The Geothermal Euganean Field, A Subsidence Modelling Approach

Abstract

Multidisciplinary havc carricd out from many years in the Euganean hydrothermal fields (Veneto, North Eastern Italy). Subsidence modelling of the Abano field is a new research program for the same area. The geological studies perfonned by means of new wells, produced new knowledge about the hydrothermal structure. was possible to draw a better definition of the geometries of the productive basin obtaining more data about the hydrodynamic structure and the thermal situation of the reservoir. The geophysical researches examined micro variations of the gravity versus the time in comparison with the high precision levelling-net. A borehole with a depth beyond 400 m, allowed to core samples of the sands, silts and clays of the alluvial quaternary sequence. They were submitted to laboratory tests to find the main geotechnical parameters. Finally a finite element modelling technique was used to perform the subsidence simulation. model adequately calibrated can be used for a more correct management and exploitation of the hydrothermal resource.