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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Charter Energy, Inc. | Kansas | 6,366 BBLs | 0 MCF | Jan 1980 - Dec 2019 |
| Chemily Management Company | Wyoming | 2,529 BBLs | 8,782 MCF | Sep 1995 - Jul 2021 |
| Cherokee Wells LLC | Kansas | 0 BBLs | 66,974 MCF | Sep 1980 - Dec 2019 |
| Chesapeake Operating LLC | Wyoming | 469,351 BBLs | 3,018,144 MCF | Dec 1991 - Jul 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 | 9,593 BBLs | 69,000 MCF | Apr 2006 - Jun 2021 |
| Chevron U S A Inc | New Mexico | 987,533 BBLs | 6,917,898 MCF | Jan 1993 - Jun 2021 |
| Chevron U.S.A. Inc. | Alabama | 0 BBLs | 67,941 MCF | Oct 1962 - Jun 2021 |
| Chevron U.S.A. Inc. | Louisiana | 77,643 BBLs | 45,896 MCF | Jan 1977 - Aug 2018 |
| Chevron USA Inc | Colorado | 252,425 BBLs | 6,087,948 MCF | Jan 1999 - Jun 2021 |
| Chieftain Oil Co., Inc. | Kansas | 4,390 BBLs | 127,672 MCF | Jan 1980 - Dec 2019 |
| Chipcore LLC | Wyoming | 3,320 BBLs | 1,594 MCF | Sep 2012 - Jul 2021 |
| Chisholm Energy Operating, LLC | New Mexico | 171,802 BBLs | 742,576 MCF | Jul 2017 - Jun 2021 |
| Cholla Production, LLC | Kansas | 5,283 BBLs | 0 MCF | Jan 1980 - Dec 2019 |
| Cimarex Energy Co. | New Mexico | 693,529 BBLs | 4,266,477 MCF | Oct 2002 - Jun 2021 |
| Cimarex Energy Co. Of Colorado | New Mexico | 263,572 BBLs | 1,339,537 MCF | May 1997 - Jun 2021 |
| Cimic Energy, LLC | Louisiana | 2,569 BBLs | 0 MCF | Jan 2011 - Sep 2018 |
| Citation Oil & Gas Corp | Colorado | 26,362 BBLs | 210,681 MCF | Dec 2004 - Jun 2021 |
| Citation Oil & Gas Corp | Utah | 32,296 BBLs | 29,783 MCF | Jan 1973 - Jul 2021 |
| Citation Oil & Gas Corp. | Kansas | 35,026 BBLs | 639 MCF | Jan 1980 - Dec 2019 |
| Citation Oil & Gas Corp. | Montana | 12,590 BBLs | 1,949 MCF | Jan 1991 - Jun 2021 |
| Citation Oil & Gas Corp. | North Dakota | 19,553 BBLs | 8,805 MCF | Oct 1996 - Jul 2021 |
| Citation Oil & Gas Corporation | Wyoming | 53,486 BBLs | 33,483 MCF | Jan 1981 - Jul 2021 |
| Cline Production Company | Montana | 2,309 BBLs | 0 MCF | Jan 1991 - May 2021 |
| CML Exploration, LLC | New Mexico | 7,342 BBLs | 13,701 MCF | Nov 2007 - Jul 2021 |
| CMX, Inc. | Kansas | 5,456 BBLs | 40,859 MCF | Jan 1980 - Dec 2019 |
| Coastal Plains Energy Inc | Utah | 0 BBLs | 56,997 MCF | Jun 2002 - Jul 2021 |
| Cobalt Energy LLC | Kansas | 5,991 BBLs | 0 MCF | Mar 2012 - Dec 2019 |
| Cobra Oil & Gas Corp | Utah | 375 BBLs | 136,538 MCF | Aug 2015 - Jul 2021 |
| Cobra Oil & Gas Corporation | North Dakota | 95,527 BBLs | 55,887 MCF | Dec 2015 - Jul 2021 |
| Cobra Oil & Gas Corporation | Wyoming | 890 BBLs | 50,323 MCF | Jan 1978 - Jul 2021 |
| Cobra Oil And Gas Corporation | Michigan | 0 BBLs | 132,313 MCF | Jun 2015 - Apr 2021 |
| COG Operating LLC | New Mexico | 3,032,269 BBLs | 11,788,809 MCF | Dec 2004 - Jun 2021 |
| COG Production, LLC | New Mexico | 257,682 BBLs | 2,570,510 MCF | Jul 2004 - Jun 2021 |
| Coleman Oil & Gas Inc | Colorado | 0 BBLs | 314,583 MCF | Jan 1999 - Jun 2021 |
| Colgate Operating, LLC | New Mexico | 4,269 BBLs | 42,955 MCF | Nov 2016 - May 2021 |
| Colt Energy Inc | Kansas | 12,962 BBLs | 64,813 MCF | Jan 1980 - Dec 2019 |
| 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 | 4,116,994 BBLs | 5,794,450 MCF | Dec 1963 - Jul 2021 |
| Conocophillips Company | New Mexico | 571,778 BBLs | 2,299,771 MCF | Jan 2003 - Jun 2021 |
| Conocophillips Company | Utah | 0 BBLs | 1,336,468 MCF | Jan 2003 - Jul 2021 |
| Contango Operators, Inc. | Louisiana | 5,406 BBLs | 684,585 MCF | Dec 2007 - Sep 2018 |
| Contango Resources Inc | Wyoming | 91,254 BBLs | 555,596 MCF | Feb 2020 - Jul 2021 |
| Contango Resources, Inc. | Montana | 24,732 BBLs | 77,510 MCF | Dec 2020 - Jun 2021 |
| Continental Resources Inc | Montana | 179,748 BBLs | 378,921 MCF | Jan 1991 - Jun 2021 |
| Continental Resources Inc | Wyoming | 188,061 BBLs | 387,629 MCF | Jan 1993 - Jul 2021 |
| Continental Resources, Inc. | North Dakota | 5,039,788 BBLs | 14,959,055 MCF | Sep 1978 - Jul 2021 |
| Cook Inlet Energy, LLC. | Alaska | 32,507 BBLs | 127,248 MCF | Dec 2009 - Jul 2021 |