3D Geothermal Modelling of the Mount Amiata Hydrothermal  System in Italy

Fulignati, Paolo; Marianelli, Paola; Sbrana, Alessandro; Ciani, Valentina

doi:10.3390/en7117434

Cited by 22 publications

(22 citation statements)

References 24 publications

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“…Similarly, clayey-marly lithotypes constitute the TUaB. These units act as a cap rock for the shallow geothermal reservoir hosted in the Burano formation Fulignati et al 2014;Romagnoli et al 2010). The primary permeability of the evaporites of the Burano formation is also very low.…”

Section: Permeabilitymentioning

confidence: 99%

Influence of depth, temperature, and structure of a crustal heat source on the geothermal reservoirs of Tuscany: numerical modelling and sensitivity study

et al. 2016

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© 2016, Ebigbo et al.Granitoid intrusions are the primary heat source of many deep geothermal reservoirs in Tuscany. The depth and shape of these plutons, characterised in this study by a prominent seismic reflector (the K horizon), may vary significantly within the spatial scale of interest. In an exploration field, simulations reveal the mechanisms by which such a heat source influences temperature distribution. A simple analysis quantifies the sensitivity of potentially measurable indicators (i.e. vertical temperature profiles and surface heat flow) to variations in depth, temperature, and shape of the heat source within given ranges of uncertainty

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Section: Permeabilitymentioning

confidence: 99%

Influence of depth, temperature, and structure of a crustal heat source on the geothermal reservoirs of Tuscany: numerical modelling and sensitivity study

et al. 2016

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“…Furthermore, as the database of seismic events (natural and induced) in and around the reservoir grows, the identification of important geological structures and features (such as the zone of brittle/plastic transition) becomes clearer [30,43]. Indeed, as shown by Ryan and Shalev [31], correlations between seismic velocity and in situ temperatures could even make remote sensing of reservoir temperatures feasible.…”

Section: Reservoir Management and Modellingmentioning

confidence: 99%

“…As further wells become available, their geological and production characteristics gradually expand the knowledge base for the reservoir, allowing refinement-or even wholesale replacement-of the prevailing conceptual model that is used to inform reservoir management decisions [43]. Furthermore, as the database of seismic events (natural and induced) in and around the reservoir grows, the identification of important geological structures and features (such as the zone of brittle/plastic transition) becomes clearer [30,43].…”

Section: Reservoir Management and Modellingmentioning

confidence: 99%

“…Nevertheless, the exploitation of high enthalpy resources is still effectively confined to countries with conspicuous active volcanism, such as Italy [43] and the countries of the circum-pacific "Ring of Fire," not least Japan [30]. The management of geothermal reservoirs requires judicious design and operation of both production and reinjection boreholes-the latter being used not only to prevent the environmental damage which discharge of hot and (usually) briny spent geothermal fluids to surface waters would cause, but also to maintain reservoir pressures at depth.…”

Section: Reservoir Management and Modellingmentioning

confidence: 99%

“…Indeed, as shown by Ryan and Shalev [31], correlations between seismic velocity and in situ temperatures could even make remote sensing of reservoir temperatures feasible. Thus an overall geothermal reservoir model comprises an assemblage of mutually consistent geological [43], geophysical [30,31] and hydrogeological models [43] should be developed in parallel, and iteratively updated to achieve harmonious coupling between them. The overall aim is a robust and constantly-evolving conceptual model of each geothermal reservoir, which is carefully adjusted to ensure that as much consistency as possible is achieved between concepts and available data.…”

Section: Reservoir Management and Modellingmentioning

confidence: 99%

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Geothermal Energy: Delivering on the Global Potential

2015

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Geothermal energy has been harnessed for recreational uses for millennia, but only for electricity generation for a little over a century. Although geothermal is unique amongst renewables for its baseload and renewable heat provision capabilities, uptake continues to lag far behind that of solar and wind. This is mainly attributable to (i) uncertainties over resource availability in poorly-explored reservoirs and (ii) the concentration of full-lifetime costs into early-stage capital expenditure (capex). Recent advances in reservoir characterization techniques are beginning to narrow the bounds of exploration uncertainty, both by improving estimates of reservoir geometry and properties, and by providing pre-drilling estimates of temperature at depth. Advances in drilling technologies and management have potential to significantly lower initial capex, while operating expenditure is being further reduced by more effective reservoir management-supported by robust models-and increasingly efficient energy conversion systems (flash, binary and combined-heat-and-power). Advances in characterization and modelling are also improving management of shallow low-enthalpy resources that can only be exploited using heat-pump technology. Taken together with increased public appreciation of the benefits of geothermal, the technology is finally ready to take its place as a mainstream renewable technology, exploited far beyond its traditional confines in the world's volcanic regions.

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