| Title | Data Revision and Upgrading of the Structural Model of the Travale Geothermal Field (Italy) |
|---|---|
| Authors | Giovanni Bertini, Michele Casini, Barbara Ciulli, Simona Ciuffi, Adolfo Fiordelisi |
| Year | 2005 |
| Conference | World Geothermal Congress |
| Keywords | Italy, Travale, structural model |
| Abstract | A big effort of geological data revision and geophysical data reprocessing has been performed for the Travale geothermal system in order to reconstruct an integrated and upgraded structural model of the field. Stratigraphical data of more than 90 wells have been reanalyzed in order to homogenize the geological features and particular attention has been devoted in the study of the fracture systems revealed by surface geology, core analysis and geophysical well logging. More than 170 km of 2D seismic reflection lines have been reprocessed and reinterpreted in order to obtain a better definition of geological structures and seismic anomalies to be associated to geothermal productive zones. The use of advanced software aimed to detailed 2-3D modeling has allowed an integrated interpretation of all the reviewed data and the reconstruction of a realistic geological - geothermal model of the Travale field. In particular the shape of granitic intrusion (3 My) has been drawn as well as the contact metamorphims aureole which seems to be the main deep productive horizon. This is often characterized as a continuous and strong seismic reflector, the so-called H horizon, which generally runs in the central sector of the Travale field, at depth of 2000-4000 m above the deepest and well known K horizon. Thanks to the seismic data reprocessing and interpretation, a new structure of the top of the K horizon has been redrawn. This upgraded conceptual model represents an efficient tool for the individuation of reliable geothermal targets prior to drilling. |