TY - JOUR
T1 - The effect of hot water injection on sandstone permeability
AU - Rosenbrand, Esther
AU - Haugwitz, Christian
AU - Jacobsen, Peter Sally Munch
AU - Kjøller, Claus
AU - Fabricius, Ida Lykke
N1 - Funding Information:
This research was funded by the Danish Council for Strategic Research as part of the HeHo project grant . Thanks are due to Jacob Fabricius Riis for his illustration of the experimental setup.We appreciate constructive reviews by Dr. Harald Milsch and by an anonymous reviewer that improved the manuscript.
PY - 2014/4
Y1 - 2014/4
N2 - Seasonal energy storage can be achieved by hot water injection in geothermal sandstone aquifers. We present an analysis of literature data in combination with new short-term flow through permeability experiments in order to address physical and physico-chemical mechanisms that can alter permeability when sandstones are heated from 20. °C to 70-200. °C. The pore surface area per unit pore volume was used to normalise permeability data, so that the temperature effect on samples with different pore size could be compared. In sandstones containing the clay mineral kaolinite, heating reduced permeability, suggesting that the observed permeability reduction was due to kaolinite mobilisation. The effect was partly reversible.
AB - Seasonal energy storage can be achieved by hot water injection in geothermal sandstone aquifers. We present an analysis of literature data in combination with new short-term flow through permeability experiments in order to address physical and physico-chemical mechanisms that can alter permeability when sandstones are heated from 20. °C to 70-200. °C. The pore surface area per unit pore volume was used to normalise permeability data, so that the temperature effect on samples with different pore size could be compared. In sandstones containing the clay mineral kaolinite, heating reduced permeability, suggesting that the observed permeability reduction was due to kaolinite mobilisation. The effect was partly reversible.
KW - Kaolinite mobilisation
KW - Permeability
KW - Sandstone
KW - Temperature dependency
UR - http://www.scopus.com/inward/record.url?scp=84887003295&partnerID=8YFLogxK
U2 - 10.1016/j.geothermics.2013.09.006
DO - 10.1016/j.geothermics.2013.09.006
M3 - Article
VL - 50
SP - 155
EP - 166
JO - Geothermics
JF - Geothermics
SN - 0375-6505
ER -
