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Journal of Chemistry
Volume 2013, Article ID 437309, 10 pages
http://dx.doi.org/10.1155/2013/437309
Research Article

Synthesis and Performance of an Acrylamide Copolymer Containing Nano-SiO2 as Enhanced Oil Recovery Chemical

1State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
2College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
3Department of Petroleum Chemical Engineering, Karamay Vocational & Technical College, Karamay 833600, China

Received 4 April 2013; Revised 9 July 2013; Accepted 12 August 2013

Academic Editor: Ibnelwaleed Ali Hussien

Copyright © 2013 Zhongbin Ye et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A novel copolymer containing nano-SiO2 was synthesized by free radical polymerization using acrylamide (AM), acrylic acid (AA), and nano-SiO2 functional monomer (NSFM) as raw materials under mild conditions. The AM/AA/NSFM copolymer was characterized by infrared (IR) spectroscopy, 1H NMR spectroscopy, elemental analysis, and scanning electron microscope (SEM). It was found that the AM/AA/NSFM copolymer exhibited higher viscosity than the AM/AA copolymer at 500 s−1 shear rate (18.6 mPa·s versus 8.7 mPa·s). It was also found that AM/AA/NSFM could achieve up to 43.7% viscosity retention rate at 95°C. Mobility control results indicated that AM/AA/NSFM could establish much higher resistance factor (RF) and residual resistance factor (RRF) than AM/AA under the same conditions (RF: 16.52 versus 12.17, RRF: 3.63 versus 2.59). At last, the enhanced oil recovery (EOR) of AM/AA/NSFM was up to 20.10% by core flooding experiments at 65°C.