Xu Tao, Mao Jincheng, Zhang Yang, Yang Xiaojiang, Lin Chong, Du Anqi, Zhang Heng, Zhang Quan, Mao Jinhua
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China.
Polymers (Basel). 2021 Sep 1;13(17):2972. doi: 10.3390/polym13172972.
A quaternary polymer (HGP) was prepared by the free-radical polymerization of acrylamide, acrylic acid, maleic anhydride functionalized -cyclodextrin (MAH--CD), and N-(3-methacrylamidopropyl)-N, N-dimethylnaphthalen-1-aminium chloride (NAP). It was found that host-guest behavior occurred most effectively at a molar rate of NAP and CD with 1:1, which exhibited better solubility than hydrophobically associative polymer. Moreover, the as-prepared polymer has superior salt tolerance, shear resistance, and viscoelasticity due to host-guest strategy. More importantly, the HGP solution simulates the distribution of formation water in the Bohai SZ1-1 oilfield has good rheological properties at 120 °C. All results show that the proposed polymer could be a competitive candidate in oilfield applications such as fracturing fluids, displacement fluids, and drilling fluids.
通过丙烯酰胺、丙烯酸、马来酸酐功能化的β-环糊精（MAH-β-CD）和N-(3-甲基丙烯酰胺基丙基)-N,N-二甲基萘-1-氯化铵（NAP）的自由基聚合反应制备了一种四元聚合物（HGP）。发现当NAP与环糊精的摩尔比为1:1时，主客体行为最为有效，其溶解性比疏水缔合聚合物更好。此外，由于主客体策略，所制备的聚合物具有优异的耐盐性、抗剪切性和粘弹性。更重要的是，模拟渤海SZ1-1油田地层水分布的HGP溶液在120℃时具有良好的流变性能。所有结果表明，所提出的聚合物在压裂液、驱替液和钻井液等油田应用中可能是一个有竞争力的候选者。
