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Title:
Investigation of Intermingled Fractal Model for Organic-Rich Shale
Author: Li CX(李曹雄); Lin M(林缅); Ji LL(姬莉莉); Jiang WB(江文滨); Cao, Gaohui
Source: ENERGY & FUELS
Issued Date: 2017-09-01
Volume: 31, Issue:9, Pages:8896-8909
Abstract: Organic-rich shales have abundant micronanopores and slits. Most micronanopores exist in organic matter and pyrites. Pore size distribution significantly influences shale gas flow. In micronanopores of organic matter and pyrites, pore size distribution has a self-imitating or fractal property. This property is helpful in upscaling calculation. In this work, intermingled fractal model for organic-rich shale is investigated. First, on the basis of scanning electron microscopy (SEM) images of shale samples in Longmaxi shale formation, fractal units are built-in representative elementary surfaces of organic matter and pyrites. Second, intermingled fractal models (IFMs) are then built considering the organic matter fractal pore units, the pyrite fractal pore units, and slits. Influences of fractal parameters on apparent gas permeability of IFMs are investigated. Third, an upscaled shale model is successfully built using the mirror image method. This upscaling method is verified by comparing the apparent gas permeability between upscaled models and experimental results. The upscaling method based on fractal theory can significantly shorten the calculation time and provide a promising way for apparent gas permeability calculation in the upscaled model.
Language: 英语
Indexed Type: SCI ; EI
DOI: 10.1021/acs.energyfuels.7b00834
Related URLs: 查看原文
DOC Type: Article
WOS Subject: Energy & Fuels ; Engineering, Chemical
WOS Subject Extended: Energy & Fuels ; Engineering
WOS Keyword Plus: POROUS-MEDIA ; THERMAL-CONDUCTIVITY ; PERMEABILITY MODEL ; UNITS MODEL ; GAS-FLOW ; PREDICTION ; IMBIBITION ; TRANSPORT ; RESERVOIR ; MATTER
WOS ID: WOS:000411771200008
ISSN: 0887-0624
Funder: National Natural Science Foundation of China(41690132 ; Major National Science and Technology Special Program of China(2017ZX05037-001) ; Chinese Academy of Sciences(XDB10020302) ; 41574129)
Department: LMFS海洋环境与工程(LEM)
Classification: 二类
Ranking: 1
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/70076
Appears in Collections:流固耦合系统力学重点实验室(2012-)_期刊论文

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Recommended Citation:
Li CX,Lin M,Ji LL,et al. Investigation of Intermingled Fractal Model for Organic-Rich Shale[J]. ENERGY & FUELS,2017-09-01,31(9):8896-8909.
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