Petrowest Energy Services Trust is an open-ended unincorporated mutual fund trust. The trust is engaged in providing pre-drilling and post-completion oilfield services to the northern region of the Western Canadian Sedimentary Basin as well as industrial and civil infrastructure projects, gravel crushing and hauling for non-energy sector customers. Co. operates in 4 segments: road and lease construction, transportation and hauling, civil services, and heavy equipment rentals.