A Dynamic Network Model for Two-Phase Flow in Porous Media

被引:0
作者
Glenn Tørå
Pål-Eric Øren
Alex Hansen
机构
[1] Norwegian University of Science and Technology,Department of Physics
[2] Numerical Rocks AS,undefined
来源
Transport in Porous Media | 2012年 / 92卷
关键词
Network model; Two-phase flow; Reconstructed porous media; Imbibition; Resistivity index;
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中图分类号
学科分类号
摘要
We present a dynamic model of immiscible two-phase flow in a network representation of a porous medium. The model is based on the governing equations describing two-phase flow in porous media, and can handle both drainage, imbibition, and steady-state displacement. Dynamic wetting layers in corners of the pore space are incorporated, with focus on modeling resistivity measurements on saturated rocks at different capillary numbers. The flow simulations are performed on a realistic network of a sandpack which is perfectly water-wet. Our numerical results show saturation profiles for imbibition in agreement with experiments. For free spontaneous imbibition we find that the imbibition rate follows the Washburn relation, i.e., the water saturation increases proportionally to the square root of time. We also reproduce rate effects in the resistivity index for drainage and imbibition.
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页码:145 / 164
页数:19
相关论文
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