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温度、有效应力和含水饱和度对低渗透砂岩渗透率影响的实验研究

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  • (1.石油大学(北京)盆地与油藏研究中心,北京 102249; 2.石 油大学(北京)油气成藏机理教育部重点实验室,北京 102249;
曾平(1978-),男,四川南充人,在读博士,从事油气田开发研究工作.

收稿日期: 2004-10-08

  修回日期: 2004-11-10

  网络出版日期: 2005-02-20

基金资助

国家重大基础研究项目(973项目)子课题“气藏变形介质渗流规 律研究”(编号:2001CB209108)资助.

EXPERIMENTAL STUDY CONCERNING THE EFFECT OF TEMPERATURE, EFFECTIVE STRESS AND  WATER SATURATION ON THE PERMEABILITY OF TIGHT SANDSTONE

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  • (1.Basin & Reservoir Research Center, University of Petroleum,  Beijing 102249 , China;  2.Key Laboratory for Hydrocarbon Accumulation Mechanism of Education Ministry,  Beijing 102249, China;  3.Exploration and Development Academy, Tarim Oil Field Company, Korle 841000, China)

Received date: 2004-10-08

  Revised date: 2004-11-10

  Online published: 2005-02-20

摘要

为了全面评价温度、有效应力和含水饱和度的变化对砂岩渗透率的影响,实验测定了在不同条件下低渗透砂岩渗透率的变化规律。根据实验结果定性地分析了温度、有效应力和含水饱和度对低渗透砂岩渗透率的影响以及三者之间的相互作用关系。实验结果表明:在有效应力相对较小时温度对渗透率的影响较大,而随着有效应力的增大其作用逐渐减小;随着含水饱和度的增加,温度对渗透率的影响增大;渗透率与有效应力近似呈指数关系变化,但随着温度和含水饱和度的增加需要作校正处理;含水饱和度越高岩石渗透率越低,且随着有效应力的增加,渗透率下降幅度呈递增的趋势,而温度的增加使得含水饱和度越高的砂岩渗透率下降越严重。

本文引用格式

曾平,赵金洲,李治平,郭建春,杨满平 . 温度、有效应力和含水饱和度对低渗透砂岩渗透率影响的实验研究[J]. 天然气地球科学, 2005 , 16(1) : 31 -34 . DOI: 10.11764/j.issn.1672-1926.2005.01.31

Abstract

In order to generally evaluate the effect of temperature, effective stress and w ater-saturate to the permeability of tight sandstone, it measured the permeabil ity of tight sandstone at various conditions. It qualitatively analyzed the effe ct of temperature, effective stress and water-saturate to the permeability of t ight sandstone and relationship of them. The experimental result shows that temp erature has greater effect on permeability at lower effective stress level but d ecreases with the increasing of effective stress. Higher of water saturation of  sandstone, greater effect of temperature on permeability. The relationship betwe en permeability and effective stress is approximatively exponent but is necessar y to correct at high temperature and water-saturate level. Water-saturate is o ne of key factors that have great effect on permeability and the permeability gr eatly decreases when effective stress increased. 

参考文献

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