TY - GEN

T1 - Numerical analysis of mesoscale fracture connectivity effect on seismic attenuation in fractured porous fluid-saturated media

AU - Novikov, M.

AU - Lisitsa, V.

N1 - Funding Information: M. Novikov implemented the algorithm for numerical simulation of wave propagation in poroelastic media being employed by Sobolev Institute of Mathematics under financial support of the Russian Science Foundation grant no. 19-77-20004, and performed numerical experiments as part of his PhD study at Novosibirsk State Institute. Interpretation of the results was made by V. Lisitsa under support of the Russian President Grant Agency grant no. MD-20.2019.5. Publisher Copyright: © 2020 Saint Petersburg 2020 - Geosciences: Converting Knowledge into Resources. All rights reserved. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2020

Y1 - 2020

N2 - In our study, we investigate the correlation between seismic attenuation and fracture connectivity in fractured porous fluid-saturated media. In particular, wave-induced fluid flow attenuation mechanism manifests itself between fracture-filling material and background as well as within intersecting fractures. To estimate seismic wave attenuation concerning fracture connectivity, we first statistically generate fracture networks with different percolation length through whole fracture system. Then we perform numerical modeling of plane wave propagation within generated models. Using resulting wavefields, we numerically estimate frequency-dependent attenuation. Both cases of high-permeable and almost non-permeable background are considered. Results show that the dominant parameter affecting attenuation is fracture connectivity. However, attenuation increase with connectivity increase is caused by intensifying fracture-to-background WIFF, while fracture-to-fracture WIFF remains local and depends mostly on local fracture connectivity.

AB - In our study, we investigate the correlation between seismic attenuation and fracture connectivity in fractured porous fluid-saturated media. In particular, wave-induced fluid flow attenuation mechanism manifests itself between fracture-filling material and background as well as within intersecting fractures. To estimate seismic wave attenuation concerning fracture connectivity, we first statistically generate fracture networks with different percolation length through whole fracture system. Then we perform numerical modeling of plane wave propagation within generated models. Using resulting wavefields, we numerically estimate frequency-dependent attenuation. Both cases of high-permeable and almost non-permeable background are considered. Results show that the dominant parameter affecting attenuation is fracture connectivity. However, attenuation increase with connectivity increase is caused by intensifying fracture-to-background WIFF, while fracture-to-fracture WIFF remains local and depends mostly on local fracture connectivity.

UR - http://www.scopus.com/inward/record.url?scp=85099589967&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85099589967

T3 - Saint Petersburg 2020 - Geosciences: Converting Knowledge into Resources

BT - Saint Petersburg 2020 - Geosciences

PB - European Association of Geoscientists and Engineers, EAGE

T2 - 2020 Saint Petersburg International Conference and Exhibition - Geosciences: Converting Knowledge into Resources

Y2 - 6 April 2020 through 9 April 2020

ER -