Table 3: Silica solubility measurement at 25 °C.

Sample

Silica Dissolution, mg/L

pH

Static Experiments

Core Flooding Experiment

Crushed

Chips

Cores

A-1

4.5

3.7

4.5

7

A-2

8.3

6.1

15.5

8

A-3

15.5

6.4

20.5

8.3

A-4

48.2

25.2

28.4

9.9