Through tubing progressing cavity pump

Details Through tubing progressing cavity pump Through tubing progressing cavity pump

1984-06-19

1986-06-03

Novosad, Stephen J.

Wells

Processes

Producing the well

418 48, E21B 4300, F04C 106

Patent

active

045924279

ABSTRACT:
A progressing cavity pump has features that allow it to be installed through tubing in a well. The pump has a stator and a helical rotor located in the stator. The rotor is rotated by a string of sucker rods that extends through the tubing to the surface. The tubing has a tubular seating member located at the lower end. A seating member is secured also to the lower end of the stator for reception in the seating member of the tubing. The seating members cooperate to prevent rotation of the stator and sealing. A rotor nipple extends above the stator and contains a drive rod which is connected between the sucker rod and the rotor. The rotor nipple has a restraining collar, and the drive rod has couplings located above and below the collar and spaced apart a selected distance to allow some vertical movement of the rotor with respect to the stator.

REFERENCES:
patent: 2739650 (1956-03-01), Hill
patent: 3347169 (1967-10-01), Cronin, Jr. et al.

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