新疆石油地质

新疆石油地质 ›› 2002, Vol. 23 ›› Issue (4): 326-328.

• 油藏工程 • 上一篇    下一篇

挥发性油气体系相平衡中的毛细管压力作用

张茂林1, 梅海燕1, 孙良田1, 李士伦1, 吴清松2   

  1. 1.西南石油学院,四川 南充 637001;
    2.中国科学技术大学,安徽 合肥 230026
  • 收稿日期:2002-01-08 出版日期:2002-08-01 发布日期:2020-08-10
  • 作者简介:张茂林(1965-),男,四川射洪人,博士,现工作于西南石油学院博士后流动站和新疆油田分公司博士后工作站。主要从事油气田开发工程、数值模拟及流体相态研究。联系电话：0990-6238410
  • 基金资助:
    “油气藏地质及开发工程国家重点实验室”开放基金资助项目(PLN9902)

The Phase Equilibrium of a Volatile Oil System Considering the Capillary Pressure

ZHANG Mao-lin, MEI Hai-yan, SUN Liang-tian, LI Shi-lun, WU Qing-song   

  • Received:2002-01-08 Online:2002-08-01 Published:2020-08-10
  • About author:ZHANG Mao-lin (1965-), Male, Doctor, Oil and Gas Field Development Engineering, Southwest Petroleum Institute, Nanchong, Sichuan 637001, China

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摘要： 考虑多孔介质 界面现象对挥发油气体系相平衡规律和渗流规律的影响,能更真实地反映挥发油气体系在储集层多孔介质中的相态特征和渗流特征,从而更为准确地认识挥发油藏的开发动态规律,以便更合理、有效地开发该类油藏。针对我国某一挥发性油藏,利用研制的相态模拟分析软件分别对该油气体系的毛管压力泡点压力和恒组成膨胀过程中液相含量和相对体积进行了相态模拟计算,认为毛细管压力对挥发油气体系相平衡起着复杂而重要的影响。

关键词: 毛细管压力, 挥发性油藏, 相平衡, 多孔介质

Abstract: In order to really reflect the characteristics of phase behavior and percolation of a volatile of oil system in reservoir porous media, the effect of the interfacial phenomena on the phase equilibrium rule and the percolation rule should be taken into account in the porous media for a volatile oil system. As a result, the production performance of a volatile oil reservoir can be recognized well and then can be exploited effectively. The capillary pressure, the bubble point pressure, the liquid content and the relative volume of the constant compositional expansion are calculated for a practical volatile oil-gas system by using the software of phase behavior. The conclusion of the great effect of capillary pressure on this system is drawn in this paper.

Key words: capillary pressure, volatile reservoir, phase equilibrium, porous media

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