Abstract: Salt-related structure modeling is an important link in seismic data processing and interpretation of Kuche Depression. Because of the different starting points of research, structure modeling varies a lot in methods and purposes, such as modeling of salt morphology, modeling of structural movement patterns, and modeling of oil and gas reservoir models. On seismic profiles distortion of structural feature of Kuche Depression is serious, so failure drilling wells often occur when arraying wells according to seismic results. 80% failure drilling wells are related to the unascertainment of traps. The degree of ascertainment of traps depends on velocity accuracy and structure modeling. Starting from the exploration practice in Kuche Oilfield, to correct the distortion of salt-related structure in time domain, new comprehensive classification methods are used to combine the velocity structure, the structural configuration, and the lithology of the formation rationally. And 10 new models of salt-related structure are established, which plays a positive role in improving trap accuracy and arraying wells.

Key words: Kuche Depression, new model, comprehensive, seismic, geology, velocity, ascertainment, trap