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197-025
TTT RR AA NN SS MM II TT TT AA LL FROM::Sandra D. Lemke, ATO-704 TO:: Abby Bell ConocoPhillips Alaska, Inc. AOGCC P.O. Box 100360 330 W. 7 th Ave., Suite 100 Anchorage AK 99510-0360 Anchorage, Alaska 99501 RE: Tarn 2, 3, 4 DATE: 12/14/2021 Transmitted: Exploration - North Slope, Alaska Via SFTP 114MB on CT scan folder Delivered at the request of AOGCC (M. Guhl) and with approval from COPA manager Ari Mitra. Transmittall instructions: please promptly sign, scan, and e-mail to Sandra.D.Lemke@conocophillips.com CC: Tarn 2,3,4 - e-transmittal well folder Receipt: Date: Alaska/IT-Data Support|ConocoPhillips Alaska |Office: 907.265.6947; Mobile 907.440.4512 12/15/2021 37' 7DUQ 7DUQ 7DUQ (6HW By Abby Bell at 3:15 pm, Dec 15, 2021 TTT RR AA NN SS MM II TT TT AA LL FROM::Sandra D. Lemke, ATO-704 TO:: Abby Bell ConocoPhillips Alaska, Inc. AOGCC P.O. Box 100360 330 W. 7 th Ave., Suite 100 Anchorage AK 99510-0360 Anchorage, Alaska 99501 RE: Tarn 2, 3, 4 DATE: 12/14/2021 Transmitted: Exploration - North Slope, Alaska Via SFTP 114MB on CT scan folder Delivered at the request of AOGCC (M. Guhl) and with approval from COPA manager Ari Mitra. Transmittall instructions: please promptly sign, scan, and e-mail to Sandra.D.Lemke@conocophillips.com CC: Tarn 2,3,4 - e-transmittal well folder Receipt: Date: Alaska/IT-Data Support|ConocoPhillips Alaska |Office: 907.265.6947; Mobile 907.440.4512 12/15/2021 37' (6HW By Abby Bell at 3:15 pm, Dec 15, 2021 THE MATERIAL UNDER THIS COVER HAS BEEN MICROFILMED ON OR BEFORE JANUARY 03,2001. M p I A T E F_ IA L U N D W T H IS M ARK E C:LORI~ILM.DOC AOGCC Individual Well Page: 1 Geological Materials Inventory Date: 04/07/99 T / PERMIT DATA T DATA PLUS RUN RECVD D .............. 97-025 EOW RPT L~EP/Q.~H 05/13/97 97-025 DRY DCTCH ~"120-6150 #973 03/20/97 97-025 CORE CHIPS .S/-85 #973 04/07/97 97-025 DIR SRVY ~1.08-6150 05/02/97 / 97-025 7706 ~ND/CNT/DAS 06/12/97 ~-o~ ~ ~o-~o o~/~/~ ~-o~s c~ ~~o-~ o~/~/~ ST-O~ CN ~87-~ ~ 0~/~/~7 DSSI ~87-~ ~ 0~/~/S7 97-025 ST-O=S MIC~OmOS ~ST-~ ~ o~/~/s7 97-025 CORE CHIP DESCRP ~ORE 1 5459-5546 06/12/97 97-025 CORE DESCRIPTION'S5458-5538 - 07/29/97 97-0~s CO~E ~YS~S ~O~E~ 7/24/97 07/29/97 ~CO M~Im ~ 08/04/S7 97-025 8048 97-025 RET ~28-5505 1 08/21/97 97-025 CORE DESCRIPTION~459-5547.6 08/21/97 97-025 MRIL j(C) 5390-5560 1 08/21/97 97-025 RFT ~/Ai~CO 08/21/97 10-407 ~RfCOMPLETION DATE @ 3/~/~ Q ~/2 lq ~/ DAILY WELL OPS ~ )itl/~/ TO 3/~/~?/ @ ~// /~/ Are dry ditch samples required? ~~np And received?~~ ....... no Was the well cored? ~no Analysis & description received? _~y~yno Are well tests required? ~l~es ~°~°3_~Received? yes ~ ~1~'~. .~ -. / .... / 0~ ~ Well is in compliance ~ Initial COMMENTS BOX STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION C,,.,MMISSION WELL COMPLETION OR FIECOMPLETION REPORT AND LOG i'1. Status of Well ClassificatiOn of Service Well [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number ARCO Alaska Inc. 97-25 397-59 '3. Address 8. APl Number P. O. Box 100360, Anchorage, Alaska 99510 50-103-20249 4. Location of well atsudace ............ i-- iiiii?~¥1!i:~'~ - · ....... ~ 9. unit °r Lease Name 1120' FNL, 510' FWL, Sec. 1, TDN, R7E, UM,t ~?i ~! : !i~ Exploration At top of productive interval ~ .......... ~ !I ~~~ 10. Well Number same as above i u~Fi~..~.~ .~ Tarn 4 At total depth~i r._. ........ ...... :"" ~,~ i ~ , 'J 1 Field and Pool same as above ...... ~ ...... ~ i~l~, .HT~.~/,~Q~.~ · 5. Elevation in feet"(indicat'~"~;B, DF, etc.) 16. Lease Designation and Serial Nol Exploration RKB 28', Pad 128'! ADL 375073, ALK 4297 12. Date Spudded3/12/97 t13' Date T'D' Roached 114' Date C°mp" Susp" °r Aband115' Water depth' if °fish°re i 16' N°' °f C°mpleti°ns3/19/97 3/22/97 N/A MSLI One 17. Total Depth (MD+TVD)118. Plug Back Depth (MD+TVD)I19. Directional SUrveyl20. Depth where SSSV set~21. Thickness of Permafrost 6150 6150 F-'~l.plugged back to surface F~ []Yes I-]No } N/A MD! 1650' (Approx.) 22~ TyPe' Electric or Other Logs Run CDR, DSI/SP, Microlog, Litho Dens, MRIL, RFT 23. CASING, LINER AND CEMENTING RECORD .......... CASING SE'l-rING DEPTH HOLE _ SIZE WT. PER FT. GRADE TOP .. BOTTOM , SIZE C~MEN~'!NG RECORD _. _ AMOUNT PULLF~ 16" 62.5# H-40 Surf. 115' 24" 304 Sx AS I 9.625" 40.0# L-80 Surf. 2195' 12.25" 751 Sx Class G . · Plug #1 4750' 615'0' . Plug #2 2005' 2400' Plug #3 Surf. 327' ~)4. Perforations open to production (MD+TVD of Top and Bottom 25. TUBING R~CORD and interval, size and number) ...... S'iZE ' DEPTH SET (MD) PACKER SET (MD) N/A MD TVD MD TVD 26. AC~D, FRACTURE, CEMENT SQUEEZE, ETC. NONE DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED N/A ......... . ........ 27. PRODUCTI;3N TEST .... bate First P~'oduction iMethod of operation (FloWing, gas lift, etc.)' j N/A Date of Test'Hours Tested PROOUC'nON FOR OIL-BBL GAS-MCF WATER-BBL CHOKE SIZE J GAS-OIL RATIO TEST PERIOD ° Fi0W Tubing Casing Pressure CALCULATED · OIL-BBL GAS-MCF WATER-BBL OIL GRAwTY-API (CORR) Press. 24-HOUR RATE . 28. CORE'DATA .~. '¥~ \ ~ Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water.'~L~Ore chiR,~ REFER TO A'I-I"ACH MENT A BU?L/CATE Form 10-407 Rev. 07-01-80 Submit In Duplicate 29. Geologic Mark ';--~ 30. ~ ' Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids recovered Marker Name Depth Depth and gravity, GOR, and time of each phase. REFER TO ATTACHMENT B 131. List of Attachments Attachment A, Attachment B 32.1 hereby certify that the for~egoin~cl is-~),(m ~nd c0rrec~ t° the best of my~/nowledge Signed .~'~:;kl/f/ /// ... Title /~~ ~.~::~ Date ~ ('~ ~"~ 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. laM 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 Well Name: Attachment B ARCO Tarn #4 Geological Tops Corrected to Sonic Wireline: C-80/K-10 (MBK50) C-40/K-5 (MBK40) Top Tarn Interval Top Tarn Sand Base Sand C-35 (LBKS0) Total Depth (Drillers) 2528' 4212' 5366' 5412' 5510' 5798' 61 50' MD 2426' 4O56' 521 0' 5257' 5354' 5642' 5994' SS ARCO Alaska, Inc. Post Office Box 1003, .~ Anchorage, Alaska 99510-0360 Telephone 907 276 1215 August 25, 1997 Mr. David J. Johnston Commissioner State of Alaska Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Subject: Revised Well Completion Reports for: Tarn #2 (Permit No. 97-11,397-072) Tarn #3 (Permit No. 97-24) Tarn #3A (Permit No. 97-36, 397-038) Tam #4 (Permit No. 97-25, 397-059) Dear Mr. Commissioner: ARCO Alaska, Inc., as operator of the exploration wells Tarn #2, 3, 3A and 4, submits the enclosed revised "Well Completion Reports" (form 407). This revision includes more specific information about the logging program, the core description and geologic picks. Two attachments are also included. Please attach these new documents to the package previously sent to AOGCC. The Commission is requested to keep confidential the enclosed information due to the exploratory nature of these wells. If you have any questions regarding this matter, contact me at 265-6206 or James Trantham at 265-6434. Sincerely, M. Drilling Superintendent Kuparuk Development MZ/skad ARCO AIaska, · ,, ~ore Chip Description Qperator and Well Name: Section of ARCO Alaska, Inc. TARN #4 2 I Location: Date August 19, 1997 Core #: 1 5459' to 5546' Recovered: 87.0' Depth Rec. Description Oil Oil Fluor Cut Cut Show ft. in. Stain ~ % IntensityColor color fluor color sum 5462 Sandstone, It. grey, v.f grn qtz, good 90% brt yellow instant good feldspar and biotite, well sorted, sub strming ang., si. friable, sli calc. yellow/bi u mlky 5465 Sandstone, It. grey, v.f grn., qtz, sli 5 dull yellow sli yellow trace feldspar and biotite, v silty, poorly sorted, sub ang., si. friable, calc cemented, qtz. 5468 Sandstone, It. grey, v.f-f grn, qtz, good 70 brt yellow yellow/mi good feldspar and biotite, mod sorted, sub /gold ky ang, friable occ slty, sli calc. 5471 Sandstone, It. grey, v.f-f grn, qtz, good 90 brt yellow yell/mlky good feldspar and biotite, poorly sorted, / gold sub ang., friable, slty, sli calc. 5474 Sandstone, It. grey, v.f-f, occ med grn, good 100 brt yellow yell/mlky good qtz, feldspar and biotite, mod sorted, /gold sub ang., friable, slty, sli calc. 5477 Sandstone, It. grey, v.f-f, qtz, good 80 brt yellow yell/mlky good feldspar, mica and biotite, mod /gold sorted, sub ang., friable, slty, sli calc. 5480 Shale, dk grey, hard, slty, micaceous, sli calc. 5482 Shale, dk grey, hard, sli slty, micaceous, sli calc. 5487 Sandstone, grey, hard, vf grn, v. slty, sli 20 dull yellow sli yellow poor sli. micaceous, sli calc. 5490 Shale, dk grey, hard, sli slty, micaceous, sli calc. Remarks All zones with porosity have oil shows. Described by J. Sallee AR3B-2389-B ARCO Alaska, · ,, ~,bre Chip Description Operator and Well Name: Section of ARCO Alaska, Inc. TARN #4 2 I Location: Date August 19, 1997 Core #: 1 5459' to 5546' I Recovered: 87.0' I Depth Rec. Description Oil Oil Fluor Cut Cut Show ft, in. Stain Odsr % Intensity Color color fluor color sum 5493 Sandstone, It. grey, v.f-f grn qtz, sli 5 dull yellow sli yellow trace feldspar and biotite, poorly sorted, sub ang- suub rnd., si. friable, calc cement. 5496 Sandstone, It. grey, v.f-f grn., qtz, good 70 brt yellow yell/mlky good feldspar and biotite, slty, poorly sorted, /gold sub ang., si. friable, calc cemented 5499 Sandstone, It. grey, v.f-f grn-occ med, good 80 brt yellow yell/mlky good qtz, feldspar and biotite, mod sorted, /gold sub ang, friable occ slty, sli calc. 5502 Sandstone, It. grey, v.f -f grn,slty, qtz, good 60 brt yellow slow fair feldspar and biotite, poorly sorted, / gold yell/mlky sub ang., friable, slty, sli calc. 5505 Sandstone, It. grey, v.f-f, qtz, feldspar good 80 brt yellow yell/mlky good and biotite, poorly sorted, sub ang., /gold friable, slty, sli calc. 5508 Sandstone, It. grey, v.f-f, qtz, light good 80 brt yellow yell/mlky good feldspar, mica and biotite, mod /gold sorted, sub ang, friable, slty, sli calc. 5511 Sandstone, It. grey, v.f-f grn, qtz, mod light good 90 brt yellow yell/mlky good slty, feldspar, mica and biotite, mod /gold sorted, sub ang, friable, sli calc. 5459 Sandstone, It. grey, f -mgrn, qtz, light good 90 brt yellow yell/mlky good feldspar, mica and biotite, mod /gold sorted, sub ang-subrnd, friable, sli calc. Remarks All zones with porosity have oil shows. Described by J. Sallee AR3B-2389-B Attachment A ---! ARCO A~aska; thc. ~> Core Chip Description Operator and Well Name: Section of ARCO Alaska, Inc. TARN #4 1 I Location: Date August 20, 1997 Core #: 1 5459'to 5546' Recovered: 87.0' Depth Rec. Description Oil Oil Fluor Cut Cut Show ft, in. Stain OJ~ % intensit Color color fluor color sum y 5516 Shale:,dk grey,hd, silty and micaceous slight 10% weak yellow instant with very tthin ss laminae, grey ,hd, gold mod v.fn grn- f grn and slty, micaceous, strming poor vis porosity, fair show in SS yellow/gr laminae, een mlky cut 5521 Shale, dk grey, hard, slty. 5524 Shale, dk grey, hard, mod slty. 5525 Shale, dk grey, hard, slty. 5530 Shale, dkgrey, hard, slty, micaceous, none none non none none e 5533 Shale, dkgrey, hard, slty, micaceous, none none non none none sli calc. e 5536 Shale, dk grey, hard, slty, micaceous, sli calc. 5540 Shale:,dkgrey,hd, silty and mJcaceous none none non none none with very tthin ss laminae, grey ,hd, e v.fn grn and slty, micaceous. 5543 Shale, dkgrey, hard, sli. slty, sli. none none non none none micaceous, sli calc. e 5546 Siltsone, grey, hard, arg, v. none none non none none micaceous, sli cal¢. e Remarks All zones with porosity have oil shows. Described by J. Sallee 3B-2389-hS Tarn #4 Unit Depth Grain Size Color SortingWell Roundness Lithology 1 5547.6 to 5516.7 Mud/Silt to Very fine-grain sand Light gray to dark gray Subrounded Litharenite RECEIVED AUG 2 1 1997 Oil & Gas Cons. Oommissioa Anchorage Sedimentary Structures: This unit consists of interbedded, very thin bedded, sandstones and mudstones. Sandstones are range from .01' to .2' thick, but average .03-.04'. Sandstone beds thicker than .02 are typically ripple laminated, some starved ripples, very rare Tcd beds.. Ripples show some variation in apparent paleocurrents directions. Some ripples show reworked tops. Sandstones thinner than .02 are parallel laminated nd grade up into a graded (common) or stratified (rare) mudstone. Depositional units in the mudstone are .001 to.01' thick, typically .001 to.003' thick, They commonly are graded with either very fine sand or silt at the base and grading up into mud. Carbonacoeus material is common in sandstones. Unit Depth Grain Size Color SortingWell Roundness Lithology 2 5516.7 to 5513.3 Very fine-grain sand. Rare mudstone and lower fine grain sand Light gray to dark gray Subrounded Litharenite Sedimentary Structures: This unit consists of thin to medium bedded sandstone. Some sandstone beds near the base of this unit contain very thin mudstone caps while upper beds fine upward into current and/or planar laminations. Rare mudstone clasts in beds. Unit Depth 5513.3 Grain Size Color SortingWell Roundness Lithology 3 to 5498.2 Very fine to lower fine-grain sand. Rare mudstone/siltstone Light gray to dark gray Subrounded Litharenite M Ci OF LM ED ORIGINAL Date Sedimentary Structures: This unit consists of thin to thick bedded sandstone, that appear locally amalgamated. Some sandstone beds contain very thin ripple lamiated to massive, very fine grained sandstone to siltstone (with common organic material). Other beds appear to have a higher percentage of mudstone (few percent) at the top of beds. Rare mudstone clasts in beds. Unit 4 Depth 5498.2 to 5497.9 Grain Size Mud/Silt Color Medium gray to dark gray Sorting Roundness Lithology Sedimentary Structures: This unit consists of very thin bedded, mudstones. Mudstone beds are stratified (Bouma Td) or a poorly sorted disorganized mix of mud, silt, sand (rare) and carbonaceous material. Td unit caps unit Unit Depth 5497.9 Grain Size Color SortingWell Roundness Lithology 5 to 5497.75 Very fine-grain sand to silt. Light gray to dark gray Subrounded Litharenite Sedimentary Structures: This unit consists of very thin beds (.05') of lower very fine to siltstone couplets (+/- .001 mudstone drape). The beds appear massive and non-erosive bases. Unit 6 Depth 5497.75 to 5492.6 Grain Size Color SortingWell Roundness Lithology Very fine- to lower fine grain sand. Rare mudstone Light gray to dark gray Subrounded Litharenite Sedimentary Structures: This unit consists of thin to thick bedded sandstone. Some sandstone beds contain very thin mudstone caps. Beds are dominately massive, although tops of some beds are normal graded. Rare mudstone clasts in beds. Unit 7 Depth 5492.6 to 5492.25 Grain Size Mud/Silt Color Medium gray to dark gray Sorting Roundness Lithology Sedimentary Structures: This unit consists of very thin bedded, mudstones. Mudstone beds are faintly stratified and internally contain a poorly sorted disorganized mix of mud, silt, sand (rare) and carbonaceous material. Unit 8 Depth 5492.25 to 5488.7 Grain Size Color SortingWell Roundness Lithology Mud/Silt to Very fine-grain sand Light gray to dark gray Subrounded Litharenite Sedimentary Structures: This unit consists of interbedded, very thin to thin bedded, sandstones and very thin mudstones. Sandstones are range from .01' to .3' thick, but average .03-.04'. Sandstone beds thicker than .01 are typically planar to ripple laminated, some starved ripples, rare Tcd, Ta units. Ripples show some variation in apparent paleocurrents directions. Some beds show reworked tops. Sandstones thinner than .02 are parallel laminated and grade up into a graded (common) or stratified (rare) mudstone. Depositional units in the mudstone are .001 to.01' thick, typically .001 to.003' thick, They commonly are graded with either very fine sand or silt at the base and grading up into mud. Carbonacoeus material is common in sandstones, especially Bouma Tb unit. Unit Depth 5488.7 Grain Size Color SortingWell Roundness Lithology 9 to 5483 Very fine- to lower fine grain sand. Occasional mudstone Light gray to dark gray Subrounded Litharenite Sedimentary Structures: This unit consists of very thin to thick bedded sandstone. Many sandstone beds contain very thin mudstone caps. Beds are dominately massive, although tops of many beds are normal graded, planar or ripple laminated. Rare mudstone clasts in beds. Unit 10 Depth 5483 to 5481.85 Grain Size Color SortingWell Roundness Lithology Mud/Silt to Very fine-grain sand Light gray to dark gray Subrounded Litharenite Sedimentary Structures: This unit consists of interbedded, very thin bedded, sandstones and mudstones. Sandstones are range from .01' to .05' thick, but average .03-.04'. Sandstone beds are typically planar to/or ripple laminated. Some beds show reworked tops. Sandstones thinner than .02 are parallel laminated and grade up into a graded (common) or stratified (rare) mudstone. Depositional units in the mudstone are .001 to.01' thick, typically .001 to.003' thick, They commonly are graded with either very fine sand or silt at the base and grading up into mud. Carbonacoeus material is common in sandstones. Unit 11 Depth 5481.85 to 5478 Grain Size Color SortingWell Roundness Lithology Very fine- to lower fine grain sand. Mudstone as clasts Light gray to dark gray Subrounded Litharenite Sedimentary Structures: This unit consists of thin to thick bedded sandstone and intraformational conglomerate. Many sandstone beds contain very thin mudstone caps. Sandstone and conglomerate beds are dominately massive. Conglomerate matrix is sandstone. Appear erosional based. Unit 12 Depth 5478 to 5459 Grain Size Color SortingWell Roundness Lithology Very fine- to lower fine grain sand. Light gray to medium gray Subrounded Litharenite Sedimentary Structures: This unit consists of thin to thick bedded sandstone. Some sandstone beds contain a very fine grained cap (.01' thick) cap. Beds are dominately massive, although tops of some beds are normal graded, planar or climbing ripple laminated. Occasional mudstone clasts in beds. Bases appear largely erosional ARCD Alaska, inc. Page._~----of_ Well Interval Location Conventional Core Description Core No. Formation _ Core Dia, _ Date ~//2 ~./~ ?- _ Described By ~ Grain Size Description, Deposltlonal Environment, and Comments " i; I B O P GVG C M F VF$ C ORIGINAL AK94 030901 A00 ,~- ARC,.. ,-alaska, Inc. Conventional Core Description Well / .~ ""' ~/ Core No. Formation Interval Core Dia. Date Location Described By Page B C P GVC C M F VFS C AK94 03O901 A00 ~ ~ '--' I-- F, ~-= ,~ ~! O ~o Description, Depositlonal ~,~ ~ ~ .c ~ ~E ~ ~'~,~J ~ ~1~ Envlronment, and Comments IIIII --- .... IIIII - ~ - .. i.,i, iii ~ ' : I1:11 _ ,ak, ~.~- ARC~ Jaska, inc, Conventional Core Description Well T~ ~-~,1 L~ Core No. Formation Interval Core Dia., Date Location Described By Page ~ of.~ B C P GVC C M F VFS C AK94 030g01 A00 ,ak, ,~, ARC~. _,laska, Inc. Conventional Core Description Well ! o,,~ ~? Core No. Formation Interval Core Dia. Date Location Described By Vu,"'/'//~,,~ ~o[r/~ Page B C P GVC C M F VF$ C AK94030901A00 i; i '~ u = -~' ~ '~ ~ = i ! Description. Deposltlonal :~ ~j~ ~ ~ · ~,.~.E ~ ~ I Environ ent. and Comments · ~ ~ ~ i~aOR ~ II I r ' ~50~/ ' ~ .... T I Il : I II --,o~ : JT I II ] - ' ~ ' ~ II- I I Illi I ~ /7 ' .' ' I III ':/ I III I III I Ifl~ ~ I I~1: 1 I I ~ ' I I ~ J~ ~' ' ~o I I, ~. ........ ,~,-. ARCO, .~ka, inc. Conventional Core Description Well ,'~¢,r,,~ 1-/ Core No, Formation Interval Core Dia. Date Location Described By L~ ,,-"£ Page ~ of. i [_~ ..~ ~, ,...= ~.= '= m Envlronment,'and Comments .c e_ ~= ~ .-~ ~ = E ~ ~1 ' i o Description Depositlonal i F.,, I I , .... iI- - '-' i I I _ II II - ~ II II '.. ...... I . ' , I II - - . -I II -. " I '1 II . · ' I II . ' I II ~ ' " I II ' .... P~~ .. ---. , " -- B C PGVCG MFVFS C AK94 030901 A00 ,~-. ARCO ,..aska, Inc. Conventional Core Description Well ~f~ ~ Core No. Formation Interval Core Dia.. Date Location Described By Page~ of B C P GVCC M FVFS C AK94 030901 A00 Gram S,z~ I_~1 = o o Description, Deposltlonal ~ s [ · Environment, and Comments °c~-~ ....... I I ~ ~ ~ ~c ~1 ,:~. . IIIII IIII ' Well Interval Location ARC,_ .iaska, Inc. Conventional Core Description ~'/ Core No. Formation · Core Dia. Date Described By J."/",'/],'~.-- Page ~ of~ Description, Deposltional Environment, and Comments B C P GVC C M F VFS C AK94 030901 A00 Well ,~,~,- ARL daska, inc. Page Conventional Core Description '~rr, ~/ Core No. Formation Interval Core Dia. Date i...ocaTIOrl ~u,~[;rlUUU Dy ,.,,,.~.,/., ............. u) ~-= = -~. ~ "E '~ ~ Description, Depositlon~l i ,.~ -~ c E ' '~ ~.~ '~ ===~o~,-~~°==~"= =~ ~;. , Environment, and Comments ~,,~,~ - , -~ ~r',,,~ '~ '1',,,,, :~1~ I' . ,. ~ ~,~,~,~,, - IIIII "~ ~~ ~,1~71/~ _ E:'.. ~ , ~lsl~l~l/~ i _... . : ~1~1~1~11: -. s , . ~- " r-'--T I - ' -~:'...-" :--'--T,I,i.i~/I "-: ~ %"1"1"1~/t :" '- : "~1"1'1~/i "-': ~ ~ ~1~1~1~/! . . .....___._....__ _ , I IIII ~/,~ ~../,-~/,.L ..... IIIII II .... ~ ~- . '. .. 'i S/ ..... ~1~ ' ~'-~ ' II I BC PGVCC MFVFS C AK94 030901 A00 ,~' Page ._~.~_o f ~, ARC ,aska, Inc. Conventional Core Description '~o,,.. ~-~ Core No. Formation Well Interval Core Dia. Date /~u~,- ~/~'~ //~, ,~, Location uescrloea uy ~ mc~ '~e [ ~ GralnSize : ; ; ~ ~ ~ ~ ~ ~ = ~ ~ Description, Deposltlonai . ~ = ~ ~E~ ~~ ~ =1 Environment, and Comments o~, : III ... .,,.,,,,,,,. ' ~O - . :~z.- .... IIIII ".... ~ ~/~1~1~1 H -', . - ,. .... ~ ;~~ - ' 6/ ''. ~.' .... '~- . ~ ~11 ~¢ ' .._'. '" : .... T,r ' ' ' -" : II . . .. I ll ll ' _ .' ..'- .... ' ' ,,,,,,,,,,,,,I,I Ill[Ill]'""',,,,,, B C P GVCC M FVFS C AK94 030901 A00 ~ ARCO Exploration Company '" ~ ARCO Oil and Gas Company,,~' ARCO Alaska, Inc. Record Of Shipment Of Confidential Information District: Alaska To: AOGCC ARCO Alaska, Inc. Attn.: Ms. Lori Talyor 3001 Porcupine Dr Anchorage Alaska 99501 P. O. Box 100360 Anchorage, Alaska 99510-0360 Attn.' Kelli Thibodeau (907)265-6240 (X) Enclosed ( )Under separate cover ( )Via Tarn 2 MRIL Logs Paper & Sepia - CDR Logs Blueline & Sepia '- PEX Logs Blueline & Sepia ' Core Description , Tarn 3 CMR Logs Paper & Sepia Core Description Tarn 3A RFT Digital Information for both Tarn 3A and Tarn 4 Tarn 4 RFT Blueline (Sepia Under separate cover) Digital Information With Tarn 3A Note - Please verify an.d ack-~owJedge receipt, by signing and returning a copy of this transmittal. Signed by ~, ,~ ' Date Receiveq'by Date "'"' ,,,,. .'.-.~ i / . ...... Remarks: Please Note that all included information is CONFIDENTIAL. ~:'" .,:".:: -" i Page I [~ ARCO Exploration Company -, E] ARCO Oil and Gas Company" .. ARCO Alaska, Inc.,,~' Record Of Shipment Of Confidential Information ' District: Alaska To: AOGCC Attn.' Ms. Lori Tal¥or 3001 Porcupine Dr Anchorage Alaska 99501 From' ARCO Alaska, Inc. P. O. Box 100360 Anchorage, Alaska 99510-0360 Attn · Kelli Thibodeau (907)265-6240 (X) Enclosed ( )Under separate cover ( )Via Tarn 4 RFT Sepia Note -Pleas. e verify and ac. k"~"owledge receipt, by signing and returning a copy of this transmittal. Signed by/~ /1 , .[\ { ] /,/ -/._...//'/,., Date Received~y ,¢) ~ /-': Date Remarks: Please Note that all include~ information is ~tv~/~~J~. - 4~,,~ Page 1 ARCO Alaska, Inc. Internal Corresponde Date: Subject: From/Location: To/Location: July 29, 1997 Tam Logging Ops. Summary Wayne Campaign ATO 1454 Renee Hannon ATO 1450 This memo will summarize the Tarn logging operations for 1996-97. The following logs were run in this year's wells. Well Logs Depth Comments Tarn 2 PEX/DSI/SP 2194-7574 SP run off the AlT, multiple computer crashes cause job to run very slowly. ~'l-Oi I MRIL 5387-5715 Ran combined with DSI @ 300 fph. 7150-7408 CDR 2170-7597 MWD & Core 17.5' shallow to wireline Tam 3 PEX/DSI/SP 2145-5726 SP run offAIT ~q. o-~ CMR 5175-5362 Combined with PEX MRIL 5146-5385 Combined with DSI CDR 2150-5710 MWD & Core 1.5' deep to wireline. Tarn 3A MRIL/DSI Stuck on bottom, fished out. No data. ~ 7'O ~ RFT 6310-6527 Run on drillpipe. (Successful tests only) CDR/CDN 2050-7122 Tam 4 PEX/DSI/SP 2095-6155 All tools combined in one run. MRIL 5354-5568 Run by itself. ~- OLd' RFT 5430-5470 (Successful tests only) CDR 2164-6104 MWD & Core 6.75' deep to wireline. RECEIVEL AUG 0 4 1997 Alaska 0il & Gas Cons. Commission Anchorage ARCO Alaska, Inc. is a Subsidiary of AtlanticRichfieldCompany I--J ARCO Exploration Company -,,, J--1 ARCO Oil and Gas Company,,,, I-X-] ARCO Alaska, Inc. Record Of Shipment ~ Confidential Information District: :Alaska To: AOGCC Attn.: Ms. Lori Talyor 3001 Porcupine Dr Anchorage Alaska 99501 From: ARCO Alaska, Inc. P. O. Box 100360 Anchorage, Alaska 99510-0360 Attn.' Kelli Thibodeau (907)265-6240 (X) Enclosed ( )Under separate cover ( )Via Reports Logging Program for Tarn 2,Tarn 3,Tarn 3A & Tarn4 Formation Tops Ct"9- Tarn 2 Tarn 3 Tarn SA Tarn 4 Digital NMR Digital Data 2 diskette's Tarn 2 Tarn 4 .alli:,, .... a4e Note - Please verify and acknowledge receipt, by signin9 and returning a copy of this transmittal. Signed by .... ....-: Date .... "-- ' . . ~ '-~ 08/01/97 Received by ,,,,,.~ ,~-'-"~~,_~ Remarks: Please Note that all included information is CON~/O~NT~AL. Date Page I ~-1 ARCO Exploration Company ~--~ ARCO Oil and Gas Company r-X-] ARCO Alaska, Inc. Record Of Shipment eT Confidential Information District: Alaska To: AOGCC Attn.' Ms. Lori Talyor 3001 Porcupine Dr Anchorage Alaska 99501 From' ARCO Alaska, Inc. P. O. Box 100360 Anchorage, Alaska 99510-0360 Attn.: Kelli Thibodeau (907)265-6240 (X) Enclosed Reports Digital ( )Under separate cover ( )Via ,I / // //" Logging Program for Tarn 2,Tarn 3,Tarn 3A & Tarn4 Formation Tops Tarn 2 Tarn 3 - Tarn 3A Tarn 4 NMR Digital Data 2 diskette's Tarn 2 '"' Tarn 4 G~s Cons. Commissior, Anchorage Note - Please verify and a~"niov~ledge receipt, by signing and returning a copy of this transmittal. Signedby /~~ (,~'~,b~/~..~L/~ Date Received by (~i~,~,~A.~ Date 08/01/97 Remarks: Please Note that all included information is CONFIDENTIAL. Page I Well Name: ARCO Tarn #4 Geological Tops Corrected to Sonic Wireline: C-80/K- 10 (MBKS0) C-40/K-5 (MBK40) Top Tarn Interval Top Tarn Sand Base Sand C-35 (LBKS0) Total Depth (Drillers), MD 2528' 4212' 5366' 5412' 5510' 5798' 6150' SS 2426' 4056' 5210' 5257' 5354' 5642' 5994' RECEIVEE) AUG 0 4 1997 Alaska Oi~ & Gas Cons. Commission Anchorage ORIGINAL TONY KNOWLE$, GOVERNOR ALASKA OIL AND GAS CONSERVATION COMMISSION 3001 PORCUPINE DRIVE.- "' ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 July 31, 1997 Land Department, ATO 1470 David Sutter, Manager ARCO Alaska, Inc. P O Box 100360 Anchorage, Alaska 99510-0360 Re: Location Clearance, ARCO's Tarn Wells Dear Mr. Sutter: On July 17 our Petroleum Inspector accompanied your representative, Larry Brown, on a visit to four (4) of your wells to conduct Location Clearance inspections; results are as listed below. Insp. Date PTD No. Well Name and No. Condition July 17, 1997 97-011 Tarn No. 2 Acceptable July 17, 1997 97-024 Tarn No. 3 Acceptable July 17, 1997 97-036 Tarn No. 3A Acceptable July 17, 1997 97-025 Tarn No. 4 Acceptable Final Location Clearance is hereby approved for the above listed wells. The Commission will require no additional work on them; however, ARCO is still liable if problems with the wells occur in the future. Chairman ~ cc: Blair Wondzell Ic-artnl ARCO Alaska, Inc, Date: Subject: From/Location: To/Location: Internal Correspond. f July 29, 1997 Tam Logging Cps. Summary Wayne Campaign ATO 1454 Renee Hannon ATO 1450 This memo will summarize the Tam logging operations for 1996-97. The following logs were run in this year's wells. Well Logs Depth Comments Tam 2 PEX/DSI/SP 2194-7574 SP run off the AlT, multiple computer crashes cause job to run very slowly. MRIL 5387-5715 Ran combined with DSI @ 300 fph. 7150-7408 CDR 2170-7597 MWD & Core 17.5' shallow to wireline Tarn 3 PEX/DSI/SP 2145-5726 SP run offAIT CMR 5175-5362 Combined with PEX MRIL 5146-5385 Combined with DSI CDR 2150-5710 MWD & Core 1.5' deep to wireline. Tarn 3A MRIL/DSI Stuck on bottom, fished out. No data. RFT 6310-6527 Run on drillpipe. (Successful tests only) CDR/CDN 2050-7122 Tam 4 PEX/DSI/SP 2095-6155 All tools combined in one run. MRIL 5354-5568 Run by itself. RFT 5430-5470 (Successful tests only) CDR 2164-6104 MWD & Core 6.75' deep to wireline. ---- ...~ ;.J Oil & Gas Cons ARCO Alaska, Inc. is a Subsidiary of AtlanticRichfieldCompany ~ ARCO Exploration Company j--J ARCO Oil and Gas Company I-~ ARCO Alaska, Inc. Record Of Shipment ~f Confidential Information District: Alaska To: AOGCC Attn.: Ms. Lori Talyor 3001 Porcupine Dr Anchorage Alaska 99501 From: ARCO Alaska, Inc. P. O. Box 100360 Anchorage, Alaska 99510-0360 Attn · Kelli Thibodeau (907)265-6240 (X) Enclosed ( )Under separate cover ( )Via Reports q-I- 0~ qq .o~q Core Lab Tarn 2 ~.,, Tarn 3 Tarn 4 q q ' C:~' Tarn 4 Logs Conventional ~ore Descriptions as Displayed by ARCO Alaska, Inc Tarn 3 Tarn 2- 1 Sepia and I Blueline Dipole Shear Sonic - Upper Dipole with SP Note - Please.verify and acknowledge receipt, by signing and returning a copy of this transmittal. Signed by ,/? ,-~ .x" "' /'- ~; ! , ,~ i.''~ ,.: ,; - .. -,.- Date // '"'" ';" '/ : 4 ,'/}' /. ~'" -:' ..o' ..~ 87./28/97' ~ ~ ...' c' ,-" ~: Received b~ Remarks: Please Note that all included information is CONFIDENTIAL. CORE LABORATORIES CORE ANALYSIS RESULTS ARCO ALASKA, INC. "TARN" 4 KUPARUK RIVER - SW FIELD UMIAT MERIDIAN, ALASKA CL FILE #57111-097113 Perfo~lned by: Core Laboratories 3430 Unicorn Road Bakersfield, CA 93308 (805) 392-8600 Final Report Presented July 24, 1997 ezoresse2 res-ese'~: ire ces! iuggment of Co~e Labmrator~e$. Cora LaDcra:or:es. ~owe'.'sr. ma<a_= *s .',5"?:, 3- ,ecresemtalo'~ exoress cr :m2:ec :' ~, ~,r~ 3-; e..~-e$ . :: ;; -- ' ~: ,'- = ~. ' "~ 7': .:. :'. ', :.'-.; - - : ('~' .' :,; .... :. ,-~. ' a~? c:. ~as. ¢$a o- $tmer re,metaL mroce't,y, we;i or samd ~ cc,"necI~Orl ~,,';t,.1 N',mfch S~.Cn rec3'~ s --:-=: :' -e -33 ..CC~ fo' amy re¢$oq wr~=:$oe,,e- T2 ~ 'esot: S"~ -.': :e '~ L".; .:, .' .'.-: < ' "s?' .'..v ¢ ,' :' e .'.' "- ' ~;':.,..:, ' 3 ~,.¢ :;,= .;~ .... = PETROLEUM SERVICES Ms Rene Hannon Arco Alaska, Inc. 700 G Street Room ATO-1450 Anchorage, AK 99501 July 24, 1997 Subject' Transmittal of Core Analysis Data "Tarn" 4 Well Kuparuk River Field Umiat Meridian, Alaska Sec. 1-T9N/R7E CL File #57111-97113 Dear Ms Harmon: Conventional aluminum inner barrel cores were submitted to our Bakersfield laboratory for testing and analysis. Accompanying this letter, please find the results of this study. We appreciate this opportunity to be of service to you and to ARCO Alaska, Incorporated. Should you have any questions, or if we may be of further assistance, please contact us. Very trul~ Jeff Labo~tor, yours, sot Rock Properti es JUL 2 9 199~ Anc~ora.ge JLS:nw 8 original reports, 8 diskettes: Addressee Core Laboratoriee, Inc. 3430 Unicorn Road, Bakersfield, California 93308, (805) 392-8600, Fax (805) 392-0824 TABLE OF CONTENTS SECTION DESCRIPTION OF SERVICES CORE ANALYSIS DATA - TABULATED RESULTS HYDRAULIC UNIT ANALYSIS CORE INVENTORY 4 INTRODUCTION Core Laboratories was selected by Arco Alaska Inc. to perform a core analysis study upon samples recovered from the "Tarn" 4 Well, Kuparuk River - SW Field, Umiat Meridian, Alaska, Conventional aluminum inner barrel cores were submitted, Presented herein are the results of analysis. This report is divided into four sections. The first section provides a description of services, The second section contains the tabulated results of standard PKS analysis. Hydraulic unit information in a tabular presentation is included in the third section, and the final section contains an inventory of the recovered core and preserves. Epilog® plots summarizing the spectral gamma, routine analysis, and hydraulic unit analysis have also been included. In conjunction with the report, the results of analyses are supplied on an IBM PC compatible floppy diskette in Excel format, Core Processing The cores were shipped from Alaska to Los Angeles California by ARCO Alaska and then transported to Core Laboratories' Bakersfield facility by Core Lab personnel. Upon receipt, the core material was immediately removed from the aluminum sleeve, marked for depth at one-foot intervals and placed into three- foot long core boxes. Spectral Gamma Surface Loq Each core was scanned for natural gamma radiation utilizing Corelab's gamma spectrometer. Prior to performing the gamma log on the recovered cores, a scan of a 200 API calibration standard was performed and plotted to confirm proper operation and calibration of the gamma spectrometer. The cores were passed through the spectrometer's detector at a rate of one half foot per minute. Total gamma radiation and uranium-free gamma radiation are reported in API units. Potassium, uranium, and thorium are the elements primarily responsible for a typical rock gamma spectrum. The concentrations of uranium and thorium are reported in parts per million and that of potassium is reported in percent, Core Samplinq and Slabbinq After the spectral gamma measurement, a sample segment approximately three tenths of a foot long was taken from each foot of core for horizontal and vertical plug sampling. The remaining core from each foot was slabbed parallel to the core axis utilizing a one/third - two/thirds cut. Liquid nitrogen was used as the blade coolant. For photography, viewing, description and additional sample selection by ARC0's representatives the one-third sections were placed into slab boxes with styrofoam inserts. Each of the approximately seven tenths of a foot segments of the two-third bulk core (left after the material for the plug samples had been removed) were preserved by wrapping with six layers of Saran wrap, three layers of aluminum foil, and then dipping in Core Seal, Sample Preparation Both horizontally and vertically oriented one-inch diameter plugs were drilled from each of the three-tenth foot core sections taken for sampling, Isopar mineral oil was used as the bit coolant and lubricant, Each plug was wrapped with Saran wrap and aluminum foil and sealed in a sample jar as drilling was completed and then carried upstairs for immediate loading into the Dean-Stark extractors, Analysis Techniques Fluid Extraction Samples taken with horizontal orientation were weighed and placed into tared extraction thimbles, Water and the oil were extracted from the samples by Dean Stark methods with toluene as the solvent, The samples were held in the Dean Stark extractors for a minimum of sixteen hours and were removed only after no further water was recovered in the receiving tubes, Complete hydrocarbon extraction was conducted using soxhlet extractors with methylene chloride as the solvent, Cleaned samples were removed from the soxhlets and dried in a convection oven at 180°F for six to eight hours and then placed into a vacuum oven at 180°F for a minimum of forty-eight hours and then monitored for weight stability. The dried samples were cooled to laboratory temperature in a desiccator prior to analysis, Samples designated for vertical permeability determinations were "batch" cleaned in large Dean Stark extractors with toluene to remove water and then transferred to soxhlet extractors for batch cleaning with methylene chloride. Drying was performed as for the horizontal plugs prior to permeability measurements, Grain Densit,w Determinations Grain volumes of the horizontal plugs were determined using a Boyle's Law extended range heliumporosimeter, Metal jacket and end-screen weight and volume corrections were applied to the jacketed samples, Grain density was calculated using Equation 1. Dina = Mg / Vg (1) Where' Dina = Grain Density = Grain Mass : Grain Volume Porosity Determination Indirect pore volume measurements were made upon the horizontal plug samples, A mercury displacement pump was used to determine the bulk volume of each plug and the pore volumes were then calculated using Equation 2, and porosity was calculated using Equation 3, Vp : Vb- Va : [Vp / (Vp + V9)] x 100 (2) (3) Where' Vb V9 Vp ¢ = Bulk Volume Grain Volume Pore Volume = Porosity, Percent Fluid Saturation Determination Oil and water saturations were calculated using Equations 4 and 5, So = [((Wi - W2 - H20)/Do)/Vp] x 100 : [H20/Vp] x 100 (4) (5) Where' So Sw W1 W2 H20 Do Vp = Oil Saturation, Percent Water Saturation, Percent = Natural Weight = Extracted and Dried Weight = Extracted Water, Density Assumed 1.0 gm/cc : Density of Oil, 38 API° = Pore Volume Permeability to Air Permeability determinations were made following the pore volume determinations. Samples were confined in Hassler-type holders with 400 psi confining pressure for permeability measurements. Permeability values were calculated utilizing Darcy's Equation for compressible fluids, Equation 6. Pa v~ (1000) Qa X L = Ka : X (6) (P1 - P2)(P1 + P~) Vb Where' Ka Vg P1 - P~ (P1 + P~) 2 Pa Qa L Vb Permeability to Air Gas Viscosity Differential Pressure Mean Pressure = Atmospheric Pressure = Flow Rate = Length = Bulk Volume Hydraulic Unit Analysis After rock property measurements had been completed, a hydraulic unit analysis was performed. Reservoir quality index (average pore throat size) and pore ratio values were calculated for each sample using Equations 7 and 8, RQI = 0.0314 X SQRT(K/PHI) PR : PHI/(1-PHI) (7) (8) Where' RQI = Reservoir Quality Index K = Permeability to Air PHI = Fractional Porosity PR = Pore Ratio RQI and PR values were cross-plotted on a log-log scale and the data grouped into hydraulic units. Each hydraulic unit represents a unique pore geometry relationship and provides the foundation for the integration of core and electric log data. The results are presented in two tabulated formats; first sorted by sample depth, and then sorted by hydraulic unit; to facilitate selection of representative samples for any additional testing. Core Photoqraph,y After scraping the one-third core sections to remove cuttings and saw marks, composite photographs were taken under simulated natural and ultra-violet lighting conditions. The results of photography were presented under separate cover. Sample Disposition Upon completion of the core photography, the one-third slabbed core was returned to ARCO Alaska Inc, in Anchorage , The bulk two-thirds core preserves were shipped to ARCO's research facility in Plano Texas, Arco Alaska Inc. "Tarn" 4 Kuparuk River - SW Field CL File No.: 5711.1-97113 Location :Sec. I-T9N/R7E API No. : 50-103-20249 SampleI Depth I Permeability (Kair) Por Oil Water ONV Total Grain Description No. I IH°riz' I Vert. Ratio Liquid Den ft md md % % PV %PV ~ %PV g/cc ~ Core # 1 Recovered 88.5' Method 5459.0' - 5547.5' 1 5459.0 6.32 5.49 21.9 6.7 55.5 0.12 62.3 2.70 2 5460.1 13.4 6.05 21.5 7.1 58.5 0.12 65.7 2.68 3 5461.2 1.77 1.02 1.9.0 4.1 71.4 0.06 75.5 2.68 4 5462.0 5.11 6.30 21.1 7.6 51.3 0.15 58.9 2.69 5 5463.0 3.05 1.47 19.7 8.2 58.5 0.14 66.6 2.68 6 5464.0 0.781 0.021 19.3 9.1 63.3 0.14 72.4 2.69 7 5465.1 0.022 0.008 9.8 0.0 72.8 0.00 72.8 2.67 8 5466.0 0.019 0.112 8.5 0.0 85.6 0.00 85.6 2.72 9 5467.0 0.313 0.433 15.8 5.3 70.0 0.08 75.3 2.68 10 5468.0 0.630 1.13 17.6 7.0 62.7 0.11 69.7 2.67 11 5469.0 0.010 0.008 7.8 0.0 75.6 0.00 75.6 2.73 12 5470.0 4.43 3.13 21.6 9.6 57.2 0.17 66.8 2.66 13 5471.0 0.935 0.560 20.1 10.9 64.5 0.17 75.5 2.65 14 5472.0 0.230 0.099 18.0 12.3 68.5 0.18 80.7 2.67 15 5473.0 1.72 1.16 19.6 23.1 53.2 0.43 76.3 2.62 16 5474.0 1.82 1.66 19.4 22.9 59.7 0.38 82.6 2.65 17 5475.0 17.8 15.1 22.9 10.9 46.9 0.23 57.8 2.65 18 5476.1 0.453 0.088 16.9 10.5 75.6 0.14 86.1 2.59 19 5477.0 7.50 6.33 21.6 14.5 56.9 0.25 71.4 2.64 20 5478.0 6.18 4.39 20.6 19.3 46.7 0.41 66.0 2.68 21 5479.2 6.22 14.9 22.0 22.4 51.6 0.44 74.0 2.67 22 5480.0 0.035 0.003 13.9 0.0 40.5 0.00 40.5 2.68 23 5481.0 1.46 0.010 17.1 10.8 79.4 0.14 90.2 2.69 24 5482.0 0.078 0.003 13.2 0.0 91.5 0.00 91.5 2.71 Sst It tan vf-fgr vslty calc It stn yel-wh flu Sst It tan vf-fgr vslty calc It sm yel-wh flu Sst It tan vf-fgr vslty calc lg sh incls It stn yel-wh flu Sst It tan vf-£gr slty calc It stn yel-wh flu Sst It tan vf-fgr slty calc It stn yel-wh flu Sst It tan vf-fgr slty calc It stn yel-wh flu Sst gry vf-fgr vslty calc no stn no flu Sst gry vf-fgr vslty calc no stn no flu Sst It tan vf-fgr vslty calc It stn yel-gld flu Sst It tan vf-fgr vslty calc It stn yel-gld flu Sst gry vf-fgr vslty calc no stn no flu Sst It tan vf-fgr slty calc It sm yel-wh flu Sst It tan vf-fgr slty calc It sm yel-wh flu Sst It tan vf-fgr vslty calc It stn yel-wh flu Sst It tan vf-fgr slty calc It stn yel-wh flu Sst It tan vf-fgr slty calc It stn yel-wh flu Sst It tan vf-mgr slty calc It stn yel-wh flu Sst It tan vf-fgr vslty sh lam carb strk It sm yel-wh flu Sst It tan vf-fgr slty calc It sm yel-wh flu Sst It tan vf-fgr slty calc It sm yel-wh flu Sst It tan vf-fgr slty sh lam It sm yel-wh flu Sh dk gry vslty carb incl no sm no flu Sst It tan-gu vf-fgr slty sh lam It strk stn yel-wh flu Sh dk gry vfgr sd strk slty no stn no flu Dean Stark iDean Stark Dean Stark Dean Stark Demi Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Sta," Dean Sta. Dean Stark Dean Stark Dean Stark Dean Stark . Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark 7~24~97 Core Analysis Results 1 Arco Alaska Inc. "Tarn" 4 Kuparuk River - SW Field CL File No.: 57111-97113 Location :Sec. I-T9N/R7E API No. : 50-103-20249 Sample Depth ,,Permeability (Kair) Por Oil Water O/W Total Grain Description Method No. Horiz. I Vert. Ratio Liquid Den ft mdI md % % PV %PV %PV g/cc 25 5483.2 0,377 0,688 17.7 12.1 76.6 0.16 88.7 2.65 Sst It tan-dk gry vf-fgr vslty sh lam carb strk lt-strk str Dean Stark 26 5484.0 0.081 0.019 14.4 0.0 92.6 0.00 92.6 2.61 Sst gry vfgr vslty carb no stn no flu Dean Stark 27 5485.0 0.566 0.285 19.6 21.9 53.2 0.41 75.1 2.78 Sst tan vf-mgr vslty sh lam It sm yel-wh flu Dean Stark 28 5486.0 0.005 0.003 6.7 0.0 74.9 0.00 74.9 2.74 Sst gry vfgr vslty calc no sm no flu Dean Stark 29 5487.0 0.642 0,473 19.4 18.0 58.6 0.31 76.6 2.65 Sst It tm~ vf-fgr vslty It stn yel-wh flu Dean Stark 30 5488.0 0.864 0.516 19.3 23.7 56.0 0.42 79.7 2.63 Sst It tan vf-fgr vslty It stn yel-wh flu Dean Stark 31 5489.0 0.338 0,005 13.1 0.0 96.1 0.00 96.1 2.68 Sh dk gry vfgr sd lean vslty no stn no flu Dean Stark 32 5490.0 0,677 0.018 13.3 0.0 99.6 0.00 99.6 2.71 Sh dk gry vfgr sd lam vslty no stn no flu Dean Stark 33 5491.0 0.879 0,003 13.2 0.0 95.8 0.00 95.8 2.72 Sh dk gry vslty no stn no flu Dean Stark 34 5492.0 0,352 0.004 12.9 0.0 97.1 0.00 97.1 2.70 Sh dk gry vfgr sd strks vslty no stn no flu Dean Stark 35 5493.0 0.208 0.246 17.8 6.3 75.8 0.08 82.1 2.63 Sst It tan vf-fgr slty It sm yel-wh flu Dean Stark 36 5494.0 0.943 0.611 20.2 25.0 50.4 0.50 75.4 2.64 Sst It tan vf-fgr slty It stn yel-wh flu Dean Stark 37 5495.0 1.26 0.409 20.2 22.3 57.3 0.39 79.6 2.64 Sst It tan vf-fgr slty It sm yel-wh flu Dean Stark 38 5496.0 3.22 0,457 21.1 27.9 50.5 0,55 78.4 2.65 Sst It tan vf-fgr slty It stn yel-wh flu Dean Stark 39 5497.0 0.466 0.238 19.3 17.4 62.0 0,28 79.4 2.68 Sst It tan vf-fgr slty It stn yel-wh flu Dean Star~' 40 5498.2 0.166 0.549 16.6 9.0 79.2 0.11 88.3 2.64 Sst gry-lt tan vfgr vslty sh lam carb incl It strk stn wh- Dean Sta, 41 5499.0 0,290 0.187 18.1 14.0 66.5 0,21 80.5 2.64 Sst It tan vf-fgr vslty It stn yel-wh flu Dean Stark 42 5500.0 0.529 0.279 17.9 18.1 60.4 0.30 78,4 2.64 Sst It tan vf-fgr vslty It stn yel-wh flu Dean Stark 43 5501.0 0.004 0.002 4.8 0.0 84.0 0.00 84,0 2.65 Sst gry vf-fgr vslty calc no sm no flu Dean Stark 44 5502.0 0.318 0.623 18.1 15.0 64.3 0.23 79,3 2.63 Sst It tan vfofgr vslty sh incl It stn yel-wh flu Dean Stark 45 5503.0 1.26 0.861 19.5 26.2 52.3 0.50 78.5 2.65 Sst It tan vf-fgr vslty It stn yel-wh flu Demi Stark 46 5504.0 4.59 2.73 21.5 32.8 43.2 0.76 76.0 2.63 Sst It tan vf-fgr vslty It stn yel-wh flu Dean Stark 47 5505.0 1.41 0.251 20.8 20.5 60.0 0.34 80.5 2.64 Sst It tan vf-fgr vslty It sm yel-wh flu Dean Stark 48 5506.0 2.52 1.82 20.7 29.6 47.3 0.63 76.9 2.65 Sst It tan vf-fgr vslty It stn yel-wh flu Dean Stark 49 5507.0 4.65 2.72 21.2 34.7 41.5 0.84 76.2 2.64 Sst It tan vf-fgr vslty It stn yel-wh flu Dean Stark 50 5508.0 6.58 0.003 21.9 30.2 46.5 0.65 76.6 2.63 Sst It tan vf-fgr vslty It stn yel-wh flu Dean Stark Core Analysis Results 2 7/24/97 Arco Alaska Inc. "Tarn" 4 Kuparuk River - SW Field CL File No.: 57111-97113 Location :Sec. I-T9N/R7E API No. : 50-103-20249 Sample Depth Permeability (Kair) Por Oil Water O/W Total Grain Description Method No. Horiz. I Vert. Ratio Liquid Den ft mdI md % % PV %PV %PV g/cc 51 52 53 54 5509.0 0.209 5.97 13.8 15.8 63.6 0.25 79.3 2.65 5510.0 0.003 0.002 4.7 0.0 65.4 0.00 65.4 2.69 5511.0 3.54 4.53 21.4 0.1 69.8 0.00 69.9 2.62 5512.0 12.0 7.84 22.4 27.8 47.9 0.58 75.7 2.62 55 5513.0 4.83 3.52 20.5 37.1 41.2 0.90 78.3 2.64 56 5514.0 1.09 0.363 19.7 23.4 57.1 0.41 80.5 2.60 57 5515.0 0.038 0.038 9.5 16.7 55.0 0.30 71.8 2.66 58 5516.2 1.04 0.362 18.0 17.9 63.4 0.28 81.4 2.62 5517 5518 5519 59 5520.2 0.290 0.001 9.9 0.0 90.0 0.00 90.0 2.66 60 5521.0 1.29 0.001 11.5 0.0 96.0 0.00 96.0 2.67 61 5522.0 0.096 0.002 11.5 0.0 93.3 0.00 93.3 2.69 62 5523.0 0.047 0.002 12.3 0.0 98.8 0.00 98.8 2.69 63 5524.0 0.197 0.001 12.2 0.0 98.3 0.00 98.3 2.70 64 5525.1 0.037 0.002 12.5 0.0 98.7 0.00 98.7 2.70 65 5526.0 0.033 0.001 12.9 0.0 99.2 0.00 99.2 2.71 66 5527.0 0.081 0.001 12.1 0.0 98.6 0.00 98.6 2.68 67 5528.1 0.621 0.002 11.4 0.0 98.0 0.00 98.0 2.66 68 5529.1 0.048 0.002 10.6 0.0 98.0 0.00 98.0 2.67 69 5530.2 0.048 0.001 11.6 0.0 99.7 0.00 99.7 2.70 70 5531.0 0.098 0.001 12.3 0.0 98.4 0.00 98.4 2.70 71 5532.1 0.556 0.002 12.7 0.0 99.4 0.00 99.4 2.70 72 5533.2 0.212 0.001 12.4 0.0 99.5 0.00 99.5 2.69 73 5534.5 0.044 0.005 12.4 0.0 98.0 0.00 98.0 2.67 Sst It tan vf-fgr vslty calc It stn yel-wh flu Dean Stm ; ,' Sst gry vf-fgr vslty calc sh incl no stn no flu Dean Stark Sst It tan vf-fgr vslty It stn wh-yel flu Dean Stark Sst It tan vf-fgr vslty It stn wh-yel flu Dean Stark Sst It tan vf-fgr vslty It stn wh-yel flu Dean Stark Sst It tan vf-fgr vslty It stn wh-yel flu Dean Stark Sst It tan vf-fgr vslty calc It stn wh-yel flu Dean Stark Sst It tan vf-fgr vslty calc It stn wh-yel flu Dean Stark No samples possible No samples possible No samples possible Sst gry vfgr vslty sh lam no sm no flu Sh gry vfgr sd strks vslty no stn no flu Sh gry vfgr sd latn vslty no sm no flu Sh gry vfgr sd lam vslty no sm no flu Sh gry vfgr sd strk vslty no sm no flu Sh gry vfgr sd strk vslty no sm no flu Sh gry vslty no stn no flu Sh gry vfgr sd lam vslty no sm no flu Sd gry vfgr sd lam vslty no sm no flu Sd gry vfgr sd lam vslty no stn no flu Sh gry vfgr sd strk vslty no sm no flu Sh gry vslty no sm no flu Sh gry vslty no stn no flu Sh gry vfgr sdlarn vslty no stn no flu Sh gry vfgr sd lam vslty no sm no flu Dean Stark Dean Stark Dean Stark Dean Stark Dean Sta Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Dean Stark Core Analysis Results 3 7/24/97 Arco Alaska Inc. "Tarn" 4 Kuparuk River - SW Field CL File No.: 57111-97113 Location :Sec. I-T9N/R7E API No. : 50-103-20249 Sample Depth Permeability (Kair) Por Oil Water O/W Total Grain Description Method No. Horiz. I Vert. Ratio Liquid Den ft mdI md % % PV %PV %PV g/cc i iiiii i1~ i iH i i i i iiiiiiiii1,11,,,,,,,,, 5535 No samples possible 74 5536.0 0.034 0.001 12.7 0.0 99.5 0.00 99.5 2.70 Sh gry vfgr sd strks vslty no stn no flu Dean Stark 75 5537.1 0.117 0.001 11.1 0.0 99.0 0.00 99.0 2.65 Sst gry vfgr vslty sh lams no stn no flu Dean Stark 76 5538.0 0.036 0.001 10.3 0.0 95.0 0.00 95.0 2.62 Sst gry vfgr vslty sh lams no stn no flu Dean Stark 77 5539.2 0.087 0.001 11.7 0.0 96.3 0.00 96.3 2.67 Sst gry vfgr vslty sh lams no stn no flu Dean Stark 78 5540.1 0.052 0.002 12.1 0.0 99.0 0.00 99.0 2.69 Sh gry vfgr sd strks vslty no stn no flu Dean Stark 79 5541.2 0.075 0.002 11.6 0.0 99.2 0.00 99.2 2.69 Sh gry vfgr sd lams vslty no stn no flu Dean Stark 80 5542.2 0.037 0.001 11.5 0.0 94.4 0.00 94.4 2.68 Sh gry vfgr sd lams vslty no stn no flu Dean Stark 81 5543.0 0.018 0.002 12.1 0.0 98.4 0.00 98.4 2.70 Sltst gry vfgr sd strk sh no stn no flu Dean Stark 82 5544.1 0.084 0.001 11.3 0.0 89.3 0.00 89.3 2.65 Sst gry vfgr vslty sh lam no stn no flu Dean Stark 83 5545.0 0.049 0.002 11.9 0.0 99.6 0.00 99.6 2.69 Sh gry vfgr sd vslty no stn no flu Dean Stark 84 5546.6 0.111 0.002 11.9 0.0 99.7 0.00 99.7 2.69 Sh gry vfgr sd strk vslty no stn no flu Dean Stark 85 5547.1 0.064 0.002 12.0 0.0 91.9 0.00 91.9 2.68 Sh gry vfgr sd strk vslty no stn no flu Dean Stark Core Analysis Results 4 7/24/97 ARCO Alaska, Inc. "Tarn" 4 Hydraulic Unit I.D. Sorted By Depth Sample Depth Flow Reservoir Number Zone Quality (feet) Indicator Index 1 5459.0 0.6039 0.169 2 5460.1 0.9045 O. 248 3 5461.2 0.4083 0.096 4 5462.0 0.5782 0.155 5 5463.0 0.5018 0.123 6 5464.0 0.2630 0.063 7 5465.1 0.1365 0.015 8 5466.0 0.1610 0.015 9 5467.0 0.2348 0.044 10 5468.0 0.2795 0.060 11 5469.0 0.1322 0.011 12 5470.0 0.5142 0.142 13 5471.0 0.2701 0.068 14 5472.0 0.1613 0.035 15 5473.0 0.3813 0.093 16 5474.0 0.3991 0.096 17 5475.0 0.9314 0.277 18 5476.1 0.2531 0.051 19 5477.0 0.6738 0.185 20 5478.0 0.6636 0.172 21 5479.2 0.5904 0.1 67 22 5480.0 0.0980 0.016 23 5481.0 0.4471 0.092 Hydraulic Unit 10 10 9 10 9 8 7 7 8 8 7 9 8 7 9 9 10 8 10 10 10 6 9 C.L. File: 57111-97113 Page I Sorted by Depth ARCO Alaska, Inc. "Tarn" 4 Hydraulic Unit I.D. Sorted By Depth Sample Depth Flow Reservoir Number Zone Quality (feet) Indicator Index 24 5482.0 O. 1587 0.024 25 5483.2 0.2123 0.046 26 5484.0 O. 1398 0.024 27 5485.0 0.2187 0.053 28 5486,0 O. 1141 0.008 29 5487.0 0.2378 0.057 30 5488.0 0.2789 0.067 31 5489.0 0.3365 0.051 32 5490.0 0.4595 0.071 33 5491,0 0.5336 0.081 34 5492.0 0.3524 0.052 35 5493.0 O. 1565 0.034 36 5494.0 0.2673 0.068 37 5495.0 0.3098 0.078 38 5496.0 0.4598 O. 123 39 5497.0 0.2032 0.049 40 5498.2 O. 1583 0.031 41 5499.0 0.1803 0.040 42 5500.0 0.2472 0.054 43 5501.0 0.1797 0.009 44 5502.0 O. 1883 0.042 45 5503.0 0.3310 0.080 46 5504.0 0.5306 0.145 Hydraulic Unit 7 8 7 8 6 8 8 8 9 9 9 7 8 8 9 7 7 7 8 7 7 8 9 C.L. File: 57111-97113 Page 2 Sorted by Depth ARCO Alaska, Inc. "Tarn" 4 Hydraulic Unit I.D. Sorted By Depth Sample Depth Flow Reservoir Number Zone Quality (feet) Indicator Index 47 5505.0 0.3120 0.082 48 5506.0 0.4208 O. 110 49 5507.0 0.5467 0.147 50 5508.0 0.6120 0.172 51 5509.0 0.2412 0.039 52 5510.0 O. 1579 0.008 53 5511.0 0.4686 0.128 54 5512.0 0.7955 0.230 55 5513.0 0.5907 0.152 56 5514.0 0.3011 0.074 57 5515.0 0.1915 0.020 58 5516.2 0.3444 0.075 59 5520.2 0.4885 0.054 60 5521.0 0.8105 0.105 61 5522.0 0.2218 0.029 62 5523.0 0.1386 0.019 63 5524.0 0.2885 0.040 64 5525.1 0.1188 0.017 65 5526.0 0.1062 0.016 66 5527.0 0.1861 0.026 67 5528.1 0.5660 0.073 68 5529.1 0.1771 0.021 69 5530.2 0.1539 0.020 Hydraulic Unit 8 9 9 10 8 7 9 10 10 8 7 8 9 10 8 7 8 6 6 7 9 7 7 C.L. File: 57111-97113 Page 3 Sorted by Depth ARCO Alaska, Inc. "Tarn" 4 Hydraulic Unit I.D. Sorted By Depth Sample Depth Flow Reservoir Number Zone Quality (feet) Indicator Index 70 5531.0 0.1981 0.028 71 5532.1 0.4519 0.066 72 5533.2 0.2884 0.041 73 5534.5 0.1326 0.019 74 5536.0 0.1111 0.016 75 5537,1 0.2570 0.032 76 5538.0 0.1607 0.018 77 5539.2 0.2034 0,027 78 5540.1 0.1482 0.020 79 5541.2 0.1907 0.025 80 5542.2 0.1381 0,018 81 5543.0 0.0881 0.012 82 5544.1 0.2128 0,027 83 5545.0 0.1489 0.020 84 5546.6 0.2234 0.030 85 5547.1 0.1675 0.023 Hydraulic Unit 7 9 8 7 6 8 7 7 7 7 7 6 8 7 8 7 C.L. File: 57111-97113 Page 4 Sorted by Depth Sample Number 22 28 64 65 74 81 7 14 24 26 35 39 40 41 43 44 52 57 62 ARCO Alaska, Inc. "Tarn" 4 Hydraulic Unit I.D. Sorted By Hydraulic Unit Depth (~et) 5480.0 5486.0 5525.1 5526.0 5536.0 5543.0 5465.1 5466.0 5469.0 5472.0 5482.0 5484.0 5493.0 5497.0 5498.2 5499.0 5501.0 5502.0 5510.0 5515.0 5523.0 5527.0 5529.1 Flow Zone Indicator 0.0980 0.1141, 0.1188 0.1062 0.1111 0.0881 0.1365 0.1610 0.1322 0.1613 0.1587 0.1398 0.1565 0.2032 0.1583 0.1803 0.1797 0.1883 0.1579 0.1915 0.1386 0.1861 0.1771 Reservoir Quality Index 0.016 0.008 0.017 0.016 0.016 0.012 0.015 0.015 0.011 0.035 0.024 0.024 0.034 0.049 0.031 0.040 0.009 0.042 0.008 0.020 0.019 0.026 0.021 Hydraulic Unit 6 6 6 6 6 6 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 C.L. File: 57111-97113 Page 1 Sorted by Hydraulic Unit Sample Number 69 70 73 76 77 78 79 80 83 85 6 9 10 13 18 25 27 29 3O 31 36 37 42 ARCO Alaska, Inc. "Tarn" 4 Hydraulic Unit I.D. Sorted By Hydraulic Unit Depth (~et) 5530.2 5531.0 5534.5 5538.0 5539.2 5540.1 5541.2 5542.2 5545.0 5547.1 5464.0 5467.O 5468.0 5471.0 5476.1 5483.2 5485.0 5487.0 5488.0 5489.0 5494.0 5495.0 5500.0 Flow Zone Indicator 0.1539 0.1981 0.1326 O. 1607 0.2034 0.1482 O. 1907 0.1381 O. 1489 0.1675 0.2630 0.2348 0.2795 0.2701 0.2531 0.2123 0.2187 0.2378 0.2789 0.3365 0.2673 0.3098 0.2472 Reservoir Quality Index 0.020 0.028 0.019 0.018 0.027 0.020 0.025 0.018 0.020 0.023 0.063 0.044 0.060 0.068 0.051 0.046 0.053 0.057 0.067 0.051 0.068 0.078 0.054 Hydraulic Unit 7 7 7 7 7 7 7 7 7 7 8 8 8 8 8 8 8 8 8 8 8 8 8 C.L. File: 57111-97113 Page 2 Sorted by Hydraulic Unit Sample Number 45 47 56 63 72 75 82 84 3 16 23 32 33 34 38 46 48 ARCO Alaska, Inc. "Tarn" 4 Hydraulic Unit I.D. Sorted By Hydraulic Unit Depth (~et) 5503.0 5505.0 5509.0 5514.0 5516.2 5522.0 5524.0 5533.2 5537.1 5544.1 5546,6 5461.2 5463.0 5470.0 5473.0 5474.0 5481.0 5490.0 5491.0 5492.0 5496.0 5504.0 5506.0 Flow Zone Indicator 0.3310 0.3120 0.2412 0.3011 0.3444 0.2218 0.2885 0.2884 0.2570 0.2128 0.2234 0.4083 0.5018 0.5142 0.3813 0.3991 0.4471 0.4595 0.5336 0.3524 0.4598 0.5306 0.4208 Reservoir Quality Index 0.080 0.082 0.039 0.074 0.075 0.029 0.040 0.041 0.032 0.027 0.030 0.096 0.123 0.142 0.093 0.096 0.092 0.071 0.081 0.052 0.123 0.145 0.110 Hydraulic Unit 8 8 8 8 8 8 8 8 8 8 8 9 9 9 9 9 9 9 9 9 9 9 9 C.L. File: 57111-97113 Page 3 Sorted by Hydraulic Unit Sample Number 49 53 59 67 71 1 2 4 17 19 20 21 50 54 55 60 ARCO Alaska, Inc. "Tarn" 4 Hydraulic Unit I.D. Sorted By Hydraulic Unit Depth (~et) 5507.0 5511.0 5520.2 5528.1 5532.1 5459.0 5460.1 5462.0 5475.0 5477.0 5478.0 5479.2 5508.0 5512.0 5513.0 5521.0 Flow Zone Indicator 0.5467 0.4686 0.4885 0.5660 0.4519 0.6039 0.9045 0.5782 0.9314 0.6738 0.6636 0.5904 0.6120 0.7955 0.5907 0.8105 Reservoir Quality Index 0.147 0.128 0.054 0,073 0.066 0.169 0.248 0.155 0.277 0.185 0.172 0.167 0.172 0.230 0.152 0.105 Hydraulic Unit 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 C.L. File: 57111-97113 Page 4 Sorted by Hydraulic Unit ARCO Alaska, Inc. "Tarn" 4 Kuparuk River -SW Field Coring Re-Cap Core #] Top Depth Bottom(Cut) Depth Bott°m DepthI CutI (Recovered) Rec. % Rec. Total Cut Total Rec. Cum. % Rec. 1 5459 5549.0 5547.6 90 88.6 98.4 90 88.6 98.4 ARCO Alaska, Inc. "Tarn" 4 Kuparuk River -SW Field Bulk Core Inventory Core # 1 5459.0 - 5547.6 1 5459.0 - 5462.0 2 5462.0 - 5465.0 3 5465.0 - 5468.0 4 5468.0 - 5471.0 5 5471.0 - 5474.0 6 5474.0 - 5477.0 7 5477.0 - 5480.0 8 5480.0 - 5483.0 9 5483.0 - 5486.0 10 5486.0 - 5489.0 11 5489.0 - 5492.0 12 5492.0 - 5495.0 13 5495.0 - 5498.0 14 5498.0 - 5501.0 15 5501.0 - 5504.0 16 5504.0 - 5507.0 17 5507.0 - 5510.0 18 5510.0 - 5513.0 19 5513.0 - 5516.0 20 5516.0 - 5519.0 21 5519.0 - 5522.0 22 5522.0 - 5525.0 23 5525.0 - 5528.0 24 5528.0 - 5531.0 25 5531.0 - 5534.0 26 5534.0 - 5537.0 27 5537.0 - 5540.0 28 5540.0 - 5543.0 29 5543.0 - 5546.0 30 5546.0 - 5547.6 Page 1 7/24/97 ARCO Alaska, Inc. "Tarn" 4 Kuparuk River - SW Field Preserve Inventory 1 5459.3 - 5460.1 2 5460.4 - 5461.2 3 5461.5 - 5462.0 4 5462.3 - 5463.0 5 5463.3 - 5464.0 6 5464.3 - 5465.1 7 5465.4 - 5466.0 8 5466.3 - 5467.0 9 5467.3 - 5468.0 10 5468.3 - 5469.0 11 5469.3 - 5470.0 12 5470.3 - 5471.0 13 5471.3 - 5472.0 14 5472.3 - 5473.0 15 5473.3 - 5474.0 16 5474.3 - 5475.0 17 5475.3 - 5476.1 18 5476.4 - 5477.0 19 5477.3 - 5478.0 20 5478.3 - 5479.2 21 5479.5 - 5480.0 22 5480.3 - 5481.0 23 5481.3 - 5482.0 24 5482.3 - 5483.0 25 5483.0 - 5483.2 26 5483.5 - 5484.0 27 5484.3 - 5485.0 28 5485.3 - 5486.0 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 5486.3 - 5487.0 57 5514.3 - 5487.3 - 5488.0 58 5515.3 - 5488.3 - 5489.0 59 5516.5 - 5489.3 - 5490.0 60 5516.8 - 5490.3 - 5491.0 61 5518.0 - 5491.3 - 5492.0 62 5519.0 - 5492.3 - 5493.0 63 5520.5 - 5493.3 - 5494.0 64 5521.3 - 5494.3 - 5495.0 65 5522.3 - 5495.3 - 5496.0 66 5523.3 ~ 5496.3 - 5497.0 67 5524.3 - 5497.3 - 5498.2 68 5525.0 - 5498.5 - 5499.0 69 5525.4 - 5499.3 - 5500.0 70 5526.3 - 5500.3 - 5501.0 71 5527.3 ~ 5501.3 - 5502.0 72 5528.4 - 5502.3 - 5503.0 73 5529.4 - 5503.3 - 5504.0 74 5530.5 - 5504.3 - 5505.0 75 5531.3 - 5505.3 - 5506.0 76 5532.4 - 5506.3 - 5507.0 77 5533.5 - 5507.3 - 5508.0 78 5534.7 - 5508.3 - 5509.0 79 5535.5 - 5509.3 - 5510.0 80 5536.2 - 5510.3 - 5511.0 81 5537.4 - 5511.3 - 5512.0 82 5538.3 - 5512.3 - 5513.0 83 5539.5 - 5513.3 - 5514.0 84 5540.3 - 5515.0 5516.2 5516.8 5518.0 5519.0 5520.2 5521.0 5522.0 5523.0 5524.0 5525.0 5525.2 5526.0 5527.0 5528.1 5529.1 5530.2 5531.0 5532.1 5533.2 5534.0 5535.5 5536.0 5537.1 5538.0 5539.2 5540.0 5541.2 85 86 87 88 89 90 91 92 5541.5 - 5542.0 5542.5 - 5543.0 5543.3 - 5544.1 5544.4 - 5545.0 5545.3 - 5546.0 5546.0 - 5546.3 5546.6 - 5547.0 5547.4 - 5547.6 Page 1 7/24/97 ii ARCO Alaska, Inc. "Tarn" 4 Kuparuk River -SW Field Preserved Core Box Inventory Core # 1 5459.0 - 5547.6 1 5459.3 - 5461.2 2 5461.5 - 5464.0 3 5464.3 - 5467.0 4 5467.3 - 5469.0 5 5469.3 - 5472.0 6 5472.3 - 5474.0 7 5474.3 - 5477.0 8 5477.3 - 5479.2 9 5479.5 - 5482.0 10 5482.3 - 5484.0 11 5484.3 - 5487.0 12 5487.3 - 5489.0 13 5489.3 - 5492.0 14 5492.3 - 5494.0 15 5494.3 - 5497.0 16 5497.3 - 5499.0 17 5499.3 - 5502.0 18 5502.3 - 5504.0 19 5504.3 - 5507.0 20 5507.3 - 5509.0 21 5509.3 - 5512.0 22 5512.3 - 5514.0 23. 5514.3 - 5516.8 24 5516.8 - 5519.0 25 5519.0 - 5521.0 26 5521.3 - 5524.0 27 5524.3 - 5526.0 28 5526.3 - 5529.1 29 5529.4 - 5531.0 30 5531.3 - 5534.0 31 5534.0 - 5536.0 32 5536.2 - 5538.0 33 5538.3 - 5541.2 34 5541.5 - 5543.0 35 5543.3 - 5546.0 36 5546.0 - 5547.6 Page 1 7/24/97 MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: David d oh ns~t~ DATE: Chairman THRU: Blair Wondzell, ,~~ FILE NO: P. I. Supervisor FROM: Doug Amos,C-~ SUBJECT: Petroleum Inspe~or July 17, 1997 i99hgoee.doc Confidential: Yes Attachment Only__ _, NoX, · Location Clearance Exploratory Tarn 2 ,3, 3A and 4 PTD #'s 97-11, 97-24 97-36 & 97-25 Tuesday July 15, 1997' I traveled to KRU and accompan~Arco representative Larry Brown, Leon Linch, DNR and Raymond Peterson, DEC to the following 4 exploratory locations to conduct the location clearance inspections: TARN #2, PTD 97-0011 · TARN #3, PTD 97-0024 TARN #3A, PTD 97-0036' TARN #4, PTD 97-0025- I found all the referenced locations and ice road route~clean and devoid of debris. The only evidence of the well location was a mound of overburden covering the well bores. These mounts were still frozen and had not yet had time to subside however there was signs of vegetation returning to the overburden. I recommend that these location be approved for final abandonment. SUMMARY· I conducted location clearance inspection on Arco's exploratory wells Tarn 2, 3, 3A and 4. Tarn 2, 3, 3A & 4, 4 test hours, no failures. cc: Well Files Tarn 3, 3A and 4 t ai~ "r-am 2. Attachment' 199HGOEE, 199HGPEE, 199HGQEE, 199HGFIEE.XLS STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION Surface Abandonment / Location Clearance Report ( Title 20 AAC 25. Article 2 ) FILE INFORMATION: Operator: Arco Alaska Inc. Address: P O. Box 100360 Anchorage, Alaska 99510-0360 Surface Location: 1.119 F N L. 509 F W Section I .T 9 N ,R 7 E Inspection Date: 7/15/97 Steel Post OD: (4" min) Top of Marker Post Closed With: Distance Below Final Grade Level: Side Outlets: All valves and nipples removed ? L ,M U Well Name: Tam # 4 PTD No.: 97-0025 APl No. 50- 103-20249 Unit or Lease Name: N/A Field and Pool: Tarn Exploration Downhole P&A Date: 20 AAC 25.125 - ABANDONMENT MARKER: Approval Date: "Length (10' min.) ft. Height Above Final Grade Level (4' min.) (Welded, Cmt., Cap), Set: (On Wellhead, Csg, In Cmt) f. All openings closed ? With Marker Plate Diameter: 16" Marker Plate Attached To: Wellhead "Thickness: 0.5 "Distance Below Final Grade Level: Cutoff Csg X Other 4 ft. nformation Beadwelded Directly to Marker Post or Blind Marker Plate: ~)perator: Unit / Lease Name: Well Name: Remarks: Surface Location: F L. F L Section ,T ,R ,M Inspection Date: 7/15/97 20 AAC 25.170 - LOCATION CLEANUP: =ITS: Filled In: N/A Liners Removed or Buried: SURFACE CONDITION OF PAD AND / OR LOCATION: ( Note when different from file information) Tundra Approval Date: N/A Debris Removed: Yes ( Rough, Smooth. Contoured. Flat, Compacted ) Type &Quan. of Debris if any remaining on pad and / or location: None Clean: Yes TYPE AND CONDITION OF SURROUNDING AREA: Tundra ( Wooded,Tundra,Grass, Brush. Did,Gravel,Sand) Clean: Yes Type &Quan. of Debris if any remaining on surrounding area: None TYPE AND CONDITION OF ACCESS ROAD AND SURROUNDING AREA: Ice ( Dirt, Gravel, Ice, Other) Clean: Yes Type &Quan. of Debris if any remaining on access road or surrounding area: None CLEANUP WORK REMAINING TO BE DONE: None RECOMMENDED FOR APPROVAL OF ABANDONMENT: Yes X" No ( If "No" See Reason ) Distribution: Reason: orig - Well file c- Operator FINAL INSPECTION: Yes X No c- Database c-Inspector INSPECTED BY: Doug Amos DATE: 7/15/97 Fi-000 (Rev. 3/93) 199HGREE.XLS ARCO Alaska, Inc. Post Office Box 100360 Anchorage, Alaska 99510-0360 Telephone 907 276 1215 June 17, 1997 Mr. David J. Johnston Commissioner State of Alaska Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Subject: Tam #4 (Permit No. 97-25/397-059) Well Completion Report Dear Mr. Commissioner: ARCO Alaska, Inc., as operator of the exploration well Tarn #4, submits the enclosed revised "Well Completion Report" (form 407). This revision involves more specific information for the actual P&A operations in the drilling summary. The Commission is requested to keep confidential the enclosed information due to the exploratory nature of the well. If you have any questions regarding this matter, contact me at 265-6206. Sincerely, M. Zanghi Drilling Superintendent Kuparuk Development MZ/skad STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COiv, MISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Siatus of Well .... Classification of Service Well ' [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit N~nber ARCO Alaska Inc. 97-25 397-59 3. Address 8. APl Numlaer .......... P. O. Box 100360, Anchorage, Alaska 99510 50-103-20249 4. Location of well at sud~e ................... 9. Unitor Lease Name 1120' FNL, 510' FWL, Sec. 1, TDN, R7E, UM Exploration At top of productive interval 10. Well Number same as above Tarn 4 At total depth 11. Field and Pool ....... same as above 5. Elevation in feet (indicate KB, DF, etc.) 16. Lease Designation and Serial No. Exploration RKB 28', Pad 128'I ADL 375073, ALK 4297 12. Date Spudded i13. Date T.D. Reached 114. Date Comp., Susp., or Aband.}15. Water depth, if offshore 116. No. of Completions 3/12/97 ! 3/19/97I ... 3/22/97! N/A MSLI One 17. Total Depth (MD+TVD)118. PlUg Back Depth (MD+TV_D)I19. Directional Surveyl20. Depth where SSSV set~l. Thickness of Permafrost ._ 6150. 6150 FT~Fr] []Yes i--INo I N/A MD! 1650' (Approx.) 22. Type Electric or Other Logs Run 23. CASING, LINER AND CEMENTING RECORD "' CASING l SE'I-I'_!_NG D_EpTH HOLE ....... _ SIZE WT. PER FT. GRADE ~ .... TOP__ BO-l-rOM · __S!zE CEM_ENT!NG.REC0__RD ........ A~NT PULLED 1 6" 62.5# H-40 Surf. 115' 24" 304 Sx AS I .... 9.625" 40.0# L-80 Surf. 2195' 12.25" 751 Sx Class G 'Plug #i ........ ~.'¢~i~'"' 6150' :" ,, Plug #2 2005' 2400' Plug #3 Surf. 327' 24. Perforations open to Production (MD+TVD of Top and BottOm 25. "" TUBING RECORD ' and interval, size and number) ... SIZE DEPTH SET (MD) PACKER SET (MD) MD TVD MD TVD 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. .... DEFq'H INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED ,. 27. pRODuCTION 'TEST ....... Date First production iMethod of OPeratiOn (Flowing, gas lift, etc.) ! Date of Test iHours Tested PRODUCTION FOR OIL-BBL GAs-MCF WATER-BBL' CHOICE SIZE ~GAs-OIL RATIO I, TEST PERIOD' Flow Tubingicasin~ Pr~,s§ure'CALCb-LATEb----;- --O~L-B~L .... ~,S-I~-8~ WATER-BBL OIL GRAWTY-API (CORR) 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. :'.; Form 10-407 Rev. 07-01-80 Submit In Duplicate 29. Geologic Mar' 30. '~-ormation Tests Marker Name I Measured True Vertical Include interval tested, pressure data, all fluids recovered Depth Depth and gravity, GOR, and time of each phase. .... i31. List of Attachn~'~nts ..... Summary of Daily Drilling Reports, Surveys, Schematic 32. I hereby certify that the foregoing is true and correCt to the best of--~y knowledge S ig n ed.~'~,__~ .... /-~ ; ,,~'~¢~~t__,..~/-7>~ ~..~.?~.~..4...~.7'!.t.!e.....~-....~F .L~P.!/.z.~,,u~;..~F"~J(=i~'~',,,~. Date ¢ ¢ Prepared By Name/Number: 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 Tarn #4 P&A SCHEMATIC Final 16" Conductor 115' RKB cmt Pluq #3 MD 12-1/4" Hole 9.5 Dog Mud between olugs 9-5/8" Su rf{t(;:e (~asina (~ 2195' MD-RKB Cmt 2005'- -~.RKB 9.5 Oo_o Mud between _Dluas 8-1/2" t9 ~)" Open Hole ('~ 6150' MD-RKB ~ 47~0'- (~150' MD- RKB ARCO Alaska, Inc Geological Morning Reports Well Name TARN 4 Date. 3/12/97 Days since spud 0 APl # 501032024700 AFC # AX9710 COSTS ($MM) ARCO WI GeoDay= 18 Remaining BHL LOCATION Gross Cum Cost I ARCO NRI 1119' FNL 509' FWL Sec I T9N R7E 308355I Tot. Drilling Days 18 Mud Data Mudlog Data Casing Point- Start date 3/11/97 Spud date 03/12/97 Mud Type i.a~tCa~ing: Next Casing: Spud Bkgnd G Projected TD: Mud Weight Trip G 16" @ 108 195/8" @ 2200' 6106' MD 5950' SS 10.1 (B Elev. Rig Name Daily Report: 156 1 4 1 Present 760 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 652 Point (MD) ~.00:00 4:30.130 4~3~.00 0 N/U diverter system, R/U Anadrill and Epoch. 4:30.O0 5.~30.130 0;~.00 0 Function test diverter. Test witnessed by AOGCC's Lou Grimaldi. 5.130.130 324(X) 4.130.00 0 RAJ ~wline and rig floor. Bring BHA into pipe shed. 32400 15:0~.00 6.1~.(X) 0 Hold pm-spud meeting, tag cement at 28', drill 12-1/4" hole from 28' to 304' using HWDP. ADT = 1.0. 15.~.00 17:30.00 2:3(:~.00 0 L/D HWDP, P/U BHA. Orient and pump suwey at 225'. 17:30:00 24:00~.00 6:3(Z.00 0 Drill from 304' to 760'. ADT = 3.8, .~4.1~.00 Comments/Next Activity: ~,.-) r' t~ !: ;~ ~' ~ r~ Completed rig up operations. ~'~,~ ~-~..; L, ~ ~ ~ ~ J~;.,.~ ~- !Drill ahead to 760' · PI~,¥ D~scription: TO PS: Prognosis iclual The Turonian Tarn objective is deposited ~D' TVD' ISSl MD' 'rVD'(SSl in different submarine fan systems that !0-80 (K-10) 2854 2698 , may contain stratigraphically trapped ¢-40 (K-5) 4150 3994 hydrocarbons on the southern flank of ,Top Tarn Inte~j 5279 5123 the Colville High Top Sand , 5431 5275 , Base Tarn Inter 5782 5626 , C-35 (K-3) 5840 5684 Show Description: TD 6106 5950' I ' Oper. Coord. Renee Hannon Geo Phone 265-6220 FAX 265-1479 Proi. Geol. ReneeHannon Proi. Geonh. Monte Mabry Wellsite Geol_ Gerrv VanKooten 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 5684 6106 5950 ARCO AlaSka, inc Geological Morning Reports Well Name TARN 4 Date- 3/11/97 Days since spud 0 APl # 501032024700 AFC # AX9710 Costs ($MM) ARCO WI GeoDay= 18 Remaining BHL LOCATION Gross Cum Cost I ARCO NRI 1119' FNL 509' FWL Sec I T9N R7E 218779I ToL Drilling Days 18 Mud Data Mudlog Data Casing Point- Start date 3/11/97 Spud date Mud Type Last Casing: Next Casing: Spud Bkgnd G Projected TD: Mud Weight Trip G 16" @108 95/8" @ 2200' 6106' MD 5950' SS 10.1 KB Elev. Rig Name Daily Report: 156 I 4 1 Present 108 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 0 Point (MD) 13:30.~30 21:0~.00 7:3~.00 0 Move rig from Tarn #3A to Tam ~4 and spot complexes. 21.130:00 24:0~.00 3.1:X~.00 0 Move rig from Tam #3A to Tam ~4 and spot complexes. 24.1~.00 Note 1' Rig accepted 2100 hrs, 3/11/97. Note 2: RKB is 28' above pad level. Pad level is 128' ASI_. RKB is 156' ASL. Comments/Next Activity: Move rig from Tarn #3A to Tarn #4 and spot complexes. Rig accepted 2100 hrs, 3/11/97. RKB is 28' above pad level. Pad level is 128' ASL. RKB is 156' ASL. Play Description: TOPS: Prognosis Actual ~The Turonian Tarn objective is deposited MD' TVD' (SS) MD' TVD' (SS) in different submarine fan systems that c-8o (K-10) I 2854 2698 may contain stratigraphically trapped c-4o (K-5) I 4150 3994 hydrocarbons on the southern flank of Top Tarn Inter ' 5279 5123 the Colville High Top Sand 5431 5275 , Iaase Tarn Inter 5782 5626 ~ Show Description: IC-35 (K-3..~~_~.~ 5840 5684 ' ITD 6106 59501 i lOper. Coord. Renee Hannon Gao Phone 265-6220 FAX 265-1479 Proi. Geol. Renee Hannon Proi. Geonh. Monte Mabrv Well-~ite Geol. Gerrv Van Kooten 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 5684 6106 5950 mailed 2/~7 b~ kal ARCO Alaska, Inc Geological Morning Reports Well Name TARN 4 Date: 3/13/97 Days since spud 1 APl # 501032024700 AFC # AX9710 COSTS ($MM) ARCO WI GeoDays 17 Remaining BHL LOCATION Gross Cum Cost I ARCO NRI 1119' FNL 509' FWL Sec 1 T9N R7E 412327I TeL Drilling Days 18 Mud Data Mudlog Data Casing Point: Start date 3/11/97 Spud date 03/12/97 Mud Type Last Casing: Next Casing: ' Spud Bkgnd G projected TD: Mud Weight Trip G 16" @ 108' 95~ @220o' 6106' MD 5950' SS 10.5 KB Elev. Rig Name Daily Report: 156 1 4 1 Present 2210 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 1450 Point (MD) 200.~3 20:00;00 2~.00.130 0 Drill 12-1/4' hole from 760' to 2210'. ADT = 9.5. 20.130.00 21:0~.00 1.1~.00 0 C&C hole, pump around hi-vis sweep. 21.~0:.00 792(X) 1.1:X~.00 0 Short trip to HWDP. SLM-nocorrecfion. RIH. ~'9200 23:30:.00 1:30:.00 0 C&C hole for casing. Pump around hi-vis sweep. 23:30:.00 24:00.00 0:30:.00 1 POOH to run 9-5/8" casing. 24.1:X):.00 Comments/Next Activity: Drilled ahead to 2210'. Conditioned hole for surface casing. Currently setting surface casing. Expect to drill out of surface casing late tonignt or early Saturday. , Play Description: TO PS: Prognosis Actual The Turonian Tarn objective is deposited MD' TVD' (SS) MD' ~VD' (SS) in different submarine fan systems that c-80 (K-10=~~ ! 2854 2698 , I may contain stratigraphically trapped c-4o (K-5) ~ 4150 , 3994 j ,[hydrocarbons on the southern flank of Top Tarn Inter 5279 5123 the Colville High Top San~d 5431 I 5275 Base Tarn Inter ~ 5782 5626 Show Description: C-35 (K-3) i 5840 5684 TD 6106 5950 ~ I I Oper. Coord,Renee Hannon Geo Phone 265-6220 FAX 265-1479 Pro!. Geol. Renee Harmon Proi. GeoDh. Monte Mabry Wellsite Geol. Gerrv Van Kooten 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 5684 6106 5950 revised 2/;7 by ARCO Alaska, Inc Geological Morning Reports Well Name TARN 4 Date: 3/14/97 Days since spud 2 APl # 501032024700 AFC # AX9710 Costs ($MM~) ARCO WI GeoDays 16 Remaining BHL LOCATION Gross Cum Cost I ARCO NRI 1119' FNL 509' FWL Sec 1 T9N R7E 580772I ToL Drilling Days 18 Mud Data Mudlog Data Casing Point: Start date 3/11/97 Spud date 03/12/97 Mud Type Last Casing: Next Casing: Spud Bkgnd G Projected TD: Mud Weight 9-5/8"~ 2195' 7" @ 595o' 6106' MD 5950' SS 10.4 Trip G KB Elev. Rig Name Daily Report: 156 I 4 1 Present 221 0 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 0 Point (MD) ~.00:00 1.130.130 1.13~.00 1 Conlinue PO~ to run 9-5/8" casing. 1.1:)0.~0 3.130.130 2.1~.00 0 I_/D 12-1/4" BHA. 3.130.1:)0 14400 1.1~.00 0 Clear floorand R/U to run casing. 14400 8.~30.~30 4.1~.00 0 Hold PJSM, run 51 jts of 9-5/8", 40~, L-80, BTC casing. Hole light from 850' to 1000'. (Mud log shows coal 8.1:)0.~X) 1~.0~.00 2.1~.00 0 C&C hole for cementing. 10.~0;.00 1Z0(~.00 2.1~.00 0 Hold PJSM, P-test lines to 3500, pump 1 st cement stage: blm p~ug, 20 biffs H20, 76 biffs 15.8 ppg cmt, top 12.1~.00 1~30~.00 0:3(:~.00 0 Checkfloats-OK. Pressure casing to2750, shearopen stage cementer. 12:3~.00 13:3~.00 1 .t~.00 0 C&C hole above stage cementer for 2nd cement stage. 13:3~.00 15:0(~.00 1 .~30~.00 0 Hold PJSM, P-test lines to 3500, pump 2nd cement stage: 20 biffs H20, 185 bbls 10.5 ppg cmt, 10 bbls 15.~.00 16:00.00 1 .I:X~.00 0 Back out and L/D landing joint, R/D casing and cementing equipment. ! 16.1~.00 18:0(~.00 2.1~.00 0 N/D surface stack and diverter system. 18.~.00 23:00~.00 5.1~.00 0 N/U speed head, adapter flange, BOP stack and flow & choke lines. 23.1~.00 24:0~.00 1.1~.00 0 Test BOPE. Test witnessed by AOGCC inspector Chuck Scheve. 24.1~.00 Comments/Next Activity: Drilled ahead to 2210'. Conditioned hole for surface casing. Currently setting surface casing. Expect to drill out of surface casing late tonignt or early Saturday. Play Description: TO PS: Prognosis Actual The Turonian Tarn objective is deposited MD' 'I'VD' (SS) MD' 'I'VD' (SS) in different submarine fan systems that ~c-8o (K-10) 2854 2698 may contain stratigraphically trapped C-40 (K-5) I 4150 3994 hydrocarbons on the southern flank of Top Tarn Inter 5279 5123 , the Colville High 'Top Sand 5431 5275 , Base Tarn Inter 5782 5626 Show Description: C-35 (K-3) 5840 , 5684 TD 6106 5950 I I Oper. Coord. Renee Hannon Geo Phone 265-6220 FAX 265-1479 Proi. Geol. Renee Hannon Proi. Geooh. Monte Mabrv Well-~ite Geol. Gerry Van Kooten 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 5684 6106 5950 mu=ed 2/e7 by k~ ARCO Alaska, Inc Geological Morning Reports Well Name TARN 4 Date- 3/15/97 Day~.incespud 3 APl # 501032024700 AFC # AX9710 Costs ($MM) ARCO WI GeoDay= 15 Remaining BHL LOCATION Gross Cum Cost I ARCO NRI 1119' FNL 509' FWL Sec 1 T9N R7E 676o12I Tot. Drilling Days 18 Mud Data Mudlog Data Casing Point: Start date 3/11/97 Spud date 03/12/97 Mud Type I.astCaaing: Next Casing: LSND Bkgnd G 5 , Projected TD: Mud Weight 9-S/8" ~ 2,196' 7" @ 5,95o' 6106' MD 5950' S S 9.5 Trip G KB Elev. Rig Name Daily Report: 156 I 4 1 Present 2973 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 763 Point (MD) ~.00.~)0 3:30.130 3:3~.00 0 Test ELOPE to 500/3(XX) psi. 3:30.~X) 4.~30.130 1.130~.00 0 Work on kelly spinner, install wear bushing. 4."30.1:)0 27000 3.1~.00 0 M/U 8-1/Z' BHA and RIH to 1245'. Tag soft cement. 27000 1~.0(~.00 2:30~.00 0 Drill/wash soft cement to stage cementer @ 1308'. Pressure test csg to 2000 psi for 10 min, drill out stage 10.1:~.00 1~.3(~.00 0:3~.00 1 RIH to 1800', tag cement. 10:3~.00 1~>00:00 1:30~.00 0 Drill cmt stringers from 1800' to 1915' - b3p of hard cmt. 12.1:X~.00 14:0(t.00 2.~X~.00 0 Drill hard cement, baffle landing collar, more hard cement to float collar @ 2116'. 14.1:X~.00 15:0(~.00 1 .~30:00 1 Pressure test casing to 2000 psi for 30 minutes - O1~ 15.~x~.00 16:00:00 1 .~.00 0 Drill float collar, cement, float shoe and 20' of new hole. 16.1~.00 16:30~.00 0."3~.00 0 Pull up into shoe and displace 10.0 ppg spud mud from hole w/new 9.5 ppg LSND mucL 16:3~.00 17:0~.00 0:30.00 1 Perform shoe test to 740 psi - 16.0 ppg EMW. 17.1:x~.00 24:0~.00 7.1:X~.00 0 Drill 8-1/2" hole from 2220' to 2973'. ADT = 3.58 24.130:.00 Comments/Next Activity: , Depth @ 06:00, 3351 Next activity drill ahead. ~;'~ Play Description: TOPS: Prognosis Actual The Turonian Tarn objective is deposited MD' TVD' (SS) UD' TVD' (SS) in different submarine fan systems that c-80 (K-10) : 2854 2698 ' 2579 2423 may contain stratigraphically trapped c-40 (K-5) J 4150 3994 hydrocarbons on the southern flank of Top Tarn Inter 5279 , 5123 Top Sand i 5431 5275 the Colville High Base Tarn Inter 5782 5626 Show Description: C-35 (K-3) 5840 , 5684 TD 6106 5950 Oper. Coord. Renee Harmon Geo Phone 265-6220 FAX 265-1479 Proi. Gaol. ReneeHannon Proi. Geonll, Monte Mabry Wellsite Geol. Jim Sallee 2854 2698 4150 3994 5279 51 23 5431 5275 5782 5626 5840 5684 6106 5950 mv~4~d 2/97 by kat ARCO Alaska, Inc Geologica Morning Reports Well Name TARN 4 Date- 3/1~/97 Days since spud 4 APl # 501032024700 AFC # AX9710 COSTS ($MM) ARCO WI GeoDay~ 14 Remaining BHL LOCATION Gross Cum Cost J ARCO NRI 1119' FNL 509' FWL Sec 1 T9N R7E 770051J Tot. Drilling Day, 18 rMud Data Mudlog Data Casing Point- Start date 3/11/97 Spud date 03/12/97 Mud Type Last Casing: Next Casing: ' LSND Bkgnd G 3 Projected TD: Mud Weight Trip G 34 9-5/8"@2,19s' 7'@5,95o' 6106' MD 5950' SS 9.5 KB Elev. Rig Name Daily Report: 156 I 4 1 Present 5124 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 2151 Point (MD) ~.00.130 3.130.130 3.1~.00 0 Dnll 8-1/2" hole from 2973' to 3224'. ADT = 1.95 hrs. 3.130.130 3:30.130 0:3~.00 0 CBU, check for flow, pump dry job. 3:30.~0 16200 1.1:XZ. O0 0 Make 11-stand wiper trip. NotJght spots. 163:30 14:0(X.00 9:30~.00 0 Drill from 3224' to 4221'. ADT = 5.70 hrs. 14.~3~.00 14:3~.00 0:30.00 0 CBU, check for flow, pump dry job. 14:3~.00 15:3C~.00 1 .~X~.00 0 Make 11-stand wiper trip. No tight spots. 15:30.00 24:0(~.00 8:3~.00 0 Drill from 4221' to 5124'. ADT = 4.63 hrs. 24.1~.00 Comments/Next Activity: Depth @ 0:600, 5215. M/U Rotary BHA (to locate core pt.) Next activity drill ahead. Play Description: TOPS: Prognosis Actual The Turonian Tarn objective is deposited MD' TVD' (SS). MD' TVD' (SS) in different submarine fan systems that c-80 (K-10) ~ 2854 2698 2579 2423 may contain stratigraphically trapped c-40 (K-5) 4150 3994 4220 4066 hydrocarbons on the southern flank of Top Tarn Inter 5279 5123 the Colville High Top Sand 5431 5275 Base Tarn Inter 5782 5626 Show Description: ~C-35 (K-3) 5840 5684 ITD ~ 6106 5950 ', I , I Oper. Coord. Renee Hannon Geo 'Phone 265-6220 FAX 265-1479 Pro!. Geol, Renee Harmon Proi. Geoz)h. Monte Mabrv Wellsite Geol_ Jim Sallee 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 5684 6106 5950 m~aed 2~7 by ka~ ARCO Alaska, Inc Geologica Morning Reports Well Name TARN 4 Date: 3/17/97 Days s~ince spud 5 APl # 501032024700 AFC # AX9710 Costs ($MM) ARCO WI C,~D~ BHL LOCATION Gross Cum Cost I ARCO NRI Remaining 1119' FNL 509' FWL Sec I T9N R7E 875187I Tot. Drilling Day8 18 Mud Data !Mudlog Data Casing Point: 'Start date 3/11/97 Spud date 03/12/97 Mud Type Last Casing: Next Casing: LSND Bkgnd G 3 Projected TD: Mud Weight Trip G 80 9-S/8"@2,195', 7" @ 5,95o' 6106' MD 5950' SS 9.5 KB Elev. Rig Name Daily Report- 156 1 4 1 Present 5459 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 335 Point (MD) ~.00:00 0~30.1:)0 0~:~.00 0 Drill 8-1/2" hole from 5124' to 5215'. ADT = .5 hrs. 0."30.1:)0 1.130.130 0:30:.00 0 CBU. 1.130.130 10800 2.1:)0:00 I Pump dry job, POH for rotary core-point-finding assembly. 1 __ne00__ 4.t30.130 1.130~.00 0 Repair drawworks w/bit at shoe. 4.130.130 5.~X).I:X) 1.~3~.00 I Continue POH. 5.130.1:)0 6:30.130 1.~30:.00 0 Download MWD, L/D mud motor, M/U rotary BHA. 5:30.130 9:30.130 3.1:X~.00 I Surface test MWD and RIH. MWD MAD pass from 5142' to 5215', 9:30.130 16:0~.00 6:30.00 0 Drilt from 5215' to 5449'. ADT = 520. ~ 16.~0:.00 18:0~.00 2.~O:.00 0 CBU for samples. Ddl110' from 5449' to 5459', CBU for samples. 1700 units gas on each CBU. '18.~3~.00 20:.3(:~.00 2:30:00 1 POH for coring assembly. '20~3~.00 21:30.00 1.1~.00 0 Download MWD, L/D NB Sl~ and bit, M/U mud motor and stand back. 21~):.00 24:00.00 2:30~.00 0 P/U and M/U 90' coring BHA. 24.130.00 Comments/Next Activity: Depth @ 0:600, 5480'. Coring @ 5480' (21' cut so far). Next activity continue coring , Play Description: TOPS: Prognosis Actual The Turonian Tarn objective is deposited Me' we'(ss) MD' rW'(SS) in different submarine fan systems that c-80 (K-10) 2854 2698 , 2579 2423 may contain stratigraphically trapped C-40 Tarn(K'5) , 52794150 51233994 : 4220 4066 hydrocarbons on the southern flank of .Top Inte~~ 5341 5185 High .Top Sand 5431 5275 ' 5453 5297 the Colville Base Tarn Inter 5782 5626 ' iC-35 (K-3) 5840 I 5684 Show Description: ~ i ' 5442'-5465': Good Show 40% yellow flourescence; slow T D I 6106 streaming dull yellow cut; bright yellow residual ring cut. , , I , ! ~ I Oper. Coord. Rene~ Hannon GDo Phone 265-6220 FAX 265-1479 Proi_ Geol_ Renee Harmon Proi. Geonh. Monte Mabry WellsJte Geol. Jim Sa. lieD 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 5684 6106 5950 , ARCO Alaska, Inc Geological Morning Reports Well Name TARN 4 Date: 3/18/97 Day~aincespud 6 APl # 501032024700 AFC # AX9710 Costs ($MM) ARCO WI G~[~W ~2 ' ' Remaining BHL LOCATION Gross Cum Cost I ARCO NRI 1119' FNL 509' FWL Sec I T9N R7E 960448I Tot. Drilling Days 18. Mud Data Mudlog Data Casing Point: Start date 3/11/97 Spud date 03/12/97 Mud Type Last Casing:' Next Casing: LSND Bkgnd G 10 Projected TD: Mud Weight 9.S/8" e 2,195' tva 61 06' MD 5950' SS 9.5 Trip G 54 KB Elev. Rig Name Daily Report: ' 156 1 41 Present 5546 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: / (MO) 87 Point (MD) ~.00.130 1 .~0.1:x) 1.1~.00 0 M/U csnng oH A. ' 1.130,130 4:30.00 3;3~.00 1 RIH w/coring assembly. L/D 2 jts, kelly up, break circulation. Wash and ream from 5421' to 5459', CBU, 4:30.130 378(30 6.1~.00 0 Core from 5459' to 5546'. ADT = 4,74 hm. 37800 13:(X~.00 2:3(Z.00 1 CBU, pump dq/job and POH wilh core barrel. 13.~.00 14:3(~.00 1:3(:~.00 0 Stand back HWDP and DCs. 14:3~.00 15:30~.00 1.13(~.00 0 I./D com, (recovered 87', 100%) 15:30~.00 16:3(x.00 1.1:X~.00 0 Help Geologist wilh core in pipe shed. 16:3(~.00 18:0(~.00 1:3(~.00 0 L/D core barrel. 18.~3~.00 2~.30~.00 2:30:.00 0 L/D coring BHA, M/U drilling BHA, program CDR, shallow test MWD and mud motor. 20:30.00 22:00.00 1 .~0;.00 I RIH. 22.1~.00 24:00~.00 2.1~.00 0 P/U kelly and make MAD pass from 5440' to 5546'. 24.1~.00 Comments/Next Activity: Depth: drilling @ 6048 Next activity continue drilling and TD well Play Description: TO PS: Prognosis Actual The Turonian Tarn objective is deposited MD' , TVD'(SS) MD' TVD'(SS) in different submarine fan systems that :c-80 (K-10) ~ 2854 2698 ~ 2579 2423 may contain stratigraphically trapped c-40 (K-5) 4150 3994 I 4220 4066 hydrocarbons on the southern flank of Top Tarn Inter 527g ' 5123 I 5341 , 5185 the Colville High Top Sand 5431r~ 5275, 5453 5297 Base Tarn Inter 5782 5626 5520 5364 Show Description: C-35 (K-3) , 5840 i 5684 5710 5554 5459'-5512': 80% yellow flourescence; immed streaming T D 6106 5950 milky yellow cut; bright yellow residual ring cut. , , I ~ Oper. Coord. Renee Hannon Geo Phone 2~5-6220 FAX 265-1479 Pro!. Geol. Renee Hannon Proi_ Geo~h. Monte Mabrv Well-~ite GeOl, Jim Sallee 2854 2698 4150 3994 527g ' 5123 5431 5275 5782 5626 5840 5684 6106 5950 ARCO Alaska, inc Geological Morning Reports 'Well Name TARN 4 Date' 3/19/97 Days eince spud 7 APl # 501032024700 AFC # AX9710 Costs ($MM) ARCO WI GeoDays 11 ' ' ' Remaining BHL LOCATION Gross Cum Cost ~ ARCO NRI 1119' FNL 509' FWL Sec 1 T9N R7E 1044887I ToL Drilling Days 18 , IMud Data ,Mudlog Data Casing Point: Start date 3/11/97 Spud date 03/12/97 M'~d Type 'l.a~tCa~ing: Next Casing: ' LSND Bkgnd G 30 Projected TD: Mud Weight 9-S/8" O 2,19s' rye 6150' MD 5994' SS 9.5 Trip G 161 KB Elev. Rig Name Daily Report: 156 1 4 1 Present 6150 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 604 Point (MD) ~.00.03 7.t:x).1:D ' 7.1~.00 0 phil 8-1/2" ho e from 5546' to 6150' TD. ' ' r7.00.1:x) 8.1~.1:x) 1.1~00 0 cim hole dean, pump dry job. 18.~X).130 39600 3.130:00 0 Short trip to casing shoe, lhe~ back to bottom. 39600 12:0~.00 1.1:XZ.00 0 Circulate hole clean, pump dry job. 12.~(~.00 15:3~.00 3.~::~0 1 POH for logs, stand back BHA, download LWD. 15:3~.00 22:3~.00 7.1~.00 0 PJSM, R/U SWS, run OH logging Run #1: GR/Dipole Sonic/SP/Dansity/Neutmn/Micmlog. POH. 22:3~.00 24:0~.00 1:3~.00 0 P/U and run OH logging Run ~2: Numar MRI. 24.1~.00 Comments/Next Activity: Made hole cleanout run with bit to 6160' TD. ;"~-;;~--~ ...... ' '~i '~ / ~- ~ '~ Ran sonic, neutron-denisty and Numar wire-line logs. :'L-.. {.~ I. ~: ~., Currently preparing to run RFT log. !Logging should be completed this afternoon. ~ ~, ~.. ~ {~ i'i? ,~l-:~"';?,~/ ,',4 ~'~_.y,.'., , .... · ~,_.,:~ '..,:~. ~'~"~' ',,",i,"~.'~, Play Description: TOPS: Prognosis Actual The Turonian Tarn objective is deposited MD' TVD' (SS) MD' TVD' (SS) in different submarine fan systems that ~c-6o (K-10) , 2854 2698 ' 2579 2423 may contain stratigraphically trapped c-40 (K-5) 4150 3994 4220 4066 hydrocarbons on the southern flank of Top Tarn Inter 5279 , 5123 , 5341 ,,5185 the Colville High Top Sand 5431 I 5275 5453 5297 Base Tarn Inter 5782 5626 5520 5364 Show Description: C-35 (K-3) 5840 ; 5684 5710 5554 TD 61061 5950 6150 5994 I I , OPer. Coord. Renee Harmon Geo Phone 265-6220 FAX 265-1479 Proi. Geol_ ReneeHannon Proi. GeoDh. Monte Mabry Wellsite Geol. Jim Sallee 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 5684 6106 595O reviled 2/e7 i~ k~ ARCO Alaska, Inc Geological Morning Reports Well Name TARN 4 Date- 3/20/97 Days since spud 8 APl # 501032024700 AFC # AX9710 Costs ($MM) ARCO WI C, eoDay, 10 ' Remaining BHL LOCATION Gross Cum Cost I ARCO NRI 1119' FNL 509' FWL Sec I T9N R7E 1248983! Tot. Drilling Days 18 · Mud Data Mudlog Data Casing Point: !Start date 3/11/97 Spud date 03/12/97 Mud Type I.astCasing: Next Casing: ' LSND Bkgnd G 30 Projected TD: Mud Weight 9-S/8" @ 2,195' n/a 6150' MD 5994' SS 9.6 Trip G 161 KB Eiev. Rig' Name Daily Report: 156 I 4 1 Present 6150 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) 0 Point (MD) ~.~30.1:)0 2_130.130 2.13~.00 0 I:inish running log Run W2 - Numar MRI. Hole getting a little sticky. 2.130.130 3.130.130 1.130.00 0 R/D SWS. 3.130.1:)0 19800 2.~..00 I RIH to clean out hole. 1~ 6~30.1:)0 1.1:X~.00 0 C&C hole for logs. 6:30.t:X) 9.130.130 ~00 1 POH. Hole in good condition. 9.1:X).1:X) 1~.0(:~.00 1.t30~.00 0 RAJ SWS. 10.1:X~.00 15:0(~.00 5.t:X~.00 0 Log Run ~3 - RFT. 15.1:X~.00 15:3~.00 0:3~.00 0 R/D SWS. 15:3(~.00 1~.3~.00 4.1~.00 0 Wait on orders. 19:30~.00 23:0(~.00 3:3~.00 0 Received ordem to P&A well. M/U BHA and RIH. POH and L/D BHA. 23.1:X~.00 24:0~.00 1.1~.00 0 Clear MWD and LWD tools off floor and pull wear bushing. 24.130:.00 Comments/Next Activity: Completed running RFT 'l'og. ' Best zone is at 5430' with a permeability of 15 md. Sand at 5510' has a perm of 5 md. Fluid sample from 5430 is mostly gas with only small amount of fluid. Currently setting plug to P&A well. , Play Description: TOPS: Prognosis Actual The Turonian Tarn objective is deposited MD' TVD' (SS) MD' TVD' (SS) in different submarine fan systems that ~ 2854 2698 2579 2423 may contain-stratigraphically trapped LC-40 (K-5) : 4150 3994 4220 4066 hydrocarbons on the southern flank of .~!T°P Tarn Inter 5279 8123 5341 5185 the Colville High ,Top Sand , 5431 5275 I 5453 5297 'Base Tarn Inter ' 5782 5626" 5520 5364 Show Description: C-35 (K-3) 5840 5684: 5710 5554 TD 6106 .~ 5950i 6150 5994 i , , , , i I , Oper. Coord. Renee Hannon Geo PhC)ne 265-6220 FAX 265-1479 Proi. Geol. Renee Hannon Proi. Geoah. Monte Mabry Wellsite Geol. Jim Sallee 2854 2698 4150 3994 5279 8123 5431 5275 5782 5626 5840 5684 6106 595O ARCO Alaska, Inc Geological Morning Reports Well Name TARN 4 Date: 3/21/97 Days since spud 9 APl # 501032024700 AFC # AX9710 Costs ($MM) ARCO WI GeoDay= 9 Remaining BHL LOCATION Gross Cum Cost I ARCO NRI 1119' FNL 509' FWL Sec 1 T9N R7E 1328220I Tot. Drilling Days 18 , Mud Data Mudlog Data Casing Point: Start date 3/11/97 Spud date 03/12/97 Mud Type I.a~tCasing: Next Casing: LSND Bkgnd G 30 Projected TD: Mud Weight Trip G 161 9.S/8" @ 2,195' tva 61 50' MD 5994' SS 9.6 I(a Elev. Rig Name Daily Report: 156 1 4 1 Present 61 50 Plug Back Depth (MD) Depth (MD) Progress Kick off ~Current Activity: (MD) 0 Point (MD) 0:.00.~0 2.130.130 2.130:.00 1 PAJ 36 its DP and mule shoe, RIH. 2.~0.O0 3.~30.~:)0 1.1:X~.00 0 Slip and cut drilling line. 3.130.130 1621:30 1~3:.00 I Continue RIH to 6150' 'rD. 16200 6:30.130 2:0(~.00 0 C&C mud and hole in preparation for seffing abandonment plugs. RAJ Dowell. 6~30.130 1~.3(~.00 4.t:XZ.00 0 Place abandonment Plug #1 from 6150' TD to 4750' in lhree stages. For each stage, pump 10 bbls H20, 38 10:3~.00 13:00.00 2:30:.00 1 POH to shoe laying down excess drill pipe. 13.1~.00 15:0~.00 2.130;.00 0 WOC. 15.~.00 16:30.00 1:3~.00 1 RIH to 4514' and break cim. 16:3~.00 17:00.00 0.~0:.00 0 RI H slowly, tag hard cement w/15k lbs and 35 spm at 4753'. Cement tag witnessed and approved by 17.1~.00 18:00:.00 1 .~:)0:.00 0 Circulate hole clean. 18.1:X~.00 20:.0~.00 2,t30:.00 1 POH to 2429', laying down DP. 20.13~,00 21:00:.00 1.t30:.00 0 Place abandonment Plug ~Y2 from 2400' to 1995'. Pump 10bblsH20,32bblscmtand4bblsH20. Diplace 21.130~.00 22:0(~.00 1.1~.00 0 Circulate hole dean of contaminated cement 22.00:.00 24:00.00 2.1~.00 1 POH, laying down excess DP. 24.130:.00 Comments/Next Activity: Set cement plugs to P&A the well. Play Description: TOPS: Prognosis Actual The Turonian Tarn objective is deposited MD' 'I'VD' (SS) MD' TVD' (SS) in different submarine fan systems that ~c-8o (K-10) 2854 2698 2579 2423 may contain stratigraphically trapped c-40 (K-5) 4150 3994 4220 4066 hydrocarbons on the southern flank of T°p Tarn Inter 5279 5123 'i 5341 5185 the Colville High Top Sand 5431 5275 ' 5453 5297, Base Tarn Inter 5782 5626 5520 5364 Show Description: C-35 (K-3) 5840 5684i 5710 5554 TD 6106 I 5950 ~ 6150 5994 , Oper. Coord. Renoe Harmon Oeo Phone 265-6220 FAX 265-1479 Proi. GeoL ReneeHannon Proi. GeoDh_ Monte Mabrg W~lsito GoDi. Jim Sallee 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 5684 6106 5950 ARCO Alaska, Inc Geological Morning Reports Well Nam~ TARN 4 Date: 3/22/97 Days since spud 10 APl # 501032024700 AFC # AX971023:59 Costs ($MM) ARCO WI GeoDays 8 BHL LOC'ATION' ' Gross Cum Cost I ARCO NRI Remaining 1119' FNL 509' FWL Sec I T9N R7E 1633056I ~ToL Drilling Days 18 Mud Data Mudlog Data 'Casing Point- Start date 3/11/97 spUd date 03/12/97 Mud Type Last Casing: Next Casing: LSND Bkgnd G 30 Projected TD: Mud Weight 9-S/a"@ 2,195'1 rVa 6150' MD 5994' SS 9.5 Trip G 161 KB Elev. Rig Name Daily Report- 156 1 4 1 Present 0 Plug Back Depth (MD) Depth (MD) Progress Kick off Current Activity: (MD) -6150 Point (MD) 0:.00.00 2.13o.13o 2.1~.0o o 'woc. 2.130.130 2.~30.1:X) 0:30:.00 0 RIH to tag oernenL Not set yeL POH to 1867'. 2:30.130 21600 3:30:.00 0 WOC. 21600 6:30.130 0:30:.00 0 RIH, lag hard cement at 2145' - too Iow for legal shoe plug. 6:30.~0 1~.0~.00 3:3~.00 0 Wait on delivery of addilJonai cement. 10.O~.00 11:00.00 1.1X):.00 0 Wrlfl DP at 2140', pump 10 bbls H20, 11 bbls 15.8 ppg cement and 4 bbls H20. Dislflace w/rig pump, pull 11.130:.00 15:30:.00 4:3(~..00 0 WOC. 15:3~.00 16:30~.00 1.130.00 0 RIH, tag hard cement at 2005'. Reverse out DP. ' 16:3~..00 18:00~..00 1:30.00 1 POH to 327' laying down DP. 18.~)0:00 19:.00:.00 1 .I:XZ.00 0 With DP at 327', pump 10 bbls H20, 16 bbls Amticset I crnt and 4 bbls H20. Pull 3 stands. :19.~)0:.00 21:00:.00 2.130:.00 0 Flush lines and BOP stack. N/D BOP stack and set back. 21 .~30:.00 24:0(~..00 3.13~.00 0 Pump cement into top of wellhead. Flush and break down lines. Clear cellar and clean pits. Release rig. 24.~30:.00 0 DAILY COST REFLECTS DEMOB COSTS: ESTIMATE 40 MILES AT 3,0(X) EACH + 130, 000 = 250,000. ***RIG RELEASED @ 24(30 HRS, 3/22/97*** Comments/Next Activity: Completed P&A operations. Rig released. ;"..i '. ,;.,,;~,_,~r~, - ~,.~ ~,j, ;.:,j ., Play Description: TOPS: Prognosis Actual The Turonian Tarn objective is deposited MD' TVD' (SS) MD' TVD' (SS) in different submarine fan systems that lc-80 (K-10) I 2854 2698 ,~ 2579. 2423 may contain stratigraphically trapped ~c-40 (K-5) . 4150 3994 4220 4066 hydrocarbons on the southern flank of ,'Top Tarn Inte~' 5279 5123 i 5341 5185 the Colville High i Top Sand 5431 5275 5453 5297 ~Base Tarn Inter 5782 5626 5520 5364 d-35 (K-3) I 5840 568~ 5710 5554 Show Description: TD 6106 ! 5950 6150 5994 ~ i , , Oper. Coord. Renee Hannon Gee Phone 265-6220 FAX 265-1479 Proi. Geol. ReneeHannon Proi. Geonh. Monte Mabrv Wellsite Geol. Jim Sallee 2854 2698 4150 3994 5279 5123 5431 5275 5782 5626 5840 568z~ 6106 595O m~aed 2~7 by kal AS-BU~. ER KS8 # Kg7009ACS 35 36 2,'--- TARN //4 30' ACC~$$ 500' "~---ICE PAD LIMITS (TYP) 218' -~~T._A R N #4 25't 491' LOCATED WITHIN PROTRACTED SEC. 1, TWP.. 9N., R GE 7 E., UMIAT MERIDIAN LAT. = 70' 10' 02.945" LONG. = 150' 15' 45.0.30" Y = 5,910,856.84 X = 467,.377.99 510' F.W.L., 1,120' F.N.L. ELEV ON GROUND : 125.5' TOP OF RIG ICE PAD= 127.7' TION 4 27 26 THIS SURVL~' ,TARN-,4 I Scole 1" = 2 Miles NOTES 1. COORDINATES SHOWN ARE ALASKA STATE PLANE ZONE 4, NAD 27. 2. ELEVATIONS SHOWN ARE B.P.M.S.L. .3. ALL DISTANCES SHOWN ARE TRUE. 4. BASIS OF COORDINATES - DRILL SITE 2-M AND 24-1 MONUMENTS PER LHD AND ASSOCIATES. 5. DATE OF SURVEY - 2/10/97, FIELD BK L-97-2, pg. 60. ~"~'.'.."' ~. ~ ~ /~N ~. ~oo~us /~ ~,~ss,o.~ [~1n~m ~ ' LOUNSBURY ARCO Alaska, Inc. Subsidiory of Atlontic Richfield Compony CADD FiLE NO. J ORA~NG NO: j SHEET: LKGm22S 2/~/~7 CEA-M1XX-601 D225 SURVEYOR'S CERTIFICATE I HEREBY CERTIFY THAT I AM PROPERLY REGISTERED AND LICENSED TO PRACTICE LAND SURVEYING IN THE STATE OF ALASKA AND THaT THIS PLAT REPRESENTS A SURVEY DONE BY ME OR UNDER MY DIRECT SUPERVISION AND THAT ALL DIMENSIONS AND OTHER DETAILS ARE CORRECT AS OF FEBRUARY I0, 1997. O0 JREV: 1 ~ Job No, 0450-84126 Sidetrack No. ~ Page 1 of 3 Company ARCO ALASKA, INC. Rig Contractor & No. Doyen Drilling inc. - Rig #141 Field ~EXpLORATIO.N Well Name & No. TARN ~4 Survey Section Name Definitive Survey BHI Rep. KIRT CHRISTENSEN INTL;C ' _ _ Il I II I ii I · I iiiii III I I WELL DATA Target TVD (F'r) Target Coord. N/S Slot Coord. N/S 0.00 Grid Correction 0,000 Depths Measured From: RKR ~ MSLL~ SS~.~ Target Description Target Coord. E/W Slot Coord. EIW 0.00 Magn. Declination 27.480 Calculation Method MINIMUM CURVATURE Target Direction (OD) BuilcAWalk\DL per: 100ftl~ 30ml-'i lomEi Vert. Sec. Azim. 90.00 Magn. to Map Corr. 27.480 Map North to: OTHER SURVEY DATA Survey Survey Incl. Hole Course Total Coordinate Build Rate Walk Rate Date Tool Vertical Depth Angle Direction Length TVD Section N(+)'/S(-) E(+)-/w(-) DE Build (+) Right (+) Comment Type (F'I3 (DD) (DD) (IT) .~1 .... ~1 , (1~1~ iPer leo FT) Drop (-) Left (-) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TIE IN POINT 12-MAR-97 MWD 108.00 0.00 0.00 108.00 108.00 0.00 0.00 0.00 0.00 0.00 12-MAR-97 MWD 169.50 0.30 23.50 61.50 i69.50 0.06 0.15 0.06 0.49 0.49 9 1/2' M1C 1.2 DEG AKO 12-MAR-97 MWD 273.80 0.80 333.20 104.30 273.80 -0.16 1.05 .-0.16 0.62 0.48 12-MAR-97 MW~- 363.80 0.80 340.60 90.00 363.79 -0.65 2.20 -0.65 0.11 0.00 12-MAR-97 MWD 434.00 0.70 319.80 70.20 433.98 -1.09 2.99 -1.09 0.41 -0.14 ........ 12-MAR-97 MWD 533.70 0.70 305.80 99.70 533.67 -1.97 3.81 -1.97 0.17 0.00 i2-MAR-9~' MWD 625.70 0.70 297.70 92.00 625.67 -2.93 4.40 .2.93 0.11 0.00 13-MAR-97 MWD 715,40 0.70 315.10 89.70 715.36 -3.80 5.05 -3.80 0.24 0.00 13-MAR-97 MWD 806.40 0.70 295.90 91.00 806.35 -4.69 5.68 -4.69 0.26 0.00 . , 13-MAR-97 MWD 897.30 0.60 313.70 90.90 897.25 -5.54 6.25 -5.54 0.25 -0.11 ' 13-MAR-97 MWD 989.00 0.60 314.00 91.70 988.94 -6.23 6.92 -6.23 0.08 0.00 13-MAR-97 MWD 1081.00 0.40 277.50 92.00 1080.94 -6.89 7.30 -6.89 0.40 -0.22 , .,_ 13-MAP,-97 MWD 1174.40 0.20 293.00 93.40 1174.34 -7.37 7,40 -7.37 0.23 -0.21 13-MAR-97 MWD 126:~.~0 0.50 261.70 93.00 1267.34 -7.92 7.41 -7.92 0.37 0.32 13-MAR-97 MWD 1363.40 0.40 283.50 96.00 1363.33 -6.66 7,43 -8.66 0.20 -0.10 ~, 13-MAR-97 MWD 1462.80 0.40 267.00 99.40 1462.73 -9.34 7,49 -9.34 0.12 0.00 13-MAR-97 MWD 1563.80 0.20 255.90 101.00 1563.73 -9.86 7,43 -9.86 0.21 -0.20 13-MAR-97 MWD 1662.40 0.40 307.10 98.60 1662.:~3 -10.31 7.59 -10.31 0.32 0.20 13-MAR-97 MWD 1752.10 0.20 239.70 89.70 1752.03 -10.69 7.70 -10.69 0.41 -0.22-,~ ~:. ~ : '- ~'-'":~:~' .,-~ .T.,;, 13-MAR-97 MWD 1843.90 0.10 22.70 91.80 1843.83 -10.80 7,70 -10.80 0.31 -0.11 ~: ..-, i 3-MAR'97 MWD 1941.50 O.30 273.00 97.60 1941.42 -11.02 7.79 -11.02 0.36 0.20 13-MArl-97 MWD 2026.40 0.20 254.50 84.90 2026.32 -11.38 7,76 -11.38 0.15 -0.12 13-MAR-97 MWD 2126.90 0.30 225.30 100.50 2126.82 -1 i,74 7,53 -i 1.74 0.16 0.10 .--~ - i ii i · ~ll i · i. ii iii i ii ii i i SURVEY CALCULATION AND FIELD WORKSHEET JobNo. Sid ,ckNo. Page =' of 3 ' ' t Company ARCO ALASKA, INC. Rig Contractor & No. Doyon Drilling Inc. - Rig #141 Field EXPLORATION Well Name & No. TARN #4 Survey Section Name Definitive Survey BHI Rep. KIRT CHRISTENSEN WELL DATA Target TVD (FT) Target Coord. N/S Slot Coord. N/S 0.00 Grid Correction 0.000 Depths Measured From: RKB ~ MSL~ SS[-; Target Description Target Coord. E/W Slot Coord. E/W 0,00 Magn. Declination 27.480 Calculation Method MINIMUM CURVATURE Target Direction (DO) Buil~Walk\DL per:. lOOft~J 30m~ 10mD Veal. Sec. Azim. 90.00 Magn. to Map Corr. 27.480 Map North to: OTHER ................... Sd~V:i~Y I~ATA ........................... Sun/ay Sun/ay Incl. Hole Course Vertical Total Coordinate Build Rate Walk Rate Date Tool N(+) / S(-) E(+) /W(-) DE Build (+) Right (+) Comment Type Deplh Angle Direction Length TVD Section ...... (i=T) (OD) ([:)O) {FT) (FI) ,{FT) (F'q iPe, ~Oo ~ Drop (-) Left (-) __ 13-MAR-97 MWD 2155.10 0.20 296.80 28.20 2155.02 -11.84 7.50 -11.84 1.08 -0.35 ........... 1,5-MAR-97 MWD =38.60 0.30 260.40 83.50 2238.52 -t2.18 7.53 -t2.18 0.22 0.12 6 3/4' M1XL 1.2 DEG AKO - 15-MAR-g7 MWD 2432.00 0.10 271.80 193.40 2431.92 -12.85 7.45 -12.85 0.10 -0.10 15-MAR-g7 MWD 2525.80 1.10 112.90 93.80 2525.72 -12.10 7.10 -12,10 1.27 1.07 15-MAR-g7 MWD 2617.20 1.60 109.60 91.40 2617.09 ol 0.09 6.33 -10.09 0.55 0.55 15-MAR-97 MWD 2710.40 1.50 109.90 93.20 2710.26 -7.72 5.48 -7.72 0.11 -0.11 .... 15-MAR-g7 MWO 2805.00 1.40 113.g0 94.60 2804.83 -5.50 4.59 -5.50 0.15 -0.11 iS-MAR-g7 MWD 2896.70 1.:~0 113.00 91.70 2896.50 '3.52 3.73 -3.52 0.11 -0.11 16-MAR-97 MWD 2987.60 1.00 108.90 90.90 2987.38 -1.82 3.07 -1.82 0.34 -0.33 16-MAR-97 MWD 3082.30 0.90 105.20 94.70 3082.07 -0.32 2.61 -0.32 0.12 -0.11 16-MAR-g7 MWD 3173.70 0.80 121.20 91.40 3173.46 0.92 2.09 0.92 0.28 -0.11 16-MAR-97 MWD 3268.80 0.60 131.70 95.10 3268.55 1.86 1.41 1.86 0.25 -0.21 16-MAR-97 MWD 3363.10 0.50 112.30 94.30 3362.85 2.61 0.93 2.61 0.22 -0.11 16-MAR-97 MWD 3457.00 0.30 103.70 93.90 3456.74 3.23 0,71 3.23 0.22 -0.21 16-MAR-97 MWD 3550.10 0.20 101.40 93.10 3549.84 3.62 0.62 3.62 0.11 -0.11 16_MAR_97 MWD 3652.80 0.20 131.20 102.70 3652.54 3.93 0.47 3.93 0.10 0.00 16-MAR-97 MWD 3736.20 0.10 125.70 83.40 3735.94 4.10 0.33 4.10 0.12 -0.12 16-MAR-97 MWD 3832.10 0.20 322.00 95.90 3831.84 4.07 0.42 4.07 0.31 0.10 16-MAR-97 MWD 3927.10 0.20 306.70 95.00 3926.84 3.83 0.65 3.83 0.06 0.00 16-MAR-97 MWD 4025.90 0,10 289.70 98.80 4025.64 3.61 0.78 3,61 0.11 -0.10 16-MAR-97 MWD 4121.60 0.10 213.90 95.70 4121.34 3.49 0.74 3.49 0.13 0.00 16-MAR-97 MWD ~203.~0 ~).20 250.60 82.30 4203.64 3.31 0.~3 3.31 0.16 0.12 16-MAR-g7 MWD 4302.00 0.10 225.20 ~8.10 4301.74 3.09 0.51 3.09 0.12 -0.10 I ~6-MAR-97 MWD 4361.50 0.10 122.10 59.50 4361.2'~ 3.10 0.45 3.10 0.26 0.00 "' · SURVEY CALCULATION AND FIELD WORKSHEET Company ARCO ALASKA, INC. Rig Contractor & No. Do_~yon Drilling Inc. - Rig ,~141 Field EXPLORATION Well Name & No, TARN #4 Survey Section Name Definitive Survey BHI Rep. KIRT CHRISTENSEN WELL DATA Target TVD (~-rl Target Coord. N/S Slot Coord. N/S 0.00 Grid Correction 0.000 Depths Measured From: RKB ~ M~L~ SS~-~ Target Description Target Coord. E/W Slot Coord. F. JW 0.00 Magn. Declination 27.480 C~lculation Method MINIMUM CURVATURE Target Direction ~ Buil~Walk\DL per: 100ft~ 30m~ 10m~ Vert. Sec. Azim. 90.00 Magn. to Map Corr. 27.480 Map North to: OTHER _ , .......................... suRvEY DATA .......................... Survey Survey Incl. Hole Course Vertical Total Coordinate Build Rate Walk Rate Date Tool Depth Angle Direction Length I~/D Section N(+) / S(-)~ E(-t~)"/W(-) DL Build (+) Right (+) Comment Type ~ iDD) (DO~ iF'r) , IFT) ... ~1 (F'r) ~,~.!~o ~ Drop (-) Left (-) __ 16-MA R-97 MWD 4459.90 1.40 97.60 98.40 4459.63 4.36 0.24 4.36 1.33 ! .32 .... 16-MAR-97 MWD 4740.10 1.30 94.30 94.40 4739.76 10.73 -0.62 10.73 0.11 0.11 ...... 16-MAR-97 MWD 4827.20 ! .10 98.10 87.10 4826.84 12.54 -0.81 12.54 0.25 -0.23 ...... 17-MAR-97 MWD 5013.50 1.10 89.70 92.20 5013.10 16.09 -1.18 16.09 0.17 0.00 .. ....... 17-MAR-07 MWD 5207.60 0.80 82.60 102.30 5207.17 19.38 -1.1 3 19.38 0.24 -0.20 ..... 17-MAR-97 MWD 5295.70 0.80 83.00 88.10 5295.27 20.60 -0.98 20.60 0.01 0.50 17-MAR-97 MWD 5392.90 0.70 75.00 97.20 5392.46 21.84 -0.74 21.84 0.15 -0.10 19-MAR-97 MWD 5485.60 0.80 77.00 92.70 5485.15 23.02 -0.45 23.02 0.11 0.11 ....... 19.MAR.97 MWD 5763.20 0.50 40.20 94.90 5762.73 25.59 1.23 25.59 0.12 -0.11 19-MAR-97 MWD 5854.50 0.50 20.40 90.80 5853.53 25.98 1.90 25.98 0.19 0.50 ~ 19_MAR_97 MWD 5944.70 0.70 24.00 90.70 5944.22 26.35 2.78 26.35 0.22 0.22 ....... 19-MAR-97 MWD 6038.50 0.50 15.20 93.90 6038.12 26.71 3.78 26.71 0.15 -0.11 H 19-MAR-97 MWD 6076.30 0.60 358.50 37.70 6075.81 26.75 4.17 26.75 0.46 0.00 19-MAR-97 MWD 6150.00 0.60 358.50 73.70 6149.51 26.73 4.94 26.73 0.00 0.50 Projected Date, - NO SURVEY Date: 6/16/97 ARCO ALAStCA INC. WELL SUMMARY REPORT Page: 1 WELL: TARN 4 WELL ID: AX9710 TYPE: STATE: ALASKA AREA/CNTY: NORTH SLOPE WEST FIELD: UNLISTED SPUD: 03/12/97 START COMP: RIG:DOYON RIG 141 WI: 0% SECURITY:2 API NUMBER: 50-103-20249-00 BLOCK: FINAL: 03/11/97 (D1) TD: 108' (108) SUPV:WJP 03/12/97 (D2) TD: 760' (652) SUPV: WJP 03/13/97 (D3) TD: 2210' (1450) SUPV: WJP 03/14/97 (D4) TD: 2210'( SUPV:WJP 0) 03/15/97 (D5) TD: 2973' (763) SUPV: WJP 03/16/97 (D6) TD: 5124' (2151) SUPV: WJP 03/17/97 (D7) TD: 5459' (335) SUPV: WJP MW: 10.1 VISC: 66 PV/YP: 28/24 APIWL: 12.0 PREPARING TO SPUD Move from from Tarn #3A to Tarn #4. Rig accepted @ 2100 hrs. 3/11/97. MW: 10.1 VISC: 83 PV/YP: 31/32 APIWL: 10.0 DRILLING AT 1126' Function test diverter. Hold pre-spud meeting. Drill 12.25" hole from 28' to 304' using HWDP. Drill from 304' to 760'. MW: 10.5 VISC: 56 PV/YP: 24/20 RUNNING 9-5/8" CASING Drill 12.25" hole from 760' to 2210'. APIWL: 9.2 MW: 10.4 VISC: 46 PV/YP: 19/12 APIWL: 9.2 M/U 8.5" BHA Hold pre job safety meeting. Run 9-5/8" casing. Pump first and second stage cement. Test BOPE. MW: 9.5 VISC: 50 PV/YP: 10/25 APIWL: 12.6 DRILLING @ 3351' Test BOPE to 500/3000 psi. Drill/wash soft cement to stage cementer @ 1308'. Pressure test casing to 2000 psi for 10 min, drill out stage cementer, re-test casing to 2000 psi, OK. Drill cement stringers from 1800' to 1915', top of hard cement. Drill hard cement, baffle landing collar, more hard cement to float collar @ 2116'. Drill float collar, cement, float shoe and 20' of new hole. Perform shoe test to 740 psi, 16.0 ppg EMW. Drill 8.5" hole from 2220' to 2973'. MW: 9.5 VISC: 40 PV/YP: 13/13 M/U ROTARY BHA (TO LOCATE CORE Drill 8.5" hole from 2973' to 5124'. APIWL: 9.5 MW: 9.5 VISC: 40 PV/YP: 15/10 APIWL: 8.5 CORING @ 5480' (21' CUT SO FAR) Drill 8.5" hole from 5124' to 5215'. RIH with MWD and make MAD pass from 5142' to 5215'. Drill from 5215' to 5459'. CBU for samples. Drill 10' from 5449' to 5459'. Anchorage 03/18/97 (D8) TD: 6048' (589) SUPV: WJP MW: 9.5 VISC: 46 PV/YP: 15/21 APIWL: 8.0 DRILLING @ 6048' Core from 5459' to 5546'. Make MAD pass from 5440' to 5546' 03/19/97 (D9) TD: 6150' (102) SUPV: WJP MW: 9.5 VISC: 46 PV/YP: 14/21 APIWL: 7.8 HOLE CLEANOUT TRIP PRIOR TO RF Drill 8.5" hole from 5546' to 6150' TD. Pre jobs safety meeting. Run OH logging run ~1: GR/Dipole Sonic/SP/Density/Neutron/Microlog. Run OH logging run #2: Numar MRI. 03/20/97 (D10) TD: 6150' ( 0) SUPV: WJP 03/21/97 (Dll) TD: 6150' ( 0) SUPV: WJP 03/22/97 (D12) TD: 0' ( 0) SUPV: WJP MW: 0.0 VISC: 46 PV/YP: 0/ 0 APIWL: 0.0 PUMPING P&A PLUG #1 Finish running log run #2 - Numar MRI. Log run #3 - RFT. MW: 9.6 VISC: 45 PV/YP: 14/21 APIWL: 8.5 RIH TO TAG PLUG #2 Place abandonment plug #1 from 6150' TD to 4750' in three stages. Pump cement. RIH to tag hard cement at 4753'. Witnessed by John Spaulding, AOGCC. Place abandonment plug #2 from 2400' to 1995'. Pump cement. MW: 9.5 VISC: 40 PV/YP: 15/10 APIWL: 9.0 RIG RELEASED, MOVING TO TARN 2 RIH to tag hard cement at 2145'. Pump more cement. RIH to tag hard cement at 2005' With DP at 327', pump 10 bbls water, 16 bbls AS I cement and 4 bbl$ water. Pull 3 stands. Release rig @ 2400 hrs. 3/22/97. Cement to surface verified by AOGCC when final abandonment marker was installed. End of WellSummary for Well:AX9710 A O G C C ~£ r'~ d '¥ v -i d u ,~:i 'i W ~s. i 'i F' E R/'.'i Z 'T D A T A T D A T A ....? L U S 97 .... 02B rSOW RF'T ,,~/-... EPOCH , -. 97-'02S DZk SRVY /i08 .... 97 .... O'RB 7706 _ J~ND/CNT/D~$ 97 --02B CDR ~~ 150~-6 I 97 ..... 02S CN ~2187--.6126 'l 97 ~-025 DSS~E ~2 187-~-6126 '1 97 .... 0'2~ B'J~CROLOG ~187 .... 6126 i 97---025 CORE CHSP DESCRP ORE 1 I 0 ....... 4.07 ~.." C OH F' L.. E 'T Z C,i,.! D A T E ..~/',,,] A/9' 2/; 7/~.~/77 0 S//' 'i :::'/' 9 7 0 ~:~ / 2 0 ./" 9 '? 0 S / 02 / g 7 06/ i2/97 ~ /~1~ DA.'[LY WELL E)F'S ~, '..}/'11 ,/'~)/ T,D ?/,2,A/"r~.'?/ ~,' /'2... /~/?/" STATE OF ALASKA ALAS. ,-', OIL AND GAS CONSERVATION t. ,.;MMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1 Status of Well ' ' Classification of Servi% Well [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number ARCO Alaska Inc. 97-25 397-59 3. AddreSs 8. APl Number P. O. Box 100360, Anchorage, Alaska 99510 50-103-20249 4. Location ofwell at surface ,' ':-. ............. ~711~ 9. Unit or Lease Name 1120' FNL, 510' FWL, Sec. 1, TDN, R7E, U.M '"-,'.?-:::~?'i~i:,,'.~ i ~Jllll~ · Exploration sameAt top OfasPrOductiVeabove interval i~ .~//'~~,,,,~ ~_~ "' -~'~ !i-~~" 10. WelITarn4Number At total depth ; ~~D ! J'~ 11: Field and P~ol '" same as above 5. Elevation in feet (indicate KB,"'DF, etc.) 16. Lease Designation and Serial No. Exploration RKB 28', Pad 128'] ADL 375073, ALK 4297 12. Date Spudded i13. Date T.D. Reached i 14. Date Comp., Susp., or Aband.115. Water deptl~-'i~ offshore ]16. No. of Completions 3/12/97i 3/19/97 I 3/22/97 I N/A MSLI One 17. Total Depth (MD+TVD)! 18. Plug Back Depth (MD+TVD)I19. Directional survey[120~ Depth Where SSSV set~21. Thic~nes,s of Permafr~)~J 6150 6150 F~ F~ I~Yes i-lNG j N/A MD! 1650 (Approx.) 22. Type Electric or Other Logs Run 23. CASING, LINER AND CEMENTING RECORD CASING ' sE-Fi-INs DEPTH HOLE SIZE VVT. PER FT. GRADE ToP BO'FrOM SIZE CEMENTING RECORD AMOUNT PULLED 1 6" 62.5# H-40 Surf, 115' 24" 304 Sx AS I 1-9t6-2-5--~- ......... __4__0__.__0__#_ .................. ?_.8_.0_ .............. _S___U_¢_: ......... __2__! 9_5__'_.. ? 2:251'- !7_5__1 S_x__ C_!_a___ss G ...................................................................... Plug #i 4750' 6150' Plug #2 2005' 2400' Plug #3 i Surf. 327' ........ .. .. 24. Perforations open to Production (MD+TVD of Top and Bottom 25. TUBING RECORD and interval, size and number) S~ZE DEPTH SET (MD) PACKER SET (MD) MD TVD MD TVD .............................................................................................................................. 26. AC~D, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED ........ 27. PRODUCTION TEST ..... iDate First Production iMethod of Operation (Flowing, gas lift, etc.) Date of Test lHours Tested PRODUCTION FOR OIL-BBL GAS-MCF -WX~--B-B'~- ........ '-(:;'~-~-~'-~i~-~- ........ i'~'~:'Oi['-~'~:~i~)- ..................... TEST PERIOD ' 'F'[~-~--Tubir~ic~slr~I---PJ'-~-~-~-¢~CALCULATED · OIL-BBL GAS-MCF [WATER-BBL OIL GRAVITY-APl (CORR) Press. ! _~4-HoUR RATE ~8. GO'RE DAT,~ ' ' ' Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. dU{ Form 10-407 Rev. 07-01-80 Submit In Duplicate 29. Geologic Ma' 30. Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids recovered Marker Name Depth Depth and gravity, GOR, and time of each phase. I , , 31. List of Attachments Summary of Daily Drilling Reports, Surveys, Schematic 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed-~')~_ /2 ~ "~' /-~ ~ g' ~ ~,/4Z' ' - ~ 7 ~I ) Prepared By Name/Number: 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 Date: 6/16/97 ARCO ALASKA INC. WELL SUM14At{Y PdEPORT Page: 1 WELL:TARN 4 WELL ID: AX9710 TYPE: STATE:ALASKA AREA/CNTY: NORTH SLOPE WEST FIELD: UNLISTED SPUD:03/12/97 START COMP: RIG:DOYON RIG 141 WI: 0% SECURITY:2 API NUMBER: 50-103-20249-00 BLOCK: FINAL: 03/11/97 (D1) TD: 108' (108) SUPV: WJP 03/12/97 (D2) TD: 760' (652) SUPV: WJP 03/13/97 (D3) TD: 2210' (1450) SUPV: WJP 03/14/97 (D4) TD: 2210' ( SUPV: WJP 0) 03/15/97 (D5) TD: 2973' (763) SUPV: WJP 03/16/97 (D6) TD: 5124' (2151) SUPV: WJP 03/17/97 (D7) TD: 5459' (335) SUPV: WJP MW: 10.1 VISC: 66 PV/YP: 28/24 APIWL: 12.0 PREPARING TO SPUD Move from from Tarn #3A to Tarn %4. Rig accepted @ 2100 hrs. 3/11/97. MW: 10.1 VISC: 83 PV/YP: 31/32 APIWL: 10.0 DRILLING AT 1126' Function test diverter. Hold pre-spud meeting. Drill 12.25" hole from 28' to 304' using HWDP. Drill from 304' to 760' MW: 10.5 VISC: 56 PV/YP: 24/20 RUNNING 9-5/8" CASING Drill 12.25" hole from 760' to 2210'. APIWL: 9.2 MW: 10.4 VISC: 46 PV/YP: 19/12 APIWL: 9.2 M/U 8.5" BHA Hold pre job safety meeting. Run 9-5/8" casing. Pump first and second stage cement. Test BOPE. MW: 9.5 risc: 50 PV/YP: 10/25 APIWL: 12.6 DRILLING @ 3351' Test BOPE to 500/3000 psi. Drill/wash soft cement to stage cementer @ 1308'. Pressure test casing to 2000 psi for 10 min, drill out stage cementer, re-test casing to 2000 psi, OK. Drill cement stringers from 1800' to 1915', top of hard cement. Drill hard cement, baffle landing collar, more hard cement to float collar @ 2116'. Drill float collar, cement, float shoe and 20' of new hole. Perform shoe test to 740 psi, 16.0 ppg EMW. Drill 8.5" hole from 2220' to 2973' MW: 9.5 VISC: 40 PV/YP: 13/13 M/U ROTARY BHA (TO LOCATE CORE Drill 8.5" hole from 2973' to 5124' APIWL: 9.5 MW: 9.5 VISC: 40 PV/YP: 15/10 APIWL: 8.5 CORING @ 5480' (2t' CUT SO FAR) Drill 8.5" hole from 5124' to 5215'. RIH with MWD and make MAD pass from 5142' to 5215'. Drill from 5215' to 5459' CBU for samples. Drill 10' from 5449' to 5459' 03/18/97 (D8) TD: 6048' (589) SUPV: WJP MW: 9.5 VISC: 46 PV/YP: 15/21 APIWL: 8.0 DRILLING @ 6048' Core from 5459' to 5546'. Make MAD pass from 5440' to 5546'. 03/19/97 (D9) TD: 6150' (102) SUPV: WJP MW: 9.5 VISC: 46 PV/YP: 14/21 APIWL: 7.8 HOLE CLEANOUT TRIP PRIOR TO RF Drill 8.5" hole from 5546' to 6150' TD. Pre jobs safety meeting. Run OH logging run #1: GR/Dipole Sonic/SP/Density/Neutron/Microlog. Run OH logging run #2: Numar MRI. 03/20/97 (D10) TD: 6150' ( 0) SUPV: WJP MW: 0.0 VISC: 46 PV/¥P: 0/ 0 APIWL: 0.0 PUMPING P&A PLUG ~1 Finish running log rdn #2 - Numar MRI. Log run #3 - RFT. 03/21/97 (Dll) TD: 6150' ( 0) SUPV:WJP MW: 9.6 VISC: 45 PV/YP: 14/21 AP IWL: 8.5 RIH TO TAG PLUG #2 Place abandonment plug %l'fro~ 6150' T~ to 4750' in three stages. Pump cement, RIH to tag bard cement at 4753'. Witnessed by John Spaulding, AOGCC. Place abandonment plug #2 from 2400' to 1995'. Pump cement. 03/22/97 (D12) TD: 0'( 0) SUPV: WJP MW: 9.5 VISC: 40 PV/YP: 15/10 APIWL: 9.0 RIG RELEASED, MOVING TO TARN 2 RIH to tag hard cement at 2145'. Pump more cement. RIH to tag hard cement at 2005'. With DP at 327', pump 10 bbls \ water, 16 bbls AS I cement and 4 bbls water. Pull 3 stands.\ Release rig @ 2400 hrs. 3/22/97. Cement to surface verified by AOGCC when final abandonment marker was installed. End of WellSummary for Well:AX9710 Tarn #4 P&A SCHEMATIC Final 16" Conductor 115' RKB Cmt Plug #3 Gl. - 327' MI;). 12-1/4" Hole 9.5 ppg Mud between _plugs ~)-5/8" Surface Casing ¢ 2195' MD-RKB Cmt 2005'- 2400' MD- -~--- RKB ~),5 ooa Mud _ . - between pluas (2400'-4750') 8-1/2" to 9" Open Hole ('~ 6150' MD-RKB Cmt 4750'- 6150' MD- RKB BKD/jt 3-20-97 ARCO Alaska, Inc. Post Office Box 10036t, Anchorage, Alaska 99510-0360 Telephone 907 276 1215 June 17, 1997 Mr. David J. Johnston Commissioner State of Alaska Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Subject: Tam #4 (Permit No. 97-25/397-059) Well Completion Report Dear Mr. Commissioner: ARCO Alaska, Inc., as operator of the exploration well Tarn #4, submits the enclosed revised "Well Completion Report" (form 407). This revision involves more specific information for the actual P&A operations in the drilling summary. The Commission is requested to keep confidential the enclosed information due to the exploratory nature of the well. If you have any questions regarding this matter, contact me at 265-6206. Sincerely, ORIGINAL M. Zanghi Drilling Superintendent Kuparuk Development MZ/skad JlJ~,t '1 [3 1997 .Gas .Cons. E~ ARCO Exploration Company ~ ARCO Oil and Gas Company 4~ r~ ARCO Alaska, Inc. 4~ Record Of Shipment Of Confidential Information To: Attn.' Ms. Lori Talyor 3001 Porcupine Dr Anchorage Alaska 99501 District: Alaska From: ARCO Alaska, Inc. P. O. Box 100360 Anchorage, Alaska 99510-0360 Attn.: Kelli Thibodeau (907)265-6240 (X) Enclosed ( )Under separate cover ( )Via Reports Core Chip Descriptions as presented bY~ Arco Alaska Inc. ~'7 - ~ it Tarn 2 c-Core 1 5517 -55~, ~Core 2 5525'-5583.5' ~::;ore 3 5585'-5645' ¢t'~- o~.I Tarn 3 ~-Core 1 5216'-5306.9' (~'~ -o;~,¢Tarn 4 ~-'~Core 1 5459'-5546' Logs I Each Blueline & Reproducible Tarn 2 (Formation Log as Displayed by Epoch Tarn3 ~ormation Log as Displayed by Epoch q'~- 0 ;l& Tarn 3A Tarn 4 ,./Formation Log as Displayed by Epoch ~:lepeat Formation Tester- Pressures and Samples With Gamma Ray- Displayed by Schlumberger ~-F'ormation Log as Displayed by Epoch ,,.,~DR - Displayed by Schlumberger Note - Please verify a~nd/~cl~owledge receipt~ by signing and returning a copy of this transmittal. Signed b///~../( (.. ,i/"' ~ f(,:~~ I Date ~¢ ~ t/ /~ 6/11/97 Receive~'~v -~ -~ - - Remarks: Please Note that all included information is , ~ ARCO Exploration Company E~ ARCO Oil and Gas Company ~ ARCO Alaska, Inc.~, Record Of Shipment Of Confidential Information Digital Data f,llatform Express - Compensated eutron Lith°-Density Log - Displayed by Schlumberger ~. ~pole Shear Sonic Imager g w/SP - Displayed by Schlumberger -"~atform Express Microlog - Displayed by Schlumberger Tarn 4 ~.ADpen Hole Edit- Displayed by Schlumberger -~ '~? ~ C.- 1 paper List Report of Digital Data - Displayed by Schlumberger (../1"3.5" floppy diskette containing digital survey data for Tarn 2, 3, 3A, 4 - Displayed by Schlumberger Note - Please verify .-a~d a/c~kn¢wled~e receipt, by signing and return Signed by ////// ~'" '\/'.,//' /,./',, f,._ .L"./' ..., Received~~'- -/'~ '~~ - Remarks: Please Note that all included information is CONFIDENTIAL. in9 a copy of this transmittal. Date 6111/97 Date ARCO Alaskr, InC. '" ,,. _-~,ore Chip Description Operator and Well Nat'ne: Section of ARCO Alaska, Inc. TARN #4 Location: Date May 8, 1997 Core#: 1 5459'to 5546' I Recovered: 87.0' Depth Rec. Description Oil Oil Fluor Cut Cut Show ft. in. Stain O~b- % Intensit Color color fluor color sum __ Y 5462 Sandstone, It. grey, v.f grn qtz, good 90% brt yellow instant good feldspar and biotite, well sorted, sub strming ang., si. friable, sli calc. yellow/bi u mlky 5465 Sandstone, It. grey, v.f grn., qtz, sli 5 dull yellow sli yellow trace feldspar and biotite, v silty, poorly sorted, sub ang., si. friable, calc cemented, qtz. 5468 Sandstone, It. grey, v.f-f grn, qtz, good 70 brt yellow yellow/mi good feldspar and biotite, mod sorted, sub /gold ky ang, friable occ slty, sli calc. 5471 Sandstone, It. grey, v.f-f grn, qtz, good 90 brt yellow yell/mlky good feldspar and biotite, poorly sorted, / gold sub ang., friable, slty, sli calc. 5474 Sandstone, It. grey, v.f-f, occ med grn, good 100 brt yellow yell/talky good qtz, feldspar and biotite, mod sorted, /gold sub ang., friable, slty, sli calc. 5477 Sandstone, It. grey, v.f-f, qtz, good 80 brt yellow yell/mlky good feldspar, mica and biotite, mod /gold sorted, sub ang., friable, slty, sli calc. 5480 Shale, dk grey, hard, slty, micaceous, sli calc. 5482 Shale, dk grey, hard, sli slty, micaceous, sli calc. 5487 Sandstone, grey, hard, vf grn, v. slty, sli 20 dull yellow sli yellow poor sli. micaceous, sli calc. 5490 Shale, dk grey, hard, sli slty, micaceous, sli calc. Remarks All zones with porosity have oil shows. I Described by I J. Sallee AR3B-2389-B V~ ~o~CC r~, zO AAf~ 2~ 53? ARCO Alaska, Inc. ,'~ Core Chip Description Operator and ~Vell Name: Section of ARCO Alaska, Inc. TARN #4 2 I Location' Date May 8, 1997 Core #: 1 5459'to 5546' Recovered: 87.0' Depth Rec. Description Oil Oil Fluor Cut Cut Show ft. in. Stain Q:~ % IntensitColor color fluor color sum Y 5493 Sandstone, It. grey, v.f-f grn qtz, sli 5 dull yellow sli yellow trace feldspar and biotite, poorly sorted, sub ang- suub rnd., si. friable, calc cement. 5496 Sandstone, It. grey, v.f-f grn., qtz, good 70 brt yellow yell/mlky good feldspar and biotite, slty, poorly sorted, /gold sub ang., si. friable, calc cemented 5499 Sandstone, It. grey, v.f -f grn-occ med, good 80 brt yellow' yell/mlky good qtz, feldspar and biotite, mod sorted, /gold sub ang, friable occ slty, sli calc. 5502 Sandstone, It. grey, v.f-f grn,slty, qtz, good 60 brt yellow slow fair feldspar and biotite, poorly sorted, / gold yell/mlky sub ang., friable, slty, sli calc. 5505 Sandstone, It. grey, v.f-f, qtz, feldspar good 80 brt yellow yell/mlky good and biotite, poorly sorted, sub ang., /gold fdable, slty, sli calc. 5508 Sandstone, It. grey, v.f-f, qtz, light good 80 brt yellow yell/mlky good feldspar, mica and biotite, mod /gold sorted, sub ang, friable, slty, sli calc. 5511 Sandstone, It. grey, v.f -f grn, qtz, mod light good 90 brt yellow yell/mlky good slty, feldspar, mica and biotite, mod /gold sorted, sub ang, friable, sli calc. 5459 Sandstone, It. grey, f-m grn, qtz, light good 90 brt yellow yell/mlky good feldspar, mica and biotite, mod /gold sorted, sub ang-subrnd, friable, sli calc. Remarks All zones with porosity have oil shows. Described by J. Sallee AR3B-2389-B L. , ;)' ' ARCO Alaska, Inc. ,~; Core Chip Description Operator and Well N;me: Section of ARCO Alaska, Inc. TARN #4 1 I Location: Date May 8, 1997 Core #: 1 5459'to 5546' I Recovered: 87.0' Depth Rec. Description Oil Oil Fluor Cut Cut Show ft. in. Stain Oder % IntensitColor color fluor color sum Y 5516 Shale:,dk grey,hd, silty and micaceous slight 10% weak yellow instant with very tthin ss laminae, grey ,hd, gold mod v.fn gm- f grn and slty, micaceous, strming poor vis porosity, fair show in SS yellow/gr laminae, een mlky cut 5521 Shale, dk grey, hard, slty. .... 5524 Shale, dk grey, hard, mod slty. 5525 Shale, dk grey, hard, slty. 5530 Shale, dkgrey, hard, slty, micaceous, none none non none none e 5533 Shale, dkgrey, hard, slty, micaceous, none none non none none sli calc. e 5536 Shale, dk grey, hard, slty, micaceous, sli calc. 5540 Shale:,dkgrey,hd, silty and micaceous none none non none none with very tthin ss laminae, grey ,hd, e v.fn gm and slty, micaceous. 5543 Shale, dkgrey, hard, sli. slty, sli. none none non none none micaceous, sli calc. e -- 5546 Siltsone, grey, hard, arg, v. none none non none none micaceous, sli calc. e Remarks All zones with porosity have oil shows. Described by J. Sallee AR3B-2389-B E] ARCO Exploration Company J~ ARCO Oil and Gas Company r~ ARCO Alaska, Inc. Record Of Shipment Of Confidential Information To: Attn- Ms. Lori Talyor 3001 Porcupine Dr Anchorage Alaska 99501 District: Alaska From' ARCO Alaska, Inc. P. O. Box 100360 Anchorage, Alaska 99510-0360 Attn.: Kelli Thibodeau (907)265-6240 (X) Enclosed ( )Under separate cover ( )Via Reports Logs ~-l.Oll Tarn 2 - Borehole Seismic Report as displayed by Shclumberger Tarn 3 - Well Report as displayed by Epoch Tarn 4 - Well Report as displayed by Epoch _;arn 2- Geogram Synthetic Seismogram Datum 5"=1 sec "~ arn 2 Geogram Synthetic Seismogram Datum 20"=1 sec Note- Please verify and~ l~o/wle.dge receipt, by signing and returning a copy of this transmittal. Signed by /~/~t~/, ~////~v~J.4/,.~,f,..,~,.t...- Date 5/12/97 Remarks: Please Note thcit all included information is ~ONFIDENTIAL. ., '~/ ;V:."A: ~ 3 150' 200' 230' 300' 340' 375' 450' 500' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Sand/Grovel - clear, light to dark gray, black, reddish orange, light to dark green; translucent white; very fine upper to pebble fragments; predominately medium to coarse range; subangular to well rounded; poorly sorted; consists of quartz, chert, mafics, igneous/metalithics; scattered lignite; scattered wood fragments; scattered lumps of interstitial clay; non calcareous. Sand/Gravel - clear, light to dark gray, translucent white, black, reddish orange, moderate brown, light to dark green; very fine upper to pebble size grains; angular to well rounded; poorly sorted; quartz, chert, mafics, igneous/metalithics; scattered lignite and wood; good estimated visible porosity and permeability. Claystone - pale yellowish brown; very soft; appears as clay in samples; mushy, ninny, slightly sticky, fairly cohesive; dull, earthy luster; smooth to moderate grainy texture; non calcareous; silty; scattered very fine sand grains. Saint/Gravel - multi-colored, predominately white, black, and light to dark brown; fine lower to pebble fragments; angular to well rounded; poorly sorted; quartz, chert, igneous/metalithics; estimated good visible porosity and permeability. Coal - dusky brown to black; soft to slightly firm; small irregular cuttings with distinct edges; crumbly to moderately brittle; dull matte to slightly shiny luster; smooth to slightly grainy texture; lignite grade; occasionally lighter colored woody streaks; occasionally pale yellowish brown claystone laminations. Claystone - pale yellowish brown to light brown; very soft; runny to occasionally pasty; predominately appears as clay with few slightly firm lumps; slightly expansive with rehydration; silty in part; scattered to common very fine to coarse sand grains embedded in lumps; non to slightly calcareous. Sand/G~el - light to medium gray, clear to translucent white, medium to dark green, occasionally reddish orange; very fine upper to pebble fragments; angular to well rounded; poorly sorted; predominately coarse to granule size; occasional clay lumps; occasional wood fragments; scattered lignite; totally disaggregated; non to slightly calcareous; quartz, igneous/metalithics, chert; estimated good visible porosity and permeability; no oil indicators. Claystone - pale yellowish brown to occasionally light grayish brown; very soft; runny to occasionally pasty; predominately appears as clay with few slightly firm lumps; dull matte luster; smooth to moderate grainy texture; non to slightly calcareous; locally silty; scattered very fine to coarse sand grains embedded in lumps; occasional lignite fragments; occasional wood fragments; scattered free clear mica flakes. Sand/Gravel - clear, translucent white, light to dark gray, black, light to dark green; very fine upper to pebble fragment size range; predominately medium to very coarse; angular to well rounded; poorly sorted; quartz, chert, igneous/metalithics, scattered clear mica flakes; scattered wood fragments; scattered lignite; scattered to common clumps of interstitial clay; good estimated visual porosity and permeability; no oil indicators. 550' 570' 650' 760' 825' 940' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Sand/Gravel - translucent white, clear, light to dark gray, black, moderate to dark brown, light to dark grayish green, occasionally reddish orange; very fine upper to pebble fragment range; angular to well rounded; poorly sorted; quartz, chert, basalt, metalithics; scattered interstitial clay; estimated good visible porosity and permeability; no oil. Claystone - pale yellowish brown to light brownish gray; very soft; thick to runny; soupy to occasionally pasty; predominately appears as clay with scattered to common slightly film lumps; dull, matte luster; smooth to moderately grainy texture; non to slightly calcareous; locally silty, occasionally grades to siltstone; scattered to common very fine to coarse sand grains embedded in lumps; structureless. Sand/Gravel - clear; translucent white; light to dark gray; black; moderate to dark brown; light to dark green; very fine upper to pebble fragment size range; subangular to well rounded; poorly sorted; quartz, chert, feldspar, igneous/metalithics; scattered mica; trace mounts wood and lignite; scattered clots interstitial clay; estimated good visible porosity and permeability; no oil indicators. Sand/Grovel - clear, translucent white, light to dark gray, black, moderate brown; light to dark green; fine upper to pebble size grains; angular to subrounded; poorly sorted; unconsolidated and loose; poor sphericity; 40% quartz; 20% chert; 30% metalithic/igneous fragments; 10% dolomite, feldspar fragments; trace amounts of lignite; fairly clean matrix; good estimated visible porosity and permeability; no oil indicators present. Claystone - light brown to moderate yellowbrown; soft, gummy, chalky; slightly hydrophilic; earthy to matte luster; slightly secfile; predominately matrix material for sands and gravels; non calcareous. Catl~~ Shale - dusky brown to black; firm to very firm; predominately lignite; earthy to subresinous luster; hackly to irregular to subplaty fracture; abundant claystone interbeds. Claystone - light brown to moderate yellowbrown; soft; gummy; chalky; slightly hydrophilic; earthy to matte luster; appears as amorphous lumpy clumps; slightly sectile; predominately matrix material for sands and gravels with abundant carbonaceous interbeds; non calcareous. Coal - dusky brown to black; firm to slightly hard; brittle; grading from lignite to subbituminons; hackly to irregular fracture; earthy to subresinous luster; abundant claystone interbeds; trace interstitial pyrite. Claystone - light brown to moderate brown; soft; gummy; sticky; chalky; slightly hydrophilic; earthy to matte luster; appears as amorphous lumpy clumps, predominately matrix material for sands and gravels; slightly sectile; trace carbonaceous material throughout; non calcareous. Sand/Gravel - light to dark gray, clear, light to dark green, light to dark brown; clasts range from fine upper to pebble size; subangular to rounded; fair to good sphericity; moderately sorted; loose and disaggregate; grain supported with minor clay installation filling; 40% quartz; 30% metalithic/igneous fragments; 20% chert fragments; 10% feldspar; fair estimated visible porosity and permeability; no oil indicators present. 1050' 1090' 1150' 1200' 1250' 1300' 1400' 1485' 1550' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Sand - very light gray to dark gray; clear; light green to dark green; light brown to dark brown; black; clasts range from fine lower to pebble size; bit broken angular to subrounded; moderately sorted; fair sphericity; loose and disaggregate; grain supported with increasing claystone matrix; 40% quartz; 40% metalithic/igneous fragments; 20% chert and feldspar fragments; poor to fair estimated visible porosity and permeability; no oil indicators present. Claystone - light to moderate brown; soft; gummy; chalky; slightly hydrophilic; appears as amorphous lumpy clumps; earthy to matte luster; predominately matrix material for sands; slightly sectile; trace carbonaceous material; non calcareous. Sand/Grovel - light to dark gray, clear, light to dark green, light brown, black; clasts range from very fine upper to pebble size; bit broken angular to subrounded; moderately sorted; fairly sorted; loose and disaggregate; increase in claystone matrix filling with depth; fair estimated porosity and permeability no oil indicators present. Claystone - light brown to moderate brown; soft; gummy; sticky; slightly hydrophilic; earthy to matte luster; predominately matrix for sand; occasionally carbonaceous laminations; appears as amorphous lumpy clumps; non calcareous. Sand - very light gray to moderate gray to translucent to light green; clasts range from very fine upper to medium upper in size; subangular to subrounded; fair sphericity; fairly sorted; loose and disaggregate; predominately grain supported with minor clay installation filling; 50% quartz; 30% chert fragments; 20% metalithic/igneous fragments, feldspar; fair estimated porosity and permeability; no oil indicators present. Sand - very light gray to moderate gray to translucent to clear to light green; clasts range from fine lower to medium upper in size; subangular to subrounded; fair sphericity; moderately sorted; loose and disaggregate; predominately grain supported with occasional clay matrix filling; 40% quartz; 40% chert fragments; 20% feldspar, metalithic fragments; fair estimated porosity and permeability; no oil indicators present. Sand - very light gray to moderate gray to translucent to clear to light green; clasts range from fine upper to medium upper in size; subangular to subrounded; fair sphericity; moderately sorted; loose and disaggregate; grain supported with slightly increasing clay matrix material; 50% quartz; 30% chert fragments; 20% feldspar, metalithic fragments; fair estimated porosity and permeability; no oil indicators present. Claystone - light to medium brownish gray; very soft; thick; pasty; good cohesion; appears as clay with few slightly firm lumps; dull, matte luster; smooth to very grainy texture; non to slightly calcareous; abundant very fine to coarse sand grains embedded in lumps; locally silty, grades in part to siltstone; scattered carbonaceous specs; scattered e clusters microcrystalline pyrite. Sand - very light gray to moderate gray, occasionally light green; fine upper to medium upper size range; moderately sorted; subangular to subrounded; appears totally disaggregated in the sample; non to slightly calcareous; grain supported; 50% quartz, 30% chert, 20% feldspar, 10% igneous/meta lithics; fair estimated visible porosity and permeability; no oil indicators. 1580' 1600' 1650' 1680' 1700' 1740' 1780' 1800' 1925' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Claystone - light to meditun brownish gray; very soft; thick; pasty; good cohesion; sticky; dull matte luster; moderate to very grainy; slightly to moderately calcareous; common very fine to medium sand grains; locally silty; appears as clay with common slightly firm lumps; structureless. Sand - clear, translucent white, light gray; very fine lower to medium upper; subangular to subround; moderately sorted; 50% quartz, 30% chert, 20% igneous/meta lithics; variable grain/matrix support; slightly to moderately calcareous; pale yellowish brown clay matrix; estimated fair visible porosity and permeability; no oil indicators. Claystone - light to medium brownish gray; very soft; appears as clay in samples; scattered slightly firm mushy lumps; predominately thick, pasty, sticky, cohesive; slightly to moderately calcareous; common very fine to medium subangular to subround sand grains embedded in clay masses; scattered biotite; scattered shell fragments; scattered carbonaceous specks. Sand - clear, translucent white, light to medium gray, light to medium green; very fine lower to medium lower; subangular to subround; moderately sorted; 40% quartz, 30% chert, 30% igneous/metalithics and feldspar; scattered to common carbonaceous material; clay matrix; slightly to moderately calcareous; matrix supported; estimated poor visible porosity and permeability; no oil. Claymone - medium brownish gray; very soft; amorphous; thick, pasty, mushy, cohesive; predominately appears as clay with scattered slightly firm lumps; dull, matte, earthy luster; grainy texture; common silty zones; common very fine to medium sand grains; scattered to common carbonaceous specks; rare shell fragments. Sand - clear, translucent white, light to dark gray; very fine lower to fine upper; subangular to subround; well sorted; 50% quartz, 30% chert, 20% igneous/metalithics; silty; medium brownish gray clay matrix; slightly calcareous; matrix supported; estimated poor visible porosity and permeability; scattered carbonaceous matter. Sand - clear, white, light gray, black; very fine lower to fine lower; well sorted; subangular to subround; 60% quartz, 20% chert, 20% igneous/meta lithics; scattered biotite; scattered carbonaceous specks; locally very silty, grades in part to siltstone; argillaceous matrix; slightly to moderately calcareous; poor estimated visible porosity and permeability; no oil indicators. Clayatone - medium brownish gray; very soft; amorphous; appears as sticky, cohesive clay in samples; dull, matte luster; smooth to moderate grainy texture; non to slightly calcareous; locally silty, grading to siltstone; scattered to common very fine sand grains; scattered to common biotite; scattered to common carbonaceous specks; structureless; no oil indicators. Claysto~ - light to medium brownish gray; very soft; amorphous; consists of clay and slightly firm clay lumps in sample; sticky, cohesive, locally gritty; dull matte luster; smooth to common grainy; slightly expansive with hydration; poor to moderate solubility; locally silty, grading in part to siltstone; common to abundant very fine to fine sand grains; scattered to common carbonaceous specks. 1975' 2000' 2050' 2090' 2200' 2250' 2300' 2350' 2375' 2425' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Sand - white, clear, light to dark gray; very fine lower to fine lower; subangular to subround; well sorted; quartz, chert, igneous/metalithics; clay matrix; matrix support; slightly to moderately calcareous; poor estimated visible porosity and permeability; no oil. Claystone - light to medium brownish gray; very soft to soft; amorphous; thick, pasty, very sticky, cohesive; scattered slightly firm lumps; dull matte luster; smooth to moderate grainy texture; non to moderately calcareous; locally silty; scattered to very common very fine to fine sand grains; common carbonaceous specks; no oil. Claystone - light to medium brownish gray; very soft; appears as clay with few slightly firm lumps; mushy, sticky, pasty, very cohesive; poor to fair solubility in water; slightly expansive with rehydration; non to moderately calcareous; silty in part; scattered to common carbonaceous specks; scattered to very common very fine to fine sand grains; no oil indicators. Sand - clear, white, light to medium gray; clasts range from very fine lower to fine lower in grain size; subangular to subround; well sorted; silty; argillaceous; totally unconsolidated in sample; matrix support is inferred; 50% quartz, 20% chert, 30% igneous/metalithics; moderately calcareous; poor estimated visible porosity and permeability; no oil. Claystone - light to medium brownish gray; very soft; thick, sticky, very cohesive; pasty; amorphous; moderately soluble; slightly expansive with rehydration; non to slightly calcareous; locally silty; common very fine sand grains; common carbonaceous specks; no oil indicators. Claystone - medium light gray to medium gray; soft, non-indurated to slightly indurated, sticky, pasty, slightly gritty to moderately gritty texture, sandy, very fine to fine lower to med. lower quartz grains; silty to very silty grading to argillaceous siltstone; very slightly calcareous; occasionally very slightly, mineral fluorescence; no cut, no residual hydrocarbons, no oil indicators. Sandstone - white to very light gray, very fine to fine, individual grains subround to subangular; glauconitic, non-indurated. Claystone - medium light gray to medium gray with occasionally light brownish gray; very soft to occasionally slightly firm; very poorly indurated, runny to pasty consistency, hydrophilic, sticky, very good adhesion; very fine lower to fine upper quartz and lithic fragments; amorphous, grading to silty, sandy, non calcareous, scattered black carbonaceous material. Claystone - medium light gray to medium gray, occasionally light brownish gray to medium brownish gray; very soft to occasionally slightly firm; poorly indurated to occasionally slightly indurated; sticky, appearing as lumpy clay in samples, very good adhesion, very good cohesion. Claystone - medium gray to medium light gray; very soft to slightly firm; nonindurated to poorly indurated, hydrophilic, very fine lower to fine upper quartz and lithic fragments; amorphous grading to very silty and occasionally very sandy; non calcareous; scattered black carbonaceous material as individual grains and inclusions. 2500' 2550' 2600' 2630' 2675' 2720' 2750' 2800' 2850' 2900' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Sandstone - white to medium light gray, very fine to fine grained; mushy, silty, glauconitic; occasionally light medium brownish gray to light brownish gray, loosely consolidated; very friable; glauconitic, black carbonaceous specks with occasionally loose fine individual well rounded quartz crystals. Claystone - medium light gray to medium gray; soft, slightly indurated to occasionally indurated, sticky, pasty, mushy consistency; appears lumpy in samples; cuttings from flow line consistently plugging shaker screens, dissolved clays consistently adding volume, increasing viscosity of mud system. Claystone - light gray to medium gray, light medium brownish gray, occasionally very light brownish gray, non-indurated to slightly indurated, mushy, moderately sticky; good cohesion, amorphous; silty, occasionally friable; occasional fine to medium quartz grains, glauconitic, scattered to common carbonaceous specks. Claystone - light to medium brownish gray, with some slightly olive hues; soft; mushy to crumbly; occasional small irregular cuttings with rounded edges; dull matte luster, grainy texture; non calcareous, good cohesion and adhesion; silty, lumpy. Claystone - light gray to medium light gray; very light brownish gray to medium brownish gray; slightly indurated, becoming slightly firm; silty, sandy, moderately sticky, mushy consistency; occasional fine to medium quartz; scattered carbonaceous specs; non calcareous to very slightly calcareous Siltstone - very light gray to light brownish gray; fine grained, very poorly sorted; friable, poorly indurated, trace dull gold mineral fluorescence; no cut no visible oil indicators; interbedded fine to medium grain sandstone, quartz, glauconite, individual small black carbonaceous specks, some larger rounded carbonaceous, grains. Claystone - medium light gray to medium light brownish gray; very soft to occasionally soft; appears as soft lumpy clay in samples; good cohesion; mushy, sticky, occasional slightly firm lumps; dull earthy luster; smooth to slightly gritty texture, non calcareous. Ciaystone - light brownish gray to medium brownish gray; soft; gummy; sticky; appears as amorphous lumpy clumps; earthy to matte luster; slightly hydrophilic; good adhesion and cohesion; occasional slightly firm clumps; smooth to slightly gritty texture, becoming more gritty in siltstone layers; rare carbonaceous laminations; non calcareous Claystone - light brownish gray to medium brownish gray; soft; gununy; sticky; appears as amorphous lumpy clumps; earthy to matte luster; slightly hydrophilic; good adhesion and cohesion; smooth to slightly gritty texture, with grit increasing with depth, grading to siltstone; non calcareous. Claystone - very light brownish gray to medium brownish gray to light olive gray; soft and gummy; sticky; appears as amorphous lumpy clumps; earthy to matte luster; slightly to moderately hydrophilic; good adhesion and cohesion; slightly gritty texture, grading to siltstone; minor sandstone stringers throughout; non calcareous. 2950' 3050' 3075' 3150' 3230' 3270' 3300' 3340' 3400' 3520' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Claystone - very light brownish gray to medium brownish gray to light olive gray; soft and gummy; appears as amorphous lumpy clumps; earthy to matte luster; slightly to moderately hydrophilic; good adhesion and cohesion; slightly gritty texture, increasing with depth, grading to siltstone; non calcareous. Siltstone - light brownish gray to brownish gray; soft to slightly firm; appears as amorphous lumpy clumps; gummy; slightly hydrophilic; good adhesion and cohesion; very gritty, with minor very fine grained sand throughout; non calcareous. Siltstone - medium brownish gray to light brown; soft; gummy; sticky; appears as amorphous lumpy clumps; earthy to matte luster; slightly hydrophilic; good adhesion and cohesion; very gritty, with increasing sand stringers; non calcareous. Siltstone - medium brownish gray to medium brown; soft; gummy; sticky; appears as amorphous lumpy clumps with minor very fine grained sandstone chips; earthy to matte luster; slightly hydrophilic; good adhesion and cohesion; very gritty; non calcareous. Sandstone - very light gray to white to light olive gray; clasts range from very fine lower to fine upper in size; subangular to subrounded; moderately to well sorted; friable; grain supported with abundant clay installation filling; abundant silt sized particles; 50% quartz; 40% chert fragments; 10% glauconite and feldspar; poor estimated porosity and permeability; no oil indicators present. Sandstone - very light gray to very light brownish gray to white; clasts range from very fine upper to fine upper in size; subangular to subrounded; moderately to well sorted; poor sphericity; friable to loose; grain supported with abundant silty interbeds or matrix support; 50% quartz; 30% chert fragments; 20% glauconite and feldspar; poor estimated porosity and permeability; no oil indicators present. Siltstone - heavily interbedded with very fine grained sandstone; light brownish gray to medium brownish gray to light olive gray; soft to slightly firm; appears as amorphous lumpy clumps to subblocky balls to sandstone matrix material; earthy to matte luster; abundant dirty sandstone interbeds; fair adhesion and cohesion; non calcareous. Sandstone - very light gray to light brownish gray; clasts range from very fine upper to medium lower in size; subangular to subrounded; poor sphericity; moderately to well sorted; friable to loose individual grains; grain supported with abundant silty matrix; 50% quartz; 40% chert fragments; 10% glauconite and feldspar fragments; poor estimated porosity and permeability; no oil indicators present. Siltstone - light brownish gray to medium brownish gray; soft to slightly firm; appears amorphous lumpy clumps with some subblocky balls; earthy to matte luster; slightly hydrophilic; very gritty with sandstone interbeds decreasing with depth; forms matrix material for sandstone lenses; non calcareous. Sandstone - very light gray to light brownish gray to white, salt and pepper; light green; clasts range from very fine upper to medium lower in size; subround to subangular; poor sphericity; moderately to well sorted; friable to loose individual grains; 60% quartz; 30% chert fragments; 10% glauconite and feldspar; grain supported with abundant silty matrix; poor estimated porosity and permeability; no oil indicators present. 3650' 3700' 3750' 3850' 3900' 3950' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Siltstone - light brownish gray to medium brownish gray, salt and pepper light green; soft to slightly tim;appears as amorphous lumpy clumps to soft subblocky balls; occasional glauconite throughout; fair adhesion and cohesion; slightly hydrophilic; occasional very fine grained sandstone stringers; non calcareous. Siltstone - light brownish gray to medium brownish gray, salt and pepper light green; soft and gummy to slightly firm; appears as amorphous lumpy clumps to subblocky balls; earthy to matte luster; occasional glauconite, increase in sandy intervals; very gritty, grading to very fine grained dirty sandstone; fair adhesion and cohesion; slightly hydrophilic; non calcareous. Siltstone - light brownish gray to medium brownish gray to light olive gray, salt and pepper light green; soft and gununy; appears as amorphous lumpy clumps to subblocky balls; earthy to matte luster; occasional glauconite; very gritty, grading to very fine to fine grained dirty sandstone; fair adhesion and cohesion; slightly hydrophilic; non calcareous. Sandstone - very light gray to medium brownish gray to salt and pepper light green, decreasing with depth; clasts range from very fine lower to fine upper in size; subangular to subrounded; poor sphericity; moderately to well sorted; friable and loose; grain supported with abundant silty matrix; 60% quartz; 30% chert fragments; 10% glauconite and feldspar; poor estimated porosity and permeability; no oil indicators present. Siltstone - light brownish gray to medium brownish gray; soft and gummy to slightly firm; appears as amorphous lumpy clumps to subblocky balls; earthy to matte luster; very gritty, grading to dirty very fine grained sandstone; slightly hydrophilic; fair adhesion and cohesion; non calcareous. Siltstone - light brownish gray to medium brownish gray; soft and gummy to slightly firm; appears as amorphous clumps to sub-blocky balls; earthy to matte luster; very gritty, grading to dirty very fine grained sandstone; slightly hydrophilic; fair adhesion and cohesion; very calcareous; very slight slow streaming oil cut, dull to bright gold fluorescence, no mineral fluorescence. Claystone - medium dark brownish gray with some greenish hues; soft, mushy to crumbly; irregular and occasionally subblocky to subplaty cuttings; dull, matte luster; smooth to grainy texture; calcareous to very calcareous; silty, grading to and interbedded with siltstone; sandy; abundant black carbonaceous specks. Sandstone - white to light gray; medium light gray in part; very fine lower to fine upper; Lqubangular to subround; well sorted; cherty, silty; argillaceous; very calcareous; some well consolidated; trace oil cut, slow streaming, ~!i gold slight residual fluorescence, trace mica flakes; trace pyrite, and smooth pyritic inclusions in consolidated sandstone. Claystone - light medium gray to medium gray, grading to dark gray with depth; soft to slightly firm, sticky, good cohesion and adhesion; slightly pasty consistency, pliable; very gritty texture; very sandy; some individual loose calcite; medium lower to medium upper quartz; minor lithic fragments; numerous black carbonaceous specks, with inclusive carbonaceous material interbedded with argillaceous sands; silty throughout, trace mica, trace pyrite. 4050 ' 4100' 4150' 4250' 4350' 4450' 4500' 4525' 4575' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Siltstone - light gray to medium gray, light brownish gray to medium brownish gray; slightly soft to firm, friable; very gritty texture; dull to slightly sparkly luster; massive bedding, sandy to very sandy with very thin laminae; grading to silty sandstone; commonly moderately argillaceous, moderate glauconite; slightly calcareous. $iltstone - light medium gray to medium gray, light brownish gray to medium dark gray; soft to firm, sticky, good cohesion and adhesion; slightly pasty consistency, pliable, very gritty texture, very sandy; some individual calcite, medium lower to medium upper quartz, minor lithic fragments, numerous black carbonaceous materials; interbedded with argillaceous sandstone; silty, trace mica, trace pyrite; slightly calcareous. Claystone - medium gray to medium dark gray; slightly soft to moderately firm, fair to moderately well indurated; predominately blocky to subblocky with minor sub-platy cuttings habit; dull luster; smooth to grainy texture, gritty; slightly calcareous, locally silty, occasionally grading to siltstone; no oil indicators Claystone - medium gray to medium dark gray; very soft to soft, occasionally moderately firm; grading to shale in part; increasing calcite in samples <4%. Siltstone - light gray to light brownish gray, slightly soft to moderately firm, blocky to subplaty, gritty texture; dull to slightly sparkly luster; sandy to very sandy grading to silty sand; occasionally glauconite, moderately argillaceous, slightly calcareous; trace very dark gray to black paper shale, small, loose, individual pieces. Shale - medium gray to medium dark gray; slightly soft to moderately firm; fair to moderately well indurated, predominately subblocky to subplaty, with minor platy cuttings habit; uneven fracture, slightly brittle tenacity; smooth to slightly gritty texture, dull luster; massive bedding, occasionally sandy with isolated fine lower to fine upper quartz, abundant calcite <8%. Claystone - medium dark gray, very soft to soft; malleable occasionally sectile; slightly elastic; lumpy to pasty, tacky to slimy, cohesive; earthy fracture, amorphous habit; dull earthy luster; clayey texture, massive and structureless bedding; minor dark gray shale laminae; clays composed of 80% clay, 20% silt, moderately hydrophilic; trace calcite. Siltstone - very light gray to medium light gray; poorly indurated; crumbly to crunchy; mushy to tacky, occasionally stiff; subplanar to earthy fracture, subtabular to subplaty; occasionally subblocky habitat; dull to moderately earthy luster; silty to smooth texture, gradation beds with minor shaly silts composed of relative amounts of silt and clay. Claystone - medium light gray, very soft; lumpy, clumpy to clotted, mushy to pasty; tacky to slimy; cohesive, earthy fracture; amorphous habit; dull to moderate earthy luster; colloidal to clayey texture; composed of 50% clay, 50% silt; generally homogeneous. Claystone - medium light gray, very soft; lumpy, clumpy to clotted, mushy to pasty; tacky to slimy; cohesive, earthy fracture; amorphous cuttings habit; dull to moderate earthy texture. Claystone - medium light gray; very soft; lumpy, clumpy to clotted, mush to pasty; tacky to slimy, cohesive, earthy fracture; amorphous habit; dull to moderate earthy luster; colloidal to clayey texture; occasional scattered very fine grain sand. 4630' 4750' 4775' 4900' 4950' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Siltstone - very light gray; poorly indurated; brittle, crumbly to crunchy, slightly stiff; earthy fracture; subplaty to tabular; moderately earthy luster; silty to gritty texture; gradational beds of silt, shale and predominately clay. Sandstone - very light gray, occasionally pinkish gray; clastic size ranges from very fine lower to very fine upper; subangular to subround; moderate sphericity; poorly sorted, pitted to chipped texture; very weak siliceous cement; predominately silt and clay matrix support; composed of quartz and chert fragments; poor to fair estimated porosity and permeability, no oil indicators present. Sand - very light gray; clast size ranges from fine upper to fine lower occasionally very fine grained; subround, occasionally subangular; moderate sphericity; moderate sorting; polished texture; very weak silica cement; grain and silt packed matrix support; composed of approximately 30% quartz, 60% chert, 10% dark gray meta, and various lithic fragments; fair estimated porosity and permeability; trace calcite crystals; no oil indicators or properties. Siltstone - light brownish gray to medium brownish gray; soft to slightly firm; earthy to matte luster; slightly hydrophilic; appears as amorphous lumpy clumps; fair adhesion and cohesion; non calcareous. Claystone - very light gray to light gray; very soft, malleable to sectile; flexible to elastic; lumpy, clumpy to clotted; pasty, tacky to slimy; good cohesion and adhesion; earthy, amorphous cuttings; earthy, dull luster, occasionally sparkly, gritty to smooth colloidal texture, massive; occasional loose, very fine grain; subrounded, occasionally round to well-rounded, white to light gray individual sand grains; no oil indicators, no fluorescence. Ciaystone - medium light gray to light brownish gray; very soft to soft; becoming very hydrophilic; going into mud system; malleable, flexible to elastic, mushy to pasty, tacky to slimy; cohesive, adhesive; amorphous, dull to sparkly luster, very clayey; occasionally sandy; slightly calcareous; no oil indicators, no fluorescence. Sand - clear, white, milky white, very light gray, occasionally olive hues; subangular to rounded, predominately angular; poorly sorted to moderately sorted; very fine lower to very fine upper quartz; occasionally microcrystalline pyrite; glauconitic; loose individual glauconite; abundant black carbonaceous grains; scattered finely laminated humic or carbonaceous material bedded with milky white quartz; white to very light brownish gray; clay matrix. Claystone - light gray to medium brownish gray; very soft; runny; mushy; sticky; lumpy; appears as clay in samples; dull matte luster; smooth to moderately grainy texture; very calcareous; locally silty, grading to siltstone; scattered to common very fine sand grains embedded in lumps. 5050' Claystone - light brownish gray to medium brownish gray to light olive gray; very soft; gummy; sticky; tacky; appears as amorphous lumpy clumps; earthy to dull matte luster; smooth to occasional silty texture; moderately calcareous; minor very fine grained dirty sandstone lenses throughout. 10 5120' 5200' 5250' 5320' 5375' 5430' 5560' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Sandstone - white to very light gray to very light brownish gray, salt and pepper; clasts range from very fine lower to very fine upper in size; subangular to subrounded; fair sphericity; moderately to well sorted; friable to moderately consolidated; grain supported; with abundant clay and calcite matrix filling; 50% quartz; 40% chert fragments; 10% carbonaceous pieces, feldspar; poor estimated porosity and permeability; no oil indicators present. Sandstone - very light gray to white to salt and pepper; clasts range from very fine lower to fine lower in size; subangular to subrounded; poor sphericity; moderately to well sorted; friable to slightly consolidated; grain supported with abundant clay installation filling or minor calcite; 50% quartz; 40% chert fragments; 10% carbonaceous flakes, feldspar; poor estimated porosity and permeability; no oil indicators present. Shale - medium to dark brownish gray; slightly soft to firm; irregular tabular; blocky cuttings; dull matte luster; smooth to grainy texture, slightly calcareous in part, scattered to common carbonaceous specks; scattered to common very fine sand grains; gritty to silty; interbedded with siltstone; poor to fair fissility; no oil indicators. Siltstone - medium gray to dark brownish gray; soft to slightly firm, small irregular subblocky cuffings; crumbly to occasionally moderately tough; dull luster with common sparkles, gritty, abrasive texture; slightly to moderately calcareous, argillaceous grading to and interbedded with claystone and shale, scattered very fine sand grains; scattered to common carbonaceous specks and streaks. Shale - medium gray to dark gray; slightly firm to firm, irregular tabular, blocky cuttings; dull, matte luster, smooth to grainy texture; slightly calcareous, in part; scattered to common carbonaceous specks; scattered to common very friable sand grains, grading to silty, fissile. Sandstone - clear, white to very light gray; milky white; friable to firm, clastic sizes range fm very fine lower to fine upper in size; well sorted, subangular to rounded; composed of quartz, chert, igneous metalithics, glauconite, scattered biotite; clay matrix slightly calcareous; estimated poor visual porosity; 10-20% dull gold mineral fluorescence in ~mples, poor vi~'ble cut, sca_~ered vim'hie oil in ~mples; no petroleum odor, when dry, 40°/$ dull yellow fluorescence; immediale slow streaming yellow cut; bright ycllow residual ring cut Sandstone - very light gray to white to salt and pepper; clasts range from fine lower to medium upper, trace coarse lower; angular to occasionally subrounded; poor sphericity; well sorted; friable to loose; grain supported with occasional kaolinite; 50% quartz; 40% chert fragments; 10% carbonaceous flecks, feldspar; fair estimated porosity and permeability; 80°/$ bright yellow fluorescence; immediate streaming milky yellow cut; bright yellow residual ring cut Sandstone - white to very light gray; clasts range from fine lower to medium upper in size; angular to subrounded; poor sphericity; moderately sorted; moderately to well consolidated with abundant calcite matrix filling; grain supported; 60% quartz; 30% chert fragments; 10% mica, igneous fragments, feldspar; poor estimated porosity and permeability; no oil indicators present. 11 5580' 5675' 5750' 5785' 5850' 5890' 5980' 6030' 6100' ARCO ALASKA, INC. TARN NO. 4 LITHOLOGY SUMMARY Shale - light gray to moderate grayish brown; soft to slightly firm; subblocky to subplanar; earthy to dull matte luster; occasionally very gritty with abundant siltstone interbeds and minor sandy lenses throughout; trace carbonaceous flakes; slightly to moderately calcareous. Sandstone - very light gray to white to salt and pepper; clasts range from very fine upper to fine upper in size; angular to subrounded; poor sphericity; moderately sorted; friable to slightly consolidated; grain supported with abundant clay matrix filling; minor calcite throughout; 50% quartz; 30% chert fragments; 20% carbonaceous flakes, feldspar, chlorite; poor estimated porosity and permeability; no oil indicators present. Carbonaceous Shale/Shale - grayish brown to moderate brown; soft; crumbly; subplanar to subblocky; hackly fracture; abundant carbonaceous partings, increase with depth; earthy to subresinous luster; no oil indicators present. Sandstone - very light gray to white to salt and pepper; clasts range from very fine upper to fine upper in size; angular to subrounded; poor sphericity; moderately sorted; friable to moderately consolidated; grain supported with abundant kaolinite matrix along with some calcite; 50% quartz; 30% chert fragments; 20% carbonaceous flakes, feldspar, meta-igneous fragments; poor estimated porosity and permeability; no oil indicators present. Shale - moderate grayish brown to moderate brown to grayish brown; soft to slightly firm; subplanar to subfissile; slightly phyllitic; earthy to shiny luster; moderately carbonaceous; good adhesion and fair cohesion; slightly micaceous; slightly hydrophilic; slight calcareous. Sand_._~one - very light gray to very light brown to salt and pepper; clasts range from very fine upper to fine upper in size; subangular to subrounded; fair sphericity; moderately sorted; friable to slightly consolidated; grain supported with predominately clay installation filling and minor calcite; 60% quartz; 20% chert fragments; 20% glauconite, feldspar, igneous fragments; fair estimated porosity and permeability; 30- 50% yellow fluorescence; immediate streaming bright yellow cut; bright yellow residual ring cut Siltstone - light brown to moderate brown to moderate grayish brown; soft to slightly firm; subblocky to subfissile to subplanar; earthy to dull matte luster; fair adhesion and cohesion; slightly carbonaceous; trace glauconite; very gritty; grading to shale; slightly Shale - light gray to medium gray to brownish black; soft to slightly firm; subplanar to subfissile; earthy to shiny luster; fair adhesion and cohesion; slightly hydrophilic; slightly phyllific; shiny looking; moderately carbonaceous; slightly calcareous. Shale - medium grayish brown to brownish black; soft to slightly firm; subplanar to subfissile; earthy to shiny luster; fair adhesion and cohesion; slighty hydrophilic; slightly phyllitic; increasingly carbonaceous; slightly calcareous. 12 ARCO ALASKA, INC. TARN NO. 4 Section I-TgN-R7F_, UM Wildcat Norfh Slope, Aiosko Da~e ~)1-'o 5--or RECE!V~u Epoch Well Logging,/nc. ARCO ALASKA, INC. TARN NO. 4 Section 1-T9N-R7E, UM Wildcat North Slope, Alaska RECE~VbL~ MAY 1 3 1997 Oit & Gas Cons, ,¢...n~or~e Epoch Well Logging, Inc. TABLE OF CONTENTS 1. Well Resume 2. Daily Chronology 3. Daily Activity 4. Mud Record 5. Bit Record 6. Deviation Survey Record 7. Lithology 8. Morning Reports . 10. Formation Log - MD Drilling Dynamics Log WELL RESUME OPERATOR: WELL NAME: LOCATION: FIELD: COORDINATES: ELEVATIONS: COUNTY: STATE: APl INDEX: SPUD DATE: TOTAL DEPTH: COMPLETION DATE (T.D.): CONTRACTOR: RIG #: RIG TYPE: COMPANY GEOLOGISTS: DRILLING ENGINEER: COMPANY REPRESENTATIVE: MUD TYPES: HOLE SIZES: CASING DATA: MUDLOGGING SERVICES: TYPE UNIT: UNIT Ck. LOGGING GEOLOGISTS: SAMPLE TECHNICIANS: WELL STATUS: ARCO ALASKA, INC. TARN NO. 4 SEC. 1 , TgN R7E WILDCAT 1119' FNL, 509' FWL R.K.B. = 132' NORTH SLOPE BOROUGH ALASKA 50-103-20249 MARCH 12, 1997 6150' MARCH 19, 1997 DOYON DRILLING COMPANY #141 SCR DIESEL-ELECTRIC JIM SALEE RENEE HANNAN JAMES TRANTHAM BOBBY MORRISON BILL PENROSE WATER BASE TO 6150' 12 1/4" TO 2210'; 8 112" TO 6150' 9 518" TO 2195' EPOCH WELL LOGGING, INC. DML, RIGWATCH, RIGTRAK 6 JOHN MORRIS, PAUL STILES, LEES BROWNE TOM GENNINGS, DAVE DUHART P&A ~ARGO TARN NO. 4 ~RIG ACTIVITY 3/13/97 1003' 3114/97 2210' 3ti 5/97 2210' 3/16/97 3224' 3/17/97 5215' 3tl 8/97 5459' 3/19/97 5876' 3/20/97 6150' 3121/97 6150' NIPPLE UP BOPE. PICK UP 12 1/4" BHA. DRILL OUT CONDUCTOR, DRILL AHEAD WITH 12 1/4 HOLE FROM 108' TO 1003'. DRILL AHEAD FROM !003' TO 22!0'. MAKE WIPER TRIP AT 2210'. CIRCULATE BO,~-FOMS UP ~,ND TRIP OUT OF HOLE AT 2210' FOR BIT 2RR. TIME ON BIT 1RR WAS 14.1 HOURS. RUN AND CEMENT 9 5/8" CASING AT 2195'. NIPPLE DOWN AND NIPPLE UP BOPE. MAKE UP 8 !/2" BHA. TRIP IN HOLE AND DRILL OUT FLOAT EQUIPMENT AND CASING SHOE. DRILL AHEAD TO 2230' AND RUN FORMATION LEAK=OFF TEST. DRILL AHEAD WITH 8 1/2" HOLE TO 3224. MAKE WIPER TRIP AT 3224'. DRILL AHEAD FROM 3224' TO 422!'. MAKE WIPER TRIP AT 4221. WIPER TRIP MADE CLEAN. DRILL AHEAD FROM 4221' TO 5215'. POOH AT 5215' TO LAY DOWN MUDMOTOR. TRIP IN HOLE WITH BIT 3RR. DRILL AHEAD FROM 5215' TO 5459'. CIRCULATE OUT 1790 UNIT GAS SHOW WITH OIL. MAKE TRIP TO PICK UP CORE BARREL, TRIP IN HOLW WITH CORE BARREL. TAG BOq-I-OM AND PICK UP SUBS. CORE AHEAD FORM 5459' TO 5546'. TRIP OUT OF HOLE TO LAY DOWN CORE BARREL AND CORE. TRIP IN HOLE WITH BIT 5R5 AND DRILL AHEAD FROM 5546' TO 5876'. DRILL AHEAD FROM 5876' TO 6!50'. MAKE A WIPER TRIP. TRIP OUT OF HOLE FOR E-LOGS. RUN E-LOGS AT 6150'. TRIP IN HOLE TO CIRCULATE. CIRCULATE BO~FOMS UP. TRIP OUT OF HOLE. RUN RFT. WAIT ON ORDERS. PICK UP DRILL PIPE. TRIP IN HOLE TO CEMENT. P&A. ARCO TARN NO. 4 RIG ACTIVITIES 3/12/97 3/13/97 3/'14/97 3/1§f97 3/t 6/97 3t17t97 3/18/97 3/19/97 RU/RD RIG 4.50 DRILLING 12.50 19.50 12.00 21.00 7.00 6.50 REAM 2.50 CORING 9.00 CIRCULATING 2.50 3.00 0.50 1.00 2.50 1.50 2.00 TRIP 1.50 3.00 3.50 2.00 13.50 11.00 4.00 RIG SERVICE 0.50 0.50 1.00 RIG REPAIRS CUT & SLiP SURVEY 2.50 WIRE LINE LOG~ 8.50 RIJN CA~ING 5.00 CEMENT C~G 5.00 RU/RD EQUIPMENT TEST LINE~ 1.00 3.50 NU/ND BOP/DIVERTER 4.50 7.00 0.50 TEST CSG 2.00 LEAK OFF TEST 1.5O PLUG BACK PRE-SPUD PRB_EFS PRB_,AJNK MI$C CLEAN OUT 3,00 WIRER TRIP iT. OTAL 24.0_..._~0 24.0._.....~0 24.00 24.00 24.00 24.0.___q0 24.00 24.00 MUD TYPE: WATER BA~.D DATE DEPTH IMUD WT lb/gal FUNNEL V~ IPLAST~C VI~ slqt cps YP/R3 I bl~ 00ft2/d eg ~0s~0m GEL lb/100ft2 APl F LO~8 ccl30 m i n INTHP F LO~ cc/30 min I % vol I I ~L,'WATER % vol 18~ID % vol MBT Ibibbl I P~ MUD (PM) Cl4.0RIDE$ mgll HARDNESS Ca mg/I LO, GRAY, SOL ppb ARCO TARN NO. 4 MUD DATA ' ARCO TARN NO. 4 i I_., I BIT # SIZE I ,IViFR TYPE ! SERIAL # JETS/TFA DEPTH IN DEPTH OUT FTG HRS DULL/GRADE IEI 12.25" STC MA1SL LH7950 1×10,2X15 108' 2208' 2100' 14.1 INC 2RI 8.5" HYCA DS70FGV 19095 6X11 2208' 5215' 3007' 14.42 3-2-X-1/16 3RI 8.5" HTC AT J05 B85XR 3X13 5215' 5459' 244' 5.2 1-1-E-I CORE 1 8.5" HYCA ARC412C-3 1901130 .77 TFA 5459' 5546' 87' 4.74 INC 5R5 8.5" HYCA DS70 FGV 19095 6X11 5546' 6150' 604' 3.84 INC ARCO ALASKA, INC. TARN NO. 4 SURVEY DATA iMEASURED II~:TERVALVERTICAL IVERTICAL ISTATION~I/"'~ZIMUTH LATITUDE DEPARTURE DISPLACED at f-C..IMUTH DLS DEPTH DEPTH SECTIONI ,NCLN.I N/-S E/-W deg/ ff fi: ft ff deg deg, ff ft ft deg 100ff I 108.00 0.00 106.00 0.00 0.00 0.001 O.OOi 0.00! 0.00 0.00! 0.00 170.00 61.50 169.50 0.06 0.29 23.501 0.14 0.06 0.16 23.501 0.47 273.80 104.30 273.80 -0.t5 0.78 333.20~ 1.02 -0.15 1.03 351.47 0.61 363.801 90.00 363.79 -0.63 0.78 340.60 2.14 -0.63 2.23 343.56 0.11 434.401 70.60 434.38 -1.07 0.69 319.80 2.92 -1.07 3.11 339.94 0.3~) 533.70 99.30 533.67 -1.97 0.73 305.80 3.75 -1.97 4.23 332.33 0.18 i 625.70 92.00I 625.67-2.90 0.65 297.70 4.33 -2.90 5.22326.180.14 715.40 89.70 715.36 -3.72 0.67 315.10 4.94 -3.72 6.19 323.00 0.22 806,40 91.00 816.36 -4.58 0,67 295.90 5.55 -4,58 7,19 320.49 0.25' 897.30 90.90 897.25 -5.38 0.57 313.70 6.09 -5.38 8.13 318.55 0.24! 989.00 91,70 988,94 -6,09 0,65 314.00 6,77 -6,09 9.10 318.05 0.09 1081.00 92.00 1080,94 -6.81 0.44 277.60 7.18 -6.81 9.90 316.51 0.43 1174.40 93.40 1t74.34 -7.35 0.24 293.00 7,30 -7.35 10.36 314.83 0.23 1267.40 93.00 1267.34 -7.93 0.50 261.70 7,32 -7.93 10.79 312.72 0.34 1363.40 96.00 1363.33 -8.7i 0.45 283.50 7.35 -8.71 11.40 310.16 0.19 1462.80 99.40 1462.73' -9.44 0.41 267.00 7.42 -9.44 12.01 308.16 0.13 1563.90 101.10 1563.83 -10.03 0.26 255.90: 7.35 -10.03 12.43 306.23 0.16 1662.40' 98.50 1662.33 -10.51 0.38 307.10 7.49 -10.51 12.90; 305.49 0.30 1752.101 89.70 1752.03 -10.85 0.16 239.70 7.61 -10.85 13.25 305.03 0.39 i843.90 91.80 1843.83 -10.92 0.12 22.70 7.63 -10.92 13.32 304.93 0.29 1941.50 97.60 i941.43 -11.11 0.26 273.001 7,74 :11.11 13.53 304.86 0.33 2026.40 84.90 2026.33 -11.4i 0.15 254.50 7,72: -11.41 13.77 304.081 0.15 J 2126,90 100.50 2126.83 -11.74 0.33 225.30 7.48: -11.74 13.92 302.501 0.21 2155,10 28.20 2t55.03 -11.85 0.23 296.80 7.45 -11.85 13.99 302.15 1.20 2238.60 83.501 ""'"°° :'-' ,,-,,-oo.u/_ -12.23 0.32 260.40 7.48 -12.23 14.33 301.47 0.23 2432.00. 193,40 2431,92 -12.96 0.!2 271,80 7,40 -12,96 14.92 299.72 0,10 2525,801 93.80 2525.72 -12.21 !.!21 112.90 7.05 -12.21 14.10 299.98 1.31 I 2617.20 91.40 2617,09 -!0.i7 1.63 109.60 6.26 -10.17 11.94 301.63 0.56 2710,40 93.20 2710.26 -7.74 1.54 109.90 5.39 -7.74 9.43 304.85 0.09 2805,00 94.60 2804.82 -5.47 1.42 113.90 4.48 -5.47 7.08 309.32 0.17 2896,70 91.70 2896.50 -3.50 1.27 113.00 3.63 -3.50 5.04 316.02 0.17 2987,70 91.001 2987.48 -1.80 1.02 108.90 2.97 -1.80 3.47 328.71 0.29 3082.30 94.601 3082.07 -0.27 0.93 105.20 2.50 -0.27 2.51 353.89 0.11 3173,70: 91.40 3173.46 0.97 0.77 121.201 1.98 0.97 2.21 26.16 0.31 3268,80 95.10 3268.55 1.88 0,58 131.70 1.33 1.88 2.30 54.69 0.24 3363,10 94.30 3362,85 2.62 0,51 112.30 0,85 2,62 2.76 71,86 0.21 3457.00i 93.90 3456.74 3.21 0.25 103.70 0.65 3.21 3.27 78.59 0.28 3550,10 93.10 3549.84 3.53 0.15 101.40i 0.58 3,53 3.57 80.73 0.11 3736,20 3.961 0.09 i25.70 0.30 3.96 3.97: 83.40 3735.94 85.71 0.13 3832,10 95.90 3831.84 3.92 0.19 322.00 0.38 3.92 3.94 84.49 0.29 3927.10 95.00 3926.84 3.68 0.21 306.70 0.61 3.68 3.73 80.65 0.05 4025,90 98.80: 4025.64 3.46! 0.09 289.70 0.74 3.46 3.54 77.94 0.13 4121,60 95.70: 4121.34 3.34 0.12 213.90 0.68 3.34 3.41 78.44: 0.14 4203.90 82.30 4203.64 3.13 0.23; 250.60 0.56 3.131 3.18 79.94 0.18 ALASKA, I[ TARN NO. 3 SURVfiY DATA I MEASURED INTERVAL VERTICAL VERTICAL STATION A, ZIMUTH LATITUDE DEPARTURE DISPLACED at AZIMUTH DLS DEPTH DEPTH SECTIONi INCLN. N!-S E/-W deg/ ff ff ff ff deg deg ff ft ft deg lOOft 4302.00 98.10 4301.74 2,89 0.09 225.20 0.44 2.89 2.93 81.42 0.16 4361.90 59.90 436!.64 2.91 0.12 122.00 0.37 2.91 2.94 82.76 0.28 4459.90 98.00 4459.63 4.i9 1.40 97.60 0.16 4.19 4.19 87.85 1.32 4645.70~ 94.50 4645.38 8.55 1.24 95.30 -0.53 8.55 8.57 93.56 0.23 4740.10 94.40 4739.75 10.66 1.331 94.30 -0.71 10.66 10.69 93.80 0.09 4827.20 87.10 4826.83 12.48 1.08 98.10 -0.90 12.48 12.52 94.13 0.30 4921.30 94.10 4920.92: 14.26 1.10 97.90 -1.15 14.26 14.30 94.61 0.03 5013.40 92.10 5013.00: 16.01 1,09 89.70 -1.27 16.01 16.06 94.52 0.17 5105.30 91.90 5104.88 17.72 1,04 91.70 -1.29 17.72 17.76 94.15 0.06 5207.60 102.30 5207.17 19.33 0.78 82.60 -1.22 19,33 19.37 93.62 0.29 5295.70 88.10 5295.26~ 20.54 0.80 83.00 -1,07 20,54 20.57 92.99 0.18 5485.60 92.70 5485.15 22.89 0.79 77.00 -0.56 22.89 22.90 91.41 0.14 5577.60 92.00 5577.14 23.99 0.69 60.90 -0.15 23.99 23.99 90.36 0.25 5668,30 90.70~ 5667.83 24.80 0.57 46.10 0.43 24.80 24.80~ 89.01 0.22 5763.20 94.90i 5762.73 25.43 0.55 40.20 1.i0 25.43 25.45 87.52 0.07 5854.00 90.80 5853.53 25.86 0.55 20.40 1.84 25.86 25.93 85.92 0.21 5944.70 90.70 5944.22 26.23 0.67 24.00 2.74 26.23 26.37: 84.04 0.14 6038.60 93.90 6038.12 26.58 0.57 15.20 3.69 26.58 26.83 82.10 0.15 6076.30 37.70 6075.81 26.62 0.63 358.5 4.08 26.62 26.93 81.29 0.5 THE FINAL SURVEY' IS PROJECTED TO TOTAL DEPTH 6150.00 73.70 6i49.51l 26.601 0.631 358.51 4.891 26.60 27.04 79.59 0 ARCO ALASKA tNC DATE: 3114197 04:00AM DEPTH: 22t0 Casing to Date: NONE Yesterday: t 003 Mud wt. 10.6 EPOCH WELL LOGGING MORNING REPORT REPORT FOR: 24 Hour Progress: Viscosity: 85 TARN BILL PENROSE BIT iNFORMATION: No. Size Type 1 RI 12.25" STC MA1SL Serial No. Jets Interval Footage LH7950 1X10, 2X15 108'-2210' 2102' Hours 14.1 Condition DRILLING PARAMETERS: High Low Rate of Penetration 969 at 1498' 18 at 1975' Surface Torque 171 at 1573' 72 at 1501' Weight on Bit 38 at 2190' 2 at 1521' Bit RPM 211 at 1714' 158 at 2151' Pump Pressure 2087 at 1997' 1583 at 2182 Average 236 142 25 175 1846 fi/hr psi Klbs RPM psi GAS SUMMARY: High Low Total Ditch Gas Out: ~ at 2128' 13 at 2057' Methane (C-1) 19230 at 2128' 2520 at 2057' Ethane (C-2) at at Propane (C-3) at at Butane (C-4) at at Pentane (C-5) at at Total Cuttings Gas: at at Background Gas: ~ units W~oer Gas: Connection Gas: units average units max. 0 Trip Gas: 100 Average 36 units 7196 ppm ppm ppm ppm ppm units units @ 2210' units @ HYDROCARBON SHOWS: LITHOLOGY: CLAYSTONE, SAND, AND GRAVEL WITH OCC CARBONACEOUS SHALE AND COAL DAILY ACTIVITY SUMMARY: DRILL AHEAD TO 1003', MAKE WIPER TRIP, TRIP OUT OF HOLE. Epoch Personnel on site: 4 Epoch Day Rate: $1,960 ARCO ALASKA INC DATE: 3/t5/97 04:00AM DEPTH: 2208 Casing to Date: NONE Yesterday: Mud wt. EPOCH WELL LOGGING MORNING REPORT 2208 10.5 TARN REPORT FOR: BILL PENROSE 24 Hour Progress: ~ Viscosity: 83 BIT INFORMATION: No. Size Type Serial No. 3RI 8.5" HYCA DSTOFGV 19095 Jets Interval Footage Hours Condition 6X11 2208'~ DRILLING PARAMETERS: High Low Average Rate of Penetration 969 at 1498' 18 at 1975' 236 fi/hr Surface Torque 171 at 1573' 72 at 1501' 142 psi Weight on Bit 38 at 2190' 2 at 1521' 25 Klbs Bit RPM 211 at 1714' 158 at 2151' 175 RPM Pump Pressure 2087 at 1997' 1583 a[ 2182 1846 psi GAS SUMMARY: High Low Average Total Ditch Gas Out: ~ 96 ] at 2128' 13 at 2057' 36 units Methane (C,-1) 19230 at 2128' 2520 at 2057' 7196 ppm Ethane (C-2) at at ppm Propane (C-3) at at ppm Butane (C-4) at at ppm Pentane (C-5) at at ppm Total Cuttings Gas: at at units Background Gas: ~ units W~per Gas: 51 units @ 2210' Connection Gas: units average units max. 0 Trip Gas: units @ HYDROCARBON SHOWS: LITHOLOGY: CLAYSTONE, SAND, AND GRAVEL WITH OCC CARBONACEOUS SHALE AND COAL DAILY ACTIVITY SUMMARY: RUN 9 5~8" CASING. CIRC AND CONDITION MUD,. CEMENT CASING. NIPPLE DOWN AND NIPPLE UF Epoch Personnel on site: 4 Epoch Day Rate: $1,960 ARCO ALASKA INC DATE: 3116t97 04:00AM DEPTH: 3224 Casing to Date: 9 5/8" @ 2195' Yesterday: Mud wt. EPOCH WELL LOGGING MORNING REPORT 2208 9.6 REPORT FOR: 24 Hour Progress: Viscosity: TARN BILL PENROSE 45 BIT INFORMATION: No. Size Type Serial No. 2RI 8.5" HYCA DSTOFGV 19095 Jets 6X11 Inte~al 2208'- Footage Hours Condition DRILLING PARAMETERS: High Rate of Penetration 452 at 2977' Surface Torque 157 at 2210' Weight on Bit 33 at 2210' Bit RPM 269 at 3106' Pump Pressure 2343 at 3102' 47 0 0 174 1375 Low at at at at at 3131' 2395' 3220' 2230' 2211' Average 23O 96 5 231 2042 ?b/hr psi Klbs RPM psi GAS SUMMARY: High Total Ditch Gas Out: ~ at Methane (C-1) 23350 at Ethane (C-2) 52 at Propane (C-3) at Butane (C-4) at Pentane (C-5) at Total Cuttings Gas: at Background Gas: I 5 I units Connection Gas: 8 units average 2347' 2347' 3089' 38 units max. 1 229 0 Low at at at at at at at Wiper Gas: 0 Trip Gas: 3218' 3112' 3220' 43 Average 25 units 4940 ppm 3 ppm ppm ppm ppm units units @ 3224' units @ HYDROCARBON SHOWS: LITHOLOGY: CLAYSTONE, SILTSTONE, SAND DAILY ACTIVITY SUMIVIARY: MAKE UP BHA, TRIP IN HOLE, DRILL OUT FLOAT EQUIPMENT AND CASING SHOE, DRILL AHEAD TO 2230'. RUN FORMATION LEAK-OFF TEST. DRILL AHEAD TO 3224'. MAKE WIPER TRIP. Epoch Personnel on site: 4 Epoch Day Rate: $1,960 ARCO Alaska, Inc. Post Office Box 100360 Anchorage, Alaska 99510-0360 Telephone 907 276 1215 April 30, 1997 Mr. David J. Johnston Commissioner State of Alaska Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 RECEJV. E.D 199 7 Subject: Tarn #4 (Permit No. 97-25/397-059) Well Completion Report Dear Mr. Commissioner: ARCO Alaska, Inc., as operator of the exploration well Tarn #4, submits the enclosed revised "Well Completion Report" (form 407). The revision involves more specific information for the abandonment plugs with associated depths. We have also included a schematic. The Commission is requested to keep confidential the enclosed information due to the exploratory nature of the well. If you have any questions regarding this matter, contact me at 265-6206. Sincerely, Drilling Supervisor Kuparuk Development MZ/skad STATE OF ALASKA ALASK,-, OIL AND GAS CONSERVATION Ct....IMISSION 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 ARCO Alaska Inc. 97-25 397-59 3. , Address P. Q. Box 100360, Anchorage, Alaska 99510 Location of well at surface 1120' FNL, 510' FWL, Sec. 1, T9N, R7E, UM At top of productive interval same as above At total depth same as above 8. APl Number 50-103-20249 9. Unit or Lease Name Exploration 10. Well Number Tarn 4 11. Field and Pool Elevation in feet (indicate KB, DF, etc.) ~6. Lease D~ig'nation and Serial No. Exploration RKB 28', Pad 128' ~ ADL 375073, ALK 4297 2. Date Spudded3/12/97 ii13' Date T'D' Reached 114' Date O°mp" Susp" °r Aband'115' Water depth' if °fish°re 116' N°' °f C°mpleti°ns3/19/97 3/22/97 N/A MSLI One 17. Total Depth (MD+TVD)118. Plug Back Depth (MD+TV_D)I19. Directional Surveyi20. Depth where SSSV set~21. Thickness of Permafrosl 6150 6150 FT~ ~-T~ []Yes I~No I N/A MD/ 1650' (Approx.) 22. Type Electric or Other Logs Run 23. CASING SIZE WT. PER FT. GRADE 16" 62.5# H-40 Surf. 9.625" 40.0# L-80 Surf. Plug #1 4750' Plug #2 2005' Plug #3 Surf, CASING, LINER AND CEMENTING RECORD __S___EZT_,NG____D__E_~__H ...... _~ H~LE' ToP BO'FrOM ] S_!ZE 115' I 24" 304SxASI 2195' j._.1___2:_.2__5_'_'__ 751 Sx Class e 6150'I __ 2400' 24. Perforations open to Production (MD+TVD of Top and Bottom and interval, size and number) MD TVD MD TVD 27. PRODU~ Date First Production CEMENTING RECORD AMOUNT PULLED 25. TUBING RECORD SIZE DEPTH SET (MD) PACKER SET (MD) 26. ACID. FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED ;TION TEST iMethod of Operation (Flowing, gas lift, etc.) Date of Test iHours Tested Flow TubingiCasing Pressure Press. i 28. PR~)DUCTION FOR IOIL-BBL TEST PERIOD' ~-~L'E6~7,~B--7 ~4-HouR ~^TE GAS-MCF GAs-MCF CORE DATA WATER-DEL WATER-DEL tCHOKE SIZE JGAs-OIL RATIO I ~i~ ~-~A-~[~-APi (~F[) Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. 0il & Gas Co_pS._c,.mm? Form 10-407 Rev. 07-01-80 ~lCJi'0.ragl] Submit In Duplicate 29. Geologic Ms '-. 30. Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids recovered Marker Name Depth Depth and gravity, GOR, and time of each phase. i3ii LiSt of Attachments ......... Summary of Daily Dri!?~_g Reports, Surveys, Schematic -:~:--J--h'~-~-I~,--~-ertif~--~-~i~-~-h-~lf~--~i-~g ~--~:~e-~-~ (~-~-'~:t--~-(~-:t-i~-~-~-;i- ~(~-~ -I~-(~wl-~l-~-e ........................................... ---~-----~,~- .............. Signed {~[.//( ~:_ ¢',~( ....................... __T_!_t!e ...... _~_____ ~ ~'___r Date "(.////2 ~' Prepared By Name/Number: 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 Date: 4/21/97 ARCO ALAStCA INC. WELL SUMMARY REPORT Page: 1 WELL: TARN 4 WELL ID: AX9710 TYPE: AFC: AX9710 STATE: ALASKA AREA/CNTY: NORTH SLOPE WEST FIELD: UNLISTED SPUD: 03 / 12 / 97 START COMP: RIG:DOYON RIG 141 WI: 0% SECURITY: 2 BLOCK: FINAL: API NUMBER: 50-103-20249-00 03/11/97 (D1) TD: 108' (108) SUPV: WJP 03/12/97 (D2) TD: 760'(652) SUPV: WJP 03/13/97 (D3) TD: 2210' (1450) SUPV: WJP 03/14/97 (D4) TD: 2210' ( SUPV: WJP o) 03/15/97 (D5) TD: 2973'(763) SUPV: WJP 03/16/97 (D6) TD: 5124' (2151) SUPV: WJP 03/17/97 (D7) TD: 5459' (335) SUPV:WJP MW: 10.1 VISC: 66 PV/YP: 28/24 APIWL: 12.0 'PREPARING TO SPUD Move from from Tarn ~3A to Tarn ~4. Rig accepted @ 2100 hrs. 3/11/97. MW: 10.1 VISC: 83 PV/YP: 31/32 APIWL: 10.0 DRILLING AT 1126' Function test diverter. Hold pre-spud meeting. Drill 12.25" hole from 28' to 304' using HWDP. Drill from 304' to 760'. MW: 10.5 VISC: 56 PV/YP: 24/20 RUNNING 9-5/8" CASING Drill 12.25" hole from 760' to 2210'. APIWL: 9.2 MW: 10.4 VISC: 46 PV/YP: 19/12 APIWL: 9.2 M/U 8.5" BHA Hold pre job safety meeting. Run 9-5/8" casing. Pump first and second stage cement. Test BOPE. MW: 9.5 VISC: 50 PV/YP: 10/25 APIWL: 12.6 DRILLING @ 3351' Test BOPE to 500/3000 psi. Drill/wash soft cement to stage cementer @ 1308'. Pressure test casing to 2000 psi for 10 min, drill out stage cementer, re-test casing to 2000 psi, OK. Drill cement stringers from 1800' to 1915', top of hard cement. Drill hard cement, baffle landing collar, more hard cement to float collar @ 2116' Drill float collar, cement, float shoe and 20' of new hole. Perform shoe test to 740 psi, 16.0 ppg EMW. Drill 8.5" hole from 2220' to 2973'. MW: 9.5 VISC: 40 PV/YP: 13/13 M/U ROTARY BHA (TO LOCATE CORE Drill 8.5" hole from 2973' to 5124'. APIWL: 9.5 MW: 9.5 VISC: 40 PV/YP: 15/10 APIWL: 8.5 CORING @ 5480' (21' CUT SO FAR) Drill 8.5" hole from 5124' to 5215'. RIH with MWD and make MAD pass from 5142' to 5215'. Drill from 5215' t.,~5~5~ V CBU for samples. Drill 10' from 5449' to 5459'. MAY 2. 1997' Date: 4/21/97 ARCO ALASKA INC. WELL SUMMARY REPORT Page: 2 03/18/97 (D8) TD: 6048' (589) SUPV: WJP MW: 9.5 VISC: 46 PV/YP: 15/21 APIWL: 8.0 DRILLING @ 6048' Core from 5459' to 5546'. Make MAD pass from 5440' to 5546'. 03/19/97 (D9) TD: 6150' (102) SUPV: WJP MW: 9.5 VISC: 46 PV/YP: 14/21 APIWL: 7.8 HOLE CLEANOUT TRIP PRIOR TO RE Drill 8.5" hole from 5546' to 6150' TD. Pre jobs safety meeting. Run OH logging run #1: GR/Dipole Sonic/SP/Density/Neutron/Microlog. Run OH logging run #2: Numar M~I. 03/20/97 (D10) TD: 6150' ( 0) SUPV: WJP MW: 0.0 VISC: 46 PV/YP: 0/ 0 APIWL: 0.0 PUMPING P&A PLUG #1 Finish running log run #2 - Numar M_RI. Log run #3 - RFT. 03/21/97 (Dll) TD: 6150' ( 0) SUPV: WJP MW: 9.6 VISC: 45 PV/YP: 14/21 APIWL: 8.5 RIH TO TAG PLUG #2 Place abandonment plug #1 from 6150' TD to 4750' in three stages. Pump cement. RIH to tag hard cement at 4753'. Place abandonment plug #2 from 2400' to 1995'..Pump cement. 03/22/97 (D12) TD: 0'( 0) SUPV: WJP MW: 9.5 VISC: 40 PV/YP: 15/10 APIWL: 9.0 RIG RELEASED, MOVING TO TA~RN 2 RIH to tag hard cement at 2145' Pump more cement. RIH to tag hard cement at 2005'. Pump cement into top of wellhead. Release rig @ 2400 hrs. 3/22/97. End of WellSummary for Well:AX9710 MAY 2 1997' SURVEY CALCULATION AND FIELD WORKSHEET Job No. S,d. rack ,o. Page of Company ARCO ALASKA, INC. Rig Contractor & No. Doyon Drilling Inc. - Rig #141 Field EXPLORATION Well Name & No. TARN #4 Survey Section Name Definitive Survey BHI Rep. KIRT CHRISTENSEN ii j~l~"~l~ WELL DATA Target TVD (F'r) Target Coord. N/S Slot Coord. N/S 0.00 Grid Correction 0.000 Depths Measured From: RKB ~ MSL 0 SS~ Target Description Target Coord. EJW Slot Coord. EJW 0.00 Magn. Declination 27.480 Calculation Method MINIMUM CURVATURE , Target Direction (OD) Buil~Walk\DL per: lOOff[~ 30mO lOrnQ Vert. Sec. Azim. 90.00 Magn. to Map Corr. 27.480 Map North to: OTHER I I SuRvEY DATA Survey Survey Incl. Hole Course Vertical Total Coordinate Build Rate Walk Rate Date Tool Depth Angle Direction Length TVD Section N(+) / S(-) E(+) / W(-) DL Build (+) Right (+) Comment Type (ET) (DD) (DD) (FT) (F'r) (FT) (FT) (Per lO0 F-r)Drop (-) Left (-) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TIE IN POINT 12-MAR-97 MWD 108.00 0.00 0.00 1 08.00 1 08.00 0.00 0.00 0.00 0.00 0.00 12-MAR-97 MWD 169.50 0.30 23.50 61.50 169.50 0.06 0.15 0.06 0.49 0.49 9 1/2' M1C 1.2 DEG AKO 12-MAR-97 MWD 273.80 0.80 333.20 104.30 273.80 -0.16 1.05 -0.16 0.62 0.48 12-MAR-97 MWD 363.80 0.80 340.60 90.00 363.79 -0.65 2.20 -0.65 O. 11 0.00 12-MAR-97 MWD 434.00 0.70 319.80 70.20 433.98 -1.09 2.99 -1.09 0.41 -0.14 12-MAR-97 MWD 533.70 0.70 305.80 99.70 533.67 -1.97 3.81 -1.97 0.17 0.00 12-MAR-97 MWD 625.70 0.70 297.70 92.00 625.67 -2.93 4.40 -2.93 0.11 0.00 13-MAR-97 MWD 715.40 0.70 315.10 89.70 715.36 -3.80 5.05 -3.80 0.24 0.00 13-MAR-97 MWD 806.40 0.70 295.90 91.00 806.35 -4.69 5.68 -4.69 0.26 0.00 13-MAR-97 MWD 897.30 0.60 313.70 90.90 897.25 -5.54 6.25 -5.54 0.25 -0.11 13-MAR-97 MWD 989.00 0.60 314.00 91.70 988,94 -6,23 6.92 -6.23 0.00 0.00 13-MAR-97 MWD 1081.00 0.40 277.60 92.00 1080.94 -6.89 7.30 -6.89 0.40 -0,22 13-MAR-97 MWD 1174.40 0.20 293.00 93.40 1174.34 -7.37 7.40 -7.37 0.23 -0.21 13-MAR-97 MWD 1267.40 0.50 261.70 93.00 1267.34 -7.92 7.41 -7.92 0.37 0.32 13-MAR-97 MWD 1363.40 0.40 283.50 96.00 1363.33 -8.68 7.43 -8.66 0.20 -0.10 13-MAR-97 MWD 1462.80 0,40 267.00 99.40 1462.73 -9.34 7.49 -9.34 O. 12 0.00 13-MAR-97 MWD 1563.80 0.20 255.90 101.00 1563.73 -9.86 7.43 -9.86 0.21 -0.20 13-MAR-97 MWD 1662.40 0.40 307.10 98.60 1662,33 -10.31 7.59 -10.31 0.32 0.20 13-MAR-97 MWD 1752.10 0.20 239.70 89.70 1752.03 -10.69 7.70 -10.69 0.41 -0.22 13-MAR-97 MWD 1843.90 O. 10 22.70 91.80 1843.63 -10.80 7.70 -10.80 0.31 -0.11 13-MAR-97 MWD 1941.50 0.30 273.00 97.60 1941.42 -11.02 7.79 -11.02 0.36 0.20 13-MAR-97 MWD 2026.40 0.20 254.50 84.90 2026.32 -11.38 7.76 -11.38 0.15 -0.12 __ 13-MAR-97 MWD 2126,90 0.30 225.30 100.50 2126.82 -11.74 7.53 -11.74 O. 16 0.10 _ i SURVEY CALCULATION AND FIELD WORKSHEET Job No. S,detrack No. age 3 Company ARCO ALASKA, INC. Rig Contractor & No. Doyon Drilling Inc. - Rig #141 Field EXPLORATION Well Name & No. TARN #4 Survey Section Name Definitive Survey BHI Rep. KIRT CHRISTENSEN mm ~ m ~a~: WELL DATA Target TVD (FT) Target Coord. N/S Slot Coord. N/S 0.00 Grid Correction 0.000 Depths Measured From: RKB ~] MSL ~ SS[- Target Description Target Coord. E/W Slot Coord. E/W 0.00 Magn. Declination 27.480 Calculation Method MINIMUM CURVATURE Target Direction (DD) Build~Walk\DL per: lOOff~ 30mE] lomE] Vert. Sec. Azim. 90.00 Magn. to Map Corr. 27.480 Map North to: OTHER ii SURVEY DATA Survey Survey Incl. Hole Course Vertical Total Coordinate Build Rate Walk Rate Date Tool Depth Angle Direction Length TVD Section N(+) / S(-) E(+) / W(-) DL Build (+) Right (+) Comment Type (IT) (DD) (DD) (FI') (F'r) (FT) (F'r) (Per lO0 FT) Drop (-) Left (-) 13-MAR-97 MWD 2155.10 0.20 296.80 28.20 2155.02 -11.84 7.50 -11.84 1.08 -0.35 15-MAR-97 MWD 2238.60 0.30 260.40 83.50 2238.52 -12.18 7.53 -12.18 0.22 0.12 6 3/4' M1XL 1.2 DEG RKO 15-MAR-97 MWD 2432.00 O. 10 271.80 193.40 2431.92 -12.85 7.45 -12.85 O. 10 -0.10 15-MAR-97 MWD 2525.80 1.10 112.90 93.80 2525.72 -12.10 7.10 -12.10 1.27 1.07 15-MAR-97 MWD 2617.20 1.60 109.60 91.40 2617.09 -10.09 6.33 -10.09 0.55 0.55 15-MAR-97 MWD 2710.40 1.50 109.90 93.20 2710.26 -7.72 5.48 -7.72 O. 11 -0.11 15-MAR-97 MWD 2805.00 1.40 113.90 94.60 2804.83 -5.50 4.59 -5.50 0.15 -0.11 15-MAR-97 MWD 2896.70 1.30 113.00 91.70 2896.50 -3.52 3.73 -3.52 0.11 -0.11 16-MAR-97 MWD 2987.60 1.00 108.90 90.90 2987.38 -1.82 3.07 -1.82 0.34 -0.33 16-MAR-97 MWD 3082.30 0.90 105.20 94.70 3082.07 -0.32 2.61 -0.32 0.12 -0.11 16-MAR-97 MWD 3173.70 0.80 121.20 91.40 3173.46 0.92 2.09 0.92 0.28 -0.11 ' 16-MAR-97 MWD 3268.80 0.60 131.70 95.10 3268.55 1.86 1.41 1.86 0.25 -0.21 16-MAR-97 MWD 3363.10 0.50 112.30 94.30 3362.85 2.61 0.93 2.61 0.22 -0.11 16-MAR-97 MWD 3457.00 0.30 103.70 93.90 3456.74 3.23 0.71 3.23 0.22 -0.21 16-MAR-97 MWD 3550.10 0.20 101.40 93.10 3549.84 3.62 0.62 3.62 0.11 -0.11 16-MAR-97 MWD 3652.80 0.20 131.20 102.70 3652.54 3.93 0.47 3.93 0.10 0.00 16-MAR-97 MWD 3736.20 0.10 125.70 83.40 3735,94 4.10 0.33 4.10 0.12 -0.12 16-MAR-97 MWD 3832.10 0.20 322.00 95.90 3831.84 4.07 0.42 4.07 0.31 0.10 16-MAR-97 MWD 3927.10 0,20 306.70 95.00 3926.84 3.83 0.65 3.83 0.06 0.00 16-MAR-97 MWD 4025.90 0.10 289.70 98.80 4025.64 3.61 0.78 3.61 0.11 -0.10 16-MAR-97 MWD 4121.60 O. 10 213,90 95.70 4121.34 3.49 0.74 3.49 O. 13 0.00 16-MAR-97 MWD 4203.90 0.20 250.60 82.30 4203.64 3.31 0.63 3.31 O. 16 0.12 16-MAR-97 MWD 4302.00 0.10 225.20 98.10 4301.74 3.09 0.51 3.09 0.12 -0.10 16-MAR-97 MWD 4361.50 0.10 122.10 59.50 4361.24 3.10 0.45 3.10 0.26 0.00 i SURVEY CALCULATION AND FIELD WORKSHEET Job No. 0450-84126 Sidetrack No. Page 3 of 3 Company ARCO ALASKA, INC. Rig Contractor & No. Doyon Drilling Inc. - Rig #141 Field EXPLORATION Well Name & No. TARN #4 Survey Section Name Definitive Survey BHI Rep. KIRT CHRISTENSEN WELL DATA Target TVD (FT) Target Coord. N/S Slot Coord. N/S 0.00 Grid Correction 0.000 Depths Measured From: RKB ~ MSL[--J SS~ Target Description Target Coord. F_./W Slot Coord. E/W 0.00 Magn. Declination 27.480 Calculation Method MINIMUM CURVATURE Target Direction (DD) BuiI~Walk\DL per: lOOft[~ 30mE] lomr-] Vert. Sec. Azim. 90.00 Magn. to Map Corr. 27.480 Map North to: OTHER i i i SURVEY DATA Survey Survey Incl. Hole Course Vertical Total Coordinate Build Rate Walk Rate Date Tool Depth Angle Direction Length 'rVD Section N(+) / S(-) E(+) / W(-) DL Build (+) Right (+) Comment Type (FT) (DD) (DD) (FT) (FT) (FT) (FT) (Per loo FT) Drop (-) Left (-) 16-MAR-97 MWD 4459.90 1.40 97.60 98.40 4459.63 4.36 0.24 4.36 1.33 1.32 ~ /--. 16-MAR-97 MWD 4551.20 1.40 101.30 91.30 4550.90 6.56 -0.12 6.56 0.10 0.00 16-MAR-97 MWD 4645.70 1.20 95.40 94.50 4645.38 8.68 -0.44 8.68 0.25 -0.21 16-MAR-97 MWD 4740.10 1.30 94.30 94.40 4739.76 10.73 -0.62 10.73 0.11 0.11 16-MAR-97 MWD 4827.20 1.10 98.10 87.10 4826.84 12.54 -0.81 12.54 0.25 -0.23 16-MAR-97 MWD 4921.30 1.10 97.90 94.10 4920.92 14.33 -1.06 14.33 0.00 0.00 ,., 17-MAR-97 MWD 5013.50 1.10 89.70 92.20 5013.10 16.09 -1.18 16.09 0.17 0.00 17-MAR-97 MWD 5105.30 1.00 91.70 91.80 51 04.89 17.78 -1.20 17.78 0.12 -0.11 17-MAR-97 MWD 5207.60 0.80 82.60 102.30 5207.17 19.38 -1.13 19.38 0.24 -0.20 .., 17-MAR-97 MWD 5295.70 0.80 83.00 88.10 5295.27 20.60 -0.98 20.60 0.01 0.00 17-MAR-97 MWD 5392.90 0.70 75.00 97.20 5392.46 21.84 -0.74 21.84 0.15 -0.10 19-MAR-97 MWD 5485.60 0.80 77.00 92.70 5485.15 23.02 -0.45 23.02 0.11 0.11 19-MAR-97 MWD 5577.60 0.70 60.90 92.00 5577.14 24.14 -0.03 24.14 0.25 -0.11 19-MAR-97 MWD 5668.30 0.60 46.10 90.70 5667.84 24.96 0.57 24.98 0.21 -0.11 '1 19-MAR-97 MWD 5763.20 0.50 40.20 94.90 5762.73 25.59 1.23 25.59 0.12 -0.11 . 19-MAR-97 MWD 5854.00 0.50 20.40 90.80 5853.53 25.98 1.90 25.98 0.19 0.00 19-MAR-97 MWD 5944.70 0.70 24.00 90.70 5944.22 26.35 2.78 26.35 0.22 0.22 19-MAR-97 MWD 6038.60 0.60 15.20 93.90 6038.12 26.71 3.78 26.71 0.15 -0.11 19-MAR-97 MWD 6076.30 0.60 358.50 37.70 6075.81 26.75 4.17 26.75 0.46 0.00 19-MAR-97 MWD 6150.00 0.50 358.50 73.70 6149.51 26.73 4.94 26.73 0.00 0.00 Projected Data - NO SURVEY _ -- Tarn #4 P&A SCHEMATIC Final 16" Conductor Cb .115' RKB Cmt Plug #3 GL - 327' MD 12-1/4" Hole 9.5 ppg Mud between plugs (327'-2005' 9-5/8" Surface Casing 2195' MD-RKB Cmt 2005'- 2400' MD- -~---- RKB 9.5 ppg Mud between plugs (2400'-4750') 8-1/2" to 9" Open Hole ~ 6150' MD-RKB .Cmt 475O'- 615O' MD- RKB BKD/jt 3-20-97 E] ARCO Exploration Company [-~ ARCO Oil and Gas Company ~ ~'] ARCO Alaska, inc. Record Of Shipment Of Confidential Information To: IDistrict: Alaska From: ARCO Alaska, Inc. AOGCC Attn.' Mr. Robert P Crandall P.o. Box 100360 3001 Porcupine Dr Anchorage, Alaska 99510-0360 Anchorage Alaska 99501 Attn.: Kelli Thibodeau (907)265-6240 (X/ Enclosed Reports )Under separate cover ( )Via Tarn 2 ~?-If End of Well Report as displayed by Epoch Well Logging, Inc. Completion Reports as Displayed by AAI Tarn 3 q'7'-'" O'?-" '-4 Tarn3a $'q- O"~G Tarn 4 Logs 1 Each Blueline and Reproducible Formation Log as Displayed by Epoch Well Logging, Inc. qT-'-' I~ote - Pie,ac. se verify, and acknowledge receipt, by signin9 and return , ece, ed Remarks: Please Note that ~lll included information is CONFIDENTIAL. in9 a copy of this transmittal. Date 4/28/97 Page I State of Alaska .ALAS~ 0IL & GAS CONSERVATION COM/(ISSION · Nots casimq size, wt, dep~, =t vol, & procedure. Liner: Perf in~a?~a!s - tops: ~ ~ '"~--~' Review the well file, and-c~ent on plugging, well head status, and location clearance - orovide loc. clear, code. Location Clear~ce- { - 2 7 =od. , .~ ARCO Alaska, Inc. Post Office Box 1 Anchorage, Alaska 99510-0360 Telephone 907 276 1215 April 21, 1997 Mr. David J. Johnston Commissioner State of Alaska Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Subject: Tarn #4 (Permit No. 97-25/397-059) Well Completion Report Dear Mr. Commissioner: ARCO Alaska, Inc., as operator of the exploration well Tarn #4, submits the the enclosed "Well Completion Report" (form 407). The Commission is requested to keep confidential the enclosed information due to the exploratory nature of the well. If you have any questions regarding this matter, contact me at 265-6434 or Sharon Allsup-Drake at 263-4612. J. Trantham Drilling Engineer Kuparuk Development JAT/skad Anch0ra(10 STATE OF ALASKA ALA~r,,~ OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Status of Well" ' ClassificatiOn (~f ServiCe Well '" [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number ARCO Alaska Inc. 97-25 397-59 3. Address ................... 8~ APl Number .... P. O. Box 100360, Anchorage, Alaska 99510 50-103-20249 4. Location of well at surface 9. Unit or Lease Name 1120' FNL, 510' FWL, Sec. 1, TDN, R7E, UM ~::;~;,~.~i ',., -' ~'~;-T, Exploration At top of productive interval i u,.,,~.:., .') :"~1'ma~' It''''''"' ~1' '~-b. Well Number same as above i 3ZZ~'./-~,~ i ! Tarn 4 Attotal depth ~ -ii~:~;:'.:':~., i ~1"i. I~ield and Pool ' 5. Elevation in feet (indicate KB, DF, etc.) 16. Lease"Designation and Serial No. Exploration RKB 28', Pad 128'I ADL 375073, ALK 4297 12. Date Spudded i13. Date T.D. Reached ! 14. Date Comp., Susp., or Aband.115. Water depth, if offshore 116. No. of Completions 3/12/97 ! 3/19/97, 3/.22/97 ..... i N/A MSLI One 17. Total Depth (MD'+TVD) i 18. Plug Back Depth (MD+TVD)119. Directional Surveyl20. Depth' where SSSV Set~21. Thickness of Permafrosl ......... __6!__5___0_ ........ _6__1_ 50___FT~ ......... FT~ [] Yes [] No ! .......... .N./A MD./ 1650' (Approx.) 22. Type Electric or Other Logs Run 23. CASING, LINER AND CEMENTING RECORD ~AsING .......... S E'I-r'ING E~EPTH HOLE .......................... ...... S_!.Z__E_ ...... VV~'__:_pER _FT.. GRADE ...... __TOP BoTtoM , SIZE CEMENTING_RECORD AMOUNT PULLED .... 16" 62.5# H-40 Surf. 115' 24" 304 Sx AS I 9.625" 40.0# L-80 Surf. 2195' 12.25" 751 Sx Class G Plug #1 4750' 6150' Plug #2 1 995' 2400' 24. Perforations open to Production (MD+TVD of TOp and Bottom 25. TUBING RECORD and interval, size and number) .... SIZE DEPTH SET (MD) PACKER SET (MD) MD TVD MD TVD .................. 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. · ,, DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 27. PRODUCTION TEST Date First Production iMethod of'Oper~'~ion (Flowing, gas iift~ e~c.) Date of Test iHours Tested '[PRODUCTION FOR OIL-I~'BL '~AS-MCF " WATER-BEE CHOKE SIZE" i GAS-OIL RATIO' i iTEST PERIOD' I iFi~-~ T~JSii'ig-iCasing Pressure OALCULATED· OIL-BBL '-I~,~:~l-~ ............ WATER-BBL 'Oii--GRAVI'-i:~-',i~'~-~--(~bRRi .......................... Press. i ~_4-HOUF~ RATE 28. CORE DATA Brief d~scription of Iithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chiF~s. - .......................... .............. Form 10-407 Rev. 07-01-80 7~ In Duplicate 29. Geologic I' 30. Formation Tests Measured True Vertical Include interval tested, pressure data, all fluids recovered Marker Name Depth Depth and gravity, GOR, and time of each phase. ~i L.i~t of AttaChments t ................. Summary of Daily Drilling Reports, Surveys 32. I hereby certify that ~oinc~is true and correct to the best of my knowledge __ r,_ CI.._____~___ ~ Title. ,-- ~ ¢., __ 'Z-~- ....... --'" ~ Prepared B~ Name/~lumber: 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 Date: 4/21/97 ARCO ALASKA INC. WELL SUMMARY REPORT Page: 1 WELL:TARN 4 WELL ID: AX9710 TYPE: AFC: AX9710 STATE: ALASKA AREA/CNTY: NORTH SLOPE WEST FIELD: UNLISTED SPUD:03/12/97 START COMP: RIG:DOYON RIG 141 WI: 0% SECURITY: 2 BLOCK: FINAL: API NUMBER: 50-103-20249-00 03/11/97 (D1) TD: 108' (108) SUPV: WJP 03/12/97 (D2) TD: 760' (652) SUPV: WJP 03/13/97 (D3) TD: 2210' (1450) SUPV: WJP 03/14/97 (D4) TD: 2210' ( SUPV: WJP 0) 03/15/97 (D5) TD: 2973' (763) SUPV: WJP 03/16/97 (D6) TD: 5124' (2151) SUPV: WJP 03/17/97 (D7) TD: 5459' (335) SUPV: WJP MW: 10.1 VISC: 66 PV/YP: 28/24 APIWL: 12.0 PREPARING TO SPUD Move from from Tarn %3A to Tarn %4. Rig accepted @ 2100 hrs. 3/11/97. MW: 10.1 VISC: 83 PV/YP: 31/32 APIWL: 10.0 DRILLING AT 1126' Function test diverter. Hold pre-spud meeting. Drill 12.25" hole from 28' to 304' using HWDP. Drill from 304' to 760'. MW: 10.5 VISC: 56 PV/YP: 24/20 RUNNING 9-5/8" CASING Drill 12.25" hole from 760' to 2210'. APIWL: 9.2 MW: 10.4 VISC: 46 PV/YP: 19/12 APIWL: 9.2 M/U 8.5" BHA Hold pre job safety meeting. Run 9-5/8" casing. Pump first and second stage cement. Test BOPE. MW: 9.5 VISC: 50 PV/YP: 10/25 APIWL: 12.6 DRILLING @ 3351' Test BOPE to 500/3000 psi. Drill/wash soft cement to stage cementer @ 1308'. Pressure test casing to 2000 psi for 10 min, drill out stage cementer, re-test casing to 2000 psi, OK. Drill cement stringers from 1800' to 1915', top of hard cement. Drill hard cement, baffle landing collar, more hard cement to float collar @ 2116' Drill float collar, cement, float shoe and 20' of new hole. Perform shoe test to 740 psi, 16.0 ppg EMW. Drill 8.5" hole from 2220' to 2973' MW: 9.5 VISC' 40 PV/YP: 13/13 M/U ROTARY BHA (TO LOCATE CORE Drill 8.5" hole from 2973' to 5124' APIWL: 9.5 MW: 9.5 VISC: 40 PV/YP: 15/10 APIWL: 8.5 CORING @ 5480' (21' CUT SO FAR) Drill 8.5" hole from 5124' to 5215'. RIH with MWD and make MAD pass from 5142' to 5215' Drill from 5215' to 5459' CBU for samples. Drill 10' from 5449' to 5459'. Date: 4/21/97 ARCO ALASKA INC. WELL SUMb~z~qY P~EPORT Page: 2 03/18/97 (D8) TD: 6048' (589) SUPV: WJP MW: 9.5 VISC: 46 PV/YP: 15/21 APIWL: 8.0 DRILLING @ 6048' Core from 5459' to 5546'. Make MAD pass from 5440' to 5546' 03/19/97 (D9) TD: 6150' (102) SUPV:WJP MW: 9.5 VISC: 46 PV/YP: 14/21 APIWL: 7.8 HOLE CLEANOUT TRIP PRIOR TO RF Drill 8.5" hole from 5546' to 6150' TD. Pre jobs safety meeting. Run OH logging run %1: GR/Dipole Sonic/SP/Density/Neutron/Microlog. Run OH logging run #2: Numar PK{I. 03/20/97 (D10) TD: 6150' ( 0) SUPV: WJP MW: 0.0 VlSC: 46 PV/YP: 0/ 0 APIWL: 0.0 PUMPING P&A PLUG ~1 Finish running log run #2 - Numar NiRI. Log run #3 - RFT. 03/21/97 (Dll) TD: 6150' ( 0) SUPV: WJP 03/22/97 (D12) TD: 0' ( 0) SUPV: WJP MW: 9.6 VISC: 45 PV/YP: 14/21 APIWL: 8.5 RIH TO TAG PLUG %2 Place abandonment plug #1 from 6150' TD to 4750' in three stages. Pump cement. RIH to tag hard cement at 4753'. Place abandonment plug ~2 from 2400' to 1995'. Pump cement. MW: 9.5 VISC: 40 PV/YP: 15/10 APIWL: 9.0 RIG RELEASED, MOVING TO TARN 2 RIH to tag hard cement at 2145'. Pump more cement. RIH to tag hard cement at 2005'. Pump cement into top of wellhead. Release rig @ 2400 hrs. 3/22/97. End of WellSummary for Well:AX9710 TO: State AOGC 3001 Porcupine Anchorage, Alaska 99503 DATE: APRIL 7, 1997 AIRBILL: 864038 AFT#: ABV07-04-07-01 CHARGE CODE: 15768 OPERATOR: AAI SAMPLE TYPE: STATE CHIPS (VPE'S) NAME: TARN #4 NUMBER OF BOXES: 2 SAMPLES SENT: BOX #1 PLUGS 1-40 BOX #2 PLUGS 41-85 SENT BY: D.L. PRZYWOJSK! UPON RECEIPT OF THESE SAMPLES PLEASE NOTE ANY DISCREPANCIES AND SEND A SIGNED COPY OF THIS TRANSMITTAL TO: ARCO ALASKA, INC. BAYVIEW GEOLOGIC FACILITY P. O. BOX 100360 ANCHORAGE, AK. 99510-0360 ATTN: D. L. Przywojski ABV-100 ATO 1450 RECEIVED BY: R. HANN©N TO: State AOGC 3001 Porcupine Anchorage, Alaska 99503 DATE: APRIL 7, 1997 AIRBILL: 864038 AFT#: ABV07-04-07-01 CHARGE CODE: 15768 OPERATOR: AAI SAMPLE TYPE: STATE CHIPS (VPE'S) SAMPLES SENT: BOX #1 PLUGS 1-40 BOX #2 PLUGS 41-85 NAME: TARN #4 C.~ ~ ~"~ NUMBER OF BOXES.' 2x~ SENT BY: D.L. PRZYWOJSK! UPON RECEIPT OF THESE SAMPLES PLEASE NOTE ANY DISCREPANCIES AND SEND A SIGNED COPY OF THIS TRANSMITTAL TO: ARCO ALASKA, INC. BAYVIEW GEOLOGIC FACILITY P. O. BOX 100360 ANCHORAGE, AK. 99510-0360 ATTN: D. L. Przywojski ABV-100 ATO 1450 RECEIVED BY: R. HANN©N ARCO-ALASKA TARN #4 NORTH SLOPE Sample # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Depth 5459.00 5460.10 5461.20 5462.00 5463.00 5464.00 5465.10 5466.00 5467.00 5468.00 5469.00 ~/ 5470.00¢' 5471.00 ',/ 5472.00 '/ 5473.00 5474.00 v" 5475.00 '/ 5476,00 5477.00 5478.00 5479.20 5480.00 5481.00 5482.00 5483.20 5484.00 5485.00 5486.00 5487, O0 5488.00 5489.00 5490.00 5491.00 5492.00 5493.00 5494.00 5495.0O 5496.00 5497.00 5498.20 5499.00 5500.00 5501.00 TARN4BE.XLS BU'I-I' END SAMPLES INVENTORY(Vertical) Sample # 44 45 46 47 48 49 5O 51 52 53 54 55 56 57 58 59 6O 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 8O 81 82 83 84 85 Depth 5502,00 5503.00~ 5504,00 5505,00 5506.00 5507,00 5508,00 5509.00 5510.00 5511.00 5512.00 5513,00 5514,00 5515,00 5516.20 5520.20 5521.00¢' 5522.00 5523.00 5524.00 5525.10 5526.00 5527.00 5528.10 5529.10 -/ 5530.20 5531.00 ¢' 5532.10 v' 5533.20 5534.50 ~/ 5536.00 5537.10 5538.00 5539.20 ~'' 5540.10 ~/ 5541.20 ~/ 5542.2O 5543.00~/ 5544.10 j 5545.00 v 5546.60 5547.10 t~/ File #97113 3-Apr-97 Page 1 TRANSMITTAL AND ACKNOWLEDGEHENT OF RECEIPT OF HATERIALS CORE LABORATORIES 3430 UNICORN PO. BAKERSFIELO, CA 93308 (aos) z-8 oo The below listed material is being forwarded via- Core Lab Personnel DHL Federal Express OTHER Description of materials' RECEIVED BY- REMARKS. DATE SHIPPED: DATE RECEIVED' PLEASE ADVISE IF MATERIAL IS NOT RECEIVED WITHIN FIVE DAYS MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: David Joh~ DATE: Chairman .~ March 22, 1997 THRU: Blair Wondzell, ~ FILE NO: P. I. Supervisor ;~f'~ FROM: John Spaulding~.,,,,.~ SUBJECT: Petroleum Insp~/' .... n9wlcdve.doc Open Hole Cement Plug ARCO Tarn # 4 Exploration Permit 97-25 Saturday March 22, 1997: I witnessed the open hole cement plug in the plug and abandonment program for ARCO's Tarn # 4 an exploration well. The AOGCC Plug and Abandonment Report is attached for reference. The well was cemented from total depth/~(TD) to 4,753' MD. The top of the hydrocarbon bearing zone is at 5,440' MD. The plug was tagged at 4,753' and 17,000 lbs. of weight for 10 minutes with the mud pumps rolling at 35 strokes per minute and pressure of 250 psi. There is a total of 687' of cement above the hydrocarbon zone. Tuesday March 25, 1997: I inspected the surface plug and abandonment and found everything to be satisfactory. The location will be inspected for debris later this summer. Summary: I witnessed the open hole cement plug at ARCO's Tarn well # 4. Attachments: nw91cvde.xls Unclassified Confidential (Unclassified if document removed) X Confidential STATE OF ALASKA ALASKA OIL AND GAS CONSERFATION COMMISSION Plug And Abandonment Report Date: Operator: ARCO Well Name: Tarn # 4 Operator Rep.: Bill Penrose PTD No.: 97-25 Lease No.: Well No.: 4 Sec. T-R Sec.-l, T-9N, R-7E Meridian: Umiat Total Depth: 61 50 Elevation: Mud Wt.: 9.5 3/22/97 PPg. CASING DATA: Drive Pipe: na O.D." Set @: na ft. With na Penetration Conductor: 16 O.D." Set @: 80 ft. Surface: 9 5/8" O.D." Set @: 2195 Intermediate: na O.D." Set@: na ft. Prodctn: na O.D." Set@: na ft. PLUGGING DATA: 1. Open Hole Plugs: Top of hydrocarbon zone 5440', top of cement 4753, 687' of good cement set down on cement with pumps rolling at 35 SPM, 250 psi, 17,000 lbs. drill string weight for 10 min. 2. Open Hole Isolation Plugs: 3. Perforation Plugs: 4. Annulus Plugs: 5. Casing Stub Plugs: 6. Surface Plug: Casing Removal: REMARKS: " Casing Cut @ Feet " Casing Cut @ Feet " Casing Cut@ Feet " Casing Cut@ Feet Distribution: orig - Well File c - Operator c- DNR/DOG c- Database c- Rpt File c - Inspector Inspector (s): John H. Spaulding FI-000 (Rev. 3/93) N9WLCVDE.XLS Mar, ~U, i~'f 'f'~.vM AECO ALA5.~[A lf~E; l'~o, ooo~ r, l/o _ STATE OF ALASKA A,~ _.,~, OIL AND GAS CONSERVATION OOMMISSI,.,N APPLICATION FOR SUNDRY APPROVALS 1. Typ~'~ Request: Abandon __X__. Suspend__ Operation Shutdown Re-enter suspended well__ Alter casing __ Repair well__ Plugging x Time extension Stimulate Change approved program_ Pull tubing ,,--,.._ V.arlance_ Perforate Other 2~ t~)-~'~'Operator 5. Type gl Well: $. Datum elevation (DF or KB) Development __ ARCO Alaska. Inc. ,. Exploratory _~X ~RKB 28'. Pad 128' leer 3. Addres~ Stratigraphic ~ 7. Unit or Properly name P. O. E~ox 100360, Anchorage, AK 99510 Service ~ N/A .. 4, Location of well at sur[ace 8, Well number 1119' FNL, 509' FEL, Sec. 1, T9N, R7E, UM _Ta~rn 4 At top of productive interval 9. Permit number 1119' FNL, 509' FEL, Sec. 1, T9N, RTE, UM 97-25 At e~fective depth 10. APl number 50-103 -_2Q24~. A~ ~o~al depth 1]. I~ield/Pool 1119' FNL~ 509' FEL~ Sec. 1~ T9N~ R7E~ UM T.a..r.n.. Exp!oration 12. Present well condition summary Total Depth: measured 61 50 feet Plugs (measured) (approx) true vertical 61 50 feet E~fective depth: measured feet Junk (measured) (approx) true vertical feet Casing Length Size Cemented Measured depth True ver[ical depth Structural Conductor 8 0' 1 6" 304 sx 11 5' 11 5' Surface 2195' 9.625" 751 Sx 2195' ?.195' intermediate Production Liner Perlorafion depth: measured None true vertical ORIGINAL Tubing (size, gr&de, and measured depth) None Packers and SSSV (type end measured depth) None , 13, Attachments Description summary o~ proposal Detailed operation program __ BOP s~,etch__ 14. Estimated date for commencing operation 15. Status of well classification as; Oil X Gas Suspended FOP, COMMIS,$10N U8E ONLY Conditions o~ approval: .r,.~,jD, Commission so representative may witness IApproval No. Plug integrity,,- BOP Test Location clearance ~ I ~;;~ (~ Mechanical Integrity Test . Subsequent form require 10,_/,~'O~ - - Approwr. I b), ttle order of the Gommission 0avid W, Johnstot~ Gommissioner Date iN~~I Form 10-403 Rev 06/15/88 SUBMIT RIPL,ICATE Approved Copy Returned h,i,,,'-', R Z i '1997 Gas Cons. Commission ~['~;P--[-O'9' )ISN ,'J.'~gHS i NOtLVal3DEINOO d~V0 ~ O1~ TIEI0 'R3M AaOJ. VSOldX3 · 4 I :..ON ~)N~'¥BO ~N ]~1..'1 ,ELD]I;)_ ~(uod~uo3 Ple!Jt, l:~!B o!;uollV jo ,(~olp!SqnS 'OUl 'e lSel¥ OOUV ,L6t~ ,66 I. fill II I · ,Z'/-~I. = (]Vd *:l:DI DI~ *.:10 dO.L ,g'~;~k -- eNl"iOldO NO '-i'N'J ,0~; t' L '"'I'M'J ,0 Lg 66'/./.;"Z. 9~ - X ,O['O'Cjl~ ,g I, ,ogl = 'ONO'I ,,cjt~6'ZO ,0 L ,OZ. = '.LV'I NVIOI~31~I J.¥1Hr3 O~J.:D~t.LO~id NI H,LIM t#'' I ,tgi. ¥3tdY ,gL~ 1,1, L Ol~ NOAOCl t'ff'" NaV;L , LZ ,OO~ OVO~ SS~t33V /- Mar, 2:U. 199'/ ?'33t~M !~'46 rqo. ~o~ r. ,~/,~ Tarn#4 P&A SCHEMATIC Final Scenario ANCO ALASKA Cementing Calculations for P&A Plugs #1 / #2 / #3 16" Conductor (~ 11~' RKD. ~ Hole 9-5/s" su ~ac_e Open Hole MB-RKB__ Cmt Plus #3 Orillpipe Size / Hole Size: 9" OH x 5" DP annular capacity: 9 5/8" x 5" DP annular capacity: 5" DP capacity: 9" OH capacity: 9 5/8" capacity: BHST (Plug #1): BHST (Plug #2): Plug ¢3: Volume (300')(0.4257 cu-ft/ft) · 127,7 cu-ft System: 138 sacks ArcticSET I 5" / g" 0,3054 cu-ft/ft 0,2894 cu-h/f! 0.09972 cu-ft/ft 0.4418 cu-ft/ft 0.4257 cu-ft/tt 11,5~F 70°F 9.5 PPg Mud between olugs Slurry' Volume 128 cu-ft (300'-1995'~ Slurry Weight 15.7 ppg - Slurry Yield 0.93 cu-ft/sk Thickening Time 2-3 hours le95'- 2400' MD- 9~5~pD _o Mud between Dluas f2400'-4750'_~ 6150' MD, RK~ Plug #2: Volume (2,400'-2195')(0.4418 cu-f'Jtt) =91 cu-ft (2195'-1995')(0.4257 cu-ft/ft) - 85 cu-ft w/DP in hole 83 cu-f! is in 9" OH & 93 cu-ft is in 9 5/8" Height .(93 cu-ft)/(0,2894 cu-ft/ft + 0.09972 cuWA) - 239' TOC = [2,195' - 239') = 1,956' System; 153 sacks Class G +1% S1 (CACI2) + 0,2% D46(defoam) + 0,2% D65(dispersant) Slurry Volume 91 cu-ft + 8.5 cu-ft ,. 176 cu4t Slurry Weight 15.8 ppg Slurry Yield 1.15 cu-ft/sk Thickening Time 2-3 hours Balanced Plug Pump Schedule (#2): 10 bbls water; 31,3 bbls cement; 3.5 bbls water; 32 bbls mud (underdisplace -1-2 bbls) Plug #1: Volume (4750'-6150')(0.4418 cu-ft/ft) -- 619 cu-ft Height =(619 cu-ft)/(0,$054 cu~ft/ft ,0.09972 cu-Wf0 =1528' System: 538 sacks Class G + 0,1% DS00(retarder) + 0.2% D46(defoam) + 0.3% D65(dispersant) Slurry Weigh! 15.8 ppg Slurry Yield 1.1S cu-ft/sk Thickening Time 3-4 hours Balanced Plug Pump Schedule (#1): 10 bbls water; 110 bbls cement; 3.3 bbls water; 81 bbls mud (underdisplace -1-2 bbls) BKD/it 3-2O-97 -, TO: State AOGC', 3001 Porcupine Anchorage, Alaska 99503 DATE: MARCH 20, 1997 AIRBILL: AL646231 AFT#: ABV07-03-20-01 CHARGE CODE: AX 9710 OPERATOR: AAI SAMPLE TYPE: iith cuttings SAMPLES SENT: TARN 3A TARN 4 ~'-7140' 120'-6150' N/~N~ME: TARN #3A~'&- ~ '~~------~-- NUMBER OF BTOxES: 9 SENT BY: D.L. PRZYWOJSKi UPON RECEIPT OF THESE SAMPLES PLEASE NOTE ANY DISCREPANCIES AND SEND A SIGNED COPY OF THIS TRANSMITTAL TO: ARCO ALASKA, INC. BAYVIEW GEOLOGIC FACILITY P. O. BOX 100360 ANCHORAGE, AK, 99510-0360 ATTN: D. L. Przywojski ABV-100 RECEIVED BY:m__~//~--~ DATE: CC: R. HANNON ATO 1450 TO: State AOGC 3001 Porcupine Anchorage, Alaska 99503 DATE: MARCH 20, 1997 AIRBILL: AL646231 AFT#: ABV07-03-20-01 CHARGE CODE: AX 9710 OPERATOR: AAI SAMPLE TYPE: lith cuttings NUMBER OF BOXES: 9 SAMPLES SENT: TARN 3A TARN 4 ""' 7140' 120'-6150' SENT BY: D.L. PRZYWOJSKI UPON RECEIPT OF THESE SAMPLES PLEASE NOTE ANY DISCREPANCIES AND SEND A SIGNED COPY OF THIS TRANSMITTAL TO: RECEIVED ARCO ALASKA, INC. BAYVIEW GEOLOGIC FACILITY P. O. BOX 100360 ANCHORAGE, AK. 99510-0360 ATTN: D. L. Przywojski ABV-100 CC: R. HANNON ATO 1450 MEMORANDUM TO: THRU: State of Alaska Alaska Oil and Gas Conservation Commission David Johns~ Chairman Blair Wondzeil, ~ P. !. Supervisor -~,fi-r FROM: Chuck Scheve,~)~ SUBJECT: Petroleum inspf~ctor DATE: March 15, 1997 FILE NO' a9wkcoee.doc BOPE Test Doyon 141 Tarn #4 PTD # 97-25 Saturday March 15, 1997: I traveled to ARCOs Tarn #4 exploration well being drilled by Doyon Rig 141 and witnessed the initial BOPE test on this well. _ As the attached AOGCC BOPE test report shows the test lasted 3 hours with one failure. The ball type floor safety valve failed to pressure test. This valve was taken out of service for repairs and a second valve was tested and placed in service. The testing went well with good test procedures being employed by the Doyon crews. The rig was clean and all related equipment appeared to be in good working order. The location was well organized allowing good access to all areas of the rig. Summary: I witnessed the initial BOPE on Doyon Rig 141 Drilling ARCOs Tarn #.4 well test time 3 hours one failure. Attachment: a9wkcoee.xls Unclassified X Confidential Confidential (Unclassified if doc. removed ) STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION BOPE Test Report OPERATION: Drlg: X Drlg Contractor: Operator: Well Name: Casing Size: 9 5/8 Test: Initial X Workover: Doyon Rig No. ARCO Tarn #4 Set @ 2,202 Weekly Other 141 PTD # Rep.: Rig Rep.: Location: Sec. DATE: 97-25 Rig Ph.# 3/15/97 263-3101 Bill Penrose Mike Droddy I T. 9N R. 7E Meridian UM TEST DATA MISC. INSPECTIONS: Location Gen.: OK Well Sign OK Housekeeping: OK (Gen) Drl. Rig OK PTD On Location YES ¢ Hazard Sec. OK Standing Order Posted YES , BOP STACK: Annular Preventer Pipe Rams Lower Pipe Rams Blind Rams Choke Ln. Valves HCR Valves Kill Line Valves Check Valve Quan. Test Press. P/F 1 250/3000 P 250/3000 P 250/3000 P 250/3000 P 250/3000 P 250/3000 P 250/3000 P N/A MUD SYSTEM: Visual Trip Tank OK =it Level Indicators OK Flow Indicator OK Meth Gas Detector OK H2S Gas Detector OK Alarm OK OK OK OK . OK ' FLOOR SAFETY VALVES: Upper Kelly / IBOP Lower Kelly / IBOP Ball Type Inside BOP Test Quart. Pressure P/F 1 0 250/3000 P 250/3000 P 250/3000 F/P 250/3000 P CHOKE MANIFOLD: No. Valves No. Flanges Manual Chokes Hydraulic Chokes 14 Test Pressure P/F 250/30O0 P 28 250/3000 P 1 P Functioned Functioned ACCUMULATOR SYSTEM: System Pressure Pressure After Closure 200 psi Attained After Closure System Pressure Attained Blind Switch Covers: Master: Nitgn. Btl's: 3000 1300 minutes 22 sec. 2 minutes 27' sec. OK Remote: OK 5 @ 2300 Psi Psig. TEST RESULTS Number of Failures: 1 ,Test Time: 3.0 Hours. Number of valves tested 23 Repair or Replacement of Failed Equipment will be made within 0 days. Notify the Inspector and follow with Written or Faxed verification to the AOGCC Commission Office at: Fax No. 276-7542 Inspector North Slope Pager No. 659-3607 or 3687 If your call is not returned by the inspector within 12 hours please contact the P. I. Supervisor at 279-1433 REMARKS: The floor valve failed it was shopped for repair and the backup valve was tested and placed in service Distribution: orig-Well File c- Oper./Rig c- Database c - Trip Rpt File c- Inspector STATE WITNESS REQUIRED? YES X' NO 24 HOUR NOTICE GIVEN YES X NO Waived By: Witnessed By: Chuck $cheve FI-021L (Rev. 12/94) A9WKCOEE.XLS MEMORANDUM TO: State of Alaska Alaska Oil and Gas Conservation Commission DATE: March 12, 1997 THRU: BlairWondzell, ~ FILE NO: P. !. Supervisor ~'/~' FROM: Lou Grimaldi,~,,~. SUBJECT: Petroleum Ins~)ector E9WJCKEE.DOC Diverter inspection Doyon rig #141 Arco well Tarn #.4 PTD 97-25 Wednesday, March 12, 1997: ! traveled to the Arco exploratory well Tarn #4 to witness the Diverter function test on Doyon rig #141 which was preparing to drill surface hole. The Diverter assembly was nearly assembled when I arrived. I made a cursory inspection of the rig which was in good-shape. The 16 inch knife valve used on the vent line operated quickly and was open well before the annular closed. The annular had a closure time of 20 seconds. The accumulator had a recharge time of 2 minutes 30 seconds and appeared to be in good shape. The gas detection system was calibrated and tested. I walked the vent line and found a good solid construction. The line terminated 92 feet from the sub-base of the rig next to a snow bermed area that will be used for cuttings containment. SUMMARY: I witnessed the Diverter function test on Doyon rig #141. No failures noted. Attachments: E9WJCKEE.XLS cc,; Mike Zanghi (Kuparuk drilling) NON-CONFIDENTIAL STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION Diverter Systems Inspection Report 9N R. Drlg Contractor: Doyon Operator: Arco Alaska Inc Well Name: Tarn #-4 Location: Sec. 1 T. Operation: Development Rig No. 141 PTD # Oper. Rep.: Bill Penrose Rig Rep.: Mike Drody 7E Merdian Umiat 97-25 Date: Exploratory: Rig Ph. # 3/12/97 X 263-3101 TEST DATA MISC. INSPECTIONS: Location Gen.: P Housekeeping: P Reserve Pit: N/A Well Sign: (Gen.) Drlg. Rig: Flare Pit: DIVERTER SYSTEM INSPECTION: Diver[er Size: Diver[ Valve(s) Full Opening: Valve(s) Auto & Simultaneous: Vent Line(s) Size: Vent Line(s) Length: Line(s) Bifurcated: Line(s) Down Wind: Line(s) Anchored: Turns Targeted / Long Radius: 2O P P 16 ~ 120 ,- N/A P P N/A P P N/A in. in. ACCUMULATOR SYSTEM: Systems Pressure: 3000 Pressure After Closure: 2000 200 psi Attained After Closure: min. Systems Pressure Attained: 2 min. Nitrogen Bottles: Five Bottles @ 2350 33 3O MUD SYSTEM INSPECTION: Light Alarm Trip Tank: P P Mud Pits: P P Flow Monitor: P P GAS DETECTORS: Light Alarm Methane P* P Hydrogen Sulfide: P* P psig psig sec. sec. psig DIVERTER SCHEMATIC S,P, Camp :PipeS hed North Cuttings Berm Pits Wind (calm) Non Compliance Items none Repair Within N/A Day (s) And contact the Inspector @ 659-3607 Remarks: Good rigup. H2S and Methane detectors operational but due for calibration Distribution orig. - Well File c- Oper/Rep c- Database c - Trip Rpt File c- Inspector AOGCC REP.: Louis R. Grimaldi OPERATOR REP.: Bill Penrose DVTRINSP.XLT (REV. 1/28/97) L.G. E9WJCKEE.XLS Report prepared 3/17/97 ALASKA OIL AND GAS CONSERVATION COMMISSION TONY KNOWLE$, GOVERNOR 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 February t 9, 1997 _ Mike Zanghi, Drill Site Develop Supv ARCO Alaska, Inc. P O Box 100360 Anchorage, AK 99510-0360 Re: Tam No. 4 ARCO Alaska, Inc. Permit No: 97-25 Sur. Loc. lll9'FNL, 509'FWL, Sec. 1, T9N, R7E, UM Btmhole Loc. 1119'FNL, 509'FWL, Sec. 1, T9N, R7E, UM Dear Mr. Zanghi: Enclosed is thc approved application for pcrrnit to drill thc above referenced wcll. The permit to drill does not cxcmpt you from obtaining additional permits required by laxv from other governmental agencics, and docs not authorize conducting drilling operations until all other required permitting &terminations are made. A weekly status report is required from the time the well is spudded until it is suspended or plumed and abandoned. The report should be a generalized synopsis of the week's activities and is exclusively for thc Commission's internal usc. Blowout prevention equipment (BOPE) must be tcsted in accordance w/th 20 AAC 25.035. Sufficient notice (approximatcly 24 hours) of the BOPE test performed before drilling below the surface easing shoe must bc given so that a reprcsentativc of the Commission may witncss the test. Notice may be given by contacting the Commission petroleum field inspcctor on the North Slope pager at 659-3607. ChairmanX~ ~ dlffEnclosures CC: Dcpartmcnt of Fish & Game, Habitat Section w/o cncl. Department of Environmental Conservation vdo encl. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION 3001 Porcupine Drive Anchorage Alaska 99501-3192 THE APPLICATION OF ARCO ) ALASKA, INC. for an order granting ) an exception to spacing requiremems of ) Title 20 AAC 25.055 to provide for the ) drilling of the ARCO Tam No. 4 ) exploratory oil well. ) Conservation Order No. 388 ARCO Alaska Inc. Tam No. 4 February 11, 1997 IT APPEARING THAT: . ARCO Alaska, Inc. submitted an application dated January 17, 1997 requesting exception to 20 AAC 25.055(a)(1) to allow drilling the ARCO Tam No. 4 exploratory oil well closer than 500 feet to a drilling unit boundary. . Notice of hearing was published in the Anchorage Daily News on January 18, 1997 pursuant to 20 AAC 25.540. 3. No protests to the application were received. FINDINGS: le The ARCOTam No. 4 well as proposed will be a straight hole drilled from a surface location within 250' of the following location, 1119' from the north line and 509' from the west line of Section 1, TgN, R7E, Umiat Meridian. 2. Offset owners BP Exploration (Alaska), Inc., have been duly notified. 4~ An exception to 20 AAC 25.055(a)(1) is necessary to allow drilling of this well. CONCLUSION: Granting a spacing exception to allow drilling of the ARCO Tam No. 4 well as proposed will not result in waste nor jeopardize correlative rights. Conservation Order No. February 11, 1997 NOW, THEREFORE, IT IS ORDERED: ARCO Alaska, Inc.'s application for exception to 20 AAC 25.055 for the purpose of drilling the Tarn No. 4 well is approved as proposed. DONE at Anchorage, Alaska and dated February 11, 1997 David W. Johnston, Alaska and Gas ~n Commission Mary C. Marst(b,~um,~TL~mmissioner Alaska Oil and Gas~-~onservation Commission AS 31.05.080 provides that within 20 days after receipt of written notice of the entry of an order, a person affected by it may file with the Commission application for rehearing. A request for rehearing must be received by 4:30 PM on the 23rd day following the date of the order, or next working day if a holiday or weekend,, to be timely filed. The Commission shall grant or refuse the application in whole or in part within 10 days. The Commission can refuse an application by not acting on it within the 10-day period. An affected person has 30 days from the date the Commission refuses the application or mails (or otherwise distributes) an order upon rehearing, both being the f'mal order of the Commission, to appeal the decision to superior Court. Where a request for rehearing is denied by nonaction of the Commission-_ the 30-day period for appeal to Superior Court runs from the date on which the request is deemed denied (i.eT, ;10th day after the application for rehearing was filed). STATE OF ALASKA ALA~, ';A OIL AND GAS CONSERVATION COMMIS~,. PERMIT TO DRILL 20 AAC 25.005 la. Type of Work Drill X Redrill [] lb Type of Well Exploratory X Stratigraphic Test [] Development Oil Re-Entry [] Deepen [] Service [] Development Gas [] Single Zone X Multiple Zone [] 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool ARCO Alaska, Inc. RKB 132' feet 3. Address 6. Property Designation Tarn Exploration P. O. Box 100360, Anchorage, AK 99510-0360 ADL 375073, ALK 4297 4. Location of well at surface 7. Unit or property Name 1 1. Type Bond (see 20 AAC 25.025) 1119' FNL, 509' FWL, Sec. 1, T9N, R7E, UM N/A Statewide At top of productive interval (@ TARGET ) 8. Well number Number 1119' FNL, 509' FWL, Sec. 1, T9N, RTE, UM Tarn #4 #U-630610 At total depth 9. Approximate spud date Amount 1119' FNL, 509' FWL, Sec. 1, T9N, R7E, UM 2/25/97 $200,000 1 2. Distance to nearest 13. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) property line Tarn #3 6100' MD 1119 ~ TD feet 2 mile feet 2560 6100' TVD feet 16. To be completed for deviated wells 17. Anticipated pressure (see 20 AAC 25.035(e)(2)) Kickoff depth N/A feet Maximum hole angle N/Ao Maximum surface 1245 psig At total depth (TVD) 2854 psig 18. Casing program Setting Depth size Specifications Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD tinclude stage dataI 24" 16" 62.5# H-40 Weld 80' 35' 35' 115' 115' 228 Sx Arcticset I 12.25" 9.625" 40.0# L-80 BTC 2465' 35' 35' 2500' 2500' 990 Sx ClassG HF-ERW 8.5" 7" 26.0# L-80 BTCMOB 6065' 35' 35' 6100' 6100' 313 Sx ClassG HF-ERW Top 500' above Kuparuk 19. To be completed for Redrill, Re-entry, and Deepen Operations. Present well condition summary Total depth: measured feet Plugs (measured) true vertical feet Effective depth: measured feet Junk (measured) true vertical feet Casing Length Size Cemented Measured depth True Vertical depth Structural Conductor Surface Intermediate LPirn°edrUCti°n0 RIG INA L Perforation depth: measured true vertical 20. Attachments Filing fee X Property plat [] BOP Sketch X Diverter Sketch X Drilling program X Drilling fluid program X Time vs depth plot ~ Refraction analysis [] Seabed report [] 20 AAC 25.050 requirements X 21 .""'-..,.I hereby certify that th-"~oregoing is true and correct to the best of my knowledge S igned~~ ~'~ ~./~JCf.~ ~,~.~ L Title D rilISiteDe vel op. Supv. Date ~-/,~/~ i'~ ~ v Commission Use Only ' Permit~_Number I APl nurser _ __ I Approval date,-/ W I M--lC-- ¢'1] See cover letter ,Orother requirements Conditions of approval Samples required ,~ Yes [] No Mud logrequired J~ Yes [] No Hydrogen sulfide measures ~ Yes ~ No Directional survey required ~ Yes [] No Required working pressure for BOPE ~ 2M [~. 3M [] 5M [-] 10M ['~ 15M Other: Origins! Signed By David W. Johnston byorder of Approved by Commissioner the commission Date?~,. Form 10-401 Rev. 7-24-89 Submit in triplicate CIRQUE #2 MUD WEIGHT DOYON 9 MARCH 1992 13-3/8" SURF CSG 880' -1000 -2000 9-5/8" INTER CSG 2251' -3000 -4000 -5000 -6000 -7000 -8000 8 9 10 11 12 13 14 MUD WEIGHT (LB/GAL) CEIW D FJ 1/14/97 FEB 3 1997 Alaska Oil & Gas Con~. Comrn]~,sJg~'~ Anchorag-?, 1000 2000 3000 iii ~ 4000 5000 6OOO 70O0 10 TARN #1 ITT 100 ,<ECEIVED 1000 ITT MSEC/FT TARN #1 PORE PRESSURE, FRAC GRADIENT SONIC LOG INTERPRETATION -1000 -2O00 9-5/8" SURF CSG 2398' -3000 · I" -4000 i=, O. LI,i -5000 7' CASING AT 5232' -6000 -7000 -8000 10 11 12 13 MUD WEIGHT {LB/GAL) 14 15 16 17 FJ 1/14/97 18 -1000 -2000 9-5/8' SURF CSG 2398' -3000 "1- -4000 -5000 7' CASING AT 5232' -6000 -7000 -8000 TARN #1 MUD WEIGHT DOYON 14 JANUARY 1992 ~....~....~ ..... ~ ..... iiiiiiiiiilfiiiiiiill iiii[iiii== .... ~ ~- ~'- i iilI I i .......... i ......... i .... ... ......... : ! .... ! .......... .:. ............. ] ..... I ....................................................... ........................................... '~ : ~ . , : ~ = iiii ..... [iiiiiiiilIiiii~ iiii[iiii'iiiii!,i i' iii i i?i[i"FiiiIlii? ...... ~ ..... I~""'F'''~. ~ ..... ~ ........... ..... :,._?'~ ..... ..... i .................. ~ i__~ l ..... ~. I~ ..... ~: .......... ..... ~---1, ..... .... :__~ ..... ..._.__l ...................... ! .......... J ..... J ..... L....,- ..... [ .......... I ......... .: ..... L_.._J J / ~9-5/8' -----~CASINGi CEMENTEDi ..... J---i ..... [----:'TO ..... 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'.....; ............................ , ........................ ...... ~ .... , ......................... ~ ..... : ........... : .......... ~ ..... ~ .... ] .... L....~ ..... ~ ..... ..... ~ .... ~_.~..~ ..... ~ ..... ~ ......... ~ ..... L....~ ..... ~ ..... ~ ..... } ..... ,..~ ..... ~ .................. ~ ......... ~.EST~ATEDCOST: ~2,~OO,OOO- -1000 -2000 9-5/8" SURF CSG 2521' -3000 -4000 -5000 -6000 -7000 -8000 8 9 10 11 12 13 14 MUD WEIGHT (LB/GAL) FEB ~'~,,19~7 Alaska Oil & (]as Con~. Com~_J~i~f~ Anchora.9~ WEST SAK 20 MUD WEIGHT PARKER 141 FEBRUARY 1981 -1000 -2O0O 10-3/4' SURF CSG 2412' -3000 IJJ -4000 -5000 -6000 -7000 -8000 8 9 10 11 12 13 MUD WEIGHT (LB/GAL) I~EC~I'~D FEB ~ 1~97,,4,,7 Alaska Oil & Gas Cons. Commiss~,r.~ Anohorago 16 ARCO Alaska, Inc. Post Office Box 100360 Anchorage, Alaska 99510-0360 Telephone 907-276-1215 January 31, 1997 Alaska Oil And Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 (907) 279-1433 ORIGINAL Re: Application for Permit to Drill ARCO Tarn #4 Dear Sirs: ARCO Alaska, Inc. hereby applies for a Permit to Ddll an onshore exploratory well, the Tam #4, located approximately nine miles southwest of the Kuparuk River Unit's 2M Pad. This well will be acessed via ice road originating at 2M Pad, drilled using Doyon Rig #141, tested and permanently abandoned prior to spring breakup. Attached find the information required by 20 ACC 25.005 (c) for your review. Other pertinent information attached to this application is confidential data including the following: 1) Pressure information as required by 20 ACC 25.035 (d) (2). 2) Prediction of overpressured strata as required by 20 ACC 25.033 (e). Please note that ARCO does not anticipate the presence of H2S in the formations to be encountered in this well. However, there will be H2S monitoring equipment operating as is the usual case while drilling wells in and near the Kuparuk field. If you have any questions or require any further information, please contact me at 265-6434 or Mike Zanghi (ARCO Kuparuk Drill Site Development Supervisor) at 265-6206. Silcerely~ ~ J~aam~es~ra~nt~am'~~¢''''¢'~ Senior Drilling Engineer Attachments CC: Tarn #4 Well File Steve Porter ATO-1396 James Winegarner ATO- 1496 RECEIVED FEB 1997 Alaaka 0tl & Gas Cons. C01~mission Anchorage ARCO Alaska Inc. is a subsidiary of Atlantic Richfield Company GENERAL DRILLING PROCEDURE ARCO Tarn ¢4 10. 11. 12. 13. 14. Move in and rig up Doyon ¢141 over pre-installed 16" conductor. Install diverter system. Drill 12-1/4" hole to 9-5/8", 40¢, L-80, BTC to surface casing point.- Run and cement 9-5/8" casing. Install and test BOPE to 3000 psi. Test casing to 2000 psi.. Drill out cement and 10' of new hole. Perform leak off test. Drill 8-1/2" hole to TD. Core as necessary. Run open hole evaluation logs. If the well is to be tested, run 7", 26¢, L-80, BTC-M production casing. (If significant hydrocarbon zones are present above the Tarn interval, sufficient cement will be pumped for isolation in accordance with Rule 20 AAC 25.030. Alternatively, if significant hydrocarbon zones occur within 200' TVD of the surface casing shoe, cement will be down squeezed in the annular space between the surface and production casing after the primary cement job is completed.) If the well will not be tested, P&A it per AOGCC regs. Complete the well with 3-1/2", 9.3¢, Lo80, EUE 8rd tubing. ND BOPE. NU upper tree and test to 5,000 psi. Shut in and secure well. RDMO Doyon ¢141. Hook up well for flow testing to surface tanks. Produced fluids to be trucked to Kuparuk production facilities. Test zones as appropriate, abandoning each using a CTU. When complete, plug and abandon the well as per AOGCC regulations and RDMO CTU. Thoroughly clean location and block off access ice road. Tarn #4 Depth vs Time -1000 -2000 _c -3000 ~ -4000 -5000 -6000 -7000 Days Tarn #4 WELLBORE SCHEMATIC and CEMENT DESIGN Conductor Cb ~ 1 ~' RKB 12-1/4" H01e 9-5/8" Surface Casing Cb ~ 2800' MD-RKB Base Permafrost & Stage Collar ¢b1250' MD Top W. Sak ~ 1 800' MD TOC ¢b 4500' M D 8-1/2" H01e 7" Production Casing ~ 61 00' MD-R~ Casing Size / Hole Size: Depth: Top of Cement: Excess Calculated: 16"/20" 135' MD-RKB Surface 100% Volume Calc: (135')(0.7855 cu-ft/ft)(2): (212 cu-ft)/(0.93 cu-ft/sk) = 228 sacks ARCTICSET I Slurry Volume 212 cu-ft ARCTICSET I Slurry Weight 15.7 ppg Slurry Yield 0.93 cu-ft/sk Casing Size / Hole Size: 9 5/8" / 12 1/4" Depth: 2,800' MD Top of Cement: Suflace Stage Collar: 1,250' MD Excess Calculated: 45% Stage 1; 400% Stage 2 BHT (Static): 70°F BHT (Circ): 70°F Stage 1: Volume (2,800'-1,250')(0.3132 cu-ft/ft)(1.45) = (704 cu-ft)/(1.16 cu-ft/sk)= 607 sacks (+ 28 sxs for shoe jt.) System: 635 sacks Class G cement + 1% S1 (CaCI2) + 0.3% D65(dispersant) + 0.2% D46 (defoam) + 1/4 #/sk D29 (celloflake) Slurry Volume 737 cu-ft Slurry Weight 15.8 ppg Slurry Yield 1.16 cu-ft/sk Thickening Time 3.5 - 4.5 hours Stage 2: Volume (1,250')(0.3132 cu-ft/ft)(4) = (1,566 cu-ft)/(4.41 cu-ft/sk)= 355 sacks System: 355 sacks Class G + 3.5% D44(NaCI) + 30% D53(Gyp) + 50% D124(spheres) + 1.5% S1 (CaCI2) + 1.5% D79(extender) + 0.2% D46(defoam) Slurry Volume .~F_CF. IV~D,566cu-ft Slurry Weight 10.5 ppg ....... 4.41 cu-ft/sk Slurry Yield ~"L~B ~',~ ]99 ,~ 6.0+ hours Thickening Time Al:lO!J0! ;.'-' Li.~' Casing Size / Hole Size: 7" / 8 1/2" Depth: 6,100' MD Top of Cement: 4,500' MD Excess Calculated: 75% (depending on est. OH) BHT (Static): 160°F BHT (Circ): 130°F Volume Calc: (6,100' - 4,500')(0.1268 cu-ft/~t)(1.75) = (355 cu-ft)/(1.19 cu-ft/sk) = 298 sacks (+15 sxs for shoe jr.) 313 sacks Class G cement + 2 gps DC00(latex) + 0.1 gps D135(stabilizer) + 0.1 gps D47 (defoam) + 3% D53(Gyp) + 0.7% D65(dispersant) + 0.15% D800(retarder) Slurry Volume 373 cu-ft Slurry Weight 15.8 ppg Slurry Yield 1.19 cu-ft/sk Thickening Time 3.5 - 4.5 hours DRILLING FLUID PROGRAM ARCO Tarn #4 Spud to 9-5/8" surface casing Density 1 0 PV 20-26 YP 15-25 Viscosity 50-70 Initial Gel 5-1 5 10-Min. Gel 15-40 APl Filtrate 10-1 2 pH 9.5-10 % Solids ~ 10% 7" Production casino 8.6-10.8 16-20 15-20 30-40 4-6 6-8 8~10 9.5-10 4-7% Drillino Fluid System: 3 ea Derrick FIo-Line Cleaners Pioneer Model S2-12 Desander Tri-FIo 'Low Profile' Desilter Alpha-Laval Model DMNX 418 Centrifuge Pit Level Indicator (w/visual and audio alarms) Trip Tank Fluid Flow Sensor 8 ea Brandt pit mixers Drilling Area Risks: Examination of the four nearest offset wells, Tarn #1, Cirque #2, Bermuda #1 and West Sak #20 reveal no subsurface hazards such as abnormal pressure or lost circulation zones. For the nearest offset, Tarn #1, sonic log interval transit times were plotted and pore pressure and fracture gradient curves derived. Again, no indications of abnormal pressure or weak formations were seen. The mud weights planned for Tarn #4 are conservatively based on those used during drilling of the offsets, though the Tarn #1 ITT plot implies lower mud weights would be adequate. The 9-5/8" surface casing shoe will be tested to leak-off upon drilling 10 foot of new formation. EECEIVED FEB ~ ~o~ ARCO Tarn #4 PRESSURE INFORMATION AND CASING DESIGN (per 20 AAC 25.005 (c) (3,4) and as required in 20 AAC 25.035 (d)(2)) DISCUSSION The following presents the data used for calculation of the anticipated sudace pressures (ASP) used for the design and drilling of Tarn #4. Casing 12~,'t~ Pore Casing Setting Frac~ Pressure Pore ASP Size Depth ,,Gradient Gradient Pressure Drilling (inches} (fi;, TVD) (ppg) (ppg) (psi) (psi) 16 115 1 1 8.5 50 N/A 9-5/8 2500 1 3 8.5 1105 1 415 7 6100 16.0 9 2854 N/A Procedure for calculatina Anticipated Sudace Pressure (ASP): ASP is determined as the lesser of 1) sudace pressure at breakdown of the formation at the casing seat with a gas gradient to the surface, or 2) formation pore pressure at the next casing point less a gas gradient to the surface as follows: 1) ASP = [(FG x 0.052)- 0.11]D where: ASP: Anticipated Surface Pressure in psi FG: Fracture Gradient at the casing seat in lb/gal 0.052: Conversion from lb/gal to psi/ft 0.11 = Gas gradient in psi/ft D = True vertical depth of casing seat in ft RKB OR 2) ASP = FPP- (0.11 x D) where: FPP = Formation Pore Pressure at the next casing point ASP Calculations 1. Drilling below conductor casing (16") ASP : [(FG x 0.052) - 0.11]D [(11x0.052)-0.11]x 115 53 psi OR ASP = FPP- (0.11 x D) 1105 - (0.11 x 2500) 830 psi ARCO Tarn #4 PRESSURE INFORMATION AND CASING DESIGN (per 20 AAC 25.005 (c) (3,4) and as required in 20 AAC 25.035 (d)(2)) DISCUSSION The following presents the data used for calculation of the anticipated surface pressures (ASP) used for the design and drilling of Tarn #4. Casing ~ Pore '~ Fracture Pressure Pore ASP Casing Setting ~, Size Depth ~,, Gradient Gradient Pressure Drilling (inches) (ft, TVD) ~ (ppg) (ppg) (.psi) (psi) 16 115 01.""11 8.5 50 N/A 9-5/8 2500 "~ f!3 8.5 1105 1415 7 6100 ~~,,,'16.0 9 2854 N/A Procedure for calculating Anticipated Sudace Pressure (ASP)' ASP is determined as the lesser of 1) surface pressure at breakdown of the formation at the casing seat with a gas gradient to the surface, or 2) formation pore pressure at the next casing point less a gas gradient to the surface as follows' 1) ASP = [(FG x 0.052)- 0.11]D where' ASP = Anticipated Surface Pressure in psi FG = Fracture Gradient at the casing seat in lb/gal 0.052 = Conversion from lb/gal to psi/ft 0.11 = Gas gradient in psi/ft D = True vertical depth of casing seat in ft RKB OR 2) ASP: FPP- (0.11 x D) where: FPP = Formation Pore Pressure at the next casing point ASP Calculations 1. Drilling below conductor casing (16") ASP = [(FG x 0.052) - 0.11]D =[(11x0.052)-0.11]x115 = 53 psi OR ASP = FPP- (0.11 x D) = 1105 - (0.11 x 2500) = 830 psi 2. Drilling below surface casing (9-5/8") ASP = [(FG x 0.052) - 0.11]D = [(13 x 0.052) - 0.11] x 2500 = 1415 psi OR ASP = FPP- (0.11 x D) = 2854 - (0.11 x 6100) = 2180 psi Casing Pedormance Properties Size Weight Grade (in) (Ib/ft} Cnxn Internal Collapse Ten~il Strength Yield Resistance Joint Body (psi) (.psi) ( 1000 lbs) 1 6 62.58 B 9-5/8" 40 L-80 P E B Conductor Casing BTC 5750 3090 947 916 7 26 L-80 BTC-M 7240 541 0 641 604 Casing Setting Depth Rationale 16"-115' RKB Conductor casing to provide sufficient anchor and fracture gradient for diverter system. 9-5/8"-2500' RKB Surface casing to provide good anchor for BOPE and sufficient fracture gradient and well control while drilling to next casing setting point. 7"-6100' RKB Production casing to cover all open hole and all previously set casing to allow comprehensive testing of the well. This casing will not be set if logs indicate the well is a dry hole. ARCO Tarn #4 PRESSURE ANALYSIS AND PREDICTION (per 20 ACC 25.005 (c) (7) and 20 ACC 25.033 (e)) DISCUSSION: An analysis and prediction of overpressured strata was performed for the ARCO Tarn #4 well as required by AOGCC regulations. ARCO does not expect to encounter abnormal pressure from any zones. There are no shallow hazards (such as shallow gas) expected at Tarn #4. The prediction is based on an evaluation of offset wells Tarn #1, Cirque #2, Bermuda #1 and West Sak #20 and seismic interpretation. Attached are the following: Mud weight versus depth graph for these wells. Sonic Icg interval transit time analysis for Tarn #1. Pore pressure, frac pressure & anticipated mud weight graph. Seismic Reflection Analysis on Line 300 at CDP 385 RECEIVED FEB 1997 Alaska Oil & (~a~ Con~. Commi¢~i~r~ Anchorage DIVERTER SCHEMATIC DOYON RIG 141 HYDRIL MSP 21-1/4" 2000 psi Annular 21-1/4" 2000 psi 16" Outlet Spool (2) 62#, PEB Conductor Flowline 16", 200 psi Hydraulic Knife Valve 16" OD ~ Diverter Line BOP SCHEMATIC DOYON RIG #141 13-5/8", 5,000 PSI I I I I I 4 5 I 6 I ' I See listing of individual components on following page Revised 12/22/95 ARCO Tarn #4 DOYON 141 13-5/8, 5,000 PSI BOP COMPONENTS Diverter System: 1. 21-1/4", 2000 psi WP, Shaffer MSD annular preventer 2. 21-1/4", 2000 psi WP diverter spool with one 16" outlet. 3. 16", 2000 psi WP hydraulic knife valve on diverter outlet. BOP Stack: 4. 13-5/8", 5000 psi WP, Hydril Type GK annular preventer with companion flange to bell nipple. 5. Double 13-5/8", 5000 psi WP, Hydril Magnum blowout preventer fitted with pipe rams on top and blind rams on bottom. 6. Single 13-5/8", 5000 psi WP, Hydril MPL blowout preventer fitted with pipe rams. 7. 13-5/8", 5000 psi WP drilling spool with two 3", 5000 psi WP outlets Choke Valves: 8. 3" 5000 psi WP Shaffer gate valve with hydraulic actuator. 9. 3" 5000 psi WP OCT manual gate valve. Kill Valve: 1 0. 3" 5000 psi WP OCT manual gate valve. 11. 3" 5000 psi WP Shaffer gate valve with hydraulic actuator RECEIVED FEB 3 At~chor~¢ DEPTH ( D~kJm ~e~b MSL~ 4000 6OOO 8000 14 -80 2000 4000 6000 8000 WELL PERMIT CHECKLISTco .Y FIELD & POOL /~/~ ~ INIT CLASS GEOL AREA PROGRAM: ex~dev [] redrl[] serv[] wellbore seg[] ann disp para req[] ADMINISTRATION 1. Permit fee attached .................. ~ Y_~ N 2. Lease number appropriate ............... .~ N 3. Unique well name and number .............. 4. Well located in a defined pool ............. 5. Well located proper distance from drlg unit boundary. . N 6. Well located proper distance from other wells ..... N 7. Sufficient acreage available in drilling unit ..... N 8. If deviated, is wellbore plat included . . ./~,~ .... Y N 9. Operator only affected party .............. ~ N 10. Operator has appropriate bond in force ........ ~ N 11. Permit can be issued without conservation order .... ~ N 12. Permit can be issued without administrative approval. . .(~ N 13. Can permit be approved before 15-day wait ....... ~ N ENGINEERING 14. Conductor string provided ............... ~N 15. Surface casing protects all known USDWs ........ ~ N 16. CMT vol adequate to circulate on conductor & surf csg. .~ N 17. CMT vol adequate to tie-in long string to surf csg . . . Y ~ 18. CMT will cover all known productive horizons ...... ~ N 19. Casing designs adequate for C, T, B & permafrost .... ~ N 20. Adequate tankage or reserve pit ............. N 21. If a re-drill, has a 10-403 for abndnmnt been approved. ~ 22. Adequate wellbore separation proposed .......... ~ N 23. If diverter required, is it adequate .......... ~ N 24. Drilling fluid program schematic & equip list adequate .~ N 25. BOPEs adequate .................... ~) N 26. BOPE press rating adequate; test to ~~ psig~ N 27. Choke manifold complies w/API RP-53 ~ . .~ N 28. Work will occur without operation shutdown ....... ~ N 29. Is presence of H2S gas probable ............ .~ N GEOLOGY 30. Permit can be issued w/o hydrogen sulfide measures .... Y_N~_~/ 31. Data presented on potential overpressure zones .... Y~ N 32. Seismic analysis of shallow gas zones ......... ~ N 33. Seabed condition survey (if off-shore) . . ./~/~ .... Y N 34. Contact name/phone for weekly progress reports .... ~ N [exploratory only] REMARKS ,-- GEOLOGY: ENGINEERING: COMMISSION: JD~- m Comments/Instructions: HOW/dlf- A:\FORMS\cheklist rev 01/97 ',, 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 the readability 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. * ALASKA COMPUTING CENTER * ....... SCHLUMBERGER COMPANY NAME : ARCO ALASKA, INC. WELL NAME : TARN #4 FIELD NAME : WILDCAT BOROUGH : NORTH SLOPE STATE : ALASKA API NUMBER : 50-103-20249-00 REFEREa~CE NO : 97188 * ALASKA COMPUTING CENTER . ****************************** . ............................ * ....... SCHLUMBERGER ....... * ............................ COMPANY NAME : ARCO ALASKA, INC. WELL NAME : TARN #4 FIELD NAME : WILDCAT BOROUGH : NORTH SLOPE STATE : ALASKA API NUMBER : 50-103-20249-00 REFERENCE NO : 97188 LIS .Tape Verification Listing Schlumberger Alaska Computing Center 15-MAY-1997 09:49 PAGE: **** REEL HEADER **** SERVICE NA~E : EDIT DATE : 97/05/15 ORIGIN : FLIC REEL NA~iE : 97188 CONTINUATION # : PREVIOUS REEL : COf~MENT : ARCO ALASKA INC, TARN #4, TARN ,API #50-103-20249-00 **** TAPE HEADER **** SERVICE NAME : EDIT DATE : 97/05/15 ORIGIN : FLIC TAPE NAME : 97188 CONTINUATION # : 1 PREVIOUS TAPE COMMENT : ARCO ALASKA INC, TARN #4, TARN , API #50-103-20249-00 TAPE HEADER Wi 1 dca t OPEN HOLE WIRELINE/MWD LOGS WELL NAME: API NUMBER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WIT1FESS : SURFACE LOCATION RUN1 97188 E. Bartz CAMPAIGN SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION (FT FROM MSL O) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD 1ST STRING 2ND STRING Tarn #4 501032024900 ARCO Alaska, Inc. SCHLUMBERGER WELL SERVICES 13 -MAY-97 RUN 2 RUN 3 1 9N 7E 510 1120 156.00 155.00 125.50 OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 8.500 9. 625 2195.0 LIS ?ape Verification Listing Schlumberger Alaska Computing Center 15-MAY-1997 09:49 3RD STRING PRODUCTION STRING Well drilled 15-MAR through 18-APR-97 with CDR only. Ail MWD data was collected in three bit runs. The well was wireline logged 19-MAR-97 with Platform Express and DSI. This is a special LDWG format tape with both MWD and Wireline data. $ $ PAGE: **** FILE HEADER **** FILE NAME : EDIT .001 SERVICE : FLIC VERSION · O01CO1 DATE · 97/05/15 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE NUFiBER: 1 EDITED OPEN HOLE (WIRELINE) MAIN PASS All tool strings; Depth shifted and clipped curves; all runs merged; no cased hole data. DEPTH INCREMENT: 0.5000 FILE SU~mIARY LDWG TOOL CODE SDN CNT DAS $ BASELINE CURVE FOR SHIFTS: NONE CURVE SHIFT DATA (MEASURED DEPTH) START DEPTH STOP DEPTH 6126.0 2097.0 6116.0 2104.0 6034.0 2186.0 BASELINE DEPTH .............. $ MERGED DATA SOURCE LDWG TOOL CODE $ REMARKS: .......... EQUIVALENT UNSHIFTED DEPTH SDN CNT DAS RUN NO. PASS NO. MERGE TOP MERGE BASE THIS IS THE CLIPPED AND 0.5' DECIMATED DATA FROM THE PLATFORM EXPRESS/DSI LOGGED 19-MAR-97. NO DEPTH SHIFTS WERE APPLIED TO THIS DATA, AS THE PEXGR IS THE DEPTH STANDARD FOR THIS WELL. $ LIS FORMAT DATA LIS .Tape Verification Listing Schlumberger Alaska Computing Center 15-MAY-1997 09:49 PAGE: ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 88 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 11 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 0 ** SET TYPE - CHAN ** NA~E SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE CLASS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT O0 000 O0 0 1 1 1 4 68 0000000000 SP AIT MV O0 000 O0 0 1 1 1 4 68 0000000000 GR SDN GAPI O0 000 O0 0 1 1 1 4 68 0000000000 TENS SDN LB O0 000 O0 0 1 1 1 4 68 0000000000 DEVI SDN DEG O0 000 O0 0 1 1 1 4 68 0000000000 CNTC CNT CPS O0 000 O0 0 1 1 1 4 68 0000000000 CFTC CNT CPS O0 000 O0 0 1 1 1 4 68 0000000000 FCNTCNT CPS O0 000 O0 0 1 1 1 4 68 0000000000 NCNTCNT CPS O0 000 O0 0 1 1 1 4 68 0000000000 CRAT CNT O0 000 O0 0 1 1 1 4 68 0000000000 NRAT CNT O0 000 O0 0 1 1 1 4 68 0000000000 NPHI CNT PU-S O0 000 O0 0 1 1 1 4 68 0000000000 TNPH CNT PU-S O0 000 O0 0 1 1 1 4 68 0000000000 DTCO DAS US/F O0 000 O0 0 1 1 1 4 68 0000000000 DTSM DAS US/F O0 000 O0 0 1 1 1 4 68 0000000000 CALI SDN IN O0 000 O0 0 1 1 1 4 68 0000000000 DRHO SDN G/C3 O0 000 O0 0 1 1 1 4 68 0000000000 PEF SDN BN/E O0 000 O0 0 1 1 1 4 68 0000000000 RHOB SDN G/C3 O0 000 O0 0 1 1 1 4 68 0000000000 MSFL SDN OH~ O0 000 O0 0 1 1 1 4 68 0000000000 MINVSDN OHMM O0 000 O0 0 1 1 1 4 68 0000000000 ~iNOR SDN OH~ff4 O0 000 O0 0 1 1 1 4 68 0000000000 LIS ~Tape Verification Listing Schlumberger Alaska Computing Center 15-MAY-1997 09:49 PAGE: ** DATA ** DEPT. 6150.000 SP.AIT DEVI.SDN -999.250 CNTC. CNT NCNT. CNT -999.250 CRAT. CNT TNPH. CNT -999.250 DTCO.DAS DRHO.SDN -999.250 PEF. SDN MINV. SDN -999.250 ~VOR.SDN DEPT. 6000.000 SP.AIT DEVI.SDN 0.993 CNTC. CNT NCNT. CNT 2148.465 CRAT. CNT TNPH. CNT 33.359 DTCO.DAS DRHO.SDN 0.026 PEF. SDN MINV. SDN 4.524 ~iNOR.SDN DEPT. 5000.000 SP.AIT DEVI.SDN 0.000 CNTC. CNT NCNT. CNT 2045.926 CRAT. CNT TNPH. CNT 33.724 DTCO.DAS DRHO.SDN 0.045 PEF. SDN MINV. SDN 4.295 ~iNOR.SDN DEPT. 4000. 000 SP. AIT DEVI. SDN O. 000 CNTC. CNT NCNT . CNT 2019. 968 CRA T . CNT TNPH. CNT 35. 575 DTCO.DAS DRHO. SDN O. 007 PEF. SDN MINV. SDN 6.616 ~iNOR . SDN DEPT. 3000.000 SP.AIT DEVI.SDN 1.380 CNTC. CNT NCNT. CNT 1798.456 CRAT. CNT TNPH. CNT 43.144 DTCO.DAS DRHO.SDN -0.002 PEF.SDN MINV. SDN 3.326 ~iNOR.SDN DEPT. 2097.000 SP.AIT DEVI.SDN 1.031 CNTC. CNT NCNT. CNT -999.250 CRAT. CNT TNPH. CNT -999.250 DTCO.DAS DRHO.SDN -999.250 PEF.SDN MINV. SDN -999.250 ~iNOR.SDN -999.250 GR.SDN -999.250 CFTC. CNT -999.250 NRAT. CNT -999.250 DTSM.DAS -999.250 RHOB.SDN -999.250 3.938 GR.SDN 2306.961 CFTC. CNT 2.966 NRAT. CNT 95.124 DTSM. DAS 3.733 RHOB.SDN 3.878 7.625 GR.SDN 2179.594 CFTC. CNT 2.961 NRAT. CNT 93.691 DTSM. DAS 3.450 RHOB.SDN 3.645 14.375 GR.SDN 2169.703 CFTC. CNT 3.125 NRAT. CNT 106.024 DTSM. DAS 3.848 RHOB.SDN 5.682 22.625 GR.SDN 1968.171 CFTC. CNT 3.496 NRAT. CNT 113.895 DTSM. DAS 3.137 RHOB.SDN 2.960 -999.250 GR.SDN -999.250 CFTC. CNT -999.250 NRAT. CNT -999.250 DTSM. DAS -999.250 RHOB.SDN -999.250 -999.250 -999.250 -999.250 -999.250 -999.250 114.135 791.725 3.162 194.653 2.574 115.317 735.240 3. 016 184.207 2. 492 167.265 709.926 3.256 206.445 2.450 101.431 558.548 3.767 239.828 2.241 43.576 -999.250 -999.250 -999.250 -999.250 TENS. SDN FCNT. CNT NPHI. CNT CALI . SDN MSFL. SDN TENS. SDN FCNT. CNT NPHI. CNT CALI. SDN MSFL. SDN TENS. SDN FCNT. CNT NPHI. CNT CALI . SDN MSFL. SDN TENS. SDN FCNT. CNT NPHI. CNT CALI. SDN MSFL. SDN TENS.SDN FCNT. CNT NPHI.CNT CALI.SDN MSFL.SDN TENS.SDN FCNT. CNT NPHI.CNT CALI.SDN MSFL.SDN 3872.000 -999.250 -999.250 -999.250 -999.250 4212.000 683.534 32.899 8.663 4.679 3914. 000 656. 010 32. 929 9. 251 4.126 3668.000 644.116 35.208 8.680 5.932 3219.000 509.286 43.396 8.497 3.518 2776.000 -999.250 -999.250 -999.250 -999.250 ** END OF DATA ** LIS .Tape Verification Listing Schlumberger Alaska Computing Center 15-MAY-1997 09:49 PAGE: **** FILE TRAILER **** FILE NAlVlE : EDIT .001 SERVICE : FLIC VERSION : O01CO1 mATE · 97/05/15 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** FILE HEADER **** FILE NAME : EDIT .002 SERVICE : FLIC VERSION : O01CO1 DATE · 97/05/15 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : FILE HEADER FILE~ER: 2 EDITED MERGEDMWD Depth shifted and clipped curves; all bit runs merged. DEPTH INCREMENT: 0.5000 FILE SUmmARY LDWG TOOL CODE $ BASELINE CURVE FOR SHIFTS: GR CURVE SHIFT DATA (f~EAStTREDDEPTH) START DEPTH STOP DEPTH ..................... 2151.0 6146.0 BASELINE DEPTH 88888 0 6094 0 6059 5 6040 5 6037 5 6033 5 5993 0 5984 0 5972.5 5966.5 5955.0 5932.5 5926.5 5922.0 5910.5 5895.5 .......... EQUIVALENT UNSHIFTED DEPTH .......... 88883.5 6089.5 6055.0 6036.0 6033.5 6029.0 5989.0 5979.5 5967.5 5962.0 5950.5 5928.5 5922.5 5917.5 5906.0 5891.0 LIS .Tape Verification Listing Schlumberger Alaska Computing Center 5876.0 5871.0 5859.5 5792.5 5782.0 5750.0 5735.0 5709.5 5678.5 5663.5 5656.0 5642.0 5618.5 5582.5 5575.5 5549.5 5529.0 5518.5 5478.5 5447 0 5445 5 5443 0 5427 0 5404 5 5375 0 536O 0 5341 5 5266.5 5254.5 5208.5 5189.0 5169.0 5155.5 5126.5 4972.0 4911.5 4864.5 4841.5 4809.5 4734.5 4676.5 4648.0 4505.5 4454.0 4326.0 4298.0 4246.0 4209.5 4179.5 4168.5 4158.5 4110.0 4089.0 4007.5 3965.5 5871.5 5866.5 5854.0 5787.0 5777.0 5744.5 5729.5 5703.5 5672.5 5657.5 5651.0 5636.0 5612 0 5575 0 5567 5 5541 5 5521 5 5511 5 5471 5 5440.0 5438.5 5433.0 5418.0 5395.0 5366.0 5351.0 5332.5 5257.0 5245.5 5199.5 5184.0 5162.5 5147.0 5118.5 4965.0 4903.5 4857 5 4834 0 4801 5 4726 5 4669 0 4640 0 4497 5 4447 0 4319, 0 4290, 5 4238, 5 4202 0 4171.5 4159.0 4148.5 4100.0 4078.5 3997.5 3955.0 15-MAY-1997 09:49 PAGE: LIS ,Tape Verification Listing Schlumberger Alaska Computing Center 15-MAY-1997 09:49 PAGE: 3910.0 3878.0 3841.5 3818.0 3774.0 3726.5 3637.0 3573.0 3548.5 3538.5 3497.0 3409.0 3352.0 3319.5 3314.5 3237.0 3222.0 3181.0 3128.5 3039.5 2926.5 2913.0 2901.5 2861.5 2839.0 2813.0 2774.0 2742.0 2718.0 2677.5 2647.5 2591.5 2443.0 2401.0 2381.0 2348.0 2328.5 2314.5 2302.0 2267.5 2213.0 2194.5 2184.5 100.0 $ ~RGED DATA SOURCE LDWG TOOL CODE $ REMARKS: 3899.5 3867.5 3830.5 3808.0 3763.5 3716.5 3626.5 3563.0 3537.0 3528.0 3486.0 3398.5 3342.0 3309.0 3303.5 3226.0 3212.5 3171.5 3117.0 3027.0 2913.0 2901.0 2888.5 2851.5 2829.5 2803.0 2764 5 2732 0 2707 5 2668 0 2638 0 2582 0 2433 0 2391.0 2370 5 2338 0 2319 0 2304 5 2293 5 2259 0 2204 5 2185 5 2174 5 9O 0 BIT RUN NO. MERGE TOP MERGE BASE 1 2151.0 5217.0 2 5165.0 5450.0 3 5396.0 6146.0 The depth adjustments shown above reflect the MWD GR LIS ~Tape Verification Listing Schlumberger Alaska Computing Center 15-MAY-1997 09:49 to the OH GR logged by SWS. were carried with the GR. $ LIS FORMAT DATA Ail other MWD curves PAGE: ** DATA FORMAT SPECIFICATION RECORD ** ** SET TYPE - 64EB ** TYPE REPR CODE VALUE 1 66 0 2 66 0 3 73 28 4 66 1 5 66 6 73 7 65 8 68 0.5 9 65 FT 11 66 36 12 68 13 66 0 14 65 FT 15 66 68 16 66 1 0 66 1 ** SET TYPE - CHAN ** NAM~ SERV UNIT SERVICE API API API API FILE NUMB NUMB SIZE REPR PROCESS ID ORDER # LOG TYPE C~SS MOD NUMB SAMP ELEM CODE (HEX) DEPT FT O0 000 O0 0 2 1 1 4 68 0000000000 RA MWD OH~M O0 000 O0 0 2 1 1 4 68 0000000000 RP MWD OI~4M O0 000 O0 0 2 1 1 4 68 0000000000 DER MWD OH~4M O0 000 O0 0 2 1 1 4 68 0000000000 ROP MWD FPHR O0 000 O0 0 2 1 1 4 68 0000000000 GR MWD GAPI O0 000 O0 0 2 1 1 4 68 0000000000 FET MWD HR O0 000 O0 0 2 1 1 4 68 0000000000 ** DATA ** DEPT. 6145.500 RA.MWD -999.250 RP.MWD -999.250 ROP.MWD 213.445 GR.MWD -999.250 FET.MWD -999.250 DER. MWD -999.250 LIS~Tape Verification Listing Schlumberger Alaska Computing Center 15-MAY-1997 09:49 PAGE: DEPT. 6000.000 RA.MWD 2.995 RP.MWD ROP.MWD 165.143 GR.MWD 116.485 FET.MWD DEPT. 5000.000 RA.MWD 3.743 RP.MWD ROP.MWD 199.995 GR.MWD 118.455 FET.MWD DEPT. 4000.000 RA.MWD 4.258 RP.MWD ROP.MWD 174.852 GR.MWD 159.517 FET.MWD DEPT. 3000.000 RA.MWD ROP.MWD 268.664 GR.MWD 3.629 RP.MWD 98.334 FET.MWD 2.745 0.407 3.355 0.383 4.123 0.332 3.508 0.336 DEPT. 2151.000 RA.MWD -999.250 RP.MWD -999.250 ROP.MWD -999.250 GR.MWD 39.461 FET.MWD -999.250 DER. MWD DER.MWD DER . MWD DER. MWD DER . MWD 2. 825 3. 469 4. 165 3.548 -999.250 ** END OF DATA ** **** FILE TRAILER **** FILE NAME : EDIT .002 SERVICE : FLIC VERSION : O01CO1 DATE · 97/05/15 MAX REC SIZE : 1024 FILE TYPE : LO LAST FILE : **** TAPE TRAILER **** SERVICE NAME : EDIT DATE : 97/05/15 ORIGIN : FLIC TAPE NAME : 97188 CONTINUATION # : 1 PREVIOUS TAPE : COI~fENT : ARCO ALASKA INC, TARN#4, TARN , API #50-103-20249-00 **** REEL TRAILER **** SERVICE NAME : EDIT DATE : 97/05/15 ORIGIN : FLIC REEL NAME : 97188 CONTINUATION # : PREVIOUS REEL : CO~9~VT : ARCO ALASKA INC, TARN #4, TARN ,API #50-103-20249-00 ........ ARCO *'~'.":::.'***' .... ' .... ' ......... : ..... : ............. '": .......... T r'"C~T:'-G OP",RRi'.'-PTr-':V:; i{_Ekq. Ji'~.'J:LJ_.' ~,i ...... ...................... ' ............. 1_, tj -._x,J :_ L\ ..2 .......... ,.J~ ._ ( -. ,_\RCO }J. eiii<_):, J-eiv '}e ..... :'.:,-,~-~.-, ',- -. PEJ(/[~Si/SP 2(}95~ - 6155' {.:X}R 2164' - 61047 ,-,-,.~o ~Se~}ia/Bi'~.'..e Line) 2EX/}iicroLo2 2187' -- 6!26' p:v/:": '2iohoDans 2:'87~ - 6126' i}5i/SP 2181' ~ 6030' LOGS ( L', iS i t :,'-i -. - r., ~.:, ,.) ~.~ :~ :.~ 7TM (gi..rk) CDR & PEK (Fron,: V~::iri. cation i_,ist, in~: L.DWG ]'ooi Code: SNJi:-~ C/,.,j & r- x -, ') NHEi'2~:E ..... TiP :~o00 - :)/~')O DS: ':-;0 ,o ( fl.;:>pp.,: ,.,-~;,_?.~..." ) N}iR36YE,IIF' 5300 .... 5700' 4 ,,files NHRiT.i, 'Ti...'_-' 5.300 :,~:-:,o~_.'~, :[-!F Zlu")0 ' - 5-""0' ARCO :::,TILL NEEDS mq '-' ...... iT t:.h.e P~' ',-~ ::;:?~-'-' . ..... C, ",; :. .... :-,~_:~:,.,_'i ..-)~J ..... ~z>,'~.: i0 A L) ". . }L-V~!L LoSs (Sepia/Blue Line copies) ~_:z Lzne copies} 'Ri i' :_.o g s ( D :L g ~_ ~.ai c o py ) CORE DESCNiPT!ON (The cc)o,,. ..... -,~- over ep the 29th o '-- is ......... -~-,- '' AUG 2 'l 1997 0,'I & ~as Cons. Com~nissiori ,~Chorage 5300 . O000 -~999 - 9 .... c) 9, ? r:, I-}_ r._.'~ '-'~,q 9 :' '~'' · --999. 2500 -999 -999 . 25:30 ~999 -999, 2500 -999 ~ 2' _ _l/ . ~ .~, ,~ ~. - 2500 ,z. 500 2~0~ 2500 2500 2500 5300,50Q0 -999 -999. 2509 -999 -999. 2500 -,9)99 ~ 995!. 2500 -.999.2500 -999 - 1,9 :). 2500 -999 2500 2500 2500 2500 2500 ~500 5400 2 0 O 000 146 0450 0 1840 -4 0790 0 "" 000 r) 2!!;37 4 4190 0000 2100 0000 3950 0462 U, 600.0 --999,2 - 99', 1:}. 2 -999.2 -999.2 000 -999 . 2500 50C! -999. 2500 500 -999. 2500 500 -999,2500 =00 999 250r' 500 -99E) . 2500 5700 -9q9 . ~999 -999 -':~ 99 0000 - 999 '~ r 0~'~ "9q9 2500 ~999 2500 -999 2 r-. O0 -,qeq 2500 25 o 0 '~ 500 2500 2500 2500 2500 2500 9500 2500 2500 2500 ~ , iD 0 ~9n -999,2500 -999.2500 -e°9 2500 =99q -999 -999 -999 ~999 2500 2500 2~n0 2:00 0 :~ ~99q 2~ _, uO0 -qq9 9~00 ~999.2500 n9e 2500 -999.2500 e9q 25~'~ ~999 -999 -999 -999 -999 oc{o 0 2 0 383 0 087O 0000 6380 2qqq 0008 8 8':00 0,0000 ~ 0000 0,0000 024,0000 0.06~2 -999.2500 -9o9 2500 ~-aa 9500 ~999.2500 =999.2500 -999.2500 -999.2500 ~"9o 25n0 :,:~_ .=500 =999 9RO'~ -999. 2500 ~999. 2500 --999.2500 ~999,2500 ~9q9 ~ 5 ,'.~ 0 ~999.2500 -999,2500 -999,'2500 -999.2500 -999.2500 -999.2500 999 2:00 =999.2500 ~999.2500 =999. 2500 '~q99 2~nF} =q99 25nn -999,2500 ~99~ -999. 2500 3 , 534 n 0,0000 3 0,0000 i294~4692 --999,2500 -999 , 2500 99' ~m~, 95~0 ~999.2500 Tape Tape File Start Depth Tape File End Dept:h mape '~il~.' Level ......... :~/ac ±i!g Ta'me File Depth U'Q. its Subtile 3 is ts~'pe: his 5300 On~OOn 5700.O00000 0.500000 Feet MICIROFIL E[} gate RECEIVED AU6 04 ]997 Alada Oil & Gas Cor~s. 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