Power operated downhole tools used for the drilling of oil and gas, namely power operated drill bits, reamers, cutters, junk subs and debris catchers; power operated well cleaning downhole tools, namely power operated wipers, scrapers, brush tools; polishers and scourers for maintaining a clean interior of a casing or liner within a well bore; power operated fluid filters for selectively filtering and removing solids from downhole fluids; power operated fluid circulators that cause downhole fluid to impact the interior of the casing of a liner within a well bore to provide a cleaning action and which select a path for fluid travel in the casing or a liner within a well bore; power operated downhole tools for isolating zones or creating barriers in well casings, namely zonal isolation packers, mud packers, packer installers, inflatable packers and packer setters