Preparation,swelling properties,and displacement performance of functional amphiphilic microspheres |
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| Authors: | Peng Zhang Yuanjun Dong Wenzhang Huang Zhenfu Jia Chengyu Zhou Maolei Guo Haiyang Yu |
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| Affiliation: | 1. Chongqing University of Science & Technology, School of Chemistry and Chemical Engineering, Chongqing, China;2. Lipan Oil Production Plant, SINOPEC Shengli Oilfield Company, Dezhou, Shangdong, China;3. Institute of Shanxi Yanchang Petroleum (Group) Company, Limited, Xi'an, China;4. Hekou Oil Production Plant, SINOPEC Shengli Oilfield Company, Dongying, Shangdong, China |
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| Abstract: | Because polymers containing benzyl chloromethyl groups are easily modified for functional production, the dispersion polymerization of acrylamide, 4‐vinylbenzyl chloride, and N,N‐methylene bisacrylamide in dimethylformamide initiated with α,α‐azobisisobutyronitrile was carried out to produce amphiphilic microspheres containing benzyl chloromethyl groups. The structure of the amphiphilic microspheres was determined by IR and 1H‐NMR spectroscopy. The polymerization conditions, the temperature, amount of crosslinking agent, and initiator included, were optimized. The size distribution of the microspheres after swelling equilibrium ranged from 4 to 62 μm. The swelling behavior of the microspheres was also investigated. The increase in temperature and the decrease in salinity caused a gradual increase in the swelling ratio. The prepared microspheres were transported uniformly in porous media when the permeability was 0.436 μm2. The oil displacement experiments indicated that amphiphilic microspheres had the ability to enhance oil recovery under homogeneous and heterogeneous conditions but was more suitable for heterogeneous formation. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41578. |
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| Keywords: | oil and gas polyamides swelling |
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