Rheology and high-temperature stability of novel viscoelastic gemini micelle solutions

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY(2018)

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摘要
To broaden the application of clean fracturing fluid based on surfactant, a gemini cationic C-25-tailed surfactant, called FL-25, was synthesized. FL-25 can form a wormlike viscoelastic fluid in aqueous solution without adding any organic or inorganic salts. The rheological properties and thermal stability of the novel gemini micelle solutions were further investigated. The results show that the gemini micelle solution possesses viscoelasticity, thixotropy, and shear-thinning properties. The apparent viscosity of the viscoelastic gemini micelle solution at a shear rate of 170s(-1) remains approximately 69mPas at 110 degrees C for 90 minutes, showing good high-temperature-resistance property. FL-25 may be a novel gemini surfactant applied in clean viscoelastic surfactant fracturing fluids in the oil and gas field. [GRAPHICS] .
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关键词
Clean fracturing fluid,gemini cationic surfactant,rheological behaviors,thermal stability,viscoelastic surfactant
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