聚合物纳米复合增黏剂的制备
Preparation and Performance Evaluation of Polymer Nanocomposite Viscosifier
宋祥先 1王本利 2仇恒彬 3慕熙荣 2谢彬强4
作者信息
- 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. 长江大学石油工程学院,湖北 武汉 430100;油气钻采工程湖北省重点实验室,湖北 武汉 430100
- 折叠
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SiO2 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 24h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 16h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.
Abstract
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 nano-SiO2 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/SiO2改性/增黏性能/耐温抗盐Key words
Composite material/SiO2 modification/Viscosifier/Temperature and salt tolerant引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据