dynamic wettability alteration in immiscible two-phase flow in porous media: effect on transport properties and critical slowing down
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ID: 187295
2015
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Abstract
The change in contact angles due to the injection of low salinity water or any other wettability altering agent in an oil-rich porous medium is modeled by a network model of disordered pores transporting two immiscible fluids. We introduce a dynamic wettability altering mechanism, where the time dependent wetting property of each pore is determined by the cumulative flow of water through it. Simulations are performed to reach steady-state for different possible alterations in the wetting angle (θ). We find that deviation from oil-wet conditions re-mobilizes the stuck clusters and increases the oil fractional flow. However, the rate of increase in the fractional flow depends strongly on θ and as θ → 90◦ , a critical angle, the system shows critical slowing down which is characterized by two dynamic critical exponents.
| Reference Key |
eflovik2015frontiersdynamic
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|---|---|
| Authors | ;Vegard eFlovik;Santanu eSinha;Alex eHansen |
| Journal | journal of biomaterials science polymer edition |
| Year | 2015 |
| DOI |
10.3389/fphy.2015.00086
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