Lattice Boltzmann pseudopotential multiphase modeling of transcritical CO2 flow using a crossover formulation

Assetbek Ashirbekov, Bagdagul Kabdenova, Alibek Kuljabekov, Ernesto Monaco, Lei Wang, Luis Rojas-Solórzano

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This report summarizes our recent implementation of a crossover formulation in the lattice Boltzmann method and its application in modeling transcritical CO2 sequestration in water-saturated porous media. A crossover enhancement of the Peng-Robinson equation of state increases the accuracy in predicting fluid properties in transcritical conditions, which is relevant in modeling CO2 sequestration. The crossover formulation leads to the prediction of liquid-vapor coexistence curves closer to experimental data. The formulation was validated with several tests and applied to model the displacement of H2O with CO2 in a homogeneous porous medium in multiple conditions. This investigation provides a promising strategy for improving the accuracy of the lattice Boltzmann method in modeling transcritical CO2 sequestration in aquifers using realistic transcritical conditions.

Cited as: Ashirbekov, A., Kabdenova, B., Kuljabekov, A., Monaco, E., Wang, L., Rojas-Solórzano, L. Lattice Boltzmann pseudopotential multiphase modeling of transcritical CO2 flow using a crossover formulation. Advances in Geo-Energy Research, 2022, 6(6): 539-540.


Carbon sequestration, crossover formulation, porous medium modeling

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