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Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
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通过Zwitterionic聚合物诱导盐凝形成以抑制协同作用的甲

Fei Gao1,2,3, Shijun Tang4, Peng Xu1,2,3

  • 1School of Petroleum Engineering, Yangtze University, National Engineering Research Center for Oil & Gas Drilling and Completion Technology, Wuhan 430100, China.

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概括

一种新的zwitterionic聚合物NDAD在深水钻探中显著抑制甲水合物 (MH) 的形成. 它的形成时间延长了4.9倍,盐通过凝网络的形成增强了它的有效性.

关键词:
深水钻探水合物抑制响应表面的方法盐诱导的物理凝结构基聚合物

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科学领域:

  • 化学工程
  • 材料科学
  • 石油工程

背景情况:

  • 在深水钻井操作中,甲水合物 (MH) 形成对流量保证构成重大挑战.
  • 有效抑制MH对于维持运营完整性和安全性至关重要.

研究的目的:

  • 合成并评估一种新型基聚合物NDAD作为甲酸盐抑制剂的性能.
  • 研究NaCl对NDAD抑制效率的协同作用.
  • 通过分子模拟阐明NDAD的抑制机制.

主要方法:

  • 合成Zwitterionic聚合物NDAD.
  • 高压反应器测试以评估水合物抑制性能.
  • 磁共振成像 (MRI) 用于可视化水合物形成.
  • 分子模拟以了解抑制机制.
  • 用于优化抑制剂剂量的响应表面方法 (RSM).

主要成果:

  • 与PVCap相比,NDAD在1.0%的重量下延长了MH形成时间的4.9倍.
  • 通过诱导凝网络形成并将粘度提高98%,NaCl (10-15%重量) 协同增强了NDAD的抑制.
  • 作为主要影响抑制功效的因素,RSM确定了NDAD剂量.

结论:

  • 对于深水应用,NDAD是一种高效的甲酸盐抑制剂.
  • 通过物理凝网络的形成,NaCl的协同作用提高了NDAD的性能,阻碍了甲扩散.
  • NDAD通过竞争性水分和质量转移阻力抑制MH的形成,提供双重作用机制.