基于优化交错网格有限差分法的VSP逆时偏移

刘炜, 王彦春, 毕臣臣, 徐仲博

Reverse time migration of VSP data based on the optimal staggered-grid finite-difference method

LIU Wei, WANG Yan-Chun, BI Chen-Chen, XU Zhong-Bo

图11 二维SEG/EAGE盐丘模型的常规地面地震数据(左)和VSP数据(右)的逆时偏移结果 a—地面数据低频噪声压制前;b—VSP数据低频噪声压制前;c—地面数据低频噪声压制后;d—VSP数据低频噪声压制后

Fig.11 RTM results of conventional surface seismic data (left) and VSP data (right) for the 2D SEG/EAGE salt model a—surface data before low frequency noise suppression;b—VSP data before low frequency noise suppression;c—surface data after low frequency noise suppression;d—VSP data after low frequency noise suppression