Transversely Isotropic Poroelasticity Arising from Thin Isotropic Layers

نویسندگان

  • James G. Berryman
  • Lawrence Livermore
چکیده

Percolation phenomena play central roles in the eld of poroelasticity, where two distinct sets of percolating continua intertwine. A connected solid frame forms the basis of the elastic behavior of a poroelastic medium in the presence of external con ning forces, while connected pores permit a percolating uid (if present) to in uence the mechanical response of the system from within. The present paper discusses isotropic and anisotropic poroelastic media and establishes general formulas for the behavior of transversely isotropic poroelasticity arising from laminations of isotropic components. The Backus averaging method is shown to provide elementary means of constructing general formulas. The results for con ned uids are then compared with the more general Gassmann formulas that must be satis ed by any anisotropic poroelastic medium and found to be in complete agreement.

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تاریخ انتشار 1997