The application of matching pursuit spectral blueing in post-stack seismic frequency enhancement

Abstract The calculation of the spectral blue operator in the traditional spectral blue scaling method has singularity, and when applied to poststack seismic, it can be observed that the scaling effect is not good by observing seismic profiles and seismic spectra. To this end, a frequency spreading technique based on matching pursuit(MP) and spectral bluening is proposed. Through time-frequency analysis processing, it is shown that the seismic signal extracted by matching tracking method has good stability and higher resolution. The specific process of the method in this paper firstly uses the matching tracking method to accurately divide the post-stack seismic data into multiple frequency-division seismic bodies; Then, in the process of calculating the spectral blue ization operators for each frequency band, the weighting idea is used to calculate the weights of the optimized spectral blue ization operators for each frequency band based on the differences in energy in different frequency bands; Finally, the optimized spectral blue operator is convolved with seismic reflection coefficients to obtain high-resolution seismic data. The actual test results of poststack seismic data have proven that the frequency raising method proposed in this paper is superior to the traditional spectral blue ization algorithm, greatly improving the high-frequency component information of poststack seismic data. After frequency extension, there are more seismic events and higher resolution. Finally, the practicability and rationality of the seismic data after frequency extraction are verified by a series of operations such as attribute extraction, well seismic calibration and inversion.