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HomeMy WebLinkAboutOil-PBU-NiakukAlaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Prudhoe Bay Unit, Niakuk Oil Pool Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 25 July 2005 Page: 1 > 2 > 3 Operator: BP Exploration (Alaska) Inc. Discovery Well: Sohio Niakuk No. 5 Permit #185-027 API No. 50-029-21290-00-00 Sec. 30, T12N, R16E, UM Depth: 11,507’ MD / 10,643' TVD April 18, 1985 Status: Producing Location: Central Arctic Slope Area Location Map Unit Location Map DNR Unit Map Orders: Complete List Summary: The Niakuk oil pool is defined as the accumulation of oil and gas in the Kuparuk River Formation ("Kuparuk") that correlates with the interval between 12,318 feet and 12,942 feet measured depth (9351 feet and 9842 feet true vertical depth subsea). Regular production began from the pool in April 1994, and peaked at 37,172 barrels of oil per day in September 1996. Since 2000, Niakuk oil production has declined at an average rate of about 15% per year. During December 2004, Niakuk averaged 7,239 barrels of oil per day, 36,565 barrels of water per day, and 6,861 MCF of gas per day. Geology: Lateral heterogeneity and abrupt facies change characterize the Kuparuk in the Niakuk area. The Niakuk reservoir contains two elongated, oil-bearing segments that do not appear to be in hydraulic communication. Normal faults bound the two segments on the north and south, and numerous moderate-displacement normal faults cut the reservoir. The western segment ("Segment 1") contains approximately 545 acres. The eastern segment ("Segment 2") contains approximately 1,310 acres. Porosity in Segment 1 varies from 15.2% to 24.4%, permeability varies from 6 to 1,250 millidarcies, and oil saturation ranges from 66% to 75%. In Segment 2, porosity ranges from 19.5% to 23.0%, permeability varies from 1 to 3,008 millidarcies, and oil saturation ranges from 67% to 79%. Oil gravity measures 24.0 degrees API. A gas-oil-contact has not been identified in the Niakuk wells. Estimated original oil in place ("OOIP") for the Niakuk reservoir is 137.4 MMSTB (56.1 MMSTB in Segment 1 and 81.3 MMSTB in Segment 2) and original gas in place ("OGIP") is 90.9 BSCF. Structure Map Strat Column Orig. Oil in Place: 137.4 MMSTB (CO 329) Orig. Gas in Place:90.9 BSCF (CO 329) Production: Prod Chart Prod Report Prod Data Oil (bbls) NGL (bbls) Gas (mcf) Water (bbls) Cumulative 80,267,630 955,457 67,440,715 57,219,279 2001 Total 6,912,585 108,561 5,835,838 4,551,434 2002 Total 5,813,941 54,534 4,287,368 8,399,021 2003 Total 4,599,262 38,534 3,385,803 10,461,065 2004 Total 3,803,343 122 3,021,718 12,258,973 2003 Daily Rate 12,601 106 9,276 28,660 2004 Daily Rate 10,420 122 8,279 33,586 Change (%)-17%15%-11%17% Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/ann...0-%20Oil/Prudhoe%20Bay,%20Niakik%20Oil/1_Oil_1.htm [3/28/2008 5:27:25 PM] Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Prudhoe Bay Unit, Niakuk Oil Pool Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 25 July 2005 Page: 1 > 2 > 3 EOR Injection:Disposal Injection in Field: Chart Report Data Chart Report Data Gas (Mcf)Water Disposed Fluids Cumulative 0 172,742,928 Cumulative 1,769,881,704 2001 Total 0 18,274,954 2001 Total 95,999,818 2002 Total 0 18,123,876 2002 Total 86,728,378 2003 Total 0 17,269,813 2003 Total 65,920,644 2004 Total 0 14,766,240 2004 Total 56,340,325 2003 Rate (per day) 0 47,315 2003 Rate (per day) 180,605 2004 Rate (per day) 0 40,455 2004 Rate (per day) 154,357 Change (%) 0 -14%Change (%) -15% Field Development Information: Wells In Field Type Well Status 2004 2003 2002 2001 2000 Producer Oil Producer 1326 1248 1231 1209 1145 Injector Water Injector 99 81 74 62 57 Gas Injector 38 38 38 40 41 WAG Injector 176 161 156 144 138 Water Supply 2 1 1 2 2 Observation 12 12 11 12 12 Disposal 20 20 20 21 21 Non-Operating Suspended 30 30 49 52 34 Op Shut Down 1 0 0 0 0 Abandoned 853 771 692 627 583 Total 2557 2362 2272 2169 2031 Active Completions in Pool (Month of December): Type Well Status 2004 2003 2002 2001 2000 Oil Producer Flowing 0 0 0 0 0 Gas Lift 15 15 15 13 12 Shut-In 3 3 3 6 6 Service Well Water Injector 8 8 8 8 7 Gas Injector 0 0 0 0 0 WAG Injector 0 0 0 0 0 Water Supply 0 0 0 0 0 Shut-In 1 1 1 0 0 Disposal Undef.Disposal Injector 13 13 16 16 16 Shut-In 7 7 4 4 4 Total 47 47 47 47 45 Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/ann...0-%20Oil/Prudhoe%20Bay,%20Niakik%20Oil/1_Oil_2.htm [3/28/2008 5:27:30 PM] Alaska Oil and Gas Conservation Commisssion - Pool Statistics, Unit and Pool Home Orders Staff Calendar Contact Us AOGCC Pool Statistics Prudhoe Bay Unit, Niakuk Oil Pool Alaska Oil and Gas Conservation Commission > Annual Reports > Pool Statistics - 2004: Updated 25 July 2005 Page: 1 > 2 > 3 Permitted Wells in Field: Type Well Status 2004 2003 2002 2001 2000 Development New 9 12 17 19 8 Sidetrack 62 62 58 67 67 Multilateral 18 10 14 3 4 Service New 12 7 17 6 1 Sidetrack 8 3 1 8 7 Multilateral 0 0 0 0 0 Exploration New 0 0 1 1 0 Sidetrack 0 0 0 1 0 Total 109 94 108 103 87 Reservoir Properties: Description 2004 2003 2002 2001 2000 Reference Datum - ft. below sea level 9200 9200 9200 9200 9200 Temperature - ° F 187 187 187 187 187 Porosity - % 20 20 20 20 20 Permeability - md 500 500 500 500 500 Swi - % 28 28 28 28 28 Oil Viscosity @ Orig. Press. cp .94 .94 1.46 1.46 1.46 Oil Viscosity @ Sat. Press. cp ----- Orig. Press. - psi 4446 4446 4446 4446 4446 Bubble Point - psi 3800 3800 3800 3800 3800 Current Reservoir Press. - psi 2500-4600 2500-4800 2800-4400 2800-4400 1572-5004 Oil Gravity - ° API 24.9 24.9 24.9 24.9 24.9 Gas Specific Gravity (Air = 1.0).72 .72 .72 .72 .72 Gross Pay - ft.350 350 350 350 350 Net Pay - ft.10-200 10-200 10-200 10-200 10-200 Orig. FVF - RB/STB 1.35 1.35 1.35 1.35 1.35 Bubble Point FVF - RB/STB ----- Orig. GOR - SCF/STB 660 660 660 660 660 GOR (current yr.) - SCF/STB 795 736 737 844 691 References / Summary Continued: 1 > 2 > 3 Home Orders Staff Calendar Contact Us Webmaster http://www.state.ak.us/local/akpages/ADMIN/ogc/ann...0-%20Oil/Prudhoe%20Bay,%20Niakik%20Oil/1_Oil_3.htm [3/28/2008 5:27:35 PM] State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004Through PBU_LIS_L5 Jul 1998 37753 55796 584513 1 Aug 1998 66036 98831 4491031 1 Sep 1998 40854 54574 4016630 1 Oct 1998 61312 50211 3313831 1 Nov 1998 62979 58278 1874430 1 Dec 1998 62264 65940 2028231 1 Jan 1999 52299 54893 2363631 1 Feb 1999 41177 35700 2485328 1 Mar 1999 41462 26707 2822931 1 Apr 1999 36662 22820 2982430 1 May 1999 33831 21055 2892931 1 Jun 1999 37619 20056 3113630 1 Jul 1999 41546 20996 3256431 1 Aug 1999 39168 15696 3197431 1 Sep 1999 30732 20752 2786030 1 Oct 1999 37117 33464 3287631 1 Nov 1999 34662 33579 3073830 1 Dec 1999 34565 32930 3149631 1 Jan 2000 34109 31166 3241331 1 Feb 2000 30841 26304 3011629 1 Mar 2000 32617 26833 3273931 1 Apr 2000 29949 14730 3054530 1 May 2000 135 365 1336 1 Jun 2000 19122 22953 3117126 1 Jul 2000 29885 25441 3684431 1 Aug 2000 32386 26621 3274031 1 Sep 2000 32139 27314 3274930 1 Oct 2000 34771 29645 3469431 1 Nov 2000 30665 27230 3024430 1 Dec 2000 32164 29081 2357731 1 Jan 2001 30963 28939 3198531 1 Feb 2001 29466 31836 3080628 1 Mar 2001 30296 27850 3143931 1 Apr 2001 22847 34873 2429827 1 May 2001 34870 41916 3273531 1 Jun 2001 30424 38962 2973330 1 Jul 2001 29895 34621 3209831 1 Aug 2001 30401 38377 3226031 1 Sep 2001 28579 31737 2978330 1 Oct 2001 27183 56455 2845229 1 Nov 2001 27724 82811 3010730 1 Dec 2001 27726 10682 2900631 1 Jan 2002 28231 61713 3010831 1 Feb 2002 15090 10851 1919222 1 Mar 2002 26804 13190 3071431 1 Apr 2002 17286 3776 2098224 1 May 2002 25021 13134 2598326 1 Jun 2002 30051 21443 3143730 1 Jul 2002 28646 12573 3326231 1 1/27/2005 Page 1 of 5 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004Through Aug 2002 26691 17581 3208931 1 Sep 2002 23736 4870 2950830 1 Oct 2002 20008 9524 2753131 1 Nov 2002 13109 4401 1909518 1 Dec 2002 25404 11385 3082331 1 Jan 2003 23896 12220 3203731 1 Feb 2003 21340 12570 3001128 1 Mar 2003 23268 12460 3255231 1 Apr 2003 23106 13051 3326130 1 May 2003 21503 7488 3273631 1 Jun 2003 20717 7768 3264730 1 Jul 2003 22486 12268 3587931 1 Aug 2003 21333 17026 2497331 1 Sep 2003 18878 5087 3147330 1 Oct 2003 19326 8483 3170431 1 Nov 2003 18317 5366 3089530 1 Dec 2003 19099 10041 3303431 1 Jan 2004 19169 11553 3385631 1 Feb 2004 17880 2308 3208129 1 Mar 2004 18096 6045 3293231 1 Apr 2004 16897 8578 3256930 1 May 2004 17032 8152 3381630 1 Jun 2004 16762 3554 3597430 1 Jul 2004 15776 5869 3605530 1 Aug 2004 15288 9917 3482429 1 Sep 2004 16287 10361 3712430 1 Oct 2004 16590 9537 3381731 1 Nov 2004 16021 22004 3163230 1 Dec 2004 16576 26847 3042931 1 2216915 1902014 2344902Pad Total PBU_NIAKUK Apr 1994 260789 181141 71594 5 May 1994 496683 330249 753137 5 Jun 1994 480444 330204 5244137 6 Jul 1994 486623 343954 2997144 8 Aug 1994 409583 304611 1568122 7 Sep 1994 450444 361999 8493137 9 Oct 1994 322152 248933 21536112 9 Nov 1994 262057 215955 3184570 8 Dec 1994 214433 153799 2050561 9 Jan 1995 469797 368481 51346156 9 Feb 1995 511901 430200 57943177 10 Mar 1995 500532 411739 27460169 10 Apr 1995 625266 728930 32246199 12 May 1995 758837 927655 62536245 13 Jun 1995 462693 670944 31269178 13 Jul 1995 361196 482359 31832145 11 Aug 1995 572425 694584 46924201 11 Sep 1995 691355 762106 53171245 11 Oct 1995 762762 751350 73192278 11 1/27/2005 Page 2 of 5 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004Through Nov 1995 718678 598835 117985250 11 Dec 1995 608216 413362 139158213 11 Jan 1996 796900 532442 172759244 11 Feb 1996 955142 662477 192468282 11 Mar 1996 1033662 720475 165819288 11 Apr 1996 924639 656495 187975278 11 May 1996 963312 670219 200412273 11 Jun 1996 889689 857398 238313281 12 Jul 1996 964791 892222 323758327 12 Aug 1996 1047090 885072 340021343 13 Sep 1996 1115151 1044719 366547388 13 Oct 1996 979777 847392 395395292 14 Nov 1996 638170 497880 324991187 14 Dec 1996 628528 490404 363097186 14 Jan 1997 767670 694567 461289262 14 Feb 1997 758994 716457 371346264 14 Mar 1997 799101 702655 346422261 14 Apr 1997 848388 874872 414830267 15 May 1997 814548 1065040 421627290 15 Jun 1997 868770 1021291 445076340 15 Jul 1997 952831 1061718 388642323 15 Aug 1997 891836 716503 321769287 15 Sep 1997 962731 1098965 385628346 15 Oct 1997 902134 1053735 417428339 15 Nov 1997 832776 817959 415922320 15 Dec 1997 865125 698789 462951349 15 Jan 1998 679781 485459 310209282 15 Feb 1998 759413 550902 391024334 16 Mar 1998 963970 817973 464349405 16 Apr 1998 860673 647185 430178358 16 May 1998 886283 640125 407807350 16 Jun 1998 736478 730959 304324315 16 Jul 1998 801869 595089 261618301 16 Aug 1998 774633 586132 231846311 16 Sep 1998 773993 663767 205867287 16 Oct 1998 948032 764483 276291367 17 Nov 1998 924259 776075 261909391 17 Dec 1998 915336 738848 309578421 17 Jan 1999 893046 866912 305056427 17 Feb 1999 782334 756031 265851365 17 Mar 1999 856173 803792 254514403 17 Apr 1999 729512 657693 262284368 17 May 1999 835980 730281 262330399 17 Jun 1999 700682 593990 234344363 17 Jul 1999 857137 748902 290903377 17 Aug 1999 879291 858405 284422371 17 Sep 1999 724346 735073 214764303 17 Oct 1999 737209 570586 285225337 17 Nov 1999 668680 391978 317432298 17 Dec 1999 692555 416895 320803324 17 Jan 2000 679237 427691 327181318 15 1/27/2005 Page 3 of 5 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004Through Feb 2000 652852 402899 360904313 17 Mar 2000 680523 442145 432927343 17 Apr 2000 631014 443385 460715324 17 May 2000 615864 421960 379947327 17 Jun 2000 578001 398209 304392307 17 Jul 2000 584570 412064 339872310 17 Aug 2000 552723 382445 358530304 17 Sep 2000 508679 372837 462203287 17 Oct 2000 523522 383860 532632318 17 Nov 2000 492339 351460 410894308 17 Dec 2000 498068 342401 217293277 18 Jan 2001 501217 341172 314982319 18 Feb 2001 427785 305325 252466249 18 Mar 2001 450789 309606 288367282 18 Apr 2001 518533 513947 352898336 19 May 2001 662686 486897 303998340 18 Jun 2001 636022 467414 299004329 19 Jul 2001 644905 488188 359368368 20 Aug 2001 601324 486507 431760349 18 Sep 2001 545940 516553 327853343 18 Oct 2001 532085 574579 379642351 18 Nov 2001 522528 491363 415644345 18 Dec 2001 518397 395228 462750364 18 Jan 2002 535219 556444 525470392 19 Feb 2002 483131 446692 515968322 19 Mar 2002 506472 367555 563751347 19 Apr 2002 505690 342498 640874411 17 May 2002 532231 354380 741120432 17 Jun 2002 488031 355279 694669403 17 Jul 2002 458823 314728 689359400 17 Aug 2002 431653 298830 711845411 17 Sep 2002 394279 275507 811000374 17 Oct 2002 419697 290485 743722398 17 Nov 2002 365302 228371 710121364 17 Dec 2002 413336 272158 720398391 17 Jan 2003 393250 262681 791866372 17 Feb 2003 399104 258608 746660374 17 Mar 2003 425986 286220 951361425 17 Apr 2003 372996 273503 909661373 17 May 2003 399950 316094 965112424 17 Jun 2003 360390 298934 838556407 17 Jul 2003 368522 298103 819369378 17 Aug 2003 297656 229827 687023303 17 Sep 2003 328918 292212 873137397 17 Oct 2003 318490 235450 892912444 17 Nov 2003 312880 209966 782910415 17 Dec 2003 367851 300377 821296420 17 Jan 2004 357434 265760 845268434 17 Feb 2004 322595 263747 833700406 17 Mar 2004 416268 338898 911998453 17 Apr 2004 388286 300217 943863437 17 1/27/2005 Page 4 of 5 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004Through May 2004 336724 298270 1056684428 17 Jun 2004 311169 267818 1018363426 17 Jul 2004 295589 217568 1049299400 17 Aug 2004 263123 192159 898558354 17 Sep 2004 235945 185443 946579361 17 Oct 2004 250412 268457 1106160422 17 Nov 2004 215590 112803 1140293405 17 Dec 2004 207834 185853 1103099421 17 78050715 65538701 54874377Pad Total 80,267,630 67,440,715 57,219,279Pool Total 1/27/2005 Page 5 of 5 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells Producing PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004 Apr 1994 260789 181141 71594 5 May 1994 496683 330249 753137 5 Jun 1994 480444 330204 5244137 6 Jul 1994 486623 343954 2997144 6 Aug 1994 409583 304611 1568122 7 Sep 1994 450444 361999 8493137 6 Oct 1994 322152 248933 21536112 4 Nov 1994 262057 215955 3184570 4 Dec 1994 214433 153799 2050561 5 3383208 2470845 93656Year Total Jan 1995 469797 368481 51346156 7 Feb 1995 511901 430200 57943177 8 Mar 1995 500532 411739 27460169 8 Apr 1995 625266 728930 32246199 10 May 1995 758837 927655 62536245 11 Jun 1995 462693 670944 31269178 8 Jul 1995 361196 482359 31832145 5 Aug 1995 572425 694584 46924201 8 Sep 1995 691355 762106 53171245 9 Oct 1995 762762 751350 73192278 9 Nov 1995 718678 598835 117985250 10 Dec 1995 608216 413362 139158213 7 7043658 7240545 725062Year Total Jan 1996 796900 532442 172759244 9 Feb 1996 955142 662477 192468282 10 Mar 1996 1033662 720475 165819288 10 Apr 1996 924639 656495 187975278 10 May 1996 963312 670219 200412273 9 Jun 1996 889689 857398 238313281 12 Jul 1996 964791 892222 323758327 11 Aug 1996 1047090 885072 340021343 13 Sep 1996 1115151 1044719 366547388 13 Oct 1996 979777 847392 395395292 14 Nov 1996 638170 497880 324991187 7 Dec 1996 628528 490404 363097186 6 10936851 8757195 3271555Year Total 1/27/2005 Page 1 of 4 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells Producing PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004 Jan 1997 767670 694567 461289262 11 Feb 1997 758994 716457 371346264 10 Mar 1997 799101 702655 346422261 9 Apr 1997 848388 874872 414830267 10 May 1997 814548 1065040 421627290 11 Jun 1997 868770 1021291 445076340 14 Jul 1997 952831 1061718 388642323 12 Aug 1997 891836 716503 321769287 11 Sep 1997 962731 1098965 385628346 12 Oct 1997 902134 1053735 417428339 11 Nov 1997 832776 817959 415922320 12 Dec 1997 865125 698789 462951349 12 10264904 10522551 4852930Year Total Jan 1998 679781 485459 310209282 11 Feb 1998 759413 550902 391024334 13 Mar 1998 963970 817973 464349405 14 Apr 1998 860673 647185 430178358 13 May 1998 886283 640125 407807350 12 Jun 1998 736478 730959 304324315 13 Jul 1998 839622 650885 267463314 12 Aug 1998 840669 684963 276756342 14 Sep 1998 814847 718341 246033317 14 Oct 1998 1009344 814694 309429398 17 Nov 1998 987238 834353 280653421 16 Dec 1998 977600 804788 329860452 16 10355918 8380627 4018085Year Total Jan 1999 945345 921805 328692458 16 Feb 1999 823511 791731 290704393 15 Mar 1999 897635 830499 282743434 14 Apr 1999 766174 680513 292108398 15 May 1999 869811 751336 291259430 15 Jun 1999 738301 614046 265480393 15 Jul 1999 898683 769898 323467408 14 Aug 1999 918459 874101 316396402 14 Sep 1999 755078 755825 242624333 13 Oct 1999 774326 604050 318101368 14 Nov 1999 703342 425557 348170328 11 Dec 1999 727120 449825 352299355 12 9817785 8469186 3652043Year Total 1/27/2005 Page 2 of 4 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells Producing PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004 Jan 2000 713346 458857 359594349 12 Feb 2000 683693 429203 391020342 12 Mar 2000 713140 468978 465666374 13 Apr 2000 660963 458115 491260354 12 May 2000 615999 422325 380080333 12 Jun 2000 597123 421162 335563333 12 Jul 2000 614455 437505 376716341 11 Aug 2000 585109 409066 391270335 11 Sep 2000 540818 400151 494952317 11 Oct 2000 558293 413505 567326349 12 Nov 2000 523004 378690 441138338 12 Dec 2000 530232 371482 240870308 13 7336175 5069039 4935455Year Total Jan 2001 532180 370111 346967350 12 Feb 2001 457251 337161 283272277 10 Mar 2001 481085 337456 319806313 13 Apr 2001 541380 548820 377196363 14 May 2001 697556 528813 336733371 13 Jun 2001 666446 506376 328737359 13 Jul 2001 674800 522809 391466399 14 Aug 2001 631725 524884 464020380 13 Sep 2001 574519 548290 357636373 13 Oct 2001 559268 631034 408094380 14 Nov 2001 550252 574174 445751375 13 Dec 2001 546123 405910 491756395 13 6912585 5835838 4551434Year Total Jan 2002 563450 618157 555578423 14 Feb 2002 498221 457543 535160344 14 Mar 2002 533276 380745 594465378 15 Apr 2002 522976 346274 661856435 15 May 2002 557252 367514 767103458 15 Jun 2002 518082 376722 726106433 15 Jul 2002 487469 327301 722621431 15 Aug 2002 458344 316411 743934442 15 Sep 2002 418015 280377 840508404 15 Oct 2002 439705 300009 771253429 15 Nov 2002 378411 232772 729216382 15 Dec 2002 438740 283543 751221422 15 5813941 4287368 8399021Year Total 1/27/2005 Page 3 of 4 State of Alaska, Oil and Gas Conservation Commission Production History for: Month Oil (BBL)Gas (MCF)Water (BBLDaysProd Wells Producing PRUDHOE BAY, NIAKUK OIL Pool Jan 1990 Dec 2004 Jan 2003 417146 274901 823903403 14 Feb 2003 420444 271178 776671402 15 Mar 2003 449254 298680 983913456 15 Apr 2003 396102 286554 942922403 14 May 2003 421453 323582 997848455 15 Jun 2003 381107 306702 871203437 15 Jul 2003 391008 310371 855248409 16 Aug 2003 318989 246853 711996334 16 Sep 2003 347796 297299 904610427 16 Oct 2003 337816 243933 924616475 16 Nov 2003 331197 215332 813805445 16 Dec 2003 386950 310418 854330451 15 4599262 3385803 10461065Year Total Jan 2004 376603 277313 879124465 15 Feb 2004 340475 266055 865781435 15 Mar 2004 434364 344943 944930484 16 Apr 2004 405183 308795 976432467 16 May 2004 353756 306422 1090500458 16 Jun 2004 327931 271372 1054337456 16 Jul 2004 311365 223437 1085354430 16 Aug 2004 278411 202076 933382383 15 Sep 2004 252232 195804 983703391 15 Oct 2004 267002 277994 1139977453 15 Nov 2004 231611 134807 1171925435 15 Dec 2004 224410 212700 1133528452 15 3803343 3021718 12258973Year Total 80,267,630 67,440,715 57,219,279Pool Total 1/27/2005 Page 4 of 4 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, NIAKUK OIL Pool Apr 1995 34889 024 1 May 1995 131152 031 1 Jun 1995 445783 093 4 Jul 1995 83372 011 4 Aug 1995 1190081 091 4 Sep 1995 1390975 0114 4 Oct 1995 1394172 0116 4 Nov 1995 1581237 0120 4 Dec 1995 1544045 0124 4 Year Total 7795706 0 Jan 1996 1459293 0124 4 Feb 1996 1505111 0116 4 Mar 1996 1507778 0124 4 Apr 1996 1282022 0120 4 May 1996 1312363 0124 4 Jun 1996 1068555 097 4 Jul 1996 1397874 0124 4 Aug 1996 1212342 0112 4 Sep 1996 1414979 0120 4 Oct 1996 1512579 0122 4 Nov 1996 1322623 0118 4 Dec 1996 1474322 0124 4 Year Total 16469841 0 Jan 1997 1525749 0132 5 Feb 1997 1370764 0117 5 Mar 1997 1464285 0125 5 Apr 1997 1440652 0120 4 May 1997 1839888 0150 5 Jun 1997 1923857 0150 5 Jul 1997 1740628 0135 5 Aug 1997 2109742 0155 5 Sep 1997 1812862 0147 5 Oct 1997 2110667 0159 6 Nov 1997 1868173 0150 5 Dec 1997 1750017 0155 5 Year Total 20957284 0 2/3/2005 Page 1 of 4 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, NIAKUK OIL Pool Jan 1998 1949913 0124 4 Feb 1998 1897392 0140 5 Mar 1998 2112966 0155 5 Apr 1998 1788793 0120 4 May 1998 1767692 0131 5 Jun 1998 1643530 0164 6 Jul 1998 1497312 0126 5 Aug 1998 1833606 0171 6 Sep 1998 1586309 0174 6 Oct 1998 1324945 0159 6 Nov 1998 1561041 0168 6 Dec 1998 1910146 0186 6 Year Total 20873645 0 Jan 1999 1581016 0178 6 Feb 1999 1676126 0169 7 Mar 1999 1886684 0186 6 Apr 1999 1815542 0180 6 May 1999 1750049 0186 6 Jun 1999 1327320 0149 6 Jul 1999 1602282 0186 6 Aug 1999 1487429 0169 6 Sep 1999 1579164 0180 6 Oct 1999 1310673 0157 6 Nov 1999 1433979 0180 6 Dec 1999 1762434 0186 6 Year Total 19212698 0 Jan 2000 1553082 0180 6 Feb 2000 1634268 0174 6 Mar 2000 2032206 0186 6 Apr 2000 1770755 0180 6 May 2000 1620931 0186 6 Jun 2000 1682335 0180 6 Jul 2000 1770353 0186 6 Aug 2000 1193946 0186 6 Sep 2000 1593880 0180 6 Oct 2000 1549184 0186 6 Nov 2000 1371631 0180 6 Dec 2000 1226300 0175 6 Year Total 18998871 0 2/3/2005 Page 2 of 4 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, NIAKUK OIL Pool Jan 2001 1435230 0186 6 Feb 2001 1324957 0168 6 Mar 2001 1331373 0171 6 Apr 2001 1314756 0171 6 May 2001 1262977 0186 6 Jun 2001 1209128 0180 6 Jul 2001 1360473 0206 7 Aug 2001 1985674 0243 8 Sep 2001 1957650 0240 8 Oct 2001 1532556 0237 8 Nov 2001 1746967 0235 8 Dec 2001 1813213 0238 8 Year Total 18274954 0 Jan 2002 1861486 0220 8 Feb 2002 1495520 0224 8 Mar 2002 1466457 0221 8 Apr 2002 1487211 0240 8 May 2002 1616578 0248 8 Jun 2002 1758742 0255 9 Jul 2002 1124788 0192 9 Aug 2002 1469175 0247 8 Sep 2002 1462631 0240 8 Oct 2002 1506276 0247 8 Nov 2002 1398967 0227 8 Dec 2002 1476045 0220 8 Year Total 18123876 0 Jan 2003 1603881 0245 8 Feb 2003 1465415 0224 8 Mar 2003 1601634 0248 8 Apr 2003 1087736 0128 8 May 2003 1589290 0236 8 Jun 2003 1508952 0232 8 Jul 2003 1560328 0248 8 Aug 2003 1090486 0164 8 Sep 2003 1503095 0237 8 Oct 2003 1487716 0248 8 Nov 2003 1340864 0240 8 Dec 2003 1430416 0248 8 Year Total 17269813 0 2/3/2005 Page 3 of 4 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, NIAKUK OIL Pool Jan 2004 1494009 0248 8 Feb 2004 1127316 0187 8 Mar 2004 1242864 0210 7 Apr 2004 1257264 0220 8 May 2004 1357595 0248 8 Jun 2004 999793 0230 8 Jul 2004 1290497 0235 8 Aug 2004 1085240 0204 8 Sep 2004 502464 083 9 Oct 2004 1559300 0248 8 Nov 2004 1422033 0236 8 Dec 2004 1427865 0248 8 Year Total 14766240 0 Pool Total 172,742,928 0 2/3/2005 Page 4 of 4 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, LIS UNDEFINE WDSP Pool Aug 1987 129458 027 1 Sep 1987 176281 030 1 Oct 1987 161816 031 1 Nov 1987 175377 030 1 Dec 1987 22248 031 1 Year Total 665180 0 Jan 1988 241103 031 1 Feb 1988 231812 031 1 Mar 1988 276370 031 1 Apr 1988 278835 030 1 May 1988 292605 031 1 Jun 1988 287670 030 1 Jul 1988 240006 031 1 Aug 1988 342007 031 1 Sep 1988 306751 030 1 Oct 1988 331217 031 1 Nov 1988 343452 030 1 Dec 1988 365234 031 1 Year Total 3537062 0 Jan 1989 296817 031 1 Feb 1989 289814 028 1 Mar 1989 266595 031 1 Apr 1989 344332 030 1 May 1989 354983 031 1 Jun 1989 334859 030 1 Jul 1989 393784 031 1 Aug 1989 440595 031 1 Sep 1989 529047 030 1 Oct 1989 483456 031 1 Nov 1989 469344 030 1 Dec 1989 490023 031 1 Year Total 4693649 0 Jan 1990 578077 031 1 Feb 1990 522840 028 1 Mar 1990 517383 031 1 Apr 1990 384811 030 1 May 1990 368000 031 1 Jun 1990 321206 030 1 Jul 1990 416674 031 1 Aug 1990 432512 031 1 Sep 1990 401706 030 1 Oct 1990 416567 031 1 Nov 1990 362366 030 1 Dec 1990 361330 031 1 Year Total 5083472 0 2/1/2005 Page 1 of 6 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, LIS UNDEFINE WDSP Pool Jan 1991 345629 031 1 Feb 1991 295092 028 1 Mar 1991 370220 031 1 Apr 1991 334920 030 1 May 1991 383572 031 1 Jun 1991 343522 030 1 Jul 1991 362894 031 1 Aug 1991 381640 031 1 Sep 1991 361056 030 1 Oct 1991 403202 031 1 Nov 1991 355793 030 1 Dec 1991 343629 031 1 Year Total 4281169 0 Jan 1992 353094 031 1 Feb 1992 374538 029 1 Mar 1992 380861 031 1 Apr 1992 348209 030 1 May 1992 326067 031 1 Jun 1992 300080 030 1 Jul 1992 337444 031 1 Aug 1992 295184 031 1 Sep 1992 274341 030 1 Oct 1992 308038 031 1 Nov 1992 278336 030 1 Dec 1992 281665 031 1 Year Total 3857857 0 Jan 1993 270660 031 1 Feb 1993 255482 028 1 Mar 1993 298706 031 1 Apr 1993 274523 030 1 May 1993 287929 031 1 Jun 1993 61992 091 Jul 1993 231341 031 1 Aug 1993 222174 031 1 Sep 1993 207563 030 1 Oct 1993 151719 031 1 Nov 1993 217693 030 1 Dec 1993 232011 031 1 Year Total 2711793 0 2/1/2005 Page 2 of 6 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, LIS UNDEFINE WDSP Pool Jan 1994 245312 031 1 Feb 1994 251620 028 1 Mar 1994 318661 031 1 Apr 1994 333129 030 1 May 1994 356874 031 1 Jun 1994 356527 030 1 Jul 1994 375355 031 1 Aug 1994 357665 030 1 Sep 1994 229637 030 1 Oct 1994 286063 031 1 Nov 1994 364949 030 1 Dec 1994 427151 031 1 Year Total 3902943 0 Jan 1995 410828 031 1 Feb 1995 451221 028 1 Mar 1995 622548 031 1 Apr 1995 581024 030 1 May 1995 644828 031 2 Jun 1995 693025 030 1 Jul 1995 708169 031 1 Aug 1995 768911 031 1 Sep 1995 749544 030 1 Oct 1995 662844 031 1 Nov 1995 747283 030 1 Dec 1995 770890 031 1 Year Total 7811115 0 Jan 1996 799577 031 1 Feb 1996 945118 029 1 Mar 1996 1080508 031 1 Apr 1996 864782 030 1 May 1996 924810 031 1 Jun 1996 1199725 030 1 Jul 1996 1560688 031 1 Aug 1996 3125056 062 2 Sep 1996 1561372 060 2 Oct 1996 1775991 062 2 Nov 1996 1871219 060 2 Dec 1996 2236011 062 2 Year Total 17944857 0 2/1/2005 Page 3 of 6 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, LIS UNDEFINE WDSP Pool Jan 1997 2483020 062 2 Feb 1997 2275735 056 2 Mar 1997 2434544 062 2 Apr 1997 2620071 060 2 May 1997 2756903 062 2 Jun 1997 2732850 060 2 Jul 1997 2701388 062 2 Aug 1997 2319822 062 2 Sep 1997 2627166 060 2 Oct 1997 1007687 020 2 Nov 1997 3456389 060 2 Dec 1997 3344303 062 2 Year Total 30759878 0 Jan 1998 1855810 061 2 Feb 1998 2496402 056 2 Mar 1998 2769747 062 2 Apr 1998 2854359 060 2 May 1998 3084180 062 2 Jun 1998 3335449 060 2 Jul 1998 3483112 062 2 Aug 1998 3542723 062 2 Sep 1998 3147053 060 2 Oct 1998 3412491 062 2 Nov 1998 3185719 060 2 Dec 1998 3418603 062 2 Year Total 36585648 0 Jan 1999 3868093 062 2 Feb 1999 3524841 056 2 Mar 1999 4096802 062 2 Apr 1999 3717012 060 2 May 1999 3904186 062 2 Jun 1999 3219363 060 2 Jul 1999 3557780 062 2 Aug 1999 3714112 062 2 Sep 1999 3224600 059 2 Oct 1999 3684365 062 2 Nov 1999 3147015 060 2 Dec 1999 3754521 062 2 Year Total 43412690 0 2/1/2005 Page 4 of 6 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, LIS UNDEFINE WDSP Pool Jan 2000 3906004 062 2 Feb 2000 3659940 058 2 Mar 2000 3988893 062 2 Apr 2000 3824027 060 2 May 2000 3881112 062 2 Jun 2000 3931141 060 2 Jul 2000 4264494 062 2 Aug 2000 3043082 062 2 Sep 2000 2944765 060 2 Oct 2000 3278112 062 2 Nov 2000 2695490 060 2 Dec 2000 2880965 062 2 Year Total 42298025 0 Jan 2001 2865550 062 2 Feb 2001 2124159 049 2 Mar 2001 2738990 062 2 Apr 2001 3126532 060 2 May 2001 3117256 062 2 Jun 2001 3057264 060 2 Jul 2001 2784328 062 2 Aug 2001 2853665 054 2 Sep 2001 2011703 040 2 Oct 2001 2618062 062 2 Nov 2001 2829428 060 2 Dec 2001 3215665 062 2 Year Total 33342602 0 Jan 2002 2966337 062 2 Feb 2002 2509581 056 2 Mar 2002 2531852 062 2 Apr 2002 2112551 060 2 May 2002 2835824 062 2 Jun 2002 2347647 055 2 Jul 2002 2916181 062 2 Aug 2002 2285433 062 2 Sep 2002 2276126 060 2 Oct 2002 2469312 062 2 Nov 2002 2480753 060 2 Dec 2002 2717591 062 2 Year Total 30449188 0 2/1/2005 Page 5 of 6 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, LIS UNDEFINE WDSP Pool Jan 2003 2839951 062 2 Feb 2003 2623154 056 2 Mar 2003 2923936 062 2 Apr 2003 1577514 060 2 May 2003 2825367 062 2 Jun 2003 2752286 060 2 Jul 2003 2619542 062 2 Aug 2003 1507057 062 2 Sep 2003 2293646 060 2 Oct 2003 2785891 062 2 Nov 2003 2645097 060 2 Dec 2003 2690936 062 2 Year Total 30084377 0 Jan 2004 2640982 062 2 Feb 2004 2421840 058 2 Mar 2004 2739563 062 2 Apr 2004 2588887 060 2 May 2004 496273 062 2 Jun 2004 359001 060 2 Jul 2004 298457 062 2 Aug 2004 345334 060 2 Sep 2004 805935 060 2 Oct 2004 1070444 062 2 Nov 2004 1131205 060 2 Dec 2004 1219083 062 2 Year Total 16117004 0 Pool Total 317,538,509 0 2/1/2005 Page 6 of 6 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jun 1977 24 014 1 Aug 1977 116 031 1 Sep 1977 5996 061 Oct 1977 4018 082 Nov 1977 15271 021 2 Dec 1977 11336 027 2 Year Total 36761 0 Jan 1978 16047 023 2 Feb 1978 14489 018 2 Mar 1978 23778 037 2 Apr 1978 50185 049 2 May 1978 55681 048 2 Jun 1978 70174 0101 4 Jul 1978 96961 0106 4 Aug 1978 143915 0159 6 Sep 1978 182225 0165 6 Oct 1978 200149 0163 6 Nov 1978 234590 0153 6 Dec 1978 364987 0209 8 Year Total 1453181 0 Jan 1979 333153 0186 6 Feb 1979 205402 0159 6 Mar 1979 342092 0177 7 Apr 1979 423094 0194 7 May 1979 789621 0214 7 Jun 1979 650649 0160 7 Jul 1979 551123 0205 7 Aug 1979 623887 0192 8 Sep 1979 519533 0185 7 Oct 1979 628153 0165 7 Nov 1979 950728 0180 6 Dec 1979 950475 0241 8 Year Total 6967910 0 Jan 1980 1056360 0248 8 Feb 1980 828116 0229 8 Mar 1980 913644 0247 8 Apr 1980 873495 0235 8 May 1980 966967 0246 8 Jun 1980 900038 0217 8 Jul 1980 805475 0256 10 Aug 1980 775393 0277 10 Sep 1980 811550 0269 9 Oct 1980 806263 0245 9 Nov 1980 712271 0252 10 Dec 1980 1037675 0340 12 Year Total 10487247 0 2/1/2005 Page 1 of 9 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jan 1981 1030645 0286 10 Feb 1981 897687 0269 10 Mar 1981 1583960 0308 10 Apr 1981 745810 0288 10 May 1981 944951 0260 10 Jun 1981 920548 0239 9 Jul 1981 1015870 0264 9 Aug 1981 1031964 0261 10 Sep 1981 913994 0206 10 Oct 1981 1120701 0261 9 Nov 1981 955284 0269 9 Dec 1981 1139961 0320 12 Year Total 12301375 0 Jan 1982 1176058 0266 10 Feb 1982 1113410 0237 9 Mar 1982 1181865 0260 9 Apr 1982 1019870 0247 9 May 1982 1013475 0265 10 Jun 1982 935270 0242 9 Jul 1982 1010406 0216 9 Aug 1982 813890 0213 9 Sep 1982 685471 0219 9 Oct 1982 942130 0245 9 Nov 1982 741901 0233 9 Dec 1982 847515 0313 11 Year Total 11481261 0 Jan 1983 915216 0258 9 Feb 1983 732954 0229 9 Mar 1983 605179 0263 10 Apr 1983 606320 0249 10 May 1983 753514 0276 10 Jun 1983 583719 0244 10 Jul 1983 543251 0230 10 Aug 1983 337906 0181 9 Sep 1983 557100 0205 7 Oct 1983 629393 0216 9 Nov 1983 545013 0242 9 Dec 1983 728798 0313 11 Year Total 7538363 0 2/1/2005 Page 2 of 9 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jan 1984 591240 0254 9 Feb 1984 748856 0244 9 Mar 1984 749050 0233 9 Apr 1984 868403 0237 8 May 1984 842018 0245 8 Jun 1984 657818 0135 6 Jul 1984 637934 0176 6 Aug 1984 793503 0182 6 Sep 1984 977779 0180 6 Oct 1984 704279 0178 6 Nov 1984 1163384 0149 5 Dec 1984 1529912 0217 7 Year Total 10264176 0 Jan 1985 1218898 0132 5 Feb 1985 1897716 0137 5 Mar 1985 2038342 0155 5 Apr 1985 1361191 0149 5 May 1985 1729952 0155 5 Jun 1985 1836574 0150 5 Jul 1985 1648967 0150 6 Aug 1985 1875496 0124 5 Sep 1985 2114234 0150 5 Oct 1985 2429002 0155 5 Nov 1985 2339541 0150 6 Dec 1985 2768539 0186 6 Year Total 23258452 0 Jan 1986 3363067 0155 5 Feb 1986 1252054 0112 4 Mar 1986 1150628 0100 4 Apr 1986 1662727 0120 4 May 1986 1584015 0124 4 Jun 1986 1516993 0120 5 Jul 1986 1356647 0124 4 Aug 1986 1242331 0190 7 Sep 1986 1108333 0174 8 Oct 1986 1372134 0195 8 Nov 1986 1710503 0203 9 Dec 1986 2136407 0255 10 Year Total 19455839 0 2/1/2005 Page 3 of 9 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jan 1987 2426322 0194 8 Feb 1987 1907415 0164 8 Mar 1987 1787665 0189 8 Apr 1987 1901125 0178 8 May 1987 1690215 0193 8 Jun 1987 1751221 0194 8 Jul 1987 2109697 0140 6 Aug 1987 2129253 0131 6 Sep 1987 1353772 0174 8 Oct 1987 1352428 0224 8 Nov 1987 1448521 0215 9 Dec 1987 2219314 0245 10 Year Total 22076948 0 Jan 1988 2183650 0203 8 Feb 1988 2798182 0177 7 Mar 1988 3631650 0197 8 Apr 1988 3107008 0197 8 May 1988 3261334 0224 9 Jun 1988 3639921 0248 10 Jul 1988 4425072 0279 10 Aug 1988 4681090 0279 11 Sep 1988 5493891 0275 11 Oct 1988 6163695 0288 11 Nov 1988 7113825 0268 11 Dec 1988 7911400 0327 12 Year Total 54410718 0 Jan 1989 7596746 0316 12 Feb 1989 7148217 0287 12 Mar 1989 7709831 0305 12 Apr 1989 10183365 0324 13 May 1989 10511672 0344 13 Jun 1989 9271897 0302 13 Jul 1989 8528607 0291 13 Aug 1989 9233439 0327 12 Sep 1989 8806862 0301 13 Oct 1989 10628681 0347 12 Nov 1989 10092181 0314 11 Dec 1989 11602359 0337 11 Year Total 111313857 0 2/1/2005 Page 4 of 9 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jan 1990 11071550 0330 11 Feb 1990 10716147 0289 12 Mar 1990 12210485 0369 12 Apr 1990 8578669 0336 13 May 1990 10066426 0379 13 Jun 1990 8216402 0358 14 Jul 1990 9303909 0383 14 Aug 1990 9205078 0366 14 Sep 1990 9894936 0348 14 Oct 1990 12033347 0371 13 Nov 1990 10536981 0371 14 Dec 1990 11370769 0387 13 Year Total 123204699 0 Jan 1991 11694031 0322 11 Feb 1991 11122755 0296 12 Mar 1991 12019354 0353 12 Apr 1991 10669450 0346 12 May 1991 10726716 0343 12 Jun 1991 9524444 0389 13 Jul 1991 9281820 0375 13 Aug 1991 8803281 0379 13 Sep 1991 8025305 0323 13 Oct 1991 8238332 0306 11 Nov 1991 7797527 0309 11 Dec 1991 7828425 0313 11 Year Total 115731440 0 Jan 1992 7794178 0316 11 Feb 1992 7695525 0301 11 Mar 1992 7825986 0321 11 Apr 1992 7667838 0327 12 May 1992 7298609 0333 12 Jun 1992 8201627 0385 13 Jul 1992 7868039 0396 13 Aug 1992 6797642 0346 13 Sep 1992 7415754 0336 12 Oct 1992 7432898 0323 13 Nov 1992 6668762 0308 12 Dec 1992 6416632 0324 11 Year Total 89083490 0 2/1/2005 Page 5 of 9 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jan 1993 7087992 0310 11 Feb 1993 6848834 0290 11 Mar 1993 7731559 0326 11 Apr 1993 8061681 0316 11 May 1993 7723277 0341 11 Jun 1993 9007163 0374 13 Jul 1993 7869557 0355 13 Aug 1993 6982513 0346 12 Sep 1993 6737095 0330 12 Oct 1993 7303022 0338 11 Nov 1993 6703842 0311 11 Dec 1993 5729513 0257 9 Year Total 87786048 0 Jan 1994 4928114 0221 8 Feb 1994 6851976 0281 11 Mar 1994 7474070 0338 11 Apr 1994 6637532 0313 11 May 1994 7539329 0319 11 Jun 1994 6360818 0328 12 Jul 1994 3539785 0310 11 Aug 1994 3503552 0319 11 Sep 1994 4905305 0326 12 Oct 1994 4555947 0270 10 Nov 1994 4485769 0320 12 Dec 1994 5412026 0320 11 Year Total 66194223 0 Jan 1995 6621454 0319 11 Feb 1995 5509703 0282 11 Mar 1995 7620904 0333 12 Apr 1995 6447500 0343 12 May 1995 6681419 0364 12 Jun 1995 6513297 0380 13 Jul 1995 6563831 0364 13 Aug 1995 4938725 0357 12 Sep 1995 4332785 0353 13 Oct 1995 4652290 0346 13 Nov 1995 5086812 0347 12 Dec 1995 6587261 0361 12 Year Total 71555981 0 2/1/2005 Page 6 of 9 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jan 1996 7056034 0367 12 Feb 1996 7117641 0342 12 Mar 1996 7888967 0363 12 Apr 1996 6827592 0356 12 May 1996 5663958 0352 13 Jun 1996 7827567 0364 13 Jul 1996 6967246 0359 12 Aug 1996 4900409 0329 12 Sep 1996 5777161 0311 11 Oct 1996 5806923 0319 11 Nov 1996 5222613 0298 11 Dec 1996 6760233 0364 12 Year Total 77816344 0 Jan 1997 7102863 0350 12 Feb 1997 5964187 0273 12 Mar 1997 6271104 0320 11 Apr 1997 6992767 0348 12 May 1997 7352862 0339 11 Jun 1997 7973804 0330 11 Jul 1997 7469893 0335 11 Aug 1997 5939504 0339 11 Sep 1997 5812185 0329 11 Oct 1997 5225904 0336 11 Nov 1997 6089046 0333 12 Dec 1997 7639303 0372 12 Year Total 79833422 0 Jan 1998 7869228 0372 12 Feb 1998 6710090 0336 12 Mar 1998 5315506 0367 12 Apr 1998 6666241 0388 14 May 1998 9105356 0377 14 Jun 1998 8133439 0400 14 Jul 1998 7603239 0395 13 Aug 1998 6655314 0385 14 Sep 1998 5715405 0363 14 Oct 1998 7989021 0392 15 Nov 1998 7972745 0392 14 Dec 1998 7737343 0391 14 Year Total 87472927 0 2/1/2005 Page 7 of 9 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jan 1999 7265882 0401 14 Feb 1999 5869159 0367 15 Mar 1999 7183727 0404 15 Apr 1999 6094526 0391 15 May 1999 6259634 0403 15 Jun 1999 6313412 0387 14 Jul 1999 6248134 0343 13 Aug 1999 7047140 0373 14 Sep 1999 5107836 0329 14 Oct 1999 7245761 0374 14 Nov 1999 7211140 0352 14 Dec 1999 8349104 0374 13 Year Total 80195455 0 Jan 2000 8264654 0374 14 Feb 2000 7622673 0347 13 Mar 2000 7783396 0372 14 Apr 2000 7295103 0358 14 May 2000 7497121 0371 14 Jun 2000 6986088 0341 13 Jul 2000 6379962 0342 12 Aug 2000 5509072 0329 12 Sep 2000 6001699 0329 12 Oct 2000 5946001 0374 14 Nov 2000 6005143 0362 14 Dec 2000 6330210 0364 14 Year Total 81621122 0 Jan 2001 6815796 0374 13 Feb 2001 5614104 0338 14 Mar 2001 5177464 0371 15 Apr 2001 4787945 0359 13 May 2001 5260006 0346 14 Jun 2001 4609847 0323 13 Jul 2001 5236241 0334 13 Aug 2001 4512891 0347 12 Sep 2001 4313292 0300 13 Oct 2001 4872710 0340 13 Nov 2001 5300088 0358 14 Dec 2001 6156832 0370 14 Year Total 62657216 0 2/1/2005 Page 8 of 9 State of Alaska, Oil and Gas Conservation Commission Injection History for: Month Liquid (BBL)Gas (MCF)DaysInj Wells Injecting PRUDHOE BAY, PRUD UNDEFIN WDSP Pool Jan 2002 6040291 0369 14 Feb 2002 4507218 0334 14 Mar 2002 5512863 0362 14 Apr 2002 6460584 0349 14 May 2002 5993188 0358 14 Jun 2002 5300007 0358 12 Jul 2002 4705149 0337 13 Aug 2002 4870990 0366 15 Sep 2002 3931656 0311 13 Oct 2002 5228125 0339 13 Nov 2002 4819357 0318 12 Dec 2002 4715724 0350 14 Year Total 62085152 0 Jan 2003 4045202 0344 14 Feb 2003 3881272 0287 14 Mar 2003 3643710 0324 14 Apr 2003 3206247 0290 12 May 2003 2950665 0317 12 Jun 2003 2785427 0269 11 Jul 2003 2041653 0211 10 Aug 2003 2533250 0207 10 Sep 2003 2119317 0224 11 Oct 2003 2653587 0244 11 Nov 2003 2430529 0239 11 Dec 2003 3545408 0273 11 Year Total 35836267 0 Jan 2004 3257221 0265 11 Feb 2004 2193863 0239 10 Mar 2004 2434344 0246 10 Apr 2004 3277570 0246 11 May 2004 3647690 0255 11 Jun 2004 4143818 0259 10 Jul 2004 3790725 0248 10 Aug 2004 3195134 0237 12 Sep 2004 2924637 0217 11 Oct 2004 3929154 0234 10 Nov 2004 3246153 0231 9 Dec 2004 4183012 0243 11 Year Total 40223321 0 Pool Total 1,452,343,195 0 2/1/2005 Page 9 of 9 Niakuk & W. NiakukLOCATION MAPREPRODUCED WITH OPERATOR PERMISSIONN Niakuk & W. NiakukTOP KUPARUK DEPTH MAP0 1 mileREPRODUCED WITH OPERATOR PERMISSIONN Deadhorse Harrison Bay Dalton HwyTrans-AlaskaPipelineNuiqsut NPRA B e a u f o r t S e a NORTHSTAR UNIT COLVILLE RIVER UNIT MILNE POINT UNIT KUPARUK RIVER UNIT PRUDHOE BAY UNIT OOOGURUK UNIT TUVAAQ UNIT NIKAITCHUQ UNIT North Slope, Alaska DNR / DOG 2004 Niakuk Oil Pool Reference List PRUDHOE BAY, NIAKUK OIL Alaska Oil and Gas Conservation Commission, 1994, Conservation Order No. 329, Prudhoe Bay Field, Niakuk Oil Pool; available on line at http://www.aogcc.alaska.gov/orders/co/co300_399/co329.htm Alaska Oil and Gas Conservation Commission, 2005, Well and Production Information Database 5/31/2005 Page 1 of 1 Niakuk Oil Pool Summary The Niakuk Oil Pool is defined as the accumulation of oil and gas in the Kuparuk River Formation ("Kuparuk") that correlates with the interval between 12,318 feet and 12,942 feet measured depth (9351 feet and 9842 feet true vertical depth subsea).1 Regular production began from the pool in April 1994, and peaked at 37,172 barrels of oil per day in September 1996. Since 2000, Niakuk oil production has declined at an average rate of about 15% per year. During December 2004, Niakuk averaged 7,239 barrels of oil per day, 36,565 barrels of water per day, and 6,861 MCF of gas per day. 2 Lateral heterogeneity and abrupt facies change characterize the Kuparuk in the area. The Niakuk reservoir contains two elongated, oil-bearing segments that do not appear to be in hydraulic communication. Normal faults bound the two segments on the north and south, and numerous moderate-displacement normal faults cut the reservoir. The western segment ("Segment 1") contains approximately 545 acres. The eastern segment ("Segment 2") contains approximately 1,310 acres. Porosity in Segment 1 varies from 15.2% to 24.4%, permeability varies from 6 to 1,250 millidarcies, and oil saturation ranges from 66% to 75%. In Segment 2, porosity ranges from 19.5% to 23.0%, permeability varies from 1 to 3,008 millidarcies, and oil saturation ranges from 67% to 79%. Oil gravity measures 24.0 degrees API. A gas-oil-contact has not been identified in the Niakuk wells. Estimated original oil in place ("OOIP") for the Niakuk reservoir is 137.4 MMSTB (56.1 MMSTB in Segment 1 and 81.3 MMSTB in Segment 2) and original gas in place ("OGIP") is 90.9 BSCF. 3 SFD Revised May 31, 2005 1 Alaska Oil and Gas Conservation Commission, 1994, Conservation Order No. 329, Prudhoe Bay Field, Niakuk Oil Pool; available on line at http://www.aogcc.alaska.gov/orders/co/co300_399/co329.htm 2 Alaska Oil and Gas Conservation Commission, 2005, Well and Production Information Database 3 Alaska Oil and Gas Conservation Commission, 1994, Conservation Order No. 329, Prudhoe Bay Field, Niakuk Oil Pool; available on line at http://www.aogcc.alaska.gov/orders/co/co300_399/co329.htm AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD NIAKUK OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 329 1ACO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y 362 0ACO 15-Jan-03BP EXPLORATI Commingle Lisburne Well (K-317B) production with Prudhoe Bay Oil Pool Production. Y 14 0AAIO 31-Dec-01BP EXPLORATI Authorizes underground injection of fluids for enhanced oil recovery in the Niakuk Oil Pool. Y 329 5CO 12-Jan-98BP Expand the affected area of CO 329 which describes the pool rules for the Niakuk Oil Pool in the Prudhoe Bay Oil Field. Corrected 3/24/1998. Y 329 0ACO 04-Jun-96BP Requesting a change to Rule 10, CO #329 governing maximum production rate. Y 14 0AIO 22-Mar-95BP Authorizes underground injection for enhanced recovery in the Niakuk Oil Pool. Y 329 3CO 13-Jan-95ARCO ALASKA Amends Rule 6i of CO 329 to provide for semi-annual allocation process review in March and October. Y 343 0CO 02-Nov-94BP Exempt Niakuk oil pool from the requirements of 20 AAC 25.280. Y 329 0CO 11-Jan-94Arco-BP Niakuk Pool rules for development of the Niakuk Oil Pool within the Prudhoe Bay Field. The addendum includes Section 22 of ADL 34626 and Section 27 of ADL 34629 within Niakuk oil pool. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD NIAKUK OIL POOL Spacing Exception Orders 329 2CO 25-Feb-94BP Spacing exception for Niakuk 23 seawater injection well.Y 329 1CO 22-Feb-94BP Spacing exception for NK-16 Prudhoe Bay Unit.Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD NIAKUK OIL POOL Obsolete Orders 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N 14 2AIO 14-Nov-01BP EXPLORATI Continued authorization for interim injection into well NK-28.N 14 1AIO 20-Aug-01BP Interim authorization to inject in Niakuk well NK-28.N 329 4CO 22-Feb-96BP Temporary waiver of R 10, production rate limit.N 362 0CO 12-Sep-95Various Authorizes comingling of produced fluids at the Lisburne Production Facility from Lisburne, W Beach, N Prudhoe Bay, Niakuk, Pt McIntyre and Stump Is Oil Pools. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD NIAK IVSH-SR UNDEF OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 362 1ACO 03-Feb-04BP EXPLORATI Commingle production from Lisburne Well L2-14A with production from the Prudhoe Bay Oil Pool with terms and conditions. Y 10SIO 15-Jan-91BP EXPLORATI Authorizing the underground storage of liquid hydrocarbons by injection into the undefined Kuparuk reservior in the Pt McIntyre #6 well. Y 10AEO 11-Jul-86Standard Exempts portions of all aquifers in Western Operating Area & K Pad for Class II injection. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Spacing Exception Orders 436 0CO 15-Dec-98BP Spacing exception for Prudhoe Bay Unit V-200 deviated exploratory oil well to an undefined pool in the North West portion of the Prudhoe Bay Unit. Y 401 0CO 18-Aug-97BP Spacing exception for Niakuk 39 exploration oil well.Y 400 0CO 13-Aug-97ARCO ALASKA Spacing exception for West Niakuk No.4 delineation oil well in the Prudhoe Bay Unit. Y 398 0CO 04-Aug-97BP Spacing exception for Niakuk 41ST exploration oil well.Y 385 0CO 26-Nov-96ARCO ALASKA Spacing exception for West NIAKUK #3 delineation oil well in the Prudhoe Bay Unit Y 382 0CO 10-Sep-96ARCO ALASKA Spacing exception for the Point McIntyre P1-09 delineation oil well in Prudhoe Bay Unit. Y 356 0ACO 09-Aug-96BP Spacing exception for Niakuk 13 development oil well.Y 381 0CO 04-Jun-96ARCO ALASKA Spacing exception for W. Niakuk #2 delineation oil well.Y 379 0CO 15-Apr-96BP Spacing exception for Niakuk 14 development oil well Y 356 0CO 17-Apr-95BP Spacing exception for Niakuk 13 development oil well.Y 346 0CO 21-Nov-94BP Spacing exception for Niakuk #9 development oil well.Y 339 0CO 03-Oct-94BP Spacing exception for Niakuk 19 exploratory oil well.Y 328 0CO 10-Jan-94BP Spacing exception for Niakuk # 12A development oil well.Y 325 0CO 03-Dec-93BP Spacing exception for Niakuk # 10 well.Y 324 0CO 18-Nov-93BP Spacing exception - Niakuk #18 development oil well.Y 320 0CO 23-Sep-93BP Spacing exception to drill Niakuk #22 well.Y 316 0CO 25-May-93ARCO ALASKA Spacing exception for P1-05.Y 314 0CO 27-Apr-93ARCO ALASKA Spacing exception for P1-08, P1-13.Y 310 0CO 05-Feb-93ARCO ALASKA Spacing exception for P1-04, P1-16, P1-17, P1-21.Y 303 0CO 31-Dec-92ARCO ALASKA Spacing exception for North Prudhoe Bay St #3.Y 298 0CO 14-Aug-92ARCO ALASKA Spacing exception - wells P1-11, P1-21, P2-31, P2-47, P2-56.Y 296 0CO 03-Apr-92ARCO ALASKA Spacing exception - well P2-51.Y 294 0CO 20-Mar-92ARCO ALASKA Spacing exception - well P2-56.Y 293 0CO 20-Mar-92ARCO ALASKA Spacing exception - well P2-50.Y 291 0CO 11-Mar-92ARCO ALASKA Spacing exception - well P2-49 Y 264 0CO 14-Dec-90ARCO ALASKA Spacing exception for West Beach St #4 well.Y 249 0CO 23-Jan-90ARCO ALASKA Spacing exception for Point McIntyre #7.Y 248 0CO 17-Jan-90BP Spacing exception for Point McIntyre #6.Y 239 0CO 22-Feb-89ARCO ALASKA Spacing exception for Point McIntyre St #4.Y 207 1CO 21-May-85ARCO ALASKA Spacing exception for the Prudhoe Bay Unit L2-26 well in the Lisburn Oil Pool of the Prudhoe Bay Field. Y 167 0CO 17-Jul-80SOHIO REVOKED (SEE 341). Spacing exception for Prudhoe Bay Unit #Y- 1. N 160 0CO 06-Dec-79SOHIO REVOKED (SEE 341). Spacing exception for Prudhoe Bay Unit #R- 2. N 155 0CO 03-Jul-79SOHIO REVOKED (SEE 341). Spacing exception Sohio Prudhoe Bay Unit Q-7 well. N 148 0CO 04-Nov-77ARCO ALASKA REVOKED (SEE 341). Spacing exception for DS 3-4.N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Spacing Exception Orders 140 0CO 25-May-76ARCO ALASKA REVOKED (SEE 341). Spacing exception for Prudhoe Bay Well #E- 6. N 139 0CO 19-Jan-76ARCO ALASKA REVOKED (SEE 341). Spacing exception for DS 2-7.N 138 0CO 10-Nov-75GETTY OIL CO REVOKED (SEE 341). Spacing exception - 2-10-13 St #1.N 117 0ACO 07-Sep-73BP REVOKED (SEE 341). Spacing exception for 2 wells.N 117 0CO 05-Mar-73BP REVOKED (SEE 341). Spacing exception for 2 wells.N 97 0CO 16-Dec-70BP REVOKED (SEE 341). Spacing exception for Put River N-3. (23-18- 11-13) N 96 0CO 23-Sep-70ARCO ALASKA REVOKED (SEE 341). Spacing exception for DS 2-3. (23-31-11-15) N 87 0CO 20-Feb-70MOBIL OIL COR REVOKED (SEE 341). Spacing exception Kuparuk St #7-11-12. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Obsolete Orders 145 +02ACO 29-Nov-94ARCO ALASKA REVOKED (SEE 341). Flare additional vol, Flow station 2, Prudhoe Bay Unit-EOA N 145 +02ACO 23-Aug-94ARCO ALASKA REVOKED (SEE 341). Flare additional vol, Prudhoe Bay Unit-EOA N 145 +02ACO 18-Aug-94ARCO ALASKA REVOKED (SEE 341). Flaring additional vol, Central Compressor Plant- EOA. N 145 +02ACO 18-Jul-94BP REVOKED (SEE 341). Flaring additional vol GC #1 Prudhoe Bay Unit-WOA. N 207 16CO 15-Jun-94ARCO ALASKA Flare additional volume, Lisburne Prod Center N 145 +02ACO 06-Jun-94BP REVOKED (SEE 341). Flare addition vol, Prudhoe Bay Unit-WOA. N 145 +02ACO 17-May-94ARCO ALASKA REVOKED (SEE 341). Flaring additional volume EOA, Prudhoe Bay Unit. N 145 +02ACO 13-Apr-94ARCO ALASKA REVOKED (SEE 341). Flaring additional volume, Prudhoe Bay Unit- EOA. N 145 +02ACO 30-Dec-93BP REVOKED (SEE 341). Flaring addional volume, GC2 up to 150 MMCF. N 145 +02ACO 29-Dec-93BP REVOKED (SEE 341). Flaring additional volume Prudhoe Bay Unit- WOA GC #1. N 145 +02ACO 23-Nov-93BP REVOKED (SEE 341). Flaring additional volume, GC #1 Prudhoe Bay Unit-WOA. N 145 +02ACO 09-Nov-93BP REVOKED (SEE 341). Flaring additional volume up to 150 MMCF at Prudhoe Bay Unit-WOA GC #1. N 145 +02ACO 08-Nov-93BP REVOKED (SEE 341). Flaring additional volume GC #3, WOA.N 145 +02ACO 09-Sep-93ARCO ALASKA REVOKED (SEE 341). Flaring additional vol EOA, 2 MMCF at FS3 & 300 MMCF at CGF. N 145 +02ACO 07-Sep-93BP REVOKED (SEE 341). Flaring additinal vol up to 1200 MMCF gas at GS1. N 145 +02ACO 09-Jul-93BP REVOKED (SEE 341).Flaring up to 1200 MMCF gas over & above the design sfty flare of GC1. N 145 +02ACO 09-Jul-93BP REVOKED (SEE 341). Flaring up to 250 MMCF gas over & above the design sfty flare of GC3. N 145 +02ACO 15-Jun-93ARCO ALASKA REVOKED (SEE 341). Flaring up to 2 MMCF of gas over & above dsiignated safety flrs or FS 1 & 3; 5 MMCF gas over & above designated sfty flre of FS 2 & 500 MMCF of gas over & above the desig sfty flre of CGF. N 207 15CO 20-May-93ARCO ALASKA Flaring additional volume LPC, Prudhoe Bay Unit.N 145 +02ACO 07-Apr-93BP REVOKED (SEE 341). Flaring up to 900 MMCF of gas over and above the designated safety flare of GC3. Original AA signed 3/31/1993. N 145 +02ACO 31-Mar-93BP REVOKED (SEE 341). Flaring up to 300 MMCF of gas over and above the designated safety flare of GC1. N 145 +02ACO 23-Mar-93BP REVOKED (SEE 341). Flaring up to 100 MMCF of gas over and above the designated safety flare of GC3. N 145 +02ACO 04-Feb-93BP REVOKED (SEE 341). Flaring up to 1.3 MMCF of gas over and above the designated safety flare of GC2. N 145 +02ACO 30-Dec-92BP REVOKED (SEE 341). Flaring up to 5500 MMCF of gas over and above the designated safety flare of GC1. N 145 +02ACO 13-Nov-92BP REVOKED (SEE 341). Flaring up to 300 MMCF gas over and above the designated safety flare of GC1. N 145 +02ACO 07-Oct-92BP REVOKED (SEE 341). Flaring up to 1.1 MMCF gas GC3 WOA 10/7. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Obsolete Orders 145 +02ACO 15-Sep-92BP REVOKED (SEE 341). Flaring up to 1900 MMCF gas GC2 WOA 9/26. N 145 +02ACO 31-Aug-92BP REVOKED (SEE 341). Flaring up to 1.5 MMCF gas GC3 WOA 9/1. N 145 +02ACO 07-Aug-92BP REVOKED (SEE 341). Flaring up to 100 MMCF gas GCs WOA 8/9. N 145 +02ACO 28-Jul-92BP REVOKED (SEE 341). Flaring up to 150 MMCF gas GC2 WOA 7/20 [verbal bew 7/20]. N 145 +02ACO 28-Jul-92BP REVOKED (SEE 341). Flaring up to 100 MMCF gas GCs 1 & 2 WOA 8/7. N 145 99ACO 28-Jul-92ARCO ALASKA REVOKED (SEE 341). Flaring up to 100 MMCF gas FS 1,2,3 EOA; CGF/CCP WOA 8/7. N 145 98ACO 10-Jul-92BP REVOKED (SEE 341). Flaring up to 500 MMCF gas GS2 WOA 8/6. N 145 97ACO 27-Apr-92BP REVOKED (SEE 341). Flaring up to 5 MMCF gas GC1 WOA 4/27. N 145 96ACO 24-Apr-92ARCO ALASKA REVOKED (SEE 341). Flaring up to 15 MMCF gas CCP EOA 4/24. N 145 95ACO 16-Apr-92ARCO ALASKA REVOKED (SEE 341). Flaring up to 4 MMCF gas FS1; 20 MMCF FS2; 10 MMCF GS3; 10 MMCF CCP; 4/19. N 145 94ACO 16-Apr-92BP REVOKED (SEE 341). Flaring up to 100 MMCF gas GC3 WOA 5/8. N 207 13CO 31-Mar-92ARCO ALASKA Approves additional flaring at LPC up to 50 MMCF.N 145 93ACO 28-Feb-92BP REVOKED (SEE 341). Flaring up to 20 MMCF gas GC3 WOA 2/28. N 145 92ACO 10-Feb-92BP REVOKED (SEE 341). Flaring up to 10 MMCF gas GC3 WOA 2/10. N 145 91ACO 13-Jan-92BP REVOKED (SEE 341).Flaring up to 1 BCF gas GC3 WOA 1/17. N 145 90ACO 20-Nov-91BP REVOKED (SEE 341). Flaring up to 200 MMCF gas GC3 WOA 11/20. N 145 89ACO 06-Sep-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 3 MMCF gas FS3 EOA 9/7. N 145 88ACO 30-Aug-91BP REVOKED (SEE 341). Flaring up to 100 MMCF gas WOA GSs 9/1. N 145 87ACO 23-Aug-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 200 MMCF gas FSs 1,2,3: CGF; CCP EOA 8/25. N 145 86ACO 30-Jul-91BP REVOKED (SEE 341). Flaring up to 100 MMCF gas GSs 2 & 3 WOA 7/30. N 145 85ACO 26-Jul-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 300 MMCF gas FSs 1,2,3 EOA 8/6. {7/30 errata: eff date 7/29} N 145 84ACO 19-Jul-91BP REVOKED (SEE 341). Flaring up to 100 MMCF gas GC1 & 125 MMCF gas GC2 7/20. N 145 83ACO 15-Jul-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 2.5 MMCF gas FS3 EOA 7/17. N 145 82ACO 12-Jul-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 5 MMCF gas CCP EOA 7/12. N 145 81ACO 11-Jul-91BP REVOKED (SEE 341). Flaring up to 100 MMCF gas GC3 WOA 7/11. N 145 80ACO 05-Jun-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 350 MMCF gas CGF EOA 6/7. N 145 79ACO 24-Apr-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 3.3 MMCF gas FS3 4/27.N 145 78ACO 18-Apr-91BP REVOKED (SEE 341). Flaring up to 400 MMCF gas GC1 4/20. N 145 77ACO 15-Apr-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 30 MMCF gas CCP 4/15.N 145 76ACO 05-Apr-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 3 MMCF gas FS1 4/6.N 145 75ACO 13-Mar-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 6 MMCF gas FS3 - 2 tests: 3/14 & 3/21. N 145 74ACO 08-Mar-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 3 MMCF gas CCP 3/11/91. N 145 73ACO 11-Jan-91ARCO ALASKA REVOKED (SEE 341). Flaring up to 100 MMCF gas CGF 1/21/91. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Obsolete Orders 145 72ACO 21-Dec-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 50 MMCF gas CCP 12/21/90. N 145 71ACO 11-Dec-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 19 MMCF gas FS1 EOA 12/14/90. N 145 70ACO 06-Nov-90BP REVOKED (SEE 341). Flaring up to 700 MMCF gas GC3 11/7/90. N 145 69ACO 30-Oct-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 150 MMCF gas CCP & CGF 11/1/90. N 145 68ACO 23-Oct-90BP REVOKED (SEE 341). Flaring up to 750 MMCF gas GCs 1 & 2 10/25/90. N 145 67ACO 20-Sep-90BP REVOKED (SEE 341). Flaring up to 20 MMCF gas GCs 1 & 2 10/01/90. N 145 66ACO 20-Sep-90BP REVOKED (SEE 341). Flaring up to 50 MMCF gas Endicott prod fac. N 145 65ACO 17-Sep-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 750 MMCF gas - GCs 1,2,3; CCP & CGF. N 145 64ACO 12-Sep-90BP REVOKED (SEE 341). Flaring up to 500 MMCF gas - GCs 1,2,3. N 145 63ACO 12-Sep-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 15 MMCF gas FS#1.N 145 62ACO 05-Sep-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 1.5 MMCF gas WOA CG#2. N 145 61ACO 31-Aug-90ARCO ALASKA REVOKED. (see 341). Flaring up to 30 MMCF gas CGF. The original admin approval was approved 08/28/90. See letter from operator. N 145 60ACO 01-Aug-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 15 MMCF gas - FS#3.N 145 59ACO 20-Jul-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 10 MMCF gas - FS#2.N 145 58ACO 16-Jul-90BP REVOKED (SEE 341). Flaring up to 40 MMCF gas - GC#3.N 145 57ACO 12-Jul-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 40 MMCF gas - GCs 1,2,3. N 145 56ACO 07-Jun-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 2 MMCF gas at FS#2 & 3 MMSCF gas at FS#3. N 145 55ACO 06-Jun-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 40 MMCF gas - GCs 1,2,3. N 145 54ACO 25-May-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 15 MMCF gas - GCs 1,2,3. N 145 53ACO 18-May-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 2 MMCF gas - FS#3.N 145 52ACO 01-May-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 23 MMCF gas - GCs 1,2,3. N 145 51ACO 19-Apr-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 80 MMCF gas - Centrl Compressr Plant (CCP). N 145 50ACO 01-Mar-90BP REVOKED (SEE 341). Flaring up to 80 MMCF gas - GC#3.N 145 49ACO 29-Jan-90ARCO ALASKA REVOKED (SEE 341). Flaring up to 3 MMCF gas - FS#3.N 145 48ACO 19-Dec-89BP REVOKED (SEE 341). Flaring up to 2 BCF gas - GC#3.N 145 47ACO 01-Dec-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 13 MMCF gas - Central Gas Facility (CGF). N 145 46ACO 25-Oct-89BP REVOKED (SEE 341). Flaring up to 250 MMCF gas - GC#2.N 145 45ACO 18-Sep-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 900 MMCF gas - GC#3.N 145 44ACO 12-Sep-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 15 MMCF gas - Lisburne Prod Fac (LPC). N 145 43ACO 01-Sep-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 3.25 MMCF gas - FS-3.N 145 42ACO 07-Jul-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 35 MMCF gas - FS-2.N 145 41ACO 29-Jun-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 15 MMCF gas - FS-2.N 145 40ACO 04-May-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 4 MMCF gas - FS-1.N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Obsolete Orders 145 39ACO 03-Mar-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 50 MMCF gas - FS-2.N 145 38ACO 26-Jan-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 50 MMCF gas - FS-1.N 145 37ACO 06-Jan-89ARCO ALASKA REVOKED (SEE 341). Flaring up to 15,700 MMCF gas - FS-2.N 145 36ACO 05-Oct-88ARCO ALASKA REVOKED (SEE 341). Flaring up to 7 MMSCF gas - FS-1.N 145 35ACO 22-Sep-88ARCO ALASKA REVOKED (SEE 341). Flaring up to 2 MMSCF gas - FS-3.N 145 34ACO 31-May-88ARCO ALASKA REVOKED (SEE 341). Flaring up to 300 MMSCF gas - CGF.N 145 33ACO 22-Apr-88ARCO ALASKA REVOKED (SEE 341). Flaring up to 28 MMSCF gas - FS-2.N 145 32ACO 04-Apr-88ARCO ALASKA REVOKED (SEE 341). Flaring approved for approx 24 hrs up to 12.5 MMSCF FS-2. N 145 31ACO 10-Mar-88ARCO ALASKA REVOKED (SEE 341). Flaring apprved for 5 days up to 5 MMSCF gas - CCP. N 145 30ACO 03-Mar-88ARCO ALASKA REVOKED (SEE 341). Flaring approved for 10 days up to 5 MMSCF gas - CGF. N 145 29ACO 26-Feb-88ARCO ALASKA REVOKED (SEE 341). Flaring excess 5 MMSCF Prudhoe Bay Unit CCP. N 145 28ACO 27-Nov-87ARCO ALASKA REVOKED (SEE 341). Flaring excess vol 35 MMSCF FS-3.N 145 27ACO 28-Sep-87ARCO ALASKA REVOKED (SEE 341). Flaring addl vol 50 MMSCF for LPF shtdwn & restart; & addl 60 MMSCF for LPF rig-up/rig-down wkvr LGI-6. N 145 26ACO 23-Sep-87ARCO ALASKA REVOKED (SEE 341). Flaring addl vols for FS-1(15 MMSCF); FS- 2(10 MMSCF); FS-3(10 MMSCF); CGF(13 MMSCF). N 145 25ACO 10-Aug-87Standard REVOKED (SEE 341). Flaring excess vol not more than 50 MMSCF addl gas GC-1. N 207 8CO 23-Jul-87ARCO ALASKA Flaring additional 200 MMSCF @ LPF & LGI.N 145 24ACO 04-May-87ARCO ALASKA REVOKED (SEE 341). Flaring up to 30 MMSCF gas at FS3 until compression system repaired. Revoked by CO 341. N 145 23ACO 26-Mar-87STANDARD AL REVOKED (SEE 341). Flaring no more than 50 MMSCF addl gas - GC-1. N 145 22ACO 17-Mar-87ARCO ALASKA REVOKED (SEE 341). Flaring up to 30 MMSCF/day of MI until repairs made to 2nd MI compressor. N 207 6CO 12-Mar-87ARCO ALASKA Flaring total of 300 MMSCF during startup of Lisburne depropanizer. N 145 21ACO 19-Feb-87ARCO ALASKA REVOKED (SEE 341). Flaring additional 500 MMSCF gas CGF. N 207 5CO 06-Feb-87ARCO ALASKA Flaring duration during startup of Lisburne Prod Center.N 145 20ACO 28-Jan-87ARCO ALASKA REVOKED (SEE 341). Flaring an additional 1 MMSCF to complete GCF startup. N 145 19ACO 28-Jan-87STANDARD AL REVOKED (SEE 341). Flaring up to 50 MMSCF gas GC-1 1/26- 30/87. N 145 18ACO 13-Nov-86ARCO ALASKA REVOKED (SEE 341). Flaring up to 4.15 MMSCF gas from FS 1,2,3 starting 11/18/86. N 145 17ACO 10-Nov-86ARCO ALASKA REVOKED (SEE 341). Flaring up to 1.43 MMSCF gas 11/15/86- start up CGF-w/progress report by 1/15/87. N 145 16ACO 06-Oct-86Standard REVOKED (SEE 341). Flaring up to 4 MMSCF gas 10/16-22/86 GC 3. N 145 15ACO 23-Sep-86Standard REVOKED (SEE 341). Flaring up to 8 MMSCF gas from GCs 1,2 9/25, 9/27/86. N 145 14ACO 04-Sep-86ARCO ALASKA REVOKED (SEE 341). Flaring up to 20 MMSCF gas at FS3 9/5/86 for 7 days. N 207 4CO 14-Aug-86ARCO ALASKA Flaring 4.4 BSCF gas 60 days beginning 12/86.N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Obsolete Orders 145 13ACO 08-Aug-86Standard REVOKED (SEE 341). Flaring up to 25 MMSCF gas at GCs 1,2,3 8/7 to 9/20/86. N 145 12ACO 15-Jul-86ARCO ALASKA REVOKED (SEE 341). Flaring up to 55 MMSCF gas at FS 1, 7/16 to 8/7/86. N 145 11ACO 11-Jun-86ARCO ALASKA REVOKED (SEE 341). Flaring up to 34 MMSCF produced gas at FS3 for plant turnaround from 6/15/86-7/15/86. N 145 10ACO 09-Apr-86Standard REVOKED (SEE 341). Flaring up to 4 MMSCF gas to collect vibration data at GC-1/GC-3 to be complete by 4/17/86. N 145 9ACO 02-Apr-86Standard REVOKED (SEE 341). Flaring up to 25 MMSCF produced gas in 2 separate Flare/Relief tests GC2 complete by 04/10/86. N 145 8ACO 25-Mar-86Standard REVOKED (SEE 341). Flaring up to 37 MMSCF produced gas in 2 separate Flare/Relief tests GC2 & GC-3 complete in Mar. N 145 7ACO 13-Feb-86SOHIO REVOKED (SEE 341). Flaring up to 104MMSCF produced gas during 5 Flare/Relief tests at GS-1, GS-2, GC-3 by 02/17/86. N 174 0CO 01-Jul-81Arco-SOHIO REVOKED (SEE 341). Amends rule 2 of CO 145 to read as follows: No restrictions as to well spacing except no pay closer than 500 feet to boundry. N 145 6ACO 29-Oct-80ARCO ALASKA REVOKED (SEE 341). Flaring ext 145A.005 until 12-31-80 for large diameter flowline testing. N 145 5ACO 05-Aug-80ARCO ALASKA REVOKED (SEE 341). Flaring permitted to 275 MMSCF while testing large diameter flowline at low pressure. N 145 3ACO 08-Nov-78ARCO ALASKA MISSING FROM BOOK. REVOKED (SEE 341). Flaring to commission Flow Station #1. N 145 4ACO 08-Nov-78ARCO ALASKA REVOKED (SEE 341). Flaring permitted to commission Flow Station #3. N 145 1ACO 14-Sep-78Arco-SOHIO REVOKED (SEE 341). Flaring gas during testing of separator capacities. N 145 3CO 14-Mar-78ARCO ALASKA REVOKED (SEE 341). Flaring during commissioning Gathering Ctr #3. N 145 0ACO 12-Jan-78Arco-BP REVOKED (SEE 341). Flaring: Determine the amount of gas necessary for safety flares at the Prudhoe Bay Field and other matters related to gas flaring. N 98 8BCO 29-Mar-77BP REVOKED (SEE 341). Flaring of gas for purposes of commissioning Gathering Centers 1 & 2. N 98 7BCO 25-Jan-77ARCO ALASKA REVOKED (SEE 341). Flaring permitted for purging, commissioning and testing for G.C. 1 and 2. N 98 6BCO 15-Nov-76ARCO ALASKA REVOKED (SEE 341). Flaring permited for operational necessity flaring with restrictions. N 98 4BCO 11-Oct-76ARCO ALASKA REVOKED (SEE 341). Flaring permitted during pruging, commissioning and testing of Field Fuel Gas Unit. N 98 3BCO 01-Oct-76ARCO ALASKA REVOKED (SEE 341). Flaring permited, 600 MCFPD for safety flare at Field Fuel Gas Unit. N 91 0ECO 22-Sep-76ARCO ALASKA Amends CO 91D to remove throughout restrictions of COT.N 91 0DCO 27-Feb-76ARCO ALASKA COT throughput to 13000 BOPD.N 91 0CCO 18-Sep-75ARCO ALASKA REVOKED. Replaces CO 091A and 091B.N 130 0CO 15-Jan-75ARCO ALASKA REVOKED (SEE 341). Cancels CO 117 and 117A. Amends Rule 2 CO 098B Spacing. 3 POOLS N 91 0BCO 19-Nov-74ARCO ALASKA REVOKED. Amends Rule 2 of CO 91A. COT throughput up to 7200 BOPD and flaring to 3200 MCFPD. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD *No Pool* Obsolete Orders 91 0ACO 25-Feb-74ARCO ALASKA REVOKED. Approved to flare casinghead gas COT throughput to 6300 BOPD. N 98 2BCO 25-Jan-74BP REVOKED (SEE 341). Flaring for testing C-3.N 98 1BCO 13-Aug-73ARCO ALASKA REVOKED (SEE 341). Flaring of gas permitted from DS 1-1 testing. N 91 4CO 23-May-73ARCO ALASKA Extends CO 91 to 6/30/74.N 91 3CO 11-May-73ARCO ALASKA Allows testing of COT plant at higher rate.N 91 2CO 11-Aug-72ARCO ALASKA Extends CO 091 to 6/3/73.N 98 0CO 12-Mar-71ARCO ALASKA CO ORDER WAS NOT USED.N 91 1CO 27-Jan-71ARCO ALASKA Approves increase in crude oil produced for topping plant to 5,000 b/d. N 83 0CO 24-Sep-70ARCO ALASKA Conservation Order was not used. Three Conservation Order were issued simultaneously 83A, 83B, 83C. N 91 0CO 15-Jun-70ARCO ALASKA Approval to flare casinghead gas and inject fractions of crude oil into Prudhoe Bay Sadlerochit Oil Pool. Volume of crude oil produced for topping plant not to exceed 2750B/O. N 145 2ACO MISSING FROM BOOK. REVOKED (SEE CO 341).N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD AURORA OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 457 4aCO 10-Jan-05BP EXPLORATI Extend current pilot miscible injection (MI) operations in Aurora Oil Pool Wells S-112, S-110 and S-116. Y 457 4aCO 22-Dec-04BP EXPLORATI Extend current pilot miscible injection (MI) operations in Aurora Oil Pool Wells S-112, S-110 and S-116. Corrected 1/10/05. Y 457 0BCO 09-Aug-04BP EXPLORATI Pool rules for development of the Aurora Oil Pool.Y 457 0BCO 25-Jun-04BP EXPLORATI Order expanding the affected area of the Aurora Oil Pool, Prudhoe Bay. Y 22 2BAIO 22-Feb-04BP EXPLORATI Extend current pilot miscible injection (MI) operations in Aurora Oil Pool Wells S-112, S-110 and S-116.Corrected 1/10/05. Y 457 2ACO 11-Aug-03BP EXPLORATI Authorization of the PBU Western Operating Metering Plan for allocation of production from Aurora Oil Pool. Y 457 1ACO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Y 457 0ACO 15-May-03BP EXPLORATI Revision of Aurora Oil Pool Rules.Y 22 0BAIO 06-May-03BP EXPLORATI Amended AIO 22A. Erratum Notice was issued on May 12, 2003. Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y 457 0CO 07-Sep-01BP EXPLORATI Pool rules for development of the Aurora Oil Pool.Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD AURORA OIL POOL Obsolete Orders 457 3ACO 11-Dec-04BP EXPLORATI Authorization to conduct a pilot miscible injection project in Aurora Oil Pool Wells S-112, S-110 and S-116. Amended by CO 492. Superseded and Replaced by CO 457B. N 22 0CAIO 25-Jun-04BP EXPLORATI Order expanding the area in which injection is authorized in the Aurora Oil Pool, Prudhoe Bay Field 6 22 1BAIO 11-May-04BP EXPLORATI Authorization to conduct a pilot miscible injection project in Aurora Oil Pool Wells S-112, S-110 and S-116. Superseded by AIO 22B. N 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N 22 0AAIO 03-Apr-03BP EXPLORATI Amendment to AIO 22 for an order allowing underground injection of fluids for enhanced oil recovery in Aurora Oil Pool. Superseded by AIO 22B N 22 0AIO 07-Sep-01BP EXPLORATI Authorizes underground injection of fluids for enhanced oil recovery in Aurora Oil Pool. Corrected Order distributed 9/17/02. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD BOREALIS OIL POOL Current Orders 24 0AAIO 22-Apr-05BP EXPLORATI Order allowing underground injection of fluids for enhanced oil recovery in Borealis oil Pool, Prudhoe Bay Field. Y 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 471 5CO 01-Feb-05BP EXPLORATI Administrativbe Approval to extend pilot miscible operations in the Borealis Oil Pool. Y 24 3AIO 01-Feb-05BP EXPLORATI Administrativbe Approval to extend pilot miscible operations in the Borealis Oil Pool. Y 471 4CO 07-Oct-04BP EXPLORATI Approval for 120 day extension to the existing authorization to conduct a pilot miscible injection (MI) project in the Borealis Oil Pools in wells V-100, L-105 and L-108. Y 24 2AIO 07-Oct-04BP EXPLORATI Approval for 120 day extension to the existing authorization to conduct a pilot miscible injection (MI) project in the Borealis Oil Pools in wells V-100, L-105 and L-108. Y 24 1AIO 29-Jun-04BP EXPLORATI Authorization to conduct a pilot miscible injection (MI) project in Borealis Oil Pool Wells V-100, L-105 and L-108. Y 471 2CO 11-Aug-03BP EXPLORATI Authorization of the PBU Western Operating Metering Plan for allocation of production from Borealis Oil Pool. Y 471 1CO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y 471 0CO 29-May-02BP EXPLORATI Establish Pool Rules for Borealis Oil Pool.Y 24 0AIO 29-May-02BP EXPLORATI Authorization for water injection to enhance recovery from the Borealis Pool. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD BOREALIS OIL POOL Obsolete Orders 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD KUPARUK RIVER OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD KUPARUK RIVER OIL POOL Obsolete Orders 349 0ACO 23-Dec-96BP EXPLORATI Amend affected areas of Prudhoe Bay Unit Field, Kuparuk Riv Oil Pool as specified in CO 98-A and Kuparuk Riv Field, KR Oil Pool as specified in CO 173 & 349. See CO 432 for consolidated pool rules. N 348 0CO 16-Dec-94Arco-BP Eliminate the requirement for subsurface safety valves in wells drilled to the Kuparuk River oil pool. Amends CO 173. See CO 432. N 276 0CO 06-Aug-91ARCO ALASKA Amends CO 173 rule 9(b) and CO 230 rule 8(b). See CO 432.N 262 0CO 23-Oct-90ARCO ALASKA Repeal Rule 7, CO 173 periodic GOR testing. See CO 432 N 230 0CO 06-May-87ARCO ALASKA Amends Rule 8 CO 173. See CO 432.N 173 3CO 27-Apr-83ARCO ALASKA Approves additional surface casing.N 173 2CO 25-Feb-83ARCO ALASKA Permits additional types of surface casing to be used. 3 FIELDS N 173 1CO 19-Apr-82ARCO ALASKA Permits use of Arctic poleset or cement to anchor conductor pipe. N 173 0CO 06-May-81ARCO ALASKA Pool rules for the development of the Kuparuk River Field, Kuparuk Riv Oil Pool and the Prudhoe Bay Field, Kuparuk Riv Oil Pool. Amends CO 98A. 3 FIELDS See CO 432 and CO 349A. N 137 0CO 09-Jan-76Various REVOKED (SEE 341). Pool rules revised for Prudhoe Oil Pool, Prudhoe Bay Kuparuk River Oil Pool, and Prudhoe Bay Lisburne Oil Pool. Amends rules 3 and 4 of COs 098A, 098B, 083C. 3 POOLS N 98 0ACO 12-Mar-71Various Superceded by CO 457. Pool rules revised for Prudhoe Bay Kuparuk River Oil Pool. Replaces CO 083A. See CO 432 and 349A. Revoked by CO 457A on 5/15/2003. N 83 1ACO 24-Sep-70Various Extends CO 083A until 03/12/81.N 88 0CO 25-Mar-70PAN AMERICAN REVOKED (SEE 341). Denies request to modify CO 83A, 83B & 83C. re: Definition of Kuparuk Rv, Sadlerochit & Lisburne Pools. N 83 0ACO 12-Jan-70Various Pool rules and definition for Prudhoe Bay Field Kuparuk River Oil Pool. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD LISBURNE OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 517 0CO 07-Apr-04BP EXPLORATI Rules establishing a blow out prevention equipment pressure test interval of fourteen days applicable to drilling and completion operations within the Lisburne oil pool. Y 207 17CO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y 362 0ACO 15-Jan-03BP EXPLORATI Commingle Lisburne Well (K-317B) production with Prudhoe Bay Oil Pool Production. Y 41CAIO 02-Oct-02BP Modification of the annual reporting period for the Grind and Inject slurry operation at Prudhoe Bay. Y 40CAIO 19-Apr-00ARCO ALASKA Amend AIO 4 to initiate a Miscible Gas Enhanced Oil Recovery Project in the Point McIntyre Oil Pool and a Water and Gas Injection Enhanced Oil Project in the West Beach Oil Pool. Corrected. Y 207 0ACO 20-Dec-96ARCO ALASKA ELIM REQ FOR SSV IN WELLS DRILLED TO THE LISBURNE OIL POOL Y 342 0CO 02-Nov-94ARCO ALASKA Exempt Greater Pt. McIntyre, Prudhoe Bay Field, Pt McIntyre, Stump Island Oil Pool, and Lisburne Oil Pool from requirements of 20 AAC25.280. 2 FIELDS Y 207 14CO 17-Nov-92ARCO ALASKA Approves L5-24 downhole separation test. Apprvs annular production of gas during proposed tstg. Y 253 0CO 30-May-90ARCO ALASKA Approves commingling of Lisburne fluids L4-14.Y 207 11CO 29-Jun-89ARCO ALASKA Modifies Rule 10 CO 207 repressure monitoring program Lisburne Oil Pool. Y 222 0CO 05-Jan-87ARCO ALASKA Waivers required of CO 207, Rule 10(a) for a bottomhole pressure survey in Lisburne L1-1. Y 218 0CO 18-Sep-86ARCO ALASKA Expands the boundary of CO 207 Lisburne Pool Rules.Y 207 2CO 03-Oct-85ARCO ALASKA Approves an additional grade of csg for use as top 2 joints of surf csg for wells drilled Lisburne Oil Pool. Y 207 0CO 10-Jan-85ARCO ALASKA Revokes CO 083. Pool rules (new) for Lisburne Oil Pool in the Prudhoe Bay Unit Field. Amended by CO 492 and CO 517. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD LISBURNE OIL POOL Obsolete Orders 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N 40BAIO 13-Apr-98ARCO ALASKA Authorizes underground injection for purposes of disposal via slurry injection into three wells located at the G&I facility. N 362 0CO 12-Sep-95Various Authorizes comingling of produced fluids at the Lisburne Production Facility from Lisburne, W Beach, N Prudhoe Bay, Niakuk, Pt McIntyre and Stump Is Oil Pools. N 40AAIO 12-Aug-93ARCO ALASKA Amends AIO 004 to include the Pt. McIntyre, Stump Island & West Beach Oil Pools. Superceded by AIO 4C. N 207 10CO 12-Apr-89ARCO ALASKA Approves expansion of pilot waterflood on pad DSL2.N 207 9CO 24-Nov-87ARCO ALASKA Approves expansion pilot waterflood project including 3 injection wells (L2-6, L2-10, L2-16) & 1 prod well (L2-14). N 207 7CO 17-Apr-87ARCO ALASKA Approves pilot waterflood project in Lisburne Oil Pool on wells L2- 30, L2-24, L2-20 & L2-28. N 41AIO 28-Oct-86ARCO ALASKA Amends Rule 7 well integrity failure. Superceded by AIO 4C.N 40AIO 11-Jul-86ARCO ALASKA Authorizes underground injection for purposes of EOR and disposal in EOA. Superceded by AIO 4C. N 207 3CO 09-Jan-86ARCO ALASKA Approves Lisburne Interference Test to evaluate directional permeability. N 196 2CO 19-Dec-85ARCO ALASKA Request for extension of long-term testing well L2-6 (#1 S. Pt St well).. N 196 1CO 11-Dec-84ARCO ALASKA Exc to the 2000:1 gas-oil ratios limitations to permit additional long term test of #1 S. Pt St well. N 196 0CO 06-Feb-84ARCO ALASKA Exc to 20 AAC 25.240. Gas-Oil ratios for conducting long term prod test of S. Pt State Well #1. N 137 0CO 09-Jan-76Various REVOKED (SEE 341). Pool rules revised for Prudhoe Oil Pool, Prudhoe Bay Kuparuk River Oil Pool, and Prudhoe Bay Lisburne Oil Pool. Amends rules 3 and 4 of COs 098A, 098B, 083C. 3 POOLS N 88 0CO 25-Mar-70PAN AMERICAN REVOKED (SEE 341). Denies request to modify CO 83A, 83B & 83C. re: Definition of Kuparuk Rv, Sadlerochit & Lisburne Pools. N 83 0CCO 12-Jan-70Various REVOKED CO 207. Pool rules and difinition for Prudhoe Bay Field Lisburne Oil Pool N 207 12CO This number not used.N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD LISBURNE UNDEFINED WDSP POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD MIDNIGHT SUN OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 452 2CO 11-Aug-03BP EXPLORATI Authorization of the PBU Western Operating Metering Plan for allocation of production from Midnight Sun Oil Pool. Y 452 1CO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y 452 0CO 15-Nov-00CONOCOPHILLI Pool rules for the Midnight Sun Oil Pool. Amended by CO 492.Y 20 0AIO 28-Sep-00EVERGREEN R Authorizes underground injection of fluids for enhanced oil recovery in the Midnight Sun Oil Pool, Midnight Sun Participating Area, Prudhoe Bay Field. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD MIDNIGHT SUN OIL POOL Obsolete Orders 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD N PRUDHOE BAY OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 345 1CO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y 362 0ACO 15-Jan-03BP EXPLORATI Commingle Lisburne Well (K-317B) production with Prudhoe Bay Oil Pool Production. Y 345 0CO 16-Dec-94ARCO ALASKA Pool rules for development of the North Prudhoe Bay Oil Pool in the Prudhoe Bay Field. Amended by CO 492. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD N PRUDHOE BAY OIL POOL Obsolete Orders 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N 362 0CO 12-Sep-95Various Authorizes comingling of produced fluids at the Lisburne Production Facility from Lisburne, W Beach, N Prudhoe Bay, Niakuk, Pt McIntyre and Stump Is Oil Pools. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD ORION SCHRADER BLUFF OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 505 0CO 05-Jan-04BP EXPLORATI Orion Pool Rules.Y 26 0AIO 05-Jan-04BP EXPLORATI Area Injection Order for Orion Development Area.Y 10ERIO 16-Oct-03BP EXPLORATI Order authorizing a pilot waterflood project designed to test the potential for enhanced oil recovery in the Schrader Bluff formation. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PM STUMP ISLAND OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 503 0CO 16-Oct-03BP EXPLORATI Rules regulating sustained casing pressures in development wells within the Pt. McIntyre Field. Y 317 0BCO 19-Apr-00ARCO ALASKA Amends CO317A to initiate a Miscible Gas Enhanced Oil Recovery Project in the Prudhoe Bay Unit, Point McIntyre Oil Pool, North Slope, Alaska. Amended by Administrative Appropval 317B.001. Y 317 2CO 13-Jan-95ARCO ALASKA Period of time between formal process review meetings stipulated in Rule 10i of CO 317. Y 321 0CO 08-Oct-93Arco-BP Show cause hearing Pt McIntyre Oil Field rendered moot.Y 317 0CO 02-Jul-93ARCO ALASKA Pool rules established for Point McIntyre & Stump Island Oil Pools. Revised 09/10/93. Amended by CO 503. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PM STUMP ISLAND OIL POOL Obsolete Orders 317 0ACO 25-Apr-96ARCO ALASKA Amends CO #317 to include an Annual Reservoir Surveillance Report. N 317 1CO 14-Oct-93ARCO ALASKA Authorize commencement of regular production.N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PM UNDEFINED OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 503 0CO 16-Oct-03BP EXPLORATI Rules regulating sustained casing pressures in development wells within the Pt. McIntyre Field. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD POLARIS OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 25 3AIO 13-Nov-03BP EXPLORATI Authorizes amending Rule 4 that sets forth rules for conducting water injection into the Polaris oil Pool. Y 484 2CO 11-Aug-03BP EXPLORATI Authorization of the Prudhoe Bay Unit Western Operating Metering Plan for allocation of production from Polaris Oil Pool. Y 484 1CO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Y 25 2AIO 29-Jul-03BP EXPLORATI Authorizes underground injection of fluids for enhanced oil recovery in the Polaris Oil Pool W-215i. Y 25 1AIO 25-Jul-03BP EXPLORATI Authorizes injection of fluids for enhanced oil recovery in well W- 209i located in the Polaris Oil Pool. Y 25 0AIO 04-Feb-03BP EXPLORATI Authorizes the injection of fluids for enhanced oil recovery in the Polaris Oil Pool within Prudhoe Bay Unit. Y 484 0CO 04-Feb-03BP EXPLORATI Establishes Pool Rules for development of the Polaris Oil Pool.Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD POLARIS OIL POOL Obsolete Orders 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PRUDHOE OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 32 0OTH 16-Dec-04BP EXPLORATI Decision and Order Prudhoe Bay Well H-11.Y 42CAIO 07-Jun-04BP EXPLORATI Authorization for the underground injection of the waste stream generated from the external cleaning of aerial gas coolers at Flow Station 1 and 2 within the Eastern Operating Area of Prudhoe Bay Unit. Y 33AIO 07-Jun-04BP EXPLORATI Authorization for the underground injection of the waste stream generated from the external cleaning of aerial gas coolers at Flow Station 1 and 2 within the Eastern Operating Area of Prudhoe Bay Unit. Y 516 0CO 07-Apr-04BP EXPLORATI Rules establishing a blow out prevention equipment pressure test interval of fourteen days applicable to drilling and completion operations within the Prudhoe Bay oil pool. Y 341 1DCO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Amended by CO 492 and CO 516. Y 483 0CO 16-Jan-03BP EXPLORATI A rule to govern the operation of development wells in all pools within the Prudhoe Bay field with pressures communication or leakage in any casing, tubing, or packer. Y 41CAIO 02-Oct-02BP Modification of the annual reporting period for the Grind and Inject slurry operation at Prudhoe Bay. Y 341 0DCO 30-Nov-01BP EXPLORATI Amends CO 341C to provide for the Gas Cap water Inejction Project. Y 40CAIO 19-Apr-00ARCO ALASKA Amend AIO 4 to initiate a Miscible Gas Enhanced Oil Recovery Project in the Point McIntyre Oil Pool and a Water and Gas Injection Enhanced Oil Project in the West Beach Oil Pool. Corrected. Y 360 0CO 03-Nov-95Various A hearing to review the plan of development and operation and other agreements as they affect Natural Gas Liquid throughput, Miscible Injectant utilization and ultimate recovery from Prudhoe Bay. 8/9/1995 original date. Y 32AIO 27-Oct-86Standard Amends Rule 7 re/well integrity failure.Y 31AIO 15-Aug-86Standard Amends Rule 2 re/authorized injection strata.Y 30AIO 11-Jul-86Standard Authorizes underground injection for purpose of EOR and disposal in Western Operating Area & K Pad, Prudhoe Bay Unit. Y 128 0CO 03-Oct-74ARCO ALASKA Withdrawn Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PRUDHOE OIL POOL Obsolete Orders 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N 341 1CCO 22-Jun-99Arco-BP Amends Rule 6 CO 341C.N 40BAIO 13-Apr-98ARCO ALASKA Authorizes underground injection for purposes of disposal via slurry injection into three wells located at the G&I facility. N 341 0CCO 12-Jun-97Arco-BP Amends CO 341B, revoking rule 10 relating to facility gas flaring from the Prudhoe Oil Pool. See CO 341D. N 341 1BCO 29-Feb-96BP Postpones 1995 Prudhoe Bay Surveillance report until May 1, 1996. N 341 0BCO 17-Nov-95Arco-BP Revising rules 6(a) and 6(b) of CO 341A (consolidated) regarding annual pressure surveys in the Prudhoe Oil Pool. See CO 341D. N 341 0ACO 02-Oct-95Various CO 363 revised CO 341, Rule 5. Accordingly, the rules of CO 341, as modified, are reissued under CO 341A. See CO 341D. N 363 0CO 29-Sep-95Arco-BP Eliminates the requirements for Subsurface Safety Valve in wells drilled to the Prudhoe Oil Pool. Superceded by CO 341D N 341 0CO 02-Nov-94Arco-BP Consolidation of numerous individual conservation orders affecting the Prudhoe Bay Field, Prudhoe Oil Pool into one order. N 290 1CO 20-Oct-94BP REVOKED (SEE 341). Approves MI inj into the TRF Pad ext project of the PBMGP. N 333 0CO 28-Apr-94Arco-BP REVOKED (SEE 341). Amends Rule 5, CO 145, dealing with safety valve requirements. N 333 0CO 15-Apr-94Arco-BP REVOKED (SEE 341). Amends Rule 5, CO 145, dealing with safety valve requirements. N 279 1CO 20-Oct-93Arco-BP REVOKED (SEE 341). CO 279 supercedes requirement of 20 AAC 25.432 to file information for Form 10-413 monthly included in annual report. N 40AAIO 12-Aug-93ARCO ALASKA Amends AIO 004 to include the Pt. McIntyre, Stump Island & West Beach Oil Pools. Superceded by AIO 4C. N 213 40CO 05-May-93Arco-BP REVOKED (SEE 341). Waives requirements of Rule 11(a) of CO 165 for wells completed with a single perforated interval in th Prudhoe Oil Pool. N 213 38CO 02-Mar-93ARCO ALASKA REVOKED (SEE 341). Waives requirements of Rule 11(a) of CO 165 on wells DS 18-22, 18-26, 18-27, 15-28, 15-30 and 15-31. N 213 39CO 02-Mar-93Arco-BP REVOKED (SEE 341). Waives requirements of Rule 9(a) of CO 165 for a neutron log in the waterflood/EOR area of CO 290.. N 213 37CO 18-Dec-92ARCO ALASKA REVOKED (SEE 341). Waiver of Neutron logging requirements of Rule 9(a), CO 165 for Prudhoe Bay Unit wells 4-14A, 12-6A, 12-10A, 12-14st, 16-28, 16-29A, 16-30, 16-31, 17-15, 17-16, 17-19, 17-20 & 17-21. N 213 36CO 14-May-92ARCO ALASKA REVOKED (SEE 341). Waives productivity profiles required by Rule 11 CO 165 for DSs 4-34A, 4-36, 4-39. N 213 35CO 05-May-92ARCO ALASKA REVOKED (SEE 341). Waives productivity profiles DS 2-33, 2-34, 2-35, 5-20, 5-22, 5-30, 5-31, 5-32, 15-23, 15-24, 15-26, 15-27. N 279 0CO 31-Mar-92Arco-BP REVOKED (SEE 341). Repeals COs 186, 223, 224; Rule 7 CO 208; Rule 1 CO 195; Rule 9(c) & Rule 10 CO 165; consolidates surveilance rpts/enhanced recov proj rpts. N 290 0CO 21-Feb-92Arco-BP REVOKED (SEE 341). Expands Prudhoe Bay Miscible Gas Project & miscible gas injection; annual report required; revokes CO 195, Rule 2; operators investgate options to mitigate pressure decline/report progress annually. N 213 34CO 21-Oct-91ARCO ALASKA REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for DS 9-43. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PRUDHOE OIL POOL Obsolete Orders 213 33CO 11-Oct-91ARCO ALASKA REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for DS 9-39, 9-42, 9-44 & 9-47. N 213 32CO 17-Jul-91ARCO ALASKA REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for DS 11-22. N 213 31CO 03-Jul-91BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for F-46. N 195 4CO 26-Sep-90BP REVOKED (SEE 341). Apprvs mod to PBMGP; add 3 patterns to NW Fault Blk incl R-7, N-8, N-23 injection wells. N 258 0CO 12-Sep-90Arco-BP REVOKED (SEE 341). Exempting Prudhoe Bay Unit operators from requirements of 20 AAC 25.280(a). N 259 0CO 12-Sep-90Arco-BP REVOKED (SEE 341). Amend rule 7 of CO 145.N 213 30CO 09-Jul-90ARCO ALASKA REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for DS 18-23. N 213 29CO 19-Jan-90BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for Prudhoe Bay Unit F-34. N 213 28CO 30-Oct-89ARCO ALASKA REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for DS 14-40. N 213 27CO 25-Oct-89BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for Prudhoe Bay Unit F-22. N 213 26CO 16-Oct-89BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for Prudhoe Bay Unit Z-9 & Z-29. N 220 1CO 11-Sep-89Arco-BP REVOKED (SEE 341). Waives press surv requrmnt of Rule 6b CO 165 as amended by Rule CO 220. N 213 25CO 14-Aug-89BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for Prudhoe Bay Unit F-32 & F-35. N 213 24CO 01-Aug-89BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for Prudhoe Bay Unit W-03. N 213 23CO 31-Jul-89ARCO ALASKA REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for Prudhoe Bay Unit 15-10A, 18-21, 18-25. N 213 22CO 25-Jul-89BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for Prudhoe Bay Unit Z-23 & Z-26. . N 213 21CO 10-Jul-89ARCO ALASKA REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for DS 18-18. N 213 20CO 21-Jun-89BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 in Prudhoe Bay Unit for well Y-25. N 213 19CO 07-Jun-89BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 in Prudhoe Bay Unit for wells W-5 & W-21. N 213 18CO 10-May-89BP REVOKED (SEE 341). Waives productivity profile required by Rule 11A CO 165 for wells Z-24, Z-25, Z-32. N 213 17CO 22-Feb-89BP REVOKED (SEE 341). Waives productivity profile requrmnt Rule 11A CO 165 for wells W-1, W-27, W-31, W-34, Z-14 &Z-15. N 213 16CO 26-Jan-89ARCO ALASKA REVOKED (SEE 341). Waives production profile requrmnt Rule 11A CO 165 for wells DSs 18-13, 18-16. N 238 0CO 22-Nov-88ARCO ALASKA REVOKED (SEE 341). Amends CO 145, Rule 3 re casing & cementing requirements. N 213 15CO 24-Oct-88STANDARD AL REVOKED (SEE 341). Waives productivity profile requrmnt Rule 11A CO 165 for wells H-23, H-29, H-30. N 187 2CO 12-Jul-88ARCO ALASKA Amends COs 187 & 187.001 to document modifications to operation of FS#3IP. N 223 2CO 12-Jul-88ARCO ALASKA REVOKED (SEE 341). Amends CO 223 re FS3IP to include Sag Riv Intervals w/in Prudhoe Oil Pool, increasing pore vol by 65 mil RB. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PRUDHOE OIL POOL Obsolete Orders 195 3CO 12-Jul-88Arco-SAPC Amends COs 195, 195.001, 195.002 to document further modifications to PBMGP. N 213 14CO 22-Jun-88STANDARD AL REVOKED (SEE 341). Waives productivity profile requrmnt Rule 11A CO 165 for wells E-25, E-28. N 213 13CO 04-Feb-88ARCO ALASKA REVOKED (SEE 341). Waives productivity profile requrmnt Rule 11A CO 165 for well DSs 11-26. N 213 12CO 25-Jan-88ARCO ALASKA REVOKED (SEE 341). Waives productivity profile requrmnt Rule 11A CO 165 for wells DSs 4-20, 4-23, 4-29. N 213 11CO 16-Nov-87ARCO ALASKA REVOKED (SEE 341). Waives productivity profile requrmnt Rule 11A CO 165 for wells DSs 18-9, 18-14, 18-19. N 213 10CO 11-Aug-87ARCO ALASKA REVOKED (SEE 341). Waives productivity profile requrmnt Rule 11A CO 165 for well DS 4-26. N 213 9CO 01-Jun-87ARCO ALASKA REVOKED (SEE 341). Waives productivity profile requrmnt Rule 11A CO 165 for wells DS 11-16, 11-17, 11-18, & 11-23. N 213 8CO 26-Feb-87ARCO ALASKA REVOKED (SEE 341). Waives productivity profile for well DS 16-24. N 213 7CO 20-Feb-87STANDARD AL REVOKED (SEE 341). Waives prod profiles for F-23, G-23, B-28; prod prof for B-26 postponed. N 195 2CO 05-Feb-87Arco-SAPC Amends CO 195 & 195.001 to accommodate ops modifications to Miscible Gas Project. N 187 1CO 26-Jan-87Arco-SAPC Amends Co 187 to accommodate op modifications to FS#3 injection project. N 223 1CO 07-Jan-87ARCO ALASKA REVOKED (SEE 341). Amends findings & conclusions of CO 186 due to revision of volumetric determinations of FS3IP. N 224 0CO 05-Jan-87Arco-SAPC REVOKED (SEE 341). Amends Rule 7, CO 208.N 223 0CO 05-Jan-87Arco-SAPC REVOKED (SEE 341). Amends CO 186 regarding semi-annual reporting. N 213 6CO 26-Nov-86ARCO ALASKA REVOKED (SEE 341). Waives prod profile requirement in well DS9- 34. N 213 5CO 13-Nov-86ARCO ALASKA REVOKED (SEE 341). Waives productivity profile required by Rule 11a CO 165 in wells DS4-22 and 4-28. N 220 0CO 03-Nov-86Arco-SAPC REVOKED (SEE 341). Revise pressure survey rules in COs 165, 208, and 213. N 213 4CO 28-Oct-86ARCO ALASKA REVOKED (SEE 341). Approves substitution of static surv for trans surv, waives prod profile, DS 4-18, 4-21, 4-24, 4-27. N 41AIO 28-Oct-86ARCO ALASKA Amends Rule 7 well integrity failure. Superceded by AIO 4C.N 219 0CO 13-Oct-86ARCO ALASKA REVOKED (SEE 341). Amends Rule 1, CO 145A re flaring for Central Gas Facility Prudhoe Bay Field, EOA. N 213 3CO 10-Oct-86ARCO ALASKA REVOKED (SEE 341). Approves substitution of static surv for trans surv for 3-31, 3-32, 3-33. N 213 1CO 29-Sep-86Standard REVOKED (SEE 341). Waives productivity profile for wells JX-2, B- 30, Y-20, G-29, G-27, Y-21. N 213 2CO 29-Sep-86ARCO ALASKA REVOKED (SEE 341). Approves substitution of static surv for trans surv, waives prod profile, DS 11-9. N 40AIO 11-Jul-86ARCO ALASKA Authorizes underground injection for purposes of EOR and disposal in EOA. Superceded by AIO 4C. N 165 13CO 27-Nov-85SOHIO REVOKED (SEE 341). Approves addition of K-4 & U-8 to key well roster for monitoring of pressure. N 214 0CO 21-Oct-85Arco-SOHIO REVOKED (SEE 341). Amends CO 145 Rule 15, to permit production to exceed current allowable annual production to provide a "contingency production account." N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PRUDHOE OIL POOL Obsolete Orders 213 0CO 08-Oct-85Arco-SOHIO REVOKED (SEE 341). Amends Rules 6 & 11 of CO 165 & Rule 6 of CO 208 to allow administrative approval for extension / waiver pressure surveys, GOC monitoring and production profiles. N 208 1CO 05-Apr-85ARCO ALASKA REVOKED (SEE 341). Updating key well designations for resvr press surveillance. N 208 0CO 30-Jan-85Arco-SOHIO REVOKED (SEE 341). Amends Rule 6, 9 and 10 CO 165 and Rule 2 of CO 192.. N 192 9CO 27-Dec-84ARCO ALASKA REVOKED (SEE 341). Substitute fall-off press surv in 5 injection wells for transient press survs in prod well as required by Rule 6(d) CO 165. N 165 12CO 03-Dec-84SOHIO AA 165.12A REVOKED (SEE 341). Replace gas-oil contact monitoring key well F-3 with well E-15. N 192 8CO 16-Nov-84ARCO ALASKA REVOKED (SEE 341). Substitute static press surv for transient press surv on Prudhoe Bay Unit DS3-11, & DS 16-11 exception to Rule 6(c) CO 165. N 192 7CO 07-Nov-84ARCO ALASKA REVOKED (SEE 341). Substitute static press surv for transient press surv on Prudhoe Bay Unit DS 1-4, DS 4-5, DS 11-2,& DS 13-3 exception to Rule 6(c) CO 165. N 165 12CO 01-Nov-84ARCO ALASKA REVOKED (SEE 341). Substituted Prudhoe Bay Unit 5-4 & 7-25 for Prudhoe Bay Unit 5-12 & 7-11. N 165 11CO 23-Oct-84SOHIO REVOKED (SEE 341). Substituted Prudhoe Bay Unit F-9 for Prudhoe Bay Unit J-5 in gas-oil contact monitoring program. N 192 6CO 23-Oct-84SOHIO REVOKED (SEE 341). Substitute static press surv for transient press surv on Prudhoe Bay Unit A-23, B-9, & Y-8, exception to Rule 6(d) CO 165. N 204 0CO 14-Sep-84ARCO ALASKA REVOKED (SEE 341). Exception to Rule 3 of CO 145 for Prudhoe Bay Unit DS 15-8. N 200 0CO 20-Aug-84ARCO ALASKA REVOKED (SEE 341). Exception to rule 3 CO 145 for Prudhoe Bay Unit DS 15-7. N 192 5CO 20-Jul-84SOHIO REVOKED (SEE 341). Substitute static press surv for transient press surv on Prudhoe Bay Unit A-15, A-18, E-7 & X-7, exception to Rule 6(d) CO 165. N 199 0CO 13-Jul-84ARCO ALASKA REVOKED (SEE 341). Exception to rule 3 CO 145 for Prudhoe Bay Unit DS 15-17. N 192 4CO 10-Jul-84ARCO ALASKA REVOKED (SEE 341). Substitute static press surv for a transient press surv on Prudhoe Bay Unit DS 6-9, exception to Rule 6(d) CO 165. N 192 3CO 14-Jun-84ARCO ALASKA REVOKED (SEE 341). Approval to waive taking initial productivity profile on DS 13-2A until well cement channel has been repaired. N 192 2CO 25-May-84SOHIO REVOKED (SEE 341). Substitute btmhole pressure surv in lieu of transient press surv for A-5, E-1, H-8, N-7 & Q-3. N 165 10CO 11-May-84ARCO ALASKA REVOKED (SEE 341). Substituted Prudhoe Bay Unit Q-7 for Prudhoe Bay Unit Q-2 in gas-oil contact monitoring porgram. N 165 9CO 10-May-84ARCO ALASKA REVOKED (SEE 341). Substituted Prudhoe Bay Unit well 7-19 for current key well 7-17 in GOC monitoring key well. N 165 8CO 27-Apr-84ARCO ALASKA REVOKED (SEE 341). Substituted Prudhoe Bay Unit well 6-23 & 7- 17 for current key wells 6-3 & 2-6 in GOC monitoring key well program. N 195 1CO 09-Apr-84Arco-SAPC Amends Findings No. 9 and No. 12 of 195cf. REVOKED (SEE 341). N 192 1CO 29-Mar-84ARCO ALASKA REVOKED (SEE 341). Substitute static btm press surv for trnsient press sruvs on DS 3-10, 3-15, 3-18, 4-1, 4-5, 4-11, 9-1, 9-6, 9-10, 16-1, 16-9. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PRUDHOE OIL POOL Obsolete Orders 195 0CO 05-Mar-84Arco-SOHIO Approval of Prudhoe Bay Miscible Gas Project as a Qualified Tertiary Recovery Project for Crude Oil Windfall Profil Tax of 1980. REVOKED (SEE 341). N 197 0CO 14-Feb-84Arco-SOHIO REVOKED (SEE 341). Amends Rule 8 (venting & flaring) of CO 145, Rule 8. N 165 7CO 19-Jan-84ARCO ALASKA REVOKED (SEE 341). Substituted Prudhoe Bay Unit well 15-13 for key well 15-12 in pressure monitoring porgram. N 194 0CO 18-Jan-84ARCO ALASKA REVOKED (SEE 341). Admends CO 185 reference GOR test. N 165 6CO 21-Nov-83ARCO ALASKA REVOKED (SEE 341). Substituted Prudhoe Bay Unit wells 6-8, 4-1, 1-10 for current key wells 1-8, 4-13, 5-7 in GOC monitoring key well program. N 192 0CO 21-Oct-83ARCO ALASKA REVOKED (SEE 341). Exception to 2 rules in CO 165 & provides for administrative relief of same two rules. N 189 0CO 09-May-83ARCO ALASKA REVOKED (SEE 341). Allows running of a static bh press surv of DS 4-5. N 188 0CO 22-Apr-83ARCO ALASKA REVOKED (SEE 341). Allows key wells (DS 3-11, 16-11, 17-5) to be surveyed by a bh static press method. N 165 5CO 09-Dec-82ARCO ALASKA REVOKED (SEE 341). Prudhoe Oil Pool - approves three key wells in pressure survey program. N 186 0CO 29-Nov-82ARCO ALASKA REVOKED (SEE 341). Approval of Flow Station #3 injection project as an additional recovery method. N 187 0CO 29-Nov-82ARCO ALASKA Approves the FS#3 injection project as aqualified tertiary recovery project. N 185 0CO 28-Sep-82ARCO ALASKA REVOKED (SEE 341). Amends Rule 7, CO 145 regarding the gas/oil ratio tests. N 165 4CO 12-Aug-82ARCO ALASKA REVOKED (SEE 341). Substituted DS 2-6 for DS 5-5 as a key well in the GOC monitoring program. N 184 0CO 12-Aug-82ARCO ALASKA REVOKED (SEE 341). Permits open hole completion DS 18-06. N 183 0CO 25-Jun-82ARCO ALASKA REVOKED (SEE 341). Permits openhole completion for Prudhoe Bay Unit DS 18-2. N 181 0CO 05-May-82ARCO ALASKA REVOKED (SEE 341). Permits openhole completion for Prudhoe Bay Unit DS 2-22. N 180 0CO 26-Apr-82ARCO ALASKA REVOKED (SEE 341). Permits openhole completion for Prudhoe Bay Unit DS 15-5. N 145 4CO 19-Apr-82ARCO ALASKA REVOKED (SEE 341). Should be 145.004. Permits use of Arctic poleset or cement to anchor conducting pipe. N 178 0CO 22-Mar-82ARCO ALASKA REVOKED (SEE 341). Permits openhole completion for Prudhoe Bay Unit DS 15-3. N 165 3CO 19-Feb-82ARCO ALASKA REVOKED (SEE 341). Adds 16-11 and 17-5 as key wells in pressure monitoring program. N 165 2CO 22-Jun-81ARCO ALASKA REVOKED (SEE 341). Replace DS 4-7 with DS 4-13 as a key well in G/O contact monitoring program. N 165 1CO 08-Jun-81ARCO ALASKA REVOKED (SEE 341). Changes four designate key wells.N 169 0CO 29-Aug-80ARCO ALASKA REVOKED (SEE 341). Permits ARCO to complete DS 17-4 with open hole compltn - exception to CO 145. N 165 0CO 06-Jun-80Various REVOKED (SEE 341). Changed Pool rules 6,9,10 & 11 of CO 145. Plans of the Prudhoe Bay Unit operators for water-injection, to present the results of model studies, and to consider changes to certain rules of CO 145. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PRUDHOE OIL POOL Obsolete Orders 166 0CO 02-Jun-80ARCO ALASKA REVOKED (SEE 341). Cancelled CO 164 and exempted ARCO from the casing requirements of Rule 3(f) CO 145 for an open hole completion of DS 2-14. N 164 0CO 03-Apr-80ARCO ALASKA REVOKED (SEE 341). Exempted ARCO from the casing requirements of Rule 3(f) CO 145 for gravel pack completion of DS 2-14. Cancelled by CO 166. N 145 2CO 10-Nov-77ARCO ALASKA REVOKED (SEE 341). Extension of CO 145.001.N 145 1CO 07-Sep-77ATLANTIC RICH Revoked (see 341). Commissioning and testing of PBF Gas Unit Central Compression plant, flow station #1, #2 and related flare system. N 145 0CO 01-Jun-77ARCO ALASKA REVOKED (SEE 341). Pool rules (new) & amending existing rules for Prudhoe Oil Pool - cancels CO 098B, 130 & Rule 2 CO 137. Portions of CO 98B and 137 are made part of this order. N 141 1CO 25-May-77ARCO ALASKA REVOKED (SEE 341). Temporary provision to increase gas produced from gas cap for commissioning purposes. N 143 0CO 01-Dec-76ARCO ALASKA REVOKED (SEE 341). Surf csg exc of Prudhoe Bay Unit DS 4-6. N 98 5BCO 14-Oct-76ARCO ALASKA REVOKED (SEE 341). 098B.004 will expire on 11/15/76.N 141 0CO 22-Sep-76ARCO ALASKA REVOKED (SEE 341). Authorize production of gas cap for fuel purposes. N 137 0CO 09-Jan-76Various REVOKED (SEE 341). Pool rules revised for Prudhoe Oil Pool, Prudhoe Bay Kuparuk River Oil Pool, and Prudhoe Bay Lisburne Oil Pool. Amends rules 3 and 4 of COs 098A, 098B, 083C. 3 POOLS N 118 1CO 23-Apr-75BP REVOKED (SEE 341). Authorize increase of gas production up to 20 MMCFD from gas cap. N 118 0CO 08-Mar-73BP REVOKED (SEE 341). Permits increase of gas cap production for power generation from C-3 to fuel generators for field-wide electrical use, inject liquids back into reservoir. N 98 0BCO 12-Mar-71Various REVOKED (SEE 341). Pool rules for Prudhoe Oil Pool, Prudhoe Bay Field. Amended by CO 349A. N 83 1BCO 24-Sep-70Various REVOKED (SEE 341). Extends CO 083B until 03/12/71.N 88 0CO 25-Mar-70PAN AMERICAN REVOKED (SEE 341). Denies request to modify CO 83A, 83B & 83C. re: Definition of Kuparuk Rv, Sadlerochit & Lisburne Pools. N 83 0BCO 12-Jan-70Various REVOKED (SEE 341). Pool rules and difinition for Prudhoe Bay Field Sadlerochit Pool. N 85 0CO 18-Dec-69ARCO ALASKA REVOKED (SEE 341). Slip joint casing for DS#1 well 32-7-10-25. N 78 0CO 14-Aug-69ARCO ALASKA REVOKED (SEE 341). Slip joint csg for DS#1 well 32-8-10-15.N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PRUDHOE UNDEFINED WDSP POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PT MCINTYRE OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 317 1BCO 10-Dec-03BP EXPLORATI Authorization to commingle a portion of production from the Pt. McIntyre Oil Pool, Drillsite PM2 with production from the Prudhoe Oil Pool and process the fluids within the PBU IPA. Y 503 0CO 16-Oct-03BP EXPLORATI Rules regulating sustained casing pressures in development wells within the Pt. McIntyre Field. Y 362 0ACO 15-Jan-03BP EXPLORATI Commingle Lisburne Well (K-317B) production with Prudhoe Bay Oil Pool Production. Y 41CAIO 02-Oct-02BP Modification of the annual reporting period for the Grind and Inject slurry operation at Prudhoe Bay. Y 40CAIO 19-Apr-00ARCO ALASKA Amend AIO 4 to initiate a Miscible Gas Enhanced Oil Recovery Project in the Point McIntyre Oil Pool and a Water and Gas Injection Enhanced Oil Project in the West Beach Oil Pool. Corrected. Y 317 0BCO 19-Apr-00ARCO ALASKA Amends CO317A to initiate a Miscible Gas Enhanced Oil Recovery Project in the Prudhoe Bay Unit, Point McIntyre Oil Pool, North Slope, Alaska. Amended by Administrative Appropval 317B.001. Y 317 2CO 13-Jan-95ARCO ALASKA Period of time between formal process review meetings stipulated in Rule 10i of CO 317. Y 342 0CO 02-Nov-94ARCO ALASKA Exempt Greater Pt. McIntyre, Prudhoe Bay Field, Pt McIntyre, Stump Island Oil Pool, and Lisburne Oil Pool from requirements of 20 AAC25.280. 2 FIELDS Y 321 0CO 08-Oct-93Arco-BP Show cause hearing Pt McIntyre Oil Field rendered moot.Y 317 0CO 02-Jul-93ARCO ALASKA Pool rules established for Point McIntyre & Stump Island Oil Pools. Revised 09/10/93. Amended by CO 503. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD PT MCINTYRE OIL POOL Obsolete Orders 40BAIO 13-Apr-98ARCO ALASKA Authorizes underground injection for purposes of disposal via slurry injection into three wells located at the G&I facility. N 317 0ACO 25-Apr-96ARCO ALASKA Amends CO #317 to include an Annual Reservoir Surveillance Report. N 362 0CO 12-Sep-95Various Authorizes comingling of produced fluids at the Lisburne Production Facility from Lisburne, W Beach, N Prudhoe Bay, Niakuk, Pt McIntyre and Stump Is Oil Pools. N 317 1CO 14-Oct-93ARCO ALASKA Authorize commencement of regular production.N 40AAIO 12-Aug-93ARCO ALASKA Amends AIO 004 to include the Pt. McIntyre, Stump Island & West Beach Oil Pools. Superceded by AIO 4C. N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD UGNU UNDEFINED WTRSP POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD W BEACH OIL POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 311 1BCO 29-Jul-03BP EXPLORATI Conservation Order 492 amended this conservation order. This amendment further clarifies paragraph 6 of that order. Y 362 0ACO 15-Jan-03BP EXPLORATI Commingle Lisburne Well (K-317B) production with Prudhoe Bay Oil Pool Production. Y 41CAIO 02-Oct-02BP Modification of the annual reporting period for the Grind and Inject slurry operation at Prudhoe Bay. Y 311 0BCO 19-Apr-00ARCO ALASKA Amends pool rules for W Beach Oil Pool to authorize waterflood enhanced oil recovery project. Y 40CAIO 19-Apr-00ARCO ALASKA Amend AIO 4 to initiate a Miscible Gas Enhanced Oil Recovery Project in the Point McIntyre Oil Pool and a Water and Gas Injection Enhanced Oil Project in the West Beach Oil Pool. Corrected. Y AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD W BEACH OIL POOL Obsolete Orders 492 0CO 26-Jun-03BP EXPLORATI Order adopting rules regulating sustained annulus pressures in Prudhoe Bay development wells. Superseded and Replaced by CO 457B. N 311 8CO 01-Aug-00BP EXPLORATI For an extension to 8-31-00 of waiver from the requirements of 20 AAC 25.240 and by inference, an exc to rule 10, West Beach Pool, Prudhoe Bay Field, North Slope Alaska. N 311 7CO 07-Jul-99ARCO ALASKA For a one year waiver from the requirements of 20 AAC 25.240 and by inference, an exc to rule 10, West Beach Pool, Prudhoe Bay Field, North Slope Alaska. N 40BAIO 13-Apr-98ARCO ALASKA Authorizes underground injection for purposes of disposal via slurry injection into three wells located at the G&I facility. N 311 0ACO 20-Dec-96ARCO ALASKA Eliminates requirements of subsurface safety values in wells drilled to W Beach Oil Pool. N 311 6CO 15-Jul-96ARCO ALASKA To waive the gas-oil ratio limit for West Beach Well No. 4.N 311 5CO 06-Jun-96ARCO ALASKA Change Rule 7(g) CO 311, West Beach Oil Pool, Prudhoe Bay Field, North Slope, Alaska. N 362 0CO 12-Sep-95Various Authorizes comingling of produced fluids at the Lisburne Production Facility from Lisburne, W Beach, N Prudhoe Bay, Niakuk, Pt McIntyre and Stump Is Oil Pools. N 311 4CO 11-Jul-95ARCO ALASKA Gas oil ratio limit waiver for West Beach No. 4.N 311 3CO 13-Jan-95ARCO ALASKA Period of time between formal process review meeting stipulated in rule 7i of CO 311. N 311 2CO 06-May-94ARCO ALASKA Gas oil ratio limit waiver for West Beach # 4.N 311 1CO 24-Aug-93ARCO ALASKA Gas oil ratio limit waiver for West Beach #4.N 40AAIO 12-Aug-93ARCO ALASKA Amends AIO 004 to include the Pt. McIntyre, Stump Island & West Beach Oil Pools. Superceded by AIO 4C. N 311 0CO 25-Feb-93ARCO ALASKA Pool rules for West Beach Oil Pool.N AAOrder No.DateOperator Description Current PRUDHOE BAY FIELD W BEACH TERTIARY UNDEF WTRSP POOL Current Orders 547 0CO 11-Feb-05 Adoption of rules regulating the use of multiphase meters for well testing and allocation of production. Y 048121620Producing Oil WellsPRUDHOE BAY FIELD, NIAKUK OIL POOL020406080100Water Cut ( % )PRUDHOE BAY FIELD, NIAKUK OIL POOL0.10.51510501005001000Cum Oil Prod ( MMbbl )Cum Water Prod ( MMbbl )Cum Gas Prod ( MMMcf )PRUDHOE BAY FIELD, NIAKUK OIL POOL199495969798992000010203040.10.5151050100Oil Rate (CD) ( Mbbl/d )Water Rate (CD) ( Mbbl/d )Gas Rate (CD) ( MMcf/d )Gas / Oil Ratio ( Mcf/bbl )PRUDHOE BAY FIELD, NIAKUK OIL POOL 1994959697989920000102030410501005001000NGL Rate (CD) ( bbl/d )PRUDHOE BAY FIELD, NIAKUK OIL POOL - NGL PRODUCTION 0510Wells on Gas InjectionWells on Water InjectionPRUDHOE BAY FIELD, NIAKUK OIL POOL - EOR INJECTION0.10.51510501005001000Cum Gas Inj ( MMMcf )Cum Water Inj ( MMbbl )PRUDHOE BAY FIELD, NIAKUK OIL POOL - EOR INJECTION199596979899200001020304151050100Gas Inj Rate (CD) ( MMcf/d )Water Inj Rate (CD) ( Mbbl/d )PRUDHOE BAY FIELD, NIAKUK OIL POOL - EOR INJECTION 051015Disposal WellsPRUDHOE BAY FIELD, PRUDHOE UNDEFINED WASTE DISPOSAL POOL1510501005001000500010000Cum Water Disp ( MMbbl )PRUDHOE BAY FIELD, PRUDHOE UNDEFINED WASTE DISPOSAL POOL1977 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 2000 01 02 03 0410-1100101102103104105106Waste Disposal Rate ( bbl/d )PRUDHOE BAY FIELD, PRUDHOE UNDEFINED WASTE DISPOSAL POOL 0.01.02.03.0Disposal WellsPRUDHOE BAY FIELD, LISBURNE UNDEFINED WASTE DISPOSAL POOL1510501005001000Cum Water Disp ( MMbbl )PRUDHOE BAY FIELD, LISBURNE UNDEFINED WASTE DISPOSAL POOL1987 88 89 90 91 92 93 94 95 96 97 98 99 2000 01 02 03 04102103104105106Waste Disposal Rate ( bbl/d )PRUDHOE BAY FIELD, LISBURNE UNDEFINED WASTE DISPOSAL POOL