刘子铭,葛际江,李隆杰,师小娟,陶正武,范家伟,黄兰

• 1:中国石油大学(华东)石油工程学院
• 2:中国石油塔里木油田公司勘探开发研究院

摘要(Abstract)：

为深入研究起泡剂配方为0.4%S11+1%粉煤灰的三相泡沫性能及驱油机理，使用Waring搅拌法评价了其耐温耐油性，通过微观驱油实验对比分析了三相泡沫的驱油机理并用岩心实验进行验证。结果表明，相较于S11泡沫，三相泡沫具有更好的耐温性，在90℃、25×10~4 mg/L条件下的稳定时间长达166 min;显微镜观察发现，粉煤灰颗粒形成的保护层能有效提高液膜强度并阻止油相与气泡直接接触。微观实验发现粉煤灰的加入不但提高了泡沫体系的黏度及耐剪切性，同时增加了泡沫表面粗糙度，强化了泡沫对孔道内壁附着油和末端残余油的驱动能力。三相泡沫的提采效果较S11泡沫提高13.5%。

关键词(KeyWords)： 驱油;粉煤灰;三相泡沫;高温高盐;微观模型;采收率

Abstract:

Keywords:

基金项目(Foundation): 中石油重大科技项目“塔里木盆地深层油气高效勘探开发理论及关键技术研究”(ZD2019-183-007)

作者(Author): 刘子铭,葛际江,李隆杰,师小娟,陶正武,范家伟,黄兰

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