| 101 | Herd Producing Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | May 2025 |
| 102 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 103 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 104 | Hurley Petroleum Corporation | Baton Rouge, LA 70821 | Oil & Gas Operator | Feb 2000 |
| 105 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | May 2025 |
| 106 | Jamex, Inc. | Lewisville, TX 75067 | Oil & Gas Operator | May 2025 |
| 107 | Janex Oil Co., Inc. | Dallas, TX 75219 | Oil & Gas Operator | Jun 2005 |
| 108 | Jeems Bayou Production Corp. | Oil City, LA 71061 | Oil & Gas Operator | May 2025 |
| 109 | Jones, Carl W. Operator | Shreveport, LA 71106 | Oil & Gas Operator | Jul 1999 |
| 110 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | May 2025 |
| 111 | Katy Resources LLC | Arlington, TX 76016 | Oil & Gas Operator | May 2025 |
| 112 | Kayuga Co. | Tulsa, OK 74133 | Oil & Gas Operator | May 2025 |
| 113 | KCS Resources LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 114 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 115 | Kelley Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Jan 2002 |
| 116 | Kids Future, L.L.C. | Bivins, TX 75555 | Oil Operator | May 2025 |
| 117 | Killingsworth Oil Co. | Longview, TX 75606 | Oil & Gas Operator | May 2025 |
| 118 | Kinder Morgan Tejas Pipeline LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 119 | King Operating Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | May 2025 |
| 120 | Kinlaw Oil Corporation | Dallas, TX 75380 | Oil & Gas Operator | May 2025 |
| 121 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 122 | KMK Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | May 2025 |
| 123 | Kraker & Martin Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 124 | L & R Petroleum | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 125 | Lake Ronel Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Jul 2017 |
| 126 | Layline Petroleum I, LLC | Houston, TX 77024 | Oil & Gas Operator | May 2013 |
| 127 | Linder, John G. Jr. | Gladewater, TX 75647 | Oil & Gas Operator | Apr 2005 |
| 128 | Linder, John Operating Co., LLC | Gladewater, TX 75647 | Oil & Gas Operator | May 2025 |
| 129 | Linn Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 130 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 131 | Linop Corporation | Austin, TX 78728 | Oil & Gas Operator | May 2025 |
| 132 | Lodi Drilling & Service Co. | Corpus Chrsti, TX 78426 | Oil & Gas Operator | May 2025 |
| 133 | Lodi Operating Company LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | May 2025 |
| 134 | Lorac, Inc. | Dallas, TX 75252 | Oil & Gas Operator | May 2025 |
| 135 | Lotex Exploration & Prod. Co. | Carrollton, TX 75006 | Oil & Gas Operator | Jul 2011 |
| 136 | Louisiana Energy Consultant Inc. | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 137 | Loutex Production Company | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 138 | M & M Oil Co., LLC | Oil City, LA 71061 | Oil & Gas Operator | May 2025 |
| 139 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | May 2025 |
| 140 | Manziel Interests | Tyler, TX 75711 | Oil & Gas Operator | Jun 2004 |
| 141 | Manziel Management Corporation | Tyler, TX 75711 | Oil Operator | Feb 2014 |
| 142 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Mar 2025 |
| 143 | Marion County Prod. Co., L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 144 | Martineau Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2025 |
| 145 | Matador Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Jul 2003 |
| 146 | Mayo, Eddie | Fredericksbrg, TX 78624 | Oil & Gas Operator | May 2025 |
| 147 | McBrayer Oil Corporation | Rockport, TX 78381 | Oil & Gas Operator | Nov 1994 |
| 148 | McDonald Resources, LLC | Jefferson, TX 75657 | Oil & Gas Operator | May 2025 |
| 149 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 150 | McKnight, C. L. | McLeod, TX 75565 | Oil & Gas Operator | May 2025 |
| 151 | McKnight, C. L. Oil Co. LLP | McLeod, TX 75565 | Oil & Gas Operator | May 2025 |
| 152 | McKnight, J. C. | Jefferson, TX 75657 | Oil & Gas Operator | Nov 2019 |
| 153 | McRae Exploration & Prod., Inc. | Houston, TX 77064 | Oil & Gas Operator | Feb 2017 |
| 154 | Mercury Operating, LLC | Dallas, TX 75208 | Oil & Gas Operator | May 2025 |
| 155 | MHM Oil Co. | Dallas, TX 75240 | Oil & Gas Operator | Oct 2002 |
| 156 | MHM Pipeline Co., Inc. | Dallas, TX 75252 | Oil & Gas Operator | May 2025 |
| 157 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 158 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 159 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2016 |
| 160 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | May 2025 |
| 161 | Moransco Energy Corporation | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 162 | Nadel And Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 163 | Nadel And Gussman, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 164 | Newman Corporation | Harleton, TX 75651 | Oil & Gas Operator | Aug 2024 |
| 165 | NFR Energy, LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2017 |
| 166 | Nolte, Mike E. | Longview, TX 75606 | Oil & Gas Operator | Jun 1995 |
| 167 | O'Benco, Inc. | Shreveport, LA 71136 | Oil & Gas Operator | May 2025 |
| 168 | Ocean Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 169 | Odegard Energy, Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2020 |
| 170 | Ok Oil Company, Inc. | Bivins, TX 75555 | Oil & Gas Operator | Feb 2013 |
| 171 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | May 2025 |
| 172 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | May 2025 |
| 173 | Panola Corporation, The | Dallas, TX 75252 | Oil & Gas Operator | Sep 2002 |
| 174 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | May 2025 |
| 175 | Peak Energy Corporation | Plano, TX 75093 | Oil & Gas Operator | Oct 2018 |
| 176 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 177 | Pegasi Energy Resources Corp | Tyler, TX 75710 | Oil & Gas Operator | Jul 2007 |
| 178 | Pegasi Operating Inc. | Jefferson, TX 75657 | Oil & Gas Operator | May 2025 |
| 179 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2025 |
| 180 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 181 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | May 2025 |
| 182 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 183 | Phillips, Jack L. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 1997 |
| 184 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jul 2024 |
| 185 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 186 | Poco LLC | Houston, TX 77270 | Oil & Gas Operator | May 2025 |
| 187 | Precise Development, Inc. | Austin, TX 78709 | Oil & Gas Operator | May 2005 |
| 188 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 189 | Prime Natural Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jun 2007 |
| 190 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | May 2025 |
| 191 | Psi Production, Inc. | Tyler, TX 75702 | Gas Operator | Jan 1994 |
| 192 | Quantum Resources Management LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2025 |
| 193 | Ramtex Energy LLC | Tulsa, OK 74114 | Oil & Gas Operator | May 2025 |
| 194 | Randall Exploration, LLC | Tulsa, OK 74136 | Oil Operator | May 2025 |
| 195 | Ratts, Robert V. Inc. | Bedford, TX 76021 | Oil & Gas Operator | Aug 2003 |
| 196 | Re-Op Corp. | Houston, TX 77274 | Oil & Gas Operator | May 2025 |
| 197 | Redman Operating Company | Houston, TX 77042 | Oil & Gas Operator | May 2008 |
| 198 | Regal Petroleum Services | Euless, TX 76039 | Oil & Gas Operator | Aug 2002 |
| 199 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | May 2025 |
| 200 | Rfe Operating, LLC | Tyler, TX 75703 | Oil & Gas Operator | May 2025 |