| 12101 | Grubb Ronald J | Clinton, OK 73601-0906 | Oil & Gas Operator | Aug 2013 |
| 12102 | Gruenerwald WM & | | Oil & Gas Operator | Apr 1994 |
| 12103 | Gruenerwald WM & Assoc Inc | Colorado Spring, CO 80960-0669 | Oil & Gas Operator | Jan 2002 |
| 12104 | Grunder Oil, LLC | St John, KS 67576 | Oil Operator | Jan 2025 |
| 12105 | Gruss Petroleum | | Oil Operator | Jan 1986 |
| 12106 | Gruy Management Service Co. | | Oil & Gas Operator | Apr 1982 |
| 12107 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 12108 | Grynberg Petroleum Company | Greenwood Vge, CO 80111-3326 | Oil & Gas Operator | Oct 2019 |
| 12109 | Grynberg* Jack Dba Grynberg Petroleum Co | | Oil & Gas Operator | Jan 2023 |
| 12110 | Grynberg, Jack J. | Denver, CO 80237 | Oil & Gas Operator | Jun 2021 |
| 12111 | Gryphon Exploration Company | Mandeville, LA 70471 | Oil & Gas Operator | Aug 2009 |
| 12112 | GS Energy Of Texas, L.L.C. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2006 |
| 12113 | GSF Energy, L.L.C. | Pittsburgh, PA 15220 | Gas Operator | Mar 2018 |
| 12114 | Gsi Oil & Gas, Inc. | Bryan, TX 77806 | Oil & Gas Operator | May 2025 |
| 12115 | GT Energy | | Oil & Gas Operator | Mar 1993 |
| 12116 | GT Productions | Euless, TX 76040 | Oil & Gas Operator | Jan 1997 |
| 12117 | GTG Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | May 2025 |
| 12118 | Guadalupe Operating LLP | Midland, TX 79701 | Oil & Gas Operator | Oct 2013 |
| 12119 | Guadalupe Properties, LLC | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2013 |
| 12120 | Guaranty Energy Corporation | | Oil & Gas Operator | Aug 1990 |
| 12121 | Guardian Energy Consultants, Inc. | Tulsa, OK 74120 | Gas Operator | Sep 2009 |
| 12122 | Guardian Exploration LLC | Hunt, TX 78024-0225 | Oil & Gas Operator | Dec 2011 |
| 12123 | Guardian Management Inc | Marion, OH 43302 | Oil & Gas Operator | Dec 1997 |
| 12124 | Guardian Oil Company | | Oil & Gas Operator | Aug 1985 |
| 12125 | Guardian Operating Corp. | Midland, TX 79707 | Oil & Gas Operator | Nov 2016 |
| 12126 | Guenthart William & Lavonne | Newcastle, WY 82701 | Oil Operator | Dec 2024 |
| 12127 | Guernsey Petroleum Corp Of MS | | Oil Operator | Jul 1988 |
| 12128 | Guernsey Petroleum Corporation | Atlanta, GA 30318 | Oil & Gas Operator | Nov 1997 |
| 12129 | Guernsey/Rosbottom | | Oil Operator | Apr 1989 |
| 12130 | Guest Petroleum Incorporated | Edmond, OK 73013 | Oil & Gas Operator | Mar 2025 |
| 12131 | Guest R E Oil Producer | Edmond, OK 73083-0805 | Oil & Gas Operator | Mar 2015 |
| 12132 | Guffey & Galey | | Oil & Gas Operator | Aug 1981 |
| 12133 | Guffey, Roy, Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2011 |
| 12134 | Guffey, WM. R. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2015 |
| 12135 | Gugli Corporation | Byng, OK 74820 | Oil & Gas Operator | Sep 2014 |
| 12136 | Guidance Oil Developers | Boerne, TX 78006 | Oil & Gas Operator | May 2025 |
| 12137 | Guidance Oil Developers, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Mar 2008 |
| 12138 | Guidance Oil Developers,Inc.(1) | Boerne, TX 78006 | Oil Operator | May 2025 |
| 12139 | Guido & Arnold | | Oil & Gas Operator | Feb 1982 |
| 12140 | Guido Energy Co & Guernsey Pet | | Oil Operator | Aug 1991 |
| 12141 | Guido Production Co Inc | | Oil Operator | May 1995 |
| 12142 | Guidon Energy MGMT Services LLC | Irving, TX 75062 | Oil & Gas Operator | Dec 2020 |
| 12143 | Guidry, J.R. | High Island, TX 77623 | Oil Operator | May 2025 |
| 12144 | Guin, Don L. | Flint, TX 75762 | Oil & Gas Operator | Apr 2018 |
| 12145 | Guinn David E | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2025 |
| 12146 | Guinn Investments, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2018 |
| 12147 | Guinn Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Sep 2024 |
| 12148 | Guinn Operating Company | Spring Branch, TX 78070 | Oil & Gas Operator | Feb 2014 |
| 12149 | Guinn Operating Company, LLC | San Antonio, TX 78260 | Oil Operator | May 2025 |
| 12150 | Guinotte Company LLC | Ottawa, KS 66067 | Oil Operator | Dec 2009 |
| 12151 | Gulf Bend Resources, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Sep 2016 |
| 12152 | Gulf Central Petroleum Corp. | Dallas, TX 75252 | Oil & Gas Operator | May 2025 |
| 12153 | Gulf Coast Crude O&G Co., Inc. | | Oil & Gas Operator | May 1982 |
| 12154 | Gulf Coast Energy, Co. | Alvin, TX 77511 | Oil & Gas Operator | Apr 2021 |
| 12155 | Gulf Coast Mineral, LLC | Foley, AL 36535 | Oil & Gas Operator | Jul 2021 |
| 12156 | Gulf Coast Operations, LLC | Farmers BRNCH, TX 75234 | Oil & Gas Operator | May 2025 |
| 12157 | Gulf Energy Corporation | Denver, CO 80237 | Oil & Gas Operator | Jun 1987 |
| 12158 | Gulf Energy Exploration Corp. | Austin, TX 78716 | Gas Operator | May 2025 |
| 12159 | Gulf Exploration Company, Inc. | | Oil & Gas Operator | Dec 2024 |
| 12160 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2025 |
| 12161 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 12162 | Gulf Outlet Resources, L.L.C. | | Oil & Gas Operator | Apr 2008 |
| 12163 | Gulf Pine Energy, LP | | Oil & Gas Operator | Feb 2025 |
| 12164 | Gulf Production Company, Inc. | | Oil & Gas Operator | Dec 2024 |
| 12165 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 12166 | Gulf Refining Co. | | Oil Operator | Dec 2006 |
| 12167 | Gulf Shore Petro. Oper. Co., Inc | Woodland HLS, CA 91367 | Oil & Gas Operator | Apr 1998 |
| 12168 | Gulf South Minerals, Inc. | | Oil Operator | Nov 1993 |
| 12169 | Gulf South Oil & Gas, Inc. | | Oil & Gas Operator | Feb 1990 |
| 12170 | Gulf South Operators, Inc. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2015 |
| 12171 | Gulf South Pipeline Company, LLC | | Oil & Gas Operator | Jan 2025 |
| 12172 | Gulf South Pipeline Company, LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2020 |
| 12173 | Gulf States Exploration Co. | | Oil & Gas Operator | Dec 1983 |
| 12174 | Gulf States Petro. Corp. | Dallas, TX 75202 | Oil & Gas Operator | Apr 2006 |
| 12175 | Gulf States Pipeline Corp. | | Oil & Gas Operator | May 2003 |
| 12176 | Gulf States Production Company | Houston, TX 77027 | Oil & Gas Operator | Aug 1997 |
| 12177 | Gulf Tech Energy LLC | | Oil & Gas Operator | Dec 2002 |
| 12178 | Gulf Tide Oil Company, The | Houston, TX 77008 | Oil & Gas Operator | Jun 1999 |
| 12179 | Gulfland Resources, Inc. | | Oil & Gas Operator | Aug 1996 |
| 12180 | Gulfport Appalachia LLC | Oklahoma City, OK 73114-2640 | Oil & Gas Operator | Dec 2024 |
| 12181 | Gulfport Energy Corporation | Oklahoma City, OK 73134-5003 | Oil & Gas Operator | Feb 2025 |
| 12182 | Gulfport Midcon LLC | Oklahoma City, OK 73114-8132 | Oil & Gas Operator | Mar 2025 |
| 12183 | Gulfport Oil & Gas Inc. | Gulfport, MS 39501 | Oil & Gas Operator | May 2025 |
| 12184 | Gulfstar Energy Group, LLC | Caneyville, KY 42721 | Oil & Gas Operator | Dec 2023 |
| 12185 | Gulfstar Properties, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | May 2025 |
| 12186 | Gulfstream Of Louisiana, Inc. | | Oil & Gas Operator | Jan 1996 |
| 12187 | Gulfstream Petroleum Corp. | | Oil & Gas Operator | Feb 2002 |
| 12188 | Gulfstream Resources, Inc. | | Oil & Gas Operator | May 1996 |
| 12189 | Gulftex Energy II, LP | San Antonio, TX 78258 | Oil & Gas Operator | Jan 2013 |
| 12190 | Gulftex Energy III, LP | San Antonio, TX 78257 | Oil & Gas Operator | Jul 2018 |
| 12191 | Gulftex Energy IV, LP | San Antonio, TX 78257 | Oil & Gas Operator | Jul 2019 |
| 12192 | Gulftex Energy, LLC | San Antonio, TX 78257 | Oil & Gas Operator | May 2025 |
| 12193 | Gulftex Operating Inc | Plano, TX 75093 | Oil & Gas Operator | May 2025 |
| 12194 | Gulick Drilling , Inc. | Eureka, KS 67045 | Oil Operator | Jan 2025 |
| 12195 | Gumfory, Shawn | Iola, KS 66749 | Oil Operator | Jul 1998 |
| 12196 | Gungoll Carl E Estate | Oklahoma City, OK 73154-0466 | Oil & Gas Operator | Aug 2000 |
| 12197 | Gungoll Henry H. Associates | Enid, OK 73701 | Oil & Gas Operator | Jan 2024 |
| 12198 | Gungoll, Carl E. Exploration LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2025 |
| 12199 | Gunkel Charley Wayne Rev Inter VIvos Trust | Schulter, OK 74460-0010 | Gas Operator | Dec 2015 |
| 12200 | Gunn And Divers | Mount Zion, WV 26151 | Oil & Gas Operator | Dec 2021 |