| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Okreek Oil Company | Weatherford, TX 76086 | Oil & Gas Operator | Apr 2026 |
| 2 | Oleum Partners, LLC | Frisco, TX 75034 | Oil & Gas Operator | Apr 2026 |
| 3 | Omega Energy Corp. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 4 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 5 | Owl Creek Production Co., Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2006 |
| 6 | Oxxn | Weatherford, TX 76086 | Oil & Gas Operator | Oct 2023 |
| 7 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |