FIELD: oil industry.
SUBSTANCE: method includes measuring flow and density of liquid, used for preparation of mixture for hydraulic fracturing of bed, measuring flow and density of mixture of liquid with proppant at output from mixture preparation machine. Current value of mixture density is measured in some time after delay, equal to time of passing of a portion of liquid through mixture preparation machine. On basis of results of measurements of these parameters current value of volumetric concentration of proppant C and mass share of proppant X in the mixture are calculated using formulae: 
,
where ρpr - mineralogical density of proppant; ρl - current value of liquid density; ρpil - piled density of proppant; ρmix - current mixture density value; Θ - mixture volume increase coefficient during mixing of liquid with proppant and chemical reagents.
EFFECT: higher precision.
4 cl, 7 dwg, 1 tbl
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