Head Punch with Percussion Drilling System comprising such a Drill Head and a method for Drilling a Borehole

摘要

A perforated head with Percussion Drilling a Subterranean formation. The Drill Head has a central longitudinal axis and is operated by a Percussion axial Movement along the axis and rotate around the Shaft.The Drill Head includes: a Plurality of Blades protruding from the head Drill; a Plurality of flow channels arranged along the drill Head In radial direction substantially, forming, between two adjacent sheets, flow channels are short; Workers placed in line on the first end of at least one of the leaves.The same or a close distance with respect to the direction of Movement of rotation adjacent to the flow Channel which is associated to the flow run through the same, thereby Eliminating the Cutting debris that ACCUMULATE in the anterior portion of the line cutters; and More of these cutters cutters are described; axial;With respect to the direction of rotation Movement in the back position with respect to the line of cutters and its associated Shear Flow Channel.