Reverse moineau motor

Details Reverse moineau motor Reverse moineau motor

1997-03-14

2000-02-01

Vrablik, John J.

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

418152, 418153, 418178, F03C 208

Patent

active

060195835

ABSTRACT:
A downhole submersible fluid pump having a progressive cavity motor section driving a rotary pump such as a centrifugal or axial pump. In the motor section an inner helical member is fixed relative to an outer rotatable member having helical threads. By forcing power fluid into the motor chamber between the inner and outer member causes the outer member to rotate relative to the fixed inner member. This rotary motion is transmitted to a rotary member of a centrifugal pump, for example, drawing fluids from the subterranean formation upwardly as produced fluids.

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