When drilling is still required drilling roller reamer drilling Manufacturers machine, mud pump, drill rigs and other conventional drilling equipment. Directional drilling construction, must rely on the direction finder to whipstocking tool orientation. And supporting the use of screw drill whipstocking tools bending joints, bend the outer tube and the eccentric mass. Screw Drill hole using directional drilling can improve quality, provide accurate geological data, saving footage, reduce costs, construction of the project can not solve many problems, so it is a special tool drilling project.
Screw drill life is generally 150 to 200 hours, the weak link is the stator temperature level low rubber,roller reamers drilling  bearing easily damaged. Stepping up research and development for the manufacture of stator temperature anti-wear elastic material and reliable bearing system, so that the screw drill working life has been significantly improved. And the development of low speed high torque screw to apply to drill deep and ultra-deep hole.