| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | C. H. C. Gerard | Oil & Gas Operator | Jan 2025 | |
| 2 | Caddo Oil Co.,Inc. | Oil & Gas Operator | Apr 1987 | |
| 3 | Centerpoint Energy FLD Ser Inc | Oil Operator | Feb 2011 | |
| 4 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Oct 2025 |
| 5 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2025 |
| 6 | Claude S. Hinds | Oil Operator | Aug 1985 | |
| 7 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 8 | Cobra-Lyons-Hilliard-Watson | Oil & Gas Operator | Jun 1992 | |
| 9 | Comstock Oil & Gas--La, LLC | Oil & Gas Operator | Dec 2024 | |
| 10 | Crosstex Lig, LLC | Oil Operator | Mar 2014 | |
| 11 | Crystal Oil And Land Company | Oil & Gas Operator | May 1992 | |
| 12 | Crystal Oil Company | Shreveport, LA 71120 | Oil & Gas Operator | Jul 1995 |