山东大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 99-106.doi: 10.6040/j.issn.1672-3961.0.2014.259
• 其他 • 上一篇
高杨, 孔凡敏, 李康
GAO Yang, KONG Fanmin, LI Kang
摘要： 利用解析法计算随钻方位电阻率仪器激发的电磁场随仪器方位变化的规律,研究其在地层界面预测中的应用。通过分析电磁波在各层介质中的反射和透射规律,得出了介质层中电磁波的解析表达式,计算了电磁波电阻率随钻测量的幅度衰减和相移,分析了定向电磁测量对地层界面的灵敏性,研究了地层相对倾角和接收天线倾角对电磁测量的影响。研究表明,线圈距和目的层厚度越大,定向电磁测量的探测范围越大;随着地层相对倾角和接收天线倾角的增加,定向幅度衰减在接近地层界面时的变化越明显,对地层界面的灵敏性增强。结合方位电阻率成像和定向电磁响应说明,在常规随钻电阻率仪器的基础上,增加倾斜接收天线,可以实现地层倾向的预测和判断。
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