| 1 | B & B SWD LLC | | Oil Operator | Feb 2024 |
| 2 | B & H Oil Co. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2024 |
| 3 | B & S Oil Company | Kermit, TX 79745 | Oil & Gas Operator | Jan 2024 |
| 4 | B And G Production, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Apr 2024 |
| 5 | Bale Corporation (The) | Edmond, OK 73083-6863 | Oil & Gas Operator | Dec 2019 |
| 6 | Banner Oil & Gas LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Jan 2024 |
| 7 | Barr Energy LLC | Oklahoma City, OK 73111-8129 | Oil Operator | Jun 2010 |
| 8 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 9 | Baruch-Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 10 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 11 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Feb 2024 |
| 12 | Be Anadarko LLC | | Oil & Gas Operator | Jan 2024 |
| 13 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 14 | Bechel Oil LLC | Maiden Rock, WI 54750 | Oil Operator | Feb 2022 |
| 15 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2024 |
| 16 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 17 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Apr 2024 |
| 18 | Berry, Thomas N. & Co. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2012 |
| 19 | Bets Oil & Gas | Pawhuska, OK 74056 | Oil & Gas Operator | Nov 2018 |
| 20 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 21 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 22 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 23 | Biffle SR Bob | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 24 | Billy Matthews Production LLC | Dover, OK 73734-0340 | Oil & Gas Operator | Jan 2024 |
| 25 | Binger Operations LLC | Houston, TX 77057-3187 | Oil & Gas Operator | Feb 2024 |
| 26 | Bird Oil & Gas Inc | Yukon, OK 73099-2827 | Oil & Gas Operator | Jan 2023 |
| 27 | Blackhawk Oil Co | Ottawa, KS 66067 | Oil & Gas Operator | Jan 2011 |
| 28 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Apr 2024 |
| 29 | Blaik Oil Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2009 |
| 30 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2024 |
| 31 | Bluegrass Energy Inc | Houston, TX 77057 | Oil & Gas Operator | Feb 2024 |
| 32 | Bluemark Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2024 |
| 33 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 34 | Bob & Son Oil Company | Hennessey, OK 73742-0578 | Oil & Gas Operator | Jul 2017 |
| 35 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Jan 2024 |
| 36 | Bolin C W | Wichita Falls, TX 76301-3354 | Oil & Gas Operator | May 1995 |
| 37 | Bolin R L | Wichita Falls, TX 76308-2829 | Oil & Gas Operator | Apr 2004 |
| 38 | Bolin R L Properties LP | Wichita Falls, TX 76308-2829 | Oil & Gas Operator | Feb 2024 |
| 39 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jan 2024 |
| 40 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 41 | Bracken Energy Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2015 |
| 42 | Bradmar Petroleum Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 43 | Bravo Natural Resources, Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 44 | Breitburn Operating, LP | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 45 | Brent Baker Oil And Gas Inc | Oklahoma City, OK 73149-2932 | Oil & Gas Operator | Feb 2024 |
| 46 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2024 |
| 47 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2023 |
| 48 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 49 | Briscoe Oil Company | Kingfisher, OK 73750-2322 | Oil & Gas Operator | Apr 2014 |
| 50 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 51 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 52 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2024 |
| 53 | Brown L C Company | Ada, OK 74820-7916 | Oil & Gas Operator | Nov 2021 |
| 54 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 55 | Brundred Petroleum Inc | | Oil & Gas Operator | Nov 1992 |
| 56 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 57 | Bull Ring Energy LLC | | Gas Operator | Jan 2024 |
| 58 | Bullard Don W | Ardmore, OK 73401-3646 | Oil & Gas Operator | Dec 2019 |
| 59 | Bulldog Operating Company LLC | Shreveport, LA 71101-3680 | Oil & Gas Operator | Jun 2015 |
| 60 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 61 | Burlington Res Oil & Gas LP | | Oil & Gas Operator | Jan 2024 |
| 62 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 63 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | Apr 2024 |