FIELD: oil and gas industry.
SUBSTANCE: group of inventions is related to elastomers, and namely to reinforced elastomers. The well sealing technique for the well borehole includes receipt of a basic polymer and reinforcing active filler, which contains a matrix of discreet parts of the first material paced in the basic polymer. At the first stage the well sealing is unfolded in the well borehole. Impact is made on fluid sealing in the well borehole, at that transfer of the sealing to the second stage is made under action of the fluid in the borehole. At that discreet part of the first material differ between themselves and/or with the basic polymer by weaker values before impact of the borehole fluid than after impact. At that the first stage is differentiated by the first elastic modulus and the second stage is differentiated by the second elastic modulus, and the second modulus is bigger than the first one.
EFFECT: improving the sealing efficiency.
25 cl, 14 dwg, 2 ex, 4 tbl
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