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Home My WebLink About2009 Swanson KGSFChevron Paul M. Winslow Union Oil Company of California Petroleum Engineer 3800 Centerpoint Dr., Suite 100 Advisor Anchorage, AK 99503 Tel: 907-263-7629 Email pwinslowinslow@c@chevron.com RECEIVED Ali; 1 2 2079 Alaska Oil & Gas August 12, 2009 Ar�chEsr, Mr. Dan Seamount, Chairman Alaska Oil and Gas Conservation Commission 333 W. 7th Avenue, Suite 100 Anchorage, AK 99501-3539 RE: 2009 Annual Material Balance Calculations of Production and Infection Volumes: Kenai Gas Storage Facilitv #1 (KGSF#1), Swanson River Field Dear Commissioner Seamount: Attached for Alaska Oil and Gas Conservation Commission (AOGCC) review is the 2009 annual material balance calculation of production and injection volumes for the Kenai Gas Storage Facility #1 (KGSF#1), as required per Storage Injection Order #2A. This material balance includes all primary production from the Tyonek 64-5 reservoir (via the SRU 43-28 wellbore), as well as all storage operations from the two gas storage wells, KGSF #1 and KGSF #7A. Primary production occurred from December 1998 through May 2001 and storage operations are on-going since June 2001. Attachment #1 is a table of monthly gas production and injection volumes for KGSF #1 (formerly SRU 43-28) and KGSF #7A, from the commencement of primary production, through August 10, 2009. Pressures from the Tyonek 64-5 reservoir have been measured/estimated from both downhole pressure buildups and from surface shut-in tubing pressures. The surface readings were then converted to downhole pressures at a common datum of 6,395 ft TVD. These data points are tabulated in Attachment #2 and plotted versus the net cumulative production (production less injection) on the standard P over Z plot, shown in Attachment #3. As noted in previous Annual Material Balance reports, Attachment #3 shows that the early injection cycle pressures deviated above the straight line path established by the primary depletion pressure points. Following the primary production and injection cycle, the next two or three cycles (production & injection) show a consistent trend of the pressure/cumulative production data points migrating further left of the straight line path established by the primary depletion pressure points. The last two or three cycles (2006 — 2009) have been fairly consistent, indicating continued reservoir confinement of the gas storage volumes. MidContinent/Alaska/Chevron North America Exploration and Production www.chevron.com KGSF#1 2009 Annual Report August 12, 2009 Page 2 Note that the final 2008/2009 pressure/cumulative production data point (taken 2/19/09), was taken after a very short shut-in period (only 24 hrs). The reservoir pressure had not yet stabilized, thus it plots low on the P/Z vs. cumulative plot. If the reservoir pressure had been allowed to stabilize, the pressure would have most likely fallen on the same trend as seen in the past two or three production/injection cycles. If you or your staff has any questions regarding this annual report, please contact Paul Winslow at 263-7629. Sincerely, rV-) an Zj Paul M. Winslow Petroleum Engineer Advisor Attachments: MidContinent/Alaska/Chevron North America Exploration and Production http://www.chevron.com O:\NAU\MCBUWIaska\Depts\AssetDev\CIGas\Gas CFT\Openmind\Swanson\Swanson Rive rU n it\KGS F#1 \S u rveys\Pressu res\AOGCC Annual Mat Bal Rpt\2009\KGSF #1 #7A Production Data 8-11-09.xls ATTACHMENT #1 KENAI GAS STORAGE FACILITY #1 (KGSF#1) MONTHLY PRODUCTION AND INJECTION VOLUMES SRU 43-28 / KGSF #1 KGSF #7A Tyonek 64-5 Sand Totals Monthly Monthly Monthly Monthly Net Voidage Total Gas Gas Gas Gas Gas (Prod - Inj) Inventory Inj. Prod. Inj. Prod. Cum for POZ (Gas -In -Place) Month MCF MCF MCF MCF MCF MCF 1,544,000 Dec -98 0 55,137 55,137 1,488,863 Jan -99 0 79,404 134,541 1,409,459 Feb -99 0 64,367 198,908 1,345,092 Mar -99 0 73,920 272,828 1,271,172 Apr -99 0 62,180 335,008 1,208,992 May -99 0 76,912 411,920 1,132,080 Jun -99 0 76,903 488,823 1,055,177 Jul -99 0 72,268 561,091 982,909 Aug -99 0 60,311 621,402 922,598 Sep -99 0 48,667 670,069 873,931 Oct -99 0 42,056 712,125 831,875 Nov -99 0 39,385 751,510 792,490 Dec -99 0 33,783 785,293 758,707 Jan -00 0 39,890 825,183 718,817 Feb -00 0 20,895 846,078 697,922 Mar -00 0 38,219 884,297 659,703 Apr -00 0 35,729 920,026 623,974 May -00 0 22,502 942,528 601,472 Jun -00 0 8,627 951,155 592,845 Jul -00 0 30,397 981,552 562,448 Aug -00 0 56,660 1,038,212 505,788 Sep -00 0 30,505 1,068,717 475,283 Oct -00 0 29,330 1,098,047 445,953 Nov -00 0 48,633 1,146,680 397,320 Dec -00 0 29,741 1,176,421 367,579 Jan -01 0 46,236 1,222,657 321,343 Feb -01 0 47,777 1,270,434 273,566 Mar -01 0 37,213 1,307,647 236,353 Apr -01 0 24,719 1,332,366 211,634 May -01 0 6,196 1,338,562 205,438 Jun -01 106,800 0 1,231,762 312,238 Jul -01 219,660 0 1,012,102 531,898 Aug -01 226,151 0 785,951 758,049 Sep -01 197,762 1,331 589,520 954,480 Oct -01 44,964 60,382 604,938 939,062 Nov -01 73,130 142,418 674,226 869,774 Dec -01 28,281 159,046 804,991 739,009 Jan -02 134,429 47,741 718,303 825,697 Feb -02 102,768 65,400 680,935 863,065 Mar -02 250,716 4,507 434,726 1,109,274 Apr -02 107,164 51,031 378,593 1,165,407 May -02 89,218 16,147 305,522 1,238,478 Jun -02 106,081 3,868 203,309 1,340,691 O:\NAU\MCBUWIaska\Depts\AssetDev\CIGas\Gas CFT\Openmind\Swanson\Swanson Rive rU n it\KGS F#1 \S u rveys\Pressu res\AOGCC Annual Mat Bal Rpt\2009\KGSF #1 #7A Production Data 8-11-09.xls O:\NAU\MCBU\Alaska\Depts\AssetDev\CIGas\Gas CFT\Openmind\Swanson\Swanson RiverUnit\KGSF#1\Surveys\Pressures\AOGCC Annual Mat Bal Rpt\2009\KGSF #1 #7A Production Data 8-11-09.xls ATTACHMENT #1 KENAI GAS STORAGE FACILITY #1 (KGSF#1) MONTHLY PRODUCTION AND INJECTION VOLUMES SRU 43-28 / KGSF #1 KGSF #7A r Tyonek 64-5 Sand Totals Monthly Monthly Monthly Monthly Net Voidage Total Gas Gas Gas Gas Gas (Prod - Inj) Inventory Inj. Prod. Inj. Prod. Cum for POZ (Gas -In -Place) Month MCF MCF MCF MCF MCF MCF Jul -02 66,737 18,479 155,051 1,388,949 Aug -02 19,263 140,660 276,448 1,267,552 Sep -02 73,737 60,587 263,298 1,280,702 Oct -02 0 272,859 536,157 1,007,843 Nov -02 0 193,970 730,127 813,873 Dec -02 701 149,810 879,236 664,764 Jan -03 0 125,601 1,004,837 539,163 Feb -03 0 77,767 1,082,604 461,396 Mar -03 0 58,978 1,141,582 402,418 Apr -03 0 40,867 1,182,449 361,551 May -03 0 31,252 1,213,701 330,299 Jun -03 0 23,977 1,237,678 306,322 Jul -03 0 17,937 1,255,615 288,385 Aug -03 0 9,611 1,265,226 278,774 Sep -03 173,513 0 1,091,713 452,287 Oct -03 298,780 0 792,933 751,067 Nov -03 287,672 0 505,261 1,038,739 Dec -03 264,137 1,456 242,580 1,301,420 Jan -04 30,651 56,710 268,639 1,275,361 Feb -04 42,508 56,096 282,227 1,261,773 Mar -04 18,083 153,053 417,197 1,126,803 Apr -04 46,661 49,678 420,214 1,123,786 May -04 173,756 1,811 248,269 1,295,731 Jun -04 117,522 0 130,747 1,413,253 Jul -04 3,936 0 126,811 1,417,189 Aug -04 0 0 126,811 1,417,189 Sep -04 83,061 0 43,750 1,500,250 Oct -04 20,297 37,277 0 38,408 99,138 1,444,862 Nov -04 100,085 46,394 114,424 0 -68,977 1,612,977 Dec -04 1,372 5,222 1,523 3,687 -62,963 1,606,963 Jan -05 35,347 66,988 771 60,345 28,252 1,515,748 Feb -05 31,778 82,231 3,217 114,252 189,740 1,354,260 Mar -05 43,588 55,099 1,211 78,836 278,876 1,265,124 Apr -05 28,607 35,501 8,081 19,522 297,211 1,246,789 May -05 32,140 88,209 18,126 101,966 437,120 1,106,880 Jun -05 116,349 2,892 60,975 2,436 265,124 1,278,876 Jul -05 79,421 4,803 96,626 740 94,620 1,449,380 Aug -05 56,470 60,228 61,086 25,369 62,661 1,481,339 Sep -05 75,912 16,301 8,356 11,394 6,088 1,537,912 Oct -05 44,207 68,184 13,635 94,247 110,677 1,433,323 Nov -05 68,267 45,043 65,065 62,387 84,775 1,459,225 Dec -05 68,931 29,178 97,297 20,153 -32,122 1,576,122 Jan -06 24,400 154,713 21,678 176,620 253,133 1,290,867 Feb -06 123,934 83,744 191,098 99,388 121,233 1,422,767 O:\NAU\MCBU\Alaska\Depts\AssetDev\CIGas\Gas CFT\Openmind\Swanson\Swanson RiverUnit\KGSF#1\Surveys\Pressures\AOGCC Annual Mat Bal Rpt\2009\KGSF #1 #7A Production Data 8-11-09.xls O:\NAU\MCBU\Alaska\Depts\AssetDev\CIGas\Gas CFT\Openmind\Swanson\Swanson RiverUnit\KGSF#1\Surveys\PressureSWOGCC Annual Mat Bal Rpt\2009\KGSF #1 #7A Production Data 8-11-09.xls ATTACHMENT #1 KENAI GAS STORAGE FACILITY #1 (KGSF#1) MONTHLY PRODUCTION AND INJECTION VOLUMES SRU 43-28 / KGSF #1 KGSF #7A r Tyonek 64-5 Sand Totals Monthly Monthly Monthly Monthly Net Voidage Total Gas Gas Gas Gas Gas (Prod - Inj) Inventory Inj. Prod. Inj. Prod. Cum for POZ (Gas -In -Place) Month MCF MCF MCF MCF MCF MCF Mar -06 54,898 145,807 35,421 147,941 324,662 1,219,338 Apr -06 131,597 34,604 85,982 19,989 161,676 1,382,324 May -06 106,658 4,759 110,253 26,840 -23,636 1,567,636 Jun -06 50,042 675 14,923 482 -87,444 1,631,444 Jul -06 0 79,130 0 36,777 28,463 1,515,537 Aug -06 63,182 130 16,045 0 -50,634 1,594,634 Sep -06 45,366 0 18,939 0 -114,939 1,658,939 Oct -06 18,013 58,243 42,099 7,334 -109,474 1,653,474 Nov -06 30,592 82,779 24,730 98,430 16,413 1,527,587 Dec -06 55,743 17,160 102,029 14,959 -109,240 1,653,240 Jan -07 21,586 59,415 34,936 91,755 -14,592 1,558,592 Feb -07 7,025 59,181 41,275 106,823 103,112 1,440,888 Mar -07 15,008 58,203 83,830 92,486 154,963 1,389,037 Apr -07 75,784 6,866 185,316 8,751 -90,520 1,634,520 May -07 8,872 23,772 32,655 55,100 -53,175 1,597,175 Jun -07 11,714 0 740 134 -65,495 1,609,495 Jul -07 7,350 0 0 0 -72,845 1,616,845 Aug -07 1,767 891 230 0 -73,951 1,617,951 Sep -07 0 253 0 240 -73,458 1,617,458 Oct -07 9,706 18,077 11,553 6,168 -70,472 1,614,472 Nov -07 13,638 40,135 7,563 8,237 -43,301 1,587,301 Dec -07 8,443 61,237 3,820 132,338 138,011 1,405,989 Jan -08 20,892 75,223 751 88,161 279,752 1,264,248 Feb -08 8,162 54,785 8,134 83,015 401,256 1,142,744 Mar -08 94 1,014 0 4,872 407,048 1,136,952 Apr -08 46,111 3,360 11,372 0 352,925 1,191, 075 May -08 88,929 12,687 218,106 12,037 70,614 1,473,386 Jun -08 20,487 4,309 32,741 0 21,695 1,522,305 Jul -08 8,057 0 2,181 0 11,457 1,532,543 Aug -08 19,270 484 0 0 -7,329 1,551,329 Sep -08 5,064 1,530 0 820 -10,043 1,554,043 Oct -08 15,323 46,294 2,459 5,913 24,382 1,519,618 Nov -08 3,361 95,514 0 82,213 198,748 1,345,252 Dec -08 10,856 92,077 7,285 162,128 434,812 1,109,188 Jan -09 25,898 54,278 31,732 114,632 546,092 997,908 Feb -09 26,994 50,408 42,968 76,145 602,683 941,317 Mar -09 25,801 14,995 10,298 22,451 604,030 939,970 Apr -09 158,105 989 236,991 608 210,531 1,333,469 May -09 36,786 103 134,138 27 39,737 1,504,263 Jun -09 43,429 519 103,093 299 -105,967 1,649,967 Jul -09 0 0 0 0 -105,967 1,649,967 Aug -09 0 0 0 0 -105,967 1,649,967 O:\NAU\MCBU\Alaska\Depts\AssetDev\CIGas\Gas CFT\Openmind\Swanson\Swanson RiverUnit\KGSF#1\Surveys\PressureSWOGCC Annual Mat Bal Rpt\2009\KGSF #1 #7A Production Data 8-11-09.xls ATTACHMENT #2 Tyonek 64-5 Sand POZ DATA Kenai Gas Storage Facility #1 (KGSF #1) Wells: KGSF #1 & KGSF #7A Date IType Test I Gauge Depth, R I Cu., bcf I TbgP, psis I Res. P, psis I Z I P/Z Icomments -A ARV PRnT1T TrTTnW 12/5/1998 SITP 0 0 2850 3306 0.8782 3764 SITP 7/27/1999 SITP 6395 0.561 1775 2059 0.8586 2398 SI3P 9/9/2000 BHP buildup 6395 1.069 882 1100 0.9017 1220 1 PBU w/ Gauges FL - 6195' 2/20/2001 SRP 0 1:270 540 626 0.9396 667 ISITP 6/9/2001 SITP 0 1.339 380 441 0.9566 461 lsrrp 2001 INJECTION CYCLE 0 0.153 2565 2974 0.8660 3435 SI"IY- 12 da 6/9/2001 STIP 1 0 1 1.339 1 380 1 441 1 0.9566 1 461 IsTIP 7/11/2001 SITP 0 1.148 875 1015 0.9078 1 1118 121 hr SIR after 618 hr injection 9/18/2001 SITP 0 0.673 1820 2111 0.8578 1 2461 4 hr SITP prior to flow due to SHP ESD 9/20/2001 STEP 0 0.678 1810 2099 0.8580 2447 24 hr STIP after I da of flow on 9/19 at 5.5 mmcfd 10/9/2001 SITP 0 0.572 1980 2297 0.8562 2682 18 day SRP during C12 restaging 20021NJECIION CYCLE 0 0.153 2565 2974 0.8660 3435 SI"IY- 12 da 10/9/2001 STIP 0 0.572 1980 2297 0.8562 2682 8 da SrrP duringC 12 restaging 4/5/2002 STOP 0 0.400 2280 2645 0.8584 3081 115 hour SRP 7/12/2002 STIP 0 1 0.190 1 2620 1 3039 1 0.8680 1 3501 JSITP 7/26/2002 SITP 0 1 0.200 1 2630 1 3050 1 0.8684 1 3513 JSITP 2003 INJECTION CYCLE 0 0.153 2565 2974 0.8660 3435 SI"IY- 12 da 7/25/2003 1 SITP 0 1 1.252 1 224 260 1 0.9739 1 267 ISITP from surf PBU 12/29/2003 JSITP 1 0 1 0.254 1 2440 2829 1 0.8620 1 3282 ISI duration = 19 hrs. At shut in = 2 hrs; 2440 prig STIP; Ignores FL 2003/2004 PRODUCTION CYCLE 0 1 -0.082 1 2865 1 3322 1 0.8789 1 3780 SITP-4da 12/29/2003 STIP 0 0.254 2440 2829 0.8620 3282 SI duration = 19 hshut firs. At in = 2 hrs; 2440 si SRP; Ignores FL 4/28/2004 SITP 0 0.445 2075 2406 1 0.8562 1 2810 ISITP - 24 hr 2004 INJECTION CYCLE 7/14/2004 STOP 0 0.153 2565 2974 0.8660 3435 SI"IY- 12 da 12/5/2004 STIP 0 -0.082 2865 3322 0.8789 3780 SITP- 4day 2004/2005 PRODUCTION CYCLE SRP -8 da KGSF#1 6/4/2007 SRP 0 -0.065 2711 3144 12/5/2004 STTP i 0 1 -0.082 1 2865 1 3322 1 0.8789 1 3780 SITP-4da 6/8/2005 SFIT 1 0 1 0.396 1 2080 1 2412 1 0.8562 1 2817 STIP - 6 hr 2005 INJECTION CYCLE 0 -0.010 2670 3080 0.8694 3543 SITP - 5 days (KGSF 91) 2005/2006 PRODUCTION CYCLE 12/30/20050 -0.044 2786 3231 0.8751 3692 SLIP - 3 days 3/22/2006 STIP 0 0.396 1905 2209 0.8567 2579 STTP - < 1 day (KGSF97a) 2006 INJECTION CYCLE 12/4/2006 SrrP 3/26/2007 STTP inn'] nstw=nm rvri p 3/26/2007 STCP 0 0.167 2231 2587 0.8576 3017 SITP -4day KGSF91 4/27/2007 SRP 0 -0.117 2828 3279 0.8771 3739 SRP -8 da KGSF#1 6/4/2007 SRP 0 -0.065 2711 3144 0.8717 3606 1 SRP -5 da KGSF#] 9/11/2007 STTP 0 -0.088 2717 3151 0.8720 3598 ISITP-27 da (KGSF#1) 2007/2008 PRODUCTION CYCLE 9/11/2007 SRP 1 0 1 -0.088 1 2717 1 3151 1 0.8720 1 3598 1 STTP -27 da GSF#I 12/2/2007 SITP 0 -0.043 2604 3005 0.8669 3466 SRP - 6 days KGSF 47A - PMW 1/17/2008 SITP 0 0.243 2078 2397 0.8562 2800 SITP- 8 da KGSF #7A 4/8/2008 SITP 0 0.407 1760 2026 0.8592 2358 1 SITP - 37 days (KGSF 97A) 70nR FmrprTrnm rvrr F 4/8/2008 SITP 0 0.407 1760 2026 0.8592 2358 SITP - 37 da (KGSF 97A 5/2/2008 SITP 0 0.353 1925 2218 0.8566 2567 STIP - -2 months (KGSF 97A 7/1/2008 SITP 0 0.022 2643 3049 0.8684 3494 SITP - 22 da KGSF#1 7/28/2008 SITP 0 0.015 2648 3055 0.8686 3517 SRP - 22 da KGSF 91 9/16/2008 SRP 0 -0.005 2664 3073 0.8692 3535 SRP - 22 days (KGSF #1 9/30/2008 SRP 0 -0.010 2670 3080 0.8694 3543 SITP - 5 days (KGSF 91) 8/11/20091:32 PMO'WAU\MCBU\P.lmka\Depts\AssetDev\CIGas\USERS\PNMGw Storage\Swanson River\KGSF4!1 & #7A 64-5 Sd POZ 8-10-09.xls64-5 POZ Data ATTACHMENT #2 Tyonek 64-5 Sand POZ DATA Kenai Gas Storage Facility #1 (KGSF #1) Wells: KGSF #1 & KGSF #7A Date IType Test I Gauge Depth, R I Cu., bcf I ThgP, psia I Res. P, psia I Z P/Z Comments 2008/2009 PRODUCTION CYCLE 9/30/2008 SITP 0 1 -0.010 2670 1 3080 0.8694 3543 snP - 5 days (KGSF #1) 1 /16/2009 STTP 0 1 0.576 1 1392 1 1599 1 0.8728 1832 SITP - 2.5 days (KGSF #I) 2/19/2009 STTP 1 0 1 0.626 1 1376 1 1361 1 0.8849 1 1538 1 SIFP - 24 hr SI (KGSF #1 & #7A) 2009 INJECTION CYCLE 2/19/2009 SITP 0 0.626 1376 1361 0.8849 1538 STIP - 24 hr SI(KGSF #1 & #7A 6/14/2009 SITP 0 -0.065 2781 3209 0.8742 3671 SITP - 10 days SI(KGSF #1 7/13/2009 SITP 0 -0.106 2850 3287 0.8774 3746 SITP-14 days SIKGSF#1 8/10/2009 SITP 0 -0.106 2828 3262 0.8764 3722 1 SITP - 42 days SI (KGSF #7A) 8/11/20091:32 PMO:WAU\MCBU\Alaska\Depts\AssetDev\CIGw\USERS\PMW\Gas Storage\Swanson Rlver\KGSF#I & #7A 64-5 Sd POZ 8-10-09.xis64-5 POZ Data 0 0 0 0 0 n? 0 0 0 0 0 0 0 N , , , , a - (6 3 7 H L f o v I L v I O a a 0 0 a u ry C 0 a W > xp 0 �n U H � O U w �I N C) x 0 N 0 Cl C) 0 o 0 c 0 o 0 0 o 0 00 0 0 0 coovkn zia 0 0 0 0 0 n? 0 0 0 0 0 0 0 , , , , a - (6 3 7 H L f o v I L v I