| 12001 | Gressel Production, LLC | South Haven, KS 67140 | Oil & Gas Operator | Oct 2024 |
| 12002 | Gressel, Dewey H. | | Oil Operator | Dec 2009 |
| 12003 | Greta Operating Company LLC | Refugio, TX 78377 | Oil & Gas Operator | May 2025 |
| 12004 | Grewing, Florence T. | Muenster, TX 76252 | Oil & Gas Operator | Mar 2008 |
| 12005 | Grewing, Herman | Muenster, TX 76252 | Oil & Gas Operator | Apr 1997 |
| 12006 | Grewing, Herman Operating, Inc. | Muenster, TX 76252 | Oil Operator | May 2025 |
| 12007 | Grewing, Wayne R. Oil & Gas, LLC | Muenster, TX 76252 | Oil Operator | Apr 2018 |
| 12008 | Grey Eagle Construction Company, Inc. | Kermit, WV 25674 | Gas Operator | Dec 2021 |
| 12009 | Grey Hawk Operating LLC | Birmingham, AL 35242 | Oil Operator | Jan 2024 |
| 12010 | Grey Oil Company | Pratt, KS 67124 | Oil & Gas Operator | Sep 2007 |
| 12011 | Grey Rider Energy, LLC | Schertz, TX 78154 | Oil & Gas Operator | May 2025 |
| 12012 | Grey Wolf Production Company, Inc. | Garnett, KS 66032-0426 | Oil Operator | Mar 2015 |
| 12013 | Grey, Glenn E. | Haviland, KS 67059 | Oil Operator | Mar 2002 |
| 12014 | Grey, Huey P. | Greensburg, KS 67054 | Oil Operator | Dec 1984 |
| 12015 | Grey, James H. | Greensburg, KS 67054 | Gas Operator | Nov 1988 |
| 12016 | Grey, Lonnie & Lennie Adams | Ravenna, KY 40472 | Oil Operator | Dec 2016 |
| 12017 | Greylock Conventional, LLC | Charleston, WV 25311 | Oil & Gas Operator | Mar 2025 |
| 12018 | Greylock Opco LLC | Charleston, WV 25311 | Oil & Gas Operator | Dec 2024 |
| 12019 | Greylock Production LLC | Charleston, WV 25311-1264 | Oil & Gas Operator | Mar 2025 |
| 12020 | Greystone Exploration Co | Oklahoma City, OK 73177 | Oil & Gas Operator | Apr 1996 |
| 12021 | Greystone Oil & Gas, LLP | Houston, TX 77057 | Oil & Gas Operator | Dec 2015 |
| 12022 | Greystone Operating, Inc. | | Oil & Gas Operator | Nov 2009 |
| 12023 | Greystone Petroleum, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2025 |
| 12024 | Greystone, Inc. | Hays, KS 67601 | Oil Operator | Jun 2019 |
| 12025 | Gribble Jr R W | Dallas, TX 75235 | Oil & Gas Operator | Apr 2014 |
| 12026 | Gribble Oil Company | | Oil & Gas Operator | Jun 1996 |
| 12027 | Gribble Oil Corporation | Dallas, TX 75235 | Oil Operator | Aug 1994 |
| 12028 | Griebel-Valliquette | Stroud, OK 74079-0231 | Oil & Gas Operator | Aug 2016 |
| 12029 | Griffin & Griffin Expl, LLC | | Oil & Gas Operator | Mar 2025 |
| 12030 | Griffin & Griffin Oil Co. Inc. | | Oil & Gas Operator | Jun 2001 |
| 12031 | Griffin & Griffin Oil Co., Inc Et Al | | Oil & Gas Operator | Jan 2010 |
| 12032 | Griffin Bennie C | Arora, CO 80011 | Gas Operator | Dec 1993 |
| 12033 | Griffin Energy | | Oil & Gas Operator | May 1991 |
| 12034 | Griffin Energy Holdings, LLC | Plano, TX 75093 | Oil Operator | May 2025 |
| 12035 | Griffin Management LLC | | Oil & Gas Operator | Feb 2010 |
| 12036 | Griffin Operating | | Oil & Gas Operator | Mar 1995 |
| 12037 | Griffin Operating, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Mar 2017 |
| 12038 | Griffin Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 12039 | Griffin Resources | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2003 |
| 12040 | Griffin Resources LLC | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 12041 | Griffin Resources, Inc. | | Oil & Gas Operator | Feb 2025 |
| 12042 | Griffin Southern Corp. | | Oil & Gas Operator | Jun 1983 |
| 12043 | Griffin Well Service Inc | Konawa, OK 74849-9710 | Oil & Gas Operator | Feb 2025 |
| 12044 | Griffin, Charles | Stafford, KS 67578 | Oil Operator | Sep 1997 |
| 12045 | Griffin, Charles N. | Pratt, KS 67124 | Oil & Gas Operator | Jan 2025 |
| 12046 | Griffis, Ronnie Et Al | Stephens, AR 71764 | Oil & Gas Operator | Sep 2024 |
| 12047 | Griffith Petroleum Services Inc | Kingston, OK 73439 | Oil & Gas Operator | Feb 2025 |
| 12048 | Griffith, Johnnie R. | O'Fallon, IL 62269 | Oil & Gas Operator | Dec 1996 |
| 12049 | Griffith, Michael P. | Falconer, NY 14733 | Gas Operator | Dec 2023 |
| 12050 | Griffith, Wesley | | Oil & Gas Operator | Jun 2000 |
| 12051 | Griffiths Oil LLC | Edgerton, WY 82635 | Oil Operator | Apr 2025 |
| 12052 | Griffon & Associates, L.L.C. | Pearland, TX 77581 | Oil & Gas Operator | Jul 2008 |
| 12053 | Griffon Petroleum, Inc. | Calgary, AB T2P 3K2 | Oil & Gas Operator | May 2007 |
| 12054 | Griggs Josh | Dewey, OK 74029 | Oil Operator | Feb 2025 |
| 12055 | Griggs Oil Incor | | Oil & Gas Operator | May 1994 |
| 12056 | Griggs Oil LLC | Dewey, OK 74029-0477 | Oil & Gas Operator | Feb 2025 |
| 12057 | Griggs, VIctor C. | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 12058 | Grigsby Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2025 |
| 12059 | Grigsby, Jack W. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2002 |
| 12060 | Grigsby-McCord Joint Account | | Oil Operator | Apr 1984 |
| 12061 | Grigsby-McCord Joint Acct Etal | | Oil Operator | Apr 1984 |
| 12062 | Grim Paul A | Logan, OH 43138-9445-9445 | Oil & Gas Operator | Dec 2020 |
| 12063 | Grimes Energy Company | Abilene, TX 79604 | Oil & Gas Operator | Mar 2005 |
| 12064 | Grimes, Norman W. | Canyon, TX 79015 | Oil & Gas Operator | Jul 2014 |
| 12065 | Grimm Assn. | | Oil & Gas Operator | Jul 2021 |
| 12066 | Grimsby Exploration Inc | Canton, OH 44709 | Oil & Gas Operator | Dec 2018 |
| 12067 | Grissom, Charles A. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2001 |
| 12068 | Griswold Energy LLC | Oologah, OK 74053-6228 | Oil Operator | Jan 2025 |
| 12069 | Grit Oil & Gas Management, LLC | Houston, TX 77055 | Oil & Gas Operator | May 2025 |
| 12070 | Grit Oil & Gas, LLC | Houston, TX 77072 | Oil & Gas Operator | Apr 2019 |
| 12071 | Grit Operating, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2023 |
| 12072 | Grizzle, Joe B. | Paris, TX 75461 | Oil & Gas Operator | May 2025 |
| 12073 | Grizzly Op Of Delaware, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2021 |
| 12074 | Grizzly Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 12075 | GRM LLC | | Oil & Gas Operator | Jun 2021 |
| 12076 | GRMR Oil And Gas LLC | Broomfield, CO 80021 | Oil & Gas Operator | Apr 2025 |
| 12077 | Gro-Tex Exploration | Abilene, TX 79603 | Oil Operator | May 2025 |
| 12078 | Grogan Field Production, L.L.C. | | Oil Operator | Jan 2025 |
| 12079 | Grooms T D | Stillwater, OK 74075-3600 | Oil & Gas Operator | Oct 2001 |
| 12080 | Grose, Raymond | Buckhannon, WV 26201-0736 | Oil & Gas Operator | Dec 2003 |
| 12081 | Groshong Oil, LLC | Wellsville, KS 66092 | Oil Operator | Jan 2025 |
| 12082 | Gross Jack L Production | Borger, TX 79008-0065 | Gas Operator | Mar 2015 |
| 12083 | Gross Todd | Pine Bluffs, WY 82082 | Oil & Gas Operator | Mar 2007 |
| 12084 | Gross William R | | Oil Operator | Feb 1986 |
| 12085 | Gross, Charles E. | Dallas, TX 75220 | Oil & Gas Operator | Feb 2012 |
| 12086 | Gross, L. Jack Production | Borger, TX 79008 | Oil & Gas Operator | Dec 1994 |
| 12087 | Grothe Bros. | Albany, TX 76430 | Oil & Gas Operator | May 2011 |
| 12088 | Grothe Bros., Inc. | Slaton, TX 79364 | Oil & Gas Operator | May 2025 |
| 12089 | Grothe, M. L. Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jun 2010 |
| 12090 | Grothe, M.L. Est. | Slaton, TX 79364 | Oil & Gas Operator | May 2025 |
| 12091 | Grothues, G B Oil | Natalia, TX 78059 | Oil Operator | May 2025 |
| 12092 | Ground Development Company Inc | Dallas, TX 75229-0377 | Oil & Gas Operator | Jan 2013 |
| 12093 | Ground Resources, LLC | | Oil & Gas Operator | Dec 2021 |
| 12094 | Group Maintenance Corp | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2012 |
| 12095 | Grover Collins | | Oil & Gas Operator | Dec 2002 |
| 12096 | Grover-McKinney Oil Company | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 12097 | Groves, Frank | Arkansas City, KS 67005 | Oil & Gas Operator | Mar 1995 |
| 12098 | GRR Mammoser Partnership | Eden, NY 14057 | Gas Operator | Dec 2023 |
| 12099 | GRS Oil & Gas Company | Irving, TX 75017 | Oil & Gas Operator | Aug 1994 |
| 12100 | Grubb F W "Forest" | Garber, OK 73738-0186 | Oil & Gas Operator | Jun 2005 |