Uniform Thickness of Rubber Bushing in Screw Drill and Its Application

Foreign-site practice shows that the new screw drill which has uniform thickness of rubber bushing in the screw drill has a high prospect.The basic components structure of the screw drill,and the difference between an ordinary screw drill structure and its technical advantages were described,and the effect of field application was analyzed.The application results show that compared with ordinary screw drill,the new screw drill have large torque,long life,high temperature,etc.,in the deep wells,high-density drilling wells and small radius horizontal well construction process,with great technological advantage.Conduct in-depth study of the instrument has great value to improve the strength of oil drilling equipment.