石油学报 ›› 1999, Vol. 20 ›› Issue (4): 46-50.DOI: 10.7623/syxb199904009

• 油田开发 • 上一篇    下一篇

磁化水在多孔介质中渗流的计算机模拟

卢贵武   

  1. 华东石油大学
  • 收稿日期:1997-10-08 修回日期:1998-04-23 出版日期:1999-07-25 发布日期:2010-05-21
  • 作者简介:卢贵武,男,1964年4月生.1989年毕业于北京师范大学物理系.现任石油大学(华东)应用物理系讲师.通讯处:山东省东营市.邮政编码:257062.

MONTE-CARLO COMPUTER SIMULATION ON PENETRATION OF MAGNETIC WATER IN POROUS ROCK

Lu Guiwu   

  1. Petroleum University, Huadong
  • Received:1997-10-08 Revised:1998-04-23 Online:1999-07-25 Published:2010-05-21

摘要: 建立了磁化水分子间的相互作用位势模型,用蒙特卡罗计算机模拟方法,通过计算外加磁场对水的内能的影响,从分子水平定量研究了磁处理前后水的粘度及表面张力的变化,讨论了磁化水在多孔介质中的渗流速度和磁增注效应.研究表明,水的磁效应与磁感应强度的关系是多极值函数关系;在优选的最佳磁场强度范围,磁化水内能的绝对值减小,磁化水的粘度及表面张力显着降低,磁处理具有显着的降粘效应和增注效应.计算机模拟也表明磁处理水径向分布函数的第二伴峰明显升高,即磁场处理能引起水系统微观结构的改变.计算结果与实验结果基本一致.

关键词: 磁化水, 多孔介质, 渗流, 计算机模拟

Abstract: Basing on interaction potential model built in this paper, effect of viscosity reduction and peretration growth of magnetic water are investigated for first time by calculating internal energy, viscosity and interfacial tension of magnetic water using MC computer simulation.It is found that (1) the relations between magnetic effect and magnetic flux density is many-peaks function; (2) under the influence of an optimum magnetic field, the absolute value of internal energy, viscosity and interfacial tension of magnetic water decreased significantly; (3) the penetration and the injectivity of magnetic water in porous rock can be increased by magnetic treatment when magnetic flux density B=0.1T or B=0.2T; (4) the second peak of water-water RDF rises when water is exposed to an external magnetic field; (5) the calculation is in agreement with experimental results.

Key words: magnetic water, porous rock, penetration, computer simulation