| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Aba Energy Corporation | Oil & Gas Operator | Dec 2024 | |
| 2 | Alanmar Energy | Gas Operator | Jan 2018 | |
| 3 | Anacapa Oil Corporation | Gas Operator | Dec 2024 | |
| 4 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Mar 2025 |
| 5 | Apc Operating Partnership | Tulsa, OK 74136 | Oil & Gas Operator | Oct 1996 |
| 6 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 7 | Aspen Exploration Corporation | Oil & Gas Operator | Dec 2007 | |
| 8 | Atlantic Oil Company | Oil & Gas Operator | Dec 2024 |