| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Dec 2024 |
| 2 | Oil Property Man | Oil & Gas Operator | Jun 1995 | |
| 3 | Oil Property Management, Inc. | Attica, KS 67009 | Oil & Gas Operator | Feb 2021 |
| 4 | Okmar Oil Compan | Oil & Gas Operator | Feb 1995 | |
| 5 | Okmar Oil Company | Marietta, OH 45750 | Oil & Gas Operator | Jun 2005 |
| 6 | Onshore, L.L.C. | Wichita, KS 67205 | Oil & Gas Operator | Dec 2009 |
| 7 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |