摘要
针对纳米粒子在驱替过程中降低油水界面能力差和乳化能力差的问题,通过pickering乳液界面保护法非对称修饰纳米SiO_(2),成功制备具有双亲性结构的Janus-纳米SiO_(2)。通过验证,亲油改性剂十六烷基三甲氧基硅烷成功引入,几乎所有的纳米SiO_(2)在制备的过程都被石蜡成功保护,成功制备双亲性Janus-SiO_(2)。该方法是一种可大批量高效简单制备Janus-纳米SiO_(2)的方法,为油田领域大批量应用需求提供基础。Janus-纳米SiO_(2)比亲水纳米SiO_(2)和亲油纳米SiO_(2)的乳化能力更强,稳定性更高,所以它的携油能力更强;在油藏高含水情况下,Janus-纳米SiO_(2)形成的乳液液滴浮在水相上,可随水的运动被带出,提高油藏采收率;Janus-纳米SiO_(2)在较低的浓度下即可形成稳定的乳液层,有利于节约成本,有油田领域应用前景。
In view of the poor ability of nanoparticles to reduce the oil-water interface and emulsify in the displacement process,Janus nano-SiO_(2) with amphiphilic structure was successfully prepared by asymmetric modification of nano-SiO_(2) through pickering lotion interface protection method.Through verification,the lipophilic modifier hexadecyl trimethoxysilane was successfully introduced,and almost all of the nano-SiO_(2) was successfully protected by paraffin during the preparation process,and amphiphilic Janus nano-SiO_(2) was successfully prepared.By this method,Janus nano-SiO_(2) can be efficiently and simply prepared in large quantities,providing a basis for large-scale application needs in the oil field.Janus nano-SiO_(2) has stronger emulsifying ability and stability compared to hydrophilic and lipophilic nano-SiO_(2),so its oil carrying capacity is stronger.In the case of high water cut in the reservoir,the lotion droplets formed by Janus nano-SiO_(2) float on the water phase and can be brought out with the movement of water to improve the oil recovery of the reservoir;Janus nano-SiO_(2) can form a stable lotion layer at a lower concentration,which is conducive to cost saving and has application prospects in the oil field.
作者
史磊
马志
闫海俊
臧龙
曹杰
宋颖
郭锦棠
SHI Lei;MA Zhi;YAN Haijun;ZANG Long;CAO Jie;SONG Ying;GUO Jintang(Engineering Technology Research Institute of North China Oilfield Company,Renqiu 062552,Heibei,China;School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China)
出处
《化学工业与工程》
北大核心
2025年第1期41-46,共6页
Chemical Industry and Engineering
