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connected with cylinder (or hydraulic press) and manometer. Water
for the experiment is filtrated and vacuumized beforehand in capacity
4 (in order to remove the air dissolved in it). Before the experiment
the installation is vacuumized through valve 13 and manifold 5. Under

the pressure which is transmitted by gas (air) or oil the water comes
from the discharge capacity to the core holder 6 with the rock sample
and then to measuring capacity 9. The pressure behind the core is

measured by means of manometer (indicating pressure gage) 8 and
the pressure in front of the core is measured by means of manometer
(indicating pressure gage) 7. For the experiment carrying out
stopwatch is also needed.

Besides installation WCPE-1 (ВКТВ-1) the rock permeability
coefficient for water can be determined also using the installation

IIPC-1M (УДПК-1М). It is possible to model formation conditions

(pressure and temperature) by means of this installation. The
installation IIPC-1M (УДПК-1М) is also used for determining the
effective permeability coefficient. The installation IIPC-1M (УДПК-

1М) (figure 4.2) consists of 2 measuring presses; hand-power press;
tanks; core holder; manometers; filters; differential manometer;
cylinder with pressed gas; capacity with a dryer; piston container;

electric motor; worm reduction gear; friction variable-speed drive;
reduction gear of planet type and gears.

4.4 Procedure and calculations

4.4.1 Measure the length and the diameter of the core and insert it

into core holder 6.

4.4.2 Fill capacity 4 with some filtered water and conduct water
vacuumizing till the air removes completely. Simultaneously by means

of valve 12 vacuumize the installation in condition that valves 11, 15,
18 are closed.

4.4.3 Close valve 12 and stop vacuumizing. By means of valve 13

fill the system with some water and fill capacity 2 with oil.
4.4.4 Open the cylinder with gas and by means of microreducer

(reduction gear) 10 regulate the pressure in front of the rock sample

(additional regulation of the pressure in front of the core and water

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