FIELD: manufacturing technology.
SUBSTANCE: group of inventions relates to the casing packers. Casing packer includes packer module consisting of packer elements arranged on casing outer surface. Each packer element is base of metal or alloy having melting point of not more than 700 °C, and fillers introduced into the base, melting point of which is higher than temperature of working agent fed to bottom hole zone. Bismuth is used as base metal of at least one packer element. Also, casing packer can be equipped with additional packer modules.
EFFECT: technical result is to improve efficiency of isolating annular space.
8 cl, 3 dwg
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|---|---|---|---|
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|
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