| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 2 | Seeley Oil Company, LLC | Cortez, CO 81321 | Oil & Gas Operator | Feb 2024 |
| 3 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
| 4 | Skelly Oil Co | Oil & Gas Operator | Mar 2005 | |
| 5 | Skyline Oil Company | Salt Lake City, UT 84111 | Oil & Gas Operator | Jan 1987 |
| 6 | Stone Energy Corporation | Denver, CO 80202-2828 | Oil & Gas Operator | Oct 2014 |
| 7 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 8 | Superior Oil Co. | Denver, CO 80217-5444 | Oil & Gas Operator | Feb 2001 |
| 9 | Swepi/Western Division | Houston, TX 77210 | Oil & Gas Operator | Aug 1984 |