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Title: Modeling CO 2 flow in support of a shallow subsurface controlled leakage field test

Abstract

Here, controlled release of carbon dioxide (CO 2) into the soil and atmosphere is performed to test detection and monitoring tools, for which several field laboratories were established by a number of institutions worldwide. Numerical simulations of CO 2 behavior in the shallow subsurface region are other forms of validation and verification of the leakage pathways and destinations. These reports aim to improve monitoring and verification of CO 2 in case of unexpected leakages for public assurance. In this work, we introduce the results of a numerical modeling study conducted to simulate the injection of CO 2 as carried out during a field test in Viamão, southern Brazil, where 20 kg day –1 of CO 2 was pumped for 30 days through a vertical well 3 m below ground in an altered granitic soil. Multiphase flow simulations were performed with the TOUGH2/EOS7CA software for unsaturated porous media, using field data and injection parameters, including sensitivity tests to permeability direction, diffusivity, and boundary conditions. Results with increased horizontal permeabilities are in better agreement with the field observations. In this condition, mass balance calculations indicate approximately 90% of injected CO2 (20 kg day –1 during 30 days) remains in the soil after 180 days from injectionmore » start, consistent with the measured flow through the soil–atmosphere interface.« less

Authors:
ORCiD logo [1];  [2];  [1];  [3];  [3]; ORCiD logo [4]
  1. Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre (Brazil)
  2. Aarhus Univ. (Denmark)
  3. PETROBRAS – CENPES Centro de Pesquisas e Desenvolvimento Leopoldo Américo Miguez de Mello, Rio de Janeiro (Brazil)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1572849
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Greenhouse Gases: Science and Technology
Additional Journal Information:
Journal Volume: 9; Journal Issue: 5; Journal ID: ISSN 2152-3878
Publisher:
Society of Chemical Industry, Wiley
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; CCUS; CO2; modeling; TOUGH2; EOS7CA

Citation Formats

Iglesias, Rodrigo S., Romio, Cristiane, Melo, Clarissa L., Musse, Ana Paula S., do Rosário, Fátima, and Oldenburg, Curtis M. Modeling CO2 flow in support of a shallow subsurface controlled leakage field test. United States: N. p., 2019. Web. doi:10.1002/ghg.1917.
Iglesias, Rodrigo S., Romio, Cristiane, Melo, Clarissa L., Musse, Ana Paula S., do Rosário, Fátima, & Oldenburg, Curtis M. Modeling CO2 flow in support of a shallow subsurface controlled leakage field test. United States. doi:10.1002/ghg.1917.
Iglesias, Rodrigo S., Romio, Cristiane, Melo, Clarissa L., Musse, Ana Paula S., do Rosário, Fátima, and Oldenburg, Curtis M. Tue . "Modeling CO2 flow in support of a shallow subsurface controlled leakage field test". United States. doi:10.1002/ghg.1917.
@article{osti_1572849,
title = {Modeling CO2 flow in support of a shallow subsurface controlled leakage field test},
author = {Iglesias, Rodrigo S. and Romio, Cristiane and Melo, Clarissa L. and Musse, Ana Paula S. and do Rosário, Fátima and Oldenburg, Curtis M.},
abstractNote = {Here, controlled release of carbon dioxide (CO2) into the soil and atmosphere is performed to test detection and monitoring tools, for which several field laboratories were established by a number of institutions worldwide. Numerical simulations of CO2 behavior in the shallow subsurface region are other forms of validation and verification of the leakage pathways and destinations. These reports aim to improve monitoring and verification of CO2 in case of unexpected leakages for public assurance. In this work, we introduce the results of a numerical modeling study conducted to simulate the injection of CO2 as carried out during a field test in Viamão, southern Brazil, where 20 kg day–1 of CO2 was pumped for 30 days through a vertical well 3 m below ground in an altered granitic soil. Multiphase flow simulations were performed with the TOUGH2/EOS7CA software for unsaturated porous media, using field data and injection parameters, including sensitivity tests to permeability direction, diffusivity, and boundary conditions. Results with increased horizontal permeabilities are in better agreement with the field observations. In this condition, mass balance calculations indicate approximately 90% of injected CO2 (20 kg day–1 during 30 days) remains in the soil after 180 days from injection start, consistent with the measured flow through the soil–atmosphere interface.},
doi = {10.1002/ghg.1917},
journal = {Greenhouse Gases: Science and Technology},
number = 5,
volume = 9,
place = {United States},
year = {2019},
month = {8}
}

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