温敏聚合物/纳米SiO_(2)复合材料的制备与性能评价  

Synthesis and Solution Properties of Temperature-sensitive Polymer/Nano-SiO_(2) Composite N-AMPA

作　　者：陈璐鑫 卓绿燕[4] ALAIN Pierre Tchameni 吕军贤 谢彬强[1,2,3] CHEN Luxin;ZHUO Lüyan;ALAIN Pierre Tchameni;LYU Junxian;XIE Binqiang(School of Petroleum Engineering,Yangtze University,Wuhan,Hubei 430100,P R of China;Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering,Wuhan,Hubei 430100,P R of China;National Engineering Laboratory of Oil and Gas Drilling Technology,Wuhan,Hubei 430100,P R of China;Dagang Oilfield Petroleum Engineering Research Institute,Tianjin 300280,P R of China)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]油气钻采工程湖北省重点实验室,湖北武汉430100 [3]油气钻井技术国家工程实验室防漏堵漏研究室,湖北武汉430100 [4]大港油田石油工程研究院,天津300280

出　　处：《油田化学》2023年第1期12-18,共7页Oilfield Chemistry

基　　金：国家自然科学基金项目“温敏聚合物纳米复合材料对高温无固相钻井液流变性的调控机理”(项目编号51974034)。

摘　　要：由于目前大部分温敏增稠剂的耐温抗盐性能较差,难以适用于高深储层。以自制温敏单体(PADA)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、N,N-亚甲基双丙烯酰胺(MBA)和改性纳米SiO_(2)颗粒(N-np)为原料,通过原位聚合法制备了一种温敏聚合物/纳米SiO_(2)复合材料N-AMPA。采用正交实验优化了N-AMPA的合成条件,通过傅里叶变换红外光谱(FT-IR)、核磁共振氢谱(^(1)H-NMR)等确定了N-AMPA的分子结构,考察了N-AMPA溶液的温敏增稠性能、耐温抗盐性能和抗剪切性能。研究结果表明,N-AMPA溶液在65~180℃内具有温敏增稠性能,最大增稠率达94%;N-AMPA溶液在200℃高温老化后黏度保留率为68%;在20%NaCl盐水溶液中,黏度保留率为63%;在剪切速率为1021 s^(-1)时其溶液黏度达50 mPa·s。与温敏聚合物AMPA相比,N-AMPA表现出良好的耐温抗盐性、较强的抗剪切性能。Most of the current temperature-sensitive thickeners are not suitable for high depth reservoirs due to their poor temperature and salt resistance.A self-prepared thermo-sensitive macromonomer(PADA),2-acrylamide-2-methylpropanesulfonic acid(AMPS),N,N-methyl bisacrylamide(MBA)and modified nano-silica(N-np)were used to prepare a kind of nano-silica-thermo-thickening composite N-AMPA by in-situ polymerization.The synthesis conditions of N-AMPA were optimized by orthogonal experiment.The molecular structure of N-AMPA was evidenced by FT-IR and ^(1)H-NMR,and the thermo-thickening behavior,high temperature stability and shear resistance of N-AMPA solution was investigated.The results showed that N-AMPA possessed showed thermo-thickening behavior property in the temperature range of 65-180℃,the maximum thickening rate was 94%.The viscosity retention of N-AMPA solution was 68%after high temperature aging at 200℃.In 20%NaCl saline solution,the viscosity retention rate was 63%.When the shear rate was 1021 s^(-1),the solution viscosity reached up to 50 mPa·s.Compared with temperature-sensitive polymer AMPA solution,N-AMPA showed good temperature resistance,salt resistance and strong shear resistance.

关 键 词：纳米SiO_(2)改性 温敏增稠 耐温抗盐 抗老化 抗剪切 

分 类 号：TE39[石油与天然气工程—油气田开发工程] TQ316.33[化学工程—高聚物工业]