Our team

Philippe Pluyaud

Chief Executive Officer (CEO)

Philippe holds Engineering degree from the Ecole Nationale Supérieure de Géologie, Nancy (France) and a MSc in Geosciences from Nancy University (France). He then spent eight years at Earth Decision (now Paradigm) working on Gocad® projects, in particular on the JACTA™ project, first as senior software developer and then as a project manager. Philippe joined Ephesia Consult in 2005 and is responsible of software development supervision. He coordinates the development of major reservoir characterisation and volumetric uncertainty assessment projects.

Dimitri D'Or

Chief Science Officer (CSO)

Dimitri holds a PhD in Agronomical Sciences, from the Université catholique de Louvain, Louvain-la-Neuve, Belgium. He is specialized in geostatistics, statistics and soil science. He joined Ephesia Consult in 2003 where he manages the environmental projects (soil remediation geostatistical studies, greenhouse gas emission assessment on landfills, etc.). He is also in charge of the R&D where he works on projects related to, e.g., simulations of categorical variables, uncertainty assessment and pseudo-genetic simulations of deltaic lobes and turbiditic channels.

Roland Froidevaux

Chairman of the Board

Roland has more than 35 years of experience in the field of petroleum, mining and environmental geostatistics. After obtaining a Ph.D. in Geology from the University of Geneva (Switzerland) he spent 10 years in North America, working as a consultant in mining geostatistics. He came back in 1987 and founded Ephesia Consult which was then called FSS Consultants. His activities include supervising geostatistical and geomodeling software development, advising companies and providing in-house training in geostatistics for major oil companies. Roland is also one of the founding members of the geoENVia association which is at the origin of the biannual geoENV conferences.

Alexandre Walgenwitz

Project Manager

Alexandre holds a MSc in Applied Mathematics and MSc in Mathematical Engineering from the University of Franche-Comté (France). He joined Ephesia Consult in 2003 where he is in charge of the Impala Project and responsible for all parallel programming and graphic card programming projects. He is also a specialist in object and multiple point simulation methods.

Sylvain Gaultier

Project Manager

Sylvain holds a MSc in Applied Mathematics and Software Engineering from the University of Orléans (France). He then worked for seven years as a software developer for various software editors and software services companies. Sylvain joined Ephesia Consult in 2008 and his responsibilities include Java software development.

Philippe Lamy

Software Engineer

Philippe holds MSc degree in Applied Mathematics and Computing Science from Jean Monnet University, Saint-Etienne (France). He then worked for 4 years as a research engineer at Elf Geoscience Research Centre, London and 6 more years as project manager and developer for Earth Decision (now Paradigm) in Paris. Philippe joined Ephesia Consult in 2005. He is more particularly involved in Basin modeling and hydrocarbon volumes assessment algorithm development.

Stéphanie Berthelin

Software Engineer

Stéphanie holds a Master of Science in Applied Mathematics from the National Institute of Applied Sciences (Rouen, France). She worked for four years as a research engineer at the Laboratoire de Physique et de Chimie de l'Environnement et de l'Espace (CNRS, Orléans, France) before joining Ephesia Consult in 2010 as a software developer.

Denis Allard

External Scientific Adviser

Denis is Senior Researcher in spatial statistics at INRA, Avignon (France) where he was head of the unit "Biostatistics and Spatial Processes". He holds a MSc and a PhD in Geostatistics from the Ecole des Mines de Paris (France) and has a broad experience as teacher (Former Assistant Professor of Probability and Statistics at the Statistics Department, University of Washington, Seattle (U.S.A.)) and consultant (Former Senior Geostatistician with BP Exploration Production, Subsurface technology (UK)). He works for Ephesia Consult since 2001 as scientific adviser where he is involved in R&D projects related to spatial statistics, Bayesian statistics, object simulation and uncertainty assessment.