Downhole Milling Shoes for Debris Milling

Milling shoes can be divided into three kind: flat-bottom (or concave-bottom) milling shoe, guide mill shoe and come mill shoe according to its structure and shape At the milling surface, the carbide particles are built up by welding, which plays a part of self-milling. It is used to mill the fallen substances, such as bolt, nut, tooth wheel, slip dog, fittings for deep-well pump, etc.