SalterRING is a python module developed within the RING team. The aim of this module is to provide tools to jointly model hydrothermal alteration facies and the geological structures that govern fluid flow and hence the geometry of alteration facies.

Alteration facies modeling in SalterRING is based on an implicit, stochastic modeling approach. A pseudo scalar distance field P(d) is used to model alteration front boundaries. This distance field is generated using front propagation methods and a velocity field, considered as proxi of hydraulic conductivity. The velocity field is parameterized by generating geological objects using Boolean processes. Objects that can control the geometry of hydrothermal alteration (regional faults, unconformities, fractures, sedimentary geometries and petrophysical heterogeneities) are generated and tested via a Metropolis Hastings algorithm. Model quality is monitored via a misfit term to the input data. In this first version, calibration is mainly based on point data from boreholes, in particular alteration front limits.

This first version of SalterRing is being developed as part of Paul Marchal's thesis, supervised by Guillaume Caumon and Pauline Collon, and funded by Orano.

Training link available soon.

Webinar Link April 2024

See Ring Meeting Paper 2023 for more informations.


KarstNSim is a Skua-GocadV19 plugin (on windows : VS2017 is required). The purpose of this plugin is to simulate cave networks in 3D and in a stochastic workflow, taking into account various input parameters with uncertainties. A particular focus is given on the ability for the user to easily control the morphometry of the networks. KarstNSim is primarily being developed by Augustin Gouy in the frame of his PhD thesis.

KarstNSim has been the subject of a "proof of concept" publication by Gouy A., Collon P., Bailly-Comte V., Galin E., Antoine C., Thebault B., and Landrein P., 2024. KarstNSim: A graph-based method for 3D geologically-driven simulation of karst networks. Journal of Hydrology 632. Concurrently with the publication, a standalone (independent of Skua-Gocad) and public version of the code has been created and is accessible on GitHub:

Image ChenauxEmpilesGoNURBS is a plugin developped for sedimentary objects modelling

KarstMod is a plugin developped for 3D karstic network simulations (2008-2012). It is available on the Gocad 2009.4 platform.

Image ConnectOConnectO is a plug-in for the SKUA-GOCAD software to simulate channelized systems and analyze categorical realization quality.

OM-MADE is an open-source progam written in Python v3. It is designed to simulate one-dimensional solute transport in multiple exchanging conduits and storage zones.

Karstnet is an open-source python3 project providing tools for the statistical analysis of karstic networks.