Abstract：The purpose of studying seismic facies lies on reconstruct the sedimentary history and structural history of basin.The analysis of seismic facies means identification and mapping for seismic facies unit on the basis of seismic attributes.Using manual neural network analysis technique to automatically identify and classify seismic waveform of channels and its reflected geologic feature in the paper,the seismic map is obtained and correlation and synthetic analysis with known drilling data and regional geologic data is carried out,resulted in sedimentary facies corresponding to seismic facies and identified wanted geologic targets.The real cases further proved that automatic identification of seismic facies has clear priority in description of such geologic bodies as delta,turbidite sandstone and palaeo-eroded geomorphology,the paper also introduced automatic identification method of seismic facies for 2-D lines.
