摘要
电介质理论分析和实验研究证明，岩石电阻率存在频散现象，主要是由于岩石松驰极化所致。在实际测井中，纯岩石及盐水溶液电阻率的频散可以忽略不计。随着岩石泥质含量、含油气饱和度的增高和饱印溶液浓度的降低，频散现象明显增强；随着测量频率的增高。所测岩石电阻率逐渐降低。在实际测井中，不同电阻率测井方法因使用频率不同，在泥质地层中的测量结果将存在差别。
The results of the dielectric theoreti cal analysis and experiment show that theresistivity of rock has the effects of the dispersion, which is caused mainly by the rock'srelaxation polarization。The dispersio of resistivities of the clean rock and salt solution canbe ignoted in well logging. The effect of dispersion will rise obviously with the increase ofshale content, and the decrease of solution sali nity and water saturation.The resisti vity ofrock willbe reduced with the frequency increment,The measuremental results should bevaried with the frequency of resistivity logging in shaly formations?
出处
《石油大学学报（自然科学版）》
CSCD
1994年第1期17-23,共7页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
岩石
电阻率
频散现象
测井解释
ock:Resistivity:Dispersion:Log interpretation:Core analysis
