| 1001 | Grecian Gas Company | | Gas Operator | Dec 2002 |
| 1002 | Greco Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 1003 | Greco Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 1004 | Greehey & Company, LTD. | San Antonio, TX 78216 | Oil & Gas Operator | May 2020 |
| 1005 | Greeley, John A. | Eldred, PA 16731 | Oil & Gas Operator | Dec 2024 |
| 1006 | Green Century Exp & Prod, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 1007 | Green Earth Resources Inc. | | Oil & Gas Operator | Dec 2020 |
| 1008 | Green Energy Company | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 1009 | Green Energy Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 1010 | Green Enterprises | | Oil Operator | Apr 2025 |
| 1011 | Green Exploration Company | Austin, TX 78711 | Oil & Gas Operator | Sep 2025 |
| 1012 | Green Gas Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 2020 |
| 1013 | Green J R & Jerr | | Oil Operator | Dec 1991 |
| 1014 | Green Light Operating, LLC. | Austin, TX 78746 | Oil Operator | Sep 2025 |
| 1015 | Green Oil & Gas, Inc. | Winters, TX 79567 | Oil & Gas Operator | Aug 2003 |
| 1016 | Green Oilfield Production L.L.C. | Jennings, KS 67643 | Oil Operator | Apr 2025 |
| 1017 | Green Oper Compa | | Gas Operator | Jan 1970 |
| 1018 | Green Operating | | Oil Operator | Jun 2010 |
| 1019 | Green Operating Company, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2025 |
| 1020 | Green Petroleum Company | Archer City, TX 76351 | Oil & Gas Operator | Nov 1996 |
| 1021 | Green Production, LLC | | Oil & Gas Operator | Dec 2016 |
| 1022 | Green Reserve Energy Holdings LLC | Houston, TX 77077 | Oil & Gas Operator | Jul 2025 |
| 1023 | Green River Exploration Co | Tulsa, OK 74121-1468 | Oil & Gas Operator | Sep 2011 |
| 1024 | Green River Gas Co, Inc | | Oil & Gas Operator | Dec 2010 |
| 1025 | Green River Operating Co Inc | Noble, OK 73068-5521 | Oil & Gas Operator | Feb 2018 |
| 1026 | Green River Resources Inc. | Keystone, CO 80435 | Oil & Gas Operator | Sep 2025 |
| 1027 | Green Star | Somerset, TX 78069 | Oil Operator | Sep 2025 |
| 1028 | Green Valley Disposal Serv LLC | Alva, OK 73717 | Oil Operator | May 2025 |
| 1029 | Green Valley Operating, LLC | Billings, MT 59108 | Oil & Gas Operator | Jun 2025 |
| 1030 | Green Wells Venture LLC | Miami, FL 33131 | Gas Operator | Dec 2024 |
| 1031 | Green William G | Jenks, OK 74037-3233 | Oil & Gas Operator | Apr 2020 |
| 1032 | Green'S Drillng & Mud Ser Inc | Konawa, OK 74849 | Oil Operator | Jan 2013 |
| 1033 | Green, Bobbie | Chautauqua, KS 67334 | Oil Operator | Apr 2025 |
| 1034 | Green, Hugh | Albany, TX 76430 | Oil & Gas Operator | Apr 2012 |
| 1035 | Green, J. R. | Hays, KS 67601 | Oil Operator | Mar 2005 |
| 1036 | Green, Michael Oil | Albany, TX 76430 | Oil Operator | Sep 2025 |
| 1037 | Green, Robert W | Ottawa, KS 66067 | Oil Operator | Nov 1987 |
| 1038 | Green, Roy W. Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2021 |
| 1039 | Greenbriar Energy Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2004 |
| 1040 | Greenbrier Energy Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 1041 | Greenbrier Oper. Co. | Dallas, TX 75229 | Oil & Gas Operator | Feb 2001 |
| 1042 | Greene Energy LLC | Pittsburgh, PA 15241-1405 | Gas Operator | Dec 2006 |
| 1043 | Greene Enterprises, Inc. | Gillette, WY 82717 | Oil Operator | Dec 2009 |
| 1044 | Greene Mary E | Springboro, PA 16435-1635 | Oil & Gas Operator | Dec 2014 |
| 1045 | Greene, R. E. | Baird, TX 79504 | Oil & Gas Operator | Jun 2009 |
| 1046 | Greene, Sheldon K. | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 1047 | Greene, Steven | Le Roy, NY 14482 | Gas Operator | Dec 2024 |
| 1048 | Greene, Vernon | Levelland, TX 79336 | Oil & Gas Operator | May 2002 |
| 1049 | Greenfield Baptist CH | North East, PA 16428-5610 | Gas Operator | Dec 2024 |
| 1050 | Greenhaw, Morris R Oil & Gas Inc | Desdemona, TX 76445 | Oil & Gas Operator | May 2006 |
| 1051 | Greenhaw, Morris R. | Desdemona, TX 76445 | Oil & Gas Operator | Sep 2025 |
| 1052 | Greenhead Energy Operating LLC | Oklahoma City, OK 73131 | Oil & Gas Operator | Jun 2025 |
| 1053 | Greenhill Petroleum Corporation | Houston, TX 77077 | Oil & Gas Operator | Jan 1998 |
| 1054 | Greenlake Energy Operating, LLC | Austin, TX 78746 | Oil & Gas Operator | Sep 2025 |
| 1055 | Greenland Operating LLC | | Oil Operator | Mar 2025 |
| 1056 | Greenland Petroleum Co | Belle Valley, OH 43717 | Oil & Gas Operator | Dec 1991 |
| 1057 | Greenlee Oil And Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Apr 2025 |
| 1058 | Greenlight Enterprises LLC | McKinney, TX 75072 | Oil Operator | Sep 2025 |
| 1059 | Greenridge Oil Company LLC | Mill Valley, CA 94942 | Oil & Gas Operator | Dec 2024 |
| 1060 | Greenridge Oil Inc | New Freeport, PA 15352-1560 | Oil & Gas Operator | Dec 2024 |
| 1061 | Greensburg Energy, LLC | Greensburg, KY 42743 | Oil Operator | Dec 2023 |
| 1062 | Greensburg Oilfield LLC | Zenda, KS 67159 | Oil Operator | Nov 2013 |
| 1063 | Greenstone Energy, LLC | Houston, TX 77208 | Oil Operator | Sep 2025 |
| 1064 | Greenstreet Lloyd | | Oil Operator | Dec 1986 |
| 1065 | Greenville Land Development Co. | Elizabeth, WV 26143-0252 | Oil & Gas Operator | Dec 2021 |
| 1066 | Greenville Oil Company | Greenville, KY 42345 | Oil Operator | Dec 2023 |
| 1067 | Greenville Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Oct 1996 |
| 1068 | Greenway Energy LLC | Mayville, NY 14757 | Oil & Gas Operator | Dec 2024 |
| 1069 | Greenwerks Outdoor Services LLC | Stockdale, TX 78160 | Oil Operator | Sep 2025 |
| 1070 | Greenwich Oil Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 1994 |
| 1071 | Greenwood Energy Inc | Oklahoma City, OK 73116-9083 | Oil & Gas Operator | Mar 2015 |
| 1072 | Greenwood Holding Inc | Englewood, CO 80110 | Oil & Gas Operator | Jun 1993 |
| 1073 | Greenwood Holdings Inc | Englewood, CO BADADDR | Oil & Gas Operator | Jul 1995 |
| 1074 | Greenwood James W | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2014 |
| 1075 | Greenwood Janet | Mannford, OK 74044 | Oil Operator | Apr 2014 |
| 1076 | Greenwood Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2013 |
| 1077 | Greenwood Oil LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 1078 | Greenwood Resources | | Oil & Gas Operator | Jan 1992 |
| 1079 | Greenwood Resources L.L.C. | Pratt, KS 67124 | Oil Operator | Apr 2025 |
| 1080 | Greer & Beckham Gas Co Inc | Shamrock, TX 79079-0606 | Oil & Gas Operator | Aug 2013 |
| 1081 | Greer Energy, Inc. | | Oil Operator | Dec 1996 |
| 1082 | Greer Exploration Corporation | Shreveport, LA 71118 | Oil & Gas Operator | Jul 2017 |
| 1083 | Greer Family Trust | Ponca City, OK 74601-8126 | Oil Operator | Aug 2018 |
| 1084 | Greer Industries, Inc. | Morgantown, WV 26507-1900 | Gas Operator | Dec 2021 |
| 1085 | Greer Oil Compan | | Oil & Gas Operator | Jun 1988 |
| 1086 | Greer Tom & Welm | | Oil Operator | Mar 1995 |
| 1087 | Greer Tom R | Ponca City, OK 74602-2444 | Oil & Gas Operator | May 2013 |
| 1088 | Greer, Inc. | Arnoldsburg, WV 25234 | Oil & Gas Operator | Dec 2021 |
| 1089 | Greer, Joseph V. | Yates Center, KS 66783 | Oil & Gas Operator | Oct 2005 |
| 1090 | Greer, Tom | Ponca City, OK 74602 | Oil Operator | Aug 2016 |
| 1091 | Greg Davis Investments Inc | Edmond, OK 73034-6621 | Oil Operator | May 2020 |
| 1092 | Greg Hall Oil & Gas LLC | Norman, OK 73072 | Oil & Gas Operator | May 2025 |
| 1093 | Gregco, Inc. | Paducah, TX 79248 | Oil & Gas Operator | May 1999 |
| 1094 | Gregg Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2025 |
| 1095 | Gregg Price Corp | Dover, OH 44622 | Oil & Gas Operator | Dec 2014 |
| 1096 | Gregory, J. Russell Inc. | Houston, TX 77025 | Gas Operator | Nov 2009 |
| 1097 | Gregory, JD | | Oil & Gas Operator | Dec 2021 |
| 1098 | Greka Am Inc | Santa Maria, CA 93454 | Oil & Gas Operator | May 2013 |
| 1099 | Grenadier Energy Partners II,LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2020 |
| 1100 | Gresham Oil & Gas (USA) Inc. | Littleton, CO 80122 | Oil & Gas Operator | Jan 1999 |