Nonlinear Viscoelastic Compaction in Sedimentary Basins

Details Nonlinear Viscoelastic Compaction in Sedimentary Basins Nonlinear Viscoelastic Compaction in Sedimentary Basins

2010-03-28

arxiv.org/abs/1003.5373v1

X. S. Yang, Nonlinear viscoelastic compaction in sedimentary basins, Nonlinear Processes in Geophysics, Vol. 7, 1-7 (2000).

Physics

Geophysics

Scientific paper

In the mathematical modelling of sediment compaction and porous media flow, the rheological behaviour of sediments is typically modelled in terms of a nonlinear relationship between effective pressure $p_e$ and porosity $\phi$, that is $p_e=p_e(\phi)$. The compaction law is essentially a poroelastic one. However, viscous compaction due to pressure solution becomes important at larger depths and causes this relationship to become more akin to a viscous rheology. A generalised viscoelastic compaction model of Maxwell type is formulated, and different styles of nonlinear behaviour are asymptotically analysed and compared in this paper.

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