| 12001 | Gunner Energy Corp. | Troy, MI 48083 | Oil & Gas Operator | Jun 1995 |
| 12002 | Gunner Oil Company | Wichita, KS 67205 | Oil & Gas Operator | Jul 2024 |
| 12003 | Gunnison Energy Corporation | | Oil & Gas Operator | Jun 2014 |
| 12004 | Gunnison Energy LLC | | Oil & Gas Operator | Aug 2024 |
| 12005 | Gunsight Energy Inc | Floydada, TX 79235-2521 | Oil Operator | Jun 2009 |
| 12006 | Gunsight Supply Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Aug 2003 |
| 12007 | Gunsmoke Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | May 2012 |
| 12008 | Gunter Jim | Springer, OK 73458 | Oil Operator | Aug 2024 |
| 12009 | Gupton Gas Co. | Fort Worth, TX 76107 | Oil & Gas Operator | Aug 1994 |
| 12010 | Gurley Oil Co | Kirtland, NM 87417 | Oil Operator | Dec 1995 |
| 12011 | Gurnee Gas Co., L.L.C. | | Gas Operator | Jul 2001 |
| 12012 | Gus Jones Cable Tool Service, LLC | Elk City, KS 67344 | Oil Operator | Jul 2024 |
| 12013 | Gusher Oil | | Oil Operator | Jul 2004 |
| 12014 | Gustafson Brothers Inc. | | Oil & Gas Operator | Dec 2002 |
| 12015 | Gustafson Family Trust 2 | Frewsburg, NY 14738 | Gas Operator | Dec 2023 |
| 12016 | Gustafson, Alan | Falconer, NY 14733 | Gas Operator | Dec 2023 |
| 12017 | Gustison Steven | | Oil Operator | Feb 1985 |
| 12018 | Guthrie Clare L And June | | Oil Operator | Nov 2021 |
| 12019 | Guthrie Oil Co | | Oil Operator | Nov 1994 |
| 12020 | Guthrie Oil Comp | | Oil & Gas Operator | Dec 1994 |
| 12021 | Guthrie, A. K. Operating Co. | Big Spring, TX 79720 | Oil & Gas Operator | Mar 1996 |
| 12022 | Guynes And Backus | | Oil Operator | Nov 1999 |
| 12023 | Guys Oil & Gas LTD Co | Hobbs, NM 88241 | Oil & Gas Operator | Dec 2019 |
| 12024 | Guzman Energy Inc. | | Oil & Gas Operator | Sep 2024 |
| 12025 | GVC Ventures | Mineola, TX 75773 | Oil & Gas Operator | Aug 2024 |
| 12026 | GW Energy, Inc. | Midland, TX 79710 | Oil Operator | Nov 2024 |
| 12027 | GW Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1993 |
| 12028 | GWB Oil & Gas LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2023 |
| 12029 | Gwet, Inc. | Merkel, TX 79536 | Oil Operator | Nov 2024 |
| 12030 | Gwitt, Edward J. | Eden, NY 14057 | Gas Operator | Dec 2023 |
| 12031 | GWM Operating Company, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | Nov 2024 |
| 12032 | Gyb-Britlind Oil, LLC | | Oil & Gas Operator | Jun 2016 |
| 12033 | Gypsy Exploration LLC | Oklahoma City, OK 73123-1323 | Oil & Gas Operator | Dec 2014 |
| 12034 | Gypsy Highview Gathering System, Inc. | Cut Bank, MT 59427-0250 | Oil & Gas Operator | Oct 2000 |
| 12035 | Gypsy Oil Co. | Austin, TX 78720 | Oil & Gas Operator | Jul 2017 |
| 12036 | Gypsyglenn Oil Company LLC | Tulsa, OK 74119-4809 | Oil & Gas Operator | Sep 2024 |
| 12037 | Gyro Petroleum | Amarillo, TX 79120 | Oil & Gas Operator | Nov 2024 |
| 12038 | H & A Drilling | Newark, OH 43056 | Oil Operator | Dec 2023 |
| 12039 | H & B Petroleum Corp. | Hutchinson, KS 67504 | Oil & Gas Operator | Jul 2024 |
| 12040 | H & B Production | | Oil Operator | Mar 1995 |
| 12041 | H & B Well Service, Inc. | | Oil & Gas Operator | Aug 1993 |
| 12042 | H & C Oil Operat | | Oil & Gas Operator | Dec 1996 |
| 12043 | H & C Oil Operating Inc. | Plainville, KS 67663 | Oil & Gas Operator | Jul 2024 |
| 12044 | H & D Drilling Co Inc | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 2023 |
| 12045 | H & D Exploration LLC | Hoisington, KS 67544 | Oil & Gas Operator | Jul 2024 |
| 12046 | H & D Operating Company | Refugio, TX 78377 | Oil & Gas Operator | May 2015 |
| 12047 | H & H & S Oil Producers | | Oil Operator | Jun 2024 |
| 12048 | H & H Compressors, Inc. | | Oil & Gas Operator | Oct 1997 |
| 12049 | H & H Drilling Company | Davis, OK 73030-2703 | Oil & Gas Operator | May 2014 |
| 12050 | H & H Energy Inc | Tuttle, OK 73089 | Oil Operator | May 2001 |
| 12051 | H & H Energy Of Ohio LTD | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2023 |
| 12052 | H & H Exploration | Tulsa, OK 74132 | Oil & Gas Operator | Jan 2006 |
| 12053 | H & H Oil Co. | | Oil & Gas Operator | Jul 2024 |
| 12054 | H & H Oil Co. #1 | | Oil Operator | Jul 2024 |
| 12055 | H & H Oil Compan | | Oil & Gas Operator | Aug 1995 |
| 12056 | H & H Oil Company, A General Partnership | Plainville, KS 67663 | Oil Operator | Feb 1997 |
| 12057 | H & H Oil Producers | | Oil & Gas Operator | Jun 2024 |
| 12058 | H & H Oil Productions | Tulsa, OK 74145 | Oil Operator | Jul 1999 |
| 12059 | H & H Oil, LLC | Lincolnville, KS 66858 | Oil Operator | Jul 2024 |
| 12060 | H & H Operating | Olney, TX 76374 | Oil & Gas Operator | Nov 2024 |
| 12061 | H & H Production | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2015 |
| 12062 | H & H Production Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2005 |
| 12063 | H & H Production, Inc. | Topeka, KS 66614 | Oil Operator | May 1997 |
| 12064 | H & H Star Energy Inc | Traverse City, MI 49684 | Oil & Gas Operator | Aug 2016 |
| 12065 | H & H Supply Inc | | Gas Operator | Mar 1985 |
| 12066 | H & K Energy Corp | Columbus, OH 43229 | Oil & Gas Operator | Dec 1991 |
| 12067 | H & K Oil Company | Kilgore, TX 75662 | Oil & Gas Operator | Nov 1998 |
| 12068 | H & K Oil Company (A) | Luling, TX 78648 | Oil Operator | Nov 2024 |
| 12069 | H & L Disposal Wells Inc | Beaver, OK 73932-1195 | Oil Operator | Dec 2012 |
| 12070 | H & L Exploration Company, LLC | Amarillo, TX 79114 | Oil & Gas Operator | Nov 2024 |
| 12071 | H & L Gas Co. | Sunray, TX 79086 | Gas Operator | Apr 2018 |
| 12072 | H & L Operating Co LLP | Amarillo, TX 79114 | Oil & Gas Operator | Aug 2022 |
| 12073 | H & L Operating Co., LLC | Amarillo, TX 79114 | Oil & Gas Operator | Mar 2021 |
| 12074 | H & L Operating Company | Amarillo, TX 79114 | Oil & Gas Operator | Feb 2020 |
| 12075 | H & L Operators | | Oil & Gas Operator | Dec 2002 |
| 12076 | H & L Oprerating Company LLP | Amarillo, TX 79114 | Oil & Gas Operator | Nov 2019 |
| 12077 | H & M Oil Producers | Littleton, CO 80160 | Oil & Gas Operator | Apr 2000 |
| 12078 | H & M Packers Serv. L.L.C. | | Oil Operator | Dec 2019 |
| 12079 | H & M Petroleum Corporation | Lincoln, NE 68516 | Oil & Gas Operator | Aug 2024 |
| 12080 | H & M Productions L.L.C. | Overland Park, KS 66210 | Oil Operator | May 1998 |
| 12081 | H & M Resources LLC | Dallas, TX 75225 | Oil & Gas Operator | Nov 2024 |
| 12082 | H & O Oil Co. | | Oil & Gas Operator | Dec 1989 |
| 12083 | H & O Operating Co | Odessa, TX 79764 | Oil & Gas Operator | Mar 2008 |
| 12084 | H & P Exploration Co. | Alice, TX 78333 | Oil & Gas Operator | May 2019 |
| 12085 | H & P Partnership | La Vernia, TX 78121 | Oil Operator | Nov 2024 |
| 12086 | H & R Exploratio | | Oil Operator | Feb 1992 |
| 12087 | H & R Exploration & Production, Inc. | Sidney, NE 69162 | Oil Operator | May 2007 |
| 12088 | H & R Oil Company | | Oil & Gas Operator | Dec 2000 |
| 12089 | H & R Well Services, Inc. | FT Morgan, CO 80701 | Oil & Gas Operator | Apr 2015 |
| 12090 | H & S Drilling Co Inc | Frazeysburg, OH 43822-0040-0040 | Oil & Gas Operator | Dec 2016 |
| 12091 | H & S Investments LLC | Fairview, PA 16415-1807 | Oil & Gas Operator | Dec 2023 |
| 12092 | H & S Oil Co., LLC | Cherryvale, KS 67335 | Oil Operator | Jul 2024 |
| 12093 | H & S Oil LLC | Roswell, NM 882022387 | Oil & Gas Operator | Jul 2013 |
| 12094 | H & S Operating Co., Inc. | Winesburg, OH 44690 | Oil & Gas Operator | Dec 2023 |
| 12095 | H & S Production | Farmington, NM 87401 | Oil Operator | Dec 2007 |
| 12096 | H & S Production, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Mar 2004 |
| 12097 | H & T Brock Oil Company LLC | Comanche, OK 73529-7140 | Oil & Gas Operator | Feb 2024 |
| 12098 | H & T Disposal | Abilene, TX 79608 | Oil Operator | Apr 2003 |
| 12099 | H & T Exploration, Inc. | Longview, TX 75605 | Oil & Gas Operator | Nov 2024 |
| 12100 | H & T Oil & Gas Company, Inc. | Alice, TX 78333 | Oil & Gas Operator | Mar 2008 |