Have the super wear-resisting cutting element that strengthens durability and strengthen wear-out life, and the drilling equipment that so is equipped with

摘要

A kind of cutting element that when the Drilling subsurface formations, uses.Cutting element comprises super wear-resisting that is installed on the support base.Super wear-resisting surface that comprises two-dimentional cutting face and comprise chamfering, described two-dimentional cutting face has along the cutting edge of its at least a portion periphery, described chamfering near the periphery cutting edge with respect to the longitudinal axis of described cutting element with forward and extend inwardly to and be not more than selected depth greater than the first about 45 ° acute angle.Chamfering is an arc or smooth, and has sufficient to guarantee and be held in place in the chamfering enveloping surface with the size outside the interior chamfering inner boundary at the abrasive plane that cutting element produced between the operating period, and is small enough to keep the high-rate cutting performance of cutting element.The invention also discloses the drill bit and the drilling tool of carrying cutting element.