Abstract: Based on detailed discussion of improving method of synthetic seismogram, an improved processing method and processing procedure are suggested. ① Before making the synthetic seismogram, the basis correction of well-logging data, drilling data seismic data, and acoustic correction should be made firstly. ② Calculation of re flection coefficient by adopting non-uniform algorithm is carried out.③ Adapting the wavelet of frequency variation theory, its frequency must be determined by actual seismic channel number nearby the well. ④ Synthetic seismogram must be calculated by inversion method. ⑤ carrying out moveout correction of synthetic seismogram. Actual data have shown that the synthetic seismogram calculated by mentioned improved method is very closed with match the actual seismic records, and can be used for accurately correlating the seismic geologic horizons.

Key words: synthetic seismogram, seismic record, reflection coefficient, acquisition parameters, seismic facies, formation correction