Conference Proceedings

Stepping into the same river twice: field evidence for the repeatability of a CO2 injection test

J Ennis-King, T LaForce, L Paterson, JR Black, HP Vu, RR Haese, S Serno, S Gilfillan, G Johnson, B Freifeld, R Singh, T Dixon (ed.), L Laloui (ed.), S Twinning (ed.)



A single well characterisation test was conducted at the CO2CRC Otway storage site in Victoria, Australia, in 2011 and repeated in 2014. The near-well permeability was found to have declined nearly 60% since the 2011 test, while the residual saturation inferred from a variety of techniques was lower in 2014. There was a significant change in water chemistry, suggesting an alteration of near-well reservoir properties. Possible reasons for these changes are explored, and the implications for other field tests are discussed. Published by Elsevier Ltd.


Awarded by EPSRC

Funding Acknowledgements

The authors acknowledge the role of CO2CRC Ltd in jointly conceptualizing the project, providing technical oversight and data, and funding this research. The authors also acknowledge financial assistance provided through Australian National Low Emissions Coal Research and Development (ANLEC R&D). ANLEC R&D is supported by Australian Coal Association Low Emissions Technology Limited and the Australian Government through the Clean Energy Initiative. Funding was also provided by Callide Oxyfuel Services Pty Ltd (COSPL). COSPL is a joint venture between Australian and Japanese companies and governments. Additional support was provided through the Carbon Storage Program, U.S. DOE, Assistant Secretary for Fossil Energy, Office of Clean Coal and Carbon Management through the NETL. Chris Boreham published with the permission of the CEO, Geoscience Australia. Stuart Gilfillan, Gareth Johnson and Sascha Serno were supported by funding from the UK CCS Research Centre (UKCCSRC) through a Call 2 grant and an ECR International Travel Exchange Fund. The UKCCSRC is funded by the EPSRC as part of the RCUK Energy Programme. 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 onsite support. The authors also thank Norifumi Todaka-san (JPower) for sharing ideas and contributions to the scientific discussion.