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公开(公告)号:US09212523B2
公开(公告)日:2015-12-15
申请号:US13309389
申请日:2011-12-01
申请人: Zhou Yong , Weiqi Yin , Bradley J. Head
发明人: Zhou Yong , Weiqi Yin , Bradley J. Head
摘要: A drill bit configured for boring holes or wells into the earth, the drill bit having a face and a plurality of zones, the drill bit having geometrically sharp inserts located in an inner zone and non-geometrically sharp inserts located in an outer zone.
摘要翻译: 钻头,其构造成用于将孔或井钻入地球,所述钻头具有面和多个区域,所述钻头具有位于内部区域中的几何锋利的刀片和位于外部区域中的非几何锋利的刀片。
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公开(公告)号:US20130140093A1
公开(公告)日:2013-06-06
申请号:US13309389
申请日:2011-12-01
申请人: Yong Zhou , Weiqi Yin , Bradley J. Head
发明人: Yong Zhou , Weiqi Yin , Bradley J. Head
IPC分类号: E21B10/00
摘要: A drill bit configured for boring holes or wells into the earth, the drill bit having a face and a plurality of zones, the drill bit having geometrically sharp inserts located in an inner zone and non-geometrically sharp inserts located in an outer zone.
摘要翻译: 钻头,其构造成用于将孔或井钻入地球,所述钻头具有面和多个区域,所述钻头具有位于内部区域中的几何锋利的刀片和位于外部区域中的非几何锋利的刀片。
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