| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 101 | Crystal Oil And Land Company | Oil & Gas Operator | May 1992 | |
| 102 | Crystal Oil Company | Shreveport, LA 71120 | Oil & Gas Operator | Jul 1995 |
| 103 | CSC Energy Corp. | Oil & Gas Operator | Dec 2009 | |
| 104 | Curtis F. Adams | Oil & Gas Operator | Oct 2024 | |
| 105 | CWJ Operating Co., Inc. | Oil & Gas Operator | Sep 2001 | |
| 106 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2026 |
| 107 | Cypress Resources | Oil & Gas Operator | Jul 2004 |