| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Oct 2025 |
| 2 | Okmar Oil Compan | Oil & Gas Operator | Feb 1995 | |
| 3 | Opco LLC | Chase, KS 67524 | Oil Operator | Dec 2019 |
| 4 | Oryx Energy Comp | Oil & Gas Operator | Apr 1991 | |
| 5 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |