| 1 | B & W Operating, L.L.C. | Nichols Hill, OK 73116 | Oil & Gas Operator | Feb 2025 |
| 2 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 3 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 4 | Bear Productions Inc | Kinta, OK 74552 | Oil & Gas Operator | Jan 2025 |
| 5 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 6 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 7 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 8 | Black Aubrey C | Dallas, TX 75206 | Oil & Gas Operator | Nov 2002 |
| 9 | Blackbeard Operating East LLC | Midland, TX 79701-4532 | Oil & Gas Operator | Dec 2020 |
| 10 | Blackwell Gas Company | | Gas Operator | Jun 1997 |
| 11 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2025 |
| 12 | Bluemark Energy LLC | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2025 |
| 13 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jan 2025 |
| 14 | BP Products North America Inc | Chicago, IL 60606 | Gas Operator | Jan 2017 |
| 15 | Bravo Arkoma LLC | Tulsa, OK 74103-3100 | Oil & Gas Operator | Nov 2024 |
| 16 | Bravo Natural Resources, Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 17 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Jan 2025 |
| 18 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 19 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2025 |
| 20 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Feb 2025 |
| 21 | Briar Oil & Gas - Oklahoma 1 LLC | Houston, TX 77027-9392 | Oil & Gas Operator | Jan 2025 |
| 22 | Brighton Energy LLC | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 |
| 23 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 24 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 25 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 26 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |