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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Nnogc Exploration & Production, LLC | Utah | 12,567 BBLs | 26,199 MCF | Nov 2012 - Jul 2025 |
| Noble Energy Inc | Colorado | 2,538,481 BBLs | 19,838,400 MCF | Jan 1997 - Jul 2025 |
| Norstar Petroleum, Inc. | Kansas | 1,787 BBLs | 104 MCF | Jan 1980 - May 2025 |
| North Fork Operating, LP | New Mexico | 3,386 BBLs | 42,375 MCF | Jan 2020 - Jun 2025 |
| North Shore Exploration & Prod LLC | Wyoming | 13,217 BBLs | 310,650 MCF | May 2015 - Jul 2025 |
| North Shore Exploration & Production, LLC | Utah | 275 BBLs | 31,340 MCF | Oct 2019 - Jul 2025 |
| North Silo Resources LLC | Wyoming | 138,776 BBLs | 210,981 MCF | Sep 2019 - Jul 2025 |
| North Slope Borough | Alaska | 0 BBLs | 87,792 MCF | Sep 1950 - Jul 2025 |
| Northern Lights Oil Company, LLC | Kansas | 1,446 BBLs | 559 MCF | Jan 1980 - May 2025 |
| Northern Oil Production, Inc. | Montana | 5,913 BBLs | 2,197 MCF | May 1992 - Jul 2025 |
| Northwestern Corporation | Montana | 553 BBLs | 352,915 MCF | Apr 2004 - Jul 2025 |
| Novo Oil & Gas Northern Delaware, LLC | New Mexico | 411,458 BBLs | 3,842,682 MCF | Feb 2018 - Jul 2025 |
| Novy Oil & Gas, Inc. | Kansas | 1,821 BBLs | 1,387 MCF | Jan 1980 - May 2025 |
| Nuenergy LLC | Michigan | 1,918 BBLs | 59,735 MCF | Jul 2001 - Jul 2025 |
| O'Brien Energy Resources Corp. | Kansas | 2,257 BBLs | 36,541 MCF | May 2008 - May 2025 |
| Oasis Petroleum North America LLC | Montana | 48,001 BBLs | 66,121 MCF | Mar 2007 - Jul 2025 |
| Oasis Petroleum North America LLC | North Dakota | 2,574,788 BBLs | 7,289,925 MCF | May 2007 - Jul 2025 |
| Occidental Permian LTD | New Mexico | 444,034 BBLs | 1,109,734 MCF | Mar 1997 - Jun 2025 |
| Oil Mountain Energy Inc | Wyoming | 1,083 BBLs | 0 MCF | Oct 2018 - Jul 2025 |
| Oil Producers, Inc. Of Kansas | Kansas | 7,230 BBLs | 52,936 MCF | Jan 1980 - May 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 - Jul 2025 |
| Oilfield Salvage & Service Company | Wyoming | 2,506 BBLs | 3,179 MCF | Jan 1978 - Jul 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 | 2,514 BBLs | 3,059 MCF | Nov 2020 - Aug 2025 |
| Orx Resources, L.L.C. | Louisiana | 9,403 BBLs | 198,757 MCF | Jan 2010 - Dec 2024 |
| Owens Oil Company, LLC | Kansas | 2,018 BBLs | 0 MCF | Jan 2010 - May 2025 |
| Owens Petroleum LLC | Kansas | 1,754 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Own Resources Operating LLC | Colorado | 60 BBLs | 867,453 MCF | Jul 2018 - Jul 2025 |
| Own Resources Operating LLC | Kansas | 144 BBLs | 74,130 MCF | Jan 2010 - May 2025 |
| Oxy USA Inc | Colorado | 0 BBLs | 174,743 MCF | Jan 1999 - Jul 2025 |
| Oxy USA Inc | New Mexico | 3,979,360 BBLs | 21,342,793 MCF | Jan 1993 - Jun 2025 |
| Oxy USA Inc. | Kansas | 746 BBLs | 15,346 MCF | Jan 1980 - May 2025 |
| Oxy USA WTP Limited Partnership | New Mexico | 32,755 BBLs | 345,054 MCF | Jan 2001 - Jun 2025 |
| P. O. & G. Operating, LLC | Mississippi | 4,004 BBLs | 6,923 MCF | Dec 1976 - Jul 2025 |
| P.O. & G. Operating, LLC | North Dakota | 4,491 BBLs | 1,298 MCF | Jun 2018 - Jul 2025 |
| P.O.&G. Operating, LLC | Kansas | 1,093 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Palmer Oil, Inc. | Kansas | 3,052 BBLs | 20,232 MCF | Nov 2005 - May 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 | 31,883 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Pantera Energy Company | Kansas | 2,369 BBLs | 636 MCF | Jan 2010 - May 2025 |
| Paradigm Energy LLC | Louisiana | 2,262 BBLs | 0 MCF | Dec 2014 - Dec 2024 |
| Parish Operating LLC | Mississippi | 1,696 BBLs | 0 MCF | Jan 2024 - Jun 2025 |
| Patterson Energy LLC | Kansas | 49,945 BBLs | 0 MCF | Jan 2010 - May 2025 |
| Patterson Operations LLC | Kansas | 1,126 BBLs | 0 MCF | Apr 1982 - May 2025 |
| Paul Bowman Oil Trust | Kansas | 1,504 BBLs | 0 MCF | Jan 1980 - May 2025 |