Magnenet, Vincent and Fond, Christophe and Genter, Albert and Schmittbuhl, Jean (2014) Two-dimensional THM modelling of the large scale natural hydrothermal circulation at Soultz-sous-Forêts. Geothermal Energy, 2 (1). DOI: https://doi.org/10.1186/s40517-014-0017-x
Full text not available from this repository.Abstract
Background A two-dimensional numerical model is developed for the Soultz-sous-Forêts reservoir from an idealized cross-section containing six homogeneous horizontal layers. The considered constitutive equations are those of homogenized saturated porous media involving Thermo-Hydro-Mechanical (THM) couplings, and most of materials properties (for brine and rocks) are taken dependent on temperature and pressure. Methods The constitutive equations are solved in transient regime with the finite element software Code_Aster to reach a stationary state of the reservoir. Results We show that a large scale natural convection is compatible with present boundary conditions if the permeability of the reservoir is of the order of 1.0×10−14m2. Convection cells are of the order of 1.3 km in width and we analyze several vertical profiles and maps of physical properties. Conclusions A stationary convective solution at large scale is highlighted.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Geothermal reservoir, Finite element method, Thermo-hydro-mechanical model, Natural convection |
| Application references: | Stress and strain changes induced by fluid injection and temperature change driven by geothermal injection |
| Subjects: | Methodology > Method and procesing > Technology-seismicity interaction Region > France > Soultz-sous-Forets Inducing technology > Geothermal energy production |
| Project: | EPOS-IP |