Abstract: Considering the influence of conductivity and displacement current at the meantime, we derive a new functional formulation of A-Φ and develop a 3D Finite Element code to simulate electromagnetic well logging responses in full 3D and a wide frequency range. We compute the field distribution of a horizontal and a vertical magnetic field coil. We also give the response of induction well logging in deviated wells. Finally we analyze the influence of coil radius and anisotropy.

Key words: FEM, Electromagnetic logging, Anisotropy

摘要： 同时考虑电导率和位移电流的影响,导出了基于A-Φ的一个新泛函表达式,并开发了能在宽频段内模拟电磁测井响应的三维有限元程序。计算了水平磁偶线圈和垂直磁偶线圈的场分布,也给出了倾斜井中感应测井的响应,最后分析了线圈半径和各向异性的影响。

关键词: 有限元, 电磁测井, 各向异性