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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| North Shore Exploration & Production, LLC | Utah | 274 BBLs | 33,447 MCF | Oct 2019 - Jun 2025 |
| North Silo Resources LLC | Wyoming | 138,776 BBLs | 210,981 MCF | Sep 2019 - Jun 2025 |
| North Slope Borough | Alaska | 0 BBLs | 87,792 MCF | Sep 1950 - Jul 2025 |
| Northern Lights Oil Company, LLC | Kansas | 1,763 BBLs | 563 MCF | Jan 1980 - Apr 2025 |
| Northern Oil Production, Inc. | Montana | 6,216 BBLs | 2,390 MCF | May 1992 - Jun 2025 |
| Northwestern Corporation | Montana | 476 BBLs | 339,801 MCF | Apr 2004 - Jun 2025 |
| Novo Oil & Gas Northern Delaware, LLC | New Mexico | 411,458 BBLs | 3,842,682 MCF | Feb 2018 - Jun 2025 |
| Novy Oil & Gas, Inc. | Kansas | 2,476 BBLs | 1,439 MCF | Jan 1980 - Apr 2025 |
| Nuenergy LLC | Michigan | 1,918 BBLs | 59,735 MCF | Jul 2001 - Jul 2025 |
| Nuevida Resources LLC | Colorado | 0 BBLs | 59,731 MCF | Jul 2023 - Jun 2025 |
| O'Brien Energy Resources Corp. | Kansas | 2,403 BBLs | 39,606 MCF | May 2008 - Apr 2025 |
| Oasis Petroleum North America LLC | Montana | 41,907 BBLs | 56,168 MCF | Mar 2007 - Jun 2025 |
| Oasis Petroleum North America LLC | North Dakota | 2,548,254 BBLs | 7,068,205 MCF | May 2007 - Jun 2025 |
| Occidental Permian LTD | New Mexico | 444,034 BBLs | 1,109,734 MCF | Mar 1997 - Jun 2025 |
| Oil Producers, Inc. Of Kansas | Kansas | 7,036 BBLs | 53,626 MCF | Jan 1980 - Apr 2025 |
| Oil Search (Alaska), LLC | Alaska | 16,232 BBLs | 6,275 MCF | Sep 2023 - Jul 2025 |
| Oildigger Resources Fund L LLLP | Wyoming | 4,586 BBLs | 2,849 MCF | Sep 2016 - Jun 2025 |
| Oilfield Salvage & Service Company | Wyoming | 2,506 BBLs | 3,179 MCF | Jan 1978 - Jun 2025 |
| Oleum Energy LLC | New Mexico | 3,671 BBLs | 0 MCF | Aug 2022 - Jun 2025 |
| Olipdp II, LLC | Louisiana | 14,206 BBLs | 54,310 MCF | Jul 2022 - Dec 2024 |
| Omimex Energy Inc | Michigan | 4,853 BBLs | 3,027 MCF | Jan 1982 - Jun 2025 |
| Opal Operating Company LLC | New Mexico | 4,239 BBLs | 138,152 MCF | Sep 2021 - Jun 2025 |
| Organic Energy Company LLC | Colorado | 2,554 BBLs | 2,945 MCF | Nov 2020 - Jul 2025 |
| Orx Resources, L.L.C. | Louisiana | 9,403 BBLs | 198,757 MCF | Jan 2010 - Dec 2024 |
| Owens Oil Company, LLC | Kansas | 2,049 BBLs | 0 MCF | Jan 2010 - Apr 2025 |
| Owens Petroleum LLC | Kansas | 1,590 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Own Resources Operating LLC | Colorado | 46 BBLs | 845,293 MCF | Jul 2018 - Jun 2025 |
| Own Resources Operating LLC | Kansas | 151 BBLs | 78,625 MCF | Jan 2010 - Apr 2025 |
| Oxy USA Inc | Colorado | 0 BBLs | 259,824 MCF | Jan 1999 - Jun 2025 |
| Oxy USA Inc | New Mexico | 3,979,360 BBLs | 21,342,793 MCF | Jan 1993 - Jun 2025 |
| Oxy USA Inc. | Kansas | 692 BBLs | 13,559 MCF | Jan 1980 - Apr 2025 |
| Oxy USA WTP Limited Partnership | New Mexico | 32,755 BBLs | 345,054 MCF | Jan 2001 - Jun 2025 |
| P. O. & G. Operating, LLC | Mississippi | 2,653 BBLs | 8,269 MCF | Dec 1976 - May 2025 |
| P.O. & G. Operating, LLC | North Dakota | 4,642 BBLs | 1,515 MCF | Jun 2018 - Jul 2025 |
| Palmer Oil, Inc. | Kansas | 3,134 BBLs | 21,766 MCF | Nov 2005 - Apr 2025 |
| Paloma Natural Gas, LLC | Louisiana | 0 BBLs | 12,616,935 MCF | Mar 2022 - Dec 2024 |
| Paloma Permian Assetco, LLC | New Mexico | 8,734 BBLs | 18,321 MCF | Oct 2024 - Jun 2025 |
| Palomino Petroleum, Inc. | Kansas | 32,274 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Pantera Energy Company | Kansas | 3,079 BBLs | 500 MCF | Jan 2010 - Apr 2025 |
| Paradigm Energy LLC | Louisiana | 2,262 BBLs | 0 MCF | Dec 2014 - Dec 2024 |
| Patterson Energy LLC | Kansas | 46,130 BBLs | 0 MCF | Jan 2010 - Apr 2025 |
| Paul Bowman Oil Trust | Kansas | 1,826 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Pauley Oil | Kansas | 2,635 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Paxton Resources LLC | Michigan | 6,762 BBLs | 57,162 MCF | Dec 1995 - Jun 2025 |
| Pbex Operations, LLC | New Mexico | 72,922 BBLs | 55,864 MCF | Mar 2025 - Jun 2025 |
| PDC Energy Inc | Colorado | 1,982,579 BBLs | 22,997,122 MCF | Dec 1999 - Jun 2025 |
| Peak Operating LLC | Kansas | 1,938 BBLs | 0 MCF | Jan 2010 - Apr 2025 |
| Pennington Oil & Gas Int, LLC | Louisiana | 1,787 BBLs | 344 MCF | May 2001 - Dec 2024 |
| Perdido Energy Louisiana, LLC | Louisiana | 6,776 BBLs | 71,845 MCF | Dec 2017 - Dec 2024 |
| Permian Resources Operating, LLC | New Mexico | 2,765,364 BBLs | 10,136,340 MCF | Jul 2017 - Jun 2025 |