WELLBORE FLOW CONTROL DEVICE

摘要

A device for regulating fluid flow in a well is provided. The device may include: a body member having a central bore extending therethrough, at leas t one flow port, and a first valve seat; a sleeve member movably disposed with in the central bore of the body member, and having a second valve seat adapted for cooperable sealing engagement with the first valve seat; means for selectively controlling movement of the sleeve member to regulate fluid flow through the at least one flow port; and conduit means for transmitting energ y to the movement means. The conduit means may include a first and a second hydraulic control line, a single hydraulic control line, or a single electrical conductor. The movement means may include: a piston connected to the sleeve member and movable in response to a combination of hydraulic flui d, pressurized gas, spring force, and/or annulus pressure; or an electric motor connected to the sleeve member.