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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Kugler* Dean & Joe Dba D-J Oil Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2021 |
| L & B Oil Company(Leslie & Betty Sessions) | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2009 |
| L & C Weyerman LLC | Colorado | 0 BBLs | 0 MCF | Jun 2006 - Sep 2018 |
| L B Exploration Inc | Colorado | 0 BBLs | 0 MCF | Jan 2015 - Jul 2025 |
| Lamar Oil & Gas Exploration | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2013 |
| Laramie Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2013 |
| Lasso Oil & Gas LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2022 |
| Legado DJ, LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2011 |
| Lewis & Clark Exploration Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2003 |
| Lilis Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2017 |
| Linn Bros Oil & Gas Inc. | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2012 |
| Locin Oil Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2025 |
| Loeb LLC* Herman L | Colorado | 1,202 BBLs | 0 MCF | Jan 1999 - Mar 2026 |
| Logos Operating LLC | Colorado | 2 BBLs | 513,435 MCF | Jan 1999 - Feb 2026 |
| Loloff Construction Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2016 |
| Lone Mountain Production Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2016 |
| Longs Peak Resources LLC | Colorado | 0 BBLs | 0 MCF | Dec 2010 - Mar 2026 |
| Lorentz Oil & Gas LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2019 |
| Lundvall Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2023 |
| Lyco Energy Corporation | Colorado | 0 BBLs | 0 MCF | Apr 2000 - Nov 2002 |
| M E III Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2022 |
| Machii-Ross Petroleum Co | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2014 |
| Magpie Operating, Inc | Colorado | 14,909 BBLs | 110,579 MCF | Jan 1999 - Feb 2026 |
| Mallon Oil Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2005 |
| Maralex Resources, Inc | Colorado | 0 BBLs | 145,119 MCF | Jan 1999 - Feb 2026 |
| Markus Production, Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2021 |
| Markwest Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2003 |
| Marty Brothers | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2006 |
| Mastorakos* D A | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2019 |
| Matrix Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2013 |
| Matrix Oil Corporation | Colorado | 0 BBLs | 0 MCF | May 2012 - Jan 2021 |
| Matrix Production Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2024 |
| Mayer* Dorothy M | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2004 |
| McCartney Engineering LLC | Colorado | 589 BBLs | 809 MCF | Jan 1999 - Feb 2026 |
| McClane Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2017 |
| McCoy Petroleum Corporation | Colorado | 231 BBLs | 0 MCF | Nov 2019 - Feb 2026 |
| McElvain Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2019 |
| McKenzie Junction Ma LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2006 |
| McLane Trust* Dixie | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2025 |
| McWhinney Holding Company LLLP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2021 |
| MDS Energy Development LLC | Colorado | 8,811 BBLs | 12,326 MCF | Nov 2022 - Feb 2026 |
| Mendell Finisterre II LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2017 |
| Merit Energy Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2016 |
| Merrion Oil & Gas Corp | Colorado | 0 BBLs | 11,491 MCF | Jan 1999 - Feb 2026 |
| Messer LLC | Colorado | 0 BBLs | 29,879 MCF | Jan 1999 - Mar 2026 |
| Mid-Con Energy Operating LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2016 |
| Monago Operating Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2007 |
| Monahan* Rex Family Trust | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2007 |
| Mont Rouge Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2020 |
| Monument Gas Marketing Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2025 |