Study on the change law of dew point pressure after gas injection in fracture-cavity condensate gas reservoir

In this paper, taking a condensate gas reservoir in the Middle Tarim Basin as an example, the fluid of the condensate gas reservoir was calculated according to the provided condensate oil sample, and the accuracy was verified by PVT experiment. The regularity of dewpoint pressure after adding different proportion of light component gas (produced gas) into the condensate gas was tested under reservoir conditions..