78070779
Jun 25, 2001
Nov 12, 2002
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
Machinery