Endeavor Energy Resources, LP v. Energen Resources Corp. (Opinion)Annotate this Case
In this dispute over the meaning of an oil and gas lease covering an 11,300-acre tract in Howard County, the Supreme Court reversed the judgment of the court of appeals affirming the trial court's grant of summary judgment for Energen Resources Corp. and John Quinn, holding that the contested provision of the lease in this case was ambiguous.
The lease at issue allowed Endeavor Energy Resources, L.P. to retain its leasehold interest in the parcel only by drilling a new well every 150 days, with the exception that Endeavor could "accumulate unused days in any 150-day term...in order to extend the next allowed 150-day term between the completion of one well and the drilling of a subsequent well." At issue on appeal was how to calculate the number of "unused days." Energen and Quinn argued that the contested provision unambiguously allowed unused days earned in any term to be carried forward only once to the next 150-day term. The trial court agreed, and the court of appeals affirmed. The Supreme Court reversed, holding that the disputed provision was ambiguous.