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Study on properties of hydrophobic associating polymer as drag reduction agent for fracturing fluid

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An Erratum to this article was published on 03 April 2017

Abstract

In the paper, the hydrophobic associating polymer ACS-210 was prepared by solution polymerization of acrylamide, acrylic acid, salt-resisting monomer and hydrophobic monomer. Chemical structure and properties of the polymer was characterized by FTIR, TGA and XRD. The rheological property of ACS-210 solution was investigated by rheometer. The frictional resistance of the ACS-210 solutions at different application condition was examined using friction testing system. Results showed that the thermal stability of polymer ACS-210 increases and crystallinity of ACS-210 declines after incorporating of hydrophobic monomer. The viscosity of ACS-210 solution of different concentration decreased with prolonging the shearing time and the retention rate of viscosity is relatively high after long shearing time. The relation curve between the viscosity of polymer solution and shear rate followed the power law model. When the concentration of ACS-210 aqueous solution was less than the critical associating concentrations, storage modulus G’ is less than loss modulus G”, the association was weaker between the molecular chains, and the effective spatial structure did not form. After increasing the concentration of the polymer solution, G’ is more than G”, the degree of association of polymer is stronger. The synthesized polymer has favorable drag reduction effect. The molecular weight is not the only factor to determine drag reduction efficiency. The hydrophobic association can also improve the drag reduction efficiency.

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Acknowledgments

This work was financially supported by the national natural science foundation of China (Grant No. 51103081), the science and technology project of Shaanxi province (Grant No. 2016 GY-193) and the science and technology project of China Xi’an (Grant No. CXY1527).

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Correspondence to Xiaojuan Lai.

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An erratum to this article is available at http://dx.doi.org/10.1007/s10965-017-1225-4.

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Wang, L., Wang, D., Shen, Y. et al. Study on properties of hydrophobic associating polymer as drag reduction agent for fracturing fluid. J Polym Res 23, 235 (2016). https://doi.org/10.1007/s10965-016-1129-8

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  • DOI: https://doi.org/10.1007/s10965-016-1129-8

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