Inter-facial Tension (IFT)

Whether Young and Dupre Equations will remain valid either during secondary or tertiary oil recovery?

How about their validity in an oil-wet and a carbonate reservoir?

Whether the inter-facial tension (IFT) between solid-grains and the wetting-fluid in the pore spaces will remain equal to the summation of the liquid surface tension and the solid surface tension with the deduction of solid-liquid inter-molecular forces (as defined by Dupre) - in a petroleum reservoir undergoing either secondary or tertiary recovery?

To what extent, the magnitude of solid-liquid inter-facial tension will remain equal to the difference between the solid surface tension and the product of liquid surface tension times cos theta (as defined by Young), in the case of an oil-wet and a carbonate reservoir?

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