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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Ironhorse Resources LLC | Colorado | 0 BBLs | 0 MCF | May 2014 - Nov 2018 |
| J & K Oil Company | Colorado | 0 BBLs | 0 MCF | Aug 2004 - Feb 2005 |
| J N Exploration And Production LMTD | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 1999 |
| J-W Operating Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2015 |
| Jackson* Donald W | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 1999 |
| Javernick Oil | Colorado | 621 BBLs | 0 MCF | Jan 1999 - Aug 2024 |
| Javernick* Julia K | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2010 |
| Jayare Exploration, Inc | Colorado | 0 BBLs | 0 MCF | Sep 1999 - Dec 1999 |
| Jeffers* Theadore | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2001 |
| Jelco G V Inc | Colorado | 0 BBLs | 0 MCF | May 2001 - Dec 2005 |
| Jenex Petroleum Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2005 |
| Jetta Operating Company Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2018 |
| JFH Oil & Gas LLC | Colorado | 0 BBLs | 0 MCF | Oct 2006 - Oct 2022 |
| Joeckel* Raymond N | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2000 |
| Jonah Energy Company LLC | Colorado | 0 BBLs | 0 MCF | Nov 2001 - Mar 2002 |
| Jones Energy LTD | Colorado | 0 BBLs | 0 MCF | Jan 2008 - Mar 2011 |
| Journey Operating, L.L.C. | Colorado | 0 BBLs | 0 MCF | Oct 2000 - May 2006 |
| Juniper Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2004 |
| JWC Operating LLC | Colorado | 0 BBLs | 0 MCF | Nov 2020 - Aug 2024 |
| K P Kauffman Company Inc | Colorado | 13,425 BBLs | 76,217 MCF | Jan 1999 - Aug 2024 |
| K W B Oil Property MGMT Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2000 |
| Kaiser-Francis Oil Company | Colorado | 0 BBLs | 5,153 MCF | Jan 1999 - Aug 2024 |
| KC Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2014 |
| KCS Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2006 |
| Keener Oil & Gas Company | Colorado | 0 BBLs | 0 MCF | Oct 2004 - May 2005 |
| Kennec Trustee* Frank | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2008 |
| Kerr McGee Oil & Gas Onshore LP | Colorado | 2,349,177 BBLs | 24,807,618 MCF | Jan 1999 - Sep 2024 |
| Kestrel Resources Inc | Colorado | 0 BBLs | 0 MCF | Apr 2000 - Jan 2017 |
| KGH Operating Company | Colorado | 647 BBLs | 34,218 MCF | Jun 2000 - Aug 2024 |
| Kicking Bird Exploration LTD | Colorado | 0 BBLs | 0 MCF | Jul 2007 - Dec 2009 |
| Kidron Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2006 |
| Kinder Morgan Co2 Co LP | Colorado | 251 BBLs | 22,813,756 MCF | Apr 2000 - Sep 2024 |
| Kissler* Daniel | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2010 |
| KKB Energy, LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2000 |
| Klabzuba Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 2006 - Apr 2012 |
| KLT Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2004 |
| Koch Exploration Company, LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2017 |
| Kodiak Petroleum Inc | Colorado | 0 BBLs | 0 MCF | Nov 2003 - Jun 2013 |
| Kriti Exploration Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2001 |
| KT Resources LLC | Colorado | 0 BBLs | 0 MCF | Feb 2022 - Sep 2024 |
| KTM Operating LLC | Colorado | 27 BBLs | 0 MCF | Aug 2018 - Aug 2024 |
| Kuenzler & Flora Reserve Company | Colorado | 363 BBLs | 0 MCF | Aug 2011 - Aug 2024 |
| Kugler* Dean & Joe Dba D-J Oil Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2019 |
| Kykon Oil & Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2009 |
| L & B Oil Company(Leslie & Betty Sessions) | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2009 |
| L B Exploration Inc | Colorado | 0 BBLs | 0 MCF | Oct 2015 - Jan 2022 |
| Lamar Oil & Gas Exploration | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2013 |
| Lance Oil & Gas Company Inc | Colorado | 0 BBLs | 0 MCF | Oct 2001 - Dec 2006 |
| Laramie Energy II, LLC | Colorado | 0 BBLs | 0 MCF | Sep 2007 - Sep 2015 |
| Laramie Energy LLC | Colorado | 0 BBLs | 0 MCF | Jun 2004 - Aug 2013 |