| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Campbell & Associates | Oil & Gas Operator | Aug 1987 | |
| 2 | Caruthers Operating Co., Inc. | Oil & Gas Operator | Jul 2010 | |
| 3 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Oct 2025 |
| 4 | Cliffs Oil And Gas Company | Oil & Gas Operator | Oct 1997 | |
| 5 | Concord Operating Incorporated | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2008 |
| 6 | Crain & Dore Production Co Inc | Oil & Gas Operator | Oct 1990 |