FIELD: oil industry.
SUBSTANCE: invention relates to a method for analyzing complex hydrocarbon fluids and can be used for analyzing oil and gas condensate. The invention relates to a method for determining the composition of hydrocarbon fluid, which comprises determining the density of hydrocarbon fluid and determining the composition of hydrocarbon fluid by gas chromatography combined with time-span mass-analyzer for hydrocarbon fluid densities of 0.85 g/ml or less combined with a flame ionization detector or with a quadrupole mass-analyzer for hydrocarbon fluid densities greater than 0.85 g/ml but not more than 0.96 g/ml. The invention also relates to a variant of a method for determining the composition of hydrocarbon fluid and to variants of systems for selecting a hydrocarbon fluid composition method.
EFFECT: technical result is increase in accuracy of determining the composition and producing a hydrocarbon fluid fingerprint, which in turn leads to an increase in the degree to which hydrocarbon fluids differ relative to each other.
36 cl, 12 dwg, 5 tbl, 4 ex
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Authors
Dates
2021-02-09—Published
2020-06-17—Filed