Thermo-mechanical Simulations Confirm: Temperature-dependent Mudrock Properties 
are Nice to have in Far-field Environmental Assessments of Underground Coal 
Gasification

Otto, C.; Kempka, T.

doi:10.1016/j.egypro.2015.07.875

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Thermo-mechanical Simulations Confirm: Temperature-dependent Mudrock Properties are Nice to have in Far-field Environmental Assessments of Underground Coal Gasification

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Otto, C.
5.3 Hydrogeology, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/kempka

Kempka, T.
5.3 Hydrogeology, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Citation

Otto, C., Kempka, T. (2015): Thermo-mechanical Simulations Confirm: Temperature-dependent Mudrock Properties are Nice to have in Far-field Environmental Assessments of Underground Coal Gasification. - Energy Procedia, 76, 582-591.
https://doi.org/10.1016/j.egypro.2015.07.875

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_1284926

Abstract

Coupled thermo-mechanical simulations were carried out to quantify permeability changes in representative coal measure strata surrounding an underground coal gasification (UCG) reactor. Comparing temperature-dependent and -independent rock properties applied in our simulations, notable differences in rock failure behavior, but only insignificant differences in spatial permeability development are observed. Hence, temperature-dependent parameters are required for simulations of the close reactor vicinity, while far-field models can be sufficiently determined by temperature-independent parameters. Considering our findings in the large-scale assessment of potential environmental impacts of UCG, representative coupled simulations based on complex thermo-hydro-mechanical and regional-scale models become computationally feasible.