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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Casebeer, Inc. | Kansas | 1,553 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Casillas Petroleum Corp | Kansas | 14,479 BBLs | 223,039 MCF | Jan 2010 - Apr 2025 |
| Castex Energy, Inc. | Louisiana | 36,907 BBLs | 689,110 MCF | Jun 1988 - Jan 2025 |
| Castle Resources, Inc. | Kansas | 2,729 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Cat Creek Holdings LLC | Montana | 1,215 BBLs | 0 MCF | Aug 2020 - Jun 2025 |
| Catamount Energy Partners LLC | Colorado | 0 BBLs | 1,096,269 MCF | Jun 2014 - Jul 2025 |
| Catamount Energy Partners LLC | New Mexico | 0 BBLs | 58,460 MCF | Aug 2014 - Jul 2025 |
| Cci Robinson'S Bend LLC | Alabama | 0 BBLs | 163,631 MCF | Jan 1990 - May 2025 |
| Century Oil And Gas LLC | Wyoming | 3,041 BBLs | 15,097 MCF | Dec 2018 - Jun 2025 |
| Chaco Energy Company | Colorado | 1,399 BBLs | 3,156 MCF | Jul 2003 - Jun 2025 |
| Chadco, Inc. | Louisiana | 1,834 BBLs | 0 MCF | Dec 1989 - Dec 2024 |
| Challenger Point Energy, LLC | North Dakota | 3,777 BBLs | 22,622 MCF | Jan 2018 - Jun 2025 |
| Charter Energy, Inc. | Kansas | 5,536 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Cherokee Wells LLC | Kansas | 0 BBLs | 51,618 MCF | Sep 1980 - Apr 2025 |
| Chesapeake Operating, L.L.C. | Louisiana | 0 BBLs | 49,721,168 MCF | Jun 2014 - Dec 2024 |
| Chevron Midcontinent, L.P. | New Mexico | 2,058 BBLs | 10,650 MCF | Apr 2006 - Jun 2025 |
| Chevron U S A Inc | New Mexico | 2,473,035 BBLs | 11,762,646 MCF | Jan 1993 - Jun 2025 |
| Chevron U.S.A. Inc. | Alabama | 0 BBLs | 51,868 MCF | Oct 1962 - May 2025 |
| Chevron USA Inc | Colorado | 763 BBLs | 274,364 MCF | Jan 1999 - Jun 2025 |
| Chi Operating Inc | New Mexico | 12,094 BBLs | 16,231 MCF | Jan 1993 - Jul 2025 |
| Chieftain Oil Co., Inc. | Kansas | 1,891 BBLs | 86,808 MCF | Jan 1980 - Apr 2025 |
| Chipcore LLC | Wyoming | 4,539 BBLs | 830 MCF | Sep 2012 - Jun 2025 |
| Chizum Oil, LLC | Kansas | 2,135 BBLs | 0 MCF | May 2018 - Apr 2025 |
| Cholla Production, LLC | Kansas | 1,944 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Chris Batchman Inc. | Kansas | 1,345 BBLs | 0 MCF | Jan 2010 - Apr 2025 |
| Cimarex Energy Co. Of Colorado | New Mexico | 310,040 BBLs | 1,684,760 MCF | May 1997 - Jun 2025 |
| Cimic Energy, LLC | Louisiana | 1,933 BBLs | 0 MCF | Jan 2011 - Jan 2025 |
| Citation Oil & Gas Corp | Colorado | 19,229 BBLs | 149,546 MCF | Jan 2005 - Jun 2025 |
| Citation Oil & Gas Corp | New Mexico | 364 BBLs | 24,198 MCF | Jan 1993 - Jul 2025 |
| Citation Oil & Gas Corp | Utah | 19,025 BBLs | 12,773 MCF | Jan 1973 - Jul 2025 |
| Citation Oil & Gas Corp. | Kansas | 4,089 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Citation Oil & Gas Corp. | Montana | 15,504 BBLs | 1,034 MCF | Jan 1991 - Jun 2025 |
| Citation Oil & Gas Corp. | North Dakota | 17,219 BBLs | 8,102 MCF | Oct 1996 - Jul 2025 |
| Citation Oil & Gas Corporation | Wyoming | 89,673 BBLs | 13,561 MCF | Jan 1981 - Jun 2025 |
| Civitas North LLC | Colorado | 162,935 BBLs | 730,824 MCF | Apr 2017 - Jun 2025 |
| Civitas Permian Operating, LLC | New Mexico | 784,355 BBLs | 4,467,355 MCF | Feb 2024 - Jun 2025 |
| CML Exploration, LLC | New Mexico | 4,439 BBLs | 9,041 MCF | Nov 2007 - Jul 2025 |
| CMX, Inc. | Kansas | 2,542 BBLs | 9,815 MCF | Jan 1980 - Apr 2025 |
| Cobalt Energy LLC | Kansas | 4,669 BBLs | 0 MCF | Mar 2012 - Apr 2025 |
| Cobra Oil & Gas Corp | Utah | 0 BBLs | 90,042 MCF | Aug 2015 - Jul 2025 |
| Cobra Oil & Gas Corporation | North Dakota | 87,761 BBLs | 45,978 MCF | Dec 2015 - Jul 2025 |
| Cobra Oil & Gas Corporation | Wyoming | 550 BBLs | 32,021 MCF | Jan 1978 - Jul 2025 |
| Cobra Oil And Gas Corporation | Michigan | 0 BBLs | 94,986 MCF | Jun 2015 - Jul 2025 |
| COG Operating LLC | New Mexico | 2,978,842 BBLs | 13,084,609 MCF | Dec 2004 - Jun 2025 |
| COG Production, LLC | New Mexico | 331,365 BBLs | 2,236,139 MCF | Jul 2004 - Jun 2025 |
| Colt Energy Inc | Kansas | 16,011 BBLs | 50,798 MCF | Jan 1980 - Apr 2025 |
| Compass Energy Operating, LLC | Louisiana | 138 BBLs | 869,300 MCF | Jul 2014 - Jan 2025 |
| Comstock Oil & Gas--La, LLC | Louisiana | 690 BBLs | 39,125,046 MCF | Apr 2005 - Dec 2024 |
| Conocophillips Alaska, Inc. | Alaska | 4,014,859 BBLs | 8,699,711 MCF | Dec 1963 - Jul 2025 |
| Conocophillips Company | New Mexico | 795,123 BBLs | 3,329,822 MCF | Jan 2003 - Jun 2025 |