Seismic Data Of Different Source Closure Processing

In the international land seismic exploration, seismic vibrator has become the most prominent in the excitation source which is widely used in petroleum explora-tion and development. In this article, simulation of the current popular vibrator sweep signal, compared to discuss the linear sweep signal with attenuation of the linear sweep signal and nonlinear attenuation scan with the signal, obtained under different scanning signal characteristics of the relevant records. Papers on the slopes of linear scanning signal processing method, the relevant records related to some sub-Bourbon flap effectively suppressed, the length of the scan signal scan time, the choice of bandwidth was discussed. Absorption and attenuation in the earth under the conditions of linear sweep signal generated by the resolution would significantly reduce the rel-evant records, the reality does not meet the requirements of the deep strata exploration. To compensate for this attenuation, using non-linear vibrator sweep signal instead of linear scan signals, and for modeling, get a better compensation effect.The vibrator can not completely replace the traditional dynamite source. There-fore, two focal exploration seismic data need a closed technology of processing.A ideal vibrator wavelet is zero-phase, but traditional dynamite source wavelet is mini-mum phase. You need transform zero-phase wavelet into a minimum-phase wavelets. If it dose so, you have a good closed processing result. However, it is the fact that vi-brator sweeping will be attenuated. The relevant wavelet is no longer zero phase, but it is the mixing phase wavelet. In this case, despite the phase have been converted, but you always can not get a good result.In view of this, the paper applies energy com-pensation to the vibrator, and it is the S-transform method. For the wavelet phase conversion, the paper proposes three-phase conversion and discusses them in details.The thesis focuses on the data closure which different seismic sources combina-tion. The thesis can slove that the key technical problems to be solved for a variety of exploration source jointing application. In the case of the vibrator has been large-scale used, the application the thesis has given can fill the advantages of the combined ap-plication of different time periods seismic data.By the way of of the comprehensive knowledge application in digital signal processing, numerical computation, software design, seismic data processing and seismic exploration principle, the thesis gain mang good results on the base of in-depth and fruitful research.This thesis suggest that the vibrator to carry out large-scale oil and gas explora-tion will continues to play the value for the comparison and the closed data in the source of the vibrator and dynamite in the future. This will be particularly important in the domain of the oil and gas fields which dynamite sources have been made a large-scale application.