Devices and methods for control flow of formation fluids respect to one or
more selected parameter relating to the wellbore fluid. In one
embodiment, a flow control device for controlling fluid flow into the
production tubular uses a flow restriction member that is actuated by a
character change of the formation fluid, such as liquid to gas or oil to
water. The flow restriction member can be sensitive to a change in
density of the formation fluid. The flow restriction member is passive,
self-regulating and does not need any power source or control signal to
control fluid flow. In one embodiment, the flow control device
automatically rotates into a predetermined orientation upon being
positioned in the wellbore. A seal disposed on the flow control devices
expands into sealing engagement with an enclosure after the flow control
device assumed the desired predetermined position.