Multiphase fluid e.g. petroleum effluent, composition determining method, involves finding volume fractions by minimizing distance between measured attenuation and phase shift pair and attenuation and phase shift pair determined by model

摘要

The method involves determining a measurement model expressing attenuation and phase shift of a microwave beam as a function of volume fractions and permittivities of various phases of a fluid. The volume fractions of the phases are determined by minimizing a distance between two points whose coordinates correspond respectively to measured attenuation and phase shift pair and to attenuation and phase shift pair determined by the model.