Fluid handling – Line condition change responsive valves – Consistency responsive
Reexamination Certificate
2011-07-19
2011-07-19
Rivell, John (Department: 3753)
Fluid handling
Line condition change responsive valves
Consistency responsive
C137S455000, C138S043000
Reexamination Certificate
active
07980265
ABSTRACT:
A valve for downhole use has the ability to throttle between fully open and closed and is fully variable in positions in between. The valve is preferably responsive to flowing fluid viscosity and uses a three dimensional flow through restrictor in combination with a relatively movable cover. At a given flow, a higher viscosity fluid will create a greater relative movement and make it possible for flowing fluid to bypass more of the flow through member. In a particular application involving production from a zone, an array of such valves can allow more production where the viscosity is higher and less production where the viscosity drops due to, for example, water production.
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Gaudette Sean L.
Holmes Kevin C.
Baker Hughes Incorporated
Rivell John
Rosenblatt Steve
LandOfFree
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