【摘 要】
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A number of beach-bar sandstone reservoir beds are developed in the upper fourth member of Eocene Shahejie Formation on the southern slope of the Dongying S
【机 构】
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School of Geoscience,China University of Petroleum,Beijing 102249,China
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A number of beach-bar sandstone reservoir beds are developed in the upper fourth member of Eocene Shahejie Formation on the southern slope of the Dongying Sag.Aiming to further recognize the hydrocarbon accumulation characteristics of beach-bar sandstone,which is useful for the progressing exploration of the oilfield,based on the analysis of seismic and logging data,with characterization and petrographic studies of core and cutting samples,this paper analyzes the hydrocarbon accumulation characteristics in two typical blocks of Boxing oilfield and Wangjiagang oilfield,especially reservoir bed heterogeneity and migration conditions that influence oil and gas distribution,calculates the index of reservoir bed quality (IRQ) with a mathematical method,and discusses the relationship between driving force and resistance of hydrocarbon accumulation.
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