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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Wapiti Operating LLC | Colorado | 0 BBLs | 222,292 MCF | Jun 1999 - Dec 2025 |
| Wapiti Operating LLC | Wyoming | 7 BBLs | 22,293 MCF | Apr 2018 - Dec 2025 |
| Wapiti Operating, LLC | New Mexico | 0 BBLs | 937,507 MCF | Nov 2019 - Dec 2025 |
| Wapiti Operating, LLC | Utah | 5,370 BBLs | 923,100 MCF | Jul 2013 - Dec 2025 |
| Wapiti Petroleum, LLC | Kansas | 1,713 BBLs | 2,011 MCF | Jan 2020 - Sep 2025 |
| Warhorse Petroleum Inc | Kansas | 3,339 BBLs | 0 MCF | Jan 2010 - Sep 2025 |
| Warrior Met Coal Gas, LLC | Alabama | 0 BBLs | 403,523 MCF | Sep 1984 - Oct 2025 |
| Wavetech Helium Inc | Colorado | 0 BBLs | 10,177 MCF | Jan 1999 - Nov 2025 |
| Weigel Oil Company, LLC | Kansas | 1,600 BBLs | 0 MCF | Feb 1980 - Sep 2025 |
| Wem Operating, LLC | Utah | 235,949 BBLs | 519,142 MCF | Dec 2023 - Dec 2025 |
| Wesco Operating Inc | Wyoming | 29,664 BBLs | 81,827 MCF | Jan 1991 - Dec 2025 |
| Wesco Operating, Inc | Utah | 8,624 BBLs | 97,397 MCF | Mar 2016 - Dec 2025 |
| Wesco Operating, Inc. | Montana | 5,619 BBLs | 2,160 MCF | Jun 1999 - Dec 2025 |
| Wesco Operating, Inc. | North Dakota | 7,347 BBLs | 5,627 MCF | Aug 1987 - Dec 2025 |
| Wexpro Company | Colorado | 3,030 BBLs | 273,404 MCF | Jan 1999 - Nov 2025 |
| Wexpro Company | Utah | 5,535 BBLs | 208,828 MCF | Jan 1971 - Dec 2025 |
| Wexpro Company | Wyoming | 11,271 BBLs | 3,144,504 MCF | Jan 1978 - Nov 2025 |
| Wexpro II Company | Wyoming | 873 BBLs | 418,110 MCF | Mar 2017 - Nov 2025 |
| Wgo Resources, LLC | North Dakota | 12,410 BBLs | 7,835 MCF | Nov 2024 - Dec 2025 |
| Whisler Enterprise Company | Wyoming | 1,526 BBLs | 0 MCF | May 2021 - Jan 2026 |
| White & Ellis Drilling, Inc. | Kansas | 1,618 BBLs | 1,653 MCF | Jan 1980 - Sep 2025 |
| White Butte Oil Operations, LLC | North Dakota | 8,762 BBLs | 51,395 MCF | Apr 2015 - Dec 2025 |
| White Exploration, Inc. | Kansas | 1,889 BBLs | 12,543 MCF | Apr 1983 - Sep 2025 |
| White Hawk Oil Company, LLP | Kansas | 2,736 BBLs | 0 MCF | Jan 1980 - Sep 2025 |
| White Rock Oil & Gas, LLC | Montana | 106,301 BBLs | 124,099 MCF | Jan 2015 - Dec 2025 |
| White Rock Oil & Gas, LLC | North Dakota | 86,374 BBLs | 80,604 MCF | Sep 2015 - Dec 2025 |
| Whiting Oil And Gas Corporation | Montana | 35,479 BBLs | 46,576 MCF | Oct 2003 - Dec 2025 |
| Whiting Oil And Gas Corporation | North Dakota | 1,422,840 BBLs | 6,312,056 MCF | Jun 2002 - Dec 2025 |
| 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 | 1,436 BBLs | 2,131 MCF | Jan 1980 - Sep 2025 |
| Windham Oil Corp. | Louisiana | 4,053 BBLs | 0 MCF | Jul 1996 - Dec 2024 |
| Windridge Operating LLC | North Dakota | 1,009 BBLs | 8,703 MCF | Jul 2017 - Dec 2025 |
| Wolverine Gas & Oil Company Of Utah, LLC | Utah | 83,194 BBLs | 38,823 MCF | May 2004 - Dec 2025 |
| WPX Energy Permian, LLC | New Mexico | 279,855 BBLs | 1,986,850 MCF | Jan 2007 - Dec 2025 |
| WPX Energy Rocky Mountain LLC | Colorado | 31,976 BBLs | 14,226,894 MCF | Jan 1999 - Dec 2025 |
| WRC Energy LLC | Wyoming | 246,639 BBLs | 892,410 MCF | Aug 2018 - Dec 2025 |
| XTO Energy Inc | North Dakota | 1,321,138 BBLs | 5,002,444 MCF | Jun 2007 - Dec 2025 |
| XTO Energy Inc. | Kansas | 367 BBLs | 52,984 MCF | Jan 1980 - Sep 2025 |
| XTO Energy Inc. | Louisiana | 50,026 BBLs | 942,997 MCF | Jun 2001 - Dec 2024 |
| XTO Energy, Inc | New Mexico | 1,383,696 BBLs | 8,890,692 MCF | Jan 1993 - Dec 2025 |
| XTO Permian Operating LLC. | New Mexico | 7,922,504 BBLs | 31,089,300 MCF | May 2019 - Dec 2025 |
| Yates Industries LLC | New Mexico | 1,958 BBLs | 791 MCF | Sep 2021 - Jan 2026 |
| Younger Energy Company | Kansas | 2,572 BBLs | 1,154 MCF | Jan 1980 - Sep 2025 |
| Z & L Oil LLC | Kansas | 1,396 BBLs | 0 MCF | Jan 2010 - Sep 2025 |
| Zachry Exploration, LLC | Louisiana | 13,515 BBLs | 84,415 MCF | Jan 2010 - Dec 2024 |
| Zargon Oil (ND) Inc. | North Dakota | 7,823 BBLs | 275 MCF | Jul 2002 - Dec 2025 |
| Zarvona Energy LLC | Louisiana | 6,049 BBLs | 40,890 MCF | Apr 2016 - Jan 2025 |
| Zavanna, LLC | North Dakota | 286,622 BBLs | 910,191 MCF | Apr 2007 - Dec 2025 |
| Zenith Drilling Corporation | Kansas | 1,744 BBLs | 367 MCF | Jan 1980 - Sep 2025 |