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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Kelly Bayou Production | Louisiana | 2,038 BBLs | 0 MCF | Sep 1999 - Jan 2025 |
| Kennedy Oil | Wyoming | 2,750 BBLs | 17,610 MCF | Apr 1984 - Sep 2025 |
| Kentex Worland LLC | Wyoming | 2,263 BBLs | 128,934 MCF | Apr 2019 - Oct 2025 |
| Kerr McGee Oil & Gas Onshore LP | Colorado | 2,481,184 BBLs | 24,477,674 MCF | Jan 1999 - Sep 2025 |
| Kerr-McGee Oil & Gas Onshore LP | Wyoming | 1,289 BBLs | 3,588 MCF | Mar 1994 - Oct 2025 |
| Key Operating Company | Louisiana | 16,584 BBLs | 14,806 MCF | Jan 1995 - Jan 2025 |
| KGH Operating Company | Colorado | 1,142 BBLs | 37,332 MCF | Jan 1999 - Sep 2025 |
| Kinder Morgan Co2 Co LP | Colorado | 268 BBLs | 20,037,608 MCF | Jan 1999 - Oct 2025 |
| Kirby Oil Company | Louisiana | 4,097 BBLs | 0 MCF | Jan 1981 - Dec 2024 |
| Knighton Oil Company, Inc. | Kansas | 5,537 BBLs | 1,368 MCF | Jan 1980 - Jun 2025 |
| Koehn, Radell W. And Austin Koehn & Morgan Koehn | Kansas | 1,395 BBLs | 0 MCF | Jan 2010 - Jun 2025 |
| Koron Investments, Inc. | Kansas | 1,660 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Kraft Oil Company LLC | Kansas | 1,354 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Kraken Operating, LLC | Montana | 867,560 BBLs | 1,336,068 MCF | Sep 2013 - Sep 2025 |
| Kraken Operating, LLC | North Dakota | 1,108,037 BBLs | 2,481,080 MCF | Sep 2016 - Oct 2025 |
| Krier, Kirby Oil, Inc. | Kansas | 2,591 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| L. D. Drilling, Inc. | Kansas | 4,720 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| La Delta Farms Oil Company LLC | Louisiana | 1,377 BBLs | 2,299 MCF | Mar 2016 - Dec 2024 |
| Lachenmayr Oil LLC | Kansas | 2,823 BBLs | 1,266 MCF | Jan 1980 - Jun 2025 |
| Lafayette Oilfield Contractors, Inc. | Louisiana | 8,311 BBLs | 0 MCF | Nov 2020 - Dec 2024 |
| Lambda Energy Resources LLC | Michigan | 40,148 BBLs | 406,064 MCF | May 2014 - Oct 2025 |
| Land And Natural Resource Development, Inc. | Alabama | 2,270 BBLs | 38,782 MCF | Jul 1977 - Sep 2025 |
| Landmark Resources, Inc. | Kansas | 13,601 BBLs | 4,659 MCF | Jan 1980 - Jun 2025 |
| Lario Oil & Gas Co | New Mexico | 11,714 BBLs | 6,768 MCF | Jan 1993 - Sep 2025 |
| Lario Oil & Gas Company | Kansas | 21,894 BBLs | 22,695 MCF | Jan 1980 - Jun 2025 |
| Lawco Holdings, LLC | Kansas | 1,713 BBLs | 0 MCF | Aug 2014 - Jun 2025 |
| Layline Oil And Gas LLC | Michigan | 8,013 BBLs | 4,893 MCF | Jan 2017 - Sep 2025 |
| Laymon Oil II, LLC | Kansas | 8,156 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| LB Exploration, Inc. | Kansas | 1,447 BBLs | 15,077 MCF | Jan 1980 - Jun 2025 |
| Lebsack Oil Production Inc. | Kansas | 5,619 BBLs | 1,034 MCF | Jan 1980 - Jun 2025 |
| Legacy Reserves Operating LP | North Dakota | 2,339 BBLs | 1,311 MCF | Oct 2006 - Oct 2025 |
| Lewis Operating Company | Louisiana | 1,466 BBLs | 120 MCF | Oct 1988 - Dec 2024 |
| LH Operating, LLC | New Mexico | 25,889 BBLs | 21,804 MCF | Nov 2019 - Oct 2025 |
| Liberty Resources Management Company, LLC | North Dakota | 2,555 BBLs | 1,277 MCF | Jun 2014 - Oct 2025 |
| Lime Rock Resources III-A, L.P. | North Dakota | 246,713 BBLs | 358,901 MCF | Mar 2015 - Oct 2025 |
| Lime Rock Resources V-A, L.P. | North Dakota | 62,176 BBLs | 646,589 MCF | Jul 2022 - Oct 2025 |
| Little Chief Energy Corporation | Kansas | 1,257 BBLs | 0 MCF | Jan 2010 - Jun 2025 |
| Lobo Operating, Inc. | Louisiana | 2,430 BBLs | 1,308 MCF | Mar 1995 - Dec 2024 |
| Lobo Production, Inc | Kansas | 0 BBLs | 26,460 MCF | Jan 1980 - Jun 2025 |
| Loeb LLC* Herman L | Colorado | 1,250 BBLs | 0 MCF | Jan 1999 - Oct 2025 |
| Logos Operating LLC | Colorado | 1 BBLs | 790,520 MCF | Jan 1999 - Sep 2025 |
| Logos Operating, LLC | New Mexico | 17,270 BBLs | 7,700,007 MCF | Jul 2012 - Sep 2025 |
| Loil Oil LLC | Wyoming | 4,948 BBLs | 10,753 MCF | Nov 2016 - Oct 2025 |
| Lonestar Oil Co | Kansas | 1,546 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Longfellow Energy, LP | New Mexico | 229,335 BBLs | 634,153 MCF | Jul 2017 - Sep 2025 |
| Longs Peak Resources LLC | Wyoming | 11,765 BBLs | 9,960 MCF | Feb 2016 - Oct 2025 |
| Luff Exploration Company | North Dakota | 9,388 BBLs | 7,213 MCF | Dec 1996 - Oct 2025 |
| Lynx Operating Co., Inc. | New Mexico | 2,793 BBLs | 2,931 MCF | Jan 1999 - Oct 2025 |
| M & G DRLG Co Inc | New Mexico | 0 BBLs | 57,976 MCF | May 1995 - Sep 2025 |
| M & K Oil Company LLC | Wyoming | 24,656 BBLs | 75,133 MCF | Jan 1978 - Oct 2025 |