The Open Petroleum Engineering Journal


ISSN: 1874-8341 ― Volume 12, 2019

An Experimental Study of Velocity-Saturation Relationships in Volcanic Rocks

The Open Petroleum Engineering Journal , 2015, 8: 142-152

Zhidi Liu, Jingzhou Zhao

School of Earth Sciences and Engineering, Xi’an Shiyou University, Xi’an, China.

Electronic publication date 31/3/2015
[DOI: 10.2174/1874834101508010142]

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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.

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