Plume Migration of Different Carbon Dioxide Phases During Geological Storage in Deep Saline Aquifers
| Autor: | Long Nghiem, Chien Hao Shen, Bieng Zih Hsieh, Ta Lin Chen |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Convection
geology Atmospheric Science Buoyancy lcsh:G1-922 Mineralogy hydrology engineering.material Oceanography Physics::Geophysics Physics::Fluid Dynamics chemistry.chemical_compound Phase (matter) Earth and Planetary Sciences (miscellaneous) Physics::Atmospheric and Oceanic Physics oceanic science Hydrology Aqueous solution geophysics lcsh:QE1-996.5 Aqueous two-phase system Supercritical fluid Plume lcsh:Geology chemistry Carbon dioxide engineering Astrophysics::Earth and Planetary Astrophysics space science lcsh:Geography (General) Geology |
| Zdroj: | Terrestrial, Atmospheric and Oceanic Sciences, Vol 26, Iss 4, p 375 (2015) |
| ISSN: | 1017-0839 |
| Popis: | This study estimates the plume migration of mobile supercritical phase (flowing), aqueous phase (dissolved), and ionic phase CO_2 (bicarbonate), and evaluates the spatial distribution of immobile supercritical phase (residual) and mineral phase CO_2 (carbonates) when CO_2 was sequestered. This utilized a simulation, in an anticline structure of a deep saline aquifer in the Tiechenshan (TCS) field, Taiwan. All of the trapping mechanisms and different CO_2 phases were studied using the fully coupled geochemical equation-of-state GEM compositional simulator. The mobile supercritical phase CO_2 moved upward and then accumulated in the up-dip of the structure because of buoyancy. A large amount of immobile supercritical phase CO_2 was formed at the rear of the moving plume where the imbibition process prevailed. Both the aqueous and ionic phase CO_2 finally accumulated in the down-dip of the structure because of convection. The plume volume of aqueous phase CO_2 was larger than that of the supercritical phase CO_2, because the convection process increased vertical sweep efficiency. The up-dip of the structure was not the major location for mineralization, which is different from mobile supercritical phase CO_2 accumulation. |
| Databáze: | OpenAIRE |
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