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LAPSE:2019.0347
Published Article
LAPSE:2019.0347
Shear Resistance Properties of Modified Nano-SiO₂/AA/AM Copolymer Oil Displacement Agent
Nanjun Lai, Xin Guo, Ning Zhou, Qian Xu
February 27, 2019
To address the problem regarding poor shear resistance of commonly employed polymers for oil displacement, modified nano-SiO₂/AA/AM copolymer (HPMNS) oil displacement agents were synthesized using acrylic acid (AA), acrylamide (AM), and modified nano-SiO₂ of different modification degrees as raw materials. HPMNS was characterized by means of infrared spectroscopy (IR), nuclear magnetic resonance (¹H-NMR, 13C-NMR), dynamic/static light scattering, and scanning electron microscope. A comparative study of the shear resistance properties for partially hydrolyzed polyacrylamide (HPAM) and HPMNS was conducted. Compared to HPAM, the introduced hyperbranched structure endowed HPMNS with good shear resistance, which was quantified from the viscosity retention ratio of the polymer solutions. From the perspective of rheological property, HPMNS also showed great shear stability after shearing by a Mixing Speed Governor and porous media shear model. Furthermore, with a higher degree of modification, HPMNS-2 had better shear stability in terms of viscosity and rheological property than HPMNS-1. The phenomena were due to its lower hydrodynamic radius, weight-average molecular weight, and better flexibility of its molecular chains. In addition, upon the indoor displacement test, the resistance factor and residual resistance factor values of HPMNS-2 were higher than those of HPAM. This behavior is beneficial for increasing oil recovery.
Keywords
enhanced oil recovery, modification degrees, rheological property, shear resistance, the modified nano-SiO2/AA/AM copolymer
Subject
Suggested Citation
Lai N, Guo X, Zhou N, Xu Q. Shear Resistance Properties of Modified Nano-SiO₂/AA/AM Copolymer Oil Displacement Agent. (2019). LAPSE:2019.0347
Author Affiliations
Lai N: School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu 610500, China; Faculty of Engineering and Applied Science, University of Regina, Regina, SK S4S 0A2, Canada
Guo X: School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu 610500, China
Zhou N: School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu 610500, China
Xu Q: School of Chemistry and Chemical Engineering of Southwest Petroleum University, Chengdu 610500, China
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Journal Name
Energies
Volume
9
Issue
12
Article Number
E1037
Year
2016
Publication Date
2016-12-09
Published Version
ISSN
1996-1073
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Original Submission
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PII: en9121037, Publication Type: Journal Article
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LAPSE:2019.0347
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doi:10.3390/en9121037
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Feb 27, 2019
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CC BY 4.0
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Feb 27, 2019
 
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Calvin Tsay
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