Factors Causing Wettability Variations in Reservoirs and their Effect on Flow Effecting Parameters
Wettability plays a vital role in flow though porous media, overall performance of reservoir behavior and in designing of enhanced oil recovery methods. A lot of efforts have been made to know the factors playing key roles in defining the wettability of the reservoir. These parameters affect the reservoir wettability with the passage of time as a result of undergoing processes during development and depletion stages. In recent past, strong emphasis has been given to know the mechanism by which different parameters cause wettability variations, giving a new insight into wettability alteration studies. Such variations, in turn, affect the flow controlling parameters, i.e., capillary pressure and relative permeability. In this paper, such recent studies have been revisited, to present a review of some of the factors causing wettability alterations and their corresponding influence and incorporation into flow affecting parameters, while extending the work by proposing future directions for research in this area.
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