Based on the Eh2 reservoir core samples from the Dongzhuang,Zhangdian and Beimazhuang Oilfields of Nanyang sag,a systematic analysis of fluid inclusions is employed to study the hydrocarbon charging histories in the reservoir.

Based on the characteristics of reservoir and structure in Linnan area, this paper studies the time of petroleum accumulation, oil and gas charging and migration as well as the types of lithologic reservoirs.

On the basis of a study of the oil geochemical characteristics and inhomogeneities of the burial hill reservoir in Caotai, Liaohe, this paper discusses some important factors of oil accumulation, such as the oil source, oil-gas filling direction and migration pathway, therefore, provides new information for further exploiting and developing oil-gas in the region.

This paper has discussed some problems in studying hydrocarbon charge history by fluid inclusion technique and analyzed the charge history of BZ25?1 oilfield by using the data.