| 801 | Belmac, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Nov 1998 |
| 802 | Belmar Oil & Gas, Inc. | Milano, TX 76556 | Oil & Gas Operator | Sep 2025 |
| 803 | Belnorth Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Feb 1991 |
| 804 | Below Ground Level LLC | Sand Springs, OK 74063 | Oil & Gas Operator | Sep 2025 |
| 805 | Belport Oil, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 806 | Belridge Energy Resources Inc. | | Oil & Gas Operator | Jul 2025 |
| 807 | Belter Inc. | Seymour, TX 76380 | Oil Operator | Sep 2025 |
| 808 | Belvan Corp. | Midland, TX 79701 | Oil & Gas Operator | Jun 1998 |
| 809 | Belvoir Energy Inc. | University Heights, OH 44118-3818 | Oil & Gas Operator | Dec 2017 |
| 810 | Bemco, LLC | Medicine Lodge, KS 67104 | Oil Operator | Apr 2025 |
| 811 | Ben Carroll | | Oil Operator | Dec 1985 |
| 812 | Benatty Corp., The | Cambridge, OH 43725-1002 | Oil & Gas Operator | Dec 1996 |
| 813 | Bench Oil | Duncan, OK 73533 | Oil Operator | Apr 2014 |
| 814 | Benchley Donald C | | Oil Operator | Jul 2012 |
| 815 | Benchley Donald P And Benchley Jeffrey P | | Oil Operator | Dec 2020 |
| 816 | Benchmark Crude Inc | Tulsa, OK 74105-5920 | Oil & Gas Operator | Sep 2015 |
| 817 | Benchmark Energy LLC | Pratt, KS 67124 | Oil & Gas Operator | Sep 2023 |
| 818 | Benchmark Oil & | | Oil Operator | Dec 1996 |
| 819 | Benchmark Oil & Gas Co. | Houston, TX 77282 | Oil & Gas Operator | Sep 2025 |
| 820 | Benchmark Oil & Gas Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 821 | Benchmark Production, LLC | Midland, TX 79701 | Oil Operator | May 2006 |
| 822 | Benchmark Resources Group LTD | Sapulpa, OK 74066-3238 | Oil & Gas Operator | Dec 2000 |
| 823 | Benchmark Texas Petroleum, LLC. | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2025 |
| 824 | Benco Energy Inc | Tionesta, PA 16353-5851 | Oil & Gas Operator | Dec 2002 |
| 825 | Benco Operating, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2025 |
| 826 | Bend Petroleum Corp. | Muenster, TX 76252 | Oil & Gas Operator | Nov 2023 |
| 827 | Bender, James J. | | Oil & Gas Operator | Dec 2021 |
| 828 | Bendorf Services & Supply Co | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2000 |
| 829 | Bendorf, Otto Trust | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2000 |
| 830 | Benedum - Trees Oil Co | Chicago, IL 60673 | Oil & Gas Operator | Dec 2005 |
| 831 | Benedum Interests | Pittsburgh, PA 15222-1794 | Gas Operator | Dec 2003 |
| 832 | Benelli Oil LLC | | Oil Operator | Dec 2024 |
| 833 | Bengal Oil & Gas, Inc. | | Gas Operator | Mar 2006 |
| 834 | Bengal Petroleum USA, LLC | Austin, TX 78767 | Oil Operator | Sep 2025 |
| 835 | Bengalia Land And Cattle Company | Tulsa, OK 74152 | Oil & Gas Operator | Apr 2025 |
| 836 | Bengston Oil, LLC | Windom, KS 67491 | Oil Operator | Aug 2024 |
| 837 | Bengtson, Earl L. | Salina, KS 67401 | Oil Operator | Mar 2007 |
| 838 | Benjamin Smeltzer Company | Newport, OH 45768 | Oil & Gas Operator | Dec 2024 |
| 839 | Benn Oil & Gas | Perryton, TX 79070 | Oil & Gas Operator | Jun 2005 |
| 840 | Bennd Oil Company | Adams, TN 37010-8002 | Oil Operator | Apr 2025 |
| 841 | Bennett & Schult | | Oil Operator | Jul 1995 |
| 842 | Bennett & Schulte Oil Co., A General Partnership | Russell, KS 67665 | Oil Operator | Apr 2025 |
| 843 | Bennett Oil | Dale, TX 78616 | Oil & Gas Operator | Sep 2000 |
| 844 | Bennett Oil Comp | | Oil Operator | Mar 1992 |
| 845 | Bennett Oil Company, LLC | Russell, KS 67665 | Oil Operator | Apr 2025 |
| 846 | Bennett Petroleum Corporation | Denver, CO 80203 | Oil Operator | Jun 1985 |
| 847 | Bennett Petroleum Inc. | | Oil & Gas Operator | Jul 2025 |
| 848 | Bennett Production Corporation | Bowie, TX 76230 | Oil & Gas Operator | Apr 2024 |
| 849 | Bennett Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 850 | Bennett, M. Brad Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2005 |
| 851 | Bennett, M. Brad LP | Midland, TX 79710 | Oil & Gas Operator | Jan 2006 |
| 852 | Bennett, M. Troy, Jr. | Freer, TX 78357 | Oil & Gas Operator | Sep 2025 |
| 853 | Bennett, Mills Estate | Houston, TX 77057 | Oil & Gas Operator | Sep 1995 |
| 854 | Bennett, Patricia | Dale, TX 78616 | Oil & Gas Operator | Sep 2025 |
| 855 | Bennett, R. C., Company | Midland, TX 79702 | Oil & Gas Operator | Dec 2019 |
| 856 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 857 | Benson Energy LLC | Smethport, PA 16749-5316 | Oil & Gas Operator | Dec 2024 |
| 858 | Benson Mineral G | | Oil & Gas Operator | Dec 1995 |
| 859 | Benson Mineral Group Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 860 | Benson Operating LLC | The Colony, TX 75056-3578 | Oil & Gas Operator | Jun 2025 |
| 861 | Benson-McCown & Company | Amarillo, TX 79114 | Oil & Gas Operator | Jul 2016 |
| 862 | Benson-Montin-Greer DRL | Farmington, NM 87402 | Oil & Gas Operator | Jul 2025 |
| 863 | Benson-Montin-Greer DRLG Corp | Farmington, NM 87402 | Oil & Gas Operator | Jul 2025 |
| 864 | Benson-Wyatt Oil Co. Inc. | Austin, TX 78767 | Oil & Gas Operator | Jul 2003 |
| 865 | Bensun Energy, LLC | Grandview, TX 76050 | Oil Operator | Aug 2020 |
| 866 | Bent Oak Energy Interests, LLC | Houston, TX 77024 | Oil Operator | Oct 2014 |
| 867 | Bent Tree Energy Resource Inc | Shawnee, OK 74802 | Oil & Gas Operator | Sep 2014 |
| 868 | Bent Twig Operating Corporation | Oklahoma City, OK 73143-4716 | Oil & Gas Operator | Mar 2015 |
| 869 | Bent Wing Energy, LLC | Austin, TX 78746 | Oil & Gas Operator | Sep 2025 |
| 870 | Bentgrass Of Texas, Inc. | Abilene, TX 79608 | Oil Operator | Sep 2025 |
| 871 | Bentley & Laing | Wichita Falls, TX 76302 | Oil & Gas Operator | Feb 2002 |
| 872 | Bentley Family Limited Partnership | | Oil & Gas Operator | Feb 2023 |
| 873 | Bentley Oil & Gas Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2025 |
| 874 | Benton Energy Corporation | | Oil & Gas Operator | Mar 2024 |
| 875 | Benton Oil & Gas | | Gas Operator | Dec 1992 |
| 876 | Benton Oil & Gas Co | Oxnard, CA 93030 | Oil Operator | Nov 1998 |
| 877 | Benton Oil & Gas Company Of La | | Oil & Gas Operator | Apr 1997 |
| 878 | Bep Operating, LLC | Pearland, TX 77581 | Oil & Gas Operator | Sep 2025 |
| 879 | Bepco Operating Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2006 |
| 880 | Bepco, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2008 |
| 881 | Ber-Mor Oil Inc | Perry, OK 73077-1212 | Oil & Gas Operator | Jul 2015 |
| 882 | Berco Oil Co., A General Partnership | Buffalo, KS 66717 | Oil & Gas Operator | Dec 2024 |
| 883 | Berco Resources LLC | Denver, CO 80206 | Oil & Gas Operator | Sep 2009 |
| 884 | Berco Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Feb 2002 |
| 885 | Berea Oil & Gas Corp | Buffalo, NY 14202 | Oil & Gas Operator | Dec 2002 |
| 886 | Beredco Incorpor | | Oil & Gas Operator | Dec 1993 |
| 887 | Beren Corporatio | | Oil & Gas Operator | Dec 1995 |
| 888 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 889 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Jul 2025 |
| 890 | Berentz Drilling | | Oil Operator | Jul 1995 |
| 891 | Berentz Drilling Co., Inc. | Wichita, KS 67278 | Oil Operator | Apr 2025 |
| 892 | Berexco Inc. | Wichita, KS 67208 | Oil & Gas Operator | Oct 2009 |
| 893 | Berexco Incorpor | | Oil & Gas Operator | Dec 1996 |
| 894 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 895 | Berg Laney & Brown | Smackover, AR 71762 | Oil & Gas Operator | Jul 1995 |
| 896 | Berg Petroleum Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 1997 |
| 897 | Berg, Laney & Brown Company | Camden, AR 71701 | Oil Operator | Dec 2024 |
| 898 | Bergen Floyd | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 899 | Berger Oil Company | Edmond, OK 73013-2044 | Oil Operator | Mar 2015 |
| 900 | Bergman Arthur And VIvian | | Oil & Gas Operator | Dec 2008 |