| 901 | Furry Operating Account | Brownwood, TX 76804 | Oil & Gas Operator | Aug 2003 |
| 902 | Furry Producing Company | Brownwood, TX 76801 | Oil & Gas Operator | May 2026 |
| 903 | Furry, Myrl M. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2003 |
| 904 | Further Developm | | Oil Operator | Apr 1986 |
| 905 | Fuse Energy, LLC | Alvord, TX 76225 | Oil & Gas Operator | Jan 2019 |
| 906 | Fusion Energy Holdings, LLC | Throckmorton, TX 76483 | Oil Operator | May 2026 |
| 907 | Fusion XP, Inc. | Arlington, TX 76006 | Oil Operator | Apr 2014 |
| 908 | Future Energy Corp | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1991 |
| 909 | Future Energy Li | | Oil Operator | Nov 1991 |
| 910 | Future Energy Partners | Bartlesville, OK 74005 | Oil & Gas Operator | Feb 2017 |
| 911 | Future Oil & Gas, Inc. | | Oil & Gas Operator | Mar 2010 |
| 912 | Future Petroleum Company LLC | Houston, TX 77027 | Oil & Gas Operator | Jun 2013 |
| 913 | Future Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 1999 |
| 914 | Future Production Inc | Canton, OH 44708 | Oil & Gas Operator | Dec 2023 |
| 915 | FW Eagle Ford I, LLC | Houston, TX 77084 | Oil & Gas Operator | May 2026 |
| 916 | FW Midcon I, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2026 |
| 917 | FWB Petroleum, Inc. | Euless, TX 76040 | Oil & Gas Operator | Dec 2000 |
| 918 | FWF Exploration Inc | | Oil Operator | Oct 1994 |
| 919 | FX Drilling Company, Inc. | Cut Bank, MT 59427 | Oil & Gas Operator | Feb 2026 |
| 920 | FX Energy Operating, LLC | Canadian, TX 79014 | Oil & Gas Operator | May 2026 |
| 921 | Fyler Oil, LLC | McPherson, KS 67460 | Oil Operator | Jan 2026 |
| 922 | Fyler, M. A. | Rangley, CO 81648 | Oil Operator | Mar 1988 |