| 1 | B & H Oil Co. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2025 |
| 2 | Baker, Eberle Energy Corp. | Blackwell, OK 74631 | Oil & Gas Operator | Mar 2015 |
| 3 | Ballard & Associates Inc | Billings, MT 59102-5406 | Oil & Gas Operator | Feb 2000 |
| 4 | Ballard Petroleum LLC | Billings, MT 59102-5406 | Oil & Gas Operator | Apr 2014 |
| 5 | Banner Oil & Gas LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Jun 2025 |
| 6 | Barber Oil LLC | Tulsa, OK 74137-3575 | Oil & Gas Operator | Jun 2025 |
| 7 | Barbour Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Oct 2025 |
| 8 | Basin Operating Services II LLC | Oklahoma City, OK 73106-5615 | Oil & Gas Operator | Jun 2025 |
| 9 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 10 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 11 | Becker Oil Corporation | Ponca City, OK 74602 | Oil & Gas Operator | Jun 2025 |
| 12 | Bergen Floyd | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 13 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 14 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 15 | Blackcat Oil Company | Glencoe, OK 74032 | Oil & Gas Operator | Jul 2025 |
| 16 | Blackwell Operating LLC | Andrews, TX 79714 | Oil & Gas Operator | May 2025 |
| 17 | Blaik Oil Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2009 |
| 18 | Blubaugh Marvin C | Tonkawa, OK 74653-4739 | Oil & Gas Operator | Nov 2014 |
| 19 | Blubaugh Ronald D | Tonkawa, OK 74653-0066 | Oil & Gas Operator | Sep 2014 |
| 20 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jul 2025 |
| 21 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Jun 2025 |
| 22 | Bluff Oil Corporation | Newkirk, OK 74647 | Oil & Gas Operator | Jan 2013 |
| 23 | Boradi Petroleum Corporation | Oklahoma City, OK 73102 | Oil Operator | Nov 1998 |
| 24 | Bossa Alan Dba The Land Company | Ringling, OK 73456-2088 | Oil & Gas Operator | Mar 2025 |
| 25 | Boswell Energy Corp. | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 26 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 27 | Braden Companies Inc | Edmond, OK 73013-3671 | Oil & Gas Operator | Jun 2025 |
| 28 | Branstetter Olin R | Ponca City, OK 74601-3432 | Oil Operator | Jul 2001 |
| 29 | Braxton Oil And Gas Corp. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2021 |
| 30 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Jun 2025 |
| 31 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 32 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 33 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 34 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 35 | Bromar Oil Company | Fairview, OK 73737-0006 | Oil & Gas Operator | Apr 2014 |
| 36 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 37 | Brown Tank & Equipment Inc | Blackwell, OK 74631-5600 | Oil Operator | Oct 2000 |
| 38 | Buccaneer Petroleum Inc | Tonkawa, OK 74653-2513 | Oil & Gas Operator | Jan 2013 |
| 39 | Burchfield Margaret S Dba Nu-Hope Oil Company | Earlsboro, OK 74840 | Oil & Gas Operator | May 2025 |
| 40 | Butler Petroleum Corp | Norman, OK 73069-7111 | Oil & Gas Operator | Dec 1998 |
| 41 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |