Forced mechanical valve pump is suitable for heavy oil wells and oil wells with high oil-gas ratio after steam injection. The pump has changed the valve ball and valve seat structure of the original swimming valve that relies on pressure difference to open and close, adopts the form of forced mechanical opening and closing, and relies on the action of mechanical force to open and close the swimming valve, which solves the problem of heavy oil pumping and valve ball delay. The problem of opening and closing, as well as the steam lock and general air lock of the thermal recovery pump. The pump greatly improves the volume efficiency and service life of the oil well, and is suitable for heavy oil wells with high viscosity ≤4000MPa. S and sand content <0.2%.

Structural features and structural principles:
The pump is mainly composed of three parts: pump barrel assembly, fixed valve assembly and plunger assembly.

How it works: During the up stroke, the mechanical valve is closed and the pressure in the lower chamber of the pump barrel is reduced.
Oil suction: During the downstroke, the mechanical valve opens in time under the action of the sucker rod force and the friction between the plunger and the pump barrel, and then pushes the plunger down to complete the discharge process.