阵列感应测井仪器两种组合线圈的对比与应用
Well Logging Technology（2014）
Abstract
阵列感应测井仪器以三线圈系模式为基础,以同轴且平行线圈的互感系数理论为依据,推导出双线并绕组合线圈直耦电动势的理论公式,结合线圈参数计算出直耦电动势大小.通过对双线并绕的两种不同绕制方式的组合线圈进行分析、对比以及现场试验,证明了绕线间隔更大的组合线圈可以很好地降低直耦电动势,大大减小了电导率曲线随不同温度变化的影响,对提高仪器的稳定性和小信号处理能力具有重要意义.
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Key words
multiple array induction logging tool,mutual inductance coefficient,bifilar winding,straight coupling EMF,conductivity
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