模拟孔喉构型变径通道中微气泡流动特性研究

doi:10.11885/j.issn.1674-5086.2020.09.21.04

西南石油大学学报(自然科学版) ›› 2022, Vol. 44 ›› Issue (6): 87-96.DOI: 10.11885/j.issn.1674-5086.2020.09.21.04

模拟孔喉构型变径通道中微气泡流动特性研究

吴彬彬^1,2, 王成胜^1,2, 陈平^1,2, 黄波^2,3, 唐恩高^2,3

1. 中海油能源发展股份有限公司工程技术分公司, 天津塘沽 300452;
2. 海洋石油高效开发国家重点实验室, 北京朝阳 100028;
3. 中海油研究总院有限责任公司, 北京朝阳 100028

收稿日期:2020-09-21 出版日期:2022-12-10 发布日期:2023-01-16
通讯作者: 吴彬彬,E-mail:wubinbin0404@126.com
作者简介:吴彬彬,1990年生,男,汉族,安徽铜陵人,工程师,硕士,主要从事油气田开发方面的研究工作。E-mail:wubinbin0404@126.com
王成胜,1979年生,男,汉族,江苏徐州人,高级工程师,主要从事油气田开发方面的研究。E-mail:wangchsh2@cnooc.com.cn
陈平,1963年生,男,汉族,天津人,高级工程师,主要从事油气田提高采收率技术方面的研究工作。E-mail:chenping3@cnooc.com.cn
黄波,1974年生,男,汉族,湖北黄冈人,教授级高级工程师,主要从事油气田开发方面的研究工作。E-mail:huangbo@cnooc.com.cn
唐恩高,1978年生,男,汉族,辽宁普兰店人,高级工程师,博士,主要从事油气田开发方面的研究工作。E-mail:tangeg@cnooc.com.cn
基金资助:
中海油能源发展股份有限公司重大科技专项（HFZXKT-GJ2020-01-01）

Research on the Flow Characteristics of Micro-bubbles in a Simulated Pore Throat Channel

WU Binbin^1,2, WANG Chengsheng^1,2, CHEN Ping^1,2, HUANG Bo^2,3, TANG Engao^2,3

1. CNOOC EnerTech-Drilling & Production Company, Tanggu, Tianjin 300452, China;
2. State Key Laboratory of Offshore Oilfield Exploitation, Chaoyang, Beijing 100028, China;
3. CNOOC Research Institute Co. Ltd., Chaoyang, Beijing 100028, China

Received:2020-09-21 Online:2022-12-10 Published:2023-01-16

摘要/Abstract

摘要： 为了了解微泡沫驱中微气泡在多孔介质中的渗流特性，设计制作了一种集成T型通道和变径通道的微流控芯片，采用基于显微成像的微流控系统观察了液相分别为去离子水和0.02%吐温20水溶液时，微气泡在变径通道内的流动特性，并采用CFD方法分析了微气泡融合、变形过程中速度和压力变化情况。研究结果表明，以去离子水为液相时，随着气体压力和液相流速的变化，微气泡在流经变径通道时出现融合和不融合两种行为；以0.02%吐温20水溶液为液相时，微气泡在流经变径通道时会依次通过；微气泡在“喉—孔”处融合时，表面张力促使微气泡变形导致周围流体速度波动较大，形成“涡流”；融合后的气泡再次进入“喉道”时，“孔道”内压力增大。本研究有助于进一步认识微泡沫驱的渗流特性及驱油机理。

关键词: 微流控, 微气泡, 变径通道, 孔喉构型, 流动特性

Abstract: In order to study the percolation characteristics of microbubbles in porous media, a microfluidic chip integrated with T micro channel and reducing channel was designed. Flow characteristics of microbubbles formed by "deionized water + air" and "0.02% Tween 20 solution + air" were studied by microfluidic system based on micro imaging. The fluid velocity and pressure changes in the microchannel during bubble fusion were analyzed by CFD method. Experimental results show that when the liquid phase is deionized water, with the change of gas pressure and liquid velocity, the microbubbles will fuse and not fuse when they flow through the reducing channel. The microbubbles generated by "0.02% Tween 20 solution + air" will pass through the reducing channel in turn and will not fuse. When the microbubbles are fused, the surface tension causes the microbubbles to deform, which leads to the large fluctuation of the surrounding fluid velocity, forming velocity "eddy current". When entering the "throat" again, the pressure in the "pore" increases. The experimental study is helpful to further understand the percolation characteristics and displacement mechanism of micro foam flooding.

Key words: microfluidic, microbubble, reducing channel, pore throat configuration, flow characteristics

中图分类号:

TE357

吴彬彬, 王成胜, 陈平, 黄波, 唐恩高. 模拟孔喉构型变径通道中微气泡流动特性研究[J]. 西南石油大学学报(自然科学版), 2022, 44(6): 87-96.

WU Binbin, WANG Chengsheng, CHEN Ping, HUANG Bo, TANG Engao. Research on the Flow Characteristics of Micro-bubbles in a Simulated Pore Throat Channel[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(6): 87-96.

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模拟孔喉构型变径通道中微气泡流动特性研究

Research on the Flow Characteristics of Micro-bubbles in a Simulated Pore Throat Channel

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