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HomeMy WebLinkAboutOil-Endicott-EiderAlaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Endicott Unit, Eider Oil Pool Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 11 July 2005 Page: 1 > 2 > 3 Operator: BP Exploration (Alaska) Inc. Discovery Well: BP Exploration (Alaska) Inc. Duck Island Unit MPU 2-56/EID Permit #198-024 API No. 50-029-22863-00-00 Sec. 36, T12N, R16E, UM Depth: 17,988’ MD / 10,006' TVD May 28, 1998 Status: Producing Location: Central Arctic Slope Area Location Map Unit Location Map DNR Unit Map Orders: Complete List Summary: The Eider oil pool was discovered in 1998 by the Duck Island Unit MPI 2-56/EID well. This pool is located 1-1/2 miles offshore in the westernmost portion of the Duck Island Unit, and it consists of an oil accumulation below a gas cap within the Ivishak Formation. The pool was delineated by two wells, DIU MPI 2-56A/EID and DIU MPI 2-30A, which have 5 additional sidetracks or plugbacks. Two development wells are located within the pool, DIU MPI 2-56A/ EID and DIU MPI 2-30A/E12. Initial production began from 2-56A/EID in June 1998, and averaged 1,850 bopd through December 1998. In January 1999, 2-30A/E12 was brought online. Production immediately jumped to 6,244 bopd in February 1999, but then declined rapidly to 1,189 bopd by September 1999, and the pool was shut in from October 1999 through May 2000. In June of 2000, 2-56A/EID was converted to a water injector, and production was restarted, relying on a single producer, 2-30A/E12. Production peaked in July 2001 at 2,254 bopd, and then declined to about 600 bopd in May 2004. During July 2004, 2-56A/EID was converted to production again, but during the last half of 2004, production from both wells averaged less than 100 bopd. Geology: The Eider oil pool is situated in a fault-controlled anticline that is truncated by the Lower Cretaceous unconformity. The accumulation occupies about 300 acres. Within the pool, the Ivishak Formation consists of three regressive, stratigraphic units: the Lower Sand comprising upper shoreface or marine influenced fluvial and distributary sands, the Middle Shale comprises floodplain or bay fill, and Upper Sand that consisting of mostly fluvial sediments. The Lower Sand ranges from 80’ to 125’ thick, and averages 21% porosity and 30 md permeability. The Middle Shale is 75’ to 90’ thick and has average porosity and permeability values of 20% and 300 md, respectively. The Upper Sand ranges from 60’ to 125’ in thickness, has average porosity of 20%, and average permeability of 300 md. Faulting and fracturing causes these three stratigraphic units to be in pressure communication. API oil gravity ranges from 23.1 to 23.8 degrees, and original oil-in-place (OOIP) is estimated at 13.2 million barrels. Strat Column Type Log Orig. Oil in Place: 13.2 MMSTB (CO 449) Production: Prod Chart Prod Report Prod Data Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls) Cumulative 2,686,972 0 23,323,028 3,183,376 2001 Total 660,495 0 6,493,705 70,401 2002 Total 422,355 0 3,657,804 729,914 2003 Total 242,135 0 2,813,008 1,034,711 2004 Total 114,809 0 929,983 1,299,926 2003 Daily Rate 663 0 7,707 2,834 2004 Daily Rate 315 0 2548 3561 Change (%)-52%0 -67%26% Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/annu...icott%20-%20Oil/Endicott,%20Eider%20Oil/1_Oil_1.htm [3/20/2008 4:42:06 PM] Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Endicott Unit, Eider 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 0 4,332,064 Cumulative 5,876,300 2001 Total 0 959,057 2001 Total 3714 2002 Total 0 1,298,915 2002 Total 0 2003 Total 0 1,386,087 2003 Total 325 2004 Total 0 495,335 2004 Total 2,427 2003 Rate (per day) 0 3,797 2003 Rate (per day) 1 2004 Rate (per day) 0 1,357 2004 Rate (per day) 7 Change (%) 0 -64%Change (%) 600% Field Development Information: Wells In Field Type Well Status 2004 2003 2002 2001 2000 Producer Oil Producer 76 75 72 72 72 Injector Water Injector 24 26 26 26 29 Gas Injector 5 5 5 5 5 WAG Injector 4 3 3 3 0 Water Supply 1 1 1 1 1 Disposal 1 1 1 1 1 Non-Operating Suspended 1 1 4 4 1 Abandoned 31 28 24 24 22 Total 143 140 136 136 131 Active Completions in Pool (Month of December): Type Well Status 2004 2003 2002 2001 2000 Oil Producer Flowing 1 0 1 1 1 Gas Lift 0 1 0 0 0 Shut-In 1 0 0 0 0 Service Well Water Injector 0 1 1 1 0 Gas Injector 0 0 0 0 0 WAG Injector 0 0 0 0 0 Water Supply 0 0 0 0 0 Shut-In 0 0 0 0 1 Disposal Undef.Disposal Injector 0 0 0 0 0 Shut-In 0 0 0 0 0 Total 2 2 2 2 2 Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/annu...icott%20-%20Oil/Endicott,%20Eider%20Oil/1_Oil_2.htm [3/20/2008 4:42:55 PM] Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Endicott Unit, Eider 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 0 0 0 0 0 Sidetrack 0 7 0 0 0 Multilateral 0 0 2 0 0 Service New 0 0 0 0 0 Sidetrack 0 0 0 0 0 Multilateral 0 0 0 0 0 Exploration New 0 0 0 0 0 Sidetrack 0 0 0 0 0 Total 0 7 2 0 0 Reservoir Properties: Description 2004 2003 2002 2001 2000 Reference Datum - ft. below sea level 9700 9700 9700 9700 9700 Temperature - ° F 206 206 206 206 0 Porosity - % 21 21 21 21 21 Permeability - md 134 134 134 134 134 Swi - % - - - - - Oil Viscosity @ Orig. Press. cp - - - - - Oil Viscosity @ Sat. Press. cp ----- Orig. Press. - psi 0 4635 4635 4635 4635 Bubble Point - psi ----- Current Reservoir Press. - psi 0 3700 3900 3900 - Oil Gravity - ° API 0 23 23 23 23 Gas Specific Gravity (Air = 1.0)0 .778 .778 .778 .778 Gross Pay - ft.----- Net Pay - ft.----- Orig. FVF - RB/STB ----- Bubble Point FVF - RB/STB 1.36 1.36 1.36 1.36 1.36 Orig. GOR - SCF/STB 769 769 769 769 769 GOR (current yr.) - SCF/STB 8100 11617 8660 9832 9806 References / Summary Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/annu...icott%20-%20Oil/Endicott,%20Eider%20Oil/1_Oil_3.htm [3/20/2008 4:43:10 PM] Colville River UnitAlpine Oil PoolReservoir PropertiesProperty2003 2002 2001 2000 1999Reference Datum - feet below sea level 7000 7000 7000 7000 7000Temperature - ° F160 160 160 160 160Porosity - %19 19 19 19 19Permeability - md15 15 15 15 15Swi - %20 20 20 20 20Oil Viscosity @ Original Pressure cp0.46 0.46 0.46 0.46 0.46Oil Viscosity @ Saturation Pressure cp0.4 0.4 0.4 0.4 0.4Original Pressure - psia3215 3215 3215 3215 3215Bubble Point - psia2454 2454 2454 2454 2454Current Reservoir Pressure - psia2900 2900 2800 3215 3215Oil Gravity - ° API40 40 40 40 40Gas Specific Gravity (Air = 1.0)0.72 0.72 0.72 0.72 0.72Gross Pay - feet50 50 50 50 50Net Pay - feet48 48 48 48 48Original FVF - RB/STB1.44 1.44 1.44 1.469 1.469Bubble Point FVF - RB/STB1.461 1.461 1.461 1.54 1.54Original Gas/Oil Ratio - SCF/STB840 840 840 940 850Gas/Oil Ratio (avg. December) - SCF/STB 1263 1263 1015 953 0 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells Producing ENDICOTT, EIDER OIL Pool Jan 1958 Dec 2004 Jun 1998 59504 58120 197326 1 Jul 1998 72393 151763 672431 1 Aug 1998 57864 322411 190131 1 Sep 1998 52505 351988 99130 1 Oct 1998 55191 413066 201131 1 Nov 1998 49816 405519 140530 1 Dec 1998 47613 418657 122630 1 394886 2121524 16231Year Total Jan 1999 99311 489270 124639 2 Feb 1999 174826 771322 836546 2 Mar 1999 94378 679946 141538 2 Apr 1999 57706 547393 241732 2 May 1999 49079 531541 168737 2 Jun 1999 33901 475834 169830 1 Jul 1999 35853 520825 179431 1 Aug 1999 23967 359036 89823 1 Sep 1999 35683 503896 121530 1 604704 4879063 20735Year Total Jun 2000 24648 90815 4127 1 Jul 2000 41511 338731 165131 1 Aug 2000 38178 365522 86731 1 Sep 2000 33328 380332 264730 1 Oct 2000 30636 402854 384431 1 Nov 2000 39442 400154 137730 1 Dec 2000 39845 449533 66031 1 247588 2427941 11458Year Total Jan 2001 35808 478989 66731 1 Feb 2001 28236 347213 128527 1 Mar 2001 59588 610547 245031 1 Apr 2001 53621 523768 88730 1 May 2001 57679 218426 029 1 Jun 2001 64013 605621 470230 1 Jul 2001 69862 697302 395731 1 Aug 2001 65523 644554 253631 1 Sep 2001 59340 554856 178230 1 Oct 2001 60062 593569 959030 1 Nov 2001 53698 600172 1959430 1 Dec 2001 53065 618688 2295131 1 660495 6493705 70401Year Total 5/3/2005 Page 1 of 2 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells Producing ENDICOTT, EIDER OIL Pool Jan 1958 Dec 2004 Jan 2002 48358 556860 3027731 1 Feb 2002 40035 500884 2847528 1 Mar 2002 38689 481651 3693231 1 Apr 2002 37304 387767 3995230 1 May 2002 34276 322210 5058231 1 Jun 2002 32785 216551 5849930 1 Jul 2002 29375 128633 6361629 1 Aug 2002 28217 136381 6815931 1 Sep 2002 32757 154899 8909730 1 Oct 2002 35846 238081 9669530 1 Nov 2002 24195 213430 6974627 1 Dec 2002 40518 320457 9788431 1 422355 3657804 729914Year Total Jan 2003 33427 332114 8807631 1 Feb 2003 29513 307251 7564228 1 Mar 2003 27308 326690 7534231 1 Apr 2003 23609 323623 7289730 1 May 2003 25243 282694 7261530 1 Jun 2003 18600 231806 8941330 1 Jul 2003 21191 259347 9126731 1 Aug 2003 17403 293643 9732931 1 Sep 2003 13029 253436 7997726 1 Oct 2003 1307 22684 4310423 1 Nov 2003 12020 33752 12318130 1 Dec 2003 19485 145968 12586831 1 242135 2813008 1034711Year Total Jan 2004 27346 179217 15581331 1 Feb 2004 13857 134433 9881124 1 Mar 2004 25180 101944 13054831 1 Apr 2004 18553 116337 12683430 1 May 2004 18203 126898 11359031 1 Jun 2004 3169 13905 8771121 1 Jul 2004 1427 55138 9960332 2 Aug 2004 696 39483 11482428 2 Sep 2004 2706 31086 10426525 2 Oct 2004 736 36742 2368614 2 Nov 2004 636 12846 12909927 2 Dec 2004 2300 81954 11514225 1 114809 929983 1299926Year Total 2,686,972 23,323,028 3,183,376Pool Total 5/3/2005 Page 2 of 2 Colville River UnitAlpine Oil PoolPermitted WellsYearTotalsNew Sidetrack Multilateral New Sidetrack Multilateral New Sidetrack199980 0 8 0 0 0016200050 013 1 0 0019200130 0 8 1 0 1114200210 10 800 0 019200312 00 501 0 018Totals 38 10 4221 1 186ServiceExploratoryDevelopment State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting ENDICOTT, EIDER OIL Pool Jun 2000 36874 071 Jul 2000 53928 018 1 Aug 2000 37620 018 1 Sep 2000 30190 030 1 Oct 2000 32606 029 1 Nov 2000 1452 011 Year Total 192670 0 Feb 2001 51873 020 1 Mar 2001 69150 031 1 Apr 2001 87443 030 1 May 2001 88592 031 1 Jun 2001 99502 030 1 Jul 2001 95337 031 1 Aug 2001 106381 031 1 Sep 2001 82958 030 1 Oct 2001 91702 031 1 Nov 2001 88131 030 1 Dec 2001 97988 031 1 Year Total 959057 0 Jan 2002 93866 031 1 Feb 2002 93378 028 1 Mar 2002 107434 031 1 Apr 2002 115410 030 1 May 2002 108632 031 1 Jun 2002 100535 030 1 Jul 2002 109422 030 1 Aug 2002 145883 031 1 Sep 2002 116651 030 1 Oct 2002 96508 030 1 Nov 2002 103556 030 1 Dec 2002 107640 031 1 Year Total 1298915 0 Jan 2003 114826 031 1 Feb 2003 70080 028 1 Mar 2003 66577 031 1 Apr 2003 104683 030 1 May 2003 132908 031 1 Jun 2003 139490 030 1 Jul 2003 134973 031 1 Aug 2003 138361 031 1 Sep 2003 120790 028 1 Oct 2003 138521 031 1 Nov 2003 139366 030 1 Dec 2003 85512 029 1 Year Total 1386087 0 2/3/2005 Page 1 of 2 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting ENDICOTT, EIDER OIL Pool Jan 2004 125585 031 1 Feb 2004 108340 029 1 Mar 2004 126990 031 1 Apr 2004 127514 030 1 May 2004 6906 031 Year Total 495335 0 Pool Total 4,332,064 0 2/3/2005 Page 2 of 2 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting ENDICOTT, UNDEFINED WDSP Pool Jul 1986 2702 011 Aug 1986 3499 010 1 Sep 1986 717 031 Oct 1986 13792 016 1 Nov 1986 7865 015 1 Dec 1986 15402 027 1 Year Total 43977 0 Jan 1987 11627 023 1 Feb 1987 5392 010 1 Mar 1987 12077 031 1 Apr 1987 19449 027 1 May 1987 18525 025 1 Jun 1987 25066 027 1 Jul 1987 14746 025 1 Aug 1987 6303 015 1 Sep 1987 8866 028 1 Oct 1987 9788 022 1 Nov 1987 19678 023 1 Dec 1987 127197 031 2 Year Total 278714 0 Jan 1988 165867 031 2 Feb 1988 195697 029 1 Mar 1988 156793 031 1 Apr 1988 165015 030 1 May 1988 184001 040 2 Jun 1988 143207 030 1 Jul 1988 176929 031 1 Aug 1988 200057 031 1 Sep 1988 221270 030 1 Oct 1988 294594 031 1 Nov 1988 289175 030 1 Dec 1988 378003 031 1 Year Total 2570608 0 Jan 1989 51431 031 1 Feb 1989 54733 028 1 Mar 1989 363028 031 1 Apr 1989 233709 030 1 May 1989 34631 031 1 Jun 1989 25331 030 1 Jul 1989 46021 030 1 Aug 1989 38429 031 1 Sep 1989 123288 027 1 Oct 1989 19952 028 1 Nov 1989 18747 025 1 Dec 1989 58729 029 1 Year Total 1068029 0 5/3/2005 Page 1 of 5 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting ENDICOTT, UNDEFINED WDSP Pool Jan 1990 19163 024 1 Feb 1990 150904 028 1 Mar 1990 68399 031 1 Apr 1990 21297 028 1 May 1990 18205 028 1 Jun 1990 17933 029 1 Jul 1990 24074 031 1 Aug 1990 33559 031 1 Sep 1990 49825 030 1 Oct 1990 41611 029 1 Nov 1990 39229 027 1 Dec 1990 79157 031 1 Year Total 563356 0 Jan 1991 35863 030 1 Feb 1991 27274 025 1 Mar 1991 7989 081 May 1991 2154 051 Jun 1991 38663 027 1 Jul 1991 25708 019 1 Aug 1991 5534 013 1 Sep 1991 9114 020 1 Oct 1991 4501 013 1 Nov 1991 3411 010 1 Dec 1991 13781 014 1 Year Total 173992 0 Jan 1992 29032 026 1 Feb 1992 21755 022 1 Mar 1992 30921 020 1 Apr 1992 15262 021 1 May 1992 20182 019 1 Jun 1992 9825 016 1 Jul 1992 18283 018 1 Aug 1992 14955 025 1 Sep 1992 14561 017 1 Oct 1992 6049 017 1 Nov 1992 20182 029 1 Dec 1992 32464 031 1 Year Total 233471 0 5/3/2005 Page 2 of 5 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting ENDICOTT, UNDEFINED WDSP Pool Jan 1993 57417 031 1 Feb 1993 42144 028 1 Mar 1993 46891 031 1 Apr 1993 45152 030 1 May 1993 41102 030 1 Jun 1993 38501 030 1 Jul 1993 41806 030 1 Aug 1993 26126 027 1 Sep 1993 49614 030 1 Oct 1993 58673 031 1 Nov 1993 45971 030 1 Dec 1993 55334 031 1 Year Total 548731 0 Jan 1994 60781 031 1 Feb 1994 68417 028 1 Mar 1994 15163 018 1 Apr 1994 2995 016 1 May 1994 5575 021 1 Jun 1994 10565 023 1 Jul 1994 5063 016 1 Aug 1994 14647 024 1 Sep 1994 9000 016 1 Oct 1994 5206 014 1 Nov 1994 3425 013 1 Dec 1994 1761 091 Year Total 202598 0 Jan 1995 5324 015 1 Feb 1995 10741 022 1 Mar 1995 4400 016 1 Apr 1995 9013 020 1 May 1995 10637 016 1 Jun 1995 5948 012 1 Jul 1995 3250 041 Aug 1995 3200 012 1 Sep 1995 2057 071 Oct 1995 15275 031 1 Nov 1995 11904 022 1 Dec 1995 3825 014 1 Year Total 85574 0 5/3/2005 Page 3 of 5 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting ENDICOTT, UNDEFINED WDSP Pool Jan 1996 9825 014 1 Feb 1996 4576 081 Mar 1996 7102 017 1 Apr 1996 4429 012 1 May 1996 1783 051 Jun 1996 6525 091 Jul 1996 9064 012 1 Aug 1996 6086 061 Sep 1996 3277 081 Oct 1996 889 021 Nov 1996 447 021 Dec 1996 1961 071 Year Total 55964 0 Jan 1997 389 011 Feb 1997 1279 021 Mar 1997 1186 061 Apr 1997 3968 061 May 1997 1984 061 Jun 1997 4619 061 Jul 1997 3046 071 Aug 1997 4744 021 Sep 1997 1106 031 Oct 1997 769 051 Nov 1997 786 031 Dec 1997 196 011 Year Total 24072 0 Jan 1998 1117 031 1 Mar 1998 2207 031 Apr 1998 1300 031 May 1998 260 021 Jul 1998 458 011 Aug 1998 508 021 Sep 1998 1799 011 Nov 1998 263 021 Dec 1998 2042 071 Year Total 9954 0 Jan 1999 380 021 Mar 1999 631 021 Sep 1999 5864 051 Oct 1999 105 011 Dec 1999 3704 041 Year Total 10684 0 Jan 2000 87 011 Oct 2000 23 011 Year Total 110 0 5/3/2005 Page 4 of 5 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting ENDICOTT, UNDEFINED WDSP Pool Apr 2001 200 011 May 2001 3514 041 Year Total 3714 0 Jan 2003 325 011 Year Total 325 0 Jul 2004 195 021 Aug 2004 2232 041 Year Total 2427 0 Pool Total 5,876,300 0 5/3/2005 Page 5 of 5 Deadhorse Harrison Bay Dalton HwyTrans-AlaskaPipelineNuiqsut NPRA B e a u f o r t S e a North Slope, Alaska Eider Oil Pool Modified from AK DNR Div. Oil & Gas 2005 NORTHSTAR UNIT DUCK ISLAND UNITCOLVILLE RIVER UNIT MILNE POINT UNIT KUPARUK RIVER UNIT PRUDHOE BAY UNIT OOOGURUK UNIT TUVAAQ UNIT NIKAITCHUQ UNIT Reference List ENDICOTT, EIDER OIL Alaska Oil and Gas Conservation Commission, 2000, Conservation Order No. 449, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co400_499/co449.htm Alaska Oil and Gas Conservation Commission, 2005, Production Database Rathke, W., 2000, Testimony before the Alaska Oil and Gas Conservation Commission in support of the Application of BP Exploration (Alaska) Inc. to Define the Eider Oil Pool, May 25, 2000, AOGCC Conservation Order No. 449 file. 9/2/2005 Page 1 of 1 Endicott, Eider Oil Pool Summary The Eider oil pool was discovered in 19981 by the Duck Island Unit MPI 2-56/EID well. This pool is located 1-1/2 miles offshore in the westernmost portion of the Duck Island Unit, and it consists of oil below a gas cap within the Ivishak Formation. The pool delineated by two wells, DIU MPI 2-56A/EID and DIU MPI 2-30A, which have 5 additional sidetracks or plugbacks.2 Two development wells are located within the pool, DIU MPI 2-56A/EID and DIU MPI 2- 30A/E12. Initial production began from 2-56A/EID in June 1998, and averaged 1,850 bopd through December 1998. In January 1999, 2-30A/E12 was brought online. Production immediately jumped to 6,244 bopd in February 1999, but then declined rapidly to 1,189 bopd by September 1999, and the pool was shut in from October 1999 through May 2000. In June of 2000, 2-56A/EID was converted to a water injector, and production was restarted, relying on a single producer, 2-30A/E12. Production peaked in July 2001 at 2,254 bopd, and then declined to about 600 bopd in May 2004. During July 2004, 2-56A/EID was converted to production again, but during the last half of 2004, production from both wells averaged less than 100 bopd.3 Geology The Eider oil pool is situated in a fault-controlled anticline that is truncated by the Lower Cretaceous unconformity. The accumulation occupies about 300 acres.4 Within the pool, the Ivishak Formation consists of three regressive, stratigraphic units: the Lower Sand comprising upper shoreface or marine influenced fluvial and distributary sands, the Middle Shale comprises floodplain or bay fill, and Upper Sand that consisting of mostly fluvial sediments. The Lower Sand ranges from 80’ to 125’ thick, and averages 21% porosity and 30 md permeability. The Middle Shale is 75’ to 90’ thick and has average porosity and permeability values of 20% and 300 md, respectively. The Upper Sand ranges from 60’ to 125’ in thickness, has average porosity of 20%, and average permeability of 300 md. Faulting and fracturing causes these three stratigraphic units to be in pressure communication. API oil gravity ranges from 23.1 to 23.8 degrees, and original oil-in-place (OOIP) is estimated at 13.2 million barrels.5 SFD Revised January 21, 2005 1 Rathke, W., 2000, Testimony before the Alaska Oil and Gas Conservation Commission in support of the Application of BP Exploration (Alaska) Inc. to Define the Eider Oil Pool, May 25, 2000; Alaska Oil and Gas Conservation Commission Conservation Order No. 449 file. 2 Rathke, W., 2000, Testimony before the Alaska Oil and Gas Conservation Commission in support of the Application of BP Exploration (Alaska) Inc. to Define the Eider Oil Pool, May 25, 2000; Alaska Oil and Gas Conservation Commission Conservation Order No. 449 file. 3 Alaska Oil and Gas Conservation Commission, 2004, Production Database 4 Rathke, W., 2000, Testimony before the Alaska Oil and Gas Conservation Commission in support of the Application of BP Exploration (Alaska) Inc. to Define the Eider Oil Pool, May 25, 2000 5 Alaska Oil and Gas Conservation Commission, 2000, Conservation Order No. 449, available online at: http://www.state.ak.us/local/akpages/ADMIN/ogc/orders/co/co400_499/co449.htm AAOrder No.DateOperator Description Current ENDICOTT FIELD EIDER OIL POOL Current Orders 501 0CO 16-Oct-03BP EXPLORATI Rules regulating sustained casing pressures in development wells within the Endicott Field. Y 449 0CO 21-Jul-00BP Defines the Eider Oil Pool and establishing rules for it's operation and development. Amended by CO 501. Y 19 0AIO 02-Jun-00BP EXPLORATI Authorizes underground injection for enhanced oil recovery in the Eider Oil Pool in the Endicott Field Y 1/21/2005 AAOrder No.DateOperator Description Current ENDICOTT FIELD EIDER OIL POOL Spacing Exception Orders 437 0CO 23-Dec-98BP Spacing exception for Duck Island 2-30a/E1-02 Y 434 0CO 14-Oct-98BP Spacing exception for Duck Island 2-30a/EI-02.Y 418 0CO 14-Apr-98BP Spacing exception FOR DIU 2-56.EI-01A OIL WELL IN AN UNDEFINED OIL POOL. Y 413 0CO 26-Feb-98BP Spacing exception FOR DIU 2-25/EIDER EXPLORATORY OIL WELL TO AN UNDEFINED OIL POOL. Y 1/21/2005 Eider Oil Pool 0.01.02.03.04.05.0Producing Oil WellsENDICOTT FIELD, EIDER OIL POOL020406080100Water Cut ( % )ENDICOTT FIELD, EIDER OIL POOL0.10.5151050100Cum Oil Prod ( MMbbl )Cum Water Prod ( MMbbl )Cum Gas Prod ( MMMcf )ENDICOTT FIELD, EIDER OIL POOL1998992000010203040.010.1110100Oil Rate (CD) ( Mbbl/d )Water Rate (CD) ( Mbbl/d )Gas Rate (CD) ( MMcf/d )Gas / Oil Ratio ( Mcf/bbl )ENDICOTT FIELD, EIDER OIL POOL Alpine Oil Pool - Permitted Wells0246810121416182019992000200120022003YearDev-MultilatDev-StDev-NewService-StService-NewExpl-StExpl-NewPermitted Wells 0.01.02.03.04.05.0Wells on Gas InjectionWells on Water InjectionENDICOTT FIELD, EIDER OIL POOL - EOR INJECTION0.10.51510Cum Gas Inj ( MMMcf )Cum Water Inj ( MMbbl )ENDICOTT FIELD, EIDER OIL POOL - EOR INJECTION2000010203040.10.51510Gas Inj Rate (CD) ( MMcf/d )Water Inj Rate (CD) ( Mbbl/d )ENDICOTT FIELD, EIDER OIL POOL - EOR INJECTION 0.01.02.0Disposal WellsENDICOTT FIELD, UNDEFINED WASTE DISPOSAL POOL0.10.51510Cum Water Disp ( MMbbl )ENDICOTT FIELD, UNDEFINED WASTE DISPOSAL POOL1986 87 88 89 90 91 92 93 94 95 96 97 98 99 2000 01 02 03 0410-1100101102103104105Waste Disposal Rate ( bbl/d )ENDICOTT FIELD, UNDEFINED WASTE DISPOSAL POOL