唐永强;侯吉瑞;

• 1:中国石油大学(北京)提高采收率研究院

• 2:中国石油大学(北京)教育部油田开发重点实验室

• 3:中国石油三次采油重点实验室低渗油田提高采收率应用基础理论研究室

摘要(Abstract)：

开展砂岩CO2驱实验,研究滑脱效应与气相饱和度关系;利用束缚水测定高气相饱和度下的滑脱因子,引入强凝胶体系和高黏淀粉溶液测定低气相饱和度下的滑脱因子;通过在24.45%~100%气相饱和度条件下微观实验测定滑脱因子,分析滑脱因子随气相饱和度变化的原因.结果表明:随着气相饱和度的增加,气体滑脱效应先增加后减小,最后达到稳定.在气驱前期CO2不是连续相,滑脱效应影响较小;在气驱中期随着窜流通道数量的增加,滑脱效应不断增大;在气驱后期随着气窜通道的拓宽,滑脱效应逐渐减小.滑脱效应同时受气相饱和度和气相饱和度分布的影响.

关键词(KeyWords)：CO2驱;克努森数;气体滑脱效应;气相饱和度;相对渗透率

Abstract:

Keywords:

基金项目(Foundation):国家科技支撑计划(2012BAC26B00)

作者(Author):唐永强;侯吉瑞;

Email:

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