Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2011-03-29
2011-03-29
Stephenson, Daniel P (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S376000, C166S386000, C166S317000, C166S320000
Reexamination Certificate
active
07913765
ABSTRACT:
A device or system for controlling fluid flow in a well includes a flow restriction member that transitions from a first effective density to a second effective density in response to a change in composition of the flowing fluid. The flow restriction member may increase in effective density as the water cut of the flowing fluid increases and/or disintegrate when exposed to a selected fluid in the flowing fluid. The flow restriction member may be formed of a water-absorbing material and/or a porous material. The pores may be water permeable but not oil permeable. A method for producing fluid from a subterranean formation includes controlling a flow of fluid into a wellbore tubular with a flow restriction member. The method may include reducing a flow of water into the wellbore tubular when a percentage of water in the flowing fluid reaches a predetermined value.
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Coronado Martin P.
Crow Stephen L.
Baker Hughes Incorporated
Hutchins Cathleen R
Mossman Kumar & Tyler PC
Stephenson Daniel P
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