Milling tool is a kind of tool for milling the fishes. Such as bits, cone, cutter gauge, slip elements, swivel wash pipes, subs, parts of deep-well pump, etc.
The flat bottom and concave junk mill milling the fishes with the effect of drilling pressure by the YD alloy and anti-abrasive material on its bottom surface. The junk was carried out of well by the drilling fluid.
The taper mill is mainly used for restoring the deformational fish’s top or restoring the crimping and burrs during drilling and clean the mineral crystallization and other hard stuff on the well to resume bore size.