塔河一区下油组辫状河三角洲储层构型分析

发布时间：2018-02-26 19:16

本文关键词： 辫状河三角洲储层构型层次分析心滩定量表征塔河一区　出处：《油气地质与采收率》2017年05期 　论文类型：期刊论文

【摘要】：辫状河三角洲储层是当今油气勘探的重点对象,其内部的储层构型特征直接控制油气的富集与分布。以塔河一区下油组为例,采取现代沉积测量与经验公式预测相结合的方法,总结出一套适用于辫状河三角洲储层构型的研究方法。在沉积相分析的基础上,加以岩心、测井、地震、录井等资料的综合分析,识别出辫状河三角洲不同层次的储层构型界面以及由其划分的构型要素。以层次分析为指导思想,通过隔夹层识别,从单一河道、心滩和心滩内部增生体3个层次对研究区储层进行详细解剖并实现相应的定量表征。结果表明,研究区下油组辫状河三角洲平原单一辫状分流河道宽度为128~690 m,水下分流河道宽度为144~386 m,心滩宽度约为244 m,长度约为594m,心滩内夹层发育,长轴方向迎水面倾角为2°~4°,背水面倾角小于1°。
[Abstract]:Braided river delta reservoir is the key object of oil and gas exploration at present, and its internal reservoir configuration features directly control the accumulation and distribution of oil and gas. Taking the lower oil formation of Tahe No. 1 area as an example, the method of combining modern sedimentary survey with empirical formula prediction is adopted. A set of research methods suitable for braided river delta reservoir configuration are summarized. On the basis of sedimentary facies analysis, the core, logging, seismic and logging data are comprehensively analyzed. The reservoir configuration interface of different layers of braided river delta and the structural elements divided by it are identified. With AHP as the guiding ideology, through the identification of intercalation, a single channel is identified. The reservoir in the study area was dissected in detail at three levels of accretive bodies in Xintan and Xintan, and the corresponding quantitative characterization was realized. In the study area, the width of braided river delta plain single braided distributary channel, underwater distributary channel, Xintan channel and Xintan delta plain are 128 ~ 690 m, 144 ~ 4 ~ 386 m, 244 m and 594 m, respectively. The inclination angle of the long axis towards the water surface is 2 掳4 掳, and the back surface inclination angle is less than 1 掳.
【作者单位】：长江大学油气资源与勘探技术教育部重点实验室;长江大学地球科学学院;中国石化西北油田分公司;
【分类号】：P618.13

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