초록 ▼

A device and method for determining the proportion of the phases of a multiphase fluid is disclosed. The device includes microwave emission and reception devices which are suited to the composition variation of the multiphase fluid, a processor and control for determining directly, from measurements

A device and method for determining the proportion of the phases of a multiphase fluid is disclosed. The device includes microwave emission and reception devices which are suited to the composition variation of the multiphase fluid, a processor and control for determining directly, from measurements of amplitude and phase shift of a beam crossing the multiphase medium and a rate of occupation of liquid phase and/or a gas phase for a given section of the pipe. The flow rate of each of the phases is determined.

대표청구항 ▼

[ I claim:] [1.] A method for determining a proportion of at least three phases of a multiphase medium flowing in a direction, the multiphase medium comprising at least an aqueous phase, an organic phase and a gaseous phase, the at least three phases having at least one characteristic permitting the

[ I claim:] [1.] A method for determining a proportion of at least three phases of a multiphase medium flowing in a direction, the multiphase medium comprising at least an aqueous phase, an organic phase and a gaseous phase, the at least three phases having at least one characteristic permitting the proportion of each of the at least three phases to be determined comprising:(a) irradiating the multiphase medium with an electromagnetic field emitted from an emission source in a direction not parallel to the direction of flow, the electromagnetic field being emitted at at least three frequencies;(b) measuring at least one elevation fixed with respect of the multiphase medium an amplitude and a phase shift of the electromagnetic field caused by irradiating the multiphase medium with each of the at least three frequencies; and(c) determining the proportion of at least the three phases constituting the multiphase medium for each of the at least three frequencies in response to a comparison of the measured amplitude and the phase shift with stored data.