Tubing hanger saddle valve

摘要

A tubing hanger incorporates a flow control valve that is ordinarily found in a horizontal christmas tree. A branch passage forming a production fluid outlet has a mouth that intersects with a vertical production bore. A valve closure element in the form of a rotatable sleeve or saddle is disposed in the bore for co-operation with a seat disposed in the branch passage. Rotation of the sleeve, e.g. by means of a shaft extending through a crown plug, brings a hole into or out of alignment with the seat to control production fluid flow. In other embodiments, the sleeve is axially movable.