| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Alpha Energy LLC | Ashland, OR 97520 | Oil & Gas Operator | Jul 2025 |
| 2 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 3 | Anadarko Ogc Company | Houston, TX 77251 | Oil & Gas Operator | Dec 1998 |
| 4 | Anchor Bay Corporation | Denver, CO 80202 | Oil & Gas Operator | Jun 2007 |
| 5 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
| 6 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
| 7 | Arrowhead Resources USA LTD | Oil & Gas Operator | Dec 1992 |