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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Warhorse Petroleum Inc | Kansas | 2,904 BBLs | 0 MCF | Jan 2010 - Mar 2026 |
| Warrior Met Coal Gas, LLC | Alabama | 0 BBLs | 340,854 MCF | Sep 1984 - Mar 2026 |
| Wave Petroleum Operating LLC | Wyoming | 21,635 BBLs | 7,534 MCF | Dec 2014 - May 2026 |
| Weigel Oil Company, LLC | Kansas | 1,588 BBLs | 0 MCF | Feb 1980 - Mar 2026 |
| Wem Operating, LLC | Utah | 207,406 BBLs | 507,718 MCF | Dec 2023 - Apr 2026 |
| Wesco Operating Inc | Colorado | 1,188 BBLs | 0 MCF | Jan 1999 - Apr 2026 |
| Wesco Operating Inc | Wyoming | 27,964 BBLs | 13,432 MCF | Jan 1991 - May 2026 |
| Wesco Operating, Inc | Utah | 8,361 BBLs | 88,008 MCF | Mar 2016 - Apr 2026 |
| Wesco Operating, Inc. | Montana | 5,318 BBLs | 2,655 MCF | Jun 1999 - Apr 2026 |
| Wesco Operating, Inc. | North Dakota | 7,962 BBLs | 7,282 MCF | Aug 1987 - May 2026 |
| West Bay Exploration Company | Michigan | 29,971 BBLs | 32,558 MCF | Jul 1982 - May 2026 |
| Wexpro Company | Colorado | 1,489 BBLs | 274,708 MCF | Jan 1999 - Mar 2026 |
| Wexpro Company | Utah | 5,764 BBLs | 197,410 MCF | Jan 1971 - Apr 2026 |
| Wexpro Company | Wyoming | 11,391 BBLs | 2,929,760 MCF | Jan 1978 - Apr 2026 |
| Wexpro II Company | Wyoming | 978 BBLs | 386,695 MCF | Mar 2017 - Apr 2026 |
| Wgo Resources, LLC | North Dakota | 9,511 BBLs | 5,597 MCF | Nov 2024 - May 2026 |
| Whisler Enterprise Company | Wyoming | 2,031 BBLs | 0 MCF | May 2021 - May 2026 |
| White & Ellis Drilling, Inc. | Kansas | 1,628 BBLs | 1,239 MCF | Jan 1980 - Mar 2026 |
| White Butte Oil Operations, LLC | North Dakota | 12,008 BBLs | 94,737 MCF | Apr 2015 - May 2026 |
| White Exploration, Inc. | Kansas | 976 BBLs | 9,615 MCF | Apr 1983 - Mar 2026 |
| White Hawk Oil Company, LLP | Kansas | 2,726 BBLs | 0 MCF | Jan 1980 - Mar 2026 |
| White Rock Oil & Gas, LLC | Montana | 197,739 BBLs | 152,351 MCF | Jan 2015 - Apr 2026 |
| White Rock Oil & Gas, LLC | North Dakota | 82,784 BBLs | 73,868 MCF | Sep 2015 - May 2026 |
| Whitetail Crude, Inc | Kansas | 1,105 BBLs | 72 MCF | Jan 1980 - Mar 2026 |
| Whiting Oil And Gas Corporation | Montana | 31,841 BBLs | 42,709 MCF | Oct 2003 - Apr 2026 |
| Whiting Oil And Gas Corporation | North Dakota | 1,334,735 BBLs | 5,942,470 MCF | Jun 2002 - May 2026 |
| Whitney Oil & Gas, LLC | Louisiana | 28,298 BBLs | 26,495 MCF | Jul 2015 - Jan 2025 |
| Wiepking-Fullerton Energy LLC | Colorado | 6,323 BBLs | 4,301 MCF | Jan 1999 - Mar 2026 |
| Wilcox Energy Company | Louisiana | 9,355 BBLs | 0 MCF | Nov 1984 - Dec 2024 |
| Wilton Petroleum, Inc. | Kansas | 1,187 BBLs | 1,500 MCF | Jan 1980 - Mar 2026 |
| Windham Oil Corp. | Louisiana | 4,053 BBLs | 0 MCF | Jul 1996 - Dec 2024 |
| Windridge Operating LLC | North Dakota | 774 BBLs | 6,090 MCF | Jul 2017 - May 2026 |
| Wolverine Gas & Oil Company Of Utah, LLC | Utah | 75,185 BBLs | 37,394 MCF | May 2004 - May 2026 |
| Wolverine Gas And Oil Company Of Michigan LLC | Michigan | 34,421 BBLs | 0 MCF | Oct 2016 - Apr 2026 |
| WPX Energy Permian, LLC | New Mexico | 767,801 BBLs | 5,057,524 MCF | Jan 2007 - Apr 2026 |
| WPX Energy Rocky Mountain LLC | Colorado | 47,526 BBLs | 15,397,068 MCF | Jan 1999 - Apr 2026 |
| WRC Energy LLC | Wyoming | 571,383 BBLs | 1,517,811 MCF | Aug 2018 - Apr 2026 |
| XTO Energy Inc | North Dakota | 2,170,115 BBLs | 6,312,524 MCF | Jun 2007 - May 2026 |
| XTO Energy Inc. | Kansas | 200 BBLs | 48,752 MCF | Jan 1980 - Mar 2026 |
| XTO Energy Inc. | Louisiana | 50,026 BBLs | 942,997 MCF | Jun 2001 - Dec 2024 |
| XTO Energy, Inc | New Mexico | 1,135,463 BBLs | 7,356,072 MCF | Jan 1993 - Apr 2026 |
| XTO Permian Operating LLC. | New Mexico | 8,596,663 BBLs | 34,481,666 MCF | May 2019 - Apr 2026 |
| Yates Industries LLC | New Mexico | 1,786 BBLs | 917 MCF | Sep 2021 - May 2026 |
| Younger Energy Company | Kansas | 2,943 BBLs | 881 MCF | Jan 1980 - Mar 2026 |
| Z & L Oil LLC | Kansas | 1,434 BBLs | 0 MCF | Jan 2010 - Mar 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 - May 2026 |
| Zarvona Energy LLC | Louisiana | 6,049 BBLs | 40,890 MCF | Apr 2016 - Jan 2025 |
| Zavanna Energy Operating, LLC | North Dakota | 201,923 BBLs | 771,425 MCF | Apr 2025 - May 2026 |
| Zenith Drilling Corporation | Kansas | 1,449 BBLs | 405 MCF | Jan 1980 - Mar 2026 |