Organizing Heterogeneities in Turbidites: a Key Factor in Dynamic Modelling

In turbiditic environment, the spatial distribution of heterogeneities is driven by the internal architecture of channels complex, composed of multiple stacked elementary channels (e.g. Labourdette & Bez, 2010). Stochastic modelling provides scattered facies infilling and a poor rendering of the heterogeneity distribution in the reservoir. Consequently, dynamic sweep appears rather uniform/isotropic, and doesn’t reflect the real fluid pathway along geological bodies. The example showed in this paper is a Miocene reservoir from offshore Congo; the definition of field development is still ongoing. The methodology used allows the implementation of organized heterogeneities for dynamic simulation. The calibration was performed thanks to dynamic data, and impacts the simulated forecast, especially in terms of sand connectivity, sweep efficiency.