OIL PRODUCTION SUBMERSIBLE PUMP SET Russian patent published in 2014 - IPC F04D13/10 F04D29/70 

FIELD: oil and gas industry.

SUBSTANCE: oil production submersible pump set contains a pump with a submersible electric motor, a solid particles centrifugal separator and a settling tank run in the hole. The solid particles centrifugal separator is placed downstream of the submersible electric motor with a possibility of torque transfer from the submersible motor shaft to the shaft of the solid particles centrifugal separator, at that the rotor of the centrifugal separator is surrounded by a fixed screw grate which pitch thread is opposite to the rotor rotation of the centrifugal separator. Inside the settling tank there is a pipe which upper end is placed downstream the solid particles centrifugal separator while its lower end is fully communicating with the well cavity. The lower pipe end is equipped with a nozzle, at that delivery of the rotor of the centrifugal pump exceeds the pump delivery per 20%.

EFFECT: improving operational reliability of the oil production pump set from a well with high concentration of suspended solid particles.

1 dwg