Device and a method for optional closing of a section of a well

Abstract

A device and method for optional closing of a section of a well formation ( 6 ) in which there is disposed a pipe ( 2 ), and where the pipe ( 2 ) is provided with at least two receivers ( 1 ) or pluggable openings ( 28 ), with receivers ( 1 ) or pluggable openings ( 28 ) in different sections of the well formation ( 6 ) having different dimensions and/or geometry, whereby the receivers ( 1 ) and the pluggable openings ( 28 ) are arranged so as allow optional closing of these through supplying the pipe ( 2 ) with a sealing body ( 4, 32 ) of a corresponding dimension and/or geometry.

1 . A device for optional closing of a section of a well formation ( 6 ) in which there is disposed a pipe ( 2 ), characterized in that the pipe ( 2 ) is provided with at least two receivers ( 1 ) or pluggable openings ( 28 ), with receivers ( 1 ) or pluggable openings ( 28 ) in different sections of the well formation ( 6 ) having different dimensions and/or geometry, whereby the receivers ( 1 ) and the pluggable openings ( 28 ) are arranged so as allow optional closing of these through supplying the pipe ( 2 ) with a sealing body ( 4 ,  32 ) of a corresponding dimension and/or geometry.  
   
   
       2 . A device in accordance with  claim 1 , characterized in that the receiver ( 1 ) is provided with a barrier ( 14 ) arranged to prevent a sealing body ( 4 ) that corresponds to the receiver ( 1 ) from being displaced out of the receiver ( 1 ).  
   
   
       3 . A device in accordance with  claim 1 , characterized in that a flow chamber ( 20 ) is arranged sealingly between the pipe ( 2 ) and the well formation ( 6 ), where the flow chamber ( 20 ) is communicatingly connected to the well formation ( 6 ) by means of a chamber opening ( 24 ) and to the pipe ( 2 ) by means of a pluggable opening ( 28 ), the flow chamber ( 20 ) being arranged to receive at least one sealing body ( 32 ), where the sealing body ( 32 ) is arranged to seal the chamber opening ( 24 ) and/or the pluggable opening ( 28 ).  
   
   
       4 . A device in accordance with  claim 2 , characterized in that the pluggable opening ( 28 ) is equipped with a back flow stopper ( 34 ) arranged to allow the passage of a corresponding sealing body ( 32 ) in one direction but not in the opposite direction.  
   
   
       5 . A device in accordance with one or more of the preceding claims, characterized in that the sealing body ( 32 ) is made from a dissolving material.  
   
   
       6 . A method of optional closing of a section of a well formation ( 6 ) in which there is arranged a pipe ( 2 ), and which in addition is provided with a device in accordance with one or more of the preceding claims, characterized in that a sealing body ( 4 ,  32 ) of a dimension and/or geometry that corresponds to the barrier ( 14 ) or the pluggable opening ( 28 ) to be closed, is brought into the pipe ( 2 ).