Flow regulator for downhole progressing cavity motor
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United States of America Patent
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Feb 14, 2012
Grant Date -
Jul 21, 2011
app pub date -
Jan 19, 2010
filing date -
Jan 19, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system for regulating the flow of fluid through a progressing cavity motor includes an annulus restriction (22) for restricting flow through the annulus passageway, and an annular biasing member (24) for biasing the annular restriction toward a closed position. Fluid flow in the annulus passageway creates an opening force on the annulus restriction. A central restriction (28) within the motor provides a restricted flow through the motor. A central biasing member (26) biases the central restriction toward an open position, with fluid flow in a central passageway exerting a closing force on the central restriction.
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