Geomechanical analysis of the influence of CO2 injection location on fault stability

Large amounts of carbon dioxide (CO2) should be injected in deep saline formations to mitigate climate change, implying geomechanical challenges that require further understanding. Pressure build-up induced by CO2 injection will decrease the effective stresses and may affect fault stability. Geomech...

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Detalhes bibliográficos
Autores: Vilarrasa, Víctor, Makhnenko, Roman Y., Gheibi, Sohrab
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/156428
Acesso em linha:http://hdl.handle.net/10261/156428
Access Level:acceso abierto
Palavra-chave:Carbon dioxide (CO2) injection
Fault permeability
Fault stability
Geomechanics
Induced seismicity
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spelling Geomechanical analysis of the influence of CO2 injection location on fault stabilityVilarrasa, VíctorMakhnenko, Roman Y.Gheibi, SohrabCarbon dioxide (CO2) injectionFault permeabilityFault stabilityGeomechanicsInduced seismicityLarge amounts of carbon dioxide (CO2) should be injected in deep saline formations to mitigate climate change, implying geomechanical challenges that require further understanding. Pressure build-up induced by CO2 injection will decrease the effective stresses and may affect fault stability. Geomechanical effects of overpressure induced by CO2 injection either in the hanging wall or in the foot wall on fault stability are investigated. CO2 injection in the presence of a low-permeable fault induces pressurization of the storage formation between the injection well and the fault. The low permeability of the fault hinders fluid flow across it and leads to smaller overpressure on the other side of the fault. This variability in the fluid pressure distribution gives rise to differential total stress changes around the fault that reduce its stability. Despite a significant pressure build-up induced by the fault, caprock stability around the injection well is not compromised and thus, CO2 leakage across the caprock is unlikely to happen. The decrease in fault stability is similar regardless of the side of the fault where CO2 is injected. Simulation results show that fault core permeability has a significant effect on fault stability, becoming less affected for high-permeable faults. An appropriate pressure management will allow storing large quantities of CO2 without inducing fault reactivation. © 2016 Institute of Rock and Soil Mechanics, Chinese Academy of SciencesThe first author acknowledges the support from the “EPFL Fellows” fellowship program co-funded by Marie Curie, FP7 (Grant No. 291771) and partial support from the “TRUST” project of the European Community's Seventh Framework Programme FP7/2007–2013 (Grant No. 309607) and the “FracRisk” project of the European Community's Horizon 2020 Framework Programme H2020-EU.3.3.2.3 (Grant No. 640979). Activities of the second author are sponsored by SCCER-SoE (Switzerland) (Grant No. KTI.2013.288) and Swiss Federal Office of Energy (SFOE) project CAPROCK (Grant No. 810008154). This publication has also been produced with partial support from the BIGCCS Centre (for the third author), performed under the Norwegian research program Centers for Environment-friendly Energy Research (FME). The third author acknowledges the following partners for their contributions: Gassco, Shell, Statoil, TOTAL, ENGIE, and the Research Council of Norway (193816/S60).Peer reviewedChinese Academy of SciencesEuropean CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201720172016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/156428reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/291771info:eu-repo/grantAgreement/EC/FP7/309607info:eu-repo/grantAgreement/EC/H2020/640979https://doi.org/10.1016/j.jrmge.2016.06.006Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1564282026-05-22T06:33:51Z
dc.title.none.fl_str_mv Geomechanical analysis of the influence of CO2 injection location on fault stability
title Geomechanical analysis of the influence of CO2 injection location on fault stability
spellingShingle Geomechanical analysis of the influence of CO2 injection location on fault stability
Vilarrasa, Víctor
Carbon dioxide (CO2) injection
Fault permeability
Fault stability
Geomechanics
Induced seismicity
title_short Geomechanical analysis of the influence of CO2 injection location on fault stability
title_full Geomechanical analysis of the influence of CO2 injection location on fault stability
title_fullStr Geomechanical analysis of the influence of CO2 injection location on fault stability
title_full_unstemmed Geomechanical analysis of the influence of CO2 injection location on fault stability
title_sort Geomechanical analysis of the influence of CO2 injection location on fault stability
dc.creator.none.fl_str_mv Vilarrasa, Víctor
Makhnenko, Roman Y.
Gheibi, Sohrab
author Vilarrasa, Víctor
author_facet Vilarrasa, Víctor
Makhnenko, Roman Y.
Gheibi, Sohrab
author_role author
author2 Makhnenko, Roman Y.
Gheibi, Sohrab
author2_role author
author
dc.contributor.none.fl_str_mv European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Carbon dioxide (CO2) injection
Fault permeability
Fault stability
Geomechanics
Induced seismicity
topic Carbon dioxide (CO2) injection
Fault permeability
Fault stability
Geomechanics
Induced seismicity
description Large amounts of carbon dioxide (CO2) should be injected in deep saline formations to mitigate climate change, implying geomechanical challenges that require further understanding. Pressure build-up induced by CO2 injection will decrease the effective stresses and may affect fault stability. Geomechanical effects of overpressure induced by CO2 injection either in the hanging wall or in the foot wall on fault stability are investigated. CO2 injection in the presence of a low-permeable fault induces pressurization of the storage formation between the injection well and the fault. The low permeability of the fault hinders fluid flow across it and leads to smaller overpressure on the other side of the fault. This variability in the fluid pressure distribution gives rise to differential total stress changes around the fault that reduce its stability. Despite a significant pressure build-up induced by the fault, caprock stability around the injection well is not compromised and thus, CO2 leakage across the caprock is unlikely to happen. The decrease in fault stability is similar regardless of the side of the fault where CO2 is injected. Simulation results show that fault core permeability has a significant effect on fault stability, becoming less affected for high-permeable faults. An appropriate pressure management will allow storing large quantities of CO2 without inducing fault reactivation. © 2016 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences
publishDate 2016
dc.date.none.fl_str_mv 2016
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/156428
url http://hdl.handle.net/10261/156428
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/291771
info:eu-repo/grantAgreement/EC/FP7/309607
info:eu-repo/grantAgreement/EC/H2020/640979
https://doi.org/10.1016/j.jrmge.2016.06.006
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Chinese Academy of Sciences
publisher.none.fl_str_mv Chinese Academy of Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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