Nicolas Cherpeau


Subsurface modeling is a key tool to describe, understand and quantify geological processes. As the subsurface is inaccessible and its observation is limited by acquisition methods, 3D models of the subsurface are usually built from the interpretation of sparse data with limited resolution. Therefore, uncertainties occur during the model building process, due to possible cognitive human biais, natural variability of geological objects and intrinsic uncertainties of data. In such context, the predictibility of models is limited by uncertainties, which must be assessed in order to reduce economical and human risks linked to the use of models.
My work focuses more specifically on uncertainties about geological structures. In this context, I develop a stochastic method for generating structural models with various fault and horizon geometries as well as fault connections. Realistic geological objects are obtained using implicit modeling that represents a surface by an equipotential of a volumetric scalar field. Faults have also been described by a reduced set of uncertain parameters, which opens the way to the inversion of structural objects using geophysical or fluid flow data by baysian methods.

Contact Information

Phone number:(+33) 3 83 59 64 84
ENSG office number:G208

Phd Thesis

Incertitudes structurales en géomodélisation : échantillonnage et approche inverse




in: Closing the Gap: Advances in Applied Geomodeling for Hydrocarbon Reservoirs, pages 43-52, Canadian Society of Petroleum Geologists



in: SPE Reservoir Characterization and Simulation Conference and Exhibition (RCSC)


in: SEG Technical Program Expanded Abstracts, pages 2366-2370, SEG



Guillaume Caumon and Christophe Antoine and Christian Le Carlier de Veslud and Marc-Olivier Titeux and Gary G. Gray and Jeanne Pellerin and Claire Castagnac and Nicolas Cherpeau and Claude Cavelius and Florent Lallier and Laurent Wagner.
in: Proc. 28th Gocad Meeting, Nancy