Leon County Operators
Every operator with a permit on file or a well of record here, ranked by permits issued in the window. Wells are each operator's current inventory in the county from the RRC wellbore file.
| # | Operator | Permits | All time | Horizontal | Wells | First | Last |
|---|---|---|---|---|---|---|---|
| 1 | XTO Energy Inc. | 184 | 184 | 64 | 12 | Jul 11, 2003 | Sep 12, 2019 |
| 2 | Baxter, Murphy H. | 76 | 76 | 0 | 1 | Jun 9, 1983 | May 31, 1994 |
| 3 | Wisenbaker Prod. Co. | 75 | 75 | 0 | 14 | Feb 12, 1985 | Jun 25, 1992 |
| 4 | Valence Operating Company | 71 | 71 | 1 | 63 | Jun 15, 1989 | Sep 20, 2022 |
| 5 | Anadarko Petroleum Corporation | 62 | 62 | 1 | 1 | Apr 11, 2000 | Aug 11, 2007 |
| 6 | BRG Lone Star Ltd. | 57 | 57 | 0 | 1 | Apr 18, 2005 | Oct 10, 2016 |
| 7 | Encana Oil & Gas(usa) Inc. | 50 | 50 | 6 | 1 | Nov 12, 2004 | Feb 1, 2013 |
| 8 | Comstock Oil & Gas, LLC | 48 | 48 | 48 | 64 | Dec 8, 2022 | Sep 25, 2026 |
| 9 | Halcon Operating Co., Inc. | 44 | 44 | 40 | 0 | Aug 7, 2012 | Aug 14, 2013 |
| 10 | Marathon Oil Company | 43 | 43 | 0 | 2 | Oct 18, 1989 | Oct 21, 2013 |
| 11 | Lasmo Energy Corporation | 42 | 42 | 0 | 2 | Jan 22, 1986 | Jan 24, 1991 |
| 12 | Roberts & Hammack, Inc. | 41 | 41 | 0 | 16 | Jun 22, 1977 | Apr 19, 2006 |
| 13 | Diasu Oil & Gas Co., Inc. | 39 | 39 | 0 | 0 | Sep 17, 2004 | Jan 28, 2008 |
| 14 | Mitchell Energy Corporation | 38 | 38 | 0 | 10 | Jun 6, 1978 | Aug 18, 2000 |
| 15 | Gastar Exploration Texas, LP | 38 | 38 | 8 | 1 | May 20, 2005 | Sep 24, 2012 |
| 16 | TXO Production Corp. | 32 | 32 | 0 | 5 | Dec 2, 1981 | Oct 23, 1990 |
| 17 | Palmer Petroleum Inc. | 30 | 30 | 1 | 7 | Oct 8, 1980 | Dec 9, 2005 |
| 18 | Grace Petroleum Corp. | 29 | 29 | 0 | 3 | Nov 16, 1977 | Jan 8, 1993 |
| 19 | Ensight III Energy Mgmt, LLC | 27 | 27 | 0 | 0 | Dec 16, 2005 | Apr 26, 2008 |
| 20 | Barrow-Shaver Resources Co. | 26 | 26 | 0 | 29 | Dec 8, 1993 | Apr 29, 2008 |
| 21 | Triad Energy Corporation | 26 | 26 | 0 | 2 | Jun 28, 1985 | Apr 8, 1988 |
| 22 | Tipco | 26 | 26 | 0 | 1 | Nov 14, 1977 | Dec 31, 1981 |
| 23 | Majestic Petroleum Corporation | 24 | 24 | 0 | 8 | Oct 15, 1986 | Apr 6, 1988 |
| 24 | Forest Oil Corporation | 22 | 22 | 1 | 0 | Jun 19, 2008 | Jul 9, 2010 |
| 25 | Texas Royalty Corp. | 21 | 21 | 0 | 16 | Mar 29, 1989 | Dec 16, 2008 |
| 26 | Shar-Alan Oil Company | 21 | 21 | 0 | 2 | Sep 30, 1980 | Aug 13, 1987 |
| 27 | Sonat Exploration Company -Tyler | 20 | 20 | 0 | 4 | Jul 8, 1993 | Aug 24, 1999 |
| 28 | American Cascade Energy, Inc. | 19 | 19 | 0 | 4 | Nov 23, 1988 | Oct 1, 1992 |
| 29 | EOG Resources, Inc. | 19 | 19 | 8 | 4 | Jun 9, 2000 | Jan 27, 2015 |
| 30 | Basin Operating Co. Ltd. | 19 | 19 | 0 | 2 | Dec 6, 1977 | Aug 30, 1989 |
| 31 | Pioneer Natural Res. USA, Inc. | 19 | 19 | 0 | 1 | Feb 2, 1998 | Jul 9, 2004 |
| 32 | Eurafrep, Inc. | 17 | 17 | 0 | 2 | May 31, 1983 | Oct 5, 1984 |
| 33 | Energy & Expl. Prtnrs Oper., LP | 16 | 16 | 15 | 0 | Jul 1, 2013 | May 19, 2014 |
| 34 | Apache Corporation | 15 | 15 | 0 | 5 | Aug 10, 1990 | Oct 13, 2008 |
| 35 | Brooks Petroleum Company | 15 | 15 | 1 | 3 | May 23, 2005 | Jun 26, 2014 |
| 36 | Hilcorp Energy Company | 14 | 14 | 4 | 160 | Jan 22, 2002 | Nov 2, 2026 |
| 37 | Prime Operating Company | 14 | 14 | 0 | 12 | Jul 27, 1993 | Feb 15, 2011 |
| 38 | Pmo | 14 | 14 | 14 | 0 | Nov 19, 2010 | Jun 29, 2012 |
| 39 | Enserch Exploration, Inc | 13 | 13 | 0 | 6 | Jul 5, 1979 | May 22, 1996 |
| 40 | TA-Lee-HO Energy Corporation | 13 | 13 | 0 | 4 | Apr 29, 1981 | Apr 26, 1989 |
| 41 | Calto Operating Company, Inc. | 13 | 13 | 0 | 2 | Dec 11, 1990 | Sep 11, 2003 |
| 42 | United Oil & Minerals, Inc. | 12 | 12 | 12 | 5 | Sep 9, 1992 | Dec 4, 1996 |
| 43 | Global Natural Resources Corp. | 12 | 12 | 0 | 1 | Feb 20, 1986 | Jun 21, 1991 |
| 44 | Mosbacher, Robert | 12 | 12 | 0 | 1 | Aug 3, 1977 | Aug 1, 1983 |
| 45 | Dynamic of Texas, Inc. | 12 | 12 | 0 | 0 | Jul 23, 1984 | Oct 28, 1987 |
| 46 | Hughey Oil Company | 12 | 12 | 0 | 0 | Apr 22, 1983 | Jun 25, 1990 |
| 47 | Carr Resources, Inc. | 11 | 11 | 1 | 7 | Jun 19, 1997 | Apr 23, 2003 |
| 48 | Stallion Oil Company | 11 | 11 | 0 | 0 | Dec 15, 1989 | Mar 1, 2000 |
| 49 | ZTC Petro Investments LP | 11 | 11 | 7 | 0 | Apr 24, 2014 | Jun 16, 2017 |
| 50 | Roberts & Hammack Inc. | 10 | 10 | 0 | 62 | Mar 19, 2007 | Sep 13, 2023 |
| 51 | Machin, Art & Associates, Inc. | 10 | 10 | 0 | 1 | Aug 5, 1980 | Jul 23, 1991 |
| 52 | Brown, Tom Inc. | 10 | 10 | 0 | 0 | Oct 15, 2003 | Dec 9, 2004 |
| 53 | Chesapeake Operating, Inc. | 10 | 10 | 1 | 0 | May 5, 2006 | Jan 27, 2011 |
| 54 | NRM Petroleum Corp. | 10 | 10 | 0 | 0 | Nov 10, 1983 | Jan 23, 1986 |
| 55 | Inexco Oil Company | 9 | 9 | 0 | 3 | Jul 31, 1980 | Apr 7, 1986 |
| 56 | Reata Oil & Gas Corp. | 9 | 9 | 0 | 3 | Apr 13, 1979 | Apr 28, 1987 |
| 57 | Miller Energy, Inc. | 9 | 9 | 0 | 2 | Mar 22, 1983 | Sep 17, 2004 |
| 58 | Davis Crude, Inc. | 9 | 9 | 0 | 0 | Nov 5, 1980 | Mar 17, 1982 |
| 59 | Machin & Associates, Inc. | 8 | 8 | 0 | 3 | Jan 20, 1993 | Sep 20, 2007 |
| 60 | Famcor Oil, Inc | 8 | 8 | 0 | 2 | Jan 17, 1985 | Jul 17, 1986 |
| 61 | Marshall Expl. Inc. | 8 | 8 | 0 | 2 | Feb 27, 1985 | Apr 23, 1987 |
| 62 | Texas Oil & Gas Corp. | 8 | 8 | 0 | 1 | May 21, 1979 | Sep 17, 1981 |
| 63 | Law Engineering Testing Co. | 8 | 8 | 0 | 0 | Jun 19, 1979 | Jun 19, 1979 |
| 64 | Paloma Production Company, Inc. | 8 | 8 | 0 | 0 | Jul 12, 1978 | Sep 11, 1980 |
| 65 | Benson Mineral Group, Inc. | 7 | 7 | 0 | 9 | Apr 24, 1981 | Sep 15, 1987 |
| 66 | Amoco Production Company | 7 | 7 | 0 | 4 | May 18, 1995 | May 15, 1998 |
| 67 | Kalos Corp. | 7 | 7 | 0 | 3 | Oct 4, 1984 | Dec 11, 1987 |
| 68 | Union Pacific Resources Company | 7 | 7 | 3 | 2 | Feb 6, 1997 | Dec 19, 1997 |
| 69 | Wildco Resources, Inc. | 7 | 7 | 0 | 1 | Aug 30, 1991 | Oct 28, 2010 |
| 70 | Basa Resources, Inc. | 6 | 6 | 0 | 5 | Jun 26, 2008 | Feb 6, 2012 |
| 71 | Canyon Resources, Inc | 6 | 6 | 0 | 2 | Nov 17, 1981 | Jul 15, 1982 |
| 72 | Dallas Production, Inc. | 6 | 6 | 0 | 2 | Mar 21, 1983 | Jul 22, 2011 |
| 73 | Darnell, Bobby J. | 6 | 6 | 0 | 1 | Nov 7, 1977 | Dec 15, 1977 |
| 74 | Cal-Tex Operations, Inc. | 6 | 6 | 0 | 0 | Dec 10, 1979 | Jun 29, 1982 |
| 75 | Cape Operating Company, Ltd. | 6 | 6 | 0 | 0 | Mar 19, 1982 | Aug 16, 1982 |
| 76 | Shubuta Oil Corporation | 6 | 6 | 0 | 0 | Mar 7, 1978 | Mar 30, 1981 |
| 77 | Treadstone Energy Partners, LLC | 6 | 6 | 0 | 0 | Oct 25, 2011 | Feb 21, 2013 |
| 78 | Rippy Oil Company | 5 | 5 | 3 | 4 | Jul 27, 1998 | Sep 24, 2010 |
| 79 | Bledsoe Petro Corporation | 5 | 5 | 0 | 2 | Aug 18, 1992 | Jan 4, 2000 |
| 80 | American Cometra, Inc. | 5 | 5 | 0 | 1 | Sep 20, 1995 | Feb 6, 1997 |
| 81 | Burlington Resources O & G Co LP | 5 | 5 | 0 | 1 | May 18, 2005 | Jun 21, 2008 |
| 82 | Compass Exploration, Inc. | 5 | 5 | 1 | 1 | Sep 7, 1995 | Aug 8, 1996 |
| 83 | Hamill, Claud B. | 5 | 5 | 0 | 1 | Jul 31, 1978 | Dec 12, 1985 |
| 84 | Tag Operating Company, Inc. | 5 | 5 | 0 | 1 | Jan 31, 2006 | Dec 4, 2017 |
| 85 | Weeks Exploration Company | 5 | 5 | 0 | 1 | Sep 2, 1988 | Nov 17, 1989 |
| 86 | Gulf Oil Corp. | 5 | 5 | 0 | 0 | Apr 2, 1979 | Jun 24, 1981 |
| 87 | Hunt Petroleum Corporation | 5 | 5 | 0 | 0 | Dec 19, 2003 | Mar 10, 2005 |
| 88 | New Gulf Resources, LLC | 5 | 5 | 5 | 0 | Dec 19, 2013 | Nov 12, 2014 |
| 89 | Pitts Oil Co.-Dallas Prod. Inc. | 5 | 5 | 0 | 0 | Aug 24, 1981 | Jul 24, 1984 |
| 90 | Woodbine Production Corporation | 4 | 4 | 2 | 59 | Jul 11, 2008 | Oct 10, 2011 |
| 91 | Amerril Energy LLC | 4 | 4 | 3 | 17 | Oct 26, 2012 | Nov 5, 2013 |
| 92 | Etx Energy, LLC | 4 | 4 | 3 | 9 | Sep 13, 2010 | Jan 9, 2017 |
| 93 | Lake Ronel Oil Company | 4 | 4 | 0 | 4 | Jan 23, 1981 | Mar 7, 1986 |
| 94 | Hunt Oil Company | 4 | 4 | 0 | 2 | May 26, 1981 | Feb 10, 1986 |
| 95 | Czar Resources, Inc. | 4 | 4 | 0 | 1 | Sep 5, 1979 | Dec 31, 1981 |
| 96 | Kinlaw Oil Corporation | 4 | 4 | 1 | 1 | Sep 19, 1994 | Mar 17, 1995 |
| 97 | Buffco Production Inc. | 4 | 4 | 0 | 0 | Feb 11, 2000 | Nov 10, 2016 |
| 98 | Chase Oil & Gas, Inc. | 4 | 4 | 0 | 0 | Feb 15, 1978 | Apr 9, 1980 |
| 99 | Fortson Oil Company | 4 | 4 | 0 | 0 | Oct 15, 1986 | Apr 28, 1999 |
| 100 | Moore McCormack Production, Inc. | 4 | 4 | 0 | 0 | Feb 19, 1981 | Dec 31, 1981 |
| 101 | Shell Western E&P Inc. | 4 | 4 | 0 | 0 | Apr 11, 1985 | May 24, 1985 |
| 102 | Southwest Petrochem, Inc. | 4 | 4 | 0 | 0 | Feb 1, 1980 | Dec 18, 1980 |
| 103 | Trivium Operating, LLC | 4 | 4 | 2 | 0 | Dec 23, 2011 | Jun 27, 2012 |
| 104 | Williams, Clayton Energy, Inc. | 4 | 4 | 0 | 0 | Mar 14, 2001 | Jul 19, 2011 |
| 105 | Williams, Clayton W., Jr., Inc. | 4 | 4 | 0 | 0 | Nov 7, 1986 | Jul 8, 1987 |
| 106 | Italian-American Oil Co., Inc. | 3 | 3 | 0 | 12 | Jan 24, 1997 | Sep 17, 2007 |
| 107 | Exxon Corp. | 3 | 3 | 0 | 4 | Sep 23, 1981 | Apr 21, 1986 |
| 108 | Mitsui E&P USA LLC | 3 | 3 | 3 | 3 | Feb 21, 2025 | Oct 27, 2025 |
| 109 | C. W. Resources, Inc. | 3 | 3 | 1 | 2 | Dec 22, 1997 | Dec 30, 2002 |
| 110 | Teco Operating Company | 3 | 3 | 0 | 2 | Jan 29, 1985 | Jun 17, 1993 |
| 111 | Abadou Oil Co. | 3 | 3 | 0 | 1 | Feb 12, 1979 | Apr 16, 1982 |
| 112 | Allied Operating Texas, LLC | 3 | 3 | 3 | 1 | Dec 10, 2010 | Apr 3, 2012 |
| 113 | First Source Texas, Inc. | 3 | 3 | 0 | 1 | Jan 9, 2003 | Apr 12, 2004 |
| 114 | Ladd Petroleum Corp. | 3 | 3 | 0 | 1 | Apr 24, 1986 | Jul 10, 1986 |
| 115 | Samedan Oil Corporation | 3 | 3 | 0 | 1 | Dec 2, 1977 | Dec 20, 2000 |
| 116 | Shield Resources, Inc. | 3 | 3 | 0 | 1 | May 1, 1984 | Feb 10, 1986 |
| 117 | Sklar Exploration Company LLC | 3 | 3 | 0 | 1 | Apr 12, 2004 | May 19, 2008 |
| 118 | Sulphur River Exploration, Inc. | 3 | 3 | 0 | 1 | Sep 24, 1980 | May 31, 2005 |
| 119 | Torch Operating Company | 3 | 3 | 0 | 1 | Oct 29, 1992 | Dec 4, 1996 |
| 120 | Bryant - Chase Energy Corp. | 3 | 3 | 0 | 0 | Jan 27, 2003 | Oct 8, 2004 |
| 121 | Buttes Resources Company | 3 | 3 | 0 | 0 | Dec 30, 1977 | Jan 9, 1979 |
| 122 | Chapman Oil | 3 | 3 | 0 | 0 | Dec 28, 1978 | May 6, 1982 |
| 123 | Conoco Inc. | 3 | 3 | 0 | 0 | Mar 24, 1981 | Oct 28, 1983 |
| 124 | Edwards, Jack H. Inc. | 3 | 3 | 0 | 0 | Dec 9, 1986 | Apr 10, 1991 |
| 125 | First Source Gas, LP | 3 | 3 | 0 | 0 | Aug 25, 2004 | Sep 21, 2005 |
| 126 | Kennedy & Mitchell, Inc. | 3 | 3 | 0 | 0 | Mar 27, 1979 | Nov 28, 1979 |
| 127 | Lomax Exploration Co. | 3 | 3 | 0 | 0 | Nov 5, 1979 | Jul 16, 1980 |
| 128 | Lynco Oil Corp. | 3 | 3 | 0 | 0 | May 28, 1980 | Jul 17, 1980 |
| 129 | McRae Exploration & Prod., Inc. | 3 | 3 | 0 | 0 | Jan 28, 1988 | Feb 8, 1988 |
| 130 | Natural Resource Management Corp | 3 | 3 | 0 | 0 | Feb 27, 1986 | Feb 27, 1986 |
| 131 | North Central Oil Corp. | 3 | 3 | 0 | 0 | Dec 29, 1978 | Apr 20, 1981 |
| 132 | Odegard Energy, Inc. | 3 | 3 | 0 | 0 | Jul 17, 2000 | Jul 19, 2001 |
| 133 | Ridge Petroleum Inc. | 3 | 3 | 0 | 0 | Jun 23, 2005 | May 31, 2006 |
| 134 | Rrch Corp. | 3 | 3 | 2 | 0 | Sep 12, 2012 | Oct 18, 2012 |
| 135 | SDG Operating Company, Inc | 3 | 3 | 0 | 0 | Dec 3, 1999 | Feb 22, 2005 |
| 136 | Spicer Oil Company, Inc. | 3 | 3 | 0 | 0 | Dec 27, 1999 | Aug 15, 2008 |
| 137 | Fossil Operating, Inc. | 2 | 2 | 2 | 9 | Jun 18, 2014 | Mar 13, 2015 |
| 138 | Armstrong, Thurman | 2 | 2 | 0 | 4 | Jun 15, 1981 | Jun 15, 1981 |
| 139 | Jay Management Company, LLC | 2 | 2 | 0 | 4 | Apr 17, 2013 | Oct 16, 2013 |
| 140 | Sun Exploration & Production Co. | 2 | 2 | 0 | 3 | Aug 8, 1979 | Mar 12, 1981 |
| 141 | American Energy Partners, Inc. | 2 | 2 | 0 | 2 | May 8, 2001 | May 8, 2001 |
| 142 | Decker Operating Co., L.L.C. | 2 | 2 | 2 | 2 | Jan 4, 2013 | Sep 24, 2014 |
| 143 | EP Operating Company | 2 | 2 | 0 | 2 | Oct 18, 1985 | Jul 5, 1990 |
| 144 | Gsi Oil & Gas, Inc. | 2 | 2 | 0 | 2 | Dec 6, 2007 | Nov 3, 2011 |
| 145 | Wortham Oil & Gas | 2 | 2 | 2 | 2 | May 17, 2005 | Jun 9, 2006 |
| 146 | Bell & Kinley Company | 2 | 2 | 0 | 1 | May 5, 1989 | Feb 25, 2002 |
| 147 | Calto Oil Co. | 2 | 2 | 0 | 1 | Aug 4, 1982 | May 11, 1984 |
| 148 | Can-Tex Energy Corp. | 2 | 2 | 0 | 1 | Apr 3, 1989 | Sep 13, 1990 |
| 149 | Crescent Pass Energy, LLC | 2 | 2 | 0 | 1 | Jan 24, 2023 | Apr 5, 2023 |
| 150 | El Paso Production Company | 2 | 2 | 0 | 1 | Jun 30, 2000 | Aug 18, 2003 |
| 151 | Fortson, Ben J. | 2 | 2 | 0 | 1 | Jun 29, 1981 | Nov 25, 1985 |
| 152 | Gary Oil & Gas | 2 | 2 | 0 | 1 | Jul 16, 1993 | Jan 25, 1994 |
| 153 | Maynard Oil Co. | 2 | 2 | 0 | 1 | Feb 6, 1978 | Jul 31, 1978 |
| 154 | Penn Resources, Inc. | 2 | 2 | 0 | 1 | Aug 10, 1982 | Apr 10, 1985 |
| 155 | Shoco Production, L.P. | 2 | 2 | 0 | 1 | Mar 1, 2011 | May 25, 2011 |
| 156 | Tyler Oil & Gas Inc. | 2 | 2 | 0 | 1 | Feb 13, 1991 | Apr 17, 1995 |
| 157 | Aethon Energy Operating LLC | 2 | 2 | 2 | 0 | Sep 4, 2025 | Sep 4, 2025 |
| 158 | AF Operating, LLC | 2 | 2 | 0 | 0 | Sep 24, 2008 | Sep 17, 2009 |
| 159 | Alliance E & P, Inc. | 2 | 2 | 0 | 0 | Oct 30, 1981 | Feb 25, 1982 |
| 160 | Alta Mesa Services, LP | 2 | 2 | 1 | 0 | Oct 7, 2011 | Apr 5, 2012 |
| 161 | Asm Oil & Gas Company, Inc. | 2 | 2 | 0 | 0 | Sep 2, 2008 | May 12, 2009 |
| 162 | Bechtel Energy Resources Corp. | 2 | 2 | 0 | 0 | Sep 18, 1991 | Sep 9, 1992 |
| 163 | Blackwell Operating Company | 2 | 2 | 0 | 0 | May 12, 2004 | Feb 14, 2005 |
| 164 | Bluco Drilling Company, Inc. | 2 | 2 | 0 | 0 | Jul 16, 1982 | Aug 16, 1982 |
| 165 | Bowles Energy Inc | 2 | 2 | 0 | 0 | Aug 8, 2005 | Jun 12, 2006 |
| 166 | Centex Ind. Co. | 2 | 2 | 0 | 0 | Apr 16, 1992 | Sep 28, 1992 |
| 167 | Chambers Exploration, Inc. | 2 | 2 | 0 | 0 | Dec 20, 1984 | Jun 11, 1985 |
| 168 | Chaparral Operating Company, Inc | 2 | 2 | 0 | 0 | Oct 1, 1985 | Nov 1, 1985 |
| 169 | Diamond Drilling Co. | 2 | 2 | 0 | 0 | Nov 17, 1981 | Apr 12, 1982 |
| 170 | Eugene Oil Co. Inc. | 2 | 2 | 0 | 0 | Apr 5, 1991 | Jul 18, 1991 |
| 171 | First Energy Corp. of Miss. | 2 | 2 | 0 | 0 | Feb 13, 1986 | Jul 29, 1986 |
| 172 | Germany, E. B. & Sons | 2 | 2 | 0 | 0 | Aug 28, 1980 | Nov 18, 1981 |
| 173 | Goldsmith, J. Paul | 2 | 2 | 0 | 0 | Jul 30, 1987 | Dec 17, 1987 |
| 174 | Home Petroleum Corporation | 2 | 2 | 0 | 0 | Mar 13, 1985 | Aug 6, 1986 |
| 175 | Key Production Company, Inc. | 2 | 2 | 0 | 0 | Feb 28, 2001 | Aug 2, 2005 |
| 176 | Mariah Energy Corp. | 2 | 2 | 0 | 0 | Sep 5, 1991 | Sep 1, 1993 |
| 177 | Martin Oil & Gas Co. | 2 | 2 | 0 | 0 | Dec 31, 1985 | Sep 18, 1986 |
| 178 | Matador Operating Company | 2 | 2 | 0 | 0 | Sep 25, 2002 | Jul 9, 2003 |
| 179 | McMoran Exploration Co. | 2 | 2 | 0 | 0 | Jul 6, 1982 | Feb 21, 1984 |
| 180 | Mitchell Energy Company L.P. | 2 | 2 | 0 | 0 | Apr 20, 2001 | May 30, 2001 |
| 181 | Moore-McCormack Oil & Gas Corp. | 2 | 2 | 0 | 0 | May 26, 1983 | Apr 17, 1984 |
| 182 | Perco Investment Co. | 2 | 2 | 0 | 0 | Dec 31, 1980 | Oct 13, 1981 |
| 183 | Pritchard Engineering | 2 | 2 | 0 | 0 | Nov 30, 1983 | Nov 28, 1984 |
| 184 | Range Production Company | 2 | 2 | 2 | 0 | May 11, 2007 | Oct 19, 2011 |
| 185 | Red Willow Production, LLC | 2 | 2 | 0 | 0 | Nov 14, 2007 | Aug 4, 2008 |
| 186 | Ridley &locklin Operating Co Inc | 2 | 2 | 0 | 0 | Oct 11, 1977 | Nov 14, 1977 |
| 187 | Robbins Energy, Inc. | 2 | 2 | 0 | 0 | Mar 20, 1995 | Jul 13, 1995 |
| 188 | Sabine Oil & Gas Corporation | 2 | 2 | 0 | 0 | May 8, 2017 | Dec 4, 2020 |
| 189 | Sandel Operating Company | 2 | 2 | 0 | 0 | Apr 27, 2006 | Jan 17, 2008 |
| 190 | Security Exploration, Inc. | 2 | 2 | 0 | 0 | Nov 17, 1993 | Mar 28, 1996 |
| 191 | Sierra Production Co. | 2 | 2 | 0 | 0 | May 23, 1986 | Jun 20, 1986 |
| 192 | Sikes Operating, Inc. | 2 | 2 | 0 | 0 | Oct 1, 1993 | Nov 22, 1994 |
| 193 | Sikes Producing, Inc. | 2 | 2 | 0 | 0 | Mar 7, 1990 | Nov 27, 1990 |
| 194 | Smith Petroleum Company | 2 | 2 | 0 | 0 | Mar 8, 1985 | Mar 2, 2000 |
| 195 | SPG Exploration, Corp. | 2 | 2 | 0 | 0 | Feb 8, 1988 | Jul 18, 1988 |
| 196 | Spicewood Operating Company, LLC | 2 | 2 | 0 | 0 | Oct 31, 2014 | Aug 19, 2016 |
| 197 | Sun Expl. & Prod. Co.-Lafayette | 2 | 2 | 0 | 0 | Jul 15, 1980 | Nov 4, 1982 |
| 198 | SW Operating, Inc. | 2 | 2 | 0 | 0 | Jan 28, 1986 | Apr 9, 1986 |
| 199 | Tecumseh Energy Corp. | 2 | 2 | 0 | 0 | Oct 13, 1986 | Apr 14, 1987 |
| 200 | Texaco Producing Inc. | 2 | 2 | 0 | 0 | Jun 26, 1987 | Aug 26, 1987 |
| 201 | Tristar Exploration, Inc | 2 | 2 | 0 | 0 | Jun 14, 2006 | Oct 17, 2006 |
| 202 | Umc Petroleum Corporation | 2 | 2 | 0 | 0 | Apr 11, 1995 | Oct 18, 1996 |
| 203 | Union Oil Company of California | 2 | 2 | 0 | 0 | Nov 30, 1984 | Feb 27, 1985 |
| 204 | Wessely Energy Corporation | 2 | 2 | 0 | 0 | Jul 27, 1981 | Dec 7, 1981 |
| 205 | Whiting Oil and Gas Corporation | 2 | 2 | 0 | 0 | Oct 14, 2002 | Nov 7, 2003 |
| 206 | Williams Prod. Gulf Coast, L.P. | 2 | 2 | 0 | 0 | Jul 2, 1996 | Aug 26, 1999 |
| 207 | Zapata Exploration Co-Onshore | 2 | 2 | 0 | 0 | Jul 25, 1985 | Aug 5, 1985 |
| 208 | Maximus Operating, Ltd. | 1 | 1 | 0 | 4 | Jul 16, 2026 | Jul 16, 2026 |
| 209 | Oak Energy, LLC | 1 | 1 | 0 | 4 | Feb 1, 2021 | Feb 1, 2021 |
| 210 | Spindletop Oil & Gas Company | 1 | 1 | 0 | 4 | Mar 16, 2016 | Mar 16, 2016 |
| 211 | Rivershore Operating LLC | 1 | 1 | 0 | 2 | Oct 24, 2017 | Oct 24, 2017 |
| 212 | Adamas Energy LLC | 1 | 1 | 1 | 1 | Sep 4, 2025 | Sep 4, 2025 |
| 213 | Americana Petroleum Corporation | 1 | 1 | 0 | 1 | Mar 4, 1980 | Mar 4, 1980 |
| 214 | Barbee, R.L. Operating, Inc. | 1 | 1 | 0 | 1 | Dec 22, 2025 | Dec 22, 2025 |
| 215 | Blue Star Operating Company | 1 | 1 | 0 | 1 | Nov 12, 1999 | Nov 12, 1999 |
| 216 | B.W.O.C., Inc. | 1 | 1 | 0 | 1 | Sep 5, 2001 | Sep 5, 2001 |
| 217 | Cape Operating, Inc. | 1 | 1 | 0 | 1 | Jan 5, 2005 | Jan 5, 2005 |
| 218 | Crest Resources, Inc. | 1 | 1 | 0 | 1 | Aug 26, 2005 | Aug 26, 2005 |
| 219 | Gulfstream Petroleum Corp. | 1 | 1 | 0 | 1 | Jul 5, 1979 | Jul 5, 1979 |
| 220 | Lathrop, A. D. | 1 | 1 | 0 | 1 | Dec 16, 1993 | Dec 16, 1993 |
| 221 | Mobil Producing TX. & N.M. Inc. | 1 | 1 | 0 | 1 | Jun 24, 1985 | Jun 24, 1985 |
| 222 | Norcen Explorer, Inc. | 1 | 1 | 0 | 1 | Jun 17, 1987 | Jun 17, 1987 |
| 223 | Petroleum Asset Management Corp | 1 | 1 | 0 | 1 | Mar 23, 2012 | Mar 23, 2012 |
| 224 | Ridley Oil Corporation | 1 | 1 | 0 | 1 | Aug 24, 1982 | Aug 24, 1982 |
| 225 | Roosth Production Co. | 1 | 1 | 0 | 1 | Mar 27, 1997 | Mar 27, 1997 |
| 226 | Samson Exploration, LLC | 1 | 1 | 0 | 1 | Dec 12, 2014 | Dec 12, 2014 |
| 227 | Southwest Operating, Inc.-Tyler | 1 | 1 | 0 | 1 | Nov 27, 2006 | Nov 27, 2006 |
| 228 | Terrain Water Solutions, LLC | 1 | 1 | 0 | 1 | Dec 8, 2025 | Dec 8, 2025 |
| 229 | Texas Crude Exploration, Inc. | 1 | 1 | 0 | 1 | Sep 17, 1986 | Sep 17, 1986 |
| 230 | W&T Offshore, Inc. | 1 | 1 | 0 | 1 | Nov 22, 2010 | Nov 22, 2010 |
| 231 | Abadou, Jean Marc | 1 | 1 | 0 | 0 | Jul 13, 1977 | Jul 13, 1977 |
| 232 | Aber Oil & Gas Co. | 1 | 1 | 0 | 0 | Oct 13, 2000 | Oct 13, 2000 |
| 233 | Allen Petroleum, Inc. | 1 | 1 | 0 | 0 | May 13, 1981 | May 13, 1981 |
| 234 | Alliance Exploration & Prod, Inc | 1 | 1 | 0 | 0 | Sep 23, 1981 | Sep 23, 1981 |
| 235 | Alltex Exploration, Inc. | 1 | 1 | 0 | 0 | Feb 3, 1986 | Feb 3, 1986 |
| 236 | Amax Oil & Gas Inc. | 1 | 1 | 0 | 0 | Jan 18, 1989 | Jan 18, 1989 |
| 237 | Anadarko E&P Company LP | 1 | 1 | 0 | 0 | Nov 21, 2006 | Nov 21, 2006 |
| 238 | Apd Company | 1 | 1 | 0 | 0 | Jan 26, 1987 | Jan 26, 1987 |
| 239 | Arco Oil & Gas Co. | 1 | 1 | 0 | 0 | Feb 19, 1988 | Feb 19, 1988 |
| 240 | Aroc (Texas) Inc. | 1 | 1 | 0 | 0 | Mar 2, 2005 | Mar 2, 2005 |
| 241 | Ascent Oil & Gas Corp. | 1 | 1 | 0 | 0 | Sep 28, 1987 | Sep 28, 1987 |
| 242 | Atmos Pipeline - Texas | 1 | 1 | 0 | 0 | May 14, 2024 | May 14, 2024 |
| 243 | Ballard Exploration Company,inc. | 1 | 1 | 0 | 0 | Jul 25, 1986 | Jul 25, 1986 |
| 244 | Bci - Vogi | 1 | 1 | 0 | 0 | Nov 3, 1993 | Nov 3, 1993 |
| 245 | Belco Oil & Gas Corp. | 1 | 1 | 0 | 0 | Jan 18, 1996 | Jan 18, 1996 |
| 246 | Big Run Production Company | 1 | 1 | 0 | 0 | Feb 5, 2008 | Feb 5, 2008 |
| 247 | Blackgum Corporation | 1 | 1 | 0 | 0 | May 21, 1991 | May 21, 1991 |
| 248 | Bryant & Carr, Inc. | 1 | 1 | 0 | 0 | Mar 23, 1993 | Mar 23, 1993 |
| 249 | Buchanan, Wayman W. | 1 | 1 | 0 | 0 | Nov 21, 1984 | Nov 21, 1984 |
| 250 | Burnett Oil Co., Inc. | 1 | 1 | 0 | 0 | Dec 31, 1980 | Dec 31, 1980 |
| 251 | Cauble Enterprises | 1 | 1 | 0 | 0 | Jul 14, 1982 | Jul 14, 1982 |
| 252 | Century Offshore Company | 1 | 1 | 0 | 0 | Jun 13, 2001 | Jun 13, 2001 |
| 253 | Chinn Exploration Company | 1 | 1 | 0 | 0 | Nov 19, 1997 | Nov 19, 1997 |
| 254 | Cities Service Oil & Gas Corp. | 1 | 1 | 0 | 0 | Jul 1, 1982 | Jul 1, 1982 |
| 255 | Consolidated Oil & Gas, Inc | 1 | 1 | 0 | 0 | Nov 21, 1994 | Nov 21, 1994 |
| 256 | Convest Energy Corporation | 1 | 1 | 0 | 0 | Jul 1, 1981 | Jul 1, 1981 |
| 257 | Cotton Petroleum Corp. | 1 | 1 | 0 | 0 | Oct 10, 1979 | Oct 10, 1979 |
| 258 | Covey Park Operating LLC | 1 | 1 | 0 | 0 | Dec 11, 2014 | Dec 11, 2014 |
| 259 | Cox, Edwin L. | 1 | 1 | 0 | 0 | Nov 10, 1978 | Nov 10, 1978 |
| 260 | Delaware Davis Petroleum Corp. | 1 | 1 | 0 | 0 | Dec 20, 1993 | Dec 20, 1993 |
| 261 | Dobos, James D. | 1 | 1 | 0 | 0 | Sep 15, 1982 | Sep 15, 1982 |
| 262 | Dome Petroleum Corp | 1 | 1 | 0 | 0 | Sep 29, 1981 | Sep 29, 1981 |
| 263 | D-S-B Properties, Inc. | 1 | 1 | 0 | 0 | Jul 21, 1994 | Jul 21, 1994 |
| 264 | Energetics, Inc. | 1 | 1 | 0 | 0 | Dec 14, 1982 | Dec 14, 1982 |
| 265 | Ensight Energy Management, LLC | 1 | 1 | 0 | 0 | Aug 5, 2005 | Aug 5, 2005 |
| 266 | Etopsi Oil and Gas, L.L.C. | 1 | 1 | 0 | 0 | Dec 16, 2015 | Dec 16, 2015 |
| 267 | Finley Resources, Inc. | 1 | 1 | 0 | 0 | Aug 19, 2003 | Aug 19, 2003 |
| 268 | First Texas Gas, LP | 1 | 1 | 0 | 0 | Jan 3, 2005 | Jan 3, 2005 |
| 269 | Flamingo Operating, LLC | 1 | 1 | 0 | 0 | May 29, 2015 | May 29, 2015 |
| 270 | Florida Exploration Co. | 1 | 1 | 0 | 0 | Jun 29, 1981 | Jun 29, 1981 |
| 271 | Forcenergy Inc | 1 | 1 | 0 | 0 | Dec 12, 1997 | Dec 12, 1997 |
| 272 | Forza Operating, LLC | 1 | 1 | 0 | 0 | Sep 22, 2021 | Sep 22, 2021 |
| 273 | Fuller, Ancil T. | 1 | 1 | 0 | 0 | Oct 9, 1989 | Oct 9, 1989 |
| 274 | Furie Operating, LLC | 1 | 1 | 1 | 0 | May 9, 2011 | May 9, 2011 |
| 275 | Gainco, Inc. | 1 | 1 | 0 | 0 | Jan 7, 1986 | Jan 7, 1986 |
| 276 | Gebo Operating Company | 1 | 1 | 0 | 0 | Jun 11, 1984 | Jun 11, 1984 |
| 277 | General Production Company, Inc. | 1 | 1 | 0 | 0 | Sep 10, 1984 | Sep 10, 1984 |
| 278 | Gragg, O. L. | 1 | 1 | 0 | 0 | Dec 31, 1982 | Dec 31, 1982 |
| 279 | Grand Energy, Inc. | 1 | 1 | 0 | 0 | Dec 27, 1990 | Dec 27, 1990 |
| 280 | Halbouty, Michel T. Energy Co. | 1 | 1 | 0 | 0 | Aug 2, 1984 | Aug 2, 1984 |
| 281 | Hamman Oil & Refg. Co. | 1 | 1 | 0 | 0 | Dec 31, 1982 | Dec 31, 1982 |
| 282 | Hampton Resources Corporation | 1 | 1 | 0 | 0 | May 18, 1994 | May 18, 1994 |
| 283 | Hanover Management Co. | 1 | 1 | 0 | 0 | Dec 22, 1981 | Dec 22, 1981 |
| 284 | Helmerich & Payne, Inc. | 1 | 1 | 0 | 0 | Jun 30, 1998 | Jun 30, 1998 |
| 285 | Hicon Gas Producers, Inc. | 1 | 1 | 0 | 0 | May 29, 1996 | May 29, 1996 |
| 286 | High Roller Wells, L.L.C. | 1 | 1 | 0 | 0 | Oct 6, 2014 | Oct 6, 2014 |
| 287 | Hobbs, Albert | 1 | 1 | 0 | 0 | Nov 23, 1983 | Nov 23, 1983 |
| 288 | Hughey, Gaylord T. Sr. Oper. Co. | 1 | 1 | 0 | 0 | Nov 17, 1994 | Nov 17, 1994 |
| 289 | Hunter, J. in Trust | 1 | 1 | 0 | 0 | Sep 2, 1988 | Sep 2, 1988 |
| 290 | Hutchins, Kameron D. | 1 | 1 | 0 | 0 | Sep 5, 1986 | Sep 5, 1986 |
| 291 | International Drilling Systems | 1 | 1 | 0 | 0 | Jan 25, 1988 | Jan 25, 1988 |
| 292 | Jennings Oil Inc. | 1 | 1 | 0 | 0 | Jul 29, 1982 | Jul 29, 1982 |
| 293 | Jordan Oil & Gas Co. | 1 | 1 | 0 | 0 | Dec 20, 1978 | Dec 20, 1978 |
| 294 | Jyl, LLC | 1 | 1 | 0 | 0 | Aug 24, 2012 | Aug 24, 2012 |
| 295 | KBK Energy, Inc. | 1 | 1 | 0 | 0 | Sep 27, 1983 | Sep 27, 1983 |
| 296 | Koch Pipeline Company, L.P. | 1 | 1 | 0 | 0 | Jun 27, 1996 | Jun 27, 1996 |
| 297 | Kriti Exploration, Inc. | 1 | 1 | 0 | 0 | Feb 6, 1987 | Feb 6, 1987 |
| 298 | Lehnertz, G. M. | 1 | 1 | 0 | 0 | Oct 10, 1988 | Oct 10, 1988 |
| 299 | Lenert & Pettitt, Inc. | 1 | 1 | 0 | 0 | Jun 28, 1993 | Jun 28, 1993 |
| 300 | Liberty Energy Co. of Tex., Inc. | 1 | 1 | 0 | 0 | May 1, 1981 | May 1, 1981 |
505 OPERATORS · THE 300 MOST ACTIVE SHOWN · WINDOW ON THE RRC ISSUE DATE