Annular barrier system

Abstract

The present invention relates to an annular barrier system for completing a well with a well tubular metal structure, comprising the well tubular metal structure comprising a first annular barrier and a second annular barrier, each annular barrier being introduced and set in the well to abut a wall of the well providing a confined space having a confined pressure between the wall, part of the well tubular metal structure, the first annular barrier and the second annular barrier, so that the first annular barrier isolates the confined space from a first annulus having a first pressure and the second annular barrier isolates the confined space from a second annulus having a second pressure, wherein the annular barrier system comprises a pressure equalising unit having a first position in which the first annulus is in fluid communication with the confined space and a second position in which the second annulus is in fluid communication with the confined space, in the first position the second pressure is higher than the first pressure, and in the second position the first pressure is higher than the second pressure.

Dependencies are inferred from the claim text.