新疆石油地质

新疆石油地质 ›› 2009, Vol. 30 ›› Issue (6): 761-763.

• 应用技术 • 上一篇    下一篇

多孔介质中凝析油气体系析蜡实验

燕良东1, 朱维耀2, 宋洪庆2   

  1. 1.中国科学院 渗流流体力学研究所,河北 廊坊 065007;
    2.北京科技大学 土木与环境学院,北京 100083
  • 收稿日期:2009-04-22 修回日期:2009-06-22 发布日期:2020-10-23
  • 作者简介:燕良东（1974-）,男,山东郓城人,在读博士研究生,渗流力学, （Tel）15530112306（E-mail）yanliangdong94@126.com.
  • 基金资助:
    国家 973 项目,中低丰度天然气藏大面积成藏机理与有效开发的基础研究（2007CB209506）资助

The Experiment of Wax Precipitation from Oil-Gas Condensate System in Porous Media

YAN Liang-dong1, ZHU Wei-yao2, SONG Hong-qing2   

  1. 1. Institute of Porous Flow and Fluid Mechanics, CAS, Langfang, Hebei 065007, China;
    2. School of Civil and Environment Engineering,Beijing University of Science and Technology, Beijing 100083, China
  • Received:2009-04-22 Revised:2009-06-22 Published:2020-10-23

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摘要： 通过高温高压仿真模型实验,研究了凝析油气体系在多孔介质内的固相析出机理,发现等温降压过程与等压降温过程中固相的析出具有不同特征。根据相平衡理论和界面化学原理,建立了能够模拟多孔介质中气、液、固三相相平衡的热力学模型。依据模型对实际体系进行了计算,计算结果重现了实验中观察到的现象,合理解释了等温降压实验和等压降温实验时固相析出呈不同特征的原因。

关键词: 多孔介质, 固相, 热力学, 实验数据, 机理

Abstract: The mechanism of wax precipitation from oil-gas condensate system in porous media is researched by realistic model experiment with high temperature and pressure. It is shown that there are different characteristics of wax precipitation in the processes of isobaric cooling and isothermal decompression, respectively. A thermodynamic mathematic model was presented to simulate three-phase equilibrium of gas, liquid and solid based on theory of phase equilibrium and principle of interfacial chemistry. The case study using this thermodynamic mathematic model is in accordance with the lab findings, by which the reason for different characteristics of wax precipitation in the processes of isobaric cooling and isothermal decompression can be explained rationally.

Key words: porous media, solid, thermodynamics, experimental data, mechanism

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