COUNTIES · STERLING · OPERATORS
Sterling 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 | Wagner & Brown | 460 | 460 | 0 | 7 | Feb 6, 1978 | Dec 21, 1992 |
| 2 | IP Petroleum Company, Inc. | 349 | 349 | 0 | 0 | Mar 17, 1987 | Apr 23, 1999 |
| 3 | Texaco Inc. | 225 | 225 | 0 | 1 | Jun 13, 1977 | Jan 29, 1991 |
| 4 | Range Production Company | 157 | 157 | 3 | 21 | Sep 29, 1998 | Jan 29, 2013 |
| 5 | Chevron U. S. A. Inc. | 139 | 139 | 0 | 6 | Sep 26, 2002 | Dec 11, 2015 |
| 6 | American Cometra, Inc. | 118 | 118 | 0 | 13 | Mar 17, 1988 | Jun 17, 1996 |
| 7 | Steller Energy & Investment Corp | 110 | 110 | 1 | 9 | Apr 9, 1985 | Nov 5, 2015 |
| 8 | Texaco E & P Inc. | 104 | 104 | 0 | 5 | Mar 9, 1992 | Jun 27, 2002 |
| 9 | Dorchester Exploration, Inc. | 97 | 97 | 0 | 2 | Jun 10, 1977 | Jan 20, 1984 |
| 10 | Atropos Production Corporation | 95 | 95 | 0 | 109 | Jun 26, 1989 | Jun 29, 2005 |
| 11 | Bright & Co. | 93 | 93 | 0 | 7 | Aug 25, 1983 | Sep 21, 2011 |
| 12 | Pure Resources, L.P. | 75 | 75 | 0 | 0 | May 11, 2001 | Feb 23, 2006 |
| 13 | Exxon Corp. | 62 | 62 | 0 | 1 | May 8, 1978 | Nov 30, 1987 |
| 14 | Marathon Oil Company | 59 | 59 | 0 | 7 | Aug 24, 1977 | Jul 19, 2000 |
| 15 | Wagner & Brown, Ltd. | 47 | 47 | 0 | 12 | Jan 21, 1993 | May 29, 2003 |
| 16 | Chevron Midcontinent, L.P. | 46 | 46 | 0 | 5 | Apr 20, 2005 | Jan 31, 2013 |
| 17 | Hrubetz Oil Company | 46 | 46 | 0 | 0 | Aug 18, 1982 | Apr 11, 1985 |
| 18 | Champlin Petroleum Co. | 40 | 40 | 0 | 0 | Oct 30, 1978 | Oct 15, 1986 |
| 19 | Lomak Production Company | 39 | 39 | 0 | 0 | Feb 19, 1997 | Sep 3, 1998 |
| 20 | Jatam Inc. | 34 | 34 | 0 | 31 | Nov 20, 1979 | Mar 19, 1982 |
| 21 | Devon Energy Production Co, L.P. | 29 | 29 | 20 | 5 | Jun 25, 2010 | Oct 24, 2014 |
| 22 | Merit Energy Company | 27 | 27 | 0 | 0 | Feb 4, 2005 | Aug 19, 2013 |
| 23 | Quanah Petroleum Inc. | 27 | 27 | 0 | 0 | Aug 5, 1981 | Mar 2, 1983 |
| 24 | HNG Oil Company | 26 | 26 | 0 | 2 | Jun 8, 1977 | Aug 26, 1986 |
| 25 | Independence Resources Mgmt, LLC | 25 | 25 | 0 | 25 | Mar 24, 2017 | Sep 23, 2020 |
| 26 | Quantum Resources Management,llc | 25 | 25 | 0 | 0 | Mar 12, 2007 | May 23, 2014 |
| 27 | C & K Petroleum, Inc. | 23 | 23 | 0 | 0 | Sep 12, 1977 | Dec 13, 1983 |
| 28 | Levens, C. H. | 22 | 22 | 0 | 0 | Feb 4, 1985 | May 11, 2009 |
| 29 | Strand Energy, L.C. | 21 | 21 | 3 | 2 | Jul 5, 1996 | Apr 18, 2017 |
| 30 | Stoltz, Wagner & Brown | 20 | 20 | 0 | 1 | Jul 5, 1977 | Jun 8, 1978 |
| 31 | HMH Operators | 19 | 19 | 0 | 4 | Apr 20, 1978 | Sep 7, 1984 |
| 32 | Hamman Oil & Refg. Co. | 19 | 19 | 0 | 3 | Feb 4, 1997 | Oct 6, 2000 |
| 33 | Houghton Oil & Gas, Inc. | 18 | 18 | 0 | 6 | Jun 27, 1985 | May 17, 2005 |
| 34 | Southland Royalty Company | 18 | 18 | 0 | 3 | May 1, 1978 | Oct 18, 1988 |
| 35 | Crownquest Operating, LLC | 17 | 17 | 0 | 4 | Feb 10, 2006 | May 28, 2021 |
| 36 | Atoka Operating Permian, LLC | 16 | 16 | 0 | 4 | Jul 27, 2016 | Jan 8, 2020 |
| 37 | Stetson Petroleum Corp. | 16 | 16 | 0 | 0 | Jul 20, 1995 | May 21, 2010 |
| 38 | Hunt Oil Company | 15 | 15 | 0 | 0 | Apr 3, 2014 | Jan 19, 2017 |
| 39 | Union Oil Company of California | 15 | 15 | 0 | 0 | Apr 20, 1983 | Jan 26, 1993 |
| 40 | PPC Operating Company LLC | 14 | 14 | 1 | 0 | May 3, 2012 | Nov 10, 2016 |
| 41 | Mesa Petroleum Co. | 13 | 13 | 0 | 4 | Nov 21, 1978 | Feb 23, 1981 |
| 42 | Grand Banks Energy Company | 13 | 13 | 0 | 0 | Dec 30, 1977 | Apr 8, 1985 |
| 43 | Kohler Energy Corporation | 13 | 13 | 0 | 0 | Jan 10, 1989 | Mar 3, 1993 |
| 44 | Union Pacific Resources Company | 13 | 13 | 0 | 0 | Jul 27, 1987 | Sep 21, 1995 |
| 45 | Aggietech Oil, Ltd. | 12 | 12 | 0 | 2 | Dec 7, 2004 | Sep 6, 2012 |
| 46 | Firewheel Operating, LLC | 12 | 12 | 10 | 0 | May 16, 2012 | Oct 2, 2014 |
| 47 | Williams, Clayton Energy, Inc. | 12 | 12 | 0 | 0 | Dec 30, 2008 | Sep 25, 2012 |
| 48 | Koch Expl.co.div.of Koch Ind.inc | 11 | 11 | 0 | 1 | Dec 5, 1977 | Feb 22, 1985 |
| 49 | Cox, John L. | 11 | 11 | 0 | 0 | Sep 1, 1978 | Apr 9, 1996 |
| 50 | Rme Petroleum Company | 11 | 11 | 0 | 0 | Nov 14, 2001 | Nov 22, 2002 |
| 51 | Schrimsher Exploration, Ltd. | 11 | 11 | 0 | 0 | May 19, 1983 | May 16, 1984 |
| 52 | Turner Properties | 11 | 11 | 0 | 0 | Jun 23, 1977 | Dec 4, 1980 |
| 53 | Ampak Oil Company | 10 | 10 | 1 | 12 | Oct 4, 1996 | May 19, 2026 |
| 54 | Bennett, R. C., Company | 10 | 10 | 0 | 2 | Jun 14, 1990 | Jan 29, 2010 |
| 55 | Chaparral Energy, L.L.C. | 10 | 10 | 0 | 2 | Sep 21, 2007 | Sep 21, 2010 |
| 56 | Gco Drilling Company | 10 | 10 | 0 | 0 | Jan 2, 1986 | Mar 17, 1987 |
| 57 | Crown Central Petroleum Corp. | 9 | 9 | 0 | 20 | Feb 21, 1978 | Sep 19, 1983 |
| 58 | Tucker Drilling Company, Inc. | 9 | 9 | 0 | 4 | Jan 5, 1983 | Dec 6, 1983 |
| 59 | Blanks Energy Corporation | 9 | 9 | 0 | 2 | Mar 6, 1978 | Jul 1, 1982 |
| 60 | Henry Petroleum LP | 8 | 8 | 0 | 2 | Mar 9, 2005 | Apr 2, 2007 |
| 61 | Amarex, Inc. | 8 | 8 | 0 | 1 | Jun 24, 1977 | Oct 26, 1978 |
| 62 | Halvey Energy Co. | 8 | 8 | 0 | 1 | May 15, 1980 | Oct 2, 1985 |
| 63 | Kennedale Energy Corporation | 8 | 8 | 0 | 1 | Sep 30, 1983 | Dec 11, 1984 |
| 64 | Wam Energy Corporation | 8 | 8 | 0 | 1 | Apr 5, 2005 | Apr 24, 2008 |
| 65 | Bright & Schiff | 8 | 8 | 0 | 0 | Jun 24, 1977 | Sep 16, 1985 |
| 66 | OXY USA Inc. | 8 | 8 | 7 | 0 | Sep 20, 2012 | Sep 18, 2013 |
| 67 | Fasken Oil and Ranch, Ltd. | 7 | 7 | 3 | 2 | Sep 22, 1997 | Aug 22, 2005 |
| 68 | Vision Natural Resources, LP | 7 | 7 | 0 | 2 | Oct 11, 2008 | Sep 8, 2011 |
| 69 | Damson Oil Corp. | 7 | 7 | 0 | 1 | Jul 8, 1985 | Dec 20, 1985 |
| 70 | Chesapeake Operating, Inc. | 7 | 7 | 5 | 0 | Aug 1, 2011 | Dec 27, 2011 |
| 71 | Dunn Petroleum, Inc. | 7 | 7 | 0 | 0 | Apr 29, 1985 | Nov 12, 1985 |
| 72 | Indian Wells Oil Company | 7 | 7 | 0 | 0 | Dec 8, 1982 | Apr 28, 1986 |
| 73 | Tiburon Petroleum Corporation | 7 | 7 | 0 | 0 | Dec 2, 1983 | Jul 5, 1985 |
| 74 | Ultramar Production Company | 7 | 7 | 0 | 0 | Mar 14, 1991 | Nov 7, 1991 |
| 75 | American Petrofina Co. of Tex. | 6 | 6 | 0 | 13 | May 10, 1979 | Mar 19, 1985 |
| 76 | P.o.&g. Operating, LLC | 6 | 6 | 0 | 6 | Mar 7, 2008 | Jun 24, 2013 |
| 77 | Hendrix, John H. Corp. | 6 | 6 | 0 | 2 | Oct 29, 1981 | Dec 6, 1984 |
| 78 | Tuthill & Barbee | 6 | 6 | 0 | 2 | Apr 20, 1984 | Jul 1, 1985 |
| 79 | Sledge, H. G. | 6 | 6 | 0 | 1 | May 16, 1978 | Jan 10, 1985 |
| 80 | Amoco Production Company | 6 | 6 | 0 | 0 | May 14, 1985 | Dec 3, 1985 |
| 81 | Desana Corporation, The | 6 | 6 | 0 | 0 | Jan 21, 1980 | Mar 1, 1984 |
| 82 | Farmers Oil Company | 6 | 6 | 0 | 0 | Jun 8, 1987 | Oct 25, 1988 |
| 83 | Midland Res. Oper. Co., Inc. | 6 | 6 | 0 | 0 | Jul 6, 1994 | Mar 25, 1997 |
| 84 | Sterling Company | 6 | 6 | 0 | 0 | Dec 16, 1977 | Jan 10, 1979 |
| 85 | Ultramar Oil and Gas Limited | 6 | 6 | 0 | 0 | Apr 2, 1992 | Apr 3, 1992 |
| 86 | Ventures, Ltd. | 6 | 6 | 0 | 0 | Aug 29, 1978 | Mar 9, 1981 |
| 87 | Stanolind Production LLC | 5 | 5 | 1 | 8 | Jan 10, 2019 | Jul 29, 2020 |
| 88 | Burleson Petroleum, Inc. | 5 | 5 | 0 | 3 | Jan 28, 2011 | Sep 12, 2014 |
| 89 | Huffco Petroleum Corporation | 5 | 5 | 0 | 2 | Mar 24, 1982 | Nov 13, 1984 |
| 90 | TXO Production Corp. | 5 | 5 | 0 | 2 | Dec 31, 1982 | Dec 21, 1987 |
| 91 | Bennett, R. C. | 5 | 5 | 0 | 0 | Jul 20, 1978 | Apr 4, 1979 |
| 92 | Duncan Drilling Co. | 5 | 5 | 0 | 0 | Aug 28, 1979 | Oct 25, 1979 |
| 93 | Edwards Energy Corporation | 5 | 5 | 0 | 0 | Apr 16, 1982 | Apr 25, 1984 |
| 94 | Exco Resources, Inc. | 5 | 5 | 0 | 0 | Dec 9, 2008 | Mar 21, 2011 |
| 95 | Fiml Natural Resources, LLC | 5 | 5 | 0 | 0 | Aug 21, 2012 | Apr 12, 2013 |
| 96 | Hexagon Oil and Gas Inc. | 5 | 5 | 0 | 0 | Jun 26, 1980 | Dec 10, 1981 |
| 97 | Hrubetz Operating Company | 5 | 5 | 0 | 0 | Jul 11, 1985 | Apr 12, 1989 |
| 98 | Huntington Energy, L.L.C. | 5 | 5 | 0 | 0 | Jan 18, 2001 | May 25, 2001 |
| 99 | Internorth, Inc. | 5 | 5 | 0 | 0 | Aug 14, 1981 | May 10, 1983 |
| 100 | Oge Drilling, Inc. | 5 | 5 | 0 | 0 | Apr 29, 1983 | Aug 7, 1985 |
| 101 | Caraway Operating Co. | 4 | 4 | 0 | 2 | Feb 14, 1983 | Dec 16, 1991 |
| 102 | Lovelady, Ike Inc. | 4 | 4 | 0 | 2 | Aug 9, 1978 | May 8, 1979 |
| 103 | Oryx Energy Company | 4 | 4 | 0 | 2 | Jun 25, 1982 | Mar 7, 1990 |
| 104 | Ricks Exploration, Inc. | 4 | 4 | 0 | 2 | Aug 17, 1993 | Nov 2, 1994 |
| 105 | Arrington,david H. Oil & Gas,inc | 4 | 4 | 0 | 0 | Jun 3, 1987 | Feb 21, 1989 |
| 106 | Beach Exploration, Inc. | 4 | 4 | 0 | 0 | Feb 1, 1988 | Feb 2, 1988 |
| 107 | BVX Operating, Inc. | 4 | 4 | 0 | 0 | Oct 11, 2012 | Sep 12, 2014 |
| 108 | Enduring Resources, LLC | 4 | 4 | 4 | 0 | Aug 21, 2012 | Nov 15, 2012 |
| 109 | Enex Resources Corporation | 4 | 4 | 0 | 0 | Jun 26, 1989 | Dec 19, 1990 |
| 110 | MTN Energy Inc | 4 | 4 | 0 | 0 | Sep 11, 2012 | Mar 11, 2013 |
| 111 | Saga Petroleum LLC of Colorado | 4 | 4 | 0 | 0 | May 27, 2008 | Jun 14, 2013 |
| 112 | Topat Oil Corporation | 4 | 4 | 0 | 0 | Mar 28, 1990 | May 23, 2007 |
| 113 | Kek Exploration LLC | 3 | 3 | 0 | 64 | Aug 12, 2025 | Aug 28, 2025 |
| 114 | King Energy Resources | 3 | 3 | 0 | 21 | Jul 7, 2008 | Jul 8, 2008 |
| 115 | Southwest Royalties, Inc. | 3 | 3 | 0 | 12 | Apr 1, 1994 | Sep 19, 1994 |
| 116 | Atropos Exploration Company | 3 | 3 | 0 | 5 | Jun 21, 2002 | Sep 16, 2004 |
| 117 | Anadarko Production Company | 3 | 3 | 0 | 2 | Oct 9, 1980 | May 10, 1983 |
| 118 | Cobra Oil & Gas Corporation | 3 | 3 | 0 | 2 | Aug 20, 1999 | Aug 13, 2001 |
| 119 | D. & H. Enterprises | 3 | 3 | 0 | 2 | May 18, 1978 | Dec 22, 1980 |
| 120 | MGF Oil Corporation | 3 | 3 | 0 | 2 | Jun 5, 1981 | Sep 11, 1981 |
| 121 | Marline Petroleum Corporation | 3 | 3 | 0 | 1 | Sep 10, 1984 | Apr 1, 1985 |
| 122 | 4D Energy Co. | 3 | 3 | 0 | 0 | Aug 29, 1991 | Aug 29, 1991 |
| 123 | Breitling Operating Corporation | 3 | 3 | 0 | 0 | Jan 14, 2015 | Jan 25, 2016 |
| 124 | Cotton Petroleum Corp. | 3 | 3 | 0 | 0 | Jan 23, 1979 | May 15, 1980 |
| 125 | Crown Exploration Company | 3 | 3 | 0 | 0 | Oct 3, 1984 | Oct 11, 1984 |
| 126 | Enoc Petroleum Company | 3 | 3 | 0 | 0 | Nov 9, 1982 | Nov 9, 1982 |
| 127 | Galbraith, George S. | 3 | 3 | 0 | 0 | Nov 18, 1987 | Jun 14, 1990 |
| 128 | Geo-Atlan-Tex, L.L.C. | 3 | 3 | 0 | 0 | Jan 13, 2004 | May 2, 2006 |
| 129 | Gulf Oil Corp. | 3 | 3 | 0 | 0 | Jan 17, 1979 | Jul 13, 1983 |
| 130 | Hughes, Bob Oil Company | 3 | 3 | 0 | 0 | Mar 21, 2002 | Apr 22, 2009 |
| 131 | Jubilee Energy Corporation | 3 | 3 | 0 | 0 | Sep 10, 1984 | Dec 31, 1984 |
| 132 | Laredo Petroleum - Dallas, Inc. | 3 | 3 | 3 | 0 | Sep 28, 2012 | May 6, 2013 |
| 133 | Lawrence, C. F. & Assoc. Inc. | 3 | 3 | 0 | 0 | Feb 26, 1990 | Aug 23, 1990 |
| 134 | Magnatex Corporation-Oil Div. | 3 | 3 | 0 | 0 | Dec 27, 1977 | Jan 3, 1979 |
| 135 | May Petroleum, Inc. | 3 | 3 | 0 | 0 | Apr 2, 1982 | Aug 26, 1983 |
| 136 | Meg Petroleum Corp. | 3 | 3 | 0 | 0 | Sep 9, 1981 | Nov 23, 1983 |
| 137 | Ogr Operating Co, Inc. | 3 | 3 | 0 | 0 | Sep 21, 1983 | Oct 2, 1984 |
| 138 | Parten, J. R. | 3 | 3 | 0 | 0 | Dec 17, 1984 | Aug 26, 1985 |
| 139 | Prize Operating Company | 3 | 3 | 0 | 0 | Sep 21, 2000 | Jun 6, 2001 |
| 140 | Shenandoah Oil Corp. | 3 | 3 | 0 | 0 | Aug 11, 1977 | Feb 7, 1978 |
| 141 | Williams-Cody, Inc. | 3 | 3 | 0 | 0 | May 28, 1993 | Jun 1, 1993 |
| 142 | Fasken, Barbara | 2 | 2 | 0 | 12 | May 22, 1995 | May 23, 1995 |
| 143 | Southern States Energy, Inc. | 2 | 2 | 0 | 12 | Sep 13, 1984 | Jan 17, 1989 |
| 144 | EQT Production Texas, LLC | 2 | 2 | 2 | 8 | Dec 17, 2014 | Feb 25, 2015 |
| 145 | Legacy Reserves Operating LP | 2 | 2 | 0 | 5 | Oct 20, 2009 | Jun 2, 2010 |
| 146 | Ike Operating, LLC | 2 | 2 | 2 | 3 | Jul 9, 2026 | Jul 10, 2026 |
| 147 | Fina Oil & Chemical Company | 2 | 2 | 0 | 2 | Oct 22, 1987 | Nov 13, 1987 |
| 148 | Ladd Oil & Gas Corporation | 2 | 2 | 0 | 2 | Apr 1, 2004 | Jun 23, 2004 |
| 149 | Maverick Operating, LLC | 2 | 2 | 1 | 2 | Jun 7, 2017 | Feb 2, 2021 |
| 150 | McDonnold Operating, Inc. | 2 | 2 | 0 | 2 | Mar 18, 2013 | Apr 25, 2013 |
| 151 | Petroleum Equities Corp. | 2 | 2 | 0 | 2 | Nov 5, 1985 | Mar 3, 1986 |
| 152 | V-F Petroleum Inc. | 2 | 2 | 0 | 2 | May 5, 1980 | Apr 1, 2010 |
| 153 | Durham, Inc. | 2 | 2 | 0 | 1 | Jul 6, 1981 | May 15, 1985 |
| 154 | Interstate Energy Resources, Inc | 2 | 2 | 0 | 1 | Mar 7, 1979 | May 18, 1979 |
| 155 | Magnatex Petroleum Company | 2 | 2 | 0 | 1 | Sep 6, 1983 | Feb 5, 1985 |
| 156 | Meg Energy, Inc. | 2 | 2 | 0 | 1 | Nov 30, 1983 | Mar 15, 1984 |
| 157 | NRM Petroleum Corp. | 2 | 2 | 0 | 1 | Jul 31, 1979 | Feb 17, 1981 |
| 158 | Offset Oil & Gas | 2 | 2 | 0 | 1 | Oct 2, 1989 | Jul 12, 1990 |
| 159 | Snow Oil & Gas Inc. | 2 | 2 | 0 | 1 | Oct 27, 1993 | Jan 10, 1994 |
| 160 | Trisearch Inc. | 2 | 2 | 0 | 1 | Dec 17, 1990 | Jul 9, 1991 |
| 161 | Walter Oil & Gas Corporation | 2 | 2 | 1 | 1 | Sep 16, 2009 | Dec 10, 2009 |
| 162 | Waskom, Reagan Operating Company | 2 | 2 | 0 | 1 | Aug 23, 1983 | Sep 25, 1984 |
| 163 | BFP Black Canyon, LLC | 2 | 2 | 0 | 0 | Jul 16, 2008 | Jan 26, 2010 |
| 164 | C. H. Levens, Inc. | 2 | 2 | 0 | 0 | Aug 12, 2011 | Aug 12, 2011 |
| 165 | Cleere Operating Company | 2 | 2 | 0 | 0 | Mar 28, 1985 | Apr 18, 1989 |
| 166 | Cody Energy LLC | 2 | 2 | 0 | 0 | Nov 22, 2004 | Nov 24, 2004 |
| 167 | Davis Petroleum | 2 | 2 | 0 | 0 | Dec 13, 1982 | Dec 13, 1982 |
| 168 | El Paso Natural Gas Co. | 2 | 2 | 0 | 0 | Jan 11, 1989 | Jun 4, 1993 |
| 169 | Escondido Operating | 2 | 2 | 0 | 0 | Apr 10, 1985 | Sep 27, 1985 |
| 170 | Foreland Operating, LLC | 2 | 2 | 2 | 0 | Nov 30, 2012 | Feb 13, 2013 |
| 171 | Hanson Corporation | 2 | 2 | 0 | 0 | Oct 17, 1979 | Nov 1, 1979 |
| 172 | HMH Operators, Inc. | 2 | 2 | 0 | 0 | Dec 13, 1989 | Jan 20, 1998 |
| 173 | H & S Production, Inc. | 2 | 2 | 0 | 0 | Jan 15, 1997 | Dec 30, 1997 |
| 174 | J. C. Oil Co. | 2 | 2 | 0 | 0 | Jul 10, 1979 | Jan 25, 1980 |
| 175 | Joriah Oil & Gas, Inc. | 2 | 2 | 0 | 0 | Mar 9, 2015 | Mar 9, 2015 |
| 176 | K. & W. Oil Co.-Ackerly | 2 | 2 | 0 | 0 | Jul 11, 1989 | Jul 11, 1989 |
| 177 | Mariah Energy Corp. | 2 | 2 | 0 | 0 | Dec 11, 1992 | Dec 21, 1993 |
| 178 | Meridian Oil Inc. | 2 | 2 | 0 | 0 | Aug 1, 1988 | Oct 19, 1988 |
| 179 | Mulloy Operating, Inc. | 2 | 2 | 0 | 0 | Sep 17, 2007 | Aug 29, 2008 |
| 180 | Pear Valley Investment Co.,inc. | 2 | 2 | 0 | 0 | Jun 10, 1983 | Sep 21, 1983 |
| 181 | Placer Dome U.S. Inc. | 2 | 2 | 0 | 0 | Nov 14, 1990 | Nov 15, 1990 |
| 182 | San Angelo Investment Co | 2 | 2 | 0 | 0 | Mar 7, 1979 | Sep 1, 1982 |
| 183 | Sanchez-O'Brien Oil & Gas Corp. | 2 | 2 | 0 | 0 | Nov 25, 1981 | Aug 5, 1982 |
| 184 | Tamarack Petroleum Company, Inc. | 2 | 2 | 0 | 0 | Nov 23, 1987 | Jun 15, 1988 |
| 185 | Texas American Oil Corp. | 2 | 2 | 0 | 0 | Mar 23, 1984 | Jul 9, 1984 |
| 186 | Texas SWD Co., Inc. | 2 | 2 | 0 | 0 | Mar 5, 2013 | Mar 5, 2013 |
| 187 | Transierra Exploration Corp. | 2 | 2 | 0 | 0 | Jun 5, 1984 | Mar 25, 1985 |
| 188 | Trio Consulting & Management,llc | 2 | 2 | 0 | 0 | Oct 4, 2004 | Nov 9, 2004 |
| 189 | TXP, Incorporated | 2 | 2 | 0 | 0 | Mar 29, 2006 | Jun 7, 2007 |
| 190 | Urban Oil & Gas Group, LLC | 2 | 2 | 0 | 0 | Oct 9, 2014 | May 16, 2018 |
| 191 | Black River Operating LLC | 1 | 1 | 0 | 91 | Mar 26, 2025 | Mar 26, 2025 |
| 192 | Winn Operating, LLC | 1 | 1 | 0 | 41 | Sep 18, 2025 | Sep 18, 2025 |
| 193 | Tall Dune Resources, LLC | 1 | 1 | 0 | 15 | Feb 14, 2024 | Feb 14, 2024 |
| 194 | SS Operating LLC | 1 | 1 | 0 | 7 | Apr 11, 2019 | Apr 11, 2019 |
| 195 | Roca Resource Company, Inc. | 1 | 1 | 0 | 3 | Sep 29, 1993 | Sep 29, 1993 |
| 196 | Wigington, James Robert | 1 | 1 | 0 | 3 | May 11, 1990 | May 11, 1990 |
| 197 | Adobe Oil & Gas Corp. | 1 | 1 | 0 | 2 | Oct 15, 1985 | Oct 15, 1985 |
| 198 | Keystone Energy Oil & Gas, Inc. | 1 | 1 | 0 | 2 | Nov 29, 1988 | Nov 29, 1988 |
| 199 | National Energy Group, Inc. | 1 | 1 | 0 | 2 | Sep 28, 1994 | Sep 28, 1994 |
| 200 | Ped Oil Corporation | 1 | 1 | 0 | 2 | Jul 17, 2008 | Jul 17, 2008 |
| 201 | Phillips Petroleum Company | 1 | 1 | 0 | 2 | Mar 4, 1987 | Mar 4, 1987 |
| 202 | Astro Energy Corporation | 1 | 1 | 0 | 1 | Jun 30, 1981 | Jun 30, 1981 |
| 203 | Blanks, W. C. | 1 | 1 | 0 | 1 | Jan 5, 1979 | Jan 5, 1979 |
| 204 | Boyd, Foy Associates, Inc. | 1 | 1 | 0 | 1 | Nov 1, 1977 | Nov 1, 1977 |
| 205 | Collins & Ware, Inc. | 1 | 1 | 0 | 1 | Jul 5, 1994 | Jul 5, 1994 |
| 206 | EP Operating Company | 1 | 1 | 0 | 1 | Aug 12, 1987 | Aug 12, 1987 |
| 207 | Fuller Petroleum, Inc. | 1 | 1 | 0 | 1 | Aug 29, 1984 | Aug 29, 1984 |
| 208 | Hannathon Petroleum, LLC | 1 | 1 | 0 | 1 | Jun 13, 2011 | Jun 13, 2011 |
| 209 | Mitchell Energy Corporation | 1 | 1 | 0 | 1 | Dec 5, 1985 | Dec 5, 1985 |
| 210 | Northern Natural Gas Co. | 1 | 1 | 0 | 1 | Mar 29, 1979 | Mar 29, 1979 |
| 211 | Sharp Image Energy, Inc. | 1 | 1 | 0 | 1 | Mar 6, 2001 | Mar 6, 2001 |
| 212 | Wilson, Wm. B. Exploration Inc. | 1 | 1 | 0 | 1 | Sep 6, 1991 | Sep 6, 1991 |
| 213 | Woods Petroleum Corporation | 1 | 1 | 0 | 1 | Dec 5, 1983 | Dec 5, 1983 |
| 214 | Adams Exploration Co. | 1 | 1 | 0 | 0 | Jun 17, 1982 | Jun 17, 1982 |
| 215 | Adkins, R. L. Corp. | 1 | 1 | 0 | 0 | Jun 16, 1994 | Jun 16, 1994 |
| 216 | Alon USA, LP | 1 | 1 | 0 | 0 | May 22, 2002 | May 22, 2002 |
| 217 | Alpine Petroleum | 1 | 1 | 0 | 0 | Sep 7, 2011 | Sep 7, 2011 |
| 218 | American Petrofina Pipe Line Co. | 1 | 1 | 0 | 0 | Aug 22, 1990 | Aug 22, 1990 |
| 219 | American Public Energy Co. | 1 | 1 | 0 | 0 | Jul 20, 1979 | Jul 20, 1979 |
| 220 | Anadarko E&P Company LP | 1 | 1 | 0 | 0 | Nov 20, 2002 | Nov 20, 2002 |
| 221 | Arrowhead Operating Inc. | 1 | 1 | 0 | 0 | Apr 28, 2004 | Apr 28, 2004 |
| 222 | Atmos Pipeline - Texas | 1 | 1 | 0 | 0 | May 30, 2006 | May 30, 2006 |
| 223 | Atoka Operating, Inc. | 1 | 1 | 0 | 0 | May 17, 2016 | May 17, 2016 |
| 224 | BC Operating, Inc. | 1 | 1 | 0 | 0 | Apr 3, 1997 | Apr 3, 1997 |
| 225 | Bennett, R. C. & Ryan, J. C. | 1 | 1 | 0 | 0 | Apr 11, 1978 | Apr 11, 1978 |
| 226 | Braden Exploration II, LLC | 1 | 1 | 1 | 0 | Sep 6, 2013 | Sep 6, 2013 |
| 227 | Brown, H. L., Jr. | 1 | 1 | 0 | 0 | Mar 19, 1990 | Mar 19, 1990 |
| 228 | Burns, R. L. Corporation | 1 | 1 | 0 | 0 | Jul 21, 1977 | Jul 21, 1977 |
| 229 | Byrd Operating Company | 1 | 1 | 0 | 0 | Jan 17, 2006 | Jan 17, 2006 |
| 230 | Cabot Petroleum Corporation | 1 | 1 | 0 | 0 | Mar 8, 1984 | Mar 8, 1984 |
| 231 | Campana Petroleum Co. | 1 | 1 | 0 | 0 | Jan 4, 1980 | Jan 4, 1980 |
| 232 | Chambers Exploration, Inc. | 1 | 1 | 0 | 0 | Jun 15, 1983 | Jun 15, 1983 |
| 233 | Chambers & Kennedy | 1 | 1 | 0 | 0 | Sep 8, 1983 | Sep 8, 1983 |
| 234 | Coastal Oil & Gas Corporation | 1 | 1 | 0 | 0 | Oct 20, 1980 | Oct 20, 1980 |
| 235 | Colter Operating, Inc. | 1 | 1 | 0 | 0 | Mar 4, 1991 | Mar 4, 1991 |
| 236 | Cone & Petree Oil & Gas Exp. Inc | 1 | 1 | 0 | 0 | Dec 8, 1986 | Dec 8, 1986 |
| 237 | Conoco Inc. | 1 | 1 | 0 | 0 | Jun 2, 1980 | Jun 2, 1980 |
| 238 | Costex Resources, Inc. | 1 | 1 | 0 | 0 | Mar 19, 1985 | Mar 19, 1985 |
| 239 | Costilla Petroleum Corporation | 1 | 1 | 0 | 0 | Oct 16, 1995 | Oct 16, 1995 |
| 240 | DCB Oil & Gas, Inc. | 1 | 1 | 0 | 0 | May 5, 1981 | May 5, 1981 |
| 241 | Diamond Chemicals Company | 1 | 1 | 0 | 0 | Mar 20, 1979 | Mar 20, 1979 |
| 242 | Duffield, O. F. | 1 | 1 | 0 | 0 | May 30, 1984 | May 30, 1984 |
| 243 | Dyad Associates | 1 | 1 | 0 | 0 | Feb 8, 1983 | Feb 8, 1983 |
| 244 | Eastland Oil Company, The | 1 | 1 | 0 | 0 | Sep 27, 1978 | Sep 27, 1978 |
| 245 | Edwards Energy Corp. | 1 | 1 | 0 | 0 | Jun 27, 1983 | Jun 27, 1983 |
| 246 | Edwards, Jack | 1 | 1 | 0 | 0 | Dec 20, 1979 | Dec 20, 1979 |
| 247 | Elco Oil & Gas | 1 | 1 | 0 | 0 | May 12, 1983 | May 12, 1983 |
| 248 | Energy Equity, Inc. | 1 | 1 | 0 | 0 | Sep 21, 1981 | Sep 21, 1981 |
| 249 | Enserch Exploration, Inc | 1 | 1 | 0 | 0 | Dec 7, 1983 | Dec 7, 1983 |
| 250 | Enterprise Products Operating LP | 1 | 1 | 0 | 0 | Dec 29, 2005 | Dec 29, 2005 |
| 251 | Enterprise Products Texas OP LLC | 1 | 1 | 0 | 0 | Sep 6, 2017 | Sep 6, 2017 |
| 252 | Estate Oil & Gas Corp. | 1 | 1 | 0 | 0 | Sep 20, 1989 | Sep 20, 1989 |
| 253 | EXL Petroleum, LP | 1 | 1 | 0 | 0 | May 16, 2008 | May 16, 2008 |
| 254 | Explo Oil, Inc. | 1 | 1 | 0 | 0 | Dec 14, 1989 | Dec 14, 1989 |
| 255 | Fasken, David | 1 | 1 | 0 | 0 | Feb 12, 1986 | Feb 12, 1986 |
| 256 | Fiveash Operating Company | 1 | 1 | 0 | 0 | Dec 6, 1984 | Dec 6, 1984 |
| 257 | Forest Oil Corp. | 1 | 1 | 0 | 0 | Mar 20, 1981 | Mar 20, 1981 |
| 258 | Galbraith, George S., Estate Of | 1 | 1 | 0 | 0 | Aug 6, 1991 | Aug 6, 1991 |
| 259 | Getty Oil Co. | 1 | 1 | 0 | 0 | Dec 20, 1983 | Dec 20, 1983 |
| 260 | Hendon Exploration, Inc. | 1 | 1 | 0 | 0 | Jun 29, 1983 | Jun 29, 1983 |
| 261 | Hillin Prod. Co. | 1 | 1 | 0 | 0 | Mar 20, 1979 | Mar 20, 1979 |
| 262 | His Industries Inc. | 1 | 1 | 0 | 0 | Aug 26, 1982 | Aug 26, 1982 |
| 263 | Holland Resources Co. | 1 | 1 | 0 | 0 | Feb 9, 1984 | Feb 9, 1984 |
| 264 | Holloway Oil Company | 1 | 1 | 0 | 0 | Oct 17, 1985 | Oct 17, 1985 |
| 265 | Hunt Petroleum Corporation | 1 | 1 | 0 | 0 | Feb 10, 1986 | Feb 10, 1986 |
| 266 | Hytech Energy Corporation | 1 | 1 | 0 | 0 | Jan 4, 1979 | Jan 4, 1979 |
| 267 | Jennings Energy Company | 1 | 1 | 0 | 0 | Jun 25, 1984 | Jun 25, 1984 |
| 268 | Knightsbridge Petroleum Corp. | 1 | 1 | 0 | 0 | Feb 25, 1986 | Feb 25, 1986 |
| 269 | Lasmo Energy Corporation | 1 | 1 | 0 | 0 | Oct 12, 1990 | Oct 12, 1990 |
| 270 | Lea Corporation | 1 | 1 | 0 | 0 | Mar 12, 1996 | Mar 12, 1996 |
| 271 | Lja Energy Resources, Inc. | 1 | 1 | 0 | 0 | Nov 7, 1984 | Nov 7, 1984 |
| 272 | Mapco Inc. | 1 | 1 | 0 | 0 | Jul 20, 1977 | Jul 20, 1977 |
| 273 | Maralo, Inc. | 1 | 1 | 0 | 0 | Jan 21, 1982 | Jan 21, 1982 |
| 274 | Mineral Development, Inc. | 1 | 1 | 0 | 0 | Dec 19, 1978 | Dec 19, 1978 |
| 275 | Nortex Gas & Oil Company | 1 | 1 | 0 | 0 | Oct 13, 1982 | Oct 13, 1982 |
| 276 | Oge Drilling USA, Inc. | 1 | 1 | 0 | 0 | Jul 31, 1992 | Jul 31, 1992 |
| 277 | Omimex Energy, Inc. | 1 | 1 | 0 | 0 | Sep 3, 2014 | Sep 3, 2014 |
| 278 | Osr Oil & Gas Company | 1 | 1 | 0 | 0 | Apr 24, 1997 | Apr 24, 1997 |
| 279 | Palmco Corporation | 1 | 1 | 0 | 0 | Dec 8, 1977 | Dec 8, 1977 |
| 280 | Pennzoil Company | 1 | 1 | 0 | 0 | Jun 9, 1981 | Jun 9, 1981 |
| 281 | Permian Resources & Prod., Inc. | 1 | 1 | 0 | 0 | May 2, 1984 | May 2, 1984 |
| 282 | Petro. Expl. & Dev. Funds, Inc. | 1 | 1 | 0 | 0 | Nov 28, 1979 | Nov 28, 1979 |
| 283 | Pharaoh Oil & Gas, Inc. | 1 | 1 | 0 | 0 | Sep 20, 1999 | Sep 20, 1999 |
| 284 | Phoenix Hydrocarbons Operating | 1 | 1 | 0 | 0 | Jan 26, 1995 | Jan 26, 1995 |
| 285 | Pitts Energy Co. | 1 | 1 | 0 | 0 | Aug 17, 1995 | Aug 17, 1995 |
| 286 | Powell, A. Brandt Co. | 1 | 1 | 0 | 0 | Apr 4, 2001 | Apr 4, 2001 |
| 287 | Probity SWD, LLC | 1 | 1 | 0 | 0 | Oct 21, 2013 | Oct 21, 2013 |
| 288 | Relentless Permian Operating LLC | 1 | 1 | 0 | 0 | Dec 10, 2019 | Dec 10, 2019 |
| 289 | Rendova Oil Co | 1 | 1 | 0 | 0 | Jun 28, 1983 | Jun 28, 1983 |
| 290 | Resources Investment Corporation | 1 | 1 | 0 | 0 | Jan 16, 1978 | Jan 16, 1978 |
| 291 | R K Petroleum Corporation | 1 | 1 | 0 | 0 | Jan 14, 1983 | Jan 14, 1983 |
| 292 | Saguaro Injections LLC | 1 | 1 | 0 | 0 | May 10, 2013 | May 10, 2013 |
| 293 | Samson Lone Star, LLC | 1 | 1 | 0 | 0 | Jun 11, 2009 | Jun 11, 2009 |
| 294 | Samson Resources Company | 1 | 1 | 0 | 0 | Oct 17, 1978 | Oct 17, 1978 |
| 295 | Sherrod, C. H. | 1 | 1 | 0 | 0 | Jan 26, 1978 | Jan 26, 1978 |
| 296 | S & J Operating Co. | 1 | 1 | 0 | 0 | Dec 2, 1991 | Dec 2, 1991 |
| 297 | Slant Operating, LLC | 1 | 1 | 0 | 0 | May 7, 2021 | May 7, 2021 |
| 298 | Sledge, H. G. Inc. | 1 | 1 | 0 | 0 | Aug 30, 1990 | Aug 30, 1990 |
| 299 | South Texas Operating Company | 1 | 1 | 0 | 0 | Apr 10, 1991 | Apr 10, 1991 |
| 300 | Spectrum Oil & Gas Co. | 1 | 1 | 0 | 0 | Mar 31, 1983 | Mar 31, 1983 |
453 OPERATORS · THE 300 MOST ACTIVE SHOWN · WINDOW ON THE RRC ISSUE DATE