新疆石油地质 ›› 2003, Vol. 24 ›› Issue (3): 240-241+178.

• 油藏工程 • 上一篇    下一篇

用分形方法研究水驱前后岩石的孔隙结构

马新仿, 张士诚, 郎兆新   

  1. 石油大学 石油天然气工程学院,北京 102249
  • 收稿日期:2002-06-13 发布日期:2020-09-21
  • 作者简介:马新仿(1972-),男,湖北天门人,在读博士研究生,渗流力学和油藏数值模拟。联系电话:010-89734593
  • 基金资助:
    国家“973项目”大幅度提高石油采收率的基础研究 (G1999022509)

Application of Fractal Method in Studying Variation of Pore Structure in Reservoir Rock before and after Waterflooding

MA Xin-fang, ZHANG Shi-cheng, LANG Zhao-xin   

  • Received:2002-06-13 Published:2020-09-21
  • About author:MA Xin-fang (1972-), Male, Doctor Candidate, Fluid Mechanics and Reservoir Numerical Simulation. Oil/ Gas Engineering College, University of Petroleum, Beijing 102249, China

摘要: 储集层岩石的孔隙空间具有良好的分形特征,孔隙结构的分形维数可以定量描述孔隙结构的复杂程度。应用分形几何的原理,建立了孔隙分布和毛管压力曲线的分形几何模型,得出了统计参数和分形几何参数之间的相互关系。并根据水驱前后的毛管压力曲线资料计算了水驱前后孔隙结构的分形参数,研究了水驱对孔隙结构变化的影响。计算结果表明,储集层岩石经过水驱后,孔隙结构的复杂程度增加,非均质性增强。

关键词: 岩石, 孔隙结构, 分形维数, 水驱, 毛管压力

Abstract: There is fractal property in pore space of reservoir rocks. The fractal dimension can be used to describe quantitatively the complexity of pore structures. According to principle of the fractal geometry, the fractal model for pore size distribution and capillary pressure curve is developed, and a correlation between the statistics and fractal parameters is derived. The fractal parameters of pore structure are estimated based on the capillary pressure data before and after waterflooding to investigate the effect of waterflooding on variation of pore structure. The results show that the pore structure becomes more complex and more heterogeneous after waterflooding.

Key words: rock, pore structure, fractal dimension, waterflooding, capillary pressure

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