In the study of plane heterogeneity, the homogeneity in (1 + 2) 4 (1) depositional unit was the best, while the homogeneity of 42 (2) depositional unit was the worst in upper ng of Chengdao Oilfield.
According to the seismic waveform theories, the seismic facies have been identified and divided automatically and the plane distribution of the depositional systems have also been determined.