低渗透油层单砂体建筑结构研究及剩余油挖潜

A Study on Internal Architecture of Single Sand Body in Low Permeability Oil Layer and Remaining Oil Tapping

借助区域地质背景和岩心资料对研究区的沉积体系、沉积微相进行精细的研究,总结了研究区点坝和废弃河道的识别方法;通过现代沉积理论模型,根据夹层建筑结构的参数提取方法,利用已有资料,对研究区FⅠ71时间单元点坝参数进行提取;以单砂体内部三维非均质性为指导思想,结合点坝内部侧积体垂向和平面上的切叠模式,建立了三维储层模型,为更好地挖潜剩余油和更好地开采点坝砂体提供了新的理论指导。

Using the regional geological setting and core to study deposition system-fine sedimentary facies of region, identification methods of point bars and abandoned channel of the region were summarized. According to present deposition theoretical model and the parameters extraction method of the sandwich building structure, F 1 71 time unit point bar parameters of the region were extracted taking advantage of existing materials. Using ideas of the three-dimensional heterogeneity within a single sand body and one side of the meandering point bar deposition model , the three-dimensional reservoir model was established. The study provides a new theoretical guidance for better tapping remaining oil and for producing point bar sand.