聚乙二醇桥连双子季铵盐作为长效黏土稳定剂的研究  

Study on PEG-bridged gemini quaternary ammonium as long-acting clay stabilizer

作　　者：郝晶晶 张祥枫 文科 HAO Jing-jing;ZHANG Xiang-feng;WEN Ke(School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China;CNPC Chuanqing Drlling Engineering Co.,Ltd.Underground Technical Operation Company,Chengdu 610051,China;Sinopec Xinan Oilfield Service Corporation,Drlling Engineer Research Institute,Deyang 618000,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]中国石油集团川庆钻探工程有限公司井下作业公司,四川成都610051 [3]中石化西南石油工程有限公司钻井工程研究院,四川德阳618000

出　　处：《应用化工》2021年第S02期134-138,共5页Applied Chemical Industry

基　　金：西南石油大学研究生教改教研项目(18YJYY05)。

摘　　要：设计并合成了以哌啶环为阳离子中心、PEG为桥连基团的3种聚乙二醇桥连双子季铵盐(PEG-Cn),通过FT-IR谱和NMR谱对化合物结构进行表征,然后考察合成的PEG-Cn的防膨、耐水洗性能,并通过吸附量、FT-IR、MMT表面电荷、晶层间距以及润湿性等变化对化合物的作用机理进行探索。PEG-C_(8)表现出最佳的防膨性能(防膨率达到了91.5%)和耐水洗性能(经过5次水洗,防膨率累积降低1.5%),具有良好的油田应用前景。Three PEG-bridged gemini quaternary ammonium salts(PEG-Cn)with piperidine as the cationic center and PEG as the bridging group were designed and synthesized.FTIR and NMR spectra were used to characterize their structures,and then the anti-swelling and washing resistance properties of PEGCn were investigated.The adsorption capacity,FTIR,surface charge,interlaminar spacing,wettability and micro morphology of MMT were investigated to gain insight into inhibition mechanism.PEG-C_(8) showed the best anti-swelling performance(anti-swelling rate of 91.5%)and washing resistance(after 5 washings,the anti-swelling rate was cumulatively reduced by 1.5%),which suggested that PEG-C_(8) would has good oilfield application prospects.

关 键 词：PEG桥连季铵盐 长效粘土稳定剂 吸附行为 插层行为 

分 类 号：TE39[石油与天然气工程—油气田开发工程]