| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Alumni Petroleum And Resource Management Corp | Oil & Gas Operator | Mar 1988 | |
| 2 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
| 3 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Mar 2026 |
| 4 | Apollo Exploration And Development Inc | Oil & Gas Operator | Aug 2025 | |
| 5 | Arbor Operating LLC | Oil & Gas Operator | Jan 2026 | |
| 6 | Arbor Resources LLC | Oil & Gas Operator | Dec 2007 | |
| 7 | Asher Oil LLC | Oil & Gas Operator | Jan 2026 |