A cutting element for a drill bit that includes an outer support element having at least a bottom portion and a side portion; and an inner rotatable cutting element, a portion of which is disposed in the outer support element, wherein the inner rotatable cutting element includes a substrate and a diamond cutting face having a thickness of at least 0.050 inches disposed on an upper surface of the substrate; and wherein a distance from an upper surface of the diamond cutting face to a bearing surface between the inner rotatable cutting element and the outer support element ranges from 0 to about 0.300 inches is disclosed.
申请公布号
US2013220707(A1)
申请公布日期
2013.08.29
申请号
US201313847825
申请日期
2013.03.20
申请人
SMITH INTERNATIONAL, INC.;SMITH INTERNATIONAL, INC.
发明人
SHEN YUELIN;ZHANG YOUHE;YONG ZHOU;YU JIAQING;KESHAVAN MADAPUSI K.