FIELD: construction.
SUBSTANCE: group of inventions relates to the casing packers. Casing packer includes a packer module consisting of packer elements arranged on the outer surface of the casing. In the first variant, each packer element is a base of a metal or alloy which has a melting temperature not over 700 °C. Fillers are introduced into the basis of the packer elements. Bismuth is used as a basis for at least one packer element. In the second variant, the packer is equipped with additional stacking modules located on the outer surface of the casing. Packer elements of different modules have different melting temperature, not exceeding 700 °C. Packer elements of one of the modules are made of bismuth.
EFFECT: technical result is improving the insulation effectiveness of the annular space.
6 cl, 3 dwg
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