Journal article
Characterizing long-term CO2-water-rock reaction pathways to identify tracers of CO2 migration during geological storage in a low-salinity, siliciclastic reservoir system
KN Horner, U Schacht, RR Haese
Chemical Geology | Elsevier | Published : 2015
Abstract
Given the prevailing use of saline reservoirs for geological CO2 storage projects, limited data are available on the geochemical evolution of formation water chemistry during geological CO2 storage in low-salinity formations. The low-salinity (total dissolved solids0.7085) indicating incongruent dissolution of the reservoir matrix. Carbonate and authigenic clay dissolution are expected to be the primary reaction pathways regulating long-term formation water composition during geological CO2 storage in the Surat Basin, with lesser contributions from dissolution of the clastic matrix.
Grants
Awarded by Australian National Low Emissions Coal Research and Development (ANLEC RD)
Funding Acknowledgements
The authors wish to acknowledge financial assistance provided through the Australian National Low Emissions Coal Research and Development (ANLEC R&D) project 03-1110-0088. ANLEC R&D is supported by Australian Coal Association Low Emissions Technology Limited and the Australian Government through the Clean Energy Initiative. The authors also thank the CO2CRC for sponsoring this research and acknowledge the funding provided by the Commonwealth of Australia and industry sponsors through the CO2CRC Program. Thanks to Dirk Kirste for assistance with development of the kinetic modeling scripts. This paper is published with the permission of the CEO, Geoscience Australia.