Predicting multiples using a reverse time demigration
Predicting multiples using a reverse time demigration
复制标题
DOI：
10.1190/segam2012-0520.1
复制
发表时间：
2012-11
期刊：
影响因子：
--
通讯作者：
Yu Zhang;L. Duan
中科院分区：
文献类型：
--
作者：
Yu Zhang;L. Duan
We have developed a method of reverse time demigration (RTDM), which uses the seismic image to predict different wave phenomena, such as reflections, refractions and multiples. Based on it, we introduce a new way to predict both surface related multiples and interbed multiples, which takes advantages of the two-way wave equations and can be adapted to different acquisition geometries. We have found that adding a coupling term to a conventional RTDM leads to unstable wave propagation. As a solution, we propose to convert the depth image into a pseudo-density function by solving a nonlinear inversion problem. Our preliminary numerical experiments demonstrate that the proposed method works stably and provides reliable multiple prediction in even complex geologies.
