| 1 | B & B SWD LLC | | Oil Operator | Mar 2024 |
| 2 | B And G Production, Inc. | Woodward, OK 73801 | Oil & Gas Operator | May 2024 |
| 3 | Barbour Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | May 2024 |
| 4 | Barr Energy LLC | Oklahoma City, OK 73111-8129 | Oil Operator | Jun 2010 |
| 5 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 6 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | May 2024 |
| 7 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | May 2024 |
| 8 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2024 |
| 9 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 10 | Beasley Oil Company | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2020 |
| 11 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 12 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Feb 2024 |
| 13 | Below Ground Level LLC | Sand Springs, OK 74063 | Oil & Gas Operator | May 2024 |
| 14 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | May 2024 |
| 15 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 16 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 17 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | May 2024 |
| 18 | Blaik Oil Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2009 |
| 19 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | May 2024 |
| 20 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2024 |
| 21 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Feb 2024 |
| 22 | Bluebonnet Oil LLC | | Oil & Gas Operator | Mar 2024 |
| 23 | Bluegrass Energy Inc | Houston, TX 77057 | Oil & Gas Operator | Mar 2024 |
| 24 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 25 | BMC Petroleum Inc | Enid, OK 73701-2700 | Oil & Gas Operator | Mar 2024 |
| 26 | Bob & Son Oil Company | Hennessey, OK 73742-0578 | Oil & Gas Operator | Jul 2017 |
| 27 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Jan 2024 |
| 28 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Mar 2024 |
| 29 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2024 |
| 30 | Bracksieck Lloyd H | Boulder, CO 80303 | Oil & Gas Operator | Feb 2019 |
| 31 | Brady Fred D | Cleveland, OK 74020 | Oil & Gas Operator | Mar 1997 |
| 32 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | May 2024 |
| 33 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Feb 2024 |
| 34 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 35 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2024 |
| 36 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 37 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Mar 2024 |
| 38 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 39 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 40 | Bromar Oil Company | Fairview, OK 73737-0006 | Oil & Gas Operator | Apr 2014 |
| 41 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | May 2024 |
| 42 | Brown Jeff J Dba Brown Service Co | Enid, OK 73702-1604 | Oil & Gas Operator | Mar 2024 |
| 43 | Buck Production Co LLC | Bristow, OK 74010 | Oil & Gas Operator | Sep 2023 |
| 44 | Buttes Resources Company | Houston, TX 77056 | Oil & Gas Operator | May 2007 |
| 45 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 46 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 47 | BVD Inc | Yates Center, KS 66783-0194 | Oil & Gas Operator | Mar 2024 |