The comprehensive fractal characteristics of shale and its influencing factors
ZHANG Chuanghui
ZHU Yanming
CHEN Jukai
LI Zhengyu
Abstract：In order to analyze shale pore fractal feature of shale,fractal dimension is calculated by using high pressure mercury intrusion method.Menger model and low-temperature liquid nitrogen adsorption method FHH fractal model is used to do fractal fitting on different pore range.The ratio of pore volume of different pore range to the total pore volume is used as a weighted value to calculate the comprehensive fractal dimension of shale samples.The correlation of comprehensive fractal dimension,total organic content(TOC) and mineral content (clay minerals and brittle mineral) are analyzed.The results show that the total organic content (TOC) are the main factors affecting the total comprehensive fractal dimension.With the increase of total organic content(TOC),the comprehensive fractal dimension of shale is bigger which make pore structure becomes complicated.Meanwhile,the pore surface becomes rough providing more points for adsorption shale gas.
Keywords：shaleporehigh pressure mercury intrusion methodlow-temperature liquid nitrogen adsorption methodtotal fractal dimension
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 42-47 )