酸化堵水一体用稠化剂的室内研究
Experiment Study of Thickening Agent in the Integrated Technology of Water Plugging and Acidification
张磊 1侯吉瑞 2赵凤兰 2张建忠 1王伟 3杨济鲜1
作者信息
- 1. 中国石油大学(北京)提高采收率研究院,北京102249;中国石油大学(北京)石油工程学院,北京102249
- 2. 中国石油大学(北京)提高采收率研究院,北京102249
- 3. 中原油田采油六厂工艺研究所,山东菏泽274511
- 折叠
摘要
为了满足酸化堵水一体化技术的要求,用水溶液聚合方法,合成了丙烯酰胺(AM)、二甲基二烯丙基氯化铵(DMDAAC)、甲基丙烯酰氧基乙基三烷基氯化铵(DMC)聚合物阳离子稠化剂,产物相对分子质量为800～1200万.室内评价结果表明,稠化剂最佳加量为1.0％,在5％、10％ HCl溶液中的溶解时间为30 min.HCl加量为5％、10％时,稠化剂酸液体系黏度分别为31.0、26.8 mPa·s,在72℃回流1h后的黏度损失率分别为21.94％和32.46％；60℃时稠化剂在5％、10％盐酸中浸泡48 min后的黏度损失率分别为39.67％和36.12％.经过交联反应成胶后的黏度均大于100 Pa·s,成胶时间均低于8h.抗盐实验表明,随着矿化度的增加,稠化剂的溶解时间变长,但体系的初始黏度、成胶后的黏度、成胶时间变化较小.该稠化剂满足酸化堵水一体化技术的要求.
Abstract
In order to meet the requirements of integrated technology of water plugging and acidification, the cationic polymer thickener with 8—12 million molecular weight was synthesized in laboratory by the method of polymerization in solution using acrylamide, dimethyl diallyl ammonium chloride and methyl propenyl acyloxy ethyl three alkyl ammonium chloride. Indoor evaluation experiment results showed that the optimum dosage of thickener was of 1.0% and the soluble time of thickener was of 30 min in 5% and 10% HC1 solution. When 5% and 10% HC1 solutions were taken as a contrast to analysis the thickener performance, the initial viscosity of acid system was of 31.0 mPa · s and 26.8 mPa · s, respectively. After refluxing 1 h at 72℃, the viscosity loss rate was of 21.94% and 32.46%, and that was of 39.67% and 36.12% after soaking 48 min in acid. But after cross-linking reaction, gel viscosity was more than 100 Pa·s, and gelation time was less than 8 hrs. Salt resistance experiment results showed that the soluble time extended with increasing salinity, but the initial viscosity of acid system, the viscosity of gel and gelation time were not affected. The thickener could meet the requirements of integrated technology of water plugging and acidification.
关键词
酸化/堵水/稠化剂/性能评价Key words
acidification/water plugging/thickening agent/performance evaluation引用本文复制引用
基金项目
国家科技重大专项基金(2009ZX05009-004)
出版年
2013
NETL
NSTL
维普
万方数据