Numerical study of pressure evolution from CO2 injection in saline Aquifers

Kue Young Kim, Weon Shik Han, Taehee Kim

Research output: Contribution to journalArticle

Abstract

Injectivity is one of several key parameters that determine the effectiveness of the geologic formation targeted for CO2 injection. In general, the injectivity depends on various factors including the formation permeability, formation thickness, relative permeability, and porosity reduction due to mineral precipitation. Salt-precipitation caused by evaporation of brine into the CO2 stream near injection well is one of the important factors that reduce the injectivity. The objective of this study is to evaluate the effect of parameters such as formation permeability, porosity, residual gas saturation, and residual liquid saturation on salt-precipitation and corresponding permeability (k) reduction. Specific combination of injection rate and permeability caused a dramatic increase of solid NaCl saturation at the lower part of aquifer, which contributes to high pressure build-up and eventually lowers the injectivity.

Original languageEnglish
Pages (from-to)4532-4537
Number of pages6
JournalEnergy Procedia
Volume4
DOIs
Publication statusPublished - 2011 Jan 1

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Aquifers
Porosity
Salts
Evaporation
Minerals
Liquids
Gases

All Science Journal Classification (ASJC) codes

  • Energy(all)

Cite this

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abstract = "Injectivity is one of several key parameters that determine the effectiveness of the geologic formation targeted for CO2 injection. In general, the injectivity depends on various factors including the formation permeability, formation thickness, relative permeability, and porosity reduction due to mineral precipitation. Salt-precipitation caused by evaporation of brine into the CO2 stream near injection well is one of the important factors that reduce the injectivity. The objective of this study is to evaluate the effect of parameters such as formation permeability, porosity, residual gas saturation, and residual liquid saturation on salt-precipitation and corresponding permeability (k) reduction. Specific combination of injection rate and permeability caused a dramatic increase of solid NaCl saturation at the lower part of aquifer, which contributes to high pressure build-up and eventually lowers the injectivity.",
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Numerical study of pressure evolution from CO2 injection in saline Aquifers. / Kim, Kue Young; Han, Weon Shik; Kim, Taehee.

In: Energy Procedia, Vol. 4, 01.01.2011, p. 4532-4537.

Research output: Contribution to journalArticle

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