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Home My WebLink About2011 Swanson KGSFChevron Chantal R Walsh Union Oil Company of California Petroleum Engineer, P.E. 3800 Centerpoint Dr., Suite 100 Anchorage, AK 99503 Tel: 907-263-7627 Email waishcalshc@thechevron.com August 12, 201K"ECEIVED AUG 17 2011 Mr. Dan Seamount, Chairman aj a ON & Gas CM G Alaska Oil and Gas Conservation Commission A 333 W. 7th Avenue, Suite 100 Anchorage, AK 99501-3539 RE: 2011 Annual Material Balance Calculations of Production and Iniection Volumes: Kenai Gas Storage Facility #1 (KGSF#1), Swanson River Field Dear Commissioner Seamount: Attached for Alaska Oil and Gas Conservation Commission (AOGCC) review is the 2011 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 12, 2011. 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. Over the last four years, cycles from 2007 — 2010 were fairly consistent, indicating continued reservoir confinement of the gas storage volume. The last injection/production season, 2010 — 2011, showed a deviation from the previous years' trends. At the end of the production cycle the KGSF #1 well had water in the well bore which was not MidContinent/Alaska/ Chevron North America Exploration and Production www.chevron.com present in the KGSF #7A well. This led us to suspect a mechanical issue with KGSF #1. We are currently working over this well, and hope to resolve the issues. If you or your staff has any questions regarding this annual report, please contact me at 263- 7627. Sincerely, C" VlJ IL Chantal Walsh Petroleum Engineer, P.E. Attachments: 1. KGSF #1 Facility Monthly production and injection volumes 2. Tyonek 64-5 Sand POZ Data 3. KGSF #1 Facility (Tyonek 64-5 Sand) - P/Z vs Cumulative Production Plot CC: Whitacre, Dave KGSF 41 Well File KGSF #7 Well File M1dContinent/Alaska/Chevron North America Exploration and Production http //www.chevron.com ATTACHMENT #1 o:XNAUxwCnuwlnu xaasxGaxopnOpaom/nmS*ansunkSwanmm mwa KENAI GAS STORAGE FACILITY #1 (K)GSF#l) MONTHLY PRODUCTION AND INJECTION VOLUMES AMENDED 'O8/1011 Monthly Monthly Monthly Monthly NotVnkdage Total Gas Geo Com Gas Gam (Prod -!nj) Inventory |nj. Prod- }n]. Prod. Cum for P(JZ (Qes'|n'P|aom) Month MCF MCF lACF MCF MCF MCF 1,544,000 Dec -98 O 55'137 55.137 1.488.883 Jon -98 O 78.404 134.541 1.409.459 Fab -09 O 64.367 198.908 1.345.092 KAapSO O 73.920 272.828 1.271.172 Apr -89 O 62.180 335.008 1'208.992 K0aY-99 0 78.912 411.820 1.132.080 Jun -99 O 76.903 488.823 1'055.177 Ju|'yQ 0 72'288 561.091 982.909 Aug'90 O 60'311 821.402 922.598 Sep -99 O 48.657 670.089 873.931 Out -99 O 42.056 712.125 831.875 Nov -99 O 39.385 751.510 782.490 Oec-99 O 33.783 785.293 758.707 Jan'00 O 30.890 825.183 718.817 Feb -00 O 20.895 848.079 697'922 K8ar-00 0 38.219 884.297 659.703 Apr -00 O 35,729 920.025 623.974 K8ay-00 0 22.502 842.528 601.472 Jun -OO O 8,627 851.155 592.845 Jul -00 O 30.397 981.552 562.448 Aug -00 D 58.660 1.038.212 505.788 Sep -00 Q 30.505 1.068.717 475.283 Oct -00 O 28.330 1.098.047 445.953 Nov -00 U 48.633 1.146.680 397.320 Oeo'00 U 28.741 1.176.421 367'570 Jan -01 Q 46.230 1.222.657 321'343 Feb -01 O 47.777 1.270.434 273.588 &4mp01 D 37.213 1.307.647 238'353 Apr -01 D 24.719 1.332.386 211'634 May -01 O 6.196 1.338.562 205.438 Jun'01 106.800 U 1.231.762 312.238 Ju| -01 210.880 O 1.012.102 531.898 Aug -01 228.151 O 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 73.138 142.418 674.226 860.774 Deu'01 28.281 159.046 804.981 730.000 Jon -02 134.429 47.741 718.303 825.897 Feb'02 102.768 65.400 680.935 863.065 Mar -02 250.716 4.607 434.726 1.100.274 Apr -02 107.164 51.831 378.503 1.185407 May -02 89.218 16.147 306'522 1.288.478 Jun'02 106.081 3.868 203.309 1.340.691 o:XNAUxwCnuwlnu xaasxGaxopnOpaom/nmS*ansunkSwanmm mwa ATTACHMENT #1 |oosxsas xmo KENAUGAS STORAGE FACILITY #1 (KGSF#l) MONTHLY PRODUCTION AND INJECTION VOLUMES AMENOED'0018/11 SRU 43-28 �F �#1 KGSF VA Tyonek 64-5 Sand Totals Monthly Monthly Monthly Monthly Net Voiclage Total Gas (]as Gas Gas Gas (Prod |nj) Inventory |nj. Prod. |nj. Prod. Cum for POZ (Gas -in -Place) Month /NCF MCF PNCF K8CF K8CF MCF Jul -02 66.737 18.479 165.051 1.388.949 Aug -02 18.263 140.660 276`448 1.287.552 Sep -02 73.737 80.587 263.298 1.280^702 Dot -02 O 272.859 536.157 1.007^843 Nov -02 O 193.970 730.127 813.873 Dec -02 701 149.810 879.236 664`764 Jmn-03 0 125^601 1.004'837 539.163 Feb -03 O 77.767 1.082.604 461.398 Map03 O 58.978 1.141.582 402.418 App03 O 40.867 1.182.449 361.551 K8oy'03 U 31.252 1.213.701 330.299 Jun -03 0 23.077 1.237'678 308.322 Ju|'03 O 17.937 1'255.615 288.386 AuA-03 O 9.811 1.285.226 278.774 Sep -03 173.513 O 1.091.713 452'287 Oot-03 298.780 O 792.933 751.087 Nov'03 287.672 O 505.261 1.038.739 Oeu03 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 1.128.803 Apr -04 46.681 49.678 420.214 1.123.786 K4ay'04 173.758 1.811 248.289 1.295.731 Jun -04 117.522 U 130.747 1.413'253 Ju| -04 3.936 O 126.811 1.417.189 Aug -04 O O 126.811 1.417.189 Sep -04 83.081 O 43.750 1.580.250 C)ct-04 20.297 37.277 0 38.408 99.138 1.444.862 Nov -04 100.085 48.394 114^424 O -68.877 1.812.977 Dec -04 1.372 5.222 1.523 3.687 '62.963 1.606.983 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 1.248,789 K8ay-05 32.140 88.209 18.126 101.966 437.120 1.108.880 Jun -05 118.349 2.892 60`975 2.438 285.124 1.278.876 Ju|'05 79.421 4.803 98.826 740 94.620 1.449.388 Aug -05 56.470 60.228 81.086 25.269 62.661 1.481.339 8ep'05 76.912 16.301 8.356 11.394 6`088 1.537.912 {]ot-05 44.207 68.184 13.635 94.247 110.677 1.433.323 Nov -05 88.267 45.043 65.065 62.387 84.775 1.459.226 Dec -05 68.931 29.178 97.297 20.153 '32.122 1.578.123 Jan -06 24.400 164.713 21.678 176.620 253.133 1.290.867 Feb -06 123.934 83.744 191.098 90.388 121.233 1.422.787 |oosxsas xmo o CrnOpennmnmnwannvnmw»nsonn*enUnumomF#1 *me N]ENAiGAS STORAGE FACILITY #1 (KGSF#I) MONTHLY PRODUCTION AND INJECTION VOLUMES AMENDED 'O8/18/11 SRU 43-28 1 KGSF #1 =.KGSF VA Tyonek 64-5 Sand Totals Monthly Monthly Monthly Monthly Net Voiclage Total Gas Gas Gas Gas Gas (Pod - |nj) Inventory |pj. Prod. |nj, Prod. Cum for POZ (Gas -In -Place) Month MCF MCF MCF MCF MCF MCF K8op06 54.898 145.807 3E.421 147.941 324.662 1.219.388 Apr -OO 131.597 34.604 81A.982 19^989 161.676 1.382.324 &4ay'06 106.658 4.759 11O.263 26.840 -23.638 1.667.836 Jun -06 50.042 675 14.923 482 -87.444 1.631.444 Ju|'OG O 79.130 O 36.777 28.463 1.516.537 Aug -06 83.182 130 16.045 O -50.634 1.594.634 Sep -08 45.388 O 1E.939 0 -114.880 1.858.939 Oct'06 18.013 58.243 42.099 7.334 '108.474 1.653.474 Nov -08 30.592 82.779 24.730 98.430 16.413 1.527.587 Oec-00 55.743 17.160 182.028 14.859 -100.240 1.853.240 Jen'07 21.588 50'415 34.938 91.765 -14'592 1.558.592 Feb'07 7.025 50,181 41.275 106.823 103'112 1.440.888 Map07 15.008 58.203 83.83O 92.486 154.963 1.389.037 App07 75.784 6.866 185.316 8.751 -90.520 1'634.520 yNoy-07 8.872 23.772 32.855 55.100 '53.175 1.597.175 Jun'07 11.714 U 740 134 -66.495 1.609.495 Ju|'07 7.350 O 0 O -72.845 1.618'845 Aug'07 1.767 891 230 O -73.951 1.617.951 Sep -07 U 253 O 240 -73.458 1.817.458 Oot-07 9.706 18.077 11.553 6.188 -70.472 1.814.472 Mov'07 13.638 40.135 7.563 8.237 -43.301 1.587.301 Deo -07 8.443 61.237 3.820 132.338 138.011 1405.889 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 K8ar-08 84 1.014 O 4.872 407.048 1.138.852 Apr -08 46.111 3.360 11.372 U 352^925 1.191.075 K4ay'08 88.829 12.587 218.108 12.037 70.614 1.473.388 Jun -08 20.487 4.309 32.741 O 21.685 1.522'305 Ju| -08 8.057 D 2.181 O 11.457 1.532'543 Aug'08 19.270 484 O O -7.329 1.551.328 Smp-08 5.064 1.630 U 820 -10.043 1.554.043 Oot'08 15.323 46.294 2.459 5.913 24.382 1^519.618 Nov'08 3.361 95.514 U 82.213 188.748 1.345.252 Doc -08 10.858 92.077 7.285 162.128 434.812 1.100.188 Jan -09 25.898 54.278 31.732 114.632 546.082 097.008 Feb -OA 28994 50'408 42.968 76.145 802.683 941.317 yNur-09 25.801 14.895 10.298 22.451 884.030 938.970 Apr -09 158.105 989 236.901 808 210.531 1'333.469 K8ay-09 36.788 103 134.138 27 35.737 1.504.263 Jun -09 43.429 519 103.093 299 '105.067 1'648.967 Jul -09 O O U 274 -106.693 1.849.693 Aug -09 0 39.305 45'129 228 '111.289 1.655'289 Sep -09 0 25.743 24'073 146 '109.473 1.653.473 [)ct-00 O O 28.450 271 '137.652 1.681.652 o CrnOpennmnmnwannvnmw»nsonn*enUnumomF#1 *me {x |GonxGevCFROnenmind�Swanvvn0wonovnn*emnumoor#lxsumeyo\Preourenv\nnoCAMB KENAI GAS STORAGE FACILITY #1 (KGSF#I) MONTHLY PRODUCTIO14 AND INJECTION VOLUMES AMENDED '0B18/11 SRU 43-281 KGSF #1 KGSF VA Tyonek 64-5 Sand Totals Monthly Monthly Monthly Monthly NetVokdmge Total Gas Gas Gas Gas Gas (Prod |nj) Inventory |n]. Prod. |nj, Prod Cum for POZ (Gas -In -Place) Month MCF MCF MCF MCF MCF MCF Nov -09 550 15,175 34,114 33,063 -124,078 1,668,078 Dec -09 137 8.939 11'074 66.821 '80.129 1.604.130 Jan -10 10.556 36.797 O 12.397 '21.491 1.585.491 Feb -10 O 48.589 17 2.232 28.313 1.514.687 yNep10 O 64.473 O 54.969 148.755 1.395.245 App10 O 13.709 135 18.853 182.182 1.361.818 May'10 O 15.589 10.554 27.928 215.143 1.328.857 Jun'10 384 4.530 188 7.769 226.883 1.317.131 Jul -10 1.616 O O 490 225.743 1.318.257 AuO'10 101.371 U 100.659 U 23.713 1.520.287 Sep -10 139.173 100 164.053 86 -278.327 1'823.327 Oui'10 55197 12808 45^549 8.241 '359.224 1'003.224 Nov -10 56236 46322 46.917 40.527 -375.528 1.910.528 Dec -10 15497 137723 25.327 165.640 -112.989 1.856.989 Jan -11 3083 187449 7.605 194'272 257.084 1.280.916 Feb'11 0 113321 O 158'649 529.054 1.014.040 Map11 O 20680 O 92.628 842.302 901.638 Apr -11 6736 1922 O 502 838.050 005.050 K8oy-11 U O 52.285 O 585.785 058.215 Jun -11 0 0 444.594 O 141.181 1.402.809 {x |GonxGevCFROnenmind�Swanvvn0wonovnn*emnumoor#lxsumeyo\Preourenv\nnoCAMB ATTACHMENT #2 Tyonek 64-5 Sand POZ DATA Kenai Gas Storage Facility #1 (KGSF #1) Wells: KGSF #1 & KGSF #7A 2001 INJECTION CYCLE 6/9/2001 SIT? 0 1.339 380 441 0.9566 461 SITP 7/11/2001 SITP 0 1.146 875 1015 0.9078 1118 121 hr SITP after 618 hr injection 9/18/2001 SIT? 0 0.673 1820 2111 0.8578 2461 4 hr SITP prior to flow due to SHP ESD 9/20/2001 SITP 0 0.678 1810 2099 0.8580 2447 124 hr SITP after 1 day of flow on 9/19 at 5.5 nundd 10/9/2001 SITP 0 0.572 1980 2297 0.8562 2682 18 day SITP during C12 restaging 2002 INJECTION CYCLE 10/9/2001 SIT? 0 0.572 1980 2297 0.8562 2682 B da SITP durin C 1 testa in 4/5/2002 SITP 0 0400 2280 2645 0.8584 1 3081 115 hour SITP 7/12/2002 SITP 1 0 1 0.190 1 2620 1 3039 1 0.8680 1 3501 ISITP 7/26/2002 SITP 1 0 1 0200. 2630 1 3050 1 0.8684 1 3513 IsriT 2003 INJECTION CYCLE 1 0 1 -0.088 1 2717 1 3151 1 0.8720 1 354-- ISITP-27 da GSF41 7/25/20231§!TP 0 1 252 224 260 0.9739 267 SITP from surf PBU 12/29/2003 SITP1 0 1 0254 1 2440 2829 1 0.8620 if 3282 S[ duration= 19 hrs. At shut in = 2 hrs; 2440 psig SITP; Ignores FL 2003/2004 PRODUCTION CYCLE ISITP-8 da GSF41 6/4/2007 SITP 0 4065 2711 3144 12/29/2003 SITP 0 0.254 2440 2829 0.8620 3282 SI duration = 19 hrs. At shut in = 2 Ins; 2440 si SITP; Ignores FL 4/28/2004 SITP 0 1 0.445 1 2075 2406 1 0.8562 1 2810 ISITP - 24 hr 2004 INJECTION CYCLE 2004/2005 PRODUCTION CYCLE 12/5/2004 SITP 0 -0.082 2865 3322 0.8789 3780 SITP-4da 6/8/2005 SITP 0 0.396 2060 2412 0.8562 2817 SITP - 6 hr 2005/2006 PRODUCTION CYCLE 12/30/2005 0 -0.044 2786 3231 0.8751 3692 SITP - 3 days 3/22/2006 SITP0 0.396 1905 2209 1 0.8567 1 2579 1 SITP - < I day (KGSF97a) 0 2007 INJECTION CYCLE 1 0 1 -0.088 1 2717 1 3151 1 0.8720 1 354-- ISITP-27 da GSF41 12/2/2007 SITP 3/26/2007 SITP 1 0 1 0.167 1 2231 1 2587 1 0.8576 1 3017 1 SITP -4day KGSF#I 4/27/2007 SITP 0 -0.117 2828 3279 0.8771 1 3739 ISITP-8 da GSF41 6/4/2007 SITP 0 4065 2711 3144 0.8717 1 3606 ISITP-5 da GSF#1 9/11/2007 SITP 0 -0.088 2717 3151 0.8720 1 3598 1 SITP-27 da KGSF#1 2007/2008 PRODUCTION CYCLE 9/11/2007 SITP 1 0 1 -0.088 1 2717 1 3151 1 0.8720 1 354-- ISITP-27 da GSF41 12/2/2007 SITP 0 -0.043 2604 3005 0.8669 3466 SITP - 6 days KGSF 47A - PMW 1/17/2008 SITP 0 0.243 2078 2397 1 0.8562 2800 SITP - 8 days KGSF #7A 4/8/1008 SITP 0 0.407 1760 2026 1 0.8592 1 2358 JSITP - 37 days KGSF #7A moR TmwrT nm rvrt P 4/8/2008 SITP 0 0.407 1760 2026 0.8592 2358 SITP - 37 days KGSF 47A 5/2/2008 SITP 0 0.353 1925 2218 0.8566 2567 SITP--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 SITP - 22 days(KGSF #1 9/16/2008 SITP 0 -0005 2664 3073 0.8692 3535 SITP - 22 days KGSF #1 9/30/2008 SITP 0 -0.010 2670 3080 0.8694 3543 SITP - 5 days (KGSF #1) 8/15/201112 54 PMO-.WAU\MCBU\Alaska\Depts\AssetDev\C1Gw\Gas CMOpenmind\Swanson\Swanson RiverUnitWGSF#1\Surveys\Pressures\AOGCC AMB Rpt\201 I\KGSF#1 & #7A 64-5 Sd ALL POZ 7-11- 1 1,xIs64-5 POZ Data ATTACHMENT #2 Tyonek 64-5 Sand POZ DATA Kenai Gas Storage Facility 91 (KGSF #1) Wells: KGSF #1 & KGSF #7A Date I Type Test I Gauge Depth, fl I Cum, bc! I ThgP, psia I Res. P, psia I Z I P/Z Comments 2008/2009 PRODUCTION CYCLE 9/30/2008 SITP 0 1 -0.010 1 2670 1 3080 1 0.8694 1 3543 1 S1TP - 5 days(KGSF #1 1/16/2009 SITP 0 1 0.576 1392 1599 1 0.8728 1 1832 1 SITP - 2.5 days KGSF 41 2/19/2009 SITP 0 1 0.626 1376 1579 1 0.8737 1 1807 STT? - 24 hr SI (KGSF #1 & #7A) 2009 INJECTION CYCLE 2/19/2009 SITP 1 0 1 0.626 1376 1579 1 0.8737 1 1807 ISITP - 24 hr SI (KGSF 91 & 97A) 6/14/2009 SITP 0 -0.065 2781 3209 0.8742 3671 STT'1' - 10 days SI KGSF #1 7/13/2009 SITP 0 -0.106 2850 3287 1 0.8774 1 3746 ISITP - 14 days SI(KGSF #1 8/10/2009 SITP 0 -0.106 2828 3262 1 0.8764 1 3722 1 SITP - 42 days SI (KGSF #7A) 2009/2010 PRODUCTION CYCI F. 10/12/2009 SITP 0 -0.109 2774 3218 0.8746 3680 SITP - 23da s GSF #7A 1/24/2010 SITP 0 -0.012 2630 3036 0.8679 3498 SITP - 4 days KGSF #1 3/8/2010 SITP 0 0.035 2528 2919 0.8644 3377 SITP - 4 day SI KGSF #1 & #7A 5/13/2010 SITP 0 0.181 2231 2576 0.8575 3004 SITP - 24 hrS SI (KGSF #1) 2010 INTF.CTION CYCT.E 5/13/2010 SITP 0 0.181 2231 2576 0.8575 3004 SITP - 24 hrs SI(KGSF #1 8/11/2010 SITP 0 0.176 2313 2671 0.8588 3110 SITP - 14 days SI(KGSF #1 10/20/2010 SITP 0 -0.359 3134 3626 0.9042 4009 2010/2011 PRODUCTION CYCLE 10/20/2010 SITP 0 -0.359 3134 3626 0.8842 4009 12/8/2010 SITP 0 -0.349 3021 3500 0.8775 3895 SITP - 24 hours 12/21/2010 SITP 0 -0.200 2727 3176 0.8626 3577 l day SI 3/1/2011 SITP 0 0.533 1123 1310 0.8799 1472 48 hr SI 3/21/2011 Gua ePBU 5300 0.643 1171 0.8895 1316 2011 INJECTION CYCLE 3/21/2011 IGuagePBU 5300 0.643 11710.8895 1316 7/4/2011 Gua a PBU 5300 0.092 2720 0.8628 1 3152 72 hour shut in 7/31/20111 WHY 1 0 1 0.092 1 2395 1 2796 1 0.8644 1 3235 13 weeks shut in 8/15/201112.54 PMO:\NALM4CBU\Alaska\Depts\AssetDev\CIGas\Gas CFT\Openmind\Swanson\Swanson RiverUnit\KGSF#1\Surveys\Pressures\AOGCC AMB Rpt\201 I\KGSF91 & #7A 64-5 Sd ALL POZ 7-11- 1 l N64-5 POZ Data E N y U U 61 V 2 o U c U U 7. c U U j,° c U c � P1jT10 , _d .�., Cl. 0 0 0 0 I N I w ! ! I j / o u U I I o NI 03 U ri1 0 C � Eye I � I I o 00 � I ! i ( t t i 1 I I � I N ! I I i I I o , I v 0 0 0 0 0 0 0 00 0 Cl (eisd ) Z/d