Prediction of Multi-Scale Fluvio-Deltaic Stratigraphy by Forward and Inverse Modeling of Integrated Source-to-Sink Sediment Flux
Joep Storms¹, Dirk-Jan Walstra¹,², Nathanaël Geleynse¹, Gerben de Jager¹, Andrea Forzoni¹, Karl Charvin³, Kerry Gallagher4, Liang Li¹, Gary Hampson³, and Bert Jagers²
¹Delft University of Technology, Delft, The Netherlands
²Deltares, Delft, The Netherlands
³Imperial College London, UK
4Université de Rennes, France
Numerical models are useful tools to simulate fluvio-deltaic sedimentary processes and can therefore be used to untangle the sea level and sediment supply histories from the sedimentary record by combining field data with new forward and inverse numerical modeling techniques. Applying models at various temporal and spatial scales provides the potential to predict reservoir properties, as well as quantifying their uncertainty.
We developed a new catchment model to predicting the sediment flux from the hinterland, and a coupled floodplain-delta-shoreface forward stratigraphic model to quantify volumetric changes in sediment distribution in response to external or allogenic forcing. Combining the catchment and the computationally efficient stratigraphic model allows for quantification of the complex interactions between the sediment yield in the source and the stratigraphic response in the sink (shallow marine domain) in relation to climate change and tectonics, sediment transfer rates and delays. At the same time, the low computational time of the forward stratigraphic model provides the opportunity to use inverse modeling to reconstruct sediment supply from stratigraphic data. At a more detailed temporal and spatial scale a physics-based model (Delft3D) can be used to explore detailed aspects of stratigraphic heterogeneity.
AAPG Search and Discovery Article #120098©2013 AAPG Hedberg Conference Petroleum Systems: Modeling the Past, Planning the Future, Nice, France, October 1-5, 2012