| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Allen And Crouch | Casper, WY 82602 | Oil & Gas Operator | Mar 2020 |
| 2 | Alpha Petrovision Us Inc | Canada, 00100 | Oil & Gas Operator | May 2013 |
| 3 | American Energy Partners Inc | Boerne, TX 78006 | Oil & Gas Operator | Dec 2011 |
| 4 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
| 5 | Antelope Energy Company LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 6 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 7 | Ashland Exploration | Oil & Gas Operator | May 1979 | |
| 8 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |