Modelling CO2 plume spreading in highly heterogeneous rocks with anisotropic, rate-dependent saturation functions: A field-data based numeric simulation study of Otway

Qi Shao,Maartje Boon,AbdAllah Youssef,Kuncho Kurtev,Sally M. Benson,Stephan K. Matthai

International Journal of Greenhouse Gas Control（2022）

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摘要

•Rate-dependent anisotropic saturation functions used to simulate CO2 plume spreading.•Different plume shapes as compared to those modelled with conventional functions.•Nested geologic heterogeneity is a major control on plume migration.•Buoyancy force drives CO2 to up-dip direction in inclined strata.•High injection rates enhance lateral spreading and low rates promote vertical migration.

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关键词

CO2 plume spreading,Compositional simulation,Heterogeneity,Fingering,Rate-dependence,Anisotropic saturation functions

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