Debris free valve apparatus

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 34/06 (2006.01) E21B 34/10 (2006.01) E21B 34/14 (2006.01) E21B 34/00 (2006.01)

Patent

CA 2364701

The present invention provides an apparatus for use in completing a subterranean zone penetrated by a wellbore. One aspect of the invention comprises a housing member with a longitudinal bore and a valve member located within the housing member that is movable between open and closed positions. A sliding sleeve having a longitudinal bore is disposed within the housing member and can move between an upper position and a lower position. Attached to the sliding sleeve is a seating element where the valve member can seat. 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 and below the valve member. When the sliding sleeve is in the upper position, the valve member is held in the closed position and communication between the longitudinal bore of the housing above and below the valve member is restricted.

La présente invention fournit un équipement pour la complétion d'une zone souterraine pénétrée par un puits de forage. Un aspect de cette invention comporte un élément de confinement (bâti) avec un alésage longitudinal et un clapet situé dans le bâti, pouvant passer de la position ouverte à la position fermée. Un manchon coulissant à alésage longitudinal occupe l'intérieur du bâti et est mobile, d'une position haute à une position basse. Un siège, fixé au manchon coulissant, permet au clapet d'être placé sur ce siège. Lorsque le manchon coulissant est en position basse, le clapet est maintenu en position ouverte et il s'établit une communication entre l'alésage longitudinal du bâti au-dessus et au-dessous du clapet. Lorsque le manchon coulissant est en position haute, le clapet est maintenu en position fermée, et la communication entre l'alésage longitudinal du bâti au-dessus et au-dessous du clapet est limitée.

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