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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Castle Resources, Inc. | Kansas | 2,125 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Castor Production, L.L.C. | Louisiana | 1,132 BBLs | 0 MCF | Apr 2013 - Dec 2024 |
| Cat Creek Holdings LLC | Montana | 1,277 BBLs | 0 MCF | Aug 2020 - Mar 2026 |
| Catamount Energy Partners LLC | Colorado | 0 BBLs | 885,994 MCF | Jan 1999 - Mar 2026 |
| Catamount Energy Partners LLC | New Mexico | 0 BBLs | 81,241 MCF | Aug 2014 - Apr 2026 |
| Cci Robinson'S Bend LLC | Alabama | 0 BBLs | 138,731 MCF | Jan 1990 - Mar 2026 |
| Century Oil And Gas LLC | Wyoming | 2,932 BBLs | 11,786 MCF | Dec 2018 - Mar 2026 |
| Chaco Energy Company | Colorado | 1,444 BBLs | 4,125 MCF | Jan 1999 - Feb 2026 |
| Chaco Energy Company | Kansas | 1,004 BBLs | 314 MCF | Jan 1980 - Jan 2026 |
| Chadco, Inc. | Louisiana | 1,834 BBLs | 0 MCF | Dec 1989 - Dec 2024 |
| Challenger Point Energy, LLC | North Dakota | 2,519 BBLs | 0 MCF | Jan 2018 - Mar 2026 |
| Charter Energy, Inc. | Kansas | 5,853 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Cherokee Wells LLC | Kansas | 314 BBLs | 49,931 MCF | Sep 1980 - Jan 2026 |
| Chesapeake Operating, L.L.C. | Louisiana | 0 BBLs | 49,721,168 MCF | Jun 2014 - Dec 2024 |
| Chevron Midcontinent, L.P. | New Mexico | 1,436 BBLs | 8,773 MCF | Apr 2006 - Mar 2026 |
| Chevron U S A Inc | New Mexico | 3,131,208 BBLs | 16,790,040 MCF | Jan 1993 - Mar 2026 |
| Chevron U.S.A. Inc. | Alabama | 0 BBLs | 45,875 MCF | Oct 1962 - Mar 2026 |
| Chevron USA Inc | Colorado | 735 BBLs | 230,579 MCF | Jan 1999 - Feb 2026 |
| Chi Operating Inc | New Mexico | 11,766 BBLs | 27,396 MCF | Jan 1993 - Mar 2026 |
| Chieftain Oil Co., Inc. | Kansas | 2,551 BBLs | 79,688 MCF | Jan 1980 - Jan 2026 |
| Chipcore LLC | Wyoming | 4,471 BBLs | 215 MCF | Sep 2012 - Mar 2026 |
| Chisos, LTD | New Mexico | 1,030 BBLs | 4,299 MCF | Aug 2002 - Mar 2026 |
| Chizum Oil, LLC | Kansas | 2,462 BBLs | 0 MCF | May 2018 - Jan 2026 |
| Cholla Production, LLC | Kansas | 1,310 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Chris Batchman Inc. | Kansas | 1,355 BBLs | 0 MCF | Jan 2010 - Jan 2026 |
| Christian Oil Co Inc | Michigan | 2,066 BBLs | 0 MCF | Jul 1985 - Mar 2026 |
| Cimic Energy, LLC | Louisiana | 1,933 BBLs | 0 MCF | Jan 2011 - Jan 2025 |
| Citation Oil & Gas Corp | Colorado | 13,188 BBLs | 111,083 MCF | Jan 1999 - Mar 2026 |
| Citation Oil & Gas Corp | New Mexico | 554 BBLs | 23,608 MCF | Jan 1993 - Mar 2026 |
| Citation Oil & Gas Corp | Utah | 16,764 BBLs | 9,112 MCF | Jan 1973 - Apr 2026 |
| Citation Oil & Gas Corp. | Kansas | 1,498 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Citation Oil & Gas Corp. | Montana | 16,600 BBLs | 915 MCF | Jan 1991 - Mar 2026 |
| Citation Oil & Gas Corp. | North Dakota | 14,940 BBLs | 6,553 MCF | Oct 1996 - Mar 2026 |
| Citation Oil & Gas Corporation | Wyoming | 89,617 BBLs | 13,785 MCF | Jan 1981 - Mar 2026 |
| Civitas North LLC | Colorado | 21,259 BBLs | 74,639 MCF | Oct 2010 - Feb 2026 |
| CML Exploration, LLC | New Mexico | 4,578 BBLs | 7,912 MCF | Nov 2007 - Mar 2026 |
| CMX, Inc. | Kansas | 798 BBLs | 9,449 MCF | Jan 1980 - Jan 2026 |
| Cobalt Energy LLC | Kansas | 4,516 BBLs | 0 MCF | Mar 2012 - Jan 2026 |
| Cobra Oil & Gas Corporation | North Dakota | 84,462 BBLs | 39,540 MCF | Dec 2015 - Mar 2026 |
| Cobra Oil & Gas Corporation | Utah | 7 BBLs | 105,848 MCF | Aug 2015 - Apr 2026 |
| Cobra Oil & Gas Corporation | Wyoming | 388 BBLs | 36,963 MCF | Jan 1978 - Mar 2026 |
| Cobra Oil And Gas Corporation | Michigan | 0 BBLs | 107,796 MCF | Jun 2015 - Apr 2026 |
| COG Operating LLC | New Mexico | 3,178,511 BBLs | 13,556,664 MCF | Dec 2004 - Mar 2026 |
| COG Production, LLC | New Mexico | 368,710 BBLs | 1,943,450 MCF | Jul 2004 - Mar 2026 |
| Colt Energy Inc | Kansas | 16,875 BBLs | 44,853 MCF | Jan 1980 - Jan 2026 |
| 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 | 3,652,782 BBLs | 10,204,933 MCF | Dec 1963 - Feb 2026 |
| Conocophillips Company | New Mexico | 1,167,947 BBLs | 4,324,852 MCF | Jan 2003 - Mar 2026 |
| Contango Resources LLC | Wyoming | 385,694 BBLs | 10,412,715 MCF | Feb 2020 - Mar 2026 |