FLOW MEASURING METHOD OF TWO-PHASE THREE-COMPONENT MEDIUM Russian patent published in 2013 - IPC G01F1/20 

FIELD: measurement equipment.

SUBSTANCE: hydrodynamic investigations of an oil well are performed in three-five modes of stationary filtration. Bottom-hole pressure and flow rate of the oil well are measured in each steady-state filtration mode. Besides, flow rate of each component is measured by means of a measuring plant, and flow velocity, water content, gas saturation, pressure and temperature are fixed with sensors of multi-phase flow metre. Calibration of multi-phase flow metre is performed based on flow rate values of oil, water and oil gas, which are determined by means of the measuring plant. Synthesis of mathematical model is performed based on self-organisation models; oil, water and oil gas flow rate values determined by means of the measuring plant and values of sensors of multi-phase flow metre, which correspond to them, are used as calibration points. During normal well operation, the flow rate of oil, water and oil gas is determined based on self-organisation models; at that, input data is taken off sensors of multi-phase flow metre.

EFFECT: consideration of physical and chemical properties of oil, water and oil gas at measurement of flow rates of those components; therefore, improvement of measurement accuracy of multi-phase flow metre.