| 101 | Gulf South Pipeline Company, LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2020 |
| 102 | Gulf States Pipeline Corp. | | Oil & Gas Operator | May 2003 |
| 103 | Harvey Broyles | | Oil & Gas Operator | May 2012 |
| 104 | Highmark Energy Operating, LLC | Dallas, TX 75222 | Oil & Gas Operator | May 2025 |
| 105 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 106 | Hondo Operating, Inc. | | Oil & Gas Operator | Aug 1997 |
| 107 | Huggs Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2003 |
| 108 | Huggs Incorporated, Et Al | | Oil & Gas Operator | Feb 1998 |
| 109 | Hunt Petroleum Corporation | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 110 | Indigo Minerals LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 111 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | May 2025 |
| 112 | J. L. Shoalmire | | Oil & Gas Operator | Dec 2006 |
| 113 | Jag Operating, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2019 |
| 114 | Jandar Exploration, L. C. | Tyler, TX 75703 | Oil & Gas Operator | May 2025 |
| 115 | Janex Oil Co., Inc. | Dallas, TX 75219 | Oil & Gas Operator | Jun 2005 |
| 116 | Jeems Bayou Production Corp. | Oil City, LA 71061 | Oil & Gas Operator | May 2025 |
| 117 | Jenco Resources, Inc. | | Oil & Gas Operator | Aug 2009 |
| 118 | John J. Welsh | | Oil & Gas Operator | Dec 2024 |
| 119 | Justiss Oil Company, Inc. | Jena, LA 71342 | Oil & Gas Operator | Jan 2025 |
| 120 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | May 2025 |
| 121 | KCS Medallion Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2018 |
| 122 | KCS Resources LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 123 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 124 | Kelley Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Jan 2002 |
| 125 | Kelley Operating Company, LTD. | | Oil & Gas Operator | Aug 2003 |
| 126 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Mar 2025 |
| 127 | KJ Energy, LLC Of Delaware | | Oil & Gas Operator | Nov 2016 |
| 128 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 129 | L P C Energy, Inc. | | Oil & Gas Operator | Mar 1985 |
| 130 | Lace Operating | Fort Worth, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 131 | Lamar Hunt Trust Est Etal | | Oil & Gas Operator | Aug 1996 |
| 132 | Lamar Hunt Trust Est. | | Oil & Gas Operator | Mar 1978 |
| 133 | Laser Gas Company I, LLC | | Oil Operator | Aug 2007 |
| 134 | Lear Gas Transmission | | Oil Operator | Aug 1989 |
| 135 | Lear Petroleum Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Aug 1999 |
| 136 | Long Oil & Natural Gas Corp. | | Oil & Gas Operator | Feb 1996 |
| 137 | Louisiana Operating Co., Inc. | | Oil & Gas Operator | Aug 1994 |
| 138 | Louisiana-Hunt Petroleum Corp. | | Oil & Gas Operator | Dec 1985 |
| 139 | Loutex Production Company | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 140 | M. E. Operating & Services, Inc. | Fort Worth, TX 76104 | Oil & Gas Operator | May 2025 |
| 141 | Maple Gulf Coast Props. Corp. | | Oil & Gas Operator | Jun 1989 |
| 142 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Mar 2025 |
| 143 | Maximus Operating, LTD. | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 144 | May Petroleum, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Nov 1998 |
| 145 | McCord Oil Co. And T. Walker | | Oil & Gas Operator | Dec 1985 |
| 146 | McCormick-WHB | | Gas Operator | Jan 1984 |
| 147 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 148 | Milton Crow,Inc.&RP Evans Etal | | Oil & Gas Operator | Aug 1988 |
| 149 | Minatome Corpora | | Oil & Gas Operator | Sep 1987 |
| 150 | Mineral Ventures, Inc. | | Oil & Gas Operator | Dec 2024 |
| 151 | Monsanto Oil Company | | Oil & Gas Operator | Apr 1986 |
| 152 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 153 | Morgan Enterprises | | Oil & Gas Operator | Aug 1997 |
| 154 | MRD Operating LLC | | Oil & Gas Operator | Dec 2016 |
| 155 | Murphy Oil USA Inc | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 156 | Nadel & Gussman-Jetta Oper. Co. | | Oil & Gas Operator | Mar 2012 |
| 157 | Nadel And Gussman Ruston, LLC | | Oil & Gas Operator | Dec 2024 |
| 158 | Nadel And Gussman, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 159 | Nelson Energy, Inc. | | Oil & Gas Operator | Nov 2024 |
| 160 | Nelson Oil & Gas, Inc. | | Oil & Gas Operator | Aug 1995 |
| 161 | Nomeco Oil & Gas Co. | Jackson, MI 49204 | Oil & Gas Operator | Dec 1994 |
| 162 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 163 | O'Brien Energy Company | Shreveport, LA 71136 | Oil & Gas Operator | Sep 2019 |
| 164 | Ocean Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 165 | Osr Oil & Gas Corp | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |
| 166 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 167 | Pan-Ok Production Company | | Oil & Gas Operator | Nov 2024 |
| 168 | Panenergy La Intrastate Co | | Oil Operator | Mar 2000 |
| 169 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | May 2025 |
| 170 | Pedernales Petroleum Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 171 | Pelico Pipeline, LLC | | Oil Operator | Dec 2024 |
| 172 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 173 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 174 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2025 |
| 175 | Petrofunds, Inc & Sunny South | | Oil & Gas Operator | Feb 1984 |
| 176 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 177 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 178 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 179 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | May 2025 |
| 180 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 181 | Plantation Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Nov 2011 |
| 182 | Premier Natural Resources II,LLC | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2015 |
| 183 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Feb 2025 |
| 184 | Questar Expl. And Prod. Co. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jul 2011 |
| 185 | R H Energy Co Inc | | Oil & Gas Operator | Sep 1989 |
| 186 | Range Louisiana Operating, LLC | | Oil & Gas Operator | Aug 2020 |
| 187 | Rebel Oil Of North Louisiana, LLC | | Oil & Gas Operator | Dec 2007 |
| 188 | Regency Field Services LLC | Dallas, TX 75201 | Oil Operator | Jul 2017 |
| 189 | Regency Intrastate Gas LLC | | Oil Operator | Feb 2009 |
| 190 | Richard B. Nelson,Etal | | Oil & Gas Operator | May 1979 |
| 191 | Robert G Cox & Assoc La Inc. | | Oil & Gas Operator | Jun 1994 |
| 192 | Rockcliff Operating La LLC | | Oil & Gas Operator | Jul 2022 |
| 193 | Rosbottom Petroleum | | Oil & Gas Operator | Aug 1988 |
| 194 | Rosbottom Production Corp | Shreveport, LA 71134 | Oil & Gas Operator | Dec 2017 |
| 195 | Samson Contour Energy E&P, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2017 |
| 196 | Samson Kelley Operating Co., LTD. | | Oil & Gas Operator | Feb 2004 |
| 197 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 198 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 199 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 200 | SG Interests, Inc. | Houston, TX 77010 | Oil & Gas Operator | Jun 2007 |