| 1501 | Hughes & Patterson Oper. Corp. | Albany, TX 76430 | Oil & Gas Operator | Sep 2026 |
| 1502 | Hughes & Shawver | Olney, TX 76374 | Oil & Gas Operator | Aug 1996 |
| 1503 | Hughes Denny Offshore Expl Inc | | Oil & Gas Operator | Nov 1988 |
| 1504 | Hughes Drilling Co Inc | Enid, OK 73702 | Oil & Gas Operator | Apr 1998 |
| 1505 | Hughes Drilling Co, A General Partnership | Wellsville, KS 66092 | Oil Operator | May 2026 |
| 1506 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Jun 2026 |
| 1507 | Hughes Eastern Petroleum, Inc. | | Oil & Gas Operator | Apr 1993 |
| 1508 | Hughes Eastern Petroleum, LTD | | Oil & Gas Operator | Jun 1986 |
| 1509 | Hughes Gas Systems LLC | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Jun 2026 |
| 1510 | Hughes George B | Asher, OK 74826-0165 | Oil & Gas Operator | Mar 2011 |
| 1511 | Hughes Legacy LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2022 |
| 1512 | Hughes Oil Company Inc | Odessa, TX 79765 | Oil & Gas Operator | Feb 2004 |
| 1513 | Hughes Oil Operating, LLC | Spring, TX 77387 | Oil & Gas Operator | Sep 2026 |
| 1514 | Hughes Petroleum Corp. | | Oil Operator | Dec 1972 |
| 1515 | Hughes River Oil & Gas Company | | Oil & Gas Operator | Dec 2021 |
| 1516 | Hughes Services, LLC | Wellsville, KS 66092 | Oil Operator | May 2026 |
| 1517 | Hughes Supplies, Inc. | Greenwood, LA 71033 | Oil & Gas Operator | Jul 2019 |
| 1518 | Hughes, Bill Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 1519 | Hughes, Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Jul 2011 |
| 1520 | Hughes, Dan A. Company | Beeville, TX 78104 | Oil & Gas Operator | May 2006 |
| 1521 | Hughes, Dan A. Company, L.P. | Beeville, TX 78104 | Oil & Gas Operator | Sep 2026 |
| 1522 | Hughes, Wise & Assoc., Inc | | Oil Operator | Jul 1987 |
| 1523 | Hughes-Denny Petroleum Co.,Inc | | Oil & Gas Operator | Dec 1987 |
| 1524 | Hughes-Leckelt-Maybrier PRDCRS | | Oil Operator | Mar 2022 |
| 1525 | Hughes-Nicklaus Oil Co., LTD. | | Oil & Gas Operator | Feb 1986 |
| 1526 | Hughey, Gaylord T. SR. Oper. Co. | Tyler, TX 75711 | Oil & Gas Operator | Feb 1998 |
| 1527 | Hughey, W. R., Operating Co. | Tyler, TX 75711 | Oil & Gas Operator | Feb 2005 |
| 1528 | Hugoton Energy C | | Oil & Gas Operator | Feb 2004 |
| 1529 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 1530 | Hugoton Operating Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 1531 | Hugus Investment Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Sep 2026 |
| 1532 | Huitt Joe A | Tulsa, OK 74103 | Oil & Gas Operator | May 2001 |
| 1533 | Huitt Joe A Rev Trust | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2009 |
| 1534 | Hulen Operating Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Sep 2026 |
| 1535 | Hull Enterprises Inc | Broken Arrow, OK 74012 | Oil & Gas Operator | Sep 2023 |
| 1536 | Hull Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2021 |
| 1537 | Hull Oil, LLC | Columbia, MO 65202 | Oil Operator | Apr 2026 |
| 1538 | Hulse Steve & Frank | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2000 |
| 1539 | Hulse, J. T. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2026 |
| 1540 | Hulse, Tommy P. | Archer City, TX 76351 | Oil & Gas Operator | Feb 2009 |
| 1541 | Hulsey Larry O & Co | Graham, TX 76046 | Oil & Gas Operator | Jun 2012 |
| 1542 | Hulsey Oil Company | Dallas, TX 75205 | Oil & Gas Operator | Aug 1999 |
| 1543 | Humak Processors, Inc. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2005 |
| 1544 | Humber Oil Company | Albany, TX 76430 | Oil & Gas Operator | Sep 2026 |
| 1545 | Humble Oil & Refining Co. | Houston, TX 77252 | Oil & Gas Operator | Jan 2000 |
| 1546 | Humerickhouse Oil, LLC | Ottawa, KS 66067 | Oil Operator | May 2026 |
| 1547 | Humerickhouse, Donald L. | Ottawa, KS 66067 | Oil Operator | Dec 2009 |
| 1548 | Hummingbird Oil, LLC | Sedan, KS 67361 | Oil Operator | May 2026 |
| 1549 | Hummon Corp | Medicine Lodge, KS 67104 | Oil & Gas Operator | May 2026 |
| 1550 | Humphrey Mark | Morris, OK 74445-2816 | Oil & Gas Operator | Sep 2021 |
| 1551 | Humphrey, Thos.D. Oil Prop.,Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Aug 1999 |
| 1552 | Humphrey-Bashford Oil, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2010 |
| 1553 | Hungerford Oil & Gas Inc | Helena, OK 73741 | Oil & Gas Operator | Nov 2000 |
| 1554 | Hungerford Oil Partners | Williamsville, NY 14221 | Oil Operator | Dec 2025 |
| 1555 | Hunt Brothers Producing Co Inc | Redding, CA 96049-2516 | Oil & Gas Operator | Sep 2012 |
| 1556 | Hunt Chris Water Hauling Contractor Inc | Keyes, OK 73947-0004 | Oil Operator | Jun 2008 |
| 1557 | Hunt Cimarron Limited Partnership | Roswell, NM 88202 | Oil & Gas Operator | Jul 2026 |
| 1558 | Hunt Cimarron LTD. Partnership | Roswell, NM 88202 | Oil & Gas Operator | Sep 2026 |
| 1559 | Hunt Energy Corporation | | Oil & Gas Operator | Feb 2002 |
| 1560 | Hunt Engineering Inc | Norman, OK 73069-4093 | Oil & Gas Operator | Feb 2019 |
| 1561 | Hunt Enterprises | | Oil & Gas Operator | Jun 2026 |
| 1562 | Hunt H L | Dallas, TX 75202-2785 | Oil & Gas Operator | Jan 2025 |
| 1563 | Hunt Industries, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2000 |
| 1564 | Hunt Investment Corporation | | Oil & Gas Operator | Jun 1989 |
| 1565 | Hunt Marcellus Opr Co LLC | Wilcox, PA 15870 | Oil & Gas Operator | Jan 2019 |
| 1566 | Hunt Oil Co., Et Al | | Oil & Gas Operator | Nov 1992 |
| 1567 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 1568 | Hunt Oil, LLC | Garnett, KS 66032 | Oil Operator | Nov 2025 |
| 1569 | Hunt Operating, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2026 |
| 1570 | Hunt Petroleum (Aec), Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 1571 | Hunt Petroleum Corp. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 1572 | Hunt Petroleum, Inc. | Houston, TX 772511350 | Oil & Gas Operator | Nov 2002 |
| 1573 | Hunt, Hassie Exploration Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 1574 | Hunt, Judith R. | Findley Lake, NY 14736 | Gas Operator | Dec 2025 |
| 1575 | Hunt, WM. Herbert, Trust Est. | Dallas, TX 75201 | Oil & Gas Operator | Sep 1998 |
| 1576 | Hunter & Hedrick Production, Inc | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Dec 1995 |
| 1577 | Hunter & McDonald | Wichita Falls, TX 76309 | Oil & Gas Operator | Jul 2001 |
| 1578 | Hunter Brothers | Wichita Falls, TX 76302 | Oil & Gas Operator | Jul 2007 |
| 1579 | Hunter Edison Oil Development LLC | | Oil & Gas Operator | Jul 2026 |
| 1580 | Hunter Energy, Inc. | Hurst, TX 76053 | Oil & Gas Operator | Sep 2026 |
| 1581 | Hunter Oil & Gas Co. | Bangs, TX 76823 | Oil & Gas Operator | Sep 2026 |
| 1582 | Hunter Oil & Gas, LLC | | Oil & Gas Operator | Oct 2001 |
| 1583 | Hunter Oil Corporation | Gruver, TX 79040 | Oil & Gas Operator | Sep 2026 |
| 1584 | Hunter Petroleum Inc. | Alice, TX 78333 | Oil & Gas Operator | May 2014 |
| 1585 | Hunter, Rocquelle | Coleman, TX 76834 | Oil Operator | Sep 2026 |
| 1586 | Hunters Creek Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Sep 2026 |
| 1587 | Huntford Resources Corp | Englewood, CO 80112 | Oil & Gas Operator | Nov 2001 |
| 1588 | Huntington Beach Company | | Oil & Gas Operator | Dec 1998 |
| 1589 | Huntington Beach Pacific Coast Enterprises LLC | | Oil & Gas Operator | Jan 2018 |
| 1590 | Huntington Energy LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Sep 2026 |
| 1591 | Huntington Midway Incorporated | Huntington, WV 25709 | Oil & Gas Operator | Dec 2021 |
| 1592 | Huntington Resources, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2006 |
| 1593 | Huntington Signal Oil Company | | Oil & Gas Operator | Dec 1997 |
| 1594 | Huntland Properties, LTD. | Santa Anna, TX 76878 | Oil & Gas Operator | Sep 2026 |
| 1595 | Huntley & Huntley Inc | Monroeville, PA 15146-2302 | Oil & Gas Operator | Dec 2019 |
| 1596 | Huntlyn Operating, LLC | | Oil & Gas Operator | Sep 2022 |
| 1597 | Hunton Oil & Gas Corporation | Oklahoma City, OK 73154-0191 | Oil & Gas Operator | May 2019 |
| 1598 | Hunton Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2026 |
| 1599 | Huntwood Resources, LLC | Huntsville, TX 77340 | Oil Operator | Sep 2026 |
| 1600 | Hupfer Oil & Gas | Hays, KS 67601 | Oil & Gas Operator | Dec 1993 |