Investigation on alkali consumption co-effect between clay minerals.

Three reservoir clay minerals such as montmorillonite, kaolinite and illite were selected. Alkali consumption was investigated to define co-effect bet ween these minerals and their corresponding mixtures under three amount rat ios, solid/liquid ratios, and at different temperature conditions. Results show the following alkali consumption sequence for those mono-clay minerals : montmosillonite(S) kaolinite(K), illite(I). The alkali consumption increa ses with reaction term and temperature. The decrease of solid/liquid ratio leads to a larger alkali consumption meanwhile the alkali consumption for s amples containing montmorillonite(SK, SI) increases linearly with montmoril lonite amount, which is not true for kaolinite and illite.