Complex sentence: The plant processes crude oil from the well head and separates gases and contaminants from the crude for safety reasons, environmental reasons, and for economic reasons-to make the crude economically viable for storage, processing and export.
Split into simpler sentences: The plant processes crude oil from the well head and separates gases and contaminants from the crude for reasons of safety, economy, and environmental protection. This makes the crude economically viable for storage, processing and export.