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Home My WebLink AboutCO 162Conservation 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: ~ARIA Scanning Preparation TOTAL PAGES Production Scanning Stage I PAGE COUNT FROM SCANNED DOCUMENT: ~"~-~ PAGE COUNT MATCHES NUMBER IN SCANNING PREPARATION: X YES NO 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) General Notes or Comments about this Document: 5/21/03 ConservOrdCvrPg.wpd STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION 3001 Porcupine Drive Anchorage, Alaska 99501 Re: THE APPLICATION OF UNION OIL) COMPANY OF CALIFORNIA for an) order modifying Conservation) Order No. 115 which pertains) to commingling of production) in the Trading Bay Field. ) Conservation Order No. 162 Trading Bay Field. Trading Bay Middle Kenai "D" Oil Pool. Trading Bay Middle Kenai "E" Oil Pool. Trading Bay Hemlock Oil Pool. February 22, 1980 IT APPEARING THAT: · Union Oil Company of California submitted an application dated January 11, 1980 requesting a modifi- cation of Conservation Order No. 115, which pertains to the commingling of production from certain oil pools'~in the Trading Bay Field. Conservation Order No. 115 amended Rule 3 of Conservation Order No. 93 which pertains to commingling. · Union Oil Company of California is operator of the Monopod, the drilling and production platform in the Trading Bay Field and states that there can be no further drilling in the field since all available drilling conductors have been used. · Approximately 83% of the estimated reserves that can be recovered from the Monopod have been produced. · It is imperative that each wellbore be used to recover the maximum amount of oil. · Many of the wells from the Monopod are dually completed and increased water and sand production from the wells has caused holes in the tubing strings because of erosion. It has become economically infeasible to work over some of the wells to repair the tubing leaks. · The Trading Bay Field Rules require separate measurement of production when the "D" and "E" oil pools are com- mingled although some exceptions to this requirement have been approved. · . Notice of the application was published in the Anchorage Daily News on January 15, 1980. A public hearing was held on January 25, 1980 at the Municipality of Anchorage Assembly Room, 3500 East Tudor Road, Anchorage, Alaska. Union Oil Company of California presented testimony and there were no other testimonies, statements or protests. FINDINGS: · · · The current field rule pertaining to the commingling of pools in the Trading Bay Field must be amended to maxi- mize the ultimate recovery from the field. The commingling of production from the Trading Bay Middle Kenai "D" Oil Pool, the Trading Bay Middle Kenai "E" Oil Pool and the Trading Bay Hemlock Oil Pool will eliminate the need to prematurely abandon wells due to tubing leaks caused by erosion. The total production from all commingled pools in each well can be allocated back to each individual pool based on past production history and fluid entry surveys run annually or whenever significant well production performance variations occur. CONCLUSION: The requested modification in the commingling rules for the Trading Bay Field will prevent waste and the correlative rights of all operators in the field will be protected. NOW, THEREFORE, IT IS ORDERED THAT: Conservation Orders No. 115 and No. 147 are hereby cancelled. Rule 3 of Conservation Order No. 93 is amended to read: Commingling in the borehole of production from the Trading Bay Middle Kenai "D" Oil Pool, the Trading Bay Middle Kenai "E" Oil Pool and the Trading Bay Hemlock Oil Pool is per- mitted. The total production from all pools in each well shall be allocated so that each pool is credited a share of the total production. The allocation shall be based upon past history of production from each pool, production well tests,, and/or fluid flow surveys run annually or when. total produced oil volumes change by as much as 25% over any three months period. The method of production allocation utilized -2- for each commingled well shall be reported monthly by noting on Form 10-405, Monthly Production and Injection Report. All fluid flow surveys run in a well and the analysis of fluid entry from individual pools shall be filed with the Commis- sion by the 20th of the month following the month in which the surveys were run. DONE at Anchorage, Alaska and dated February 22, 1980. Chairman/ Commi s s ioner Alaska Oil and Gas Conservation Commission Alaska Oil and Gas Conservation Commission Harry W. Kugler Commis s ioner Alaska Oil and Gas Conservation Commission -3- AI~E ,Pk.. 0/I 2-C~.~ /¢, O~C. c c. 2. PUBLISHER ADVERTISING ORDER ~'~' NOTICE TO PUBLISHER INVOICE MUST BE IN TRIPLICATE SHOWING ADVERTISING ORDER NO., CERTIFIED AFFIDAVlT OF PUBLICATION (PART 2 OF THIS FORM) WITH ATTACHED COPY OF ADVERTISE- MENT MUST BE SUBMITTED WITH INVOICE. VENDOR NO. DATES ADVERTISEMENT REQU DEPT. NO. A.D. NO. A0- DATE OF A.D. RED: ,.7~-,u.~,';~.,, .!_ 5 1980 THE MATERIAL BETWEEN THE DOUBLE LINES MUST BE PRINTED IN ITS ENTIRETY ON THE DATES SHOWN. BILLING ADDRESS: AFFIDAVIT-OF-PUBLICATION UNITED STATES OF AMERICA "~ t STATE OF ,Z~,C-t,,f..~,,~.' DIVISION. BEING ~IRST DULY SWORN, ACCORDING TO LAW;~SAYS THAT ' ~:; ¢:,'<-.' AND STATE O~:%,S../-" AND THAT THE ADVERTISEMENT, OF WHICH THE ANNEXED IS A TRUE COPY, WAS PUBLISHED IN SAID PUBLICATION ON THE DAY OF %,'.gtLJ.'~'"'t'"7~ 19~, AND THEREAFTER FOR -L/~! (!NSECUT' ,'~- DAYS, THE LAST PUB UCATION APPEARING ON THE /'---4~"~¢DAY OF~. ,/~Z&~-"{~'/'/ ..._19&~ AND THAT THE RATE CHARGED TH. EON IS-NOT IN EXCESS OF THE RATE CHARGED PRIVATE INDiVI, DUALS. :,..,. '.."'SION ...... P,.,C~I~BIEVATION I?'.l-I,~l NO. !:'. ~,_.~A.' '1'~ tippllcafloh M Unlor [,'-. 011 i~41f~n¥ o,f C.~Ii~Ala, dat. t:.':~ January' 11,' ~o fOr aP :' ~_9~.2,,whlch_pert&hll to tile · . Tr~t~ Bay ~ield. i .' .~.t~,. . :~. . M~. Ok 'Con~ Com. ~' minion ~'lM~e ~n. W~r m~l, [ ~1~.. ~mloh.~er No, ~ ~gll~g M prodUCf~n.f~m oi '.'~, ~W' .Iff f~.: Tra~. By' Field, / ~ Bay Field ~ ~ ~e la~ ~ .~[lr~ ~ m~., d~dum~ f. MllOle m 'met ~ ~ F~ ~ must .~.. ~ ~ IU l.' m~xlmum ~fentill.. The o~ra. · .~lf~afion fherl, ~uM ~ ~ ~',M:~ ~s in ~' Trading ' [,:~,,~,r~,:, ,;..,.,,,,, t ,. '~ ,,,(.~, ,~,, ,, , i.,.,~ ,,. ,,,.:: ,, ~, ~ oral ~d ~ltten ~ ~tJI ~ fak~ from all i~ ~1~, . '. ~,~ ~.., , ,,., , .... ,:,, ;' ,,,fi', :,' : ,, , ' I ",:, ,;,,~4,'" ' .~.... :~. '~4 .~ ' w ~.:-. .~..} ~.·., · .... q. ~ ...... . ,, .,. : , . SUBSCRIBED AND 'SJN-ORN TO BEFORE .iV1E THIS/~ DAY O~ 19 'NoTAR"~ PUBLIC FO~ STATE OF MY COMMISSION EXPIRES Z'~ REMINDER ATTACH INVOICES AND PROOF OF PUBLICATION. ADVERTISING ORDER I L 1200 [~tter NOTICE ','0 PUBLISHER (~" NVOI 'A( CE MUST BE IN TRIPLICATE SHOWING 'RTISING OFIDER NO.. CERTIFIEDAFFIDAVIT OF PUBLICATION ,PART 2 OF THIS FORM, WITH ATTACHED COPY OF ADVERTISE- MENTMUST BE SLJBMITTED WITH INVOICE. J JAias]ca Oil & Cas Co.r~sezw-,Cion r ,,~'~,?' I F G£W I n'13001 Por~pir~ Drive ' ' VENDOR NO. 3. RECEIVING COPY DEPT. NO. A.D. NO. 1.0 ~.o37 A0- DATE OF A.D. ,Tan~m~?:: i4.., 19P0 DATES ADVERTISEMENT REQUIRED: THE MATERIAL BETWEEN THE DOUBLE LINES MUST BE PRINTED IN ITS ENTIRETY ON THE DATES SHOWN. BILLING ADDRESS: ADVERTISEMENT STATE OF ALASKA t'~tice of Public IiaarJ. nci' ~.m'~r~r~ C~~, .%T %r.T~'A Oil ~md Cas C~nse~,tion C~:,nission Cbns~e. ticn File Uo. 162 Pa: T]~.:,. a~::~'.~lJ£ati.c)n of Union Oi] C~Fany of ""'" ~-" ,'-,~.~---;: ....v 1! ,.,~.,..,,;;:~.' ,.lanuar~, 1979, for an o~icr .... ' ~., ' -? , . ~" ' n '~ ~:X~L.y] .... :. CLonsaP7abion. Ord~r No. 115 d~toJ. ZucCust 15, 1972, %J~z..,].. [:er~¢~ ~ ~ .otJ.c.e is hcz,.;ky qlven t.:',t.t Unie!':~ Oil (l-'r~¥,..~n" c.>:f (..,::.] ...... cl.,t,.,.:, r~'n.~esf:~ tl.e A].as].:a Oil b'~e ':'ra:t~i,n.q Pay Field is ~'~ tJ.:e lab:)~-~-':'r'-,~',.,,.. :,.:..~. c:~ J.~ "~.~(z,.t,ctz"q "' '-,~ ii:Cc:, .......... +-]-,,r~, are no r:orc~ c,:::7~tuctors availat:le on the "~P,,---,',."~,..,,,.~...,;.. "~.,- il'ill mc, re ~eils an:':i t~t .]..~ ...... ~.~ ........ "'~' '~ [:2' 'F~ ~"~ rx'~:~c,.~"{-;~'P~'~ ,~.,,.~ "~'"'- ~"' ~at' Field. A [:.ublic };e~:i:-~<, will ~'.~ held :Ln tfna"" 'c'-,- ~ ....................... i' ~.,i L~Z .c:~ '~.: '~dor }to~t, 7~'~cbora.ge, A!as'ka at 9:00 ~.~ on ,Tanuazl 25, 1980. Cnion ' '~ ,'- ' ~c.....:t~,.:} in sup[~rt of ~ir application ~zy I?. },tug]er (7~::~issioner Alas],:~ Oil L Gas e~nrezvat'.iou Ol~'{:tJ. ssion TO BE COMPLETED BY ORDERING DEPARTMENT DIV. & PROG. FUIIC- TI( N , J ,., 'SUB FUNC- TION 10 -- OBJECT RECEIPT HWY. FUNCT. PROJECT LEDGER 'PER CENT OR ITEM NO. PAGE NO. i OF I~., PAGES REQUISITIONED BY / DIVISIONAL APPROVAL DATE ENTERED TOTAL ALL PAGES HEREBY CERTIFY THAT THE L FNCUMBERED BALANCE N T APPROPRIATION CITED HL-REON SUFFICIENT TO COVER THIS pl.. CHASE ANO THAT THIS PURCHA IS AUTHORIZED HEREUNDER, CERTIFYING OFFICER VOUCHER NUMBER . : :. '.: t:,.,~;~-,,..:~,~ ~ ~I': OIL fqtxlI"~ . ~,4~ ~.~,,,~ ~. . ..... - ~2. _ ,.' . ' "'"'~"~"':' ~~ -~ t:' _ , =. ,_,. , . , ~/0-- ~ ('~-.4C~:3'>' ~ ~ .... :~.~"~'~t~.' 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".:-~ '.%,':..- .~ · ' -..:' ,,, .. · '-.,:..';-"..'., '?,'.,'. :.' .-. ' ~'~ ',: '. ~'~-'..- ~-..~,~.,*"~..' , t ~ ~. ~ .... ·. .. ., ~ ~ .. · . , ~ ~ .. . · . ?:1~ ' '~'"~~~'~ ~'.'~,,~~ :~s~~'~T,'.' ~ '. 'z~'~'~ ~'~.:"~~,;'~ :T?~'~'~ ~.~,~~.~,:~'~.~. · ,~, ~,, ' ' '~r ', ,,, ' '"' ~,""?' ' ? .... ,~1 r;' , , ;~:~,', ..~,,~ ,., ...,~ ...':....~,~, j , . . ,. ~ ..... ,, . , , . , k.'~-~'"."~]': :,, '~":.u¥~,.~.,,. ":.,..,..~'."a ~':'. , ' ,,'~' ,. "~ '%:"? ~" ?"~," ": .... . '~.'" '"" .:.' ' ..... ' ...... ": -~ "~". ...... ..:' '%.: :~:'..~ .-,,. .' ~ ...... ~ ..... ~ .. ~.., .,. ~.. 4 ...... ~ ~ .. ~. ~. ~ .... ~ ~ .... ,., . ....._ .~ . ~ ,,,, ~?.:::, ,q~,..~,,~., ,, ,?,,,, ~?., ~(, , '~' Union Oil and Gas ~"~sion: Western Region Union Oil Company ot California P.O. Box 6247, Anchorage, Alaska 99502 Telephone: (907) 276-7600 Telex: 90-25188 union Robert T. Anderson District Land Manager .January 11, 1980 Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99504 Attention: Mr. Hoyle H. Hamilton TRADING BAY FIELD State of Alaska Application for Modification of Field Rule 3, Conservation Order 115, Dated August 15, 1972 Gentlemen: Union Oil Company of California, on behalf of itself as Operator, and Marathon Oil Company, hereby requests Rule 3. Commingling, of Conservation Order No. 115, dated August 15, 1972, be deleted and the following modified Rule 3. Commingling be substituted therefore: "Commingling in the borehole of production from the Trading Bay Middle Kenai "D" and "E" Oil Pools with the Hemlock Oil Pool is allowed'. Allocation of production between the "D", "E" and Hemlock Oil Pools shall be reported monthly on Form 10-405. The Monopod is in the late stages of its producing life. Approximately 83% of the recoverable reserves have been produced. All available slots on the platform have been drilled, therefore it is imperative that every wellbore be used to its maximum potential. Increased water produCtion has resulted in increased sand production and additional errosion resulting in holes in the long string of many dual completions. It has become economically infeasible to pull these just to repair tubing leaks. This will cause wells to be shut-in or one zone in a dual completion to be eliminated. This will result in the loss of production and ultimately in the loss of reserves. Alaska Oil and ~ Conservation - 2 - f~ Commission January 11, 1980 The Middle Kenai Oil Pools, D and E and Hemlock zones account for approx- imately 63% of the ultimate recoverable reserves from the Monopod Platform. These three zones have produced 33 mm bbls. or 61% of the cumulative production from the platform. The D and E Pool are defined within the Lower Tyonek Formation of the Middle Kenai Group whereas the Hemlock Pool lies within the Lower Kenai Group Hemlock Formation. Strata within these formations are generally lenticular and often discontinuous. The Tyonek Formation is typically composed of well indurated to semi-unconsol- idated, fine to very coarse grained, clean quartzose to clayey, poorly sorted sandstone and conglomerate interbedded with siltstone, silty mudstone, bentonite, and coal. The Hemlock Formation is a clayey to sandy, pebble to boulder conglomerate, interbedded with pebbly sandstone, minor siltstone and occasional coal. D Zone oil is 27.6°API gravity with a bubble point of 2502 psig and a solution GOR of 476 scf/bbl. E Zone oil is 29.8°API gravity with a bubble point of 2706 psig. Hemlock oil is 31.1°API gravity with a bubble point of 1622 psig and a solution GOR of 249 scf/bbl. The D zone is currently under pressure maintenance while the E and Hemlock zones are not. Based on material balance work, there is an active water influx in the Hemlock which has succeeded in maintaining reservoir pressure. Current reservoir pressure in the D zone is approximately ?~2560 psig while the reservoir pressure in the Hemlock is approximately 2100 psig. E zone pressures cannot be determined since all E zone wells are commingled with the D zone. A copy of this application is being sent concurrently to Texaco, Inc. the only other affected operator. Your favorable consideration of this application is requested. Very truly yours, Robert T. Anderson cc: Marathon Oil Company Texaco, Inc. Superior Oil Company RECEIVED Union Oil and Gas ~"'ision: Western Region Union Oil Company of California P.O. Box 6247, Anchorage, Alaska 99502 Telephone: (907) 276-7600 Telex: 90-25188 unl( n Robert T. Anderson District Land Manager .January 11, 1980 Mr. Harry Kugler Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99504 TRADING BAY FIELD State of Alaska Application for Modification of Field Rule 3, Conservation Order 115, Dated August 15, 1972 Dear Harry: Enclosed is a revised Application for Modification of subject Rule 3 covering commingling of the Middle Kenai D and E Oil Pools with the Hemlock Oil Pool, Trading Bay Field. As you pointed out the initial application requesting modification of Conservation Order 57 was in error, as Conservation Order 57 was superseded by Conservation Order 93; Rule 3 of which was further modified by Conservation Order 115. Your proPosed hearing date of January 25th is agreeable and we will present testimony in favor of this application at that time. Thank you for your consideration. Enclosure cc: Marathon Oil Company Texaco, Inc. Superior Oil Company Vary truly yours, Robert T. Anderson ik :p" District Land Manager I"~" "" , Union Oil and Gas ~' '~sion: Western Region Union Oil Company of California P.O. Box 6247, Anchorage, Alaska 99502 Telephone-(907) 276-7600 Telex: 90-25188 J~nuary 7, 1980 Alaska Oil and Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99504 Attention: Mr. Hoyle H. Hamilton TRADING BAY FIELD State of Alaska Application for Modification of Field Rule 3, Conservation Order 57, Dated February 23, 1968 : COMM'J~ COMM I RES ENG CONFER: '- - ~FiL~'" ........ Gentlemen: Union Oil Company of California, on behalf of itself as Operator, and ........ ,., Marathon Oil Company, hereby requests Rule 3. Commingling, of Conservation i) Order No. 57, dated February 23, 1968, establishing the Field Rules for the Trading Bay Field be deleted and the following modified Rule 3 , .... ':;'":' Commingling be substituted therefore: .... "Commingling in the borehole of the Middle Kenai Oil Pools is hereby permitted. Commingling in the borehole of the Middle Kenai Gas Pools is hereby permitted. Commingling in the wellbore of the Middle Kenai 0il Pools and Middle Kenai Gas Pools is not permitted. Commingling of the Middle Kenai Gas Pools with the Hemlock Oil Pool is not permitted. Commingling of the Middle Kenai Oil Pools wi'th the Hemlock Oil Pools is permitted." The Monopod is in the late stages of its producing life. Approximately 83% of the recoverable reserves have been produced. Ail available slots on the platform have been drilled, therefore it is imperative that every wellbore be used to its maximum potential. Increased water production has resulted in increased sand production and additional errosion resulting in holes in the long string of many dual completions. It has become economically infeasible to pull these well, just to repair tubing leaks. This will cause wells to be shut-in or one zone in a dual completion to be eliminated. This will result in the loss of production and ultimately in the loss of reserves. Alaska Oil and GAs Conservation Commission - 2 - January 7, 1980 The Middle Kenai Oil Pools, D and E and Hemlock zones account for approx- imately 63% of the ultimate recoverable reserves from the Monopod Platform. These three zones have produced 33 mm bbls. or 61% of the cumulative production from the platform. The D and E Pool are defined within the Lower Tyonek Formation of the Middle Kenai Group whereas the Hemlock Pool lies within the Lower Kenai Group Hemlock Formation. Strata within these formations are generally lenticular and often discontinuous. The Tyonek Formation is typically composed of well indurated to semi-unconsol- idated, fine to very coarse grained, clean quartzose to clayey, poorly sorted sandstone and conglomerate interbedded with siltstone, silty mudstone, bentonite, and coal. The Hemlock Formation is a clayey to sandy, pebble to boulder conglomerate, interbedded with pebbly sandstone, minor siltstone and occasional coal. D Zone oil is 27.6°API gravity with a bubble point of 2502 psig and a solution GOR of 476 scf/bbl. E Zone oil is 29.8° AP1 gravity with a bubble point of 2706 psig. Hemlock oil is 31.1°API gravity with a bubble point of 1622 psig and a solution GOR of 249 scf/bbl. The D zone is'currently under pressure maintenance while the E and Hemlock zones are not. Based on material balance work, there is an active water influx in the Hemlock which has succeeded in maintaining reservoir pressure. Current reservoir pressure in the D zone is approximately 2560 psig while the reservoir pressure in the Hemlock is approximately 2100 psig. E zone pressures cannot be determined since all E zone wells are commingled with the D zone. A copy of this application is being sent concurrently to Texaco, Inc. the only other affected operator. Your favorable consideration of this application is requested. cc: Texaco, Inc. Supperior Oil Company Very truly yours, Robert T. 'Anderson ,~/ ?-IR-&"7 o~--/o-- (og l- z¥ -/o? "' / ~ xj_ z._l- 11 ' /Iq I19, t ~- h- /o.-,-/-?7 Notice of Public Hearing STATE OF ALASKA Alaska Oil and Gas Conservation Commission Conservation File No. 162 Re: The application of Union Oil Company of California, dated January 11, 1979, for an order modifying Conservation Order No. 115, dated August 15, 1972, which pertains to the Trading Bay Field. Notice is hereby given that Union Oi]. Company of California has requested the Alaska' Oil and Gas Conservation Commission to issue an order modifying Conservation Order No. 115, which per- tains to the commingling of. production from oil pools in the Trading Bay Field. The operator states that the Trading Bay Field is in the late stages of its productive life, 'there are no more conductors available on the Monopod to drill more wells and that each wellbore must be used to its maximum potential. The operator further states that without modification there could be a loss of reserves in the Trading Bay Field. A public hearing will be held in the Municipality of Anchorage Assembly Room, 3500 E. Tudor Road, Anchorage, Alaska at 9:00 AM on January 25, 1980. Union Oil Company of California will present testimony in support of their application' and oral and written statements will be taken from all interested parties. Harry W. Kugler Commissioner Alaska Oil & Gas Conservation Commission Lz z.,,/c, ,'J Lt ~Cl; o ,',.; .4 /4 / (, (c) ,':4~' 2.'7 4 I ,4 q it 17 TV- /c'.'O~'" //) ': ) Gl ) ,,':} /I :4 Id, /2c 2.2- /q- xq. 3> ~ 4.~ z,47 ,,z-~7 '75 : ~ ~, 7 :33'7 13-0 gL.. 7 ?~? ,' ~ 7?' .,4... /z 77 3%? /$4 2ol f/ /,~ ~/ /~ i/~ ./76 '-I :'7 I~-~" z 57 /.5 2.,'/ L.," (,,: :,..:,) .- ?~"~_ 1£/ /? 7Z // ~.'~ Z 7 ,I , 2. ~G EIGHTEENTH SEMIANNUAL PROGRESS REPORT TO THE STATE OF ALASKA OIL AND GAS CONSERVATION COMMITTEE CONSERVATION ORDER NO. 93 PRESSURE MAINTENANCE PROJECT TRADING BAY FIELD - 'lCll AND "D" POOLS FAULT BLOCK I~I,A DATA TO JULY 1, 1979 STEVE LAMBERT BILl_ HATCH PREPARED BY' RESERVOIR ENGINEER RESERVOIR ENGINEERING ASSISTANT INTRODUCTION In compliance with Conservation Order No. 93, Rule, the Eighteenth Semiannual P.rogress Report is submitted to the State of Alaska Oil and Gas Conservation Committee. GENERAL COMMENT The Trading Bay Field pressure maintenance project consists of two distinct water injection operations in the "C" Pool and "D" Pool of the II-A Fault Block. The "C" Pool project is into it's eighth year of operations. The present well count is seven producing wells and two water injection wells. Cumulative water injection, as of July 1, 1979, is 21,028,797 barrels and cumulative oil production since the beginning of the in- jection project is 10,769,278 stock tank barrels. The "D" Pool project is into it's tenth year of water injection. There are a total of five producing wells and two injection wells. Cumulative water injectiOn, as of July l, 1979, is 44,389,043 barrels and cumulative oil production since the beginning of the injection project is 19,830,555 stock tank barrels. PROJECT RESULTS AND OPERATIONS "C" Pool The two "C" Pool injectors, A-12 and A-29, are injecting a total of approximately 6900 BWPD. Production response remains good with current production averaging 2199 BOPD. The primary producers are A-11S, A-14, A-23S and A-25S. The watercut continues to increase in all producers .with A-25 currently producing over 94% cut and A-10S producing at an 86% 'cut. All other wells are producing at less than 50% cut with A-11S, the driest well, producing 2% water. Well A-16S developed a tubing leak and was shut-in in June. This. well is scheduled to be worked over in the first half of 1980. Exhibits I, II, and III show pertinent production and pressure history for the IlCll Pool waterflood. "D" Pool The "D" Pool injectors, A-5RD and A-19, are injecting a total of approximately 8000 BWPD. Current production from five producers is averaging 2623 BOPD. The watercut 'in the downstructure wells continues to increase with A-13S making 49% water~ A-llL making 42% water, and A-IOI_ making 59% water. Well A-2S is the driest producer making only 1% water. Wells A-8S and A-13S currently have tubing leaks and are scheduled to be worked over this fall. Exhibits IV, V, and VI show pertinent production and pressure history for the "D" Pool waterflood. EXHIBIT I TRADING BAY FIELD PRESSURE MAINTENANCE PROJECT - 'lCII POOLS SUMMARY OF PERTINENT DATA 7/1/79 1. Date of First Oil Production From Pool 2. Date Test Injection Started 3. Cumulative Oil Since First Production - STB 4. Cumulative Oil Since Injection Started - STB June 1967 April 1 972 15,414,544 10,769,278 5. Cumulative Oil Since Injection Project Started - RES. BBLS 11,784,146 6.. Cumulative Free Gas Produced Since Project'Started - RES. BBLS 7. Cumulative Water Production Since First Production - BBLS 8. Cumulative Water Produced Since Project Started - BBLS 9. Cumulative Water Injected Since Project Started - BBLS lO. Initial Average Reservoir Pressure ~ -4400 ft. - psig. ll. Current Average Reservoir Pressure @ -4400 ft. - psig. 12. Number of Injection Wells 13. Number of Production Wells 14. Number of Idle Wells 1.5. Average. Water Injection Rate 1st half of 1979- BBLS/DAY · 16. Average Oil Production Rate 1st half of 1979 - BBLS/DAY 3,760,661 7,894,892 7,817,583 21,028,797 2,037 1,442 2 7 2 6,927 2,596 TFIADING BAY FIELD '2A "C" POOL AVERAGE PRESSURE -4400 ft VS. CUMULATIVE OIL PROD'UCTION £XIIIBIT II 2200 2000-- 1800 1600 1400 1200- IOO0 0.0 I _ i . 2.0 4.0 6.0 I 8.0 I 0.0 I 2.0 14.0 16.0 18.0 CUMULATIVE OIL PRODUCTION - MM BBLS EXHIBIT III ioo% TRADING BAY FIELD "C" POOL 2-A FAULT BLOCK z 50% EL 0% 20,000 .,, CUT ~ I I ' GROSS B/D .~ WATER / it I. 1967 68 ~9 70 71 72 73 74 I 75 76 77 78 79 "80 81 82 83 ~o~oo 5000 ~000 3000 2000 1000 500 400 300 200 I00 I00,000 I0,000 I000 I00 u D 0 i U u EXHIBIT IV TRADING BAY FIELD PRESSURE MAINTENANCE PROJECT - 'ID POOLS SUMMARY OF PERTINENT DATA 7/1/79 1. Date of First Oil Production From Pool 2. Date Test Injection Started 3. Cumulative Oil Since First Production - STB 4. Cumulative Oil Since Injection Started - STB 5] Cumulative Oil Since Injection Project Started-Res. BBLS 6. Cumulative Free Gas Produced Since Project Started-Res. BBLS 7. Cumulative Water Production Since First Production - BBLS 8. Cumulative Water Produced Since Project Started - BBLS 9. CumUlative Water Injected Since Project Started - BBLS · 10. Initial Average Reservoir Pressure ia -5628 ft. - psig. l l. Current Average Reservoir Pressure @ -5628 ft. - psig. 12. Number of Injection Wells 13. Number of Production Wells 14. Number of Idle Wells 15. Average Water Injection Rate 1st half of 1979 - BBLS/DAY 16. Average Oil Production Rate 1st half of 1979 - BB/.S/DAY November 1967 March 1970 24,340,172 19,830,555 23,175,739 12,556,668 7,53'9,494 7,528,701 44,389,043 2,637 2,018 2 5 2 8,030 2,525 TRADING BAY FIELD 2A "D" POOL AVERAGE PRESSURE -56'28 ft VS. CUMULATIVE OIL PRODUCTION EXHIBIT V UJ C~ W 27OO 250O 23OO 2100 1900 17OO 1500 0.0 2.0 4.0 INJECTION STARTED I 6.0 8.O 10.0 CUMULATIVE i 12.O 14.0 16.0 18.0 20.0 OIL PRODUCTION - MM 22.0 24.0 BBLS 26.0 28.0 30.0 TRADING BAY FIELD ' ~x,~T v~ "D" POOL 2-A FAULT BLOCK ~oo% z so% 0_ OO/o~ I0,000 5OO0 3000 ZOOO IOOO 500 ,. IOO z 0 GROSS B/D il ! I I I I / / t t '1 I I 1967 68 69 70 71 72 · 73 i 74 75 76 ~ 78 79 I 80 81 82 83-- _.J IOO,O00 ~ I I0,000 -) Z Z 0 0 I000 13::::: IO0 ,,,z,~ ,' ¢ OL£G ol ~77 ,' ,~ 2.~?- ,' ~¥/ ~3 / ?z l& 70 1 '77 7/? I/~- ...... z...9_:~::4, ............. ,11~. ,/o i.~. d)CT' '7'7 12. £Z 7 7d :, /L.~. ', : , .............. ,,c.4./D /' .9 L-.?' 2 2 t ::£// f41D / oz 7V bi /3o q'? ?o i ig(_,35 /? /0 0 ?_)q_, /Ooff~21 /(~. ;,.. ? 2-/c:o