A high-resolution processing method for editing time-varying and spatiotemporal spectra of 3D seismic data
Due to various reasons,such as absorption and attenuation of seismic data,the longitudinal resolution of the seismic profile sometimes cannot meet the needs of exploration and development so that the seismic data will be processed by increasing frequency or strengthening the dominant frequency band.In this paper,through 3D operator editing,3D space vari-ant linear difference calculation,and moving step smoothing in the frequency domain,each trace of 3D seismic data volume cor-responds to its corresponding spectrum adjustment operator.Then,the operator is converted to the time domain using the seis-mic data convolution operation method.When time variant adjustment is required,the convolution operation between multiple time windows is processed by difference and extrapolationto realize the space variant and time variant spectrum editing method of 3D seismic data volume.Through the application of analog data and actual data,it is verified that the method in this paper can effectively optimize the programming of frequency amplitude spectrum and has a good role in improving the resolution of data,expanding the frequency band of data,improving the dominant frequency,strengthening weak signals,etc.
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