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疏水基含量和微嵌段长度对缔合聚合物溶液弹性的影响

张新民1,2,郭拥军1,2*,柳建新3,冯茹森1,胡俊2,李华兵2,赵丹4,张建5,6,吕鑫5,6   

  1. (1.西南石油大学,油气藏地质及开发工程国家重点实验室 成都 610500；
    2.四川光亚聚合物化工有限公司 南充 637005；
    3.长江大学石油工程学院 荆州 434023；4.西南油气田重庆天然气净化总厂 重庆 401200；
    5.海洋石油高效开发国家重点实验室 北京 100027；6.中海油研究总院 北京 100027)
  • 收稿日期:2012-09-28 修回日期:2012-11-07 出版日期:2013-08-10 发布日期:2013-08-10
  • 通讯作者: 郭拥军，研究员; Tel/Fax:0817-4982699; E-mail:gyfzgyj@126.com; 研究方向：油田化学品研制、开发及应用
  • 基金资助:
    国家科技重大专项（2011ZX05024-004）

Effects of Hydrophobic Groups Content and Micro-block Length on the Elasticity of Associative Polymer Solution

ZHANG Xinmin1,2, GUO Yongjun1,2*, LIU Jianxin3, FENG Rusen1, HU Jun2, LI Huabing2, ZHAO Dan4, ZHANG Jian5,6, LV Xin5,6   

  1. (1.State Key Laboratory of Geology and Production Engineering of Oil-gas Reservoir in Southwest Petroleum University,Chengdu 610500,China;
    2.Sichuan Guangya Polymer Chemical Limited Company,Nanchong 637005,China;
    3.Petroleum Engineering Institute,Yangtze University,Jingzhou 434023,China；
    4.Southwest Qil and Gas Field of Chongqing Natural Gas Purification Plant,Chongqing 401200,China;
    5.State Key Laboratory of Offshore Oil Exploitation,Beijing 100027,China;
    6.CNOOC Research Institute,Beijing 100027,China)
  • Received:2012-09-28 Revised:2012-11-07 Published:2013-08-10 Online:2013-08-10
  • Contact: GUO Yongjun

PDF

1580

被引次数

2

摘要： 研究了疏水基含量和微嵌段长度对缔合聚合物，聚(丙烯酰胺-丙烯酸钠-十六烷基二甲基烯丙基氯化铵)[P(AM-NaAA-C16DMAAC)]，弹性行为的影响规律。 研究结果表明，对于结构类似且具有相近零剪切粘度的缔合聚合物，疏水基含量越高，聚合物分子链间形成稠密网络结构的疏水缔合能力越强，其第一法向应力差N1越大，N1出现拐点处对应剪切速率越小，缔合聚合物溶液弹性越好；并且缔合聚合物溶液的弹性随着疏水微嵌段长度的增加先增加后降低，存在最佳微嵌段长度。 因此，可以通过调整分子结构有效改变缔合聚合物溶液的弹性行为。

关键词: 缔合聚合物, 弹性, 法向应力差, 粘度

Abstract: The effects of hydrophobic group content and micro-block length on viscoelastic properties of P(AM-NaAA-C16DMAAC)(AA：acrylamide， NaAA:sodium acrylate, C16DMAAC：hexadecyl trimethyl allylammonium chloride) solution were studied. The results indicated that the viscoelastic properties could be changed effectively for associative polymers with similar molecular structure and common zero shear viscosity by varying the molecular structures. When increasing the hydrophobic group content, the first normal stress difference(N1) increased and its shearing rate, a speed for N1 to reach the minimum value decreased. Furthermore, when increasing the micro-block length, the viscosities and the viscoelatic rheological properties decreased after initial increasing, so there is an optimum value for the micro-block length.

Key words: Associative polymer, Elasticity, Normal stress difference, viscosity

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