Study On Improving Seismic Data High Band Snr And Useful Frequency Bandwidth

With further exploration and development of oil and gas ,fidelity and accuracy of achievements are required higher and higher. The key based on seismic data processing results fidelity is reflected in the effective seismic data bandwidth of development, especially the high frequencies frequency width and SNR. Improvement effectively of the seismic data SNR and useful frequency bandwidth will have an effect on fidelity of seismic data processing results.Be aim for Songliao Baisin lithologic reservoir this paper researches to improve the high band SNR and useful frequency bandwidth methods, and high precision static correction technique , attenuation of high fidelity nonlinear restriction surface waves, self-adaption coherent noises suppression and keeping SNR deconvolution, and so on. through the study we will improve the SNR of seismic records on the premise of protecting low frequency information as possible ,achieves the target of increasing the SNR and resolution, and further enhances the main frequency and frequency bands.Through the persistent study we had formed some key technology of high resolution seismic data processing as for Songliao Baisin middle-shallow layer and thin crossing reservoir. At the same time, we optimized the various methods parameters and flows to gain the seismic data with high resolution, high fidelity and high SNR seismic data.Which will satisfy the oilfield requirement with microstructure interpretation, lithological reservoir prediction and drilling success ratio.