Annular barrier with bite connection

Abstract

The present invention relates to an annular barrier for providing zonal isolation in an annulus downhole between a well tubular metal structure and another well tubular metal structure or a wall of a borehole, comprising a tubular metal part with an outer part face, configured to be mounted as part of the well tubular metal structure an expandable metal sleeve surrounding the tubular metal part forming an expandable space there between, the expandable metal sleeve is configured to be expanded in a well downhole from a first outer diameter to a second outer diameter to abut against the well tubular metal structure or the wall of the borehole, the expandable metal sleeve having a first end, a second end, an outer face, and a longitudinal extension wherein the first end of the expandable metal sleeve has a mechanical connection, and wherein the first end of the expandable metal sleeve is connected to the tubular metal part by means of a bite connection comprising a cutting ring comprising an outer ring face having an inclined face and an inner ring face, having a first cutting edge configured to cut into the outer part face, and a connection ring with a mechanical connection engaging the mechanical connection of the expandable metal sleeve when the inclined face slides along a tapering face of the expandable metal sleeve for pressing the first cutting edge into the outer part face fastening the expandable metal sleeve to the tubular metal part. The invention also relates to a downhole system comprising at least one annular barrier and a well tubular metal structure of which the tubular metal forms part.

Dependencies are inferred from the claim text.