MEchanics GAthering –MEGA- Seminar: 3D Geomechanical Modelling of CO2 storage with focus on Fault Stability
Event details
| Date | 21.03.2024 |
| Hour | 16:15 › 17:15 |
| Speaker | Emil Gallyamov (GEL / LSMS, EPFL) |
| Location | Online |
| Category | Conferences - Seminars |
| Event Language | English |
Abstract:
Underground CO2 storage represents the most viable Negative Emission Technology capable of significantly reducing atmospheric carbon dioxide levels. Ideal reservoirs for CO2 sequestration are thick highly-porous and highly-permeable formations ensuring a high storage capacity at industrially meaningful injection rates (MtCO2/year). Selecting a suitable CO2 storage site requires thorough analysis of the geology, structure and hydrology of each reservoir. One of the critical concerns during this assessment is the potential for induced seismicity, particularly due to the presence of faults in the vicinity of the reservoir. To evaluate the mechanical stability of fault systems caused by changes in the hydro-mechanical state of a reservoir, extensive numerical modelling is employed.
This talk discusses the study of the suitability of a potential site for CO2 storage with a focus on mechanical stability of a fault system. For this purpose, a geomechanical simulator was developed that incorporates hydro-mechanical coupling and modelling fractures and faults discretely. The hydraulic component accounts for single-phase fluid flow in the bulk, as well as laminar flow along rock discontinuities. Meanwhile, the mechanical aspect incorporates poroelasticity in the bulk and considers contact and friction along fractures and faults.
By modelling the injection of CO2 into a potential 3D reservoir adjacent to a fault, predictions are made of the evolution of pressure and stress within the reservoir and the caprock. Moreover, the potential impact on the mechanical state of the fault is assessed. This geomechanical analysis contributes valuable insights to the process of site selection for safe and efficient CO2 storage.
Biography:
Emil R. Gallyamov is a Postdoctoral Researcher at the Geo-Energy and Computational Solid Mechanics Laboratories at EPFL. In his research, he focuses on the geomechanical effects of underground anthropogenic activities, such as alteration of the rock stress, hydraulic fracturing, fault reactivation, surface subduction, etc. He received his PhD in Mechanics at EPFL by studying and predicting mechanical behaviour of concrete structures undergoing alkali-silica reaction. Previously, he obtained his Masters degree in Geotechnical Engineering from Delft University of Technology in the Netherlands and Diploma in Civil Engineering in Ufa State Petroleum Technological University in Russia. Dr. Gallyamov's industry experience includes different positions in directional well drilling for oil & gas and spans over various locations comprising Siberia, Bolivia, Cuba and Gulf of Mexico.
Underground CO2 storage represents the most viable Negative Emission Technology capable of significantly reducing atmospheric carbon dioxide levels. Ideal reservoirs for CO2 sequestration are thick highly-porous and highly-permeable formations ensuring a high storage capacity at industrially meaningful injection rates (MtCO2/year). Selecting a suitable CO2 storage site requires thorough analysis of the geology, structure and hydrology of each reservoir. One of the critical concerns during this assessment is the potential for induced seismicity, particularly due to the presence of faults in the vicinity of the reservoir. To evaluate the mechanical stability of fault systems caused by changes in the hydro-mechanical state of a reservoir, extensive numerical modelling is employed.
This talk discusses the study of the suitability of a potential site for CO2 storage with a focus on mechanical stability of a fault system. For this purpose, a geomechanical simulator was developed that incorporates hydro-mechanical coupling and modelling fractures and faults discretely. The hydraulic component accounts for single-phase fluid flow in the bulk, as well as laminar flow along rock discontinuities. Meanwhile, the mechanical aspect incorporates poroelasticity in the bulk and considers contact and friction along fractures and faults.
By modelling the injection of CO2 into a potential 3D reservoir adjacent to a fault, predictions are made of the evolution of pressure and stress within the reservoir and the caprock. Moreover, the potential impact on the mechanical state of the fault is assessed. This geomechanical analysis contributes valuable insights to the process of site selection for safe and efficient CO2 storage.
Biography:
Emil R. Gallyamov is a Postdoctoral Researcher at the Geo-Energy and Computational Solid Mechanics Laboratories at EPFL. In his research, he focuses on the geomechanical effects of underground anthropogenic activities, such as alteration of the rock stress, hydraulic fracturing, fault reactivation, surface subduction, etc. He received his PhD in Mechanics at EPFL by studying and predicting mechanical behaviour of concrete structures undergoing alkali-silica reaction. Previously, he obtained his Masters degree in Geotechnical Engineering from Delft University of Technology in the Netherlands and Diploma in Civil Engineering in Ufa State Petroleum Technological University in Russia. Dr. Gallyamov's industry experience includes different positions in directional well drilling for oil & gas and spans over various locations comprising Siberia, Bolivia, Cuba and Gulf of Mexico.
Practical information
- General public
- Free
Organizer
- MEGA.Seminar Organizing Committee