Although Carbon Capture and Storage (CCS)has been demonstrated successfully on many occasions, the potential leakage of deep sequestrated CO 2 into shallow groundwater remains a concern. To address this, an artificial injection experiment was performed at the K-COSEM test site in Eumseong, South Korea, that involved the release of CO 2 –infused water (16.9 kg of CO 2 in 5 m 3 )containing He and Kr tracers into a shallow, heterogeneous, weathered-granite aquifer. The initial CO 2 –fluid was slightly oversaturated at the subsurface injection point, and thus the plume was expected to initially degas CO 2 before equilibrating at in-situ conditions. Monitoring of carbonate system parameters in nearby observation wells helped define the evolution of the injected fluids, while the noble gas tracers were used to clearly define the physical behavior of the CO 2 plume (including an estimate of degassed CO 2 equal to 0.9–3.1%). This study demonstrates the potential use of noble gases for monitoring CO 2 leakage in shallow aquifers, constraining mass balance and phase changes of leaking fluids, and better understanding local flow pathways. Furthermore, breakthrough of noble gases in this study was different from some previous experiments, suggesting that monitoring efficiency of these tracers may depend on leakage and site conditions.

Application of natural and artificial tracers to constrain CO2 leakage and degassing in the K-COSEM site, South Korea / Ju, Y.; Beaubien, S. E.; Lee, S. -S.; Kaown, D.; Hahm, D.; Lee, S.; Park, I. -W.; Park, K.; Yun, S. -T.; Lee, K. -K.. - In: INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL. - ISSN 1750-5836. - 86:(2019), pp. 211-225. [10.1016/j.ijggc.2019.05.002]

Application of natural and artificial tracers to constrain CO2 leakage and degassing in the K-COSEM site, South Korea

Beaubien S. E.;
2019

Abstract

Although Carbon Capture and Storage (CCS)has been demonstrated successfully on many occasions, the potential leakage of deep sequestrated CO 2 into shallow groundwater remains a concern. To address this, an artificial injection experiment was performed at the K-COSEM test site in Eumseong, South Korea, that involved the release of CO 2 –infused water (16.9 kg of CO 2 in 5 m 3 )containing He and Kr tracers into a shallow, heterogeneous, weathered-granite aquifer. The initial CO 2 –fluid was slightly oversaturated at the subsurface injection point, and thus the plume was expected to initially degas CO 2 before equilibrating at in-situ conditions. Monitoring of carbonate system parameters in nearby observation wells helped define the evolution of the injected fluids, while the noble gas tracers were used to clearly define the physical behavior of the CO 2 plume (including an estimate of degassed CO 2 equal to 0.9–3.1%). This study demonstrates the potential use of noble gases for monitoring CO 2 leakage in shallow aquifers, constraining mass balance and phase changes of leaking fluids, and better understanding local flow pathways. Furthermore, breakthrough of noble gases in this study was different from some previous experiments, suggesting that monitoring efficiency of these tracers may depend on leakage and site conditions.
artificial tracer; carbon capture and storage; CO2 leakage; geochemical tracing; geological storage; noble gas tracing
01 Pubblicazione su rivista::01a Articolo in rivista
Application of natural and artificial tracers to constrain CO2 leakage and degassing in the K-COSEM site, South Korea / Ju, Y.; Beaubien, S. E.; Lee, S. -S.; Kaown, D.; Hahm, D.; Lee, S.; Park, I. -W.; Park, K.; Yun, S. -T.; Lee, K. -K.. - In: INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL. - ISSN 1750-5836. - 86:(2019), pp. 211-225. [10.1016/j.ijggc.2019.05.002]
File allegati a questo prodotto
File Dimensione Formato  
Ju_Application_2019.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 7.18 MB
Formato Adobe PDF
7.18 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1285450
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 13
social impact