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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| K & N Petroleum, Inc. | Kansas | 5,554 BBLs | 0 MCF | Jan 1980 - Feb 2019 |
| K P Kauffman Company Inc | Colorado | 15,636 BBLs | 120,410 MCF | Jan 1999 - Mar 2019 |
| K P Kauffman Company Inc | New Mexico | 2,763 BBLs | 0 MCF | Oct 2004 - Dec 2018 |
| K3 Oil & Gas Operating Company | Kansas | 4,122 BBLs | 12,799 MCF | Jan 2010 - Feb 2019 |
| Kahan And Associates, Inc | Kansas | 8,133 BBLs | 0 MCF | Jan 1980 - Feb 2019 |
| Kaiser Francis Oil Co | Wyoming | 95,500 BBLs | 167,708 MCF | Jan 1978 - Dec 2019 |
| Kaiser-Francis Oil Co | New Mexico | 242,221 BBLs | 542,957 MCF | Jan 1993 - Jan 2019 |
| Kaiser-Francis Oil Company | Louisiana | 10,711 BBLs | 99,698 MCF | Aug 1981 - Sep 2018 |
| Kaiser-Francis Oil Company | North Dakota | 32,612 BBLs | 33,858 MCF | Jul 2002 - Apr 2019 |
| Kansas Natural Gas Operating, LC | Kansas | 0 BBLs | 159,667 MCF | Jan 2010 - Feb 2019 |
| Kantor Oil Company, LLC | Kansas | 3,702 BBLs | 0 MCF | Jan 1980 - Feb 2019 |
| Kash Oil And Gas, Inc | Louisiana | 4,347 BBLs | 9,886 MCF | Apr 1986 - Oct 2018 |
| Kentex Worland LLC | Wyoming | 3,433 BBLs | 89,835 MCF | Jan 2018 - Dec 2019 |
| Kerr McGee Oil & Gas Onshore LP | Colorado | 2,539,125 BBLs | 20,629,223 MCF | Jan 1999 - Mar 2019 |
| Kerr-McGee Oil & Gas Onshore LP | Wyoming | 9,871 BBLs | 51,210 MCF | Jan 1979 - Dec 2019 |
| Kerr-McGee Oil & Gas Onshore, LP | Utah | 31,933 BBLs | 8,180,202 MCF | Jan 2006 - Apr 2019 |
| Key Operating Company | Louisiana | 3,087 BBLs | 3,528 MCF | Jan 1995 - Sep 2018 |
| KFG Petroleum Corporation | Mississippi | 3,579 BBLs | 0 MCF | Dec 1976 - Apr 2019 |
| KGH Operating Company | Colorado | 1,556 BBLs | 53,585 MCF | Jun 2000 - Mar 2019 |
| Kinder Morgan Co2 Co LP | Colorado | 0 BBLs | 36,442,751 MCF | Apr 2000 - Apr 2019 |
| Kirby Oil Company | Louisiana | 3,559 BBLs | 0 MCF | Jan 1981 - Oct 2018 |
| Knighton Oil Company, Inc. | Kansas | 7,458 BBLs | 1,730 MCF | Jan 1980 - Feb 2019 |
| Kraken Development III, LLC | North Dakota | 45,244 BBLs | 83,150 MCF | Oct 2018 - Apr 2019 |
| Kraken Operating, LLC | Montana | 225,842 BBLs | 239,866 MCF | Sep 2013 - Feb 2019 |
| Kraken Operating, LLC | North Dakota | 912,992 BBLs | 1,572,520 MCF | Sep 2016 - Apr 2019 |
| L. D. Drilling, Inc. | Kansas | 19,972 BBLs | 165 MCF | Jan 1980 - Feb 2019 |
| Lachenmayr Oil LLC | Kansas | 2,600 BBLs | 0 MCF | Jan 1980 - Feb 2019 |
| Land And Natural Resource Development, Inc. | Alabama | 7,966 BBLs | 137,480 MCF | Jul 1977 - Mar 2019 |
| Landmark Resources, Inc. | Kansas | 10,881 BBLs | 5,882 MCF | Jan 1980 - Feb 2019 |
| Lario Oil & Gas Company | Kansas | 35,493 BBLs | 46,591 MCF | Jan 1980 - Feb 2019 |
| Larson Operating Company | Kansas | 20,226 BBLs | 0 MCF | Jan 1980 - Feb 2019 |
| Lavaca River Operating Company, LLC | Louisiana | 14,726 BBLs | 8,348 MCF | Aug 2014 - Aug 2018 |
| Laymon Oil II, LLC | Kansas | 11,754 BBLs | 0 MCF | Jan 1980 - Feb 2019 |
| LB Exploration, Inc. | Kansas | 2,555 BBLs | 18,563 MCF | Jan 1980 - Feb 2019 |
| Lease Management Inc | Michigan | 5,030 BBLs | 0 MCF | Jan 1982 - Apr 2018 |
| Lebsack Oil Production Inc. | Kansas | 6,816 BBLs | 3,444 MCF | Jan 1980 - Feb 2019 |
| Legacy Reserves Operating LP | Montana | 16,668 BBLs | 8,653 MCF | Jun 2012 - Apr 2019 |
| Legacy Reserves Operating LP | North Dakota | 14,296 BBLs | 10,644 MCF | Oct 2006 - Apr 2019 |
| Legacy Reserves Operating LP | Wyoming | 31,869 BBLs | 303 MCF | Jan 1978 - Dec 2019 |
| Legacy Reserves Operating, LP | New Mexico | 337,057 BBLs | 881,540 MCF | May 2006 - Jan 2019 |
| Legacy Resources Co., L.P. | Louisiana | 637 BBLs | 54,441 MCF | Dec 1993 - Sep 2018 |
| Liberty Pioneer Energy Source, Inc | Utah | 0 BBLs | 61,051 MCF | Mar 2012 - May 2019 |
| Liberty Resources Management Company, LLC | North Dakota | 171,770 BBLs | 382,729 MCF | Jun 2014 - May 2019 |
| Lime Rock Resources II-A, L.P. | New Mexico | 90,662 BBLs | 387,353 MCF | Dec 2010 - Jan 2019 |
| Lime Rock Resources III-A, L.P. | Arkansas | 0 BBLs | 706,671 MCF | Jan 2001 - Mar 2019 |
| Lime Rock Resources III-A, L.P. | North Dakota | 568,109 BBLs | 468,163 MCF | Mar 2015 - Apr 2019 |
| Linde Inc | Colorado | 0 BBLs | 76,394 MCF | Jan 1999 - Feb 2019 |
| Linn Operating LLC | Michigan | 1,411 BBLs | 1,235,668 MCF | Jan 1982 - Apr 2018 |
| Linn Operating, Inc. | Louisiana | 6,724 BBLs | 901,322 MCF | Feb 2008 - Sep 2018 |
| Llox, L.L.C. | Louisiana | 36,885 BBLs | 167,427 MCF | Feb 2015 - Jul 2018 |