计算物理 ›› 2009, Vol. 26 ›› Issue (6): 865-871.

• 论文 • 上一篇    下一篇

考虑相重新分布的双重介质分形油藏不稳定渗流压力动态特征

侯英敏, 同登科, 张华清   

  1. 中国石油大学(华东)教学与计算科学学院, 山东 东营 257061
  • 收稿日期:2008-06-02 修回日期:2009-02-18 出版日期:2009-11-25 发布日期:2009-11-25
  • 作者简介:侯英敏(1976-),女,山东东营,博士生,主要从事油气田开发理论研究,山东东营中国石油大学(华东)257061.
  • 基金资助:
    国家自然科学基金(40874044);山东省自然科学基金(Y2007F13)资助项目

Dynamic Characteristics of Nonsteady Flows with Phase Redistribution in Double Porous Media and Fractal Reservoir

HOU Yingmin, TONG Dengke, ZHANG Huaqing   

  1. College of Mathematics and Computational Science in China University of Petroleum, Dongying 257061, China
  • Received:2008-06-02 Revised:2009-02-18 Online:2009-11-25 Published:2009-11-25

摘要: 基于分形油藏渗流力学,针对存在井筒储集、表皮效应和井筒相重新分布影响下的不稳定渗流问题,建立双重介质分形油藏有效井径数学模型,并采用Douglas-Jones预估校正法求得无限大地层定产量生产条件下的非线性数值解.由数值解可知,该系统完整的压降曲线由四个流动区组成.最后分析各个分形参数、相重新分布参数和双重介质参数变化时压力的变化规律,做出典型压力曲线图版,为研究复杂渗流系统中相重新分布影响下的不稳定渗流规律提供参考.

关键词: 分形油藏, 双重介质, 井筒储集, 数值解

Abstract: A fractal theory for double porous media reservoir is introduced. An effective well radius mathematical model is used to calculate pressure of non-stesdy flow in a complex intluent system considering wellbore storage, skin factor and phase redistribution. With Douglus-Jones predictor-correcter method we obtain numerical solution of infinitely large system with constant rate production. Entire drawdown curve of the complex influent system includes 4 periods. Effects of phase redistribution parameters, double porous media parameters and fractal parameters on drawdown are shown in typical pressure curves.

Key words: fractal reservoir, double porous media, wellbore storage, numerical solution

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