In order to evaluate alkali consumption for oil-field processes like alkaline flooding or clay stabilization treatment, mineral dissolution rates was determined. To do this, a steady-state method was carried out, whereby a well-mixed open reactor was used to contact mineral with alkaline solution, allowing straight forward measurement of dissolution rate in well defined conditions. The method has been tested with quartz for which dissolution rates were found in line with literature's ones. Clay dissolution kinetics were next studied with kaolinite. Initial reaction rate has been found pH-independent in the pH-range 11-13. A kinetic scheme has been worked out accounting for the steep decreasing of the dissolution rate with dissolution products concentration. The model can be used so long as no new mineral precipitates, which occurs well before the theoretical solubility product of kaolinite is attained in that pH range.

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