RSDS will control well path accurately, reduce torque and drag remarkably and improve hole cleaning condition obviously.The drilling practices of ERD will be more reliable if RSDS is used.

• 用旋转导向系统RSDS进行大位移井钻井，可望相当准确的控制井眼轨迹，大幅度减少钻柱所受的摩阻和扭矩，显著改善井眼的清洁状况。