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Relationship between Diagenesis and Hydrocarbon Accumulation in Deep Reservoir of YQ Structure, Xihu Sag
Author(s): 
Pages: 14-20
Year: Issue:  4
Journal: Offshore Oil

Keyword:  深部储层物性成岩和成藏关系花港组西湖凹陷;
Abstract: 从龙井运动对地层成岩演化的影响,探讨了东海西湖凹陷YQ构造花港组储层成岩环境酸碱性条件变化下溶蚀作用、胶结作用以及自生黏土矿物的转化.从流体势角度分析了YQ构造胶结强于溶蚀的成岩现状,从颗粒接触关系揭示了压实作用主导了花港组深层储层物性,认为龙井运动前酸性溶蚀不足造成次生孔隙较少,而石英次生加大较少造成抗压实能力较弱,龙井运动之后碱性胶结作用较强致使储层孔渗性进一步变差.
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