Page 197 - A Practical Companion to Reservoir Stimulation
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PRACTICAL COMPANION TO RESERVOIR STIMULATION
1
9?
3
c
E 0.75
a,
E
F
0
v)
a,
-
C 0.5
0
.-
v)
C
E
._
n
0.25
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Dimensionless Position
Figure P-43-Dimensionless temperature profiles for various efficiencies (PKN model).
110
100
90
80
h
8 70
-
a,
C
3 60
a,
[r
c 50
.-
v)
0
2 40
5
30
20
10
*APS = , ..nmonium
0 Persulfate
0.0 0.5 1 .o 1.5 2.0
Time (hr)
Figure P-44- Effects of breakers on viscosity of borate-crosslinked guar at 160°F (from Gulbis, J. et al.,
SPE paper 19433,1990).
P-38