Description du projet
Des modèles mathématiques pour les systèmes géothermiques à haute température
Les dynamiques complexes telles que l’ébullition des fluides géothermiques et la déformation des roches fracturées, résultant du développement et de la production de ressources géothermiques à haute température, restent mal comprises. Le projet MaPSI, financé par l’UE, fournira les modèles mathématiques et la technologie de simulation nécessaires pour évaluer l’interaction entre le processus et la structure de la subsurface dans le contexte d’une stimulation hydraulique et thermique pendant le développement et la production de ressources géothermiques à haute température. Le projet développera des modèles mathématiques et numériques novateurs destinés à simuler l’écoulement multiphase et les milieux thermo-poroélastiques à changement de phase avec des fractures se déformant et se propageant. MaPSI fera progresser les compétences et améliorera la compréhension des processus couplés dans le développement et la production de systèmes géothermiques à haute température en vue d’une exploitation durable des ressources.
Objectif
In the development and production of high-temperature geothermal resources, large induced gradients in pressure and temperature during injection operations results in complex dynamics. This includes boiling of geothermal fluids and deformation of the fractured rock, dynamics that are currently not well understood. This provides a core motivation as well as challenging test cases for the mathematical and numerical developments in the MaPSI project. MaPSI has as its main objective to provide mathematical models and simulation technology required to assess subsurface process-structure interaction in the context of hydraulic and thermal stimulation in development and production of high-temperature geothermal resources.
This will be achieved by a highly novel and timely research programme which will:
- Combine new techniques with recently developed methodology by my own research group to develop unprecedented mathematical and numerical approaches to enable modelling of multiphase flow and phase-change in thermo-poroelastic media with fractures that may slip, deform and propagate;
- Advance competences in the main scientific fields involved; and
- Improve understanding of coupled processes in development and production of high-temperature geothermal systems towards sustainable exploitation of the resource.
The project will provide new mathematical and numerical models along with open-source software that have capabilities in modelling of coupled process-structure interaction in fractured porous media that greatly exceed those of existing platforms. Specific case-studies will assess process-structure interactions for development and production operations in high-temperature geothermal systems, including superheated and supercritical regimes, providing timely contributions to further developments of these resources.
Champ scientifique
Programme(s)
Régime de financement
ERC-COG - Consolidator GrantInstitution d’accueil
5020 Bergen
Norvège