| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ocfiw Oil Company, Inc. | Hartington, NE 68739 | Oil & Gas Operator | Dec 2009 |
| 2 | Oil Partners, LLC | Salina, KS 67401 | Oil Operator | Dec 2023 |
| 3 | Okmar Oil Compan | Oil & Gas Operator | Feb 1995 | |
| 4 | Olympic Oil, Inc. | Hutchinson, KS 67502 | Oil & Gas Operator | Dec 2023 |
| 5 | Orca Operating Company LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2024 |