| 1 | B & H Oil Co. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2025 |
| 2 | B & W Operating, L.L.C. | Nichols Hill, OK 73116 | Oil & Gas Operator | May 2025 |
| 3 | B And G Production, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Jul 2025 |
| 4 | B P Energy | | Oil & Gas Operator | Apr 2015 |
| 5 | Bailey Petroleum Corporation | Oklahoma City, OK 73159-7652 | Oil & Gas Operator | Feb 2004 |
| 6 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 7 | Bay Oaks Resources LLC | Fort Smith, AR 72913-3129 | Gas Operator | Feb 2018 |
| 8 | Bayou Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jan 2015 |
| 9 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2025 |
| 10 | BDB LLC | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2017 |
| 11 | Bear Energy LLC | Drumright, OK 74030-0311 | Oil & Gas Operator | Apr 2022 |
| 12 | Bear Productions Inc | Kinta, OK 74552 | Oil & Gas Operator | Apr 2025 |
| 13 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 14 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 15 | Bergen Floyd | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 16 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 17 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 18 | Black Jewel Resources LTD Co | Berryville, AR 72616-0538 | Oil & Gas Operator | Dec 2014 |
| 19 | Blackbeard Operating East LLC | Midland, TX 79701-4532 | Oil & Gas Operator | Dec 2020 |
| 20 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2025 |
| 21 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Jul 2025 |
| 22 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2025 |
| 23 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2025 |
| 24 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Apr 2025 |
| 25 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | May 2025 |
| 26 | Bolin C W | Wichita Falls, TX 76301-3354 | Oil & Gas Operator | May 1995 |
| 27 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 28 | Bracken Operating, L.L.C. | Perryton, TX 79070 | Oil & Gas Operator | Jul 2025 |
| 29 | Bravo Arkoma LLC | Tulsa, OK 74103-3100 | Oil & Gas Operator | Apr 2025 |
| 30 | Bravo Natural Resources, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 31 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 32 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 33 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Apr 2025 |
| 34 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 35 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2025 |
| 36 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | May 2025 |
| 37 | Briar Oil & Gas - Oklahoma 1 LLC | Houston, TX 77027-9392 | Oil & Gas Operator | Apr 2025 |
| 38 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 39 | Brooken Production Company LLC | Tulsa, OK 74170-1354 | Gas Operator | Apr 2025 |
| 40 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 41 | Bta Energy LLC | Kinta, OK 74552-3132 | Gas Operator | Apr 2025 |
| 42 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 43 | Burk George E | Mannford, OK 74044-0593 | Oil & Gas Operator | Oct 2015 |
| 44 | Burkhart Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2002 |
| 45 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Jul 2025 |
| 46 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |