| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | K & D Oil Compan | Oil Operator | Apr 1994 | |
| 2 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Jun 2025 |
| 3 | K.J.S. Oil | Oil & Gas Operator | Jun 2025 | |
| 4 | Kaiser-Francis O | Oil & Gas Operator | Oct 1995 | |
| 5 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 6 | Krier Kirby Oil | Oil Operator | Dec 1996 | |
| 7 | Krier Oil Operation | Oil Operator | May 2025 | |
| 8 | Kruckenberg & SC | Oil & Gas Operator | Sep 1993 | |
| 9 | Kytex, Inc. | Wichita, KS 67230 | Oil Operator | Dec 2019 |