Ghislain Trullenque defended his habilitation to direct research entitled "Deformation mechanisms, fluid circulation and fluid rock interaction processes within geological domains affected by deformation gradients. Insights on reservoir analogues understanding by means of a multidisciplinary approach" on June 9 at UniLaSalle Beauvais.

Jury members

Mr. Sass Ingo (Professor, GFZ Potsdam, Germany) – Reviewer
Mr. Bruhn David (Professor, TU Delft, The Netherlands) – Reviewer
Mr. Moscariello Andrea (Professor, Geneva University, Switzerland) – Reviewer
Mrs. Schill Eva (Professor, TU Darmstadt, Germany) – Examiner
Mrs. Falcone Gioia (Professor, Glasgow University, United Kingdom) – Examiner
Mr. Liotta Domenico (Doctor HDR, Bari University, Italy) – Examiner
Mr. Potel Sébastien (Doctor HDR, UniLaSalle, France) - Mentor

Abstract

This thesis brings together all my research activities and perspectives in the fields of large-scale geodynamics, tectonic and microfabric analysis, experimental deformation, scanning electron microscopy analysis and modeling. I believe that a multidisciplinary approach is needed to understand the complexity of a given geological system in terms of structural evolution, fluid circulation and fluid/rock interaction processes. My line of research is shared within an international community of researchers and industrialists, and I attach great importance to publishing my work in scientific journals, communicating with the public, teaching students, supervising PhD theses and mentoring young researchers.

I wish to devote my future research to understanding 1) the combined role of deformation and fluid/rock interaction processes on the reaction kinetics leading to the development of alteration minerals and 2) the influence of these alteration products and the development of anisotropy on the mechanical and petrophysical properties of fault zones, all under a wide range of temperature and pressure conditions. These two fields are intimately correlated, and their study provides a better understanding of the key chemical and physical parameters controlling fluid transport properties within fractured systems.

My activities have direct applications in terms of the safe and sustainable use of geological reservoirs, both for geothermal exploitation and for carbon capture and storage in various geological contexts. My work contributes to societal challenges in terms of environmental preservation and the economic competitiveness of renewable energies.