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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 DOWN HOLE 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