A rapid method for prediction of convective-diffusive mass transfer during CO2 storage in saline aquifers

R. Nazari Moghaddam, P. Pourafshary

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

CO2 storage in deep saline aquifers has been suggested as a way of reducing greenhouse gas emissions. Correct estimation of dissolution rate is important because the time scale for dissolution corresponds to the time scale over which free phase CO2 has a chance to leak out. However, for this estimation, an expensive and time consuming simulation based on the convection-diffusion equation must be performed. In this paper, a new model for rapid determination of dissolution rate for convection-diffusion mechanism is proposed. It is used to account the rate of mass transferring in porous media during CO2 storage. For this purpose, a new diffusion equation was developed based on the pseudo diffusion coefficient of the system. Experimental tests were conducted in porous media to evaluate the pseudo diffusion coefficient of the system. It is shown that this coefficient can be approximated by a relationship for the Rayleigh number of the system. The fraction of ultimate dissolution, as a result of the proposed model, is calculated for each test and compared with the experimental data to verify the reliability of proposed method.

Original languageEnglish
Title of host publication75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiers
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages3269-3273
Number of pages5
ISBN (Print)9781629937915
Publication statusPublished - 2013
Event75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiers - London, United Kingdom
Duration: Jun 10 2013Jun 13 2013

Other

Other75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiers
CountryUnited Kingdom
CityLondon
Period6/10/136/13/13

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ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geochemistry and Petrology

Cite this

Nazari Moghaddam, R., & Pourafshary, P. (2013). A rapid method for prediction of convective-diffusive mass transfer during CO2 storage in saline aquifers. In 75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiers (pp. 3269-3273). European Association of Geoscientists and Engineers, EAGE.