METHOD OF PROFILE SHUTTER INSTALLATION IN WELL Russian patent published in 2010 - IPC E21B29/10 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry, particularly to methods of insulation of troublesome zones at boring and repair of wells with shutters out of profile tubes. It involves preliminary extension of the profiled shutter setting interval with the help of an extension device in the lower part increasing its working diametre by way of pressure drop, connection of profiled pipe sections, the shutter release into the extended setting interval, preliminary rectification of the shutter with excess pressure, successive disconnection of the mandreling device in the upper part from the profiled shutter and its transition to the working position, its final tight pressing to the well walls by way of mandreling in the downward direction during pumping pressure through it till connection with fixation of the specific mandrel to the extension device. After completion of the profiled shutter pressing along the whole length fluid pumping is discontinued and the mandrel with the extension device is lifted to the surface.

EFFECT: process simplification, quality and reliability improvement, shutter setting time reduction, reduction of energy and financial expenditures.

6 dwg