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AGU FALL MEETING 12-16 December 2016, San Francisco (CA)
The Sulcis Storage Project: status of the first Italian initiative for Pilot-scale geological sequestration of CO2Alberto Plaisant, Arianna Maiu, Venerio G. Anardu, Diana Multineddu, Enrico Maggio, Alberto Pettinau
Sotacarbo S.p.A., Grande Miniera di Serbariu, 09013 Carbonia, ITALY
SOTACARBO SpA, Grande Miniera di Serbariu, 09013 Carbonia, ITALY
The Sulcis coal basin (South-West Sardinia, Italy) is a very interesting site for a pilot-scale CO2 geological storage and to test new technologies for CO2 sequestration. As a matter of facts, a deep aquifer is confined in a carbonatic complex in a low seismicity zone and a thicksedimentary formation could provide a natural barrier to protect the basin from an eventual leakage of stored CO2. This justify the strong interest of Italian and Sardinian Governments to promote a very ambitious project for site characterization and for the development of aninternational research infrastructure on CO2 capture, utilization and storage. The project is funded by Italian Ministry of Economic Development and Sardinian Regional Government.
General overview
Underground
Laboratory
In an unused gallery of the coal mine
at about 400 m underground
Installation of permanent equipment for the development of advancedmeasurement and monitoring systems and for several experimental studieson:
• seal properties of coal layers and caprock;
• direct observation and analysis of the rocks;
• CO2 migration velocity in both coal and caprock;
• chemical reactions (water-rock-CO2) for the construction of specificgeochemical models.
Hydrogeologic
overviewof the coal basin
Geochemical
surveysthrough continuous
monitoring network
of stations
Structural geologyand fault analysis
Natural seismicity through a monitoring
network
Re-processingof the available seismic
profiles
Laboratory
characterization(physic and acoustic
properties) of rock samples
from both caprock and
Miliolitico formation
Soil samplingto investigate the site
baseline on soils
Site Characterization
Geomechanical
characterization of rock samples from both
Caprock and Miliolitico
formation and overburden
Site geology
Sulcis ProjectFault
Laboratory
for leakage simulation
(multiple injection tests along the fault)
Multiple Injection tests through fault (100 to 300 m deep) by means of aninclined borehole and a network of observation wells
• study of CO2 migration trough faults;
• testing of geochemical (low cost in house made CO2 sensors) andgeophysical monitoring tools;
• study of water-gas-rock interactions;
• study of rocks behaviour and micro seismic events by monitoringseismicity and technical rocks characteristics.
• Faults: typically sealed
• Laboratory analyses: low porosity of carbonatic formation
• Seismicity: low
• Stratigraphy: differences between the North and South areas of the coal basin
• Caprock and reservoir: high spatial heterogeneity in their petrophysical properties and then in their intrinsic characteristics
• Knowledge sharing and public awareness: promoted by a wide mining culture.
First outcomes
Acknowledgements
This work has been done within the “Centre of Excellence on Clean Energy” project (CUP: D82I13000250001), funded by the Regional Government of Sardinia, and the “Research
on Electric System” (CUP: I32F15000070001) funded by the Italian Ministry of Economic
Development.
www.sulcisccssummerschool.it
FREE registration (up to 40 students)
Frontal lessons on all the main CCUS topics
Technical workshops
Interactive programme for students
E-learning platform
Technical and touristic tours
Funded by
IN COOPERATION WITH
June 19-23, 2017
5th Annual InternationalSulcis CCS Summer SchoolSotacarbo Research Centre, Carbonia (Sardinia, Italy)
Sotacarbo facilities on CCUS
low natural seismicity
hydrogeological system
Sulcis site:
potential infrastructure capable for the development of:
• Low cost drilling
• Site monitoring technologies
• CO2 diffusion and leakage
site
characterization
fault
laboratory
underground
laboratory
test
site
Sulcis Project
Partnership:Università degli Studi di Cagliari
In cooperation with Carbosulcis S.p.A.