| 101 | Energy Xxi Onshore, LLC | | Oil & Gas Operator | Dec 2023 |
| 102 | Energyquest II, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2024 |
| 103 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 104 | Enlink Lig, LLC | | Oil Operator | Jul 2024 |
| 105 | Entex Petroleum, Inc. | Oklahoma City, OK 73113 | Oil & Gas Operator | Nov 1997 |
| 106 | Entex, Inc. | | Oil & Gas Operator | Dec 1984 |
| 107 | Exchange Oil & Gas Company | | Oil & Gas Operator | Oct 1996 |
| 108 | Exchange Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1987 |
| 109 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 110 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Nov 2024 |
| 111 | Fieldwood Energy Offshore LLC | Houston, TX 77042 | Oil & Gas Operator | Nov 2024 |
| 112 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 113 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Nov 2024 |
| 114 | Flynn Energy Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Mar 1993 |
| 115 | FMP Operating Co., LTD. PTN. | | Oil & Gas Operator | Mar 1990 |
| 116 | Forcenergy Gas Exploration Inc. | Miami, FL 33129 | Oil & Gas Operator | Aug 1996 |
| 117 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
| 118 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 119 | Franks & Petrofunds, Inc. | | Oil & Gas Operator | Sep 1989 |
| 120 | Franks - Arkla | | Oil & Gas Operator | Jun 1985 |
| 121 | Franks Petroleum Inc. | | Oil & Gas Operator | Nov 1994 |
| 122 | Fredonia Resources Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2003 |
| 123 | French Production Incorporated | Houston, TX 77086 | Oil & Gas Operator | Dec 1997 |
| 124 | Gary-Williams Production Company | Denver, CO 80202 | Oil & Gas Operator | May 2000 |
| 125 | General American Oil Co Of TX | | Oil & Gas Operator | Jun 1983 |
| 126 | General Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 127 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 128 | Geodyne Resources Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 129 | George D. Hartfield Oil & Gas, Inc. | | Oil & Gas Operator | Jul 2024 |
| 130 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 131 | Getty Reserve Oil, Inc. | White Plains, NY 10650 | Oil & Gas Operator | Mar 2005 |
| 132 | Goldking Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jun 2007 |
| 133 | Goldking Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 134 | Goodrich Petroleum Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2022 |
| 135 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 136 | Graham Energy LTD | Houston, TX 77024 | Oil & Gas Operator | Mar 1994 |
| 137 | Graham Exploration, LTD. | | Oil & Gas Operator | Oct 1993 |
| 138 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 139 | Graham-McCormick Oper. PRTSHP. | | Oil & Gas Operator | Aug 1989 |
| 140 | Grease Exploration Incorporated | | Oil & Gas Operator | May 2024 |
| 141 | Grigsby Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2024 |
| 142 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 143 | Gulf Exploration Company, Inc. | | Oil & Gas Operator | Jun 2024 |
| 144 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 145 | Gulf Production Company, Inc. | | Oil & Gas Operator | Jul 2024 |
| 146 | Gulf South Operators, Inc. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2015 |
| 147 | Gulf South Pipeline Company, LLC | | Oil & Gas Operator | Jul 2024 |
| 148 | Gulf South Pipeline Company, LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2020 |
| 149 | Gulfport Energy Corporation | Oklahoma City, OK 73134-5003 | Oil & Gas Operator | Apr 2024 |
| 150 | Harbert Energy Corp | Irving, TX 75015-2510 | Oil & Gas Operator | Feb 1993 |
| 151 | Harbert Energy Corp/Gulf Coast | | Oil & Gas Operator | Dec 1991 |
| 152 | Hassie Hunt Expl. Company | Dallas, TX 75201 | Oil & Gas Operator | Aug 2008 |
| 153 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 154 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 155 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 156 | Hess Corporation, A De Corp. | | Oil & Gas Operator | Oct 2006 |
| 157 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Nov 2024 |
| 158 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 159 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Nov 2024 |
| 160 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 161 | Hubco Exploration Inc. | Houston, TX 77073 | Oil & Gas Operator | Sep 2002 |
| 162 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 163 | Hunt Petroleum Corporation | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 164 | Hy-Mark Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
| 165 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Nov 2024 |
| 166 | Jack W. Grigsby | | Oil & Gas Operator | Sep 2001 |
| 167 | JZJ Corporation | | Oil Operator | May 2010 |
| 168 | Kanan Oil & Gas, Inc. | | Oil & Gas Operator | Oct 1987 |
| 169 | Kansas Oil & Gas Corporation | Woodland HLS, CA 91367 | Oil & Gas Operator | Feb 2001 |
| 170 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2010 |
| 171 | Kelley Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Jan 2002 |
| 172 | Kem Ventures, LP | Katy, TX 77450 | Oil & Gas Operator | Sep 2024 |
| 173 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Sep 2024 |
| 174 | Key Operating Co., Inc. | Duncan, OK 73534-1284 | Oil & Gas Operator | Jun 2024 |
| 175 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 176 | Kykon Oil & Gas, Inc. | Billings, MT 59103 | Oil & Gas Operator | Feb 2009 |
| 177 | L P C Energy, Inc. | | Oil & Gas Operator | Mar 1985 |
| 178 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 179 | La. Land & Expl. Co. | | Oil & Gas Operator | Dec 2010 |
| 180 | Lea Exploration, Inc. | | Oil & Gas Operator | Nov 1989 |
| 181 | Lear Petroleum Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Aug 1999 |
| 182 | Legacy Resources Co., L.P. | | Oil & Gas Operator | Apr 2019 |
| 183 | LGS Exploration, Inc. | | Oil & Gas Operator | Jan 1991 |
| 184 | Liberty Resources, Inc. | | Oil & Gas Operator | Jun 2024 |
| 185 | Lindenmuth & Associates | | Oil & Gas Operator | Aug 2001 |
| 186 | Linder Oil Company,A Partnership | Shreveport, LA 71136 | Oil & Gas Operator | Nov 2024 |
| 187 | Linn Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 188 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 189 | Llog Expl. Co. | Metairie, LA 70005 | Oil & Gas Operator | Jan 2003 |
| 190 | Llox, L.L.C. | Covington, LA 70433 | Oil & Gas Operator | Nov 2024 |
| 191 | Lobo Operating, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jun 2024 |
| 192 | Longview Production, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2002 |
| 193 | Louisiana Energy & Environmental, Inc. | | Oil & Gas Operator | Aug 2015 |
| 194 | Louisiana Intrastate Gas Corp. | | Oil Operator | Feb 1994 |
| 195 | Lyons Petroleum, Inc. | | Oil & Gas Operator | Oct 1988 |
| 196 | M & M Oil Co., LLC | Oil City, LA 71061 | Oil & Gas Operator | Nov 2024 |
| 197 | Main Energy, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 2009 |
| 198 | Marion Corporation | | Oil & Gas Operator | Jan 2001 |
| 199 | Mark L Shidler Inc | Houston, TX 77055 | Oil & Gas Operator | Sep 2024 |
| 200 | Marquis Resources, LLC | | Oil & Gas Operator | Jul 2021 |