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首页> 外文期刊>The Journal of Canadian Petroleum Technology >Pore-Level Investigation of Oil-Mobility Enhancement in Heavy-Oil Reservoirs
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Pore-Level Investigation of Oil-Mobility Enhancement in Heavy-Oil Reservoirs

机译：稠油油藏增油孔隙度研究

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摘要

One of the most important properties for understanding multiphase flow in porous media is relative permeability. In two-phase flow, the relative permeability to a given phase is generally assumed only to be a function of its saturation, independent of the properties of fluids involved and/or flow conditions and ranging from zero to unity. Considering the physical principles of multiphase flow through porous media, the momentum transfer or viscous coupling appears as a hidden driving mechanism that might lead to higher than expected oil-flow rates. In an effort to provide a better understanding of oil mobility in heavy-oil reservoirs, a capillary model is used to assess the importance of lubrication in two-phase flow and to determine the effect of the viscous coupling on relative permeabilities. Different cross-sectional geometries are analyzed. The problem is addressed analytically even for the unequal-viscosity case by making use of the Galerkin method. The concept of contact angle is used in the determination of the fluid distribution inside a noncircular channel. The model results show that the viscosity ratio theoretically affects relative permeabilities, especially in systems involving heavy oil.
机译：理解多孔介质中多相流的最重要特性之一是相对渗透率。在两相流中，通常假定给定相的相对渗透率仅是其饱和度的函数，而与所涉及流体的特性和/或流动条件无关，并且范围从零到一。考虑到通过多孔介质的多相流动的物理原理，动量传递或粘滞耦合似乎是一种隐藏的驱动机制，可能导致高于预期的油流量。为了更好地理解稠油油藏中的油流动性，使用毛细管模型评估两相流中润滑的重要性，并确定粘性耦合对相对渗透率的影响。分析了不同的横截面几何形状。通过使用Galerkin方法，即使对于粘度不均的情况，该问题也可以通过分析得到解决。接触角的概念用于确定非圆形通道内部的流体分布。模型结果表明，粘度比理论上会影响相对渗透率，特别是在涉及重油的系统中。

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    《The Journal of Canadian Petroleum Technology》 |2011年第5期|p.59-74|共16页
  • 作者

    J.D. Ortiz-Arango; A. Kantzas;

  • 作者单位

    Universidad Industrial de Santander in Colombia and an MSc degree in petroleum engi-neering from the University of Calgary;

    University of Calgary, holder of a Canada Research Chair in Energy and Im-aging, and the Director of the Tomographic Imaging and Porous Media Laboratory;

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