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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 | 404,643 MCF | Sep 1984 - Oct 2025 |
| Weigel Oil Company, LLC | Kansas | 1,538 BBLs | 0 MCF | Feb 1980 - Jun 2025 |
| Wem Operating, LLC | Utah | 208,893 BBLs | 427,516 MCF | Dec 2023 - Oct 2025 |
| Wesco Operating Inc | Colorado | 1,304 BBLs | 0 MCF | Jan 1999 - Oct 2025 |
| Wesco Operating Inc | Wyoming | 29,152 BBLs | 79,391 MCF | Jan 1991 - Oct 2025 |
| Wesco Operating, Inc | Utah | 9,633 BBLs | 99,631 MCF | Mar 2016 - Oct 2025 |
| Wesco Operating, Inc. | Montana | 4,692 BBLs | 1,288 MCF | Jun 1999 - Oct 2025 |
| Wesco Operating, Inc. | North Dakota | 7,804 BBLs | 6,349 MCF | Aug 1987 - Nov 2025 |
| West Bay Exploration Company | Michigan | 32,017 BBLs | 40,866 MCF | Jul 1982 - Oct 2025 |
| Wexpro Company | Colorado | 2,047 BBLs | 255,416 MCF | Jan 1999 - Oct 2025 |
| Wexpro Company | Utah | 6,663 BBLs | 212,103 MCF | Jan 1971 - Oct 2025 |
| Wexpro Company | Wyoming | 11,260 BBLs | 2,961,785 MCF | Jan 1978 - Oct 2025 |
| Wexpro II Company | Wyoming | 1,437 BBLs | 460,892 MCF | Mar 2017 - Oct 2025 |
| Wgo Resources, LLC | North Dakota | 7,065 BBLs | 3,813 MCF | Nov 2024 - Nov 2025 |
| Whisler Enterprise Company | Wyoming | 1,826 BBLs | 0 MCF | May 2021 - Nov 2025 |
| White & Ellis Drilling, Inc. | Kansas | 1,648 BBLs | 1,291 MCF | Jan 1980 - Jun 2025 |
| White Butte Oil Operations, LLC | North Dakota | 10,294 BBLs | 54,346 MCF | Apr 2015 - Nov 2025 |
| White Exploration, Inc. | Kansas | 2,477 BBLs | 14,648 MCF | Apr 1983 - Jun 2025 |
| White Hawk Oil Company, LLP | Kansas | 2,857 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| White Pine Production LLC | Michigan | 10,713 BBLs | 5,828 MCF | Sep 2022 - Oct 2025 |
| White Rock Oil & Gas, LLC | Montana | 115,929 BBLs | 127,209 MCF | Jan 2015 - Oct 2025 |
| White Rock Oil & Gas, LLC | North Dakota | 85,030 BBLs | 82,736 MCF | Sep 2015 - Nov 2025 |
| Whiting Oil And Gas Corporation | Montana | 30,472 BBLs | 41,200 MCF | Oct 2003 - Oct 2025 |
| Whiting Oil And Gas Corporation | North Dakota | 1,407,952 BBLs | 6,275,023 MCF | Jun 2002 - Nov 2025 |
| Whitney Oil & Gas, LLC | Louisiana | 28,298 BBLs | 26,495 MCF | Jul 2015 - Jan 2025 |
| Wiepking-Fullerton Energy LLC | Colorado | 5,368 BBLs | 3,537 MCF | Jan 1999 - Oct 2025 |
| Wilcox Energy Company | Louisiana | 9,355 BBLs | 0 MCF | Nov 1984 - Dec 2024 |
| Wilton Petroleum, Inc. | Kansas | 2,271 BBLs | 1,866 MCF | Jan 1980 - Jun 2025 |
| Windham Oil Corp. | Louisiana | 4,053 BBLs | 0 MCF | Jul 1996 - Dec 2024 |
| Windridge Operating LLC | North Dakota | 1,138 BBLs | 9,034 MCF | Jul 2017 - Nov 2025 |
| Wolverine Gas & Oil Company Of Utah, LLC | Utah | 83,557 BBLs | 39,643 MCF | May 2004 - Nov 2025 |
| WPX Energy Permian, LLC | New Mexico | 453,453 BBLs | 2,705,276 MCF | Jan 2007 - Nov 2025 |
| WPX Energy Rocky Mountain LLC | Colorado | 38,232 BBLs | 15,943,361 MCF | Jan 1999 - Nov 2025 |
| WPX Energy Williston, LLC | North Dakota | 980,994 BBLs | 3,629,647 MCF | Apr 2011 - Nov 2025 |
| WRC Energy LLC | Wyoming | 282,248 BBLs | 919,117 MCF | Aug 2018 - Oct 2025 |
| Wy Basin Operating LLC | Montana | 4,277 BBLs | 556 MCF | Oct 2024 - Oct 2025 |
| XCL Assetco, LLC | Utah | 556,292 BBLs | 612,517 MCF | Feb 2020 - Oct 2025 |
| XTO Energy Inc | North Dakota | 1,390,037 BBLs | 5,177,431 MCF | Jun 2007 - Nov 2025 |
| XTO Energy Inc. | Kansas | 366 BBLs | 63,728 MCF | Jan 1980 - Jun 2025 |
| XTO Energy Inc. | Louisiana | 50,026 BBLs | 942,997 MCF | Jun 2001 - Dec 2024 |
| XTO Energy, Inc | New Mexico | 1,661,736 BBLs | 10,515,484 MCF | Jan 1993 - Oct 2025 |
| XTO Permian Operating LLC. | New Mexico | 7,394,459 BBLs | 30,913,682 MCF | May 2019 - Oct 2025 |
| Yates Industries LLC | New Mexico | 1,964 BBLs | 926 MCF | Sep 2021 - Nov 2025 |
| Younger Energy Company | Kansas | 2,198 BBLs | 1,483 MCF | Jan 1980 - Jun 2025 |
| Z & L Oil LLC | Kansas | 2,130 BBLs | 0 MCF | Jan 2010 - Jun 2025 |
| Zachry Exploration, LLC | Louisiana | 13,515 BBLs | 84,415 MCF | Jan 2010 - Dec 2024 |
| Zargon Oil (ND) Inc. | North Dakota | 7,276 BBLs | 253 MCF | Jul 2002 - Nov 2025 |
| Zarvona Energy LLC | Louisiana | 6,049 BBLs | 40,890 MCF | Apr 2016 - Jan 2025 |
| Zavanna, LLC | North Dakota | 293,020 BBLs | 676,332 MCF | Apr 2007 - Nov 2025 |
| Zenith Drilling Corporation | Kansas | 2,090 BBLs | 740 MCF | Jan 1980 - Jun 2025 |