机构地区: 河南大学
出 处: 《化学研究》 2005年第1期32-34,共3页
摘 要: 用原位表面修饰法制备了低渗透油田增注用SiO2纳米微粒,用透射电镜、X射线粉末衍射、红外光谱和热分析等手段对其形貌、化学结构和热力学性质进行了研究,考察了其在有机介质中的分散性.结果表明经表面修饰的SiO2纳米微粒在柴油、液体石蜡中有很好的亲油性,岩心驱替试验表明该材料能有效提高水相渗透率. SiO_2nanoparticles were prepared by in-situ modificationmethod. The morphology, structure, and thermodynamicproperties were studied by TEM,XRD,FT-IR and TG/DTA. The oil dispersibility in organic solvents was evaluated. The results showed that the silica nanoparticles had a good oil dispersibility in diesel oiland paraffin oil. The core driving experiment proved that the nanoparticles can enhance the water permeability rate effectively.
关 键 词: 低渗透油田 二氧化硅 纳米技术 制备方法 化学结构 石蜡
领 域: [理学] [理学] [石油与天然气工程]