| 101 | Dunigan Petroleum, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 102 | Echo Production Inc | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 103 | El Ran, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Oct 2025 |
| 104 | Element Petroleum Op III, LLC | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 105 | En Geo, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Oct 2025 |
| 106 | Encore Energy Partners Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2015 |
| 107 | Encore Operating LP | Plano, TX 75024 | Oil & Gas Operator | May 2025 |
| 108 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 109 | Energen Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2021 |
| 110 | Energy Hunter Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Feb 2019 |
| 111 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | May 2025 |
| 112 | Engas XP, LLC | Wimberley, TX 78676 | Oil & Gas Operator | Oct 2025 |
| 113 | Estacado Energy, Inc. | Austin, TX 78716 | Oil & Gas Operator | Jul 1999 |
| 114 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 115 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 116 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Oct 2025 |
| 117 | F & M Oil & Gas Co | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 118 | Fasken Oil And Ranch, LTD. | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 119 | Fasken, Barbara | Midland, TX 79701 | Oil & Gas Operator | Dec 1995 |
| 120 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 121 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 122 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Oct 2025 |
| 123 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Oct 2025 |
| 124 | First Permian, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 125 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | Oct 2025 |
| 126 | Frost,Cyrus B.,Jr.& Fleming, WM. | Eastland, TX 76448 | Oil & Gas Operator | May 2004 |
| 127 | Fuller Operating Company | Lubbock, TX 79408 | Oil & Gas Operator | Mar 2008 |
| 128 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 129 | Grand Banks Energy Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2025 |
| 130 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 131 | Greene, Vernon | Levelland, TX 79336 | Oil & Gas Operator | May 2002 |
| 132 | Griffin Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 133 | Grizzly Op Of Delaware, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2021 |
| 134 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 135 | Hadaway Consult And Engineer,LLC | Canadian, TX 79014 | Oil & Gas Operator | Oct 2025 |
| 136 | Hall Energy Company LLC | Oklahoma City, OK 73120-5020 | Oil & Gas Operator | Jul 2022 |
| 137 | Halvey Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Oct 2004 |
| 138 | Hamman Oil & Refining Company | Houston, TX 77098 | Oil & Gas Operator | Oct 2025 |
| 139 | Hampton Resources Corporation | Houston, TX 77010 | Oil & Gas Operator | Mar 1996 |
| 140 | Hendrix, John H. Corporation | Midland, TX 79705 | Oil & Gas Operator | Sep 2018 |
| 141 | Henry Petroleum Corp. | Midland, TX 79703 | Oil & Gas Operator | Mar 2001 |
| 142 | Henry Resources LLC | Midland, TX 79703 | Oil & Gas Operator | Oct 2025 |
| 143 | Hexp Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 144 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Oct 2025 |
| 145 | Hodgden, Jack D. | Enid, OK 73702 | Oil & Gas Operator | Apr 2000 |
| 146 | Hughes Oil Company Inc | Odessa, TX 79765 | Oil & Gas Operator | Feb 2004 |
| 147 | Hunt Cimarron LTD. Partnership | Roswell, NM 88202 | Oil & Gas Operator | Oct 2025 |
| 148 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 149 | I & L Development Co. | Dallas, TX 75219 | Oil & Gas Operator | Mar 1996 |
| 150 | J & G Enterprise LTD., Co. | Artesia, NM 88211 | Oil & Gas Operator | Nov 1997 |
| 151 | J. F. G. Enterprises | Artesia, NM 88210 | Oil & Gas Operator | Apr 1995 |
| 152 | Jap Oil Corporation | Levelland, TX 79336 | Oil & Gas Operator | May 1994 |
| 153 | Jay Management Company LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 154 | JD Oil Company | Longview, TX 75605 | Oil & Gas Operator | Sep 2014 |
| 155 | Jil Oil Corp. | San Antonio, TX 78279 | Oil & Gas Operator | Oct 2025 |
| 156 | Jin Petroleum LLC | New Braunfels, TX 78130 | Oil Operator | Oct 2025 |
| 157 | JJ Operations, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Oct 2025 |
| 158 | Joplin Oil Co., Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Oct 2025 |
| 159 | Kala Oil Company | Sundown, TX 79372 | Oil & Gas Operator | Oct 2025 |
| 160 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | May 2025 |
| 161 | Kimbell Oil Company Of Texas | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 162 | Kimbell Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 163 | Kinney Incorporated | Andrews, TX 79714 | Oil & Gas Operator | Oct 2025 |
| 164 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 165 | KP Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1997 |
| 166 | Kynosa Inc. | Levelland, TX 79336 | Oil & Gas Operator | Jun 1998 |
| 167 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 168 | Landreth, Robert E. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 169 | Layton Enterprises, Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Apr 2007 |
| 170 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Oct 2025 |
| 171 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 172 | Lomak Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1998 |
| 173 | Lovelady, I. W. | Albuquerque, NM 87111 | Oil & Gas Operator | Jan 1996 |
| 174 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 175 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2025 |
| 176 | Lyon Operating Company Inc.(Iii) | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 177 | M & D Oil & Gas | Levelland, TX 79336 | Oil & Gas Operator | Aug 2000 |
| 178 | M.B.J. Operating | Argyle, TX 76226 | Oil & Gas Operator | Jun 2022 |
| 179 | Mammoth Exploration LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2023 |
| 180 | Manzano LLC | Roswell, NM 88202 | Oil & Gas Operator | Oct 2025 |
| 181 | Maralo, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1998 |
| 182 | Masada Development Company | Lubbock, TX 79416 | Oil & Gas Operator | Nov 2021 |
| 183 | Matador Operating, LLC | Lubbock, TX 79413 | Oil Operator | Oct 2024 |
| 184 | MBR Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2025 |
| 185 | McBee Company, The | Dallas, TX 75219 | Oil & Gas Operator | Dec 1997 |
| 186 | McCabe Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2009 |
| 187 | McClure Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 188 | McDaniel Company, Inc., The | Dallas, TX 75230 | Oil & Gas Operator | Oct 2025 |
| 189 | Melton, Joe, DRLG. Co., Inc. | Midland, TX 79704 | Oil & Gas Operator | Dec 2004 |
| 190 | Memorial Production Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 191 | Meridian Exploration Corp. | Pittsburgh, PA 15222 | Oil & Gas Operator | Dec 2021 |
| 192 | Meridian Oil Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 1996 |
| 193 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 194 | Mid Texas Natural Gas | Kyle, TX 78640 | Oil & Gas Operator | May 2019 |
| 195 | Midland Oil And Gas, Inc. | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 196 | Miltex Oil Company | Boerne, TX 78006 | Oil & Gas Operator | Oct 2025 |
| 197 | Mineral Technologies, Inc. | Midland, TX 79704 | Oil & Gas Operator | Oct 2025 |
| 198 | Miocene Oil & Gas, LTD. | Englewood, CO 80110 | Oil & Gas Operator | Oct 2025 |
| 199 | Miranda Energy Corporation | Midland, TX 79705 | Oil & Gas Operator | Jun 2016 |
| 200 | MJ Oil Company | Minerva, OH 44657 | Oil & Gas Operator | Dec 2008 |