| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Kaiser-Francis O | Oil & Gas Operator | Oct 1995 | |
| 2 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 3 | Kennedy & Mitche | Oil & Gas Operator | May 1990 | |
| 4 | Kimbark Oil & Ga | Oil & Gas Operator | Aug 1992 | |
| 5 | Kimbark Oil & Gas Company | Denver, CO 80203 | Oil & Gas Operator | May 2007 |
| 6 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2025 |