Experimental Study on Resistance Characteristics of Oil-Water Two-Phase Flow in Channels with Micron Dimension

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Experimental Study on Resistance Characteristics of Oil-Water Two-Phase Flow in Channels with Micron Dimension

更新时间：2025-07-09

- Experimental Study on Resistance Characteristics of Oil-Water Two-Phase Flow in Channels with Micron Dimension
- Vol. 45, Issue 11, Pages: 11-15(2011)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124
- Online First：10 November 2011，
  
  Published：2011
- 稿件说明：
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Experimental Study on Resistance Characteristics of Oil-Water Two-Phase Flow in Channels with Micron Dimension[J]. 2011, 45(11): 11-15.
DOI：

Experimental Study on Resistance Characteristics of Oil-Water Two-Phase Flow in Channels with Micron Dimension[J]. 2011, 45(11): 11-15. DOI：

摘要

针对低渗透油藏孔隙尺度小、采收率低的问题

采用宽度为200 μm、深度分别为1.8 μm和4.1 μm的两个矩形通道

结合数字显微摄像技术和微流体测试技术

对岩层孔隙流动进行了模拟

得到了孔隙通道中单相油以及含油率(体积分数)为10%～60%的油水两相流的流动特性.实验结果表明:对于深度为1.8 μm和4.1 μm的两个矩形通道

单相油流动的摩擦系数低于理论值

并与雷诺数呈线性关系; 泊肃叶数小于理论预测值

通道尺度越小

泊肃叶数实验值与理论值的差异越大.油水两相流流动的摩擦系数与雷诺数也满足线性关系

在不同含油率时有的高于理论值

有的低于理论值; 泊肃叶数总体随含油率增加而减小

在含油率为20%与60%时出现跳跃式增长

分析表明泊肃叶数随含油率变化是受壁面亲水性的影响.

Abstract

Experimental simulations were performed on the flow in pores of porous media to solve the problem of small pore and low oil recovery in low permeability oilfields. Experiments were conducted for the flow in two rectangular microchannels with 200 μm in width

and 1.8 μm and 4.1 μm in depth respectively. The characteristics of oil flow and oil-water two-phase flow with the oil fraction 10%-60% in volume were obtained using the digital microscopy video technology and the microfluidic testing technology. The experimental results indicate that for the two channels with 1.8 μm and 4.1 μm in depth

the friction factors for the oil flow are lower than theoretical values and vary linearly with Reynolds number. The experimental Poiseuille numbers are less than the predictions and the difference between them increases with the decrease in the microchannel size. Moreover

for the oil-water two-phase flow

the friction factor also varies linearly with Reynolds number but is higher or lower than the theoretical value at different oil fractions. In addition

the Poiseuille number generally decreases with the increase in the oil fraction but increases sharply when the oil fraction is 20% or 60%

showing that the change of the Poiseuille number with the oil fraction is affected significantly by the hydrophilic property of channel walls.

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