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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| North Fork Operating, LP | New Mexico | 2,685 BBLs | 39,660 MCF | Jan 2020 - Aug 2026 |
| North Shore Exploration & Prod LLC | Wyoming | 3,263 BBLs | 158,384 MCF | May 2015 - Sep 2026 |
| North Silo Resources LLC | Wyoming | 88,753 BBLs | 153,696 MCF | Sep 2019 - Sep 2026 |
| North Slope Borough | Alaska | 0 BBLs | 155,984 MCF | Sep 1950 - Feb 2026 |
| Northern Lights Oil Company, LLC | Kansas | 1,410 BBLs | 670 MCF | Jan 1980 - Jun 2026 |
| Northern Oil Production, Inc. | Montana | 5,924 BBLs | 2,330 MCF | May 1992 - Aug 2026 |
| Northwestern Corporation | Montana | 489 BBLs | 346,542 MCF | Apr 2004 - Aug 2026 |
| Northwoods Land Inc | Wyoming | 8,500 BBLs | 18,435 MCF | Jan 2026 - Sep 2026 |
| Novo Oil & Gas Northern Delaware, LLC | New Mexico | 825,901 BBLs | 4,336,178 MCF | Feb 2018 - Aug 2026 |
| NSP Resources, LLC | New Mexico | 3,968 BBLs | 25,643 MCF | Mar 2026 - Aug 2026 |
| Nuenergy LLC | Michigan | 1,101 BBLs | 62,385 MCF | Jul 2001 - Sep 2026 |
| Nuevida Resources LLC | Colorado | 0 BBLs | 342,003 MCF | Jul 2023 - Jun 2026 |
| O'Brien Energy Resources Corp. | Kansas | 1,297 BBLs | 23,069 MCF | May 2008 - Jun 2026 |
| Oasis Petroleum North America LLC | Montana | 57,459 BBLs | 80,418 MCF | Mar 2007 - Aug 2026 |
| Oasis Petroleum North America LLC | North Dakota | 2,288,782 BBLs | 6,380,234 MCF | May 2007 - Aug 2026 |
| Occidental Permian LTD | New Mexico | 394,389 BBLs | 807,467 MCF | Mar 1997 - Aug 2026 |
| Ogris Operating LLC | Colorado | 0 BBLs | 576,596 MCF | Jan 1999 - Jul 2026 |
| Oil Producers, Inc. Of Kansas | Kansas | 7,589 BBLs | 41,328 MCF | Jan 1980 - Jun 2026 |
| Oildigger Resources Fund L LLLP | Wyoming | 5,822 BBLs | 3,558 MCF | Sep 2016 - Sep 2026 |
| Oilfield Salvage & Service Company | Wyoming | 1,543 BBLs | 0 MCF | Jan 1978 - Sep 2026 |
| Oleum Energy LLC | New Mexico | 1,277 BBLs | 0 MCF | Aug 2022 - Aug 2026 |
| Olipdp II, LLC | Louisiana | 14,206 BBLs | 54,310 MCF | Jul 2022 - Dec 2024 |
| Omimex Energy Inc | Michigan | 5,917 BBLs | 10,511 MCF | Jan 1982 - Aug 2026 |
| Opal Operating Company LLC | New Mexico | 3,887 BBLs | 166,426 MCF | Sep 2021 - Aug 2026 |
| Organic Energy Company LLC | Colorado | 2,239 BBLs | 2,732 MCF | Jul 2007 - Aug 2026 |
| Orx Resources, L.L.C. | Louisiana | 9,403 BBLs | 198,757 MCF | Jan 2010 - Dec 2024 |
| Osage Partners LLC | Wyoming | 2,305 BBLs | 0 MCF | Jan 2013 - Sep 2026 |
| Owens Oil Company, LLC | Kansas | 3,049 BBLs | 0 MCF | Jan 2010 - Jun 2026 |
| Owens Petroleum LLC | Kansas | 1,376 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Own Resources Operating LLC | Colorado | 62 BBLs | 802,614 MCF | Jan 1999 - Aug 2026 |
| Own Resources Operating LLC | Kansas | 314 BBLs | 74,337 MCF | Jan 2010 - Jun 2026 |
| Oxy USA Inc | Colorado | 0 BBLs | 100,737 MCF | Jan 1999 - Aug 2026 |
| Oxy USA Inc | New Mexico | 4,012,863 BBLs | 24,277,188 MCF | Jan 1993 - Aug 2026 |
| Oxy USA WTP Limited Partnership | New Mexico | 24,477 BBLs | 183,420 MCF | Jan 2001 - Aug 2026 |
| P O & G Operating LLC | Colorado | 5,878 BBLs | 0 MCF | Jan 1999 - Jun 2026 |
| P O & G Operating LLC | Wyoming | 12,214 BBLs | 24,449 MCF | Jan 2017 - Aug 2026 |
| P. O. & G. Operating LLC | Mississippi | 4,491 BBLs | 3,601 MCF | Dec 1976 - Aug 2026 |
| P.O. & G. Operating, LLC | North Dakota | 3,926 BBLs | 1,168 MCF | Jun 2018 - Aug 2026 |
| Palmer Oil, Inc. | Kansas | 3,221 BBLs | 13,001 MCF | Nov 2005 - Jun 2026 |
| Palo Alto Energy, LLC | North Dakota | 2,191 BBLs | 115 MCF | Dec 2025 - Aug 2026 |
| Paloma Natural Gas, LLC | Louisiana | 0 BBLs | 12,616,935 MCF | Mar 2022 - Dec 2024 |
| Paloma Permian Assetco, LLC | New Mexico | 301,489 BBLs | 2,103,322 MCF | Oct 2024 - Aug 2026 |
| Palomino Petroleum, Inc. | Kansas | 27,735 BBLs | 6,659 MCF | Jan 1980 - Jun 2026 |
| Pantera Energy Company | Kansas | 3,593 BBLs | 284 MCF | Jan 2010 - Jun 2026 |
| Paradigm Energy LLC | Louisiana | 2,262 BBLs | 0 MCF | Dec 2014 - Dec 2024 |
| Patterson Energy LLC | Kansas | 63,435 BBLs | 0 MCF | Jan 2010 - Jun 2026 |
| Paul Bowman Oil Trust | Kansas | 2,063 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Paul Rankin Inc. | North Dakota | 1,305 BBLs | 51 MCF | May 2002 - Aug 2026 |
| Pauley Oil | Kansas | 2,234 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Paxton Resources LLC | Michigan | 5,555 BBLs | 0 MCF | Dec 1995 - Sep 2026 |