| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 2 | Kash Oil And Gas, Inc | Oil & Gas Operator | Oct 2020 | |
| 3 | KCS Resources LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 4 | Kedco Management Corp | Oil & Gas Operator | Jul 1985 | |
| 5 | Key Operating Co., Inc. | Duncan, OK 73534-1284 | Oil & Gas Operator | Jan 2025 |
| 6 | Keystone Exploration, Inc | College Sta, TX 77845 | Oil & Gas Operator | Oct 2025 |
| 7 | Kilroy Co. Of Texas, Inc. | Oil & Gas Operator | Jun 1991 | |
| 8 | Koch Gateway Pipeline Company | Oil & Gas Operator | Feb 2001 | |
| 9 | KV Oil & Gas, Inc. | Oil & Gas Operator | Dec 2006 |