Patent ID: 9534470
Date: 2017-01-03
CPC Classifications: E21B

Claim:
1. A self-adjustable (autonomous) valve or flow control device for controlling the flow of fluid from a reservoir and into a production pipe of a well in an oil and/or gas reservoir where the production pipe includes a drainage pipe comprising at least two sections including one or more inflow control devices, between an inlet port on an inlet side to at least one outlet port on an outlet side of the flow control device, the self-adjustable valve comprising: a freely movable valve body arranged to move by exploiting the Bernoulli effect and located in a recess in the flow control device, said valve body having a first surface directly facing the inlet port and a second surface located remote from the inlet port; the inlet port is connected to the recess by a central aperture (opening); the valve is arranged to guide fluid to flow into the recess through the central aperture; and the valve is arranged to guide fluid to flow out of the recess radially across a first surface of the valve body, said first surface facing the central aperture, and past an outer peripheral surface of said valve body towards at least one outlet port, wherein the outlet port comprises multiple apertures connected to the recess and facing the outer peripheral surface of the valve body, the outlet port being arranged to guide fluid out of the recess radially, wherein the multiple apertures are at a location at or radially outside the outer peripheral surface of the valve body, and wherein the multiple apertures are each connected to the recess in the radial direction of the flow control device.