| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | O'Blue Corp. | Kerrville, TX 78028 | Oil & Gas Operator | Mar 1998 |
| 2 | Oakridge Oil And Gas, LP | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 3 | Omimex Petroleum Inc | Fort Worth, TX 76120 | Oil & Gas Operator | Aug 2022 |
| 4 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 5 | Owl Creek Operating Co., Inc. | Denver, CO 80206 | Oil & Gas Operator | Oct 2025 |
| 6 | Owl Creek Production Co., Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2006 |