东濮凹陷西斜坡油藏地球化学特征与油气源对比

Journal of Oil and Gas Technology(2005)

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Abstract
东濮凹陷西斜坡原油分为Ⅰ类轻质稀油、Ⅱ类中质稀油和Ⅲ类中质稠油三种类型。Ⅰ类轻质稀油具有较高的成熟度,主要来自近洼柳屯、海通集洼陷沙三3,4亚段高成熟烃源岩;胡庆主体油田的Ⅱ类中质稀油一方面来自柳屯、海通集洼陷,另一方面是本身源岩自生自储所致;胡19块、马寨油田Ⅲ类中质稠油来自马寨洼陷低熟烃源岩,柳屯洼陷高熟烃源岩生成的油气对胡19块贡献不大。西斜坡油气以近距离、短距离运移为主,因此明确了下步勘探和挖潜的主要方向在生油气洼陷的周边、主断裂带两侧和构造的二台阶。
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Key words
geochemistry of reservoir,correlation of sources,west slope,Dongpu Depression
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