Abstract
We present an uncertainty analysis of thermo-hydro-mechanical (THM) coupled processes in a typical hot-dry-rock reservoir in crystalline rock. The conceptual model is an equivalent porous media approach which is adequate for available data from the Urach Spa and Falkenberg sites (Germany). The finite element method (FEM) is used for the numerical analysis or fully coupled THM processes, including thermal water flow, advective-diffusive heat transport, and thermo-poro-elasticity. Reservoir parameters are considered as spatial random variables and their realizations are generated using conditional Gaussian simulation. The results show the influence of parameter ranges on the reservoir evolution during long-term heat extraction taking into account fully coupled THM processes. We found that the most significant factors are permeability and heat capacity variations. The study demonstrates the importance of taking parameter uncertainties into account for geothermal reservoir evaluation in order to assess the predictability of numerical modelling.
| Original language | English |
|---|---|
| Title of host publication | IAHS-AISH Publication |
| Pages | 57-62 |
| Number of pages | 6 |
| Volume | 341 |
| Publication status | Published - 2011 |
| Event | 7th International Conference on Calibration and Reliability in Groundwater Modelling: Managing Groundwater and the Environment, ModelCARE 2009 - Wuhan, China Duration: Sep 20 2009 → Sep 23 2009 |
Other
| Other | 7th International Conference on Calibration and Reliability in Groundwater Modelling: Managing Groundwater and the Environment, ModelCARE 2009 |
|---|---|
| Country | China |
| City | Wuhan |
| Period | 9/20/09 → 9/23/09 |
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Keywords
- Hot-dry-rock geothermal reservoir
- Monte-Carlo simulation
- Thermo-hydro- mechanical coupled processes
- Uncertainty analysis
- Visualization
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
Cite this
Numerical analysis and visualization of uncertainty effects in thermo-hydro-mechanical coupled processes in a hot-dry-rock geothermal reservoir. / Watanabe, Norihiro; Zehner, Björn; Wang, Wenqing; McDermott, Christopher I.; Taniguchi, Takeo; Kolditz, Olaf.
IAHS-AISH Publication. Vol. 341 2011. p. 57-62.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Numerical analysis and visualization of uncertainty effects in thermo-hydro-mechanical coupled processes in a hot-dry-rock geothermal reservoir
AU - Watanabe, Norihiro
AU - Zehner, Björn
AU - Wang, Wenqing
AU - McDermott, Christopher I.
AU - Taniguchi, Takeo
AU - Kolditz, Olaf
PY - 2011
Y1 - 2011
N2 - We present an uncertainty analysis of thermo-hydro-mechanical (THM) coupled processes in a typical hot-dry-rock reservoir in crystalline rock. The conceptual model is an equivalent porous media approach which is adequate for available data from the Urach Spa and Falkenberg sites (Germany). The finite element method (FEM) is used for the numerical analysis or fully coupled THM processes, including thermal water flow, advective-diffusive heat transport, and thermo-poro-elasticity. Reservoir parameters are considered as spatial random variables and their realizations are generated using conditional Gaussian simulation. The results show the influence of parameter ranges on the reservoir evolution during long-term heat extraction taking into account fully coupled THM processes. We found that the most significant factors are permeability and heat capacity variations. The study demonstrates the importance of taking parameter uncertainties into account for geothermal reservoir evaluation in order to assess the predictability of numerical modelling.
AB - We present an uncertainty analysis of thermo-hydro-mechanical (THM) coupled processes in a typical hot-dry-rock reservoir in crystalline rock. The conceptual model is an equivalent porous media approach which is adequate for available data from the Urach Spa and Falkenberg sites (Germany). The finite element method (FEM) is used for the numerical analysis or fully coupled THM processes, including thermal water flow, advective-diffusive heat transport, and thermo-poro-elasticity. Reservoir parameters are considered as spatial random variables and their realizations are generated using conditional Gaussian simulation. The results show the influence of parameter ranges on the reservoir evolution during long-term heat extraction taking into account fully coupled THM processes. We found that the most significant factors are permeability and heat capacity variations. The study demonstrates the importance of taking parameter uncertainties into account for geothermal reservoir evaluation in order to assess the predictability of numerical modelling.
KW - Hot-dry-rock geothermal reservoir
KW - Monte-Carlo simulation
KW - Thermo-hydro- mechanical coupled processes
KW - Uncertainty analysis
KW - Visualization
UR - http://www.scopus.com/inward/record.url?scp=84860548585&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84860548585&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84860548585
SN - 9781907161155
VL - 341
SP - 57
EP - 62
BT - IAHS-AISH Publication
ER -