| 1 | B & J Developers | | Oil Operator | Oct 1995 |
| 2 | B J Oil Company | Corsicana, TX 75109 | Oil & Gas Operator | Jun 2025 |
| 3 | Bach Oil Production | | Oil Operator | Feb 2025 |
| 4 | Bankoff Oil Comp | | Oil Operator | Jun 1995 |
| 5 | Bankoff Oil Company | Tulsa, OK 74170 | Oil Operator | Sep 2003 |
| 6 | Barton Oil Compa | | Oil Operator | Jan 1986 |
| 7 | Baruch-Foster Co | | Oil Operator | Apr 1989 |
| 8 | Basgall Oil LLC | Hays, KS 67601 | Oil Operator | Feb 2025 |
| 9 | Bear Petroleum LLC | Haysville, KS 67060 | Oil & Gas Operator | Feb 2025 |
| 10 | Bell Brothers | | Oil Operator | Feb 2025 |
| 11 | Belport Oil, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2025 |
| 12 | Benchmark Energy LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2023 |
| 13 | Benchmark Oil & Gas Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 14 | Bennett & Schult | | Oil Operator | Jul 1995 |
| 15 | Bennett & Schulte Oil Co., A General Partnership | Russell, KS 67665 | Oil Operator | Feb 2025 |
| 16 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 17 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 18 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 19 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 20 | Big 'J' Prod Com | | Oil & Gas Operator | Aug 1992 |
| 21 | Big Bear Resourc | | Oil Operator | Jan 1989 |
| 22 | Big Horn Oil Co., Inc. | Great Bend, KS 67530 | Oil & Gas Operator | May 2013 |
| 23 | Big Ticket, LLC | Lawrence, KS 66047 | Oil Operator | Aug 2024 |
| 24 | Billips Trust - | | Oil Operator | Nov 1996 |
| 25 | Black Diamond Oi | | Oil Operator | Dec 1996 |
| 26 | Black Diamond Oil, Inc. | Hays, KS 67601 | Oil Operator | Apr 2019 |
| 27 | Black Rock Resources, LLC | Russell, KS 67665 | Oil Operator | Feb 2025 |
| 28 | Blackhawk Production Company | | Oil Operator | Feb 2025 |
| 29 | Bolding Grady Co | | Oil & Gas Operator | Nov 1995 |
| 30 | Bow Creek Oil Company, General Partnership | Hays, KS 67601 | Oil & Gas Operator | Feb 2017 |
| 31 | Bowles, Jack | Edmond, OK 73083 | Oil Operator | Apr 2020 |
| 32 | Bowman Oil Compa | | Oil Operator | Feb 1994 |
| 33 | Bowman Oil Company, A General Partnership | Codell, KS 67663 | Oil Operator | Feb 2025 |
| 34 | Boxberger, Carl Oil, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2009 |
| 35 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Jan 2025 |
| 36 | Braden-Deem Inco | | Oil & Gas Operator | Nov 1994 |
| 37 | Braun, John | Victoria, KS 67671 | Oil Operator | Oct 2019 |
| 38 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 39 | Brooks, Wanita M. | Moore, OK 73153 | Oil Operator | Jul 2003 |
| 40 | Brown, Thomas M. (Deceased) | Plainville, KS 67663 | Oil Operator | May 2006 |
| 41 | Brull, Allen | Victoria, KS 67671 | Oil Operator | Feb 2025 |
| 42 | Brungardt Oil And Leasing Inc. | Russell, KS 67665 | Oil Operator | Feb 2025 |