摘要
针对柱状双层流体饱和孔隙介质包围的井孔中的声电(震电)耦合波和弹性波的传播问题进行研究。通过引入Helmoholtz势函数分解法,采用Pride动电耦合方程组理论推导出井内声场,电磁场及井外径向分层的流体饱和孔隙地层中声电耦合波的理论解,计算考察并分析了介质参数对波场特点的影响,得出界面波响应是可用于探测井外界面或裂隙的一种潜在新方法。
Seismoelectric wave propagation in a borehole surrounded by a cylindrical double layered fluid saturated porous formation is investigated. By introducing the Helmoholtz potential function decomposition method, using the theory of Pride dynamic and electric coupled equations to derive the theoretical solution of acoustic and electric coupled wave in stratified fluid saturated porous formation. Influence of formation parameters on the characteristics of waves field calculated and analyzed. It is concluded that the seismoelectric interface response(SIR) is a potential new method to detect the interface of the well or crack.
引文
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