Application of AVO analysis to gas hydrates identification in the northern slope of the South China Sea

• Autorzy: Yang R. , Yan P. , Wu N. , Sha Z. , Liang J.
• Języki publikacji: EN

Abstrakty

EN

Amplitude versus offset (AVO) analysis is a conventional seismic exploration technique in geophysical and lithological interpretation and has been widely used in onshore and offshore exploration. Its use in marine gas hydrate research, however, is still in initial stages. In this study, AVO analysis is applied to seismic profiles at drilling sites where hydrate samples have been recovered. The AVO responses of free gas, bottom simulating reflector (BSRs), and gas hydrates are discussed, and the AVO attributes in relation to gas hydrates are summarized. The results show that changes in intercept, gradient, fluid factor and Poisson’s ratio clearly reflect: (i) location of free gas and the BSR, and (ii) spatial relations between blank zone, BSR, gas hydrate, and free gas.

Słowa kluczowe

EN

South China Sea; gas hydrates; AVO analysis; free gas; BSRs

PL

Morze Południowochińskie; gazohydraty; analiza AVO; gaz swobodny; BSRs

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2014
• Tom: Vol. 62, no. 4
• Strony: 802--817
• Opis fizyczny: Bibliogr. 32 poz.

Twórcy

autor

Yang R.

• Key Laboratory of Marginal Sea Geology of Chinese Academy of Sciences, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China

autor

Yan P.

• 1Key Laboratory of Marginal Sea Geology of Chinese Academy of Sciences, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China

autor

Wu N.

• Guangzhou Center for Gas Hydrate Research, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China;

autor

Sha Z.

• Guangzhou Marine Geological Survey, Guangzhou, China

autor

Liang J.

• Guangzhou Marine Geological Survey, Guangzhou, China

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