Pore-scale characterization of CO2 front progress through a porous medium using a free energy model based on Phase-Field Lattice Boltzmann Method

Moradi, Bijan; Moghadam, Amir Hosseini; Rasaei, Mohammad Reza; Papi, Ali

doi:10.1016/j.petrol.2021.110008

Cited by 12 publications

(5 citation statements)

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“…Overall, a higher percentage of the invading fluid has penetrated into the specified boxes by reducing the injection velocity. According to the literature (Bakhshian et al., 2019; Moradi, Moghadam, et al., 2022), the flow front due to the capillary fingering regime proceeds in different directions and entirely occupies the neighboring pores, which is well illustrated in Figure 5a. On the other hand, by increasing the injection velocity the viscous force will overcome the capillary force, so the invading front moves along the flow path due to the viscous fingering regime and partially occupies the pores' body.…”

Section: Resultsmentioning

confidence: 75%

“…It should be noted that the high capillary pressure zone shown by the yellow box has prevented the formation of a completely stable displacement regime in

M=

10 to some extent because this zone plays a resistive role for the injection front in the drainage process. Therefore, the injection velocity must be considered such that the injection front passes through the specified throat to achieve a completely stable displacement regime (Moradi, Moghadam, et al., 2022).…”

Section: Resultsmentioning

confidence: 99%

“…The lattice Boltzmann method (LBM) as a powerful tool can provide clear insights into phenomena in digital rock physics (Guiltinan et al., 2021; Moradi, Zojaji, et al., 2022; Pan et al., 2004; Zhao et al., 2018). In this method, the fluid flow is considered in the actual rock geometry, while in the pore‐network modeling, a simple representation of the porous structure is defined to simulate the flow dynamics, so that the accuracy of the simulation strongly depends on the extracted network (Moradi, Moghadam, et al., 2022; Piri & Blunt, 2005; Xie et al., 2017). Meanwhile, kinetic nature, automatic capturing of fluids interface, and parallel computing are other advantages of the LBM in computational fluid dynamics (Moradi, Zojaji, et al., 2022; Sedahmed et al., 2022; Warda et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

“…However, limitations such as limited density and viscosity ratios, not being conservative, high computational time, and especially spurious velocities make their use in pore‐scale studies questionable. Therefore, developing a hybrid phase‐field LBM model as a comprehensive model has been able to significantly overcome these limitations and be introduced as a powerful tool (Moradi, Moghadam, et al., 2022). In the hybrid phase‐field model, the interface dynamics is defined by an index function (order parameter), so that this parameter obeys the Cahn‐Hilliard equation or Cahn‐Hilliard‐like equation.…”

Section: Introductionmentioning

confidence: 99%

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Co‐Current Fluid Flow Mechanisms Within a Complex Porous Structure at the Pore Level

Moradi

Zojaji

2022

Water Resources Research

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This study has been addressed the mechanisms of the co‐current fluid flow in a heterogeneous porous media using the lattice Boltzmann method. Since the smallest interaction between viscous and capillary forces at the interface is of great importance, the simulations are performed with the hybrid phase‐field model at the pore level. This is because the main advantage of this model is that due to its connection with the phase‐field theory, it has a solid physical basis to record interface dynamics. Model verification is followed by recording viscous coupling effects. The relative permeability curves and the velocity profiles are compared with the analytical solution, so that the observations confirm the accuracy claim of the model. In the following, the fluid flow through the heterogeneous porous structure is simulated, so that its sweep efficiency and corresponding velocity field at the breakthrough time are discussed. The results show that increasing the injection velocity reduces the displacement efficiency and increases the velocity field fluctuations due to the viscous fingering regime. Changing the wetting conditions to strong imbibition (SI) will increase the efficiency due to the role of capillary pressure and corner flow mechanism. Also, increasing the interfacial tension in the SI and the strong drainage will increase and decrease the sweep efficiency, respectively, so the rate of changes in fully immiscible flow is much higher than the near miscible flow. The velocity fluctuations in the fully immiscible flow are more significant than in the near miscible flow, which is reasonable given the flow properties.

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Section: Resultsmentioning

confidence: 75%

“…It should be noted that the high capillary pressure zone shown by the yellow box has prevented the formation of a completely stable displacement regime in

M=

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Co‐Current Fluid Flow Mechanisms Within a Complex Porous Structure at the Pore Level

Moradi

Zojaji

2022

Water Resources Research

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“…Figure 21 shows that as the contact angle of the water phase gradually increases, the hydrophilicity of the wall decreases, the capillary force decreases, and salt water easily migrates toward large pores, making it difficult to penetrate complex small pores, resulting in a gradual decrease in the affected area. 45 The shortest model calculation time is 0.0358 s (1.4 PV) for θ = 90°. At the beginning of the suction process, there is little difference in the distributions of water and gas.…”

Section: Effect Of Wettability On the Microscopic Seepage Process Dur...mentioning

confidence: 99%

Simulation of the Microscopic Seepage Process of CO₂ Storage in Saline Aquifers at the Pore Scale

Cui,

Li,

2024

Energy Fuels

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CO 2 storage in saline aquifers is an important measure for CO 2 capture and storage (CCS), which can effectively reduce greenhouse gases. Current studies on CO 2 storage in saline aquifers mainly focus on the storage mechanism, fluid migration process, reservoir pressure evolution, and injection feasibility, but the models used in the studies are mostly macroscopic models, and it is difficult to accurately describe the microscopic seepage process of CO 2 in the pore space. To address the above research problems, this paper adopts a finely processed two-dimensional model of the core pore structure based on numerical simulation methods to simulate the microscopic seepage process of the CO 2 storage process in saline aquifers at the pore scale. The research results show that during the displacement process, CO 2 injection breaks through rapidly along the main flow line while seeping upward under the effect of the oil−water density difference and advancing forward in an irregular slope, causing the gas saturation to increase continuously. In the suction process, under the action of gravity, saline water is transported forward along the slope. After CO 2 injection, it will preferentially diffuse into the large pore saline water. The chemical products are mainly located in the diffusion and dissolution zones of CO 2 in water. The increase in the injection velocity during the displacement process will reduce the gas breakthrough time at the outlet. During the suction process, the increase in the injection velocity is beneficial to accelerate the water displacement process and will result in a reduction in the residual gas storage rate. The increase in the water contact angle will result in a decrease in the suction process time and an increase in the residual gas storage rate. This study has important implications for understanding the CO 2 plume migration laws and the CO 2 storage mechanisms from a microscopic perspective at the mine.

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Pore-scale simulation of multiphase flow and reactive transport processes involved in geologic carbon sequestration

Wang,

Xie,

et al. 2023

Earth-Science Reviews

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Pore-scale characterization of CO2 front progress through a porous medium using a free energy model based on Phase-Field Lattice Boltzmann Method

Cited by 12 publications

References 70 publications

Co‐Current Fluid Flow Mechanisms Within a Complex Porous Structure at the Pore Level

Co‐Current Fluid Flow Mechanisms Within a Complex Porous Structure at the Pore Level

Simulation of the Microscopic Seepage Process of CO₂ Storage in Saline Aquifers at the Pore Scale

Pore-scale simulation of multiphase flow and reactive transport processes involved in geologic carbon sequestration

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Pore-scale characterization of CO2 front progress through a porous medium using a free energy model based on Phase-Field Lattice Boltzmann Method

Cited by 12 publications

References 70 publications

Co‐Current Fluid Flow Mechanisms Within a Complex Porous Structure at the Pore Level

Co‐Current Fluid Flow Mechanisms Within a Complex Porous Structure at the Pore Level

Simulation of the Microscopic Seepage Process of CO2 Storage in Saline Aquifers at the Pore Scale

Pore-scale simulation of multiphase flow and reactive transport processes involved in geologic carbon sequestration

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Resources

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Simulation of the Microscopic Seepage Process of CO₂ Storage in Saline Aquifers at the Pore Scale