Role of Gas Viscosity for Shale Gas Percolation

Table 1

Basic parameters of shale reservoir and shale gas [27, 28].

Symbol	Value	Unit	Description
	333.15	K	Reservoir temperature
	400	m	Length of reservoir
	480	m	Width of reservoir
	38	m	Thickness of reservoir
	0.002	m	Natural fracture width
	0.005	m	Artificial fracture width
		μm^2	Matrix permeability
		μm^2	Natural fracture permeability
		μm^2	Artificial fracture permeability
		MPa^-1	Matrix compressibility
		MPa^-1	Natural fracture compressibility
		MPa^-1	Artificial fracture compressibility
	2	%	Matrix porosity
	0.4	%	Natural fracture porosity
	0.4	%	Artificial fracture porosity
	30	MPa	Initial reservoir pressure
AS	3	—	Artificial fracture number
	200	m	Half length of artificial fracture
	3000	m^3/d	Half gas flow rate
	0.717	kg/m^3	Gas density at standard conditions
	176.794	kg/m^3	Gas density at reservoir conditions
	2	m^3/t	Langmuir volume
	10	MPa	Langmuir pressure
	8.34	J/(K·mol)	Universal gas constant
	16	g/mol	Molecular weight of methane
	0.76	m^-2	Shape factor