Stratigraphic modeling

Stratigraphic modeling, which started recently to diffuse within companies, is a powerful tool to test stratigraphic interpretations, to better assess facies distribution at basin scale and to provide physically based carbonate reservoir models. It can bring some very valuable insights in many situations. Stratigraphic modeling can be used as a support for classical stratigraphic studies or can be part of broader studies aiming at assessing heterogeneities of rock properties. For instance, it can be part of a petroleum system study and provide a better definition of lateral and vertical facies variations while building a geological model for hydrocarbon migration studies. It can also be a key element in the analysis of carbonate reservoir formation and diagenesis, jointly with basin modeling and rock-fluid interaction simulation.

C6+ can perform specific studies to better depict petroleum systems and assess risks related to its elements:

  • Support models while correlating wells
  • Stratigraphic trap analysis
  • Reservoirs and seals distribution and quality
  • Source rock distribution

Results can also bring many information to complement seismic and geologic interpretation. It provides information depositional environments (bathymetry, oxygenation level, subaerial exposure, energy…) which can provide high-value information on possible alteration processes. Using statistics and machine learning methods in parallel to stratigraphic modeling, it is become possible to robustly assess probability of presence and effectivness of the elements of a petroleum system (source-rock, seal and reservoir).

Carbonate reservoirs

C6+ is also part of projects for the construction of geological models more representative of the heterogeneity which can be found in carbonate reservoirs. These are very complex geological structures which remain difficult to interpret and model. Deposition processes as well as diagenetic reactions have strong impacts on rock textures and properties. The petrophysical properties of these rocks are still difficult to characterize in-situ or from seismic making complicated the construction of geological models accounting for heterogeneities in porosity and permeability distribution at field scale.

An improved understanding of these complex systems can be reached by using new stratigraphic modeling tools, in combination with petrophysical and petrographic works, for prediction of the distribution of geological heterogeneities. Forward stratigraphic models can be used to capture the spatial distribution of depositional facies, based upon geological processes at regional scale such as sediment supply and carbonate construction, sedimentary transport and basin accommodation.

To go further and be more predictive in the distribution of petrophysical and petrological properties in carbonate reservoirs, new tools and methods are required to fully account for the biological, geochemical and mineralogical diversities of these systems. Therefore, C6+ is promoting new multi-disciplinary research projects aiming at better account for pre and post burial diagenesis in carbonate reservoirs.


With the new generation of stratigraphic modeling tools it becomes possible to better understand and predict the distribution and quality of source-rocks at basin scale. With their combined expertise in petroleum system modeling and forward stratigraphic modeling, C6+ consultants have developed methods and workflows for making the link between these two powerful solutions providing insight of distribution of source-rock kinetics at basin scale.