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European Geosciences Union - General Assembly 2012

European Geosciences Union - General Assembly 2012. Geological characterization of Italian reservoirs and numerical 3D modelling of CO 2 storage scenarios into saline aquifers Silvia Beretta , Francesca Cappelletti, Roberto Guandalini, Fabio Moia RSE – Ricerca Sistema Energetico S.p.A.

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European Geosciences Union - General Assembly 2012

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  1. European Geosciences Union - General Assembly 2012 Geological characterization of Italian reservoirs and numerical 3D modelling of CO2 storage scenarios into saline aquifers Silvia Beretta, Francesca Cappelletti, Roberto Guandalini, Fabio Moia RSE – Ricerca Sistema Energetico S.p.A. Environment & Sustainable Development Department

  2. Agenda • Essentials on the RSE research activity • The numerical modelling of CO2 storage by SIAM (Integrated Analysis and numerical Modelling System) • Examples of application to on-shore and off-shore sites • Conclusions

  3. RSE Lab.– Milan (ITALY) RSE and the Electric System Research projects • RSE(317 employees)is a publicly-controlled company • it performs R&D in the energy and environment fields • involved in national and international research projects • main mission is to carry out researches of general interest for the national energy system • more efforts are devoted to the Electrical System Research projects (RdS) in order to: • innovate the Italian electric system • improve the plant safety • increase the environmental sustainability • reduce the costs with user advantage

  4. The numerical modelling of CO2 storage by SIAM • Main purposes: • identification of potential sites and of their storage capacity • evaluation of different injection scenarios in order to verify the suitability of the deep caprock-reservoir systems, mainly from the safety point of view • The tools: • a Web-GIS data base collecting geological and geophysical data • a modeller for the 3D model generation and result post processing • different 3D simulators aimed to model the geological system from the fluid dynamic, geochemical and geomechanic point of views • a GUI for the automatic management of all the phases of a site analysis

  5. 3D geological model Profiles 1:1000 wells data, seismiclines, geological and physical data etc. MethodRdS modeller Graphic 3D visualizer The functional scheme for the site analysis Tough2RdS Multiphase fluid dynamics (RSE from Tough2) ToughreactRdS Geochemicalanalyses (from LBNL) SHEMAT Reactivefluxes in aquifers (from RWTH Aachen-UNI) Web-GIS FEHM Local dynamic and geomechanics (from LANL) CANT-SD 3D geomechanics (RSE) Sem2DPack 4D seismicresponse (from Cal.Tech.Inst.)

  6. The SIAM GUI

  7. Struttura Cornelia ~ 200* Mton CO2 Struttura Pesaro Mare ~ 150* Mton CO2 *valori preliminari Evaluation of the storage capacity for the main potential Italian storage sites Malossa-Lombardia ~380 Mton CO2 Offshore Alto Adriatico ~800 Mton CO2 Offshore Adriatico marchigiano ~410 Mton CO2 ZONA B ~ 300 km Offshore Calabria Ionica ~100 Mton CO2 Area Sulcis-Sardegna SW

  8. Malossa oil and gas field Site 1: the on-shore Malossa site (Lombardia) Starting information • the Po Valley and the Lombardia region have been strongly explored for oil and gas field exploitation; • the Malossa reservoir has been identified in 70’s about 25 km from Milano • it is a gas reservoir, condensed in the Mesozoic sublayer • a number of gas storage authorizations are currently in force • data of 668 wells are currentlyavailable (110 of which from the ViDEPIproject(*)) • data of seismiclines (for manythousands km) are partiallyavailable (*)http://unmig.sviluppoeconomico.gov.it/videpi/progetto.htm

  9. Site 1: the on-shore Malossa site (Lombardia) Data extraction (from CO2-GIS) • analysis of 1:1000 profiles of 15 deep wells • analysis of maps from seismic information • Identification of the caprock-reservoir system so established: • “Argille del Santerno”: Pliocene clays (thickness from 62 to 543 m) • “Ghiaie di Sergnano”: Upper Messinian sandy gravel formation, salt water mineralized, with high porosity, already used for the storage of oil treatment residual waters by two existing wells (thickness from 2 to 211 m). The sands have a porosity of 20-30% and permeability in the range 3-1250 mD, while the conglomerates have porosity of 14-30%, and permeability of 0.2-959 mD. caprock/reservoir system Malossa oil and gas field Milano Reference stratigraphy

  10. Caprock surface shape from isopachs Completion of geological model from geological sections Reservoir surface shape from isopachs Base 2D Voronoi mesh for the calculation domain, including injection structures Final 3D model (mesh + materials) Site 1: the on-shore Malossa site (Lombardia) Creation of the 3D model

  11. Site 1: the on-shore Malossa site (Lombardia) • horizontal injection well, -2250 m depth • injection flow of 300.000 tonn/y, in agreement with the Techint capture project for its Dalmine steelworks plant • calculation domain of 60x35x2.78 km • injection period of 30 y, simulated period of 100 y • safety criteria based on a overpressure value everywhere less than 10% of the initial pressure • simulation has shown overpressure values in the reservoir after injection period < 3 bar (~2%) • max CO2 extension after 100 y: 2140 x 2090 x 157 meters Pmax at the base of the caprock

  12. NNW SSE wells Seismic sections Site 2: the off-shore Alto Adriatico site Data extraction (from CO2-GIS) Reference stratigraphy scheme caprock-reservoir system Linea B 440

  13. Site 2: the off-shore Alto Adriatico site CO2 injection simulation CO2 plume • horizontal injection well, -1350 m depth • injection flow of 1 Mtonn/y, in agreement with the ENEL project for its generation power plant • injection period of 30 y, simulated period of 100 y • safety criteria based on a overpressure value everywhere less than 10% of the initial pressure • simulation has shown overpressure values in the reservoir after injection period < 7.75 bar (~9%) Pmax at the base of the caprock

  14. Other significant sites: the fault modelling Calabria Ionica (Tyrrenian sea)

  15. Summary • The modelling procedure adopted is useful and effective • to individuate and evaluate potential storage sites and to estimate their storage capacity; • to generate the corresponding geological and fluid dynamic models; • to simulate different injection scenarios and analyze the behaviour of the CO2 plume in the short-, middle- and long- term. • The SIAM is useful to connect the different modelling tools and support the analysis of a potential storage site in the CCS field • The numerical tools included in the SIAM have been used also to perform the modelling of the exploitation of geothermal energy and of CAES technology

  16. How to contact us The company web site :www.rse-web.it The RdS projects web site:www.ricercadisistema.it E-mail contact :silvia.beretta@rse-web.it Thank you for your attention! This work has been financed by the Research Fund for the Italian Electrical System under the Contract Agreement between RSE and the Ministry of Economic Development - General Directorate for Energy and Mining Resources stipulated on July 29, 2009 in compliance with the Decree of March 19, 2009

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