金属阳离子对聚丙烯酰胺溶液黏度的影响及其降黏机理研究

李美蓉; 柳智; 宋新旺; 马宝东; 张文

金属阳离子对聚丙烯酰胺溶液黏度的影响及其降黏机理研究

1.
中国石油大学(华东) 理学院, 山东青岛 266555;
2.
胜利油田分公司地质科学研究院, 山东东营 257015

详细信息

通讯作者:
李美蓉, E-mail:lmrong888@163.com; Tel:18754263315。

中图分类号: TE357
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出版历程
- 收稿日期: 2011-02-09
- 修回日期: 2011-05-13
- 刊出日期: 2012-01-31

Effect of metal ions on the viscosity of polyacrylamide solution and the mechanism of viscosity degradation

1.
College of Petroleum, China University of Petroleum (East China), Qingdao 266555, China;
2.
Institute of Geological Sciences, Shengli Oilfield Company, Dongying 257015, China

摘要

摘要: 聚丙烯酰胺(HPAM)是油田常用的驱油聚合物,用油田污水配制HPAM溶液易导致其黏度明显降低,影响驱油效果。依据埕东油田污水实测的各种金属阳离子含量来配制HPAM溶液,测得各金属阳离子对其黏度影响由大到小的顺序为:Na⁺>Fe²⁺>Ca²⁺>K⁺>Mg²⁺;通过红外光谱和扫描电镜分析金属阳离子导致HPAM溶液降黏的机理,Na⁺、K⁺、Ca²⁺、Mg²⁺主要是通过与HPAM链上的羧酸根阴离子静电引力相互作用,降低HPAM分子表面原有的电荷密度,造成分子链卷曲,同时减弱了极性基团的溶剂化能力,释放大量的"束缚水",从而使黏度显著降低;Fe²⁺离子主要是与水中溶解氧共同作用,引发自由基反应,导致HPAM骨架水解断裂,致使黏度显著降低。
- 聚丙烯酰胺 /
- 黏度 /
- 金属阳离子 /
- 降黏机理 /
- 矿化度
Abstract: Hydrolyzed polyacrylamide (HPAM) is a kind of polymer used for displacement of reservoir oil, while the oilfield sewage used to prepare HPAM may reduce its viscosity and impact the displacement efficiency. In this work, the HPAM solution was prepared according to the metal ions composition in Chengdong Oilfield sewage and the effect of metal ions on the viscosity of HPAM solution was investigated. It was found that the influencing extent of various metal ions on the viscosity of HPAM solution is in the order of Na⁺ > Fe²⁺ > Ca²⁺ > K⁺ > Mg²⁺. IR and SEM characterization results suggested that Na⁺, K⁺, Ca²⁺ and Mg²⁺ interact with the carboxylate anions, which may decrease the HPAM molecular charge density, make the polymer curl, reduce the solvation ability of polar groups, and release a large number of "bounded" water; these lead to the degradation of HPAM solution viscosity. On the other side, the viscosity degradation by Fe²⁺ is attributed to its interaction with oxygen in sewage, which initiates a free-radical reaction and causes the disintegration of the polymer chains.
- hydrolyzed polyacrylamide /
- viscosity /
- metal ions /
- mechanism of viscosity degradation /
- salinity

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参考文献(10)

庞丽丽. 三次采油化学驱油技术发展现状[J]. 内蒙古石油化工, 2010, (8):142-145. (PANG Li-li. Oment of enhance oil recovery in China[J]. Inner Mongolia Petrochemical Industry, 2010, (8):142-145.)

赵修太, 王增宝, 邱广敏, 信艳永, 倪洁. 部分水解聚丙烯酰胺水溶液初始黏度的影响因素[J]. 石油与天然气化工, 2009, 38(3):231-237. (ZHAO Xiu-tai, WANG Zen-bao, QIU Guang-min, XIN Yan-yong, NI Jie. Study on influence factors of the initial viscosity of HPAM solution[J]. Chemical Engineering of Oil & Gas, 2009,38(3):231-237.)

DONG Zhao-xia,LIN Mei-qin, XIN Jian, LI Ming-yuan. Influence of dissolved oxygen content on oxidative stability of linked polymer solution[J]. Petroleum Science, 2009, 68(4):421-425.

王宝辉, 张帆, 吴红军, 董晶, 盛海霞. 机械剪切作用对聚合物溶液黏度的影响[J]. 齐齐哈尔大学学报(自然科学版), 2010, 26(2):37-40. (WANG Bao-hui, ZHANG Fan, WU Hong-jun, DONG Jing, SHENG Hai-xia. Mechanical shearing effect on the viscosity of the polymer solution[J]. Journal of Qiqihar University, China (Natural Science Edition), 2010, 26(2):37-40.)

杜涛. 聚丙烯酰胺的降解研究进展[J]. 化工文摘, 2008, (2):53-54. (DU Tao. Advances in the research of PAM-degradation[J]. China Chemicals, 2008, (2):53-54.)

康万利, 孟令伟, 牛井岗, 徐典平. 矿化度影响HPAM溶液黏度机理[J]. 高分子材料科学与工程, 2006, 22(5):175-179. (KANG Wan-li, MENG Ling-wei, NIU Jing-gang, XU Dian-ping. Mechanism of the effect of salinity on HPAM solution viscosity[J]. Polymer Materials Science & Engineering, 2006, 22(5):175-179.)

周恩乐, 李虹, 薄淑琴, 郝克君, 杨红, 尙振平, 方天如. 聚丙烯酰胺的形态结构研究[J]. 高分子学报, 1991, (1):51-56. (ZHOU En-le, LI Hong, BO Shu-qin, HAO Ke-jun, YANG Hong, SHANG Zhen-ping, FANG Tian-ru. Morphology of polyacrylamide[J]. Acta Polymerica Sinica, 1991, (1):51-56.)

包木太, 陈庆国, 王娜, 郭省学, 李希明. 油田污水中聚丙烯酰胺(HPAM)的降解机理研究[J]. 高分子通报, 2008, (2):1-9. (BAO Mu-tai, CHEN Qing-guo, WANG Na, GUO Sheng-xue, LI Xi-ming. Study on the mechanism of HPAM-degradation in the sewage of oilfield[J]. Chinese Polymer Bulletin, 2008,(2):1-9.)

宋新旺. 埕东油田泡沫复合驱先导试验污水对聚合物溶液黏度影响因素研究[J]. 石油钻采工艺,2008; 30(4):88-91. (SONG Xin-wang. Effect of sewage on polymer solution viscosity:Pilot test of foam combination fooding in Chengdong[J]. Oilfeld Oil Drilling & Production Technology, 2008, 30(4):88-91.)

姜维东, 张可, 徐新霞, 卢祥国. 曝氧和厌氧污水聚合物溶液黏度差异及机理分析[J]. 油气地质与采收率, 2007, 14(6):69-71. (JIANG Wei-dong, ZHANG Ke, XU Xin-xia, LU Xiang-guo. Viscosity differences and mechanism analysis of the wasted water-polymer solution in aerobic and anaerobic environments[J]. Petroleum Geology and Recovery Effciency, 2007, 14(6):69-71.)

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