文章摘要
多氨基硼交联剂的制备与性能评价
Preparation and Property Evaluation of Polyamine Boron Crosslinkers
投稿时间:2019-04-02  修订日期:2019-07-09
DOI:
中文关键词: 交联剂  多乙烯多胺  压裂液  热稳定性
英文关键词: crosslinker  polyethyene polyamine  fracturing fluid  thermal stability
基金项目:国家科技重大专项(2016ZX05053-004)
作者单位E-mail
罗攀登 中国石化西北油田分公司石油工程技术研究院中国石化缝洞型油藏提高采收率重点实验室 lpdhmh@163.com 
宋志峰 中国石化西北油田分公司石油工程技术研究院中国石化缝洞型油藏提高采收率重点实验室  
张建贝 中国石油大学(华东)石油工程学院  
曹杰 中国石油大学(华东)石油工程学院 jcao@upc.edu.cn 
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中文摘要:
      以多胺化合物(二乙烯三胺、四乙烯五胺、多乙烯多胺、聚乙烯亚胺-600)、硼酸酯为原料,合成羟丙基胍胶压裂液用有机硼交联剂,通过在交联剂中引入多个含硼交联位点,达到降低压裂液体系中羟丙基胍胶的用量、提升压裂液体系的耐温性能的目的。采用FTIR、1H-NMR和11B-NMR对不同交联剂的结构进行了表征,分析了反应机理。考察了多胺化合物的种类、反应物的配比、反应温度和反应时间对产物交联性能的影响,结果表明,当硼酸酯与多乙烯多胺的质量比为3∶2、反应时间为4 h、反应温度为150℃时,可以制备性能最优的交联剂BNX-1。评价了BNX-1配制压裂液的耐温耐剪切性能、破胶性能和静态滤失性能。结果表明,以羟丙基胍胶质量分数0.35%、羟丙基胍胶溶液与BNX-1交联质量比100∶0.4配制的压裂液体系,在140℃、170 s-1下剪切,120 min后黏度为122 mPa·s;以工业交联剂TCB-1作为对照(以羟丙基胍胶质量分数为0.5%、羟丙基胍胶溶液与TCB-1交联质量比为100∶0.5配制的压裂液体系),在同等条件剪切下,黏度为98mPa·s。
英文摘要:
      An organic boron crosslinkerwas synthesized by the reaction between polyamine com-pound(diethylenetriamine、1,4,7,10,13-pentaazatridecane、polyethylene-polyamines、polyethylenimine-600) and boric acid ester. Due to several boron-based crosslinking sites in this crosslinker, the amount of thickening agent used in fracturing fluid was reduced and the heat re-sistance of fracturing fluid was also enhanced. The structures of different crosslinkerswere charac-terized by FTIR 、1H-NMR and 11B-NMR, and the reaction mechanisms were discussed. Several factors including the type of polyamine compounds, the ratio between two raw chemicals, reaction temperature and time were studied.The results show that when the mass ratio of borate esterto poly-ethene polyaminewas 3:2, reaction time was 4 h, reaction temperature was 150℃, the product with the best performance was obtained and named as BNX-1. The heat and shear resistance, gel-breaking performance and static fluid-loss performance of the BNX-1 based fracturing fluid were studied. Af-ter being sheared at a shear rate of 170 s-1 for 120 min under 140℃, the fracturing fluid (guar gum 0.35%, crosslinking ratio 100:0.4) could maintain the viscosity up to 122 mPa·s. However, the vis-cosity of an industrial crosslinker (TCB-1) based system (guar gum 0.5%, cross-linking ratio 100:0.5) was 98 mPa·s via the same measurement.
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