Effect of the salinity in the interfacial tension of the hydrocarbon/water system in isobaric conditions and gradual increase of temperature

Abstract

The interfacial tension is an important property in the enhanced oil recovery processes. And determinate different parameters in the Enhanced Recovery Processes, this paper is addressed in determine experimentally the interfacial tension behavior in systems who has calcium carbonate or sodium chlorate, characteristic of the carbonate reservoirs.This work was carried out in the Drop Shape Analyzer DSA100HP equipment, where was proposed two systems n-alkane/water (one with pure fluids and other with three percent of sodium chloride). Maintaining constant the pressure and gradually increase the temperature, these results are then processed through a statistical analysis obtained values of interfacial tension for each thermal point. In such a way the results achieve two equations, where once that is perfectly adjusted to the literature and which were validated using the comparison with other authors, finding values of angle coefficient whose relative error percentage is entirely satisfactory,
similarly was presented a setting optimum to be matched with theoretical values extracted from numerical methods. According of these ideas, the correlations have a significant difference between both systems, the system who have contamination have a lower interfacial tension value.