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Original Article | Open Access

A study of relative permeability for transient two-phase flow in a low permeability fractal porous medium

Zhenglan Li, Yonggang Duan( ), Quantang Fang, Mingqiang Wei
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, P. R. China
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Abstract

In this paper, a relative permeability prediction method considering the effects of capillary pressure and threshold pressure gradient in a low permeability fractal porous medium is established and analyzed based on the fractal approximation model that porous medium consist of a bundle of tortuous capillaries. With this method, every parameter has clear physical meaning without empirical constants, and the model's predictions have a good agreement with experimental data. In addition to this, it makes some discussions that how the characteristic parameters (such as tortuosity fractal dimension, pore fractal dimension, ratio of minimum-maximum capillaries diameters and threshold pressure gradient) influence the relative permeability. This study may be conducible to a better understanding of the mechanism for transient two-phase flow in the low permeability fractal porous medium.

Keywords

Fractal theorythreshold pressure gradientrelative permeabilitytransient two-phase flow

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Advances in Geo-Energy Research
Volume 2 Issue 4,
December 2018
Pages 369-379
DOI: 10.26804/ager.2018.04.02
Cite this article:
Li Z, Duan Y, Fang Q, et al. A study of relative permeability for transient two-phase flow in a low permeability fractal porous medium. Advances in Geo-Energy Research, 2018, 2(4): 369-379. https://doi.org/10.26804/ager.2018.04.02

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Received: 06 July 2018
Revised: 25 July 2018
Accepted: 26 July 2018
Published: 03 August 2018
© The Author(s) 2018

This article is distributed under the terms and conditions of the Creative Commons Attribution (CC BY-NC-ND) license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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