低渗透油田增注用SiO_2纳米微粒的制备和表征  

Preparation and Characterization of SiO_2 Nanoparticles—Water Flooding Enhancement Agent of Low Permeability Oil Field

作　　者：曹智[1] 张治军[1] 赵永峰[2] 曹绪龙[3] 张继超[3] 

机构地区：[1]河南大学特种功能材料重点实验室,河南开封475001 [2]胜利油田胜利化工有限公司,山东东营257099 [3]胜利油田地质科学院,山东东营257099

出　　处：《化学研究》2005年第1期32-34,共3页Chemical Research

基　　金：国家高技术研究发展计划资助项目(2002AA302607).

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 SIO2 二氧化硅 纳米技术 制备方法 化学结构 石蜡 

分 类 号：O613.72[理学—无机化学] TE348[理学—化学]