Performance enhancement of hydrophobically associative polymer by watersoluble β-cyclodextrin polymer
Vol. 11, Issue 6, Pages: 884-889(2021)
Published:2021
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DOI:
LI Xi, ZHOU Xi, YE Zhongbin, et al. Performance enhancement of hydrophobically associative polymer by watersoluble β-cyclodextrin polymer[J]. Petroleum Reservoir Evaluation and Development, 2021, 11(6): 884-889.DOI:
Performance enhancement of hydrophobically associative polymer by watersoluble β-cyclodextrin polymer
In order to improve the rheological properties of hydrophobically associating polymers(HAP) and the mobility control ability in porous media
a water-soluble cyclodextrin polymer
β-CDP. is synthesized by condensation of the cyclodextrin and epichlorohydrin
meanwhile
mixed with the HAP. The results showed that the host-guest interaction improves the thickening ability and viscoelasticity of the HAP solution. The host-guest inclusion system of β-CDP and HAP maintained shear thinning behavior. β-CDP/HAP demonstrated special viscosity-temperature curves and its activation energy changes with temperature
showing a strong ability of temperature resistance. The core flooding experiments showed that β-CDP/HAP formed multilayer adsorption in porous media and had stronger mobility control ability than HAP. By the host-guest interaction between the hydrophobesp and the cyclodextrin groups
the intermolecular interaction can be enhanced
and the comprehensive performance of HAP can be improved.