高邮凹陷北斜坡中东部地区阜三段沉积相特征及油气分布关系  

Sedimentary Facies of the third section of Funing Formation and Hydrocarbon Distribution in the Northeast of North Slope in Gaoyou Depression

作　　者：王玮[1] 

机构地区：[1]中国石油大学(华东),山东东营257061

出　　处：《内蒙古石油化工》2009年第17期130-132,共3页Inner Mongolia Petrochemical Industry

摘　　要：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 basis of the observation and analysis of cores, thin section of coring wells, and a lot of logging data, sedimentary features and facies in a single well, in section and in plane are studied. The analysis of facies show that the sand bodies of the third section of Funing formation in the northeast of North Slope in Gaoyou Depression belong to a delta deposits including delta front and pro- delta subfacies. The delta front is furthmore divided into subaqueous distributary channel, mouth bar, the distal bar, sheet sand and delta--frontal facies. The sedimentary microfacies study reveals its effect on the reservoir quality, and the relationship between oil distribution and the different kinds of sedimentary microfacies. The results show that subaqueous distributary channel and mouth bar are the main accumulation facies, having best reservoir quality and highest production, and the frontal sheet sand and far bar sand are relatively poor, and delta--front sand is the poorest having no oil production.

关 键 词：高邮凹陷 阜三段 沉积相 油气分布 

分 类 号：P618.13[天文地球—矿床学] P618.130.2[天文地球—地质学]