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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| W.D. Short Oil Co., LLC | Kansas | 2,267 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Wagner Oil Company | Louisiana | 3,581 BBLs | 248 MCF | Jan 1999 - Dec 2024 |
| Wapiti Petroleum, LLC | Kansas | 939 BBLs | 1,767 MCF | Jan 2020 - Jun 2026 |
| Warhorse Petroleum Inc | Kansas | 3,055 BBLs | 0 MCF | Jan 2010 - Jun 2026 |
| Warren American Oil Co | New Mexico | 1,029 BBLs | 416 MCF | Sep 2000 - Aug 2026 |
| Warrior Met Coal Gas, LLC | Alabama | 0 BBLs | 372,163 MCF | Sep 1984 - Jul 2026 |
| Wave Petroleum Operating LLC | Wyoming | 14,544 BBLs | 4,969 MCF | Dec 2014 - Aug 2026 |
| Webco Oil Company, Inc. | Kansas | 1,175 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| Weigel Oil Company, LLC | Kansas | 1,581 BBLs | 0 MCF | Feb 1980 - Jun 2026 |
| Wem Operating, LLC | Utah | 153,701 BBLs | 523,349 MCF | Dec 2023 - Jul 2026 |
| Wesco Operating Inc | Wyoming | 27,161 BBLs | 19,992 MCF | Jan 1991 - Aug 2026 |
| Wesco Operating, Inc | Utah | 6,284 BBLs | 41,827 MCF | Mar 2016 - Jul 2026 |
| Wesco Operating, Inc. | Montana | 4,866 BBLs | 2,453 MCF | Jun 1999 - Jul 2026 |
| Wesco Operating, Inc. | North Dakota | 6,993 BBLs | 6,350 MCF | Aug 1987 - Jul 2026 |
| Wexpro Company | Colorado | 1,465 BBLs | 264,189 MCF | Jan 1999 - Jul 2026 |
| Wexpro Company | Utah | 4,232 BBLs | 195,163 MCF | Jan 1971 - Jul 2026 |
| Wexpro Company | Wyoming | 7,846 BBLs | 2,755,168 MCF | Jan 1978 - Jul 2026 |
| Wexpro II Company | Wyoming | 806 BBLs | 393,352 MCF | Mar 2017 - Jul 2026 |
| Wgo Resources, LLC | North Dakota | 9,260 BBLs | 5,208 MCF | Jan 2025 - Jul 2026 |
| Whisler Enterprise Company | Wyoming | 1,789 BBLs | 0 MCF | May 2021 - Aug 2026 |
| Whitco Petroleum, LP | Kansas | 1,095 BBLs | 611 MCF | Nov 1992 - Jun 2026 |
| White & Ellis Drilling, Inc. | Kansas | 1,681 BBLs | 1,551 MCF | Jan 1980 - Jun 2026 |
| White Butte Oil Operations, LLC | North Dakota | 10,515 BBLs | 66,436 MCF | Apr 2015 - Jul 2026 |
| White Exploration, Inc. | Kansas | 961 BBLs | 12,323 MCF | Apr 1983 - Jun 2026 |
| White Hawk Oil Company, LLP | Kansas | 2,594 BBLs | 0 MCF | Jan 1980 - Jun 2026 |
| White Rock Oil & Gas, LLC | Montana | 188,112 BBLs | 167,707 MCF | Jan 2015 - Jul 2026 |
| White Rock Oil & Gas, LLC | North Dakota | 78,877 BBLs | 73,718 MCF | Sep 2015 - Jul 2026 |
| Whitetail Crude, Inc | Kansas | 1,104 BBLs | 97 MCF | Jan 1980 - Jun 2026 |
| Whiting Oil And Gas Corporation | Montana | 34,414 BBLs | 44,466 MCF | Oct 2003 - Jul 2026 |
| Whiting Oil And Gas Corporation | North Dakota | 1,360,191 BBLs | 5,854,841 MCF | Jun 2002 - Jul 2026 |
| Whitney Oil & Gas, LLC | Louisiana | 28,298 BBLs | 26,495 MCF | Jul 2015 - Jan 2025 |
| Wiepking-Fullerton Energy LLC | Colorado | 5,381 BBLs | 4,028 MCF | Jan 1999 - Jul 2026 |
| Wilcox Energy Company | Louisiana | 9,355 BBLs | 0 MCF | Nov 1984 - Dec 2024 |
| Windham Oil Corp. | Louisiana | 4,053 BBLs | 0 MCF | Jul 1996 - Dec 2024 |
| Wolverine Gas & Oil Company Of Utah, LLC | Utah | 74,495 BBLs | 37,850 MCF | May 2004 - Jul 2026 |
| WPX Energy Permian, LLC | New Mexico | 514,602 BBLs | 3,915,059 MCF | Jan 2007 - Jul 2026 |
| WPX Energy Rocky Mountain LLC | Colorado | 40,957 BBLs | 15,466,802 MCF | Jan 1999 - Jul 2026 |
| WRC Energy LLC | Wyoming | 526,823 BBLs | 1,505,497 MCF | Aug 2018 - Aug 2026 |
| XTO Energy Inc | North Dakota | 2,380,930 BBLs | 6,474,085 MCF | Jun 2007 - Jul 2026 |
| XTO Energy Inc. | Kansas | 190 BBLs | 51,505 MCF | Jan 1980 - Jun 2026 |
| XTO Energy Inc. | Louisiana | 50,026 BBLs | 942,997 MCF | Jun 2001 - Dec 2024 |
| XTO Energy, Inc | New Mexico | 2,192,132 BBLs | 9,953,384 MCF | Jan 1993 - Jul 2026 |
| XTO Permian Operating LLC. | New Mexico | 7,801,204 BBLs | 33,967,111 MCF | May 2019 - Jul 2026 |
| Younger Energy Company | Kansas | 2,526 BBLs | 850 MCF | Jan 1980 - Jun 2026 |
| Z & L Oil LLC | Kansas | 1,549 BBLs | 0 MCF | Jan 2010 - Jun 2026 |
| Zachry Exploration, LLC | Louisiana | 13,515 BBLs | 84,415 MCF | Jan 2010 - Dec 2024 |
| Zargon Oil (ND) Inc. | North Dakota | 8,302 BBLs | 298 MCF | Jul 2002 - Jul 2026 |
| Zarvona Energy LLC | Louisiana | 6,049 BBLs | 40,890 MCF | Apr 2016 - Jan 2025 |
| Zavanna Energy Operating, LLC | North Dakota | 234,186 BBLs | 1,108,107 MCF | Apr 2025 - Jul 2026 |
| Zenith Drilling Corporation | Kansas | 1,911 BBLs | 392 MCF | Jan 1980 - Jun 2026 |