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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| H & R Well Services Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1991 - Apr 2015 |
| H C M Energy LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2001 - Jul 2003 |
| H D Oil Company | Wyoming | 142 BBLs | 0 MCF | Aug 1980 - Feb 2024 |
| H G H Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1990 |
| H L Marquip Resources Inc | Wyoming | 0 BBLs | 0 MCF | Mar 1991 - Dec 1993 |
| Habersham Energy Company | Wyoming | 0 BBLs | 0 MCF | Feb 1990 - Apr 1993 |
| Hackathorn H A | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 1978 |
| Hadley/Jackson Energy LLC | Wyoming | 1,357 BBLs | 0 MCF | Nov 2019 - Jan 2024 |
| Hadson Petroleum Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1979 - Dec 1980 |
| Hahn Nick R | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 1986 |
| Hale Vernon | Wyoming | 0 BBLs | 0 MCF | May 1988 - Sep 1991 |
| Hallador Petroleum LLP | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 1999 |
| Hallwood Petroleum | Wyoming | 0 BBLs | 0 MCF | Apr 1995 - Dec 1997 |
| Hamon Jake L | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Mar 1984 |
| Handran Production Service Inc | Wyoming | 0 BBLs | 0 MCF | Apr 2020 - Feb 2024 |
| Hanson Operating Company Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 2021 |
| Harbinger Oil | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1980 |
| Harken Oil & Gas Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Jun 1983 |
| Harmac Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Jan 1984 |
| Harnett Richard A | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 1980 |
| Harpel John P Jr | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 1998 |
| Harper Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1984 - Sep 1992 |
| Harrell Oil Company LLC | Wyoming | 0 BBLs | 0 MCF | Jun 1985 - Mar 2023 |
| Harshman Michael D | Wyoming | 0 BBLs | 0 MCF | Aug 2006 - Jun 2012 |
| Harvey E Yates Company | Wyoming | 0 BBLs | 0 MCF | Jul 1990 - Mar 1993 |
| Haug Lawrence | Wyoming | 0 BBLs | 0 MCF | Jan 1990 - Jul 2007 |
| Havoco Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 2005 |
| Hawks Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 2007 |
| Hawks Industries Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 1993 |
| Hawthorn Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1986 - May 1999 |
| Hay Leonard | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Sep 1994 |
| Headington Oil Company LP | Wyoming | 0 BBLs | 0 MCF | Apr 1990 - Jun 2005 |
| Heartland Energy Company | Wyoming | 0 BBLs | 0 MCF | Jan 2001 - Jun 2012 |
| Hedges Dallas | Wyoming | 0 BBLs | 0 MCF | Jan 1981 - Nov 2003 |
| Hedges Spencer | Wyoming | 128 BBLs | 0 MCF | Jan 1978 - Mar 2024 |
| Helena Resources Inc | Wyoming | 10 BBLs | 12,693 MCF | Nov 2010 - Jan 2024 |
| Helis Oil & Gas Company LLC Estate | Wyoming | 0 BBLs | 0 MCF | Nov 2003 - Jul 2022 |
| Henderson Petroleum Corp | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Oct 2000 |
| Henry Ronald L & Wanda L | Wyoming | 0 BBLs | 0 MCF | Jan 1991 - May 1999 |
| Herbaly Petroleum Corp | Wyoming | 0 BBLs | 0 MCF | Apr 1983 - Feb 2002 |
| Hershey Oil Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jul 1992 |
| Hewitt Operating Inc | Wyoming | 0 BBLs | 0 MCF | Dec 2012 - Nov 2017 |
| Hewitt R J | Wyoming | 0 BBLs | 0 MCF | Aug 1985 - Dec 1985 |
| Hi-Pro Production | Wyoming | 0 BBLs | 0 MCF | Jan 1996 - Nov 2003 |
| Hickman B J Oil Operating | Wyoming | 0 BBLs | 0 MCF | Oct 1981 - Jul 1983 |
| Hidgon Barbara Smith | Wyoming | 0 BBLs | 0 MCF | Feb 1987 - Nov 2000 |
| High Energy Inc | Wyoming | 0 BBLs | 0 MCF | Aug 2004 - Jul 2013 |
| High Plains Gas LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2006 - Aug 2014 |
| High Summit Oil & Gas Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Sep 1987 |
| Highland Exploration | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Sep 1979 |