Focusing on the highly deviated and horizontal wells, Shengji provides a new type pump, which solves the conventional tubing pump problems. In this pump, the standing valve cage chamber uses guide rib structure. Even in the horizontal level, it can also guarantee a close of the valve ball while reducing the start and close time of the ball. Thus, it can increase a fullness ratio of the fluid in the chamber and reduce the discharge lost.

The plunger travelling valve cage uses a mechanical force open and start structure. The plunger assembly consists of double plungers and improve the stability of travelling valve. The barrel is usually a heavy wall barrel, suspension structure increases the rigidity and reduce the bent of barrel.

All these designs ensure the pump works normally during high deviated well, even in the horizontal well. This type pump has been widely used in horizontal wells now.