Research On The Processing And Deghosting Method Of Single-channel Seismic Data

The offshore seismic exploration has many patterns based on the different locations of geophone and source,such as,multi-channel seismic exploration,3-D seismic exploration,shallow profile seismic exploration,single-channel seismic exploration and so on.High resolution single-channel seismic exploration has been widely used in marine geophysical survey around the world with its advantages of flexible configuration,simple operation,high efficiency and economic characteristics.Otherwise the geophone is so close to the source that we consider it's a zero offset profile,so it can detect stratum structures more essential.Everything has two side,the effect of the noise is more serious because of the single channel receiver.However,there is so many multiple and ghost in single-channel seismic profile that caused by sea surface and bottom.The existence of those noise can reduce the S/N ratio and resolution of the seismic data,affect the reality and reliability of seismic imaging,and make the interpretation confusing.So it's meaningful to improve the quality of the profile processed with deghosting and multiple attenuation.We has a comprehensive discussion on the formation and classification of multiple,and the identification features of multiple on single channel seismic section.For a long time,the multiple problems research mostly focused on the multi-channel seismic data of pre-stack processing,but lack of suppression methods and research achievements for single channel seismic data.Until now,deconvolution and SRME are the most useful method for the multiple attenuation.In this paper,the SRME has been successfully used to suppress multiple.Then we study on the ghost,including it's factor and effect on seismic record.We also had nice try on deghosting by deconvolution.In this paper,we talk about the problem in single-channel seismic data processing,and came to the conclusion that the common processing flow is: Bandpass filter-Amplitude correction-Anomalous amplitude noise attenuation-SRME-Deghosting(Deconvolution).