| 101 | Dawson-Markwell Exploration Co. | Oklahoma City, OK 73101 | Oil & Gas Operator | Jan 2024 |
| 102 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Jan 2024 |
| 103 | Deep Reef Industries | Amarillo, TX 79101 | Oil & Gas Operator | Jan 2004 |
| 104 | Den Cal, Inc. | Borger, TX 79007 | Oil & Gas Operator | Apr 2024 |
| 105 | Denali Exploration, Inc. | Amarillo, TX 79109 | Oil & Gas Operator | Nov 2018 |
| 106 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 107 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 108 | Diamond S Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Apr 2024 |
| 109 | Diversified Production LLC | Minden, LA 71055 | Oil & Gas Operator | Apr 2024 |
| 110 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Feb 2024 |
| 111 | DP Well Works I, LLC | Salt Lake Cty, UT 84103 | Oil & Gas Operator | Apr 2024 |
| 112 | Drain Oil Co. | Fritch, TX 79036 | Oil & Gas Operator | Jul 2009 |
| 113 | Drain Oil Co. LLC | Fritch, TX 79036 | Oil & Gas Operator | Apr 2024 |
| 114 | DSX Operating Co. | Amarillo, TX 79105 | Oil & Gas Operator | Mar 2008 |
| 115 | Dundee Oil & Supply Inc | Tulsa, OK 74101 | Oil & Gas Operator | Apr 2001 |
| 116 | Dyne Oil & Gas,Inc. | Borger, TX 79008 | Oil & Gas Operator | Dec 2017 |
| 117 | Eagle Exploration Co., Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Dec 2019 |
| 118 | Elendil Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2024 |
| 119 | Empire Operating, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2017 |
| 120 | Encore Operating LP | Plano, TX 75024 | Oil & Gas Operator | Feb 2024 |
| 121 | Enerex Supply, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Nov 1993 |
| 122 | Energon Oil, Inc. | Amarillo, TX 79114 | Oil & Gas Operator | Apr 2024 |
| 123 | Energy 2000, Inc. | Reno, NV 89501 | Oil & Gas Operator | Apr 2024 |
| 124 | Energy Transfer Fuel, LP | Houston, TX 77002 | Oil & Gas Operator | Apr 2005 |
| 125 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 126 | Enid Operating, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Apr 2024 |
| 127 | Enron Oil & Gas Company | Houston, TX 77210 | Oil & Gas Operator | Dec 1999 |
| 128 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 129 | Et Gathering & Processing LLC | San Antonio, TX 78258 | Oil Operator | Dec 2023 |
| 130 | Etc Field Services LLC | San Antonio, TX 78258 | Oil Operator | Jun 2018 |
| 131 | Etc Texas Pipeline, LTD. | San Antonio, TX 78258 | Oil Operator | Sep 2023 |
| 132 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Jan 2024 |
| 133 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Apr 2024 |
| 134 | F. B. R. Production Company | Pampa, TX 79066 | Oil & Gas Operator | May 2000 |
| 135 | Faulconer Vernon E Inc | Tyler, TX 75711 | Oil & Gas Operator | Feb 2024 |
| 136 | Fora Company | Borger, TX 79007 | Oil & Gas Operator | Apr 2024 |
| 137 | Fort Worth Natural Gas, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Apr 2024 |
| 138 | Fortay Inc | Sunray, TX 79086 | Oil & Gas Operator | Apr 2024 |
| 139 | Four K Production | Pampa, TX 79065 | Oil & Gas Operator | Apr 2024 |
| 140 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Dec 2023 |
| 141 | Furr, Roy Estate Of | Midland, TX 79702 | Oil & Gas Operator | Jun 2016 |
| 142 | Future Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 1999 |
| 143 | G C & W Inc. | Borger, TX 79007 | Oil & Gas Operator | Oct 2016 |
| 144 | G. & S. Inc. | Gruver, TX 79040 | Oil & Gas Operator | Nov 2023 |
| 145 | Ganchos Inc. | Borger, TX 79008 | Oil & Gas Operator | Mar 2007 |
| 146 | Geo Petroleum, Inc. | Borger, TX 79007 | Oil & Gas Operator | Apr 2024 |
| 147 | Ginsweet Operating, Inc. | Borger, TX 79007 | Gas Operator | Apr 2024 |
| 148 | Gothic Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2015 |
| 149 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 150 | Grain Makers Oil Co., LLC | Canyon, TX 79015 | Oil & Gas Operator | Apr 2024 |
| 151 | Granitebay Operating, Inc. | Borger, TX 79008 | Oil & Gas Operator | Apr 2024 |
| 152 | Gross, L. Jack Production | Borger, TX 79008 | Oil & Gas Operator | Dec 1994 |
| 153 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 154 | Gunsmoke Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | May 2012 |
| 155 | H & L Exploration Company, LLC | Amarillo, TX 79114 | Oil & Gas Operator | Apr 2024 |
| 156 | H & L Operating Co LLP | Amarillo, TX 79114 | Oil & Gas Operator | Aug 2022 |
| 157 | H & L Operating Co., LLC | Amarillo, TX 79114 | Oil & Gas Operator | Mar 2021 |
| 158 | H & L Operating Company | Amarillo, TX 79114 | Oil & Gas Operator | Feb 2020 |
| 159 | Hadaway Consult And Engineer,LLC | Canadian, TX 79014 | Oil & Gas Operator | Apr 2024 |
| 160 | Halcon Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 161 | Harken Exploration Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2008 |
| 162 | Harmon, C. E. Oil, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2019 |
| 163 | Hawk Well Service | Borger, TX 79007 | Oil & Gas Operator | Apr 2024 |
| 164 | Helo Energy, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2001 |
| 165 | Helton, Pat A. & Alberta | Allison, TX 79003 | Oil & Gas Operator | Apr 2024 |
| 166 | Heritage Petroleum, Inc. | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2024 |
| 167 | Herrmann J B Oil And Gas | Amarillo, TX 79159-0670 | Oil & Gas Operator | Feb 2015 |
| 168 | Herrmann, J.B. | Amarillo, TX 79159 | Oil & Gas Operator | Aug 2019 |
| 169 | Highmark Energy Operating, LLC | Poynor, TX 75782 | Oil & Gas Operator | Apr 2024 |
| 170 | Holco Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | Apr 2024 |
| 171 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Apr 2024 |
| 172 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 173 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 174 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Apr 2024 |
| 175 | Hufo Production Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2002 |
| 176 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 177 | Hydroc Oil Company | Borger, TX 79007 | Oil & Gas Operator | May 2012 |
| 178 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 179 | Interstate Production Company, Inc. | Buckhannon, WV 26201-0000 | Oil & Gas Operator | Dec 2021 |
| 180 | Irvin Petroleum | Stinnett, TX 79083 | Oil & Gas Operator | Sep 1996 |
| 181 | Irvin Petroleum Inc. | Stinnett, TX 79083 | Oil & Gas Operator | Apr 2016 |
| 182 | J & A Oil Company | Odessa, TX 79764 | Oil & Gas Operator | Apr 2024 |
| 183 | J-Brex Company | Amarillo, TX 79101 | Oil & Gas Operator | Apr 2024 |
| 184 | J-Gar, Inc. | Amarillo, TX 79101 | Oil & Gas Operator | Jan 2003 |
| 185 | J. C. Production | Borger, TX 79008 | Oil & Gas Operator | Apr 2024 |
| 186 | J. W. Resources Inc. | Amarillo, TX 79159 | Oil & Gas Operator | Apr 2024 |
| 187 | Jackson, Donald W. | Borger, TX 79008 | Oil & Gas Operator | Dec 2001 |
| 188 | Jackson, Jeral W. Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2004 |
| 189 | Jaco Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | Apr 2024 |
| 190 | Jaten Oil Co. | Amarillo, TX 79105 | Oil & Gas Operator | Apr 1993 |
| 191 | Jaw Oil Co. | Amarillo, TX 79101 | Oil & Gas Operator | Jan 1997 |
| 192 | JCB II Enterprises LLC | Perryton, TX 79070 | Oil & Gas Operator | Jun 2023 |
| 193 | Jiro | Stinnett, TX 79083 | Oil & Gas Operator | Apr 2024 |
| 194 | Johnson Brothers | Morse, TX 79062 | Oil & Gas Operator | Apr 2024 |
| 195 | Jones Energy LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2024 |
| 196 | Jones Energy, LTD. | Austin, TX 78746 | Oil & Gas Operator | Sep 2013 |
| 197 | JTL Operating Co Inc | Katy, TX 77450 | Oil & Gas Operator | Apr 2024 |
| 198 | Jude Production, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Apr 2024 |
| 199 | K M X Corporation Inc. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2001 |
| 200 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Apr 2024 |