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212-111
IIISTATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMON REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon 0 Plug Perforations 0 Fracture Stimulate 0 Pull Tubing 0 Operations shutdown ❑ Suspend 0 Perforate ® Other Stimulate 0 Alter Casing 0 Change Approved Program 0 Plug for Redrill 0 Perforate New Pool 0 Repair Well 0 Re-enter Susp Well 0 Other: ❑ 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 212-111 3. Address: P.O.Box 196612 Anchorage, Development 11 Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-21419-01-00 7. Property Designation(Lease Number): ADL 0028260 8. Well Name and Number. PBU S-12B 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: RECEIVED Total Depth: measured 12776 feet Plugs measured 11570 feet true vertical 8770 feet Junk measured 12720 feet SEP p 2 0 2017 Effective Depth: measured 11570 feet Packer measured 9193 feet G l G+ true vertical 8775 feet Packer true vertical 8240.68 feet AOG C Casing: Length: Size: MD: TVD: Burst Collapse: Structural Conductor 77 20"x 30" 40-117 40-117 Surface 2657 13-3/8"72#L-80 38-2695 38-2695 4930 2670 Intermediate 9625 9-5/8"47#L-80 37-9662 37-8622 6870 4760 Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth: Measured depth: See Attachment feet True vertical depth: See Attachment feet NOV 0 12A117.J Tubing(size,grade,measured and true vertical depth) 5-1/2"17#L-80 35-9330 35-8351 Packers and SSSV(type,measured and See Attachment See Attachment See Attachment true vertical depth) 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: 33 0 192 1356 243 Subsequent to operation: - 402 253 3869 1476 244 14.Attachments:(required per 20 AAC 25.070.25.071,&25.283) 15.Well Class after work: Daily Report of Well Operations m Exploratory ❑ Development ® Service 0 Stratigraphic 0 Copies of Logs and Surveys Run 0 16.Well Status after work: Oil II Gas 0 WDSPL 0 Printed and Electronic Fracture Stimulation Data 0 GSTOR ❑ WINJ 0 WAG 0 GINJ 0 SUSP 0 SPLUG 0 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: N/A Authorized Name: Bergene,Matthew Contact Name: Bergene,Matthew Authorized Title: Production Engineer Challenger Contact Email: Matthew.Bergene@bp.com ( Authorized Signature: Date: Sell 1— Dhntact Phone: +1 9075644849 Form 10-404 Revised 04/2017 v /O l 4 /I / ® \1 �(a�f/,IZ B D ` ,,/ fir"? a t .Of Submit Original Only • • Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, AK 99501-3572 RECEIVED RE: BP Exploration (Alaska), Inc. SEP 2 0 2017 Report of Sundry Well Operations Summary AOGCC September 20, 2017 To Whom it May Concern: Attached please find the Report of Sundry Well Operations for Adding of Perforations for Well S-12B, PTD # 212-111. Sincerely, BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Attachment: Form 10-404 BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage,AK 99519-6612 • • O O 0R O- co 000 p N OQ CNO C.) ar O O c O 0O M m V cO0 � 0N- N. N M Nt N CO I� •• CO O M M N c0 00 00 co cx F— 0 00 r--• N N Iss to TtMMC •0- CO 00 00 r LO N N ct N co C M M M CO CO co ( -.4 0) 0) 0) L 0) C.) 0 LY O O co N. O N tc) C V) � MM0) 0) NM M CO e' X0 0o - J co aJ. O CoJI a. O 00 J = Q1 M N 4k 4,k J .N N x = 0 co baO � NNaoN V c? 1n I� t�A N d I-- 0) cc W Q CW o ' 0 W V O u cr Z Z W W W W m O D L— Z Z Z , U (/) ZZi = = I— • • • d H R Ca CO CO CD N M CO toM CO N t I- CO Lo N CO CO CO . N V • O CO co0ci co � N- N- N- CO CoO N- 0 0 Co CO Co Co CO Co O O Co CO Co O. O N 1- M O) N Cf) N- M L N Cp to N CO . '- N O M tCjMOOONrcsi O m O co co CO CO N- ~ N- N- CO CO W 0 CO N. N- N- N- N- Co N- ti N- ti > ▪ CO CC) CO CO CO C1O O CO CO CO C1O 0 0 O• 0 W Z COLI LI W 0 01 H ~ O a W 55le UO > (5 Y Y m O 0 CO CV N N N 0 0 Lo 0 CO - - J U U W a W ++• Lo Co Lo CO 1 N CA O O) J J Q Q W = OW CD NLUCO < < .7(1 W a a z N N N CV 0 0 0 J W W O -1 (7 H Z Z Z = D a W a L 2 W W 111 a W I- 0 CO 2220 nv�i ¢ ia iC Q a. � '- r CO CO CO N N N 0 LO 0 0 CO O CO CO 00 Lo CO A- 0) Lo 0) N n- o m G O N- CV N MCO 0) Co LO N N N L a d - N I 1-- O a J a 2 2 2 O cn cn cn m d CL 0 0 C 2 u_ u_ LL LL. LL LL (/) (/) (/) (/) (/) aaaaaaaaaaCt. QQQQQQQmmmC� m 0 m a. 0 W J m W 0 R N- LoLotoLc, CO in 0 0 co ci 0 0 0 0 0 0 0 0 0 _j J Z < O NNN N N N N CV N CV N Z LL a s -J q W N N (NI CO Cr) N N N N N N 00 W W WN N a m Z a c7 (5 0 W W 00. CO CO CO m 0 2 E J J 0 a w w ¢ ammE�. LIcncnam m E co z m COCOCOCOm m COCOm m CV N N N N N N N N N N dam d O00O W U- CO/ / v / n v / 6 / 6 < 0LL CO a a' . • • Packers and SSV's Attachment PBU S-12B SW Name Type MD TVD Depscription S-12B TBG PACKER 9193.26 8240.68 5-1/2"TIW HBBP Packer S-12B PACKER 9253 8288.88 5-1/2" Baker LT Packer j • • co � m E a) 2 co co , mots a) a = — 0 2 0 0 a m c7 0 m a) _2 m Q o6 o6 0 m .e O m c a) Z U � °o ,= t (naci . E O * m O W _ • rnti a) o Qa o° �io� WCi_ CO d '- aai 2 iii o H Z o 0 Q (n0 II dcr) 1--- -1 X . Qrn I- -J �n m o _N C7 N X W N +. V O N• 1 `- `C 7 co _J 13 06 co O 3 co _2 a N d MQ O `) ca 0 aL°i 2 �( E N 3 W •L q' L il- W a) .4 - N 3w ov °� � O Co UJ j Z ° o S aiCL M .5 �omwO >- QH m 0)0 -cio o EZ VNvs < a) aW O ° o E o> a2 ° Q 2 1. O ami t N o c > m t aL°i 2 coN •-�ti• a c i- 0 co v.) - o - 0Nd Q • o 0- n— xvm a yo' E o - = U ,- = m 0 a a N O co at) EL o o f w o�o o E ° 0 .,� c o m . 3 H- > w.. L o J ° J 3 o U .0 a J L W O m � � H2 '� � m �2p ,t o o_� as -5.E2 ECl- a o ID E ,- c 22 Zre 0 sZaa) * 0_ coo E — a0I, 0. • ° c my >. - Yow0 0 (n � N- (n to' E o - 0) 4t coE .al CCU © 2 }' a � N � F°- 00 � � c) ci � coo a) o ,= J 0 � �� O EN O J - ° or3N = - > c 0 Q (nZ _ `- CO _, eL M � O � ' (n0 O � • a) _c as Zm0u_ D (n `a) o O g_ocnamo — rna°) a= ze- * a � � (� o aEi � Ud ° Umb � = � U DU .c � m Cu) ci) o U x - a) rnMh- a 5 I o E Y J > I--- I- - 3. --1 •- 1-- c r W > Z Z NJ co U C co \ x N '.C--. a) = 3 w M U U 1-15 2 ? OOZ � W � � U j ca cZoA 0 � .0 � 4 • oa-- o U) R. c9 * QJ * ~ * F- - 0VcV � � U c `C � N- o iit \ : LL : : rev) : Oa : ULo liaa 3 .- oi UUa cn -pcNA- CL * b .- � W I- Q r- I` r` 0 0 TS a I- N N N N C\I � � ON- n N N N CO V03 0 CO 00 W Q .. TREE= 4-1/16"CM/ • SA NOTES: "'DUE TO INSUFF1Cle4T OIL COLUMN 1WELLIEAD= Mr EVOY S-1 2 B 5-12 WAS P&A'D ON 09/27/84.S-12A WAS DRILLED 20' ACTUATOR= BAKER C SE'"-'WELL ANGLE<70"@ 9965''''"2-7/8"CHROME NMAL KB.ELE 72 9T I - I LNR"'" BF B_EV= 36.72 . . KOP=' 2966 . j 2018' 1--i5-1/7GAROMS LITSSSoLsceaLANDsNP,ID=-4,567 Max Angle= 96"@ 10966 20"CONDUCTOR 11—I —100 Datum MD= 9964' Datum TVD= 8800'SS S5 5512 5188 38 OTIS LBO DOME I RM 16 12/11/13 12/11/13DATE 1 13-3/8"CSG, 72#, L-80 BUTT,113= 12.347" H 6T 2699' HA 3'43204 371/20D21 IDEVTY PEVLV LATO-1 P 10 O1' LBD DOfF Rm I 4 ,7210 65861 31 I OTIS LBO DOLE RM 16 12/11/131 Minimum ID = 2.370" @9253' l , I 3 ,8157 7394 OTIS LBD DMY RA 0 07/01/93 15-1/2" WFD ER LTP II i I 1 sIO: i i 1 i 2 !8703178.40I 35 OTIS LBD CMY RA 0 07/01/93' 1 9010180911 35 OTISLBD1 SO 1 RM 24 12/11/13 19118' j-5-1/2-OTIS XA SLD SLV,ID=4_562" 1 I I [ 9176' j—71W S6R TBG SEAL ASSY I I 9193' —9-5/8"X 5-1/2"T1W I-4313P PKR,ID=4,750" r 9246' 1-15-1/2'011S X MR ID=4.562" 1 1 5-1/2"WFD ER LTP,13=2.3r( 0/15/12) H 9253' 1 9258' -3.70"BKR DEPLOY SLV,I)=3.00" I 1 I I 9279' j—3-1/2"HES X NP,ID=2.813" i 1 ,5-1/7 T8G-PC, 17#,L-80 BUTT-M, 'H 9329' 1 .0232 bpf,ID=4.897 9286' 1-15-1/2"OTIS XN WO=4.455" I BEHIND --"" 1- ' 3-1/2"LM ,9.3#,L-80 STL,.0087 bpf,ID=Z9330I-A5-1/2"TIWWLEG,0=4.897 997 — 9332' 1 1CT LNR I 9338' il RIAD TT LOGGE)12/08/86 1TOP OF 4-1/2"LP — 9410' I 1 , , „ , '3-1/ ' -3/16"X0.ID=2_786"_I 2. 9943:02: Hia..5/82.xX 73.6 \I TO TACK SLV,ID=? 9-5/8'CSG,47#,L-80 BUTT,ID=0.681" .--r- 9662' I 9416' I-19-5/8"X 7"BOT LIIR HGR,ID=/ [4:1/7 X 7"41.4-IPSTOCK(09/07/12) 1-1 9834' II"LNR,264,L-80 BUTT, 0383 bpf,ID=6.276" I—T —9834 _I MILLOUT WINDOW (S-12B) 9834'-9841' 3-1/4"LNR,6 6#,L-80 TC11,.0079 bpf.ID=2.850 1--I 10100' 1 w/3-3/16",6.2#,ICI CONNECDONS,0=2.786" PERFORATION SUMMARY , L 10100' j-tr3-3/16"X 2-7/8"X0,ID=2.377" REF LOG:SLB GRICCUTIWTNF ON 10/03/12 ANGLE AT TOP PERE 95°@ 10686' W:4., !IIIC ' Note Refer to Roduction DB for historical perf data —10396 _I--17TOC(09/01/15)I SIZE SWI NTBWAL lOpn/Sqz SHOT 1 SOZ 2" I 6 I 10686- 10750 0 08/23/171) 1 I • ! 11670' --4 i (2-7/8"Ct3P(11/29/15)] 7 ' 6 11156-111188I 0 08/23/171 --t:Ite5 -------------' 1 1 I 2" $ 6 11188- 11252! 0 08/22/17' .4 ! j 2" I 6 11252-1113721 0 11/30/15, 7 ; 6 11690 - 117401 S 10/03/12102/13/15 I i 7 i 6 j 11955- 12020 C 10/03/121 ID,1 1 1 2' 6 12090- 122951 C 10/03/12, 2" 6 12520-112560 C 10/03/121 7 1 6 12616- 12696! C 10/03/121 A P1--31 ,4.,.. :ii , —12720' ---1FISH:CBP PUSHED TO BOTTOM(02/20/15) 1 ) —1 12739' 12-7/8"LNR,6 5#, 13CR-80 STL, —1 12776* I i A43 0058 bpf,ID=2441" DATE REV By I COMPAGNTS 1 DATE REV BY' COWENTS PRUDI-10E BAY UNIT i 09730/85 ,INITIAL COM PTION(S-12A) :12/02/15 ATOJAC1SET CIBRACPERFS(11/29-30/15) , MIL. S-128 I 10/07/12 NORDIC 2 CTD SIDETRACK(S-1213) i 01/20/16 /4.13/14.0 SET CMT(09/01/15) I PERLAT No '2121110 11/22/13 NORDIC 3 FISH PERF GLIM 7 08/14/17 P&/JM) !CORRECTION TO MAX ANGLE ' AR No 50-029-21419-01 02/13/15 A UW RIC SET C8P/CMT RETAIN3R i 08/16/17 FVJMD lA COED 3-3/16"ODI*ECTION ID SEC 35, T12N,R12E, 1648'FNL& 1955 FW., 1 '09/14/07/ALM RIC TOP OF CMT i 08/2W 17 MSS/JAEI A CPERFS(08/22-23/17) 1 ,03/02/15 BLS/JMD,FISFt MLLED CEIP TO BOTTOM(2/20/15) , ' BP Exploration (Alaska) STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon 0 Plug Perforations Q Fracture Stimulate 0 Pull Tubing 0 Operations shutdown 0 Suspend 0 Perforate Q Other Stimulate 0 Alter Casing 0 Change Approved Program ❑ Plug for Redrill 0 Perforate New Pool ❑ Repair Well 0 Re-enter Susp Well 0 Other: 5-G f G/BP If(1'n-- 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 212-111 3. Address: P.O.Box 196612 Anchorage, Development Q Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-21419-01-00 7. Property Designation(Lease Number): ADL 0028260 8. Well Name and Number: PBU S-12B 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: Total Depth: measured 12776 feet Plugs measured 11570feet RECO ED true vertical 8770 feet Junk measured 12720 feet n 8 Effective Depth: measured 11570 feet Packer measured 9193 feet DEC C 2 2015 true vertical 8775 feet Packer true vertical 8240.74 feet AOGCC Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 77 20"x 30" 42-119 42-119 Surface 2657 13-3/8"72#L-80 42-2699 42-2699 4930 2670 Intermediate 9626 9-5/8"47#L-80 36-9662 36-8622 6870 4760 Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth: Measured depth: 11252-11282 feet 11282-11312 feet 11312-11372 feet 11690-11740 feet 11955-12020 feet 12090-12295 12520-12560 feet 12616-12696 feet True vertical depth: 8781-8780 feet 8780-8780 feet 8780-8779 feet 8773-8772 feet 8771-8772 feet 8773-8783 8787-8783 feet 8780-8776 feet Tubing(size,grade,measured and true vertical depth) 5-1/2"17#L-80 34-9330 34-8351 Packers and SSSV(type,measured and See Attachment See Attachment See Attachment true vertical depth) 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: c , • M� ��'=; i t ' ? 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 4 0 1889 1657 245 Subsequent to operation: 59 2756 192 1483 237 14.Attachments:(required per 20 AAC 25.070.25.071,8 25.283) 15.Well Class after work: Daily Report of Well Operations Q Exploratory ❑ Development Q Service ❑ Stratigraphic 0 Copies of Logs and Surveys Run 0 16.Well Status after work: Oil Q Gas 0 WDSPL 0 Printed and Electronic Fracture Stimulation Data 0 GSTOR ❑ WINJ 0 WAG 0 GINJ 0 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 Catron,Garry R(Wipro) Email Garry.Catron@bp.com Printed Name Catron,Garry R(Wipro) Title PDC Principal Engineer Signature jtS(A,L,Goir Phone +1 907 564 4424 Date 12/28/15 __ 4 4 /a- Form 10-404 Revised 5/2015 V T L 1 /1./i '' �S"DEC 3 0 2015 Submit Original Only • • as CI. 0000O M CO _ O co N (O cc, 0 O ' N O CO V M O O O O p O NI- CA co N p r- O O N- co O CA (A N M CO O CA N Cr) N 141 T- CO CO CO CO co f— N 00 CO CO CO 00 CO N N CO CA N M f,- ci Cr) N � CO f,- M CO 00 CO CO cc) OONc7NACM coONNO O r r r V QW CD O CA N N CO Lo (3) N tt M N 0) O N M CA 0) ap o O • CO J CO 00 o CO CO • CV M N 4# M J J 4 �# •N C X - co a) Cfl - NCD CO (V N N a0 N V r'? IP '- i- N- r- '— r o M N t 0)N- LO CO O N— N J CO CO Ca 0 0 W CC I- 12) 1- W ° W Z o W W W W W pp Q DI' ZZZZj U (n Z J J J J I— • 0 Packers and SSV's Attachment PBU S-12B SW Name Type MD TVD Depscription S-12B TBG PACKER 9193.34 8240.74 5-1/2"TIW HBBP Packer S-12B PACKER 9253 8288.88 5-1/2" Baker LT Packer • • S. c 0 3J o o o tm1) aO - m sit, Q E ,cco L E a E ch 0 tf 2 •• o coo -c -cm p � -c > ' • _c ov) Z cco U LL O c V 10 cn E.D.` co m cco E o 0 p 03 a — U O L c - •„' `t m ca 0 O Q-s N p,N 3 (DUmU JO a) w N o0 2a CLL o - E L� o> Q N O O 3 ° p = if)L C 0E � a, v0co y L... ON CL c as N 7' U . O _j ` QL L Q NOLO 0002 O U as (pc' 0 O � ,' L_ C v- ' = a• o `r" o a = ate `° c vi 3 z' R Q a) a)t UU) a a) 0110 %-, a) c-� E g -D C v a V L -co o c)M +) E N p, Q < 0U� z < a " .3 o * o < Q F- p m u) m a 2 o C a c°) 2 '0) io a c 3 a) +: m N J m O M y 1- CO 7 2 N U � � Um U a3U U tom . � 3 _0 U c'Eaoi LL ch u) ami cn c a—oia Cl) ( ate m c0 a nc) .- 2 C J cn >,V` @m O m U U o cm J * aU > ' Ce V00 d UV o * NUS ccaC * NU � m m 8 a� cp a - � C0.. _ � ain _oCe as U . Ci) la laCCaoU � -a -c2 c -0wrn '6 , 2 c N c O N - N o - N O -- - cn "O fa 7 0 N O O T- OQ L CC ui •§ cv ori Npo mrn6 v N2 00 , co 4- ) U N +L+ i_ , N L.., +L.+ LL O c N CV _c ce a CA 0 -p �- c N L_ L ' - U = > .3 0 � 0 3 iiu) 2 � o '3cnmJ -4a o c o 3m .§ con rn >'W "' c' aoi Ho U < L _ c 0r1 > DM -r- c 0 F- o � U F- o po � - O c UF- o = .* UJ c)J E22 ,- mUJ EaU —_ m NUJ EaT-' r- c F- O 2 o I O I c To x L,, N - F- O c0 rii N in cti U) O L? 06 c c `n °'� a N c 2 O C O rn • 0 -0 oa *k `n o a) o p p o ,; E0 °. o • p m p c)O +. ` ... o • ai c w v Q c a 3 a5 C 3 c lL X Q L0 ' 2 a - c L c a o aa) co w e co c E rn L_ :-. co w? � � o - o Q � .S co > c m - o U J * 4-(3 O * U o w o 0 c U O -§ MNL 2 o L U CO = N N CTL U CU _j (,) 00 _1 (.) .0 U2 U m N n wUO O O c o oY U p a� U cn m ti o _ NI- H -O * F- _a* coMu? * F- � * Jm re I-- c * I— .13' p t (D -C O \ UOQ : oo : a , - : UO « recn , -ca o : UO : 2aao : co , w F- o 1 0 O c 0 0 F- CV N N N N co � CO O o L � `— _ N N CV CVch CO Nr 0 r r Q TREE= 41/16"CM/ • sOr NOTES: ""DUE TO INSUFFICIENT OIL COLUMN WIE1,111EAD= McEVOY S-12B -12B S-12 WAS P&A'D ON 09/27/84.S-12A WAS DRILLED 20' s ACTUATOR= BAKER C SE*"WELL ANGLE<70°@ 9955'"""2-7/8"CHROME NTIAL KB.aE 72.97I ' LNR„” BF.aaEV= 36.72 / KOP- 2900' 2018' —15-1/2"ROM SSSV LAM)NP,D-4.562' Max Angle= 38'@ 5206 20'CONDUCTOR H -100 J Datum MD= 9964' Datum TVD= 8800'SS GAS LFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 13-3/8'CSG,72#,L-80 BUTT,D=12.347" - 2699' 6 3204 3202 10 OTIS LBD DOME RM 16 12/11/13 5 5512 5188 38 OTIS LBD DOME RM 16 12/11/13 4 7210 6586 31 OTIS LBD DOME RM 16 12/11/13 Minimum ID = 2.370" 9263' 3 8157 7394 34 OTIS LBD DMY RA 0 07/01/93 6-1/2" WFD ER LTP 2 8703 7840 35 OTIS LBD DMY RA 0 07/01/93 1 9010 8091 35 OTIS LBD SO RM 24 12/11/13 I i 9118' -15-1/2"OTIS XA SLD SLV,D=4.562" J L 9176' -ITW SBR TBG SEAL ASSY 9193' H9-5/8"X 5-1/2"TNI FBBP PKR,D=4.750" ' ir--I 9246' H5-1/2"OTIS X PIP,D=4.562" 5-1/2"WFD E32 LTP,D=2.37"(10/15/12) --{-8253' --14 5-112'TBG-PC,17#,L-80 BUTT-M, -f 9329' \, 9258' -{3.70"BKR DEPLOY SLV,D=3.00" 9279' --{3-1/2"FES X NP,D=2.813" .0232 bpf,D=4.892" ■ / \-�____1 fes,D 9285' —15-1/2-OTIS XN =4.455" 3-1/7 LNR,9.3#,L-80 STL,.0087 bpf,D=2.992' -I 9332' . . BEHIND 9330' --{5-112"TW WLEG,D=4.892" CT LNR 9338' - E3WD TT LOGGED 12/08/86 TOP OF 4-1/7 LNR -I 9410' 9332' -13-1/2"X 3-3/16"XO,D=2.786" 9-5l8"CSG,47#,L-80 BUTT,D=8.681" H 9410' H9-5/8'X 7"BTO TIEBACK SLV,D=? 9662' 9416' H9-5/8"X 7"BOT LNR HGR,D=? 4-1/2'X7"WFFSTOCK(09/07/12) -I 9834' ' -!� 9720' -�ESTMAT®TOP OF CEMENT i4 7"LNR,26#,L-80 BUTT,.0383 bpf,D=6.276" -I -9834 +►� i`. �►`.ik a MILLOUT WINDOW(S-12B) 9834'-9841' 3-3/4'LM2,6.6#,L-80 TC11,.0079 bpf,D=2.850 -I 10100' ,�J PRORATION SU IARY 10100' -13-3/16"X 2-7/8"XO,D=2.377" REF LOG:SLB GR/C CL/T TPF ON 10/03/12 ANGLE AT TOP FERF_90"CO 11252' Note:Refer to Production DB for historical pert data I 11570' -2-7/8"CEP(11/29/15) SIZE SPF INTERVAL Opn/Sqz SHOT SQZ 2" 6 11252-11372 0 11/30/15 2" 6 11690-11740 S 10/03/12 02/13/15 2" 6 11955-12020 C 10/03/12 I 2" 6 12090-12295 C 10/03/12 ' 2" 6 12520-12560 C 10/03/12 2" 6 12616-12696 C 10/03/12 I PBTD - 12739' I -12720' ( I'Sit COPPUSFEDTOBOTTOM(02/20/15) 4 2-7/8"LNR,6.5#,13CR-80 STL, H 12776' �. .0058 bpf,D=2.441" DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 09/30185 INITIAL COMPTION(S-12A) 02/13/15 ALM PJC SET CBP/CMT RETAINER WELL: S-12B 10/07/12)1IOROIC:CTD SIDETRACK(S-12B) 09/14/07ALM'PJC'TOP OFGMT PERMIT No: '2121110 11/22/13 NORDIC 7 RSH PERF GUNS '03/02/15 BLS/JMD FIStt MILLED CBPTO BOTTOM(2/20/15) AR No: 50-029-21419-01 12/11/13 CJWJMD GLV GO(10/11/13) 12/02/15 ATO/JMD SET C BP/ADPERFS(11/29-30/15) SEC 35,T12N,R12E,1648'FM.&1955'FWL 12/12/13 STF/.M+D GLV C/O(12/11/13) 01/21/14 PJC FISH PIERF.G1tJS(11/21/13) - BP Exploration(Alaska) • • C o a) 0- u w ea F a) 0 Z w Q o JO�m o co Q s V1 y Opo I- ,Y K rn -� a) a) O y _c C tio 0 S O v O 0 C O C -EW C _ O O C Q 0 CO (3 > O Q C ra 0 ••••I W rn O7 LO 117 LO ,, ro O v m Q C7 - r y y J J a Q lA a a) O Ln to d -. s 0 0) ) 7 d U N C C •C cp �_ N N N Q N O ro 'i W O Q N N F O O M C a > d M C ro Q N Z Q 0 0 E v -5.-,Q) Y W D o 0 0 0 ClNina 03 U u _c a a J J J J J J C L +..� L• L } w W W W W W pq C co O J .-- 1- LL 11. U_ U. LL U. - O E ..O CO r1f F d d d Q Q Q Q n u ro C m 0 0 C I < Z Z Z 2 Z Z 0 u "moi '= ���i LL LL LL LL LL Li. p I U ; rot •E Vii CU CD u _._ R 4) �t O p O tsfs O Z 5 C v C G� C ^ V H 0 C o a) cam! K O 'l '6 2 ~ c c>o C a MI c-! 0' 0 Q cu t u > C V M3 Q d erp)� 6 af, O O V U _� E. p ro;,s41d U cc d co V 8 mil > 3i� (� a• mi ` ` :.1 • a) �i 0MI � d � 0 ade LI `p�' = ix• O h i'r'k I 6� 1 x � W2°- L- L- › _▪ N .., 0) , t- w a 0 0 J 0 J J Si 0 0 go) 0 W U W W W F Z co N W 711— r IMO L 2 m Od0 co y m y - E LU c Z O O O = 0 = E x x x s x -0 - 0 0 0N 0 w a1 t W = D = J D J u LL IXIrCe Ce O to ilia a a a c > u 9Aj GI co co a)M O O X N O O O O O O Usi O p ` 0 0 0 0 0 0 CO 01 u Lui;cx U N x co U F '-' m N CO cc > co U > > X m > LL OE ili O w U U U 0 0 0 N C X ro C ro 0 ....,. ,- ,- 0 0 0 0 U lD O O O O O O IA N o) r O) v l() h f0 N W N O C E m Cr co In N Oa N O M M 01 O ry N N N N N N L U nQ O) O) G) O) O) O) O : g0 0 0 0 0 0 a) an O O O O O O •L l() lf) lA N Lt) Lf) 0 v d1 cc _ a ou co c aJ a > u dJ Z m OQ N N N N i' 1 o 2 N E ^ Z Z N ro 4, Lciu Z CL d ry w X J J C C CO� .0 r1 L ▪ C.* v. O ro aJ fo 0 CO. u) d Q) 1 F- a` a Q ,, STATE OF ALASKA •ALASKA OIL AND GAS CONSERVATION COMMI N ` REPORT OF SUNDRY WELL OPERATI S 1. Operations Performed Abandon 0 Plug Perforations 0 Fracture Stimulate 0 Pull Tubing 0 Operations shutdown 0 Suspend 0 Perforate 0 Other Stimulate Q Alter Casing 0 Change Approved Program 0 Plug for Redrill 0 Perforate New Pool 0 Repair Well 0 Re-enter Susp Well 0 Other:.2y�7;NGti) 0 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Numbec:..212-111 3. Address: P.O.Box 196612 Anchorage, Development Q Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: • 50-029-21419-01-00 7. Property Designation(Lease Number): ' ADL22882,60eL& .9,57 8. Well Name and Number: . PBU S-12B 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: RECEIVED Total Depth: measured • 12776 feet Plugs measured feet true vertical 1 8770 feet Junk 11661 feet measured S E P 1 6 2015 Effective Depth: measured 12739 feet Packer measured 9193 feet true vertical 8773 feet Packer true vertical 8240.74 feet GC Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 77 20"x 30" 42-119 42-119 0 0 Surface 2657 13-3/8"72#L-80 42-2699 42-2699 4930 2670 Intermediate 9626 9-5/8"47#L-80 36-9662 36-8622 6870 4760 Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth: Measured depth: 11690-11740 feet 11955-12020 feet 12090-12295 feet 12520-12560 feet 12616-12696 feet True vertical depth: 8773-8772 feet 8771-8772 feet 8773-8783 feet 8787-8783 feet 8780-8776 feet Tubing(size,grade,measured and true vertical depth) 5-1/2"17#L-80 34-9330 34-8351 Packers and SSSV(type,measured and See Attachment See Attachment See Attachment true vertical depth) 12.Stimulation or cement squeeze summary: Intervals treated(measured): 11955'-12020',12090'-12295',12520'-12560',12616'-12696'. Treatment descriptions including volumes used and final pressure: �y 85 Bbls 12%HCl,85 Bbls 9:1 Mud Acid,12 Bbls Wax Beads,523 psi. SCANNED DEC 1 4 2 015 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 10 0 344 1420 224 Subsequent to operation: 94 0 859 1538 271 14.Attachments:(required per 20 AAC 25.070.25.071,&25.283) 15.Well Class after work: Daily Report of Well Operations Q Exploratory 0 Development Q• Service 0 Stratigraphic 0 Copies of Logs and Surveys Run 0 16.Well Status after work: Oil Q I Gas 0 WDSPL 0 Printed and Electronic Fracture Stimulation Data 0 GSTOR ❑ WINJ 0 WAG 0 GINJ 0 SUSP 0 SPLUG 0 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: N/A Contact Catron,Garry R(Wipro) Email Garry.Catron@bp.com Printed Name Catron,Garry R(Wipro) Title PDC Principal Engineer Signature ACI,11. Phone +1 907 564 4424 Date 9/16/15 Form 10-404 Revised 5/2015 V r L /j_2//L- Q B SEP 1 7 2015 Submit Original Only • • 0 p o o p (0 p to CO in N W O N N- U Na O co p p i CO I- p d' CO Cr O CO N m V CO I� 00 O p N M CO O O C) N LO CO N N- L) CO CS) CO CO CO I� CO N 00 CO CO CO CO CO I- M N N CO (A N CO f� CO N CO N-CO CO CO CO CNO cN O OO O CO N M N N CA O O - CA (1.) a 4-1 rn < CO CO CACI N N CO LC) N C) ' V V CO ONI'. CO M W Etp O O p co co C) - coc) co co co C y CO N *k J J k N in N. •(n -(7) X Oj co a) CO RSO �0O =,)0 = CO N 2 M N L csi LO N rf,M O C N CO CO N CO N CD N C3) 00 CA J W � Q C 0 U W LL1 U 0 CD Z Z c W W W W W pp Q D H Z_ Z_ Z_ Z_ j 0 U) Z J J J J • Packers and SSV's Attachment PBU S-12B SW Name Type MD TVD Depscription S-12B TBG PACKER 9193.34 8240.74 5-1/2" TIW HBBP Packer • S-12B PACKER 9253 8288.88 5-1/2" Baker LT Packer . • • a) = a) cci -O N O o rn C O E -,-.5 Z .- p O N c 44 O N `° O o * °' a a n O U lf) �`°- E- -a E a * VQ O m N 4' O J a) C co cu o a .u) C :-' N LI_ -0 O N ~ E p O C a) - Q m E a) .- _ a) Q cou O E- 0)) O)r ,_0 co _0 � * 0 - a) w C © • C s _ V E U -c E O- J Q -0 C V N O tf) Q O7 o)L (0 J O w`- C C U I OQ 00 U) O -o N 7 I Q LL a) © E p U J Y II II * * > C E C LL a N N O Cr > C a) OU - 7 .01 F- Q Z '5 (n U) O OO ac .-- 00 O U > *LUO X Q Qco ._ 0 N m > a) to I * * J E- O �\LL U E t0 CO < c6 C) Q O O V I C -0 6 M ch > O= U C) 4 Ct 0 2 ch ch a uJ ; s- 47+ Ct to Q U m "a_ Q E E J J Q 0 O a) O _ L- 2 o /) _c U o o O O -C w L v o C) 2 tom E ca o a)ocA � o � v 0 0 0. 0 -O J = I— 6 a Y -O -O p L O cn - O) C co O ca u) cu) LL Q U 7 0 CU 7 cj) NCO u) (Q � a a) OnO � 0 Q0 ac 0 E 10 c * •= Jrn � w _1 _C n U fn 2cO o U * 112 C (7) (f..§ .c% Uav� cooa0 ~ 0 .o - _ O M JPO 2a O O * � * I- 5I- a = II . UNQ U 7 L CO o p -oo g * a) �U 6 c o T. 5 a0 v ozS o1:5W',- 0 O _ D d * fn O (B N U U L O C O � � Z c`5c��I * WLO co co - � � N o � cAa II _� Q c0a Q Ce � Eos o `- = N Ems _ _ _o I-ioiLL o .. o *u E • E _ U) 0 ai0 A > u) 00 in 4 N > c%) O o _o a) -O M -O LL o LL * H g U) 1E N II I- -a � N � " of- oa -oo n > 5 6 5 . * . > Na Q-> co U c,i +TaU p � o Q °) Q U * Go > in E Q � Qc .ccA Q ON 8 - * * . * QtoQ2c � coY) .- 0 o E— E a� UI— E1_cn Q3 ,- -o ,- � p = .cg• O Q- u. _o >- (., o 0 o � oc � 2 E � 3 ` l) C J C C II � M � 0 - cn (1)) 0LL 0 - UU) 0 I__ a- C n_ .c_ D D0) 010 > .- V' � 5 2 -o a) 2 � co old o a1) o Ci * irD a) � p0) o � o � OU � � � a) U ° oU30 � � = O O v `1a = W D E - EaU n UO * a JO * UO * 0Ji � * < 5Q - < ,._ <ui 5I— U) IL- E.— o0O) w I— 0 in 10 10 10 to 10 1 >- p o O o o O O o I- N NN N N NN O N N M 1 6) 6) W a) W a-) U Q • N T c � O 4▪ ' E (/) c ~ O CCI o o m 0 a m CU 0 0 (13 - U "w _ Q U N Lo 1;3a) 2 m a x o m co o � z z U o u) orno0) fFQt ` 4-1/16'CNV SA TES: ""DUE TO INSUFFICIENT OIL COLUMN r U-EAD= McEVOY • S-1 S P&A'D ON 092784.S-12A WAS DRILLED 20' ACTUATOR= BAKER C SE"'WELL ANGLE<70'eg 9956"^2-78"CHROME NfIAL KB.B1 72.97' I LNR"' BF.BEV= 36.77 /_.1 KOP 2900' 2018' —5-1/2'ROM SSSV LAND NP,D=4.562' Max Angle= 38'@5206' 20"CONDUCTOR -- —100 0 I Datum MD= 9964' Datum ND= 8800'SSGASLFTMANDFZ�SST MD NEV D DTYPE VLV LATCH PORT DATE13-3/e'(SG,72#,L-80 Burr,D=12.347' H 2699' 6 3204 3202 10 OT6 LBD DOLE RM 16 12/11/13 5 5512 51 38 OTIS LBD DONE RM 16 12/11/13 4 7210 6586 31 OTIS LBD COKE RM 16 12/11/13 Minimum ID = 2.370" @ 9263' 3 8157 7394 34 OTISLBO DMY RA 0 07/01/93 6-1/2" WFD ER LTP 2 8703 7840 35 OTIS LED DM' RA 0 07/01/93 1 9010 8091 35 OTIS LBD SO RM 24 12/11/13 TT 9118' H5-112'OTIS XA SLD SLV,D=4.562' 9176' .1—TNV SBR TBG SEAL ASSY 9193' —9-5/8'X 5-1/2"TIW FBBP NKR,D=4.750" ' 9246' 1—5-12'OBS X NP,D=4.567' 5-12'WFDERLTP,D=2.37'(10/15/12) — 9253' 9268' -(3.70'BKR DEPLOY SLV,D=3.00" ' , I 9279' H3-1/2"HES X NP,D=2.813' 5-1/2"TBG-M,17#,L-80 BUTT-M. H 9329' -,,,.,..,.....,' .0232 bpf,D=4.892' 3-1/2"LNR,9.3#,L-80 STL,.0087 bpf,D=2.997 H 9332' , \� 9286' �5 12"OM XN NP,D=4.455' BEHIND 9330' —15-1/7'TNV WLEG,D=4.892' CT LNR TOP OF 4-12'LNR — 9410' i 9338' H ELM)1T LOGGED 12/08/86 1 9332' —3-12'X 3-3/16'XO,D=2.786' J . ' 9410' —9-5/8"X 7'BTO TIEBACK SLV,D=7 9-5/8"CSG,47#,L-80 BUTT,D=8.681' — 9662' 9416' H9-5/8"X 7'BOT LNR HGR,D=? 4-1/2'X7'W- 'STOCK(09/07/12) — 9834' I ! 9720' _HESTMATEDTOP OF( BVT 7'LNR,26#,L-80 BUTT,.0383 bpf,D=6.276' —9834 d MILLOUT WINDOW(S-126) 9834'-9841' 3-3/4'LNR,6.6#,L-80 TC11,.0079 bpf,D=2.850 — 10100' PEFFUF7ATX)N SUMMARY 10100' —3-3/16'X 2-78'XO,D=2.377" Fall LOG:SLB GR'CCi1TN'YTTF ON 10/03/12 ANGLE AT TOP PREF:91°@ 11690' Note:Refer to R-oduction D8 for historical perf data SIZE SPF NTBa/AL Opn/Sgz SHOT SCIZ 2" 6 11690-11740 S 10/03/12 02/13/15 2" 6 11955-12020 C 10/03/12 7' 6 12090-12295 C 10/03/12 2' 6 12520-12560 C 10103/12 I 2' 6 12616-12696 C 10/03/12 ' I "12720' —FISH CBP F USF TO BOTTOM(02/20115) PBTD —{ 12739' 2-7/8"LNR,6.5#,13CR-80 STL, — 12776' le, .0058bpf,D=2.441" DATE REV BY (DIAANTS DATE REV BY COINANTS PRIDh0E BAY INT 09/30185 INTIAL COMPTION(S-12A) 02/13/15'ALIA PJC'SET CBP'CMT RETAINER VV43L S-129 10/07/12 dORD1C:CTD SIDETRACK(S-129) 09/14/07 ALAN PJC TOP OF CMT FIT Pb: '2121110 11/22/13 NORDIC;FISH PERF GUNS i 03/02/15 BLS/JM)RSH MLLED C8P TO BOTTOM(2/20/15) AR No: 50-029-21419-01 R 12/11/13 CJ JIA)GLV C/O(10/11/13) SEC 35,T12N,R12E 1648'RTL&1955'FWL 12/12/13 SIF/J10.0GLV C1O(12/11/13) 01/21/14 PJC FISH FERF GUNS(11/21/13) BP Exploration(Alaska) • STATE OF ALASKA L, ,KA OIL AND GAS CONSERVATION COMM._.,ION • REPORT OF SUNDRY WELL OPERATIONS 1 Operations Abandon LJ Repair Well U Plug Perforations H Perforate H Other U Cement Squeeze Performed Alter Casing ❑ Pull Tubing❑ Stimulate-Frac ❑ Waiver ❑ Time Extensions Change Approved Program ❑ Operat Shutdown❑ Stimulate-Other ❑ Re-enter Suspended Weill] 2 Operator 4.Well Class Before Work: 5 Permit to Dnll Number Name BP Exploration(Alaska),Inc Development El Exploratory ❑ 212-111-0 3 Address. P 0 Box 196612 Stratigraphic❑ Service ❑ 6 API Number Anchorage,AK 99519-6612 50-029-21419-01-00 7 Property Designation(Lease Number) 8 Well Name and Number ADL0028260 PBU S-12B 9 Logs(List logs and submit electronic and pnnted data per 20AAC25 071) 10.Field/Pool(s) PRUDHOE BAY,PRUDHOE OIL 11 Present Well Condition Summary RECEWED Total Depth measured 12776 feet Plugs measured None feet true vertical 8769 84 feet Junk measured 11661 feet MAR 2 3 2015 Effective Depth measured 12739 feet Packer measured See Attachment feet AOGCC true vertical 8772 81 feet true vertical See Attachment feet •AO GCC Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 74 20"x 30" 36-110 35-110 0 0 Surface 2664 13-3/8"72#L-80 35-2699 9341 97-9343.77 4930 2670 Intermediate None None None None None None Production 9828 9-5/8"47#L-80 34-9662 9271 64-9273 45 6870 4760 Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation depth Measured depth 11690-11740 feet 11955-12020 feet 12090-12295 feet 12520-12560 feet 12616-12696 feet True Vertical depth 8772 7-8771.85 feet 8771 11-8771 6 feet 8773.23-8783 23 feet 8787 04-8783 46 feet 8780 34-8776 27 feet Tubing(size,grade,measured and true vertical depth) 5-1/2"17#L-80 33-9330 38-8208 04 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) ��pp 11690'-11740' N Treatment descriptions including volumes used and final pressure 31 BBLS 15 8 PPG LARC CEMENT 13 Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation. 33 22 3544 0 232 Subsequent to operation 30 22 3253 0 228 14 Attachments. 15.Well Class after work Copies of Logs and Surveys Run Exploratory❑ Development O Service❑ Stratigraphic ❑ Daily Report of Well Operations X 16.Well Status after work Oil Q Gas U WDSPL❑ - - GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUcf 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 Contact Nita Summerhays Email Nita.Summerha s• b..com Pnnted Name Nita Summerhays / Title Petrotechnical Data Engineer Signatu - L ill is / _ __ , - Phone 564-4035 Date 3/23/2015 - r� �� 9/�5 RBDMS PR - 6 2015 Form 10-404 Revised 10/2012 Submit Original Only Daily Report of Well Operations ADL0028260 ACTIVITYDATE SUMMARY T/I/O= SSV/1490/70. Temp= SI. WHPs (Pre-TIFL). ALP= 1450 psi, SI @ casing valve. Note: Pressures taken from Ops gauges due to-42°F temp. 2/9/2015 SV, WV& SSV=C. MV=O. IA&OA=OTG. T/1/0 = 1470/1470/40. Temp = SI. TIFL (Pre Coil Cement Squeeze). AL SI @ casing valve (1500 psi). TBG FL @ 4780' (732' above sta#5). IA FL @5856' ( 344' below sta#5). 2/9/2015 ***WSR continued on 02/10/15***. ***WSR continued from 02/09/15***. TIFL PASSED (Pre Coil Cement Squeeze). Bled IAP from 1470 psi to 430 psi in 2 hrs to S-36 production. During bleed TP decreased 20 psi, TBG & IA FL's unchanged. Monitor 1 hr. WHP's& FL's unchanged. Job Complete. Final WHP's= 1450/430/40. 2/10/2015 SV, WV, SSV= C. MV= O. IA, OA= OTG. NOVP. 0130. CTU#3 w/ 1.75"CT(CTV=32.2 bbl/15075' long) Objective: Log coil flag, set CBP, set Retainer, cement, mill cement Standby for Wells Support to finish RU. 2/11/2015 Continued on 02/12/15 C IU#3 w/ 1.75" CT(CTV=32.2 bb1/15075' long) Objective: Log coil flag, set CBP, set Retainer, cement, mill cement. Standby for Wells Support to finish RU. MIRU CTU#3. Perform weekly BOP test. RIH w/memory GR/CCL in 2.2"carrier and 2.23"JSN to PBD tagged at 12731'. Log from PBD to 8900'. POH 2/12/2015 In Progress CTU #3 w/ 1.75" CT(CTV=32.2) Objective-WSO of fault thru perfs 11690-11740' using CBP and cement retainer Fin POH w/PDS carrier. RIH w/WFT 2-7/8" CBP and set at 11755'. POH. Kill well with 7 bbl meth spear/316 bbl KCL/7 bbl meth spear. Underbalance well with diesel. RIH w/WFT 2-7/8" 1-trip cement retainer and set at 11660'. Perform injection test 1.4 bpm/2420 psi CTP 2/13/2015 In progress Cl U#3 w/ 1.75" CT-(C 1 V=32.2) Objective-WSO of fault thru perfs 11690-11740' using CBP and cement retainer Pump 30 bbls 15.8 ppg LARC down CT and thru retainer at avg 1.3/2250. Unsting and left one bbl of cement above the retainer. Contaminate w/20 bbls PV and POH jetting solids to surface at 80%. RIH and FP wellbore. RDMO. 2/14/2015 Job complete CTU#3 w/ 1.75" CT(CTV=32.0) Objective-mill cement retainer, cement, and CBP MIRU from planned maintenance. Perform weekly BOP test w/ no failures. MU WFT milling assy 2/17/2015 In Progress Daily Report of Well Operations ADL0028260 CTU#3 w/ 1.75" CT(CTV=32.0 bbls) Objective-mill cement retainer, cement, and CBP RIH w/WFT 2.3" Excalibur milling assy. Mill —10'of cement to top of retainer at 11660'. Had trouble getting wt to mill due to hole geometry and chrome liner. POH for agitator. Inspect tools at surface; burst disc gone. Reconfigure toolstring (change out MHA, circ sub, and motor, PU agitator). While RIH at 6850', lost tractor air supply; can't shift pump back into gear. Coil was already displaced to KCL. Come online with neat methanol down coil with field triplex while troubleshooting CTU pump. POH, freeze protecting coil at minimum rate. Repaired air hose fitting. RIH. Dry tag top of retainer at 11667'. Correct depth to 11660'. Mill retainer and cement to 11678'. Lost tractor air supply again. Wiper while troubleshoot. Abruptly lost 600 psi CTP. POH to check BHA. Found one of the three anti- rotational set screws (for the hyd disconnect)which are just above the burst sub had backed out and was left in the hole (-1/2"OD x—1/2" long). RIH w/ 2.30"Venturi BHA 2/18/2015 In progress CTU #3 w/ 1.75" CT(CTV=32.0 bbls) Objective-mill cement retainer, cement, and CBP Fin RIH w/Venturi and hoover from above TOL to where milling ended at 11678'. Hoover OOH to 9500'. POH. Lay out Venturi, Recover 2 slivers of steel and cement. Cut 75' coil, change packoffs, check chains, M/U CTC, pull test, M/U MHA, PT, M/U jars, agitator, motor and 2.30" mill. PT lube and checks. RIH with 2.30' milling BHA. Tag bottom at 11689', Correct depth to 11678'. Mill cement to 11715'. Circ 15 bbl gel pill. Wiper trip. Mill cement to 11738'. Stacking wt. Circ 20 powervis pill. Chase sweep to surface. 200 bbl backside volume. PT cement squeeze with 1500 psi WHP, 0.06 bpm lost in 15 mins-good. 2/19/2015 "**Continue on WSR 2-20-15 *"* CTU#3 w/ 1.75"CT(CTV=32.0 bbls) Objective-mill cement retainer, cement, and CBP Mill Cement to 11,755'- pump 17 bbl sweep- Mill CBP 11,755' push to btm (never lost returns) -Tagged @ 12,596'. Push CBP to bottom at 12720' CTM. Below bottom perfs at 12696'. Chase powervis sweep to surface while POH. Frz protect 5.5"tubing and coil with 60/40 meth. No Flow SSV and swab. lay out tools. Mill in gauge. N/D BOPE and N/U tree cap. PT tree cap. RDMO Coil 3. Need to POP well with gas lift. 2/20/2015 ***Job Completed *** FLUIDS PUMPED BBLS 551 60/40 METH 3088 SLICK 1% KCL W/SAFELUBE 213 DIESEL 50 FRESH WATER 31 15.8 PPG LARC CEMENT Daily Report of Well Operations ADL0028260 73 POWER VIS 220 SLICK 1% KCL 4 METH 4230 TOTAL m � Q. OOoO ca (.0 CO - 'Cr f— CO N O V N (o U o 0 0 0 0 C° � co N CO O) N- CO — N- CO N- O co N V CO CO CO N— O O f� 'Cr O O LON ch N a- a- O CA CO i H r— f— co co 0) LO M O CO ) In N CO CA N— CA O N V N O co co co (A co () (n (O (ocam) O) a) O) N C)) V CD 2 Q N co (o 00 C) N LC) CO CO ) lCO C) C Q c � J 1— a o OHO co co co •N N X CA U (No N rn A y co v r--- a)V O) N CO O) CI� N- • O O N G) N J C O 0 CI)5 w D D v U (1a0 OLLLZ U O Z Z c J D O J J Q Cl) F- Packers and SSV's Attachment ADL0028260 SW Name Type MD TVD Depscription S-12B PACKER 9193 8167.5 5-1/2" TIW HBBP Packer S-12B PACKER 9253 8215.91 5-1/2" Baker LT Packer TREE= . 4-1/16"CIW SAk_.(NOTES: -DUE TO INSUFFICIENT OIL COLUMN WrILFEAD= Mc )IOY S-12B S-12 WAS P&A'D ON 09/27/84.S-12A WAS DRILLED 20' ACTUATOR= BAKER C SE-WELL ANGLE<70°@ 9955'""2-7/8"CHROME URAL KB. ELE 72.97' I LNR" ,„. BE ELEV= 36.72' KOP= 2900' - - ! 2018' -5-1/2"ROM SSSV LAND NP,ID=4.562"7 Max Angle- -= 38°© 5206' 120.cot„Duarce 1._F-J) -1 0 Datum ND= 9964 ' Datum TVD= 8800'SS GAS LFT MANDRELS ST M) ND DEV TY FE VLV LATCH FORT DATE 13-3/8"CSG,72#,L-80 BUTT,V=12.347" -H 2699' 1 a 6 3204 3202 10 OTIS LBD DOW RM 16 12/11/13 5 5512 5188 38 OTS LBD DOME RM 16 12/11/13 4 7210 6586 31 OTIS LBD DOME RM 16 12/11/13 Minimum ID = 2.370" @ 9263' 3 8157 7394 34 OTIS LBD DM( RA 0 07/01/93 6-1/2" WFD ER LTP 2 8703 7840 35 OTIS LBD DMY RA 0 07/01/93 1 9010 8091 35 OTIS LBO SO RM 24 12/11/13 1 1 9118' H5-1/2"OTIS XA SLD SLV,ID=4.562"1.. 9176' -TYW SBR TBG SEAL ASSY 9193' _I-9-5/8"X 5-1/2"11W HBBP FKR,1)=4.750" M *X 9245' -5-1/2"OTIS X NP,0=4.562' 5-1/2"WFD ER LTP,ID 2.37"(10/15/12) - 9253' 1;21 IIM:11 I I 9258' H3.70"BKR DEPLOY SLV,0=3.00" 9279' -3-1/2"HES X NP,ID=2.813" 5-1/2"TBG-PC, 17#,L-80 BUTT-M, - 9329' .0232 bpf,ID=4.892' ....... 9285' -5-1/2"o-ns XN NP,13=4_455" 3-1/2'LNR,9.3#,L-80 STL,.0087 bpi,13=2.992' H 9332 . ' BEHIND 9330' H5-1/2"TTNVVLEG,0=4892° CT LNR TOP OF 4-1/2'LNR - 9410' 9338' H ELMO rr LOGGED 12/08/86 8332' -3-1/2"X 3-3/16"XO,D=2,786" 9410' H 9-5/8'X 7"BTO TEBACK SLV,D=? 9-5/8"CSG,47#,L-80 BUTT,ID=8.681" - 9667 — k 9416' H9-5/8"X 7"BOT LNR HGR,ID=? 9720' -ESTIMATED TOP OF C1SMENT 4-1/2'X 7'W-IPSTOCK(09/07/12) ---i 9834' 7 7.•,.. • I { .se;.: 7"LNR,26#,L-80 BUTT,.0383 bpi,0=6.276" H -9834 ,'-.4..., c4r MILLOUT WINDOW (S-12B) 9834'-9841' ...,,,, 3-3/4'LNR,6.6#, L-80 TC11, .0079 bpf,D=2.850 H 10100' PERFORATION SUMMARY 10100' -I 3-3/16'X 2-7/8"XO,0=2.377" REF LOG:SLB GR/CCUTTSVITNF ON 10/03/12 ANGLE AT TOP FERF:91°@ 11690' Note:Refer to Production C6 for historical perf data SIZE SPF FITERVAL Opn/Sqz SI-lOT SQZ 2" 6 11690-11740 S 10/03/12 02/13/15 2" 6 11955-12020 C 10/03/12 2' 6 12090-12295 C 10/03/12 I 2" 6 12520-12560 C 10/03/12 I 2' 6 12616-12696 C 10/03/12 I I R3T1H 12739' -'12720' —FISFt C8P PUSHED TO BOTTOM(02/20/15) D '' *. 2-7/8"LNR,6.5#,13CR-80 STL, 12776' k- .0058 bpf,0=2441' DATE REV BY ! COMMENTS DATE REV BY COMMENTS PRLIDFIOE BAY UTIT 09/30/85 IMTIAL COM PT1ON(S-12A) 02/13/15 ALM'PJC SET CBR CMT RETA WELL S-12B 10/07112NORCIC CTO SIDETRACK(S-12B) 09/14/07 ALM PJC TOP OF CMT FERMI.No: '2121110 11122/13 NORDIC RSH PERF GUNS 03/02/15 BLS/JM)FISFt MLLE)C8P TO BOTTOM(2/20/15) AF1 No: 50-029-21419-01 12/11/13 CJTYJA43 GLV C/O(10/11/13) , SEC 35,T12N,R12E, 1648'FTL&1955'RA/I_ 12/12/13_STF/JEC GLV CIO(12111/13) 01/21/14 PJC FISH PERF GUNS(11/21/13) - BPExploration(Alaska) Image Project Well History File Cover Page XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. �4 4 - 1 j- I Well History File Identifier Organizing(done) ❑ Two-sided ❑ Rescan Needed 7RE AN: OVERSIZED: NOTES: C r Items: ❑ Mas: Grayscale Items: ogs: ❑ Poor Quality Originals: ❑ Other: ❑ Other: BY: An Date: t /s/ Al Project Proofing BY: Maria Date: CI/19/11-1 /s/ me Scanning Preparation x 30 = too + = TOTAL PAGES (o 0 (Count does not include cover sheet) BY: AD Date: I �.. /s/ Production Scanning I Stage 1 Page Count from Scanned File: 1(/ (Count does include cover s et) Page Count Matches Number in Scanning Preparation:s � YES N�O/� BY: Mara,/ia Date: q/ Jftf /s/ J lo Stage 1 If NO in stage 1, page(s)discrepancies were found: YES NO BY: Maria Date: /s/ Stage 2 Additional Well Reports: YES NO TOTAL PAGES: Digital version appended by: Meredith Michal Date: /s/ Final Page Count: Stage 1 + Stage 2: TOTAL PAGES: Scanning is complete at this point unless rescanning is required. ReScanned BY: Maria Date: /s/ Comments about this file: Quality Checked 7/8/2014 Well History File Cover Page_20140708.doc M_ O O O N .T N 4 9 5 coNv5 rn I W a • ° J c` N c E 0 3 e- Z .0 d o rn 0 a N /�ITo 2 c o J o E. a La >. co 6 = a) c caaa ) t c 2 Imo- 1- w m o a) 7 Z - a m E O 0i 0I 2- c; a cn a5 a) z a) 0 c W W W } Q m N U (O LL a 2 O + N LL LL u. Q c ca N c Z y >,_, W 1 I I m 7 co ii) O J N O a) EZ C ca. 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IZ /� 0 I 0 C CL M Z C M N- n 0 0 0 CO0 0 N coa) C r 0 .3 cc' M W O O W O co co O N N N co co co co co co co co To. a) • to E a N ✓ U m , C o n 1 7 O '"CO m Q' Z to Q 1 a N !I a N SII Z O'O' O ~ rU O ml 0 0 o y Z N I / 2 J )' U U U R M m o U O)co c CO m U J co N N (f) Cl)p 0 a) CL t p p J U N L a. c ,'W o I QTD a °I j / 0 Z E /Z w QN 0 o f 0 aa)) aa)) m N E J 2 2 2 N .N o U Z I cn cn cn CO 2 CL CL CO m as 1.13 y lia m mm m m v c El0 0 o c c o o m 0 0 0 ac °i c /N- Z!� o o c U E ;g m �0 2 co i m E.D. 3 S 3 = E . a a) a) -o ch 0v m _rn _rn o) o) 0 Z z E E 0 0 0 0 0 D Z O w i- a p J 1- - .0 ao ao M M _M N- N N N C r f— i- < y 0 5 E M M (o (o co CO I-- c0 c0 cc N M Z 0 re Ili CI Z N N N N N N N N N N - Q C Ta. co 0 a7 ++ E E o /N10 i0 a oo a n c)._ ° W LI" ?) co Y rL Z W 0 0 0 0 0 0 0 0 C U JI w w o ° w LLI W o � o � W w J O I M O r rn .. /'z/''A 1 `-° ›... N Q.0) ch . N O � 'b N c Tos I as In O) Q H v w a, • N O Z t• t o l U a m II Q ! 21 crj "RI U 0� I% JPP Z Z /Z hi I J N ./ N 1 N Ii Q C N it N 0 jl O O 7 O «a ca III co 0. i= o o OC ° J co°' m I O. ii: E W X w a, N —J m rn a U m o € 3 E F Z ~' � Q w 114 I 1 , M = Gp a N N O U Z C c a� CO >- >- >- E ci / o °' Q / o a I— ch I— F N EI Z N a3 C 5 CO — a. COCI in (13 1111 Q p N , W m 41— E W lc Y = O a) c .� :: ' I V+ os A 0 0 = C p co Q • = a aTz a i� Q O a U -o c Ib' E >, _ • O O • U o t o I� • z -4� a) 11 N O 3 o z , —.IF >- o II A ›/ cc N W E a 0 a) N w r p t I Cl) d re a -Se = 6a>i a> c^o O_ a m U o c y O N. H c Z = m •O N c 2 Q O .-- ' Q O 0 + J IC = N a) -c I a) caC ce N J � 6IE O £ °o — aI1E :IEao 00pa I iv a 1 0 Ho H o Pro ,212 -111 Ferguson, Victoria L (DOA) From: Ferguson,Victoria L(DOA) Sent Tuesday, September 24,2013 10:05 AM To: 'Johnston, David' Subject: RE:S-12B Fishing Job(PTD 212-111) Agreed; the fishing for perf guns and pulling of the LTP do not require a 10-403 but do require a 10-404. Victoria Victoria Ferguson Senior Petroleum Engineer State of Alaska Oil&Gas Conservation Commission 333 W.7th Ave,Ste 100 Anchorage,AK 99501 Work: (907)793-1247 victoria.ferouson aC�.alaska.gov From: Johnston, David [mailto:David.Johnston2C)BP.com] Sent: Monday, September 23, 2013 4:04 PM To: Ferguson, Victoria L(DOA) Subject: S-12B Fishing Job Hi Victoria, I would like to propose my line of thought on an upcoming job for Nordic 2. We are looking to send Nordic 2 to S-12B on about November 1,2013 to RU,test BOP's, kill the well,and then fish out perforating guns that were left in the hole last year when they became stuck. As part of this work, pre rig with Slickline we are going to pull the Liner Top Packer. Our thought process is that we will need to submit a form 10-404 to report the LIP being pulled,and to update that the spent perforating guns are out of the hole, but that we do not need a sundry for any of the proposed work pre rig or with the rig. Following the rig work the base management&well interventions team will develop a remediation plan for remedial cement work, logging,and add perforating;all of which will need a Sundry. When we are doing the rig work we would be operating under the section 25.286 Well Control for Work String Service Operations. I'm bringing this up now just to make sure we are all in agreement that we are doing things appropriately and that I have not misinterpreted anything. Thanks, David Johnston CTD Engineer, BP Alaska 564-5985 1 11111/ II CE1 riMRAY 2 9•. 24 C3 BAKER P ,INT DISTRIBUTION LIST AOGCC COMPANY BP Exploration(Alaska)Inc. INTERMEDIATE FINAL Yes (mandatory) WELL NAME RUN NUMBER 2�\2/� 1.l(mandatory) 2-2_. \3 FIELD Prudhoe Bay BH SALESMAN Chris Klotz (mandatory) (mandatory) COUNTY North Slope Borough BH DISTRICT Alaska (mandatory) (mandatory) STATE Alaska PAGE OF (mandatory) LOG DATE: TODAYS DATE: 4/3/2013 (mandatory) DISTRIBUTION LIST AUTHORIZED BY: BP Exploration(Alaska)Inc. (mandatory) HAS CLIENT BEEN INVOICED FOR ADDITIONAL PRINTS? COMPANY FIELD FINAL CD (digital/ ADDRESS(FEDEX WILL NOT DELIVER TO P.O.BOX) LOGS LOGS image) FILM PERSON ATTENTION #OF PRINTS #Ur HHIN I S ,#OF COPIES #OF COPIES 1 P Exploration(Alaska)Inc. I 3 1 1 etrotechnical Data Center LR2-1 900 E.Benson Blvd. , Anchorage,Alaska 99508 2 ConocoPhillips Alaska Inc. 1 1 1 1 I 1 Attn Ricky Elgarico PO Box 100360 Anchorage,Alaska 99510 3 ExxonMobil,Alaska I 1 1 1 1 1 Attn Lynda M.Yaskell and/or Leonardo Elias 3700 Centerpointe Dr. {� Suite 600 Anchorage,Alaska 99503 -i 4 tate of Alaska-AOGCC I I I 1 1 I I I hristine Shartzer I; 1333 West 7th Ave,Suite 100 Anchorage,Alaska 99501 I 5 NR-Division of Oil&Gas 1 ( _ 1 1 I _I I 1 ttn:Sean Clifton 550 W.7th Ave,Suite 800 Anchorage,Alaska 99501 TOTALS FOR THIS PAGE: 0 5 5 0 0 0 TOTALS FOR ALL PAGES: 0 5 5 0 0 0 bp Date 14-DEC-2012 Transmittal Number: 93270 l r • BPXA WELL DATA TRANSMITTAL DEC 14 2012 Enclosed are the materials listed below. AOGCC (BPXA FIELD LOG DATA) 8 If you have any questions, please contact Doug Dortch at the PDC at 564-4973 Delivery Contents 1 CD-ROM Containing Field Log Data & Electronic Log Prints for the following wells: B-27B 2 137 22�� C-03C2J 2 0 5%,Z2- 9 C-03CPB1 C-09B Z\Z Q 0,22`6 (.9 C-09BPB1 C-24B 2x2:0G-s l C-24BPB1 S-12B )9_2 2- S-32A S-37A `2\Z_ 092,2_250A S-37APB1 Z-34 2\2-oG L ,Z2`5-1 ' tfi-A, *4 1 13 7 / -- Please Sign and Return •ne copy of this transmittal. Thank You, Doug Dortch Petrotechnical Data Center Attn: State of Alaska - AOGCC Attn: Christine Shartzer 333 W. 7th Ave, Suite 100 Anchorage, Alaska 99501 Petrotechnical Data Center LR2-1 900 E. Benson Blvd. PO Box 196612 Anchorage,AK 99519-6612 41 V,„ _ .,:,,,.c._, STATE OF ALASKA NUV 1 6 2012 ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LO8 CC la. Well Status: ®Oil 0 Gas 0 SPLUG 0 Other 0 Abandoned 0 Suspended lb. Well Class 20AAc 25.105 20AAC 25.110 0 Exploratory 0 Stratigraphic 0 GINJ 0 WINJ 0 WAG 0 WDSPL 0 Other No.of Completions One - ®Development 0 Service 2. Operator Name: 5.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number: BP Exploration(Alaska) Inc. 10/15/2012 212-111 . 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 9/22/2012 • 50-029-21419-01-00 ' 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number: Surface: 9/29/2012 PBU S-12B• 1648'FNL, 1955'FWL, Sec.35,T12N, R12E, UM 8. KB(ft above MSL): 72 97 • 15.Field/Pool (s) Top of Productive Horizon: 4516'FNL, 3995'FWL, Sec.35,T12N, R12E, UM GL(ft above MSL): 35.47' . Prudhoe Bay/Prudhoe Bay. Total Depth: 9.Plug Back Depth(MD+TVD) 727'FNL, 759'FWL, Sec. 01,T11N, R12E, UM 12739' 8773' 4b. Location of Well(State Base Plane Coordinates,NAD: 10.Total Depth(MD+TVD) 16. Property Designation: Surface: x- 620117 - y- 5979854 • Zone- ASP4 • 12776' 8770' ' ADL 028257&028260 • TPI: x- 622207 y- 5977020 Zone- ASP4 11.SSSV Depth(MD+TVD) 17. Land Use Permit: Total Depth:x- 624275 Y- 5975563 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 1900'(Approx.) 21.Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 22.Re-Drill/Lateral Top Window MD/TVD: MWD/GR/RES, GR/CCL/MCNL 9834' 8764' 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH ND HOLE AMOUNT CASING WT. PER FT. GRADE TOP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED 20"x 30" Insulated Conductor Surface 110' Surface- 110' 36" 8 cu yds Concrete 13-3/8" 72# L-80 Surface 2699' Surface 2699' 17-1/2" 1695 sx Permafrost E, 500 sx Permafrost 9-5/8" 47# L-80 _Surface 9662' Surface, 8622' 12-1/4" 964 sx Class'G',200 sx Class'G' 7" 26# L-80 _ 9416' 9834' 8420' 8764' 8-1/2" 254 sx Class'G' _ 3-1/2"x 3-1/4" 9.3#/6.6# L-80 9253' 12776' 8289' 8770' 4-1/4" 184 sx Class'G' x 2-7/8" /6.5# /13Cr80 24. Open to production or injection? ®Yes 0 No 25. TUBING RECORD If Yes, list each interval open SIZE DEPTH SET(MD) PACKER SET(MD/ND (MD+TVD of Top&Bottom;Perforation Size and Number): ) 2"Gun Diameter,6 spf 5-1/2", 17#, L-80 9330' 9193'/8240' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. 11690'-11740' 8773'-8772' WAS HYDRAULIC FRACTURING USED DURING COMPLETION? ❑Yes ®No 11955'-12020' 8771'-8772' 12090'-12295' 8773'-8783' - DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED 12520'-12560' 8787-8783' 12616'-12696' 8780'-8776' 1 0 11661' Fish Perf Gun -. slr 2500' Freeze Protect w/60 Bbls of Diesel t A t w1.Ma 27. PRODUCTION TEST Date First Production Method of Operation(Flowing,Gas Lift,etc October 28,2012 Gas Lift Date of Test Hours Tested Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: 10/29/2012 10 Test Period 9' 46 0 110 176 480 Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 260 1620 24-Hour Rate 4 111 0 263 Not Available 28. CORE DATA Conventional Core(s)Acquired? 0 Yes ®No . Sidewall Core(s)Acquired? 0 Yes ®No. If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and presence of oil,gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions,core chips,photographs and laboratory analytical results per 20 AAC 250.071. None RRIJMS NOV 19 2012244/1 Form 10-407 Revised 10/2012 CONTINUED ON REVERSE Vi Submit Original Only 29. GEOLOGIC MARKERS(List all formations s .<ers encounter 30. FORMATION TESTS NAME ,'J TVD Well Tested? Yes ®No Permafrost Top If yes,list intervals and formations tested,briefly summarizing test Permafrost Base results. Attach separate sheets to this form,if needed,and submit detailed test information per 20 AAC 25.071. S-12B Kicked off in the Ivishak/ 9834' 8764' None Zone 4 Formation at Total Depth: Zone 4 9834' 8764' 31.List of Attachment: Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys 32. I hereby certify that the foregoing is true and correct to the best of my knowledge. Email: lastufjn@bp.com Contact: Zach Sayers,5 -5790;sayezj@bp.com \1 Title: Drilling Technologist Printed Name: . Lastu ,'/ Signatu - ' Phone 564-4091 Date: (I/N1 2_. •J 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 10/2012 Submit Original Only TREE= 6-318"CM/ WELLHEAD= McEVOY S-12B -12B SAF IOTES: "•"DUE TO INSUFFICIENT OL COLUMN ACTUATOR= BAKER C S-12 WAS P&AD ON 09127/84.S-12A WAS DRILLED 20'SE WFfIAL KB.ELE 72.97' PJC T1 """WELL ANGLE<700 @ 9955'"""2-7/8"CHROME LNR""" BF.ELEV= 36.72' / KOP= 2900' Max Angle= 38"@ 5206' 20"CONDUCTOR ^100] Datum N1D= 99&4' Datum TVD- 8800'SS ST MD2018' H5-1/7 RQM SSSV LAW NP,D=4.567 1VI) DEV GAS TYPELIFT MANV LV DRFILAS TCH PORT DATE 13-3/8"CSG,72#,L-80 BUTT,0=12.347" —1 2699' IR 6 3204 3202 10 OTIS LBD DONE RM 16 10/19/12 5 5512 5188 38 OTIS LBD DOME RM 16 10/19/12 11 I 4 7210 6586 31 OTIS LBD DOME RM 16 10/19/12 Minimum ID = 2.37 9253' 3 8157 7394 34 OTIS LBD DMY RA 0 07/01/93 6-1/2" W F D ER LTP 1 2 8703 7840 35 OTIS LBD DMY RA 0 07/01/93 1 9010 8091 35 OTIS LBD SO RM 24 10/19/12 ' I I 9118' H5-1/2"OTIS XA SLD SLV,D=4_562" —I 9176' H SBR TBG SEAL ASSY g 3193' H9-5/8"5/8"X 5-1/2"TIW HBBP FKR 0=4.750" �----' - I 9246' H5-1/2"OTIS X NP,D=4.562" / 5-1/2"WFD ER LTP,ID=2.37"(10/15/12) H 9253' ____----\_____------"- ,' 9258' H 3.70"BKR DEPLOY SLV,D=3.00" 5-1/2"TBG-IPC,17#,L-80 BUTT-M, H 9329" 9279. 3-1/2"HES X NIP,ID=2.813" .0232 bpf,ID=4.892" �' 11.- 1 9285' —I5-1/2"OTIS XN NIP,D=4.455"(BEHIND LNR) 3-112"LNR,9.3#,L-80 STL,.0087 bpf,ID=2.992' —I 9332' / N , `� 9330' H5-1/2"TIW VVLEG,ID=4.892"(BEHIND LNR) 9338' —1 ELMO TT LOGGED 12/08/86 TOP OF 4-1/2"LNR H 9410' js-NNII9332' —13-1/2"X 3-3/16"XO,D=2.786" I 9410' —f 9-5/8"X 7"BTO TEBACK SLV,ID=? 6' H9-5/8"X 7"BOT LNR HGR,ID=? , 9-5/8"CSG,47#,L-80 BUTT,D H 941=8.681" 9662' • ' 4-112"X 7"WHIPSTOCK(09/07/12) H 9834' 9720' —$ESTIMATED TOP OF CEMENT lit 1 7"LNR,26#,L-80 BUTT,.0383 bpf,ID=6.276" H —9834 MILLOUT WINDOW (S-12B) 9834'-9841' 3-$/4"LNR,6.6#,L-80 TC11,.0079 bpf,0=2.850 H 10100' PERFORATION SUMMARY 10100' H3-3/16"X 2-7/8"XO,ID=2.377" RET LOG:SLB GR/CCUITNI 4I1W ON 10/03/12 ANGLE AT TOPFERF91 °@ 11690' Note;_R r toPt DB�far-histafic`a) 11661' H FISH-PERF GUN(10/04/12 RIG) SIZE SFF IbT�ERVAAL Opn/Sgz SHOT SQZ / 2" 6 11690-11740 0 10/03/12' I 2" 6 11955-12020 0 10/03/12 2" 6 12090-12295 0 10/03/12 I 2" 6 12520-12560 0 10/03/12I 2" 6 12616-12696 0 10/03/12 ' is �' I u PBTD ---I 12739' • 2-7/8"LNR,6.5#,13CR-80 STL, H 12776' ,*1 .0058 bpf,ID=3.958" DATE REV BY COMMENTS DATE REV BY CONTENTS PRUDHOE BAY UNIT 09/30/85 !INITIAL COM PTION(S-12A) WELL: S-12B 10/07/12 NORDIC 2 CTD SIDETRACK(S-12B) PENT No: '2121110 10/13/12 PJC DRLG HO CORRECTIONS API No: 50-029-21419-01 10/29/12 SWC/JMD SET LW(10/15/12) SEC 35,T12N,R12E 1648'FNL&1955'RM.. 10/29/12 WRR/JND GLV CJO(10/19/12) BP Exploration(Alaska) North America -ALASKA- BP Page 1 of 16 Operation Summary Report Common Well Name.S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date:9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NORDIC 2 • Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/18/2012 08:00 - 10:00 2.00 MOB P PRE BEGIN RON EVENT FOR CTD SIDETRACK WITH NORDIC 2 CTD RIG AT 0800 HRS ON 9/18/2012. FINISH RIGGING DOWN. WALK AROUND RIG, PREP TO MOVE OFF WELL. 10:00 - 10:30 0.50 MOB P PRE PJSM FOR MOVING OFF WELL S-32. DISCUSS SPOTTER LOCATIONS AND RESPONSIBILITIES. 10:30 - 11:00 0.50 MOB P PRE MOVE OFF WELL AND SET RIG DOWN ABOUT 100 FT FROM NEXT WELL,S-12B. 11:00 - 18:00 7.00 MOB N SFAL PRE DHD CREW IS COMPLETING A MIT-IA TEST ON S-12B. MIT-IA TEST PASSES. VALVE SHOP SETS A TWC AND PRESSURE TEST SO THE RIG CAN N MOVE ON. 18:00 - 21:30 3.50 MOB P PRE PJSM FOR SETTING RIG MATS, PLACE RIG MATS AND PREP TO MOVE OVER WELL. 21:30 - 23:00 1.50 MOB P PRE PJSM FOR RIG MOVE,CHECK WHPS ON S-12, 300 PSI ON IA. WAIT ON VALVE SHOP TO BLEED PRESSURE. 23:00 - 00:00 1.00 MOB N SFAL PRE VALVE SHOP ON LOCATION,RIG UP TO IA AND BLEED PRESSURE FROM 300 PSI TO 0 PSI.—1 BBL OF FLUID BLED BACK WITH GAS ENTRAINED. 9/19/2012 00:00 - 01:30 1.50 'MOB N WAIT PRE VALVE SHOP CONTINUE BLEEDING PRESSURE OFF OF IA ON S-12.AFTER PRESSURE BLED,MONITOR BUILD UP RATE. 14 PSI BUILD UP IN 30 MIN FOR A TOTAL PRESSURE OF 18 PSI. RD VALVE SHOP. 01:30 - 01:45 0.25 MOB P PRE PJSM WITH RIG CREW,NORDIC SUPT,TP AND BP WSL. 01:45 - 03:00 1.25 MOB P PRE MOVE RIG OVER S-12,LOWER RIG FOR INITIAL PLACEMENT. **ACCEPT RIG AT 0300 9/19/12 ON S-12** 03:00 - 04:30 1.50 BOPSUR P PRE BLEED OFF TREE CAP TO 0 PSI, RIG UP TO WING VALVE FOR LEAK TIGHT TESTING ACROSS SWAB AT 3000 PSI. NO VISABLE LEAK. INSTALL GUAGE TO MONITOR VOIL WHILE NU BOPE. 04:30 - 06:00 1.50 BOPSUR P PRE ND TREE CAP FLANGE. NU 7-1/16"BOPE. 06:00 - 09:40 3.67 BOPSUR P PRE CONTINUE N/U BOPS. IA PRESSURE CLIMBING SLOWLY THROUGH THE MORNING,245 PSI AT 0900. 09:40 - 10:00 0.33 BOPSUR P PRE RIG EVACUATION EXERCISE WITH MAN DOWN, HIGH LEVEL H2S ALARM. ONE PERSON IDENTIFIED MISSING FROM HEADCOUNT. EXERCISE ENDS. AAR AFTERWARDS. ited 11/15/2012 9:36:00AM North America-ALASKA- BP Page 2 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date: 9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:00 - 18:00 8.00 BOPSUR P PRE GET GOOD SHELL TEST ON BOPS. TEST ALL BOP RAMS AND CHOKE VALVES. TEST BOTH TIW VALVES, INNER REEL VALVE AND CT STRIPPER. INNER REEL VALVE TEST FAILED. TEST IS WITNESSED BY LOU GRIMALDI_WITH _ AOGCC,WSL AND TOOLPUSHER. 18:00 - 22:30 4.50 BOPSUR N PRE REBUILD PRESSURE BULKHEAD AND RETEST,FAILED ON HIGH PRESSURE TEST 2ND TIME. REBUILD BULKHEAD AGAIN AND LET CURE. RIG UP FLOWBACK TANK AND HARDLINE. ,PRESSURE TEST HARDLINE. 22:30 - 23:00 0.50 BOPSUR P PRE RIG EVAC/FIRE DRILL W/AAR.ALL HANDS MUSTERED PROPERLY.GOOD COMMUNICATION. 23:00 - 00:00 1.00 BOPSUR ; N PRE LET LOCK-TITE ON REBUILT BULKHEAD CONTINUE TO CURE. PRESSURE TEST BULKHEAD, LEAK ON HIGH PRESSURE TEST. 9/20/2012 00:00 - 06:00 6.00 BOPSUR N PRE TIGHTEN AND RETEST BULKHEAD,STILL LEAKING ON HIGH PRESSURE TEST. TIGHTEN AND RETEST, DRIPPING ON HIGH PRESSURE TEST TO 3700 PSI. REBUILD BULKHEAD WITH NEW PACKING. PRESSURE TEST INNER REEL VALVE AND PACK-OFF TO 250 PSI LOW/3500 PSI HIGH. 06:00 - 07:30 1.50 BOPSUR P PRE INSTALL AND PULL TEST CT CONNECTOR AND NOZZLE. 07:30 - 08:30 1.00 BOPSUR P PRE RE-TEST INNER REEL VALVE AND CT PACKOFF, GOOD. TEST IS WITNESSED BY LOU GRIMALDI AOGCC. 08:30 - 12:00 3.50 BOPSUR P • PRE PJSM THEN CONDUCT TEST OF BOP RAMS USING MANUAL LOCKS ONLY, NO HYDRAULIC CLOSING PRESSURE. ALL 4 BOP RAMS PASS THE PRESSURE TEST USING MANUAL CLOSING PRESSURE ONLY. 12:00 - 14:30 2.50 BOPSUR P PRE PJSM THEN TEST CABLE,GOOD. INSTALL BHI CABLE HEAD. I PRESSURE TEST CONNECTOR,GOOD. 14:30 - 15:00 0.50 BOPSUR P PRE USE TEST PUMP TO PRESSURE TEST CHECK VALVES,GOOD. 15:00 - 20:00 5.00 RIGU N SFAL PRE VALVE SHOP ARRIVES TO INSTALL BLIND FLANGE ON COMPANION FLANGE. TEST MASTER AND SSV INDEPENDENTLY. 20:00 - 20:20 0.33 RIGU P PRE PJSM WITH VALVE SHOP FOR PRESSURE TESTING BLIND COMPANION FLANGE AND PULLING TWC. 20:20 - 23:00 2.67 RIGU P PRE BRING BARS,LUBRICATOR AND HOSES UP TO RIG FLOOR,CONFIRM SPACE OUT FOR PULLING TWC.PRESSURE TEST LUBRICATOR,NEW BLIND FLANGE ON COMPANION AGAINST CLOSED AND TESTED SSSV AND MASTER.LOW 250 PSI,HIGH 4900 PSI,GOOD TEST. PULL TWC,WELL ON VAC. RIG DOWN LUBRICATOR. nted 11/15/2012 9:36:00AM 414110w North America -ALASKA- BP Page 3 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) ' Start Date: 9/18/2012 End Date: 9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time: 9/30/1985 12:00:OOAM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code I NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 00:00 1.00 RIGU P PRE FILL UP TUBING,10 BBLS TO FILL. MONITOR WELL FOR 30 MIN. WELL IS STATIC,0 BBLS TO FILL. 9/21/2012 00:00 - 00:30 0.50 STMILL P WEXIT LOAD BAKER TT TOOLS TO RIG FLOOR, VERIFY GUAGE ON MILL(3.80"GO/3.81" NO-GO)AND STRING MILL(3.80"GO/3.81" NO-GO 00:30 - 00:50 0.33 STMILL P WEXIT PJSM FOR MAKING UP MILLING BHA ON COILTRAK. 00:50 - 01:20 0.50 STMILL P WEXIT MAKE UP WINDOW MILLING BHA WITH MILL, STRING MILL, MOTOR,2 JTS PH6,COILTRAK 01:20 - 02:00 0.67 STMILL P WEXIT GET ON WELL,FUNCTION EDC. TEST QTS TO 250 PSI LOW,3500 PSI HIGH, GOOD TEST. 02:00 - 02:20 0.33 STMILL P WEXIT RIH PUMPING AT MINIMUN RATE WITH DIESEL RETURNS GOING OUT TO THE TIGER TANK. 02:20 - 03:00 0.67 STMILL r N SFAL WEXIT AT 225'E-LINE PULLS OUT OF BHI HEAD. TROUBLESHOOT E-LINE CONNECTIVITY.POH AND FIND E-LINE RIGHT ABOVE UQC. CHANGE OUT SHEAR PIN AND REBOOT. 03:00 - 03:20 0.33 STMILL . N SFAL WEXIT RETEST QTS TO 250/3500 PSI. PUMP 1.5 TIMES COIL VOLUME AT SURFACE AT 3.7 BPM FOR 90 TOTAL BBLS PUMPED 03:20 - 03:45 0.42 STMILL N SFAL WEXIT RIH AND E-LINE DISCONNECTED FROM HEAD AGAIN AT 225'.POH AND TAG UP AT SURFACE 03:45 - 04:10 0.42 STMILL N ;SFAL WEXIT CALL SLB SERVICE QUALITY CONFIRM PLAN FORWARD TO CUT OFF CONNECTOR, PUMP SLACK BACK, CUT PIPE TO CONFIRM THERE IS SLACK IN THE REEL. PJSM FOR LAYING DOWN BHA AND PUMPING SLACK BACK. _ 04:10 - 05:10 1.00 STMILL N SFAL WEXIT STAND BACK INJECTOR,LAY DOWN BHA. 05:10 - 06:00 0.83 STMILL N SFAL WEXIT LINE UP TO REVERSE PUMPING SLACK BACK. 06:00 - 06:50 0.83 STMILL N SFAL WEXIT RIG UP HYDRAULIC CT CUTTER. CUT 30 FT OF CT AND FIND CABLE. CUT A TOTAL OF 105 FT OF CT,AND 70 FT OF CABLE. NOTHING UNUSUAL SEEN ON THE CABLE. NO EVIDENCE OF CABLE MOVING. 06:50 - 07:25 0.58 STMILL N SFAL WEXIT REMOVE HYDRAULIC CUTTER AND BOOT CABLE. INSTALL CT CONNECTOR AND PULL TEST. 07:25 - 08:00 0.58 STMILL N SFAL WEXIT PULL TEST CT CONNECTOR TO 35K,GOOD. M/U CT RISER. PRESSURE TEST CT RISER CONNECTION THAT WAS BROKEN. LINE UP PITS TO TAKE 40 BBLS OF FRESH WATER TO USE THAT FLUID INSTEAD OF SLICK WATER. 08:00 - 08:30 0.50 STMILL N SFAL WEXIT PUMP 40 BBLS PILL FRESH WATER FORWARD AT 3.8 BPM. CABLE IS HEARD MOVING INTERMITTANTLY. 08:30 - 11:00 2.50 STMILL N SFAL WEXIT CUT OFF 5 FT OF CT TO FIND CABLE. INSTALL CT CONNECTOR AND PULL TEST, GOOD. INSTALL BHI CABLE HEAD,PRESSURE TEST IS GOOD. Printed 11/15/2012 9:36:00AM .: North America-ALASKA- BP Page 4 of 16 r .. ,, s Operation Summary Report Common Well Name:S-12A 1 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date:9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 • Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor: NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:00 - 12:30 1.50 STMILL N SFAL WEXIT M/U CT RISER AND PRSSURE TEST CHECK VALVES AND RISER CONNECTION. CHECK VALVES FAIL HIGH PRESSURE TEST. INSTALL NEW DBPV IN UQC. RE-TEST WITH RIG'S TEST PUMP,PASS LOW AND HIGH TEST. • 12:30 - 13:30 1.00 STMILL N SFAL WEXIT M/U CT RISER TO WELL. TEST RISER CONNECTION,GOOD. PUMP FORWARD 3.8 BPM WITH FRESH WATER FOR 60 BBLS TO COMPLETE SLACK MANAGEMENT. 13:30 - 16:30 3.00 STMILL P WEXIT MAKE UP BHA#2,WINDOW MILLING BHA. TEST QTS,GOOD. RIH,TAKE RETURNS TO FLOWBACK TANK. STARTING VOLUME IS 123 BBLS IN FLOWBACK TANK. 16:30 - 18:30 2.00 STMILL P WEXIT TIE-IN DEPTH,CORRECT-10 FT. OUT MM STARTING TO GIVE ERRATIC READINGS,THEN DROPS TO O. SHUT IN WELL AND HAND CHOKE, NO PRESSURE SEEN. ROUTE RETURNS THROUGH MGS TO SEE WHAT IS COMING BACK,APPEARS TO BE SLIGHTLY GASSY WATER. START USED MUD DOWNHOLE. CONTINUE CIRC THROUGH MGS. RETURNS CLEAN UP WITH MUD ABOUT 60 BBLS FROM SURFACE, IN AND OUT MM ARE FLAT. 18:30 - 18:50 0.33 STMILL P WEXIT TAKE RETURNS TO PITS NORMALLY AFTER 1.5 TIMES BOTTOMS UP(280 BBLS) THROUGH THE MGS.CONTINUE CIRCULATING AND RIH TO TAG. 18:50 - 20:00 1.17 STMILL P WEXIT MILLING CEMENT STRINGERS AT 9789',2378 PSI FS,2.5 BPM IN/OUT,1K WOB,9.3 PPG ECD OBTAIN SPRS: PUMP#1 0.5 BPM=1062 PSI,1.0 BPM=1274 PSI,1.5 PSI=2350 PSI PUMP#2 0.5 BPM= 1051 PSI,1.0 BPM=1234 PSI,1.5 PSI=2289 PSI 20:00 - 22:00 2.00 STMILL P WEXIT MILLING AT TOP OF WHIPSTOCK AT 9832'.AT 9838'ON PINCH POINT AND BEGIN TIME MILLING AT 1'/HR. 2.55 BPM IN/OUT,2400 PSI,0.7K WOB,356 BBLS PVT,955 PSI IAP,22 PSI OAP 22:00 - 00:00 2.00 STMILL P WEXIT CONTINUE MILLING FROM 9838'TO 9840'AT 1'/HR. 2.55 BPM IN/OUT,1.5K WOB,2400 PSI 9/22/2012 00:00 - 02:30 2.50 STMILL P WEXIT CONTINUE TIME MILLING FROM 9840 TO 9842'. 2.55 BPM IN/OUT,2400 PSI,1.7K WOB,9.24 ECD, IAP 967 PSI,OAP 26 PSI 02:30 - 03:00 0.50 STMILL P WEXIT UNANNOUNCED KICK WHILE MILLING DRILL. PIT GAIN WAS NOTICED RIGHT AWAY AND RESPONSE WAS SIMULATED.AAR WITH CREW. 03:00 - 06:40 3.67 STMILL P WEXIT MILL WINDOW FROM 9842 TO 9844. 2.55 BPM IN/OUT,2410 PSI,1.6 DHWOB. Printed 11/15/2012 9:36:00AM 410 North America -ALASKA- BP Page 5 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) ' Start Date: 9/18/2012 End Date:9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:40 - 08:30 1.83 STMILL P WEXIT CONTINUE MILLING WINDOW AT 9845.7 FT. 2.56/2.57 BPM©2270 PSI,0.59K DWOB. APPEARS TO BE CASING EXIT POINT AT 9845.3 FT. TIME DRILL UNTIL STRING REAMER IS FULLY OUT. AFTER STRING REAMER IS OUT,DRILL --RATHOLE AT 5-10 FT/HR. 08:30 - 09:20 0.83 STMILL P WEXIT DRILL RATHOLE TO 9856 FT. MAKE 3 UP/DOWN PASSES SLOWLY THROUGH WINDOW. DRY DRIFT IS CLEAN,NOTHING SEEN. TAG BOTTOM AT 9856 FT. SAMPLE FROM MIDWAY DOWN RATHOLE IS 80%FORMATION. 09:20 - 11:25 2.08 STMILL P WEXIT PULL ABOVE WINDOW AND FLOW CHECK WELL,NO FLOW. OPEN EDC, PUMP 3.7 BPM ON THE WAY OUT OF HOLE. 11:25 - 12:40 1.25 DRILL P PROD1 STOP AT 100 FT AND FLOW CHECK WELL. PJSM FOR L/D BHA. UD BHA#2. MILL IS 3.78"NO-GO, STRING REAMER IS 3.79"NO-GO. MAKE UP BHA#1, BUILD SECTION BHA WITH 3.4 DEG XTREME. MAKE UP CT RISER. 12:40 - 15:00 2.33 DRILL P PROD1 PRESSURE TEST QTS. RIH. PUMP 1.0 BPM THROUGH OPEN EDC WHILE RIH. TIE-IN DEPTH FROM 9670 FT. CORRECT-12 FT. 15:00 - 16:00 1.00 DRILL P PROD1 STOP ABOVE WINDOW AND CLOSE EDC. PASS THROUGH WINDOW AT 10R, NOTHING SEEN. _D_RILL FROM 9857 FT TO 9905 FT. 16:00 - 17:00 1.00 DRILL P PROD1 PICK UP FROM 9905 FT,PULL THROUGH WINDOW TO RUN DIRECTIONAL PROJECTIONS. TOOL IS GIVING SLIGHTLY MORE BUILD DLS THEN EXPECTED. 17:00 - 19:00 2.00 DRILL P PROD1 RIH TO 9905 AND DRILL AHEAD TO 9970'AT 2.7 BPM IN/OUT WITH 8.6 PPG POWERPRO 2700 PSI,1.2K DHWOB 19:00 - 20:00 1.00 DRILL P PROD1 PULL UP TO CLEAN OUT 9-5/8"CASING,OPEN EDC ABOVE WINDOW AT 9804'AND POH TO 9300'PUMPING AT 3.6 BPM. 20:00 - 21:10 1.17 DRILL P PROD1 DRILL AHEAD FROM 9970 TO 10010'.2.55 BPM IN/OUT WITH 8.6 PPG POWERPRO 2670 PSI,1.4K DHWOB. END BUILD SECTION AT 10,010'. 21:10 - 23:10 2.00 DRILL P PROD1 POH,5 MIN FLOW CHECK ABOVE THE WINDOW,OPEN EDC AT 9804'AND POH PUMPING AT 3.6 BPM. 2660 PSI,8.6 PPG POWERPRO. 23:10 - 23:30 0.33 DRILL P PROD1 PERFORM JOG AT 250'TO CLEAR BIT. FLOW CHECK FOR 5 MIN,NO FLOW. 23:30 - 00:00 0.50 DRILL P PROD1 PJSM FOR LAYING DOWN BHA. LAY DOWN BUILD BHA. BIT RATING 1-2. Printed 11/15/2012 9:36:00AM 1110111, . -:•: --" -� North America-ALASKA- BP Page 6 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date: 9/30/2012 X3-012HQ-C:DRILL(3,680,392 00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.:NORDIC 2 Spud Date/Time:9/30/1985 12:00:OOAM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/23/2012 00:00 - 00:30 0.50 DRILL P PROD1 MU LATERAL BHA WITH NEW 3-3/4 X 4-1/4" HYCALOG HELIOS BIT,1.2 AKO MOTOR AND COILTRAK WITH RES. 00:30 - 00:50 0.33 DRILL P PROD1 GET ON WELL,PRESSURE TEST QTS TO 250/3500 PSI,GOOD TEST. 00:50 - 02:30 1.67 DRILL P PROD1 RIH PUMPING 0.6 BPM, 1070 PSI,80 FPM. 02:30 - 03:45 1.25 DRILL P PROD1 -LOG FROM 9660'TO TD TO TIE-IN TO PARENT WELL AND DETERMINE RA TAG DEPTH. CORRECTION OF(-12.5').RA TAG AT 9840.5', KOP 9830.5'. 03:45 - 03:50 0.08 DRILL P PROD1 OBTAIN SPRS AT 10,000' PUMP#1 0.5 BPM=992 PSI,1.0 BPM=1230 PSI,1.5 PSI=2289 PSI PUMP#2 0.5 BPM=970 PSI,1.0 BPM=1172 PSI,1.5 PSI=2263 PSI 03:50 - 06:00 2.17 DRILL P PROD1 DRILL AHEAD FROM 10010'WITH 2.5 BPM IN/OUT OF 8.6 PPG POWERPRO. DHWOB 1.4K#,2366 PSI,9.35 ECD,340 BBLS PVT, IAP 1106,OAP 24 06:00 - 07:40 1.67 DRILL P PROD1 CONTINUE DRILLING FROM 10080 FT. 2.73/2.72 BPM @ 2430 PSI FREE SPIN. PUMP 20 BBLS LO-VIS FOLLOWED BY 10 -BELS HI-VIS SWEEP. CONDUCT KICK WHILE DRILLING DRILL. CUP OF FLUID IS HELD UNDER SENSOR IN PIT#3. CONDUCT AAR AFTERWARDS. DRILL TO 10150 FT. 07:40 - 08:10 0.50 DRILL P PROD1 WIPER TRIP FROM 10150 FT TO WINDOW. CLEAN PASS UP AND DOWN. 08:10 - 10:00 1.83 DRILL P PROD1 GET SLOW PUMP PRESSURES WITH BOTH PUMPS. WHEN LO/HI VIS SWEEP COMES BACK, SLIGHT INCREASE IN CUTTINGS. DRILL TO 10207 FT. DLS IS TOO HIGH, AROUND 20 DEG/100 FT. DISCUSS WITH ODE,DECISION IS MADE TO POOH FOR LESSER BEND. 10:00 - 12:00 2.00 DRILL P PROD1 PULL THROUGH WINDOW AND PERFORM JOG. OPEN EDC, FLOW CHECK WELL. FLOW CHECK IS GOOD. PUMP 3.6 BPM ALL THE WAY OUT. 12:00 - 13:30 1.50 DRILL P PROD1 FLOW CHECK WELL AT SURFACE,GOOD. STAND BACK BHA#3. DIAL MOTOR DOWN TO 0.95 DEG. RE-RUN BIT. 13:30 - 14:10 0.67 DRILL P PROD1 M/U CT RISER,PRESSURE TEST QTS,GOOD. 14:10 - 16:30 2.33 DRILL P PROD1 RIH BHA#4. TIE-IN DEPTH AT 9710 FT. 16:30 - 18:15 1.75 DRILL P PROD1 DRILL FROM 10207 FT. 3.0/3.0 BPM @ 2750 PSI FREE SPIN. ROP IS AROUND 70-90 FT/HR WITH 2.5K DWOB. AT 10275 PUMP 20 BBLS LO VIS FOLLOWED BY 10 BBLS HI VIS SWEEP. DRILL TO 10,350'. 18:15 - 19:00 0.75 DRILL P PROD1 WIPER TRIP TO BELOW WINDOW AT 9860'. RIH BACK TO DRILLING DEPTH. Printed 11/15/2012 9.36:00AM North America-ALASKA- BP Page 7 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date:9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor: NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:00 - 21:00 2.00 DRILL P PROD1 DRILL AHEAD FROM 10,350 TO 10,500. 3 BPM IN/OUT,2500 PSI,2.9 DHWOB,9.4 ECD, 996 IAP,34 OAP. AT 10425'PUMP 20 BBL LO-VIS FOLLOWED BY 10 BBLS HI-VIS. 21:00 - 23:00 2.00 DRILL P PROD1 WIPER TRIP TO 9300'TO CLEAN OUT 9-5/8" CASING. ABOVE WINDOW,FLOW CHECK FOR 5 MIN, NO FLOW. OPEN EDC AND CIRCULATE AT 3.7 BPM WHILE PULLING UP HOLE. RIH AND CLOSE EDC ABOVE WINDOW, CONTINUE DOWN TO 10,500'. 23:00 - 00:00 1.00 DRILL P PROD1 DRILL AHEAD FROM 10,500'TO 10,530'. 2.55 BPM IN/OUT,2420 PSI,1.5K#DHWOB, —80 FPM ROP 9/24/2012 00:00 - 01:10 1.17 DRILL P PROD1 DRILL FROM 10,530'TO 10,547'. PUMPING 2.7 BPM,1.5K#WOB 01:10 - 01:30 0.33 DRILL P PROD1 ROP SLOWED TO 10 FPH,AT 10547'BHA WIPER TRIP AND PREP FOR MUD SWAP. 01:30 - 02:30 1.00 DRILL P PROD1 PERFORM MUD SWAP,WHILE ATTEMPTING TO MAKE DRILLING PROGRESS, NO PROGRESS. 02:30 - 04:00 1.50 DRILL P PROD1 DRILL FROM 10,550'TO 10,555', WEIGHT STACKING WITH NO FORWARD DRILLING, VARY PUMP RATES FROM 2.5 TO 3 BPM WITH NO CHANGE IN ROP. 04:00 - 06:00 2.00 DRILL P PROD1 POH FOR BIT CHECK. PULL ABOVE WINDOW AND PERFORM 5 MIN FLOW CHECK,NO FLOW. OPEN EDC AND CIRC AT 3.5 BPM,2424 PSI 06:00 - 07:30 1.50 DRILL P PROD1 POOH. L/D BHA#5. BIT IS 1-1,BALLED UP. 07:30 - 08:00 0.50 DRILL P PROD1 FUNCTION TEST BOPE.ALL EQUIPMENT FUNCTIONED PROPERLY. 08:00 - 11:10 3.17 DRILL P PROD1 M/U BHA#6 WITH HCC SLICK BIT. RIH. TIE-IN DEPTH AT 9710 FT. CORRECT-13 FT. 11:10 - 13:20 2.17 DRILL P PROD1 GET SPP FOR BOTH PUMPS. PUMP 1: 0.5 BPM=857 PSI,1 BPM=1139 PSI PUMP 2: 0.5 BPM=886 PSI,1 BPM=1157 PSI TAG BOTTOM LIGHTLY AT 10560 FT AND DRILL. INITIAL ROP IS 60-80 FT/HR WITH 2.2K DWOB. CONTINUE HOLDING 100L FOR NOW TO CONTINUE LH TURN INTO POLYGON. AT 11:50 START CENTRIFUGE. PUMP 20 BBLS LO THEN 10 BBLS HI-VIS SWEEP. DRILL TO 10700 FT. 13:20 - 14:20 1.00 DRILL P PROD1 WIPER TRIP FROM 10700 FT TO WINDOW. CLEAN PASS UP AND DOWN. INCREASE IN CUTTINGS SEEN WHEN LO/HI VIS SWEEP COMES BACK. Printed 11/15/2012 9:36:00AM • North America -ALASKA- BP Page 8 of 16 Operation Summary Report - -_ _--- ---- -- --- - _ .......----------- Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date: 9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:20 - 18:00 3.67 DRILL P PROD1 DRILL FROM 10700 FT. ROP IS 60-80 FT/HR IN ZONE 4 WITH 2-3K DWOB. CONTINUE HOLDING 100L FOR NOW TO CONTINUE LH TURN INTO POLYGON. 3.0/3.0 BPM @ 2900 PSI FREE SPIN AFTER 10760 FT DRILLING SLOWS TO 10-20 FT/HR. DRILL TO 10,850'. 18:00 - 20:00 2.00 DRILL P PROD1 WIPER TRIP TO 9300 TO CLEAN OUT 9-5/8" CASING. OPEN EDC ABOVE WINDOW AND INCREASE PUMP RATE TO 3.5 BPM WHILE PULLING UP TO 9300'. 20:00 - 20:30 0.50 DRILL P PROD1 OBTAIN SPRS 10,800': PUMP#1 0.5 BPM= 1146 PSI.1 BPM= 1500 PSI,2.5 BPM=2589 PSI PUMP#2 0.5 BPM= 1106 PSI,1 BPM= 1458 PSI,2.55 BPM=2688 PSI CONTINUE IN HOLE TO 10.850'. 20:30 - 22:45 2.25 DRILL P PROD1 BACK ON BOTTOM DRILLING AT 10.850'. 2800 PSI FREESPIN AT 2.85 BPM DRILLING AT 2.85 BPM IN/OUT. DHWOB 1.5-2.5 K#, ROP OF 90 FPH PUMP 20 BBLS OF LO-VIS FOLLOWED BY 10 BBLS OF HI-VIS. DRILL AHEAD TO 11,000'. 22:45 - 23:25 0.67 DRILL P PROD1 WIPER TRIP TO WINDOW. PULL UP AT 30 FPM,PUMPING 2.8 BPM. 23:25 - 23:35 0.17 DRILL P PROD1 LOG TIE-IN AT RA TAG WITH(+5.5)' CORRECTION 23:35 - 00:00 0.42 DRILL P PROD1 RIH TO DRILLING DEPTH OF 11,000'. 9/25/2012 00:00 - 02:15 2.25 DRILL P PROD1 DRILL AHEAD FROM 11,000' 2870 PSI FS.2 85 BPM IN/OUT.150 PSI MW, 2.2K#DHWOB. PVT 388 BBLS,1290 PSI IAP.. 45 PSI OAP. ROP 70 FPH TO 11,100'. ROP INCREASE TO 100 FPH FROM 11000'TO 11150'. 02:15 - 04:30 2.25 DRILL P PROD1 LONG WIPER TO 9300'TO CLEAN OUT 9-5/8" CASING. OPEN EDC ABOVE WINDOW AND CIRC AT 3.5 BPM. RIH BACK TO DRILLING DEPTH. MAN DOWN WITH AAR DURING WIPER TRIP. 04:30 - 06:30 2.00 DRILL P PROD1 DRILL AHEAD FROM 11,150'AT 2.8 BPM IN/OUT,3150 PSI. DHWOB 3K#,9.4 PPG ECD,1224 PSI, IAP,46 PSI, OAP,377 BBLS PVT. PUMP 20 BBL LO-VIS FOLLOWED BU 10 BBLS HI-VIS. ROP 50-100 FPH. DRILL TO 11305 FT. Printed 11/15/2012 9:36:00AM • North America -ALASKA- BP 11110 Page 9 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date: 9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:30 - 10:30 4.00 DRILL P PROD1 CONTINUE DRILLING FROM 11305 FT TO 11450 FT. ROP IS AROUND 60-100 FT/HR. CONTINUE LH TURN TO MATCH DIRECTIONAL PLAN. DRILL AT 3.0/3.0 BPM @ 3000 PSI FREE SPIN. PUMP 20 BBLS LO THEN 10 BBLS HI VIS SWEEP AT 11380 FT. DRILL TO 11450 FT. 10:30 - 13:30 3.00 DRILL P PROD1 WIPER TRIP FROM 11450 FT TO INSIDE 5-1/2" TUBING. 13:30 - 15:00 1.50 DRILL P PROD1 DRILL FROM 11,450 TO 11,560'.ROP 120 FPH, 2.8 BPM IN/OUT. 15:00 - 16:30 1.50 DRILL P PROD1 DRILL AT 11,560',RETURNS DROPPING, CONTINUE DRILLING 20'AND RETURNS START TO COME BACK.ONLY 450 BBLS OF MUD ON LOCATION SO WIPER TRIP TO WINDOW WHILE PUMPING 2.5 BPM,0.6 BPM RETURNS. 16:30 - 22:00 5.50 DRILL _N DPRB PROD1 ONCE INSIDE CASED HOLE,STOP PUMPING DOWN THE COIL.FILL BACKSIDE DOWN THE • KILL TAKING RETURNS TO THE CHOKE LINE AT 1.1 BPM IN,0.65 BPM OUT.SLOWLY RECIPROCATE PIPE WHILE WAITING ON USED MUD FROM MI. 22:00 - 22:30 0.50 DRILL P PROD1 4 TRUCKS OF MUD ON LOCATION PJSM FOR DRILLING AHEAD AND FLUIDS HANDLING WITH CREW,TRUCKPUSHER, SITE CONTROL,SLB AND WSL. 22:30 - 23:30 1.00 DRILL P PROD1 RIH FROM WINDOW PUMPING 2.5 BPM DOWN THE COIL,0.9 BPM DOWN THE BACKSIDE WITH 2.4 BPM RETURNS. AT 11,400'LOSSES INCREASE TO 50%. 23:30 - 00:00 0.50 DRILL P PROD1 DRILL AHEAD FROM 11582',2300 PSI FREESPIN,2.5 BPM IN/0.9 BPM OUT,1.4K# DHWOB.NO FLUID BEING PUMPED DOWN THE BACKSIDE. 9/26/2012 00:00 - 01:20 1.33 DRILL P PROD1 DRILL FROM 11,600 WITH 100%LOSSES,2.5 BPM DOWN COIL AT 2170 PSI,0.6 BPM DOWN THE BACKSIDE WITH 0.6 BPM RETURNS. ROP 30-50 FPH. 01:20 - 01:40 0.33 DRILL P PROD1 BHA WIPER TRIP AND OBTAIN SPRS AT 11650' PUMP#1 PUMPING DOWN BACKSIDE PUMP#2 0.5 BPM=626 PSI,1 BPM=842 PSI, 2.5 BPM=1956 PSI 01:40 - 02:15 0.58 DRILL P PROD1 CONTINUE DRILLING AT 2.6 BPM AT 2490 PSI, 0.6 BPM DOWN BACKSIDE WITH 0.7 BPM RETURNS 2.5 K#DHWOB,9.68 PPG ECD WITH 8.6 PPG USED POWERPRO.DRILL TO 11,710'. 02:15 - 02:40 0.42 DRILL P PROD1 WIPER TO LOSS ZONE AT 11,550'.MAINTAIN HOLE FILL ON BACKSIDE.PUMPING 2.65 BPM DOWN COIL AT 2278 PSI.EVERYTHING PUMPED DOWN COIL IS LOST TO THE HOLE. Printed 11/15/2012 9:36:OOAM • North America -ALASKA- BP Page 10 of Operation Summar/ Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/18/2012 End Date:9/30/2012 X3-012HQ-C:DRILL(3,680,392 00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:40 - 04:15 1.58 DRILL P PROD1 DRILL AHEAD FROM 11,710'.AT 2.7 BPM DOWN COIL AT 2200 PSI,0.6 BPM DOWN BACKSIDE WITH 0.6 BPM RETURNS.2K# DHWOB,9.41 ECD,0 PSI ON IA,30 PSI ON OA. ROP SLOWED 10-20 FPM AT 11750'. ROP BACK TO 70 FPH AT 11760'. DRILL TO 11,800'. 04:15 - 04:30 0.25 DRILL P PROD1 "SHORT WIPER TO LOSS INTERVAL AT 11,560'. PUMPING 2.6 BPM,MAINTAIN HOLE FILL ON BACKSIDE. 04:30 - 05:30 1.00 DRILL P PROD1 DRILL AHEAD AT 11,900'AT 2.7 BPM AND 2300 PSI,0.6 BIM ON BACKSIDE WITH 0.6 BPM RETURNS. ROP 100 FPH. 05:30 - 07:00 1.50 DRILL P PROD1 WIPER TRIP TO WINDOW POH AT 25 FPM,PUMPING AT 2.75 BPM 07:00 - 08:30 1.50 DRILL P .PROD1 TIE-IN LOG TO RA TAG AT WINDOW WITH +2.5'CORRECTION RIH TO BOTTOM 08:30 - 09:30 1.00 DRILL P PROD1 DRILL AHEAD FROM 11,900'TO 12,050'AT 2.74 BPM WITH 2406 PSI PUMPING 2.6 BPM, MAINTAIN HOLE FILL ON BACKSIDE.0.88 BPM IN 0.93 BPM RETURNS. START PUMPING 8.6 PPG KCL DOWN COIL AT 2.71 BPM RECORD SLOW PUPM RATE 2.75 BPM 84 SPM 1985 PSI 1.0 BPM 29 SPM 220 PSI.0.75 BPM 22 SPM 81 PSI ON PUMP 2 09:30 - 10:00 0.50 DRILL N DPRB PROD1 WIPER TRIP TO LOSS ZONE. TIGHT HOLE AT 11,638'.WORK PIPE AND PUMP 20 BBL MUD SWEEP. 10:00 - 15:00 5.00 DRILL N DPRB PROD1 WORK PIPE TO 68K FREE TO GO DOWN WITH 20K. PUMP COIL VOLUME OF 60 BBL MUD DOWN COIL AND DISPLACE AT 3.1 BPM WITH 2100 PSI WORK PIPE THE BIT IS TURNING FREELY AND NO INDICATION OF STUCK BHA PUMP DOWN COIL WITH 8.5 PPG KCL FILLING THE BACK SIDE WITH MUD NO LOSSES. GRADUALLY INCREASE PULL TO 65K. PIPE BREAKING FREE WITH 5K DOWN WEIGHT GRADUALLY INCREASE PULL IN 5K INCREMENTS TO 70K PUMP 3OBBL AND 60 BBL MUD SWEEPS WITH NEW MUD NO PRESSURE INCREASE WORK PIPE UP TO 11,638'WITH 70K PIPE UNABLE TO GO DOWN SET DOWN 25K AND CONTINUE PUMPING DOWN COIL KEEPING HOLE FULL WITH MUD. 15:00 - 18:00 3.00 DRILL N DPRB PROD1 STOP PUMPING DOWN COIL.SET DOWN 25K PIPE FREE. PRESSURE UP THE BACK SIDE AND DOWN THE COIL AT THE SAME TIME AND WORK PIPE. PIPE FREE TO GO DOWN BUT STICKING AT THE SAME UP DEPTH OF 11,638' MIX 36 BBL HIGH VIS PILL WHILE WORKING PIPE. Printed 11/15/2012 9:36:OOAM North America-ALASKA- BP Page 11 of 16 Operation Summary Report Common Well Name:S-12A 1 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date: 9/30/2012 IX3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor: NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 18:00 - 20:00 2.00 DRILL N DPRB PROD1 WITH 15 BBLS OF HI-VIS OUTSIDE OF THE COIL,PULL UP AND PIPE CAME FREE. PULL UP INTO CASED HOLE. 20:00 - 00:00 4.00 DRILL N DPRB PROD1 IN CASED HOLE,CIRCULATE AT MINIMUM RATE DOWN COIL WITH KCL AT 0.92 BPM. MAINTAIN HOLE FILL ON BACKSIDE WITH MUD AT 0.75 BPM IN,0.25 BPM OUT. 9/27/2012 00:00 - 04:00 4.00 DRILL N DPRB 12,050.00 PROD1 CIRCULATE IN CASED HOLE.0.5 BPM DOWN COIL AT 80 PSI WITH KCL,1.8 BPM DOWN BACKSIDE KCL WITH 0.3 BPM RETURNS. PULL UP 50'ON COIL EVERY 30 MIN. RETURNS DECREASING WITH KCL,HIGHER RATE REQUIRED TO KEEP BACKSIDE FULL. 04:00 - 05:00 1.00 DRILL N DPRB 12,050.00 PROD1 CONTINUE CIRCULATING AND FILLING THE BACKSIDE. PJSM TO BRING EXTRA REEL HARD LINE AND UNUONS UP TO THE REEL HOUSE. LIFT REEL HARD LINE AND UNIONS AND INSTALL IN RACK. 05:00 - 09:30 4.50 DRILL N DPRB 12,050.00 PROD1 CIRCULATE IN CASED HOLE.0.5 BPM DOWN COIL AT 80 PSI WITH KCL,1.8 BPM DOWN BACKSIDE KCL WITH 0.3 BPM RETURNS. .PULL UP 50'ON COIL EVERY 30 MIN. 09:30 - 11:00 1.50 DRILL N DPRB 12,050.00 PROD1 ORDERS RECEIVED TO RIH AND CROSS THE FAULT AT 11,560'WITH THE BHA. RIH TO 9865'.PASS THROUGH THE WINDOW WITH PUMPS OFF AND TOOL FACE SET IN AS-DRILLED POSITION. FILL HOLE FROM THE BACK SIDE WITH 8.5 PPG KCL. OBTAIN TIE-IN AT WINDOW,+7' CORRECTION. RIH AT 24 FPM PUMPING DOWN COIL AT 2.6 BPM WITH 1242 PSI. RIH TO 11,145'.CONFIRM PICK UP WEIGHT OF 40K AND SLACK OFF WEIGHT AT 19K RIH AT 10 FPM.PASS THROUGH FAULT AT 11,560'WITH BIT AT 11,610 AND 50'OF BHA BELOW FAULT. THE EDC ABOVE THE FAULT AT 11,545'. NO CHANGE IN PUMP PRESSURE OR DOWN WEIGHT. POH TO POSITION BIT ABOVE THE FAULT. NO OVER PULL. 11:00 - 12:00 1.00 DRILL N DPRB 12,050.00 PROD1 POH TO 11,510'AT 21 FPM PUMP AT 2.93 BPM WITH 1465 PSI RECIPROCATE PIPE 60'STROKES. CONSULT WITH ODE AND TOWN TEAM. 12:00 - 12:45 0.75 DRILL N DPRB 1,205.00 PROD1 RIH AT 21 FPM. PUMP 2.9 BPM WITH 1465 PSI NO WEIGHT OR PRESSURE CHANGE. TAG AT 12,050'(TD) FREE SPIN AT 2.9 BPM WITH 1450 PSI. 12:45 - 18:00 5.25 DRILL P PROD1 DRILL AHEAD TO 12170'AT 2.8 BPM WITH 1460 PSI,1 0 BPM ON BACKSIDE WITH 1 0 BPM RETURNS. PUMPING DOWN THE COIL AND FILLING THE BACK SIDE WITH 8.5 PPG KCL. ROP 70-90 FPH. WIPER TRIP BACK TO 50'ABOVE THE TOP OF THE FAULT EVERY 50'DRILLED. Printed 11/15/2012 9:36:00AM • North America -ALASKA- BP Page 12 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/18/2012 End Date:9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project: Prudhoe Bay Site:PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor: NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 20:40 2.67 DRILL P PROD1 DRILL AHEAD FROM 12,170'.DIFFICULTY DRILLING WITH KCL,PUMP 20 BBLS OF MUD AND DRILL AHEAD WITH MUD AT THE BIT AT 130 FPH. 20:40 - 21:00 0.33 DRILL P PROD1 WIPER TRIP TO 50'ABOVE LOSS ZONE. CONTINUE PUMPING AT DRILLING RATE OF 3 BPM,MAINTAIN HOLE FILL ON BACKSIDE. 21:00 - 22:30 1.50 DRILL P PROD1 PULLING UP FOR WIPER,TIGHT HOLE AT 11,638',OVER PULL TO 60K, UNABLE TO CONTINUE UP HOLE.RIH SLOWLY WITH NORMAL WEIGHT. PUMP 20 BBL MUD SWEEP.WITH 5 BBLS OF MUD OUTSIDE THE BIT, PULL UP THROUGH TIGHT SPOT. PULL TO 50K AND CONTINUE MOVING UP HOLE.PULL UP TO 11500'. CIRCULATE AND THEN RIH TO DRILLING DEPTH. 22:30 - 22:35 0.08 DRILL P PROD1 OBTAIN SPRS WITH 8.4 PPG KCL: PUMP#1 ON BACKSIDE PUMP#2 0.5 BPM=105 PSI,1.0 BPM=275 PSI,2.5 BPM=1165 PSI START 10 BBLS MUD DOWN THE COIL 22:35 - 23:25 0.83 DRILL P PROD1 ON BOTTOM DRILLING FROM 12,275'2.8 BPM AT 1454 PSI,1300 PSI FREESPIN,1 BPM ON BACKSIDE WITH 1.5 BPM RETURNS.3.1K# DHWOB,9.68 ECD. DRILLING AT 160 FPH. 23:25 - 00:00 0.58 DRILL P PROD1 WIPER TO 11,500'PUMPING 3 BPM DOWN COIL FILLING THE BACKSIDE. PUMP HI-VIS PILL TO COME OUT BIT AS BHA CROSSES THE LOSS ZONE. 9/28/2012 00:00 - 01:00 1.00 DRILL :P PROD1 CONTINUE WIPER TO 11,500'PUMPING 3 BPM DOWN COIL FILLING THE BACKSIDE.PUMP HI-VIS PILL TO COME OUT BIT AS BHA CROSSES THE LOSS ZONE. 01:00 - 02:00 1.00 DRILL P PROD1 BACK ON BOTTOM DRILLING FROM 12,325'. MUD AT THE BIT PUMPING 3 BPM.DRILL TO 12,375'AT 60-70 FPH. ROP SLOWS WHEN ON KCL. 02:00 - 03:10 1.17 DRILL P PROD1 WIPER TO LOSS ZONE,NO OVERPULLS COMING THROUGH 11,630'WITH KCL AT THE BIT. 03:10 - 04:40 1.50 DRILL P PROD1 DRILL AHEAD FROM 12,375'.DIFFICULTY WITH WEIGHT TRANSFER,DRILLING WITH -13K.PUMP 50 BBLS OF MUD AND ROP AND WEIGHT TRANSFER INCREASE. DRILL TO 12,425'. BACKSIDE PUMP OFF,2.9 BPM OF KCL DOWN COIL WITH 0.6 BPM RETURNS. 04:40 - 06:00 1.33 DRILL P PROD1 WIPER TRIP TO LOSS ZONE. NO OVERPULLS COMING THROUGH 11,630'WITH KCL AT THE BIT. Printed 11/15/2012 9:36:00AM North America -ALASKA- BP Page 13 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/18/2012 End Date:9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project: Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(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 DRILL P PROD1 DRILL AHEAD FROM 12,425'. DIFFICULTY WITH WEIGHT TRANSFER,DRILLING WITH -13K. PUMP 60 BBLS OF MUD AND ROP UP TO 60 FPH AND WEIGHT TRANSFER INCREASE. DRILL TO 12,465'. ONCE THE MUD IS PAST THE BHA HAVING DIFFICULTY SLIDING. HAVE TO WORK PIPE AND NOT ABLE TO GO DOWN AFTER TURN AROUND. BACKSIDE PUMP OFF,2.9 BPM OF KCL DOWN COIL WITH 0.6 BPM RETURNS. 08:00 - 09:30 1.50 DRILL P PROD1 WIPER TRIP TO WINDOW.CONSULT WITH ODE TO POH. 09:30 - 11:30 2.00 DRILL P PROD1 POH TO SURFACE.NO OVER PULL. SLOW PUMP TO.5 BPM TO PULL THROUGH WINDOW. OPEN EDC AND PUMP AT 3.5 BPM WHILE POH AT 25-30 FPM. HOLE TAKING 2 BPM. 11:30 - 12:00 0.50 DRILL P PROD1 FUNCTION TEST BOP FROM OPS CAB PANEL. 12:00 - 13:30 1.50 DRILL P PROD1 LAY DOWN BIT AND BHA. BIT GRADE 1-1-CT-G-X-I-ER-PR PICK UP A USED HYCALOG BIT 3.75"X 4.25". TYPE SRH3611M-B4 PICK UP A NEW MUD MOTOR WITH BEND SET AT 1.3 DEG PICK UP AGITATOR AND PLACE ON TOP OF MUD MOTOR PICK UP A FLOAT SUB TO REPLACE THE DUAL BACK PRESSURE VALVES. KEEPING HOLE FULL. LOSSES AT 2 BPM 13:30 - 14:00 0.50 DRILL P PROD1 RUN IN WITH BHA.CONNECT INJECTOR AND ATTACH TO COIL. TEST QUICK TEST SUB.300 PSI LOW AND 3500 PSI HIGH 14:00 - 17:00 3.00 DRILL P PROD1 RIH WITH NEW BHA TO 300'SHALLOW TEST AGITATOR RIH AT 90 FPM PUMPING AT 1.38 BPM 17:00 - 19:30 2.50 DRILL N RREP PROD1 TROUBLESHOOT SCR FAILURE. ELECTRICIAN REPLACED CAPACITOR/ RESISTOR ON#3. BHA AT 9500',CIRCULATE DOWN COIL AND FILL BACKSIDE. 19:30 - 21:00 1.50 DRILL P PROD1 RIH FROM 9500',LOG RA TAG WITH(-13.5)' CORRECTION. PUMPING 2 BPM DOWN THE COIL AT 1125 PSI,0.84 BPM DOWN THE BACKSIDE WITH 0.77 BPM RETURNS WHILE RIH AT 25 FPM. 21:00 - 21:45 0.75 DRILL P PROD1 AT 10,830'FULL RETURNS, PUMPING 2 BPM IN/OUT.AT 10,860'SET DOWN 5K, PULL UP AND TRY TO GET THROUGH IT PUMPING 0.7 BPM IN/OUT,SET DOWN AT 10,860'WITH 100-200 PSI MOTOR WORK.CALL ODE FOR PLAN FORWARD. Printed 11/15/2012 9:36:00AM North America -ALASKA- BPS a , 14 of 16 Operation Summary Report Common Well Name:S-12A 1 AFE No Event Type. RE-ENTER-ONSHORE(RON) Start Date: 9/18/2012 End Date: 9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay -Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:OOAM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:45 - 22:45 1.00 DRILL P PROD1 LOST RETURNS,12 BBLS TO FILL HOLE WITH PUMPS BACK ON DOWN COIL AND BACKSIDE. RIH FROM 10700', SLIGHT WEIGHT CHANGE AT 10,860'BUT CONTINUE RIH TO 11,120'.START TAKING COIL WEIGHT, DHWOB TO 0.5K#WITH INCREASED RETURNS. INCREASE RATE DOWN COIL TO 2.6 BPM,0.5 BPM RETURNS WITH NO BACKSIDE PUMP. RIH WITH RETURNS INCREASING AT 11,300' AND 11,450'. 22:45 - 00:00 1.25 DRILL P PROD1 AT 11,450'WITH NEAR FULL RETURNS,2.7 IN/ 2.4 OUT,WIPER TRIP TO 9300'TO CLEAN 9-5/8"CASING.MUD AT BIT WITH 20 BBL PILL AT START OF WIPER. 9/29/2012 00:00 - 01:30 1.50 DRILL P PROD1 JOG AND OPEN EDC ABOVE WINDOW.PUMP SECOND 20 BBL MUD PILL.PUMP AT 4 BPM AT 2300 PSI,3.75 BPM RETURNS. PULL UP THROUGH 9-5/8"CASING INTO 5-1/2"TUBING TO 9235'.MUD ACROSS THE SHAKERS HAS SAND CUTTINGS.CLOSE EDC ABOVE THE WINDOW,RIH TO 11,450'. 01:30 - 02:30 1.00 DRILL P PROD1 RIH TO 11,540'TAG WITH 4K DOWN PUMPING 0.7 BPM, FULL RETURNS. INCREASE PUMP RATE TO 2.7 BPM, RIH AT 5 FPM WITH NO MOTOR WORK OR DHWOB AT 11.548' RETURNS DROP TO 0.5 BPM. CONTINUE IN HOLE PUMPING 2 BPM IN/1 BPM OUT ACROSS LOSS ZONE AND TAG AT 12,470'. 02:30 - 03:45 1.25 DRILL P PROD1 200'WIPER,ORIENT BHA AND DRILL AHEAD FROM 12,470'WITH MUD AT THE BIT PUMPING 2.8 BPM IN/1.2 BPM OUT, NO BACKSIDE PUMP. ROP AT 100 FPH ON MUD, ONCE 20 BBLS OF MUD IS OUT OF THE BIT, NO ROP ON KCL. DRILL TO 12525'. 03:45 - 05:00 1.25 DRILL P PROD1 WIPER TO LOSS ZONE AT 11,500'.PUMPING 2.6 BPM WITH 0.7 BPM RETURNS. 05:00 - 06:00 1.00 DRILL P PROD1 DRILL AHEAD FROM 12,525'.DIFFICULTY WITH WEIGHT TRANSFER, DRILLING WITH -10K. PUMP 40 BBLS OF MUD AND ROP PICKS UP AND WEIGHT TRANSFER INCREASE. DRILL TO 12,575'. BACKSIDE PUMP OFF,2.8 BPM OF KCL DOWN COIL WITH 0.6 BPM RETURNS. 06:00 - 07:45 1.75 DRILL P PROD1 WIPER TO LOSS ZONE AT 11,500'. PUMPING 2.6 BPM WITH 0.7 BPM RETURNS. OBTAIN SLOW PUMP RATE#2 PUMP:2.8 BPM 1915 PSI. 1 BPM 388 PSI.0.5 BPM 157 PSI. RIH WITH NO PUMP PRESSURE OR WEIGHT CHANGES. Printed 11/15/2012 9.36:00AM North America -ALASKA- BP Page 15 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/18/2012 End Date: 9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NORDIC 2 Spud Date/Time: 9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:45 - 09:15 1.50 DRILL P PROD1 DRILL AHEAD FROM 12,575.PUMP 40 BBLS OF MUD AND ROP PICKS UP AND WEIGHT TRANSFER INCREASE. CHANGED MUD SWEEP STRATEGY: PUMP 10 BBL MUD FOLLOWED BY 60 BBL KCL(COIL VOLUME)FOLLOWED BY 10 BBL MUD. ABLE TO DRILL WITH LESS DIFFICULTY. CONTINUED WITH THIS IN ORDER TO CONSERVE MUD DRILL TO 12,650'. BACKSIDE PUMP OFF,2.8 BPM OF KCL DOWN COIL WITH 0.4 BPM RETURNS. 09:15 - 11:15 2.00 DRILL P PROD1 WIPER TO LOSS ZONE AT 11,500'.AFTER DRILLING 75' PUMPING 2.8 BPM,1879 PSI.WITH 0.34 BPM RETURNS. POH UP WEIGHT MAX 40K RIH WITH NO PUMP PRESSURE OR WEIGHT CHANG ES„12K DOWN WEIGHT. 11:15 - 14:00 2.75 DRILL P PROD1 DRILL AHEAD FROM 12,650'. CHANGED MUD SWEEP STRATEGY: PUMP 10 BBL MUD FOLLOWED BY 60 BBL KCL(COIL VOLUME)FOLLOWED BY 10 BBL MUD. ABLE TO DRILL WITH LESS DIFFICULTY. CONTINUED WITH THIS IN ORDER TO CONSERVE MUD DRILL TO 12,725'. BACKSIDE PUMP OFF,2.8 BPM,2023 PSI OF KCL DOWN COIL WITH 0.4 BPM RETURNS. WOB 3K, ROP 60 FPH,LOSSES AT 2.6 BPM 14:00 - 16:00 2.00 DRILL P PROD1 WIPER TO LOSS ZONE AT 11,500'.AFTER DRILLING 75' PUMPING 2.7 BPM,1850 PSI.WITH 0.34 BPM RETURNS. POH UP WEIGHT MAX 40K RIH WITH NO PUMP PRESSURE OR WEIGHT CHANGES,11K DOWN WEIGHT. _ 16:00 - 17:30 1.50 DRILL P PROD1 DRILL AHEAD FROM 12,725'. CHANGED MUD SWEEP STRATEGY: PUMP 10 BBL MUD FOLLOWED BY 60 BBL KCL(COIL VOLUME)FOLLOWED BY 10 BBL MUD. ABLE TO DRILL WITH LESS DIFFICULTY. CONTINUED WITH THIS IN ORDER TO CONSERVE MUD DRILL TO 12,769'. BACKSIDE PUMP OFF.2.8 BPM,2985 PSI OF KCL DOWN COIL WITH 0.4 BPM RETURNS. WOB 2.5K. ROP 26 FPH, LOSSES AT 2.6 BPM. ROP TOO SLOW AND DIFFICULT TO CONTINUE DRILLING. CALL TD AT 12,769'. *(CORRECTED to 12,776'MD PER MCNL LOG)* 17:30 - 21:00 3.50 DRILL P PROD1 POH TO WINDOW,ABOVE WINDOW OPEN EDC.WIPER TO THE 5-1/2"TUBING AT 9300'. RIH AND TIE-IN AT RA TAG WITH(15.5)' CORRECTION. Printed 11/15/2012 9:36:OOAM North America ALASKA- BP • Page 16 of 16 Operation Summary Report Common Well Name:S-12A AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/18/2012 End Date:9/30/2012 X3-012HQ-C:DRILL(3,680,392.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 00:00 3.00 DRILL P PROD1 RIH TO 10,830'AND SET DOWN WITH 5K FOUR TIMES.ATTEMPT TO RIH WITH 0.6 BPM PUMP RATE,SET DOWN. BRING PUMP RATE UP TO 2.8 BPM AND RIH AT 5 FPM TO CONTINUE DOWN HOLE WITH 200 PSI MOTOR WORK.WORK THROUGH INTERVAL SEVERAL TIMES.CONTINUE IN HOLE TO 11,550'AND SET DOWN,PULL UP AND CIRCULATE WITH RETURNS INCREASING, AFTER 20 BBLS PUMPED,LOST RETURNS AND RIH TO 11,675'. 9/30/2012 00:00 - 02:30 2.50 DRILL P PROD1 WIPER TRIP TO 9250'TO ATTEMPT CLEANING CUTTINGS FROM 9-5/8"CASING. PULL HEAVY AT 10,820'.OPEN EDC ABOVE THE WINDOW. CONTINUE UP TO 9250'WHILE CIRCULATING 50 BBL HI-VIS MUD PILL UP TO SURFACE AT 4.3 BPM WITH 2.15 BPM RETURNS. 02:30 - 03:00 0.50 DRILL P PROD1 RIH AND TIE-IN AT 9715'WITH(+3)' CORRECTION.CLOSE EDC ABOVE WINDOW 03:00 - 04:30 1.50 DRILL P PROD1 RIH AT 30 FPM PUMPING 1.6 BPM DOWN COIL AT 883 PSI,1.3 BPM DOWN BACKSIDE WITH 1.25 BPM RETURNS.SAW SHALE AT 10,820' WITH WEIGHT,MOTOR WORK AND DHWOB, RIH ON 3RD ATTEMPT. 04:30 - 05:00 0.50 DRILL P PROD1 DIFFICULTY GETTING PAST 12,700'.WORK DOWN TO 12,7502',OVERPULLS TO 60K. PULL UP AND RIH ONLY MAKING IT TO 12,732' WITH 68K OVERPULL. 05:00 - 09:45 4.75 DRILL P PROD1 POH LAYING IN 50 BBL LINER PILL OF MUD WITH BEADS. POH PUMPING AT 3.5 BPM MAX UP WEIGHT 42K OPEN EDC AT THE WINDOW. FLOW CHECK WELL AT WINDOW. WORK PIPE ACROSS 9 5/8"CASING SECTION AND CIRCULATE AT 3.5 BPM APPLY PAINT MARKER ON COIL AT 9000'AND 6000' PJSM ON LAY DOWN BHA WHILE POH. NORDIC,BAKER,SLB CREWS AND WSL. 09:45 - 10:30 0.75 DRILL P PROD1 LAY DOWN BHA. BIT CONDITION 1-1 STATIC LOSSES 1.26 BPH CLEAR RIG FLOOR. Printed 11/15/2012 9:36:00AM North America-ALASKA- BP Page 1 of 9 Operation Summary Report Common Well Name:S-12A AFE No Event Type: COM-ONSHORE(CON) Start Date:9/30/2012 End Date: 10/7/2012 X3-012HQ-C:DRILL(1,486,371.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor: NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/30/2012 10:30 - 12:30 2.00 CASING P RUNPRD BEGIN COMPLETION EVENT PICK UP INJECTOR. REMOVE BAKER E-LINE HEAD CONNECTOR(HEAD DOWN)FROM UPPER QUICK CONNECTOR(UQC) PUMP E-LINE SLACK FORWARD AT 3-4 BPM WITH FRESH WATER.RECOVERED 290' EXCESS.CUT EXCESS E-LINE.BRING BAKER TOOLS TO PIPE SHED. 12:30 - 13:00 0.50 CASING P RUNPRD CUT SLB COIL TUBING CONNECTOR AND TRIM COIL. INSTALL BAKER COIL TUBING CONNECTOR. PULL TEST TO 40K AND PRESSURE TEST 450 PSI AND 4000 PSI. 13:00 - 14:00 1.00 CASING P RUNPRD POSITION INJECTOR OVER DRAIN HOLE. LOAD 3/4"BALL IN COIL AND LAUNCH TO DRIFT COIL. PUMP BALL THROUGH COIL AND RECOVER IN BALL CATCHER AT INJECTOR. 14:00 - 15:30 1.50 CASING P RUNPRD RIG UP TO RUN LINER. PREPARE SAFETY JOINT ON SKATE. PJSM WITH NORDIC AND SBL CREWS, BAKER REP AND WSL. STATIC FLUID LOSS 0.8 BPM 15:30 - 18:00 2.50 CASING P RUNPRD RUN 2 7/8"STL 6.4#13CR-80 LINER WITH CEMENTRALIZERS ON BOX END. MAKE UP SHOE TRACK PER PROGRAM. DRIFT FIRST 5 JOINTS RUN WITH 2.35"OD DRIFT TO CONFIRM NO JOINT DISTORTION AFTER MAKE UP. 18:00 - 19:30 1.50 CASING P RUNPRD STAB SAFETY JOINT AND FILL LINER WITH KCL. LOAD AND STRAP PH6 JOINTS FOR BHA. 19:30 - 19:45 0.25 CASING P RUNPRD PJSM WITH NIGHT CREW FOR RUNNING LINER 19:45 - 22:30 2.75 CASING P RUNPRD MU LINER JOINTS 51-86 OF 2-7/8"STL, TORQUE MAKE UP TO 1000. FILL LINER EVERY 20 JOINTS. MAINTAIN HOLE FILL ON THE BACKSIDE, LOSSES 2 BPM. 22:30 - 23:30 1.00 CASING P RUNPRD MAKE UP 3-1/4 JOINTS. DRIFT FIRST 5 CONNECTIONS.ON 4TH JOINT IN THE HOLE, DRIFT COMES BACK WET. INSTALL SAFETY JOINT AND CIRCULATING HOSE,CLOSE ANNULAR AND PUMP 1.5 TIMES LINER VOLUME IN THE HOLE FOR A TOTAL OF 28 BBLS PUMPED.FLOW CHECK,NO FLOW. MAKE UP 2 MORE JOINTS OF 3-1/4"AND DRIFT, DRIFT IS DRY. 23:30 - 00:00 0.50 CASING P RUNPRD CONTINUE MAKING UP LINER FILLING HOLE ON BACKSIDE,FILL LINER EVERY 20 JOINTS. 10/1/2012 00:00 - 01:30 1.50 CASING P RUNPRD FINISH MAKING UP LINER,MAKE UP BAKER CEMENTING TOOL AND 6 JOINTS OF PH6. TOTAL 3-1/4"X 2-7/8"LINER LENGTH IS 3508.17'. *(CORRECTED TO 3,518.17'MD PER MCNL LOG)* Printed 11/15/2012 9:36:24AM North America -ALASKA- BP Page 2 of 9 Operation Summary Report Common Well Name:S-12A AFE No Event Type: COM-ONSHORE(CON) Start Date: 9/30/2012 End Date: 10/7/2012 X3-012HQ-C:DRILL(1,486,371.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:OOAM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA _ UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:30 - 04:00 2.50 CASING P RUNPRD PICK UP INJECTOR,MAKE UP CONNECTOR AND GET ON WELL. TEST QTS TO 250/3500 PSI. 04:00 - 07:30 3.50 CASING P RUNPRD TIE-IN TO END OF PIPE FLAG OF 6000'WITH BOTTOM OF BHA(LINER SHOE)AT 9698' (-27.5)'CORRECTION. POW 44K,RIH WEIGHT OF 22.5K,0.5 BPM -DOWN COIL AT 130 PSI,WITH 1.9 BPM DOWN BACKSIDE OF 8.4 PPG KCL. CONTINUE IN OPEN HOLE,SAW SHALES AT 10,806'AND 11383'. 07:30 - 11:30 4.00 CASING P RUNPRD WORK LINER. FROM 12,599'TO 12,696" WORKING PIPE WITH 65K-75K UP AND 25K DOWN.MAKING STEADY PROGRESS. PUMPING KCL AT 1.5 BPM DOWN COIL WITH 500 PSI FILLING THE ANNULUS WITH KCL AT 1.9 BPM. RETURNS 2.1 BPM.LOOSING 1.3 BPM 11:30 - 13:00 1.50 CASING P RUNPRD STOP PUMPING AND PICK UP TO ALLOW INDEXING GUIDE SHOE TO REPOSITION. PUMP SLOWLY AND RIH.WORK PIPE. PUMP 20 BBL MUD FOLLOWED WITH 60 BBL KCL. REPEAT THIS TWO TIMES. WORK PIPE DOWN TO 12,701' CONSULT WITH ODE AND TOWN TEAM. DECISION MADE TO CEMENT THE LINER AT THIS DEPTH. PUMP MUD OUT OF THE COIL AND LINER AND TO THE LOSS ZONE.TO CLEAR ANNULUS OF MUD. 13:00 - 15:30 2.50 CASING P RUNPRD THE BALL LAUNCHING VALVE IS BADLY POSITIONED. PULL UP 25'TO BALL LAUNCHER POSITION AND RIH TO CONFIRM ABILITY TO REACH 12,701'. LINER WENT DOWN TO 12,716'. BALL LAUNCHING VALVE IN GOOD POSITION TO DROP BALL. OPEN LAUNCHER, DROP 5/8"ALUMINUM BALL. PUMP BALL DOWN COIL AND PUMPED AT 2.5 BPM WITH 1047 PSI. WHILE PUMPING BALL DOWN THE STRING WEIGHT INCREASED TO FULL WEIGHT. COIL OPERATOR SLACKED OFF AND THE LINER WENT TO 12,725'. THE STRING WEIGHT INCREASED AGAIN AND THE LINER WAS PUSHED TO 12,747'. Printed 11/15/2012 9:36:24AM • North America-ALASKA- BP II Page 3 of 9 Operation Summary Report Common Well Name:S-12A AFE No Event Type: COM-ONSHORE(CON) Start Date:9/30/2012 End Date: 10/7/2012 X3-012HQ-C:DRILL(1,486,371.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NORDIC 2 Spud Date/Time: 9/30/1985 12:00:OOAM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:30 - 17:30 2.00 CASING P RUNPRD PUMP SLOWLY TO CONFIRM THE BALL IS ON SEAT.POP-OFF SET AT 120 PSI. PRESSURE UP TO 3820 PSI TO RELEASE THE GEN2 SELRT. PICKED UP TO STRING WEIGHT AND 5'. RAN BACK DOWN AND SET WEIGHT ON LINER. THE LINER MOVED DOWN HOLE TO 12.752'. -THE COIL OPERATOR SET THE INJECTOR SO IT WOULD FOLLOW THE LINER DOWN THE 'HOLE IF THE WEIGHT INCREASED. 'WHILE OBSERVING THE WEIGHT THE LINER SLIPPED DOWN THE HOLE TO 12.757' AFTER 30 MINUTES THE LINER SLIPPED DOWN THE HOLE TO 12.758'. ALL WEIGHTS AND MEASUREMENTS INDICATE THAT THE RUNNING TOOL IS STILL IN THE LINER. 17:30 - 18:30 1.00 CASING P RUNPRD CHANGE OUT FOR RIG CREW AND SLB CEMENTERS. MAKE ROUNDS AND CHECK EQUIPMENT. MONITOR COIL WEIGHT TO ENSURE LINER DOESN'T FALL ANY FURTHER IN HOLE. 18:30 - 19:00 0.50 CEMT P RUNPRD PJSM TO RIG UP CEMENTERS AND -PRESSURE TEST. 19:00 - 19:45 0.75 CEMT P RUNPRD PRIME UP PUMP AND PRESSURE TEST CEMENT LINE TO 250/6500 PSI,GOOD TEST 19:45 - 20:30 0.75 CASING P RUNPRD LOAD FLUID INTO PITS FOR LOSSES DURING CEMENT JOB. 20:30 - 20:45 0.25 CEMT P RUNPRD PJSM FOR CEMENT 20:45 - 23:00 2.25 CEMT P RUNPRD BATCH UP 42 BBLS OF CLASS G 15.8 PPG Z`r1f/IENT. BATCH UP TIME OF 21:10.PUMP 38.3 BBLS CEMENT AT 2 BPM WITH 0.7 BPM RETURNS.CHASE CEMENT WITH 100 BBLS BIOZAN AT 2 BPM WITH 0.7 BPM RETURNS. SLOW DOWN PUMP WHEN LEADING EDGE OF CEMENT IS AT THE SELRT. ZERO OUT MM WHEN CEMENT EXITS THE SHOE. PICK UP 13 FT THEN SET BACK DOWN 10K, NOW 10 FT HIGHER. BRING PUMP ON SLOWLY TO PUSH PEE WEE DART DOWN. PICK UP AND SIDE EXHAUST 5 BBLS,THEN SET DOWN. PRESSURE UP AND LAUNCH LWP AT 3100 PSI. BUMP PLUG AT 21.8 BBLS AFTER LWP IS LAUNCHED. CEMENT IN PLACE AT 22:55 WITH 36.3 larrlifsiD LINER. 23:00 - 00:00 1.00 CASING P RUNPRD POH AT 100 FPM CHASING CONTAMINATED CEMENT UPHOLE, PUMPING 1.9 BPM WITH 1.1 BPM RETURNS. 10/2/2012 00:00 - 01:00 1.00 CASING P RUNPRD POH WITH CEMENTING BHA. PUMPING 2 BPM WITH 1.3 BPM RETURNS PULLING AT 100 FPH. 01:00 - 01:20 0.33 CASING P RUNPRD FLOW CHECK BELOW BOPE FOR 5 MIN,NO FLOW. STAND BACK INJECTOR. Printed 11/15/2012 9:36:24AM • North America -ALASKA- BP Page 4 of 9 Operation Summary Report Common Well Name:S-12A AFE No Event Type:COM-ONSHORE(CON) Start Date:9/30/2012 End Date: 10/7/2012 X3-012HQ-C:DRILL(1,486,371.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:20 - 02:00 0.67 CASING P RUNPRD PJSM FOR LAYING DOWN BHA. LAY DOWN CEMENTING BHA,RECOVER 5/8" BALL. 02:00 - 04:45 2.75 EVAL P OTHCMP INSTALL NIGHT CAP AND FILL HOLE ACROSS THE TOP. LOAD 50 JOINTS OF CSH IN PIPE SHED. BRING TOOLS TO PIPE SHED. LOOSING FLUID TO THE WELL AT 0.37 BPM, 20-22 BPH. 04:45 - 06:00 1.25 EVAL P OTHCMP CUT 13'EXCESS E-LINE AND REBOOT. 06:00 - 11:30 5.50 EVAL P OTHCMP PJSM ON PICKUP BHA AND HANDLING NUCLEAR SOURCE. IN ATTENDANCE: NORDIC CREW,SLB LOGGER,SLB COIL AND WSL. MAKE UP CLEAN-OUT/LOGGING BHA. PICK UP 2.30"OD HUGHES D331 MILL,2 1/8" BAKER STRAIGHT MUD MOTOR. SCHLUMBERGER MEMORY CNL-GR-CCL LOGGING TOOLS. PICK UP 1 1/4"CSH IN SINGLES THEN RUN STANDS FROM THE DERRICK. CIRCULATE THROUGH STRING EVERY 40 JTS RUN TO CONFIRM CLEAR. 11:30 - 11:45 0.25 EVAL P OTHCMP PICK UP INJECTOR HEAD.MAKE UP CROSS OVER TO CTC. MAKE UP TOOLS AND LINES. 11:45 - 12:30 0.75 EVAL P OTHCMP STAB INJECTOR ONTO WELL. TEST QTS,300 PSI AND 3500 PSI FOR 5 MINUTES EACH 12:30 - 14:45 2.25 EVAL P OTHCMP RIH WITH CLEAN OUT AND LOGGING BHA ON COIL CORRELATED DEPTH WITH MEMORY LOGGER RIH TO 9000'PUMPING DOWN THE COIL AT 1.03 BPM WITH 791 PSI FILLING DOWN THE ANNULUS AT 1.0 BPM. LOSSES 0.3 TO 0.5 BPM 14:45 - 19:00 4.25 EVAL P OTHCMP RIH FROM 9000'TO TD AT 30 FPM FOR MEMORY LOG PUMP 38 BBL PERF'PILL DOWN COIL AT 1 PBM TO BE AT MILL WHEN START POH. TAG UP ON CEMENT STRINGERS AT 12,000'. DRILL UP AND WASH AWAY EASILY. RIH TAGGED LANDING COLLAR @ 12,747'MD 19:00 - 00:00 5.00 EVAL P OTHCMP POH FROM 12,747'-9,000'MD @ 60 FPM FOR MEMORY LOGS EOP FLAG @ 8000'MD(END OF LOGS AT 11,720') TAGGED UP @ 3714'MD FLOW CHECK(NO FLOW)-SET BACK INJECTOR 10/3/2012 00:00 - 02:30 2.50 EVAL P OTHCMP CONT. POH W/MEMORY TOOLS. L/D MEMORY TOOLS 02:30 - 03:00 0.50 BOPSUR P OTHCMP PJSM W/RIG CREW,SLB CREW&WSL IN OPS CAB FOR TESTING BOPE Printed 11/15/2012 9:36:24AM North America-ALASKA- BP Page 5 of 9 Operation Summary Report Common Well Name:S-12A AFE No Event Type:COM-ONSHORE(CON) Start Date:9/30/2012 End Date: 10/7/2012 X3-012HQ-C:DRILL(1,486,371.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task I Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 09:00 6.00 BOPSUR P OTHCMP TEST SWAB AND MASTER VALVES SEPARATELY FROM THE TOP TO 250 AND 3500 PSI. PASSED. OPEN BOP RAM DOORS. INSPECT RAMS SEALS. CLOSE DOORS. PRESSURE TEST BOP BODY. 250 PSI AND 3500 PSI. CHART. PASSED. 09:00 - 16:00 7.00 BOPSUR N RREP OTHCMP WEEP PORT ON BLIND/SHEAR RAM BODY LEAKING. HOLD PJSM TO TROUBLE SHOOT AND REPAIR. DISASSEMBLE BOOSTER ACTUATORS ON BLIND SHEAR BOPS. REMOVE AND REPLACE 'DAMAGED SEAL COMPONENTS. RE-ASSEMBLE BOPS COMPONENTS. 16:00 - 17:00 1.00 BOPSUR N RREP OTHCMP PRESSURE TEST BOP BODY TO 250 AND 3500 PSI. PASSED. 17:00 - 00:00 7.00 BOPSUR P OTHCMP CONTINUE TO TEST B�P EQUIPMENT. TESTED LOWER COMBI,ANNULAR,VBR'S, UPPER COMBI(MAN KILL,CHOKE HCR), UPPER COMBI(MAN CHOKE,MAN.KILL), INNER REEL VALVE AND INJECTOR PACK-OFF.PASSED. PERFORMED DRAW DOWN TEST-PASSED TEST WITNESSED BY WSL AND RIG TOOL PUSHER 10/4/2012 00:00 - 02:30 2.50 BOPSUR N RREP OTHCMP TESTED MANUAL LOCKS ON LOWER COMBI &UPPER COMBI-PASSED TESTED MANUAL LOCKS ON VBRS&BLIND RAMS-FAILED CONDUCTED LEAK TIGHT TEST FROM THE TOP ON MASTER VALVE&SWAB- 250 LOW/ 3500 PSI HIGH-PASSED 02:30 - 04:00 1.50 BOPSUR N RREP OTHCMP OPEN RAM DOORS TO INSPECT VBRS AND BLIND RAMS-SEALS BAD CHANGE OUT SEALS ON VBR AND BLIND RAMS INSPECT COIL AND CUT 6'OF FLAT WEAR 'SECTION OF COIL CUT&REPLACE E-LINE CONNECTOR RE-CONNECT COIL CONNECTOR WITH BAKER THRU TUBING 04:00 - 09:30 5.50 BOPSUR N RREP OTHCMP PRESSURE TEST BOP BODY. 250 PSI LOW AND 3500 PSI HIGH. RE-TEST BLIND RAMS&VBRS WITH TEST JOINT. RE-TEST MANUAL LOCK DOWNS ON BLIND RAMS AND VBRS. ALL TESTS PASSED. CHART SAME. 09:30 - 10:15 0.75 PERFOB P OTHCMP HOLD PJSM FOR BULLHEAD WELL TO FILL HOLE. INSTALL NIGHT CAP. PRESS TEST TO 250 AND 3500 PSI. CHART TEST. PASSED. Printed 11/15/2012 9:36:24AM • North America ALASKA BP • Page 6 of 9 Operation Summary Report Common Well Name.S-12A AFE No Event Type:COM-ONSHORE(CON) Start Date:9/30/2012 End Date: 10/7/2012 X3-012HQ-C:DRILL(1,486,371.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:15 - 12:00 1.75 PERFOB P OTHCMP OPEN WELL. NO WHP. BULLHEAD WELL AT 5.1 BPM DOWN KILL LINE. PRESSURE INCREASE WITH 17 BBLS PUMPED INDICATING FLUID"CAUGHT"AT THIS LEVEL. CONTINUE TO PUMP AT 5 BPM WITH 1095 PSI PUMP PRESSURE. SHUT DOWN PUMPS WITH 320 BBLS AWAY. 12:00 - 13:00 1.00 PERFOB P OTHCMP MONITOR WELL FOR FLOW AND/OR LOSSES. FILL WELL AFTER 1 HOUR. 17 BBLS TO FILL WELL. SAME FILL AFTER EXTENDED BOP TEST TIME(24 HRS+) LOAD GUNS IN TO PIPE SHED. 13:00 - 14:00 1.00 PERFOB P OTHCMP RU FLOOR TO MU PERF GUNS. HOLD ADDITIONAL PJSM TO DISCUSS HANDLING AND RUNNING SEQUENCE. FILL WELL ACROSS TOP DURING BHA RUNNING PROCESS. ESTIMATED LOSSES AT 45 BPH. 14:00 - 16:00 2.00 PERFOB P OTHCMP MU 49 AND 1 PARTIAL GUN. 2.0"PJ,6 SPF SLB TCP GUNS. 16:00 - 17:30 1.50 PERFOB P OTHCMP RUN 1 1/4"CSH TUBING(85 JTS)FROM DERRICK. 17:30 - 21:00 3.50 PERFOB P OTHCMP RIH F/3798'-12,739'MD RUN IN HOLE WITH PERFORATING ASSEMBLY-FROM BHA AT 3798'MD TO FLAG _AT 1-T,793'MD. 21:00 - 21:15 0.25 PERFOB P OTHCMP CONTINUE IN HOLE AND TAG PBTD AT 12,737' MD(CORRECT DEPTH TO LOGGING PBTD AT 12,739.08'MD. PICKUP TO 11,705'MD(6' BELOW BOTTOM PERF DEPTH)AND ESTABLISH BASELINE CIRCUATION RATES AT 0.50 BPM,252 PSI,1.70 BPM,1665 PSI. PICKUP WEIGHT AT DEPTH=39 KLBS,SLACK OFF=18 KLBS. 21:15 - 21:30 0.25 PERFOB N DPRB 12,695.00 OTHCMP COMPLETE E-FIRE PERFORATING SEQUENCE. FIRE GUNS AT 21:20 WHILE PULLING UP HOLE AT 6 FPM. POSITIVE INDICATIONS OF SHOTS FIRING INCLUDE: (1) 3 BBL FLUID LOSS AND(2)POSITIVE DETECTION ON SEISMIC SENSOR. PERFORATION INTERVALS(440'NET ZONE 4A): 11690'-11740'MD 50'(45P) .� 11955'-12020'MD 65'(45P) 12090'-12295'MD 205'(46P) 12520'-12560'MD 40'(46P) 12616'-12696'MD 80'(46P) ATTEMPTED TO PULL OUT OF HOLE, WELLBORE SHOWED AN IMMEDIATE 3 BBL LOSS,OVERPULL 30 KLBS. 21:30 - 22:00 0.50 PERFOB N DPRB 12,695.00 OTHCMP ATTEMPTED TO WORK TCP GUN BHA FREE, INITIAL P/U=39 KLBS MAX OVERPULL=75 KLBS.MADE 3 ATTEMPTS WITH NO MOVEMENT FROM THE STUCK BHA.PULLED 20 KLBS OVER AN HELD TENSION ON THE ASSEMBLY WHILE WAITING ON MUD TO BE DELIVERED. 22:00 - 00:00 2.00 PERFOB N DPRB 12,695.00 OTHCMP WAIT ON HIGH LUBE POLYMER MUD. Printed 11/15/2012 9:36:24AM North America-ALASKA- BP Page 7 of 9 Operation Summary Report Common Well Name:S-12A AFE No Event Type:COM-ONSHORE(CON) Start Date: 9/30/2012 End Date: 10/7/2012 X3-012HQ-C:DRILL(1,486,371.00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum: S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10/5/2012 00:00 - 06:30 6.50 PERFOB N DPRB 12,695.00 OTHCMP WAITING ON MUD 06:30 - 10:00 3.50 PERFOB N DPRB 12,965.00 OTHCMP PUMP 150 BBLS HIVIS MUD WITH4% LUBRCANTS DOWN TO GUNS. CLOSE CHOKE AND ATTEMPT BULLHEAD 30 BBLS DOWN PAST GUNS. DISPLACE REMAINING MUD UP AROUND COIL. WORK PIPE FROM 10K#TO 70K#UP WT. PULL LIMITATION IS SLB EFIRE HEAD RATED TO 30K# NO MOVEMENT. 10:00 - 10:30 0.50 PERFOB N DPRB 12,965.00 OTHCMP DISCUSS PUMPING MINERAL OIL WITH TOWN TEAM. HAVE SLB TOWN MODEL WEIGHT TRANSFER DOWN TO E-FIRE HEAD. ESTIMATE MAX PULL AT 80%COIL YIELD IS 23K#AT GUN HEAD. THUS CANNOT OVERPULL ON GUN WEAK POINT. 10:30 - 12:30 2.00 PERFOB N DPRB 12,965.00 OTHCMP PUMP 40 BBLS MINERAL OIL DOWN COIL. SHUT IN CHOKE AND DISPLACE 10 BBLS OIL DOWN TO PERFS- DISPLACE REMAINING OIL AROUND 1 1/4" CSH TUBING AND COIL. ALLOW TO SOAK. WORK PIPE FROM 10K# • TO 80 K#SEVERAL TIMES. PARK WITH 80K# UP WT. NO MOVEMENT 12:30 - 13:45 1.25 PERFOB N DPRB 12,965.00 OTHCMP DROP AND CIRCULATE 5/8"BALL DOWN TO LOWER HYDRAULIC DISCONNECT. BALL ON SEAT AFTER 69 BBLS PUMPED PRESSURE COIL TO 3300 PSI. DISCONNECT SHEARED 1 1/4"CSH TUBING RELEASED FROM GUN BHA. 13:45 - 17:15 3.50 PERFOB N DPRB 12,695.00 OTHCMP HOLD PJSM FOR POOH. HOLD 200 PSI WHP WHILE PULLING THROUGH LINER AT 30 FPM. HOLD PJSM. TAG UP WITH BHA. 17:15 - 19:00 1.75 PERFOB N DPRB 12,695.00 OTHCMP FLOW CHECK. GET OFF WELL. UNSTAB COIL. LD BHA. STANDBACK CSH. 19:00 - 20:00 1.00 PERFOB N DPRB 12,695.00 OTHCMP CLEAN RIG FLOOR,LOAD FISHING TOOLS INTO PIPE SHED LAYOUT FISHING TOOLS WAIT ON FISHING BHA FROM BAKER SERVICE REP. 20:00 - 20:30 0.50 PERFOB N DPRB 12,695.00 OTHCMP PJSM WITH RIG CREW,BAKER FISHING PER, TOOLPUSHER&WSL TO M/U FISHING ASSEMBLY AND RIH WITH TOOLS 20:30 - 00:00 3.50 PERFOB N DPRB 12,695.00 OTHCMP M/U FISHING BHA WITH BAKER"GS" LATCHING ASSEMBLY RIH WITH FISHING BHA F/0-2920'MD M/U TO COIL RIH F/2920'-9250'MD 10/6/2012 00:00 - 01:45 1.75 PERFOB N DPRB 12,695.00 OTHCMP RIH F/9250'-11,661'MD P/U WEIGHT=36K S/O WEIGHT=18K Printed 11/15/2012 9:36:24AM North America-ALASKA- BP • Page 8 of 9 Operation Summary Report Common Well Name:S-12A AFE No Event Type:COM-ONSHORE(CON) Start Date:9/30/2012 End Date: 10/7/2012 'X3-012HQ-C:DRILL(1,486,371.00) Project:Prudhoe Bay Site:PB S Pad Rig Name/No.: NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:45 - 06:00 4.25 PERFOB N DPRB 12,695.00 OTHCMP LATCH ONTO TOP OF FISH AT 11,661'MD S/O WEIGHT= 12-14K P/U WEIGHT=44-54K CYCLE JARS 15 TIMES(FISH AT 11,659'MD) CYCLE JARS 35 TIMES(FISH AT 11,646'MD) 06:00 - 09:30 3.50 PERFOB N DPRB 12,695.00 OTHCMP PUMP DOWN COIL TO RELEASE GS SPEAR FROM FISH. HOLD PJSM. FLOW CHECK. CIRCULATE OUT OF HOLE. CONTINUE TO LOSE 0.25-0.5 BPM. 09:30 - 11:45 2.25 PERFOB N DPRB 12,695.00 OTHCMP AT SURFACE. FLOW CHECK WELL. HOLD PJSM. LD PH6 PIPE AND TOOLS. LD 1-1/4"RENTAL CSH IN SINGLES. STAND BACK NORDIC CSH IN DERRICK. 11:45 - 12:30 0.75 PERFOB N DPRB 12,695.00 OTHCMP MU BAKER SEAL STEM ON PH6 BHA. STAB COIL. GET ON WELL. TEST QTS TO 250 AND 3500 PSI. CHART TEST. PASSED. 12:30 - 14:30 2.00 PERFOB N DPRB 12,695.00 OTHCMP RUN IN HOLE. 35k#UP WT AT 9000'. 14:30 - 15:15 0.75 PERFOB N DPRB 12,695.00 OTHCMP STING INTO LINER TOP AT 9270' (UNCORRECTED) SET DOWN 10K#. INJECT KCL DOWN COIL: 0.5 BPM 1985 PSI 0.75 BPM 2190 PSI 1.0 BPM 2230 PSI 1.5 BPM 3150 PSI COIL PRESSURE BLEED OFF TO 0 PSI QUICKLY WITH PUMPS OFF. 15:15 - 17:00 1.75 PERFOB N DPRB 12,695.00 OTHCMP UNSTING FROM LINER TOP. HOLD PJSM. CIRCULATE OUT OF HOLE. 17:00 - 17:30 0.50 PERFOB N DPRB 12,695.00 OTHCMP AT SURFACE. FLOW CHECK WELL. HOLD PJSM. GET OFF WELL. UNSTAB COIL. LD BHA TOOLS. 17:30 - 19:00 1.50 RIGD P OTHCMP PJSM W/LITTLE RED SERVICES, RIG UP AND PUMP 60 BBLS 6.8 PPG 75 DEG ARCTIC GRADE DIESEL INTO COIL,BULLHEAD DIESEL INTO WELLBORE TO FREEZE PROTECT 5-1/2"TUBING TO 2500'TVD/MD. CALCULATED WELL OVERBALANCE AT 8800' TVDSS WITH 2500'DIESEL IN TUBING ABOVE 8.4 PPG KCL=295 PSI. 19:00 - 22:30 3.50 WHSUR P OTHCMP PJSM W/SCHLUMBERGER NITROGEN PUMPERS, RIG UP NITROGEN UNIT AND PRESSURE TEST SAME, PUMPED NITROGEN THRU COIL AT 1500 PSI FOR 15 MINS. 22:30 - 00:00 1.50 WHSUR P OTHCMP GET OFF OF WELL,GREASE TREE WITH GREASE CREW,SET TOOLS ON RIG FLOOR TO SET BPV. PRESSURE TEST LUBRICATOR TO 250 PSI LOW AND 3500 PSI HIGH FOR FIVE MIN EACH(PASS). 10/7/2012 00:00 - 02:00 2.00 WHSUR P OTHCMP SET 6-3/8"CAMERON TYPE J BPV. FINAL TUBING PRESSURE=VAC. CLOSE MASTER AND SSV,CONFIRM LEAKTIGHT. RIG DOWN LUBRICATOR VALVE SHOP CREW. Printed 11/15/2012 9:36:24AM • North America-ALASKA- BP • Page 9 of 9 Operation Summary Report Ammo- amasimaiaiiask Common Well Name:S-12A AFE No Event Type:COM-ONSHORE(CON) Start Date:9/30/2012 End Date: 10/7/2012 X3-012HQ-C:DRILL(1,486,371 00) Project:Prudhoe Bay Site: PB S Pad Rig Name/No.:NORDIC 2 Spud Date/Time:9/30/1985 12:00:00AM Rig Release: 10/7/2012 Rig Contractor:NORDIC CALISTA UWI: Active Datum:S-12A @72.97ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:00 - 03:30 1.50 RIGD P OTHCMP RIG DOWN INJECTOR. PULL 2-3/8"COIL ACROSS FROM RIG FLOOR TO REEL HOUSE. 03:30 - 04:00 0.50 WHSUR P OTHCMP PERFORM LEAK TIGHT TESTING THROUGH WING VALVE AGAINST TOP OF SSV AND BOTTOM OF SWAB VALVE TO ESTABLISH DOUBLE BARRIERS FOR BREAKING CONTAINMENT. 04:00 - 05:00 1.00 BOPSUR P OTHCMP OPEN BOP DOORS AND INSPECT COMPONENTS. SECURE COIL AND PREPARE TO LOWER REEL. 05:00 - 06.00 1.00 RIGD P OTHCMP LOWER 2-3/8"REEL#32645 DOWN TO FLAT BED TRUCK AND SHIP OVER TO P PAD FOR USE ON NEXT WELL(REEL REMOVED FROM RIG FOR 100K#WEIGHT SAVINGS DURING RIG MOVE). 06:00 - 10:00 4.00 BOPSUR ( P POST ND BOPS. NU TREE CAP. LEAK TIGHT TEST SAME THROUGH WING VALVE. TEST PASSED. CONTINUE TO CLEAN PITS AND PUMP LINES WITH VAC TRUCK. LOAD TRAILERS WITH EQUIPMENT FOR TRANSPORT. 10:00 - 12:00 2.00 BOPSUR P POST GENERAL RIG DOWN OPERATIONS IN PREPARATION FOR RIG MOVE. RELEASE NORDIC 2 CTD RIG AND END COMPLETION EVENT AT 12:00 ON 10/7/2012. -ALL TREE AND WELLHEAD VALVES LEFT CLOSED TO PRESSURE GAUGES. -FINAL IA/OA=0/0 PSI -TREE/WELLHEAD AND CELLAR CLEAN WELLWORK TRANSFER PERMIT CLOSED OUT WITH PAD OPERATOR. -WELL HANDOVER COMPLETED WITH WELLS GROUP(NOTE LINER TOP PACKER MUST BE SET POST RIG AND PERF GUN ASSEMBLY LEFT IN HOLE AS FISH.TOP AT 11661'MD). 20.17 DAYS FROM RIG ACCEPT TO RIG RELEASE ORIGINAL PERFORMANCE TARGET= 17.48 DAYS ORIGINAL AFE P50 TARGET=21.3 DAYS Printed 11/15/2012 9:36.24AM S-12B, Well History (Post Rig Sidetrack) } Date Summary 10/11/12 T/I/0= 0/0/0 Conducted PJSM w/crew; Barriers=MV, SSV,WV& Lateral; Start barrier list; Performed safe-out/walk down w/operator; P.T. down on MV, SSV&WV independently to 500 psi for 5 min. each (passed); Installed Nutron Valve and Needle valve on Companion blind; P.T. (charted)Tree against 6" CIW"J"TWC to 300 psi/5000 psi for 5 min. each (passed), charted tests downloaded into U-drive TRP folder. 10/12/12 T/I/0=0/0/0 Conduct PJSM. Barriers=MV&SSV. Verified by applying 500 psi against SSV through tree cap. LTT Passed. R/U CIW Lubricator 68-840 with pulling tool and test against SSV to 300 and 3500 psi for 5 min. LTT Passed; Pull 6-3/8" CIW"J"TWC#424 through tree for Nordic 2 Post-CTD Torque&Test. 10/15/12 DRIFT W/2.21"CENTRALIZER TO DEVIATION @ 10,009' SLM (no sample). PREFORM SBHPS AS PER PROGRAM. (GOOD DATA). DRIFT W/4.50"x96"OAL DMY LTP&TAG LNR TOP @ 9250'SLM. SET 5-1/2"WFD ER PKR W/BAKER SEAL ASSEMBLY IN 3-1/2" LINER @ 9249' SLM. 10/16/12 SET CSV LTTP IN ER LTP @ 9240' SLM. LRS MIT-T TO 2500 PSI FAILED. LRS MIT-IA TO 2500 PSI PASSED. PULLED CSV LTTP FROM 9240'SLM. LRS PUMPED 20 BBLS @ .5 BPM. RUSHED& FLUSHED LTP W/4-1/2" BRUSH @ 9241'SLM. SET 5 1/2"CSV LTTP IN ER LTP @ 9240' SLM. MIT-T TO 2500 PSI FAILED, ESTABLISHED LLR OF 0.11 BPM @ 3000 PSI. 10/16/12 #1 MIT-T**FAILED**to 2500 psi. MIT IA**PASSED**to 2500 psi Pumped 11 bbls to reach test pressure • lost 579 and 507 psi rig up to IA. Pumped a total of 10.2 bbls of crude down IA to reach test pressures. IA test 1 to 2000 psi passed. 15 min lost 90 psi/30 min lost 35 psi.As per SSL PE/MIT IA to 3000 psi. Failed 5 attempts. (see log) Bled back IAP to 124 psi/Bled back 7.7 bbls. Pumped 7 bbls crude into IA to reach test pressure. 15 min IA lost 80 psi. 30 min IA lost 30 psi.Total loss of 110 psi in 30 mins. Bleed IAP back to 300 psi. Bled back 6 bbls.#2 MIT T**FAILED**to 2500 psi. Pumped 5.5 bbls down tbg to reach test pressure. 15 min T lost 852 psi. 30 min T lost 643 psi. Bled TP back to 8 psi. Bled back 1.7 bbls. SSL to RIH and pull plug.MIT TBG to 2500 psi FAILED 3 times(see MIT darta) Established LLR of .11 bpm down tbg rig up to IA MIT IA to 3000 lost 127 psi in first 15 final results of test on AWGRS 10-17- 12. 10/17/12 MIT-IA to 3000 PASSED lost 127 in first 15 and 56 in second 15 bleeed IA to 300 rig down (slickline on well has control annulus valves open to gauges) FWHP=30/292/38. 10/17/12 LRS MIT-IA TO 3000 PSI PASSED. ******CAT STANDING VALVE LTTP LEFT IN HOLE @ 9240'SLM (5- 1/2"'G' FN , 54"OAL)******. 10/18/12 SET 5-1/2"WHIDDON C-SUB ON CSV @ 9240'SLM. PULLED RM-DGLV FROM ST#1 @ 9010' SLM/MD. 10/19/12 PULLED RM-DGLV FROM ST#4 @ 7210' MD. PULLED RM-DGLV FROM ST#5 @ 5512'MD . PULLED RM-DGLV FROM ST#6 @ 3204' MD. SET RM-LGLV IN ST#6. SET RM-LGLV IN ST#5. SET RM-LGLV IN ST#4. SET RM-OGLV IN ST# 1 @ 9010'MD. PULL 5-1/2"WHIDDON CATCHER FROM 9240'SLM. ATTEMPT TO PULL 5-1/2" LTTP FROM 9245'SLM. BAIL 3/4 GAL OF PLASTIC&METAL SHAVINGS FROM LTTP @ 9245' SLM. PULL 5-1/2" LTTP FROM 9245'SLM. Page 1 of 1 BAKER HUGHES INTEQ North America - ALASKA - BP Prudhoe Bay PB S Pad S-12A S-12B Survey: MWD Survey Report - Geographic 14 November, 2012 wi0041 Mill BAKER HUGHES Survey Report-Geographic 0 lop INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well S-12A Project: Prudhoe Bay TVD Reference: S-12A @ 72.97ft(generic drilling rig) Site: PB S Pad MD Reference: S-12A @ 72.97ft(generic drilling rig) Well: S-12A North Reference: True Wellbore: S-12B Survey Calculation Method: Minimum Curvature Design: S-12B 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 PBS Pad,TR-12-12 1 Site Position: Northing: 5,980,854.54ft Latitude: 70°21'23.002 N From: Map Easting: 617,919.92ft Longitude: 149°2'32.34 W Position Uncertainty: 0.00 ft Slot Radius: 0.000in Grid Convergence: 0.90 ° Well S-12A API No 500292141900 Well Position +NI-S 0.00 ft Northing: 5,979,854.00 ft Latitude: 70°21'12.819 N +E/-W 0.00 ft Easting: 620,117.00 ft Longitude: 149°1'28.59 W Position Uncertainty 0.00 ft Wellhead Elevation: 36.72 ft Ground Level: 35.47ft Wellbore S-12B API No 500292141901 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (0) (°) (nT) BGGM2012 9/20/2012 20.66 81.02 57,628 Design S-12B Audit Notes: Version: Phase: ACTUAL Tie On Depth: 9,817.97 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (0) 37.50 0.00 0.00 136.87 Survey Program Date: 11/14/2012 From To (ft) (ft) Survey(Wellbore) Tool Name Description 107.87 2,707.27 1 :Sperry-Sun BOSS gyro multi(S-12A) BOSS-GYRO Sperry-Sun BOSS gyro multishot 2,801.77 9,817.97 2:Schlumberger GCT multishot(S-12A) GCT-MS Schlumberger GCT multishot 9,830.50 12,776.00 MWD(S-12B) MWD MWD-Standard 11/14/2012 10:55:19AM Page 2 COMPASS 2003.16 Build 73 NM BAKER HUGHES Survey Report-Geographic 0 bp INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well S-12A Project: Prudhoe Bay TVD Reference: S-12A @ 72.97ft(generic drilling rig) Site: PB S Pad MD Reference: S-12A @ 72.97ft(generic drilling rig) Well: S-12A North Reference: True Wellbore: S-12B Survey Calculation Method: Minimum Curvature Design: S-12B Database: EDM.16-ANC Prod-WH24P Survey �.. Measured Vertical Map Map Depth Inclination Azimuth Depth +NI-S +El-W Northing Easting (ft) (0) (0) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 9,817.97 33.62 160.58 8,750.26 -2,858.89 2,040.87 5,977,028.44 622,203.27 70°20'44.700 N 149°0'28.96 W TIP 9,830.50 33.36 160.61 8,760.71 -2,865.41 2,043.17 5,977,021.95 622,205.68 70°20'44.636 N 149°0'28.89 W KOP 9,855.42 37.19 157.15 8,781.05 -2,878.82 2,048.37 5,977,008.63 622,211.09 70°20'44.504 N 149°0'28.74 W 9,885.05 49.32 154.03 8,802.59 -2,897.24 2,056.80 5,976,990.35 622,219.82 70°20'44.323 N 149°0'28.49 W 9,906.40 57.00 152.58 8,815.39 -2,912.49 2,064.48 5,976,975.22 622,227.74 70°20'44.173 N 149°0'28.27 W 9,939.42 64.89 144.25 8,831.43 -2,936.98 2,079.64 5,976,950.98 622,243.28 70°20'43.932 N 149°0'27.82 W 9,969.40 72.37 136.30 8,842.36 -2,958.39 2,097.49 5,976,929.86 622,261.47 70°20'43.721 N 149°0'27.30 W', 10,000.22 83.85 132.00 8,848.70 -2,979.34 2,119.10 5,976,909.27 622,283.42 70°20'43.515 N 149°0'26.67 W 10,030.11 90.31 133.82 8,850.23 -2,999.65 2,140.95 5,976,889.31 622,305.59 70°20'43.315 N 149°0'26.03 W 10,060.18 96.15 137.20 8,848.53 -3,021.05 2,161.98 5,976,868.25 622,326.96 70°20'43.105 N 149°0'25.42 W 10,089.85 96.18 142.76 8,845.34 -3,043.64 2,180.94 5,976,845.97 622,346.28 70°20'42.882 N 149°0'24.87 W 10,120.24 94.00 148.47 8,842.65 -3,068.61 2,198.03 5,976,821.28 622,363.76 70°20'42.637 N 149°0'24.37 W 10,150.48 92.52 154.17 8,840.92 -3,095.08 2,212.51 5,976,795.04 622,378.66 70°20'42.376 N 149°0'23.94 W 10,183.36 92.67 159.92 8,839.43 -3,125.31 2,225.31 5,976,765.02 622,391.95 70°20'42.079 N 149°0'23.57 W 10,210.60 93.72 165.32 8,837.92 -3,151.26 2,233.44 5,976,739.21 622,400.48 70°20'41.824 N 149°0'23.33 W 10,240.48 94.80 170.15 8,835.69 -3,180.37 2,239.76 5,976,710.21 622,407.28 70°20'41.538 N 149°0'23.15 W 10,270.62 94.43 173.92 8,833.27 -3,210.12 2,243.93 5,976,680.54 622,411.92 70°20'41.245 N 149°0'23.03 W 10,301.08 94.15 178.32 8,830.99 -3,240.41 2,245.98 5,976,650.28 622,414.46 70°20'40.947 N 149°0'22.97 W 10,330.28 93.23 182.61 8,829.11 -3,269.54 2,245.74 5,976,621.15 622,414.69 70°20'40.661 N 149°0'22.97 W 10,360.46 92.92 186.64 8,827.49 -3,299.58 2,243.31 5,976,591.09 622,412.74 70°20'40.365 N 149°0'23.05 W 10,390.46 94.15 188.82 8,825.64 -3,329.24 2,239.29 5,976,561.36 622,409.19 70°20'40.073 N 149°0'23.16 W 10,420.51 96.96 184.97 8,822.73 -3,358.93 2,235.70 5,976,531.62 622,406.07 70°20'39.781 N 149°0'23.27 W 10,450.37 95.88 181.73 8,819.39 -3,388.55 2,233.96 5,976,501.99 622,404.81 70°20'39.490 N 149°0'23.32 W 10,481.59 93.69 179.74 8,816.79 -3,419.65 2,233.56 5,976,470.88 622,404.91 70°20'39.184 N 149°0'23.33 W 10,510.11 92.21 177.14 8,815.32 -3,448.12 2,234.34 5,976,442.43 622,406.15 70°20'38.904 N 149°0'23.31 W 10,540.32 91.87 174.22 8,814.24 -3,478.22 2,236.61 5,976,412.37 622,408.90 70°20'38.608 N 149°0'23.24 W 10,570.24 92.21 170.63 8,813.18 -3,507.86 2,240.56 5,976,382.81 622,413.32 70°20'38.317 N 149°0'23.13 W 10,600.32 92.33 167.24 8,811.98 -3,537.35 2,246.32 5,976,353.41 622,419.56 70°20'38.027 N 149°0'22.96 W 10,630.27 95.07 163.05 8,810.05 -3,566.23 2,253.98 5,976,324.66 622,427.68 70°20'37.743 N 149°0'22.74 W 10,660.24 94.73 159.56 8,807.49 -3,594.51 2,263.55 5,976,296.54 622,437.70 70°20'37.464 N 149°0'22.46 W 10,690.22 95.50 156.57 8,804.82 -3,622.21 2,274.70 5,976,269.03 622,449.29 70°20'37.192 N 149°0'22.13 W 10,720.06 93.57 153.54 8,802.46 -3,649.17 2,287.25 5,976,242.27 622,462.27 70°20'36.927 N 149°0'21.77 W 10,750.36 92.83 151.18 8,800.77 -3,675.97 2,301.28 5,976,215.70 622,476.73 70°20'36.663 N 149°0'21.36 W 10,780.05 93.35 148.70 8,799.16 -3,701.63 2,316.13 5,976,190.29 622,491.98 70°20'36.411 N 149°0'20.92 W 10,810.54 90.98 146.44 8,798.01 -3,727.34 2,332.47 5,976,164.84 622,508.73 70°20'36.158 N 149°0'20.44 W 10,840.22 94.89 145.46 8,796.49 -3,751.90 2,349.06 5,976,140.56 622,525.71 70°20'35.916 N 149°0'19.96 W 10,870.30 93.97 143.57 8,794.17 -3,776.31 2,366.47 5,976,116.42 622,543.51 70°20'35.676 N 149°0'19.45 W 10,900.32 92.70 141.28 8,792.42 -3,800.06 2,384.74 5,976,092.97 622,562.16 70°20'35.442 N 149°0'18.92 W 10,930.42 92.03 138.43 8,791.18 -3,823.05 2,404.13 5,976,070.30 622,581.91 70°20'35.216 N 149°0'18.35 W 10,960.36 92.82 135.73 8,789.91 -3,844.95 2,424.50 5,976,048.73 622,602.63 70°20'35.001 N 149°0'17.76 W 10,990.24 92.86 132.97 8,788.43 -3,865.81 2,445.84 5,976,028.22 622,624.29 70°20'34.796 N 149°0'17.13 W 11,020.28 91.87 131.31 8,787.19 -3,885.95 2,468.09 5,976,008.44 622,646.87 70°20'34.598 N 149°0'16.48 W 11,050.37 92.49 128.40 8,786.05 -3,905.22 2,491.17 5,975,989.55 622,670.25 70°20'34.408 N 149°0'15.81 W 11,080.56 90.98 125.62 8,785.13 -3,923.38 2,515.27 5,975,971.78 622,694.63 70°20'34.229 N 149°0'15.11 W 11,110.49 90.95 123.15 8,784.63 -3,940.28 2,539.96 5,975,955.28 622,719.59 70°20'34.063 N 149°0'14.39 W 11,140.42 92.30 120.94 8,783.78 -3,956.15 2,565.32 5,975,939.81 622,745.20 70°20'33.907 N 149°0'13.64 W 11,170.20 92.95 119.00 8,782.42 -3,971.01 2,591.09 5,975,925.37 622,771.20 70°20'33.761 N 149°0'12.89 W 11,200.39 91.54 117.01 8,781.23 -3,985.18 2,617.72 5,975,911.64 622,798.05 70°20'33.621 N 149°0'12.11 W 11,230.34 90.34 114.75 8,780.74 -3,998.25 2,644.66 5,975,899.00 622,825.20 70°20'33.493 N 149°0'11.33 W 11,260.34 90.52 113.00 8,780.52 -4,010.39 2,672.09 5,975,887.30 622,852.82 70°20'33.373 N 149°0'10.53 W 11,290.42 91.26 110.52 8,780.05 -4,021.54 2,700.02 5,975,876.60 622,880.92 70°20'33.263 N 149°0'9.71 W 11,320.30 90.86 107.80 8,779.50 -4,031.34 2,728.24 5,975,867.25 622,909.29 70°20'33.167 N 149°0'8.89 W 11,350.30 90.55 106.28 8,779.13 -4,040.13 2,756.92 5,975,858.92 622,938.11 70°20'33.080 N 149°0'8.05 W 11/14/2012 10:55:19AM Page 3 COMPASS 2003.16 Build 73 1031111 •.. BAKER HUGHES Survey Report-Geographic by INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well S-12A Project: Prudhoe Bay TVD Reference: S-12A @ 72.97ft(generic drilling rig) Site: PB S Pad MD Reference: S-12A @ 72.97ft(generic drilling rig) Well: S-12A North Reference: True Wellbore: S-12B Survey Calculation Method: Minimum Curvature Design: S-12B Database: EDM.16-ANC Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +Nf-S +EI-W Northing Easting (ft) (1 (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 11,380.22 90.98 102.83 8,778.73 -4,047.65 2,785.87 5,975,851.87 622,967.17 70°20'33.006 N 149°0'7.20 W 11,411.34 91.35 101.00 8,778.10 -4,054.07 2,816.31 5,975,845.94 622,997.71 70°20'32.943 N 149°0'6.31 W 11,440.48 90.89 98.48 8,777.53 -4,059.00 2,845.03 5,975,841.47 623,026.50 70°20'32.894 N 149°0'5.47 W 11,470.27 91.20 96.24 8,776.98 -4,062.81 2,874.56 5,975,838.13 623,056.09 70°20'32.857 N 149°0'4.61 W 11,500.43 91.78 94.13 8,776.20 -4,065.54 2,904.59 5,975,835.89 623,086.15 70°20'32.830 N 149°0'3.73 W 11,530.60 91.17 92.42 8,775.42 -4,067.26 2,934.70 5,975,834.65 623,116.28 70°20'32.813 N 149°0'2.85 W 11,560.01 90.55 90.09 8,774.98 -4,067.91 2,964.10 5,975,834.47 623,145.68 70°20'32.806 N 149°0'2.00 W 11,590.10 90.03 86.14 8,774.83 -4,066.92 2,994.16 5,975,835.95 623,175.73 70°20'32.816 N 149°0'1.12 W 11,620.34 90.86 84.04 8,774.59 -4,064.33 3,024.29 5,975,839.02 623,205.81 70°20'32.841 N 149°0'0.24 W 11,651.16 91.97 82.24 8,773.83 -4,060.65 3,054.88 5,975,843.19 623,236.33 70°20'32.877 N 148°59'59.34 W 11,680.36 91.50 80.03 8,772.95 -4,056.15 3,083.71 5,975,848.14 623,265.09 70°20'32.921 N 148°59'58.50 W 11,710.12 91.32 78.47 8,772.22 -4,050.60 3,112.94 5,975,854.16 623,294.22 70°20'32.976 N 148°59'57.65 W 11,740.61 90.06 82.02 8,771.85 -4,045.44 3,142.98 5,975,859.81 623,324.17 70°20'33.027 N 148°59'56.77 W 11,770.50 90.31 85.54 8,771.75 -4,042.20 3,172.69 5,975,863.52 623,353.82 70°20'33.058 N 148°59'55.90 W 11,800.30 90.86 89.09 8,771.45 -4,040.80 3,202.45 5,975,865.39 623,383.56 70°20'33.072 N 148°59'55.03 W 11,830.43 91.54 92.79 8,770.82 -4,041.30 3,232.57 5,975,865.38 623,413.67 70°20'33.067 N 148°59'54.15 W 11,860.45 90.12 96.09 8,770.38 -4,043.62 3,262.49 5,975,863.54 623,443.62 70°20'33.044 N 148°59'53.28 W 11,890.54 89.94 99.15 8,770.37 -4,047.61 3,292.31 5,975,860.03 623,473.50 70°20'33.005 N 148°59'52.41 W 11,920.37 89.11 102.30 8,770.61 -4,053.16 3,321.61 5,975,854.95 623,502.89 70°20'32.950 N 148°59'51.55 W 11,950.70 89.23 106.61 8,771.05 -4,060.73 3,350.97 5,975,847.85 623,532.36 70°20'32.875 N 148°59'50.69 W 11,980.80 89.97 110.86 8,771.26 -4,070.39 3,379.47 5,975,838.65 623,561.01 70°20'32.780 N 148°59'49.86 W 12,011.54 89.20 114.82 8,771.49 -4,082.32 3,407.79 5,975,827.17 623,589.52 70°20'32.663 N 148°59'49.03 W 12,040.61 89.20 118.74 8,771.89 -4,095.42 3,433.74 5,975,814.50 623,615.67 70°20'32.534 N 148°59'48.28 W 12,072.43 88.31 123.12 8,772.58 -4,111.76 3,461.02 5,975,798.59 623,643.21 70°20'32.373 N 148°59'47.48 W 12,100.33 86.93 127.20 8,773.74 -4,127.81 3,483.81 5,975,782.91 623,666.24 70°20'32.215 N 148°59'46.81 W 12,125.74 85.92 129.66 8,775.33 -4,143.57 3,503.67 5,975,767.47 623,686.36 70°20'32.060 N 148°59'46.23 W 12,150.18 86.44 130.26 8,776.96 -4,159.24 3,522.36 5,975,752.11 623,705.29 70°20'31.906 N 148°59'45.69 W 12,180.57 86.56 128.71 8,778.81 -4,178.52 3,545.77 5,975,733.20 623,729.01 70°20'31.716 N 148°59'45.00 W 12,210.64 86.81 126.57 8,780.55 -4,196.86 3,569.54 5,975,715.26 623,753.07 70°20'31.535 N 148°59'44.31 W 12,240.07 88.10 126.10 8,781.86 -4,214.28 3,593.23 5,975,698.22 623,777.03 70°20'31.364 N 148°59'43.62 W 12,270.90 88.40 124.63 8,782.80 -4,232.11 3,618.35 5,975,680.79 623,802.44 70°20'31.189 N 148°59'42.89 W 12,300.64 89.82 124.06 8,783.26 -4,248.89 3,642.91 5,975,664.41 623,827.25 70°20'31.023 N 148°59'42.17 W 12,330.26 89.14 122.31 8,783.53 -4,265.10 3,667.69 5,975,648.60 623,852.29 70°20'30.864 N 148°59'41.44 W 12,361.34 89.02 120.42 8,784.03 -4,281.27 3,694.23 5,975,632.86 623,879.08 70°20'30.705 N 148°59'40.67 W 12,390.26 87.67 118.38 8,784.86 -4,295.46 3,719.41 5,975,619.08 623,904.48 70°20'30.565 N 148°59'39.93 W 12,420.96 87.30 117.71 8,786.21 -4,309.88 3,746.48 5,975,605.09 623,931.78 70°20'30.423 N 148°59'39.14 W 12,451.62 87.45 115.30 8,787.62 -4,323.55 3,773.89 5,975,591.87 623,959.40 70°20'30.288 N 148°59'38.34 W 12,471.12 87.67 114.33 8,788.45 -4,331.73 3,791.57 5,975,583.98 623,977.21 70°20'30.208 N 148°59'37.83 W 12,500.80 92.76 112.09 8,788.33 -4,343.42 3,818.84 5,975,572.72 624,004.66 70°20'30.093 N 148°59'37.03 W 12,521.09 95.07 109.17 8,786.95 -4,350.55 3,837.78 5,975,565.90 624,023.71 70°20'30.023 N 148°59'36.48 W 12,550.86 95.23 103.25 8,784.27 -4,358.82 3,866.23 5,975,558.08 624,052.29 70°20'29.941 N 148°59'35.65 W 12,580.87 94.48 99.38 8,781.73 -4,364.69 3,895.55 5,975,552.69 624,081.70 70°20'29.883 N 148°59'34.79 W 12,610.66 90.64 95.80 8,780.40 -4,368.62 3,925.04 5,975,549.23 624,111.24 70°20'29.844 N 148°59'33.93 W 12,640.74 91.04 91.56 8,779.96 -4,370.55 3,955.05 5,975,547.78 624,141.28 70°20'29.825 N 148°59'33.05 W 12,671.04 94.98 87.61 8,778.37 -4,370.33 3,985.29 5,975,548.49 624,171.51 70°20'29.827 N 148°59'32.17 W 12,700.74 94.61 82.15 8,775.89 -4,367.69 4,014.76 5,975,551.60 624,200.93 70°20'29.853 N 148°59'31.31 W 12,776.00 94.61 82.15 8,769.84 -4,357.44 4,089.07 5,975,563.03 624,275.06 70°20'29.954 N 148°59'29.14 W TD-PRODUCTION LINER 1 11/14/2012 10:55:19AM Page 4 COMPASS 2003.16 Build 73 Letter of Transmittal EMI Date: n C wG D BAKER October 2, 2012 O C t 12 2012 HUGHES To: From: State of Alaska AOGCC Baker Hughes INTEQ 333 W. 7th Ave., Suite 100 795 East 94th Avenue Anchorage, Alaska 99501 Anchorage, Alaska 99515 Bill Michaelson Please find enclosed the directional survey data for the following well(s): C-09BPB 1 C-09B ( - 0 Le0 ! C-03CPB 1 C-03C a —0.6 C-24BPB1 C-24B 1 l4-, B-27B 13 07-22A a2_,1 ;L S-37APB1 S-37A - 4 ?\ 0 © i91 S-32A F �_S-12B Enclosed for each well(s): 2 hardcopy prints of directional survey reports 1 compact disk containing electronic survey files Please sign and return one copy of this transmittal form to: BP Exploration (Alaska) Inc. Petrotechnical Data Center, LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 to acknowledge receipt of this data. .. RECEIVED BY: , State of Alaska AOGCC DATE: siiitarE SEAN PARNELL,GOVERNOR 0 ALASKA OIL A1VI) 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 S-12B BP Exploration (Alaska), Inc. Permit No: 212-111 Surface Location: 1648' FNL, 1955' FWL, SEC. 35, T12N, R12E, UM Bottomhole Location: 719' FNL, 1170' FWL, SEC. 01, T11N, R12E, 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, Cathy IA. Foerster Chair f DATED this /5 day of August, 2012. 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 RECEIVED ALAS— ,OIL AND GAS CONSERVATION COMMI—AON AUG 0 3 2012 PERMIT TO DRILL 20 AAC 25.005 9QCC 1 a.Type of work: • 1 b.Proposed Well Class: ®Development Oil • 0 Service-Winj ®Single Zone • 1 c. Specify i we I is proposed for: ❑Drill ®Redrill 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone 0 Coalbed Gas 0 Gas Hydrates ❑Re-Entry 0 Exploratory 0 Service-WAG 0 Service-Disp 0 Shale Gas 2. Operator Name: 5. Bond: ®Blanket 0 Single Well 11. Well Name and Number: BP Exploration(Alaska) Inc. Bond No. 6194193' PBU S-12B 3. Address: 6. Proposed Depth: 12. Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 13157' • TVD 8745'ss . Prudhoe Bay/Prudhoe Bay 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Surface: ADL 028257-&028260 1648'FNL, 1955' FWL, Sec. 35,T12N, R12E, UM - Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 764'FSL, 3995' FWL, Sec.35,T12N, R12E, UM September 7,2012 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 719' FNL, 1170' FWL, Sec. 01,T11N, R12E, UM 2560 13000' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: feet 15.Distance to Nearest Well Open Surface: x- 620117 • y-5979854 • Zone- ASP4 GL Elevation above MSL: 35.47' feet to Same Pool: 370' 16.Deviated Wells: Kickoff Depth: 9832' • feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 95 degrees Downhole: 3290 - Surface: 2419 • 18. Casing Program: Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 4-1/8" 3-3/16"x 6.6#/ L-80/ TC-II/ 3892' 9265' 8226'ss 13157' 8745'ss 174 sx Class'G' 2-7/8" 6.4# 13Cr80 STL 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 TVD(ft): Junk(measured): 10380' 9227' None 10338' 9191' None Casing Length Size Cement Volume MD c TVD Conductor/Structural 110' 20"x 30" 8 cu yds Concrete 110' 110' Surface 2699' 13-3/8" 2720 cu ft Permafrost&Permafrost E 2699' 2699' Intermediate 9662' 9-5/8" 1822 cu ft Class'G',230 cu ft Class'G' 9662' 8622' Production Liner 964' 7" 300 cu ft Class'G' 9416'- 10380' 8420'-9227' Perforation Depth MD(ft): 9836'-9876' Perforation Depth TVD(ft): 8765'-8799' 20.Attachments: 0 Property Plat ®BOP Sketch ®Drilling Program 0 Time vs Depth Plot 0 Shallow Hazard Analysis ®Diverter Sketch 0 Seabed Report ®Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the fore.oing is true and correct. Contact Zach Sayers,564-5790 Printed Name John Iiii ,ii'' / Title Engineering Team Leader Prepared By Name/Number Signature /' Phone 564-4711 Date eVs42 Joe Lastufka,564-4091 Commission Use Only Permit To D' API Number: Permit Ap royal Date: See cover letter for Number: 2-I .Z 1 ' 1 50-029-21419-01-00 \\\i tZ other requirements Conditions of Approval: If box is checked,well may nottbbe used to explore for,test,or produce coalbe ethane,gas hydrates,or gas contained shales: 12( Other: .yr 3 s 6 p 4, P � ;: t Samples Req'd: 0 Yes [g4 o Mud Log Req'd: 0 Yes IINo H2S Measures: es ❑No Directional Survey Req'd: IllYes 0 No p 5 APPROVED BY THE COMMISSION Date 7� 4 --I L- ,COMMISSIONER Form 10-401 Revised 07/2009 This permit is valid for 24 months from the date of appro al(20 AAC 25.005(g)) Submit In Duplicate V l,/ ft— g-Pi'I� ORIGINAL Jr` To: Alaska Oil & Gas Conservation Commission From: Zach Sayers bp CTD Engineer Date: August 2, 2012 Re: S-12B Permit to Drill Request Approval is requested for a permit to drill a CTD sidetrack from well S-12A CTD Drill and Complete S-12B program: Rig Start Date: September 7th, 2012 Pre-Rig Work: (scheduled to begin Aug 15th, 2012) 1. F MIT- IA to 3,000 psi, MIT-OA to 2,000 psi 2. W Cycle LDS; PPPOT- T to 5,000 psi 3. S Dummy WS Drift to 10,000'MD (33° Inc) 4. F Load and Kill well with 1% KCI 5. E Set 4-1/2" x 7" TT Whipstock at —9,832' MD using CCL to locate mid joint 6. V PT MV, SV, WV 7. 0 Bleed wellhead, production, flow, and GL lines down to zero and blind flange k 8. 0 Remove wellhouse, level pad Rig Work: (scheduled to begin on September 7th, 2012) 1. MIRU and test BOPE to 250 psi low and 3,500 psi high. 2. Mill 3.8" window at 9,832' and 10' of rathole. Swap the well to PowerVis. 3 Drill Build: 4 125" OH, 150' (37 deg/100 planned) with resistivity 4. Drill Lateral: 4.125" OH, 3012' (12 deg/100 planned) with resistivity 5. Run 3-3/16" x 2-7/8" solid liner leaving TOL at —9,265' MD 6. Pump primary cement leaving TOC at 9,720', 36 bbls of 15.8 ppg liner cmt planned 7. Cleanout liner and MCNL/GR/CCL log 8. Test liner lap to 2,400 psi. 10c -`(274 ,wA (prceit- Zo►.- �- is��° 'QJ 9. Perforate liner per asset instructions (-800') 10. Freeze protect well, RDMO Post-Rig Work: 1. Re-install wellhouse and FL's. 2. Generic GLV's Mud Program: • Well kill: 8.4 ppg brine. • Milling/drilling: 8.6 ppg PowerVis for milling window and drilling (607 psi over-balance). Disposal: • All drilling and completion fluids and all other Class II wastes will go to Grind & Inject. • All Class I wastes will go to Pad 3 for disposal. . Hole Size: 4.125" From 9,832' MD to 13,157' MD Liner Program: • 3-3/16", 6.6 lb/ft, L-80, TC-Il Solid liner 9,265' MD — 10,100' MD. • 2-7/8", 6.4 lb/ft, CR-80, STL Solid Liner 10,100' MD — 13,157' MD. • A minimum of 36 bbls of 15.8 ppg cement will be used for liner cementing. (TOC —9,720' MD) • The primary barrier for this operation: a minimum EMW of 8.4 ppg. • A X-over shall be made up to a safety joint including a TIW valve for all tubulars ran in hole. Well Control: • BOP diagram is attached. • Pipe rams, blind rams and the CT pack off will be pressure tested to 250 psi and to 3,500 psi. • The annular preventer will be tested to 250 psi and 3,500 psi. Directional • See attached directional plan. Maximum planned hole angle is 94.95°. - • Magnetic and inclination surveys will be taken every 30 ft. No gyro will be run. - • Distance to nearest property— 13,000'. - • Distance to nearest well within pool — 370' from S-13. Logging • MWD directional, Gamma Ray and Resistivity will be run over all of the open hole section. - • Cased hole GR/CCL/MCNL logs will be run. Perforating: • SWS 2", 6 spf, perf guns, 1-W CSH work string, & 2-3/8" PH6 • The primary barrier for this operation: a minimum EMW of 8.4 ppg. • A X-over shall be made up to a safety joint including a TIW valve for all tubulars ran in hole. Anti-Collision Failures • S- , 1 323.88' (ctr— ctr distance) Fails at 11,600' MD. Status: Parent Wellbore, shut in. Hazards • S-Pad is considered an H2S pad. Well S-201 had 3200 ppm H2S on 2/06/2011. - • Most recent H2S level on S-12A is 36 ppm recorded on 2/27/2012. • The lost circulation risk in S-12B is considered to be medium to high and 2 fault crossings are - planned. Reservoir Pressure • The reservoir pressure on S-12B is expected to be 3,290 psi at 8,715 TVDSS. (7.26 ppg equivalent). • Maximum expected surface pressure with gas (0.10 psi/ft) to surface is 2,419 psi. - • An EMW of 8.4 ppg for this well will provide 517 psi over-balance to the reservoir. Zach Sayers CC: Well File CTD Engineer Sondra Stewman /Joseph Lastufka TREE= 6"Mc EV OY WELLHEAD= McEVOY S 12A SAFE )TES: DUE TO INSUFFICIENT OIL COLUMN S- ACTUATOR= OTIS 12 WAS P&A'D ON 09/27/84.S-12A WAS DRILLED 20'SE KB.ELEV= 72.97' BF.ELEV= 36.72' KOP= 3209' Max Angle 38 @ 5206' 2018' —5-1/2"RQM SSSV LAND NIP,ID=4.562" Datum MD= 9964' Datum TVD= 8800'SS 13-3/8"CSG,72#,L-80,ID=12.347" -- 2699' GAS LIFT MANDRELS 'ST MD TVD DEV TYPE VLV LATCH PORT DATE 6 3204 3129 10 OTIS LBD DOME RA 16 09/28/96 5 5512 5115 38 OTIS LBD DOME RA 16 09/28/96 Minimum ID = 4.455" @ 9285' 4 7210 6513 31 OTIS LBD DOME RA 16 09/28/96 5-1/2" OTIS XN NIPPLE 3 8157 7321 34 OTIS LBD DMY RA 0 09/28/96 2 8703 7766 35 OTIS LBD DMY RA 0 09/28/96 1 9010 8018 35 OTIS LBD SO RM 24 09/18/07 I I 9118' —15-1/2"OTIS XA SLIDING SLEEVE,ID=4.562" 9178' —TIW SBR TBG SEAL ASSY 9193' —19-5/8"X5-1/2"TM/HBBP PKR,ID=4.750" 9246' —15-1/2"OTIS X NIP, ID=4.562" ' t 9285' —5-1/2"OTIS XN NIP, ID=4.455" 5-1/2"TBG, 17#, L-80 IPC,.0232 bpf, ID=4.892" —I 9329' / \ � 9330' —15-1/2"TM/WLEG, ID=4.892" 9338' — ELMD TT LOGGED 12/08/86 TOP OF BOT TIEBACK SLEEVE — 9410' 9-5/8"X 7"BOT LNR HGR — 9416' 9-5/8"CSG,47#,L-80, ID=8.681" — 9662' 4 PERFORATION SUMMARY REF LOG:SWS BHCS ON 09/25/85-SWS/CBL ON 09/28/85 ANGLE AT TOP PERF:33 @ 9836' Note:Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" 6 9836-9876 0 07/15/91 4" 4 9836-9858 S 07/12/91 4" 4 9864-9962 S 07/12/91 4" 4 9970- 10032 S 07/12/91 4" 1 10048-10053 S 07/12/91 4" 1 10074-10079 S 07/12/91 PBTD — 10338' .�1�1.0.1.4 0004 7"LNR,26#,L-80,.0383 bpf,ID=6.276" —I 10380' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 09/30/85 ORIGINAL COMPLETION WELL: S-12A 04/09/02 RN/CH/TP CORRECTIONS PERMIT No: 185-1930 04/10/04 JLJ/KAK GLV C/O API No: 50-029-21419-00 10/09/04 LDK/TLP SET BAKER IBP SEC 35,T12N,R12E 1648'SNL&1955'EWL 07/24/06 MO/PJC PULL IBP @ 9710'(11/23/04) 09/30/07 CJN/PJC GLV C/O(09/18/07) BP Exploration(Alaska) TREE= 6"Mc EV OY WELLHEAD= McEVOY S_1 2 B SAFE )TES: DUE TO INSUFFICIENT OIL COLUMN S- ACTUATOR= OTIS 12 WAS P&A'D ON 09/27/84.S-12A WAS DRILLED 20'SE KB.ELEV= 72.97' proposed CTD sidetrack BF.BEV= 36.72' KOP= 3209' Max Angle= 38 @ 5206' 2018' H5-1/2"RQM SSSV LAND NP,ID=4.562" Datum MD= 9964' O Datum TVD= 8800'SS 13-3/8"CSG,72#,L-80,ID=12.347" H 2699' GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 6 3204 3129 10 OTIS LBD DOME RA 16 09/28/96 5 5512 5115 38 OTIS LBD DOME RA 16 09/28/96 Minimum ID = 4.455" @ 9285' 4 7210 6513 31 OTIS LBD DOME RA 16 09/28/96 5-1/2" OTIS XN NIPPLE , I 3 8157 7321 34 OTIS LBD DMY RA 0 09/28/96 L 2 8703 7766 35 OTIS LBD DMY RA 0 09/28/96 Minimum ID = 2.377" @ 10,100' 1 9010 8018 35 OTIS LBD SO RM 24 09/18/07 3-3/16" x 2-7/8" XO 9118' —I5-1/2"OTIS XA SLIDING SLEEVE,ID=4.562" I I f , – 9178' —I INV SBR TBG SEAL ASSY R 9193' —9-5/8"X 5-1/2"TM/HBBP PKR,D=4.750" 9246' H5-1/2"OTIS X NIP,ID=4.562" _Top of 3-1/2"liner at-9,265' 36° '\ 1 9285' —5-1/2"OTIS XN NIP,ID=4.455" 5-1/2"TBG, 17#,L-80 PC,.0232 bpf,D=4.892" H 9329' / 9330' —5-1/2"TIW WLEG,ID=4.892" TOP OF BOT TIEBACK SLEEVE H 9410' II 9-5/8"X 7"BOT LNR HGR —I 9416' ` 9338' — ELMD TT LOGGED 12/08/86 9-5/8"CSG,47#, L-80,ID=8.681" H 9662' , PERFORATION SUMMARY REF LOG:SWS BHCS ON 09/25/85-SWS/CBL ON 09/28/85 ANGLE AT TOP PERF:33 @ 9836' TSGR = 9,672' MD Note:Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" 6 9836-9876 0 07/15/91 • TOO 9,720' MD 4" 4 9836-9858 S 07/12/91 • 4" 4 9864-9962 S 07/12/91 • • 4" 4 9970-10032 S 07/12/91 4" 1 10048- 10053 S 07/12/91 >'' . • 3 bbls 4" 1 10074-10079 S 07/12/91 w. .�• 2-7/8"TD at 13,157' - • . , : • • : . • • • 4-1/2"x 7"TT whipstock at 9,832' • 33° 3-3/16"x 2-7/8"XO at-10,100' FBTD H 10338' 7"LNR,26#,L-80,.0383 bpf,D=6.276" H 10380' k a t a k k a DATE REV BY COMIVENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 09/30/85 ORIGINAL COMPLETION 07/17/12 ZJS Proposed CIU ST VVBL: S-12' 04/09/02 RNVCWTP CORRECTIONS PERMIT No: 04/10/04 JLJ/KAK GLV GO AR No: 50-029-21419-01 10/09/04 LDK/TLP SET BAKER BP SEC 35,T12N,R12E 1648'SNL&1955'EWL 07/24/06 MO/PJC PULL IBP @ 9710'(11/23/04) 09/30/07 CA/PJC GLV GO(09/18/07) BP Exploration(Alaska) . •IIIA• . .. . 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These materials may be found in the original hard file or check the parent folder to view it in digital format. TRANSMITTAL LETTERCHECKLIST WELL NAME l/` — /2_ PTD# �— Development Service Exploratory Stratigraphic Test Non- onventional Well & t/ —FIELD:_ — POOL: Check Box for Appr : 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 produce/inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Non-Conventional Please note the following special condition of this permit: Well production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the Commission to obtain advance approval of such water well testing program. 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