| The research of pool-forming model and accumulation process of hydrocarbon in Zhongguai uplift is very significant to the exploration of oil and gas. Systemic oil correlation has been carried out after the classification of crude oil and gas origin to make clear the oil genesis, distribution and source . The times and the major period of petroleum accumulation in Zhongguai uplift is determined according to the studies of hydrocarbon generation history of source rock, oil and gas maturity, thermal history and fluid inclusions. The model and dynamic process of oil and gas accumulation is set up and some advice for the exploration is put forward. The study shows that crude oil can be divided into three general-types, four fine-types; The crude oil of type â… 1 and type â… 2 are from the same source rock and generated in the different periods; there are four times accumulation in Zhongguai uplift and it is characterized with multi-source and multi-periods, same source and different periods, different passage system in the same sag, different filling model for different crude oil type. It is also believed that exploration for crude oil of type â… 1 and type â…¢ is prosperous.
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