Seismic wave attenuation in rocks saturated with bubbly liquids: Experiments and numerical modeling

Nicola Tisato, Samuel Chapman, Qi Zhao, Giovanni Grasselli, Beatriz Quintal

Research output: Journal article publicationConference articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Seismic wave attenuation (1/Q) is a physical property that might be considered in seismic tomography to improve the subsurface imaging. In particular, it may help in the exploration of unconventional reservoirs as these resources are hosted in highly attenuating geo-materials. One of the factors increasing visco-elasticity of rocks (i.e. 1/Q) is the presence of fluids. Here we report experimental data showing how gas bubbles, occupying part of water-saturated pores, attenuate seismic waves. The data are explained with a gas-exsolution-dissolution theory and a 1D numerical model accounting for the diffusion of the gas in the water. The theory is then applied to an oil-methane system showing that this attenuation mechanism is relevant also for hydrocarbon reservoirs.

Original languageEnglish
Pages (from-to)3254-3258
Number of pages5
JournalSEG Technical Program Expanded Abstracts
Volume34
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventSEG New Orleans Annual Meeting, SEG 2015 - New Orleans, United States
Duration: 18 Oct 201123 Oct 2011

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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