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

Cited 6 time in wos
Cited 7 time in scopus
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Title
Application of natural and artificial tracers to constrain CO2 leakage and degassing in the K-COSEM site, South Korea
Other Titles
천연 및 인공 추적자를 이용한 CO2유출 추정
Authors
Ju, YeoJin
Beaubien, Stan E.
Lee, Seong-Sun
Kaown, Dugin
Hahm, Doshik
Lee, Sanghoon
Park, In-Woo
Park, Keyhong
Yun, Seong-Taek
Lee, Kang-Kun
Subject
Science & Technology - Other Topics; Energy & Fuels; Engineering
Keywords
Artificial tracer; CO2 leakage; Carbon capture and storage; Geochemical tracing; Geological storage; Noble gas tracing
Issue Date
2019-07
Citation
Ju, YeoJin, et al. 2019. "Application of natural and artificial tracers to constrain CO2 leakage and degassing in the K-COSEM site, South Korea". INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, 86(1): 211-225.
Abstract
Although Carbon Capture and Storage (CCS) has been demonstrated successfully on many occasions, the po-tentialleakage ofdeepsequestratedCO2intoshallowgroundwaterremainsaconcern.Toaddressthis,anar-tificialinjectionexperimentwasperformedattheK-COSEMtestsiteinEumseong,SouthKorea,thatinvolvedthe release of CO2?infused water (16.9kg of CO2in 5m3) containing He and Kr tracers into a shallow, het-erogeneous, weathered-granite aquifer. The initial CO2?fluid was slightly oversaturated at the subsurface in-jectionpoint,andthustheplumewasexpectedtoinitiallydegasCO2beforeequilibratingatin-situconditions.Monitoring of carbonate system parameters in nearby observation wells helped define the evolution of theinjectedfluids,whilethenoblegastracerswereusedtoclearlydefinethephysicalbehavioroftheCO2plume(includinganestimateofdegassedCO2equalto0.9?3.1%).ThisstudydemonstratesthepotentialuseofnoblegasesformonitoringCO2leakageinshallowaquifers,constrainingmassbalanceandphasechangesofleakingfluids, and better understanding local flow pathways. Furthermore, breakthrough of noble gases in this studywas different from some previous experiments, suggestingthat monitoring efficiencyof these tracers may de-pendonleakageandsiteconditions.
URI
https://repository.kopri.re.kr/handle/201206/10915
DOI
http://dx.doi.org/10.1016/j.ijggc.2019.05.002
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