Plume migration of different carbon dioxide phases during geological storage in deep saline aquifers

Chien Hao Shen, Long Nghiem, Ta Lin Chen, Bieng-Zih Hsieh

Research output: Contribution to journalArticle

Abstract

This study estimates the plume migration of mobile supercritical phase (flowing), aqueous phase (dissolved), and ionic phase CO2 (bicarbonate), and evaluates the spatial distribution of immobile supercritical phase (residual) and mineral phase CO2 (carbonates) when CO2 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 CO2 phases were studied using the fully coupled geochemical equation-of-state GEM compositional simulator. The mobile supercritical phase CO2 moved upward and then accumulated in the up-dip of the structure because of buoyancy. A large amount of immobile supercritical phase CO2 was formed at the rear of the moving plume where the imbibition process prevailed. Both the aqueous and ionic phase CO2 finally accumulated in the down-dip of the structure because of convection. The plume volume of aqueous phase CO2 was larger than that of the supercritical phase CO2, 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 CO2 accumulation.

Original languageEnglish
Pages (from-to)375-386
Number of pages12
JournalTerrestrial, Atmospheric and Oceanic Sciences
Volume26
Issue number4
DOIs
Publication statusPublished - 2015 Aug 1

Fingerprint

dip
plume
carbon dioxide
aquifer
convection
imbibition
anticline
bicarbonate
equation of state
buoyancy
simulator
trapping
mineralization
spatial distribution
carbonate
mineral
simulation

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)

Cite this

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Plume migration of different carbon dioxide phases during geological storage in deep saline aquifers. / Shen, Chien Hao; Nghiem, Long; Chen, Ta Lin; Hsieh, Bieng-Zih.

In: Terrestrial, Atmospheric and Oceanic Sciences, Vol. 26, No. 4, 01.08.2015, p. 375-386.

Research output: Contribution to journalArticle

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