The parameter selection of middle and shallow seismic exploration based on vibrator

The vibrator has been widely used in petroleum,coal field and other seismic exploration,and the corresponding technical means are relatively mature;nevertheless,there is no reference basis for the parameter selection of middle and shallow seismic exploration with vibrator.In order to study how to obtain high quality data in middle and shallow seismic exploration,the authors carried out a series of "vibrator excitation,high frequency geophone reception" experiments in Xiong'an.Based on a large number of experimental data and using qualitative analysis of original single shot and quantitative analysis of frequency spectrum,this paper systematically discusses the influence of the selection of parameters such as vibration number of vibrator,sweep length,starting frequency,ending frequency,drive level,slope length and natural frequency of geophone on data quality.This paper clarifies the key points and basis of parameter selection,puts forward the concept of high cutoff frequency,and summarizes the strategy of parameter selection for middle and shallow seismic exploration,which provides some reference for the use of vibrator in middle and shallow seismic exploration.