Patent ID: 6729392
Filing Date: 2004-05-04
Classification: E21B

Abstract:
A tubing hanger for suspending a tubing string from a wellhead housing, comprising:a tubing hanger body including a production bore, an annulus bore fluidly isolated from the production bore and in fluid communication with an annulus about the tubing string, a valve open inlet port, and a valve closed inlet port, each of the inlet ports being fluidly isolated from both the production bore and the annulus bore and located at least partially within the tubing hanger body; a hydraulically actuated ball valve located in the annulus bore in the tubing hanger body and including a ball rotatable between opened and closed positions about an axis substantially stationary with respect to the tubing hanger body to selectively open and close the annulus bore; a fluid impermeable actuator sleeve surrounding and radially outward of an outer surface of the ball and connected to the ball, the actuator sleeve being moveable in response to fluid pressure in the valve open inlet port to move the ball to open, and moveable in response to fluid pressure in the valve closed inlet port to move the ball closed; an upper seat sleeve and a lower seat sleeve each substantially axially stationary with respect to the tubing hanger body and radially within the actuator sleeve; an upper seat actuator seal and a lower seat actuator seal each for sealing between a respective seat sleeve and the actuator sleeves; and the actuator sleeve being fluid impermeable between the upper seat actuator seal and the lower seat actuator seal to retain fluid pressure within the annulus bore and prevent fluid pressure in the annulus bore from moving the actuator sleeve.