| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | F & J Oil LLC | Newcastle, WY 82701 | Oil & Gas Operator | Oct 2015 |
| 2 | Farnsworth & Kaiser Oil Company | Newcastle, WY 82701 | Oil & Gas Operator | Sep 2012 |
| 3 | FDF Resources | Newcastle, WY 82701 | Oil & Gas Operator | Aug 2025 |
| 4 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 5 | Flying J Oil & Gas Inc | North Salt Lake, UT 84054 | Oil & Gas Operator | Dec 2009 |
| 6 | Fuel Resources Development Co | Denver, CO 80202 | Oil & Gas Operator | Feb 1994 |