不同聚交比的弱凝胶交联反应动力学模型研究  

Kinetic model study of weak gel crosslinking reaction with different polymerization and crossover ratios

作　　者：杨忠全 罗陶涛 李俊[1] 程婷婷 曹剑楠 YANG Zhongquan;LUO Taotao;LI Jun;CHENG Tingting;CAO Jiannan(School of Petroleum and Natural Gas Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]重庆科技学院石油与天然气工程学院,重庆401331

出　　处：《石油化工应用》2022年第10期19-23,32,共6页Petrochemical Industry Application

基　　金：重庆科技学院研究生科技创新项目,项目编号:YKJCX2120125;重庆市自然科学基金面上项目“页岩气有机/无机杂化弱凝胶水基钻井液流变调控与携砂机理研究”,项目编号:cstc2020jcyj-msxmX0573;重庆市教育委员会科学技术研究项目“基于核磁共振技术的互穿聚合物网络在多孔介质中的渗流特征研究”,项目编号:KJQN-201901540。

摘　　要：以部分水解聚丙烯酰胺(HPAM)为主剂,柠檬酸铝(C_(6)H_(5)AlO_(7))为交联剂,硫脲(H_(2)NCSNH_(2))为稳定剂,研究了弱凝胶体系的交联反应动力学,着重分析了交联剂C_(6)H_(5)AlO_(7)用量和HPAM的配比对交联反应的影响。结果表明,化学交联弱凝胶体系的交联反应为一级反应,体系中C_(6)H_(5)AlO_(7)的用量在一定程度上阻碍交联反应的进行,但未对动力学参数产生较大影响。动力学模型中的PFO模型、PSO模型、Elovich模型和Ritchie's equation可以较好拟合交联动力学数据,增加了衡量交联反应动力学的评价手段,为实验所得交联反应动力学数据的可靠性提供更多的理论验证。With partially hydrolyzed polyacrylamide(HPAM)as the main agent,aluminum citrate(C_(6)H_(5)AlO_(7))as the crosslinking agent and thiourea(H_(2)NCSNH_(2))as the stabilizer,the crosslinking reaction kinetics of weak gel system was studied,and the effects of the amount of crosslinking agent(C_(6)H_(5)AlO_(7))and the proportion of HPAM on the crosslinking reaction were emphatically analyzed.The results showed that the crosslinking reaction of the weak chemical crosslinked gel system was a first-order reaction,and the amount of C_(6)H_(5)AlO_(7) in the system hindered the crosslinking reaction to some extent,but had no significant effect on the kinetic parameters.PFO model,PSO model,Elovich model and Ritchie's equation in the kinetic model can fit the crosslinking kinetic data,increase the evaluation means to measure the crosslinking reaction kinetics, and provide more theoretical verification for the reliability of the crosslinking reaction kinetic data obtained from the experiment.

关 键 词：柠檬酸铝 部分水解聚丙烯酰胺 交联反应 动力学 

分 类 号：TE319[石油与天然气工程—油气田开发工程]