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点坝是曲流河单砂体沉积单元中最重要的储集砂体,其内部侧积层是控制剩余油分布的主要因素。以港东油田二区五先导试验块为例,综合运用测井、岩心、密井网、水平井等资料,对点坝内部构型进行解剖,定量认识试验区侧积层厚度为0.2~0.3 m、倾角3.5°,侧积体规模、期次、大小不一。分级次嵌套式二次加密建立构型级别精细三维地质模型,并开展了精细油藏数值模拟研究,同时结合测井、岩心、分析化验等资料,认为剩余油主要分布在砂体顶部和侧积层附近。应用地质-建模-数模一体化研究成果,指导方案部署与现场实施,取得了较好效果,为点坝内部构型精细研究提供了一套新的思路与方法。
The point dam is the most important reservoir sandstone in the single sand body of the meandering river. The internal side strata is the main factor controlling the remaining oil distribution. Taking the five pilot test blocks in Block 2 of Hong Kong East Oilfield as an example, the internal configuration of point dams was anatomized comprehensively by well logging, core, tight well and horizontal wells. m, angle of 3.5 °, the side of the body size, duration, size. Level three-dimensional geological model of configuration level was established by hierarchical sub-nesting second-order encryption, and the numerical simulation of fine reservoirs was carried out. At the same time, with the data of well logging, core analysis and laboratory analysis, the remaining oil was mainly distributed on the top and the side Near the laminate. The application of geology - modeling - numerical integration research results, guidance program deployment and on - site implementation, and achieved good results, providing a new set of ideas and methods for the fine study of the internal configuration of point dam.