TUBING HANGER WITH ANNULUS BORE

摘要

A flow completion apparatus for controlling the flow of fluid through a tubi ng string which extends into a well bore and defines a tubing annulus surrounding the tubing string, the flow completion apparatus comprising a wellhead housing which is installed at an upper end of the well bore; a tubing spool which is connecte d over the wellhead housing and which includes a central bore that extends axially therethrough, a production outlet which communicat es with the central bore, and an annulus passageway which communicates with the tubing annulus; a tubing hanger which is support ed in the central bore, is connected to an upper end of the tubing string, and includes a production bore which extends axial ly therethrough and a production passageway which communicates between the production bore and the production outlet; a first closure member which is positioned in the production bore above the production passageway; and a first annular seal which is positioned between the tubing hanger and the central bore above the production passageway; wherein the tubing spool further comprises a workover passageway which extends between the annulus passageway and a portion of the central bore that is located above t he first seal, and the tubing hanger further comprises an annulus bore which extends between the workover passageway and the top of the tubing hanger; whereby fluid communication between the tubing annulus and the top of the tubing hanger may be establish ed through the annulus passageway, the workover passageway and the annulus bore.