发明名称 Drill bit with an impregnated cutting structure
摘要 A cutting structure and drill bit body that includes a plurality of encapsulated particles 38 dispersed in a first matrix material 44, the particles comprising: an abrasive grit 42 encapsulated within a shell 40, wherein the shell comprises a second matrix material different from the first matrix material. A method of forming the above structure by loading a plurality of the encapsulated particles and the first matrix into a mold and heating the encapsulated particles within the first matrix.
申请公布号 GB2450177(A) 申请公布日期 2008.12.17
申请号 GB20070014147 申请日期 2007.07.19
申请人 SMITH INTERNATIONAL, INC. 发明人 GREGORY T LOCKWOOD
分类号 E21B10/46 主分类号 E21B10/46
代理机构 代理人
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