Application Research On The Technology Of Multiple Wave Suppression Of Marine Seismic Data

In marine seismic data,multiple waves not only affect the accuracy of seismic imaging,but also the subsequent interpretation work.Firstly,this dissertation introduces main methods of suppressing multiple waves both at home and abroad,analyzing the characteristics of different methods.Secondly,it introduces the classifications and characteristics of multiple waves,and mainly focuses on the principle of SRME(Surface-Related Multiple Elimination)method and the parabolic Radon transform method.The parabolic Radon transform method is programed to suppress multiple waves.It can separate the reflection wave field and multiple wave field,and suppress multiple waves with and without random noise.Lacking near offset of marine seismic data would impact on the application of SRME method.To solve the above problem,this dissertation uses the parabolic Radon transform method to realize offset reconstruction and gets great results.Finally,both SRME method and parabolic Radon transform method are applied to the real seismic data of the South China Sea,which shows that the combination of the two methods can get better results.