| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Katy Drilling Corporation | Tulsa, OK 74146-3717 | Oil & Gas Operator | Apr 2020 |
| 2 | Kelly Oil | Tulsa, OK 74105 | Oil Operator | Dec 2000 |
| 3 | Kenneth W Cory LTD | Bellaire, TX 77401 | Oil & Gas Operator | Jul 2025 |
| 4 | King & Kelly | Tulsa, OK 74103 | Oil Operator | Aug 1993 |
| 5 | Kiska Oil Company | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2019 |
| 6 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Aug 2025 |
| 7 | KMV Consulting Inc | Winston Salem, NC 27101-2561 | Gas Operator | Dec 2012 |
| 8 | Koch Oil Company | Oil & Gas Operator | May 2017 |