Submersible plunger pump with a transmission-and-nut ROLLING LIFT gas-liquid mixture from oil wells

摘要

The invention relates to oil and gas equipment and can be used for lifting the liquid mixture with a large depth. Installation immersion plunger pump for lifting fluids from great depths comprising a housing, a submersible electric motor, a drive shaft which is connected with the screw a screw-nut rolling moving within the housing and connected to the plunger rod, which moves in the piston pump cylinder, the piston rod is sealed in the housing and it is associated with a nut by rolling a cylindrical hollow shaft, and the female screw included with it in the sliding joint, and the inner cavity of the body filled with barrier oil. The plunger pump comprises a delivery valve and a suction valve disposed at the plunger head, and a cavity formed therebetween through which the ejected gas-liquid mixture coming from the annulus into the plunger pump through the receiving grids installed in the walls of the cylinder of the plunger pump. The valve motor connected to a control station comprising a controller with embedded software performing switching the rotation direction of the motor. As a screw-nut rolling using roller screw or a ball screw. The proposed utility model enables effective rise-liquid mixture from deep oil reservoirs while ensuring reliability of design and reduction of energy consumption