发明名称 |
CUTTER HAVING SHAPED WORKING SURFACE WITH VARYING EDGE CHAMFER |
摘要 |
A cutter for a drill bit used for drilling wells in a geological formation includes an ultra hard working surface and a chamfer along an edge of the working surface, wherein the chamfer has a varied geometry along the edge. The average geometry of the chamfer varies with cutting depth. A depression in the shaped working surface is oriented with the varied chamfer and facilitates forming the varied chamfer. A non-planar interface has depressions oriented with depressions in the shaped working surface to provide support to loads on the working surface of the cutter when used.
|
申请公布号 |
US2011031030(A1) |
申请公布日期 |
2011.02.10 |
申请号 |
US20100790697 |
申请日期 |
2010.05.28 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
SHEN YUELIN;ZHANG YOUHE;KRISTIANSEN STEFFEN S. |
分类号 |
E21B10/567;E21B10/26;E21B10/36;E21B10/46;E21B10/56;E21B10/573 |
主分类号 |
E21B10/567 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|