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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Kerr-McGee Oil & Gas Onshore LP | Wyoming | 2,408 BBLs | 10,281 MCF | Mar 1994 - Jan 2026 |
| Key Operating Company | Louisiana | 16,584 BBLs | 14,806 MCF | Jan 1995 - Jan 2025 |
| KGH Operating Company | Colorado | 337 BBLs | 34,145 MCF | Jan 1999 - Dec 2025 |
| Kinder Morgan Co2 Co LP | Colorado | 135 BBLs | 24,532,977 MCF | Jan 1999 - Dec 2025 |
| Kirby Oil Company | Louisiana | 4,097 BBLs | 0 MCF | Jan 1981 - Dec 2024 |
| Knighton Oil Company, Inc. | Kansas | 6,943 BBLs | 1,409 MCF | Jan 1980 - Sep 2025 |
| Koda Resources Operating, LLC | North Dakota | 272,392 BBLs | 370,986 MCF | Sep 2019 - Jan 2026 |
| Koda Uinta, LLC | Utah | 122,297 BBLs | 8,632,899 MCF | Nov 2025 - Jan 2026 |
| Koron Investments, Inc. | Kansas | 1,147 BBLs | 0 MCF | Jan 1980 - Sep 2025 |
| Kraken Operating, LLC | Montana | 849,078 BBLs | 1,365,535 MCF | Sep 2013 - Dec 2025 |
| Kraken Operating, LLC | North Dakota | 1,103,529 BBLs | 2,416,143 MCF | Sep 2016 - Jan 2026 |
| Krier, Kirby Oil, Inc. | Kansas | 2,571 BBLs | 0 MCF | Jan 1980 - Sep 2025 |
| L. D. Drilling, Inc. | Kansas | 3,627 BBLs | 7 MCF | Jan 1980 - Sep 2025 |
| La Delta Farms Oil Company LLC | Louisiana | 1,377 BBLs | 2,299 MCF | Mar 2016 - Dec 2024 |
| Lachenmayr Oil LLC | Kansas | 2,864 BBLs | 1,223 MCF | Jan 1980 - Sep 2025 |
| Lafayette Oilfield Contractors, Inc. | Louisiana | 8,311 BBLs | 0 MCF | Nov 2020 - Dec 2024 |
| Lambda Energy Resources LLC | Michigan | 39,083 BBLs | 407,869 MCF | Nov 2016 - Dec 2025 |
| Land And Natural Resource Development, Inc. | Alabama | 1,753 BBLs | 38,034 MCF | Jul 1977 - Dec 2025 |
| Landmark Resources, Inc. | Kansas | 12,046 BBLs | 3,832 MCF | Jan 1980 - Sep 2025 |
| Lario Oil & Gas Co | New Mexico | 14,511 BBLs | 11,613 MCF | Jan 1993 - Dec 2025 |
| Lario Oil & Gas Company | Kansas | 19,852 BBLs | 20,385 MCF | Jan 1980 - Sep 2025 |
| Layline Oil And Gas LLC | Michigan | 7,763 BBLs | 6,128 MCF | Jan 2017 - Dec 2025 |
| Laymon Oil II, LLC | Kansas | 8,673 BBLs | 0 MCF | Jan 1980 - Sep 2025 |
| LB Exploration, Inc. | Kansas | 1,280 BBLs | 12,516 MCF | Jan 1980 - Sep 2025 |
| Lease Management Inc | Michigan | 4,865 BBLs | 0 MCF | Jan 1982 - Jan 2026 |
| Lebsack Oil Production Inc. | Kansas | 5,094 BBLs | 1,022 MCF | Jan 1980 - Sep 2025 |
| Legacy Reserves Operating LP | North Dakota | 1,955 BBLs | 1,405 MCF | Oct 2006 - Jan 2026 |
| Lewis Operating Company | Louisiana | 1,466 BBLs | 120 MCF | Oct 1988 - Dec 2024 |
| LH Operating, LLC | New Mexico | 28,109 BBLs | 17,423 MCF | Nov 2019 - Jan 2026 |
| Liberty Resources Management Company, LLC | North Dakota | 2,483 BBLs | 1,241 MCF | Jun 2014 - Jan 2026 |
| Lime Rock Resources III-A, L.P. | North Dakota | 241,226 BBLs | 330,695 MCF | Mar 2015 - Jan 2026 |
| Lime Rock Resources V-A, L.P. | North Dakota | 48,685 BBLs | 533,740 MCF | Jul 2022 - Jan 2026 |
| Little Chief Energy Corporation | Kansas | 2,259 BBLs | 0 MCF | Jan 2010 - Sep 2025 |
| Lobo Operating, Inc. | Louisiana | 2,430 BBLs | 1,308 MCF | Mar 1995 - Dec 2024 |
| Lobo Production, Inc | Kansas | 0 BBLs | 29,226 MCF | Jan 1980 - Sep 2025 |
| Loeb LLC* Herman L | Colorado | 1,260 BBLs | 0 MCF | Jan 1999 - Jan 2026 |
| Logos Operating LLC | Colorado | 2 BBLs | 576,394 MCF | Jan 1999 - Dec 2025 |
| Logos Operating, LLC | New Mexico | 17,432 BBLs | 11,666,970 MCF | Jul 2012 - Jan 2026 |
| Loil Oil LLC | Wyoming | 4,499 BBLs | 10,182 MCF | Nov 2016 - Jan 2026 |
| Lonestar Oil Co | Kansas | 1,905 BBLs | 0 MCF | Jan 1980 - Sep 2025 |
| Longfellow Energy, LP | New Mexico | 200,371 BBLs | 655,876 MCF | Jul 2017 - Jan 2026 |
| Longs Peak Resources LLC | Wyoming | 20,443 BBLs | 25,480 MCF | Feb 2016 - Jan 2026 |
| Louisiana Jordan Oil Company, Inc. | Louisiana | 1,207 BBLs | 0 MCF | Jan 2013 - Dec 2024 |
| Luff Exploration Company | North Dakota | 8,757 BBLs | 6,343 MCF | Dec 1996 - Jan 2026 |
| Lynx Operating Co., Inc. | New Mexico | 2,857 BBLs | 3,324 MCF | Jan 1999 - Jan 2026 |
| M & G DRLG Co Inc | New Mexico | 137 BBLs | 58,175 MCF | May 1995 - Jan 2026 |
| M & K Oil Company LLC | Wyoming | 23,632 BBLs | 76,320 MCF | Jan 1978 - Jan 2026 |
| M & M Exploration, Inc. | Kansas | 630 BBLs | 18,165 MCF | Mar 2002 - Sep 2025 |
| M & M Oil Company, L.L.C. | Louisiana | 2,996 BBLs | 0 MCF | Aug 1994 - Jan 2025 |
| M G Oil Inc | Kansas | 7,083 BBLs | 0 MCF | Jan 1980 - Sep 2025 |