A-Z INTERNATIONAL

TOOLS USED IN THE DRILLING OF BORES INTO THE EARTH'S CRUST, PRIMARILY IN THE ROTARY DRILLING OF OIL AND GAS WELLS-NAMELY, PERMANENT PILING ANCHORS, CURLEW BIT, PACKER BIT, UNDERREAMERS, JUNK BASKETS, CASING PATCH, CASING SCRAPERS, DIE COLLARS, DRILL COLLARS, CONDUCTOR PIPE SYSTEM, CUTTERS, MARINE SPEARS, MARINE SWIVEL, MILLS; NIPPLES, PACKER RETRIEVERS, LIFTING PLUGS, REVERSE CIRCULATION SUBS, ROTARY SUBS, LIFTING SUBS, KELLY SCREW SUBS, SECTION MILL, ROTARY SHOES, RELEASING SPEARS, WELDED BLADE STABILIZER, TAPS AND WASHPIPE