Concept
Enhanced geothermal system
Related publications (58)
Solar-assisted clean steam generator, a cleaner production approach for sustainable healthcare facilities
Fernando Porté Agel, Mohammad Jamshidmofid, Ahmad Arabkoohsar
Healthcare sector buildings, particularly hospitals, significantly contribute to global energy consumption and greenhouse gas emissions. Hospitals require a substantial amount of steam, including the essential hygienic or " clean steam, " that is currently ...
Elsevier Sci Ltd2024Reactivation of variably sealed joints and permeability enhancement in geothermal reservoir rocks
Alexandra Roma Larisa Kushnir, Michael Heap
Hydraulic stimulation of enhanced deep geothermal reservoirs commonly targets pre-existing joint networks with the goal of increasing reservoir permeability. Here, we study the permeability and strength of joint-free and jointed Buntsandstein sandstones fr ...
2023A fully-coupled highly-parallelized geomechanical simulator for assessing induced seismicity
Jean-François Molinari, Brice Tanguy Alphonse Lecampion, Guillaume Anciaux, Nicolas Richart, Emil Gallyamov
Induced seismicity caused by anthropogenic modification of the subsurface effective stress state has been observed in a number of industrial applications -- from hydrocarbon extraction (e.g., Groningen [1]), drilling waste-water disposal (e.g., [2]) to the ...
2023Single-Well Pore Pressure Preconditioning for Enhanced Geothermal System Stimulation
Marie Estelle Solange Violay, Mathias Alexandre David Lebihain, Barnaby Padraig Fryer
The stress state is an important parameter in terms of both earthquake nucleation and rupture. Here, a new stimulation technique is proposed for Enhanced Geothermal Systems (EGSs), which have previously been burdened with a number of high-profile incidence ...
AMER GEOPHYSICAL UNION2023Fluid flow through microcracked and fractured granitic reservoirs
Marie Estelle Solange Violay, Lucille Jocelyne Nadine Carbillet, Michael Heap
The permeability of crustal rocks and rock-masses dictates the efficiency of hydrothermal circulation and therefore the productivity of geothermal resources. In this study, we find by monitoring P-wave velocity that thermal microcracking in Lanhélin granit ...
2023Permeability, alteration, and microstructure: A (hopefully) coupled rock physics and geochemical approach to how rock-fluid interactions change permeability
Permeability is a key physical property across all spatial scales in the Earth’s crust and exerts significant control on the behaviour of Earth systems, with implications for natural hazards (e.g., earthquakes, slope instabilities, volcanic eruptions) and ...
2023Three-dimensional fluid-driven frictional ruptures: theory and applications
Fluid-driven frictional ruptures are important in a broad range of subsurface engineering technologies and natural earthquake-related phenomena. Some examples of subsurface operations where borehole fluid injections can induce frictional slip are deep geot ...
EPFL2023Three-dimensional hydraulic fracture propagation in homogeneous and heterogeneous media
Hydraulic fractures are tensile fractures that occur in solid materials due to the natural intrusion or anthropogenic injection of a viscous fluid into a fracture channel. The deliberate creation of hydraulic fractures is part of an industrial technology h ...
EPFL2023Bounding the localized to ductile transition in porous rocks: implications for geo-reservoirs
Marie Estelle Solange Violay, Gabriel Gérard Dominique Meyer
Porous rocks have long been the focus of intense research driven by their importance in our society as host to our most essential resources (oil, gas, water, geothermal energy, etc), yet their rheology remains poorly understood. With increasing depth, poro ...
2023Geomechanics for Energy and the Environment: Current Developments
Geomechanics is advancing our understanding of the multi-physical processes encountered in engineering practices involving energy storage and production and environmental protection for which the characterization of the behavior of relevant materials is es ...
2022