Concentric cutting drilling tool device for accident pipe in drill hole

The utility model discloses a concentric type cutting drilling tool device for an accident pipe in a drill hole. The concentric type cutting drilling tool device comprises a concentric inner guide pipe, a drill rod connector, an outer shell and a centralizing ring. The concentric guide pipe comprises a conical section and a cylindrical section which are of an integrally-formed structure. The drillrod connector comprises a conical connecting section and a reducing joint connecting section, the conical connecting section is in threaded connection with the conical section, and the shape of the inner wall of the conical connecting section is matched with that of the conical section; the outer shell is shorter than the cylindrical section, the cylindrical section is nested in the outer shell and is in threaded connection with the outer shell, and a water hole and a centralizing ring are sequentially arranged at the non-nested part of the cylindrical section; the outer shell is formed by fixedly connecting an outer