| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Beartooth Oil & Gas Company | Billings, MT 59103 | Oil & Gas Operator | Nov 2025 |
| 2 | Bill Barrett Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
| 3 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2025 |
| 4 | BP Exploration Inc | Oil & Gas Operator | May 1993 | |
| 5 | Breitburn Operating LP | Keithville, LA 71047 | Oil & Gas Operator | Dec 2025 |
| 6 | Bullock A O | Casper, WY 82604 | Oil & Gas Operator | Sep 2025 |
| 7 | Bunkirt J J Oil & Gas Corporation | Powell, WY 82435 | Oil & Gas Operator | Nov 2025 |