西安石油大学学报（自然科学版）2024，Vol.39Issue(2)：70-78,9.DOI:10.3969/j.issn.1673-064X.2024.02.009
低浓度胍胶压裂液有机硼交联剂BOA的合成及其性能评价
Synthesis and Performance Evaluation of Organoboron Crosslinker BOA for Low Concentration Guanidine Fracturing Fluid
摘要
Abstract
In the guanidine gum fracturing fluid system,the concentration of guanidine gum is high and the residual content after gel breaking is high.To address these issues,an organic boron crosslinking agent BOA for low concentration guanidine gum fracturing fluid systems was synthesized using boric acid,n-butanol,ethylene glycol,and diethylenetriamine as raw materials,and the optimal mass frac-tion of reactants was determined:34.5％for diethylenetriamine,14.3％for boric acid,38.7％for ethylene glycol,and 6.9％for n-bu-tanol.The performance evaluation results of the crosslinking agent show that the viscosity of the guanidine gel fracturing fluid formed by BOA and 0.2％guanidine gel can reach 84 mPa.s,and it has good temperature resistance and shear resistance.The viscosity of the guanidine gum fracturing fluid can be maintained at 90 mPa.s when sheared at 100 s-1 for60 minutes and gradually heated to 90℃,or when sheared at 60℃ and 100 s-1 for 90 minutes,and it has the advantages of low filtration loss(filtration loss coefficient of 2.0×10-4 m/min1/2),good sand-carrying performance(settling speed of suspended sand is 0.045 mm/s),fast gel breaking speed(com-plete gel breaking within 90 minutes),viscosity of broken fluid<5 mPa.s,and low residue content(151 mg/L),which can meet the on-site construction requirements of fracturing fluid.关键词
低浓度胍胶压裂液/有机硼交联剂/黏度/耐温耐剪切性能/破胶性能Key words
low concentration guanidine fracturing fluid/organic boron crosslinker/viscosity/temperature and shear resistance perform-ance/gel-breaking performance分类
能源科技引用本文复制引用
秦芳玲,张兵兵,王争凡,徐栋,朱卫平,卢聪..低浓度胍胶压裂液有机硼交联剂BOA的合成及其性能评价[J].西安石油大学学报（自然科学版）,2024,39(2):70-78,9.基金项目
陕西省自然科学基础研究计划项目(2022JQ-150) （2022JQ-150）
西安石油大学研究生创新与实践能力培养计划项目(YCS21213190) （YCS21213190）
