FIELD: oil and gas industry. SUBSTANCE: repair and restoration of oil and gas wells in condition of surrounding aggressive media requires isolation of inter- column of gas-oil water inflows which is performed according to results of geophysical investigations in well which help determine depth interval of occurrence of high-plastic rock. Then, section of casing string within determined interval of high-plastic rock occurrence is perforated. Inter- column space is filled with insulating material at side of rock mass. Used as insulating material is high-plastic rock itself. EFFECT: high ecological reliability and efficiency. 1 dwg
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