Density‐Driven Convection in a Fractured Porous Media: Implications for Geological CO2 Storage
Dissolution trapping is one of the primary mechanisms of carbon dioxide (CO2) storage in a geological formation. In this study, a numerical model was used to examine the impacts of single and multiple fractures on the transport of dissolved CO2 plumes in various geological settings. The effects of t...
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| Veröffentlicht in: | Water resources research 2019-07, Vol.55 (7), p.5852-5870 |
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| creator | Kim, Minji Kim, Kue‐Young Han, Weon Shik Oh, Junho Park, Eungyu |
| description | Dissolution trapping is one of the primary mechanisms of carbon dioxide (CO2) storage in a geological formation. In this study, a numerical model was used to examine the impacts of single and multiple fractures on the transport of dissolved CO2 plumes in various geological settings. The effects of the fracture angle, fracture‐matrix permeability ratio, fracture intersection, and matrix heterogeneity on density‐driven CO2 convection were systematically investigated. The fractures were found to play time‐varying roles in both homogeneous and heterogeneous media by serving as preferential pathways for both CO2‐rich plumes (fingers) and CO2‐free water. The competition between the enhancement of convective mixing and the inhibition of finger growth by the upward flow of freshwater generated a complex flow system. The interaction between the strong upward flow of freshwater through the fractures and the falling CO2‐rich fingers through the porous matrix induced a positive feedback, resulting in accelerated domain‐scale circulation and CO2 dissolution. While the CO2‐rich fingers grew relatively evenly at the top boundary in the homogeneous media, they selectively developed through the high permeable zones in the heterogeneous media. Compared with homogeneous media, the heterogeneous media preserving fractures particularly generated a more dynamic fracture‐matrix mass transfer, resulting in more rapid CO2 dissolution. The findings of this study were extended to examine the effects of fracture connectivity on the enhancement of CO2 transport and dissolution on a field scale.
Key Points
Fractures play a time‐varying role in density‐driven convection by serving as conduit for both CO2‐rich plume and CO2‐free water
CO2 dissolution rate is dependent on competition between enhancement of convective mixing and inhibition of finger growth
Heterogeneous media including fractures accelerate dynamic fracture‐matrix mass transfer compared with homogeneous media |
| doi_str_mv | 10.1029/2019WR024822 |
| format | Article |
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Key Points
Fractures play a time‐varying role in density‐driven convection by serving as conduit for both CO2‐rich plume and CO2‐free water
CO2 dissolution rate is dependent on competition between enhancement of convective mixing and inhibition of finger growth
Heterogeneous media including fractures accelerate dynamic fracture‐matrix mass transfer compared with homogeneous media</description><identifier>ISSN: 0043-1397</identifier><identifier>EISSN: 1944-7973</identifier><identifier>DOI: 10.1029/2019WR024822</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>Carbon dioxide ; Carbon sequestration ; Convection ; Convective mixing ; Density ; Dissolution ; dissolution trapping ; Dissolving ; Flow system ; fractured porous media ; Fractures ; Freshwater ; Geology ; Heterogeneity ; Inland water environment ; Mass transfer ; Mathematical models ; Numerical models ; numerical simulation ; Permeability ; Plumes ; Porous media ; Positive feedback ; Transport</subject><ispartof>Water resources research, 2019-07, Vol.55 (7), p.5852-5870</ispartof><rights>2019. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-2293-4686 ; 0000-0002-7282-6253 ; 0000-0001-8959-1078 ; 0000-0003-1202-8839</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2019WR024822$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2019WR024822$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,11494,27903,27904,45553,45554,46446,46870</link.rule.ids></links><search><creatorcontrib>Kim, Minji</creatorcontrib><creatorcontrib>Kim, Kue‐Young</creatorcontrib><creatorcontrib>Han, Weon Shik</creatorcontrib><creatorcontrib>Oh, Junho</creatorcontrib><creatorcontrib>Park, Eungyu</creatorcontrib><title>Density‐Driven Convection in a Fractured Porous Media: Implications for Geological CO2 Storage</title><title>Water resources research</title><description>Dissolution trapping is one of the primary mechanisms of carbon dioxide (CO2) storage in a geological formation. In this study, a numerical model was used to examine the impacts of single and multiple fractures on the transport of dissolved CO2 plumes in various geological settings. The effects of the fracture angle, fracture‐matrix permeability ratio, fracture intersection, and matrix heterogeneity on density‐driven CO2 convection were systematically investigated. The fractures were found to play time‐varying roles in both homogeneous and heterogeneous media by serving as preferential pathways for both CO2‐rich plumes (fingers) and CO2‐free water. The competition between the enhancement of convective mixing and the inhibition of finger growth by the upward flow of freshwater generated a complex flow system. The interaction between the strong upward flow of freshwater through the fractures and the falling CO2‐rich fingers through the porous matrix induced a positive feedback, resulting in accelerated domain‐scale circulation and CO2 dissolution. While the CO2‐rich fingers grew relatively evenly at the top boundary in the homogeneous media, they selectively developed through the high permeable zones in the heterogeneous media. Compared with homogeneous media, the heterogeneous media preserving fractures particularly generated a more dynamic fracture‐matrix mass transfer, resulting in more rapid CO2 dissolution. The findings of this study were extended to examine the effects of fracture connectivity on the enhancement of CO2 transport and dissolution on a field scale.
Key Points
Fractures play a time‐varying role in density‐driven convection by serving as conduit for both CO2‐rich plume and CO2‐free water
CO2 dissolution rate is dependent on competition between enhancement of convective mixing and inhibition of finger growth
Heterogeneous media including fractures accelerate dynamic fracture‐matrix mass transfer compared with homogeneous media</description><subject>Carbon dioxide</subject><subject>Carbon sequestration</subject><subject>Convection</subject><subject>Convective mixing</subject><subject>Density</subject><subject>Dissolution</subject><subject>dissolution trapping</subject><subject>Dissolving</subject><subject>Flow system</subject><subject>fractured porous media</subject><subject>Fractures</subject><subject>Freshwater</subject><subject>Geology</subject><subject>Heterogeneity</subject><subject>Inland water environment</subject><subject>Mass transfer</subject><subject>Mathematical models</subject><subject>Numerical models</subject><subject>numerical simulation</subject><subject>Permeability</subject><subject>Plumes</subject><subject>Porous media</subject><subject>Positive feedback</subject><subject>Transport</subject><issn>0043-1397</issn><issn>1944-7973</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNpNkM1Kw0AUhQdRsFZ3PsCA6-i985Np3Elqa6GiVKXLcZpMypQ0EydJpTsfwWf0SWypC1cHDh_ng0PIJcI1AktuGGAynwETA8aOSA8TISKVKH5MegCCR8gTdUrOmmYFgELGqkfeh7ZqXLv9-foeBrexFU19tbFZ63xFXUUNHQWTtV2wOX32wXcNfbS5M7d0sq5Ll5k92NDCBzq2vvTLXVXS9InRl9YHs7Tn5KQwZWMv_rJP3kb3r-lDNH0aT9K7aVQzpni0EAYEk7gwEiyaTIGSA5MXKs6FzLjB3BQIEoSyMi5ihiqOM4aojJKAheV9cnXYrYP_6GzT6pXvQrVT6r0AIOYDtqP4gfp0pd3qOri1CVuNoPcH6v8H6vksnTEBivNf6Y5k4g</recordid><startdate>201907</startdate><enddate>201907</enddate><creator>Kim, Minji</creator><creator>Kim, Kue‐Young</creator><creator>Han, Weon Shik</creator><creator>Oh, Junho</creator><creator>Park, Eungyu</creator><general>John Wiley & Sons, Inc</general><scope>7QH</scope><scope>7QL</scope><scope>7T7</scope><scope>7TG</scope><scope>7U9</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H94</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><orcidid>https://orcid.org/0000-0002-2293-4686</orcidid><orcidid>https://orcid.org/0000-0002-7282-6253</orcidid><orcidid>https://orcid.org/0000-0001-8959-1078</orcidid><orcidid>https://orcid.org/0000-0003-1202-8839</orcidid></search><sort><creationdate>201907</creationdate><title>Density‐Driven Convection in a Fractured Porous Media: Implications for Geological CO2 Storage</title><author>Kim, Minji ; Kim, Kue‐Young ; Han, Weon Shik ; Oh, Junho ; Park, Eungyu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p2273-b4a04251ba50e1ac70758adf76d45c3a1daf105047e56f621766c2117a7501fe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Carbon dioxide</topic><topic>Carbon sequestration</topic><topic>Convection</topic><topic>Convective mixing</topic><topic>Density</topic><topic>Dissolution</topic><topic>dissolution trapping</topic><topic>Dissolving</topic><topic>Flow system</topic><topic>fractured porous media</topic><topic>Fractures</topic><topic>Freshwater</topic><topic>Geology</topic><topic>Heterogeneity</topic><topic>Inland water environment</topic><topic>Mass transfer</topic><topic>Mathematical models</topic><topic>Numerical models</topic><topic>numerical simulation</topic><topic>Permeability</topic><topic>Plumes</topic><topic>Porous media</topic><topic>Positive feedback</topic><topic>Transport</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Minji</creatorcontrib><creatorcontrib>Kim, Kue‐Young</creatorcontrib><creatorcontrib>Han, Weon Shik</creatorcontrib><creatorcontrib>Oh, Junho</creatorcontrib><creatorcontrib>Park, Eungyu</creatorcontrib><collection>Aqualine</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Water resources research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Minji</au><au>Kim, Kue‐Young</au><au>Han, Weon Shik</au><au>Oh, Junho</au><au>Park, Eungyu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Density‐Driven Convection in a Fractured Porous Media: Implications for Geological CO2 Storage</atitle><jtitle>Water resources research</jtitle><date>2019-07</date><risdate>2019</risdate><volume>55</volume><issue>7</issue><spage>5852</spage><epage>5870</epage><pages>5852-5870</pages><issn>0043-1397</issn><eissn>1944-7973</eissn><abstract>Dissolution trapping is one of the primary mechanisms of carbon dioxide (CO2) storage in a geological formation. In this study, a numerical model was used to examine the impacts of single and multiple fractures on the transport of dissolved CO2 plumes in various geological settings. The effects of the fracture angle, fracture‐matrix permeability ratio, fracture intersection, and matrix heterogeneity on density‐driven CO2 convection were systematically investigated. The fractures were found to play time‐varying roles in both homogeneous and heterogeneous media by serving as preferential pathways for both CO2‐rich plumes (fingers) and CO2‐free water. The competition between the enhancement of convective mixing and the inhibition of finger growth by the upward flow of freshwater generated a complex flow system. The interaction between the strong upward flow of freshwater through the fractures and the falling CO2‐rich fingers through the porous matrix induced a positive feedback, resulting in accelerated domain‐scale circulation and CO2 dissolution. While the CO2‐rich fingers grew relatively evenly at the top boundary in the homogeneous media, they selectively developed through the high permeable zones in the heterogeneous media. Compared with homogeneous media, the heterogeneous media preserving fractures particularly generated a more dynamic fracture‐matrix mass transfer, resulting in more rapid CO2 dissolution. The findings of this study were extended to examine the effects of fracture connectivity on the enhancement of CO2 transport and dissolution on a field scale.
Key Points
Fractures play a time‐varying role in density‐driven convection by serving as conduit for both CO2‐rich plume and CO2‐free water
CO2 dissolution rate is dependent on competition between enhancement of convective mixing and inhibition of finger growth
Heterogeneous media including fractures accelerate dynamic fracture‐matrix mass transfer compared with homogeneous media</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1029/2019WR024822</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0002-2293-4686</orcidid><orcidid>https://orcid.org/0000-0002-7282-6253</orcidid><orcidid>https://orcid.org/0000-0001-8959-1078</orcidid><orcidid>https://orcid.org/0000-0003-1202-8839</orcidid></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Wiley-Blackwell AGU Digital Library |
| subjects | Carbon dioxide Carbon sequestration Convection Convective mixing Density Dissolution dissolution trapping Dissolving Flow system fractured porous media Fractures Freshwater Geology Heterogeneity Inland water environment Mass transfer Mathematical models Numerical models numerical simulation Permeability Plumes Porous media Positive feedback Transport |
| title | Density‐Driven Convection in a Fractured Porous Media: Implications for Geological CO2 Storage |
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