Title: Oil and Gas-Rich Features in the Passive Margin Deep-Water Exploration Areas Worldwide and Comparison with the South China Sea Passive Continental Margin Deep-Water
Abstract: Passive margin deepwater areas are rich in oil and gas resources,and often have great discoveries,which has become a new concern for global oil and gas exploration.Totally 33 large oil and gas fields were discovered in the global deep-water passive margin(300 m) in 2000-2007,accounting for 42% of the discovery in the world over the same period.Northern South China Sea,Southeast Asia,southern South China Sea are the passive continental margin type.In recent years new oil and gas fields are also found in the deep-water.This paper comparatively analyzes the different geological features of oil in the South China Sea deep basin with the typical passive continental margin basins.For instance the development time compared to overseas development of the South China Sea was late,and the time was short.Passive continental margin development falls into four typical stages: pre-rift stage,rift stage,the transition period and the drift stage,but the rift stage and the transition period are significantly different in China.Different evolutionary models lead to different deposition,diagenesis,thermal evolution and environment.Also great differences are found in sediment thickness.For example,foreign passive continental margin sedimentary thickness is up to ten thousand meters.The different development of specific two-layer structure resulted in the obvious difference of the gypsum rock formation and source rocks in the upper structural layer.Special favorable geological conditions revealed indicate that the South China Sea oceanic basin has experienced exceptional expansion in the history of the south compression,tension in northern and western strike-slip and east reduction.Comparative development of reef reservoir,such as the northern South China Sea reef Liuhua 11-1 oil field may also reflect great potential of the oil-gas resources.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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