| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | California Resources Production Corporation | Oil & Gas Operator | Jul 2025 | |
| 2 | Calresources LLC | Oil & Gas Operator | Dec 1996 | |
| 3 | Cat Canyon Resources LLC | Oil & Gas Operator | Jul 2025 | |
| 4 | Celeron Oil & Gas Company | Oil & Gas Operator | Dec 1987 | |
| 5 | Champlin Petroleum Co. | Rock Springs, WY 82902 | Oil & Gas Operator | Mar 1991 |
| 6 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 7 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 8 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |