Wells – Valves – closures or changeable restrictors
Reexamination Certificate
2006-02-03
2010-10-26
Bomar, Shane (Department: 3676)
Wells
Valves, closures or changeable restrictors
C166S373000
Reexamination Certificate
active
07819194
ABSTRACT:
A flow regulator for use in a subterranean well. A well flow regulating system includes a flow regulator for regulating a flow rate of a fluid in a wellbore, the flow rate remaining substantially constant while a differential pressure across the flow regulator varies. The flow regulator is adjustable while positioned within the wellbore to change the flow rate. Another well flow regulating system includes a flow regulator for maintaining a desired fluid flow rate between an annulus and an interior passage of a tubular string. The flow regulator includes a closure device, a biasing device which applies a biasing force to the closure device, and a flow restriction which operates to apply a restriction force to the closure device. The biasing force and/or the restriction force is adjustable downhole to change the flow rate.
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Bomar Shane
Fuller Robert E
Halliburton Energy Service,s Inc.
Smith Marlin R.
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