Subsurface drive (submersible electric motor) serves as a converter of electric power to mechanical power of pump rotation. Subsurface drive operates in deep, deviated and horizontal wells. It is also efficient for production of high viscosity oil with high solids content. The main advantages of submersible electric motor are: absence of sucker rods parting and unwinding, exclusion of probability of improper fitting of rotor and stator, lower power consumption.