Austin 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 | Exxon Corp. | 288 | 288 | 0 | 81 | Jun 15, 1977 | Nov 21, 1997 |
| 2 | Enhanced Energy Partners Corp | 157 | 157 | 0 | 179 | May 23, 2007 | Sep 21, 2026 |
| 3 | Shamrock Oil Co. | 57 | 57 | 0 | 2 | Sep 7, 1989 | Jul 15, 1998 |
| 4 | Bridas Energy USA, Inc. | 41 | 41 | 0 | 0 | May 25, 2001 | Jul 26, 2001 |
| 5 | Union Pacific Resources Company | 30 | 30 | 30 | 1 | Mar 31, 1994 | Jun 5, 2000 |
| 6 | Sandalwood Exploration, L.P. | 27 | 27 | 0 | 2 | Jan 17, 2008 | Aug 20, 2012 |
| 7 | Magnum Producing, LP | 24 | 24 | 0 | 11 | Feb 4, 2004 | Apr 3, 2023 |
| 8 | Verdun Oil & Gas LLC | 22 | 22 | 22 | 10 | May 31, 2019 | Sep 17, 2026 |
| 9 | Magnum Producing & Operating Co. | 21 | 21 | 0 | 5 | Nov 5, 1990 | Jan 9, 2004 |
| 10 | Arriola Operating & Consltg Inc. | 21 | 21 | 0 | 0 | May 23, 2008 | Apr 8, 2009 |
| 11 | Jamex, Inc. | 20 | 20 | 0 | 22 | Sep 25, 2000 | Jan 3, 2006 |
| 12 | T-N-T Engineering, Inc. | 20 | 20 | 0 | 3 | Feb 19, 2004 | May 23, 2007 |
| 13 | Alamo Pet. Co. | 18 | 18 | 0 | 1 | Aug 29, 1978 | Jul 3, 1980 |
| 14 | Strand Energy, L.C. | 17 | 17 | 0 | 17 | Mar 13, 2003 | Aug 30, 2024 |
| 15 | Superior Oil Company, The | 16 | 16 | 0 | 0 | Oct 20, 1978 | Jun 15, 1984 |
| 16 | Prairie Producing Company | 15 | 15 | 0 | 9 | Aug 15, 1977 | Jun 4, 1984 |
| 17 | A.C.T. Operating Company | 15 | 15 | 0 | 0 | Jun 7, 2006 | Nov 14, 2007 |
| 18 | Etoco Incorporated | 15 | 15 | 0 | 0 | Jul 27, 1998 | Mar 18, 2005 |
| 19 | Anadarko E&P Company LP | 14 | 14 | 14 | 2 | Dec 20, 2002 | Aug 8, 2006 |
| 20 | Samson Resources Company | 13 | 13 | 0 | 6 | Jun 20, 1979 | Nov 6, 1985 |
| 21 | Ranger Oil Company | 13 | 13 | 0 | 3 | Oct 4, 1977 | May 31, 1983 |
| 22 | Rio Brazos Resources Company | 13 | 13 | 0 | 0 | Jul 22, 1987 | Aug 24, 1990 |
| 23 | Atapco | 12 | 12 | 0 | 9 | Aug 24, 1981 | Sep 5, 1991 |
| 24 | Elliott Oil & Gas Operating Co. | 12 | 12 | 0 | 5 | Nov 10, 2004 | Nov 12, 2010 |
| 25 | Mission Resources Corporation | 12 | 12 | 0 | 0 | Aug 7, 2001 | May 14, 2003 |
| 26 | Elliott Oil & Gas Company | 11 | 11 | 0 | 2 | Mar 5, 1999 | Jun 11, 2003 |
| 27 | SV Energy Company, LLC | 11 | 11 | 0 | 1 | May 30, 2013 | Feb 10, 2016 |
| 28 | Agoil, Inc. | 11 | 11 | 0 | 0 | Feb 1, 1979 | Dec 8, 1981 |
| 29 | Amax Petroleum Corporation | 9 | 9 | 0 | 3 | Oct 17, 1980 | Jun 29, 1982 |
| 30 | Geosouthern Energy Corporation | 9 | 9 | 0 | 3 | Jul 21, 2006 | Apr 13, 2007 |
| 31 | Dorchester Exploration, Inc. | 9 | 9 | 0 | 1 | Jun 8, 1977 | Feb 28, 1978 |
| 32 | Famcor Oil, Inc | 8 | 8 | 0 | 3 | Jan 8, 1991 | Jan 3, 1995 |
| 33 | R.T.C. Resources, L.P. | 8 | 8 | 0 | 2 | Apr 19, 2005 | Jun 9, 2006 |
| 34 | Jamex II Ltd., L.L.P. | 8 | 8 | 0 | 0 | Jan 23, 2001 | May 9, 2002 |
| 35 | Landrum Operating Co., Inc. | 8 | 8 | 0 | 0 | Dec 10, 1981 | May 24, 1982 |
| 36 | Nicholas, J. W. | 8 | 8 | 0 | 0 | May 26, 1978 | Dec 11, 1979 |
| 37 | Tema Oil and Gas Company | 7 | 7 | 0 | 7 | May 7, 1999 | Jan 26, 2010 |
| 38 | Comet Oil & Gas, Inc. | 7 | 7 | 0 | 1 | Dec 16, 1991 | Oct 21, 1994 |
| 39 | Lone Wolf Operating Company | 7 | 7 | 0 | 1 | Jun 27, 2003 | Mar 30, 2004 |
| 40 | Canyon Petroleum Company | 7 | 7 | 0 | 0 | Aug 21, 1981 | Sep 28, 1981 |
| 41 | Goodrich Oil Company | 7 | 7 | 0 | 0 | Jan 4, 1990 | Jan 10, 1992 |
| 42 | Pierce Junction Petroleum Inc. | 7 | 7 | 0 | 0 | Feb 24, 1981 | Feb 12, 1999 |
| 43 | Smith, L. C. | 7 | 7 | 0 | 0 | Mar 15, 1988 | Sep 7, 1990 |
| 44 | Mid-Gulf, Inc. | 6 | 6 | 0 | 90 | Aug 14, 1992 | Jun 22, 1995 |
| 45 | Placid Oil Company | 6 | 6 | 0 | 1 | Dec 13, 1978 | Aug 2, 1982 |
| 46 | Synergy Oil & Gas, Inc. (A) | 6 | 6 | 0 | 0 | Jan 14, 1999 | Jan 31, 2001 |
| 47 | Etoco, L.P. | 5 | 5 | 0 | 13 | Oct 4, 2005 | Oct 3, 2006 |
| 48 | TXO Production Corp. | 5 | 5 | 0 | 2 | Oct 29, 1984 | Mar 4, 1986 |
| 49 | Anschutz Corporation, The | 5 | 5 | 0 | 1 | Oct 15, 1984 | Aug 20, 1985 |
| 50 | Costilla Energy, Inc. | 5 | 5 | 0 | 1 | Oct 5, 1998 | Sep 23, 1999 |
| 51 | Texegy Operating Company LLC | 5 | 5 | 0 | 1 | Oct 8, 2014 | May 31, 2019 |
| 52 | Reb Petroleum Co. | 5 | 5 | 0 | 0 | Jun 6, 1977 | Sep 15, 1980 |
| 53 | Transtexas Gas Corporation | 5 | 5 | 0 | 0 | Jan 13, 1999 | Dec 16, 1999 |
| 54 | Pomykal, Verde Oil Co | 4 | 4 | 0 | 13 | Sep 6, 2001 | Sep 7, 2001 |
| 55 | Phillips Petroleum Company | 4 | 4 | 0 | 3 | Jul 2, 1999 | Dec 9, 1999 |
| 56 | Goodrich Petroleum Company | 4 | 4 | 0 | 2 | May 15, 1998 | Jun 9, 2000 |
| 57 | Merit Energy Company | 4 | 4 | 0 | 2 | Oct 30, 1991 | Jul 6, 1993 |
| 58 | HS Resources, Inc. | 4 | 4 | 0 | 1 | Apr 30, 1997 | Jul 22, 1997 |
| 59 | Millican Oil Company | 4 | 4 | 0 | 1 | Jun 22, 1977 | May 8, 1978 |
| 60 | Cico Oil & Gas Company | 4 | 4 | 0 | 0 | Feb 7, 1995 | Apr 21, 2005 |
| 61 | Halcon Operating Co., Inc. | 4 | 4 | 0 | 0 | May 21, 2012 | Nov 8, 2013 |
| 62 | Hardwick Oil Company | 4 | 4 | 0 | 0 | Oct 24, 1980 | Oct 22, 1985 |
| 63 | Oleum Incorporated | 4 | 4 | 0 | 0 | Sep 22, 1977 | Jun 2, 1980 |
| 64 | Carr Resources, Inc. | 3 | 3 | 3 | 1 | Jul 30, 2019 | Nov 28, 2022 |
| 65 | Convest Energy Corporation | 3 | 3 | 0 | 1 | Aug 8, 1979 | Jun 27, 1985 |
| 66 | Indexgeo & Associates, Inc. | 3 | 3 | 0 | 1 | Jul 12, 1993 | Sep 6, 2002 |
| 67 | Westpark Petroleum, Inc. | 3 | 3 | 0 | 1 | Apr 11, 1997 | Apr 11, 1997 |
| 68 | American Cascade Energy, Inc. | 3 | 3 | 1 | 0 | Dec 18, 1992 | Mar 15, 1996 |
| 69 | American Cometra, Inc. | 3 | 3 | 0 | 0 | Aug 31, 1987 | Nov 15, 1989 |
| 70 | Ampolex (Texas) Inc. | 3 | 3 | 0 | 0 | May 9, 1988 | Jul 3, 1989 |
| 71 | Burns Production Corporation | 3 | 3 | 0 | 0 | Sep 2, 1994 | Aug 3, 2004 |
| 72 | Cochran Energy, LLC | 3 | 3 | 0 | 0 | Feb 4, 2013 | Jul 17, 2018 |
| 73 | Davis Petroleum Corp. | 3 | 3 | 0 | 0 | Nov 8, 2013 | Sep 30, 2014 |
| 74 | Energy Development Corp. | 3 | 3 | 0 | 0 | Feb 17, 1989 | Nov 13, 1991 |
| 75 | Hilcorp Energy Company | 3 | 3 | 0 | 0 | Nov 15, 1996 | Apr 22, 1997 |
| 76 | K.Z.I. Oil & Gas Company | 3 | 3 | 0 | 0 | May 8, 1990 | Sep 28, 1994 |
| 77 | Pogo Producing Co. | 3 | 3 | 0 | 0 | Apr 18, 1979 | Jul 26, 1985 |
| 78 | Rme Petroleum Company | 3 | 3 | 3 | 0 | Sep 17, 2001 | Jul 22, 2002 |
| 79 | Square Mile Energy, L.L.C. | 3 | 3 | 0 | 0 | Mar 28, 2002 | Aug 30, 2018 |
| 80 | Texical, Inc. | 3 | 3 | 0 | 0 | Feb 5, 1998 | Sep 14, 1998 |
| 81 | TX Of&gc, LLC | 3 | 3 | 0 | 0 | Jun 10, 2009 | Jan 14, 2014 |
| 82 | Chevron U. S. A. Inc. | 2 | 2 | 1 | 7 | Mar 21, 2000 | Nov 1, 2002 |
| 83 | Damson Oil Corp. | 2 | 2 | 0 | 2 | Jun 21, 1984 | Feb 12, 1986 |
| 84 | Marathon Oil Company | 2 | 2 | 1 | 2 | Jul 14, 1978 | Dec 11, 1998 |
| 85 | Chesapeake Operating, Inc. | 2 | 2 | 2 | 1 | Apr 19, 1999 | Apr 19, 1999 |
| 86 | Geiser Operating, Inc. | 2 | 2 | 0 | 1 | Feb 26, 2009 | Apr 7, 2009 |
| 87 | Hilliard Oil & Gas, Inc. | 2 | 2 | 0 | 1 | Oct 4, 1977 | Aug 15, 1978 |
| 88 | Trace Oil & Gas Company | 2 | 2 | 0 | 1 | Jul 12, 1989 | Dec 5, 1989 |
| 89 | A-N-A Operating Company, Inc. | 2 | 2 | 0 | 0 | Jun 17, 1996 | Jul 19, 1996 |
| 90 | Andress Petroleum, Inc. | 2 | 2 | 0 | 0 | Nov 30, 1983 | Dec 29, 1983 |
| 91 | Austin Resources Corporation | 2 | 2 | 0 | 0 | Sep 23, 1994 | Nov 1, 1994 |
| 92 | Blezinger Production | 2 | 2 | 0 | 0 | Aug 27, 1992 | Jul 8, 1998 |
| 93 | Brenham Drilling Co. | 2 | 2 | 0 | 0 | Jul 21, 1978 | Apr 16, 1981 |
| 94 | Cardinal Well Service Inc. | 2 | 2 | 0 | 0 | Mar 22, 1983 | Apr 25, 1983 |
| 95 | Cymraec Resources, Inc. | 2 | 2 | 0 | 0 | Sep 11, 2006 | Sep 11, 2006 |
| 96 | Dreyfus, Louis Natural Gas Corp | 2 | 2 | 0 | 0 | May 9, 2001 | May 9, 2001 |
| 97 | Great Texas Oil & Gas Trust | 2 | 2 | 0 | 0 | Oct 14, 1999 | Oct 17, 2000 |
| 98 | Hanover Management Co. | 2 | 2 | 0 | 0 | Sep 23, 1981 | Aug 2, 1982 |
| 99 | High Plains Gas Systems, Inc. | 2 | 2 | 0 | 0 | Dec 17, 2003 | Dec 17, 2003 |
| 100 | Lowmar Exploration Company | 2 | 2 | 0 | 0 | Jan 9, 1987 | Jan 9, 1987 |
| 101 | Moose Oil & Gas Co. | 2 | 2 | 0 | 0 | Jul 29, 1992 | Jul 29, 1992 |
| 102 | North Central Oil Corp. | 2 | 2 | 0 | 0 | Jan 11, 1980 | Jan 13, 1993 |
| 103 | Odegard Energy, Inc. | 2 | 2 | 0 | 0 | Mar 28, 2002 | Mar 28, 2002 |
| 104 | OXY Petr. Inc | 2 | 2 | 0 | 0 | Sep 17, 1979 | Mar 26, 1980 |
| 105 | Prime Natural Resources Inc | 2 | 2 | 0 | 0 | Mar 10, 2000 | Mar 10, 2000 |
| 106 | Pure Energy Company | 2 | 2 | 0 | 0 | Jun 17, 1983 | Nov 19, 1984 |
| 107 | Smith-Melton Oil Producers | 2 | 2 | 0 | 0 | Apr 11, 1986 | Oct 15, 1986 |
| 108 | Westlands Resources Corporation | 2 | 2 | 0 | 0 | Jan 9, 1996 | Jan 9, 1996 |
| 109 | Bear Creek Energy, LLC | 1 | 1 | 0 | 22 | Oct 26, 2026 | Oct 26, 2026 |
| 110 | Sun Exploration & Production Co. | 1 | 1 | 0 | 9 | Oct 27, 1977 | Oct 27, 1977 |
| 111 | Shell Oil Company | 1 | 1 | 0 | 4 | Oct 9, 1980 | Oct 9, 1980 |
| 112 | Co-Kal Oil Company | 1 | 1 | 0 | 2 | Nov 18, 1986 | Nov 18, 1986 |
| 113 | Lone Oak Energy Inc | 1 | 1 | 0 | 2 | Jul 1, 1999 | Jul 1, 1999 |
| 114 | Basin Operating Co. Ltd. | 1 | 1 | 0 | 1 | Jan 23, 1980 | Jan 23, 1980 |
| 115 | Gulfstream Petroleum Corp. | 1 | 1 | 0 | 1 | Jun 12, 1978 | Jun 12, 1978 |
| 116 | Powell-McCarroll Partnership | 1 | 1 | 0 | 1 | Feb 6, 2009 | Feb 6, 2009 |
| 117 | Sun Expl. & Prod. Co.-Corpus | 1 | 1 | 0 | 1 | Apr 10, 1980 | Apr 10, 1980 |
| 118 | Allegro Investments, Inc. | 1 | 1 | 0 | 0 | Dec 11, 2003 | Dec 11, 2003 |
| 119 | Apache Corporation | 1 | 1 | 1 | 0 | Jul 29, 2008 | Jul 29, 2008 |
| 120 | Bargo Energy Company | 1 | 1 | 0 | 0 | Feb 18, 2000 | Feb 18, 2000 |
| 121 | Beta Operating Company, LLC | 1 | 1 | 0 | 0 | Nov 13, 2001 | Nov 13, 2001 |
| 122 | Bradco Oil & Gas Co. | 1 | 1 | 0 | 0 | Mar 6, 1978 | Mar 6, 1978 |
| 123 | Buscar Oil Company | 1 | 1 | 0 | 0 | Dec 29, 1989 | Dec 29, 1989 |
| 124 | Cag Petroleum Corp. | 1 | 1 | 0 | 0 | Apr 17, 1991 | Apr 17, 1991 |
| 125 | Callon Petroleum Co. | 1 | 1 | 0 | 0 | Dec 30, 1983 | Dec 30, 1983 |
| 126 | Calloway Exploration, Inc. | 1 | 1 | 0 | 0 | May 21, 2012 | May 21, 2012 |
| 127 | C.B. Resources Inc | 1 | 1 | 0 | 0 | Apr 25, 1983 | Apr 25, 1983 |
| 128 | Centex Oil & Gas, Incorporated | 1 | 1 | 0 | 0 | Sep 20, 1979 | Sep 20, 1979 |
| 129 | CG Operating, Inc. | 1 | 1 | 0 | 0 | Jul 1, 1999 | Jul 1, 1999 |
| 130 | Cobra Operating Company | 1 | 1 | 0 | 0 | Jul 29, 1997 | Jul 29, 1997 |
| 131 | Coffee, John B. | 1 | 1 | 0 | 0 | Jun 10, 1977 | Jun 10, 1977 |
| 132 | Consolidated Oil & Gas, Inc. | 1 | 1 | 0 | 0 | Jul 29, 1985 | Jul 29, 1985 |
| 133 | Edwards Oil & Gas & Young Const. | 1 | 1 | 0 | 0 | Jun 20, 1977 | Jun 20, 1977 |
| 134 | Elliott Oil Company, L.P. | 1 | 1 | 0 | 0 | Jun 23, 2011 | Jun 23, 2011 |
| 135 | Enron Oil & Gas Company | 1 | 1 | 0 | 0 | Jun 4, 1992 | Jun 4, 1992 |
| 136 | E R I Ltd. | 1 | 1 | 0 | 0 | Oct 26, 1978 | Oct 26, 1978 |
| 137 | Exxon Corp. - Houston | 1 | 1 | 0 | 0 | Mar 23, 1987 | Mar 23, 1987 |
| 138 | Forest Oil Corp. | 1 | 1 | 0 | 0 | Apr 25, 1978 | Apr 25, 1978 |
| 139 | Ft. Bend Oil Co. | 1 | 1 | 0 | 0 | Jul 13, 1982 | Jul 13, 1982 |
| 140 | F-W Oil Exploration L.L.C. | 1 | 1 | 0 | 0 | Jun 21, 2005 | Jun 21, 2005 |
| 141 | Gainco, Inc. | 1 | 1 | 0 | 0 | Apr 8, 1985 | Apr 8, 1985 |
| 142 | Galaxy Energies, Inc. | 1 | 1 | 0 | 0 | Jan 27, 1988 | Jan 27, 1988 |
| 143 | Gasper Rice Resources, Ltd. | 1 | 1 | 0 | 0 | Jun 30, 2003 | Jun 30, 2003 |
| 144 | Gordy Oil Company | 1 | 1 | 0 | 0 | Dec 20, 2000 | Dec 20, 2000 |
| 145 | Grels Production Company, Inc. | 1 | 1 | 0 | 0 | Jul 25, 1991 | Jul 25, 1991 |
| 146 | Grimes Energy Company | 1 | 1 | 0 | 0 | Sep 24, 1999 | Sep 24, 1999 |
| 147 | Gruy Petroleum Management Co. | 1 | 1 | 0 | 0 | Oct 13, 2004 | Oct 13, 2004 |
| 148 | Hamill, Claud B. | 1 | 1 | 0 | 0 | May 27, 1986 | May 27, 1986 |
| 149 | Hanson Minerals Co. | 1 | 1 | 0 | 0 | Feb 27, 1991 | Feb 27, 1991 |
| 150 | Houston Oil and Development Corp | 1 | 1 | 0 | 0 | Jul 31, 1990 | Jul 31, 1990 |
| 151 | Inexco Oil Company | 1 | 1 | 0 | 0 | Sep 3, 1982 | Sep 3, 1982 |
| 152 | Inland Ocean, Inc. | 1 | 1 | 0 | 0 | Oct 27, 2010 | Oct 27, 2010 |
| 153 | Ipact | 1 | 1 | 0 | 0 | May 16, 2005 | May 16, 2005 |
| 154 | Ironroc Energy | 1 | 1 | 1 | 0 | Nov 28, 2022 | Nov 28, 2022 |
| 155 | Joyce & Hilty, Inc. | 1 | 1 | 0 | 0 | Dec 23, 1980 | Dec 23, 1980 |
| 156 | Kebo Oil & Gas, Inc. | 1 | 1 | 0 | 0 | May 22, 2004 | May 22, 2004 |
| 157 | Kirby Exploration Company | 1 | 1 | 0 | 0 | Sep 26, 1980 | Sep 26, 1980 |
| 158 | Lyndel Exploration, Inc. | 1 | 1 | 0 | 0 | Nov 17, 1998 | Nov 17, 1998 |
| 159 | Magna Oil & Gas Corporation | 1 | 1 | 0 | 0 | Sep 18, 2000 | Sep 18, 2000 |
| 160 | Marr, M. H. | 1 | 1 | 0 | 0 | Feb 3, 1982 | Feb 3, 1982 |
| 161 | Marshall Expl. Inc. | 1 | 1 | 0 | 0 | Aug 24, 1982 | Aug 24, 1982 |
| 162 | Moncrief, W. A. | 1 | 1 | 0 | 0 | May 31, 1978 | May 31, 1978 |
| 163 | Mvu Brazos Corp. | 1 | 1 | 0 | 0 | Jan 13, 2020 | Jan 13, 2020 |
| 164 | Myers, Sam | 1 | 1 | 0 | 0 | Aug 10, 1984 | Aug 10, 1984 |
| 165 | Nelson & Waddell | 1 | 1 | 0 | 0 | Mar 16, 1978 | Mar 16, 1978 |
| 166 | New Ulm Gas Ltd. | 1 | 1 | 0 | 0 | May 7, 1986 | May 7, 1986 |
| 167 | Perryman Oil & Gas Inc. | 1 | 1 | 0 | 0 | Dec 10, 1982 | Dec 10, 1982 |
| 168 | Petro-Hunt, L.L.C. | 1 | 1 | 0 | 0 | Mar 14, 2002 | Mar 14, 2002 |
| 169 | Porter, Mc & MF | 1 | 1 | 0 | 0 | Jun 15, 1990 | Jun 15, 1990 |
| 170 | Questar Expl. and Prod. Co. | 1 | 1 | 0 | 0 | Nov 4, 1999 | Nov 4, 1999 |
| 171 | Samson Lone Star, LLC | 1 | 1 | 0 | 0 | Aug 18, 2007 | Aug 18, 2007 |
| 172 | Sanchez Oil & Gas Corporation | 1 | 1 | 0 | 0 | Jun 4, 2008 | Jun 4, 2008 |
| 173 | Selko Oil Co. | 1 | 1 | 0 | 0 | Nov 5, 1986 | Nov 5, 1986 |
| 174 | Seminole Pipeline Company | 1 | 1 | 0 | 0 | Jun 26, 1981 | Jun 26, 1981 |
| 175 | Smith, L C Production | 1 | 1 | 0 | 0 | Nov 4, 2005 | Nov 4, 2005 |
| 176 | Stone & Webster Oil Company, Inc | 1 | 1 | 0 | 0 | May 18, 1988 | May 18, 1988 |
| 177 | Texas-Australia Power Inc. | 1 | 1 | 0 | 0 | Nov 24, 2003 | Nov 24, 2003 |
| 178 | Texas Ranger Oil Company, The | 1 | 1 | 0 | 0 | May 23, 1985 | May 23, 1985 |
| 179 | Tex-O Petroleum Company | 1 | 1 | 0 | 0 | Jul 12, 1977 | Jul 12, 1977 |
| 180 | Triangle Three Resources L.L.C. | 1 | 1 | 0 | 0 | May 24, 2010 | May 24, 2010 |
| 181 | Union Gas Operating Company | 1 | 1 | 0 | 0 | Apr 9, 2010 | Apr 9, 2010 |
| 182 | Union Oil Company of California | 1 | 1 | 0 | 0 | Jun 24, 1980 | Jun 24, 1980 |
| 183 | Vista Resources, Inc. (A) | 1 | 1 | 0 | 0 | Mar 18, 1998 | Mar 18, 1998 |
| 184 | Weekley Energy Group, LLC | 1 | 1 | 0 | 0 | May 14, 2007 | May 14, 2007 |
| 185 | Zinn Petroleum Co. | 1 | 1 | 0 | 0 | Oct 3, 1989 | Oct 3, 1989 |
| 186 | Zinn Petroleum Co. | — | 0 | 0 | 154 | — | — |
| 187 | Dome Operating LLC | — | 0 | 0 | 17 | — | — |
| 188 | Magnolia Oil & Gas Operating LLC | — | 0 | 0 | 13 | — | — |
| 189 | Falcon Seaboard Drlg. Co. | — | 0 | 0 | 12 | — | — |
| 190 | Orx Resources L.L.C. | — | 0 | 0 | 12 | — | — |
| 191 | Pomykal Joe | — | 0 | 0 | 7 | — | — |
| 192 | Redbud E & P Inc. | — | 0 | 0 | 7 | — | — |
| 193 | A.R.D. | — | 0 | 0 | 5 | — | — |
| 194 | Buie-Turnbow Operators | — | 0 | 0 | 5 | — | — |
| 195 | GS & B Oil & Gas Co. | — | 0 | 0 | 5 | — | — |
| 196 | Humble Oil & Refining Co. | — | 0 | 0 | 5 | — | — |
| 197 | Scurlock Oil Company | — | 0 | 0 | 4 | — | — |
| 198 | Hahn Theo | — | 0 | 0 | 3 | — | — |
| 199 | Mobil Producing TX. & N.M. Inc. | — | 0 | 0 | 3 | — | — |
| 200 | Pomykal Frank G. | — | 0 | 0 | 3 | — | — |
| 201 | American Trading & Prod. Corp. | — | 0 | 0 | 2 | — | — |
| 202 | Fort Apache Energy Inc. | — | 0 | 0 | 2 | — | — |
| 203 | French L. D. | — | 0 | 0 | 2 | — | — |
| 204 | AC Exploration LLC | — | 0 | 0 | 1 | — | — |
| 205 | A & R Resources | — | 0 | 0 | 1 | — | — |
| 206 | Atlantic Richfield Co. | — | 0 | 0 | 1 | — | — |
| 207 | Blezinger Brothers Disposal Serv | — | 0 | 0 | 1 | — | — |
| 208 | Coastal Oil & Land Corp. | — | 0 | 0 | 1 | — | — |
| 209 | Comet Production | — | 0 | 0 | 1 | — | — |
| 210 | Crimson Exploration Oper. Inc. | — | 0 | 0 | 1 | — | — |
| 211 | Daylight Petroleum LLC | — | 0 | 0 | 1 | — | — |
| 212 | Enterprise Products Operatingllc | — | 0 | 0 | 1 | — | — |
| 213 | Express Oil Co. | — | 0 | 0 | 1 | — | — |
| 214 | Farrell James E. (Ed) | — | 0 | 0 | 1 | — | — |
| 215 | Faulconer Vernon E. Inc. | — | 0 | 0 | 1 | — | — |
| 216 | Geo Exploration Inc. | — | 0 | 0 | 1 | — | — |
| 217 | Hamman Oil & Refining Company | — | 0 | 0 | 1 | — | — |
| 218 | HMX Investments Inc. | — | 0 | 0 | 1 | — | — |
| 219 | Home Petroleum Corp. | — | 0 | 0 | 1 | — | — |
| 220 | International Nuclear Corp. | — | 0 | 0 | 1 | — | — |
| 221 | Kilroy Company of Texas Inc. | — | 0 | 0 | 1 | — | — |
| 222 | Layline Petroleum I LLC | — | 0 | 0 | 1 | — | — |
| 223 | LTS Oil & Gas A | — | 0 | 0 | 1 | — | — |
| 224 | Mastodon Operating Company LLC | — | 0 | 0 | 1 | — | — |
| 225 | McCord Exploration Co. | — | 0 | 0 | 1 | — | — |
| 226 | Mosbacher Robert | — | 0 | 0 | 1 | — | — |
| 227 | Pelican Bay Exploration Inc. | — | 0 | 0 | 1 | — | — |
| 228 | Penn & Davis | — | 0 | 0 | 1 | — | — |
| 229 | Penn Virginia Oil & Gas Corp. | — | 0 | 0 | 1 | — | — |
| 230 | Poynor Corporation | — | 0 | 0 | 1 | — | — |
| 231 | Ranger Holdings Company | — | 0 | 0 | 1 | — | — |
| 232 | Senora Resources Inc. | — | 0 | 0 | 1 | — | — |
| 233 | Swift Energy Company | — | 0 | 0 | 1 | — | — |
| 234 | Tahiti Ptrs Enrgy Solutions Corp | — | 0 | 0 | 1 | — | — |
| 235 | TC Oil and Gas LLC | — | 0 | 0 | 1 | — | — |
| 236 | Tex-Atic Resources Inc. | — | 0 | 0 | 1 | — | — |
| 237 | Zone Ridge Operating LLC | — | 0 | 0 | 1 | — | — |
237 OPERATORS · WINDOW ON THE RRC ISSUE DATE