Investigating the frequency variation of a signal with time is considered as a useful tool for interpretive applications. The Wigner-Ville distribution is a time-frequency display of the second order, which provides a solid foundation for analyzing the momentum frequency of seismic data and extracting seismic markers. However, because of its second-order nature, the effect of the Wigner-Ville cross terms sentences limits the interpretation of this play. In this research, the key idea of the method of maximum leaf entropy has been used to overcome this problem. In this study, the method was evaluated on actual data related to one of the gas fields of the north of the country and its results were interpreted. The results showed that the method used for more accurate analysis of the instantaneous frequency sections in the gas range was used.