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| 两亲聚合物对O/W乳状液体系渗流的影响 |
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康万利1,魏绍龙1,胡雷雷1,季岩峰1,杨润梅1,刘述忍2,3
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(1.中国石油大学石油工程学院,山东青岛 266580;2.中国石油集团渤海钻探工程有限公司油气井测试公司,河北廊坊 065007;3.中国石油大学地质资源与地质工程博士后流动站,北京 102249)
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| 摘要: |
| 通过渗流对比实验、原子力显微观察及电镜扫描等手段分析海博型两亲聚合物对O/W乳状液渗流影响机制。结果表明:由于两亲聚合物是接枝了疏水基团的特殊结构聚合物,当其浓度超过临界缔合浓度(wCAC)时能够形成空间性的、强黏弹性的超分子网络结构,这种结构在渗流过程中与分散相乳化油滴相互影响,增强体系的黏弹效应,使渗流阻力呈现“爬坡式”上升的不稳定特征;两亲聚合物浓度超过wCAC 时,两亲聚合物相对分子质量增大使O/W乳状液体系的渗流阻力增大、渗流不稳定性增强。 |
| 关键词: 两亲聚合物 O/W乳状液体系 渗流 爬坡式 |
| DOI：10.3969/j.issn.1673-5005.2016.01.020 |
| 分类号::TE 39 |
| 基金项目:国家自然科学基金项目(20873181,6);教育部博士点基金项目(20130133110005) |
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| Influence of amphiphilic polymer on the flowing of O/W emulsion system |
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KANG Wanli1, WEI Shaolong1, HU Leilei1, JI Yanfeng1, YANG Runmei1, LIU Shuren2,3
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(1.School of Petroleum Engineering in China University of Petroleum, Qingdao 266580, China;2.Well Testing Company, Bohai Drilling and Exploration Engineering Corporation, CNPC, Langfang 065007, China;3.Geological Resources and Geological Engineering Postdoctoral Research Station in China University of Petroleum, Beijing 102249, China)
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| Abstract: |
| The effect mechanism of amphiphilic polymer on the seepage of O/W emulsion system was evaluated using contrast flow, atomic force microscopy, and electron microscope scanning techniques. The results indicate that when the HAPM concentration is above the critical associating concentration (wCAC), the tridimensional and strong viscoelasticity supramolecular networks are formed through intermolecular hydrophobic association due to the special structure of amphiphilic polymer grafted with hydrophobic group. The viscoelasticity of the system is enhanced by the interaction of supramolecular networks and emulsified oil droplet, which shows unstable characteristics of "crawling" for the flow resistance. It is also found that as the amphiphilic polymer molecular weight increases, the flow resistance of O/W emulsion system improves and becomes more fluctuant when the HAP concentration is above wCAC. |
| Key words: amphiphilic polymer O/W emulsion system flow "crawling" style |
