Structural imaging study of high steep inclination based on cross-well seismic data reverse time migration
In order to study the fine imaging of high steep dip structures,conventional seis-mic survey methods and imaging techniques cannot achieve good results.In contrast,cross-well seismic excites and receives seismic waves in the well,avoiding the absorption of the seismic wave field by the low drop velocity zone,and can obtain high signal-to-noise ratio seismic data.Meanwhile,the reverse time migration imaging method can accurately image complex structures such as high steep dip.Therefore,this paper combines the advantages of cross-well seismic and reverse time migration methods to investigate the imaging of high steep dip coal seam structures in the X coalfield.The high steep dip structures are imigrated by using inverse time migration method in surface seismic observation systenm,VSP obser-vation system and cross-well seismic observation system.The results show that the cross-well seismic reverse time migration method has good imaging effects in high steep dip struc-tures and can effectively guide the fine exploration of coal seams in high steep dip struc-tures.
cross-well seismicVSPhigh steep dip structuresreverse time migration
万方数据
维普
