西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (6): 18- 21.DOI: 10.3863/j.issn.1000-2634.2002.06.006

• 石油工程 • 上一篇    下一篇

多孔介质中油气体系相平衡规律研究

张茂林1 梅海燕1 李闽1 孙良田1 李士伦1 吴清松2
  

  1. 1. 西南石油学院石油工程学院,四川南充637001 ; 2. 中国科学技术大学,安徽合肥230026
  • 收稿日期:2002-02-21 修回日期:1900-01-01 出版日期:2002-12-20 发布日期:2002-12-20
  • 通讯作者: 张茂林

THE PHASE EQUILIBRIUM OF THE OILOGAS SYSTEM IN THE POROUS MEDIA

ZHANG Ma-lin MEI Hai-yan LI Min LI Shi-lun WU Qing-song   

  1. Southwest Petroleum Institute , Nanchong Sichuan 637001 , China
  • Received:2002-02-21 Revised:1900-01-01 Online:2002-12-20 Published:2002-12-20
  • Contact: ZHANG Mao lin

摘要: 油气体系和储层多孔介质是一个相互作用的系统,当地层压力低于饱和压力时,储层中同时存在气、液、固(指岩石) 三相。在多孔介质中,由于孔隙半径小,因而毛细管压力应予以考虑。在建立了考虑毛细管压力的相平衡计算模型之后,针对二个凝析气藏,一个黑油油藏和一个挥发油藏,分别对其油气体系的毛细管压力、饱和压力和恒组成膨胀过程中液相含量进行了相态模拟计算,并总结出毛细管压力对油气体系相平衡的影响规律。

关键词: 多孔介质, 油气藏, 相平衡, 毛细管压力

Abstract: The oilOgas system and the porous media are interaction system. The three phases of vapor , liquid and solid (rock) will coOexist in the porous media when the pressure is under the sat uration pressure. Since the pore radius is very tiny in the porous media , the capillary pressure should be considered. The phase equilibrium calculation model concerning capillary pressure is es
tablished in this paper. The capillary pressure , the saturation pressure , and the liquid content of the constant compositional expansion are calculated by using this model for one black oil reservoir , one volatile oil reservoir and two gas condensate reservoirs. The conclusion of the capillary pressure effect on the ilOgas system is summerized at the end of this paper.

Key words: porous media, oil and gas reservoir, phase equilibrium, capillary pressure

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