Physical properties of Cretaceous to Eocene platform-to-basin carbonates from Albania

Understanding acoustic velocities of sedimentary deposits is crucial for realistic subsurface imaging. The rely on mineralogy, density, as well pore volume (porosity) and structure. In carbonate rocks, both depositional diagenetic histories exert a significant control these characteristics. order to determine this control, petrographic analysis (thin sections) associated with the content, grain permeability, porosity, measurements were performed samples from Cretaceous Eocene platform-to-basin series Albania. Rock facies showed two associations four pore-type associations. Very low average permeability (<1 mD) variable porosity values (0–14%) characterize samples. Pore type alteration steered porosity-permeability distribution. Modelling velocity-porosity relationship, using differential effective medium theory (DEM), revealed that variations in velocity mainly driven by type, while mineralogy minor importance. Albanian dataset was compared petrophysical data retrieved time- deep-water equivalent Gargano Promontory Italy. comparison demonstrates variation limited within due pronounced infill primary secondary pores. Acoustic data, other hand, are more scattered essentially related higher preserved macro-intergranular micro-intercrystalline pores, and/or development mouldic This study contributes understanding heterogeneities spatial distribution types resulting different signatures platform carbonates. provide better insight into possible reservoir quality seismic signature carbonates reservoirs.