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Chemcial Industry and Engineering 2021, Vol. 38 Issue (3) :57-63    DOI: 10.13353/j.issn.1004.9533.20201006
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Plugging Property and Oil Displacement Performance of Nanoscale Polymer Microspheres
Li Xiang1, Qu Jin2, Ju Ye1, Tang Zhongli3, Wang Shuo2, Qi Peiyao2, Liu Fenggang1, Liu Xiaofei2
1. China Oilfield Services Limited, Tianjin 300450, China;
2. School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China;
3. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

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Abstract Nanoscale polymer microspheres have received more attention because of their good resistance to water, temperature, salinity, and lower operating costs. As a new flooding technology, polymer nanospheres can significantly improve the efficiency of oil field production. In order to better understand the flooding effect of polymer nanospheres, the plugging and flooding of polymer nanospheres were studied. In this paper, the micro-channel displacement experiment and the filter membrane experiment were carried out. The size changes of the microspheres after swelling were analyzed by the laser particle size analyzer, the microsphere emulsion was observed by transmission electron microscope, and the surface tension of the microsphere emulsion and dry powder in the air was studied. The results showed that in the microchannel experiments of 50 nm and 100 nm microspheres, micro-level agglomerates were observed, which enlarged the swept volume of the water dispersion system. Both nanoscale polymer microspheres exhibited a certain degree of agglomeration behavior. Swelling performance, entanglement between microspheres, emulsifiers and oil droplets was also found. The surfactant contained in the microsphere emulsion reduces the surface tension, thereby improving the oil displacement efficiency. In this paper, the plugging performance and oil displacement performance of nanoscale polymer microspheres are studied, which has significant reference for revealing the oil displacement mechanism of nanoscale polymer microspheres and the sustainable development and innovation of products.
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Articles by authors
Li Xiang
Qu Jin
Ju Ye
Tang Zhongli
Wang Shuo
Qi Peiyao
Liu Fenggang
Liu Xiaofei
Keywordsnanoscale polymer microspheres;   oil displacement;   swelling agglomeration property;   sweep efficiency     
Received 2020-10-29;
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Li Xiang, Qu Jin, Ju Ye, Tang Zhongli, Wang Shuo, Qi Peiyao, Liu Fenggang, Liu Xiaofei.Plugging Property and Oil Displacement Performance of Nanoscale Polymer Microspheres[J]  Chemcial Industry and Engineering, 2021,V38(3): 57-63
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