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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Warrior Met Coal Gas, LLC | Alabama | 0 BBLs | 386,038 MCF | Sep 1984 - Jun 2026 |
| Wave Petroleum Operating LLC | Wyoming | 14,601 BBLs | 4,847 MCF | Dec 2014 - Jun 2026 |
| Webco Oil Company, Inc. | Kansas | 1,346 BBLs | 0 MCF | Jan 1980 - Apr 2026 |
| Webster Oil LLC | Kansas | 1,278 BBLs | 0 MCF | Jan 2010 - Apr 2026 |
| Weigel Oil Company, LLC | Kansas | 2,066 BBLs | 0 MCF | Feb 1980 - Apr 2026 |
| Wem Operating, LLC | Utah | 170,763 BBLs | 541,841 MCF | Dec 2023 - Jun 2026 |
| Wesco Operating Inc | Colorado | 1,204 BBLs | 0 MCF | Jan 1999 - May 2026 |
| Wesco Operating Inc | Wyoming | 23,733 BBLs | 15,277 MCF | Jan 1991 - Jun 2026 |
| Wesco Operating, Inc | Utah | 6,871 BBLs | 58,595 MCF | Mar 2016 - Jun 2026 |
| Wesco Operating, Inc. | Montana | 6,128 BBLs | 2,847 MCF | Jun 1999 - Jun 2026 |
| Wesco Operating, Inc. | North Dakota | 7,962 BBLs | 7,282 MCF | Aug 1987 - Jun 2026 |
| West Bay Exploration Company | Michigan | 31,045 BBLs | 38,138 MCF | Jul 1982 - Jun 2026 |
| Wexpro Company | Colorado | 1,825 BBLs | 292,428 MCF | Jan 1999 - May 2026 |
| Wexpro Company | Utah | 5,249 BBLs | 186,637 MCF | Jan 1971 - Jun 2026 |
| Wexpro Company | Wyoming | 7,687 BBLs | 2,736,053 MCF | Jan 1978 - Jun 2026 |
| Wexpro II Company | Wyoming | 611 BBLs | 326,113 MCF | Mar 2017 - Jun 2026 |
| Wgo Resources, LLC | North Dakota | 9,511 BBLs | 5,597 MCF | Jan 2025 - Jun 2026 |
| Whisler Enterprise Company | Wyoming | 1,693 BBLs | 0 MCF | May 2021 - Jun 2026 |
| White & Ellis Drilling, Inc. | Kansas | 1,959 BBLs | 1,761 MCF | Jan 1980 - Apr 2026 |
| White Butte Oil Operations, LLC | North Dakota | 12,008 BBLs | 94,737 MCF | Apr 2015 - Jun 2026 |
| White Exploration, Inc. | Kansas | 2,483 BBLs | 9,824 MCF | Apr 1983 - Apr 2026 |
| White Hawk Oil Company, LLP | Kansas | 2,589 BBLs | 0 MCF | Jan 1980 - Apr 2026 |
| White Pine Production LLC | Michigan | 12,046 BBLs | 11,353 MCF | Sep 2022 - May 2026 |
| White Rock Oil & Gas, LLC | Montana | 202,661 BBLs | 155,815 MCF | Jan 2015 - Jun 2026 |
| White Rock Oil & Gas, LLC | North Dakota | 82,659 BBLs | 73,868 MCF | Sep 2015 - Jun 2026 |
| Whitetail Crude, Inc | Kansas | 1,424 BBLs | 39 MCF | Jan 1980 - Apr 2026 |
| Whiting Oil And Gas Corporation | Montana | 35,168 BBLs | 48,844 MCF | Oct 2003 - Jun 2026 |
| Whiting Oil And Gas Corporation | North Dakota | 1,334,736 BBLs | 5,942,470 MCF | Jun 2002 - Jun 2026 |
| Whitney Oil & Gas, LLC | Louisiana | 28,298 BBLs | 26,495 MCF | Jul 2015 - Jan 2025 |
| Wilcox Energy Company | Louisiana | 9,355 BBLs | 0 MCF | Nov 1984 - Dec 2024 |
| Wilton Petroleum, Inc. | Kansas | 2,606 BBLs | 1,566 MCF | Jan 1980 - Apr 2026 |
| Windham Oil Corp. | Louisiana | 4,053 BBLs | 0 MCF | Jul 1996 - Dec 2024 |
| Wolverine Gas And Oil Company Of Michigan LLC | Michigan | 35,916 BBLs | 0 MCF | Oct 2016 - May 2026 |
| WPX Energy Permian, LLC | New Mexico | 537,204 BBLs | 3,959,669 MCF | Jan 2007 - Jun 2026 |
| WPX Energy Rocky Mountain LLC | Colorado | 40,749 BBLs | 15,929,380 MCF | Jan 1999 - May 2026 |
| WRC Energy LLC | Wyoming | 449,335 BBLs | 1,407,348 MCF | Aug 2018 - Jun 2026 |
| Wy Basin Operating LLC | Wyoming | 0 BBLs | 182,122 MCF | Dec 2003 - Jun 2026 |
| XTO Energy Inc | North Dakota | 2,170,115 BBLs | 6,312,524 MCF | Jun 2007 - Jun 2026 |
| XTO Energy Inc. | Kansas | 183 BBLs | 51,020 MCF | Jan 1980 - Apr 2026 |
| XTO Energy Inc. | Louisiana | 50,026 BBLs | 942,997 MCF | Jun 2001 - Dec 2024 |
| XTO Energy, Inc | New Mexico | 1,780,783 BBLs | 9,093,728 MCF | Jan 1993 - Jun 2026 |
| XTO Permian Operating LLC. | New Mexico | 7,611,613 BBLs | 31,545,988 MCF | May 2019 - Jun 2026 |
| Yates Industries LLC | New Mexico | 1,554 BBLs | 845 MCF | Sep 2021 - Jun 2026 |
| Younger Energy Company | Kansas | 3,021 BBLs | 908 MCF | Jan 1980 - Apr 2026 |
| Z & L Oil LLC | Kansas | 1,724 BBLs | 0 MCF | Jan 2010 - Apr 2026 |
| Zachry Exploration, LLC | Louisiana | 13,515 BBLs | 84,415 MCF | Jan 2010 - Dec 2024 |
| Zargon Oil (ND) Inc. | North Dakota | 8,849 BBLs | 314 MCF | Jul 2002 - Jun 2026 |
| Zarvona Energy LLC | Louisiana | 6,049 BBLs | 40,890 MCF | Apr 2016 - Jan 2025 |
| Zavanna Energy Operating, LLC | North Dakota | 201,864 BBLs | 771,425 MCF | Apr 2025 - Jun 2026 |
| Zenith Drilling Corporation | Kansas | 2,272 BBLs | 425 MCF | Jan 1980 - Apr 2026 |