european geosciences union, general assembly -austria center vienna - april 22-27, 2012 european...

European Geosciences Union , General Assembly -Austria Center Vienna - April 22-27, 2012

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


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


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 advantageRSE Lab.– Milan

(ITALY)


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 numerical modelling of CO2 storage by SIAM

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


3D geological model 3D geological model

Graphic 3D Graphic 3D visualizervisualizer

MethodRdS modellerMethodRdS modeller

Profiles Profiles 1:1000 1:1000 wells wells data, data,

seismic seismic lines, lines,

geological geological and and

physical physical datadata

etc.

ToughreactRdSToughreactRdSGeochemical Geochemical

analysesanalyses(from LBNL)(from LBNL)

SHEMATSHEMATReactive fluxes Reactive fluxes

in aquifers in aquifers (from RWTH Aachen-UNI)(from RWTH Aachen-UNI)

FEHMFEHMLocal dynamic and Local dynamic and

geomechanics geomechanics (from LANL)(from LANL)

CANT-SDCANT-SD3D geomechanics3D geomechanics

(RSE)(RSE)

Tough2RdSTough2RdSMultiphase fluid Multiphase fluid

dynamics dynamics (RSE from Tough2)(RSE from Tough2)

Sem2DPackSem2DPack4D seismic response 4D seismic response (from Cal.Tech.Inst.)(from Cal.Tech.Inst.)

Web-GISWeb-GIS

The functional scheme for the site analysis


The SIAM GUI


Malossa-Lombardia~380 Mton CO2

ZONA B~ 300 km

Offshore Alto Adriatico

~800 Mton CO2

Area Sulcis-Sardegna SW

Evaluation of the storage capacity for the main potential Italian storage sites

Offshore Adriaticomarchigiano

~410 Mton CO2

Offshore Calabria Ionica~100 Mton CO2

Struttura Cornelia~ 200* Mton CO2

Struttura Pesaro Mare~ 150* Mton CO2

*valori preliminari


Malossa oil and gas field

• 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 currently available (110 of which from the ViDEPI project(*))• data of seismic lines (for many thousands km) are partially available

(*)http://unmig.sviluppoeconomico.gov.it/videpi/progetto.htm

Site 1: the on-shore Malossa site (Lombardia)

Starting information


caprock/reservoir system

Malossa oil and gas field

Milano

• 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. Reference stratigraphy


Data extraction (from CO2-GIS)


Caprock surface shape from isopachs

Reservoir surface shape from isopachs


Completion of geological model from geological sections

Base 2D Voronoi mesh for the calculation domain, including injection structures

Final 3D model (mesh + materials)

Creation of the 3D model


Pmax at the base of the caprock


• 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


Reference stratigraphy scheme

wells

Seismic sections

NNW SSELinea B 440

caprock-reservoir system

Site 2: the off-shore Alto Adriatico site

Data extraction (from CO2-GIS)


• 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%)

CO2 plume

DeltaPmax cella AAAD14

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

0 10 20 30 40 50 60 70 80 90 100

time (years)

Del

taP

(b

ar)

DeltaPmax

Site 2: the off-shore Alto Adriatico site

Pmax at the base of the caprock

CO2 injection simulation


Other significant sites: the fault modelling

Calabria Ionica(Tyrrenian sea)


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

Summary


How to contact us

The company web site : www.rse-web.it

The RdS projects web site: www.ricercadisistema.it

E-mail contact : [email protected]

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

european geosciences union, general assembly -austria center vienna - april 22-27, 2012 european...

Documents

site analysis slide

geological system

researches of general

d modelling

information slide

malossa reservoir

wells data

d geological model graphic