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7.4.3 Fill glass flask 4 with the toluene (benzol) for a half of its
volume and put glass cylinder 3 with core 5 into the mouth of
the flask on the bulges.
7.4.4 Mount the device by the chart given on figure 7.1.

7.4.5 Connect water to the refrigerator (from the bottom upwards)
and switch on the electric heater. Adjust heating the flask thus that
the rock sample is constantly immersed into the solvent but at

the same time the solvent doesn’t overrun cylinder 3.
The process of water distillation and extraction of the rock
sample is considered completed when water level in glass trap 2 does

not rise and the solvent which is pourred from the cylinder and is

located above the water level in the glass trap becomes transparent.
7.4.6 Switch off the electric heater and let the solvent flow down
into the cylinder. Then take the cylinder with the rock sample out

and dry it up in the drying cabinet at 102 – 105 °С.
7.4.7 Determine the mass of cylinder with the extracted core, P ,
2
kg.

7.4.8 Put the results of experiments into table 7.1.

Calculations (Experiment data processing)

7.4.9 Using the data from table 7.1 determine the volume of oil
in the rock sample by means of the equation:

1
)
V  (  G 1  G 2  V   w , (7.5)
o
w
 o
3
where  is the density of oil, kg/m ;  is the density of water,
o
w
3
3
kg/m ; V w is the volume of water in the trap, m ; G is the mass of
1
the rock sample saturated by water, oil and gas, kg; G is the mass of
2
the extracted and dried up rock sample, kg.

7.4.10 Calculate oil saturation factor S of the rock sample (in

o
fractions) by means of the equation:

V o V o V   rs
o
S    , (7.6)
o
V pores m  G 2 m  G 2
 rs
where m is the porosity factor of the rock sample, fractions; 
rs

3
is the density of rock sample, kg/m .
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