Presence of planar fractures in a fluid-saturated porous rock causes significant anisotropic attenuation and dispersion of seismic waves mainly due to wave-induced fluid flow (mesoscopic loss) between porous and fractures. The most recent studies are focused on anisotropic attenuation and velocity dispersion. However, research about reflection response at an interface between a non-dispersive medium and fluid-saturated porous rocks with aligned fractures is poor. In this paper, we have investigated the characteristics of reflection amplitude variations as a function of frequency and incident-angle and studied on how formation parameters impact on its dispersive and anisotropic feature. The results show that PP-wave reflection varies with frequency in low frequency and small incident angle strongly than in high frequency and large incident angle. Besides that the dispersion strength and anisotropy of PP-wave reflection strongly influenced by porosity, fracture spatial period, normal fracture weakness and it is independent with shear fracture weakness. These results could provide insight for frequency-dependent AVO analysis and inversion.


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  1. Brajanovski, M. and B.Gurevich, et al.
    [2003]. Attenuation and dispersion of compressional waves in porous rocks with aligned fractures 2003. 73rd Annual internal meeting SEG Expanded Abstracts: 1620–1623.
    [Google Scholar]
  2. Carcione, J. M. and B.Gurevich, et al.
    [2013]. Angular and frequency-dependent wave velocity and attenuation in fractured porous media. Pure and applied geophysics170 (11): 1673–1683.
    [Google Scholar]
  3. Carcione, J. M.
    , [2007], Wave fields in real media: Wave propagation in anisotropic, anelastic, porous and electromagnetic media, Handbook of Geophysical Exploration, vol. 38, Elsevier (2nd edition, revised and extended).
    [Google Scholar]
  4. , [1997], Reflection and transmission of qP-qS plane waves at a plane boundary between viscoelastic transversely isotropic media: Geophysical Journal International, 129, 669–680.
    [Google Scholar]
  5. Krzikalla, F. and T. M.Müller
    [2011]. Anisotropic P-SV-wave dispersion and attenuation due to inter-layer flow in thinly layered porous rocks 2011. Geophysics76 (3): WA135–WA145.
    [Google Scholar]
  6. Krief, M. and J.Garat, et al.
    (1990). A petrophysical interpretation using the velocities of P and S waves (Full-waveform Sonic). The Log Anayst31 (1): 355–369.
    [Google Scholar]
  7. Liu, L. and S.Cao, et al.
    [2011]. Poroelastic analysis of frequency-dependent amplitude-versus-offset. Geophysics76 (3): C31–40.
    [Google Scholar]
  8. Lambert, G. and B.Gurevich, et al.
    [2006]. Attenuation and dispersion of P-waves in porous rocks with planar fratures:Comparison of theory and numerical simulations. Geophysics71 (3): N41–N45.
    [Google Scholar]
  9. Ren, H. and G.Goloshubin, et al.
    [2009]. Poroelastic analysis of amplitude-versus-frequency variations. Geophysics74 (6): N41–N48.
    [Google Scholar]

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