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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Kennedy Oil | Wyoming | 1,582 BBLs | 13,900 MCF | Apr 1984 - Apr 2025 |
| Kentex Worland LLC | Wyoming | 2,963 BBLs | 126,627 MCF | Apr 2019 - May 2025 |
| Kerr-McGee Oil & Gas Onshore LP | Wyoming | 2,436 BBLs | 10,042 MCF | Mar 1994 - Apr 2025 |
| Key Operating Company | Louisiana | 16,584 BBLs | 14,806 MCF | Jan 1995 - Jan 2025 |
| Kinder Morgan Co2 Co LP | Colorado | 318 BBLs | 22,086,509 MCF | Apr 2000 - Apr 2025 |
| Kirby Oil Company | Louisiana | 4,097 BBLs | 0 MCF | Jan 1981 - Dec 2024 |
| Knighton Oil Company, Inc. | Kansas | 6,254 BBLs | 1,339 MCF | Jan 1980 - Feb 2025 |
| Koda Resources Operating, LLC | North Dakota | 343,578 BBLs | 278,874 MCF | Sep 2019 - Apr 2025 |
| Koron Investments, Inc. | Kansas | 1,333 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| Kraft Oil Company LLC | Kansas | 1,154 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| Kraken Operating, LLC | Montana | 937,939 BBLs | 1,307,567 MCF | Sep 2013 - Apr 2025 |
| Kraken Operating, LLC | North Dakota | 856,268 BBLs | 2,047,879 MCF | Sep 2016 - Apr 2025 |
| L. D. Drilling, Inc. | Kansas | 10,905 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| La Delta Farms Oil Company LLC | Louisiana | 1,377 BBLs | 2,299 MCF | Mar 2016 - Dec 2024 |
| Lachenmayr Oil LLC | Kansas | 2,872 BBLs | 1,159 MCF | Jan 1980 - Feb 2025 |
| Lafayette Oilfield Contractors, Inc. | Louisiana | 8,311 BBLs | 0 MCF | Nov 2020 - Dec 2024 |
| Lambda Energy Resources LLC | Michigan | 41,899 BBLs | 396,289 MCF | May 2014 - Apr 2025 |
| Land And Natural Resource Development, Inc. | Alabama | 3,627 BBLs | 42,212 MCF | Jul 1977 - Mar 2025 |
| Landmark Resources, Inc. | Kansas | 14,579 BBLs | 5,809 MCF | Jan 1980 - Feb 2025 |
| Langley, Jerry Oil Company LLC | Arkansas | 1,065 BBLs | 0 MCF | Jan 2001 - Jan 2025 |
| Lario Oil & Gas Co | New Mexico | 31,097 BBLs | 15,192 MCF | Jan 1993 - Apr 2025 |
| Lario Oil & Gas Company | Kansas | 21,730 BBLs | 16,662 MCF | Jan 1980 - Feb 2025 |
| Laymon Oil II, LLC | Kansas | 8,541 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| LB Exploration, Inc. | Kansas | 1,453 BBLs | 15,774 MCF | Jan 1980 - Feb 2025 |
| Lebsack Oil Production Inc. | Kansas | 5,260 BBLs | 985 MCF | Jan 1980 - Feb 2025 |
| Legacy Reserves Operating LP | Montana | 1,522 BBLs | 18 MCF | Jun 2012 - Apr 2025 |
| Legacy Reserves Operating LP | North Dakota | 8,245 BBLs | 5,432 MCF | Oct 2006 - Apr 2025 |
| Lewis Operating Company | Louisiana | 1,466 BBLs | 120 MCF | Oct 1988 - Dec 2024 |
| LH Operating, LLC | New Mexico | 25,841 BBLs | 20,981 MCF | Nov 2019 - Apr 2025 |
| Liberty Resources Management Company, LLC | North Dakota | 2,186 BBLs | 1,093 MCF | Jun 2014 - Apr 2025 |
| Lime Rock Resources III-A, L.P. | North Dakota | 268,737 BBLs | 356,576 MCF | Mar 2015 - Apr 2025 |
| Lime Rock Resources V-A, LP | North Dakota | 84,785 BBLs | 699,719 MCF | Jul 2022 - Apr 2025 |
| Little Chief Energy Corporation | Kansas | 1,720 BBLs | 0 MCF | Jan 2010 - Feb 2025 |
| Lobo Operating, Inc. | Louisiana | 2,430 BBLs | 1,308 MCF | Mar 1995 - Dec 2024 |
| Lobo Production, Inc | Kansas | 0 BBLs | 28,345 MCF | Jan 1980 - Feb 2025 |
| Locin Oil Corporation | Colorado | 3 BBLs | 60,986 MCF | Jun 2000 - Apr 2025 |
| Loeb LLC* Herman L | Colorado | 1,339 BBLs | 0 MCF | Jan 1999 - May 2025 |
| Logos Operating LLC | Colorado | 1 BBLs | 283,666 MCF | Jul 2017 - Apr 2025 |
| Logos Operating, LLC | New Mexico | 18,475 BBLs | 8,080,293 MCF | Jul 2012 - Apr 2025 |
| Loil Oil LLC | Wyoming | 4,494 BBLs | 9,463 MCF | Nov 2016 - Apr 2025 |
| Lone Wolf Oil & Gas Co., LLC | Kansas | 1,594 BBLs | 0 MCF | Jan 2010 - Feb 2025 |
| Lonestar Oil Co | Kansas | 2,052 BBLs | 0 MCF | Jan 1980 - Feb 2025 |
| Longfellow Energy, LP | New Mexico | 222,735 BBLs | 513,069 MCF | Jul 2017 - Apr 2025 |
| Longs Peak Resources LLC | Wyoming | 12,943 BBLs | 15,151 MCF | Feb 2016 - Apr 2025 |
| Longview Production Company | Arkansas | 477 BBLs | 26,753 MCF | Jan 2001 - Jan 2025 |
| Louisiana Jordan Oil Company, Inc. | Louisiana | 1,207 BBLs | 0 MCF | Jan 2013 - Dec 2024 |
| Luff Exploration Company | North Dakota | 9,413 BBLs | 6,430 MCF | Dec 1996 - Apr 2025 |
| Lynx Operating Co., Inc. | New Mexico | 1,648 BBLs | 2,129 MCF | Jan 1999 - Apr 2025 |
| M & G DRLG Co Inc | New Mexico | 0 BBLs | 54,665 MCF | May 1995 - Apr 2025 |
| M & K Oil Company LLC | Wyoming | 23,998 BBLs | 83,097 MCF | Jan 1978 - Apr 2025 |