| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Acadian Gas Pipeline System | Oil Operator | Jan 2024 | |
| 2 | Alpine Expl. Companies, Inc. | Oil & Gas Operator | Dec 2023 | |
| 3 | Amarex Inc | Oil & Gas Operator | Dec 1996 | |
| 4 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 5 | Aralpa Corporation | Oil & Gas Operator | May 1987 | |
| 6 | Ashland Exploration Inc | Houston, TX 77218 | Oil & Gas Operator | Nov 2000 |
| 7 | Ashland Oil, Inc | Oil & Gas Operator | Dec 2022 | |
| 8 | Associated Natural Gas, Inc. | Oil Operator | Apr 1996 | |
| 9 | Axis Onshore, LLC | Oil & Gas Operator | Apr 2008 | |
| 10 | Axis Onshore, LP | Oil & Gas Operator | Dec 2010 |