Convertible seal

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/12 (2006.01) E21B 33/124 (2006.01) E21B 33/126 (2006.01) E21B 34/08 (2006.01)

Patent

CA 2618693

A method and apparatus for sealing a wellbore is described herein. A convertible seal includes a sealing element and a valve. The sealing element is in fluid communication with the valve and fluidly blocks a bore of the convertible seal. The sealing element prevents fluid from flowing through the bore until desired. When desired, the sealing element is removed to allow fluid to flow through the bore. Fluid flow in the bore is controlled by the valve. As a result, the convertible seal has been converted to a flow control seal.

La présente divulgation décrit une méthode et un dispositif pour obturer un puits de forage. Un obturateur convertible comprend un élément d'obturation et une vanne. L'élément d'obturation est en communication fluide avec la vanne et il bloque de manière fluide un alésage d'obturateur convertible. L'élément d'obturation empêche le fluide de circuler à travers le trou de forage, selon les besoins. Au moment voulu, ledit élément d'obturation est ôté pour permettre au fluide de circuler à travers le trou de forage. Le débit du fluide dans le trou de forage est régulé par la vanne. Il en résulte que l'obturateur convertible est alors converti en obturateur à régulation de débit.

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