Using the spectral attributes peak frequency and peak amplitude, we performed a time‐lapse seismic interpretation in Rulison Field, Colorado. Time‐lapse maps with P‐wave data show a negative peak amplitude anomaly, (EUR) wells in an area with a fault and fractures associated to it. Time‐lapse maps with S‐wave data show a positive peak frequency anomaly which correlates with the best producing wells during the time‐lapse analyzed in this study. These results highlight the importance of faults and ractures to generate high productivity areas and spectral decomposition as a tool in exploration and production of tight gas reservoirs.