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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Kaiser-Francis Oil Co | New Mexico | 1,136,035 BBLs | 5,952,644 MCF | Jan 1993 - Jun 2024 |
| Kaiser-Francis Oil Company | North Dakota | 16,628 BBLs | 27,892 MCF | Jul 2002 - Jul 2024 |
| Kansas Energy Company, L.L.C. | Kansas | 1,824 BBLs | 0 MCF | Jan 1980 - May 2024 |
| Kansas Natural Gas Operating, LC | Kansas | 0 BBLs | 111,489 MCF | Jan 2010 - May 2024 |
| Kantor Oil Company, LLC | Kansas | 2,509 BBLs | 0 MCF | Jan 1980 - May 2024 |
| Kelly Bayou Production | Louisiana | 1,629 BBLs | 0 MCF | Sep 1999 - Jan 2024 |
| Kennedy Oil | Wyoming | 1,493 BBLs | 12,556 MCF | Apr 1984 - Jul 2024 |
| Kentex Worland LLC | Wyoming | 3,763 BBLs | 136,976 MCF | Apr 2019 - Jul 2024 |
| Kerr McGee Oil & Gas Onshore LP | Colorado | 2,290,934 BBLs | 23,013,650 MCF | Jan 1999 - Jun 2024 |
| Kerr-McGee Oil & Gas Onshore LP | Wyoming | 2,346 BBLs | 10,353 MCF | Mar 1994 - Jul 2024 |
| Key Operating Company | Louisiana | 29,746 BBLs | 58,989 MCF | Jan 1995 - Jan 2024 |
| KGH Operating Company | Colorado | 847 BBLs | 33,221 MCF | Jun 2000 - Jun 2024 |
| Kinder Morgan Co2 Co LP | Colorado | 256 BBLs | 21,942,828 MCF | Apr 2000 - Jul 2024 |
| Knighton Oil Company, Inc. | Kansas | 7,387 BBLs | 1,684 MCF | Jan 1980 - May 2024 |
| Koda Resources Operating, LLC | North Dakota | 124,777 BBLs | 116,324 MCF | Sep 2019 - Jul 2024 |
| Koron Investments, Inc. | Kansas | 1,484 BBLs | 0 MCF | Jan 1980 - May 2024 |
| Kraken Operating, LLC | Montana | 341,193 BBLs | 666,664 MCF | Sep 2013 - Jun 2024 |
| Kraken Operating, LLC | North Dakota | 631,080 BBLs | 1,522,560 MCF | Sep 2016 - Jul 2024 |
| Krier, Kirby Oil, Inc. | Kansas | 1,446 BBLs | 0 MCF | Jan 1980 - May 2024 |
| L. D. Drilling, Inc. | Kansas | 17,293 BBLs | 567 MCF | Jan 1980 - May 2024 |
| Lachenmayr Oil LLC | Kansas | 3,481 BBLs | 1,320 MCF | Jan 1980 - May 2024 |
| Lafayette Oilfield Contractors, Inc. | Louisiana | 5,070 BBLs | 0 MCF | Nov 2020 - Dec 2023 |
| Lambda Energy Resources LLC | Michigan | 40,876 BBLs | 424,774 MCF | Nov 2016 - Jun 2024 |
| Land And Natural Resource Development, Inc. | Alabama | 3,771 BBLs | 48,874 MCF | Jul 1977 - May 2024 |
| Landmark Resources, Inc. | Kansas | 16,337 BBLs | 4,814 MCF | Jan 1980 - May 2024 |
| Lario Oil & Gas Co | New Mexico | 16,326 BBLs | 8,420 MCF | Jan 1993 - Jun 2024 |
| Lario Oil & Gas Company | Kansas | 24,344 BBLs | 25,779 MCF | Jan 1980 - May 2024 |
| Lawco Holdings, LLC | Kansas | 2,330 BBLs | 0 MCF | Aug 2014 - May 2024 |
| Laymon Oil II, LLC | Kansas | 8,455 BBLs | 0 MCF | Jan 1980 - May 2024 |
| LB Exploration, Inc. | Kansas | 1,784 BBLs | 23,482 MCF | Jan 1980 - May 2024 |
| Lebsack Oil Production Inc. | Kansas | 6,403 BBLs | 1,675 MCF | Jan 1980 - May 2024 |
| Legacy Reserves Operating LP | North Dakota | 8,390 BBLs | 3,622 MCF | Oct 2006 - Jul 2024 |
| Lewis Operating Company | Louisiana | 1,709 BBLs | 150 MCF | Oct 1988 - Dec 2023 |
| LH Operating, LLC | New Mexico | 28,133 BBLs | 22,413 MCF | Nov 2019 - Jun 2024 |
| Liberty Operating Company, LLC | Mississippi | 2,594 BBLs | 0 MCF | Dec 1976 - Jul 2024 |
| Liberty Resources Management Company, LLC | North Dakota | 307,504 BBLs | 823,170 MCF | Jun 2014 - Jul 2024 |
| Lime Rock Resources III-A, L.P. | North Dakota | 346,055 BBLs | 398,684 MCF | Mar 2015 - Jul 2024 |
| Lime Rock Resources V-A, LP | North Dakota | 84,759 BBLs | 792,984 MCF | Jul 2022 - Jul 2024 |
| Little Chief Energy Corporation | Kansas | 1,945 BBLs | 0 MCF | Jan 2010 - May 2024 |
| Locin Oil Corporation | Colorado | 768 BBLs | 59,490 MCF | Jun 2000 - Jun 2024 |
| Loeb LLC* Herman L | Colorado | 1,558 BBLs | 6,241 MCF | Jan 1999 - Jul 2024 |
| Loewen Operator, Inc. | Kansas | 1,457 BBLs | 0 MCF | Jan 1980 - May 2024 |
| Logos Operating LLC | Colorado | 0 BBLs | 265,766 MCF | Jul 2017 - Jun 2024 |
| Logos Operating, LLC | New Mexico | 18,693 BBLs | 4,743,220 MCF | Jul 2012 - Jun 2024 |
| Loil Oil LLC | Wyoming | 6,592 BBLs | 10,997 MCF | Nov 2016 - Jul 2024 |
| Lonestar Oil Co | Kansas | 1,766 BBLs | 0 MCF | Jan 1980 - May 2024 |
| Longfellow Energy, LP | New Mexico | 151,643 BBLs | 335,738 MCF | Jul 2017 - Jun 2024 |
| Longs Peak Resources LLC | Colorado | 3,591 BBLs | 2,614 MCF | Feb 2016 - Jun 2024 |
| Longs Peak Resources LLC | Wyoming | 16,314 BBLs | 22,443 MCF | Feb 2016 - Jun 2024 |
| Louisiana Jordan Oil Company, Inc. | Louisiana | 1,248 BBLs | 8,826 MCF | Jan 2013 - Dec 2023 |