Downhole sucker rod pumps for well development after treatment of bottomhole formation zone and water shutoff

摘要

The invention relates to oil and gas industry, namely to the devices for the development of production wells after different treatments bottomhole formation zone. The downhole pump rod for well development after the acid treatment and water shutoff comprises two interconnected cylinders, extension nipple, the plunger, and a receiving discharge valves, the closure member of the valve assembly, performing the function of receiving valve is formed as a truncated cone with elastic elastic cuff and is provided with guide and centering a fishing trunnion. Shut-off valve assembly is installed in the pump body after treatment bottomhole formation zone and processing the bottomhole formation zone. The lifting device or Ground drive (pumping unit, chain drive) can be used as a drive downhole sucker rod pump. 1 Fig.