摘要
针对高含水后期密井网条件下曲流河砂体,应用岩芯、测井和生产资料,采用"模式预测,分级控制"的砂体内部构型研究方法,由沉积单元、沉积微相、单一河道砂体、单一河道内部点坝砂体以及点坝内部构型5个层次分级描述,精细研究曲流河砂体内部构型,建立了点坝砂体侧积夹层的规模、产状等内部构型定量分布模式,利用国内外现代沉积和野外露头资料总结了砂体宽厚比与侧积夹层倾角的关系,确定了描述侧积夹层产状的倾向、倾角、延伸和水平间距4个参数;在此基础上采用序贯指示模拟与人机交互再处理的方法建立了小网格三维储层构型模型,提高了三维储层构型地质建模的效率。根据研究区内部构型与注采井之间的关系,采取不同的挖潜对策,有针对性地提出了3种不同开采措施挖潜曲流河砂体点坝内部剩余油,取得了较好的挖潜效果。
Considering the meander river sand bodies at late high water-cut stage which is under dense pattern,with the core,well logging and production data,the analysis hierarchy method is applies in subsurface architecture anatomy.According to this method,five architecture hierarchies including sedimentary units,sedimentary facies,single meandering belt,single point bar and lateral accretion bodies are identified and analyzed.Based on a large amount of modern deposition data and outcrop research,this paper introduces the relationship between width/thickness ratio of sand body and lateral accretion interlayer's dip angel.Lateral accretion interlayer's scale and model of river sand body are developed and the four parameters of lateral accretion interlayer including dip direction,dip angel,expanded range and horizontal range are described.Using sequential indicator simulation method and human-computer exchange method,3D reservoir architecture model are established with Direct software.The method improve the efficiency of 3D architecture stochastic modeling of reservoir.According to different relations of 3D reservoir architecture model and injection-production well patterns,three recovery measures for the remaining oil in lateral accretion shale bedding are proposed.Better measurement results are obtained.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第4期20-25,共6页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石油天然气股份有限公司科学研究与技术开发项目"特高含水期水驱厚油层描述与挖潜新技术应用基础研究"(07-02A-01-01)
关键词
曲流河砂体
内部构型
地质建模
非均质性
挖潜措施
meandering river sand body
internal architecture
geological modeling
heterogeneity
potential-tapping measures
