Patent ID: 6702013
Filing Date: 2004-03-09
Classification: E21B,F16K,Y10T

Abstract:
In combination with a flow completion system comprising a tubing spool which is connected above a wellhead housing and a tubing hanger which is supported in the tubing spool and which includes an axial production bore and at least two conduits that each extend from the bottom of the tubing hanger to either the top or the outer diameter of the tubing hanger, the improvement comprising a gate valve assembly which comprises:an elongated body having a longitudinal bore extending therethrough; a plurality of gates slidably disposed in the longitudinal bore across respective flow passages which each extend laterally through the body between corresponding inlet and outlet ports; each gate being movable between an open position wherein an opening in the gate is aligned with its respective flow passage and a closed position wherein the opening is offset from its respective flow passage; actuator means for moving the gates simultaneously between a first position, wherein at least one of the gates is in its open position, and a second position, wherein the at least one gate is in its closed position; and means connected to the bottom of the tubing hanger for providing communication between the conduits in the tubing hanger and the corresponding inlet ports in the gate valve assembly.