This demonstrates the excellent stability of Pickering emulsions and improves the problem of easy demulsification. Pickering emulsions based on Fe 3O nanoparticles at an oil-to-water ratio of 5:5, 50☌, the water separation rate was only 6% and the droplet diameter of the emulsion was approximately 15 μm in the ultra-depth-of-field microscope image. The results showed that the synthesis of Fe 3O nanoparticles was found to have a hydrophobic core-shell structure with a diameter of 30 nm. Meanwhile, the flooding property of the constructed Pickering emulsion was evaluated on the basis of certain downhole conditions. To disclose the flooding mechanism from magnetic nanoparticles, the physico-chemical characterization of Fe 3O was systematically examined. In this work, a novel Pickering emulsion with special magnetic nanoparticles Fe 3O was designed and prepared. Pursuing a new robust emulsion plays a fundamental role in developing highly effective emulsion flooding technology. With an extensive application of flooding technologies in oil recovery, traditional emulsion flooding has seen many limits due to its poor stability and easy demulsification. 5College of Petroleum and Nature Gas Engineering and College of Energy, Changzhou University, Changzhou, China.4Foundation College, Zhejiang Pharmaceutical University, Ningbo, China.3China National Logging Corporation, Xi’an, China.2National and Local Joint Engineering Research Center of Harbor Oil and Gas Storage and Transportation Technology, Zhejiang Ocean University, Zhoushan, China.1College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan, China.Xiaojuan Hu 1, Yunqian Long 1,2*, Gong Xuan 3, Yuyi Wang 1, Xiaohe Huang 1,2, Yupeng Xu 1,2, Jing Liu 4, Bohong Wang 2 and Fuquan Song 5

Surface tension pickering emulsion