Study on Recognizing Technology of Gas Hydrates Zone

Abstract

Abstract:

It is very difficult to distinguish gas hydrate zones from the normal profiles of stack or migration during interpretation of natural gas hydrates based on the seismic data,whereas the abnormal geophysical characteristic of gas hydrate zones can be shown preferably in the profiles of wavelet,inversions of velocity,model of velocity,fluid factor,inversions of wave impedance,instantaneous amplitude,apparent polarity and halftime energy.Some recognition technology of gas hydrate zones are collected from domestic and overseas,whilst some new ideas including the recognition of gas hydrate zones using the information of wavelet,velocity and other attributes,which can be applicable in the areas with no well,are put forward in this paper.The ideas and the methods mentioned in this paper might provide some valuable reference for the resource assessment of gas hydrates.

Key words: gas hydrate, gas hydrates zone, recognizing technology

CLC Number:

P744

SHA Zhi-bin，WANG Hong-bin，YANG Mu-zhuang，LIANG Jin-qiang，ZHANG Guang-xue，. Study on Recognizing Technology of Gas Hydrates Zone[J]. Geoscience, 2008, 22(3): 438-446.

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