Patent ID: 6776247
Filing Date: 2004-08-17
Classification: E21B

Abstract:
A drill string stabilizer tool including a body having an outer surface symmetrical about an axis of rotation, and a plurality of recesses extending inwardly from said outer surface;said recesses each including opposite recess surfaces which converge radially inwardly from said body outer surface toward the axis of rotation; a plurality of pad assemblies in respective said recesses, each said pad assembly including a wedge block with opposed outer side surfaces converging radially inwardly toward the axis of rotation which are complementarily abutted by said recess surfaces; each said wedge block having a relatively hard outer wear surface located radially outwardly from said body outer surface, and a bolt securing said wedge block to said body; characterized by the inwardly converging outer side surfaces of the wedge block converging at a predetermined angle and the inwardly converging opposite surfaces of said recesses complementarily at the same pre-determined angle whereby said angle is chosen to provide an interference fit between the contacting complementarily outer side surfaces of said wedge block and opposite surfaces of said recesses as the wedge block is drawn into the recess by said bolt to lock the wedge block in said recess.