Technical bottleneck and research effect analysis of seismic exploration of Yili basin

The seismic-geological conditions of near surface and deep formation of Yili basin are complex, the seismic exploration is difficult and the existing seismic data is unable to meet the exploration needs. Therefore, in view of the restriction and influence reflection quality, the two geological bottlenecks, the systematic research of seismic technology has been carried out. Based on the multiple wave suppression effect observation system optimization, the giant thick gravel layer down deep well big dosage excitation, combined multiple suppression and residual energy compensation technologies have been applied, which can better suppress multiples, improve the strong coal measure strata of the effective reflection energy, and obviously increase profile quality.