Abstract：Coherence technique analyzes waveform similarity between seismic traces.It uses horizon or map to display the fault and bed boundary characterized by uncontinuity.The paper started from the principle of coherence technique and discussion centered on selection of parameters and technical characters.There are two important parameters in coherent data processing-number of coherent traces and coherent windows.The 3 traces and 50 ms window have been selected when processing will reflect the property of bed boundary and 9 traces and 50 ms window have been selected when processing will reflect the property of fault character.When compared coherent analysis with techniques such as ordinary time-amplitude slices,instantaneous phase slices and boundary detection etc,it noticed that the former has its unique feature in interpretation of fault and bed boundary etc.
