Shock polymer concentration

The polymer concentration shock, corresponding to the saturation shock from S p to S i, moves at Vcpi... 

In the case of polymer flooding with a sharpening front, polymer concentration jumps from zero (its initial value) to its injection concentration Ciq. D, in Eq. 2.88 becomes Dp. In this case, the high polymer concentration solution flushes the initial zero polymer concentration solution. As discussed in Section 2.5 on types of fronts, there is a concentration shock. Corresponding to this concentration shock, there is a saturation shock from S p to Swi. The specific velocity of this saturation shock, (vd )as > is... 

Fig. 7. Surfactant concentration in oil and brine, partition coefficient and interfacial tension of effluent fluids of soluble oil flooding in Berea cores containing high concentration of CaCl2. The salinity shock design of polymer solution (i.e. two pol3rmer slugs) was used.

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