FIELD: obtaining oil and gas from wells.
SUBSTANCE: invention relates to oil and gas industry, in particular to grouting mixtures intended for cementing oil and gas wells. Grouting composition contains the following, wt.%: cement of Saudian class G 50.03-50.40; plasticiser C-3 0.40-0.41; mineral wool fibres 20-500 mcm, saturated with carbon nanotubes with diameter from 5 to 15 nm and length from 10 to 20 nm in concentration of 25%, 18.65-19.01; water – balance.
EFFECT: higher efficiency of well casing at normal, medium and high temperatures, higher strength of adhesion to rock and casing.
1 cl, 5 tbl, 10 ex
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