Janus纳米颗粒制备及其驱油性能  

Preparation and oil displacement performance of Janus nanoparticle

作　　者：郭永华 徐国瑞[1,2,3] 杨劲舟 李晓骁 王硕 楚重重 GUO Yonghua;XU Guorui;YANG Jinzhou;LI Xiaoxiao;WANG Shuo;CHU Zhongzhong(China Oilfield Service Company Limited,Tianjin 300459,China;State Key Laboratory of Efficient Offshore Oil and Gas Development,Beijing 102209,China;Tianjin Key Laboratory of Difficult-to-Produce Offshore Oil Reserves Exploitation,Tianjin 300459,China)

机构地区：[1]中海油田服务股份有限公司,天津300459 [2]海洋油气高效开发全国重点实验室,北京102209 [3]天津市海洋石油难动用储量开采重点实验室,天津300459

出　　处：《石油化工》2024年第9期1331-1337,共7页Petrochemical Technology

摘　　要：采用Pickering乳液法成功合成具有不同亲水、亲油性的Janus纳米颗粒,通过SEM,TEM,FTIR,TG等方法表征了Janus纳米颗粒的结构和性质,以此为基础构筑了Pickering乳液调剖剂体系,并通过单岩心物模实验测试了该体系在较低渗透率条件下的调剖效果。实验结果表明,Pickering乳液型调剖剂体系在90℃,35000 mg/L矿化度条件下具有较好的乳化性能和乳液稳定性,并展现出较好的乳化增黏效果。当岩心渗透率为50×10^(-3)μm^(2)时,后续水驱阶段注入压力可由1.053 MPa增至1.824 MPa,采收率可在一次水驱基础上提高16.71百分点,表明Pickering乳液调剖剂体系具有优良的调剖效果和提高采收率效果。Janus nanoparticles with different hydrophilicity and lipophilicity were synthesized by the Pickering emulsion method,and their structures and properties were characterized by SEM,TEM,FTIR,and TG methods.Based on this,a Pickering emulsion profile control agent system was constructed,and the profile control effect under the condition of low permeability was tested through a single-core physical model experiment.The experimental results demonstrate that the Pickering emulsion profile control agent system has good emulsifying performance and emulsion stability at 90℃and under the condition of 35000 mg/L salinity,and shows good emulsifying and viscosity-increasing effects.When the core permeability is 50×10^(-3)μm^(2),the injection pressure in the subsequent water drive phase increases from 1.053 MPa to 1.824 MPa,and the oil recovery efficiency can be improved by 16.71 percent points based on a single water drive.This indicates that the Pickering emulsion profile control agent system has excellent profile control and oil recovery efficiencyenhancing effects.

关 键 词：提高采收率 Janus纳米颗粒 二氧化硅 驱油 Pickering乳液 

分 类 号：TE357[石油与天然气工程—油气田开发工程]