François Bonneau

François Bonneau
University of Lorraine | UdL · GéoRessources Géologie et Gestion des Ressources Minérales et Energétiques

PhD

About

24
Publications
3,207
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
162
Citations

Publications

Publications (24)
Article
Full-text available
Fractures result from complex mechanical processes producing irregular, hierarchical, and correlated networks. The statistical analysis of such networks is an important step toward characterizing and modeling fractures. However, established exploratory statistics for the investigation and quantification of fracture networks use only first‐order or...
Article
Full-text available
Mainland France is characterized by low-to-moderate seismic activity, yet it is known that major earthquakes could strike this territory (e.g., Liguria in 1887 or Basel in 1356). Assessing this French seismic hazard is thus necessary in order to support building codes and to lead prevention actions towards the population. The Probabilistic Seismic...
Article
Full-text available
Assessing seismic risk in low-to-moderate seismic activity areas like French mainland is a challenge. In these areas, the estimation of large earthquake hazard calls for models driven by sparse observation data and interpretative seismic knowledge. This leads models used in probabilistic seismic hazard assessment (PSHA) and declustering algorithms...
Article
Full-text available
The characterization of geological faults from geological and geophysical data is often subject to uncertainties, owing to data ambiguity and incomplete spatial coverage. We propose a stochastic sampling algorithm which generates fault network scenarios compatible with sparse fault evidence while honoring some geological concepts. This process is u...
Article
Fault damage zones can act as a preferential corridor for fluid flow in the subsurface, and for this reason the characterization of their structure, including the attributes of the associated fracture network, is fundamental. In this work, we characterize the damage zone of the Qala fault, a normal fault developed in platform carbonates of the Gozo...
Article
The discrete element method (DEM) is a powerful tool for simulating complex mechanical behaviors which discretizes the targeted medium with particles. The properties of particle assemblies used in DEM simulations directly impact the behavior of the simulated medium. It is thus of critical importance to generate particle assemblies so as to (1) avoi...
Article
Full-text available
This study investigates the thermo-hydraulic implications of three geologic scenarios for characterizing the geothermal hydrology of Basse-Terre Island, Guadeloupe. Despite newly acquired magnetotelluric, petrophysical, and geologic data, flow patterns and heat sources have remained elusive. Our simulations were performed in 2D, on a cross section...
Presentation
Seismic catalogues are composed of both independent events, i.e. main shocks, and spatio-temporal dependent events, i.e. fore- and aftershocks. Independent events present a time distribution that follows a Poisson law. Correlated events present a particular organization that can be described by scaling laws through time, space and magnitude. Seismi...
Poster
This web application aims at easing the analysis of seismic catalogs. Indeed, seismic catalogs present a combination of both independent (e.g. main shock, background seismicity) and correlated (e.g. fore shocks and after shock) seismic events, and segregating these populations is a key step to lead any statistical analysis of the seismic activity....
Presentation
Full-text available
Even if French mainland seismicity is known to be very low to medium, it’s still monitored in order to access to a high level fundamental understanding. This understanding is mainly used to anticipate earthquake related risk in probabilistic seismic risk assessment (PSHA) and has a direct impact on the French prevention based policy regarding this...
Article
Structural uncertainty exists when associating sparse fault interpretations made from two-dimensional seismic lines or limited outcrop observations. Here, a graph formalism is proposed that describes the problem of associating spatial fault evidence. A combinatorial analysis, relying on this formalism, shows that the number of association scenarios...
Conference Paper
Full-text available
As part of the GEOTREF research project, a cost-effective approach, relying on innovative software tools, is proposed to carry out prefeasibility studies prior drilling based on numerical conceptual models associated with phenomenological modelling and well layout optimization. The numerical conceptual models are intended to be 3D structural, geolo...
Conference Paper
One way to assess and anticipate seismicity is to define a model that simulate seismic activity through time, space and magnitude. The simulated seismicity needs to be i) representative of natural seismic activity over the calibration period and ii) predictive for non-yet occurred but plausible earthquakes especially regarding high magnitude events...
Article
RINGMesh is a C++ open-source programming library for manipulating discretized geological models. It is designed to ease the development of applications and workflows that use discretized 3D models. It is neither a geomodeler, nor a meshing software. RINGMesh implements functionalities to read discretized surface-based or volumetric structural mode...
Article
download : https://hal.univ-lorraine.fr/hal-01492512/document ----------------- Stochastic discrete fracture networks (DFNs) are classically simulated using stochastic point processes which neglect mechanical interactions between fractures and yield a low spatial correlation in a network. We propose a sequential parent-daughter Poisson point proce...
Conference Paper
This paper proposes to improve the natural fracture network characterisation by analysis microseismic data. We use a 3D Hough transform to build fracture orientation and density maps describing discontinuities that cannot be described by other measurements. The stochastic Discrete fracture simulator combines geostatistical and pseudo-genetic approa...
Thesis
Full-text available
Les méthodes stochastiques de modélisation discrète de réseaux de fractures reposent principalement sur la reproduction de la géométrie du réseau de fractures naturelles décrit par des lois de distributions statistiques. Classiquement, la géométrie de chaque objet est simulée en déterminant la position, l'orientation et la géométrie d'objets planai...
Conference Paper
Stochastic approaches are often used to simulate discrete fracture networks that are consistent with statistics obtained from field observations. However, classical stochastic methods do not account for fracture interactions to draw the geometry and the position of fractures. In this work, the tectonic history is considered. The fractures related t...
Article
Stochastic simulation of fracture systems is an interesting approach to build a set of dense and complex networks. However, discrete fracture models made of planar fractures generally fail to reproduce the complexity of natural networks, both in terms of geometry and connectivity. In this study a pseudo-genetic method is developed to generate stoch...
Chapter
After more than 20 years of progress, reservoir modeling still raises practical and theoretical challenges. Standard workflows are primarily built in a linear fashion (fault framework modeling, stratigraphic modeling, gridding, petrophysical modeling, upscaling, flow simulation and history matching). Modifying decisions taken at an early step of th...
Conference Paper
Full-text available
This paper reports on our investigations to integrate reservoir connectivity data in a genetic-like modeling of discrete fracture networks (DFN). DFNs are built using a three-step workflow to mimic fracture growth process: (1) initialization, (2) growth and (3) termination. Location and density of fractures are then iteratively updated using a fast...

Network

Cited By

Projects

Project (1)
Project
The aim of this PhD is to better estimate seismic hazard in France (mainland and Lesser Antilles) through the creation of a stochastic generator of earthquakes. From the data processing to the calculation of the hazard, the idea is to propose methods that differ from the classical ones. In fact, these last are mostly applied and efficiently proved in strong seismic activity regions which isn't the case for our study area.