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首页> 外文期刊>Special topics & reviews in porous media >ELECTROKINETIC COUPLING MODEL FOR POROUS FLOW IN TIGHT OIL RESERVOIRS
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ELECTROKINETIC COUPLING MODEL FOR POROUS FLOW IN TIGHT OIL RESERVOIRS

机译：致密油藏孔隙流动的电动力学耦合模型

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摘要

To meet the needs of engineering calculations, the forces acting on a fluid are discussed and the state of being is analyzed for fluids in micro-anochannels. A method for correcting fluid viscosity is proposed. This study shows that the major interaction forces in the micro-anochannel are surface forces. The fluid exists in two forms: electrical double layer (EDL) fluid and bulk fluid. The new electrokinetic coupling model is established based on correcting the viscosity of the EDL fluid and the theory of Hagen-Poiseuille flow and electroosmotic flow. The model was calculated assuming that the fluid is 1-mM NaCl. The calculation shows that the volumetric flow rate of the electrokinetic coupling model is considerably smaller than that of the Hagen-Poiseuille flow when there is no applied DC electric field. Adverse electroosmosis is one of the important factors weakening the volumetric flow rate. The adverse electroosmosis can almost be ignored when the dimensionless ratio d (the ratio between the channel diameter and the EDL thickness) is greater than 100. The volumetric flow rate is weakened significantly by increasing the surface-to-volume ratio, and it can be increased considerably more effectively by an appropriately applied DC electric field when combined with pressure.
机译：为了满足工程计算的需要，讨论了作用在流体上的力，并分析了微/纳米通道中流体的存在状态。提出了一种校正流体粘度的方法。这项研究表明，微/纳米通道中的主要相互作用力是表面力。流体以两种形式存在：双电层（EDL）流体和本体流体。基于校正EDL流体的粘度，并根据哈根-泊肃叶流和电渗流的理论，建立了新的电动耦合模型。假设流体为1-mM NaCl，则计算模型。计算结果表明，在没有施加直流电场的情况下，电动耦合模型的体积流率比哈根-泊瓦伊流的体积流率小得多。不利的电渗作用是削弱体积流量的重要因素之一。当无因次比d（通道直径与EDL厚度之间的比）大于100时，几乎可以忽略不利的电渗作用。通过增加表面积与体积之比，体积流量会大大降低，并且可以当与压力结合使用时，适当施加的直流电场会大大提高效率。

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  • 来源
    《Special topics & reviews in porous media》 |2017年第4期|295-305|共11页
  • 作者

    Xiao Qianhua; Yang Zhengming; Liu Xiangui; Xiong Wei; Huang Yanzhang;

  • 作者单位

    School of Oil and Gas Engineering, CQUST, Chongqing, 401331, China;

    Institute of Porous Flow and Fluid Mechanics, UCAS, Hebei, 065007, China ,PetroChina Research Institute of Petroleum Exploration and Development, Langfang, 065007, China;

    Institute of Porous Flow and Fluid Mechanics, UCAS, Hebei, 065007, China ,PetroChina Research Institute of Petroleum Exploration and Development, Langfang, 065007, China;

    Institute of Porous Flow and Fluid Mechanics, UCAS, Hebei, 065007, China ,PetroChina Research Institute of Petroleum Exploration and Development, Langfang, 065007, China;

    Institute of Porous Flow and Fluid Mechanics, UCAS, Hebei, 065007, China ,PetroChina Research Institute of Petroleum Exploration and Development, Langfang, 065007, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    tight reservoirs; micro- and nanoscale forces; EDL fluid; viscosity correction; electrokinetic coupling model;

    机译：致密的水库;微米和纳米力;EDL流体;粘度校正;电动耦合模型;

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