A through-the-oil-pipe electric submersible screw pump

Abstract

The invention discloses a through-tubing bailing type electric submersible screw pump, which belongs to a bailing type electric submersible screw pump in the technical field of screw pump equipment. The invention aims to provide an electric submersible screw pump equipment for realizing separate maintenance of the screw pump. The technical scheme comprises an oil pipe delivery tool group and a steel wire delivery tool group. The oil pipe delivery tool group comprises a centralizer, a sensor, a motor, a reducer and a receiver connected in sequence from bottom to top. The steel wire delivery tool group comprises a continuous oil pipe, a continuous rod and a screw pump connected in sequence from top to bottom. The screw pump is placed inside the receiver. A seating joint is arranged at the bottom of the screw pump. The upper end of the seating joint is connected to the pump main shaft. The lower end of the seating joint is clamped and connected to the bottom of the receiver. The receiver can drive the seating joint to rotate. The invention provides a through-tubing bailing type electric submersible screw pump, which greatly saves the labor time for maintenance and repair, and saves the maintenance cost of equipment and labor.

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