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Original Article | Open Access

A study of correlation between permeability and pore space based on dilation operation

Wenshu Zha1Shu Yan2Daolun Li1( )Detang Lu3
School of Mathematics, Hefei University of Technology, Hefei 230009, P. R. China
Daqing Well Logging Technology Service Company, Daqing 163453, P. R. China
School of Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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Abstract

CO 2 and fracturing liquid injection into tight and shale gas reservoirs induces reactivity between minerals and injected materials, which results in porosity change and thus permeability change. In this paper, the dilation operation is used to simulate the change of the porosity and the corresponding change of permeability based on Lattice-Boltzmann is studied. Firstly we obtain digital images of a real core from CT experiment. Secondly the pore space of digital cores is expanded by dilation operation which is one of basic mathematical morphologies. Thirdly, the distribution of pore bodies and pore throats is obtained from the pore network modeling extracted by maximal ball method. Finally, the correlation between network modeling parameters and permeabilities is analyzed. The result is that the throat change leads to exponential change of permeability and that the big throats significantly influence permeability.

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Advances in Geo-Energy Research
Pages 93-99
Cite this article:
Zha W, Yan S, Li D, et al. A study of correlation between permeability and pore space based on dilation operation. Advances in Geo-Energy Research, 2017, 1(2): 93-99. https://doi.org/10.26804/ager.2017.02.04

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Received: 06 July 2017
Revised: 10 August 2017
Accepted: 14 August 2017
Published: 25 September 2017
© The Author(s) 2017

Published with open access at Ausasia Science and Technology Press on behalf of Division of Porous Flow, Hubei Province Society of Rock Mechanics and Engineering.

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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