| 1001 | Beusa Energy, Inc. | Spring, TX 77380 | Oil & Gas Operator | Apr 2011 |
| 1002 | Beusa Energy, LLC | | Oil & Gas Operator | Nov 2017 |
| 1003 | Bev Exploration, Inc. | | Oil Operator | Jun 1985 |
| 1004 | Beveled Edge Productions LLC | Norman, OK 73069-4941 | Oil Operator | Dec 2019 |
| 1005 | Beveridge Patricia C | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2024 |
| 1006 | Beverly Hills Oil Co. | | Oil & Gas Operator | Dec 1979 |
| 1007 | Bevers SWD, Inc. | Lubbock, TX 79453 | Oil & Gas Operator | Feb 2026 |
| 1008 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 1009 | Bex, Inc. | Nashville, TN 37209 | Oil & Gas Operator | Aug 2007 |
| 1010 | Bexco Operating, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Feb 2026 |
| 1011 | Beymer & Beymer | | Gas Operator | Dec 2009 |
| 1012 | Beymer Brothers, LLC | Lakin, KS 67860 | Gas Operator | Apr 2020 |
| 1013 | Bez Resources LLC | Perry, OK 73077-2204 | Oil & Gas Operator | Mar 2023 |
| 1014 | BF Adventures LLC | Warren, PA 16365-8306 | Oil & Gas Operator | Dec 2025 |
| 1015 | BFD Energy Corporation | Georgetown, TX 78628 | Gas Operator | May 1998 |
| 1016 | BFP Oil Company | Frisco, TX 75034 | Oil & Gas Operator | Feb 2026 |
| 1017 | BFS Petroleum Company | Skiatook, OK 74070-3998 | Oil & Gas Operator | Jan 2004 |
| 1018 | BG Production, LLC | Denver, NC 28037-8088 | Oil & Gas Operator | Dec 2021 |
| 1019 | BG-5, Inc. | Rantoul, KS 66079 | Oil Operator | Sep 2025 |
| 1020 | Bgi Resources LLC | | Oil & Gas Operator | Nov 2025 |
| 1021 | BGM Production, LLC | Borger, TX 79008 | Oil & Gas Operator | Feb 2026 |
| 1022 | BHB Oil Partners LLC | Powell, WY 82435 | Oil Operator | Oct 2025 |
| 1023 | BHB Oil, Inc | | Oil & Gas Operator | Dec 2024 |
| 1024 | BHB Operating Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Feb 2026 |
| 1025 | BHP Billiton Pet(Txla Op) Co | Denver, CO 80202 | Oil & Gas Operator | Jul 2019 |
| 1026 | BHP Billiton Petro (KCS Resources), LLC | | Oil & Gas Operator | Jul 2019 |
| 1027 | BHP Billiton Petro (Txla Operating) Co. | | Gas Operator | Jul 2019 |
| 1028 | BHP Billiton Petro (WSF Operating), Inc. | | Oil & Gas Operator | Jul 2019 |
| 1029 | BHP Billiton Petroleum (Fayetteville), LLC | | Gas Operator | Dec 2017 |
| 1030 | BHP Petroleum (Americas) | Houston, TX 77056-3020 | Oil & Gas Operator | Mar 1993 |
| 1031 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 1032 | BHP Petroleum (USA) Inc | | Oil & Gas Operator | Mar 1993 |
| 1033 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 1034 | BHP Petroleum, Inc. | | Oil & Gas Operator | Aug 1985 |
| 1035 | Bi Joe Development Inc | Columbus, OH 43220 | Oil & Gas Operator | Dec 2024 |
| 1036 | Bialek Oil And Gas Corporation | Harrisville, WV 26362 | Oil & Gas Operator | Dec 2021 |
| 1037 | Biblical Life Inst | Freeport, PA 16229 | Gas Operator | Dec 2025 |
| 1038 | Bibs Oil Corpora | | Oil & Gas Operator | Apr 1987 |
| 1039 | Bickham G C Inc | Ada, OK 74820-8304 | Oil Operator | Jun 2017 |
| 1040 | Bickle Energies LLC | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 1041 | Biddy Audrian Q | Okemah, OK 74859 | Oil & Gas Operator | Aug 2013 |
| 1042 | Bieberle Oil & Gas Inc. | Medicine Lodge, KS 67104 | Oil & Gas Operator | Sep 2025 |
| 1043 | Biedenharn Et Al | | Gas Operator | Nov 1996 |
| 1044 | Biehl Oil Service'S LLC | Bellevue, TX 76228 | Oil & Gas Operator | Nov 2017 |
| 1045 | Biffle SR Bob | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 1046 | Biffle, Jimmy Jack | Muenster, TX 76252 | Oil & Gas Operator | Feb 2017 |
| 1047 | Big "6" Drilling Company | Houston, TX 77063 | Oil & Gas Operator | Mar 2019 |
| 1048 | Big "J" Production Co. | Wichita, KS 67216 | Gas Operator | Dec 2002 |
| 1049 | Big 'J' Prod Com | | Oil & Gas Operator | Aug 1992 |
| 1050 | Big 'O' | | Oil Operator | Sep 2025 |
| 1051 | Big Al Oil And Gas | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 1052 | Big B Oil Company, LLC | Hays, KS 67601 | Oil Operator | Aug 2025 |
| 1053 | Big Basin Petroleum LLC | Gillette, WY 82717 | Oil & Gas Operator | Oct 2008 |
| 1054 | Big Bear Resourc | | Oil Operator | Jan 1989 |
| 1055 | Big Bend Oil Co | Hominy, OK 74035 | Oil & Gas Operator | Jul 2025 |
| 1056 | Big C Production & Processing, Inc. | Crown City, OH 45623 | Oil & Gas Operator | Dec 2021 |
| 1057 | Big Chief Exploration | Palisades, CO 81526 | Oil & Gas Operator | Oct 1993 |
| 1058 | Big Country Pipe & Supply, Inc. | Saint Jo, TX 76265 | Oil Operator | May 2023 |
| 1059 | Big Creek Energy LLC | Kingfisher, OK 73750-3102 | Oil & Gas Operator | Dec 2025 |
| 1060 | Big Creek Operating Company LLC | Houston, TX 77065 | Oil & Gas Operator | Feb 2026 |
| 1061 | Big Creek Operating, Inc. | | Oil & Gas Operator | Jan 1991 |
| 1062 | Big D Energy Company | New Braunfels, TX 78132 | Oil & Gas Operator | Feb 2026 |
| 1063 | Big Dog Energy LLC | Sewickley, PA 15143-8782 | Gas Operator | Dec 2025 |
| 1064 | Big Easy Operating Company | Houston, TX 77056 | Oil & Gas Operator | Aug 2003 |
| 1065 | Big Eight DRLG Co | | Oil Operator | Dec 2023 |
| 1066 | Big Eight Energy | El Dorado, KS 67042 | Oil Operator | Apr 2001 |
| 1067 | Big Eight Energy, L.L.C. | Wichita, KS 67275 | Oil Operator | Dec 2009 |
| 1068 | Big Four Leasing & Operating Inc | Cushing, OK 74023 | Oil & Gas Operator | Nov 2025 |
| 1069 | Big Four Petroleum Company | Cushing, OK 74023 | Oil & Gas Operator | Nov 2004 |
| 1070 | Big G Exploration, Inc. | | Oil Operator | Mar 1988 |
| 1071 | Big Heart Oil Company, LLC | Smackover, AR 71762 | Oil Operator | Jan 2025 |
| 1072 | Big Horn Oil And Gas Inc. | | Gas Operator | Nov 2025 |
| 1073 | Big Horn Oil Co Inc | Great Bend, KS 67530 | Oil & Gas Operator | May 2013 |
| 1074 | Big Iron Excavation, L.L.C. | Blanket, TX 76432 | Oil Operator | Jan 2022 |
| 1075 | Big Island Operating Corp. | | Oil & Gas Operator | Aug 1988 |
| 1076 | Big J Tank Truck Service Inc | Perry, OK 73077-1238 | Oil Operator | Apr 2014 |
| 1077 | Big Jack Oil & G | | Oil Operator | Sep 1986 |
| 1078 | Big Lake Corporation | Dallas, TX 75222 | Oil & Gas Operator | Feb 2026 |
| 1079 | Big Lake J J Oil & Gas, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2026 |
| 1080 | Big Lime Energy LTD | Medford, OK 73759-0009 | Oil & Gas Operator | Mar 2015 |
| 1081 | Big M Oil Company | | Oil & Gas Operator | Jan 2025 |
| 1082 | Big Man Oil Co, Inc | Owensboro, KY 42302 | Oil & Gas Operator | Dec 2023 |
| 1083 | Big Mountain Operating LLC | Decatur, TX 76234 | Oil & Gas Operator | Feb 2026 |
| 1084 | Big Muddy Operating LLC | Casper, WY 82602 | Oil Operator | Dec 2025 |
| 1085 | Big Pine Petroleum Inc. | | Oil & Gas Operator | Dec 2024 |
| 1086 | Big Piney Oil & Gas Company | Dallas, TX 75206 | Oil & Gas Operator | Sep 1992 |
| 1087 | Big River Oil Field Services, LLC | | Oil Operator | Mar 2017 |
| 1088 | Big Rock Oil LLC | Frisco, TX 75034 | Oil Operator | Feb 2026 |
| 1089 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 1090 | Big Sand Drilling Company | Buckhannon, WV 26201-0000 | Oil & Gas Operator | Dec 2021 |
| 1091 | Big Sandy Oil Inc. | Manchaca, TX 78652 | Oil & Gas Operator | Aug 2003 |
| 1092 | Big Shell Oil & Gas, Inc. | Taft, TX 78390 | Oil & Gas Operator | Feb 2026 |
| 1093 | Big Sky Energy Inc | New Concord, OH 43762 | Oil & Gas Operator | Dec 2024 |
| 1094 | Big Sky Energy, LLC | Cody, WY 82414 | Oil & Gas Operator | May 2024 |
| 1095 | Big Sky Exploration LLC | Dana Point, CA 92629-2889 | Oil Operator | Apr 2020 |
| 1096 | Big Sky Gas Co. | Tribune, KS 67879 | Gas Operator | Dec 2001 |
| 1097 | Big Sky Oil Company | Nowata, OK 74048-0187 | Oil & Gas Operator | Mar 2015 |
| 1098 | Big Sky Production Co Inc | Perry, OK 73077 | Oil & Gas Operator | May 2006 |
| 1099 | Big Sky Well Service, Inc. | | Oil & Gas Operator | Aug 2018 |
| 1100 | Big Snowy Resources LP | Billings, MT 59105 | Oil Operator | Dec 2025 |