Annular barrier and annular barrier system

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/12 (2006.01) E21B 33/128 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2746015

The present invention relates to an annular barrier system (100) for expanding an annular barrier (1) in an annulus (2) between a well tubular structure (3) and an inside wall (4) of a borehole downhole. The annular barrier system comprises an annular barrier (1) having a tubular part (5) for mounting as part of the well tubular structure (3), the annular barrier further comprising an expandable sleeve (6) surrounding the tubular part (5), at least one end (7) of the expandable sleeve being fastened in a fastening means (8) of a connection part (9) in the tubular part. The annular barrier system also comprises a tool (20) for expanding the expandable sleeve by letting a pressurised fluid through a passage (11, 21) in the tubular part into a space (12) between the expandable sleeve and the tubular part.

La présente invention porte sur un système de barrière annulaire (100) pour étendre une barrière annulaire (1) dans un espace annulaire (2) entre une structure tubulaire de puits (3) et une paroi intérieure (4) d'un fond de trou de forage. Le système de barrière annulaire comprend une barrière annulaire (1) ayant une partie tubulaire (5) pour le montage sous la forme d'une partie de la structure tubulaire de puits (3), la barrière annulaire comprenant en outre un manchon extensible (6) entourant la partie tubulaire (5), au moins une extrémité (7) du manchon extensible étant fixée dans un moyen de fixation (8) d'une partie de liaison (9) se trouvant dans la partie tubulaire. Le système de barrière annulaire comprend également un outil (20) pour étendre le manchon extensible par admission d'un fluide sous pression à travers un passage (11, 21) de la partie tubulaire jusque dans un espace (12) entre le manchon extensible et la partie tubulaire.

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