石油钻采工艺2017，Vol.39Issue(4)：393-398,6.DOI:10.13639/j.odpt.2017.04.001
基于传质扩散理论的高渗油藏窜流通道量化方法
Quantitative method of channeling-path by diffusion theory in high permeability reservoir
摘要
Abstract
As high permeability reservoir is interconnected poorly, it is usually thought that there is strong washing action when water flooding. The channeling-path generated from this action looks like spindle in plane and extreme heterogeneity in vertical. There-fore, it results in the current quantitative method and corresponding mathematical model are so complex that they are regularly solved with numerical approach, generally in which includes geological model establishment and discretization in time and space domain, rather than analytical method. Based on the new method proposed in this paper, the 3-D channeling-path physical model of channeling-path in interwell is equivalent with superposition between a horizontal model and vertical model respectively. Consequently, there is a new 3-D mathematical model which is the combination between a horizontal model with equivalent diffusion coefficient which represents horizontal spindle shape, and a vertical model with dilution coefficient which represents extreme vertical heterogeneity. Based on the above proper descending dimension simplification, the outlet water cut could be solved analytically. The proposed method has applied in channeling-path quantification of 3 wells by typical water cut curves characteristics matching. The obtained parameters, including channeling-path thickness ratio, heterogeneity coefficient and equivalent diffusion coefficient, reasonable agree with tracer interpretation results. Furthermore, the sensitivity analysis gives physical meaning of equivalent diffusion coefficient that could characterize the effect of finger advance in early term and sweep area in late term.关键词
高渗砂岩油藏/水驱/传质扩散/窜流通道/水洗变异/渗透率级差/等效扩散系数/数学模型Key words
high permeability oil reservoir/water flooding/mass diffusion/channeling-path/permeability evolution/permeability ratio/equivalent diffusion coefficient/mathematical model分类
能源科技引用本文复制引用
刘义刚,王传军,孟祥海,张云宝,李彦阅,刘同敬..基于传质扩散理论的高渗油藏窜流通道量化方法[J].石油钻采工艺,2017,39(4):393-398,6.基金项目
国家科技重大专项"渤海油田高效采油工程及配套技术集成及示范"(编号:2016ZX05058-003-018) （编号:2016ZX05058-003-018）
中海石油有限公司科研项目"渤海高含水油田在线调驱技术研究与应用"(编号:YXKY-2016-TJ-02) （编号:YXKY-2016-TJ-02）
北京市自然科学基金资助项目"基于数字岩心的数字渗流基础探索研究"(编号:2173061). （编号:2173061）
