纳米分散液驱油机理研究及应用实践  

Study on the mechanism of nano-fluids flooding and its application in oilfield

作　　者：王涛[1] 李敬松[1] 田苗[1] 徐国瑞[1] 贾永康[1] 朱旭晨 刘汝敏[1] WANG Tao;LI Jingsong;TIAN Miao;XU Guorui;JIA Yongkang;ZHU Xuchen;LIU Rumin(Oilfield Production Division,China Oilfield Services Limited,Tianjin 300459,China)

机构地区：[1]中海油田服务股份有限公司油田生产事业部,天津300459

出　　处：《石油化工应用》2022年第6期16-20,共5页Petrochemical Industry Application

基　　金：国家科技重大专项“渤海油田高含水水平井自控水选择性堵水技术研究与示范”,项目编号:2016ZX05058-003-02。

摘　　要：纳米分散液体系因其独有的特性,被认为是解决传统提高采收率(EOR)所面临的注入性差、地层损害等问题的新型药剂之一。研究表明纳米分散液的主要驱油机理包含楔形挤压效应、润湿性反转、降低界面张力等。详细分析纳米分散液提高采收率机理的基础上,通过数值模拟方法对施工工艺参数进行优化,并在现场试验应用,取得了较好的降水增油效果。实践进一步证明了此项技术的可行性,纳米分散液驱油技术有着广阔的应用前景。Because of its unique characteristics,nanometer dispersed liquid is considered as one of the new agents to solve the problems of poor injectability and formation damage faced by traditional enhanced oil recovery(EOR).The main displacement mechanism of nano-fluids is wedge extrusion effect,wettability reversal and reduction of interfacial tension.On the basis of elaborating and demonstrating the technical mechanism of nano-fluids flooding,this paper optimizes the process parameters through numerical simulation research,and obtains good effects of water precipitation reduction and oil increase through test application in offshore oilfields.The practice has further proved the feasibility of this technology and the nanometer dispersion flooding technology has a broad application prospect.

关 键 词：纳米分散液 驱油 界面张力 提高采收率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]