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凝析气 Ｐ Ｖ Ｔ 分析数据是进行气藏数值模拟及开采工艺设计的重要参数，没有这些参数，气藏的开发设计往往不能正常进行。但是在现场，往往由于一些原因，在气藏开发初期未能进行 Ｐ Ｖ Ｔ 取样分析或没有取得有代表性的 Ｐ Ｖ Ｔ 样品，这给进行相态分析和开发研究带来困难。南翼山 Ｅ３ 凝析气藏就是这样一种情况，由于早期测的地层温度不准确以及样品是在井筒６０ ｍ 处取得的（ 不符合凝析气井的取样规范） ，故样品分析结果与生产实际明显不相符合。文章给出凝析气藏相态恢复的原理和研究思路，针对南翼山 Ｅ３ 凝析气藏提出了相应的相态分析方法，恢复了南翼山 Ｅ３ 凝析气藏相态特征，获得了原始流体参数场，从而方便地计算出该气藏原始状态下的各种流体参数。
The condensate gas P V T analysis data is an important parameter for the numerical simulation of gas reservoir and the design of mining technology. Without these parameters, the design and development of gas reservoirs often can not be carried out normally. However, in the field, P V T sampling analysis or representative P V T sample is often not available at the early stage of gas reservoir development for some reasons, which makes it difficult to conduct phase analysis and development research. This is the case with the N3 condensate gas reservoir in the Nanyishan area. Because of the inaccurate formation temperature measured in the early stage and the sample taken at 60 m from the wellbore (which does not meet the sampling standard for condensate wells) Obviously does not match. In this paper, the principle and research ideas of the phase recovery of condensate gas reservoirs are given. According to the E3 condensate gas reservoir in Nanyishan, a corresponding phase analysis method is proposed to recover the phase character of the E3 condensate gas reservoir in the South Wing. The original fluid parameter field, so as to easily calculate the various fluid parameters in the original state of the gas reservoir.