Page 41 - 6685

Oil reserves in the zone of displacement for strip deposit
Q res .  Bhlm  0  , (3.14)
where l - the distance between the WOC, m;  0 - initial oil-
saturation;  - oil recovery factor.
Oil reserves in the zone of displacement for circle deposit
2
Q res .    R  R 2 2 hm   , (3.15)
0
1
where R 1, R 2  radiuses WOC in two positions at the beginning
and end of the billing period, m.
Calculation of validity of deposit is as follows. Determine
the time moving of WOC from the initial position to the first row
of wells
Q 1
t  res . 1 . (3.16)
1
 Q 1 1 n w 1
i 1 n 100
Then determine the time moving of WOC wells from the
first row of the second
Q 1
t  res . 2 . (3.17)
2
 Q 2 1 n w 2
i 2 n 100
The total validity
i k
T t (3.18)
i
 i 1
where k – amount rows of wells.

3.1.4 Consideration two-phase seepage under the
water-oil displacement

In all the above tasks of oil displacement water is the
scheme of piston displacement. Piston displacement - a condition,
is taken in the performance of hydrodynamic calculations

41