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Effects of plastic deformation on poroelastic pore pressure coefficients

In the context of CO2 storage, experimental estimation of poromechanical properties of overburden shales is one of the crucial elements of their sealing quality and integrity assessment.

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Presenter: Marcin Ireneusz Duda, SINTEF

However, these properties are not constant and may be affected by the processes taking place in the proximity of an injection zone, such as accumulation of non-elastic deformation in and around faulting zones.

In this presentation, we will explore the influence of the increasing plastification of overburden shales on the parameters governing their pore pressure response to stress changes, and thereby directly affecting CO2 storage safety.

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