A mill for milling a window through metal casing in a well bore that includes a body having a plurality of blades; a plurality of cylindrically bodied cutting elements on said blades; and a plurality of diamond enhanced elements having a non-planar diamond working surface on said blades; wherein said cutting elements initiate cutting into said casing and mill said window into said well bore.
申请公布号
WO2010129468(A3)
申请公布日期
2011.03.03
申请号
WO2010US33386
申请日期
2010.05.03
申请人
SMITH INTERNATIONAL, INC.;DEWEY, CHARLES, H.;DESAI, PRAFUL, C.