| 1001 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 1002 | Beard Oil Company, LLC | Edna, TX 77957 | Oil & Gas Operator | Sep 2025 |
| 1003 | Beasley Oil Company | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2020 |
| 1004 | Beasley Well Service Inc. | Tuscola, TX 79562 | Oil Operator | Sep 2025 |
| 1005 | Beasley, Kenneth | Abilene, TX 79602 | Oil & Gas Operator | Sep 2025 |
| 1006 | Beaver Oil & Gas Operating, LLC | Austin, TX 78746 | Oil & Gas Operator | Sep 2025 |
| 1007 | Beaver Oil Company Inc | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2020 |
| 1008 | Bebco Parts Industries, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Sep 2025 |
| 1009 | Bechel Oil, LLC. | Maiden Rock, WI 54750 | Oil Operator | Feb 2022 |
| 1010 | Bechtel Energy Resources Corp. | Houston, TX 77210 | Oil & Gas Operator | Jun 1996 |
| 1011 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | May 2025 |
| 1012 | Becker, Clyde M. | Ponca City, OK 74601 | Oil & Gas Operator | Oct 2009 |
| 1013 | Beckham Resources, Inc. | Houston, TX 77010 | Oil & Gas Operator | Mar 2011 |
| 1014 | Beckville Disp Operations, LLC | Henderson, TX 75652 | Oil Operator | Sep 2025 |
| 1015 | Bedford Oil & Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Sep 2025 |
| 1016 | Bedrock Production, LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 1017 | Bee-Jay Energy | Whiteface, TX 79379 | Oil & Gas Operator | Nov 1993 |
| 1018 | Bee-Jay Petro, Inc. | Levelland, TX 79336 | Oil & Gas Operator | Jun 2024 |
| 1019 | Beech Resources LLC | Williamsport, PA 17701-6209 | Gas Operator | Jun 2025 |
| 1020 | Beeda Oil Company | Merkel, TX 79536 | Oil & Gas Operator | Sep 2025 |
| 1021 | Beehive Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 1022 | Beekay Company | Dallas, TX 75219 | Oil & Gas Operator | Dec 1996 |
| 1023 | Beene, Tommy H. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2005 |
| 1024 | Beeson Energy, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Sep 2025 |
| 1025 | Beisch & Hanna | Windthorst, TX 76389 | Oil & Gas Operator | Sep 2025 |
| 1026 | Beisch, Larry | Iowa Park, TX 76367 | Oil & Gas Operator | Sep 2025 |
| 1027 | Beisch, Rusty | Windthorst, TX 76389 | Oil & Gas Operator | Sep 2025 |
| 1028 | Bejo Corporation | Richmond, TX 77407 | Oil & Gas Operator | Sep 2025 |
| 1029 | Bel Oil Corporation | Jenks, OK 74037 | Oil & Gas Operator | Jun 2005 |
| 1030 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 1031 | Belco Operating Corp. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 1032 | Belcor Inc. | Irvine, CA 92714 | Oil & Gas Operator | Nov 2000 |
| 1033 | Bell & Kinley Company | Piedmont, OK 73078 | Oil & Gas Operator | Aug 2017 |
| 1034 | Bell Energy | Kermit, TX 79745 | Oil & Gas Operator | Sep 2025 |
| 1035 | Bell, Cody, Jr. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 1036 | Bell, Johnny Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2025 |
| 1037 | Bell, Kelly Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 1995 |
| 1038 | Bell, O. M. | Merkel, TX 79536 | Oil & Gas Operator | Mar 2008 |
| 1039 | Bellah & Mathiews | Woodson, TX 76491 | Oil & Gas Operator | Sep 2025 |
| 1040 | Bellah Oil, Inc. | Seymour, TX 76380 | Oil & Gas Operator | Dec 2012 |
| 1041 | Bellows Operating Co., L. C. | Goliad, TX 77963 | Oil & Gas Operator | Sep 2025 |
| 1042 | Bellows, Dewey Oper. Co., LTD. | Refugio, TX 78377 | Oil & Gas Operator | Jul 2013 |
| 1043 | Bellows, Richard | Three Rivers, TX 78071 | Oil & Gas Operator | Nov 2008 |
| 1044 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 1045 | Belmac, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Nov 1998 |
| 1046 | Belmar Oil & Gas, Inc. | Milano, TX 76556 | Oil & Gas Operator | Sep 2025 |
| 1047 | Below Ground Level LLC | Sand Springs, OK 74063 | Oil & Gas Operator | Sep 2025 |
| 1048 | Belter Inc. | Seymour, TX 76380 | Oil Operator | Sep 2025 |
| 1049 | Belvan Corp. | Midland, TX 79701 | Oil & Gas Operator | Jun 1998 |
| 1050 | Benchmark Oil & Gas Co. | Houston, TX 77282 | Oil & Gas Operator | Sep 2025 |
| 1051 | Benchmark Production, LLC | Midland, TX 79701 | Oil Operator | May 2006 |
| 1052 | Benchmark Texas Petroleum, LLC. | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2025 |
| 1053 | Benco Energy Inc | Tionesta, PA 16353-5851 | Oil & Gas Operator | Dec 2002 |
| 1054 | Benco Operating, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2025 |
| 1055 | Bend Petroleum Corp. | Muenster, TX 76252 | Oil & Gas Operator | Nov 2023 |
| 1056 | Bendorf Services & Supply Co | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2000 |
| 1057 | Bendorf, Otto Trust | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2000 |
| 1058 | Benedum - Trees Oil Co | Chicago, IL 60673 | Oil & Gas Operator | Dec 2005 |
| 1059 | Bengal Petroleum USA, LLC | Austin, TX 78767 | Oil Operator | Sep 2025 |
| 1060 | Benn Oil & Gas | Perryton, TX 79070 | Oil & Gas Operator | Jun 2005 |
| 1061 | Bennett Oil | Dale, TX 78616 | Oil & Gas Operator | Sep 2000 |
| 1062 | Bennett Production Corporation | Bowie, TX 76230 | Oil & Gas Operator | Apr 2024 |
| 1063 | Bennett Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 1064 | Bennett, M. Brad Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2005 |
| 1065 | Bennett, M. Brad LP | Midland, TX 79710 | Oil & Gas Operator | Jan 2006 |
| 1066 | Bennett, M. Troy, Jr. | Freer, TX 78357 | Oil & Gas Operator | Sep 2025 |
| 1067 | Bennett, Mills Estate | Houston, TX 77057 | Oil & Gas Operator | Sep 1995 |
| 1068 | Bennett, Patricia | Dale, TX 78616 | Oil & Gas Operator | Sep 2025 |
| 1069 | Bennett, R. C., Company | Midland, TX 79702 | Oil & Gas Operator | Dec 2019 |
| 1070 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 1071 | Benson Mineral Group Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 1072 | Benson-McCown & Company | Amarillo, TX 79114 | Oil & Gas Operator | Jul 2016 |
| 1073 | Benson-Wyatt Oil Co. Inc. | Austin, TX 78767 | Oil & Gas Operator | Jul 2003 |
| 1074 | Bent Oak Energy Interests, LLC | Houston, TX 77024 | Oil Operator | Oct 2014 |
| 1075 | Bent Wing Energy, LLC | Austin, TX 78746 | Oil & Gas Operator | Sep 2025 |
| 1076 | Bentgrass Of Texas, Inc. | Abilene, TX 79608 | Oil Operator | Sep 2025 |
| 1077 | Bentley Oil & Gas Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2025 |
| 1078 | Bep Operating, LLC | Pearland, TX 77581 | Oil & Gas Operator | Sep 2025 |
| 1079 | Bepco Operating Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2006 |
| 1080 | Bepco, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2008 |
| 1081 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 1082 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Jul 2025 |
| 1083 | Berexco Inc. | Wichita, KS 67208 | Oil & Gas Operator | Oct 2009 |
| 1084 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 1085 | Berg Laney & Brown | Smackover, AR 71762 | Oil & Gas Operator | Jul 1995 |
| 1086 | Bergman Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Feb 1994 |
| 1087 | Bering Operating Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | May 2001 |
| 1088 | Berkshire Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2025 |
| 1089 | Berkshire Woodlawn Field, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2007 |
| 1090 | Berry Energy Companies | Abilene, TX 79608 | Oil & Gas Operator | Sep 2025 |
| 1091 | Berry Oil Comp. | Houston, TX 77002 | Oil & Gas Operator | Jul 2014 |
| 1092 | Berry Oil Company, LLC | Bakersfield, CA 93311 | Oil & Gas Operator | Apr 2019 |
| 1093 | Berry Petroleum Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2014 |
| 1094 | Berry Petroleum Company LLC | Bakersfield, CA 93311 | Oil & Gas Operator | Jun 2025 |
| 1095 | Berry, Gus | Okmulgee, OK 74447 | Oil & Gas Operator | Feb 1996 |
| 1096 | Berry, O. H. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 1097 | Berry, Thomas N. & Co. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2012 |
| 1098 | Bertram Oil Company, Inc. | Corpus Chrsti, TX 78475 | Oil & Gas Operator | Oct 1995 |
| 1099 | Beryl Oil And Gas, LP | Midland, TX 79710 | Oil & Gas Operator | Sep 2025 |
| 1100 | Besco Operating, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2025 |