偶极电测深在国外的石油勘察、地热开发及深部构造的电阻率研究中,一直得到广泛的应用。偶极装置所需的供电和测量电线较短,适合于作“大深度”观测。另外,供电和测量线路分离,感应偶合现象最小。电极方向可任意敷设,机动灵活。因此在实际工作中与通常的对称四极测深相比,具有一定的优点。但偶极测深装置对电阻率横向变化比较敏感,因此观测结果常常由于曲线遭受畸变 Dipole electrical sounding has been widely used in petroleum prospecting, geothermal development and resistivity studies in deep structures abroad. The dipoles require short supply and measurement wires and are suitable for “deep” observations. In addition, the power supply and measurement lines are separated and inductive coupling is minimized. Electrode direction can be laid freely, flexible. Therefore, compared with the usual symmetrical quadrupole sounding in practical work, it has certain advantages. However, dipole sounding devices are sensitive to lateral changes in resistivity, so the observations are often distorted by the curve