WELL SUCKER-ROD PUMP DRIVE

摘要

FIELD: powered oil production. SUBSTANCE: drive includes electric motor, double-threaded screw with nut kinematically linked with electric motor and rollers with tractive member. Nut is fitted for axial displacement over vertical guide and is directly connected with sucker-rod string underneath and with tubing string at the top by means of rod made in form of flexible coupling. Besides that, drive is provided with balancing counter-weight. EFFECT: enhanced operational reliability and efficiency. 1 dwg