Patent ID: 9404335
Filing Date: 2016-08-02
CPC Classification: E21B

Claim Text:
1. An annular barrier system connected with a well head via a well tubular structure, comprising: a first annular barrier and a second annular barrier to be expanded in an annulus between the well tubular structure and an inside wall of a casing or a borehole downhole for providing zone isolation between a first zone and a second zone, each annular barrier comprising: the system further comprising a first flow line fluidly connecting the well head with the opening of the first annular barrier for supplying fluid to the opening for expanding the expandable sleeve, and the second connection part of the first annular barrier having a second opening and the second opening of the second connection part being fluidly connected with an opening arranged in the first connection part of the second annular barrier via a second flow line for expanding the expandable sleeve of the second annular barrier, the space of the expandable sleeve of the first annular barrier and the space of the expandable sleeve of the second annular barrier being directly fluidly connected via the second flow line, the second flow line being configured to allow fluid to pass directly from the space of the first annular barrier to the space of the second annular barrier, wherein a two-way valve is arranged in the second opening, the two-way valve being configured, at a predetermined pressure, to disconnect communication to the second annular barrier and to open fluid communication to an annular space between the annular barriers in their expanded condition to pressurise the annular space.