| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | K & E Drilling I | Oil & Gas Operator | Sep 1995 | |
| 2 | K & L Tank Truck | Oil Operator | Aug 1987 | |
| 3 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Jun 2025 |
| 4 | K R M Petroleum | Oil & Gas Operator | Jan 1990 | |
| 5 | Kaiser-Francis O | Oil & Gas Operator | Oct 1995 | |
| 6 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 7 | Kennedy & Mitche | Oil & Gas Operator | May 1990 | |
| 8 | Key Gas Corp. | Wichita, KS 67202 | Oil & Gas Operator | Nov 2018 |
| 9 | King Daniel L | Oil Operator | May 1994 | |
| 10 | Kiwanda Energy, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jan 2008 |