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Authors: Buttinelli, M.* 
Procesi, M.* 
Cantucci, B.* 
Quattrocchi, F.* 
Boschi, E.* 
Title: The geo-database of caprock quality and deep saline aquifers distribution for geological storage of CO2 in Italy
Issue Date: 24-Mar-2011
Series/Report no.: /36 (2011)
DOI: 10.1016/
Keywords: CO2 storage
Caprock quality
Geological risk factors
Subject Classification05. General::05.08. Risk::05.08.01. Environmental risk 
Abstract: One of the most promising options to stabilize and reduce the atmospheric concentration of greenhouse gases is Carbon Capture and Storage (CCS). This technique consists of separating CO2 from other industrial flue gases and storing it in geological reservoirs, such as deep saline aquifers, depleted oil and/or gas fields, and unminable coal beds. A detailed reworking of all available Italian deep-drilling data was performed to identify potential storage reservoirs in deep saline aquifers. Data were organized into a GIS geo-database containing stratigraphic and fluid chemistry information as well as physiochemical characteristics of the geological formations. Caprock efficiency was evaluated via numerical parameterization of rock permeabilities, defining the “Caprock Quality Factor” (Fbp) for each well. The geo-database also includes strategic information such as the distribution of deep aquifers, seismogenic sources and areas, seismic events, Diffuse Degassing Structures, heat flow, thermal anomalies, and anthropogenic CO2 sources. Results allow the definition of potentially suitable areas for future studies on CO2 geological storage located in the fore-deep domains of the Alps and Apennines chains, where efficient marly-to-clayish caprocks lie above deep aquifers hosted in sands or limestones. Most of them are far form seismogenic sources and Diffuse Degassing Structures.
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