| 东海西湖凹陷始新统沉积环境及含油气性 |
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| 作者姓名： | 周平 |
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| 作者单位： | 上海海洋地质调查局 |
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| 摘 要： | 东海西湖凹陷始新统平湖组为半封闭海湾沉积环境,海水由南往北侵入,平湖组下段为海湾浅水—滨岸—滨岸冲积平原相沉积;平湖组中段为潮坪—三角洲相沉积;平湖组上段为三角洲相沉积。业已证明,始新统平湖组不但具有极好的生油气条件,而且发育良好的储集层。油气分布除了受构造因素控制外,与沉积相有极为密切的关系。
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| 关 键 词： | 东海 沉积相 石油 天然气 |
EOCENE SEDIMENTARY ENVIRONMENT AND OIL AND GAS BEARING FEATURES OF XIHU SAG IN THE SHELF BASIN OF THE EAST CHINA SEA |
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| Authors: | Zhou Ping |
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| Institution: | Shanghai Bureau of Marine Geological Survey |
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| Abstract: | Pinghu formation of Eocene in Xihu sag of the shelf basin of the East China Sea is semi-closed bay sedimentary environment. Marine transgression is from south to north. The early-middle Eocene is a transgression process, while the middle-late Eocene is a regression process. Lower member of Pinghu formation is of bay-shore-delta sedimentary model; The paper has discussed the distribution and burial etc. hydrogeological conditions of deep fresh-:water aquifers in Shanghai and neighbouring areas and also the prospects of reasonable developing each aquifer as well. |
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| Keywords: | East China Sea Eocene Sedimentary Facies Oil and Gas |
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