| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ocean Energy Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 2 | Old Union Operating Company | Austin, TX 78716 | Oil & Gas Operator | Sep 2026 |
| 3 | Omni Oil & Gas, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Oct 2017 |
| 4 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 5 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Sep 2026 |