| 10101 | Farmers Union Central Exchange, Inc. | | Oil & Gas Operator | May 1983 |
| 10102 | Farmland Industries Inc | Kansas City, MO 64195-0111 | Oil & Gas Operator | Nov 1995 |
| 10103 | Farnsworth & Kaiser Oil Company | Newcastle, WY 82701 | Oil & Gas Operator | Sep 2012 |
| 10104 | Farr Enterprises Inc | West Union, WV 24656 | Oil & Gas Operator | Dec 2021 |
| 10105 | Farrar Carolyn Dba C J Investments | Kingfisher, OK 73750 | Oil & Gas Operator | Sep 2024 |
| 10106 | Farrar Oil Co | MT Vernon, IL 62864 | Oil & Gas Operator | Dec 2000 |
| 10107 | Farrar Oilwell S | | Oil & Gas Operator | Jul 1986 |
| 10108 | Farrar Pump & Su | | Oil & Gas Operator | Dec 1996 |
| 10109 | Farrar Pump & Supply Co., Inc. | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jun 2009 |
| 10110 | Farrar, Irmgard | Dewittville, NY 14728 | Gas Operator | Dec 2023 |
| 10111 | Farrell Oil Company | Lubbock, TX 79424 | Oil & Gas Operator | May 2025 |
| 10112 | Farrex, Inc. | Vernon, TX 76384 | Oil & Gas Operator | Oct 2008 |
| 10113 | Farrington & Hepler Gas & Oil Inc | Seneca, PA 16346-0546 | Oil & Gas Operator | Dec 2024 |
| 10114 | Farrington, Walter L., Jr. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2002 |
| 10115 | Farris Oil, Inc. | Sedan, KS 67361 | Oil Operator | Dec 2024 |
| 10116 | Farris Well Service | | Oil & Gas Operator | Dec 2021 |
| 10117 | Farris Well Service LLC | Liberal, KS 67901-5644 | Oil & Gas Operator | Jul 2016 |
| 10118 | Farthing Don Oil | | Oil & Gas Operator | Jun 1994 |
| 10119 | Fas Services, Inc. | | Oil Operator | Apr 2005 |
| 10120 | Faseler, Herb | Hondo, TX 78861 | Oil Operator | May 2025 |
| 10121 | Fasken Oil And Ranch, LTD. | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 10122 | Fasken, Barbara | Midland, TX 79701 | Oil & Gas Operator | Dec 1995 |
| 10123 | Fastrak Energy, LLC | Cherryvale, KS 67335 | Oil & Gas Operator | Jan 2025 |
| 10124 | Faul Energy, Inc. | | Oil & Gas Operator | Oct 1988 |
| 10125 | Faulconer Energy, LLC | Tyler, TX 75711 | Oil & Gas Operator | May 2025 |
| 10126 | Faulconer Inc* Vernon E | | Gas Operator | Dec 2018 |
| 10127 | Faulconer Vernon E Inc | Tyler, TX 75711 | Oil & Gas Operator | Mar 2025 |
| 10128 | Faulkner Corporation | Oklahoma City, OK 73154-9704 | Oil & Gas Operator | Jan 2017 |
| 10129 | Faulkner DRLG Co, Inc | | Oil Operator | Dec 2023 |
| 10130 | Faust H Floyd | Cardington, OH 43315 | Oil Operator | Dec 1998 |
| 10131 | Fawnwood Energy Inc | Bruin, PA 16022-0157 | Oil & Gas Operator | Dec 2019 |
| 10132 | Fay A. Williams | | Oil & Gas Operator | Dec 2024 |
| 10133 | FBF Energy LLC | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2025 |
| 10134 | FBN Operating Co | | Oil Operator | Nov 1986 |
| 10135 | FDF Resources | Newcastle, WY 82701 | Oil & Gas Operator | Mar 2025 |
| 10136 | FDL Operating, LLC | Judson, TX 75660 | Oil & Gas Operator | May 2025 |
| 10137 | Fe Co. | Derby, KS 67037 | Oil & Gas Operator | Dec 2009 |
| 10138 | Fe-NM, LLC | Tyler, TX 75711 | Oil & Gas Operator | Mar 2025 |
| 10139 | Feagan Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 10140 | Fear & Duncan | | Oil Operator | Jul 1979 |
| 10141 | Fears George E | | Oil & Gas Operator | Mar 2019 |
| 10142 | Feazel Operating Company, Inc. | | Oil & Gas Operator | Feb 1979 |
| 10143 | Fed Operating LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 10144 | Federal Energy Development Co. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2011 |
| 10145 | Federal Hill Land Co., Inc. | | Gas Operator | Apr 1991 |
| 10146 | Federal Oil & Gas - Rood L L C | | Oil & Gas Operator | Dec 2024 |
| 10147 | Federal Oil, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | May 2025 |
| 10148 | Federated Natural Resources Corp | | Oil & Gas Operator | Oct 1989 |
| 10149 | Federated Natural Resources Corp And Fede | | Oil & Gas Operator | Feb 1989 |
| 10150 | Federated Oil & Gas Properties | Traverse City, MI 49685 | Gas Operator | Mar 2014 |
| 10151 | Federated Oil And Gas Properties Inc | | Oil & Gas Operator | Feb 2025 |
| 10152 | Federer, H. C. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 1993 |
| 10153 | Fee Energy Corporation | | Oil & Gas Operator | Jul 1978 |
| 10154 | Feeley Ranch LLC | Broken Arrow, OK 74014 | Gas Operator | Dec 2017 |
| 10155 | Fees Jr And Son Oil & Gas* Walter S | | Oil & Gas Operator | Mar 2025 |
| 10156 | Feezel A L LLC | Ada, OK 74821-1371 | Oil & Gas Operator | Mar 2015 |
| 10157 | Feikls Oil & Gas Inc | Eagle, ID 83616-7713 | Oil & Gas Operator | Dec 2024 |
| 10158 | Feinen, Richard C. | Forestville, NY 14062 | Gas Operator | Dec 2023 |
| 10159 | Feldco, Inc. | | Oil & Gas Operator | Apr 2007 |
| 10160 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | May 2025 |
| 10161 | Felix Energy Holdings II, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Apr 2020 |
| 10162 | Felix Energy LLC | Denver, CO 80202-1467 | Oil & Gas Operator | Feb 2025 |
| 10163 | Fell Oil & Gas C | | Oil Operator | Oct 1991 |
| 10164 | Fell Oil And Gas Inc | Tulsa, OK 74157-9487 | Oil & Gas Operator | Aug 2016 |
| 10165 | Fell, Clarence | | Gas Operator | Dec 1972 |
| 10166 | Fell-Brecklein-Town Oil Co. | | Oil Operator | Dec 1975 |
| 10167 | Fellows Energy LTD | Price, UT 84501-2016 | Gas Operator | Sep 2007 |
| 10168 | Felmont Oil Corporation | Walnut Creek, CA 94596-3568 | Oil & Gas Operator | Feb 1990 |
| 10169 | Felty Drilling Co. Inc | Burkburnett, TX 76354 | Oil & Gas Operator | May 2025 |
| 10170 | Felty Production, Inc. | Burkburnett, TX 76354 | Oil Operator | May 2025 |
| 10171 | Felty, F. T. Operating Company | Burkburnett, TX 76354 | Oil & Gas Operator | Jul 2018 |
| 10172 | Femco Services Inc | Lindsay, OK 73052-0632 | Oil & Gas Operator | Nov 2006 |
| 10173 | Femco SWD Inc | Enid, OK 73702-3907 | Oil Operator | Mar 2014 |
| 10174 | Fender Expl & Prod Co., L.L.C. | Tyler, TX 75710 | Oil & Gas Operator | Sep 2004 |
| 10175 | Fender, Mildred A. | Russell, KS 67665 | Oil & Gas Operator | Jun 2000 |
| 10176 | Fenix Petroleum Group LLC | Washington, TX 77880 | Oil Operator | Jul 2019 |
| 10177 | Fenn, Bill Inc. | Giddings, TX 78942 | Oil & Gas Operator | Mar 2008 |
| 10178 | Fenno, Tom Prod. | FT Collins, CO 80524 | Oil & Gas Operator | Mar 2018 |
| 10179 | Fenoglio Energy Production, LLC | Nocona, TX 76255 | Oil Operator | May 2025 |
| 10180 | Fenoglio Oil Company | Nocona, TX 76255 | Oil Operator | May 2025 |
| 10181 | Fenoglio, Donnie Oil Company | Nocona, TX 76255 | Oil & Gas Operator | Feb 2014 |
| 10182 | Fenway Energy Development Co. | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 10183 | Ferenbaugh Albert & Denise | Danville, OH 43014 | Oil & Gas Operator | Dec 2024 |
| 10184 | Fergus Oil & Gas, LLC | Allen, TX 75013 | Oil Operator | May 2025 |
| 10185 | Ferguson & Bosworth | | Oil & Gas Operator | May 2007 |
| 10186 | Ferguson Bob | Casper, WY 82605 | Oil Operator | May 2004 |
| 10187 | Ferguson Energy Inc | Evanston, WY 82930 | Oil & Gas Operator | Mar 2025 |
| 10188 | Ferguson Oil & Gas Inc. | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 10189 | Ferguson Oil Company Inc | | Oil & Gas Operator | Apr 1994 |
| 10190 | Ferguson Orval L | | Oil & Gas Operator | Oct 1983 |
| 10191 | Ferguson, S. M. Jr., Inc. | Dallas, TX 75218 | Oil & Gas Operator | May 2025 |
| 10192 | Ferguson-Burns Leasing Co. | Rockdale, TX 76567 | Oil & Gas Operator | Oct 2007 |
| 10193 | Ferguson-Hunter Explor Inc | N Little Rock, AR 72120-1667 | Oil & Gas Operator | Aug 2016 |
| 10194 | Fernwood Corporation | | Oil Operator | Dec 1986 |
| 10195 | Ferraro Energy Corporation | Oklahoma City, OK 73114-6629 | Oil & Gas Operator | Aug 2013 |
| 10196 | Ferreira Oil Properties LLC | Carefree, AZ 85377 | Oil Operator | Apr 2014 |
| 10197 | Ferrell Gas Co. | | Gas Operator | Dec 1977 |
| 10198 | Ferris, Wakyn W. | Denver, CO 80202 | Oil Operator | Jun 1988 |
| 10199 | Ferry Lake Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 10200 | Fesco, LTD. | Alice, TX 78332 | Oil Operator | May 2025 |