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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Rama Operating Co., Inc. | Kansas | 16,534 BBLs | 3,089 MCF | Jan 1980 - Dec 2024 |
| Ramshorn Resources, LLC | Kansas | 328 BBLs | 16,410 MCF | Jan 2010 - Dec 2024 |
| Ranch Oil Company | Wyoming | 1,903 BBLs | 0 MCF | Jan 1986 - Mar 2025 |
| Raney Oil Company, LLC | Kansas | 4,776 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Rangeview Resources Operating Co | Wyoming | 7,794 BBLs | 707,836 MCF | Jul 2022 - Feb 2025 |
| Ray Westall Operating, Inc. | New Mexico | 1,428 BBLs | 311 MCF | Oct 2012 - Feb 2025 |
| Raybaw Operating, LLC | New Mexico | 30,165 BBLs | 197,195 MCF | Oct 2020 - Feb 2025 |
| Raydon Exploration, Inc. | Kansas | 3,096 BBLs | 11,561 MCF | Feb 1980 - Dec 2024 |
| Raymond Oil Company, Inc. | Kansas | 9,428 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Red Hawk Petroleum LLC | Colorado | 1,978 BBLs | 4,361 MCF | Mar 2014 - Feb 2025 |
| Red Oak Energy, Inc. | Kansas | 2,968 BBLs | 0 MCF | Aug 1981 - Dec 2024 |
| Red Tiger Oil & Gas LLC | Wyoming | 14,443 BBLs | 0 MCF | Sep 2018 - Feb 2025 |
| Red Willow Production Company | Colorado | 0 BBLs | 2,945,080 MCF | Jan 1999 - Feb 2025 |
| Redbud Oil & Gas Operating, LLC | Kansas | 2,079 BBLs | 211,725 MCF | Jan 2010 - Dec 2024 |
| Redland Resources, LLC | Kansas | 2,495 BBLs | 12,285 MCF | Jan 1980 - Dec 2024 |
| Reefworks LLC | Michigan | 2,544 BBLs | 474 MCF | Jan 2022 - Feb 2025 |
| Reilly Oil E & P | Kansas | 1,304 BBLs | 0 MCF | Jan 2020 - Dec 2024 |
| Reliable Production LLC | New Mexico | 225 BBLs | 26,007 MCF | Feb 2017 - Feb 2025 |
| Remora Operating LLC | Mississippi | 1,150 BBLs | 31 MCF | Jan 2024 - Feb 2025 |
| Renegade Oil & Gas Company LLC | Colorado | 1,353 BBLs | 3,930 MCF | Jan 1999 - Feb 2025 |
| Resonance Exploration (North Dakota) LLC | North Dakota | 5,669 BBLs | 5,752 MCF | Dec 2014 - Mar 2025 |
| Ressler Well Service, Inc. | Kansas | 2,460 BBLs | 1,003 MCF | Jan 1980 - Dec 2024 |
| Rhombus Operating Co LTD | New Mexico | 2,508 BBLs | 1,542 MCF | Jan 1993 - Feb 2025 |
| Richardson And Son , Inc. | Kansas | 1,905 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Richardson Operating Co | Wyoming | 7,834 BBLs | 17,589 MCF | Jan 1982 - Feb 2025 |
| Richlan Drilling, A General Partnership | Kansas | 2,322 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Ridge Oil & Gas, LLC | Montana | 4,084 BBLs | 854 MCF | Feb 2022 - Feb 2025 |
| Rierson Energy, LLC | Kansas | 2,556 BBLs | 2,061 MCF | Jan 1980 - Dec 2024 |
| Riley Permian Operating Company, LLC | New Mexico | 120,036 BBLs | 533,035 MCF | Jun 2018 - Feb 2025 |
| Rim Operating Inc | Wyoming | 7,133 BBLs | 394 MCF | Jan 1988 - Mar 2025 |
| Rim Operating, Inc | Colorado | 61 BBLs | 30,609 MCF | Jan 1999 - Feb 2025 |
| Rim Operating, Inc. | New Mexico | 1,170 BBLs | 118,345 MCF | Nov 2017 - Feb 2025 |
| Rim Operating, Inc. | North Dakota | 10,177 BBLs | 5,012 MCF | Feb 2011 - Mar 2025 |
| Ritchie Exploration, Inc. | Kansas | 33,847 BBLs | 45,441 MCF | Jan 1980 - Dec 2024 |
| River Rock Operating, LLC | Kansas | 158 BBLs | 415,185 MCF | Jan 2010 - Dec 2024 |
| Riverside Energy Michigan LLC | Michigan | 0 BBLs | 2,686,936 MCF | Aug 2000 - Feb 2025 |
| RJ Energy, LLC | Kansas | 17,336 BBLs | 0 MCF | Jan 2010 - Dec 2024 |
| RJM Company | Kansas | 15,469 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| RL Investment, LLC | Kansas | 1,305 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Robert L Bayless Producer LLC | New Mexico | 184 BBLs | 94,019 MCF | Nov 1995 - Feb 2025 |
| Robert L Bayless Producer, LLC | Utah | 9,531 BBLs | 26,703 MCF | Aug 1958 - Feb 2025 |
| Robertson Energy, LLC | Louisiana | 2,684 BBLs | 3,610 MCF | Apr 2016 - Dec 2024 |
| Rockies Resources Holdings LLC | Wyoming | 300,862 BBLs | 278,186 MCF | Sep 2019 - Feb 2025 |
| Rockport Energy Solutions LLC | North Dakota | 24,873 BBLs | 67,177 MCF | Oct 2024 - Feb 2025 |
| 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 | 3,845 BBLs | 13,406 MCF | May 2021 - Feb 2025 |
| Rouxopco LLC | Louisiana | 3,557 BBLs | 0 MCF | Dec 2020 - Dec 2024 |
| Rover Operating, LLC | New Mexico | 4,624 BBLs | 8,277 MCF | Nov 2016 - Feb 2025 |
| Rubicon Oil & Gas, LLC | New Mexico | 1,923 BBLs | 81,797 MCF | Sep 2002 - Feb 2025 |