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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Wapiti Operating, LLC | Utah | 4,557 BBLs | 905,451 MCF | Jul 2013 - Feb 2026 |
| Wapiti Petroleum, LLC | Kansas | 1,366 BBLs | 2,487 MCF | Jan 2020 - Dec 2025 |
| Warhorse Petroleum Inc | Kansas | 3,399 BBLs | 0 MCF | Jan 2010 - Dec 2025 |
| Warrior Met Coal Gas, LLC | Alabama | 0 BBLs | 389,988 MCF | Sep 1984 - Jan 2026 |
| Weigel Oil Company, LLC | Kansas | 1,942 BBLs | 0 MCF | Feb 1980 - Dec 2025 |
| Wem Operating, LLC | Utah | 273,251 BBLs | 605,200 MCF | Dec 2023 - Jan 2026 |
| Wesco Operating Inc | Colorado | 1,066 BBLs | 0 MCF | Jan 1999 - Jan 2026 |
| Wesco Operating Inc | Wyoming | 28,749 BBLs | 79,760 MCF | Jan 1991 - Feb 2026 |
| Wesco Operating, Inc | Utah | 7,391 BBLs | 99,743 MCF | Mar 2016 - Jan 2026 |
| Wesco Operating, Inc. | Montana | 6,166 BBLs | 2,964 MCF | Jun 1999 - Jan 2026 |
| Wesco Operating, Inc. | North Dakota | 7,558 BBLs | 6,871 MCF | Aug 1987 - Feb 2026 |
| West Bay Exploration Company | Michigan | 32,377 BBLs | 41,822 MCF | Jul 1982 - Aug 2025 |
| Wexpro Company | Colorado | 1,704 BBLs | 260,554 MCF | Jan 1999 - Jan 2026 |
| Wexpro Company | Utah | 4,919 BBLs | 208,263 MCF | Jan 1971 - Jan 2026 |
| Wexpro Company | Wyoming | 13,386 BBLs | 3,594,072 MCF | Jan 1978 - Jan 2026 |
| Wexpro II Company | Wyoming | 1,315 BBLs | 407,657 MCF | Mar 2017 - Jan 2026 |
| Wgo Resources, LLC | North Dakota | 11,556 BBLs | 6,615 MCF | Nov 2024 - Feb 2026 |
| Whisler Enterprise Company | Wyoming | 1,716 BBLs | 0 MCF | May 2021 - Feb 2026 |
| White & Ellis Drilling, Inc. | Kansas | 1,215 BBLs | 1,476 MCF | Jan 1980 - Dec 2025 |
| White Butte Oil Operations, LLC | North Dakota | 5,461 BBLs | 35,085 MCF | Apr 2015 - Feb 2026 |
| White Exploration, Inc. | Kansas | 1,935 BBLs | 12,768 MCF | Apr 1983 - Dec 2025 |
| White Hawk Oil Company, LLP | Kansas | 2,563 BBLs | 0 MCF | Jan 1980 - Dec 2025 |
| White Pine Production LLC | Michigan | 11,629 BBLs | 8,351 MCF | Sep 2022 - Sep 2025 |
| White Rock Oil & Gas, LLC | Montana | 213,989 BBLs | 158,232 MCF | Jan 2015 - Jan 2026 |
| White Rock Oil & Gas, LLC | North Dakota | 76,676 BBLs | 69,480 MCF | Sep 2015 - Feb 2026 |
| Whiting Oil And Gas Corporation | Montana | 32,968 BBLs | 42,379 MCF | Oct 2003 - Jan 2026 |
| Whiting Oil And Gas Corporation | North Dakota | 1,305,414 BBLs | 5,654,511 MCF | Jun 2002 - Feb 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 | 1,591 BBLs | 1,892 MCF | Jan 1980 - Dec 2025 |
| Windham Oil Corp. | Louisiana | 4,053 BBLs | 0 MCF | Jul 1996 - Dec 2024 |
| Windridge Operating LLC | North Dakota | 860 BBLs | 7,615 MCF | Jul 2017 - Feb 2026 |
| Wolverine Gas & Oil Company Of Utah, LLC | Utah | 82,371 BBLs | 39,081 MCF | May 2004 - Feb 2026 |
| Wolverine Gas And Oil Company Of Michigan LLC | Michigan | 38,671 BBLs | 0 MCF | Oct 2016 - Aug 2025 |
| WPX Energy Permian, LLC | New Mexico | 205,939 BBLs | 1,601,039 MCF | Jan 2007 - Jan 2026 |
| WPX Energy Rocky Mountain LLC | Colorado | 50,189 BBLs | 16,071,086 MCF | Jan 1999 - Jan 2026 |
| WRC Energy LLC | Wyoming | 362,270 BBLs | 1,170,274 MCF | Aug 2018 - Jan 2026 |
| XTO Energy Inc | North Dakota | 1,463,522 BBLs | 4,728,556 MCF | Jun 2007 - Feb 2026 |
| XTO Energy Inc. | Kansas | 187 BBLs | 51,870 MCF | Jan 1980 - Dec 2025 |
| XTO Energy Inc. | Louisiana | 50,026 BBLs | 942,997 MCF | Jun 2001 - Dec 2024 |
| XTO Energy, Inc | New Mexico | 1,288,403 BBLs | 8,062,156 MCF | Jan 1993 - Jan 2026 |
| XTO Permian Operating LLC. | New Mexico | 7,218,590 BBLs | 29,954,180 MCF | May 2019 - Jan 2026 |
| Yates Industries LLC | New Mexico | 1,484 BBLs | 550 MCF | Sep 2021 - Jan 2026 |
| Younger Energy Company | Kansas | 1,900 BBLs | 1,084 MCF | Jan 1980 - Dec 2025 |
| Z & L Oil LLC | Kansas | 1,385 BBLs | 0 MCF | Jan 2010 - Dec 2025 |
| Zachry Exploration, LLC | Louisiana | 13,515 BBLs | 84,415 MCF | Jan 2010 - Dec 2024 |
| Zarvona Energy LLC | Louisiana | 6,049 BBLs | 40,890 MCF | Apr 2016 - Jan 2025 |
| Zavanna Energy Operating, LLC | North Dakota | 218,568 BBLs | 687,453 MCF | Apr 2025 - Feb 2026 |
| Zenith Drilling Corporation | Kansas | 1,765 BBLs | 277 MCF | Jan 1980 - Dec 2025 |
| Zeta Energy LLC | Kansas | 1,147 BBLs | 0 MCF | Jan 2010 - Dec 2025 |