GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 3.1 - POSTER GNGTS 2023 3D Thermal and Structural Reconstruction of Geothermal Reservoirs For Potential Projects in Central Perityrrhenian Italy – Southern Latium Case Study G. Vico 1 , A. Pascazio 1 , A. Bonamico 2 , S. Corrado 2 , G. Giordano 2 , R. Maffucci 3 , S. Bigi 1 1 Dipartimento di Scienze della Terra, Università di Roma La Sapienza, Roma 2 Dipartimento di Scienze, Università degli Studi Roma Tre, Roma 3 Istituto Nazionale di Geofisica e Vulcanologia, Roma Introduction. During the last years, a general interest in geothermal energy has increased mainly because, compared to other renewable energy sources, it represents a clean and inexhaustible source. In 2016, this focal point was highlighted by the Commission for Sustainable Energy of the U.N.E.C.E. (United Nations Economic Commission for Europe) through the publication of the specifications of a unified standard for the presentation of projects relating to geothermal exploitation. In Italy, a renewed interest in geothermal energy was found in the acts of the Commissioni Riunite VIII (Ambiente, Territorio e Lavori pubblici) and X (Attività produttive, Commercio e Turismo), which publish the zoning procedures of the Italian territory "Guidelines for the use of medium and high enthalpy geothermal resources", aimed at identifying the general evaluation criteria for the safe exploitation of the resource (Mise, 2016). At national level, several studies have been carried out, and efforts have been made to investigate the medium and high enthalpy geothermal potential, mainly in areas characterized by high temperatures and with high heat flux (Procesi et al., 2013; Petracchini et al., 2015; Cinti et al., 2018). In particular, in the Latium region, the main interesting geothermal areas, characterized by high heat flux and high temperatures at shallow depths, are located in the northern part. (Barberi et 1984; Buonasorte et al., 1995; Cataldi et al., 1995). On the contrary, the southern part of the region is still less explored. Procesi et al. (2013) found that temperatures between 70 and 100 °C should occur at the top of carbonates units at depths of 2000 m and 3000 m. In this framework, Quaternary magmatism can be identified as the source of a potential geothermal system whose reservoir is represented by the Apennine carbonates of the Mesozoic Tethys platforms (Minissale et al., 2016). The general objective of this integrated project consists of an accurate characterization of selected geothermal systems in central Italy, defining their potential in terms of geothermal energy planning and elaborating a regional circulation model. The target is the development of a unifying and reliable Map of the Geothermal Potential of the central perityrrhenian Italy and the