is to allow closing of orifices 11 this sleeve 20 comprises grooves 21 into which an operating tool lowered into the inner space of the production pipe can fit by traction on this tool the sleeve is moved in translation so as to close orifices 11 0027 fig2 is a perspective view of crown 4 equipped with a certain number of tubes 5 preferably evenly distributed around a diameter the section of the tubes can be square rectangular circular elliptical or bean shaped so as to allow to best occupy the space of a toric sector 0028 fig3 is a cross section along aa of the liner filter element 9 consists of a wire 15 wound and welded on supports 14 arranged along the radius and resting longitudinally along the outer surface of base tube 1 the number of supports 14 depends on the diameter of the device fig3 shows the layout of tubes 5 between two supports 14 in the variants using perforated sheets or woven cloths the sheets are folded around the supports to form a cylinder 0029 fig4 is a side view of supports 14 which comprise passages such as orifices 16 or machined passages 17 which allow free circulation of the effluent around the periphery of tube 1 the area of passage has to be sufficient not to disturb adjustment of the pressure drops 0030 fig5 illustrates an example of closing means for a tube 5 in crown 4 tapped bores 18 run through pipes 8 so that a screw 19 can close pipe 8 when it is screwed on and allow flow when the screw is undone this adjustment can be performed with tongs the.