新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (6): 673-675.

• 油藏工程 • 上一篇    下一篇

多孔介质中凝析气相变实验的新方法

李敬松, 李相方, 童敏, 程时清   

  1. 石油大学石油天然气工程学院,北京 102249
  • 收稿日期:2003-11-11 修回日期:2004-04-26 发布日期:2021-01-14
  • 作者简介:李敬松(1966-),男,天津人,在读博士研究生,油气田开发。联系电话:010-89734962
  • 基金资助:
    国家973课题,气、液、固相变渗流理论(编号200ICB209108)

A Novel Process for Phase Change Experiment of Gas Condensate in Porous Media

LI Jing-song, LI Xiang-fang, TONG Min, CHENG Shi-qing   

  1. Institute of Oil-Gas Engineering, University of Petroleum, Beijing 102249, China
  • Received:2003-11-11 Revised:2004-04-26 Published:2021-01-14

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摘要： 由于凝析气藏存在着复 杂的地下烃体系,凝析油气体系与储集层多孔介质间的相互作用,使得凝析气在多孔介质中相态变化规律十分复杂。而现有多孔介质相变实验方法中,压力、温度偏低,不能反映储集层中凝析气的相变特点。针对这一-问题,以凝析气相变理论为基础,利用气相色谱分析技术,创建了一种能真实反应凝析气在多孔介质中相变的实验新方法,在渗透率为0.011 μm2的介质与PVT简中的凝析气相变实验结果表明,低渗透介质对凝析气相态特征具有较大的影响。与目前相变实验方法相比,该方法的测试结果可靠性高、精度高。

关键词: 多孔介质, 凝析气, 相态, 相变, 气相色谱法

Abstract: In a condensate gas reservoir, there exist complex in-situ hydrocarbon systems and their interactions with porous media, which tend to. bringing about more complexity in phase behavior change in it. The available experiments of phase behavior change couldnt reflect the charac-teristics of condensate gas in real reservoirs due to their lower pressure and temperature. In view of this issue, a new ex perimental process that can actually reflect such a phase behavior change is developed by applying gas chromatographic technique and based on the theory of phase be-havior change for condensate gas, under the conditions of permeability of 0.01 lμm2 and PVT cell. The results show that greater influences of low permeability porous media on the phase behav ior characteristics of condensate gas. This process is indicated to be more reliable and accurate than available methods for phase-change experiment.

Key words: porous media, condensate gas, phase behav ior, phase change, gas chromatography

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