A back reaming tool is disclosed which includes a tool body adapted to be coupled to a drill string, and at least cutting structure mounted to a leg and having cutting elements disposed thereon. The leg is removably coupled to the tool body.
申请公布号
US7137460(B2)
申请公布日期
2006.11.21
申请号
US20040803171
申请日期
2004.03.17
申请人
SMITH INTERNATIONAL, INC.
发明人
SLAUGHTER, JR. ROBERT H.;CARIVEAU PETER T.;SHOTTON VINCENT W.
