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Home My WebLink About2014 Endicott Oil PoolHilcorp Alaska, LLC October 8`h, 2015 Cathy Foerster, Chairman Alaska Oil & Gas Conservation Commission 333 W. 7th Avenue, Suite 100 Anchorage, Alaska 99501-3539 RECEIVED OCT C 9 2011'r RE: DUCK ISLAND UNIT, ENDICOTT FIELD, ENDICOTT OIL POOL, STATE OF ALASKA, 2014 ANNUAL RESERVOIR REVIEW Dear Commissioner Foerster: Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 1400 Anchorage, AK 99503 Phone: 907/777-8445 Fax: 907/777-8580 vhughes@hilcorp.com In accordance with Conservation Order No. 462, Hilcorp Alaska, LLC ("Hilcorp"), as Operator, hereby submits for your review the following Annual Reservoir Review for the Endicott Field. This is the 14`h Annual Reservoir Review and corresponds to events during the 2014 calendar year. The Endicott Field has been on production since October 1987. A. Progress of Enhanced Recovery Project and Reservoir Management Summary During 2014, no new wells were drilled or sidetracked in the Duck Island Unit. Therefore the locations of all the wells in the Duck Island Unit have remained unchanged. Production and injection statistics are summarized in Table 1. Average daily oil production from the Endicott field was 7,704 bopd and average daily gas injection was 302 mmscfpd. During 2014, injected fluid was calculated to be 8,811 thousand -reservoir barrels (MRB) less than reservoir voidage. At year end, the reservoir overall cumulative voidage replacement ratio was 0.93. The average reservoir pressure varies between zones. Hilcorp became the official Operator of the Endicott Field effective November 18, 2014. As a result, the historic reservoir simulation model developed by the previous operator will no longer will be utilized in the enhanced recovery or reservoir management. Hilcorp will consider building a full field reservoir simulation model in 2016. Table 1: ENDICOTT FIELD 2014 OVERVIEW STATISTICAL SUMMARY Oil, RB WELL STATISTICS Water, MRS As of 12!3112014 Full year (1) As of Dec -14 (2) Formation Gas, MRS Producers 50 50 Injectors 22 22 7,042.681 6798.795 13,841.476 13.841.476 3,530864,086 NdT'ES� ; t j Well count-tate reflects ONLYIhose wells viNch contrbuted to prDduction-injecton durirg the respective }sar Feb -2014 ?21 ALINe yells es cif December 2014 6.677, 055 6.067.590 PRODUCTIONIINJECTION STATISTICS 6280.706 6.067 590 Cumulative Start - -680 974 -1,362.259 -255,174.64E Up through "Production 2014 12!31/14 !Oil (BBL) 2,555553 466,482,743 :Gas f.mcr) 119,888,715 3,062,069,041 Water (BBL) 75,315,341 1.446.366,568 Injection 5292413 10 431, 250 52 166.646 3.823,001, 847 Water (BBL) 75,315,341 1,788,693,437 Gas fMCF) 110,104,025 2.758,002,011 Balance 275,516 6742337 Cum Production (MRB) 159,360,733 3,930,195,732 ?Cum Injection (MHB) 150,549,429 3.667,572,031 Over/Under (MRB) -8,811,312 -262,623,701 DAILY AVERAGE RATE DATA 2014 6,680,140 6.339.171 Production 6,104, 628 Oil, BOPD 7,704 Gas, MCF,i D 334,617 267630 Water, BWPD 209,397 13501,905 92.426.127 3,863,261.126 Injection 6,258,439 6.508.848 lWater, BWPD 207,243 -734,618 5.159,210 -258,971,599 Gas, MCFPD 301,820 6.646408 ,,AVERAGE RESERVOIR PRESSURE 13,301.246 105727,373 3876562.372 Average of surreys obtained in 2014 Variable ps a B. Voida2e Balance by Month of Produced Fluid and Infected Fluids - 2014 Produced Fluids Fluids Month Oil, RB Free Gas, RB Water, MRS Total Voidalle, Year Cum since MRS Cum, MRS start-up, MRS Formation Gas, MRS Water, MRH TotalNet Injection Year Cum since MRB Cum, MRS slart-up, MRS Cumslnu Injection, Year start-up MRS Cum, MRS MRF Jan -2014 315.799 7.408167 6798,795 14,522,761 14.522761 3765,357,760 7,042.681 6798.795 13,841.476 13.841.476 3,530864,086 -681.265 -681.285 -254,493.674 Feb -2014 284 625 6.677, 055 6.067.590 13, 029, 269 27.557 030 3.798,367.029 6280.706 6.067 590 12.348, 296 26.189.772 3, 543,212382 -680 974 -1,362.259 -255,174.64E Mar -2014 293 559 7.194, 328 6, W.661 14183.568 41.735598 3, 812.570, 597 6,758.398 6,695681 13 454.079 39.643.831 3.556.666.461 -729.489 -2.091.748 -255904.137 Apr -2014 242122 4896714 5292413 10 431, 250 52 166.646 3.823,001, 847 4,50Z 301 5,292413 9.794714 49, 438, 566 3.566461,175 -636.535 -2.728263 -256.540, 672 Maj,4014 275,516 6742337 6.454.668 13.472.521 65.639,368 3.836474.367 6,167398 6.454,668 12,617066 62055.637 3,579,478241 -855,455 -3.583738 -257.396,121 Jun -2014 265, 543 6,680,140 6.339.171 13284 854 7&.924.223 3 849, 759, 222 6,104, 628 6.339,171 12, 443.999 74.499.630 3.591, 522,240 -840855 -4.424.593 -258,236, 982 Jul -2014 267630 6.725426 6,508848 13501,905 92.426.127 3,863,261.126 6,258,439 6.508.848 12.767,287 87256.917 3,604,269.527 -734,618 5.159,210 -258,971,599 Aug -2014 266.855 6.646408 6,387983 13,301.246 105727,373 3876562.372 6.222,055 6.387983 12,610,038 99876.955 3,616899565 -691,208 5850418 -259.662,807 Sep -2014 243,458 6.51B,447 6.053 282 12.815,187 118.542 560 3.889.377.559 6,072.081 6053.282 12.125 363 112 002318 3.629, 024 928 -689.824 -6,540.242 -260,352.631 Oct -2014 253,649 6,615.928 6.240.569 13,110,166 131.6:52.726 3, 902,487.725 6,147, 326 6.240, 569 12,387, 915 124, 390.232 3,641, 412, 842 -72Z251 -7.262493 -261,074,882 No,2014 345,665 7,006.164 6.008, 223 13.362.052 145.014, 777 3, 915,849, 776 6626,225 6,008, 223 12, 634, 448 137.024680 3.6U,047.290 -727,604 -7.990,097 -261.802.466 0-2014 30,131 7479, 726 6.468 099 14345 956 169.360.733 3.930. 195, 732 7.056.643 6,46800 13.524, 742 150, 549.422 3, 667572, 032 -821,214 $.811.312 -262.623.701 3.452.552 80.592818 75.315,341 159.360.733 76.234.081 76.316.341 160.549.422 -8.811-712 Page 2 C. Summary and Analysis of reservoir pressure survevs within the pool Static bottomhole pressures collected in 2014 are summarized below. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATCON COMMISSION RESERVOIR PRESSURE REPORT S. L'faealw 1. MY, l,a �ElipbraCOxfYdlHke Bn[. P_0_lGor 19 OIZAn&f ra9r A]MW 99319-E412 .. arr. wlNYw Krnl. 1 Ri14sM M'. .nxrt M1xgviiro Gi,Ua.Y!! 1-4-4 Duck &A dLbntlEndlcaS Frdmkt FWtUtidkmKd Peal 10000 22 4.69 .,f nw.e.' ur)nnnoew hG nfr,. Ysr Mrt_[n. M,Izn I. U3 _Wo- n. a, ^!f! TrnP. •[d rvma a4, ! TM�ab gni onYY Yt rl Mlan lcfl [VCM[S 1.r Heenw.l tu,tt. IIr,lrxJs:ia Tav:tPYY 4931-9983,9936-4363. 49333392, 5%2-9909. 11164-14LL9..20099- 10104, 1[0449-]0899, 10 0 7 5-1018 9, 103ao- i 10733, 10059-20000, 30154-10184,. 10359- 50099, 1[031-108!2,. 2-886(-16 WG292177LOCOO O 2:1111[0 53A 9972.9396 2/9,121114 279 SSHP 1 1901 11,CW 3,700 111000 &4291 1700 I.OWi-2 50029217430203" I..*D1C0 5261 10368-14870 3fWN14 2390 SSHP 230 10,000 4,0" LC1008 OMI 4021 459 1-913 9 4, 99975391, 9950.9371, 44914994. 499D-"91, 9597.4311, 10017-1@121,108321- E 10037, 4491-30034, 10119-16101 30104- 10109,LCO07-10088-.. 30350-1DOQ7,. 2013W 1013,4-33 1 50829223000008 O I 220180 5261 10307, 4869.5909. 311!VZ0141 21119 SSHP 1 233 1G.0001 3,593 IRO)a 00328 3846 9981-9985, LCWZ- 1=23AXX 311829213220100 0 228100 KI 10014, 10021-1002 'Wof2414 00 $SHP 193 9,944 3553 MCOO 024 355a 4-16011- 50029221040100 0 2S01M3 K2B 9980.3993 412212814 00 SRHP NO 10,008 4119 LAOM OA3 4119 2.3640-14 50a2922014C003 O 2.20160 K34, 20029-18035 432311914 48 SSHP 200 9AC10 4303 10,000 0.13 4109 X903381, 9919-9921. .-_...,. 9929-9931,99,69.4951. 4950.9988. 9%29%0. 9383-9988, €0011- 10711[, 1[045-1088@, 10074.16890, 1011w 2144440-1 5DQ29217070100 O 1 -IBO K3'B, K3K 10113, 10341-19134 41'2*20141 163 SSM- 1 190 9,2301 30771 Lg003 009 3608 3-1}4K-33 500242137100010 240189 K28 46133871, 9878-9988 113012014 03 SB44P 215 9,8100 4oY_P !0,003 O.i4 1313 1-2lfK-25 30029220170003 O ZNIDOKZA 49333373 Sf1f2914 aB8 SSHP 230 10,000 _ 3918 MGM 009 3968 X33-9948, 99709075, 10109-10017,.10321- 1-40-16 SQa24224a10003 0 2211/10126 10724, IC062-10307 3f3fZa14 48 SSHP 2C4 19,CCC 4065 10;007 0.19 4102 "111-9927, 9909.9@91. 0332-10061,.10094- 30332-10863,,10094- 1 0317-22 1 5Q➢292191500M O 2IC3C 1+1180 101,117 Sfd442434 52 SSHP 202 00 9,9 3008 IGCOa 0:63 3 049 - 2 48,6 3 5DO292ZD1200M D 220100 K38, K3C 10012-10009 511712414 54 SBM- 206 10,0[0 4297 LAC00 0.43 4297 983@-9683, %98-9411, 9369.9341, 4489 10332, 10033-10046,. 1030 4-108 42,. 10110- 2.2a41-15 50029220480WO 0 2201W GB, K34 1013a 5{2112414 90 SSHP 209 11,003 1149 14000 Ott 1149 1.3340.23 38829210720000 0 220100 NIB, K34 9672-10170 5123/2414 22J ISSHP 200 9,530 2020 14CM 009 2625 49489933, 4971 -STP, 99-93383, LOW4- 10012, IMBB-10143, 3CO07-1007,4,, 1012L- 2-4WS-11 308I921921020Q 0 220100 KK 10135 Sf23/2Q14 58 SSHF 200 9,900 2033 IRM 004 2043 4953.9907, 5970-9397, 10082-10815.10033 4-14615,3 50029218030103 a ZNIDO 830 10051, 1C081-10389 5131/2014 31 SSHP 216 10,000 2028 IROM 034 2028 1-SOfz.41 30629219400000 0 220110 K3A 49811-4980, 4990-4998 a42f201J 737 SSHP 230 16,000 4549 18003 034 4519 i-6240-28 38019217890000 0 220108 K38, Kai 91083-12,704 7'q V2014 55 SSHP 1 203 9,900 3280 LAC03 028 3308 1194F-85 546292230900000 22[1106 K2B 11'48-11,I]4 ?f23f24t1 SO SSM- 206 9,850 3993 10,000 0.11 JOSS The following key wells in the Endicott Pool will have static bottomhole pressure measurements captured in 2015; Key Well Program 4-02 1<313, K3C 2-04 K2A 1-61 K26 2-52 1<313, K3C 3-03 K2A Page 3 D. Summary and Analysis of Gas -Oil Contact or Gas Monitoring Surveillance Plan. The following table summarizes the results of the logs run in 2014 for gas monitoring. END 2014 GOC Monitoring Program Well Location Log Type Log Description Date Log Results Notes 1-27 MPI Gas Saturation Log CCLJGR/Press/RST- Sigma 7/29/2014 GOC at 10,580'MD (10,014TVD) Well fluid packed priorto log 1-01 r0PI Gas Saturation Log CCLJGR/Press/Temp/RST- Sigma 5/25/2014 GOC at 11,865'MD (9,951'TVD) Well fluid packed prior to log 1-03 MPI Gas Saturation Log CCLIGR/Press/RST- Sigma 7/25/2014 GOC at 10,222'MD (9,972TVD) Well fluid packed prior to log A field wide current GOC is not likely to be identified as the Kekiktuk sands have several subzones that are vertically separated and have different permeability. In addition, faulting in the reservoir may lead to hydraulic isolation or partial pressure communication within a sub zone. E. The FollowinE Year Gas -Oil Contact or Gas Monitoring Surveillance Plan. In 2015 we will run a cased hole pulsed neutron log in the 1-01 well to monitor GOC. Additional candidates may be identified and logged as part of the initial field study of the Endicott Oil Pool. F. Results and Analysis of Production and Infection log surveys, tracer surveys, observation well surveys and any other special monitoring Three new production profiles were obtained in 2014. The following table summarized these profile results. Well Location Log Type Log Description Date Log Results Notes 1-27 MPI Production Profile Spin/Temp/press/Ghost/'Deft/GradioJGRJCCL 7/26/2014 Majority gas production above Lower perf intervals (10,600`-10,838'MD) 10,56TIVID (9,999TVD) producing minimal gas 3-21 SDI Production Protide GR/CClJTEMP/FRES/GRADIO/ILSIDEET/E85 7/12/2014 Producing below GOC 12,327'MD Indicates mostly water, minimal oil & gas (9,936 -TVD) contribution from open perfs 12,327-12,340' 1-61 MPI Production Profile GR/CCL/TEMP/PRES/GHT/ILS/RATIFDRIFBS 8/2/2014 100% gas from 10,363'-10,390'MD Upper pert intervals (10,241'-10,272'MO) (10,070'-10,079TVD) added in March 2014 producing minimal gas Sampling from the previous waterflood tracer program has been discontinued. No current tracer program is in place. G. Future Development Plans & Review of Annual Plan of Operations and Development Hilcorp intends to maintain and increase unit production through implementation of various initiatives, including: • Replacing SSSVs and returning shut-in wells to production; • Optimizing gas lift systems; • Fixing broken wells with a rig (planned start Jan 2016); • Perf adds; • Gas and Water shut offs; • Conduct active water flood surveillance to ensure injecting and producing wells are performing to expectations; and • Continue comprehensive field study to re -map all major horizons to identify potential drilling opportunities. Sincerely, Vanessa Hughes Reservoir Engineer - Endicott Page 4