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随着石油、天然气勘探工作的深入,我国陆上与近海地区已发现许多凝析气藏(Gas condensate Reservoir)。这类气藏的特点是,在原始地层压力和地层温度条件下,地层流体呈单相气态存在。原始地层压力大于露点压力的凝析气藏称未饱和凝析气藏;原始地层压力等于露点压力时称饱和凝析气藏。 对于未饱和凝析气藏,只有当地层压力降至露点压力以下时,在地层中才会出现反
With the deepening of oil and natural gas exploration, many gas condensate reservoirs have been discovered onshore and offshore in China. This type of gas reservoir is characterized by the presence of single-phase gas in the formation fluid under the conditions of initial formation pressure and formation temperature. The condensate gas reservoir whose original formation pressure is greater than the dew point pressure is called an unsaturated condensate gas reservoir. When the original formation pressure is equal to the dew point pressure, it is called the saturated condensate gas reservoir. For unsaturated condensate gas reservoirs, anti-condensable gas will only appear in the formation when the pressure in the formation drops below the dew point pressure