Hele-Shaw 模型中纳米颗粒渗吸采油可视化实验  

Visualized experiment of the imbibition oil recovery for the nano-particles in Hele-Shaw model

作　　者：周彦霞 蒲辉[1] 钟珣 李春成 张少杰 孙润轩 ZHOU Yanxia;PU Hui;ZHONG Xun;LI Chuncheng;ZHANG Shaojie;SUN Runxuan(Petroleum Engineering Department,University of North Dakota,Grand Forks 58202,USA;MOE Key Laboratory of Enhancing Oil-Gas Recovery,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]北达科他大学石油工程系,美国北达科他州大福克斯58202 [2]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《大庆石油地质与开发》2019年第6期46-51,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：North Dakota industrial commission oil and gas research program(G-041-081);UND vice president for research&economic development postdoctoral funding program

摘　　要：致密油藏高效开发是石油科技人员不懈攻关的技术难题之一,渗吸采油是致密油藏开发的有效方法。为直观地展示渗吸采油过程,以物理模拟为技术手段,以Hele-Shaw模型为实验平台,开展了油藏初始润湿性和纳米颗粒粒径对渗吸采收率影响研究。结果表明:Hele-Shaw模型中主要发生逆向渗吸,原始亲水性储层渗吸采收率较高;与NaCl溶液相比,含纳米颗粒渗吸液可以驱替出更小孔喉的原油,而且颗粒粒径越小,渗吸采收率越高。The high-efficiency development of tight oil reservoirs is one of the technical problems to be made unremitting efforts for the petroleum science and technology workers. Imbibition oil recovery is an effective method for the development of the tight reservoirs. In order to visually demonstrate the imbibition process, taking the physical simulation as the technical means and Hele-Shaw model as the experimental platform to study the effects of the initial wettability of the reservoirs and nano-particle grain size on the imbibition oil recovery. The results show that the reverse imbibition occurred mainly in Hele-Shaw model and the original hydrophilic reservoir had pretty higher imbibition oil recovery;compared with the NaCl solution, the imbibition liquid containing the nano-particles can displace the crude oil in the smaller pores and throats. And moreover the smaller the particle size, the higher the imbibition oil recovery.

关 键 词：Hele-Shaw模型 纳米颗粒 渗吸采油 可视化实验 机理分析 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]