QEP Energy Company v. Sullivan, No. 11-4012 (10th Cir. 2011)
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In 1999, Christopher Sullivan learned through a business acquaintance, Robert Weaver, acquired all interests in a particular oil and gas lease. The then-current operators of the wells on the lease, QEP Energy, made regular payments to Mr. Sullivan for several years. In early 2006 QEP determined that the total payments to Mr. Sullivan by all operators on the lease exceeded his interest in the leases. QEP therefore ceased further payments and sought reimbursement of the overpayment from Mr. Sullivan. He disputed the claim, asserting that QEP owed him additional payments. QEP brought this action in Utah state court, seeking a declaration of the amounts due Mr. Sullivan. It also sought recovery from Mr. Sullivan for the alleged overpayment. Both parties filed motions for partial summary judgment on their claims for declaratory relief. The district court held that the terms of Mr. Sullivan's interest (from when he acquired the original interest in the lease) unambiguously described he should have only received a three percent production-payment. The court granted partial summary judgment in favor of QEP, and dismissed Mr. Sullivan's claims with prejudice. Mr. Sullivan appealed. Upon review, the Tenth Circuit agreed with the district court's analysis of the leases in question and affirmed its decision in favor of QEP.
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