Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury Intrusion

This paper investigated fractal characteristics of microscale and nanoscale pore structures in carbonates using High-Pressure Mercury Intrusion (HPMI). Firstly, four different fractal models, i.e., 2D capillary tube model, 3D capillary tube model, geometry model, and thermodynamic model, were used t...

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Main Authors: Fuyong Wang, Peiqing Lian, Liang Jiao, Zhichao Liu, Jiuyu Zhao, Jian Gao
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Geofluids
Online Access:http://dx.doi.org/10.1155/2018/4023150
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author Fuyong Wang
Peiqing Lian
Liang Jiao
Zhichao Liu
Jiuyu Zhao
Jian Gao
author_facet Fuyong Wang
Peiqing Lian
Liang Jiao
Zhichao Liu
Jiuyu Zhao
Jian Gao
author_sort Fuyong Wang
collection DOAJ
description This paper investigated fractal characteristics of microscale and nanoscale pore structures in carbonates using High-Pressure Mercury Intrusion (HPMI). Firstly, four different fractal models, i.e., 2D capillary tube model, 3D capillary tube model, geometry model, and thermodynamic model, were used to calculate fractal dimensions of carbonate core samples from HPMI curves. Afterwards, the relationships between the calculated fractal dimensions and carbonate petrophysical properties were analysed. Finally, fractal permeability model was used to predict carbonate permeability and then compared with Winland permeability model. The research results demonstrate that the calculated fractal dimensions strongly depend on the fractal models used. Compared with the other three fractal models, 3D capillary tube model can effectively reflect the fractal characteristics of carbonate microscale and nanoscale pores. Fractal dimensions of microscale pores positively correlate with fractal dimensions of the entire carbonate pores, yet negatively correlate with fractal dimensions of nanoscale pores. Although nanoscale pores widely develop in carbonates, microscale pores have greater impact on the fractal characteristics of the entire pores. Fractal permeability model is applicable in predicting carbonate permeability, and compared with the Winland permeability model, its calculation errors are acceptable.
format Article
id doaj-art-d7d6ce7e60b648feafc66ef8cf96ac77
institution Kabale University
issn 1468-8115
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language English
publishDate 2018-01-01
publisher Wiley
record_format Article
series Geofluids
spelling doaj-art-d7d6ce7e60b648feafc66ef8cf96ac772025-02-03T05:58:10ZengWileyGeofluids1468-81151468-81232018-01-01201810.1155/2018/40231504023150Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury IntrusionFuyong Wang0Peiqing Lian1Liang Jiao2Zhichao Liu3Jiuyu Zhao4Jian Gao5Research Institute of Enhanced Oil Recovery, China University of Petroleum (Beijing), Beijing 102249, ChinaPetroleum Exploration and Development Research Institute, SINOPEC, Beijing 100083, ChinaResearch Institute of Enhanced Oil Recovery, China University of Petroleum (Beijing), Beijing 102249, ChinaResearch Institute of Enhanced Oil Recovery, China University of Petroleum (Beijing), Beijing 102249, ChinaResearch Institute of Enhanced Oil Recovery, China University of Petroleum (Beijing), Beijing 102249, ChinaState Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development, Beijing 100083, ChinaThis paper investigated fractal characteristics of microscale and nanoscale pore structures in carbonates using High-Pressure Mercury Intrusion (HPMI). Firstly, four different fractal models, i.e., 2D capillary tube model, 3D capillary tube model, geometry model, and thermodynamic model, were used to calculate fractal dimensions of carbonate core samples from HPMI curves. Afterwards, the relationships between the calculated fractal dimensions and carbonate petrophysical properties were analysed. Finally, fractal permeability model was used to predict carbonate permeability and then compared with Winland permeability model. The research results demonstrate that the calculated fractal dimensions strongly depend on the fractal models used. Compared with the other three fractal models, 3D capillary tube model can effectively reflect the fractal characteristics of carbonate microscale and nanoscale pores. Fractal dimensions of microscale pores positively correlate with fractal dimensions of the entire carbonate pores, yet negatively correlate with fractal dimensions of nanoscale pores. Although nanoscale pores widely develop in carbonates, microscale pores have greater impact on the fractal characteristics of the entire pores. Fractal permeability model is applicable in predicting carbonate permeability, and compared with the Winland permeability model, its calculation errors are acceptable.http://dx.doi.org/10.1155/2018/4023150
spellingShingle Fuyong Wang
Peiqing Lian
Liang Jiao
Zhichao Liu
Jiuyu Zhao
Jian Gao
Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury Intrusion
Geofluids
title Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury Intrusion
title_full Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury Intrusion
title_fullStr Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury Intrusion
title_full_unstemmed Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury Intrusion
title_short Fractal Analysis of Microscale and Nanoscale Pore Structures in Carbonates Using High-Pressure Mercury Intrusion
title_sort fractal analysis of microscale and nanoscale pore structures in carbonates using high pressure mercury intrusion
url http://dx.doi.org/10.1155/2018/4023150
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