| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 2 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
| 3 | Andrikopoulos A G | Cheyenne, WY 82009 | Oil & Gas Operator | Dec 1994 |
| 4 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
| 5 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 6 | Anschutz Pinedale Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2015 |
| 7 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |