摘要
地层由电导率不同的岩层组成，因电导率不同而划分的地层界面定义为地层电导率界面，准确判定地层电导率界面对测井资料的精细解释有很大帮助．文章以Doll几何因子为理论基础，推导出地层电导率界面附近感应测井的视电导率对地层深度导数的表达式，据此得到了该导数曲线在单一地层界面附近的变化形态和在薄层附近的变化形态，给出一种利用感应测井资料划分地层电导率界面的新方法，该方法可以准确划分单一地层界面，对薄层的划分也有很高的精确度．
The formation boundary determined by conductivities is defined as formation conductivity boundary. Correct determination of the formation conductivity boundary is important to get precise log intcrpretation. Based on the Dell geometric factor theory formulac of dcrivativc induction log apparent conductivity to formation depth near the formation conductivity boundary is derived. The changes pattern of its corresponding curvcs near the single formation bondary and the thin bed can be obtained from the formulae. A new methed for identificating forma-tion conductivity boundary is prooped. This method can bc uscd for the single formation boundary and also for thin bed.
出处
《石油大学学报（自然科学版）》
CSCD
1997年第5期21-23,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
石油天然气总公司"九五"攻关课题
关键词
感应测井
地层电导率界面
油井测量
Induction logging
Geometric factor
Derivative
Stratigraphic interface
Stratigraphic classification
