Environmental Engineering Reference
In-Depth Information
permeability is concerned. The reservoir is closed and oil is withdrawn from a single
well W. The mean value of the rock porosity is 0.147, the residual oil saturation
0.20, the critical gas saturation 0.04, the initial water saturation 0.279, and the initial
gas saturation 0.0002. The initial pressure is 24.8 MPa.
The elastic properties of the three types of rock used in the simulation are listed
in Table 14.3. The effects of capillary pressures for the water−oil and gas−oil
system are taken into account (Table 14.4).
Y
k1
k2
k3
k4
PRODUCTION WELL
X
W
Figure 14.6.
Model reservoir, first example
Property
Rock I
Rock II
Rock III
0.9631 x 10
10
0.9631 x 10
8
0.9631 x 10
6
Young's modulus
E
(Pa)
Poisson coefficient ν
0.27
0.23
0.20
Table 14.3.
Mechanical properties of the reservoir rocks
P
cw
S
w
P
cg
S
g
0.50
0.900
0.00
0.00
1.50
0.700
0.50
0.10
3.00
0.400
1.50
0.30
5.00
0.273
3.00
0.60
7.00
0.220
4.00
0.80
Table 14.4.
Capillary data used
