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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Jettison, Inc. | North Dakota | 1,215 BBLs | 1,616 MCF | Jul 2002 - Sep 2025 |
| JMG Exploration, Inc. | North Dakota | 0 BBLs | 0 MCF | Jul 2005 - Dec 2007 |
| John B. Hawley, Jr. Trust #1 | North Dakota | 0 BBLs | 0 MCF | Jul 1971 - Apr 1979 |
| John L. Cox | North Dakota | 0 BBLs | 0 MCF | Jan 1986 - Aug 1992 |
| Jolette Oil (USA), LLC | North Dakota | 0 BBLs | 0 MCF | Mar 2004 - Aug 2004 |
| Jordan Exploration Company, L.L.C. | North Dakota | 0 BBLs | 0 MCF | May 2001 - Mar 2024 |
| Journey Operating, L.L.C. | North Dakota | 0 BBLs | 0 MCF | Jul 2002 - Jun 2006 |
| Kaiser-Francis Oil Company | North Dakota | 928 BBLs | 736 MCF | Jul 2002 - Aug 2025 |
| Kennedy & Mitchell, Inc. | North Dakota | 0 BBLs | 0 MCF | Feb 1983 - Sep 2008 |
| Kerr-McGee Corp. | North Dakota | 0 BBLs | 0 MCF | Feb 1958 - Nov 1994 |
| Kerr-McGee Oil & Gas Onshore LP | North Dakota | 0 BBLs | 0 MCF | Jun 1998 - Mar 2007 |
| Khoil Dakota Operating, LLC | North Dakota | 0 BBLs | 0 MCF | Jul 2022 - Aug 2025 |
| Kissinger Petroleum Corp. | North Dakota | 0 BBLs | 0 MCF | Dec 1975 - Nov 1983 |
| Koda Resources Operating, LLC | North Dakota | 257,238 BBLs | 316,588 MCF | Sep 2019 - Aug 2025 |
| Kodiak Oil & Gas (USA) Inc. | North Dakota | 0 BBLs | 0 MCF | Jul 2006 - Sep 2020 |
| Kraken Development III, LLC | North Dakota | 0 BBLs | 0 MCF | Oct 2018 - Nov 2021 |
| Kraken Operating, LLC | North Dakota | 960,448 BBLs | 2,258,083 MCF | Sep 2016 - Aug 2025 |
| KRB Enterprise, Inc. | North Dakota | 0 BBLs | 0 MCF | Jul 2002 - Aug 2025 |
| KSD, Inc. | North Dakota | 0 BBLs | 0 MCF | Jul 2002 - May 2004 |
| La Habana Corp. | North Dakota | 0 BBLs | 0 MCF | Jul 1966 - Sep 1966 |
| Ladd Petroleum Corp. | North Dakota | 0 BBLs | 0 MCF | Dec 1980 - Dec 1987 |
| Lamar Hunt | North Dakota | 0 BBLs | 0 MCF | Jul 1978 - Oct 2003 |
| Layline Petroleum I, LLC | North Dakota | 0 BBLs | 0 MCF | Feb 2009 - Apr 2013 |
| Lear Petroleum Exploration, Inc. | North Dakota | 0 BBLs | 0 MCF | Jul 1981 - Oct 1984 |
| Leede Oil & Gas, Inc. | North Dakota | 0 BBLs | 0 MCF | Jun 1990 - May 1991 |
| Legacy Oil & Gas ND, Inc. | North Dakota | 0 BBLs | 0 MCF | May 2011 - Feb 2016 |
| Legacy Reserves Operating LP | North Dakota | 3,170 BBLs | 2,799 MCF | Oct 2006 - Aug 2025 |
| Leland Oil & Gas, LLC | North Dakota | 130 BBLs | 117 MCF | Oct 2009 - Aug 2025 |
| Leomac, LLC | North Dakota | 0 BBLs | 0 MCF | Feb 2005 - Jun 2009 |
| Liberty Resources LLC | North Dakota | 0 BBLs | 0 MCF | Dec 2011 - May 2014 |
| Liberty Resources Management Company, LLC | North Dakota | 2,665 BBLs | 1,333 MCF | Jun 2014 - Aug 2025 |
| Lime Rock Resources III-A, L.P. | North Dakota | 247,305 BBLs | 340,484 MCF | Mar 2015 - Aug 2025 |
| Lime Rock Resources V-A, LP | North Dakota | 64,200 BBLs | 630,895 MCF | Jul 2022 - Aug 2025 |
| Lloyd H. Smith | North Dakota | 0 BBLs | 0 MCF | Feb 1966 - Mar 1972 |
| Long Petroleum, Inc. | North Dakota | 0 BBLs | 0 MCF | Jun 2020 - Jun 2020 |
| Louisiana Land & Exploration Co. | North Dakota | 0 BBLs | 0 MCF | Oct 1984 - Sep 2013 |
| Lubar Oil Co. | North Dakota | 0 BBLs | 0 MCF | Jul 1957 - Nov 1983 |
| Luff Exploration Company | North Dakota | 9,538 BBLs | 7,493 MCF | Dec 1996 - Aug 2025 |
| Lyco Energy Corporation | North Dakota | 0 BBLs | 0 MCF | Jul 2002 - Feb 2006 |
| Lyda Hunt-Herbert Trusts | North Dakota | 0 BBLs | 0 MCF | Dec 1962 - Dec 1962 |
| M3 Energy, LLC | North Dakota | 0 BBLs | 0 MCF | Apr 2005 - Dec 2006 |
| Macquarie Barnett LLC | North Dakota | 0 BBLs | 0 MCF | Jul 2008 - Jul 2009 |
| Mallard Petroleum, Inc. | North Dakota | 0 BBLs | 0 MCF | Jan 1963 - Sep 1964 |
| Mammoth Exploration LLC | North Dakota | 0 BBLs | 0 MCF | Jan 2005 - Jan 2008 |
| Mancal Resources Corporation | North Dakota | 0 BBLs | 0 MCF | Nov 2002 - Aug 2019 |
| Mann Enterprises, LLC | North Dakota | 0 BBLs | 0 MCF | Nov 2011 - May 2012 |
| Mann Oil Company, LLC | North Dakota | 0 BBLs | 0 MCF | Dec 2011 - Jun 2023 |
| Mar-Win Development Co. | North Dakota | 0 BBLs | 0 MCF | Apr 1959 - Nov 1988 |
| Marathon Oil Company | North Dakota | 2,013,728 BBLs | 5,185,112 MCF | Jul 1979 - Aug 2025 |
| Marsha Azar | North Dakota | 0 BBLs | 0 MCF | Jul 2002 - Jan 2017 |