FIELD: oil production, particularly well survey means.
SUBSTANCE: method involves extracting at least two samples of two-phase system under different thermo-baric conditions of well product movement and performing componential analysis of phases thereof. Sampling is carried out under thermo-baric conditions corresponding to that of main well product flow determined at sampling time. Componential analysis for gaseous and liquid phases of the samples is performed under the same conditions. Componential analysis and output gas-oil ratio determination is carried out by matching mol fraction of gas phase in sampling point on the base of mathematical least error criterion.
EFFECT: possibility to perform componential analysis and output gas-oil ratio determination without well shutdown.
1 tbl
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