| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | K & E Petroleum | Oil & Gas Operator | Jan 1995 | |
| 2 | Kachina Oil Comp | Oil & Gas Operator | Jan 1988 | |
| 3 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 4 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 5 | Kansas Petroleum | Oil & Gas Operator | Dec 1993 | |
| 6 | Key Gas Corp. | Wichita, KS 67202 | Oil & Gas Operator | Nov 2018 |
| 7 | Kirkman W L Inco | Oil & Gas Operator | Dec 1994 | |
| 8 | KLM Operating | Oil & Gas Operator | Mar 2025 | |
| 9 | Kodiak Petroleum, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jun 2025 |
| 10 | Kytex, Inc. | Wichita, KS 67230 | Oil Operator | Dec 2019 |