Abstract: The basic correlation of Models for Type A and Type C displacement curve and production prediction are presented, and the solutions for these models have been found simultaneously,followed by developing a functional correlation of water cut vs. production history(t). Meanwhile, the methods for calculating water cut, annual oil production rate and accumulative production, etc. are provided. By applying them into Samaterol oilfield, it is indicated that the methods can be well used in performance prediction of an oilfield development, because such problems without time factor in curve prediction model and without water cut in production prediction model have been all solved.

Key words: water drive, displacement curve, production, prediction, model, application