Key Operating & Equipment, Inc. v. Will Hegar and Loree Hegar

OPINION ON REHEARING1

HARVEY BROWN, Justice.

A mineral estate owner has an implied easement for reasonable use of the surface estate in developing and extracting the minerals below. In this appeal, we decide what happens when a mineral estate owner, Key Operating & Equipment, Inc., wants to use that easement to extract minerals from several mineral estates that it pooled together after the surface estate was severed from the mineral estate. Key Operating appeals from the trial court’s injunction in favor of Will and Loree He-gar, the current owners of the surface estate, which prohibits Key…