FIELD: oil and gas production. SUBSTANCE: process of separation of tubular annulus in injection wells is intended for protection of operational string against high- pressure effect. Given process of separation employs packer placed on lower end of tubing string. Outer surface of tubing string is coated with sticky mass that later functions as separating filler. Bitumen, tar or composite material is used in the capacity of sticky mass. Tubular annulus is filled with fluid demonstrating anticorrosion properties, for instance, with oil. Filler is deposited hydraulically by means of its heating to liquid state. EFFECT: increased reliability and prolonged operation of injection wells fitted with packers. 2 dwg
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