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200-101
STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS v ZLill?I=5 VL:LJ APR 2 5 2019 1. Operations Performed Abandon ❑ Plug Perforations 11Fracture Stimulate ❑ Pull Tubing ❑ Operations sow G C I�- V Suspend ❑ Perforate 0 Other Stimulate ❑ Alter Casing ❑ Change Approved Program ❑ Plug for Redrill ❑ Perforate New Pool ❑ Repair Well ❑ Re-enter Susp Well ❑ Other: ❑ 2. Operator Name: BP Exploration (Alaska), Inc 4. Well Class Before Work Development ® Exploratory ❑ 5. Permit [o Drill Number: 200-101 3. Address: P.O. Box 196612 Anchorage, AK 99519-6612 1 Stratigraphic ❑ Service 1 6. API Number: 50-029-21938-01-00 7. Property Designation (Lease Number): ADL 028262 8. Well Name and Number: PBU Z -21A 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 11145 feet Plugs measured None test We vertical 9141 feet Junk measured None feet Effective Depth: measured 11063 feet Packer measured 10260 feet twe vertical 9067 feet Packer true vertical 8386 feet Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20" 33-113 33-113 Surface 2617 13-3/8" 33-2650 33-2650 4930 2270 Intermediate 9885 9-5/8" 31 -9916 31-8110 6870 4760 Liner 714 7" 9744-10458 7982-8552 7240 5410 Liner 836 4-1/2" 10309 - 11145 8427-9141 8430 7500 Perforation Depth: Measured depth: 10668 -10925 feet True vertical depth: 8730-8945 feet Tubing (size, grade, measured and true vertical depth) 3-1/2" 9.2# 13Cr80 29-10322 8427-9141 Packets and SSSV (type, measured and 4-1/2" Baker SABL-3 Packer 10260 8386 true vertical depth) No SSSV Installed 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: 42 0 882 1690 247 Subsequent to operation: 254 2023 3113 1512 324 14. Attachments (re4ulred r,r,r 20 MC 25.070.25e71. a 25213) 15. Well Class after work: Daily Report of Well Operations ® Exploratory ❑ Development RI Service ❑ Stratigraphic ❑ Copies of Logs and Surveys Run ❑ 16. Well Status after work: Oil ® Gas ❑ WOSPL ❑ Printed and Electronic Fracture Stimulation Data ❑ IGSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUG ❑ 17. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: WA Authorized Name: Peru, Cale Contact Name: Peru, Cale Authorized Title. Petroleum E ineer Contact Email: Cale.Pemftbp.com Authorized Signature: Date: 3 Contact Phone: +1 9075644522 Form 10-404 Revised 04/2017 ,(,0 ` I M.Crit-Lt HYRIJ IBMItFA-4PR 2 6 2019 Submit Original Only of Well =T W/ 2-1/2" X 20' DMY GUNS, 1-3/4" SAMPLE BAILER, TAG TO @ 11,033' SLM. FORATE 10,668'- 10,688' W/ 2.5" MILLENNIUM, 6 SPF, 60 DEG PHASE GUN. LOGS TIED INTO SLB RST DATED 24 -FEB -2009. FELL S/I ON DEPARTURE. DSO NOTIFIED" TREE = 4-1/16"CR5MCJW WELLHEAD= FMC ACTUATOR= BAKER OKB. ELEV = 91.82' BE R = 57.42' KOP= 3100' Max Angle = 53' @ 7400' Datum MD= 10856' Datum TVD= 88W SS 1133/8" CSG, 880, L-80 BTC, D =12.415• I Minimum ID = 2.750" @ 10307' 3-1/2" HES XN NIPPLE TBG, 92#, 9-5/8• X T BKR ZXP LNR TOP PQ7/ HGR WN TIEBACK SLV, D = 6.375' TOPOFBAKERVVHPSTOCK 9916• r TOP OF EZSV BRIDGE PLUG 9937• Z_ w SAFETY NOTES: 3-112" CHROM E TBQ 4-12" 1 CHROME LNR PERFORATION SUMMARY REF LOG: SCH PDCL 1211 LW 8 RST -SIGMA ON 0224,09 ANGLE AT TOP PERF: 34'Q 10698' Note: Rebrb Plodue9on DB br hisbni 1perfdata SIZE SPF INTERVALSHOT I TYPE VLV SOZ 2-12' 6 10668 -10686 O 04/18/19 14 2- 6 10698 -10716 O 0620/16 5 2" 6 10725 -10756 O 0820/16 RK 2- 6 10744 -10752 O 0325/15 47 2" 6 10764-10794 O 0820!16 3 T 6 10778 -10794 O 0325115 RK T 6 10794 -10622 0 0820!16 41 2' 6 10798 -10822 O 0324/15 1 2" 6 10812-10822 O 0324/15 RK 2" 6 10831 -10842 O 0225/09 2-12" 6 10851-10861 O 03/1 U01 2-12" 6 10861-10869 O 02117M 2-12' 6 10880-10905 O 02/17/03 2' 6 10915-10925 O 0224/09 7' LNR 26#, L-80 BTC -M, D=6276' 11400' LTJ 13-12" FES X LANDING NP, D = 2.813" 1 GAS LFT MANDRELS ST MD TVD I DEV I TYPE VLV LATCH PORT DATE 6 33653357 03/05/09 14 FM -D DO(uE RK 16 1122/17 5 5213 4845 49 FMiD DOBE RK 16 1127/17 4 6693 5847 47 FMiO SO RK 24 1122/17 3 7981 6691 49 WHO DMY RK 0 1122117 2 9086 7498 41 FMiO DMY RIC 0 1122117 1 10189 8326 34 FMiD DMY RK 0 1122/17 &5/8" MLLOUT VVB•ADW 9916'-9934' 10247' 312" FIES X NP, D = 2.813' 10258' 3-12" X 4 1/2' XO, D = 2938 10260' 7" X 4-1/2" BKR SABL-3 PKR, D=3.93; 10266'31/2"HESXNlP,D=2.813' 10307' 3-12" HD; XN NIP, D = 2.750" 10309' 7'X 4-1/2' BKRZXP PKR D= 5 10319' 3112', 92#, 13 -CR -80, X 4-1 X 4-12" 9 -CR XO l\ 10322' 4-12'WLEG, D=3.958" \ 10458' 7"LNR 26# L-80 BTC, D = 10731• 20' MARKER JOINT 3.958' 11145• DATE REV BYT COMMENTS DATE I REV BY COMMENTS 061071179 ORIGINAL COMPLETION 04/11/17 JPK/JMO GLV CA) (04/10/17) 12M3100 RIO SDE7RACK 09/18/17 RB/JMD PULLED HEX PLUG (09/14/17) 03/05/09 /SV IGLVTVDIPERF CORRECTIONS 1127/17 ZV//JMD GLVC/O 1122/17 0628/09 KJB/TLH ADPERF 04/19/19 S/JMD AD PERF (04108119) 04102/15 MBGlJMDlADPERFS 0824/16 BTN/JMD ADPERFS(0820/16) PRUDHOE BAYUNB WELL: Z -21A PERMIT No:'2001010 APINo: 50-029-21938-01 I, T11 N, R12E, 719' FNL, 1669 BP Explombon (Alaska) STATE OF ALAS •ALASKA OIL AND GAS CONS RVATITION COMMION RECEIVED REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed OCT 1 1 2017 Abandon 0 Plug Perforations 0 Fracture Stimulate 0 Pull Tubing 0 Operations shutdown 0 Suspend 0 Perforate 0 Other Stimulate 0 Alter Casing 0 Chalk=PC 0 Plug for Redrill 0 Perforate New Pool 0 Repair Well ❑ Re-enter Susp Well 0 Othe. u El 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 200-101 3. Address: P.O.Box 196612 Anchorage, Development p Exploratory 0 AK 99519-6612 Stratigraphic ❑ Service ❑ 6. API Number: 50-029-21938-01-00 7. Property Designation(Lease Number): ADL 0028262 8. Well Name and Number: PBU Z-21A 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 11145 feet Plugs measured 10872 feet true vertical 9141 feet Junk measured feet Effective Depth: measured 11063 feet Packer measured 10260 feet true vertical 9067 feet Packer true vertical 8385.97 feet Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20"91.5#A-53 33-113 33-113 1533 515 Surface 2613 13-3/8"68#L-80 32-2645 32-2645 5020 2260 Intermediate 9886 9-5/8"47#L-80 30-9916 30-8110 6870 4760 Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth: Measured depth: See Attachment feet 2017. True vertical depth: See Attachment feet Tubing(size,grade,measured and true vertical depth) 3-1/2"9.2#13Cr80 28-10319 28-8435 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: 34 156 372 1418 272 Subsequent to operation: Shut-In 1650 1660 14.Attachments:(required per 20 AAC 25.070.25.071,8 25.283) 15.Well Class after work: Daily Report of Well Operations H Exploratory ❑ Development p Service 0 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 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: Peru,Cale Contact Name: Peru,Cale Authorized Title: Petroleum E/neer Contact Email: Cale.Peru©bp.com Authorized Signature: / Date: loxContact Phone: +1 9075644522 li Form 10-404 Revised 04/2017 V rL i/qg7 /0 /1 �/ ` 7- RBDM3 Lv OCT 1 2 2017 Submit Original Only • • Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, AK 99501-3572 RE: BP Exploration (Alaska), Inc. Report of Sundry Well Operations Summary October 11, 2017 To Whom it May Concern: Attached please find the Report of Sundry Well Operations for Pulling of Hex Plug for Well Z-21A, PTD # 200-101. 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 • • CD Q,,no000m co O (0 '— 0 N N- V L U y M co O O O �. co N N- - M O io O CO N Ca in O N- CO LI) O N LO tf) - M co N CO CO O CO 0 1 1 1 1 I- N N- M N O CO N CO CO CO CO O) V N CO iJ M to OLO CO to O) VM mC N d7 O 0 Q El I II , • Q a MNov- � ao co co co N CD cs) = N 1 • CO 0 0 I— CO0 co 0 O co Q cp CO M CO • C1) *k O J *k N N LU (0 *k M • N b0 N O) U O CV N N O7 V CO t r CO M CO Cr) C)o <- CO M N G) N C) N- 00 W H C)0 Q C F- W U U a a a z Z c w w w 0 j F- z z_ C..) U) Z J J • . a) Cl) . m m 00 = M com m M m CO m 00 CO t C) to N Ln I— O V = Ln C") V N O M Q. cnN O) N O V I- CA I- O N- N LU O CO O) O) O N M 00 V to I- CA O) N V p I- N- I` OO CO CO 00 CO 00 CO CO CO O) O) ❑ OD 00 00 00 OO OD CO CO 00 OD CO CO CO CO > I- a O I- T- N- CO - CO CO O) 00 00 CA 00 CO t Ln CO Ln N - N- O V <- '7 O) V CO I,- O. V ti N O) O) O V N- CA O Lfl CO ❑ m to N- O) O) O N 00 C") Vc0 CA O M W p r N- N- N- 00 CO 00 CO CO = CO OO C)) O) > p CO c OD 0o co 00 00 0o co 00 0o co 0o OD 0 > I- W 0 rY w ❑ ❑ Z W w 0 w ❑ I- E- J d W a Q Q Y O 0 0 m 00cn cn w Y Y m CO V N CO cO OO N N N r- Cn c0 LU J 0 0 wW W �- V Ln Ln N- CA O) N V CO CO O) N J J J a a. Z +.I ' N- NNNNNNco000000COmrn < < < w 0 - 0 C O 00000000000000 2220 0 0 0 J w w a ❑ Z Z Z 0 ❑ ❑ J ❑ -' E y S S S Z ❑ ❑ p p .0 E w w w a H H z O z () Q 2 0 co co cai) Cl) coa 4.0 Q N o, lo N1- _ C t OD CO V N V c V 00 N O Ln Q MQ O7 N V in O N- O CA '- 0) Ln LU CO W CO N- I— N- N- N- N- N- OO CO 00 00 OO O) ... p 0 0 0 0 0 0 0 0 0 0 0 0 0 0 CU 0- ca L a) 40 2 - cn --1 I F- I-0 a.J a i 2 2 O CO CO CO CO cn CD a 0 0 c LL LI_ LL LL LL LL LL Lt_ LL LL C' LL IZ a. Im [LEIa a a a O_ a D_ d W O_ a M a 0 t a) a 0 w J J H N d cn I- 0 m CO CO CO CO CO CO CO CO CO (A CO I. ❑ r- ,- c-- •- = = = = app = = ❑ D D Q c 0 0 0 0 0 0 0 0 0 0 0 0 0 0 W J J Z W O N N N N N N N N N N N N N N Z < N W W ."20000000001-0 = r- NI- V- m 0 0 0 0 0 0 0 0 0 Ln = I� V V 0 W W W J W WN • N N N N N N N N N N . ,- ,- = Z a C7 0 W W W W Q M M M M 00 M M M M N M N 6) M < ❑ ❑ ❑ J J ❑ ❑ m O m ❑ EEEJ J crow w • Q m m I I cn cn a. cc a) E m z « « « « « « « = = cnN N N N N N N N N N N N N m d O W 0 -100W d NNNNNNNNNN NNN < < CO m W L_ cn cn 0 cC Packers and SSV's Attachment PBU Z-21A SW Name Type MD TVD Depscription Z-21A PACKER 9743.53 7982.15 7" Baker ZXP Top Packer Z-21A TBG PACKER 10260.18 8385.97 4-1/2" Baker SABL-3 Packer Z-21A PACKER 10316.66 8433.04 5" Baker ZXP Top Packer S • 0 \ E -113 \ 2 a) ƒ � \ a0 a E § 0,- c c d - ( O d / 5 _ p c2 / / \ / © \ p + 6 % ƒ gb \ @ pC w/ 2§ \ CD o I CLR ,- O ' 0 >- \ / 0 L 00 Z $ E I / �— � R a) < 0 w / / > O / O I 0 ® O / Z _ ® < i H \ / \ § / \ 2 ± n __ 22 / I 2 Eo � A R N 8 - Aƒ / pƒ ,- 0- ' o / � / � \ \ OF 0. Wiz / � / \ ' < t L 7 Ce :GU ± 9 \ � �� � ƒ \ >+ < - ± d- & CO & - \ o c 'CO / � \ \ \ � \ 7 � ± Z w I o d R < uj % O < \ f a E / / $ 5 / / / \ / / \ g / \ 0 \ 2 2 = z ± x = _ \ _1 % E § k / b § \ i E \ co * I— LIJ LL \ / / < co < \ < / k i O 2 ; . ± E cc I cc ; a L < w w a \ \ \ m \ � / \ \ < III TREE= 4-1/16"CR 5M 0/w •TYNOTES: 3-1/2"CHROME TBG,4-1/2" ACTUATOR= BAKER -21 A CHROME LNR OKB.ELEV= 91.82' BF.ELEV= 57.42' KOP= 3100' Max Angle= 53°C 7400 2209' }—'3-1/T HES X LANDING NP, 0=2.813" Datum MD= 10856' Datum TVD= 8800'SS 13-3/8'CSG,68#,L-80 BTC, D=12.415" —I 2657' GAS LFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 6 3365 3357 14 FM-0 DOME RK 16 04/10/17 Minimum ID = 2.750" @ 10307' 5 5213 4845 49 FMHO DOME RK 16 04/10/17 IA 4 6693 5847 47 FM10 DOME RK 16 04/10/17 3-1/2" HES XN NIPPLE 3 7981 6691 49 FMiO DOME FE 16 04/10/17 2 9086 7498 41 FM10 DOME RK 16 04/10/17 1 10189 8326 34 FMHO SO RK 22 04/10/17 3-1/2"TBG,9.2#,13-CR NSCT,D=2.992" 9-5/8'X 7"BKR ZXP LNR TOP PKR/HGR —{ 9744' W/TEBACK SLV, D=6.375" / 9-518"MLLOUT WrDOW 9916'-9934' 1 1 TOP OF BAKER WHPSTOCK —{ 9916' 10247' H 3-1/2"I-ES X MP,D=2.813" 1 TOP OF EZSV BRIDGE PLUG H 9937' 10258' H3-112"X 4 1/2"XO,D=2.938 PERFORATION SUMMARY 10260' —7"X 4-1/2'BKR SABL-3 PKR,D=3.937" REF LOG:SCH PDCL 12/11/00 8 RST-SIGMA ON 02/24/09 ' 10286' —3-112"HES X NP,D=2.813" 1 ANGLE AT TOP PERF:34°@ 10698' Note:Refer to Roduction DB for historical pert data `" 10307' —43-1/2'FES XNNig,D=2.750' �1�11'���1�1�� SIZE SPF INTERVAL Opn/Sqz SHOT SOZ 11111111111 / 10309' H 7"X 4-112'BKR ZXP PKR,D=5.250" 11111111111 2" 6 10698-10716 0 08/20/16 11111111111 2" 6 10726-10756 0 08/20/16 11111111111 44.„1111111111 � 10319' --3-1/2",9.2#,13-CR-80,X 4-1l2" 11111111111 11111111111 + x4-1/2"9-CR XO l► 1 2" 6 10744-10752 0 03/25/15 11111111111 �� 11111111111 Y 6 10764-10794 0 08/20/16 1111111111111111111111 \P+ 10322' H4-1/2"WLEG, D=3.958' 2" 6 10778-10794 0 03/25/15 1111111111111111111111 2" 6 10794- 10822 0 08/20/16 11111111111 1111111111111111111111 ♦ 10458' --17"LHR 26#L-80 BTC,D=6.276" 2" 6 10798-10822 0 03/24/15 11111111111 2" 6 10812-10822 0 03/24/1514.1...4...1.4 11 1 11 1111 11111 111 10731' } -20'MARKER JOINT 2" 6 10831- 10842 0 02/25/09 11111111111 1111111111 •♦ 2-112" 6 10851- 10861 0 03/11/01 11111111111 1111111111 • 2-1/2" 6 10861-10869 0 02/17/03 11111111/111111/1/11 5 • 2-1/2" 6 10880-10905 0 02/17/03 111111111111111111111 • 2" 6 10915-10925 0 02/24/09 11111111111111111111 111111111111111111111 • ht..1.1.1.1.1.1.1t14 ;1.•1 7"LHR,26#,L-80 BTC-M,D=6.276" — 11400' PB[ i ]—[ 11063' 4-1/2"LHR,12.6#,13-CR-80,.0152 bpf,D=3.958" --I 11145' DATE REV BY COMMENTS DATE REV BY COMuENTS P UDHOE BAY UNIT 05/07/89 ORIGINAL COMPLETION 04/02/15M3G/JMDAMEETS WELL: Z-21A 12/13/00 RIG SIDETRACK 08/24/16 BTTYJMD ADPERFS(08/20/16) PERMT No: 2001010 03/05/09 /SV GLV TVD/PEFtF CORRECTIONS 04/11/17 JF IJMD GLV GO(04/10/17) API No: 50-029-21938-01 06/28/O9 KJBTTLH ADPERF 09/18/17 RB/JM) RLLED HEX PLUG(09/14/17) SEC.19,T11N,R12E,719'FHL,1669'FWL 03/20/10 JCMYSV GLV C/O(02/13/10) 08/01/14 CS/JMD SET HEX PLUG(06/26/14) BP Exploration(Alaska) STATE OF ALASKA • "'ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon 0 Plug Perforations 0 Fracture Stimulate 0 Pull Tubing 0 Operations shutdown 0 Suspend ❑ Perforate Q Other Stimulate 0 Alter Casing El Change Approved Program ❑ 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: 200-101 3. Address: P.O.Box 196612 Anchorage, Development Q Exploratory 0 AK 99519-6612 Stratigraphic ❑ Service ❑ 6. API Number: 50-029-21938-01-00 7. Property Designation(Lease Number): ADL 0028262 8. Well Name and Number: PBU Z-21A 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 11145 feet Plugs measured 10872 feet E P 2 2 2 016 true vertical 9141 feet Junk measured feet Effective Depth: measured 10872 feet Packer measured 10260 feet AO GCCvertical 8900 feet Packer true vertical 8386 feet (G(CC Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20"91.5#A-53 33-113 33-113 1533 515 Surface 2613 13-3/8"68#L-80 32-2645 32-2645 5020 2260 Intermediate 9886 9-5/8"47#L-80 30-9916 30-8110 6870 4760 Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth: Measured depth: See Attachment feet 4 True vertical depth: See Attachment feet SCANNED FE I 32N-,-; Tubing(size,grade,measured and true vertical depth) 3-1/2"9.2#13Cr80 28-10319 28-8435 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: 4' (29 A"C 260 yam; 7y' /A03 ;se 247 Subsequent to operation: 211 175 552 1339 266 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 Gas 0 WDSPL 0 Printed and Electronic Fracture Stimulation Data ❑ GSTOR ❑ WINJ 0 WAG 0 GINJ 0 SUSP 0 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 ,Q.,,,,i,___ ----- Phone +1 907 564 4424 Date 9/21/16 Form 10-404 Revised 5/2015 (r`tL- 1 0/4-0 �0��6 RBDMS r,0., SEP 2 6 2016 Submit Original Only • QoOoo � O Lf") N ti t LO U y M 0 0 0 0 0 i M N N- t M LO O co N m LO CO N- OD O� 00 LC) O N r LO Lf) 'CrCO M rLO N CO CO O CO milCi H N N- M N CD co N CO CO CO CO O) cr N N- CO LO CO COIn O) M VNt. N— O 'cY CO N O O O 0 p 2 • Q Q N 13) MNovc) co • L co co co r- O N °) • CQ d CD CO00 c2 CO LMn , 0oUU Q J _1' co co • W Ick c0 1:t CO a0 N a7 U - O cM o r- N r 4 M t O v- CO CO O) C M N J O N co N- co O LU • Q co O W U U W U o Z Z W W W O D ,H Z_ Z_ D s • N l6 m CD CO - C) 00 0) C0 M CO CO CO CON- CO M L1) N LC) N- O Cn M N 0 co N O r N- O O f- N cc O CO CD CD O N CO CO �t cc r- 0) CD N �t O N- N- ti CO 00 OD OO 00 OO 00 CO 00 CD CD 0 CO e0 00 00 00 CO 00 CO 00 CO 00 00 CO 00 I- O_ O N- CO - CO CO 0) CO CO CA co CO <- . LC) CO CC) N c- N- O V < 0) cJ CO N G- 4 N- N 0 0 0 V ti 0) LC) O CO CO ❑ Lo ti C)) 0) O N CO CO CO 0) CD CO W ❑ N- N- ti N.- O CO 00 00 CO 00 00 CA C)) > ❑ 00 00 OO CO 00 CO 00 CO CO CO 00 00 CO 00 0 > 2 Lu ❑ ❑• ❑ z H w 0 W ❑ a g g Y U O O CIS O O W Y Y 2 z (0 �t N CO OO r OO CN N N O) 00 CC) J U U W w W . c- �t L() Ln C)) CA N (fl CO CA N J J J a a (n CY �' fl f� N- 000000000p00 (A a a a W tZ Z C) C) C) C) 0 C) C) 0 C) C) C) C) C) C) 0 0 0 -J W W O 0 ca t w w w w ❑ ❑ O Z Z 0- I- < 2 2 2 O c~n cnn co co cai) C Q N ° N = t CND (..co - N - CO NY CO N O LC) Q CA N •Ct LO CO I,- O C7) CO cc CO cc o M 0 CO CO 00 OD 00 00 CD LY ❑ O O O C) O O O CD C) C) O O O CD tt; a a) L N a) CL 0 0 U 2• LL N1 a. L.L LL u_ LL LL L.L LL d' u_ o) C]) a a a_ a a w a a a_ w w a a a m Q Q Q Q Q Q Q Q Q Q d < CO CO a. 0 t N a to' co cc Cfl O O O Cfl cc co 'j- V ❑ 0 C) 0 C) ❑ 0 C 0 0 0 C) 0 C) 0 0 C) C) 0 C) C) 0 W Z O N N N N N N N N N N N N N N Z LL < W W OW N N W 0 0 0 0 0 0 0 0 0 cc N- Cfl UD W ❑ J N N N N N N N N N N - - N N ❑ U W ❑ w w Z 4_ J W W w LL W C, CO 00 00 00 CO 00 CO 00 00 N 00 NCO CO a ❑ J H J J D J D CL 0 m ❑ n w J J O a 3 W W a a a co n LL cn a Nr m E m Q Q Q Q Q Q Q Q Q Q Q Q Q Q N (NI N N N N N N N N N N N N N m d O d O J O NO W d NNNNNNNNNNNNNN a a m m IUi u- cn cn a w • • Packers and SSV's Attachment PBU Z-21A SW Name Type MD TVD Depscription Z-21A PACKER 9743.53 7982.15 7" Baker ZXP Top Packer Z-21A TBG PACKER 10260.18 8385.97 4-1/2" Baker SABL-3 Packer Z-21A PACKER 10316.66 8433.04 5" Baker ZXP Top Packer • • 4- 0 0 co cn _ �O -Ta -a N _Q to N U) Q (0 O N m ti O f-- I-- E N N -Q N m Z P 6) 6) 0_ L O CO LO N N Q E -0 a) O -t Z N_.U ) OOOO Z a p N m W' O a O � 0 rY 0 Q m o o � C in o 2 W F- HF- Hr o @ J o' _ J J J J 11 OQ- c0 N 3 Q © _I SZO W 000UN W 0 N E Z E w ❑ G_ E E 0 0 3 I-L CD o_ M M M M W O � 0 c 4- O u-i ❑ o t �t id er,H CD Q O L O 0 ❑_ cc 10 Q II II II II F- z u) _o +J - I- U) W HHRH c -a � 0 E • Y (Xo Z2000OO U zt co 0 J ___I i 0 u) N D 'O O U m W U) U) W CD -' _ 0 Q w C J m I-- o_ o_ o_ or U) * -0 °' c- E _ m m W Q -i -2w E Q Z I � Da_ tOJ J O o_ H QWOOOOZ E ac_w 0 O � � d :TNS ❑ 2m � HHHHZ Q oQ a��� E0 0 � 0 ((/) J + LLa000U0) < -oH Q fi0 cFH' H f0U � ❑ _ ❑ to ❑ Qo000UH o_ 5 CD CV � u J c aca L J O NZ C0 ZNLW-LOO . . _ . . _ W' Z ❑ W Q z Q NEN N dw � � c QQ o a 1- 0,5Hco � ccoo � � ra � Z C �W � � n aOQaF Iz � O Ja0000wn0 v� H Z m : o' Q ai w 0 •- 00 - * W 0_ UZ W coo ' ' � F- D - U O Qa Q O * 0) U Q 3 O v Q O - co U , N rn co N O w w 0 > H II _ co v- 0)alU) r) m 1-0 >- 0 (d = r- l-- r� cow 2 EE IL U) c)--Q5 -. 1352 <- 1- > N U)Lu >>N 2 aQ r' HH O o O O ct j u) Ce crE , E O O 6 o H > U > W W W (-1-i d O J '� ZOcoH a) HQ o 3 °° '30H < 2 ❑ ZQF- ZZZZU ; W H o c N o p c H ❑ 0 J - H 00000C) ,- 0 D _ E pLL (n0 ❑ N = NNNN � o 0 i- m co = o 111 Z j 0oa -0 c _0 o �o0 2HLO " U) ❑ NMo ° O H cam ❑ co wU) ❑ W D Zc° f�� o c � o c0 ❑ Zao XHiJ.JH -r ❑ ❑ ❑ ❑ mZJ eL = 0001- � � O CD .1- cco cp IOU) t0 `- oWQ > HHI- I- z U) o c � � , W u • m H WQ ❑ O � JH1 < < < < 0 O -I '11 ?ice N cn cnHn H111 H � JU) W0' CCEtWI- O W D0II -°OL � n m = 1WOwIXUoHI- wCaZ0000Z12m TD cco m * U - c O U o > QUI- } ccLtEE * iwwww WOO aa) � � : � : H 0_"5 .- "5 !?LL : < IJU ❑ ❑ : :, Q0_ 0_ 0_ 0- 1- 1 .*k o 2 0 w H 0 CO CD CD o ,- ›- N 0 N O U Lo H N TDM O o >_ _ O m N M H o�O COCO N 0 M CO Q FMC TTREE= 4-1116"CR 5M CNV • SAht i Y NOTES: 3-1/2"CHROME TBG,4-1/2" ACTUATOR= BAKER Z-2 CHROME LNR OKB.R,EV= 91.82' BF.ELEV= 57.42' KOP= 3100' Max Angle= 53°@ 7400' ® 2209' —I3 1/2"HES X LANDING NP, D=2.813" Datum MD= 10856' Datum TVD= 8800'SS 13-3/8"CSG,68#,L-80 BTC, D=12.415" — 2657' GAS LFT MANDRELS ST MD ND DEV TYPE VLV LATCH PORT BATE 6 3365 3357 14 FM-10 DOME RK 12 02/13/10 Minimum ID = 2.750" @ 10307' 5 5213 4845 49 FMHO DOME RK 16 02/13/10 3-1/2" HES XN NIPPLE 4 6693 5847 47 FM10 DOME RK 16 02/13/10 3 7981 6691 49 FM-10 SO RK 20 02/13/10 2 9086 7498 41 RA-10 DMY RK 0 12/31/00 1 10189 8326 34 FM-10 DMY RK 0 02/13/10 3-1/2"TBG,9.2#,13-CR NSCT,ID=2.992"' 9-5/8"X 7"BKR ZXP LNR TOP PKR/HGR H 9744' 1 Wl TEBACK SLV, D=6.375" 2 1e 9-5/8"MFLOUT WINDOW 9916'-9934' TOP OF BAKER WHPSTOCK —1 9916' 1-- 10247' H 3-1/2"HES X NP,D=2.813" TOP OF EZSV BRIDGE PLUG —1 9937' 10258' —13-1/2"X 4 1/2"XO,D=2.938 PERFORATION SUMMARY r110260' —{7"X4-112"BKR SABL-3 PKR D=3.937" REF LOG:SCH PDCL 12/11/00&RST-SIGMA ON 02/24/09 , I • I 1 10286" —13-1/2"FES X NP,D=2.813" ANGLE AT TOP PERF:34°@ 10698' Note:Refer to Production DB for historical pert data030T�—3-112'HES XN NP,D=2.750" SIZE SPF NTERVAL .11�1111141`"Al.� Opn/Sqz SHOT SOZ 11111111111 10309' 7"X 4-1/2"BKR ZXP PKR D=5.250" 2" 6 10698-10716 0 08/20/16 111111111111111111111 1111111111 2' 6 10726 10756 0 08/20/16 11111111111 44„ 10319' I—3-1/2",9.2#,13-CR-80,X 4-1/7 111111111111111111111 \�1 X 4-1/2"9-CR XO 2" 6 10744-10752 0 03/25/15 1111111111 11111111111 4h, 2" 6 10764-10794 0 08/20/16 111111111111111111111 1 10322' J-14-1/2"WLEG, D=3.958" 2" 6 10778-10794 0 03/25/15 111111111111111111111 2" 6 10794-1082.2 0 08/20/16 111111111111111111111 1111111111 sl 10458' —#7"LHR 26#L-80 BTC,D=6.276" 2" 6 10798-10822 0 03/24/15 11111111111 2' 6 10812-10822 0 03/24/15 11111111111111111111 ♦ 10731' 1---20'MARKER JOINT 111111111111111111111 ♦ 7 6 10831 -10842 0 02/25/09 1111111111111111i111 ♦♦ 2-1/2" 6 10851 -10861 0 03/11/01 1111111111 2-1/2" 6 10861 -10869 0 02/17/03 11111111111111•1•1111 ♦ 10872' —INTER WELL 270-450 2-1/2" 6 10880-10905 C 02/17/03 111111111111111111111 ♦ HEX RUG,2-1/2"FN, 2" 6 10915-10925 C 02/24/09 111111111111111111111 '�� ♦• NE 10875' 1111111111 1111111111 1,1,1,1,1,1,1,1,1,1,1, .♦ (06/26/14) " N, 7 LN = 11 R 26#,L-80 BTC-M,ID s.27s" H 11400' ff PBTD 11063' i • 4-1/2"LNR,12.6#,13-CR-80,.0152 bpf,ID=3.958" H 11145' DATE REV BY COMMENTS DATE REV BY COM :NTS PRUDHOE BAY UNT 05/07/89 ORIGINAL COMPLETION 04/02/15 1/13G/JM6ADPERFS WEIL: Z-21A 12/13/00 RIG SIDETRACK 08/24/16 BTWJMD ADPERFS(08/20/16) PERMT No:2001010 03/05/09 /SV GLV TVD/PEW CORRECTIONS AR No: 50-029-21938-01 06/28/09 KJB/TLH ADPERF SEC.19,T11N,R12E,719'FHL,1669'FM_ 03/20/10 JCMSV GLV C/O(02/13/10) 08/01/14 CS/JM) SET HEX PLUG(06/26/14) BP Exploration(Alaska) • 11) Roby, David S (DOA) From: Catron,Garry R(Wipro) <Garry.Catron@bp.com> Sent: Tuesday, October 04, 2016 10:50 AM To: Roby, David S (DOA) Subject: RE:Sundry report for well PBU Z-21A(PTD 200-101) Dave, Sorry, I missed the bad value from the Well Test. This field is actually a calculated value from Total Gas Measured — Gas Lift Volume which sometimes comes out as a negative value. A better Well Test to have used would have been: 129 Oil 260 Gas 440 H2O 1203 Casing Pressure 267 Tubing Pressure Thanks, Garry Catron PDC PE 907-564-4424 From: Roby, David S(DOA) [mailto:dave.roby()alaska.gov] Sent:Tuesday,October 04, 2016 10:33 AM To: Catron,Garry R(Wipro) Subject: Sundry report for well PBU Z-21A(PTD 200-101) Garry, In reviewing the subject report I noticed that in Box 13,where before and after daily production rates are reported,that in the prior to well operation section it reported the gas flow to be-12 mcfpd. I'm assuming this is a typo since I can't figure out how a well could flow negative gas. Can you verify what this number should be? Thanks, Dave Roby Sr. Reservoir Engineer Alaska Oil and Gas Conservation Commission (907) 793-1232 CONFIDENTIALITY NOTICE:This e-mail message,including any attachments,contains information from the Alaska Oil and Gas Conservation Commission(AOGCC),State of Alaska and is for the sole use of the intended recipient(s).It may contain confidential and/or privileged information.The unauthorized review,use or disclosure of such information may violate state or federal law.If you are an unintended recipient of this e-mail,please delete it,without first saving or forwarding it,and,so that the AOGCC is aware of the mistake in sending it to you,contact Dave Roby at(907)793-1232 or dave.roby4alaska.gov. 1 STATE OF ALASKA i 3KA OIL AND GAS CONSERVATION COMI. 410N • REPORT OF SUNDRY WELL OPERATIONS 1 Operations Abandon U Repair Well H Plug Perforations H Perforate U Other H Performed Alter Casing ❑ Pull Tubing Stimulate-Frac ❑ Waiver ❑ Time Extensions Change Approved Program ❑ Operat.Shutdown❑ Stimulate-Other ❑ Re-enter Suspended Well❑ 2 Operator 4 Well Class Before Work 5 Permit to Drill Number Name BP Exploration(Alaska),Inc Development0 Exploratory ❑ 200-101-0 3 Address P 0 Box 196612 Stratigraphic❑ Service ❑ 6.API Number Anchorage,AK 99519-6612 50-029-21938-01-00 7 Property Designation(Lease Number) 8 Well Name and Number ADL0028262 PBU Z-21A 9 Logs(List logs and submit electronic and printed data per 20AAC25 071) 10 Field/Pool(s) PRUDHOE BAY,PRUDHOE OIL 11 Present Well Condition Summary Total Depth measured 11145 feet Plugs measured 10871.5 fe BECE I\I E11�y "' true vertical 9140 81 feet Junk measured None feet APR 14 2015 Effective Depth measured 10871 5 feet Packer measured See Attachment feet true vertical 8899 41 feet true vertical See Attachment feet (Q I`._I CC Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20"Conductor 30-110 30-110 0 0 Surface 2628 13-3/8"68#L-80 29-2657 29-2656 97 5020 2260 Intermediate None None None None None None Production 9888 9-5/8"47#NT8OS 28-9916 28-8109.72 6870 4760 Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation depth Measured depth 10744-10752 feet 10778-10794 feet 10798-10812 feet 10812-10822 feet 10831-10842 feet 10851 -10861 feet 10861-10869 feet 10880-10898 feet 10915-10925 feet True Vertical depth 8792 58-8799 21 feet 8820 78-8834 09 feet 8837.43-8849 13 feet 8849 13-8857 53 feet 8865 1-8874 38 feet 8881 99-8890 48 feet 8890 48-8897 28 feet 8906 66-8922 07 feet 8936 71 -8945.36 feet Tubing(size,grade,measured and true vertical depth) 3-1/2"9 2#13Cr80 25-10322 25-8437 51 Packers and SSSV(type,measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12 Stimulation or cement squeeze summary Intervals treated(measured) Treatment descnptions including volumes used and final pressure �f r /�� J. �} (� 13 Represenl�llf� i ADverage Product on OF InSction Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation 150 634 1535 0 243 Subsequent to operation 115 464 1018 0 252 14 Attachments 15 Well Class after work Copies of Logs and Surveys Run Exploratory❑ Development 0 Service❑ Stratigraphic ❑ Daily Report of Well Operations X 16 Well Status after work Oil Q Gas ❑ WDSPI❑ GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUG0 17 I hereby certify that the foregoing is true and correct to the best of my knowledge Sundry Number or N/A if C 0 Exempt N/A Contact Nita Summerhays Email Nita.Summerha s• b•.Com Printed Name Ni - Summe j s / Title Petrotechnical Data Engineer i — Signatur- /. ,��A��r�vi ' Phone 564-4035 Date 4/13/2015 r rt s/` ' 1RBDMS AH 1 8 2015 ,_c- /•/,.,— Form 10-404 Revised 10/2012 Submit Original Only Daily Report of Well Operations ADL0028262 ***WELL SHUT IN UPON ARRIVAL***(perforating) DRIFT 38'x 2" DUMMY PERF GUN WITH 2.7"CENT ON BOTTOM, SAT DOWN @ 10,858' SLM. 3/19/2015 ***WELL LEFT SHUT IN. PAD OP NOTIFIED OF DEPARTURE*** ***JOB CONTINUED FROM 22-MAR-2015*** (E-LINE ADPERFS) INITIAL T/I/O = 1650/1800/160 MADE TWO RUNS W/ELINE LOGGING STRING &24'X 2" PERF GUNS LOST TELEMETRY ON BOTH RUNS AND UNABLE TO REPAIR DOWNHOLE PREPARE NEW CABLE HEAD TO RETURN TOMORROW. WILL ALSO CHANGE OUT ERS TOOL LAY DOWN EQUIPMENT FOR THE NIGHT AND RETURN IN AM TO PERF WELL LEFT SHUT IN - NOTIFIED PAD OP OF WELL STATUS 3/23/2015 ***CONTINUED 24-MAR-2015*** ***JOB CONTINUED FROM 23-MAR-2015***(E-LINE ADPERFS) RIG-UP, PT, IDENTIFY LEAKY SSV, GREASE CREW SERVICE VALVES, PT, DRIFT TO HEX PLUG AT 10872' WITH HEAD/ERS/WEIGHT X4/UPCT OAW=450# OAL= 34' MAX OD= 2.125" CHANGEOUT WITH NIGHT CREW AND RIH WITH HEAD/ERS/WEIGHT X 2/UPCT/FIRINGHEAD/GUN OAW=415# OAL= 50' MAX OD =2.125" PERFORATE THE INTERVAL 10798'-10822'W/POWERJET OMEGAS 6 SPF 60 DEG PHASE CCL TO TOPSHOT= 5.3', CCL STOP DEPTH = 10792,7' API DATA: PENETRATION =21.8", ENTRANCE HOLE = 0.22", MAX SWELL=2.31" IN GAS 3/24/2015 ***JOB TO BE CONTINUED 25-MAR-2015*** ***JOB CONTINUED FROM 24-MARCH-2015*** RIH WITH PERF TOOLSTRING. PERF INTERVAL 10778'- 10794'. CCL TO TOP SHOT=7.25', CCL STOP DEPTH = 10770.75'. GOOD SHOT. POOH RIH WITH PERF TOOLSTRING. PERF INTERVAL 10744'- 10752'. CCL TO TOP SHOT= 5.3', CCL STOP DEPTH = 10738.7'. GOOD SHOT. POOH REACH SURFACE AND RID DOWN WELL SHUT IN UPON DEPARTURE. DSO NOTIFIED. FINAL T/I/O = 1670/ 1750/ 160 PSI 3/25/2015 ***JOB COMPLETE*** FLUIDS PUMPED _ BBLS 2 DIESEL 2 TOTAL a o 0 0 0 m ca s Lo - L N 0 1U N V N U to 0 0 0 0 L. V C`') I- CO 3 N V CO O O CO CO CO A- N I— O O) CO I- 6) LC) O CT) CO I� LO V O LO CO LC-) A- A- CO 'Ct CO CA CO N CO LOH LO CO O N CO O LC) ch N N N w N rr C7 O N CON 0I I I I I I 4 t0 2 • N rn CO o d CO 0) LO CO CO I� N N N (P ▪ J 0 Q °O o o CO 0o0co ,0 d J �# CO (▪/) N C * CO CO N (0 () U CV U - O N LO M ' O CO CO CO t 4- p)O V Cfl O N O Z O 0 w > > OU Mo � � DIaiZ U O Z Z D J D J J d C� Packers and SSV's Attachment ADL0028262 SW Name Type MD TVD Depscription Z-21A PACKER 9744 7982.5 7" Baker ZXP Top Packer Z-21A PACKER 10260 8385.83 7" Baker SABL-3 Packer Z-21A PACKER 10309 8426.65 4-1/2" Baker ZXP Packer TREE= = 4-1/16"CR 5MCM/ L. .TY NOTES: 3-1/2"CHROME TBG,4-1/2"VVEU_FEAD FMC - ACTUATOR= t3AKER Z-2 1 A CHROME LNR OKB.Ei_EV= 91.87 BF.EIEV= 57.42' KOP= 3100' Mix Angle= 53*@ 7400' 0 [ 2209' H3-1/2"FES X LANDING NP, ID=2.813" Datum MD= 10856' ( tumWD= 8800'SS 13-3/8'CSG,68#,L-80 BTC, ID=12.415' H 2657' GAS LFT MANDRELS ST M) TVD DEV TYPE VLV LATCH FORT DATE Minimum ID = 2.750" @ 10307' 6 3365 3357 14 FM-IO COME FE 12 02/13/10 LA" 5 5213 4845 49 FM-0 CONE FE 16 02/13/10 3-1/2HES XN NIPPLE 4 6693 5847 47 FM-10 CONE RK 16 02/13/10 3 7981 6691 49 FM-10 SO IRK 20 02/13/10 2 9086 7498 41 FM-0 DMY F:0( 0 12/31/00 1 10189 8326 34 FM-IO MY Ft( 0 02/13/10 3-1/2"TBG,9.2#,13-CR NSCT,ID=2.992" 9-5/8"X 7''BKR ZXP LNR TOP R<R/HGR —I 9744' 2 W/TACK SLV, D=6.375 1 9-5/8"MILLOUT WWOW 9916-9934' " i I TOP OF BAKER WHFSTOCK H 9916' I-- , 1024T 1-13-1/7 HES X NP,V=2.813" 10258' ,-i 3-1/7 X 4 1/7 X0,ID=2.938 TOP OF EZSV BRIDGE PLUG H 993T 7 10260' —17'X 4-1/2"BKR SABL-3 FKR ID=3.937" FEFFORABON SUMMARY __, 10286' —13-1/2"FES X NP,D=2.813' REF LOG:SCI-4PDCL 12/11/00&RST-SIGMA ON 02/24109 lat 10307' —3-112"FES XN NED,0=2.750" ANGLE AT TOP PERF:34*@ 10744' Note:Refer to Production DB for historical pert data NAM% 4 ) 10300' —7"X 4-1IT BKR Z X P P K R,v=5.250' SS...1SSSS SIZE SFF NTERVAL Opn/Sgz SHOT SQZ ••••••••••• ISS.S.S.S. 7 6 10744- 10752 0 03/25/151 ...**....1* 41h. 10319' 1.S.S.S.S. P-, ••11.14.1/1 • X 4-1/2"9-CR X0 r 6 10778- 10794 0 03/25/15 SSSSSSSSSS . *********** 4b• T 6 10798- 10822 0 03/24/15 0...0..00. 'IP* ....441...1 10322' I—4-1/2"VVLEG, 0=3.958" 2' 6 10812- 10822 0 03/24/15 ***1...... /..../..... T 6 10831- 10842 0 02/25/09 •••••••••• 1.14....... 10458' —17-LNIR 26#L-80 BTC,ID=6.276' S.S.S.S.S1 2-1/2' 6 10851- 10861 0 03/11/01 SS.1.1.11SS •••••••••• 10731' H20'MARCERJONT 2-1/2' 6 10861- 10869 0 02/17/03 11,111...14 S.S.S.S.S. • 2-1/2" 6 10880-10905 C 02/17/03 S•S•••••••• •••••••••• • T 6 10915- 10925 C 02/24/09 ••••••••••• •••••••••• • •11.11.1.1. •••••••••• S 10872' —INTER WELL 270-450 ••••••••••• • •••••••••1 HDC RUG,2-1/2"FN, ----- SS1SS1SSSSS •••••••••• S 1111SSS1SSS • RE@ 10875' tteStattytte 7"LNR,26#,L-80 BTC-M,ID=6.276" —I 11400' tvil'egAWIWAWA/ 1A (06/26/14) 4,4* PBTD 11063' _. 4-1/2"LNR, 12.6#,13-CR-80,.0152 bpf,ID=3.958" ---I 11145' I DATE REV BY COPMENTS DATE REV BY CONSENTS PRUDHOE BAY UNIT 05/07/89 ORIGINAL COMPLETION 04102115 M3G/JNCI A°PERES WELL: Z-21A 12113/00 RIG SIDETRACK FERMT No:'2001010 . , 03105/09 /SV 'GLV TV D1PE3F CORRECTIONS AR Nki: 50-029-21938-01 , 06/28/09 KJB/TLH ADR3S- SEC. 19,T11N,R12E 719'RI_ 1669'PAC 03/20/10 JCMSV GLV CO(02/13/10) 08/01/14 CSIJM) SET FEX PLUG(06/26/14) " ' E3P Exploratior(Alaska) r~ LJ BP Exploration (Alaska) Inc. Attn: Well Integrity Coordinator, PRB-20 Post Office Box 196612 Anchorage,Alaska 99519-6612 ~.~~.vA~~~~~ ~`.' y . C ~ L~~L.`~i August 14, 2009 Mr. Tom Maunder Alaska Oil and Gas Conservation Commission 333 West 7th Avenue Anchorage, Alaska 99501 Subject: Corrosion Inhibitor Treatments of GPB Z-Pad Dear Mr. Maunder, ~ bp '. ~~o~~~~~ OCT ~ 5 20Q9 ~11esk~ Dil ~ Gas Cons. Gom~~niR~ion Anchora~~ ~o'~~~ ,~..-~~ Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB Z- Pad that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, API and PTD numbers, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Anna Dube, at 659-5102. Sincerely, ~; . Torin Roschinger BPXA, Well Integrity Coordinator ~ ~ r~ ~ BP Exploration (Alaska ) Inc. Surface Casing by Conductor Annulus Cement, Corrosion inhibitor, Sealant Top-off Report of Sundry Operations (10-404) Date Z-Pad 8/13/2009 Well Name PTD # API # Initial top of cement Vol. of cement um ed Final top of cement Cement top off date Corrosion inhibitor Corrosion inhibitor/ sealant date ft bbls ft na al Z-01 B 2081080 50029218300200 NA 0.2 NA 3.40 7/24/2009 Z-02A 1960430 50029218140100 NA 0.4 NA 3.40 7/24/2009 Z-03 1971310 50029227870000 NA 1.3 NA 11.90 7/24/2009 Z-04A 2042300 50029219900100 NA 1.5 NA 14.50 7/24/2009 Z-OS 1900780 50029220560000 NA 1 NA 8.50 7/24/2009 Z-06 1880320 50029217980000 NA 0.1 NA 1.70 7/24/2009 Z-07A 1931100 50029220460100 NA 2 NA 17.00 7/24/2009 Z-08A 1931280 500292i7870100 NA 02 NA 2.55 7/24/2009 Z-09A 2081410 50029219670100 NA 0.2 NA 1.70 7/24/2009 Z-10 1891160 50029219860000 NA 1.3 NA 11.10 7/24/2009 Z-11A 2050310 50029220530100 NA 0.2 NA 1.70 7/26/2009 Z-12 1891020 50029219770000 NA 1.2 NA 8.50 7/26/2009 Z-13A 2042030 50029220690100 NA 3.6 NA 24.66 7/26/2009 Z-746 2060990 50029218440200 NA 0.2 NA 1.70 7/26/2009 Z-15 1880880 50029218490000 NA 0.2 NA 1.70 7/26/2009 Z-16 1920120 50029222450000 NA 0.3 NA 2.55 7/26/2009 Z-17 1891390 50029220010000 NA 3.7 NA 34.00 7/26/2009 Z-18 1890960 50029219710000 NA 0.2 NA 1.70 7/26/2009 Z-19A 2061050 50029222510100 NA 0.2 NA 1.70 7/26/2009 Z-20 1881000 50029218590000 NA 0.2 NA 1.70 7/26/2009 Z-21A 2001010 50029219380100 NA 0.2 NA 1.70 7/23/2009 Z-226 1960350 50029220370200 NA 0.5 NA 5.10 7/23/2009 Z-23B 2041080 50029219500200 NA 0.3 NA 1.70 7/23/2009 Z-24 1890180 50029219170000 NA 0.3 NA 2.55 7/23/2009 Z-25 1881590 50029219020000 NA 0.2 NA 1.70 7/23l2009 Z-26A 2060790 50029219450100 NA 0.3 NA 3.40 7/23/2009 Z-27 1900310 50029220220000 NA 0.2 NA 2.55 7/25/2009 Z-28 1881270 50029218790000 NA 0.2 NA 1.70 7/25/2009 Z-29 1890650 500292t9540000 NA 0.2 NA 1.70 7/25/2009 Z-30A 2032190 50029220130100 NA 0.2 NA 3.40 7/25/2009 Z-31 1881120 50029218710000 NA 0.3 NA 3.40 7/26/2009 Z-328L1 1970350 50029219246000 NA 0.2 NA 1.70 7/25t2009 Z-33A 1890050 50029218950100 NA 0.5 NA 3.40 8/8/2009 Z-35 1980930 50029228840000 NA 1.3 NA 11.50 7/4/2009 Z-38 1980600 50029228730000 NA 1.2 NA 11.90 7/26/2009 Z-39A 2042240 50029229950100 NA 3.8 NA 39.90 7/25/2009 Z-46A 2052030 50029232800100 NA 1.7 NA 13.60 7/26/2009 Z-100 2031710 50029231820000 NA 5 NA 45.90 7/23/2009 Z-101 2001620 50029229780000 NA 1 NA 10.20 7/23/2009 Z-102 2070500 50029233530000 NA 1.5 NA 15.30 7/25/2009 Z-103 2042290 50029232350000 NA 1.5 NA 10.20 7/25/2009 Z-108 2052010 50029232920000 NA 1.5 NA 11.90 7/24/2009 Z-112 2071720 50029233800000 NA surface NA 07/14/09 ~~~~~~~~~~~~ NO. 5310 ~. "1 `ti'~~.%~~ lAlaska Data ~ Gonsuiting Services t ;,~ r Company: State of Alaska ?525 Gambell Street, Suite 400 ~+ ~xk'~~~;„' ~~~ lt ?;~ ~~~ " Alaska Oil & Gas Cons Comm f~nchorage, AIC 99503-2838 " Attn: Christine Mahnke~n ~1TTW: Be4h 333 West 7th Ave, Suite+ 100 Anchorage, AK 99501 N~/ell Job # Log Description Date BL Color CD ~+ , ~-20 AP3Q-00043 SBHP SURYEY - 06/17/09 1 ~ P2-31 AZCM-00029 LDL L~ ~ O6/17/09 1 ia-03 AY1M-00022 SBHP SURVEY 06/15/09 1 1 Z-14B AYQQ-00036 TEMP SURVEY & BHP . 06/23/09 1 ~ f~-16 AP3Q-00042 SBHP SURVEY ` ~ 06/16/09 1 1 V-SlS.:. 11999053 USIT - 10/12/08 1 1 ;' RI-i 1G ' AP3Q-00042 SBHP SURVEY O6/16l09 1 ~ ""`-fi3-92 AY3J-00030 LDL _ 06/12/09 1 1 L1-30 AVYS-00049 PRODUCTION PROFILE -nj j'jb ~ 06/22/09 1 1 17-078 AYQQ-00031 SBHP SURVEY "3 ( t5 06/11/09 1 1 05-25B AP3Q-00040 SBHP SURVEY - 06/11/09 1 1 ~°27A AXBD-00028 MEM INJ PROFILE 06/12/09 1 1 11-36 6146-00066 CROSSFLOW & IBP ~- O6/23/09 1 1 Z-21A 8146-00065 SBHP SURVEY "" O6/21l09 1 1 X-17 AYTU-00043 PROD PROFILE -/ 06/08/09 1 1 ~-25 AWL8-00018 LDl ~x~ '~`(} - 05/28/09 1 1 02-338 AYTU-00033 USIT " ~ 05/19/09 1 1 P~-07 AVYS-00051 PRODUCTION PROFILE ~ O6l25/09 1 1 13-03 AWLB-00020 LDL O6/01/09 1 1 3-17F/K30 62NJ-00008 MEM INJ PROFILE ~J 06/15/09 1 1 MPS-OS AYS4-00080 LDL O6/15/09 1 1 13-12 AV1H-00019 LDL 07/OS/09 1 ~ Oi-25 AYTU-00046 USIT - ~J~j 06/28/09 1 1 W-39A AWLB-00023 STATIC TEMP SURVEY a'~ ~ O6/26/09 1 1 ~-35 AYTO-00022 SBHP SURVEY , 06/29/09 1 1 2-16 AV1H-00017 SBHPSURVEY ( (} ' 06/29/09 1 1 18-20 B581-00004 LDL ~ 06/27/09 1 1 Z-29 AVYS-00053 SBHP SURVEY ~~=a ~~`~E~~~' v~~ ~ 07J03/09 1 1 L5-09 AYQQ-00032 RST ~ I ~- ~ 06/13/09 1 1 07-10A DI CACC Al~If~ll1\Rfl cnr_~ e~ B1JJ-00022 r~~mr sv c.~i.~~~ MCNL ~- ~~ ~ _~ ~~~. w.... ...-~... ......... ....~ ~~_.. ___.. _ 05/26/09 ' ._ __-___""_'_-__~_"___.. ~.~.............v..r. BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. ,i ~ I~ ` , -. / Alaska Data 8 Consulting Services 2525 Gambeli Street, Suite 400 Anchorage, AK 99503-2838 u ~ STATE OF ALASKA • ALAS~IL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS ~~'~~ ' ~•/0-09 1. Operations Abandon ~ Repair Well ~ Piug Perforations ~ Stimulate ~ Other ~ Performed: Alter Casing ~ Pull Tubing ~ Perforate New Pool ~ Waiver~ Time Extension ~ Change Approved Program ~ Operat. Shutdown ~ Perforate Q- Re-enter Suspended Well ~ 2. Operator BP Exploration (Alaska), Inc. 4. Current Well Class: 5. Permit to Drill Number: rvame: De~elopment l~' - Exploratory ~ 200-1010' 3. Address: P.O. Box 196612 Stratigraphic ~ Service ~ 6. API Number: Anchorage, AK 99519-6612 50-029-21938-01-00 7. KB Elevation (ft): 9. Well Name and Number: 85.12 KB . PBU Z-21A - 8. Property Designation: 10. Field/Pooi(s): ADLO-028262 - PRUDHOE BAY Field/ PRUDHOE OIL Pool 11. Present Well Condition Summary: Totai Depth measured 11145 - feet Plugs (measured) None true vertical 9140.81 _ feet Junk (measured) None ~"~~~~~~"" ~~~ `~ ~~~~~ Effective Depth measured 11040 ~ feet true vertical 9047 _ feet Casing Length Size MD ND Burst Collapse Conductor 110 20" Surface - 110 Surface - 110 Surface 2620 13-3/8" 68# L-80 Surface - 2657 Surface - 2657 4930 4760 Production 9879 9-5/8" 47# NT80S Surface - 9916 SurFace - 8110 6870 4760 Liner 714 7" 26# L-80 9744 - 10458 7982 - 8552 7240 5410 Sidetrack liner 836 4-1/2" 12.6# 13CR-80 10309 - 11145 8427 - 9141 8430 7500 Perforation depth: Measured depth: SEE ATTACHMENT -_ _ _ _ True Vertical depth: _ _ _ _ _ Tubing: (size, grade, and measured depth) 3-1/2" 9.2# 13-CR SURFACE - 10309 0 0 - Packers and SSSV (rype and measured depth) 9-5/8"X7" BKR ZXP LNR TOP PKR/HGR 9744 7"X4-1/2" BKR SABL-3 PKR 10260 7"X 4-1/2" 4-1/2" BKR ZXP PKR 10309 0 12. Stimulation or cement squeeze summary: +.~ Intervals treated (measured): ~UN ~i 9 ~~Q~ Treatment descriptions including volumes used and final pressure: A~~~~4~ Q~{ Hl G~8 GOti$, ~or~a:~~n 13. Representative Daily Average Production or Injection ata Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing pressure Prior to well operation: 155 398 1026 306 Subsequent to operation: SI 14. Attachments: 15. Well Class after qroposed work: Copies of Logs and Surveys Run Exploratory ~ Development ~'- Service ~ Daily Report of Well Operations X 16. Well Status after proposed work: Oil ~~ Gas ~ WAG ~ GINJ ~ WINJ ~ WDSPL ~ 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 Gary Preble Printed Name Gary Prebl Title Data Management Engineer Signature Phone 564-4944 Date 6/25/2009 Form 10-404 vised 04/2006 ~' ~,~ ~,~ ~~~ ~ g 7~p~ ~ r,~ Submit Original Only C Z-21 A 200-101 PFRF OTT~4CHMENT ~ Sw Name Operation Date Perf Operation Code Meas Depth Top Meas Depth Base Tvd Depth Top Tvd Depth Base Z-21A 3/11/01 PER 10,851. 10,861. 8,881.99 8,890.48 Z-21A 2/17/03 APF 10,861. 10,869. 8,890.48 8,897.28 Z-21A 2/17/03 APF 10,880. 10,898. 8,906.66 8,922.07 Z-21A 2/24/09 APF 70,915. 10,925. 8,936.71 8,945.36 Z-21A 2/25/09 APF 10,831. 10,842. 8,865.1 8,874.38 Z-21A 6/21/09 APF 10,812. 10,822. 8,849.13 8,857.53 AB ABANDONED PER PERF APF ADD PERF RPF REPERF BPP BRIDGE PLUG P ULLED SL SLOTTED LINER BPS BRIDGE PLUG SET SPR SAND PLUG REMOVED FCO FILL CLEAN OUT SPS SAND PLUG SET FIL FILL SQF SQUEEZE FAILED MIR MECHANICAL ISOLATED REMOVED SQZ SQUEEZE MIS MECHANICAL ISOLATED STC STRADDLE PACK, CLOSED MLK MECHANICAL LEAK STO STRADDLE PACK, OPEN OH OPEN HOLE ~ • ~ Z-21A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY FLUIDS PUMPED BBLS 1 diesel 1 Total 04/27/09 ~~Il~~mb~~~~~ Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth ~/ s~~ . ~},~ ~ ~ ~l ~'i i` R ~ ~~4~ .s'V 3 u otia: NO. Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Wwll _L.h // I F-45A AP3O-00033 RST GRAVEL PACK LOG 04/17/09 1 VVIV/ vv 1 P2-07 AVYO-00023 PRODUCTION PROFILE ~ ^ 04/05/09 1 1 11-12 AYOO-00019 USIT L - 5 ~ 04/19/09 1 1 X-05 AYTO-00010 USIT _ Qj~ 04/03/09 1 1 X-01 AZ4D-00012 PRODUCTION PROFILE - ~ 03/18/09 1 1 Z-21A AP3O-00022 RST 0?J24/09 1 1 E-34L1 AYTU-00010 OH LDWG EDIT (IFLEX) 02/08/09 1 1 L-106 22026 OH LDWG EDIT (REDO) 01/10/02 1 MPF-96 09AKA0039 OH MWD/LWD EDIT ~ 02/23/09 2 1 F-19A 40018664 OH MWD/LWD EDIT - 02/14/09 2 1 F-18A 09AKA0034 OH MWD/LWD EDIT 03/16/09 2 1 06-23C 12066550 MCNL ~ 09/14/08 1 1 03-148 BIJJ-00005 MCNL 03/30/09 1 1 11-18 BOCV-00006 RST -- ( , 03!02/09 1 1 07-206 AWJB-00028 MCNL ~ 02/27/09 1 1 MPB-22A AXBD-00005 CH EDIT PDC-GR (CBL) 12/23/08 1 07-29D AXBD-00016 MCNL ~ () 03/17/09 1 1 09-33A AWJI-00019 MCNL `jf - - 04/01/09 1 1 DI CACC A!`1l AIA\A/1 Cnf~C ~C t+cllfT nV c~~e~l ~~~ ~ BP Exploration (Alaska) Inc. _ _ v.-~ vv.. ~..~, ~ , v. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. `' Anchorage, Alaska 99508 Date Delivered: Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth Received by: • • ~ ~. STATE OF ALASKA ALAS~IL AND GAS CONSERVATION COMMON REPORT OF SUNDRY WELL OPERATIONS ~~~EivE~ 1. Operations Abandon ~ Repair Well ~ Plug Perforations ~ Stimulated Othe r Performed: Alter Casing ~ Pull Tubing ~ Perforate New Pool ~ Waiver Time E~~t~n ~ xi OftS. ~OmmIS Change Approved Program ~ Operat. Shutdown ~ Perforate ~ r Re-enter Suspended Well ~ Anc~rQi'~ 2. Operator BP Exploration (Alaska), Inc. 4. Current Well Class: 5. Permit to Drill Number: Name: Development - Exploratory 200-1010 - 3. Address: P.O. Box 196612 Stratigraphic Service ~ 6. API Number: Anchorage, AK 99519-6612 50-029-21938-01-00 7. KB Elevation (ft): 9. Well Name and Number: 85.12 KB . PBU Z-21A - 8. Property Designation: 10. Field/Pool(s): ADLO-028262 ~ PRUDHOE BAY Field/ PRUDHOE OIL Pool 11. Present Well Condition Summary: Total Depth measured 11145 ~ feet Plugs (measured) None true vertical 9140.81 _ feet Junk (measured) None Effective Depth measured 11040 feet ~ ~ ° ~ Et's~~~', _ ~~ ~ ~ f.~a ~ ~~ (' ~ ~;! true vertical 9047 feet Casing Length Size MD TVD Burst Collapse Conductor 110 20" Surface - 110 Surface - 110 Surface 2620 13-3/8" 68# L-80 Surface - 2657 Surface - 2657 4930 4760 Production 9879 9-5/8" 47# NT80S Surface - 9916 Surface - 8110 6870 4760 Liner 714 7" 26# L-80 9744 - 10458 7982 - 8552 7240 5410 Sidetrack liner 836 4-1/2" 12.6# 13CR-80 10309 - 11145 8427 - 9141 8430 7500 Perforation depth: Measured depth: SEE ATTACHMENT - _ _ _ _ True Vertical depth: _ _ _ _ _ Tubing: (size, grade, and measured depth) 3-1/2" 9.2# 13-CR SURFACE - 10309 0 0 - Packers and SSSV (type and measured depth) 9-5/8"X7" BKR ZXP LNR TOP PKR/HGR 9744 7"X4-1/2" BKR SABL-3 PKR 10260 7"X 4-1/2" 4-1/2" BKR ZXP PKR 10309 0 0 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: 85 364 362 302 Subsequent to operation: 235 323 1305 263 14. Attachments: 15. Well Class after proposed work: Copies of Logs and Surveys Run Exploratory ~ Development - Service Daily Report of Well Operations X 16. Well Status after proposed work: Oil Gas ~ WAG ~ GINJ ~ WINJ ~ WDSPL 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 Gary Preble Printed Name Gary Preb Title Data Management Engineer Signature. "`p Phone 564-4944 Date 3/5/2009 iota Form 10-404 F~evised 04/2006 " ~`° r"°' 1 r^^r ~ ~,) ~ 4" !~ ~ ~~, 3 Submit Original Only ~ ^ /L3 Z-21 A 200-101 PERF ATTACHMENT • Sw Name Operation Date Perf Operation Code Meas Depth Top Meas Depth Base Tvd Depth Top Tvd Depth Base Z-21A 3/11/01 PER 10,851. 10,861. 8,881.99 8,890.48 Z-21A 2/17/03 APF 10,861. 10,869. 8,890.48 8,897.28 Z-21A 2/17/03 APF 10,880. 10,898. 8,906.66 8,922.07 Z-21A 2/25/09 APF 10,831. 10,842. 8,865.1 8,874.38 Z-21A 2/24/09 APF 10,915. 10,925. 8,936.71 8,945.36 AB ABANDONED PER PERF ' APF ADD PERF RPF REPERF BPP BRIDGE PLUG P ULLED SL SLOTTED LINER BPS BRIDGE PLUG SET SPR SAND PLUG REMOVED FCO FILL CLEAN OUT SPS SAND PLUG SET FIL FILL SQF SQUEEZE FAILED MIR MECHANICAL ISOLATED REMOVED SQZ SQUEEZE MIS MECHANICAL ISOLATED STC STRADDLE PACK, CLOSED MLK MECHANICAL LEAK STO STRADDLE PACK, OPEN OH OPEN HOLE • -~J Z-21A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY I ACTIVITYDATE I SUMMARY I 2/24/20091**"RST-SPINNER LOG, ADPERF**'` WELL FLOWING ON ARRIVAL INITIAL T/I/O = 240/1620/160. RIG UP E-LINE, SHUT-IN WELL AT WING, ALSO SHUT IN GAS LIFT AND `CHEM INJECTION. LRS FREEZE PROTECTED FLOW LINE. RIH WITH 2.125" MAX OD RST AND SPINNER TOOLS. TAG TD AT 11034'. NO FIELD GOC PICK. PERFORATE WITH 2.00" POWERJET OMEGA HMX, 6 SPF, 60 DEG PHASING. PENETRATION = 21.8", ENTRANCE HOLE = 0.22". TIED INTO RST FROM 1ST RUN. GUN 1: PERFORATED INTERVAL = 10915' - 10925'. POOH AND PREPARE SECOND GUN. ***JOB CONTINUED ON 25-FEB-2009*'"* 2/25/2009 '`*'`JOB CONTINUED FROM 24-FEB-2009"'`* RST, ADPERFS T/I/O = 500/1500/160. RIH WITH GUN #2, MAX OD = 2", LENGTH = 29'. PERFORATE WITH 2.00" ~POWERJET OMEGA HMX, 6 SPF, 60 DEG PHASING. PENETRATION = 21.8", ENTRANCE HOLE = 0.22". TIED INTO RST FROM 1ST RUN. GUN 2: PERFORATED INTERVAL = 10831' - 10842'. PAD OP NOTIFIED OF VALVE POSITIONS ON DEPARTURE. WELL LEFT SHUT IN. FINAL T/I/O: 500/1500/160. ***JOB COMPLETE*** FLUIDS PUMPED BBLS 1 DIESEL 5 NEAT 205 CRUDE 211 Total Safety Valve & Well Pressures Test Report Reviewed B~_(ZL~,~~. Y.I. Sultrv _~" z Comm Pad: PBU_Z InspDt: 2/11/2008 Inspected by Lou Grimaldi Interval tnsprvo svsLG080213084453 Related [nsp: Field Name PRUDHOE BAY Operator BP EXPLORATION (ALASKA} 1NC Operator Rep Chuck Wyatt Reason Miscellaneous _ _ Src: Inspector ~ ----~------- ----- -r- -----~------- ---- ~- _ ~ f ~ . ------ WelEData Pilots _ ~SSV~ S"SSV fShutln Dt~ WeII Type j Well Pressures Gas Lr Waiver Comments ~ Well Permit Separ Set UP Test Test Test Date SI Oi1,WAG,GINI, inner Outer 'Cubing Number Number PSi PSl Trip Code Code Code GAS.CYCLE_ SI Pst act uc~ v..ani., v....iv.. Z-13 1900940 r- Z 20 -1881000 _ ___ Z-21A 2001010 163 125 - 163 125 _ 163 125 125 110 120 P P P P _r- t-OIL---T 1680 i SOU 1-260 ---- Yes ~ No -- - P _ t-OlL i-.-- --,----- ----- ~ --- __ _ _ ~ 1300 620 ~ 280 Yes ~ No P i-OIL~540 200 260 Yes No ----- - -- --------.~-I -..--- --- - -- _.-_.-.--~ Z-26A j 20607)0 ----- -- -------L- -°- 16301 125 ----------' ll5 P - - P l-0IL 1660 660 200 Yes ~- No - ---- -- - -------~--~ -~ I ~ ~ ------------- ~ Comments - ---__--_.__J Performance Wells Components Failures Failure Ratc i ,/ ~ -4 ---8 --- ~-- i ~---. ---- --------_- ---- - - I • Thursday, February l4, 2008 Schlumbel'gep Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503·2838 ATTN: Beth Well W-19AL 1 17-19A V-04 Z-21A Z-03 05-38 Y -29A B-16 Z-22B Z-14B P2-45A 17 -09 F·33 4-08/P-27 3-17F/K-30 MPB-50 S-125 Job# 11890312 11855512 11855513 11594526 11767142 11686787 11855514 11676969 11594525 11849935 11594529 11846820 11661176 11630506 116499&1 40011604 40015467 5'gANNED OCT 312007 Log Descrr bon SBHP & TEMP ;:)",:4 -:::)~" SBHP SURVEY I C\?- ~ f)ç:o: ~ SBHP SURVEY .;..JOec, - l~<'-I SBHP SURVEY ~) -I () I LDL I C; "+--f'::f I LDL I CJð - J -srç DDL lC,{~ - rPì/ PRODUCTION PROFILE {/-j -DdS SBHP SURVEY - ;"SoMk r<^ ~ SBHP SURVEY .;J()(o-cAt:: SBHP SURVEY J C; <} -I¥-I(.! LDL /1rI- 6CJ [) MEMORY SBHPS I q~ - ("Ú~ LDL ,)"'1:l' 115"1-- - bD'7< MCNL ..::Jt>"?. -::lIt" -tt 1¿ç(~/L{ OH MWD/LWD EDIT () I (\ 'é'lN..i - :x:::;) 151/1/~'<, OH MWD/LWD EDIT ..?D~-D"i53 It ,S"G,,;:¡ PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date Delivered: Date 09129107 09126107 09127/07 10107107 10101107 09/27/07 09128107 10112107 10106107 10/02/07 10116107 10/19/07 10119/07 10104107 04117107 02/27/05 07/14/07 NO. 4464 Company: State of Alaska Alaska Oil & Gas Cons I~omm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: P.Bay, Endicott, Aurora, Milne Pt., pt. Mac BL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 Color CD 1 1 1 Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-28 8 ATTN: Beth I Received by: 10/25107 . . · ...AØ . STATE OF ALASKA . ~-Q~ RECEIVED AL,A! OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS FEB 0 1 Z007 1. Operations Abandon D RepairWell D Plug Perforations D S'm"1ate0 iif ~ . . Performed: Alter Casing D Pull Tubing D Perforate New Pool D WaiverD Tim~~~s ~ ø~ f:U f~. EUlIJlfIISSIGr Change Approved Program D Operat. Shutdown D Perforate D Re-enter Suspended Well nchorage 2. Operator BP Exploration (Alaska), Inc. 4. Current Well Class: 5. Permit to Drill Number: Name: Development R Exploratory 200-1010 3. Address: P.O. Box 196612 Stratigraphic Service 6. API Number: Anchorage, AK 99519-6612 50-029-21938-01-00 7. KB Elevation (ft): 9. Well Name and Number: 85.12 KB PBU Z-21A I 8. Property Designation: - 10. Field/Pool(s): / ADLO-028262 PRUDHOE BAY Field/ PRUDHOE OIL Pool 11. Present Well Condition Summary: Total Depth measured 11145 ~ feet Plugs (measured) 11 040' true vertical 9140.81 feet Junk (measured) None Effective Depth measured 11040 feet true vertical 9047 feet Casing Length Size MD TVD Burst Collapse Conductor 110' 20" Surface - 110' Surface - 110' Surface 2620' 13-3/8" 68# L-80 Surface - 2657' Surface - 2657' 4930 2270 Production 9879' 9-5/8" 47# NT80S Surface - 9916' Surface - 8110' 6870 4760 Liner 714' 7" 26# L-80 9744' - 10458' 7982' - 8552' 7240 5410 Sidetrack liner 836' 4-1/2" 12.6# 13CR 1 0309' - 11145' 8427' - 9141' 8430 7500 SCANNED FEB 0 .., 20D7 ! Perforation depth: Measured depth: 10858 - 10868 - - - - True Vertical depth: 8887.93 - 8896.43 - - - - Tubing: (size, grade, and measured depth) 3-1/2" 9.2# 13-cr - 10309' Packers and SSSV (type and measured depth) 9-5/8"x7" ZXP 9744' 7"X4-1/2" SABL-3 1 0260' 7"X4-1/2" ZXP 1 0309' 3-1/2" HES X Landing nipple 2209' 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: 55 240 191 0 296 Subsequent to operation: 52 250 574 0 266 14. Attachments: 15. Well Class after proposed work: Copies of Logs and Surveys Run Exploratory Development R Service Daily Report of Well Operations X 16. Well Status after proposed work: Oil R Gas r WAG r GINJ r WINJ r WDSPL 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. ìSUndry Number or N/A if C.O. Exempt: Contact Gary Preble Printed Name Gary prebf ./"'\ II Title Data Engineer Signature xJ I/J/h /d it, ~/ Phone 564-4944 Date 12/29/2006 Form 10-404 Revised -64/2004 ff'. 'i 'r¡ ---,; ð- r" Submit Original Only RaDM~ BFl tJ 4+' ZOO, 15 . . . Z-21A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY 12/17/2006 = 1660/540/80 - Load IA and Tubing - Loaded IA w/420 bbls crude. Loaded TBG w/56 bbls crude. FWP's = 1460/480/60 ontinue Rig Up for Acid flowback 12/1 C Post Acid Flowback, Standby for CTU C Post Acid Flowback, standby for CTU and GC-2 G/L _'___'_m___,n_^V.V.·.w'um~'nm'.'n 12/22/2006 ASRC Post Acid flowback, standby for CTU and GC-2 G/L .~'""....'""_'w__,__,_ ~~,""~~","~"'",' ,,',,""..'wwmv 12/22/2006 #5 *** Job Scope FCO/Mud Acid*** MIRU ...Continue job on 12/23/2006... 1 - 720/1500/1 00 ***Pre Acid Flowback*** Loaded IA w/420 bbls crude. Loaded tubing w/ 40bbls crude. *** Job continued on 12/23/06 WSR *** assist for Acid Job #5 Scale Removal/Acid Treatment ***Continue job from 12/22/2006*** RIH bottom @ 11051' PUH 20' paint flag. Place NH4CL from 10000' to 11000' PU and eirc. ***Continue on 12/24/2006*** 12/23/2006 *** Job continued from 12/22/06 WSR *** Post load IA and TBG freeze protect. Freeze protect hardline and flowline w/8 bbls neat meth. FWP's = 2300/850/120 12/24/2006 CTU #5 Acid Treatment **** Pump and recipricate across perfs at 10858' to 10905' total 150 bbls 3% NH4CL +100bbls 90:10 DAD 12% HCL + 48 bbls 9:1 Mud + 100 bbls NH4CL for over displacement - pump rate 1 bpm - w/ 1581 whp DAD in perfs - pump rate 1.6 bpm - w/ Mud Acid in perfs/ 834 whp - pump rate -0.6 bpm w/ 1650 whp with 3% NH4CL in perfs - POH - FP coil and backside- RDMO **** Job Complete **** **** Notify PCC/PO well ready for acid flowback up thru ASRC Test Sep **** .~ . . FLUIDS PUMPED BBLS 62 1 % KCL 70 60/40 METHANOL 184 NH4CI 100 DAD ACID 48 9:1 MUD ACID 50 15 ppb SODA ASH 514 TOTAL "::' l-;~ f~ j l/ ~~: Ù Schlumberger FEB 2 tt_ Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth þ;:;¿~~~~ ·_·u; ¡ 11 fJ;;j.~JOj ¡ Well Job# Log Description Date BL 13-31 A .;)05 - ¡lDO 11162828 MEM JEWELRY & PRESSURE SURVEY 01/07/06 1 DS 18-03B -90 S - OF,(,., 11057071 SBHP SURVEY 12102/05 1 NK-43 r{J()f-DO I 10987562 SBHP W/SPINNER PASSES 01/07/06 1 B-13A /ctC¡ - 057 11183463 LEAK DETECTION LOG 01/28/06 1 DS 06-22A Iq,~·~c57 N/A SENSAlMEM LDL 01/28/06 1 DS 11-26 Ißw'~ 134- 11183462 INJECTION PROFILE 01/28/06 1 P1-09 J 9 t& .. /5 ~ 11098756 PROD PROFILE W/DEFT & GHOST 01/30/06 1 L5-05 )~7-C(c9· 11058541 RST 11/11/05 1 Z-29 ¡ef1 -C(r-Ç" 11051081 RST 08/10/05 1 L5-09 /C¡C - {~ 11090725 RST 11/11/05 1 15-44 ,qú: - I , () 11194155 RST 01/15/06 1 C-20B -¥O{-I/4- 11075913 MCNL 08/29/05 1 02-14A Q03 ~ 1';<5 11075901 MCNL 07/29/05 1 Z-21 A -9ð 0- ìð f 11076449 RST 06/30/05 1 F-27 A d05-/a4- 10928641 MCNL 09/01/05 1 MPH-15 .f)c6 -/5'1 11076486 USIT 12/15/05 13-31 A -:::)05-llßD 11133211 SCMT 12/23/05 WGI-04 } 7'1 - cSD 11183461 USIT 01/26/06 WGI-04 nCf -C'Sê) 11211566 US IT 02/03/06 WGI-08 IqC'" O¥1 10987559 USIT 01/02/06 WGI-08 ¡qð - C4'1 11058259 USIT 01/12/06 BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 @ct~~NEt); FE B €ì q 200ß tc¿ Ü' Date Delivered: :?/} ,-:)? lOG I 02/09/06 NO. 3677 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Helen Warman 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Color CD ~ 1 1 1 1 1 1 1 1 .- Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 :::v~e:y 6~Qr~ö ) ) ') MICROFILMED 04/01/05 DO NOT PLACE ANY NEW MATERIAL UNDER THIS PAGE F:\LaserFiche\CvrPgs _ I I1serts\M icroft 1m _ Marker.doc Permit to Drill 2001010 MD 11145 j TVD // DATA SUBMITTAL COMPLIANCE REPORT 411612003 Well Name/No. PRUDHOE BAY UNIT Z-21A Operator BP EXPLORATION (ALASKA) INC 9141 ~ Completion Dat 311112001 - Completion Statu 1-OIL Current Status 1-OIL ~,/~, APl No. 50-029-21938-01-00 UIC N REQUIRED INFORMATION Mud Log N._~o Sample N_.~o Directional Survey DATA INFORMATION Types Electric or Other Logs Run: Well Log Information: Log/ Data Digital Digital Type Media ~. Fret Log Log Run Name Scale Media No Interval Start Stop (data taken from Logs Portion of Master Well Data Maint) OH I Dataset CH Received Number Comments IR~''~- Ver LIS Verification ~ Ver LIS Verification D MWD Survey Report R MWD Survey Report !1~.,~- ~ ~ and Jewelery 5 IL L ~ CBL/Jewelry 5 iL L ~' CBL/Jewelry 5 I.L--~' / ~ra'~yay Induction 2/5 ..E/ ~B'~orehole Comp/Sonic 2/5 ~____~ ~ tP0q~ubsea 2/5 ~ 10152 Cn See Notes I I i t I 9647 11098 Open 10250 11145 Open 1 9647 11098 Open FINAL 9911 11145 FINAL 9911 11145 ,4J3-1-7-,~5--~10867 CH FINAL 10100 11052 ch FINAL 10100 11052 ch FINAL 10250 11144 CH FINAL 10250 11144 CH FINAL 10250 11144 CH FINAL 10250 11144 CH FINAL 10250 11145 OH I 9655 11145 Open 5~24~2002 6/2212001 5~24~2OO2 1/9/2001 1/912001 .."2/26/2001 3/23/2001 3/23/2001 6/22/2001 6/22/2001 6122/2001 6/22/2001 6/22/2001 12/13~2002 10152~'~'~50-11145 10857~' C, ~~- 9911-11145 Digital Data 9911-11145 Paper Copy ~ 75-10867 Color Print 10100-11052 Color Print 10100-11052 Color Print 10250-11144 BL, Sepia 10250-11144 BL, Sepia 10250-11144 BL, Sepia 10250-11144 BL, Sepia 10250-11145, Digital Data Digital Well Logging Data / Rate of Penetration, Dual Gamma Ray, Electromagnetic Wave Resistivity Well Cores/Samples Information: Name Start Interval Stop Sent Dataset Received Number Comments ADDITIONAL INFORMATION Permitto Drill 2001010 DATA SUBMITTAL COMPLIANCE REPORT 4/16/2003 Well Name/No. PRUDHOE BAY UNIT Z-21A Operator BP EXPLORATION (ALASKA) INC MD 11145 TVD 9141 Well Cored? Y ~.~ Chips Received? ~ Analysis ~ Re. ceived? Completion Dat 3/11/2001 Completion Statu 1-OIL Current Status 1-OIL Daily History Received?- ~)/N Formation Tops l~ N APl No. 50-029-21938-01-00 UIC N Comments: Compliance Reviewed By: Date: /? (' STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown_ Stimulate_ Plugging _ Perforate _X ADD PERFS Pull tubing_ Alter casing_ Repair well _ Other_ 2. Name of Operator BP Exploration (Alaska), Inc. 3. Address P. O. Box 196612 Anchora~le, AK 99519-6612 4. Location of well at surface 719' FNL, 3283' FEL, Sec. 19, T11N, R12E, UM At top of productive interval 1337' FNL, 2913' FEL, Sec. 18, T11N, R12E, UM At effective depth 1214' FNL, 2752' FEL, Sec. 18, T11N, R12E, UM At total depth 1182' FNL, 2718' FEL, Sec. 18, T11N, R12E, UM 5. Type of Well: Development mX Exploratorym Stratigraphicw Servicem (asp's 599390, 5959360) (asp's 599680, 5964026)~ (asp's 599839, 5964151) (asp's 599872, 5964183) 6. Datum elevation (DF or KB feet) RKB 85 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-21A 9. Permit number / approval number \'~1 200-101 0. APl number 50-029-21938-01 11. Field / Pool Prudhoe Bay Field / Prudhoe Bay Pool' 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Length Conductor 110' Surface 2620' Intermediate 9879' Liner 714' Sidetrack Liner 836' 11145 feet Plugs (measured) 9141 feet 11040 feet Junk (measured) 9047 feet Tagged TD @ 11040' (01/01/2003) Size Cemented Measured Depth True Vertical Depth 20" 72 c.f. Concrete 147' 147' 13-3/8" 3684 c.f. Permafrost 2657' 2657' 9-5/8" 2268 c.f. Class 'G' 9916' 8110' 7" 197 c.f. Class 'G' 9744' - 10458' 7982' - 8552' 4-1/2" 157 c.f. Class 'G' 10309' - 11145' 8427' - 9141' Perforation depth: measured Open Perfs 10858'-10868', 10868'-10876', 10887'-10905' R CE]VED true vertical Open Perfs 8888'-8896', 8896'-8903', 8913'-8928' Tubing (size, grade, and measured depth) Packers & SSSV (type & measured depth) 3-1/2", 9.2#, 13-0R Tubing @ 10309' MD. 3-1/2" Tubing T~i~'~,~t~ ~Cons. gonlmtssion Anch0~age 9-5/8" x 7" Baker ZXP LNR Top Packer ~ 9744'. 7" x 4-1/2" Baker SABL-3 Packer ~ 10260'. 7" x 4-1/2" Baker ZXP Packer ~ 10309' MD. 3-1/2" HES X Landing Nipple ~ 2209' MD. 13. Stimulation or cement squeeze summary Intervals treated (measured) (see attached) Treatment description including volumes used and final pressure 14. OiI-Bbl Prior to well operation 02/09/2003 149 Subsequent to operation 02/23/2003 222 Representative Daily Averaqe Production or Injection Data Gas-Md Water-Bbl 299 75 665 304 Casing Pressure Tubing Pressure 297 3O8 15. Attachments Copies of Logs and Surveys run Daily Report of Well Operations 16. Status of well classification as: Oil _X Gas _ Suspended Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. ~ .~' Title: Technical Assistant , DeWayne Form 10-404 Rev 06/15/88 Date February 24, 2003 Prepared by DeWayne R, Schnorr 564-5174 SUBMIT IN DUPLICATE Z-21A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS 12/06/2002 TESTEVENT---BOPD: 156, BWPD: 78, MCFPD: 1,863, AL Rate: 1,590 12/31/2002 PERFORATING: DRIFT/TAG 12/31/2002 PERFORAIING: HOT OIL TREATMENT 01/01/2003 PERFORATING: DRIFT/TAG 02/17/2003 PERFORATING: PERFORATING 02/17/2003 PERFORATING: HOT OIL IREAIMENI EVENT SUMMARY 12/06/02 TESTEVENT---BOPD: 156, BWPD: 78, MCFPD: 1,863, AL RATE: 1,590 12/31/02 <<< WELL FLOWING UPON ARRIVAL >>> ATTEMPTED TO DRIFT W/2.5" x 10' DRIFT, SAT DOWN @ 1097' SLM (SAMPLE BAILER CAME BACK W/THICK SCHMOO). RIG DOWN DUE TO NO PUMPS AVAILABLE. <<< NOTIFIED PAD OPERATOR TO POP WELL >>> 12/31/02 HOT OIL TUBING WITH 80 BBLS. D.C. @ 180 DEGREES FOLLOWED BY 10 BBLS DIESEL INT. T/I/O= 1050/1000/110. Final T/I/O= 1100/1140/110. 01/01/03 <<< WELL SHUT IN UPON ARRIVAL >>> TAGGED BOTTOM W/2.5" DUMMY GUN (10' LONG) @ 11040' SLM. (HARD BOTTOM). <<< NOTIFIED PAD. OPERATOR TO POP WELL >>> 02/17/03 PUMPED HOT OIL DISPLACEMENT FOR E-LINE. 02/17/03 PERFORATED INTERVAL #1: 10887'- 10905' WITH 2.5" PJ, 6 SPF, 60 DEG PHASE. PERFORATE INTERVAL #2: 10868' - 10876' WITH 2.5" PJ, 6 SPF, 60 DEG PHASE. DEPTH REFERENCED TO SCHLUMBERGER CBL'DATED 3-5-2001'. PAD OPERATOR NOTIFIED - WELL LEFT SHUT IN. Fluids Pumped BBLS 2 DIESEL FOR SURFACE PRESSURE TEST OF EQUIPMENT (2 TESTS) 10 DIESEL 170 DEAD CRUDE 182 TOTAL ADD PERFS 02/17/2OO3 THE FOLLOWING INTERVALS WERE PERFORATED USING THE 2.5" P J, 6 SPF, 60 DEGREE PHASING, RANDOM ORIENTATION. 10868' - 10876' 10887' - 10905' Page 1 To: WELL LOG TRANSMITTAL State of Alaska Alaska Oil and Gas Conservation Comm. Attn.' Lisa Weepie 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 June 04, 2002 MWD Formation Evaluation Logs · Z-21A, AK-MM-00265 Z-21A: Digital Log Images 50-029-21938-01 1 CD Rom PLEASE ACKNOWLEDGE RECEiPT BY SIGNING AND RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Sperry-Sun Drilling Services Attn: Jim Galvin 6900 Arctic Blvd. Anchorage, Alaska 99518 BP Exploration (Alaska) Inc. Petro-technical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date: RECEIVED DEC 13 2002 Alaska O[~ & Gas Cons. Commission Anchorage WELL LOG TRANSMITTAL To: State of Alaska May 14, 2002 Alaska Oil and Gas Conservation Comm. Attn.: Lisa Weepie 333 West 7~ Avenue, Suite 100 Anchorage, Alaska RE: MWD Formation Evaluation Logs Z-21. A, AK-MM-00265 1 LDWG formatted Disc with verification listing. API#: 50-029-21938-01 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Sperry-Sun Drilling Services Attn: Jim Galvin 6900 Arctic Blvd. Anchorage, Alaska 99518 BP Exploration (Alaska) Inc. Petro-Technical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date: RECEIVED 2 4 2002 madmO l&GasCen .C R U IV U STATE OFALASKA JUN g 8 Z001 ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATION8 sk'°i & G,, Con,. Commissi0n 1. Operations performed: CBL Log, Perfs, Acid Stim operation shutdown_ Stimulate _X Plugging _ Perforate _X Pull tubing _ Alter casing _ Repair well _ Other_X 2. Name of Operator BP Exploration (Alaska), Inc. 3. Address P. O. Box 196612 Anchorage, AK 99519-6612 4. Location of well at surface 719' FNL, 1669' FWL, Sec. 19, T11N, R12E, UM At top of productive interval 3943' FSL, 2020' FWL, Sec. 18, T11 N, R12E, UM At effective depth 1206' FNL, 2188' FWL, Sec. 18, T11N, R12E, UM At total depth 1181' FNL, 2214' FWL, Sec. 18, T11 N, R12E, UM 5. Type of Well: Development _X Exploratory_ Stratigraphic~ Service_ (asp's 599390, 5959560) (asKs n/a) (asKs 599846, 5964159) (asKs 599~72, 5964185) 6. Datum elevation (DF or KB feet) RKB 85 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Z-21A 9. Permit number / approval number 200-101 10. APl number 50-029-21938-01 11. Field / Pool Prudhoe Bay Oil Pool 12. Present well condition summary Total depth: measured true vertical 11145 feet 9141 feet Effective depth: measured 11063 feet true vertical 9067 feet Plugs (measured) Casing Length Conductor 110' Surface 2620' Production 9879' Liner 714' Sidetrack Liner 836' Junk (measured) Window milled in 9-5/8" @ 9916' - 9934'. Abandoned old borehole from 9916' and down. TD Tag @ 11063' (06/10/2001). Size Cemented Measured Depth True Vertical Depth 20" 72 c.f. concrete 147' 147' 13-3/8" 3684 c.f. Permafrost 2657' 2657' 9-5/8" 2268 c.f. Class 'G' 9916' 8110' 7" 197 c.f. Class 'G' 9744' - 10458' 7982' - 8552' 4-1/2" 157 c.f. Class 'G' 10309' - 11145' 8427' - 9141' Perforation depth: measured Open Perfs 10858' - 10868' true vertical Open Perfs 8888' - 8896' Tubing (size, grade, and measured depth) 3-1/2", 9.2#, 13-CR TBG @ 10309' MD. Tubing Tail @ 10319'. Packers & SSSV (type & measured depth) 9-5/8" x 7" Baker ZXP LNR Top Packer @ 9744'. 7" x 4-1/2" Baker SABL-3 Packer @ 10260'. 7" x 4-1/2" Baker ZXP Packer @ 10309'. 3-1/2" HES X Landing Nipple @ 2209'. 13. Stimulation or cement squeeze summary Intervals treated (measured) (see attached) Treatment description including volumes used and final pressure 14. Prior to well operation Subsequent to operation OikBbl Representative Daily Average Production or Injection Data Gas-Md Water-Bbl Casing Pressure Tubing Pressure 15. Attachments Copies of Logs and Surveys run _ Daily Report of Well Operations _ 16. Status of well classification as: Oil __X Gas __ Suspended Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. DeWayne R. Schnorr Form 10-404 Rev 06/15/88 · ORIGINAL Date June 22, 2001 Prepared by DeWayne R. Schnorr 564-5174 SUBMIT IN DUPLICATE Z-21A Description of Work Completed NRWO OPERATIONS 01/01/2001 01/07/2001 01/11/2001 02/04/2001 03/04/2001 03/05/2001 03/05/2001 03/11/2001 03/17/2001 03/22/2001 06/10/2001 06/14/2001 DRILL-POST WORK: GASLIFT/PULL RHC (POST RIG) DRILL-POST WORK: DRIFT W/2.5 DUMMY GUN ( POST CTD PERF ) DRILL-POST WORK: DRILL-POST WORK: DRILL-POST WORK: DRILL-POST WORK: DRILL-POST WORK: DRILL-POST WORK: DRILL-POST WORK: DRILL-POST WORK: DRILL-POST WORK: ANN-COMM: TIFL CEMENT BOND LOG - JEWELRY PASS D/T - OBTAIN SAMPLE (POST RIG) FCO CEMENT BOND LOG--JEWLERY LOG PUMP METHANOL DOWN I.A. PERFORATE 2.5 POWERJET @ 6 SPF STATIC SURVEY (POST DRLG) RUN STATIC ACID STIM SUMMARY 01/01/01 PULLED DROPPED GENERIC GLV FROM RHC, SET IN GLM # 6 W RK LATCH THEN PULLED RHC PLUG 01/07/01 DRIFTED TUBING W/2.5 DUMMY GUN AND T.E.L. UNABLE TO LOCATE T.T. TAGGED @ 10875' SLM. 01/11/01 SCMT- BOND LOG - FOUND TD AT 10874' ELM - TOP OF CEMENT AT 10317 FT AT LINER TOP - LOWER CEMENT QUESTIONABLE. 02/04/01 RAN 2.25" PUMP BAILER TO 10,875' WLM & OBTAINED SAMPLE OF WHAT LOOKS LIKE WET BARITE AND/OR WET CEMENT. WILL TURN SAMPLE IN FOR ANALYSIS IN THE AM. 03/04/01 MIRU DS CTU #5. DRIFT COIL (AFTER BUTT WELD TO REPAIR DIMPLED PIPE). PU 2.5" DOWN JET NOZZLE & DCV'S. RIH AND CLEAN OUT DOWN TO TD, 11,063' CTM; FRZ PROTECT TO 2500' WITH 60/40 [FCO] 03/05/01 RUN SCMT & JEWELRY LOG ***WELL READY FOR UNDERBALANCING AND ADPERFS*** 03/05/01 PUMPED 20 BARRELS 50/50 MEOH. DOWN INNER ANNULUS. TURNED WELL OVER TO PAD OPERATOR. 03/11/01 RUN 2 1/2 POWERJJET- SHOT @ 6 SPF TOTAL OF 61 SHOTS** PERF INTERVAL WAS 10858 TO 10868 IA PRESS. 1600 LB--OA PRESS 100LB-- TUBING PRESS 1800-- ***PAD OPR CONTACTED AND POP'D WELL*** 03/17/01 WELL SI 03/12/01 @ 11:00 AM. RAN STATIC SURVEY MAKING STOPS @ (8700-8800-8900 TVD'S) & STOP @ TD 11,037' SLM. PRESSURE DROPPED 13 PSI IN I HOUR) ---LWSI FOR FURTHER EVALUATION--- 03/22/01 RUN STATIC GAUGES TO SPECIFIED DEPTHS ( 8700', 8800, 8900' TVD'S) GOOD READINGS ( GAVE WELL BACK TO PAD OP, LEFT SHUT IN ) 06/10/01 MIRU DOCT #5, APC TEST SEPERATOR, AND DS ACID VAN. RIH W/2.5" JSN. TAG BOTTOM AT 11063' CTM, LOAD WELL W/90 BBLS SW, DISPLACE ADDITIONAL 50 BBLS ON FORMATION. PUMP 10 BBL XYLENE-10% MUSOL, 24 BBLS 10% 80/20 DAD, 48 BBLS 8/2 MUD ACID, OVERFLUSH W/48 BBLS NH4CL. INITIAL INJECTION OF .4 BPM, 2500 PSI WHP. FINAL INJECTION OF 1.8 BPM, 2200 PSI WHP. POH. SECURE WELL AND FLOWBACK THRU APC SEPERATOR. 06/14/01 TIFL PASSED. T/I/O =220/1000/120. TEMP=69. FMC. TIFL PASSED ( PRE ACID). TOOK 2 SAMPLE FOR DOWELL LAB. SI WELL, LEFT GAS LIFT ON FOR 45 MINS TO BUILD TBG PRESSURE. INITIAL IA FL @ 5120'. BLED IA FROM 1190 PSI TO 440 PSI IN 2 HOUR. SI BLEED AND MONITOR FOR 30 MINS. NO INCREASE IN IA PRESSURE. POST IA BLEED FL @ 5146'. POP WITH GAS LIFT. FINAL WHP'S=1460/440/120. Fluids Pumped BBLS. Desoription 5 PRESSURE TEST LUBRICATOR W/DIESEL 210 1% KCL WATER (DOUBLE SLICK) 169 60/40 METHANOL 20 50/50 METHANOL. 15 1.5# BIO 10 XYLENE W/10% MUSOL 24 10% HCL (80-20 DAD) 48 8-2 HCL/HF MUD ACID 48 3% NH4CL 200 SLICK SALT WATER 419 TOTAL ADD PERFS 03/11/2001 SUMMARY The following interval was perforated using 2-1/2" HSD Power Jet gun, 6 SPF 60 degree phased, random orientation. 10858' - 10868' MD STATE OF ALASKA ALASK ~JIL AND GAS CONSERVATION COM ,oSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Status of Well Classification of Service Well [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number BP Exploration (Alaska)Inc. 200-101 3. Address 8. APl Number P.O. Box 196612, Anchorage, Alaska 99519-6612 50- 029-21938-01 ~' ., .... .-..;...,- -.-., 4. Location of well at surface ~ ..... .:,.,.- :,.~;i ....... 9. Unit or Lease Name 719' SNL, 1669' EWE, SEC. 19, T11N, R12E, UM ,. --.., .~ 'LOC. AT .l(]~' Prudhoe Bay Unit At top of productive interval i _.~._.//.. ~../_ 3943'At totalNSL'depth2020' EWE, SEC 18, T11N, R12E 10. Well Number 4097' NSL, 2214' EWE, SEC 18, T11N, R12E ~..:.'.:.- ................ I:~.F,~~ l.' Z-21A ..... "~"*'*'"" 11. Field and Pool 5. Elevation in feet (indicate KB, DF, etc.) !6. Lease Designation and Serial No. Prudhoe Bay Field / Prudhoe Bay Pool KBE = 85.12' ADL 028243 12. Date Spudded 12/6/2000 113' Date T'D' Reached 114' Date C°mp'' Susp'' °r Aband' 1 2/10/2000 3/11/2001 115' water depth' if °ffsh°re N/A MSL I' 16. No. of Completions One 17. Total Depth (MD+TVD) 118. Plug Back Depth (MD+TVD) 119. Directional Survey ~ 20. Depth where SSSV set1 21. Thickness of Permafrost 11145 9141 FTI 11063 9067 FTI []Yes I-INoI (Nipple) 2209' MDI 1900' (Approx.) 22. Type Electric or Other Logs Run MWD, GR, RES, NEU, DEN, Sonic, RES/AlT, DT/BHC, CNL, LDL, GR, Caliper, SP, MRES 23. CASING, LINER AND CEMENTING RECORD CASING SETTING DEPTH HOLE SIZE WT. PER FT. GRADE TOP BOTTOM S~ZE CEMENTING RECORD AMOUNT PULLED 20" Conductor Surface 110' 13-3/8" 68# L-80 Surface 2657' 17-1/2" 3684 cu ft Permafrost 9-5/8" 47# NTBOS Surface 9916' 12-1/4" ~_268 cuft Class 'G' 7" 26# L-80 9744' 10458' 8'1/2" 197 cuft Class 'G' 4-1/2" 12.6# 13-Cr 10309' 11145' 6" 157 cu ft Class 'G' 24. Perforations pp. en to, P.roducti.on (M,D+.TVD of Top and 25. TUBING RECORD Bottom and ~nterva~, raze Bna number) ' SIZE DEPTH SET (MDi' PACKER SET (MD) 2-1/2" Gun Diameter, 6 spf 3-1/2", 9.2#, 13Cr80 10322' 10260' MD TVD MD TVD 10858'- 10868' 8888'-8896' 26. AC~D, FRACTURE, CEMENT SQUEEZE, ETc. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED Freeze Protect with 154 bbls Diesel 27. PRODUCTION TEST Date First Production Method of Operation (Flowing, gas lift, etc.) .. March 27, 2001 Gas Lift Date of Test Hours Tested PRODUCTION FOR OIL-BeE GAS-MCF WATER-BeE CHOKE SIZE ~ GAS-OIL RATIO'~'. TEST PERIODI[, .,~,., · ~ ~ ~-. Flow Tubing 3asing Pressure CALCULATED OIL-BeE GAS-MCF WATER-BeE OIL GRAVITY-APl' (CORE) Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. ~'~1 APR ~. 7 2001 A~aska Oil & Gas Cons. Commissior~ Form 10-407 Rev. 07-01-80 ., .I ' "*~"'~"~ubmlt In ORI [~','~[~'''I '~:i I ...... ' ' Duplicate ,,.,. "<~ /,,~" '" ~.~ (" 29. Geologic Markers 30. Formation Tests Marker Name Measured True Vertical Include interval tested, pressure data, all fluids recovered Depth Depth and gravity, GOR, and time of each phase. Sag River 10457' 8551' Shublik 10484' 8574' Sadlerochit / Zone 4A 10654' 8718' Zone 4B 10829' 8863' Zone 3 10878' 8905' Zone 2C 10947' 8964' ~Zone 2B 11046' 9052' APR 7 2001 Alaska Oil & Gas Cons. Commission Anchorage . 31 Li~ of Affachmen~: Summa~ of Daily Drilling Repo~s, Suweys 32. I hereby ce~i~ that the foregoing is true and correct t° the best of my knowledge Signed ,errieHubble ~~_ ~ Title TechnicalAssista,t Date Z-21A 200-101 Pre~r~ By Nam~Numben Terde Hubble, 5~-4628 Well Number Permit No. / Approval No. 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. ITEM 1: Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. ITEM 5: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. ITEM 16 AND 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. ITEM 21: Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). 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 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, Other-explain. ITEM 28: If no cores taken, indicate 'none'. Form 10-407 Rev. 07-01-80 ORIGINAl ......... BP EXPLORATION Page 1 of 5:. Operations Summa Report Legal Well Name: Z-21 Common Well Name: Z-21A Spud Date: 4/19/1989 'Event Name: REENTER & COMPLETE Start: 12/1/2000 End: 12/14/2000 Contractor Name: NABORS Rig Release: 12/14/2000 Group: RIG Rig Name: NABORS 7ES Rig Number: ... . Sub Phase DesCription of Operations Date From-To Hours Task Code 11/30/2000 00:00 - 03:00 3.00 MOB PRE PJSM,R/D Floor, Disconnect Hoses & Lines to Pits, UnPin TD, L/D Cattle Chute, Remove Hand Rails & Steps, Move Camp & Pits From M17A to Z21A 03:00 - 06:30 3.50 MOB PRE PJSM, Remove Pins, Lower Derrick, Lift Cellar Doors, PUll Off of Well 06:30 - 16:30 10.00 MOB PRE . Move Sub Base From M Pad to Z Pad, Crossed Kuparuk River Bridges 16:30 - 19:00 2.50 MOB PRE Lay Rig Mats, Spot Sub Over Z21A 19:00 - 22:00 3.00 MOB PRE Set Shop & Pits, Replace Flowline, Set Camp 22:00 - 00:00 2.00 MOB ' PRE PJSM; Raise Derrick & Pin, Pin Cattle Chute ,12/1/2000 00:00- 04:30 4.50 MOB PRE R/U, Drlg Unit 04:30 - 05:00 0.50 MOB PRE Pre Spud Safety Mtg, Review Check List 05:00 - 07:30 2.50. WHSUR DECOMP N/U Secondary Annulus Valve on Wellhead, R/U For Circ 07:30 - 09:00 1.50 WHSUR DECOMP Pull TWC With Lubricator, Had to Steam Wellhead to Melt Ice, Plug in Same 09:00 - 15:30 6.50 WHSUR DECOMP Displace Diesel Freeze Protection & Seawater to 8.8 ppg NaCI Brine @ 4.5 BPM @ 350 psi 15:30 - 16:30 1.00' WHSUR DECOMP Set TWC & Test from below to 2000 psi 16:30 - 18:30 2.00 WHSUR DECOMP Blow Down Lines, N/D Tree & Adapter 18:30 - 19:00 0.50 WHSUR DECOMP Pull SBMS Seal & Terminate Twin Control Lines 19:00-22:30 3.50 WHSUR DECOMP N/UBOP 22:30 - 23:00 0.50 WHSUR DECOMP Jack & Level Sub 23:00 - 00:00 1.00 WHSUR DECOMP R/U Test Equipment, Prep to Test BOP 12/212000 00:00 - 04:00 4.00 BOPSUF DECOMP . Test BOPs, All Lines, Valves Etc to 250 5 Minutes, 3500 10 Minutes. Could not test lower pipe rams, XO in way. 04:00 - 05:00 1.00 BOPSUI~ DECOMP L/D Test Joint 05:00 - 06:00 1.00 BOPSUI~ DECOMP R/U DSM Lubricator, Pull TWC 06:00 - 07:30 1.50 PULL DECOMP BOLDS, Screw Into HGR, Pull HGR to Floor w/112K Max, Flow Check Well, Static 07:30- 09:30 2.00 PULL DECOMP R/U CR Equipment, PJSM ,09:30 - 00:00 14.50 PULL DECOMP Pull 321 Jts 3.5" 9.2# 13Cr80 NSCT R-2 Tbg, SSSV, Recovered 58 SS Bands, 5 GLMs & 13.51' of Jet Cut Jnt, NORM Inspect 12/3/2000 00:00 - 00:30 0.50 PULL DECOMP Finish L/D 3.5" TBG; 321 Jts 3.5" 9.3# 13Cr80 NSCT R-2; SSSV, 5 GLM Assy & 13.51' Cut Jr, 58 SSBands Norm Inspect All. Calc TOF 10088 00:30 - 01:30 1.00 PULL DECOMP PJD Chrome Tbg Tools 01:30 - 02:00 0.50 PULL DECOMP Clean Rig Floor 02:00 - 03:00 1.00 BOPSUF DECOMP M/U Test Plug, Set in Wellhead, Test Lower Pipe Rams( 2 718 X 5" .VBR) to 250 Low, 5 Min, 3500 Hi, 10 Minutes, Pull Test Plug, Set Wear Ring 03:00 - 05:00 2.00 CLEAN DECOMP P/U BHA # 1, RIH to 963 05:00 - 06:00 1.00 CLEAN DECOMP Service Top Drive 06:00 - 07:00 1.00 CLEAN DECOMP Cut & Slip Drill Line 07:00 - 14:00 7.00 CLEAN DECOMP RIH, Picking Up 4" DP to 10024 14:00 - 15:00 1.00 CLEAN DECOMP Circ Hi Vis Sweep 12 BPM @ 1950 psi, PU 215K, SO 172K, RT 185K, 20 RPM @ 5K ft/~, Small Amount Sand in Returns 15:00 - 15:30 0.50 CLEAN DECOMP Pump Dry Job, Blow Down Top Drive 15:30 - 20:30 5.00 CLEAN DECOMP POH with BHA #1 20:30 - 21:00 0.50 CLEAN DECOMP Clear Rig Floor 21:00 - 23:00 2.00 CLEAN DECOMP PJSM, PJU Sheaves, High Wind Conditions, PJU Schlumberger 23:00 - 00:00 1.00 CLEAN DECOMP RIH with GPJCCL/EZSV, Correlate with Atlas Compensated Neutron-Gamma Ray & Tie in WI Kingak "JD" 1214/2000 :00:00 - 03:30 3.50 CLEAN DECOMP Continue Run GPJCCL & EZSV BP, Set @ 9937 (2' above Csg Collar), POH WL PJSM, PJD Schlumberger 03:30 - 04:00 0.50 CLEAN DECOMP Close Blind Rams, Pressure Test BP & Csg to 3500 psi, 30 Min Pdnted: 1112/2001 4:31:50 PM BP EXPLORATION Page 2 of 5 Operations Summa Report Legal Well Name: Z-21 Common Well Name: Z-21A Spud Date: 4/19/1989 Event Name: REENTER & COMPLETE Start: 12/1/2000 End: 12/14/2000 Contractor Name: NABORS Rig Release: 12/14/2000 Group: RIG Rig Name: NABORS 7ES Rig Number: Sub Phase .Description of Operations Date From-To Hours Task Code' 12/4/2000 04:00 - 07:30 3.50 STWHIP LNR1 P/U BHA # 2, RIH to 1057 07:30 - 08:00 0.50 STWHIP LNR1 Service Top Drive 08:00 - 08:30 0.50 STWHIP LNR1 Install Guide (removed for BHA M/U) 08:30 - 09:30 1.00 STWHIP LNR1 RIH to 2550, Test MWD 09:30 - 11:30 2.00 STWHIP LNR1 RIH to 6000' Fill Pipe 11:30 - 14:00 2.50 STWHIP LNR1 RIH to 9923 14:00 - 15:30 1.50 STWHIP LNR1 Break Circ, Orient WS, Tag BP@ 9939, 210K Up, 175K Down, Orient WS to 80R of Highside, Set Whipstock Anchor to 18K, Test Pull 5K, Shear Off WS w/40K (TOW 9916/BOW 9932 15:30 - 18:00 2.50 STWHIP LNR1 Displace 8.8 Brine with 25 bbl Hi Vis Weighted Spacer to 9.6#/gal, Chased with 10.9 LSND Mud @ 8 BPM 18:00 - 00:00 6.00 STWHIP LNR1 ,Milling Window f/9916-9929, WOB 8-10, RPM 120, Torque 9000, Pump Rate 416 gpm, 2200 psi 12/5/2000 00:00 - 05:00 5.00 STWHIP LNR1 Continued to mill window in 9 5/8" casing to 9934 ft. and drilled formation to 9949 ft. Worked and reamed mill thru window with no drag or torque. Pumped Hi-Lo sweep. 05:00 - 05:30 0.50 STWHIP LNR1 Conducted FIT to 670 psi with no leakoff. EMW FIT at 9934 ft. MD ( 8125 ft. TVD) = 12.49 ppg. 05:30 - 06:00 0.50 STWHIP LNR1 Pump dry job. 06:00 - 09:00 3.00 STWHIP LNR1 POOH with drill pipe. 09:00 - 11:00 2.00 STWHIP LNR1 Laid down whipstock mill BHA. Mills were 8 1/2" OD gauge. 11:00 - 13:00 2.00 STWHIP LNR1 Cleared drill floor of tools. Pulled wear ring. Flushed BOP stack. Set wear ring. 13:00 - 13:30 0.50 DRILL LNR1 Calibrated Sperry Sun depth tracking equipment. 13:30 - 15:30 2.00 DRILL LNR1 Picked up and made up directional drilling BHA #2. 15:30 - 17:30 2.00~ DRILL LNR1 Picked up 21 joints HWDP. 17:30 - 20:00 2.50 DRILL LNR1 RIH to 8300 ft. Filled drill pipe. 20:00 - 21:30 1.50 DRILL LNR1 PJSM. Slipped and cut 80 ft. drill line. Serviced top drive. 21:30 - 00:00 2.50 DRILL LNR1 MAD PASS logged interval 9700 ft. to 9917 ft. 12/6/2000 00:00 - 00:30 0.50 DRILL LNR1 Finish running MAD pass log to maximum bit depth of 9944 ft. 00:30 - 12:00 11.50 DRILL LNR1 Directionally drilled from 9949 ft. to 10, 120 ft. AST - 7 hrs; ART - 1 hr. 12:00 - 13:00 1.00 DRILL LNR1 Cleaned suction screens on mud pumps. 13:00 - 23:00 10.00 DRILL LNR1 Directionally drilled to 10,458 ft. base of Kingak/Top of Sag River. Final P rate - 18 ft/hr. AST - 2.5 hrs; ART - 6.5 hrs. 23:00 - 00:00 1.00 DRILL LNR1 Pump hi vis sweep while CBU for geological samples. 12/7/2000 00:00 - 00:30 0.50 DRILL LNR1 Finished circulating bottoms up for geological samples and circulated sweep to surface. 00:30 - 01:30 1.00 DRILL LNR1 Made wiper trip to 9916 ft. Had no drag out or in. Had no fill back on bottom. 01:30 - 03:30 2.00 DRILL LNR1 Circulated hi vis sweep surface to surface. Rotated and reciprocated . drill pipe while circulating at 550 gpm. Conditioned mud to run liner. 'Spotted 50 barrel liner running mud pill in interval 9750-10,458 ft. 03:30 - 04:00 0.50 DRILL LNR1 Dropped ESS survey for JORPS. 04:00 - 08:00 4.00 DRILL LNR1 POOH w/drill pipe. 08:00 - 09:30 1.50 DRILL LNR1 Laid down direction BHA. 09:30 - 10:30 1.00 CASE LNR1 Cleared rig. floor and rigged up casing handling equipment. 10:30 - 12:00 1.50 CASE LNR1 Held PJSM with Nabors casing. Made up 7" shoe joints and tested. 12:00 - 13:30 1.50 CASE LNR1 RIH picking up 7" casing liner. Made up Baker liner hanger. 13:30 - 14:00 0.50 CASE LNR1 Filled liner and drill pipe and circulated. 14:00 - 21:00 7.00 CASE LNR1 RIH with 7" liner on 4" drill pipe. Made up cementing head on single. 21:00 - 22:00 1.00 CASE LNR1 Circulated liner volume with shoe at 9878 ft. 22:00 - 23:00 1.00 CASE LNR1 Finished RIH with liner to 10,458 ft. Had to wash last 20 ft. to bottom. Printed: 1112/2001 4:31:50 PM BP EXPLORATION Page 3 of 5 Operations Summar Report Legal Well Name: Z-21 ~Common Well Name: Z-21A Spud Date: 4/19/1989 Event Name: REENTER & COMPLETE Start: 12/1/2000 End: 12/14/2000 Contractor Name: NABORS Rig Release: 12/14/2000 Group: RIG Rig Name: NABORS 7ES Rig Number: , Sub Date From-To Hours Task Code Phase Description of Operations 12/712000 23:00 - 00:00 1.00 CASE LNR1 Circulated and conditioned mud at 6.0 bpm prior to cementing. 12/8/2000 00:00 - 00:30 0.50 CEMT LNR1 Circulated and conditioned mud while holding PJSM with Dowell, Baker & Nabors. Batch mixed 35 bbls. Dowell MudPush at 11.9 ppg and ' batch mixed 165 sacks of Class G cement (34 bbls.) to 15.8 ppg. Reached circulation rate of 6.0 bpm at 1300 psi. 00:30 - 02:00 1.50 CEMT LNR1 Tested lines to 4500 psi. Pumped 35 bbls. MudPush spacer, 34 bbls 15.8 ppg Class (3 cement and dropped drill pipe wiper dart. Pumped 10 bbls fresh water and displaced cement at 6.0 bpm. Bumped plug with 2000 psi and pressured drill pipe to 3500 psi to set liner hanger. Released liner setting tool and set liner top packer with 100 K weight. 02:00 - 03:00 1.00 CEMT LNR1 Pullled liner setting from packer and circulated excess cement out long way at 14 bpm. Recovered estimated 10 bbls cement. 03:00 - 03:30 0.50 CEMT LNR1 Rigged down cementing equipment and cleared floor. 03:30 - 08:00 4.50 CEMT LNR1 . POOH with liner setting tool. 08:00 - 08:30 0.50 BOPSUI~ PROD1 Pulled wear bushing. 08:30 - 13:00 4.50 BOPSUI;.WHED PROD1 Worked with BOP test plug to get to hold. Had to lock test plug with LDS to 550 ft-lbs torque. 13:00 - 16:00 3.00 BOPSUI; PROD1 Tested BOPE, pipe and blind rams, annular preventer, safety valve, dart valve, choke manifold and upper and lower well control valves to 250/3500 psi per BP Amoco and AOGCC specifications and regulations. Witness of test waived by Jeff Jones. 16:00 - 18:00 2.00 DRILL PROD1 Made up 4 3/4" directional drilling BHA #3. Uploaded and checked motor and MWD. 18:00 - 18:30 0.50 DRILL PROD1 Picked up 3 1/2" HWDP. 18:30 - 19:30 1.00 DRILL PROD1 Serviced rig and top drive. 19:30 - 23:00 3.50 DRILL PROD1 RIH picking up additional 15 joints DP and running out of derrick. 23:00 - 00:00 1.00 DRILL PROD1 Conducted D5 kick drill and stripping drill with Henson crew. 12/9/2000 00:00 - 02:00 2.00 DRILL PROD1 Continue RIH f/7800' - 10,326'. Tagged 44' cement fill in liner. 02:00- 04:00 2.00 DRILL PROD1 CBU. 04:00 - 05:00 1.00 DRILL PROD1 Test 9 5/8" x 7" casing to 3000 psi fl 30 min-OK. 05:00 - 08:00 3.00 DRILL PROD1 Drill cement & shoe track to 10,455' (just above float shoe). Spill Drill-OS-1 min. 08:00 - 10:00 2.00 DRILL PROD1 Circ Hi-Vis sweep surface to surface. 10:00 - 13:30 3.50 DRILL PROD1 Pump Hi-Vis spacer. Displace well to 8.8~ QuickDril while rotating & reciprocating. Clean suction pit. 13:30 - 14:00 0.50 DRILL PROD1 Drill float shoe and 20' new hole to 10,478. ART: 30 min. 14:00 - 15:00 1.00' DRILL PROD1 Perform FIT to 9.8 ppg EMW. 15:00 - 00:00 9.00 DRILL PROD1 Drld f/10,478'- 10,693'. ART: 1.5 hrs; AST: 6.5 hrs. D2 Drill-OS-l:10 min. 12/10/2000 00:00 - 09:30 9.50 DRILL PROD1 Drld f! 10,693' to TD @ 11,145'. ART: 7 hrs; AST: .75 hr. 09:30- 12:30 3.00 DRILL PROD1 CBU. 12:30 - 13:00 0.50 DRILL PROD1 POH to 9892' to space PBL sub @ T~L. No drag. Hole in good shape. 13:00 - 16:00 3.00 DRILL PROD1 Drop ball & open PBL. Pump Hi-Vis sweep @ 12 bpm while rotating 100 rpm & reciprocating. Cleaned considerable amount of sand from top of liner. Circ clean. Close PBL. 16:00 - 17:30 1.50 DRILL PROD1 Cut drlgline & service top drive. 17:30 - 18:00 0.50 DRILL PROD1 RIH to 11,145'. No fill-no problems. 18:00 - 21:30 3.50 DRILL PROD1 Circ & cond mud. Pump Hi-Vis sweep while rotating & reciprocating. Spot liner running pill. 21:30 - 22:30 1.00 DRILL PROD1 Drop ESS. POH to 10,100'. Drop rabbit. 22:30 - 00:00 1.50 DRILL PROD1 Pump dry job. Blow down. POH to 8000°. D1 Drill-OS-1 min. 12/11/2000 00:00 - 02:30 2.50 DRILL PROD1 Finished POOH with drill pipe. 02:30 - 05:30 3.00 DRILL PROD1 Laid down HWDP, directional and MWD tools. Printed: 1112/2001 4:31:50 PM BP EXPLORATION Page 4 of 5 Operations Summa Report · . Legal Well Name: Z-21 Common Well Name: Z-21A Spud Date: 4/19/1989 Event Name: REENTER & COMPLETE Start: 12/1/2000 End: 12/14/2000 Contractor Name: NABORS Rig Release: 12/14/2000 Group: RIG Rig Name: NABORS 7ES Rig Number: Sub Phase · DescriptiOn of Operations Date From - To Hours Task Code! .. 12/11/2000 05:30 - 05:45 0.25 EVAL PROD1 PJSM with Schlumberger. 05:45 - 07:30 1.75 EVAL PROD1 Rigged up Schlumberger and loaded radioactive soume. 07:30 - 11:30 4.00 EVAL PROD1 Ran Schlumberger Platform Express AlT, Density-Neutron, Sonic logs 11,145-10,458 ft. 11:30 - 13:00 1.50 EVAL PROD1 Rigged down Schlumberger. 13:00 - 13:15 0.25 CASE PROD1 Held PJSM with Nabors casing. 13:15 - 14:00 0.75 CASE PROD1 Rigged up casing handling equipment. 14:00 - 16:00 2.00 CASE PROD1 Picked up 4 1/2" liner shoe joints and tested same. RIH with total of 20 joints (810.47 ft.) 4 1/2", 12.6 #/ft, 13Cr, NSCT-Mod casing liner. Picked up and made up Baker HMC liner hanger and ZXP liner top )acker. Circ liner volume. 16:00 - 16:30 0.50 CASE PROD1 Rigged down casing handling equipment. 16:30 - 21:00 4.50 CASE PROD1 RIH with 4 1/2" liner on drill pipe to 10,440 ft. Made up cement head on single drill pipe. 21:00 - 21:30 0.50 CASE PROD1 Circulated drill pipe volume with casing shoe at 10,440 ft. 21:30 - 22:00 0.50 CASE PROD1 Continued RIH with 4 1/2" liner to 11,145 ft. TD. No fill. 22:00 - 23:00 1.00 CEMT PROD1 Circulated and conditioned mud to cement liner. Held PJSM with Nabors, Peak, Baker, Dowell personnel. 23:00 - 23:30 0.50 CEMT PROD1 Circulated and conditioned mud while batch mixing 28 bbls. Class G cement and weighted spacer. Cement mixed at 23:30. 23:30 - 00:00 0.50 CEMT ClRC PROD1 Attempted to pressure test cement lines to 4500 psi. Locating and isolating leak. 12/12/2000 00:00 - 01:30 1.50 CEMT : PROD1 Tested lines to 4500 psi. Batch mixed 30 bbls. of 9:9 ppg D45 spacer and 28 bbls. (170 sacks) Class G cement at 15.8 ppg. Pumped 10 bbls. CW100, 30 bbls spacer and 28 bbls cement. Dropped drill pipe wiper dart and displaced cement with 40 bbls. 8.9 ppg Perf Pill and 63 bbls. mud at average rate of 5.0 bpm. Bumped plug and set liner hanger with 4000 psi. Bled off pressure and floats held OK. 01:30 - 02:00 0.50 CEMT PROD1 Released liner running tool with 20 rounds rotation. Pressured drill pipe to 1000 psi and pulled seals out of tie back sleeve. Sat down with setting dogs on packer and sheared at 30,000~. Rotated setting tool 15 rounds. Applied 100,000~ setting weight to liner top packer. 02:00 - 03:00 1.00 CEMT PROD1 Circulated bottoms up from top of liner packer at 11 bpm. Recovered CW100, D45 spacer and estimated 10 bbls. of cement. 03:00 - 05:00 2.00 CEMT PROD1 Circulated 8.9 ppg polymer mud from wellbore with 8.8 ppg saltwater until clean returns. 05:00 - 06:30 1.50 CEMT PROD1 Rigged down cementing head and lines and cleared floor. 06:30 - 11:30 5.00 CEMT PROD1 POOH with liner running tool. Stood 90 stands 4" drill pipe in derrick. 11:30 - 14:00 2.50 BOPSUI; COMP Pulled wear bushing from wellhead. Set tubing hanger in wellhead and . tested to 5000 psi - OK. Laid down tubing hanger. 14:00 - 15:00 1.00 BOPSUI; COMP Closed blind rams and tested casing and liner lap to 3000 psi for 30 mins - OK. 15:00 - 15:30 0.50 RUNCOI~ COMP ~Held PJSM re running chrome completion with Nabors and Baker. 15:30 - 17:30 2.00 RUNCOI~ COMP i Made up WLEG, nipples and packer and RIH on 3 1/2" 13Cr tubing. 17:30 - 18:00 0.50 RUNCOI~ COMP Serviced rig and top drive. 18:00 - 00:00 6.00 RUNCOI~ ~ COMP Ran 3 1/2" 13 Cr tubing completion. 12/13/2000 00:00 - 06:30 6.50 RUNCOI~ COMP Finished running in hole with 3 112" chrome completion picking up used 'tubing. 06:30 - 07:00 0.50 RUNCOI~ COMP Space out tubing string. 07:00 - 09:00 2.00 RUNCOI~I COMP Rigged down tubing handling tools and cleared floor..Installed tubing hanger. 09:00 - 13:00 4.00 RUNCOI~ ~ COMP Reverse circulated wellbore with filtered 8.5 ppg seawater containing Printed: 1112/2001 4:31:50 PM BP EXPLORATION Page 5 of 5 Operations Summar Report Legal Well Name: Z-21 Common Well Name: Z-21A Spud Date: 4/19/1989 Event Name: REENTER & COMPLETE Start: 12/1/2000 End: 12/14/2000 Contractor Name: NABORS Rig Release: 12/14/2000 Group: RIG Rig Name: NABORS 7ES Rig Number: 'Sub Date From-To Hours Task Code phase Descripti°n°fOperati°ns 12113/2000 09:00 - 13:00 4.00 RUNCOr COMP 0.5% Corexit corrosion inhibitor. 13:00 - 13:30 0.50 RUNCOr~ 'COMP Landed tubing hanger, tightened LDS and tested to 5000 psi. 13:30 - 16:30 3.00 RUNCOI~ !COMP Dropped ball rod and set Baker SABL-3 packer with 3500 psi. Tested ~tubing to 3500 psi for 30 rains. - OK. Pressured casing to 3500 psi and bled tubing to 1500 psi for 2000 psi differential pressure test of packer for 30 mins. - OK. Bled tubing pressure to 1300 psi and sheared RP valve. Bled pressure off wellbore. 16:30 - 17:30 1.00 RUNCOI~! COMP Installed two way check valve and tested from below to 2500 psi. 17:30 - 19:30 2.00 BOPSUI; COMP Nippled down BOPE, ,19:30 - 23:00 3.50 WHSUR COMP Installed 4 1/16" ClW 5000 psi WP Chrome Christmas tree and tested to 5000 psi. Tested tubing hanger seals to 5000 psi - OK. Repaired gland packing on LDS. 23:00 - 00:00 1.00 WHSUR COMP Rigged up DSM lubricator and pulled TWC. 12/14/2000 00:00 - 03:30 3,50 WHSUR COMP RU hot oil. Pressure test lines. Pump 154 bbls diesel down annulus. U-tube & equalize to tbg. 03:30 - 05:00 1.50 WHSUR COMP Set BPV w/DSM. Test f/below to 2500 psi. Secure well. Rig released @ 0500 hrs on 12114100. Printed: 1112/2001 4:31:50 PM 04/1.8/0l 09:08 FAX 907 564 5193 BI' EXPLORATION ~002 ( ( Well: Z-21A Accept: 12/01/00 Field: Prudhoe Bay Spud: 12/06/00 APl: 50-029-21938-01 Release: 12/14/00 Permit: 200-101 Rig: Nabors 7ES ........ . ..... . ...... ,., = ..... ~,, ;.~; .--.=$.,.: ,_-. ~, -.,, ........ , ........... ..= ...... ~ :,::-.., .,.~.,:. .... ~..~,..; ,......;=., .,,.: ...;,.:,..:::..::~,:. ~.....- ~ .::~,:... ;...,..-..::~ .,, ,-._.,.=:~....-: ,~-~., ;~;~ .:~_.~%~::/:~;...~:-...., ~:'~..;:~:;c,::~..~:. '.:k;/~.~..:.~:=. ';'.¥?' tJL~I~_!I~:-:'..,-'. "' .~i?$~,-'~'."7' ':~'::':,' a-~'.~ :"~-'::7....~:'.='''' '.':~.:' -:~." "~'.:;"""'~"..~.' ~~:V:i' ,.';'-:'.-.~';~Lc.a ...... '."= ..... '..- .... --~...,,. ',' " .... · ., -":-- , ":.'~,. --_-.. ,,i. . '., , .... ' - ~ -. PRE-RIG WORK 10126100 Tag hard bottom with nozzle at 10261' (CTMS), unable to go deeper, unable to inject. RIH with motor and 2.72" mill. 10/27100 Tag obstruction at 10266' with 2,70" junk mill. No progress after several hard stalls, Clean pick up, POH with mill. Mill is under gauge (approximately 2,65). Freeze protect well. 10128/00 Tagged unknown obstruction at 10234' sim with Lib origin still unknown. 11 I12/00 Investigate problem in the tail pipe. Ran 2.5" drive down bailer. Sat down at 10196' sim, worked through, RIH to 10225' sim. No sample, bailer bottom tore up. Ran 2.625 cen / 2.5 Lib. Sat down at 10196' sim. Workthrough. RIH to 10227' wire. Impression of parted / collapsed pipe (?). (Aisc has unidentifiable marking in middle of block.) Turned Lib and bailer bottom in to supervisor. 11114/00 ~ ' ' Rig up, arm cutter, RIH with cutter. Tie into SWS jewelry Icg. Cut the middle of the first joint above upper packer at approximately 10085'. Positive indication of shot. Tubing pressure came up to 900#. POOH, rig down, move off. POST RIG WORK 01107101 Drifted tubing with 2.5 dummy gun and T.E.L., unable to locate tubing tail. Tagged at 10875' sim, 01111101 Found TD at 10874' elm, top of cement at 10317' at liner top. 03/04/01 MIRU, drift coil. Pick up 2.5" down jet nozzle and DCV's. RIH and clean out down to TD at 11063' ctm. Freeze protect to 2500' with 60/40. 03/05/01 Run SCMT for cement bond and jewelry Icg. 03/11101 Run 2-1/2" Powerjet- Shot at 6 spf, total of 61 shots, Perf interval was 10858' to 10868'. RECEIVED APR 18 2001 AlasKa 0il & ~a~ uona. L;omlnF~ Anchor~e Scblumkerger Alaska Data & Consulting Services 3940 Arctic BIvd, Suite 300 Anchorage, AK 99503-5711 ATTN: Sherrie NO. 1092 Company: Field: State of Alaska Alaska Oil & Gas Cons Comm Afln: Lisa Weepie 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Color Well Job # Log Description Date Blueline Sepia Prints CD D.S. 5-11A /~--O(~'-') MEM PRODUCTION PROFILE 03/08/01 1 1 G-13A ~)--/~O3 21135 MCNL (PDC) 02/21/01 1 1 1 Z-21A ~.~[~/Oi 21123 SCMT 03/05/01 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: 3/20/01 BP Exploration (Alaska) Inc. Petrotectnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date Delivered: RECEIVED HAR 2 3 2001 Aladm Oil & Gas Cons. Schlumberger GeoQuest 3940 Arctic Blvd, Suite 300 Anchorage, AK 99503-5711 Al-tN: Sherrie Received~~~~~~_~ North Slope Alaska Alaska Drilling & Wells PBU_WOA Z Pad, Slot Z-21 Z-21A Surveyed: 10 December, 2000 DEFINITIVE S UR VEY REPORT 8 January, 2001 ~' . Your Ref: AP1500292193801 Surface Coordinates: 5959360.12 N, 599389.00 E (70° 17'54.1332" N, 149° 11'42.4154" VIp Kelly Bushing: 85.12ft above Mean Sea Level DRILLING SERVICES . . Survey Reft svy10675 A Halliburton Company SperrY'sun Drilling Services Survey Report for Z-2f A Your Ref: AP1 500292f 9380f Surveyed: fO December, 2000 North Slope Alaska Measured Depth (ft) Incl. Sub-Sea Depth (ft) Vertical Local Coordinates Depth Northings Eastings (ft) (ft) (ft) 9911.00 42.350 29.250 8021.17 8106.29 9916.00 42.360 29.300 8024.86 8109.98 9921.00 42.370 29.350 8028.55 8113.67 9935.96 42.740 30.380 8039.57 8124.69 9971.06 41.170 32.910 8065.68 8150.80 10001.18 39.570 35.170 8088.63 8173.75 10031.70 37.780 37.570 8112.45 8197.57 10066.02 35.270 40.390 8140.03 8225.15 10095.44 34.300 42.910 8164.20 8249.32 10123.56 34.050 45.410 8187.46 8272.58 10158.29 33.630 48.630 8216.31 8301.43 10190.60 33.380 51.700 8243.25 8328.37 10217.87 33.770 54.460 8265.98 8351.10 10248.29 33.920 56.500 8291.24 8376.36 10283.78 33.570 57.290 8320.75 8405.87 10310.42 33.390 58.850 8342.97 8428.09 10400.16 32.520 62.680 8418.28 8503.40 10499.47 32.120 60.890 8502.21 8587.33 10595.29 31.620 60.680 8583.58 8668.70 10689.43 34.310 57.070 8662.57 8747.69 10780.79 33.860 53.120 8738.24 8823.36 10872.06 31.580 51.510 8815.02 8900.14 10967.03 28.800 48.700 8897.11 8982.23 11057.88 26.550 47.550 8977.56 9062.68 11085.96 25.730 47.060 9002.77 9087.89 11145.00 25.730 47.060 9055.96 9141.08 4404.21 N 31.15 E 4407.15 N 32.79 E 4410.09 N 34.44 E 4418.86 N 39.48 E 4438.84N 51.78 E 4455.01N 62.70 E 4470.36 N 74.00 E 4486.25 N 86.83 E 4498.79 N 97.98 E 4510.12 N 108.98 E 4523.30 N 123.13 E 4534.73 N 136.82 E 4543.78 N 148.87 E 4553.38 N 162.83 E 4564.15 N 179.34 E Global Coordinates Dogleg Northings Eastings Rate (ft) (ft) (°/100ft) 5963764.36 N 599361.90 E 5963767.32 N 599363.51 E 5963770.28 N 599365.12 E 5963779.12 N 599370.04 E 5963799.25 N 599382.08 E 5963815.56 N 599392.77 E 5963831.07 N 599403.87 E 5963847.12 N 599416.49 E 5963859.81N 599427.48 E 5963871.29 N 599438.33 E 5963884.65 N 599452.29 E 5963896.26 N 599465.83 E 5963905.47 N 599477.77 E 5963915.26 N 599491.60 E 5963926.24 N 599507.97 E 4571.92 N 191.81E 5963934.18 N 599520.33 E 4595.77 N 234.38 E 5963958.59 N 599562.58 E 4620.86 N 281.17 E 5963984.30 N 599609.03 E 4645.56 N 325.33 E 5964009.57 N 599652.86 E 4672.07 N 369.12 E 5964036.67 N 599696.30 E 4701.35 N 411.10 E 5964066.49 N 599737.89 E 4731.49 N 450.15 E 5964097.14 N 599776.53 E 4762.07 N 486.81 E 5964128.21 N 599812.79 E 4790.22 N 518.23 E 5964156.77 N 599843.84 E 4798.61 N 527.33 E 5964165.28 N 599852.82 E 4816.07 N 546.09 E 5964182.99 N 599871.35 E 0.71 0.70 5.27 6.57 7.20 7.65 8.80 5.89 5.07 5.30 5.30 5.78 3.77 1.58 3.30 2.52 1.04 0.53 3.54 2.47 2.67 3.28 2.55 3.02 0.00 Alaska Drilling & Wells PBU WOA Z Pad Vertical Section Comment 2732.61 2735.72 2738.83 2748.19 2770.18 2788.73 2807.08 2826.97 2843.47 2859.12 2878.38 2896.20 2911.27 2928.18 2947.82 2962.44 3010.67 3063.00 3113.01 3163.85 3214.95 3264.28 3312.00 3354.09 3366.42 3391.95 Tie On Point MWD Magnetic Window Point Projected Survey 8 January, 2001.18:20 Page 2 of 4 DrillQuest 2.00.06 Sperry-Sun Drilling Services Survey Report for Z-21A Your Ref: AP1500292193801 Surveyed: 10 December, 2000 North Slope Alaska Alaska Drilling & Wells PBU WOA Z Pad All data is in feet unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are relative to Well Reference. Northings and Eastings are relative to Well Reference. Magnetic Declination at Surface is 26.537° (02-Dec-00) The Dogleg Severity is in Degrees per 100 feet. Vertical Section is from Well Reference and calculated along an Azimuth of 52.057° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 11145.00ft., The Bottom Hole Displacement is 4846.93ft., in the Direction of 6.469° (True). Comments Measured Station Coordinates Depth TVD Northings Eastings (ft) (ft) (ft) (ft) 9911.00 8106.29 4404.21 N 31.15 E 9916.00 8109.98 4407.15 N 32.79 E 11145.00 9141.08 4816.07 N 546.09 E Comment Tie On Point Window Point Projected Survey 8 January, 2001 - f8:20 Page 3 of 4 DrillQuest 2.00.06 Sperry-Sun Drilling Services Survey Report for Z-21A Your Ref: AP1500292193801 Surveyed: 10 December, 2000 North Slope Alaska Alaska Drilling & Wells PBU WOA Z Pad Survey tool program for Z-21A From To Measured Vertical Measured Depth Depth Depth (ft) (ft) (ft) Vertical Depth (ft) 0.00 0.00 9911.00 8106.29 9911.00 8106.29 11145.00 9141.08 Survey Tool Description AK-1 BP_HG - BP High Accuracy Gym (Z-21) MWD Magnetic (Z-21A) 8 January, 2001 - f8:20 Page 4 of 4 DrillQuest 2.00.06 1/24/01 Schlumberger Alaska Data & Consulting Services 3940 Arctic Blvd, Suite 300 Anchorage, AK 99503-5711 ATTN: Sherrie NO. 903 Company: Field: State of Alaska Alaska Oil & Gas Conservation Attn: Lisa Weepie 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Color Well Job # Log Description Date Blueline Sepia Prints CD D.S. 3-25A 20480 RST 001120 ! 1 1 D.S. 11-32 20475 RST 001118 I 1 1 Z-21A 21036 SCMT 010111 1 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotectnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Schlumberger GeoQuest 3940 Arctic Blvd, Suite 300 Anchorage, AK 99503-5711 AI-rN: Sherrie Receivedi~~ Rum BP ~ ~llglllI6 & IIgELLS o OO- \0 \ November 13, 2000 Mr. Blair Wondzell Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, AK 99501 (907) 279-1433 (907) 276-7542 (fax) Re: Change to PBU Well Z-21A P&A Plan (Approved Sundry #300-178) Dear Mr. Wondzell, As per our telephone conversation earlier today, we have been experiencing difficulties with P&A operations on the existing perforations of PBU Well Z-21. This letter is to provide you with an understanding of the current condition of well Z-21 and to provide a general outline of our proposed path forward. As per the approved 'Application for Sundry Approval' (Permit #200-101), the plan was to P&A the existing perforations by laying in cement with coiled tubing as per standard PBU operations. Coiled tubing was moved onto the well and after cleaning out several feet of fill in the 3-1/2" tubing, a hard restriction was encountered in the 3-1/2" tailpipe just below the bottom 9-5~8" production packer. An attempt to establish injection was made, however the wellbore pressured up to 2400 psi without any signs of leak-off. A motor and mill were then run in the hole on coiled tubing, however no progress was made at cleaning-out the restriction. Plans were made to cut the 3-1/2" tailpipe and allow it to fall downhole, providing access to the 7" liner and perforations. A wireline collar Iocator log was run and found the restriction to be right at the bottom of the lower production packer, therefore not allowing enough room to make the tubing cut. The proposed path forward is to abandon attempts to access the existing perforations and use barriers created in the upcoming sidetrack operations to complete the P&A. Those barriers will include a bridge plug set in the 9-5/8" casing and cement from the 7" liner cement job. The plan is to cut the 3-1/2" tubing above the two production packers at ~10,090' MD. The rig would then move on and set a bridge plug on wireline at ~9924' MD. The well will then be sidetracked and a 7" liner cemented back into the 9-5~8" casing. Please see the attached diagrams for details. If you have any questions or require any additional information on this matter, please contact me at 564-5521. Sincerely, William S. Isaacson Drilling Engineer BP Alaska Drilling & Wells TREE: 4-1/16" - 5M CIW Chrome . WELLHEAD: 13 518"- 5M FMC Z-21A Proposed Completion. Base Flange Elevation = 57.42' Nabors 7ES RKB = 84.12' 3-1/2" 'X' Landing Nipple w'~h 2.~'13" seal bore. 13-3/8", 68 #/ft, L-80, BTC Window Milled from Whipstock Top of Window at +~-9,900' MD~ Bridge Plug set at +~-9924' MD ~ Pre-Rig Tubing Cut at +/-10,090' Top 9-5~8" Produ ctio n Packer at +1-=10,123' 7" Liner Top 110,260'1 .so, .scc I Junk in 3-112" Tubing Tail up to Lower 9-5/8"/ I Production Packer not allowing access to perforations. Perforations from 10,996' to 11,166' ' Top Hard Fill tagged at 1 1,052' MD 7", 26 #/ft, L80, BTC-Mod I'Il r400"~ Date Rev By 11/13/00 WSI 3-1/2' Gas Lift Mandrels with' handling pups installed. GAS LIFT MANDRELS '. .. # ' ... TVD Size Valve Type I 3334' 1-1/2" RP Shear 2 4834' 1-1/2" DV 3" 5834' 1-1/2" DV 4 6684' 1-1/2" DV .5 7534' 1-1/2" , DV 6 8330' or 1 jt 1-1/2" DV above pkr assy ..~.~m , . 3-1/2" 9.2# 13Cr~10, NSCT Tubing (rerun what was pulled from the well) ' ZXP gine'¥T~p'P~ckm: ". ' . . .~ . . '..' ' 'HMC' i-tY~lraulic Liner Hanger ..... . .. " "'"'" ': ' " ' '"' :' .i"'. "' ' '*" ., . . '3-112'? 'X' Lending Ni~pl~ with 2.813" Seal bore. 7"x 3,-II2" Baker '$-3' Prod'u,ctio0 Packer , !. , ~ .. 3-1/2"' 'x' Landing Nipple with 2.'8'13", seal bore. ' 3-1/2" '~(N' Landing N pple ~ith 2 813" seal bore and 2.75" No-GO I[~. ' " ' 3-112" WireLine Eniry Guide spaced-out into 4-112" liner tie,back slee,ve, · .... I 'I +}'10,32S' BAKER 5" x 7" ., I'+l-t 0,477'I 7", 26 #Iff, L~80, BTC~.'0d . . Comments', ",, -. · Proposed Completion ,., " Tie Back Sleeve .. ' ' ZXP Liner,Top Packer ... · "HMC' HydraulicLi'~er. Hangef : ... . .. .. ,.. Plug. Back Depth I +/-11,110' I ..... 4-1/~2''' .l,2..O'~ft', 13Cr-O0', NSCT I *1'11,194'1 "~ 'PRuOHoE BAY:.'UNIT ~ WELLi"Z-21A APl NO: 50-029-21938-01 Shared Services Drilling TREE: 4" CIW WELLHEAD: FMC ACTUATOR: BAKER 13-3/8", 68 #/ft, I ~ L-80, BTRS 2657 3-112", 9.2~lff, 13CR, NSCT, TUBING TUBING ID: 2.992" CAPACITY: 0.0087 BBL/FT Z-21 Current Status KB. ELEV = 91.82' BF. ELEV = 57.42' SSSVLAND,NGN,PPLE I 2191' (OTIS)( 2.75" ID) IMCMURRY GLM's (3.5"xl.5") __ (FMHO)(R..~K LATCHE...~S)__.__~ NO. 5 4 3 2 1 MD(BKB) 3079' 6303' 8532' 9599' 9993' TVDss 2986' 5494' 6990' 7786' 8077' DEV. 8° 48° 41° 43° 42° ICOMMENTS FROM RWO. NOTE: LOWER TIW PACKER IS FROM ORIGINAL COMPLETION AND WAS NOT RETREIVED DURING THE RWO. THE LOWER TAILPIPE AND TWO "X" NIPPLES MAY BE CORRODED AND LEAK. SEE WILTELEX DATED 2/27/95. Fill and Junk in 3-1/2" tailpipe blocking access to perforation. Junk fills 3-112" tailpipe up to bottom of lower production packer. TOP OF 7" LINER 9-5/8", 47~, L-80, NSCC 3.5" 'X'NIPPLE 9-5/8" TIW PACKER 3.5" 'X' NIPPLE DUMMY SEAL ASSY. 9-5/8" PACKER 3.5" 'X' NIPPLE 3.5" 'X' NIPPLE 3.5" TBG TAIL (OTIS)( 2.992 "ID) (ELMD) MARKERJOINT 10,111'1 10,180'1 10~195'1 10,217'I 1o,261'1 10,283'1 10~294'] t0,294'1 I 10,874'1 PERFORATION SUMMARY REF LOG: SWS- BHCS- 5-07-89 SIZE SPF INTERVAL O =EN/SQZ'D 2 1/8" 10,996-11022' OPEN/5-7-94 2 1/8" 11,030-11,040' OPEN/8-10-90 2 1/8" 11,052 - 11,088' " " 5" 11,088- 11,115' OPEN/5-11-89 5" 11,125 - 11,135' " " 2 1/8" 11,135-11,166' OPEN/8-10-90 0 CET ON DEPTH WITH BHC 05/047/89 OVER PERF. INTERVAL 4 4 PBTD ~ ~ 7", 26 #fit, L-80, BTRS I 1t,400'1 REV. BY DATE 05/07/89 , i COMMENTS INITIAL COMP. 5-7-94 PAB ADD PERF RWO-DOYON 16 4-4-95 11-13-00 M. LINDER WSI Revised LINER CORRSION VIDEO CAMERA 5/17/98 HARD BOTTOM I 11052' I CTMD 4/13198 PRUDHOE BAY UNIT WELL:Z-21(31-18-11-12) APl NO: 50-029-21938 SEC t8; TN t1N; RGE 12E BP Exploration (Alaska) IIDIII BP~ glllOlB6 & ligB.I$ November 6, 2000 Mr. Blair Wondzell Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, AK 99501 (907) 279-1433 (907) 276-7542 (fax) Re: Change to Approved Drilling Plan on PBU Well Z-21A (Permit #200-10t) Dear Mr. Wondzell, As per our telephone conversation of November 1, 2000, this letter is to confirm the change to the approved drilling plan on PBU Well Z-21A (Permit #200-101). The sidetrack was originally planned t'o exit into the Sag River formation by milling a window in the existing 7" production liner. Since then, pre-rig operations to P&A the existing perforations have discovered the liner to be more severely corroded than initially anticipated, causing concern with the planned sidetrack operations. The revised plan is to exit the wellbore from the 9-5/8" casing, up in the Kingak interval, and set an intermediate drilling liner immediately above the Sag River Formation. The approved target will then be drilled from below .the 7" casing shoe and a 4-1/2" liner run and cemented as originally proposed. The revised sidetrack scope and proposed completion diagram are attached, and a revised directional plan was included in the E-mail. If you have any questions or require any additional information on this matter, please contact me at 564-5521. Sincerely, William S. Isaacson Drilling Engineer Share Services Drilling ALASKA OIL AND GAS CONSERVATION CO~ISSION TONY KNOWLE$, ~OVERNOR 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 Dan Stone Senior Drilling Engineer BP Exploration (Alaska) Inc. P O Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Unit Z-21A BP Exploration (Alaska) Inc. Permit No: 200-101 Sur Loc: 719'SNL, 1669'EWL, Sec. 19, T1 IN, R12E, UM Btmhole Loc. 4107'NSL, 2609'WEL, Sec. 18, T1 IN, R12E, UM Dear Mr. Stone: Enclosed is the approved application for permit to redrill the above referenced well. The permit to redrill does not exempt you fi.om obtaining additional permits required by law from other governmental agencies, and does not authorize conducting drilling operations until all other required permitting determinations are made. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25 035. Sufficient notice (approximately 24 hours) must be given to allow a representative of the Commission to witness a test of BOPE installed prior to drilling new hole. Notice may be given by contacting the Commission petroleum field inspector on the North Slope pager at 659-3607. Sincerely, Daniel T. Seamount, Jr. Commissioner BY ORDER OF THE COMMISSION DATED this, .] ~"~ day of July, 2000 dlf/Enclosures cc: Department ofFish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA J/ ALASK( .... ~IL AND GAS CONSERVATION COrv~'"~SION ". PERMIT TO DRILL ... ~ 20 AAC 25.005 la. Type of work [] Drill [] Redrill 1 lb. Type of well [] Exploratory [] Stratigraphic Test [] Development Oil [] Re-Entry [] DeepenI [] Service [] Development Gas [] Single Zone [] Multiple Zone 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exploration (Alaska) Inc. 84.12' Prudhoe Bay Field / Prudhoe 3. Address 6. Property Designation Bay Pool P.O. Box 196612, Anchorage, Alaska 99519-6612 ADL 0.,q~~z~z. ~oZ. 4. Location of well at surface 7. Unit or Property Name 11. Type Bond (See 20 AAC 25.025) 719' SNL, 1669' EWL, SEC. 19, T11 N, R12E, UM Prudhoe Bay Unit At top of productive interval 8. Well Number 4107', NSL, 2874' WEL, SEC 18, T11 N, R12E Z-21A Number 2S100302630-277 At total depth 9. Approximate spud date 4107' NSL, 2609' WEL, SEC 18, T11 N, R12E 7/22/00 Amount $200,000.00 12. Distance to neares Property lin 3. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) ,,, 16. To be completed for deviated w"~ 17. Anticipated pressure {see 20 AAC 25.035 (e) (2)} Kick Off Depth 10530' Maximum Hole Angle 45.6' Maximum surface 2890 psig, At tota,!,,d, epth (TVD) 8464' 13735 psig 18. Casing Program Specifications Setting Depth Size Top Bottom QuantiW of Cement Hole Casing Weight Grade Couplin,q Lenqth MD TVD MD TVD (include sta,qe data) 6-1/8" 4-1/2" 12.6# 13Cr-80 NSCT 1196' 10050' 8211' 11246' 9060' 202sxClass'G' 15.8 ppg , , ,,, , ,,,,,,, 19. To be completed for Redrill, Re-entry, and Deepen Operations. ~ '~ Present well condition summaryORIGINAL Total depth: measured 11400 feet Plugs (measu'~ed)JUL 0 7 true vertical 9193 feet Effective depth: measured 11052 feet Junk. (measured) Fill at 11052' (04/98) J~a~8 0il & Gas Co~,. Com~n true vertical 8934 feet Casing Length Size Cemented MD TVD Structural Conductor 110' 20" 110' 110' Surface 2657' 13-3/8" 3684 cu ft Permafrost 2657' 2657' Intermediate 10528' 9-5/8" 2268 cu ft Class 'G' 10528' 8557' Production Liner 1141' 7" 378 cuft Class 'G' 10259' - 11400' 8364' - 9193' Perforation depth: measured 10996'- 11022', 11030'- 11040', 11052'- 11088', 11088'- 11115', 11125'- 11135', 11135'- 11166' true vertical 8894' - 8913', 8919' - 8926', 8934' - 8961 ', 8961' - 8980', 8988' - 8995', 8995' - 9018' 20. Attachments [] Filing Fee [] Property Plat [] BOP Sketch [] Diverter Sketch [] Drilling Program [] Drilling Fluid Program [] Time vs Depth Plot [] Refraction Analysis [] Seabed Report [] 20 AAC 25.050 Requirements Contact Engineer Name/Numbec Bill Isaacson, 564-5521 Prepared By Name/Number: Michael Williams, 564-4657 21. I hereby certify that the foregoing is true and corre~ct to the best of my knowledge Signed Dan Stone ~----------------~,.,._. "~. ,~""~'"'~=:::::~~ Title Senior Drilling Engineer Date Permit Number APl Number ,. Approval D,~_te See cover letter ~ '-/O I 50- 029-21938-01 ~'~-~'/~'-' ~ for other requirements Conditions of Approval: Samples Required [] Yes ~"No Mud Log Required [] Yes I~No Hydrogen Sulfide Measures I~['Yes [] No Directional Survey Required ~Yes [] No Required Working Pressure for BOPE [] 2K; [] 3K; [] 4K; []SK; [] 10K; [] 15K Other: '~,,~'O{~3 ~ ~(::3~::) -¥e..~ by order of .Approved By ORI~,~, c,,,-.,,,,~.,-, ~..,, Commissioner the commiss.!.o.n' Date '~'/ ...... Form 10-401 Rev. 12-01-85 D Taylor Seamount Submit In Triplicate Z-21A Permit to Drill I Well Name: I Z-21A Sidetrack Plan Summary I Type of Redrill (producer or injector): I Producer Surface Location: x = 599,389 / Y = 5,959,360 718' SNL 3283'WEL S19 T11N R12E Umiat Target Location: x = 599,715 / Y = 5,964,191 4107' NSL 2874'WEL S18T11N R12E Umiat Bottom Hole Location: x = 599,980 / Y = 5,964,195 4107' NSL 2609' WEL S18 T11N R12E Umiat I AFE Number: 14P8022 I Estimated Start Date: 17/22/00 IMD:111,246'1 I TVD=19144' I I Rig: I Nabors 7ES or 9ES I Operating days to complete: ICe,ar Box/MSL: 154.12' I I RKB= 184.12' I I Well Design (conventional, slimhole, etc.): I Conventional Twin Sidetrack I Objective: I Development production targeting Zone 4 reserves (replace existing well Z-211 Mud Program: Millin9 1 Cuttin9 Window Mud Properties: QUICKDRILn Density (ppg) I Funnel vis LSRV I PV 8.9 I 40 - 50 -25,000 cPI 5 - 7 Iyp 25 - 27 Whipstock Window in 7" I <100 <10 9.0-9.5 Production Mud Properties: QUICKDRILn Density (ppg) I Funnel vis LSRV I 8.9 - 9.0 40 - 50 < 12,000 cP 6 1/8" hole section PV Ca++ 5-8 17 - 22 <100 APl FI I pH <10 9.0-9.5 Directional'. KOP: I 10,530' MD Maximum Hole Angle: Close Approach Well: 45.6 degrees @ 10,570' (8585' TVD) None Logging Program: Production Hole(Horizontal) Drilling: Open Hole: Cased Hole: MWD/GR (entire interval) G R/Res/Neu/Den/Sonic None ;r, ,H ~,-, c ..... . u :,.,~;L.. 0 ~ ~:: '.,.: !:..' .) Alaska Oil & Gas Co~s. Commission Anchor, s .' Z-21A Permit to Drill Formation Markers: Formation Tops MD TVDss Comments Base Permafrost Not Penetrated SV3 / T5 Not Penetrated SV1 / T3 Not Penetrated UG4 / K15-C1 Not Penetrated UG1 / U~IS Not Penetrated WS1 /West Sak Not Penetrated CM3 / K-12 Not Penetrated CM2 / K-10 Not Penetrated CM-1 / K5 Not Penetrated K2/Top HRZ Not Penetrated Top Kinl;ak (JG) Not Penetrated Sag River N/A 8464' Kick-off in Sag River (;=st pore press = 8.5 ppg) Kick-off Point 10,530' 8472.3' Kick-off Point Shublik 10,565' 8497' Top Sadlerochit/Z4 10,749' 8640' Estimated pore pressure 3722 psi (8.2 ppg EMW) CGOC 10,915' 8780' Top Z3 10,986' 8840' Estimated pore pressure 3805 psi (8.2 ppg EMW) Top Z2 11,057' 8900' Estimated pore pressure 3831 psi (8.2 ppg EMW) HOT 11,104' 8940' OOWC 11,122' 8955' TD 11,246' 9060' Top Z1 N/A Not Reached Casinq/'l'ubing Proqram: Hole Csg/ Wt/Ft Grade Conn Length Top Btm Size Tb9 O.D. MD/TVD MD/TVD 6-1/8" 4-1/2" 12.6# 13Cr-80 NSCT 1,196' 10,050'/8211' 11,246'/9060' Tubing 3-1/2" 9.2# 13Cr-80 NSCT 10,017' -33'/33' 10,050'/8211' Cement Calculations: Liner Size 14-1/2" Production I Basis: Tail: Based on 82' shoe track volume, 716' of open hole with 50% excess, 270' of 7"x 4-1/2" liner lap, 210' of 9-5/8" x 4-1/2" liner lap, and 100' of 9-5/8" x 4" drill pipe annulus volume. Tail TOC: At top of liner -10,050' MD (8211' TVD). Total Cement Volume: I Tail 142 bbl/236 ft~ / 202 sks of Dowell Premium 'G' at I 1 15.8 ppg and 1.17 cf/sk. Well Control: Well control equipment consisting of 5000 psi working pressure pipe rams(2), blind/shear rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to ?.500 psi. RE.GE. V D Alaska Oil & Gas Cons. Commission Z-21A Permit to Drill Diverter, BOPE and drilling fluid system schematics on file with the AOGCC. · Maximum anticipated BHP: 3735 psi @ 8464' TVDss - Sag River · Maximum surface pressure: 2890 psi @ surface (based on BHP and a full column of gas from TD @ 0.10 psi/fi) · Planned BOP test pressure: 3500 psi · Planned completion fluid: 8.5 ppg Seawater / 6.8 ppg Diesel Drilling Hazards/Contingencies: HYDROGEN SULFIDE - H2S · Z Pad is not an H2S drill site. The highest level of H2S most recently measured on Z Pad has been 21 ppm from well Z-18. The highest level measured on well Z-21 was 5 ppm. Nevertheless, Standard Operating Procedures for H2S precautions should be followed at all times. DRILLING CLOSE APPROACH All wells pass close approach guidelines. · PRODUCTION SECTION · Several Z Pad wells have experienced a gas influx and/or gas cut mud after penetrating the Shublik. The cause has been suspected as small pockets of trapped pressure within the fractured Shublik shale. The pressure is' not continuous throughout the Z Pad area, however several wells have experienced the high pressure. Monitor well closely for signs of influx. · Differential sticking will be a problem if lost circulation is occurring or if the drill string is left stationary for an extended period or time. · The kick.tolerance for the kick-off point would be an infinite influx (annular volume) assuming an influx at section TD of 11,246'. This is a worst case scenario based on a 8.5 ppg pore pressure, a minimum fracture gradient of 10.0 ppg at the kick-off point, and 8.9 ppg mud in the hole. Disposal'. · No annular injection in this well. · Cuffings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS-04. Any metal cuttings will be sent to the North Slope Borough. · Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS- 04 for injection. Haul all'Class I wastes to Pad 3 for disposal. ;", ~ ," ~ ",~ ....... ~ ~.,w L_ :~., ~ i.'.'.. "' .. .Alaska 0il & Gas Cons. Commi~on Anchor~e Z-21A Permit to Drill SUMMARY SIDETRACK PROCEDURES Pre-Riq Work: * Notify the field AOGCC representative with intent to plug and abandon * 1. RIH with CTU and clean out fill down to hard bottom at 11,052' MD (tagged with CTU 4/13/98). Based upon prior attempts, coil will not be able to get deeper than 11,052' MD, however, if possible continue to wash down to bottom perforation depth. Perform a cement P&A using 15.8 ppg class 'G' cement with adequate cement volume to fill the 7" liner from top of fill to -10,575', plus squeeze 5 bbls to the perforations. Estimated minimum cement volume needed is 23.3 barrels. Use aggregate as required to aid in plugging the perfs. Circulate well clean above cement plug. NOTE: For AOGCC compliance the minimum top of cement must extend 100' above the top perforation. However, for Z-21A sidetrack operations the top cement should extend uphole to allow the cement plug to be used as a base for the bottom trip whipstock assembly. Do not bring cement above 10,550' MD and circulate well as clean as possible on top of the cement plug. 2. Rig up slickline, tag and document top of cement and drift tubing for upcoming tubing cut. 3. Liquid pack the 9-5/8" x 3-1/2" annulus to surface. Test the integrity of the cement plug and 9-5/8" casing by simultaneously pressure testing both the tubing and 9-5/8" annulus to 3000 psi for 30 minutes. Increase tubing pressure prior to the 9-5/8" annulus to avoid possibility of tubing collapse. 4. Cut the 31~'' 13Cr-80 tubing at 10,119' MD (as per the 4/3/95 Tubing Summary, this is ~7' down into the 9.37' pup immediately on top of the TIW 'HB-BP-T' packer). Placement of this cut is critical. 5. Displace the well to clean seawater by circulating down tubing through the tubing cut. Continue to circulate until clean seawater returns to surface. 'Freeze protect top 2200' MD with diesel. The well should not be left with methanol as a freeze protect fluid, diesel only. 6. Test the FMC 9-5/8" mandrel packoff and tubing hanger seals to 5000 psi for 30 minutes. 7. Bleed tubing and annuli pressures to zero. Set a BPV in the tubing hanger and test from below to 1000 psi. Secure well. 8. Remove the well house and flowlines. If necessary, level the pad. Please provide total well preparation cost on the handover form. Ri~ Operations: 1. MIRU Nabors 7E~or 9ES. 2. Circulate out freez'eq~rotection and displace well to seawater. Set TWC. 3. Nipple down tree. Ni~,e up and test BOPE. 4. Pull and lay down 3-1/2"'t~ing from E-line cut and a,,bove. , , 5. MU 9-5/8" packer milling ,~s,sembly and RIH on 4 DP. Mill the upper TIW HB-BP-T permanent packer. POOH._ ..... ~ 6. PU spear for 3-1/2" tubing and R'lld,. Latch into 3-1/2" tubing and fish remaining completion equipment from above the second TIW packer~lickstick assembly. 7. PU overshot for slickstick and RIH. "~.atch slickstick and rotate latch assembly free from packer. POOH wi~h slickstick assembly. ~ 8. PU 9-5/8 packer mill assembly with h.ydra'~,.lic PRT and RIH. Mill the lower TIW permanent packer until it drops. Recover tailpipe assembly using PRT and millout extension below packer.. POOH and lay down all remaining compleiton equipment. R~EC~!,~ ~VE~3 Alaska Oil & Gas Cons. Commission Anchor,'~e Z-21A Permit to Drill 9. MU 6~ bit on window milling assembly and RIH to top of cement in 7" liner. Dress top of cement as requirc=~and use MWD GR. to correlate top of cement to planned kick-off depth. 10. RIH with~" Baker bottom-trip anchor whipstock assembly (equipped with spacer tube as required to position wl~stock at planned KOP and set whipstock on cement plug). Orient whipstock as desired and set on cc~ent plug. M,,ill window in 7" casing at -10,530' MD. POOH. 11. Kick-off and dr~the 6-1/8 production section as per directional plan to an estimated TD of 11,246' MD (9144' TVD).~ 12. RU E-line and run G~/R,,es/Neu/Den/Sonic logs to TD. ,, 13. Run~~,~,,~ 2.6# solid production liner throughout the 6-1/8 wellbore, bringing the liner top back into the 9-5/8"'~sing. Displace well to clean seawater. POOH LD DP. 14. Test the_4-1/2",,, and 9~5/8"'~sing from the 4-1/2" landing ,c, ollar to surface to 3000 psi for 30 minutes.. 15. Run 3-1/2'/ ', 12._6# 13Cr-80 completion tying into the 4-1/2 liner top. 16. Set packer and test the tubing tb~500 psi and annulus to 3000 psi for 30 minutes. 17. Nipple down the BOPE. Nipple up ~test the tree to 5000 psi. 18. Freeze protect the well to -2200' and s'~re the well. 19. Rig down and move off. Post-Rig Work: 1. MIRU slickline. Pull the ball and rod / RHC plug from 'X' nipple below the new production packer. Install gas lift valves. 2. Perforate -75' of Zone 4 with E-line conveyed guns. Estimated Pre-rig Start Date: 07/10/00 Estimated Spud Date: 07/22/00 William Isaacson Operations Drilling Engineer 564-5521 Alaska Oil & Gas Cons. Commission Revised Sidetrack Scope Riq Operations: 1. MIRU Nabors 7ES. 2. Circulate out freeze protection and displace well to seawater. Set TVVC. 3. Nipple down tree. Nipple up and test BOPE. -J.o 35cO p,~. 4. Pull and lay down 3-1/2" tubing from E-line cut and above. 5. MU 9-5/8" window milling assembly & RIH on 4" DP to drift 9-5/8" casing. POOH standing back assembly. 1. RU E-line. Set BP on E-line at ~9924' MD (set as needed to avoid cutting casing collar). 2. RIH with 9-5/8" Baker bottom-trip anchor whipstock assembly. Orient whipstock as desired and set on BP. Mill window in 9-5/8" casing at -9900' MD. POOH. 3. Kick-off and drill the 8-1/2" intermediate section to Top Sag @ +10477' MD (8464' TVD). F~I' 4. Run and cement a 7",'26# intermediate drilling liner, cemented back into the 9-5/8" casing. 5. Make up and RIH with 6-1/8" directional assembly to the landing collar. Test the 9-5/8" casing and 7" liner from the landing collar to surface to 3000 psi for 30 minutes. 6. Drill the 6-1/8" production section as per directional plan to an estimated TD of 11,194' MD (9144' TVD). F['r' 7. RU E-line and run GRIReslNeulDenlSonic logs to TD. ,~,c7'(;/~' ~G°~--n~ 8. Run and cement a 4 %", 12.6# solid production liner throughout the 6-1/8" wellbore, bringing the liner top back into the 9-5/8" casing. Displace well to clean seawater. POOH LD DP. 9. Test the 4-1/2" and 9-5/8" casing from the 4-1/2" landing collar to surface to 3000 psi for 30 minutes.. 10. Run 3-1/2", 12.6# 13Cr-80 completion tying into the 4-1/2" liner top. 11. Set packer and test the tubing to 3500 psi and annulus to 3000 psi for 30 minutes. 12. Nipple down the BOPE. Nipple up and test the tree to 5000 psi. 13. Freeze protect the well to -2200' and secure the well. 14. Rig down and move off. Post-Ri.q Work: 1. MIRU slickline. Pull the ball and rod / RHC plug from 'X' nipple below the new production packer. Install gas lift valves. 2. Perforate -75' of Zone 4 with E-line conveyed guns, TREE: 4" ClW WELLHEAD: FMC ACTUATOR: BAKER 13-3/8", 68 #Iff, L-80, BTRS Z-21 Current Status I SSSV LANDING NIPPLE I 2191' I (OTIS)( 2.75" ID) ' IKOP: 2900' i MAX ANGLE: 53° O 7400" 3-1/2", 9.2#/ft,13CR, NSCT, TUBING TUBING ID: 2.992" CAPACITY: 0.0087 BBL/FT COMMENTS FROM RWO. NOTE: LOWER TIW PACKER IS FROM ORIGINAL COMPLETION AND WAS NOT RETREIVED DURING THE RWO. THE LOWER TAILPIPE AND TWO "X" NIPPLES MAY BE CORRODED AND LEAK. SEE W/L TELEX DATED 2/27/95. 110,260'1 ~ 7" LINER 9-5/8", 47#/ft, [10,528' J~ L-80, NSCC MCMURRY GLM's (3.5'x1.5') (FMHO)(RK LATCHES) NO'I MD(BKB) I TVDss I DEV. S 13079' 12986' I a° 4 16303' 15494' 1 48° 318532' 16990' 141° 2 1 s599' I Wa6' 1 43° 3.5" 'X'NIPPLE (OTIS) (2.75" ID) 9-5/8" TIW PACKER (HBBP-T)(3.92" ID) 3.5" 'X' NIPPLE (OTIS) ( 2.75" ID) DUMMY SEAL ASSY. W/O SEALS '12' LONG -- 9-5/8" PACKER. (TIW)( 4.00" ID) 3.5" 'X' NIPPLE (OTIS) (2.75" ID) 3.5" 'X' NIPPLE (OTIS) ( 2.75" ID) 3.5" TaG TAIL (OTIS)( 2.992 "ID) (ELMD) lO,111'1 lO,123'1 lO,18o'1 lO,19~'1 lO,217' lO,261' lO,283'1 lO,294'1 10,294' MARKER JOINT 110,874'1 PERFORATION SUMMARY REF LOG: SWS - BHCS - 5-07-89 2 ~/8"1 5 1 10,996-11022' IOPEN/5'7'94 / CET ON DEPTH WITH BHC 05/07/89 OVER PERF. INTERVAL PBTD I 11.359' I ~ 7", 26 #/ft, L-80, BTRS I 11,400'1 -- LINER CORRSION VIDEO CAMERA 5/17/98 HARD BO;I TOM CTMD 4/13/98 111052' J j~.fL ~;-,' ~..,.,,~' Alaska Oil & Gas C~s. Con'~ssion ~c~or~ DATE 05/07/89 REV. BY COMMENTS INITIAL COMP. 5-7-94 PAB ADD PERF 4-4-95 M. LINDER RWO-DOYON 16 4-13-98 JTP =levised PRUDHOE BAY UNIT WELL:Z-21 (31-18-11-12) APl NO: 50-029-21938 ,SEC 18; TN 11N; RGE 12E BP Exploration (Alaska) TREE: 4" ClW WELLHEAD: FMC ACTUATOR: BAKER f 13-3/8", 68 #/ft, ~ L-80, BTRS 3-1/2", 9.2#/ft,13CR, NSCT, TUBING TUBING ID: 2.992" CAPACITY: 0.0087 BBL/FT Pre-Rig 3-1/2" tubing cut at -10,119' Z-21 Pro 110,260'J ~ 7" LINER 9-5/8", 4?#/ft, 110,$28, i~ L-80, NSCC Top of Pre-Rig P&A Cement at -10,575' MD 10,996 - 11022' 11,030 - 11,040' 11,052 - 11,088' 11,088- 11,115' 11,125- 11,135' 11,135- 11,166' OPEN/5-7-94 OPEN/8-10-90 ,i OPEN/5-11-89 . ii OPEN/8-10-90 PERFORATION SUMMARY REF LOG: SWS - BHCS - 5-07-89 I SIZE I SPFI INTERVAL O PEN/SQZ'D 21/8"1 6 I 21/8"1 4 I 5" 4 CET ON DEPTH WITH BHC 05/07/89 OVER PERF. INTERVAL PBTD I 11 ..359' I ~ 7", 26 #/ft, L-80, BTRS I 11,400'1 ~ d Pre-Rig KB. ELEV = 91.82' BF. ELEV -- 57.42' SSSV LANDING NIPPLE I 21 91' I (OTIS)( 2.?5" ID) MCMURRY GLM's (3.5"xl.5") (FMHO)(RK LATCHES) NO'I MD(BKB) I TVDss I DEV. Sl3079' 12986' 18° 416303' 15494' 148° 318S32' 16990' I 41° 219599' 17786. I 3.5" 'X'NIPPLE ~ (OTIS) (2.75" ID) 1 lO,111'1 9-5/8' TIW PACKER (HBBP-T)(3.92" ID) I 10,123' 3.5" 'X' NIPPLE (OTIS) ( 2.75" ID) 110,180' DUMMY SEAL ASSY. W/O SEALS 12' LONG 10,195' 9-5/8" PACKER (TIW)( 4.00" ID) l10,217' 3.5" 'x' NIPPLE (OTIS) (2.75" ID) 110,261' 3.5" 'X' NIPPLE (OTIS) ( 2.75" ID) 110,283' I 3.5" TBG TAIL I 1 o,294'1 (OTIS)( 2.992 "ID) (ELMD) I 10,294' MARKER JOINT I 10,874' LINER CORRSION VIDEO CAMERA 5/17/98 HARD BO'II'OM CTMD 4/13/98 11 1 052' DATE 05/07/89 REV. BY 5-7-94 PAB 4-4-95 M. LINDER 4-13-98 JTP COMMENTS INITIAL COMP. ADD PERF RWO-DOYON 16 Revised PRUDHOE BAY UNIT WELL:Z-21 (31-18-11-12) APl NO: 50-029-21938 SEC 18: RGE 12E BP Exploration (Alaska) TREE: 4-1116"- 5M CIW Chrome WELLHEAD: 13 5/8"- 5M FMC Z-21A Proposed Completion Base Flange Elevation -- 57.42' Nabors 7ES RKB = 84.12' 3-1/2"'X' Landing Nipple with 2.813" seal bore. J 2150' 13-318", 68 #1ft, L-80, BTC 3-1/2" Gas Lift Mandrels with handling pups installed. GAS LIFT MANDRELS # TVD Size Valve Type 1 3334' 1-1/2" RP Shear 2 4834' 1-1/2" DV 5834' 1-1/2" DV 4 6684' 1-1/2" DV 7534' 1-1/2" DV 6 8330' or I jt 1-1/2" DV above pkr assy 3-112" 9.2# 13Cr-80, NSCT Tubing (rerun what was pulled from the well) I +1-9,750' I BAKER 7" x 9-5/8" Liner Tie Back Sleeve ZXP LinerTop Packer 'HMC' Hydraulic Liner Hanger Window Milled from Whipstock Top of Window at +~-9,900' MD Bridge Plug set at +~-9924' MD ------ 3.112" 'x' Landing Nipple with 2.813" seal bore. 7' x 3-1/2" Baker 'S-3' Production Packer 3-1/2" 'X' Landing Nipple with 2.813" seal bore. 3-1/2" 'XN' Landing Nipple with 2.813" seal bore and 2.75" No. Go ID. 3-112" WireLine Entry Guide spaced-out into 4-1/2" liner fie-back sleeve. 7" LinerTop 11o'26o'1 N$cc Cement P&A Plu I+/-10,477'I 7", 26 #/ft, L-80, BTC-Mod I +1-t0,325' I BAKER 5' x 7' Tie Back Sleeve ZXP Liner Top Packer 'HMC' Hydraulic Liner Hanger Pen'orations from 10,996' to 11,166' Top Hard Fill tagged at 11,052' MD 7", 26 #/ft, L80, BTC-Mod ] 11~400' I Date Rev By 11/03/00 WSI Comments Proposed Completion Plug Back Depth I +/-11,110' I 4-1/2" 12.6~tt, 13Cr-80, NSCT I +/-t1,194'1 PRUDHOE BAY UNIT WELL: Z-21A APl NO: 50-029-21938-01 Shared Services Drilling Shared Services Drilling Z-21A Wp 07 I DrillQuest Proposal Data for Z-21A Wp07 Vertical Or~n: Well Hot~nta106gin: Well Meas~'ementUNIs: North Re~erence: True No~h Doglee eeve6ty :. Vertical Section Description: Well Vertical Section Ongn: 0.00 N,O.00 E deaammd Incl. ~zlm. Ve~ticel NoRhtnge Fastings Vertical Dogleg De~h Depth Section Rate 900.,').[J0 42.345 29. J.39 .K097.894.a9~.3) N 37.~9 ~2726.4~ 9~4U.00 ~.000~3.47~8116.H~ ~21.00 N 42.25 E2752~5 10.0~ 10224.4g 3t~.fl~O 56.0~ $3~.10 45~3.~2 N169.9~ ~ 2~32.33 6.NJU 10240.40 36.000 5~.~O~g364.3~ 4~6t.?4N IGO. 16 E ~946.q9 ] 047&67 36.~)0 56.008854~,12 4636.40 N290,8g ~ 3tJ~0.2 i 0.0~ 10674.22 35.015 5b.lb]8709.8~ 4699.59 N)85,12 g 3J9~9 0.000 10091.56 34.000 55.758~7~.12 4705.09 N39~.26 E 320~.J9 6300 10705A9 ~3,t66 55.657~7~5.7~ 4709A3 N 309.b3 ~ 3210.88 lll~3.J? 33.166 55.65? 91~.1~ 4~L00 N ~20,00 ~ 3477.25 O.OOO 4800 - 4500- Scale: linch = 300fl Eastings 0 300 600 '6? I -.(;OK ~' "1 _.~,'}1,] p_~,OLl~ . ...~/ 4 1/2' Li ,,Alibi' ~,~'"~- ..., ~<,;i~','"% ~ 11tg3.3' /./,~-~, Begin Dir@6.000~t~00ft ~047'$.67ffM t ST Exit ~ 10,000°/10Oft, 50.000° TF: ggo0,001t MD, 8091 / - 4800 ~5.73ft TVD MD, 8709.83ft TVD - 4soo ,sgft'l'VD ~ ~--Z Single Well Target Data for Z-21A WPS rg, a~suram~'d ~: Coordlt,~te Target Po~t ~ T~ss ~gs Fas~ ~P Y ~P X Tarot ~mo T~ Shape ~2IA WoO? DriU Em~Point 479g,q2 N 3~1.$~ g 59~41~,00 N 5')q6$?,OO g Pol~on Bou~v Poi~ A 479q,q2N 33J,SJ B 4817.6~N $49.75 ~ S9641 g2.O0 N 599675.00 ~ C 4~0,02 N ~2~.71 R 5964257,~ N D 4R73.~ N 6505 t ~ 59(~242.~ N 5~g975,00 E E 467g.50 N ~59.93 ~ 46~2.8J G ~94,44 N 367./2 H 4~08.75 ~ PobW 9 t 44.12 ~060.00 4Hb0.~) N 620.00 E 5~64227,~9 N 5999~.b7 Boont~ Poh~ A 9144.12 901~0 4fl4] .34 B 9t~,l 2 9060.00 6671.02 N C 91~.12 9060.00 O 91~,12 ~060,00 a941.37 N 676.41 E 5964310.00 N 6O00~)AO E ~tt~ Poin~ g7~.12 K640,0(} 4705.09 N 3qL26 ~ 596~70~0 N 5q07~.00 E Polygon ~no~Pabn A ~724.12 864fJ,~O 4R41.34 R ~24.12 g6~l,O0 · -31^ Wp 07 TD Z.21A Wp 07 TSAD 8OOO 8500 ~dF · eYt,';Z J.?~ 10.O00°/100ft, 50.000° TF: 9900.00ft MD 8097.89ft TVD @ 6.000°/100ft: gg40.00ft MD, 8126.sgft'TVD Eft:'. 826.1', ) 2' TKO Dir: 10224.46ft MD, ~344A0ff TVD Current Well Properties Well: Z-21A 7" Liner 10476.67' MD Horizontal Coordinates: Rm. G~bal Coordlna~: 59~9380,12 N, 5993~9,00 E Ref. Structure Reference: 2155.04 N, 1883.09 W Ref. Geographical Coordinates: 70' 17' 54,2503" N, 149~ 11'42,37~8" W RKB Elevatlon: 84,12ff above Mean Sea Level 84.12ft above Stmctta'e Reference North Reference: Tru~ Norlh Units: Feet .............................. ~': v. '~. ~..-' '.'..;' (.~JL".:. 'i::i)33'::tP.', 1.50 : 111~$.37ft MD, 9144.12ft TVD '.~ I I I 3000 3500 4000 Scale: linch = 500fl Section Azimuth: 52.057° (True North) Vertical Section Sperry-Sun Drilling Services Proposal Data - Z.21A WPS. Z-21A Wp07 ".~ ,-*:',' ' ':' .... ~,,'-~'," ¢"~" '" ;"', ; ' ¢ft'~ ' iF,~'B~'~.~' '~".~i~ ~ · .¢,~ .... ;~¢,:~t' · I'~' ~' ~'~i~ .' . 'c ~l ~ ~'~ ~' ~'~' ' , ~. t ' , '. ' ' ~ ' ,' .' ~ .'"~ : ' ' '' ~ ' ': ' ..... ..... ...... 77 ............ ............. ........... . ~ · . · .... ,. ,. ,... · . ~ __:_:.~ ...... . .......... ~ ~~ · . ~~~~,~ . ~~ .... %~ ....... E~7,';;;";;;f~%~ '* 'T~'":2~;;~;~.':' ..... ~~'~'~¢ "" 28 ~:~ ~2~ ~l N~ · '42 2¢ ~ ......... "'" .... '~ · 2752.~. .: .z:: ~..,~:~t4 ........ E:..~,~.~,u .......... 4 ,,¢~ ....... ~ ........ ~.~ .... ~% .........:..::::: ............. :.;.:.,:..';,~ ~:_~'~:~"_- .... '~;'"'~":~'~6L'~l ......... ¢;~';::':";'":'~E~'; ............ ~'~'~"'~;'~'~:;~';'""~"~' ~'~;~[~'~:{~E'~'~:'E; ......... ;;'~ ~.:?':"7;:;"¢~' ".~,~.. -~ ........ ~, ............. ; ............ ::::--:':-' ......... ~'"'~ ............. E ........ ~':~:~':'~*~"~;'"2'~ .......... ~"~'"';~ ........... ;,'; ............ ~': .... ~' '~' '~' ~ "· ' ' % ' 21: · '.'".6:. ~:~8~¢;:~.':: ~ '%~' :'c ~EE: E~'E'~:'-;'-:'-':'"r~:4:;~2'~,. 4~';7~:'~"" ~:~8~¢2 ~ ~ "'~'":':"'" "~Z'~'~ ":~¢~'~ . . .'.:~. "' :.fE~674,~ .'.~8:1',¢7: '~' ~.~iE" '"~,~6 :.~,83'.. f~' 4~,~ ~¢,'$2E · .8,~t;~ ...:...:.~,c¥~: 3'~9 . . .. . . · . · . ... . · .. . . .. . .8::..: .: '~,~. ·: f~;~. 34 .:'~':, :;,~, ;'6 ~"2.~ ~2 ' :.'.'. :~'¢~ .:;'~5 .:.:'. N :~'~:~ 2~ E ~.'::,~:."":.' '"~92~ '.~.~9 · :'~ ;..:,.~:~.'.:: .~ ~. ~..~... · .~.~ .~'E~'::*%":'~E~:"~E~E~'B"":~'.~'~ ~ ~..",.:,,:' :'.: ~83.~ · ~e.~' · ... ..... . .. ".. :' . ::': . '.':: ....... · :....... ' ':"~:~"': ' ~!~3.~7. · · .......... ~ ~'"' .. ~?? .'.'. .~.86 '.!~.:.: "? .'. ..408.~..ii~'~:: ;,7. N ¢,23.~'7~ F . ~:.D~::' . "~.~' %~77~25. 2 November, 2000 - 12:56 - 1 - DrillQuest North Slope Alaska Alaska State Plane 4 PBU WOA Z Pad ~ Z-2'IA W~$ - Z-2'IA~. PROPOSAL T' Surface Coordinates: 5959360. Keil E (?0° fT' 54.2503' N, f49° lf'42.3758" W) above Mean Sea Level Proposal Ref: pro10550 Sperry-Sun Drilling Services Proposal Report for Z-21A WPS - Z-21A Wp07 North Slope Alaska Measured Sub-Sea Depth Incl. Azim. Depth (~) (~) 9900,00 42,345 29,139 8013,77 9940.00 45.000 33.473 8042.71 10000.00 42.763 37.543 8085,96 10100.00 39.394 45,107 8161.38 10121.41 38.741 46.862 8178.00 10200.00 36,586 53,732 8240.24 10224.48 36.000 56.008 8259.98 10249,49 36.000 56,008 8280,20 10280.14 36.000 56,008 8305,00 10300.00 36.000 56,008 8321.07 VeAical Local Coordinates Global Coordi Depth NoAhings Easfings Nothings (fi) (~) (~) 8097.89 4398.33 N 27.89 E 5963758. 8126.83 4421.90 N 42.25 E 59 8170,08 4455.76 N 66.37E 8245.50 4505.12 N 109.58 E 8262.12 4514.49 N 119.28 8324,36 4545.18 N 8344.10 4553.52 N 8364,32 4561,74N 8389,12 4571,81N 8405.19 4578.34t 10354,30 36,000 56,008 8365.00 8449,12 10400.00 36,000 56,008 8401,97 6486,09 10476.67 36.000 56.008 8464.00 8548,12 10493,15 35.015 56.161 8477.42 8561.54 10500,00 35.015 56.161 8483.02 8567.14 10517,06 35.015 56,161 8497.00 8581,12 10600,00 35,015 56,161 8564,92 8649,04 10674,22 35.015 56.161 8625.71 8709.83 10691,56 34.000 55,758 8640,00 8724,12 10700,00 33.495 55.698 8647.02 8731.14 231.24 E 253,52 E E N N 4675,88 N 4699,59 N 4705.09 N 4707.73 N 298.82 E 302.09 E 310.22 E 349.75 E 385,12 E 393.26 E 397.14 E N 15.47 N N 5963934,11 N 5963940.77 N 5963958.96 N 5963974.27 N 5963999.96 N 5964005.40 N 5964007.63 N 5964013.19 N 5964040.21N 5964064.39 N 596407O.O0 N 5964072.69 N 599396.44 E 599438.99 E 599448.56 E 599485.00 E 599496.74E 599508.82 E 599523.62 E 599533.21E 599559.44E 599581.51E 599618.54 E 599626.41E 599629.64E 599637.70 E 599676.88 E 599711.93 E 599720.00 E 599723.84E Dogleg Rate (°/'lOOft) 10.000 6,000 6.000 6.0O0 6,000 6.000 0.000 0.000 0.000 0.000 0.000 0.000 6.000 0.000 0.000 0,000 0.000 6,000 6.000 Alaska State Plane 4 PBU_WOA Z Pad Vertical Section (ft) 2726.43 2752.25 2792.09 2856,51 2869.93 2917.86 2932,33 2946,99 2964.96 2976,61 3008.45 3035.25 3080,21 3089.76 3093.68 3103,44 3150.91 3193.39 3203, t9 3207.87 Comment o.oooo oo Be~in Dir ~ 6.000°/100ft · 99~0.00ft 1~3D, 8126.83ff TiVD TJC End Dir' 10224 48ft MD, 8344,10~t TVD ' TJB TJA Be~in Dir (a)~6 000°/100ft' 10476.67ft'~lD' 8548 12ft =FVD 7° Liner ' ' TSGR End Dir: 10493 15ft MD, 8561,54ft TVD ' TSHU Be~in Dir ('~6 000°/100ff- 10674.22ff'l~lD; 8709.83ft 1'VD TSAD Taraet - Z-21A Wp 07 TSAD, Geo'logical Con§hued,.. 2 November, 2000.13:36 .3- DrillQuesf 1.05.05 Sperry-Sun Drilling Services Proposal Report for Z-21A WPS - Z-21A Wp07 North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Depth Incl. Azim. Depth Depth Northings Eastings Northings (ft) (ft) (ft) fit) (f~) (ft) 10705,49 33.166 55,657 8651,61 8735,73 4709,43 N 399.63 E 5964074 10800.00 33,166 55,657 8730,72 8814.64 4738,60 N 442.32 E 10858.87 33.166 55.657 8780.00 8864.12 4756.77 N 468.91 E 10900,00 33,166 55,657 8814,43 8898,55 4769,46 N 487.49 E 10930.55 33.166 55.657 8840.00 8924.12 4778.89 N 501.29 E 11000.00 33.166 55.657 8898.14 8982,26 4800.32 N 532.66 N 11002,23 33,166 55,657 8900,00 8984,12 4801,01 N 533 N 11050,01 33.166 55.657 8940,00 9024.12 4815.76 N N 11067,93 33,166 55.657 8955,00 9039.t2 4821,29 N .44 N 11100.00 33.166 55.657 8981,84 9065.96 4831.19 N N 11193.37 33.166 55.657 9060.00 9144.12 4860,00 5964227.89 N All data is in feet unless otherwise stated, Directions and coordin; Vertical depths are relative to Well. Northings and Eastin relative to True North. Well. The Dogleg Severity is in Degrees per 100ft. Vertical Section is from Well and calculated along an Azimuth of 52.057° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 11193.37ft., The Bottom Hole Displacement is 4899.39ft., in the Direction of 7.270° (True). E E 599813.37 E 599827.04 E 599858.12 E 599859,12 E 599880.51E 599888.53 E 599902.88 E 599944.67 E Dogleg Rate (o/'tooft) 6.000 0.000 0.000 0,000 0.000 0.000 0o000 0.000 0.000 0.000 0.000 Alaska State Plane 4 PBU_WOA Z Pad Vertical Section (ft) 3210.88 3262.48 3294.62 3317.08 3333.76 3371.67 3372.89 3398.98 3408.76 3426.27 3477.25 Comment End Dir: 10705 49ft MD, 8735.73ft TVD ' CGOC TZ3 TZ2 HOT OOWC Total Deoth: 11193,37ft MD, 9144.12ft TVD 4 1/2" Liner et - Z-21A Wp 07 TD, ogical Continued... 2 November, 2000 - 13:36 .4 - DrillQuest 1.05.05 Sperry-Sun Drilling Services Proposal Report for Z-21A WPS - Z-21A Wp07 North Slope Alaska Alaska State Plane 4 PBU_WOA Z Pad 2 November, 2000 - 13:36 .5. DrillQuest 1,05.05 Sperry-Sun Drilling Services Proposal Report for Z-21A WPS - Z-21A Wp07 North Slope Alaska Alaska State Plane 4 PBU_WOA Z Pad Comments Measured Station Coordinates Depth TVD Northings Eastings (fi) (~) (~) gg00.00 8097.89 4398.33 N 27.89 E 9940.00 8126.83 4421.90 N 42.25 E 10224.48 8344.10 4553.52 N 167.98 E 10476.67 8548.12 4636.40 N 290.88 E 40493.15 8561.54 4641.74 N 298.82 E 10674.22 8709.83 4699.59 N 385.12 E 10705.49 8735.73 4709.43 N 399.63 E 11193.37 9144.12 4860.00 N 620.00 E Formation Tops Measured Vertical Sub-Sea Depth Depth Depth Northings (~) (~) (~) (~) 10121.41 8262.12 8178.00 4514.49 N 10280.14 8389.12 8305.00 4571.81 N 10354.30 8449.12 8365.00 4596.18 N 10476.67 8548.12 8464.00 4636.40 N 10517.06 8581.12 8497.00 4649.38 N 10691.56 8724.12 8640.00 10858.87 8864.12 8780.00 10930.55 8924.12 8840.00 11002.23 8984.12 8900.00 11050.01 9024.12 8940.00 4705.09 N 4756.77 N 4778.89 N 4801.01 N 4815.76 N Comment ST Exit @ 10.000°/100ft, 50.000° Begin Dir @ 6.000°/100ft TVD End Dir: 10224.48ft MD, Begin Dir @ 6.000°/10Oft: 8548.12ff TVD End Dir: 10493.' Begin Dir @ ID, 8709,83ft TVD End Dir: t TVD Total Depth Formation Name TJC -'- TJB E TJA E TSGR 310.22 E TSHU 393.26 E TSAD 468.91 E CGOC 501.29 E TZ3 533.66 E TZ2 555.25 E HOT Continued... 2 November, 2000- 13:36 - 6- DrillQuest 1,05,05 Sperry-Sun Drilling Services Proposal Report for Z-21A WPS - Z-2fA Wp07 North Slope Alaska Measured Vertical Sub-Sea Depth Depth Depth (ft) (ft) (~t) Formation Tops (Continued) 11067.93 9039,12 8955,00 Northings 4821.29 N Casing details From To Measured Vertical Measured Vertical Depth Depth Depth Depth (ft) (ft) (ft) (ft) <Surface> <Surface> 10476.67 8548.12 <Surface> <Surface> 11193.37 9144.12 Targets associated with this wellpath Target Name Z-21A Wp 07 Drill Eastings Formation Name (ft) 563.34 E OOWC Casing Detail 7" Liner 4 1/2" Liner Mean Sea Level/Global Coordinates: Geographical Coordinates: Target Boundary Point #1 #2 Target TVD fit) 8784.12 8700.00 8784.12 8784.12 8784.12 8784.12 8784.12 8784,12 8784.12 8784.12 Entry Coordinates Northings Eastings (~t) (~t) 4799,92 N 331,51 E 5964164.00 N 599657.00 E 70° 18' 41.4613" N 149° 11' 32.7050" W 4799,92 N 331,51 E 4817.68 N 349.75 E 4889.02 N 626.71 E 4873.70 N 650.51 E 4678,56 N 659,93 E 4662.81 N 640.72 E 4694,44 N 367.12 E 4708,75 N 343,31 E Alaska State Plane 4 PBU_WOA Z Pad Target Target Shape Type Polygon Geological ConiYnued... 2 November, 2000 - 13:36 .7 - DrillQuest 1,05.05 Sperry-Sun Drilling Services Proposal Report for Z-21A WPS - Z-21A Wp07 North Slope Alaska Target Name Targets associated with this wellpath (Continued) Z-21A Wp O7 TD Mean Sea Level/Global Coordinates #1 #2 #3 #4 #5 Level/Global Coordinates: inates: Target Boundary Point #I ~2 ~3 ~4 Target Ent TVD N~ (ft) 9144.12 9060.00 9144.12 9t44.12 9144.12 9144.12 )N 5964182.00 N 5964257.00 N 5964242.00 N 5964047.00 N 5964031.00 N 5964059,00 N 5964073.00 N 70° 18' 41,4613" N 70° 18' 41.6359" N 70° 18' 42,3375" N 70° 18' 42.1868" N 70° 18' 40.2674" N 70° 18' 40.1125" N 70° 18' 40.4238" N 70° 18' 40.5646" N 4860.00 N 5964227,89 N 70° 18' 42.0520" N 4841.34 N 4671.02 N 4636.13 N 4941,37 N dinates Eastings (ft) 599657.00 E 599675.00 E 599951.00 E 599975,00 E 599987,00 E 599968,00 E 599694,00 E 599670,OO E 149° 11' 32.7050" W 149° 11' 32,1729" W 149° 11' 24,0931" W 149° 11' 23.3988" W 149° 11' 23.1245" W 149° 11' 23.6849" W 149° 11' 31.6664" W 149° 11' 32.3610" W 620.00 E 599944.67 E 149° 11' 24.2890" W 300.05 E 322.80 E 692.38 E 676,41 E Alaska State Plane 4 PBU_WOA Z Pad Target Target Shape Type Polygon Geological Confinued.. . 2 November, 2000,13:36 - 8- DrillQuesf f,05.05 Sperry-Sun Drilling Services Proposal Report for Z-21A WPS - Z-21A Wp07 North Slope Alaska Target Name Targets associated with this wellpath (Continued) Z-21A Wp O7 TSAD Mean Sea Level/Global Coordinates #1 #2 #4 Geographical Mean Sea Mean linates: obal Coordinates Geographical Coordinates Target Ent TVD (ft) 8724.12 8640.00 8724.12 8724.12 8724.12 8724.12 8640.00 8640.00 8640.00 8640.00 N 5964035.00 N 5964005.00 N 5964310,00 N 70o18'41.8687"N 70o18'40.193E'N 70o18'39.8500"N 70o18'42.8523"N 4705.09 N 5964070.00 N 70° 18' 40.5265" N 4841.34 N 4671.02 N 4636.13 N 4941.37 N 5964205,00 N 5964035.00 N 5964005.00 N 5964310.00 N 70°18'41.8687"N 70°18'40,193E'N 70'18'39.850~'N 70°18'42,8523"N dinates Eastings 599625.00 E 599650.00 E 600020.00 E 600000,00 E 149° 11'33.6225"W 149° 11'32.9591"W 149o11'22,1783"W 149' 11'22.6432"W 393.26 E 599720.00 E 149° 11'30.9037"W 300.05 E 322,80 E 692.38 E 676.41E 599625,00 E 599650,00 E 600020,00 E 600000,00 E 149'11'33.6225"W 149' 11' 32,9591"W 149' 11' 22,1783"W 149' 11'22,643~'W Alaska State Plane 4 PBU_WOA Z Pad Target Target Shape Type Polygon Geological 2 November, 2000 - 13:36 - 9 - DrillQuest 1,05.05 Sperry-Sun Drilling Services Anticollision Report -- I I I ~ ~"0[0 I I : : I I I I I I II [~: I llI ~]~l I I : : IlI Ill i l~]~i~[:lI : Ii ~l~I~]~I I l:l I l~ I :l :: I I lI I l:}[ ~l i I I II:iI'~i II I~I · ., · i P. rud/~ Be/' . . .. .l: .. : . .,.,~.,~..,s~,,~ · ~sz,,~. ·· · .... :'.:'¢,d~;,~i~:~.~,.::.;;,~.f.':.':"::.w..~i~i'~-~t:r..~,~'~..o~:.ii"...: '.':i.. :. 'i" ::' Refm:eOee Weil~ '.Z-.2{ i · . .' .... · Yerti~idO'¥D):~.~.f~rL'T~;,~ · . ',.Z;2~A. WPs..FA, 1..aboveMe~..:.See .L~/~( ' .. : Ref~re~¢eWe, llp?~h; PP,~n'.Z-21A '. " · '": '.: · ":.". ':.";"':: . '.." : '": :'.'.. ..' ". ' " :'. '"Dh:.' :OrarJ~'..' i:' Gl .oBAL'sCAN APPLIED: All ~llp~th~ within 200'+ 100/1000 of reference - There ar~ 1111~mMls in this J~iEla: Z-21A Wp 07 Interpolation Method: MD interval: 100.0 ft I~.rro£ Model: I$CWSA Ellipse Depth Range: 9900.0 to 11193.4 ft Scan Method: High Side + Azimuth M~ximmu Radim: 10000.0 ft ~rror ~urf,,ee: Ellipse + Casin~ Casing Points ............... '~i~"'~'~i' ................ ~'~ ................ ~:~: ................ :.iii~'~':~i~~ ........ :~':':'i' ......... ~;;~':.'"':'":":':':.?':'::":~?:'"i:'1'7 ................. ~ ............ : ......... '"':': ......... ":' ........ ::'"'T'?''''.''''''~'': ........................ %7 ......... i ............. ?y!' ......... y ..... . '~t · ft · in · Iri .~ : ' ".." '.'" "..'....." .'...'. ',' i'... i' '.'.: :" '. ":.'.'.: '11~'4~° ....... ~;.0 ........ 4.~;~0 6.000 '4i/2" ' ........................ ' .... Plan: Z-21A W p 07 Date Composed: 11/01/2000 Version: 1 Principal: Yes Tied-to: From: Definitive Path Summary < ......... · .--~. OR~etWelipa~ -, '-- .... · ~ ..' PB Z Pad Z-01 PB Z Pad Z-02A PB Z Pad Z-02 PB Z Pad Z-03 PB Z Pad Z-04 PB Z Pad Z-05 PB Z Pad Z-06 PB Z Pad Z-101 EST PB Z Pad Z-11 PB Z Pad Z-12 PB Z Pad Z-13 PB Z Pad Z-14A PB Z Pad Z-14B PB Z Pad Z-14 PB Z Pad Z-15 PB Z Pad Z-17 PB Z Pad Z-19 PB Z Pad Z-20 PB Z Pad Z-21 PB Z Pad Z-22A PB Z Pad Z-22B PB Z Pad Z-22 PB Z Pad Z-23A PB Z Pad Z-23 PB Z Pad Z-24 PB Z Pad Z-25 PB Z Pad Z-26 PB Z Pad Z-27 PB Z Pad Z-28 PB Z Pad Z-29 PB Z Pad Z-30 PB Z Pad Z-31A PB Z Pad Z-31 PB Z Pad Z-32A PB Z Pad Z-32BL1 PB Z Pad Z-32BPB1 PB Z Pad Z-32BPB2 PB Z Pad Z-32BPB3 PB Z Pad Z-32B PB Z Pad Z-32 PB Z Pad Z-33A PB Z Pad Z-33 Wellp~¢l~ .' " ' MD ' 'M'D : : '.". it ." · 'ff.' CHEV18111;~ V:~ ....... Z-01 Vl Z-02A Vl Z-02 Vl Z-03 V4 Z-04 Vl Z~05 Vl Z-06 Vl Z-101 V0 Plan: Z-101 W Z-ll Vl Z-12 V1 Z~13 V1 9964.4 9907.6 Z-14A V1 10558.9 9307.9 Z~14B V1 Z-t4 V1 10558.9 9307.9 Z-15 V1 10487.0 9007.7 Z-17 VI Z-19 V1 9950.0 9802.9 Z~20 V1 10640.6 9707.3 Z-21 V3 9900.0 9907.7 Z-22AVl 9900.0 10899.6 Z-22B V1 9900.0 10899.6 Z-22 V1 9900,0 10899.6 Z~23A V1 Z-23 V1 Z-24 V1 10705,5 9707,7 Z-25 V1 10444.6 9607,4 Z-26 V1 10666.3 9605.3 Z-27 V1 9940.0 9707.6 Z-28 V1 9900.0 10007,6 Z-29 V1 9940,0 10007.7 Z-30 Vl 9900.0 10404.6 Z-31A V3 Plan: Definit 9900.0 10399.7 Z-31 V1 9900.0 10399.7 Z-32A V5 9900.0 10404.3 Z-32BL1 V2 9900.0 10804.3 Z-3?_.BPB1 V2 9900.0 10804.3 Z-32BPB2 V2 9900.0 10804.3 Z-32BPB3 V2 Plan: Unde 9900.0 10704.3 Z-32B V2 9900.0 10804.3 Z-32 V2 9900.0 10404.3 Z-33A V1 Z-33 V1 1331.4 233.3 1116.5 Pass: Major Risk 3802.9 188.0 3623.6 Pass: Major Risk 3802.9 188.0 3623.6 Pass: Major Risk 4515.1 219.5 4298.0 Pass: Major Risk 2528.3 256.5 2338.6 Pass: Major Risk 6280.8 863.2 5556.0 Pass: Major Risk 0.0 No Reference Casings 3725.6 262.2 3511.7 Pass: Major Risk 3725.6 262.2 3511.7 Pass: Major Risk 3725.6 262.2 3511.7 Pass: Major Risk 2249.4 206.3 2050.6 Pass: Major Risk 2215.0 216.2 2000.3 Pass: Major Risk 3028.6 213.1 2817.0 Pass: Major Risk '1617.7 239.8 1440.5 Pass: Major Risk 1349.4 199.5 1198.3 Pass: Major Risk 1079.0 229.5 885.3 Pass: Major Risk 3291.5 265.7 3092.3 Pass: Major Risk 2880.0 255.1 2674.9 Pass: Major Risk 2880.0 254.9 2675.1 Pass: Major Risk 1474.6 220.1 1263.3 Pass: Major Risk 2258.9 219.5 2049.7 Pass: Major Risk 2269.1 221.9 2058.1 Pass: Major Risk 2266.9 220.9 2056.6 Pass: Major Risk 2074.0 222.9 1860.7 Pass: Major Risk 2258.9 219.5 2049.7 Pass: Major Risk 1437.6 224.7 1213.4 Pass: Major Risk STATE OF ALASKA ALASKa' ?IL AND GAS CONSERVATION CO~"ISSION '~., PLICATION FOR SUNDRY APPRO~, .- 1. Type of Request: [] Abandon [] Alter Casing [] Change Approved Program [] Suspend [] Repair Well [] Operation Shutdown Name of Operator BP Exploration (Alaska) Inc. 3. Address P.O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface [] Plugging [] Time Extension [] Pull Tubing [] Variance [] Re-Enter Suspended Well [] Stimulate [] Perforate [] Other Plug Back for Sidetrack 5. Type of well: [] Development [] Exploratory [] Stratigraphic [] Service 6. Datum Elevation (DF or KB) KBE -- 91.82' 7. Unit or Property Name Prudhoe Bay Unit 8. Well Number Z-21 9. Permit Number 189-042 10. APl Number 50-029-21938-00 11. Field and Pool Prudhoe Bay Field / Prudhoe Bay Pool 12. 719' SNL, 1669' EWL, SEC. 19, T11N, R12E, UM At top of productive interval 4154' NSL, 2052' EWL, SEC. 18, T11 N, R12E, UM At effective depth 4298' NSL, 2179' EWL, SEC. 18, T11N, R12E, UM At total depth 4487' NSL, 2316' EWL, SEC. 18, T11 N, R12E, UM Casing RECEIVED JUL 0 7 OC) Alaska 0ii & Gas Cons. · An~h~ Present well condition summary Total depth: measured 11400 feet Plugs (measured) true vertical 9193 feet ORIGINAL Effective depth:measured 11052 feet Junk (measured) Fill at 11052' (04/98) true vertical 8934 feet Length Size Cemented MD TVD Structural Conductor 11 O' 20" 11 O' 11 O' Surface 2657' 13-3/8" 3684 cu ft Permafrost 2657' 2657' Intermediate 10528' 9-5/8" 2268 cu ft Class 'G' 10528' 8557" Production Liner 1141' 7" 378 cuft Class 'G' 10259' - 11400' 8364' - 9193' Perforation depth: measured 10996'- 11022', 11030'- 11040', 11052'- 11088', 11088'- 11115', 11125'- 11135', 11135'- 11166' true vertical 8894' - 8913', 8919' - 8926', 8934' - 8961 ', 8961' - 8980', 8988' - 8995', 8995' - 9018' Tubing (size, grade, and measured depth) 3-1/2", 9.2#, 13Cr to 10294' Packers and SSSV (type and measured depth) 9-5/8" TIW 'HBBP-T' packer at 10123'; 9-5/8" TIW packer at 10217'; HES 3(DB' SSSVLN at 2191' 13. Attachments [] Description Summary of Proposal Estimated date for commencing operation July 7, 2000 !16. If proposal was verbally approved Name of approver Date Approved Contact Engineer Name/Number: 9ill Isaacson, 564-5521 [] Detailed Operations Program [] BOP Sketch I15. Status of well classifications as: [] Oil [] Gas [] Suspended Service Prepared By Name/Number: Michael Williams, 564-4657 17. I hereby.certify that the foregoing is true and correct to the best of my knowledge Signed Dan Stone ~----------?----- ~ Title Senior Drilling Engineer Conditions of Approval: Notify Commission so representative may witness Plug integrity ~ BOP Test~ Location clearance Mechanical Integrity Test Subsequent form required 10- of the Commission Date "~/~) ~ Approval No..~/(~0 - Commissioner Date Form 10-403 Rev. 06/15/88 Submit In Triplicate l DATE I / CHECK NO. ,' ~0170951 H 170951 ( (' ~'"~"°° I I VENDOR ALASKAST14 O0 DATE IN.ICE I CRED~ MEMO DE~RI~ION GRO~ DISCOUNT NET )&~900 CKO6~9OOA 100.00 100.00 HANDLINg INST' PH i~RRI HUBBLE X¢628 ; ,EAWAO~DC,E~ISINPAYf~~GE~G&EOABO~. m~eZfil~] 100.00 100.,00 [o:?':,Tl~;;d::::;.;r .ALASKA STATE .'~.DE~T...:'.:~E=.: R.',,'.~E~E ~E~i;: '!:?i;: ~C:C"dil!ii;i:;: ::~.;!:'::,.jiii?,i? :;;:? :?:;i;..:?..' :.i.;.;'?.i.. ',:~i;..:?.;'"":;?';~!:.! ~: ~ ::!i:? ?..; :..::..". ~::O0:::~i; 'i~:ORCUP I N~::.'ii!i!~R::'i;~;~, .;?:::;:," ;":::':; ill!?.:'? ANCHORAGE AK '9950:1-:3120 "" ], ?o q s ],"" ,:ON~O~RqS": O0&t,t, WF~_I PERMIT CHECKLIST FIELD & POOL ~, L.//~ AD~NISTRATION . ,,.~-~. . 2. 3. 4. 5. 6. 7. COMPANY . 9. 10. 11. DATE 12. 7-1 WELL NAME '~---~-./,~ PROGRAM: exp ENGINEERING 14. 15. 16. 17. ... 18. ',.~ 19. ,, 20. ;"' 21. : .... 22. "~" 23. 24. 25. _ ;)~3G 27. 28. 29. GEOLOGY 30. 31. 32. DATE 33. INIT CLASS ~:~EV ~ ~/~--~ GEOL AREA ,, ,, Permit fee attached .................... appropriate.'~ Lease number ................. Unique well name and number .................. Well located in a defined pool ............... N ' ' ' . .. N Well located proper distance from drilling unit boundary. Well located proper distance from other wells .......... .N. Sufficient acreage available in drilling unit ............ N If deviated, is wellbore plat included ............... Operator only affected party ................... Operator has appropriate bond in force ............. Permit can be issued without conservation order ........ (,~N Permit can be issued without administrative approval ...... Can permit be approved before 15-day wait ............ Conductor string provided ................... Surface casing protects all known USDWs ........... CMT vol adequate to circulate on conductor & surf csg ..... CMT vol adequate to tie-in long string to surf csg ........ CMT will cover all known productive horizons .......... Casing designs adequate for C, T, B & permafrost ....... Adequate tankage or reserve pit ................. If a re-drill, has a 10-403 for abandonment been approved... Adequate wellbore separation proposed ............. If diverter required, does it meet regulations .......... dev v/ redrll v/ serv wellbore seg ann. disposal para req UNIT# ~)_//~,~ ~:_c~--(~ ON/OFF SHORE Drilling fluid program schematic & equip list adequate ..... BOPEs, do they meet regulation ........... . ..... BOPE press rating appropriate; test to .~i~,,..) psig. N Choke manifold complies w/APl RP-53 (May 84) ........ N · ~" N ., Work will occur without operation shutdown ........... Y N Is presence of H2S gas probable ................. Permit can be issued wlo hydrogen sulfide measures ..... y Data presented on potential overpressure zones ....... Seismic analysis of shallow gas zones .......... _. ~/~,. / Y N __~].,.-.,*---..,,~]_~ ~)j~..~:,,..,/~ ~.,,,~,--~.. ~..,~. -- Seabed condition survey (if off-shore) ...... ._ ._,~_/,,J Contact name/phone for weekly progress report~J~ploratory only] Y N Y N ANNULAR DISPOSAL35. With proper cementing records, this plan .... (A) will contain waste in a suitable receiving zone; ....... AP~ DATE (B) will not contaminate freshwater; or cause drilling waste... 1~:?~1 '1 ' to surface; . ,:.'. (C) will not impair mechanical integrity of the well used for disposal; (D) will not damage producing formation or impair recovery from a pool; and (E) will not circumvent 20 AAC 25.252 or 20 AAC 25.412. ." GEOLOGY: ENGINEERING: UICIAnnular COMMISSION: Comments/Instructions: rn~ c:~nsoffice\wordian~diana\checklist (rev. 02117100) Well History File APPENDIX Information of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history' file. To improve {he roadability of the Well History file and to simplify finding information, informati;3n of this ', . , nature is accumulated at the end of the file under APPENDIX. No, special effOrt has been made to chronologically organize this category of information. Sperry-Sun Drilling Services LiS Scan U:ility SRevision: 3 $ LisLib SRevision: 4 £ Sat Apr 27 !1:51:5r 2002 Keel Header Service name ............. LISTPE Date ..................... 02/04/27 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Previous Reel Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Tape Header Service name ............. LISTPE Date ..................... 02/04/27 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Previous Tape Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Scientific Technical Services Physical EOF Comment Record TAPE HEADER Prudhoe Bay Unit MWD/MAD LOGS WELL NAME: API NUMBER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD MWD RUN 2 AK-MM-00265 M. HANIK T. ANGLEN lST STRING 2ND STRING 3RD STRING PRODUCTION STRING REMARKS: 1. Z-21A 500292193801 BP Exploration (Alaska), Inc. Sperry Sun 27-APR-02 MWD RUN 3 AK-MM-00265 R. KRELL T. ANGLEN 19 lIN 12E 719 1669 .00 85.12 56.62 OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 9.625 9916.0 8.500 7.000 10458.0 ALL DEPTHS ARE MEASURED DEPTHS (MD) UNLESS OTHERWISE STATED. 2. MWD RUN 1 IS USED TO SET WHIPSTOCK AND MILL WINDOW AND IS NOT PRESENTED. MWD RUNS 2 & 3 ARE DiRECTiONAL WITH DUAL Gk~A k%Y 'DGR' UTiLiZiNG GEiGER MUELLER TUBE DETECTORS AN2 ELECTROMAGNETIC WAVE RESiSTiViTY PHASE 4 ~EWR4~. 4. Gk~. KAY (SGRCi iS LOGGED BEHIND CASING FROM 9655' MD, 7896' TVD TC 9916' MD, 8110' TVD. 5. GAMMA RAY (SGRC) FROM 9655' MD, 7896' TVD TO 9992' MD, 8115' TVD WAS LOGGED WHILE RUNNING IN THE HOLE TO DRILL MWD RUN 2. 6. GAMMA RAY (SGRC) IS LOGGED BEHIND CASING FROM 10432' MD, 8530' TVD TO 10458' MD, 8552' TVD. RESISTIVITY DATA (EWR4) IS LOGGED BEHIND CASING FROM 10424' MD, 8524' TVD 10458' MD, 8552' TVD. 7. DIGITAL DATA AND LOG DATA IS DEPTH CORRECTED TO THE PDC GR LOG OF 12/11/00 WITH KBE = 85.12' A.M.S.L.. THIS WELL KICKS OFF FROM Z-21 AT 9916' MD, 8110' TVD (TOP OF WHIPSTOCK). ALL MWD LOG AND HEADER DATA RETAINS THE ORIGINAL DRILLER'S DEPTH REFERENCE 8. MWD RUNS 1 - 3 REPRESENT WELL Z-21A WITH API# 50-029-21938-01. THIS WELL REACHED A TOTAL DEPTH OF 11145' MD, 9141' TVD. SROP = SMOOTHED RATE OF PENETRATION SGRC = SMOOTHED GAMMA RAY COMBINED SEXP = SMOOTHED PHASE SHIFT DERIVED RESISTIVITY ( EXTRA SHALLOW SPACING ) SESP = SMOOTHED PHASE SHIFT DERIVED RESISTIVITY ( SHALLOW SPACING ) SEMP = SMOOTHED PHASE SHIFT DERIVED RESISTIVITY ( MEDIUM SPACING ) SEDP = SMOOTHED PHASE SHIFT DERIVED RESISTIVITY ( DEEP SPACING ) SFXE = SMOOTHED FORMATION EXPOSURE TIME File Header Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/04/27 Maximum Physical Record..65535 File Type ................ LO Previous'File Name ....... STSLIB.000 Comment Record FILE HEADER FILE NUMBER: EDITED MERGED MWD Depth shifted and clipped curves; all bit runs merged. DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH GR 9647.0 11098.0 FET 9898.0 11105.5 RPD 9898.0 11105.5 RPM 9898.0 11105.5 RPS 9898.0 11105.5 RPX 9898.0 11105.5 ROP 9941.5 11140.5 $ BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) BASELINE 2EPTH 964-.2 iC244.f 10252.5 I0263.~ 10269.0 10281.0 10283.5 10308.5 10311.0 10317.0 10326.0 10336.0 10338.5 10341.5 10347.5 10351.0 10373.5 10387.0 10393.5 10395.5 10402.0 10411.5 10413.5 10428.0 10438.0 10442.5 10446.0 10450.5 10454.5 10462.0 10465.5 10479.5 10493.5 10498.0 10504.5 10516~5 10518.5 10524.0 10537.0 10541.0 10545.5 10549.0 '10554.0 10576.0 10583 5 10584 5 10585 5 10587 0 10590 0 10591 5 10597 5 10600 0 10603 0 10606.0 10610.5 10612.0 10616.5 10624 0 10626 0 10627 5 10630 0 10632 0 10635 0 10637 5 10639 5 10643 0 10644 0 10652 0 10659 0 10671 0 10673 0 10681 5 10687 0 10691 0 EQUIVALENT UNSHiFTED DEPTH GR 9655.0 !0252.~ 10261.5 10272 : ._. 10278.5 10290.5 10293.0 10317 0 10320 5 10324 0 10335 0 10345 0 10347 0 10350 5 10356 5 10359 5 10382 0 10397 0 10402 5 10404 0 10410.5 10419.5 10422.0 10433.5 10445.0 10451.0 10454.5 10459.0 10463.0 10470.0 10474.0 10487.5 10501.5 10506.5 10513.5 10525.5 10528.0 10534.5 10546.5 10550.0 10554.5 10557.5 10563.0 10584.0 10591.5 10592.5 10593.5 10595.0 10598.0 10599.5 10606.0 10608.5 10611.5 10613.0 10617.5 10619.0 10623.0 10630.5 10632.5 10634.0 10636.0 10638.0 10641.5 10643.5 10646.0 10649.5 10650 5 10658 5 10665 0 10677 0 10679 5 10688 0 10694 0 10698 0 !0693.f 10695.[ !0697.S 107'1.5 !0710.C 10712 C' 10715 5 10717 5 10723 5 10726 0 10734 0 10737 5 10744 0 10751 0 10755 0 10759 0 10764 5 10775 5 10778 0 10780 5 10784.0 10791.0 10797.0 10804.5 10817.5 10824.5 10828.5 10830.0 10833.0 10842.5 10849.0 10862.5 10874.0 10879.0 .10884.5 10904.0 10911.0 10913.5 10929.5 10941.5 10948.0 10951.0 10980.0 10987.5 10993.0 11002.0 11021.5 11035.5 11041.0 11043.5 11050.5 11059.5 11060.5 11063.5 11066.5 11069.0 11073.5 11080.5 11082.5 11084.0 11097.5 11140.5 $ # MERGED DATA SOURCE PBU TOOL CODE MWD MWD $ # i0700.C iC702.5 !0704.C 10'i$.5 1071-.5 10719.5 10723.0 10726.0 10732.0 10734.0 10740.5 10744.5 10750.5 10759,0 10762,5 10765.5 10770.5 10781.5 10784.5 10787.0 10791.0 10796.5 10804.0 10811.5 10824.5 10831.0 10836,0 10837.0 10840.5 10849,0 10855.5 10869.0 10880.0 10885.5 10890.0 10910.5 10917.0 10919.0 10936.0 10947.5 10954.0 10956.0 10984.0 10991.0 10999.0 11008.0 11027.0 11041.0 11046.5 11049.0 11056.5 11064.5 11066.0 11069.0 11073.0 11074.5 11080.0 11086.0 11088.0 11089.0 11102.0 11145.0 BIT RUN NO MERGE TOP MERGE BASE 2 9655.0 10458.0 3 10458.5 11145.0 REMARKS: MERGED MAIN PASS. $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... C Logging Dlrec~ion ................. Down Optical log ~epth units ........... Fee~ Data Referense Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...O Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD FT/H 4 ! 68 4 2 GR MWD API 4 I 68 8 3 RPX MWD OHMM 4 1 68 12 4 RPS MWD OHMM 4 1 68 16 5 RPM MWD OHMM 4 1 68 20 6 RPD MWD OHMM 4 1 68 24 7 FET MWD HR 4 1 68 28 8 Name Service Unit Min Max DEPT FT 9647 11140.5 ROP MWD FT/H 0.47 250.92 GR MWD API 11.04 461.01 RPX MWD OHMM 0.1 1798.95 RPS MWD OHMM 0.11 1918.68 RPM MWD OH~4 0.89 2000 RPD MWD OHMM 0.22 2000 FET MWD HR 0.32' 65.06 Mean 10393.8' 59.2654 84.4148 10.2541 14.1558 57.5708 44.5244 3.97141 First Reading For Entire File .......... 9647 Last Reading For Entire File ........... 11140.5 File Trailer Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/04/27 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.002 Nsam 2988 2399 2903 '2416 2416 2416 2416 2416 First Reading '9647 9941.5 9647 9898 9898 9898 9898 9898 Last Reading 11140.5 11140.5 11098 11105.5 11105.5 11105.5 11105.5 11105.5 Physical EOF File Header Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/04/27 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.001 Comment Record FILE HEADER FILE NUMBER: 2 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 2 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 9655.0 RPX 9906,0 FET 9906.0 RPD 9906.0 RPS 9906.0 RPM 9906.0 STOP DEPTH 10432 0 10424 5 10424 5 10424 5 10424 5 10424 5 ROP $ LOG HEADER DATA 9949.5 DATE LOGGED: SOFTWARE SURFACE SSFTWARE VERSION: DOWNHOLE SOFTWARE VERSiOK: DATA TYPE !MEMORY OR REAL-TiME%: TD DRILLER (FT): TOP LOG iNTERVAL (FT): BOTTOM LOG iNTERVAL BIT ROTATING SPEED HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: !C458.0 TOOL STRING (TOP TO BOTTOM~ VENDOR TOOL CODE TOOL TYPE DGR DUAL GAMMA RAY EWR4 ELECTROMAG. RESIS. 4 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TEI~MPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .liN Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type.,.0 Name Service Order 06-DEC-0C Insite 4.05.5 65.44 Memory 10458.0 32.5 42.7 TOOL NUMBER PB01721HWGVRA6 PB01721HWGVRA6 8.'500 10458.0 LSND-HT 10.90 40.0 9.6 18'0'0 2.6 2.250 1.017 2.000 1.500 Units Size Nsam Rep Code Offset Channel 0 1 4 2 8 3 12 4 16 5 20 6 24 7 28 8 DEPT FT 4 1 68 ROP MWD020 FT/H 4 1 68 GR MWD020 API 4 1 68 RPX MWD020 OHMM 4 1 68 RPS MWD020 OHMM 4 1 68 RPM MWD020 OHMM 4 1 68 RPD MWD020 OHMM 4 1 68 FET MWD020 HR 4 1 68 74.0 172.0 70.0 65.0 First Last Name Service Unlt ~lin Max DEPT FT 9655 10458 RO? 5fWDC20 FT/K 0.4- 143.13 GK .~D02C APi 35.62 164.85 RPX MWD02C OH~_: i.~t2 !798.95 RPS .~D020 OH!-nZ. C,.96 19i8.66 RPM MWDG2O OH.W/~-. C.89 2000 RPD MWD02C OH~_( C.22 2000 FET MWDC2? HR C.4~ 33.26 First Reading Fcr Entire File .......... 9655 Last Reading Fcr Entire File ........... 10458 File Trailer Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 02/04/27 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.003 Mean 10056.5 44.4058 99.9566 5.13586 9.75428 '4.4622 3!.1251 3.66838 Nsam 1607 10!~ 1555 1038 1038 1038 1038 1038 Reading 9655 9949.5 9655 9906 9906 9906 9906 9906 Reading 10458 10458 10432 10424.5 10424.5 10424.5 