Study On Heterogeneities Of Chang2Reservoirs Of Yanchang Formation In Tian Ciwan Area Of Jingbian Oil Field, Ordos Basin

By the application of sedimentology, petroleum geology, logging geology and other discipline’s theory methods, and based on well drilling, logging and testing data analysis, from macroscopic and microcosmic aspects to make a study of the Chang2reservoir heterogeneity of Tianciwan area in Ordos basin.Through the research, we found that the Chang2triassic reservoir in Tianciwan area of Ordos Basin is low porosity and permeability reservoir. On the basis of reservoir heterogeneity, diagenesis diverse, the complex distribution of pore structure characteristics., we get the classification of comprehensive evaluation of the reservoir. Through the heterogeneity of physical parameters, layered coefficient, sand density, interlayer, connectivity factor and other parameters. Summed up the characteristic of heterogeneity and reservoir heterogeneity factors. Briefly discusses the heterogeneity of reservoir properties in this area at last.The reservoir microscopic and macroscopic heterogeneity has a certain influence to the reservoir, the reservoir heterogeneity, especially the surface heterogeneity’s distribution has a certain control action, mainly the sedimentary faces control of reservoir sand.