Simulation of CO₂ Injection into a Baltic Sea Saline Aquifer and Seismic Monitoring of the Plume

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• 作者：Saba Joodaki ; Auli Niemi ; Christopher Juhlin ; Daniel Sopher ; Monika Iv ; ic ; Mikael Erlstr?m
• 关键词：Seismic monitoring ; CO2 geological storage ; Biot-Gassmann theory
• 刊名：Energy Procedia
• 出版年：2013
• 出版时间：2013
• 年：2013
• 卷：40
• 期：Complete
• 页码：355-364
• 全文大小：634 K

文摘

TOUGH2/ECO2N was used to simulate CO₂ injection into a saline aquifer in the Baltic Sea and the effect of different amounts of CO₂ injection on the seismic response. The Biot-Gassmann model was used to convert the simulated saturation and densities to seismic velocities and synthetic seismic responses before and after injection were compared. The results show that the amplitude changes in the seismic response are detectable even for small amounts of injected CO₂, while noticeable signs of velocity pushdown, as a signature of the CO₂ substitution, could only be observed if the injection rate is high enough.