A nano‐Fe 3 O 4 material coated with AM / AMPS copolymer for viscosity enhancement at harsh reservoir conditions
A nano‐Fe 3 O 4 material coated with AM / AMPS copolymer for viscosity enhancement at harsh reservoir conditions
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DOI：
10.1002/app.50601
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发表时间：
2021-02
影响因子：
3
通讯作者：
Wenlong Qin;Ruixuan Li;Hanxi Li;G. Jiang;Guo-Quan Qin;Yang Wang;Jiang Yang
中科院分区：
文献类型：
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作者：
Wenlong Qin;Ruixuan Li;Hanxi Li;G. Jiang;Guo-Quan Qin;Yang Wang;Jiang Yang
采用乳液聚合法制备了丙烯酰胺/2-丙烯酰胺基-2-甲基-1-丙磺酸共聚物包覆的Fe 3 O 4纳米粒子（Fe 3 O 4-Polymer NPs）。然后通过红外光谱、热重分析和扫描电子显微镜对Fe 3 O 4-聚合物纳米颗粒的结构进行表征。同时，系统研究了Fe 3 O 4-Polymer NPs溶液的流变性能。结果表明，当疏水性Fe 3 O 4-Oleic NPs用量为10%时，合成的Fe 3 O 4-Polymer NPs具有最佳的增粘性能，最大饱和磁化强度可达20.0 emu/g。5000 mg/L磁性纳米复合材料溶液在30°C时的表观粘度值为154.6 mPa·s。它表现出较强的增粘能力和良好的温度性能。因此，它在中高温油气藏的增产措施中具有很大的应用潜力。
A Fe3O4nonaparticles coated with acrylamide/2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid copolymer(Fe3O4‐Polymer NPs) was synthesized by emulsion polymerization. The structure of Fe3O4‐Polymer NPs was then characterized by infrared spectroscopy, thermo‐gravimetric analysis, and scanning electron microscopy. Meanwhile, the rheological properties of Fe3O4‐Polymer NPs solution were systematically studied. The results showed that when dosage of hydrophobic Fe3O4‐Oleic NPs is 10%, the synthesized Fe3O4‐Polymer NPs was with the best viscosity enhancement performance, and the maximum saturation magnetization could reach to 20.0 emu/g. The apparent viscosity value of 5000 mg/L magnetic nano‐composite solution was 154.6 mPa·s at 30°C. It shows strong viscosity enhancement ability and good temperature performance. Hence, it has great application potential in well stimulation of medium and high temperature oil and gas reservoirs.