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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Nuevida Resources LLC | Colorado | 0 BBLs | 540,916 MCF | Jul 2023 - Apr 2025 |
| O'Brien Energy Resources Corp. | Kansas | 2,374 BBLs | 33,263 MCF | May 2008 - Feb 2025 |
| Oasis Petroleum North America LLC | Montana | 39,745 BBLs | 52,465 MCF | Mar 2007 - Apr 2025 |
| Oasis Petroleum North America LLC | North Dakota | 2,251,323 BBLs | 6,599,963 MCF | May 2007 - Apr 2025 |
| Occidental Permian LTD | New Mexico | 456,048 BBLs | 923,128 MCF | Mar 1997 - Apr 2025 |
| Oil Mountain Energy Inc | Wyoming | 1,221 BBLs | 0 MCF | Oct 2018 - May 2025 |
| Oil Producers, Inc. Of Kansas | Kansas | 6,018 BBLs | 41,358 MCF | Jan 1980 - Feb 2025 |
| Oil Search (Alaska), LLC | Alaska | 4,313 BBLs | 1,564 MCF | Sep 2023 - May 2025 |
| Oildigger Resources Fund L LLLP | Wyoming | 4,484 BBLs | 2,910 MCF | Sep 2016 - May 2025 |
| Oilfield Salvage & Service Company | Wyoming | 1,645 BBLs | 1,233 MCF | Jan 1978 - Apr 2025 |
| Olipdp II, LLC | Louisiana | 14,206 BBLs | 54,310 MCF | Jul 2022 - Dec 2024 |
| Opal Operating Company LLC | New Mexico | 3,905 BBLs | 39,203 MCF | Sep 2021 - Apr 2025 |
| Organic Energy Company LLC | Colorado | 2,211 BBLs | 2,669 MCF | Nov 2020 - May 2025 |
| Orx Resources, L.L.C. | Louisiana | 9,403 BBLs | 198,757 MCF | Jan 2010 - Dec 2024 |
| Owens Oil Company, LLC | Kansas | 2,346 BBLs | 0 MCF | Jan 2010 - Feb 2025 |
| Owens Petroleum LLC | Kansas | 1,078 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| Own Resources Operating LLC | Colorado | 75 BBLs | 855,790 MCF | Jul 2018 - Apr 2025 |
| Own Resources Operating LLC | Kansas | 276 BBLs | 78,763 MCF | Jan 2010 - Feb 2025 |
| Oxy USA Inc | Colorado | 0 BBLs | 179,172 MCF | Jan 1999 - Apr 2025 |
| Oxy USA Inc | New Mexico | 3,282,441 BBLs | 19,100,267 MCF | Jan 1993 - Apr 2025 |
| Oxy USA Inc. | Kansas | 702 BBLs | 13,901 MCF | Jan 1980 - Feb 2025 |
| Oxy USA WTP Limited Partnership | New Mexico | 34,553 BBLs | 434,100 MCF | Jan 2001 - Apr 2025 |
| P O & G Operating LLC | Wyoming | 13,215 BBLs | 25,995 MCF | Jan 2017 - Apr 2025 |
| P. O. & G. Operating, LLC | Mississippi | 2,396 BBLs | 5,892 MCF | Dec 1976 - Apr 2025 |
| P.O. & G. Operating, LLC | North Dakota | 4,299 BBLs | 1,218 MCF | Jun 2018 - Apr 2025 |
| P.O.&G. Operating, LLC | Kansas | 1,377 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| Padco LLC | Colorado | 1,155 BBLs | 0 MCF | Jan 1999 - Apr 2025 |
| Palmer Oil, Inc. | Kansas | 3,007 BBLs | 23,131 MCF | Nov 2005 - Feb 2025 |
| Paloma Natural Gas, LLC | Louisiana | 0 BBLs | 12,616,935 MCF | Mar 2022 - Dec 2024 |
| Paloma Permian Assetco, LLC | New Mexico | 12,920 BBLs | 27,699 MCF | Oct 2024 - May 2025 |
| Palomino Petroleum, Inc. | Kansas | 32,262 BBLs | 3,403 MCF | Jan 1980 - Feb 2025 |
| Pantera Energy Company | Kansas | 2,905 BBLs | 423 MCF | Jan 2010 - Feb 2025 |
| Paradigm Energy LLC | Louisiana | 2,262 BBLs | 0 MCF | Dec 2014 - Dec 2024 |
| Patterson Energy LLC | Kansas | 32,065 BBLs | 0 MCF | Jan 2010 - Feb 2025 |
| Paul Bowman Oil Trust | Kansas | 1,156 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| Paul Rankin Inc. | North Dakota | 1,164 BBLs | 40 MCF | May 2002 - Apr 2025 |
| Pauley Oil | Kansas | 2,122 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| Paxton Resources LLC | Michigan | 7,572 BBLs | 55,266 MCF | Dec 1995 - May 2025 |
| Pbex Operations, LLC | New Mexico | 9,749 BBLs | 3,203 MCF | Mar 2025 - Apr 2025 |
| PDC Energy Inc | Colorado | 2,001,956 BBLs | 23,970,810 MCF | Dec 1999 - Apr 2025 |
| PDS Resources LLC | Wyoming | 5,876 BBLs | 6,101 MCF | Aug 2023 - Apr 2025 |
| Peak Operating LLC | Kansas | 1,490 BBLs | 0 MCF | Jan 2010 - Feb 2025 |
| Peak Powder River Resources LLC | Wyoming | 86,150 BBLs | 448,011 MCF | Jan 2013 - Apr 2025 |
| Peakview Operating Company, LLC | Colorado | 1,428 BBLs | 755 MCF | Dec 2012 - Apr 2025 |
| Pennington Oil & Gas Int, LLC | Louisiana | 1,787 BBLs | 344 MCF | May 2001 - Dec 2024 |
| Penroc Oil Corp | New Mexico | 1,194 BBLs | 0 MCF | Jan 1993 - Apr 2025 |
| Perdido Energy Louisiana, LLC | Louisiana | 6,776 BBLs | 71,845 MCF | Dec 2017 - Dec 2024 |
| Permian Resources Operating, LLC | New Mexico | 3,069,362 BBLs | 10,413,864 MCF | Jul 2017 - Apr 2025 |
| Petro Operating Company LLC | Colorado | 25,354 BBLs | 273,723 MCF | Dec 2018 - Apr 2025 |
| Petro-Chem Operating Company, Inc. | Louisiana | 3,046 BBLs | 87,053 MCF | Jan 2009 - Dec 2024 |