| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | O'Ryan Oil And Gas | Odessa, TX 79768 | Oil & Gas Operator | Dec 2025 |
| 2 | Ocean Energy Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 3 | Okie Operating Company, LTD. | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2025 |
| 4 | Old Union Operating Company | Austin, TX 78716 | Oil & Gas Operator | Dec 2025 |
| 5 | Omega Energy Corp. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 6 | Omega Energy, LLC | Corpus Chrsti, TX 78418 | Oil & Gas Operator | Dec 2025 |
| 7 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |