公开(公告)号：US20190071932A1

公开(公告)日：2019-03-07

申请号：US16106286

申请日：2018-08-21

申请人： VAREL INTERNATIONAL IND., L.L.C.

发明人： Federico Bellin

IPC分类号： E21B10/567 ,  E21B10/16 ,  B22F3/15

摘要： A cutter for use with a drill bit includes: a substrate for mounting in a pocket of the drill bit and made from a cermet material; a cutting table made from a polycrystalline superhard material and mounted to the substrate; and a shield disposed in an outer recess of the substrate adjacent to the cutting table, mounted to the substrate, extending from the cutting table along a partial length of the substrate, and made from a composite material comprising the polycrystalline superhard material and a ceramic.