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Journal of Geological Research
Volume 2013 (2013), Article ID 176579, 8 pages
http://dx.doi.org/10.1155/2013/176579
Research Article

Study on p-Wave Attenuation in Hydrate-Bearing Sediments Based on BISQ Model

1School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing 100083, China
2China National Oil and Gas Exploration and Development Corporation, Beijing 100034, China

Received 25 July 2013; Revised 27 August 2013; Accepted 27 August 2013

Academic Editor: Umberta Tinivella

Copyright © 2013 Chuanhui Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In hydrate-bearing sediments, the elastic wave attenuation characteristics depend on the elastic properties of the sediments themselves on the one hand, and on the other hand, they also depend on the hydrate occurrence state and hydrate saturation. Since the hydrate-bearing sediments always have high porosity, so they show significant porous medium characteristics. Based on the BISQ porous medium model which is the most widely used model to study the attenuation characteristics in the porous media, we focused on p-wave attenuation in hydrate-bearing sediments in Shenhu Area, South China Sea, especially in specific seismic frequency range, which lays a foundation for the identification of gas hydrates by using seismic wave attenuation in Shenhu Area, South China Sea. Our results depict that seismic wave attenuation is an effective attribute to identify gas hydrates.