METHOD OF HYDRAULIC INTENSIFICATION AND CORRESPONDING DEVICE OF HYDRAULIC INTENSIFICATION Russian patent published in 2019 - IPC E21B43/26 

FIELD: drilling of wells.

SUBSTANCE: group of inventions relates to well drilling with production intensification. Method includes arrangement in a well casing pipe, equipped along its outer side with extensible tubular couplings, rigidly connected to pipe, wherein, opposite each sleeve, the pipe has at least one opening for establishing communication between the inner space of the pipe and the space limited by said pipe and each coupling, pumping liquid into said pipe at preset first pressure, wherein said first pressure is sufficient for expansion of said clutches. At that, for each of the treated zones of the well wall, the method additionally includes the following stages: installation of means of shutting off the pipe after the first treated zone, perforation of the pipe wall and, at least, in some cases, perforating the casing at the level of the first treated zone, pumping liquid into said pipe at a predetermined second intensification pressure.

EFFECT: simplified technology, higher level of tightness and efficiency of wells.

18 cl, 22 dwg