A study of the near surface high-frequency compensation technology in 3-D seismic exploration
近地表高频补偿技术在三维地震勘探中的应用研究

The filtering effect of Earth surface rapidly attenuates high frequency contents and distorts wavelets phase.Desirable processing of high resolution seismic data must compensate for the attenuation and frequency dispersion.In the paper,we demonstrate a research on the rules of near surface absorption.We show that the attenuation compensation of low-velocity layers can be achieved according to the information of micro-seismogram logs.In addition,we have found out the method of near surface High frequency Attenuation compensation on 3-D post-stack seismic data,which then has been applied to Daqing Qijia Bei area.The attribute analysis technology has clearly showed us that the result is effective and the method is feasible.