| 4001 | Brookston Resources, Inc | Newburgh, IN 47630 | Oil Operator | Dec 2023 |
| 4002 | Brookwater Energy Services, LLC | | Oil & Gas Operator | Dec 2024 |
| 4003 | Brookwood Oil Company | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2002 |
| 4004 | Broschat Engineering & Management Services, Inc. | | Oil & Gas Operator | May 2017 |
| 4005 | Brothers Oil & Equipment, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 4006 | Brothers Operating Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 4007 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 4008 | Brothers Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2004 |
| 4009 | Brotherton Production Co. | Spokane, WA 99216 | Oil & Gas Operator | Apr 2025 |
| 4010 | Brougher Oil, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Apr 2002 |
| 4011 | Broughton Brothers Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 2010 |
| 4012 | Broughton Foods Co | Marietta, OH 45750 | Oil & Gas Operator | Dec 2010 |
| 4013 | Broughton Oil | | Oil Operator | Nov 1985 |
| 4014 | Broughton Operating Corp. | Pittsburgh, PA 15219 | Oil & Gas Operator | Nov 2000 |
| 4015 | Browder & Ratcliff | Dewey, OK 74029 | Oil Operator | Aug 2000 |
| 4016 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 4017 | Brower Oil & Gas Inc | Jenks, OK 74037 | Oil & Gas Operator | Nov 2022 |
| 4018 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2025 |
| 4019 | Brown & Bickerstaff | | Oil & Gas Operator | Oct 1991 |
| 4020 | Brown & Borelli, Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Apr 2025 |
| 4021 | Brown & Brown Of Pawnee Inc | Pawnee, OK 74058-9702 | Oil Operator | Jan 2013 |
| 4022 | Brown & Brown Production Inc | Ratliff City, OK 73481 | Oil & Gas Operator | Jan 2025 |
| 4023 | Brown & Fox | Iowa Park, TX 76367 | Oil & Gas Operator | Aug 2003 |
| 4024 | Brown & McKenzie, Inc. | | Oil & Gas Operator | May 1984 |
| 4025 | Brown & Payne Oil DRLG, Inc | Hawesville, KY 42348 | Oil Operator | Dec 2023 |
| 4026 | Brown Alan L | Pawhuska, OK 74056 | Oil & Gas Operator | Dec 2024 |
| 4027 | Brown B J | Tulsa, OK 74133 | Gas Operator | Jan 2007 |
| 4028 | Brown Curt Operating Company | Tulsa, OK 74105 | Oil Operator | Nov 1998 |
| 4029 | Brown Don J | Cleveland, OK 74020 | Oil & Gas Operator | Mar 2014 |
| 4030 | Brown Dorla M Trust | Tulsa, OK 74133-2926 | Oil & Gas Operator | Dec 2021 |
| 4031 | Brown Doug & Larita | Newcastle, WY 82701 | Oil & Gas Operator | Dec 2024 |
| 4032 | Brown Drilling Company | Mounds, OK 74047-4263 | Oil & Gas Operator | Oct 2020 |
| 4033 | Brown Gary E | Tecumseh, OK 74873-0355 | Oil & Gas Operator | Aug 2015 |
| 4034 | Brown Gene Compa | | Oil Operator | Sep 1995 |
| 4035 | Brown Gregory L Co Inc | Houston, TX 77056 | Oil & Gas Operator | Dec 1991 |
| 4036 | Brown Industrial Gas, Inc. | Tulsa, OK 74103 | Gas Operator | Sep 2013 |
| 4037 | Brown J K Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2003 |
| 4038 | Brown Jeff J Dba Brown Service Co | Enid, OK 73701 | Oil & Gas Operator | Feb 2025 |
| 4039 | Brown Jr Roy M | Sasakwa, OK 74867-0027 | Oil Operator | Nov 2016 |
| 4040 | Brown Kenny Ente | | Oil Operator | Jul 1995 |
| 4041 | Brown L C Company | Ada, OK 74820-7916 | Oil & Gas Operator | Nov 2021 |
| 4042 | Brown L S | Hominy, OK 74035 | Oil & Gas Operator | Sep 2024 |
| 4043 | Brown Oil & Gas Co. | Mexia, TX 76667 | Oil & Gas Operator | Apr 2025 |
| 4044 | Brown Oil & Gas LLC | | Oil & Gas Operator | Feb 2025 |
| 4045 | Brown Oil Properties | | Oil Operator | Nov 1983 |
| 4046 | Brown Operating | | Oil & Gas Operator | Dec 1991 |
| 4047 | Brown Operating & MGMT Corp. | | Oil & Gas Operator | Feb 1991 |
| 4048 | Brown Operating Inc | Casper, WY 82602 | Oil & Gas Operator | May 2019 |
| 4049 | Brown Phillip H Jr. Corporatio | Lowell, OH 45744 | Oil & Gas Operator | Dec 2002 |
| 4050 | Brown Shirley | Buffalo, WY 82834 | Oil & Gas Operator | Oct 2010 |
| 4051 | Brown Tank & Equipment Inc | Blackwell, OK 74631-5600 | Oil Operator | Oct 2000 |
| 4052 | Brown Tom Constr | | Oil Operator | Dec 1995 |
| 4053 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 4054 | Brown Vernon L & Bonita | Cleveland, OK 74020-4426 | Oil & Gas Operator | Apr 2009 |
| 4055 | Brown VIola E. | Plainville, KS 67663 | Oil Operator | May 2014 |
| 4056 | Brown, Al A. | Houston, TX 77002 | Oil & Gas Operator | Feb 1998 |
| 4057 | Brown, Buddy | Livingston, TX 77351 | Oil & Gas Operator | Apr 2025 |
| 4058 | Brown, C. Douglas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Dec 2005 |
| 4059 | Brown, C. L. Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1999 |
| 4060 | Brown, Darryl | Graham, TX 76450 | Oil Operator | Dec 1995 |
| 4061 | Brown, Darryl Operating L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 4062 | Brown, Edmond | Loving, TX 76460 | Oil & Gas Operator | Dec 2017 |
| 4063 | Brown, Edward L. | | Oil Operator | Sep 1980 |
| 4064 | Brown, Frank | Graham, TX 76450 | Oil & Gas Operator | Apr 2003 |
| 4065 | Brown, Gene Company | Plainville, KS 67663 | Oil Operator | May 1996 |
| 4066 | Brown, Geo. R Partnership,LP,The | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 4067 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 4068 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 4069 | Brown, H.L. Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 4070 | Brown, J. Burns Operating Co. | Havre, MT 59501 | Oil & Gas Operator | Feb 2025 |
| 4071 | Brown, Jo Ann Dahl | | Oil & Gas Operator | Jun 2004 |
| 4072 | Brown, John Oil Co. | Eagle Pass, TX 78852 | Oil & Gas Operator | Apr 2025 |
| 4073 | Brown, L. Z. | Andrews, TX 79714 | Gas Operator | Jan 1997 |
| 4074 | Brown, Leon | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2005 |
| 4075 | Brown, Myrvin | Hawesville, KY 42348 | Oil Operator | Dec 2023 |
| 4076 | Brown, Nicholas L. | Iola, KS 66749 | Oil Operator | Apr 2010 |
| 4077 | Brown, Perry B | | Oil & Gas Operator | Apr 2024 |
| 4078 | Brown, Richard E | Hawesville, KY 42348 | Oil Operator | Dec 2023 |
| 4079 | Brown, Russell Operator, Inc. | Alice, TX 78333 | Oil & Gas Operator | Apr 2025 |
| 4080 | Brown, Thomas M. (Deceased) | Plainville, KS 67663 | Oil Operator | May 2006 |
| 4081 | Brown, Toss H. | Lubbock, TX 79408 | Oil & Gas Operator | Aug 2003 |
| 4082 | Brown, William F. | Cheney, KS 67025 | Oil & Gas Operator | Dec 2024 |
| 4083 | Brown, William G. III | Westfield, NY 14787 | Gas Operator | Dec 2023 |
| 4084 | Brown-Wiley Producing | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2008 |
| 4085 | Brownco Operating Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Apr 2025 |
| 4086 | Browning & Terry | Archer City, TX 76351 | Oil & Gas Operator | Feb 2009 |
| 4087 | Browning & Welch, Inc. | | Oil & Gas Operator | Mar 2005 |
| 4088 | Browning Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Apr 1994 |
| 4089 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2025 |
| 4090 | Browning Operating Co. | Bellevue, TX 76228 | Oil & Gas Operator | Jun 2020 |
| 4091 | Browning Operating Co., LLC | Henrietta, TX 76365 | Oil & Gas Operator | Apr 2025 |
| 4092 | Browning, L. P. | Van, TX 75790 | Oil & Gas Operator | Apr 2025 |
| 4093 | Browning-Brown Oil | Archer City, TX 76351 | Oil & Gas Operator | Jun 1996 |
| 4094 | Broy Limited Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2017 |
| 4095 | Broyles Oil & Gas, Inc. | | Oil & Gas Operator | Jun 1994 |
| 4096 | Broyles, Charles R. | Pampa, TX 79065 | Gas Operator | Mar 2016 |
| 4097 | Broyles, Gerald Earl | Eureka, KS 67045 | Oil Operator | Apr 1996 |
| 4098 | Broyles-Wheless Industries Inc | | Oil & Gas Operator | Apr 1993 |
| 4099 | BRP Energy, LLC | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2025 |
| 4100 | Bruce & Creighton | Graham, TX 76450 | Oil & Gas Operator | Apr 2000 |