Prediction of The Phase Behavior of Gas Condensates

王鹏; 郭天民

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Prediction of The Phase Behavior of Gas Condensates

更新时间：2025-12-16

- Prediction of The Phase Behavior of Gas Condensates
- CIESC Journal Issue 4, (1991)
- 作者机构：
  
  石油大学研究生部,石油大学研究生部 ,北京,北京
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 August 1991，
  
  Published：25 August 1991
- 稿件说明：
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王鹏, 郭天民. Prediction of The Phase Behavior of Gas Condensates[J]. CIESC Journal, 1991, (4).
DOI：

王鹏, 郭天民. Prediction of The Phase Behavior of Gas Condensates[J]. CIESC Journal, 1991, (4). DOI：

摘要

针对含重质烃的多元混合物提出了PR模型参数新的关联方法.对多于7个碳的重烃

其状态方程参数a和b改为通过可由实测数据确定的T_B、(?)和T计算

避免了由不同经验关联式计算的临界参数T_c、P_c和(?)值不一致的缺点.作者将经上述改进的PR模型应用于凝析气相态行为的模拟计算(露点压力、恒质量膨胀和恒容衰竭等过程)取得了较满意的结果.

Abstract

The method for correlating the parameters of Peng-Robinson equation of state has been improved. As compared with the original Peng-Robinson equation and Soave-Redlich-Kwong equation of state

the modified Peng-Robinson model significantly improves the predictions of saturated vapor pressure and liquid density of heavy hydrocarbons(C7+)

however

only minor improvement in saturated vapor density prediction if observed. For light components(C7-)

theprediction of saturated vapor pressure and vapor density by the modified Peng-Robinson model is as good as Soave-Redlich-Kwong and Peng-Robinson equations of state. However

the description of the saturated liquid density is far superior. The modified Peng-Robenson model is used to predict the phase behavior fo gas condensates (dew point pressure

constant mass expansion and constant volume depletion processes)

and better results are obtained.

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