【摘要】 在松辽盆地北部葡萄花油层整体开展高精度层序地层学研究,对岩心露头观察描述的基础上,分析层序界面、湖泛面的识别特征,总结各关键界面的测井、地震、矿物学和地球化学特征,同时将具有年代地层意义的标准生物化石,应用于高精度层序地层学研究,建立松辽盆地北部姚家组一段(包括葡萄花油层和其上覆萨葡夹层)统一的等时地层格架。姚一段地层分属3个层序,每一层序发育低位、水进和高位3个体系域,揭示了储层的分布模式,即3个低位体系域和水进体系域早期是储层主要发育区,解决了以往利用测井资料进行单纯旋回对比的多种划分方案之间的争议,搞清了该划分模式与大庆油田开发系统传统油层组划分之间的对应关系,实现了信息的综合应用,对于该层位下一步勘探、开发工作具有现实意义。更多还原

【Abstract】 Integrated study of high-resolution sequence stratigraphy for Putaohua reservoir in northern Songliao Basin is carried out for the first time. Based on observation and description of cores and outcrop, identification features of sequence boundary and lake flooding surface have been analyzed. The characteristics of well logging, seismic, mineralogy and geochemistry for each key boundary are summarized. At the same time, standard fossil organism with chronographic significance is applied to the high-resolution sequence stratigraphy, by which a uniform isochronous formation framework for the first member of Yaojia Formation in northern Songliao Basin is established (including Putaohua reservoir and overlying Sa-Pu interlayer). The first member of Yaojia Formation is divided into three sequences, where three system tracts of lowstand, transgression and highstand develop. It indicates the distribution model of reservoir, namely the three lowstand system tracts and early transgression system tract are the main development area of reservoir. So the disputes about several subdivision programs of purely cyclic correlation with well logging can be solved, the relationship between this subdivision model and traditional classification of oil layer sets by Daqing Oilfield Development System can be made clear, and the comprehensive application of information can be realized, which is of practical or immediate significance for the next exploration and development of Putaohua reservoir.更多还原