Generation mechanism of ghost wave in marine seismic exploration and ghost wave attenuation from marine seismic data

In marine oil and gas exploration,for the purpose of accurately acquiring the high-precision and high-resolution reflection information of the exploration target and realizing more delicate imaging,broadband acquisition and processing technology of marine seismic has been greatly innovated and developed in recent years.In this paper,the generation mechanism of ghost wave,the classification and characteristics of ghost wave and its manifestation in actual seismic data are studied.The high-resolution radon transform in frequency domain is used as the main processing method to attenuate ghost wave in a broad-band data of a straight slant cable.After the ghost wave suppression processing,the source ghost wave and cable ghost wave of seismic data have been greatly attenuated,and the notch energy has been significantly enhanced.The broadband processing not only broadens the low-frequency component of seismic data,but also broadens the high-frequency component of seismic data;especially,the low-frequency component energy has been significantly enhanced.This method has achieved good results in the application of marine seismic data.