Abstract: The traditional water drive characteristic curves have a better adaptability to waterflood process of medium water?cut stage rather than high water?cut stage for its trend of upwarping characteristic curves, which results in large errors of the development of performance analysis and dynamic index prediction at high water?cut stage. In this paper, a new type of water drive characteristic curves is established to be suitable for the high water?cut stage, and the relationship graphics of water cut and the degree of recovery of recoverable reserves are plotted. Since the derivation constraint, the new water drive characteristic curve is not applicable in the presence of water?free production period of oil and gas reservoirs. The cases studies show that the new water drive characteristic curve for prediction of the upwarping trend of water cut at high water?cut stage may match well with the real history and allows the error between the predicted recoverable reserves value and the actual value to be small