共反射面与共中心点联合叠加成像

Imaging by joint CRS and CMP stacking

吉林大学地球探测科学与技术学院,吉林长春130026

College of Geoexploration, Jilin University, Changchun 130026, China

共中心点 (CMP)叠加是目前生产中普遍采用的叠加成像处理方法, 所用的参数只有速度。共反射面(CRS)叠加则是利用了3个叠加属性参数R_NIP,R_N 和 β₀, 在整个叠加过程中不显含速度模型。将共中心点叠加引入到共反射面叠加中, 利用速度参数来描写共反射面方程, 可以简化CRS叠加的实现过程, 同时使得叠加剖面的物理意义更加明显, 便于后续的处理和解释。

The CMP stacking in which only velocity is adopted has been being widely used in seismic exploration. Instead of velocity three attributes R_NIP, R_Nand β₀ which describe the common reflection surface,are used in the CRS stacking. We introduced velocity parameter into CRS equation and simplified the stacking procedure. The resulting stack sections are geologically realistic and easy to interpret.