| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ocean Energy Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2023 |
| 2 | Oil Producers In | Oil & Gas Operator | Dec 1996 | |
| 3 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Apr 2024 |
| 4 | Oolite Energy Corp | Amarillo, TX 79105 | Oil & Gas Operator | Apr 2022 |
| 5 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Apr 2024 |