Based on such means as utilizing the working methods and the principles of sequence stratigraphy,making the best of the formation correlation technique of high-resolution sequence stratigraphy,applying logging,drilling and seismic data,and choosing the isochronal boundary as the regional marker bed for stratigraphic correlation,the authors set up the uniform isochronal formation framework of C Formation in the G Oilfield of Syria.On such a basis,the authors used GR and density to invert the profile and make reservoir prediction.The distribution of the reservoir was detected through the study of the lithologic character.