西南石油大学学报(自然科学版) ›› 1999, Vol. 21 ›› Issue (3): 22-24.DOI: 10.3863/j.issn.1000-2634.1999.03.007

• 油气藏工程 • 上一篇    下一篇

孔隙介质中气体相变超声波测试方法研究

杨金海1 李士伦2 郭平3 孙良田2 孙雷3 邹振3
  

  1. (1.西南石油学院工业自动化系,四川南充637001; 2.西南石油学院国家重点实验室; 3.西南石油学院石油工程系)
  • 收稿日期:1999-05-10 修回日期:1900-01-01 出版日期:1999-08-20 发布日期:1999-08-20
  • 通讯作者: 杨金海

ULTRASONIC METHOD FOR DETECTING THE PHASE TRANSITION OF GAS IN POROUS MEDIA

YANG Jinhai1 LI Shilun2 SUN Liangtian2 SUN Lei3 Guo Ping3   

  1. (JOURNAL OF SOUTHWEST PETROLEUM INSTITUTE)
  • Received:1999-05-10 Revised:1900-01-01 Online:1999-08-20 Published:1999-08-20
  • Contact: YANG Jin-hai

摘要:

依据孔隙介质中的弹性波理论,以CO2气体为对象,研究了无介质和有孔隙介质两种情况下气体相态转变的超声波测试新方法。结果表明:超声波声速和衰减对CO2气体相变敏感;而孔隙介质可能一定程度地影响了CO2气体的相行为,既改变其饱和蒸汽压,也减缓其相变的突变程度。这种超声波方法有望进一步发展为研究孔隙介质中凝析气相行为的新测试技术。

关键词: 孔隙介质, 二氧化碳, 相变, 饱和压力, 超声波

Abstract:

Based on the Boit theory on acoustic propagation in porous media, ultrasonic method to determine the saturation vapor pressure of CO 2 has been investigated . As a result the speed and the attenuation of ultrasonic wave are very sensitive to the phase transitions of CO 2 in a PV cylinder both with and without porous media. Moreover it is indicated that porous media might affected the saturation vapor pressure of CO 2 to some extent.

Key words: ultrasonic wave, porous media, carbon dioxide, saturation vapor pressure, phase transition

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