Víctor Vilarrasa
Spanish National Research Council
Geothermal gradientSupercritical fluidGeologyEngineeringSeismologyFault (geology)Permeability (earth sciences)Geotechnical engineeringCaprockEuropean unionOverpressureSaline aquiferEuropean researchEnvironmental scienceMechanicsPetrologyAquiferPetroleum engineeringInduced seismicityStress (mechanics)
Publications 132
#1Víctor Vilarrasa (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 23
Last. L. Laloui
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#1Víctor VilarrasaH-Index: 23
#2Sohrab GheibiH-Index: 5
Last. Alexandre LavrovH-Index: 14
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#1Víctor VilarrasaH-Index: 23
#2Roman Y. MakhnenkoH-Index: 12
Last. Lyesse LalouiH-Index: 52
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Geologic carbon sequestration is a promising option to reduce carbon dioxide emissions to the atmosphere and mitigate climate change. The injected CO2 will reach the storage formation at a colder temperature than that of the host rock. This cold CO2 will cool down the caprock by conduction, which will induce thermal stress reduction and pressure changes that will affect caprock stability. We analyzed thermoporomechanical response of Swiss shale and found that the effective stress changes induced...
2 CitationsSource
#1Antonio Pio Rinaldi (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 24
#2Víctor Vilarrasa (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 23
Last. Frédéric Cappa (LBNL: Lawrence Berkeley National Laboratory)H-Index: 33
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Injection or withdrawal of fluid at depth may trigger felt seismicity. Such human‐induced seismicity is a key environmental concern related to the exploitation of natural underground resources. Thus, understanding how to avoid triggering felt earthquakes plays a crucial role in the success of underground anthropogenic activities, such as CO 2 geological storage. In this work, we conduct 3D simulations of injection‐triggered fault reactivation, in order to investigate the effects of well geometry...
48 CitationsSource
#1Víctor Vilarrasa (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 23
#2Jesús Carrera (CSIC: Spanish National Research Council)H-Index: 72
Zoback and Gorelick (1) highlight the importance of considering the potential for induced seismicity in geologic carbon storage (GCS) projects. We agree that site characterization is needed for safe CO2 storage; that is, without inducing large earthquakes (M > 4) that might jeopardize the stability and sealing capacity of caprock and faults (2).
9 CitationsSource
#1Víctor Vilarrasa (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 23
#2Jonny Rutqvist (LBNL: Lawrence Berkeley National Laboratory)H-Index: 65
Last. Antonio Pio Rinaldi (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 24
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Thermo‐mechanical effects are important in geologic carbon storage because CO 2 will generally reach the storage formation colder than the rock, inducing thermal stresses. Capillary functions, i.e., retention and relative permeability curves, control the CO 2 plume shape, which may affect overpressure and thus, caprock stability. To analyze these thermal and capillary effects, we numerically solve non‐isothermal injection of CO 2 in deformable porous media considering the In Salah, Algeria, CO 2...
31 CitationsSource
#1Víctor Vilarrasa (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 23
#2Lyesse Laloui (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 52
Thermal effects are an important component in the analysis of geologic carbon storage because the injected CO2 reaches the storage formation at a lower temperature than that of the reservoir rock. The main fear is related to the possibility that the shear slip that may occur within the reservoir due to cooling could propagate into the caprock, which could result in CO2 leakage. We model a baserock-reservoir-caprock system in a normal faulting stress regime using an axisymmetric model in which we...
17 CitationsSource
#1Víctor VilarrasaH-Index: 23
Last. Jesús Carrera RamírezH-Index: 4
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Carbon dioxide (CO2) storage in deep geological formations is considered a promising solution for mitigating CO2 emissions to the atmosphere. Currently, the emissions of this greenhouse gas as a result of hydrocarbon combustion for power generation exceed 30 Gt/yr. As a result of these emissions, the CO2 concentration in the atmosphere has increased from the pre-industrial level of 280 parts per million in volume (ppmv) to the current 400 ppm. This increasing CO2 concentration is affecting our c...
Zoback and Gorelick [(2012) Proc Natl Acad Sci USA 109(26):10164–10168] have claimed that geologic carbon storage in deep saline formations is very likely to trigger large induced seismicity, which may damage the caprock and ruin the objective of keeping CO2 stored deep underground. We argue that felt induced earthquakes due to geologic CO2 storage are unlikely because (i) sedimentary formations, which are softer than the crystalline basement, are rarely critically stressed; (ii) the least stabl...
112 CitationsSource
#1Silvia De SimoneH-Index: 6
#2Jesús CarreraH-Index: 72
Last. Víctor VilarrasaH-Index: 23
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Deep fluid injection is a necessary operation in several engineering sectors, like geothermal energy production, natural gas storage, CO2 storage, etc. The seismicity associated to these activities has, in some occasions, reached unexpected magnitude, raising public concern. Moreover, the occurrence of such seismicity after the injection shut-in pointed out the incompleteness of the knowledge and the inability of fully managing these processes. On the other hand, the growing attention toward cle...