-1/4" 500 sx Class'G'.300 sx CS I __.,,7",_._, . 26# L-80 3.103' 13.539' 2.931' 8.209' 8-1/2" 232 sx Class'G' 4-1/2" 12.6# L-80 13.381' 17.071' 8.075' 8.598' 6-1/8" 485 sx Class'G' . 24. Open to production or injection? ® Yes ❑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 4-1/2", 12.6#, 13Cr85 13,387' 13,263'/7,975' MD TVD MD TVD 14,550'-14,700' 8,651'-8,658' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. 14,850'-16,000' 8,655'-8,633' DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED t 2,000' Freeze Protected w/146 Bbls of Diesel 7' at i 4 �4 a 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: 10/21/2011 8 Test Period 4 512 377 4 128 736 ` Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 230 950 24-Hour Rate ♦ 171 126 1 Not Available 28. CORE DATA Conventional Core(s)Acquired? ❑Yes ®No Sidewall Core(s)Acquired? ❑Yes ®No If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and presence of oil,gas or water (submit separate sheets with this form,if needed). Submit detailed descriptions,core chips,photographs and laboratory analytical results per 20 AAC 250.071. None RBDMS OCT 26 201 Form 10-407 Revised 12/2009 CONTINUED ON REVERSE -�Q, i Z_ lc—if I _ $ut�it Original Only 29. GEOLOGIC MARKERS(List all formations and markers encountered): 30. FORMATIO,. 1 ESTS NAME MD ND Well Tested? ®Yes ❑No Permafrost Top If yes,list intervals and formations tested,briefly summarizing test results. Attach separate sheets to this form,if needed,and submit Permafrost Base detailed test information per 20 AAC 25.071. Ugnu 6,784' 4,822' MDT was ran, log supplied for detail. West Sak 2 10,047' 6,186' West Sak 1 10,559' 6,401' Colville Mudstone 3 11,002' 6,586' Colville Mudstone 2 12,142' 7,089' Colville Mudstone 1 12,782' 7,555' Top HRZ 13,297' 8,004' Put River 13,545' 8,214' Shublik 13,551' 8,219' Sadlerochit 13,586' 8,249' Top CGL/Zone 3 13,699' 8,342' Base CGL/Zone 2C 13,788' 8,412' 23SB/Zone 2B 13,864' 8,470' 22TS 13,900' 8,496' 21TS/Zone 2A 13,952' 8,531' Zone 1B 14,006' 8,564' TDF/Zone 1A 14,260' 8,642' Base Sadlerochit 14,700' 8,658' Base Sadlerochit 14,850' 8,655' Base Sadlerochit 16,005' 8,633' TDF/Zone 1A 16,900' 8,613' Formation at Total Depth(Name): Zone 1B(from base) 16,900' 8,613' 31.List of Attachments: Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys 32.I hereby certify that the foregoin is true and correct to the best of my knowledge. / Signed: Terrie Hubble emit) 6_40 Title: Drilling Technologist Date: I° Zi°(1( PBU 18-12C 210-092 Prepared By Name/Number: Terrie Hubble, 564-4628 Well Number Permit No./Approval No. Drilling Engineer: Mel Rixse, 564-5620 INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item 1 a: Classification of Service Wells: Gas Injection,Water Injection,Water-Alternating-Gas Injection,Salt Water Disposal,Water Supply for Injection, Observation,or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI(Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits(ex: 50-029-20123-00-00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and ND for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval(multiple completion),so state in item 1,and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing,Gas Lift,Rod Pump,Hydraulic Pump,Submersible,Water Injection,Gas Injection,Shut-In,or Other(explain). Item 28: Provide a listing of intervals cored and the corresponding formations,and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation,and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 12/2009 Submit Original Only TREE= 4-1/16"CM/ WELLHEAD= FMC 18-1 2 C SAFETY NOTES: WELL. LE>70°@ 14113'**ACTUATOR= BAKER C PJ C DRAFT ORIGINAL,A&B WELBORES NOT SHOWN BELOW KB.ELEV= 47' 9-5/8"WHIPSTOCK @ 3264"*** BF.ELEV= 23.8' j 1 J- KOP= 1200' 13-3/8"CSG, -1 109' I J �` Max Angle= 88°@ 17080'_ 68#,K-55, Datum MD= " ID=12.415" I 2050' 1-14-1/2"HES X NIP,ID=3.813" I Datum TV D= 8800'SS 20-"CONDUCTOR,91.5#,H-40,ID=19.124" -J 110' 13-3/8"CSG,72#,L-80,ID=12.347" 1 2830' I-A 3103' I-9-5/8"X 7"BKR ZXPN LTP"w/10'TIEBACK, 9-5/8"CSG,47#,L-80 SMLS R3 BUTT,ID=8.681" -3264 &BKR FLEX LOCK HGR,ID=6.180" 9-5/8"WHIPSTOCK(08/19/11) -1 3264' 1- 9-5/8"EZSV(08/18/11) H 3285' MILLOUT WINDOW(18-12C) 3264'-3281" 0\\%� GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 3 4185 3700 59 KBG2 DCK BEK 0 09/25/11 Minimum ID = 3.725" @ 13375' 2 9120 5796 65 KBG2 DMY BK 0 09/25/11 1 11996 7012 62 KBG2 DMY BK 0 09/25/11 4-1/2" HES XN NIPPLE ' 13234' 114-1/2"HES X NIP,ID=3.813" I I X 13263' I-17"X 4-1/2"HES TNT PKR,ID=3.856" I 13298' I--14-1/2"HES X NIP, ID=3.813" I 13375' 1-14-1/2"HES XN NIP, ID=3.725" I 4-1/2"TBG, 12.6#,13CR-85 VAM TOP, -j 13386' 13381' H7"X 4-1/2"BKR HRD-E ZXPN LTP,ID=4.250" .0152 bpf,ID=3.958" I 13387' 114-1/2"WLEG, ID=4.100" I ( 7"CSG,26#, L-80 VAM TOP HC, 1 13539' ELMD TT NOT LOGGED .0383 bpf,ID=6.276" 13398' 1-17"X 4-1/2"BKR FLEX LOCK HGR,ID=4.190"I l PERFORATION SUMMARY REF LOG: MWD/NGP GR/ROP ON 06/28/05 TIE-IN LOG: GEOLOGY PDC LOG ANGLE AT TOP PERF: 88°@ 14550' Note:Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-7/8" 6 14550-14700 0 09/23/11 2-7/8" 6 14850-16000 0 09/23/11 PBTD -1 16983' ■•••• ►∎i•i•i•i■ 4-1/2" LNR, 12.6#,L-80 TCII,.0152 bpf,ID=3.958" H 17071' Af.∎■�∎�4 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/23/86 ORIGINAL COMPLETION _ WELL: 18-12C 11/08/97 CTD SIDETRACK PERMIT No: 2100920 07/04/05 NORDICI CTD SIDETRACK API No: 50-029-21615-03 10/08/11 PJC DRLG DRAFT CORRECTIONS SEC 19,T11 N,R15E, 1166'FNL&403'FWL BP Exploration(Alaska) 18-12C MDT Pressure Summary Depth Before Formation After Temp. Mobility TVD Hydrostatic Pressure Hydrostatic 13606 3719 3285.68 3748 160.0 13630 3794 3287.00 3798 160.0 13657 3799 3289.00 3808 161 .0 8308.3 13672 3798 3293.00 3810 161 .0 884.20 8320.3 13686 3816 3299.00 3822 161 .8 252.40 8331 .6 13712 3822 3308.00 3832 162.0 186.10 8352.0 13733 3845 3317.00 3851 162.0 9.20 8366.6 13761 3909 3325.00 3895 161 .9 85.20 8390.0 13778 3845 3331 .00 3858 161 .5 219.30 8404.1 13796 3858 3338.00 3868 161 .4 61 .60 8418.4 13807 3846 3341 .00 3859 161 .8 287.00 8427.0 13829 3885 3350.00 3889 163.0 717.60 8444.0 13858 3868 3359.00 3877 164.0 442.40 8466.0 13969 3908 3303.00 3918 166.8 822.80 8542.3 13992 3943 3305.00 3943 168.2 30.80 8856 14066 3943 3309.00 3949 170.7 415.80 8594 14081 3939 3310.00 3944 171 .0 369.30 8600 14122 3946 3314.92 3953 171 .0 407.40 8614 14183 3938 3321 .22 3948 172.6 36.40 8630 14215 3973 3323.00 3973 173.0 331 .00 8636 14265 3967 3326.67 3673 174.0 30.30 8643 14300 4057 3327.05 4005 174.0 2.20 8645 BP AMERICA Leak-Off Test Summary Well Name: 18-12C Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) (ppg) 08/20/11 LOT 3,270.79 3,071.79 9.60 491.00 2,023.50 12.68 09/08/11 FIT 13,539.00 8,209.00 8.60 1,000.00 4,667.40 10.94 09/09/11 FIT 13,539.00 8,209.00 8.60 1,000.00 4,667.40 10.94 Page 1 of 1 North America ALASKA- BP Page 1 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date: 9/20/2011 X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 8/9/2011 12:00 - 20:00 8.00 MOB P PRE CONTINUE TO PREP FOR RIG MOVE TO DS-18 -SCOPE DOWN DERRICK AND PIN TOP DRIVE FINISH SECURING WELL A-25B BLOW DOWN MUD LINES -WELD ROLLER ON WIRE LINE DOOR -SECURE IRON DERRICKMAN -RAISE C-SECTION WIND WALL 20:00 - 22:00 2.00 MOB P PRE SKID MOTOR, PUMP,AND PIT COMPLEX AWAY FROM SUB. 22:00 - 00:00 2.00 MOB P PRE PJSM.SKID RIG FLOOR AND LOWER DERRICK. -WALK CASING COMPLEX AWAY FROM DRILLPIPE COMPLEX 8/10/2011 00:00 - 12:00 12.00 MOB N WAIT PRE WAIT ON SUPPORT FOR RIG MOVE DUE TO RIG MAT SHORTAGE. -USE PEAK SOW TO STAGE CASING, POWER, PUMP,AND PIT MODULES ON A PAD IN PREPARATION FOR RIG MOVE TO DRILL SITE 18. -PERFORM 50'TURN WITH DRILLPIPE SHED AND SUB USING STOMPERS 12:00 - 00:00 12.00 MOB N WAIT PRE CONTINUE TO WAIT ON RIG MATS FOR RIG MOVE DUE TO 7ES RIG MOVE -HOLD PRE-SPUD MEETING WITH BOTH CREWS -PERFORM GENERAL HOUSEKEEPING ON PARTS TRAILERS AND BOP DECK -CHANGE OUT TOP DRIVE RAIL SHOES AND WORK ON PREVENTATIVE MAINTENANCE ITEMS 8/11/2011 00:00 - 12:00 12.00 MOB N WAIT PRE CONTINUE TO WAIT FOR RIG MATS FOR RIG MOVE FROM A PAD TO DRILL SITE 18 -BUILD AND INSTALL CUSHIONS FOR ACCUMULATOR ROOM TO DRILLPIPE SHED DOORWAYS -CLEAN DERRICK, PIN JEEP TO SUB, ORGANIZE TRUCK SHOP AND PARTS VAN. 12:00 - 00:00 12.00 MOB N WAIT PRE CONTINUE TO WAIT FOR RIG MATS -CONTINUE GENERAL HOUSEKEEPING IN DERRICK AND RIG SHOP -CHANGE OUT HYDRAULIC FITTINGS ON BOP STACK AND CONTINUE WORKING ON CUSHIONS FOR INTERCONNECTS 8/12/2011 00:00 - 11:00 11.00 MOB N WAIT PRE CONTINUE TO WAIT FOR RIG MOVE ON A PAD WHILE RIG MATS ARE BEING LAYED ON A PAD AND DS 18 -PERFORM GENERAL HOUSEKEEPING AND PREVENTATIVE MAINTENANCE ITEMS 11:00 - 00:00 13.00 MOB P PRE MOVE RIG SUB AND CASING SHED COMPLEX TO DRILL SITE 18 -SPOT AND SHIM SUB OVER WELL 18-12 WHILE ROUND TRIPPING SOWS TO A PAD TO GET REMAINING RIG MODULES. Printed 10/17/2011 1:40:46PM North . .rica -ALASKA- BP Page 2 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date: 9/20/2011 X3-0106Y-C: (8,376,273.00) III' Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 8/13/2011 00:00 - 13:00 13.00 MOB P PRE CONTINUE MOVING RIG MODULES FROM A PAD TO DRILL SITE 18 -MOVING TWO MODULES AT A TIME, PULLING EACH MODULE WITH TWO SOWS. -SPOT DP COMPLEX NEXT TO SUB AND SECURE -SPOT CASING SHED NEXT TO DP SHED 13:00 - 20:30 7.50 RIGU P PRE PERFORM DERRICK INSPECTION, RAISE DERRICK,AND SKID RIG FLOOR. FINISH SPOTTING PITS,CASING SHED, PUMPS,AND MOTOR COMPLEX 20:30 - 00:00 3.50 RIGU P PRE RIG UP AND CONNECT ALL MODULES. -LOWER C-SECTION RAISE CATTLE CHUTE AND PIN IN PLACE WORK ON CONNECTING ELECTRICAL CABLES AND SERVICE LINES 8/14/2011 00:00 - 07:00 7.00 RIGU P PRE CONTINUE RIGGING UP ON 18-12C -TAKE ON 8.5 PPG SEAWATER TO THE PITS -RIG UP TO PRESSURE TEST OA AND T X IA USING RIG INJECTION PUMP -FINISH CONNECTING ELECTRICAL CABLES AND SERVICE LINES NOTIFIED MATT HERRERA WITH AOGCC OF UPCOMING BOPE TEST AT 06:50 HRS RIG ACCEPT ON 8/14/2011 AT 02:00 HRS 07:00 - 09:00 2.00 RIGU P PRE MIT OA TO 250 PSI FOR 5 MIN AND 2000 PSI FOR 30 MIN-TEST PASSED -4.3 BBLS TO REACH TEST PRESSURE -LOST 71 PSI IN FIRST 15 MIN -LOST 20 PSI IN SECOND 15 MIN -4.3 BBLS RETURNED MIT T X IA TO 250 PSI FOR 5 MIN AND 2000 PSI FOR 30 MIN-TEST PASSED -1.1 BBLS TO REACH TEST PRESSURE -LOST 61 PSI IN FIRST 15 MIN -LOST 24 PSI IN SECOND 15 MIN -1.1 BBLS RETURNED RIG DOWN TEST EQUIPMENT 09:00 - 11:30 2.50 WHSUR P DECOMP PJSM. PICK UP LUBRICATOR TO RIG FLOOR. -R/U AND TEST TO 250 PSI FOR 5 MIN AND 3500 PSI FOR 5 MIN.GOOD TEST. -PULL BPV -R/D LUBRICATOR 11:30 14:00 2.50 RIGU P DECOMP PERFORM DERRICK INSPECTION AND SCOPE DERRICK UP. R/U TO DISPLACE FREEZE PROTECT. 14:00 - 16:30 2.50 WHSUR P DECOMP PJSM FOR DISPLACING FREEZE PROTECT. -PUMP 30 BBLS 8.5 PPG SEAWATER DOWN IA AND DISPLACE FREEZE PROTECT TO 500 BBL OPEN TOP TANK. • -R/U AND PUMP 230 BBLS SEAWATER DOWN TUBING,TAKING RETURNS TO OPEN TOP TANK. -21 BBLS OF DIESEL RETURNED FROM TBG, 201 BBLS OF DIESEL RETURNED FROM IA. -TOTAL VOLUME PUMPED 260 BBLS,TOTAL VOLUME RETURNED 260 BBLS. -MONITOR WELL FOR 10 MIN-STATIC. 16:30 - 17:30 1.00 WHSUR P DECOMP DRY ROD IN BPV. Printed 10/17/2011 1:40.46PM North. ;rica -ALASKA- BP Page 3 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release: 9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 • Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) ft 17:30 - 19:30 2.00 WHSUR P DECOMP TEST BPV FROM BELOW TO 250 PSI LOW/ ■- 2000 PSI HIGH FOR 5 MIN-GOOD TEST. -R/D TEST EQUIPMENT AND B/D LINES. • 19:30 - 22:00 2.50 WHSUR P DECOMP ()RAIN TREE AND WD. INSPECT AND CLEAN THREADS ON TBG HANGER-GOOD. -INSTALL BLANKING PLUG WITH 6.5 LEFT HAND TURNS ONTO HANGER. -REMOVE RUNNING TOOL FROM BLANKING PLUG WITH 8.5 RH TURNS OPEN ALL RAM DOORS ON BOP AND VISUALLY INSPECT PER HIGH GOR SOP. INSPECTION WITNESSED BY BP WSL GARRET STAUDINGER AND DOYON TOURPUSHER JOHN NEWMAN. 22:00 - 23:00 1.00 WHSUR P DECOMP HOLD PRE-SPUD MEETING AND TABLE TOP RIG EVAC DRILL WITH CREW. 23:00 - 00:00 1.00 BOPSUR P DECOMP P/U AND INSTALL 11"X 13-5/8"DOUBLE STUDDED ADAPTER TO TUBING SPOOL. 8/15/2011 00:00 - 06:00 6.00 BOPSUR P DECOMP CONTINUE N/U BOPE. P/U 1.5'AND 14'HIGH PRESSURE RISER SECTIONS IN BOP DECK AND M/U TO 11"X 13-5/8"DSA. N/U HIGH PRESSURE RISER SECTIONS.MOVE STACK INTO PLACE,R/U CHOKE HOSE AND MOVE FLOW LINE BOX. 06:00 - 07:00 1.00 BOPSUR P ■- DECOMP TEST EQUIPMENT. -P KICK WHILE KICK WHILE TRIPPING DRILL, 17-BBL TO FILL GAS BUSTER. 07:00 - 12:00 5.00 BOPSUR P 9.29 DECOMP TEST BOPE TO 250 PSI LOW,3500 PSI HIGH AS PER AOGCC AND BP POLICY.TEST ANNULAR PREVENTER TO 250 PSI LOW,3500 PSI HIGH. EACH TEST 5 CHARTED MINUTES. TEST THE UPPER VARIABLES AND LOWER VARIABLES WITH 3-1/2 IN AND 5 IN TEST JOINTS.TEST THE ANNULAR PREVENTER a. WITH 3-1/2 IN TEST JOINT.NO FAILED TESTS. V 1 TEST WITNESS WAIVED BY MATT HERRERA WITH AOGCC.TEST WITNESSED BY WSL MITCH SKINNER AND TOOLPUSHER SAM DYE. PERFORMED ACCUMULATOR TEST:SYSTEM PRESSURE 3,050 PSI,PRESSURE AFTER CLOSING ALL RAMS AND ANNULAR PREVENTER 1,850 PSI.RECOVERED 1ST 200 PSI-38 SECONDS.6 NITROGEN BOTTLES, AVERAGE PRESSURE=2,450-PSI. CLOSING TIMES -ANNULAR=24 SECONDS -UPPER VBR= 19 SECONDS -BLIND/SHEARS=16 SECONDS -LOWER VBR= 16 SECONDS -CHOKE HCR=2 SECONDS -KILL HCR=2 SECONDS 12:00 - 13:00 1.00 BOPSUR P 9.29 DECOMP B/D&R/D TEST EQUIPMENT. -RE-ALIGN VALVES. -BRING IN LUBRICATOR THROUGH THE PIPE SHED. 13:00 - 14:00 1.00 BOPSUR P 9.29 DECOMP PULL BLANKING PLUG WITH DRILL PIPE AND L/D. P/U LUBRICATOR EXTENSION&CONTROL LINES UP SLIDE. Printed 10/17/2011 1:40:46PM North . rica -ALASKA- BP Page 4 of 34 Operation Summary Report Common Well Name: 18-12 1 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr (ft) 14:00 - 16:30 2.50 BOPSUR P ■ 9.29 DECOMP P/U DUTCH RISER&SET IN PLACE,RILDS. -P/U LUBRICATOR AND ATTACH TO DUTCH RISER. 16:30 - 17:00 0.50 BOPSUR N SFAL 9.29 DECOMP ATTEMPT TO PRESSURE TEST LUBRICATOR &DUTCH SYTEM AGAINST TOP OF BLIND/SHEARS,TEST FAILED. -PRESSURE LEAKING PAST BLIND/SHEARS. 17:00 - 19:00 2.00 BOPSUR N SFAL 9.29 DECOMP TROUBLESHOOT,ATTEMPT TO RE-TEST, TEST FAILED 19:00 - 19:30 0.50 BOPSUR N SFAL 9.29 DECOMP, RE-INSTALL BLANKING PLUG&RE-TEST PLUG&BLIND/SHEARS FROM BOTTOM,TEST • PASSED. -250-PSI LOW/3,500-PSI HIGH FOR 5-MIN 19:30 - 23:30 4.00 BOPSUR N SFAL 9.29 DECOMP CONSULT TOWN, DRAIN STACK. -OPEN BLIND/SHEARS DOORS -REMOVE BLIND/SHEARS AND INSTALL NEW BLIND RAMS _ 23:30 - 00:00 0.50 BOPSUR N SFAL 9.29 DECOMP R/U TEST EQUIPMENT. -TEST BLIND RAMS AGAINST BLANKING PLUG TO 250-PSI LOW/3,500-PSI HIGH FOR 5-MIN,TEST PASSED 8/16/2011 00:00 - 02:00 2.00 BOPSUR N SFAL DECOMP PULL BLANKING PLUG WITH DRILLPIPE. R/U DUTCH RISER AND LUBRICATOR -TEST LUBRICATOR AGAINST BLIND RAMS TO 250 PSI LOW/3500 PSI HIGH FOR 5 MIN EACH-GOOD TEST 02:00 - 04:00 2.00 BOPSUR N SFAL DECOMP ATTEMPT TO PULL BPV WITH LUBRICATOR WITH TWO ATTEMPTS,NO SUCCESS. 04:00 - 05:00 1.00 BOPSUR P - ® DECOMP CHANGE PULLING TOOL.PULL BPV WITH LUBRICATOR. 05:00 - 06:00 1.00 BOPSUR P - DECOMP R/D LUBRICATOR AND DUTCH RISER SYSTEM. 06:00 - 10:00 4.00 PULL P DECOMP RIG UP TO PULL TuBING. -C/O SAVER SUB TO 4-1/2"IF LONG BAILS-R/U MEDIUM BAILS WITH BX ELEVATORS AND ROTATOR -CLEAN&CLEAR RIG FLOOR 10:00 - 11:30 1.50 PULL P -_ DECOMP P/U LANDING JT&R/U CIRC EQUIPMENT. BOLDS AS PER FMC REP. 11:30 - 14:00 2.50 PULL P DECOMP PULL TUBING 5'&MONITOR WELL(STATIC). -PULL HANGER FREE WITH NO OVERPULL, 70K UP WEIGHT -REVERSE CIRC 40 BBL SOAP PILL FOLLOWED BY 300 BBL SEAWATER TO OPEN TOP TANK -126 GPM,190 PSI 14:00 - 14:30 0.50 PULL P -_ DECOMP BLOW DOWN&RIG DOWN CIRC EQUIPMENT. MONITOR WELL-STATIC 14:30 - 16:00 1.50 PULL P -_ DECOMP PULL TBG HANGER ABOVE RIG FLOOR AND LD. 16:00 - 23:00 7.00 PULL P DECO • " ► Z01/ .28'MD TO SURFACE. -RECOVERED 115 JOINTS, ONE 2.70'CUT JT, CONTROL LINE,AND 38 STEEL BANDS MONITOR WELL ON TRIP TANK,HOLE TAKING CALCULATED FILL. 23:00 - 23:30 0.50 PULL P -_ DECOMP CLEAN AND CLEAR RIG FLOOR,L/D CSG RUNNING TOOLS,C/O SLIP INSERTS. 23:30 - 00:00 0.50 CLEAN P DECOMP INSTALL WEAR RING Printed 10/17/2011 1:40:46PM North Inca -ALASKA- BP Page 5 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 8/17/2011 00:00 - 02:00 2.00 CLEAN P ■- DECOMP PULL TEST JOINT,CONTINUE R/D CASING EQUIP.&RU BHA HANDLING EQUIP. PJSM, P/U 5"DP 02:00 - 04:00 2.00 CLEAN P DECOMP M/U CLEANOUT BHA AS PER BOT REP. -8-1/2"USED MILL TOOTH BIT,BOOT BASKETS(2),WATERMELON MILL,DRILL COLLARS,5"HWDP. -RIH TO 865'MD,MONITOR HOLE ON TRIP TANK 04:00 - 10:30 6.50 CLEAN P DECOMP RIH WITH CLEANOUT BHA ON 5"DP SINGLES -TAG TUBING STUB 3643'MD -POOH TO 3280'MD,MONITOR DISPLACEMENT ON TRIP TANK -P/U WT=117K,S/OWT=110K 10:30 - 11:30 1.00 CLEAN P DECOMP ROTATE,RECIPROCATE,&CIRCULATE -F/3280'MD,T/3220'MD -PUMP 22 BBL SOAP PILL,600 GPM,2250 PSI -OBTAIN SLOW PUMP RATES AND MONITOR WELL(STATIC) 11:30 - 17:30 6.00 CLEAN P DECOMP POOH ON ELEVATORS TO SURFACE -POOH FROM 3220'MD TO SURFACE -MONITOR HOLE FILL ON TRIP TANK,WELL TAKING CALC FILL. 17:30 - 18:30 1.00 CLEAN P . DECOMP RACK BACK HWDP&COLLARS L/D SCRAPER AND BOOT BASKETS EMPTY 18:30 - 19:00 0.50 CLEAN P DECOMP CLEAN AND CLEAR RIG FLOOR 19:00 - 00:00 5.00 CLEAN P DECOMP SINGLE IN HOLE W/5"DP FROM PIPESHED T/ 2919' MONITOR HOLE ON TRIP TANK,HOLE GIVING PROPER DISPLACEMENT 8/18/2011 00:00 - 02:00 2.00 CLEAN P DECOMP RIH WITH 5"DP SINGLES FROM PIPE SHED MONITOR HOLE ON TRIP TANK,HOLE GIVING PROPER DISPLACEMENT STARTED MONITORING OA AT 00:00 HRS AS PER PACK-OFF CHANGE OUT SOP. 02:00 - 03:00 1.00 CLEAN P DECOMP RESPOND TO INJURED PERSON WITH BP MEDICAL TEAM. -HELD AAR/SAFETY STAND DOWN WITH CREW 03:00 - 06:00 3.00 CLEAN P ■- DECOMP POOH STANDING BACK 5"DP MONITOR OR HOLE FILL ON TRI P TANK,WELL TAKING CALC FILL. 06:00 - 09:30 3.50 CLEAN P DECOMP SINGLE IN HOLE WITH 5"DPTO 2,072'MD. MONITOR DISPLACEMENT ON TRIP TANK, CALC DISPLACEMENT CORRECT -MONITOR WELL STATIC 09:30 - 12:00 2.50 CLEAN P ■- DECOMP POOH OR HOLE BACK ON TRIP F/TANK,WELL D MONITOR HOLE FILL ON TRIP TANK,W TAKING CALC FILL 12:00 - 16:00 4.00 CLEAN P DECOMP SINGLE IN HOLE WITH 5"DP TO 2,274'-MD MONITOR DISPLACEMENT ON TRIP TANK, CALC DISPLACEMENT CORRECT -MONITOR WELL FOR 10 MIN-STATIC 16:00 - 18:30 2.50 CLEAN P DECOMP -POOH F/2,274'-MD,RACKING BACK 24 STANDS MONITOR HOLE FILL ON TRIP TANK,WELL TAKING CALC FILL Printed 10/17/2011 1:40:46PM North , rica -ALASKA- BP Page 6 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 A ctive Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:30 - 20:30 2.00 DHB P DECOMP PJSM.R/U SLB E-LINE UNIT TO RUN EZSV -HOLD AAR WITH SLB AND RIG CREW ON E-LINE RIG UP. 20:30 - 21:30 1.00 DHB P DECOMP RIH WITH EZSV ON SLB E-LINE SET TOP OF EZSV • 3,285 ELMD 21:30 - 22:00 0.50 DHB P DECOMP POOH WITH SLB E-LINE 22:00 - 23:00 1.00 DHB P DECOMP RIG DOWN E-LINE,CLEAN AND CLEAR RIG FLOOR. 23:00 - 00:00 1.00 DHB P DECOMP M/U 5"SHEAR JOINT WITH TIW&LAY DOWN IN PIPE SHED. R/U TO PRESSURE TEST 9-5/8"CASING AND EZSV. 8/19/2011 00:00 - 01:00 1.00 DHB P DECOMP PRESSURE TEST 9-5/8"CSG AND EZSV TO 250 PSI FOR 5 MIN AND 3500 PSI FOR 30 MIN- TEST PASSED-WTL APPROVAL TO CONTINUE OPERATIONS 3.1 BBLS TO REACH TEST PRESSURE -LOST 14 PSI IN FIRST 15 MIN -LOST 0 PSI IN SECOND 15 MIN -3.1 BBLS RETURNED 01:00 - 02:00 1.00 WHIP P WEXIT HOLD AAR WITH CREW TO CAPTURE LESSONS LEARNED FROM PREVIOUS SLICK-LINE RIG UP OPERATION. HOLD PJSM FOR MAKING UP WHIPSTOCK/MILLING BHA 02:00 - 06:00 4.00 WHIP P WEXIT M/U WHIPSTOCK/MILLING BHA WITH MILLS, MWD,HWDP,AND DRILL COLLARS. -SHALLOW HOLE TEST MWD @ 733'MD WITH 421 GPM/525 PSI,GOOD DETECTION 06:00 - 09:00 3.00 WHIP P WEXIT RIH WITH WHIPSTOCK BHA ON 5"DP STANDS TO 3213'MD 09:00 - 10:00 1.00 WHIP P__ WEXIT M/U TOP DRIVE FOR SETTING WHIPSTOCK -CIRC AT 423GPM/860 PSI,P/U=131K,S/O= 124K -ORIFNT WHIPSTOCK FACF TO 55 DEGJ_OHS -TCC;F7SV AT 3285'MD -SET BOTTOM TRIP ANCHOR WITH 18K DOWN -P/U 10K OVER TO CONFIRM SET -S/O 48K TO SHEAR OFF WHIPSTOCK _ TOP OF WS SET AT 3264'MD 10:00 - 10:30 0.50 WHIP P WEXIT POOH TO 3129'MD RACKING BACK TWO STANDS 10:30 - 11:30 1.00 WHIP P WEXIT PJSM.P/U RTTS PACKER,RIH W/1 STAND TO 100'MD -P/U WT.=129K,S/O WT.=122K • 11:30 - 12:00 0.50 WHIP P WEXIT SET RTTS PACKER AT 100'MD,UD RTTS RUNNING TOOL. TEST RTTS PACKER -250 PSI LOW/2000 PSI HIGH FOR 5 MIN. EACH(GOOD TEST) 12:00 - 18:00 6.00 BOPSUR P WEXIT DRAIN STACK,PULL WEAR RING,BLOW DOWN CHOKE AND KILL LINES.PULL STRIP-O-MATIC,FLOW RISER,CHOKE AND KILL LINES.N/D BOPE AND MOVE TO SIDE. PULL HIGH PRESSURE RISER ABOVE FLOOR AND UD. 18:00 - 20:00 2.00 BOPSUR P WEXIT PULL OLD TBG SPOOL,PULL 9-5/8"PACK-OFF -10K OVERPULL TO PULL PACK-OFF INSTALL NEW 9-5/8"PACK-OFF Printed 10/17/2011 1.40:46PM North ;rica -ALASKA- BP Page 7 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date: 9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:00 - 22:30 2.50 BOPSUR P WEXIT N/U NEW TBG SPOOL 22:30 00:00 1.50 BOPSUR P WEXIT TEST PACK-OFF -250 PSI LOW FOR 15 MIN/3500 PSI HIGH FOR 30 MIN(GOOD TEST) 8/20/2011 00:00 - 06:00 6.00 BOPSUR P WEXIT N/U HIGH PRESSURE RISER AND BOP, INSTALL BLIND SHEAR RAMS. R/U AND PERFORM FULL BODY TEST ON BOPE-TEST BREAKS,TEST CHOKE AND KILL LINE CONNECTIONS AND BLIND SHEAR RAMS TO 250 PSI/3500 PSI FOR 5 MIN EACH -GOOD TEST.TEST WITNESSED BY BP WSL GARRET STAUDINGER AND TREVOR HYATT. 06:00 - 07:00 1.00 WHIP P WEXIT INSTALL BX ELEVATORS AND ROTATOR ASSEMBLY 07:00 - 08:00 1.00 WHIP P WEXIT M/U RTTS RUNNING TOOL, RIH M/U FOSV AND RETRIEVE RTTS AS PER HES REP W/ ANNULAR CLOSED 08:00 - 09:30 1.50 WHIP P WEXIT RIH FROM 3097'MD TO 3255 MD DISPLACE WELL TO 9.6 PPG LSND MILLING FLUID -550 GPM,1200 PSI -OBTAIN SPR AT 3255 MD/3055'TVD 09:30 - 15:00 5.50 STWHIP P WEXIT MILL WINDOW AS PER BOT REP FROM 3264' MD TO 3281'MD -100 RPM,450 GPM,4-15K TQ,1100 PSI ��I -RECOVERED 290 LBS OF METAL 15:00 - 16:00 1.00 STWHIP P WEXIT DRILL 20'OF NEW HOLE TO 3301'MD,3097' TVD -453 GPM,1100 PSI,100 RPM,2-5K TQ,10K WOB TOW 3264'MD BOW 3281'MD 16:00 - 17:00 1.00 STWHIP P WEXIT PUMP 25 BBL SUPER SWEEP WHILE REAMING THROUGH WINDOW-MINIMAL INCREASE IN CUTTINGS RETURNED WITH SWEEP -500 GPM,1275 PSI 17:00 - 18:00 1.00 STWHIP P WEXIT PULL UP INTO CASING TO 3207'MD AND PERFORM LOT -OBTAIN 12.7 PPG LEAK OFF PRESSURE -W I L APPROVAL TO CONTINUE OPERATIONS WITH A 25 BBL KICK TOLERANCE 18:00 - 18:30 0.50 STWHIP P WEXIT POOH TO 3169'MD,OBTAIN SPRAT 3169'MD /3097'TVD,PUMP DRY JOB,BLOW DOWN TOP DRIVE -MONITOR WELL,HOLE TAKING CORRECT FILL 18:30 - 19:30 1.00 STWHIP P WEXIT POOH TO 2350'MD IRON DERRICKMAN STOPPED OPERATING CORRECTLY WHEN STARTING TO STAND BACK DRILL PIPE ON DRILLERS SIDE 19:30 - 20:00 0.50 STWHIP P WEXIT SERVICE T/D,BLOCKS,ELEVATORS AND IRON DERRICKMAN 20:00 - 00:00 4.00 STWHIP N RREP 2,348.79 WEXIT TROUBLESHOOT IRON DERRICKMAN 8/21/2011 00:00 - 00:30 0.50 STWHIP N RREP WEXIT CONT.TROUBLESHOOT IRON DERRICKMAN, MONITOR WELL VIA TRIP TANK. Printed 10/17/2011 1:40:46PM North . ,rica -ALASKA- BP Page 8 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 00:30 - 01:00 0.50 STWHIP P WEXIT SERVICE T/D, BLOCKS,ELEVATORS AND _ IRON DERRICKMAN 01:00 - 02:30 1.50 STWHIP P WEXIT POOH AND STAND BACK 5"DP,MONITOR WELL-HOLE TAKING CORRECT FILL 02:30 - 05:00 2.50 STWHIP P WEXIT STAND BACK HWDP,L/D DRILL COLLARS AND MILLING ASSEMBLY -PILOT MILL 1/4"UNDER GAUGE -MIDDLE AND UPPER STRING MILL IN GAUGE 05:00 - 06:30 1.50 STWHIP P WEXIT JET BOP STACK. PERFORM WEEKLY FUNCTION TEST OF BOPE. 06:30 - 11:00 4.50 STWHIP P WEXIT P/U 8-1J2"INTERMEDIATE DRILLING BHA -SHALLOW TEST MWD,450 GPM,740 PSI (GOOD TEST) 11:00 - 11:30 0.50 STWHIP P WEXIT CHANGE OUT SLIP INSERTS,MONITOR WELL VIA TRIP TANK 11:30 - 13:00 1.50 STWHIP P WEXIT RIH WITH 5"DP SINGLES FROM PIPE SHED TO 1995'MD, MONITOR DISPLACEMENT ON TRIP TANK 13:00 - 14:00 1.00 STWHIP P WEXIT CALIBRATE MUD LOGGERS GAS DETECTOR -FROM STATIC TO 650 GPM,1700 PSI 14:00 - 15:30 1.50 STWHIP P WEXIT RIH WITH 5"DP SINGLES FROM PIPE SHED TO 3218'MD 15:30 - 16:00 0.50 STWHIP P WEXIT ORIENT TOOLFACE 60L ESTABLISH BASELINE ECD=10.28 PPG OBTAIN SPR @ 3301'MD,3097'TVD #1 MP-20/30 SPM=160/220 PSI #2 MP-20/30 SPM=160/220 PSI MW 9.6 IN/9.6 OUT 16:00 - 20:00 4.00 DRILL P INT1 SLIDE THROUGH WINDOW DRILL 8-1/2"INTERMEDIATE FROM 3301'MD TO 3591'MD -500 GPM,1475 PSI ON/1300 PSI OFF, -MW 9.6 IN/9.6 OUT, ECD=10.47 PPG 50 RPM,4K TQ -4-12 WOB, -P/U=128K,S/O=120K,ROT=124K NO REPORTED LOSSES 20:00 - 21:30 1.50 DRILL P INT1 CIRCULATE AND RECIPROCATE HOLE CLEAN WHILE RIGGING UP TO RUN GYRO 21:30 - 00:00 2.50 DRILL P INT1 RUN GYRO,POOH AND LID,FOLLOWED BY AAR 8/22/2011 00:00 - 12:00 12.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE FROM 3591'MD TO 4826'MD -602 GPM,2200 PSI ON/2010 PSI OFF, -MW 9.6 IN/9.6 OUT,ECD=11.33 PPG -100 RPM,5-6K TQ -3K WOB -P/U=144K,S/O=119K, ROT=130K -AST=1.97,ART=3.19,ADT=5.16 SPR'S @ 3973'MD,3598'ND-MW=9.65 PPG,TIME=04:00 #1 MP-20/30 SPM=160/210 PSI #2 MP-20/30 SPM=160/210 PSI SPR'S @ 4732'MD,3970'ND-MW=9.75 PPG,TIME=11:10 #1 MP-20/30 SPM=200/250 PSI #2 MP-20/30 SPM=200/250 PSI Printed 10/17/2011 1.40:46PM North . rica -ALASKA- BP Page 9 of 34 Operation Summary Report Common Well Name 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 00:00 12.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE FROM 4826'MD TO 6250'MD -650 GPM,2885 PSI ON/2685 PSI OFF, -MW 9.7 IN/9.7 OUT,ECD=11.54 PPG 100 RPM,9-10K TQ -2-14K WOB -P/U=168K, S/0=124K,ROT=143K -AST=0.62,ART=4.95,ADT=5.57 SPR'S @ 5211'MD,4175'TVD-MW=9.75 PPG,TIME= 15:30 #1 MP-20/30 SPM=200/260 PSI #2 MP-20/30 SPM=200/260 PSI SPR'S @ 5772'MD,4416'TVD-MW=9.85 PPG,TIME=20:00 #1 MP-20/30 SPM=240/300 PSI #2 MP-20/30 SPM=220/300 PSI SPR'S @ 6250'MD,4624'TVD-MW=9.6 PPG, TIME=23:30 #1 MP 20/30 SPM=230/320 PSI #2 MP-20/30 SPM=230/320 PSI 8/23/2011 00:00 - 04:00 4.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE FROM 6250'MD TO 6590'MD -650 GPM,3080 PSI ON/2950 PSI OFF, -MW 9.6 IN/9.6 OUT,ECD=11.65 PPG -100 RPM,9-10K TQ -8-9K WOB -P/U=170K,S/O=124K,ROT=141K PUMP 30 BBL HI-VIS SWEEP SURFACE TO SURFACE -MINIMAL CHANGE IN CUTTINGS RETURNED 04:00 - 05:30 1.50 DRILL P INT1 'REACHING ECD HARDLINE OF 1.0 PPG OVER CALCULATED CLEAN HOLE ECD ROTATE,RECIPROCATE,AND CIRCULATE TO CONDITION MUD AND CLEAN HOLE. -100 RPM,650 GPM,2860 PSI,9K TQ 05:30 - 09:30 4.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE FROM6590'MD TO 7096'MD -648 GPM,3230 PSI ON/2930 PSI OFF, -MW 9.6 IN/9.6 OUT,ECD=11.66 PPG -100 RPM,10-11K TQ -2K WOB -P/U=174K,S/0=127K,ROT=144K SPR'S @ 6813'MD,4868'ND-MW=9.6 PPG, TIME=07:15 #1 MP-20/30 SPM=230/320 PSI #2 MP-20/30 SPM=230/320 PSI 09:30 - 11:30 2.00 DRILL P INT1 CHANGE OUT 2 SWABS ON MUD PUMP#1 WHILE ROTATING,RECIPROCATING AND CIRCULATING -357 GPM,1230 PSI,100 RPM,10-11K TQ Printed 10/17/2011 1:40:46PM North . :rica -ALASKA- BP Page 10 of 34 Operation Summary Report Common Well Name. 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 00:00 12.50 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE FROM 7096'MD TO 8366'MD 645 GPM,3400 PSI ON/3200 PSI OFF, -MW 9.65 IN/9.65 OUT, ECD=11.5 PPG -100 RPM,11-15K TQ -6-10K WOB -P/U=201K,S/O=124K,ROT=157K -AST=0.4,ART=4.44,ADT=4.48 SPR'S @ 7379'MD,5100'ND-MW=9.6 PPG, TIME=13:30 #1 MP 20/30 SPM=260/360 PSI #2 MP-20/30 SPM=240/340 PSI SPR'S @ 7829'MD,5298'ND-MW=9.75 PPG,TIME=18:30 #1 MP-20/30 SPM=280/380 PSI #2 MP-20/30 SPM=260/360 PSI SPR'S @ 8320'MD,5498'ND-MW=9.65 PPG,TIME=23:15 #1 MP-20/30 SPM=260/360 PSI #2 MP-20/30 SPM=240/360 PSI 8/24/2011 00:00 - 01:00 1.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE FROM 8366'MD TO 8508'MD. -645 GPM,3410 PSI ON/3200 PSI OFF -MW 9.6 IN/9.7 OUT, ECD=11.76 PPG -100 RPM,16-19K TQ -8KWOB -P/U=211K,S/0=125K,ROT=154K CHANGED#1 SWAB AND LINER IN#1 MUD PUMP 01:00 - 02:00 1.00 DRILL P INT1 CHANGED SWAB AND LINER ON#1 MUD PUMP CIRCULATE, ROTATE,AND RECIPROCATE -380 GPM,1450 PSI,100 RPM 02:00 - 09:00 7.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 8508'TO 9073'MD_ -648 GPM,3520 PSI ON/3360 PSI OFF -MW 9.6 IN/9.6 OUT, ECD 11.53 -100 RPM,17-20K TQ -WOB 8K -P/U=223K,S/0=124K,ROT=160K EXPERIENCE MWD SURVEY QA/QC ISSUES SPR'S @ 8885'MD,5750'ND-MW=9.65 PPG,TIME=06:00 #1 MP-20/30 SPM=320/420 PSI #2 MP-20/30 SPM=320/420 PSI 09:00 - 11:00 2.00 DRILL N DPRB 9,073.00 INT1 CIRCULATE HOLE WHILE ROTATING AND RECIPROCATING FROM 9073'TO 8885', TROUBLESHOOT MWD AND TAKE CHECK SHOTS. RACK BACK 1 STAND EVERY 30 MINUTES. -650 GPM,3320 PSI -100 RPM,15-16K TQ 11:00 - 12:00 1.00 DRILL N DPRB 9,073.00 INT1 MONITOR WELL FOR 10 MINUTES-NO FLOW. POH ON ELEVATORS FROM 8885'TO 8220' MD. CORRECT DISPLACEMENT. PUMPED 15 BBLS.OF 11.3 PPG SLUG. Printed 10/17/2011 1:40:46PM North , :rica -ALASKA - BP Page 11 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual©56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 14:30 2.50 DRILL N DPRB 9,073.00 INT1 CONTINUE POH ON ELEVATORS FROM 8220' TO 6060'MD. TIGHT SPOTS AT 8025'MD, 7450'MD AND 6900'MD. OVERPULLS AT —15K. MONITOR PIPE DISPLACEMENT VIA TRIP TANK. HOLE TAKING PROPER FILL. 14:30 - 19:30 5.00 DRILL N DPRB 9,073.00 INT1 DISPLACE HOLE WITH NEW MUD(9.6 PPG VIS 49)@ 500 GPM,1875 PSI. OBTAINED QUADRANT SURVEYS @ 500 GPM,1845 PSI. CLEAN SURVEYS. DECISION MADE BY TOWN RIG TEAM TO RBIH AND CONTINUE DRILLING AHEAD. 19:30 - 23:00 3.50 DRILL N DPRB 9,073.00 INT1 RIH FROM 6060'TO 8884'MD. WASH AND REAM TIGHT SPOTS AT 6900'MD (20K DOWNWEIGHT),7450'MD AND 8025'MD. -400 GPM,1215 PSI -60 RPM,7-8K TQ CHANGE OUT#1 SWAB IN#2 MUD PUMP 23:00 - 00:00 1.00 DRILL N DPRB 9,073.00 INT1 OBTAIN QUADRANT SURVEYS AT 8884'MD, 8978'MD,9069'MD. -548 GPM,2200 PSI -P/U 200K,S/O 125K 8/25/2011 23:00 - 00:00 1.00 DRILL N DFAL INT1 OBTAIN QUADRANT SURVEYS AT 8884'MD, 8978'MD,9069'MD. -548 GPM,2200 PSI -P/U 200K,S/0 125K 00:00 - 01:00 1.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 9073'MD. 01:00 - 02:00 1.00 DRILL P INT1 CHANGED SWAB AND LINER ON#1 MUD PUMP CIRCULATE,ROTATE AND RECIPROCATE -380 GPM,1450 PSI,100RPM 02:00 - 09:00 7.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 8508'TO 9073'MD. -648 GPM,3520 PSI ON/3360 PSI OFF -MW 9.6 IN/9.6 OUT,ECD 11.53 -100 RPM,17-20K TQ -WOB 8K -P/U=223K,S/O=124K,ROT=160K EXPERIENCE MWD SURVEY QA/QC ISSUES SPR'S @ 8885'MD,5750'TVD-MW=9.65 PPG,TIME=06:00 #1 MP-20/30 SPM=320/420 PSI #2 MP-20/30 SPM=320/420 PS 09:00 - 11:00 2.00 DRILL N DFAL INT1 CIRCULATE HOLE WHILE ROTATING AND RECIPROCATING FROM 9073'TO 8885', TROUBLESHOOT MWD AND TAKE CHECK SHOTS. RACK BACK 1 STAND EVERY 30 MINUTES. -650 GPM,3320 PSI -100 RPM,15-16K TQ 11:00 - 12:00 1.00 DRILL N DFAL INT1 MONITOR WELL FOR 10 MINUTES-NO FLOW. POH ON ELEVATORS FROM 8885'TO 8220' MD. CORRECT DISPLACEMENT. PUMPED 15 BBLS.OF 11.3 PPG SLUG. Printed 10/17/2011 1:40:46PM North . ;rica -ALASKA- BP Page 12 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project: Prudhoe Bay Site:PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 14:30 2.50 DRILL N DFAL INT1 CONTINUE POH ON ELEVATORS FROM 82220' TO 6060 MD. TIGHT SPOTS AT 8025'MD,7450 MD AND 6900'MD. OVERPULLS AT—15K. MONITOR PIPE DISPLACEMENT VIA TRIP TANK. HOLE TAKING PROPER FILL. 14:30 - 19:30 5.00 DRILL N DFAL INT1 DISPLACE HOLE WITH NEW MUD(9.6 PPG VIS 49)@ 500 GPM,1875 PSI. OBTAINED QUADRANT SURVEYS @ 500 GPM,1845 PSI. CLEAN SURVEYS. DECISION MADE BY TOWN RIG TEAM TO RBIH AND CONTINUE DRILLING AHEAD. 19:30 - 23:00 3.50 DRILL N DFAL INT1 RIH FROM 6060'TO 8884'MD. WASH AND REAM TIGHT SPOTS AT 6900' MD (20KDOWNWEIGHT),7450'MD AND 8025'MD. -400 GPM,1215 PSI -60 RPM,708K TQ CHANGE OUT#1 SWAB IN#2 MUD PUMP 8/26/2011 00:00 - 12:00 12.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 1 10337'TO 11310'MD. -647 GPM,3480 PSI ON/2960 PSI OFF -MW 9.65 IN/9.65 OUT,ECD 10.95 -110 RPM,17-18K TQ -WOB 15K -P/U=238K,S/0=143K,ROT=178K -AST=1.35,ART=5.98,ADT=7.33 PUMPED 34 BBLS WALL-NUT SWEEP(30 PPB) AT 10440'MD -25%INCREASE IN CUTTINGS RETURNED SPR'S @ 10767'MD,6557'TVD-MW=9.65 PPG,TIME=05:30 #1 MP-20/30 SPM=320/420 PSI #2 MP-20/30 SPM=320/420 PSI 12:00 - 00:00 12.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 11310'TO 12130'MD. -650 GPM,3790 PSI ON/3380 PSI OFF -MW 9.65 IN/9.65 OUT, ECD 11.18 -110 RPM,18-22K TQ -WOB 10-18K -P/U=247K,S/O=153K,ROT=170K -AST=2.93,ART=3.79,ADT=6.72 SPR'S @ 11331'MD,6799'TVD-MW=9.65 PPG,TIME=12:30 #1 MP-20/30 SPM=370/480 PSI #2 MP-20/30 SPM=370/480 PSI SPR'S @ 11800'MD,7006'TVD-MW=9.65 PPG,TIME=17:45 #1 MP-20/30 SPM=400/500 PSI #2 MP-20/30 SPM=400/500 PSI 1 1 Printed 10/17/2011 1:40:46PM North , rica -ALASKA- BP Page 13 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site:PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual©56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 8/27/2011 00:00 - 06:00 6.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 12130'TO 12772'MD. -650 GPM,4050 PSI ON/3610 PSI OFF -MW 9.7 IN/9.7 OUT, ECD 11.16 -110 RPM,22-23K TQ -WOB 12K -P/U=273K,S/O=158K,ROT=199K AST=4.19,ART=2.77,ADT=6.96 CHANGE OUT SWAB ON#1 MUD PUMP SPR'S @ 12369'MD,7319'TVD-MW=9.6 PPG,TIME=05:15 #1 MP-20/30 SPM=400/500 PSI #2 MP-20/30 SPM=400/500 PSI 06:00 - 18:30 12.50 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 12772'TO 13028'MD. -650 GPM,3980 PSI ON/3650 PSI OFF -MW 9.8 IN/9.9+OUT,ECD 11.34 -110 RPM,20-26K TQ -WOB 12-15K -P/U=293K,S/O=170K,ROT=192K -AST=4.19,ART=2.77,ADT=6.96 MUD WEIGHT STARTING TO CLIMB AFTER ENTERING CM1 CLAYS SPR'S @ 12935'MD,7778'ND-MW=9.9 PPG,TIME=16:15 #1 MP-20/30 SPM=300/400 PSI #2 MP-20/30 SPM=300/400 PSI 18:30 - 20:00 1.50 DRILL P INT1 CIRC HOLE CLEAN,CONDITION MUD FOR DISPLACEMENT -648 GPM,3650 PSI,1000 BBLS -100 RPM,20-22K TQ MONITOR WELL 10 MIN, PJSM MUD V DISPLACEMENT FROM 9.9 PPG TO 10.1 PPG - 20:00 - 22:30 2.50 DRILL P INT1 DISPLACE WELL TO 10.1 PPG MUD -424 GPM,1820 PSI -100 RPM,23K TQ SPR'S @ 13028'MD,7861'TVD-MW=10.1 PPG,TIME=22:15 #1 MP-20/30 SPM=280/400 PSI #2 MP-20/30 SPM=280/400 PSI 22:30 - 00:00 1.50 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 13028'TO 13076'MD. -525 GPM,2689 PSI ON/2591 PSI OFF -MW 10.1 IN/10.1 OUT -WOB 5-8K -P/U=289K,S/O=172K -AST=2.37,ART=2.37,ADT=4.47 8/28/2011 00:00 - 12:00 12.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 13076'TO 13521'MD. -528 GPM,3230 PSI ON/2630 PSI OFF -MW 10.2 IN/10.2 OUT, ECD 11.19 -110 RPM,26K TQ -WOB 15K -P/U=303K,S/O=165K,ROT=212K -AST=2.82,ART=2.08,ADT=4.90 CIRC 1X B/U AT 13490'MD PER THE GEOLOGIST TO DETERMINE TD Printed 10/17/2011 1:40:46PM North . :rica -ALASKA- BP Page 14 of 34 Operation Summary Report Common Well Name. 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. _ UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 14:00 2.00 DRILL P INT1 DRILL 8-1/2"INTERMEDIATE HOLE FROM 13521'TO 13539'MD. -528 GPM,3230 PSI ON/2630 PSI OFF -MW 10.1 IN/10.1 OUT, ECD 11.19 -110 RPM,26K TQ WOB 12-15K CIRC 1X BM AT 13539'MD PER THE GEOLOGIST TO DETERMINE TD /1 INTERMEDIATE TD CALLED AT 13,539'MD, 8300'TVD(8244'TVDSS) SPR'S @ 13539'MD,8300'TVD-MW=10.1 PPG,TIME=13:30 #1 MP-20/30 SPM=270/380 PSI #2 MP-20/30 SPM=280/380 PSI 14:00 - 15:00 1.00 DRILL P INT1 POOH FROM 13539'MD TO 13502'MD,CIRC HOLE CLEAN 1X BM -535 GPM,2545 PSI,ECD 11.08 -100 RPM,22-24K TQ MONITOR HOLE 10 MIN 15:00 - 15:30 0.50 DRILL P INT1 PUMP OUT OF HOLE FROM 13502'MD TO 13220'MD -126 GPM,410 PSI 15:30 - 23:00 7.50 DRILL P INT1 POOH ON ELEVATORS FROM 13220'MD TO 8229'MD, HOLE TAKING CORRECT FILL OBTAIN DIRECTIONAL SURVEY AT 12150'MD MONITOR WELL 10 MIN,SERVICE TOP DRIVE 23:00 - 00:00 1.00 DRILL P INT1 RIH FROM 8229'MD TO 10675'MD,CORRECT FLUID DISPLACEMENT -P/U 237K,S/O 129K -FILL DP EVERY 20 STD 8/29/2011 00:00 - 02:30 2.50 DRILL P_ INT1 RIH FROM 10675'MD TO TD 13539'MD, CORRECT FLUID DISPLACEMENT 02:30 - 07:30 5.00 DRILL P INT1 CIRCULATE,RECIPROCATE AND ROTATE TO CONDITION MUD FROM 13539'MD TO 13444' MD. -630 GPM,3650 PSI, -120 RPM,23K TQ -P/U=303K,S/O=165K 07:30 - 08:30 1.00 DRILL P INT1 PUMP OUT OF HOLE FROM 13539'MD TO 13121'MD -126 GPM,370 PSI 08:30 - 12:00 3.50 DRILL P INT1 POOH ON ELEVATORS FROM 13212'MD TO 7376'MD HOLE TAKING CORRECT FILL 12:00 - 16:30 4.50 DRILL P INT1 POOH ON ELEVATORS FROM 7376'MD TO 3218'MD.HOLE TAKING CORRECT FILL. -UD GHOST REAMER AT 5118'MD -OBTAIN DIRECTIONAL SURVEY AT 3813'MD AND 3753'MD 16:30 - 17:00 0.50 DRILL P INT1 CIRCULATE 1X B/U AT 3218'MD -630 GPM,2150 PSI -60 RPM,2-3K TQ FLOW BOX LEAK TO BOP DECK 17:00 - 18:30 1.50 DRILL N FLUD INT1 OPEN FLOWLINE,NO OBSTRUCTIONS. R/U FLOWLINE,TEST OK.BLOW DOWN TOP DRIVE. 18:30 - 19:30 1.00 DRILL P INT1 POOH ON ELEVATORS FROM 3218'MD TO 858'MD. MONITOR WELL FOR 10 MIN. Printed 10/17/2011 1:40:46PM North . ;rica -ALASKA- BP Page 15 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 is Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual©56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:30 - 22:30 3.00 DRILL P INT1 PJSM FOR PULLING NON-SHEARABLES THROUGH BOP STACK. STAND BACK HWDP AND NON MAG DC.LAY DOWN MWD AND MUD MOTOR. 22:30 - 23:30 1.00 BOPSUR P INT1 DRAIN BOP STACK, PULL WEAR BUSHING, SET TEST PLUG,PJSM FOR BOP TEST. 23:30 - 00:00 0.50 BOPSUR P INT1 TEST BOPE TO 250 PSI LOW,3500 PSI HIGH AS PER AOGCC AND BP POLICY.TEST WITNESSED BY MATT HERRERA WITH AOGCC,WSL MIKE HEFLEY AND TOOLPUSHER JOHN(ERIC)RODLAND. -TEST BLIND SHEAR RAMS TO 250 PSI LOW, 3500 PSI HIGH.CHARTED TEST,5 MINUTES. 8/30/2011 00:00 - 10:00 10.00 BOPSUR P INT1 TEST BOPE TO 250 PSI LOW,3500 PSI HIGH AS PER AOGCC AND BP POLICY.TEST WITNESSED BY MATT HERRERA WITH fpd AOGCC,WSL MIKE HEFLEY,WSL DAVE NEWLON AND TOOLPUSHER ERIC RODLAND TEST BOPE TO 250 PSI LOW,3500 PSI HIGH 17,, AS PER AOGCC AND BP POLICY. TEST ANNULAR PREVENTER TO 250 PSI LOW,3500 PSI HIGH.EACH TEST 5 CHARTED MINUTES. ,�� TEST THE UPPER 4-1/2"X 7"VBR WITH 7" $° TEST JOINT AND LOWER VBR WITH 5"TEST JOINT. 4-1/2"X 7"VBR FAILED TEST. REPLACED FAILED 4-1/2"X 7"VBR AND RETESTED O.K. TEST THE ANNULAR PREVENTER WITH 5"TEST JOINT. H2S SENSOR ON BOP DECK FAILED. REPLACED FAILED SENSOR AND PASSED RETEST. ALL TESTING WITNESSED BY MATT HERRERA WITH AOGCC. TEST WITNESSED BY WSL MIKE HEFLEY AND TOOLPUSHER ERIC RODLAND. PERFORMED ACCUMULATOR TEST:SYSTEM PRESSURE 3,100 PSI. MANIFOLD PRESSURE 1,500-PSI. PRESSURE AFTER CLOSING ALL RAMS AND ANNULAR PREVENTER 1,950 PSI. RECOVERED 1ST 200 PSI-25 SECONDS. FULL RECOVERY IN 79 SECONDS. AVERAGE PRESSURE 6 NITROGEN BOTTLES= 2,300-PSI. CLOSING TIMES: -ANNULAR=18 SECONDS -UPPER VBR=18 SECONDS -BLIND/SHEARS=28 SECONDS -LOWER VBR=21 SECONDS -CHOKE HCR=4 SECONDS -KILL HCR=4 SECONDS 10:00 - 11:00 1.00 BOPSUR P INT1 RIG DOWN TEST EQUIPMENT. PULL TEST PLUG. INSTALL WEAR BUSHING. 11:00 - 12:30 1.50 BOPSUR P INT1 FLOW TEST FLOW BOX AND FLOWLINE 840-GPM. GOOD TEST. LAYED DOWN 3 X 6-1/2"FLEX COLLARS FROM DERRICK. 12:30 - 17:30 5.00 CASING P INT1 RIG UP FLOOR AND HANDLING EQUIPMENT TO RUN 7"INTERMEDIATE LINER CASING. Printed 10/17/2011 1:40:46PM North , rica -ALASKA- BP Page,16 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date: 9/20/2011 X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual©56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:30 - 00:00 6.50 CASING P INT1 M/U 7";26 LB-FT, L-80 BTC-MOD SHOE TRACK. BAKERLOK SHOE TRACK CONNECTIONS. FILL AND CHECK FLOATS (OK). -RIH W/7",26 LB-FT, L-80,VT HC F/127'T/ 1,318'-MD. APPLY JET LUBE SEAL GUARD,TRQ TURN EACH CONNECTION.T/11,950 FT-LBS. FILL EACH JNT. 8/31/2011 00:00 - 00:30 0.50 CASING P INT1 RIH WITH 7",26 LB-FT L-80,VT HC F/1,318'TO 1,359'. MONITOR DISPLACEMENT VIA PIT#4. APPLY JET LUBE SEAL GUARD,TORQUE TURN EACH CONNECTION TO 11,950 FT-LBS. OPTIMUM TORQUE. FILLING PIPE EVERY JOINT AND EVERY 10TH JOINT CIRCULATE 200 ADDITIONAL STROKES. 00:30 - 01:30 1.00 CASING N RREP INT1 REPAIR HYDRAULIC POWER TONGS. 01:30 - 06:00 4.50 CASING P INT1 RIH 7",26 LB-FT L-80,VT HC FROM 1,359'TO 3,002'MD. MONITOR DISPLACEMENT VIA PIT #4. 06:00 - 08:00 2.00 CASING P INT1 CIRCULATED SURFACE TO SURFACE VOLUME AT 5.0-BPM AT 450-PSI. TOTAL STROKES=4210. REPAIRED CASING ELEVATORS. 08:00 - 12:00 4.00 CASING P INT1 RIH 7",26 LB-FT L-80,VT HC FROM 3,002'TO 5,329"MD. MONITOR DISPLACEMENT VIA PIT #4. 12.00 - 19:00 7.00 CASING P INT1 CONTINUED RIH 7",26 LB-FT L-80,VT HC FROM 5,329'TO 7,790'MD. MONITOR DISPLACEMENT VIA PIT#4. P/U WTS.ARE GOOD WITH A.2 FRICTION FACTOR. S/O WT.S FROM.25 TO.3 FRICTION FACTOR. 19:00 - 21:00 2.00 CASING P.. INT1 CIRCULATE SURFACE TO SURFACE 3-5 BPM AND 950-PSI AT 7,790'MD. HEAVY,SOUR MUD IN RETURNS. RETURN MUD PH=7.0. 21:00 - 00:00 3.00 CASING P INT1 CONTINUED RIH 7",26 LB-FT L-80,VT HC FROM 7,790'TO 9,060'MD. MONITOR DISPLACEMENT VIA PIT#4. 9/1/2011 00:00 - 04:00 4.00 CASING P INT1 CONTINUED RIH 7",26 LB-FT L-80,VT HC FROM 9,060'TO 10,455'MD. MONITOR DISPLACEMENT VIA PIT#4. PUSHED AWAY A TOTAL OF 35-BBLS.MUD WHILE RIH WITH 7". 04:00 - 06:30 2.50 CASING P INT1 RIG DOWN 350 TON CASING ELEVATORS AND LONG BAILS. RIG UP SHORT BAILS AND BX DRILL PIPE ELEVATORS. RIG DOWN DOUBLE STACK POWER TONGS AND SET BACK. STAB FOSV WITH HEADPIN. HOOK UP CEMENT LINE AND CIRCULATE HOLE AT 3.0-BPM WHILE RERIGGING HOISTING EQUIPMENT. RIG UP 5"DRILLPIPE HANDLING TOOLS AND EQUIPMENT. 06:30 - 07:30 1.00 CASING P INT1 PICK UP AND MAKE UP 7"X 9-5/8"BAKER FLEX-LOCK LINER HANGER AND 7"X 9-5/8" "HRD-E"ZXPN LINER TOP PACKER WITH HYDRAULIC SETTING TOOL PER BAKER REP. MIX AND INSTALL PAL PLUG. 07:30 - 08:30 1.00 CASING P INT1 CIRCULATE AT 3.0-BPM AT 470-PSI WHILE PAL MIX HARDENING. P/U WT.=265K, S/O WT.=118K Printed 10/17/2011 1:40:46PM North. rice -ALASKA- BP Page 17 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release: 9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date I From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 12:00 3.50 CASING N RREP INT1 TROUBLESHOOT AND REPAIR IRON DERRICKMAN. RECIPROCATE PIPE AND CIRCULATE AT 3.0-BPM AT 470-PSI. 12:00 - 17:30 5.50 CASING P INT1 RIH WITH 7"CASING FROM 10,410'. WASH GOWN EVERY 10TH STAND,WORKED PIPE THROUGH TIGHT SPOT AT 12,448'. P/U WT. TO WORK PIPE FREE-390K. CONTINUE RIH TO 13,489'. MONITOR DISPLACEMENT VIA TRIP TANK. P/U WT.=330K,S/O WT.=124K 17:30 - 18:00 0.50 CASING P INT1 MAKE UP BAKER DRILL PIPE CEMENTING HEAD. ESTABLISH CIRCULATION AT 2.0-BPM AT 960-PSI. TAG BOTTOM AT 13538.5'. PICK UP PIPE TO NEUTRAL. 18:00 - 19:00 1.00 CASING P INT1 CIRCULATE BOTTOMS UP AT 3.5-BPM AT 1,130-PSI. PJSM-BRIEF RIG CREW AND SLB CEMENT CREW ON PLAN FORWARD. 19:00 - 22:30 3.50 CEMT P INT1 B/D CMT LINE TO SLB.LINE UP TO SLB -PUMP 30-BBL OF 12.0-PPG MUD PUSH II. �yw� EST LINES TO 4,500-PSI(OK). 1� PUMP 49.5-BBLS(255 SX)15.8-PPG CLASS G TAIL CMT.YIELD 1.16 FT3/SK. • +wry -RELEASE DRILL PIPE WIPER PLUG,VERIFY �` G PLUG LEFT CMT HEAD. CHASE PLUG W/10-BBL H2O F/SLB WASHING UP LINES. SWAP TO RIG&DISPLACE W/10.2-PPG LSND MUD AT 5-BPM -ICP ONCE CAUGHT CMT 5-BPM,340-PSI. PUMPING PRESSURE STABILIZED AT 1800-PSI AT 5-BPM. -LINER WIPER PLUG LATCH-UP TO CASING WIPER PLUG AT 415 STKS.(41.8-BBLS.) -DECREASED RATE TO 3-BPM AND 1472-PSI AT 3900 STKS. -BUMP PLUG AT 4,373 STKS.AND 1480-PSI y./ (441-BBLS)PUMPED.PUMP EFFICIENCY 96%. -CMT IN PLACE 22:30 HRS. -ESTIMATED TOC @ 1,500'ABOVE SHOE AT 13,539'. 22:30 - 23:00 0.50 CASING P INT1 PRESSURE T/2,000-PSI,SET LINER HANGER. S/O&CONFIRM LINER HANGER SET. 9 (�- PRESSURE T/4,200-PSI.SET LINER TOP PACKER, RELEASE RUNNING TOOL. BLEED PSI&CHECK FLOATS(OK). 23:00 - 00:00 1.00 CASING P INT1 RIG DOWN CEMENT EQUIPMENT AND LAY DOWN BAKER CEMENTING HEAD. CIRCULATE AT 10-BPM AT 330-PSI. PUMPED 207-BBLS. PUMPED 10-BBL.OF 12.3-PPG SLUG. BLEW DOWN TOP DRIVE. 9/2/2011 00:00 - 04:30 4.50 CASING P INT1 POH LAYING DOWN 5"DP 1 X 1 TO PIPE SHED. 04:30 - 05:00 0.50 CASING P INT1 LAY DOWN BAKER 7"X 9-5/8"LINER RUNNING TOOL. 05:00 - 05:30 0.50 CASING P INT1 CLEAR AND CLEAN RIG FLOOR. 05:30 - 06:30 1.00 CASING N DFAL INT1 PJSM-RIG CREW AND SLB CREW-MIRU SWS E-LINE TOOLS AND EQUIPMENT. 06:30 - 08:00 1.50 EVAL N DFAL INT1 RIH WITH PDC CORRELATION LOG IN DEPTH CONTROL MODE ON E-LINE TO 5,400'. Printed 10/17/2011 1:40:46PM North . rica -ALASKA- BP Page 18 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:00 - 08:30 0.50 EVAL N DFAL INT1 WORK WIRE ATTEMPTING TO WORK TOOLS DEEPER. UNABLE TO GET DEEPER THAN 5,400'. POH WITH PDC TOOL STRING. 08:30 - 12:00 3.50 EVAL N DFAL INT1 RECONFIGURE PDC TOOL STRING WITH ADDITIONAL WEIGHT BARS AND ROLLER BAR ASSEMBLIES. RIH WITH PDC TOOL STRING IN DEPTH CONTROL MODE 12:00 - 20:30 8.50 EVAL N DFAL INT1 CONTINUE RIH WITH PDC TOOL STRING IN DEPTH CONTROL MODE TO 11,076'WLM. LOG UP IN PRIMARY DEPTH CONTROL MODE. MONITOR WELL FOR FLOW ON PIT#2. 20:30 - 21:00 0.50 EVAL N DFAL INT1 LAY DOWN PDC LOGGING TOOL STRING. RDMO SWS E-LINE TOOLS AND EQUIPMENT. CONSULTED WITH ANCHORAGE RIG TEAM AND ADVISED THAT GYRODATA UNABLE TO RUN TOOL STRING WITH ADDITIONAL WEIGHT BARS AND ROLLER STEM TO ACHIEVE DESIRED DEPTH. ADVISED ANCHORAGE RIG TEAM THAT RUNNING GYRODATA SURVEY IN DRILL PIPE WOULD DELIVER A HIGHER PROBABILITY OF SUCCESS. TEAM DECIDED TO RUN GYRODATA SURVEY IN DRILL PIPE WHEN PRODUCTION HOLE BHA RIH. 21:00 - 21:30 0.50 CASING P INT1 PICKUP AND BREAK DOWN BAKER CEMENT HEAD AND 5"DP SINGLE. MONITOR WELL 10 MINUTES. DRAIN BOP STACK. BLEW DOWN CHOKE AND KILL LINE. 21:30 - 22:00 0.50 CASING P INT1 PTSM-CREW CHANGE. PREPARE TO REPLACE ANNULAR PREVENTER ELEMENT. 22:00 - 00:00 2.00 BOPSUR P INT1 PJSM. CLOSE BLIND SHEAR RAMS. RIG DOWN FLOWLINE,FLOW NIPPLE AND HOLE FILL LINE. BREAK BOLTS ON ANNULAR CAP. REMOVE STRIP-O-MATIC. 9/3/2011 00:00 - 02:00 2.00 BOPSUR P INT1 CONTINUE REMOVING BOLTS FROM ANNULAR PREVENTER CAP. CHANGED OUT UPPER VBR'S FROM 4-1/2"X 7"RAMS TO 2-7/8"X 5-1/2"RAMS. RIGGED DOWN BX ELEVATORS. 02:00 - 05:30 3.50 BOPSUR P INT1 REPLACE ANNULAR PREVENTER SEALING ELEMENT. 05:30 - 16:00 10.50 BOPSUR N RREP INT1 PERFORM ANNUAL MAINTENANCE ON TOP DRIVE. CHANGE HYDRAULIC OIL,GEAR OIL, GEAR OIL PUMP AND CHECK CLEARANCES ON OIL PUMPS. SET STAND JUMP PRESSURE SETTINGS. INSTALL BAILS AND BX ELEVATORS. INSTALL SEAL AROUND FLOW BOX. PERFORMED FULL DERRICK INSPECTION. CLEAN UP TOOLS AND EQUIPMENT FROM ANNULAR ELEMENT REPLACEMENT. RELOCATE MAN CAMP TO PREFERRED LOCATION"B"PER EMOC-5082. MOVE TRUCK SHOP AND HOOK UP TO RIG POWER. INSTALL TRIPLE BOOT DRESSER SLEEVE ON MUD FLOWLINE,INSTALL GAS MONITORING SYTEM ON FLOWLINE. Printed 10/17/2011 1.40.46PM North erica -ALASKA- BP Page 19 of 34 Operation Summary Report Common Well Name: 18-12 'AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:00 - 19:00 3.00 BOPSUR P INT1 PULL WEAR BUSHING AND SET UPPER TEST PLUG.. FILL BOP STACK WITH FRESH WATER. CLOSE BLIND SHEAR RAMS AND P/T TEST PLUG TO 250-PSI LO/3,500-PSI HI FOR 5/5 CHARTED MINUTES. P/T UPPER 2-7/8"X 5-1/2"VBR'S AND ANNULAR PREVENTER WITH 4"TEST JOINT TO 250-PSI L0/3,500-PSI -HI FOR 5/5 CHARTED MINUTES. TEST CHART • ATTACHED TO OPEN WELLS MORNING REPORT. BLEW DOWN KILL AND CHOKE LINES. SET WEAR BUSHING. 19:00 - 20:00 1.00 CASING P INT1 PJSM-CASING PRESSURE TEST. ■- CIRCULATE LINES AND BOP STACK TO REMOVE AIR. 20:00 - 21:30 1.50 CASING P INT1 PRESSURE TEST 7"X 9-5/8"CASING TO 250-PSI LO/3,500-PSI HI FOR 5/30 CHARTED MINUTES. TEST FAILED. 21:30 - 22:00 0.50 CASING P INT1 CIRCULATE 50-BBLS.OF 10.2-PPG MUD THROUGH SURFACE EQUIPMENT. PRESSURE TESTED SURFACE LINES AND VALVES TO 3,500-PSI FOR 5.0 CHARTED MINUTES TO ELIMINATE SURFACE EQUIPMENT AS A POSSIBLE CAUSE FOR FAILED CASING TEST. GOOD TEST 22:00 - 23:00 1.00 CASING P INT1 PRESSURE TEST 7"X 9-5/8"CASING TO 250-PSI LO/3,500-PSI HI FOR 5/30 CHARTED MINUTES. TEST PASSED RIGGED DOWN TEST EQUIPMENT AND BLEW DOWN KILL LINE. 23:00 - 00:00 1.00 CASING P` INT1 SLIPPED AND CUT 88'OF DRILLING LINE. 9/4/2011 00:00 - 02:30 2.50 CASING P INT1 SLIP AND CUT 88'OF DRILLING LINE. INSPECT DRAWWORKS AND LOAD CELLS. CALIBRATE BLOCK HEIGHT. SET CROWN SAVER AND FLOOR SAVER LIMITS. 02:30 - 07:30 5.00 CASING P INT1 PULL WEAR BUSHING. SET TEST PLUG. RUN IN 4 LOCKDOWN SCREWS. R/U ON VA WITH HOLE FILL. CHANGED SLIP HANDLES, AND REMOVED GUIDE PLATES FOR HAND SLIPS. PICK UP MOUSEHOLE TO INSTALL IN ROTARY TABLE. TAKE MEASUREMENTS FOR MOUSEHOLE HANGER IN ROTARY TABLE. LAY DOWN MOUSEHOLE. RIG DOWN FILL LINE FROM VA. BACK OUT LOCKDOWN SCREWS AND PULL TEST PLUG. CHANGE SLIP HANDLES TO 5"HAND SLIPS. SET TEST PLUG AND RUN IN 4 LOCKDOWN SCREWS. RERIG FILL LINE TO VA. INSTALL 9-5/8"SLIP SEGMENTS IN PS-21 SLIP BODY. PICK UP AND SET MOUSEHOLE IN 9-5/8"SLIPS. 07:30 - 08:00 0.50 CASING P ■- INT1 F M. LAY DOWN HWDP AND DRILL PIPE FR OM DERRICK U SI NG MO USEHOLE. MONITOR HOLE FILL VIA TRIP TANK. 08:00 - 09:00 1.00 CASING N RREP INT1 REPAIR MASTER LINK FOR SKATE BACKSTOP ON LAY DOWN MACHINE. BRING SUBS FOR PRODUCTION HOLE BHA TO RIG FLOOR. MONITOR HOLE ON TRIP TANK. 09:00 - 09:30 0.50 CASING P INT1 SERVICE RIG. 09:30 - 12:00 2.50 CASING P ■- INT1 LAY DOWN S 5"DRILL. MONITOR FROM DERRICK FILL MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. Printed 10/17/2011 1.40:46PM North rica -ALASKA- BP Page 20 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 15:00 3.00 CASING P INT1 PTSM. CREW CHANGE. LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. 15:00 - 15:30 0.50 CASING N RREP INT1 TROUBLESHOOT AND REPAIR IRON DERRICKMAN. 15:30 - 16:00 0.50 CASING P INT1 LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. 16:00 - 16:30 0.50 CASING N RREP INT1 TROUBLESHOOT IRON DERRICKMAN. LUBRICATE AND INSPECT SAME. 16:30 - 17:00 0.50 CASING P INT1 LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. 17:00 - 17:30 0.50 CASING N RREP INT1 TROUBLESHOOT IRON DERRICKMAN. LUBRICATE AND INSPECT SAME. 17:30 - 18:00 0.50 CASING P INT1 LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. 18:00 - 18:30 0.50 CASING N RREP INT1 CONTINUE TROUBLESHOOTING IRON DERRICKMAN. 18:30 - 19:00 0.50 CASING P INT1 LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. 19:00 - 22:00 3.00 CASING N RREP INT1 CLEAN AND LUBRICATE IRON DERRICKMAN ROTATING ASSEMBLY. CHANGE OUT ENCODER CABLE. PRESSURE WASH ROTATING ASSEMBLY WHILE ROTATING. LUBRICATE ROTATING ASSEMBLY WITH WD40. 22:00 - 00:00 2.00 CASING P INT1 LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. 9/5/2011 00:00 - 01:30 1.50 CASING P INT1 LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. WEEKLY SAFETY MEETING-MOSES CREW FROM 00:15 TO 01:15 01:30 - 03:00 1.50 CASING P INT1 CHANGE OUT DIES ON ST-80C IRON ROUGHNECK. MONITOR HOLE AT TRIP TANK. 03:00 - 04:00 1.00 CASING N RREP INT1 SHUT DOWN OPERATIONS WHEN HYDRAULIC LEAK FOUND ON BOP DECK. REPORTED LEAK TO 5700, DS 18 OPERATOR AND INTERIM ROTARY DRILLING SUPERINTENDENT. IR-3936013 SUBMITTED FOR APPROVAL. LEAK REPAIRED AND HYDRAULIC OIL CLEANED UP WITH ABSORB. 04:00 - 04:30 0.50 CASING P INT1 SERVICE RIG. MONITOR HOLE FROM TRIP TANK. 04:30 - 08:00 3.50 CASING P INT1 LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. 08:00 - 11:00 3.00 CASING P INT1 CHNAGE OUT LOWER DIES IN ST-80C IRON ROUGHNECK. SWAP TOP DRIVE SAVER SUB FROM 4-1/2"IF TO 4"XT-39. 11:00 - 12:00 1.00 CASING P INT1 LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. Printed 10/17/2011 1:40:46PM North .rica -ALASKA- BP Page 21 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release: 9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 14:00 2.00 CASING P INT1 PTSM-CREW CHANGE. CONTINUE TO LAY DOWN 5"DRILL PIPE FROM DERRICK USING MOUSEHOLE. MONITOR HOLE FILL VIA TRIP TANK. PRESSURE TESTED 4"DART VALVE AND TWO 4"FOSV'S TO 250-PSI LO/3,500-PSI HI FOR 5/5 CHARTED MINUTES. WEEKLY HSE MEETING-HAYES CREW FROM 12:15 TO 13:15. 14:00 - 16:00 2.00 CASING P INT1 LAY DOWN MOUSEHOLE. PULL TEST PLUG AND SET 9-1/16"ID WEAR BUSHING. CHANGE BX ELEVATOR INSERTS FROM 5"TO 4". CHANGE PS-21 SLIP INSERTS FROM 5"TO 4". CHANGE OUT TOP DIES IN ST-80C IRON ROUGHNECK. CLEAR AND CLEAN RIG FLOOR. RIG DOWN HOLE FILL LINE FROM INNER ANNULUS. PJSM-PICKING UP 4" DRILL PIPE. 16:00 - 18:00 2.00 CASING P INT1 MAKE UP 4"JOHNNY WHACKER AND 4"HT-38 X 4"XT-39 B X P XO TO 1ST JOINT OF 4"XT-39 DRILL PIPE. START PICKING UP SINGLES OF 4"XT-39 DRILL PIPE FROM PIPE SHED. RIH WITH 39 SINGLES. 18:00 - 21:00 3.00 CASING P ■ INT1 RIH PICKING UP 4"XT-39 DOUBLES FROM PIPE SHED. RIH WITH 54 DOUBLES FROM PIPE SHED NB SIDE. 21:00 - 23:30 2.50 CASING P ® INT1 POH WITH 4"XT-39 DRILL PIPE STANDING BACK IN DERRICK. RECOVERED 49 STANDS. 23:30 - 00:00 0.50 CASING N RREP INT1 PJSM. REMOVE DAMAGED SPRING ON ODS DERRICK RACKING BOARD FINGER 2#10. 9/6/2011 00:00 - 03:00 3.00 CASING P INT1 POOH STANDING 4"DRILL PIPE IN DERRICK. 03:00 - 03:30 0.50 CASING P INT1 CLEAR AND CLEAN RIG FLOOR. 03:30 - 04:30 1.00 CASING P INT1 PREP RIG FLOOR TO MAKE UP 6-1/8" DRILLING BHA. MADE UP 4"FOSV TO SINGLE JOINT OF 4"XT-39 DP FOR SHEAR JOINT AND PLACED IN PIPE SHED. BROUGHT BHA COMPONENTS TO RIG FLOOR. 04:30 - 05:00 0.50 CASING P -_ INT1 PJSM-REVIEW MAKING UP BHA PROCEDURE. 05:00 - 08:30 3.50 CASING P -_ INT1 M/U 6-1/8"PRODUCTION HOLE BUILD SECTION DRILLING BHA. 08:30 - 11:00 2.50 CASING P -_ INT1 RIH WITH 4"HT-38 DRILLPIPE SINGLES TO 1,713'MD. 11:00 - 12:30 1.50 CASING P INT1 RIH WITH 4"XT-39 DP DOUBLES TO 2,947'MD. 12:30 - 13:00 0.50 CASING P -_ INT1 SERVICE RIG WHILE FIXING PIPE SKATE BACK STOP. 13:00 - 13:30 0.50 CASING P INT1 CONTINUE RIH WITH 4"XT-39 DP DOUBLES -_ TO 3,137'MD. 13:30 - 14:30 1.00 CASING N RREP - INT1 FIX PIPE SKATE BACK STOP. 14:30 - 00:00 9.50 CASING P INT1 CONTINUE RIH WITH 4"DRILLPIPE DOUBLES TO 12,069'MD.MONITOR HOLE ON TRIP TANK. P/U=200K,S/0=108K 9/7/2011 00:00 - 03:30 3.50 CASING P INT1 CONTINUE RIH WITH 4"DP DOUBLES FROM PIPESHED.TAG CEMENT STRINGERS AT 13,416'MD AND WASH DOWN.TAG HARD CEMENT AT 13,444'MD. Printed 10/17/2011 1:40.46PM North erica -ALASKA- BP Page 22 of 34 Operation Summary Report Common Well Name: 18-12 AFE No i Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date: 9/20/2011 X3-0106Y-C: (8,376,273.00) I • Project:Prudhoe Bay Site:PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(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 CASING P INT1 LINE UP AND DISPLACE WELL FROM 10.2-PPG TO 8.6-PPG QUIKDRIL-N MUD.PUMP AT 270 GPM. 06:00 - 06:30 0.50 CASING P INT1 AT 13,431'MD OBTAINED SLOW PUMP RATE ON PUMP#2 @ 20 SPM=585 PSI,30 SPM 825 PSI.SLOW PUMP RATE ON PUMP#1 NOT OBTAINED DUE TO MAINTENANCE BEING PERFORMED ON PUMP.WILL GET SLOW PUMP RATE PRIOR TO DRILLING SHOE TRACK.MONITOR WELL FOR 10 MINUTES- STATIC 06:30 - 07:30 1.00 CASING P INT1 PERFORM NEGATIVE PRESSURE TEST BY MONITORING IA PRESSURE VIA MARTIN DECKER RECORDER. UPPER PIPE RAMS CLOSED AND TIW VALVE ON DRILL PIPE CLOSED FOR DURATION OF TEST.NO PRESSURE BUILD UP FOR THE 30 MINUTE TEST,AND NO PRESSURE OR VOLUME BLED OFF AFTER OPENING THE KILL LINE. NOTIFIED WTL WITH THE RESULTS OF THE TEST AND WAS GRANTED APPROVAL TO PROCEDE WITH OPERATIONS. 07:30 - 11:00 3.50 CASING P INT1 R/U SLB E-LINE AND GYRODATA GYRO.M/U PUMP-IN SUB ON DRILLPIPE WITH E-LINE PACKOFF. 11:00 - 20:30 9.50 CASING P INT1 RIH WITH GYRO ON E-LINE TO 13,175'ELM -GYRO WENT TO BOTTOM WITHOUT THE NEED OF PUMPING -TAKE CONTINUOUS GYRO SURVEYS WHILE POOH AT 70 FPM. 20:30 - 21:30 1.00 CASING P INT1 UD GYRO AND R/D SLB E-LINE EQUIPMENT. SEND GYRO SURVEYS TO GYRODATA IN HOUSTON TO INTERPRET DATA. 21:30 - 22:00 0.50 CASING P INT1 RIH FROM 13,431'TO 13,444'AND TAG PLUG. OBTAIN SPRAT 13,431'MD,8,177'TVD #1 MP-20/30 SPM=600/840 PSI #2 MP-20/30 SPM=585/825 PSI MW 8.6 IN/8.6 OUT 22:00 - 23:00 1.00 CASING P INT1 PERFORM KICK WHILE DRILLING DRILL AND HOLD AAR.CAPTURE LESSONS LEARNED. 23:00 - 00:00 1.00 CASING P INT1 OBTAIN DRILLING PARAMETERS.BEGIN DRILLING SHOE TRACK F/13,444'-MD -PUW 188K,SOW 139K,ROT 159K -275 GPM,2040 PSI OFF,2220 PSI ON -45 RPM,7-8K TRQ,5-15K WOB 9/8/2011 00:00 - 03:00 3.00 CASING P INT1 CONTINUE DRILLING SHOE TRACK AND 20' OF NEW FORMATION. -CIRCULATE BOTTOMS UP 03:00 - 05:00 2.00 DRILL N DPRB PROD1 SHUT DOWN PUMPS AND MONITOR WELL -OBSERVE TRICKLE OF FLOW DOWN V' tfe FLOW-LINE,SHUT WELL IN -VERIFY WELL SHUT IN.WELL SECURE AT 03:20 HRS -MONITOR PRESSURES.SIDPP=0,SICP SLOWLY INCREASED TO 270 PSI. -TOTAL PIT GAIN 1 BBL -MW 8.6IN/8.6OUT -MAKE PROPER NOTIFICATIONS AND AGREE ON PLAN FORWARD Printed 10/17/2011 1:40:46PM North erica -ALASKA- BP Page 23 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual©56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 07:30 2.50 DRILL N DPRB PROD1 PROCEED TO CIRCULATE OUT INFLUX / THROUGH CHOKE USING THE DRILLER'S V METHOD. -BRING PUMPS UP TO 126 GPM(30 SPM) HOLDING CASING PRESSURE CONSTANT -CIRCULATE BOTTOMS UP HOLDING DRILLPIPE PRESSURE CONSTANT SHUT DOWN PUMPS HOLDING CASING PRESSURE CONSTANT,WELL SHUT-IN. -INITIAL SICP 150 PSI,FINAL SICP 345 PSI -DRILLPIPE PRESSURE DURING CIRCULATION 1270 PSI 07:30 - 16:30 9.00 DRILL N DPRB PROD1 CONSULT TOWN WHILE MONITORING PRESSURES AT 07:30 HRS, SICP 425 PSI,SIDPP 500 PSI AT 11:15 HRS,OPEN CHOKE AND BLEED 1/4 BBL-ALL GAS -SHUT IN WELL,ALLOW PRESSURES TO INCREASE,SICP 230 PSI,SIDPP 275 PSI AT 11:35 HRS,OPEN CHOKE AND BLEED 1/4 BBL-ALL GAS WITH A TRACE OF IMMEASURABLE AMOUNT OF FLUID -SHUT IN WELL,ALLOW PRESSURES TO INCREASE,SICP 218 PSI,SIDPP 250 PSI AT 12:10 HRS,OPEN CHOKE AND BLEED 1/4 BBL-ALL MUD -SHUT IN WELL,ALLOW PRESSURES TO INCREASE,SICP 202 PSI,SIDPP 220 PSI AT 12:45 HRS,OPEN CHOKE AND BLEED 1/4 BBL-ALL MUD -SHUT IN WELL,ALLOW PRESSURES TO INCREASE,SICP 193 PSI,SIDPP 195 PSI AT 14:05 HRS,OPEN CHOKE AND BLEED 1.25 BBLS-ALL MUD -SHUT IN WELL,ALLOW PRESSURES TO INCREASE,SICP 203 PSI,SIDPP 205 PSI WHILE MONITORING WELL,CHANGE MUD WEIGHT IN PITS AS PER ORDERS FROM TOWN. -WEIGHT UP MUD SYSTEM IN PITS TO 9.6 PPG -REDUCE MUD WEIGHT IN PITS TO 9.0 PPG Printed 10/17/2011 1:40.46PM North rica -ALASKA- BP Page 24 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:OOAM Rig Release: 9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(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 DRILL N DPRB PROD1 AT 16:45 HRS,OPEN CHOKE AND BEGIN 10 BBL BLEED BACK -TRACK TIME BETWEEN EVERY 1/4 BBL INCREMENT RETURNED -AVERAGE TIME BETWEEN 1/4 BBL INCREMENT FOR 1ST 8 BBLS=3 MIN 37 SEC AVERAGE TIME BETWEEN 1/4 BBL INCREMENTS FOR LAST 2 BBLS=4 MIN 57 SEC VISIBLE REDUCTION IN FLOW OBSERVED FOR LAST 2 BBLS -TOTAL TIME TO BLEED 10 BBLS=2 HRS 36 MIN 44 SEC SHUT IN WELL AT 19:24 HRS,ALLOW PRESSURES TO STABILIZE,SICP 90 PSI, SIDPP 115 PSI A CONSULT TOWN AND AGREE ON PLAN FORWARD. CONTINUE TO MONITOR WELL WHILE CONDITIONING MUD TO 8.6 PPG. 9/9/2011 00:00 - 04:00 4.00 DRILL N DPRB PROD1 MONITOR WELL WHILE CONDITIONING MUD -SICP 90 PSI, SIDPP 115 PSI -OFFLOAD 9.0 PPG MUD AND FILL PITS WITH 8.6 PPG MUD :1 04:00 - 06:30 2.50 DRILL P PROD1 OPEN CHOKE AND MONITOR WELL CBU THROUGH OPEN CHOKE AT 168 GPM/ 1300 PSI -CEMENT CONTAMINATED MUD RETURNS AT BOTTOMS UP 06:30 - 08:00 1.50 DRILL P PROD1 SHUT-IN WELL,CONSULT TOWN,AND ■ ALLOW PRESSURES TO STABILIZE -SICP 90 PSI,SIDPP 115 PSI 08:00 - 09:00 1.00 DRILL P PROD1 PERFORM FIT TO 11.0 PPG 13,539'MD,8,209'TVD -MW IN 8.6 PPG,MW OUT 8.6 PPG -EMW 11.0 PPG W/1000-PSI -4.8 BBLS PUMPED,3.5 BBLS RETURNED 09:00 09:30 0.50 DRILL P ■- PROD1 PRESSURES TO STABILIZE P C 95 PSI,SIDPP ALLOW p O 09:30 - 10:00 0.50 DRILL P PROD1 PERFORM 2ND FIT TO 10.9 PPG 13,539'MD,8,209'TVD -MW IN 8.6 PPG,MW OUT 8.6 PPG -EMW 10.9 PPG W/981-PSI -4.3 BBLS PUMPED,4.0 BBLS RETURNED 10:00 11:30 1.50 DRILL P ■- PROD1 SHUT-IN WELL AND ALLOW NSUL ING TOWN. TO STABILIZE WHILE CONSULTING TOWN. -SICP 100 PSI,SIDPP 0 PSI Printed 10/17/2011 1:40:46PM North .rica -ALASKA- BP Page 25 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI: 500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 18:00 6.50 DRILL P PROD1 WAIT ON ORDERS FROM TOWN. OPEN CHOKE AND BEGIN MONITORING BLEED BACK -TRACK TIME BETWEEN EVERY 1/4 BBL INCREMENT RETURNED -11.25 BBLS TOTAL BLED BACK -AVERAGE TIME BETWEEN 1/4 BBL INCREMENT FOR 1ST 5 BBLS=4 MIN 35 SEC -AVERAGE TIME BETWEEN 1/4 BBL INCREMENTS FOR LAST 6.25 BBLS=14 MIN 42 SEC -VISIBLE REDUCTION IN FLOW OBSERVED OVER BLEED BACK -TOTAL TIME TO BLEED 11.25 BBLS=5 HRS 54 MIN OBTAINED WTL APPROVAL TO PROCEED WITH OPERATIONS AND DRILL AHEAD 18:00 - 00:00 6.00 DRILL P PROD1 DRILL 6-1/8"PRODUCTION SECTION FROM 13559'MD TO 13653'MD -265 GPM,2425 PSI ON/2320 PSI OFF, -MW 8.7 IN/8.7 OUT, ECD=9.87 PPG -45 RPM,6-8K TQ -10K WOB P/U=191K,S/0= 148K, ROT=171K -AST=1.32,ART= 1.38,ADT=2.7 OBSERVED 1511 UNITS OF GAS ON FIRST BOTTOMS UP WHEN DRILLING AVG GAS 140 UNITS WHILE DRILLING NO LOSSES SPR'S @ 13440'MD,8226'TVD-MW=8.7 PPG,TIME=18:00 #1 MP-20/30 SPM=700/960 PSI #2 MP-20/30 SPM=700/960 PSI 9/10/2011 00:00 - 12:00 12.00 DRILL P PROD1 DRILL 6-1/8"PRODUCTION SECTION FROM 13,653'MD TO 13,937'MD -265 GPM,2695 PSI ON/2550 PSI OFF, -MW 8.7 IN/8.7 OUT, ECD=10.12 PPG -45 RPM,6-7K TQ -15K WOB -P/U= 183K,S/O= 138K, ROT=160K -AST=3.84,ART=3.95,ADT=7.79 MAX GAS 308 UNITS,73 UNITS BACKGROUND GAS NO LOSSES SPR'S @ 13937'MD,8522'TVD,MW=8.7 PPG #1 MP-20/30 SPM=880/1160PSI #2 MP-20/30 SPM=880/1160 PSI Printed 10/17/2011 1:40:46PM North 3rica -ALASKA- BP Page 26 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE (RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 00:00 12.00 DRILL P PROD1 DRILL 6-1/8"PRODUCTION SECTION FROM 13,937'MD TO BUILD SECTION T OF[� 1�4,318' MD -265 GPM,2700 PSI ON/2520 PSI OFF, -MW 8.7 IN/8.7 OUT, ECD=10.07 PPG -45 RPM,6-7K TQ -15K WOB -P/U=182K,S/O=138K,ROT=160K -AST=6.2,ART=0.71,ADT=6.91 AVG GAS 100 UNITS NO LOSSES SPR'S @ 14318'MD,8646'TVD,MW=8.7 PPG #1 MP-20/30 SPM=900/1180 PSI #2 MP-20/30 SPM=940/1200 PSI 9/11/2011 00:00 - 01:00 1.00 DRILL P PROD1 CIRCULATE OPEN HOLE VOLUME WHILE RECIPROCATING PIPE -269 GPM,2530 PSI -45 RPM,5-7K TQ P/U 182K,S/O 138K,ROT 160K MW 8.7 IN/8.7 OUT MONITOR WELL FOR 10 MIN 01:00 - 03:00 2.00 DRILL P PROD1 PUMP OUT OF HOLE WITH BHA TO SHOE, Y' P MPING AT 126 GPM 03:00 - 05:00 2.00 DRILL P PROD1 MONITOR WELL ON TRIP TANK,TRACKING BLEED BACK -TRACK TIME BETWEEN EVERY 1/4 BBL INCREMENT RETURNED -0.25 BBLS BACK IN 26 MIN -0.1 BBL BACK IN NEXT 1 HR 34 MIN 0.35 BBLS TOTAL BLED BACK OVER 2 HRS 05:00 - 06:00 1.00 DRILL P PROD1 PJSM.P/U RTTS PACKER,RIH W/1 STAND. -P/U WT.=190K,S/O WT.=140K SET RTTS PACKER AT 60'MD,UD RTTS RUNNING TOOL. TEST RTTS PACKER -250 PSI LOW FOR 5 MIN/1000 PSI HIGH FOR 10 MIN(GOOD TEST) Printed 10/17/2011 1.40:46PM North irica ALASKA BP Page 27 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum:18-12C Actual @56.29ft(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 BOPSUR P PROD1 TEST BOPE TO 250 PSI LOW,3500 PSI HIGH AS PER AOGCC AND BP POLICY.TEST ANNULAR PREVENTER TO 250 PSI LOW,3500 PSI HIGH. EACH TEST 5 CHARTED MINUTES. TEST THE UPPER VARIABLES AND LOWER VARIABLES WITH 2-7/8 IN AND 4-1/2 IN TEST JOINTS.TEST THE ANNULAR PREVENTER WITH 2-7/8 IN TEST JOINT.NO FAILED TESTS. TEST WITNESS WAIVED BY BOB NOBLE WITH AOGCC.TEST WITNESSED BY WSL f2 RICK DOLFI AND TOOLPUSHER SAM DYE. �/�� PERFORMED ACCUMULATOR TEST:SYSTEM 7 / PRESSURE 3,050 PSI,PRESSURE AFTER CLOSING ALL RAMS AND ANNULAR PREVENTER 1,800 PSI.RECOVERED 1ST 200 PSI-35 SECONDS. FULL RECOVERY 127 SEC WITH 2 ELECTRIC AND 2 AIR PUMPS.6 NITROGEN BOTTLES,AVERAGE PRESSURE= 2,200-PSI. CLOSING TIMES -ANNULAR=22 SECONDS -UPPER VBR=19 SECONDS -BLIND/SHEARS= 18 SECONDS -LOWER VBR= 17 SECONDS -CHOKE HCR=2 SECONDS -KILL HCR=2 SECONDS 14:00 - 16:00 2.00 DRILL P PROD1 M/U RTTS RUNNING TOOL AND RIH.M/U / FOSV AND RETRIEVE RTTS AS PER HES REP t/ W/ANNULAR CLOSED. NO PRESSURE UNDER STORM PACKER. 16:00 - 16:30 0.50 DRILL P PROD1 SERVICE TOP DRIVE 16:30 - 17:00 0.50 DRILL P PROD1 RIH FROM 13,450'TO 14,223'.MONITOR HOLE ON TRIP TANK. 17:00 - 19:00 2.00 DRILL P PROD1 M/U TOP DRIVE, BREAK CIRC AND WASH LAST STAND DOWN TO 14,318'. CIRCULATE BOTTOMS UP WHILE RECIPROCATING PIPE -275 GPM,2650 PSI -45 RPM,5-6K TQ -P/U 180K,S/0 140K, ROT 160K MW 8.7 IN/8.7 OUT MONITOR WELL FOR 10 MIN 19:00 - 21:30 2.50 DRILL P PROD1 PUMP OUT OF HOLE WITH BHA TO SHOE, PUMPING AT 147 GPM 21:30 - 22:00 0.50 DRILL P PROD1 MONITOR WELL FOR 10 MIN-STATIC -STRAP ROW OF PIPE IN DERRICK -PUMP DRY JOB -DROP 2.375"DRIFT 22:00 - 00:00 2.00 DRILL P PROD1 POOH ON ELEVATORS FROM 13,526'TO 12,005'. -STRAP PIPE ON TRIP OUT OF HOLE -HOLE TAKING CALC DISPLACEMENT SPR'S @ 13526'MD,8196'TVD,MW=8.7 PPG, TIME 22:00 HRS #1 MP-20/30 SPM=800/1080 PSI #2 MP-20/30 SPM=780/1060 PSI Printed 10/17/2011 1.40.46PM North mica -ALASKA- BP Page 28 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/9/2011 End Date: 9/20/2011 X3-0106Y-C: (8,376,273.00) Project Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/12/2011 00:00 - 09:00 9.00 DRILL P PROD1 POOH ON ELEVATORS FROM 12,004'TO 4,496'MD. -STRAP PIPE ON TRIP OUT OF HOLE. -HOLE TAKING CALC DISPLACEMENT. 09:00 - 15:00 6.00 DRILL P PROD1 PJSM. HANG BLOCKS,CUT&SLIP 1130'OF DRILLING LINE. -UN-HANG BLOCKS AND CALIBRATE DRAWWORKS. -MONITOR WELL ON TRIP TANK,STATIC. 15:00 - 19:30 4.50 DRILL P PROD1 CONTINUE POOH ON ELEVATORS FROM 4,496'MD TO 509'MD. -STRAP PIPE ON TRIP OUT. -MONITOR WELL ON TRIP TANK,WELL TAKING CALC DISPLACEMENT. -MONITOR WELL AT BHA FOR 10 MIN- STATIC 19:30 - 00:00 4.50 DRILL P PROD1 PJSM. L/D DRILLING BHA -CHANGE OUT SLIP INSERTS -RETRIEVE STEEL RABBIT AT JARS -L/D 4"HWDP,4-3/4"JARS,AND FLEX COLLARS. -PJSM FOR SOURCE HANDLING. L/D PULSER COLLAR, BAT COLLAR.REMOVE AND CONTAIN SOURCE.L/D ALD/CTN COLLAR. L/D REMAINDER OF BHA. BIT GRADE: 1-2-LT-G-E-3-BT-TD NO ABNORMAL WEAR,OR VISUAL DAMAGE NOTED. 9/13/2011 00.00 - 02:00 2.00 EVAL P PROD1 PJSM. M/U MDT LOGGING BHA PER SLB , REPS.ATTACH PUMP DOWN WET CONNECT (PDWC)TO DOWN HOLE WET CONNECT (DHWC)AND CHECK TOOLS-GOOD TEST -DISCONNECT PUMP DOWN HEAD 02:00 - 15:00 13.00 EVAL P PROD1 INSTALL PS-21 POWER SLIPS AND RIH WITH MDT LOGGING BHA ON 4"DRILLPIPE TO 13199'MD. -8155'MD,2 BPM,380 PSI, P/U= 128K, S/O= 109K -10530'MD,2 BPM,510 PSI, P/U= 148K, S/O= 119K -MONITOR HOLE ON TRIP TANK. -FILL PIPE EVERY 20 STANDS 15:00 - 17:00 2.00 EVAL P PROD1 CIRC BOTTOM UP WHILE R/U SLB WIRE LINE SHEAVE -13199'MD,4 BPM,860 PSI, P/U= 170K, S/O= 130K -MAX GAS=772 UNITS CONDUCTED AN UN-ANNOUNCED WELL CONTROL DRILL WHILE BREAKING CIRCULATION WITH ALAN MADSON AND SAM DYE -CREW RESPONSE=90 SECONDS -CONDUCTED AFTER ACTION REVIEW GAS CUT MUD AT B/U 7.8 PPG ON REG SCALE,NO INCREASE IN FLOW,NO PIT GAINS,SHUT DOWN FLOW CHECK,WELL STATIC. 17:00 - 17:30 0.50 EVAL P PROD1 MAKE UP SIDE ENTRY SUB AND PDWC LOGGING TOOL Printed 10/17/2011 1.40:46PM North )pica -ALASKA- BP Page 29 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date: 9/20/2011 X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:30 - 19:30 2.00 EVAL P PROD1 RIH WITH WIRELINE TOOL FROM SURFACE TO 12395'MD. ESTABLISH CIRC,PUMP PDWC WIRELINE TOOL DOWN TO DHWC -4 BPM,1000 PSI -CONFIRM LATCH UP AND INSTALL WIRELINE ANCHOR SPR'S @ 13167'MD,7892'TVD,MW=8.7 PPG, TIME 19:00 HRS #1 MP-20/30 SPM=680/860 PSI #2 MP-20/30 SPM=680/840 PSI 19:30 - 20:30 1.00 EVAL P PROD1 RIH FROM 13294'MD TO 13538'MD -MONITOR HOLE ON TRIP TANK 20:30 - 00:00 3.50 EVAL P PROD1 BEGIN GATHERING PRESSURE SAMPLES FROM 13538'MD TO 13800'MD -8.7 PPG MUD WT,MONITOR HOLE ON TRIP TANK -P/U=195K, S/O=140K,MAINTAINING 1.5K LB LINE TENSION PRESSURE SAMPLES AT THE FOLLOWING MEASURED DEPTHS: -13606'MD,8210'TVDSS,ZONE 4B -13630'MD,8230'TVDSS,ZONE 4B -13657'MD,8252'TVDSS,ZONE 4A -13672'MD,8264'TVDSS,ZONE 4A -13686'MD,8275'TVDSS,ZONE 4A -13712'MD,8296'TVDSS,ZONE 3 -13733'MD,8312'TVDSS,ZONE 3 -13761'MD,8334'TVDSS,ZONE 3 -13778'MD,8348'TVDSS,ZONE 3 -13796'MD,8362'TVDSS,ZONE 2C 9/14/2011 00:00 - 04:00 4.00 EVAL P PROW GATHER PRESSURE SAMPLES FROM 13800' MD TO 14300'MD -8.7 PPG MUD WT,MONITOR HOLE ON TRIP TANK PRESSURE SAMPLES AT THE FOLLOWING MEASURED DEPTHS: -13807'MD,8371'TVDSS,ZONE 2C -13829'MD,8388'TVDSS,ZONE 2C -13858'MD,8410'TVDSS,ZONE 2C -13969'MD,8486'TVDSS,ZONE 2A -13992'MD,8500'TVDSS,ZONE 2A -14017'MD,8514'TVDSS,ZONE 1B -14066'MD,8538'TVDSS,ZONE 1B -14081'MD,8544'TVDSS,ZONE 1B -14122'MD,8558'TVDSS,ZONE 1B -14183'MD,8574'TVDSS,ZONE 1B -14215'MD,8580'TVDSS,ZONE 1B -14265'MD,8586'TVDSS,ZONE 1A -14300'MD,8589'TVDSS,ZONE 1A 04:00 - 14:00 10.00 EVAL P PROD1 POOH TAKING FLUID SAMPLES AT -13858'MD,8410'TVDSS,ZONE 2C -13778'MD,8348'TVDSS,ZONE 3 -13686'MD,8275'TVDSS,ZONE 4A • MONITOR HOLE ON TRIP TANK. 14:00 - 15:00 1.00 EVAL P PROD1 POOH FROM 13,686'MD TO 13,214'MD. -MONITOR DISPLACEMENT ON HOLE FILL. Printed 10/17/2011 1:40.46PM North ?rica -ALASKA - BP Page 30 of 34 Operation Summary Report Common Well Name: 18-12 1 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 18:00 3.00 EVAL P PROD1 REMOVE CABLE CLAMP FROM SDES AND UNLATCH MDT TOOL WITH 5K-LBS OVERPULL ON E-LINE. -CONTINUE TO POOH WITH MDT TOOL ON E-LINE TO SDES. -L/D SDES WITH PUMP DOWN WET CONNECT&CROSSOVERS. 18:00 - 19:30 1.50 EVAL P PROD1 "'BREAK CIRC&CBU @ 13,190'MD, -4-BPM,815-PSI -PUMP 20-BBL DRY JOB,10.4 PPG. -SIM-OPS R/D WIRELINE SHEAVES. -MAX GAS AT B.U.=120-UNITS. SPR'S @ 13190'MD,7912'TVD,MW=8.7+ PPG,TIME 19:15 HRS #1 MP-20/30 SPM=620/740 PSI #2 MP-20/30 SPM=600/740 PSI 19:30 - 20:00 0.50 EVAL P PROD1 MONITOR WELL,STATIC. -PUMP 10.4 PPG DRY JOB 20:00 - 00:00 4.00 EVAL P PROD1 POOH ON ELEVATORS FROM 13,190'MD TO 5,780'MD. -MONITOR WELL ON TRIP TANK,WELL TAKING CALCULATED FILL. 9/15/2011 00:00 - 04:00 4.00 EVAL P PROD1 -POOH FROM 5,780'TO SURFACE WITH MDT LOGGING TOOLS. -MONITOR HOLE ON TRIP TANK -MONITOR WELL 10 MIN PRIOR TO PULLING BHA,STATIC 04:00 - 05:00 1.00 EVAL P - PROD1 PJSM.L/D MDT LOGGING TOOLS PER SLB REPS.CLEAN AND CLEAR RIG FLOOR 05:00 - 07:30 2.50 DRILL P PROD1 PJSM.MAKE UP 6-1/8"ROTARY STEERABLE DRILLING BHA. -PICK UP BIT AND TM COLLAR UP BEAVER SLIDE -CHANGE OUT SLIP INSERTS -MAKE UP GEO-PILOT BHA AS PER DD RIH TO 148'MD, MONITORING HOLE ON TRIP TANK. 07:30 08:00 0.50 DRILL P ■- PROD1 TOP DRIVE TO BHA D AND PRESSURE RE TEST GEO-SKID TO 3500 PSI, GOOD TEST. 08:00 - 09:00 1.00 DRILL P -_ PROD1 UPLOAD MWD AND SHALLOW PULSE TEST -275 GPM,880 PSI 09:00 - 09:30 0.50 DRILL P - PROD1 PJSM.LOAD SOURCES IN BHA AS PER SPERRY REP. 09:30 - 10:30 1.00 DRILL P PROD1 PICK UP REMAINING BHA FROM 148'MD TO 409'MD. -INSTALL CORROSION RING ON TOP JOINT OF NON-MAG FLEX COLLAR -MONITOR HOLE ON TRIP TANK 10:30 - 22:00 11.50 DRILL P PROD1 INTALL SLIP DIES AND RIH WITH STANDS FROM 409'MD TO 13703'MD -P/U=68K,S/0=71K -FILL PIPE AND STAGE ROTATION FROM 5 RPM TO WORK IN GEO-PILOT SEALS EVERY 20 STD'S -BREAK CIRC AT 275 GPM,1080 PSI -COMMAND DOWNLINK GOOD -MONITOR HOLE ON TRIP TANK Printed 10/17/2011 1.40:46PM North ;rica -ALASKA- BP Page 31 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE (RON) Start Date: 8/9/2011 End Date:9/20/2011 'X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:00 - 22:30 0.50 DRILL P PROD1 ESTABLISH BASELINE CLEAN HOLE ECD -275 GPM,2120 PSI -140 RPM,4-5 TQ 22:30 - 23:00 0.50 DRILL P PROD1 RIH FROM 13703'TO 13796' P/U=190K,S/O=148K 23:00 - 00:00 1.00 DRILL P PROD1 ENCOUNTER TIGHT HOLE AT 13796'MD WASH AND REAM FROM 13796'TO 13902' P/U=190K,S/O=150K, RT=160K -20 RPM,5-7K TQ 84 GPM,730 PSI 9/16/2011 00:00 - 06:00 6.00 DRILL P PROD1 CONTINUE TO WASH AND REAM DOWN THROUGH TIGHT HOLE TO BOTTOM,14318' MD. -MAX GAS AT FIRST BOTTOMS UP= 1630 UNITS 06:00 - 08:00 2.00 DRILL P PROD1 DRILL 6-1/8"PRODUCTION LATERAL,FROM 14,318'MD TO 14,469'MD -260 GPM,2120 PSI ON/2100 PSI OFF, -MW 8.7 IN/8.7 OUT,ECD=10.05 PPG 100 RPM,6-7K TQ OFF,6-8 TQ ON 10-15K WOB P/U=200K,S/0=150K,ROT=177K MAX GAS 694 UNITS,150 UNITS BACKGROUND GAS NO LOSSES SPR'S @ 14462'MD,8648'TVD,MW=8.8 PPG, TIME 08:00 HRS #1 MP-20/30 SPM=840/1060 PSI #2 MP-20/30 SPM=800/1060 PSI 08:00 - 09:30 1.50 DRILL N HMAN PROD1 CIRC BOTTOMS UP WHILE ROTATING AND RECIPROCATING -270 GPM,2200 PSI -40 RPM,6-7K TQ MAX GAS DURING CIRCULATION 909 UNITS. MONITOR WELL FOR 10 MIN-STATIC 09:30 - 11:30 2.00 DRILL N HMAN PROD1 PUMP OUT OF HOLE TO SHOE FROM 14374' TO 13423' -3 BPM,950 PSI -P/U=186K,S/0=150K MONITOR WELL FOR 10 MIN-STATIC 11:30 - 20:00 8.50 DRILL N HMAN PROD1 PUMP DRY JOB AND POOH ON ELEVATORS FROM 13,423'TO SURFACE WITH DRILLING BHA. -MONITOR HOLE ON TRIP TANK -HELD KICK WHILE TRIPPING DRILL AND AAR WHILE POOH. -MONITOR WELL 10 MIN PRIOR TO PULLING BHA,STATIC 20:00 - 00:00 4.00 DRILL N HMAN PROD1 PJSM.UD ROTARY STEERABLE DRILLING BHA -S/B 4"HWDP,4-3/4"JARS,AND UD FLEX COLLARS. -PJSM FOR SOURCE HANDLING.UD PULSER COLLAR,REMOVE AND CONTAIN SOURCE. UD ALD/CTN COLLAR.UD REMAINDER OF BHA. BIT GRADE:0-0-WT-A-X-I-NO-BHA NO ABNORMAL WEAR,OR VISUAL DAMAGE NOTED. Printed 10/17/2011 1:40:46PM North .rica -ALASKA - BP Page 32 of 34 Operation Summary Report Common Well Name 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project: Prudhoe Bay Site:PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/17/2011 00:00 - 01:00 1.00 DRILL N HMAN - PROD1 MAKE UP 6-1/8"ROTARY STEERABLE PRODUCTION LATERAL BHA -MAKE UP GEO-PILOT BHA AS PER DD 01:00 - 02:00 1.00 DRILL N HMAN - PROD1 UPLOAD MWD 02:00 - 02:30 0.50 DRILL N HMAN _ PROD1 CONTINUE M/U BHA AS PER DD FROM 115' TO 149' 02:30 - 03:00 0.50 DRILL N HMAN PROD1 -SHALLOW PULSE TEST MWD -275 GPM,850 PSI 03:00 - 03:30 0.50 DRILL N HMAN PROD1 PJSM. LOAD SOURCES IN BHA AS PER SPERRY REP. 03:30 - 04:30 1.00 DRILL N HMAN PROD1 PICK UP REMAINING BHA FROM 149'MD TO 410'MD. -INSTALL CORROSION RING ON TOP JOINT OF NON-MAG FLEX COLLAR -MONITOR HOLE ON TRIP TANK 04:30 - 05:00 0.50 DRILL N HMAN PROD1 CHANGE OUT PS-21 SLIP INSERTS TO POWER SLIPS. 05:00 - 15:00 10.00 DRILL N HMAN PROD1 RIH ON ELEVATORS FROM 410'TO 13,573'. -FILL PIPE EVERY 20 STANDS -MONITOR WELL ON TRIP TANK 15:00 - 15:30 0.50 DRILL N HMAN PROD1 '__SERVICE RIG AT SHOE -GREASE CROWN AND TOP DRIVE, INSPECT SAVER SUB -OBTAIN PWD CLEAN HOLE ECD BASELINE (10.02 PPG)AT 275 GPM/2100 PSI,120 RPM/ 4-5K TQ -P/U WT=185K,S/0 WT=143K,ROT WT= 150K 15:30 - 16:30 1.00 DRILL N HMAN PROD1 CONTINUE RIH FROM 13,573'TO 14,379' _ -RIH CLEAN THROUGH BUILD SECTION 16:30 - 17:30 1.00 DRILL N. HMAN PROD1 BREAK CIRC AND WASH DOWN FROM 14,379' TO 14,469'AT 275 GPM/2230 PSI -OBTAIN SPR AND CBU -MAX GAS AT BOTTOMS UP 670 UNITS SPR'S @ 14463'MD,8647'TVD,MW=8.8 PPG, TIME 16:30 HRS #1 MP-20/30 SPM=820/1060 PSI #2 MP-20/30 SPM=800/1060 PSI 17:30 - 00:00 6.50 DRILL P PROD1 DRILL 6-1/8"PRODUCTION LATERAL FROM 14,469'MD TO 14,925'MD -275 GPM,2410 PSI ON/2375 PSI OFF, -MW 8.8 IN/8.8 OUT,ECD=10.3 PPG -140 RPM,6-7K TQ OFF,8-9 TQ ON -12K WOB -P/U=195K,S/O=147K,ROT=170K MAX GAS 1221 UNITS,225 UNITS BACKGROUND GAS NO LOSSES Printed 10/17/2011 1.40.46PM North ;rica - ALASKA,- BP Page 33 of 34 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C: (8,376,273.00) Project:Prudhoe Bay Site:PB DS 18 Rig Name/No.: DOYON 25 Spud Datelrime: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/18/2011 00:00 - 12:00 12.00 DRILL P PROD1 CONTINUE DRILLING 6-1/8"PRODUCTION LATERAL FROM 14,925'MD TO 15,990'MD- GEOSTEERING AS DIRECTED -275 GPM,2470 PSI ON -MW 8.8 IN/8.8 OUT,ECD=10.47 PPG -140 RPM,10K TQ ON,7-8K TQ OFF -5KWOB -P/U=196K,S/0=146K,ROT=166K 225 UNITS BACKGROUND GAS NO LOSSES SPR'S @ 14945'MD,8648'TVD,MW=8.8 PPG, TIME 00:15 HRS #1 MP-20/30 SPM=930/1140 PSI #2 MP-20/30 SPM=920/1140 PSI SPR'S @ 15420'MD,8635'TVD,MW=8.9 PPG, TIME 05:30 HRS #1 MP-20/30 SPM=900/1100 PSI #2 MP-20/30 SPM=900/1100 PSI 12:00 - 00:00 12.00 DRILL P PROD1 DRILL 6-1/8"PRODUCTION LATERAL FROM 15,990'MD TO 16,903'MD-GEOSTEERING AS DIRECTED 275 GPM,2640 PSI ON,2360 PSI OFF MW 8.8 IN/8.8 OUT,ECD=10.47 PPG -140 RPM,9-10K TQ ON,7-8K TQ OFF -5-12K WOB -P/U=198K,S/O=146K,ROT=167K MAX GAS 1094 UNITS,225 UNITS BACKGROUND GAS NO LOSSES SPR'S @ 15990'MD,8621'TVD,MW=8.9 PPG, TIME 12:00 HRS #1 MP-20/30 SPM=800/1020 PSI #2 MP-20/30 SPM=800/1020 PSI SPR'S @ 16465'MD,8617'TVD,MW=8.8 PPG, TIME 18:30 HRS #1 MP-20/30 SPM=880/1100 PSI #2 MP-20/30 SPM=880/1140 PSI 9/19/2011 00:00 - 03:00 3.00 DRILL P PROD1 DRILL 6-1/8"LATERAL PRODUCTION SECTION FROM 16.903'MD TO TD OF 17.080'MD(8597' TVD)-CALLED TD SHORT DUE TO GEOLOGY -261 GPM,2370 PSI ON,2230 PSI OFF -MW 8.8 IN/8.9 OUT,ECD=10.28 PPG -140 RPM,9-10K TQ ON,7-8K TQ OFF ` 0) -7KWOB -P/U=200K,S/O=146K,ROT=166K MAX GAS 1308 UNITS,225 UNITS BACKGROUND GAS NO LOSSES SPR'S @ 17035'MD,8596'TVD,MW=8.9 PPG, TIME 02:00 HRS #1 MP-20/30 SPM=820/1020 PSI #2 MP-20/30 SPM=820/1020 PSI Printed 10/17/2011 1:40:46PM North :rica -ALASKA- BP Page 34 of 34 Operation Summary Report Common Well Name. 18-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/9/2011 End Date:9/20/2011 X3-0106Y-C:(8,376,273.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 04:00 1.00 DRILL P PROD1 CIRCULATE BOTTOMS UP WHILE ROTATING AND RECIPROCATING AT TD. -260 GPM,2310 PSI -140 RPM,5K TQ -MW 8.7IN/8.8 OUT MONITOR WELL FOR 10 MIN-STATIC 04:00 - 16:30 12.50 DRILL P PROD1 BACKREAM OUT OF HOLE FROM 17,080'MD TO 13,615'MD -275 GPM,2380 PSI 140 RPM,5-6K TQ -P/U=190K, S/O=152K,ROT=160K -MW 8.7 IN/8.7 OUT WORK THROUGH TIGHT SPOT FROM 16,025' MD TO 16,000'MD NO ROTATION FROM 14420'MD TO 14048'MD 16:30 - 19:00 2.50 DRILL P PROD1 DROP BALL TO OPEN-WELL COMMANDER CIRC SUB -PUMP DOWN AT 84 GPM,600 PSI -PRESSURE UP TO 2350 PSI TO OPEN CIRC 2.5 X B/U WHILE ROTATING AND RECIPROCATING FROM 13615'MD TO 13523' MD. -420 GPM,1920 PSI -140 RPM,4-5K TQ -MW 8.7IN/8.7OUT PULL UP INTO SHOE SPR'S @ 13602'MD,8263'TVD,MW=8.7+ PPG,TIME 17:15 HRS #1 MP-20/30 SPM=480/600 PSI #2 MP-20/30 SPM=480/620 PSI 19:00 - 19:30 0.50 DRILL P PROD1 MONITOR WELL FOR 10 MIN-STATIC. FUNCTION TEST ANNULAR,UPPER AND LOWER PIPE RAMS. PUMP DRY JOB,BLOW DOWN TOPDRIVE AND GEO SPAN. 19:30 - 21:00 1.50 DRILL P PROD1 PJSM AND HAZARD RECOGNITION WITH DD. RIG DOWN GEO SPAN UNIT,CLEAN AND CLEAR WORK AREA. 21:00 - 21:30 0.50 DRILL P PROD1 HELD AAR ON RIG DOWN OF GEO SPAN 21:30 - 00:00 2.50 DRILL P PROD1 POOH ON ELEVATORS STANDING BACK 4" DP FROM 13523'MD TO 8963' MONITOR WELL ON TRIP TANK 9/20/2011 00:00 - 03:30 3.50 DRILL P PROD1 POOH ON ELEVATORS STANDING BACK 4" XT-39 DP FROM 8963'MD TO 1785'MD. MONITOR WELL ON TRIP TANK 03:30 - 05:00 1.50 DRILL P PROD1 POOH ON ELEVATORS LAYING DOWN 4" HT-38 DP SINGLES TO PIPE SHED FROM 1785' MD TO BHA. 05:00 - 08:00 3.00 DRILL P PROD1 MONITOR WELL. CHANGED OUT SLIP INSERTS. LAY DOWN BHA#7 AS PER DIRECTIONAL DRILLER. PJSM WITH RIG CREW TO REVIEW HANDLING NUCLEAR SOURCES. HALLIBURTON MWD PERSONNEL REMOVED AND HANDLED NUKE SOURCES. 08:00 - 08:30 0.50 DRILL P PROD1 CLEAR AND CLEAN RIG FLOOR. Printed 10/17/2011 1:40:45PM North America -ALASKA- BP Page 1 of 6 Operation Summary Report Common Well Name: 18-12 AFE No Event Type:COM-ONSHORE(CON) Start Date:9/20/2011 End Date: 9/27/2011 X3-0106Y-C: (2,603,728.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual©56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/20/2011 08:30 - 10:30 2.00 CASING P -_ RUNPRD RIG UP 4-1/2"PRODUCTION LINER HANDLING TOOLS. 10:30 - 18:00 7.50 CASING P RUNPRD MAKE UP 4-1/2"12.6#, L-80 BTC PRODUCTION LINER SHOE TRACK.TORQUED CONNECTIONS TO THE MARK. BAKER LOK'D ALL CONNECTION BELOW LANDING COLLAR JOINT. CONTINUED RIH WITH 4-1/2"12.6#, L-80 TCII PRODUCTION LINER TUBING. TORQUE TURNED ALL TCII CONECTION TO 3850 FT-LBS.OPTIMUM TORQUE. USED JET LUBE SEAL GUARD THREAD COMPOUND. RAN TWO OMD HYDROFORM CENTRALIZERS AND STOP RINGS.PER JOINT. RAN 85 JTS. TCII PLUS 3 JOINTS IN SHOE TRACK. FILLED EVERY JOINT AND TOPPED OFF EVERY 10TH JOINT RIH. MONITORED HOLE FILL VIA PIT #3. 18:00 - 19:00 1.00 CASING P RUNPRD MAKE UP BAKER 7"X 4-1/2"FLEX LOCK LINER HANGER AND LINER TOP PACKER. MIX AND ADD PAL MIX. MAKE UP 1 STAND 4"DRILL PIPE,SCREW IN WITH TOP DRIVE AND RIH WITH LINER TOP PACKER PAST WELLHEAD AT—40'. 19:00 - 20:30 1.50 _ CASING P ® RUNPRD CIRCULATED TWO LINER VOLUMES (128-BBLS.=1640 STKS.)AT 3.0-BPM AT 110-PSI. 20:30 - 00:00 3.50 CASING P RUNPRD RIH WITH 4-1/2"PRODUCTION LINER ON 4" DRILL PIPE FROM DERRICK FROM 3,699'TO 7,500'. P/U WT.=102K,S/O WT.=96K FILL PIPE EVERY 10 STANDS PLUS 200 STROKES AT 3.0-BPM AT 130-PSI. MONITOR WELL VIA PITS#3 AND#4. 9/21/2011 00:00 - 02:30 2.50 CASING P RUNPRD RIH WITH 4-1/2"PRODUCTION LINER ON4" DRILL PIPE FROM DERRICK. 02:30 - 03:00 0.50 CASING N `. RREP 1,302.00 RUNPRD IRON DERRICKMAN MALFUNCTION. CALLED OUT WEATHERFORD TECHNICIAN AND RIG ELECTRICIAN TO TROUBLESHOOT AND REPAIR. 03:00 - 03:30 0.50 CASING P -_ RUNPRD SERVICE RIG-GREASE BLOCKS AND TOP DRIVE. 03:30 - 06:30 3.00 CASING P RUNPRD RIH WITH 4-1/2"PRODUCTION LINER ON 4" DRILL PIPE FROM DERRICK. 06:30 - 08:00 1.50 CASING P 13,486.00 RUNPRD CIRCULATE 2900 STKS.©4.0-BPM AND 730-PSI. -OBTAIN SPR'S: -#1  PUMPS 20/30 SPM-460/590 PSI. MAKE UP CEMENT HEAD AND SINGLE JT.4" DP AND STAGE ON PIPE SKATE. 08:00 - 11:00 3.00 CASING P 17,080.00 RUNPRD RIH WITH 4-1/2"PRODUCTION LINER ON 4" DRILL PIPE FROM 13,456'TO 17,080'. FILL PIPE EVERY 10 STANDS. MONITOR HOLE FILL VIA PITS#3 AND#4. NO ISSUES RUNNING IN HOLE. Printed 10/17/2011 1:41:06PM North ;rica -ALASKA- BP Page 2 of 6 Operation Summary Report Common Well Name: 18-12 AFE No Event Type: COM-ONSHORE(CON) Start Date: 9/20/2011 End Date: 9/27/2011 X3-0106Y-C: (2,603,728.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:00 - 15:00 4.00 CEMT P 17,080.00 RUNPRD RIG UP CEMENT EQUIPMENT. CIRCULATE @ 2.0-BPM @ 740-PSI. CIRCULATE HOLE STAGING PUMPS UP TO 5.0-BPM @ 1,400-PSI. CIRCULATED 746- -BBLS. RECIPROCATED PIPE. PJSM CEMENT JOB WITH WSL,DOYON CREW, BARIOD MUD ENGINEER,SLB CEMENTERS AND BAKER REP. DISCUSSED WELL CONTROL, RIG SAFETY, HIGH PRESSURE PUMPING AND RIG EVAC. START BATCHING CEMENT AT 14:10-HRS.CEMENT TO WEIGHT AT 14:40-HRS.P/U WT.=205K,S/O WT.= 148K 15:00 - 16:30 1.50 CEMT P RUNPRD SWAP CEMENT UNIT. -PUMP 25.0-BBLS. 11.5-PPG MUD PUSH II N -PRESSURE TEST LINES TO 4,800-PSI. -PUMP 95-BBLS. (440 SX.)OF 15.8-PPG CLASS 1k° "G"CEMENT @ 6.0-BPM @ 1,300-PSI -CEMENT YIELD-1.17 FT3/SK -SWAP TO RIG PUMP TO DISPLACE CEMENT -LAUNCH DP WIPER PLUG,POSITIVE INDICATION PLUG LEFT CEMENT HEAD, UNABLE TO RECIPROCATE PIPE AFTER LINER WIPER DART LATCHUP. -DISPLACE CEMENT @ 5.0-BPM @ 1,200-PSI CATCHING CEMENT AT 380 STKS. -CEMENT AT SHOE 1120 PSI,5 BPM 15% FLOW, NO LOSSES -20 BBLS OPEN HOLE 1270 PSI,5 BPM,16% FLOW, NO LOSSES -40 BBLS OPEN HOLE 1403 PSI,3 BPM,12% FLOW,NO LOSSES -60 BBLS OPEN HOLE 1700 PSI,3 BPM,12% FLOW, NO LOSSES -80 BBLS OPEN HOLE 1915 PSI,3 BPM,12% FLOW, NO LOSSES �. -CEMENT IN PLACE AT 16:20-HRS. V S -BLEED OFF PRESSURE AND CHECK 1 FLOATS. FLOATS HOLDING. 16:30 - 17:00 0.50 CASING P RUNPRD PRESSURE UP TO 4300 PSI,AND SET DOWN i 40K ON LINER HANGER. RELEASED HANGER. ✓/ SET 40K DOWN ON PACKER ROTATING 20 RPM. RELEASE RUNNING TOOL FROM PACKER. CASING SHOE DEPTH=17,071'. TOP OF 4-1/2"LINER=13,381'MD. -PICK UP BEFORE SETTING HANGER 203K, AFTER 186K. 17:00 - 17:30 0.50 CEMT P -_ RUNPRD BREAK OUT AND LAY DOWN BAKER CEMENT HEAD AND SINGLE JOINT OF 4"DRILL PIPE. 17:30 22:30 5.00 CEMT P RUNPRD CIRCULATE OUT CEMENT. RECOVERED APPROXIMATELY 8.0-BBLS.CEMENT. PJSM- REVIEWED PROCEDURE FOR DISPLACING HOLE TO 8.5-PPG 1.0%KCL WATER. DISPLACED HOLE TO 8.5-PPG 1.0%KCL AT 10-12 BPM AT 2,045-PSI. PUMPED 776 BBLS. SEAWATER TO OBTAIN CLEAN RETURNS. 22:30 - 23:30 1.00 CEMT P RUNPRD MONITOR WELL-STATIC. CLEAN OUT HOLE FILL LINE, FLOW LINE,SHAKER TROUGH, CLEAN CEMENT MAQNIFOLD VALVES AND BLOW DOWN TOP DRIVE. Printed 10/17/2011 1:41:06PM North ?rica -ALASKA- BP Page 3 of 6 Operation Summary Report Common Well Name: 18-12 AFE No Event Type:COM-ONSHORE (CON) Start Date:9/20/2011 End Date: 9/27/2011 X3-0106Y-C: (2,603,728.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:30 - 00:00 0.50 CASING P RUNPRD POH FROM 13,343'TO 13,021'. MONITOR HOLE FILL ON TRIP TANK. 9/22/2011 00:00 - 06:30 6.50 CASING P RUNPRD CONTINUE TO POOH STANDING BACK 4"DP FROM 13,021'MD TO SURFACE. MONITOR HOLE FILL ON TRIP TANK. LAY DOWN LINER RUNNING TOOL AS PER BOT REP. 06:30 - 08:00 1.50 CASING P RUNPRD PRESSURE TEST 4-1/2"PRODUCTION LINER AND 4-1/2"X 7"LTP -250 PSI LOW/3500 PSI HIGH -CHARTED 5 MIN LOW/30 MIN HIGH 10 PSI LOSS IN 1ST 15 MIN,5 PSI LOSS IN 2ND 15 MIN LEAK TIGHT TEST-WTL APPROVAL TO CONTINUE OPERATIONS BLEED TO 0-PSI, OPEN CHOKE,VERIFY NO PRESSURE,OPEN BLIND RAMS,B/D CHOKE AND KILL LINE. 08:00 - 10:30 2.50 PERFOB P OTHCMP R/U TO RUN DRILL PIPE CONVEYEDI PERFORATING GUNS M/U SAFETY JOINT,LAY OUT PIPE SHED PER RUNNING ORDER. 10:30 - 11:00 0.50-- PERFOB P OTHCMP PJSM HELD WITH CREW AND SLB HANDS ON RUNNING TCP GUNS 11:00 - 12:00 1.00 PERFOB P OTHCMP RIH WITH PERF GUNS TO 780'MD. MONITOR HOLE ON TRIP TANK 12:00 - 12:30 0.50 PERFOB P OTHCMP SERVICE AND GREASE WASH PIPE,TOP DRIVE,CROWN AND IRON ROUGHNECK. 12:30 - 13:00 0.50 PERFOB P OTHCMP PJSM HELD WITH CREW AND SLB HANDS ON RUNNING TCP GUNS 13:00 - 14:30 1.50 PERFOB P OTHCMP CONT RIH FROM 780'MD TO 1477'MD WITH TCP GUNS MONITOR HOLE ON TRIP TANK 14:30 - 19:00 4.50 PERFOB P OTHCMP CONT RIH ON 2.875"PAC SINGLES FROM 1477'MD TO 2715'MD M/U X/O,NO-GO STABILIZER,X/O TO 2725' MD. MONITOR HOLE ON TRIP TANK 19:00 - 00:00 5.00 PERFOB P OTHCMP CONT RIH ON 4"DP STANDS FROM 2752'MD TO 10802'MD. MONITOR HOLE ON TRIP TANK 9/23/2011 00:00 - 03:00 3.00 PERFOB P OTHCMP RIH ON 4"DP STANDS FROM 10,802'MD TO 16,100'MD. -TAG NO-GO STABILIZER ON LINER TOP -PICK UP TO PUT GUNS ON DEPTH,BOTTOM SHOT AT 16,000'MD MONITOR HOLE ON TRIP TANK-WELL STATIC 03:00 - 04:30 1.50 PERFOB P OTHCMP FIRE PERF GUNS ON DEPTH AT 16000'MD. PERF INTERVALS:1300'TOTAL PERF eilti LENGTH -14,550'TO 14,700'MD(150'INTERVAL) -14,850'TO 16,000'MD(1150'INTERVAL) POSITIVE INDICATION GUNS FIRED,2 BBLS LOSS AFTER GUNS FIRED. 04:30 - 06:00 1.50 PERFOB P OTHCMP POOH STANDING BACK 4"DP FROM 16,000' MD TO 14,600'MD(ABOVE TOP PERF). MONITOR HOLE ON TRIP TANK-WELL TAKING CORRECT FILL Printed 10/17/2011 1:41:06PM North erica -ALASKA - BP Page 4 of 6 Operation Summary Report Common Well Name: 18-12 AFE No Event Type:COM-ONSHORE(CON) Start Date:9/20/2011 End Date:9/27/2011 X3-0106Y-C:(2,603,728.00) Project: Prudhoe Bay Site: PB DS 18 Rig Name/No.:DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor:DOYON DRILLING INC. UWI:500292161500 A ctive Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:00 - 08:00 2.00 PERFOB P OTHCMP CIRC BOTTOMS UP -300 GPM,2530 PSI MONITOR WELL FOR 10 MIN-WELL STATIC 08:00 - 12:00 4.00 PERFOB P OTHCMP POOH LAYING DOWN 4"DP FROM 14,600'MD TO 6847'MD. MONITOR HOLE ON TRIP TANK-5 BPH LOSS RATE 12:00 - 12:30 0.50 PERFOB P OTHCMP PJSM WITH CREW ON LAYING DOWN 4"DP 12:30 - 16:00 3.50 PERFOB P OTHCMP CONT LAYING DOWN 4"DP FROM 6847'MD TO 2725'MD MONITOR HOLE ON TRIP TANK-5 BPH LOSS RATE 16:00 - 17:00 1.00 PERFOB P OTHCMP CHANGE OUT 4"DP HANDLING EQUIPMENT TO 2-7/8"PAC DP HANDLING EQUIPMENT,R/U POWER TONGS. 17:00 - 19:00 2.00 PERFOB P OTHCMP LAY DOWN 2-7/8"PAC DP FROM 2725'MD TO 1600 MD MONITOR HOLE ON TRIP TANK-5 BPH LOSS RATE 19:00 - 19:30 0.50 PERFOB P OTHCMP PJSM WITH CREW AND SLB PERF HANDS 19:30 - 23:30 4.00 PERFOB P OTHCMP LAY DOWN 2-7/8"PAC DP AND 2-7/8"TCP GUNS FROM 1600'MD TO SURFACE. INSPECTED PERF GUNS,ALL GUNS FIRED MONITOR HOLE ON TRIP TANK-5 BPH LOSS RATE 23:30 - 00:00 0.50 PERFOB P OTHCMP CLEAN AND CLEAR RIG FLOOR,L/D SINGLE STACK POWER TONGS,B/O XO AND LIFT SUBS ON SHEAR JT,C/O BX ELEVATOR INSERTS TO 4"DP. TOTAL FLUID LOSS TO WELL IN LAST 24 HRS -82 BBLS 9/24/2011 00:00 - 01:00 1.00 PERFOB P OTHCMP CLEAN AND CLEAR RIG FLOOR,LAY DOWN TCP AND PAC EQUIPMENT.MONITOR HOLE ON TRIP TANK-1 BPH LOSS RATE 01:00 - 03:30 2.50 PERFOB P OTHCMP RIH WITH 4"DP STANDS FROM DERRICK WITH 7'MULE SHOE FROM SURFACE TO 4376'MD. 03:30 - 09:00 5.50 PERFOB P OTHCMP POOH LAYING DOWN 4"DP SINGLES TO PIPE SHED FROM 4376'MD TO SURFACE 09:00 - 11:30 2.50 RUNCOM P RUNCMP PULL WEAR BUSHING,FUNCTION TEST RAMS, R/U TO RUN 4-1/2"13CR COMPLETION. 11:30 - 12:00 0.50 RUNCOM P RUNCMP RIH WITH 4-1/2"13CR VAMTOP COMPLETION TO 167'MD. -WLEG -XN-NIPPLE WITH RHC-M -X-NIPPLE -HES TNT PACKER -X-NIPPLE MONITOR HOLE ON TRIP TANK-1 BPH LOSS RATE 12:00 - 12:30 0.50 RUNCOM P RUNCMP PJSM TO RUN 4-1/2"13CR VAMTOP COMPLETION • 12:30 - 00:00 11.50 RUNCOM P RUNCMP CONT RIH WITH 4-1/2"13CR VAMTOP COMPLETION FROM 167'MD TO 6471'MD -P/U=107K,S/O=97K -M/U TQ=4.44K MONITOR HOLE ON TRIP TANK-4 BBL FLUID LOST Printed 10/17/2011 1:41:06PM North 3rica -ALASKA- BP Page 5 of 6 Operation Summary Report Common Well Name. 18-12 AFE No Event Type:COM-ONSHORE(CON) Start Date:9/20/2011 End Date:9/27/2011 X3-0106Y-C:(2,603,728.00) Project:Prudhoe Bay Site: PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/25/2011 00:00 - 01:30 1.50 RUNCOM P ■- RUNCMP COMT ET WITH FROM 4 13CR VAMTOP TO 676 COMPLETION FROM 4671'MD TO 6762'MD. MONITOR HOLE ON TRIP TANK 01:30 - 04:30 3.00 RUNCOM N RREP RUNCMP MAN RIDER LINE PARTED AND FELL TO RIG FLOOR.INVESTIGATION HELD.INSPECT CROWN,TOP DRIVE,AND BLOCKS.SEE IR #2011-IR-3951687. 04:30 - 18:00 13.50 RUNCOM P RUNCMP CONT RIH WITH 4-1/2"13CR VAMTOP COMPLETION FROM 6762'MD TO 13285'MD. -TAG UP ON NO-GO AT 13402'MD. P/U=176K,S/0=110K MONITOR HOLE ON TRIP TANK 18:00 - 21:00 3.00 RUNCOM P RUNCMP M/U PUP JTS, UD COMPENSATOR,C/O BX ELEVATOR INSERTS TO 4"DP, M/U TBG HANGER AND LANDING JT, DRAIN STACK, LAND TBG HANGER AND RUN IN LOCK DOWN SCREWS. 21:00 - 00:00 3.00 RUNCOM P RUNCMP PJSM. REVERSE CIRC,TEST LINES TO 3500 PSI. REVERSE CIRC. -201 BBL 8.5 PPG KCL -290 BBL 8.5 PPG CORROSION INHIBITED KCL -86 BBL 8.5 PPG KCL -PUMP AT 168 GPM,530 PSI SWAP TO CIRC DOWN TBG -10 BBL,126 GPM,180 PSI M/U LANDING JT,DROP BALL AND ROD WITH 2"ROLLERS. 9/26/2011 00:00 - 03:30 3.50 RUNCOM P RUNCMP PRESSURE UP TBG TO SET COMPLETION PACKER AND PRESSURE TEST. -500/3500 PSI FOR 5/30 MIN CHARTED -34 PSI LOST IN FIRST 15 MIN -11 PSI LOST IN SECOND 15 MIN BLEED TBG PRESSURE TO 1500 PSI. PRESSURE UP ANNULUS TO PRESSURE TEST. -500/3500 PSI FOR 5/30 MIN CHARTED -20 PSI LOST IN FIRST 15 MIN -5 PSI LOST IN SECOND 15 MIN WTL APPROVAL TO CONTINUE BLEED TBG TO 0 PSI TO SHEAR DCR VALVE. PUMP BOTH WAYS TO CONFIRM SHEAR VALVE OPEN. 03:30 04:30 1.00 RUNCOM P ■- RUNCMP MONITOR WELL FOR 1 PRIOR T INSTALLI NG TWC-WELL S TA TIC.R/U TO SET TWC.CLEAN AND CLEAR RIG FLOOR. 04:30 - 06:00 1.50 RUNCOM P RUNCMP SST TWC AS PER FMC REP WITH T-BAR, -PRESSURE TEST TWC FROM BELOW TO 250/2000 PSI FOR 5/5 MIN -PRESSURE TEST TWC FROM ABOVE TO 250 /3500 PSI FOR 5/5 MIN -GOOD TEST FROM BELOW AND ABOVE 06:00 - 07:30 1.50 BOPSUR P -_ RUNCMP B/D MUD LINES,KILL LINE,CHOKE LINE,AND CHOKE MANIFOLD.CLEAN PITS. 07:30 - 10:30 3.00 BOPSUR P RUNCMP N/D BOPE-FI OW I INF RISER,FLOW BOX, CHOKE AND KILL LINE,BOP,HIGH PRESSURE RISER AND DSA.R/D MUD LINES. Printed 10/17/2011 1:41:06PM North ;rica -ALASKA - BP Page 6 of 6 Operation Summary Report Common Well Name: 18-12 i AFE No Event Type:COM-ONSHORE(CON) Start Date:9/20/2011 End Date: 9/27/2011 IX3-0106Y-C: (2,603,728.00) Project:Prudhoe Bay Site:PB DS 18 Rig Name/No.: DOYON 25 Spud Date/Time: 11/9/1986 12:00:00AM Rig Release:9/27/2011 Rig Contractor: DOYON DRILLING INC. UWI:500292161500 Active Datum: 18-12C Actual @56.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:30 - 12:00 1.50 BOPSUR P RUNCMP WEEKLY SAFETY MEETING.PREP FOR CAMP MOVE. 12:00 - 15:30 3.50 BOPSUR P RUNCMP CONT N/D DSA,ADAPTER SPOOL.PJSM FOR N/U TREE AND ADAPTER FLANGE. 15:30 - 18:00 2.50 WHSUR P RUNCMP N/U 11"ADAPTER SPOOL, WU TREE. -PRESSURE TEST ADAPTER SPOOL -500/5000 PSI FOR 5/10 MIN -GOOD TEST PJSM FOR PRESSURE TESTING TREE WITH DIESEL. 18:00 - 20:00 2.00 WHSUR P RUNCMP PRESSURE TEST TREE WITH DIESEL 250/5000 PSI FOR 5/10 MIN CHARTED -GOOD TEST R/D TEST EQUIPMENT AND DRAIN TREE 20:00 - 21:30 1.50 WHSUR P RUNCMP R/U DSM LUBRICATOR, PRESSURE TEST LUBRICATOR 250/3500 PSI FOR 5/5 MIN CHARTED -GOOD TEST PULL TWC, L/D DSM LUBRICATOR. 21:30 - 00:00 2.50 WHSUR P RUNCMP PJSM FOR PUMPING FREEZE PROTECT. REVERSE CIRCULATE DIESEL FREEZE PROTECT DOWN IA. 42 GPM,1950 PSI 57 GPM,3000 PSI -50 BBLS AWAY,3500 PSI -EQUALIZE TBG AND IA BLEED PSI TO 0 PUMP DOWN TBG,RETURNS OUT IA -5 BBL,22 GPM,500 PSI PUMP DOWN IA,RETURNS OUT TBG -23 GPM,2400 PSI PUMP A TOTAL OF 146 BBLS OF 80 DEG DIESEL U-TUBE DIESEL FREEZE PROTECT 9/27/2011 00:00 - 01:30 1.50 WHSUR P RUNCMP ALLOW DIESEL FREEZE PROTECT TO U-TUBE BETWEEN IA AND TBG. 01:30 - 03:30 2.00 WHSUR P RUNCMP R/U LUBRICATOR AND SET BPV 03:30 - 04:00 0.50 WHSUR P RUNCMP PRESSURE TEST BPV FROM BELOW -250/2000 PSI FOR 5/5 MIN CHARTED -GOOD TEST 04:00 06:00 2.00 WHSUR P RUNCMP R/D LUBRICATOR AND SECURE WELL. RELEASED RIG AT 06:00. Printed 10/17/2011 1:41:06PM North America - ALASKA - BP Prudhoe Bay PB DS 18 18-12 500292161500 18-12C Design: 18-12C Survey Report - Geographic 20 September, 2011 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Project Prudhoe Bay,GPB,PRUDHOE BAY Map System: US State Plane 1927(Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927(NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Site PB DS 18,TR-11-14 Site Position: Northing: 5,959,213.15ft Latitude: 70°17'35.252 N From: Map Easting: 691,583.44ft Longitude: 148°26'55.555 W Position Uncertainty: 0.00 ft Slot Radius: 0.000in Grid Convergence: 1.46 ° Well 18-12 API No 500292161500 Well Position +N/-S 0.00 ft Northing: 5,960,711.76 ft Latitude: 70°17'49.840 N +E/-W 0.00 ft Easting: 692,167.91 ft Longitude: 148°26'37.409 W Position Uncertainty 0.00 ft Wellhead Elevation: 0.00 ft Ground Level: 17.04 ft Wellbore 18-12C API No 500292161503 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (0) (0) (nT) BGGM2011 8/25/2011 21.53 81.03 57.672 Design 18-12C Audit Notes: Version: Phase: ACTUAL Tie On Depth: 3,234.29 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (0) 39.25 0.00 0.00 109.93 Survey Program Date: 9/20/2011 From To (ft) (ft) Survey(Wellbore) Tool Name Description 59.29 3,234.29 Gyro Survey(18-12) GYD-GC-MS Gyrodata gyrocompassing m/s 3,264.00 3,465.63 GYRO(18-12C) GYD-GC-SS Gyrodata gyro single shots 3,490.00 12,990.00 Gyrodata Continuous(18-12C) GYD-CT-DMS Gyrodata cont.drillpipe m/s j 12,990.00 13,499.10 MWD Run 200(18-12C) MWD+IFR+MS MWD+IFR+Multi Station 13,572.16 14,270.15 MWD Run 300(18-12C) MWD+IFR+MS MWD+IFR+Multi Station 14,300.00 14,403.52 MWD Run 400(18-12C) MWD+IFR MWD+IFR correction 14,501.21 17,015.55 MWD Run 500(18-12C) MWD+IFR+MS MWD+IFR+Multi Station 920/2011 3:40:37PM Page 2 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (0) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 39.25 0.00 0.00 39.25 0.00 0.00 5,960,711.76 692,167.91 70°17'49.840 N 148°26'37.409 W 59.29 0.17 201.94 59.29 -0.03 -0.01 5,960,711.73 692,167.90 70°17'49.840 N 148°26'37.409 W' 159.29 0.17 191.69 159.29 -0.31 -0.10 5,960,711.45 692,167.82 70°17'49.837 N 148°26'37.412 W 259.29 0.14 184.69 259.29 -0.58 -0.14 5,960,711.18 692,167.79 70°17'49.835 N 148°26'37.413 W 359.29 0.20 185.60 359.29 -0.87 -0.16 5,960,710.88 692,167.77 70°17'49.832 N 148°26'37.414 W 459.29 0.09 206.98 459.29 -1.12 -0.22 5,960,710.64 692,167.72 70°17'49.829 N 148°26'37.415 W 559.29 0.23 120.05 559.29 -1.29 -0.08 5,960,710.47 692,167.86 70°17'49.828 N 148°26'37.411 W 659.29 0.45 98.98 659.29 -1.45 0.48 5,960,710.32 692,168.43 70°17'49.826 N 148°26'37.395 W 759.29 1.16 90.39 759.28 -1.52 1.88 5,960,710.29 692,169.83 70°17'49.826 N 148°26'37.354 W 859.29 2.65 89.71 859.22 -1.51 5.21 5,960,710.38 692,173.15 70°17'49.826 N 148°26'37.257 W 959.29 5.16 89.03 958.98 -1.42 12.02 5,960,710.64 692,179.96 70°17'49.826 N 148°26'37.059 W 1,059.29 7.66 91.73 1,058.34 -1.55 23.18 5,960,710.80 692,191.12 70°17'49.825 N 148°26'36.733 W 1,159.29 9.00 95.38 1,157.29 -2.48 37.63 5,960,710.24 692,205.59 70°17'49.816 N 148°26'36.312 W 1,209.29 9.53 98.87 1,206.64 -3.49 45.61 5,960,709.44 692,213.59 70°17'49.806 N 148°26'36.080 W 1,234.29 9.76 99.78 1,231.28 -4.17 49.74 5,960,708.87 692,217.74 70°17'49.799 N 148°26'35.959 W 1,259.29 10.05 101.09 1,255.91 -4.95 53.97 5,960,708.19 692,221.99 70°17'49.792 N 148°26'35.836 W 1,284.29 10.29 102.95 1,280.52 -5.87 58.29 5,960,707.38 692,226.33 70°17'49.783 N 148°26'35.710 W 1,309.29 10.63 104.71 1,305.10 -6.95 62.69 5,960,706.41 692,230.76 70°17'49.772 N 148°26'35.582 W 1,334.29 10.96 105.85 1,329.66 -8.19 67.21 5,960,705.29 692,235.30 70°17'49.760 N 148°26'35.450 W 1,359.29 11.25 106.10 1,354.19 -9.51 71.84 5,960,704.09 692,239.97 70°17'49.747 N 148°26'35.315 W 1,384.29 11.73 106.69 1,378.69 -10.92 76.62 5,960,702.80 692,244.78 70°17'49.733 N 148°26'35.176 W 1,409.29 12.03 107.38 1,403.15 -12.43 81.54 5,960,701.42 692,249.73 70°17'49.718 N 148°26'35.032 W 1,434.29 12.22 107.61 1,427.60 -14.01 86.55 5,960,699.97 692,254.78 70°17'49.703 N 148°26'34.886 W 12.50 107.96 1,452.02 -15.64 91.64 5,960,698.47 692,259.92 70°17'49.687 N 148°26'34.738 W, 1,484.29 13.03 107.70 1,476.40 -17.33 96.90 5,960,696.91 692,265.22 70°17'49.670 N 148°26'34.584 W 1,509.29 13.72 107.81 1,500.72 -19.10 102.41 5,960,695.29 692,270.77 70°17'49.653 N 148°26'34.424 W 1,534.29 14.46 108.24 1,524.97 -20.98 108.19 5,960,693.55 692,276.60 70°17'49.634 N 148°26'34.255 W 1,559.29 15.29 109.34 1,549.13 -23.05 114.27 5,960,691.64 692,282.72 70°17'49.614 N 148°26'34.078 W 1,584.29 15.75 110.18 1,573.22 -25.31 120.56 5,960,689.54 692,289.08 70°17'49.592 N 148°26'33.895 W 1,609.29 16.07 110.91 1,597.26 -27.72 126.98 5,960,687.30 692,295.55 70°17'49.568 N 148°26'33.708 W 1,634.29 16.44 112.11 1,621.26 -30.28 133.49 5,960,684.90 692,302.12 70°17'49.543 N 148°26'33.518 W 1,659.29 16.70 113.03 1,645.22 -33.02 140.07 5,960,682.34 692,308.78 70°17'49.516 N 148°26'33.326 W 1,684.29 17.04 113.40 1,669.15 -35.88 146.74 5,960,679.65 692,315.51 70°17'49.488 N 148°26'33.132 W 1,709.29 17.45 113.34 1,693.02 -38.82 153.55 5,960,676.88 692,322.39 70°17'49.459 N 148°26'32.933 W 1,734.29 17.85 113.07 1,716.85 -41.81 160.51 5,960,674.07 692,329.43 70°17'49.429 N 148°26'32.730 W 1,759.29 18.42 112.69 1,740.61 -44.83 167.68 5,960,671.23 692,336.67 70°17'49.400 N 148°26'32.521 W 1,784.29 19.05 112.02 1,764.28 -47.88 175.11 5,960,668.37 692,344.18 70°17'49.370 N 148°26'32.305 W 1,809.29 19.89 111.10 1,787.85 -50.94 182.86 5,960,665.51 692,352.00 70°17'49.339 N 148°26'32.079 W 1,834.29 20.57 110.72 1,811.31 -54.03 190.93 5,960,662.63 692,360.15 70°17'49.309 N 148°26'31.844 W 1,859.29 21.11 110.63 1,834.67 -57.17 199.25 5,960,659.71 692,368.55 70°17'49.278 N 148°26'31.601 W 1,884.29 21.57 110.68 1,857.96 -60.38 207.77 5,960,656.72 692,377.14 70°17'49.247 N 148°26'31.353 W 1,909.29 22.02 110.53 1,881.17 -63.65 216.46 5,960,653.67 692,385.91 70°17'49.214 N 148°26'31.100 W 1,934.29 22.50 110.15 1,904.31 -66.94 225.34 5,960,650.61 692,394.87 70°17'49.182 N 148°26'30.841 W 1,959.29 22.86 110.20 1,927.38 -70.26 234.38 5,960,647.52 692,404.00 70°17'49.149 N 148°26'30.577 W 1,984.29 23.30 110.32 1,950.37 -73.65 243.58 5,960,644.36 692,413.28 70°17'49.116 N 148°26'30.309 W 2,009.29 23.85 110.41 1,973.29 -77.13 252.95 5,960,641.12 692,422.74 70°17'49.082 N 148°26'30.036 W 2,034.29 24.50 110.66 1,996.10 -80.73 262.54 5,960,637.78 692,432.41 70°17'49.046 N 148°26'29.756 W 2,059.29 25.01 111.47 2,018.80 -84.49 272.31 5,960,634.27 692,442.27 70°17'49.009 N 148°26'29.472 W'. 2,084.29 25.24 112.34 2,041.43 -88.45 282.16 5,960,630.56 692,452.22 70°17'48.971 N 148°26'29.185 W 2,109.29 25.32 112.63 2,064.04 -92.53 292.02 5,960,626.73 692,462.18 70°17'48.930 N 148°26'28.897 W'. 2,134.29 25.34 113.12 2,086.63 -96.69 301.87 5,960,622.83 692,472.14 70°17'48.889 N 148°26'28.610 W 2,159.29 25.25 114.02 2,109.24 -100.96 311.67 5,960,618.81 692,482.04 70°17'48.847 N 148°26'28.324 W 2,184.29 25.32 114.14 2,131.84 -105.32 321.41 5,960,614.70 692,491.89 70°17'48.805 N 148°26'28.040 W 2,209.29 25.45 113.96 2,154.43 -109.69 331.20 5,960,610.58 692,501.79 70°17'48.762 N 148°26'27.755 W 2,234.29 25.77 113.82 2,176.97 -114.06 341.08 5,960,606.46 692,511.78 70°17'48.719 N 148°26'27.467 W 920/2011 3:40:37PM Page 3 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Survey II Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 2,259.29 26.00 113.62 2,199.46 -118.45 351.07 5,960,602.33 692,521.88 70°17'48.675 N 148°26'27.176 W 2,284.29 26.38 112.83 2,221.90 -122.80 361.21 5,960,598.24 692,532.12 70°17'48.633 N 148°26'26.880 W 2,309.29 26.74 112.17 2,244.26 -127.08 371.54 5,960,594.23 692,542.56 70°17'48.591 N 148°26'26.579 W 2,334.29 26.74 110.53 2,266.59 -131.18 382.02 5,960,590.40 692,553.13 70°17'48.550 N 148°26'26.274 W 2,359.29 26.84 109.69 2,288.90 -135.05 392.60 5,960,586.80 692,563.81 70°17'48.512 N 148°26'25.965 W 2,384.29 27.02 109.42 2,311.19 -138.84 403.27 5,960,583.29 692,574.57 70°17'48.475 N 148°26'25.654 W 2,409.29 27.26 109.12 2,333.44 -142.60 414.03 5,960,579.80 692,585.43 70°17'48.438 N 148°26'25.341 W 2,434.29 27.48 108.57 2,355.64 -146.31 424.91 5,960,576.37 692,596.40 70°17'48.401 N 148°26'25.024 W 2,459.29 27.72 108.53 2,377.80 -150.00 435.89 5,960,572.96 692,607.47 70°17'48.365 N 148°26'24.704 W 2,484.29 28.08 108.49 2,399.89 -153.71 446.98 5,960,569.54 692,618.65 70°17'48.329 N 148°26'24.380 W 2,509.29 28.42 108.56 2,421.91 -157.47 458.20 5,960,566.06 692,629.96 70°17'48.292 N 148°26'24.053 W 2,534.29 28.68 108.45 2,443.87 -161.26 469.53 5,960,562.56 692,641.39 70°17'48.254 N 148°26'23.723 W 2,559.29 29.01 108.70 2,465.77 -165.11 480.97 5,960,559.01 692,652.91 70°17'48.216 N 148°26'23.390 W 2,584.29 29.37 109.10 2,487.60 -169.06 492.50 5,960,555.36 692,664.54 70°17'48.178 N 148°26'23.053 W 2,609.29 29.67 110.00 2,509.35 -173.18 504.11 5,960,551.54 692,676.25 70°17'48.137 N 148°26'22.715 W 2,634.29 30.00 110.55 2,531.04 -177.49 515.77 5,960,547.53 692,688.02 70°17'48.095 N 148°26'22.375 W 2,659.29 30.22 111.03 2,552.66 -181.94 527.50 5,960,543.38 692,699.86 70°17'48.051 N 148°26'22.033 W 2,684.29 30.45 111.03 2,574.24 -186.47 539.29 5,960,539.15 692,711.76 70°17'48.006 N 148°26'21.690 W 2,709.29 30.64 110.95 2,595.77 -191.02 551.15 5,960,534.90 692,723.73 70°17'47.962 N 148°26'21.344 W 2,734.29 31.00 110.51 2,617.24 -195.56 563.13 5,960,530.68 692,735.82 70°17'47.917 N 148°26'20.995 W 2,759.29 31.30 110.04 2,638.64 -200.04 575.26 5,960,526.51 692,748.06 70°17'47.873 N 148°26'20.641 W 2,784.29 31.47 109.80 2,659.98 -204.47 587.50 5,960,522.39 692,760.41 70°17'47.829 N 148°26'20.285 W 2,809.29 31.46 109.12 2,681.30 -208.82 599.80 5,960,518.36 692,772.82 70°17'47.786 N 148°26'19.926 W 2,834.29 31.23 108.52 2,702.65 -213.02 612.11 5,960,514.48 692,785.23 70°17'47.745 N 148°26'19.567 W 2,859.29 31.41 108.44 2,724.01 -217.14 624.44 5,960,510.67 692,797.66 70°17'47.705 N 148°26'19.208 W 2,884.29 31.53 108.65 2,745.33 -221.29 636.81 5,960,506.84 692,810.13 70°17 47.664 N 148°26'18.847 W 2,909.29 31.63 108.75 2,766.63 -225.48 649.21 5,960,502.96 692,822.64 70°17'47.623 N 148°26'18.486 W 2,934.29 31.77 108.77 2,787.90 -229.71 661.65 5,960,499.06 692,835.18 70°17'47.581 N 148°26'18.123 W 2,959.29 31.88 109.00 2,809.14 -233.98 674.12 5,960,495.11 692,847.76 70°17'47.539 N 148°26'17.760 W 2,984.29 32.03 109.25 2,830.35 -238.31 686.62 5,960,491.10 692,860.36 70°17'47.496 N 148°26'17.395 W 3,009.29 32.20 109.34 2,851.53 -242.70 699.17 5,960,487.03 692,873.01 70°17'47.453 N 148°26'17.030 W 3,034.29 32.33 109.47 2,872.67 -247.14 711.76 5,960,482.92 692,885.71 70°17'47.410 N 148°26'16.663 W 3,059.29 32.51 109.37 2,893.77 -251.59 724.40 5,960,478.79 692,898.46 70°17'47.366 N 148°26'16.294 W 3,084.29 32.39 109.61 2,914.87 -256.07 737.04 5,960,474.64 692,911.22 70°17'47.322 N 148°26'15.926 W 3,109.29 32.48 109.66 2,935.97 -260.57 749.67 5,960,470.45 692,923.95 70°17'47.277 N 148°26'15.558 W 3,134.29 32.57 109.73 2,957.05 -265.10 762.33 5,960,466.25 692,936.72 70°17'47.233 N 148°26'15.189 W 3,159.29 32.64 109.74 2,978.11 -269.65 775.01 5,960,462.03 692,949.51 70°17'47.188 N 148°26'14.819 W 3,184.29 32.62 109.84 2,999.16 -274.22 787.69 5,960,457.79 692,962.31 70°17'47.143 N 148°26'14.449 W 3,209.29 32.58 109.91 3,020.22 -278.80 800.36 5,960,453.54 692,975.09 70°17'47.098 N 148°26'14.080 W 3,234.29 32.78 109.93 3,041.27 -283.39 813.05 5,960,449.26 692,987.89 70°17'47.053 N 148°26'13.710 W' 3,264.00 33.49 108.95 3,066.15 -288.80 828.36 5,960,444.25 693,003.34 70°17'47.000 N 148°26'13.264 W 3,293.52 34.20 108.01 3,090.66 -294.01 843.96 5,960,439.44 693,019.06 70°17'46.948 N 148°26'12.810 W 3,323.52 35.05 103.96 3,115.35 -298.69 860.34 5,960,435.18 693,035.55 70°17'46.902 N 148°26'12.332 W 3,353.52 36.33 98.96 3,139.72 -302.16 877.48 5,960,432.16 693,052.78 70°17'46.868 N 148°26'11.832 W 3,383.52 37.06 96.03 3,163.78 -304.49 895.25 5,960,430.28 693,070.60 70°17'46.845 N 148°26'11.315 W 3,413.52 37.49 93.54 3,187.65 -306.00 913.35 5,960,429.23 693,088.73 70°17'46.830 N 148°26'10.787 W 3,443.52 37.87 91.08 3,211.40 -306.74 931.67 5,960,428.96 693,107.06 70°17'46.823 N 148°26'10.253 W 3,465.63 38.04 89.77 3,228.83 -306.84 945.27 5,960,429.21 693,120.66 70°17'46.822 N 148°26'9.857 W 3,490.00 38.68 88.01 3,247.94 -306.55 960.39 5,960,429.89 693,135.77 70°17'46.825 N 148°26'9.416 W 3,515.00 38.93 87.26 3,267.42 -305.90 976.04 5,960,430.93 693,151.40 70°17'46.831 N 148°26'8.960 W 3,540.00 39.28 86.70 3,286.82 -305.07 991.79 5,960,432.17 693,167.12 70°17'46.839 N 148°26'8.501 W 3,565.00 39.89 85.50 3,306.09 -303.99 1,007.68 5,960,433.66 693,182.97 70°17'46.850 N 148°26'8.037 W 3,590.00 41.07 84.33 3,325.11 -302.54 1,023.84 5,960,435.51 693,199.10 70°17'46.864 N 148°26'7.566 W 3,615.00 41.40 84.08 3,343.91 -300.88 1,040.24 5,960,437.59 693,215.44 70°17'46.881 N 148°26'7.088 W' 3,640.00 41.74 83.57 3,362.61 -299.10 1,056.73 5,960,439.80 693,231.88 70°17'46.898 N 148°26'6.608 W 9/20/2011 3:40:37PM Page 4 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 3,665.00 43.09 82.24 3,381.07 -297.01 1,073.46 5,960,442.31 693,248.55 70°17'46.919 N 148°26'6.120 W 3,690.00 44.72 80.51 3,399.08 -294.41 1,090.60 5,960,445.35 693,265.62 70°17'46.944 N 148°26'5.620 W 3,715.00 45.52 80.03 3,416.72 -291.41 1,108.06 5,960,448.79 693,283.00 70°17'46.974 N 148°26'5.111 W 3,740.00 45.68 79.19 3,434.21 -288.19 1,125.63 5,960,452.46 693,300.47 70°17'47.005 N 148°26'4.599 W 3,765.00 46.41 77.48 3,451.56 -284.55 1,143.25 5,960,456.55 693,318.00 70°17'47.041 N 148°26'4.086 W 3,790.00 46.80 77.33 3,468.74 -280.59 1,160.98 5,960,460.96 693,335.62 70°17'47.080 N 148°26'3.569 W 3,815.00 47.19 77.13 3,485.79 -276.55 1,178.81 5,960,465.46 693,353.34 70°17'47.120 N 148°26'3.049 W 3,840.00 47.68 76.66 3,502.70 -272.37 1,196.74 5,960,470.09 693,371.16 70°17'47.161 N 148°26'2.526 W 3,865.00 49.17 75.80 3,519.29 -267.92 1,214.91 5,960,475.01 693,389.20 70°17'47.205 N 148°26'1.997 W 3,890.00 49.77 75.20 3,535.54 -263.16 1,233.30 5,960,480.23 693,407.47 70°17'47.251 N 148°26'1.461 W 3,915.00 50.41 74.66 3,551.58 -258.18 1,251.82 5,960,485.69 693,425.85 70°17'47.300 N 148°26'0.921 W 3,940.00 51.01 73.68 3,567.41 -252.90 1,270.43 5,960,491.44 693,444.32 70°17'47.352 N 148°26'0.378 W 3,965.00 51.54 72.34 3,583.05 -247.20 1,289.09 5,960,497.62 693,462.82 70°17'47.408 N 148°25'59.835 W 3,990.00 52.07 71.14 3,598.51 -241.04 1,307.74 5,960,504.25 693,481.31 70°17'47.469 N 148°25'59.291 W 4,015.00 52.47 70.55 3,613.81 -234.55 1,326.42 5,960,511.21 693,499.82 70°17'47.532 N 148°25'58.746 W 4,040.00 53.31 69.27 3,628.89 -227.71 1,345.14 5,960,518.54 693,518.36 70°17'47.600 N 148°25'58.201 W 4,065.00 54.31 67.86 3,643.65 -220.33 1,363.92 5,960,526.39 693,536.94 70°17'47.672 N 148°25'57.653 W 4,090.00 55.01 67.17 3,658.11 -212.53 1,382.77 5,960,534.67 693,555.58 70°17'47.749 N 148°25'57.104 W 4,115.00 55.49 66.43 3,672.36 -204.44 1,401.65 5,960,543.24 693,574.24 70°17'47.829 N 148°25'56.554 W 4,140.00 57.05 64.95 3,686.24 -195.88 1,420.59 5,960,552.28 693,592.96 70°17'47.913 N 148°25'56.001 W 4,165.00 58.26 63.96 3,699.62 -186.77 1,439.65 5,960,561.87 693,611.78 70°17'48.002 N 148°25'55.446 W 4,190.00 58.79 63.66 3,712.67 -177.36 1,458.78 5,960,571.77 693,630.66 70°17'48.095 N 148°25'54.888 W 4,215.00 59.35 63.32 3,725.52 -167.79 1,477.97 5,960,581.83 693,649.60 70°17'48.189 N 148°25'54.329 W 4,240.00 60.97 61.71 3,737.96 -157.78 1,497.20 5,960,592.33 693,668.57 70°17'48.287 N 148°25'53.768 W 4,265.00 62.03 61.00 3,749.89 -147.24 1,516.48 5,960,603.35 693,687.58 70°17'48.391 N 148°25'53.206 W 4,290.00 62.62 60.90 3,761.50 -136.49 1,535.84 5,960,614.59 693,706.65 70°17'48.497 N 148°25'52.642 W 4,315.00 63.05 60.84 3,772.92 -125.67 1,555.27 5,960,625.91 693,725.79 70°17'48.603 N 148°25'52.075 W 4,340.00 63.73 60.53 3,784.11 -114.72 1,574.76 5,960,637.35 693,744.99 70°17'48.711 N 148°25'51.507 W 4,365.00 63.87 60.53 3,795.15 -103.69 1,594.29 5,960,648.88 693,764.23 70°17'48.819 N 148°25'50.938 W 4,390.00 64.41 60.57 3,806.06 -92.63 1,613.88 5,960,660.43 693,783.53 70°17'48.928 N 148°25'50.367 W' 4,415.00 64.65 60.59 3,816.81 -81.54 1,633.54 5,960,672.02 693,802.90 70°17'49.037 N 148°25'49.794 W, 4,440.00 65.01 60.55 3,827.44 -70.42 1,653.24 5,960,683.64 693,822.32 70°17'49.146 N 148°25'49.219 W 4,465.00 65.05 60.55 3,837.99 -59.28 1,672.98 5,960,695.28 693,841.76 70°17'49.256 N 148°25'48.644 W 4,490.00 64.79 60.48 3,848.59 -48.13 1,692.69 5,960,706.92 693,861.18 70°17'49.365 N 148°25'48.069 W 4,515.00 64.86 60.40 3,859.23 -36.97 1,712.37 5,960,718.58 693,880.56 70°17'49.475 N 148°25'47.496 W 4,540.00 64.81 60.35 3,869.86 -25.79 1,732.04 5,960,730.27 693,899.94 70°17'49.585 N 148°25'46.922 W 4,565.00 64.68 60.24 3,880.52 -14.58 1,751.68 5,960,741.97 693,919.28 70°17'49.695 N 148°25'46.350 W I 4,590.00 64.81 60.22 3,891.19 -3.36 1,771.30 5,960,753.69 693,938.62 70°17'49.805 N 148°25'45.777 W 4,615.00 65.05 60.25 3,901.78 7.88 1,790.96 5,960,765.43 693,957.98 70°17'49.916 N 148°25'45.204 W 4,640.00 65.36 60.23 3,912.27 19.15 1,810.66 5,960,777.20 693,977.39 70°17'50.027 N 148°25'44.630 W 4,665.00 65.40 60.16 3,922.68 30.45 1,830.38 5,960,789.00 693,996.81 70°17'50.138 N 148°25'44.055 W 4,690.00 65.42 60.14 3,933.08 41.76 1,850.10 5,960,800.81 694,016.23 70°17'50.249 N 148°25'43.480 W 4,715.00 65.32 60.12 3,943.50 53.08 1,869.81 5,960,812.63 694,035.64 70°17'50.360 N 148°25'42.906 W 4,740.00 65.43 60.03 3,953.92 64.42 1,889.50 5,960,824.46 694,055.04 70°17'50.472 N 148°25'42.331 W 4,765.00 65.49 59.98 3,964.30 75.79 1,909.20 5,960,836.33 694,074.44 70°17'50.583 N 148°25'41.757 W 4,790.00 65.54 59.90 3,974.66 87.18 1,928.89 5,960,848.23 694,093.83 70°17'50.695 N 148°25'41.183 W 4,815.00 65.46 59.84 3,985.03 98.60 1,948.57 5,960,860.15 694,113.20 70°17'50.808 N 148°25'40.610 W 4,840.00 65.43 59.86 3,995.42 110.02 1,968.23 5,960,872.07 694,132.57 70°17'50.920 N 148°25'40.036 W 4,865.00 65.73 59.91 4,005.76 121.44 1,987.92 5,960,883.99 694,151.96 70°17'51.032 N 148°25'39.462 W 4,890.00 65.73 59.89 4,016.03 132.87 2,007.64 5,960,895.92 694,171.38 70°17'51.145 N 148°25'38.887 W 4,915.00 65.70 59.84 4,026.31 144.31 2,027.34 5,960,907.86 694,190.78 70°17'51.257 N 148°25'38.313 W 4,940.00 65.35 59.76 4,036.67 155.76 2,047.01 5,960,919.80 694,210.15 70°17'51.370 N 148°25'37.740 W 4,965.00 64.53 59.37 4,047.26 167.23 2,066.54 5,960,931.77 694,229.37 70°17'51.482 N 148°25'37.170 W 4,990.00 64.35 59.15 4,058.05 178.76 2,085.92 5,960,943.78 694,248.46 70°17'51.596 N 148°25'36.605 W 5,015.00 64.17 59.04 4,068.90 190.33 2,105.24 5,960,955.84 694,267.48 70°17'51.709 N 148°25'36.042 W 9/20/2011 3:40:37PM Page 5 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95Bf Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (0) (0) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 5,040.00 64.15 58.98 4,079.80 201.91 2,124.53 5,960,967.91 694,286.46 70°17'51.823 N 148°25'35.479 W 5,065.00 63.98 58.89 4,090.73 213.51 2,143.79 5,960,980.00 694,305.41 70°17'51.937 N 148°25'34.918 W 5,090.00 64.04 58.89 4,101.69 225.12 2,163.03 5,960,992.10 694,324.35 70° 17'52.051 N 148°25'34.357 W 5,115.00 64.32 58.89 4,112.58 236.75 2,182.30 5,961,004.22 694,343.31 70°17'52.166 N 148°25'33.795 W 5,140.00 64.57 58.82 4,123.36 248.41 2,201.60 5,961,016.37 694,362.31 70°17'52.280 N 148°25'33.233 W 5,165.00 64.89 58.70 4,134.04 260.14 2,220.93 5,961,028.59 694,381.33 70°17'52.396 N 148°25'32.669 W 5,190.00 65.06 58.75 4,144.61 271.90 2,240.29 5,961,040.84 694,400.39 70°17'52.511 N 148°25'32.105 W 5,215.00 65.41 58.64 4,155.08 283.70 2,259.69 5,961,053.12 694,419.47 70°17'52.627 N 148°25'31.539 W 5,240.00 65.30 58.67 4,165.51 295.52 2,279.09 5,961,065.44 694,438.57 70°17'52.743 N 148°25'30.973 W 5,265.00 65.01 58.56 4,176.01 307.33 2,298.46 5,961,077.74 694,457.63 70°17'52.860 N 148°25'30.409 W 5,290.00 64.52 58.48 4,186.67 319.14 2,317.75 5,961,090.04 694,476.60 70°17'52.976 N 148°25'29.846 W 5,315.00 64.19 58.35 4,197.49 330.94 2,336.94 5,961,102.33 694,495.49 70°17'53.092 N 148°25'29.287 W 5,340.00 64.18 58.23 4,208.38 342.77 2,356.09 5,961,114.64 694,514.33 70°17'53.208 N 148°25'28.728 W 5,365.00 64.03 58.13 4,219.29 354.63 2,375.20 5,961,126.98 694,533.13 70°17'53.325 N 148°25'28.171 W 5,390.00 64.14 58.15 4,230.22 366.50 2,394.30 5,961,139.34 694,551.91 70°17'53.441 N 148°25'27.614 W 5,415.00 64.19 58.12 4,241.12 378.38 2,413.41 5,961,151.70 694,570.71 70°17'53.558 N 148°25'27.057 W 5,440.00 64.21 58.09 4,252.00 390.27 2,432.52 5,961,164.08 694,589.51 70°17'53.675 N 148°25'26.500 W 5,465.00 64.43 58.10 4,262.83 402.18 2,451.64 5,961,176.47 694,608.33 70°17'53.792 N 148°25'25.942 W 5,490.00 64.74 58.11 4,273.56 414.11 2,470.82 5,961,188.89 694,627.19 70°17'53.909 N 148°25'25.383 W 5,515.00 65.36 58.36 4,284.10 426.04 2,490.09 5,961,201.31 694,646.15 70°17'54.027 N 148°25'24.821 W 5,540.00 65.53 58.24 4,294.49 437.99 2,509.43 5,961,213.75 694,665.18 70°17'54.144 N 148°25'24.257 W 5,565.00 65.91 58.33 4,304.77 449.97 2,528.82 5,961,226.22 694,684.25 70°17'54.262 N 148°25'23.692 W 5,590.00 66.32 58.38 4,314.90 461.96 2,548.28 5,961,238.70 694,703.40 70°17'54.380 N 148°25'23.125 W 5,615.00 66.55 58.45 4,324.89 473.97 2,567.80 5,961,251.20 694,722.60 70°17'54.498 N 148°25'22.556 W 5,640.00 66.67 58.78 4,334.82 485.92 2,587.39 5,961,263.64 694,741.88 70°17'54.615 N 148°25'21.984 W 5,665.00 66.62 59.71 4,344.73 497.65 2,607.11 5,961,275.88 694,761.29 70°17'54.730 N 148°25'21.409 W 5,690.00 66.81 59.95 4,354.61 509.19 2,626.97 5,961,287.92 694,780.84 70°17'54.844 N 148°25'20.831 W 5,715.00 66.13 60.41 4,364.59 520.59 2,646.85 5,961,299.83 694,800.43 70°17'54.956 N 148°25'20.251 W 5,740.00 65.54 60.62 4,374.82 531.82 2,666.71 5,961,311.56 694,819.99 70°17'55.066 N 148°25'19.672 W 5,765.00 65.37 60.60 4,385.21 542.98 2,686.52 5,961,323.22 694,839.51 70°17'55.176 N 148°25'19.094 W 5,790.00 65.19 60.58 4,395.66 554.13 2,706.30 5,961,334.87 694,859.00 70°17'55.286 N 148°25'18.517 W 5,815.00 65.15 60.49 4,406.16 565.29 2,726.06 5,961,346.53 694,878.46 70°17'55.395 N 148°25'17.941 W 5,840.00 64.83 60.39 4,416.73 576.47 2,745.76 5,961,358.21 694,897.88 70°17'55.505 N 148°25'17.367 W' 5,865.00 64.80 60.38 4,427.37 587.65 2,765.43 5,961,369.89 694,917.25 70°17'55.615 N 148°25'16.793 W 5,890.00 64.34 60.29 4,438.10 598.82 2,785.05 5,961,381.56 694,936.58 70°17'55.725 N 148°25'16.221 W 5,915.00 64.07 60.22 4,448.98 609.99 2,804.59 5,961,393.22 694,955.83 70°17'55.835 N 148°25'15.651 W 5,940.00 64.17 60.21 4,459.90 621.16 2,824.12 5,961,404.89 694,975.06 70°17'55.944 N 148°25'15.082 W 5,965.00 64.15 60.03 4,470.79 632.37 2,843.62 5,961,416.60 694,994.27 70°17'56.055 N 148°25'14.513 W 5,990.00 64.02 60.06 4,481.72 643.60 2,863.11 5,961,428.32 695,013.46 70°17'56.165 N 148°25'13.945 W 6,015.00 63.54 60.11 4,492.76 654.78 2,882.55 5,961,439.99 695,032.60 70°17'56.275 N 148°25'13.378 W 6,040.00 63.44 60.15 4,503.92 665.93 2,901.95 5,961,451.63 695,051.71 70°17'56.384 N 148°25'12.813 W 6,065.00 63.76 60.09 4,515.04 677.08 2,921.36 5,961,463.28 695,070.84 70°17'56.494 N 148°25'12.247 W 6,090.00 64.00 60.16 4,526.04 688.26 2,940.83 5,961,474.95 695,090.01 70°17'56.604 N 148°25'11.679 W 6,115.00 64.20 60.10 4,536.96 699.46 2,960.33 5,961,486.64 695,109.21 70°17'56.714 N 148°25'11.111 W 6,140.00 64.34 60.17 4,547.82 710.68 2,979.86 5,961,498.35 695,128.45 70°17'56.824 N 148°25'10.541 W 6,165.00 64.48 60.22 4,558.62 721.88 2,999.42 5,961,510.06 695,147.72 70°17'56.934 N 148°25'9.971 W 6,190.00 64.67 60.24 4,569.35 733.09 3,019.02 5,961,521.77 695,167.03 70°17'57.044 N 148°25'9.399 W 6,215.00 64.72 60.23 4,580.04 744.31 3,038.64 5,961,533.48 695,186.35 70°17'57.155 N 148°25'8.827 W 6,240.00 64.55 60.16 4,590.74 755.54 3,058.24 5,961,545.21 695,205.66 70°17'57.265 N 148°25'8.255 W 6,265.00 64.45 60.11 4,601.51 766.78 3,077.81 5,961,556.94 695,224.93 70°17'57.375 N 148°25'7.685 W 6,290.00 64.63 60.10 4,612.25 778.03 3,097.38 5,961,568.69 695,244.20 70°17'57.486 N 148°25'7.114 W 6,315.00 64.40 60.02 4,623.01 789.29 3,116.94 5,961,580.45 695,263.46 70°17'57.597 N 148°25'6.544 W 6,340.00 64.15 59.90 4,633.86 800.57 3,136.43 5,961,592.21 695,282.67 70°17'57.708 N 148°25'5.976 W 6,365.00 63.74 59.72 4,644.84 811.86 3,155.85 5,961,604.00 695,301.78 70°17'57.819 N 148°25'5.409 W 6,390.00 63.61 59.71 4,655.93 823.16 3,175.19 5,961,615.79 695,320.84 70°17'57.930 N 148°25'4.845 W 9/20/2011 3:40:37PM Page 6 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 6,415.00 63.72 59.68 4,667.02 834.47 3,194.54 5,961,627.59 695,339.88 70°17'58.041 N 148°25'4.281 W 6,440.00 63.77 59.63 4,678.08 845.79 3,213.89 5,961,639.40 695,358.93 70°17'58.152 N 148°25'3.717 W 6,465.00 64.30 59.70 4,689.03 857.15 3,233.29 5,961,651.25 695,378.04 70°17'58.264 N 148°25'3.151 W 6,490.00 64.89 59.65 4,699.75 868.55 3,252.78 5,961,663.14 695,397.23 70°17'58.376 N 148°25'2.583 W 6,515.00 65.55 59.65 4,710.23 880.02 3,272.37 5,961,675.11 695,416.52 70°17'58.488 N 148°25'2.012 W 6,540.00 65.94 59.65 4,720.50 891.53 3,292.04 5,961,687.12 695,435.88 70°17'58.602 N 148°25'1.438 W 6,565.00 65.78 59.55 4,730.72 903.08 3,311.71 5,961,699.17 695,455.26 70°17'58.715 N 148°25'0.864 W 6,590.00 65.45 59.57 4,741.04 914.61 3,331.34 5,961,711.20 695,474.59 70°17'58.828 N 148°25'0.292 W 6,615.00 65.40 59.51 4,751.44 926.14 3,350.94 5,961,723.22 695,493.88 70°17'58.942 N 148°24'59.721 W 6,640.00 65.40 59.45 4,761.85 937.68 3,370.52 5,961,735.26 695,513.16 70°17'59.055 N 148°24'59.150 W 6,665.00 65.29 59.32 4,772.28 949.25 3,390.08 5,961,747.33 695,532.41 70°17'59.169 N 148°24'58.579 W 6,690.00 64.84 59.12 4,782.82 960.86 3,409.55 5,961,759.42 695,551.58 70°17'59.283 N 148°24'58.011 W 6,715.00 64.95 59.02 4,793.42 972.49 3,428.97 5,961,771.55 695,570.70 70°17'59.397 N 148°24'57.445 W 6,740.00 65.11 59.07 4,803.98 984.15 3,448.41 5,961,783.70 695,589.83 70°17'59.512 N 148°24'56.878 W 6,765.00 65.37 58.92 4,814.45 995.84 3,467.87 5,961,795.89 695,608.98 70°17'59.627 N 148°24'56.311 W 6,790.00 65.07 58.79 4,824.93 1,007.58 3,487.29 5,961,808.12 695,628.10 70°17'59.742 N 148°24'55.744 W 6,815.00 65.04 58.92 4,835.47 1,019.31 3,506.69 5,961,820.34 695,647.19 70°17'59.857 N 148°24'55.179 W 6,840.00 65.18 59.37 4,845.99 1,030.94 3,526.16 5,961,832.46 695,666.35 70°17'59.972 N 148°24'54.611 W 6,865.00 65.96 59.93 4,856.33 1,042.44 3,545.80 5,961,844.46 695,685.69 70°18'0.085 N 148°24'54.038 W 6,890.00 66.66 60.29 4,866.38 1,053.85 3,565.65 5,961,856.37 695,705.24 70°18'0.197 N 148°24'53.459 W 6,915.00 66.72 60.45 4,876.27 1,065.20 3,585.61 5,961,868.23 695,724.90 70°18'0.308 N 148°24'52.877 W 6,940.00 66.47 60.47 4,886.20 1,076.51 3,605.57 5,961,880.04 695,744.57 70°18'0.419 N 148°24'52.295 W!! 6,965.00 66.44 60.53 4,896.19 1,087.79 3,625.52 5,961,891.84 695,764.22 70°18'0.530 N 148°24'51.714 W 6,990.00 66.52 60.52 4,906.16 1,099.07 3,645.47 5,961,903.62 695,783.88 70°18'0.641 N 148°24'51.132 W 7,015.00 66.70 60.47 4,916.09 1,110.37 3,665.44 5,961,915.43 695,803.55 70°18'0.752 N 148°24'50.549 W 7,040.00 66.62 60.29 4,925.99 1,121.72 3,685.40 5,961,927.28 695,823.21 70°18'0.864 N 148°24'49.968 W 7,065.00 66.11 60.26 4,936.02 1,133.07 3,705.29 5,961,939.14 695,842.80 70°18'0.975 N 148°24'49.388 W 7,090.00 66.12 60.19 4,946.14 1,144.43 3,725.13 5,961,950.99 695,862.34 70°18'1.087 N 148°24'48.809 W 7,115.00 66.34 60.08 4,956.21 1,155.82 3,744.97 5,961,962.89 695,881.88 70°18'1.199 N 148°24'48.230 W 7,140.00 66.42 60.02 4,966.23 1,167.26 3,764.82 5,961,974.83 695,901.43 70°18'1.311 N 148°24'47.652 W 7,165.00 66.37 59.98 4,976.24 1,178.71 3,784.65 5,961,986.78 695,920.97 70°18'1.424 N 148°24'47.073 W 7,190.00 66.27 59.99 4,986.28 1,190.16 3,804.48 5,961,998.74 695,940.49 70°18'1.536 N 148°24'46.495 W 7,215.00 66.07 60.03 4,996.38 1,201.59 3,824.29 5,962,010.67 695,960.00 70°18'1.648 N 148°24'45.917 W 7,240.00 66.35 59.98 5,006.47 1,213.03 3,844.10 5,962,022.61 695,979.51 70°18'1.761 N 148°24'45.339 W 7,265.00 66.23 59.98 5,016.52 1,224.48 3,863.92 5,962,034.56 695,999.03 70°18'1.873 N 148°24'44.762 W 7,290.00 66.25 60.10 5,026.59 1,235.91 3,883.74 5,962,046.49 696,018.56 70°18'1.986 N 148°24'44.183 W 7,315.00 65.92 60.07 5,036.73 1,247.30 3,903.55 5,962,058.39 696,038.06 70°18'2.098 N 148°24'43.606 W 7,340.00 66.15 59.97 5,046.88 1,258.72 3,923.34 5,962,070.31 696,057.55 70°18'2.210 N 148°24'43.029 W 7,365.00 66.24 60.12 5,056.97 1,270.14 3,943.16 5,962,082.23 696,077.07 70°18'2.322 N 148°24'42.451 W 7,390.00 66.16 60.00 5,067.06 1,281.56 3,962.98 5,962,094.15 696,096.59 70°18'2.434 N 148°24'41.873 W 7,415.00 65.99 60.11 5,077.20 1,292.96 3,982.78 5,962,106.06 696,116.10 70°18'2.546 N 148°24'41.295 W 7,440.00 65.77 60.11 5,087.42 1,304.34 4,002.56 5,962,117.93 696,135.58 70°18'2.658 N 148°24'40.718 W 7,465.00 66.03 60.12 5,097.62 1,315.71 4,022.35 5,962,129.81 696,155.07 70°18'2.770 N 148°24'40.141 W 7,490.00 66.04 60.14 5,107.78 1,327.08 4,042.16 5,962,141.69 696,174.58 70°18'2.882 N 148°24'39.564 W 7,515.00 65.75 60.29 5,117.99 1,338.42 4,061.96 5,962,153.52 696,194.09 70°18'2.993 N 148°24'38.986 W 7,540.00 65.53 60.33 5,128.30 1,349.70 4,081.75 5,962,165.31 696,213.57 70°18'3.104 N 148°24'38.409 W 7,565.00 65.37 60.40 5,138.69 1,360.94 4,101.51 5,962,177.05 696,233.05 70°18'3.214 N 148°24'37.833 W 7,590.00 65.58 60.37 5,149.07 1,372.18 4,121.29 5,962,188.79 696,252.52 70°18'3.325 N 148°24'37.256 W 7,615.00 65.60 60.44 5,159.40 1,383.43 4,141.08 5,962,200.54 696,272.02 70°18'3.435 N 148°24'36.679 W 7,640.00 65.55 60.54 5,169.73 1,394.64 4,160.89 5,962,212.25 696,291.54 70°18'3.545 N 148°24'36.101 W 7,665.00 65.19 60.64 5,180.15 1,405.80 4,180.69 5,962,223.91 696,311.04 70°18'3.655 N 148°24'35.524 W 7,690.00 65.31 60.53 5,190.62 1,416.95 4,200.46 5,962,235.56 696,330.53 70°18'3.765 N 148°24'34.947 W 7,715.00 65.61 60.48 5,201.00 1,428.15 4,220.26 5,962,247.26 696,350.03 70°18'3.875 N 148°24'34.370 W 7,740.00 65.48 60.42 5,211.35 1,439.37 4,240.06 5,962,258.99 696,369.53 70°18'3.985 N 148°24'33.792 W 7,765.00 65.25 60.47 5,221.77 1,450.58 4,259.82 5,962,270.70 696,389.00 70°18'4.095 N 148°24'33.216 W 9/20!2011 3:40:37PM Page 7 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 7,790.00 64.53 60.35 5,232.38 1,461.76 4,279.51 5,962,282.38 696,408.39 70°18'4.205 N 148°24'32.642 W 7,815.00 64.51 60.36 5,243.14 1,472.92 4,299.12 5,962,294.04 696,427.72 70°18'4.314 N 148°24'32.070 W, 7,840.00 64.86 60.28 5,253.83 1,484.11 4,318.76 5,962,305.72 696,447.06 70°18'4.424 N 148°24'31.497 W 7,865.00 64.63 60.45 5,264.49 1,495.29 4,338.41 5,962,317.40 696,466.42 70°18'4.534 N 148°24'30.924 W' 7,890.00 64.49 60.50 5,275.23 1,506.41 4,358.05 5,962,329.02 696,485.77 70°18'4.644 N 148°24'30.351 W 7,915.00 64.38 60.49 5,286.02 1,517.52 4,377.68 5,962,340.63 696,505.10 70°18'4.753 N 148°24'29.778 W 7,940.00 64.53 60.44 5,296.80 1,528.64 4,397.31 5,962,352.25 696,524.44 70°18'4.862 N 148°24'29.206 W1 7,965.00 64.69 60.33 5,307.52 1,539.80 4,416.94 5,962,363.90 696,543.78 70°18'4.972 N 148°24'28.633 W 7,990.00 64.55 60.26 5,318.24 1,550.99 4,436.56 5,962,375.59 696,563.10 70°18'5.082 N 148°24'28.061 W, 8,015.00 64.50 60.34 5,328.99 1,562.18 4,456.16 5,962,387.27 696,582.42 70°18'5.191 N 148°24'27.490 W 8,040.00 64.44 60.32 5,339.76 1,573.34 4,475.77 5,962,398.94 696,601.72 70°18'5.301 N 148°24'26.918 W 8,065.00 65.07 60.31 5,350.43 1,584.54 4,495.41 5,962,410.63 696,621.07 70°18'5.411 N 148°24'26.345 W 8,090.00 65.28 60.31 5,360.92 1,595.78 4,515.12 5,962,422.37 696,640.49 70°18'5.522 N 148°24'25.770 W' 8,115.00 65.50 60.37 5,371.33 1,607.03 4,534.87 5,962,434.12 696,659.95 70°18'5.632 N 148°24'25.194 W 8,140.00 65.54 60.39 5,381.69 1,618.27 4,554.65 5,962,445.87 696,679.43 70°18'5.742 N 148°24'24.617 W 8,165.00 65.91 60.40 5,391.97 1,629.53 4,574.47 5,962,457.63 696,698.95 70°18'5.853 N 148°24'24.039 W 8,190.00 66.06 60.43 5,402.15 1,640.81 4,594.32 5,962,469.41 696,718.51 70°18'5.964 N 148°24'23.460 W 8,215.00 65.97 60.39 5,412.31 1,652.08 4,614.19 5,962,481.19 696,738.08 70°18'6.075 N 148°24'22.881 W 8,240.00 65.52 60.53 5,422.58 1,663.32 4,634.02 5,962,492.93 696,757.61 70°18'6.185 N 148°24'22.302 W 8,265.00 64.84 60.55 5,433.07 1,674.48 4,653.77 5,962,504.59 696,777.08 70°18'6.295 N 148°24'21.726 W 8,290.00 64.78 60.56 5,443.71 1,685.60 4,673.47 5,962,516.21 696,796.49 70°18'6.404 N 148°24'21.152 W 8,315.00 64.73 60.63 5,454.37 1,696.71 4,693.17 5,962,527.81 696,815.89 70°18'6.513 N 148°24'20.577 W' 8,340.00 64.59 60.50 5,465.07 1,707.81 4,712.85 5,962,539.41 696,835.28 70°18'6.622 N 148°24'20.003 W 8,365.00 64.61 60.15 5,475.80 1,718.99 4,732.47 5,962,551.09 696,854.61 70°18'6.732 N 148°24'19.431 W 8,390.00 64.67 60.21 5,486.51 1,730.22 4,752.07 5,962,562.82 696,873.91 70°18'6.842 N 148°24'18.859 W 8,415.00 64.88 60.13 5,497.16 1,741.47 4,771.69 5,962,574.57 696,893.24 70°18'6.953 N 148°24'18.287 W' 8,440.00 65.02 60.21 5,507.74 1,752.74 4,791.34 5,962,586.33 696,912.59 70°18'7.064 N 148°24'17.714 W 8,465.00 64.88 60.21 5,518.33 1,763.99 4,811.00 5,962,598.08 696,931.95 70°18'7.174 N 148°24'17.141 W 8,490.00 64.49 60.34 5,529.02 1,775.20 4,830.62 5,962,609.79 696,951.28 70°18'7.284 N 148°24'16.568 W 8,515.00 64.55 60.42 5,539.77 1,786.35 4,850.24 5,962,621.44 696,970.61 70°18'7.394 N 148°24'15.996 W 8,540.00 64.68 60.59 5,550.49 1,797.47 4,869.90 5,962,633.06 696,989.97 70°18'7.503 N 148°24'15.423 W' 8,565.00 64.74 60.58 5,561.17 1,808.57 4,889.59 5,962,644.66 697,009.37 70°18'7.612 N 148°24'14.848 W 8,590.00 64.60 60.77 5,571.87 1,819.64 4,909.29 5,962,656.22 697,028.78 70°18'7.721 N 148°24'14.274 W 8,615.00 64.36 61.14 5,582.64 1,830.59 4,929.01 5,962,667.68 697,048.22 70°18'7.828 N 148°24'13.698 W 8,640.00 64.58 61.30 5,593.41 1,841.45 4,948.79 5,962,679.04 697,067.71 70°18'7.935 N 148°24'13.122 W' 8,665.00 64.85 61.56 5,604.09 1,852.26 4,968.64 5,962,690.35 697,087.27 70°18'8.041 N 148°24'12.543 W 8,690.00 64.92 61.53 5,614.70 1,863.05 4,988.54 5,962,701.64 697,106.89 70°18'8.147 N 148°24'11.962 W 8,715.00 64.83 61.47 5,625.32 1,873.85 5,008.43 5,962,712.95 697,126.50 70°18'8.253 N 148°24'11.382 W'. 8,740.00 64.29 61.23 5,636.06 1,884.67 5,028.24 5,962,724.28 697,146.03 70°18'8.360 N 148°24'10.804 W 8,765.00 64.57 61.32 5,646.85 1,895.51 5,048.02 5,962,735.61 697,165.52 70°18'8.466 N 148°24'10.227 W' 8,790.00 65.00 61.44 5,657.50 1,906.35 5,067.87 5,962,746.95 697,185.09 70°18'8.572 N 148°24'9.648 W 8,815.00 65.11 61.56 5,668.04 1,917.16 5,087.79 5,962,758.27 697,204.73 70°18'8.679 N 148°24'9.067 W 8,840.00 65.38 61.62 5,678.51 1,927.96 5,107.76 5,962,769.58 697,224.41 70°18'8.785 N 148°24'8.485 W 8,865.00 65.66 61.45 5,688.87 1,938.81 5,127.77 5,962,780.93 697,244.13 70°18'8.891 N 148°24'7.902 W 8,890.00 65.75 61.07 5,699.15 1,949.77 5,147.74 5,962,792.40 697,263.82 70°18'8.999 N 148°24'7.319 W, 8,915.00 64.98 60.34 5,709.58 1,960.88 5,167.56 5,962,804.02 697,283.35 70°18'9.108 N 148°24'6.741 W 8,940.00 64.78 59.83 5,720.19 1,972.17 5,187.18 5,962,815.80 697,302.67 70°18'9.219 N 148°24'6.168 W 8,965.00 64.71 59.94 5,730.85 1,983.52 5,206.74 5,962,827.64 697,321.93 70°18'9.330 N 148°24'5.598 W 8,990.00 64.93 59.83 5,741.49 1,994.87 5,226.31 5,962,839.49 697,341.20 70°18'9.442 N 148°24'5.027 W I 9,015.00 65.35 59.92 5,752.00 2,006.25 5,245.93 5,962,851.37 697,360.52 70°18'9.554 N 148°24'4.455 W 9,040.00 65.31 59.92 5,762.44 2,017.64 5,265.59 5,962,863.26 697,379.88 70°18'9.666 N 148°24'3.881 W 9,065.00 65.45 60.02 5,772.85 2,029.01 5,285.27 5,962,875.13 697,399.26 70°18'9.777 N 148°24'3.308 W 9,090.00 65.31 59.74 5,783.27 2,040.42 5,304.92 5,962,887.03 697,418.62 70°18'9.889 N 148°24'2.734 W 9,115.00 65.42 59.33 5,793.69 2,051.94 5,324.51 5,962,899.05 697,437.91 70°18'10.003 N 148°24'2.163 W 9,140.00 65.51 59.03 5,804.07 2,063.59 5,344.04 5,962,911.20 697,457.13 70°18'10.117 N 148°24'1.593 W 9/20/2011 3:40:37PM Page 8 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 9,165.00 65.70 58.82 5,814.39 2,075.34 5,363.54 5,962,923.44 697,476.32 70°18'10.232 N 148°24'1.024 W 9,190.00 65.47 58.66 5,824.73 2,087.16 5,383.00 5,962,935.75 697,495.47 70°18'10.349 N 148°24'0.457 W' 9,215.00 65.06 58.24 5,835.19 2,099.04 5,402.35 5,962,948.12 697,514.51 70°18'10.465 N 148°23'59.892 W 9,240.00 65.39 58.01 5,845.66 2,111.02 5,421.63 5,962,960.60 697,533.47 70°18'10.583 N 148°23'59.330 W 9,265.00 65.69 57.78 5,856.02 2,123.12 5,440.90 5,962,973.18 697,552.43 70°18'10.702 N 148°23'58.768 W 9,290.00 65.49 57.29 5,866.35 2,135.34 5,460.11 5,962,985.88 697,571.32 70°18'10.822 N 148°23'58.207 W 9,315.00 65.29 56.40 5,876.76 2,147.77 5,479.14 5,962,998.80 697,590.02 70°18'10.944 N 148°23'57.652 W 9,340.00 65.28 56.14 5,887.21 2,160.38 5,498.03 5,963,011.89 697,608.58 70°18'11.068 N 148°23'57.101 W 9,365.00 65.72 56.06 5,897.58 2,173.07 5,516.91 5,963,025.05 697,627.13 70°18'11.193 N 148°23'56.550 W 9,390.00 65.09 55.90 5,907.98 2,185.79 5,535.75 5,963,038.25 697,645.64 70°18'11.317 N 148°23'56.001 W 9,415.00 64.52 55.63 5,918.63 2,198.51 5,554.45 5,963,051.45 697,664.01 70°18'11.442 N 148°23'55.455 W 9,440.00 64.32 55.45 5,929.42 2,211.27 5,573.04 5,963,064.68 697,682.27 70°18'11.568 N 148°23'54.913 W 9,465.00 64.46 55.17 5,940.23 2,224.10 5,591.58 5,963,077.98 697,700.47 70°18'11.694 N 148°23'54.372 W 9,490.00 64.73 55.09 5,950.95 2,237.01 5,610.11 5,963,091.35 697,718.66 70°18'11.821 N 148°23'53.832 W 9,515.00 64.92 54.87 5,961.59 2,250.00 5,628.64 5,963,104.81 697,736.85 70°18'11.948 N 148°23'53.291 W 9,540.00 64.94 54.66 5,972.18 2,263.06 5,647.13 5,963,118.34 697,755.01 70°18'12.077 N 148°23'52.751 W 9,565.00 64.78 54.45 5,982.80 2,276.19 5,665.57 5,963,131.93 697,773.10 70°18'12.206 N 148°23'52.214 W 9,590.00 65.13 54.31 5,993.38 2,289.38 5,683.98 5,963,145.59 697,791.17 70°18'12.335 N 148°23'51.676 W 9,615.00 65.44 54.20 6,003.84 2,302.64 5,702.42 5,963,159.32 697,809.25 70°18'12.466 N 148°23'51.139 W 9,640.00 65.62 54.29 6,014.19 2,315.94 5,720.88 5,963,173.08 697,827.37 70°18'12.596 N 148°23'50.600 W 9,665.00 65.60 54.61 6,024.51 2,329.18 5,739.41 5,963,186.79 697,845.55 70°18'12.726 N 148°23'50.060 W 9,690.00 65.17 54.98 6,034.93 2,342.28 5,757.98 5,963,200.36 697,863.78 70°18'12.855 N 148°23'49.518 W 9,715.00 65.36 55.12 6,045.39 2,355.29 5,776.59 5,963,213.84 697,882.05 70°18'12.983 N 148°23'48.975 W 9,740.00 65.54 55.04 6,055.78 2,368.30 5,795.23 5,963,227.33 697,900.36 70°18'13.111 N 148°23'48.431 W 9,765.00 65.32 55.25 6,066.17 2,381.30 5,813.89 5,963,240.80 697,918.68 70°18'13.238 N 148°23'47.887 W 9,790.00 65.06 55.40 6,076.66 2,394.21 5,832.55 5,963,254.18 697,937.00 70°18'13.365 N 148°23'47.342 W 9,815.00 65.34 55.29 6,087.15 2,407.11 5,851.22 5,963,267.56 697,955.33 70°18'13.492 N 148°23'46.797 W 9,840.00 65.60 55.40 6,097.53 2,420.05 5,869.93 5,963,280.96 697,973.70 70°18'13.619 N 148°23'46.252 W 9,865.00 64.79 55.46 6,108.01 2,432.92 5,888.62 5,963,294.31 697,992.05 70°18'13.745 N 148°23'45.707 W' 9,890.00 64.01 55.57 6,118.82 2,445.69 5,907.20 5,963,307.55 698,010.30 70°18'13.871 N 148°23'45.164 W 9,915.00 64.06 55.49 6,129.76 2,458.41 5,925.73 5,963,320.74 698,028.50 70°18'13.996 N 148°23'44.624 W 9,940.00 64.39 55.31 6,140.63 2,471.19 5,944.26 5,963,333.99 698,046.70 70°18'14.121 N 148°23'44.083 W 9,965.00 64.78 55.05 6,151.36 2,484.09 5,962.80 5,963,347.35 698,064.90 70°18'14.248 N 148°23'43.542 W 9,990.00 64.92 54.94 6,161.99 2,497.07 5,981.34 5,963,360.80 698,083.10 70°18'14.376 N 148°23'43.002 W 10,015.00 65.14 54.66 6,172.54 2,510.13 5,999.85 5,963,374.33 698,101.27 70°18'14.504 N 148°23'42.461 W 10,040.00 65.26 54.56 6,183.03 2,523.28 6,018.36 5,963,387.95 698,119.43 70°18'14.633 N 148°23'41.921 W 10,065.00 65.95 54.39 6,193.35 2,536.50 6,036.89 5,963,401.64 698,137.62 70°18'14.763 N 148°23'41.381 W 10,090.00 66.40 54.35 6,203.45 2,549.83 6,055.47 5,963,415.44 698,155.86 70°18'14.894 N 148°23'40.839 W 10,115.00 66.51 54.37 6,213.44 2,563.18 6,074.10 5,963,429.26 698,174.13 70°18'15.025 N 148°23'40.295 W 10,140.00 66.05 54.80 6,223.49 2,576.45 6,092.75 5,963,443.00 698,192.44 70°18'15.155 N 148°23'39.751 W 10,165.00 65.55 55.13 6,233.74 2,589.54 6,111.42 5,963,456.56 698,210.77 70°18'15.284 N 148°23'39.206 W 10,190.00 65.89 55.27 6,244.02 2,602.54 6,130.14 5,963,470.04 698,229.14 70°18'15.412 N 148°23'38.660 W 10,215.00 65.74 55.44 6,254.26 2,615.51 6,148.90 5,963,483.48 698,247.57 70°18'15.539 N 148°23'38.113 W' 10,240.00 65.09 55.90 6,264.67 2,628.33 6,167.67 5,963,496.78 698,266.00 70°18'15.665 N 148°23'37.565 W 10,265.00 64.39 56.09 6,275.33 2,640.97 6,186.41 5,963,509.89 698,284.42 70°18'15.789 N 148°23'37.018 W 10,290.00 64.56 56.45 6,286.11 2,653.50 6,205.18 5,963,522.90 698,302.85 70°18'15.912 N 148°23'36.471 W 10,315.00 65.10 56.99 6,296.74 2,665.91 6,224.09 5,963,535.79 698,321.44 70°18'16.034 N 148°23'35.919 W 10,340.00 65.10 57.74 6,307.27 2,678.14 6,243.19 5,963,548.50 698,340.22 70°18'16.154 N 148°23'35.362 W 10,365.00 64.83 57.83 6,317.84 2,690.22 6,262.35 5,963,561.06 698,359.07 70°18'16.273 N 148°23'34.803 W 10,390.00 64.77 57.85 6,328.49 2,702.26 6,281.50 5,963,573.59 698,377.90 70°18'16.391 N 148°23'34.244 W 10,415.00 64.60 58.19 6,339.18 2,714.23 6,300.67 5,963,586.04 698,396.76 70°18'16.509 N 148°23'33.685 W 10,440.00 64.71 58.60 6,349.88 2,726.07 6,319.91 5,963,598.37 698,415.69 70°18'16.625 N 148°23'33.123 W 10,465.00 64.75 58.77 6,360.55 2,737.82 6,339.23 5,963,610.61 698,434.69 70°18'16.740 N 148°23'32.560 W 10,490.00 64.59 58.70 6,371.25 2,749.55 6,358.54 5,963,622.83 698,453.70 70°18'16.856 N 148°23'31.996 W 10,515.00 64.53 58.58 6,381.99 2,761.30 6,377.82 5,963,635.07 698,472.67 70°18'16.971 N 148°23'31.434 W 9!20!2011 3:40:37PM Page 9 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 10,540.00 64.78 58.55 6,392.69 2,773.08 6,397.10 5,963,647.34 698,491.64 70°18'17.087 N 148°23'30.872 W 10,565.00 64.72 58.65 6,403.35 2,784.86 6,416.40 5,963,659.61 698,510.63 70°18'17.202 N 148°23'30.309 W 10,590.00 64.68 58.45 6,414.04 2,796.65 6,435.68 5,963,671.89 698,529.61 70°18'17.318 N 148°23'29.746 W 10,615.00 64.77 58.55 6,424.71 2,808.46 6,454.96 5,963,684.19 698,548.57 70°18'17.434 N 148°23'29.184 W 10,640.00 64.77 58.42 6,435.37 2,820.29 6,474.24 5,963,696.50 698,567.54 70°18'17.550 N 148°23'28.621 W 10,665.00 65.23 58.40 6,445.93 2,832.15 6,493.54 5,963,708.86 698,586.53 70°18'17.667 N 148°23'28.058 W 10,690.00 65.44 58.34 6,456.37 2,844.07 6,512.88 5,963,721.26 698,605.56 70°18'17.784 N 148°23'27.494 W 10,715.00 65.61 58.40 6,466.72 2,856.00 6,532.25 5,963,733.68 698,624.62 70°18'17.901 N 148°23'26.928 W 10,740.00 65.72 58.49 6,477.03 2,867.92 6,551.66 5,963,746.10 698,643.72 70°18'18.018 N 148°23'26.362 WI 10,765.00 65.88 58.53 6,487.27 2,879.83 6,571.11 5,963,758.50 698,662.85 70°18'18.135 N 148°23'25.795 W 10,790.00 65.87 58.94 6,497.49 2,891.67 6,590.61 5,963,770.84 698,682.05 70°18'18.251 N 148°23'25.226 W 10,815.00 65.32 59.48 6,507.82 2,903.33 6,610.17 5,963,782.98 698,701.30 70°18'18.366 N 148°23'24.655 W 10,840.00 64.89 59.68 6,518.35 2,914.81 6,629.72 5,963,794.96 698,720.55 70°18'18.479 N 148°23'24.085 W 10,865.00 64.85 59.69 6,528.96 2,926.24 6,649.26 5,963,806.88 698,739.79 70°18'18.591 N 148°23'23.515 W 10,890.00 65.29 59.53 6,539.50 2,937.70 6,668.82 5,963,818.85 698,759.05 70°18'18.703 N 148°23'22.944 W 10,915.00 65.58 59.61 6,549.89 2,949.22 6,688.42 5,963,830.86 698,778.35 70°18'18.817 N 148°23'22.372 W 10,940.00 65.80 59.67 6,560.18 2,960.74 6,708.08 5,963,842.87 698,797.71 70°18'18.930 N 148°23'21.799 W 10,965.00 65.94 59.64 6,570.40 2,972.26 6,727.77 5,963,854.90 698,817.09 70°18'19.043 N 148°23'21.224 W 10,990.00 65.84 59.63 6,580.62 2,983.80 6,747.46 5,963,866.93 698,836.48 70°18'19.156 N 148°23'20.650 W 11,015.00 66.25 59.56 6,590.77 2,995.36 6,767.17 5,963,878.99 698,855.88 70°18'19.270 N 148°23'20.075 W 11,040.00 66.35 59.62 6,600.82 3,006.95 6,786.91 5,963,891.08 698,875.32 70°18'19.383 N 148°23'19.499 W 11,065.00 65.85 59.43 6,610.94 3,018.54 6,806.61 5,963,903.17 698,894.71 70°18'19.497 N 148°23'18.924 W 11,090.00 64.53 59.54 6,621.43 3,030.06 6,826.16 5,963,915.19 698,913.96 70°18'19.610 N 148°23'18.354 W 11,115.00 64.22 59.45 6,632.25 3,041.50 6,845.58 5,963,927.13 698,933.08 70°18'19.723 N 148°23'17.787 W 11,140.00 64.92 59.55 6,642.98 3,052.96 6,865.03 5,963,939.08 698,952.24 70°18'19.835 N 148°23'17.219 W 11,165.00 65.22 59.49 6,653.52 3,064.46 6,884.57 5,963,951.07 698,971.47 70°18'19.948 N 148°23'16.649 W 11,190.00 64.77 59.54 6,664.09 3,075.96 6,904.09 5,963,963.06 698,990.70 70°18'20.061 N 148°23'16.080 W 11,215.00 64.28 59.63 6,674.84 3,087.38 6,923.56 5,963,974.98 699,009.86 70°18'20.173 N 148°23'15.512 W 11,240.00 64.11 59.61 6,685.72 3,098.76 6,942.97 5,963,986.85 699,028.98 70°18'20.285 N 148°23'14.945 W 11,265.00 64.36 59.39 6,696.59 3,110.19 6,962.37 5,963,998.77 699,048.08 70°18'20.397 N 148°23'14.379 W 11,290.00 64.22 59.19 6,707.44 3,121.69 6,981.74 5,964,010.77 699,067.14 70°18'20.510 N 148°23'13.814 W 11,315.00 63.94 59.05 6,718.36 3,133.24 7,001.04 5,964,022.80 699,086.14 70°18'20.623 N 148°23'13.251 W 11,340.00 63.75 58.94 6,729.38 3,144.79 7,020.27 5,964,034.84 699,105.07 70°18'20.737 N 148°23'12.690 W 11,365.00 63.99 58.72 6,740.39 3,156.41 7,039.47 5,964,046.95 699,123.97 70°18'20.851 N 148°23'12.130 W 11,390.00 64.27 58.66 6,751.30 3,168.10 7,058.69 5,964,059.12 699,142.88 70°18'20.966 N 148°23'11.569 W 11,415.00 64.24 58.51 6,762.16 3,179.84 7,077.91 5,964,071.35 699,161.79 70°18'21.081 N 148°23'11.008 W 11,440.00 64.25 58.28 6,773.02 3,191.64 7,097.09 5,964,083.63 699,180.66 70°18'21.197 N 148°23'10.449 W 11,465.00 64.16 58.30 6,783.90 3,203.47 7,116.24 5,964,095.95 699,199.50 70°18'21.313 N 148°23'9.890 W 11,490.00 64.50 58.26 6,794.73 3,215.32 7,135.40 5,964,108.28 699,218.35 70°18'21.430 N 148°23'9.331 W 11,515.00 64.65 58.22 6,805.47 3,227.20 7,154.60 5,964,120.65 699,237.24 70°18'21.546 N 148°23'8.771 W 11,540.00 64.44 58.13 6,816.21 3,239.10 7,173.78 5,964,133.04 699,256.11 70°18'21.663 N 148°23'8.211 W 11,565.00 64.17 58.01 6,827.05 3,251.02 7,192.90 5,964,145.44 699,274.91 70°18'21.780 N 148°23'7.653 W 11,590.00 63.98 57.89 6,837.98 3,262.95 7,211.96 5,964,157.86 699,293.66 70°18'21.897 N 148°23'7.097 W 11,615.00 64.28 57.81 6,848.89 3,274.92 7,231.00 5,964,170.31 699,312.39 70°18'22.015 N 148°23'6.541 W 11,640.00 64.51 57.91 6,859.69 3,286.91 7,250.09 5,964,182.78 699,331.17 70°18'22.133 N 148°23'5.984 W 11,665.00 64.61 58.14 6,870.43 3,298.87 7,269.24 5,964,195.22 699,350.00 70°18'22.250 N 148°23'5.425 W1 11,690.00 64.55 58.09 6,881.16 3,310.80 7,288.41 5,964,207.64 699,368.87 70°18'22.367 N 148°23'4.866 W 11,715.00 64.92 58.07 6,891.83 3,322.75 7,307.60 5,964,220.08 699,387.74 70°18'22.484 N 148°23'4.306 W 11,740.00 65.48 58.42 6,902.32 3,334.69 7,326.90 5,964,232.51 699,406.73 70°18'22.602 N 148°23'3.743 W 11,765.00 65.68 58.69 6,912.65 3,346.57 7,346.32 5,964,244.88 699,425.84 70°18'22.718 N 148°23'3.176 W 11,790.00 65.64 58.95 6,922.96 3,358.36 7,365.81 5,964,257.16 699,445.01 70°18'22.834 N 148°23'2.608 W 11,815.00 65.39 58.79 6,933.32 3,370.12 7,385.28 5,964,269.42 699,464.18 70°18'22.950 N 148°23'2.039 W 11,840.00 65.42 58.39 6,943.73 3,381.97 7,404.69 5,964,281.76 699,483.27 70°18'23.066 N 148°23'1.473 W' 11,865.00 65.53 58.20 6,954.10 3,393.92 7,424.04 5,964,294.20 699,502.31 70°18'23.183 N 148°23'0.909 W 11,890.00 65.41 58.19 6,964.48 3,405.91 7,443.36 5,964,306.68 699,521.32 70°18'23.301 N 148°23'0.345 W 9/20/2011 3:40::37PM Page 10 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 11,915.00 64.31 58.95 6,975.10 3,417.71 7,462.67 5,964,318.97 699,540.32 70°18'23.417 N 148°22'59.781 W 11,940.00 62.76 60.11 6,986.24 3,429.06 7,481.96 5,964,330.81 699,559.31 70°18'23.528 N 148°22'59.218 W 11,965.00 62.57 60.67 6,997.72 3,440.03 7,501.27 5,964,342.27 699,578.33 70°18'23.636 N 148°22'58.655 W 11,990.00 62.49 60.63 7,009.26 3,450.91 7,520.60 5,964,353.63 699,597.38 70°18'23.743 N 148°22'58.091 W 12,015.00 61.11 60.88 7,021.07 3,461.67 7,539.83 5,964,364.88 699,616.32 70°18'23.848 N 148°22'57.530 W 12,040.00 58.92 61.17 7,033.56 3,472.16 7,558.77 5,964,375.85 699,634.99 70°18'23.951 N 148°22'56.977 W 12,065.00 58.27 61.17 7,046.59 3,482.45 7,577.46 5,964,386.62 699,653.41 70°18'24.052 N 148°22'56.432 W 12,090.00 57.49 61.20 7,059.88 3,492.65 7,596.01 5,964,397.29 699,671.70 70°18'24.153 N 148°22'55.890 W 12,115.00 55.97 61.57 7,073.60 3,502.67 7,614.36 5,964,407.77 699,689.78 70°18'24.251 N 148°22'55.355 W 12,140.00 53.67 62.27 7,088.00 3,512.28 7,632.39 5,964,417.84 699,707.56 70°18'24.345 N 148°22'54.829 W 12,165.00 53.24 62.52 7,102.89 3,521.59 7,650.19 5,964,427.60 699,725.11 70°18'24.437 N 148°22'54.310 W 12,190.00 52.72 62.82 7,117.94 3,530.76 7,667.92 5,964,437.22 699,742.60 70°18'24.527 N 148°22'53.792 W 12,215.00 51.72 63.33 7,133.25 3,539.70 7,685.54 5,964,446.61 699,759.98 70°18'24.614 N 148°22'53.278 W 12,240.00 51.27 63.50 7,148.82 3,548.46 7,703.03 5,964,455.81 699,777.25 70°18'24.700 N 148°22'52.768 W 12,265.00 51.24 63.33 7,164.46 3,557.18 7,720.47 5,964,464.98 699,794.45 70°18'24.786 N 148°22'52.259 W, 12,290.00 50.40 63.35 7,180.26 3,565.88 7,737.79 5,964,474.11 699,811.54 70°18'24.871 N 148°22'51.754 W 12,315.00 48.92 63.26 7,196.44 3,574.44 7,754.81 5,964,483.11 699,828.34 70°18'24.955 N 148°22'51.257 W 12,340.00 48.41 63.47 7,212.95 3,582.86 7,771.59 5,964,491.95 699,844.90 70°18'25.038 N 148°22'50.767 W 12,365.00 47.94 63.33 7,229.62 3,591.20 7,788.25 5,964,500.71 699,861.34 70°18'25.120 N 148°22'50.281 W 12,390.00 46.83 62.93 7,246.55 3,599.51 7,804.66 5,964,509.44 699,877.53 70°18'25.201 N 148°22'49.803 W 12,415.00 44.93 62.43 7,263.95 3,607.75 7,820.60 5,964,518.08 699,893.26 70°18'25.282 N 148°22'49.337 W 12,440.00 44.18 62.17 7,281.77 3,615.90 7,836.13 5,964,526.63 699,908.57 70°18'25.362 N 148°22'48.884 W 12,465.00 43.75 62.04 7,299.76 3,624.02 7,851.47 5,964,535.14 699,923.70 70°18'25.442 N 148°22'48.437 W 12,490.00 42.22 61.95 7,318.05 3,632.02 7,866.52 5,964,543.52 699,938.54 70°18'25.521 N 148°22'47.998 W 12,515.00 40.22 61.83 7,336.85 3,639.78 7,881.05 5,964,551.65 699,952.86 70°18'25.597 N 148°22'47.574 W' 12,540.00 39.63 61.90 7,356.03 3,647.35 7,895.20 5,964,559.58 699,966.81 70°18'25.671 N 148°22'47.161 W 12,565.00 38.97 62.03 7,375.37 3,654.79 7,909.18 5,964,567.37 699,980.59 70°18'25.744 N 148°22'46.753 W' 12,590.00 37.33 61.79 7,395.03 3,662.06 7,922.80 5,964,574.99 699,994.03 70°18'25.815 N 148°22'46.355 W 12,615.00 35.58 61.90 7,415.14 3,669.07 7,935.90 5,964,582.33 700,006.94 70°18'25.884 N 148°22'45.973 W' 12,640.00 35.08 61.89 7,435.53 3,675.88 7,948.65 5,964,589.47 700,019.51 70°18'25.951 N 148°22'45.601 W 12,665.00 34.53 62.66 7,456.06 3,682.52 7,961.28 5,964,596.42 700,031.97 70°18'26.016 N 148°22'45.233 W 12,690.00 33.51 63.49 7,476.78 3,688.86 7,973.75 5,964,603.08 700,044.27 70°18'26.078 N 148°22'44.869 W 12,715.00 32.64 63.99 7,497.73 3,694.89 7,985.99 5,964,609.42 700,056.35 70°18'26.138 N 148°22'44.512 W' 12,740.00 32.15 63.60 7,518.84 3,700.81 7,998.00 5,964,615.64 700,068.21 70°18'26.196 N 148°22'44.161 W 12,765.00 31.27 62.40 7,540.11 3,706.77 8,009.71 5,964,621.90 700,079.76 70°18'26.254 N 148°22'43.819 W 12,790.00 30.58 61.49 7,561.55 3,712.81 8,021.05 5,964,628.23 700,090.94 70°18'26.314 N 148°22'43.489 W 12,815.00 29.87 61.45 7,583.16 3,718.82 8,032.11 5,964,634.52 700,101.84 70°18'26.373 N 148°22'43.166 W 12,840.00 28.99 61.30 7,604.93 3,724.71 8,042.89 5,964,640.68 700,112.47 70°18'26.430 N 148°22'42.851 W 12,865.00 28.23 61.51 7,626.88 3,730.44 8,053.40 5,964,646.68 700,122.83 70°18'26.487 N 148°22'42.545 W 12,890.00 27.50 61.70 7,648.98 3,736.00 8,063.68 5,964,652.50 700,132.96 70°18'26.541 N 148°22'42.245 W 12,915.00 26.81 61.30 7,671.22 3,741.44 8,073.71 5,964,658.19 700,142.84 70°18'26.595 N 148°22'41.952 W 12,940.00 26.91 61.32 7,693.52 3,746.86 8,083.61 5,964,663.87 700,152.61 70°18'26.648 N 148°22'41.663 W 12,965.00 27.46 60.73 7,715.76 3,752.40 8,093.61 5,964,669.65 700,162.46 70°18'26.702 N 148°22'41.371 W 12,990.00 27.42 60.65 7,737.95 3,758.03 8,103.65 5,964,675.55 700,172.35 70°18'26.757 N 148°22'41.078 W 13,085.72 30.20 58.29 7,821.82 3,781.50 8,143.35 5,964,700.02 700,211.44 70°18'26.988 N 148°22'39.920 W 13,180.07 30.23 60.22 7,903.35 3,805.77 8,184.16 5,964,725.32 700,251.61 70°18'27.226 N 148°22'38.729 W 13,273.82 31.21 60.60 7,983.94 3,829.41 8,225.80 5,964,750.02 700,292.63 70°18'27.458 N 148°22'37.514 W 13,368.68 31.81 59.18 8,064.82 3,854.29 8,268.68 5,964,775.98 700,334.86 70°18'27.702 N 148°22'36.262 W 13,462.50 32.11 59.83 8,144.42 3,879.49 8,311.48 5,964,802.27 700,376.99 70°18'27.950 N 148°22'35.013 W 13,499.10 32.22 59.90 8,175.40 3,889.27 8,328.33 5,964,812.48 700,393.59 70°18'28.046 N 148°22'34.522 W 13,572.16 31.07 60.96 8,237.60 3,908.19 8,361.66 5,964,832.24 700,426.42 70°18'28.231 N 148°22'33.549 W 13,606.71 33.18 58.85 8,266.85 3,917.41 8,377.55 5,964,841.86 700,442.07 70°18'28.322 N 148°22'33.085 W 13,637.86 34.78 56.78 8,292.69 3,926.69 8,392.28 5,964,851.51 700,456.56 70°18'28.413 N 148°22'32.655 W 13,667.10 36.96 54.91 8,316.38 3,936.31 8,406.45 5,964,861.50 700,470.48 70°18'28.507 N 148°22'32.242 W 13,696.98 37.62 53.86 8,340.15 3,946.85 8,421.16 5,964,872.41 700,484.92 70°18'28.611 N 148°22'31.812 W 9!20/2011 3:40:37PM Page 11 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: W EDM.16-ANC Prod- H24P Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 13,729.03 38.35 54.38 8,365.41 3,958.41 8,437.15 5,964,884.38 700,500.60 70°18'28.725 N 148°22'31.346 W 13,760.17 37.68 52.88 8,389.95 3,969.78 8,452.59 5,964,896.14 700,515.74 70°18'28.836 N 148°22'30.895 W' 13,795.61 37.49 51.81 8,418.03 3,982.99 8,469.70 5,964,909.77 700,532.51 70°18'28.966 N 148°22'30.395 W i 13,826.95 39.89 54.18 8,442.49 3,994.77 8,485.35 5,964,921.95 700,547.85 70°18'29.082 N 148°22'29.939 W 13,857.28 41.90 55.82 8,465.42 4,006.15 8,501.62 5,964,933.74 700,563.82 70°18'29.193 N 148°22'29.464 W 13,890.09 44.57 58.40 8,489.32 4,018.34 8,520.49 5,964,946.41 700,582.38 70°18'29.313 N 148°22'28.913 W 13,922.89 47.11 60.76 8,512.17 4,030.24 8,540.78 5,964,958.83 700,602.36 70°18'29.430 N 148°22'28.321 W j 13,952.17 49.80 61.92 8,531.59 4,040.75 8,560.01 5,964,969.82 700,621.31 70°18'29.533 N 148°22'27.760 W 13,985.82 53.09 63.90 8,552.56 4,052.72 8,583.44 5,964,982.39 700,644.42 70°18'29.650 N 148°22'27.076 W I 14,017.47 56.95 64.70 8,570.70 4,063.96 8,606.80 5,964,994.22 700,667.49 70°18'29.761 N 148°22'26.394 W 14,048.07 61.94 65.52 8,586.25 4,075.04 8,630.70 5,965,005.91 700,691.09 70°18'29.869 N 148°22'25.697 W I 14,080.55 67.84 67.19 8,600.03 4,086.82 8,657.63 5,965,018.37 700,717.72 70°18'29.985 N 148°22'24.911 W 14,112.74 70.80 68.30 8,611.40 4,098.22 8,685.50 5,965,030.48 700,745.28 70°18'30.097 N 148°22'24.098 W' 14,142.56 73.66 69.62 8,620.50 4,108.42 8,712.01 5,965,041.35 700,771.51 70°18'30.197 N 148°22'23.325 W 14,174.04 77.17 71.65 8,628.43 4,118.51 8,740.74 5,965,052.18 700,799.98 70°18'30.296 N 148°22'22.486 W 14,206.16 79.95 74.50 8,634.80 4,127.67 8,770.86 5,965,062.10 700,829.85 70°18'30.385 N 148°22'21.608 W 14,236.63 82.56 77.42 8,639.43 4,134.97 8,800.07 5,965,070.15 700,858.86 70°18'30.457 N 148°22'20.755 W 14,270.15 84.43 80.20 8,643.23 4,141.43 8,832.73 5,965,077.44 700,891.35 70°18'30.520 N 148°22'19.802 W. 14,300.00 89.24 80.75 8,644.88 4,146.36 8,862.12 5,965,083.12 700,920.60 70°18'30.568 N 148°22'18.945 W' 14,329.66 90.35 81.11 8,644.98 4,151.04 8,891.41 5,965,088.54 700,949.76 70°18'30.614 N 148°22'18.091 W 14,360.80 89.18 80.79 8,645.11 4,155.94 8,922.16 5,965,094.23 700,980.37 70°18'30.662 N 148°22'17.194 W 14,403.52 88.68 82.21 8,645.91 4,162.25 8,964.40 5,965,101.62 701,022.43 70°18'30.723 N 148°22'15.962 W 14,501.21 87.85 84.72 8,648.87 4,173.36 9,061.40 5,965,115.21 701,119.12 70°18'30.831 N 148°22'13.132 W 14,595.12 87.54 84.45 8,652.64 4,182.22 9,154.82 5,965,126.45 701,212.27 70°18'30.917 N 148°22'10.407 W 14,691.64 86.93 86.39 8,657.30 4,189.92 9,250.91 5,965,136.60 701,308.13 70°18'30.992 N 148°22'7.605 W, 14,754.60 89.33 87.37 8,659.35 4,193.34 9,313.74 5,965,141.63 701,370.85 70°18'31.025 N 148°22'5.772 W 14,784.94 92.11 87.55 8,658.97 4,194.69 9,344.04 5,965,143.75 701,401.10 70°18'31.038 N 148°22'4.888 W 14,818.46 93.47 86.35 8,657.34 4,196.47 9,377.48 5,965,146.38 701,434.48 70°18'31.055 N 148°22'3.913 W 14,850.42 93.91 85.16 8,655.28 4,198.83 9,409.28 5,965,149.55 701,466.21 70°18'31.078 N 148°22'2.985 W 14,881.08 94.47 84.80 8,653.04 4,201.50 9,439.74 5,965,153.01 701,496.59 70°18'31.104 N 148°22'2.097 W 14,912.96 92.55 83.83 8,651.09 4,204.65 9,471.40 5,965,156.97 701,528.16 70°18'31.134 N 148°22'1.173 W I 14,945.10 92.30 82.32 8,649.73 4,208.53 9,503.28 5,965,161.65 701,559.92 70°18'31.172 N 148°22'0.244 W 14,976.63 93.79 81.05 8,648.06 4,213.08 9,534.43 5,965,167.00 701,590.95 70°18'31.216 N 148°21'59.335 W 15,008.70 93.60 80.05 8,645.99 4,218.33 9,566.00 5,965,173.06 701,622.37 70°18'31.267 N 148°21'58.414 W 15,040.65 93.66 78.38 8,643.97 4,224.30 9,597.32 5,965,179.83 701,653.53 70°18'31.326 N 148°21'57.500 W 15,071.41 92.61 79.07 8,642.29 4,230.30 9,627.44 5,965,186.60 701,683.48 70°18'31.384 N 148°21'56.621 W 15,166.59 90.01 76.88 8,640.11 4,250.13 9,720.50 5,965,208.79 701,775.99 70°18'31.578 N 148°21'53.907 W 15,261.46 90.88 78.15 8,639.37 4,270.64 9,813.12 5,965,231.66 701,868.05 70°18'31.779 N 148°21'51.205 W 15,355.96 91.06 78.01 8,637.77 4,290.15 9,905.57 5,965,253.53 701,959.97 70°18'31.969 N 148°21'48.508 W 15,451.46 90.88 74.28 8,636.16 4,313.01 9,998.26 5,965,278.76 702,052.04 70°18'32.193 N 148°21'45.803 W I 15,546.58 91.37 70.95 8,634.29 4,341.42 10,089.00 5,965,309.48 702,142.02 70°18'32.471 N 148°21'43.156 W 15,641.36 90.32 68.50 8,632.89 4,374.26 10,177.89 5,965,344.57 702,230.04 70°18'32.793 N 148°21'40.562 W 15,736.35 90.57 69.29 8,632.15 4,408.46 10,266.51 5,965,381.03 702,317.75 70°18'33.128 N 148°21'37.976 W 15,800.42 91.13 72.24 8,631.20 4,429.57 10,326.99 5,965,403.67 702,377.66 70°18'33.335 N 148°21'36.211 W 15,831.38 91.93 73.94 8,630.37 4,438.57 10,356.60 5,965,413.43 702,407.03 70°18'33.423 N 148°21'35.347 W' 15,861.33 89.64 73.51 8,629.96 4,446.96 10,385.34 5,965,422.55 702,435.55 70°18'33.505 N 148°21'34.508 W I 15,926.38 88.47 73.50 8,631.04 4,465.43 10,447.71 5,965,442.60 702,497.42 70°18'33.686 N 148°21'32.689 W 16,021.20 88.59 74.53 8,633.47 4,491.53 10,538.83 5,965,471.03 702,587.84 70°18'33.942 N 148°21'30.030 W 16,116.10 88.66 77.39 8,635.75 4,514.54 10,630.86 5,965,496.38 702,679.24 70°18'34.167 N 148°21'27.345 W' 16,211.09 92.11 79.54 8,635.11 4,533.54 10,723.91 5,965,517.75 702,771.77 70°18'34.352 N 148°21'24.630 W'. 16,305.98 93.35 82.66 8,630.59 4,548.20 10,817.53 5,965,534.80 702,864.99 70°18'34.495 N 148°21'21.899 W 16,401.01 91.74 82.92 8,626.37 4,560.11 10,911.72 5,965,549.12 702,958.83 70°18'34.611 N 148°21'19.151 W 16,495.79 91.06 82.85 8,624.05 4,571.85 11,005.74 5,965,563.25 703,052.51 70°18'34.725 N 148°21'16.409 W i 16,591.12 91.31 84.49 8,622.08 4,582.36 11,100.46 5,965,576.18 703,146.93 70°18'34.827 N 148°21'13.645 W i 16,684.13 91.74 87.80 8,619.60 4,588.61 11,193.22 5,965,584.80 703,239.49 70°18'34.887 N 148°21'10.940 W' 9/20/2011 3:40:37PM Page 12 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Sury ey 5 ; Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude i 16,781.00 91.81 87.99 8,616.60 4,592.16 11,289.97 5,965,590.83 703,336.12 70°18'34.920 N 148°21'8.118 W I 16,876.03 91.68 88.03 8,613.71 4,595.46 11,384.90 5,965,596.55 703,430.93 70°18'34.952 N 148°21'5.349 W, 16,971.23 94.03 87.71 8,608.97 4,599.00 11,479.91 5,965,602.51 703,525.81 70°18'34.985 N 148°21'2.577 W 17,003.45 95.96 87.40 8,606.16 4,600.36 11,511.98 5,965,604.70 703,557.83 70°18'34.998 N 148°21'1.642 W 17,015.55 96.63 87.59 8,604.84 4,600.89 11,523.99 5,965,605.53 703,569.83 70°18'35.003 N 148°21'1.292 W 17,080.00 96.63 87.59 8,597.40 4,603.58 11,587.96 5,965,609.86 703,633.70 70°18'35.028 N 148°20'59.426 W 1 9/20/2011 3:40:37PM Page 13 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual©56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Targets Target Name -hit/miss target Dip Angle Dip Dir. TVD +N/-S +E/-W Northing Easting -Shape (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 18-12C T5.4 0.00 0.00 8,658.29 4,211.61 9,787.54 5,965,172.00 701,844.00 70°18'31.198 N 148°21'51.953 W -actual wellpath misses target center by 55.51ft at 15223.58ft MD(8639.84 TVD,4262.69 N,9776.09 E) -Point 18-12C T10.5 0.00 0.00 8,666.29 4,381.10 10,592.19 5,965,362.00 702,644.00 70°18'32.855 N 148°21'28.478 W -actual wellpath misses target center by 124.77ft at 16046.96ft MD(8634.10 TVD,4498.23 N,10563.69 E) -Point 18-12C T12.5 0.00 0.00 8,666.29 4,540.76 10,803.35 5,965,527.00 702,851.00 70°18'34.422 N 148°21'22.313 W -actual wellpath misses target center by 35.23ft at 16289.13ft MD(8631.54 TVD,4545.97 N,10800.86 E) -Point 18-12C T5.3 0.00 0.00 8,696.29 4,057.27 8,703.18 5,964,990.00 700,764.00 70°18'29.694 N 148°22'23.584 W -actual wellpath misses target center by 91.80ft at 14140.37ft MD(8619.88 TVD,4107.68 N,8710.03 E) -Point 18-12C T10.6 0.00 0.00 8,666.29 4,500.07 11,494.58 5,965,504.00 703,543.00 70°18'34.012 N 148°21'2.154 W -actual wellpath misses target center by 115.09ft at 16976.63ft MD(8608.57 TVD,4599.21 N, 11485.29 E) -Point 18-12C T10.3 0.00 0.00 8,677.29 4,182.69 9,314.62 5,965,131.00 701,372.00 70°18'30.920 N 148°22'5.747 W -actual wellpath misses target center by 20.88ft at 14754.78ft MD(8659.36 TVD,4193.35 N,9313.92 E) -Point 18-12C T5.2 0.00 0.00 8,697.29 4,001.59 8,142.54 5,964,920.00 700,205.00 70°18'29.152 N 148°22'39.936 W -actual wellpath misses target center by 426.89ft at 13838.25ft MD(8451.12 TVD,3999.01 N,8491.30 E) -Point 18-12C T12.1 0.00 0.00 7,646.29 3,796.55 7,906.21 5,964,709.00 699,974.00 70°18'27.138 N 148°22'46.835 W -actual wellpath misses target center by 159.76ft at 12833.98ft MD(7599.67 TVD,3723.30 N,8040.32 E) -Point 18-12C T12.7 0.00 0.00 8,616.29 4,706.26 12,116.09 5,965,726.00 704,159.00 70°18'36.030 N 148°20'44.017 W -actual wellpath misses target center by 538.35ft at 17080.00ft MD(8597.40 TVD,4603.58 N, 11587.96 E) -Point 18-12C Geo Poly 0.00 0.00 8,688.29 3,796.55 7,906.21 5,964,709.00 699,974.00 70°18'27.138 N 148°22'46.835 W -actual wellpath misses target center by 638.82ft at 13667.31ft MD(8316.55 TVD,3936.38 N,8406.55 E) -Polygon Point 1 8,688.29 4,166.28 8,508.90 5,965,094.00 700,567.00 Point2 8,688.29 4,250.58 9,202.32 5,965,196.00 701,258.00 Point 3 8,688.29 4,379.32 9,957.90 5,965,344.00 702,010.00 Point 4 8,688.29 4,576.71 10,493.15 5,965,555.00 702,540.00 Point 5 8,688.29 4,675.17 11,454.04 5,965,678.00 703,498.00 Point 6 8,688.29 4,812.65 12,219.85 5,965,835.00 704,260.00 Point 7 8,688.29 4,652.69 12,215.76 5,965,675.00 704,260.00 Point8 8,688.29 4,515.22 11,449.95 5,965,518.00 703,498.00 Point 9 8,688.29 4,416.75 10,489.06 5,965,395.00 702,540.00 Point 10 8,688.29 4,219.36 9,953.81 5,965,184.00 702,010.00 Point 11 8,688.29 4,090.63 9,198.23 5,965,036.00 701,258.00 Point 12 8,688.29 4,006.33 8,504.80 5,964,934.00 700,567.00 Point 13 8,688.29 4,166.28 8,508.90 5,965,094.00 700,567.00 Point 14 8,688.29 3,796.55 7,906.21 5,964,709.00 699,974.00 18-12C 75.1 0.00 0.00 7,990.29 3,802.50 7,165.07 5,964,696.00 699,233.00 70°18'27.204 N 148°23'8.449 W -actual wellpath misses target center by 961.48ft at 12803.44ft MD(7573.15 TVD,3716.06 N,8027.03 E) -Point 18-12C GeoPoly large 0.00 0.00 8,688.29 4,122.28 8,742.86 5,965,056.00 700,802.00 70°18'30.333 N 148°22'22.424 W', -actual wellpath misses target center by 57.93ft at 14188.98ft MD(8631.58 TVD,4122.95 N,8754.65 E) -Polygon Point 1 8,688.29 4,516.42 8,508.85 5,965,444.00 700,558.00 Point 2 8,688.29 4,600.72 9,202.27 5,965,546.00 701,249.00 Point 3 8,688.29 4,729.45 9,957.85 5,965,694.00 702,001.00 Point 4 8,688.29 4,926.84 10,493.11 5,965,905.00 702,531.00 9!20/2011 3:40:37PM Page 14 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Welibore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Point 5 8,688.29 5,025.31 11,453.99 5,966,028.00 703,489.00 Point 6 8,688.29 5,162.78 12,219.80 5,966,185.00 704,251.00 Point 7 8,688.29 4,652.69 12,215.76 5,965,675.00 704,260.00 Point 8 8,688.29 4,515.21 11,449.95 5,965,518.00 703,498.00 Point 9 8,688.29 4,416.75 10,489.06 5,965,395.00 702,540.00 Point 10 8,688.29 4,219.35 9,953.81 5,965,184.00 702,010.00 Point 11 8,688.29 4,090.62 9,198.23 5,965,036.00 701,258.00 Point 12 8,688.29 4,006.32 8,504.80 5,964,934.00 700,567.00 Point 13 8,688.29 4,166.28 8,508.89 5,965,094.00 700,567.00 18-12C T10.4 0.00 0.00 8,666.29 4,290.72 9,940.63 5,965,255.00 701,995.00 70°18'31.975 N 148°21'47.485 W -actual wellpath misses target center by 29.99ft at 15389.65ft MD(8637.17 TVD,4297.53 N,9938.44 E) -Point 18-12C T10.2 0.00 0.00 8,688.29 4,122.28 8,742.86 5,965,056.00 700,802.00 70°18'30.333 N 148°22'22.424 W -actual wellpath misses target center by 57.93ft at 14188.98ft MD(8631.58 TVD,4122.95 N,8754.65 E) -Point 18-12C T5.5 0.00 0.00 8,621.29 4,411.02 11,182.18 5,965,407.00 703,233.00 70°18'33.141 N 148°21'11.269 W -actual wellpath misses target center by 176.94ft at 16661.14ft MD(8620.28 TVD,4587.56 N, 11170.26 E) -Point 18-12C T10.1 0.00 0.00 7,646.29 4,120.90 8,288.65 5,965,043.00 700,348.00 70°18'30.324 N 148°22'35.671 W -actual wellpath misses target center by 408.90ft at 13075.38ft MD(7812.87 TVD,3778.78 N,8138.94 E) -Point 18-12C T12.6 0.00 0.00 8,666.29 4,624.20 11,686.83 5,965,633.00 703,732.00 70°18'35.230 N 148°20'56.541 W -actual wellpath misses target center by 122.26ft at 17080.00ft MD(8597.40 TVD,4603.58 N, 11587.96 E) -Point Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (in) (in) 2,839.29 2,706.93 13 3/8" 13.375 17.500 13,539.00 8,209.27 DRILLING LINER 1 7.000 8.500 9202011 3:40:37PM Page 15 COMPASS 2003.16 Build 73 Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Site: PB DS 18 MD Reference: 18-12C Actual @ 56.29ft(D25(36.34AG+19.95BF Well: 18-12 North Reference: True Wellbore: 18-12C Survey Calculation Method: Minimum Curvature Design: 18-12C Database: EDM.16-ANC Prod-WH24P Formations Measured Vertical Dip Depth Depth Dip Direction 1 (ft) (ft) Name Lithology (0) (0) 3,430.79 3,201.34 SV4 SILTSTONE 4,137.79 3,685.04 SV3 SILTSTONE 4,531.79 3,866.36 SV2 SILTSTONE 5,516.79 4,284.85 SV1 SILTSTONE 6,781.79 4,821.47 UG4 Sand/Shale/Coal 6,885.79 4,864.70 UG4A Sand/Shale/Coal 7,423.79 5,080.78 UG3 Sand/Shale/Coal 8,667.00 5,604.94 UG1 Sand/Shale/Coal 10,047.00 6,185.95 WS2 SAND(COARSE),SILTY 10,559.00 6,400.79 WS1 SAND(COARSE),SILTY 11,002.00 6,585.51 CM3 SILTSTONE 12,142.00 7,089.18 CM2 SILTSTONE 12,782.00 7,554.67 CM1 SILTSTONE 13,297.00 8,003.75 HRZ SHALE 13,536.00 8,206.72 PUT RIVER SAND(MED),CHERTY 13,551.00 8,219.50 SHUBLIK LIMESTONE,SHALY 13,586.00 8,249.40 TSAD SAND 13,699.00 8,341.75 TZ3 CONGLOMERATE 13,864.00 8,470.40 TZ2 Sand/Conglomerate 14,006.00 8,564.33 TZ1 SAND Checked By: Approved By: Date: 9/20/2011 3:40:37PM Page 16 COMPASS 2003.16 Build 73 : (\,—..>' ' . 11 Alp P 1j 741, ��• 1 i i tip.r� 19 �. LPC a 4 a 10• V DS-2 t\(1 4 C—PAD 0,-5 9• \`1111, I 16 ..,„,\ 7 I a■ 1 7• VICINITY MAP 23• NTS 6■ ■16 27• •26 ' 5■ ■1S � •25 t C17 4■ ■14 ham■24 . OF A� ,S{}/. 'p[! .q i 17• !V 2. X12 "�,:49� %.* 19■ ■21 ' .. ; °..,,..fill 1■ ■11 i � (lead i 0. ■: chard . Allison 10:08 ,. � 30■r -te- j sstGA.\' ,..- . ' ' Os' SURVEYOR'S CERTIFICATE I HEREBY CERTIFY THAT I AM PROPERLY REGISTERED AND LICENSED TO PRACTICE LAND SURVEYING IN THE STATE OF ALASKA AND THAT THIS AS—BUILT REPRESENTS A SURVEY LEGEND MADE BY ME OR UNDER MY DIRECT SUPERVISION AND THAT ALL • AS—BUILT WELL CORRECT AS OFDJUULYE 52011.2011. • EXISTING WELL NOTES: 1. DATE OF SURVEY: JUNE 21, & JULY 15, 2011. 2. REFERENCE FIELD BOOK: NS11-34 PGs. 61-66 &NS11-50 PG's 04-06. GRAPHIC SCALE 3. COORDINATES ARE DATUM IS NAD27, ALASKA STATE PLANE ZONE 4 AND 0 200 400 B00 LOCAL PLANT BASED ON OPERATOR MONUMENT DS-18A. 4. GEODETIC COORDINATES ARE NAD 27. ( IN FEET ) 5. PAD SCALE FACTOR EQUALS 0.9999415. 1 inch =400 ft. 6. VERTICAL DATUM IS MLLW BASED ON OPERATOR MONUMENT DS-18A. LOCATED WITHIN PROTRACTED SEC. 19, T. 11 N.. R. 15 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC TOP OF SECTION NO. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD)LANDING RING OFFSETS 18-12 Y=5,960,712.15 N= 1,279.94 70'14'49.844" 70.2971790' 17.04' 4113'FSL X= 692,167.80 E= 974.96 148'26'37.412" 148.4437255' 4552'FEL F. Robert °RA"`' KNH D�( lENtsE �� bp jr� oA�811/11 I °RF / RBI1 DS18 02 MA DRILL SITE 18 SH`E` a___ �__- a Cs .. ----- AS—BUILT WELL LOCATION III 8/1 i/T+ISSUED F INFORMATION KWH S ••�•••`•••w•• s:R&E 1 OF 1 .,a, I" _ 400' WELL 18-12 NO DATE REVISION O. CII. AsMOML wAr UM BOP closure on DS18-12c Page 1 of 1 Regg, James B (DOA) ja -)) Z t a cc( Z o From: AK, D&C Base Operations Superintendent [AKDCBaseOperationsSuperintendent @bp.com] Sent: Friday, September 09, 2011 3:05 AM To: DOA AOGCC Prudhoe Bay Cc: Daniel, Ryan; Egbejimba, Uchenna J; Kilfoyle, Jeffery A; Mountford, Carl F; Schultz, Mikel; Rossberg, R Steven; Staudinger, Garret; Dinger, Michael E Subject: BOP closure on DS18-12c Attachments: DS18-12 BOP usage.doc Guys, Here is an update on the BOP closure on DS-18-12c. We are ready to open up the annular and go back to drilling. <<DS18-12 BOP usage.doc>> Alan Madsen GPB Rotary Drilling Superintendent 907-306-4997 cell 907-659-4618 North Slope office 907-564-5780 Anchorage office TPB-u 44/4 444/04.14 1.1444/4.w;.11 Ge uda Gy.goo 444 44,1/. 9/9/2011 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: Alan Madsen Wellsite Leader Name: Garrett Staudinger Contact Number: 907-659-4618 Contact Number: 659-5856 Traction Number: 3938371 Well Location/Name & Rig Name: DS18-12q- Nt(cNt 06 Permit To Drill (PTD) Number: 210-092 Date and Time of Incident: 9-8-11 03:20 Original Scope of Work: Drilled out 7 inch shoe track plus 20 ft of new hole to perform FIT. Operational Description Leading up to Well Control Event: Well had been circulated clean after Drilling the 20 ft. of new hole for the FIT and a flow check was being performed. BOPE Used and Reason: Well was flowing a slight amount of mud during the flow check. After 1 bbls. It was shut in to check pressures. The casing built to 270 over a period of time. It was suspected to be breathing from the Shublik formation. Well was circulated out using the drillers method and additional bleed back test performed to confirm no additional mud wt. was required to continue drilling ahead. Is a BOPE Test Required after use ( Yes / No): Yes If no, why? 24 hour notice required to NS AOGCC Inspectors prior to testing BOPE components. Plan Forward: Bleed pressures to zero. Open annular and drill ahead after conducting exhale tests. 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 Ryan Daniel 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 .. 71:-, ,3 L\ t L SEAN PARNELL,GOVERNOR L - J [_, 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 18-12C BP Exploration (Alaska), Inc. Permit No: 210-092 (revised) Surface Location: 1166' FNL, 403' FWL, SEC. 19, T11N, R15E, UM Bottomhole Location: 1751' FNL, 2977' FEL, SEC. 16, T11N, R15E, 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. i'ce ,_ 4 0 1 Jo.,� . sr., an om -. sioner DATED this/3 day of July, 2011. cc: Department of Fish & Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) . .L STATE OF ALASKA „...d , I u L 0 7 7(11, ALA OIL AND GAS CONSERVATION COM! ION s-/A// ` PERMIT TO DRILL R lA*CM*.C�filfT fission 20 AAC 25.005 Revised:Well now to be Sidetracked by Rotary Rig 1a.Type wo Well Class: ®Development Oil ❑Service-Winj ❑Single one • • • . - I • ••OS-■ • : ❑ Drill ®Redrill atigraphic Test ❑Development Gas ❑Service-Supply ❑Multiple Zone ❑ Coalbed Gas ❑Gas Hydrates ❑ Re-Entry ❑ Exploratory ❑Service-WAG ❑Service-Disp ❑Shale Gas 2. Operator Name: 5.Bond: ® Blanket ❑Single Well 11. Well Name and Number: BP Exploration(Alaska)Inc. Bond No. 6194193 PBU 18-12C 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 17686' ND 8618' Prudhoe Bay Field/Prudhoe 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Bay Oil Pool Surface: ADL 028321 &028322 1166'FNL,403'FWL,SEC. 19,T11N, R15E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 2330'FNL, 1072'FEL,SEC. 17,T11N,R15E, UM July 20,2011 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 1751'FNL,2977'FEL,SEC. 16,T11N, R15E, UM 2560 19700' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: 47 feet 15.Distance to Nearest Well Open Surface: x- 692168 y-5960712 Zone- ASP4 GL Elevation above MSL: 17.5 feet to Same Pool: 3650' 16.Deviated Wells: Kickoff Depth: 3250 feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 97 degrees Down hole: 4084 Surface: 3291 18. Casing Program: Specifications 1 Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling Length MD ND MD ND (including stage data) 8-1/2" _ 7" 26# L-80 VAtii-°P 10280' 3130' 2951' 13410' 8176' 232 sx Class'G' , 6-1/8" 4-1/2" 12.6# L-80 TC!! 4420' 13266' 8736' 17686' 8618' .485 sx 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): 13914' 8731' None 13878' 8730' None Casing Length Size Cement Volume MD ND Conductor/Structural 110' 20" 1610#Poleset 110' 110' Surface 2830' 13-3/8" 2500 sx Coldset III.400 sx Coldset II 2830' 2697' Intermediate 9935' 9-5/8" 500 sx Class'G'. 300 sx Coldset I 9935' 8303' Production Liner 2192' 7" 450 sx Class'G' 9638'-11830' 8153'-8737' Liner 157' 4-1/2" Uncemented 11707'-11864' 8727'-8740' Liner 2-3/8" 2286' 60 sx Class'G' 11628'-13914' 8721'-8731' Perforation Depth MD(ft): 12575'-13780' Perforation Depth ND(ft): 8760'-8728' 20.Attachments: ❑ Property Plat ®BOP Sketch ®Drilling Program ❑Time vs Depth Plot ❑Shallow Hazard Analysis ®Diverter Sketch ❑Seabed Report ®Drilling Fluid Program 1E120 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Mel Rixse,564-5620 _ Printed Name J•vj'j Egb:'imba Title Engineering Team Leader � /^/ Prepared By Name/Number: Signature- ��,� _ �� ,`hone 564-5859 Date 7 b/1/ Elizabeth Barker,564-5674 ' Commission Use Only r Permit To Dri1i✓. /!," AP f umber: Permit Aporovai�ar See cover letter for Number: .' _!9r, 50-029-21615-03-00 I 1 (9 1 (o I other requirements Conditions of Approval: If box is checked,well may not be used to explore for,test,or produce coalbed methane,gas hydrates,or gas contained shales: P , Other: A/ 3560 ps` -13D/ ie s T L Samples Req'd: es IdNo Mud Log Req'd: 0 Yes 6.H2S Measures: Yes ❑No Directional Survey Req'd: CJ Yes ❑No tf Z S-00/9-s-;-- Anft4-4-4 77—e-gi (ii... .,- 17 Date -13-1/ ill APPROVED BY THE COMMISSION e/Zt ,COMMISSIONER Form 10-401 Revised 07/2009 This permit is valid for 24 months fro A oval 1 AAC 2-� Submit In Duplicate 7l/e( OR1OA „iozi; I by 0 To: Alaska Oil & Gas Conservation Commission From: Mel Rixse, Operations Drilling Engineer Date: July 6, 2011 Re: Prudhoe Bay, Request for Permit to Drill 18-12C A permit to drill is requested to sidetrack well 18-12B. The primary target for the producing well will be the Ivishak Zone 1. Rig Doyon 25 is expected to begin drilling this well on July 20th, 2011. The sidetrack plan for the 18-12C includes the following: - P&A 18-12B per Sundry Number: 311-206 - Whipstock exit out of the 9-5/8" casing a.,) - Drill 8-1/2" intermediate hole to top of the Ivishak •1.►� - Run and cement a 7" liner with 15.8 ppg glass G tail cement. wt - Drill 6-1/8" horizontal production hole - Run and cement a 4-1/2" L-80 liner - Run 4-1/2" 13Cr-80 production tubing. 5i.A"djmd- Please note the following well summary as detailed on the next few pages. Sincerely, Mel Rixse Operations Drilling Engineer BP Exploration (Alaska), Inc. 18-12C Permit to Drill Application Page 1 Planned Well Summary Well Horizontal g Tar et Well 18-12C Sidetrack Ivishak Zn1 Type Producer Objective Estimated Start July 20`", 2011 Time to Complete: 35.6 Date: Surface Northing Easting Offsets TRS Location 5,960,712' 692,168' 1167' FNL 402' FWL 11N, 15E, 19 Northing Easting Offsets TRS Target Location 5,965,056 700,802 2330' FNL 1072' FEL 11N, 15E, 17 Bottom Northing Easting Offsets TRS Location 5,965,726 704,159 1751' FNL /2977' FEL 11N, 15E, 16 Planned 3,250' MD / 2,996' TVD Planned TD: 17,686'MD / 8,617' TVD KOP: Rig: Doyon 25 GL/RT: 17.5'/34.3' RTE: 51.8' Directional — Halliburton 18-12B (WP16) Proposal KOP: I 3,250' MD Maximum Hole Angle: -64.6° in the 8-1/2" intermediate section (-33°@ KOP) -99° in the 6-1/8" production section Close Approach Wells: 18-12C fails major risk in the production section against well L2-18A and exploration well-1-03. L2-18A will have a downhole tubing plug, be shut in, and fluid packed. T-03 is abandoned with a cement plug above the reservoir. Survey Program: MWD Standard + IFR+ Multi Station Nearest Property Line: 19,700' North Nearest Well within Pool: 3650' (18-33) Contacts Name Phone# E-mail Drilling Engineer Mel Rixse 564-5620 Mel.Rixse@bp.com Geologist Doug Stoner 564-5652 Doug.Stoner @bp.com Pad Engineer Alice Kaminski 564-5676 Alice.Kaminski @bp.com 18-12C Permit to Drill Application Page 2 Formation Markers 18-12B (Based 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 -3160 20' No 8.4 SV3 -3632 20' No 8.4 SV2 -3817 20' 8.4 SV7 -4222 20' No 8.4 UG4 -4757 20' No 8.4 UG3 -4970 20' No 9.3 0.20 UG1 -5526 20' No 9.4 0.20 WS2 -6109 20' No 9.3 WS1 -6294 20' No 9.3 CM3 -6466 20' No 9.6 CM2 -7015 20' No 10.1 CM1 -7502 20' No 10.2 THRZ -7934 20' No 10.2 BHRZ/Put River -8176 20' No 7.96 ✓ LCU/Shublik -8181 20' No 7.93 TSAD -8221 20' No 7.88 TCGL -8333 20' No 7.88 BCGL -8385 20' Yes 7.88 0.40 23SB -8465 20' Yes 7.88 0.40 22TS -8480 20' Yes 7.88 0.40 21TS -8506 20' Yes 7.88 0.40 TZ1 B -8546 20' Yes 7.88 0.40 TDF -8620 20' Yes 7.88 0.40 BSAD -8644 20' Yes 7.88 0.40 18-12C 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-'/Z" 7" 26.0# L-80 TOP 7,240 5,410 10,280' 3130'/2952' 13,410'/8,176' HC 6.125" 4 %" 12.6# L-80 TCII ' 8,430 7,500 4,420' 13,266'/8,052' 17,686'/8,618' Tubing 4 'h" 12.6# 13Cr-80 TOP 8,430 7,500 13,266' Surface 13,266'/8,052' Mud Program Whipstock Millin -THRZ Mud Properties: LSND 8.5" hole section Depth Interval Density(ppg) PV YP API FL HTHP FL MBT PH . 3,250'-13,200' 9.6 10-25 22-32 6.0—8.0 N/C <20 9.0-10.0 THRZ-Put River Mud Properties: LSND I 8-1/2" hole section Depth Interval Density(ppg) PV YP API FL HTHP FL MBT PH ' 13,200'-13,410' 10.1 - 10.2 10-25 22-30 4.0—6.0 <10 <20 9.0-10.0 Production Mud Properties: N-VIS Reservoir Drill-in Fluid I 6.125" hole section . Depth Interval Density(ppg) PV YP LSVR API Fl pH MBT 13,416'-17,686' 8.6 6-12 22-28 >20,000 6.0-8.0 9.0-9.5 <4 Logging Program 8-1/2" Intermediate: _ Drilling: DIR/GR/Res/PWD/ + Mud Logging Open Hole: None Cased Hole: None 6" Production: Drilling: Dir/GR/Resl PWD/Neu/Density + Mud Logging Open Hole: MDT Cased Hole: None 18-12C Permit to Drill Application Page 4 Cement Program Casing Size: 7" 26#, L-80,VAM TOP HC Intermediate Liner Basis: Lead: None Tail: 1,500' above the shoe Tail TOC: 11,766' Total Cement Spacer 30 bbls of Viscosified Spacer weighted to 10.4 ppg (Mud Push II) Volume: Lead N _ Tail 48 b 15.8 lb/gal Class G+adds— 1.16 cuft/sk Temp BHST= 168° F, BHCT TBD by Schlumberger Z 3 Z se Casing Size: 4.5" 12.6#, L-80,TCII Production Liner Basis: Lead: None Tail: 150' above the top of the liner Tail TOC: 13,266' Total Cement Spacer 25 bbls of Viscosified Spacer weighted to 11.5 ppg (Mud Push II) Volume: Tail 01 blP 15.8 lb/gal Class G +adds— 1.17 cuft/sk 6/ "{g5 s x Temp BHST= 182° F, BHCT TBD by Schlumberger Intermediate Interval Maximum anticipated BHP 4,084 psi @ 7,934'TVDss(9.9 ppg EMW) Maximum surface pressure 3,291 psi (based upon pressure at 7934-0.10 psi/ft gas gradient to surface) Kick tolerance A LOT of 12.4-13.9 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 3,374 psi @ 8,181' TVDss (7.93 ppg EMW) Maximum surface pressure 2,556 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 8.6 ppg N-VIS Reservoir Drill-in Fluid/seawater 8.5 and 6.8 ppg Diesel fluids (freeze protect) 18-12C 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 18-21 is approximately 55' away 18-12. Close Approach Shut-in Wells: The 18-12C well path passes major risk for all nearby wells, with the exception of the L2-18A lateral and the exploration well T-03. L2-18A will be fluid packed with a deep set plug above perforations. T-03 is abandonded with a cement plug. Hydrogen Sulfide Standard Operating Procedures for H2S precautions should be followed at all times. DS18 wells are expected to have H2S levels in the 0 to 100 ppm. Recent H25 data from the pad is as follows: Date of Well Name H2S Level Reading Parent Well 18-12B NA NA #1 Closest SHL Well H2S Level 18-21A 10 ppm 4/24/2010 #2 Closest SHL Well H2S Level 18-13C NA NA #1 Closest BHL Well H2S Level L2-18A NA NA #2 Closest BHL Well H2S Level 18-33A 10 ppm 2/23/2005 #3 Closest BHL Well H2S Level 18-16B 7 ppm 1/29/2011 Max.Recorded H2S on Pad/Facility 18-18B 70 ppm 5/22/2010 Other Relevant H2S Data DS 18 is not an H2S pad.No wells>100 ppm H2S Faults The planned 18-12C well plan does not intersect any mapped faults. In the "Fault Coordinates for Mapping" section Fault#1 is a southern bounding fault and Fault#2 is a western bounding fault. The - planned 18-12C well plan crosses over top of the mapped intersection of Fault#1 and Fault#2. 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 18-12C 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. 18-12C Permit to Drill Application Page 6 Drilling Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control The Ivishak (Shublik interval) in this fault block is expected to be 7.93 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 No faults are expected to be crossed while drilling 18-12C III. Kick Tolerance/Integrity Testing Test Point Test Depth Kick EMW(Ib/gal) Tolerance Test type ›t- 9-%" window 20-ft minimum from the 9-%" 50bbl 13.9 window LOT 9-%" window 20-ft minimum from the 9-%" 25bb1 12.4 window LOT 7" shoe 20-ft minimum from the 7" Infinite 10.0 shoe FIT IV. Hydrogen Sulfide Standard Operating Procedures for H2S should be followed at all times. DS 18 is not an H2S pad. No wells on DS 18 with H2S >100 ppm. Date of Well Name H2S Level Reading Parent Well 18-12B NA NA #1 Closest SHL Well H2S Level 18-21A 10 ppm 4/24/2010 #2 Closest SHL Well H2S Level 18-13C NA NA #1 Closest BHL Well H2S Level L2-18A NA NA #2 Closest BHL Well H2S Level 18-33A 10 ppm 2/23/2005 #3 Closest BHL Well 1-12S Level 18-16B 7 ppm 1/29/2011 Max. Recorded 112S on Pad/Facility 18-18B 70 ppm 5/22/2010 Other Relevant H2S Data DS 18 is not an H2S pad.No wells>100 ppm H2S VII. Anti-Collision Issues The 18-12C well path passes major risk for all nearby wells, with the exception of the L2-18A lateral and the exploration well T-03. L2-18A will be fluid packed with a deep set plug just above perforations. T-03 is abandonded with a cement plug. CONSULT THE DS18 PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION 18-12C Permit to Drill Application Page 7 18-12C Operational Summary Planned Pre-Rig Abandonment and Preparation Operations: 1. F MIT-IA to 3500 psi, MIT-T to 2500 psi. 2. W Perform diagnostic testing to determine location of IC packoff leak location, i.e. upper seals or lower seals. 3. W Function test LDS tubing, replace if damaged. 4. S Drift tubing with 3.5"drift to 9700' MD. 5. E Punch holes in 3-1/2" production tubing from 9600' MD to 9605' MD. Ensure circulation to IA. Set CIBP at 9650' 6. F Perform fullbore cement P&A and plan to leave TOC in tubing and IA at 8400' MD. Pump 84 bbls of 15.8 ppg Class G cement down the TBG up IA. - 7. S Drift to TOC and to -3600' MD for jet cutter. Pressure test cement to 2500 psi. 8. E Jet cut 3-1/2"tubing -3600' MD (-2' below the nearest tubing collar). , 9. F CMIT-TxIA to 3500 psi. 10. D Bleed all casing and annulus pressures to zero psi. 11. V Set BPV 12. 0 Bleed gas lift and production flowlines down to zero and blind flange 13. 0 Remove S-Riser, Remove wellhouse, level pad-Complete Proposed Procedure: 1. MIRU Doyon 25. 2. MIT-OA 2000 psi for 30 minutes (begin monitoring OA). 3. RU lubricator and pull BPV. Circulate out freeze protection and displace to seawater. 4. Set a TWC and test from above to 3500 psi for 30 minutes and from below to 1000 psi. 5. Nipple down tree. Nipple up and test BOPE to 3,500psi,250 psi low. Pull TWC. 6. RU and pull the 3-1/2" tubing w/single 1/4" control line from the pre-rig jet cut at -3600' MD. A single 1/4" hydraulic control line should be run to the SSSV at 2268' MD. 7. PU 5" DP. 8. Pick up 9-5/8"casing scraper. RIH to tubing stub at-3600' MD, ensure casing is clean. POOH. LD scraper assembly. 9. RU E-line, run a 9-5/8" EZSV w/GR/CCL for 47#casing. Set the EZSV at-3,400' MD (spaced out so whipstock face does not lie across 9-5/8" casing collar w/ bottom of whipstock face near 3266' P MD). Rig Down E-line. 10. Pressure test the EZSV to 3500 psi for 10 minutes and chart./ 11. Change 9-5/8" casing packoffs. Pressure test packoff to 5000 psi for 30 min. 12. NU BOPE and test. 13. PU 9-5/8"whipstock, bottom trip anchor and 8.5"window milling assembly(to include full gauge string mills). RIH to the top of the EZSV. Orient and set the whipstock. Swap the well over to 9.6 ppg fresh water LSND milling fluid. 14. Mill a window in the 9-5/8" casing from approximately 3250'-3266' MD' plus 20' of formation. 15. Perform a FIT/LOT. POOH for drilling BHA. 16. MU an 8-1/2" drilling BHA with DIR/GR/RES. PU 90 joints of 4" DP. RIH w 5" DP. Kick off and drill 8-1/2" intermediate interval to 7" casing point at the top of the HRZ. Weight up to 10.1 ppg. Drill to -- base of the Put River. CBU, wiper trip to shoe, circulate well clean and POOH. 17. Change upper rams to 7"and test. ✓ 18. Run and partially cement a 7", 26#, L-80 drilling liner in the 8-1/2"wellbore. Set hanger/ liner top r) packer and displace cement with mud. POOH laying down 5" DP. Stand back 4" DP. �� 19. Test 7" liner to 3500 psi for 30 minutes. Chart the same. -- p1 20. M/U a 6-%8" DIR/GR/RES/NEU/DEN drilling assembly. P/U additional 4" drill pipe as required to TD. 21. RIH to top of the float collar. a'o-p92 22. Displace the well to 8.6 ppg N-VIS Reservoir Drill-in Fluid • 23. Drill out shoe and 20' of new formation and perform an FIT. • 24. Drill build section with pilot hole, per directional proposal to Zone 1. . 18-12C Permit to Drill Application Page 8 25. MU a 6-1/8" BHA with PDC bit and DIR/GR/RES/NEU/DEN. RIH and drill ahead, per directional proposal and rig site geologist, to TD. 26. CBU at TD. Back ream to shoe, MAD passing as required by geologist. Open circ sub and ' circulate the well clean at the shoe and POOH. 27. Run and a cement a 4-1/2", 12.6#, L-80, TC-II liner from TD to 150' inside the 7" shoe. Set the • liner top packer and displace the well to seawater. 28. After cement reaches —1000 psi compressive strength, pressure test well to 3500 psi for 30 minutes ' and chart. 29. RIH with DPC perf guns. Perf intervals will be determined from LWD logs. Plan to perforate overbalance. POOH, LD DP and perf guns. 30. Run the 4-1/2", 12.6#, 13Cr-80 completion tying into the 4-1/2" liner top. 31. Reverse circulate in corrosion inhibited brine. 32. 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. 33. Shear valve and confirm circulation. • 34. Set and test a TWC to 1000psi. - 35. ND BOPE. NU and test the tree to 5,000 psi (tree will be changed with 4-1/16") • 36. Pull TWC. Freeze protect the well to 2,200'TVD. 37. Set a BPV. 38. RDMO. Post-Riq Work: 1. Pull BPV. 2. Pull ball and rod/RHC plug. Set generic GLV design. 3. RU ASRC test separator. Flow well per production engineer. 4. Install wellhouse, instrumentation, and flowlines. 18-12C Permit to Drill Application Page 9 TREE- 3-1/8"FMC SAFETY NOTES: FHL/TIW HBBP PACKERS HAVE WELLHEAD- FMC w REDUCED TEST PRESSURE LIMITS IN SOME CASES. ACTUATOR= AXELSON 8 2 B CONTACT WIE(x5102)PRIOR TO PRESSURE TESTING. KB.ELEV= 47' WELL ANGLE>70°@ 10097'&>90°@ 12183'. BF.ELEV= 23.8' ORIGINAL 4-1/2"LNR FROM PARENT WELL NOT KOP= 1200' SHOWN ON DIAGRAM Max Angle= 98 @ 12705' Datum MD= WA 0 I 2268' H3-1/2"CA MCO TRDP-1 A TRSV.ID=2.812" I N Datum D= 8800'SS 13-3/8"CSG.72#.L-80.ID=12.347" H 2830' , GAS LIFT MANDRELS STI MD I TV D I DEV I TYPE I V LV I LATCH'PORT' DATE I Minimum ID=1.745"@ 11628' 1 3790 3503 34 CA-MMG-211 DMY RK 0 03/20/10 SEAL ASSY(LNR TOP PKR) I9-5/8"X 7"TIW LNR HGR H 9631' I • 9399' H3-1/2"OTIS X NIP.ID-2.813" I 9-518"CSG,47#.L-80,ID-8.681" H 9935 ?`�tS I TBG PUNCH(09/13/10) H 11396'-11401'1 • ,`//+"" 11584'CTUH3-112'HES CIBP(09/13/10)I i =V- 11600' •3-1/2"CIBP(08/27/10)I 11607' FISH:11.5'SL TOOLSTRING(08/26/10) I I.-4 --I I 11628' H BKR LNR TOP PKR 8 SEAL ASSY,ID=1.745" 1 0111 10 11644' H2.70"BKR DEPLOY SLV,ID-2.250" I 11 �1 11 1 -'I 11644' EST TOP OF CEMENT LNR I 1 1 11 11 11718" H TIW OVERSHOT ASSY.ID-4.75"(BEHIND PIPE) I 3-1/2"TBG-PC,9.3#,N-80,.0087 bpi,ID=2.992" —I 11718' 11 .,1 11 7411 11720' I—ITIW POLISHED RISER W/2.813"X-PROFILE(BEHIND PIPE) ►1 j'L 11730' BTM OF TIN OVERSHOT ASSY(BEHIND PIPE) I ca 0 1 1 11732' H7"X 4-1/2"TNV SS PKR,ID-3.00"(BEHIND PIPE I 11 .1 1/ P1 17"LNR 29#.L-80,.0371 bpf.ID-6.184" H 11830' MILLED WINDOW(18-12B) 11864'-11871' 'MECHANICAL WHIPSTOCK(06/18/05) H 11862' RA TAG 11870' 11111111111 1111• 1. 1111- ,1 ,1 12382' H MARKER w/PUP JNT I PERFORATION SUMMARY REF LOG: MWD/NGP GR/ROP ON 06/28/05 /, I' ` TIE-IN LOG: GEOLOGY PDC LOG 1 1 ANGLE AT TOP PERF: 86"@ 11575' I 1 S. Note:Refer to Production DB for historical pert data 13809' —CLEANOUT BY SIZE SPF INTERVAL Opn/Sgz DATE 4. RIG(06/30/05) 41:L 2-1/2" 6 11575-11580 0 09/15/10 2-1/2" 6 11590-11595 C 08/29/10 111114/ 1.9/16" 6 12560-13120 C 07/03/05 1-9/16" 6 13190-13290 C 07/03/05 ��%i %ij 1-9/16" 6 13400-13630 C 07/03/05 j�,/.;`` 1-9/16" 6 13700-13780 C 07/03/05 PBTD —1 13878' '.'tI 12-3/8"LNR,4.74.L-80.STL..0036 bpf,ID=1.92" H 13914' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/23/86 ORIGINAL COM PLETION 09/04/10 PBS/SV SET CIBP/TBG PCH(08/29/10) WELL: 18-12B 11/08/97 CTD SIDETRACK 09/22/10 HJW/PJC TBG PUNCH/GBP(09/13/10) PERMT No:R2050730 07/04/05 NORDIC1 CTD SIDETRACK 09/22/10 JKD/PJC PERFORATE(08/29&09/15/10 API No: 50-029-21615-02 07/07/05 RMWPJC GLV CO 11;19/10 CSR/PJC PERF/CIPB CORRECTION SEC 19,T11N,R15E1166'FNL&402'FWL 01/01/06 GJBiTLH DRLG DRA FT CORRECTIONS 03/21/10 SWC/SV GLV C/0(03!20/10) BP Exploration(Alaska) 18-12C Permit to Drill Application Page 10 TREE= 3-1/8"FMC 1 8-1 2C -0 WELLHEAD= FMC ACTUATOR= AXELSON KB.aEV= 47' Proposed RST SAFETY NOTES: BF.aEV= 23.8' KOP= 1200' Max Angle= ?? Datum MD= WA -2200 H4-1/2"SS GA' NIP,ID=3.813" Datum TV D= 8800'SS GAS LIFT MANDRELS 0 ST MID TVD DEV TYPE VLV LATCH PORT DATE 113-3/8"CSG,72#,L-80, ID=12.347" ---1 2830' I 3 , 2 ri , • 1 I9-5/8"x 7"Baker Liner tie Back and Liner top packer H 3130' Minimum ID = 3.725" @ 13,175' 4:f:::::+ L5/8" WHIPSTOCK @ 3250 SWASSWAVO 33 Lower SV5 0 ♦*♦*'*♦*,� 65 @4438' •4' 9-5/8"CSG,47#,L-80,ID=8.681" -H 9935' I 13110' H4-1/2"X NIP ID= 3.813'" El ►: 13130' H7"x 4-1/2"PKR I I 13156' H4-1/2"X NIP, ID=3 813" I I 13175' Ha_1/7"XN NIP, ID=3.725" I 14-1/2"TBG, 12.6#, 13Cr-80,.0152 bpf, ID=3.958" H 13250' I--- I TOP OF4-1/2"LNR — -13276' I Aker Flexlo:. +anger/HRD ZXP Packer H 13260' 17"LNR,26#,L-80 H -13,410' - A 30° Put River or Shublik @ -13484' P6iFORATION SUMMARY REF LOG: MWD/NGP GR/ROP ON 06/28/05 TIE-IN LOG: GEOLOGY PDC LOG ° ANGLE ATTOPPERF: ??°@??' 90 @ -14255` Note:Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 0 I _NR, 12.6#, L-80 I-- -17686' I . 97 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/23/86 ORIGINAL COMPLETION 09/04/10 PBS/SV SET CIBP/TBG PCH(08/29/10) WELL: 18-12 11/08/97 CTD SIDETRACK 09/22/10 HJW/PJC TBG PUNCH/CIBP(09/13/10) PERMIT No: 07/04/05 NORDICI CTD SIDETRACK 09/22/10 JKD/PJC PERFORATE(08/29&09/15/10 API No: 50-029-21615-02 07/07/05 RMH/PJC GLV CIO 11/19/10 CSR/PJC PERF/CIPB CORRECTION SEC 19,T11 N, R15E, 1166'FNL&402'FWL 01/01/06 GJB/TLH DRLG DRAFT CORRECTIONS 04/18/11 MSE PROPOSED RST 03/21/10 SWC/SV GLV C/O(03/20/10) BP Exploration(Alaska) BP - Alaska Prudhoe Bay PB DS 18 18-12 Plan 18-12C Plan: 18-12C WP 16 Standard Proposal Report 21 June, 2011 HALLIBURTON Sperry Drilling Services 7 O N M In O^ CO m m cow Y Z 2 in-nv ,GNN G bb ,fm Q U a °m mmi�i� 0' jam.- es CL gS S U�� °o zr a < E¢c mm 2M Q aa°r°a� ++ f75 C7++ v°_, DD u N d C7 C7 0 3 °°-w g01,2°'� J - O �n in N L^ (0m I°-2022 ¢ �NHw¢ a o c y ..��oD S0' N g ° e m m;m UI 2G N A 0 LR a S �N, ZMrn2In2 Z 0000 .�-i "a p o`n'o 0 } c cp rn fn in mM M a .4 Z.wg > m ¢a o-oI�° U �Onm M p VI �: N O Jva mo NWfnW IQm - m m N 000 U o 3 m NM, 00 O U O h rcc in 3� :: ao OU P aUi Q n �=`-0 m ��r U �'. ou°�° ^ i0 A C A O ,N�•., - u- mNNm -J J 0O re > 00INN m [� m 3 ¢ -.. 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Z o C W m U �� m U U Z 3m ` • 0 W a W I1II z Ef! 1 0 0(/� �tp YU )(n y 0 fmfm� w w_o2m z a— N >> a COMM 0 C M W M o °° Z..Om 3 0 mw nw`E ��vU N m�M l0 ��,m 0..Q. 1 3 En 110 c Q = N 0 CV el V CO U 0 9> T o�I , -'y3.0cl, mill 0 osM� ° > 0 >zNm a 3 J L o 0 0 0 0 0 0 0 0 0 0 FNmm Q L Cl)N N 0 un M 0 u)N O 0 N-W 0 N N m O O 0 N r 0 = a (Lin 0051)*ea ieo!Pan anil • Sperry Drilling HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska ND Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Project Prudhoe Bay,North Slope,UNITED STATES Map System: US State Plane 1927(Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927(NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Site PB DS 18,TR-11-14 -) Site Position: Northing: 5,959,213.15 ft Latitude: 70.29 From: Map Easting: 691,583.44ft Longitude: -148.45 Position Uncertainty: 0.00 ft Slot Radius: 0" Grid Convergence: 1.46 ° Well 18-12,18-12 Well Position +N/-S 0.00 ft Northing: 5,960,712.23 ft Latitude: 70.30 +E/-W 0.00 ft Easting: 692,168.21 ft Longitude: -148.44 Position Uncertainty 0.00 ft Wellhead Elevation: 23.80 ft Ground Level: 17.50 ft Wellbore Plan 18-12C Magnetics Model Name Sample Date Declination Dip Angle Field Strength (1 11 (nT) BGGM2010 8/30/2011 21.53 81.02 57,660 Design 18-12C WP 16 Audit Notes: Version: Phase: PLAN Tie On Depth: 3,250.00 Vertical Section: Depth From(ND) +N!-S +E/-W Direction lit) (ft) 1ft) (') 40.00 0.00 0.00 68.77 6/21/2011 11:07:28AM Page 2 COMPASS 2003.16 Build 73 Sperry Drilling HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska TVD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Plan Sections Measured Vertical ND Dogleg Build Turn Depth Inclination Azimuth Depth System +N/-S +El-W Rate Rate Rate Tool Face (ft) (°) (°) (ft) ft (ft) (ft) (°/100ft) 0100ft) (°1100ft) (°) 3,250.00 32.78 110.92 3,053.51 2,996.01 -294.90 817.93 0.00 0.00 0.00 0.00 3,270.00 34.04 107.20 3,070.21 3,012.71 -298.48 828.34 12.00 6.28 -18.58 -60.00 4,438.01 64.64 58.02 3,847.92 3,790.42 -104.80 1,633.29 4.00 2.62 -4.21 -69.94 11,904.05 64.64 58.02 7,046.20 6,988.70 3,468.47 7,355.58 0.00 0.00 0.00 0.00 12,796.93 29.00 61.50 7,647.50 7,590.00 3,796.09 7,905.90 4.00 -3.99 0.39 177.11 12,846.93 29.00 61.50 7,691.23 7,633.73 3,807.66 7,927.20 0.00 0.00 0.00 0.00 12,891.44 30.78 61.65 7,729.82 7,672.32 3,818.21 7,946.70 4.00 4.00 0.34 2.51 13,723.41 30.78 61.65 8,444.61 8,387.11 4,020.37 8,321.39 0.00 0.00 0.00 0.00 14,246.86 91.10 83.97 8,689.50 8,632.00 4,121.82 8,742.55 12.00 11.52 4.26 25.27 14,821.92 91.10 83.97 8,678.50 8,621.00 4,182.23 9,314.31 0.00 0.00 0.00 0.00 14,893.82 91.16 81.09 8,677.08 8,619.58 4,191.57 9,385.58 4.00 0.09 -4.00 -88.64 15,274.02 91.16 81.09 8,669.37 8,611.87 4,250.42 9,761.12 0.00 0.00 0.00 0.00 15,457.72 90.00 73.84 8,667.50 8,610.00 4,290.26 9,940.31 4.00 -0.63 -3.95 -99.06 15,521.40 90.00 71.29 8,667.50 8,610.00 4,309.34 10,001.06 4.00 0.00 -4.00 -90.00 16,025.22 90.00 71.29 8,667.50 8,610.00 4,470.95 10,478.25 0.00 0.00 0.00 0.00 16,358.07 90.00 84.60 8,667.50 8,610.00 4,540.30 10,803.04 4.00 0.00 4.00 90.00 16,393.05 88.92 85.50 8,667.83 8,610.33 4,543.32 10,837.89 4.00 -3.08 2.55 140.42 16,999.45 88.92 85.50 8,679.24 8,621.74 4,590.93 11,442.31 0.00 0.00 0.00 0.00 17,246.44 96.53 79.18 8,667.50 8,610.00 4,623.74 11,686.51 4.00 3.08 -2.56 -39.58 17,686.33 96.53 79.18 8,617.50 8,560.00 4,705.80 12,115.78 0.00 0.00 0.00 0.00 6/21/2011 11:07:28AM Page 3 COMPASS 2003.16 Build 73 • . Sperry Drilling HALL I B U R TO N Standard Proposal Report Database: .Sperry EDM.16 PRD Local Coordinate Reference: Well 18-12 Company: BP-Alaska ND Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +Nl-S +EI-W Northing Easting DLS Vert Section (ft) (°) (°) (ft) ft (ft) (ft) (ft) (ft) 2,996.01 3,250.00 32.78 110.92 3,053.51 2,996.01 -294.90 817.93 5,960,438.36 692,993.37 0.00 655.67 KOP DLS 12.00 TFO-60.00 3250.00'MD 3,270.00 34.04 107.20 3,070.21 3,012.71 -298.48 828.34 5,960,435.04 693,003.86 12.00 664.07 Begin Directional DLS 4.00 3270.00'MD 3,300.00 34.46 105.21 3,095.01 3,037.51 -303.19 844.55 5,960,430.74 693,020.18 4.00 677.48 3,400.00 36.11 98.90 3,176.66 3,119.16 -315.18 900.99 5,960,420.21 693,076.91 4.00 725.75 3,450.86 37.07 95.88 3,217.50 3,160.00 -319.07 931.04 5,960,417.09 693,107.05 4.00 752.36 SV4 3,500.00 38.06 93.10 3,256.45 3,198.95 -321.41 960.90 5,960,415.51 693,136.96 4.00 779.35 3,600.00 40.27 87.82 3,334.00 3,276.50 -321.85 1,024.01 5,960,416.68 693,200.05 4.00 838.01 3,700.00 42.70 83.02 3,408.92 3,351.42 -316.50 1,089.99 5,960,423.72 693,265.88 4.00 901.46 3,800.00 45.32 78.66 3,480.86 3,423.36 -305.39 1,158.54 5,960,436.58 693,334.11 4.00 969.37 3,900.00 48.08 74.69 3,549.45 3,491.95 -288.57 1,229.30 5,960,455.20 693,404.42 4.00 1,041.43 4,000.00 50.97 71.05 3,614.37 3,556.87 -266.12 1,301.95 5,960,479.50 693,476.46 4.00 1,117.28 4,100.00 53.96 67.70 3,675.29 3,617.79 -238.15 1,376.12 5,960,509.35 693,549.89 4.00 1,196.54 4,124.37 54.71 66.93 3,689.50 3,632.00 -230.52 1,394.39 5,960,517.45 693,567.95 4.00 1,216.33 SV3 4,200.00 57.04 64.60 3,731.93 3,674.43 -204.81 1,451.46 5,960,544.61 693,624.35 4.00 1,278.84 4,300.00 60.19 61.72 3,784.01 3,726.51 -166.24 1,527.60 5,960,585.11 693,699.47 4.00 1,363.78 4,400.00 63.40 59.01 3,831.27 3,773.77 -122.64 1,604.16 5,960,630.65 693,774.89 4.00 1,450.93 4,438.01 64.64 58.02 3,847.92 3,790.42 -104.80 1,633.29 5,960,649.23 693,803.55 4.00 1,484.54 End Directional 4438.01'MD 4,500.00 64.64 58.02 3,874.48 3,816.98 -75.13 1,680.81 5,960,680.11 693,850.29 0.00 1,539.58 4,500.06 64.64 58.02 3,874.50 3,817.00 -75.10 1,680.85 5,960,680.13 693,850.33 0.00 1,539.63 SV2 4,600.00 64.64 58.02 3,917.31 3,859.81 -27.26 1,757.45 5,960,729.91 693,925.68 0.00 1,628.35 4,700.00 64.64 58.02 3,960.15 3,902.65 20.60 1,834.10 5,960,779.71 694,001.07 0.00 1,717.12 4,800.00 64.64 58.02 4,002.99 3,945.49 68.46 1,910.74 5,960,829.51 694,076.46 0.00 1,805.90 4,900.00 64.64 58.02 4,045.83 3,988.33 116.32 1,987.38 5,960,879.31 694,151.85 0.00 1,894.67 5,000.00 64.64 58.02 4,088.66 4,031.16 164.18 2,064.03 5,960,929.11 694,227.25 0.00 1,983.44 5,100.00 64.64 58.02 4,131.50 4,074.00 212.04 2,140.67 5,960,978.92 694,302.64 0.00 2,072.21 5,200.00 64.64 58.02 4,174.34 4,116.84 259.90 2,217.32 5,961,028.72 694,378.03 0.00 2,160.98 5,300.00 64.64 58.02 4,217.18 4,159.68 307.76 2,293.96 5,961,078.52 694,453.42 0.00 2,249.76 5,400.00 64.64 58.02 4,260.01 4,202.51 355.62 2,370.60 5,961,128.32 694,528.81 0.00 2,338.53 5,445.49 64.64 58.02 4,279.50 4,222.00 377.39 2,405.47 5,961,150.97 694,563.10 0.00 2,378.91 SV1 5,500.00 64.64 58.02 4,302.85 4,245.35 403.48 2,447.25 5,961,178.12 694,604.20 0.00 2,427.30 5,600.00 64.64 58.02 4,345.69 4,288.19 451.34 2,523.89 5,961,227.92 694,679.59 0.00 2,516.07 5,700.00 64.64 58.02 4,388.53 4,331.03 499.20 2,600.54 5,961,277.72 694,754.98 0.00 2,604.85 5,800.00 64.64 58.02 4,431.37 4,373.87 547.06 2,677.18 5,961,327.53 694,830.37 0.00 2,693.62 5,900.00 64.64 58.02 4,474.20 4,416.70 594.92 2,753.83 5,961,377.33 694,905.76 0.00 2,782.39 6,000.00 64.64 58.02 4,517.04 4,459.54 642.78 2,830.47 5,961,427.13 694,981.16 0.00 2,871.16 6,100.00 64.64 58.02 4,559.88 4,502.38 690.64 2,907.11 5,961,476.93 695,056.55 0.00 2,959.94 6,200.00 64.64 58.02 4,602.72 4,545.22 738.50 2,983.76 5,961,526.73 695,131.94 0.00 3,048.71 6,300.00 64.64 58.02 4,645.55 4,588.05 786.36 3,060.40 5,961,576.53 695,207.33 0.00 3,137.48 6/21/2011 11:07:28AM Page 4 COMPASS 2003.16 Build 73 Sperry Drilling H A LL I B U RTO N Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska TVD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (*) (°) (ft) ft (ft) (ft) (ft) (ft) 4,630.89 6,400.00 64.64 58.02 4,688.39 4,630.89 834.22 3,137.05 5,961,626.34 695,282.72 0.00 3,226.25 6,500.00 64.64 58.02 4,731.23 4,673.73 882.08 3,213.69 5,961,676.14 695,358.11 0.00 3,315.03 6,600.00 64.64 58.02 4,774.07 4,716.57 929.94 3,290.34 5,961,725.94 695,433.50 0.00 3,403.80 6,694.39 64.64 58.02 4,814.50 4,757.00 975.11 3,362.68 5,961,772.94 695,504.66 0.00 3,487.59 UG4 6,700.00 64.64 58.02 4,816.90 4,759.40 977.80 3,366.98 5,961,775.74 695,508.89 0.00 3,492.57 6,800.00 64.64 58.02 4,859.74 4,802.24 1,025.66 3,443.62 5,961,825.54 695,584.28 0.00 3,581.34 6,900.00 64.64 58.02 4,902.58 4,845.08 1,073.52 3,520.27 5,961,875.34 695,659.67 0.00 3,670.12 7,000.00 64.64 58.02 4,945.42 4,887.92 1,121.38 3,596.91 5,961,925.14 695,735.06 0.00 3,758.89 7,100.00 64.64 58.02 4,988.25 4,930.75 1,169.24 3,673.56 5,961,974.95 695,810.46 0.00 3,847.66 7,191.61 64.64 58.02 5,027.50 4,970.00 1,213.09 3,743.77 5,962,020.57 695,879.52 0.00 3,928.99 UG3 7,200.00 64.64 58.02 5,031.09 4,973.59 1,217.10 3,750.20 5,962,024.75 695,885.85 0.00 3,936.43 7,300.00 64.64 58.02 5,073.93 5,016.43 1,264.96 3,826.84 5,962,074.55 695,961.24 0.00 4,025.21 7,400.00 64.64 58.02 5,116.77 5,059.27 1,312.82 3,903.49 5,962,124.35 696,036.63 0.00 4,113.98 7,500.00 64.64 58.02 5,159.61 5,102.11 1,360.68 3,980.13 5,962,174.15 696,112.02 0.00 4,202.75 7,600.00 64.64 58.02 5,202.44 5,144.94 1,408.54 4,056.78 5,962,223.95 696,187.41 0.00 4,291.52 7,700.00 64.64 58.02 5,245.28 5,187.78 1,456.40 4,133.42 5,962,273.75 696,262.80 0.00 4,380.29 7,800.00 64.64 58.02 5,288.12 5,230.62 1,504.26 4,210.07 5,962,323.56 696,338.19 0.00 4,469.07 7,900.00 64.64 58.02 5,330.96 5,273.46 1,552.12 4,286.71 5,962,373.36 696,413.58 0.00 4,557.84 8,000.00 64.64 58.02 5,373.79 5,316.29 1,599.98 4,363.35 5,962,423.16 696,488.97 0.00 4,646.61 8,100.00 64.64 58.02 5,416.63 5,359.13 1,647.84 4,440.00 5,962,472.96 696,564.37 0.00 4,735.38 8,200.00 64.64 58.02 5,459.47 5,401.97 1,695.70 4,516.64 5,962,522.76 696,639.76 0.00 4,824.16 8,300.00 64.64 58.02 5,502.31 5,444.81 1,743.56 4,593.29 5,962,572.56 696,715.15 0.00 4,912.93 8,400.00 64.64 58.02 5,545.14 5,487.64 1,791.42 4,669.93 5,962,622.37 696,790.54 0.00 5,001.70 8,489.54 64.64 58.02 5,583.50 5,526.00 1,834.28 4,738.56 5,962,666.96 696,858.04 0.00 5,081.19 UG1 8,500.00 64.64 58.02 5,587.98 5,530.48 1,839.28 4,746.58 5,962,672.17 696,865.93 0.00 5,090.47 8,600.00 64.64 58.02 5,630.82 5,573.32 1,887.15 4,823.22 5,962,721.97 696,941.32 0.00 5,179.25 8,700.00 64.64 58.02 5,673.66 5,616.16 1,935.01 4,899.86 5,962,771.77 697,016.71 0.00 5,268.02 8,800.00 64.64 58.02 5,716.49 5,658.99 1,982.87 4,976.51 5,962,821.57 697,092.10 0.00 5,356.79 8,900.00 64.64 58.02 5,759.33 5,701.83 2,030.73 5,053.15 5,962,871.37 697,167.49 0.00 5,445.56 9,000.00 64.64 58.02 5,802.17 5,744.67 2,078.59 5,129.80 5,962,921.17 697,242.88 0.00 5,534.34 9,100.00 64.64 58.02 5,845.01 5,787.51 2,126.45 5,206.44 5,962,970.98 697,318.27 0.00 5,623.11 9,200.00 64.64 58.02 5,887.85 5,830.35 2,174.31 5,283.08 5,963,020.78 697,393.67 0.00 5,711.88 9,300.00 64.64 58.02 5,930.68 5,873.18 2,222.17 5,359.73 5,963,070.58 697,469.06 0.00 5,800.65 9,400.00 64.64 58.02 5,973.52 5,916.02 2,270.03 5,436.37 5,963,120.38 697,544.45 0.00 5,889.43 9,500.00 64.64 58.02 6,016.36 5,958.86 2,317.89 5,513.02 5,963,170.18 697,619.84 0.00 5,978.20 9,600.00 64.64 58.02 6,059.20 6,001.70 2,365.75 5,589.66 5,963,219.98 697,695.23 0.00 6,066.97 9,700.00 64.64 58.02 6,102.03 6,044.53 2,413.61 5,666.31 5,963,269.79 697,770.62 0.00 6,155.74 9,800.00 64.64 58.02 6,144.87 6,087.37 2,461.47 5,742.95 5,963,319.59 697,846.01 0.00 6,244.52 9,850.49 64.64 58.02 6,166.50 6,109.00 2,485.63 5,781.65 5,963,344.73 697,884.08 0.00 6,289.34 WS2 9,900.00 64.64 58.02 6,187.71 6,130.21 2,509.33 5,819.59 5,963,369.39 697,921.40 0.00 6,333.29 10,000.00 64.64 58.02 6,230.55 6,173.05 2,557.19 5,896.24 5,963,419.19 697,996.79 0.00 6,422.06 6/21/2011 11:07:28AM Page 5 COMPASS 2003.16 Build 73 Sperry Drilling la P rY 9 H ALLI B U RTO N Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska ND Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (°► (°) (ft) ft (ft) (ft) (ft) (ft) 6,215.88 10,100.00 64.64 58.02 6,273.38 6,215.88 2,605.05 5,972.88 5,963,468.99 698,072.18 0.00 6,510.83 10,200.00 64.64 58.02 6,316.22 6,258.72 2,652.91 6,049.53 5,963,518.79 698,147.58 0.00 6,599.61 10,282.35 64.64 58.02 6,351.50 6,294.00 2,692.32 6,112.65 5,963,559.81 698,209.66 0.00 6,672.71 WS1 10,300.00 64.64 58.02 6,359.06 6,301.56 2,700.77 6,126.17 5,963,568.59 698,222.97 0.00 6,688.38 10,400.00 64.64 58.02 6,401.90 6,344.40 2,748.63 6,202.81 5,963,618.40 698,298.36 0.00 6,777.15 10,500.00 64.64 58.02 6,444.73 6,387.23 2,796.49 6,279.46 5,963,668.20 698,373.75 0.00 6,865.92 10,600.00 64.64 58.02 6,487.57 6,430.07 2,844.35 6,356.10 5,963,718.00 698,449.14 0.00 6,954.69 10,683.87 64.64 58.02 6,523.50 6,466.00 2,884.49 6,420.38 5,963,759.77 698,512.37 0.00 7,029.15 CM3 10,700.00 64.64 58.02 6,530.41 6,472.91 2,892.21 6,432.75 5,963,767.80 698,524.53 0.00 7,043.47 10,800.00 64.64 58.02 6,573.25 6,515.75 2,940.07 6,509.39 5,963,817.60 698,599.92 0.00 7,132.24 10,900.00 64.64 58.02 6,616.09 6,558.59 2,987.93 6,586.04 5,963,867.40 698,675.31 0.00 7,221.01 11,000.00 64.64 58.02 6,658.92 6,601.42 3,035.79 6,662.68 5,963,917.21 698,750.70 0.00 7,309.78 11,100.00 64.64 58.02 6,701.76 6,644.26 3,083.65 6,739.32 5,963,967.01 698,826.09 0.00 7,398.56 11,200.00 64.64 58.02 6,744.60 6,687.10 3,131.51 6,815.97 5,964,016.81 698,901.48 0.00 7,487.33 11,300.00 64.64 58.02 6,787.44 6,729.94 3,179.37 6,892.61 5,964,066.61 698,976.88 0.00 7,576.10 11,400.00 64.64 58.02 6,830.27 6,772.77 3,227.23 6,969.26 5,964,116.41 699,052.27 0.00 7,664.87 11,500.00 64.64 58.02 6,873.11 6,815.61 3,275.09 7,045.90 5,964,166.21 699,127.66 0.00 7,753.65 11,600.00 64.64 58.02 6,915.95 6,858.45 3,322.95 7,122.55 5,964,216.01 699,203.05 0.00 7,842.42 11,700.00 64.64 58.02 6,958.79 6,901.29 3,370.81 7,199.19 5,964,265.82 699,278.44 0.00 7,931.19 11,800.00 64.64 58.02 7,001.62 6,944.12 3,418.67 7,275.83 5,964,315.62 699,353.83 0.00 8,019.96 11,900.00 64.64 58.02 7,044.46 6,986.96 3,466.53 7,352.48 5,964,365.42 699,429.22 0.00 8,108.74 11,904.05 64.64 58.02 7,046.20 6,988.70 3,468.47 7,355.58 5,964,367.44 699,432.28 0.00 8,112.33 Begin Directional DLS 4.00 11904.05'PAD 11,962.92 62.28 58.15 7,072.50 7,015.00 3,496.31 7,400.28 5,964,396.41 699,476.25 4.00 8,164.08 CM2 12,000.00 60.80 58.24 7,090.17 7,032.67 3,513.49 7,427.99 5,964,414.29 699,503.50 4.00 8,196.12 12,100.00 56.81 58.49 7,141.95 7,084.45 3,558.36 7,500.80 5,964,461.00 699,575.14 4.00 8,280.24 12,200.00 52.81 58.76 7,199.57 7,142.07 3,600.90 7,570.56 5,964,505.31 699,643.78 4.00 8,360.67 12,300.00 48.82 59.07 7,262.73 7,205.23 3,640.92 7,636.92 5,964,547.01 699,709.10 4.00 8,437.02 12,400.00 44.83 59.41 7,331.14 7,273.64 3,678.22 7,699.57 5,964,585.90 699,770.77 4.00 8,508.93 12,500.00 40.84 59.80 7,404.46 7,346.96 3,712.62 7,758.20 5,964,621.78 699,828.50 4.00 8,576.03 12,600.00 36.85 60.27 7,482.33 7,424.83 3,743.95 7,812.52 5,964,654.49 699,882.00 4.00 8,638.01 12,694.19 33.09 60.79 7,559.50 7,502.00 3,770.51 7,859.51 5,964,682.24 699,928.29 4.00 8,691.42 CM1 12,700.00 32.86 60.83 7,564.37 7,506.87 3,772.05 7,862.27 5,964,683.86 699,931.01 4.00 8,694.56 12,796.93 29.00 61.50 7,647.50 7,590.00 3,796.09 7,905.90 5,964,709.00 699,974.00 4.00 8,743.93 End Directional 12796.93'MD-18-12C T1 12,800.00 29.00 61.50 7,650.19 7,592.69 3,796.80 7,907.21 5,964,709.74 699,975.29 0.00 8,745.40 12,846.93 29.00 61.50 7,691.23 7,633.73 3,807.66 7,927.20 5,964,721.11 699,995.00 0.00 8,767.97 Begin Directional DLS 4.00 12846.93'MD 12,891.44 30.78 61.65 7,729.82 7,672.32 3,818.21 7,946.70 5,964,732.16 700,014.23 4.00 8,789.98 End Directional 12891.44'MD 12,900.00 30.78 61.65 7,737.18 7,679.68 3,820.30 7,950.56 5,964,734.34 700,018.03 0.00 8,794.32 6/21/2011 11:07:28AM Page 6 COMPASS 2003.16 Build 73 0 Sperry Drilling HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska TVD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (°) (°) (ft) ft (ft) (ft) (ft) (ft) 7,765.59 13,000.00 30.78 61.65 7,823.09 7,765.59 3,844.59 7,995.60 5,964,759.78 700,062.43 0.00 8,845.10 13,100.00 30.78 61.65 7,909.01 7,851.51 3,868.89 8,040.63 5,964,785.22 700,106.82 0.00 8,895.88 13,196.02 30.78 61.65 7,991.50 7,934.00 3,892.22 8,083.88 5,964,809.64 700,149.45 0.00 8,944.64 THRZ 13,200.00 30.78 61.65 7,994.92 7,937.42 3,893.19 8,085.67 5,964,810.66 700,151.22 0.00 8,946.66 13,300.00 30.78 61.65 8,080.84 8,023.34 3,917.49 8,130.70 5,964,836.10 700,195.62 0.00 8,997.44 13,400.00 30.78 61.65 8,166.75 8,109.25 3,941.78 8,175.74 5,964,861.54 700,240.02 0.00 9,048.21 13,477.69 30.78 61.65 8,233.50 8,176.00 3,960.66 8,210.73 5,964,881.30 700,274.51 0.00 9,087.66 BHRZ/Put River-7" 13,483.51 30.78 61.65 8,238.50 8,181.00 3,962.08 8,213.35 5,964,882.78 700,277.09 0.00 9,090.62 LCU/Shublik 13,500.00 30.78 61.65 8,252.67 8,195.17 3,966.08 8,220.78 5,964,886.98 700,284.41 0.00 9,098.99 13,530.07 30.78 61.65 8,278.50 8,221.00 3,973.39 8,234.32 5,964,894.63 700,297.76 0.00 9,114.26 TSAD 13,600.00 30.78 61.65 8,338.58 8,281.08 3,990,38 8,265.81 5,964,912.42 700,328.81 0.00 9,149.77 13,660.43 30.78 61.65 8,390.50 8,333.00 4,005.06 8,293.03 5,964,927.79 700,355.64 0.00 9,180.45 TCGL 13,700.00 30.78 61.65 8,424.50 8,367.00 4,014.68 8,310.85 5,964,937.86 700,373.21 0.00 9,200.55 13,720.95 30.78 61.65 8,442.50 8,385.00 4,019.77 8,320.29 5,964,943.19 700,382.51 0.00 9,211.19 BCGL 13,723.41 30.78 61.65 8,444.61 8,387.11 4,020.37 8,321.39 5,964,943.81 700,383.60 0.00 9,212.43 Begin Directional DLS 12.00 13723.41'MD 13,800.00 39.27 67.84 8,507.29 8,449.79 4,038.86 8,361.17 5,964,963.31 700,422.89 12.00 9,256.21 13,819.97 41,52 69.08 8,522.50 8,465.00 4,043.60 8,373.21 5,964,968.37 700,434.80 12.00 9,269.15 23SB 13,840.37 43.84 70.25 8,537.50 8,480.00 4,048.41 8,386.18 5,964,973.50 700,447.65 12.00 9,282.98 22TS 13,877.80 48.12 72.15 8,563.50 8,506.00 4,057.06 8,411.65 5,964,982.80 700,472.89 12.00 9,309.85 21TS 13,900.00 50.67 73.16 8,577.95 8,520.45 4,062.09 8,427.74 5,964,988.24 700,488.84 12.00 9,326.67 13,942.59 55.59 74.90 8,603.50 8,546.00 4,071.44 8,460.49 5,964,998.42 700,521.34 12.00 9,360.59 TZ1B 14,000.00 62.25 76.96 8,633.12 8,575.62 4,083.35 8,508.16 5,965,011.55 700,568.68 12.00 9,409.33 14,100.00 73.91 80.02 8,670.40 8,612.90 4,101.73 8,598.91 5,965,032.24 700,658.93 12.00 9,500.58 14,128.50 77.24 80.82 8,677.50 8,620.00 4,106.32 8,626.13 5,965,037.52 700,686.02 12.00 9,527.61 TDF 14,200.00 85.61 82.74 8,688.15 8,630.65 4,116.41 8,696.03 5,965,049.39 700,755.64 12.00 9,596.43 14,246.86 91.10 83.97 8,689.50 8,632.00 4,121.82 8,742.55 5,965,056.00 700,802.00 12.00 9,641.75 End Directional 14246.86'MD-18-12C T2 14,300.00 91.10 83.97 8,688.48 8,630.98 4,127.41 8,795.38 5,965,062.93 700,854.67 0.00 9,693.02 14,400.00 91.10 83.97 8,686.57 8,629.07 4,137.91 8,894.81 5,965,075.97 700,953.79 0.00 9,789.50 14,500.00 91.10 83.97 8,684.66 8,627.16 4,148.41 8,994.23 5,965,089.01 701,052.91 0.00 9,885.99 14,600.00 91.10 83.97 8,682.74 8,625,24 4,158.92 9,093.66 5,965,102.06 701,152.03 0.00 9,982,47 14,700.00 91.10 83.97 8,680.83 8,623.33 4,169.42 9,193.09 5,965,115.10 701,251.15 0.00 10,078.96 14,800.00 91.10 83.97 8,678.92 8,621.42 4,179.93 9,292.52 5,965,128.14 701,350.28 0.00 10,175.45 6/21/2011 11:07:28AM Page 7 COMPASS 2003.16 Build 73 • 0 Sperry Drilling HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska TVD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) 1°► 11 (ft) ft (ft) (ft) Ift) (ft) 8,621.00 14,821.92 91.10 83.97 8,678.50 8,621.00 4,182.23 9,314.31 5,965,131.00 701,372.00 0.00 10,196.59 Begin Directional DLS 4.00 14821.92'MD-18-12C T3 14,893.82 91.16 81.09 8,677.08 8,619.58 4,191.57 9,385.58 5,965,142.16 701,443.01 4.00 10,266.41 End Directional 14893.82'MD 14,900.00 91.16 81.09 8,676.96 8,619.46 4,192.53 9,391.69 5,965,143.27 701,449.08 0.00 10,272.45 15,000.00 91.16 81.09 8,674.93 8,617.43 4,208.01 9,490.46 5,965,161.27 701,547.42 0.00 10,370.13 15,100.00 91.16 81.09 8,672.90 8,615.40 4,223.49 9,589.24 5,965,179.27 701,645.76 0.00 10,467.80 15,200.00 91.16 81.09 8,670.87 8,613.37 4,238.97 9,688.01 5,965,197.27 701,744.10 0.00 10,565.48 15,274.02 91.16 81.09 8,669.37 8,611.87 4,250.42 9,761.12 5,965,210.59 701,816.89 0.00 10,637.78 Begin Directional DLS 4.00 15274.02'MD 15,300.00 91.00 80.07 8,668.88 8,611.38 4,254.67 9,786.75 5,965,215.50 701,842.40 4.00 10,663.21 15,400.00 90.37 76.12 8,667.68 8,610.18 4,275.30 9,884.57 5,965,238.62 701,939.66 4.00 10,761.86 15,457.72 90.00 73.84 8,667.50 8,610.00 4,290.26 9,940.31 5,965,255.00 701,995.00 4.00 10,819.24 18-12C T4 15,500.00 90.00 72.15 8,667.50 8,610.00 4,302.63 9,980.74 5,965,268.39 702,035.09 4.00 10,861.40 15,521.40 90.00 71.29 8,667.50 8,610.00 4,309.34 10,001.06 5,965,275.62 702,055.23 4.00 10,882.77 End Directional 15521.40'MD 15,600.00 90.00 71.29 8,667.50 8,610.00 4,334.56 10,075.51 5,965,302.73 702,129.01 0.00 10,961.30 15,700.00 90.00 71.29 8,667.50 8,610.00 4,366.63 10,170.22 5,965,337.22 702,222.87 0.00 11,061.20 15,800.00 90.00 71.29 8,667.50 8,610.00 4,398.71 10,264.94 5,965,371.70 702,316.73 0.00 11,161.10 15,900.00 90.00 71.29 8,667.50 8,610.00 4,430.79 10,359.65 5,965,406.19 702,410.58 0.00 11,261.01 16,000.00 90.00 71.29 8,667.50 8,610.00 4,462.86 10,454.37 5,965,440.68 702,504.44 0.00 11,360.91 16,025.22 90.00 71.29 8,667.50 8,610.00 4,470.95 10,478.26 5,965,449.38 702,528.11 0.00 11,386.11 Begin Directional DLS 4.00 16025.22'MD 16,100.00 90.00 74.28 8,667.50 8,610.00 4,493.08 10,549.68 5,965,473.32 702,598.94 4.00 11,460.70 16,200.00 90.00 78.28 8,667.50 8,610.00 4,516.79 10,646.81 5,965,499.51 702,695.43 4.00 11,559.82 16,300.00 90.00 82.28 8,667.50 8,610.00 4,533.67 10,745.35 5,965,518.90 702,793.50 4.00 11,657.79 16,358.07 90.00 84.60 8,667.50 8,610.00 4,540.30 10,803.04 5,965,527.00 702,851.00 4.00 11,713.96 18-12C T5 16,393.05 88.92 85.50 8,667.83 8,610.33 4,543.32 10,837.88 5,965,530.91 702,885.75 4.00 11,747.54 End Directional 16393.05'MD 16,400.00 88.92 85.50 8,667.96 8,610.46 4,543.86 10,844.81 5,965,531.63 702,892.66 0.00 11,754.19 16,500.00 88.92 85.50 8,669.84 8,612.34 4,551.72 10,944.48 5,965,542.03 702,992.10 0.00 11,849.95 16,600.00 88.92 85.50 8,671.72 8,614.22 4,559.57 11,044.16 5,965,552.42 703,091.53 0.00 11,945.70 16,700.00 88.92 85.50 8,673.61 8,616.11 4,567.42 11,143.83 5,965,562.82 703,190.97 0.00 12,041.45 16,800.00 88.92 85.50 8,675.49 8,617.99 4,575.27 11,243.51 5,965,573.22 703,290.40 0.00 12,137.21 16,900.00 88.92 85.50 8,677.37 8,619.87 4,583.12 11,343.18 5,965,583.61 703,389.84 0.00 12,232.96 16,999.45 88.92 85.50 8,679.24 8,621.74 4,590.93 11,442.30 5,965,593.95 703,488.72 0.00 12,328.19 Begin Directional DLS 4.00 16999.45'MD 17,000.00 88.94 85.48 8,679.25 8,621.75 4,590.97 11,442.85 5,965,594.01 703,489.27 3.97 12,328.72 17,100.00 92.02 82.93 8,678.41 8,620.91 4,601.06 11,542.32 5,965,606.64 703,588.44 4.00 12,425.09 17,200.00 95.10 80.37 8,672.20 8,614.70 4,615.54 11,641.05 5,965,623.64 703,686.76 4.00 12,522.36 17,246.44 96.53 79.18 8,667.50 8,610.00 4,623.74 11,686.51 5,965,633.00 703,732.00 4.00 12,567.71 End Directional 17246.44'MD-18-12C T6 17,300.00 96.53 79.18 8,661.41 8,603.91 4,633.73 11,738.78 5,965,644.32 703,783.99 0.00 12,620.05 6/21/2011 11:07:28AM Page 8 COMPASS 2003.16 Build 73 Sperry Drilling P rY 9 H ALLI B U RTO N Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska TVD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (°) (°) (ft) ft (ft) (ft) (ft) (ft) 8,592.55 17,400.00 96.53 79.18 8,650.05 8,592.55 4,652.39 11,836.37 5,965,665.47 703,881.06 0.00 12,717.77 17,500.00 96.53 79.18 8,638.68 8,581.18 4,671.04 11,933.95 5,965,686.61 703,978.13 0.00 12,815.49 17,600.00 96.53 79.18 8,627.31 8,569.81 4,689.70 12,031.54 5,965,707.75 704,075.20 0.00 12,913.20 17,686.33 96.53 79.18 8,617.50 8,560.00 4,705.80 12,115.78 5,965,726.00 704,159.00 0.00 12,997.56 18-12C T7 6/21/2011 11:07:28AM Page 9 COMPASS 2003.16 Build 73 Sperry Drilling HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska ND Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Welibore: Plan 18-12C Design: 18-12C WP 16 Targets Target Name -hit/miss target Dip Angle Dip Dir. TVD +NI-S +E/-W Northing Easting -Shape (°) (°) (ft) (ft) (ft) (ft) (ft) 18-12C T4 0.00 0.00 8,667.50 4,290.26 9,940.31 5,965,255.00 701,995.00 -plan hits target center -Point 18-12C Fault 2 0.00 0.00 8,644.00 4,624.23 7,521.92 5,965,527.00 699,569.00 -plan misses target center by 1020.68ft at 13681.39ft MD(8408.51 TVD,4010.16 N,8302.47 E) -Polygon Point 1 8,644.00 4,624.23 7,521.92 5,965,527.00 699,569.00 Point 2 8,644.00 4,079.34 7,744.07 5,964,988.00 699,805.00 Point 3 8,644.00 3,556.59 7,804.73 5,964,467.00 699,879.00 Point 4 8,644.00 4,079.34 7,744.07 5,964,988.00 699,805.00 18-12C T6 0.00 0.00 8,667.50 4,623.74 11,686.51 5,965,633.00 703,732.00 -plan hits target center -Point 18-12C GeoPoly 0.00 0.00 8,689.50 3,796.09 7,905.90 5,964,709.00 699,974.00 -plan misses target center by 530.97ft at 13692.19ft MD(8417.79 ND,4012.78 N,8307.33 E) -Polygon Point 1 8,689.50 4,165.82 8,508.59 5,965,094.00 700,567.00 Point2 8,689.50 4,250.12 9,202.01 5,965,196.00 701,258.00 Point 3 8,689.50 4,378.86 9,957.59 5,965,344.00 702,010.00 Point 4 8,689.50 4,576.25 10,492.84 5,965,555.00 702,540.00 Points 8,689.50 4,674.71 11,453.73 5,965,678.00 703,498.00 Point6 8,689.50 4,812.19 12,219.54 5,965,835.00 704,260.00 Point 7 8,689.50 4,652.23 12,215.45 5,965,675.00 704,260.00 Point 8 8,689.50 4,514.76 11,449.64 5,965,518.00 703,498.00 Point 9 8,689.50 4,416.29 10,488.75 5,965,395.00 702,540.00 Point 10 8,689.50 4,218.90 9,953.50 5,965,184.00 702,010.00 Point 11 8,689.50 4,090.17 9,197.92 5,965,036.00 701,258.00 Point 12 8,689.50 4,005.87 8,504.49 5,964,934.00 700,567.00 Point 13 8,689.50 4,165.82 8,508.59 5,965,094.00 700,567.00 18-12C T3 0.00 0.00 8,678.50 4,182.23 9,314.31 5,965,131.00 701,372.00 -plan hits target center -Point 18-12C T2 0.00 0.00 8,689.50 4,121.82 8,742.55 5,965,056.00 700,802.00 -plan hits target center -Point 18-12C T1 0.00 0.00 7,647.50 3,796.09 7,905.90 5,964,709.00 699,974.00 -plan hits target center -Point 18-12C Fault 1 0.00 0.00 8,644.00 3,711.69 7,294.50 5,964,609.00 699,365.00 -plan misses target center by 1027.36ft at 13357.25ft MD(8130.02 TVD,3931.40 N,8156.49 E) -Polygon Point 1 8,644.00 3,711.69 7,294.50 5,964,609.00 699,365.00 Point 2 8,644.00 3,618.53 7,651.26 5,964,525.00 699,724.00 Point 3 8,644.00 3,637.45 8,437.04 5,964,564.00 700,509.00 Point4 8,644.00 3,872.58 9,061.29 5,964,815.00 701,127.00 Point 5 8,644.00 3,947.42 9,381.33 5,964,898.00 701,445.00 Point6 8,644.00 4,013.66 10,155.32 5,964,984.00 702,217.00 Point 7 8,644.00 4,228.38 10,678.01 5,965,212.00 702,734.00 Point 8 8,644.00 4,336.83 11,444.08 5,965,340.00 703,497.00 Point 9 8,644.00 4,426.21 12,212.66 5,965,449.00 704,263.00 Point 10 8,644.00 4,454.94 12,888.66 5,965,495.00 704,938.00 Point 11 8,644.00 4,426.21 12,212.66 5,965,449.00 704,263.00 Point 12 8,644.00 4,336.83 11,444.08 5,965,340.00 703,497.00 Point 13 8,644.00 4,336.83 11,444.08 5,965,340.00 703,497.00 6/21/2011 11:07:28AM Page 10 COMPASS 2003.16 Build 73 Sperry Drilling HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska TVD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Point 14 8,644.00 4,228.38 10,678.01 5,965,212.00 702,734.00 Point 15 8,644.00 4,013.66 10,155.32 5,964,984.00 702,217.00 Point 16 8,644.00 3,947.42 9,381.33 5,964,898.00 701,445.00 Point 17 8,644.00 3,872.58 9,061.29 5,964,815.00 701,127.00 Point 18 8,644.00 3,637.45 8,437.04 5,964,564.00 700,509.00 Point 19 8,644.00 3,618.53 7,651.26 5,964,525.00 699,724.00 Point 20 8,644.00 3,711.69 7,294.50 5,964,609.00 699,365.00 18-12C T7 0.00 0.00 8,617.50 4,705.80 12,115.78 5,965,726.00 704,159.00 -plan hits target center -Point 18-12C T5 0.00 0.00 8,667.50 4,540.30 10,803.04 5,965,527.00 702,851.00 -plan hits target center -Point Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name P7 (") 13,477.69 8,233.50 7" 7 8-1/2 17,686.33 8,617.50 4 1/2" 4-1/2 6-1/8 2,840.50 2,707.04 13 3/8" 13-3/8 17-1/2 6/21/2011 11:07:28AM Page 11 COMPASS 2003.16 Build 73 Sperry Drilling HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska TVD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Formations Measured Vertical Vertical Dip Depth Depth Depth SS Dip Direction (ft) (ft) ft Name Lithology 11 11 9,850.49 6,166.50 WS2 14,128.50 8,677.50 TDF 3,450.86 3,217.50 SV4 13,877.80 8,563.50 21TS 13,720.95 8,442.50 BCGL 13,477.69 8,233.50 BHRZ/Put River 7,191.61 5,027.50 UG3 3,175.14 2,990.50 EOCU 6,694.39 4,814.50 UG4 10,282.35 6,351.50 WS1 4,500.06 3,874.50 SV2 5,445.49 4,279.50 SV1 13,840.37 8,537.50 22TS 8,701.50 BSAD 13,196.02 7,991.50 THRZ 13,530.07 8,278.50 TSAD 10,683.87 6,523.50 CM3 4,124.37 3,689.50 SV3 8,489.54 5,583.50 UG1 1,964.25 1,932.50 BPRF 13,660.43 8,390.50 TCGL 11,962.92 7,072.50 CM2 512.50 512.50 G1 12,694.19 7,559.50 CM1 13,483.51 8,238.50 LCU/Shublik 3,214.32 3,023.50 SV5 2,493.38 2,407.50 SV6 13,819.97 8,522.50 23SB 13,942.59 8,603.50 TZ1B 6/21/2011 11:07:28AM Page 12 COMPASS 2003.16 Build 73 . e Sperry Drilling H ALLI B U RTO N Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well 18-12 Company: BP-Alaska TVD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Project: Prudhoe Bay MD Reference: 18-12C Planned @ 57.50ft(17.5 GL+40.0'KB(D-25 Site: PB DS 18 North Reference: True Well: 18-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan 18-12C Design: 18-12C WP 16 Plan Annotations Measured Vertical Local Coordinates Depth Depth +NI-S +E/-W (ft) (ft) (ft) (ft) Comment 3,250.00 3,053.51 -294.90 817.93 KOP DLS 12.00 TFO-60.00 3250.00'MD 3,270.00 3,070.21 -298.48 828.34 Begin Directional DLS 4.00 3270.00'MD 4,438.01 3,847.92 -104.80 1,633.29 End Directional 4438.01 'MD 11,904.05 7,046.20 3,468.47 7,355.58 Begin Directional DLS 4.00 11904.05'MD 12,796.93 7,647.50 3,796.09 7,905.90 End Directional 12796.93'MD 12,846.93 7,691.23 3,807.66 7,927.20 Begin Directional DLS 4.00 12846.93'MD 12,891.44 7,729.82 3,818.21 7,946.70 End Directional 12891.44'MD 13,723.41 8,444.61 4,020.37 8,321.39 Begin Directional DLS 12.00 13723.41'MD 14,246.86 8,689.50 4,121.82 8,742.55 End Directional 14246.86'MD 14,821.92 8,678.50 4,182.23 9,314.31 Begin Directional DLS 4.00 14821.92'MD 14,893.82 8,677.08 4,191.57 9,385.58 End Directional 14893.82'MD 15,274.02 8,669.37 4,250.42 9,761.12 Begin Directional DLS 4.00 15274.02'MD 15,521.40 8,667.50 4,290.26 9,940.31 End Directional 15521.40'MD 16,025.22 8,667.50 4,309.34 10,001.06 Begin Directional DLS 4.00 16025.22'MD 16,393.05 8,667.83 4,470.95 10,478.25 End Directional 16393.05'MD 16,999.45 8,679.24 4,540.30 10,803.04 Begin Directional DLS 4.00 16999.45'MD 17,246.44 8,667.50 4,543.32 10,837.89 End Directional 17246.44'MD 17,686.33 8,617.50 4,590.93 11,442.31 TD at 17686.33'MD 6/21/2011 11:07:28AM Page 13 COMPASS 2003.16 Build 73 a m o 0 5 co o N o N g ^'m z o � rn m a j ._9 a H U c cj w d U E<5 mm E m E3 ' Unr QMNnn M.00),-n Qrom00,-0 d ¢ W c_U'm_°= mo.nMrnrnrnQr.nQrryr�rn.n�n.n V> L m���HWa' �•OQQN Mn WN�(O,drrn Nm Mmm�n a O L 07 O tO m m Q m m Q rn m M m m Q N m 0 O O ¢ M m m Q n n n N m ry m m m M n n M N m mQ Z � 'p yjU mmmmO)O)OOOOO���N NN On ,-¢L L toL JM uj �... UOOQO�O�Or OQOt0000NO0D0 J N N d] 000)O.-O.00NO OOOOOQONO N ¢ Z �N�V1� 1 LLOOOO�ONO.00m OO)OOOOOmO , W O,N O OC) ` N W T W M v ° m w`,n w`E N O J y iy y m `� /\ :0:000000:00000000000 •O j OD Z U 0 O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O 0 M n m Q a U O Q O Q O Q O O Q O Q Q O Q Q O Q O O W NCN U O I 11 ,•�`�� ` co Cl) >O�MNN 2N�.0'1.QOMUm')�M0 c'4 8.833. 0~ >Oo- 1 W N M N O N Q N Q m m Q O n O M Q m J.� . V , H mmmMO)O)0)Mrm_OOQmm4, Q M ��,,1 / WQ .-rnnnG 0.0,Mm0000,-,-N a J SW, U \ (/JO mOnO)m�rNMr NmQN ONMQO W O _MVMVOfONMOON0VNMO,MMM,C0 Ur Ct `\`` Q ZQm QO)m^tl)OOOOi00M0 MN pp e\�.�' W +0)0)0(000-NN0 ng3,9nOQWNO NN•- nmmO � NNMQ .Ocmm� .�� U M M M M Q Q Q Q Q Q Q Q Q Q Q Q Q C)N O `V, it m O 0.-N-NOOQN.-0003n00000000 EN a ' `\��� N MMMnnn� mmmmmmmmmmmm M� .OnQQQrnNQmnnmmm mmnm- z°o mW `� oomr... commmmmmmmmmm co V� M m 0,_M . �ONINOON.o0000000 OQONN.oO.oO.oO0m °o Nn°v3 0 O orciao����oiM��ri��QUiuia ,: �o.n.nmmmmmmmmnnrmmmrn M6 V _.- o R �+ Z 0 y N 00 Q Q Q 0 0 0 0 0 0 m 0 0 0 0 0 N N M M C,00000,,,-1-1-•-00000,0,00 r $ m NQVVO)0)001 00000000 T. W C N•� m .0 m .8 § g § .MMmm NNMMrnrnrnmmrnrnrnmmrnrn Z. 0« o 0o e m G N O O O O M M N O O R V M O m M U a O W o V V W 0 n Q fn 'O E>'° NNfe0000eoeon..n')NNUm')Woo0 O m U N N 0 0 r m m N N 0 0 N 0 0 0 M M 0 N 0 J �� C a en MQ-NNN M 000.0.0.00000 nn W V m 0 2'0- O 0•_N M0.00 n000.-N M0.Ol x00)0 rnEd u N p O OJO_ O Q rv � M r 0 0 "' . Y Y 8 b O 8 0.o., ptj ▪M O `N N(,)-1,:4- Q 2 Q ce M o ` r J Z Q t0 O ❑NOM '=,!,�V,`��/..```,�� U a00 M n `,'O�,TWAin,.•&Wir \ 1 T V00 4054 1�� ��� a `' 0 i-cvmoo ..014POOK‘W".411.42k7410Wigaill. 1►�;.,►, �:� mm 4.41WitaaiV4abAll IP 4IIP ‘iletil r o OTT 4*441r11.44,NPAVTIVOrMiT ■2144M,\A-74ec° E.) OM -A4 ,71,1A1hkelt-htAkTAVNAGY gaRVI4 -E o &W/W WI 0NNN ._4411, ¢• i C C C 1' ,`1,�'�\\�k ' {{``y� cce 7 0 0222 ����,,,S,��,�}a\\ - ��14L�Wili�'N a cc > ,7,7, °y �� ��11��1,, ,Q�,\\,,..5,•��`,,'�' T w az33� r1►� � 1a\\ _ ce• Y WNNNN n ,L2 c„ .401 _,, , Nr-isrove.no...4:,,t,* ■4wrvgp - Z 0 NWIP••qh-'-' ---,,,_..„01(4rPv70071.---4-. 4-:.' mak*. 0 3 0 0000M `jPenH III o o z 3°y°9 O ` W71 1► ` \ O el N al _ 2 -s»s: J 0 0 N OOON S-.$3 N > 0 aoo° iY".1 L . doNnM Q ❑Q M M >� L = , 0 BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C D-25 Planned @ 57.50ft(17.5 GL+40.0'KB) Reference Site: PB DS 18 MD Reference: 18-12C D-25 Planned @ 57.50ft(17.5 GL+40.0'KB) Site Error: 0.00ft North Reference: True Reference Well: 18-12 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan 18-12C Database: EDM.16-ANC Prod-WH24P Reference Design: 18-12C WP 16 Offset TVD Reference: Offset Datum Reference 18-12C WP 16 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of reference Interpolation Method: MD Interval 25.00ft Error Model: ISCWSA Depth Range: 3,250.00 to 17,686.33ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,964.63ft Error Surface: Elliptical Conic Survey Tool Program Date 6/21/2011 From To (ft) (ft) Survey(Wellbore) Tool Name Description 460.50 3,250.00 18-12 Srvy 1 MWD-Standard(18-12) MWD MWD-Standard 3,250.00 3,550.00 18-12C WP 16(Plan 18-12C) GYD-GC-SS Gyrodata gyro single shots 3,550.00 13,592.10 18-12C WP 16(Plan 18-12C) MWD+IFR+MS MWD+IFR+Multi Station 13,592.10 17,686.33 18-12C WP 16(Plan 18-12C) MWD+IFR+MS MWD+IFR+Multi Station 6/21/2011 10:03:23AM Page 2 of 4 COMPASS 2003.16 Build 73 BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay ND Reference: 18-12C D-25 Planned @ 57.50ft(17.5 GL+40.0'KB) Reference Site: PB DS 18 MD Reference: 18-12C D-25 Planned @ 57.50ft(17.5 GL+40.0'KB) Site Error: 0.00ft North Reference: True Reference Well: 18-12 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan 18-12C Database: EDM.16-ANC Prod-WH24P Reference Design: 18-12C WP 16 Offset ND Reference: Offset Datum Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) EX NETR3C T-03C-T-03C-T-03C 12,700.00 8,400.00 295.33 435.11 -104.10 FAIL-Major Risk Lis DS 02 L2-08-L2-08-L2-08 6,921.14 6,400.00 863.38 179.40 762.33 Pass-Major Risk L2-08A-L2-08A-L2-08A 6,921.14 6,400.00 863.38 179.40 762.33 Pass-Major Risk L2-18-L2-18-L2-18 14,015.67 12,200.00 1,210.59 382.00 829.87 Pass-Major Risk L2-18-L2-18A-L2-18A 15,098.62 13,675.00 87.34 449.95 -342.43 FAIL-Major Risk PB DS 18 18-11-18-11-18-11 3,257.12 3,575.00 938.22 80.55 883.88 Pass-Major Risk 18-11-18-11A-18-11A 3,250.00 3,575.00 944.00 88.09 883.91 Pass-Major Risk 18-11-18-11 DPN-18-11DPN 3,250.00 3,575.00 944.00 88.09 883.91 Pass-Major Risk 18-12-18-12-18-12 3,260.50 3,250.00 0.12 0.78 -0.66 FAIL-NOERRORS 18-12-18-12A-18-12A 3,260.50 3,250.00 0.12 0.76 -0.65 FAIL-NOERRORS 18-12-18-12B-18-128 3,260.50 3,250.00 0.12 0.76 -0.64 FAIL-NOERRORS 18-13-18-13-18-13 3,250.00 3,600.00 1,001.96 83.54 951.59 Pass-Major Risk 18-13-18-13B-18-13B 3,250.00 3,600.00 999.62 83.50 949.26 Pass-Major Risk 18-13-18-13BPB2-18-13BPB2 3,250.00 3,600.00 999.62 83.50 949.26 Pass-Major Risk 18-13-18-13C-18-13C 3,250.00 3,600.00 999.62 83.51 949.26 Pass-Major Risk 18-13_DO NOT USE-18-13A-18-13A 3,250.00 3,600.00 999.62 83.51 949.26 Pass-Major Risk 18-13_DO NOT USE-18-13BPB2-18-13BPB2 3,250.00 3,600.00 999.62 83.51 949.26 Pass-Major Risk 18-13_DO NOT USE-18-13PB1-18-13PB1 3,250.00 3,600.00 1,001.96 83.55 951.59 Pass-Major Risk 18-14-18-14-18-14 3,256.64 3,700.00 1,202.99 85.59 1,149.06 Pass-Major Risk 18-14-18-14A-18-14A 3,257.66 3,700.00 1,204.21 85.76 1,150.12 Pass-Major Risk 18-14-18-14APB1-18-14APB1 3,257.66 3,700.00 1,204.21 85.61 1,150.28 Pass-Major Risk 18-14-18-148-18-148 3,258.23 3,700.00 1,204.90 85.61 1,150.97 Pass-Major Risk 18-14-18-14C-18-14C 3,258.23 3,700.00 1,204.90 85.61 1,150.97 Pass-Major Risk 18-20-18-20-18-20 3,250.00 3,500.00 1,134.05 107.26 1,026.76 Pass-Major Risk 18-21-18-21-18-21 3,265.00 3,275.00 301.14 116.02 186.72 Pass-Major Risk 18-21A-18-21A-18-21A 3,265.00 3,275.00 301.14 116.02 186.72 Pass-Major Risk 18-22-18-22-18-22 3,257.14 3,500.00 825.53 80.54 774.75 Pass-Major Risk 18-22-18-22A-18-22A 3,257.14 3,500.00 825.53 80.54 774.75 Pass-Major Risk 18-24-18-24-18-24 3,256.77 3,650.00 1,102.58 90.70 1,044.75 Pass-Major Risk 18-24-18-24A-18-24A 3,257.38 3,650.00 1,103.27 90.72 1,045.43 Pass-Major Risk 18-24-18-24AL1-18-24AL1 3,257.38 3,650.00 1,103.27 90.72 1,045.43 Pass-Major Risk 18-24-18-24AL2-18-24AL2 3,257.38 3,650.00 1,103.27 90.72 1,045.43 Pass-Major Risk 18-24-18-24B-18-24B 3,257.38 3,650.00 1,103.27 90.72 1,045.43 Pass-Major Risk 18-24_DIMS-18-24-18-24 Out of range 18-24_DIMS-18-24A-18-24A Out of range 18-24_DIMS-18-246-18-24B Out of range 18-25-18-25-18-25 4,278.82 4,275.00 204.38 129.97 104.51 Pass-Major Risk 18-25A-18-25A-18-25A 4,279.31 4,275.00 205.14 130.00 105.03 Pass-Major Risk 18-25APB1-18-25APB1-18-25APB1 4,279.31 4,275.00 205.14 130.00 105.03 Pass-Major Risk 18-33-18-33-18-33 3,257.49 3,675.00 555.37 116.63 446.76 Pass-Major Risk 18-33-18-33A-18-33A 3,257.49 3,675.00 555.37 116.94 446.34 Pass-Major Risk 18-33-18-33APB1-18-33APB1 3,257.49 3,675.00 555.37 116.84 446.44 Pass-Major Risk 18-34-18-34-18-34 3,354.60 3,550.00 352.96 120.49 256.71 Pass-Major Risk 6/21/2011 10:03:23AM Page 3 of 4 COMPASS 2003.16 Build 73 BPPASSPORT Anticollision Report I Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12 Project: Prudhoe Bay TVD Reference: 18-12C D-25 Planned @ 57.508(17.5 GL+40.0'KB) Reference Site: PB DS 18 MD Reference: 18-12C D-25 Planned @ 57.50ft(17.5 GL+40.0'KB) Site Error: 0.008 North Reference: True Reference Well: 18-12 Survey Calculation Method: Minimum Curvature Well Error: 0.008 Output errors are at 1.00 sigma Reference Wellbore Plan 18-12C Database: EDM.16-ANC Prod-WH24P Reference Design: 18-12C WP 16 Offset TVD Reference: Offset Datum Reference Depths are relative to 18-12C D-25 Planned @ 57.508 Coordinates are relative to 18-12 Offset Depths are relative to Offset Datum Coordinate System is US State Plane 1927(Exact solution),Alaska Zone 04 Central Meridian is 150°0'0.000 W° Grid Convergence at Surface is:1.47° Ladder Plot 2000- - -- I i I j±11 ,:� 11 . . I I i tit�I 1 ! I I C 1150°1000- --- !i / 1 ` 1 ;_ O 1 :HH- 1II J 1 J _ J I I I I 1 I ' 1:............1""2 J:, 0 I I I 0 2500 5000 L E G7LQQ D 10000 12500 15000 Measured Depth(2500 ft/in) T-03C,T-03C,T-03C V1 •$ 18-13 DO NOT USE,18-13A,18-13A VO -34- 18-24,18-24AL1,18-24AL1 V1 4 L2-08,L2-08,L2-08 V1 18-13_DO NOTUSE,18-13BPB2,18-13BPB2 VO $ 18-24,18-24AL2,18-24AL2 V1 L2-08A,L2-08A,L2-08AV2 18-13_DO NOT USE,18-13PB1,18-13PB1 VO -$- 18-24,18-24B,18-24B V6 L2-18,L2-18,L2-18V2 18-14,18-14,18-14 V5 18-24_DMS,18-24,18-24 VO Ell- L2-18,L2-18A,L2-18AV3 jE- 18-14,1 8-14A,18 14AV4 $ 1 8 24_DMS,18 24A,18 24AV0 18-11,18-11,18-11 V4 -B- 18-14,18-14APB1,18-14APB1 V4 18-24_DMS,18-24B,18-24B V0 18-11,18-11 A,18-11 A VO 18-14,18-14B,18-14B V6 18-25,18-25,18-25V1 9- 18-11,18-11 DPN,18-11 DPN V3 18-14,18-14C,18-14C V4 .--;-- 18-25A,18-25A,18-25AV1 4- 18-12,18-12,18-12 V1 -e- 18-20,18-20,18-20 V1 18-25APB1,18-25APB1,18-25APB1 V1 14- 18-12,18-12A,18-12A V 1 -Itt- 18-21,18-21,18-21 V1 DE- 18-33,18-33,18-33 V1 - 18-12,18-128,18-12B V5 -34- 18-21 A,18-21 A,18-21 AV 1 18-33,18-33A,18-33AV2 0- 1 g-15,123-13,16-1,i VU •• • 123-12,185-L2,Th-22 V1 16-J.3,1 F-.f iANt51,12S-:i.J/U-'tS1 VJ 6/21/2011 10:03:23AM Page 4 of 4 COMPASS 2003.16 Build 73 1 . ! !L i op 0[] op op op og N -I op og 4; - -- 2n6vzi. 0 a 1 ufzi1111L' Witl 1Y- g 0 H 01 !ANA'I: 111 II °H A og 4 op sep cau- jj/I a kr,. 1 ,•_ r ..- --.1 ktif-ii -3' L.i..-1.-,-. I I-4 I I z z :,T.7 v, _,,,, W4 OM 4.t.“--, ,..,.. , ,-,-- - , .`.."4 rill A ,<.n z. We 1-4V-M --,c... t r _ — —, c,, Ln . I --* C..) Ikci (..) s_l_f&r co Witalli-Mo - 0 ..,- , ••=-..- . , 7 hti. Ow - . -•-• - • ,---,, .0 A IN . - --, (3 _.1.41110 t . . . - o.....2. Q) —1 .F1 1., u --1 ---I .... ... ) - . Pli 1 Q) •.. III arm," ' ■g ›_,.. 2. 1 - 2 1 MI . - ...- I , , 1 ii 1.----ED pi -____= pr7.07 40071 ,.., 0 IL. -, 0 i , , I V.1 IE Z' C,1 1 I : : --, : :. . . : 7. ; , . .. : a:, ' li lb .1M 1111:P4 i . . ' ' . . . . . u, . ° I— 1 . ) I I .1 '- '= R ,3 15 tii .1 ■ 1 l 41 M.. .. , —1 1 it.t:tt: AU I I 11111 uii!:..ED 1111 m •IP.-1 I I ° 1".. i . ?. - 1 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 I find Alaska DNR Case Summary File Type: ADL File Number. 28321 #Printable Case File Summary See Township,Range,Section and Acreage? New Search o Yes No LAS Menu !Case Abstract I Case Detail I Land Abstract File: ADL 28321 maP Search for Status Plat Updates As of 07/11/2011 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E.BENSON BL ATTN:LAND MANAGER-ALASKA ANCHORAGE AK 995196612 Case Type:784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location:DOG DIV OIL AND GAS Case Status: 35 ISSUED Status Date: 09/14/1965 Total Acres: 2480.000 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: Ol1N Range: 015E Section: 17 Section Acres:640 Search Plats Meridian: U Township: 011N Range: 015E Section: 18 Section Acres:599 Meridian: U Township: 011N Range: 015E Section: 19 Section Acres:601 Meridian: U Township: O11N Range: 015E Section: 20 Section Acres:640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-151 T11N, R15E, UM 17, 18, 19, 20 2480.00 End of Case Summary Last updated on 07/11/2011. 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/proj ects/las/Case_Summary.cfm?FileType=ADL&FileNumber=2832... 7/11/2011 Alaska Department of Natural Resources Land Administration System Page 1 of 1 NAlaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources I find Alaska DNR Case Summary File Type: ADL File Number. 28322 0 Printable Case File Summary See Township,Range,Section and Acreage? Yes No New Search LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28322 Map Search for Status Plat Updates As of 07/11/2011 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E.BENSON BL ATTN:LAND MANAGER-ALASKA ANCHORAGE AK 995196612 Case Type:784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location: DOG DIV OIL AND GAS Case Status: 35 ISSUED Status Date: 09/14/1965 Total Acres: 2560.000 Date Initiated:05/28/1965 Office of Primary Responsibility:DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS NORTH SLOPE Last Transaction:AA-NRB ASSIGNMENT APPROVED Meridian: U Township: 011N Range: 015E Section: 15 Section Acres:640 Search Plats Meridian: U Township: Ol1N Range: 015E Section: 16 Section Acres:640 Meridian: U Township: 011N Range: 015E Section: 21 Section Acres:640 Meridian: U Township: 011N Range: 015E Section: 22 Section Acres:640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-152 TIIN-RISE-UM 1 5,16,21,22 2560.00 U-3- 7 End of Case Summary Last updated on 07/11/2011. 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/proj ects/las/Case_Summary.cfm?FileType=ADL&FileNumber=2832... 7/11/2011 TRANSMITTAL LETTER CHECKLIST WELL NAME 7 Z I27- PTD# a?/.�09v? 7A 2) ✓ Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: /�, 'VA,i/i'.3,41// POOL: f�—,4"/.'A 4C ,.4y C9/2. 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 uali and quantity. (Company Name) must contact the q h' an q h' Commission to obtain advance approval of such water well testing program. Rev: 1/11/2008 CI) CAF 3 a) N 7 N a O 0- O En u)o (d O Q 7 U 05 N E a) a. V) Q o 6 O' N O O E >, O a) Q C C 0) O c C a) '0 7 O N 7 > 3 cn a' p rn a ca CO o m O a ° o m o o o 0 F o F d — .) 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C . n o a) N — 0 0 a) -p co E CO 0 7 C O O .5 Q L n a) n n a) a) n CO N n E 0 (O ■O) C U N N O C .0 N CU a) O O rn N n N h A— co n co co To a) 0 N cD •3 cn "O U E (0 CO .0 C 7 7 N a3 0 >` a = C •- -0 .N n a) O o) �° m n n o co >. n o a 3 r c a) a) > m C m a) Q Cl. @ ° c `o 0 a) a) >. • a) ji d C m _0 - -0 -0 -° 0 • c cv �• a a) in 'm a a) > . 0 L 3 2 a CO 'c U a) a c m c E I— x > a> c 3 1)) 0 0 c a) `O 0 0 0 E C w 0 o a) o o U a m -`0 i SIMICE [IF ALASEA 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 McMullen Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU 18-12C BP Exploration (Alaska), Inc. Permit No: 210-092 Surface Location: 1166' FNL, 403' FWL, SEC. 19, Ti 1N, R15E, UM Bottomhole Location: 5271' FNL, 3348' FWL, SEC. 20, T11N, R15E, UM Dear Mr. McMullen: 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, 4 /,, Daniel T. Seamount, Jr. Chair DATED this7? day of July, 2010. cc: Department of Fish 86 Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA C ALASK L AND GAS CONSERVATION COMMIS N RECEIVED'7- -/D PERMIT TO DRILL ` 20 AAC 25.005 JUL. 0 6 2010 la.Type of work: lb.Proposed Well Class: ®Development Oil ❑Service-Winj ❑Single Zone Alas o it jf,ln�l �s„pr-.. _0 for. ❑ Drill IS Redrill ❑ Stratigraphic Test ❑Development Gas ❑Service-Supply ❑Multiple Zone L'] oa�a` - I114gR ❑ Re-Entry ❑ Exploratory ❑Service-WAG ❑Service-Disp i+ii1CfnfJgi Shale Gas 2. Operator Name: 5.Bond: ® Blanket ❑Single Well 11. Well Name and Number: BP Exploration(Alaska)Inc. Bond No. 6194193 PBU 18-12C -- 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 14220' ND 8742'ss Prudhoe Bay Field/Prudhoe 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Bay Oil Pool Surface: ADL 028321 1166'FNL,403'FWL,SEC. 19,T11N, R15E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 3158'FNL,4880'FWL, SEC. 19,T11N, R15E, UM September 15,2010 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 5271'FNL,3348'FWL, SEC.20,T11N, R15E, UM 2560 25,000' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: 47' feet 15.Distance to Nearest Well Open Surface: x- 692168 y-5960712 Zone- ASP4 GL Elevation above MSL: feet to Same Pool: 1,000' 16.Deviated Wells: Kickoff Depth: 11580 feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 90 degrees Downhole: 3300 Surface: 2420 18. Casing Program: Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling Length MD ND MD ND (including stage data 3" _ 2-3/8" 4.7# L-80 STL 3220' 11000' 8588'ss 14220' 8742'ss 63 sx Class'G' 19. PRESENT WELL CONDITION SUMMARY(To be completed for Redrill and Re-entry Operations) Total Depth MD(ft): Total Depth ND(ft): Plugs(measured): Effective Depth MD(ft): Effective Depth TVD(ft): Junk(measured): 13914' 8731' None 13878' 8730' None Casing Length Size Cement Volume MD ND Conductor/Structural 110' 20" 1610#Poleset 110' 110' Surface 2830' 13-3/8" 2500 sx Coldset III.400gx c9lcigeli II_,-- ___ 2830' 2697' Intermediate 9935' 9-5/8" 500 sx Class'G'.300 sx Coldset I 9935' 8303' Production Liner 2199' 7" 450 sx Class'G' , 9631'-11830' 8153'-8737' Liner 157' 4-1/2" Uncemented 11707'-11864' 8727'-8740' Liner 2-3/8" 2286' 60 sx Class'G' 11628'-13914' 8721'-8731' Perforation Depth MD(ft): 12560'-13780' Perforation Depth ND(ft): 8761'-8728' 20.Attachments: ❑ Property Plat IN BOP Sketch ®Drilling Program ❑Time vs Depth Plot ❑Shallow Hazard Analysis ❑ Diverter Sketch ❑Seabed Report ®Drilling Fluid Program CO 20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Sean McLaughlin,564-4387 Printed Name Joh j �- Title Engineering Team Leader Prepared By Name/Number Signature � Phone 564-4711 Date 7/7/o Terrie Hubble,564-4628 Commission Use Only Permit To Drill API Number: Permit o See cover letter for Number:�/D04oZ 50-029-21615-03-00 (r ',U other requirements Conditions of Approval: If box is checked,w_ell ma no be used to explore for,test,or produce coalbed methane,gas hydrates,or gas contained shales: Er „fc ,3$00 PSG /x P le.-- t--- Sam les R d: J Other: /� / l P eq' ❑'Yes o No Mud Log Req'd: Oyes �No �Z.soa e se... """` `�"�-�+1 HZS Measures: Yes ❑No Directional Survey Req'd: ffYes ❑No 7 / �`7 /o APPROVED BY THE COMMISSION / Date ,COMMISSIONER Form 10-401 Revised 0 /2009 This permit is valid for 24 months from the date of pr v I( 0 AAC 25.005(g)) Submit In D plicate ORIGINAL o' 723•/0 v i2'`� �Y�G' To: Alaska Oil & Gas Conservation Commission From: Sean McLaughlin bp CTD Engineer Date: June 28, 2010 Re: 18-12C Permit to Drill request Approval is requested for a permit to drill a CTD sidetrack from well 18-12B. 18-12B is a July 2005 CTD ST to a ZN1A target SE of DS18. CTD encountered slow drilling, poor quality sands and unpredicted minor faulting. All available sands were perforated. The well declined within a couple of months of being POP such that the well was not competitive and was subsequently shut-in & moved to a cycle/swing status within few months. The well displayed no recharge ability for the next two years while in the HP system. In an effort to improve productivity, 18-12B was swapped to the LP system in the spring of 2008 and the subsequent tests showed it to be making all gas and no oil. The August 2009 slickline drift &tag with sample bailer (to deviation at 11,053' md), came back empty. The most recent POP attempt was in Nov/ Dec 2009 and the well was shown to be only making gas in HP. There are currently no viable wellwork options left to pursue. The proposed plan for 18-12C is to drill a through tubing sidetrack with the Nordic 1 Coiled Tubing Drilling rig on or around September 15, 2010. The existing perforations will be isolated by a CIBP and the primary cmt job. The sidetrack will exit the 3-1/2"tubing and 7" liner above the production packer. The annular cement pumped as part of the pre-rig will server as the new production packer. The sidetrack will target zone 1 A reserves. CTD Sidetrack Summary Pre-Rig Work: (scheduled to begin August 15, 2010) 1. 0 MIT-IA, -OA 2. C Dummy WS drift 3. C Set CIBP at 11,600' 4. C Punch tubing CO 11,590' 5. C Set cement retainer @ 11,580' 6. C Cement up 3-1/2"x 7" annulas 7. C Cleanout to top of the cement retainer with a 2.8" mill 8. S Pull GLV, pump freeze protect in IA, Set DGLV 9. 0 Test: PPPOT-T. Torque LDS 10. 0 PT MV, SV, WV 11. 0 Blind and bleed lines, remove well house, level pad /- Rig Work: (scheduled to begin on September 15, 2010) 1. MIRU and test BOPE to 250 psi low and 3500 psi high 2. Set 3-1/2" monobore whipstock at 11,560' 3. Mill 2.8" window at 11,560' and 10' of rathole 4. MIT-IA to 3000 psi 5. Drill Lateral: 3" OH, 2660' (12 deg/100 planned) with resistivity —1,4;5 6. Run 2-3/8" solid liner leaving TOL at 11000' PTD 7. Pump primary cement leaving TOC at 11000', 13 bbls of 15.8 ppg liner cmt planned 8. Cleanout liner and MCNL/GR/CCL log 9. Test liner lap to 2000 psi 10. Perforate liner per asset instructions (1200') 11. Freeze protect well, RDMO Post Rig: 1. Re-install well house and attach production lines 2. Pull BPV .3. Run GLV's if needed 4. Test separator (-1200' of pens) Mud Program: • Well Kill: 8.4 ppg brine • Milling/drilling: 8.6 ppg Geo-VIS . Disposal: • All Class II drilling and completion fluids will go to Grind & Inject at DS 4. • All Class II drilling solids will go to Grind & Inject at DS 4. • All Class I wastes will go to Pad 3 for disposal. Hole sizes: 3.0" bi-center hole: 11560' - 14220' . Casing Program: • 2-3/8", L-80 4.70# STL 11000' and- 14220' and • A minimum of 13 bbls 15.8 ppg cement will be used for liner cementing. (Assuming 3.0" bit size and TD @ 14220', with 20% excess in the open hole interval) • TOC planned at 11000'. ' Well Control: • BOP diagram is attached. • Pipe rams, blind rams and the CT pack off will be pressure tested to 250 psi and to 3500 psi. . • The annular preventer will be tested to 250 psi and 2500 psi. ' Directional • See attached directional plan. Maximum planned hole angle is 90 deg at 14000'. • Magnetic and inclination surveys will be taken every 30 ft. No gyro will be run. • Distance to nearest property-25000 ft • Distance to nearest well within pool - 1000' from 18-21A Anti-Collision • There are no collision issues Logging • MWD directional, Gamma Ray and Resistivity logs will be run over all of the open hole section. • Cased hole GR/CCL, logs will be run. Hazards • The maximum recorded H2S level on DS18 is 20 ppm. ' • Lost circulation risk is low. Reservoir Pressure • The reservoir pressure on 18-12C is estimated at 3,300 psi at 8,800'TVDSS. (7.2 ppg equivalent) • Max. expected surface pressure with gas (0.10 psi/ft) to surface is 2420 psi. Sean McLaughlin CTD Engineer CC: Well File Sondra Stewman/Terrie Hubble TREE= 3-1/8'FMC SAF TES:WELLHEAD= FMC S PRESSURE LIMITS TS IN PACKERS E CASES ACTUATOR= AXELSON 1 8 1 2 B CONTACT WIE(x5102)PRIOR TO PRESSURE TESTING. KB.ELEV= 47' BF.ELEV= 23.8' WELL ANGLE>70°@ 10097'&>90°Q 12183'. BF. 1200' ORIGINAL 4-112"LNR FROM PARENT WELL NOT KOP Max Angle= 98 ft 12705' SHOWN ON DIAGRAM Datum MD= N/A Datum TVD= 8800'SS 0 l . -. 1 2268' —13-1/2'CAMCO TRDRIA TRSV,ID=2.812" 13-3/8"CSG,72#, L-80,ID=12.347" —{ 2830' GAS LIFT MANDRELS Minimum ID = 1.745" 11628' ST MD TVD DEV TYPE VLV LATCH PORT DATE i I 1 3790 3503 34 CA-MMG-2 DMY RK 0 03/20/10 SEAL ASSY(LNR TOP PKR) '-I I 9399' —13-1/2"OTIS X NIP,ID=2.813" 9-5/8"X 7"TIW LNR HGR —I 9631' • 9-5/8"CSG,47#,L-80,ID=8.681" H 9935' 1 I 11628' —{BKR LNR TOP PKR&SEAL ASSY,ID=1.745" MI 1 11644' —12.70"BKR DEPLOY SLV,ID=2.250" 11644' H EST TOP OF CEMENT LNR I 11718' —1TMV OVERSHOT ASSY,ID=4.75"(BEHIND PIPE) 3-1/2"TBG-PC,9.3#,N-80, .0087 bpf, ID=2.992" —I 11718' N i ' 11720' —I TNV POLISHED RISER W/2.813"X- PROFILE(BEHIND PIPE) }? II 11730' H BTM OF TIW OVERSHOT ASSY (BEHIND PIPE) 11732' —17"X 4-1/2"TIW SS PKR,ID=3.00"(BEHIND PIPE) I TOP OF 4-1/2"SLOTTED LNR, 13.5#, ID=3.92" 11780' } 7"LNR,29#,L-80, .0371 bpf, ID=6.184" H 11830' MILLED WINDOW(18-12B) MECHANICAL WHIPSTOCK(06/18/05) --I 11862' „. 11864'-11871' RATAG —I 11870' mai TOP OF 2-3/8”LNR,4.6#,L-80, ID=1.941" —1 11984' I":`;:wit CIBP —1 11998' ,wi 8 12382' --I MA RKER w/PUP JNT 1 Si � I 2-3/8"SLTD/SOLID LNR,4.6#,L-80, ID=1.941" 14045' I I PERFORATION SUMMARY — ` 13809' —J RIG(0 OUT BY RIG(06/30/05) REF LOG: MWD/NGP GR/ROP ON 06/28/05 TIE-IN LOG: GEOLOGY PDC LOG ANGLE AT TOP FERF: 93 @ 12560' Note: Refer to Production DB for historical perf data ;,, SIZE SPF INTERVAL Opn/Sqz DATE 1-9/16" 6 12560-13120 0 07/03/05 •0 PBTD — 13878' :>` 1-9/16" 6 13190-13290 0 07/03/05 1-9/16" 6 13400- 13630 0 07/03/05 2-3/8"LNR,4.7#,L-80,STL, .0036 bpf,ID=1.92" --I 13914' 1-9/16" 6 13700-13780 0 07/03/05 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNfT 12/23186 ORIGINAL COMPLETION WELL: 18-12B 11/08/97 CT D SIDETRACK PERMIT No:`2050730 07104/05 NORDIC1 CTDSIDETRACK API No: 50-029-21615-02 07/07/05 RMI-VPJC GLV C/O SEC 19,T11 N, R15E, 1166'FNL&402'FWL 01/01/06 GJB/TLH DRLG DRAFT CORRECTIONS 03/21/10 SWC/SV GLV C/O(03/20/10) BP Exploration(Alaska) TREE= 3-1/8"FMC WELLHEAD= FMC 1 8-1 2 C SAFETY NOTES: FHL/TIW HBBP PACKERS HAVE ACTUATOR= AXELSON REDO 'EST PRESSURE LIMITS IN SOME CASES. KB ELEV= 47' pmpoSed CTD si-ietrack CONT,-._. WIE(x5102)PRIOR TO PRESSURE TESTING. BF.ELEV= 23.8' WELL ANGLE>70°@ 10097'&>90°@ 12183'. ORIGINAL 4-1/2"LNR FROM PARENT WELL NOT KOP= 1200' SHOWN ON DIAGRA M Max Angle= 98 @ 12705' Datum MD= N/A Datum 11/D= 8800'SS O2268' —{3-1/2"CAMCO TRDP-1A TRSV, ID=2.812" 1 13-3/8"CSG,72#, L-80, ID= 12.347" — 2830' GAS LIFT MANDRELS ST MD WD DEV TYPE VLV LATCH PORT DATE Minimum ID = 1.745" @ 11628' t 3790 3503 34 CA-MMG-2 DMY RK 0 03/20/10 SEAL ASSY(LNR TOP PKR) LI I I 9399' —I 3-1/2"OTIS X NIP, ID=2.813" 9-5/8"X 7"TIW LNR HGR H 9631' 1---( L TS G R -9710' 9-5/8"CSG,47#, L-80,ID=8.681" H 9935' I A • .o of cement packer — 9900' 11000' HTop of 2-3/8"liner,Top of cement I3-1/2"monobore w hipstock — 11560' i I I 14220' H2-3/8"L-80 liner PERFORATION SUMMARY 87 dec: .. REF LOG: MWD/NGP GR/ROP ON 06/28/05 j: `l::: 11580' H3-1/2"cement retainer TIE-IN LOG: GEOLOGY PDC LOG I 11590' HTubing punches ANGLE AT TOP PERF: 93 @ 12560' Note: Refer to Production DB for historical perf data 11600' H3-1/2"CIBP SIZE SPF INTERVAL Opn/Sqz DATE : Z4 ►Z�:: 11628' ]—{BKR LNR TOP PKR&SEAL ASSY, ID=1.745" 1-9/16" 6 12560- 13120 O 07/03/05 !'°: 1-9116" 6 13190- 13290 O 07/03/05 I "' 11644' —12.70"BKR DEPLOY SLV,ID=2.250" I 1-9/16" 6 13400- 13630 0 07/03/05 i , c 11644' HEST TOP OF CEMENT LNR 1-9/16" 6 13700- 13780 0 07/03/05 I' � F: 11718' H TM/OVERSHOT ASSY, ID=4.75"(BEHIND PIPE) 11720' HTMV POLISHED RISER W/2.813"X-PROFILE(BEHIND PIP 3-1/2"TBG-PC,9.3#,N-80, .0087 bpf,ID=2.992" H 11718' 1;'A,` '.1 I 11730' IH BTM OF TM/OVERSHOT ASSY(BEHIND PIPE) I � '. -(E� 11732' H7"X 4-1/2"TW SS PKR, ID=3.00"(BEHIND PIPE) 7"LNR,29#, L-80, .0371 bpf,ID=6.184" —{ 11830' -4 . I. MILLED WINDOW(18-12B) 11864' -11871' • 12382' —I MARKER w/PUP JNT I 13809' CLEANOUT BY PBTD 13878 ""•'`` RIG(06/30/05) 2-3/8"LNR,4.7#, L-80,STL, .0036 bpf, ID=1.92" H 13914' ' `3 w e/bore DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/23/86_ ORIGINAL COMPLETION WELL: 18-12C 11/08/97 CTD SIDETRACK PERMIT No: 2050730 07/04/05 NORDIC1 CTD SIDETRACK API No: 50-029-21615-03 - 07/07/05 RMH/PJC GLV C/O SEC 19,T11 N, R15E, 1166'FNL&402'FWL 01/01/06 GJB/TLH DRLG DRAFT CORRECTIONS 03/21/10 SWC/SV GLV C/O(03/20/10) BP Exploration(Alaska) IPM O O CO O O at Co at O CO 0 M O 0 0 I. 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A°Mir OA IR■ BPPASSPORT 0 b ' HUMES Travelling Cylinder Report p 1NTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well 18-12-Slot 12 Project: Prudhoe Bay TVD Reference: Mean Sea Level Reference Site: PB DS 18 MD Reference: 23: 12 11/9/1986 00:00 @ 47.00ft(generic drilling rig) Site Error: 0.00ft North Reference: True Reference Well: 18-12 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan 3,18-12C Database: EDM.16-Anc Prod-WH24P Reference Design: Plan 3 Offset TVD Reference: Offset Datum Reference Plan 3 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer( Interpolation Method: MD Interval 25.00ft Error Model: ISCWSA Depth Range: 11,486.00 to 14,220.00ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,618.90ft Error Surface: Elliptical Conic Survey Tool Program Date 4/27/2010 From To (ft) (ft) Survey(Wellbore) Tool Name Description 450.00 11,486.00 1 :MWD-Standard(18-12) MWD MWD-Standard 11,486.00 14,220.00 Plan 3(Plan 3, 18-12C) MWD MWD-Standard Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (in) (in) 14,220.00 8,742.21 2-3/8" 2.375 3.000 Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) PB DS 05 05-26-05-26A-05-26A 14,075.00 12,425.00 1,367.17 468.52 898.59 Pass-Major Risk PB DS 18 18-11 -18-11A-18-11A Out of range 18-12-18-12-18-12 11,624.80 11,625.00 2.98 11.80 -6.96 FAIL-Major Risk 18-12-18-12A-18-12A 11,624.80 11,625.00 2.98 11.78 -7.00 FAIL-Major Risk 18-12-18-12B-18-12B 11,624.80 11,625.00 2.98 11.79 -7.00 FAIL-Major Risk 18-13-18-13A-18-13A 11,939.36 13,102.00 1,053.56 649.16 412.33 Pass-Major Risk 18-20-18-20-18-20 Out of range 18-21 -18-21 -18-21 13,125.00 12,580.00 1,029.97 687.82 342.92 Pass-Major Risk 18-21A-18-21A-18-21A 13,225.00 12,900.00 975.05 742.64 233.64 Pass-Major Risk 18-25-18-25-18-25 11,492.00 11,700.00 1,289.01 650.30 639.24 Pass-Major Risk 18-25A-18-25A-18-25A 11,509.50 11,700.00 1,293.94 652.15 642.38 Pass-Major Risk 18-25APB1 -18-25APB1 -18-25APB1 11,509.50 11,700.00 1,293.94 652.15 642.38 Pass-Major Risk 18-29-18-29C-18-29C Out of range CC-Min centre to center distance or covergent point,SF-min separation factor,ES-min ellipse separation 4/27/2010 2:29:01PM Page 2 of 17 COMPASS 2003.16 Build 71 All Measurements are from top of Riser 6/28/2010 i a) i) OC 18-12C , top of bag ( \ BAG bttm of bag middle of blind/shear Blind/Shears i............. I I TOTs middle of pipes/slip I 2" combi ram/slips F middle of flow cross Mud Cross Mud Cross I I middle of pipe/slip 2-3/8" combi ram/slips l I TOTs I middle of pipe/slips I 2" pipe/slips I I Swab Valve, J I I Flow Tee Alaska Department of Natural r ources Land Administration System Page 1 o'( NAlaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources I Alaska DNR Case Summary File Type: ADL File Number: 28321 Printable Case File Summary See Township, Range, Section and Acreage? New search U Yes No No LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28321 Search for Status Plat Updates As of 07/07/2010 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E.BENSON BL ATTN: LAND MANAGER- ALASKA ANCHORAGE AK 995196612 Case Type: 784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location:DOG DIV OIL AND GAS Case Status: 35 ISSUED Status Date: 09/14/1965 Total Acres: 2480.000 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: 011N Range: 015E Section: 17 Section Acres: 640 Search Plats Meridian: U Township: 011N Range: 015E Section: 18 Section Acres: 599 Meridian: U Township: O11N Range: 015E Section: 19 Section Acres: 601 Meridian: U Township: O11N Range: 015E Section: 20 Section Acres: 640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION C14-151 T1 IN, R15E, UM 17, 18, 19, 20 2480.00 End of Case Summary Last updated on 07/07/2010. http://dnr.alaska.gov/projects/las/Case_Summary.cfin?FileType=ADL&FileNumber=28321... 7/7/2010 TRANSMITTAL LETTER CHECKLIST WELL NAME ALL/ AP-Aq ' PTD# =:.21:0090.? Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: - :.:47,441,4/04-- ivy POOL: ,er/0, X.14/9 iG 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 thy 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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W a1 O N M V lf) O r N O) O N M V C) (° I� W 0) IE ,- N co V )f) co N. co 0) r' - N N N N N N N N N N C) C) C) C) C) M M 6') M C) U I— ° O ° 0 d o o ° a) o c O C co N CO N CO N U O Ci. V CO CO N O o s c N r 4.. a (D -.I N E d o O l C a O ` U W a Q W a up a 0 a Well History File APPENDIX Infowniation of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history file. 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 info; nation. St 041'2, Sperry-Sun Drilling Services k Act 3 6 LIS Scan Utility $Revision: 3 $ LisLib $Revision: 4 $ Wed Nov 02 16:27:20 2011 Reel Header Service name LISTPE Date 11/11/02 Origin STS Reel Name UNKNOWN Continuation Number 01 Previous Reel Name UNKNOWN Comments STS LIS Writing Library. Scientific Technical Services Tape Header Service name LISTPE Date 11/11/02 Origin STS Tape Name UNKNOWN Continuation Number 01 Previous Tape Name UNKNOWN Comments STS LIS Writing Library. Scientific Technical Services Physical EOF Comment Record TAPE HEADER Prudhoe Bay Unit MWD/MAD LOGS WELL NAME: 18-12C API NUMBER: 500292161503 OPERATOR: BP Exploration (Alaska) , Inc. LOGGING COMPANY: Sperry Drilling TAPE CREATION DATE: 02-NOV-11 JOB DATA MWD RUN 1 MWD RUN 2 MWD RUN 3 JOB NUMBER: -XX-0008274214 -XX-0008274214 -XX-0008274214 LOGGING ENGINEER: BRIAN STEPHE BRIAN STEPHE BRIAN STEPHE OPERATOR WITNESS: DAVE NEWLON DAVE NEWLON GARRETT STAU MWD RUN 4 MWD RUN 5 JOB NUMBER: -XX-0008274214 -XX-0008274214 LOGGING ENGINEER: BRIAN STEPHE BRIAN STEPHE OPERATOR WITNESS: DAVE NEWLON DAVE NEWLON SURFACE LOCATION SECTION: 19 TOWNSHIP: 11N RANGE: 15E FNL: FSL: 4113 FEL: 4552 FWL: ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: 56.29 GROUND LEVEL: 17.04 WELL CASING RECORD OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 1ST STRING 8.500 9. 625 3264.0 2ND STRING 6. 125 7.000 13538.0 3RD STRING PRODUCTION STRING REMARKS: 1. ALL DEPTHS ARE MEASURED DEPTH (MD) UNLESS OTHERWISE NOTED. THESE DEPTHS ARE BIT DEPTHS. 2. ALL VERTICAL DEPTHS ARE TRUE VERTICAL DEPTH (TVD) . ONLY INVERT/ REVERT SECTIONS (IF ANY) GREATER THAN 30' TVD ARE PRESENTED. 3. THIS SIDETRACK EXITED 18-12 BY MEANS OF A WHIPSTOCK, THE TOP OF WHICH WAS AT 3264 'MD/3066'TVD. THE WINDOW WAS MILLED AND ABOUT 20' OF RAT HOLE WERE DRILLED DURING MWD RUN 1. ONLY ROP DATA ARE PRESENTED FOR THIS RUN. 4. MWD RUNS 2-5 COMPRISED DIRECTIONAL, DUAL GAMMA RAY (DGR) UTIL- IZING GEIGER-MUELLER TUBE DETECTORS, ELECTROMAGNETIC WAVE RESISTIVITY-PHASE 4 (EWR-P4) , DRILLSTRING DYNAMICS SENSOR (DDSr) , AND PRESSURE WHILE DRILLING (PWD) . MWD RUN 3 ALSO INCLUDED AT- BIT INCLINATION (ABI) . MWD RUNS 3-5 ALSO INCLUDED COMPENSATED THERMAL NEUTRON POROSITY (CTN) , AZIMUTHAL LITHO-DENSITY (ALD) . RUNS 4, 5 ALSO INCLUDED GEOPILOT ROTARY STEERABLE BHA (GP) . 5. MERGED DIGITAL AND LOG DATA WERE SHIFTED TO A CASED-HOLE GR RUN IN 18-12C ON 2 SEPTEMBER 2011. SHIFTING INSTRUCTIONS WERE PROVIDED BY AN E-MAIL (19 OCTOBER 2011) FROM D. DORTCH (WIPRO/BP) TO BUSTER BRYANT (SD) ,QUOTING AUTHORIZATION FROM WALTER TIFENTAL (BP) . THIS SHIFTED MWD LOG IS THE PDCL FOR 18-12C. ANNOTATIONS AND LOG HEADER DATA RETAIN ORIGINAL DRILLER'S DEPTHS. 6. MWD RUNS 1-5 REPRESENT WELL 18-12C WITH API# 50-029-21615-03. THIS WELL REACHED A TOTAL DEPTH (TD) OF 17,080'MD/8597'TVD. MNEMONICS CURVE DESCRIPTION ROPA AVERAGE RATE OF PENETRATION DGRC DGR COMBINED GAMMA RAY R09P 9 INCH PHASE RESISTIVITY R15P 15 INCH PHASE RESISTIVITY R27P 27 INCH PHASE RESISTIVITY R39P 39 INCH PHASE RESISTIVITY EWXT EWR FORMATION EXPOSURE TIME TNPS CTN POROSITY - SANDSTONE TNFA CTN FAR AVERAGE COUNT RATE TNNA CTN NEAR AVERAGE COUNT RATE ACDL/ALCDLC ALD LCRB COMPENSATED DENSITY CDBH/ALCDBH ALD COMPENSATED DENSITY, B-HALF BIN CDTH/ALCDTH ALD COMPENSATED DENSITY, T-HALF BIN ADCL/ALDCLC ALD LCRB DENSITY CORRECTION DCBH/ALDCBH ALD DENSITY CORRECTION, B-HALF BIN DCTH/ALDCTH ALD DENSITY CORRECTION, T-HALF BIN APEL/ALPELC ALD LCRB Pe FACTOR PEBH/ALPEBH ALD Pe FACTOR, B-HALF BIN PETH/ALPETH ALD Pe FACTOR, T-HALF BIN AHSI/ALHSI ALD HOLE SIZE INDICATOR ALRP/ALRPM ALD RPM (TO HIGHLIGHT SLIDE INTERVALS) PARAMETERS USED IN POROSITY LOG PROCESSING: HOLE SIZE: FIXED AT 6.125 INCHES MUD WEIGHT: 8.6 - 8.85 PPG WHOLE MUD CHLORIDES: 1000 - 35,000 PPM FORMATION WATER SALINITY: 11500 PPM CL FLUID DENSITY: 1.0 G/CC MATRIX DENSITY: 2. 65 G/CC LITHOLOGY: SANDSTONE ALL DATA CURVES ARE SMOOTHED TO A STEP OF 0.5 FT, WITH A WINDOW OF 0. 6 FT, EXCEPT FOR SROP AND SGRC. THESE CURVES ARE SMOOTHED WITH A 1.1 FT WINDOW. GAP FILL IS SET TO 5 FT FOR ALL CURVES. File Header Service name STSLIB.001 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.000 Comment Record FILE HEADER FILE NUMBER: 1 EDITED MERGED MWD Depth shifted and clipped curves; all bit runs merged. DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH GR 3256.0 17038.0 RPS 3258.5 17045.0 RPM 3258.5 17045.0 RPX 3258.5 17045.0 RPD 3258.5 17045.0 ROP 3264.0 17086.0 FET 3264.5 17045.0 FCNT 13451.0 16997.5 NPHI 13451.0 16997.5 NCNT 13451.0 16997.5 DRHO 13465.0 17012.5 CALN 13465.0 17012.5 RHOB 13465.0 17012.5 PEF 13465.0 17012.5 PEF5 13465.5 17012.5 RHOS 13465.5 17012.5 RHO6 13465.5 17012.5 PEF6 13465.5 17012.5 DHO5 13465.5 17012.5 DHO6 13465.5 17012.5 BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) EQUIVALENT UNSHIFTED DEPTH BASELINE DEPTH GR 3256.0 3256.0 3262.0 3262.0 3364.5 3365.0 3407.5 3408.5 3434.0 3435.5 3443.0 3446.0 3454.5 3458.0 3468.5 3472.0 3471.5 3475.0 3492.5 3497.5 3502.5 3506.0 3528.0 3530.5 3537.5 3540.5 3660.0 3663.5 4139.0 4141.5 4453.0 4455.5 4550.5 4552.5 4738.0 4739.5 4781.5 4783.0 4790.5 4792.0 4961.5 4963.5 5029.0 5030.0 5064 .5 5066.0 5446.0 5448.5 5472.5 5473.5 5518.0 5517.5 5675.5 5677.0 5718.0 5722.0 6036.5 6038.0 6043.5 6045.0 6159.0 6161.0 6182.5 6183.5 6228.0 6229.0 6322.0 6322.0 6359.5 6359.5 6378.0 6380.0 6421.5 6422.0 6472.0 6473.0 6566.5 6568.0 6574.5 6575.0 6577.5 6580.5 6587.0 6586.0 6594.5 6594 .0 6609.5 6609.5 6676.0 6676.5 6683.5 6685.0 6693.0 6695.5 6708.5 6711.5 6773.0 6775.0 6776.5 6778.0 6884.0 6885.5 6904.0 6905.0 6909.5 6909.5 6951.0 6951.0 6963.0 6964.0 6971.5 6973.0 6986.5 6987.0 7038.0 7040.5 7109.0 7110.5 7122.5 7123.0 7126.5 7126.5 7160.5 7163.0 7193.5 7197.0 7197.5 7199.5 7240.5 7242.5 7284 .5 7285.0 7314 .5 7315.5 7325.5 7327.0 7336.0 7337.0 7350.5 7351.0 7369.5 7370.0 7423.5 7423.5 7439.0 7438.5 7444 .0 7443.5 7454 .5 7454.5 7462.5 7462.5 7465.5 7465.5 7473.0 7473.5 7480.5 7481.0 7520.0 7519.5 7626.5 7625.5 7638.0 7636.5 7658.5 7658.0 7721.0 7719.5 7746.5 7744.5 7755.0 7753.0 7769.5 7769.5 7774.0 7772.5 7782.0 7782.0 7801.5 7801.5 7811.5 7810.5 7837.5 7836.0 7862.0 7860.0 7877.5 7875.5 7900.0 7897.5 7914.5 7914.0 7926.0 7925.5 7929.5 7928.5 7955.5 7954.0 7980.0 7981.5 7990.0 7988.5 8011.5 8011.0 8173.5 8174.0 8201.5 8200.5 8215.0 8216.0 8219.5 8220.5 8309.5 8309.0 8317.0 8316.5 8334.0 8333.0 8408.5 8408.0 8456.0 8456.5 8515.5 8516.0 8602.0 8601.5 8636.5 8635.5 8674.5 8673.5 8704.0 8703.0 8755.0 8754.0 8770.5 8769.5 8779.5 8778.5 8799.5 8798.5 8916.0 8914.0 8925.5 8923.5 8984.5 8983.0 8990.0 8988.0 9010.0 9008.5 9072.0 9072.5 9115.0 9114.5 9154.0 9152.5 9191.5 9191.0 9203.5 9202.5 9208.5 9206.5 9324.0 9323.5 • 9356.0 9355.5 9410.0 9407.0 9452.0 9450.5 9476.5 9475.0 9508.5 9506.5 9514.0 9512.0 9521.0 9518.5 9569.5 9568.0 9617.5 9616.0 9646.5 9644.0 9772.0 9770.0 9780.5 9777.5 9801.0 9797.0 9807.5 9804 .0 9826.0 9823.5 9861.0 9857.0 9873.0 9869.0 9895.0 9892.0 9908.0 9905.5 9934 .5 9929.5 9940.5 9936.5 9944 .0 9939.5 9947.5 9943.5 9953.0 9948.5 9963.0 9961.0 9979.0 9976.0 9987.0 9985.0 10029.0 10026.0 10047.0 10043.0 10130.0 10125.5 10152.0 10150.0 10154.5 10152.0 10225.0 10221.5 10247.0 10244.0 10294.5 10291.5 10312.5 10309.0 10330.0 10326.5 10412.5 10409.0 10448.5 10443.5 10549.0 10544.0 10570.5 10566.5 10617.0 10612.0 10626.5 10622.5 10633.5 10629.5 10642.5 10638.0 10653.5 10648.5 10751.5 10746.5 10822.5 10818.0 10848.5 10843.5 10888.0 10883.0 10964.0 10959.0 10996.0 10991.0 11020.0 11014.5 11081.5 11075.5 11084.0 11078.0 11086.5 11081.0 17086.0 17080.0 MERGED DATA SOURCE PBU TOOL CODE BIT RUN NO MERGE TOP MERGE BASE MWD 1 3264.0 3301.0 MWD 2 3301.0 13539.0 MWD 3 13539.0 14318.0 MWD 4 14318.0 14469.0 MWD 5 14469.0 17080.0 REMARKS: MERGED MAIN PASS. $ Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 .1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 RHOS MWD G/CC 4 1 68 4 2 RHOB MWD G/CC 4 1 68 8 3 RHO6 MWD G/CC 4 1 68 12 4 DHO5 MWD G/CC 4 1 68 16 5 DRHO MWD G/CC 4 1 68 20 6 DHO6 MWD G/CC 4 1 68 24 7 CALN MWD IN 4 1 68 28 8 PEF5 MWD B/E 4 1 68 32 9 PEF MWD B/E 4 1 68 36 10 PEF6 MWD B/E 4 1 68 40 11 GR MWD API 4 1 68 44 12 FET MWD HR 4 1 68 48 13 RPX MWD OHMM 4 1 68 52 14 RPS MWD OHMM 4 1 68 56 15 RPM MWD OHMM 4 1 68 60 16 RPD MWD OHMM 4 1 68 64 17 ROP MWD FPH 4 1 68 68 18 FCNT MWD CP30 4 1 68 72 19 NCNT MWD CP30 4 1 68 76 20 NPHI MWD PU 4 1 68 80 21 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 3256 17086 10171 27661 3256 17086 RHO5 MWD G/CC 0.043 2. 945 2.30175 7056 13465.5 17012.5 RHOB MWD G/CC 0. 635 3.336 2.3276 7096 13465 17012.5 RHO6 MWD G/CC 0.262 2.766 2.28827 6258 13465.5 17012.5 DHO5 MWD G/CC -3.644 0.465 -0.00578841 7056 13465.5 17012.5 DRHO MWD G/CC -3.445 0.774 0.0216643 7096 13465 17012.5 DHO6 MWD G/CC -2.929 0. 681 0.0924925 6258 13465.5 17012.5 CALN MWD IN 5.63 15. 64 6.12865 6093 13465 17012.5 PEF5 MWD B/E 0.26 16.28 2.22952 7066 13465.5 17012.5 PEF MWD B/E 0.23 15.79 2.31987 7096 13465 17012.5 PEF6 MWD B/E 0.24 16.05 2.06509 6309 13465.5 17012.5 GR MWD API 13.19 525.96 85.6655 27565 3256 17038 FET MWD HR 0.16 297.41 2.81905 27562 3264 .5 17045 RPX MWD OHMM 0.15 2000 18.3942 27574 3258.5 17045 RPS MWD OHMM 0.19 2000 39.273 27574 3258.5 17045 RPM MWD OHMM 0.34 2000 68.8272 27574 3258.5 17045 RPD MWD OHMM 0.02 2000 94.2968 27574 3258.5 17045 ROP MWD FPH 0.07 445.58 203.881 27645 3264 17086 FCNT MWD CP30 59.84 1552.42 636.098 7094 13451 16997.5 NCNT MWD CP30 11797.1 43839.5 31219.4 7094 13451 16997.5 NPHI MWD PU 9.53 109.91 26.1959 7094 13451 16997.5 First Reading For Entire File 3256 Last Reading For Entire File 17086 File Trailer Service name STSLIB.001 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Next File Name STSLIB.002 Physical EOF File Header Service name STSLIB.002 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.001 Comment Record FILE HEADER FILE NUMBER: 2 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 1 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH ROPA 3264.0 3301.0 LOG HEADER DATA DATE LOGGED: 20-AUG-11 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 4.3 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 3301.0 TOP LOG INTERVAL (FT) : 3264.0 BOTTOM LOG INTERVAL (FT) : 3301.0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 32. 9 MAXIMUM ANGLE: 32. 9 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : 8.500 DRILLER'S CASING DEPTH (FT) : 3264.0 BOREHOLE CONDITIONS MUD TYPE: Sea Water MUD DENSITY (LB/G) : 8.50 MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3) : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : MUD AT MAX CIRCULATING TERMPERATURE: • MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 .1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWDO10 FPH 4 1 68 4 2 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 3264 3301 3282.5 75 3264 3301 ROP MWD010 FPH 0.07 15.94 9.39653 75 3264 3301 First Reading For Entire File 3264 Last Reading For Entire File 3301 File Trailer Service name STSLIB.002 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Next File Name STSLIB.003 Physical EOF File Header Service name STSLIB.003 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.002 Comment Record FILE HEADER FILE NUMBER: 3 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 2 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH DGRC 3256.0 13494.0 R39P 3258.5 13486.0 R27P 3258.5 13486.0 R15P 3258.5 13486.0 R09P 3258.5 13486.0 EWXT 3264.5 13486.0 ROPA 3301.5 13539.0 LOG HEADER DATA DATE LOGGED: 28-AUG-11 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 88.20 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 13539.0 TOP LOG INTERVAL (FT) : 3301.0 BOTTOM LOG INTERVAL (FT) : 13539.0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 27.2 MAXIMUM ANGLE: 66.2 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY 11306054 EWR4 ELECTROMAG. RESIS. 4 10785827 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : 8.500 DRILLER'S CASING DEPTH (FT) : 3264.0 BOREHOLE CONDITIONS MUD TYPE: Other MUD DENSITY (LB/G) : 10.05 MUD VISCOSITY (S) : 53.0 MUD PH: 9.3 MUD CHLORIDES (PPM) : 1000 FLUID LOSS (C3) : 5.0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : 2. 600 85.0 MUD AT MAX CIRCULATING TERMPERATURE: 1. 630 140.0 MUD FILTRATE AT MT: 2.400 85.0 MUD CAKE AT MT: 2.700 85.0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet • Data Reference Point Undefined Frame Spacing 60 .1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 GR MWD020 API 4 1 68 4 2 FET MWD020 HR 4 1 68 8 3 RPX MWD020 OHMM 4 1 68 12 4 RPS MWD020 OHMM 4 1 68 16 5 RPM MWD020 OHMM 4 1 68 20 6 RPD MWD020 OHMM 4 1 68 24 7 ROP MWD020 FPH 4 1 68 28 8 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 3256 13539 8397.5 20567 3256 13539 GR MWD020 API 13.19 338.45 91.1062 20477 3256 13494 FET MWD020 HR 0.16 55.39 0.992195 20444 3264.5 13486 RPX MWD020 OHMM 0.73 2000 3.38337 20456 3258.5 13486 RPS MWD020 OHMM 0.74 2000 3.44245 20456 3258.5 13486 RPM MWD020 OHMM 0.73 2000 3.84851 20456 3258.5 13486 RPD MWD020 OHMM 0.02 2000 3.90056 20456 3258.5 13486 ROP MWD020 FPH 0.08 445.58 223.41 20476 3301.5 13539 First Reading For Entire File 3256 Last Reading For Entire File 13539 File Trailer Service name STSLIB.003 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Next File Name STSLIB.004 Physical EOF File Header Service name STSLIB.004 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO I Previous File Name STSLIB.003 Comment Record FILE HEADER FILE NUMBER: 4 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 3 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH TNFA 13445.5 14224.0 �I TNPS 13445.5 14224.0 TNNA 13445.5 14224.0 APEL 13459.5 14238.5 ADCL 13459.5 14238.5 ACDL 13459.5 14238.5 AHSI 13459.5 14178.0 CDTH 13460.0 14186.0 DCTH 13460.0 14186.0 PETH 13460.0 14186.0 PEBH 13460.0 14238.5 DCBH 13460.0 14238.5 CDBH 13460.0 14238.5 R27P 13486.5 14258.5 R15P 13486.5 14258.5 RO9P 13486.5 14258.5 R39P 13486.5 14258.5 EWXT 13486.5 14258.5 DGRC 13494 .5 14252.0 ROPA 13539.5 14318.0 LOG HEADER DATA DATE LOGGED: 10-SEP-11 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 88.20 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 14318.0 TOP LOG INTERVAL (FT) : 13539.0 BOTTOM LOG INTERVAL (FT) : 14318.0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 31.1 MAXIMUM ANGLE: 84.4 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY 11233313 CTN COMP THERMAL NEUTRON 11301941 EWR4 Electromag Resis. 4 10493032 ALD Azimuthal Litho-Dens 10610622 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : 6.125 DRILLER'S CASING DEPTH (FT) : 13538.0 BOREHOLE CONDITIONS MUD TYPE: Other MUD DENSITY (LB/G) : 8. 65 MUD VISCOSITY (S) : 49.0 MUD PH: 10.0 MUD CHLORIDES (PPM) : 31000 FLUID LOSS (C3) : 4 .0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : .120 70.0 MUD AT MAX CIRCULATING TERMPERATURE: .070 119.7 MUD FILTRATE AT MT: .110 70.0 MUD CAKE AT MT: .130 70.0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : # I TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: $ Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 .1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 RHO5 MWD030 G/CC 4 1 68 4 2 RHOB MWD030 G/CC 4 1 68 8 3 RHO6 MWD030 G/CC 4 1 68 12 4 DHO5 MWD030 G/CC 4 1 68 16 5 DRHO MWD030 G/CC 4 1 68 20 6 DHO6 MWD030 G/CC 4 1 68 24 7 CALN MWD030 IN 4 1 68 28 8 PEF5 MWD030 B/E 4 1 68 32 9 PEF MWD030 B/E 4 1 68 36 10 PEF6 MWD030 B/E 4 1 68 40 11 GR MWD030 API 4 1 68 44 12 FET MWD030 HR 4 1 68 48 13 RPX MWD030 OHMM 4 1 68 52 14 RPS MWD030 OHMM 4 1 68 56 15 RPM MWD030 OHMM 4 1 68 60 16 RPD MWD030 OHMM 4 1 68 64 17 ROP MWD030 FPH 4 1 68 68 18 FCNT MWD030 CP30 4 1 68 72 19 NCNT MWD030 CP30 4 1 68 76 20 NPHI MWD030 PU 4 1 68 80 21 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 13445.5 14318 13881.8 1746 13445.5 14318 RHOS MWD030 G/CC 0.043 2. 945 2.17606 1519 13460 14238.5 RHOB MWD030 G/CC 0.635 3.336 2.202 1559 13459.5 14238.5 RHO6 MWD030 G/CC 0.262 2. 696 2.07129 721 13460 14186 DHO5 MWD030 G/CC -3. 644 0.465 -0.0595155 1519 13460 14238.5 DRHO MWD030 G/CC -3.445 0.774 -0.0462957 1559 13459.5 14238.5 DHO6 MWD030 G/CC -2. 929 0. 681 -0.0614008 721 13460 14186 CALN MWD030 IN 5.63 15. 64 6.02842 556 13459.5 14178 1 PEF5 MWD030 B/E 0.26 16.28 2.99556 1529 13460 14238.5 PEF MWD030 B/E 0.23 15.79 3.06813 1559 13459.5 14238.5 PEF6 MWD030 B/E 0.24 16.05 3.71471 772 13460 14186 GR MWD030 API 20.2 525. 96 67.0553 1516 13494.5 14252 FET MWD030 HR 1.12 297.41 23.4777 1545 13486.5 14258.5 RPX MWD030 OHMM 0.15 1761.17 56.4956 1545 13486.5 14258.5 RPS MWD030 OHMM 0.19 2000 167.438 1545 13486.5 14258.5 RPM MWD030 OHMM 0.34 2000 226.153 1545 13486.5 14258.5 RPD MWD030 OHMM 0.31 2000 456.841 1545 13486.5 14258.5 ROP MWD030 FPH 1.37 302.95 66. 9088 1558 13539.5 14318 FCNT MWD030 CP30 59.84 1552.42 689.768 1558 13445.5 14224 NCNT MWD030 CP30 11797.1 43839.5 29142.5 1558 13445.5 14224 NPHI MWD030 PU 9.53 109.91 26.7259 1558 13445.5 14224 First Reading For Entire File 13445.5 Last Reading For Entire File 14318 File Trailer Service name STSLIB.004 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Next File Name STSLIB.005 Physical EOF File Header Service name STSLIB.005 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.004 Comment Record FILE HEADER FILE NUMBER: 5 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 4 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH TNNA 14224.5 14381.0 TNPS 14224 .5 14381.0 TNFA 14224.5 14381.0 PEBH 14239.0 14396.0 DCBH 14239.0 14396.0 CDTH 14239.0 14396.0 AHSI 14239.0 14396.0 DCTH 14239.0 14396.0 ADCL 14239.0 14396.0 ACDL 14239.0 14396.0 CDBH 14239.0 14396.0 APEL 14239.0 14396.0 PETH 14239.0 14396.0 DGRC 14252.5 14421.5 R15P 14259.0 14428.5 R39P 14259.0 14428.5 R09P 14259.0 14428.5 R27P 14259.0 14428.5 EWXT 14259.0 14428.5 ROPA 14318.5 14469.0 $ LOG HEADER DATA DATE LOGGED: 16-SEP-11 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 88.20 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 14469.0 TOP LOG INTERVAL (FT) : 14318.0 BOTTOM LOG INTERVAL (FT) : 14469.0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 89.2 MAXIMUM ANGLE: 90.4 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY 10494689 CTN COMP THERMAL NEUTRON 11219437 EWR4 Electromag Resis. 4 10451835 ALD Azimuthal Litho-Dens 11433529 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : 6.125 DRILLER'S CASING DEPTH (FT) : 13538.0 BOREHOLE CONDITIONS MUD TYPE: Polymer MUD DENSITY (LB/G) : 8.80 MUD VISCOSITY (S) : 54.0 MUD PH: 9.7 MUD CHLORIDES (PPM) : 34000 FLUID LOSS (C3) : 4 .0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : .140 80.0 MUD AT MAX CIRCULATING TERMPERATURE: .070 156.6 MUD FILTRATE AT MT: .120 80.0 MUD CAKE AT MT: .150 80.0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 .1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 RHO5 MWD040 G/CC 4 1 68 4 2 RHOB MWD040 G/CC 4 1 68 8 3 RHO6 MWD040 G/CC 4 1 68 12 4 DHO5 MWD040 G/CC 4 1 68 16 5 DRHO MWD040 G/CC 4 1 68 20 6 DHO6 MWD040 G/CC 4 1 68 24 7 CALN MWD040 IN 4 1 68 28 8 PEF5 MWD040 B/E 4 1 68 32 9 PEF MWD040 B/E 4 1 68 36 10 PEF6 MWD040 B/E 4 1 68 40 11 GR MWD040 API 4 1 68 44 12 FET MWD040 HR 4 1 68 48 13 RPX MWD040 OHMM 4 1 68 52 14 RPS MWD040 OHMM 4 1 68 56 15 RPM MWD040 OHMM 4 1 68 60 16 RPD MWD040 OHMM 4 1 68 64 17 ROP MWD040 FPH 4 1 68 68 18 FCNT MWD040 CP30 4 1 68 72 19 NCNT MWD040 CP30 4 1 68 76 20 NPHI MWD040 PU 4 1 68 80 21 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 14224.5 14469 14346.8 490 14224.5 14469 RHO5 MWD040 G/CC 2.104 2.447 2.22162 315 14239 14396 RHOB MWD040 G/CC 2.136 2.455 2.26105 315 14239 14396 RHO6 MWD040 G/CC 2.118 2.45 2.27273 315 14239 14396 DHO5 MWD040 G/CC -0.016 0.132 0.0354635 315 14239 14396 DRHO MWD040 G/CC -0.002 0.132 0.0712952 315 14239 14396 DHO6 MWD040 G/CC 0.03 0.212 0.123854 315 14239 14396 CALN MWD040 IN 5. 96 6.51 6.2233 315 14239 14396 PEF5 MWD040 B/E 1.18 4.08 1.86127 315 14239 14396 PEF MWD040 B/E 1.19 4.19 1. 91676 315 14239 14396 PEF6 MWD040 B/E 1.15 3.39 1.87806 315 14239 14396 GR MWD040 API 32.27 69.13 53.4836 339 14252.5 14421.5 FET MWD040 HR 0.34 126.56 45.7783 340 14259 14428.5 RPX MWD040 OHMM 30.5 118.02 77.575 340 14259 14428.5 RPS MWD040 OHMM 62.03 214.96 145. 912 340 14259 14428.5 RPM MWD040 OHMM 106.01 218.88 161.139 340 14259 14428.5 RPD MWD040 OHMM 123.72 254 173.766 340 14259 14428.5 ROP MWD040 FPH 2.51 183.11 99.3119 302 14318.5 14469 FCNT MWD040 CP30 434.71 592.34 513.818 314 14224.5 14381 NCNT MWD040 CP30 27069.3 31075.2 29155.2 314 14224.5 14381 NPHI MWD040 PU 25.76 31.34 28.2003 314 14224.5 14381 First Reading For Entire File 14224.5 Last Reading For Entire File 14469 File Trailer Service name STSLIB.005 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Next File Name STSLIB.006 Physical EOF File Header Service name STSLIB.006 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.005 Comment Record FILE HEADER FILE NUMBER: 6 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 5 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH TNFA 14381.5 16991.5 • TNNA 14381.5 16991.5 TNPS 14381.5 16991.5 PEBH 14396.5 17006.5 APEL 14396.5 17006.5 PETH 14396.5 17006.5 AHSI 14396.5 17006.5 DCTH 14396.5 17006.5 CDBH 14396.5 17006.5 ADCL 14396.5 17006.5 DCBH 14396.5 17006.5 CDTH 14396.5 17006.5 ACDL 14396.5 17006.5 DGRC 14422.0 17032.0 R39P 14429.0 17039.0 R15P 14429.0 17039.0 R09P 14429.0 17039.0 EWXT 14429.0 17039.0 R27P 14429.0 17039.0 ROPA 14469.5 17080.0 LOG HEADER DATA DATE LOGGED: 19-SEP-11 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 88.20 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 17080.0 TOP LOG INTERVAL (FT) : 14469.0 BOTTOM LOG INTERVAL (FT) : 17080.0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 86.9 MAXIMUM ANGLE: 96.6 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY 10436096 CTN COMP THERMAL NEUTRON 11301941 EWR4 Electromag Resis. 4 10486771 ALD Azimuthal Litho-Dens 10610622 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : 6.125 DRILLER'S CASING DEPTH (FT) : 13538.0 BOREHOLE CONDITIONS MUD TYPE: Polymer MUD DENSITY (LB/G) : 8. 90 MUD VISCOSITY (S) : 49.0 MUD PH: 10.0 MUD CHLORIDES (PPM) : 35000 FLUID LOSS (C3) : 4 .0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : .120 80.0 MUD AT MAX CIRCULATING TERMPERATURE: .070 148.9 MUD FILTRATE AT MT: .110 80.0 MUD CAKE AT MT: .160 80.0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: $ Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 .1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 RHO5 MWD050 G/CC 4 1 68 4 2 RHOB MWD050 G/CC 4 1 68 8 3 RHO6 MWD050 G/CC 4 1 68 12 4 DHO5 MWD050 G/CC 4 1 68 16 5 DRHO MWD050 G/CC 4 1 68 20 6 DHO6 MWD050 G/CC 4 1 68 24 7 CALN MWD050 IN 4 1 68 28 8 PEF5 MWD050 B/E 4 1 68 32 9 PEF MWD050 B/E 4 1 68 36 10 PEF6 MWD050 B/E 4 1 68 40 11 GR MWD050 API 4 1 68 44 12 FET MWD050 HR 4 1 68 48 13 RPX MWD050 OHMM 4 1 68 52 14 RPS MWD050 OHMM 4 1 68 56 15 RPM MWD050 OHMM 4 1 68 60 16 RPD MWD050 OHMM 4 1 68 64 17 ROP MWD050 FPH 4 1 68 68 18 FCNT MWD050 CP30 4 1 68 72 19 NCNT MWD050 CP30 4 1 68 76 20 NPHI MWD050 PU 4 1 68 80 21 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 14381.5 17080 15730.8 5398 14381.5 17080 RHO5 MWD050 G/CC 2.081 2.827 2.34319 5221 14396.5 17006.5 RHOB MWD050 G/CC 2.113 3.052 2.36917 5221 14396.5 17006.5 RHO6 MWD050 G/CC 2.07 2.766 2.31922 5221 14396.5 17006.5 DHO5 MWD050 G/CC -0. 119 0.132 0.00735204 5221 14396.5 17006.5 DRHO MWD050 G/CC -0.192 0.279 0.0389674 5221 14396.5 17006.5 DHO6 MWD050 G/CC -0.027 0.325 0.111867 5221 14396.5 17006.5 CALN MWD050 IN 5.77 7.71 6.13369 5221 14396.5 17006.5 PEF5 MWD050 B/E 1.03 6.7 2.02753 5221 14396.5 17006.5 PEF MWD050 B/E 0.94 8.02 2. 12085 5221 14396.5 17006.5 I PEF6 MWD050 B/E 0. 98 6.4 1.83251 5221 14396.5 17006.5 GR MWD050 API 32.89 183.28 71.8645 5221 14422 17032 FET MWD050 HR 0.21 35.08 1.07359 5221 14429 17039 RPX MWD050 OHMM 4.3 2000 62.1013 5221 14429 17039 RPS MWD050 OHMM 3. 97 2000 134.812 5221 14429 17039 1 RPM MWD050 OHMM 3.64 2000 270.908 5221 14429 17039 RPD MWD050 OHMM 3.79 2000 335.979 5221 14429 17039 ROP MWD050 FPH 0.51 213.2 177.132 5222 14469.5 17080 FCNT MWD050 CP30 439.07 801.48 627.419 5221 14381.5 16991.5 NCNT MWD050 CP30 26959. 6 35590.2 31963.6 5221 14381.5 16991.5 NPHI MWD050 PU 21.79 31.92 25. 9183 5221 14381.5 16991.5 First Reading For Entire File 14381.5 Last Reading For Entire File 17080 File Trailer Service name STSLIB.006 Service Sub Level Name Version Number 1 0 0 Date of Generation 11/11/02 Maximum Physical Record65535 File Type LO Next File Name STSLIB.007 Physical EOF Tape Trailer Service name LISTPE Date 11/11/02 Origin STS Tape Name UNKNOWN Continuation Number 01 Next Tape Name UNKNOWN Comments STS LIS Writing Library. Scientific Technical Services Reel Trailer Service name LISTPE Date 11/11/02 Origin STS Reel Name UNKNOWN Continuation Number 01 Next Reel Name UNKNOWN Comments STS LIS Writing Library. Scientific Technical Services Physical EOF Physical EOF End Of LIS File
