Abstract: Kerogen from some source rocks in the third and forth members of the Sahejie Formation in the Linnan Sag,the Bohai Bay Basin have been reported to be sulfur-rich.However,there has been little knowledge about the petroleum-generating model of this type of kerogen.In this paper,the kinetics method was applied to investigate petroleum generation kinetics parameters and geological model for a typical sulfur-rich kerogen from the sag.The results have shown that the oil-generating threshold of the kerogen occurs at EasyR_o of 0.53%,the oil-generating peak range from 0.60% to 0.75% and oil-generating death line at 0.85%,corresponding to burial depths of 2 500 m,2 600～3 250 m and 3 850 m,respectively,and its gas-generating threshold is at EasyR_o of 1.05% and main gas generation stage occurs from 1.23%,with a burial depth of 4100m and 4 650 m,respectively.Compared with conventional kerogen petroleum-generating models,this sulfur-rich kerogen is characterized by a narrow oil window and an earlier occurrence of oil-generating peak.This result will provide a guide to the petroleum evaluation and exploration in this area.