Device for annular well isolation

Details Device for annular well isolation Device for annular well isolation

E - Fixed Constructions

21

B

E21B 33/136 (2006.01) E21B 33/12 (2006.01) E21B 33/126 (2006.01)

Patent

CA 2360851

Device for annular isolation in oil/gas wells comprising a production tube, the production tube comprises coaxially positioned, cylindrical sleeve (5) having in one end an at least partially radially directed opening slot (2), said sleeve including a cylindric sealing crown (1) coupled in one end to a release mechanism (3, 4) adapted to push the sealing crown (1) out through the opening, said sealing crown (1) in its other end being expandable in the tangential direction.

L'invention concerne un dispositif d'isolation annulaire pour puits de pétrole/gaz pourvu d'un tube de production comprenant un manchon cylindrique (5) placé de manière coaxiale. Ledit manchon (5) comporte, à une extrémité, une fente d'ouverture (2) dirigée au moins en partie radialement, ainsi qu'une couronne cylindrique d'étanchéité (1) couplée, à une extrémité, à un mécanisme de dégagement (3, 4) conçu pour pousser la couronne cylindrique d'étanchéité (1) à l'extérieur par l'ouverture. A son autre extrémité, la couronne (1) est extensible dans sa direction tangentielle.

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