stone or medium sand the method according to the invention can be deployed when the tube 20 is at the bottom of the well or anywhere in the well or when the tube 20 is further associated downhole and or uphole with a casing when referring to uphole it is meant going towards the surface and downhole it is meant going away from the surface the method of the invention is a method of treatment of a zone of the well which can be called a non invasive method zone is defined as a part of the well or a region of the well which is delimited but which can be quite small u2014 from one cubic meter to ten cubic meters u2014 and which can also be quite large u2014 from hundred cubic meters to ten thousand cubic meters u2014 fig1 a shows for example the flow 3 of water from stratum 112 into the well 1 through the annulus 2 and the tube 20 one example of realization can be to use the method of the invention to shut off said flow of water without changing the structure of the tube 20 further the isolation in the annulus is essential to prevent the flow of water fig1 b shows the deployment of the.