低浓度胍胶压裂液有机硼交联剂YJ-P的合成与应用  

Synthesis and Application of Organic Boron Crosslinker YJ-P for Low-concentration Guanidine Gum Fracturing Fluids

作　　者：张林[1] 沈一丁[1] 隋明炜[1] 杨晓武[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《精细化工》2013年第1期104-107,共4页Fine Chemicals

基　　金：陕西省自然科学基金项目(2012JQ2004;2012JQ2005);陕西省重大科技创新项目(2011ZKC04-3)~~

摘　　要：该文通过考察压裂液的悬砂时间确定了合成反应中硼砂用量、配位剂组分质量比、溶剂组分质量比对有机硼交联剂YJ-P交联低浓度胍胶压裂液携砂性能的影响,并通过动态流变研究压裂体系的黏弹性。结果表明,硼砂质量分数25%(即硼砂质量占交联剂质量的百分数,下同),配位剂m(葡萄糖):m(乙二醇)=1:1.5,溶剂m(丙三醇):m(水)=6:1,交联剂质量分数为1.2%(即交联剂质量占压裂液质量的百分数,下同)时,悬砂性能最优,悬砂时间达到了27 min/mm。确定反应时间4.0 h,反应温度80℃,改性有机硼交联剂对低浓度胍胶压裂液有良好的悬砂性。当胍胶的质量分数达0.2%时,剪切频率增加,动态模量增加,在角频率达10 rad/s时,G'>G″,且G'>0.1 Pa,压裂液有较好的黏弹性。Through investigating the proppant-carrying time of the fracturing fluid, the optimal content of borax, complexing agent, solvent for preparing the organic boron crosslinker YJ-P were determined. In addition, the viscoelastic property of the fracturing system was studied by means of the dynamic rheology. The results show that, when borax mass fraction was 25 %, compound complexing agent mass ratio [ m （glucose） ： m （MEG） ] was 1 ： 1.5, mass ratio of glycerol to water was 6：1 and mass fraction of crosslinking agent was 1.2% with low-concentration guanidine gum fracturing fluids, the fracturing system had optimal proppant-carrying performance;the proppant-carrying time reached 27 min/mm. The reaction time was ascertained to be 4. 0 h and the reaction temperature to be 80℃, the modified organic boron crosslinking agent exhibited the optimal proppant-carrying performance on the low- concentration guanidine gum fracturing fluid. When the minimum mass fraction of guanidine gum reached 0. 2%, the dynamic modulus increased with the growth of angular frequency. When the angular frequency was up to 10 nd/s,we got G＇ 〉 G＂,and G＇ 〉 0.1 Pa,where the fracturing fluid had optimal viscoelasticity.

关 键 词：有机硼 低浓度胍胶 压裂液 交联剂 携砂性能 油田化学品与油品添加剂 

分 类 号：TE39[石油与天然气工程—油气田开发工程]