简化的声电耦合方程的势函数解

Potential Solution of Simplified Pride's Governing Equations

提出了声电耦合方程的一种新解法,该方法将声波扰动产生的电磁场视为似稳电磁场,根据似稳电磁场的性质将声场与电磁场方程分离,使得声波方程能独立求解。在轴对称条件下,讨论声电耦合波在井外多孔介质中的形式解,并给出声压和轴向电场强度的数值模拟。研究发现声电耦合效应在阳离子交换量大、渗透率高的地层中效果更加明显。

A new solution for coupled acoustic-electromagnetic equations is put forward. The electric field excitated by acoustic wave is approximate to quasi-stationary electromagnetic fields. According to the characteristic of quasi-stationary condition, the equations of coupled acoustic-electromagnetic wave are predigested and the potential solution is given. Numerical examples show that it is better to apply this effect in the stratum of high cation exchange capacity and high permeability.