由于油井中的钢套管与大地连续接触,因此与那些和大地断续接触的铁丝网、供电线以及管道等相比,它更容易成为地面电法测量的人为异常源。针对这种具有复数面阻抗的垂直导电管问题,我们分别按傅立叶变换法和积分方程法进行了模拟。模拟的结果表明,当套管到测线的距离小于偶极子到测 Because the steel casing in the well is in continuous contact with the ground, it is more likely to become a source of human-induced anomalies in terrestrial electrical measurements than those with intermittent contact with the earth, such as barbed wires, power lines, and ducts. For this kind of vertical conducting tube with complex surface impedance, we simulate it by Fourier transform and integral equation respectively. The simulation results show that when the distance from the casing to the survey line is less than the dipole to the measurement