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University of Strathclyde secures funding

Published by , Digital Assistant Editor
World Coal,

Researchers at the University of Strathclyde have secured funding for a four-year project to study the ability of complex rock strata beneath the North Sea to trap carbon dioxide emissions (CO2) securely.

Their findings will help to provide the tools for selecting the most suitable CO2 storage sites.

The study will look at how CO2, when injected into rocks deep below ground, could migrate upwards through the overlying strata, or overburden. The greenhouse gas can become trapped by dissolving into water-filled spaces between the rock grains. In more complex geology, where the fluids flow through complex pathways, there may be more potential for trapping CO2 as it rises, thereby minimising the risk of it escaping to the surface.

However, fault zones cutting geological layers could potentially provide shortcuts past the layers where CO2 could be trapped. The project team will investigate how the faults and rock strata interact to change the pathways for CO2 flow through the overburden.

The researchers from Strathclyde, an SCCS partner institute, will work with fellow scientists from the Universities of Cambridge and Imperial, and the British Geological Survey as part of a larger research project funded by Natural Environment Research Council (NERC).

Professor Zoe Shipton, University of Strathclyde, who will lead the fault zone study, said: “The rock types found within fault zones will change depending on the rocks that they cut. By understanding how the fault rock types influence mechanisms such as capillary trapping, dissolution of CO2 in water and migration pathways, our work can guide strategies for quantifying and reducing the risks of CO2 leakage from geological storage sites. We will construct simplified models of flow along layered strata with cross-cutting faults, alongside our partners’ laboratory analogue experiments, in order to constrain the effect of geological complexity on the fate of CO2 leaking from a subsurface storage site.”

Edited from press release by

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