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description Publicationkeyboard_double_arrow_right Article , Conference object , Journal , Other literature type 2011 SpainPublisher:Elsevier BV Funded by:EC | MUSTANGEC| MUSTANGAuthors:Vilarrasa Riaño, Víctor;
Vilarrasa Riaño, Víctor
Vilarrasa Riaño, Víctor in OpenAIREOlivella Pastallé, Sebastià;
Olivella Pastallé, Sebastià
Olivella Pastallé, Sebastià in OpenAIRECarrera Ramírez, Jesús;
Carrera Ramírez, Jesús
Carrera Ramírez, Jesús in OpenAIREhandle: 10261/43241 , 10261/42099 , 2117/15846
Sequestration of carbon dioxide (CO2) in deep saline aquifers has emerged as a mitigation strategy for reducing greenhouse gas emissions to the atmosphere. The large amounts of supercritical CO2 that need to be injected into deep saline aquifers may cause large fluid pressure buildup. The resulting overpressure will produce changes in the effective stress field. This will deform the rock and may promote reactivation of sealed fractures or the creation of new ones in the caprock seal, which could lead to escape paths for CO2. To understand these coupled hydromechanical phenomena, we model an axisymmetric horizontal aquifer-caprock system. We study plastic strain propagation patterns using a viscoplastic approach. Simulations illustrate that plastic strain may propagate through the whole thickness of the caprock if horizontal stress is lower than vertical stress. In contrast, plastic strain concentrates in the contact between the aquifer and the caprock if horizontal stress is larger than vertical stress. Aquifers that present a low-permeability boundary experience an additional fluid pressure increase once the pressure buildup cone reaches the outer boundary. However, fluid pressure does not evolve uniformly in the aquifer. While it increases in the low-permeability boundary, it drops in the vicinity of the injection well because of the lower viscosity of CO2. Thus, caprock stability does not get worse in semi-closed aquifers compared to open aquifers. Overall, the caprock acts as a plate that bends because of pressure buildup, producing a horizontal extension of the upper part of the caprock. This implies a vertical compression of this zone, which may produce settlements instead of uplift in low-permeability (k≤10-18 m2) caprocks at early times of injection. Peer Reviewed
Universitat Politècn... arrow_drop_down Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledgeArticle . 2011Full-Text: http://hdl.handle.net/2117/15846Data sources: Bielefeld Academic Search Engine (BASE)Recolector de Ciencia Abierta, RECOLECTAArticleData sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAConference object . 2010 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAArticle . 2011Data sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAArticle . 2011 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAUPCommons. Portal del coneixement obert de la UPCArticle . 2011Data sources: UPCommons. Portal del coneixement obert de la UPChttp://dx.doi.org/10.1016/j.eg...Other literature typeData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 41 citations 41 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
visibility 107visibility views 107 download downloads 163 Powered bymore_vert Universitat Politècn... arrow_drop_down Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledgeArticle . 2011Full-Text: http://hdl.handle.net/2117/15846Data sources: Bielefeld Academic Search Engine (BASE)Recolector de Ciencia Abierta, RECOLECTAArticleData sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAConference object . 2010 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAArticle . 2011Data sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAArticle . 2011 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAUPCommons. Portal del coneixement obert de la UPCArticle . 2011Data sources: UPCommons. Portal del coneixement obert de la UPChttp://dx.doi.org/10.1016/j.eg...Other literature typeData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2017 SpainPublisher:Elsevier BV Funded by:EC | ShaleXenvironmenTEC| ShaleXenvironmenTAuthors: Gheibi, Sohrab; Holt, Rune M.;Vilarrasa, Víctor;
Vilarrasa, Víctor
Vilarrasa, Víctor in OpenAIREhandle: 10261/156423
Fluid injection operations, such as CO2 storage and enhanced oil recovery (EOR), imply reservoir pressurization, which changes the effective and total stresses due to poroelastic effects. These stress changes control the geomechanical stability of discontinuities like faults and fractures. Though the effect of these pre-existing discontinuities on stress path is sometimes neglected, the stress state is altered around them. We investigate the effect of a fault on the stress path evolution when pressurizing a reservoir using an in-house hybrid FEM-DEM code called “MDEM”. Simulation results indicate that the stress path is affected by the presence of faults considered to deform elastically, especially in the vicinity of the fault in the reservoir-caprock interfaces. The stress path perturbation is caused by the shear deformation of the fault plane, which is different in the reservoir and the caprock sections. Actually, the magnitude and the extension of the stress path perturbation around a fault become larger for faults with lower shear stiffness. The upper hanging wall and the lower footwall of the fault in the reservoir-caprock interface experience a higher stress path in the horizontal and the vertical directions. Furthermore, the stress paths decrease (negative in the vertical direction) in the upper footwall and the lower hanging wall in the reservoir-caprock interfaces. The fault effect on the stress path increases as the aspect ratio of the reservoir becomes lower. Moreover, the results indicated that both the caprock and the reservoir in the footwall experience a greater change for lower Poisson's ratio of the caprock. These stress changes are independent of the in situ stress regime as long as the fault deforms elastically. However, the impact of the stress path perturbation on the stability of the reservoir and the caprock is different in a compressional (reverse faulting) and an extensional (normal faulting) stress regimes. The stress state becomes less stable in the vicinity of the fault in the reservoir and in the caprock in a compressional stress regime than in an extensional stress regime. Therefore, a compressional stress regime leads to a less stable situation due to the fault effect on the evolution of the stress path. Overall, the presence of faults alters the stress state around them, which may lead to a stress state that is closer to failure conditions than predicted by models that do not explicitly include faults. © 2017 Elsevier Ltd This publication has been produced with partial support from the BIGCCS Centre, performed under the Norwegian research program Centres for Environment-friendly Energy Research (FME). The first two authors acknowledge the following partners for their contributions: Gassco, Shell, Statoil, TOTAL, ENGIE, and the Research Council of Norway (193816/S60). V.V. acknowledges financial support from the “TRUST” project (European Community's Seventh Framework Programme FP7/2007-2013 under grant agreement no. 309607) and from “FracRisk” project (European Community's Horizon 2020 Framework Programme H2020-EU.3.3.2.3 under grant agreement no. 640979). Authors are also grateful to SINTEF Petroleum Research provding the MDEM code. Peer reviewed
International Journa... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAArticle . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAInternational Journal of Greenhouse Gas ControlArticle . 2017 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 20 citations 20 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
visibility 33visibility views 33 download downloads 166 Powered bymore_vert International Journa... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAArticle . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAInternational Journal of Greenhouse Gas ControlArticle . 2017 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2021 Spain, Spain, France, SpainPublisher:American Geophysical Union (AGU) Funded by:EC | GEoREST, ANR | eLabo, EC | GEOTHERMICA +1 projectsEC| GEoREST ,ANR| eLabo ,EC| GEOTHERMICA ,DFGAuthors:Víctor Vilarrasa;
Víctor Vilarrasa
Víctor Vilarrasa in OpenAIREMaarten W. Saaltink;
Maarten W. Saaltink;Maarten W. Saaltink
Maarten W. Saaltink in OpenAIREFrancesco Parisio;
+3 AuthorsFrancesco Parisio
Francesco Parisio in OpenAIREVíctor Vilarrasa;
Víctor Vilarrasa
Víctor Vilarrasa in OpenAIREMaarten W. Saaltink;
Maarten W. Saaltink;Maarten W. Saaltink
Maarten W. Saaltink in OpenAIREFrancesco Parisio;
Francesco Parisio
Francesco Parisio in OpenAIRESilvia De Simone;
Silvia De Simone
Silvia De Simone in OpenAIREHaiqing Wu;
Haiqing Wu;Haiqing Wu
Haiqing Wu in OpenAIREAbstractDisplaced faults crossing the reservoir could significantly increase the induced earthquake frequency in geo‐energy projects. Understanding and predicting the stress variation in such cases is essential to minimize the risk of induced seismicity. Here, we adopt the inclusion theory to develop an analytical solution for the stress response to pore pressure variations within the reservoir for both permeable and impermeable faults with offset ranging from zero to the reservoir thickness. By analyzing fault stability changes due to reservoir pressurization/depletion under different scenarios, we find that (1) the induced seismicity potential of impermeable faults is always larger than that of permeable faults under any initial and injection conditions—the maximum size of the fault undergoing failure is 3–5 times larger for impermeable than for permeable faults; (2) stress concentration at the corners results in the occurrence of reversed slip in normal faults with a normal faulting stress regime; (3) while fault offset has no impact on the slip potential for impermeable faults, the slip potential increases with the offset for permeable faults, which indicates that non‐displaced permeable faults constitute a safer choice for site selection; (4) an impermeable fault would rupture at a lower deviatoric stress, and at a smaller pressure buildup than a permeable one; and (5) the induced seismicity potential is overestimated and the injectivity underestimated if the stress arching (i.e., the poromechanical coupling) is neglected. This analytical solution is a useful tool for site selection and for supporting decision making during the lifetime of geo‐energy projects.
Hyper Article en Lig... arrow_drop_down Archive Ouverte de l'Université Rennes (HAL)Article . 2021Full-Text: https://insu.hal.science/insu-03116199Data sources: Bielefeld Academic Search Engine (BASE)Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledgeArticle . 2021License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://insu.hal.science/insu-03116199Data sources: Bielefeld Academic Search Engine (BASE)Journal of Geophysical Research Solid EarthArticle . 2021 . Peer-reviewedLicense: CC BYData sources: CrossrefRecolector de Ciencia Abierta, RECOLECTAArticle . 2021 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAArticle . 2021 . Peer-reviewedLicense: CC BYData sources: Recolector de Ciencia Abierta, RECOLECTAUPCommons. Portal del coneixement obert de la UPCArticle . 2021 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCInstitut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)Journal of Geophysical Research Solid EarthArticle . 2021 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2020jb020436&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 14 citations 14 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
visibility 86visibility views 86 download downloads 209 Powered bymore_vert Hyper Article en Lig... arrow_drop_down Archive Ouverte de l'Université Rennes (HAL)Article . 2021Full-Text: https://insu.hal.science/insu-03116199Data sources: Bielefeld Academic Search Engine (BASE)Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledgeArticle . 2021License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2021Full-Text: https://insu.hal.science/insu-03116199Data sources: Bielefeld Academic Search Engine (BASE)Journal of Geophysical Research Solid EarthArticle . 2021 . Peer-reviewedLicense: CC BYData sources: CrossrefRecolector de Ciencia Abierta, RECOLECTAArticle . 2021 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAArticle . 2021 . Peer-reviewedLicense: CC BYData sources: Recolector de Ciencia Abierta, RECOLECTAUPCommons. Portal del coneixement obert de la UPCArticle . 2021 . Peer-reviewedLicense: CC BYData sources: UPCommons. Portal del coneixement obert de la UPCInstitut National de la Recherche Agronomique: ProdINRAArticle . 2021Data sources: Bielefeld Academic Search Engine (BASE)Journal of Geophysical Research Solid EarthArticle . 2021 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2020jb020436&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2015 Switzerland, United StatesPublisher:Wiley Authors:Víctor Vilarrasa;
Víctor Vilarrasa; Jonny Rutqvist;Víctor Vilarrasa
Víctor Vilarrasa in OpenAIREAntonio Pio Rinaldi;
+1 AuthorsAntonio Pio Rinaldi
Antonio Pio Rinaldi in OpenAIREVíctor Vilarrasa;
Víctor Vilarrasa; Jonny Rutqvist;Víctor Vilarrasa
Víctor Vilarrasa in OpenAIREAntonio Pio Rinaldi;
Antonio Pio Rinaldi;Antonio Pio Rinaldi
Antonio Pio Rinaldi in OpenAIREdoi: 10.1002/ghg.1486
AbstractThermo‐mechanical effects are important in geologic carbon storage because CO2 will generally reach the storage formation colder than the rock, inducing thermal stresses. Capillary functions, i.e., retention and relative permeability curves, control the CO2 plume shape, which may affect overpressure and thus, caprock stability. To analyze these thermal and capillary effects, we numerically solve non‐isothermal injection of CO2 in deformable porous media considering the In Salah, Algeria, CO2 storage site. We find that changes in the capillary functions have a negligible effect on overpressure and thus, caprock stability is not affected by capillary effects. However, we show that for the strike slip stress regime prevalent at In Salah, stability decreases in the lowest parts of the caprock during injection due to cooling‐induced thermal stresses. Simulations show that shear slip along pre‐existing fractures may take place in the cooled region, whereas tensile failure is less likely to occur. Indeed, only the injection zone and the lowest tens of meters of the 900‐m‐thick caprock at In Salah might be affected by cooling effects, which would thus not jeopardize the overall sealing capacity of the caprock. Furthermore, faults are likely to remain stable far away from the injection well because outside the cooled region the injection‐induced stress changes are not sufficient to exceed the anticipated shear strength of minor faults. Nevertheless, we recommend that thermal effects should be considered in the site characterization and injection design of future CO2 injection sites to assess caprock stability and guarantee a permanent CO2 storage.
University of Califo... arrow_drop_down University of California: eScholarshipArticle . 2015Full-Text: https://escholarship.org/uc/item/6pv2v2g7Data sources: Bielefeld Academic Search Engine (BASE)Greenhouse Gases Science and TechnologyArticleLicense: publisher-specific, author manuscriptData sources: UnpayWalleScholarship - University of CaliforniaArticle . 2015Data sources: eScholarship - University of CaliforniaGreenhouse Gases Science and TechnologyArticle . 2015 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: CrossrefeScholarship - University of CaliforniaArticle . 2015Data sources: eScholarship - University of Californiaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/ghg.1486&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 42 citations 42 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert University of Califo... arrow_drop_down University of California: eScholarshipArticle . 2015Full-Text: https://escholarship.org/uc/item/6pv2v2g7Data sources: Bielefeld Academic Search Engine (BASE)Greenhouse Gases Science and TechnologyArticleLicense: publisher-specific, author manuscriptData sources: UnpayWalleScholarship - University of CaliforniaArticle . 2015Data sources: eScholarship - University of CaliforniaGreenhouse Gases Science and TechnologyArticle . 2015 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: CrossrefeScholarship - University of CaliforniaArticle . 2015Data sources: eScholarship - University of Californiaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1002/ghg.1486&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object 2024 SpainPublisher:Copernicus GmbH Authors:Victor Vilarrasa;
Victor Vilarrasa
Victor Vilarrasa in OpenAIREHaiqing Wu;
Haiqing Wu
Haiqing Wu in OpenAIREIman Vaezi;
Iman Vaezi
Iman Vaezi in OpenAIRESri Kalyan Tangirala;
+3 AuthorsSri Kalyan Tangirala
Sri Kalyan Tangirala in OpenAIREVictor Vilarrasa;
Victor Vilarrasa
Victor Vilarrasa in OpenAIREHaiqing Wu;
Haiqing Wu
Haiqing Wu in OpenAIREIman Vaezi;
Iman Vaezi
Iman Vaezi in OpenAIRESri Kalyan Tangirala;
Auregan Boyet; Silvia De Simone;Sri Kalyan Tangirala
Sri Kalyan Tangirala in OpenAIREIman R. Kivi;
Iman R. Kivi
Iman R. Kivi in OpenAIREhandle: 10261/311450
Geo-energies, such as geothermal energy, geologic carbon storage, and subsurface energy storage, will play a relevant role in reaching carbon neutrality and allowing net-carbon removal towards the midcentury. Geo-energies imply fluid injection into and/or production from the subsurface, which alter the initial effective stress state and may destabilize fractures and faults, thereby inducing seismicity. Understanding the processes that control induced seismicity is paramount to develop reliable forecasting tools to manage induced earthquakes and keep them below undesired levels. Accurately modeling the processes that occur during fracture/fault slip leading to induced seismicity is challenging because coupled thermo-hydro-mechanical-chemical (THMC) processes interact with each other: (1) fluid injection causes pore pressure buildup that changes total stress and deforms the rock, (2) deformation leads to permeability changes that affect pore pressure diffusion, (3) fluids reach the injection formation at a colder temperature than that of the rock, which cools down the vicinity of the well, causing changes in the fluid properties (density, viscosity, enthalpy, heat capacity) and cooling-induced stress reduction, (4) the injected fluids are not in chemical equilibrium with the host rock, leading to geochemical reactions of mineral dissolution/precipitation that may alter rock properties, in particular, the shear strength. In the framework of GEoREST (www.georest.eu), a Starting Grant from the European Research Council (ERC), we aim at developing forecasting tools for injection-induced seismicity by developing methodologies to efficiently simulate the coupled THMC processes that occur as a result of fluid injection, which allows us to improve the understanding of the mechanisms that trigger induced seismicity. To this end, we use the fully coupled finite element method software CODE_BRIGHT, which includes capabilities like friction following the Mohr-Coulomb failure criterion with strain weakening and dilatancy, enabling simulations of fracture/fault reactivation. Our investigations have already contributed to the understanding of the processes that induced the seismicity at the Enhanced Geothermal System (EGS) at Basel, Switzerland, at the Castor Underground Gas Storage, Spain, and the reservoir-induced seismicity at Nova Ponte, Brazil. To achieve scalability and speed up the calculations to eventually manage induced seismicity in real time, we intend to incorporate efficient state-of-the-art linear solvers, like HYPRE and PETSc, in CODE_BRIGHT.
Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAConference object . 2022 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
visibility 100visibility views 100 download downloads 92 Powered bymore_vert Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAConference object . 2022 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/egusphere-gc11-solidearth-32&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2013 SpainPublisher:Elsevier BV Funded by:EC | MUSTANG, EC | PANACEAEC| MUSTANG ,EC| PANACEAAuthors:Jesús Carrera;
Jesús Carrera
Jesús Carrera in OpenAIREVíctor Vilarrasa;
Víctor Vilarrasa;Víctor Vilarrasa
Víctor Vilarrasa in OpenAIRESebastià Olivella;
Sebastià Olivella
Sebastià Olivella in OpenAIREhandle: 10261/92978
Clear understanding of coupled hydromechanical effects, such as ground deformation, induced microseismicity and fault reactivation, will be crucial to convince the public that geologic carbon storage is secure. These effects depend on hydromechanical properties, which are usually determined at metric scale. However, their value at the field scale may differ in orders of magnitude. To address this shortcoming, we propose a hydromechanical characterization test to estimate the hydromechanical properties of the aquifer and caprock at the field scale. We propose injecting water at high pressure and, possibly, low temperature while monitoring fluid pressure and rock deformation. Here, we analyze the problem and perform numerical simulations and a dimensional analysis of the hydromechanical equations to obtain curves for overpressure and vertical displacement as a function of the volumetric strain term. We find that these curves do not depend much on the Poisson ratio, except for the dimensionless vertical displacement at the top of the caprock, which does. We can then estimate the values of the Young's modulus and the Poisson ratio of the aquifer and the caprock by introducing field measurements in these plots. Hydraulic parameters can be determined from the interpretation of fluid pressure evolution in the aquifer. Reverse-water level fluctuations are observed, i.e. fluid pressure drops in the caprock as a result of the induced deformation that undergoes the aquifer-caprock system when injecting in the aquifer. We find that induced microseismicity is more likely to occur in the aquifer than in the caprock and depends little on their stiffness. Monitoring microseismicity is a useful tool to track the opening of fractures. The propagation pattern depends on the stress regime, i.e. normal, strike slip or reverse faulting. The onset of microseismicity in the caprock can be used to define the maximum sustainable injection pressure to ensure a permanent CO2 storage. This work has been funded by Fundación Ciudad de la Energía (Spanish Government) (www.ciuden.es) through the project ALM/09/018 and by the European Union through the “European Energy Programme for Recovery” and the Compostilla OXYCFB300 project. We also want to acknowledge the financial support received from the ‘MUSTANG’ (www.co2mustang.eu) and ‘PANACEA’ (www.panacea-co2.org) projects (from the European Community's Seventh Framework Programme FP7/2007-2013 under grant agreements n° 227286 and n° 282900, respectively). Peer reviewed
International Journa... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAArticle . 2013 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAInternational Journal of Greenhouse Gas ControlArticle . 2013 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefInternational Journal of Greenhouse Gas ControlArticle . 2013Data sources: SESAM Publication Database - FP7 ENERGYhttp://dx.doi.org/10.1016/j.ij...Other literature typeData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 61 citations 61 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
visibility 27visibility views 27 download downloads 145 Powered bymore_vert International Journa... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAArticle . 2013 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAInternational Journal of Greenhouse Gas ControlArticle . 2013 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefInternational Journal of Greenhouse Gas ControlArticle . 2013Data sources: SESAM Publication Database - FP7 ENERGYhttp://dx.doi.org/10.1016/j.ij...Other literature typeData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object 2023 SpainPublisher:Copernicus GmbH Authors:Rotman Criollo Manjarrez;
Rotman Criollo Manjarrez
Rotman Criollo Manjarrez in OpenAIREVíctor Vilarrasa;
Víctor Vilarrasa
Víctor Vilarrasa in OpenAIREAlejandro Orfila;
Angels Fernández-Mora;Alejandro Orfila
Alejandro Orfila in OpenAIREhandle: 10261/311397
Coastal areas are more densely populated than inland areas and present faster rates of population increase and urbanization. This trend is expected to continue in the coming decades, and thus, the demand of natural resources in coastal areas, such as water and energy resources, increasing the pressure and impact on the environment, superposed to the effects of climate change. Currently, in Europe, the demand for heating in buildings and businesses outnumbers the demand for cooling. However, the latter is gradually catching up due to rising demand for air cooling or refrigeration for industry such as food, technological and medical supplies. The energy required to cool buildings in Europe is expected to increase by more than 70% by 2030, while energy used to heat buildings may decrease by 30% (UE, 2018). Low Temperature Geothermal Energy (LTGE) is most likely the green energy production method for heating and cooling with the highest potential to provide affordable and clean energy and meet the CO2-emissions reduction goals of the Green Deal. Despite advances on LTGE technologies, the efficiency of these systems remains inherently sensitive to changes in hydrodynamics and the media (e.g., changes in the groundwater thermal regime). Groundwater, on the other hand, is the world's largest freshwater resource, and it is especially important in coastal areas because interactions between aquifer systems and sea water may lead to salinization and resource loss. Because geothermal systems and coastal aquifers interact directly, specially at groundwater discharge areas, it is clear that a better understanding of the potential interactions of geothermal systems with current and prospective coastal aquifer processes is essential for their design and foreseeing potential environmental effects. To address these issues, we model variable-density groundwater coupled with heat transport to simulate the long-term evolution of groundwater salinity and aquifer thermal energy discharge. We find that the heating/cooling-induced water density variations affect the seawater intrusion. Understanding the behavior of the groundwater system is required to ensure sustainable water, energy, and coastal ecosystem management.
Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAConference object . 2023 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
visibility 38visibility views 38 download downloads 71 Powered bymore_vert Recolector de Cienci... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAConference object . 2023 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2017 Switzerland, SpainPublisher:Elsevier BV Funded by:EC | ShaleXenvironmenT, EC | FracRisk, EC | EPFL FELLOWSEC| ShaleXenvironmenT ,EC| FracRisk ,EC| EPFL FELLOWSAuthors:Víctor Vilarrasa;
Víctor Vilarrasa;Víctor Vilarrasa
Víctor Vilarrasa in OpenAIRELyesse Laloui;
Mehdi Zeidouni; +1 AuthorsLyesse Laloui
Lyesse Laloui in OpenAIREVíctor Vilarrasa;
Víctor Vilarrasa;Víctor Vilarrasa
Víctor Vilarrasa in OpenAIRELyesse Laloui;
Mehdi Zeidouni; Gil Bustarret;Lyesse Laloui
Lyesse Laloui in OpenAIREhandle: 10261/152240
Fluid injection in the subsurface has significantly increased over the last decades. Since fluid injection causes pressure buildup, reducing effective stresses, shear failure conditions may eventually occur, inducing microseismic and seismic events. Anticipating felt induced earthquakes that may be triggered in undetected faults is crucial for the success of fluid injection projects. We propose a methodology to detect and locate such low-permeability faults to reduce the risk of inducing felt seismic events. The methodology consists in using diagnostic plots to identify the divergence time between the logarithmic derivative of overpressure evolution measured in the field and the one that would correspond to an aquifer including the previously identified heterogeneities. We apply the proposed methodology to water and CO2 injection through a horizontal well in a confined aquifer that has faults parallel to the well. We numerically obtain type curves that allow locating low-permeability faults once the divergence time is determined from the logarithmic derivative of overpressure for both water and CO2 injection. Furthermore, we illustrate how to apply the methodology to detect multiple low-permeability faults. To perform a proper pressure management based on fault stability analysis to minimize the risk of inducing felt seismic events, the proposed methodology should be complemented with other multidisciplinary tools. This methodology can be extended to other geological settings and be used in several fluid injection applications. © 2017 Elsevier Ltd V.V. acknowledges support from the ‘EPFL Fellows’ fellowship programme co-funded by Marie Curie, FP7 Grant agreement no. 291771. This work was funded in part by the “TRUST” project (European Community’s Seventh Framework Programme FP7/2007-2013 under grant agreement n 309607) and from “FracRisk” project (European Community’s Horizon 2020 Framework Programme H2020-EU.3.3.2.3 under grant agreement n 640979). Technical review comments of Dr. Paul Hsieh (USGS) are greatly appreciated. Peer reviewed
International Journa... arrow_drop_down International Journal of Greenhouse Gas ControlArticleLicense: Elsevier Non-CommercialData sources: UnpayWallRecolector de Ciencia Abierta, RECOLECTAArticle . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAInternational Journal of Greenhouse Gas ControlArticle . 2017 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefInternational Journal of Greenhouse Gas ControlArticle . 2017 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 5 citations 5 popularity Top 10% influence Average impulse Average Powered by BIP!
visibility 38visibility views 38 download downloads 120 Powered bymore_vert International Journa... arrow_drop_down International Journal of Greenhouse Gas ControlArticleLicense: Elsevier Non-CommercialData sources: UnpayWallRecolector de Ciencia Abierta, RECOLECTAArticle . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAInternational Journal of Greenhouse Gas ControlArticle . 2017 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefInternational Journal of Greenhouse Gas ControlArticle . 2017 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Journal , Other literature type 2013 SpainPublisher:Elsevier BV Funded by:EC | PANACEA, EC | MUSTANGEC| PANACEA ,EC| MUSTANGAuthors: Rötting, Tobias;Carrera, Jesús;
Carrera, Jesús
Carrera, Jesús in OpenAIREVilarrasa, Víctor;
Silva, Orlando; +1 AuthorsVilarrasa, Víctor
Vilarrasa, Víctor in OpenAIRERötting, Tobias;Carrera, Jesús;
Carrera, Jesús
Carrera, Jesús in OpenAIREVilarrasa, Víctor;
Silva, Orlando;Vilarrasa, Víctor
Vilarrasa, Víctor in OpenAIREOlivella, Sebastià;
Olivella, Sebastià
Olivella, Sebastià in OpenAIREhandle: 10261/93784 , 10261/74308
Póster presentado en la 7th Trondheim Conference on CO2 Capture, Transport and Storage, celebrada en Trondheim (Noruega) del 4 al 6 de junio de 2013. It is usually assumed that CO2 for geological storage should be injected in supercritical (SC) state (i.e. p>7.382 MPa and T>31.04 ºC) to avoid thermal stresses or phase changes in the injection tubing or in the formation. Injecting CO2 in liquid phase would be desirable because its density is much larger than that of either gaseous or supercritical CO2. Since most of the wellhead pressure is required for overcoming buoyancy forces in the wellbore, increasing density in the wellbore translates into a parallel reduction of the required wellhead pressure. Yet, most projects contemplate injection in either SC or gaseous phase because of concerns about (1) phase changes in the wellbore, or (2) thermal stresses in the reservoir caused by the injection of CO2 much colder than the reservoir. We perform numerical simulations to analyze the thermodynamic evolution of CO2 and the thermo-hydro-mechanical response of the formation and the caprock to liquid CO2 injection. We find that injecting CO2 in liquid state is energetically more efficient than in SC state because liquid CO2 is denser than SC CO2, leading to a lower overpressure not only at the wellhead, but also in the reservoir because a smaller fluid volume is displaced. Cold CO2 injection cools down the formation around the injection well. Further away, CO2 equilibrates thermally with the medium in an abrupt front. A slight temperature increase occurs in the SC CO2 region that is due to the exothermal dissolution of CO2 into the brine. The liquid CO2 region close to the injection well advances far behind the SC CO2 interface. While the SC CO2 region is dominated by gravity override, the liquid CO2 region displays a steeper front because viscous forces dominate (liquid CO2 is not only denser, but also more viscous than SC CO2). The temperature decrease close to the injection well induces a stress reduction due to thermal contraction of the media. This can lead to shear slip of pre-existing fractures in the aquifer for large temperature contrasts in stiff rocks, which could enhance injectivity. In contrast, the mobilized friction angle in the seals is not increased when injecting liquid CO2 and it is even reduced in stress regimes where the maximum principal stress is the vertical. We conclude that injecting CO2 in liquid state rather than SC is favourable for several reasons: (1) this injection strategy is energetically advantageous, (2) no transformation operation or only low energy consumption conditioning operations are necessary, (3) a smaller compression work at the wellhead is necessary because of the smaller compressibility of liquid CO2, (4) since liquid CO2 is denser than SC CO2, liquid CO2 injection induces a lower overpressure also at within the aquifer because a smaller amount of fluid is displaced and (5) the caprock mechanical stability is improved. Peer reviewed
International Journa... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAConference object . 2013 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAArticle . 2013 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAInternational Journal of Greenhouse Gas ControlArticle . 2013 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefInternational Journal of Greenhouse Gas ControlArticle . 2013Data sources: SESAM Publication Database - FP7 ENERGYInternational Journal of Greenhouse Gas ControlArticle . 2013 . Peer-reviewedData sources: Digital.CSIChttp://dx.doi.org/10.1016/j.ij...Other literature typeData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 133 citations 133 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
visibility 59visibility views 59 download downloads 233 Powered bymore_vert International Journa... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAConference object . 2013 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTARecolector de Ciencia Abierta, RECOLECTAArticle . 2013 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAInternational Journal of Greenhouse Gas ControlArticle . 2013 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefInternational Journal of Greenhouse Gas ControlArticle . 2013Data sources: SESAM Publication Database - FP7 ENERGYInternational Journal of Greenhouse Gas ControlArticle . 2013 . Peer-reviewedData sources: Digital.CSIChttp://dx.doi.org/10.1016/j.ij...Other literature typeData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Journal 2017 Spain, SwitzerlandPublisher:Elsevier BV Funded by:EC | EPFL FELLOWSEC| EPFL FELLOWSAuthors:Lyesse Laloui;
Lyesse Laloui
Lyesse Laloui in OpenAIREVíctor Vilarrasa;
Víctor Vilarrasa;Víctor Vilarrasa
Víctor Vilarrasa in OpenAIRERoman Y. Makhnenko;
+1 AuthorsRoman Y. Makhnenko
Roman Y. Makhnenko in OpenAIRELyesse Laloui;
Lyesse Laloui
Lyesse Laloui in OpenAIREVíctor Vilarrasa;
Víctor Vilarrasa;Víctor Vilarrasa
Víctor Vilarrasa in OpenAIRERoman Y. Makhnenko;
Roman Y. Makhnenko;Roman Y. Makhnenko
Roman Y. Makhnenko in OpenAIREhandle: 10261/156430
CO2 injection in extensive saline aquifers that present no faults is unlikely to damage the caprock sealing capacity. In contrast, CO2 injection in closed reservoirs will induce a large pressure buildup that may reactivate the low-permeable faults that bound the reservoir. However, the vast majority of CO2 storage formations will be extensive saline aquifers bounded by a limited number of low-permeable faults. Such storage formations have received little attention and are the focus of this study. We model an extensive aquifer bounded by a heterogeneous low-permeable fault on one side and having open boundaries on the other sides. Simulation results show that the storage formation pressurizes between the injection well and the low-permeable fault, causing total stress changes and effective stress reduction around the fault. These changes lead to yielding of the fault core that is next to the lower half of the storage formation when injecting in the hanging wall. The yield of the fault core would induce a sequence of microseismic events with accumulated seismic moment equivalent to an earthquake of magnitude 1.7, which would not be felt on the ground surface and would not enhance permeability of the ductile clay-rich fault. © 2017 The Authors. V.V. acknowledges support from the ‘EPFL Fellows’ fellowship programme co-funded by Marie Curie, FP7 Grant agreement no. 291771. R.M. activities are sponsored by SCCER-SoE (Switzerland) grant KTI.2013.288 and Swiss Federal Office of Energy (SFOE) project CAPROCK #810008154. Peer reviewed
Energy Procedia arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAConference object . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 23 citations 23 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
visibility 19visibility views 19 download downloads 63 Powered bymore_vert Energy Procedia arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAConference object . 2017 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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