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Table 7.1 – The results of experiments on determining the oil-,
water- and gas saturation factor of rock.

Index, the unit of measurement Designation The result of
measurement

1 2 3 4
1 The mass of dried up cylinder, kg P
0

2 The mass of cylinder together P

1
with the rock sample saturated by
water, oil and gas, kg
3 The mass of cylinder together P 2

with the extracted and dried up
rock sample, kg
4 The mass of the rock sample G = Р – Р
1
1
0
saturated by water, oil and gas, kg
5 The mass of the extracted and G = Р – Р
2
0
2
dried up rock sample, kg
3
6 The density of oil, kg/m 
o
3
7 The density of water, kg/m 
w
8 Porosity factor of the rock sample, m
fractions
9 The density of the rock sample, 
rs
3
kg/m
10 The volume of water in the trap, V
w
3
m
11 The volume of oil in the rock V
o
3
sample, m
12 Oil saturation factor, fractions S
o
13 Water saturation factor, fractions S
w
14 Gas saturation factor, fractions S
g

7.4.11 Calculate water saturation factor S of the rock sample (in
w
fractions) by means of the equation:

V w V w V w   rs
S w   
V pores m  G 2 m  G 2 , (7.7)
 rs

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