| 摘要 |
The present invention relates to an annular barrier (1) to be expanded in an annulus between a well tubular structure (300) and an inside wall (101) of a borehole (100) downhole for providing zone isolation between a first zone (102) and a second zone (103) of the borehole, the annular barrier having an axial extension (22) and comprising a metal tubular part (2), the metal tubular part being a separate tubular part or a casing part for mounting a part of the well tubular structure, an expandable sleeve (3) surrounding the metal tubular part, each end (31,32) of the expandable sleeve being connected with the tubular part by means of a separate metal connection part (12), the expandable sleeve being made of metal and having a sleeve length and extending along the axial extension, an annual barrier space between the tubular part and the expandable sleeve, an expansion opening (9) in the tubular part through which fluid may enter into the space (30) in order to expand the expandable metal sleeve, wherein a retainer ring (13) is fastened to the metal tubular part and increases an outer diameter (ODt) of the tubular part, the connection part having a first part (26) and a second part (27), the second part overlapping the expandable sleeve for pressing the end of the expandable sleeve towards the tubular part, and the first part having a retainer groove (14), the retainer ring engaging the groove for preventing the connection part from moving in the axial extension when the expandable sleeve is expanded. |
