水溶性环糊精聚合物提高疏水缔合聚合物性能研究

doi:10.13809/j.cnki.cn32-1825/te.2021.06.013

Abstract

Abstract:

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.

Key words: hydrophobically associative polymer, β-cyclodextrin polymer, host-guest inclusion, rheology, mobility control

CLC Number:

TE39

Xi LI,Xi ZHOU,Zhongbin YE, et al. Performance enhancement of hydrophobically associative polymer by watersoluble β-cyclodextrin polymer[J]. Petroleum Reservoir Evaluation and Development, 2021, 11(6): 884-889.

Figures/Tables 10

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References 20

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编号	直径（cm）	长度（cm）	孔隙度（%）	渗透率（10^-3μm²）
1	3.804	7.69	18.93	884
2	3.801	7.71	19.16	917
3	3.810	7.68	19.42	846

样品	零剪切黏度（mPa·s）	时间常数（s）	临界剪切速率（s^-1）	n
HPAM	47.5	0.52	1.94	0.77
HAP	624.5	0.64	1.57	0.40
β-CDP/HAP	1 513.9	0.81	1.24	0.35

聚合物	R_F	R_RF	r_p（μm）	e（μm）
HPAM	17.25	2.05	0.679	0.112
HAP	140.36	14.74	0.712	0.349
β-CDP/HAP	431.44	19.83	0.703	0.370

Performance enhancement of hydrophobically associative polymer by watersoluble β-cyclodextrin polymer

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