| 1 | Fieldwood Onshore LLC | Houston, TX 77098 | Oil & Gas Operator | Nov 2024 |
| 2 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 3 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Nov 2024 |
| 4 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Nov 2024 |
| 5 | Flash Gas & Oil Northeast, Inc | | Oil & Gas Operator | May 2007 |
| 6 | Flash Gas & Oil Southwest, Inc. | Mandeville, LA 70470 | Oil & Gas Operator | Oct 2019 |
| 7 | Florida Exploration Co | Aurora, CO 80014 | Oil & Gas Operator | Sep 1989 |
| 8 | Floyd Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1999 |
| 9 | Flynn Energy Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Mar 1993 |
| 10 | FMP Operating Co., LTD. PTN. | | Oil & Gas Operator | Mar 1990 |
| 11 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 12 | Forman Exploration Company | | Oil & Gas Operator | Oct 1988 |
| 13 | Forman Petroleum Corporation | | Oil & Gas Operator | Aug 2001 |
| 14 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2024 |
| 15 | Foster-Brown Operations, Inc. | | Oil & Gas Operator | Apr 2003 |
| 16 | Franks Petroleum Inc. | | Oil & Gas Operator | Nov 1994 |
| 17 | Fredonia Resources Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2003 |
| 18 | Future Oil & Gas, Inc. | | Oil & Gas Operator | Mar 2010 |