METHOD TO MEASURE MULTI-PHASE FLUID IN WELL Russian patent published in 2015 - IPC E21B47/10 G01F1/74 G01F1/86 

FIELD: measurement equipment.

SUBSTANCE: invention relates to production of a well fluid, in particular, to the method of measurement of a multi-phase flow of a fluid using a flow meter. The method includes detection of a multi-phase flow in a flow meter by measurement of fluid pressure in a flow meter and usage of the measured pressure to calculate flow density. The total flow through the flow meter is determined on the basis of the calculated density and PVT of the fluid analysis. The corrected total mass flow is calculated using the correction methodology for sliding of liquid/gas. Flow values are also corrected with account of the flow coefficient in leakage that varies together with variations of the Reynolds number for the fluid. Gas and oil fractions may be determined by the corrected total mass flow rate and value of the gas fraction.

EFFECT: increased accuracy of measurement of a multi-phase flow of a fluid.

16 cl, 4 dwg, 1 tbl