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CO2‐water‐rock interactions in undeformed and sheared claystone caprocks from Northern Europe.

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Title: CO2‐water‐rock interactions in undeformed and sheared claystone caprocks from Northern Europe.
Authors: Vernooij, Roland1 (AUTHOR), Siqueira, Tiago de Abreu2 (AUTHOR), Hangx, Suzanne3 (AUTHOR), Spiers, Christopher3 (AUTHOR), Ketzer, Marcelo4 (AUTHOR), Iglesias, Rodrigo Sebastian2 (AUTHOR) rodrigo.iglesias@pucrs.br
Source: Greenhouse Gases: Science & Technology. Apr2021, Vol. 11 Issue 2, p232-250. 19p.
Subject Terms: *Geological carbon sequestration, *Greenhouse gases, *Minerals, Cap rock, Fault gouge, Geological formations
Company/Entity: Society of Chemical Industry (Great Britain)
Abstract: One of the most promising, cost‐effective, and readily available technologies for reducing greenhouse gas emissions to the atmosphere is the capture and separation of CO2 from large stationary sources and storage in geological formations. Storage security, especially in the early stages of operation, is mostly guaranteed by caprock formations with very low permeability overlying the reservoir, capable of containing the injected fluid. Chemical alterations of the formation brine, caused by CO2 injection may cause dissolution and precipitation of secondary minerals, potentially increasing the risks of leakage from the reservoir. In order to evaluate these processes and their potential to induce the formation of leakage pathways in ultrafine fault gouges, a series of batch experiments was performed on crushed and sheared samples from three different caprock formations from Northern Europe (Sollingen, Röt and Opalinus claystones). The experiments were supported by numerical models of the kinetics of mineral dissolution and precipitation simulating the same experimental conditions, and over a longer time (10 000 years). Minor mineral alterations were observed after the batch experiments, the most important being: illite dissolution for the Opalinus and Röt formation samples, and dolomite dissolution and the transformation of illite and chlorite into kaolinite for the Sollingen sample. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Copyright of Greenhouse Gases: Science & Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: GreenFILE
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Header DbId: 8gh
DbLabel: GreenFILE
An: 149846236
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: CO<subscript>2</subscript>‐water‐rock interactions in undeformed and sheared claystone caprocks from Northern Europe.
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  Data: <searchLink fieldCode="JN" term="%22Greenhouse+Gases%3A+Science+%26+Technology%22">Greenhouse Gases: Science & Technology</searchLink>. Apr2021, Vol. 11 Issue 2, p232-250. 19p.
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  Data: *<searchLink fieldCode="DE" term="%22Geological+carbon+sequestration%22">Geological carbon sequestration</searchLink><br />*<searchLink fieldCode="DE" term="%22Greenhouse+gases%22">Greenhouse gases</searchLink><br />*<searchLink fieldCode="DE" term="%22Minerals%22">Minerals</searchLink><br /><searchLink fieldCode="DE" term="%22Cap+rock%22">Cap rock</searchLink><br /><searchLink fieldCode="DE" term="%22Fault+gouge%22">Fault gouge</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+formations%22">Geological formations</searchLink>
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: One of the most promising, cost‐effective, and readily available technologies for reducing greenhouse gas emissions to the atmosphere is the capture and separation of CO2 from large stationary sources and storage in geological formations. Storage security, especially in the early stages of operation, is mostly guaranteed by caprock formations with very low permeability overlying the reservoir, capable of containing the injected fluid. Chemical alterations of the formation brine, caused by CO2 injection may cause dissolution and precipitation of secondary minerals, potentially increasing the risks of leakage from the reservoir. In order to evaluate these processes and their potential to induce the formation of leakage pathways in ultrafine fault gouges, a series of batch experiments was performed on crushed and sheared samples from three different caprock formations from Northern Europe (Sollingen, Röt and Opalinus claystones). The experiments were supported by numerical models of the kinetics of mineral dissolution and precipitation simulating the same experimental conditions, and over a longer time (10 000 years). Minor mineral alterations were observed after the batch experiments, the most important being: illite dissolution for the Opalinus and Röt formation samples, and dolomite dissolution and the transformation of illite and chlorite into kaolinite for the Sollingen sample. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Greenhouse Gases: Science & Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/ghg.2045
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 232
    Subjects:
      – SubjectFull: Geological carbon sequestration
        Type: general
      – SubjectFull: Greenhouse gases
        Type: general
      – SubjectFull: Minerals
        Type: general
      – SubjectFull: Cap rock
        Type: general
      – SubjectFull: Fault gouge
        Type: general
      – SubjectFull: Geological formations
        Type: general
      – SubjectFull: Society of Chemical Industry (Great Britain)
        Type: general
    Titles:
      – TitleFull: CO2‐water‐rock interactions in undeformed and sheared claystone caprocks from Northern Europe.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Vernooij, Roland
      – PersonEntity:
          Name:
            NameFull: Siqueira, Tiago de Abreu
      – PersonEntity:
          Name:
            NameFull: Hangx, Suzanne
      – PersonEntity:
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            NameFull: Spiers, Christopher
      – PersonEntity:
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            NameFull: Ketzer, Marcelo
      – PersonEntity:
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            NameFull: Iglesias, Rodrigo Sebastian
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          Dates:
            – D: 01
              M: 04
              Text: Apr2021
              Type: published
              Y: 2021
          Identifiers:
            – Type: issn-print
              Value: 21523878
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            – Type: volume
              Value: 11
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: Greenhouse Gases: Science & Technology
              Type: main
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