Downhole sucker rod pumps

摘要

The invention relates to oil and gas industry, particularly to technical means for lifting fluids from a well borehole rod pumps.; The object of the utility model is to ensure the reliability of the downhole sucker rod pump while improving resource productivity and quality of work produced.; The downhole pump comprises a cylinder rod with a suction valve and a piston disposed therein with a pressure valve, which is a tube with an internal thread at both ends and a cylindrical bore (peskosemnym element) of the plunger. According to the utility model peskosemny element is a spring bushing mounted on threaded inserts and arranged on the ends of the plunger, the diameter of the spring bushing and the plunger are made equal.; 1 SP f ly-2-yl.