SHOE FOR PLACEMENT OF PROFILE SHUTTER IN WELL Russian patent published in 2011 - IPC E21B29/10 

FIELD: oil and gas production.

SUBSTANCE: procedure consists in connection of sections of profile pipes, in lowering shutter into thief-zone, and in shutter straightening with pressure. A lower end of the shutter of the same shape as sections of the profile pipes is blinded from beneath and is equipped with a back valve. An upper end of the shutter of the same shape as the sections of the profile pipes are pressure tight connected with the straightening tool, the sub of which has the same shape as the sections of the profile pipes. It is telescopic inserted into the upper end of the profile pipes. The sections of profile pipes are interfacial jointed along profile. The sub of the straightening tool is hollow and is made out of the same material as the profile pipes. It is expanded by pressure simultaneously with profile pipes sections straightening.

EFFECT: increased reliability of insulation, reduced expenditures.

2 dwg