摘要
以油水界面法合成纳米二氧化锆交联剂,采用SEM、FTIR和紫外-可见漫反射光谱对合成的纳米二氧化锆进行表征,通过单因素实验考察了温度、时间等因素对纳米四方型二氧化锆(t-ZrO2)合成的影响,将合成的纳米二氧化锆配成1.5%(w)分散液,按1.5%(φ)的体积比交联0.6%(w)羟丙基胍胶形成交联冻胶,对形成的交联冻胶进行表征及性能测试。实验结果表明,纳米t-ZrO2的最佳制备条件为100℃、24h、十二烷基硫酸钠为表面活性剂、环己烷为油相、矿化剂为4 mol/L氢氧化钠溶液;制得纳米二氧化锆为t-ZrO2,表面具有大量的羟基;形成的交联冻胶具有良好的挑挂性和耐温耐性,在100℃,170 s^-1)的条件下剪切120min,冻胶压裂液体系黏度保持在100 mPa·s左右,破胶性、残渣含量和悬砂性均满足工作要求。
Nano-ZrO2 was synthesized by oil-water interface method as crosslinking agent. The synthesized nano-ZrO2 was characterized by SEM,FTIR and UV-Vis diffuse reflectance spectra. The effects of temperature,time and other factors on the synthesis of nano-t-ZrO2 were investigated by single factor experiments. The synthesized nano-ZrO2 was prepared into 1.5%(w) dispersion solution. The cross-linking gel was formed by crosslinking 0.6%(w) hydroxypropyl guanidine gum with volume ratio 1.5%(φ). The cross-linking gel was characterized and its properties were tested. The experimental results show that the optimum preparation conditions of nano-t-ZrO2 are 100 ℃,24 h,sodium lauryl sulfate is a surfactant,cyclohexane is an oil phase,and the mineralizer is a 4 mol/L NaOH solution;nano-zirconia is tetragonal zirconia with a large amount of hydroxyl groups on its surface;the cross-linked gel formed has good pick-up and temperature resistance,and shearing 120 min at 100 ℃,170 s^-1),the viscosity of gel fracturing fluid system remains about 100 mPa·s,and the breakability,residue content and suspended sand properties all meet the working requirements.
作者
李治鹏
杨洋
谷卓然
陈奇
叶世贵
卢宏涛
Li Zhipeng;Yang Yang;Gu Zhuoran;Chen Qi;Ye Shigui;Lu Hongtao(Sinopec Guangyuan Natural Gas Purification Co.,Ltd.,Guangyuan Sichuan 628000,China;China Nuclear Sichuan Environmental Protection Engineering Co.,Ltd.,Guangyuan Sichuan 628000,China)
出处
《石油化工》
CAS
CSCD
北大核心
2019年第11期1151-1156,共6页
Petrochemical Technology
关键词
纳米二氧化锆
压裂液
耐温
制备
表征
nano zirconia
fracturing fluid
temperature resistance
preparation
characterization
