| 101 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Jul 2025 |
| 102 | Flamingo Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Jul 2025 |
| 103 | Force 5 Energy, LLC | Houston, TX 77090 | Oil & Gas Operator | Dec 2018 |
| 104 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
| 105 | Forcenergy Onshore Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2012 |
| 106 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 107 | Frisco Energy, L.L.C. | Tulsa, OK 74105 | Oil & Gas Operator | May 2025 |
| 108 | Georgetown Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 1995 |
| 109 | Geosouthern Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Jul 2025 |
| 110 | Giant NRG Co., LP | Dallas, TX 75230 | Oil & Gas Operator | Jul 2025 |
| 111 | Golden Monet, Inc. | Bryan, TX 77805 | Oil & Gas Operator | Jul 2025 |
| 112 | Goldsmith Operating, LLC | Tyler, TX 75711 | Oil & Gas Operator | Jul 2025 |
| 113 | Goldsmith, J. Paul | Tyler, TX 75711 | Oil & Gas Operator | Feb 1997 |
| 114 | Goldsmith, Neta R. | Tyler, TX 75711 | Oil & Gas Operator | Dec 2009 |
| 115 | Great Western Onshore Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 116 | Greka Am Inc | Santa Maria, CA 93454 | Oil & Gas Operator | May 2013 |
| 117 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 118 | Gsi Oil & Gas, Inc. | Bryan, TX 77806 | Oil & Gas Operator | Jul 2025 |
| 119 | Gulf Bend Resources, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Sep 2016 |
| 120 | Halcon Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2025 |
| 121 | Halex Oil Corporation | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 122 | Hampton Resources Corporation | Houston, TX 77010 | Oil & Gas Operator | Mar 1996 |
| 123 | Harken Exploration Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2008 |
| 124 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 125 | Hawkwood Energy Operating, LLC | Houston, TX 77224 | Oil & Gas Operator | Apr 2022 |
| 126 | Hemus, Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1994 |
| 127 | HK Energy Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 128 | Hoc Operating Co., Inc. | Houston, TX 77056 | Oil & Gas Operator | Nov 1999 |
| 129 | Holley Oil Company, LLC | Chappell Hill, TX 77426 | Oil & Gas Operator | Jul 2025 |
| 130 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 131 | Houston Hydrocarbons, Inc. (A) | Houston, TX 77042 | Oil & Gas Operator | Sep 2004 |
| 132 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 133 | Hydrogeo, L.L.C. | Houston, TX 77074 | Oil & Gas Operator | Jul 2025 |
| 134 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 135 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 136 | J.F.W. Equipment, Inc. | Centerville, TX 75833 | Oil & Gas Operator | Jul 2025 |
| 137 | Joy Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Jul 2025 |
| 138 | JTL Operating Co Inc | Katy, TX 77450 | Oil & Gas Operator | Jul 2025 |
| 139 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 140 | Kouatli, Aiman M. | Caldwell, TX 77836 | Oil & Gas Operator | Jul 2025 |
| 141 | L & R Petroleum | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 142 | Lamay Corporation | Rosenberg, TX 77471 | Oil & Gas Operator | Jul 2025 |
| 143 | Lapco Oil & Gas Company | Houston, TX 77069 | Oil & Gas Operator | Oct 2015 |
| 144 | Latigo Petroleum Texas, LP | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 145 | Llewellin Operating Company, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2017 |
| 146 | Loin Energy Corporation | La Grange, TX 78945 | Oil & Gas Operator | Jul 2025 |
| 147 | Longhorn Oil Properties, Inc. | Pottsboro, TX 75076 | Oil & Gas Operator | Jul 2025 |
| 148 | Lucas Energy, Inc. | Houston, TX 77067 | Oil & Gas Operator | Feb 2017 |
| 149 | M. P. S. Prod. Co. | Houston, TX 77225 | Oil & Gas Operator | Dec 1996 |
| 150 | M.B. Properties, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Oct 1995 |
| 151 | Magnolia Oil & Gas Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Jul 2025 |
| 152 | Manti Exploration Operating LLC | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Feb 2015 |
| 153 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | May 2025 |
| 154 | Martineau Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2025 |
| 155 | McBee Operating Company, L.L.C. | Dallas, TX 75209 | Oil & Gas Operator | Jul 2025 |
| 156 | McCulliss Resources Co Inc | Littleton, CO 80161-3248 | Oil & Gas Operator | Jun 2009 |
| 157 | McDaniel Company, Inc., The | Dallas, TX 75230 | Oil & Gas Operator | Jul 2025 |
| 158 | McDonald Production | Lubbock, TX 79408 | Oil & Gas Operator | Mar 2003 |
| 159 | MD America Energy, LLC | Houston, TX 77224 | Oil & Gas Operator | Apr 2022 |
| 160 | Medallion Petroleum, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2015 |
| 161 | Medallion Production Company | Tulsa, OK 74103 | Oil & Gas Operator | May 1997 |
| 162 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Jul 2025 |
| 163 | Midcoast G & P (East Texas) L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 164 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 165 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 166 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 167 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Jul 2025 |
| 168 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 169 | Murphy, K. P. Oil Operator | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 170 | Navidad Resources, LLC | Bullard, TX 75757 | Oil & Gas Operator | Jul 2025 |
| 171 | New Gulf Resources, LLC | Tulsa, OK 74133 | Oil & Gas Operator | May 2018 |
| 172 | Newfield Exploration Company | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2017 |
| 173 | Newstar Energy Of Texas L.L.C. | East Lansing, MI 48826 | Oil & Gas Operator | Mar 2008 |
| 174 | Nitschke, Dan E. | Henrietta, TX 76365 | Oil & Gas Operator | Jul 2025 |
| 175 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 176 | Noel Operating, Inc. | Huntsville, TX 77340 | Oil & Gas Operator | Oct 2000 |
| 177 | NZ Operating Company Inc. | Houston, TX 77069 | Oil & Gas Operator | Jul 2025 |
| 178 | Ocean Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 179 | Odegard Energy, Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2020 |
| 180 | Ogden Resources Corporation | Bryan, TX 77802 | Oil & Gas Operator | Jul 2025 |
| 181 | Ogden Resources, LTD. | Bryan, TX 77802 | Oil & Gas Operator | Feb 2009 |
| 182 | Olipdp II, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Jul 2025 |
| 183 | Omimex Energy, Inc. | Fort Worth, TX 76120 | Oil & Gas Operator | Jan 2025 |
| 184 | Opex Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Mar 2008 |
| 185 | Oro Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Jul 2025 |
| 186 | Ows Energy, Inc. | Montgomery, TX 77356 | Oil & Gas Operator | Jul 2025 |
| 187 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jul 2025 |
| 188 | Pardus Oil & Gas Operating, LP | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2022 |
| 189 | Parten Oil Co. | Houston, TX 77060 | Oil & Gas Operator | Jan 1994 |
| 190 | Parten Operating Inc. | Houston, TX 77069 | Oil & Gas Operator | Jul 2025 |
| 191 | Partners Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Aug 1995 |
| 192 | Patara Oil & Gas LLC | Dallas, TX 75219 | Oil & Gas Operator | Mar 2018 |
| 193 | Pathfinder Capital L.C. | Dallas, TX 75219 | Oil Operator | Mar 2008 |
| 194 | Patriot E & P Company | Tyler, TX 75710 | Oil & Gas Operator | Aug 2004 |
| 195 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 196 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 197 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 198 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | May 2025 |
| 199 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 200 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |