Multiphase flowmeter
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United States of America Patent
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Mar 27, 2018
Issued Date -
N/A
app pub date -
Dec 6, 2012
filing date -
Dec 6, 2011
priority date (Note) -
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Abstract
Method and apparatus for measuring properties of a flowing multiphase mixture uses a plurality of electrodes or plurality of microwave antennas to rapidly and repeatedly measure an electrical property of the multiphase mixture over a period of time. A computer processes the rapid and repeated measurements to determine a succession of values of permittivity and/or conductivity of a liquid phase of the multiphase mixture within the said period of time and further processes the succession of values of a permittivity and/or a conductivity of the liquid phase to determine at least one of a water-in-liquid-ratio and a liquid holdup of the multiphase mixture. A conduit for the multiphase flow possibly includes a Venturi and the processor takes pressure and differential pressure as further inputs to compute flow rates for each phase in the multiphase mixture.
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