A back reaming tool is disclosed which includes a tool body adapted to be coupled to a drill string, and at least one roller cone rotatably mounted to a leg and having cutting elements disposed thereon. The leg is removably coupled to th e tool body. The at least one roller cone is open at only one axial end thereo f.
申请公布号
CA2371740(C)
申请公布日期
2006.04.18
申请号
CA20022371740
申请日期
2002.02.12
申请人
SMITH INTERNATIONAL, INC.
发明人
SLAUGHTER, ROBERT H., JR.;CARIVEAU, PETER T.;SHOTTON, VINCENT W.
