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1  , 0 01 
1       0  z  . (3.21)
r
bw
o
5 , 1  z 2 f f 


Resorting intermediate values z f and for each value, we
get the left side of equation (3.21). For ease of calculation is
served at a Table 3.1.
Table 3.1 – Calculation of z f
z f 1- r o -  b w
0,1 Х 1
0,2 Х 2
0,3 Х 3
...... ......
1,0 Х n

Then, the obtained values get the graph. The values  r o
and  b w are set as defined in the laboratories of the oil and gas
mechanics (Fig. 3.7).

Figure 3.7 - Graph for definition oil saturation at the front
water-oil displacement

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