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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Chesapeake Operating, L.L.C. | Louisiana | 0 BBLs | 36,558,764 MCF | Jul 2014 - Sep 2018 |
| Chevron Midcontinent, L.P. | New Mexico | 9,593 BBLs | 73,065 MCF | Apr 2006 - Aug 2020 |
| Chevron U S A Inc | New Mexico | 1,565,694 BBLs | 9,143,187 MCF | Jan 1993 - Aug 2020 |
| Chevron U.S.A. Inc. | Alabama | 0 BBLs | 70,658 MCF | Oct 1962 - Jul 2020 |
| Chevron U.S.A. Inc. | Louisiana | 77,643 BBLs | 45,896 MCF | Jan 1977 - Aug 2018 |
| Chevron USA Inc | Colorado | 259,132 BBLs | 5,749,620 MCF | Jan 1999 - Aug 2020 |
| Chieftain Oil Co., Inc. | Kansas | 0 BBLs | 115,151 MCF | Jan 1980 - Jun 2020 |
| Chipcore LLC | Wyoming | 2,350 BBLs | 33,444 MCF | Jan 1978 - Dec 2020 |
| Chisholm Energy Operating, LLC | New Mexico | 313,400 BBLs | 1,072,752 MCF | Jul 2017 - Aug 2020 |
| Cholla Production, LLC | Kansas | 4,898 BBLs | 0 MCF | Jan 1980 - Jun 2020 |
| Cimarex Energy Co. | New Mexico | 749,938 BBLs | 4,847,731 MCF | Oct 2002 - Aug 2020 |
| Cimarex Energy Co. Of Colorado | New Mexico | 165,827 BBLs | 1,268,166 MCF | May 1997 - Aug 2020 |
| Cimic Energy, LLC | Louisiana | 2,569 BBLs | 0 MCF | Jan 2011 - Sep 2018 |
| Citation Oil & Gas Corp | Colorado | 28,371 BBLs | 339,804 MCF | Dec 2004 - Aug 2020 |
| Citation Oil & Gas Corp | Utah | 30,952 BBLs | 37,699 MCF | Jan 1973 - Aug 2020 |
| Citation Oil & Gas Corp. | Kansas | 23,107 BBLs | 85 MCF | Jan 1980 - Jun 2020 |
| Citation Oil & Gas Corp. | Montana | 13,895 BBLs | 4,287 MCF | Jan 1991 - Aug 2020 |
| Citation Oil & Gas Corp. | North Dakota | 15,325 BBLs | 5,633 MCF | Oct 1996 - Aug 2020 |
| Citation Oil & Gas Corporation | Wyoming | 54,316 BBLs | 28,476 MCF | Jan 1978 - Dec 2020 |
| CML Exploration, LLC | New Mexico | 7,825 BBLs | 21,174 MCF | Nov 2007 - Aug 2020 |
| CMX, Inc. | Kansas | 1,263 BBLs | 37,355 MCF | Jan 1980 - Jun 2020 |
| Coastal Plains Energy Inc | Utah | 0 BBLs | 42,418 MCF | Jun 2002 - Aug 2020 |
| Cobalt Energy LLC | Kansas | 3,689 BBLs | 0 MCF | Mar 2012 - Jun 2020 |
| Cobra Oil & Gas Corp | Utah | 146 BBLs | 151,824 MCF | Aug 2015 - Aug 2020 |
| Cobra Oil & Gas Corporation | North Dakota | 86,184 BBLs | 43,085 MCF | Dec 2015 - Aug 2020 |
| Cobra Oil & Gas Corporation | Wyoming | 315 BBLs | 33,855 MCF | Jan 1983 - Dec 2020 |
| Cobra Oil And Gas Corporation | Michigan | 455 BBLs | 155,856 MCF | Jan 1986 - Apr 2020 |
| COG Operating LLC | New Mexico | 3,195,884 BBLs | 11,477,095 MCF | Dec 2004 - Aug 2020 |
| COG Production, LLC | New Mexico | 305,420 BBLs | 3,096,431 MCF | Jul 2004 - Aug 2020 |
| Coleman Oil & Gas Inc | Colorado | 0 BBLs | 202,436 MCF | Jan 1999 - Aug 2020 |
| Colgate Operating, LLC | New Mexico | 5,228 BBLs | 46,116 MCF | Nov 2016 - Jul 2020 |
| Colt Energy Inc | Kansas | 6,993 BBLs | 63,126 MCF | Jan 1980 - Jun 2020 |
| Compass Energy Operating, LLC | Louisiana | 69 BBLs | 981,286 MCF | Jul 2014 - Aug 2018 |
| Comstock Oil & Gas--La, LLC | Louisiana | 845 BBLs | 6,035,485 MCF | Apr 2005 - Sep 2018 |
| Conoco Phillips Company | Colorado | 30,645 BBLs | 64,382 MCF | Jan 1999 - Aug 2020 |
| Conocophillips Alaska, Inc. | Alaska | 4,543,281 BBLs | 6,069,484 MCF | Dec 1963 - Aug 2020 |
| Conocophillips Company | New Mexico | 213,494 BBLs | 1,038,378 MCF | Jan 2003 - Aug 2020 |
| Conocophillips Company | Utah | 0 BBLs | 1,360,740 MCF | Jan 2003 - Aug 2020 |
| Contango Operators, Inc. | Louisiana | 5,406 BBLs | 684,585 MCF | Dec 2007 - Sep 2018 |
| Contango Resources Inc | Wyoming | 2,751 BBLs | 1,717 MCF | Jan 2019 - Dec 2020 |
| Continental Operating Co. | Louisiana | 1,184 BBLs | 12,161 MCF | Jan 1996 - Sep 2018 |
| Continental Resources Inc | Montana | 261,106 BBLs | 436,649 MCF | Jan 1991 - Aug 2020 |
| Continental Resources Inc. | Louisiana | 2,223 BBLs | 1,085 MCF | Sep 1995 - Sep 2018 |
| Continental Resources, Inc. | New Mexico | 1,302 BBLs | 8,551 MCF | Oct 2018 - Aug 2020 |
| Continental Resources, Inc. | North Dakota | 3,123,277 BBLs | 7,113,152 MCF | Sep 1978 - Aug 2020 |
| Cook Inlet Energy, LLC. | Alaska | 0 BBLs | 105,486 MCF | Dec 2009 - Aug 2020 |
| Coral Production Corporation | Wyoming | 2,251 BBLs | 320 MCF | Jan 1978 - Dec 2020 |
| Core Energy LLC | Michigan | 18,256 BBLs | 37,982 MCF | Jan 1982 - May 2020 |
| Cornerstone Natural Resources LLC | North Dakota | 6,599 BBLs | 6,353 MCF | Jan 2007 - Aug 2020 |
| Covey Park Gas LLC | Louisiana | 0 BBLs | 13,133,721 MCF | May 2016 - Sep 2018 |