Geological Objects and Physical Parameter Fields in the Subsurface: A Review

This open-access paper reviews some practical and theoretical frameworks which exist to translate geological concepts into three-dimensional models. The bottomline is that geological parameterizations of subsurface objects offer new ways to quantify subsurface uncertainties and to reduce it. The links between model topology, geometry and properties are also discussed.

 

Graphical Abstract

 

Laurent 2016 epsl
We are please to announce our new publication in Earth and Planetary Science Letters.
Download the paper here (free access until the 21st of December)!

LinkedIn Rongier2017MarineP

In this new paper published in Marine and Petroleum Geology (i) we propose a geometrical and descriptive approach to stochastically control the channel stacking patterns; (ii) we demonstrate trhrough quantitative metrics that this method makes it possible to control the connectivity between the channels by adjusting the geometry of the migrating areas.

The complete paper can be found here for free download.

Rongier G., Collon P., Renard P. (2017). A geostatistical approach to the simulation of stacked channels. Marine and Petroleum Geology, 82, 318–335. DOI: 10.1016/j.marpetgeo.2017.01.027

On June 8th 2017, Benjamin P. Chauvin defended his Ph.D. entitled "Applicability of mechanics-based restoration: boundary conditions, fault network and comparison with a geometrical method".

Congratulations Dr. Chauvin!

 

annotated seq resto light

Uncertainty management in stratigraphic well correlation and stratigraphic architectures: A training-based method

EdwardsEtAl CAGEO2017

This paper, published in Computers & Geosciences, proposes a new way to sample stratigraphic layering uncertainty by generating possible correlation lines between boreholes.

ImageWeb ParquerPaper

In this paper published in Mathematical Geosciences, we propose to reconstruct channelized systems with a stochastic inverse simulation that reproduces the reverse migration of the system. Starting from the last channel path, which is often the one that is brought out on seismic data, the method builds step by step possible past trajectories. As abandoned meanders provide clues about the paleo-locations of the river, they are also integrated time step by time step during the reverse simulation process. An application is provided on a satellite image of a fluvial system.

The complete paper can be found here for free download.

Parquer M.N., Collon P., Caumon G. (2017). Reconstruction of Channelized Systems Through a Conditioned Reverse Migration Method. Mathematical Geosciences, 49(8), 965–994. DOI: 10.1007/s11004-017-9700-3

Validating novel boundary conditions for 3D mechanics-based restoration: an extensional sandbox model example

This paper discusses boundary conditions to be applied for appropriate geomechanical restoration. We use an analog lab model for confronting numerical restoration results and the "ground truth".
This work was performed during the PhD research of Benjamin P. Chauvin in collaboration with Harvard and Chevron.

The complete paper can be found here for free download.

annotated seq resto light

 

We are pleased to announce a mini-workshop on geology and meshing, April 1st, 2016.Slice in a 3D mesh of the Corbieres model

New numerical schemes to simulate hydrodynamic, geomechanical and seismological processes have a great potential to handle geometrically complex geological features. Unlocking this potential calls for appropriate meshing algorithms which can adapt to geological heterogeneities while meeting numerical requirements. On the occasion of the PhD defense of Arnaud Botella, this workshop will provide opportunities to discuss about recent advances, trends and challenges in this field. 

You can now watch the PhD defense and the Q&A (in French) of Arnaud Botella