| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Kaiser Oil (U.S.) LTD. | Oil & Gas Operator | Apr 1983 | |
| 2 | Kash Oil And Gas, Inc | Oil & Gas Operator | Oct 2020 | |
| 3 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 4 | Kerr-McGee Oil & Gas Onshr LLC | Oil & Gas Operator | Dec 2005 | |
| 5 | Kerr-McGee Rocky Mountain Corp | Denver, CO 80202 | Oil & Gas Operator | Jan 2007 |
| 6 | Key Operating Co., Inc. | Duncan, OK 73534-1284 | Oil & Gas Operator | Jan 2025 |
| 7 | Kinder Gas Inc | Oil Operator | Dec 2011 | |
| 8 | Knight Exploration, Inc. | Oil & Gas Operator | Sep 1989 | |
| 9 | Koch Gateway Pipeline Company | Oil & Gas Operator | Feb 2001 |