--> Abstract: Integration of Outcrop and Subsurface Data Through Forward Stratigraphic Modelling: Application to Middle East Cenomanian-Turonian Carbonate Platforms, by Jean-Christophe Embry, David Hunt, Ian Robert Sharp, Stian Soltvedt, and Ali Jahanpanah; #90078 (2008)

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Integration of Outcrop and Subsurface Data Through Forward Stratigraphic Modelling: Application to Middle East Cenomanian-Turonian Carbonate Platforms

Jean-Christophe Embry, David Hunt, Ian Robert Sharp, Stian Soltvedt, and Ali Jahanpanah
Research Centre, Norsk Hydro, Sandsli, Norway

The use of stratigraphic forward modelling provides insights into the distribution and the geometry of Cenomanian-Turonian carbonate platform deposits, and sedimentological processes that control reservoir intervals.

This work applies DIONISOS to a hydrocarbon and outcropping carbonate platform at exploration scale and shows the interest of FSM technique through predicting stratigraphic geometries and facies distribution between outcrops and wells. This model simulates the filling of a sedimentary basin in an area of 100 km by 150 km based on 3 main parameters: accommodation (subsidence and eustatism), sediment supply (in situ production for carbonates) and transport (mainly gravity driven diffusion).

So far, the FSM technique allowed to visualise a large complicated dataset in three dimensional views along chosen cross-sections at any defined stratigraphic surface, to test the coherency of the database and of the interpretations, to display in 3D the reservoir facies distribution and to asses their volumes and connectivity and to get a better understanding of the allocyclic and autoyclic parameters controlling the stratigraphic architecture such as the sediment-transport efficiency or the syn-sedimentary tectonic activity. For example the last sequence of the Cenomanian platform system is capped by a major incision and karstic surface representing a minimum time gap of 1,5 million years corresponding to the missing lower Turonian. This major exposure event recorded in the platform settings is associated with a major tilting of the platform systems corresponding to a regionally recorded tectonic event. More than providing definitive conclusions, the 3D forward stratigraphic approach is used to consider various scenarios to find out the impact of different controls on stratigraphic architecture and then to asses the level of reservoir heterogeneity uncertainties.

 

AAPG Search and Discover Article #90078©2008 AAPG Annual Convention, San Antonio, Texas