油田配聚污水水质对聚合物溶液黏度的影响及其机理

doi:10.6040/j.issn.1672-3961.0.2015.068

山东大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (1): 80-85.doi: 10.6040/j.issn.1672-3961.0.2015.068

油田配聚污水水质对聚合物溶液黏度的影响及其机理

胡渤¹,王芳²,高宝玉^2*,徐世平²,马宝东³

1.中国石化胜利油田分公司, 山东东营 257015;
2.山东大学环境科学与工程学院, 山东济南 250100;
3. 中国石化胜利油田分公司地质科学研究院, 山东东营 257015

收稿日期:2015-03-16 出版日期:2016-02-20 发布日期:2015-03-16
通讯作者: 高宝玉(1961- ),男,山东鄄城人,教授,博导,博士,主要研究方向为水污染控制. E-mail: bygao@sdu.edu.cn E-mail:hubo755.SLYT@sinOpec.com
作者简介:胡渤(1973- ),男,陕西宝鸡人,高级工程师,硕士,主要从事油田开发工作. E-mail:hubo755.SLYT@sinOpec.com

Study on the effect and mechanism of oilfield produced water quality on reducing the viscosity of polymer solution

HU Bo¹, WANG Fang², GAO Baoyu^2*, XU Shiping², MA Baodong³

1. Shengli Oilfield Company, Sinopec, Dongying 257015, Shandong, China;
2. School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, China;
3. Academy of Geological Sciences in Shengli Oilfield Company, Sinopec, Dongying 257015, Shandong, China

Received:2015-03-16 Online:2016-02-20 Published:2015-03-16

摘要/Abstract

摘要： 通过单因子试验,分析了油田配聚污水中Na⁺、K⁺、Ca²⁺、Mg²⁺、Fe²⁺以及S^2-单独作用时对水解聚丙烯酰胺(hydrolyzed polyacrylamide, HPAM)黏度的影响。试验结果表明,上述离子均会造成HPAM溶液黏度下降,其中Fe²⁺的影响最为显著,二价阳离子的影响强于一价阳离子。通过红外光谱和扫描电镜试验结果分析,得出Na⁺、K⁺、Ca²⁺、Mg²⁺对HPAM黏度的影响是由正电荷屏蔽HPAM分子羧酸基上的负电荷,造成聚合物大分子卷曲引起的。Fe²⁺则是由还原性引发自由基链式反应,造成HPAM分子链断裂,从而使HPAM黏度下降。

关键词: 水解聚丙烯酰胺, 金属阳离子, 硫离子, 降黏机理, 二价铁离子, 黏度损失率

Abstract: According to preparing polymer solution by oilfield produced water, the effects of Na⁺, K⁺, Ca²⁺, Mg²⁺, Fe²⁺ and S^2-ions on the polymer solution viscosity were investigated and compared. Those ions had a negative impact on polymer solution viscosity, and meanwhile Fe²⁺ had the most remarkable impact. Divalent cations exerted much more effects than monovalent ones. The mechanisms of reduced HPAM viscosity were studied by IR and SEM, respectively. The results showed that Na⁺, K⁺, Ca²⁺ and Mg²⁺decreased HPAM solution viscosity by interacting with the carboxylate anions, which may lead to the polymer curl. For Fe²⁺, the viscosity degradation was attributed to a series of free-radical reactions, which could cause disintegration of the polymer chains and reduction of the viscosity.

Key words: viscosity loss ratio, metal ions, sulfide ion, hydrolyzed polyacrylamide, mechanism of viscosity degradation, ferrous iron

中图分类号:

TE357

胡渤,王芳,高宝玉,徐世平,马宝东. 油田配聚污水水质对聚合物溶液黏度的影响及其机理[J]. 山东大学学报(工学版), 2016, 46(1): 80-85.

HU Bo, WANG Fang, GAO Baoyu, XU Shiping, MA Baodong. Study on the effect and mechanism of oilfield produced water quality on reducing the viscosity of polymer solution[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2016, 46(1): 80-85.

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油田配聚污水水质对聚合物溶液黏度的影响及其机理

Study on the effect and mechanism of oilfield produced water quality on reducing the viscosity of polymer solution

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