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Eighth Circuit Rules on Tribal Court Jurisdiction Over Non-Indian Oil and Gas Operators in Fort Berthold Reservation Dispute

WPX Energy Williston, LLC v. Gabriel Fettig and The Honorable B.J. Jones U.S. Court of Appeals, Eighth Circuit 25-1083 resolved
By Joel Reese · October 12, 2026 U.S. Court of Appeals, Eighth Circuit

Devon Energy (formerly WPX Energy Williston) appealed a tribal court jurisdiction determination by the Three Affiliated Tribes District Court over oil and gas operations on the Fort Berthold Indian Reservation in North Dakota, challenging the court's authority to adjudicate disputes involving non-Indian operators. The Eighth Circuit's decision addresses the scope of tribal court civil jurisdiction and its application to non-Indian energy companies operating on reservation lands.

Williston Basin Tribal Court Jurisdiction Montana v. United States North Dakota E&P Operations

Background

WPX Energy Williston, LLC—now operating as Devon Energy Williston, L.L.C. following corporate consolidation—challenged the jurisdictional authority of the Three Affiliated Tribes District Court over disputes arising from its oil and gas operations within the Fort Berthold Indian Reservation in North Dakota. The case reached the Eighth Circuit on appeal from a tribal court determination that it possessed jurisdiction to adjudicate claims involving the non-Indian operator's activities on reservation lands. The dispute involves Gabriel Fettig and other parties, with the Honorable B.J. Jones presiding over the tribal court proceedings that Devon sought to challenge in federal court.

The Jurisdictional Dispute

The central legal issue involves the extent of tribal court civil jurisdiction over non-Indian oil and gas operators conducting operations on reservation lands. The case required the Eighth Circuit to determine whether Devon's oil and gas operations subjected the company to tribal court jurisdiction despite its non-Indian status. The dispute centers on whether the tribal court had authority to adjudicate claims related to Devon's operations within the Fort Berthold Reservation.

Eighth Circuit Analysis

The Eighth Circuit issued its decision addressing the scope of tribal court jurisdiction over Devon's operations. The appeal presented questions regarding tribal court authority over non-Indian operators conducting oil and gas activities on reservation lands. The decision provides guidance on the boundaries of tribal court civil jurisdiction in cases involving non-Indian energy companies operating within reservation boundaries in North Dakota.

Implications for Operators

The Eighth Circuit's ruling provides guidance for oil and gas operators conducting business on or near Indian reservations in North Dakota and throughout the circuit's jurisdiction. Operators must carefully evaluate the scope of tribal court jurisdiction when conducting oil and gas operations on reservation lands. The decision clarifies the circumstances under which non-Indian operators may be subject to tribal court authority for their activities within the Fort Berthold Reservation and similar jurisdictional contexts.