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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| New Era Petroleum Inc | Wyoming | 2,316 BBLs | 0 MCF | Feb 2010 - Aug 2025 |
| New Horizon Resources LLC | Montana | 7,935 BBLs | 433 MCF | Feb 2022 - Jul 2025 |
| New Millennium Resources, Inc. | North Dakota | 1,356 BBLs | 88 MCF | Apr 2002 - Aug 2025 |
| Nnogc Exploration & Production, LLC | Utah | 12,567 BBLs | 26,199 MCF | Nov 2012 - Jul 2025 |
| Noble Energy Inc | Colorado | 2,536,366 BBLs | 19,837,704 MCF | Jan 1997 - Jul 2025 |
| Norstar Petroleum, Inc. | Kansas | 2,110 BBLs | 67 MCF | Jan 1980 - Jun 2025 |
| North Fork Operating, LP | New Mexico | 3,217 BBLs | 40,818 MCF | Jan 2020 - Jul 2025 |
| North Shore Exploration & Prod LLC | Wyoming | 10,973 BBLs | 302,304 MCF | May 2015 - Aug 2025 |
| North Shore Exploration & Production, LLC | Utah | 275 BBLs | 31,340 MCF | Oct 2019 - Aug 2025 |
| North Silo Resources LLC | Wyoming | 137,919 BBLs | 212,554 MCF | Sep 2019 - Aug 2025 |
| North Slope Borough | Alaska | 0 BBLs | 85,407 MCF | Sep 1950 - Aug 2025 |
| Northern Lights Oil Company, LLC | Kansas | 1,442 BBLs | 593 MCF | Jan 1980 - Jun 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 | 432,823 BBLs | 3,931,182 MCF | Feb 2018 - Aug 2025 |
| Nuenergy LLC | Michigan | 1,725 BBLs | 63,063 MCF | Jul 2001 - Jul 2025 |
| O'Brien Energy Resources Corp. | Kansas | 2,305 BBLs | 34,030 MCF | May 2008 - Jun 2025 |
| Oasis Petroleum North America LLC | Montana | 48,001 BBLs | 66,121 MCF | Mar 2007 - Jul 2025 |
| Oasis Petroleum North America LLC | North Dakota | 2,688,110 BBLs | 7,408,767 MCF | May 2007 - Aug 2025 |
| Occidental Permian LTD | New Mexico | 460,724 BBLs | 914,181 MCF | Mar 1997 - Jul 2025 |
| Ogris Operating LLC | Colorado | 0 BBLs | 641,909 MCF | Sep 2020 - Jul 2025 |
| Oil Mountain Energy Inc | Wyoming | 1,219 BBLs | 0 MCF | Oct 2018 - Aug 2025 |
| Oil Producers, Inc. Of Kansas | Kansas | 8,140 BBLs | 53,572 MCF | Jan 1980 - Jun 2025 |
| Oil Search (Alaska), LLC | Alaska | 33,790 BBLs | 16,523 MCF | Sep 2023 - Aug 2025 |
| Oildigger Resources Fund L LLLP | Wyoming | 5,311 BBLs | 3,245 MCF | Sep 2016 - Aug 2025 |
| Oilfield Salvage & Service Company | Wyoming | 2,019 BBLs | 3,815 MCF | Jan 1978 - Aug 2025 |
| Oleum Energy LLC | New Mexico | 3,026 BBLs | 0 MCF | Aug 2022 - Jul 2025 |
| Olipdp II, LLC | Louisiana | 14,206 BBLs | 54,310 MCF | Jul 2022 - Dec 2024 |
| Opal Operating Company LLC | New Mexico | 4,052 BBLs | 86,561 MCF | Sep 2021 - Jul 2025 |
| Organic Energy Company LLC | Colorado | 2,514 BBLs | 3,059 MCF | Nov 2020 - Sep 2025 |
| Orx Resources, L.L.C. | Louisiana | 9,403 BBLs | 198,757 MCF | Jan 2010 - Dec 2024 |
| Owens Oil Company, LLC | Kansas | 2,193 BBLs | 0 MCF | Jan 2010 - Jun 2025 |
| Owens Petroleum LLC | Kansas | 1,645 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Own Resources Operating LLC | Colorado | 60 BBLs | 867,453 MCF | Jul 2018 - Jul 2025 |
| Own Resources Operating LLC | Kansas | 153 BBLs | 76,525 MCF | Jan 2010 - Jun 2025 |
| Oxy USA Inc | Colorado | 0 BBLs | 180,658 MCF | Jan 1999 - Aug 2025 |
| Oxy USA Inc | New Mexico | 3,797,534 BBLs | 21,745,899 MCF | Jan 1993 - Jul 2025 |
| Oxy USA Inc. | Kansas | 700 BBLs | 15,449 MCF | Jan 1980 - Jun 2025 |
| Oxy USA WTP Limited Partnership | New Mexico | 32,384 BBLs | 421,841 MCF | Jan 2001 - Jul 2025 |
| P. O. & G. Operating, LLC | Mississippi | 4,004 BBLs | 6,923 MCF | Dec 1976 - Jul 2025 |
| P.O. & G. Operating, LLC | North Dakota | 4,378 BBLs | 1,448 MCF | Jun 2018 - Aug 2025 |
| Palmer Oil, Inc. | Kansas | 3,146 BBLs | 19,261 MCF | Nov 2005 - Jun 2025 |
| Paloma Natural Gas, LLC | Louisiana | 0 BBLs | 12,616,935 MCF | Mar 2022 - Dec 2024 |
| Paloma Permian Assetco, LLC | New Mexico | 7,970 BBLs | 13,756 MCF | Oct 2024 - Jul 2025 |
| Palomino Petroleum, Inc. | Kansas | 31,416 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Pantera Energy Company | Kansas | 4,101 BBLs | 516 MCF | Jan 2010 - Jun 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 | 49,028 BBLs | 0 MCF | Jan 2010 - Jun 2025 |
| Paul Bowman Oil Trust | Kansas | 1,475 BBLs | 0 MCF | Jan 1980 - Jun 2025 |