| 4101 | Freeport Oil Company | New Orleans, LA 70112 | Oil & Gas Operator | Oct 1979 |
| 4102 | Freeport-McMoran Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 4103 | Freestone Resources, Inc | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 4104 | Fremont Energy, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Dec 1999 |
| 4105 | Fremont Exploration, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Nov 2014 |
| 4106 | French Production Incorporated | Houston, TX 77086 | Oil & Gas Operator | Dec 1997 |
| 4107 | Fresno Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 2025 |
| 4108 | Friemel & Carpenter, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2002 |
| 4109 | Friemel, Paul D. & Assoc., Inc. | Boerne, TX 78006 | Oil & Gas Operator | Mar 2007 |
| 4110 | Friendly Energy Services, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Dec 2025 |
| 4111 | Frio Engineering Inc. | Houston, TX 77066 | Oil & Gas Operator | Dec 2025 |
| 4112 | Frio Exploration Company | Pearland, TX 77588 | Oil & Gas Operator | Dec 2000 |
| 4113 | Frio Oil & Gas, LTD. | Austin, TX 78731 | Oil Operator | Dec 2025 |
| 4114 | Frio Production Co. | Alice, TX 78333 | Oil & Gas Operator | Sep 1998 |
| 4115 | Frio Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 4116 | Frisco Energy, L.L.C. | Tulsa, OK 74105 | Oil & Gas Operator | Oct 2025 |
| 4117 | Frisco Oil Corporation | Tyler, TX 75701 | Oil & Gas Operator | Mar 2000 |
| 4118 | Frisco Petroleum Management, LLC | Frisco, TX 75034 | Oil & Gas Operator | Sep 2021 |
| 4119 | Front Street Operating, LLC | Sourlake, TX 77659 | Oil & Gas Operator | Dec 2025 |
| 4120 | Frontier Gas Operating Corp. | Houston, TX 77002 | Oil & Gas Operator | Jul 1998 |
| 4121 | Frontier Operating Corporation | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 4122 | Frontier Resources, Inc. | Dallas, TX 75214 | Oil & Gas Operator | Dec 2025 |
| 4123 | Frost Brothers Resources, LLLP | Fort Worth, TX 76101 | Gas Operator | Nov 2024 |
| 4124 | Frost, C.M., P.M. & V.W. | Simonton, TX 77476 | Oil & Gas Operator | Feb 2000 |
| 4125 | Frost, Kenneth Oil & Gas Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1995 |
| 4126 | Frost,Cyrus B.,Jr.& Fleming, WM. | Eastland, TX 76448 | Oil & Gas Operator | May 2004 |
| 4127 | Frostwood Energy, LLC | Houston, TX 77219 | Oil & Gas Operator | Dec 2025 |
| 4128 | FTC Consulting, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 4129 | FTM Incorporated | Weatherford, TX 76086 | Gas Operator | Dec 2025 |
| 4130 | Fuego Energy, LLC | Fort Worth, TX 76136 | Oil Operator | Dec 2025 |
| 4131 | Fuel Products, Inc. | Midland, TX 79702 | Oil Operator | Mar 2002 |
| 4132 | Fueled Resources Inc | Boyd, TX 76023 | Oil & Gas Operator | Dec 2025 |
| 4133 | Fuji Resources Production Co,Inc | Houston, TX 77036 | Oil & Gas Operator | Feb 2000 |
| 4134 | Ful-Hill Oil & Gas, Inc. | Marshall, TX 75670 | Oil & Gas Operator | Aug 2003 |
| 4135 | Ful-Hill Oil & Gas, L.L.P. | Overton, TX 75684 | Oil & Gas Operator | Jun 2016 |
| 4136 | Fulcrum Energy Operating, LLC | Denver, CO 80206 | Oil & Gas Operator | Dec 2025 |
| 4137 | Fulcrum Exploration, LLC. | Flower Mound, TX 75028 | Oil & Gas Operator | Oct 2025 |
| 4138 | Fulfer Oil And Cattle Co. | Jal, NM 88252 | Oil & Gas Operator | Dec 2025 |
| 4139 | Fulfer, O. L. Operating Co., Inc | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 1999 |
| 4140 | Fuller Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1995 |
| 4141 | Fuller Operating Company | Lubbock, TX 79408 | Oil & Gas Operator | Mar 2008 |
| 4142 | Fuller Petroleum Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 4143 | Fuller Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 4144 | Fullerton Energy Corporation | Dallas, TX 75230 | Oil & Gas Operator | Apr 2002 |
| 4145 | Fullerton, B. N. | San Angelo, TX 76904 | Oil & Gas Operator | Jul 1994 |
| 4146 | Fullspike Energy LLC | Boyd, TX 76023 | Oil & Gas Operator | Dec 2025 |
| 4147 | Fulshear Oil & Gas Partners LP | Houston, TX 77002 | Gas Operator | Apr 2018 |
| 4148 | Fultz Oil Company | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 1995 |
| 4149 | Furie Operating, LLC | League City, TX 77573 | Oil & Gas Operator | Nov 2015 |
| 4150 | Furr, Roy Estate Of | Midland, TX 79702 | Oil & Gas Operator | Jun 2016 |
| 4151 | Furry Oil & Gas, Inc. | Bangs, TX 76823 | Oil & Gas Operator | Dec 2025 |
| 4152 | Furry Operating Account | Brownwood, TX 76804 | Oil & Gas Operator | Aug 2003 |
| 4153 | Furry Producing Company | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2025 |
| 4154 | Furry, Myrl M. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2003 |
| 4155 | Fuse Energy, LLC | Alvord, TX 76225 | Oil & Gas Operator | Jan 2019 |
| 4156 | Fusion Energy Holdings, LLC | Throckmorton, TX 76483 | Oil Operator | Dec 2025 |
| 4157 | Fusion XP, Inc. | Arlington, TX 76006 | Oil Operator | Apr 2014 |
| 4158 | Future Petroleum Company LLC | Houston, TX 77027 | Oil & Gas Operator | Jun 2013 |
| 4159 | Future Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 1999 |
| 4160 | FX Energy Operating, LLC | Canadian, TX 79014 | Oil & Gas Operator | Dec 2025 |
| 4161 | G & C Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 4162 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Dec 2025 |
| 4163 | G & G Oil | Luling, TX 78648 | Oil Operator | Dec 2025 |
| 4164 | G & G Oil, LLC | Frankston, TX 75763 | Oil & Gas Operator | Dec 2025 |
| 4165 | G & K Operating, LLC | Poth, TX 78147 | Oil & Gas Operator | Dec 2025 |
| 4166 | G & M Gas & Oil | Midland, TX 79701 | Oil & Gas Operator | Jun 1998 |
| 4167 | G & S Energy, Inc. | Bangs, TX 76823 | Oil & Gas Operator | Apr 2024 |
| 4168 | G & W Production Company L.L.C. | El Campo, TX 77437 | Oil Operator | May 2017 |
| 4169 | G C & W Inc. | Borger, TX 79007 | Oil & Gas Operator | Oct 2016 |
| 4170 | G D Energy Corporation | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 4171 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 4172 | G N K Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2020 |
| 4173 | G P II Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2020 |
| 4174 | G Productions | Snyder, TX 79549 | Oil & Gas Operator | Jun 1998 |
| 4175 | G&L Oil And Gas, LLC | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2025 |
| 4176 | G-3 Oil | Albany, TX 76430 | Oil & Gas Operator | Jul 1995 |
| 4177 | G. & S. Inc. | Gruver, TX 79040 | Oil & Gas Operator | Nov 2023 |
| 4178 | G. A. Hawkins Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 4179 | G. H. Ranch Management, LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2013 |
| 4180 | G. H. Ranch, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2006 |
| 4181 | G. H. Ranch, LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 4182 | G. S. Properties, Inc. | Arlington, TX 76013 | Oil & Gas Operator | May 1999 |
| 4183 | G.& S. Landscaping, Inc. | Houston, TX 77095 | Gas Operator | Jun 2023 |
| 4184 | G.A.P. Production LLC | Sourlake, TX 77659 | Oil Operator | Dec 2025 |
| 4185 | G.H.W. Holding Company | Odessa, TX 79760 | Oil & Gas Operator | Nov 2000 |
| 4186 | G.P.C. Oil And Gas Corporation | Midland, TX 79710 | Oil & Gas Operator | Feb 1993 |
| 4187 | G.R.P. Gauging, Inc. | Wharton, TX 77488 | Oil & Gas Operator | Oct 2010 |
| 4188 | Gaea Services, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Sep 2021 |
| 4189 | Gaedeke Oil & Gas Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Sep 2023 |
| 4190 | Gaeton Oil & Gas Corp. | Derby, CT 06418 | Oil & Gas Operator | Jun 1998 |
| 4191 | Gage, H. L. | Windthorst, TX 76389 | Oil & Gas Operator | May 2005 |
| 4192 | Gago, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 4193 | Gaines Operating, LLC | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 4194 | Gaither Petroleum Corporation | Katy, TX 77493 | Oil & Gas Operator | Dec 2025 |
| 4195 | Gala Resources, LTD. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 4196 | Galbraith, Dallas S. | Abilene, TX 79601 | Oil & Gas Operator | Feb 1994 |
| 4197 | Galilee Oil Investments LLC | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2025 |
| 4198 | Galindo Brothers, Inc. | Alice, TX 78333 | Oil & Gas Operator | Dec 2025 |
| 4199 | Gallagher Oil | Grandfalls, TX 79742 | Oil Operator | Apr 2025 |
| 4200 | Gallery Petroleum LLC | Houston, TX 77036 | Oil & Gas Operator | Dec 2025 |