将有机改性之后的纳米二氧化硅与单体甲基丙烯酸十八酯、丙烯酰胺和苯乙烯反应合成一种油溶性的原油纳米复合降黏剂（NVR），并通过红外和扫描电镜对其结构和形貌进行表征。在60℃的条件下，考察了不同二氧化硅添加质量、合成反应时间和温度制备出的降黏剂的降黏效果，并对其在克拉玛依原油中的使用量进行了研究。结果表明，纳米复合降黏剂NVR对克拉玛依原油有明显的降黏效果，最佳配方下制备的产物对该原油具有91%以上的表观降黏率和32%以上的净降黏率。

An oil-soluble nanocomposite viscosity reducer (NVR) for crude oil is synthesized with organic modified nanosilica,octadecyl methacrylate,acrylamide and styrene as raw materials.Its structure and morphology are characterized by IR and SEM.Under 60℃,the viscosity reduction effect of NVR prepared by different silica dosages,synthesis reaction time and temperature is investigated.The usage of NVR in Karamay crude oil is studied.It is shown that the prepared NVR has obvious viscosity-reducing effect on Karamay crude oil.If the NVR product prepared under the optimum formulation is used,it can result in an apparent viscosity reduction rate of over 91% and a net viscosity reduction rate of over 32% for Karamay crude oil.

青玉泉(1993-),男,硕士研究生,研究方向为高分子及其复合材料工程,1909643348@qq.com