Abstract: Due to the strong heterogeneity of vuggy reservoirs in the Tahe Oilfield, it is difficult to judge reservoir structure by coring and logging. Meanwhile, the application of conventional well testing interpretation software is restricted because of poor adaptability. Based on the characteristics of karst landform, a well geological conceptual model is set up according to water injection curve combining with static and dynamic data. Reservoir reforming measurements are taken to improve the efficiency and effect of oil production.