In oilfield development, the reservoir performance information which the transient well test reflects is very abundant, however, at present, the employment of well test data is only individual well and single well test. The author have had rich well test experience over the past years, investigating lots of datum, analyzing the transient well test datum, focusing on analyzing the reservoir geological model which is reflected by the transient well test curve, thereby, the author thinks that studying the formation dynamic by analyzing reservoir model variation is a efficient method, and analyzing the reservoir performance, at the same time, it is no doubt that the formation pa-
rameters obtained by well test datum, but what’s important is that the reservoir characteristics information attained by it. So,we should analyze adequately reservoir model variation and study formation dynamic, accordingly, recognizing reservoir better, enhancing reservoir management, instructing reservoir development, which should be attached importance to in view of the investigators for analyzing the well test datum and reservoir
development managers.