| 1601 | Hupfer Operating, Inc. | Shawnee, KS 66203 | Oil & Gas Operator | Dec 2019 |
| 1602 | Hurd Ent.LTD/U.S.Enercorp,LLC | San Antonio, TX 78209 | Oil & Gas Operator | Aug 2002 |
| 1603 | Hurd Enterprises, LTD. | San Antonio, TX 78209 | Oil & Gas Operator | Aug 2026 |
| 1604 | Hurd Oil Company | | Oil & Gas Operator | Jun 2015 |
| 1605 | Hurley Charles B | Santa Ana, CA 92706 | Oil & Gas Operator | Apr 2015 |
| 1606 | Hurley Oil And Gas Company | | Oil & Gas Operator | Jan 1997 |
| 1607 | Hurley Oil Company | | Oil Operator | Dec 1988 |
| 1608 | Hurley Petroleum Corporation | Baton Rouge, LA 70821 | Oil & Gas Operator | Feb 2000 |
| 1609 | Hurricane Energy Corporation | | Oil & Gas Operator | Dec 2000 |
| 1610 | Hurricane Iron & Steel, Inc. | | Oil Operator | Dec 1993 |
| 1611 | Hurricane Oil And Gas Co., Inc. | Houston, TX 77057 | Oil & Gas Operator | Mar 2008 |
| 1612 | Hurst Oil & Gas, Inc. | Hillsboro, TX 76645 | Oil & Gas Operator | Dec 2024 |
| 1613 | Hurst Oil Investments Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Feb 2015 |
| 1614 | Hurt, W C & C E | | Oil Operator | Dec 2006 |
| 1615 | Husain, Mrs. Shahnaz | Tulsa, OK 74136 | Oil Operator | Nov 1996 |
| 1616 | Huseman Oil International Inc | | Oil & Gas Operator | Feb 1992 |
| 1617 | Husfeld, Rose Marie | Bowie, TX 76230 | Oil & Gas Operator | Aug 2017 |
| 1618 | Husfeld, Walter H. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2007 |
| 1619 | Husky Oil Company | Cody, WY 82414 | Oil & Gas Operator | Dec 1984 |
| 1620 | Husky Petroleum | Seminole, OK 74818-1181 | Oil Operator | Feb 2012 |
| 1621 | Husky Ventures Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2026 |
| 1622 | Huson Corp. | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 1623 | Huston Minerals LP | Albany, TX 76430 | Oil & Gas Operator | Aug 2026 |
| 1624 | Huston Oil | Woodson, TX 76491 | Oil & Gas Operator | Oct 2010 |
| 1625 | Hutchinson Oil C | | Oil & Gas Operator | May 1995 |
| 1626 | Hutchinson Oil Co. | | Oil & Gas Operator | Apr 2026 |
| 1627 | Hutchison Jay Oi | | Oil Operator | Sep 1991 |
| 1628 | Hutson Oil Co. | | Oil & Gas Operator | Nov 2024 |
| 1629 | Hutton Charles N | | Oil Operator | Dec 1994 |
| 1630 | Hutton Gas Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 1631 | Hutton, Charles N., SR. | Iola, KS 66749 | Oil Operator | Nov 2007 |
| 1632 | Hux Oil Company LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Apr 2026 |
| 1633 | Hvi Cat Canyon Inc. | | Oil & Gas Operator | Dec 2025 |
| 1634 | HW Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Aug 2026 |
| 1635 | HWH Production, LLC | Muenster, TX 76252 | Oil Operator | Aug 2026 |
| 1636 | Hy-Mark Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
| 1637 | Hy-Tech, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2017 |
| 1638 | Hyalite Energy Corporation | Pampa, TX 79066 | Oil & Gas Operator | Apr 2026 |
| 1639 | Hyatt Exploration, Inc. | | Oil Operator | Jul 1995 |
| 1640 | Hybrid Operating, Incorporated | Carlsbad, CA 92009 | Oil & Gas Operator | Aug 2026 |
| 1641 | Hyco Oil Inc | Newcastle, WY 82701 | Oil & Gas Operator | Dec 2006 |
| 1642 | Hyde-Marrs, Inc. | Wichita, KS 67202 | Oil Operator | Aug 1997 |
| 1643 | Hyder, Dean L. | Akron, NY 14001 | Gas Operator | Dec 2025 |
| 1644 | Hydroc Oil Company | Borger, TX 79007 | Oil & Gas Operator | May 2012 |
| 1645 | Hydrocarbon Exploration, Inc. | | Oil & Gas Operator | Dec 2008 |
| 1646 | Hydrocarbon Generation, Inc. | Allegany, NY 14706 | Oil & Gas Operator | Dec 2025 |
| 1647 | Hydrocarbon Horizons, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jun 2023 |
| 1648 | Hydrocarbon Inv, Inc | | Oil Operator | Dec 2018 |
| 1649 | Hydrocarbon Lease Management LTD | Addison, TX 75001 | Oil & Gas Operator | Jul 2002 |
| 1650 | Hydrocarbon Management, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 1996 |
| 1651 | Hydrocarbon MGMT., Inc. | | Oil & Gas Operator | Mar 1997 |
| 1652 | Hydrocarbon Operating, Inc. | Corpus Christ, TX 78401 | Oil & Gas Operator | Aug 2026 |
| 1653 | Hydrocarbon Resources LTD | Medina, OH 44256 | Oil & Gas Operator | Dec 2022 |
| 1654 | Hydrocarbon Technology Services | | Oil & Gas Operator | Dec 2000 |
| 1655 | Hydrofusion Energy, LLC | Cuero, TX 77954 | Oil Operator | Aug 2026 |
| 1656 | Hydrogeo, L.L.C. | Houston, TX 77074 | Oil & Gas Operator | Aug 2026 |
| 1657 | Hyer,Na & CJ Aldenhoven Trusts | Lipan, TX 76462 | Gas Operator | Oct 2017 |
| 1658 | Hyland Oil Corporation | | Oil & Gas Operator | Apr 1990 |
| 1659 | Hyman Muslow | | Oil Operator | Jun 1995 |
| 1660 | Hyndrex Resources | | Oil & Gas Operator | Feb 2016 |
| 1661 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 1662 | Hyperion Oil & Gas LLC | Dallas, TX 75251 | Oil & Gas Operator | Jun 2026 |
| 1663 | Hyquest Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2015 |