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Synthesis and characterization of a water‐soluble sulfonates copolymer of acrylamide and N ‐allylbenzamide as enhanced oil recovery chemical
Author(s) -
Ye Zhongbin,
Gou Guangjun,
Gou Shaohua,
Jiang Wenchao,
Liu Tongyi
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38385
Subject(s) - copolymer , acrylamide , brine , monomer , polymer chemistry , enhanced oil recovery , chemistry , viscosity , apparent viscosity , infrared spectroscopy , polymer , shear rate , materials science , chemical engineering , nuclear chemistry , organic chemistry , composite material , engineering
A novel water‐soluble polymer was prepared by copolymerization and sulfomethylation using acrylamide (AM) and N ‐allylbenzamide (NABI) as raw materials under mild conditions. The effects of ratio of AM to NABI, initiator concentration, reaction temperature, pH, and monomer concentration on the copolymerization were studied. The sulfonates copolymer was characterized by infrared (IR) spectroscopy, 1 H NMR spectroscopy, elemental analysis, and atomic force microscopy (AFM). It was found that the sulfonates copolymer could achieve up to 25%, 30% retention rate of the viscosity at a high temperature (120°C) and a vigorous shear condition (1000 s −1 ). It was also found that the sulfonates copolymer had moderate salt tolerance (NaCl, CaCl 2 , and MgCl 2 ·6H 2 O) and its viscosity could be restored to the original value when the shear rate changed from 170 to 510 s −1 and 510 to 170 s −1 . At last, the enhanced oil recovery (EOR) of the sulfonates copolymer was tested by core flood, and with up to 10.6% EOR was afforded in presence of 5000 mg/L NaCl brine at 60°C. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013