Subject 4 – Thesis & Post-Doctorate: Energy transfer modeling in dual-porosity Reservoir

Supervisor: P. Ackerer  (LHyGeS)
Research unit: CNRS – Laboratoire d’Hydrologie et Géochimie de Strasbourg (LHyGeS)
Starting date: Post-Doctorate – 2016, february the first
Candidate name: I. Toloni


The objective is twofold:

  • Updating a pre-existing software tool, dedicated to mass transport simulation, within the context of the geothermal energy sector. The actual code is based on recent numerical methods (mixed and discontinuous finite elements) well suited to the modeling of highly heterogeneous matrices and complex geometry, as well as front propagation simulation.
  •  The development of an inverse method for the double-media model to facilitate well test interpretation. The multi-scale description of the parameter space differentiates this model from the existing models. This approach consists of initiating the inversion process with a homogeneous medium and gradually increasing the heterogeneity. Refinement indicators of the parameter space permit to automatically manage the increase in heterogeneity.

Subject 9 – Thesis: Modeling of water flow and heat transport in porous and fractured geologic media (application to deep geothermal reservoirs)

Supervisor: R. Ababou, M. Marcoux (IMFT)
Research unit: IMFT
Starting date: 2015, october the first
Candidate name: T. Rajeh

Summary of PhD thesis topic

Research on effective properties of a fractured porous reservoir in the context of deep, high temperature geothermal exploitation:

  • Analyzis and generation of 3D fractured media (statistical systems of planar fractures).
  • Calculation of equivalent coefficients of permeability, thermal conductivity, and matrix/fracture exchange (upscaling theories, numerical implementation and validation).
  • Modeling: 3D numerical simulation (finite volumes) of coupled hydro-thermal flow for an equivalent dual continuum geothermal reservoir, possibly including an interface for well/reservoir coupling during exploitation (thermo-hydraulics processes in the well are not studied in this thesis, but are the object of another task within the same project).