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

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

doi:10.1190/segam2015-5902520.1

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 publication › Conference article › Academic research › peer-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 language	English
Pages (from-to)	3254-3258
Number of pages	5
Journal	SEG Technical Program Expanded Abstracts
Volume	34
DOIs	https://doi.org/10.1190/segam2015-5902520.1
Publication status	Published - 2015
Externally published	Yes
Event	SEG New Orleans Annual Meeting, SEG 2015 - New Orleans, United States Duration: 18 Oct 2011 → 23 Oct 2011

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Geophysics

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10.1190/segam2015-5902520.1

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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.",

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AU - Tisato, Nicola

AU - Chapman, Samuel

AU - Zhao, Qi

AU - Grasselli, Giovanni

AU - Quintal, Beatriz

PY - 2015

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AB - 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.

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

Abstract

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