Coupled Process Models as a Tool for Analysing Hydrothermal Systems

Gessner, Klaus; Kühn, Michael; Rath, Volker; Kosack, C.; Blumenthal, M.; Clauser, Christoph

doi:10.1007/s10712-009-9067-1

Cited by 34 publications

(18 citation statements)

References 69 publications

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“…The heterogeneity of geological properties, such as porosity (Hu et al, 2009) and permeability (Meyer and Krause, 2006), the complexity of boundary conditions, and the coupling of flow, heat, stress, and chemical reactions (e.g., Domenico and Schwartz, 1998) usually requires numerical methods for solving subsurface flow problems (e.g., Aziz and Settari, 1979, Gessner et al, 2009, Miller et al, 2013. The finite volume method (two-point flux approximation) has been used widely in commercial simulators due to its simple seven-point stencil (in three dimensions) and robust convergence and monotonicity.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Modeling anisotropic flow and heat transport by using mimetic finite differences

Chen

Clauser

Marquart

et al. 2016

Advances in Water Resources

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Section: Accepted Manuscriptmentioning

confidence: 99%

Modeling anisotropic flow and heat transport by using mimetic finite differences

Chen

Clauser

Marquart

et al. 2016

Advances in Water Resources

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“…The simulations were performed by the Simulator for HEat and MAss Transport (SHEMAT code V.7.1) [ Clauser , ]. SHEMAT solves coupled problems involving fluid flow, heat transfer, species transport, and water‐rock interaction [e.g., Gessner et al ., ; Kühn , ; Kühn and Gessner , , b] in a wide variety of thermal and hydrogeological problems [e.g., Kühn et al ., ; Kühn and Stöfen , ; Kühn and Günther , ].…”

Section: Porosity and Permeability Estimationmentioning

confidence: 99%

Reconstruction of rocks petrophysical properties as input data for reservoir modeling

Cantucci

Montegrossi

Lucci

et al. 2016

Geochem Geophys Geosyst

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The worldwide increasing energy demand triggered studies focused on defining the underground energy potential even in areas previously discharged or neglected. Nowadays, geological gas storage (CO2 and/or CH4) and geothermal energy are considered strategic for low‐carbon energy development. A widespread and safe application of these technologies needs an accurate characterization of the underground, in terms of geology, hydrogeology, geochemistry, and geomechanics. However, during prefeasibility study‐stage, the limited number of available direct measurements of reservoirs, and the high costs of reopening closed deep wells must be taken into account. The aim of this work is to overcome these limits, proposing a new methodology to reconstruct vertical profiles, from surface to reservoir base, of: (i) thermal capacity, (ii) thermal conductivity, (iii) porosity, and (iv) permeability, through integration of well‐log information, petrographic observations on inland outcropping samples, and flow and heat transport modeling. As case study to test our procedure we selected a deep structure, located in the medium Tyrrhenian Sea (Italy). Obtained results are consistent with measured data, confirming the validity of the proposed model. Notwithstanding intrinsic limitations due to manual calibration of the model with measured data, this methodology represents an useful tool for reservoir and geochemical modelers that need to define petrophysical input data for underground modeling before the well reopening.

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“…Due to its retrograde solubility (decreasing solubility with increasing temperature, Gessner et al 2009, this volume), anhydrite is dissolved at the top of the model, calcium and sulphate are transported with the water, and subsequently anhydrite precipitates at the bottom of the model area. With proceeding simulation the anhydrite distribution changes significantly.…”

Section: Example Of a Chemically Induced Flow Fieldmentioning

confidence: 99%

Modelling Feedback of Chemical Reactions on Flow Fields in Hydrothermal Systems

Kühn

2009

Surv Geophys

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Coupled reactive transport models of hydrothermal systems provide new insights and deeper understanding of the processes occurring due to fluid flow, heat transfer, solute transport, and chemical reactions. Basic concepts of species transport (diffusion, dispersion, and advection) and chemical precipitation and dissolution reactions are discussed, and five end-member types of reactive transport environments are introduced. One of these reactive transport environments, named 'reactions within thermal gradients', is used to demonstrate how free thermal convection can lead to redeposition of minerals and, due to the feedback of reaction on the flow field, a change of the convection pattern. The direct consequence of changing the flow field is a significant variation of the temperature distribution within the modelled area. With the example it is shown how reactive transport simulation can be applied for the detailed study of fossil and recent hydrothermal systems.

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Coupled Process Models as a Tool for Analysing Hydrothermal Systems

Cited by 34 publications

References 69 publications

Modeling anisotropic flow and heat transport by using mimetic finite differences

Modeling anisotropic flow and heat transport by using mimetic finite differences

Reconstruction of rocks petrophysical properties as input data for reservoir modeling

Modelling Feedback of Chemical Reactions on Flow Fields in Hydrothermal Systems

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