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US 2013/0008513 A1Published application
Flow control device and flow control method
AssigneeStatoil Petroleum AS
InventorsHaavard Aakre, Vidar Mathiesen, Björnar Werswick
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AssigneeStatoil Petroleum AS
InventorsHaavard Aakre, Vidar Mathiesen, Björnar Werswick
Estimating the term…
Disclosed herein is an improved method for reversed flow through a self-adjustable (autonomous) valve or flow control device (2), comprising the step of providing an overpressure on the side of the valve (2) opposite of the side of the inlet (10) exceeding a predetermined biasing force of the resilient member (24) causing lifting of the inner body part (4a) within the outer body part (4b) against said biasing force from a first position of fluid flow between an inner and an outer side of the valve (2) via the flow path (11) and to a second position of reversed fluid flow between said inner and outer side through the second flow path (25). An improved self-adjustable (autonomous) valve or flow control device (2) and use of said improved valve or flow control device are also disclosed.
1-15. (canceled)
A flow control device, comprising:
A flow control method for use with a flow control device having a first flow path to allow fluid to flow from an inlet port provided on an inlet side of the device to an outlet port provided on an outlet side of the device, and a closure element arranged to prevent fluid flow along the first fluid path in a direction from the outlet port to the inlet port, the method comprising the step of providing or using an arrangement to open a second fluid path, different along at least part of its length from the first fluid path, in dependence upon the pressure of fluid at the outlet side, the second fluid path allowing fluid to flow from a first relief port provided on the outlet side to a second relief port provided on the inlet side.
Dependencies are inferred from the claim text.