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HomeMy WebLinkAbout2017 Pretty CreekHilcorp Alaska, LLC W1 February 20, 2018 MAR 0 2 201g AG, Mr. Hollis French, Chair Alaska Oil and Gas Conservation Commission 333 W. 7h Avenue, Suite 100 Anchorage, AK 99501 Re: 2017 Annual Material Balance Calculations Pretty Creek Gas Storage Facility, Pretty Creek Unit #4 Dear Commissioner French: Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 100 Anchorage, AK 99503 vhughes@hilcorp.com Phone: 907/777-8445 Fax: 907/777-8310 Attached for your review is the 2017 "Annual Performance Report' for the Pretty Creek Gas Storage Facility (PCU #4), as required per AOGCC Storage Injection Order #4 (SIO #4). This material balance report covers the primary production period through the 2017 gas storage operations. The 51-5 gas storage reservoir was in active use for all of 2017 and was an important component of total gas deliverability for the Cook Inlet. There is one active well that is used for injection and production — Pretty Creek Unit #4 (aka PCU #4). Attached find monthly injection and production data for 2017. Hilcorp has performed material balance calculations on the 51-5 reservoir to provide assurance of continued reservoir confinement of the gas storage volumes. Supporting data is attached in numerical and graphical form for the convenience of the reader. As of December 31, 2017 the estimated reservoir pressure in the 51-5 was approximately 1545 psig as estimated with a shut in tubing pressure taken on 12/29/2017. All production and injection cycles performed in 2017 consistently match the historical P over Z trend established by past performance of this reservoir. These data points are plotted with the historical data and they conform to the overall curve as shown in the attached figure in red squares. Sincerely, Anthony McConkey Reservoir Engineer Attachments: 1) Pretty Creek Unit #4 Production/Injection Volumes 2) 51-5 P/Z Data 3) 51-5 P/Z vs Cumulative Production Plot CoPy c 0 U cl C 0 U O 4 -a - CD CD CC 0 0 C ci °] `° L � U C) Q N 0 CD o 0 0 0 0 0 0 0 0 0 N c0 CO (piosW) uoiloo['ul uoilonpoad I• 0) cu 0 Attachment #2 P/Z Data ATTACHMENT #2 -- PCU P/Z DATA (51-5 Sand) Parameter Value OH - MD OH --TVD Gas Gravity 0.563 Top 5152 3679 Bench Datum 5152 midperf 5162 3685 Datum Temp. 106 Bottom 5172 3692 Avg Te m p. 83 Wellname Date Test Type MTD, psia Pressure at Z Factor Datum Pressure, Psia Cum Gas, bcf P/Z, Psia 2002 - 05 Primary Production Z Factor DatumMTD, Pressure, Psia Cum Gas, bcf P/Z, Psia PCU 4 51-5 PCU 4 45-0,51-5 55-6 02/03/02 1457 0.8533 1457 0.2500 1707 PCU 4 45-0 s 51-5 05/111/02 1270 0.8661 1270 0.8600 1466 PCU 4 45-0 a 51-5 04/10/03 1026 0.8862 1026 1.7200 1158 PCU 4 45-0 5/7/2003 1095 0.8801 1095 1.7300 1244 PCU 4 45-0 04/20/04 687 0.9196 687 2.0300 747 PCU 4 51-5 07/06/04 1021 0.8866 1021 0.8700 1152 PCU 4 51-5 09/20/04 910 0.8970 910 1.0000 1015 PCU 4 51-5 02/07/05 683 0.9200 683 1.2900 742 PCU 4 51-5 02/13/05 669 0.9215 669 1.3000 726 PCU 4 51-5 09/30/05 475 0.9429 475 1.6500 504 2006/2007 Production/Injection Cycle Wellname Date Test Type Pressure at psia Z Factor DatumMTD, Pressure, Psia Cum Gas, bcf P/Z, Psia PCU 4 51-5 02/09/06 726 0.9154 726 1.3000 793 PCU 4 51-5 05/03/06 1061 0.8831 1061 1.0260 1201 PCU 4 51-5 09/27/06 1222 0.8697 1222 0.8842 1405 PCU 4 51-5 10/11/06 1246 0.8679 1246 0.7985 1436 PCU 4 51-5 10/24/06 1257 0.8671 1257 0.7826 1450 PCU 4 51-5 11/07/06 1360 0.8596 1360 0.6621 1582 PCU 4 51-5 11/10/06 1350 0.8603 1350 0.6598 1569 PCU 4 51-5 11/20/06 1354 0.8601 1354 0.6355 1574 PCU 4 51-5 12/03/06 1363 0.8594 1363 0.6174 1586 PCU 4 51-5 12/20/06 1406 0.8566 1406 0.5440 1641 PCU 4 51-5 12/24/06 1419 0.8557 1419 0.5310 1658 PCU 4 51-5 12/28/06 1414 0.8560 1414 0.5269 1652 PCU 4 51-5 01/08/07 1436 0.8546 1436 0.5091 1680 PCU 4 51-5 02/05/07 1482 0.8518 1482 0.4351 1740 PCU 4 51-5 05/07/07 1589 0.8459 1589 0.1765 1879 PCU 4 51-5 06/05/07 1629 0.8438 1629 0.0708 1930 PCU 4 51-5 12/12/07 1595 0.8455 1595 0.0077:±1886 2008 Production Cycle PCU 451-5 01/01/08 1567 0.8470 1567 0.0440 1850 PCU 4 51-5 01/22/08 1544 0.8483 1544 0.0783 1820 PCU 4 51-5 02/25/08 1442 0.8543 1442 0.2623 1688 PCU 4 51-5 04/28/08 1458 0.8533 1458 0.2686 1709 2008 Injection Cycle PCU 4 51-5 05/17/08 1501 0.8507 1501 0.2120 1764 PCU 4 51-5 06/23/08 1600 0.8453 1600 0.0484 1893 PCU 4 51-5 06/26/08 1599 0.8453 1599 0.0442 1892 PCU 4 51-5 07/31/08 1658 0.8425 1658 -0.0775 1968 PCU 4 51-5 08/07/08 1655 0.8526 1655 -0.0770 1941 PCU 4 51-5 09/22/08 1 1 1616 1 0.8445 1 1616 1 -0.0765 1 1914 2009 Production Cycle 2/20/2018 Attachment #2 P/Z Data PCU 4 51-5 02/19/09 1265 0.8665 1265 0.4747 1460 2009 Injection Cycle PCU 4 51-5 04/08/09 0.8643 1294 0.4747 1497 PCU 4 51-5 11/30/09 1652 0.8428 1652 -0.1267 1960 2010 Production Cycle PCU 4 51-5 102/21/10 1 1624 0.8441 1 1624 -0.1256 1924 PCU 4 51-5 06/24/10 1 1622 0.8442 1622 -0.1060 1921 2010 Injection Cycle 0.8676 1660 -0.4324 1913 PCU 4 51-5 PCU 4 51-5 09/01/10 1805 0.8365 1805 -0.4467 2158 PCU 4 51-5 10/15/10 SITP 1660 0.8424 1861 -0.6671 2209 PCU 4 51-5 11/01/10 1 1858 0.8347 1858 -0.6671 2226 2011 Production Cycle PCU 4 51-5 07/05/11 1 0.8434 1 1638 1 -0.1256 1942 2011 Injection Cycle PCU 451-5 11/01/11 JSITP 1688 0.8337 1 1893 1 -0.7611 2271 2012 Production / Injection Wellname Date Test Type Pressure at psia Z Factor DatumMTD, Pressure, Psia Cum Gas, bcf P/Z, Psia PCU 4 51-5 02/22/12 . SITP 1660 0.8676 1660 -0.4324 1913 PCU 4 51-5 04/16/12 SITP 1585 0.8707 1585 -0.2582 1820 PCU 4 51-5 05/18/12 SIBHP 1536 0.8487 1536 -0.2007 1810 PCU 4 51-5 06/12/12 SITP 1522 0.8735 1522 -0.1257 1742 PCU 4 51-5 07/15/12 SITP 1534 0.8730 1534 -0.1243 1757 PCU 4 51-5 08/07/12 SITP 1578 0.8710 1578 -0.1759 1812 PCU 4 51-5 09/05/12 ISITP 1 1606 0.8698 1606 -0.2214 1846 PCU 4 51-5 10/21/12 JSITP 1594 0.8456 1594 -0.2037 1751 PCU 4 51-5 12/31/12 SITP 1356 0.8821 1356 0.1452E E1537 2013 Production / Injection Wellname Date Test Type Pressure at MTD, psia Z Factor Datum Pressure, Psia Cum Gas, bcf P/Z, Psia PCU 4 51-5 01/19/13 ISITP 1411 0.8779 1411 0.1136 1607 PCU 4 51-5 02/04/13 JSITP 1383 0.8794 1383 0.1444 1573 PCU 4 51-5 04/19/13 ISITP 1416 0.8776 1416 0.1366 1614 PCU 4 51-5 06/20/13 JSITP 1519 0.8724 1519 -0.0057 1741 PCU 4 51-5 07/20/13 SITP 1519 0.8724 1519 -0.0057 1741 PCU 4 51-5 08/10/13 SITP 1519 0.8724 1519 -0.0057 1741 PCU 4 51-5 09/20/13 SITP 1527 0.8720 1527 -0.0222 1751 PCU 4 51-5 11/10/13 SITP 1527 0.8720 1527 -0.0222 1751 PCU 4 51-5 12/21/13 SITP 1445 0.8760 1 1445 1 0.0881 1649 2014 Production / Injection Wellname Date Test Type Pressure at MTD, psia Z Factor Datum Pressure, Psia Cum Gas, bcf P/Z, Psia PCU 451-5 01/01/14 SITP 1390 0.8704 1390 0.1266 1597 PCU 451-5 02/01/14 SITP 1405 0.8694 1405 0.1266 1616 PCU 4 51-5 03/01/14 SITP 1376 0.8712 1376 0.0812 1579 PCU 4 51-5 04/05/14 SITP 1437 0.8675 1437 0.1419 1656 PCU 4 51-5 05/01/14 SITP 1431 0.8679 1431 0.1419 1649 PCU 4 51-5 06/01/14 SITP 1431 0.8679 1431 0.1419 1649 PCU 4 51-5 07/01/14 SITP 1431 0.8679 1431 0.1419 1649 PCU 4 51-5 08/01/14 SITP 1434 0.8677 1434 0.1419 1653 PCU 4 51-5 09/01/14 SITP 1437 0.8675 1437 0.1419 1656 PCU 4 51-5 10/15/14 SITP 1379 0.8711 13790.0656 1583 PCU 4 51-5 11/01/14 SITP 1354 0.8726 1354 0.0377 1552 2/20/2018 Attachment #2 P/Z Data PCU 4 51-5 12/31/14 1SITP 1490 1 0.8645 1 1490 0.1925 1 1724 2015 Production ! Injection Wellname Date Test Type Pressure at MTD, psia Z Factor Datum Pressure, Psia Cum Gas, bcf P/Z, Psia PCU 4 51-5 01/01/15 SITP 1489 0.8645 1489 0.1925 1723 PCU 4 51-5 02/21/15 SITP 1451 0.8667 1451 0.2288 1674 PCU 4 51-5 03/01/15 SITP 1451 0.8667 1451 0.2288 1674 PCU 4 51-5 04/11/15 SITP 1456 0.8664 1456 1 0.2288 1681 PCU 4 51-5 05/11/15 SITP 1361 1 0.8722 1361 0.3506 1561 PCU 4 51-5 06/23/15 SITP 1437 0.8675 1437 0.2853 1657 PCU 4 51-5 07/29/15 SI TP 1425 0.8682 1425 0.2950 1642 PCU 4 51-5 08/16/15 SITP 1 1407 0.8693 1407 0.3196 1618 PCU 4 51-5 09/01/15 SITP 1415 0.8688 1415 0.3174 1629 PCU 4 51-5 12/08/15 ISITP 1300 0.8762 1300 0.4889 1483 PCU 4 51-5 12/22/15 ISITP 1336 0.8738 1336 0.4601 1529 2016 Production / Injection Wellname Date Test Type Pressure at MTD, psia Z Factor Datum Pressure, Psia Cum Gas, bcf P/Z, Psia PCU 4 51-5 05/13/15 SITP 1311 0.8665 1455 0.3464 1679 PCU 4 51-5 09/11/15 SITP 1302 0.8485 1423 0.2682 1677 PCU 4 51-5 11/23/15 SITP 1172 0.8594 1279 0.4513 1488 PCU 4 51-5 12/08/15 SITP 1193 0.8575 1302 0.4379 1518 PCU 4 51-5 12/22/15 SITP 1226 0.8547 13390.4091 0.0964 1567 PCU 4 51-5 05/24/16 SITP 1252 0.8526 1367 0.3838 1603 PCU 4 51-5 07/05/16 SITP 1410 0.8404 1542 0.1823 1835 PCU 4 51-5 08/30/16 SITP 1460 0.8370 1597 0.0237 1908 PCU 4 51-5 11/24/16 SITP 1431 0.8389 1566 0.0594 1867 PCU 4 51-5 12/31/16 SITP 1317 0.8473 1 1440 0.2370 1700 2017 Production / Injection Wellname Date Test Type Pressure at MTD, psia Z Factor Datum Pressure, Psia Cum Gas, bcf P/Z, Psia PCU 4 51-5 03/03/17 SITP 1311 0.8665 1455 0.2562 1679 PCU 4 51-5 07/14/17 SITP 1400 0.8610 1554 0.0840 1805 PCU 4 51-5 10/30/17 SITP 1400 0.8610 1554 0.0840 1805 PCU 4 51-5 12/28/17 SITP 1392 0.8615 1545 0.0929 1793 PCU 4 51-5 12/31/17 SITP 1387 0.8618 1539 0.0964 1786 2/20/2018 00 0 N O N N Y O r N CL Cl) Y C N F- 4 - Q