| 1001 | Great Bend Oil P | | Oil Operator | Jun 1991 |
| 1002 | Great Eastern En | | Oil & Gas Operator | Nov 1995 |
| 1003 | Great Eastern Energy & Dev. Corp. | Midland, TX 79701 | Oil & Gas Operator | Jul 2008 |
| 1004 | Great Horned Owls, LLC | Katy, TX 77494 | Oil & Gas Operator | Nov 2025 |
| 1005 | Great Lakes Chemical Corp | West Lafayette, IN 47906 | Oil & Gas Operator | Nov 2023 |
| 1006 | Great Lakes Conf. Of The Evangelical Covenant | Dewittville, NY 14728 | Gas Operator | Dec 2024 |
| 1007 | Great Lakes Energy Partners | | Gas Operator | Dec 2007 |
| 1008 | Great Lakes Niagaran Inc | | Oil & Gas Operator | Mar 1988 |
| 1009 | Great Lakes Petroleum Producers Inc | | Oil Operator | Jan 2026 |
| 1010 | Great Northern Drilling Company | Billings, MT 59103 | Oil & Gas Operator | Jun 2016 |
| 1011 | Great Northern Energy, Inc | Irving, TX 75039 | Oil & Gas Operator | Feb 2026 |
| 1012 | Great Northern Gas Company | Denver, CO 80293-0602 | Oil & Gas Operator | Jun 2016 |
| 1013 | Great Oak Energy, Inc. | Oakmont, PA 15139-2003 | Oil & Gas Operator | Feb 2021 |
| 1014 | Great Plains Energy, Inc. | Lincoln, NE 68516 | Oil & Gas Operator | Sep 2025 |
| 1015 | Great Plains Exploration LLC | Mentor, OH 44060 | Oil & Gas Operator | Dec 2016 |
| 1016 | Great Plains Oil & Gas | Ada, OK 74820-7209 | Oil & Gas Operator | May 2013 |
| 1017 | Great Plains Oper LLC Dba Great MTN Oper | Grapevine, TX 76051-5477 | Gas Operator | Nov 2015 |
| 1018 | Great Plains Operating Inc | Bristow, OK 74010 | Oil & Gas Operator | Dec 1998 |
| 1019 | Great Plains Operating, LLC. | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2014 |
| 1020 | Great Plains Pet | | Oil & Gas Operator | Mar 1995 |
| 1021 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Sep 2025 |
| 1022 | Great Plains Pipeline Company | Tulsa, OK 74135-6405 | Oil & Gas Operator | Jul 2014 |
| 1023 | Great Plains Resources, Inc. | Nixon, TX 78140 | Oil & Gas Operator | Feb 2026 |
| 1024 | Great River Oil & Gas Corp. | | Oil & Gas Operator | Sep 1998 |
| 1025 | Great Scott, Inc. | | Oil & Gas Operator | Oct 1993 |
| 1026 | Great Southern - Joe Scates | | Oil Operator | Dec 1979 |
| 1027 | Great Southern Oil &Gas Co Inc | | Oil & Gas Operator | Dec 2004 |
| 1028 | Great Southern-Caddo-Lyons | | Oil & Gas Operator | Sep 1982 |
| 1029 | Great Southwestern Expl Inc | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2025 |
| 1030 | Great Texas Crude Inc. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Feb 2026 |
| 1031 | Great Valley Petroleum Inc. | | Oil & Gas Operator | Dec 1994 |
| 1032 | Great Valley Resources, Inc. | | Oil & Gas Operator | Aug 1992 |
| 1033 | Great West Energy & Expl., Inc. | Addison, TX 75001 | Oil & Gas Operator | Mar 2008 |
| 1034 | Great West Operating Co., Inc. | Dallas, TX 75240 | Oil & Gas Operator | Aug 2003 |
| 1035 | Great Western Drilling | | Oil Operator | Dec 2002 |
| 1036 | Great Western Drilling Company | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 1037 | Great Western Equipment Co | Mustang, OK 73064 | Oil & Gas Operator | Nov 2025 |
| 1038 | Great Western Land Co Inc | Tulsa, OK 74136-1517 | Oil & Gas Operator | Jun 2000 |
| 1039 | Great Western Oil Company | | Oil & Gas Operator | Dec 1984 |
| 1040 | Great Western Onshore Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 1041 | Great Western Operating Company LLC | | Oil & Gas Operator | Aug 2020 |
| 1042 | Great Western Resources Inc | | Oil & Gas Operator | Dec 1989 |
| 1043 | Great Yellowstone Corporation | | Oil & Gas Operator | Apr 1993 |
| 1044 | Greatbatch LTD. | Clarence, NY 14031 | Gas Operator | Dec 2024 |
| 1045 | Grecian Gas Company | | Gas Operator | Dec 2002 |
| 1046 | Greco Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 1047 | Greco Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 1048 | Greehey & Company, LTD. | San Antonio, TX 78216 | Oil & Gas Operator | May 2020 |
| 1049 | Greeley, John A. | Eldred, PA 16731 | Oil & Gas Operator | Dec 2024 |
| 1050 | Green Century Exp & Prod, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 1051 | Green Circle Growers, Inc. | Oberlin, OH 44074-9465 | Gas Operator | Dec 2008 |
| 1052 | Green Earth Resources Inc. | | Oil & Gas Operator | Dec 2020 |
| 1053 | Green Energy Company | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 1054 | Green Energy Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 1055 | Green Enterprises | | Oil Operator | Sep 2025 |
| 1056 | Green Exploration Company | Austin, TX 78711 | Oil & Gas Operator | Feb 2026 |
| 1057 | Green Gas Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 2020 |
| 1058 | Green J R & Jerr | | Oil Operator | Dec 1991 |
| 1059 | Green Light Operating, LLC. | Austin, TX 78746 | Oil Operator | Feb 2026 |
| 1060 | Green Oil & Gas, Inc. | Winters, TX 79567 | Oil & Gas Operator | Aug 2003 |
| 1061 | Green Oilfield Production L.L.C. | Jennings, KS 67643 | Oil Operator | Aug 2025 |
| 1062 | Green Oper Compa | | Gas Operator | Jan 1970 |
| 1063 | Green Operating | | Oil Operator | Jun 2010 |
| 1064 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 1065 | Green Petroleum Company | Archer City, TX 76351 | Oil & Gas Operator | Nov 1996 |
| 1066 | Green Production, LLC | | Oil & Gas Operator | Dec 2016 |
| 1067 | Green Reserve Energy Holdings LLC | Houston, TX 77077 | Oil & Gas Operator | Dec 2025 |
| 1068 | Green River Exploration Co | Tulsa, OK 74121-1468 | Oil & Gas Operator | Sep 2011 |
| 1069 | Green River Gas Co, Inc | | Oil & Gas Operator | Dec 2010 |
| 1070 | Green River Operating Co Inc | Noble, OK 73068-5521 | Oil & Gas Operator | Feb 2018 |
| 1071 | Green River Resources Inc. | Keystone, CO 80435 | Oil & Gas Operator | Feb 2026 |
| 1072 | Green Smith Energy LP | Glenpool, OK 74033-3122 | Oil & Gas Operator | Dec 2025 |
| 1073 | Green Star | Somerset, TX 78069 | Oil Operator | Feb 2026 |
| 1074 | Green Valley Disposal Serv LLC | Alva, OK 73717 | Oil Operator | Nov 2025 |
| 1075 | Green Valley Operating, LLC | Billings, MT 59108 | Oil & Gas Operator | Dec 2025 |
| 1076 | Green Wells Venture LLC | Miami, FL 33131 | Gas Operator | Dec 2024 |
| 1077 | Green William G | Jenks, OK 74037-3233 | Oil & Gas Operator | Apr 2020 |
| 1078 | Green'S Drillng & Mud Ser Inc | Konawa, OK 74849 | Oil Operator | Jan 2013 |
| 1079 | Green, Bobbie | Chautauqua, KS 67334 | Oil Operator | Sep 2025 |
| 1080 | Green, Hugh | Albany, TX 76430 | Oil & Gas Operator | Apr 2012 |
| 1081 | Green, J. R. | Hays, KS 67601 | Oil Operator | Mar 2005 |
| 1082 | Green, Michael Oil | Albany, TX 76430 | Oil Operator | Feb 2026 |
| 1083 | Green, Robert W | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2017 |
| 1084 | Green, Roy W. Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2021 |
| 1085 | Greenbriar Energy Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2004 |
| 1086 | Greenbrier Energy Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 1087 | Greenbrier Oper. Co. | Dallas, TX 75229 | Oil & Gas Operator | Feb 2001 |
| 1088 | Greene Energy LLC | Pittsburgh, PA 15241-1405 | Gas Operator | Dec 2006 |
| 1089 | Greene Enterprises, Inc. | Gillette, WY 82717 | Oil Operator | Dec 2009 |
| 1090 | Greene Mary E | Springboro, PA 16435-1635 | Oil & Gas Operator | Dec 2014 |
| 1091 | Greene, R. E. | Baird, TX 79504 | Oil & Gas Operator | Jun 2009 |
| 1092 | Greene, Sheldon K. | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 1093 | Greene, Steven | Le Roy, NY 14482 | Gas Operator | Dec 2024 |
| 1094 | Greene, Vernon | Levelland, TX 79336 | Oil & Gas Operator | May 2002 |
| 1095 | Greenfield Baptist CH | North East, PA 16428-5610 | Gas Operator | Dec 2025 |
| 1096 | Greenhaw, Morris R Oil & Gas Inc | Desdemona, TX 76445 | Oil & Gas Operator | May 2006 |
| 1097 | Greenhaw, Morris R. | Desdemona, TX 76445 | Oil & Gas Operator | Feb 2026 |
| 1098 | Greenhead Energy Operating LLC | Oklahoma City, OK 73131 | Oil & Gas Operator | Dec 2025 |
| 1099 | Greenhill Petroleum Corporation | Houston, TX 77077 | Oil & Gas Operator | Jan 1998 |
| 1100 | Greenlake Energy Operating, LLC | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |