Patent ID: 8925629
Filing Date: 2015-01-06
Classification: E21B

Abstract:
1. A down hole well tool for installing a casing/liner in a well bore, wherein the down hole well tool comprises: a tool unit comprising at least one first fluid conduit and a return fluid conduit, wherein in use an annulus is formed between the tool unit and the casing/liner, wherein the tool unit further comprises at least one piston in the annulus dividing the annulus into annulus spaces, wherein the tool unit is operated by differential fluid pressure brought about over the at least one piston; and at least two expansion modules for the expansion of the casing/liner positioned displaced in an axial direction of the casing/liner, wherein the movement of the at least one piston causes the movement of the expansion modules, wherein the expansion modules are arranged to be moved relative to each other in the axial direction of the casing/liner.