| 1 | B & W Operating, L.L.C. | Nichols Hill, OK 73116 | Oil & Gas Operator | Feb 2025 |
| 2 | B B R Oil Corporation | Norman, OK 73069 | Oil & Gas Operator | Jan 2025 |
| 3 | Bannon Operating Inc | Houston, TX 77068 | Oil & Gas Operator | Sep 2003 |
| 4 | Baruch-Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 5 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Feb 2025 |
| 6 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 7 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2025 |
| 8 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 9 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 10 | Bentley & Laing | Wichita Falls, TX 76302 | Oil & Gas Operator | Feb 2002 |
| 11 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 12 | Billy Judd Investment Company | Ardmore, OK 73401-1095 | Oil & Gas Operator | Feb 2025 |
| 13 | Black Creek Exploration LLC | Healdton, OK 73438 | Oil & Gas Operator | Feb 2025 |
| 14 | Black Mesa Energy LLC | Tulsa, OK 74103-4334 | Oil & Gas Operator | Jan 2025 |
| 15 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Apr 2025 |
| 16 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Feb 2025 |
| 17 | Bond Drilling Company | Marietta, OK 73448-0372 | Oil & Gas Operator | Apr 2017 |
| 18 | Bond Oil & Gas LLC | Marietta, OK 73448 | Oil & Gas Operator | Feb 2025 |
| 19 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jan 2025 |
| 20 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 21 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2025 |
| 22 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 23 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Jan 2025 |
| 24 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 25 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 26 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |