天津科技

天津科技 ›› 2023, Vol. 50 ›› Issue (1): 48-51.

• 应用技术 • 上一篇    下一篇

超支化阳离子型聚丙烯酰胺絮凝剂的研制及应用

刘建1, 于建立2, 吴文兵2, 杨金龙2, 郝志伟1, 张贵清1   

  1. 1.中国石油集团工程技术研究有限公司 天津 300451;
    2.中国石油集团海洋工程公司钻井工程事业部 天津 300451
  • 收稿日期:2023-01-09 出版日期:2023-01-25 发布日期:2023-12-27

Development and Application of Hyperbranched Cationic Polyacrylamide Flocculants

LIU Jian1, YU Jianli2, WU Wenbing2, YANG Jinlong2, HAO Zhiwei1, ZHANG Guiqing1   

  1. 1. CNPC Engineering Technology Research Co.,Ltd.,Tianjin 300451,China;
    2. Department of Drilling Engineering Technology,CNPC Offshore Engineering Co.,Ltd.,Tianjin 300451,China
  • Received:2023-01-09 Online:2023-01-25 Published:2023-12-27

摘要： 以 N,N-亚甲基双丙烯酰胺（BisAM）为交联剂,以丙烯酰胺（AM）和丙烯酰氧乙基三甲基氯化铵（DAC）为主要原料,采用溶液聚合法合成具有超支化结构的阳离子型聚丙烯酰胺絮凝剂。通过优化实验条件,确定了反应温度（55 ℃）、交联剂 BisAM、链转移剂 BCPA 的最佳用量以及 AM 与 DAC 的最佳摩尔比（17∶3）,获得了阳离子度为24.8%的超支化结构的絮凝剂JR-211。用JR-211处理埕海3-2-8井的废弃钻井液,其加量为250 mg/L时,钻井液脱水率达到61.6%,污泥沉淀含水率低至35.5%,干基回收率高达98.7%。

关键词: 絮凝剂, 超支化, 阳离子度, 聚丙烯酰胺, 钻井液

Abstract: The cationic polyacrylamide flocculant with hyperbranched structure was synthesized by solution polymerization using N,N-methylene bisacrylamide （BisAM） as crosslinking agent,acrylamide （AM） and acryloyloxyethyl trimethylammonium chloride （DAC） as main raw materials. By optimizing the experimental conditions,the reaction temperature （55 ℃）,the optimal dosages of crosslinking agent BisAM and chain transfer agent BCPA and the optimal molar ratio of AM-to-DAC （17 : 3） were determined. The hyperbranched flocculant JR-211 with cationic degree of 24.8% was obtained. The waste drilling fluid from well Chenghai 3-2-8 is treated with JR-211. When the dosage is 250 mg/L,the dehydration rate of drilling fluid reaches 61.6%,the water content of sludge sedimentation is as low as 35.5%,and the dry basis recovery rate is as high as 98.7%.

Key words: flocculant, hyperbranched structure, cationic degree, polyacrylamide, drilling fluid

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