FIELD: soil or rock drilling.
SUBSTANCE: invention relates to packers. Packer consists of case with axial channel and at least two cups of cone-shaped shape. Cuffs are fixed with divergent parts towards each other. Cup cuffs are arranged with the possibility of alignment along the casing axis. Cuffs form their inner surfaces with a cavity filled with grease, at that the expanding parts of the cuffs are supported by an elastic protective element preventing washing out of the lubricant installed in the formed cavity.
EFFECT: technical result consists in ensuring absence of sludge inside cups, which leads to possibility of reusable use of disclosed device per one lowering of casing string.
4 cl, 2 dwg
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