Poroelastic effective media model for fractured and layered reservoir rock
- Karlsruhe Univ. (Germany)
Reservoir rocks, consisting of fractured and layered sediments are not purely elastic materials, but should be described as porous, fluid saturated composites. In this paper we determine an effective media model for vertically fractured, thinly layered reservoir rocks. The effective medium is orthorhombic, since the vertical fracture planes are perpendicular to the x-axis and the layering is perpendicular to the z-axis, cf. By averaging over many thin layers consisting of materials with different poroelastic moduli a vertically heterogeneous medium will be replaced by a homogeneous, anisotropic, effective medium. The layer thickness must be small compared to the wavelength of seismic waves propagating in the medium. Since the permeability of a porous medium will vary from layer to layer as the poroelastic constants do, we calculate the effective anisotropic permeability as a function of the fluctuations of porosity.
- OSTI ID:
- 542927
- Report Number(s):
- CONF-951013-; TRN: 97:004463-0115
- Resource Relation:
- Conference: SEG `95: 65. annual meeting and international exposition of the Society of Exploration Geophysicists (SEG), Houston, TX (United States), 8-13 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of SEG/Houston `95 - technical program; PB: 1623 p.
- Country of Publication:
- United States
- Language:
- English
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