双侧向测井仪带通滤波中心频率偏移对测井曲线影响探讨  

Effects of center Frequency Migration of Bandpass filter on Dual Laterolog Logs

作　　者：王天波[1] 史峰[1] 张旭桥[1] 杜肖琳[1] 刘亚力[1] 姚京坤[1] 

机构地区：[1]河南石油勘探局测井公司,河南南阳473132

出　　处：《河南石油》2001年第1期28-30,共3页Henan Petroleum

摘　　要：双侧向测井仪电子线路中的带通滤波器中心频率偏移直接影响地层电阻率测量值准确性，文章从理论上导出了带通滤波器的三个特性参数：中心频率、中心频率处增益、品质因素的通用表达式。计算了三个特性参数的理论数值并分析研究了带通滤波器频率偏移对测井曲线影响．Center frequency migration of bandpass filter in dual laterolog logging tool directly influences the accuracy of formation resistivity measurement. This paper derives the universal formulas for three characteristic parameters, center frequency, gain of center frequency and quality factor of bandpass filter, calculates the theoretical values of the three characteristic parameters; analyzes the effects of center frequency migration of bandpass filter on logs.

关 键 词：侧向测井仪 带通滤波器 中心频率 偏移 测井曲线 

分 类 号：P631.83[天文地球—地质矿产勘探]