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Sequence stratigraphic characteristics of subtle oil-gas pool in the Palaeogene of Bohai Sea area
Author(s): 
Pages: 11-15
Year: Issue:  2
Journal: ACTA PETROLEI SINICA

Keyword:  渤海海域古近系隐蔽油气藏成藏要素层序地层学;
Abstract: 运用适合于陆相地层分析的高分辨率层序地层学理论分析了渤海海域古近系层序地层学特征.在渤海古近系可划分出4个长期基准面旋回和11个中期基准面旋回.渤海海域古近系隐蔽油气藏成藏要素与层序地层格架有着密切的关系,长期基准面旋回上升至下降的转换位置是优质烃源岩发育的位置,中期基准面旋回的上升半旋回早期和下降半旋回的晚期是砂体发育的位置,中期层序界面与层序界面附近的砂体是油气运移的良好通道,与长期活动的断层一起构成了渤海复杂的油气运移输导体系.渤海海域古近系有6种隐蔽油气藏类型,不同类型的隐蔽油气藏在层序中出现的位置可以预测的.以JZA气藏为例,简要分析了层序地层学在隐蔽油气藏勘探中的应用.
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