Abstract: Yitong Basin is a complex fault depression basin with large-scale reserves explored in Jilin Oilfield in the past ten years. Structural interpretation and glutenite reservoir prediction are always difficult in the basin. During the process of probing into seismic data interpretation applicable to the basin, by optimizing and combining multiple applicable seismic technologies, basal conglomerate and basement granite of the target layer of the basin are identified by using instantaneous-phase attribute technologies. Effective structural interpretation of old data of the basin is fulfilled by combining the technology of time slice with the 3-D visualization technology. Lithologic traps are identified effectively based on the combination of seismic attribute analysis and wave impedance inversion.

Key words: instantaneous phase, time slice, 3-D visualization, fine structural interpretation, seismic attribute analysis, wave impedance inversion, lithologic trap