FIELD: mining.
SUBSTANCE: invention relates to devices for separation of well bore into sections isolated from each other. Device for separation of well bore into isolated from each other sections comprises hollow housing, which can be mounted on tubing string, arranged on housing with possibility of axial movement of seal, support is fixed on housing above seal and installed on housing under seal with possibility of axial movement pusher, and also nozzle fixed on lower part of housing and communicated with its cavity. Seal is made in the form of base from basalt fiber saturated with filler in form of metal microparticles or nanoparticles of metal oxides. Device is equipped with at least two spacers placed in seal, and one of spacers is made of material, melting point of which does not exceed 450°, and other is made of material, melting point of which is not lower than 1,200°.
EFFECT: higher operating efficiency.
4 cl, 5 dwg
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