聚合物纳米复合增黏剂的制备  

Preparation and Performance Evaluation of Polymer Nanocomposite Viscosifier

作　　者：宋祥先 王本利 仇恒彬 慕熙荣 谢彬强[1,4] SONG Xiangxian;WANG Benli;QIU Hengbin;MU Xirong;XIE Binqiang(School of Petroleum Engineering,Yangtze University,Wuhan,Hubei 430100;Yellow River Drilling Corporation of Sinopec Shengli Oilfield Service Corporation,Dongying,Shandong 257513;Drilling Technology Research Institute of SINOPEC Shengli Petroleum Engineering Co.Ltd,Dongying,Shandong 257000;Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering,Wuhan,Hubei 430100)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]中国石化胜利石油工程有限公司黄河钻井总公司,山东东营257513 [3]中石化胜利石油工程有限公司钻井工艺研究院,山东东营257000 [4]油气钻采工程湖北省重点实验室,湖北武汉430100

出　　处：《钻井液与完井液》2024年第6期736-741,共6页Drilling Fluid & Completion Fluid

基　　金：长江大学·非常规油气省部共建协同创新中心开放基金资助项目“页岩地层用温敏缔合型封堵剂研制及其机理研究”(UOG2024-11)。

摘　　要：针对目前常用的钻井液增黏剂在高温高盐下增黏性能较差,无法适用于高温深部储层的问题,以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、N,N-二乙基-2-丙烯酰胺(DEAM)、N,N-亚甲基双丙烯酰胺(MBA)和改性纳米SiO_(2)颗粒(E-np)为原料,通过原位聚合制备了一种高温增稠性能良好的纳米复合材料E-APNC。通过正交实验对合成条件进行了优化,使用傅里叶变换红外光谱(FT-IR)确定了E-APNC的分子结构,考察了E-APNC的增黏性能、抗剪切性能、耐温性能和耐温抗盐性能。通过24 h的静置实验,考察了nps、N-np、和E-np的分散性,E-np具有更好的分散性。研究结果表明,在常温下1%加量的E-APNC溶液表观黏度达66 mPa·s,与APNC相比具有良好的增黏性能;加量为1%、剪切速率为1021 s^(−1)的E-APNC溶液黏度可达60 mPa·s;在20%NaCl溶液中,200℃老化16 h后,E-APNC溶液的表观黏度保持率达65%。与聚合物APNC和N-APNC相比,E-APNC具有更好的抗剪切性能与耐温抗盐性能。In response to conventional viscosifiers exhibiting poor performance under high temperature and high salt conditions rendering them ineffective for high-temperature deep reservoirs,this study prepared a novel nanocomposite(E-APNC)via in situ polymerization using 2-acrylamido-2-methylpropanesulfonic acid,N,N diethylacrylamide,N,N methylenebisacrylamide and nanoSiO2 particles(E-np)as raw materials.E-APNC synthetic condition was optimized by orthogonal experimentation,and the molecular structure of E-APNC was evidenced by FT-IR,E-APNC polymer fluid displayed good thickening performance at high temperatures with excellent rheological parameter such as viscosity increase,shear resistance,thermal stability,and salt tolerance.Through the 24 h static experiment,E-np has better dispersibility compared with nps and N-np.At 1%E-APNC,the apparent viscosity at room temperature reached 66 mPa·s,whereas the viscosity shear rate reached 60 mPa·s at high shear rate of 1021 s^(−1),showcasing the excellent viscosity increasing ability and good anti-shear performance of E-APNC.The apparent viscosity retention rate of the drilling fluid was 65%after aging at 200℃for 16 h under 20%NaCl concentration probing its good temperature and salt resistance performance.Compared with polymer APNC and N-APNC,E-APNC showed strong shear resistance and good temperature resistance,salt resistance.

关 键 词：复合材料 SiO_(2)改性 增黏性能 耐温抗盐 

分 类 号：TE254.4[石油与天然气工程—油气井工程]