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Type: Conference paper
Title: Determining residual CO₂ saturation through a dissolution test – Results from the CO2CRC Otway Project
Other Titles: Determining residual CO(2) saturation through a dissolution test - Results from the CO2CRC Otway Project
Author: Haese, R.
LaForce, T.
Boreham, C.
Ennis-King, J.
Freifeld, B.
Paterson, L.
Schacht, U.
Citation: 11th International Conference on Greenhouse Gas Control Technologies (GHGT-11); Energy Procedia, vol. 37, 2013 / vol.37, pp.5379-5386
Publisher: Elsevier BV
Publisher Place: Netherlands
Issue Date: 2013
Series/Report no.: Energy Procedia
ISSN: 1876-6102
Conference Name: International Conference on Greenhouse Gas Control Technologies (GHGT) (18 Nov 2012 - 22 Nov 2012 : Kyoto, Japan)
Statement of
R.R. Haese, T. LaForce, C. Boreham, J. Ennis-King, B.M. Freifeld, L. Paterson, U. Schacht
Abstract: Residual CO2 trapping (Sgr-CO2) is a key mechanism for geological CO2 storage. The CO2CRC undertook a sequence of field tests with the aim of comparing different ways of determining Sgr-CO2 including a dissolution test. Dissolution test results show an unexpectedly early breakthrough and low maximum CO2 concentrations in the back- produced water making the data inconclusive when using traditional data interpretation. Here, we consider two conditions to explain the observations: Firstly, residual CO2 is vertically unevenly distributed and, secondly, the fluid and residual CO2 are not in equilibrium. Furthermore, we postulate localised flow channels have formed during the 3- month test period caused by advective flow of CO2-saturated, low pH water leading to transport-controlled mineral dissolution.
Keywords: storage capacity; single well test; residual CO2; heterogeneity
Rights: © 2013 The Authors. Open access under CC BY-NC-ND license [].
RMID: 0020137182
DOI: 10.1016/j.egypro.2013.06.456
Appears in Collections:Australian School of Petroleum publications

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