连续介质中任意炮检距的球面扩散补偿因子

COMPENSATION FACTOR OF SPHERICAL DIFFUSION WITH ARBITRARY OFFSETS IN CONTINUOUS MEDIUM

石油勘探开发科学研究院地质所

合理的球面扩散补偿是相对振幅保持处理中的重要因素之一。本文导出了在波速随深度线性增加的连续介质中任意炮检距水平界面反射波的球面扩散补偿因子。通过与零炮检距球面扩散补偿因子的比较得出:炮检距对球面扩散的影响在多数情况下是可以忽略不计的。

The equitable spherical diffusion compensation is one of the important factors in relative amplitude-preserve processing. In this paper, the compensation factor of spherical diffusion was derived, which is for the reflection from horizontal interface and with arbitary offsets on condition that the medium is continuous and its velocity is increasing linearly with depth. By comparing with the factor of zero-offset, the following conclusion has been reached, that is, in many of the cases, the affect of the offset on the spherical diffusion was so slight that it could be ignored.