COMBINED DETECTION TECHNIQUE FOF ULTRASONIC AND TIME DOMAIN REFLECTOMETRY IN GAS HYDRATE

YE Yu-guang; ZHANG Jian; HU Gao-wei; DIAO Shao-bo; LIU Chang-ling

2008 Vol. 28, No. 5

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YE Yu-guang, ZHANG Jian, HU Gao-wei, DIAO Shao-bo, LIU Chang-ling. COMBINED DETECTION TECHNIQUE FOF ULTRASONIC AND TIME DOMAIN REFLECTOMETRY IN GAS HYDRATE[J]. Marine Geology & Quaternary Geology, 2008, 28(5): 101-107.

Citation:

YE Yu-guang, ZHANG Jian, HU Gao-wei, DIAO Shao-bo, LIU Chang-ling. COMBINED DETECTION TECHNIQUE FOF ULTRASONIC AND TIME DOMAIN REFLECTOMETRY IN GAS HYDRATE[J]. Marine Geology & Quaternary Geology, 2008, 28(5): 101-107.

COMBINED DETECTION TECHNIQUE FOF ULTRASONIC AND TIME DOMAIN REFLECTOMETRY IN GAS HYDRATE

1 College of Marine Geoscience, Ocean University of China, Qingdao 266100, China;
2 Qingdao Institute of Marine Geology, Qingdao 266071, China;
3 Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Received Date: 28 July 2008

Revised Date: 12 September 2008

Abstract

Abstract

An experimental apparatus combining ultrasonic wave detection with Time Domain Reflectome-try (TDR) was developed for the first time,and the apparatus can determine gas hydrate saturation as well as acoustic characteristics simultaneously in experimental sediments. The formation and dissociation of gas hydrate can be detected by ultrasonic,TDR and anomalies of temperature and pressure,which gave a con-sistent result in 58 experimental runs. Experimental result reveals that, the apparatus we developed can determine gas hydrate saturation and elastic velocities efficiently. The work is helpful to understand physi-cal properties of gas hydrate-bearing sediments, and it can provide fundamental parameters for the geophysical exploration and resource evaluation of marine gas hydrate.
- marine gas hydrate /
- ultrasonic /
- TDR /
- saturation /
- acoustic characteristics