王壮壮,李兆敏,李松岩

• 1:中国石油大学(华东)石油工程学院

摘要(Abstract)：

为了进一步揭示影响泡沫封堵性能的根本原因,首先通过泡沫驱替实验研究了温度对泡沫封堵性能的影响,然后利用界面流变仪分析了界面参数随温度的变化,在此基础上,建立起泡沫封堵性能与界面性质之间的联系,考察界面性质对泡沫封堵性能的影响。结果表明:当温度由20℃升高到80℃时,泡沫封堵能力先增后减,40℃时达到最大,80℃时阻力因子减小80%以上,有效倍数降低至40℃时的六分之一。相同温度变化范围内,平衡界面张力先减后增,40℃时界面张力最小为28.6 m N×m~(-1),而扩张模量和界面弹性模量先增后减,界面黏性模量则逐渐减小,40℃时工作频率0.1 Hz对应的最大扩张模量、界面弹性模量和界面黏性模量分别为9.24、8.74、2.97 m N×m~(-1)。界面流变性表征了泡沫液膜性质,封堵性能好的泡沫应同时具有一定的高黏度和良好的弹性,界面弹性模量和界面黏性模量共同影响泡沫封堵性能;界面张力与泡沫封堵性能呈负相关关系,界面张力越小,越有利于泡沫再生,并对应越大界面模量,因而泡沫封堵性能越好。

关键词(KeyWords)： 泡沫;封堵性能;界面性质;扩张模量;界面弹性模量;界面黏性模量

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51274228);; 教育部博士点基金(20120133110008);; 中央高校基本科研业务费专项资金资助项目(24720142043)

作者(Author): 王壮壮,李兆敏,李松岩

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