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Characteristics of Lower Cretaceous petroleum system in Chagan sag and exploration direction
Author(s): 
Pages: 366-369
Year: Issue:  3
Journal: OIL & GAS GEOLOGY

Keyword:  含油气系统关键时刻下白垩统查干凹陷;
Abstract: 查干凹陷下白垩统含油气系统以巴音戈壁组二段为主力烃源岩、巴音戈壁组二段和苏红图组一段为主要储集层,构成自生自储和下生上储两套成藏组合.盆地热模拟结果表明,白垩纪末期烃源岩达到成熟阶段,为生、排烃高峰期,白垩纪末的燕山运动(65Ma)为系统的关键时刻.根据油气系统的平面、剖面分布,结合油气运移方向和圈闭条件分析,认为毛敦侵入带和巴润断鼻带为下步勘探的有利部位.
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