An Experimental Study of Velocity-Saturation Relationships in Volcanic Rocks
Zhidi Liu*, Jingzhou Zhao
Identifiers and Pagination:Year: 2015
First Page: 142
Last Page: 152
Publisher Id: TOPEJ-8-142
Article History:Received Date: 1/9/2014
Revision Received Date: 28/12/2014
Acceptance Date: 30/12/2014
Electronic publication date: 31/3/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
In this paper, experiments are carried out under different pressures and water saturations using core samples of volcanic rocks from the Junggar Basin in China to understand how water saturation affects P- and S-wave velocities. The results show that water saturated rocks exhibit significantly higher P- and S-wave velocities than gas saturated rocks. In addition, the P- and S-wave velocity ratio declines with increasing water saturation. Furthermore, a P- and S-wave velocity ratio vs. resistivity cross plot is created to identify gas reservoirs in the volcanic rocks in the Junggar Basin.