Patent ID: 6732803
Filing Date: 2004-05-11
Classification: E21B

Abstract:
An apparatus for use in completing a subterranean zone penetrated by a wellbore, comprising:a housing member having a longitudinal bore and an inner diameter; a valve member disposed within the housing member and movable between an open position and a closed position; a sliding sleeve disposed within the housing member having a longitudinal bore, movable between an upper position and a lower position, and having a seating element on which the valve member can seat; wherein when the sliding sleeve is in the lower position, the valve member is held in the open position and communication is established between the longitudinal bore of the housing above the valve member and the longitudinal bore of the housing below the valve member; and wherein when the sliding sleeve is in the upper position, the valve member is held in the closed position by the sliding sleeve and communication between the longitudinal bore of the housing above the valve member and the longitudinal bore of the housing below the valve member is restricted.