METHOD AND DEVICE TO DETERMINE FLUID FLOW PARAMETERS Russian patent published in 2007 - IPC E21B47/10 E21B36/04 

FIELD: survey of boreholes or wells, particularly indirect fluid parameter determination to measure oil-water mixture flow parameters, namely flow velocity, temperature and oil-water ratio.

SUBSTANCE: method involves arranging elongated heater in fluid flow so that the heater extends in fluid flow direction; installing heat sensors at opposite sensor ends, wherein heat sensors provide remote data reading and are adapted to measure temperature at interface between front heater surface and fluid flow zone and at interface between rear heater surface and fluid flow zone; calculating temperature difference between heater and fluid flow from above measured temperature values; determining oil-water ratio in fluid flow and fluid flow rate from said pressure difference with the use of mathematical or graphical relationship. Device may have the third heat sensor for temperature measurement at spacing from heater action zone. Different heater variants are also disclosed.

EFFECT: possibility to optimize fluid pumping equipment installation, simplified fluid flow parameter determination inside well.

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