Patent ID: 8113289

Claim:
A system for regulating the flow of fluid through a progressing cavity motor having a stator and a rotor, the motor positioned downhole within a tubular in a well, comprising: a radial gap between the tubular and the stator forming an annulus passageway radially outward of the motor, and a progressing cavity between the rotor and the stator forming a central passageway fluidly in parallel with the annulus passageway and rotating the rotor with respect to the stator; an annulus restriction for restricting flow through the annulus passageway; an annular biasing member for biasing the annulus restriction toward a closed position, and fluid flow in the annulus passageway creating an opening force on the annulus restriction; a central restriction for restricting flow through the central passageway; and a central biasing member for biasing the central restriction toward an open position, and fluid flow in the central passageway exerting a closing force on the central restriction.