Volume 33 Issue 2
Mar.  2016
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JIA Shuai, QIN Wenlong, YANG Jiang, LIU Xuan, ZHOU Yining. Effect of Nano ZnO on Rheology of CTAC Wormlike Micelle[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(2): 106-110,116. doi: 10.3969/j.issn.1001-5620.2016.02.023
Citation: JIA Shuai, QIN Wenlong, YANG Jiang, LIU Xuan, ZHOU Yining. Effect of Nano ZnO on Rheology of CTAC Wormlike Micelle[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(2): 106-110,116. doi: 10.3969/j.issn.1001-5620.2016.02.023

Effect of Nano ZnO on Rheology of CTAC Wormlike Micelle

doi: 10.3969/j.issn.1001-5620.2016.02.023
  • Received Date: 2015-12-25
  • Publish Date: 2016-03-31
  • The unique surface natures of nano materials make them suitable for modification to produce oilfield chemicals of excellent performance.The optimum ratio is studied that cetyltrimethyl ammonium chloride (CTAC),a clean fracturing fluid additives commonly used in China,to form worm-like micelle with sodium salicylate (NaSal).Nano ZnO was used to modify the property of the worm-like micelle solution through quasi-crosslinking,and the mechanism of nano ZnO in enhancing the viscosity,thermal stability and shearing stability was analyzed.The mass fraction of ZnO needed for the modification was optimized.In laboratory experiments,the viscosity of the micelle solution reached the maximum value at CTAC:NaSal=1.25:1(molar ratio),and so does the length of the micelle.The micelle solution has the best viscosifying performance at 0.2% of ZnO,and the viscosity of the solution is maintained at 60 mPa·s at 90℃,even after long time of shearing and heating.CTAC micelle solution modified with nano ZnO shows elasticity as a whole,and its rheological behavior conforms to Maxwell rheological model,as demonstrated by Cole-Cole fitting.This micellesolution is a linear viscoelastic fluid with single relaxation time.

     

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