W-SN交联剂的合成及其交联性能研究  

Synthesis and crosslinking properties of W-SN crosslinking agent

作　　者：程海兵 张勇 孙磊[1] 李唯佳 陈志 唐聪明[1] 常丽 Haibing Cheng;Yong Zhang;Lei Sun;Weijia Li;Zhi Chen;Congming Tang;Li Chang(College of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing 400054,China;College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]重庆理工大学化学化工学院,重庆400054 [2]西南石油大学化学化工学院,四川成都610500

出　　处：《日用化学工业(中英文)》2025年第3期279-285,共7页China Surfactant Detergent & Cosmetics

基　　金：重庆市自然科学基金面上项目(cstc2019jcyj-msxm0913);重庆理工大学研究生创新项目(ycx2018254)。

摘　　要：压裂是一种对低渗油藏进行改造、增加油气产量的重要手段。压裂作业的正常进行很大程度上取决于压裂液是否具有较优的耐温耐剪切性能,而压裂液的耐温耐剪切性能又取决于交联剂。本研究以三聚氰胺、四硼酸钠、氧氯化锆作为原料,通过“一步法”合成了一种新型的W-SN交联剂,并对其交联性能进行了评价。W-SN交联剂较佳制备条件:氧氯化锆5%、三聚氰胺为1%、四硼酸钠2.5%、pH 0.5、温度90℃、反应时间4 h;其与部分水解聚丙烯酰胺(HPAM)形成凝胶的较优条件:交联时间为25 min、HPAM与W-SN质量比为100∶2.5。制备的W-SN交联剂及以其交联的HPAM凝胶具有良好的抗盐性和稳定性,可满足压裂施工要求。Fracturing is an important stimulation means for low-permeability oil reservoirs to increase their productivity.The normal operation of hydraulic fracturing largely depends on whether the fracturing fluid has excellent heat and shear resistance which in turn depends on the crosslinking agent.In this work,melamine,sodium tetraborate,and zirconium oxychloride were used as raw materials to synthesize a new W-SN crosslinking agent through“one-step method”.Under laboratory conditions,the performance of the fracturing fluid used with this crosslinking agent was evaluated.By study of the preparation process of W-SN crosslinking agent,the optimized synthesis conditions were obtained as follows:5wt%zirconium oxychloride,1wt%melamine,2.5wt%sodium tetraborate,pH of 0.5,temperature of 90℃,and reaction time of 4 hours.The optimized conditions for gelation with partially hydrolyzed polyacrylamide(HPAM)were as follows:crosslinking time,25 minutes;mass ratio of HPAM to W-SN,100∶2.5.Both W-SN crosslinker and the HPAM gel show improved salt tolerance and thermal stability,satisfying the practical requirements of hydraulic fracturing operation.

关 键 词：压裂液 有机硼锆交联剂 耐温抗剪切 合成 

分 类 号：TQ423[化学工程]