Numerical Estimation of Seismic Wave Attenuation in Fractured Porous Fluid-Saturated Media
Study of wave-induced fluid flow (WIFF) became actual in geophysics last years, because attenuation caused by this effect can serve as indicator of fractured highly-permeable reservoirs. In our work we model two-scale fractured domains with small scale fractures forming percolating clusters. Statistical geometry analysis and numerical wave propagation simulations using finite-difference approximation of Biot’s dynamic equations were done to estimate seismic attenuation and investigate the dependence of attenuation due to WIFF on percolation length. Theoretical predictions of at tenuation due to scattering are also provided. Obtained estimations demonstrate sufficient correlation between fracture connectivity and attenuation of waves propagating in considered fractured media.
KeywordsWave-induced fluid flow Seismic attenuation Finite difference method Biot model
This research was supported by Russian Foundation for Basic Research grants no. 18-05-00031, 18-01-00579, 16-05-00800. The computations were performed using supercomputer “Lomonosov” of Moscow State University and cluster NKS-30T+GPU of the Siberian supercomputer center.
- 7.Masson, Y.J., Pride, S.R.: Poroelastic finite difference modeling of seismic attenuation and dispersion due to mesoscopic-scale heterogeneity. J. Geophys. Res.: Solid Earth 112(B03), 204 (2007)Google Scholar
- 9.Novikov, M., et al.: Numerical study of fracture connectivity response in seismic wavefields. In: SEG Technical Program Expanded Abstracts 2017, pp. 3786–3790. Society of Exploration Geophysicists, Tulsa (2017)Google Scholar