Oil & Gas Companies in Richland County, MT
|  | Company Name | Company Location | Company Type | Most Recent Production | 
|---|
| 1 | Basic Earth Science Systems, Inc. | Austin, TX 78714 | Oil & Gas Operator | Apr 2010 | 
| 2 | Bensun Energy, LLC | Grandview, TX 76050 | Oil Operator | Aug 2020 | 
| 3 | Berco Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Feb 2002 | 
| 4 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Aug 2025 | 
| 5 | Bill Barrett Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 | 
| 6 | Black Hawk Resources, LLC | Bowman, ND 58623 | Oil & Gas Operator | Jun 2011 | 
| 7 | Blackjack Oil, Inc. | Las Vegas, NV 89128 | Oil & Gas Operator | Nov 2019 | 
| 8 | Brighton Energy LLC | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 | 
| 9 | Brooks Exploration, Inc. | Denver, CO 80293 | Oil & Gas Operator | Mar 2001 | 
| 10 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Oct 2025 | 
Production numbers shown above are only for Richland County, MT and for the production period listed.