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Table 3.1 – The results of experiments for determining the absolute

permeability coefficient of the rock sample for gas

Index Designa- Unit of № of experiment
tion measure- 1 2 3 4 5 6 7

ment
The length of the rock L m

sample

The diameter of the d m
rock sample
2
Сross-sectional area of A m
the rock sample
The temperature of air t O C

Dynamic viscosity of  Pa s 
g
air
Atmospheric pressure P Pa
atm
Surplus pressure at the P Pa
/

1
inlet of core holder
Inlet absolute pressure P Pa
1
Outlet absolute P Pa
2
pressure
3
The volume of gas V m
gas
(air) measured by gas

meter
The time of air  s
passing through the
rock sample
3
Volumetric flow rate Q gas s.c. m /s
of gas (air)
2
Permeability coeffici- k рer.g. m
ent of the rock sample
for gas (air)
2
Average permeability k m
avr. рer.g.
coefficient of the rock
sample for gas (air)

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