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Mediato, J. F., J. García-Crespo, E. Izquierdo, J. L. García-Lobón, C. Ayala, E. L. Pueyo, and R. Molinero (2017), Three-dimensional Reconstruction of the Caspe Geological Structure (Spain) for Evaluation as a Potential CO2 Storage Site, Energy Procedia, 114(Supplement C), 4486-4493, doi: https://doi.org/10.1016/j.egypro.2017.03.1608.


The Caspe geological structure was formed by the convergence of the Iberian Range and the Catalonian Coastal Range, during the Tertiary compression. Traditionally, the Caspe structure has been interpreted from seismic profiles without considering surface structural data. The aim of this study is to build a 3D geological model taking into account the structural data from the geological map, stress fields and lineaments, and evaluate its possibility as potential CO2 storage site. Four surfaces have been modelled: Buntsandstein Top, Muschelkalk-I Top, Muschelkalk-II Top and Cenozoic Bottom. Considering the geometry and depth for storage the target reservoir was considered to be the Buntsandstein facies. The available seismic data indicate that the Buntsandstein facies top is at approximately 500 m depth and hosts a deep saline aquifer. The target reservoir series include the conglomerate and sandstone of the Hoz del Gallo and Cañizar Fms (Buntsandstein Facies) with an average thickness of 500 m and 21% porosity. The seal comprises the shales and silts of the Röt Fm with an average thickness of 100-150 m. The structure volume was calculated based on the -500 mbsl for the Buntsandstein top deepest closed contour lines. The estimated volume is 5,800 Mm3 with most of CO2 in gaseous state.

Reference article

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