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Petroleum Science >2014,??Issue 3:??408-416 DOI: https://doi.org/10.1007/s12182-014-0355-0

Preparation of cationic polyacrylamide microsphere emulsion and its performance for permeability reduction Open?Access

文章信息

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作者：Guo Aijun,Geng Yiran,Zhao Lili,Li Jun,Liu Dong and Li Peng
作者單位：

State Key Laboratory of Heavy Oil Processing and College of Chemical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China;State Key Laboratory of Heavy Oil Processing and College of Chemical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China;State Key Laboratory of Heavy Oil Processing and College of Chemical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China;Technical Department of Ethylene Complex, Petrochina Dushanzi Petrochemical Company, Karamayi, Xinjiang 833600, China;State Key Laboratory of Heavy Oil Processing and College of Chemical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China;State Key Laboratory of Heavy Oil Processing and College of Chemical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China

投稿時(shí)間：2014-02-13
引用方式：Guo, A., Geng, Y., Zhao, L. et al. Pet. Sci. (2014) 11: 408. https://doi.org/10.1007/s12182-014-0355-0

文章摘要

In this paper, cationic polyacrylamide microspheres (CPAM) were synthesized using acrylamide (AM) and methacryloyloxyethyl trimethyl ammonium chloride (TMAEMC) as monomers, ammonium sulfate as dispersant, poly(acryloyloxyethyl trimethyl ammonium chloride) (PAETAC) as dispersion stabilizer, and ammonium persulfate as initiator. The synthetic method was dispersion polymerization. The effects of monomer ratio (AM/TMAEMC), dispersant concentration, and dispersion stabilizer dosage on dispersion polymerization were systematically studied to determine the optimal preparation conditions. The structure and viscosity of the synthesized polymer were characterized by FTIR and capillary viscometry, respectively, and the particle sizes and distribution of the polymer microspheres were characterized by microscopy and dynamic light scattering, respectively. Finally, flow tests were conducted to measure the permeability reduction performance of the microspheres at various concentrations in sand packs with different permeability. Results show that CPAM emulsion of a solids content of 1wt% has excellent performance in low-to-medium permeability formations (< 1,000 mD), and the efficiency may reach above 90%.

關(guān)鍵詞

    Dispersion polymerization, cationic polyacrylamide microspheres, profile modification, permeability reduction