表面活性剂驱油机理实验探究与动力学模拟 |
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引用本文: | 吕锦涛 赵会军 田浩 吕晓方 赵煜. 表面活性剂驱油机理实验探究与动力学模拟[J]. 石油炼制与化工, 2019, 50(10): 18-24 |
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作者姓名: | 吕锦涛 赵会军 田浩 吕晓方 赵煜 |
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作者单位: | 1. 常州大学石油工程学院2. 中国石油辽河油田公司钻采工艺研究院 |
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基金项目: | 江苏省研究生科研与实践创新计划项目;渗吸驱油型滑溜水主剂筛选及实验评价方法研究 |
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摘 要: | 选取了3种表面活性剂:十二烷基磺酸钠(SDS)、三甲基十六烷基溴化铵(CTMAB)和聚甘油脂肪酸酯(PGFE),通过测试表面活性剂对辽河原油的流变性、界面张力、驱油效果等的影响,借助分子模拟手段探究了多元体系中表面活性剂的驱油行为。结果表明:表面活性剂改善原油流变性能力由高到低的顺序为SDS>PGFE>CTMAB;在质量分数为0.3%时,SDS体系的界面张力最低,为1.03×10-2 mN/m,且驱油效率高达87.3%;分子模拟中各表面活性剂降低原油密度的能力由小到大的排序为:CTMAB
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关 键 词: | 表面活性剂 流变性 界面张力 驱油效果 分子动力学 |
收稿时间: | 2019-02-27 |
修稿时间: | 2019-06-03 |
EXPERIMENTAL STUDY AND DYNAMIC SIMULATION OF SURFACTANT ENHANCED OIL RECOVERY MECHANISM |
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Abstract: | Three surfactants were selected: sodium dodecyl sulfate (SDS), cetrimonium bromide (CTMAB), and polyglycerol fatty acid ester (PGFE) for evaluation of oil rheology, interfacial tension and oil-displacement effect on Liaohe crude oil. The molecular simulation was used to explore the oil-displacement of surfactants in multi-systems. The results showed that: (1) The order in which surfactants improved the rheological properties of crude oil from high to low is SDS>PGFE>CTMAB; (2) When the mass fraction of surfactant added was 0.3%, SDS had the lowest interfacial tension of 1.03×〖10〗^(-2)mN/ m, and the oil-displacement efficiency was as high as 87.3%; (3) The order of density reduction ability in molecular simulation was: CTMAB
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Keywords: | surfactant rheological characteristic interfacial tension oil displacement effect molecular dynamics |
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