| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Kaneb Operg Co. LTD. PTN. | Oil & Gas Operator | Aug 1988 | |
| 2 | Karbuhn Oil Company | Tomball, TX 77375 | Oil & Gas Operator | Dec 2025 |
| 3 | Kash Oil And Gas, Inc | Oil & Gas Operator | Oct 2020 | |
| 4 | Kepco Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 5 | Kestrel Resources, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Sep 2015 |
| 6 | Key Operating Company Inc | Duncan, OK 73534-1284 | Oil & Gas Operator | Jan 2025 |
| 7 | King Resources Co. | Oil & Gas Operator | Dec 1977 | |
| 8 | Kykon Oil & Gas, Inc. | Billings, MT 59103 | Oil & Gas Operator | Jun 2007 |