SELF-REGULATING FLOW CONTROL DEVICE

摘要

A self-regulating flow control device for controlling the flow of injected fluid into a subsea well or flowline via a tree, manifold, or other access point on the subsea infrastructure by responding to the injection pressure being applied to prevent the conduit from collapsing. An embodiment of the self-regulating flow control device includes a housing having a first and second through bore, a piston moveable in the through bore, and a biasing member. When in an unactuated position, the biasing member biases the piston isolating the first through bore from the second through bore, and when in an actuated position, a pressure overcomes the biasing member to move the piston and expose the first through bore to the second through bore. The self-regulating control flow device prevents a vacuum from being drawn into the conduit system below during sudden decreases in uphole pressure by blocking or closing flow paths in the housing.

主权项

1. A self-regulating flow control device comprising:
a main body comprising a through bore; a cavity intersecting the through bore and angularly offset from the through bore; a piston comprising an aperture; and a biasing member; wherein, in an unactuated position, the biasing member biases the piston such that the aperture is enclosed in the cavity; wherein, in an actuated position, a pressure overcomes the biasing member to move the aperture into the through bore.