Journal article
The geochemical effects of O2 and SO2 as CO2 impurities on fluid-rock reactions in a CO2 storage reservoir
HP Vu, JR Black, RR Haese
International Journal of Greenhouse Gas Control | ELSEVIER SCI LTD | Published : 2018
Abstract
Costs for CO2 capture could be reduced if CO2 gas impurities can be co-injected and do not adversely affect the long-term CO2 containment. This project, as a part of the Callide Oxyfuel Project, investigates the geochemical impacts of the CO2 impurities SO2 and O2 on mineral-fluid reactions in a siliciclastic reservoir. In a single-well push-pull field experiment CO2-saturated water with and without impurities was injected into the reservoir. The injection water was allowed to interact with minerals in the reservoir for three weeks, during which water was back-produced and sampled on three occasions. Four soluble tracers were added to the injection water to estimate the proportions of inject..
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Funding Acknowledgements
Thanks to graduate and undergraduate students Syed Anas Ali, Cesar Castaneda Herrera, Scott Ooi for their help conducting the fieldwork. The authors thank Lawrence Berkeley National Laboratory for access to the U-tube system, the site operator (Upstream Production Solutions), Mr Rajindar Singh (CO2CRC Ltd.) and Dr Chris Spero (COSPL) for their invaluable logistical and on site support. We acknowledge funding provided by the CO2CRC Ltd and Callide Oxyfuel Services Pty Ltd (COSPL) as a part of the Callide Oxyfuel Project. COSPL is a joint venture between Australian and Japanese companies and governments. Two anonymous reviewers are also thanked for the comments, which help to improve the manuscript.