METHOD OF SELECTIVE INSULATION OF HIGH PERMEABLE ZONE OF RESERVOIR Russian patent published in 2009 - IPC E21B33/00 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry, particularly to selective insulation of high permeable zones of reservoir flushed with water in pressure and producing wells when accurate data on location of said zones of reservoir in not uniform collectors of oil deposits are absent. The method consists in pumping insulating composition via the producing well and in process conditioning. Pumping of insulating composition is performed in two portions. The volume of the first portion is chosen 1-10 m³ per 1 m of perforated oil reservoir zones thickness, while ratio of volumes of portions is chosen as 1:(1-2). After each portion of insulating composition there is performed driving, process conditioning and assessment of intake capacity; after pumping the last portion of insulating composition well completion and start-up are performed.

EFFECT: increased efficiency of insulation of high permeable reservoirs.

4 cl, 3 ex