| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | K R M Petroleum | Oil & Gas Operator | Jan 1990 | |
| 2 | Kaiser-Francis O | Oil & Gas Operator | Oct 1995 | |
| 3 | Kanaco Oil Company | Oil Operator | Apr 2025 | |
| 4 | Kato Operating C | Oil Operator | Aug 1988 | |
| 5 | Kelso Casing Pul | Oil Operator | Mar 1995 | |
| 6 | Kenbill Oil Comp | Oil Operator | Jun 1994 | |
| 7 | Kimbark Oil & Ga | Oil & Gas Operator | Aug 1992 | |
| 8 | Kiwanda Resc Inc | Oil & Gas Operator | Aug 1993 | |
| 9 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 10 | Koch Exploration | Oil & Gas Operator | Oct 1988 | |
| 11 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |
| 12 | Kracken Operating LLC | Lawrence, KS 66047 | Oil Operator | Dec 2019 |
| 13 | Kruckenberg & SC | Oil & Gas Operator | Sep 1993 | |
| 14 | Ky Oil Co | Palco, KS 67657 | Oil & Gas Operator | Aug 2000 |