Fracture transmissivity evolution due to silica dissolution/precipitation during geothermal heat extraction

Fracture transmissivity evolution due to silica dissolution/precipitation during geothermal heat... •Coupled THC model of reactive alteration and permeability evolution in silicic reservoirs.•Temperature dependence of reaction kinetics more important than that of silica solubility.•For oversaturated injection, precipitation along a band confines the flow system.•Freshwater injection may be effective for geothermal reservoirs in silicic rocks.•Heterogeneity affects energy production when the correlation lengths are large. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Geothermics Elsevier

Fracture transmissivity evolution due to silica dissolution/precipitation during geothermal heat extraction

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier Ltd
ISSN
0375-6505
eISSN
1879-3576
D.O.I.
10.1016/j.geothermics.2015.06.011
Publisher site
See Article on Publisher Site

Abstract

•Coupled THC model of reactive alteration and permeability evolution in silicic reservoirs.•Temperature dependence of reaction kinetics more important than that of silica solubility.•For oversaturated injection, precipitation along a band confines the flow system.•Freshwater injection may be effective for geothermal reservoirs in silicic rocks.•Heterogeneity affects energy production when the correlation lengths are large.

Journal

GeothermicsElsevier

Published: Sep 1, 2015

References

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