DOWNHOLE FLOW CONTROL DEVICE

摘要

A downhole flow control device (22) comprises a tubular member (28) to be located within a well bore and having a flow port (24) formed through a wail thereof to provide fluid communication with the wellbore. The flow control device (22) further comprises a blocking arrangement (32) mounted in proximity to the flow port (24) and comprising a swellable material configured to swell upon exposure to a triggering fluid, wherein in an unswollen state the blocking arrangement (32) does not Interfere with the flow port (24) such that flow through the flow port is unrestricted by the blocking arrangement, and in a swollen state the blocking arrangement encroaches over the flow port to restrict flow therethrough.