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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Koehn, Radell W. And Austin Koehn & Morgan Koehn | Kansas | 2,221 BBLs | 0 MCF | Jan 2010 - Sep 2021 |
| Kraken Development III, LLC | North Dakota | 116,401 BBLs | 267,969 MCF | Oct 2018 - Nov 2021 |
| Kraken Operating, LLC | Montana | 355,985 BBLs | 373,605 MCF | Sep 2013 - Sep 2021 |
| Kraken Operating, LLC | North Dakota | 392,164 BBLs | 1,171,826 MCF | Sep 2016 - Nov 2021 |
| L. D. Drilling, Inc. | Kansas | 20,632 BBLs | 0 MCF | Jan 1980 - Sep 2021 |
| Lachenmayr Oil LLC | Kansas | 2,609 BBLs | 0 MCF | Jan 1980 - Sep 2021 |
| Lafayette Oilfield Contractors, Inc. | Louisiana | 5,540 BBLs | 0 MCF | Nov 2020 - Jun 2021 |
| Land And Natural Resource Development, Inc. | Alabama | 4,189 BBLs | 73,885 MCF | Jul 1977 - Oct 2021 |
| Landmark Resources, Inc. | Kansas | 10,274 BBLs | 4,075 MCF | Jan 1980 - Sep 2021 |
| Lario Oil & Gas Company | Kansas | 30,101 BBLs | 39,737 MCF | Jan 1980 - Sep 2021 |
| Lawco Holdings, LLC | Kansas | 2,348 BBLs | 0 MCF | Aug 2014 - Sep 2021 |
| Laymon Oil II, LLC | Kansas | 12,534 BBLs | 0 MCF | Jan 1980 - Sep 2021 |
| LB Exploration, Inc. | Kansas | 1,869 BBLs | 22,972 MCF | Jan 1980 - Sep 2021 |
| Lboc, LLC | Arkansas | 2,077 BBLs | 0 MCF | Jan 2001 - Oct 2021 |
| Lebsack Oil Production Inc. | Kansas | 4,931 BBLs | 2,548 MCF | Jan 1980 - Sep 2021 |
| Legacy Reserves Operating LP | Montana | 15,053 BBLs | 8,676 MCF | Jun 2012 - Oct 2021 |
| Legacy Reserves Operating LP | North Dakota | 10,203 BBLs | 6,030 MCF | Oct 2006 - Nov 2021 |
| Legacy Reserves Operating LP | Wyoming | 27,179 BBLs | 579 MCF | Jan 1998 - Nov 2021 |
| Legacy Reserves Operating, LP | New Mexico | 124,608 BBLs | 438,177 MCF | May 2006 - Nov 2021 |
| Lewis Operating Company | Louisiana | 2,587 BBLs | 236 MCF | Oct 1988 - Jun 2021 |
| Liberty Resources Management Company, LLC | North Dakota | 109,115 BBLs | 373,034 MCF | Jun 2014 - Dec 2021 |
| Lime Rock Resources III-A, L.P. | North Dakota | 308,727 BBLs | 381,712 MCF | Mar 2015 - Nov 2021 |
| Llox, L.L.C. | Louisiana | 47,457 BBLs | 379,836 MCF | Feb 2015 - Jun 2021 |
| Lobo Operating, Inc. | Louisiana | 4,592 BBLs | 4,712 MCF | Mar 1995 - May 2021 |
| Loeb LLC* Herman L | Colorado | 2,192 BBLs | 12,152 MCF | Jan 1999 - Dec 2021 |
| Logos Operating, LLC | New Mexico | 42,522 BBLs | 3,617,699 MCF | Jul 2012 - Nov 2021 |
| Loil Oil LLC | Wyoming | 3,161 BBLs | 842 MCF | Nov 2016 - Nov 2021 |
| Lonewolf Operating, LLC | Montana | 2,421 BBLs | 15,403 MCF | Aug 2018 - Oct 2021 |
| Longfellow Energy, LP | New Mexico | 30,705 BBLs | 63,047 MCF | Jul 2017 - Nov 2021 |
| Longs Peak Resources LLC | Wyoming | 3,315 BBLs | 1,654 MCF | Feb 2016 - Oct 2021 |
| Lotus Operating Company, L.L.C. | Kansas | 4,488 BBLs | 60,563 MCF | Jan 1980 - Sep 2021 |
| Luff Exploration Company | North Dakota | 12,195 BBLs | 9,630 MCF | Dec 1996 - Nov 2021 |
| Lynx Operating Co., Inc. | New Mexico | 2,014 BBLs | 1,958 MCF | Jan 1999 - Nov 2021 |
| M & G DRLG Co Inc | New Mexico | 129 BBLs | 70,121 MCF | May 1995 - Nov 2021 |
| M & K Oil Company LLC | Wyoming | 19,155 BBLs | 70,592 MCF | Jan 1978 - Nov 2021 |
| M & M Exploration, Inc. | Kansas | 1,301 BBLs | 21,412 MCF | Mar 2002 - Sep 2021 |
| M & M Oil Company, L.L.C. | Louisiana | 2,611 BBLs | 0 MCF | Aug 1994 - Jun 2021 |
| M G Oil Inc | Kansas | 5,605 BBLs | 0 MCF | Jan 1980 - Sep 2021 |
| Mack Energy Co. | Louisiana | 4,662 BBLs | 10,371 MCF | Nov 2007 - Jul 2021 |
| Mack Energy Corp | New Mexico | 106,608 BBLs | 268,819 MCF | Jan 1993 - Nov 2021 |
| Magna Operating, LLC | Louisiana | 5,898 BBLs | 5,944 MCF | Sep 2010 - Jun 2021 |
| Magpie Operating, Inc | Colorado | 13,916 BBLs | 68,574 MCF | Jan 1999 - Nov 2021 |
| Mai Oil Operations, Inc. | Kansas | 46,416 BBLs | 623 MCF | Jan 1980 - Sep 2021 |
| Mammoth Exploration, LLC | New Mexico | 1,561 BBLs | 28,709 MCF | Nov 2017 - Nov 2021 |
| Mantle Oil & Gas, LLC | Louisiana | 2,061 BBLs | 0 MCF | Jan 2009 - May 2021 |
| Manzano LLC | New Mexico | 11,852 BBLs | 27,787 MCF | Mar 2005 - Oct 2021 |
| Mar-Lou Oil Co., LLC | Kansas | 2,267 BBLs | 0 MCF | Jan 1980 - Sep 2021 |
| Marathon Oil Company | North Dakota | 3,202,395 BBLs | 5,852,721 MCF | Jul 1979 - Nov 2021 |
| Marathon Oil Permian LLC | New Mexico | 391,098 BBLs | 1,673,135 MCF | Jul 2017 - Nov 2021 |
| Marlin Exploration, LLC | Louisiana | 2,598 BBLs | 519 MCF | Mar 2015 - Jul 2021 |