东海陆坡天然气水合物成藏地质条件和BSR反射及成藏类型特征*

doi:10.11978/j.issn.1009-5470.2013.04.004

Abstract

Abstract:

This paper provides a comparative analysis of the geological conditions of the gas hydrate formation and evolution in the East China Sea. It shows occurrence evidence of cold seeps and carbon dioxide hydrate, which is based on the recall of gas hydrate survey status quo. There are many types of BSR(bottom simulating reflector) in the study area, such as the continental slope, the low uplift, deep-sea plains and so on, according to the explanation of BSR profile characteristics of conventional two-dimensional seismic and high-resolution seismic, and the explanation of signal processing and speed fine processing analysis. An estimation of natural gas hydrate resources by the measured seabed organic carbon, porosity and new edition of gas hydrate phase diagram is carried out.

Key words: East China Sea slope, geological background, gas hydrate, type features of BSR, geological conditions of accumulation

CLC Number:

P744

XU Hong, CAI Ying, SUN He-qing, YAN Gui-jing, WEI Kai, ZHAO Xin-wei, ZHU Yu-rui, SHI Jian, DONG Gang, LI Qing. The survey status and geological conditions of accumulation of gas hydrate resource in the East China Sea[J].Journal of Tropical Oceanography, 2013, 32(4): 22-29.

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The survey status and geological conditions of accumulation of gas hydrate resource in the East China Sea

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