| 摘要 |
The annular barrier (1) comprisies a tubular metal part (7) for mounting as part of a well tubular structure (3), an expandable sleeve (8) surrounding the tubular metal part and having an inner face facing the tubular metal part and an outer face facing the inside wall of the borehole, each end of the expandable sleeve being connected with the tubular metal part, and an annular space (15) between the inner face of the expandable sleeve and the tubular metal part, wherein the tubular part and the inner face of the expandable sleeve substantially hermetically enclose the annular space, the annular space comprising a compound (16) adapted to expand the annular space, and wherein the expandable sleeve comprises two first sections (21) abutting the ends (12, 13) of the expandable sleeve and a second section (22) between the first sections, the first section of the expandable sleeve has a first inner diameter (DS1), and the second section of the expandable sleeve has a second inner diameter (DS2) which is larger than the first inner diameter, or the first sections have a first thickness which is larger than a second thickness of the second section. |
