Patent ID: 7350580

Claim:
A coupling for switching control fluid from a tubing hanger to a downhole completion of a subsea well, wherein the coupling comprises: a. a coupling body comprising a sloped end connected to the tubing hanger, wherein the coupling body is located between a tubing hanger running tool and the downhole completion, wherein the coupling body further comprises: a hydraulic poppet for switching control fluid flow from a first flow path to a second flow path, wherein the hydraulic poppet comprises an isolation sleeve containing an actuator, wherein the actuator opens and closes a first inlet port from the tubing hanger running tool using a control element, and wherein the actuator opens and closes a second inlet port from the tubing hanger; b. at least two perimeter seals located between the tubing hanger and the coupling body, wherein the seals provide fluid isolation for the first flow path; c. a retainer comprising a retainer seal for sealing the sloped end against the second inlet port; d. a retaining sleeve for holding the coupling body against the tubing hanger; e. a first circumferential seal located between the tubing hanger running tool and the tubing hanger on one end of the tubing hanger; and f. a second circumferential seal located between the tubing hanger running tool and the tubing hanger on the other end of the tubing hanger, wherein the hydraulic poppet is adapted to move the perimeter seals independent of the pressure of the fluid flow to open and close the first inlet port and move the retainer seal to open and close the second inlet port.