| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 601 | CWB Energy Inc | Oklahoma City, OK 73139-8837 | Oil Operator | May 2000 |
| 602 | CX Disposals LLC | Minco, OK 73059-9472 | Oil Operator | May 2026 |
| 603 | Cxy Energy, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2000 |
| 604 | Cyanostar Energy Inc | Tulsa, OK 74103-4122 | Oil & Gas Operator | Feb 1999 |
| 605 | Cypress Exploration Company | Tulsa, OK 74132 | Oil & Gas Operator | Feb 2026 |
| 606 | Czar Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Oct 1992 |