Geology Reference
In-Depth Information
a
c
b
Figure 4.
Double porosity model. (a): naturally fractured rock formation,
(b) and (c) Warren and Root idealised fractured system; (b) orthogonal
fractures network (
n
= 3) and (c) horizontal fractures network (
n
= 1).
10
w ell effects + flow in fractures
flow in frac
tures+matrix
transitional period
1
Der iv ativ e
0.1
0.1
1
10
100
1000
10000
Tim e [min]
4
w ell effects + flow in fractures
flow in frac
tures+matrix
transitional period
Warren and Root
3
Theis
measurement
Theis
Warren & Root
2
1
0.1
1
10
100
1000
10000
Time [m in]
Figure 5.
Interpretation at pumping well IFP-16 using a double porosity model.
(a) logarithmic derivative at IFP-16 and (b) adjustment of drawdown using Warren
and Root (double porosity) and Theis method.
