多孔介质通道内非混相驱替过程的格子Boltzmann方法模拟
发布时间：2018-11-23 08:38
【摘要】：针对CO_2泡沫相与原油体系,基于Shan-Chen伪势格子Boltzmann模型,耦合液-液、液-固间相互作用力与界面张力、液固润湿性之间的关系,对多孔介质通道内CO_2泡沫驱流动规律进行数值模拟,研究了雷诺数(Re)、毛细数(Ca)和壁面润湿性对非混相两相驱替流动中黏性指进的影响。实验结果表明,随Re和Ca的增大,黏性指进显著发展,驱替效率降低;壁面润湿时,无明显指进现象,而当壁面非润湿时,黏性指进较为明显,且随非润湿性程度的增加而愈发严重。在进行两相驱替流动时,需综合物性及驱替流体与固壁的润湿情况,确定驱替流体的注入条件,以提高驱替效率。
[Abstract]:Based on the Shan-Chen pseudopotential lattice Boltzmann model, the relationship between the interaction force between liquid and liquid-solid and the interfacial tension, and the wettability of liquid and solid were studied in CO_2 foam phase and crude oil system. The flow characteristics of CO_2 foam flooding in porous media channels are numerically simulated. The effects of Reynolds number (Re), capillary number (Ca) and wall wettability on viscous fingering in immiscible two-phase displacement flow are studied. The experimental results show that with the increase of Re and Ca, the viscosity index develops significantly and the displacement efficiency decreases. When the wall wetting, there is no obvious finger ingress, but when the wall is not wetting, the viscous finger entry is more obvious, and with the increase of the non-wettability degree, it becomes more and more serious. In order to improve the displacement efficiency, it is necessary to synthesize the physical properties and the wetting conditions between the displacement fluid and the solid wall to determine the injection conditions of the displacement fluid when carrying out the two-phase displacement flow.
【作者单位】： 华东理工大学化工学院化学工程联合国家重点实验室;
【分类号】：TE357.4
，
本文编号：2350931
[Abstract]:Based on the Shan-Chen pseudopotential lattice Boltzmann model, the relationship between the interaction force between liquid and liquid-solid and the interfacial tension, and the wettability of liquid and solid were studied in CO_2 foam phase and crude oil system. The flow characteristics of CO_2 foam flooding in porous media channels are numerically simulated. The effects of Reynolds number (Re), capillary number (Ca) and wall wettability on viscous fingering in immiscible two-phase displacement flow are studied. The experimental results show that with the increase of Re and Ca, the viscosity index develops significantly and the displacement efficiency decreases. When the wall wetting, there is no obvious finger ingress, but when the wall is not wetting, the viscous finger entry is more obvious, and with the increase of the non-wettability degree, it becomes more and more serious. In order to improve the displacement efficiency, it is necessary to synthesize the physical properties and the wetting conditions between the displacement fluid and the solid wall to determine the injection conditions of the displacement fluid when carrying out the two-phase displacement flow.
【作者单位】： 华东理工大学化工学院化学工程联合国家重点实验室;
【分类号】：TE357.4
，
本文编号：2350931
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