海洋油气高效开发全国重点实验室;天津市海洋石油难动用储量开采重点实验室;中海油田服务股份有限公司油田生产事业部;
为适应海上中低渗油藏提高采收率的需求，以生物酶、自生活化剂与改性纳米银为主要原料开发了一种新型纳米驱油体系，评价了体系粒径、界面张力性能、润湿性能及驱油效果。结果表明：纳米驱油体系的粒径分布主要在20～60 nm;当纳米驱油体系质量浓度达到100 mg/L时，油水界面张力达到6.7×10-3 mN/m,界面活性良好；纳米驱油体系可以将岩石润湿性从油湿改变成水湿，实现润湿反转；纳米驱油体系具有高波及效果、乳化作用和黏弹性作用。当纳米驱油体系质量浓度达到100 mg/L时，原油采收率在水驱效果上提高17.63%,明显优于表面活性剂与金属纳米流体。现场应用结果表明，纳米驱油技术的降水增油效果优于常规驱油技术，平均日增油量是采用常规驱油剂井的1.8倍，平均含水下降率为2.5倍，累增油量为2.8倍。
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| 下载次数 | 被引频次 | 阅读次数 |
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基本信息:
DOI：10.20075/j.cnki.issn.1003-9384.2025.03.004
中图分类号:TE53
引用信息:
[1]李胜胜,冯青,李啸南等.海上中低渗油藏高效纳米驱油体系性能评价与矿场试验[J].精细石油化工,2025,42(03):16-21.DOI:10.20075/j.cnki.issn.1003-9384.2025.03.004.
基金信息:
基金项目:中海油田服务股份有限公司科技项目(YSB22YF009)