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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Cox Operating, L.L.C. | Louisiana | 13,096 BBLs | 22,164 MCF | Jun 2004 - Mar 2023 |
| Crawford Production Company | Kansas | 1,977 BBLs | 629 MCF | Jan 1980 - Feb 2023 |
| Creole Operating, LLC | Louisiana | 4,750 BBLs | 7,123 MCF | May 2020 - Mar 2023 |
| Crescent Pass Energy, LLC | Louisiana | 208 BBLs | 118,015 MCF | Aug 2018 - Apr 2023 |
| Crescent Point Energy U.S. Corp. | North Dakota | 506,017 BBLs | 834,343 MCF | Dec 2010 - May 2023 |
| Crosbys Creek Oil & Gas, LLC | Alabama | 8,616 BBLs | 32,536 MCF | Apr 1982 - Mar 2023 |
| Cross Bar Energy, LLC | Kansas | 2,936 BBLs | 0 MCF | Jan 1980 - Feb 2023 |
| Cross Timbers Energy, LLC | New Mexico | 32,050 BBLs | 392,682 MCF | Jul 2013 - Apr 2023 |
| Crowheart Energy LLC | Wyoming | 118,953 BBLs | 3,382,130 MCF | Feb 2018 - Apr 2023 |
| Crown Energy Company | Kansas | 3,169 BBLs | 0 MCF | Jan 1980 - Feb 2023 |
| Curt'S Oil Operation, LLC | Kansas | 4,368 BBLs | 1,799 MCF | Jan 2010 - Feb 2023 |
| CWT Operating, LLC | Montana | 3,928 BBLs | 123 MCF | Dec 2021 - Apr 2023 |
| CX Operating, Inc. | Louisiana | 6,021 BBLs | 1,962 MCF | Dec 2014 - Apr 2023 |
| D & Z Exploration, Inc. | Kansas | 1,648 BBLs | 0 MCF | Jul 1985 - Feb 2023 |
| D90 Energy LLC | Wyoming | 3,972 BBLs | 23,024 MCF | Jan 2020 - Apr 2023 |
| D90 Energy, LLC | Montana | 8,039 BBLs | 974 MCF | Jan 2020 - Apr 2023 |
| D90 Energy, LLC | North Dakota | 3,483 BBLs | 0 MCF | Aug 2020 - May 2023 |
| Dale E. Jackson Production Co. | Kansas | 2,168 BBLs | 0 MCF | Jan 1980 - Feb 2023 |
| Damar Resources, Inc. | Kansas | 9,142 BBLs | 0 MCF | Jan 1980 - Feb 2023 |
| Darrah Oil Company, LLC | Kansas | 19,090 BBLs | 8,936 MCF | Jan 2010 - Feb 2023 |
| Daube Company The | Wyoming | 4,900 BBLs | 0 MCF | Jan 1990 - May 2023 |
| Daylight Petroleum LLC | Louisiana | 11,781 BBLs | 45,003 MCF | Feb 2019 - Apr 2023 |
| Daylight Petroleum, LLC | Kansas | 4,126 BBLs | 0 MCF | Jan 2010 - Feb 2023 |
| Daystar Petroleum, Inc. | Kansas | 9,379 BBLs | 12,590 MCF | Jan 1980 - Feb 2023 |
| Decker Operating Co., L.L.C. | Louisiana | 896 BBLs | 27,746 MCF | Dec 2021 - Mar 2023 |
| Delta Oil Co Inc | Michigan | 51 BBLs | 141,734 MCF | Jan 1982 - Dec 2022 |
| Delta Royalties LLC | Louisiana | 2,565 BBLs | 7,405 MCF | Dec 2019 - Mar 2023 |
| Denbury Onshore LLC | Wyoming | 206,723 BBLs | 200,437 MCF | Jan 2011 - May 2023 |
| Denbury Onshore, LLC | Alabama | 17,881 BBLs | 0 MCF | Jan 1956 - Mar 2023 |
| Denbury Onshore, LLC | Louisiana | 102,346 BBLs | 95,162 MCF | Jan 2004 - Mar 2023 |
| Denbury Onshore, LLC | Mississippi | 35,878 BBLs | 0 MCF | Jun 1971 - Apr 2023 |
| Denbury Onshore, LLC | Montana | 374,952 BBLs | 5,538,432 MCF | Jan 2011 - Apr 2023 |
| Denbury Onshore, LLC | North Dakota | 112,577 BBLs | 31,757 MCF | Oct 2007 - May 2023 |
| Deutsch Oil Company | Kansas | 2,546 BBLs | 965 MCF | Jan 1980 - Feb 2023 |
| Devon Energy Production Company LP | Wyoming | 627,356 BBLs | 984,836 MCF | Jan 1978 - May 2023 |
| Devon Energy Production Company, LP | New Mexico | 4,771,394 BBLs | 21,034,545 MCF | Jan 1993 - Apr 2023 |
| Dews Production LLC | Arkansas | 2,577 BBLs | 0 MCF | Mar 2017 - Jul 2022 |
| DGH Oil, LLC | Kansas | 5,206 BBLs | 0 MCF | Jan 1980 - Feb 2023 |
| Diehl Oil Inc | Kansas | 1,855 BBLs | 0 MCF | Jan 1980 - Feb 2023 |
| Digital Operating Company LLC | Montana | 1,727 BBLs | 118 MCF | Jun 2021 - Apr 2023 |
| Diversified Production LLC | Louisiana | 13,537 BBLs | 4,772,850 MCF | May 2021 - Mar 2023 |
| Dixon Operating Company, LLC | Kansas | 16,423 BBLs | 57,594 MCF | Jan 2010 - Feb 2023 |
| DJR Operating, LLC | New Mexico | 429,596 BBLs | 1,420,267 MCF | Nov 2017 - May 2023 |
| DK Operating Inc. | Kansas | 2,049 BBLs | 0 MCF | Jan 1980 - Feb 2023 |
| Dome De Sel LLC | Louisiana | 2,870 BBLs | 11,578 MCF | Oct 2018 - Mar 2023 |
| Downing-Nelson Oil Co Inc | Kansas | 19,792 BBLs | 234 MCF | Jan 1980 - Feb 2023 |
| Dugan Production Corp | New Mexico | 6,845 BBLs | 669,151 MCF | Jan 1993 - Apr 2023 |
| Dunn Exploration Company, LLC | Louisiana | 81,488 BBLs | 36,345 MCF | Apr 2010 - Mar 2023 |
| Durango Operating LLC | Mississippi | 1,729 BBLs | 288 MCF | Dec 1976 - Apr 2023 |
| Durango Operating, LLC | Alabama | 2,106 BBLs | 28 MCF | May 1952 - Mar 2023 |