β-环糊精聚合物/疏水缔合聚合物主客体相互作用强化采油性能评价

Performance Evaluation of Enhanced Oil Recovery by Host-Guest Interaction of β-Cyclodextrin Polymer/Hydrophobically Associative Polymer.

作者信息

Li Xi, Ye Zhongbing, Luo Pingya

机构信息

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China.

School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 610031, China.

出版信息

Molecules. 2024 Dec 30;30(1):109. doi: 10.3390/molecules30010109.

DOI:10.3390/molecules30010109

PMID:39795165

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11721016/

Abstract

In this work, a hydrophobically associative polymer (HAP) was mixed with β-cyclodextrin and epichlorohydrin polycondensate (β-CDP) in an aqueous solution to enhance the intermolecular interaction through host-guest inclusion between hydrophobes and cyclodextrins. Results showed that the host-guest interaction improved the thickening ability and viscoelasticity of the HAP solution and maintained its shear thinning behavior. The host-guest inclusion system demonstrated special viscosity-temperature curves and variable activation energy. Enhanced oil recovery (EOR) performance tests showed that the oil increment produced by the host-guest inclusion system was 5.5% and 9.3% higher than that produced by the HAP and the partially hydrolyzed polyacrylamide solution, respectively. Compared with pure HAP, β-CDP/HAP has a better comprehensive performance and is more attractive for EOR in high-temperature reservoirs.

摘要

在这项工作中，将一种疏水缔合聚合物（HAP）与β-环糊精和环氧氯丙烷缩聚物（β-CDP）在水溶液中混合，通过疏水基团与环糊精之间的主客体包合作用增强分子间相互作用。结果表明，主客体相互作用提高了HAP溶液的增稠能力和粘弹性，并保持了其剪切变稀行为。主客体包合体系表现出特殊的粘度-温度曲线和可变的活化能。提高采收率（EOR）性能测试表明，主客体包合体系产生的原油增量分别比HAP和部分水解聚丙烯酰胺溶液产生的原油增量高5.5%和9.3%。与纯HAP相比，β-CDP/HAP具有更好的综合性能，对高温油藏的EOR更具吸引力。