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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Wynn-Crosby Operating LTD | Wyoming | 0 BBLs | 0 MCF | Sep 2011 - Oct 2017 |
| Wyoil Corp | Wyoming | 1,193 BBLs | 0 MCF | Jan 1982 - Jan 2025 |
| Wyoming Mineral Exploration LLC | Wyoming | 0 BBLs | 0 MCF | May 2006 - Dec 2006 |
| Wyoming Minerals LTD | Wyoming | 0 BBLs | 0 MCF | Sep 2005 - Apr 2006 |
| Wyoming Oil & Minerals Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 2001 |
| Wyoming Resources Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 2018 |
| Wyoming Western Oil | Wyoming | 0 BBLs | 0 MCF | Jan 1991 - Sep 2019 |
| Wyoming-Dakota Corporation | Wyoming | 0 BBLs | 0 MCF | Feb 1986 - May 1992 |
| Wyop Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1993 - Sep 1995 |
| Xeric Oil & Gas Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1997 - Sep 2010 |
| Xog Operating LLC | Wyoming | 0 BBLs | 0 MCF | Sep 2005 - Jan 2008 |
| Xoil Inc | Wyoming | 0 BBLs | 0 MCF | Sep 1989 - Jul 2023 |
| XPR Wyoming LLC | Wyoming | 42 BBLs | 250 MCF | Aug 2023 - Feb 2025 |
| XTO Energy Inc | Wyoming | 706 BBLs | 314,792 MCF | Jan 1995 - Feb 2025 |
| Y U Oil Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Mar 1986 |
| Yates Drilling Company | Wyoming | 0 BBLs | 0 MCF | Apr 1990 - Sep 2010 |
| Yegen E C | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 2004 |
| Yockim Dennis W | Wyoming | 0 BBLs | 0 MCF | Jan 1988 - Dec 1991 |
| Young Marshall R Oil Co | Wyoming | 0 BBLs | 0 MCF | Aug 1981 - Dec 1997 |
| Z & S Construction Co Inc | Wyoming | 128 BBLs | 0 MCF | Jan 1978 - Mar 2025 |
| Zavanna Resources LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2020 - Jan 2025 |
| Zenergy Inc | Wyoming | 0 BBLs | 0 MCF | Jun 2004 - Sep 2009 |
| Zephyer Production Inc | Wyoming | 0 BBLs | 0 MCF | Jun 2003 - Nov 2007 |
| Zerbst James E | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Apr 2007 |
| Zoe Oil | Wyoming | 0 BBLs | 0 MCF | May 1983 - Dec 1985 |