【建筑】钻探浆（钻探泥浆）【建筑】钻润滑剂

offshore drilling

drilling out (boring out)

slip-type elevator for deep-well drilling rods

adjustable multi-spindle bench drilling machines【机】

rotary-drilling machine with coupling (hitch) for mining

slip-type elevators with deep-well drilling rods

logging while drilling【地质】

multiple spindle drilling machin