| 2001 | Evolution Energy LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2026 |
| 2002 | Evolution Operating Co., Inc. | Houston, TX 77079 | Oil & Gas Operator | Mar 2026 |
| 2003 | Ew Carter Oil Co;Inc | | Oil & Gas Operator | Dec 2025 |
| 2004 | Ewsc Inc | Kenosha, WI 53142-3775 | Oil & Gas Operator | Apr 2020 |
| 2005 | Excalibur Resources LLC | Houston, TX 77002-5220 | Oil & Gas Operator | Dec 2025 |
| 2006 | Excel Operating Inc | Dallas, TX 75234-7300 | Oil & Gas Operator | Jun 2022 |
| 2007 | Excel Production Inc | Lubbock, TX 79424-2341 | Oil Operator | Apr 2020 |
| 2008 | Excelco Energy Inc. | Kingwood, TX 77339 | Oil & Gas Operator | Jul 2018 |
| 2009 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 2010 | Executive Properties Inc | Amarillo, TX 79110 | Oil & Gas Operator | Aug 1994 |
| 2011 | Exok Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 2012 | Exoko Operating Company Inc | Tulsa, OK 74170-0246 | Oil & Gas Operator | Jan 2006 |
| 2013 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Mar 2026 |
| 2014 | Exploration Associates | Oklahoma City, OK 73102-8606 | Oil & Gas Operator | Mar 2015 |
| 2015 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 2016 | Exploration Professionals Inc | Chelsea, OK 74016-0066 | Oil Operator | Dec 2023 |
| 2017 | Exploration Technologies Inc | Crescent, OK 73028-0546 | Oil & Gas Operator | Mar 2015 |
| 2018 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Mar 2026 |
| 2019 | Express Oil & Gas LLC | Oklahoma City, OK 73142-3017 | Oil & Gas Operator | Jan 2026 |
| 2020 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Mar 2026 |
| 2021 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Mar 2026 |
| 2022 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Sep 2025 |
| 2023 | Eyler Corporation | | Oil & Gas Operator | Nov 2012 |
| 2024 | Eyler Dean E | Cleveland, OK 74020 | Oil & Gas Operator | Dec 2025 |
| 2025 | Eyler Nelson E | | Oil Operator | Nov 1998 |
| 2026 | Ezekiel Exploration, LLC | Blanchard, OK 73010 | Oil Operator | Jan 2026 |
| 2027 | F & G Management LLC | Claremore, OK 74019-0392 | Oil Operator | Dec 2025 |
| 2028 | F & J Oil Company, L.L.C. | | Oil Operator | Dec 2025 |
| 2029 | F & M Oil Company Inc | Pettus, TX 78146 | Oil & Gas Operator | Mar 2026 |
| 2030 | F & S Energy LLC | Crescent, OK 73028 | Oil & Gas Operator | Jan 2026 |
| 2031 | F C D Oil Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 1995 |
| 2032 | F D & Jack Oil Company | Muskogee, OK 74402-1444 | Oil & Gas Operator | May 2015 |
| 2033 | F Davis Oil & Gas LLC | Cleveland, OK 74020 | Oil Operator | Dec 2025 |
| 2034 | F M C Operating LLC | Okmulgee, OK 74447 | Oil & Gas Operator | Feb 2025 |
| 2035 | F M Hoel | | Oil & Gas Operator | Dec 2000 |
| 2036 | F O & G LLC | Pawhuska, OK 74056-5075 | Oil Operator | Apr 2022 |
| 2037 | F P C Disposal Inc | El Reno, OK 73036-5501 | Oil Operator | Apr 2003 |
| 2038 | Fackrell & Associates LLC | Ardmore, OK 73402-1452 | Oil Operator | Aug 2025 |
| 2039 | Fadem Oil Company | Tulsa, OK 74135 | Oil Operator | Jan 1996 |
| 2040 | Fagan Engineering | Shawnee, OK 74801-3021 | Oil & Gas Operator | Oct 1994 |
| 2041 | Fahrenheit Petroleum Co Inc | | Oil & Gas Operator | Mar 2015 |
| 2042 | Fail W T Inc | | Oil & Gas Operator | Mar 2015 |
| 2043 | Fair Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 2000 |
| 2044 | Fairchild Oil Corporation | Edmond, OK 73013 | Oil & Gas Operator | Oct 1994 |
| 2045 | Fairchild Well Service Inc | Ponca City, OK 74602-0470 | Oil & Gas Operator | Jun 2006 |
| 2046 | Fairfield Oil & Gas Corp | Edmond, OK 73083 | Oil & Gas Operator | Nov 2021 |
| 2047 | Fairview Production Co LLC | Davis, OK 73030 | Oil & Gas Operator | Jan 2026 |
| 2048 | Fairway Resources Operating III LLC | Houston, TX 77002-2728 | Oil & Gas Operator | Dec 2025 |
| 2049 | Fairway Resources Operating, LLC | Southlake, TX 76092 | Oil & Gas Operator | Aug 2022 |
| 2050 | Fairway Resources, Inc. | Jamestown, NY 14701 | Oil & Gas Operator | Dec 2024 |
| 2051 | Faith Production LLC | Holdenville, OK 74848 | Oil & Gas Operator | Jan 2026 |
| 2052 | Falcon Engineering Company, Inc. | Big Rapids, MI 493070818 | Oil & Gas Operator | Jul 2001 |
| 2053 | Falcon Oil & Gas Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2022 |
| 2054 | Falcon Oil Properties LLP | Bristow, OK 74010 | Oil Operator | Dec 2025 |
| 2055 | Falcon-Challenge Oil & Gas Co | Houston, TX 77056 | Oil & Gas Operator | Mar 1993 |
| 2056 | Fallen Timbers Energy LLC | Tulsa, OK 74105-8713 | Oil Operator | Feb 2021 |
| 2057 | Far West Development, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2026 |
| 2058 | Farley Christopher D | Kellyville, OK 74039 | Oil & Gas Operator | Jul 2019 |
| 2059 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Sep 2025 |
| 2060 | Farmers Energy Corporation | Tulsa, OK 74103-3525 | Oil & Gas Operator | Nov 2021 |
| 2061 | Farmers Royalty Pool | | Oil & Gas Operator | Jul 1992 |
| 2062 | Farmland Industries Inc | Kansas City, MO 64195-0111 | Oil & Gas Operator | Nov 1995 |
| 2063 | Faro Operating Company Anadarko LLC | Littleton, CO 80120 | Oil & Gas Operator | Dec 2025 |
| 2064 | Farrar Carolyn Dba C J Investments | Kingfisher, OK 73750 | Oil & Gas Operator | Sep 2024 |
| 2065 | Farris Well Service LLC | Liberal, KS 67901-5644 | Oil & Gas Operator | Jul 2016 |
| 2066 | Faulconer Energy, LLC | Tyler, TX 75711 | Oil & Gas Operator | Mar 2026 |
| 2067 | Faulconer, Vernon E., Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jan 2026 |
| 2068 | Faulkner Corporation | Oklahoma City, OK 73154-9704 | Oil & Gas Operator | Jan 2017 |
| 2069 | FBF Energy LLC | Tulsa, OK 74120 | Oil & Gas Operator | Jan 2026 |
| 2070 | FDL Operating, LLC | Judson, TX 75660 | Oil & Gas Operator | Mar 2026 |
| 2071 | Fears George E | | Oil & Gas Operator | Mar 2019 |
| 2072 | Fears Jr Laymon F | Bartlesville, OK 74003-2323 | Oil & Gas Operator | May 2013 |
| 2073 | Federal Energy Development Co. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2011 |
| 2074 | Feeley Ranch LLC | Broken Arrow, OK 74014 | Gas Operator | Dec 2017 |
| 2075 | Feezel A L LLC | Ada, OK 74821-1371 | Oil & Gas Operator | Mar 2015 |
| 2076 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Mar 2026 |
| 2077 | Felix Energy LLC | Denver, CO 80202-1467 | Oil & Gas Operator | Dec 2025 |
| 2078 | Fell Oil And Gas Inc | Tulsa, OK 74157-9487 | Oil & Gas Operator | Aug 2016 |
| 2079 | Felty Drilling Co. Inc | Burkburnett, TX 76354 | Oil & Gas Operator | Mar 2026 |
| 2080 | Femco Services Inc | Lindsay, OK 73052-0632 | Oil & Gas Operator | Nov 2006 |
| 2081 | Femco SWD Inc | Enid, OK 73702-3907 | Oil Operator | Mar 2014 |
| 2082 | Ferguson Oil Company Inc | | Oil & Gas Operator | Apr 1994 |
| 2083 | Ferguson-Hunter Explor Inc | N Little Rock, AR 72120-1667 | Oil & Gas Operator | Aug 2016 |
| 2084 | Ferraro Energy Corporation | Oklahoma City, OK 73114-6629 | Oil & Gas Operator | Aug 2013 |
| 2085 | FG III LLC | Colleyville, TX 76034-4963 | Oil & Gas Operator | Apr 2018 |
| 2086 | FGS Energy LLC | Duncan, OK 73533-1829 | Oil & Gas Operator | Jan 2026 |
| 2087 | Fha Investments LLC | Cushing, OK 74023 | Oil & Gas Operator | Dec 2025 |
| 2088 | Fha Operating LLC | Cushing, OK 74023-1030 | Oil & Gas Operator | Sep 2025 |
| 2089 | Fidgets Energy LLC | Checotah, OK 74426-5309 | Oil Operator | Oct 2024 |
| 2090 | Fieldstone Exploration Company | | Oil & Gas Operator | Jan 2007 |
| 2091 | Fine Jack | Pensacola, FL 32516 | Oil Operator | May 1995 |
| 2092 | Finlay Energy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 1999 |
| 2093 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Mar 2026 |
| 2094 | Finney Drilling Company | Wann, OK 74083-2314 | Oil Operator | Jul 2018 |
| 2095 | Finney Kyler A Dba Finney Oil Co | Wann, OK 74083 | Oil Operator | Dec 2025 |
| 2096 | Finston Arthur | Tulsa, OK 74105-7183 | Oil & Gas Operator | Mar 2007 |
| 2097 | Firehouse Energy LLC | Morris, OK 74445 | Oil & Gas Operator | Mar 2024 |
| 2098 | Firey Oil Company | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2021 |
| 2099 | First Ascent Operating LLC | Addison, TX 75001 | Oil Operator | Dec 2025 |
| 2100 | First Liberty Energy Inc | Boca Raton, FL 33432-5942 | Oil & Gas Operator | Jul 2013 |