Abstract We study how the normal stiffness and permeability of a realistic rough fracture at field scale are linked evolve during its closure up to percolation threshold. base our approach on well‐established self‐affine geometric model for roughness, which has proven be relevant proxy from laboratory multi‐kilometer scales. explore implications apertures in reservoir‐scale open channels. build finite element using MOOSE/GOLEM framework conduct numerical flow‐through experiments 256 granite...

Abstract. Theory and numerical implementation describing groundwater flow the transport of heat solute mass in fully saturated fractured rocks with elasto-plastic mechanical feedbacks are developed. In our formulation, fractures considered as being lower dimension than hosting deformable porous rock we consider their hydraulic apertures scaling parameters to ensure continuous exchange fluid energy within fracture–solid matrix system. The coupled system equations is implemented a new...

Abstract. We present three-dimensional (3-D) models that describe the present-day thermal and rheological state of lithosphere greater Kenya rift region aiming at a better understanding evolution, with particular focus on plume–lithosphere interactions. The key methodology applied is 3-D integration diverse geological geophysical observations using gravity modelling. Accordingly, resulting lithospheric-scale density model consistent (i) reviewed descriptions lithological variations in...

This study deals with numerical analysis of fault slip behaviour within deep faulted geothermal reservoirs during injection and pro- duction fluid. A coupled approach for thermo-hydro-mechanical process modelling is used to describe quantify the effects thermoelastic stress on tendency. The results show that tendency a can increase when cold fluid front reaches due thermal enhancement. Magnitudes in depend temperature dip angle fault, under specific configurations, may lead reactivation fault.

The Upper Rhine Graben (URG) is an active rift with a high geothermal potential. Despite being well-studied area, the three-dimensional interaction of main controlling factors thermal and hydraulic regime still not fully understood. Therefore, we have used data-based 3D structural model lithological configuration central URG for some conceptual numerical experiments coupled simulations fluid heat transport. To assess influence faults bordering graben on deep field, carried out sensitivity...

In subsurface projects where the host rock is of low permeability, fractures play an important role in fluid circulation. Both geometrical and mechanical properties fracture are relevant to permeability fracture. To evaluate this relationship, we numerically generated self-affine reproducing scaling relationship power spectral density (PSD) measured surfaces. The were then subjected a uniform stepwise increase normal stress. A fast Fourier transform (FFT)-based elastic contact model was used...

Abstract. During the Vendenheim deep geothermal project (Strasbourg Eurometropole, France), large induced seismic events led to arrest of project. Two important features seismicity were unexpected: distance wells a cluster (4–5 km) and occurrence largest event Mlv3. 9 at bottom wells, six months after shut-in. To better understand natural hydro-thermal conditions site, we develop within framework DT-GEO (Horizon Europe) simplified large-scale model (8 km × 8 6 area. We aim performing...

The southern Central Andes (29°S-39°S) is a key area for understanding the interplay between oceanic plate and continental its resulting surface expressions in subduction zone.  In this area, dip of changes from normal (~30° 33°S 35°S) south to flat (< 5° 29° 33°S) north. This region displays remarkable along- across- strike variations both tectonic seismic deformation patterns. context, relative...

Continental rifting and breakup as well plate convergence collision create specific geophysical configurations with characteristic thermal fields which in turn lead to rheological settings. Three-dimensional data-integrated models demonstrate how of the Earth’s crust uppermost mantle are depending on tectonic setting. While spatial variation conductivities, variable contributions radiogenic heat response crustal thickness composition, average geothermal gradients lithosphere main...

Geothermal applications, like other Solid Earth studies, suffer from different sources of uncertainty. These may arise, among others, structural variations, and material properties. Joint considerations these are challenging since taking changes for process simulations into account requires a mesh the given configuration. For geological model generation, either implicit or explicit techniques available. Implicit models would allow an easy adaptation features but pose challenges in...

Robust predictions of in-situ stress states are essential for the safety assessment and long-term stability nuclear waste disposal sites. However, these inherently uncertain due to variability in geological parameters material properties as well uncertainties model calibration data. Thus, a large number simulations would be required complete investigation which is not feasible high numerical resolution with several million discretization points. An alternative classical full order solutions...

The relationship between the long-term strength of lithosphere and seismic hazard has remained a fundamental, yet open question in geosciences. lithosphere's rheology controls its deformation patterns, playing crucial role understanding spatial temporal distribution seismicity given region. One primary factors influencing rheological state is thermal regime, which strongly affected by heterogeneous properties both crust lithospheric mantle, as well three-dimensional interactions deeper...

Thermo-hydro-geochemical modelling is of great economic and scientific importance for the implementation geothermal projects, where understanding effects fluid injection extraction on reservoir properties crucial. From an operational point view, changing temperature reservoirs can intensify both biotic abiotic water-rock interactions. The latter, including mineral dissolution precipitation processes, alter rock’s structure and, consequently, its hydraulic transport such as porosity...

The mean stress state of the continental lithosphere is thought to align with stresses generated by gravitational potential energy at mid-oceanic ridges. This equilibrium manifested in an average crust thickness ~40 km and elevations a few hundred meters as suggested Airy type compensation geoid height data 1–3. Our recent data-driven thermomechanical model Alpine-Himalayan collision zone (AHCZ) that this balance has fundamental thermodynamical meaning such maintains critical...

The Vendenheim geothermal project, located at the north of Strasbourg France, in Upper Rhine Graben, was halted due to occurrence two clusters induced seismic events. One these is far from wells (4-5 km). Therefore, framework DT-GEO project (Horizon Europe), we developed a 3D thermo-hydro-mechanical (THM) model have better idea natural convective hydro-thermal conditions this reservoir and propose possible mechanisms that triggered geometry obtained GEORG platform, including main geological...

The Canary Islands stand out as a prime region within Spanish territory with significant potential for harnessing high enthalpy geothermal resources due to their active volcanic activity. La Palma, one of the youngest islands in archipelago, has witnessed at least seven eruptions over past 500 years, most recent occurring 2021. Despite these compelling signs, development power plants not been pursued on island, mainly because financial risk involved such project and lack detailed geophysical...

High-Temperature Aquifer Thermal Energy Storage (HT-ATES) can provide flexibility to the heat provision systems as required by transient fluctuation in thermal energy demand. Such multicomponent-system concepts are currently experiencing increasing attention German Molasse Basin (southern Germany), where, HT-ATES compose an essential element of systems, contributing towards transition decarbonized supply. In this work, we highlight example from greater area Munich analyze efficient...

The Pannonian part of Croatia has favorable geothermal characteristics that promote the development natural thermal springs (temperatures up to 65 °C) in around 20 localities. These waters have been used for millennia and are basis tourism health care centers. Due an increase water demand, higher quantities were abstracted threatening availability resources. generally intermediate scale, topographically driven, hydrothermal systems fed by local meteoric with: i) recharge areas...