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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Chaco Energy Company | Wyoming | 2,450 BBLs | 29,309 MCF | Apr 1999 - Jan 2021 |
| Challenger Point Energy, LLC | North Dakota | 5,113 BBLs | 25,734 MCF | Jan 2018 - Feb 2021 |
| Charter Energy, Inc. | Kansas | 4,410 BBLs | 0 MCF | Jan 1980 - Dec 2020 |
| Chemily Management Company | Wyoming | 3,186 BBLs | 8,624 MCF | Sep 1995 - Feb 2021 |
| Cherokee Wells LLC | Kansas | 0 BBLs | 56,213 MCF | Sep 1980 - Dec 2020 |
| Chesapeake Operating LLC | Wyoming | 482,522 BBLs | 3,287,599 MCF | Dec 1991 - Feb 2021 |
| Chesapeake Operating, Inc. | Louisiana | 3,421 BBLs | 2,501 MCF | Jun 1996 - Aug 2018 |
| Chesapeake Operating, L.L.C. | Louisiana | 0 BBLs | 36,558,764 MCF | Jul 2014 - Sep 2018 |
| Chevron Midcontinent, L.P. | New Mexico | 10,784 BBLs | 54,335 MCF | Apr 2006 - Feb 2021 |
| Chevron U S A Inc | New Mexico | 1,021,869 BBLs | 6,998,869 MCF | Jan 1993 - Feb 2021 |
| Chevron U.S.A. Inc. | Alabama | 0 BBLs | 70,302 MCF | Oct 1962 - Dec 2020 |
| Chevron U.S.A. Inc. | Louisiana | 77,643 BBLs | 45,896 MCF | Jan 1977 - Aug 2018 |
| Chevron USA Inc | Colorado | 248,676 BBLs | 5,841,212 MCF | Jan 1999 - Feb 2021 |
| Chieftain Oil Co., Inc. | Kansas | 3,225 BBLs | 105,808 MCF | Jan 1980 - Dec 2020 |
| Chipcore LLC | Wyoming | 3,034 BBLs | 1,914 MCF | Sep 2012 - Feb 2021 |
| Chisholm Energy Operating, LLC | New Mexico | 187,369 BBLs | 781,104 MCF | Jul 2017 - Feb 2021 |
| Cholla Production, LLC | Kansas | 5,555 BBLs | 0 MCF | Jan 1980 - Dec 2020 |
| Cimarex Energy Co. | New Mexico | 590,130 BBLs | 3,851,532 MCF | Oct 2002 - Feb 2021 |
| Cimarex Energy Co. Of Colorado | New Mexico | 155,013 BBLs | 1,033,056 MCF | May 1997 - Feb 2021 |
| Cimic Energy, LLC | Louisiana | 2,569 BBLs | 0 MCF | Jan 2011 - Sep 2018 |
| Citation Oil & Gas Corp | Colorado | 27,926 BBLs | 266,525 MCF | Dec 2004 - Feb 2021 |
| Citation Oil & Gas Corp | Utah | 32,385 BBLs | 28,973 MCF | Jan 1973 - Feb 2021 |
| Citation Oil & Gas Corp. | Kansas | 27,830 BBLs | 0 MCF | Jan 1980 - Dec 2020 |
| Citation Oil & Gas Corp. | North Dakota | 16,159 BBLs | 7,242 MCF | Oct 1996 - Feb 2021 |
| Citation Oil & Gas Corporation | Wyoming | 51,631 BBLs | 34,614 MCF | Jan 1981 - Feb 2021 |
| Cline Production Company | Montana | 2,120 BBLs | 0 MCF | Jan 1991 - Dec 2020 |
| CML Exploration, LLC | New Mexico | 8,619 BBLs | 17,489 MCF | Nov 2007 - Feb 2021 |
| CMX, Inc. | Kansas | 3,064 BBLs | 36,045 MCF | Jan 1980 - Dec 2020 |
| Cobalt Energy LLC | Kansas | 4,360 BBLs | 0 MCF | Mar 2012 - Dec 2020 |
| Cobra Oil & Gas Corp | Utah | 343 BBLs | 104,412 MCF | Aug 2015 - Feb 2021 |
| Cobra Oil & Gas Corporation | North Dakota | 87,465 BBLs | 40,231 MCF | Dec 2015 - Feb 2021 |
| Cobra Oil & Gas Corporation | Wyoming | 183 BBLs | 48,669 MCF | Jan 1978 - Feb 2021 |
| Cobra Oil And Gas Corporation | Michigan | 0 BBLs | 132,313 MCF | Jan 1986 - Dec 2020 |
| COG Operating LLC | New Mexico | 2,997,733 BBLs | 11,557,586 MCF | Dec 2004 - Feb 2021 |
| COG Production, LLC | New Mexico | 369,195 BBLs | 2,922,208 MCF | Jul 2004 - Feb 2021 |
| Coleman Oil & Gas Inc | Colorado | 0 BBLs | 244,484 MCF | Jan 1999 - Jan 2021 |
| Colt Energy Inc | Kansas | 12,641 BBLs | 52,130 MCF | Jan 1980 - Dec 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 |
| Conocophillips Alaska, Inc. | Alaska | 4,459,757 BBLs | 6,609,212 MCF | Dec 1963 - Feb 2021 |
| Conocophillips Company | New Mexico | 512,677 BBLs | 1,811,208 MCF | Jan 2003 - Feb 2021 |
| Conocophillips Company | Utah | 0 BBLs | 1,337,850 MCF | Jan 2003 - Feb 2021 |
| Contango Operators, Inc. | Louisiana | 5,406 BBLs | 684,585 MCF | Dec 2007 - Sep 2018 |
| Contango Resources Inc | Wyoming | 23,890 BBLs | 27,155 MCF | Feb 2020 - Feb 2021 |
| Continental Resources Inc | Montana | 196,151 BBLs | 374,532 MCF | Jan 1991 - Feb 2021 |
| Continental Resources Inc. | Louisiana | 2,223 BBLs | 1,085 MCF | Sep 1995 - Sep 2018 |
| Continental Resources, Inc. | North Dakota | 4,612,122 BBLs | 14,063,851 MCF | Sep 1978 - Feb 2021 |
| Cook Inlet Energy, LLC. | Alaska | 0 BBLs | 94,475 MCF | Dec 2009 - Feb 2021 |
| Core Energy LLC | Michigan | 20,355 BBLs | 46,985 MCF | Jan 1982 - Dec 2020 |
| Cornerstone Natural Resources LLC | North Dakota | 10,544 BBLs | 14,296 MCF | Jan 2007 - Feb 2021 |