| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Allam Carl Oil C | Oil Operator | Mar 1986 | |
| 2 | Allam Production, Inc. | Hutchinson, KS 67504 | Oil & Gas Operator | Jan 2024 |
| 3 | Allam WM Robt Jr | Oil Operator | Aug 1993 | |
| 4 | Anadarko Petrole | Oil & Gas Operator | Dec 1996 | |
| 5 | Anadarko Prod | Oil & Gas Operator | Dec 1996 | |
| 6 | Anstine & Musgrove Inc | Ponca City, OK 74602 | Oil & Gas Operator | Jan 2024 |
| 7 | Argent Energy (Us) Holdings Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Feb 2023 |
| 8 | Ash Donald D Oil | Oil & Gas Operator | Feb 1986 | |
| 9 | Aspen Drilling C | Oil & Gas Operator | Aug 1988 |