Geochemistry, origin and accumulation of natural gases in the deepwater area of the Qiongdongnan Basin, South China Sea
Huang Baojia
Tian Hui
Li Xushen
Wang Zhenfeng
Xiao Xianming
· 2016
期刊名称：
Marine and Petroleum Geology
2016 年
72 卷
摘要：
The Qiongdongnan Basin, South China Sea has received huge thickness (>12 km) of Tertiary-Quaternary sediments in the deepwater area to which great attention has been paid due to the recent discoveries of the SS22-and the SS17-commercial gas fields in the Pliocene-Upper Miocene submarine canyon system with water depth over 1300 m. In this study, the geochemistry, origin and accumulation models of these gases were investigated. The results reveal that the gases are predominated by hydrocarbon gases (98%-99% by volume), with the ratio of C
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