"Numerical modeling of wave processes in fractured porous fluid-saturated media"
Novikov M.A., Lisitsa V.V., and Kozyaev A.A.

One of important problems in modern applied geophysics is to distinguish the specific indications of developed fractures in geological formations using seismic data. In addition, it is necessary to distinguish the fluid-saturated systems of cracks capable of providing a sufficient hydrodynamic permeability of reservoirs. In this paper we propose a numerical algorithm to study wave fields in fractured porous fluid-saturated media on the basis of a finite-difference approximation of Biot's equations. Our numerical results show that the intersecting fractures significantly increase the absorption of seismic energy due to the appearance of fluid flows in cracks. A detailed frequency analysis of seismic wave attenuation is given.

Keywords: Biot's equations, finite-difference schemes, seismic waves, fractured porous media, seismic energy absorption, fracture connectivity.

  • Novikov M.A. – Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences; prospekt Koptyuga 3, Novosibirsk, 630090, Russia; Junior Scientist, e-mail: NovikovMA@ipgg.sbras.ru
  • Lisitsa V.V. – Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences; prospekt Koptyuga 3, Novosibirsk, 630090, Russia; Ph.D., Associate Professor, Head of Laboratory, e-mail: Lisitsavv@ipgg.sbras.ru
  • Kozyaev A.A. – Institute of Petroleum and Natural Gas Engineering, Siberian Federal University; prospekt Svobodny 82, Krasnoyarsk, 660041, Russia; Graduate Student, e-mail: aa.kozyaev@gmail.com