| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Kaiser-Francis O | Oil & Gas Operator | Oct 1995 | |
| 2 | Kansas Natural Gas Operating, LC | Hays, KS 67601 | Gas Operator | Jun 2025 |
| 3 | Kansas Natural Gas, Inc. | Hays, KS 67601 | Gas Operator | Jun 2025 |
| 4 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 5 | Kimbark Oil & Ga | Oil & Gas Operator | Aug 1992 |