ROD ROTARY MECHANISM OF SUCKER ROD STRING OF DEEP WELL PUMPING UNIT

摘要

FIELD: oil production from wells by deep- well pumping unit, particularly, device for rotation of sucker rod string through some angle. SUBSTANCE: rod rotary mechanism ensure rotation through some angle of sucker rods with scrapers attached to them. EFFECT: higher efficiency of cleaning of operating well from asphalt-resin-paraffin accumulations in wells by means of scrapers. 4 cl, 12 dwg