Method for separating immiscible fluids of different density

A method for separating a flowing mixture of immiscible fluids of different density in which a higher density fluid phase is dispersed within a lower density fluid phase comprising passing the mixture through a centrifugal separator having an N.sub.D value of between 50 and 150 under conditions of non-atomizing flow such that the coordinates of the gas phase Froude coefficient and (1 + 30M).sup.0.5 times the ratio of the liquid phase Froude coefficient to the gas phase Froude coefficient of the fluid mixture at the separator inlet lie within the enclosed area defined by points A, A', B' and B in FIG. 1 hereto.