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12 二维SEG/EAGE盐丘模型VSP逆时偏移结果的幅值谱和相位谱 a—噪声压制前幅度谱;b—噪声压制后幅度谱;c—噪声压制前相位谱;d—噪声压制后相位谱

Fig.12 Amplitude spectrum and phase spectrum of VSP RTM results for the 2D SEG/EAGE salt model a—amplitude spectrum before noise suppression;b—amplitude spectrum after noise suppression;c—phase spectrum before noise suppression;d—phase spectrum after noise suppression