| 12001 | Greehey & Company, LTD. | San Antonio, TX 78216 | Oil & Gas Operator | May 2020 |
| 12002 | Greeley, John A. | Eldred, PA 16731 | Oil & Gas Operator | Dec 2024 |
| 12003 | Green Century Exp & Prod, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 12004 | Green Earth Resources Inc. | | Oil & Gas Operator | Dec 2020 |
| 12005 | Green Energy Company | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 12006 | Green Energy Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 12007 | Green Enterprises | | Oil Operator | Sep 2025 |
| 12008 | Green Exploration Company | Austin, TX 78711 | Oil & Gas Operator | Feb 2026 |
| 12009 | Green Gas Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 2020 |
| 12010 | Green J R & Jerr | | Oil Operator | Dec 1991 |
| 12011 | Green Light Operating, LLC. | Austin, TX 78746 | Oil Operator | Feb 2026 |
| 12012 | Green Oil & Gas, Inc. | Winters, TX 79567 | Oil & Gas Operator | Aug 2003 |
| 12013 | Green Oilfield Production L.L.C. | Jennings, KS 67643 | Oil Operator | Aug 2025 |
| 12014 | Green Oper Compa | | Gas Operator | Jan 1970 |
| 12015 | Green Operating | | Oil Operator | Jun 2010 |
| 12016 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 12017 | Green Petroleum Company | Archer City, TX 76351 | Oil & Gas Operator | Nov 1996 |
| 12018 | Green Production, LLC | | Oil & Gas Operator | Dec 2016 |
| 12019 | Green Reserve Energy Holdings LLC | Houston, TX 77077 | Oil & Gas Operator | Nov 2025 |
| 12020 | Green River Exploration Co | Tulsa, OK 74121-1468 | Oil & Gas Operator | Sep 2011 |
| 12021 | Green River Gas Co, Inc | | Oil & Gas Operator | Dec 2010 |
| 12022 | Green River Operating Co Inc | Noble, OK 73068-5521 | Oil & Gas Operator | Feb 2018 |
| 12023 | Green River Resources Inc. | Keystone, CO 80435 | Oil & Gas Operator | Feb 2026 |
| 12024 | Green Star | Somerset, TX 78069 | Oil Operator | Feb 2026 |
| 12025 | Green Valley Disposal Serv LLC | Alva, OK 73717 | Oil Operator | Nov 2025 |
| 12026 | Green Valley Operating, LLC | Billings, MT 59108 | Oil & Gas Operator | Nov 2025 |
| 12027 | Green Wells Venture LLC | Miami, FL 33131 | Gas Operator | Dec 2024 |
| 12028 | Green William G | Jenks, OK 74037-3233 | Oil & Gas Operator | Apr 2020 |
| 12029 | Green'S Drillng & Mud Ser Inc | Konawa, OK 74849 | Oil Operator | Jan 2013 |
| 12030 | Green, Bobbie | Chautauqua, KS 67334 | Oil Operator | Sep 2025 |
| 12031 | Green, Hugh | Albany, TX 76430 | Oil & Gas Operator | Apr 2012 |
| 12032 | Green, J. R. | Hays, KS 67601 | Oil Operator | Mar 2005 |
| 12033 | Green, Michael Oil | Albany, TX 76430 | Oil Operator | Feb 2026 |
| 12034 | Green, Robert W | Ottawa, KS 66067 | Oil Operator | Nov 1987 |
| 12035 | Green, Roy W. Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2021 |
| 12036 | Greenbriar Energy Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2004 |
| 12037 | Greenbrier Energy Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 12038 | Greenbrier Oper. Co. | Dallas, TX 75229 | Oil & Gas Operator | Feb 2001 |
| 12039 | Greene Energy LLC | Pittsburgh, PA 15241-1405 | Gas Operator | Dec 2006 |
| 12040 | Greene Enterprises, Inc. | Gillette, WY 82717 | Oil Operator | Dec 2009 |
| 12041 | Greene Mary E | Springboro, PA 16435-1635 | Oil & Gas Operator | Dec 2014 |
| 12042 | Greene, R. E. | Baird, TX 79504 | Oil & Gas Operator | Jun 2009 |
| 12043 | Greene, Sheldon K. | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 12044 | Greene, Steven | Le Roy, NY 14482 | Gas Operator | Dec 2024 |
| 12045 | Greene, Vernon | Levelland, TX 79336 | Oil & Gas Operator | May 2002 |
| 12046 | Greenfield Baptist CH | North East, PA 16428-5610 | Gas Operator | Dec 2024 |
| 12047 | Greenfields Operating LLC | Tulsa, OK 74114 | Oil Operator | Oct 2025 |
| 12048 | Greenhaw, Morris R Oil & Gas Inc | Desdemona, TX 76445 | Oil & Gas Operator | May 2006 |
| 12049 | Greenhaw, Morris R. | Desdemona, TX 76445 | Oil & Gas Operator | Feb 2026 |
| 12050 | Greenhead Energy Operating LLC | Oklahoma City, OK 73131 | Oil & Gas Operator | Nov 2025 |
| 12051 | Greenhill Petroleum Corporation | Houston, TX 77077 | Oil & Gas Operator | Jan 1998 |
| 12052 | Greenlake Energy Operating, LLC | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 12053 | Greenland Operating LLC | | Oil Operator | Oct 2025 |
| 12054 | Greenland Petroleum Co | Belle Valley, OH 43717 | Oil & Gas Operator | Dec 1991 |
| 12055 | Greenlee Oil And Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Sep 2025 |
| 12056 | Greenlight Enterprises LLC | McKinney, TX 75072 | Oil Operator | Feb 2026 |
| 12057 | Greenridge Oil Company LLC | Mill Valley, CA 94942 | Oil & Gas Operator | Dec 2024 |
| 12058 | Greenridge Oil Inc | New Freeport, PA 15352-1560 | Oil & Gas Operator | Dec 2024 |
| 12059 | Greensburg Energy, LLC | Greensburg, KY 42743 | Oil Operator | Dec 2023 |
| 12060 | Greensburg Oilfield LLC | Zenda, KS 67159 | Oil Operator | Nov 2013 |
| 12061 | Greenstone Energy, LLC | Houston, TX 77208 | Oil Operator | Feb 2026 |
| 12062 | Greenstreet Lloyd | | Oil Operator | Dec 1986 |
| 12063 | Greenville Land Development Co. | Elizabeth, WV 26143-0252 | Oil & Gas Operator | Dec 2021 |
| 12064 | Greenville Oil Company | Greenville, KY 42345 | Oil Operator | Dec 2023 |
| 12065 | Greenville Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Oct 1996 |
| 12066 | Greenway Energy LLC | Mayville, NY 14757 | Oil & Gas Operator | Dec 2024 |
| 12067 | Greenwerks Outdoor Services LLC | Stockdale, TX 78160 | Oil Operator | Feb 2026 |
| 12068 | Greenwich Oil Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 1994 |
| 12069 | Greenwood Energy Inc | Oklahoma City, OK 73116-9083 | Oil & Gas Operator | Mar 2015 |
| 12070 | Greenwood Holding Inc | Englewood, CO 80110 | Oil & Gas Operator | Jun 1993 |
| 12071 | Greenwood Holdings Inc | Englewood, CO BADADDR | Oil & Gas Operator | Jul 1995 |
| 12072 | Greenwood James W | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2014 |
| 12073 | Greenwood Janet | Mannford, OK 74044 | Oil Operator | Apr 2014 |
| 12074 | Greenwood Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2013 |
| 12075 | Greenwood Oil LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 12076 | Greenwood Resources | | Oil & Gas Operator | Jan 1992 |
| 12077 | Greenwood Resources L.L.C. | Pratt, KS 67124 | Oil Operator | Sep 2025 |
| 12078 | Greer & Beckham Gas Co Inc | Shamrock, TX 79079-0606 | Oil & Gas Operator | Aug 2013 |
| 12079 | Greer Energy, Inc. | | Oil Operator | Dec 1996 |
| 12080 | Greer Exploration Corporation | Shreveport, LA 71118 | Oil & Gas Operator | Jul 2017 |
| 12081 | Greer Family Trust | Ponca City, OK 74601-8126 | Oil Operator | Aug 2018 |
| 12082 | Greer Industries, Inc. | Morgantown, WV 26507-1900 | Gas Operator | Dec 2021 |
| 12083 | Greer Oil Compan | | Oil & Gas Operator | Jun 1988 |
| 12084 | Greer Tom & Welm | | Oil Operator | Mar 1995 |
| 12085 | Greer Tom R | Ponca City, OK 74602-2444 | Oil & Gas Operator | May 2013 |
| 12086 | Greer, Inc. | Arnoldsburg, WV 25234 | Oil & Gas Operator | Dec 2021 |
| 12087 | Greer, J. H. | Abilene, TX 79606 | Oil & Gas Operator | Dec 1998 |
| 12088 | Greer, Joseph V. | Yates Center, KS 66783 | Oil & Gas Operator | Oct 2005 |
| 12089 | Greer, Tom | Ponca City, OK 74602 | Oil Operator | Aug 2016 |
| 12090 | Greg Davis Investments Inc | Edmond, OK 73034-6621 | Oil Operator | May 2020 |
| 12091 | Greg Hall Oil & Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Oct 2025 |
| 12092 | Gregco, Inc. | Paducah, TX 79248 | Oil & Gas Operator | May 1999 |
| 12093 | Gregg Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 12094 | Gregg Price Corp | Dover, OH 44622 | Oil & Gas Operator | Dec 2014 |
| 12095 | Gregory, J. Russell Inc. | Houston, TX 77025 | Gas Operator | Nov 2009 |
| 12096 | Gregory, JD | | Oil & Gas Operator | Dec 2021 |
| 12097 | Greka Am Inc | Santa Maria, CA 93454 | Oil & Gas Operator | May 2013 |
| 12098 | Grenadier Energy Partners II,LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2020 |
| 12099 | Gresham Oil & Gas (USA) Inc. | Littleton, CO 80122 | Oil & Gas Operator | Jan 1999 |
| 12100 | Gress Oil & Gas | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2024 |