| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | A. W. Sour, Jr. | Oil Operator | Mar 2003 | |
| 2 | Abco Petroleum Corp. | Oil & Gas Operator | Jan 1999 | |
| 3 | Addie, James & John Thornton | Oil & Gas Operator | Jun 2024 | |
| 4 | Alameda Oil Company | Oil Operator | Mar 1998 | |
| 5 | Apollo Petroleum Corporation | Oil & Gas Operator | Dec 2012 | |
| 6 | Atkins Production | Oil Operator | Dec 2008 |