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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Norstar Petroleum, Inc. | Kansas | 1,907 BBLs | 0 MCF | Jan 1980 - May 2026 |
| North Fork Operating, LP | New Mexico | 2,804 BBLs | 65,529 MCF | Jan 2020 - Jul 2026 |
| North Shore Exploration & Prod LLC | Wyoming | 2,142 BBLs | 165,404 MCF | May 2015 - Jul 2026 |
| North Silo Resources LLC | Wyoming | 78,937 BBLs | 152,725 MCF | Sep 2019 - Jul 2026 |
| North Slope Borough | Alaska | 0 BBLs | 155,984 MCF | Sep 1950 - Feb 2026 |
| Northern Lights Oil Company, LLC | Kansas | 1,085 BBLs | 614 MCF | Jan 1980 - May 2026 |
| Northern Oil Production, Inc. | Montana | 5,924 BBLs | 2,330 MCF | May 1992 - Jul 2026 |
| Northwestern Corporation | Montana | 489 BBLs | 346,542 MCF | Apr 2004 - Jul 2026 |
| Northwoods Land Inc | Wyoming | 9,151 BBLs | 18,484 MCF | Jan 2026 - Jul 2026 |
| Novo Oil & Gas Northern Delaware, LLC | New Mexico | 608,761 BBLs | 4,255,895 MCF | Feb 2018 - Jul 2026 |
| Novy Oil & Gas, Inc. | Kansas | 1,154 BBLs | 0 MCF | Jan 1980 - May 2026 |
| NSP Resources, LLC | New Mexico | 3,590 BBLs | 22,575 MCF | Mar 2026 - Jul 2026 |
| O'Brien Energy Resources Corp. | Kansas | 2,066 BBLs | 24,127 MCF | May 2008 - May 2026 |
| Oasis Petroleum North America LLC | Montana | 57,459 BBLs | 80,418 MCF | Mar 2007 - Jul 2026 |
| Oasis Petroleum North America LLC | North Dakota | 1,994,085 BBLs | 6,067,649 MCF | May 2007 - Jul 2026 |
| Occidental Permian LTD | New Mexico | 388,459 BBLs | 774,477 MCF | Mar 1997 - Jul 2026 |
| Ogris Operating LLC | Colorado | 0 BBLs | 592,225 MCF | Jan 1999 - Jul 2026 |
| Oil Mountain Energy Inc | Wyoming | 1,244 BBLs | 0 MCF | Oct 2018 - Jul 2026 |
| Oil Partners, LLC | Kansas | 964 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Oil Producers, Inc. Of Kansas | Kansas | 6,740 BBLs | 41,070 MCF | Jan 1980 - May 2026 |
| Oildigger Resources Fund L LLLP | Wyoming | 4,566 BBLs | 3,057 MCF | Sep 2016 - Jul 2026 |
| Oilfield Salvage & Service Company | Wyoming | 2,525 BBLs | 2,565 MCF | Jan 1978 - Jul 2026 |
| Olipdp II, LLC | Louisiana | 14,206 BBLs | 54,310 MCF | Jul 2022 - Dec 2024 |
| Opal Operating Company LLC | New Mexico | 3,724 BBLs | 140,921 MCF | Sep 2021 - Jul 2026 |
| Organic Energy Company LLC | Colorado | 2,389 BBLs | 2,779 MCF | Jul 2007 - Aug 2026 |
| Orx Resources, L.L.C. | Louisiana | 9,403 BBLs | 198,757 MCF | Jan 2010 - Dec 2024 |
| Owens Oil Company, LLC | Kansas | 2,474 BBLs | 0 MCF | Jan 2010 - May 2026 |
| Owens Petroleum LLC | Kansas | 1,130 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Own Resources Operating LLC | Colorado | 0 BBLs | 832,059 MCF | Jan 1999 - Jul 2026 |
| Own Resources Operating LLC | Kansas | 161 BBLs | 71,928 MCF | Jan 2010 - May 2026 |
| Oxy USA Inc | Colorado | 0 BBLs | 148,000 MCF | Jan 1999 - Jul 2026 |
| Oxy USA Inc | New Mexico | 3,799,024 BBLs | 23,618,775 MCF | Jan 1993 - Jul 2026 |
| Oxy USA WTP Limited Partnership | New Mexico | 26,606 BBLs | 199,555 MCF | Jan 2001 - Jul 2026 |
| P O & G Operating LLC | Wyoming | 10,769 BBLs | 24,076 MCF | Jan 2017 - Jul 2026 |
| P. O. & G. Operating LLC | Mississippi | 1,737 BBLs | 0 MCF | Dec 1976 - Jun 2026 |
| P.O. & G. Operating, LLC | North Dakota | 4,602 BBLs | 1,999 MCF | Jun 2018 - Jul 2026 |
| Palmer Oil, Inc. | Kansas | 2,083 BBLs | 13,002 MCF | Nov 2005 - May 2026 |
| Palo Alto Energy, LLC | North Dakota | 1,898 BBLs | 0 MCF | Dec 2025 - Jul 2026 |
| Paloma Natural Gas, LLC | Louisiana | 0 BBLs | 12,616,935 MCF | Mar 2022 - Dec 2024 |
| Paloma Permian Assetco, LLC | New Mexico | 337,105 BBLs | 2,104,620 MCF | Oct 2024 - Jul 2026 |
| Palomino Petroleum, Inc. | Kansas | 28,635 BBLs | 7,408 MCF | Jan 1980 - May 2026 |
| Pantera Energy Company | Kansas | 4,144 BBLs | 373 MCF | Jan 2010 - May 2026 |
| Paradigm Energy LLC | Louisiana | 2,262 BBLs | 0 MCF | Dec 2014 - Dec 2024 |
| Patterson Energy LLC | Kansas | 60,183 BBLs | 11 MCF | Jan 2010 - May 2026 |
| Patterson Operations LLC | Kansas | 1,299 BBLs | 0 MCF | Apr 1982 - May 2026 |
| Paul Bowman Oil Trust | Kansas | 1,147 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Paul Rankin Inc. | North Dakota | 1,670 BBLs | 64 MCF | May 2002 - Jul 2026 |
| Pauley Oil | Kansas | 2,446 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Pbex Operations, LLC | New Mexico | 144,677 BBLs | 170,013 MCF | Mar 2025 - Jul 2026 |
| PDC Energy Inc | Colorado | 2,057,997 BBLs | 27,702,146 MCF | Jan 1999 - Jul 2026 |