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Modeling land subsidence and uplift due to fluid withdrawal/injection from/into
subsurface reservoirs
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Achievements:
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Two- and three-dimensional nonlinear elasto-plastic
finite element models have been developed to efficiently simulate land displacements
induced by hydrocarbon extraction/storage from/into deep reservoirs along with
fresh-water withdrawal from multiaquifer systems and water pumping into deep saline
aquifers to mitigate relative sea level rise in coastal areas.
The models account for: rock nonlinear mechanical behavior, both
elastic and plastic, influence of the waterdrive surrounding the hydrocarbon
fields, fault mechanics. Application to a number of real field cases
characterized by very complex geometric features.
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Results published and submitted to:
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- Water Resources Research
- Engineering Geology
- International Journal of Geomechanics
- Journal of Geopghysical Research - Earth Surface
- EOS Transactions AGU
- Hydrogeology Journal
- Environmental and Engineering Geoscience
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Results presented in:
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- 2009 National Groundwater Association Summit, Tuson (USA),
2009
- 2008 Joint Annual Meeting - Geological Society of America,
Houston (USA), 2008
- MODSIM2007 - Int. Congress on Modelling and Simulation,
Christchurch (New Zealand), 2007
- 7th Int. Symp. on Land Subsidence, Shanghai
(P.R. China), 2005
- 6th Int. Symp. on Land Subsidence, Ravenna
(Italy), 2000
- 5th Int. Symp. on Land Subsidence, The Hague
(The Netherlands), 1995
- J.F. Poland Symp. on Land Subsidence, California, 1995
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Numerical methods for stress/strain/pressure analysis in depleting poroelastic media
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Achievements:
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The stress/strain fields induced within poro-elasto-plastic and faulted media
(Biot equations) by fluid withdrawal/injection
have been numerically characterized. Particular analyses have been carried on
for overconsolidated geologic formations, infinite pore-pressure gradients,
different types of surface boundary conditions. Coupling between stress and
pore pressure has been proved to be weak on any time scale of practical
interest in a typical normally consolidated and pressurized basin.
Possible activation of faults crossing the reservoirs and induced seismicity
are simulated.
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Results published and submitted to:
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- International Journal of Rock Mechanics & Mining Sciences
- International Journal of Greenhouse Gas Control
- Energy Conversion and Management
- International Journal of Solids and Structures
- Water Resources Research
- Advances in Water Resources
- Journal of Geophysical Research - Solid Earth
- Journal of Geophysical Research - Earth Surface
- International Journal of Numerical and Analytical
Methods in Geomechanics
- Ground Water
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Results presented in:
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- XVI Int. Conf. on Computational Methods in Water
Resources, San Francisco (USA), 2008
- XVI Int. Conf. on Computational Methods in Water
Resources, Copenhagen (Denmark), 2006
- 16th ASCE Engineering Mechanics Conf., Seattle
(USA), 2003
- 2nd Biot Conf. on Poromechanics, Grenoble
(France), 2002
- Int. Symp. on Coupled Phenomena in Civil,
Mining & Petroleum Engineering, Sanya (P.R. China), 1999
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Characterization of geomechanical properties of rocks
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Achievements:
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Geomechanical simulations have been performed to assess the reliability
of the radioactive marker technique currently used to monitor deep
compactions. A geostatistical approach has been developed to derive a
mechanical constitutive model for the Northern Adriatic sedimentary basin
using these geophysical investigations. Rock compressibility is derived
by measurements of soil surface displacements (modelling calibration,
data assimulation)
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Results published and submitted to:
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- Journal of Petroleum Science and Engineering
- Journal of Geodynamics
- International Journal of Geomechanics
- SPE Reservoir Evaluation and Engineering
- Geotechnique
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Results presented in:
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- OMC2007 - Offshore Mediterranean Conference and Exhibition,
Ravenna (Italy), 2007
- 11th Int. Symp. on Deformation Measurements (FIG'03),
Santorini (Greece)
- 10th Int. Conf. on Computer Methods and Advances
in Geomechanics, Tuson (Texas), 2001
- ASME Mechanics and Material Conf., Blacksburg
(Virginia), 1999
- 5th Conf. Inter. Association of Mathematical
Geology, Bergen (Norway), 1999
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Modeling fluid dynamics in complex unconfined/confined aquifer systems. Risk analysis
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Achievements:
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A new quasi three-dimensional finite element model of groundwater
flow has been developed for highly compressible multi-aquifer
systems where aquitard permeability and elastic
storage are dependent on hydraulic drawdown. Application
of multiphase finite element models to simulate CO2
sequestration in deep geologic formations.
Application of two- quasi-three- and three dimensional finite
element models of unsaturated/saturated flow to a
number of real field cases. Modelling of artificial aquifer recharge.
Development of combined
GIS - numerical model procedures to perform risk analysis.
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Results published and submitted to:
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- Journal of Hydrology
- Journal of Hydrologic Engineering (ASCE)
- Water Resources Research
- Natural Hazards and Earth System Sciences
- Environmental & Engineering Geoscience
- Numerical Methods for PDE
- Mathematical and Computer Modelling
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Results presented in:
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- XVII Int. Conf. on Computational Methods in Water
Resources, San Francisco (USA), 2008
- IAHR - Int. Groundwater Symposium, Istanbul
(Turkey), 2008
- MODSIM2007 - Int. Congress on Modelling and Simulation,
Christchurch (New Zealand), 2007
- XV Int. Conf. on Computational Methods in Water
Resources, Chapel Hill (USA), 2004
- Int. Workshop "Reservoir storage of CO2",
Bergen (Norway), 2003
- Offshore Mediterranean Conf. & Exhibition, Ravenna
(Italy), 2003
- XIV Int. Conf. on Computational Methods in Water
Resources, Delft (The Netherlands), 2002
- 64th EAGE Conf. & Exibition, Firenze
(Italy), 2002
- 1st Int. Conf. on Saltwater Intrusion in Coastal
Aquifers, Essaouira (Marocco), 2001
- XIII Int. Conf. on Computational Methods in Water
Resources, Calgary (Canada), 2000
- 3rd Danish Idraulic Institute Software Conf.,
Copenhagen (Denmark), 1999
- XI Int. Conf. on Computational Methods in Water
Resources, Cancun (Mexico), 1996
- 5th Int. Symp. on Land Subsidence, The Hague
(The Netherlands), 1995
- Int. Symp. on Advanced Methods for Groundwater
Pollution Control, Udine (Italy), 1994
- X Int. Conf. on Computational Methods in Water
Resources, Heidelberg (Germany), 1994
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Using experimental field and laboratory, invasive and non-invasive
methodologies for the hydrologic characterization of coastal areas
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Achievements:
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The integrated use of traditional hydrologic measurements (e.g. by pluviometers,
pressure transducers, tensiometers, TDR, pt100) and geophysical surveys
(e.g., by SEV, time-lapsed electrical tomographies, seismic acquisitions, TDEM)
are used to characterize groundwater dynamics, saltwater intrusion in coastal
basins, and to provided reliable information for numerical modeling.
Hydrologic characterization of the peatlands bounding the
Venice Lagoon: hydrology, CO2 efflux into the atmosphere,
organic matter oxidation and related land subsidence, "mire breathing".
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Results published and submitted to:
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- Estuarine, Coastal and Shelf Science
- Water Resources Research
- Journal of Applied Geophysics
- Bollettino di Geofisica Teorica ed Applicata
- Climate Dynamics
- Environmental Geology
- Sensors
- Journal of the Geological Society, London
- Journal of Geophysical Research - Earth Surface
- Journal of Marine System
- Gephysical Research Letters
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Results presented in:
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- 1st Int. Conf. on Management Resources, Sustainable
Developments and Ecological Hazards (Ravage of the Planet),
Bariloche (Argentina), 2006
- XVI Int. Conf. on Computational Methods in Water
Resources, Copenhagen (Denmark), 2006
- 7th Int. Symp. on Land Subsidence, Shanghai
(P.R. China), 2005
- 12th Int. Peat Congress, Tampere
(Finland), 2004
- 1st Int. Conf. on Groundwater in Geological
Engineering, Bled (Slovenia), 2003
- Int. Conf. on Hydrology of Mediterranean and
Semi-arid Regions, Montpellier (France), 2003
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Monitoring land subsidence by traditional and satellite methods
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Achievements:
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The integrated use of geometric leveling, DGPS, and differential interferometry
(both DInSAR and PSI) has been proposed and applied to
check the vertical displacements of the ground surface in the
Venice and Ravenna areas. Detecting structural instability by PSI.
Application of PSI on artificial reflectors in lagoon and coastal environments.
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Results published and submitted to:
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- Nature Scientific Reports
- Physics and Chemistry of the Earth
- Geochemistry, Geophysics, Geosystems
- Surveys in Geophysics
- Rendiconti Lincei
- Terra Nova
- Tectonophysics
- Journal of Geophysical Research - Earth Surface
- Journal of Geophysical Research - Solid Earth
- Environmental Geology
- Remote Sensing of the Environment
- Journal of Marine System
- Gephysical Research Letters
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Results presented in:
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- Littoral 2008, Venice (Italy), 2008
- 2008 Joint Annual Meeting - Geological Society of America,
Houston (USA), 2008
- ENVISAT Symposium 2007, Monteux
(Switzerland), 2007
- 7th Int. Symp. on Land Subsidence, Shanghai
(P.R. China), 2005
- 32nd Int. Geological Congress,
Firenze (Italy), 2004
- Int. Geoscience and Remote Sensing Symp.,
Toulouse (France), 2003
- Int. Conf. UNESCO-BAS Project, Sofia
(Bulgaria), 2001
- 6th Int. Symp. on Land Subsidence, Ravenna
(Italy), 2000
- 5th Int. Symp. on Land Subsidence,
The Hague (The Netherlands), 1995
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Interaction between soils and crops
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Achievements:
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Lab and in-situ characterization of soils combined with proximal and remotely-sensed
vegetation indices are used to determine the soil properties playing a major role
on crop yield and its spatial variability.
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Results published and submitted to:
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- Computers and Electronics in Agriculture
- Procedia Environmental Sciences
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Results presented in:
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- AGU Fall Meeting, San Francisco (USA), 2011
- Wageningen Conference on Applied Soil Science
"Soil Science in a Changing World", Wageningen
(The Netherlands), 2011
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