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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Kaiser-Francis Oil Co | New Mexico | 1,303,016 BBLs | 5,736,131 MCF | Jan 1993 - Feb 2024 |
| Kaiser-Francis Oil Company | North Dakota | 17,484 BBLs | 26,465 MCF | Jul 2002 - Feb 2024 |
| Kansas Energy Company, L.L.C. | Kansas | 2,243 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| Kansas Natural Gas Operating, LC | Kansas | 0 BBLs | 114,426 MCF | Jan 2010 - Dec 2023 |
| Kantor Oil Company, LLC | Kansas | 2,875 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| Kelly Bayou Production | Louisiana | 1,629 BBLs | 0 MCF | Sep 1999 - Jan 2024 |
| Kennedy Oil | Wyoming | 1,182 BBLs | 13,048 MCF | Apr 1984 - Feb 2024 |
| Kentex Worland LLC | Wyoming | 4,461 BBLs | 139,712 MCF | Apr 2019 - Feb 2024 |
| Kerr McGee Oil & Gas Onshore LP | Colorado | 2,241,362 BBLs | 20,026,550 MCF | Jan 1999 - Feb 2024 |
| Kerr-McGee Oil & Gas Onshore LP | Wyoming | 1,911 BBLs | 10,011 MCF | Mar 1994 - Feb 2024 |
| Key Operating Company | Louisiana | 29,746 BBLs | 58,989 MCF | Jan 1995 - Jan 2024 |
| KFG Petroleum Corporation | Mississippi | 1,318 BBLs | 0 MCF | Dec 1976 - Feb 2024 |
| Kinder Morgan Co2 Co LP | Colorado | 225 BBLs | 23,305,131 MCF | Apr 2000 - Feb 2024 |
| Knighton Oil Company, Inc. | Kansas | 6,269 BBLs | 1,898 MCF | Jan 1980 - Dec 2023 |
| Koda Resources Operating, LLC | North Dakota | 77,866 BBLs | 77,459 MCF | Sep 2019 - Feb 2024 |
| Koehn, Radell W. And Austin Koehn & Morgan Koehn | Kansas | 1,225 BBLs | 0 MCF | Jan 2010 - Dec 2023 |
| Kraken Operating, LLC | North Dakota | 783,857 BBLs | 1,459,747 MCF | Sep 2016 - Feb 2024 |
| Krier, Kirby Oil, Inc. | Kansas | 1,784 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| L. D. Drilling, Inc. | Kansas | 15,538 BBLs | 489 MCF | Jan 1980 - Dec 2023 |
| La Veta Oil & Gas, LLC | Kansas | 1,454 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| Lachenmayr Oil LLC | Kansas | 4,658 BBLs | 1,868 MCF | Jan 1980 - Dec 2023 |
| Lafayette Oilfield Contractors, Inc. | Louisiana | 5,070 BBLs | 0 MCF | Nov 2020 - Dec 2023 |
| Lambda Energy Resources LLC | Michigan | 42,612 BBLs | 427,107 MCF | Dec 2016 - Dec 2023 |
| Land And Natural Resource Development, Inc. | Alabama | 4,510 BBLs | 53,341 MCF | Jul 1977 - Nov 2023 |
| Landmark Resources, Inc. | Kansas | 15,559 BBLs | 5,057 MCF | Jan 1980 - Dec 2023 |
| Lario Oil & Gas Company | Kansas | 23,025 BBLs | 28,840 MCF | Jan 1980 - Dec 2023 |
| Lawco Holdings, LLC | Kansas | 2,161 BBLs | 0 MCF | Aug 2014 - Dec 2023 |
| Layline Oil And Gas LLC | Michigan | 9,567 BBLs | 9,732 MCF | Jan 2017 - Jan 2024 |
| Laymon Oil II, LLC | Kansas | 9,225 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| LB Exploration, Inc. | Kansas | 2,456 BBLs | 22,005 MCF | Jan 1980 - Dec 2023 |
| Lboc, LLC | Arkansas | 1,397 BBLs | 0 MCF | Jan 2001 - Feb 2024 |
| Lebsack Oil Production Inc. | Kansas | 7,042 BBLs | 1,732 MCF | Jan 1980 - Dec 2023 |
| Legacy Reserves Operating LP | North Dakota | 6,459 BBLs | 4,881 MCF | Oct 2006 - Feb 2024 |
| Legacy Reserves Operating, LP | New Mexico | 60,407 BBLs | 235,583 MCF | May 2006 - Jan 2024 |
| Lewis Operating Company | Louisiana | 1,709 BBLs | 150 MCF | Oct 1988 - Dec 2023 |
| LH Operating, LLC | New Mexico | 29,799 BBLs | 25,045 MCF | Nov 2019 - Jan 2024 |
| Liberty Resources Management Company, LLC | North Dakota | 262,916 BBLs | 469,736 MCF | Jun 2014 - Feb 2024 |
| Lime Rock Resources III-A, L.P. | North Dakota | 430,437 BBLs | 377,823 MCF | Mar 2015 - Feb 2024 |
| Lime Rock Resources V-A, LP | North Dakota | 155,863 BBLs | 866,961 MCF | Jul 2022 - Feb 2024 |
| Little Chief Energy Corporation | Kansas | 1,659 BBLs | 0 MCF | Jan 2010 - Dec 2023 |
| Loeb LLC* Herman L | Colorado | 1,510 BBLs | 7,882 MCF | Jan 1999 - Mar 2024 |
| Logos Operating LLC | Colorado | 0 BBLs | 256,550 MCF | Jul 2017 - Feb 2024 |
| Logos Operating, LLC | New Mexico | 20,585 BBLs | 7,041,582 MCF | Jul 2012 - Feb 2024 |
| Loil Oil LLC | Wyoming | 5,636 BBLs | 12,384 MCF | Nov 2016 - Feb 2024 |
| Lone Wolf Oil & Gas Co., LLC | Kansas | 1,454 BBLs | 0 MCF | Jan 2010 - Dec 2023 |
| Lonestar Oil Co | Kansas | 1,436 BBLs | 0 MCF | Jan 1980 - Dec 2023 |
| Lonewolf Operating, LLC | Montana | 1,325 BBLs | 9,547 MCF | Aug 2018 - Feb 2024 |
| Longfellow Energy, LP | New Mexico | 121,559 BBLs | 251,545 MCF | Jul 2017 - Jan 2024 |
| Longs Peak Resources LLC | Wyoming | 16,975 BBLs | 22,444 MCF | Feb 2016 - Jan 2024 |
| Louisiana Jordan Oil Company, Inc. | Louisiana | 1,248 BBLs | 8,826 MCF | Jan 2013 - Dec 2023 |