| 2801 | Big B Oil Company, LLC | Hays, KS 67601 | Oil Operator | Feb 2025 |
| 2802 | Big Basin Petroleum LLC | Gillette, WY 82717 | Oil & Gas Operator | Oct 2008 |
| 2803 | Big Bear Resourc | | Oil Operator | Jan 1989 |
| 2804 | Big Bend Oil Co | Hominy, OK 74035 | Oil & Gas Operator | Jan 2025 |
| 2805 | Big C Production & Processing, Inc. | Crown City, OH 45623 | Oil & Gas Operator | Dec 2021 |
| 2806 | Big Chief Exploration | Palisades, CO 81526 | Oil & Gas Operator | Oct 1993 |
| 2807 | Big Country Pipe & Supply, Inc. | Saint Jo, TX 76265 | Oil Operator | May 2023 |
| 2808 | Big Creek Energy LLC | Kingfisher, OK 73750-3102 | Oil & Gas Operator | May 2025 |
| 2809 | Big Creek Operating Company LLC | Houston, TX 77065 | Oil & Gas Operator | Jul 2025 |
| 2810 | Big Creek Operating, Inc. | | Oil & Gas Operator | Jan 1991 |
| 2811 | Big D Energy Company | New Braunfels, TX 78132 | Oil & Gas Operator | Jul 2025 |
| 2812 | Big Dog Energy LLC | Sewickley, PA 15143-8782 | Gas Operator | Apr 2025 |
| 2813 | Big Easy Operating Company | Houston, TX 77056 | Oil & Gas Operator | Aug 2003 |
| 2814 | Big Eight DRLG Co | | Oil Operator | Dec 2023 |
| 2815 | Big Eight Energy | El Dorado, KS 67042 | Oil Operator | Apr 2001 |
| 2816 | Big Eight Energy, L.L.C. | Wichita, KS 67275 | Oil Operator | Dec 2009 |
| 2817 | Big Four Leasing & Operating Inc | Cushing, OK 74023 | Oil & Gas Operator | Apr 2025 |
| 2818 | Big Four Petroleum Company | Cushing, OK 74023 | Oil & Gas Operator | Nov 2004 |
| 2819 | Big G Exploration, Inc. | | Oil Operator | Mar 1988 |
| 2820 | Big Heart Oil Company, LLC | Smackover, AR 71762 | Oil Operator | Jan 2025 |
| 2821 | Big Horn Oil And Gas Inc. | | Gas Operator | Apr 2025 |
| 2822 | Big Horn Oil Co., Inc. | Great Bend, KS 67530 | Oil & Gas Operator | May 2013 |
| 2823 | Big Iron Excavation, L.L.C. | Blanket, TX 76432 | Oil Operator | Jan 2022 |
| 2824 | Big Island Operating Corp. | | Oil & Gas Operator | Aug 1988 |
| 2825 | Big J Tank Truck Service Inc | Perry, OK 73077-1238 | Oil Operator | Apr 2014 |
| 2826 | Big Jack Oil & G | | Oil Operator | Sep 1986 |
| 2827 | Big Joe Operating Company, Inc. | | Oil & Gas Operator | May 2017 |
| 2828 | Big Lake Corporation | Dallas, TX 75222 | Oil & Gas Operator | Jul 2025 |
| 2829 | Big Lake J J Oil & Gas, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Jul 2025 |
| 2830 | Big M Oil Company | | Oil & Gas Operator | Jan 2025 |
| 2831 | Big Man Oil Co, Inc | Owensboro, KY 42302 | Oil & Gas Operator | Dec 2023 |
| 2832 | Big Mountain Operating LLC | Decatur, TX 76234 | Oil & Gas Operator | Nov 2021 |
| 2833 | Big Muddy Operating LLC | Casper, WY 82602 | Oil Operator | May 2025 |
| 2834 | Big Pine Petroleum Inc. | | Oil & Gas Operator | Dec 2024 |
| 2835 | Big Piney Oil & Gas Company | Dallas, TX 75206 | Oil & Gas Operator | Sep 1992 |
| 2836 | Big River Oil Field Services, LLC | | Oil Operator | Mar 2017 |
| 2837 | Big Rock Oil LLC | Frisco, TX 75034 | Oil Operator | Jul 2025 |
| 2838 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 2839 | Big Sand Drilling Company | Buckhannon, WV 26201-0000 | Oil & Gas Operator | Dec 2021 |
| 2840 | Big Shell Oil & Gas, Inc. | Taft, TX 78390 | Oil & Gas Operator | Jul 2025 |
| 2841 | Big Sky Energy Inc | New Concord, OH 43762 | Oil & Gas Operator | Dec 2023 |
| 2842 | Big Sky Energy, LLC | Cody, WY 82414 | Oil & Gas Operator | May 2024 |
| 2843 | Big Sky Exploration LLC | Dana Point, CA 92629-2889 | Oil Operator | Apr 2020 |
| 2844 | Big Sky Gas Co. | Tribune, KS 67879 | Gas Operator | Dec 2001 |
| 2845 | Big Sky Oil Company | Nowata, OK 74048-0187 | Oil & Gas Operator | Mar 2015 |
| 2846 | Big Sky Production Co Inc | Perry, OK 73077 | Oil & Gas Operator | May 2006 |
| 2847 | Big Sky Well Service, Inc. | | Oil & Gas Operator | Aug 2018 |
| 2848 | Big Snowy Resources LP | Billings, MT 59105 | Oil Operator | Mar 2025 |
| 2849 | Big Star Exploration | Fort Worth, TX 76121 | Oil & Gas Operator | Jul 2025 |
| 2850 | Big Star Investments, LLC | Fort Worth, TX 76121 | Oil & Gas Operator | May 2025 |
| 2851 | Big Star Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2017 |
| 2852 | Big State Industries, Inc. | Houston, TX 77010 | Oil & Gas Operator | Apr 2024 |
| 2853 | Big Three Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Jul 2006 |
| 2854 | Big Ticket, LLC | Lawrence, KS 66047 | Oil Operator | Mar 2025 |
| 2855 | Big Tio, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Jul 2025 |
| 2856 | Big Top Oil & Gas LLC | Lambertville, MI 48144 | Oil Operator | Dec 2023 |
| 2857 | Big Valley Resources | | Oil Operator | Dec 2008 |
| 2858 | Big W Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2017 |
| 2859 | Big Wells Energy Corp | Katy, TX 77494 | Oil & Gas Operator | Sep 2019 |
| 2860 | Big West Of California LLC | | Oil & Gas Operator | Dec 2018 |
| 2861 | Bigfoot Energy Services LLC | Carthage, TX 75633 | Oil & Gas Operator | Aug 2024 |
| 2862 | Bigfoot Oil LLC | Denver, CO 80206 | Oil Operator | Jul 2025 |
| 2863 | Biggs Jerrold L | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 2864 | Biggs Resources, Inc. | | Oil Operator | Apr 1984 |
| 2865 | Biggs, Laura L | | Oil & Gas Operator | Jul 2019 |
| 2866 | Biggy'S Petroleum | | Oil & Gas Operator | Dec 2024 |
| 2867 | Bigiron Oil & Gas LLC | | Oil & Gas Operator | May 2025 |
| 2868 | Biglane Operating Company | | Oil & Gas Operator | May 2025 |
| 2869 | Bike Oil & Gas Company, Inc. | | Oil & Gas Operator | Aug 2002 |
| 2870 | Bilbe Operating Company | Sapulpa, OK 74066 | Oil & Gas Operator | Apr 2003 |
| 2871 | Bilbo Operating | Abilene, TX 79603 | Oil Operator | Mar 2004 |
| 2872 | Bileta Corporation | | Oil & Gas Operator | Aug 2010 |
| 2873 | Bill & Patsy Rich | Hobbs, NM 88240 | Oil Operator | Aug 2003 |
| 2874 | Bill And Jesse, Inc | | Oil & Gas Operator | Dec 2021 |
| 2875 | Bill Barrett Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
| 2876 | Bill Foster | | Oil Operator | Dec 2024 |
| 2877 | Bill Gallagher Enterprises LLC | Newport Beach, CA 92663 | Gas Operator | Jan 2016 |
| 2878 | Bill Gary | | Gas Operator | Jul 1995 |
| 2879 | Bill Hill Oil & Gas, Inc. | Kilgore, TX 75663 | Oil Operator | Apr 2019 |
| 2880 | Bill L Miller | Loco Hills, NM 882550011 | Oil & Gas Operator | May 2021 |
| 2881 | Bill Tarver | | Oil Operator | Nov 2004 |
| 2882 | Bill Taylor | Rio Rancho, NM 87144 | Oil Operator | Apr 2011 |
| 2883 | Bill Weems Oil LLC | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |
| 2884 | Billco Energy Inc | La Plata, NM 87418 | Oil & Gas Operator | Sep 2003 |
| 2885 | Billerio, John | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 2886 | Billfisch Exploration Co., Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Oct 1997 |
| 2887 | Billingsley Engineering Co. | | Oil & Gas Operator | May 1994 |
| 2888 | Billington Oil & Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2025 |
| 2889 | Billips Trust - | | Oil Operator | Nov 1996 |
| 2890 | Bills, L. T. | Snyder, TX 79549 | Oil & Gas Operator | Jul 2025 |
| 2891 | Billy A. Poisso | | Oil & Gas Operator | Apr 2023 |
| 2892 | Billy E. Bayles | | Oil & Gas Operator | Apr 1998 |
| 2893 | Billy Jack Sharber Operating LLC | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |
| 2894 | Billy Judd Investment Company | Ardmore, OK 73401-1095 | Oil & Gas Operator | Apr 2025 |
| 2895 | Billy Matthews Production LLC | Dover, OK 73734 | Oil & Gas Operator | Apr 2025 |
| 2896 | Billy Oil Incorp | | Oil & Gas Operator | Nov 1991 |
| 2897 | Billy P. Bullock-Production | | Oil Operator | Jan 1991 |
| 2898 | Billy Young | | Oil Operator | Aug 1989 |
| 2899 | Bilmac Oil Co., Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jul 2025 |
| 2900 | Bing Harold C | Newcastle, WY 82701 | Oil Operator | Jun 1992 |