3D organic matter modeling: a novel tool in forward stratigraphic modeling

The source rock characteristics (thickness, quantity and quality) can be varied both in the deposition of time and space. Currently, the distribution map of organic matter is estimated by simplified extrapolate methods using observed data on well location. There is a high degree of uncertainty as a result of using this method especially in the area with a lack of well data.  The aim of this study is to intreduce a novel tool in DionisosFlow software for three-dimensional (3D) simulation of the distribution of total organic carbon in a source rock. In this method, a stratigraphic modeling approach is used to mimic the production and preservation process of the organic-rich interval. The main parameters in this module will be bathymetry, sedimentation rate, primary production, carbon flux and oxygen condition of the sedimentary environment. In this study, we constructed an artificial model to investigate the efficiency of this process-based algorithm. Furthermore, the 3D simulation result of a real model is illustrated. This study indicates a close relationship between depositional conditions on the one hand and the production and preservation of organic matter on the other hand. Also, simulation results pinpoint which anoxic condition could be one of the main parameters in maintaining and distribution of organic matter.