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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Kantor Oil Company, LLC | Kansas | 2,493 BBLs | 0 MCF | Jan 1980 - May 2020 |
| Kash Oil And Gas, Inc | Louisiana | 2,807 BBLs | 10,041 MCF | Apr 1986 - Oct 2018 |
| Kelly Bayou Production | Louisiana | 2,421 BBLs | 0 MCF | Sep 1999 - Oct 2018 |
| Kentex Worland LLC | Wyoming | 2,300 BBLs | 75,746 MCF | Jan 2018 - Dec 2020 |
| Kerr McGee Oil & Gas Onshore LP | Colorado | 2,819,259 BBLs | 27,075,056 MCF | Jan 1999 - Jul 2020 |
| Kerr-McGee Oil & Gas Onshore LP | Wyoming | 5,927 BBLs | 34,236 MCF | Jan 1979 - Dec 2020 |
| Kerr-McGee Oil & Gas Onshore, LP | Utah | 22,577 BBLs | 6,367,499 MCF | Jan 2006 - Jul 2020 |
| Key Operating Company | Louisiana | 2,776 BBLs | 4,047 MCF | Jan 1995 - Sep 2018 |
| KFG Petroleum Corporation | Mississippi | 3,050 BBLs | 0 MCF | Dec 1976 - Jul 2020 |
| KGH Operating Company | Colorado | 2,323 BBLs | 54,816 MCF | Jun 2000 - Jul 2020 |
| Kinder Morgan Co2 Co LP | Colorado | 320 BBLs | 22,314,407 MCF | Apr 2000 - Jul 2020 |
| Kirby Oil Company | Louisiana | 4,102 BBLs | 0 MCF | Jan 1981 - Oct 2018 |
| Knighton Oil Company, Inc. | Kansas | 2,519 BBLs | 1,574 MCF | Jan 1980 - May 2020 |
| Koda Resources Operating, LLC | North Dakota | 20,765 BBLs | 28,022 MCF | Sep 2019 - Jul 2020 |
| Kraken Development III, LLC | North Dakota | 231,906 BBLs | 341,310 MCF | Oct 2018 - Jul 2020 |
| Kraken Operating, LLC | Montana | 258,003 BBLs | 341,474 MCF | Sep 2013 - Jun 2020 |
| Kraken Operating, LLC | North Dakota | 574,156 BBLs | 1,263,491 MCF | Sep 2016 - Jul 2020 |
| Krier, Kirby Oil, Inc. | Kansas | 2,564 BBLs | 0 MCF | Jan 1980 - May 2020 |
| L. D. Drilling, Inc. | Kansas | 15,679 BBLs | 0 MCF | Jan 1980 - May 2020 |
| La Veta Oil & Gas, LLC | Kansas | 2,098 BBLs | 0 MCF | Jan 1980 - May 2020 |
| Lachenmayr Oil LLC | Kansas | 3,547 BBLs | 0 MCF | Jan 1980 - May 2020 |
| Lambda Energy Resources LLC | Michigan | 67,565 BBLs | 498,755 MCF | Jan 1982 - Jun 2020 |
| Land And Natural Resource Development, Inc. | Alabama | 6,935 BBLs | 109,120 MCF | Jul 1977 - Apr 2020 |
| Landmark Resources, Inc. | Kansas | 5,384 BBLs | 5,490 MCF | Jan 1980 - May 2020 |
| Lario Oil & Gas Company | Kansas | 30,588 BBLs | 30,055 MCF | Jan 1980 - May 2020 |
| Lavaca River Operating Company, LLC | Louisiana | 11,785 BBLs | 6,312 MCF | Aug 2014 - Aug 2018 |
| Layline Oil And Gas LLC | Michigan | 10,485 BBLs | 6,624 MCF | Jan 1982 - Apr 2020 |
| Laymon Oil II, LLC | Kansas | 11,033 BBLs | 0 MCF | Jan 1980 - May 2020 |
| Lboc, LLC | Arkansas | 1,896 BBLs | 0 MCF | Jan 2001 - May 2020 |
| Lease Management Inc | Michigan | 5,392 BBLs | 0 MCF | Jan 1982 - Apr 2020 |
| Lebsack Oil Production Inc. | Kansas | 2,756 BBLs | 2,103 MCF | Jan 1980 - May 2020 |
| Legacy Reserves Operating LP | Montana | 14,840 BBLs | 9,611 MCF | Jun 2012 - Jul 2020 |
| Legacy Reserves Operating LP | North Dakota | 9,623 BBLs | 6,663 MCF | Oct 2006 - Jul 2020 |
| Legacy Reserves Operating LP | Wyoming | 29,915 BBLs | 462 MCF | Jan 1978 - Dec 2020 |
| Legacy Reserves Operating, LP | New Mexico | 219,671 BBLs | 803,054 MCF | May 2006 - Jul 2020 |
| Legacy Resources Co., L.P. | Louisiana | 756 BBLs | 57,844 MCF | Dec 1993 - Sep 2018 |
| Lewis Operating Company | Louisiana | 2,250 BBLs | 260 MCF | Oct 1988 - Aug 2018 |
| LH Operating, LLC | New Mexico | 18,528 BBLs | 14,491 MCF | Nov 2019 - Jun 2020 |
| Liberty Pioneer Energy Source, Inc | Utah | 0 BBLs | 50,143 MCF | Mar 2012 - Jul 2020 |
| Liberty Resources Management Company, LLC | North Dakota | 153,938 BBLs | 362,338 MCF | Jun 2014 - Aug 2020 |
| Lime Rock Resources II-A, L.P. | New Mexico | 93,649 BBLs | 410,962 MCF | Dec 2010 - Jul 2020 |
| Lime Rock Resources III-A, L.P. | Arkansas | 0 BBLs | 674,022 MCF | Jan 2001 - May 2020 |
| Lime Rock Resources III-A, L.P. | North Dakota | 380,930 BBLs | 338,966 MCF | Mar 2015 - Jul 2020 |
| Linde Inc | Colorado | 0 BBLs | 123,071 MCF | Jan 1999 - Jul 2020 |
| Linn Operating, Inc. | Louisiana | 5,529 BBLs | 255,566 MCF | Feb 2008 - Sep 2018 |
| Lko Operating LLC | Louisiana | 380 BBLs | 38,403 MCF | Aug 2014 - Sep 2018 |
| Lobo Operating, Inc. | Louisiana | 26,364 BBLs | 33,848 MCF | Mar 1995 - Aug 2018 |
| Lobo Production, Inc | Kansas | 0 BBLs | 33,324 MCF | Jan 1980 - May 2020 |
| Locin Oil Corporation | Colorado | 193 BBLs | 30,951 MCF | May 2000 - Jul 2020 |
| Loeb LLC* Herman L | Colorado | 2,559 BBLs | 14,878 MCF | Jan 1999 - Aug 2020 |