| 4001 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 4002 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 4003 | Brown, H.L. Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 4004 | Brown, J. Burns Operating Co. | Havre, MT 59501 | Oil & Gas Operator | Jul 2025 |
| 4005 | Brown, Jo Ann Dahl | | Oil & Gas Operator | Jun 2004 |
| 4006 | Brown, John Oil Co. | Eagle Pass, TX 78852 | Oil & Gas Operator | Oct 2025 |
| 4007 | Brown, L. Z. | Andrews, TX 79714 | Gas Operator | Jan 1997 |
| 4008 | Brown, Leon | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2005 |
| 4009 | Brown, Myrvin | Hawesville, KY 42348 | Oil Operator | Dec 2023 |
| 4010 | Brown, Nicholas L. | Iola, KS 66749 | Oil Operator | Apr 2010 |
| 4011 | Brown, Perry B | | Oil & Gas Operator | Apr 2024 |
| 4012 | Brown, Richard E | Hawesville, KY 42348 | Oil Operator | Dec 2023 |
| 4013 | Brown, Russell Operator, Inc. | Alice, TX 78333 | Oil & Gas Operator | Oct 2025 |
| 4014 | Brown, Thomas M. (Deceased) | Plainville, KS 67663 | Oil Operator | May 2006 |
| 4015 | Brown, Toss H. | Lubbock, TX 79408 | Oil & Gas Operator | Aug 2003 |
| 4016 | Brown, William F. | Cheney, KS 67025 | Oil & Gas Operator | Jun 2025 |
| 4017 | Brown, William G. III | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 4018 | Brown-Wiley Producing | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2008 |
| 4019 | Brownco Operating Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Oct 2025 |
| 4020 | Browning & Terry | Archer City, TX 76351 | Oil & Gas Operator | Feb 2009 |
| 4021 | Browning & Welch, Inc. | | Oil & Gas Operator | Mar 2005 |
| 4022 | Browning Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Apr 1994 |
| 4023 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 4024 | Browning Operating Co. | Bellevue, TX 76228 | Oil & Gas Operator | Jun 2020 |
| 4025 | Browning Operating Co., LLC | Henrietta, TX 76365 | Oil & Gas Operator | Oct 2025 |
| 4026 | Browning, L. P. | Van, TX 75790 | Oil & Gas Operator | Oct 2025 |
| 4027 | Browning-Brown Oil | Archer City, TX 76351 | Oil & Gas Operator | Jun 1996 |
| 4028 | Broy Limited Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2017 |
| 4029 | Broyles Oil & Gas, Inc. | | Oil & Gas Operator | Jun 1994 |
| 4030 | Broyles, Charles R. | Pampa, TX 79065 | Gas Operator | Mar 2016 |
| 4031 | Broyles, Gerald Earl | Eureka, KS 67045 | Oil Operator | Apr 1996 |
| 4032 | Broyles-Wheless Industries Inc | | Oil & Gas Operator | Apr 1993 |
| 4033 | BRP Energy, LLC | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 4034 | Bruce & Creighton | Graham, TX 76450 | Oil & Gas Operator | Apr 2000 |
| 4035 | Bruce A Wilbanks | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 4036 | Bruce A. Holmes | | Oil & Gas Operator | Dec 2022 |
| 4037 | Bruce Alan Enterprises Inc | | Oil Operator | Jul 2025 |
| 4038 | Bruce Anderson | | Oil Operator | Dec 1998 |
| 4039 | Bruce H. Weaver & Sons | | Oil Operator | Jan 2025 |
| 4040 | Bruce H. Weaver Prod. | | Oil Operator | Nov 1987 |
| 4041 | Bruce Lonny | | Oil Operator | Sep 1992 |
| 4042 | Bruce N. Lynn | | Oil & Gas Operator | Sep 1994 |
| 4043 | Bruce Oil Compan | | Oil & Gas Operator | Dec 1996 |
| 4044 | Bruce Oil Company, L.L.C. | McPherson, KS 67460 | Oil Operator | Jun 2025 |
| 4045 | Bruce Oil Operat | | Oil Operator | Dec 1987 |
| 4046 | Bruce Operating Account | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 4047 | Bruce Weldon | Lawton, OK 73501-5707 | Oil & Gas Operator | Mar 2000 |
| 4048 | Bruin E&P Operating, LLC | | Oil & Gas Operator | Oct 2021 |
| 4049 | Bruington Operating, L.L.C. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2015 |
| 4050 | Brull, Allen | Victoria, KS 67671 | Oil Operator | Jun 2025 |
| 4051 | Brumar, Inc. | | Oil Operator | Dec 1995 |
| 4052 | Brumbelow, Ronny L. | Wichita Falls, TX 76306 | Oil & Gas Operator | Oct 2004 |
| 4053 | Brumley Prod. | | Oil & Gas Operator | Jun 2006 |
| 4054 | Brundred Petrole | | Oil Operator | Apr 1986 |
| 4055 | Brundred Petroleum Inc | | Oil & Gas Operator | Nov 1992 |
| 4056 | Bruner, Alan | Moline, KS 67353 | Oil Operator | Jun 2003 |
| 4057 | Brungardt Oil And Leasing Inc. | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 4058 | Bruning, Donald F. | Sterling, KS 67579 | Oil Operator | Apr 2001 |
| 4059 | Bruning, Ward A. & Saundra L. | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 4060 | Bruns, H. D. | Scottsville, VA 24590 | Oil & Gas Operator | Feb 2007 |
| 4061 | Brunson Producti | | Oil & Gas Operator | Aug 1993 |
| 4062 | Brunson Production, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Jun 2025 |
| 4063 | Brunsteter Dick Oil & Gas Inc | Alva, OK 73717-0068 | Oil & Gas Operator | Jul 2006 |
| 4064 | Brunton Expl Co, Inc | Littleton, CO 80127 | Oil Operator | Dec 2023 |
| 4065 | Brush Country Energy, L.L.C. | Reno, NV 89503 | Oil & Gas Operator | Nov 1998 |
| 4066 | Brushy Creek Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Oct 2025 |
| 4067 | Bruxoil Inc | | Oil & Gas Operator | Jun 2025 |
| 4068 | Bry-Tex Partners, LLC | Jacksboro, TX 76458 | Oil Operator | Oct 2025 |
| 4069 | Bryan Eugene W S | | Oil & Gas Operator | Nov 1995 |
| 4070 | Bryan Exploration Company | Panhandle, TX 79068 | Gas Operator | Aug 1993 |
| 4071 | Bryan, Dorothy J. | Canton, KS 67428 | Oil & Gas Operator | Nov 2000 |
| 4072 | Bryan, Paul L Mineral Trust | Daytona Beach Shores, FL 32118 | Gas Operator | Dec 2021 |
| 4073 | Bryant & Carr, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1994 |
| 4074 | Bryant & White Oil Co. | Whiteface, TX 79379 | Oil & Gas Operator | Nov 2012 |
| 4075 | Bryant - Chase Energy Corp. | Tyler, TX 75701 | Oil & Gas Operator | Aug 2004 |
| 4076 | Bryant D G And Company | Midlothian, TX 76065-3628 | Oil & Gas Operator | Mar 2025 |
| 4077 | Bryant Expl And Prod Co Inc | Elk City, OK 73648-0827 | Oil & Gas Operator | Apr 2014 |
| 4078 | Bryant Investors, A General Partnership | Lyons, KS 67554 | Oil Operator | Oct 2009 |
| 4079 | Bryant Joe | Helena, OK 73741 | Oil & Gas Operator | Apr 1998 |
| 4080 | Bryant Oil | Levelland, TX 79336 | Oil & Gas Operator | Oct 2025 |
| 4081 | Bryant Oil & Gas Corporation | | Oil & Gas Operator | Mar 1987 |
| 4082 | Brymer Contracting Incorporated | Pleasanton, TX 78064 | Oil & Gas Operator | Oct 2025 |
| 4083 | Brymer, Jack Contr. Serv. | George West, TX 78022 | Oil Operator | Oct 2025 |
| 4084 | BS&W Solutions LLC | | Oil Operator | Jun 2014 |
| 4085 | BSB Oil And Gas, LLC | | Oil & Gas Operator | Dec 2021 |
| 4086 | Bse Production Co. | Victoria, TX 77903 | Oil & Gas Operator | Oct 2025 |
| 4087 | Bsfi Western E & P, Inc. | | Oil & Gas Operator | Jun 2005 |
| 4088 | Bsi Operating, LLC | | Oil & Gas Operator | Dec 2019 |
| 4089 | Bso Inc | Cleveland, OK 74020 | Oil & Gas Operator | Jun 2025 |
| 4090 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 4091 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 4092 | Bta Operating | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 4093 | Bto Venture, Inc. | Wichita Falls, TX 76309 | Oil & Gas Operator | Nov 2012 |
| 4094 | Btu Energy | | Gas Operator | Aug 2009 |
| 4095 | Bubba Lynn Crude | San Marcos, TX 78666 | Oil Operator | Oct 2025 |
| 4096 | Bubenik, Ronnie, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Oct 2025 |
| 4097 | Buccaneer Alaskan Operations, LLC | | Oil & Gas Operator | Dec 2014 |
| 4098 | Buccaneer Operating LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 4099 | Buccaneer Petrol | | Oil Operator | Jan 1988 |
| 4100 | Buccaneer Petroleum Inc | Tonkawa, OK 74653-2513 | Oil & Gas Operator | Jan 2013 |