Geochemical aspects of CO2 sequestration in deep saline aquifers: A review

Silva, G.P.D. De; Ranjith, P.G.; Perera, M.S.A.

doi:10.1016/j.fuel.2015.03.045

Cited by 269 publications

(148 citation statements)

References 89 publications

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“…These similarities are evidence demonstrating that the rock property change directly originated from the geochemical reaction with the injected scCO 2 , which further resulted in the rock surface roughness change and ion concentration change in the groundwater, and also that the surface roughness measurement provides a lot of quantitative information regarding the extent of the geochemical reaction related to the scCO 2 in the subsurface. The results showed that the physical properties of the sandstone changed rapidly within a few months due to the geochemical reaction with the injected CO 2 , but the rate decreased in a relatively short time (a few months), verifying that the physical property change of the CO 2 reservoir rocks occurred faster than expected from previous research [56][57][58]. Because the effect of the geochemical reaction on the reservoir rock property change is moderated after a short time, attention to the geochemical reaction at the early CO 2 injection stage is very important in preventing leakage and in understanding CO 2 sequestration site characteristics from the CO 2 storage capacity point of view.…”

Section: Measurement Of Physical Property Changes For the Sandstone Csupporting

confidence: 74%

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

et al. 2017

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Changes in the physical properties of the supercritical CO 2 (scCO 2 ) reservoir rock is one of the most important factors in controlling the storage safety at a scCO 2 sequestration site. According to recent studies, it is probable that geochemical reactions influence changes in the rock properties after a CO 2 injection in the subsurface, but quantitative data that reveal the interrelationship of the factors involved and the parameters needed to evaluate the extent of scCO 2 -rock-groundwater reactions have not yet been presented. In this study, the potential for employing the surface roughness value (SR RMS ) to quantify the extent of the scCO 2 involved reaction was evaluated by lab-scale experiments. For a total of 150 days of a simulation of the scCO 2 -sandstone-groundwater reaction at 100 bar and 50 • C, the trends in changes in the physical rock properties, pH change, and cation concentration change followed similar logarithmic patterns that were significantly correlated with the logarithmic increase in the SR RMS value. These findings suggest that changes in surface roughness can quantify the extent of the geochemical weathering process and can be used to evaluate leakage safety due to the progressive changes in rock properties at scCO 2 storage sites.

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Section: Measurement Of Physical Property Changes For the Sandstone Csupporting

confidence: 74%

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

et al. 2017

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“…The study of partially miscible stratifications has recently gained interest due to its relevance for groundwater management [1,2], enhanced oil recovery [3][4][5] or carbon dioxide (CO 2 ) sequestration [5][6][7][8][9][10][11][12][13][14]. Such stratifications are typically composed of a reservoir phase A dissolving with a finite solubility into a host phase, containing chemicals that may react with A.…”

Section: Introductionmentioning

confidence: 99%

Density profiles around A+B→C reaction-diffusion fronts in partially miscible systems: A general classification

et al. 2016

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Various spatial density profiles can develop in partially miscible stratifications, when a phase A dissolves with a finite solubility into a host phase containing a dissolved reactant B. We investigate theoretically the impact of an A+B → C reaction on such density profiles in the host phase and classify them in a parameter space spanned by the ratios of relative contributions to density and diffusion coefficients of the chemical species. While the density profile is either monotonically increasing or decreasing in the non reactive case, reactions combined with differential diffusivity can create eight different types of density profiles featuring up to two extrema in density, at the reaction front or below it. We use this framework to predict various possible hydrodynamic instability scenarios inducing buoyancy-driven convection around such reaction fronts when they propagate parallel to the gravity field.

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“…During the CO 2 sequestration process, solubility trapping of CO 2 in brine has been considered as the most effective and rapid storage mechanism in saline aquifers (De Silva et al, 2015). Thus, the concentration variation of HCO 3 − and pH was investigated in this study, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Effects of H2S injection on the CO2-brine-sandstone interaction under 21 MPa and 70 °C

Zhang

Lyu

et al. 2016

Marine Pollution Bulletin

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Geochemical aspects of CO2 sequestration in deep saline aquifers: A review

Cited by 269 publications

References 89 publications

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

Density profiles around A+B→C reaction-diffusion fronts in partially miscible systems: A general classification

Effects of H2S injection on the CO2-brine-sandstone interaction under 21 MPa and 70 °C

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