Abstract: Biomarkers is the most common material in oil-source correlation. It is easy to result in the wrong oilsource correlation for multisource or multiple accumulations reservoir because of the obviously different content of biomarkers at different mature stages. Because only biomarkers are used and changed content of biomarkers ignored in different stages, different people give the different result to the oil-source correlation of Hongche oil field in zhunger basin. The auther integrates light hydrocarbons and biomarkers to resolve the oil-source correlation effectively in Hongche oil field. The result that the oil distribution has the obvious regularity are given and the oil of the Permian and Carboniferous stratum of the north section of the fault block belt is pointed out to be from Fengcheng group hydrocarbon source rock; Oil of Jurassic and Cretaceous stratum in South central section comes from Wuerhe hydrocarbon source rock, and belongs to the mature crude oil.
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Key words: biomarkers, oilsource correlation, limitation, light hydrocarbons, Hongche Area, Zhungaer Basin