石油学报 ›› 1994, Vol. 15 ›› Issue (4): 66-72.DOI: 10.7623/syxb199404009

• 油田开发 • 上一篇    下一篇

含水饱和度指数n的理论及实验

孙德明1, 褚人杰2   

  1. 1. 中科院地球物理研究所;
    2. 石油勘探开发科学研究院
  • 收稿日期:1992-10-20 修回日期:1994-12-17 出版日期:1994-12-25 发布日期:2013-07-08
  • 作者简介:孙德明,1962年I1月生.1982年毕业于华东石油学院.现为中国科学院地球物理所博士后.通讯处:北京市海淀区邮政编码:100083

A THEORETICAL AND EXPERIMENTAL STUDY FOR SATURATION EXPONENT, n

Sun Deming1, Chu Renjie2   

  1. 1. Institute of Ge0physics, Chinese Academy of Sciences;
    2. Scientific Research Institute of Petroleum Exploration and Development, Beijing
  • Received:1992-10-20 Revised:1994-12-17 Online:1994-12-25 Published:2013-07-08

摘要: 含水饱和度指数n是用电阻率评价地层流体性质的重要参数.本文通过理论推导,得出了影响n指数的几大因素,分别为地层水电阻率Rw、阳离子交换容量Qv、含水饱和度Sw以及地层因素F.并发现砂岩影响n的因素是F和Rw,而泥质砂岩则分别是Rw,QvF.以上某些结论已在实验中得到验证.

关键词: 含水饱和度, 指数, 地层, 水电阻率, [阳离子交换容量]

Abstract: This paper has given a formula to calculate saturation exponent "n".A few of effectsfactors(Rw,Ow,Sw,F)on "n"is deduced from the formula.The main effects are F(toutu-osity)and Rw(formation water resistivity)for clean sand and Rw,Qw(cation exchange capacity) and F for shaly sand Some results have been verified from a laboratory study.

Key words: water saturation exponent, stratum, water resistrmty, [canon exchange capability]