In recent years, considerable interest has been generated in the problem of determining the phase characteristic of seismic wavelets accurately, two factors largely account for this, increasing need to extract detailed stratigraphic information from seismic data, and realization the phase assumptions in statistical deconvolution schemes may not generally be valid, and that the resulting deconvolved sections may differ considerably from zero-phase. The purpose of this paper is to demonstrate a method of extracting a seismic wavelet by well log data. From that we concluded that wavelets are powerful tools for analysis of field data, that is coming from analysis data and it is an excellent tool of field data compression .