| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | C & F Oil Company, Inc. | Oil Operator | Jan 2025 | |
| 2 | Callon Petroleum Company | Natchez, MS 39120 | Oil & Gas Operator | Jan 2000 |
| 3 | Capital Gas, Inc. | Gas Operator | Jan 1998 | |
| 4 | Carl Oil & Gas Co. | Bakersfield, CA 93309 | Oil & Gas Operator | Dec 1995 |
| 5 | Champ Operating Company | Dallas, TX 75208 | Oil & Gas Operator | Oct 2020 |
| 6 | CHC Energy, LLC | Gas Operator | Nov 2012 | |
| 7 | Cisco Petroleum, Inc. | Oil & Gas Operator | Oct 2010 | |
| 8 | Conquest Petroleum Inc | Oil & Gas Operator | Nov 2014 | |
| 9 | CSC, Inc. | Oil Operator | Jan 2000 | |
| 10 | Custer K. Primos | Oil & Gas Operator | Oct 2002 |