(1) The term "pipeline" when used in this act includes all real estate, gathering lines, fixtures and personal property owned, controlled, operated or managed in connection with or to facilitate the transmission, storage, distribution or delivery of natural gas or manufactured gas, crude oil or other fluid substances except water through pipelines.
(2)  "Gathering lines" means fixtures, valves, pipes and other property used to transport, deliver or distribute natural gas, manufactured gas, natural gas condensate, crude oil or other petroleum products from a wellhead to a transmission line.