ASSEMBLY FOR EXTRACTING CRUDE OIL

摘要

The proposed assembly comprises: a hydraulic cylinder (1) mounted with the aid of the head (2) above the mouth of the well (3); a damping device in the form of a spring-loaded sleeve (7) which co-operates with the piston (4) of the hydraulic cylinder (1); and a well head sucker rod pump. The rod (5) of the piston (4) of the hydraulic cylinder (1) is kinematically connected to the rods (9) of the well head pump, while the cylinder seal is in the form of a sealing block (8) mounted in the head (2) in such a way that one of its parts is in contact with the hydraulic cylinder (1) and the other is in contact with the well (3).