10.1021/acs.iecr.8b00021.s001
Jinze Xu
Jinze
Xu
Keliu Wu
Keliu
Wu
Zhandong Li
Zhandong
Li
Yi Pan
Yi
Pan
Ran Li
Ran
Li
Jing Li
Jing
Li
Zhangxin Chen
Zhangxin
Chen
A Model for Gas Transport in Dual-Porosity Shale Rocks
with Fractal Structures
American Chemical Society
2018
fractal dimension
Dual-Porosity Shale Rocks
fractal dual-porosity rock
shale gas flow
fracture aperture
fracture aperture distribution
2018-04-09 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/A_Model_for_Gas_Transport_in_Dual-Porosity_Shale_Rocks_with_Fractal_Structures/6150263
A model
for shale gas flow in a fractal dual-porosity rock is built
and well validated with experimental data. Results indicate that (1)
the gas transport in shale natural fractures gradually becomes a higher
priority in the dual-porosity rock with the increase of fracture porosity;
(2) the ratio of minimum fracture aperture to a fracture aperture
and the fractal dimension of fracture together contribute to the
fracture aperture distribution. More fractures with larger aperture
exist in shale rock with larger minimum fracture aperture, which benefits
gas apparent permeability; (3) a natural fracture-dominant region
enlarges with decreasing fractal dimension of fracture aperture and
increasing minimum fracture aperture, and this is beneficial to the
improvement of the gas apparent permeability.