Bottom tag for progressing cavity pump rotor with coiled...

Details Bottom tag for progressing cavity pump rotor with coiled... Bottom tag for progressing cavity pump rotor with coiled...

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 53/16 (2006.01) F04B 47/02 (2006.01) F04C 5/00 (2006.01) F04D 3/02 (2006.01) F04D 29/52 (2006.01)

Patent

CA 2716821

The bottom tag of the present invention comprises a tapered coupling that is secured below the stator housing. In one embodiment the smaller diameter of the coupling is smaller than the rotor minor diameter. In another embodiment the smallest diameter in the coupling tag is smaller than the major diameter of the rotor and longer than one half the rotor pitch, so that no more than one half of a rotor pitch can enter. In either case there are optional side openings to aid flow during operation. The taper in the coupling tag guides coiled tubing through when the rotor is removed to clean up the wellbore below by jetting through the coiled tubing. The taper can also guide measurement equipment through.

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