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通过岩心观察和测井曲线分析,结合研究区长6油层组的岩性、结构、构造特征、测井资料来研究长6油层组的沉积相,以三角洲前缘亚相沉积为主,其沉积相可进一步划分为:水下分流河道、河口坝、水下天然堤、分流见湾等4种类型。油气的聚集受沉积微相的控制,研究区长6油层组油气聚集的有利场所是水下分流河道及河口坝。
Based on the analysis of core observation and well logging, the sedimentary facies of Chang 6 reservoir is studied based on the lithology, structure, structural characteristics and logging data of Chang 6 reservoir in the study area. The sedimentary facies of delta 6 is mainly delta front sediments, Phase can be further divided into: underwater distributary channel, estuarine dam, underwater natural dike, diversion, see Bay and other four types. The accumulation of oil and gas is controlled by sedimentary microfacies. The favorable sites for hydrocarbon accumulation in the Chang 6 oil layer of the study area are underwater distributary channels and estuarine dam.