Adsorption of Carboxylic Acids on Reservoir Minerals From Organic and Aqueous Phase

Summary

Adsorption of organic acids onto North Sea chalk and pure minerals from a hydrocarbon phase and an aqueous phase show that the maximum adsorption is larger for calcite than for silicate surfaces in the hydrocarbon phase. The opposite is observed, however, in the aqueous phase. This suggests that the available silicate surfaces and oil/water ratio may play a role in the wettability of chalk.