Page 192 - Reservoir Formation Damage

174 Reservoir Formation Damage

1i
Ss °
§ o 0.8
o «
6
S a °'
S 4
| °'
| 0.2
™ 0.0
0.2 0.4 0.6 0.8 1.0
Magnesium ion concentration, mM/L
Figure 9-6. Effect of the magnesium ion concentration on the calcite precipi-
tation rate constant (after Reddy, ©1995; reprinted by permission of the author
and Plenum Press).

1.0

Magnesium ion concentration, mM/L>
Figure 9-7. Langmuir isotherm plotted against the reciprocal added mag-
nesium ion concentration for calcite precipitation (after Reddy, ©1995;
reprinted by permission of the author and Plenum Press).

Particle Growth and Dissolution in Solution

The particle growth is assumed to occur at a rate proportional to the
surface, A c, available for growth and the deviation of the saturation ratio
from unity (Chang and Civan, 1992; Civan, 1996):

dm c
(9-23)
~dt