FIELD: oil and gas production industry. SUBSTANCE: according to method, sleeve is placed in predetermined spot and is secured in bore-hole. Then it is widened by drawing expanding mandrel through it. Sleeve has longitudinal slots which overlap each other. Used as expanding mandrel is mandrel with cone or mandrel having cylindrical body, pins deviating outside, and cone which is installed in cylindrical body and used for deviating pins outside. EFFECT: higher efficiency. 4 cl, 6 dwg
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