VSP弹性波方程正演模拟与波场分析
Petroleum Geophysics(2006)
Abstract
本文采用的VSP弹性波方程交错网格高阶差分法网格频散小、边界吸收精度高。不同井源距VSP正演结果表明,随着井源距增加,波场干涉对直达波影响加重、各类波场非线性特征趋于明显、能量分布特征变化增大,特别是上行反射P波与上行转换SV波视速度差异变小。这些结果在三维VSP处理中都要有足够的重视。
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Key words
modeling and wave field feature,elastic wave,VSP
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