| 界面张力特征对三元复合驱油效率影响的实验研究 |
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| 引用本文： | 李华斌,陈中华.界面张力特征对三元复合驱油效率影响的实验研究[J].石油学报,2006,27(5):96-98. |
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| 作者姓名： | 李华斌 陈中华 |
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| 作者单位： | 1. 西南石油大学油气藏地质及开发工程国家重点实验室, 四川, 成都, 610500;2. 西南油气田分公司勘探开发研究院, 四川, 成都, 610041 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 分别采用了油水平衡界面张力和瞬时动态界面张力为1mN/m、0.1mN/m、0.01mN/m和0.001mN/m的4种体系进行了岩心驱油试验.结果表明,在大庆油田三元复合驱中,油水动态界面张力最低值是影响驱油效果的重要因素,而不是平衡界面张力.动态界面张力最低值达到0.01mN/m时,体系的驱油效果与界面张力平衡值达到0.001mN/m时基本相同.因此,可以大幅度降低三元复合体系中碱的用量,甚至可以不用碱.此外,还可以降低对表面活性剂的苛刻要求,扩大表面活性剂的种类和范围.
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| 关 键 词： | 三元复合驱 表面活性剂 平衡界面张力 动态界面张力 岩心驱油实验 驱油效率 |
| 文章编号： | 0253-2697（2006）05-0096-03 |
| 收稿时间： | 2005-11-01 |
| 修稿时间： | 2005-12-11 |
Characteristics of interfacial tension and oil displacement efficiency with alkaline-surfactant-polymer flooding technology |
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| Li Huabin,Chen Zhonghua.Characteristics of interfacial tension and oil displacement efficiency with alkaline-surfactant-polymer flooding technology[J].Acta Petrolei Sinica,2006,27(5):96-98. |
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| Authors: | Li Huabin Chen Zhonghua |
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| Affiliation: | 1. State Key Laboratory for Oil-Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;2. Exploration and Development Research Institute, Southwest Oil-gas Field Company, Chengdu 610041, China |
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| Abstract: | Four systems for dynamic and equilibrium interfacial tensions(IFT) with different IFT values of 1mN/m,0.1mN/m,(0.01)mN/m and 0.001mN/m in core oil-displacement test were investigated.The results demonstrate that the dynamic interfacial tension is the key factor affecting oil recovery with alkaline-surfactant-polymer(ASP) flooding technology.The oil displacement efficiency for the minimum dynamic IFT value of 0.01mN/m is almost equal to that for equilibrium IFT value of 0.001mN/m.This conclusion implies that the alkalinity in ASP solutions could be decreased greatly or reduced to zero.Almost commercial surfactants could be used in ASP flooding technology. |
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| Keywords: | alkaline-surfactant-polymer flooding technology surfactant equilibrium interracial tensiom dynamic interracial tension core oil-displacement test oil displacement efficiency |
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