Journal
GEOSCIENCES
Volume 12, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/geosciences12040168
Keywords
phase CO2; CO2 geological storage; CO2-brine-rock interaction; reservoir; net-zero target
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CO2-brine-rock interaction has significant impacts on the behavior and efficiency of CO2 geological storage. While previous research has provided valuable insights, the role of CO2 phase in this interaction has not been fully explored.
CO2-brine-rock interaction impacts the behavior and efficiency of CO2 geological storage; a thorough understanding of these impacts is important. A lot of research in the past has considered the nature and impact of CO2-brine-rock interaction and much has been learned. Given that the solubility and rate of mineralization of CO2 in brine under reservoir conditions is slow, free and mobile, CO2 will be contained in the reservoir for a long time until the phase of CO2 evolves. A review of independent research indicates that the phase of CO2 affects the nature of CO2-brinerock interaction. It is important to understand how different phases of CO2 that can be present in a reservoir affects CO2-brine-rock interaction. However, the impact of the phase of CO2 in a CO2-brinerock interaction has not been given proper attention. This paper is a systematic review of relevant research on the impact of the phase of CO2 on the behavior and efficiency of CO2 geological storage, extending to long-term changes in CO2, brine, and rock properties; it articulates new knowledge on the effect of the phase of CO2 on CO2-brine-rock behavior in geosequestration sites and highlights areas for further development.
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