Evaluation of geophysical and mechanical rock properties through analysis of public well logs in Central-Eastern Italy and the Adriatic Offshore and case study of CO2 storage potential

The interpretation of geophysical and mechanical rock properties is essential for subsurface characterization, reservoir modeling and future development. This work focuses on the Central-Eastern Italy and Adriatic offshore areas, exploiting a publicly available well log database. Sonic logs (DT logs) were digitized and processed using Schlumberger Petrel software (v2013) to derive compressional-wave velocity (Vp) and shear-wave velocity (Vs) through empirical equations. The geophysical properties together with a derived density log were used for Dynamic Elastic Moduli (Young’s Modulus) calculation for the above region. Correlation between wells was performed to investigate relations between lithology and geophysical and mechanical parameters. During the log analysis it was selected a potential interval suitable for CO2 storage for which was performed a preliminary storage capacity calculation. The results show consistent correlations between seismic velocities and mechanical parameters. These finding can be used for the prediction of mechanical properties in wells with missing data and used during the construction and population of geomechanical models, providing the basis for future subsurface evaluations in the area.