Cement/rock interaction in geothermal wells. The effect of silica addition to the cement and the impact of CO2 enriched brine

Cement/rock interaction in geothermal wells. The effect of silica addition to the cement and the... •The extent of reaction between the cement paste and the rock formation is considerably dependent on the amount and type of added silica.•The particle size distribution and the workability of the fresh paste are also likely to have a significant impact on the ITZ extent.•The cement/rock interaction and the carbonation reaction itself are regulated by the carbonation of the various cement minerals present.•The porous carbonation product of tobermorite enhanced the penetration of CO2 enriched brine into the cement, increasing the carbonation rate. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Geothermics Elsevier

Cement/rock interaction in geothermal wells. The effect of silica addition to the cement and the impact of CO2 enriched brine

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0375-6505
eISSN
1879-3576
D.O.I.
10.1016/j.geothermics.2018.01.004
Publisher site
See Article on Publisher Site

Abstract

•The extent of reaction between the cement paste and the rock formation is considerably dependent on the amount and type of added silica.•The particle size distribution and the workability of the fresh paste are also likely to have a significant impact on the ITZ extent.•The cement/rock interaction and the carbonation reaction itself are regulated by the carbonation of the various cement minerals present.•The porous carbonation product of tobermorite enhanced the penetration of CO2 enriched brine into the cement, increasing the carbonation rate.

Journal

GeothermicsElsevier

Published: May 1, 2018

References

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