Dynamic analysis of downhole pressure with well test model for complex condensate gas reservoir in Area3

A new well testing model is established for the complex condensate gas reservoir in Area 3. An expression of downhole pressure has been derived for 3 conditions such as infinitely great external boundary, sealed and given pressure , and corresponding type - curves are presented. Dynamic change of downhole pressure and its influence factors are analyzed and discussed for this reservoir. This new model closely accords with the practical process of condensategas reservoir recovery. This may guide the recovery analysis and study of such reservoirs.