耐高温VES-GY3清洁压裂液的室内研究
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摘要
室内以N,N-二甲基乙醇胺和溴代十六烷为原料合成了一种黏弹性表面活性剂,通过正交实验得到适宜的合成条件为:n(溴代烷)∶n(叔胺)=1∶1.1,反应温度为95℃,反应时间为8 h,溶剂加量为40%。得到的产品的产率高达93.21%。通过优选助剂,优化清洁压裂液VES-GY3体系配方为:2%黏弹性表面活性剂+1%水杨酸钠,其黏度值高达450 mPa·s。红外光谱分析结果表明合成反应生成了目标产物。性能考察实验结果表明,当温度稳定在144℃时,黏度稳定在25 mPa·s,表明压裂液具有良好的耐高温性能。
A viscoelastic surfactant was synthesized from N, N dimethylethanolamine and hexadecane bromide.The optimal synthesis conditions were obtained by orthogonal design, bromoalkane:tertiary amine equals 1:1.1,the reaction temperature is 95 ℃, the reaction time is 8 h, the solvent addition amount is 40%,and the yield of the obtained product is as high as 93.21%.The preferred formulation of the cleaning fracturing fluid VES-GY3 system is 2% viscoelastic surface by a preferred auxiliary agent.The active agent added 1% sodium salicylate has a viscosity value of up to 450 mPa.s.Infrared spectroscopy analysis showed that the synthesis reaction produced the target product.The performance test results show that when the temperature is stable at 144 ℃,the viscosity is stable at 25 mPa,indicating that the fracturing fluid has good high temperature resistance.
A viscoelastic surfactant was synthesized from N, N dimethylethanolamine and hexadecane bromide.The optimal synthesis conditions were obtained by orthogonal design, bromoalkane:tertiary amine equals 1:1.1,the reaction temperature is 95 ℃, the reaction time is 8 h, the solvent addition amount is 40%,and the yield of the obtained product is as high as 93.21%.The preferred formulation of the cleaning fracturing fluid VES-GY3 system is 2% viscoelastic surface by a preferred auxiliary agent.The active agent added 1% sodium salicylate has a viscosity value of up to 450 mPa.s.Infrared spectroscopy analysis showed that the synthesis reaction produced the target product.The performance test results show that when the temperature is stable at 144 ℃,the viscosity is stable at 25 mPa,indicating that the fracturing fluid has good high temperature resistance.
引文
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[3] 胡良培,黄伟,丛玉凤,等.清洁压裂液的究现状及发展趋势[J].当代化工,2014,43(8): 1507-1510.
[4] 严志虎,戴彩丽,赵明伟,等.清洁压裂液的研究与应用进展[J].油田化学,2015,32(1): 141-150.
[5] XIE D H, ZHAO J X, LIU L,et al. A highly viscoelastic anionic wormlike micellar system[J]. Acta Physico-Chimica Sinica, 2013, 29(7): 1534-1540.
[6] KAKADJINETAL S.Corsslinked emulsion to be used as fracturing fluids[C].SPE 65038,2001.
[7] 罗明良,贾自龙,孙厚台,等. 纳米TiO2改性MES黏弹性胶束溶液的性能[J]. 石油学报:石油加工, 2012, 28(3): 456-462.