Stratigraphic meaning and application case of interpretation mode of subtle trap

In view of the difficulties of subtle trap exploration in the middle Junggar Basin,based on the theories of sequence stratigraphy and slope break belt,it was proposed for the first time in this paper the name and definition of "isochronous-trap seismic geologic interpretation mode".The mode was discussed and practiced in single subtle trap formed by single lobes body according to the isochronous nature of sequence contrast and the effectiveness of morphology trap.In solving the problem of serial layers between well Z6 and well Z7,the time and space combination features of subtle trap among lobes bodies were summarized as jigsaw puzzles.A new interpretation method based on the idea of "connection along axial direction and isolation between layers" was put forward.