Effect of salinity, Mg and SO on "smart water"-induced carbonate wettability alteration in a model oil system.

Hypothesis: We present a systematic study of the "smart water" induced wettability alteration. This process is believed to be greatly affected by the brine salinity and the presence of Mg and SO in the brine.

Experiments And Modelling: To characterize the wettability alteration, we perform spontaneous imbibition measurement using Indiana limestone cores and a model oil with added naphthenic acid.

A semi-experimental procedure for the estimation of permeability of microfluidic pore network.

Microfluidic porous media systems are used for various applications ranging from chemical molecule detection to enhanced oil recovery studies. Absolute permeability data of the microfluidic porous media are important for those applications. However, it is a significant challenge to measure the permeability due to the difficulty in accurately measuring the ultra-low pressure drop across the pore network.