井间地震正演模拟

Simulation of the Well-to-Well Seismogram

在水平层状介质条件下,给出了一种计算平面波源井间合成剖面的算法,波源和接收器可以放置到任意的深度。根据Sommerfeld平面波合成公式,给出了线源井间合成剖面的算法,即把一些不同入射角的平面波源的井间合成剖面进行叠加,得到线源的井间合成剖面。应用该算法分别计算出上行P波、下行P波、上行SV波和下行SV波合成剖面,试算表明,可获得令人满意的结果。

In this paper, a algorithm for generating synthetic well-to-well seismograms for plane-wave sources with different incident angles is given which is suitable for layered media and permits sounces and receives to be located in arbitrary depths. We also develop a method for generating a synthetic well-to-well seismogram for a line-source by superposing the plane-wave synthetic seimograms with different angles according to Sommerfeld plane-wave synthesis formula. Using the method, we can calculate upgoing P-waves, dovvngoing P-waves, upgoing SV-waves, downgoing SV-waves synthetic seismogram separately. The results of the examples in the paper are satisfactory.