Annular pressure release sub

摘要

A method and apparatus for a pressure relief valve assembly. The valve assembly may be coupled to one or more casings and/or tubular members to control fluid communication therebetween. The valve assembly is a one-way valve assembly that relieves pressure within an annulus formed between adjacent casings and/or tubular members to prevent burst or collapse of the casings and/or tubular members. The valve assembly is resettable downhole.

主权项

1. A valve assembly, comprising:
a casing having a seat portion and a sidewall; a plug member at least partially disposed within the sidewall of the casing; and a biasing member operable to bias the plug member against the seat portion, wherein the biasing member includes one or more slots to facilitate fluid flow through the valve assembly, wherein the plug member is movable between a closed position where fluid communication is closed between a bore of the valve assembly and an annulus surrounding the valve assembly and an open position where fluid communication is open between the bore of the valve assembly and the annulus surrounding the valve assembly, and wherein the plug member is moved towards a bore of the casing to open fluid communication.