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Gong, J. (author), Wang, Yuan (author), Kamarul Bahrim, Ridhwan Zhafri B. (author), Tewari, Raj Deo (author), Mahamad Amir, Mohammad Iqbal (author), Farajzadeh, R. (author), Rossen, W.R. (author)Foam is utilized in enhanced oil recovery and CO<sub>2</sub> sequestration. Surfactant-alternating-gas (SAG) is a preferred approach for placing foam into reservoirs, due to it enhances gas injection and minimizes corrosion in facilities. Our previous studies with similar permeability cores show that during SAG injection, several banks occupy...journal article 2024
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Yu, G. (author), Tang, J. (author), Li, L. (author), Rossen, W.R. (author)The main objective of this study is to understand the vertical sweep efficiency with miscible CO2-water-coinjection as a secondary recovery method, from multiple perspectives: phase behavior, total relative mobility, fluid densities/viscosities, the driving forces and consequent phase distributions etc. We also seek to provide insights into...conference paper 2023
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Gong, J. (author), Wang, Yuan (author), Tewari, Raj Deo (author), Kamarul Bahrim, Ridhwan Zhafri B. (author), Rossen, W.R. (author)Aqueous foam is a dispersion of gas in liquid, where the liquid acts as the continuous phase and the gas is separated by thin liquid films stabilized by a surfactant. Foam injection is a widely used technique in various applications, including CO2 sequestration, enhanced oil recovery, soil remediation, etc. Surfactant-alternating-gas (SAG) is a...journal article 2023
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Rossen, W.R. (author), Farajzadeh, R. (author), Hirasaki, George J. (author), Amirmoshiri, Mohammadreza (author)Foam is a promising means to assist in the permanent, safe subsurface sequestration of CO2, whether inaquifers or as part of an enhanced-oil-recovery (EOR) process. Here we review the advantages demonstratedfor foam that would assist CO2 sequestration, in particular sweep efficiency and residual trapping, and thechallenges yet to be overcome....conference paper 2022
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)Foam is applied in enhanced oil recovery to improve the sweep of injected gas and increase oil recovery, by greatly reducing the mobility of gas. In the laboratory, X-ray computed tomography is commonly used to evaluate the performance of foam in core plugs. However, foam properties, such as bubble size and capillary pressure, are much more...journal article 2022
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Tang, Jinyu (author), Castaneda, Pablo (author), Marchesin, Dan (author), Rossen, W.R. (author)Foam is remarkably effective in the mobility control of gas injection for enhanced oil recovery (EOR) processes and CO<sub>2</sub> sequestration. Our goal is to better understand immiscible three-phase foam displacement with oil in porous media. In particular, we investigate (i) the displacement as a function of initial (I) and injection (J)...conference paper 2022
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Yu, G. (author), Rossen, W.R. (author)Foam injection is a promising means of reducing the relative mobility of gas, and hence improving the sweep efficiency of gas, in CO<sub>2</sub> and H<sub>2</sub> storage, soil-contaminant removal in aquifer remediation, enhanced oil recovery, and matrix-acid well stimulation. Theory (Rossen and Gauglitz, 1990; Ashoori et al., 2012) and...journal article 2022
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)In this study, to investigate how gravity affects foam in open vertical fractures, we report foam experiments in three 1-m-long, 15-cm-wide glass-model fractures. Each fracture has a smooth wall and a roughened wall. Between the two walls is a slit-like channel representing a single geological fracture. Three model fractures (Models A, B, and C)...journal article 2021
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)In enhanced oil recovery, foam can effectively mitigate conformance problems and maintain a stable displacement front, by trapping gas and reducing its relative permeability in situ. In this study, to understand gas trapping in fractures and how it affects foam behavior, we report foam experiments in a 1-m-long glass model fracture with a...journal article 2021
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)By trapping gas, foam can improve the sweep efficiency in enhanced oil recovery. In this study, to understand gas trapping in fractures, we have conducted experiments in a model fracture with a hydraulic aperture of 80 μm. One wall of the fracture is rough, and the other wall is smooth. The fracture is made of two glass plates and the direct...conference paper 2021
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Lyu, X. (author), Voskov, D.V. (author), Rossen, W.R. (author)Foam injection is one efficient way to mitigate gravity segregation during CO2 injection into porous media. The effect of gravity segregation on foam propagation in heterogeneous porous media is not yet fully resolved. To assess CO2 foam transport for enhanced oil recovery (EOR) and for CO2 storage processes in heterogeneous reservoirs, an...conference paper 2021
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Lyu, X. (author), Voskov, D.V. (author), Tang, J. (author), Rossen, W.R. (author)Foam injection is a promising enhanced-oil-recovery (EOR) technology that significantly improves the sweep efficiency of gas injection. Simulation of foam/oil displacement in reservoirs is an expensive process for conventional simulation because of the strongly nonlinear physics, such as multiphase flow and transport with oil/foam...journal article 2021
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Li, K. (author), Sharifnik, Mohammadamin (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)Foam coarsening by diffusion (Ostwald ripening) has been well studied in bulk foams. However, it is less well understood in porous media. In particular, the mechanisms that may slow or stop coarsening have not been fully investigated. In this paper, we report an experimental study of foam coarsening in two 1-m-long and 15-cm-wide model fractures...journal article 2021
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Lyu, X. (author), Voskov, D.V. (author), Rossen, W.R. (author)CO<sub>2</sub>-foam injection is a promising technology for reducing gas mobility and increasing trapping within the swept region in deep brine aquifers. In this work, a consistent thermodynamic model based on a combination of the Peng-Robinson equation of state (PR EOS) for gas components with an activity model for the aqueous phase is...journal article 2021
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Gong, J. (author), Flores Martinez, Wendy (author), Vincent-Bonnieu, S.Y.F. (author), Kamarul Bahrim, Ridhwan Zhafri (author), Che Mamat, Che A.Nasser Bakri (author), Tewari, Raj Deo (author), Mahamad Amir, Mohammad Iqbal (author), Farajzadeh, R. (author), Rossen, W.R. (author)Surfactant-alternating-gas (SAG) is a preferred method of foam injection, which is a promising means of enhanced oil recovery. Liquid injectivity in a SAG process is commonly problematic. Our previous studies suggest that the liquid injectivity can be better than expected due to the existence of a collapsed-foam region formed during the gas...journal article 2020
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Lyu, X. (author), Voskov, D.V. (author), Rossen, W.R. (author)Geological storage of CO2 is a crucial emerging technology to reduce anthropogenic greenhouse gas emissions. Due to the buoyant characteristic of injected gas and the complex geology of subsurface reservoirs, most injected CO2 either rapidly migrates to the top of the reservoir or fingers through high-permeability layers due to instability in...conference paper 2020
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)In this study, to investigate how gravity affects foam in fractures, we carry out seven sets of foam-scan experiments on three glass model fractures (model A, model B and model C) with a hydraulic aperture of 78, 98 and 128 microns respectively. We compare the behaviour of foam in the models placed horizontally and vertically. We find that...conference paper 2020
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)Gas-injection EOR processes have poor sweep efficiency due to conformance problems including channelling, gravity override and fingering. In naturally fractured reservoirs, sweep efficiency is further jeopardized, because gas breaks through fractures first, leaving most oil behind in the matrix. Strong foam can be created in fractures[1][2],...abstract 2020
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Li, K. (author), Wolf, K.H.A.A. (author), Rossen, W.R. (author)Gas injection often suffers from the poor sweep efficiency because of conformance problems, including gravity override, viscous fingering and channelling, as gas has a lighter density and a lower viscosity compared to in-situ fluids. Foam, by encapsulating the gas into separate bubbles in surfactant-contained liquid thin films (lamella), can...abstract 2020
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Gong, J. (author), Flores Martinez, Wendy (author), Vincent-Bonnieu, S.Y.F. (author), Kamarul Bahrim, Ridhwan Zhafri (author), Che Mamat, Che A Nasser Bakri (author), Tewari, Raj Deo (author), Mahamad Amir, Mohammad Iqbal (author), Farajzadeh, R. (author), Rossen, W.R. (author)Surfactant-alternating-gas (SAG) is a favored method of foam injection, which has been proved as an efficient way for enhancing oil recovery. However, foam flow is extremely complicated, and there are still unsolved problems for foam application. One is liquid injectivity. Our previous studies suggest that the injectivity in a SAG process is...journal article 2020