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柴北缘马西地区油气地质特征与成藏研究

Fault-Block Oil & Gas Field(2009)

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Abstract
马海油气田的勘探取得突破对于青海油田的石油地质勘探具有重要意义。马西地区位于马海构造西部,为燕山晚期发育的古隆起,储层为河流相沉积的碎屑岩,较为发育。该区是以周边凹陷的侏罗系为烃源岩的含油气区,古凸起为油气运移聚集的长期指向区,油源对比发现其大部分来自于北带鱼卡凹陷的J2含油气系统,少部分来自于南带伊北凹陷的J1含油气系统,并且圈闭的形成、定型时期与其生烃高峰期具有良好的匹配关系。因此,盖层的发育程度对于工区油气藏的规模至关重要。
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Key words
palaeohigh,northern margin of Qaidam Basin.,Maxi Area,characteristics of hydrocarbon accumulation,oil source contrast
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