Polycrystalline diamond compact insert reaming tool

摘要

A reaming tool which includes a body having reaming blades affixed thereto at azimuthally spaced apart locations around a circumference of the body is shown and described. The reaming blades each have at least one cutter attached thereto at selected positions and orientations on each of the blades to minimize a net lateral force developed by the reaming tool. The tool includes a pilot hole conditioning section having a plurality of azimuthally spaced apart pilot blades affixed to the body longitudinally ahead of the reaming blades.