Pore-scale phenomena in carbon geological storage (Saline aquifers—Mineralization—Depleted oil reservoirs)
The injection of CO 2 into geological formations triggers inherently coupled thermo-hydro-chemo-mechanical processes. The reservoir pressure and temperature determine the CO 2 density, the CO 2 -water interfacial tension, and the solubility of CO 2 in water (hindered by salts and competing gases). T...
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crfrontiers:10.3389/fenrg.2022.979573 2024-09-15T18:01:41+00:00 Pore-scale phenomena in carbon geological storage (Saline aquifers—Mineralization—Depleted oil reservoirs) Liu, Qi Benitez, Marcelo D. Xia, Zhao Santamarina, J. Carlos 2022 http://dx.doi.org/10.3389/fenrg.2022.979573 https://www.frontiersin.org/articles/10.3389/fenrg.2022.979573/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Energy Research volume 10 ISSN 2296-598X journal-article 2022 crfrontiers https://doi.org/10.3389/fenrg.2022.979573 2024-08-27T04:04:58Z The injection of CO 2 into geological formations triggers inherently coupled thermo-hydro-chemo-mechanical processes. The reservoir pressure and temperature determine the CO 2 density, the CO 2 -water interfacial tension, and the solubility of CO 2 in water (hindered by salts and competing gases). The CO 2 -water interface experiences marked pinning onto mineral surfaces, and contact angles can range from the asymptotic advancing to receding values, in contrast to the single contact angle predicted by Young’s equation. CO 2 dissolves in water to form carbonic acid and the acidified water dissolves minerals; mineral dissolution enhances porosity and permeability, triggers settlement, may couple with advection to form “wormholes”, produces stress changes and may cause block sliding and shear bands. Convective currents can emerge beneath the CO 2 plume and sustain CO 2 and mineral dissolution processes. On the other hand, mineralization is a self-homogenizing process in advective regimes. The crystallization pressure can exceed the tensile capacity of the host rock and create new surfaces or form grain-displacive lenses. Within the rock matrix, coupled reactive-diffusion-precipitation results in periodic precipitation bands. Adequate seal rocks for CO 2 geological storage must be able to sustain the excess capillary pressure in the buoyant CO 2 plume without experiencing open-mode discontinuities or weakening physico-chemical interactions. CO 2 injection into depleted oil reservoirs benefits from time-proven seals; in addition, CO 2 can mobilize residual oil to simultaneously recover additional oil through oil swelling, ganglia destabilization, the reduction in oil viscosity and even miscible displacement. Rapid CO 2 depressurization near the injection well causes cooling under most anticipated reservoir conditions; cooling can trigger hydrate and ice formation, and reduce permeability. In some cases, effective stress changes associated with the injection pressure and cooling thermoelasticity can reactivate ... Article in Journal/Newspaper Carbonic acid Frontiers (Publisher) Frontiers in Energy Research 10 |
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The injection of CO 2 into geological formations triggers inherently coupled thermo-hydro-chemo-mechanical processes. The reservoir pressure and temperature determine the CO 2 density, the CO 2 -water interfacial tension, and the solubility of CO 2 in water (hindered by salts and competing gases). The CO 2 -water interface experiences marked pinning onto mineral surfaces, and contact angles can range from the asymptotic advancing to receding values, in contrast to the single contact angle predicted by Young’s equation. CO 2 dissolves in water to form carbonic acid and the acidified water dissolves minerals; mineral dissolution enhances porosity and permeability, triggers settlement, may couple with advection to form “wormholes”, produces stress changes and may cause block sliding and shear bands. Convective currents can emerge beneath the CO 2 plume and sustain CO 2 and mineral dissolution processes. On the other hand, mineralization is a self-homogenizing process in advective regimes. The crystallization pressure can exceed the tensile capacity of the host rock and create new surfaces or form grain-displacive lenses. Within the rock matrix, coupled reactive-diffusion-precipitation results in periodic precipitation bands. Adequate seal rocks for CO 2 geological storage must be able to sustain the excess capillary pressure in the buoyant CO 2 plume without experiencing open-mode discontinuities or weakening physico-chemical interactions. CO 2 injection into depleted oil reservoirs benefits from time-proven seals; in addition, CO 2 can mobilize residual oil to simultaneously recover additional oil through oil swelling, ganglia destabilization, the reduction in oil viscosity and even miscible displacement. Rapid CO 2 depressurization near the injection well causes cooling under most anticipated reservoir conditions; cooling can trigger hydrate and ice formation, and reduce permeability. In some cases, effective stress changes associated with the injection pressure and cooling thermoelasticity can reactivate ... |
format |
Article in Journal/Newspaper |
author |
Liu, Qi Benitez, Marcelo D. Xia, Zhao Santamarina, J. Carlos |
spellingShingle |
Liu, Qi Benitez, Marcelo D. Xia, Zhao Santamarina, J. Carlos Pore-scale phenomena in carbon geological storage (Saline aquifers—Mineralization—Depleted oil reservoirs) |
author_facet |
Liu, Qi Benitez, Marcelo D. Xia, Zhao Santamarina, J. Carlos |
author_sort |
Liu, Qi |
title |
Pore-scale phenomena in carbon geological storage (Saline aquifers—Mineralization—Depleted oil reservoirs) |
title_short |
Pore-scale phenomena in carbon geological storage (Saline aquifers—Mineralization—Depleted oil reservoirs) |
title_full |
Pore-scale phenomena in carbon geological storage (Saline aquifers—Mineralization—Depleted oil reservoirs) |
title_fullStr |
Pore-scale phenomena in carbon geological storage (Saline aquifers—Mineralization—Depleted oil reservoirs) |
title_full_unstemmed |
Pore-scale phenomena in carbon geological storage (Saline aquifers—Mineralization—Depleted oil reservoirs) |
title_sort |
pore-scale phenomena in carbon geological storage (saline aquifers—mineralization—depleted oil reservoirs) |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/fenrg.2022.979573 https://www.frontiersin.org/articles/10.3389/fenrg.2022.979573/full |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Frontiers in Energy Research volume 10 ISSN 2296-598X |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fenrg.2022.979573 |
container_title |
Frontiers in Energy Research |
container_volume |
10 |
_version_ |
1810438773826125824 |