| 1601 | Exoro Energy, L.L.C. | | Oil & Gas Operator | Jun 2021 |
| 1602 | Expando Production Co. | | Oil & Gas Operator | Oct 1988 |
| 1603 | Expert Oil & Gas, L.L.C. | | Oil & Gas Operator | Nov 2024 |
| 1604 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 1605 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Feb 2026 |
| 1606 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |
| 1607 | F & F Drilling Company | | Oil Operator | Apr 1991 |
| 1608 | F & H Production | | Oil & Gas Operator | Apr 2014 |
| 1609 | F H Walsh Jr Operating Co Inc | | Oil & Gas Operator | Jul 1995 |
| 1610 | F Howard Walsh Jr | | Oil & Gas Operator | Aug 1992 |
| 1611 | F R Etchen, Jr | | Oil & Gas Operator | Sep 1985 |
| 1612 | F W Rabalais, Inc. | | Oil & Gas Operator | Dec 2014 |
| 1613 | F. E. Hargraves | | Oil Operator | Mar 1983 |
| 1614 | F.A.S. Environmental Services, L.L.C. | | Oil Operator | Jan 2025 |
| 1615 | F.E.Hargraves &Sons DRL.Co.Inc. | | Oil & Gas Operator | Mar 1992 |
| 1616 | F.S.M. Oil Co. | | Oil Operator | Aug 1979 |
| 1617 | Fair Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 2000 |
| 1618 | Fair Oil, LC | Tyler, TX 75710 | Oil & Gas Operator | Oct 2001 |
| 1619 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Feb 2026 |
| 1620 | Fairfield Energy Corp. | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |
| 1621 | Fairview Producing Corp. | | Oil Operator | Jul 2001 |
| 1622 | Fairway Resources Operating, LLC | Southlake, TX 76092 | Oil & Gas Operator | Aug 2022 |
| 1623 | Faith Energy, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 1624 | Faith Oil Of Hosston | | Oil Operator | Feb 1996 |
| 1625 | Falco S & D, Inc. | Shreveport, LA 71107 | Oil & Gas Operator | Apr 1998 |
| 1626 | Falcon Bay Operations, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2007 |
| 1627 | Falcon Oil & Gas Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2022 |
| 1628 | Famcor Oil, Inc. | Scottsdale, AZ 85260 | Oil & Gas Operator | Sep 2020 |
| 1629 | Family Oil Company | | Oil Operator | Jan 2025 |
| 1630 | Fantasy Oil & Gas Ventures, L.L.C. | | Oil Operator | Dec 2024 |
| 1631 | Fantome, LLC | | Oil Operator | Jan 2007 |
| 1632 | Far West Development, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2026 |
| 1633 | Fas Services, Inc. | | Oil Operator | Apr 2005 |
| 1634 | Faul Energy, Inc. | | Oil & Gas Operator | Oct 1988 |
| 1635 | Fay A. Williams | | Oil & Gas Operator | Dec 2024 |
| 1636 | Fear & Duncan | | Oil Operator | Jul 1979 |
| 1637 | Feazel Operating Company, Inc. | | Oil & Gas Operator | Feb 1979 |
| 1638 | Fee Energy Corporation | | Oil & Gas Operator | Jul 1978 |
| 1639 | Feldco, Inc. | | Oil & Gas Operator | Apr 2007 |
| 1640 | Felmont Oil Corporation | Walnut Creek, CA 94596-3568 | Oil & Gas Operator | Feb 1990 |
| 1641 | Ferguson Oil Company Inc | | Oil & Gas Operator | Apr 1994 |
| 1642 | Fernwood Corporation | | Oil Operator | Dec 1986 |
| 1643 | Ferry Lake Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 1644 | Fi-Ro Corporation | Natchez, MS BADADDR | Oil & Gas Operator | Nov 2001 |
| 1645 | Field Petroleum Corp. | San Antonio, TX 78216 | Oil & Gas Operator | Feb 2026 |
| 1646 | Fieldwood Energy LLC | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
| 1647 | Fieldwood Energy Offshore LLC | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 1648 | Fieldwood Onshore LLC | Houston, TX 77098 | Oil & Gas Operator | Feb 2026 |
| 1649 | Fife Oil & Gas | | Oil Operator | Oct 1987 |
| 1650 | Fife Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
| 1651 | Fife Oil Company, Inc. | | Oil & Gas Operator | Feb 2008 |
| 1652 | Fifty Third Corp. & K.M.O.C. | | Gas Operator | Jul 1994 |
| 1653 | Fifty-Third Corporation | | Gas Operator | Jul 1994 |
| 1654 | Fin-Oil, Inc. | | Oil & Gas Operator | Apr 1985 |
| 1655 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 1656 | Fina Oil& Chem Co/Marathon Oil | | Oil & Gas Operator | Dec 1992 |
| 1657 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Feb 2026 |
| 1658 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Feb 2026 |
| 1659 | Fireside Oil And Gas, Inc. | West Monroe, LA 71294 | Oil & Gas Operator | Feb 2002 |
| 1660 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
| 1661 | First Energy Development Corp. | | Oil & Gas Operator | Sep 2008 |
| 1662 | Firstrike Energy Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Jan 2025 |
| 1663 | Fisher Joint Venture | | Oil & Gas Operator | Oct 1998 |
| 1664 | Fite Oil & Gas, Inc. | Shreveport, LA 71163 | Oil & Gas Operator | Feb 2026 |
| 1665 | Fitzgerald Production Co. | Oil City, LA 71061 | Oil & Gas Operator | Dec 2024 |
| 1666 | Five States Energy Company | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 1667 | Five States Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Feb 2008 |
| 1668 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Feb 2026 |
| 1669 | Flash Gas & Oil Northeast, Inc | | Oil & Gas Operator | May 2007 |
| 1670 | Flash Gas & Oil Southwest, Inc. | Mandeville, LA 70470 | Oil & Gas Operator | Oct 2019 |
| 1671 | Flash Gas & Oil, Inc. | | Oil & Gas Operator | May 1991 |
| 1672 | Flatwater Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 1673 | Fletcher Operating Co. | | Oil & Gas Operator | May 1989 |
| 1674 | Flex Energy, L.L.C. | | Oil & Gas Operator | Feb 2010 |
| 1675 | Flora B Shinnick | | Oil Operator | Jan 2025 |
| 1676 | Flores & Rucks, Inc. | | Oil & Gas Operator | Jun 1997 |
| 1677 | Florida Exploration Co | Aurora, CO 80014 | Oil & Gas Operator | Sep 1989 |
| 1678 | Florida Gas Transmission Co. | | Oil Operator | Dec 2007 |
| 1679 | Flourison Oil & Gas, LLC | | Oil Operator | Jan 2025 |
| 1680 | Floyd Oil Company | Houston, TX 77002 | Oil & Gas Operator | Nov 1999 |
| 1681 | Floyd Ray Porter | | Oil & Gas Operator | Nov 1986 |
| 1682 | Floyd Williams | | Oil Operator | Aug 1988 |
| 1683 | Flynn Energy Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Mar 1993 |
| 1684 | FMP Operating Company, LTD PTN | | Oil & Gas Operator | Mar 1990 |
| 1685 | Fne Operating LLC | | Oil Operator | Dec 2024 |
| 1686 | Focus Energy, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2019 |
| 1687 | Fod Oil Company | | Oil Operator | May 1999 |
| 1688 | Fontainebleau Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 1689 | Fontenot Pet Land Services, Inc. | | Oil & Gas Operator | Aug 2002 |
| 1690 | Forcenergy Gas Exploration Inc. | Miami, FL 33129 | Oil & Gas Operator | Aug 1996 |
| 1691 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
| 1692 | Fordoche Operating Company, LLC | | Oil & Gas Operator | Nov 2024 |
| 1693 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 1694 | Forexco, Inc. | Greensboro, NC 27438 | Oil & Gas Operator | Dec 2020 |
| 1695 | Forman Exploration Company | | Oil & Gas Operator | Oct 1988 |
| 1696 | Forman Petroleum Corporation | | Oil & Gas Operator | Aug 2001 |
| 1697 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | Feb 2026 |
| 1698 | Forrest Exploration & Dev, LLC | | Gas Operator | May 2003 |
| 1699 | Fort Apache Energy, Inc. | Boerne, TX 78015 | Oil & Gas Operator | Feb 2026 |
| 1700 | Fortenberry Operating Co., Inc | | Oil & Gas Operator | Nov 2003 |