A wash drilling tool for coal seam gas -oil pipe

The utility model belongs to the technical field of oil pipe washs, especially, relate to a wash drilling tool for coal seam gas -oil pipe. Including bit body and metal cord, wherein be equipped witha plurality of radial hole along the axial on the bit body, all to insert in each radial hole and be equipped with a metal cord, stretch out in by radial hole at each metal cord's both ends for the drilling is carried out in scale deposit to coal seam gas -oil inside pipe wall. Metal cord is wire rope, wire rope reveal in the both ends in the radial hole outside isometric, and buckle along reverse. The bit body one end continuous with drilling through the machine drill pole is equipped with the centre bore along the axial, and the medial extremity of centre bore is the blind end, is equipped with a plurality of spray rinsing holes of having a perfect understanding with the centre bore along the axial on the outer circumference of bit body. The utility model discloses simple structure is practical, improves 20~70 t