Patent ID: 9045975
Filing Date: 2015-06-02
Classification: E21B

Abstract:
1. A well tool for in situ introduction of a liquid treatment substance into a region of an annulus located outside a pipe structure in a well, the well tool comprising: at least one anchoring body for anchoring against an inside of the pipe structure; at least two perforation devices for forming at least two holes through a wall of the pipe structure; at least one storage chamber for storing the liquid treatment substance; at least one driving device for forcing the liquid treatment substance out of the storage chamber; at least two flow-through connection devices connected in a flow-communicating manner to the storage chamber and structured such that the at least two flow-through connection devices are connectable in a flow-communicating manner to said at least two holes through the wall of the pipe structure for injection of the liquid treatment substance into said region of the annulus, wherein the well tool is structured for receiving energy and control signals for operation of the well tool, wherein said anchoring body is disposed in an anchoring module, wherein at least said storage chamber, said driving device, and said connection devices are operatively connected to an injection module, wherein the injection module is structured such that the injection module is axially movable relative to the anchoring module, thereby allowing the connection devices to be moved to a position in vicinity of said at least two holes after the forming of said at least two holes, and wherein the well tool comprises at least one alignment device for alignment of the connection devices vis-à-vis the at least tow holes through the wall of the pipe structure for connection to the at least two holes and subsequent injection of the liquid treatment substance into said region of the annulus.