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Home My WebLink AboutCO 080 AConservation 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: ROBIN Scanning Preparation TOTAL PAGES BY: ROBIN (~ Production Scanning Stage 1 PAGE COUNT FROM SCANNED DOCUMENT: v PAGE COUNT MATCHES NUMBER IN SCANNING PREPARATION: /~ YES // - NO BY: Stage 2 IF NO IN STAGE 1, PAGE(S) DISCREPANCIES WERE FOUND: ~ YES NO (SCANNING IS COMPLETE AT THIS POINT UNLESS SPECIAL ATTENTION IS REQUIRED ON AN INDIVIDUAL PAGE BASIS DUE TO QUALITY, GRAYSCALE OR COLOR IMAGES) I General Notes or Comments about this Document: 5/21/03 ConservOrdCvrPg.wpd Robert T. Anderson District Land Manager Union Oil and Gas Di,?~';on: Western Region Union Oil Company ~. ~alifornia P.O. Box 6247, Anchorage, Alaska 99502 ' Telephone: (907) 276-7600 · i ~i CC::.,."..M union December 22, 1983 Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99504 TRADING BAY UNIT State of Alaska Nineteenth Semiannual Progress Report for Niddle Kenai "G" Oil Pool, NcArthur River Field Gentlemen: Pursuant to Conservation Order No. 80-A, we enclose herewith the Nineteenth report of pressure maintenance for the Niddle Kenai "G" Oil Pool, NcArthur River Field. Ve/zy truly yours, ""'-"~t' , ~ / /' /" L~ndman Enclosure NINETEENTH SEMIANNUAL PROGRESS REPORT TO THE STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION CONSERVATION ORDER NO. 80A PRESSURE MAINTENANCE PROJECT MCARTHUR RIVER FIELD MIDDLE KENAI "G" POOL DATA TO JANUARY 1, 1984 PREPARED BY: TRADING BAY UNIT - ENGINEERING & PLANNING GROUP INTRODUCTION In compliance with Conservation Order No. 80A, as amended on April 30, 1974, the following is the Nineteenth Semiannual Progress Report for the McArthur River field Middle Kenai "G" 0il Pool Pressure Maintenance Project. GENERAL COMMENTS The "G" Pool Pressure Maintenance Project is in its eleventh year of operations. Out of fourteen production wells, eleven are producing and three are shut-in. Cumulative oil production through November 1983 is 31,23~,673 barrels. The number of water injection wells remains at three. Cumulative water injection through November 1983 is 22,828,532 barrels, with a current average injection rate of 12,342 BWRD. The present and cumulative water injection as a percent of withdrawals are 199 and 92 respectively. As can be seen on the attached production curve, the "G" Rool continues to perform well. Rlans for 1984 are to fracture stimulate one producer to evaluate this as a means of increasing production in the "G" Zone. MCARTHUR RIVER FIELD PRESSURE MAINTENANCE REPORT "G" OIL POOL SUMMARY OF PERTINENT DATA 12/1/83 1. Date of First 0il Production From Field 2. Date Project Started 3. Cumulative Oil Rroduced Since First Rroduction - STB 4. Cumulative Oil Rroduced Since Rroject Started - STB 5. Cumulative Oil Rroduced Since Rroject Started - 6. Cumulative Free Gas Rroduced since First Rroduction - Res B8LS 7. Cumulative Water Rroduction since First Rroduction - BBLS 8. Cumulative Water Rroduced Since Rroject Started - BBLS 9. Cumulative Water Injected Since Rroject Started - BBLS lC. Initial Average Reservoir Rressure e 8850' vss psia ll. Average reservoir Rressure ® 8850' vss psia 12. Number of Injection Wells 13. Number of Rroduction Wells 14. Average Water Injection Rate, June thru November 1983 15. Average Oil Rroducing RAte, June thru November 1983 BBLS/Day 16. Average Water Injection Rate, November 1983, BBLS/Day 17. Average Oil Rroducing Rate, November 1983, STB/Day September 1969 November 1973 31,236,673 18,987,083 23,236,393 0 2,239,261 1,531,348 22,828,532 4,009 3,050 3 11 10,340 4,350 12,342 4,499 NOTE: This report excludes all K-lC "G" production & injection totals. MCARTHUR RIVER FIELD - MIDDLE KENAI "G" POOL HISTORICAL PRODUCTION AND INJECTION DATA MONTHS 1983 JUNE JULY AUG SEPT OCT NOV RATE/BOPD 4,250 4,324 4,171 4,368 4,494 4,499 OIL PRODUCTION MONTH/STB CUM STB 127,514 30,568,029 134,045 30,702,074 129,312 30,831,386 131,027 30,962,413 139,302 31,101,715 134,958 31,236,673 CUM OIL WATER WATER SINCE PROJECT PROD RATE GOR INJ RATE STARTED/STB BWRD SCF/STB BWRD 18,318,439 298 422 18,452,484 318 449 18,581,796 415 456 18,712,823 538 449 18,852,125 623 430 18,987,083 681 374 7,854 7,063 8,478 13,140 13,233 12,342 AVG PRESS RSIA 3,050 3,050 3,050 3,050 3,050 3,050 NO OF WELLS PROD INJ IDLE 9 3 5 9 3 5 9 3 5 11 3 3 11 3 3 11 3 3 Robert T. Anderson District Land Manager Union Oil and Gas Division: Western Region Union Oil Company C(' ;fornia P.O. Box 6247, Anchoraoe, Alaska 99502 Telephone: (907)279-76'~1 4 A A / o · January 24, 1975 State of Al~sk~ Oil ~nd Gas Conservation Committee 3001 Porcupine Drive Anchorage, Alask~ 99504 TRADING BAY UNIT. STATE OF ALASKA Application for Approval of K-22 Well (Hemlock Test) Gentlemen: union Oil Company as Operator for the Trading Bay Unit hereby requests your, approval to the, drilling of the subject well pursuant to Conservation Order No. 80. Atlantic-Richfield, as suboperator of the King salmon platform will drill the above Well directionally from 'said platform, the bottom hole of which will be located on Union-Marathon lease ADL 17594 approximately 200 feet from the common lease boundary line between said lease and Atlantic,Richfield lease ADL 18777, as reflected on the attached plat. The bottom hole location will be outside of the current Trading Bay Unit boundary in the NW¼ of Section 17, T9N., R13W., probing the outer limits of the Hemlock formation of the Field. In the event this well is productive, the Trading Bay Unit Working Interest Owners plan to make application to expand the Trading Bay Unit to incompass the ~rea deemed reasonably productive by this well. · Your admistrative approval is requested pursuant to Rule 5 of said Conservation Order. Very truly yours, . . ARCO Cpt.' HBP · , K- 22 WELL' RING SALMON PLATFORM 0 4000 2000 4000 ' ., UN! ON;t' -t-' \RATHON HBP Cpt. ADL-18751 K. TD ,I,767 · UNION MARATHON T'9N t Cpt. ADL -1759G ,.~l.- t~ ,\ · TO 10,825 ' I ,. 9 . ~-I? . I'.D. iZ,lO 5 T.b. 13,196 D jiO,I e -$1 TD 1t,5 ?0 · . ii, 4 2o G-33 TD 10,7~0 SECOND SEMIANNUAL PROGRESS REPORT TO THE STATE OF ALASKA OIL AND GAS CONSERVATION COMMITTEE CONSERVATION ORDER NO. 80-A PRESSURE MAINTENANCE PROJECT McARTHUR RIVER FIELD - MIDDLE KENAI "G" OIL POOL DATA TO JUNE 1, 1975 PREPARED BY: TRADING BAY UNIT - ENGINEERING & PLANNING GROUP INTRODUCTION In compliance with Conservation Order No. 80-A, as amended on April 30, 1974, the following is the Second Semiannual Progress Report for the McArthur River Field Middle Kenai "G" Oil Pool pressure maintenance project. GENERAL COMMENT The "G" Pool Pressure Maintenance Project is now midway through the second year of operation and is progressing in a stable manner. The injection and producing well status has not changed since the last progress report with 2 injectors, 6 producers and 2 inactive wells. No major wellwork has occurred during the past seven months. RESULTS Cumulative water injection through June 1, 1975, was 3,680,089 barrels with a current average injection rate of 6810 BWPD. The present cumulative water injection as a percent of reservoir withdrawals are 123.4% and 19.7%, respectively. Since the project was begun in November, 1973, injection has exceeded total reservoir withdrawals by 17% with a net overbalance of 537,4.49 reservoir barrels. This current overbalance of injection to withdrawals has reversed the reservoir pressure decline and reservoir pressure now averages 2453 psi. Reservoir pressure has increased approximately 73 psi since the last progress report and the present rate of pressure rise is roughly 10 psi per month. A Summary of Pertinent Data is included as is a Summary of Historical Production and Injection Data. McARTHUR RIVER FIELD PRESSURE MAINTENANCE REPORT - "G" OIL POOL SUb~tARY OF PERTINENT DATA 6-1-?S lo 3, , , ii. 12. 13. 14. 15. 16. Date of First Oil Production From Field ......................... September 1969 Date Project Started ......................................... . .... November 1973 Cum. Oil Produced Since First Production - S.T.B .................... 14,128,148 Cum. Oil Produced 'Since Project Started - S.T.B ...................... 2,'479,441 Cum. Oil Produced Since Project Started - Res. Bbls.. ................. 3,049,712 Cum. Free Gas Produced Since First Production -Res. Bbls ................ ,... 0 Cum. Water Production Since First Production - Bbls ..................... 473,330 Cum. Water Produced Since Project Started - Bbls ......................... 92,928 Cum. Water Injected Since Project Started - Bbls ..................... 3,680,089 Initial Average Reservoir Pressure @ -8450 psia .......................... 4,009 Current Average Reservoir Pressure @ -8450 psia .......................... 2,4S3 Number of InjectionWells ........................... . ......................... 2 Number of Production Wells .................................................... 6 Average Water Injection Rate Nov. thruM ay 1975 Bbls/Day ................. 6,912 Average Oil Producing Rate Nov. thru May 1975 Bbls/Day ................... 4,425 Average Water Injecting Rate, May 1975 Bbls/Day ........................ ...6,810 , Average Oil Producing Rate ~y 1975 STBbls/Day 4 419 TRADING BAY UNIT - MIDDLE KENAI "G" FORMATION HISTORICAL PRODUCTION & INJECTION DATA TiME MONTHS 1974 November December 1975 January February ~rch April RATE BOPD MONTHLY CUMULATIVE cUM. OIL SINCE STB STB PROJ. STARTED-STB 4,428 132,853 13,322,949 1,674,242 4,128 127,960 13,450,909 1,802,202 4,323 134,008 13,584,917 1,936,210 4,848 1'35,620 13,720,537 2,071,830 4,S67 141,580 13,862,117 2,213,410 4,302 129,047 13,991,164 2,342,457 4,419 136,984 14,128,148 2,479,441 WATER WATER COMPUTED PROD. RATE INJ. RATE AVG. PRESS BWPD GOR/CFPB BWPD PSIA 116 1S0 129 132 116 81 119 378 · 354 340 342 353 336 318 6,585 6,089 7,237 6,973 7,197 6,810 NO. OF WELLS PROD. INJ. IDLE 2,395 ~ 2 2 2,406 6 2 2 2,411 6 2 2 2,419 6 2 2 2,429 6 2 2 2,443 6 2 2,453 6 2 2 NOTE: This report excludes all K-10 "G" production TRAILING BAY UNIT G POOL 10000 5000 4000 3000 2000 lOOO J~J,:~!i::::,lii:i.:.-' ~:,L:: iii:.'.- ii~i!i!iiti':.:,:'.!!!.:it.:l.:i::::i:::::!::::.i~;:: :::.~_-' .~;:::~Li:.:: ....................... ~o..,..~..,..,-.~ ,.,. ,, ~ ~.~-.,-.,.~.-.,-~.~..~-,,..-*~ .~ .... ~ .,~ .... · . ~ ~. Jim, .~:~.: ...,: ......... ~ ...... ~ .................................. ] ......... , .......... ~ ............ t ....... ~:l ' ''' ............ ~ -: z--4"~ ~':I~ ' ':l-lt- '~' ' 'I''~;; ti:; ::t::~ I ~-~-i':::: ~:: ~ ~,- : f~'J'!:' "-t ~'- : ,~-j ~ 2.:- ? ~,. ~ ~ ~I '"' ~.,---, .... ...,,....,-+ .,... I.,.,. ...,.-,..,-,.,,., .,, :. ,.-,-,,,..,,-,,+ B .,.,.,:. ...... ,-.,-~.,.,....:, · ,. l~"r. '~I! ............................................................................ 10000 5000 4000 3000 2000 1000 500 19 70~ 19 72 19 74 19 75 19 76 19 78 19.Z9_ 100o 500 4OO 300 200 1o0 FIRST SEN~ANNUAL Pt~DGRESS REPORT TO THE STATE OFALASKA OIL AND GAS CONSERVATION COP~ITI~EE CONSERVATION ORDER NO. 80-A PRESSURE MAINT~N~ PROJECT McAR1/~3R RIVER FIELD - MIDDLE I~d~,LAI "G" OIL POOL DATA TO JANUARY 1, 1975 J A N "~ 6 ~675 DW~O~ OF a~, AND G/~S Prepared by: TRADING BAY UNIT - ENGINEERING & PLANNING GROUP INTRODUCTION In compliance with Conservation Order No. 80-A, as amended on April 30, 1974, the following is the First Semiannual Progress Report of the operations and results for the McArthur River Field Middle Kenai "G" Oil Pool pressure maintenance project. PROJECT OPERATIONS There are l0 wells completed in the McArthur River Field "G" Oil Pool. As of this report there are 6 producing wells, 2 injectors and 2 inactive wells. There has been no change in status during 1974. Only minor workover operations were conducted during 1974. Additional sand filters installed on the Grayling Platform in 1974 enabled increased volumes of filtered Cook Inlet water to be injected into the "G" Oil Pool. The operational problems concerning the G Oil Pool Pressure Maintenance Project were minimal during this period. RESULTS Cumulative water injected to November 1, 1974, was 2,214,793 barrels for an average of 6,068 barrels of water per day. Current injection is averaging 7,400 barrels of water per day. Since water injection was initiated, total reservoir withdrawals have amounted to 1,957,053 barrels, for an average of 5,362 reservoir barrels per day. The pressure decline in the "G" Oil Pool has been arrested as a result of this injection. Due to the increased injection rates in October and with the addition of an injector for the Dolly Varden Platform early in 1975, the reservoir pressure should continue to increase. The modest increases in production shown for the "G" Oil · Pool in the past several months may be directly related to the pressure maintenance effort. A summary of pertinent data to November 1, 1974, and historical production and injection data for the "G" Oil Pool is included following the text. 1 2e e Se ge 9~ 10. 11. 12. 13. 14. 15. 16. 17. McARTHUR RIVER FIELD PRESSURE ~INrFSNANCE REPORT - "G" OIL POOL .... SU~RY OF PERTINENT DATA 11-1-74 / Date of First Oil Production From Field .......................... September 1969 Date Project Started .............................................. November 1973 Cum. Oil Produced Since First Production- S.T.B ...................... 13,190,096 Cum. Oil Produced Since Project Started - S.T.B ....................... 1,541,389 Cum. Oil Produced Since Project Started - Res. Bbls ................... 1,889,743 Cum. Free Gas Produced Since First Production - Res. Bbls ............. Cum. Water Production Since First Production -Bbls ................... Cum. Wat r Produced Since Pro ect Started - Bbls ...................... Cum. Water Injected Since Project Started - Bbls. , ................... Initial Average Reservoir Pressure @ -8450 psia ...................... Current Average Reservoir Pressure @ -8450 psia Number o£ Tnjection Wells Number o£ Production Wells ............................................ Average Water Injection Rate ~y thru October 1974 Average Oil Producing Rate May thru October 1974 Bbls/Day Average Water Injecting Rate, October 1974 Bbls/Day ......... Average Oil Producing Rate, October 1974 STBbls/Day -0- ~ ~.,, ; ,- ~, ,~' 447';712 't ',',~ 67,310 2,214,793 ~'~'"' 4,009 2,380 . 2 6 6,393 3,950 7,400 4,179 NOTE' This Report Excludes Ail K-10 "G" Production & Injection Totals TRADING BAY UNIT o MIDDLF. KENAI "G" FORMATPON HISTORICAL PRODUCTION ~ INJECTION DATA TIME RATE MONTHLY CUMULATIVE MONTHS BOPD STB STB 1973 November December 1974 January February March April May June July August September October 5338 160,154 11,808,861 4485 139,021 11,947,882 4402 136,466 12,084,348. 4661 130,521 12,214,869 4273 132,474 12,347,343 3868 116,036' 12,463,379 3756 116,427 12,579,806 3899 116,978 12,696,784 3939 122,110 12,818,894 3829 118,711 12,937,605 4098 122,937 13,060,542 4179 129,554 13,190,096 WATER CUM. OIL SINCE PROD. RATE GOR PROJ. STARTEDiSTB BWPD ' CFPB WATER INJ. RATE BWPD 160,154 255 635 5424 299,175 207 449 6357 435,641 270 337 566,162 309 346 698,636 257 341 814,672 95 494 931,099 84 488 1,048,077 125 439 1,170,187 194 475 1,288,898 143 501 1,411,835 159 448 1,541,389 143 '.352 5799 5756 5668 5399 5867 6329 6434 6285 6032 7400 COMPUTED AVG. PRESS. PSIA NO. OF WELLS PROD. INJ': 'iDL~' 2340 7 2 1 2334 7 2 1 2322 6 2 2 2311 6 2 2 2512 6 2 2 2316 6 2 2 2325 6 2 2 2336 6 2 2 2547 6 2 2 2358 6 2 2364 6 2 2 .2580 6 2 2 NOTE: This report excludes all K-10 "G" production RHC(12-5- 74) TRADING BAY UNIT G-ZONE O. 0 rn 196~ I ]970 J 19'/I '19 ~ 1.9 ?~3~ 3.9 ~4. 3,9 ?5 . 19 1'6 ].9 1~7___. AFFIb VIT OF PUBLIC, TION STATE OF ALASKA, ) THIRD JUDICIAL DISTRICT, ) ss. ..... .M.~ !.y.... L..:..S. h eke ............... being first duly sworn on oath deposes and says that ................ is the. Le g81 g'l e r...~.., of the Anchorage News, a daily news- paper. That said newspaper has been approved as a legal news- paper by the Third Judicial Court, Anchorage, Alaska, and it is now and has been published in the English language continually as a daily newspaper in Anchorage, Alaska, and it is now and during all of said time was printed in an office maintained at the aforesaid place of publication of said news- paper. That the annexed is a true copy of a ..Le-K-~-l--.-~ot,-iee. b. 06)+ as it was publTshed in regular issues (and not in supplemental form) of said ~v~paper for. a period of .................. insertions, ,1 1 commencing on the ............ day of ....~.~..~..i...l. ......... ~,[9.7.~, and ending on the ................... day of of . !tpril ]9 7~, both dates, inclusive, and that such newspaper was regularly distributed to its subscribers dur- ing all of sa.id period. That the full amount of the fee charged for the foregoing publication is the sum of $ 18'OOwhich amount has been paid in full at the rate of 3O f per line; Mini- mum charge $].0.00. ,. /. '~, , .': ,,. ·,,../ ~...~,,?. : ..) //j , / ~t,,.~.,/.? .,,, . ...... //1.,....~'.~; x~.,/ ..~ , L .Z // x~..~-~-' /. ,/: . .Z. ~'. N . ~ . _ ~ . ~,. :'. .... ~,,~. .~- gZ'~. ~. .......... Subscribed.,,and sworn to before 14 of .~pril , me this ........ day .................... ,9..Zff. the State of Alaska, Third Division, Am:borage, Alaska ¥ COM2~I~ION EXPIRES ...... ........ //...., ~IOTI~ OF PUBLIC H~II~RING st.t, .~'.~'* ~ , ., Om~rtmtnt' of Kltulrl~:,,,,~ces Bivisi~n ~f Oil' ~,.:~ '.' ,,' :,", , ,- .': i:' ;~% ,~ ~' ' p~ny ~f'~Cmll~rnle '~r ~:".e~~ l~e~dl~'Rul~ 4 ,~' Co~a- ti~ Gr$er..Ho.' ~ to.. In,Iude, ~- ~o~e1 = ~:' .a p~rJ . .~,.~,. ~ .fo~ ::t~,,~:~r . ,~ . ~,.-~.,....q(~...:..';:. ' ... . ..... ¢ :r...:.? r.)~ J~'E,~;'.' . C~mmiti,t't~":~t~?"i~:t~.' '~' f~r t~l ~i~1~ '~i~if"ii'~'~:'fil .~1' ~ thi ~r', River ~t~' Mel~. Testi- mony.on the g~olel~ e~d~.engineertng was' prgs~R~'d establlsh~ ~ ,' ~u~e~ '~ek'~' a~l ',,~ls in: the":~Art~. RI~:~'~ ~1'~:~ ~r~sur. e ~:l~tenae~e'. P~['~.:~o~- t~e ' , * . ' : . ,,G~' '. may be ::.,order is Issued' L.from the ~te o~ .'t. hi~' :'p~li~ation In .. which, tO .file.' a.'. ~' .for' hea.rine~ Porcupine. If such a .protest ~s; '+l~ily 'file&, a hearing on'the::.'~a~r will-be held Aprii, ~,:' 197~ :.~t,Wfil,oh:..t.im,t te'sta~nts and. oth&rs m~ ;~e.?'.h~a,rd';' '.If n,o suc~ Wotest is ~meiy"f'il~ .the Commi~e~ ~ill cons aer the sua'nc,e ,of '.a,n .o~d'e~ with.out~ ..a ,hearina. .......... .. ~ : , . (s~?h.bma.s'.R. ~r, shall, J,r. E~cut[ve4 SecretarY,' e.: . ~,'a~k,l Oil" ,In,~: Gas. C~ni~iti,~ ,~itt~ ' ~OT~CE OF PUBLIC HEARinG State of Alaska Department of ~atural Resources ~vision of Oil and Gas Conservation File No. 126 Re: The application of Union Oil Company of California for an order amending Rule 4 of Conservation Order No. 80 to include approval of a pressure maintenance project for the McArthur River Oil Fi eld, Middle Kenai "G" Oil Pool. Notice is hereby given that Union Oil Company of California has requested the Oil and Gas Conservation Committee to issue an order approv- ing a pressure maintenance project for the Middle Kenai "G" Oil Pool of the McArthur River Oil Field. Testimony on the geology and engineering characteristics of the "G" Oil Pool was presented at the hearing on Conservation Order No. 80 which established pool rules for all pools in the McArthur River Field and a pressure maintenance project for the McArthur River Hemlock Oil Pool. The McArthur River Middle Kenai "G" Oil Pool is subject to the Trading Bay Unit Agreement. Parties who may be aggrieved if the requested order is issued are allowed 10 days from the date of this publication in which to file a protest and request for hearing. Place of filing is 3001 Porcupine Drive, Anchorage, Alaska. If such a protest is timely filed, a hearing on the matter will be held at the above address at 9:00 AM April 22, 1974, at which time protestants and others may be heard. If no such pro- test is timely filed, the Committee will consider the issuance of an order without a hearing. ~~ /~~x~~_~/ L, Thomas R. Marshall, Jr. Executive Secretary Alaska Oil and Gas Conservation Committee 3001 Porcupine Drive Anchorage, Alaska 99501 Publish April ll, 1974 NOTICE OF PUBLIC HEARING State of Alaska Department of Natural Resources Division of Oil and Gas Conservation File No. 126 Re: The application of Union Oil Company of California for an order amending Rule 4 of Conservation Order No. 80 to include approval of a pressure maintenance project for the McArthur River Oil Fi eld, Middle Kenai "G" Oil Pool. Notice is hereby given that Union Oil Company of California has requested the Oil and Gas Conservation Committee to issue an order approv- ing a pressure maintenance project for the Middle Kenai I'Gll Oil Pool of the McArthur River Oil Fi eld. Testimony on the geology and engineering characteristics of the "G" Oil Pool was presented at the hearing on Conservation Order No. 80 which established pool rules for all pools in the McArthur River Field and a pressure maintenance project for the McArthur River Hemlock Oil Pool. The McArthur River Middle Kenai "G" Oil Pool is subject to the Trading Bay Unit Agreement. Parties who may be aggrieved if the requested order is issued are allowed l0 days from the date of this publication in which to file a protest and request for hearing. Place of filing is 3001 Porcupine Drive, Anchorage, Alaska. If such a protest is timely filed, a hearing on the matter will be held at the above address at 9:00 AM April 22, 1974, at which time protestants and others may be heard. If no such pro- test is timely filed, the Committee will consider the issuance of an order Thomas R. Marshall, Jr. Executive Secretary Alaska Oil and Gas Conservation Committee 3001 Porcupine Drive Anchorage, Alaska 99501 Publish April II, 1974 STATE OF ALASKA DEPARTMENT OF NATURAL RESOURCES DIVISION OF OIL AND GAS Alaska Oil and Gas Conservation Committee 3001 Porcupine Drive Anchorage, Alaska 99501 Re: The Application of Union Oil ) Company of California for an order ) amending Rule 4 of Conservation ) Order No. 80 to include approval of ) a pressure maintenance project for ) the McArthur River Middle Kenai "G" ) Oil Pool. ) Conservation Order No. 80-A McArthur River Middle Kenai "G" Oil Pool McArthur River Fi eld April 30, 1974 IT APPEARING THAT: 1. Union Oil Company, operator of the Trading Bay Unit, submitted the referenced application dated March 28, 1974. 2. Testimony on the geology and engineering characteristics of the "G" Oil Pool was presented at the hearing on Conservation Order No. 80 which established pool rules for all pools in the McArthur River Field and approved a pressure maintenance project for the McArthur River Hemlock Oi 1 Pool. 3. Notice of hearing on this request was published in the Anchorage Daily News on April ll, 1974 pursuant to Title ll, Alaska Administrative Code, Section 22.540, and no protest was received. 4. The conservation order case number for this file has been changed from No. 126 to No. 80-A since it is simply an amendment to Conservation Order No. 80. FINDINGS: 1. Injectivity tests have been conducted in the G-34 and the G-36 wells completed in the referenced pool. Injectivity indexes indicate that satisfactory injection can be accomplished in the referenced pool using filtered Cook Inlet water. 2. Engineering studies have shown that pressure maintenance would maxi- mize oil recovery from the referenced pool. 3. This pressure maintenance project will not adversely affect the corre- lative rights of any party. Conservation Order No. 80-A Page 2 April 30, 1974 CONCLUSIONS: 1. Reservoir performance indicates the feasibility of a pressure main- tenance project. 2. The project will result in additional recovery. 3. Correlative rights are protected. 4. The project should be approved. NOW, THEREFORE, IT IS ORDERED THAT: Rule 4 of Conservation Order No. 80 is amended to read as follows: The injection of water for the purposes of pressure maintenance, secon- dary recovery or of conducting injectivity tests is hereby permitted in the McArthur River Hemlock Oil Pool and the McArthur River Middle Kenai "G" Oil Pool. A semiannual progress report detailing project operations and results shall be submitted to the Committee in January and July of each year. DONE at Anchorage, Alaska, and~dated Apri. 1 30, 1974 .. -Thomas R. Marshall, Jr., Executive Secretary Alaska Oil and Gas Conservation Committee 'H~'mer L. BurSel 1, Chairman Alaska Oil and Gas Conservation Committee Hoyl e H Alaska Oil and Gas Conservation Committee Union Oil and Gas D(' on: Western Region Union Oil Company of California 909 W. 9th Avenue, Anchorage, Alaska 99501 Telephone: (907) 279-7681 Ufll fl March 2 8,1974 Alaska Oil & Gas Conservation Committee Division of Oil & Gas 3001 Porcupine Drive Anchorage, Alaska 99501 WEST FORELAND AREA State of Alaska Proposed Pressure Maintenance Program McArthur River Field, Trading Bay Unit Agreement Gent 1 emen: Co/zC In accordance with the provisions of Section 2226 of the Oil & Gas Conservation Regulations, Union Oil Company of California, as Trading Bay Unit Operator, requests approval of a pressure maintenance program for the McArthur River Field, Middle Kenai "G" Oil .Pool hereinafter set forth. It is further requested that Rule 4 of Con- servation Order No. 80 be amended to reflect the approval of this project. Hemlock Oil and the West Foreland Oil leases included in and offsetting the each working interest owner. As supported by the engineering and geological data attached, there is a substantial increase in ultimate recovery to be gained by the proposed pressure maintenance of the McArthur River Middle Kenai "G" Oil Pool (hereafter referred to as the "G" Pool). In particular, the injectivity tests demonstrate that the "G" Pool will receive the filtered Cook Inlet water, which is to be the injection medium. The detailed reservoir studies indicate that there will be an increase in recovery by enhanced sweep efficiency as well as by pressure maintenance. This data is summarized in the Engineering and Planning Discussion.' Current plans include utilizing three injection wells as shown on Exhibit C with a fourth injection well, K-3~ to be evaluated in 1975. These locations are so chosen to take advantage of the current limited water influx. Shown on Exhibit C are the wells in the Trading Bay Unit with the 10 wells completed in the "G" Pool highlighted. Other zones producing in the McArthur River Field are the Middle Kena{"Gas Pool, the Pool. Included on Exhibit A are the proposed project with the name of t, AR 3 8 ANCHORAGE Proposed Pressure ~ ~tenance Program West Foreland Area Page 2 March 28,1974 The "G" Pool consists of non-marine, conglomeratic sandstones of Tertiary age and was defined in Conservation Order No. 80. These sands have been described in some detail to the Commission in the application to establish this pool and a brief summary is presented in the Geologic Data Section. The two wells now on injectivity tests, G-34 and G-36, are taking water at a total rate of approximately 6500 BWPD with 3000 psi surface injection pressure. Injectivity indexes of these wells 0.90 and 1.08 indicate that satisfactory injection can be accomplished. Under current plans the total injection rate will be increased by increasing the injection pressure and the addition of the proposed new drilled well from the Dolly Varden Platform, D-34, and the potential conversion of K-30 to injection service. It is anticipated that the maximum rate, with the four wells on injection, will be 16,000 BWPD. Once the reservoir pressure reaches an optimum level, a reduction in injection rate will be made. The timing of this reduction and of all proposed work is dependent on continued analysis of reservoir performance. It is suggested that a progress report of project operations be submitted on a semi-annual basis during the initial period of the program. Once the project has shown response and operation becomes routine, it is proposed that the progress report be submitted on an annual basis. Exhibits D and E are the open hole logs for G-34 and G-36, respectively, in which injectivity tests are being conducted. The casing program for these wells, as sumnarized in Exhibit F, is esSentially the Same Program as will be used for any future injectors. Each injection well will be equipped with a packer above the injection perforations and production casing will be pressure tested before final installation of the injection tubing. Exhibit G is a production summary for January 1974 showing the oil production, water production and gas-oil ratio for each well completed in the "G" Pool at the McArthur River Field. Currently there are 5 wells producing from the "G" Pool which are also completed as dual wells in the West Foreland Oil Pool. The production from these separate pools is segregated downhole by packers and is brought to the surface in separate strings of tubing. The operation of these wells for pressure maintenance will not require any change in current operation. Union Oil Company of California, as Unit Operator, through the sub-operators listed below will conduct the proposed pressure maintenance program: Sub-Operator Platform Union Oil Company of California Grayling 909 West 9th Ave. Anch. 99501 Marathon Oil Company P. O. Box 2380, Anch. 99510 Dolly Varden Atlantic Richfield Company P. O. Box 360, Anch. 99510 King Salmon Proposed Pressure ~ ~tenance Program West Foreland Area Page 3 March 28,1974 There are no other working interest owners participating in the proposed project. The offset operators, as shown on Exhibit H, are all members of the Trading Bay Unit and have been notified of the proposed project. It is therefore respectfully requested, under provisions of Section 2226, (b) of the Oil and Gas Conservation Regulations and Rule 5 of Conservation Order No. 80, that administrative approval be granted for this project. Very truly yours, UNION OIL COMPANY OF CALIFORNIA ~PERATOR Attorney- In- Fact ./~ GEOLOGIC DATA "G" OIL POOL PRESSURE MAINTENANCE l~/,: ~"~'¥"*':~iot~/ OF OIL ~,N~ C~A~ ANCHO~G A. DESCRI~ION 0F STRHC~ Geologic testimony relating to the McArthur River Middle Kenai "G" Oil Pool (hereafter referred to as the "G" Pool) has been previously presented in support of applications for Conservation Order No. 71 (February 27, 1969) and No. 80 (September 23, 1969). Exhibit B is a structure contour map on the G-1 sand which depicts the field structure at the uppermost oil productive interval of the "G" Pool. The scale of the map is approximately 1" = 4000'; contour interval is 100'. As shown by the exhibit, the main structure is a relatively simple, asymmetrical, doubly plunging anticline with flank dips of 6° - 8° on the east and 18° - 20° on the west. The dominant anticlinal axis trends approximately N 10°E. The McArthur River Field structure is limited on the northwest by a large, up to the west, NE-SW trending, reverse or right lateral fault labeled the "Trading Bay Fault" on Exhibit B. The southwest flank is cut by a normal fault that strikes NW-SE and dips to the south at 60°-65o. The apparent displacement on this fault, labeled the "Dolly Varden Fault" on the Exhibit, is approximately 1100' at - 2767' and 875' at - 7120', the upper and lower subsea depths of well control. Continuation of the fault with depth to the "G" Pool productive interval is inferred and has not been verified by wells drilled to date. B. DESCRIPTION OF POOL 1) Definition Conservation Order No. 80 defined the "G" Pool stratigraphic limits to correlate with the interval 9116' to 9695', drilled depth, in the Union Trading Bay Unit State G-7 well. This log is also shown on Exhibit C, which is a structure contour map on the G-2 sand, depicting the area of accumulation or productivity for the "G" Pool. This area, outlined in green and enclosed by the G-2 sand -8910' structure contour, was used to establish the working interest participating area (WIPA) for the "G" Pool. The scale and contour interval are the same as for Exhibit B. 2) Stratigraphy and Reservoir Properties The "G" Pool strata constitute the basal unit of the Kenai Group, Tyonek Formation, Middle Ground Shoal Member, and are lower Miocene in age. Lithologically, these non-marine clastic strata include reservoir rocks ranging from very fine grained sands to conglomerates and interbedded with silt- stone, claystone, and sub-bituminous coals. The reservoir charateristics of the "G" Pool, based on data from a conventional core taken in the Union TBS State G-7 well between 9368' and 9392', drilled depth, were previously described in the application for Conservation Order No. 80, Geologic Data Page 2 2) Stratigraphy and Reservoir Properties - Continued The core data are as follows: Porosity varied from 9.1% to 22.6%, and averaged 18.1%; Permeability varied from zero to 277 millidarcies and averaged 65.3 millidarcies; Core water saturation varied from 36% to 66.9% and averaged 49.2%. From detailed log analysis it has been determined that water saturation values within the "G" Pool productive area vary from 25% to 55% and average approximately 35%. ENGINEERING AND PLANNING DISCUSSION "G" OIL POOL PRESSURE MAINTENANCE RESERVOIR DESCRIPTION A reservoir study, utilizing computer simulation and frontal advance tracking, indicated, ineffective water encroachment and significantly more oil recovery with pressure maintenance in the "G" Pool. The rock properties of the "G" Pool were previously submitted in conjunction with the application to establish Field Rules for this Pool (Conservation Order #80) and are summarized in the Geologic Data section of this application. The most representative "G" Pool oil sample was obtained from D-30 in 1970 and a summary of the fluid properties are attached as Exhibits I and J. The ultimate primary recovery is estimated to be 16.9 percent of the original oil in place. The primary performance ~of the "G" Pool is shown graphically in Exhibit K. Reservoir performance under pressure maintenance operations is calculated to yield an ultimate recovery of 26.6 percent of the original oil in place by maintaining the reservoir pressure above the bubble point pressure. The proposed injection pattern as shown on Exhibit C gives the highest recovery while being the most economic of the 10 injection patterns considered. This injection pattern takes advantage of the limited natural water influx from the north and northeast. The present injectivity tests in G-34 and G-36 indicate that satisfactory quantities of filtered Cook Inlet water can be injected into the "G" Pool. Current plans include drilling D-34 from the Dolly Varden Platform in 1974 for injection service and increasing the total "G" Pool injection to 12,000 BWPD. The possibility of converting K-30S to "G" Pool injection service in 1975 to complete the "G" Pool injection development will be dependent upon the reservoir performance and the influence of the natural water influx. At a maximum injection rate of 16,000 BWPD in 1975, the reservoir pressure is estimated to increase at a rate of 1 psi per day. The reservoir performance will be monitored by use of pressure surveys, production and injection wellprofile logs as well as individual well test data to optimize the ultimate "G" Pool oil recovery. ~' "' 1757q · ~'' ' ' ': 17594 t.,>., ,, ,e,,, 17596 17001 ' -, ......... ,.-~. 1 17602 ANcBORAG~ MAP SC)UP, CE Division of Lands Pvotractit~n Sheet Grid No: S-13-5, S-13-12 State Oil & Gas Leases 18729 1873() 18731 18758 18772 18774 18776 18777 2 I()68 2 l/)t~q ADL210~ SOC&L W,F ,4 T9N-RI4W '°~ ""' T8N-R 14W ,,,ss AMoco PHILLIPS ,~/.Ir D ~ ARCO ,0 ' ' $OCAL MARATHON 2-28 - 83 ADL- 59386 MARATHON [ 2-;'8-85 ADL- 59588 · 2 = Z 8 - 8 ~ ~DL- 59389 LEGEND T. 8. U, OOUNDARY I LEASE BOUNDARY MIDDLE KENAI "G' POOL r.,~ii,-..~.= PARTICl PATI N G AREA T ION--R 13 W tS':' ARCO ~A.~ UN~0N MARA D'32 N e..f'~E~t ~/ D-19~ D.-20S D-Si · D-2 6 D-~ ,-.,.&.. e · ~ o-,o ADL 18 29 j AMOCO PHILLIPS ARCO SOCAL i i ii EXHIBIT A MARCH, 1974 TgN--RI3W TSN-RI3W unlen TRADING BAY UNIT FIFTH REVISION TO PARTICIPATING AREA M~IARTHUR RIVER MIDDLE ~ENAI "G" OIL POOL EFFECTIVE JUNE I, 1970 qC.,'xl.. E: I" ~, R/VISED FEB, lB, 1974. ,/' R 14 W / ,/i R 13 Y,,' ,~ , OIL POOL PRESSURE --, . ...,: ........ EX HI B IT -: + MAINTENANCE B J3 -+ + -+ I' .+ RI~W Possible foulting in FCI~IA not shown RI3W Im lc I_~ I I I I I I TYPE LOG TBU G-7 2. 2 G-6 SD-J ), -,i~' .. s,n~s ..[ UNIONOIL COMPANY OF CALIFORNIA~ + + + + 2 7 5 I I I I I I + '1 1 LEGEND ~) "G" zone - producer I niector / / Proposed / T /~ Proposed 8 location N' 4- injector injector RI4W I 1 I I I Possible faulhn§ m FC I 8~IA not shown RI3~' ,t OIL POOL PRESSURE MAINTENANCE $ .... ~,,~,~..: ....... .~,.,..EXHI BIT C . RI~W i- I I I TYP£ LOG ® .... %~Z':':':':':':'~ I'~'i..:'__.~ ........... ~ UNION OIL COMPANY OF CAL I¢ C,".N , EXHIBIT F "G" POOL PRESSURE MAINTENANCE PROGRAM McARTHUR RIVER FIELD SIZE WEIGHT CASING RECORD GRADE DEPTH(MD) HOLE SIZE CEMF2qT (G-34) 20" 94# H-40 616' 26" 13-3/8" 9-5/8" ,, 61# 43.5# 47# 29# J-55 4714' 17-1/2" N-80 10,954' 12-1/4" C-95 N-80 11,650'-10,857' 8-1/2" 1000 sx G w/ 2% CaC12 & 100 sx G 2000 sx perlite & 800 sx G 1500 sx G 235 sx G 20" 13-3/8,, 9-$/8" 94# 61# 43.5# 47# H-40 J-SS N-80 S-95 599' 26" 5307' 17-1/2" 11,771' 12-1/4" 800 Sx G 2000 sx porlite A-2 mix & 750 sx G 2000 sx G EXHIBIT G "G" POOL PRESSURE MAINTENANCE PROGRAM Mc_ARTHUR RIVER FIELD PRODUCTION - INJECTION SI~Y JANUARY 1974 DAILY AVERAGE PRODUCTION OR INJECTION WELL OIL-BPD WATER-BPD GAS-MCFPD D-30 S.I. S.I. D-31 S.I. S.I. D-32 625 ~-.. 2 G-SO(s) G-31 (s) S82 8 G-32(s) 2154 48 G-3S(s) 399 G-34 - 2655 G-36 - 3144 K-SO(s) 511 13 GOR S.I. S.I. S.I. S.I. 241 386 101 357 210 360 851 395 197 494 -- -- -- 135 264 Total 4554 272 1735 381 (s) These wells are dually completed "G"-West Foreland with production segregated downhole by use of production packers and dual tubing strings. Ail production data in this table is from the "G" Pool only. EXHIBIT H "G" POOL PRESSURE MAINTENANCE PROGRAM TRADING BAY UNIT MANAGEMENT COMMITTEE COOK INLET, ALASKA T. C. Doughty Phillips Petroleum Company 1300 Security Life Building Denver, Colorado 80202 J. L. Rowland Standard Oil Co. of Calif., P. O. Box 7-839 Anchorage, Alaska 99510 W. C. Barton, Ir. Union Oil Company of California P. O. Box 7600 Los Angeles, California 90054 W. M. Iones Amoco Production Company Security Life Building Denver, Colorado 80202 D. M. Mullen Skelly Oil Company Skelly Oil Company 1860 Lincoln Street Denver, Colorado 80203 B.. G.;~ Marathon Oil Company P. O. Box 2380 Anchorage, Alaska 99510 EXHIBIT I "G" POOL PRESSURE MAINTENANCE PROGRAM McARTHUR RIVER FIELD Subsea Datum Pressure at Datum, Initial Temperature at Datum ~'~ ,,!i ~ Bubble Point Pressure ~, Differential Solution Gas-Oil Ra~io Differential Oil Gravity at 60°F ...... Flash Separator Gas-Oil Ratio ~-.:~ Flash Oil Gravity at 60°F ~,~' ~ Flash Separator Conditions ..~.,~i.'~..~ Differential Oil Volume Factor, Initial Differential Oil Volume Factor, Bubble Point Flash Oil Volume Factor, Initial Flash Oil Volume Factor, Bubble Point Oil Viscosity, Initial Oil Viscosity, Bubble Point Average Oil Compressibility 8850 Ft. 4009 Psig 163 OF 1826 Psig 422 SCF/STB 34.0 °AP1 297 SCF/STB 35.6 °API 200, 95 Psig, °F 1.231 RB/STB 1.256 RB/STB 1.214 RB/STB 1.239 RB/STB 1.088 cp 888 cp 9146 x 10-6v/v/psi '~i EXHIBIT J s ..... ' llll'",ll~li-!,, ¢_L,S I~IDDLE KENAt 'G'RESERVOIR -H~',II",I~',, ,,,',,,,',:',',It', ..........,,, I,I .............,," i,!, , ...... ? McARTHUR IVER FIELD ' . .. ,.................... qq+m+c~~~-~-~++!-c,H+~!+ =~.. -~r~.~+. DIFFERENTIAL OIL FORMATION ,,,~ ~ -' qT__:_.~ ..... ~ H-iC[ff-lTr_~ -i4~-'. ' P{llI',I llJ',J ; ',', ....... 1;. ~ 'lTq~, .,' 'tfi'-d~,+i~~..LLi_ '~ii." 2 MS [lllllliJlJll! I J JJ J .............. ',~ ,. ~lbl-gS~,, ~-~,-~,~-~.~-,q-.q~.,~c~,' RESERVOIR PRESSURE ,~_LLLIJ_I] It-~I;Ifil."" LL'-i%-NCi'~L -HI ! t I~'H'~"~-'; HH-H-~4 .-t_4:-_~-¢:~-~-]_~.T: ..... '"' '" ~t~,~ ¢ ~' l~t~,~, "~-~ ' ,, +~{'~4- ::r'- ' -¢~ ' :,' $,4;- -" ;" ' ++~" ~""' -~,', ',', .................',, ~ ................ ~ - ~~ ? ' **-*'~-'+'"' ~ ~-t~ ~~- ~ .- ~ ~I~~ ~ ~ , ......... - , .~ : ~~ "- ' ~'~' ~ :':~ ~*P P ~' -~-+~"~ ~+~ ~""~ ~- ~.,. ~%. ~ ~ :~ ~!~'~"~" ~'~¢' .... ~~+~'~'~' '"' ' ~- ~',~""~ ' ~H+4~ :: ~~ ~-.Si · ........... ~~~~~S~¢t~ ~lllll',ll _..~,,,q~ltil ...... ] i_~ ' ..._" '_' ..... ! ...... ~ ~:~ ~ ~~~-' ' ' ' '" '" ":~'~ ~'~ IIIHII,, , ,,,'"I I ........... - ,,,, .................,.,.,,,,, .............................. .... ,,~.. ~,,, ~.,,.,., ...... ~ ....... ~,,,~~ .... - :~-: ¢.: -~. _. - .q ~,,~ ............... IIII Iiiiiiii i I[ I1~ Iii iiAi lll]llll IIIIlltll Illlllllllltllll IIIIIIIIII111111I ' '' · .,~~_~. ............ .............~~ ,-- ~ ~~~~ ....... ~"~ii~ii~! 41~[,~'''m- ~ ~. ~ ~-' '" "~ ¢~ ~ ............................. ', ........ ~ ~- ~,',~,~,: .... ~tl~~~'m~~- ....... [~ ....... Ilrlllllll Illlll III] r I}I I .... IIIIII~ ,llllff, l I111 ' ' ' 1,1 I J III l[ ...... J ~ ..... ~ , I1 i iii i i i i.i I i ii I I I I I I I I I I I I I II] ~~-F~]'~T' ~"-"~~,,~.,:, ~ ,~'"~ ~- ~.~.~ ~ ~,_.~., ~ ..~~~-~_ j~~"- _ ~$~ ........ ..... IIjIIIIII Ill.MI I IIit111 ~,,,~., ............... , . ,,,, -.- .......... ~+ - Il ', Il', I ...., .... III IIII/ I111 - IIII -- · ' ....... ~r~ ................. 3~~ ¢ .............. **+ .... ......... ~',',',~ !-kff~~ - ~_ -~~ ....... : ~¢ ........ ~,,~,,~ ~~_.. -~.t.h~:~ ,,, .. ~ ......... ..................... ~,, ~,,~~ ~: ~,~~,~,,,~,,,,,,,,~ .... ~ ..... ~-~~ ~._ _.....:~ . .... ~,, ,~i --*',~,,,~ ~- ............. . __ ~,,,,,~ ,~ )~. . ~ ~ ~ -- IlJllll ...... ~ ~ ,.** ........ ,_ ~~~ .... ~. ', III', ', l~l+ ~F: -'- -~t~+ b,-+k~ - -- ~,~,,,~~~~-, ,:, . .~' 22 42.5 2O 18 TRADING BAY UNIT - "G" SAND MONTHLY AVG OIL PRODUCING RATE AND AVERAGE PRESSURE ~ -8450 MARCH 1974 EXHIBIT K N40 35 25 '~ 2O OJ .... 19~_69___ 19.7~0 _ 1974 _ t9 75_, :9 76 ~ e_ZT__ t 9~7~B_