Endeavor Energy Resources, LP v. Discovery Operating, Inc.

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In this case involving competing claims to mineral-lease interests in two tracts of land, the Supreme Court affirmed the judgments of the trial court and court of appeals that the acreage Endeavor Energy Resources, LP and Endeavor Petroleum, LLC (collectively, Endeavor) retained under “retained-acreage clauses” in expired leases did not include the two tracts at issue. Discovery Operating, Inc., which drilled producing wells on the two subject tracts, claimed the mineral-lease interests based on leases acquired directly from the mineral-estate owners. Endeavor based its claim on prior leases with the same owners covering land that included the two subject tracts. Endeavor never drilled on the tracts, and Endeavor’s leases’ terms had expired. However, the leases included “retained-acreage clauses” providing that the leases would continue after they expired as to a certain number of acres associated with each of the wells Endeavor drilled on adjacent tracts. Supreme Court affirmed the judgment of the lower courts, holding that “a governmental proration unit assigned to a well” refers to acreage assigned by the operator, not by field rules. View "Endeavor Energy Resources, LP v. Discovery Operating, Inc." on Justia Law