Abstract: In order to study the reservoir properties and their influencing factors of the Damoguaihe formation of the Wuerxun depression in Hailaer basin, the arthur analyzed 18 well tests from 8 wells, 230 thin sections, and about one thousand pore throat parameters, resulting in 7 pore throat structure models. The reservoir rock is of moderate porosity, low permeability and weekly Water wet. The complex pore stucture pattern and large specific surface area are important factors affecting hydrocarbon migration and acumulation.

Key words: Wuerxun depression, Reservoir property, Pore throat model, Well test Reservoir medium, Damoguaihe formation