| 801 | Brothers Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2004 |
| 802 | Brotherton Production Co. | Spokane, WA 99216 | Oil & Gas Operator | Apr 2025 |
| 803 | Broughton Operating Corp. | Pittsburgh, PA 15219 | Oil & Gas Operator | Nov 2000 |
| 804 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 805 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2025 |
| 806 | Brown & Borelli, Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Apr 2025 |
| 807 | Brown & Fox | Iowa Park, TX 76367 | Oil & Gas Operator | Aug 2003 |
| 808 | Brown Industrial Gas, Inc. | Tulsa, OK 74103 | Gas Operator | Sep 2013 |
| 809 | Brown J K Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2003 |
| 810 | Brown Oil & Gas Co. | Mexia, TX 76667 | Oil & Gas Operator | Apr 2025 |
| 811 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 812 | Brown, Al A. | Houston, TX 77002 | Oil & Gas Operator | Feb 1998 |
| 813 | Brown, Buddy | Livingston, TX 77351 | Oil & Gas Operator | Apr 2025 |
| 814 | Brown, C. Douglas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Dec 2005 |
| 815 | Brown, C. L. Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1999 |
| 816 | Brown, Darryl | Graham, TX 76450 | Oil Operator | Dec 1995 |
| 817 | Brown, Darryl Operating L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 818 | Brown, Edmond | Loving, TX 76460 | Oil & Gas Operator | Dec 2017 |
| 819 | Brown, Frank | Graham, TX 76450 | Oil & Gas Operator | Apr 2003 |
| 820 | Brown, Geo. R Partnership,LP,The | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 821 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 822 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 823 | Brown, H.L. Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 824 | Brown, J. Burns Operating Co. | Havre, MT 59501 | Oil & Gas Operator | Feb 2025 |
| 825 | Brown, John Oil Co. | Eagle Pass, TX 78852 | Oil & Gas Operator | Apr 2025 |
| 826 | Brown, L. Z. | Andrews, TX 79714 | Gas Operator | Jan 1997 |
| 827 | Brown, Leon | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2005 |
| 828 | Brown, Russell Operator, Inc. | Alice, TX 78333 | Oil & Gas Operator | Apr 2025 |
| 829 | Brown, Toss H. | Lubbock, TX 79408 | Oil & Gas Operator | Aug 2003 |
| 830 | Brown-Wiley Producing | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2008 |
| 831 | Brownco Operating Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Apr 2025 |
| 832 | Browning & Terry | Archer City, TX 76351 | Oil & Gas Operator | Feb 2009 |
| 833 | Browning Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Apr 1994 |
| 834 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2025 |
| 835 | Browning Operating Co. | Bellevue, TX 76228 | Oil & Gas Operator | Jun 2020 |
| 836 | Browning Operating Co., LLC | Henrietta, TX 76365 | Oil & Gas Operator | Apr 2025 |
| 837 | Browning, L. P. | Van, TX 75790 | Oil & Gas Operator | Apr 2025 |
| 838 | Browning-Brown Oil | Archer City, TX 76351 | Oil & Gas Operator | Jun 1996 |
| 839 | Broyles, Charles R. | Pampa, TX 79065 | Gas Operator | Mar 2016 |
| 840 | BRP Energy, LLC | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2025 |
| 841 | Bruce & Creighton | Graham, TX 76450 | Oil & Gas Operator | Apr 2000 |
| 842 | Bruce Operating Account | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 843 | Bruington Operating, L.L.C. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2015 |
| 844 | Brumbelow, Ronny L. | Wichita Falls, TX 76306 | Oil & Gas Operator | Oct 2004 |
| 845 | Bruns, H. D. | Scottsville, VA 24590 | Oil & Gas Operator | Feb 2007 |
| 846 | Brush Country Energy, L.L.C. | Reno, NV 89503 | Oil & Gas Operator | Nov 1998 |
| 847 | Brushy Creek Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Apr 2025 |
| 848 | Bry-Tex Partners, LLC | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 849 | Bryan Exploration Company | Panhandle, TX 79068 | Gas Operator | Aug 1993 |
| 850 | Bryant & Carr, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1994 |
| 851 | Bryant & White Oil Co. | Whiteface, TX 79379 | Oil & Gas Operator | Nov 2012 |
| 852 | Bryant - Chase Energy Corp. | Tyler, TX 75701 | Oil & Gas Operator | Aug 2004 |
| 853 | Bryant Oil | Levelland, TX 79336 | Oil & Gas Operator | Apr 2025 |
| 854 | Brymer Contracting Incorporated | Pleasanton, TX 78064 | Oil & Gas Operator | Apr 2025 |
| 855 | Brymer, Jack Contr. Serv. | George West, TX 78022 | Oil Operator | Apr 2025 |
| 856 | Bse Production Co. | Victoria, TX 77903 | Oil & Gas Operator | Apr 2025 |
| 857 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 858 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 859 | Bto Venture, Inc. | Wichita Falls, TX 76309 | Oil & Gas Operator | Nov 2012 |
| 860 | Bubba Lynn Crude | San Marcos, TX 78666 | Oil Operator | Apr 2025 |
| 861 | Bubenik, Ronnie, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Apr 2025 |
| 862 | Buccaneer Operating LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 863 | Buchanan, Billy R. | Coahoma, TX 79511 | Oil & Gas Operator | Apr 2025 |
| 864 | Buck Management Co. L.L.C. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 2025 |
| 865 | Buck Production Co LLC | Bristow, OK 74010 | Oil & Gas Operator | Sep 2023 |
| 866 | Buck Production Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2025 |
| 867 | Buck Wheat Resources, L.P. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2025 |
| 868 | Buck, George | Laredo, TX 78041 | Oil & Gas Operator | Aug 2003 |
| 869 | Buckeye Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2018 |
| 870 | Buckeye Oil Producing Co. | Wooster, OH 44691-129 | Oil & Gas Operator | Dec 2024 |
| 871 | Buckhorn Oilfield Service Inc | Kilgore, TX 75663 | Oil Operator | Apr 2025 |
| 872 | Buckhorn Operating LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | Apr 2025 |
| 873 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2025 |
| 874 | Bud'S Drilling Company, Inc. | Brookshire, TX 77423 | Oil & Gas Operator | Apr 2025 |
| 875 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | Apr 2025 |
| 876 | Buffalo Raider Consulting, LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2025 |
| 877 | Buffalo Resources Co. | Rosenberg, TX 77471 | Oil & Gas Operator | Sep 2000 |
| 878 | Buffalo Xxii Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2025 |
| 879 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2025 |
| 880 | Bugington Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2018 |
| 881 | Bull Oil Company, LLC | Livingston, TX 77351 | Oil & Gas Operator | Apr 2025 |
| 882 | Bull Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2025 |
| 883 | Bulldog Exploration, LP | Houston, TX 77090 | Oil & Gas Operator | Apr 2011 |
| 884 | Bulldog Operating Company | Artesia, NM 88211 | Oil & Gas Operator | Jan 2014 |
| 885 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | Apr 2025 |
| 886 | Bullin, R. E. Operating Inc. | Levelland, TX 79336 | Oil & Gas Operator | Apr 2025 |
| 887 | Bullin, R.E. | Levelland, TX 79336 | Oil & Gas Operator | May 1994 |
| 888 | Bullitt Oil | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2016 |
| 889 | Bulwark Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 890 | Burger, F.W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 891 | Burger, Ken | Pampa, TX 79065 | Oil & Gas Operator | Apr 2025 |
| 892 | Burgess Energy, Inc. | South Bend, TX 76481 | Oil & Gas Operator | Apr 2025 |
| 893 | Burgess, Sim E. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 894 | Burgess, W. E. | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2025 |
| 895 | Burgundy Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 896 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 897 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 898 | Burk, H. V. | Fort Worth, TX 76101 | Oil & Gas Operator | Jan 2006 |
| 899 | Burk-Gunn Oil Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2018 |
| 900 | Burkard Petroleum Company | Houston, TX 77056 | Oil & Gas Operator | May 2003 |