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Marathon Oil Co. v. Mercuria Energy America, LLC

Business Court of Texas, 11th Division Cause No. 25-BC11A-0013 resolved

The Business Court of Texas ruled that modified NAESB contract language expressly relieving a party claiming force majeure of any obligation to seek alternative gas supplies excused Marathon Oil from purchasing spot-market gas or buying back delivery obligations after a winter storm disrupted its natural gas production. The decision clarifies that parties to oil and gas contracts can contractually limit the scope of "reasonable efforts" required under force majeure provisions, even when such efforts might otherwise be commercially feasible.

Analysis

Business Court Construes Force Majeure Carve-Out in Industry Form Gas Contract: No Duty to Purchase Spot-Market Gas

Marathon Oil declared force majeure during a winter storm and delivered less natural gas than contracted to energy trader Mercuria Energy America, triggering a breach of contract dispute over whether Marathon was required to purchase spot-market gas to fulfill delivery obligations. The Business Court of Texas held that the contract's force majeure provision relieved Marathon of any obligation to seek alternative gas supplies including spot-market purchases, construing 'seller's gas supply' to refer only to gas Marathon had available and not gas available for purchase on the spot market.

Joel Reese  |  Jul 20, 2026
Force Majeure Business Court of Texas Gas Sales Contract Spot Market Industry Form Contract

Business Court Enforces NAESB Transaction Confirmations in Natural Gas Force Majeure Dispute

Marathon Oil successfully defended its force majeure declaration after the Business Court of Texas held that a pipeline delivery term in its transaction confirmation became binding despite Mercuria's failure to check a box or expressly object to the term. The court ruled that timely transaction confirmations did not materially differ and combined with the parties' NAESB base contract to form an integrated agreement supporting Marathon's reduced delivery obligations.

Joel Reese  |  Jul 20, 2026
Force Majeure NAESB Business Court of Texas Natural Gas Trading Transaction Confirmations

Business Court Resolves Transaction Confirmation Dispute in Post-Winter Storm Uri Force Majeure Case

Marathon Oil invoked force majeure under a NAESB-form natural gas purchase agreement, with Mercuria challenging whether transaction confirmations specifying pipeline delivery terms were binding contract components. The Business Court held that both parties' transaction confirmations—despite only Marathon's containing the critical pipeline delivery specification—did not materially differ and thus combined with the base contract to form an integrated agreement supporting Marathon's force majeure declaration.

Joel Reese  |  Jul 06, 2026
Force Majeure Winter Storm Uri NAESB Transaction Confirmation Natural Gas Trading

Texas Business Court Holds Force Majeure Clause Excused Spot Market Purchases and Buybacks After Winter Storm Uri

The Business Court of Texas ruled that modified NAESB contract language expressly relieving a party claiming force majeure of any obligation to seek alternative gas supplies excused Marathon Oil from purchasing spot-market gas or buying back delivery obligations after a winter storm disrupted its natural gas production. The decision clarifies that parties to oil and gas contracts can contractually limit the scope of "reasonable efforts" required under force majeure provisions, even when such efforts might otherwise be commercially feasible.

Joel Reese  |  Jul 06, 2026
Texas Business Court Force Majeure Winter Storm Uri NAESB Natural Gas Marketing