Abstract：Micro seismic facies analysis, which is based on reflection waveform analysis, aims at determination of lateral lithology variation in reservoir. The assumptive premise of the method is that the variation of sedimentary unit must result in changes in amplitude, frequency and phase of reflection wave from the sedimentary unit; in other words, different geologic horizons cause different waveforms of seismic reflections. Hence, micro seismic facies analysis can be successfully achieved using interactive interpretation system plus fuzzy dynamic clustering and pattern recognition
