用于压裂液改性的耐高温锆硼交联剂的制备及评价

doi:10.19894/j.issn.1000-0518.200276

摘要/Abstract

摘要： 通过优化实验,得到了用于压裂液改性的耐高温锆硼交联剂的最佳条件,即以质量分数为0.5%的二氧化锆乳状液用量为基准,其它试剂用量为:质量分数为4%硼砂,体积分数为50%丙三醇,反应时间为5 h,反应温度60 ℃,乙酰丙酮体积分数为8%,三乙醇胺体积分数40%。采用傅里叶变换红外光谱仪(FT-IR)、扫描电子显微镜(SEM)和高温流变仪等技术手段表征了产物的结构和性能。结果表明,在交联比为0.5%下,耐高温锆硼交联剂与0.6%的羟丙基胍胶(HPG)基液形成的交联冻胶在160 ℃、170 s^-1的测试条件下恒速剪切2 h,剪切后冻胶的黏度最后保持130 mPa·s以上,弹性模量明显大于粘性模量,表现出良好的应用前景。

关键词: 交联剂, 压裂液, 耐温耐剪切

Abstract: Through optimization experiments, the optimal experimental condition for nano zirconium boron crosslinker was obtained: based on the amount of 0.5% zirconia emulsion, the amounts of other reagents are 4% borax, 50% glycerin alcohol, 8% acetylacetoneis and 40% triethanolamine, the reaction time is 5 h, and the reaction temperature is 60 ℃. Fourier transform infrared spectrometry (FT-IR), scanning electron microscopy (SEM) and high temperature rheometry were used to characterize the properties and structures of the high temperature resistant zirconium boron crosslinker. The results show that at a cross-linking ratio of 0.5%, the nano zirconium boron crosslinker and 0.6% HPG base liquid are formed. The crosslinked jelly is sheared at a constant speed for 2 h under the test conditions of 160 ℃ and 170 s^-1, the elastic modulus is significantly greater than the storage modulus, and the viscosity of the jelly is finally maintained above 130 mPa·s after shearing, showing good temperature and shear resistance.

Key words: Crosslinker, Fracturing fluid, Temperature and shear resistance

中图分类号:

O614

杨洋, 陈奇, 李治鹏, 谷卓然, 叶世贵, 佘雪. 用于压裂液改性的耐高温锆硼交联剂的制备及评价[J]. 应用化学, 2021, 38(4): 431-438.

YANG Yang, CHEN Qi, LI Zhi-Peng, GU Zhuo-Ran, YE Shi-Gui, SHE Xue. Synthesis and Evaluation of High Temperature Resistant Zirconium Boron Crosslinker for Fracturing Fluid[J]. Chinese Journal of Applied Chemistry, 2021, 38(4): 431-438.

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