Rock typing by different techniques is useful to interpret the zoning of reservoir. As the hydraulic flow unit has an effective connectionbetween the geological and petrophysical conditions, recognition of distribution quality of flow units in a reservoir can be useful for separation of reservoir into different units with different reservoir conditions. In this study, by using of flow zone indicator (FZI), six flow units has been determined based on the porosity and permeability data in both wells A and B of the Bangestan reservoir in the MansouriOil Field. The main statistical parameters of Porosity and permeability data for each of flow units (HFU) shows HFU3andHFU1 have the highest and HFU5 and HFU6 have the lowest reservoir quality in the oil field. In order to cluster validity, silhouette approach was used to hierarchical and K-means clustering methods and finally hierarchical clustering was selected as the best method and the porosity and permeability data for both wells were included in the six clusters (RT). Comparison between Hierarchical clustering method with the flow units and microfacies indicated acceptable results for both methods.