FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, in particular to thickened water-based compositions for hydraulic fracturing. Viscoelastic fluid for hydraulic fracturing contains the following, wt.%: surfactant – oleylamidopropyl dimethylamine 2.70-4.80; citric acid or a mixture of citric acid and oxalic acid in a weight ratio of 1:1 0.50-0.82; sodium salicylate 0.075-0.10; fresh water – balance.
EFFECT: high effective viscosity of the composition at a shear rate of 100 s-1 and thermal stability in a wide temperature range from 25 to 60 °C.
1 cl, 4 ex
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