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ABSTRACT To improve the viscosity of carboxymethyl hydroxyethyl cellulose (CMHEC) solution and broaden its application, sodium trimetaphosphate (STMP) was used to modify CMHEC to obtain water-soluble STMP-CMHEC for the first… Click to show full abstract
ABSTRACT To improve the viscosity of carboxymethyl hydroxyethyl cellulose (CMHEC) solution and broaden its application, sodium trimetaphosphate (STMP) was used to modify CMHEC to obtain water-soluble STMP-CMHEC for the first time. The STMP-CMHEC solution shows better viscous performance than CMHEC solution. For the concentration of 0.5% (wt%), the viscosity of STMP-CMHEC solution is 2.6 times higher than that of CMHEC solution. To be applied in fracturing fluids, STMP-CMHEC solution was further cross-linked with organic zirconium. The changes of viscosity and viscoelasticity modulus with time in the cross-linking process were studied. The effects of shear rate and temperature on the gelling process were investigated. The four-parameter cross-linking rheokinetics equation could describe the viscosity–time curves under different shear rates. GRAPHICAL ABSTRACT
Journal Title: Journal of Dispersion Science and Technology
Year Published: 2017
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