1.Increased rate of penetration. 2.Better hole deviation control. 3.Reduction in drill string failure rate. 4.Reduction in wear and tear of the swivel, Kelly, and rotary drives. 5.Reduction in fuel cost, since compared to rotary drilling, less energy is required to power a downhole motor. 6.Big torque, high effective, wide flow rate range, running stable and long using time. 7.API Spec. Standard
