Subsea pass thru switching system

A system usable with a subsea well and subsea equipment for completing the well for managing control fluids, wherein the system comprises:

• a. a tubing hanger;
• and
• b. a coupling located in the tubing hanger, wherein the coupling is adapted to control deployment of subsea control fluids into subsea well completing equipment, wherein the coupling comprises:
• i. 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 a 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;
• ii. 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;
• iii. a retainer comprising a retainer seal for sealing the sloped end against the second inlet port;
• iv. a retaining sleeve for holding the coupling body against the tubing hanger;
• v. a first circumferential seal located between the tubing hanger running tool and the tubing hanger on one end of the tubing hanger;
• and
• vi. a second circumferential seal located between the tubing hanger running tool and the tubing hanger on the other end of the tubing hanger, and wherein the hydraulic poppet is adapted to move the perimeter seals to open and close the first inlet port and move the retainer seal to open and close the second inlet port.

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 an electrical control element, wherein the actuator opens and closes a second inlet port from the tubing hanger responsive to input from the electrical control element;
• 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, and wherein the hydraulic poppet is adapted to move the perimeter seals to open and close the first inlet port and move the retainer seal to open and close the second inlet port.