Abstract
The Late Eocene Sobrarbe Delta System developed at the southern margin of the Ainsa basin as part of the Pyrenees foreland basin, northeastern Spain. It shows exceptional lateral and vertical exposure at seismic scale. Continuous outcrops between alluvial plain an basin margin in both time and space allow for high-resolution measuring/sampling of vertical sections and physical/optical tracing of sediment surfaces. This study includes preliminary data from three outcrop transects of 12-25 km each in the direction of long-term progradation and parallel to paleo-coastlines. The ongoing project will further develop and analyze a high-resolution 3D data set of reservoir architecture in the Sobrarbe Delta System with special focus on lateral continuity and vertical connectivity of reservoirs. Improved reservoir models are essential for forward numerical models of sedimentary systems and fluid-flow during subsequent burial. Key objective is the improved understanding of heterogeneities in reservoir facies and petrophysical parameters in foreland basin delta systems by high-resolution outcrop analysis. Outcrop-based data sets are processed with GIS (ArcGIS ®, ESRI 2009). 3D models will be performed and analyzed with Petrel ® (Schlumberger) and compared to producing subsurface delta systems in foreland basins.
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