Ye Yueming, Zhuang Xijin, Hu Bing, Li Zhenchun, Chen Jianwei
1.Hangzhou Research Institute of Ueology, Petro China, Hangzhou, Zhejiang 310023, China;
2.China University of Petroleum(East China)Qingdao, Shandong 266555, China
Abstract：One-way wave equation based preserved amplitude prestack depth migration can not only provide the kinematic but also the dynamic information.It can be called true amplitude migration in a certain extent.Compared with the conventional one-way equation based migration methods,amplitude compensation item is added during the migration which decrease the computation efficiency.In order to solve the problem,we introduce the oneway based synthetic plane wave preserved amplitude migration.It can greatly improved the computation efficiency and provide directional illumination for subsurface structure.First,we derive the synthetic plane wave preserved amplitude migration equation and then test that with plane layer model.We compare and analyze synthetic plane wave migration results from conventional migration operator and preserved amplitude migration operator.Finally,we test with complex Marmousi model to prove the adaptability and validity for complex structure.
