Conference Proceedings

Preliminary experiments for a chemical reactive barrier as a leakage mitigation technology

Cesar A Castaneda-Herrera, Jay R Black, Geoff W Stevens, Ralf R Haese, T Dixon (ed.), L Laloui (ed.), S Twinning (ed.)

Energy Procedia | ELSEVIER SCIENCE BV | Published : 2017

Abstract

Carbon capture and storage (CCS) risk assessments have proposed technologies to remediate carbon dioxide (CO2) leakage. One of these technologies utilizes an alkaline silicate solution forming a chemical barrier when mixed with CO2-enriched water. This study characterizes the physical properties of the silicate solution and the formation of the chemical barrier in a small-scale flow-through experiment. Results show that barrier formation using the silicate solution is effective as a drop in permeability by one order of magnitude is observed in our preliminary experiments. These preliminary results will be used for the design of future core-flood experiments and reactive-transport modelling.

Grants

Funding Acknowledgements

Special acknowledgements to the CO2CRC and the Peter Cook Center for CCS Research for their roles and support in the conceptualization, technical oversight and funding of the project.