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Home My WebLink AboutCO 341 BConservation Order Cover Page XHVZE This page is required for administrative purposes in managing the scanning process. It marks the extent of scanning and identifies certain actions that have been taken. Please insure that it retains it's current location in this file. Conservation Order Category Identifier Organizing RESCAN [] Color items: [] Grayscale items: [] Poor Quality Originals: [] Other: NOTES: DIGITAL DATA [] Diskettes, No. [] Other, No/Type OVERSIZED (Scannable with large plotter/scanner) [] Maps: [] Other items OVERSIZED (Not suitable for plotter/scanner, may work with 'log' scanner) [] Logs of various kinds Other ' BY: .... /~~'~MARIA Scanning Preparation TOTAL PAGES ,~'~ 7 BY: "~ARIA Production Scanning, Stage I PAGE COUNT FROM SCANNED DOCUMENT: C~' '~' PAGE COUNT MATCHES NUMBER IN SCANNING PREPARATION' _.~ YES NO Stage 2 IF NO IN STAGE '1, PAGE(S) DISCREPANCIES WERE FOUND: YES NO (SCANNING IS COMPL"E'FC--A,T--T.H~POINT UNLESS SPECIAL A'I-rENTION IS REQUIRED ON AN INDIVIDUAL PAGE BASIS DUE TO QUALITY, GRAYSCALE OR COLOR I~a~ES) General Notes or Comments about this Document: 5/21/03 ConservOrdCvrPg.wpd C7 INDEX CONSERVATION ORDER NO. 341B 1.) October 3, 1995 BP Exploration request for spacing exception 2.) October 26, 1995 BP Exploration tabulation of 1994-1995 pressure surveys 3.) February 23, 1996 BP Exploration application for extension of deadline for CO 279 Prudhoe Bay Surveillance Report 4.) March 29, 2008 Notice of Hearing, Affidavit of Publication Conservation Order No. 341B STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION 3001 Porcupine Drive Anchorage, Alaska 99501-3192 Re~ The Application of ARCO Alaska, ) Inc. and BP Exploration (Alaska) Inc. ) requesting administrative changes to ) Conservation Order 341A, Rules 6(a) ) and 6(b) regarding annUal pressure ) surveys in the Prudhoe Oil Pool. ) Conservation Order No. 341B Prudhoe Bay Field Prudhoe Oil Pool November '17, 1995 IT APPEARING THAT 1. By letter dated October 3, 1995, ARCO Alaska, Inc. and .BP Exploration (Alaska), Inc. requested changes to Rule 6 (a) and 6 (b). 2. The Commission reviewed the request and available data and proceeded administratively to change Rule 6 (a) and (b). 3. Changes to Rule 6(a) and 6(b) were consolidated with Rules previously approved for the Prudhoe Oil Pool in Conservation Order 341A (consolidated). iF.INDINGS: 1. Conservation Order 341A Rule 6(e) provides Commission the means to administratively approve time extensions and 'waive requirements of Rule 6 and may administratively order additional surveys under part (b). 2. Surveys are currently required in each new well prit~r to regular production. Rule 6(b) requires a minimum of 95 and 87 (182 total) surveys for the WOA and EOA respectively. The minimums were established in 1986. 3. 'Nearly 5300 pressure surveys have been conducted in the Prudhoe Oil Pool since iproduction began in 1.977. Since the minimum requirements were established in 1986, approximately 2400 survey have been done through 1994, an average of 267 per year. 4. The number of surveys run each year may be determined based on data needs or may be set arbitrarily. 5. Development drilling typically occurs consecutively on a pad and numerous initial pressure surveys may be concentrated near that pad. 6. Data concentrated near one pad may be redundant and waste opportunities to learn about other areas of the reservoir. 7. Rescrvoir management and technical considerations provide justification for determining the number of pressure surveys to run in any given time period in a mature or developing oil or gas pool. 8. As a reservoir matures, the data requirements change and more or less data may be required to adequately monitor reservoir m¢:chanistns. Conservation Order 34 lB Page 2 (' ,4ovember 17, 1995 9. Consolidation of changes to Rule 6(a) and (b) into the previous version of Conservation Order 341A will keep all pertinent orders affecting management of the Prudhoe Oil Pool in one Conservation Order. 10. The operators periodically plan reservoir surveillance activity in order to budget time, manpower and resources. 11. The operators expect the number of surveys required to decrease with time in the mature areas of the pool. CONCLUSIONS 1. Conservation Order 341A Rule 6(e) allows the Commission to waive requirements of Rule 6 by administrative approval. In addition, Rule 6(e) allows the Commission to require more surveys by administrative order. 2. Prescribing a specific number of pressure surveys to run on an annual basis may cause waste of resources and provide redundant information in some areas of the reservoir. 3. Reservoir management and technical requirements should be prime considerations for design of a pressure surveillance program in a mature reservoir. 4. A pressure survey plan shall be submitted to the CoTnmission annually in conjunction with the Annual Prudhoe Oil Pool Surveillance Report required by Conservation Order 341A, Rule 11. 5. Consolidation of changes in Rule 6(a) and 6(b) with the Rules previously issued under Conservation Order 341A will not promote waste, harm ultimate recovery nor jeopardize correlative rights. 6. Consolidation will prevent proliferation of multiple Orders governing management of the same pool. NOW, THEREFORE, IT IS ORDERED THAT the changes to Rule 6(a) and 6(b) and the rules previously adopted under Conservation Order 341A hereinafter set forth apply to the following described area referred to in this order as the affected area: UMIAT MERIDIAN T. 10N., R. 12E., T. 10N., .R. 13E., T. 10N'., R. 14E., T. 10N., iR. 15E., T. 10N., R. 16E., Sections: 1,2,3,4, 10, 11, 12 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 24 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, '14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 36 all 5, 6, 7, 8, 17, 18, 19, 20, 29, 30, 31 Conservation Order 341B Page 3 ~qovember 17, 1995 T. liN., R. llE., T. liN., R. 12E., 1,2,3,4,9, 10, 11, 12, 13, 14, 15,24,25 all T. liN., R. 13E., all T. l lN., R. 14E., all T. l lN., R. 15E., all T. liN., R. 16E., 17,18,19,30,31,32 T. 12N., R. 10E., 13,24, T. 12N., R. liE., 15,16,17,18,19,20,21,22,25,26,27,28,29,30, 32,33,34,35,36 T. 12N., R. 12E., 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36 T. 12N., R. 13E., 19, 20, 21, 22, 23, 26, 27, 28, 29, 30, 3'!, 32, 33, 34, 35,36 T. 12N., R. 14E., 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36 T. 12N., R. 15E., 25, 26, 27, 28, 29, 30,31,32, 33, 34, 35, 36 (Source: C. O. 145, page 7, expansions/contractions of initial participating area based on November 20, 1987 letter, Wade and Nelson to Eason, Re: Prudhoe Bay Unit Exhibits, Exhibit C, Part I Oil Rim Participating Area and 'Part II Gas Cap Participating Area.) Rule 1 Pool Definition and Changing the Affected Area (ref. C.O. 145) (a) The Prudhoe Oil Pool is defined as the accumulations of oil that are common to and which correlate with the accumulations found in the Atlantic Richfield - Humble Prudhoe Bay State No. 1 well between the depths of8,110 feet and 8,680 feet. (Source: C.O. 145, Rule '1) (b) The Commission may adjust the description of the affected area to conform to future changes in the initial participating area by administrative approval. (Source: C. O. 145, Rule 12) Rule 2 Well Spacing (ref. C.O. 145, 174) There shall be no restrictions as to well spacing except that no pay shall be opened in a well closer than 500 feet to the boundary of the affected area. (Source: C.O. 174, Rule 2) Conservation Order 341B Page 4 ,~ovember 17,1995 Rule 3 Casing and Cementing Requirements (ref. C.O. 145, 238) (a) Conductor casing shall be set at least 75 feet below the surface and sufficient cement shall be used to fill the annulus behind the pipe to the surface. Rigid high density polyurethane foam may be used as an alternate to cement, upon approval by the Commission. The Commission may also administratively approve other sealing materials upon application and presentation of data which show the alternate is appropriate based on accepted engineering principles. (Source: C.O. 238, Rule 3a) (b) Surface casing to provide proper anchorage tbr equipment, to prevent uncontrolled flow, to withstand anticipated internal pressure, and to protect the well from the effects of permafrost thaw-subsidence or freeze-back loadings shall be set at least 500 feet, measured depth, below the base of the permafrost but not below 5000 feet true vertical depth. Sufficient cement shall be used to fill the annulus behind the casing to the surface. The surface casing shall have minimum axial strain properties of 0.5% in tension and 0.7% in compression. (Source: C.O. 238, Rule 3b) (c) Alternate casing programs may be administratively approved by the Commission upon application and presentation of data which show the alternatives are appropriate, based upon accepted engineering principles. (Source: C.O. 238, Rule 3c) Rule 4 Blowout Prevention Equipment and Practice (ref. C.O. 145) (a) The use of blowout prevention equipment shall be in accordance with good established practice and all equipment shall be in good operating condition at all times. All blowout prevention equipment shall be adequately protected to ensure reliable operation under the existing weather conditions. Ail blowout prevention equipment shall be checked for satisfactory operation during each trip. (Source: C.O. 145, Rule 4a) (b) Before drilling below the conductor string, each well shall, have installed at least one remotely controlled annular type blowout preventer and flow diverter system. The annular preventer installed on the conductor casing shall be utilized to permit the diversion of hydrocarbons and other fluids. This low pressure, high capacity diverter system shall be installed to provide at least the equivalent of a 6-inch line with at least two lines venting in different directions to insure downwind diversion and shall be designed to avoid freeze-up. These lines shall be equipped with full-opening butterfly type valves or other valves approved by the Commission. A schematic diagram, list of equipment, and operational procedure for the diverter system shall be submitted with the application Permit to Drill or Deepen (Form 10-40 l) for approval. The above requirements may be waived for subsequent wells drilled from a multiple drill site. (Source: C.O. 145, Rule 4b) Conservation Order 341B ' Page 5 .qovember 17,1995 (c) Before drilling below the surface casing all wells shall have three remotely controlled blowout preventers, including one equipped with pipe rams, one with blind rams and one annular type. The blowout preventers and associated equipment shall have 3000 psi working pressure and 6000 psi test pressure. (Source: C.O. 145, Rule 4c) (d) Before drilling into the Prudhoe Oil Pool, the blowout preventers and associated equipment required in (c) above shall have 5000 psi working pressure rating and 10,000 psi test pressure rating. (Source: C.O. 145, Rule 4d) (e) The associated equipment shall include a drilling spool with minimum three-inch side outlets (if not on the blowout preventer body), a minimum three-inch choke manifold, or equivalent, and a fill-up line. The drilling string will contain full-opening valves above and immediately below the kelly during all circulating operations with the kelly. Two emergency valves with rotary subs for all connections in use will be conveniently located on the drilling floor. One valve will be an inside blowout preventer of the spring-loaded type. The second valve will be of the manually-operated ball type, or any other type which will perform the same function. (Source: C.O. 145, Rule 4e) (f) All ram-type blowout preventers, kelly valves, emergency valves and choke manifolds shall be tested to required working pressure when installed or changed and at least once each week. thereafter. Annular preventers shall be tested to 50% recommended working pressure when installed and once each week thereafter. Test results shall be recorded on written daily records kept at the well. (Source: C.O. 145, Rule 4f) Rule 5 Automatic Shut-in Equipm_ent (ref. C.O. 145, 333,363) (a) Each well shall be equipped with a Commission approved fail-safe automatic surface safety valve system (SVS) capable of preventing uncontrolled flow by shutting off flow at the wellhead and shutting down any artificial lift system where an over pressure of equipment may oCcur. (b) The safety valve system (SVS) shall not be deactivated except during repairs, while engaged in active well work, or if the pad is manned. If the SVS cannot be returned to service within 24 hours, the well must be shut in at the well head and at the manifold building. 1. Wells with a deactivated SVS shall be identified by a sign on the wellhead stating that the SVS has been deactivated and the date it was deactivated. . A list of wells with the SVS deactivated, the dates and reasons for deactivating, and the estimated re-activation dates must be maintained current and available for Commission inspection on request. Conservation Order 341 ~ Page 6 November 17, 1995 (c) A representative of the Commission will witness operation and performance tests at intervals and times as prescribed by the Commission to confirm that the SVS is in proper working condition. (d) The SVS must be maintained in working condition at all times unless the well is shut in and secured, or the well is being operated in conformance with other sections of this rule. (e) Upon proper application or its own motion, the Commission may administratively waive or amend the requirements of this rule as long as the change does not promote waste, jeopardize correlative rights or compromise ultimate recovery, and is based on sound engineering principles. (f) Nothing in this rule precludes the installation of a SSSV in wells designated by the operator. If a SSSV is installed, it must be maintained in working order and is subject to performance testing as part of the SVS. Rule 6 Pressure Surveys (ref'. C.O. 145, 165, 192, 208, 213,220, AA 220.1,341B) (a) Prior to regular production, a static bottom hole or transient pressure survey shall be taken on at least one in three wells drilled from a common drilling site. (Source: C.O. 220, Rule 1, C.O. 341B) (b) An annual pressure surveillance plan shall be submitted to the Commission in conjunction with the Annual Prudhoe Pool Reservoir Surveillance Report by April 1, each year. The plan will contain the number of pressure surveys anticipated for the next calendar year and be subject to approval by the Commission by Mayl. These surveys are needed to effectively monitor reservoir pressure in the Prudhoe Oil Pool. The surveys required in (a) of this rule may be used to fulfill the minimum requirements. (Source: C.O. 220, Rule 6, C.O. 341B) (c) Data from the surveys required in (a) and (b) of this rule shall be filed with the Commission by the last day of the month following the month in which each survey is taken. Form 10-412, Reservoir Pressure Report, shall be used to report the data from these surveys. Data submitted shall include rate, pressure, time, depths, temperature and any well condition, necessary for the complete analysis of each survey. The datum for the pressure surveys is 8800 feet subsea. Transient pressure surveys obtained by a shut in buildup test, an injection well pressure fall-off test, a multi-rate test or an interference test are acceptable. Other quantitative methods may be ad~ninistratively approved by the Commission. (Source: C.O. 220, Rule 7) (d) Results and data from any special reservoir pressure monitoring techniques, tests, or surveys shall also be submitted as prescribed in (c) of this rule. (Source: C.O. 220, Rule 8) Conservation Order 34 lB ~ Page 7 November17,1995 (e) By administrative approval the Commission may grant time extensions and waive requirements of this rule, and by administrative order the Commission may require additional pressure surveys in (b) of this rule. (Source: C.O. 220, Rule 5) Rule 7 Gas-Oil Contact Monitoring (ref. C.O. 145, 165, 192, 208, 213, AA 213.39) (a) Prior to initial sustained production, a cased or open hole neutron log shall be run in each well. (Source: C.O. 165, Rule 9a) This requirement is waived for waterflood/EOR areas encompassed by the expanded Prudhoe Bay Miscible Gas Project outlined in C.O. 290, and for those areas not expected to have significant GOC movement or gas encroachment from the gravity drainage area defined by the Commission through Administrative Approval. (Source: AA 213.39, excerpts from paragraph 1) (b) A minimum of 40 repeat cased hole neutron log surveys shall be run annually. (Source: C.O. 208, Rule 4) (c) The neutron logs run on any well and those required in (a) and (b) of this rule shall be filed with the Commission by the last day of the month tbllowing the month in which the logs were run. (Source: C.O. 165, Rule 9d) (d) By administrative approval, the Commission may delay, modify or waive the logging requirements of this rule or may require additional wells to be logged. (Source: C.O. 213, Rule 3) Rule 8 Productivity Profiles (ref. C.O. 145, 165, 192, 208, 213, AA 213.40) (a) A spinner flow meter or tracer survey shall be run in each well during the first six months the well is on production. (Source: C.O. 165, Rule 1 la) This requirement is waived for wells completed with a single perforated interval, or with perforations in a single reservoir zone including highly deviated (greater than 65 degrees) and horizontal wells. (Source: AA 213.40 paragraph 3) (b) Follow-up surveys shall be performed on a rotating basis so that a new production profile is obtained on each well periodically. Nonscheduled surveys shall be run in wells which experience an abrupt change in water cut, gas-oil ratio, or productivity. (Source: C.O. 1.65, Rule 1 lb) (c) The complete spinner flow meter or tracer data and results shall be recorded and filed with the Commission by the last day of the month following the month in which each survey is taken. (Source: C.O. 165, Rule I lc) (d) The Commission may administratively approve alternate methods and time periods in the enforcement of this rule provided that the data obtained is appropriate for monitoring the Prudhoe Oil Pool or may waive the requirements of (a), (b) and (c). By administrative order the Commission may specify additional surveys other than the surveys submitted under (a), (b) and (c) ofthis.mle. (Sources: C.O. 208, Rule 8 and C.O. 213, Rule 2) Conservation Order 341B" Page 8 November 17, 1995 Rule 9 Pool Off-Take Rates (ref. C.O. 145, 214) The maximum annual average oil offiake rate is l. 5 million barrels per day plus condensate production. The maximum annual average gas offiake rate is 2.7 billion standard cubic feet per day, which contemplates an annual average gas pipeline delivery sales rate of 2.0 billion standard cubic feet per day of pipeline quality gas when treating and transportation facilities are available. Daily offiake rates in excess of these amounts are permitted only as required to sustain these annual average rates. The annual average offiake rates as specified shall not be exceeded without the prior written approval of the Commission. Annual average offiake rates mean the daily average rate calculated by dividing the total volume produced in a calendar year by the number of days in the year. However, in the first calendar year that large gas offiake rates are initiated, following the completion of a large gas sales pipeline, the annual average offiake rate for gas shall be determined by dividing the total volume of gas produced in the calendar year by the number of days remaining in the year following initial delivery to the large gas sales pipeline. Rule 10 Facility Gas Flaring (ref. C. O. 145, 145A, 197, 219) (a) The venting or flaring of gas is prohibited except as may be authorized by the Commission in cases of emergency or operational necessity. However, upon application by the operators, the venting or flaring of gas may be authorized 'by the Commission to permit testing of wells in areas of the pool where access to pool gas gathering facilities is not prudent. (Source: C.O. 197) (b) The flaring of gas is approved to maintain safety flares and to permit purging of the gas handling equipment at the rates specified for the following facilities. The daily average rate shall be calculated on a monthly basis. Facility Approved .Rate Gathering Center No. ! Gathering Center No. 2 Gathering Center 'No. 3 Flow Station No. 1 Flow Station No. 2 Flow Station No. 3 Field Fuel Gas 'Unit & Central Compressor Plant Central Gas Facility (Source: C.O. 219, Rule 1) I, 100 MCF/D 1,100 MCF/D 1,100 MCF/D 1,000 MCF/D 1,000 MCF/D 1,000 MCF/D 1,000 :MCF/D 3,000 ~MCF/D (c) After the commencement of any flaring incident at any facility arising from an emergency or operational necessity, the Operator shall take the following action: Conservation Order 34'1Jr (' Page 9 November '17, 1995 1. Initiate appropriate action and procedures so that flaring can be terminated as soon as reasonably possible and the flaring can be minimized during the flaring period. 2. Production shall be curtailed to minimize flaring as soon as reasonably possible. (Source: C.O. i 45 A, Rule 2) (d) Flaring as a result of an emergency or operational necessity shall not be permitted longer than a total of twelve (12) hours after the commencement of each such incident without approval of the Commission or its designated representative. (Source: C.O. 145 A, Rule 3) (e) Upon the request of the Operator to flare for more than a total of twelve (12) hours, a member of the Commission or its designated representative may verbally approve the request for a period not to exceed five (5) days beyond the twelve (12) hour period provided for in (d) above. The following information shall be given to the Commission or its designated representative upon request for such approval: (Source: C.O. 145A, Rule 4) 1. The facility at which the flaring is occurring. 2. Description of the flaring incident and cause. 3. Time of commencement. 4. Estimated time of termination. 5.. Volume of gas flared. 6. Estimate of gas volume to be flared. 7. Action being taken to minimize and eliminate flaring. (f) A request in writing must be submitted by the Operator in order to obtain written administrative approval to flare beyond the period provided in (e) above. (Source: C.O. 145A, Rule 5) (g) On a monthly basis the Operator shall submit a written report to the Commission on all flaring incidents that result from an emergency or operational necessity. The report shall be due by the 20th day of the month following the reporting month. The report shall contain the following information tbr each flaring incident: 1. The facility at which the flaring occurred. 2. Time of commencement and termination of flaring. 3. Description of the flaring incident and cause. Conservation Order 341B Page 10 November 17, 1995 4. Volume of gas flared. 5. Action taken to eliminate the cause for the flaring incident. (Source: C.O. 145A, Rule 6) (h) Following a ten (10) day notice to the operator of any production facility the Commission may change the volumes of gas allowed to be flared for safety. (Source: C.O. 145A, Rule 7) Rule 11 Annual Surveillance Reporting (ref. C.O. 165, 186, 195, 208, 223,224, 279, AA 279.1) (a) An annual Prudhoe Oil Pool surveillance report will be required by April 1 of each year. The report shall include but is not limited to the following: 1. 'Progress of enhanced recovery project(s) implementation and reservoir management summary including engineering and geotechnical parameters. , Voidage balance by month of produced fluids, oil, water and gas, and injected fluids, gas, water, low molecular weight hydrocarbons, and any other injected substances (which can be filed in lieu of monthly Forms 10-413 for each EOR project). (Source C.O. 279, Rule 7 and AA 279.1 excerpt from paragraph 3) 3. Analysis of reservoir pressure surveys within the field. 4. Results and where appropriate, analysis of production logging surveys, tracer surveys and observation well surveys. . Results of gas movement and gas-oil contact surveillance efforts including a summary of wells surveyed and analysis of gas movement within the reservoir. The analysis shall include map(s) and/or tables showing the locations of various documented gas movement mechanisms as appropriate. (Source: C.O. 279, Rule 7) (b) Upon its own motion or upon written request, the Commission may administratively amend this rule so long as the change does not promote waste nor jeopardize correlative rights and is based on sound engineering principles. (Source: C.O. 279, Rule 8) Rule 12 prudhoe Bay' Miscible Gas Project (PBMGP) (ref. C.O. 195, 290) (a) Expansion of the PBMGP and infill expansion o17 miscible gas injection in the NWFB is approved for the 59,740 acre portion of the Prudhoe Oil Pool defined in the record. (Source: C.O. 290, Rule 1, AA 290.1) Conservation Order 341B Page 11 November 17, 1995 (b) An annual report must be submitted to the Commission detailing performance of the PBMGP and outlining compositional information for the current miscible injectant (MI) necessary to maintain miscibility under anticipated reservoir conditions. (Source: C.O. 290, Rule 2) (c) The operator will maintain a pressure differential of at least 250 psi between the minimum miscibility pressure (MMP) of the MI and the prevailing reservoir pressure at the time of injection. This differential is based on a projected prevailing reservoir pressure decline of no more than 30 psi/year over the life of the project. (Source: C.O. 290, Rule 4) (d) The operators are directed to continue investigating options to mitigate pressure decline and to provide an annual progress report to the Commission. (Source: C.O. 290, Rule 5) (e) Upon its own motion or upon written request, the Commission may amend this rule by administrative action if the change does not promote waste, violate correlative rights, nor jeopardize ultimate recovery, and is based on sound engineering principles. (Source: C.O. 290, .Rule 6) Rule 13 W'aiver of GOR Limitation (ref. 8/22/86 letter) The Commission waives the requirements of 20 AAC 25.240(b) for all oil wells in the Prudhoe Oil Pool of the Prudhoe Bay Field so long as the gas from the wells is being returned to the pool, or so long as the additional recovery project is in operation. (Source: Letter 8/22/86, L. Smith to Heinze/Nelson, paragraph 3) Rule 14 Waiver of "Application fbr Sundry Approval" Requirement for Workover Operations (ref. C.O. 258) The requirements of 20 AAC 25.280(a) are waived for development wells in the Prudhoe Oil Pool of the Prudhoe Bay Field. (Source: C.O. 258) Rule 15 Waterflooding (ref. 3/20/81 letter Hamilton to'Nelson/Norgaard) The commission approves the December, 1980 additional recovery application for water- flooding in the Prudhoe Oil Pool subject to the requirements listed in Rule 11 above. Any proposed changes must be submitted to the Commission for approval. (Source: iLetter 3/20/81, Hamilton to Nelson/Norgaard) Rule 16 Orders Revoked The following Conservation Orders and associated Administrative Approvals and letter approvals are hereby revoked. Conservation orders 78, 83B, 85, 87, 88, 96, 97, 98B, ( Conservation Order 341B' Page 12 .. (' November 17, 1995 117, l17A, 118, 130, 137, 138, 139, 140, 141,143, 145, 145A, 148, 155, 160, 164, 165, 166, 167, 169,'174, 178, 180, 181,183, 184, 185, 186, 188, 189, 192, 194, 195, 195.1, 195.2, 195.4, 197, 199, 200, 204, 208, 213,214, 219, 220, 223,224, 238, 258, 259, 279, 290 and 333, 341,341A and March 20, 1981 and August 22, 1986 letter approvals. The hearing records of these orders are made part of the record for this order. DONE at Anchorage, Alaska and dated November 17, 1995. Russell A. DoU-glas~~ AS 31.t)5.080 provides that within 20 days after receipt of written notice of Ibc cntD, of an order, a person ,affected by it may file with tile Commission an application for rehearing. A request for rehearing must be received by 4:30 PM on the 23 rd day l'oilo'wing the date of the order, or next working day if a holiday or weekend, to be timely filed. The Commission shall grant or refi~sc Ihe application ill whole or in pan: within 10 days. The Commission can refi~sc an application by not acting on it within the 10-day period. An affected person has 30 days from the date thc Commission refuses the application or mails (or othenvisc distributes) an order upon rehearing, both being the 'final order of the Commission. to appeal the decision to Superior Court. Where a request, for rehearing is denied by nonaction of thc Coxmnission, the 30 day period for appeal to Superior Court runs fi'om thc date on which tile request is deemed denied (i.e., 10th day after ti'lc application for rehearing was filed). ALASI~& OIL AND GAS CONSERVATION COMMISSION February 29, 1996 TONY KNOWLE$, GOVEFINOI~ 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 ADMINISTRATIVE APPROVAL NO. 341B.1 Re: Application for Extension of deadline for Conservation Order 34 lB Pmdhoe Bay Surveillance Report. Mr. C. J. Phillips Manager, PBU Resource Management, Waterflood BP Exploration (Alaska) Inc. P. O. Box 196612 Anchorage, AK 99519-6612 Dear Mr. Phillips; We received your correspondence dated February 23, 1996 requesting an extension of the deadline for submission of the 1995 Pmdhoe Bay Surveillance Report. You propose to submit this report on May 1,1996 instead of on April 1, 1996 as stipulated in Rule Il(a) of Conservation Order No. 341B. You requested this delay due to a temporary increase in your workload. The Commission has determined postponement of submission of the 1995 Pmdhoe Bay Surveillance Report until May 1, 1996 is consistent with prudent engineering principles and is approved pursuant to Rule 11 (b) of Conservation Order No. 341B. David V~. Jo~msto~ "~ J. David Norton, P.E. Commissioner BY ORDER OF'THE COMMISSION Tuckerman BabCock Commissioner Notice of Public Hearing STATE OF ALASKA Alaska Oil and Gas Conservation Commission Re: AOGCC motion to revoke Rule 10 of Conservation Order 341B. Conservation Order 341, which consolidated pool rules for Prudhoe Bay, was issued in November, 1994. New gas disposition regulations became effective on January 1, 1995 and functionally revoked all previously issued conservation orders relating to facility flaring. Subsequent revisions to Conservation Order 341 inadvertently retained an out-of-date rule describing approved flare volumes for Prudhoe Bay facilities. The Commission proposes to correct this error by amending Conservation Order 341B and revoking Rule 10, Facility Gas Flaring. A person who may be harmed if the requested order is issued may file a written protest prior to 4:00 PM April 16, 1997 with the Alaska Oil and Gas Conservation Commission, 3001 Porcupine Drive, Anchorage, Alaska 99501, and request a hearing on the matter. If the protest is timely filed and raises a substantial and material issue crucial to the Commission's determination, a hearing on the matter will be held at the above address at 9:00 am on May 6, 1997 in conformance with 20 AAC 25.540. If a hearing is to be held, interested parties may confirm this by calling the Commission's office, (907) 279-1433 after April 16, 1997. If no protest is filed, the Commission will consider the issuance of the order without a hearing. If you are a person with a disability who may need a special modification in order to comment to or to attend the public hearing, please contact Diana Fleck at 279-1433 no later than April 26, 1997. Published March 29, 1997 AO02147029 STOF0330 '~ A0-02147029 AFFID~'~VIT $75.48 STATE OF ALASKA, ) THIRD JUDICIAL DISTRICT. ) Eva H. Kaufmann ........................ . .......................... being first duly sworn on oath deposes and says that he/she is an advertising representative of the Anchorage Daily News, a daily newspaper. That said newspaper has been approved by the Third Judicial Court, Anchorage, Alaska, and it now and has been published in the English language continually as a daily newspaper in Anchorage, Alaska, and it is now and during all said time was printed in an office maintained at the aforesaid place of publication of said newspaper. That the annexed is a copy of an advertisement as it was published in regular issues (and not in supplemental form) of said newspaper on March 29,1997 and that such newspaper was regularly distributed to its subscribers during ail of said period. That the full amount of the fee charged for the foregoing publication is not in excess of the rate charged private individuals. Subscribed and sworn me this / day of Notary P the Stmte of Alaska. Third D~vislon. Anchorage, Alaska MY CO/V~ISSION EXPIRES .......... M~, ¢onmamb'~'~".,;i~i'" 19 ...... February 8, 2000 OF PUBLICATION - 'iNotice of Public Hearing 'STATE OF ALASKA ,', "~.lask'o Off and' Gas Conservation Commission ,' Re¥ AOGCC motion to revoke/ Rui~:,10 of the, Conser.~tionl Orcler ,34] B. " 'Conservation Order 341, which cOnsolidated, pool rules for 'Prudhoe Bay,' Was issuec~ i,',',,NOvember, 1994. 'N~w gas dJSP°sJtJon regulations becarn~ eftecti~e on January 1', 199,~ and :~unCtionally revoked all Prevl0usly issued'cOnservat Jan orders, relating, to f'ocJlity flaring· · Subsequent revisions tO 'Conservation' Order 341, inadvertently ',:retained an out, of-elate rule describing. a,,pprbvedf flar~,,,,,,,Volumes tor~ ~ru~lhoe ,Bay i:fd~:illties. The Commis,~ion ~roposes to cor~ feet ithjs errOr :b~, amending conservation 'Order .,341 B .an~ revoking 'Rule' 10,' ,Facil'ity Gasl ., .P, lqrlng.,' ,~ , , ,~, ", ::,... ',,,, .... A Person who may be harm,t e¢~ 'lf~,the ~requesfed Order ir~ , issued,may file 'a w~ tten te~f 'pi~Jor~ to 4' 00, PM'Apr 16 ' 1'99~ ' "-:'~'~' ' ~'~ -~ ";"~ ~,O .... ,. , 3001 =;;re.:::.."..' ~.-.-..., ...... age, -. ,'s~- ~.::' ,: .... , :,. o'.hearing on'rhe,~atter., If the~ , nrbtest 'or.,petiti~j~,,,:is timely1 fii&d:'ancl, raiSes,',,:a, Substentioll and "--.~'..-'~"_' ',..4.. -, ..',, the ~::.',':, .% :- .~ ' ,.,~:-.'-,.~' , ,,~ ' tlon: :: -..-, :.-., ~: :, ....~ .... ,,'.. wi'Ii, De held,,at',,the,,above. d~e$:s,, ati: 9'!,00'ib'r~, 'on ',May 6,1 1997., in, c~ri~or~an~:e ~ w ,th 2q ..: ARC ~ 25 '540,. ifa hearing' s tc~ · '.-;j,,, ..-,Cp4';.,~ -~.;% .-., ',:~ · 279-'-'.TM :'1'.,- -'--,- '"'='~.."'"-: "" .",', ~r,"~s' S : .:~ -.-..' ? ,,, · -.~.~ ~.. ... %~,-~..,_.,.,.., , · i · .'-.'."::=-.: ".~:::..~'k"' '" '" :~!, .~..-:..: .:.:.:, :...: :. . · ,.::.'i~.'.i "-:::.:.~""': :':::: ' ... ;.~ ~.':~':.' : -.- .. .... .:... .,~. ~ :~:~.. '.: .'. ..,.,....~ .... I.C:hairrnan'., ' ,", '. :Alci~'ka 'Oil: and.G~s '. ~ Conservation'COmmission '"PUb':' ~arch"'291'~'1997--:- -- : :'1- BP EXPLORATION FEB 2 7 1996 Alaska Oil & Gas Cons. Commission Anchorage 23 February 1996 900 East Benson Boulevard f'.~-~,,~.:'i ........ BP Exploration (Alaska)inc. ~:~ ' RO. BOX 196612 ~"~... Anchorage, Alaska 99519-66{,~:~~ ~r~, (907) 561-5111 ~ ;~2~ David W. Johnston, Chairman Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, AK 99501-3192 RE: Application for Extension of deadline for Conservation Order 279, Pru¢ Bay Surveillance Report. si'El TECH Dear Mr. Johnston: As Operator of the Western Operating Area we are requesting an extension of the deadline for the 1995 Prudhoe Bay Surveillance Report. Meeting the current deadline of April 1, 1996 for the 1995 Prudhoe Bay Surveillance Report (Conservation Order 279) would mean the delay of several other projects with tight targets that are expected to deliver high oil rates. We therefore request a delay of one month in delivery of the 1995 Prudhoe Bay Surveillance Report. The new deadline for the report would be May 1, 1996. This delay would cover both BP and Arco's portions of the consolidated report. Thank you for taking the time to consider this request for an extension. If you need further information please contact Len Seymour at 564-4580. Sincerely, C. J. Phillips, Manager PBU Resource Management, Waterflood cjp/blc CC; Darrel Bose (ARCO) Allan Berger (Exxon) BP EXPLORATION ARCO Alaska, Inc. October 26, 1995 Mr. J. Hartz Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Re: Tabulation of 1994-95 Pressure Surveys Dear Mr. Hartz, Enclosed are tabulations of Prudhoe pressure surveys for years 1994 and 1995. Surveys are separated by operating area and by year. The listing for 1994 is complete except for flawed measurements which were discarded. The listing for 1995 is 'evergreen'. Databases lag behind field collection of data, and new surveys are coming in each day. For your convenience, both an electronic copy and a written copy are enclosed. We hope these data assist you. For further requests or questions, please call Matt Maguire at 263-4670 or myself at 564-4235. Sincerely, K. L. Farnstrom PBU Resource Management, BPX Attachment CC: D. P. Kruse, ARCO Alaska, Inc. M. M. Maguire, ARCO Alaska, Inc. M. T. Richards, BP Exploration (Alaska) Inc. OCT 2 ~ i995 Alaska Oil & Gas Cons. Commission Anchorage BP Exploration (Alaska) Inc. Post Office Box 196612 Anchorage, Alaska 99519-6612 Telephone (907) 561-5111 Co-Operators, Prudhoe Bay Unit ARCO Alaska, Inc. Post Office Box 100360 Anchorage, Alaska 99510-0360 Telephone (907) 276-1215 PBU PRESSURE SURVEYS, 1994 - 95 EOA 1994 Surveys Well Name Date Surv Pres Datum New Well ? 02-01A 09/19/94 3500 02-02 08/05/94 3521 02-06 03/03/94 3530 03-07 .12/11/94 4158 03-13 12/19/94 3655 03-14 12/11/94 3339 03-19 01/03/94 3422 03-32A 05/13/94 3465 New 04-02A 11/01/94 3669 New 04-05A 05/18/94 3749 ,' New 04-20 12/15/94 3644 04-25 12/14/94 3638 04-27 12/14/94 3524 04-28 12/14/94 3315 04-31 01/03/94 3251 04-43 06/27/94 3694 ,r' New 04-44 06/21/94 3464 New ;04-45 07/05/94 3758 ,.-' New 04-46 02/19/94 3523 New 05-04 09/19/94 3471 05-19 09/20/94 3508 .,'~ 06-06 05/28/94 3586 06-07 05/28/94 ~3490 06-09 05/28/94 3548 06'13 11/14/94 3519 ,, .... 06-16 05/13/94 3528 07-04A 02/22/94 3394 07-06 02/18/94 3515 07-16 11/02/94 3495 07-24 09/19/94 3526 09-01 02/18/94 3489 09-05A 12/09/94 3578 09-21 09/23/94 2963 09-22 09/07/94 3527 09-34A 04/09/94 3231 /~ New 09- 37 :09/04/94 3770 New 09-40 108/02/94 '3884 11-24A 03/06/94 3553 New 11-29 07/08/94 3571 ,/' New 11-30 12/16/94 3554 New 11-32 12/12/94 3619 /'~ New 11-34 12/06/94 3567 New 11-35 06/12/94 3792 ,~' New 11-36 06/09/94 3633 New 12-02 12/15/94 3500 12-07A 06/06/94 3353 12-10A 06/07/94 3397 12-12 06/08/94 3219 Page 1 OCT 2'! 1995 0it & Gas Cons. Commis= Anchorage 12-16A 06/07/94 3362 12-26 06/08/94 3430 12-27 12/16/94 3726 13-03 12/16/94 3549 . 13-07 06/24/94 3474 13-15 12/22/94 3895 -- 113-28 06/28/94 4153 14-04 12/03/94 3505 ,14-06 11/14/94 3603 -- 14-11 I 1/25/94 3565 14-12 I 1/25/94 3475 -- 14-20 12/11/94 3476 -- 14-21 12/23/94 3634 15-32 05/01/94 3498 New 15-33 04/05/94 3560 New 15-34 08/01/94 3579 ,,. New 15-36 09/14/94 3612 New 15-37 11/22/94 3571 ,,' New 15-38 10/15/94 3531 New 15-39 11/09/94 3594 New 15-40 12/11/94 3487 New 15-41 11/1 3/94 3785 ~ New 16-02 07/05/94 '3578 16-05 09/16/94 4338 16-15 04/01/94 3331 16-20 03/23/94 3328 16-24 03/24/94 3491 16-25 03/24/94 3488 17-02 12/10/94 3357 17-05 03/23/94 3395 ,~' 17-06 07/19/94 3725 17-08 07/19/94 3860 17-09 03/24/94 2887 17-13 10/10/94 3386 ,.. 17-15 09/23/94 3757 17-19 12/10/94 3343 ,~. 18-01 06/04/94 3580 18-08 06/10/94 3594 1995 Surveys Well Name Date Surv Pres Datum New Well ? 02-02 05/08/95 3515 02-04 05/05/95 3489 02-05 04/01/95 3525 -- 04-10 07/21/95 3757 -- 04-11A 07/16/95 3822 04-14A 07/22/95 3625 04-15 07/27/95 3556 04-43 08/05/95 3293 04-44 07/27/95 3495 05-12 03/28/95 3498 '" 06-08 08/09/95 3482 07-12 03/27/95 3475 07-18 01/23/95 3454 07-19 08/20/95 3466 07-32 01/22/95 3329 New Page 2 12-16A 06/07/94 3362 12-26 06/08/94 3430 12-27 12/16/94 3726 13-03 12/16/94 3549 - 13-07 06/24/94 3474 13-15 12/22/94 3895 13-28 06/28/94 4153 14-04 12/03/94 3505 14-06 11/14/94 3603 14-11 11/25/94 3565 14-12 11/25/94 3475 14-20 12/11/94 3476 14-21 12/23/94 3634 15-32 05/01/94 3498 New 15-33 104/05/94 3560 New 15-34 i08/01/94 3579 ., New 15-36 09/14/94 3612 New 15-37 11/22/94 3571 /~ New ~15-38 10/15/94 3531 New 15-39 11/09/94 3594 ~" New 15-40 12/11/94 3487 New 15-41 11/13/94 3785 ~ New 16-02 07/05/94 3578 16-05 09/16/94 4338 16-15 04/01/94 3331 16-20 03/23/94 3328 16-24 03/24/9 4 3491 17-02 12/10/94 3357 17-05 03/23/94 3395 17,06 07/19/94 3725 17-08 07/19/94 3860 17-09 03/24/94 2887 17-13 10/10/94 3386 17-15 09/23/94 3757 17-19 12/10/94 3343 18-01 06/04/94 3580 18-08 06/10/94 3594 1995 Surveys Well Name Date Surv Pres Datum New Well ? 02-02 05/08/95 3515 02-04 05/05/95 ;3489 02-05 04/01/95 !3525 04-10 07/21/95 !3757 04-1 lA 07/16/95 :3822 04-14A 07/22/95 3625 04-15 07/27/95 3556 04-43 08/05/95 '3293 04-44 07/27/95 3495 05-12 03/28/95 3498 06-08 08/09/95 3482 07-12 03/27/95 3475 07-18 01/23/95 3454 07-19 08/20/95 3466 07-32 01/22/95 3329 New Page 2 07-33 07/02/95 3698 07-34 07/02/95 3504 ~ 11-07 ST1 07/29/95 3537 11-08 07/26/95 3546 / 11-10 08/07/95 3598 11-26 07/26/95 3428 11-29 08/05/95 3606 12-01 03/28/95 3467 12-11 07/17/95 3486 12-17 03/29/95 3399 12-30 07/21/95 3224 14-18 08/12/95 :3483 15-35 01/14/95 i3543 New 15-41 01/13/95 3526 ~ New 16-31 08/27/95 3644 WO~ 1994 Surveys Well Name Date Surv Pres Datum New Well ? A-01 10/29/94 3382 A-06 10/27/94 3461 A-14 1/13/94 3571 A-18A 7/19/94 3561 A-19 7/20/94 3468 A-26 10/27/94 3395 A-28 10/2g/94 3456 A'30 10/29/94 3516 A-38 7/20/94 3486 A-40 7/1 9/94 3553 B-02 1/15/94 3512 B-06 10/19/94 3462 B-08 1/15/94 3501 B-14 2/15/94 3461 B-17 1/13/94 3488 B-27 1/15/94 3490 B-30 1/1 4/94 3532 B-33A 1/1 4/94 3639 New B-34 1/10/94 3517 ~' New C-38 3/12/94 3104 D-04A 12/17/94 3459 D-09 12/17/94 3433 D-18 12/17/94 3429 / D-23 12/17/94 3468 E-15A 12/25/94 3430 .~ New E-23AST 1/19/94 3516 New E-24A 11/24/94 3395 ~' New E-33 1/11/94 3436 New F-14 5/28/94 3445 F-38 7/8/94 3535 G-02 3/22/94 3491 G-06 9/8/94 3189 G-07 10/19/94 2964 G-11 1/17/94 3403 - ' D OCT 2/' 1995 ~iaska Oil & Gas Cons. Commissim Page 3 G-17 3/12/94 3454 ~G-23 7/29/94 2850 G-24 12/20/94 3272 G-26 9/8/94 2880 G-30 2/20/94 3444 H-05 10/19/94 3402 H-06 7/6/94 3386 H-08 11/27/94 3428 H-11 7/6/94 3377 H-11 11/15/94 3399 H-14 10/19/94 3409 H-24 2~23/94 3522 H-27 10/19/94 3386 H-29 9/8/94 3431 H-31 3/7/94 3622 New H-31 11/15/94 3365 H-32 3/14/94 3583 New H-33 4/12/94 3470 ., New J-01A 10/9/94 3460 New ,J-03 9/9/94 3420 ~J-06 9/9/94 3454 J-08 9/10/94 3441 J-09A 9/14/94 3402 New J-26 9/9/94 3400 K-02B 12/1/94 3546 New K-16 2/22/94 3612 ,- New M-08 2/17/94 3534 "M'-'~10':'' : ' 1:1/:2'6/9'4.~ ' 3266~':: : '~' M-18B 12/2/94 3355 M' i'9A 11/16/94 3383 ,,'" M:22 2/17/94 3471 M-23 11/26/94 3101 M-24 2/17/94 3421 M-30 11/16/94 3500 M-33 10/13/94 3423 New M-34 1/11/94 3586 ,,.,, New M-38 11/14/94 3540 New N-06 7/28/94 3419 N-09 11/17/94 3491 N-11A 7/28/94 3450 ,,- N-14 8/30/94 3435 N,15 11/17/94 3504 N-17 2/18/94 3465 N-20 8/30/94 3439 N-25 7/30/94 3439 New N-26 7/23/94 3546 ,,,, New P-02 3/30/94 3731 P-08 2/13/94 3742 ,,,~ New P-10 3/29/94 3587 P-12 3/30/94 3745 P-13 3/29/94 3604 P-23 2/23/94 3501 ,~ New R-01 9/1/94 ~3547 R-04 11/16/94 3477 R-14 11/16/94 3367 R-18 9/1/94 3544 R-19 10/4/94 3604 R-21 11/27/94 3341 Page 4 R-22 9/8/94 3571 R-24 11/27/94 3438 R-27 2/19/94 3425 R-34 3/26/94 3375 New R-35 2/4/94 3486 New S-02 1/12/94 3768 S-02A 10/6/94 3717 New S-03 7/2/94 2918 S-05 11/30/94 3654 S-07A 2/21/94 3570 S-08 7/2/94 2426 S-ll 7/31/94 3634 S-12A 2/21/94 3591 S-13 1/12/94 3594 S-15 2/22/94 3322 S-16 11/17/94 3652 S-20 7/2/94 3448 S-23 7/2/94 3480 $-24 7/3/94 3323 S-25 7/3/94 3505 S-26 11/18/94 3620 S-30 7/2/94 3433 S-32 11/17/94 3540 S-34 7/2/94 3700 S-40 9/7/94 3526 New U-13 2/19/94 3629 W-10 6/25/94 3544 W'~i~I'' ' 2~2'~',/9:~4 $055 W-17 6/25/94 3396 W'20 6/25/94 3612 W-29 11/18/94 3764 W-37 2/25/94 3852 X-02 1/1 5/94 3550 X-02 7/20/94 3526 X-03 9/21/94 3504 X-10 7/20/94 3629 X-13A 7/20/94 3550 X-16 1/15/94 3529 X-18 7/19/94 3494 X-27 1/1 5/94 3542 X-28 4/12/94 3613 New X-29 5/1/94 3613 New X-31 5/1 7/94 3629 New X-35 3/2 8/94 3676 New Y-15 1/5/94 3663 Y-19 1/4/94 3661 Y-23 1/4/94 3650 Y-25 1/4/94 3703 Y-31 1/27/94 3723 Z-01 6/2 4/94 3914 Z-04 2/24/94 3868 Z-07A 6/2 4/94 3820 Z-20 6/23/94 3807 Z-25 6/23/94 3852 Z-28 2/24/94 3862 Page 5 1995 Surveys Well Name Date Surv Pres Datum New Well A-41 01/05/95 3744 New A-42 04/25/95 3398 ,'~ New B-29 08/17/95 3450 C-08A pending entry into database f New C-25A pending entry into database ,4 New C-31A 03/23/95 3648 / New C-41 04/17/95 3432 E-19A 02/10/95 3418 / ~New E-35 06/17/95 3415 New E-36 07/13/95 3408 .-' New E-37 08/21/95 3336 New E-38 09/23/95 3305 ,-- New E-39 10/13/95 3474 New F-02 01/22/95 3426 F-05 01/21/95 3427 F-14 01/21/95 2107 F-17A 02/02/95 3408 New F-19 02/22/95 3414 F-19 04/02/95 3073 F-31 03/03/95 3396 F-38 04/02/95 12563 F-39 01/21/95 3168 F,42 03/03/95 3410 F-48 04/02/95 2844 ",~0t'.A:?: 0:'7/0~4t95~ ',:' 3'~61: : G-02A 06~05~95 3420 ¢" New 'G~05 0:1/21/95 2134 G,05 03/26/95 2364 G-05 07/09/95 2235 G-05 07/30/95 2280 G-05 08/22/95 2276 G-10A 07/04/95 3461 / New G,10A 07/11/95 3364 . G-10A 07/16/95 3358 / . G,10A 08/27/95 3297 . G-13 01/23/95 2248 G-13 03/26/95 2280 G-25 07/16/95 3384 G-30 08/04/95 3619 H-23A 10/16/95 3371 H-33 05/20/95 3400 JX-02A 01/21/95 3280 / New K-19 31/22/95 3507 New M-07 02/21/95 3450 M-09 09/14/95 3557 M-26A 02/21/95 3619 M-32 02/24/95 3530 N-25 05/26/95 3697 N-25 06/24/95 3384 P-07 03/30/95 3711 / New P-12A 04/15/95 3733 New R-09 04/23/95 3309 :R-10 04/23/95 2345 R-13 04/24/95 3425 R-16 04/23/95 3363 Page 6 R-22 08/12/95 3461 R-26A 04/25/95 3423 R-29 ~04/23/95 3549 R-39 06/15/95 3473 ,~ New S-01R ,03/29/95 3767 S-08 102/16/95 2792 S-19 02/15/95 3093 S-21 102/15/95 3712 S-27 03/01/95 3661 S-28 08112/95 3713 S-33 !04/21/95 3418 $-35 02/15/95 3544 S-36 102/15/95 3520 T-01 04/13/95 3709 W-03 07/01/95 3810 W-04 07108/95 3598 W-06 07/01/95 3815 W-22 07/07/95 3663 W-30 07/02/95 3783 W-32 07/02/95 3745 X-01 01/21/95 ' 3513 X-04 04/17/95 3511 X-07 04/19/95 3477 X-08 01/20/95 3110 X-08 01/22/95 3262 X-08 04/21/95 3479 X-09A 03/27/95 3814 New 'X~21~'~ ~ ' '0~9~t~:5' 3'5 X-30 05/22/95 13610 New Y,0SA 09/30/95 !3742 / New Y-1 lA 10/20/95 3624 New Y-38 05/30/95 3617 f' New Z-12 01/27/95 3843 Z-13 01/27/95 3678 / ' Z-18 07/11/95 3131 Z-19 07/06/95 3566 Z-22 07/08/95 3343 Z-23A 05/09/95 3803 ~- New Z-26 01/27/95 3802 Z-30 08/28/95 3014 Z-31 04/01/95 3841 Page 7 BP EXPLORATION OCT 0 6 1995 October 3, 1995 ~ u~ & Gas Cons. Commissi~t Anchorage Mr. D. W. Johnston Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Re: Request for Administrative changes to: ARCO Alaska, Inc. Rules 6(a) & (b) of Conservation Order 341 Dear Mr. Johnston, The operators of the Prudhoe Bay Unit, BP Exploration, Inc. and ARCO Alaska, Inc., request administrative changes to Conservation Order 341, Rules 6(a) and (b) relating to the number of annual pressure surveys required in the Prudhoe Oil Pool. Conservation Order 341, Rule 6(a) states: "Prior to regular production, a static bottom hole or transient pressure survey shall be taken on each well. (Source: C.O. 220, Rule 1)" A common occurrence of a development drilling program is for a number of new wells to be drilled consecutively at a single pad or drill site. This results in several pressure surveys clustered in a localized area and typically causes more surveys to be acquired than is necessary to efficiently monitor reservoir pressure. For example, nine new wells were drilled at drillsite 15 during 1994. All nine wells required pressure surveys. One survey proved to be flawed, but the rest were in close agreement. We believe that three surveys would have been sufficient to provide the same level of areal coverage. We request Rule 6(a) be changed administratively under the provisions of Rule 6(e) to require a minimum of 3 surveys in a single development drilling area. This change will make the field pressure surveillance program more efficient and prevent waste. With field maturation, the gravity drainage mechanism and associated gas cap expansion has progressed, and more of the reservoir has become directly influenced by the pressure in the expanded gas cap. This has resulted in less pressure variation across most of the gravity drainage area of the field. Additionally, as future production declines, the rate of field pressure decline will slow down. The operators believe that substantially fewer pressure surveys are necessary to effectively monitor present and future reservoir pressure than the current rule requires. BP Exploration (Alaska)Inc. Post Office Box 196612 Anchorage, Alaska 99519-6612 Telephone (907) 561-5111 Co-Operators, Prudhoe Bay Unit ARCO Alaska, Inc. Post Office Box 100360 Anchorage, Alaska 99510-0360 Telephone (907) 276-1215 Mr. D. W. Johnston -2- A review of current survey needs has been completed for both the Eastern and Western Operating Areas. Based on a higher density sampling in the waterflood areas and less dense sampling within the gravity drainage area, approximately 67 WOA and 63 EOA annual surveys would suffice to monitor the field. The number of surveys needed will continue to decrease out into the future as the production declines. Conservation Order 341, Rule 6(b) states: "A minimum of 95 and 87 static bottomhole or transient pressure surveys shall be run annually in the Western Operating Area and Eastern Operating Area, respectively. These surveys are needed to effectively monitor reservoir pressure in the Prudhoe Oil Pool. The surveys required in (a) of this rule may be used to fulfill the minimum requirements. (Source: C.O. 220 Rule 6)" We request Rule 6(b) be changed administratively to require an appropriate amount of static bottomhole or transient pressure surveys be collected for prudent operation and management in the Western and Eastern Operating Areas. With maturing reservoir life, as production declines, the number of needed pressure surveys is expected to gradually decrease. Specification of a minimum number of surveys is omitted in recognition of the gradual decrease. This change will improve the efficiency of the field surveillance program by eliminating unneeded surveys, preventing waste, and positioning us for the future. If at any time in the future the commission observes the need for more surveys, Rule 6(e) allows the commision to require additional surveys. For clarity, Attachment I shows the proposed verbiage to Conservation Order 341, Rules 6(a) and (b). If you require additional information, or would like a presentation on this, please call Matt Maguire at 263-4670 or Ken Farnstrom at 564-4235. Si n~,~r-e, ly, / ,//,.,,-, D. W. Bos(~ ' Manager PB Resource Development ARCO Alaska, Inc. C. J. Phillips Manager PBU Waterflood BP Exploration (Alaska)Inc. Attachment CC: J. Hartz, AOGCC M. L. Bill, ARCO Alaska, Inc. M. M. Maguire, ARCO Alaska, Inc. T. Lane, Exxon R. Dragnich, Exxon K. Farnstrom, BP Attachment I Proposed Verbiage Conservation Order 341 Rule Prior to regular production, a static bottom hole or transient pressure survey shall be taken on each well. For multi-well development drilling areas, and prior to regular production, a static bottom hole or transient pressure survey shall be taken on a minimum of three of the total new wells. Rule In the Western and Eastern Operating Areas, an appropriate amount of static bottom hole or transient pressure surveys will be collected for prudent operation and management of the field. With maturing reservoir life, as production declines, the number of needed pressure surveys is expected to gradually decrease. Specification of a minimum number of surveys is omitted in recognition of the gradual decrease.