Completion component

Abstract

A completion component includes a tubular metal part, an expandable sleeve surrounding the tubular metal part, an annular space between the expandable sleeve and the tubular metal part, and an expansion opening in the tubular metal part through which fluid may enter the annular space in order to expand the expandable sleeve. A first connection part is slidable along the axial extension, the second end part of the expandable sleeve abutting and being slidable in relation to the first connection part.

1 . A completion component for providing an annular barrier in a well between a first well tubular metal structure and an inner face of a borehole or a second well tubular metal structure for providing zone isolation between a first zone and a second zone of an annulus, comprising:
 a tubular metal part for mounting as part of the first well tubular metal structure, the tubular metal part having an axial extension and an outer face,   an expandable sleeve surrounding the tubular metal part and having a first end part and a second end part, an outer face facing towards the inner face of the borehole or the second well tubular metal structure, and an inner face facing the outer face of the tubular metal part,   an annular space between the expandable sleeve and the tubular metal part, and   an expansion opening in the tubular metal part through which fluid may enter the annular space in order to expand the expandable sleeve, wherein the first end part of the expandable sleeve is fixedly fastened with the tubular metal part and the second end part is slidable along the axial extension, and   wherein the completion component further comprises a first connection part having a first condition in which the first connection part is fixedly arranged along the axial extension by means of a breakable element, and a second condition in the first connection part is slidable along the axial extension, the second end part of the expandable sleeve abutting and being slidable in relation to the first connection part.   
     
     
         2 . A completion component according to  claim 1 , wherein the second end part of the expandable sleeve is slidable in relation to the first connection part. 
     
     
         3 . A completion component according to  claim 1 , wherein the first connection part in the first condition is fixedly arranged by means of a breakable element which is breakable at predetermined differential pressure between the pressure in the annular space and the first zone. 
     
     
         4 . A completion component according to  claim 1 , wherein the second end part is slidable in relation to the first connection part in a first direction towards the first end part of the expandable sleeve. 
     
     
         5 . A completion component according to  claim 1 , wherein the first connection part is slidable in the first direction after breaking the breakable element for creating an aperture between the first connection part and the tubular metal part or an end piece fastened to the tubular metal part. 
     
     
         6 . A completion component according to  claim 1 , wherein the first connection part is slidable in a second direction opposite the first direction after breaking the breakable element for creating an aperture between the first connection part and the second end part of the expandable sleeve. 
     
     
         7 . A completion component according to  claim 5 , wherein the fluid entering the expansion opening in order to expand the expandable sleeve is cement so that the cement also enters the aperture in order to provide cement in the first zone. 
     
     
         8 . A completion component according to  claim 2 , wherein the expandable sleeve comprises an intermediate part between the first end part and the second end part, the second end part of the expandable sleeve has a first thickness, and the intermediate part has a second thickness being smaller than the first thickness. 
     
     
         9 . A completion component according to  claim 2 , wherein the first connection part comprises a first fluid channel which in the first condition provides fluid communication between the expansion opening and the annular space. 
     
     
         10 . A completion component according to  claim 9 , wherein the first connection part is slidable in the second direction, after breaking the breakable element, in relation to the tubular metal part or an end piece fastened to the tubular metal part, closing the fluid communication between the expansion opening and the annular space. 
     
     
         11 . A completion component according to  claim 1 , wherein the first connection part further comprises a first compensation channel which in the second condition provides fluid communication between the annular space and the annulus surrounding the expandable sleeve. 
     
     
         12 . A completion component according to  claim 1 , further comprising an annular protection element arranged to circumferent the tubular metal part and arranged between the expansion opening and the second end part of the expandable sleeve, the annular protection element comprising a flow channel providing fluid communication between the expansion opening and the annular space in the first condition. 
     
     
         13 . A completion component according to  claim 12 , wherein the annular protection element is fastened to the first connection part in the first condition in a first position by means of a second breakable element, the annular protection element has an inner diameter being less than an inner diameter of the first connection part so that part of an end face of the annular protection element is exposed to the fluid entering the expansion opening to the effect that if the expandable sleeve bursts during expansion, the fluid from the expansion opening presses onto the annular protection element, breaking the breakable element and moving the annular protection element to a second position as the flow channel restricts the flow of fluid and creates higher pressure on the exposed end side than in the annular space. 
     
     
         14 . Downhole system comprising the completion component according to  claim 1  and a well tubular metal structure. 
     
     
         15 . Cementing method of providing cement in an annulus between the well tubular metal structure and a wall of a borehole or a second well tubular metal structure, comprising:
 mounting a tubular metal part of a completion component according to  claim 1  as part of the well tubular metal structure,   lowering the well tubular metal structure into the borehole,   expanding the expandable sleeve by pressurising the well tubular metal structure with cement until the predetermined pressure differential is reached,   providing an aperture, and   letting cement out through the aperture and into the annulus.