Steven Taitinger

Matthew McCarthy

An apparatus for selectably sealing an interior bore of a completion string comprises an elongate body and has connectors for connecting the body in line with a completion string. An interior wall of the apparatus forms a bore through the elongate body. A rupturable barrier member fastened to and bridging the bore is deformable so as to permit passage therepast after being ruptured. The barrier member includes at a weakened path defining a leaf extending from a hinge portion narrower than the widest portion of the leaf.

Barrier member

An apparatus for selectively opening a passage through a downhole casing comprises an elongate cylindrical housing defining a central bore therein and having at least one passage extending therethrough between the central bore and an exterior of the housing, the housing being configured to be located in line within a downhole casing, a ball seat slidably located within the central bore so as to be operable to selectively cover or uncover the at least one passage and a sealing sleeve slidably located within the central bore between an open and closed position wherein the sealing sleeve valve covers the at least one passage in the closed position and uncovers the at least one passage in the open position.

Growing community of inventors

Calgary, Canada

Steven Taitinger