Phase Transition Exploitation of Condensate Gas ReservoirUsing Black Oil Model Method and Mass Balance Principle
用黑油模型方法和物质平衡原理处理凝析气藏的相变开采问题

During the pressure-depleted exploitation of condensate gas reservoirs, PVT phase behavior transition will occur because of the changes of condensate gas composition, stratum porous media, temperature and pressure, especially the pressure decrease. According to these characteristics, this paper establishes a mathematical model that deals with the phase behavior transition exploitation of condensate gas reservoirs using the black oil model method and the mass balance principle. And it is used for the imitating and forecasting of the main parameters of an actual condensate gas reservoir, and all the parameters are close to the calculating results from the condensate gas reservoir exploitation and experiment. The aim is to avoid the appearance of retrograde condensed liquids under dew point pressure in formation near the wellbore bottom, and keep higher productivity, recovery ratio and production benefits for the condensate gas reservoir.