Seismic attenuation mechanisms in fractured fluid saturated media - Numerical and field examples

E. Caspari, N. D. Barbosa, M. Novikov, V. Lisitsa, J. Hunziker, B. Quintal, G. Rubino, K. Holliger

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

A number of different mechanisms can cause attenuation of propagating seismic waves in a fractured fluid-saturated porous medium, notably geometrical spreading, displacement of pore fluid relative to the solid frame, and transmission losses and scattering. In this study, we examine these attenuation mechanisms using numerical forward simulations and a field example. The numerical methods include a quasi-static upscaling approach and wave propagation simulations. They are based on Biot's equations of poroelasticity and, hence, fractures are modeled as soft, highly porous and permeable features. The field examples include full-waveform sonic data from the Grimsel Test Site underground laboratory situated in a granodioritic rock mass, which exhibits both brittle and ductile deformation structures at various scales.

Original languageEnglish
Title of host publication81st EAGE Conference and Exhibition 2019 Workshop Programme
PublisherEAGE Publishing BV
Pages1-5
Number of pages5
Volume2019
ISBN (Electronic)9789462822924
DOIs
Publication statusPublished - 3 Jun 2019
Event81st EAGE Conference and Exhibition 2019 Workshop Programme - London, United Kingdom
Duration: 3 Jun 20196 Jun 2019

Publication series

Name81st EAGE Conference and Exhibition 2019 Workshop Programme

Conference

Conference81st EAGE Conference and Exhibition 2019 Workshop Programme
CountryUnited Kingdom
CityLondon
Period03.06.201906.06.2019

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