| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Barrett Corporation* Bill | Oil & Gas Operator | Aug 2024 | |
| 2 | Basin Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 3 | Bataa Oil Inc | Greeley, CO 80634 | Oil & Gas Operator | Oct 2024 |
| 4 | Bates* James Edward | Oil & Gas Operator | Jul 2017 | |
| 5 | Bayswater Exploration & Production LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
| 6 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 7 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Dec 2024 |
| 8 | Bic Petroleum Inc | Oil & Gas Operator | Sep 2002 | |
| 9 | Bison IV Operating LLC | Oil & Gas Operator | Sep 2024 | |
| 10 | Black Diamond Minerals LLC | Oil & Gas Operator | Jun 2014 | |
| 11 | Black Hills Exploration & Production Inc | Newcastle, WY 82701 | Oil & Gas Operator | May 2018 |
| 12 | Black Raven Energy Inc | Oil & Gas Operator | Apr 2017 | |
| 13 | Blue & Gray Energy Inc | Oil & Gas Operator | Jun 2011 | |
| 14 | Blue Chip Oil Inc | Oil & Gas Operator | Oct 2024 | |
| 15 | Blue Creek Inc | Oil & Gas Operator | Dec 2002 | |
| 16 | Bonanza Creek Energy Operating Company LLC | Oil & Gas Operator | Sep 2024 | |
| 17 | Brooks Exploration, Inc. | Denver, CO 80293 | Oil & Gas Operator | Mar 2001 |
| 18 | Brown Oil & Gas LLC | Oil & Gas Operator | Oct 2024 |