Optimization design of rich low frequency air gun source based on wide pulse wavelet
At present,the design and application of seismic source system is the primary factor affecting the high resolution exploration in the field of marine exploration.Air gun has become the most widely used seismic source selection in the actual production process because of its stable and reliable performance and consistent shape wavelet.The wavelet of air gun is the main analysis object of seismic data processing,and the wavelet with good performance can greatly improve the data resolution.Based on the analysis of the principle of influencing factors of seismic wavelet,the wide pulse wavelet with a wider band range is selected,and the wide pulse wavelet has rich low-frequency information,which can better divide the formation boundary.Based on the non-ideal gas air gun wavelet model,we construct broad-pulse wavelet,analyze the effect of delay time excitation of different capacity air guns on the wavelets through a large number of data simulations,construct the preferred air gun arrays,and design a higher resolution air gun seismic source.
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