发明名称 Modified Cutters
摘要 A modified cutting element that includes a base portion, an ultrahard layer disposed on said base portion, and at least one modified region disposed adjacent to a cutting face of the cutter is described. In certain applications, the ultrahard layer comprises thermally stable polycrystalline diamond.
申请公布号 US2008006448(A1) 申请公布日期 2008.01.10
申请号 US20070855770 申请日期 2007.09.14
申请人 SMITH INTERNATIONAL, INC. 发明人 ZHANG YOUHE;SHEN YUELIN
分类号 E21B10/46;E21B7/00;E21B10/56;E21B10/567;E21B10/573 主分类号 E21B10/46
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