摘要
利用正演模型、其他井间地震资料和VSP速度资料,分析了Walk-awayVSP记录上一组波的性质。分析结果表明这是纵波震源所激发的纵波在地表浅处某个强阻抗差界面上产生的转换横波。由于这种波具有纯横波的运动学特点,因此可以用于计算横波的速度。
A group of waves on Walk-away VSP record are analyzed by using a forward model, crosshole seismic data and VSP velocity data. The result shows that it is a conversion shear wave produced by compression wave on fiat surface having strong impedance difference. This kind of conversion wave can be used to calculate velocity of shear wave as it has characteristics of true shear wave in kinematics.
出处
《油气地球物理》
2006年第3期5-8,共4页
Petroleum Geophysics
