| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Acadian Gas Pipeline System | Oil Operator | Jul 2024 | |
| 2 | Adams Resources Expl. Corp. | Houston, TX 77001 | Oil & Gas Operator | Apr 2020 |
| 3 | Aldine Oil And Gas, LP | Houston, TX 77060 | Oil & Gas Operator | Nov 2024 |
| 4 | Alta Mesa Services, LP | Houston, TX 77084 | Oil & Gas Operator | Nov 2024 |
| 5 | American Exploration Oper. Co. | Oil & Gas Operator | May 1990 | |
| 6 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 7 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Nov 2024 |
| 8 | Apd Company | Oil & Gas Operator | Apr 1987 | |
| 9 | Arco O & G Co-Div Atl Rich Co | Oil & Gas Operator | Feb 1994 |