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HomeMy WebLinkAboutOil-Kuparuk-MeltwaterAlaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Kuparuk River Unit, Meltwater Oil Pool Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 11 July 2005 Page: 1 > 2 > 3 Operator: ConocoPhillips Alaska, Inc. Discovery Well: ARCO Alaska Inc. Meltwater North No. 1 Permit #200-012 API No. 50-103-20326-00-00 Sec. 20, T08N, R07E, UM Depth: 6,122’ MD / 6,121' TVD April 26, 2000 Status: Producing Location: Central Arctic Slope Area Location Map PA Location Map DNR Unit Map Orders: Complete List Summary: The Meltwater Oil Pool is located within and adjacent to the current boundaries of the Kuparuk River Unit (“KRU”). This is one of the satellite pools that have been discovered and developed utilizing the infrastructure built to develop the Kuparuk River Oil Pool within the KRU. The pool occurs in the Bermuda Interval (“Bermuda”) of the late Cretaceous-aged (Cenomanian-Turonian) Seabee Formation. It was discovered in 2000 by the Meltwater North 1 exploratory well, and delineated by Meltwater 2 and 2A. This pool is defined as the accumulation of hydrocarbons common to, and correlating with, the interval between the 6,785 and 6,974 feet measured depth in the Meltwater North #2A well. It lies between about 4,700’ and 5,500’ true vertical depth subsea. Bermuda crude oil gravity is 37° API, and original oil in place (“OOIP”) within the pool is estimated to be 125 million stock tank barrels of oil (“MMSTB”). No gas cap or water has been encountered within the pool. Meltwater development has been from the KRU 2P-Pad, using wells spaced approximately 10 acres apart. Regular production from the pool began in November 2001 and peaked in May 2002 at 10,863 barrels of oil per day (“BOPD”). In December 2004, production averaged 7,888 barrels BOPD. Geology: Meltwater is the stratigraphic equivalent to the Tarn oil pool to the north, and both share similar lithology. The Bermuda consists of channel fill and lobate sandstones deposed in a turbidite fan system located on a slope-apron environment below an incised, Cenomanian-age shelf. Reservoir sandstones at Meltwater are fine to very fine- grained, lithic-rich, have common mudstone laminations and interbeds, and average about 20% porosity and 12 millidarcies air permeability. Clay content of the sandstone ranges from 15 to 25%, but the clay minerals occur dominantly as framework grains rather than as matrix. The top of the Bermuda dips approximately 2 to 3 degrees to the east-southeast, and complex faulting occurs along the western (updip) margin of the pool. Hydrocarbons are stratigraphically trapped, and their distribution is controlled by the distribution of sand. Shale filled channel complexes and stratigraphic pinch-outs act as lateral boundaries. Bermuda reservoirs are compartmentalized, primarily due to discontinuous sandstone distribution. Strat Column Orig. Oil in Place: 125 MMSTB (CO 456) Production: Prod Chart Prod Report Prod Data Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls) Cumulative 7,657,769 0 17,140,364 250,433 2001 Total 148,855 0 80,612 41,167 2002 Total 2,901,883 0 4,144,959 43,533 2003 Total 2,124,967 0 5,596,451 32,032 2004 Total 2,480,670 0 7,318,342 133,701 2003 Daily Rate 5,822 0 15,333 88 2004 Daily Rate 6,796 0 20,050 366 Change (%)17%0 31%316% http://www.state.ak.us/local/akpages/ADMIN/ogc/.../Kuparuk%20River,%20Meltwater%20Oil/1_Oil_1.htm (1 of 2) [3/28/2008 4:50:54 PM] Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/.../Kuparuk%20River,%20Meltwater%20Oil/1_Oil_1.htm (2 of 2) [3/28/2008 4:50:54 PM] Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Kuparuk River Unit, Meltwater Oil Pool Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 11 July 2005 Page: 1 > 2 > 3 EOR Injection:Disposal Injection in Field: Chart Report Data Chart Report Data Gas (Mcf)Water Disposed Fluids Cumulative 23,502,556 5,364,490 Cumulative 20,085,168 2001 Total 0 0 2001 Total 714,325 2002 Total 6,344,699 0 2002 Total 468,872 2003 Total 5,561,714 1,737,460 2003 Total 552,674 2004 Total 11,596,143 3,627,030 2004 Total 684,182 2003 Rate (per day) 15,238 4,760 2003 Rate (per day) 1,514 2004 Rate (per day) 31,770 9,937 2004 Rate (per day) 1,874 Change (%) 108% 109%Change (%) 24% Field Development Information: Wells In Field Type Well Status 2004 2003 2002 2001 2000 Producer Oil Producer 619 593 573 556 541 Injector Water Injector 149 156 167 203 201 Gas Injector 0 0 3 3 7 WAG Injector 333 319 295 237 221 Observation 1 1 1 1 1 Disposal 15 15 15 15 15 Non-Operating Suspended 11 10 13 9 9 Abandoned 149 143 134 127 121 Total 1277 1237 1201 1151 1125 Active Completions in Pool (Month of December): Type Well Status 2004 2003 2002 2001 2000 Oil Producer Flowing 0 0 0 0 - Gas Lift 12 6 8 2 - Pump 1 1 1 0 - Shut-In 0 2 0 0 - Service Well Water Injector 0 0 0 0 - Gas Injector 0 0 0 0 - WAG Injector 6 2 2 0 - Water Supply 0 0 0 0 - Shut-In 0 0 0 0 - Disposal Undef.Disposal Injector 1 1 1 2 - Shut-In 14 13 13 12 - Total 34 25 25 16 - Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/annu...0Oil/Kuparuk%20River,%20Meltwater%20Oil/1_Oil_2.htm [3/28/2008 4:51:05 PM] Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Kuparuk River Unit, Meltwater Oil Pool Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 11 July 2005 Page: 1 > 2 > 3 Permitted Wells in Field: Type Well Status 2004 2003 2002 2001 2000 Development New 11 19 9 24 22 Sidetrack 7 3 5 5 10 Multilateral 16 5 1 2 3 Service New 6 11 6 15 11 Sidetrack 1 3 0 6 Multilateral 6 0 0 0 0 Exploration New 1 0 2 0 0 Sidetrack 0 0 0 1 0 Total 48 41 19 48 52 Reservoir Properties: Description 2004 2003 2002 2001 2000 Reference Datum - ft. below sea level 5400 5400 5400 5400 - Temperature - ° F 140 140 140 140 - Porosity - % 20 20 20 20 - Permeability - md 10 10 10 10 - Swi - % 40 40 40 40 - Oil Viscosity @ Orig. Press. cp .75 .75 75 75 - Oil Viscosity @ Sat. Press. cp --.--- Orig. Press. - psi 2370 2370 2370 2370 - Bubble Point - psi 2067 2067 2067 2067 - Current Reservoir Press. - psi 2000 2200 2400 2067 - Oil Gravity - ° API 36 36 36 36 - Gas Specific Gravity (Air = 1.0).8 .8 .8 .8 - Gross Pay - ft.100-300 100-300 100-300 100-300 - Net Pay - ft.40-150 40-150 40-150 40-150 - Orig. FVF - RB/STB 1.34 1.34 1.34 1.34 - Bubble Point FVF - RB/STB ----- Orig. GOR - SCF/STB 620 620 620 620 - GOR (current yr.) - SCF/STB 2950 2632 1428 542 - References / Summary Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/annu...0Oil/Kuparuk%20River,%20Meltwater%20Oil/1_Oil_3.htm [3/28/2008 4:51:17 PM] State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells Producing KUPARUK RIVER, MELTWATER OIL Pool Jan 1958 Dec 2004 Nov 2001 5234 595 31283 1 Dec 2001 143621 80017 3803944 2 148855 80612 41167Year Total Jan 2002 126520 135975 168367 3 Feb 2002 130574 132860 105175 4 Mar 2002 170124 167934 1824123 4 Apr 2002 258973 322971 9694172 6 May 2002 336766 417908 5707226 8 Jun 2002 281862 391736 5675224 8 Jul 2002 253255 393907 7621229 8 Aug 2002 287931 418014 980248 8 Sep 2002 243142 370733 580240 8 Oct 2002 245899 387578 102245 8 Nov 2002 279878 469148 6120227 9 Dec 2002 286959 536195 2496279 9 2901883 4144959 43533Year Total Jan 2003 257051 534437 952275 9 Feb 2003 204943 464781 662238 9 Mar 2003 227656 503539 935277 9 Apr 2003 210384 586851 533270 9 May 2003 194586 586032 1749253 9 Jun 2003 164517 389090 2504231 8 Jul 2003 171659 415760 2308246 8 Aug 2003 159516 429069 3439245 8 Sep 2003 134400 371812 2776206 8 Oct 2003 143753 449780 6044213 7 Nov 2003 127007 442292 4956209 7 Dec 2003 130889 423008 5174217 7 2126361 5596451 32032Year Total Jan 2004 176944 526944 6014238 8 Feb 2004 160297 551335 4648232 8 Mar 2004 183113 633813 13323286 10 Apr 2004 177480 596992 6871286 10 May 2004 190855 575193 10290312 12 Jun 2004 211225 591920 13311360 12 Jul 2004 194289 548816 6020370 12 Aug 2004 219626 680485 9156368 12 Sep 2004 233104 791030 11366360 12 Oct 2004 266237 649301 11097372 12 Nov 2004 222984 548456 20138360 12 Dec 2004 244516 624057 21467387 13 2480670 7318342 133701Year Total 7,657,769 17,140,364 250,433Pool Total 2/7/2005 Page 1 of 1 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting KUPARUK RIVER, MELTWATER OIL Pool Jan 2002 0 55132829 2 Feb 2002 0 90403056 2 Mar 2002 0 30304732 2 Apr 2002 0 36192260 2 May 2002 0 29311629 2 Jun 2002 0 56454843 2 Jul 2002 0 79947962 2 Aug 2002 0 80425062 2 Sep 2002 0 77776560 2 Oct 2002 0 38210426 2 Nov 2002 0 6477341 Dec 2002 0 53833756 2 Year Total 0 6344699 Jan 2003 0 56764962 2 Feb 2003 0 60053456 2 Mar 2003 0 67789162 2 Apr 2003 0 71278460 2 May 2003 230444 36099755 2 Jun 2003 296388 14589557 2 Jul 2003 397013 25717762 2 Aug 2003 349035 35840960 2 Sep 2003 197040 45352360 2 Oct 2003 195492 61912762 2 Nov 2003 72048 42432446 2 Dec 2003 0 38340433 2 Year Total 1737460 5561714 Jan 2004 0 62494857 2 Feb 2004 0 64858258 2 Mar 2004 80358 1019245128 5 Apr 2004 152980 1238079146 5 May 2004 509759 1126698182 6 Jun 2004 423744 1108633180 6 Jul 2004 294967 1013750179 6 Aug 2004 375532 1021912186 6 Sep 2004 344022 1107087179 6 Oct 2004 348868 1134463179 6 Nov 2004 522965 850904177 6 Dec 2004 573835 701842184 6 Year Total 3627030 11596143 Pool Total 5,364,490 23,502,556 2/2/2005 Page 1 of 1 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting KUPARUK RIVER, CRETACEO U WDSP Pool Apr 1982 18024 030 1 May 1982 14292 023 1 Jun 1982 12643 030 1 Jul 1982 15259 031 1 Aug 1982 22348 030 1 Sep 1982 27175 031 1 Oct 1982 13731 030 1 Nov 1982 2895 030 1 Dec 1982 825 031 1 Year Total 127192 0 Jan 1983 2004 031 1 Feb 1983 6549 028 1 Mar 1983 8846 031 1 Apr 1983 18223 030 1 May 1983 39076 031 1 Jun 1983 48507 030 1 Jul 1983 49670 031 1 Aug 1983 57968 031 1 Sep 1983 91688 030 1 Oct 1983 104766 031 1 Nov 1983 85334 030 1 Dec 1983 92638 031 1 Year Total 605269 0 Jan 1984 99362 031 1 Feb 1984 101283 029 1 Mar 1984 123472 031 1 Apr 1984 169478 030 1 May 1984 221495 031 1 Jun 1984 209499 030 1 Jul 1984 213715 031 1 Nov 1984 9933 030 1 Year Total 1148237 0 Jun 1986 92314 060 2 Jul 1986 65039 045 2 Aug 1986 78742 045 2 Sep 1986 22721 033 2 Oct 1986 2994 091 Nov 1986 181 021 Dec 1986 1466 031 Year Total 263457 0 2/7/2005 Page 1 of 7 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting KUPARUK RIVER, CRETACEO U WDSP Pool Jan 1987 23209 035 2 Feb 1987 19867 031 2 Mar 1987 25900 040 2 Apr 1987 19308 040 2 May 1987 21848 051 2 Jun 1987 41421 043 2 Jul 1987 45896 052 2 Aug 1987 30063 045 2 Sep 1987 60763 040 2 Oct 1987 14935 042 2 Nov 1987 35988 053 2 Dec 1987 21397 042 2 Year Total 360595 0 Jan 1988 27173 031 1 Feb 1988 20692 029 1 Mar 1988 19351 031 1 Apr 1988 17864 030 1 May 1988 21209 030 1 Jun 1988 70768 053 3 Jul 1988 42991 031 1 Aug 1988 42437 030 1 Sep 1988 61179 039 2 Oct 1988 22197 029 1 Nov 1988 11650 024 1 Dec 1988 15287 027 1 Year Total 372798 0 Jan 1989 19062 028 1 Feb 1989 16832 023 1 Mar 1989 18471 029 1 Apr 1989 38398 030 1 May 1989 49183 031 1 Jun 1989 59425 030 1 Jul 1989 28335 031 1 Aug 1989 52219 039 2 Sep 1989 75356 030 1 Oct 1989 36890 031 1 Nov 1989 24224 028 1 Dec 1989 25380 031 1 Year Total 443775 0 2/7/2005 Page 2 of 7 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting KUPARUK RIVER, CRETACEO U WDSP Pool Jan 1990 24735 031 1 Feb 1990 28980 025 1 Mar 1990 35995 030 1 Apr 1990 35585 030 1 May 1990 130943 055 9 Jun 1990 1143291 0270 9 Jul 1990 396686 0135 9 Aug 1990 84540 031 1 Sep 1990 49185 030 1 Oct 1990 27690 028 1 Nov 1990 20950 030 1 Dec 1990 23850 030 1 Year Total 2002430 0 Jan 1991 31265 037 2 Feb 1991 24588 031 2 Mar 1991 37067 042 2 Apr 1991 36158 036 3 May 1991 40144 030 1 Jun 1991 833116 0261 9 Jul 1991 1032021 0283 10 Aug 1991 135310 079 10 Sep 1991 72725 058 2 Oct 1991 56607 060 3 Nov 1991 47655 059 2 Dec 1991 63261 061 3 Year Total 2409917 0 Jan 1992 58821 063 3 Feb 1992 79120 087 4 Mar 1992 130882 0120 4 Apr 1992 113728 0114 4 May 1992 70386 069 4 Jun 1992 1246638 0290 11 Jul 1992 230965 0100 10 Aug 1992 32712 031 1 Sep 1992 34181 028 1 Oct 1992 28891 031 1 Nov 1992 21260 028 1 Dec 1992 42818 048 2 Year Total 2090402 0 2/7/2005 Page 3 of 7 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting KUPARUK RIVER, CRETACEO U WDSP Pool Jan 1993 65534 066 3 Feb 1993 96858 080 3 Mar 1993 92664 086 3 Apr 1993 103002 064 3 May 1993 80928 059 2 Jun 1993 742848 0189 9 Jul 1993 648729 0157 9 Aug 1993 26195 027 2 Sep 1993 44602 045 2 Oct 1993 30627 028 2 Nov 1993 45721 039 2 Dec 1993 40465 038 2 Year Total 2018173 0 Jan 1994 26877 028 2 Feb 1994 46530 048 3 Mar 1994 56629 057 3 Apr 1994 52519 053 2 May 1994 37390 031 1 Jun 1994 809031 0177 9 Jul 1994 963869 0197 8 Aug 1994 21040 027 1 Sep 1994 16845 022 1 Oct 1994 16275 024 1 Nov 1994 13520 020 1 Dec 1994 45933 049 2 Year Total 2106458 0 Jan 1995 45473 051 3 Feb 1995 36906 037 2 Mar 1995 34570 042 2 Apr 1995 24815 038 2 May 1995 20496 029 2 Jun 1995 212537 077 5 Jul 1995 15060 020 1 Aug 1995 76102 034 4 Sep 1995 17520 027 2 Oct 1995 15288 020 2 Nov 1995 21755 025 2 Dec 1995 46863 051 2 Year Total 567385 0 2/7/2005 Page 4 of 7 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting KUPARUK RIVER, CRETACEO U WDSP Pool Jan 1996 31187 031 2 Feb 1996 41157 044 3 Mar 1996 39553 049 2 Apr 1996 46355 047 2 May 1996 25341 027 1 Jun 1996 22318 025 2 Jul 1996 27346 030 2 Aug 1996 131324 048 4 Sep 1996 26263 022 1 Oct 1996 8503 062 Nov 1996 12139 091 Dec 1996 37944 031 3 Year Total 449430 0 Jan 1997 27016 043 2 Feb 1997 37282 042 3 Mar 1997 46553 049 3 Apr 1997 35423 035 2 May 1997 31119 031 3 Jun 1997 49049 036 2 Jul 1997 53566 041 2 Aug 1997 19620 030 2 Sep 1997 195492 035 6 Oct 1997 40484 036 2 Nov 1997 60432 046 2 Dec 1997 76538 050 2 Year Total 672574 0 Jan 1998 58560 048 2 Feb 1998 50144 044 3 Mar 1998 71032 043 2 Apr 1998 78197 050 3 May 1998 48338 050 2 Jun 1998 75187 052 3 Jul 1998 38424 043 2 Aug 1998 69453 043 6 Sep 1998 126422 057 6 Oct 1998 62825 049 2 Nov 1998 43230 042 2 Dec 1998 86379 049 2 Year Total 808191 0 2/7/2005 Page 5 of 7 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting KUPARUK RIVER, CRETACEO U WDSP Pool Jan 1999 60899 048 2 Feb 1999 27979 027 1 Mar 1999 54647 039 2 Apr 1999 42163 044 2 May 1999 24714 041 2 Jun 1999 25136 041 2 Jul 1999 19960 028 2 Aug 1999 23241 034 2 Sep 1999 47500 039 2 Oct 1999 22625 037 2 Nov 1999 44215 037 2 Dec 1999 28100 041 2 Year Total 421179 0 Jan 2000 54945 047 2 Feb 2000 42510 043 2 Mar 2000 58762 044 2 Apr 2000 62560 046 2 May 2000 54197 044 2 Jun 2000 51946 041 2 Jul 2000 98563 048 4 Aug 2000 165462 065 5 Sep 2000 49944 035 2 Oct 2000 59235 041 2 Nov 2000 51703 038 3 Dec 2000 47826 041 2 Year Total 797653 0 Jan 2001 41502 041 2 Feb 2001 73510 035 2 Mar 2001 72758 045 2 Apr 2001 55982 043 2 May 2001 64773 050 2 Jun 2001 69020 048 3 Jul 2001 65315 035 2 Aug 2001 50240 040 3 Sep 2001 45411 042 2 Oct 2001 56438 040 2 Nov 2001 53841 038 2 Dec 2001 65535 040 2 Year Total 714325 0 2/7/2005 Page 6 of 7 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting KUPARUK RIVER, CRETACEO U WDSP Pool Jan 2002 44173 039 2 Feb 2002 44135 037 3 Mar 2002 65221 044 2 Apr 2002 37600 039 2 May 2002 42845 037 2 Jun 2002 43411 030 1 Jul 2002 30549 027 1 Aug 2002 41685 027 1 Sep 2002 21635 028 1 Oct 2002 29783 030 1 Nov 2002 26415 024 1 Dec 2002 41420 028 1 Year Total 468872 0 Jan 2003 35776 031 2 Feb 2003 51754 029 2 Mar 2003 86226 031 1 Apr 2003 72975 030 1 May 2003 48587 030 1 Jun 2003 34944 032 2 Jul 2003 60628 031 1 Aug 2003 44341 030 1 Sep 2003 41574 029 1 Oct 2003 26107 025 1 Nov 2003 18782 023 1 Dec 2003 30980 026 1 Year Total 552674 0 Jan 2004 34700 030 1 Feb 2004 58826 028 1 Mar 2004 98377 031 1 Apr 2004 73684 030 1 May 2004 52856 031 1 Jun 2004 40480 029 1 Jul 2004 40793 028 1 Aug 2004 53779 029 1 Sep 2004 38873 029 1 Oct 2004 56287 031 1 Nov 2004 70730 030 1 Dec 2004 64797 031 1 Year Total 684182 0 Pool Total 20,085,168 0 2/7/2005 Page 7 of 7 Arctic Ocean 9 E12 N7 E14 N10 N8 NKuparuk River Unit Meltwater PA Tarn PA Tabasco PA Kuparuk PA West Sak PA N AOGCC Kuparuk River Unit LOCATION MAP 0 6 miles Meltwater Oil Pool Deadhorse Harrison Bay Dalton HwyTrans-AlaskaPipelineNuiqsut NPRA B e a u f o r t S e a North Slope, Alaska Modified from AK DNR Div. Oil & Gas 2005 NORTHSTAR UNIT DUCK ISLAND UNIT COLVILLE RIVER UNIT MILNE POINT UNIT KUPARUK RIVER UNIT PRUDHOE BAY UNIT OOOGURUK UNIT TUVAAQ UNIT NIKAITCHUQ UNIT Tarn Oil Pool Reference List KUPARUK RIVER, MELTWATER OIL Alaska Oil and Gas Conservation Commission, 2001, Conservation Order No. 456, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co450_499/co456.htm Alaska Oil and Gas Conservation Commission, 2003, Conservation Order No. 456a, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co450_499/co456a.htm Moothart, S., 2001, Testimony before the Alaska Oil and Gas Conservation Commission in support of the Application of ConocoPhillips Alaska Inc. to Define the Aurora Oil Pool, May 7, 2001, AOGCC Conservation Order No. 456 file. Nelson, K., 2001, First development well spud at Phillips Alaska’s Meltwater development, in Petroleum News Alaska, Vol. 6, No. 5, Week of May 28, 2001 2/7/2005 Page 1 of 1 Meltwater Oil Pool Summary The Meltwater Oil Pool is located within and adjacent to the current boundaries of the Kuparuk River Unit (“KRU”). This is one of the satellite pools that have been discovered and developed utilizing the infrastructure built to develop the Kuparuk River Oil Pool within the KRU.1 The pool occurs in the Bermuda Interval (“Bermuda”) of the late Cretaceous-aged (Cenomanian-Turonian) Seabee Formation. It was discovered in 2000 by the Meltwater North 1 exploratory well, and delineated by Meltwater 2 and 2A.2 This pool is defined as the accumulation of hydrocarbons common to, and correlating with, the interval between the 6,785 and 6,974 feet measured depth in the Meltwater North #2A well.3 It lies between about 4,700’ and 5,500’ true vertical depth subsea.4 Bermuda crude oil gravity is 37° API, and original oil in place (“OOIP”) within the pool is estimated to be 125 million stock tank barrels of oil (“MMSTB”). No gas cap or oil-water contact have been encountered within the pool.5 Meltwater development has been from the KRU 2P-Pad, using wells spaced approximately 10 acres apart.6 Regular production from the pool began in November 2001 and peaked in May 2002 at 10,863 barrels of oil per day (“BOPD”). In December 2004, production averaged 7,888 barrels BOPD.7 Geology Meltwater is the stratigraphic equivalent to the Tarn oil pool to the north, and both share similar lithology. The Bermuda consists of channel fill and lobate sandstones deposed in a turbidite fan system located on a slope-apron environment below an incised, Cenomanian-age shelf. Reservoir sandstones at Meltwater are fine to very fine-grained, lithic-rich, have common mudstone laminations and interbeds, and average about 20% porosity and 12 millidarcies air permeability. Clay content of the sandstone ranges from 15 to 25%, but the clay minerals occur dominantly as framework grains rather than as matrix. The top of the Bermuda dips approximately 2 to 3 degrees to the east-southeast, and complex faulting occurs along the western (updip) margin of the pool. Hydrocarbons are stratigraphically trapped, and their distribution is controlled by the distribution of sand. Shale filled channel complexes and stratigraphic pinch-outs act as lateral boundaries. Bermuda reservoirs are compartmentalized, primarily due to discontinuous sandstone distribution.8 S. Davies Revised 2/6/2005 1 Alaska Oil and Gas Conservation Commission, 2003, Conservation Order No. 456a, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co450_499/co456a.htm 2 Alaska Oil and Gas Conservation Commission, 2001, Conservation Order No. 456, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co450_499/co456.htm 3 Alaska Oil and Gas Conservation Commission, 2003, Conservation Order No. 456a, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co450_499/co456a.htm 4 Moothart, S., 2001, Testimony before the Alaska Oil and Gas Conservation Commission in support of the Application of ConocoPhillips Alaska Inc. to Define the Aurora Oil Pool, May 7, 2001, AOGCC Conservation Order No. 456 file. 5 Alaska Oil and Gas Conservation Commission, 2001, Conservation Order No. 456, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co450_499/co456.htm 6 Alaska Oil and Gas Conservation Commission, 2003, Conservation Order No. 456a, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co450_499/co456a.htm 7 Alaska Oil and Gas Conservation Commission, 2005, Production Database 8 Alaska Oil and Gas Conservation Commission, 2001, Conservation Order No. 456, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co450_499/co456.htm AAOrder No.DateOperator Description Current KUPARUK RIVER FIELD MELTWATER OIL POOL Current Orders 494 0CO 04-Sep-03CONOCOPHILLI AOGCC on its own motion, adopted rules regulating sustained casing pressures in development wells in all pools within the Kuparuk River Field. Y 456 0ACO 27-Aug-03CONOCOPHILLI Authorization to changes to Rule 6 Conservation Order 456 pertaining to Common Production Facilities and Surface Commingling allocation methods affecting the Meltwater Oil Pool producing with the Kuparuk River Unit. Y 21 0AIO 01-Aug-01Phillips Authorizes underground injection of fluids for enhanced oil recovery in the Meltwater Oil Pool. Y AAOrder No.DateOperator Description Current KUPARUK RIVER FIELD MELTWATER OIL POOL Obsolete Orders 456 0CO 01-Aug-01CONOCOPHILLI Pool Rules for the Meltwater Oil Pool. Amended by CO 494 and CO 456A/Superseded by CO 456A. N Meltwater 048121620Producing Oil WellsKUPARUK RIVER FIELD, MELTWATER OIL POOL020406080100Water Cut ( % )KUPARUK RIVER FIELD, MELTWATER OIL POOL0.10.5151050100Cum Oil Prod ( MMbbl )Cum Water Prod ( MMbbl )Cum Gas Prod ( MMMcf )KUPARUK RIVER FIELD, MELTWATER OIL POOL20010203040.010.050.10.5151050100Oil Rate (CD) ( Mbbl/d )Water Rate (CD) ( Mbbl/d )Gas Rate (CD) ( MMcf/d )Gas / Oil Ratio ( Mcf/bbl )KUPARUK RIVER FIELD, MELTWATER OIL POOL 0246810Wells on Gas InjectionWells on Water InjectionKUPARUK RIVER FIELD, MELTWATER OIL POOL - EOR INJECTION0.10.5151050100Cum Gas Inj ( MMMcf )Cum Water Inj ( MMbbl )KUPARUK RIVER FIELD, MELTWATER OIL POOL - EOR INJECTION200203040.10.5151050100Gas Inj Rate (CD) ( MMcf/d )Water Inj Rate (CD) ( Mbbl/d )KUPARUK RIVER FIELD, MELTWATER OIL POOL - EOR INJECTION 051015Disposal WellsKUPARUK RIVER FIELD, CRETACEOUS UNDEFINED WASTE DISPOSAL POOL0.10.5151050100Cum Water Disp ( MMbbl )KUPARUK RIVER FIELD, CRETACEOUS UNDEFINED WASTE DISPOSAL POOL1982 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 2000 01 02 03 04100101102103104105Waste Disposal Rate ( bbl/d )KUPARUK RIVER FIELD, CRETACEOUS UNDEFINED WASTE DISPOSAL POOL