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根据大量岩心分析资料、薄片鉴定资料及大量测井与录井资料为基础,对沉积特征进行了分析,并在此基础上,进行了单井相,剖面相和平面相分析,认为高邮凹陷北斜坡中东部地区阜三段主要为三角洲沉积体,主要发育有三角洲前缘和前三角洲两大亚相类型,并进一步划分为水下分流河道、河口坝、远砂坝、席状砂、三角洲外前缘和前三角洲泥等6种微相类型。通过对沉积微相研究,揭示了不同沉积微相对储集岩物性具有重要控制作用,确定了沉积微相与油水分布的关系。结果表明,水下分流河道和河口坝泥质含量相对低,孔隙度较高,储集物性最好且平均日产油量最高,是油气的主要储集相带;远砂坝和席状砂较差,而三角洲外前缘几乎无产油能力。
Based on a large number of core analysis data, sheet identification data and a large number of well logging and logging data, the sedimentary characteristics were analyzed. Based on this analysis, single well facies, section facies and planar facies analysis were carried out. The northern slope of Gaoyou Sag The Fu-3 Member in the central-eastern region is mainly a deltaic sedimentary body with two major subfacies of delta front and the former delta, and is further divided into underwater distributary channels, estuarine dam, distal sand bar, sheet sand, outer front of the delta Margin and the former Delta mud 6 kinds of microfacies types. Through the study of sedimentary microfacies, it reveals that different sedimentary microfacies have important control over the physical properties of the reservoir rocks, and the relationship between the sedimentary microfacies and oil-water distribution has been confirmed. The results show that the shale content of the underwater distributary channel and estuary dam is relatively low, the porosity is high, the reservoir property is the best, and the average daily oil production is the highest. Poor, while the outer edge of the delta almost no oil production capacity.