基于行波分离的VTI介质逆时偏移

郭旭, 黄建平, 李振春, 黄金强, 朱峰

Reverse time migration in VTI media based on wavefield decomposition

Xu GUO, Jian-Ping HUANG, Zhen-Chun LI, Jin-Qiang HUANG, Feng ZHU

表1 SEG/EAGE salt模型偏移方法计算效率对比

Table.1 Computational efficiency comparison of different migration methods for SEG/EAGE salt model

偏移方法 计算量 平均每炮计算时间/s 常规互相关VTI-RTM算法 $\partial$σxx/$\partial$x,$\partial$σzz/$\partial$z,$\partial$vx/$\partial$x,$\partial$vz/$\partial$z 1398.53 本文行波分离VTI-RTM算法 $\partial$σxx/$\partial$x,$\partial$σzz/$\partial$z,$\partial$vx/$\partial$x,$\partial$vz/$\partial$z,σzzvz 1571.14 本文行波分离各向同性RTM算法 $\partial$p/$\partial$x,$\partial$p/$\partial$z,$\partial$vx/$\partial$x,$\partial$vz/$\partial$z,pvz 1537.28