Thomas Viard is working on uncertainties visualization. Indeed, taking care of subsurface uncertainties is a complex issue, the resolution of which is recurrent in many geological applications. A number of approaches have been proposed in the past. They aim at the creation of several geological models built from geostatistical simulations, which honor field data and respect geological realism. The quantification of geometrical uncertainties is essential when building a structural model, especially in an oil and gas reservoir. To do so, some methods generate an important number of equiprobable models from user-defined parameters. The quick and reliable analysis of these models is nowadays a major challenge in the field of geosciences. What they propose is to set up visualization tools to display the data together with their associated uncertainty. These tools benefit from the parallel computation power and the programmable flexibility of current graphic processing units (GPUs). They must be easy to understand and interpret to any user. Their validity will be studied on real case studies, taken from major oil companies, and confirmed with user studies.

Supervisors: Bruno Levy (LORIA) and Guillaume Caumon (CRPG-ENSG)