| 101 | Metroplex Barnett Shale LLC | Houston, TX 77001 | Gas Operator | Sep 2008 |
| 102 | Mexco Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Feb 2020 |
| 103 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 104 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 105 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2024 |
| 106 | Newark E&P Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2017 |
| 107 | Newark Energy LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2011 |
| 108 | North Country Energy LLC | Amarillo, TX 79159 | Oil & Gas Operator | Nov 2024 |
| 109 | North Texas Llano Operating Corp | Dallas, TX 75225 | Oil & Gas Operator | Nov 2024 |
| 110 | O.G.P. Operating, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Nov 2024 |
| 111 | Oak Hills Drilling & Oper., LLC | Holdenville, OK 74848 | Oil & Gas Operator | May 2013 |
| 112 | Okie Crude Company | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2024 |
| 113 | Ops Group Limited | Houston, TX 77060 | Oil & Gas Operator | Jun 2014 |
| 114 | Owl Creek Operating Co., Inc. | Denver, CO 80206 | Oil & Gas Operator | Nov 2024 |
| 115 | Owl Creek Production Co., Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2006 |
| 116 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 117 | Phillips, Bob | Weatherford, TX 76086 | Oil & Gas Operator | Nov 2019 |
| 118 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 119 | Plover Production Company | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2006 |
| 120 | Premier Minerals, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Nov 2024 |
| 121 | Premier Natural Resources II,LLC | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2015 |
| 122 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Sep 2024 |
| 123 | Quicksilver Resources Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 124 | Radius Operating, LLC | Round Rock, TX 78664 | Oil & Gas Operator | Nov 2024 |
| 125 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 126 | Range Production Company, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2024 |
| 127 | Reichmann Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Nov 2024 |
| 128 | Republic Energy Inc. | Decatur, TX 76234 | Oil & Gas Operator | Dec 2016 |
| 129 | Richey, Ray Management Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Nov 2024 |
| 130 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Nov 2024 |
| 131 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 132 | Routh Operating, LLC | Dallas, TX 75204 | Oil & Gas Operator | Mar 2011 |
| 133 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
| 134 | Sage Natural Resources LLC | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2024 |
| 135 | Schmid Properties Inc | Hico, TX 76457 | Oil & Gas Operator | Nov 2024 |
| 136 | Sheets Exploration Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2016 |
| 137 | Slate Holdings, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Nov 2024 |
| 138 | Snow Operating Co., Inc. | Haltom City, TX 76117 | Oil & Gas Operator | Feb 2024 |
| 139 | Southeastern Resources Corp. | Mansfield, TX 76063 | Oil & Gas Operator | Feb 2004 |
| 140 | Spindletop Drilling Co. | Dallas, TX 75230 | Oil & Gas Operator | Nov 2024 |
| 141 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Nov 2024 |
| 142 | Star Of Texas Energy SRVS, Inc. | Austin, TX 78702 | Oil & Gas Operator | Nov 2024 |
| 143 | Stroud Energy, LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2006 |
| 144 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 145 | Talon Oil & Gas LLC | Dallas, TX 75243 | Oil & Gas Operator | Dec 2010 |
| 146 | Tanglewood Oil & Gas LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2017 |
| 147 | TC Oil And Gas, LLC | Denton, TX 76205 | Oil Operator | Nov 2024 |
| 148 | TDC Engineering, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Nov 2024 |
| 149 | Tejas Western Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2018 |
| 150 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 151 | Texas International Oper., LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2013 |
| 152 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 153 | Titan Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2012 |
| 154 | TK Drilling Corp. | Tulsa, OK 74133 | Oil & Gas Operator | Aug 2024 |
| 155 | Torch Operating LLC | Fort Worth, TX 76135 | Oil & Gas Operator | Oct 2020 |
| 156 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 157 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2024 |
| 158 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 159 | Upp Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 160 | Vantage Fort Worth Energy LLC | Pittsburgh, PA 15222 | Oil & Gas Operator | Oct 2017 |
| 161 | Vargas Energy, LTD. | Fort Worth, TX 76109 | Gas Operator | Nov 2024 |
| 162 | Venado Operating Company LLC | Austin, TX 78738 | Oil & Gas Operator | Mar 2022 |
| 163 | Victory Eagle Utility SV Y, Inc. | Newark, TX 76071 | Gas Operator | Nov 2024 |
| 164 | Wagner Energy LLC | Enid, OK 73701 | Oil Operator | Aug 2024 |
| 165 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Nov 2024 |
| 166 | Walsh, F H Jr. Operating Co. Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2019 |
| 167 | WCWB Energy, LLC | Midland, TX 79701 | Oil Operator | Sep 2015 |
| 168 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 169 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 170 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 171 | Western Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 172 | Williams Prod. Gulf Coast, L.P. | Benbrook, TX 76126 | Oil & Gas Operator | Jan 2012 |
| 173 | Willowbend Investments, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2024 |
| 174 | Winchester Production Company | Shreveport, LA 71129 | Oil & Gas Operator | Nov 2008 |
| 175 | Wolsey Well Service, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2014 |
| 176 | WPX Energy Gulf Coast, LP | Benbrook, TX 76126 | Oil & Gas Operator | May 2012 |
| 177 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Nov 2024 |
| 178 | Young, Marshall R., Oil Co. | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |