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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Ridgeway Arizona Oil Corp. | New Mexico | 25,483 BBLs | 41,633 MCF | Feb 2007 - Aug 2026 |
| Rierson Energy, LLC | Kansas | 1,444 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Riley Permian Operating Company, LLC | New Mexico | 308,166 BBLs | 1,337,388 MCF | Jun 2018 - Aug 2026 |
| Rim Operating Inc | Wyoming | 7,651 BBLs | 228 MCF | Jan 1988 - Sep 2026 |
| Rim Operating, Inc. | Montana | 6,984 BBLs | 3,605 MCF | Jan 1991 - Aug 2026 |
| Rim Operating, Inc. | New Mexico | 1,415 BBLs | 111,428 MCF | Nov 2017 - Aug 2026 |
| Rim Operating, Inc. | North Dakota | 13,078 BBLs | 6,796 MCF | Feb 2011 - Aug 2026 |
| Ritchie Exploration, Inc. | Kansas | 35,274 BBLs | 22,999 MCF | Jan 1980 - Jun 2026 |
| River Rock Operating, LLC | Kansas | 803 BBLs | 375,775 MCF | Jan 2010 - Jun 2026 |
| Riverside Energy Michigan LLC | Michigan | 2,835 BBLs | 2,948,545 MCF | Aug 2000 - Aug 2026 |
| RJ Energy, LLC | Kansas | 22,879 BBLs | 0 MCF | Jan 2010 - Jun 2026 |
| RJM Company | Kansas | 14,094 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| RL Investment, LLC | Kansas | 1,948 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Robert L Bayless Producer, LLC | Utah | 7,863 BBLs | 13,916 MCF | Aug 1958 - Aug 2026 |
| Robertson Energy, LLC | Louisiana | 2,684 BBLs | 3,610 MCF | Apr 2016 - Dec 2024 |
| Rock River Operating Inc | Wyoming | 1,867 BBLs | 4,156 MCF | Apr 1994 - Aug 2026 |
| Rockies Resources Holdings LLC | Wyoming | 112,912 BBLs | 112,900 MCF | Sep 2019 - Aug 2026 |
| Rockport Energy Solutions LLC | North Dakota | 21,956 BBLs | 42,837 MCF | Oct 2024 - Aug 2026 |
| Ronny N. Davis | Louisiana | 1,282 BBLs | 0 MCF | Jan 1977 - Jan 2025 |
| Rosestone Operating Company, LLC | Louisiana | 2,705 BBLs | 30,393 MCF | Aug 2019 - Dec 2024 |
| Roughhouse Operating, LLC | New Mexico | 1,939 BBLs | 5,715 MCF | May 2021 - Aug 2026 |
| Rouxopco LLC | Louisiana | 3,557 BBLs | 0 MCF | Dec 2020 - Dec 2024 |
| Rover Operating, LLC | New Mexico | 6,743 BBLs | 23,134 MCF | Nov 2016 - Aug 2026 |
| Rubicon Oil & Gas, LLC | New Mexico | 1,463 BBLs | 26,240 MCF | Sep 2002 - Aug 2026 |
| Russell Oil, Inc. | Kansas | 4,204 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| S & K Oil Production, Inc. | Kansas | 4,870 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| S.H. Loe Oil Corp. | Louisiana | 2,415 BBLs | 0 MCF | Oct 1986 - Jan 2025 |
| Saga Resource Management LLC | Alabama | 0 BBLs | 352,067 MCF | Dec 1988 - Aug 2026 |
| Sage Butte PRB Operating, LLC | Wyoming | 195,647 BBLs | 575,187 MCF | Mar 2018 - Aug 2026 |
| Saguaro Petroleum, LLC | New Mexico | 6,264 BBLs | 13,906 MCF | Nov 2018 - Aug 2026 |
| Samson Exploration LLC | Wyoming | 93,314 BBLs | 177,196 MCF | Mar 2015 - Aug 2026 |
| Samson Oil And Gas USA, Inc. | Montana | 8,874 BBLs | 4,810 MCF | May 2012 - Aug 2026 |
| Samuel Gary Jr. & Associates, Inc. | Kansas | 7,764 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| San Juan Resources, Inc. | New Mexico | 554 BBLs | 28,040 MCF | Jan 1993 - Sep 2026 |
| Sandlin Oil Corporation | Kansas | 1,614 BBLs | 0 MCF | Aug 1980 - Jun 2026 |
| Sandpoint Energy Partners LLC | Louisiana | 2,252 BBLs | 0 MCF | Nov 2019 - Jan 2025 |
| Sandridge Exploration And Production LLC | Kansas | 1,641 BBLs | 200,711 MCF | Jan 1980 - Jun 2026 |
| Satchell Creek Petroleum, LLC | Kansas | 1,450 BBLs | 0 MCF | Jan 2020 - Jun 2026 |
| Savoy Energy LP | Michigan | 24,199 BBLs | 5,273 MCF | Jan 1982 - Sep 2026 |
| Savoy Energy, LLC | Utah | 0 BBLs | 136,977 MCF | Mar 2005 - Sep 2026 |
| Schankie Well Service, Inc. | Kansas | 1,528 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Scheck Oil Operation | Kansas | 8,279 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Sco Permian, LLC | New Mexico | 1,407 BBLs | 15,717 MCF | Oct 2021 - Sep 2026 |
| Scott'S Production, LLC | Kansas | 1,437 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Scout Energy Management LLC | Colorado | 213,131 BBLs | 895 MCF | Jan 1999 - Aug 2026 |
| Scout Energy Management LLC | Kansas | 2,168 BBLs | 3,922,645 MCF | Jan 1980 - Jun 2026 |
| Scout Energy Management LLC | New Mexico | 16,608 BBLs | 47,291 MCF | Oct 2021 - Aug 2026 |
| Scout Energy Management LLC | North Dakota | 68,239 BBLs | 9,475 MCF | Nov 2016 - Aug 2026 |
| Scout Energy Management, LLC | Utah | 440,575 BBLs | 586,814 MCF | Dec 2022 - Aug 2026 |
| Seagull Operating Co., Inc. | Louisiana | 1,771 BBLs | 0 MCF | Jan 1977 - Jan 2025 |