Measurement of the components distribution of a mixture by ultrasounds

摘要

The invention relates to a method and a device for measuring the distribution of the concentrations of constituents of a centrifuging medium containing at least one fluid. …According to the method, a mechanical signal, preferably an acoustic wave, is transmitted during the centrifuging from at least one transmission point [19-22] in contact with or in the immediate vicinity of the medium [16]. The transmitted signal is received by at least one reception point [20-22] in contact with or in the immediate vicinity of the medium. Measurement is made, for each transmission and reception point pair, of at least one propagation characteristic of the signal between the transmission point and the reception point of the signal and the distribution of the concentrations of the constituents present in the medium is determined by suitable processing means. …One application proposed is the calculation of the capillary pressure curves and of the relative permeabilities of fluids in a porous medium with a view especially to improving the exploitation of oil-bearing deposits. ……